| File: | programs/pluto/kernel.c |
| Warning: | line 2307, column 4 Value stored to 'outgoing_ref_set' is never read |
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| 1 | /* routines that interface with the kernel's IPsec mechanism, for libreswan |
| 2 | * |
| 3 | * Copyright (C) 1997 Angelos D. Keromytis. |
| 4 | * Copyright (C) 1998-2010 D. Hugh Redelmeier. |
| 5 | * Copyright (C) 2003-2008 Michael Richardson <mcr@xelerance.com> |
| 6 | * Copyright (C) 2007-2010 Paul Wouters <paul@xelerance.com> |
| 7 | * Copyright (C) 2008-2010 David McCullough <david_mccullough@securecomputing.com> |
| 8 | * Copyright (C) 2010 Bart Trojanowski <bart@jukie.net> |
| 9 | * Copyright (C) 2009-2010 Tuomo Soini <tis@foobar.fi> |
| 10 | * Copyright (C) 2010 Avesh Agarwal <avagarwa@redhat.com> |
| 11 | * Copyright (C) 2010-2019 D. Hugh Redelmeier <hugh@mimosa.com> |
| 12 | * Copyright (C) 2012-2015 Paul Wouters <paul@libreswan.org> |
| 13 | * Copyright (C) 2013 Kim B. Heino <b@bbbs.net> |
| 14 | * Copyright (C) 2016-2019 Andrew Cagney <cagney@gnu.org> |
| 15 | * Copyright (C) 2019 Paul Wouters <pwouters@redhat.com> |
| 16 | * Copyright (C) 2017 Mayank Totale <mtotale@gmail.com> |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or modify it |
| 19 | * under the terms of the GNU General Public License as published by the |
| 20 | * Free Software Foundation; either version 2 of the License, or (at your |
| 21 | * option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>. |
| 22 | * |
| 23 | * This program is distributed in the hope that it will be useful, but |
| 24 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 25 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 26 | * for more details. |
| 27 | */ |
| 28 | |
| 29 | #include <stddef.h> |
| 30 | #include <string.h> |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <errno(*__errno_location ()).h> |
| 34 | #include <sys/wait.h> /* for WIFEXITED() et.al. */ |
| 35 | #include <unistd.h> |
| 36 | #include <fcntl.h> |
| 37 | #include <sys/utsname.h> |
| 38 | #include <sys/ioctl.h> |
| 39 | |
| 40 | #include <sys/stat.h> |
| 41 | #include <sys/socket.h> |
| 42 | #include <netinet/in.h> |
| 43 | #include <arpa/inet.h> |
| 44 | |
| 45 | #include <event2/event.h> |
| 46 | #include <event2/event_struct.h> |
| 47 | #include <event2/thread.h> |
| 48 | |
| 49 | |
| 50 | #include "sysdep.h" |
| 51 | #include "constants.h" |
| 52 | |
| 53 | #include "defs.h" |
| 54 | #include "rnd.h" |
| 55 | #include "id.h" |
| 56 | #include "connections.h" /* needs id.h */ |
| 57 | #include "state.h" |
| 58 | #include "timer.h" |
| 59 | #include "kernel.h" |
| 60 | #include "kernel_ops.h" |
| 61 | #include "kernel_xfrm.h" |
| 62 | #include "packet.h" |
| 63 | #include "x509.h" |
| 64 | #include "pluto_x509.h" |
| 65 | #include "certs.h" |
| 66 | #include "secrets.h" |
| 67 | #include "log.h" |
| 68 | #include "server.h" |
| 69 | #include "whack.h" /* for RC_LOG_SERIOUS */ |
| 70 | #include "keys.h" |
| 71 | #include "ike_alg.h" |
| 72 | #include "ike_alg_encrypt.h" |
| 73 | #include "ike_alg_integ.h" |
| 74 | |
| 75 | #include "packet.h" /* for pb_stream in nat_traversal.h */ |
| 76 | #include "nat_traversal.h" |
| 77 | #include "ip_address.h" |
| 78 | #include "ip_info.h" |
| 79 | #include "lswfips.h" /* for libreswan_fipsmode() */ |
| 80 | # include "kernel_xfrm_interface.h" |
| 81 | #include "iface.h" |
| 82 | #include "ip_selector.h" |
| 83 | #include "ip_encap.h" |
| 84 | #include "show.h" |
| 85 | |
| 86 | static bool_Bool route_and_eroute(struct connection *c, |
| 87 | struct spd_route *sr, |
| 88 | struct state *st, |
| 89 | /* st or c */ |
| 90 | struct logger *logger); |
| 91 | |
| 92 | static bool_Bool eroute_connection(enum kernel_policy_op op, const char *opname, |
| 93 | const struct spd_route *sr, |
| 94 | ipsec_spi_t cur_spi, |
| 95 | ipsec_spi_t new_spi, |
| 96 | const struct kernel_route *route, |
| 97 | enum eroute_type esatype, |
| 98 | const struct kernel_encap *encap, |
| 99 | uint32_t sa_priority, |
| 100 | const struct sa_marks *sa_marks, |
| 101 | const uint32_t xfrm_if_id, |
| 102 | shunk_t sec_label, |
| 103 | struct logger *logger); |
| 104 | |
| 105 | bool_Bool can_do_IPcomp = true1; /* can system actually perform IPCOMP? */ |
| 106 | |
| 107 | static global_timer_cb kernel_scan_shunts; |
| 108 | static bool_Bool invoke_command(const char *verb, const char *verb_suffix, |
| 109 | const char *cmd, struct logger *logger); |
| 110 | |
| 111 | /* test if the routes required for two different connections agree |
| 112 | * It is assumed that the destination subnets agree; we are only |
| 113 | * testing that the interfaces and nexthops match. |
| 114 | */ |
| 115 | #define routes_agree(c, d)((c)->interface->ip_dev == (d)->interface->ip_dev && sameaddr(&(c)->spd.this.host_nexthop, & (d)->spd.this.host_nexthop)) \ |
| 116 | ((c)->interface->ip_dev == (d)->interface->ip_dev && \ |
| 117 | sameaddr(&(c)->spd.this.host_nexthop, &(d)->spd.this.host_nexthop)) |
| 118 | |
| 119 | const struct kernel_encap esp_transport_kernel_encap = { |
| 120 | .outer = 0, |
| 121 | .inner_proto = &ip_protocol_espip_protocols[IPPROTO_ESP], |
| 122 | .mode = ENCAP_MODE_TRANSPORT, |
| 123 | .rule[0] = { |
| 124 | .proto = ENCAP_PROTO_ESP, |
| 125 | .reqid = 0 |
| 126 | }, |
| 127 | }; |
| 128 | |
| 129 | struct bare_shunt { |
| 130 | policy_prio_t policy_prio; |
| 131 | ip_selector our_client; |
| 132 | ip_selector peer_client; |
| 133 | ip_said said; |
| 134 | int transport_proto; /* XXX: same value in local/remote */ |
| 135 | unsigned long count; |
| 136 | monotime_t last_activity; |
| 137 | |
| 138 | /* |
| 139 | * Note: "why" must be in stable storage (not auto, not heap) |
| 140 | * because we use it indefinitely without copying or pfreeing. |
| 141 | * Simple rule: use a string literal. |
| 142 | */ |
| 143 | const char *why; |
| 144 | |
| 145 | /* the connection from where it came - used to re-load /32 conns */ |
| 146 | co_serial_t from_serialno; |
| 147 | |
| 148 | struct bare_shunt *next; |
| 149 | }; |
| 150 | |
| 151 | static struct bare_shunt *bare_shunts = NULL((void*)0); |
| 152 | |
| 153 | #ifdef IPSEC_CONNECTION_LIMIT |
| 154 | static int num_ipsec_eroute = 0; |
| 155 | #endif |
| 156 | |
| 157 | static void jam_bare_shunt(struct jambuf *buf, const struct bare_shunt *bs) |
| 158 | { |
| 159 | jam(buf, "bare shunt %p ", bs); |
| 160 | jam_selector(buf, &bs->our_client); |
| 161 | jam(buf, " --%d--> ", bs->transport_proto); |
| 162 | jam_selector(buf, &bs->peer_client); |
| 163 | jam(buf, " => "); |
| 164 | jam_said(buf, &bs->said); |
| 165 | jam(buf, " "); |
| 166 | jam_policy_prio(buf, bs->policy_prio); |
| 167 | jam(buf, " %s", bs->why); |
| 168 | } |
| 169 | |
| 170 | static void llog_bare_shunt(lset_t rc_flags, struct logger *logger, |
| 171 | const struct bare_shunt *bs, const char *op) |
| 172 | { |
| 173 | LLOG_JAMBUF(rc_flags, logger, buf)for (char lswbuf[((size_t)1024)], *lswbuf_ = lswbuf; lswbuf_ != ((void*)0); lswbuf_ = ((void*)0)) for (struct jambuf jambuf = array_as_jambuf((lswbuf), sizeof(lswbuf)), *buf = &jambuf ; buf != ((void*)0); buf = ((void*)0)) for (({ if (((rc_flags ) & NO_PREFIX) == ((lset_t)0) && (((rc_flags) & STREAM_MASK) != DEBUG_STREAM || (cur_debugging & (((lset_t )1 << (DBG_ADD_PREFIX_IX)))))) { (logger)->object_vec ->jam_object_prefix(buf, (logger)->object); } }); buf != ((void*)0); jambuf_to_logger(buf, (logger), rc_flags), buf = ((void*)0)) { |
| 174 | jam(buf, "%s ", op); |
| 175 | jam_bare_shunt(buf, bs); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | static void dbg_bare_shunt(const char *op, const struct bare_shunt *bs) |
| 180 | { |
| 181 | LSWDBGP(DBG_BASE, buf)for (_Bool lswlog_p = (cur_debugging & (((lset_t)1 << (DBG_BASE_IX)))); lswlog_p; lswlog_p = 0) for (char lswbuf[( (size_t)1024)], *lswbuf_ = lswbuf; lswbuf_ != ((void*)0); lswbuf_ = ((void*)0)) for (struct jambuf jambuf = array_as_jambuf((lswbuf ), sizeof(lswbuf)), *buf = &jambuf; buf != ((void*)0); buf = ((void*)0)) for (; buf != ((void*)0); jambuf_to_logger(buf , &failsafe_logger, DEBUG_STREAM), buf = ((void*)0)) { |
| 182 | jam(buf, "%s ", op); |
| 183 | jam_bare_shunt(buf, bs); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | /* |
| 188 | * Note: "why" must be in stable storage (not auto, not heap) |
| 189 | * because we use it indefinitely without copying or pfreeing. |
| 190 | * Simple rule: use a string literal. |
| 191 | */ |
| 192 | void add_bare_shunt(const ip_selector *our_client, |
| 193 | const ip_selector *peer_client, |
| 194 | int transport_proto, ipsec_spi_t shunt_spi, |
| 195 | const char *why, struct logger *logger) |
| 196 | { |
| 197 | /* report any duplication; this should NOT happen */ |
| 198 | struct bare_shunt **bspp = bare_shunt_ptr(our_client, peer_client, transport_proto, why); |
| 199 | |
| 200 | if (bspp != NULL((void*)0)) { |
| 201 | /* maybe: passert(bsp == NULL); */ |
| 202 | llog_bare_shunt(RC_LOG, logger, *bspp, |
| 203 | "CONFLICTING existing"); |
| 204 | } |
| 205 | |
| 206 | struct bare_shunt *bs = alloc_thing(struct bare_shunt, "bare shunt")((struct bare_shunt*) alloc_bytes(sizeof(struct bare_shunt), ( "bare shunt"))); |
| 207 | |
| 208 | bs->why = why; |
| 209 | bs->our_client = *our_client; |
| 210 | bs->peer_client = *peer_client; |
| 211 | bs->transport_proto = transport_proto; |
| 212 | bs->policy_prio = BOTTOM_PRIO((policy_prio_t)0); |
| 213 | |
| 214 | bs->said = said_from_address_protocol_spi(selector_type(our_client)->address.any, |
| 215 | &ip_protocol_internalip_protocols[61], |
| 216 | htonl(shunt_spi)); |
| 217 | bs->count = 0; |
| 218 | bs->last_activity = mononow(); |
| 219 | |
| 220 | bs->next = bare_shunts; |
| 221 | bare_shunts = bs; |
| 222 | dbg_bare_shunt("add", bs); |
| 223 | |
| 224 | /* report duplication; this should NOT happen */ |
| 225 | if (bspp != NULL((void*)0)) { |
| 226 | llog_bare_shunt(RC_LOG, logger, bs, |
| 227 | "CONFLICTING new"); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | static reqid_t get_proto_reqid(reqid_t base, const struct ip_protocol *proto) |
| 232 | { |
| 233 | if (proto == &ip_protocol_compip_protocols[IPPROTO_COMP]) |
| 234 | return reqid_ipcomp(base); |
| 235 | |
| 236 | if (proto == &ip_protocol_espip_protocols[IPPROTO_ESP]) |
| 237 | return reqid_esp(base); |
| 238 | |
| 239 | if (proto == &ip_protocol_ahip_protocols[IPPROTO_AH]) |
| 240 | return reqid_ah(base); |
| 241 | |
| 242 | PASSERT_FAIL("bad protocol %s", proto->name)llog_passert(&failsafe_logger, ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 242, }; &here; }), "bad protocol %s", proto-> name); |
| 243 | } |
| 244 | |
| 245 | static const char *said_str(const ip_address dst, |
| 246 | const struct ip_protocol *sa_proto, |
| 247 | ipsec_spi_t spi, |
| 248 | said_buf *buf) |
| 249 | { |
| 250 | ip_said said = said_from_address_protocol_spi(dst, sa_proto, spi); |
| 251 | return str_said(&said, buf); |
| 252 | } |
| 253 | |
| 254 | /* Generate Unique SPI numbers. |
| 255 | * |
| 256 | * The specs say that the number must not be less than IPSEC_DOI_SPI_MIN. |
| 257 | * Pluto generates numbers not less than IPSEC_DOI_SPI_OUR_MIN, |
| 258 | * reserving numbers in between for manual keying (but we cannot so |
| 259 | * restrict numbers generated by our peer). |
| 260 | * XXX This should be replaced by a call to the kernel when |
| 261 | * XXX we get an API. |
| 262 | * The returned SPI is in network byte order. |
| 263 | * We use a random number as the initial SPI so that there is |
| 264 | * a good chance that different Pluto instances will choose |
| 265 | * different SPIs. This is good for two reasons. |
| 266 | * - the keying material for the initiator and responder only |
| 267 | * differs if the SPIs differ. |
| 268 | * - if Pluto is restarted, it would otherwise recycle the SPI |
| 269 | * numbers and confuse everything. When the kernel generates |
| 270 | * SPIs, this will no longer matter. |
| 271 | * We then allocate numbers sequentially. Thus we don't have to |
| 272 | * check if the number was previously used (assuming that no |
| 273 | * SPI lives longer than 4G of its successors). |
| 274 | */ |
| 275 | ipsec_spi_t get_ipsec_spi(ipsec_spi_t avoid, |
| 276 | const struct ip_protocol *proto, |
| 277 | const struct spd_route *sr, |
| 278 | bool_Bool tunnel, |
| 279 | struct logger *logger) |
| 280 | { |
| 281 | passert(proto == &ip_protocol_ah || proto == &ip_protocol_esp)({ _Bool assertion__ = proto == &ip_protocols[IPPROTO_AH] || proto == &ip_protocols[IPPROTO_ESP]; if (!assertion__ ) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 281, } ; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_passert(logger_, here, "%s", "proto == &ip_protocols[IPPROTO_AH] || proto == &ip_protocols[IPPROTO_ESP]" ); } (void) 1; }); |
| 282 | |
| 283 | ipsec_spi_t network_spi; |
| 284 | if (kernel_ops->get_spi != NULL((void*)0)) { |
| 285 | said_buf sb; |
| 286 | network_spi = kernel_ops->get_spi(&sr->that.host_addr, |
| 287 | &sr->this.host_addr, proto, tunnel, |
| 288 | get_proto_reqid(sr->reqid, proto), |
| 289 | IPSEC_DOI_SPI_OUR_MIN0x1000, 0xffffffffU, |
| 290 | said_str(sr->this.host_addr, proto, 0, &sb), |
| 291 | logger); |
| 292 | } else { |
| 293 | static ipsec_spi_t host_spi; /* host order, so not returned directly! */ |
| 294 | do { |
| 295 | get_rnd_bytes(&host_spi, sizeof(host_spi)); |
| 296 | network_spi = htonl(host_spi); |
| 297 | } while (host_spi < IPSEC_DOI_SPI_OUR_MIN0x1000 || network_spi == avoid); |
| 298 | } |
| 299 | |
| 300 | said_buf sb; |
| 301 | address_buf rb; |
| 302 | dbg("kernel: allocated incoming spi %s -> %s%s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: allocated incoming spi %s -> %s%s" , str_address(&sr->that.host_addr, &rb), said_str( sr->this.host_addr, proto, network_spi, &sb), tunnel ? " in tunnel-mode" : ""); } } |
| 303 | str_address(&sr->that.host_addr, &rb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: allocated incoming spi %s -> %s%s" , str_address(&sr->that.host_addr, &rb), said_str( sr->this.host_addr, proto, network_spi, &sb), tunnel ? " in tunnel-mode" : ""); } } |
| 304 | said_str(sr->this.host_addr, proto, network_spi, &sb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: allocated incoming spi %s -> %s%s" , str_address(&sr->that.host_addr, &rb), said_str( sr->this.host_addr, proto, network_spi, &sb), tunnel ? " in tunnel-mode" : ""); } } |
| 305 | tunnel ? " in tunnel-mode" : ""){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: allocated incoming spi %s -> %s%s" , str_address(&sr->that.host_addr, &rb), said_str( sr->this.host_addr, proto, network_spi, &sb), tunnel ? " in tunnel-mode" : ""); } }; |
| 306 | return network_spi; |
| 307 | } |
| 308 | |
| 309 | /* Generate Unique CPI numbers. |
| 310 | * The result is returned as an SPI (4 bytes) in network order! |
| 311 | * The real bits are in the nework-low-order 2 bytes. |
| 312 | * Modelled on get_ipsec_spi, but range is more limited: |
| 313 | * 256-61439. |
| 314 | * If we can't find one easily, return 0 (a bad SPI, |
| 315 | * no matter what order) indicating failure. |
| 316 | */ |
| 317 | ipsec_spi_t get_my_cpi(const struct spd_route *sr, bool_Bool tunnel, |
| 318 | struct logger *logger) |
| 319 | { |
| 320 | if (kernel_ops->get_spi != NULL((void*)0)) { |
| 321 | said_buf sb; |
| 322 | return kernel_ops->get_spi(&sr->that.host_addr, |
| 323 | &sr->this.host_addr, &ip_protocol_compip_protocols[IPPROTO_COMP], |
| 324 | tunnel, |
| 325 | get_proto_reqid(sr->reqid, &ip_protocol_compip_protocols[IPPROTO_COMP]), |
| 326 | IPCOMP_FIRST_NEGOTIATED256, |
| 327 | IPCOMP_LAST_NEGOTIATED61439, |
| 328 | said_str(sr->this.host_addr, &ip_protocol_compip_protocols[IPPROTO_COMP], 0, &sb), |
| 329 | logger); |
| 330 | } else { |
| 331 | static cpi_t first_busy_cpi = 0; |
| 332 | static cpi_t latest_cpi = 0; |
| 333 | |
| 334 | while (!(IPCOMP_FIRST_NEGOTIATED256 <= first_busy_cpi && |
| 335 | first_busy_cpi < IPCOMP_LAST_NEGOTIATED61439)) { |
| 336 | get_rnd_bytes((uint8_t *)&first_busy_cpi, |
| 337 | sizeof(first_busy_cpi)); |
| 338 | latest_cpi = first_busy_cpi; |
| 339 | } |
| 340 | |
| 341 | latest_cpi++; |
| 342 | |
| 343 | if (latest_cpi == first_busy_cpi) |
| 344 | find_my_cpi_gap(&latest_cpi, &first_busy_cpi); |
| 345 | |
| 346 | if (latest_cpi > IPCOMP_LAST_NEGOTIATED61439) |
| 347 | latest_cpi = IPCOMP_FIRST_NEGOTIATED256; |
| 348 | |
| 349 | return htonl((ipsec_spi_t)latest_cpi); |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Remove all characters but [-_.0-9a-zA-Z] from a character string. |
| 355 | * Truncates the result if it would be too long. |
| 356 | */ |
| 357 | |
| 358 | static void jam_clean_xauth_username(struct jambuf *buf, |
| 359 | const char *src, |
| 360 | struct logger *logger) |
| 361 | { |
| 362 | bool_Bool changed = false0; |
| 363 | const char *dst = jambuf_cursor(buf); |
| 364 | while (*src != '\0') { |
| 365 | if ((*src >= '0' && *src <= '9') || |
| 366 | (*src >= 'a' && *src <= 'z') || |
| 367 | (*src >= 'A' && *src <= 'Z') || |
| 368 | *src == '_' || *src == '-' || *src == '.') { |
| 369 | jam_char(buf, *src); |
| 370 | } else { |
| 371 | changed = true1; |
| 372 | } |
| 373 | src++; |
| 374 | } |
| 375 | if (changed || !jambuf_ok(buf)) { |
| 376 | llog(RC_LOG, logger, |
| 377 | "Warning: XAUTH username changed from '%s' to '%s'", |
| 378 | src, dst); |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | /* |
| 383 | * form the command string |
| 384 | * |
| 385 | * note: this mutates *st by calling get_sa_info(). |
| 386 | */ |
| 387 | static void jam_common_shell_out(struct jambuf *buf, const struct connection *c, |
| 388 | const struct spd_route *sr, struct state *st, |
| 389 | bool_Bool inbytes, bool_Bool outbytes) |
| 390 | { |
| 391 | ip_address ta; |
| 392 | |
| 393 | char *id_vname = NULL((void*)0); |
| 394 | |
| 395 | if (c->xfrmi != NULL((void*)0) && c->xfrmi->name != NULL((void*)0)) |
| 396 | id_vname = c->xfrmi->name; |
| 397 | else |
| 398 | id_vname = "NULL"; |
| 399 | |
| 400 | jam(buf, "PLUTO_CONNECTION='%s' ", c->name); |
| 401 | jam(buf, "PLUTO_CONNECTION_TYPE='%s' ", LIN(POLICY_TUNNEL, c->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy )) == (((lset_t)1 << (POLICY_TUNNEL_IX)))) ? "tunnel" : "transport"); |
| 402 | jam(buf, "PLUTO_VIRT_INTERFACE='%s' ", id_vname); |
| 403 | jam(buf, "PLUTO_INTERFACE='%s' ", c->interface == NULL((void*)0) ? "NULL" : c->interface->ip_dev->id_rname); |
| 404 | jam(buf, "PLUTO_XFRMI_ROUTE='%s' ", (c->xfrmi != NULL((void*)0) && c->xfrmi->if_id > 0) ? "yes" : ""); |
| 405 | |
| 406 | if (address_is_specified(sr->this.host_nexthop)) { |
| 407 | jam(buf, "PLUTO_NEXT_HOP='"); |
| 408 | jam_address(buf, &sr->this.host_nexthop); |
| 409 | jam(buf, "' "); |
| 410 | } |
| 411 | |
| 412 | ipstr_buf bme; |
| 413 | jam(buf, "PLUTO_ME='%s' ", ipstr(&sr->this.host_addr, &bme)); |
| 414 | |
| 415 | jam(buf, "PLUTO_MY_ID='"); |
| 416 | jam_id_bytes(buf, &sr->this.id, jam_shell_quoted_bytes); |
| 417 | jam(buf, "' "); |
| 418 | |
| 419 | jam(buf, "PLUTO_MY_CLIENT='"); |
| 420 | jam_selector_subnet(buf, &sr->this.client); |
| 421 | jam(buf, "' "); |
| 422 | |
| 423 | jam(buf, "PLUTO_MY_CLIENT_NET='"); |
| 424 | ta = selector_prefix(sr->this.client); |
| 425 | jam_address(buf, &ta); |
| 426 | jam(buf, "' "); |
| 427 | |
| 428 | jam(buf, "PLUTO_MY_CLIENT_MASK='"); |
| 429 | ta = selector_prefix_mask(sr->this.client); |
| 430 | jam_address(buf, &ta); |
| 431 | jam(buf, "' "); |
| 432 | |
| 433 | if (cidr_is_specified(sr->this.host_vtiip)) { |
| 434 | jam(buf, "VTI_IP='"); |
| 435 | jam_cidr(buf, &sr->this.host_vtiip); |
| 436 | jam(buf, "' "); |
| 437 | } |
| 438 | |
| 439 | if (cidr_is_specified(sr->this.ifaceip)) { |
| 440 | jam(buf, "INTERFACE_IP='"); |
| 441 | jam_cidr(buf, &sr->this.ifaceip); |
| 442 | jam(buf, "' "); |
| 443 | } |
| 444 | |
| 445 | jam(buf, "PLUTO_MY_PORT='%u' ", sr->this.port); |
| 446 | jam(buf, "PLUTO_MY_PROTOCOL='%u' ", sr->this.protocol); |
| 447 | jam(buf, "PLUTO_SA_REQID='%u' ", sr->reqid); |
| 448 | jam(buf, "PLUTO_SA_TYPE='%s' ", (st == NULL((void*)0) ? "none" : |
| 449 | st->st_esp.present ? "ESP" : |
| 450 | st->st_ah.present ? "AH" : |
| 451 | st->st_ipcomp.present ? "IPCOMP" : |
| 452 | "unknown?")); |
| 453 | ipstr_buf bpeer; |
| 454 | jam(buf, "PLUTO_PEER='%s' ", ipstr(&sr->that.host_addr, &bpeer)); |
| 455 | |
| 456 | jam(buf, "PLUTO_PEER_ID='"); |
| 457 | jam_id_bytes(buf, &sr->that.id, jam_shell_quoted_bytes); |
| 458 | jam(buf, "' "); |
| 459 | |
| 460 | /* for transport mode, things are complicated */ |
| 461 | jam(buf, "PLUTO_PEER_CLIENT='"); |
| 462 | if (!LIN(POLICY_TUNNEL, c->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy )) == (((lset_t)1 << (POLICY_TUNNEL_IX)))) && (st != NULL((void*)0) && LHAS(st->hidden_variables.st_nat_traversal, NATED_PEER)(((st->hidden_variables.st_nat_traversal) & ((lset_t)1 << (NATED_PEER))) != ((lset_t)0)))) { |
| 463 | jam(buf, "%s' ", ipstr(&sr->that.host_addr, &bpeer)); |
| 464 | } else { |
| 465 | jam_selector_subnet(buf, &sr->that.client); |
| 466 | jam(buf, "' "); |
| 467 | } |
| 468 | |
| 469 | jam(buf, "PLUTO_PEER_CLIENT_NET='"); |
| 470 | if (!LIN(POLICY_TUNNEL, c->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy )) == (((lset_t)1 << (POLICY_TUNNEL_IX)))) && (st != NULL((void*)0) && LHAS(st->hidden_variables.st_nat_traversal, NATED_PEER)(((st->hidden_variables.st_nat_traversal) & ((lset_t)1 << (NATED_PEER))) != ((lset_t)0)))) { |
| 471 | jam(buf, "%s' ", ipstr(&sr->that.host_addr, &bpeer)); |
| 472 | } else { |
| 473 | ta = selector_prefix(sr->that.client); |
| 474 | jam_address(buf, &ta); |
| 475 | jam(buf, "' "); |
| 476 | } |
| 477 | |
| 478 | jam(buf, "PLUTO_PEER_CLIENT_MASK='"); |
| 479 | ta = selector_prefix_mask(sr->that.client); |
| 480 | jam_address(buf, &ta); |
| 481 | jam(buf, "' "); |
| 482 | |
| 483 | jam(buf, "PLUTO_PEER_PORT='%u' ", sr->that.port); |
| 484 | jam(buf, "PLUTO_PEER_PROTOCOL='%u' ", sr->that.protocol); |
| 485 | |
| 486 | jam(buf, "PLUTO_PEER_CA='"); |
| 487 | for (struct pubkey_list *p = pluto_pubkeys; p != NULL((void*)0); p = p->next) { |
| 488 | struct pubkey *key = p->key; |
| 489 | int pathlen; /* value ignored */ |
| 490 | if (key->type == &pubkey_type_rsa && |
| 491 | same_id(&sr->that.id, &key->id) && |
| 492 | trusted_ca_nss(key->issuer, sr->that.ca, &pathlen)) { |
| 493 | jam_dn_or_null(buf, key->issuer, "", jam_shell_quoted_bytes); |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | jam(buf, "' "); |
| 498 | |
| 499 | jam(buf, "PLUTO_STACK='%s' ", kernel_ops->kern_name); |
| 500 | |
| 501 | if (c->metric != 0) { |
| 502 | jam(buf, "PLUTO_METRIC=%d ", c->metric); |
| 503 | } |
| 504 | |
| 505 | if (c->connmtu != 0) { |
| 506 | jam(buf, "PLUTO_MTU=%d ", c->connmtu); |
| 507 | } |
| 508 | |
| 509 | jam(buf, "PLUTO_ADDTIME='%" PRIu64"l" "u" "' ", st == NULL((void*)0) ? (uint64_t)0 : st->st_esp.add_time); |
| 510 | |
| 511 | jam(buf, "PLUTO_CONN_POLICY='"); |
| 512 | jam_policy(buf, c->policy); |
| 513 | if (NEVER_NEGOTIATE(c->policy)(((((c->policy)) & (((lset_t)1 << (POLICY_ENCRYPT_IX )) | ((lset_t)1 << (POLICY_AUTHENTICATE_IX)))) == ((lset_t )0)))) { |
| 514 | jam(buf, "+NEVER_NEGOTIATE"); |
| 515 | } |
| 516 | jam(buf, "' "); |
| 517 | |
| 518 | jam(buf, "PLUTO_CONN_KIND='"); |
| 519 | jam_enum(buf, &connection_kind_names, c->kind); |
| 520 | jam(buf,"' "); |
| 521 | |
