1 /* $NetBSD: trivial-rewrite.c,v 1.2 2017/02/14 01:16:48 christos Exp $ */ 2 3 /*++ 4 /* NAME 5 /* trivial-rewrite 8 6 /* SUMMARY 7 /* Postfix address rewriting and resolving daemon 8 /* SYNOPSIS 9 /* \fBtrivial-rewrite\fR [generic Postfix daemon options] 10 /* DESCRIPTION 11 /* The \fBtrivial-rewrite\fR(8) daemon processes three types of client 12 /* service requests: 13 /* .IP "\fBrewrite \fIcontext address\fR" 14 /* Rewrite an address to standard form, according to the 15 /* address rewriting context: 16 /* .RS 17 /* .IP \fBlocal\fR 18 /* Append the domain names specified with \fB$myorigin\fR or 19 /* \fB$mydomain\fR to incomplete addresses; do \fBswap_bangpath\fR 20 /* and \fBallow_percent_hack\fR processing as described below, and 21 /* strip source routed addresses (\fI@site,@site:user@domain\fR) 22 /* to \fIuser@domain\fR form. 23 /* .IP \fBremote\fR 24 /* Append the domain name specified with 25 /* \fB$remote_header_rewrite_domain\fR to incomplete 26 /* addresses. Otherwise the result is identical to that of 27 /* the \fBlocal\fR address rewriting context. This prevents 28 /* Postfix from appending the local domain to spam from poorly 29 /* written remote clients. 30 /* .RE 31 /* .IP "\fBresolve \fIsender\fR \fIaddress\fR" 32 /* Resolve the address to a (\fItransport\fR, \fInexthop\fR, 33 /* \fIrecipient\fR, \fIflags\fR) quadruple. The meaning of 34 /* the results is as follows: 35 /* .RS 36 /* .IP \fItransport\fR 37 /* The delivery agent to use. This is the first field of an entry 38 /* in the \fBmaster.cf\fR file. 39 /* .IP \fInexthop\fR 40 /* The host to send to and optional delivery method information. 41 /* .IP \fIrecipient\fR 42 /* The envelope recipient address that is passed on to \fInexthop\fR. 43 /* .IP \fIflags\fR 44 /* The address class, whether the address requires relaying, 45 /* whether the address has problems, and whether the request failed. 46 /* .RE 47 /* .IP "\fBverify \fIsender\fR \fIaddress\fR" 48 /* Resolve the address for address verification purposes. 49 /* SERVER PROCESS MANAGEMENT 50 /* .ad 51 /* .fi 52 /* The \fBtrivial-rewrite\fR(8) servers run under control by 53 /* the Postfix master 54 /* server. Each server can handle multiple simultaneous connections. 55 /* When all servers are busy while a client connects, the master 56 /* creates a new server process, provided that the trivial-rewrite 57 /* server process limit is not exceeded. 58 /* Each trivial-rewrite server terminates after 59 /* serving at least \fB$max_use\fR clients of after \fB$max_idle\fR 60 /* seconds of idle time. 61 /* STANDARDS 62 /* .ad 63 /* .fi 64 /* None. The command does not interact with the outside world. 65 /* SECURITY 66 /* .ad 67 /* .fi 68 /* The \fBtrivial-rewrite\fR(8) daemon is not security sensitive. 69 /* By default, this daemon does not talk to remote or local users. 70 /* It can run at a fixed low privilege in a chrooted environment. 71 /* DIAGNOSTICS 72 /* Problems and transactions are logged to \fBsyslogd\fR(8). 73 /* CONFIGURATION PARAMETERS 74 /* .ad 75 /* .fi 76 /* On busy mail systems a long time may pass before a \fBmain.cf\fR 77 /* change affecting \fBtrivial-rewrite\fR(8) is picked up. Use the command 78 /* "\fBpostfix reload\fR" to speed up a change. 79 /* 80 /* The text below provides only a parameter summary. See 81 /* \fBpostconf\fR(5) for more details including examples. 