| File: | programs/pluto/kernel.c |
| Warning: | line 2145, column 4 Value stored to 'incoming_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 | #include "lsw-pfkeyv2.h" /* for SADB_X_CALG_DEFLATE et.al., grrr */ |
| 53 | |
| 54 | #include "defs.h" |
| 55 | #include "rnd.h" |
| 56 | #include "id.h" |
| 57 | #include "connections.h" /* needs id.h */ |
| 58 | #include "state.h" |
| 59 | #include "timer.h" |
| 60 | #include "kernel.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 | bool_Bool can_do_IPcomp = TRUE1; /* can system actually perform IPCOMP? */ |
| 87 | |
| 88 | /* test if the routes required for two different connections agree |
| 89 | * It is assumed that the destination subnets agree; we are only |
| 90 | * testing that the interfaces and nexthops match. |
| 91 | */ |
| 92 | #define routes_agree(c, d)((c)->interface->ip_dev == (d)->interface->ip_dev && sameaddr(&(c)->spd.this.host_nexthop, & (d)->spd.this.host_nexthop)) \ |
| 93 | ((c)->interface->ip_dev == (d)->interface->ip_dev && \ |
| 94 | sameaddr(&(c)->spd.this.host_nexthop, &(d)->spd.this.host_nexthop)) |
| 95 | |
| 96 | const struct pfkey_proto_info null_proto_info[2] = { |
| 97 | { |
| 98 | .proto = IPPROTO_ESPIPPROTO_ESP, |
| 99 | .mode = ENCAPSULATION_MODE_TRANSPORT2, |
| 100 | .reqid = 0 |
| 101 | }, |
| 102 | { |
| 103 | .proto = 0, |
| 104 | .mode = 0, |
| 105 | .reqid = 0 |
| 106 | } |
| 107 | }; |
| 108 | |
| 109 | struct bare_shunt { |
| 110 | policy_prio_t policy_prio; |
| 111 | ip_selector our_client; |
| 112 | ip_selector peer_client; |
| 113 | ip_said said; |
| 114 | int transport_proto; /* XXX: same value in local/remote */ |
| 115 | unsigned long count; |
| 116 | monotime_t last_activity; |
| 117 | |
| 118 | /* |
| 119 | * Note: "why" must be in stable storage (not auto, not heap) |
| 120 | * because we use it indefinitely without copying or pfreeing. |
| 121 | * Simple rule: use a string literal. |
| 122 | */ |
| 123 | const char *why; |
| 124 | /* the connection from where it came - used to re-load /32 conns */ |
| 125 | char *from_cn; |
| 126 | |
| 127 | struct bare_shunt *next; |
| 128 | }; |
| 129 | |
| 130 | static struct bare_shunt *bare_shunts = NULL((void*)0); |
| 131 | |
| 132 | #ifdef IPSEC_CONNECTION_LIMIT |
| 133 | static int num_ipsec_eroute = 0; |
| 134 | #endif |
| 135 | |
| 136 | static void log_bare_shunt(lset_t rc_flags, const char *op, const struct bare_shunt *bs) |
| 137 | { |
| 138 | said_buf sat; |
| 139 | selector_buf ourb; |
| 140 | selector_buf peerb; |
| 141 | |
| 142 | char prio[POLICY_PRIO_BUF(3 + 1 + 3 + 1 + 10)]; |
| 143 | fmt_policy_prio(bs->policy_prio, prio); |
| 144 | |
| 145 | log_global(rc_flags, null_fd,{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 146 | "%s bare shunt %p %s --%d--> %s => %s %s %s",{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 147 | op, (const void *)bs,{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 148 | str_selector(&bs->our_client, &ourb),{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 149 | bs->transport_proto,{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 150 | str_selector(&bs->peer_client, &peerb),{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 151 | str_said(&bs->said, &sat),{ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); } |
| 152 | prio, bs->why){ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 152}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(rc_flags, &log_ , "%s bare shunt %p %s --%d--> %s => %s %s %s", op, ( const void *)bs, str_selector(&bs->our_client, &ourb ), bs->transport_proto, str_selector(&bs->peer_client , &peerb), str_said(&bs->said, &sat), prio, bs ->why); }; |
| 153 | } |
| 154 | |
| 155 | static void dbg_bare_shunt(const char *op, const struct bare_shunt *bs) |
| 156 | { |
| 157 | /* same as log_bare_shunt but goes to debug log */ |
| 158 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 159 | log_bare_shunt(DEBUG_STREAM, op, bs); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * Note: "why" must be in stable storage (not auto, not heap) |
| 165 | * because we use it indefinitely without copying or pfreeing. |
| 166 | * Simple rule: use a string literal. |
| 167 | */ |
| 168 | void add_bare_shunt(const ip_subnet *our_client, const ip_subnet *peer_client, |
| 169 | int transport_proto, ipsec_spi_t shunt_spi, |
| 170 | const char *why) |
| 171 | { |
| 172 | /* report any duplication; this should NOT happen */ |
| 173 | struct bare_shunt **bspp = bare_shunt_ptr(our_client, peer_client, transport_proto); |
| 174 | |
| 175 | if (bspp != NULL((void*)0)) { |
| 176 | /* maybe: passert(bsp == NULL); */ |
| 177 | log_bare_shunt(RC_LOG, "CONFLICTING existing", *bspp); |
| 178 | } |
| 179 | |
| 180 | struct bare_shunt *bs = alloc_thing(struct bare_shunt,((struct bare_shunt*) alloc_bytes(sizeof(struct bare_shunt), ( "bare shunt"))) |
| 181 | "bare shunt")((struct bare_shunt*) alloc_bytes(sizeof(struct bare_shunt), ( "bare shunt"))); |
| 182 | |
| 183 | bs->why = why; |
| 184 | bs->from_cn = NULL((void*)0); |
| 185 | bs->our_client = *our_client; |
| 186 | bs->peer_client = *peer_client; |
| 187 | bs->transport_proto = transport_proto; |
| 188 | bs->policy_prio = BOTTOM_PRIO((policy_prio_t)0); |
| 189 | |
| 190 | bs->said = said3(&subnet_type(our_client)->any_address, htonl(shunt_spi), &ip_protocol_internal); |
| 191 | bs->count = 0; |
| 192 | bs->last_activity = mononow(); |
| 193 | |
| 194 | bs->next = bare_shunts; |
| 195 | bare_shunts = bs; |
| 196 | dbg_bare_shunt("add", bs); |
| 197 | |
| 198 | /* report duplication; this should NOT happen */ |
| 199 | if (bspp != NULL((void*)0)) { |
| 200 | log_bare_shunt(RC_LOG, "CONFLICTING new", bs); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | |
| 205 | /* |
| 206 | * Note: "why" must be in stable storage (not auto, not heap) |
| 207 | * because we use it indefinitely without copying or pfreeing. |
| 208 | * Simple rule: use a string literal. |
| 209 | */ |
| 210 | |
| 211 | void record_and_initiate_opportunistic(const ip_selector *our_client, |
| 212 | const ip_selector *peer_client, |
| 213 | unsigned transport_proto, |
| 214 | struct xfrm_user_sec_ctx_ike *uctx, |
| 215 | const char *why) |
| 216 | { |
| 217 | passert(selector_type(our_client) == selector_type(peer_client)){ _Bool assertion__ = selector_type(our_client) == selector_type (peer_client); if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__, .basename = "kernel.c" , .line = 217}, "%s" , "selector_type(our_client) == selector_type(peer_client)"); } }; |
| 218 | passert(selector_ipproto(our_client) == transport_proto){ _Bool assertion__ = selector_ipproto(our_client) == transport_proto ; if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 218}, "%s", "selector_ipproto(our_client) == transport_proto" ); } }; |
| 219 | passert(selector_ipproto(peer_client) == transport_proto){ _Bool assertion__ = selector_ipproto(peer_client) == transport_proto ; if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 219}, "%s", "selector_ipproto(peer_client) == transport_proto" ); } }; |
| 220 | /* XXX: port may or may not be zero */ |
| 221 | |
| 222 | /* |
| 223 | * Add the kernel shunt to the pluto bare shunt list. |
| 224 | * |
| 225 | * We need to do this because the %hold shunt was installed by |
| 226 | * kernel and we want to keep track of it inside pluto. |
| 227 | */ |
| 228 | |
| 229 | /*const*/ struct bare_shunt **bspp = bare_shunt_ptr(our_client, peer_client, |
| 230 | transport_proto); |
| 231 | if (bspp != NULL((void*)0) && |
| 232 | (*bspp)->said.proto == &ip_protocol_internal && |
| 233 | (*bspp)->said.spi == htonl(SPI_HOLD259)) { |
| 234 | log_global(RC_LOG_SERIOUS, null_fd, "existing bare shunt found - refusing to add a duplicate"){ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 234}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(RC_LOG_SERIOUS, & log_, "existing bare shunt found - refusing to add a duplicate" ); }; |
| 235 | /* should we continue with initiate_ondemand() ? */ |
| 236 | } else { |
| 237 | add_bare_shunt(our_client, peer_client, transport_proto, SPI_HOLD259, why); |
| 238 | } |
| 239 | |
| 240 | /* XXX: missing transport_proto */ |
| 241 | ip_address sp = subnet_prefix(our_client); |
| 242 | ip_address dp = subnet_prefix(peer_client); |
| 243 | ip_endpoint src = endpoint(&sp, subnet_hport(our_client)); |
| 244 | ip_endpoint dst = endpoint(&dp, subnet_hport(peer_client)); |
| 245 | passert(endpoint_type(&src) == endpoint_type(&dst)){ _Bool assertion__ = endpoint_type(&src) == endpoint_type (&dst); if (!assertion__) { lsw_passert_fail((where_t) { . func = __func__, .basename = "kernel.c" , .line = 245}, "%s", "endpoint_type(&src) == endpoint_type(&dst)"); } }; /* duh */ |
| 246 | |
| 247 | /* actually initiate opportunism / ondemand */ |
| 248 | initiate_ondemand(&src, &dst, transport_proto, |
| 249 | TRUE1, null_fd((struct fd *) ((void*)0)), true1/*background*/, |
| 250 | uctx, "acquire"); |
| 251 | |
| 252 | if (kernel_ops->remove_orphaned_holds != NULL((void*)0)) { |
| 253 | dbg("record_and_initiate_opportunistic(): tell kernel to remove orphan hold for our bare shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("record_and_initiate_opportunistic(): tell kernel to remove orphan hold for our bare shunt" ); } }; |
| 254 | kernel_ops->remove_orphaned_holds(transport_proto, |
| 255 | our_client, peer_client); |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | static reqid_t get_proto_reqid(reqid_t base, const struct ip_protocol *proto) |
| 260 | { |
| 261 | if (proto == &ip_protocol_comp) |
| 262 | return reqid_ipcomp(base); |
| 263 | |
| 264 | if (proto == &ip_protocol_esp) |
| 265 | return reqid_esp(base); |
| 266 | |
| 267 | if (proto == &ip_protocol_ah) |
| 268 | return reqid_ah(base); |
| 269 | |
| 270 | PASSERT_FAIL("bad protocol %s", proto->name)lsw_passert_fail((where_t) { .func = __func__, .basename = "kernel.c" , .line = 270}, "bad protocol %s", proto->name); |
| 271 | } |
| 272 | |
| 273 | /* Generate Unique SPI numbers. |
| 274 | * |
| 275 | * The specs say that the number must not be less than IPSEC_DOI_SPI_MIN. |
| 276 | * Pluto generates numbers not less than IPSEC_DOI_SPI_OUR_MIN, |
| 277 | * reserving numbers in between for manual keying (but we cannot so |
| 278 | * restrict numbers generated by our peer). |
| 279 | * XXX This should be replaced by a call to the kernel when |
| 280 | * XXX we get an API. |
| 281 | * The returned SPI is in network byte order. |
| 282 | * We use a random number as the initial SPI so that there is |
| 283 | * a good chance that different Pluto instances will choose |
| 284 | * different SPIs. This is good for two reasons. |
| 285 | * - the keying material for the initiator and responder only |
| 286 | * differs if the SPIs differ. |
| 287 | * - if Pluto is restarted, it would otherwise recycle the SPI |
| 288 | * numbers and confuse everything. When the kernel generates |
| 289 | * SPIs, this will no longer matter. |
| 290 | * We then allocate numbers sequentially. Thus we don't have to |
| 291 | * check if the number was previously used (assuming that no |
| 292 | * SPI lives longer than 4G of its successors). |
| 293 | */ |
| 294 | ipsec_spi_t get_ipsec_spi(ipsec_spi_t avoid, |
| 295 | const struct ip_protocol *proto, |
| 296 | const struct spd_route *sr, |
| 297 | bool_Bool tunnel) |
| 298 | { |
| 299 | passert(proto == &ip_protocol_ah || proto == &ip_protocol_esp){ _Bool assertion__ = proto == &ip_protocol_ah || proto == &ip_protocol_esp; if (!assertion__) { lsw_passert_fail(( where_t) { .func = __func__, .basename = "kernel.c" , .line = 299}, "%s", "proto == &ip_protocol_ah || proto == &ip_protocol_esp" ); } }; |
| 300 | |
| 301 | if (kernel_ops->get_spi != NULL((void*)0)) { |
| 302 | char text_said[SATOT_BUFsizeof(said_buf)]; |
| 303 | set_text_said(text_said, &sr->this.host_addr, 0, proto); |
| 304 | return kernel_ops->get_spi(&sr->that.host_addr, |
| 305 | &sr->this.host_addr, proto, tunnel, |
| 306 | get_proto_reqid(sr->reqid, proto), |
| 307 | IPSEC_DOI_SPI_OUR_MIN0x1000, 0xffffffff, |
| 308 | text_said); |
| 309 | } else { |
| 310 | static ipsec_spi_t spi = 0; /* host order, so not returned directly! */ |
| 311 | |
| 312 | spi++; |
| 313 | while (spi < IPSEC_DOI_SPI_OUR_MIN0x1000 || spi == ntohl(avoid)) |
| 314 | get_rnd_bytes((u_char *)&spi, sizeof(spi)); |
| 315 | |
| 316 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 317 | ipsec_spi_t spi_net = htonl(spi); |
| 318 | DBG_dump("generate SPI:", (u_char *)&spi_net, |
| 319 | sizeof(spi_net)); |
| 320 | } |
| 321 | |
| 322 | return htonl(spi); |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | /* Generate Unique CPI numbers. |
| 327 | * The result is returned as an SPI (4 bytes) in network order! |
| 328 | * The real bits are in the nework-low-order 2 bytes. |
| 329 | * Modelled on get_ipsec_spi, but range is more limited: |
| 330 | * 256-61439. |
| 331 | * If we can't find one easily, return 0 (a bad SPI, |
| 332 | * no matter what order) indicating failure. |
| 333 | */ |
| 334 | ipsec_spi_t get_my_cpi(const struct spd_route *sr, bool_Bool tunnel) |
| 335 | { |
| 336 | if (kernel_ops->get_spi != NULL((void*)0)) { |
| 337 | char text_said[SATOT_BUFsizeof(said_buf)]; |
| 338 | set_text_said(text_said, &sr->this.host_addr, 0, &ip_protocol_comp); |
| 339 | return kernel_ops->get_spi(&sr->that.host_addr, |
| 340 | &sr->this.host_addr, &ip_protocol_comp, |
| 341 | tunnel, |
| 342 | get_proto_reqid(sr->reqid, &ip_protocol_comp), |
| 343 | IPCOMP_FIRST_NEGOTIATED256, |
| 344 | IPCOMP_LAST_NEGOTIATED61439, |
| 345 | text_said); |
| 346 | } else { |
| 347 | static cpi_t first_busy_cpi = 0; |
| 348 | static cpi_t latest_cpi = 0; |
| 349 | |
| 350 | while (!(IPCOMP_FIRST_NEGOTIATED256 <= first_busy_cpi && |
| 351 | first_busy_cpi < IPCOMP_LAST_NEGOTIATED61439)) { |
| 352 | get_rnd_bytes((u_char *)&first_busy_cpi, |
| 353 | sizeof(first_busy_cpi)); |
| 354 | latest_cpi = first_busy_cpi; |
| 355 | } |
| 356 | |
| 357 | latest_cpi++; |
| 358 | |
| 359 | if (latest_cpi == first_busy_cpi) |
| 360 | find_my_cpi_gap(&latest_cpi, &first_busy_cpi); |
| 361 | |
| 362 | if (latest_cpi > IPCOMP_LAST_NEGOTIATED61439) |
| 363 | latest_cpi = IPCOMP_FIRST_NEGOTIATED256; |
| 364 | |
| 365 | return htonl((ipsec_spi_t)latest_cpi); |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * Remove all characters but [-_.0-9a-zA-Z] from a character string. |
| 371 | * Truncates the result if it would be too long. |
| 372 | */ |
| 373 | |
| 374 | static void jam_clean_xauth_username(struct jambuf *buf, const char *src) |
| 375 | { |
| 376 | bool_Bool changed = false0; |
| 377 | const char *dst = jambuf_cursor(buf); |
| 378 | while (*src != '\0') { |
| 379 | if ((*src >= '0' && *src <= '9') || |
| 380 | (*src >= 'a' && *src <= 'z') || |
| 381 | (*src >= 'A' && *src <= 'Z') || |
| 382 | *src == '_' || *src == '-' || *src == '.') { |
| 383 | jam_char(buf, *src); |
| 384 | } else { |
| 385 | changed = true1; |
| 386 | } |
| 387 | src++; |
| 388 | } |
| 389 | if (changed || !jambuf_ok(buf)) { |
| 390 | libreswan_log("Warning: XAUTH username changed from '%s' to '%s'",loglog(RC_LOG, "Warning: XAUTH username changed from '%s' to '%s'" , src, dst) |
| 391 | src, dst)loglog(RC_LOG, "Warning: XAUTH username changed from '%s' to '%s'" , src, dst); |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /* |
| 396 | * form the command string |
| 397 | * |
| 398 | * note: this mutates *st by calling get_sa_info(). |
| 399 | */ |
| 400 | static void jam_common_shell_out(struct jambuf *buf, const struct connection *c, |
| 401 | const struct spd_route *sr, struct state *st, |
| 402 | bool_Bool inbytes, bool_Bool outbytes) |
| 403 | { |
| 404 | ip_address ta; |
| 405 | |
| 406 | char *id_vname = NULL((void*)0); |
| 407 | |
| 408 | if (c->xfrmi != NULL((void*)0) && c->xfrmi->name != NULL((void*)0)) |
| 409 | id_vname = c->xfrmi->name; |
| 410 | else |
| 411 | id_vname = "NULL"; |
| 412 | |
| 413 | /* change VERSION when interface spec changes */ |
| 414 | jam(buf, "PLUTO_VERSION='2.0' "); |
| 415 | jam(buf, "PLUTO_CONNECTION='%s' ", c->name); |
| 416 | jam(buf, "PLUTO_VIRT_INTERFACE='%s' ", id_vname); |
| 417 | jam(buf, "PLUTO_INTERFACE='%s' ", c->interface == NULL((void*)0) ? "NULL" : c->interface->ip_dev->id_rname); |
| 418 | jam(buf, "PLUTO_XFRMI_ROUTE='%s' ", (c->xfrmi != NULL((void*)0) && c->xfrmi->if_id > 0) ? "yes" : ""); |
| 419 | |
| 420 | if (address_is_specified(&sr->this.host_nexthop)) { |
| 421 | jam(buf, "PLUTO_NEXT_HOP='"); |
| 422 | jam_address(buf, &sr->this.host_nexthop); |
| 423 | jam(buf, "' "); |
| 424 | } |
| 425 | |
| 426 | ipstr_buf bme; |
| 427 | jam(buf, "PLUTO_ME='%s' ", ipstr(&sr->this.host_addr, &bme)); |
| 428 | |
| 429 | jam(buf, "PLUTO_MY_ID='"); |
| 430 | jam_id(buf, &sr->this.id, jam_meta_escaped_bytes); |
| 431 | jam(buf, "' "); |
| 432 | |
| 433 | jam(buf, "PLUTO_MY_CLIENT='"); |
| 434 | jam_subnet(buf, &sr->this.client); |
| 435 | jam(buf, "' "); |
| 436 | |
| 437 | jam(buf, "PLUTO_MY_CLIENT_NET='"); |
| 438 | ta = subnet_prefix(&sr->this.client); |
| 439 | jam_address(buf, &ta); |
| 440 | jam(buf, "' "); |
| 441 | |
| 442 | jam(buf, "PLUTO_MY_CLIENT_MASK='"); |
| 443 | ta = subnet_mask(&sr->this.client); |
| 444 | jam_address(buf, &ta); |
| 445 | jam(buf, "' "); |
| 446 | |
| 447 | if (subnet_is_specified(&sr->this.host_vtiip)) { |
| 448 | jam(buf, "VTI_IP='"); |
| 449 | jam_subnet(buf, &sr->this.host_vtiip); |
| 450 | jam(buf, "' "); |
| 451 | } |
| 452 | |
| 453 | if (!isanyaddr(&sr->this.ifaceip.addr)) { |
| 454 | jam(buf, "INTERFACE_IP='"); |
| 455 | jam_subnet(buf, &sr->this.ifaceip); |
| 456 | jam(buf, "' "); |
| 457 | } |
| 458 | |
| 459 | jam(buf, "PLUTO_MY_PORT='%u' ", sr->this.port); |
| 460 | jam(buf, "PLUTO_MY_PROTOCOL='%u' ", sr->this.protocol); |
| 461 | jam(buf, "PLUTO_SA_REQID='%u' ", sr->reqid); |
| 462 | jam(buf, "PLUTO_SA_TYPE='%s' ", (st == NULL((void*)0) ? "none" : |
| 463 | st->st_esp.present ? "ESP" : |
| 464 | st->st_ah.present ? "AH" : |
| 465 | st->st_ipcomp.present ? "IPCOMP" : |
| 466 | "unknown?")); |
| 467 | ipstr_buf bpeer; |
| 468 | jam(buf, "PLUTO_PEER='%s' ", ipstr(&sr->that.host_addr, &bpeer)); |
| 469 | |
| 470 | jam(buf, "PLUTO_PEER_ID='"); |
| 471 | jam_id(buf, &sr->that.id, jam_meta_escaped_bytes); |
| 472 | jam(buf, "' "); |
| 473 | |
| 474 | jam(buf, "PLUTO_PEER_CLIENT='"); |
| 475 | jam_subnet(buf, &sr->that.client); |
| 476 | jam(buf, "' "); |
| 477 | |
| 478 | jam(buf, "PLUTO_PEER_CLIENT_NET='"); |
| 479 | ta = subnet_prefix(&sr->that.client); |
| 480 | jam_address(buf, &ta); |
| 481 | jam(buf, "' "); |
| 482 | |
| 483 | jam(buf, "PLUTO_PEER_CLIENT_MASK='"); |
| 484 | ta = subnet_mask(&sr->that.client); |
| 485 | jam_address(buf, &ta); |
| 486 | jam(buf, "' "); |
| 487 | |
| 488 | jam(buf, "PLUTO_PEER_PORT='%u' ", sr->that.port); |
| 489 | jam(buf, "PLUTO_PEER_PROTOCOL='%u' ", sr->that.protocol); |
| 490 | |
| 491 | jam(buf, "PLUTO_PEER_CA='"); |
| 492 | for (struct pubkey_list *p = pluto_pubkeys; p != NULL((void*)0); p = p->next) { |
| 493 | struct pubkey *key = p->key; |
| 494 | int pathlen; /* value ignored */ |
| 495 | if (key->type == &pubkey_type_rsa && |
| 496 | same_id(&sr->that.id, &key->id) && |
| 497 | trusted_ca_nss(key->issuer, sr->that.ca, &pathlen)) { |
| 498 | jam_dn_or_null(buf, key->issuer, "", jam_meta_escaped_bytes); |
| 499 | break; |
| 500 | } |
| 501 | } |
| 502 | jam(buf, "' "); |
| 503 | |
| 504 | jam(buf, "PLUTO_STACK='%s' ", kernel_ops->kern_name); |
| 505 | |
| 506 | if (c->metric != 0) { |
| 507 | jam(buf, "PLUTO_METRIC=%d ", c->metric); |
| 508 | } |
| 509 | |
| 510 | if (c->connmtu != 0) { |
| 511 | jam(buf, "PLUTO_MTU=%d ", c->connmtu); |
| 512 | } |
| 513 | |
| 514 | jam(buf, "PLUTO_ADDTIME='%" PRIu64"l" "u" "' ", st == NULL((void*)0) ? (uint64_t)0 : st->st_esp.add_time); |
| 515 | jam(buf, "PLUTO_CONN_POLICY='%s%s' ", prettypolicy(c->policy), NEVER_NEGOTIATE(c->policy)(((((c->policy)) & (((lset_t)1 << (POLICY_ENCRYPT_IX )) | ((lset_t)1 << (POLICY_AUTHENTICATE_IX)))) == ((lset_t )0))) ? "+NEVER_NEGOTIATE" : ""); |