| 522 | jam(buf, "PLUTO_CONN_ADDRFAMILY='ipv%d' ", address_type(&sr->this.host_addr)->ip_version); |
| 523 | jam(buf, "XAUTH_FAILED=%d ", (st != NULL((void*)0) && st->st_xauth_soft) ? 1 : 0); |
| 524 | |
| 525 | if (st != NULL((void*)0) && st->st_xauth_username[0] != '\0') { |
| 526 | jam(buf, "PLUTO_USERNAME='"); |
| 527 | jam_clean_xauth_username(buf, st->st_xauth_username, st->st_logger); |
| 528 | jam(buf, "' "); |
| 529 | } |
| 530 | |
| 531 | if (address_is_specified(sr->this.host_srcip)) { |
| 532 | jam(buf, "PLUTO_MY_SOURCEIP='"); |
| 533 | jam_address(buf, &sr->this.host_srcip); |
| 534 | jam(buf, "' "); |
| 535 | if (st != NULL((void*)0)) |
| 536 | jam(buf, "PLUTO_MOBIKE_EVENT='%s' ", |
| 537 | st->st_mobike_del_src_ip ? "yes" : ""); |
| 538 | } |
| 539 | |
| 540 | jam(buf, "PLUTO_IS_PEER_CISCO='%u' ", c->remotepeertype /* ??? kind of odd printing an enum with %u */); |
| 541 | jam(buf, "PLUTO_PEER_DNS_INFO='%s' ", (st != NULL((void*)0) && st->st_seen_cfg_dns != NULL((void*)0)) ? st->st_seen_cfg_dns : ""); |
| 542 | jam(buf, "PLUTO_PEER_DOMAIN_INFO='%s' ", (st != NULL((void*)0) && st->st_seen_cfg_domains != NULL((void*)0)) ? st->st_seen_cfg_domains : ""); |
| 543 | jam(buf, "PLUTO_PEER_BANNER='%s' ", (st != NULL((void*)0) && st->st_seen_cfg_banner != NULL((void*)0)) ? st->st_seen_cfg_banner : ""); |
| 544 | jam(buf, "PLUTO_CFG_SERVER='%u' ", sr->this.modecfg_server); |
| 545 | jam(buf, "PLUTO_CFG_CLIENT='%u' ", sr->this.modecfg_client); |
| 546 | #ifdef HAVE_NM1 |
| 547 | jam(buf, "PLUTO_NM_CONFIGURED='%u' ", c->nmconfigured); |
| 548 | #endif |
| 549 | |
| 550 | if (inbytes) { |
| 551 | jam(buf, "PLUTO_INBYTES='%" PRIu64"l" "u" "' ", |
| 552 | st->st_esp.present ? st->st_esp.our_bytes : |
| 553 | st->st_ah.present ? st->st_ah.our_bytes : |
| 554 | st->st_ipcomp.present ? st->st_ipcomp.our_bytes : |
| 555 | 0); |
| 556 | } |
| 557 | if (outbytes) { |
| 558 | jam(buf, "PLUTO_OUTBYTES='%" PRIu64"l" "u" "' ", |
| 559 | st->st_esp.present ? st->st_esp.peer_bytes : |
| 560 | st->st_ah.present ? st->st_ah.peer_bytes : |
| 561 | st->st_ipcomp.present ? st->st_ipcomp.peer_bytes : |
| 562 | 0); |
| 563 | } |
| 564 | |
| 565 | if (c->nflog_group != 0) { |
| 566 | jam(buf, "NFLOG=%d ", c->nflog_group); |
| 567 | } |
| 568 | |
| 569 | if (c->sa_marks.in.val != 0) { |
| 570 | jam(buf, "CONNMARK_IN=%" PRIu32"u" "/%#08" PRIx32"x" " ", |
| 571 | c->sa_marks.in.val, c->sa_marks.in.mask); |
| 572 | } |
| 573 | if (c->sa_marks.out.val != 0 && c->xfrmi == NULL((void*)0)) { |
| 574 | jam(buf, "CONNMARK_OUT=%" PRIu32"u" "/%#08" PRIx32"x" " ", |
| 575 | c->sa_marks.out.val, c->sa_marks.out.mask); |
| 576 | } |
| 577 | if (c->xfrmi != NULL((void*)0)) { |
| 578 | if (c->sa_marks.out.val != 0) { |
| 579 | /* user configured XFRMI_SET_MARK (a.k.a. output mark) add it */ |
| 580 | jam(buf, "PLUTO_XFRMI_FWMARK='%" PRIu32"u" "/%#08" PRIx32"x" "' ", |
| 581 | c->sa_marks.out.val, c->sa_marks.out.mask); |
| 582 | } else if (address_in_selector_range(sr->that.host_addr, sr->that.client)) { |
| 583 | jam(buf, "PLUTO_XFRMI_FWMARK='%" PRIu32"u" "/0xffffffff' ", |
| 584 | c->xfrmi->if_id); |
| 585 | } else { |
| 586 | address_buf bpeer; |
| 587 | selector_buf peerclient_str; |
| 588 | dbg("not adding PLUTO_XFRMI_FWMARK. PLUTO_PEER=%s is not inside PLUTO_PEER_CLIENT=%s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("not adding PLUTO_XFRMI_FWMARK. PLUTO_PEER=%s is not inside PLUTO_PEER_CLIENT=%s" , str_address(&sr->that.host_addr, &bpeer), str_selector (&sr->that.client, &peerclient_str)); } } |
| 589 | str_address(&sr->that.host_addr, &bpeer),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("not adding PLUTO_XFRMI_FWMARK. PLUTO_PEER=%s is not inside PLUTO_PEER_CLIENT=%s" , str_address(&sr->that.host_addr, &bpeer), str_selector (&sr->that.client, &peerclient_str)); } } |
| 590 | str_selector(&sr->that.client, &peerclient_str)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("not adding PLUTO_XFRMI_FWMARK. PLUTO_PEER=%s is not inside PLUTO_PEER_CLIENT=%s" , str_address(&sr->that.host_addr, &bpeer), str_selector (&sr->that.client, &peerclient_str)); } }; |
| 591 | jam(buf, "PLUTO_XFRMI_FWMARK='' "); |
| 592 | } |
| 593 | } |
| 594 | jam(buf, "VTI_IFACE='%s' ", c->vti_iface ? c->vti_iface : ""); |
| 595 | jam(buf, "VTI_ROUTING='%s' ", bool_str(c->vti_routing)); |
| 596 | jam(buf, "VTI_SHARED='%s' ", bool_str(c->vti_shared)); |
| 597 | |
| 598 | if (sr->this.has_cat) { |
| 599 | jam(buf, "CAT='YES' "); |
| 600 | } |
| 601 | |
| 602 | jam(buf, "SPI_IN=0x%x SPI_OUT=0x%x " /* SPI_IN SPI_OUT */, |
| 603 | (st == NULL((void*)0) ? 0 : st->st_esp.present ? ntohl(st->st_esp.attrs.spi) : |
| 604 | st->st_ah.present ? ntohl(st->st_ah.attrs.spi) : |
| 605 | st->st_ipcomp.present ? ntohl(st->st_ipcomp.attrs.spi) : 0), |
| 606 | (st == NULL((void*)0) ? 0 : st->st_esp.present ? ntohl(st->st_esp.our_spi) : |
| 607 | st->st_ah.present ? ntohl(st->st_ah.our_spi) : |
| 608 | st->st_ipcomp.present ? ntohl(st->st_ipcomp.our_spi) : 0)); |
| 609 | } |
| 610 | |
| 611 | /* |
| 612 | * form the command string |
| 613 | * |
| 614 | * note: this mutates *st by calling fmt_traffic_str |
| 615 | */ |
| 616 | bool_Bool fmt_common_shell_out(char *buf, size_t blen, const struct connection *c, |
| 617 | const struct spd_route *sr, struct state *st) |
| 618 | { |
| 619 | /* |
| 620 | * note: this mutates *st by calling get_sa_info |
| 621 | * |
| 622 | * XXX: does the get_sa_info() call order matter? Should this |
| 623 | * be a single "atomic" call? |
| 624 | * |
| 625 | * true==inbound: inbound updates OUR_BYTES; !inbound updates |
| 626 | * PEER_BYTES. |
| 627 | */ |
| 628 | bool_Bool outbytes = st != NULL((void*)0) && get_sa_info(st, false0, NULL((void*)0)); |
| 629 | bool_Bool inbytes = st != NULL((void*)0) && get_sa_info(st, true1, NULL((void*)0)); |
| 630 | struct jambuf jambuf = array_as_jambuf(buf, blen); |
| 631 | jam_common_shell_out(&jambuf, c, sr, st, inbytes, outbytes); |
| 632 | return jambuf_ok(&jambuf); |
| 633 | } |
| 634 | |
| 635 | bool_Bool do_command(const struct connection *c, |
| 636 | const struct spd_route *sr, |
| 637 | const char *verb, |
| 638 | struct state *st, |
| 639 | /* either st, or c's logger */ |
| 640 | struct logger *logger) |
| 641 | { |
| 642 | const char *verb_suffix; |
| 643 | |
| 644 | /* |
| 645 | * Support for skipping updown, eg leftupdown="" |
| 646 | * Useful on busy servers that do not need to use updown for anything |
| 647 | */ |
| 648 | if (sr->this.updown == NULL((void*)0) || streq(sr->this.updown, "%disabled")(strcmp((sr->this.updown), ("%disabled")) == 0)) { |
| 649 | dbg("kernel: skipped updown %s command - disabled per policy", verb){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: skipped updown %s command - disabled per policy" , verb); } }; |
| 650 | return true1; |
| 651 | } |
| 652 | dbg("kernel: running updown command \"%s\" for verb %s ", sr->this.updown, verb){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: running updown command \"%s\" for verb %s " , sr->this.updown, verb); } }; |
| 653 | |
| 654 | /* |
| 655 | * Figure out which verb suffix applies. |
| 656 | * NOTE: this is a duplicate of code in mast_do_command_vs. |
| 657 | */ |
| 658 | { |
| 659 | const char *hs, *cs; |
| 660 | |
| 661 | switch (addrtypeof(&sr->this.host_addr)) { |
| 662 | case AF_INET2: |
| 663 | hs = "-host"; |
| 664 | cs = "-client"; |
| 665 | break; |
| 666 | case AF_INET610: |
| 667 | hs = "-host-v6"; |
| 668 | cs = "-client-v6"; |
| 669 | break; |
| 670 | default: |
| 671 | llog(RC_LOG_SERIOUS, logger, "unknown address family"); |
| 672 | return false0; |
| 673 | } |
| 674 | verb_suffix = selector_range_eq_address(sr->this.client, sr->this.host_addr) ? hs : cs; |
| 675 | } |
| 676 | |
| 677 | dbg("kernel: command executing %s%s", verb, verb_suffix){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: command executing %s%s", verb, verb_suffix ); } }; |
| 678 | |
| 679 | char common_shell_out_str[2048]; |
| 680 | if (!fmt_common_shell_out(common_shell_out_str, |
| 681 | sizeof(common_shell_out_str), c, sr, |
| 682 | st)) { |
| 683 | llog(RC_LOG_SERIOUS, logger, |
| 684 | "%s%s command too long!", verb, |
| 685 | verb_suffix); |
| 686 | return false0; |
| 687 | } |
| 688 | |
| 689 | /* must free */ |
| 690 | char *cmd = alloc_printf("2>&1 " /* capture stderr along with stdout */ |
| 691 | "PLUTO_VERB='%s%s' " |
| 692 | "%s" /* other stuff */ |
| 693 | "%s", /* actual script */ |
| 694 | verb, verb_suffix, |
| 695 | common_shell_out_str, |
| 696 | sr->this.updown); |
| 697 | if (cmd == NULL((void*)0)) { |
| 698 | llog(RC_LOG_SERIOUS, logger, |
| 699 | "%s%s command too long!", verb, |
| 700 | verb_suffix); |
| 701 | return false0; |
| 702 | } |
| 703 | |
| 704 | bool_Bool ok = invoke_command(verb, verb_suffix, cmd, logger); |
| 705 | pfree(cmd); |
| 706 | return ok; |
| 707 | } |
| 708 | |
| 709 | bool_Bool invoke_command(const char *verb, const char *verb_suffix, const char *cmd, |
| 710 | struct logger *logger) |
| 711 | { |
| 712 | # define CHUNK_WIDTH 80 /* units for cmd logging */ |
| 713 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 714 | int slen = strlen(cmd); |
| 715 | int i; |
| 716 | |
| 717 | DBG_log("executing %s%s: %s", |
| 718 | verb, verb_suffix, cmd); |
| 719 | DBG_log("popen cmd is %d chars long", slen); |
| 720 | for (i = 0; i < slen; i += CHUNK_WIDTH) |
| 721 | DBG_log("cmd(%4d):%.*s:", i, |
| 722 | slen-i < CHUNK_WIDTH? slen-i : CHUNK_WIDTH, |
| 723 | &cmd[i]); |
| 724 | } |
| 725 | # undef CHUNK_WIDTH |
| 726 | |
| 727 | |
| 728 | { |
| 729 | /* |
| 730 | * invoke the script, catching stderr and stdout |
| 731 | * It may be of concern that some file descriptors will |
| 732 | * be inherited. For the ones under our control, we |
| 733 | * have done fcntl(fd, F_SETFD, FD_CLOEXEC) to prevent this. |
| 734 | * Any used by library routines (perhaps the resolver or |
| 735 | * syslog) will remain. |
| 736 | */ |
| 737 | FILE *f = popen(cmd, "r"); |
| 738 | |
| 739 | if (f == NULL((void*)0)) { |
| 740 | #ifdef HAVE_BROKEN_POPEN |
| 741 | /* |
| 742 | * See bug #1067 Angstrom Linux on a arm7 has no |
| 743 | * popen() |
| 744 | */ |
| 745 | if (errno(*__errno_location ()) == ENOSYS38) { |
| 746 | /* |
| 747 | * Try system(), though it will not give us |
| 748 | * output |
| 749 | */ |
| 750 | DBG_log("unable to popen(), falling back to system()"); |
| 751 | system(cmd); |
| 752 | return true1; |
| 753 | } |
| 754 | #endif |
| 755 | llog(RC_LOG_SERIOUS, logger, |
| 756 | "unable to popen %s%s command", |
| 757 | verb, verb_suffix); |
| 758 | return false0; |
| 759 | } |
| 760 | |
| 761 | /* log any output */ |
| 762 | for (;; ) { |
| 763 | /* |
| 764 | * if response doesn't fit in this buffer, it will |
| 765 | * be folded |
| 766 | */ |
| 767 | char resp[256]; |
| 768 | |
| 769 | if (fgets(resp, sizeof(resp), f) == NULL((void*)0)) { |
| 770 | if (ferror(f)) { |
| 771 | log_errno(logger, errno,{ int e_ = (*__errno_location ()); log_error(logger, e_, "fgets failed on output of %s%s command" , verb, verb_suffix); } |
| 772 | "fgets failed on output of %s%s command",{ int e_ = (*__errno_location ()); log_error(logger, e_, "fgets failed on output of %s%s command" , verb, verb_suffix); } |
| 773 | verb, verb_suffix){ int e_ = (*__errno_location ()); log_error(logger, e_, "fgets failed on output of %s%s command" , verb, verb_suffix); }; |
| 774 | pclose(f); |
| 775 | return false0; |
| 776 | } else { |
| 777 | passert(feof(f))({ _Bool assertion__ = feof(f); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 777, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert( logger_, here, "%s", "feof(f)"); } (void) 1; }); |
| 778 | break; |
| 779 | } |
| 780 | } else { |
| 781 | char *e = resp + strlen(resp); |
| 782 | |
| 783 | if (e > resp && e[-1] == '\n') |
| 784 | e[-1] = '\0'; /* trim trailing '\n' */ |
| 785 | llog(RC_LOG, logger, "%s%s output: %s", verb, |
| 786 | verb_suffix, resp); |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | /* report on and react to return code */ |
| 791 | { |
| 792 | int r = pclose(f); |
| 793 | |
| 794 | if (r == -1) { |
| 795 | log_errno(logger, errno,{ int e_ = (*__errno_location ()); log_error(logger, e_, "pclose failed for %s%s command" , verb, verb_suffix); } |
| 796 | "pclose failed for %s%s command",{ int e_ = (*__errno_location ()); log_error(logger, e_, "pclose failed for %s%s command" , verb, verb_suffix); } |
| 797 | verb, verb_suffix){ int e_ = (*__errno_location ()); log_error(logger, e_, "pclose failed for %s%s command" , verb, verb_suffix); }; |
| 798 | return false0; |
| 799 | } else if (WIFEXITED(r)(((r) & 0x7f) == 0)) { |
| 800 | if (WEXITSTATUS(r)(((r) & 0xff00) >> 8) != 0) { |
| 801 | llog(RC_LOG_SERIOUS, logger, |
| 802 | "%s%s command exited with status %d", |
| 803 | verb, verb_suffix, |
| 804 | WEXITSTATUS(r)(((r) & 0xff00) >> 8)); |
| 805 | return false0; |
| 806 | } |
| 807 | } else if (WIFSIGNALED(r)(((signed char) (((r) & 0x7f) + 1) >> 1) > 0)) { |
| 808 | llog(RC_LOG_SERIOUS, logger, |
| 809 | "%s%s command exited with signal %d", |
| 810 | verb, verb_suffix, WTERMSIG(r)((r) & 0x7f)); |
| 811 | return false0; |
| 812 | } else { |
| 813 | llog(RC_LOG_SERIOUS, logger, |
| 814 | "%s%s command exited with unknown status %d", |
| 815 | verb, verb_suffix, r); |
| 816 | return false0; |
| 817 | } |
| 818 | } |
| 819 | } |
| 820 | return true1; |
| 821 | } |
| 822 | |
| 823 | /* |
| 824 | * Build an array of encapsulation rules/tmpl. Order things |
| 825 | * inner-most to outer-most so the last entry is what will go across |
| 826 | * the wire. A -1 entry of the packet to be encapsulated is implied. |
| 827 | */ |
| 828 | |
| 829 | static struct kernel_encap kernel_encap_from_spd(lset_t policy, |
| 830 | const struct spd_route *spd, |
| 831 | enum encap_mode mode) |
| 832 | { |
| 833 | struct kernel_encap encap = { |
| 834 | .mode = mode, |
| 835 | }; |
| 836 | |
| 837 | /* |
| 838 | * XXX: remember construct this inner-to-outer; which is the |
| 839 | * same as the kernel_sa array. |
| 840 | */ |
| 841 | |
| 842 | struct encap_rule *outer = encap.rule - 1; |
| 843 | if (policy & POLICY_COMPRESS((lset_t)1 << (POLICY_COMPRESS_IX))) { |
| 844 | outer++; |
| 845 | outer->reqid = reqid_ipcomp(spd->reqid); |
| 846 | outer->proto = ENCAP_PROTO_IPCOMP; |
| 847 | } |
| 848 | if (policy & POLICY_ENCRYPT((lset_t)1 << (POLICY_ENCRYPT_IX))) { |
| 849 | outer++; |
| 850 | outer->reqid = reqid_esp(spd->reqid); |
| 851 | outer->proto = ENCAP_PROTO_ESP; |
| 852 | } |
| 853 | if (policy & POLICY_AUTHENTICATE((lset_t)1 << (POLICY_AUTHENTICATE_IX))) { |
| 854 | outer++; |
| 855 | outer->reqid = reqid_ah(spd->reqid); |
| 856 | outer->proto = ENCAP_PROTO_AH; |
| 857 | } |
| 858 | |
| 859 | passert(outer < encap.rule + elemsof(encap.rule))({ _Bool assertion__ = outer < encap.rule + (sizeof(encap. rule) / sizeof(*(encap.rule))); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 859, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert( logger_, here, "%s", "outer < encap.rule + (sizeof(encap.rule) / sizeof(*(encap.rule)))" ); } (void) 1; }); |
| 860 | encap.outer = outer - encap.rule; /* could be -1 */ |
| 861 | passert(encap.outer < (int)elemsof(encap.rule))({ _Bool assertion__ = encap.outer < (int)(sizeof(encap.rule ) / sizeof(*(encap.rule))); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 861, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert( logger_, here, "%s", "encap.outer < (int)(sizeof(encap.rule) / sizeof(*(encap.rule)))" ); } (void) 1; }); |
| 862 | |
| 863 | /* |
| 864 | * XXX: Inner here refers to the inner-most rule which, for a |
| 865 | * tunnel, needs the tunnel bit set. For transport, why it |
| 866 | * uses outer remains a mystery (suspect it just needs to be |
| 867 | * !INT !IPIP). |
| 868 | */ |
| 869 | if (outer >= encap.rule) { |
| 870 | encap.inner_proto = (mode == ENCAP_MODE_TUNNEL ? &ip_protocol_ipipip_protocols[IPPROTO_IPIP] : |
| 871 | mode == ENCAP_MODE_TRANSPORT ? protocol_by_ipproto(outer->proto) : |
| 872 | NULL((void*)0)); |
| 873 | pexpect(encap.inner_proto != NULL)({ _Bool assertion__ = encap.inner_proto != ((void*)0); if (! assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 873, }; &here; }); const struct logger *logger_ = & failsafe_logger; llog_pexpect(logger_, here_, "%s", "encap.inner_proto != ((void*)0)" ); } assertion__; }); |
| 874 | } |
| 875 | |
| 876 | return encap; |
| 877 | } |
| 878 | |
| 879 | static struct kernel_encap kernel_encap_from_state(const struct state *st, |
| 880 | const struct spd_route *spd) |
| 881 | { |
| 882 | bool_Bool tunnel = false0; |
| 883 | lset_t policy = LEMPTY((lset_t)0); |
| 884 | if (st->st_ipcomp.present) { |
| 885 | policy |= POLICY_COMPRESS((lset_t)1 << (POLICY_COMPRESS_IX)); |
| 886 | tunnel |= (st->st_ipcomp.attrs.mode == ENCAPSULATION_MODE_TUNNEL); |
| 887 | } |
| 888 | |
| 889 | if (st->st_esp.present) { |
| 890 | policy |= POLICY_ENCRYPT((lset_t)1 << (POLICY_ENCRYPT_IX)); |
| 891 | tunnel |= (st->st_esp.attrs.mode == ENCAPSULATION_MODE_TUNNEL); |
| 892 | } |
| 893 | |
| 894 | if (st->st_ah.present) { |
| 895 | policy |= POLICY_AUTHENTICATE((lset_t)1 << (POLICY_AUTHENTICATE_IX)); |
| 896 | tunnel |= (st->st_ah.attrs.mode == ENCAPSULATION_MODE_TUNNEL); |
| 897 | } |
| 898 | |
| 899 | enum encap_mode mode = (tunnel ? ENCAP_MODE_TUNNEL : ENCAP_MODE_TRANSPORT); |
| 900 | struct kernel_encap encap = kernel_encap_from_spd(policy, spd, mode); |
| 901 | return encap; |
| 902 | } |
| 903 | |
| 904 | static struct kernel_route kernel_route_from_spd(const struct spd_route *spd, |
| 905 | enum encap_mode mode, |
| 906 | enum encap_direction flow) |
| 907 | { |
| 908 | /* |
| 909 | * With pfkey and transport mode with nat-traversal we need to |
| 910 | * change the remote IPsec SA to point to external ip of the |
| 911 | * peer. Here we substitute real client ip with NATD ip. |
| 912 | * |
| 913 | * Bug #1004 fix. |
| 914 | * |
| 915 | * There really isn't "client" with XFRM and transport mode so |
| 916 | * eroute must be done to natted, visible ip. If we don't hide |
| 917 | * internal IP, communication doesn't work. |
| 918 | */ |
| 919 | ip_selector remote_client; |
| 920 | switch (mode) { |
| 921 | case ENCAP_MODE_TUNNEL: |
| 922 | remote_client = spd->that.client; |
| 923 | break; |
| 924 | case ENCAP_MODE_TRANSPORT: |
| 925 | remote_client = selector_from_address_protocol_port(spd->that.host_addr, |
| 926 | protocol_by_ipproto(spd->that.protocol), |
| 927 | selector_port(spd->that.client)); |
| 928 | break; |
| 929 | default: |
| 930 | bad_case(mode)libreswan_bad_case("mode", (mode), ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 930, }; &here; })); |
| 931 | } |
| 932 | selector_buf os, ns; |
| 933 | dbg("%s() changing remote selector %s to %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() changing remote selector %s to %s", __func__ , str_selector(&spd->that.client, &os), str_selector (&remote_client, &ns)); } } |
| 934 | __func__,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() changing remote selector %s to %s", __func__ , str_selector(&spd->that.client, &os), str_selector (&remote_client, &ns)); } } |
| 935 | str_selector(&spd->that.client, &os),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() changing remote selector %s to %s", __func__ , str_selector(&spd->that.client, &os), str_selector (&remote_client, &ns)); } } |
| 936 | str_selector(&remote_client, &ns)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() changing remote selector %s to %s", __func__ , str_selector(&spd->that.client, &os), str_selector (&remote_client, &ns)); } }; |
| 937 | |
| 938 | struct kernel_route route = {0}; |
| 939 | struct route_end *local; |
| 940 | struct route_end *remote; |
| 941 | |
| 942 | switch (flow) { |
| 943 | case ENCAP_DIRECTION_INBOUND: |
| 944 | remote = &route.src; |
| 945 | local = &route.dst; |
| 946 | break; |
| 947 | case ENCAP_DIRECTION_OUTBOUND: |
| 948 | local = &route.src; |
| 949 | remote = &route.dst; |
| 950 | break; |
| 951 | default: |
| 952 | bad_case(flow)libreswan_bad_case("flow", (flow), ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 952, }; &here; })); |
| 953 | } |
| 954 | |
| 955 | local->client = spd->this.client; |
| 956 | remote->client = remote_client; |
| 957 | local->host_addr = spd->this.host_addr; |
| 958 | remote->host_addr = spd->that.host_addr; |
| 959 | |
| 960 | return route; |
| 961 | } |
| 962 | |
| 963 | /* |
| 964 | * handle co-terminal attempt of the "near" kind |
| 965 | * |
| 966 | * Note: it mutates both inside and outside |
| 967 | */ |
| 968 | |
| 969 | enum routability { |
| 970 | route_impossible, |
| 971 | route_easy, |
| 972 | route_nearconflict, |
| 973 | route_farconflict, |
| 974 | route_unnecessary |
| 975 | }; |
| 976 | |
| 977 | static enum routability note_nearconflict(struct connection *outside, /* CK_PERMANENT */ |
| 978 | struct connection *inside, /* CK_TEMPLATE */ |
| 979 | struct logger *logger) |
| 980 | { |
| 981 | /* |
| 982 | * this is a co-terminal attempt of the "near" kind. |
| 983 | * when chaining, we chain from inside to outside |
| 984 | * |
| 985 | * XXX permit multiple deep connections? |
| 986 | */ |
| 987 | passert(inside->policy_next == NULL)({ _Bool assertion__ = inside->policy_next == ((void*)0); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 987, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "inside->policy_next == ((void*)0)" ); } (void) 1; }); |
| 988 | |
| 989 | inside->policy_next = outside; |
| 990 | |
| 991 | /* |
| 992 | * since we are going to steal the eroute from the secondary |
| 993 | * policy, we need to make sure that it no longer thinks that |
| 994 | * it owns the eroute. |
| 995 | */ |
| 996 | outside->spd.eroute_owner = SOS_NOBODY0; |
| 997 | outside->spd.routing = RT_UNROUTED_KEYED; |
| 998 | |
| 999 | /* |
| 1000 | * set the priority of the new eroute owner to be higher |
| 1001 | * than that of the current eroute owner |
| 1002 | */ |
| 1003 | inside->policy_prio = outside->policy_prio + 1; |
| 1004 | |
| 1005 | connection_buf inst; |
| 1006 | llog(RC_LOG_SERIOUS, logger, |
| 1007 | "conflict on eroute (%s), switching eroute to %s and linking %s", |
| 1008 | str_connection_instance(inside, &inst), |
| 1009 | inside->name, outside->name); |
| 1010 | |
| 1011 | return route_nearconflict; |
| 1012 | } |
| 1013 | |
| 1014 | /* |
| 1015 | * Note: this may mutate c |
| 1016 | */ |
| 1017 | static enum routability could_route(struct connection *c, struct logger *logger) |
| 1018 | { |
| 1019 | esb_buf b; |
| 1020 | dbg("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label="PRI_SHUNK,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1021 | c->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1022 | enum_show(&connection_kind_names, c->kind, &b),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1023 | bool_str(c->spd.that.has_client),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1024 | bool_str(c->policy & POLICY_OPPORTUNISTIC),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1025 | c->spd.this.host_port,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1026 | pri_shunk(c->config->sec_label)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u sec_label=" "%.*s", c->name, enum_show(&connection_kind_names, c-> kind, &b), bool_str(c->spd.that.has_client), bool_str( c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX ))), c->spd.this.host_port, ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } }; |