82 /* COMPATIBILITY CONTROLS 83 /* .ad 84 /* .fi 85 /* .IP "\fBresolve_dequoted_address (yes)\fR" 86 /* Resolve a recipient address safely instead of correctly, by 87 /* looking inside quotes. 88 /* .PP 89 /* Available with Postfix version 2.1 and later: 90 /* .IP "\fBresolve_null_domain (no)\fR" 91 /* Resolve an address that ends in the "@" null domain as if the 92 /* local hostname were specified, instead of rejecting the address as 93 /* invalid. 94 /* .PP 95 /* Available with Postfix version 2.3 and later: 96 /* .IP "\fBresolve_numeric_domain (no)\fR" 97 /* Resolve "user@ipaddress" as "user@[ipaddress]", instead of 98 /* rejecting the address as invalid. 99 /* .PP 100 /* Available with Postfix version 2.5 and later: 101 /* .IP "\fBallow_min_user (no)\fR" 102 /* Allow a sender or recipient address to have `-' as the first 103 /* character. 104 /* ADDRESS REWRITING CONTROLS 105 /* .ad 106 /* .fi 107 /* .IP "\fBmyorigin ($myhostname)\fR" 108 /* The domain name that locally-posted mail appears to come 109 /* from, and that locally posted mail is delivered to. 110 /* .IP "\fBallow_percent_hack (yes)\fR" 111 /* Enable the rewriting of the form "user%domain" to "user@domain". 112 /* .IP "\fBappend_at_myorigin (yes)\fR" 113 /* With locally submitted mail, append the string "@$myorigin" to mail 114 /* addresses without domain information. 115 /* .IP "\fBappend_dot_mydomain (Postfix >= 3.0: no, Postfix < 3.0: yes)\fR" 116 /* With locally submitted mail, append the string ".$mydomain" to 117 /* addresses that have no ".domain" information. 118 /* .IP "\fBrecipient_delimiter (empty)\fR" 119 /* The set of characters that can separate a user name from its 120 /* extension (example: user+foo), or a .forward file name from its 121 /* extension (example: .forward+foo). 122 /* .IP "\fBswap_bangpath (yes)\fR" 123 /* Enable the rewriting of "site!user" into "user@site". 124 /* .PP 125 /* Available in Postfix 2.2 and later: 126 /* .IP "\fBremote_header_rewrite_domain (empty)\fR" 127 /* Don't rewrite message headers from remote clients at all when 128 /* this parameter is empty; otherwise, rewrite message headers and 129 /* append the specified domain name to incomplete addresses. 130 /* ROUTING CONTROLS 131 /* .ad 132 /* .fi 133 /* The following is applicable to Postfix version 2.0 and later. 134 /* Earlier versions do not have support for: virtual_transport, 135 /* relay_transport, virtual_alias_domains, virtual_mailbox_domains 136 /* or proxy_interfaces. 137 /* .IP "\fBlocal_transport (local:$myhostname)\fR" 138 /* The default mail delivery transport and next-hop destination 139 /* for final delivery to domains listed with mydestination, and for 140 /* [ipaddress] destinations that match $inet_interfaces or $proxy_interfaces. 141 /* .IP "\fBvirtual_transport (virtual)\fR" 142 /* The default mail delivery transport and next-hop destination for 143 /* final delivery to domains listed with $virtual_mailbox_domains. 144 /* .IP "\fBrelay_transport (relay)\fR" 145 /* The default mail delivery transport and next-hop destination for 146 /* remote delivery to domains listed with $relay_domains. 147 /* .IP "\fBdefault_transport (smtp)\fR" 148 /* The default mail delivery transport and next-hop destination for 149 /* destinations that do not match $mydestination, $inet_interfaces, 150 /* $proxy_interfaces, $virtual_alias_domains, $virtual_mailbox_domains, 151 /* or $relay_domains. 