| 516 | jam(buf, "PLUTO_CONN_KIND='%s' ", enum_show(&connection_kind_names, c->kind)); |
| 517 | jam(buf, "PLUTO_CONN_ADDRFAMILY='ipv%d' ", address_type(&sr->this.host_addr)->ip_version); |
| 518 | jam(buf, "XAUTH_FAILED=%d ", (st != NULL((void*)0) && st->st_xauth_soft) ? 1 : 0); |
| 519 | |
| 520 | if (st != NULL((void*)0) && st->st_xauth_username[0] != '\0') { |
| 521 | jam(buf, "PLUTO_USERNAME='"); |
| 522 | jam_clean_xauth_username(buf, st->st_xauth_username); |
| 523 | jam(buf, "' "); |
| 524 | } |
| 525 | |
| 526 | if (address_is_specified(&sr->this.host_srcip)) { |
| 527 | jam(buf, "PLUTO_MY_SOURCEIP='"); |
| 528 | jam_address(buf, &sr->this.host_srcip); |
| 529 | jam(buf, "' "); |
| 530 | if (st != NULL((void*)0)) |
| 531 | jam(buf, "PLUTO_MOBIKE_EVENT='%s' ", |
| 532 | st->st_mobike_del_src_ip ? "yes" : ""); |
| 533 | } |
| 534 | |
| 535 | jam(buf, "PLUTO_IS_PEER_CISCO='%u' ", c->remotepeertype /* ??? kind of odd printing an enum with %u */); |
| 536 | jam(buf, "PLUTO_PEER_DNS_INFO='%s' ", (st != NULL((void*)0) && st->st_seen_cfg_dns != NULL((void*)0)) ? st->st_seen_cfg_dns : ""); |
| 537 | jam(buf, "PLUTO_PEER_DOMAIN_INFO='%s' ", (st != NULL((void*)0) && st->st_seen_cfg_domains != NULL((void*)0)) ? st->st_seen_cfg_domains : ""); |
| 538 | jam(buf, "PLUTO_PEER_BANNER='%s' ", (st != NULL((void*)0) && st->st_seen_cfg_banner != NULL((void*)0)) ? st->st_seen_cfg_banner : ""); |
| 539 | jam(buf, "PLUTO_CFG_SERVER='%u' ", sr->this.modecfg_server); |
| 540 | jam(buf, "PLUTO_CFG_CLIENT='%u' ", sr->this.modecfg_client); |
| 541 | #ifdef HAVE_NM1 |
| 542 | jam(buf, "PLUTO_NM_CONFIGURED='%u' ", c->nmconfigured); |
| 543 | #endif |
| 544 | |
| 545 | if (inbytes) { |
| 546 | jam(buf, "PLUTO_INBYTES='%" PRIu64"l" "u" "' ", |
| 547 | st->st_esp.present ? st->st_esp.our_bytes : |
| 548 | st->st_ah.present ? st->st_ah.our_bytes : |
| 549 | st->st_ipcomp.present ? st->st_ipcomp.our_bytes : |
| 550 | 0); |
| 551 | } |
| 552 | if (outbytes) { |
| 553 | jam(buf, "PLUTO_OUTBYTES='%" PRIu64"l" "u" "' ", |
| 554 | st->st_esp.present ? st->st_esp.peer_bytes : |
| 555 | st->st_ah.present ? st->st_ah.peer_bytes : |
| 556 | st->st_ipcomp.present ? st->st_ipcomp.peer_bytes : |
| 557 | 0); |
| 558 | } |
| 559 | |
| 560 | if (c->nflog_group != 0) { |
| 561 | jam(buf, "NFLOG=%d ", c->nflog_group); |
| 562 | } |
| 563 | |
| 564 | if (c->sa_marks.in.val != 0) { |
| 565 | jam(buf, "CONNMARK_IN=%" PRIu32"u" "/%#08" PRIx32"x" " ", |
| 566 | c->sa_marks.in.val, c->sa_marks.in.mask); |
| 567 | } |
| 568 | if (c->sa_marks.out.val != 0) { |
| 569 | jam(buf, "CONNMARK_OUT=%" PRIu32"u" "/%#08" PRIx32"x" " ", |
| 570 | c->sa_marks.out.val, c->sa_marks.out.mask); |
| 571 | } |
| 572 | if (c->xfrmi != NULL((void*)0) && c->xfrmi->if_id > 0) { |
| 573 | if (addrinsubnet(&sr->that.host_addr, &sr->that.client)) { |
| 574 | jam(buf, "PLUTO_XFRMI_FWMARK='%" PRIu32"u" "/0xffffffff' ", |
| 575 | c->xfrmi->if_id); |
| 576 | } else { |
| 577 | address_buf bpeer; |
| 578 | subnet_buf peerclient_str; |
| 579 | 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_subnet (&sr->that.client, &peerclient_str)); } } |
| 580 | 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_subnet (&sr->that.client, &peerclient_str)); } } |
| 581 | str_subnet(&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_subnet (&sr->that.client, &peerclient_str)); } }; |
| 582 | jam(buf, "PLUTO_XFRMI_FWMARK='' "); |
| 583 | } |
| 584 | } |
| 585 | jam(buf, "VTI_IFACE='%s' ", c->vti_iface ? c->vti_iface : ""); |
| 586 | jam(buf, "VTI_ROUTING='%s' ", bool_str(c->vti_routing)); |
| 587 | jam(buf, "VTI_SHARED='%s' ", bool_str(c->vti_shared)); |
| 588 | |
| 589 | if (sr->this.has_cat) { |
| 590 | jam(buf, "CAT='YES' "); |
| 591 | } |
| 592 | |
| 593 | jam(buf, "SPI_IN=0x%x SPI_OUT=0x%x " /* SPI_IN SPI_OUT */, |
| 594 | (st == NULL((void*)0) ? 0 : st->st_esp.present ? ntohl(st->st_esp.attrs.spi) : |
| 595 | st->st_ah.present ? ntohl(st->st_ah.attrs.spi) : |
| 596 | st->st_ipcomp.present ? ntohl(st->st_ipcomp.attrs.spi) : 0), |
| 597 | (st == NULL((void*)0) ? 0 : st->st_esp.present ? ntohl(st->st_esp.our_spi) : |
| 598 | st->st_ah.present ? ntohl(st->st_ah.our_spi) : |
| 599 | st->st_ipcomp.present ? ntohl(st->st_ipcomp.our_spi) : 0)); |
| 600 | } |
| 601 | |
| 602 | /* |
| 603 | * form the command string |
| 604 | * |
| 605 | * note: this mutates *st by calling fmt_traffic_str |
| 606 | */ |
| 607 | bool_Bool fmt_common_shell_out(char *buf, size_t blen, const struct connection *c, |
| 608 | const struct spd_route *sr, struct state *st) |
| 609 | { |
| 610 | /* |
| 611 | * note: this mutates *st by calling get_sa_info |
| 612 | * |
| 613 | * XXX: does the get_sa_info() call order matter? Should this |
| 614 | * be a single "atomic" call? |
| 615 | * |
| 616 | * true==inbound: inbound updates OUR_BYTES; !inbound updates |
| 617 | * PEER_BYTES. |
| 618 | */ |
| 619 | bool_Bool outbytes = st != NULL((void*)0) && get_sa_info(st, false0, NULL((void*)0)); |
| 620 | bool_Bool inbytes = st != NULL((void*)0) && get_sa_info(st, true1, NULL((void*)0)); |
| 621 | struct jambuf jambuf = array_as_jambuf(buf, blen); |
| 622 | jam_common_shell_out(&jambuf, c, sr, st, inbytes, outbytes); |
| 623 | return jambuf_ok(&jambuf); |
| 624 | } |
| 625 | |
| 626 | bool_Bool do_command(const struct connection *c, |
| 627 | const struct spd_route *sr, |
| 628 | const char *verb, |
| 629 | struct state *st) |
| 630 | { |
| 631 | const char *verb_suffix; |
| 632 | |
| 633 | /* |
| 634 | * Support for skipping updown, eg leftupdown="" |
| 635 | * Useful on busy servers that do not need to use updown for anything |
| 636 | */ |
| 637 | if (sr->this.updown == NULL((void*)0) || streq(sr->this.updown, "%disabled")(strcmp((sr->this.updown), ("%disabled")) == 0)) { |
| 638 | dbg("skipped updown %s command - disabled per policy", verb){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("skipped updown %s command - disabled per policy" , verb); } }; |
| 639 | return TRUE1; |
| 640 | } |
| 641 | dbg("running updown command \"%s\" for verb %s ", sr->this.updown, verb){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("running updown command \"%s\" for verb %s ", sr ->this.updown, verb); } }; |
| 642 | |
| 643 | /* |
| 644 | * Figure out which verb suffix applies. |
| 645 | * NOTE: this is a duplicate of code in mast_do_command_vs. |
| 646 | */ |
| 647 | { |
| 648 | const char *hs, *cs; |
| 649 | |
| 650 | switch (addrtypeof(&sr->this.host_addr)) { |
| 651 | case AF_INET2: |
| 652 | hs = "-host"; |
| 653 | cs = "-client"; |
| 654 | break; |
| 655 | case AF_INET610: |
| 656 | hs = "-host-v6"; |
| 657 | cs = "-client-v6"; |
| 658 | break; |
| 659 | default: |
| 660 | loglog(RC_LOG_SERIOUS, "unknown address family"); |
| 661 | return FALSE0; |
| 662 | } |
| 663 | verb_suffix = subnetisaddr(&sr->this.client,(subnetishost(&sr->this.client) && addrinsubnet ((&sr->this.host_addr), (&sr->this.client))) |
| 664 | &sr->this.host_addr)(subnetishost(&sr->this.client) && addrinsubnet ((&sr->this.host_addr), (&sr->this.client))) ? |
| 665 | hs : cs; |
| 666 | } |
| 667 | |
| 668 | dbg("command executing %s%s", verb, verb_suffix){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("command executing %s%s", verb, verb_suffix); } }; |
| 669 | |
| 670 | if (kernel_ops->docommand == NULL((void*)0)) { |
| 671 | dbg("no do_command for method %s", kernel_ops->kern_name){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("no do_command for method %s", kernel_ops-> kern_name); } }; |
| 672 | } else { |
| 673 | return (*kernel_ops->docommand)(c, sr, verb, verb_suffix, st); |
| 674 | } |
| 675 | return TRUE1; |
| 676 | } |
| 677 | |
| 678 | bool_Bool invoke_command(const char *verb, const char *verb_suffix, const char *cmd) |
| 679 | { |
| 680 | # define CHUNK_WIDTH 80 /* units for cmd logging */ |
| 681 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 682 | int slen = strlen(cmd); |
| 683 | int i; |
| 684 | |
| 685 | DBG_log("executing %s%s: %s", |
| 686 | verb, verb_suffix, cmd); |
| 687 | DBG_log("popen cmd is %d chars long", slen); |
| 688 | for (i = 0; i < slen; i += CHUNK_WIDTH) |
| 689 | DBG_log("cmd(%4d):%.*s:", i, |
| 690 | slen-i < CHUNK_WIDTH? slen-i : CHUNK_WIDTH, |
| 691 | &cmd[i]); |
| 692 | } |
| 693 | # undef CHUNK_WIDTH |
| 694 | |
| 695 | |
| 696 | { |
| 697 | /* |
| 698 | * invoke the script, catching stderr and stdout |
| 699 | * It may be of concern that some file descriptors will |
| 700 | * be inherited. For the ones under our control, we |
| 701 | * have done fcntl(fd, F_SETFD, FD_CLOEXEC) to prevent this. |
| 702 | * Any used by library routines (perhaps the resolver or |
| 703 | * syslog) will remain. |
| 704 | */ |
| 705 | FILE *f = popen(cmd, "r"); |
| 706 | |
| 707 | if (f == NULL((void*)0)) { |
| 708 | #ifdef HAVE_BROKEN_POPEN |
| 709 | /* |
| 710 | * See bug #1067 Angstrom Linux on a arm7 has no |
| 711 | * popen() |
| 712 | */ |
| 713 | if (errno(*__errno_location ()) == ENOSYS38) { |
| 714 | /* |
| 715 | * Try system(), though it will not give us |
| 716 | * output |
| 717 | */ |
| 718 | DBG_log("unable to popen(), falling back to system()"); |
| 719 | system(cmd); |
| 720 | return TRUE1; |
| 721 | } |
| 722 | #endif |
| 723 | loglog(RC_LOG_SERIOUS, "unable to popen %s%s command", |
| 724 | verb, verb_suffix); |
| 725 | return FALSE0; |
| 726 | } |
| 727 | |
| 728 | /* log any output */ |
| 729 | for (;; ) { |
| 730 | /* |
| 731 | * if response doesn't fit in this buffer, it will |
| 732 | * be folded |
| 733 | */ |
| 734 | char resp[256]; |
| 735 | |
| 736 | if (fgets(resp, sizeof(resp), f) == NULL((void*)0)) { |
| 737 | if (ferror(f)) { |
| 738 | LOG_ERRNO(errno, "fgets failed on output of %s%s command",{ int e_ = (*__errno_location ()); 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)) { jam(buf, "ERROR: "); jam_cur_prefix(buf); jam (buf, "fgets failed on output of %s%s command", verb, verb_suffix ); jam_string(buf, "."); jam(buf, " ""Errno %d: %s", (e_), strerror (e_)); jambuf_to_error_stream(buf); } } |
| 739 | verb, verb_suffix){ int e_ = (*__errno_location ()); 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)) { jam(buf, "ERROR: "); jam_cur_prefix(buf); jam (buf, "fgets failed on output of %s%s command", verb, verb_suffix ); jam_string(buf, "."); jam(buf, " ""Errno %d: %s", (e_), strerror (e_)); jambuf_to_error_stream(buf); } }; |
| 740 | pclose(f); |
| 741 | return FALSE0; |
| 742 | } else { |
| 743 | passert(feof(f)){ _Bool assertion__ = feof(f); if (!assertion__) { lsw_passert_fail ((where_t) { .func = __func__, .basename = "kernel.c" , .line = 743}, "%s", "feof(f)"); } }; |
| 744 | break; |
| 745 | } |
| 746 | } else { |
| 747 | char *e = resp + strlen(resp); |
| 748 | |
| 749 | if (e > resp && e[-1] == '\n') |
| 750 | e[-1] = '\0'; /* trim trailing '\n' */ |
| 751 | libreswan_log("%s%s output: %s", verb,loglog(RC_LOG, "%s%s output: %s", verb, verb_suffix, resp) |
| 752 | verb_suffix, resp)loglog(RC_LOG, "%s%s output: %s", verb, verb_suffix, resp); |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | /* report on and react to return code */ |
| 757 | { |
| 758 | int r = pclose(f); |
| 759 | |
| 760 | if (r == -1) { |
| 761 | LOG_ERRNO(errno, "pclose failed for %s%s command",{ int e_ = (*__errno_location ()); 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)) { jam(buf, "ERROR: "); jam_cur_prefix(buf); jam (buf, "pclose failed for %s%s command", verb, verb_suffix); jam_string (buf, "."); jam(buf, " ""Errno %d: %s", (e_), strerror(e_)); jambuf_to_error_stream (buf); } } |
| 762 | verb, verb_suffix){ int e_ = (*__errno_location ()); 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)) { jam(buf, "ERROR: "); jam_cur_prefix(buf); jam (buf, "pclose failed for %s%s command", verb, verb_suffix); jam_string (buf, "."); jam(buf, " ""Errno %d: %s", (e_), strerror(e_)); jambuf_to_error_stream (buf); } }; |
| 763 | return FALSE0; |
| 764 | } else if (WIFEXITED(r)(((r) & 0x7f) == 0)) { |
| 765 | if (WEXITSTATUS(r)(((r) & 0xff00) >> 8) != 0) { |
| 766 | loglog(RC_LOG_SERIOUS, |
| 767 | "%s%s command exited with status %d", |
| 768 | verb, verb_suffix, |
| 769 | WEXITSTATUS(r)(((r) & 0xff00) >> 8)); |
| 770 | return FALSE0; |
| 771 | } |
| 772 | } else if (WIFSIGNALED(r)(((signed char) (((r) & 0x7f) + 1) >> 1) > 0)) { |
| 773 | loglog(RC_LOG_SERIOUS, |
| 774 | "%s%s command exited with signal %d", |
| 775 | verb, verb_suffix, WTERMSIG(r)((r) & 0x7f)); |
| 776 | return FALSE0; |
| 777 | } else { |
| 778 | loglog(RC_LOG_SERIOUS, |
| 779 | "%s%s command exited with unknown status %d", |
| 780 | verb, verb_suffix, r); |
| 781 | return FALSE0; |
| 782 | } |
| 783 | } |
| 784 | } |
| 785 | return TRUE1; |
| 786 | } |
| 787 | |
| 788 | /* Check that we can route (and eroute). Diagnose if we cannot. */ |
| 789 | |
| 790 | enum routability { |
| 791 | route_impossible, |
| 792 | route_easy, |
| 793 | route_nearconflict, |
| 794 | route_farconflict, |
| 795 | route_unnecessary |
| 796 | }; |
| 797 | |
| 798 | /* |
| 799 | * handle co-terminal attempt of the "near" kind |
| 800 | * |
| 801 | * Note: it mutates both inside and outside |
| 802 | */ |
| 803 | static enum routability note_nearconflict( |
| 804 | struct connection *outside, /* CK_PERMANENT */ |
| 805 | struct connection *inside) /* CK_TEMPLATE */ |
| 806 | { |
| 807 | char inst[CONN_INST_BUF(2 + 10 + 1 + sizeof(subnet_buf) + 7 + sizeof(address_reversed_buf ) + 3 + sizeof(subnet_buf) + 1 + 1)]; |
| 808 | |
| 809 | /* |
| 810 | * this is a co-terminal attempt of the "near" kind. |
| 811 | * when chaining, we chain from inside to outside |
| 812 | * |
| 813 | * XXX permit multiple deep connections? |
| 814 | */ |
| 815 | passert(inside->policy_next == NULL){ _Bool assertion__ = inside->policy_next == ((void*)0); if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 815}, "%s", "inside->policy_next == NULL" ); } }; |
| 816 | |
| 817 | inside->policy_next = outside; |
| 818 | |
| 819 | /* |
| 820 | * since we are going to steal the eroute from the secondary |
| 821 | * policy, we need to make sure that it no longer thinks that |
| 822 | * it owns the eroute. |
| 823 | */ |
| 824 | outside->spd.eroute_owner = SOS_NOBODY0; |
| 825 | outside->spd.routing = RT_UNROUTED_KEYED; |
| 826 | |
| 827 | /* |
| 828 | * set the priority of the new eroute owner to be higher |
| 829 | * than that of the current eroute owner |
| 830 | */ |
| 831 | inside->prio = outside->prio + 1; |
| 832 | |
| 833 | loglog(RC_LOG_SERIOUS, |
| 834 | "conflict on eroute (%s), switching eroute to %s and linking %s", |
| 835 | fmt_conn_instance(inside, inst), |
| 836 | inside->name, outside->name); |
| 837 | |
| 838 | return route_nearconflict; |
| 839 | } |
| 840 | |
| 841 | /* |
| 842 | * Note: this may mutate c |
| 843 | */ |
| 844 | static enum routability could_route(struct connection *c, struct logger *logger) |
| 845 | { |
| 846 | dbg("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u" , c->name, enum_show(&connection_kind_names, c->kind ), bool_str(c->spd.that.has_client), bool_str(c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))), c-> spd.this.host_port); } } |
| 847 | c->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u" , c->name, enum_show(&connection_kind_names, c->kind ), bool_str(c->spd.that.has_client), bool_str(c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))), c-> spd.this.host_port); } } |
| 848 | enum_show(&connection_kind_names, c->kind),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u" , c->name, enum_show(&connection_kind_names, c->kind ), bool_str(c->spd.that.has_client), bool_str(c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))), c-> spd.this.host_port); } } |
| 849 | bool_str(c->spd.that.has_client),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u" , c->name, enum_show(&connection_kind_names, c->kind ), bool_str(c->spd.that.has_client), bool_str(c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))), c-> spd.this.host_port); } } |
| 850 | bool_str(c->policy & POLICY_OPPORTUNISTIC),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u" , c->name, enum_show(&connection_kind_names, c->kind ), bool_str(c->spd.that.has_client), bool_str(c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))), c-> spd.this.host_port); } } |
| 851 | c->spd.this.host_port){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("could_route called for %s; kind=%s that.has_client=%s oppo=%s this.host_port=%u" , c->name, enum_show(&connection_kind_names, c->kind ), bool_str(c->spd.that.has_client), bool_str(c->policy & ((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))), c-> spd.this.host_port); } }; |
| 852 | |
| 853 | /* it makes no sense to route a connection that is ISAKMP-only */ |
| 854 | 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)) { |
| 855 | log_message(RC_ROUTE, logger, |
| 856 | "cannot route an ISAKMP-only connection"); |
| 857 | return route_impossible; |
| 858 | } |
| 859 | |
| 860 | /* |
| 861 | * if this is a transport SA, and overlapping SAs are supported, then |
| 862 | * this route is not necessary at all. |
| 863 | */ |
| 864 | if (kernel_ops->overlap_supported && !LIN(POLICY_TUNNEL, c->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy )) == (((lset_t)1 << (POLICY_TUNNEL_IX))))) |
| 865 | return route_unnecessary; |
| 866 | |
| 867 | /* |
| 868 | * if this is a Road Warrior template, we cannot route. |
| 869 | * Opportunistic template is OK. |
| 870 | */ |
| 871 | if (!c->spd.that.has_client && |
| 872 | c->kind == CK_TEMPLATE && |
| 873 | !(c->policy & POLICY_OPPORTUNISTIC((lset_t)1 << (POLICY_OPPORTUNISTIC_IX)))) { |
| 874 | log_message(RC_ROUTE, logger, |
| 875 | "cannot route template policy of %s", |
| 876 | prettypolicy(c->policy)); |
| 877 | return route_impossible; |
| 878 | } |
| 879 | |
| 880 | /* if routing would affect IKE messages, reject */ |
| 881 | if (c->spd.this.host_port != NAT_IKE_UDP_PORT4500 && |
| 882 | c->spd.this.host_port != IKE_UDP_PORT500 && |
| 883 | addrinsubnet(&c->spd.that.host_addr, &c->spd.that.client)) { |
| 884 | log_message(RC_LOG_SERIOUS, logger, |
| 885 | "cannot install route: peer is within its client"); |
| 886 | return route_impossible; |
| 887 | } |
| 888 | |
| 889 | struct spd_route *esr, *rosr; |
| 890 | struct connection *ero, /* who, if anyone, owns our eroute? */ |
| 891 | *ro = route_owner(c, &c->spd, &rosr, &ero, &esr); /* who owns our route? */ |
| 892 | |
| 893 | /* |
| 894 | * If there is already a route for peer's client subnet |
| 895 | * and it disagrees about interface or nexthop, we cannot steal it. |
| 896 | * Note: if this connection is already routed (perhaps for another |
| 897 | * state object), the route will agree. |
| 898 | * This is as it should be -- it will arise during rekeying. |
| 899 | */ |
| 900 | 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))) { |
| 901 | |
| 902 | if (!compatible_overlapping_connections(c, ero)) { |
| 903 | /* |
| 904 | * Another connection is already using the eroute. |
| 905 | * TODO: XFRM can do this? For now excempt OE only |
| 906 | */ |
| 907 | if ((c->policy & POLICY_OPPORTUNISTIC((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))) == LEMPTY((lset_t)0)) { |
| 908 | connection_buf cib; |
| 909 | log_message(RC_LOG_SERIOUS, logger, |
| 910 | "cannot route -- route already in use for "PRI_CONNECTION"\"%s\"%s""", |
| 911 | pri_connection(ro, &cib)(ro)->name, str_connection_instance(ro, &cib)); |
| 912 | return route_impossible; |
| 913 | } else { |
| 914 | connection_buf cib; |
| 915 | log_message(RC_LOG_SERIOUS, logger, |
| 916 | "cannot route -- route already in use for "PRI_CONNECTION"\"%s\"%s"" - but allowing anyway", |
| 917 | pri_connection(ro, &cib)(ro)->name, str_connection_instance(ro, &cib)); |
| 918 | } |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | |
| 923 | /* if there is an eroute for another connection, there is a problem */ |
| 924 | if (ero != NULL((void*)0) && ero != c) { |
| 925 | /* |
| 926 | * note, wavesec (PERMANENT) goes *outside* and |
| 927 | * OE goes *inside* (TEMPLATE) |
| 928 | */ |