| 1027 | |
| 1028 | /* it makes no sense to route a connection that is ISAKMP-only */ |
| 1029 | if (!NEVER_NEGOTIATE(c->policy)(((((c->policy)) & (((lset_t)1 << (POLICY_ENCRYPT_IX )) | ((lset_t)1 << (POLICY_AUTHENTICATE_IX)))) == ((lset_t )0))) && !HAS_IPSEC_POLICY(c->policy)(((c->policy) & (((lset_t)1 << (POLICY_NOPMTUDISC_IX )) - ((lset_t)1 << (POLICY_ENCRYPT_IX)) + ((lset_t)1 << (POLICY_NOPMTUDISC_IX)))) != 0)) { |
| 1030 | llog(RC_ROUTE, logger, |
| 1031 | "cannot route an ISAKMP-only connection"); |
| 1032 | return route_impossible; |
| 1033 | } |
| 1034 | |
| 1035 | /* |
| 1036 | * if this is a transport SA, and overlapping SAs are supported, then |
| 1037 | * this route is not necessary at all. |
| 1038 | */ |
| 1039 | if (kernel_ops->overlap_supported && !LIN(POLICY_TUNNEL, c->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy )) == (((lset_t)1 << (POLICY_TUNNEL_IX))))) |
| 1040 | return route_unnecessary; |
| 1041 | |
| 1042 | /* |
| 1043 | * If this is a template connection, we cannot route. |
| 1044 | * However, opportunistic and sec_label templates can be |
| 1045 | * routed (as in install the policy). |
| 1046 | */ |
| 1047 | if (!c->spd.that.has_client && |
| 1048 | c->kind == CK_TEMPLATE && |
| 1049 | !(c->policy & POLICY_OPPORTUNISTIC((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))) && |
| 1050 | c->config->sec_label.len == 0) { |
| 1051 | policy_buf pb; |
| 1052 | llog(RC_ROUTE, logger, |
| 1053 | "cannot route template policy of %s", |
| 1054 | str_policy(c->policy, &pb)); |
| 1055 | return route_impossible; |
| 1056 | } |
| 1057 | |
| 1058 | struct spd_route *esr, *rosr; |
| 1059 | struct connection *ero, /* who, if anyone, owns our eroute? */ |
| 1060 | *ro = route_owner(c, &c->spd, &rosr, &ero, &esr); /* who owns our route? */ |
| 1061 | |
| 1062 | /* |
| 1063 | * If there is already a route for peer's client subnet |
| 1064 | * and it disagrees about interface or nexthop, we cannot steal it. |
| 1065 | * Note: if this connection is already routed (perhaps for another |
| 1066 | * state object), the route will agree. |
| 1067 | * This is as it should be -- it will arise during rekeying. |
| 1068 | */ |
| 1069 | if (ro != NULL((void*)0) && !routes_agree(ro, c)((ro)->interface->ip_dev == (c)->interface->ip_dev && sameaddr(&(ro)->spd.this.host_nexthop, & (c)->spd.this.host_nexthop))) { |
| 1070 | |
| 1071 | if (!compatible_overlapping_connections(c, ero)) { |
| 1072 | /* |
| 1073 | * Another connection is already using the eroute. |
| 1074 | * TODO: XFRM supports this. For now, only allow this for OE |
| 1075 | */ |
| 1076 | if ((c->policy & POLICY_OPPORTUNISTIC((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))) == LEMPTY((lset_t)0)) { |
| 1077 | connection_buf cib; |
| 1078 | llog(RC_LOG_SERIOUS, logger, |
| 1079 | "cannot route -- route already in use for "PRI_CONNECTION"\"%s\"%s""", |
| 1080 | pri_connection(ro, &cib)(ro)->name, str_connection_instance(ro, &cib)); |
| 1081 | return route_impossible; |
| 1082 | } else { |
| 1083 | connection_buf cib; |
| 1084 | llog(RC_LOG_SERIOUS, logger, |
| 1085 | "cannot route -- route already in use for "PRI_CONNECTION"\"%s\"%s"" - but allowing anyway", |
| 1086 | pri_connection(ro, &cib)(ro)->name, str_connection_instance(ro, &cib)); |
| 1087 | } |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | |
| 1092 | /* if there is an eroute for another connection, there is a problem */ |
| 1093 | if (ero != NULL((void*)0) && ero != c) { |
| 1094 | /* |
| 1095 | * note, wavesec (PERMANENT) goes *outside* and |
| 1096 | * OE goes *inside* (TEMPLATE) |
| 1097 | */ |
| 1098 | if (ero->kind == CK_PERMANENT && |
| 1099 | c->kind == CK_TEMPLATE) { |
| 1100 | return note_nearconflict(ero, c, logger); |
| 1101 | } else if (c->kind == CK_PERMANENT && |
| 1102 | ero->kind == CK_TEMPLATE) { |
| 1103 | return note_nearconflict(c, ero, logger); |
| 1104 | } |
| 1105 | |
| 1106 | /* look along the chain of policies for one with the same name */ |
| 1107 | |
| 1108 | for (struct connection *ep = ero; ep != NULL((void*)0); ep = ero->policy_next) { |
| 1109 | if (ep->kind == CK_TEMPLATE && |
| 1110 | streq(ep->name, c->name)(strcmp((ep->name), (c->name)) == 0)) |
| 1111 | return route_easy; |
| 1112 | } |
| 1113 | |
| 1114 | /* |
| 1115 | * If we fell off the end of the list, then we found no |
| 1116 | * TEMPLATE so there must be a conflict that we can't resolve. |
| 1117 | * As the names are not equal, then we aren't |
| 1118 | * replacing/rekeying. |
| 1119 | * |
| 1120 | * ??? should there not be a conflict if ANYTHING in the list, |
| 1121 | * other than c, conflicts with c? |
| 1122 | */ |
| 1123 | |
| 1124 | if (LDISJOINT(POLICY_OVERLAPIP, c->policy | ero->policy)(((((lset_t)1 << (POLICY_OVERLAPIP_IX))) & (c->policy | ero->policy)) == ((lset_t)0)) && c->config->sec_label.len == 0) { |
| 1125 | /* |
| 1126 | * another connection is already using the eroute, |
| 1127 | * TODO: XFRM apparently can do this though |
| 1128 | */ |
| 1129 | connection_buf erob; |
| 1130 | llog(RC_LOG_SERIOUS, logger, |
| 1131 | "cannot install eroute -- it is in use for "PRI_CONNECTION"\"%s\"%s"" #%lu", |
| 1132 | pri_connection(ero, &erob)(ero)->name, str_connection_instance(ero, &erob), esr->eroute_owner); |
| 1133 | return route_impossible; |
| 1134 | } |
| 1135 | |
| 1136 | connection_buf erob; |
| 1137 | dbg("kernel: overlapping permitted with "PRI_CONNECTION" #%lu",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: overlapping permitted with ""\"%s\"%s" " #%lu", (ero)->name, str_connection_instance(ero, &erob ), esr->eroute_owner); } } |
| 1138 | pri_connection(ero, &erob), esr->eroute_owner){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: overlapping permitted with ""\"%s\"%s" " #%lu", (ero)->name, str_connection_instance(ero, &erob ), esr->eroute_owner); } }; |
| 1139 | } |
| 1140 | return route_easy; |
| 1141 | } |
| 1142 | |
| 1143 | bool_Bool trap_connection(struct connection *c) |
| 1144 | { |
| 1145 | enum routability r = could_route(c, c->logger); |
| 1146 | |
| 1147 | switch (r) { |
| 1148 | case route_impossible: |
| 1149 | return false0; |
| 1150 | |
| 1151 | case route_easy: |
| 1152 | case route_nearconflict: |
| 1153 | if (c->ike_version == IKEv2 && c->config->sec_label.len > 0) { |
| 1154 | /* |
| 1155 | * IKEv2 security labels are treated |
| 1156 | * specially: this allocates and installs a |
| 1157 | * full REQID, the route_and_eroute() call |
| 1158 | * does not (and who knows what else it does). |
| 1159 | */ |
| 1160 | dbg("kernel: installing SE trap policy"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: installing SE trap policy"); } }; |
| 1161 | return install_se_connection_policies(c, c->logger); |
| 1162 | } else if (c->spd.routing >= RT_ROUTED_TUNNEL) { |
| 1163 | /* |
| 1164 | * RT_ROUTED_TUNNEL is treated specially: we |
| 1165 | * don't override because we don't want to |
| 1166 | * lose track of the IPSEC_SAs etc. |
| 1167 | * |
| 1168 | * ??? The test treats RT_UNROUTED_KEYED |
| 1169 | * specially too. |
| 1170 | * |
| 1171 | * XXX: ah, I was wondering ... |
| 1172 | */ |
| 1173 | dbg("kernel: skipping trap policy as >=ROUTED_TUNNEL"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: skipping trap policy as >=ROUTED_TUNNEL" ); } }; |
| 1174 | return true1; |
| 1175 | } else { |
| 1176 | return route_and_eroute(c, &c->spd, NULL((void*)0), c->logger); |
| 1177 | } |
| 1178 | |
| 1179 | case route_farconflict: |
| 1180 | return false0; |
| 1181 | |
| 1182 | case route_unnecessary: |
| 1183 | return true1; |
| 1184 | |
| 1185 | default: |
| 1186 | bad_case(r)libreswan_bad_case("r", (r), ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1186, }; &here; })); |
| 1187 | } |
| 1188 | } |
| 1189 | |
| 1190 | /* |
| 1191 | * Add/replace/delete a shunt eroute. |
| 1192 | * |
| 1193 | * Such an eroute determines the fate of packets without the use |
| 1194 | * of any SAs. These are defaults, in effect. |
| 1195 | * If a negotiation has not been attempted, use %trap. |
| 1196 | * If negotiation has failed, the choice between %trap/%pass/%drop/%reject |
| 1197 | * is specified in the policy of connection c. |
| 1198 | */ |
| 1199 | |
| 1200 | bool_Bool shunt_policy(enum kernel_policy_op op, |
| 1201 | const struct connection *c, |
| 1202 | const struct spd_route *sr, |
| 1203 | enum routing_t rt_kind, |
| 1204 | const char *what, |
| 1205 | struct logger *logger) |
| 1206 | { |
| 1207 | LSWDBGP(DBG_BASE, buf)for (_Bool lswlog_p = (cur_debugging & (((lset_t)1 << (DBG_BASE_IX)))); lswlog_p; lswlog_p = 0) for (char lswbuf[( (size_t)1024)], *lswbuf_ = lswbuf; lswbuf_ != ((void*)0); lswbuf_ = ((void*)0)) for (struct jambuf jambuf = array_as_jambuf((lswbuf ), sizeof(lswbuf)), *buf = &jambuf; buf != ((void*)0); buf = ((void*)0)) for (; buf != ((void*)0); jambuf_to_logger(buf , &failsafe_logger, DEBUG_STREAM), buf = ((void*)0)) { |
| 1208 | jam(buf, "kernel: %s() %s %s", |
| 1209 | __func__, enum_name_short(&kernel_policy_op_names, op), what); |
| 1210 | |
| 1211 | jam(buf, " "); |
| 1212 | jam_connection(buf, c); |
| 1213 | |
| 1214 | jam(buf, " for rt_kind '%s' using", |
| 1215 | enum_name(&routing_story, rt_kind)); |
| 1216 | |
| 1217 | jam(buf, " "); |
| 1218 | jam_selector(buf, &sr->this.client); |
| 1219 | jam(buf, "-%s->", protocol_by_ipproto(sr->this.protocol)->name); |
| 1220 | jam_selector(buf, &sr->that.client); |
| 1221 | |
| 1222 | jam(buf, " sec_label="); |
| 1223 | if (sr->this.sec_label.len > 0) { |
| 1224 | jam_sanitized_hunk(buf, sr->this.sec_label)({ typeof(sr->this.sec_label) hunk_ = (sr->this.sec_label ); jam_sanitized_bytes(buf, hunk_.ptr, hunk_.len); }); |
| 1225 | jam(buf, " (this)"); |
| 1226 | #if 0 |
| 1227 | } else if (c->config->sec_label.len > 0) { |
| 1228 | jam_sanitized_hunk(buf, c->config->sec_label)({ typeof(c->config->sec_label) hunk_ = (c->config-> sec_label); jam_sanitized_bytes(buf, hunk_.ptr, hunk_.len); } ); |
| 1229 | jam(buf, " (config)"); |
| 1230 | #endif |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | bool_Bool ok = kernel_ops->shunt_policy(op, c, sr, rt_kind, what, logger); |
| 1235 | dbg("kernel: %s() returned %s", __func__, bool_str(ok)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() returned %s", __func__, bool_str (ok)); } }; |
| 1236 | return ok; |
| 1237 | } |
| 1238 | |
| 1239 | static bool_Bool sag_eroute(const struct state *st, |
| 1240 | const struct spd_route *sr, |
| 1241 | enum kernel_policy_op op, |
| 1242 | const char *opname) |
| 1243 | { |
| 1244 | struct connection *c = st->st_connection; |
| 1245 | |
| 1246 | /* |
| 1247 | * Figure out the SPI and protocol (in two forms) for the |
| 1248 | * outer transformation. |
| 1249 | */ |
| 1250 | |
| 1251 | const struct kernel_encap encap = kernel_encap_from_state(st, sr); |
| 1252 | /* check for no transform at all */ |
| 1253 | passert(encap.outer >= 0)({ _Bool assertion__ = encap.outer >= 0; if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1253, }; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_passert(logger_, here, "%s", "encap.outer >= 0"); } (void) 1; }); |
| 1254 | |
| 1255 | uint32_t xfrm_if_id = c->xfrmi != NULL((void*)0) ? c->xfrmi->if_id : 0; |
| 1256 | |
| 1257 | pexpect((op & KERNEL_POLICY_DIR_MASK) == KERNEL_POLICY_DIR_OUT)({ _Bool assertion__ = (op & KERNEL_POLICY_DIR_MASK) == KERNEL_POLICY_DIR_OUT ; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 1257, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "(op & KERNEL_POLICY_DIR_MASK) == KERNEL_POLICY_DIR_OUT" ); } assertion__; }); |
| 1258 | struct kernel_route route = kernel_route_from_spd(sr, encap.mode, |
| 1259 | ENCAP_DIRECTION_OUTBOUND); |
| 1260 | |
| 1261 | /* hack */ |
| 1262 | char why[256]; |
| 1263 | snprintf(why, sizeof(why), "%s() %s", __func__, opname); |
| 1264 | |
| 1265 | return eroute_connection(op, why, sr, ntohl(SPI_IGNORE), ntohl(SPI_IGNORE), |
| 1266 | &route, encap.inner_proto->ipproto, &encap, |
| 1267 | calculate_sa_prio(c, false0), &c->sa_marks, |
| 1268 | xfrm_if_id, |
| 1269 | HUNK_AS_SHUNK(c->config->sec_label)({ typeof(c->config->sec_label) h_ = (c->config-> sec_label); shunk2(h_.ptr, h_.len); }), |
| 1270 | st->st_logger); |
| 1271 | } |
| 1272 | |
| 1273 | void migration_up(struct connection *c, struct state *st) |
| 1274 | { |
| 1275 | for (struct spd_route *sr = &c->spd; sr != NULL((void*)0); sr = sr->spd_next) { |
| 1276 | #ifdef IPSEC_CONNECTION_LIMIT |
| 1277 | num_ipsec_eroute++; |
| 1278 | #endif |
| 1279 | sr->routing = RT_ROUTED_TUNNEL; /* do now so route_owner won't find us */ |
| 1280 | do_command(c, sr, "up", st, st->st_logger); |
| 1281 | do_command(c, sr, "route", st, st->st_logger); |
| 1282 | } |
| 1283 | } |
| 1284 | |
| 1285 | void migration_down(struct connection *c, struct state *st) |
| 1286 | { |
| 1287 | for (struct spd_route *sr = &c->spd; sr != NULL((void*)0); sr = sr->spd_next) { |
| 1288 | enum routing_t cr = sr->routing; |
| 1289 | |
| 1290 | #ifdef IPSEC_CONNECTION_LIMIT |
| 1291 | if (erouted(cr)((cr) != RT_UNROUTED)) |
| 1292 | num_ipsec_eroute--; |
| 1293 | #endif |
| 1294 | |
| 1295 | sr->routing = RT_UNROUTED; /* do now so route_owner won't find us */ |
| 1296 | |
| 1297 | /* only unroute if no other connection shares it */ |
| 1298 | if (routed(cr)((cr) > RT_UNROUTED_HOLD) && route_owner(c, sr, NULL((void*)0), NULL((void*)0), NULL((void*)0)) == NULL((void*)0)) { |
| 1299 | do_command(c, sr, "down", st, st->st_logger); |
| 1300 | st->st_mobike_del_src_ip = true1; |
| 1301 | do_command(c, sr, "unroute", st, st->st_logger); |
| 1302 | st->st_mobike_del_src_ip = false0; |
| 1303 | } |
| 1304 | } |
| 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | /* |
| 1309 | * Delete any eroute for a connection and unroute it if route isn't |
| 1310 | * shared. |
| 1311 | */ |
| 1312 | void unroute_connection(struct connection *c) |
| 1313 | { |
| 1314 | for (struct spd_route *sr = &c->spd; sr != NULL((void*)0); sr = sr->spd_next) { |
| 1315 | enum routing_t cr = sr->routing; |
| 1316 | |
| 1317 | if (erouted(cr)((cr) != RT_UNROUTED)) { |
| 1318 | /* cannot handle a live one */ |
| 1319 | passert(cr != RT_ROUTED_TUNNEL)({ _Bool assertion__ = cr != RT_ROUTED_TUNNEL; if (!assertion__ ) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1319, }; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_passert(logger_, here, "%s", "cr != RT_ROUTED_TUNNEL") ; } (void) 1; }); |
| 1320 | shunt_policy(KP_DELETE_OUTBOUND, c, sr, RT_UNROUTED, |
| 1321 | "unrouting connection", |
| 1322 | c->logger); |
| 1323 | #ifdef IPSEC_CONNECTION_LIMIT |
| 1324 | num_ipsec_eroute--; |
| 1325 | #endif |
| 1326 | } |
| 1327 | |
| 1328 | sr->routing = RT_UNROUTED; /* do now so route_owner won't find us */ |
| 1329 | |
| 1330 | /* only unroute if no other connection shares it */ |
| 1331 | if (routed(cr)((cr) > RT_UNROUTED_HOLD) && route_owner(c, sr, NULL((void*)0), NULL((void*)0), NULL((void*)0)) == NULL((void*)0)) { |
| 1332 | do_command(c, sr, "unroute", NULL((void*)0), c->logger); |
| 1333 | } |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | #include "kernel_alg.h" |
| 1338 | |
| 1339 | /* find an entry in the bare_shunt table. |
| 1340 | * Trick: return a pointer to the pointer to the entry; |
| 1341 | * this allows the entry to be deleted. |
| 1342 | */ |
| 1343 | struct bare_shunt **bare_shunt_ptr(const ip_selector *our_client, |
| 1344 | const ip_selector *peer_client, |
| 1345 | int transport_proto, |
| 1346 | const char *why) |
| 1347 | |
| 1348 | { |
| 1349 | selectors_buf sb; |
| 1350 | dbg("kernel: %s looking for %s (%d)",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s looking for %s (%d)", why, str_selectors (our_client, peer_client, &sb), transport_proto); } } |
| 1351 | why, str_selectors(our_client, peer_client, &sb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s looking for %s (%d)", why, str_selectors (our_client, peer_client, &sb), transport_proto); } } |
| 1352 | transport_proto){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s looking for %s (%d)", why, str_selectors (our_client, peer_client, &sb), transport_proto); } }; |
| 1353 | #if 0 |
| 1354 | /* XXX: transport_proto is redundant */ |
| 1355 | pexpect(selector_protocol(our_client)->ipproto == (unsigned)transport_proto)({ _Bool assertion__ = selector_protocol(our_client)->ipproto == (unsigned)transport_proto; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1355, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect (logger_, here_, "%s", "selector_protocol(our_client)->ipproto == (unsigned)transport_proto" ); } assertion__; }); |
| 1356 | pexpect(selector_protocol(peer_client)->ipproto == (unsigned)transport_proto)({ _Bool assertion__ = selector_protocol(peer_client)->ipproto == (unsigned)transport_proto; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1356, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect (logger_, here_, "%s", "selector_protocol(peer_client)->ipproto == (unsigned)transport_proto" ); } assertion__; }); |
| 1357 | #endif |
| 1358 | for (struct bare_shunt **pp = &bare_shunts; *pp != NULL((void*)0); pp = &(*pp)->next) { |
| 1359 | struct bare_shunt *p = *pp; |
| 1360 | dbg_bare_shunt("comparing", p); |
| 1361 | if (transport_proto == p->transport_proto && |
| 1362 | selector_range_eq_selector_range(*our_client, p->our_client) && |
| 1363 | selector_range_eq_selector_range(*peer_client, p->peer_client)) { |
| 1364 | return pp; |
| 1365 | } |
| 1366 | } |
| 1367 | return NULL((void*)0); |
| 1368 | } |
| 1369 | |
| 1370 | /* free a bare_shunt entry, given a pointer to the pointer */ |
| 1371 | static void free_bare_shunt(struct bare_shunt **pp) |
| 1372 | { |
| 1373 | struct bare_shunt *p; |
| 1374 | |
| 1375 | passert(pp != NULL)({ _Bool assertion__ = pp != ((void*)0); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__ , .file = "programs/pluto/kernel.c", .line = 1375, }; &here ; }); const struct logger *logger_ = &failsafe_logger; llog_passert (logger_, here, "%s", "pp != ((void*)0)"); } (void) 1; }); |
| 1376 | |
| 1377 | p = *pp; |
| 1378 | |
| 1379 | *pp = p->next; |
| 1380 | dbg_bare_shunt("delete", p); |
| 1381 | pfree(p); |
| 1382 | } |
| 1383 | |
| 1384 | unsigned shunt_count(void) |
| 1385 | { |
| 1386 | unsigned i = 0; |
| 1387 | |
| 1388 | for (const struct bare_shunt *bs = bare_shunts; bs != NULL((void*)0); bs = bs->next) |
| 1389 | { |
| 1390 | i++; |
| 1391 | } |
| 1392 | |
| 1393 | return i; |
| 1394 | } |
| 1395 | |
| 1396 | void show_shunt_status(struct show *s) |
| 1397 | { |
| 1398 | show_separator(s); |
| 1399 | show_comment(s, "Bare Shunt list:"); |
| 1400 | show_separator(s); |
| 1401 | |
| 1402 | for (const struct bare_shunt *bs = bare_shunts; bs != NULL((void*)0); bs = bs->next) { |
| 1403 | /* Print interesting fields. Ignore count and last_active. */ |
| 1404 | selector_buf ourb; |
| 1405 | selector_buf peerb; |
| 1406 | said_buf sat; |
| 1407 | policy_prio_buf prio; |
| 1408 | |
| 1409 | show_comment(s, "%s -%d-> %s => %s %s %s", |
| 1410 | str_selector(&(bs)->our_client, &ourb), |
| 1411 | bs->transport_proto, |
| 1412 | str_selector(&(bs)->peer_client, &peerb), |
| 1413 | str_said(&(bs)->said, &sat), |
| 1414 | str_policy_prio(bs->policy_prio, &prio), |
| 1415 | bs->why); |
| 1416 | } |
| 1417 | } |
| 1418 | |
| 1419 | /* |
| 1420 | * Clear any bare shunt holds that overlap with the network we have |
| 1421 | * just routed. We only consider "narrow" holds: ones for a single |
| 1422 | * address to single address. |
| 1423 | */ |
| 1424 | static void clear_narrow_holds(const ip_selector *our_client, |
| 1425 | const ip_selector *peer_client, |
| 1426 | int transport_proto, |
| 1427 | struct logger *logger) |
| 1428 | { |
| 1429 | struct bare_shunt *p, **pp; |
| 1430 | |
| 1431 | for (pp = &bare_shunts; (p = *pp) != NULL((void*)0); ) { |
| 1432 | /* |
| 1433 | * is p->{local,remote} within {local,remote}. |
| 1434 | */ |
| 1435 | if (p->said.spi == htonl(SPI_HOLD) && |
| 1436 | transport_proto == p->transport_proto && |
| 1437 | selector_in_selector(p->our_client, *our_client) && |
| 1438 | selector_in_selector(p->peer_client, *peer_client)) { |
| 1439 | ip_address our_addr = selector_prefix(p->our_client); |
| 1440 | ip_address peer_addr = selector_prefix(p->peer_client); |
| 1441 | if (!delete_bare_shunt(&our_addr, &peer_addr, |
| 1442 | transport_proto, SPI_HOLD, |
| 1443 | /*skip_xfrm_policy_delete?*/false0, |
| 1444 | "clear_narrow_holds() removing clashing narrow hold", |
| 1445 | logger)) { |
| 1446 | /* ??? we could not delete a bare shunt */ |
| 1447 | llog_bare_shunt(RC_LOG, logger, p, "failed to delete"); |
| 1448 | break; /* unlikely to succeed a second time */ |
| 1449 | } else if (*pp == p) { |
| 1450 | /* |
| 1451 | * ??? We deleted the wrong bare shunt! |
| 1452 | * This happened because more than one entry |
| 1453 | * matched and we happened to delete a |
| 1454 | * different one. |
| 1455 | * Log it! And keep deleting. |
| 1456 | */ |
| 1457 | llog_bare_shunt(RC_LOG, logger, p, "UNEXPECTEDLY SURVIVING"); |
| 1458 | pp = &bare_shunts; /* just in case, start over */ |
| 1459 | } |
| 1460 | /* |
| 1461 | * ??? if we were sure that there could only be one |
| 1462 | * matching entry, we could break out of the FOR. |
| 1463 | * For an unknown reason this is not always the case, |
| 1464 | * so we will continue the loop, with pp unchanged. |
| 1465 | */ |
| 1466 | } else { |
| 1467 | pp = &p->next; |
| 1468 | } |
| 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | bool_Bool delete_bare_shunt(const ip_address *src_address, |
| 1473 | const ip_address *dst_address, |
| 1474 | int transport_proto, ipsec_spi_t cur_shunt_spi, |
| 1475 | bool_Bool skip_xfrm_policy_delete, |
| 1476 | const char *why, struct logger *logger) |
| 1477 | { |
| 1478 | const struct ip_info *afi = address_type(src_address); |
| 1479 | pexpect(afi == address_type(dst_address))({ _Bool assertion__ = afi == address_type(dst_address); if ( !assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1479, }; &here; }); const struct logger *logger_ = & failsafe_logger; llog_pexpect(logger_, here_, "%s", "afi == address_type(dst_address)" ); } assertion__; }); |
| 1480 | const ip_protocol *protocol = protocol_by_ipproto(transport_proto); |
| 1481 | /* port? assumed wide? */ |
| 1482 | ip_selector src = selector_from_address_protocol(*src_address, protocol); |
| 1483 | ip_selector dst = selector_from_address_protocol(*dst_address, protocol); |
| 1484 | |
| 1485 | bool_Bool ok; |
| 1486 | if (kernel_ops->type == USE_XFRM && skip_xfrm_policy_delete) { |
| 1487 | selectors_buf sb; |
| 1488 | llog(RC_LOG, logger, "deleting bare shunt %s from pluto shunt table", |
| 1489 | str_selectors_sensitive(&src, &dst, &sb)); |
| 1490 | ok = true1; /* always succeed */ |
| 1491 | } else { |
| 1492 | selectors_buf sb; |
| 1493 | dbg("kernel: deleting bare shunt %s from kernel for %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: deleting bare shunt %s from kernel for %s" , str_selectors(&src, &dst, &sb), why); } } |
| 1494 | str_selectors(&src, &dst, &sb), why){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: deleting bare shunt %s from kernel for %s" , str_selectors(&src, &dst, &sb), why); } }; |
| 1495 | const ip_address null_host = afi->address.any; |
| 1496 | /* assume low code logged action */ |
| 1497 | ok = raw_policy(KP_DELETE_OUTBOUND, |
| 1498 | &null_host, &src, &null_host, &dst, |