152 /* .IP "\fBparent_domain_matches_subdomains (see 'postconf -d' output)\fR" 153 /* A list of Postfix features where the pattern "example.com" also 154 /* matches subdomains of example.com, 155 /* instead of requiring an explicit ".example.com" pattern. 156 /* .IP "\fBrelayhost (empty)\fR" 157 /* The next-hop destination of non-local mail; overrides non-local 158 /* domains in recipient addresses. 159 /* .IP "\fBtransport_maps (empty)\fR" 160 /* Optional lookup tables with mappings from recipient address to 161 /* (message delivery transport, next-hop destination). 162 /* .PP 163 /* Available in Postfix version 2.3 and later: 164 /* .IP "\fBsender_dependent_relayhost_maps (empty)\fR" 165 /* A sender-dependent override for the global relayhost parameter 166 /* setting. 167 /* .PP 168 /* Available in Postfix version 2.5 and later: 169 /* .IP "\fBempty_address_relayhost_maps_lookup_key (<>)\fR" 170 /* The sender_dependent_relayhost_maps search string that will be 171 /* used instead of the null sender address. 172 /* .PP 173 /* Available in Postfix version 2.7 and later: 174 /* .IP "\fBempty_address_default_transport_maps_lookup_key (<>)\fR" 175 /* The sender_dependent_default_transport_maps search string that 176 /* will be used instead of the null sender address. 177 /* .IP "\fBsender_dependent_default_transport_maps (empty)\fR" 178 /* A sender-dependent override for the global default_transport 179 /* parameter setting. 180 /* ADDRESS VERIFICATION CONTROLS 181 /* .ad 182 /* .fi 183 /* Postfix version 2.1 introduces sender and recipient address verification. 184 /* This feature is implemented by sending probe email messages that 185 /* are not actually delivered. 186 /* By default, address verification probes use the same route 187 /* as regular mail. To override specific aspects of message 188 /* routing for address verification probes, specify one or more 189 /* of the following: 190 /* .IP "\fBaddress_verify_local_transport ($local_transport)\fR" 191 /* Overrides the local_transport parameter setting for address 192 /* verification probes. 193 /* .IP "\fBaddress_verify_virtual_transport ($virtual_transport)\fR" 194 /* Overrides the virtual_transport parameter setting for address 195 /* verification probes. 196 /* .IP "\fBaddress_verify_relay_transport ($relay_transport)\fR" 197 /* Overrides the relay_transport parameter setting for address 198 /* verification probes. 199 /* .IP "\fBaddress_verify_default_transport ($default_transport)\fR" 200 /* Overrides the default_transport parameter setting for address 201 /* verification probes. 202 /* .IP "\fBaddress_verify_relayhost ($relayhost)\fR" 203 /* Overrides the relayhost parameter setting for address verification 204 /* probes. 205 /* .IP "\fBaddress_verify_transport_maps ($transport_maps)\fR" 206 /* Overrides the transport_maps parameter setting for address verification 207 /* probes. 208 /* .PP 209 /* Available in Postfix version 2.3 and later: 210 /* .IP "\fBaddress_verify_sender_dependent_relayhost_maps ($sender_dependent_relayhost_maps)\fR" 211 /* Overrides the sender_dependent_relayhost_maps parameter setting for address 212 /* verification probes. 