masqmail

annotate src/masqmail.c @ 279:1aa107c6b1e5

find changesets by author, revision, files, or words in the commit message
moved some code around
author markus schnalke <meillo@marmaro.de>
date Mon, 06 Dec 2010 17:46:24 -0300
parents 1abc1faeb45d
children ea5f86e0a81c
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@76 3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
meillo@0 4
meillo@0 5 This program is free software; you can redistribute it and/or modify
meillo@0 6 it under the terms of the GNU General Public License as published by
meillo@0 7 the Free Software Foundation; either version 2 of the License, or
meillo@0 8 (at your option) any later version.
meillo@0 9
meillo@0 10 This program is distributed in the hope that it will be useful,
meillo@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 13 GNU General Public License for more details.
meillo@0 14
meillo@0 15 You should have received a copy of the GNU General Public License
meillo@0 16 along with this program; if not, write to the Free Software
meillo@0 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 18 */
meillo@0 19
meillo@0 20 #include <stdio.h>
meillo@0 21 #include <errno.h>
meillo@0 22 #include <stdlib.h>
meillo@0 23 #include <string.h>
meillo@0 24 #include <unistd.h>
meillo@0 25 #include <sys/types.h>
meillo@0 26 #include <sys/socket.h>
meillo@0 27 #include <sys/time.h>
meillo@0 28 #include <netinet/in.h>
meillo@0 29 #include <netdb.h>
meillo@0 30 #include <syslog.h>
meillo@0 31 #include <signal.h>
meillo@0 32
meillo@0 33 #include <glib.h>
meillo@0 34
meillo@0 35 #include "masqmail.h"
meillo@0 36
meillo@192 37 /* mutually exclusive modes. Note that there is no 'queue daemon' mode.
meillo@192 38 It, as well as the distinction beween the two (non exclusive) daemon
meillo@192 39 (queue and listen) modes, is handled by flags.*/
meillo@10 40 typedef enum _mta_mode {
meillo@278 41 MODE_ACCEPT = 0, /* accept message on stdin (fallback mode) */
meillo@10 42 MODE_DAEMON, /* run as daemon */
meillo@10 43 MODE_RUNQUEUE, /* single queue run, online or offline */
meillo@10 44 MODE_SMTP, /* accept SMTP on stdin */
meillo@10 45 MODE_LIST, /* list queue */
meillo@10 46 MODE_MCMD, /* do queue manipulation */
meillo@10 47 MODE_VERSION, /* show version */
meillo@10 48 MODE_BI, /* fake ;-) */
meillo@10 49 } mta_mode;
meillo@0 50
meillo@0 51 char *pidfile = NULL;
meillo@0 52 volatile int sigterm_in_progress = 0;
meillo@0 53
meillo@10 54 static void
meillo@10 55 sigterm_handler(int sig)
meillo@0 56 {
meillo@10 57 if (sigterm_in_progress)
meillo@10 58 raise(sig);
meillo@10 59 sigterm_in_progress = 1;
meillo@0 60
meillo@10 61 if (pidfile) {
meillo@10 62 uid_t uid;
meillo@10 63 uid = seteuid(0);
meillo@10 64 if (unlink(pidfile) != 0)
meillo@10 65 logwrite(LOG_WARNING, "could not delete pid file %s: %s\n", pidfile, strerror(errno));
meillo@10 66 seteuid(uid); /* we exit anyway after this, just to be sure */
meillo@10 67 }
meillo@0 68
meillo@10 69 signal(sig, SIG_DFL);
meillo@10 70 raise(sig);
meillo@0 71 }
meillo@0 72
meillo@10 73 #ifdef ENABLE_IDENT /* so far used for that only */
meillo@10 74 static gboolean
meillo@10 75 is_in_netlist(gchar * host, GList * netlist)
meillo@0 76 {
meillo@10 77 guint hostip = inet_addr(host);
meillo@10 78 struct in_addr addr;
meillo@0 79
meillo@10 80 addr.s_addr = hostip;
meillo@10 81 if (addr.s_addr != INADDR_NONE) {
meillo@10 82 GList *node;
meillo@10 83 foreach(netlist, node) {
meillo@10 84 struct in_addr *net = (struct in_addr *) (node->data);
meillo@10 85 if ((addr.s_addr & net->s_addr) == net->s_addr)
meillo@10 86 return TRUE;
meillo@10 87 }
meillo@10 88 }
meillo@10 89 return FALSE;
meillo@0 90 }
meillo@0 91 #endif
meillo@0 92
meillo@249 93 /*
meillo@249 94 argv: the original argv
meillo@249 95 argp: number of arg (may get modified!)