| 1499 | htonl(cur_shunt_spi), htonl(SPI_PASS), |
| 1500 | transport_proto, |
| 1501 | ET_INT, esp_transport_proto_info&esp_transport_kernel_encap, |
| 1502 | deltatime(SHUNT_PATIENCE((2 * 10) * 15 / 2)), |
| 1503 | 0, /* we don't know connection for priority yet */ |
| 1504 | NULL((void*)0), /* sa_marks */ |
| 1505 | 0 /* xfrm interface id */, |
| 1506 | null_shunk, logger, |
| 1507 | "%s() %s", __func__, why); |
| 1508 | if (!ok) { |
| 1509 | /* did/should kernel log this? */ |
| 1510 | selectors_buf sb; |
| 1511 | llog(RC_LOG, logger, |
| 1512 | "delete kernel shunt %s failed - deleting from pluto shunt table", |
| 1513 | str_selectors_sensitive(&src, &dst, &sb)); |
| 1514 | } |
| 1515 | } |
| 1516 | |
| 1517 | /* |
| 1518 | * We can have proto mismatching acquires with xfrm - this is |
| 1519 | * a bad workaround. |
| 1520 | * |
| 1521 | * ??? what is the nature of those mismatching acquires? |
| 1522 | * |
| 1523 | * XXX: for instance, when whack initiates an OE connection. |
| 1524 | * There is no kernel-acquire shunt to remove. |
| 1525 | */ |
| 1526 | |
| 1527 | struct bare_shunt **bs_pp = bare_shunt_ptr(&src, &dst, transport_proto, why); |
| 1528 | if (bs_pp == NULL((void*)0)) { |
| 1529 | selectors_buf sb; |
| 1530 | llog(RC_LOG, logger, |
| 1531 | "can't find expected bare shunt to delete: %s", |
| 1532 | str_selectors_sensitive(&src, &dst, &sb)); |
| 1533 | return ok; |
| 1534 | } |
| 1535 | |
| 1536 | free_bare_shunt(bs_pp); |
| 1537 | return ok; |
| 1538 | } |
| 1539 | |
| 1540 | bool_Bool install_se_connection_policies(struct connection *c, struct logger *logger) |
| 1541 | { |
| 1542 | connection_buf cb; |
| 1543 | dbg("kernel: %s() "PRI_CO" "PRI_CO" "PRI_CONNECTION" routed %s sec_label="PRI_SHUNK,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() ""$%u"" ""$%u"" ""\"%s\"%s"" routed %s sec_label=" "%.*s", __func__, ((c->serialno)), ((c->serial_from)), ( c)->name, str_connection_instance(c, &cb), enum_name(& routing_story, c->spd.routing), ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1544 | __func__, pri_co(c->serialno), pri_co(c->serial_from),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() ""$%u"" ""$%u"" ""\"%s\"%s"" routed %s sec_label=" "%.*s", __func__, ((c->serialno)), ((c->serial_from)), ( c)->name, str_connection_instance(c, &cb), enum_name(& routing_story, c->spd.routing), ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1545 | pri_connection(c, &cb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() ""$%u"" ""$%u"" ""\"%s\"%s"" routed %s sec_label=" "%.*s", __func__, ((c->serialno)), ((c->serial_from)), ( c)->name, str_connection_instance(c, &cb), enum_name(& routing_story, c->spd.routing), ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1546 | enum_name(&routing_story, c->spd.routing),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() ""$%u"" ""$%u"" ""\"%s\"%s"" routed %s sec_label=" "%.*s", __func__, ((c->serialno)), ((c->serial_from)), ( c)->name, str_connection_instance(c, &cb), enum_name(& routing_story, c->spd.routing), ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } } |
| 1547 | pri_shunk(c->config->sec_label)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() ""$%u"" ""$%u"" ""\"%s\"%s"" routed %s sec_label=" "%.*s", __func__, ((c->serialno)), ((c->serial_from)), ( c)->name, str_connection_instance(c, &cb), enum_name(& routing_story, c->spd.routing), ((int) (c->config->sec_label ).len), (const char *) ((c->config->sec_label).ptr)); } }; |
| 1548 | |
| 1549 | if (!pexpect(c->ike_version == IKEv2)({ _Bool assertion__ = c->ike_version == IKEv2; if (!assertion__ ) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1549, }; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_pexpect(logger_, here_, "%s", "c->ike_version == IKEv2" ); } assertion__; }) || |
| 1550 | !pexpect(c->config->sec_label.len > 0)({ _Bool assertion__ = c->config->sec_label.len > 0; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 1550, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "c->config->sec_label.len > 0" ); } assertion__; }) || |
| 1551 | !pexpect(c->kind == CK_TEMPLATE)({ _Bool assertion__ = c->kind == CK_TEMPLATE; if (!assertion__ ) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1551, }; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_pexpect(logger_, here_, "%s", "c->kind == CK_TEMPLATE" ); } assertion__; })) { |
| 1552 | return false0; |
| 1553 | } |
| 1554 | |
| 1555 | if (c->spd.routing != RT_UNROUTED) { |
| 1556 | dbg("kernel: %s() connection already routed", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() connection already routed", __func__ ); } }; |
| 1557 | return true1; |
| 1558 | } |
| 1559 | |
| 1560 | enum encap_mode mode = (c->policy & POLICY_TUNNEL((lset_t)1 << (POLICY_TUNNEL_IX))) ? ENCAP_MODE_TUNNEL : ENCAP_MODE_TRANSPORT; |
| 1561 | const struct kernel_encap encap = kernel_encap_from_spd(c->policy, &c->spd, mode); |
| 1562 | if (encap.outer < 0) { |
| 1563 | /* XXX: log? */ |
| 1564 | return false0; |
| 1565 | } |
| 1566 | |
| 1567 | uint32_t priority = calculate_sa_prio(c, /*oe_shunt*/false0); |
| 1568 | |
| 1569 | /* |
| 1570 | * SE installs both an outgoing and incoming policy. Normal |
| 1571 | * connections do not. |
| 1572 | */ |
| 1573 | for (unsigned i = 0; i < 2; i++) { |
| 1574 | bool_Bool inbound = (i == 1); |
| 1575 | struct end *src = inbound ? &c->spd.that : &c->spd.this; |
| 1576 | struct end *dst = inbound ? &c->spd.this : &c->spd.that; |
| 1577 | if (!raw_policy(inbound ? KP_ADD_INBOUND : KP_ADD_OUTBOUND, |
| 1578 | /*src*/&src->host_addr, &src->client, |
| 1579 | /*dst*/&dst->host_addr, &dst->client, |
| 1580 | /*ignored?old/new*/htonl(SPI_PASS), ntohl(SPI_PASS), |
| 1581 | /*transport_proto*/c->spd.this.protocol, |
| 1582 | /*esatype*/encap.inner_proto->ipproto, |
| 1583 | /*encap*/&encap, |
| 1584 | /*use_lifetime*/deltatime(0), |
| 1585 | /*sa_priority*/priority, |
| 1586 | /*sa_marks*/NULL((void*)0), |
| 1587 | /*xfrm_if_id*/0, |
| 1588 | /*sec_label*/HUNK_AS_SHUNK(c->config->sec_label)({ typeof(c->config->sec_label) h_ = (c->config-> sec_label); shunk2(h_.ptr, h_.len); }), |
| 1589 | /*logger*/logger, |
| 1590 | "%s() security label policy", __func__)) { |
| 1591 | if (inbound) { |
| 1592 | /* |
| 1593 | * Need to pull the just installed |
| 1594 | * outbound policy. |
| 1595 | * |
| 1596 | * XXX: this call highlights why |
| 1597 | * having both KP_*_REVERSED and and |
| 1598 | * reversed parameters is just so |
| 1599 | * lame. raw_policy can handle this. |
| 1600 | */ |
| 1601 | dbg("pulling previously installed outbound policy"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("pulling previously installed outbound policy" ); } }; |
| 1602 | pexpect(i > 0)({ _Bool assertion__ = i > 0; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1602, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect (logger_, here_, "%s", "i > 0"); } assertion__; }); |
| 1603 | raw_policy(KP_DELETE_OUTBOUND, |
| 1604 | /*src*/&c->spd.this.host_addr, &c->spd.this.client, |
| 1605 | /*dst*/&c->spd.that.host_addr, &c->spd.that.client, |
| 1606 | /*ignored?old/new*/htonl(SPI_PASS), ntohl(SPI_PASS), |
| 1607 | /*transport_proto*/c->spd.this.protocol, |
| 1608 | /*esatype*/encap.inner_proto->ipproto, |
| 1609 | /*encap*/&encap, |
| 1610 | /*use_lifetime*/deltatime(0), |
| 1611 | /*sa_priority*/priority, |
| 1612 | /*sa_marks*/NULL((void*)0), |
| 1613 | /*xfrm_if_id*/0, |
| 1614 | /*sec_label*/HUNK_AS_SHUNK(c->config->sec_label)({ typeof(c->config->sec_label) h_ = (c->config-> sec_label); shunk2(h_.ptr, h_.len); }), |
| 1615 | /*logger*/logger, |
| 1616 | "%s() security label policy", __func__); |
| 1617 | } |
| 1618 | return false0; |
| 1619 | } |
| 1620 | } |
| 1621 | |
| 1622 | /* a new route: no deletion required, but preparation is */ |
| 1623 | if (!do_command(c, &c->spd, "prepare", NULL((void*)0)/*ST*/, logger)) { |
| 1624 | dbg("kernel: %s() prepare command returned an error", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() prepare command returned an error" , __func__); } }; |
| 1625 | } |
| 1626 | |
| 1627 | if (!do_command(c, &c->spd, "route", NULL((void*)0)/*ST*/, logger)) { |
| 1628 | /* Failure! Unwind our work. */ |
| 1629 | dbg("kernel: %s() route command returned an error", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() route command returned an error" , __func__); } }; |
| 1630 | if (!do_command(c, &c->spd, "down", NULL((void*)0)/*st*/, logger)) { |
| 1631 | dbg("kernel: down command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: down command returned an error"); } }; |
| 1632 | } |
| 1633 | dbg("kernel: %s() pulling policies", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() pulling policies", __func__); } }; |
| 1634 | for (unsigned i = 0; i < 2; i++) { |
| 1635 | bool_Bool inbound = (i > 0); |
| 1636 | struct end *src = inbound ? &c->spd.that : &c->spd.this; |
| 1637 | struct end *dst = inbound ? &c->spd.this : &c->spd.that; |
| 1638 | /* ignore result */ |
| 1639 | raw_policy(inbound ? KP_DELETE_INBOUND : KP_DELETE_OUTBOUND, |
| 1640 | /*src*/&src->host_addr, &src->client, |
| 1641 | /*dst*/&dst->host_addr, &dst->client, |
| 1642 | /*ignored?old/new*/htonl(SPI_PASS), ntohl(SPI_PASS), |
| 1643 | /*transport_proto*/c->spd.this.protocol, |
| 1644 | /*esatype*/encap.inner_proto->ipproto, |
| 1645 | /*encap*/&encap, |
| 1646 | /*use_lifetime*/deltatime(0), |
| 1647 | /*sa_priority*/priority, |
| 1648 | /*sa_marks*/NULL((void*)0), |
| 1649 | /*xfrm_if_id*/0, |
| 1650 | /*sec_label*/HUNK_AS_SHUNK(c->config->sec_label)({ typeof(c->config->sec_label) h_ = (c->config-> sec_label); shunk2(h_.ptr, h_.len); }), |
| 1651 | /*logger*/logger, |
| 1652 | "%s() security label policy", __func__); |
| 1653 | } |
| 1654 | return false0; |
| 1655 | } |
| 1656 | |
| 1657 | /* Success! */ |
| 1658 | c->spd.routing = RT_ROUTED_PROSPECTIVE; |
| 1659 | return true1; |
| 1660 | } |
| 1661 | |
| 1662 | bool_Bool eroute_connection(enum kernel_policy_op op, const char *opname, |
| 1663 | const struct spd_route *sr, |
| 1664 | ipsec_spi_t cur_spi, |
| 1665 | ipsec_spi_t new_spi, |
| 1666 | const struct kernel_route *route, |
| 1667 | enum eroute_type esatype, |
| 1668 | const struct kernel_encap *encap, |
| 1669 | uint32_t sa_priority, |
| 1670 | const struct sa_marks *sa_marks, |
| 1671 | const uint32_t xfrm_if_id, |
| 1672 | shunk_t sec_label, |
| 1673 | struct logger *logger) |
| 1674 | { |
| 1675 | if (sr->this.has_cat) { |
| 1676 | ip_selector client = selector_from_address(sr->this.host_addr); |
| 1677 | bool_Bool t = raw_policy(op, |
| 1678 | &route->src.host_addr, &client, |
| 1679 | &route->dst.host_addr, &route->dst.client, |
| 1680 | cur_spi, |
| 1681 | new_spi, |
| 1682 | sr->this.protocol, |
| 1683 | esatype, |
| 1684 | encap, |
| 1685 | deltatime(0), |
| 1686 | sa_priority, sa_marks, |
| 1687 | xfrm_if_id, |
| 1688 | sec_label, |
| 1689 | logger, |
| 1690 | "CAT: %s() %s", __func__, opname); |
| 1691 | if (!t) { |
| 1692 | llog(RC_LOG, logger, |
| 1693 | "CAT: failed to eroute additional Client Address Translation policy"); |
| 1694 | } |
| 1695 | |
| 1696 | dbg("kernel: %s CAT extra route added return=%d", __func__, t){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s CAT extra route added return=%d", __func__ , t); } }; |
| 1697 | } |
| 1698 | |
| 1699 | return raw_policy(op, |
| 1700 | &route->src.host_addr, &route->src.client, |
| 1701 | &route->dst.host_addr, &route->dst.client, |
| 1702 | cur_spi, |
| 1703 | new_spi, |
| 1704 | sr->this.protocol, |
| 1705 | esatype, |
| 1706 | encap, |
| 1707 | deltatime(0), |
| 1708 | sa_priority, sa_marks, |
| 1709 | xfrm_if_id, |
| 1710 | sec_label, |
| 1711 | logger, |
| 1712 | "%s() %s", __func__, opname); |
| 1713 | } |
| 1714 | |
| 1715 | /* assign a bare hold or pass to a connection */ |
| 1716 | bool_Bool assign_holdpass(const struct connection *c, |
| 1717 | struct spd_route *sr, |
| 1718 | int transport_proto, ipsec_spi_t negotiation_shunt, |
| 1719 | const ip_address *src, const ip_address *dst) |
| 1720 | { |
| 1721 | /* |
| 1722 | * either the automatically installed %hold eroute is broad enough |
| 1723 | * or we try to add a broader one and delete the automatic one. |
| 1724 | * Beware: this %hold might be already handled, but still squeak |
| 1725 | * through because of a race. |
| 1726 | */ |
| 1727 | enum routing_t ro = sr->routing; /* routing, old */ |
| 1728 | enum routing_t rn = ro; /* routing, new */ |
| 1729 | |
| 1730 | passert(LHAS(LELEM(CK_PERMANENT) | LELEM(CK_INSTANCE), c->kind))({ _Bool assertion__ = (((((lset_t)1 << (CK_PERMANENT)) | ((lset_t)1 << (CK_INSTANCE))) & ((lset_t)1 << (c->kind))) != ((lset_t)0)); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1730, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert (logger_, here, "%s", "(((((lset_t)1 << (CK_PERMANENT)) | ((lset_t)1 << (CK_INSTANCE))) & ((lset_t)1 << (c->kind))) != ((lset_t)0))" ); } (void) 1; }); |
| 1731 | /* figure out what routing should become */ |
| 1732 | switch (ro) { |
| 1733 | case RT_UNROUTED: |
| 1734 | rn = RT_UNROUTED_HOLD; |
| 1735 | break; |
| 1736 | case RT_ROUTED_PROSPECTIVE: |
| 1737 | rn = RT_ROUTED_HOLD; |
| 1738 | break; |
| 1739 | default: |
| 1740 | /* no change: this %hold or %pass is old news */ |
| 1741 | break; |
| 1742 | } |
| 1743 | |
| 1744 | dbg("kernel: assign hold, routing was %s, needs to be %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign hold, routing was %s, needs to be %s" , enum_name(&routing_story, ro), enum_name(&routing_story , rn)); } } |
| 1745 | enum_name(&routing_story, ro),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign hold, routing was %s, needs to be %s" , enum_name(&routing_story, ro), enum_name(&routing_story , rn)); } } |
| 1746 | enum_name(&routing_story, rn)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign hold, routing was %s, needs to be %s" , enum_name(&routing_story, ro), enum_name(&routing_story , rn)); } }; |
| 1747 | |
| 1748 | if (eclipsable(sr)(selector_contains_one_address((sr)->this.client) && selector_contains_one_address((sr)->that.client))) { |
| 1749 | /* |
| 1750 | * Although %hold or %pass is appropriately broad, it will |
| 1751 | * no longer be bare so we must ditch it from the bare table |
| 1752 | */ |
| 1753 | struct bare_shunt **old = bare_shunt_ptr(&sr->this.client, &sr->that.client, |
| 1754 | sr->this.protocol, "assign_holdpass"); |
| 1755 | |
| 1756 | if (old == NULL((void*)0)) { |
| 1757 | /* ??? should this happen? It does. */ |
| 1758 | llog(RC_LOG, c->logger, |
| 1759 | "assign_holdpass() no bare shunt to remove? - mismatch?"); |
| 1760 | } else { |
| 1761 | /* ??? should this happen? */ |
| 1762 | dbg("kernel: assign_holdpass() removing bare shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign_holdpass() removing bare shunt" ); } }; |
| 1763 | free_bare_shunt(old); |
| 1764 | } |
| 1765 | } else { |
| 1766 | dbg("kernel: assign_holdpass() need broad(er) shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign_holdpass() need broad(er) shunt" ); } }; |
| 1767 | /* |
| 1768 | * we need a broad %hold, not the narrow one. |
| 1769 | * First we ensure that there is a broad %hold. |
| 1770 | * There may already be one (race condition): no need to |
| 1771 | * create one. |
| 1772 | * There may already be a %trap: replace it. |
| 1773 | * There may not be any broad eroute: add %hold. |
| 1774 | * Once the broad %hold is in place, delete the narrow one. |
| 1775 | */ |
| 1776 | if (rn != ro) { |
| 1777 | int op; |
| 1778 | const char *reason; |
| 1779 | |
| 1780 | if (erouted(ro)((ro) != RT_UNROUTED)) { |
| 1781 | op = KP_REPLACE_OUTBOUND; |
| 1782 | reason = "assign_holdpass() replace %trap with broad %pass or %hold"; |
| 1783 | } else { |
| 1784 | op = KP_ADD_OUTBOUND; |
| 1785 | reason = "assign_holdpass() add broad %pass or %hold"; |
| 1786 | } |
| 1787 | |
| 1788 | pexpect((op & KERNEL_POLICY_DIR_MASK) == KERNEL_POLICY_DIR_OUT)({ _Bool assertion__ = (op & KERNEL_POLICY_DIR_MASK) == KERNEL_POLICY_DIR_OUT ; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 1788, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "(op & KERNEL_POLICY_DIR_MASK) == KERNEL_POLICY_DIR_OUT" ); } assertion__; }); |
| 1789 | struct kernel_route route = kernel_route_from_spd(sr, |
| 1790 | ENCAP_MODE_TRANSPORT, |
| 1791 | ENCAP_DIRECTION_OUTBOUND); |
| 1792 | /* |
| 1793 | * XXX: why? |
| 1794 | * |
| 1795 | * Because only this end is interesting? |
| 1796 | * Because it is a shunt and the other end |
| 1797 | * doesn't matter? |
| 1798 | */ |
| 1799 | route.dst.host_addr = address_type(&route.dst.host_addr)->address.any; |
| 1800 | |
| 1801 | if (eroute_connection(op, reason, |
| 1802 | sr, |
| 1803 | htonl(SPI_HOLD), /* kernel induced */ |
| 1804 | htonl(negotiation_shunt), |
| 1805 | &route, ET_INT, |
| 1806 | esp_transport_proto_info&esp_transport_kernel_encap, |
| 1807 | calculate_sa_prio(c, false0), |
| 1808 | NULL((void*)0), 0 /* xfrm_if_id */, |
| 1809 | HUNK_AS_SHUNK(c->config->sec_label)({ typeof(c->config->sec_label) h_ = (c->config-> sec_label); shunk2(h_.ptr, h_.len); }), |
| 1810 | c->logger)) |
| 1811 | { |
| 1812 | dbg("kernel: assign_holdpass() eroute_connection() done"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign_holdpass() eroute_connection() done" ); } }; |
| 1813 | } else { |
| 1814 | llog(RC_LOG, c->logger, |
| 1815 | "assign_holdpass() eroute_connection() failed"); |
| 1816 | return false0; |
| 1817 | } |
| 1818 | } |
| 1819 | |
| 1820 | if (!delete_bare_shunt(src, dst, |
| 1821 | transport_proto, |
| 1822 | (c->policy & POLICY_NEGO_PASS((lset_t)1 << (POLICY_NEGO_PASS_IX))) ? SPI_PASS : SPI_HOLD, |
| 1823 | /*skip_xfrm_policy_delete?*/false0, |
| 1824 | ((c->policy & POLICY_NEGO_PASS((lset_t)1 << (POLICY_NEGO_PASS_IX))) ? "delete narrow %pass" : |
| 1825 | "assign_holdpass() delete narrow %hold"), |
| 1826 | c->logger)) { |
| 1827 | dbg("kernel: assign_holdpass() delete_bare_shunt() succeeded"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign_holdpass() delete_bare_shunt() succeeded" ); } }; |
| 1828 | } else { |
| 1829 | llog(RC_LOG, c->logger, |
| 1830 | "assign_holdpass() delete_bare_shunt() failed"); |
| 1831 | return false0; |
| 1832 | } |
| 1833 | } |
| 1834 | sr->routing = rn; |
| 1835 | dbg("kernel: assign_holdpass() done - returning success"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: assign_holdpass() done - returning success" ); } }; |
| 1836 | return true1; |
| 1837 | } |
| 1838 | |
| 1839 | /* compute a (host-order!) SPI to implement the policy in connection c */ |
| 1840 | enum policy_spi shunt_policy_spi(const struct connection *c, bool_Bool prospective) |
| 1841 | { |
| 1842 | if (prospective) { |
| 1843 | /* note: these are in host order :-( */ |
| 1844 | static const ipsec_spi_t shunt_spi[SHUNT_POLICY_ROOF] = { |
| 1845 | [SHUNT_DEFAULT] = SPI_TRAP, /* --initiateontraffic */ |
| 1846 | [SHUNT_PASS] = SPI_PASS, /* --pass */ |
| 1847 | [SHUNT_DROP] = SPI_DROP, /* --drop */ |
| 1848 | [SHUNT_REJECT] = SPI_REJECT, /* --reject */ |
| 1849 | }; |
| 1850 | enum shunt_policy sp = (c->policy & POLICY_SHUNT_MASK(((lset_t)1 << (POLICY_SHUNT1_IX)) - ((lset_t)1 << (POLICY_SHUNT0_IX)) + ((lset_t)1 << (POLICY_SHUNT1_IX) ))) >> POLICY_SHUNT_SHIFTPOLICY_SHUNT0_IX; |
| 1851 | passert(sp < elemsof(shunt_spi))({ _Bool assertion__ = sp < (sizeof(shunt_spi) / sizeof(*( shunt_spi))); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 1851, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "sp < (sizeof(shunt_spi) / sizeof(*(shunt_spi)))" ); } (void) 1; }); |
| 1852 | return shunt_spi[sp]; |
| 1853 | } else { |
| 1854 | /* note: these are in host order :-( */ |
| 1855 | static const ipsec_spi_t fail_spi[SHUNT_POLICY_ROOF] = { |
| 1856 | [SHUNT_DEFAULT] = 0, /* --none*/ |
| 1857 | [SHUNT_PASS] = SPI_PASS, /* --failpass */ |
| 1858 | [SHUNT_DROP] = SPI_DROP, /* --faildrop */ |
| 1859 | [SHUNT_REJECT] = SPI_REJECT, /* --failreject */ |
| 1860 | }; |
| 1861 | enum shunt_policy sp = (c->policy & POLICY_FAIL_MASK(((lset_t)1 << (POLICY_FAIL1_IX)) - ((lset_t)1 << (POLICY_FAIL0_IX)) + ((lset_t)1 << (POLICY_FAIL1_IX)))) >> POLICY_FAIL_SHIFTPOLICY_FAIL0_IX; |
| 1862 | passert(sp < elemsof(fail_spi))({ _Bool assertion__ = sp < (sizeof(fail_spi) / sizeof(*(fail_spi ))); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 1862, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "sp < (sizeof(fail_spi) / sizeof(*(fail_spi)))" ); } (void) 1; }); |
| 1863 | return fail_spi[sp]; |
| 1864 | } |
| 1865 | } |
| 1866 | |
| 1867 | bool_Bool del_spi(ipsec_spi_t spi, const struct ip_protocol *proto, |
| 1868 | const ip_address *src, const ip_address *dst, |
| 1869 | struct logger *logger) |
| 1870 | { |
| 1871 | said_buf sb; |
| 1872 | const char *text_said = said_str(*dst, proto, spi, &sb); |
| 1873 | |
| 1874 | address_buf b; |
| 1875 | dbg("kernel: deleting spi %s -> %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: deleting spi %s -> %s", str_address (src, &b), text_said); } } |
| 1876 | str_address(src, &b), text_said){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: deleting spi %s -> %s", str_address (src, &b), text_said); } }; |
| 1877 | |
| 1878 | struct kernel_sa sa = { |
| 1879 | .spi = spi, |
| 1880 | .proto = proto, |
| 1881 | .src.address = src, |
| 1882 | .dst.address = dst, |
| 1883 | .story = text_said, |
| 1884 | }; |
| 1885 | |
| 1886 | passert(kernel_ops->del_sa != NULL)({ _Bool assertion__ = kernel_ops->del_sa != ((void*)0); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 1886, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "kernel_ops->del_sa != ((void*)0)" ); } (void) 1; }); |
| 1887 | return kernel_ops->del_sa(&sa, logger); |
| 1888 | } |
| 1889 | |
| 1890 | static void setup_esp_nic_offload(struct kernel_sa *sa, struct connection *c, |
| 1891 | bool_Bool *nic_offload_fallback) |
| 1892 | { |
| 1893 | if (c->nic_offload == yna_no || |
| 1894 | c->interface == NULL((void*)0) || c->interface->ip_dev == NULL((void*)0) || |
| 1895 | c->interface->ip_dev->id_rname == NULL((void*)0)) { |
| 1896 | dbg("kernel: NIC esp-hw-offload disabled for connection '%s'", c->name){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: NIC esp-hw-offload disabled for connection '%s'" , c->name); } }; |
| 1897 | return; |
| 1898 | } |
| 1899 | |
| 1900 | if (c->nic_offload == yna_auto) { |
| 1901 | if (!c->interface->ip_dev->id_nic_offload) { |
| 1902 | dbg("kernel: NIC esp-hw-offload not for connection '%s' not available on interface %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: NIC esp-hw-offload not for connection '%s' not available on interface %s" , c->name, c->interface->ip_dev->id_rname); } } |
| 1903 | c->name, c->interface->ip_dev->id_rname){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: NIC esp-hw-offload not for connection '%s' not available on interface %s" , c->name, c->interface->ip_dev->id_rname); } }; |
| 1904 | return; |
| 1905 | } |
| 1906 | *nic_offload_fallback = true1; |
| 1907 | dbg("kernel: NIC esp-hw-offload offload for connection '%s' enabled on interface %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: NIC esp-hw-offload offload for connection '%s' enabled on interface %s" , c->name, c->interface->ip_dev->id_rname); } } |
| 1908 | c->name, c->interface->ip_dev->id_rname){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: NIC esp-hw-offload offload for connection '%s' enabled on interface %s" , c->name, c->interface->ip_dev->id_rname); } }; |