213 /* .PP 214 /* Available in Postfix version 2.7 and later: 215 /* .IP "\fBaddress_verify_sender_dependent_default_transport_maps ($sender_dependent_default_transport_maps)\fR" 216 /* Overrides the sender_dependent_default_transport_maps parameter 217 /* setting for address verification probes. 218 /* MISCELLANEOUS CONTROLS 219 /* .ad 220 /* .fi 221 /* .IP "\fBconfig_directory (see 'postconf -d' output)\fR" 222 /* The default location of the Postfix main.cf and master.cf 223 /* configuration files. 224 /* .IP "\fBdaemon_timeout (18000s)\fR" 225 /* How much time a Postfix daemon process may take to handle a 226 /* request before it is terminated by a built-in watchdog timer. 227 /* .IP "\fBempty_address_recipient (MAILER-DAEMON)\fR" 228 /* The recipient of mail addressed to the null address. 229 /* .IP "\fBipc_timeout (3600s)\fR" 230 /* The time limit for sending or receiving information over an internal 231 /* communication channel. 232 /* .IP "\fBmax_idle (100s)\fR" 233 /* The maximum amount of time that an idle Postfix daemon process waits 234 /* for an incoming connection before terminating voluntarily. 235 /* .IP "\fBmax_use (100)\fR" 236 /* The maximal number of incoming connections that a Postfix daemon 237 /* process will service before terminating voluntarily. 238 /* .IP "\fBrelocated_maps (empty)\fR" 239 /* Optional lookup tables with new contact information for users or 240 /* domains that no longer exist. 241 /* .IP "\fBprocess_id (read-only)\fR" 242 /* The process ID of a Postfix command or daemon process. 243 /* .IP "\fBprocess_name (read-only)\fR" 244 /* The process name of a Postfix command or daemon process. 245 /* .IP "\fBqueue_directory (see 'postconf -d' output)\fR" 246 /* The location of the Postfix top-level queue directory. 247 /* .IP "\fBshow_user_unknown_table_name (yes)\fR" 248 /* Display the name of the recipient table in the "User unknown" 249 /* responses. 250 /* .IP "\fBsyslog_facility (mail)\fR" 251 /* The syslog facility of Postfix logging. 252 /* .IP "\fBsyslog_name (see 'postconf -d' output)\fR" 253 /* The mail system name that is prepended to the process name in syslog 254 /* records, so that "smtpd" becomes, for example, "postfix/smtpd". 255 /* .PP 256 /* Available in Postfix version 2.0 and later: 257 /* .IP "\fBhelpful_warnings (yes)\fR" 258 /* Log warnings about problematic configuration settings, and provide 259 /* helpful suggestions. 260 /* SEE ALSO 261 /* postconf(5), configuration parameters 262 /* transport(5), transport table format 263 /* relocated(5), format of the "user has moved" table 264 /* master(8), process manager 265 /* syslogd(8), system logging 266 /* README FILES 267 /* .ad 268 /* .fi 269 /* Use "\fBpostconf readme_directory\fR" or 270 /* "\fBpostconf html_directory\fR" to locate this information. 271 /* .na 272 /* .nf 273 /* ADDRESS_CLASS_README, Postfix address classes howto 274 /* ADDRESS_VERIFICATION_README, Postfix address verification 275 /* LICENSE 276 /* .ad 277 /* .fi 278 /* The Secure Mailer license must be distributed with this software. 