| 929 | if (ero->kind == CK_PERMANENT && |
| 930 | c->kind == CK_TEMPLATE) { |
| 931 | return note_nearconflict(ero, c); |
| 932 | } else if (c->kind == CK_PERMANENT && |
| 933 | ero->kind == CK_TEMPLATE) { |
| 934 | return note_nearconflict(c, ero); |
| 935 | } |
| 936 | |
| 937 | /* look along the chain of policies for one with the same name */ |
| 938 | |
| 939 | for (struct connection *ep = ero; ep != NULL((void*)0); ep = ero->policy_next) { |
| 940 | if (ep->kind == CK_TEMPLATE && |
| 941 | streq(ep->name, c->name)(strcmp((ep->name), (c->name)) == 0)) |
| 942 | return route_easy; |
| 943 | } |
| 944 | |
| 945 | /* |
| 946 | * If we fell off the end of the list, then we found no |
| 947 | * TEMPLATE so there must be a conflict that we can't resolve. |
| 948 | * As the names are not equal, then we aren't |
| 949 | * replacing/rekeying. |
| 950 | * |
| 951 | * ??? should there not be a conflict if ANYTHING in the list, |
| 952 | * other than c, conflicts with c? |
| 953 | */ |
| 954 | |
| 955 | if (LDISJOINT(POLICY_OVERLAPIP, c->policy | ero->policy)(((((lset_t)1 << (POLICY_OVERLAPIP_IX))) & (c->policy | ero->policy)) == ((lset_t)0))) { |
| 956 | /* |
| 957 | * another connection is already using the eroute, |
| 958 | * TODO: XFRM apparently can do this though |
| 959 | */ |
| 960 | connection_buf erob; |
| 961 | log_message(RC_LOG_SERIOUS, logger, |
| 962 | "cannot install eroute -- it is in use for "PRI_CONNECTION"\"%s\"%s"" #%lu", |
| 963 | pri_connection(ero, &erob)(ero)->name, str_connection_instance(ero, &erob), esr->eroute_owner); |
| 964 | return route_impossible; |
| 965 | } |
| 966 | |
| 967 | connection_buf erob; |
| 968 | dbg("overlapping permitted with "PRI_CONNECTION" #%lu",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("overlapping permitted with ""\"%s\"%s"" #%lu" , (ero)->name, str_connection_instance(ero, &erob), esr ->eroute_owner); } } |
| 969 | pri_connection(ero, &erob), esr->eroute_owner){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("overlapping permitted with ""\"%s\"%s"" #%lu" , (ero)->name, str_connection_instance(ero, &erob), esr ->eroute_owner); } }; |
| 970 | } |
| 971 | return route_easy; |
| 972 | } |
| 973 | |
| 974 | bool_Bool trap_connection(struct connection *c, struct fd *whackfd) |
| 975 | { |
| 976 | struct logger logger = CONNECTION_LOGGER(c, whackfd)(struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 976}, .global_whackfd = whackfd, .object = c, .object_vec = &logger_connection_vec, }; |
| 977 | enum routability r = could_route(c, &logger); |
| 978 | |
| 979 | switch (r) { |
| 980 | case route_impossible: |
| 981 | return FALSE0; |
| 982 | |
| 983 | case route_easy: |
| 984 | case route_nearconflict: |
| 985 | /* |
| 986 | * RT_ROUTED_TUNNEL is treated specially: we don't override |
| 987 | * because we don't want to lose track of the IPSEC_SAs etc. |
| 988 | * ??? The test treats RT_UNROUTED_KEYED specially too. |
| 989 | */ |
| 990 | if (c->spd.routing < RT_ROUTED_TUNNEL) |
| 991 | return route_and_eroute(c, &c->spd, NULL((void*)0)); |
| 992 | |
| 993 | return TRUE1; |
| 994 | |
| 995 | case route_farconflict: |
| 996 | return FALSE0; |
| 997 | |
| 998 | case route_unnecessary: |
| 999 | return TRUE1; |
| 1000 | default: |
| 1001 | bad_case(r)libreswan_bad_case("r", (r), (where_t) { .func = __func__, .basename = "kernel.c" , .line = 1001}); |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * Add/replace/delete a shunt eroute. |
| 1007 | * |
| 1008 | * Such an eroute determines the fate of packets without the use |
| 1009 | * of any SAs. These are defaults, in effect. |
| 1010 | * If a negotiation has not been attempted, use %trap. |
| 1011 | * If negotiation has failed, the choice between %trap/%pass/%drop/%reject |
| 1012 | * is specified in the policy of connection c. |
| 1013 | */ |
| 1014 | static bool_Bool shunt_eroute(const struct connection *c, |
| 1015 | const struct spd_route *sr, |
| 1016 | enum routing_t rt_kind, |
| 1017 | enum pluto_sadb_operations op, |
| 1018 | const char *opname) |
| 1019 | { |
| 1020 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 1021 | selector_buf thisb, thatb; |
| 1022 | DBG_log("shunt_eroute() called for connection '%s' to '%s' for rt_kind '%s' using protoports %s --%d->- %s", |
| 1023 | c->name, opname, enum_name(&routing_story, rt_kind), |
| 1024 | str_selector(&sr->this.client, &thisb), |
| 1025 | sr->this.protocol, |
| 1026 | str_selector(&sr->that.client, &thatb)); |
| 1027 | } |
| 1028 | |
| 1029 | if (kernel_ops->shunt_eroute != NULL((void*)0)) { |
| 1030 | return kernel_ops->shunt_eroute(c, sr, rt_kind, op, opname); |
| 1031 | } |
| 1032 | |
| 1033 | loglog(RC_COMMENT, "no shunt_eroute implemented for %s interface", |
| 1034 | kernel_ops->kern_name); |
| 1035 | return TRUE1; |
| 1036 | } |
| 1037 | |
| 1038 | static bool_Bool sag_eroute(const struct state *st, |
| 1039 | const struct spd_route *sr, |
| 1040 | enum pluto_sadb_operations op, |
| 1041 | const char *opname) |
| 1042 | { |
| 1043 | pexpect(kernel_ops->sag_eroute != NULL)({ _Bool assertion__ = kernel_ops->sag_eroute != ((void*)0 ); if (!assertion__) { log_pexpect((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 1043}, "%s", "kernel_ops->sag_eroute != NULL" ); } assertion__; }); |
| 1044 | if (kernel_ops->sag_eroute != NULL((void*)0)) |
| 1045 | return kernel_ops->sag_eroute(st, sr, op, opname); |
| 1046 | |
| 1047 | return FALSE0; |
| 1048 | } |
| 1049 | |
| 1050 | void migration_up(struct connection *c, struct state *st) |
| 1051 | { |
| 1052 | for (struct spd_route *sr = &c->spd; sr != NULL((void*)0); sr = sr->spd_next) { |
| 1053 | #ifdef IPSEC_CONNECTION_LIMIT |
| 1054 | num_ipsec_eroute++; |
| 1055 | #endif |
| 1056 | sr->routing = RT_ROUTED_TUNNEL; /* do now so route_owner won't find us */ |
| 1057 | (void) do_command(c, sr, "up", st); |
| 1058 | (void) do_command(c, sr, "route", st); |
| 1059 | } |
| 1060 | } |
| 1061 | |
| 1062 | void migration_down(struct connection *c, struct state *st) |
| 1063 | { |
| 1064 | for (struct spd_route *sr = &c->spd; sr != NULL((void*)0); sr = sr->spd_next) { |
| 1065 | enum routing_t cr = sr->routing; |
| 1066 | |
| 1067 | #ifdef IPSEC_CONNECTION_LIMIT |
| 1068 | if (erouted(cr)((cr) != RT_UNROUTED)) |
| 1069 | num_ipsec_eroute--; |
| 1070 | #endif |
| 1071 | |
| 1072 | sr->routing = RT_UNROUTED; /* do now so route_owner won't find us */ |
| 1073 | |
| 1074 | /* only unroute if no other connection shares it */ |
| 1075 | if (routed(cr)((cr) > RT_UNROUTED_HOLD) && route_owner(c, sr, NULL((void*)0), NULL((void*)0), NULL((void*)0)) == NULL((void*)0)) { |
| 1076 | (void) do_command(c, sr, "down", st); |
| 1077 | st->st_mobike_del_src_ip = true1; |
| 1078 | (void) do_command(c, sr, "unroute", st); |
| 1079 | st->st_mobike_del_src_ip = false0; |
| 1080 | } |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | /* delete any eroute for a connection and unroute it if route isn't shared */ |
| 1086 | void unroute_connection(struct connection *c) |
| 1087 | { |
| 1088 | for (struct spd_route *sr = &c->spd; sr != NULL((void*)0); sr = sr->spd_next) { |
| 1089 | enum routing_t cr = sr->routing; |
| 1090 | |
| 1091 | if (erouted(cr)((cr) != RT_UNROUTED)) { |
| 1092 | /* cannot handle a live one */ |
| 1093 | passert(cr != RT_ROUTED_TUNNEL){ _Bool assertion__ = cr != RT_ROUTED_TUNNEL; if (!assertion__ ) { lsw_passert_fail((where_t) { .func = __func__, .basename = "kernel.c" , .line = 1093}, "%s", "cr != RT_ROUTED_TUNNEL"); } }; |
| 1094 | shunt_eroute(c, sr, RT_UNROUTED, ERO_DELETE, "delete"); |
| 1095 | #ifdef IPSEC_CONNECTION_LIMIT |
| 1096 | num_ipsec_eroute--; |
| 1097 | #endif |
| 1098 | } |
| 1099 | |
| 1100 | sr->routing = RT_UNROUTED; /* do now so route_owner won't find us */ |
| 1101 | |
| 1102 | /* only unroute if no other connection shares it */ |
| 1103 | if (routed(cr)((cr) > RT_UNROUTED_HOLD) && route_owner(c, sr, NULL((void*)0), NULL((void*)0), NULL((void*)0)) == NULL((void*)0)) |
| 1104 | (void) do_command(c, sr, "unroute", NULL((void*)0)); |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | #include "kernel_alg.h" |
| 1109 | |
| 1110 | void set_text_said(char *text_said, const ip_address *dst, |
| 1111 | ipsec_spi_t spi, const struct ip_protocol *sa_proto) |
| 1112 | { |
| 1113 | ip_said said = said3(dst, spi, sa_proto); |
| 1114 | struct jambuf jam = array_as_jambuf(text_said, SATOT_BUFsizeof(said_buf)); |
| 1115 | jam_said(&jam, &said); |
| 1116 | } |
| 1117 | |
| 1118 | /* find an entry in the bare_shunt table. |
| 1119 | * Trick: return a pointer to the pointer to the entry; |
| 1120 | * this allows the entry to be deleted. |
| 1121 | */ |
| 1122 | struct bare_shunt **bare_shunt_ptr(const ip_selector *our_client, |
| 1123 | const ip_selector *peer_client, |
| 1124 | int transport_proto) |
| 1125 | |
| 1126 | { |
| 1127 | struct bare_shunt *p, **pp; |
| 1128 | |
| 1129 | for (pp = &bare_shunts; (p = *pp) != NULL((void*)0); pp = &p->next) { |
| 1130 | if (transport_proto == p->transport_proto && |
| 1131 | selector_eq(our_client, &p->our_client) && |
| 1132 | selector_eq(peer_client, &p->peer_client)) { |
| 1133 | return pp; |
| 1134 | } |
| 1135 | } |
| 1136 | return NULL((void*)0); |
| 1137 | } |
| 1138 | |
| 1139 | /* free a bare_shunt entry, given a pointer to the pointer */ |
| 1140 | static void free_bare_shunt(struct bare_shunt **pp) |
| 1141 | { |
| 1142 | struct bare_shunt *p; |
| 1143 | |
| 1144 | passert(pp != NULL){ _Bool assertion__ = pp != ((void*)0); if (!assertion__) { lsw_passert_fail ((where_t) { .func = __func__, .basename = "kernel.c" , .line = 1144}, "%s", "pp != NULL"); } }; |
| 1145 | |
| 1146 | p = *pp; |
| 1147 | |
| 1148 | *pp = p->next; |
| 1149 | dbg_bare_shunt("delete", p); |
| 1150 | pfreeany(p->from_cn){ typeof(p->from_cn) *pp_ = &(p->from_cn); if (*pp_ != ((void*)0)) { pfree(*pp_); *pp_ = ((void*)0); } }; |
| 1151 | pfree(p); |
| 1152 | } |
| 1153 | |
| 1154 | unsigned shunt_count(void) |
| 1155 | { |
| 1156 | unsigned i = 0; |
| 1157 | |
| 1158 | for (const struct bare_shunt *bs = bare_shunts; bs != NULL((void*)0); bs = bs->next) |
| 1159 | { |
| 1160 | i++; |
| 1161 | } |
| 1162 | |
| 1163 | return i; |
| 1164 | } |
| 1165 | |
| 1166 | void show_shunt_status(struct show *s) |
| 1167 | { |
| 1168 | show_separator(s); |
| 1169 | show_comment(s, "Bare Shunt list:"); |
| 1170 | show_separator(s); |
| 1171 | |
| 1172 | for (const struct bare_shunt *bs = bare_shunts; bs != NULL((void*)0); bs = bs->next) { |
| 1173 | /* Print interesting fields. Ignore count and last_active. */ |
| 1174 | selector_buf ourb; |
| 1175 | selector_buf peerb; |
| 1176 | said_buf sat; |
| 1177 | |
| 1178 | char prio[POLICY_PRIO_BUF(3 + 1 + 3 + 1 + 10)]; |
| 1179 | fmt_policy_prio(bs->policy_prio, prio); |
| 1180 | |
| 1181 | show_comment(s, "%s -%d-> %s => %s %s %s", |
| 1182 | str_selector(&(bs)->our_client, &ourb), |
| 1183 | bs->transport_proto, |
| 1184 | str_selector(&(bs)->peer_client, &peerb), |
| 1185 | str_said(&(bs)->said, &sat), |
| 1186 | prio, bs->why); |
| 1187 | } |
| 1188 | } |
| 1189 | |
| 1190 | /* Setup an IPsec route entry. |
| 1191 | * op is one of the ERO_* operators. |
| 1192 | */ |
| 1193 | |
| 1194 | // should be made static again once we fix initiate.c calling this directly! |
| 1195 | bool_Bool raw_eroute(const ip_address *this_host, |
| 1196 | const ip_subnet *this_client, |
| 1197 | const ip_address *that_host, |
| 1198 | const ip_subnet *that_client, |
| 1199 | ipsec_spi_t cur_spi, |
| 1200 | ipsec_spi_t new_spi, |
| 1201 | const struct ip_protocol *sa_proto, |
| 1202 | unsigned int transport_proto, |
| 1203 | enum eroute_type esatype, |
| 1204 | const struct pfkey_proto_info *proto_info, |
| 1205 | deltatime_t use_lifetime, |
| 1206 | uint32_t sa_priority, |
| 1207 | const struct sa_marks *sa_marks, |
| 1208 | const uint32_t xfrm_if_id, |
| 1209 | enum pluto_sadb_operations op, |
| 1210 | const char *opname, |
| 1211 | const char *policy_label) |
| 1212 | { |
| 1213 | char text_said[SATOT_BUFsizeof(said_buf) + SATOT_BUFsizeof(said_buf)]; |
| 1214 | |
| 1215 | switch (op) { |
| 1216 | case ERO_ADD: |
| 1217 | case ERO_ADD_INBOUND: |
| 1218 | set_text_said(text_said, that_host, new_spi, sa_proto); |
| 1219 | break; |
| 1220 | case ERO_DELETE: |
| 1221 | case ERO_DEL_INBOUND: |
| 1222 | set_text_said(text_said, that_host, cur_spi, sa_proto); |
| 1223 | break; |
| 1224 | case ERO_REPLACE: |
| 1225 | case ERO_REPLACE_INBOUND: |
| 1226 | { |
| 1227 | size_t w; |
| 1228 | |
| 1229 | set_text_said(text_said, that_host, cur_spi, sa_proto); |
| 1230 | w = strlen(text_said); |
| 1231 | text_said[w] = '>'; |
| 1232 | set_text_said(text_said + w + 1, that_host, new_spi, sa_proto); |
| 1233 | break; |
| 1234 | } |
| 1235 | default: |
| 1236 | bad_case(op)libreswan_bad_case("op", (op), (where_t) { .func = __func__, . basename = "kernel.c" , .line = 1236}); |
| 1237 | } |
| 1238 | |
| 1239 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 1240 | selector_buf mybuf; |
| 1241 | selector_buf peerbuf; |
| 1242 | DBG_log("%s eroute %s --%d-> %s => %s using reqid %d (raw_eroute) proto=%d", |
| 1243 | opname, |
| 1244 | str_selector(this_client, &mybuf), |
| 1245 | transport_proto, |
| 1246 | str_selector(that_client, &peerbuf), |
| 1247 | text_said, |
| 1248 | proto_info->reqid, |
| 1249 | proto_info->proto); |
| 1250 | |
| 1251 | if (policy_label != NULL((void*)0)) |
| 1252 | DBG_log("policy security label %s", |
| 1253 | policy_label); |
| 1254 | } |
| 1255 | |
| 1256 | bool_Bool result = kernel_ops->raw_eroute(this_host, this_client, |
| 1257 | that_host, that_client, |
| 1258 | cur_spi, new_spi, sa_proto, |
| 1259 | transport_proto, |
| 1260 | esatype, proto_info, |
| 1261 | use_lifetime, sa_priority, sa_marks, |
| 1262 | xfrm_if_id, op, text_said, |
| 1263 | policy_label); |
| 1264 | dbg("raw_eroute result=%s", result ? "success" : "failed"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("raw_eroute result=%s", result ? "success" : "failed" ); } }; |
| 1265 | |
| 1266 | return result; |
| 1267 | } |
| 1268 | |
| 1269 | /* |
| 1270 | * Clear any bare shunt holds that overlap with the network we have |
| 1271 | * just routed. We only consider "narrow" holds: ones for a single |
| 1272 | * address to single address. |
| 1273 | */ |
| 1274 | static void clear_narrow_holds(const ip_selector *our_client, |
| 1275 | const ip_selector *peer_client, |
| 1276 | int transport_proto) |
| 1277 | { |
| 1278 | struct bare_shunt *p, **pp; |
| 1279 | |
| 1280 | for (pp = &bare_shunts; (p = *pp) != NULL((void*)0); ) { |
| 1281 | /* |
| 1282 | * is p->{local,remote} within {local,remote}. |
| 1283 | */ |
| 1284 | if (p->said.spi == htonl(SPI_HOLD259) && |
| 1285 | transport_proto == p->transport_proto && |
| 1286 | selector_in_selector(&p->our_client, our_client) && |
| 1287 | selector_in_selector(&p->peer_client, peer_client)) { |
| 1288 | if (!delete_bare_shunt(&p->our_client.addr, &p->peer_client.addr, |
| 1289 | transport_proto, SPI_HOLD259, |
| 1290 | "removing clashing narrow hold")) { |
| 1291 | /* ??? we could not delete a bare shunt */ |
| 1292 | log_bare_shunt(RC_LOG, "failed to delete", p); |
| 1293 | break; /* unlikely to succeed a second time */ |
| 1294 | } else if (*pp == p) { |
| 1295 | /* |
| 1296 | * ??? We deleted the wrong bare shunt! |
| 1297 | * This happened because more than one entry |
| 1298 | * matched and we happened to delete a |
| 1299 | * different one. |
| 1300 | * Log it! And keep deleting. |
| 1301 | */ |
| 1302 | log_bare_shunt(RC_LOG, "UNEXPECTEDLY SURVIVING", p); |
| 1303 | pp = &bare_shunts; /* just in case, start over */ |
| 1304 | } |
| 1305 | /* |
| 1306 | * ??? if we were sure that there could only be one |
| 1307 | * matching entry, we could break out of the FOR. |
| 1308 | * For an unknown reason this is not always the case, |
| 1309 | * so we will continue the loop, with pp unchanged. |
| 1310 | */ |
| 1311 | } else { |
| 1312 | pp = &p->next; |
| 1313 | } |
| 1314 | } |
| 1315 | } |
| 1316 | |
| 1317 | /* |
| 1318 | * Replace (or delete) a shunt that is in the bare_shunts table. |
| 1319 | * Issues the PF_KEY commands and updates the bare_shunts table. |
| 1320 | */ |
| 1321 | static bool_Bool fiddle_bare_shunt(const ip_address *src, const ip_address *dst, |
| 1322 | policy_prio_t policy_prio, /* of replacing shunt*/ |
| 1323 | ipsec_spi_t cur_shunt_spi, /* in host order! */ |
| 1324 | ipsec_spi_t new_shunt_spi, /* in host order! */ |
| 1325 | bool_Bool repl, /* if TRUE, replace; if FALSE, delete */ |
| 1326 | int transport_proto, |
| 1327 | const char *why) |
| 1328 | { |
| 1329 | ip_subnet this_client, that_client; |
| 1330 | const ip_address null_host = address_any(address_type(src)); |
| 1331 | |
| 1332 | dbg("fiddle_bare_shunt called"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("fiddle_bare_shunt called"); } }; |
| 1333 | |
| 1334 | passert(addrtypeof(src) == addrtypeof(dst)){ _Bool assertion__ = addrtypeof(src) == addrtypeof(dst); if ( !assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 1334}, "%s", "addrtypeof(src) == addrtypeof(dst)" ); } }; |
| 1335 | happy(endtosubnet(src, &this_client, HERE)){ err_t ugh = endtosubnet(src, &this_client, (where_t) { . func = __func__, .basename = "kernel.c" , .line = 1335}); if ( ugh != ((void*)0)) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 1335}, "%s", ugh); } }; |
| 1336 | happy(endtosubnet(dst, &that_client, HERE)){ err_t ugh = endtosubnet(dst, &that_client, (where_t) { . func = __func__, .basename = "kernel.c" , .line = 1336}); if ( ugh != ((void*)0)) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 1336}, "%s", ugh); } }; |
| 1337 | |
| 1338 | /* |
| 1339 | * ??? this comment might be obsolete. |
| 1340 | * If the transport protocol is not the wildcard (0), then we need |
| 1341 | * to look for a host<->host shunt, and replace that with the |
| 1342 | * shunt spi, and then we add a %HOLD for what was there before. |
| 1343 | * |
| 1344 | * This is at odds with !repl, which should delete things. |
| 1345 | * |
| 1346 | */ |
| 1347 | |
| 1348 | dbg("fiddle_bare_shunt with transport_proto %d", transport_proto){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("fiddle_bare_shunt with transport_proto %d", transport_proto ); } }; |
| 1349 | |
| 1350 | enum pluto_sadb_operations op = repl ? ERO_REPLACE : ERO_DELETE; |
| 1351 | |
| 1352 | dbg("%s specific host-to-host bare shunt", repl ? "replacing" : "removing"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s specific host-to-host bare shunt", repl ? "replacing" : "removing"); } }; |
| 1353 | if (kernel_ops->type == USE_XFRM && strstr(why, "IGNORE_ON_XFRM:") != NULL((void*)0)) { |
| 1354 | dbg("skipping raw_eroute because IGNORE_ON_XFRM"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("skipping raw_eroute because IGNORE_ON_XFRM"); } }; |
| 1355 | struct bare_shunt **bs_pp = bare_shunt_ptr( |
| 1356 | &this_client, |
| 1357 | &that_client, |
| 1358 | transport_proto); |
| 1359 | |
| 1360 | free_bare_shunt(bs_pp); |
| 1361 | libreswan_log("raw_eroute() to op='%s' with transport_proto='%d' kernel shunt skipped - deleting from pluto shunt table",loglog(RC_LOG, "raw_eroute() to op='%s' with transport_proto='%d' kernel shunt skipped - deleting from pluto shunt table" , repl ? "replace" : "delete", transport_proto) |
| 1362 | repl ? "replace" : "delete",loglog(RC_LOG, "raw_eroute() to op='%s' with transport_proto='%d' kernel shunt skipped - deleting from pluto shunt table" , repl ? "replace" : "delete", transport_proto) |
| 1363 | transport_proto)loglog(RC_LOG, "raw_eroute() to op='%s' with transport_proto='%d' kernel shunt skipped - deleting from pluto shunt table" , repl ? "replace" : "delete", transport_proto); |
| 1364 | return TRUE1; |
| 1365 | } else if (raw_eroute(&null_host, &this_client, |
| 1366 | &null_host, &that_client, |
| 1367 | htonl(cur_shunt_spi), |
| 1368 | htonl(new_shunt_spi), |
| 1369 | &ip_protocol_internal, transport_proto, |
| 1370 | ET_INT, null_proto_info, |
| 1371 | deltatime(SHUNT_PATIENCE((2 * 10) * 15 / 2)), |
| 1372 | 0, /* we don't know connection for priority yet */ |