| 1909 | } |
| 1910 | sa->nic_offload_dev = c->interface->ip_dev->id_rname; |
| 1911 | } |
| 1912 | |
| 1913 | /* |
| 1914 | * Set up one direction of the SA bundle |
| 1915 | */ |
| 1916 | static bool_Bool setup_half_ipsec_sa(struct state *st, bool_Bool inbound) |
| 1917 | { |
| 1918 | /* Build an inbound or outbound SA */ |
| 1919 | |
| 1920 | struct connection *c = st->st_connection; |
| 1921 | bool_Bool replace = inbound && (kernel_ops->get_spi != NULL((void*)0)); |
| 1922 | bool_Bool outgoing_ref_set = false0; |
| 1923 | bool_Bool incoming_ref_set = false0; |
| 1924 | IPsecSAref_t ref_peer = st->st_ref_peer; |
| 1925 | IPsecSAref_t new_ref_peer = IPSEC_SAREF_NULL((IPsecSAref_t)0u); |
| 1926 | bool_Bool nic_offload_fallback = false0; |
| 1927 | |
| 1928 | /* SPIs, saved for spigrouping or undoing, if necessary */ |
| 1929 | struct kernel_sa said[EM_MAXRELSPIS4]; |
| 1930 | struct kernel_sa *said_next = said; |
| 1931 | |
| 1932 | /* same scope as said[] */ |
| 1933 | said_buf text_ipcomp; |
| 1934 | said_buf text_esp; |
| 1935 | said_buf text_ah; |
| 1936 | |
| 1937 | /* |
| 1938 | * Construct the policy encapsulation rules; it determines |
| 1939 | * tunnel mode as a side effect. |
| 1940 | */ |
| 1941 | struct kernel_encap encap = kernel_encap_from_state(st, &c->spd); |
| 1942 | if (!pexpect(encap.outer >= 0)({ _Bool assertion__ = encap.outer >= 0; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 1942, }; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_pexpect(logger_, here_, "%s", "encap.outer >= 0"); } assertion__; })) { |
| 1943 | return false0; |
| 1944 | } |
| 1945 | |
| 1946 | struct kernel_route route = kernel_route_from_spd(&c->spd, encap.mode, |
| 1947 | inbound ? ENCAP_DIRECTION_INBOUND : ENCAP_DIRECTION_OUTBOUND); |
| 1948 | |
| 1949 | const struct kernel_sa said_boilerplate = { |
| 1950 | .src.address = &route.src.host_addr, |
| 1951 | .dst.address = &route.dst.host_addr, |
| 1952 | .src.client = &route.src.client, |
| 1953 | .dst.client = &route.dst.client, |
| 1954 | .inbound = inbound, |
| 1955 | .tunnel = (encap.mode == ENCAP_MODE_TUNNEL), |
| 1956 | .transport_proto = c->spd.this.protocol, |
| 1957 | .sa_lifetime = c->sa_ipsec_life_seconds, |
| 1958 | .outif = -1, |
| 1959 | .sec_label = (st->st_v1_seen_sec_label.len > 0 ? st->st_v1_seen_sec_label : |
| 1960 | st->st_v1_acquired_sec_label.len > 0 ? st->st_v1_acquired_sec_label : |
| 1961 | c->spd.this.sec_label /* assume connection outlive their kernel_sa's */), |
| 1962 | }; |
| 1963 | |
| 1964 | address_buf sab, dab; |
| 1965 | selector_buf scb, dcb; |
| 1966 | dbg("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label="PRI_SHUNK"%s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1967 | __func__,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1968 | said_boilerplate.inbound ? "inbound" : "outbound",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1969 | str_selector(said_boilerplate.src.client, &scb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1970 | protocol_by_ipproto(said_boilerplate.transport_proto)->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1971 | str_address(said_boilerplate.src.address, &sab),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1972 | encap.inner_proto->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1973 | str_address(said_boilerplate.dst.address, &dab),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1974 | protocol_by_ipproto(said_boilerplate.transport_proto)->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1975 | str_selector(said_boilerplate.dst.client, &dcb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1976 | /* see above */{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1977 | pri_shunk(said_boilerplate.sec_label),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1978 | (st->st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" :{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1979 | st->st_v1_acquired_sec_label.len > 0 ? " (IKEv1 acquired)" :{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1980 | c->spd.this.sec_label.len > 0 ? " (IKEv2 this)" :{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1981 | "")){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() %s %s-%s->[%s=%s=>%s]-%s->%s sec_label=" "%.*s""%s", __func__, said_boilerplate.inbound ? "inbound" : "outbound" , str_selector(said_boilerplate.src.client, &scb), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_address(said_boilerplate .src.address, &sab), encap.inner_proto->name, str_address (said_boilerplate.dst.address, &dab), protocol_by_ipproto (said_boilerplate.transport_proto)->name, str_selector(said_boilerplate .dst.client, &dcb), ((int) (said_boilerplate.sec_label).len ), (const char *) ((said_boilerplate.sec_label).ptr), (st-> st_v1_seen_sec_label.len > 0 ? " (IKEv1 seen)" : st->st_v1_acquired_sec_label .len > 0 ? " (IKEv1 acquired)" : c->spd.this.sec_label. len > 0 ? " (IKEv2 this)" : "")); } } |
| 1982 | |
| 1983 | /* set up IPCOMP SA, if any */ |
| 1984 | |
| 1985 | if (st->st_ipcomp.present) { |
| 1986 | ipsec_spi_t ipcomp_spi = |
| 1987 | inbound ? st->st_ipcomp.our_spi : st->st_ipcomp.attrs.spi; |
| 1988 | *said_next = said_boilerplate; |
| 1989 | said_next->spi = ipcomp_spi; |
| 1990 | said_next->esatype = ET_IPCOMP; |
| 1991 | |
| 1992 | said_next->ipcomp_algo = st->st_ipcomp.attrs.transattrs.ta_comp; |
| 1993 | said_next->level = said_next - said; |
| 1994 | said_next->reqid = reqid_ipcomp(c->spd.reqid); |
| 1995 | said_next->story = said_str(route.dst.host_addr, &ip_protocol_compip_protocols[IPPROTO_COMP], |
| 1996 | ipcomp_spi, &text_ipcomp); |
| 1997 | |
| 1998 | if (inbound) { |
| 1999 | /* |
| 2000 | * set corresponding outbound SA. We can do this on |
| 2001 | * each SA in the bundle without harm. |
| 2002 | */ |
| 2003 | said_next->ref_peer = ref_peer; |
| 2004 | } else if (!outgoing_ref_set) { |
| 2005 | /* on outbound, pick up the SAref if not already done */ |
| 2006 | said_next->ref = ref_peer; |
| 2007 | outgoing_ref_set = true1; |
| 2008 | } |
| 2009 | |
| 2010 | if (!kernel_ops_add_sa(said_next, replace, st->st_logger)) { |
| 2011 | log_state(RC_LOG, st, "add_sa ipcomp failed"); |
| 2012 | goto fail; |
| 2013 | } |
| 2014 | |
| 2015 | /* |
| 2016 | * SA refs will have been allocated for this SA. |
| 2017 | * The inner most one is interesting for the outgoing SA, |
| 2018 | * since we refer to it in the policy that we instantiate. |
| 2019 | */ |
| 2020 | if (new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !inbound) { |
| 2021 | new_ref_peer = said_next->ref; |
| 2022 | if (kernel_ops->type != USE_XFRM && new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2023 | new_ref_peer = IPSEC_SAREF_NA((IPsecSAref_t)0xffff0001); |
| 2024 | } |
| 2025 | if (!incoming_ref_set && inbound) { |
| 2026 | st->st_ref = said_next->ref; |
| 2027 | incoming_ref_set = true1; |
| 2028 | } |
| 2029 | said_next++; |
| 2030 | } |
| 2031 | |
| 2032 | /* set up ESP SA, if any */ |
| 2033 | |
| 2034 | if (st->st_esp.present) { |
| 2035 | ipsec_spi_t esp_spi = |
| 2036 | inbound ? st->st_esp.our_spi : st->st_esp.attrs.spi; |
| 2037 | uint8_t *esp_dst_keymat = |
| 2038 | inbound ? st->st_esp.our_keymat : st->st_esp. |
| 2039 | peer_keymat; |
| 2040 | const struct trans_attrs *ta = &st->st_esp.attrs.transattrs; |
| 2041 | |
| 2042 | const struct ip_encap *encap_type = NULL((void*)0); |
| 2043 | uint16_t encap_sport = 0, encap_dport = 0; |
| 2044 | ip_address natt_oa; |
| 2045 | |
| 2046 | if (st->hidden_variables.st_nat_traversal & NAT_T_DETECTED( ((lset_t)1 << (NATED_HOST)) | ((lset_t)1 << (NATED_PEER )) ) || |
| 2047 | st->st_interface->protocol == &ip_protocol_tcpip_protocols[IPPROTO_TCP]) { |
| 2048 | encap_type = st->st_interface->protocol->encap_esp; |
| 2049 | if (inbound) { |
| 2050 | encap_sport = endpoint_hport(st->st_remote_endpoint); |
| 2051 | encap_dport = endpoint_hport(st->st_interface->local_endpoint); |
| 2052 | } else { |
| 2053 | encap_sport = endpoint_hport(st->st_interface->local_endpoint); |
| 2054 | encap_dport = endpoint_hport(st->st_remote_endpoint); |
| 2055 | } |
| 2056 | natt_oa = st->hidden_variables.st_nat_oa; |
| 2057 | dbg("kernel: natt/tcp sa encap_type="PRI_IP_ENCAP" sport=%d dport=%d",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: natt/tcp sa encap_type=""%u(%s)"" sport=%d dport=%d" , (encap_type) == ((void*)0) ? 0 : (encap_type)->encap_type , (encap_type) == ((void*)0) ? "none" : (encap_type)->name , encap_sport, encap_dport); } } |
| 2058 | pri_ip_encap(encap_type), encap_sport, encap_dport){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: natt/tcp sa encap_type=""%u(%s)"" sport=%d dport=%d" , (encap_type) == ((void*)0) ? 0 : (encap_type)->encap_type , (encap_type) == ((void*)0) ? "none" : (encap_type)->name , encap_sport, encap_dport); } }; |
| 2059 | } |
| 2060 | |
| 2061 | dbg("kernel: looking for alg with encrypt: %s keylen: %d integ: %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: looking for alg with encrypt: %s keylen: %d integ: %s" , ta->ta_encrypt->common.fqn, ta->enckeylen, ta-> ta_integ->common.fqn); } } |
| 2062 | ta->ta_encrypt->common.fqn, ta->enckeylen, ta->ta_integ->common.fqn){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: looking for alg with encrypt: %s keylen: %d integ: %s" , ta->ta_encrypt->common.fqn, ta->enckeylen, ta-> ta_integ->common.fqn); } }; |
| 2063 | |
| 2064 | /* |
| 2065 | * Check that both integrity and encryption are |
| 2066 | * supported by the kernel. |
| 2067 | * |
| 2068 | * Since the parser uses these exact same checks when |
| 2069 | * loading the connection, they should never fail (if |
| 2070 | * they do then strange things have been going on |
| 2071 | * since the connection was loaded). |
| 2072 | */ |
| 2073 | if (!kernel_alg_integ_ok(ta->ta_integ)) { |
| 2074 | log_state(RC_LOG_SERIOUS, st, |
| 2075 | "ESP integrity algorithm %s is not implemented or allowed", |
| 2076 | ta->ta_integ->common.fqn); |
| 2077 | goto fail; |
| 2078 | } |
| 2079 | if (!kernel_alg_encrypt_ok(ta->ta_encrypt)) { |
| 2080 | log_state(RC_LOG_SERIOUS, st, |
| 2081 | "ESP encryption algorithm %s is not implemented or allowed", |
| 2082 | ta->ta_encrypt->common.fqn); |
| 2083 | goto fail; |
| 2084 | } |
| 2085 | |
| 2086 | /* |
| 2087 | * Validate the encryption key size. |
| 2088 | */ |
| 2089 | size_t encrypt_keymat_size; |
| 2090 | if (!kernel_alg_encrypt_key_size(ta->ta_encrypt, ta->enckeylen, |
| 2091 | &encrypt_keymat_size)) { |
| 2092 | log_state(RC_LOG_SERIOUS, st, |
| 2093 | "ESP encryption algorithm %s with key length %d not implemented or allowed", |
| 2094 | ta->ta_encrypt->common.fqn, ta->enckeylen); |
| 2095 | goto fail; |
| 2096 | } |
| 2097 | |
| 2098 | /* Fixup key lengths for special cases */ |
| 2099 | #ifdef USE_3DES1 |
| 2100 | if (ta->ta_encrypt == &ike_alg_encrypt_3des_cbc) { |
| 2101 | /* Grrrrr.... f*cking 7 bits jurassic algos */ |
| 2102 | /* 168 bits in kernel, need 192 bits for keymat_len */ |
| 2103 | if (encrypt_keymat_size == 21) { |
| 2104 | dbg("kernel: %s requires a 7-bit jurassic adjust",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s requires a 7-bit jurassic adjust", ta->ta_encrypt->common.fqn); } } |
| 2105 | ta->ta_encrypt->common.fqn){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s requires a 7-bit jurassic adjust", ta->ta_encrypt->common.fqn); } }; |
| 2106 | encrypt_keymat_size = 24; |
| 2107 | } |
| 2108 | } |
| 2109 | #endif |
| 2110 | |
| 2111 | if (ta->ta_encrypt->salt_size > 0) { |
| 2112 | dbg("kernel: %s requires %zu salt bytes",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s requires %zu salt bytes", ta->ta_encrypt ->common.fqn, ta->ta_encrypt->salt_size); } } |
| 2113 | ta->ta_encrypt->common.fqn, ta->ta_encrypt->salt_size){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s requires %zu salt bytes", ta->ta_encrypt ->common.fqn, ta->ta_encrypt->salt_size); } }; |
| 2114 | encrypt_keymat_size += ta->ta_encrypt->salt_size; |
| 2115 | } |
| 2116 | |
| 2117 | size_t integ_keymat_size = ta->ta_integ->integ_keymat_size; /* BYTES */ |
| 2118 | |
| 2119 | dbg("kernel: st->st_esp.keymat_len=%" PRIu16 " is encrypt_keymat_size=%zu + integ_keymat_size=%zu",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: st->st_esp.keymat_len=%" "u" " is encrypt_keymat_size=%zu + integ_keymat_size=%zu" , st->st_esp.keymat_len, encrypt_keymat_size, integ_keymat_size ); } } |
| 2120 | st->st_esp.keymat_len, encrypt_keymat_size, integ_keymat_size){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: st->st_esp.keymat_len=%" "u" " is encrypt_keymat_size=%zu + integ_keymat_size=%zu" , st->st_esp.keymat_len, encrypt_keymat_size, integ_keymat_size ); } }; |
| 2121 | |
| 2122 | passert(st->st_esp.keymat_len == encrypt_keymat_size + integ_keymat_size)({ _Bool assertion__ = st->st_esp.keymat_len == encrypt_keymat_size + integ_keymat_size; if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2122, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "st->st_esp.keymat_len == encrypt_keymat_size + integ_keymat_size" ); } (void) 1; }); |
| 2123 | |
| 2124 | *said_next = said_boilerplate; |
| 2125 | said_next->spi = esp_spi; |
| 2126 | said_next->esatype = ET_ESP; |
| 2127 | said_next->replay_window = c->sa_replay_window; |
| 2128 | dbg("kernel: setting IPsec SA replay-window to %d", c->sa_replay_window){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: setting IPsec SA replay-window to %d" , c->sa_replay_window); } }; |
| 2129 | |
| 2130 | if (c->xfrmi != NULL((void*)0)) { |
| 2131 | said_next->xfrm_if_id = c->xfrmi->if_id; |
| 2132 | said_next->mark_set = c->sa_marks.out; |
| 2133 | } |
| 2134 | |
| 2135 | if (!inbound && c->sa_tfcpad != 0 && !st->st_seen_no_tfc) { |
| 2136 | dbg("kernel: Enabling TFC at %d bytes (up to PMTU)", c->sa_tfcpad){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: Enabling TFC at %d bytes (up to PMTU)" , c->sa_tfcpad); } }; |
| 2137 | said_next->tfcpad = c->sa_tfcpad; |
| 2138 | } |
| 2139 | |
| 2140 | if (c->policy & POLICY_DECAP_DSCP((lset_t)1 << (POLICY_DECAP_DSCP_IX))) { |
| 2141 | dbg("kernel: Enabling Decap ToS/DSCP bits"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: Enabling Decap ToS/DSCP bits"); } }; |
| 2142 | said_next->decap_dscp = true1; |
| 2143 | } |
| 2144 | if (c->policy & POLICY_NOPMTUDISC((lset_t)1 << (POLICY_NOPMTUDISC_IX))) { |
| 2145 | dbg("kernel: Disabling Path MTU Discovery"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: Disabling Path MTU Discovery"); } }; |
| 2146 | said_next->nopmtudisc = true1; |
| 2147 | } |
| 2148 | |
| 2149 | said_next->integ = ta->ta_integ; |
| 2150 | #ifdef USE_SHA21 |
| 2151 | if (said_next->integ == &ike_alg_integ_sha2_256 && |
| 2152 | LIN(POLICY_SHA2_TRUNCBUG, c->policy)(((((lset_t)1 << (POLICY_SHA2_TRUNCBUG_IX))) & (c-> policy)) == (((lset_t)1 << (POLICY_SHA2_TRUNCBUG_IX))))) { |
| 2153 | if (kernel_ops->sha2_truncbug_support) { |
| 2154 | if (libreswan_fipsmode() == 1) { |
| 2155 | log_state(RC_LOG_SERIOUS, st, |
| 2156 | "Error: sha2-truncbug=yes is not allowed in FIPS mode"); |
| 2157 | goto fail; |
| 2158 | } |
| 2159 | dbg("kernel: authalg converted for sha2 truncation at 96bits instead of IETF's mandated 128bits"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: authalg converted for sha2 truncation at 96bits instead of IETF's mandated 128bits" ); } }; |
| 2160 | /* |
| 2161 | * We need to tell the kernel to mangle |
| 2162 | * the sha2_256, as instructed by the user |
| 2163 | */ |
| 2164 | said_next->integ = &ike_alg_integ_hmac_sha2_256_truncbug; |
| 2165 | } else { |
| 2166 | log_state(RC_LOG_SERIOUS, st, |
| 2167 | "Error: %s stack does not support sha2_truncbug=yes", |
| 2168 | kernel_ops->kern_name); |
| 2169 | goto fail; |
| 2170 | } |
| 2171 | } |
| 2172 | #endif |
| 2173 | if (st->st_esp.attrs.transattrs.esn_enabled) { |
| 2174 | dbg("kernel: Enabling ESN"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: Enabling ESN"); } }; |
| 2175 | said_next->esn = true1; |
| 2176 | } |
| 2177 | |
| 2178 | /* |
| 2179 | * XXX: Assume SADB_ and ESP_ numbers match! Clearly |
| 2180 | * setting .compalg is wrong, don't yet trust |
| 2181 | * lower-level code to be right. |
| 2182 | */ |
| 2183 | said_next->encrypt = ta->ta_encrypt; |
| 2184 | |
| 2185 | /* divide up keying material */ |
| 2186 | said_next->enckey = esp_dst_keymat; |
| 2187 | said_next->enckeylen = encrypt_keymat_size; /* BYTES */ |
| 2188 | said_next->authkey = esp_dst_keymat + encrypt_keymat_size; |
| 2189 | said_next->authkeylen = integ_keymat_size; /* BYTES */ |
| 2190 | |
| 2191 | said_next->level = said_next - said; |
| 2192 | said_next->reqid = reqid_esp(c->spd.reqid); |
| 2193 | |
| 2194 | said_next->src.encap_port = encap_sport; |
| 2195 | said_next->dst.encap_port = encap_dport; |
| 2196 | said_next->encap_type = encap_type; |
| 2197 | said_next->natt_oa = &natt_oa; |
| 2198 | said_next->story = said_str(route.dst.host_addr, &ip_protocol_espip_protocols[IPPROTO_ESP], |
| 2199 | esp_spi, &text_esp); |
| 2200 | |
| 2201 | if (DBGP(DBG_PRIVATE)(cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX)))) || DBGP(DBG_CRYPT)(cur_debugging & (((lset_t)1 << (DBG_CRYPT_IX))))) { |
| 2202 | DBG_dump("ESP enckey:", said_next->enckey, |
| 2203 | said_next->enckeylen); |
| 2204 | DBG_dump("ESP authkey:", said_next->authkey, |
| 2205 | said_next->authkeylen); |
| 2206 | } |
| 2207 | |
| 2208 | if (inbound) { |
| 2209 | /* |
| 2210 | * set corresponding outbound SA. We can do this on |
| 2211 | * each SA in the bundle without harm. |
| 2212 | */ |
| 2213 | said_next->ref_peer = ref_peer; |
| 2214 | } else if (!outgoing_ref_set) { |
| 2215 | /* on outbound, pick up the SAref if not already done */ |
| 2216 | said_next->ref = ref_peer; |
| 2217 | outgoing_ref_set = true1; |
| 2218 | } |
| 2219 | setup_esp_nic_offload(said_next, c, &nic_offload_fallback); |
| 2220 | |
| 2221 | bool_Bool ret = kernel_ops_add_sa(said_next, replace, st->st_logger); |
| 2222 | |
| 2223 | if (!ret && nic_offload_fallback && |
| 2224 | said_next->nic_offload_dev != NULL((void*)0)) { |
| 2225 | /* Fallback to non-nic-offload crypto */ |
| 2226 | said_next->nic_offload_dev = NULL((void*)0); |
| 2227 | ret = kernel_ops_add_sa(said_next, replace, st->st_logger); |
| 2228 | } |
| 2229 | |
| 2230 | /* scrub keys from memory */ |
| 2231 | memset(said_next->enckey, 0, said_next->enckeylen); |
| 2232 | memset(said_next->authkey, 0, said_next->authkeylen); |
| 2233 | |
| 2234 | if (!ret) |
| 2235 | goto fail; |
| 2236 | |
| 2237 | /* |
| 2238 | * SA refs will have been allocated for this SA. |
| 2239 | * The inner most one is interesting for the outgoing SA, |
| 2240 | * since we refer to it in the policy that we instantiate. |
| 2241 | */ |
| 2242 | if (new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !inbound) { |
| 2243 | new_ref_peer = said_next->ref; |
| 2244 | if (kernel_ops->type != USE_XFRM && new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2245 | new_ref_peer = IPSEC_SAREF_NA((IPsecSAref_t)0xffff0001); |
| 2246 | } |
| 2247 | if (!incoming_ref_set && inbound) { |
| 2248 | st->st_ref = said_next->ref; |
| 2249 | incoming_ref_set = true1; |
| 2250 | } |
| 2251 | said_next++; |
| 2252 | } |
| 2253 | |
| 2254 | /* set up AH SA, if any */ |
| 2255 | |
| 2256 | if (st->st_ah.present) { |
| 2257 | ipsec_spi_t ah_spi = |
| 2258 | inbound ? st->st_ah.our_spi : st->st_ah.attrs.spi; |
| 2259 | uint8_t *ah_dst_keymat = |
| 2260 | inbound ? st->st_ah.our_keymat : st->st_ah.peer_keymat; |
| 2261 | |
| 2262 | const struct integ_desc *integ = st->st_ah.attrs.transattrs.ta_integ; |
| 2263 | size_t keymat_size = integ->integ_keymat_size; |
| 2264 | int authalg = integ->integ_ikev1_ah_transform; |
| 2265 | if (authalg <= 0) { |
| 2266 | log_state(RC_LOG_SERIOUS, st, |
| 2267 | "%s not implemented", |
| 2268 | integ->common.fqn); |
| 2269 | goto fail; |
| 2270 | } |
| 2271 | |
| 2272 | passert(st->st_ah.keymat_len == keymat_size)({ _Bool assertion__ = st->st_ah.keymat_len == keymat_size ; if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2272, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "st->st_ah.keymat_len == keymat_size" ); } (void) 1; }); |
| 2273 | |
| 2274 | *said_next = said_boilerplate; |
| 2275 | said_next->spi = ah_spi; |
| 2276 | said_next->esatype = ET_AH; |
| 2277 | said_next->integ = integ; |
| 2278 | said_next->authkeylen = st->st_ah.keymat_len; |
| 2279 | said_next->authkey = ah_dst_keymat; |
| 2280 | said_next->level = said_next - said; |
| 2281 | said_next->reqid = reqid_ah(c->spd.reqid); |
| 2282 | said_next->story = said_str(route.dst.host_addr, &ip_protocol_ahip_protocols[IPPROTO_AH], |
| 2283 | ah_spi, &text_ah); |
| 2284 | |
| 2285 | said_next->replay_window = c->sa_replay_window; |
| 2286 | dbg("kernel: setting IPsec SA replay-window to %d", c->sa_replay_window){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: setting IPsec SA replay-window to %d" , c->sa_replay_window); } }; |
| 2287 | |
| 2288 | if (st->st_ah.attrs.transattrs.esn_enabled) { |
| 2289 | dbg("kernel: Enabling ESN"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: Enabling ESN"); } }; |
| 2290 | said_next->esn = true1; |
| 2291 | } |
| 2292 | |
| 2293 | if (DBGP(DBG_PRIVATE)(cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX)))) || DBGP(DBG_CRYPT)(cur_debugging & (((lset_t)1 << (DBG_CRYPT_IX))))) { |
| 2294 | DBG_dump("AH authkey:", said_next->authkey, |
| 2295 | said_next->authkeylen); |
| 2296 | } |
| 2297 | |
| 2298 | if (inbound) { |
| 2299 | /* |
| 2300 | * set corresponding outbound SA. We can do this on |
| 2301 | * each SA in the bundle without harm. |
| 2302 | */ |
| 2303 | said_next->ref_peer = ref_peer; |
| 2304 | } else if (!outgoing_ref_set) { |
| 2305 | /* on outbound, pick up the SAref if not already done */ |
| 2306 | said_next->ref = ref_peer; |
| 2307 | outgoing_ref_set = true1; /* outgoing_ref_set not subsequently used */ |
Value stored to 'outgoing_ref_set' is never read | |
| 2308 | } |
| 2309 | |
| 2310 | if (!kernel_ops_add_sa(said_next, replace, st->st_logger)) { |
| 2311 | /* scrub key from memory */ |
| 2312 | memset(said_next->authkey, 0, said_next->authkeylen); |
| 2313 | goto fail; |
| 2314 | } |
| 2315 | /* scrub key from memory */ |
| 2316 | memset(said_next->authkey, 0, said_next->authkeylen); |
| 2317 | |
| 2318 | /* |
| 2319 | * SA refs will have been allocated for this SA. |
| 2320 | * The inner most one is interesting for the outgoing SA, |
| 2321 | * since we refer to it in the policy that we instantiate. |
| 2322 | */ |
| 2323 | if (new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !inbound) { |
| 2324 | new_ref_peer = said_next->ref; |
| 2325 | if (kernel_ops->type != USE_XFRM && new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2326 | new_ref_peer = IPSEC_SAREF_NA((IPsecSAref_t)0xffff0001); |
| 2327 | } |
| 2328 | if (!incoming_ref_set && inbound) { |
| 2329 | st->st_ref = said_next->ref; |
| 2330 | incoming_ref_set = true1; /* incoming_ref_set not subsequently used */ |
| 2331 | } |
| 2332 | said_next++; |
| 2333 | } |
| 2334 | |
| 2335 | /* |
| 2336 | * Add an inbound eroute to enforce an arrival check. |
| 2337 | * |
| 2338 | * If inbound, |
| 2339 | * ??? and some more mysterious conditions, |
| 2340 | * Note reversed ends. |
| 2341 | * Not much to be done on failure. |