279 /* AUTHOR(S) 280 /* Wietse Venema 281 /* IBM T.J. Watson Research 282 /* P.O. Box 704 283 /* Yorktown Heights, NY 10598, USA 284 /* 285 /* Wietse Venema 286 /* Google, Inc. 287 /* 111 8th Avenue 288 /* New York, NY 10011, USA 289 /*--*/ 290 291 /* System library. */ 292 293 #include <sys_defs.h> 294 #include <unistd.h> 295 #include <stdlib.h> 296 #include <string.h> 297 298 /* Utility library. */ 299 300 #include <msg.h> 301 #include <vstring.h> 302 #include <vstream.h> 303 #include <vstring_vstream.h> 304 #include <split_at.h> 305 #include <stringops.h> 306 #include <dict.h> 307 #include <events.h> 308 309 /* Global library. */ 310 311 #include <mail_params.h> 312 #include <mail_version.h> 313 #include <mail_proto.h> 314 #include <resolve_local.h> 315 #include <mail_conf.h> 316 #include <resolve_clnt.h> 317 #include <rewrite_clnt.h> 318 #include <tok822.h> 319 #include <mail_addr.h> 320 321 /* Multi server skeleton. */ 322 323 #include <mail_server.h> 324 325 /* Application-specific. */ 326 327 #include <trivial-rewrite.h> 328 #include <transport.h> 329 330 static VSTRING *command; 331 332 /* 333 * Tunable parameters. 334 */ 335 char *var_transport_maps; 336 bool var_swap_bangpath; 337 bool var_append_dot_mydomain; 338 bool var_append_at_myorigin; 339 bool var_percent_hack; 340 char *var_local_transport; 341 char *var_virt_transport; 342 char *var_relay_transport; 343 int var_resolve_dequoted; 344 char *var_virt_alias_maps; /* XXX virtual_alias_domains */ 345 char *var_virt_mailbox_maps; /* XXX virtual_mailbox_domains */ 346 char *var_virt_alias_doms; 347 char *var_virt_mailbox_doms; 348 char *var_relocated_maps; 349 char *var_def_transport; 350 char *var_snd_def_xport_maps; 351 char *var_empty_addr; 352 int var_show_unk_rcpt_table; 353 int var_resolve_nulldom; 354 char *var_remote_rwr_domain; 355 char *var_snd_relay_maps; 356 char *var_null_relay_maps_key; 357 char *var_null_def_xport_maps_key; 358 int var_resolve_num_dom; 359 bool var_allow_min_user; 360 361 /* 362 * Shadow personality for address verification. 363 */ 364 char *var_vrfy_xport_maps; 365 char *var_vrfy_local_xport; 366 char *var_vrfy_virt_xport; 367 char *var_vrfy_relay_xport; 368 char *var_vrfy_def_xport; 369 char *var_vrfy_snd_def_xport_maps; 370 char *var_vrfy_relayhost; 371 char *var_vrfy_relay_maps; 372 373 /* 374 * Different resolver personalities depending on the kind of request. 375 */ 376 RES_CONTEXT resolve_regular = { 377 VAR_LOCAL_TRANSPORT, &var_local_transport, 378 VAR_VIRT_TRANSPORT, &var_virt_transport, 379 VAR_RELAY_TRANSPORT, &var_relay_transport, 380 VAR_DEF_TRANSPORT, &var_def_transport, 381 VAR_SND_DEF_XPORT_MAPS, &var_snd_def_xport_maps, 0, 382 VAR_RELAYHOST, &var_relayhost, 383 VAR_SND_RELAY_MAPS, &var_snd_relay_maps, 0, 384 VAR_TRANSPORT_MAPS, &var_transport_maps, 0 385 }; 386 387 RES_CONTEXT resolve_verify = { 388 VAR_VRFY_LOCAL_XPORT, &var_vrfy_local_xport, 389 VAR_VRFY_VIRT_XPORT, &var_vrfy_virt_xport, 390 VAR_VRFY_RELAY_XPORT, &var_vrfy_relay_xport, 391 VAR_VRFY_DEF_XPORT, &var_vrfy_def_xport, 392 VAR_VRFY_SND_DEF_XPORT_MAPS, &var_vrfy_snd_def_xport_maps, 0, 393 VAR_VRFY_RELAYHOST, &var_vrfy_relayhost, 394 VAR_VRFY_RELAY_MAPS, &var_vrfy_relay_maps, 0, 395 VAR_VRFY_XPORT_MAPS, &var_vrfy_xport_maps, 0 396 }; 397 398 /* 399 * Connection management. When file-based lookup tables change we should 400 * restart at our convenience, but avoid client read errors. We restart 401 * rather than reopen, because the process may be chrooted (and if it isn't 402 * we still need code that handles the chrooted case anyway). 