| 1373 | NULL((void*)0), /* sa_marks */ |
| 1374 | 0 /* xfrm interface id */, |
| 1375 | |
| 1376 | op, why, NULL((void*)0))) |
| 1377 | { |
| 1378 | struct bare_shunt **bs_pp = bare_shunt_ptr( |
| 1379 | &this_client, |
| 1380 | &that_client, |
| 1381 | transport_proto); |
| 1382 | |
| 1383 | dbg("raw_eroute with op='%s' for transport_proto='%d' kernel shunt succeeded, bare shunt lookup %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("raw_eroute with op='%s' for transport_proto='%d' kernel shunt succeeded, bare shunt lookup %s" , repl ? "replace" : "delete", transport_proto, (bs_pp == ((void *)0)) ? "failed" : "succeeded"); } } |
| 1384 | repl ? "replace" : "delete", transport_proto,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("raw_eroute with op='%s' for transport_proto='%d' kernel shunt succeeded, bare shunt lookup %s" , repl ? "replace" : "delete", transport_proto, (bs_pp == ((void *)0)) ? "failed" : "succeeded"); } } |
| 1385 | (bs_pp == NULL) ? "failed" : "succeeded"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("raw_eroute with op='%s' for transport_proto='%d' kernel shunt succeeded, bare shunt lookup %s" , repl ? "replace" : "delete", transport_proto, (bs_pp == ((void *)0)) ? "failed" : "succeeded"); } }; |
| 1386 | |
| 1387 | /* we can have proto mismatching acquires with xfrm - this is a bad workaround */ |
| 1388 | /* ??? what is the nature of those mismatching acquires? */ |
| 1389 | /* passert(bs_pp != NULL); */ |
| 1390 | if (bs_pp == NULL((void*)0)) { |
| 1391 | ipstr_buf srcb, dstb; |
| 1392 | |
| 1393 | libreswan_log("can't find expected bare shunt to %s: %s->%s transport_proto='%d'",loglog(RC_LOG, "can't find expected bare shunt to %s: %s->%s transport_proto='%d'" , repl ? "replace" : "delete", ipstr(src, &srcb), ipstr(dst , &dstb), transport_proto) |
| 1394 | repl ? "replace" : "delete",loglog(RC_LOG, "can't find expected bare shunt to %s: %s->%s transport_proto='%d'" , repl ? "replace" : "delete", ipstr(src, &srcb), ipstr(dst , &dstb), transport_proto) |
| 1395 | ipstr(src, &srcb), ipstr(dst, &dstb),loglog(RC_LOG, "can't find expected bare shunt to %s: %s->%s transport_proto='%d'" , repl ? "replace" : "delete", ipstr(src, &srcb), ipstr(dst , &dstb), transport_proto) |
| 1396 | transport_proto)loglog(RC_LOG, "can't find expected bare shunt to %s: %s->%s transport_proto='%d'" , repl ? "replace" : "delete", ipstr(src, &srcb), ipstr(dst , &dstb), transport_proto); |
| 1397 | return TRUE1; |
| 1398 | } |
| 1399 | |
| 1400 | if (repl) { |
| 1401 | /* |
| 1402 | * change over to new bare eroute |
| 1403 | * ours, peers, transport_proto are the same. |
| 1404 | */ |
| 1405 | struct bare_shunt *bs = *bs_pp; |
| 1406 | |
| 1407 | bs->why = why; |
| 1408 | bs->policy_prio = policy_prio; |
| 1409 | bs->said = said3(&null_host, htonl(new_shunt_spi), &ip_protocol_internal); |
| 1410 | bs->count = 0; |
| 1411 | bs->last_activity = mononow(); |
| 1412 | dbg_bare_shunt("change", bs); |
| 1413 | } else { |
| 1414 | /* delete pluto bare shunt */ |
| 1415 | free_bare_shunt(bs_pp); |
| 1416 | } |
| 1417 | return TRUE1; |
| 1418 | } else { |
| 1419 | struct bare_shunt **bs_pp = bare_shunt_ptr( |
| 1420 | &this_client, |
| 1421 | &that_client, |
| 1422 | transport_proto); |
| 1423 | |
| 1424 | free_bare_shunt(bs_pp); |
| 1425 | libreswan_log("raw_eroute() to op='%s' with transport_proto='%d' kernel shunt failed - deleting from pluto shunt table",loglog(RC_LOG, "raw_eroute() to op='%s' with transport_proto='%d' kernel shunt failed - deleting from pluto shunt table" , repl ? "replace" : "delete", transport_proto) |
| 1426 | repl ? "replace" : "delete",loglog(RC_LOG, "raw_eroute() to op='%s' with transport_proto='%d' kernel shunt failed - deleting from pluto shunt table" , repl ? "replace" : "delete", transport_proto) |
| 1427 | transport_proto)loglog(RC_LOG, "raw_eroute() to op='%s' with transport_proto='%d' kernel shunt failed - deleting from pluto shunt table" , repl ? "replace" : "delete", transport_proto); |
| 1428 | |
| 1429 | return FALSE0; |
| 1430 | } |
| 1431 | } |
| 1432 | |
| 1433 | bool_Bool replace_bare_shunt(const ip_address *src, const ip_address *dst, |
| 1434 | policy_prio_t policy_prio, /* of replacing shunt*/ |
| 1435 | ipsec_spi_t cur_shunt_spi, /* in host order! */ |
| 1436 | ipsec_spi_t new_shunt_spi, /* in host order! */ |
| 1437 | int transport_proto, |
| 1438 | const char *why) |
| 1439 | { |
| 1440 | return fiddle_bare_shunt(src, dst, policy_prio, cur_shunt_spi, new_shunt_spi, TRUE1, transport_proto, why); |
| 1441 | } |
| 1442 | |
| 1443 | bool_Bool delete_bare_shunt(const ip_address *src, const ip_address *dst, |
| 1444 | int transport_proto, ipsec_spi_t cur_shunt_spi, |
| 1445 | const char *why) |
| 1446 | { |
| 1447 | return fiddle_bare_shunt(src, dst, BOTTOM_PRIO((policy_prio_t)0), cur_shunt_spi, SPI_PASS256 /* unused */, FALSE0, transport_proto, why); |
| 1448 | } |
| 1449 | |
| 1450 | bool_Bool eroute_connection(const struct spd_route *sr, |
| 1451 | ipsec_spi_t cur_spi, |
| 1452 | ipsec_spi_t new_spi, |
| 1453 | const struct ip_protocol *sa_proto, |
| 1454 | enum eroute_type esatype, |
| 1455 | const struct pfkey_proto_info *proto_info, |
| 1456 | uint32_t sa_priority, |
| 1457 | const struct sa_marks *sa_marks, |
| 1458 | const uint32_t xfrm_if_id, |
| 1459 | unsigned int op, |
| 1460 | const char *opname, |
| 1461 | const char *policy_label) |
| 1462 | { |
| 1463 | ip_address peer = sr->that.host_addr; |
| 1464 | char buf2[256]; |
| 1465 | |
| 1466 | snprintf(buf2, sizeof(buf2), |
| 1467 | "eroute_connection %s", opname); |
| 1468 | |
| 1469 | if (sa_proto == &ip_protocol_internal) |
| 1470 | peer = address_any(address_type(&peer)); |
| 1471 | |
| 1472 | if (sr->this.has_cat) { |
| 1473 | ip_subnet client; |
| 1474 | |
| 1475 | endtosubnet(&sr->this.host_addr, &client, HERE(where_t) { .func = __func__, .basename = "kernel.c" , .line = 1475}); |
| 1476 | bool_Bool t = raw_eroute(&sr->this.host_addr, &client, |
| 1477 | &peer, &sr->that.client, |
| 1478 | cur_spi, |
| 1479 | new_spi, |
| 1480 | sa_proto, |
| 1481 | sr->this.protocol, |
| 1482 | esatype, |
| 1483 | proto_info, |
| 1484 | deltatime(0), |
| 1485 | sa_priority, sa_marks, |
| 1486 | xfrm_if_id, |
| 1487 | op, buf2, |
| 1488 | policy_label); |
| 1489 | if (!t) |
| 1490 | libreswan_log("CAT: failed to eroute additional Client Address Translation policy")loglog(RC_LOG, "CAT: failed to eroute additional Client Address Translation policy" ); |
| 1491 | |
| 1492 | dbg("%s CAT extra route added return=%d", __func__, t){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s CAT extra route added return=%d", __func__ , t); } }; |
| 1493 | } |
| 1494 | |
| 1495 | return raw_eroute(&sr->this.host_addr, &sr->this.client, |
| 1496 | &peer, &sr->that.client, |
| 1497 | cur_spi, |
| 1498 | new_spi, |
| 1499 | sa_proto, |
| 1500 | sr->this.protocol, |
| 1501 | esatype, |
| 1502 | proto_info, |
| 1503 | deltatime(0), |
| 1504 | sa_priority, sa_marks, |
| 1505 | xfrm_if_id, |
| 1506 | op, buf2, |
| 1507 | policy_label); |
| 1508 | } |
| 1509 | |
| 1510 | /* assign a bare hold or pass to a connection */ |
| 1511 | |
| 1512 | bool_Bool assign_holdpass(const struct connection *c, |
| 1513 | struct spd_route *sr, |
| 1514 | int transport_proto, ipsec_spi_t negotiation_shunt, |
| 1515 | const ip_address *src, const ip_address *dst) |
| 1516 | { |
| 1517 | /* |
| 1518 | * either the automatically installed %hold eroute is broad enough |
| 1519 | * or we try to add a broader one and delete the automatic one. |
| 1520 | * Beware: this %hold might be already handled, but still squeak |
| 1521 | * through because of a race. |
| 1522 | */ |
| 1523 | enum routing_t ro = sr->routing, /* routing, old */ |
| 1524 | rn = ro; /* routing, new */ |
| 1525 | |
| 1526 | 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__) { lsw_passert_fail ((where_t) { .func = __func__, .basename = "kernel.c" , .line = 1526}, "%s", "LHAS(LELEM(CK_PERMANENT) | LELEM(CK_INSTANCE), c->kind)" ); } }; |
| 1527 | /* figure out what routing should become */ |
| 1528 | switch (ro) { |
| 1529 | case RT_UNROUTED: |
| 1530 | rn = RT_UNROUTED_HOLD; |
| 1531 | break; |
| 1532 | case RT_ROUTED_PROSPECTIVE: |
| 1533 | rn = RT_ROUTED_HOLD; |
| 1534 | break; |
| 1535 | default: |
| 1536 | /* no change: this %hold or %pass is old news */ |
| 1537 | break; |
| 1538 | } |
| 1539 | |
| 1540 | dbg("assign hold, routing was %s, needs to be %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign hold, routing was %s, needs to be %s", enum_name(&routing_story, ro), enum_name(&routing_story , rn)); } } |
| 1541 | enum_name(&routing_story, ro),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign hold, routing was %s, needs to be %s", enum_name(&routing_story, ro), enum_name(&routing_story , rn)); } } |
| 1542 | enum_name(&routing_story, rn)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign hold, routing was %s, needs to be %s", enum_name(&routing_story, ro), enum_name(&routing_story , rn)); } }; |
| 1543 | |
| 1544 | if (eclipsable(sr)(subnetishost(&(sr)->this.client) && subnetishost (&(sr)->that.client))) { |
| 1545 | /* |
| 1546 | * Although %hold or %pass is appropriately broad, it will |
| 1547 | * no longer be bare so we must ditch it from the bare table |
| 1548 | */ |
| 1549 | struct bare_shunt **old = bare_shunt_ptr(&sr->this.client, &sr->that.client, sr->this.protocol); |
| 1550 | |
| 1551 | if (old == NULL((void*)0)) { |
| 1552 | /* ??? should this happen? It does. */ |
| 1553 | libreswan_log("assign_holdpass() no bare shunt to remove? - mismatch?")loglog(RC_LOG, "assign_holdpass() no bare shunt to remove? - mismatch?" ); |
| 1554 | } else { |
| 1555 | /* ??? should this happen? */ |
| 1556 | dbg("assign_holdpass() removing bare shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign_holdpass() removing bare shunt"); } }; |
| 1557 | free_bare_shunt(old); |
| 1558 | } |
| 1559 | } else { |
| 1560 | dbg("assign_holdpass() need broad(er) shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign_holdpass() need broad(er) shunt"); } }; |
| 1561 | /* |
| 1562 | * we need a broad %hold, not the narrow one. |
| 1563 | * First we ensure that there is a broad %hold. |
| 1564 | * There may already be one (race condition): no need to |
| 1565 | * create one. |
| 1566 | * There may already be a %trap: replace it. |
| 1567 | * There may not be any broad eroute: add %hold. |
| 1568 | * Once the broad %hold is in place, delete the narrow one. |
| 1569 | */ |
| 1570 | if (rn != ro) { |
| 1571 | int op; |
| 1572 | const char *reason; |
| 1573 | |
| 1574 | if (erouted(ro)((ro) != RT_UNROUTED)) { |
| 1575 | op = ERO_REPLACE; |
| 1576 | reason = "replace %trap with broad %pass or %hold"; |
| 1577 | } else { |
| 1578 | op = ERO_ADD; |
| 1579 | reason = "add broad %pass or %hold"; |
| 1580 | } |
| 1581 | |
| 1582 | if (eroute_connection(sr, |
| 1583 | htonl(SPI_HOLD259), /* kernel induced */ |
| 1584 | htonl(negotiation_shunt), |
| 1585 | &ip_protocol_internal, ET_INT, |
| 1586 | null_proto_info, |
| 1587 | calculate_sa_prio(c, FALSE0), |
| 1588 | NULL((void*)0), 0 /* xfrm_if_id */, |
| 1589 | op, |
| 1590 | reason, |
| 1591 | c->policy_label)) |
| 1592 | { |
| 1593 | dbg("assign_holdpass() eroute_connection() done"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign_holdpass() eroute_connection() done"); } }; |
| 1594 | } else { |
| 1595 | libreswan_log("assign_holdpass() eroute_connection() failed")loglog(RC_LOG, "assign_holdpass() eroute_connection() failed" ); |
| 1596 | return FALSE0; |
| 1597 | } |
| 1598 | } |
| 1599 | |
| 1600 | if (!delete_bare_shunt(src, dst, |
| 1601 | transport_proto, |
| 1602 | (c->policy & POLICY_NEGO_PASS((lset_t)1 << (POLICY_NEGO_PASS_IX))) ? SPI_PASS256 : SPI_HOLD259, |
| 1603 | (c->policy & POLICY_NEGO_PASS((lset_t)1 << (POLICY_NEGO_PASS_IX))) ? "delete narrow %pass" : |
| 1604 | "delete narrow %hold")) { |
| 1605 | dbg("assign_holdpass() delete_bare_shunt() succeeded"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("assign_holdpass() delete_bare_shunt() succeeded" ); } }; |
| 1606 | } else { |
| 1607 | libreswan_log("assign_holdpass() delete_bare_shunt() failed")loglog(RC_LOG, "assign_holdpass() delete_bare_shunt() failed" ); |
| 1608 | return FALSE0; |
| 1609 | } |
| 1610 | } |
| 1611 | sr->routing = rn; |
| 1612 | dbg(" assign_holdpass() done - returning success"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log(" assign_holdpass() done - returning success") ; } }; |
| 1613 | return TRUE1; |
| 1614 | } |
| 1615 | |
| 1616 | /* compute a (host-order!) SPI to implement the policy in connection c */ |
| 1617 | ipsec_spi_t shunt_policy_spi(const struct connection *c, bool_Bool prospective) |
| 1618 | { |
| 1619 | /* note: these are in host order :-( */ |
| 1620 | static const ipsec_spi_t shunt_spi[] = |
| 1621 | { |
| 1622 | SPI_TRAP260, /* --initiateontraffic */ |
| 1623 | SPI_PASS256, /* --pass */ |
| 1624 | SPI_DROP257, /* --drop */ |
| 1625 | SPI_REJECT258, /* --reject */ |
| 1626 | }; |
| 1627 | |
| 1628 | static const ipsec_spi_t fail_spi[] = |
| 1629 | { |
| 1630 | 0, /* --none*/ |
| 1631 | SPI_PASS256, /* --failpass */ |
| 1632 | SPI_DROP257, /* --faildrop */ |
| 1633 | SPI_REJECT258, /* --failreject */ |
| 1634 | }; |
| 1635 | |
| 1636 | return prospective ? |
| 1637 | shunt_spi[(c->policy & POLICY_SHUNT_MASK(((lset_t)1 << (POLICY_SHUNT1_IX)) - ((lset_t)1 << (POLICY_SHUNT0_IX)) + ((lset_t)1 << (POLICY_SHUNT1_IX) ))) >> |
| 1638 | POLICY_SHUNT_SHIFTPOLICY_SHUNT0_IX] : |
| 1639 | fail_spi[(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]; |
| 1640 | } |
| 1641 | |
| 1642 | bool_Bool del_spi(ipsec_spi_t spi, const struct ip_protocol *proto, |
| 1643 | const ip_address *src, const ip_address *dest) |
| 1644 | { |
| 1645 | char text_said[SATOT_BUFsizeof(said_buf)]; |
| 1646 | |
| 1647 | set_text_said(text_said, dest, spi, proto); |
| 1648 | |
| 1649 | dbg("delete %s", text_said){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("delete %s", text_said); } }; |
| 1650 | |
| 1651 | struct kernel_sa sa = { |
| 1652 | .spi = spi, |
| 1653 | .proto = proto, |
| 1654 | .src.address = src, |
| 1655 | .dst.address = dest, |
| 1656 | .text_said = text_said, |
| 1657 | }; |
| 1658 | |
| 1659 | passert(kernel_ops->del_sa != NULL){ _Bool assertion__ = kernel_ops->del_sa != ((void*)0); if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 1659}, "%s", "kernel_ops->del_sa != NULL" ); } }; |
| 1660 | return kernel_ops->del_sa(&sa); |
| 1661 | } |
| 1662 | |
| 1663 | static void setup_esp_nic_offload(struct kernel_sa *sa, struct connection *c, |
| 1664 | bool_Bool *nic_offload_fallback) |
| 1665 | { |
| 1666 | if (c->nic_offload == yna_no || |
| 1667 | c->interface == NULL((void*)0) || c->interface->ip_dev == NULL((void*)0) || |
| 1668 | c->interface->ip_dev->id_rname == NULL((void*)0)) { |
| 1669 | dbg("NIC esp-hw-offload disabled for connection '%s'", c->name){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("NIC esp-hw-offload disabled for connection '%s'" , c->name); } }; |
| 1670 | return; |
| 1671 | } |
| 1672 | |
| 1673 | if (c->nic_offload == yna_auto) { |
| 1674 | if (!c->interface->ip_dev->id_nic_offload) { |
| 1675 | dbg("NIC esp-hw-offload not for connection '%s' not available on interface %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("NIC esp-hw-offload not for connection '%s' not available on interface %s" , c->name, c->interface->ip_dev->id_rname); } } |
| 1676 | c->name, c->interface->ip_dev->id_rname){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("NIC esp-hw-offload not for connection '%s' not available on interface %s" , c->name, c->interface->ip_dev->id_rname); } }; |
| 1677 | return; |
| 1678 | } |
| 1679 | *nic_offload_fallback = TRUE1; |
| 1680 | dbg("NIC esp-hw-offload offload for connection '%s' enabled on interface %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("NIC esp-hw-offload offload for connection '%s' enabled on interface %s" , c->name, c->interface->ip_dev->id_rname); } } |
| 1681 | c->name, c->interface->ip_dev->id_rname){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("NIC esp-hw-offload offload for connection '%s' enabled on interface %s" , c->name, c->interface->ip_dev->id_rname); } }; |
| 1682 | } |
| 1683 | sa->nic_offload_dev = c->interface->ip_dev->id_rname; |
| 1684 | } |
| 1685 | |
| 1686 | /* |
| 1687 | * Set up one direction of the SA bundle |
| 1688 | */ |
| 1689 | static bool_Bool setup_half_ipsec_sa(struct state *st, bool_Bool inbound) |
| 1690 | { |
| 1691 | /* Build an inbound or outbound SA */ |
| 1692 | |
| 1693 | struct connection *c = st->st_connection; |
| 1694 | ipsec_spi_t inner_spi = 0; |
| 1695 | const struct ip_protocol *proto = NULL((void*)0); |
| 1696 | enum eroute_type esatype = ET_UNSPEC; |
| 1697 | bool_Bool replace = inbound && (kernel_ops->get_spi != NULL((void*)0)); |
| 1698 | bool_Bool outgoing_ref_set = FALSE0; |
| 1699 | bool_Bool incoming_ref_set = FALSE0; |
| 1700 | IPsecSAref_t ref_peer = st->st_ref_peer; |
| 1701 | IPsecSAref_t new_ref_peer = IPSEC_SAREF_NULL((IPsecSAref_t)0u); |
| 1702 | bool_Bool nic_offload_fallback = FALSE0; |
| 1703 | |
| 1704 | /* SPIs, saved for spigrouping or undoing, if necessary */ |
| 1705 | struct kernel_sa said[EM_MAXRELSPIS4]; |
| 1706 | struct kernel_sa *said_next = said; |
| 1707 | |
| 1708 | char text_ipcomp[SATOT_BUFsizeof(said_buf)]; |
| 1709 | char text_esp[SATOT_BUFsizeof(said_buf)]; |
| 1710 | char text_ah[SATOT_BUFsizeof(said_buf)]; |
| 1711 | |
| 1712 | ip_address src, dst; |
| 1713 | ip_selector src_client, dst_client; |
| 1714 | if (inbound) { |
| 1715 | src = c->spd.that.host_addr; |
| 1716 | src_client = c->spd.that.client; |
| 1717 | dst = c->spd.this.host_addr; |
| 1718 | dst_client = c->spd.this.client; |
| 1719 | } else { |
| 1720 | src = c->spd.this.host_addr, |
| 1721 | src_client = c->spd.this.client; |
| 1722 | dst = c->spd.that.host_addr; |
| 1723 | dst_client = c->spd.that.client; |
| 1724 | } |
| 1725 | /* XXX: code is stuffing an endpoint in .host_addr */ |
| 1726 | src = strip_endpoint(&src, HERE(where_t) { .func = __func__, .basename = "kernel.c" , .line = 1726}); |
| 1727 | dst = strip_endpoint(&dst, HERE(where_t) { .func = __func__, .basename = "kernel.c" , .line = 1727}); |
| 1728 | |
| 1729 | /* |
| 1730 | * mode: encapsulation mode called for |
| 1731 | * encap_oneshot: copy of "encapsulation" but reset to |
| 1732 | * ENCAPSULATION_MODE_TRANSPORT after use. |
| 1733 | */ |
| 1734 | int mode = ENCAPSULATION_MODE_TRANSPORT2; |
| 1735 | bool_Bool add_selector; |
| 1736 | |
| 1737 | if (st->st_ah.attrs.mode == ENCAPSULATION_MODE_TUNNEL1 || |
| 1738 | st->st_esp.attrs.mode == ENCAPSULATION_MODE_TUNNEL1 || |
| 1739 | st->st_ipcomp.attrs.mode == ENCAPSULATION_MODE_TUNNEL1) { |
| 1740 | mode = ENCAPSULATION_MODE_TUNNEL1; |
| 1741 | add_selector = FALSE0; /* Don't add selectors for tunnel mode */ |
| 1742 | } else { |
| 1743 | /* |
| 1744 | * RFC 4301, Section 5.2 Requires traffic selectors to be set |
| 1745 | * on transport mode |
| 1746 | */ |
| 1747 | add_selector = TRUE1; |
| 1748 | } |
| 1749 | c->ipsec_mode = mode; |
| 1750 | |
| 1751 | int encap_oneshot = mode; |
| 1752 | |
| 1753 | struct kernel_sa said_boilerplate = { |
| 1754 | .src.address = &src, |
| 1755 | .dst.address = &dst, |
| 1756 | .src.client = &src_client, |
| 1757 | .dst.client = &dst_client, |
| 1758 | .inbound = inbound, |
| 1759 | .add_selector = add_selector, |
| 1760 | .transport_proto = c->spd.this.protocol, |
| 1761 | .sa_lifetime = c->sa_ipsec_life_seconds, |
| 1762 | .outif = -1, |
| 1763 | .sec_ctx = st->sec_ctx, |
| 1764 | }; |
| 1765 | |
| 1766 | inner_spi = SPI_PASS256; |
| 1767 | if (mode == ENCAPSULATION_MODE_TUNNEL1) { |
| 1768 | /* If we are tunnelling, set up IP in IP pseudo SA */ |
| 1769 | proto = &ip_protocol_ipip; |
| 1770 | esatype = ET_IPIP; |
| 1771 | } else { |
| 1772 | /* For transport mode set ESP */ |
| 1773 | /* ??? why are we sure that this isn't AH? */ |
| 1774 | proto = &ip_protocol_esp; |
| 1775 | esatype = ET_ESP; |