| 2342 | */ |
| 2343 | dbg("kernel: %s() is thinking about installing inbound eroute? inbound=%d owner=#%lu %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() is thinking about installing inbound eroute? inbound=%d owner=#%lu %s" , __func__, inbound, c->spd.eroute_owner, ({ enum encap_mode e_ = encap.mode; (e_ == ENCAP_MODE_TUNNEL ? "tunnel" : e_ == ENCAP_MODE_TRANSPORT ? "transport" : "unknown"); })); } } |
| 2344 | __func__, inbound, c->spd.eroute_owner,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() is thinking about installing inbound eroute? inbound=%d owner=#%lu %s" , __func__, inbound, c->spd.eroute_owner, ({ enum encap_mode e_ = encap.mode; (e_ == ENCAP_MODE_TUNNEL ? "tunnel" : e_ == ENCAP_MODE_TRANSPORT ? "transport" : "unknown"); })); } } |
| 2345 | encap_mode_name(encap.mode)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() is thinking about installing inbound eroute? inbound=%d owner=#%lu %s" , __func__, inbound, c->spd.eroute_owner, ({ enum encap_mode e_ = encap.mode; (e_ == ENCAP_MODE_TUNNEL ? "tunnel" : e_ == ENCAP_MODE_TRANSPORT ? "transport" : "unknown"); })); } }; |
| 2346 | if (inbound && |
| 2347 | c->spd.eroute_owner == SOS_NOBODY0 && |
| 2348 | (c->config->sec_label.len == 0 || c->ike_version == IKEv1)) { |
| 2349 | dbg("kernel: %s() is installing inbound eroute", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() is installing inbound eroute", __func__ ); } }; |
| 2350 | uint32_t xfrm_if_id = c->xfrmi != NULL((void*)0) ? |
| 2351 | c->xfrmi->if_id : 0; |
| 2352 | |
| 2353 | /* |
| 2354 | * MCR - should be passed a spd_eroute structure here. |
| 2355 | * |
| 2356 | * Note: this and that are intentionally reversed |
| 2357 | * because the policy is inbound. |
| 2358 | * |
| 2359 | * XXX: yes, that is redundan - KP_ADD_INBOUND is |
| 2360 | * already indicating that the parameters are going to |
| 2361 | * need reversing ... |
| 2362 | */ |
| 2363 | if (!raw_policy(KP_ADD_INBOUND, |
| 2364 | &route.src.host_addr, /* src_host */ |
| 2365 | &route.src.client, /* src_client */ |
| 2366 | &route.dst.host_addr, /* dst_host */ |
| 2367 | &route.dst.client, /* dst_client */ |
| 2368 | /*old*/htonl(SPI_IGNORE), /*new*/htonl(SPI_IGNORE), |
| 2369 | c->spd.this.protocol, /* transport_proto */ |
| 2370 | encap.inner_proto->ipproto, /* esatype */ |
| 2371 | &encap, /* " */ |
| 2372 | deltatime(0), /* lifetime */ |
| 2373 | calculate_sa_prio(c, false0), /* priority */ |
| 2374 | &c->sa_marks, /* IPsec SA marks */ |
| 2375 | xfrm_if_id, |
| 2376 | HUNK_AS_SHUNK(c->config->sec_label)({ typeof(c->config->sec_label) h_ = (c->config-> sec_label); shunk2(h_.ptr, h_.len); }), |
| 2377 | st->st_logger, |
| 2378 | "%s() add inbound Child SA", __func__)) { |
| 2379 | llog(RC_LOG, st->st_logger, |
| 2380 | "raw_policy() in setup_half_ipsec_sa() failed to add inbound"); |
| 2381 | } |
| 2382 | } |
| 2383 | |
| 2384 | /* If there are multiple SPIs, group them. */ |
| 2385 | |
| 2386 | if (kernel_ops->grp_sa != NULL((void*)0) && said_next > &said[1]) { |
| 2387 | struct kernel_sa *s; |
| 2388 | |
| 2389 | /* |
| 2390 | * group SAs, two at a time, inner to outer (backwards in |
| 2391 | * said[]) |
| 2392 | * |
| 2393 | * The grouping is by pairs. So if said[] contains |
| 2394 | * ah esp ipip, |
| 2395 | * |
| 2396 | * the grouping would be ipip:esp, esp:ah. |
| 2397 | */ |
| 2398 | for (s = said; s < said_next - 1; s++) { |
| 2399 | dbg("kernel: grouping %s (ref=%u) and %s (ref=%u)",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: grouping %s (ref=%u) and %s (ref=%u)" , s[0].story, s[0].ref, s[1].story, s[1].ref); } } |
| 2400 | s[0].story, s[0].ref,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: grouping %s (ref=%u) and %s (ref=%u)" , s[0].story, s[0].ref, s[1].story, s[1].ref); } } |
| 2401 | s[1].story, s[1].ref){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: grouping %s (ref=%u) and %s (ref=%u)" , s[0].story, s[0].ref, s[1].story, s[1].ref); } }; |
| 2402 | if (!kernel_ops->grp_sa(s + 1, s)) { |
| 2403 | log_state(RC_LOG, st, "grp_sa failed"); |
| 2404 | goto fail; |
| 2405 | } |
| 2406 | } |
| 2407 | /* could update said, but it will not be used */ |
| 2408 | } |
| 2409 | |
| 2410 | if (new_ref_peer != IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2411 | st->st_ref_peer = new_ref_peer; |
| 2412 | |
| 2413 | /* if the impaired is set, pretend this fails */ |
| 2414 | if (impair.sa_creation) { |
| 2415 | DBG_log("Impair SA creation is set, pretending to fail"); |
| 2416 | goto fail; |
| 2417 | } |
| 2418 | return true1; |
| 2419 | |
| 2420 | fail: |
| 2421 | log_state(RC_LOG, st, "setup_half_ipsec_sa() hit fail:"); |
| 2422 | /* undo the done SPIs */ |
| 2423 | while (said_next-- != said) { |
| 2424 | if (said_next->proto != 0) { |
| 2425 | del_spi(said_next->spi, said_next->proto, |
| 2426 | said_next->src.address, said_next->dst.address, |
| 2427 | st->st_logger); |
| 2428 | } |
| 2429 | } |
| 2430 | return false0; |
| 2431 | } |
| 2432 | |
| 2433 | /* |
| 2434 | * XXX: Two cases: |
| 2435 | * |
| 2436 | * - the protocol was negotiated (and presumably installed) |
| 2437 | * (.present) |
| 2438 | * |
| 2439 | * - the protocol was proposed but never finished (.out_spi |
| 2440 | * inbound) |
| 2441 | */ |
| 2442 | |
| 2443 | struct dead_spi { /* XXX: this is ip_said+src */ |
| 2444 | const struct ip_protocol *protocol; |
| 2445 | ipsec_spi_t spi; |
| 2446 | ip_address src; |
| 2447 | ip_address dst; |
| 2448 | }; |
| 2449 | |
| 2450 | static unsigned append_teardown(struct dead_spi *dead, bool_Bool inbound, |
| 2451 | const struct ipsec_proto_info *proto, |
| 2452 | ip_address host_addr, ip_address effective_remote_address) |
| 2453 | { |
| 2454 | bool_Bool present = proto->present; |
| 2455 | if (!present && inbound && proto->our_spi != 0 && proto->attrs.spi == 0) { |
| 2456 | dbg("kernel: forcing inbound delete of %s as .our_spi: "PRI_IPSEC_SPI"; attrs.spi: "PRI_IPSEC_SPI,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: forcing inbound delete of %s as .our_spi: " "%08x""; attrs.spi: ""%08x", proto->protocol->name, htonl (proto->our_spi), htonl(proto->attrs.spi)); } } |
| 2457 | proto->protocol->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: forcing inbound delete of %s as .our_spi: " "%08x""; attrs.spi: ""%08x", proto->protocol->name, htonl (proto->our_spi), htonl(proto->attrs.spi)); } } |
| 2458 | pri_ipsec_spi(proto->our_spi),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: forcing inbound delete of %s as .our_spi: " "%08x""; attrs.spi: ""%08x", proto->protocol->name, htonl (proto->our_spi), htonl(proto->attrs.spi)); } } |
| 2459 | pri_ipsec_spi(proto->attrs.spi)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: forcing inbound delete of %s as .our_spi: " "%08x""; attrs.spi: ""%08x", proto->protocol->name, htonl (proto->our_spi), htonl(proto->attrs.spi)); } }; |
| 2460 | present = true1; |
| 2461 | } |
| 2462 | if (present) { |
| 2463 | dead->protocol = proto->protocol; |
| 2464 | if (inbound) { |
| 2465 | dead->spi = proto->our_spi; /* incoming */ |
| 2466 | dead->src = effective_remote_address; |
| 2467 | dead->dst = host_addr; |
| 2468 | } else { |
| 2469 | dead->spi = proto->attrs.spi; /* outgoing */ |
| 2470 | dead->src = host_addr; |
| 2471 | dead->dst = effective_remote_address; |
| 2472 | } |
| 2473 | return 1; |
| 2474 | } |
| 2475 | return 0; |
| 2476 | } |
| 2477 | |
| 2478 | static bool_Bool teardown_half_ipsec_sa(struct state *st, bool_Bool inbound) |
| 2479 | { |
| 2480 | /* Delete any AH, ESP, and IP in IP SPIs. */ |
| 2481 | |
| 2482 | struct connection *const c = st->st_connection; |
| 2483 | |
| 2484 | /* |
| 2485 | * If we have a new address in c->spd.that.host_addr, |
| 2486 | * we are the initiator, have been redirected, |
| 2487 | * and yet this routine must use the old address. |
| 2488 | * |
| 2489 | * We point effective_remote_host_address to the appropriate |
| 2490 | * address. |
| 2491 | */ |
| 2492 | |
| 2493 | ip_address effective_remote_address = c->spd.that.host_addr; |
| 2494 | if (!endpoint_address_eq_address(st->st_remote_endpoint, effective_remote_address) && |
| 2495 | address_is_specified(c->temp_vars.redirect_ip)) { |
| 2496 | effective_remote_address = endpoint_address(st->st_remote_endpoint); |
| 2497 | } |
| 2498 | |
| 2499 | /* ??? CLANG 3.5 thinks that c might be NULL */ |
| 2500 | if (inbound && c->spd.eroute_owner == SOS_NOBODY0 && |
| 2501 | !raw_policy(KP_DELETE_INBOUND, |
| 2502 | &effective_remote_address, |
| 2503 | &c->spd.that.client, |
| 2504 | &c->spd.this.host_addr, |
| 2505 | &c->spd.this.client, |
| 2506 | htonl(SPI_IGNORE), htonl(SPI_IGNORE), |
| 2507 | c->spd.this.protocol, |
| 2508 | c->ipsec_mode == ENCAPSULATION_MODE_TRANSPORT ? |
| 2509 | ET_ESP : ET_UNSPEC, |
| 2510 | esp_transport_proto_info&esp_transport_kernel_encap, |
| 2511 | deltatime(0), |
| 2512 | calculate_sa_prio(c, false0), |
| 2513 | &c->sa_marks, |
| 2514 | 0, /* xfrm_if_id. needed to tear down? */ |
| 2515 | /*sec_label:always-null*/null_shunk, |
| 2516 | st->st_logger, |
| 2517 | "%s() teardown inbound Child SA", __func__)) { |
| 2518 | llog(RC_LOG, st->st_logger, |
| 2519 | "raw_policy in teardown_half_ipsec_sa() failed to delete inbound"); |
| 2520 | } |
| 2521 | |
| 2522 | /* collect each proto SA that needs deleting */ |
| 2523 | |
| 2524 | struct dead_spi dead[3]; /* at most 3 entries */ |
| 2525 | unsigned nr = 0; |
| 2526 | nr += append_teardown(dead + nr, inbound, &st->st_ah, |
| 2527 | c->spd.this.host_addr, effective_remote_address); |
| 2528 | nr += append_teardown(dead + nr, inbound, &st->st_esp, |
| 2529 | c->spd.this.host_addr, effective_remote_address); |
| 2530 | nr += append_teardown(dead + nr, inbound, &st->st_ipcomp, |
| 2531 | c->spd.this.host_addr, effective_remote_address); |
| 2532 | passert(nr < elemsof(dead))({ _Bool assertion__ = nr < (sizeof(dead) / sizeof(*(dead) )); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2532, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "nr < (sizeof(dead) / sizeof(*(dead)))" ); } (void) 1; }); |
| 2533 | |
| 2534 | /* |
| 2535 | * If the SAs have been grouped, deleting any one will do: we |
| 2536 | * just delete the first one found. |
| 2537 | */ |
| 2538 | if (kernel_ops->grp_sa != NULL((void*)0) && nr > 1) { |
| 2539 | nr = 1; |
| 2540 | } |
| 2541 | |
| 2542 | /* delete each proto that needs deleting */ |
| 2543 | bool_Bool result = true1; |
| 2544 | |
| 2545 | for (unsigned i = 0; i < nr; i++) { |
| 2546 | const struct dead_spi *tbd = &dead[i]; |
| 2547 | result &= del_spi(tbd->spi, tbd->protocol, &tbd->src, &tbd->dst, st->st_logger); |
| 2548 | } |
| 2549 | |
| 2550 | return result; |
| 2551 | } |
| 2552 | |
| 2553 | static event_callback_routine kernel_process_msg_cb; |
| 2554 | |
| 2555 | static void kernel_process_msg_cb(evutil_socket_tint fd, |
| 2556 | const short event UNUSED__attribute__ ((unused)), |
| 2557 | void *arg) |
| 2558 | { |
| 2559 | struct logger logger[1] = { GLOBAL_LOGGER(null_fd)(struct logger) { .where = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 2559, }; &here; }), .global_whackfd = ((struct fd *) ( (void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec , }, }; /* event-handler */ |
| 2560 | const struct kernel_ops *kernel_ops = arg; |
| 2561 | |
| 2562 | dbg("kernel: %s process netlink message", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s process netlink message", __func__ ); } }; |
| 2563 | threadtime_t start = threadtime_start(); |
| 2564 | kernel_ops->process_msg(fd, logger); |
| 2565 | threadtime_stop(&start, SOS_NOBODY0, "kernel message"); |
| 2566 | } |
| 2567 | |
| 2568 | static global_timer_cb kernel_process_queue_cb; |
| 2569 | |
| 2570 | static void kernel_process_queue_cb(struct logger *unused_logger UNUSED__attribute__ ((unused))) |
| 2571 | { |
| 2572 | if (pexpect(kernel_ops->process_queue != NULL)({ _Bool assertion__ = kernel_ops->process_queue != ((void *)0); if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2572, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "kernel_ops->process_queue != ((void*)0)" ); } assertion__; })) { |
| 2573 | kernel_ops->process_queue(); |
| 2574 | } |
| 2575 | } |
| 2576 | |
| 2577 | const struct kernel_ops *kernel_ops = |
| 2578 | #ifdef XFRM_SUPPORT1 |
| 2579 | &xfrm_kernel_ops |
| 2580 | #endif |
| 2581 | #ifdef BSD_KAME |
| 2582 | &bsdkame_kernel_ops |
| 2583 | #endif |
| 2584 | ; |
| 2585 | |
| 2586 | deltatime_t bare_shunt_interval = DELTATIME_INIT(SHUNT_SCAN_INTERVAL){ .dt = { .tv_sec = ((2 * 10)), } }; |
| 2587 | |
| 2588 | void init_kernel(struct logger *logger) |
| 2589 | { |
| 2590 | struct utsname un; |
| 2591 | |
| 2592 | /* get kernel version */ |
| 2593 | uname(&un); |
| 2594 | llog(RC_LOG, logger, |
| 2595 | "using %s %s kernel support code on %s", |
| 2596 | un.sysname, kernel_ops->kern_name, un.version); |
| 2597 | |
| 2598 | passert(kernel_ops->init != NULL)({ _Bool assertion__ = kernel_ops->init != ((void*)0); if ( !assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 2598, }; &here; }); const struct logger *logger_ = & failsafe_logger; llog_passert(logger_, here, "%s", "kernel_ops->init != ((void*)0)" ); } (void) 1; }); |
| 2599 | kernel_ops->init(logger); |
| 2600 | |
| 2601 | /* Add the port bypass polcies */ |
| 2602 | |
| 2603 | if (kernel_ops->v6holes != NULL((void*)0)) { |
| 2604 | /* may not return */ |
| 2605 | kernel_ops->v6holes(logger); |
| 2606 | } |
| 2607 | |
| 2608 | /* register SA types that we can negotiate */ |
| 2609 | if (kernel_ops->pfkey_register != NULL((void*)0)) |
| 2610 | kernel_ops->pfkey_register(); |
| 2611 | |
| 2612 | enable_periodic_timer(EVENT_SHUNT_SCAN, kernel_scan_shunts, |
| 2613 | bare_shunt_interval); |
| 2614 | |
| 2615 | dbg("kernel: setup kernel fd callback"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: setup kernel fd callback"); } }; |
| 2616 | |
| 2617 | if (kernel_ops->async_fdp != NULL((void*)0)) |
| 2618 | /* Note: kernel_ops is const but pluto_event_add cannot know that */ |
| 2619 | add_fd_read_event_handler(*kernel_ops->async_fdp, kernel_process_msg_cb, |
| 2620 | (void *)kernel_ops, "KERNEL_XRM_FD"); |
| 2621 | |
| 2622 | if (kernel_ops->route_fdp != NULL((void*)0) && *kernel_ops->route_fdp > NULL_FD(-1)) { |
| 2623 | add_fd_read_event_handler(*kernel_ops->route_fdp, kernel_process_msg_cb, |
| 2624 | (void *)kernel_ops, "KERNEL_ROUTE_FD"); |
| 2625 | } |
| 2626 | |
| 2627 | if (kernel_ops->process_queue != NULL((void*)0)) { |
| 2628 | /* |
| 2629 | * AA_2015 this is untested code. only for non xfrm ??? |
| 2630 | * It seems in klips we should, besides kernel_process_msg, |
| 2631 | * call process_queue periodically. Does the order |
| 2632 | * matter? |
| 2633 | */ |
| 2634 | enable_periodic_timer(EVENT_PROCESS_KERNEL_QUEUE, |
| 2635 | kernel_process_queue_cb, |
| 2636 | deltatime(KERNEL_PROCESS_Q_PERIOD1)); |
| 2637 | } |
| 2638 | } |
| 2639 | |
| 2640 | void show_kernel_interface(struct show *s) |
| 2641 | { |
| 2642 | if (kernel_ops != NULL((void*)0)) { |
| 2643 | show_comment(s, "using kernel interface: %s", |
| 2644 | kernel_ops->kern_name); |
| 2645 | } |
| 2646 | } |
| 2647 | |
| 2648 | /* |
| 2649 | * see if the attached connection refers to an older state. |
| 2650 | * if it does, then initiate this state with the appropriate outgoing |
| 2651 | * references, such that we won't break any userland applications |
| 2652 | * that are using the conn with REFINFO. |
| 2653 | */ |
| 2654 | static void look_for_replacement_state(struct state *st) |
| 2655 | { |
| 2656 | struct connection *c = st->st_connection; |
| 2657 | struct state *ost = state_with_serialno(c->newest_ipsec_sa); |
| 2658 | |
| 2659 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 2660 | DBG_log("checking if this is a replacement state"); |
| 2661 | DBG_log(" st=%p ost=%p st->serialno=#%lu ost->serialno=#%lu", |
| 2662 | st, ost, st->st_serialno, |
| 2663 | ost == NULL((void*)0) ? 0 : ost->st_serialno); |
| 2664 | } |
| 2665 | |
| 2666 | if (ost != NULL((void*)0) && ost != st && ost->st_serialno != st->st_serialno) { |
| 2667 | /* |
| 2668 | * then there is an old state associated, and it is |
| 2669 | * different then the new one. |
| 2670 | */ |
| 2671 | dbg("kernel: keeping ref_peer=%" PRIu32 " during rekey", ost->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: keeping ref_peer=%" "u" " during rekey" , ost->st_ref_peer); } }; |
| 2672 | st->st_ref_peer = ost->st_ref_peer; |
| 2673 | } |
| 2674 | } |
| 2675 | |
| 2676 | /* |
| 2677 | * Note: install_inbound_ipsec_sa is only used by the Responder. |
| 2678 | * The Responder will subsequently use install_ipsec_sa for the outbound. |
| 2679 | * The Initiator uses install_ipsec_sa to install both at once. |
| 2680 | */ |
| 2681 | bool_Bool install_inbound_ipsec_sa(struct state *st) |
| 2682 | { |
| 2683 | struct connection *const c = st->st_connection; |
| 2684 | |
| 2685 | /* |
| 2686 | * If our peer has a fixed-address client, check if we already |
| 2687 | * have a route for that client that conflicts. We will take this |
| 2688 | * as proof that that route and the connections using it are |
| 2689 | * obsolete and should be eliminated. Interestingly, this is |
| 2690 | * the only case in which we can tell that a connection is obsolete. |
| 2691 | */ |
| 2692 | passert(c->kind == CK_PERMANENT || c->kind == CK_INSTANCE)({ _Bool assertion__ = c->kind == CK_PERMANENT || c->kind == CK_INSTANCE; if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2692, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "c->kind == CK_PERMANENT || c->kind == CK_INSTANCE" ); } (void) 1; }); |
| 2693 | if (c->spd.that.has_client) { |
| 2694 | for (;; ) { |
| 2695 | struct spd_route *esr; /* value is ignored */ |
| 2696 | struct connection *o = route_owner(c, &c->spd, &esr, |
| 2697 | NULL((void*)0), NULL((void*)0)); |
| 2698 | |
| 2699 | if (o == NULL((void*)0) || c == o) |
| 2700 | break; /* nobody interesting has a route */ |
| 2701 | |
| 2702 | /* note: we ignore the client addresses at this end */ |
| 2703 | if (sameaddr(&o->spd.that.host_addr, |
| 2704 | &c->spd.that.host_addr) && |
| 2705 | o->interface == c->interface) |
| 2706 | break; /* existing route is compatible */ |
| 2707 | |
| 2708 | if (kernel_ops->overlap_supported) { |
| 2709 | /* |
| 2710 | * Both are transport mode, allow overlapping. |
| 2711 | * [bart] not sure if this is actually |
| 2712 | * intended, but am leaving it in to make it |
| 2713 | * behave like before |
| 2714 | */ |
| 2715 | if (!LIN(POLICY_TUNNEL, c->policy | o->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy | o->policy)) == (((lset_t)1 << (POLICY_TUNNEL_IX)) ))) |
| 2716 | break; |
| 2717 | |
| 2718 | /* Both declared that overlapping is OK. */ |
| 2719 | if (LIN(POLICY_OVERLAPIP, c->policy & o->policy)(((((lset_t)1 << (POLICY_OVERLAPIP_IX))) & (c->policy & o->policy)) == (((lset_t)1 << (POLICY_OVERLAPIP_IX ))))) |
| 2720 | break; |
| 2721 | } |
| 2722 | |
| 2723 | address_buf b; |
| 2724 | connection_buf cib; |
| 2725 | log_state(RC_LOG_SERIOUS, st, |
| 2726 | "route to peer's client conflicts with "PRI_CONNECTION"\"%s\"%s"" %s; releasing old connection to free the route", |
| 2727 | pri_connection(o, &cib)(o)->name, str_connection_instance(o, &cib), |
| 2728 | str_address_sensitive(&o->spd.that.host_addr, &b)); |
| 2729 | if (o->kind == CK_INSTANCE) { |
| 2730 | delete_connection(&o, /*relations?*/false0); |
| 2731 | } else { |
| 2732 | release_connection(o, /*relations?*/false0); |
| 2733 | } |
| 2734 | } |
| 2735 | } |
| 2736 | |
| 2737 | dbg("kernel: install_inbound_ipsec_sa() checking if we can route"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: install_inbound_ipsec_sa() checking if we can route" ); } }; |
| 2738 | /* check that we will be able to route and eroute */ |
| 2739 | switch (could_route(c, st->st_logger)) { |
| 2740 | case route_easy: |
| 2741 | case route_nearconflict: |
| 2742 | dbg("kernel: routing is easy, or has resolvable near-conflict"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: routing is easy, or has resolvable near-conflict" ); } }; |
| 2743 | break; |
| 2744 | |
| 2745 | case route_unnecessary: |
| 2746 | /* |
| 2747 | * in this situation, we should look and see if there is |
| 2748 | * a state that our connection references, that we are |
| 2749 | * in fact replacing. |
| 2750 | */ |
| 2751 | break; |
| 2752 | |
| 2753 | default: |
| 2754 | return false0; |
| 2755 | } |
| 2756 | |
| 2757 | look_for_replacement_state(st); |
| 2758 | |
| 2759 | /* |
| 2760 | * we now have to set up the outgoing SA first, so that |
| 2761 | * we can refer to it in the incoming SA. |
| 2762 | */ |
| 2763 | if (st->st_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !st->st_outbound_done) { |
| 2764 | dbg("kernel: installing outgoing SA now as ref_peer=%u", st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: installing outgoing SA now as ref_peer=%u" , st->st_ref_peer); } }; |
| 2765 | if (!setup_half_ipsec_sa(st, false0)) { |
| 2766 | DBG_log("failed to install outgoing SA: %u", |
| 2767 | st->st_ref_peer); |
| 2768 | return false0; |
| 2769 | } |
| 2770 | |
| 2771 | st->st_outbound_done = true1; |
| 2772 | } |
| 2773 | dbg("kernel: outgoing SA has ref_peer=%u", st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: outgoing SA has ref_peer=%u", st-> st_ref_peer); } }; |
| 2774 | |
| 2775 | /* (attempt to) actually set up the SAs */ |
| 2776 | |
| 2777 | return setup_half_ipsec_sa(st, true1); |
| 2778 | } |
| 2779 | |
| 2780 | /* Install a route and then a prospective shunt eroute or an SA group eroute. |
| 2781 | * Assumption: could_route gave a go-ahead. |
| 2782 | * Any SA Group must have already been created. |
| 2783 | * On failure, steps will be unwound. |
| 2784 | */ |
| 2785 | bool_Bool route_and_eroute(struct connection *c, |
| 2786 | struct spd_route *sr, |
| 2787 | struct state *st/*can be NULL*/, |
| 2788 | struct logger *logger/*st or c */) |
| 2789 | { |
| 2790 | selectors_buf sb; |
| 2791 | dbg("kernel: route_and_eroute() for %s; proto %d, and source port %d dest port %d sec_label",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute() for %s; proto %d, and source port %d dest port %d sec_label" , str_selectors(&sr->this.client, &sr->that.client , &sb), sr->this.protocol, sr->this.port, sr->that .port); } } |
| 2792 | str_selectors(&sr->this.client, &sr->that.client, &sb),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute() for %s; proto %d, and source port %d dest port %d sec_label" , str_selectors(&sr->this.client, &sr->that.client , &sb), sr->this.protocol, sr->this.port, sr->that .port); } } |
| 2793 | sr->this.protocol, sr->this.port, sr->that.port){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute() for %s; proto %d, and source port %d dest port %d sec_label" , str_selectors(&sr->this.client, &sr->that.client , &sb), sr->this.protocol, sr->this.port, sr->that .port); } }; |
| 2794 | #if 0 |
| 2795 | /* XXX: apparently not so */ |
| 2796 | pexpect(sr->this.client.addr.ipproto == sr->this.protocol)({ _Bool assertion__ = sr->this.client.addr.ipproto == sr-> this.protocol; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2796, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "sr->this.client.addr.ipproto == sr->this.protocol" ); } assertion__; }); |