403 * 404 * Three variants are implemented. Only one should be used. 405 * 406 * ifdef DETACH_AND_ASK_CLIENTS_TO_RECONNECT 407 * 408 * This code detaches the trivial-rewrite process from the master, stops 409 * accepting new clients, and handles established clients in the background, 410 * asking them to reconnect the next time they send a request. The master 411 * creates a new process that accepts connections. This is reasonably safe 412 * because the number of trivial-rewrite server processes is small compared 413 * to the number of trivial-rewrite client processes. The few extra 414 * background processes should not make a difference in Postfix's footprint. 415 * However, once a daemon detaches from the master, its exit status will be 416 * lost, and abnormal termination may remain undetected. Timely restart is 417 * achieved by checking the table changed status every 10 seconds or so 418 * before responding to a client request. 419 * 420 * ifdef CHECK_TABLE_STATS_PERIODICALLY 421 * 422 * This code runs every 10 seconds and terminates the process when lookup 423 * tables have changed. This is subject to race conditions when established 424 * clients send a request while the server exits; those clients may read EOF 425 * instead of a server reply. If the experience with the oldest option 426 * (below) is anything to go by, however, then this is unlikely to be a 427 * problem during real deployment. 428 * 429 * ifdef CHECK_TABLE_STATS_BEFORE_ACCEPT 430 * 431 * This is the old code. It checks the table changed status when a new client 432 * connects (i.e. before the server calls accept()), and terminates 433 * immediately. This is invisible for the connecting client, but is subject 434 * to race conditions when established clients send a request while the 435 * server exits; those clients may read EOF instead of a server reply. This 436 * has, however, not been a problem in real deployment. With the old code, 437 * timely restart is achieved by setting the ipc_ttl parameter to 60 438 * seconds, so that the table change status is checked several times a 439 * minute. 440 */ 441 int server_flags; 442 443 /* 444 * Define exactly one of these. 445 */ 446 /* #define DETACH_AND_ASK_CLIENTS_TO_RECONNECT /* correct and complex */ 447 #define CHECK_TABLE_STATS_PERIODICALLY /* quick */ 448 /* #define CHECK_TABLE_STATS_BEFORE_ACCEPT /* slow */ 449 450 /* rewrite_service - read request and send reply */ 451 452 static void rewrite_service(VSTREAM *stream, char *unused_service, char **argv) 453 { 454 int status = -1; 455 456 #ifdef DETACH_AND_ASK_CLIENTS_TO_RECONNECT 457 static time_t last; 458 time_t now; 459 const char *table; 460 461 #endif 462 463 /* 464 * Sanity check. This service takes no command-line arguments. 465 */ 466 if (argv[0]) 467 msg_fatal("unexpected command-line argument: %s", argv[0]); 468 469 /* 470 * Client connections are long-lived. Be sure to refesh timely. 471 */ 472 #ifdef DETACH_AND_ASK_CLIENTS_TO_RECONNECT 473 if (server_flags == 0 && (now = event_time()) - last > 10) { 474 if ((table = dict_changed_name()) != 0) { 475 msg_info("table %s has changed -- restarting", table); 476 if (multi_server_drain() == 0) 477 server_flags = 1; 478 } 479 last = now; 480 } 481 #endif 482 483 /* 484 * This routine runs whenever a client connects to the UNIX-domain socket 485 * dedicated to address rewriting. All connection-management stuff is 486 * handled by the common code in multi_server.c. 487 */ 488 if (attr_scan(stream, ATTR_FLAG_STRICT | ATTR_FLAG_MORE, 489 RECV_ATTR_STR(MAIL_ATTR_REQ, command), 490 