meillo@249 96 cp: pointing to the char after the option
meillo@249 97 e.g. `-d 6' `-d6'
meillo@249 98 ^ ^
meillo@249 99 */
meillo@10 100 gchar*
meillo@249 101 get_optarg(char* argv[], gint* argp, char* cp)
meillo@0 102 {
meillo@249 103 if (*cp) {
meillo@249 104 /* this kind: -xval */
meillo@249 105 return cp;
meillo@249 106 }
meillo@249 107 cp = argv[*argp+1];
meillo@249 108 if (cp && (*cp != '-')) {
meillo@249 109 /* this kind: -x val */
meillo@249 110 (*argp)++;
meillo@249 111 return cp;
meillo@10 112 }
meillo@10 113 return NULL;
meillo@0 114 }
meillo@0 115
meillo@10 116 gboolean
meillo@10 117 write_pidfile(gchar * name)
meillo@0 118 {
meillo@10 119 FILE *fptr;
meillo@0 120
meillo@10 121 if ((fptr = fopen(name, "wt"))) {
meillo@10 122 fprintf(fptr, "%d\n", getpid());
meillo@10 123 fclose(fptr);
meillo@10 124 pidfile = strdup(name);
meillo@10 125 return TRUE;
meillo@10 126 }
meillo@10 127 logwrite(LOG_WARNING, "could not write pid file: %s\n", strerror(errno));
meillo@10 128 return FALSE;
meillo@10 129 }
meillo@0 130
meillo@264 131 /* on -bd or if -q has an argument */
meillo@10 132 static void
meillo@10 133 mode_daemon(gboolean do_listen, gint queue_interval, char *argv[])
meillo@10 134 {
meillo@10 135 guint pid;
meillo@0 136
meillo@10 137 /* daemon */
meillo@10 138 if (!conf.run_as_user) {
meillo@10 139 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
meillo@10 140 fprintf(stderr, "must be root or %s for daemon.\n", DEF_MAIL_USER);
meillo@262 141 exit(1);
meillo@10 142 }
meillo@10 143 }
meillo@0 144
meillo@74 145 /* reparent to init only if init is not already the parent */
meillo@74 146 if (getppid() != 1) {
meillo@74 147 if ((pid = fork()) > 0) {
meillo@262 148 exit(0);
meillo@74 149 } else if (pid < 0) {
meillo@208 150 logwrite(LOG_ALERT, "could not fork!\n");
meillo@262 151 exit(1);
meillo@74 152 }
meillo@10 153 }
meillo@0 154
meillo@10 155 signal(SIGTERM, sigterm_handler);
meillo@10 156 write_pidfile(PIDFILEDIR "/masqmail.pid");
meillo@0 157
meillo@10 158 conf.do_verbose = FALSE;
meillo@10 159
meillo@72 160 /* closing and reopening the log ensures that it is open afterwards
meillo@72 161 because it is possible that the log is assigned to fd 1 and gets
meillo@72 162 thus closes by fclose(stdout). Similar for the debugfile.