| 1776 | } |
| 1777 | |
| 1778 | /* set up IPCOMP SA, if any */ |
| 1779 | |
| 1780 | if (st->st_ipcomp.present) { |
| 1781 | ipsec_spi_t ipcomp_spi = |
| 1782 | inbound ? st->st_ipcomp.our_spi : st->st_ipcomp.attrs.spi; |
| 1783 | unsigned compalg; |
| 1784 | |
| 1785 | switch (st->st_ipcomp.attrs.transattrs.ta_comp) { |
| 1786 | case IPCOMP_DEFLATE: |
| 1787 | compalg = SADB_X_CALG_DEFLATE2; |
| 1788 | break; |
| 1789 | |
| 1790 | default: |
| 1791 | loglog(RC_LOG_SERIOUS, |
| 1792 | "IPCOMP transform %s not implemented", |
| 1793 | st->st_ipcomp.attrs.transattrs.ta_encrypt->common.fqn); |
| 1794 | goto fail; |
| 1795 | } |
| 1796 | |
| 1797 | set_text_said(text_ipcomp, &dst, ipcomp_spi, &ip_protocol_comp); |
| 1798 | |
| 1799 | *said_next = said_boilerplate; |
| 1800 | said_next->spi = ipcomp_spi; |
| 1801 | said_next->esatype = ET_IPCOMP; |
| 1802 | said_next->compalg = compalg; |
| 1803 | said_next->mode = encap_oneshot; |
| 1804 | said_next->reqid = reqid_ipcomp(c->spd.reqid); |
| 1805 | said_next->text_said = text_ipcomp; |
| 1806 | |
| 1807 | if (inbound) { |
| 1808 | /* |
| 1809 | * set corresponding outbound SA. We can do this on |
| 1810 | * each SA in the bundle without harm. |
| 1811 | */ |
| 1812 | said_next->ref_peer = ref_peer; |
| 1813 | } else if (!outgoing_ref_set) { |
| 1814 | /* on outbound, pick up the SAref if not already done */ |
| 1815 | said_next->ref = ref_peer; |
| 1816 | outgoing_ref_set = TRUE1; |
| 1817 | } |
| 1818 | |
| 1819 | if (!kernel_ops->add_sa(said_next, replace)) { |
| 1820 | libreswan_log("add_sa ipcomp failed")loglog(RC_LOG, "add_sa ipcomp failed"); |
| 1821 | goto fail; |
| 1822 | } |
| 1823 | |
| 1824 | /* |
| 1825 | * SA refs will have been allocated for this SA. |
| 1826 | * The inner most one is interesting for the outgoing SA, |
| 1827 | * since we refer to it in the policy that we instantiate. |
| 1828 | */ |
| 1829 | if (new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !inbound) { |
| 1830 | new_ref_peer = said_next->ref; |
| 1831 | if (kernel_ops->type != USE_XFRM && new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 1832 | new_ref_peer = IPSEC_SAREF_NA((IPsecSAref_t)0xffff0001); |
| 1833 | } |
| 1834 | if (!incoming_ref_set && inbound) { |
| 1835 | st->st_ref = said_next->ref; |
| 1836 | incoming_ref_set = TRUE1; |
| 1837 | } |
| 1838 | said_next++; |
| 1839 | |
| 1840 | encap_oneshot = ENCAPSULATION_MODE_TRANSPORT2; |
| 1841 | } |
| 1842 | |
| 1843 | /* set up ESP SA, if any */ |
| 1844 | |
| 1845 | if (st->st_esp.present) { |
| 1846 | ipsec_spi_t esp_spi = |
| 1847 | inbound ? st->st_esp.our_spi : st->st_esp.attrs.spi; |
| 1848 | u_char *esp_dst_keymat = |
| 1849 | inbound ? st->st_esp.our_keymat : st->st_esp. |
| 1850 | peer_keymat; |
| 1851 | const struct trans_attrs *ta = &st->st_esp.attrs.transattrs; |
| 1852 | |
| 1853 | const struct ip_encap *encap_type = NULL((void*)0); |
| 1854 | uint16_t encap_sport = 0, encap_dport = 0; |
| 1855 | ip_address natt_oa; |
| 1856 | |
| 1857 | if (st->hidden_variables.st_nat_traversal & NAT_T_DETECTED( ((lset_t)1 << (NATED_HOST)) | ((lset_t)1 << (NATED_PEER )) ) || |
| 1858 | st->st_interface->protocol == &ip_protocol_tcp) { |
| 1859 | encap_type = st->st_interface->protocol->encap_esp; |
| 1860 | if (inbound) { |
| 1861 | encap_sport = endpoint_hport(&st->st_remote_endpoint); |
| 1862 | encap_dport = endpoint_hport(&st->st_interface->local_endpoint); |
| 1863 | } else { |
| 1864 | encap_sport = endpoint_hport(&st->st_interface->local_endpoint); |
| 1865 | encap_dport = endpoint_hport(&st->st_remote_endpoint); |
| 1866 | } |
| 1867 | natt_oa = st->hidden_variables.st_nat_oa; |
| 1868 | dbg("natt/tcp sa encap_type="PRI_IP_ENCAP" sport=%d dport=%d",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 1869 | pri_ip_encap(encap_type), encap_sport, encap_dport){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } }; |
| 1870 | } |
| 1871 | |
| 1872 | dbg("looking for alg with encrypt: %s keylen: %d integ: %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("looking for alg with encrypt: %s keylen: %d integ: %s" , ta->ta_encrypt->common.fqn, ta->enckeylen, ta-> ta_integ->common.fqn); } } |
| 1873 | ta->ta_encrypt->common.fqn, ta->enckeylen, ta->ta_integ->common.fqn){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("looking for alg with encrypt: %s keylen: %d integ: %s" , ta->ta_encrypt->common.fqn, ta->enckeylen, ta-> ta_integ->common.fqn); } }; |
| 1874 | |
| 1875 | /* |
| 1876 | * Check that both integrity and encryption are |
| 1877 | * supported by the kernel. |
| 1878 | * |
| 1879 | * Since the parser uses these exact same checks when |
| 1880 | * loading the connection, they should never fail (if |
| 1881 | * they do then strange things have been going on |
| 1882 | * since the connection was loaded). |
| 1883 | */ |
| 1884 | if (!kernel_alg_integ_ok(ta->ta_integ)) { |
| 1885 | loglog(RC_LOG_SERIOUS, |
| 1886 | "ESP integrity algorithm %s is not implemented or allowed", |
| 1887 | ta->ta_integ->common.fqn); |
| 1888 | goto fail; |
| 1889 | } |
| 1890 | if (!kernel_alg_encrypt_ok(ta->ta_encrypt)) { |
| 1891 | loglog(RC_LOG_SERIOUS, |
| 1892 | "ESP encryption algorithm %s is not implemented or allowed", |
| 1893 | ta->ta_encrypt->common.fqn); |
| 1894 | goto fail; |
| 1895 | } |
| 1896 | |
| 1897 | /* |
| 1898 | * Validate the encryption key size. |
| 1899 | */ |
| 1900 | size_t encrypt_keymat_size; |
| 1901 | if (!kernel_alg_encrypt_key_size(ta->ta_encrypt, ta->enckeylen, |
| 1902 | &encrypt_keymat_size)) { |
| 1903 | loglog(RC_LOG_SERIOUS, |
| 1904 | "ESP encryption algorithm %s with key length %d not implemented or allowed", |
| 1905 | ta->ta_encrypt->common.fqn, ta->enckeylen); |
| 1906 | goto fail; |
| 1907 | } |
| 1908 | |
| 1909 | /* Fixup key lengths for special cases */ |
| 1910 | #ifdef USE_3DES1 |
| 1911 | if (ta->ta_encrypt == &ike_alg_encrypt_3des_cbc) { |
| 1912 | /* Grrrrr.... f*cking 7 bits jurassic algos */ |
| 1913 | /* 168 bits in kernel, need 192 bits for keymat_len */ |
| 1914 | if (encrypt_keymat_size == 21) { |
| 1915 | dbg("%s requires a 7-bit jurassic adjust",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s requires a 7-bit jurassic adjust", ta-> ta_encrypt->common.fqn); } } |
| 1916 | ta->ta_encrypt->common.fqn){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s requires a 7-bit jurassic adjust", ta-> ta_encrypt->common.fqn); } }; |
| 1917 | encrypt_keymat_size = 24; |
| 1918 | } |
| 1919 | } |
| 1920 | #endif |
| 1921 | |
| 1922 | if (ta->ta_encrypt->salt_size > 0) { |
| 1923 | dbg("%s requires %zu salt bytes",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s requires %zu salt bytes", ta->ta_encrypt ->common.fqn, ta->ta_encrypt->salt_size); } } |
| 1924 | ta->ta_encrypt->common.fqn, ta->ta_encrypt->salt_size){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s requires %zu salt bytes", ta->ta_encrypt ->common.fqn, ta->ta_encrypt->salt_size); } }; |
| 1925 | encrypt_keymat_size += ta->ta_encrypt->salt_size; |
| 1926 | } |
| 1927 | |
| 1928 | size_t integ_keymat_size = ta->ta_integ->integ_keymat_size; /* BYTES */ |
| 1929 | |
| 1930 | dbg("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("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 ); } } |
| 1931 | st->st_esp.keymat_len, encrypt_keymat_size, integ_keymat_size){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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 ); } }; |
| 1932 | |
| 1933 | 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__) { lsw_passert_fail((where_t ) { .func = __func__, .basename = "kernel.c" , .line = 1933}, "%s", "st->st_esp.keymat_len == encrypt_keymat_size + integ_keymat_size" ); } }; |
| 1934 | |
| 1935 | set_text_said(text_esp, &dst, esp_spi, &ip_protocol_esp); |
| 1936 | |
| 1937 | *said_next = said_boilerplate; |
| 1938 | said_next->spi = esp_spi; |
| 1939 | said_next->esatype = ET_ESP; |
| 1940 | said_next->replay_window = c->sa_replay_window; |
| 1941 | dbg("setting IPsec SA replay-window to %d", c->sa_replay_window){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("setting IPsec SA replay-window to %d", c-> sa_replay_window); } }; |
| 1942 | |
| 1943 | if (c->xfrmi != NULL((void*)0)) |
| 1944 | said_next->xfrm_if_id = c->xfrmi->if_id; |
| 1945 | |
| 1946 | if (!inbound && c->sa_tfcpad != 0 && !st->st_seen_no_tfc) { |
| 1947 | dbg("Enabling TFC at %d bytes (up to PMTU)", c->sa_tfcpad){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("Enabling TFC at %d bytes (up to PMTU)", c-> sa_tfcpad); } }; |
| 1948 | said_next->tfcpad = c->sa_tfcpad; |
| 1949 | } |
| 1950 | |
| 1951 | if (c->policy & POLICY_DECAP_DSCP((lset_t)1 << (POLICY_DECAP_DSCP_IX))) { |
| 1952 | dbg("Enabling Decap ToS/DSCP bits"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("Enabling Decap ToS/DSCP bits"); } }; |
| 1953 | said_next->decap_dscp = TRUE1; |
| 1954 | } |
| 1955 | if (c->policy & POLICY_NOPMTUDISC((lset_t)1 << (POLICY_NOPMTUDISC_IX))) { |
| 1956 | dbg("Disabling Path MTU Discovery"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("Disabling Path MTU Discovery"); } }; |
| 1957 | said_next->nopmtudisc = TRUE1; |
| 1958 | } |
| 1959 | |
| 1960 | said_next->integ = ta->ta_integ; |
| 1961 | #ifdef USE_SHA21 |
| 1962 | if (said_next->integ == &ike_alg_integ_sha2_256 && |
| 1963 | LIN(POLICY_SHA2_TRUNCBUG, c->policy)(((((lset_t)1 << (POLICY_SHA2_TRUNCBUG_IX))) & (c-> policy)) == (((lset_t)1 << (POLICY_SHA2_TRUNCBUG_IX))))) { |
| 1964 | if (kernel_ops->sha2_truncbug_support) { |
| 1965 | if (libreswan_fipsmode() == 1) { |
| 1966 | loglog(RC_LOG_SERIOUS, |
| 1967 | "Error: sha2-truncbug=yes is not allowed in FIPS mode"); |
| 1968 | goto fail; |
| 1969 | } |
| 1970 | dbg(" authalg converted for sha2 truncation at 96bits instead of IETF's mandated 128bits"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log(" authalg converted for sha2 truncation at 96bits instead of IETF's mandated 128bits" ); } }; |
| 1971 | /* |
| 1972 | * We need to tell the kernel to mangle |
| 1973 | * the sha2_256, as instructed by the user |
| 1974 | */ |
| 1975 | said_next->integ = &ike_alg_integ_hmac_sha2_256_truncbug; |
| 1976 | } else { |
| 1977 | loglog(RC_LOG_SERIOUS, |
| 1978 | "Error: %s stack does not support sha2_truncbug=yes", |
| 1979 | kernel_ops->kern_name); |
| 1980 | goto fail; |
| 1981 | } |
| 1982 | } |
| 1983 | #endif |
| 1984 | said_next->authalg = said_next->integ->integ_ikev1_ah_transform; |
| 1985 | |
| 1986 | if (st->st_esp.attrs.transattrs.esn_enabled) { |
| 1987 | dbg("Enabling ESN"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("Enabling ESN"); } }; |
| 1988 | said_next->esn = TRUE1; |
| 1989 | } |
| 1990 | |
| 1991 | /* |
| 1992 | * XXX: Assume SADB_ and ESP_ numbers match! Clearly |
| 1993 | * setting .compalg is wrong, don't yet trust |
| 1994 | * lower-level code to be right. |
| 1995 | */ |
| 1996 | said_next->encrypt = ta->ta_encrypt; |
| 1997 | said_next->compalg = said_next->encrypt->common.id[IKEv1_ESP_ID]; |
| 1998 | |
| 1999 | /* divide up keying material */ |
| 2000 | said_next->enckey = esp_dst_keymat; |
| 2001 | said_next->enckeylen = encrypt_keymat_size; /* BYTES */ |
| 2002 | said_next->authkey = esp_dst_keymat + encrypt_keymat_size; |
| 2003 | said_next->authkeylen = integ_keymat_size; /* BYTES */ |
| 2004 | |
| 2005 | said_next->mode = encap_oneshot; |
| 2006 | said_next->reqid = reqid_esp(c->spd.reqid); |
| 2007 | |
| 2008 | said_next->src.encap_port = encap_sport; |
| 2009 | said_next->dst.encap_port = encap_dport; |
| 2010 | said_next->encap_type = encap_type; |
| 2011 | said_next->natt_oa = &natt_oa; |
| 2012 | said_next->text_said = text_esp; |
| 2013 | |
| 2014 | DBG(DBG_PRIVATE, {{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("ESP enckey:", said_next->enckey, said_next ->enckeylen); DBG_dump("ESP authkey:", said_next->authkey , said_next->authkeylen); }; } } |
| 2015 | DBG_dump("ESP enckey:", said_next->enckey,{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("ESP enckey:", said_next->enckey, said_next ->enckeylen); DBG_dump("ESP authkey:", said_next->authkey , said_next->authkeylen); }; } } |
| 2016 | said_next->enckeylen);{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("ESP enckey:", said_next->enckey, said_next ->enckeylen); DBG_dump("ESP authkey:", said_next->authkey , said_next->authkeylen); }; } } |
| 2017 | DBG_dump("ESP authkey:", said_next->authkey,{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("ESP enckey:", said_next->enckey, said_next ->enckeylen); DBG_dump("ESP authkey:", said_next->authkey , said_next->authkeylen); }; } } |
| 2018 | said_next->authkeylen);{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("ESP enckey:", said_next->enckey, said_next ->enckeylen); DBG_dump("ESP authkey:", said_next->authkey , said_next->authkeylen); }; } } |
| 2019 | }){ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("ESP enckey:", said_next->enckey, said_next ->enckeylen); DBG_dump("ESP authkey:", said_next->authkey , said_next->authkeylen); }; } }; |
| 2020 | |
| 2021 | if (inbound) { |
| 2022 | /* |
| 2023 | * set corresponding outbound SA. We can do this on |
| 2024 | * each SA in the bundle without harm. |
| 2025 | */ |
| 2026 | said_next->ref_peer = ref_peer; |
| 2027 | } else if (!outgoing_ref_set) { |
| 2028 | /* on outbound, pick up the SAref if not already done */ |
| 2029 | said_next->ref = ref_peer; |
| 2030 | outgoing_ref_set = TRUE1; |
| 2031 | } |
| 2032 | setup_esp_nic_offload(said_next, c, &nic_offload_fallback); |
| 2033 | |
| 2034 | bool_Bool ret = kernel_ops->add_sa(said_next, replace); |
| 2035 | |
| 2036 | if (!ret && nic_offload_fallback && |
| 2037 | said_next->nic_offload_dev != NULL((void*)0)) { |
| 2038 | /* Fallback to non-nic-offload crypto */ |
| 2039 | said_next->nic_offload_dev = NULL((void*)0); |
| 2040 | ret = kernel_ops->add_sa(said_next, replace); |
| 2041 | } |
| 2042 | |
| 2043 | /* scrub keys from memory */ |
| 2044 | memset(said_next->enckey, 0, said_next->enckeylen); |
| 2045 | memset(said_next->authkey, 0, said_next->authkeylen); |
| 2046 | |
| 2047 | if (!ret) |
| 2048 | goto fail; |
| 2049 | |
| 2050 | /* |
| 2051 | * SA refs will have been allocated for this SA. |
| 2052 | * The inner most one is interesting for the outgoing SA, |
| 2053 | * since we refer to it in the policy that we instantiate. |
| 2054 | */ |
| 2055 | if (new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !inbound) { |
| 2056 | new_ref_peer = said_next->ref; |
| 2057 | if (kernel_ops->type != USE_XFRM && new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2058 | new_ref_peer = IPSEC_SAREF_NA((IPsecSAref_t)0xffff0001); |
| 2059 | } |
| 2060 | if (!incoming_ref_set && inbound) { |
| 2061 | st->st_ref = said_next->ref; |
| 2062 | incoming_ref_set = TRUE1; |
| 2063 | } |
| 2064 | said_next++; |
| 2065 | |
| 2066 | encap_oneshot = ENCAPSULATION_MODE_TRANSPORT2; |
| 2067 | } |
| 2068 | |
| 2069 | /* set up AH SA, if any */ |
| 2070 | |
| 2071 | if (st->st_ah.present) { |
| 2072 | ipsec_spi_t ah_spi = |
| 2073 | inbound ? st->st_ah.our_spi : st->st_ah.attrs.spi; |
| 2074 | u_char *ah_dst_keymat = |
| 2075 | inbound ? st->st_ah.our_keymat : st->st_ah.peer_keymat; |
| 2076 | |
| 2077 | const struct integ_desc *integ = st->st_ah.attrs.transattrs.ta_integ; |
| 2078 | size_t keymat_size = integ->integ_keymat_size; |
| 2079 | int authalg = integ->integ_ikev1_ah_transform; |
| 2080 | if (authalg <= 0) { |
| 2081 | loglog(RC_LOG_SERIOUS, "%s not implemented", |
| 2082 | integ->common.fqn); |
| 2083 | goto fail; |
| 2084 | } |
| 2085 | |
| 2086 | passert(st->st_ah.keymat_len == keymat_size){ _Bool assertion__ = st->st_ah.keymat_len == keymat_size; if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 2086}, "%s", "st->st_ah.keymat_len == keymat_size" ); } }; |
| 2087 | |
| 2088 | set_text_said(text_ah, &dst, ah_spi, &ip_protocol_ah); |
| 2089 | |
| 2090 | *said_next = said_boilerplate; |
| 2091 | said_next->spi = ah_spi; |
| 2092 | said_next->esatype = ET_AH; |
| 2093 | said_next->integ = integ; |
| 2094 | said_next->authalg = authalg; |
| 2095 | said_next->authkeylen = st->st_ah.keymat_len; |
| 2096 | said_next->authkey = ah_dst_keymat; |
| 2097 | said_next->mode = encap_oneshot; |
| 2098 | said_next->reqid = reqid_ah(c->spd.reqid); |
| 2099 | said_next->text_said = text_ah; |
| 2100 | said_next->replay_window = c->sa_replay_window; |
| 2101 | dbg("setting IPsec SA replay-window to %d", c->sa_replay_window){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("setting IPsec SA replay-window to %d", c-> sa_replay_window); } }; |
| 2102 | |
| 2103 | if (st->st_ah.attrs.transattrs.esn_enabled) { |
| 2104 | dbg("Enabling ESN"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("Enabling ESN"); } }; |
| 2105 | said_next->esn = TRUE1; |
| 2106 | } |
| 2107 | |
| 2108 | DBG(DBG_PRIVATE, {{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("AH authkey:", said_next->authkey, said_next ->authkeylen); }; } } |
| 2109 | DBG_dump("AH authkey:", said_next->authkey,{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("AH authkey:", said_next->authkey, said_next ->authkeylen); }; } } |
| 2110 | said_next->authkeylen);{ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("AH authkey:", said_next->authkey, said_next ->authkeylen); }; } } |
| 2111 | }){ if ((cur_debugging & (((lset_t)1 << (DBG_PRIVATE_IX ))))) { { DBG_dump("AH authkey:", said_next->authkey, said_next ->authkeylen); }; } }; |
| 2112 | |
| 2113 | if (inbound) { |
| 2114 | /* |
| 2115 | * set corresponding outbound SA. We can do this on |
| 2116 | * each SA in the bundle without harm. |
| 2117 | */ |
| 2118 | said_next->ref_peer = ref_peer; |
| 2119 | } else if (!outgoing_ref_set) { |
| 2120 | /* on outbound, pick up the SAref if not already done */ |
| 2121 | said_next->ref = ref_peer; |
| 2122 | outgoing_ref_set = TRUE1; /* outgoing_ref_set not subsequently used */ |
| 2123 | } |
| 2124 | |
| 2125 | if (!kernel_ops->add_sa(said_next, replace)) { |
| 2126 | /* scrub key from memory */ |
| 2127 | memset(said_next->authkey, 0, said_next->authkeylen); |
| 2128 | goto fail; |
| 2129 | } |
| 2130 | /* scrub key from memory */ |
| 2131 | memset(said_next->authkey, 0, said_next->authkeylen); |
| 2132 | |
| 2133 | /* |
| 2134 | * SA refs will have been allocated for this SA. |
| 2135 | * The inner most one is interesting for the outgoing SA, |
| 2136 | * since we refer to it in the policy that we instantiate. |
| 2137 | */ |
| 2138 | if (new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !inbound) { |
| 2139 | new_ref_peer = said_next->ref; |
| 2140 | if (kernel_ops->type != USE_XFRM && new_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2141 | new_ref_peer = IPSEC_SAREF_NA((IPsecSAref_t)0xffff0001); |
| 2142 | } |
| 2143 | if (!incoming_ref_set && inbound) { |
| 2144 | st->st_ref = said_next->ref; |
| 2145 | incoming_ref_set = TRUE1; /* incoming_ref_set not subsequently used */ |
Value stored to 'incoming_ref_set' is never read | |
| 2146 | } |
| 2147 | said_next++; |
| 2148 | |
| 2149 | encap_oneshot = ENCAPSULATION_MODE_TRANSPORT2; /* encap_oneshot not subsequently used */ |
| 2150 | } |
| 2151 | |
| 2152 | /* |
| 2153 | * Add an inbound eroute to enforce an arrival check. |
| 2154 | * |
| 2155 | * If inbound, |
| 2156 | * ??? and some more mysterious conditions, |
| 2157 | * Note reversed ends. |
| 2158 | * Not much to be done on failure. |
| 2159 | */ |
| 2160 | dbg("%s() is installing inbound eroute? inbound=%d owner=#%lu mode=%d",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() is installing inbound eroute? inbound=%d owner=#%lu mode=%d" , __func__, inbound, c->spd.eroute_owner, mode); } } |
| 2161 | __func__, inbound, c->spd.eroute_owner, mode){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() is installing inbound eroute? inbound=%d owner=#%lu mode=%d" , __func__, inbound, c->spd.eroute_owner, mode); } }; |
| 2162 | if (inbound && c->spd.eroute_owner == SOS_NOBODY0) { |
| 2163 | dbg("%s() is installing inbound eroute", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() is installing inbound eroute", __func__) ; } }; |