| 2797 | pexpect(sr->that.client.addr.ipproto == sr->that.protocol)({ _Bool assertion__ = sr->that.client.addr.ipproto == sr-> that.protocol; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2797, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "sr->that.client.addr.ipproto == sr->that.protocol" ); } assertion__; }); |
| 2798 | pexpect(sr->this.client.addr.hport == sr->this.port)({ _Bool assertion__ = sr->this.client.addr.hport == sr-> this.port; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2798, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "sr->this.client.addr.hport == sr->this.port" ); } assertion__; }); |
| 2799 | pexpect(sr->that.client.addr.hport == sr->that.port)({ _Bool assertion__ = sr->that.client.addr.hport == sr-> that.port; if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2799, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "sr->that.client.addr.hport == sr->that.port" ); } assertion__; }); |
| 2800 | #endif |
| 2801 | |
| 2802 | /* XXX: ... so make it so */ |
| 2803 | update_selector_hport(&sr->this.client, sr->this.port){ (&sr->this.client)->hport = (sr->this.port); }; |
| 2804 | update_selector_hport(&sr->that.client, sr->that.port){ (&sr->that.client)->hport = (sr->that.port); }; |
| 2805 | #if 0 |
| 2806 | sr->this.client.addr.ipproto = sr->this.protocol; |
| 2807 | sr->that.client.addr.ipproto = sr->that.protocol; |
| 2808 | #endif |
| 2809 | |
| 2810 | struct spd_route *esr, *rosr; |
| 2811 | struct connection *ero; |
| 2812 | struct connection *ro = route_owner(c, sr, &rosr, &ero, &esr); /* who, if anyone, owns our eroute? */ |
| 2813 | |
| 2814 | dbg("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2815 | c->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2816 | (c->policy_next ? c->policy_next->name : "none"),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2817 | ero == NULL ? "null" : ero->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2818 | esr,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2819 | ro == NULL ? "null" : ro->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2820 | rosr,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } } |
| 2821 | st == NULL ? 0 : st->st_serialno){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute with c: %s (next: %s) ero:%s esr:{%p} ro:%s rosr:{%p} and state: #%lu" , c->name, (c->policy_next ? c->policy_next->name : "none"), ero == ((void*)0) ? "null" : ero->name, esr, ro == ((void*)0) ? "null" : ro->name, rosr, st == ((void*)0) ? 0 : st->st_serialno); } }; |
| 2822 | |
| 2823 | /* look along the chain of policies for same one */ |
| 2824 | |
| 2825 | /* we should look for dest port as well? */ |
| 2826 | /* ports are now switched to the ones in this.client / that.client ??????? */ |
| 2827 | /* but port set is sr->this.port and sr.that.port ! */ |
| 2828 | struct bare_shunt **bspp = ((ero == NULL((void*)0)) ? bare_shunt_ptr(&sr->this.client, |
| 2829 | &sr->that.client, |
| 2830 | sr->this.protocol, |
| 2831 | "route and eroute") : |
| 2832 | NULL((void*)0)); |
| 2833 | |
| 2834 | /* install the eroute */ |
| 2835 | |
| 2836 | bool_Bool eroute_installed = false0; |
| 2837 | |
| 2838 | #ifdef IPSEC_CONNECTION_LIMIT |
| 2839 | bool_Bool new_eroute = false0; |
| 2840 | #endif |
| 2841 | |
| 2842 | passert(bspp == NULL || ero == NULL)({ _Bool assertion__ = bspp == ((void*)0) || ero == ((void*)0 ); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2842, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "bspp == ((void*)0) || ero == ((void*)0)" ); } (void) 1; }); /* only one non-NULL */ |
| 2843 | |
| 2844 | if (bspp != NULL((void*)0) || ero != NULL((void*)0)) { |
| 2845 | dbg("kernel: we are replacing an eroute"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: we are replacing an eroute"); } }; |
| 2846 | /* if no state provided, then install a shunt for later */ |
| 2847 | if (st == NULL((void*)0)) { |
| 2848 | eroute_installed = shunt_policy(KP_REPLACE_OUTBOUND, c, sr, |
| 2849 | RT_ROUTED_PROSPECTIVE, |
| 2850 | "route_and_eroute() replace shunt", |
| 2851 | logger); |
| 2852 | } else { |
| 2853 | eroute_installed = sag_eroute(st, sr, KP_REPLACE_OUTBOUND, |
| 2854 | "route_and_eroute() replace sag"); |
| 2855 | } |
| 2856 | |
| 2857 | /* remember to free bspp if we make it out of here alive */ |
| 2858 | } else { |
| 2859 | /* we're adding an eroute */ |
| 2860 | #ifdef IPSEC_CONNECTION_LIMIT |
| 2861 | if (num_ipsec_eroute == IPSEC_CONNECTION_LIMIT) { |
| 2862 | llog(RC_LOG_SERIOUS, logger, |
| 2863 | "Maximum number of IPsec connections reached (%d)", |
| 2864 | IPSEC_CONNECTION_LIMIT); |
| 2865 | return false0; |
| 2866 | } |
| 2867 | new_eroute = true1; |
| 2868 | #endif |
| 2869 | |
| 2870 | /* if no state provided, then install a shunt for later */ |
| 2871 | if (st == NULL((void*)0)) { |
| 2872 | eroute_installed = shunt_policy(KP_ADD_OUTBOUND, c, sr, |
| 2873 | RT_ROUTED_PROSPECTIVE, |
| 2874 | "route_and_eroute() add", |
| 2875 | logger); |
| 2876 | } else { |
| 2877 | eroute_installed = sag_eroute(st, sr, KP_ADD_OUTBOUND, "add"); |
| 2878 | } |
| 2879 | } |
| 2880 | |
| 2881 | /* notify the firewall of a new tunnel */ |
| 2882 | |
| 2883 | bool_Bool firewall_notified = false0; |
| 2884 | |
| 2885 | if (eroute_installed) { |
| 2886 | /* |
| 2887 | * do we have to notify the firewall? |
| 2888 | * Yes, if we are installing |
| 2889 | * a tunnel eroute and the firewall wasn't notified |
| 2890 | * for a previous tunnel with the same clients. Any Previous |
| 2891 | * tunnel would have to be for our connection, so the actual |
| 2892 | * test is simple. |
| 2893 | */ |
| 2894 | firewall_notified = st == NULL((void*)0) || /* not a tunnel eroute */ |
| 2895 | sr->eroute_owner != SOS_NOBODY0 || /* already notified */ |
| 2896 | do_command(c, sr, "up", st, logger); /* go ahead and notify */ |
| 2897 | } |
| 2898 | |
| 2899 | /* install the route */ |
| 2900 | |
| 2901 | bool_Bool route_installed = false0; |
| 2902 | |
| 2903 | dbg("kernel: route_and_eroute: firewall_notified: %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: firewall_notified: %s" , firewall_notified ? "true" : "false"); } } |
| 2904 | firewall_notified ? "true" : "false"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: firewall_notified: %s" , firewall_notified ? "true" : "false"); } }; |
| 2905 | if (!firewall_notified) { |
| 2906 | /* we're in trouble -- don't do routing */ |
| 2907 | } else if (ro == NULL((void*)0)) { |
| 2908 | /* a new route: no deletion required, but preparation is */ |
| 2909 | if (!do_command(c, sr, "prepare", st, logger)) |
| 2910 | dbg("kernel: prepare command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: prepare command returned an error"); } }; |
| 2911 | route_installed = do_command(c, sr, "route", st, logger); |
| 2912 | if (!route_installed) |
| 2913 | dbg("kernel: route command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route command returned an error"); } }; |
| 2914 | } else if (routed(sr->routing)((sr->routing) > RT_UNROUTED_HOLD) || |
| 2915 | routes_agree(ro, c)((ro)->interface->ip_dev == (c)->interface->ip_dev && sameaddr(&(ro)->spd.this.host_nexthop, & (c)->spd.this.host_nexthop))) { |
| 2916 | route_installed = true1; /* nothing to be done */ |
| 2917 | } else { |
| 2918 | /* |
| 2919 | * Some other connection must own the route |
| 2920 | * and the route must disagree. But since could_route |
| 2921 | * must have allowed our stealing it, we'll do so. |
| 2922 | * |
| 2923 | * A feature of LINUX allows us to install the new route |
| 2924 | * before deleting the old if the nexthops differ. |
| 2925 | * This reduces the "window of vulnerability" when packets |
| 2926 | * might flow in the clear. |
| 2927 | */ |
| 2928 | if (sameaddr(&sr->this.host_nexthop, |
| 2929 | &esr->this.host_nexthop)) { |
| 2930 | if (!do_command(ro, sr, "unroute", st, logger)) { |
| 2931 | dbg("kernel: unroute command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: unroute command returned an error"); } }; |
| 2932 | } |
| 2933 | route_installed = do_command(c, sr, "route", st, logger); |
| 2934 | if (!route_installed) |
| 2935 | dbg("kernel: route command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route command returned an error"); } }; |
| 2936 | } else { |
| 2937 | route_installed = do_command(c, sr, "route", st, logger); |
| 2938 | if (!route_installed) |
| 2939 | dbg("kernel: route command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route command returned an error"); } }; |
| 2940 | |
| 2941 | if (!do_command(ro, sr, "unroute", st, logger)) { |
| 2942 | dbg("kernel: unroute command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: unroute command returned an error"); } }; |
| 2943 | } |
| 2944 | } |
| 2945 | |
| 2946 | /* record unrouting */ |
| 2947 | if (route_installed) { |
| 2948 | do { |
| 2949 | dbg("kernel: installed route: ro name=%s, rosr->routing=%d", ro->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: installed route: ro name=%s, rosr->routing=%d" , ro->name, rosr->routing); } } |
| 2950 | rosr->routing){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: installed route: ro name=%s, rosr->routing=%d" , ro->name, rosr->routing); } }; |
| 2951 | pexpect(!erouted(rosr->routing))({ _Bool assertion__ = !((rosr->routing) != RT_UNROUTED); if (!assertion__) { where_t here_ = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 2951, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect(logger_, here_, "%s", "!((rosr->routing) != RT_UNROUTED)" ); } assertion__; }); /* warn for now - requires fixing */ |
| 2952 | rosr->routing = RT_UNROUTED; |
| 2953 | |
| 2954 | /* no need to keep old value */ |
| 2955 | ro = route_owner(c, sr, &rosr, NULL((void*)0), NULL((void*)0)); |
| 2956 | } while (ro != NULL((void*)0)); |
| 2957 | } |
| 2958 | } |
| 2959 | |
| 2960 | /* all done -- clean up */ |
| 2961 | if (route_installed) { |
| 2962 | /* Success! */ |
| 2963 | |
| 2964 | if (bspp != NULL((void*)0)) { |
| 2965 | free_bare_shunt(bspp); |
| 2966 | } else if (ero != NULL((void*)0) && ero != c) { |
| 2967 | /* check if ero is an ancestor of c. */ |
| 2968 | struct connection *ero2; |
| 2969 | |
| 2970 | for (ero2 = c; ero2 != NULL((void*)0) && ero2 != c; |
| 2971 | ero2 = ero2->policy_next) |
| 2972 | ; |
| 2973 | |
| 2974 | if (ero2 == NULL((void*)0)) { |
| 2975 | /* |
| 2976 | * By elimination, we must be eclipsing ero. |
| 2977 | * Checked above. |
| 2978 | */ |
| 2979 | if (ero->spd.routing != RT_ROUTED_ECLIPSED) { |
| 2980 | ero->spd.routing = RT_ROUTED_ECLIPSED; |
| 2981 | eclipse_count++; |
| 2982 | } |
| 2983 | } |
| 2984 | } |
| 2985 | |
| 2986 | if (st == NULL((void*)0)) { |
| 2987 | passert(sr->eroute_owner == SOS_NOBODY)({ _Bool assertion__ = sr->eroute_owner == 0; if (!assertion__ ) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 2987, }; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_passert(logger_, here, "%s", "sr->eroute_owner == 0" ); } (void) 1; }); |
| 2988 | sr->routing = RT_ROUTED_PROSPECTIVE; |
| 2989 | } else { |
| 2990 | sr->routing = RT_ROUTED_TUNNEL; |
| 2991 | connection_buf cib; |
| 2992 | dbg("kernel: route_and_eroute: instance "PRI_CONNECTION", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: instance ""\"%s\"%s" ", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)" , (st->st_connection)->name, str_connection_instance(st ->st_connection, &cib), &st->st_connection-> spd, sr, st->st_serialno, sr->eroute_owner, st->st_connection ->newest_ipsec_sa); } } |
| 2993 | pri_connection(st->st_connection, &cib),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: instance ""\"%s\"%s" ", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)" , (st->st_connection)->name, str_connection_instance(st ->st_connection, &cib), &st->st_connection-> spd, sr, st->st_serialno, sr->eroute_owner, st->st_connection ->newest_ipsec_sa); } } |
| 2994 | &st->st_connection->spd, sr,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: instance ""\"%s\"%s" ", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)" , (st->st_connection)->name, str_connection_instance(st ->st_connection, &cib), &st->st_connection-> spd, sr, st->st_serialno, sr->eroute_owner, st->st_connection ->newest_ipsec_sa); } } |
| 2995 | st->st_serialno,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: instance ""\"%s\"%s" ", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)" , (st->st_connection)->name, str_connection_instance(st ->st_connection, &cib), &st->st_connection-> spd, sr, st->st_serialno, sr->eroute_owner, st->st_connection ->newest_ipsec_sa); } } |
| 2996 | sr->eroute_owner,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: instance ""\"%s\"%s" ", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)" , (st->st_connection)->name, str_connection_instance(st ->st_connection, &cib), &st->st_connection-> spd, sr, st->st_serialno, sr->eroute_owner, st->st_connection ->newest_ipsec_sa); } } |
| 2997 | st->st_connection->newest_ipsec_sa){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: route_and_eroute: instance ""\"%s\"%s" ", setting eroute_owner {spd=%p,sr=%p} to #%lu (was #%lu) (newest_ipsec_sa=#%lu)" , (st->st_connection)->name, str_connection_instance(st ->st_connection, &cib), &st->st_connection-> spd, sr, st->st_serialno, sr->eroute_owner, st->st_connection ->newest_ipsec_sa); } }; |
| 2998 | sr->eroute_owner = st->st_serialno; |
| 2999 | /* clear host shunts that clash with freshly installed route */ |
| 3000 | clear_narrow_holds(&sr->this.client, &sr->that.client, |
| 3001 | sr->this.protocol, logger); |
| 3002 | } |
| 3003 | |
| 3004 | #ifdef IPSEC_CONNECTION_LIMIT |
| 3005 | if (new_eroute) { |
| 3006 | num_ipsec_eroute++; |
| 3007 | llog(RC_COMMENT, logger, |
| 3008 | "%d IPsec connections are currently being managed", |
| 3009 | num_ipsec_eroute); |
| 3010 | } |
| 3011 | #endif |
| 3012 | |
| 3013 | return true1; |
| 3014 | } else { |
| 3015 | /* Failure! Unwind our work. */ |
| 3016 | if (firewall_notified && sr->eroute_owner == SOS_NOBODY0) { |
| 3017 | if (!do_command(c, sr, "down", st, logger)) |
| 3018 | dbg("kernel: down command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: down command returned an error"); } }; |
| 3019 | } |
| 3020 | |
| 3021 | if (eroute_installed) { |
| 3022 | /* |
| 3023 | * Restore original eroute, if we can. |
| 3024 | * Since there is nothing much to be done if |
| 3025 | * the restoration fails, ignore success or failure. |
| 3026 | */ |
| 3027 | if (bspp != NULL((void*)0)) { |
| 3028 | /* |
| 3029 | * Restore old bare_shunt. |
| 3030 | * I don't think that this case is very likely. |
| 3031 | * Normally a bare shunt would have been |
| 3032 | * assigned to a connection before we've |
| 3033 | * gotten this far. |
| 3034 | */ |
| 3035 | struct bare_shunt *bs = *bspp; |
| 3036 | |
| 3037 | ip_address dst = said_address(bs->said); |
| 3038 | if (!raw_policy(KP_REPLACE_OUTBOUND, |
| 3039 | &dst, /* should be useless */ |
| 3040 | &bs->our_client, |
| 3041 | &dst, /* should be useless */ |
| 3042 | &bs->peer_client, |
| 3043 | bs->said.spi, /* unused? network order */ |
| 3044 | bs->said.spi, /* network order */ |
| 3045 | sr->this.protocol, /* transport_proto */ |
| 3046 | ET_INT, |
| 3047 | esp_transport_proto_info&esp_transport_kernel_encap, |
| 3048 | deltatime(SHUNT_PATIENCE((2 * 10) * 15 / 2)), |
| 3049 | calculate_sa_prio(c, false0), |
| 3050 | NULL((void*)0), |
| 3051 | 0, |
| 3052 | /* bare shunt are not associated with any connection so no security label */ |
| 3053 | null_shunk, logger, |
| 3054 | "%s() restore", __func__)) { |
| 3055 | llog(RC_LOG, logger, |
| 3056 | "raw_policy() in route_and_eroute() failed to restore/replace SA"); |
| 3057 | } |
| 3058 | } else if (ero != NULL((void*)0)) { |
| 3059 | passert(esr != NULL)({ _Bool assertion__ = esr != ((void*)0); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 3059, } ; &here; }); const struct logger *logger_ = &failsafe_logger ; llog_passert(logger_, here, "%s", "esr != ((void*)0)"); } ( void) 1; }); |
| 3060 | /* restore ero's former glory */ |
| 3061 | if (esr->eroute_owner == SOS_NOBODY0) { |
| 3062 | /* note: normal or eclipse case */ |
| 3063 | if (!shunt_policy(KP_REPLACE_OUTBOUND, |
| 3064 | ero, esr, esr->routing, |
| 3065 | "route_and_eroute() restore", |
| 3066 | logger)) { |
| 3067 | llog(RC_LOG, logger, |
| 3068 | "shunt_policy() in route_and_eroute() failed restore/replace"); |
| 3069 | } |
| 3070 | } else { |
| 3071 | /* |
| 3072 | * Try to find state that owned eroute. |
| 3073 | * Don't do anything if it cannot be |
| 3074 | * found. |
| 3075 | * This case isn't likely since we |
| 3076 | * don't run the updown script when |
| 3077 | * replacing a SA group with its |
| 3078 | * successor (for the same conn). |
| 3079 | */ |
| 3080 | struct state *ost = |
| 3081 | state_with_serialno( |
| 3082 | esr->eroute_owner); |
| 3083 | |
| 3084 | if (ost != NULL((void*)0)) { |
| 3085 | if (!sag_eroute(ost, esr, |
| 3086 | KP_REPLACE_OUTBOUND, |
| 3087 | "restore")) |
| 3088 | llog(RC_LOG, logger, |
| 3089 | "sag_eroute() in route_and_eroute() failed restore/replace"); |
| 3090 | } |
| 3091 | } |
| 3092 | } else { |
| 3093 | /* there was no previous eroute: delete whatever we installed */ |
| 3094 | if (st == NULL((void*)0)) { |
| 3095 | if (!shunt_policy(KP_DELETE_OUTBOUND, c, sr, |
| 3096 | sr->routing, |
| 3097 | "route_and_eroute() delete", |
| 3098 | logger)) { |
| 3099 | llog(RC_LOG, logger, |
| 3100 | "shunt_policy() in route_and_eroute() failed in !st case"); |
| 3101 | } |
| 3102 | } else { |
| 3103 | if (!sag_eroute(st, sr, |
| 3104 | KP_DELETE_OUTBOUND, |
| 3105 | "delete")) { |
| 3106 | llog(RC_LOG, logger, |
| 3107 | "sag_eroute() in route_and_eroute() failed in st case for delete"); |
| 3108 | } |
| 3109 | } |
| 3110 | } |
| 3111 | } |
| 3112 | |
| 3113 | return false0; |
| 3114 | } |
| 3115 | } |
| 3116 | |
| 3117 | bool_Bool install_ipsec_sa(struct state *st, bool_Bool inbound_also) |
| 3118 | { |
| 3119 | dbg("kernel: install_ipsec_sa() for #%lu: %s", st->st_serialno,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: install_ipsec_sa() for #%lu: %s", st-> st_serialno, inbound_also ? "inbound and outbound" : "outbound only" ); } } |
| 3120 | inbound_also ? "inbound and outbound" : "outbound only"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: install_ipsec_sa() for #%lu: %s", st-> st_serialno, inbound_also ? "inbound and outbound" : "outbound only" ); } }; |
| 3121 | |
| 3122 | enum routability rb = could_route(st->st_connection, st->st_logger); |
| 3123 | |
| 3124 | switch (rb) { |
| 3125 | case route_easy: |
| 3126 | case route_unnecessary: |
| 3127 | case route_nearconflict: |
| 3128 | break; |
| 3129 | |
| 3130 | default: |
| 3131 | return false0; |
| 3132 | } |
| 3133 | |
| 3134 | /* (attempt to) actually set up the SA group */ |
| 3135 | |
| 3136 | /* setup outgoing SA if we haven't already */ |
| 3137 | if (!st->st_outbound_done) { |
| 3138 | if (!setup_half_ipsec_sa(st, false0)) { |
| 3139 | return false0; |
| 3140 | } |
| 3141 | |
| 3142 | dbg("kernel: set up outgoing SA, ref=%u/%u", st->st_ref,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: set up outgoing SA, ref=%u/%u", st-> st_ref, st->st_ref_peer); } } |
| 3143 | st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: set up outgoing SA, ref=%u/%u", st-> st_ref, st->st_ref_peer); } }; |
| 3144 | st->st_outbound_done = true1; |
| 3145 | } |
| 3146 | |
| 3147 | /* now setup inbound SA */ |
| 3148 | if (st->st_ref == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && inbound_also) { |
| 3149 | if (!setup_half_ipsec_sa(st, true1)) |
| 3150 | return false0; |
| 3151 | |
| 3152 | dbg("kernel: set up incoming SA, ref=%u/%u", st->st_ref,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: set up incoming SA, ref=%u/%u", st-> st_ref, st->st_ref_peer); } } |
| 3153 | st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: set up incoming SA, ref=%u/%u", st-> st_ref, st->st_ref_peer); } }; |
| 3154 | |
| 3155 | /* |
| 3156 | * We successfully installed an IPsec SA, meaning it is safe |
| 3157 | * to clear our revival back-off delay. This is based on the |
| 3158 | * assumption that an unwilling partner might complete an IKE |
| 3159 | * SA to us, but won't complete an IPsec SA to us. |
| 3160 | */ |
| 3161 | st->st_connection->temp_vars.revive_delay = 0; |
| 3162 | } |
| 3163 | |
| 3164 | if (rb == route_unnecessary) |
| 3165 | return true1; |
| 3166 | |
| 3167 | struct spd_route *sr = &st->st_connection->spd; |
| 3168 | |
| 3169 | if (st->st_connection->remotepeertype == CISCO && sr->spd_next != NULL((void*)0)) |
| 3170 | sr = sr->spd_next; |
| 3171 | |
| 3172 | /* for (sr = &st->st_connection->spd; sr != NULL; sr = sr->next) */ |
| 3173 | struct connection *c = st->st_connection; |
| 3174 | if (c->ike_version == IKEv2 && c->spd.this.sec_label.len > 0) { |
| 3175 | dbg("kernel: %s() skipping route_and_eroute(st) as security label", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: %s() skipping route_and_eroute(st) as security label" , __func__); } }; |
| 3176 | } else { |
| 3177 | for (; sr != NULL((void*)0); sr = sr->spd_next) { |
| 3178 | dbg("kernel: sr for #%lu: %s", st->st_serialno,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: sr for #%lu: %s", st->st_serialno, enum_name(&routing_story, sr->routing)); } } |
| 3179 | enum_name(&routing_story, sr->routing)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: sr for #%lu: %s", st->st_serialno, enum_name(&routing_story, sr->routing)); } }; |
| 3180 | |
| 3181 | /* |
| 3182 | * if the eroute owner is not us, then make it |
| 3183 | * us. See test co-terminal-02, |
| 3184 | * pluto-rekey-01, pluto-unit-02/oppo-twice |
| 3185 | */ |
| 3186 | pexpect(sr->eroute_owner == SOS_NOBODY ||({ _Bool assertion__ = sr->eroute_owner == 0 || sr->routing >= RT_ROUTED_TUNNEL; if (!assertion__) { where_t here_ = ( { static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 3187, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect( logger_, here_, "%s", "sr->eroute_owner == 0 || sr->routing >= RT_ROUTED_TUNNEL" ); } assertion__; }) |
| 3187 | sr->routing >= RT_ROUTED_TUNNEL)({ _Bool assertion__ = sr->eroute_owner == 0 || sr->routing >= RT_ROUTED_TUNNEL; if (!assertion__) { where_t here_ = ( { static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 3187, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_pexpect( logger_, here_, "%s", "sr->eroute_owner == 0 || sr->routing >= RT_ROUTED_TUNNEL" ); } assertion__; }); |
| 3188 | |
| 3189 | if (sr->eroute_owner != st->st_serialno && |
| 3190 | sr->routing != RT_UNROUTED_KEYED) { |
| 3191 | if (!route_and_eroute(st->st_connection, sr, st, st->st_logger)) { |
| 3192 | delete_ipsec_sa(st); |
| 3193 | /* |
| 3194 | * XXX go and unroute any SRs that were |
| 3195 | * successfully routed already. |
| 3196 | */ |
| 3197 | return false0; |
| 3198 | } |
| 3199 | } |
| 3200 | } |
| 3201 | } |
| 3202 | |
| 3203 | /* XXX why is this needed? Skip the bogus original conn? */ |
| 3204 | if (st->st_connection->remotepeertype == CISCO) { |
| 3205 | struct spd_route *srcisco = st->st_connection->spd.spd_next; |
| 3206 | |
| 3207 | if (srcisco != NULL((void*)0)) { |
| 3208 | st->st_connection->spd.eroute_owner = srcisco->eroute_owner; |
| 3209 | st->st_connection->spd.routing = srcisco->routing; |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | if (inbound_also) |
| 3214 | linux_audit_conn(st, LAK_CHILD_START); |
| 3215 | return true1; |