meillo@72 163 */
meillo@72 164 logclose();
meillo@10 165 fclose(stdin);
meillo@10 166 fclose(stdout);
meillo@10 167 fclose(stderr);
meillo@72 168 logopen();
meillo@10 169
meillo@208 170 logwrite(LOG_NOTICE, "%s %s daemon starting\n", PACKAGE, VERSION);
meillo@10 171 listen_port(do_listen ? conf.listen_addresses : NULL, queue_interval, argv);
meillo@0 172 }
meillo@0 173
meillo@264 174 /* -bs or called as smtpd or in.smtpd */
meillo@10 175 static void
meillo@10 176 mode_smtp()
meillo@0 177 {
meillo@10 178 /* accept smtp message on stdin */
meillo@10 179 /* write responses to stderr. */
meillo@0 180
meillo@10 181 struct sockaddr_in saddr;
meillo@10 182 gchar *peername = NULL;
meillo@10 183 int dummy = sizeof(saddr);
meillo@0 184
meillo@10 185 conf.do_verbose = FALSE;
meillo@0 186
meillo@10 187 if (!conf.run_as_user) {
meillo@10 188 seteuid(conf.orig_uid);
meillo@10 189 setegid(conf.orig_gid);
meillo@10 190 }
meillo@0 191
meillo@10 192 DEBUG(5) debugf("accepting smtp message on stdin\n");
meillo@0 193
meillo@10 194 if (getpeername(0, (struct sockaddr *) (&saddr), &dummy) == 0) {
meillo@10 195 peername = g_strdup(inet_ntoa(saddr.sin_addr));
meillo@10 196 } else if (errno != ENOTSOCK)
meillo@262 197 exit(1);
meillo@0 198
meillo@10 199 smtp_in(stdin, stderr, peername, NULL);
meillo@0 200 }
meillo@0 201
meillo@264 202 /* default mode if address args or -t is specified, or called as rmail */
meillo@10 203 static void
meillo@10 204 mode_accept(address * return_path, gchar * full_sender_name, guint accept_flags, char **addresses, int addr_cnt)
meillo@0 205 {
meillo@10 206 /* accept message on stdin */
meillo@10 207 accept_error err;
meillo@10 208 message *msg = create_message();
meillo@10 209 gint i;
meillo@266 210 pid_t pid;
meillo@0 211
meillo@83 212 if (return_path && !is_privileged_user(conf.orig_uid)) {
meillo@96 213 fprintf(stderr, "must be root, %s or in group %s for setting return path.\n", DEF_MAIL_USER, DEF_MAIL_GROUP);
meillo@262 214 exit(1);
meillo@10 215 }
meillo@0 216
meillo@10 217 if (!conf.run_as_user) {
meillo@10 218 seteuid(conf.orig_uid);
meillo@10 219 setegid(conf.orig_gid);
meillo@10 220 }
meillo@0 221
meillo@10 222 DEBUG(5) debugf("accepting message on stdin\n");
meillo@0 223
meillo@10 224 msg->received_prot = PROT_LOCAL;
meillo@276 225
meillo@276 226 /* warn if -t option and cmdline addr args */
meillo@276 227 if (addr_cnt && (accept_flags & ACC_RCPT_FROM_HEAD)) {
meillo@276 228 logwrite(LOG_ALERT, "command line address arguments are now *added* to the mail header\\\n");
meillo@276 229 logwrite(LOG_ALERT, " recipient addresses (instead of substracted) when -t is given.\\\n");
meillo@276 230 logwrite(LOG_ALERT, " this changed with version 0.3.1\n");