| 2164 | struct pfkey_proto_info proto_info[4]; |
| 2165 | int i = 0; |
| 2166 | |
| 2167 | /* |
| 2168 | * ??? why does this code care about |
| 2169 | * st->st_*.attrs.mode? |
| 2170 | * We have gone do some trouble to compute |
| 2171 | * "mode". And later code uses |
| 2172 | * "mode". |
| 2173 | */ |
| 2174 | if (st->st_ipcomp.present) { |
| 2175 | proto_info[i].proto = ip_protocol_comp.ipproto; |
| 2176 | proto_info[i].mode = |
| 2177 | st->st_ipcomp.attrs.mode; |
| 2178 | proto_info[i].reqid = reqid_ipcomp(c->spd.reqid); |
| 2179 | i++; |
| 2180 | } |
| 2181 | |
| 2182 | if (st->st_esp.present) { |
| 2183 | proto_info[i].proto = IPPROTO_ESPIPPROTO_ESP; |
| 2184 | proto_info[i].mode = |
| 2185 | st->st_esp.attrs.mode; |
| 2186 | proto_info[i].reqid = reqid_esp(c->spd.reqid); |
| 2187 | i++; |
| 2188 | } |
| 2189 | |
| 2190 | if (st->st_ah.present) { |
| 2191 | proto_info[i].proto = IPPROTO_AHIPPROTO_AH; |
| 2192 | proto_info[i].mode = |
| 2193 | st->st_ah.attrs.mode; |
| 2194 | proto_info[i].reqid = reqid_ah(c->spd.reqid); |
| 2195 | i++; |
| 2196 | } |
| 2197 | |
| 2198 | dbg("%s() before proto %d", __func__, proto_info[0].proto){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() before proto %d", __func__, proto_info[0 ].proto); } }; |
| 2199 | proto_info[i].proto = 0; |
| 2200 | |
| 2201 | /* |
| 2202 | * ??? why is mode overwritten ONLY if true |
| 2203 | * (kernel_ops->inbound_eroute)? |
| 2204 | */ |
| 2205 | if (mode == ENCAPSULATION_MODE_TUNNEL1) { |
| 2206 | proto_info[0].mode = |
| 2207 | ENCAPSULATION_MODE_TUNNEL1; |
| 2208 | for (i = 1; proto_info[i].proto; i++) |
| 2209 | proto_info[i].mode = |
| 2210 | ENCAPSULATION_MODE_TRANSPORT2; |
| 2211 | } |
| 2212 | dbg("%s() after proto %d", __func__, proto_info[0].proto){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() after proto %d", __func__, proto_info[0] .proto); } }; |
| 2213 | |
| 2214 | uint32_t xfrm_if_id = c->xfrmi != NULL((void*)0) ? |
| 2215 | c->xfrmi->if_id : 0; |
| 2216 | |
| 2217 | dbg("%s() calling raw_eroute backwards (i.e., inbound)", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("%s() calling raw_eroute backwards (i.e., inbound)" , __func__); } }; |
| 2218 | /* MCR - should be passed a spd_eroute structure here */ |
| 2219 | /* note: this and that are intentionally reversed */ |
| 2220 | if (!raw_eroute(&c->spd.that.host_addr, /* this_host */ |
| 2221 | &c->spd.that.client, /* this_client */ |
| 2222 | &c->spd.this.host_addr, /* that_host */ |
| 2223 | &c->spd.this.client, /* that_client */ |
| 2224 | inner_spi, /* current spi - might not be used? */ |
| 2225 | inner_spi, /* new spi */ |
| 2226 | proto, /* SA proto */ |
| 2227 | c->spd.this.protocol, /* transport_proto */ |
| 2228 | esatype, /* esatype */ |
| 2229 | proto_info, /* " */ |
| 2230 | deltatime(0), /* lifetime */ |
| 2231 | calculate_sa_prio(c, FALSE0), /* priority */ |
| 2232 | &c->sa_marks, /* IPsec SA marks */ |
| 2233 | xfrm_if_id, |
| 2234 | ERO_ADD_INBOUND, /* op */ |
| 2235 | "add inbound", /* opname */ |
| 2236 | st->st_connection->policy_label)) |
| 2237 | { |
| 2238 | libreswan_log("raw_eroute() in setup_half_ipsec_sa() failed to add inbound")loglog(RC_LOG, "raw_eroute() in setup_half_ipsec_sa() failed to add inbound" ); |
| 2239 | } |
| 2240 | } |
| 2241 | |
| 2242 | /* If there are multiple SPIs, group them. */ |
| 2243 | |
| 2244 | if (kernel_ops->grp_sa != NULL((void*)0) && said_next > &said[1]) { |
| 2245 | struct kernel_sa *s; |
| 2246 | |
| 2247 | /* |
| 2248 | * group SAs, two at a time, inner to outer (backwards in |
| 2249 | * said[]) |
| 2250 | * |
| 2251 | * The grouping is by pairs. So if said[] contains |
| 2252 | * ah esp ipip, |
| 2253 | * |
| 2254 | * the grouping would be ipip:esp, esp:ah. |
| 2255 | */ |
| 2256 | for (s = said; s < said_next - 1; s++) { |
| 2257 | dbg("grouping %s (ref=%u) and %s (ref=%u)",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("grouping %s (ref=%u) and %s (ref=%u)", s[0].text_said , s[0].ref, s[1].text_said, s[1].ref); } } |
| 2258 | s[0].text_said, s[0].ref,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("grouping %s (ref=%u) and %s (ref=%u)", s[0].text_said , s[0].ref, s[1].text_said, s[1].ref); } } |
| 2259 | s[1].text_said, s[1].ref){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("grouping %s (ref=%u) and %s (ref=%u)", s[0].text_said , s[0].ref, s[1].text_said, s[1].ref); } }; |
| 2260 | if (!kernel_ops->grp_sa(s + 1, s)) { |
| 2261 | libreswan_log("grp_sa failed")loglog(RC_LOG, "grp_sa failed"); |
| 2262 | goto fail; |
| 2263 | } |
| 2264 | } |
| 2265 | /* could update said, but it will not be used */ |
| 2266 | } |
| 2267 | |
| 2268 | if (new_ref_peer != IPSEC_SAREF_NULL((IPsecSAref_t)0u)) |
| 2269 | st->st_ref_peer = new_ref_peer; |
| 2270 | |
| 2271 | /* if the impaired is set, pretend this fails */ |
| 2272 | if (impair.sa_creation) { |
| 2273 | DBG_log("Impair SA creation is set, pretending to fail"); |
| 2274 | goto fail; |
| 2275 | } |
| 2276 | return TRUE1; |
| 2277 | |
| 2278 | fail: |
| 2279 | { |
| 2280 | libreswan_log("setup_half_ipsec_sa() hit fail:")loglog(RC_LOG, "setup_half_ipsec_sa() hit fail:"); |
| 2281 | /* undo the done SPIs */ |
| 2282 | while (said_next-- != said) { |
| 2283 | if (said_next->proto != 0) { |
| 2284 | (void) del_spi(said_next->spi, |
| 2285 | said_next->proto, |
| 2286 | &src, said_next->dst.address); |
| 2287 | } |
| 2288 | } |
| 2289 | return FALSE0; |
| 2290 | } |
| 2291 | } |
| 2292 | |
| 2293 | static bool_Bool teardown_half_ipsec_sa(struct state *st, bool_Bool inbound) |
| 2294 | { |
| 2295 | /* Delete any AH, ESP, and IP in IP SPIs. */ |
| 2296 | |
| 2297 | struct connection *const c = st->st_connection; |
| 2298 | |
| 2299 | /* |
| 2300 | * If we have a new address in c->spd.that.host_addr, |
| 2301 | * we are the initiator, have been redirected, |
| 2302 | * and yet this routine must use the old address. |
| 2303 | * |
| 2304 | * We point effective_that_host_address to the appropriate address. |
| 2305 | */ |
| 2306 | |
| 2307 | const ip_address *effective_that_host_addr = &c->spd.that.host_addr; |
| 2308 | |
| 2309 | if (!sameaddr(&st->st_remote_endpoint, effective_that_host_addr) && |
| 2310 | address_is_specified(&c->temp_vars.redirect_ip)) { |
| 2311 | effective_that_host_addr = &st->st_remote_endpoint; |
| 2312 | } |
| 2313 | |
| 2314 | /* ??? CLANG 3.5 thinks that c might be NULL */ |
| 2315 | if (inbound && c->spd.eroute_owner == SOS_NOBODY0 && |
| 2316 | !raw_eroute(effective_that_host_addr, |
| 2317 | &c->spd.that.client, |
| 2318 | &c->spd.this.host_addr, |
| 2319 | &c->spd.this.client, |
| 2320 | SPI_PASS256, SPI_PASS256, |
| 2321 | c->ipsec_mode == ENCAPSULATION_MODE_TRANSPORT2 ? |
| 2322 | &ip_protocol_esp : NULL((void*)0), |
| 2323 | c->spd.this.protocol, |
| 2324 | c->ipsec_mode == ENCAPSULATION_MODE_TRANSPORT2 ? |
| 2325 | ET_ESP : ET_UNSPEC, |
| 2326 | null_proto_info, |
| 2327 | deltatime(0), |
| 2328 | calculate_sa_prio(c, FALSE0), |
| 2329 | &c->sa_marks, |
| 2330 | 0, /* xfrm_if_id. needed to tear down? */ |
| 2331 | ERO_DEL_INBOUND, |
| 2332 | "delete inbound", |
| 2333 | c->policy_label)) |
| 2334 | { |
| 2335 | libreswan_log("raw_eroute in teardown_half_ipsec_sa() failed to delete inbound")loglog(RC_LOG, "raw_eroute in teardown_half_ipsec_sa() failed to delete inbound" ); |
| 2336 | } |
| 2337 | |
| 2338 | /* collect each proto SA that needs deleting */ |
| 2339 | |
| 2340 | struct { |
| 2341 | const struct ip_protocol *proto; |
| 2342 | const struct ipsec_proto_info *info; |
| 2343 | } protos[4]; /* at most 3 entries + terminator */ |
| 2344 | int i = 0; |
| 2345 | |
| 2346 | if (st->st_ah.present) { |
| 2347 | protos[i].proto = &ip_protocol_ah; |
| 2348 | protos[i].info = &st->st_ah; |
| 2349 | i++; |
| 2350 | } |
| 2351 | |
| 2352 | if (st->st_esp.present) { |
| 2353 | protos[i].proto = &ip_protocol_esp; |
| 2354 | protos[i].info = &st->st_esp; |
| 2355 | i++; |
| 2356 | } |
| 2357 | |
| 2358 | if (st->st_ipcomp.present) { |
| 2359 | protos[i].proto = &ip_protocol_comp; |
| 2360 | protos[i].info = &st->st_ipcomp; |
| 2361 | i++; |
| 2362 | } |
| 2363 | |
| 2364 | /* |
| 2365 | * If the SAs have been grouped, deleting any one will do: |
| 2366 | * we just delete the first one found (protos[0]). |
| 2367 | */ |
| 2368 | if (kernel_ops->grp_sa != NULL((void*)0) && i > 0) |
| 2369 | i = 1; |
| 2370 | |
| 2371 | protos[i].proto = NULL((void*)0); |
| 2372 | |
| 2373 | /* delete each proto that needs deleting */ |
| 2374 | bool_Bool result = TRUE1; |
| 2375 | |
| 2376 | for (i = 0; protos[i].proto != NULL((void*)0); i++) { |
| 2377 | const struct ip_protocol *proto = protos[i].proto; |
| 2378 | ipsec_spi_t spi; |
| 2379 | const ip_address *src, *dst; |
| 2380 | |
| 2381 | if (inbound) { |
| 2382 | spi = protos[i].info->our_spi; |
| 2383 | src = effective_that_host_addr; |
| 2384 | dst = &c->spd.this.host_addr; |
| 2385 | } else { |
| 2386 | spi = protos[i].info->attrs.spi; |
| 2387 | src = &c->spd.this.host_addr; |
| 2388 | dst = effective_that_host_addr; |
| 2389 | } |
| 2390 | |
| 2391 | result &= del_spi(spi, proto, src, dst); |
| 2392 | } |
| 2393 | |
| 2394 | return result; |
| 2395 | } |
| 2396 | |
| 2397 | static event_callback_routine kernel_process_msg_cb; |
| 2398 | |
| 2399 | static void kernel_process_msg_cb(evutil_socket_tint fd, |
| 2400 | const short event UNUSED__attribute__ ((unused)), void *arg) |
| 2401 | { |
| 2402 | const struct kernel_ops *kernel_ops = arg; |
| 2403 | |
| 2404 | dbg(" %s process netlink message", __func__){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log(" %s process netlink message", __func__); } }; |
| 2405 | threadtime_t start = threadtime_start(); |
| 2406 | kernel_ops->process_msg(fd); |
| 2407 | threadtime_stop(&start, SOS_NOBODY0, "kernel message"); |
| 2408 | pexpect_reset_globals()log_pexpect_reset_globals((where_t) { .func = __func__, .basename = "kernel.c" , .line = 2408}); |
| 2409 | } |
| 2410 | |
| 2411 | static global_timer_cb kernel_process_queue_cb; |
| 2412 | |
| 2413 | static void kernel_process_queue_cb(struct fd *unused_whackfd UNUSED__attribute__ ((unused))) |
| 2414 | { |
| 2415 | if (pexpect(kernel_ops->process_queue != NULL)({ _Bool assertion__ = kernel_ops->process_queue != ((void *)0); if (!assertion__) { log_pexpect((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 2415}, "%s", "kernel_ops->process_queue != NULL" ); } assertion__; })) { |
| 2416 | kernel_ops->process_queue(); |
| 2417 | } |
| 2418 | pexpect_reset_globals()log_pexpect_reset_globals((where_t) { .func = __func__, .basename = "kernel.c" , .line = 2418}); |
| 2419 | } |
| 2420 | |
| 2421 | /* keep track of kernel version */ |
| 2422 | static char kversion[256]; |
| 2423 | |
| 2424 | const struct kernel_ops *kernel_ops = |
| 2425 | #ifdef XFRM_SUPPORT1 |
| 2426 | &xfrm_kernel_ops |
| 2427 | #endif |
| 2428 | #ifdef BSD_KAME |
| 2429 | &bsdkame_kernel_ops |
| 2430 | #endif |
| 2431 | ; |
| 2432 | |
| 2433 | deltatime_t bare_shunt_interval = DELTATIME_INIT(SHUNT_SCAN_INTERVAL){ .dt = { .tv_sec = ((2 * 10)), } }; |
| 2434 | |
| 2435 | static void kernel_scan_shunts(struct fd *unused_whackfd UNUSED__attribute__ ((unused))) |
| 2436 | { |
| 2437 | kernel_ops->scan_shunts(); |
| 2438 | } |
| 2439 | |
| 2440 | void init_kernel(void) |
| 2441 | { |
| 2442 | struct utsname un; |
| 2443 | |
| 2444 | /* get kernel version */ |
| 2445 | uname(&un); |
| 2446 | jam_str(kversion, sizeof(kversion), un.release); |
| 2447 | |
| 2448 | switch (kernel_ops->type) { |
| 2449 | #if defined(XFRM_SUPPORT1) |
| 2450 | case USE_XFRM: |
| 2451 | { |
| 2452 | struct stat buf; |
| 2453 | if (stat("/proc/sys/net/core/xfrm_acq_expires", &buf) != 0) { |
| 2454 | libreswan_log("No XFRM kernel support detected, missing /proc/sys/net/core/xfrm_acq_expires")loglog(RC_LOG, "No XFRM kernel support detected, missing /proc/sys/net/core/xfrm_acq_expires" ); |
| 2455 | exit_pluto(PLUTO_EXIT_KERNEL_FAIL); |
| 2456 | } |
| 2457 | libreswan_log("Using Linux XFRM/NETKEY IPsec kernel support code on %s",loglog(RC_LOG, "Using Linux XFRM/NETKEY IPsec kernel support code on %s" , kversion) |
| 2458 | kversion)loglog(RC_LOG, "Using Linux XFRM/NETKEY IPsec kernel support code on %s" , kversion); |
| 2459 | break; |
| 2460 | } |
| 2461 | #endif |
| 2462 | |
| 2463 | #if defined(BSD_KAME) |
| 2464 | case USE_BSDKAME: |
| 2465 | libreswan_log("Using BSD/KAME IPsec interface code on %s",loglog(RC_LOG, "Using BSD/KAME IPsec interface code on %s", kversion ) |
| 2466 | kversion)loglog(RC_LOG, "Using BSD/KAME IPsec interface code on %s", kversion ); |
| 2467 | break; |
| 2468 | #endif |
| 2469 | |
| 2470 | default: |
| 2471 | libreswan_log("FATAL: kernel interface '%s' not available",loglog(RC_LOG, "FATAL: kernel interface '%s' not available", enum_name (&kern_interface_names, kernel_ops->type)) |
| 2472 | enum_name(&kern_interface_names,loglog(RC_LOG, "FATAL: kernel interface '%s' not available", enum_name (&kern_interface_names, kernel_ops->type)) |
| 2473 | kernel_ops->type))loglog(RC_LOG, "FATAL: kernel interface '%s' not available", enum_name (&kern_interface_names, kernel_ops->type)); |
| 2474 | exit_pluto(PLUTO_EXIT_KERNEL_FAIL); |
| 2475 | } |
| 2476 | |
| 2477 | if (kernel_ops->init != NULL((void*)0)) |
| 2478 | kernel_ops->init(); |
| 2479 | |
| 2480 | /* Add the port bypass polcies */ |
| 2481 | |
| 2482 | if (kernel_ops->v6holes != NULL((void*)0)) { |
| 2483 | if (!kernel_ops->v6holes()) { |
| 2484 | libreswan_log("Could not add the ICMP bypass policies")loglog(RC_LOG, "Could not add the ICMP bypass policies"); |
| 2485 | exit_pluto(PLUTO_EXIT_KERNEL_FAIL); |
| 2486 | } |
| 2487 | } |
| 2488 | |
| 2489 | /* register SA types that we can negotiate */ |
| 2490 | if (kernel_ops->pfkey_register != NULL((void*)0)) |
| 2491 | kernel_ops->pfkey_register(); |
| 2492 | |
| 2493 | enable_periodic_timer(EVENT_SHUNT_SCAN, kernel_scan_shunts, |
| 2494 | bare_shunt_interval); |
| 2495 | |
| 2496 | dbg("setup kernel fd callback"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("setup kernel fd callback"); } }; |
| 2497 | |
| 2498 | if (kernel_ops->async_fdp != NULL((void*)0)) |
| 2499 | /* Note: kernel_ops is const but pluto_event_add cannot know that */ |
| 2500 | add_fd_read_event_handler(*kernel_ops->async_fdp, kernel_process_msg_cb, |
| 2501 | (void *)kernel_ops, "KERNEL_XRM_FD"); |
| 2502 | |
| 2503 | if (kernel_ops->route_fdp != NULL((void*)0) && *kernel_ops->route_fdp > NULL_FD(-1)) { |
| 2504 | add_fd_read_event_handler(*kernel_ops->route_fdp, kernel_process_msg_cb, |
| 2505 | (void *)kernel_ops, "KERNEL_ROUTE_FD"); |
| 2506 | } |
| 2507 | |
| 2508 | if (kernel_ops->process_queue != NULL((void*)0)) { |
| 2509 | /* |
| 2510 | * AA_2015 this is untested code. only for non xfrm ??? |
| 2511 | * It seems in klips we should, besides kernel_process_msg, |
| 2512 | * call process_queue periodically. Does the order |
| 2513 | * matter? |
| 2514 | */ |
| 2515 | enable_periodic_timer(EVENT_PROCESS_KERNEL_QUEUE, |
| 2516 | kernel_process_queue_cb, |
| 2517 | deltatime(KERNEL_PROCESS_Q_PERIOD1)); |
| 2518 | } |
| 2519 | } |
| 2520 | |
| 2521 | void show_kernel_interface(struct show *s) |
| 2522 | { |
| 2523 | if (kernel_ops != NULL((void*)0)) { |
| 2524 | show_comment(s, "using kernel interface: %s", |
| 2525 | kernel_ops->kern_name); |
| 2526 | } |
| 2527 | } |
| 2528 | |
| 2529 | /* |
| 2530 | * see if the attached connection refers to an older state. |
| 2531 | * if it does, then initiate this state with the appropriate outgoing |
| 2532 | * references, such that we won't break any userland applications |
| 2533 | * that are using the conn with REFINFO. |
| 2534 | */ |
| 2535 | static void look_for_replacement_state(struct state *st) |
| 2536 | { |
| 2537 | struct connection *c = st->st_connection; |
| 2538 | struct state *ost = state_with_serialno(c->newest_ipsec_sa); |
| 2539 | |
| 2540 | if (DBGP(DBG_BASE)(cur_debugging & (((lset_t)1 << (DBG_BASE_IX))))) { |
| 2541 | DBG_log("checking if this is a replacement state"); |
| 2542 | DBG_log(" st=%p ost=%p st->serialno=#%lu ost->serialno=#%lu", |
| 2543 | st, ost, st->st_serialno, |
| 2544 | ost == NULL((void*)0) ? 0 : ost->st_serialno); |
| 2545 | } |
| 2546 | |
| 2547 | if (ost != NULL((void*)0) && ost != st && ost->st_serialno != st->st_serialno) { |
| 2548 | /* |
| 2549 | * then there is an old state associated, and it is |
| 2550 | * different then the new one. |
| 2551 | */ |
| 2552 | dbg("keeping ref_peer=%" PRIu32 " during rekey", ost->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("keeping ref_peer=%" "u" " during rekey", ost-> st_ref_peer); } }; |
| 2553 | st->st_ref_peer = ost->st_ref_peer; |
| 2554 | } |
| 2555 | } |
| 2556 | |
| 2557 | /* |
| 2558 | * Note: install_inbound_ipsec_sa is only used by the Responder. |
| 2559 | * The Responder will subsequently use install_ipsec_sa for the outbound. |
| 2560 | * The Initiator uses install_ipsec_sa to install both at once. |
| 2561 | */ |
| 2562 | bool_Bool install_inbound_ipsec_sa(struct state *st) |
| 2563 | { |
| 2564 | struct connection *const c = st->st_connection; |
| 2565 | |
| 2566 | /* |
| 2567 | * If our peer has a fixed-address client, check if we already |
| 2568 | * have a route for that client that conflicts. We will take this |
| 2569 | * as proof that that route and the connections using it are |
| 2570 | * obsolete and should be eliminated. Interestingly, this is |
| 2571 | * the only case in which we can tell that a connection is obsolete. |
| 2572 | */ |
| 2573 | passert(c->kind == CK_PERMANENT || c->kind == CK_INSTANCE){ _Bool assertion__ = c->kind == CK_PERMANENT || c->kind == CK_INSTANCE; if (!assertion__) { lsw_passert_fail((where_t ) { .func = __func__, .basename = "kernel.c" , .line = 2573}, "%s", "c->kind == CK_PERMANENT || c->kind == CK_INSTANCE" ); } }; |
| 2574 | if (c->spd.that.has_client) { |
| 2575 | for (;; ) { |
| 2576 | struct spd_route *esr; /* value is ignored */ |
| 2577 | struct connection *o = route_owner(c, &c->spd, &esr, |
| 2578 | NULL((void*)0), NULL((void*)0)); |
| 2579 | |
| 2580 | if (o == NULL((void*)0) || c == o) |
| 2581 | break; /* nobody interesting has a route */ |
| 2582 | |
| 2583 | /* note: we ignore the client addresses at this end */ |
| 2584 | if (sameaddr(&o->spd.that.host_addr, |
| 2585 | &c->spd.that.host_addr) && |
| 2586 | o->interface == c->interface) |
| 2587 | break; /* existing route is compatible */ |
| 2588 | |
| 2589 | if (kernel_ops->overlap_supported) { |
| 2590 | /* |
| 2591 | * Both are transport mode, allow overlapping. |
| 2592 | * [bart] not sure if this is actually |
| 2593 | * intended, but am leaving it in to make it |
| 2594 | * behave like before |
| 2595 | */ |
| 2596 | if (!LIN(POLICY_TUNNEL, c->policy | o->policy)(((((lset_t)1 << (POLICY_TUNNEL_IX))) & (c->policy | o->policy)) == (((lset_t)1 << (POLICY_TUNNEL_IX)) ))) |
| 2597 | break; |
| 2598 | |
| 2599 | /* Both declared that overlapping is OK. */ |
| 2600 | if (LIN(POLICY_OVERLAPIP, c->policy & o->policy)(((((lset_t)1 << (POLICY_OVERLAPIP_IX))) & (c->policy & o->policy)) == (((lset_t)1 << (POLICY_OVERLAPIP_IX ))))) |
| 2601 | break; |
| 2602 | } |
| 2603 | |
| 2604 | address_buf b; |
| 2605 | connection_buf cib; |
| 2606 | log_state(RC_LOG_SERIOUS, st, |
| 2607 | "route to peer's client conflicts with "PRI_CONNECTION"\"%s\"%s"" %s; releasing old connection to free the route", |
| 2608 | pri_connection(o, &cib)(o)->name, str_connection_instance(o, &cib), |
| 2609 | str_address_sensitive(&o->spd.that.host_addr, &b)); |
| 2610 | /* |
| 2611 | * XXX: Assume this call shouldn't log to |
| 2612 | * whack(?). While ST has an attached whack, |
| 2613 | * the global whack, which this code would |
| 2614 | * have been using, detached long-ago. |
| 2615 | */ |
| 2616 | release_connection(o, false0, null_fd((struct fd *) ((void*)0))); |
| 2617 | } |
| 2618 | } |
| 2619 | |
| 2620 | dbg("install_inbound_ipsec_sa() checking if we can route"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("install_inbound_ipsec_sa() checking if we can route" ); } }; |