ATTR_TYPE_END) == 1) { 491 if (strcmp(vstring_str(command), REWRITE_ADDR) == 0) { 492 status = rewrite_proto(stream); 493 } else if (strcmp(vstring_str(command), RESOLVE_REGULAR) == 0) { 494 status = resolve_proto(&resolve_regular, stream); 495 } else if (strcmp(vstring_str(command), RESOLVE_VERIFY) == 0) { 496 status = resolve_proto(&resolve_verify, stream); 497 } else { 498 msg_warn("bad command %.30s", printable(vstring_str(command), '?')); 499 } 500 } 501 if (status < 0) 502 multi_server_disconnect(stream); 503 } 504 505 /* pre_accept - see if tables have changed */ 506 507 #ifdef CHECK_TABLE_STATS_BEFORE_ACCEPT 508 509 static void pre_accept(char *unused_name, char **unused_argv) 510 { 511 const char *table; 512 513 if ((table = dict_changed_name()) != 0) { 514 msg_info("table %s has changed -- restarting", table); 515 exit(0); 516 } 517 } 518 519 #endif 520 521 static void check_table_stats(int unused_event, void *unused_context) 522 { 523 const char *table; 524 525 if ((table = dict_changed_name()) != 0) { 526 msg_info("table %s has changed -- restarting", table); 527 exit(0); 528 } 529 event_request_timer(check_table_stats, (void *) 0, 10); 530 } 531 532 /* pre_jail_init - initialize before entering chroot jail */ 533 534 static void pre_jail_init(char *unused_name, char **unused_argv) 535 { 536 command = vstring_alloc(100); 537 rewrite_init(); 538 resolve_init(); 539 if (*RES_PARAM_VALUE(resolve_regular.transport_maps)) 540 resolve_regular.transport_info = 541 transport_pre_init(resolve_regular.transport_maps_name, 542 RES_PARAM_VALUE(resolve_regular.transport_maps)); 543 if (*RES_PARAM_VALUE(resolve_verify.transport_maps)) 544 resolve_verify.transport_info = 545 transport_pre_init(resolve_verify.transport_maps_name, 546 RES_PARAM_VALUE(resolve_verify.transport_maps)); 547 if (*RES_PARAM_VALUE(resolve_regular.snd_relay_maps)) 548 resolve_regular.snd_relay_info = 549 maps_create(resolve_regular.snd_relay_maps_name, 550 RES_PARAM_VALUE(resolve_regular.snd_relay_maps), 551 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 552 | DICT_FLAG_NO_REGSUB | DICT_FLAG_UTF8_REQUEST); 553 if (*RES_PARAM_VALUE(resolve_verify.snd_relay_maps)) 554 resolve_verify.snd_relay_info = 555 maps_create(resolve_verify.snd_relay_maps_name, 556 RES_PARAM_VALUE(resolve_verify.snd_relay_maps), 557 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 558 | DICT_FLAG_NO_REGSUB | DICT_FLAG_UTF8_REQUEST); 559 if (*RES_PARAM_VALUE(resolve_regular.snd_def_xp_maps)) 560 resolve_regular.snd_def_xp_info = 561 maps_create(resolve_regular.snd_def_xp_maps_name, 562 RES_PARAM_VALUE(resolve_regular.snd_def_xp_maps), 563 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 564 | DICT_FLAG_NO_REGSUB | DICT_FLAG_UTF8_REQUEST); 565 if (*RES_PARAM_VALUE(resolve_verify.snd_def_xp_maps)) 566 resolve_verify.snd_def_xp_info = 567 maps_create(resolve_verify.snd_def_xp_maps_name, 568 RES_PARAM_VALUE(resolve_verify.snd_def_xp_maps), 569 DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX 570 | DICT_FLAG_NO_REGSUB | DICT_FLAG_UTF8_REQUEST); 571 } 572 573 /* post_jail_init - initialize after entering chroot jail */ 574 575 static void post_jail_init(char *unused_name, char **unused_argv) 576 { 577 if (resolve_regular.transport_info) 578 transport_post_init(resolve_regular.transport_info); 579 if (resolve_verify.transport_info) 580 