meillo@276 231 }
meillo@276 232
meillo@10 233 for (i = 0; i < addr_cnt; i++) {
meillo@266 234 if (addresses[i][0] == '|') {
meillo@10 235 logwrite(LOG_ALERT, "no pipe allowed as recipient address: %s\n", addresses[i]);
meillo@276 236 /* should we better ignore this one addr? */
meillo@262 237 exit(1);
meillo@10 238 }
meillo@264 239 msg->rcpt_list = g_list_append(msg->rcpt_list, create_address_qualified(addresses[i], TRUE, conf.host_name));
meillo@10 240 }
meillo@0 241
meillo@10 242 /* -f option */
meillo@10 243 msg->return_path = return_path;
meillo@0 244
meillo@10 245 /* -F option */
meillo@10 246 msg->full_sender_name = full_sender_name;
meillo@0 247
meillo@266 248 err = accept_message(stdin, msg, accept_flags);
meillo@0 249
meillo@266 250 switch (err) {
meillo@266 251 case AERR_OK:
meillo@266 252 /* to continue; all other cases exit */
meillo@266 253 break;
meillo@266 254 case AERR_EOF:
meillo@266 255 fprintf(stderr, "unexpected EOF.\n");
meillo@266 256 exit(1);
meillo@266 257 case AERR_NORCPT:
meillo@266 258 fprintf(stderr, "no recipients.\n");
meillo@266 259 exit(1);
meillo@266 260 case AERR_SIZE:
meillo@266 261 fprintf(stderr, "max message size exceeded.\n");
meillo@266 262 exit(1);
meillo@266 263 default:
meillo@266 264 /* should never happen: */
meillo@266 265 fprintf(stderr, "Unknown error (%d)\r\n", err);
meillo@266 266 exit(1);
meillo@266 267 }
meillo@266 268
meillo@266 269 if (!spool_write(msg, TRUE)) {
meillo@266 270 fprintf(stderr, "Could not write spool file\n");
meillo@266 271 exit(1);
meillo@266 272 }
meillo@266 273
meillo@267 274 /* here the mail is queued and thus in our responsibility */
meillo@266 275 logwrite(LOG_NOTICE, "%s <= %s with %s\n", msg->uid, addr_string(msg->return_path), prot_names[PROT_LOCAL]);
meillo@266 276
meillo@266 277 if (conf.do_queue) {
meillo@266 278 /* we're finished as we only need to queue it */
meillo@266 279 return;
meillo@266 280 }
meillo@266 281
meillo@266 282 /* deliver at once */
meillo@266 283 if ((pid = fork()) < 0) {
meillo@266 284 logwrite(LOG_ALERT, "could not fork for delivery, id = %s\n", msg->uid);
meillo@266 285 } else if (pid == 0) {
meillo@266 286 conf.do_verbose = FALSE;
meillo@266 287 fclose(stdin);
meillo@266 288 fclose(stdout);
meillo@266 289 fclose(stderr);
meillo@266 290 if (deliver(msg)) {
meillo@266 291 exit(0);
meillo@10 292 } else {
meillo@267 293 /*
meillo@267 294 TODO:
meillo@267 295 Should we really fail here? Because the mail is queued
meillo@267 296 already. If we fail the client might submit it again.
meillo@267 297 If at-once-delivery is seen as an additional best-effort
meillo@267 298 service, then we should still exit successful here.