| 2621 | /* check that we will be able to route and eroute */ |
| 2622 | switch (could_route(c, st->st_logger)) { |
| 2623 | case route_easy: |
| 2624 | case route_nearconflict: |
| 2625 | dbg(" routing is easy, or has resolvable near-conflict"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log(" routing is easy, or has resolvable near-conflict" ); } }; |
| 2626 | break; |
| 2627 | |
| 2628 | case route_unnecessary: |
| 2629 | /* |
| 2630 | * in this situation, we should look and see if there is |
| 2631 | * a state that our connection references, that we are |
| 2632 | * in fact replacing. |
| 2633 | */ |
| 2634 | break; |
| 2635 | |
| 2636 | default: |
| 2637 | return FALSE0; |
| 2638 | } |
| 2639 | |
| 2640 | look_for_replacement_state(st); |
| 2641 | |
| 2642 | /* |
| 2643 | * we now have to set up the outgoing SA first, so that |
| 2644 | * we can refer to it in the incoming SA. |
| 2645 | */ |
| 2646 | if (st->st_ref_peer == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && !st->st_outbound_done) { |
| 2647 | dbg("installing outgoing SA now as ref_peer=%u", st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("installing outgoing SA now as ref_peer=%u", st ->st_ref_peer); } }; |
| 2648 | if (!setup_half_ipsec_sa(st, FALSE0)) { |
| 2649 | DBG_log("failed to install outgoing SA: %u", |
| 2650 | st->st_ref_peer); |
| 2651 | return FALSE0; |
| 2652 | } |
| 2653 | |
| 2654 | st->st_outbound_done = TRUE1; |
| 2655 | } |
| 2656 | dbg("outgoing SA has ref_peer=%u", st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("outgoing SA has ref_peer=%u", st->st_ref_peer ); } }; |
| 2657 | |
| 2658 | /* (attempt to) actually set up the SAs */ |
| 2659 | |
| 2660 | return setup_half_ipsec_sa(st, TRUE1); |
| 2661 | } |
| 2662 | |
| 2663 | /* Install a route and then a prospective shunt eroute or an SA group eroute. |
| 2664 | * Assumption: could_route gave a go-ahead. |
| 2665 | * Any SA Group must have already been created. |
| 2666 | * On failure, steps will be unwound. |
| 2667 | */ |
| 2668 | bool_Bool route_and_eroute(struct connection *c, |
| 2669 | struct spd_route *sr, |
| 2670 | struct state *st) |
| 2671 | { |
| 2672 | dbg("route_and_eroute() for proto %d, and source port %d dest port %d",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route_and_eroute() for proto %d, and source port %d dest port %d" , sr->this.protocol, sr->this.port, sr->that.port); } } |
| 2673 | sr->this.protocol, sr->this.port, sr->that.port){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route_and_eroute() for proto %d, and source port %d dest port %d" , sr->this.protocol, sr->this.port, sr->that.port); } }; |
| 2674 | setportof(htons(sr->this.port), &sr->this.client.addr){ *(&sr->this.client.addr) = set_endpoint_hport((& sr->this.client.addr), ntohs(htons(sr->this.port))); }; |
| 2675 | setportof(htons(sr->that.port), &sr->that.client.addr){ *(&sr->that.client.addr) = set_endpoint_hport((& sr->that.client.addr), ntohs(htons(sr->that.port))); }; |
| 2676 | |
| 2677 | struct spd_route *esr, *rosr; |
| 2678 | struct connection *ero, |
| 2679 | *ro = route_owner(c, sr, &rosr, &ero, &esr); /* who, if anyone, owns our eroute? */ |
| 2680 | |
| 2681 | dbg("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("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); } } |
| 2682 | c->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2683 | (c->policy_next ? c->policy_next->name : "none"),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2684 | ero == NULL ? "null" : ero->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2685 | esr,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2686 | ro == NULL ? "null" : ro->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2687 | rosr,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2688 | st == NULL ? 0 : st->st_serialno){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } }; |
| 2689 | |
| 2690 | /* look along the chain of policies for same one */ |
| 2691 | |
| 2692 | /* we should look for dest port as well? */ |
| 2693 | /* ports are now switched to the ones in this.client / that.client ??????? */ |
| 2694 | /* but port set is sr->this.port and sr.that.port ! */ |
| 2695 | struct bare_shunt **bspp = (ero == NULL((void*)0)) ? |
| 2696 | bare_shunt_ptr(&sr->this.client, &sr->that.client, sr->this.protocol) : |
| 2697 | NULL((void*)0); |
| 2698 | |
| 2699 | /* install the eroute */ |
| 2700 | |
| 2701 | bool_Bool eroute_installed = FALSE0; |
| 2702 | |
| 2703 | #ifdef IPSEC_CONNECTION_LIMIT |
| 2704 | bool_Bool new_eroute = FALSE0; |
| 2705 | #endif |
| 2706 | |
| 2707 | passert(bspp == NULL || ero == NULL){ _Bool assertion__ = bspp == ((void*)0) || ero == ((void*)0) ; if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 2707}, "%s", "bspp == NULL || ero == NULL" ); } }; /* only one non-NULL */ |
| 2708 | |
| 2709 | if (bspp != NULL((void*)0) || ero != NULL((void*)0)) { |
| 2710 | dbg("we are replacing an eroute"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("we are replacing an eroute"); } }; |
| 2711 | /* if no state provided, then install a shunt for later */ |
| 2712 | if (st == NULL((void*)0)) { |
| 2713 | eroute_installed = shunt_eroute(c, sr, |
| 2714 | RT_ROUTED_PROSPECTIVE, |
| 2715 | ERO_REPLACE, |
| 2716 | "replace"); |
| 2717 | } else { |
| 2718 | eroute_installed = sag_eroute(st, sr, ERO_REPLACE, |
| 2719 | "replace"); |
| 2720 | } |
| 2721 | |
| 2722 | /* remember to free bspp if we make it out of here alive */ |
| 2723 | } else { |
| 2724 | /* we're adding an eroute */ |
| 2725 | #ifdef IPSEC_CONNECTION_LIMIT |
| 2726 | if (num_ipsec_eroute == IPSEC_CONNECTION_LIMIT) { |
| 2727 | loglog(RC_LOG_SERIOUS, |
| 2728 | "Maximum number of IPsec connections reached (%d)", |
| 2729 | IPSEC_CONNECTION_LIMIT); |
| 2730 | return FALSE0; |
| 2731 | } |
| 2732 | new_eroute = TRUE1; |
| 2733 | #endif |
| 2734 | |
| 2735 | /* if no state provided, then install a shunt for later */ |
| 2736 | if (st == NULL((void*)0)) { |
| 2737 | eroute_installed = shunt_eroute(c, sr, |
| 2738 | RT_ROUTED_PROSPECTIVE, |
| 2739 | ERO_ADD, "add"); |
| 2740 | } else { |
| 2741 | eroute_installed = sag_eroute(st, sr, ERO_ADD, "add"); |
| 2742 | } |
| 2743 | } |
| 2744 | |
| 2745 | /* notify the firewall of a new tunnel */ |
| 2746 | |
| 2747 | bool_Bool firewall_notified = FALSE0; |
| 2748 | |
| 2749 | if (eroute_installed) { |
| 2750 | /* |
| 2751 | * do we have to notify the firewall? |
| 2752 | * Yes, if we are installing |
| 2753 | * a tunnel eroute and the firewall wasn't notified |
| 2754 | * for a previous tunnel with the same clients. Any Previous |
| 2755 | * tunnel would have to be for our connection, so the actual |
| 2756 | * test is simple. |
| 2757 | */ |
| 2758 | firewall_notified = st == NULL((void*)0) || /* not a tunnel eroute */ |
| 2759 | sr->eroute_owner != SOS_NOBODY0 || /* already notified */ |
| 2760 | do_command(c, sr, "up", st); /* go ahead and notify */ |
| 2761 | } |
| 2762 | |
| 2763 | /* install the route */ |
| 2764 | |
| 2765 | bool_Bool route_installed = FALSE0; |
| 2766 | |
| 2767 | dbg("route_and_eroute: firewall_notified: %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route_and_eroute: firewall_notified: %s", firewall_notified ? "true" : "false"); } } |
| 2768 | firewall_notified ? "true" : "false"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route_and_eroute: firewall_notified: %s", firewall_notified ? "true" : "false"); } }; |
| 2769 | if (!firewall_notified) { |
| 2770 | /* we're in trouble -- don't do routing */ |
| 2771 | } else if (ro == NULL((void*)0)) { |
| 2772 | /* a new route: no deletion required, but preparation is */ |
| 2773 | if (!do_command(c, sr, "prepare", st)) |
| 2774 | dbg("prepare command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("prepare command returned an error"); } }; |
| 2775 | route_installed = do_command(c, sr, "route", st); |
| 2776 | if (!route_installed) |
| 2777 | dbg("route command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route command returned an error"); } }; |
| 2778 | } else if (routed(sr->routing)((sr->routing) > RT_UNROUTED_HOLD) || |
| 2779 | routes_agree(ro, c)((ro)->interface->ip_dev == (c)->interface->ip_dev && sameaddr(&(ro)->spd.this.host_nexthop, & (c)->spd.this.host_nexthop))) { |
| 2780 | route_installed = TRUE1; /* nothing to be done */ |
| 2781 | } else { |
| 2782 | /* |
| 2783 | * Some other connection must own the route |
| 2784 | * and the route must disagree. But since could_route |
| 2785 | * must have allowed our stealing it, we'll do so. |
| 2786 | * |
| 2787 | * A feature of LINUX allows us to install the new route |
| 2788 | * before deleting the old if the nexthops differ. |
| 2789 | * This reduces the "window of vulnerability" when packets |
| 2790 | * might flow in the clear. |
| 2791 | */ |
| 2792 | if (sameaddr(&sr->this.host_nexthop, |
| 2793 | &esr->this.host_nexthop)) { |
| 2794 | if (!do_command(ro, sr, "unroute", st)) { |
| 2795 | dbg("unroute command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("unroute command returned an error"); } }; |
| 2796 | } |
| 2797 | route_installed = do_command(c, sr, "route", st); |
| 2798 | if (!route_installed) |
| 2799 | dbg("route command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route command returned an error"); } }; |
| 2800 | } else { |
| 2801 | route_installed = do_command(c, sr, "route", st); |
| 2802 | if (!route_installed) |
| 2803 | dbg("route command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("route command returned an error"); } }; |
| 2804 | |
| 2805 | if (!do_command(ro, sr, "unroute", st)) { |
| 2806 | dbg("unroute command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("unroute command returned an error"); } }; |
| 2807 | } |
| 2808 | } |
| 2809 | |
| 2810 | /* record unrouting */ |
| 2811 | if (route_installed) { |
| 2812 | do { |
| 2813 | dbg("installed route: ro name=%s, rosr->routing=%d", ro->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("installed route: ro name=%s, rosr->routing=%d" , ro->name, rosr->routing); } } |
| 2814 | rosr->routing){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("installed route: ro name=%s, rosr->routing=%d" , ro->name, rosr->routing); } }; |
| 2815 | pexpect(!erouted(rosr->routing))({ _Bool assertion__ = !((rosr->routing) != RT_UNROUTED); if (!assertion__) { log_pexpect((where_t) { .func = __func__, . basename = "kernel.c" , .line = 2815}, "%s", "!erouted(rosr->routing)" ); } assertion__; }); /* warn for now - requires fixing */ |
| 2816 | rosr->routing = RT_UNROUTED; |
| 2817 | |
| 2818 | /* no need to keep old value */ |
| 2819 | ro = route_owner(c, sr, &rosr, NULL((void*)0), NULL((void*)0)); |
| 2820 | } while (ro != NULL((void*)0)); |
| 2821 | } |
| 2822 | } |
| 2823 | |
| 2824 | /* all done -- clean up */ |
| 2825 | if (route_installed) { |
| 2826 | /* Success! */ |
| 2827 | |
| 2828 | if (bspp != NULL((void*)0)) { |
| 2829 | free_bare_shunt(bspp); |
| 2830 | } else if (ero != NULL((void*)0) && ero != c) { |
| 2831 | /* check if ero is an ancestor of c. */ |
| 2832 | struct connection *ero2; |
| 2833 | |
| 2834 | for (ero2 = c; ero2 != NULL((void*)0) && ero2 != c; |
| 2835 | ero2 = ero2->policy_next) |
| 2836 | ; |
| 2837 | |
| 2838 | if (ero2 == NULL((void*)0)) { |
| 2839 | /* |
| 2840 | * By elimination, we must be eclipsing ero. |
| 2841 | * Checked above. |
| 2842 | */ |
| 2843 | if (ero->spd.routing != RT_ROUTED_ECLIPSED) { |
| 2844 | ero->spd.routing = RT_ROUTED_ECLIPSED; |
| 2845 | eclipse_count++; |
| 2846 | } |
| 2847 | } |
| 2848 | } |
| 2849 | |
| 2850 | if (st == NULL((void*)0)) { |
| 2851 | passert(sr->eroute_owner == SOS_NOBODY){ _Bool assertion__ = sr->eroute_owner == 0; if (!assertion__ ) { lsw_passert_fail((where_t) { .func = __func__, .basename = "kernel.c" , .line = 2851}, "%s", "sr->eroute_owner == SOS_NOBODY" ); } }; |
| 2852 | sr->routing = RT_ROUTED_PROSPECTIVE; |
| 2853 | } else { |
| 2854 | sr->routing = RT_ROUTED_TUNNEL; |
| 2855 | connection_buf cib; |
| 2856 | dbg("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("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); } } |
| 2857 | pri_connection(st->st_connection, &cib),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2858 | &st->st_connection->spd, sr,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2859 | st->st_serialno,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2860 | sr->eroute_owner,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } } |
| 2861 | st->st_connection->newest_ipsec_sa){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } }; |
| 2862 | sr->eroute_owner = st->st_serialno; |
| 2863 | /* clear host shunts that clash with freshly installed route */ |
| 2864 | clear_narrow_holds(&sr->this.client, &sr->that.client, |
| 2865 | sr->this.protocol); |
| 2866 | } |
| 2867 | |
| 2868 | #ifdef IPSEC_CONNECTION_LIMIT |
| 2869 | if (new_eroute) { |
| 2870 | num_ipsec_eroute++; |
| 2871 | loglog(RC_COMMENT, |
| 2872 | "%d IPsec connections are currently being managed", |
| 2873 | num_ipsec_eroute); |
| 2874 | } |
| 2875 | #endif |
| 2876 | |
| 2877 | return TRUE1; |
| 2878 | } else { |
| 2879 | /* Failure! Unwind our work. */ |
| 2880 | if (firewall_notified && sr->eroute_owner == SOS_NOBODY0) { |
| 2881 | if (!do_command(c, sr, "down", st)) |
| 2882 | dbg("down command returned an error"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("down command returned an error"); } }; |
| 2883 | } |
| 2884 | |
| 2885 | if (eroute_installed) { |
| 2886 | /* |
| 2887 | * Restore original eroute, if we can. |
| 2888 | * Since there is nothing much to be done if |
| 2889 | * the restoration fails, ignore success or failure. |
| 2890 | */ |
| 2891 | if (bspp != NULL((void*)0)) { |
| 2892 | /* |
| 2893 | * Restore old bare_shunt. |
| 2894 | * I don't think that this case is very likely. |
| 2895 | * Normally a bare shunt would have been |
| 2896 | * assigned to a connection before we've |
| 2897 | * gotten this far. |
| 2898 | */ |
| 2899 | struct bare_shunt *bs = *bspp; |
| 2900 | |
| 2901 | if (!raw_eroute(&bs->said.dst, /* should be useless */ |
| 2902 | &bs->our_client, |
| 2903 | &bs->said.dst, /* should be useless */ |
| 2904 | &bs->peer_client, |
| 2905 | bs->said.spi, /* unused? network order */ |
| 2906 | bs->said.spi, /* network order */ |
| 2907 | &ip_protocol_internal, /* proto */ |
| 2908 | sr->this.protocol, /* transport_proto */ |
| 2909 | ET_INT, |
| 2910 | null_proto_info, |
| 2911 | deltatime(SHUNT_PATIENCE((2 * 10) * 15 / 2)), |
| 2912 | calculate_sa_prio(c, FALSE0), |
| 2913 | NULL((void*)0), |
| 2914 | 0, |
| 2915 | ERO_REPLACE, |
| 2916 | "restore", |
| 2917 | NULL((void*)0))) /* bare shunt are not associated with any connection so no security label */ |
| 2918 | { |
| 2919 | libreswan_log("raw_eroute() in route_and_eroute() failed to restore/replace SA")loglog(RC_LOG, "raw_eroute() in route_and_eroute() failed to restore/replace SA" ); |
| 2920 | } |
| 2921 | } else if (ero != NULL((void*)0)) { |
| 2922 | passert(esr != NULL){ _Bool assertion__ = esr != ((void*)0); if (!assertion__) { lsw_passert_fail ((where_t) { .func = __func__, .basename = "kernel.c" , .line = 2922}, "%s", "esr != NULL"); } }; |
| 2923 | /* restore ero's former glory */ |
| 2924 | if (esr->eroute_owner == SOS_NOBODY0) { |
| 2925 | /* note: normal or eclipse case */ |
| 2926 | if (!shunt_eroute(ero, esr, |
| 2927 | esr->routing, |
| 2928 | ERO_REPLACE, |
| 2929 | "restore")) { |
| 2930 | libreswan_log("shunt_eroute() in route_and_eroute() failed restore/replace")loglog(RC_LOG, "shunt_eroute() in route_and_eroute() failed restore/replace" ); |
| 2931 | } |
| 2932 | } else { |
| 2933 | /* |
| 2934 | * Try to find state that owned eroute. |
| 2935 | * Don't do anything if it cannot be |
| 2936 | * found. |
| 2937 | * This case isn't likely since we |
| 2938 | * don't run the updown script when |
| 2939 | * replacing a SA group with its |
| 2940 | * successor (for the same conn). |
| 2941 | */ |
| 2942 | struct state *ost = |
| 2943 | state_with_serialno( |
| 2944 | esr->eroute_owner); |
| 2945 | |
| 2946 | if (ost != NULL((void*)0)) { |
| 2947 | if (!sag_eroute(ost, esr, |
| 2948 | ERO_REPLACE, |
| 2949 | "restore")) |
| 2950 | libreswan_log("sag_eroute() in route_and_eroute() failed restore/replace")loglog(RC_LOG, "sag_eroute() in route_and_eroute() failed restore/replace" ); |
| 2951 | } |
| 2952 | } |
| 2953 | } else { |
| 2954 | /* there was no previous eroute: delete whatever we installed */ |
| 2955 | if (st == NULL((void*)0)) { |
| 2956 | if (!shunt_eroute(c, sr, |
| 2957 | sr->routing, |
| 2958 | ERO_DELETE, |
| 2959 | "delete")) { |
| 2960 | libreswan_log("shunt_eroute() in route_and_eroute() failed in !st case for delete")loglog(RC_LOG, "shunt_eroute() in route_and_eroute() failed in !st case for delete" ); |
| 2961 | } |
| 2962 | } else { |
| 2963 | if (!sag_eroute(st, sr, |
| 2964 | ERO_DELETE, |
| 2965 | "delete")) { |
| 2966 | libreswan_log("shunt_eroute() in route_and_eroute() failed in st case for delete")loglog(RC_LOG, "shunt_eroute() in route_and_eroute() failed in st case for delete" ); |
| 2967 | } |
| 2968 | } |
| 2969 | } |
| 2970 | } |
| 2971 | |
| 2972 | return FALSE0; |
| 2973 | } |
| 2974 | } |
| 2975 | |
| 2976 | bool_Bool install_ipsec_sa(struct state *st, bool_Bool inbound_also) |
| 2977 | { |
| 2978 | dbg("install_ipsec_sa() for #%lu: %s", st->st_serialno,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("install_ipsec_sa() for #%lu: %s", st->st_serialno , inbound_also ? "inbound and outbound" : "outbound only"); } } |
| 2979 | inbound_also ? "inbound and outbound" : "outbound only"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("install_ipsec_sa() for #%lu: %s", st->st_serialno , inbound_also ? "inbound and outbound" : "outbound only"); } }; |
| 2980 | |
| 2981 | enum routability rb = could_route(st->st_connection, st->st_logger); |
| 2982 | |
| 2983 | switch (rb) { |
| 2984 | case route_easy: |
| 2985 | case route_unnecessary: |
| 2986 | case route_nearconflict: |
| 2987 | break; |
| 2988 | |
| 2989 | default: |
| 2990 | return false0; |
| 2991 | } |
| 2992 | |
| 2993 | /* (attempt to) actually set up the SA group */ |
| 2994 | |
| 2995 | /* setup outgoing SA if we haven't already */ |
| 2996 | if (!st->st_outbound_done) { |
| 2997 | if (!setup_half_ipsec_sa(st, FALSE0)) { |
| 2998 | return FALSE0; |
| 2999 | } |
| 3000 | |
| 3001 | dbg("set up outgoing SA, ref=%u/%u", st->st_ref,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("set up outgoing SA, ref=%u/%u", st->st_ref , st->st_ref_peer); } } |
| 3002 | st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("set up outgoing SA, ref=%u/%u", st->st_ref , st->st_ref_peer); } }; |
| 3003 | st->st_outbound_done = TRUE1; |
| 3004 | } |
| 3005 | |
| 3006 | /* now setup inbound SA */ |
| 3007 | if (st->st_ref == IPSEC_SAREF_NULL((IPsecSAref_t)0u) && inbound_also) { |
| 3008 | if (!setup_half_ipsec_sa(st, TRUE1)) |
| 3009 | return FALSE0; |
| 3010 | |
| 3011 | dbg("set up incoming SA, ref=%u/%u", st->st_ref,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("set up incoming SA, ref=%u/%u", st->st_ref , st->st_ref_peer); } } |
| 3012 | st->st_ref_peer){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("set up incoming SA, ref=%u/%u", st->st_ref , st->st_ref_peer); } }; |
| 3013 | |
| 3014 | /* |
| 3015 | * We successfully installed an IPsec SA, meaning it is safe |
| 3016 | * to clear our revival back-off delay. This is based on the |
| 3017 | * assumption that an unwilling partner might complete an IKE |
| 3018 | * SA to us, but won't complete an IPsec SA to us. |
| 3019 | */ |
| 3020 | st->st_connection->temp_vars.revive_delay = 0; |
| 3021 | } |
| 3022 | |
| 3023 | if (rb == route_unnecessary) |
| 3024 | return TRUE1; |
| 3025 | |
| 3026 | struct spd_route *sr = &st->st_connection->spd; |
| 3027 | |
| 3028 | if (st->st_connection->remotepeertype == CISCO && sr->spd_next != NULL((void*)0)) |
| 3029 | sr = sr->spd_next; |
| 3030 | |