transport_post_init(resolve_verify.transport_info); 581 check_table_stats(0, (void *) 0); 582 } 583 584 MAIL_VERSION_STAMP_DECLARE; 585 586 /* main - pass control to the multi-threaded skeleton code */ 587 588 int main(int argc, char **argv) 589 { 590 static const CONFIG_STR_TABLE str_table[] = { 591 VAR_TRANSPORT_MAPS, DEF_TRANSPORT_MAPS, &var_transport_maps, 0, 0, 592 VAR_LOCAL_TRANSPORT, DEF_LOCAL_TRANSPORT, &var_local_transport, 1, 0, 593 VAR_VIRT_TRANSPORT, DEF_VIRT_TRANSPORT, &var_virt_transport, 1, 0, 594 VAR_RELAY_TRANSPORT, DEF_RELAY_TRANSPORT, &var_relay_transport, 1, 0, 595 VAR_DEF_TRANSPORT, DEF_DEF_TRANSPORT, &var_def_transport, 1, 0, 596 VAR_VIRT_ALIAS_MAPS, DEF_VIRT_ALIAS_MAPS, &var_virt_alias_maps, 0, 0, 597 VAR_VIRT_ALIAS_DOMS, DEF_VIRT_ALIAS_DOMS, &var_virt_alias_doms, 0, 0, 598 VAR_VIRT_MAILBOX_MAPS, DEF_VIRT_MAILBOX_MAPS, &var_virt_mailbox_maps, 0, 0, 599 VAR_VIRT_MAILBOX_DOMS, DEF_VIRT_MAILBOX_DOMS, &var_virt_mailbox_doms, 0, 0, 600 VAR_RELOCATED_MAPS, DEF_RELOCATED_MAPS, &var_relocated_maps, 0, 0, 601 VAR_EMPTY_ADDR, DEF_EMPTY_ADDR, &var_empty_addr, 1, 0, 602 VAR_VRFY_XPORT_MAPS, DEF_VRFY_XPORT_MAPS, &var_vrfy_xport_maps, 0, 0, 603 VAR_VRFY_LOCAL_XPORT, DEF_VRFY_LOCAL_XPORT, &var_vrfy_local_xport, 1, 0, 604 VAR_VRFY_VIRT_XPORT, DEF_VRFY_VIRT_XPORT, &var_vrfy_virt_xport, 1, 0, 605 VAR_VRFY_RELAY_XPORT, DEF_VRFY_RELAY_XPORT, &var_vrfy_relay_xport, 1, 0, 606 VAR_VRFY_DEF_XPORT, DEF_VRFY_DEF_XPORT, &var_vrfy_def_xport, 1, 0, 607 VAR_VRFY_RELAYHOST, DEF_VRFY_RELAYHOST, &var_vrfy_relayhost, 0, 0, 608 VAR_REM_RWR_DOMAIN, DEF_REM_RWR_DOMAIN, &var_remote_rwr_domain, 0, 0, 609 VAR_SND_RELAY_MAPS, DEF_SND_RELAY_MAPS, &var_snd_relay_maps, 0, 0, 610 VAR_NULL_RELAY_MAPS_KEY, DEF_NULL_RELAY_MAPS_KEY, &var_null_relay_maps_key, 1, 0, 611 VAR_VRFY_RELAY_MAPS, DEF_VRFY_RELAY_MAPS, &var_vrfy_relay_maps, 0, 0, 612 VAR_SND_DEF_XPORT_MAPS, DEF_SND_DEF_XPORT_MAPS, &var_snd_def_xport_maps, 0, 0, 613 VAR_NULL_DEF_XPORT_MAPS_KEY, DEF_NULL_DEF_XPORT_MAPS_KEY, &var_null_def_xport_maps_key, 1, 0, 614 VAR_VRFY_SND_DEF_XPORT_MAPS, DEF_VRFY_SND_DEF_XPORT_MAPS, &var_vrfy_snd_def_xport_maps, 0, 0, 615 0, 616 }; 617 static const CONFIG_BOOL_TABLE bool_table[] = { 618 VAR_SWAP_BANGPATH, DEF_SWAP_BANGPATH, &var_swap_bangpath, 619 VAR_APP_AT_MYORIGIN, DEF_APP_AT_MYORIGIN, &var_append_at_myorigin, 620 VAR_PERCENT_HACK, DEF_PERCENT_HACK, &var_percent_hack, 621 VAR_RESOLVE_DEQUOTED, DEF_RESOLVE_DEQUOTED, &var_resolve_dequoted, 622 VAR_SHOW_UNK_RCPT_TABLE, DEF_SHOW_UNK_RCPT_TABLE, &var_show_unk_rcpt_table, 623 VAR_RESOLVE_NULLDOM, DEF_RESOLVE_NULLDOM, &var_resolve_nulldom, 624 VAR_RESOLVE_NUM_DOM, DEF_RESOLVE_NUM_DOM, &var_resolve_num_dom, 625 VAR_ALLOW_MIN_USER, DEF_ALLOW_MIN_USER, &var_allow_min_user, 626 0, 627 }; 628 static const CONFIG_NBOOL_TABLE nbool_table[] = { 629 VAR_APP_DOT_MYDOMAIN, DEF_APP_DOT_MYDOMAIN, &var_append_dot_mydomain, 630 0, 631 }; 632 633 /* 634 * Fingerprint executables and core dumps. 635 */ 636 MAIL_VERSION_STAMP_ALLOCATE; 637 638 multi_server_main(argc, argv, rewrite_service, 639 CA_MAIL_SERVER_STR_TABLE(str_table), 640 CA_MAIL_SERVER_BOOL_TABLE(bool_table), 641 CA_MAIL_SERVER_NBOOL_TABLE(nbool_table), 642 CA_MAIL_SERVER_PRE_INIT(pre_jail_init), 643 CA_MAIL_SERVER_POST_INIT(post_jail_init), 644 #ifdef CHECK_TABLE_STATS_BEFORE_ACCEPT 645 CA_MAIL_SERVER_PRE_ACCEPT(pre_accept), 646 #endif 647 0); 648 } 649