meillo@267 299 */
meillo@262 300 exit(1);
meillo@10 301 }
meillo@0 302 }
meillo@0 303 }
meillo@0 304
meillo@250 305 /*
meillo@264 306 if -Mrm is given
meillo@264 307
meillo@250 308 currently only the `rm' command is supported
meillo@250 309 until this changes, we don't need any facility for further commands
meillo@250 310 return success if at least one message had been deleted
meillo@250 311 */
meillo@250 312 static int
meillo@250 313 manipulate_queue(char* cmd, char* id[])
meillo@250 314 {
meillo@250 315 gboolean ok = FALSE;
meillo@250 316
meillo@250 317 if (strcmp(cmd, "rm") != 0) {
meillo@250 318 fprintf(stderr, "unknown command %s\n", cmd);
meillo@250 319 return FALSE;
meillo@250 320 }
meillo@250 321
meillo@250 322 set_euidgid(conf.mail_uid, conf.mail_gid, NULL, NULL);
meillo@250 323
meillo@250 324 /* privileged users may delete any mail */
meillo@250 325 if (is_privileged_user(conf.orig_uid)) {
meillo@250 326 for (; *id; id++) {
meillo@250 327 fprintf(stderr, "id: %s\n", *id);
meillo@250 328 if (queue_delete(*id)) {
meillo@250 329 ok = TRUE;
meillo@250 330 }
meillo@250 331 }
meillo@250 332 return ok;
meillo@250 333 }
meillo@250 334
meillo@250 335 struct passwd *pw = getpwuid(conf.orig_uid);
meillo@250 336 if (!pw) {
meillo@250 337 fprintf(stderr, "could not find a passwd entry for uid %d: %s\n",
meillo@250 338 conf.orig_uid, strerror(errno));
meillo@250 339 return FALSE;
meillo@250 340 }
meillo@250 341
meillo@250 342 /* non-privileged users may only delete their own messages */
meillo@250 343 for (; *id; id++) {
meillo@250 344 message *msg = msg_spool_read(*id, FALSE);
meillo@250 345
meillo@250 346 fprintf(stderr, "id: %s\n", *id);
meillo@250 347
meillo@250 348 if (!msg->ident) {
meillo@250 349 fprintf(stderr, "message %s does not have an ident\n", *id);
meillo@250 350 continue;
meillo@250 351 }
meillo@250 352 if (strcmp(pw->pw_name, msg->ident) != 0) {
meillo@250 353 fprintf(stderr, "you do not own message id %s\n", *id);
meillo@250 354 continue;
meillo@250 355 }
meillo@250 356
meillo@250 357 if ( (msg->received_host || (msg->received_prot != PROT_LOCAL))
meillo@250 358 #ifdef ENABLE_IDENT
meillo@250 359 && !is_in_netlist(msg->received_host, conf.ident_trusted_nets)
meillo@250 360 #endif
meillo@250 361 ) {
meillo@250 362 fprintf(stderr, "message %s was not received locally or from a trusted network\n", *id);
meillo@250 363 continue;
meillo@250 364 }
meillo@250 365
meillo@250 366 ok = queue_delete(*id);
meillo@250 367 }
meillo@250 368 return ok;
meillo@250 369 }
meillo@250 370
meillo@264 371 /* -qo, -q (without argument), or called as runq */
meillo@264 372 /* TODO: are -qo and -q exclusively or not?
meillo@264 373 And how is this related to being a daemon? */
meillo@251 374 static int
meillo@251 375 run_queue(gboolean do_runq, gboolean do_runq_online, char* route_name)
meillo@251 376 {
meillo@251 377 int ret;
meillo@251 378
meillo@251 379 /* queue runs */
meillo@251 380 set_identity(conf.orig_uid, "queue run");
meillo@251 381
meillo@251 382 if (do_runq) {
meillo@251 383 ret = queue_run();
meillo@251 384 }
meillo@251 385
meillo@251 386 if (do_runq_online) {
meillo@251 387 if (route_name) {
meillo@251 388 conf.online_detect = g_strdup("argument");
meillo@251 389 set_online_name(route_name);
meillo@251 390 }
meillo@251 391 ret = queue_run_online();
meillo@251 392 }
meillo@251 393 return ret;