| 3031 | /* for (sr = &st->st_connection->spd; sr != NULL; sr = sr->next) */ |
| 3032 | for (; sr != NULL((void*)0); sr = sr->spd_next) { |
| 3033 | dbg("sr for #%lu: %s", st->st_serialno,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("sr for #%lu: %s", st->st_serialno, enum_name (&routing_story, sr->routing)); } } |
| 3034 | enum_name(&routing_story, sr->routing)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("sr for #%lu: %s", st->st_serialno, enum_name (&routing_story, sr->routing)); } }; |
| 3035 | |
| 3036 | /* |
| 3037 | * if the eroute owner is not us, then make it us. |
| 3038 | * See test co-terminal-02, pluto-rekey-01, |
| 3039 | * pluto-unit-02/oppo-twice |
| 3040 | */ |
| 3041 | pexpect(sr->eroute_owner == SOS_NOBODY ||({ _Bool assertion__ = sr->eroute_owner == 0 || sr->routing >= RT_ROUTED_TUNNEL; if (!assertion__) { log_pexpect((where_t ) { .func = __func__, .basename = "kernel.c" , .line = 3042}, "%s", "sr->eroute_owner == SOS_NOBODY || sr->routing >= RT_ROUTED_TUNNEL" ); } assertion__; }) |
| 3042 | sr->routing >= RT_ROUTED_TUNNEL)({ _Bool assertion__ = sr->eroute_owner == 0 || sr->routing >= RT_ROUTED_TUNNEL; if (!assertion__) { log_pexpect((where_t ) { .func = __func__, .basename = "kernel.c" , .line = 3042}, "%s", "sr->eroute_owner == SOS_NOBODY || sr->routing >= RT_ROUTED_TUNNEL" ); } assertion__; }); |
| 3043 | |
| 3044 | if (sr->eroute_owner != st->st_serialno && |
| 3045 | sr->routing != RT_UNROUTED_KEYED) { |
| 3046 | if (!route_and_eroute(st->st_connection, sr, st)) { |
| 3047 | delete_ipsec_sa(st); |
| 3048 | /* |
| 3049 | * XXX go and unroute any SRs that were |
| 3050 | * successfully routed already. |
| 3051 | */ |
| 3052 | return false0; |
| 3053 | } |
| 3054 | } |
| 3055 | } |
| 3056 | |
| 3057 | /* XXX why is this needed? Skip the bogus original conn? */ |
| 3058 | if (st->st_connection->remotepeertype == CISCO) { |
| 3059 | struct spd_route *srcisco = st->st_connection->spd.spd_next; |
| 3060 | |
| 3061 | if (srcisco != NULL((void*)0)) { |
| 3062 | st->st_connection->spd.eroute_owner = srcisco->eroute_owner; |
| 3063 | st->st_connection->spd.routing = srcisco->routing; |
| 3064 | } |
| 3065 | } |
| 3066 | |
| 3067 | if (inbound_also) |
| 3068 | linux_audit_conn(st, LAK_CHILD_START); |
| 3069 | return true1; |
| 3070 | } |
| 3071 | |
| 3072 | bool_Bool migrate_ipsec_sa(struct state *st) |
| 3073 | { |
| 3074 | switch (kernel_ops->type) { |
| 3075 | case USE_XFRM: |
| 3076 | /* support ah? if(!st->st_esp.present && !st->st_ah.present)) */ |
| 3077 | if (!st->st_esp.present) { |
| 3078 | libreswan_log("mobike SA migration only support ESP SA")loglog(RC_LOG, "mobike SA migration only support ESP SA"); |
| 3079 | return FALSE0; |
| 3080 | } |
| 3081 | |
| 3082 | if (!kernel_ops->migrate_sa(st)) |
| 3083 | return FALSE0; |
| 3084 | |
| 3085 | return TRUE1; |
| 3086 | |
| 3087 | default: |
| 3088 | dbg("Usupported kernel stack in migrate_ipsec_sa"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("Usupported kernel stack in migrate_ipsec_sa") ; } }; |
| 3089 | return FALSE0; |
| 3090 | } |
| 3091 | } |
| 3092 | |
| 3093 | /* |
| 3094 | * Delete an IPSEC SA. |
| 3095 | * we may not succeed, but we bull ahead anyway because |
| 3096 | * we cannot do anything better by recognizing failure |
| 3097 | * This used to have a parameter bool inbound_only, but |
| 3098 | * the saref code changed to always install inbound before |
| 3099 | * outbound so this it was always false, and thus removed |
| 3100 | * |
| 3101 | */ |
| 3102 | void delete_ipsec_sa(struct state *st) |
| 3103 | { |
| 3104 | /* XXX in IKEv2 we get a spurious call with a parent st :( */ |
| 3105 | if (IS_CHILD_SA(st)((st)->st_clonedfrom != 0)) { |
| 3106 | if (st->st_esp.present || st->st_ah.present) { |
| 3107 | /* ESP or AH means this was an established IPsec SA */ |
| 3108 | linux_audit_conn(st, LAK_CHILD_DESTROY); |
| 3109 | } |
| 3110 | } else { |
| 3111 | libreswan_log("delete_ipsec_sa() called with (wrong?) parent state %s",loglog(RC_LOG, "delete_ipsec_sa() called with (wrong?) parent state %s" , st->st_state->name) |
| 3112 | st->st_state->name)loglog(RC_LOG, "delete_ipsec_sa() called with (wrong?) parent state %s" , st->st_state->name); |
| 3113 | } |
| 3114 | |
| 3115 | switch (kernel_ops->type) { |
| 3116 | case USE_XFRM: |
| 3117 | { |
| 3118 | /* |
| 3119 | * If the state is the eroute owner, we must adjust |
| 3120 | * the routing for the connection. |
| 3121 | */ |
| 3122 | struct connection *c = st->st_connection; |
| 3123 | struct spd_route *sr; |
| 3124 | |
| 3125 | for (sr = &c->spd; sr; sr = sr->spd_next) { |
| 3126 | if (sr->eroute_owner == st->st_serialno && |
| 3127 | sr->routing == RT_ROUTED_TUNNEL) { |
| 3128 | sr->eroute_owner = SOS_NOBODY0; |
| 3129 | |
| 3130 | /* |
| 3131 | * Routing should become |
| 3132 | * RT_ROUTED_FAILURE, |
| 3133 | * but if POLICY_FAIL_NONE, then we |
| 3134 | * just go right back to |
| 3135 | * RT_ROUTED_PROSPECTIVE as if no |
| 3136 | * failure happened. |
| 3137 | */ |
| 3138 | sr->routing = |
| 3139 | (c->policy & |
| 3140 | POLICY_FAIL_MASK(((lset_t)1 << (POLICY_FAIL1_IX)) - ((lset_t)1 << (POLICY_FAIL0_IX)) + ((lset_t)1 << (POLICY_FAIL1_IX)))) == |
| 3141 | POLICY_FAIL_NONE(0 * ((lset_t)1 << (POLICY_FAIL0_IX))) ? |
| 3142 | RT_ROUTED_PROSPECTIVE : |
| 3143 | RT_ROUTED_FAILURE; |
| 3144 | |
| 3145 | if (sr == &c->spd && |
| 3146 | c->remotepeertype == CISCO) |
| 3147 | continue; |
| 3148 | |
| 3149 | (void) do_command(c, sr, "down", st); |
| 3150 | if ((c->policy & POLICY_OPPORTUNISTIC((lset_t)1 << (POLICY_OPPORTUNISTIC_IX))) && |
| 3151 | c->kind == CK_INSTANCE) { |
| 3152 | /* |
| 3153 | * in this case we get rid of |
| 3154 | * the IPSEC SA |
| 3155 | */ |
| 3156 | unroute_connection(c); |
| 3157 | } else if ((c->policy & POLICY_DONT_REKEY((lset_t)1 << (POLICY_DONT_REKEY_IX))) && |
| 3158 | c->kind == CK_INSTANCE) { |
| 3159 | /* |
| 3160 | * in this special case, |
| 3161 | * even if the connection |
| 3162 | * is still alive (due to |
| 3163 | * an ISAKMP SA), |
| 3164 | * we get rid of routing. |
| 3165 | * Even though there is still |
| 3166 | * an eroute, the c->routing |
| 3167 | * setting will convince |
| 3168 | * unroute_connection to |
| 3169 | * delete it. |
| 3170 | * unroute_connection |
| 3171 | * would be upset |
| 3172 | * if c->routing == |
| 3173 | * RT_ROUTED_TUNNEL |
| 3174 | */ |
| 3175 | unroute_connection(c); |
| 3176 | } else { |
| 3177 | if (!shunt_eroute(c, sr, |
| 3178 | sr->routing, |
| 3179 | ERO_REPLACE, |
| 3180 | "replace with shunt")) { |
| 3181 | libreswan_log("shunt_eroute() failed replace with shunt in delete_ipsec_sa()")loglog(RC_LOG, "shunt_eroute() failed replace with shunt in delete_ipsec_sa()" ); |
| 3182 | } |
| 3183 | } |
| 3184 | } |
| 3185 | } |
| 3186 | (void) teardown_half_ipsec_sa(st, FALSE0); |
| 3187 | } |
| 3188 | (void) teardown_half_ipsec_sa(st, TRUE1); |
| 3189 | |
| 3190 | break; |
| 3191 | default: |
| 3192 | dbg("unknown kernel stack in delete_ipsec_sa"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("unknown kernel stack in delete_ipsec_sa"); } }; |
| 3193 | break; |
| 3194 | } /* switch kernel_ops->type */ |
| 3195 | } |
| 3196 | |
| 3197 | bool_Bool was_eroute_idle(struct state *st, deltatime_t since_when) |
| 3198 | { |
| 3199 | if (kernel_ops->eroute_idle != NULL((void*)0)) |
| 3200 | return kernel_ops->eroute_idle(st, since_when); |
| 3201 | |
| 3202 | /* it is never idle if we can't check */ |
| 3203 | return FALSE0; |
| 3204 | } |
| 3205 | |
| 3206 | /* |
| 3207 | * get information about a given sa - needs merging with was_eroute_idle |
| 3208 | * |
| 3209 | * Note: this mutates *st. |
| 3210 | */ |
| 3211 | bool_Bool get_sa_info(struct state *st, bool_Bool inbound, deltatime_t *ago /* OUTPUT */) |
| 3212 | { |
| 3213 | struct connection *const c = st->st_connection; |
| 3214 | |
| 3215 | if (kernel_ops->get_sa == NULL((void*)0) || (!st->st_esp.present && !st->st_ah.present)) { |
| 3216 | return FALSE0; |
| 3217 | } |
| 3218 | |
| 3219 | const struct ip_protocol *proto; |
| 3220 | struct ipsec_proto_info *p2; |
| 3221 | |
| 3222 | if (st->st_esp.present) { |
| 3223 | proto = &ip_protocol_esp; |
| 3224 | p2 = &st->st_esp; |
| 3225 | } else if (st->st_ah.present) { |
| 3226 | proto = &ip_protocol_ah; |
| 3227 | p2 = &st->st_ah; |
| 3228 | } else { |
| 3229 | return FALSE0; |
| 3230 | } |
| 3231 | |
| 3232 | const ip_address *src, *dst; |
| 3233 | ipsec_spi_t spi; |
| 3234 | bool_Bool redirected = FALSE0; |
| 3235 | ip_address tmp_ip; |
| 3236 | |
| 3237 | /* |
| 3238 | * if we were redirected (using the REDIRECT |
| 3239 | * mechanism), change |
| 3240 | * spd.that.host_addr temporarily, we reset |
| 3241 | * it back later |
| 3242 | */ |
| 3243 | if (!sameaddr(&st->st_remote_endpoint, &c->spd.that.host_addr) && |
| 3244 | address_is_specified(&c->temp_vars.redirect_ip)) { |
| 3245 | redirected = TRUE1; |
| 3246 | tmp_ip = c->spd.that.host_addr; |
| 3247 | tmp_ip.version = c->spd.that.host_addr.version; |
| 3248 | tmp_ip.hport = c->spd.that.host_addr.hport; |
| 3249 | c->spd.that.host_addr = st->st_remote_endpoint; |
| 3250 | } |
| 3251 | |
| 3252 | if (inbound) { |
| 3253 | src = &c->spd.that.host_addr; |
| 3254 | dst = &c->spd.this.host_addr; |
| 3255 | spi = p2->our_spi; |
| 3256 | } else { |
| 3257 | src = &c->spd.this.host_addr; |
| 3258 | dst = &c->spd.that.host_addr; |
| 3259 | spi = p2->attrs.spi; |
| 3260 | } |
| 3261 | |
| 3262 | char text_said[SATOT_BUFsizeof(said_buf)]; |
| 3263 | |
| 3264 | set_text_said(text_said, dst, spi, proto); |
| 3265 | |
| 3266 | struct kernel_sa sa = { |
| 3267 | .spi = spi, |
| 3268 | .proto = proto, |
| 3269 | .src.address = src, |
| 3270 | .dst.address = dst, |
| 3271 | .text_said = text_said, |
| 3272 | }; |
| 3273 | |
| 3274 | dbg("get_sa_info %s", text_said){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("get_sa_info %s", text_said); } }; |
| 3275 | |
| 3276 | uint64_t bytes; |
| 3277 | uint64_t add_time; |
| 3278 | |
| 3279 | if (!kernel_ops->get_sa(&sa, &bytes, &add_time)) |
| 3280 | return FALSE0; |
| 3281 | |
| 3282 | p2->add_time = add_time; |
| 3283 | |
| 3284 | /* field has been set? */ |
| 3285 | passert(!is_monotime_epoch(p2->our_lastused)){ _Bool assertion__ = !is_monotime_epoch(p2->our_lastused) ; if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 3285}, "%s", "!is_monotime_epoch(p2->our_lastused)" ); } }; |
| 3286 | passert(!is_monotime_epoch(p2->peer_lastused)){ _Bool assertion__ = !is_monotime_epoch(p2->peer_lastused ); if (!assertion__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 3286}, "%s", "!is_monotime_epoch(p2->peer_lastused)" ); } }; |
| 3287 | |
| 3288 | if (inbound) { |
| 3289 | if (bytes > p2->our_bytes) { |
| 3290 | p2->our_bytes = bytes; |
| 3291 | p2->our_lastused = mononow(); |
| 3292 | } |
| 3293 | if (ago != NULL((void*)0)) |
| 3294 | *ago = monotimediff(mononow(), p2->our_lastused); |
| 3295 | } else { |
| 3296 | if (bytes > p2->peer_bytes) { |
| 3297 | p2->peer_bytes = bytes; |
| 3298 | p2->peer_lastused = mononow(); |
| 3299 | } |
| 3300 | if (ago != NULL((void*)0)) |
| 3301 | *ago = monotimediff(mononow(), p2->peer_lastused); |
| 3302 | } |
| 3303 | |
| 3304 | if (redirected) |
| 3305 | c->spd.that.host_addr = tmp_ip; |
| 3306 | |
| 3307 | return TRUE1; |
| 3308 | } |
| 3309 | |
| 3310 | bool_Bool orphan_holdpass(const struct connection *c, struct spd_route *sr, |
| 3311 | int transport_proto, ipsec_spi_t failure_shunt) |
| 3312 | { |
| 3313 | enum routing_t ro = sr->routing, /* routing, old */ |
| 3314 | rn = ro; /* routing, new */ |
| 3315 | ipsec_spi_t negotiation_shunt = (c->policy & POLICY_NEGO_PASS((lset_t)1 << (POLICY_NEGO_PASS_IX))) ? SPI_PASS256 : SPI_DROP257; |
| 3316 | |
| 3317 | if (negotiation_shunt != failure_shunt ) { |
| 3318 | dbg("failureshunt != negotiationshunt, needs replacing"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("failureshunt != negotiationshunt, needs replacing" ); } }; |
| 3319 | } else { |
| 3320 | dbg("failureshunt == negotiationshunt, no replace needed"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("failureshunt == negotiationshunt, no replace needed" ); } }; |
| 3321 | } |
| 3322 | |
| 3323 | dbg("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("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); } } |
| 3324 | c->name, transport_proto, sr->this.port, sr->that.port){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("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); } }; |
| 3325 | |
| 3326 | 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__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 3327}, "%s", "LHAS(LELEM(CK_PERMANENT) | LELEM(CK_INSTANCE) | LELEM(CK_GOING_AWAY), c->kind)" ); } } |
| 3327 | 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__) { lsw_passert_fail((where_t) { .func = __func__ , .basename = "kernel.c" , .line = 3327}, "%s", "LHAS(LELEM(CK_PERMANENT) | LELEM(CK_INSTANCE) | LELEM(CK_GOING_AWAY), c->kind)" ); } }; |
| 3328 | |
| 3329 | switch (ro) { |
| 3330 | case RT_UNROUTED_HOLD: |
| 3331 | rn = RT_UNROUTED; |
| 3332 | dbg("orphan_holdpass unrouted: hold -> pass"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphan_holdpass unrouted: hold -> pass"); } }; |
| 3333 | break; |
| 3334 | case RT_UNROUTED: |
| 3335 | rn = RT_UNROUTED_HOLD; |
| 3336 | dbg("orphan_holdpass unrouted: pass -> hold"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphan_holdpass unrouted: pass -> hold"); } }; |
| 3337 | break; |
| 3338 | case RT_ROUTED_HOLD: |
| 3339 | rn = RT_ROUTED_PROSPECTIVE; |
| 3340 | dbg("orphan_holdpass routed: hold -> trap (?)"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphan_holdpass routed: hold -> trap (?)") ; } }; |
| 3341 | break; |
| 3342 | default: |
| 3343 | dbg("no routing change needed for ro=%s - negotiation shunt matched failure shunt?",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("no routing change needed for ro=%s - negotiation shunt matched failure shunt?" , enum_name(&routing_story, ro)); } } |
| 3344 | enum_name(&routing_story, ro)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("no routing change needed for ro=%s - negotiation shunt matched failure shunt?" , enum_name(&routing_story, ro)); } }; |
| 3345 | break; |
| 3346 | } |
| 3347 | |
| 3348 | dbg("orphaning holdpass for connection '%s', routing was %s, needs to be %s",{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } } |
| 3349 | c->name,{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } } |
| 3350 | enum_name(&routing_story, ro),{ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } } |
| 3351 | enum_name(&routing_story, rn)){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphaning holdpass for connection '%s', routing was %s, needs to be %s" , c->name, enum_name(&routing_story, ro), enum_name(& routing_story, rn)); } }; |
| 3352 | |
| 3353 | { |
| 3354 | /* are we replacing a bare shunt ? */ |
| 3355 | setportof(htons(sr->this.port), &sr->this.client.addr){ *(&sr->this.client.addr) = set_endpoint_hport((& sr->this.client.addr), ntohs(htons(sr->this.port))); }; |
| 3356 | setportof(htons(sr->that.port), &sr->that.client.addr){ *(&sr->that.client.addr) = set_endpoint_hport((& sr->that.client.addr), ntohs(htons(sr->that.port))); }; |
| 3357 | struct bare_shunt **old = bare_shunt_ptr(&sr->this.client, &sr->that.client, sr->this.protocol); |
| 3358 | |
| 3359 | if (old != NULL((void*)0)) { |
| 3360 | free_bare_shunt(old); |
| 3361 | } |
| 3362 | } |
| 3363 | |
| 3364 | /* create the bare shunt and update kernel policy if needed */ |
| 3365 | { |
| 3366 | struct bare_shunt *bs = alloc_thing(struct bare_shunt, "orphan shunt")((struct bare_shunt*) alloc_bytes(sizeof(struct bare_shunt), ( "orphan shunt"))); |
| 3367 | |
| 3368 | bs->why = "oe-failing"; |
| 3369 | bs->our_client = sr->this.client; |
| 3370 | bs->peer_client = sr->that.client; |
| 3371 | bs->transport_proto = sr->this.protocol; |
| 3372 | bs->policy_prio = BOTTOM_PRIO((policy_prio_t)0); |
| 3373 | |
| 3374 | bs->said = said3(&subnet_type(&sr->this.client)->any_address, |
| 3375 | htonl(negotiation_shunt), &ip_protocol_internal); |
| 3376 | |
| 3377 | bs->count = 0; |
| 3378 | bs->last_activity = mononow(); |
| 3379 | if (strstr(c->name, "/32") != NULL((void*)0) || strstr(c->name, "/128") != NULL((void*)0)) { |
| 3380 | bs->from_cn = clone_str(c->name, "conn name in bare shunt")((c->name) == ((void*)0) ? ((void*)0) : clone_bytes((c-> name), strlen((c->name)) + 1, ("conn name in bare shunt")) ); |
| 3381 | } |
| 3382 | |
| 3383 | bs->next = bare_shunts; |
| 3384 | bare_shunts = bs; |
| 3385 | dbg_bare_shunt("add", bs); |
| 3386 | |
| 3387 | /* update kernel policy if needed */ |
| 3388 | /* This really causes the name to remain "oe-failing", we should be able to update only only the name of the shunt */ |
| 3389 | if (negotiation_shunt != failure_shunt ) { |
| 3390 | dbg("replacing negotiation_shunt with failure_shunt"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("replacing negotiation_shunt with failure_shunt" ); } }; |
| 3391 | if (!replace_bare_shunt(&sr->this.host_addr, &sr->that.host_addr, bs->policy_prio, |
| 3392 | negotiation_shunt, failure_shunt, bs->transport_proto, |
| 3393 | "oe-failed")) { |
| 3394 | libreswan_log("assign_holdpass() failed to update shunt policy")loglog(RC_LOG, "assign_holdpass() failed to update shunt policy" ); |
| 3395 | } |
| 3396 | } else { |
| 3397 | dbg("No need to replace negotiation_shunt with failure_shunt - they are the same"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("No need to replace negotiation_shunt with failure_shunt - they are the same" ); } }; |
| 3398 | } |
| 3399 | } |
| 3400 | |
| 3401 | /* change routing so we don't get cleared out when state/connection dies */ |
| 3402 | sr->routing = rn; |
| 3403 | dbg("orphan_holdpas() done - returning success"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("orphan_holdpas() done - returning success"); } }; |
| 3404 | return TRUE1; |
| 3405 | } |
| 3406 | |
| 3407 | /* XXX move to proper kernel_ops in kernel_netlink */ |
| 3408 | void expire_bare_shunts(void) |
| 3409 | { |
| 3410 | dbg("checking for aged bare shunts from shunt table to expire"){ if ((cur_debugging & (((lset_t)1 << (DBG_BASE_IX) )))) { DBG_log("checking for aged bare shunts from shunt table to expire" ); } }; |
| 3411 | for (struct bare_shunt **bspp = &bare_shunts; *bspp != NULL((void*)0); ) { |
| 3412 | struct bare_shunt *bsp = *bspp; |
| 3413 | time_t age = deltasecs(monotimediff(mononow(), bsp->last_activity)); |
| 3414 | struct connection *c = NULL((void*)0); |
| 3415 | |
| 3416 | if (age > deltasecs(pluto_shunt_lifetime)) { |
| 3417 | dbg_bare_shunt("expiring old", bsp); |
| 3418 | if (bsp->from_cn != NULL((void*)0)) { |
| 3419 | c = conn_by_name(bsp->from_cn, FALSE0); |
| 3420 | if (c != NULL((void*)0)) { |
| 3421 | if (!shunt_eroute(c, &c->spd, RT_ROUTED_PROSPECTIVE, ERO_ADD, "add")) { |
| 3422 | libreswan_log("trap shunt install failed ")loglog(RC_LOG, "trap shunt install failed "); |
| 3423 | } |
| 3424 | } |
| 3425 | } |
| 3426 | if (!delete_bare_shunt(&bsp->our_client.addr, &bsp->peer_client.addr, |
| 3427 | bsp->transport_proto, |
| 3428 | ntohl(bsp->said.spi), |
| 3429 | (bsp->from_cn == NULL((void*)0) ? "expire_bare_shunt" : |
| 3430 | "IGNORE_ON_XFRM: expire_bare_shunt"))) { |
| 3431 | log_global(RC_LOG_SERIOUS, null_fd, "failed to delete bare shunt"){ struct logger log_ = (struct logger) { .where = (where_t) { .func = __func__, .basename = "kernel.c" , .line = 3431}, .global_whackfd = ((struct fd *) ((void*)0)), .object = ((void*)0), .object_vec = &logger_global_vec, }; log_message(RC_LOG_SERIOUS, & log_, "failed to delete bare shunt"); }; |
| 3432 | } |
| 3433 | passert(bsp != *bspp){ _Bool assertion__ = bsp != *bspp; if (!assertion__) { lsw_passert_fail ((where_t) { .func = __func__, .basename = "kernel.c" , .line = 3433}, "%s", "bsp != *bspp"); } }; |
| 3434 | } else { |
| 3435 | dbg_bare_shunt("keeping recent", bsp); |
| 3436 | bspp = &bsp->next; |
| 3437 | } |
| 3438 | } |
| 3439 | } |