| 3216 | } |
| 3217 | |
| 3218 | bool_Bool migrate_ipsec_sa(struct state *st) |
| 3219 | { |
| 3220 | switch (kernel_ops->type) { |
| 3221 | case USE_XFRM: |
| 3222 | /* support ah? if(!st->st_esp.present && !st->st_ah.present)) */ |
| 3223 | if (!st->st_esp.present) { |
| 3224 | log_state(RC_LOG, st, "mobike SA migration only support ESP SA"); |
| 3225 | return false0; |
| 3226 | } |
| 3227 | |
| 3228 | if (!kernel_ops->migrate_sa(st)) |
| 3229 | return false0; |
| 3230 | |
| 3231 | return true1; |
| 3232 | |
| 3233 | default: |
| 3234 | dbg("kernel: Unsupported kernel stack in migrate_ipsec_sa"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: Unsupported kernel stack in migrate_ipsec_sa" ); } }; |
| 3235 | return false0; |
| 3236 | } |
| 3237 | } |
| 3238 | |
| 3239 | /* |
| 3240 | * Delete an IPSEC SA. |
| 3241 | * we may not succeed, but we bull ahead anyway because |
| 3242 | * we cannot do anything better by recognizing failure |
| 3243 | * This used to have a parameter bool inbound_only, but |
| 3244 | * the saref code changed to always install inbound before |
| 3245 | * outbound so this it was always false, and thus removed |
| 3246 | * |
| 3247 | */ |
| 3248 | void delete_ipsec_sa(struct state *st) |
| 3249 | { |
| 3250 | /* XXX in IKEv2 we get a spurious call with a parent st :( */ |
| 3251 | if (IS_CHILD_SA(st)((st)->st_clonedfrom != 0)) { |
| 3252 | if (st->st_esp.present || st->st_ah.present) { |
| 3253 | /* ESP or AH means this was an established IPsec SA */ |
| 3254 | linux_audit_conn(st, LAK_CHILD_DESTROY); |
| 3255 | } |
| 3256 | } else { |
| 3257 | log_state(RC_LOG, st, |
| 3258 | "delete_ipsec_sa() called with (wrong?) parent state %s", |
| 3259 | st->st_state->name); |
| 3260 | } |
| 3261 | |
| 3262 | switch (kernel_ops->type) { |
| 3263 | case USE_XFRM: |
| 3264 | { |
| 3265 | /* |
| 3266 | * If the state is the eroute owner, we must adjust |
| 3267 | * the routing for the connection. |
| 3268 | */ |
| 3269 | struct connection *c = st->st_connection; |
| 3270 | struct spd_route *sr; |
| 3271 | |
| 3272 | for (sr = &c->spd; sr; sr = sr->spd_next) { |
| 3273 | if (sr->eroute_owner == st->st_serialno && |
| 3274 | sr->routing == RT_ROUTED_TUNNEL) { |
| 3275 | sr->eroute_owner = SOS_NOBODY0; |
| 3276 | |
| 3277 | /* |
| 3278 | * Routing should become |
| 3279 | * RT_ROUTED_FAILURE, |
| 3280 | * but if POLICY_FAIL_NONE, then we |
| 3281 | * just go right back to |
| 3282 | * RT_ROUTED_PROSPECTIVE as if no |
| 3283 | * failure happened. |
| 3284 | */ |
| 3285 | sr->routing = |
| 3286 | (c->policy & |
| 3287 | POLICY_FAIL_MASK(((lset_t)1 << (POLICY_FAIL1_IX)) - ((lset_t)1 << (POLICY_FAIL0_IX)) + ((lset_t)1 << (POLICY_FAIL1_IX)))) == |
| 3288 | POLICY_FAIL_NONE(SHUNT_DEFAULT * ((lset_t)1 << (POLICY_FAIL0_IX))) ? |
| 3289 | RT_ROUTED_PROSPECTIVE : |
| 3290 | RT_ROUTED_FAILURE; |
| 3291 | |
| 3292 | if (sr == &c->spd && |
| 3293 | c->remotepeertype == CISCO) |
| 3294 | continue; |
| 3295 | |
| 3296 | (void) do_command(c, sr, "down", st, st->st_logger); |
| 3297 | if ((c->policy & POLICY_OPPORTUNISTIC((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))) && |
| 3298 | c->kind == CK_INSTANCE) { |
| 3299 | /* |
| 3300 | * in this case we get rid of |
| 3301 | * the IPSEC SA |
| 3302 | */ |
| 3303 | unroute_connection(c); |
| 3304 | } else if ((c->policy & POLICY_DONT_REKEY((lset_t)1 << (POLICY_DONT_REKEY_IX))) && |
| 3305 | c->kind == CK_INSTANCE) { |
| 3306 | /* |
| 3307 | * in this special case, |
| 3308 | * even if the connection |
| 3309 | * is still alive (due to |
| 3310 | * an ISAKMP SA), |
| 3311 | * we get rid of routing. |
| 3312 | * Even though there is still |
| 3313 | * an eroute, the c->routing |
| 3314 | * setting will convince |
| 3315 | * unroute_connection to |
| 3316 | * delete it. |
| 3317 | * unroute_connection |
| 3318 | * would be upset |
| 3319 | * if c->routing == |
| 3320 | * RT_ROUTED_TUNNEL |
| 3321 | */ |
| 3322 | unroute_connection(c); |
| 3323 | } else { |
| 3324 | if (!shunt_policy(KP_REPLACE_OUTBOUND, |
| 3325 | c, sr, sr->routing, |
| 3326 | "delete_ipsec_sa() replace with shunt", |
| 3327 | st->st_logger)) { |
| 3328 | log_state(RC_LOG, st, |
| 3329 | "shunt_policy() failed replace with shunt in delete_ipsec_sa()"); |
| 3330 | } |
| 3331 | } |
| 3332 | } |
| 3333 | } |
| 3334 | (void) teardown_half_ipsec_sa(st, false0); |
| 3335 | } |
| 3336 | (void) teardown_half_ipsec_sa(st, true1); |
| 3337 | |
| 3338 | break; |
| 3339 | default: |
| 3340 | dbg("kernel: unknown kernel stack in delete_ipsec_sa"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: unknown kernel stack in delete_ipsec_sa" ); } }; |
| 3341 | break; |
| 3342 | } /* switch kernel_ops->type */ |
| 3343 | } |
| 3344 | |
| 3345 | bool_Bool was_eroute_idle(struct state *st, deltatime_t since_when) |
| 3346 | { |
| 3347 | if (kernel_ops->eroute_idle != NULL((void*)0)) |
| 3348 | return kernel_ops->eroute_idle(st, since_when); |
| 3349 | |
| 3350 | /* it is never idle if we can't check */ |
| 3351 | return false0; |
| 3352 | } |
| 3353 | |
| 3354 | /* |
| 3355 | * get information about a given sa - needs merging with was_eroute_idle |
| 3356 | * |
| 3357 | * Note: this mutates *st. |
| 3358 | */ |
| 3359 | bool_Bool get_sa_info(struct state *st, bool_Bool inbound, deltatime_t *ago /* OUTPUT */) |
| 3360 | { |
| 3361 | struct connection *const c = st->st_connection; |
| 3362 | |
| 3363 | if (kernel_ops->get_sa == NULL((void*)0) || (!st->st_esp.present && !st->st_ah.present)) { |
| 3364 | return false0; |
| 3365 | } |
| 3366 | |
| 3367 | const struct ip_protocol *proto; |
| 3368 | struct ipsec_proto_info *p2; |
| 3369 | |
| 3370 | if (st->st_esp.present) { |
| 3371 | proto = &ip_protocol_espip_protocols[IPPROTO_ESP]; |
| 3372 | p2 = &st->st_esp; |
| 3373 | } else if (st->st_ah.present) { |
| 3374 | proto = &ip_protocol_ahip_protocols[IPPROTO_AH]; |
| 3375 | p2 = &st->st_ah; |
| 3376 | } else { |
| 3377 | return false0; |
| 3378 | } |
| 3379 | |
| 3380 | /* |
| 3381 | * If we were redirected (using the REDIRECT mechanism), |
| 3382 | * change spd.that.host_addr temporarily, we reset it back |
| 3383 | * later. |
| 3384 | */ |
| 3385 | bool_Bool redirected = false0; |
| 3386 | ip_address tmp_host_addr = unset_address; |
| 3387 | unsigned tmp_host_port = 0; |
| 3388 | if (!endpoint_address_eq_address(st->st_remote_endpoint, c->spd.that.host_addr) && |
| 3389 | address_is_specified(c->temp_vars.redirect_ip)) { |
| 3390 | redirected = true1; |
| 3391 | tmp_host_addr = c->spd.that.host_addr; |
| 3392 | tmp_host_port = c->spd.that.host_port; /* XXX: needed? */ |
| 3393 | c->spd.that.host_addr = endpoint_address(st->st_remote_endpoint); |
| 3394 | c->spd.that.host_port = endpoint_hport(st->st_remote_endpoint); |
| 3395 | } |
| 3396 | |
| 3397 | const ip_address *src, *dst; |
| 3398 | ipsec_spi_t spi; |
| 3399 | if (inbound) { |
| 3400 | src = &c->spd.that.host_addr; |
| 3401 | dst = &c->spd.this.host_addr; |
| 3402 | spi = p2->our_spi; |
| 3403 | } else { |
| 3404 | src = &c->spd.this.host_addr; |
| 3405 | dst = &c->spd.that.host_addr; |
| 3406 | spi = p2->attrs.spi; |
| 3407 | } |
| 3408 | |
| 3409 | said_buf sb; |
| 3410 | struct kernel_sa sa = { |
| 3411 | .spi = spi, |
| 3412 | .proto = proto, |
| 3413 | .src.address = src, |
| 3414 | .dst.address = dst, |
| 3415 | .story = said_str(*dst, proto, spi, &sb), |
| 3416 | }; |
| 3417 | |
| 3418 | dbg("kernel: get_sa_info %s", sa.story){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: get_sa_info %s", sa.story); } }; |
| 3419 | |
| 3420 | uint64_t bytes; |
| 3421 | uint64_t add_time; |
| 3422 | |
| 3423 | if (!kernel_ops->get_sa(&sa, &bytes, &add_time, st->st_logger)) |
| 3424 | return false0; |
| 3425 | |
| 3426 | p2->add_time = add_time; |
| 3427 | |
| 3428 | /* field has been set? */ |
| 3429 | passert(!is_monotime_epoch(p2->our_lastused))({ _Bool assertion__ = !is_monotime_epoch(p2->our_lastused ); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 3429, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "!is_monotime_epoch(p2->our_lastused)" ); } (void) 1; }); |
| 3430 | passert(!is_monotime_epoch(p2->peer_lastused))({ _Bool assertion__ = !is_monotime_epoch(p2->peer_lastused ); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 3430, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "!is_monotime_epoch(p2->peer_lastused)" ); } (void) 1; }); |
| 3431 | |
| 3432 | if (inbound) { |
| 3433 | if (bytes > p2->our_bytes) { |
| 3434 | p2->our_bytes = bytes; |
| 3435 | p2->our_lastused = mononow(); |
| 3436 | } |
| 3437 | if (ago != NULL((void*)0)) |
| 3438 | *ago = monotimediff(mononow(), p2->our_lastused); |
| 3439 | } else { |
| 3440 | if (bytes > p2->peer_bytes) { |
| 3441 | p2->peer_bytes = bytes; |
| 3442 | p2->peer_lastused = mononow(); |
| 3443 | } |
| 3444 | if (ago != NULL((void*)0)) |
| 3445 | *ago = monotimediff(mononow(), p2->peer_lastused); |
| 3446 | } |
| 3447 | |
| 3448 | if (redirected) { |
| 3449 | c->spd.that.host_addr = tmp_host_addr; |
| 3450 | c->spd.that.host_port = tmp_host_port; |
| 3451 | } |
| 3452 | |
| 3453 | return true1; |
| 3454 | } |
| 3455 | |
| 3456 | bool_Bool orphan_holdpass(const struct connection *c, struct spd_route *sr, |
| 3457 | int transport_proto, ipsec_spi_t failure_shunt, |
| 3458 | struct logger *logger) |
| 3459 | { |
| 3460 | enum routing_t ro = sr->routing, /* routing, old */ |
| 3461 | rn = ro; /* routing, new */ |
| 3462 | ipsec_spi_t negotiation_shunt = (c->policy & POLICY_NEGO_PASS((lset_t)1 << (POLICY_NEGO_PASS_IX))) ? SPI_PASS : SPI_DROP; |
| 3463 | |
| 3464 | if (negotiation_shunt != failure_shunt ) { |
| 3465 | dbg("kernel: failureshunt != negotiationshunt, needs replacing"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: failureshunt != negotiationshunt, needs replacing" ); } }; |
| 3466 | } else { |
| 3467 | dbg("kernel: failureshunt == negotiationshunt, no replace needed"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: failureshunt == negotiationshunt, no replace needed" ); } }; |
| 3468 | } |
| 3469 | |
| 3470 | dbg("kernel: orphan_holdpass() called for %s with transport_proto '%d' and sport %d and dport %d",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphan_holdpass() called for %s with transport_proto '%d' and sport %d and dport %d" , c->name, transport_proto, sr->this.port, sr->that. port); } } |
| 3471 | c->name, transport_proto, sr->this.port, sr->that.port){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphan_holdpass() called for %s with transport_proto '%d' and sport %d and dport %d" , c->name, transport_proto, sr->this.port, sr->that. port); } }; |
| 3472 | |
| 3473 | passert(LHAS(LELEM(CK_PERMANENT) | LELEM(CK_INSTANCE) |({ _Bool assertion__ = (((((lset_t)1 << (CK_PERMANENT)) | ((lset_t)1 << (CK_INSTANCE)) | ((lset_t)1 << ( CK_GOING_AWAY))) & ((lset_t)1 << (c->kind))) != ( (lset_t)0)); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 3474, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "(((((lset_t)1 << (CK_PERMANENT)) | ((lset_t)1 << (CK_INSTANCE)) | ((lset_t)1 << (CK_GOING_AWAY))) & ((lset_t)1 << (c->kind))) != ((lset_t)0))" ); } (void) 1; }) |
| 3474 | LELEM(CK_GOING_AWAY), c->kind))({ _Bool assertion__ = (((((lset_t)1 << (CK_PERMANENT)) | ((lset_t)1 << (CK_INSTANCE)) | ((lset_t)1 << ( CK_GOING_AWAY))) & ((lset_t)1 << (c->kind))) != ( (lset_t)0)); if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c" , .line = 3474, }; &here; }); const struct logger *logger_ = &failsafe_logger; llog_passert(logger_, here, "%s", "(((((lset_t)1 << (CK_PERMANENT)) | ((lset_t)1 << (CK_INSTANCE)) | ((lset_t)1 << (CK_GOING_AWAY))) & ((lset_t)1 << (c->kind))) != ((lset_t)0))" ); } (void) 1; }); |
| 3475 | |
| 3476 | switch (ro) { |
| 3477 | case RT_UNROUTED_HOLD: |
| 3478 | rn = RT_UNROUTED; |
| 3479 | dbg("kernel: orphan_holdpass unrouted: hold -> pass"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphan_holdpass unrouted: hold -> pass" ); } }; |
| 3480 | break; |
| 3481 | case RT_UNROUTED: |
| 3482 | rn = RT_UNROUTED_HOLD; |
| 3483 | dbg("kernel: orphan_holdpass unrouted: pass -> hold"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphan_holdpass unrouted: pass -> hold" ); } }; |
| 3484 | break; |
| 3485 | case RT_ROUTED_HOLD: |
| 3486 | rn = RT_ROUTED_PROSPECTIVE; |
| 3487 | dbg("kernel: orphan_holdpass routed: hold -> trap (?)"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphan_holdpass routed: hold -> trap (?)" ); } }; |
| 3488 | break; |
| 3489 | default: |
| 3490 | dbg("kernel: no routing change needed for ro=%s - negotiation shunt matched failure shunt?",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: no routing change needed for ro=%s - negotiation shunt matched failure shunt?" , enum_name(&routing_story, ro)); } } |
| 3491 | enum_name(&routing_story, ro)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: no routing change needed for ro=%s - negotiation shunt matched failure shunt?" , enum_name(&routing_story, ro)); } }; |
| 3492 | break; |
| 3493 | } |
| 3494 | |
| 3495 | dbg("kernel: orphaning holdpass for connection '%s', routing was %s, needs to be %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } } |
| 3496 | c->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } } |
| 3497 | enum_name(&routing_story, ro),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } } |
| 3498 | enum_name(&routing_story, rn)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } }; |
| 3499 | |
| 3500 | { |
| 3501 | /* are we replacing a bare shunt ? */ |
| 3502 | update_selector_hport(&sr->this.client, sr->this.port){ (&sr->this.client)->hport = (sr->this.port); }; |
| 3503 | update_selector_hport(&sr->that.client, sr->that.port){ (&sr->that.client)->hport = (sr->that.port); }; |
| 3504 | struct bare_shunt **old = bare_shunt_ptr(&sr->this.client, |
| 3505 | &sr->that.client, |
| 3506 | sr->this.protocol, |
| 3507 | "orphan holdpass"); |
| 3508 | |
| 3509 | if (old != NULL((void*)0)) { |
| 3510 | free_bare_shunt(old); |
| 3511 | } |
| 3512 | } |
| 3513 | |
| 3514 | /* |
| 3515 | * create the bare shunt and update kernel policy if needed. |
| 3516 | */ |
| 3517 | { |
| 3518 | /* |
| 3519 | * XXX: merge this add bare shunt code with that |
| 3520 | * following the raw_policy() call!?! |
| 3521 | */ |
| 3522 | struct bare_shunt *bs = alloc_thing(struct bare_shunt, "orphan shunt")((struct bare_shunt*) alloc_bytes(sizeof(struct bare_shunt), ( "orphan shunt"))); |
| 3523 | |
| 3524 | bs->why = "oe-failing"; |
| 3525 | bs->our_client = sr->this.client; |
| 3526 | bs->peer_client = sr->that.client; |
| 3527 | bs->transport_proto = sr->this.protocol; |
| 3528 | bs->policy_prio = BOTTOM_PRIO((policy_prio_t)0); |
| 3529 | |
| 3530 | bs->said = said_from_address_protocol_spi(selector_type(&sr->this.client)->address.any, |
| 3531 | &ip_protocol_internalip_protocols[61], |
| 3532 | htonl(negotiation_shunt)); |
| 3533 | |
| 3534 | bs->count = 0; |
| 3535 | bs->last_activity = mononow(); |
| 3536 | if (strstr(c->name, "/32") != NULL((void*)0) || strstr(c->name, "/128") != NULL((void*)0)) { |
| 3537 | bs->from_serialno = c->serialno; |
| 3538 | } |
| 3539 | |
| 3540 | bs->next = bare_shunts; |
| 3541 | bare_shunts = bs; |
| 3542 | dbg_bare_shunt("add", bs); |
| 3543 | |
| 3544 | /* update kernel policy if needed */ |
| 3545 | /* This really causes the name to remain "oe-failing", we should be able to update only only the name of the shunt */ |
| 3546 | if (negotiation_shunt != failure_shunt ) { |
| 3547 | |
| 3548 | dbg("kernel: replacing negotiation_shunt with failure_shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: replacing negotiation_shunt with failure_shunt" ); } }; |
| 3549 | |
| 3550 | /* fudge up parameter list */ |
| 3551 | const ip_address *src_address = &sr->this.host_addr; |
| 3552 | const ip_address *dst_address = &sr->that.host_addr; |
| 3553 | policy_prio_t policy_prio = bs->policy_prio; /* of replacing shunt*/ |
| 3554 | ipsec_spi_t cur_shunt_spi = negotiation_shunt; /* in host order! */ |
| 3555 | ipsec_spi_t new_shunt_spi = failure_shunt; /* in host order! */ |
| 3556 | int transport_proto = bs->transport_proto; |
| 3557 | const char *why = "oe-failed"; |
| 3558 | |
| 3559 | /* fudge up replace_bare_shunt() */ |
| 3560 | const struct ip_info *afi = address_type(src_address); |
| 3561 | passert(afi == address_type(dst_address))({ _Bool assertion__ = afi == address_type(dst_address); if ( !assertion__) { where_t here = ({ static const struct where here = { .func = __func__, .file = "programs/pluto/kernel.c", .line = 3561, }; &here; }); const struct logger *logger_ = & failsafe_logger; llog_passert(logger_, here, "%s", "afi == address_type(dst_address)" ); } (void) 1; }); |
| 3562 | const ip_protocol *protocol = protocol_by_ipproto(transport_proto); |
| 3563 | /* ports? assumed wide? */ |
| 3564 | ip_selector src = selector_from_address_protocol(*src_address, protocol); |
| 3565 | ip_selector dst = selector_from_address_protocol(*dst_address, protocol); |
| 3566 | |
| 3567 | selectors_buf sb; |
| 3568 | dbg("kernel: replace bare shunt %s for %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: replace bare shunt %s for %s", str_selectors (&src, &dst, &sb), why); } } |
| 3569 | str_selectors(&src, &dst, &sb), why){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: replace bare shunt %s for %s", str_selectors (&src, &dst, &sb), why); } }; |
| 3570 | |
| 3571 | /* |
| 3572 | * ??? this comment might be obsolete. |
| 3573 | * |
| 3574 | * If the transport protocol is not the |
| 3575 | * wildcard (0), then we need to look for a |
| 3576 | * host<->host shunt, and replace that with |
| 3577 | * the shunt spi, and then we add a %HOLD for |
| 3578 | * what was there before. |
| 3579 | * |
| 3580 | * This is at odds with !repl, which should |
| 3581 | * delete things. |
| 3582 | */ |
| 3583 | |
| 3584 | const ip_address null_host = afi->address.any; |
| 3585 | bool_Bool ok = raw_policy(KP_REPLACE_OUTBOUND, |
| 3586 | &null_host, &src, &null_host, &dst, |
| 3587 | htonl(cur_shunt_spi), htonl(new_shunt_spi), |
| 3588 | transport_proto, ET_INT, |
| 3589 | esp_transport_proto_info&esp_transport_kernel_encap, |
| 3590 | deltatime(SHUNT_PATIENCE((2 * 10) * 15 / 2)), |
| 3591 | 0, /* we don't know connection for priority yet */ |
| 3592 | NULL((void*)0), /* sa_marks */ |
| 3593 | 0 /* xfrm interface id */, |
| 3594 | null_shunk, logger, |
| 3595 | "%s() %s", __func__, why); |
| 3596 | if (!ok) { |
| 3597 | llog(RC_LOG, logger, |
| 3598 | "replace kernel shunt %s failed - deleting from pluto shunt table", |
| 3599 | str_selectors_sensitive(&src, &dst, &sb)); |
| 3600 | } |
| 3601 | |
| 3602 | /* |
| 3603 | * We can have proto mismatching acquires with |
| 3604 | * xfrm - this is a bad workaround. |
| 3605 | * |
| 3606 | * ??? what is the nature of those mismatching |
| 3607 | * acquires? |
| 3608 | * |
| 3609 | * XXX: for instance, when whack initiates an |
| 3610 | * OE connection. There is no kernel-acquire |
| 3611 | * shunt to remove. |
| 3612 | * |
| 3613 | * XXX: see above, this code is looking for |
| 3614 | * and fiddling with the shunt only just added |
| 3615 | * above? |
| 3616 | */ |
| 3617 | struct bare_shunt **bs_pp = bare_shunt_ptr(&src, &dst, transport_proto, why); |
| 3618 | /* passert(bs_pp != NULL); */ |
| 3619 | if (bs_pp == NULL((void*)0)) { |
| 3620 | selectors_buf sb; |
| 3621 | llog(RC_LOG, logger, |
| 3622 | "can't find expected bare shunt to %s: %s", |
| 3623 | ok ? "replace" : "delete", |
| 3624 | str_selectors_sensitive(&src, &dst, &sb)); |
| 3625 | } else if (ok) { |
| 3626 | /* |
| 3627 | * change over to new bare eroute |
| 3628 | * ours, peers, transport_proto are |
| 3629 | * the same. |
| 3630 | */ |
| 3631 | struct bare_shunt *bs = *bs_pp; |
| 3632 | bs->why = why; |
| 3633 | bs->policy_prio = policy_prio; |
| 3634 | bs->said = said_from_address_protocol_spi(null_host, |
| 3635 | &ip_protocol_internalip_protocols[61], |
| 3636 | htonl(new_shunt_spi)); |
| 3637 | bs->count = 0; |
| 3638 | bs->last_activity = mononow(); |
| 3639 | dbg_bare_shunt("replace", bs); |
| 3640 | } else { |
| 3641 | llog(RC_LOG, logger, |
| 3642 | "assign_holdpass() failed to update shunt policy"); |
| 3643 | free_bare_shunt(bs_pp); |
| 3644 | } |
| 3645 | } else { |
| 3646 | dbg("kernel: No need to replace negotiation_shunt with failure_shunt - they are the same"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: No need to replace negotiation_shunt with failure_shunt - they are the same" ); } }; |
| 3647 | } |
| 3648 | } |
| 3649 | |
| 3650 | /* change routing so we don't get cleared out when state/connection dies */ |
| 3651 | sr->routing = rn; |
| 3652 | dbg("kernel: orphan_holdpas() done - returning success"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: orphan_holdpas() done - returning success" ); } }; |
| 3653 | return true1; |
| 3654 | } |
| 3655 | |
| 3656 | static void expire_bare_shunts(struct logger *logger, bool_Bool all) |
| 3657 | { |
| 3658 | dbg("kernel: checking for aged bare shunts from shunt table to expire"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("kernel: checking for aged bare shunts from shunt table to expire" ); } }; |
| 3659 | for (struct bare_shunt **bspp = &bare_shunts; *bspp != NULL((void*)0); ) { |
| 3660 | struct bare_shunt *bsp = *bspp; |
| 3661 | time_t age = deltasecs(monotimediff(mononow(), bsp->last_activity)); |
| 3662 | |
| 3663 | if (age > deltasecs(pluto_shunt_lifetime) || all) { |
| 3664 | dbg_bare_shunt("expiring old", bsp); |
| 3665 | if (co_serial_is_set(bsp->from_serialno)((bsp->from_serialno) != UNSET_CO_SERIAL)) { |
| 3666 | struct connection *c = connection_by_serialno(bsp->from_serialno); |
| 3667 | if (c != NULL((void*)0)) { |
| 3668 | if (!shunt_policy(KP_ADD_OUTBOUND, c, &c->spd, |
| 3669 | RT_ROUTED_PROSPECTIVE, |
| 3670 | "expire_bare_shunts() add", |
| 3671 | logger)) { |
| 3672 | llog(RC_LOG, logger, |
| 3673 | "trap shunt install failed "); |
| 3674 | } |
| 3675 | } |
| 3676 | } |
| 3677 | ip_address our_addr = selector_prefix(bsp->our_client); |
| 3678 | ip_address peer_addr = selector_prefix(bsp->peer_client); |
| 3679 | bool_Bool skip_xfrm_policy_delete = co_serial_is_set(bsp->from_serialno)((bsp->from_serialno) != UNSET_CO_SERIAL); |
| 3680 | if (!delete_bare_shunt(&our_addr, &peer_addr, |
| 3681 | bsp->transport_proto, |
| 3682 | ntohl(bsp->said.spi), |
| 3683 | skip_xfrm_policy_delete, |
| 3684 | "expire_bare_shunts()", logger)) { |
| 3685 | llog(RC_LOG_SERIOUS, logger, |
| 3686 | "failed to delete bare shunt"); |
| 3687 | } |
| 3688 | passert(bsp != *bspp)({ _Bool assertion__ = bsp != *bspp; if (!assertion__) { where_t here = ({ static const struct where here = { .func = __func__ , .file = "programs/pluto/kernel.c", .line = 3688, }; &here ; }); const struct logger *logger_ = &failsafe_logger; llog_passert (logger_, here, "%s", "bsp != *bspp"); } (void) 1; }); |
| 3689 | } else { |
| 3690 | dbg_bare_shunt("keeping recent", bsp); |
| 3691 | bspp = &bsp->next; |
| 3692 | } |
| 3693 | } |
| 3694 | } |
| 3695 | |
| 3696 | static void kernel_scan_shunts(struct logger *logger) |
| 3697 | { |
| 3698 | expire_bare_shunts(logger, false0/*not-all*/); |
| 3699 | } |
| 3700 | |
| 3701 | void shutdown_kernel(struct logger *logger) |
| 3702 | { |
| 3703 | |
| 3704 | if (kernel_ops->shutdown != NULL((void*)0)) |
| 3705 | kernel_ops->shutdown(logger); |
| 3706 | expire_bare_shunts(logger, true1/*all*/); |
| 3707 | } |