meillo@251 394 }
meillo@251 395
meillo@264 396 /* -bV or default mode if neither addr arg nor -t */
meillo@261 397 static void
meillo@261 398 mode_version(void)
meillo@261 399 {
meillo@261 400 gchar *with_resolver = "";
meillo@261 401 gchar *with_auth = "";
meillo@261 402 gchar *with_ident = "";
meillo@261 403
meillo@261 404 #ifdef ENABLE_RESOLVER
meillo@261 405 with_resolver = " +resolver";
meillo@261 406 #endif
meillo@261 407 #ifdef ENABLE_AUTH
meillo@261 408 with_auth = " +auth";
meillo@261 409 #endif
meillo@261 410 #ifdef ENABLE_IDENT
meillo@261 411 with_ident = " +ident";
meillo@261 412 #endif
meillo@261 413
meillo@261 414 printf("%s %s%s%s%s\n", PACKAGE, VERSION, with_resolver, with_auth, with_ident);
meillo@261 415 }
meillo@261 416
meillo@0 417 int
meillo@0 418 main(int argc, char *argv[])
meillo@0 419 {
meillo@251 420 gchar *progname;
meillo@249 421 char* opt;
meillo@249 422 gint arg;
meillo@0 423
meillo@278 424 mta_mode mta_mode = MODE_ACCEPT;
meillo@10 425 gboolean do_listen = FALSE;
meillo@10 426 gboolean do_runq = FALSE;
meillo@10 427 gboolean do_runq_online = FALSE;
meillo@10 428 gboolean do_queue = FALSE;
meillo@10 429 gint queue_interval = 0;
meillo@251 430 gchar *M_cmd = NULL;
meillo@10 431 gboolean opt_t = FALSE;
meillo@10 432 gboolean opt_i = FALSE;
meillo@251 433 gchar *conf_file = CONF_FILE;
meillo@10 434 gchar *route_name = NULL;
meillo@10 435 gchar *f_address = NULL;
meillo@251 436 address *return_path = NULL; /* may be changed by -f option */
meillo@10 437 gchar *full_sender_name = NULL;
meillo@251 438 gboolean do_verbose = FALSE;
meillo@251 439 gint debug_level = -1;
meillo@0 440
meillo@260 441 /* strip the path part */
meillo@261 442 progname = strrchr(argv[0], '/');
meillo@261 443 progname = (progname) ? progname+1 : argv[0];
meillo@0 444
meillo@10 445 if (strcmp(progname, "mailq") == 0) {
meillo@10 446 mta_mode = MODE_LIST;
meillo@10 447 } else if (strcmp(progname, "mailrm") == 0) {
meillo@10 448 mta_mode = MODE_MCMD;
meillo@10 449 M_cmd = "rm";
meillo@10 450 } else if (strcmp(progname, "runq") == 0) {
meillo@10 451 mta_mode = MODE_RUNQUEUE;
meillo@10 452 do_runq = TRUE;
meillo@10 453 } else if (strcmp(progname, "rmail") == 0) {
meillo@89 454 /* the `rmail' alias should probably be removed now
meillo@89 455 that we have the rmail script. But let's keep it
meillo@89 456 for some while for compatibility. 2010-06-19 */
meillo@10 457 mta_mode = MODE_ACCEPT;
meillo@10 458 opt_i = TRUE;
meillo@10 459 } else if (strcmp(progname, "smtpd") == 0 || strcmp(progname, "in.smtpd") == 0) {
meillo@10 460 mta_mode = MODE_SMTP;
meillo@10 461 }
meillo@0 462
meillo@10 463 /* parse cmd line */
meillo@249 464 for (arg=1; arg<argc && argv[arg][0]=='-'; arg++) {
meillo@251 465 opt = argv[arg] + 1; /* points to the char after the dash */
meillo@10 466
meillo@249 467 if (strcmp(opt, "-") == 0) {
meillo@249 468 /* everything after `--' are address arguments */
meillo@249 469 arg++;
meillo@249 470 break;
meillo@10 471
meillo@278 472 } else if (strcmp(opt, "bm") == 0) {
meillo@278 473 mta_mode = MODE_ACCEPT;
meillo@278 474
meillo@249 475 } else if (strcmp(opt, "bd") == 0) {
meillo@249 476 do_listen = TRUE;
meillo@249 477 mta_mode = MODE_DAEMON;
meillo@249 478
meillo@249 479 } else if (strcmp(opt, "bi") == 0) {
meillo@249 480 /* ignored */
meillo@249 481 mta_mode = MODE_BI;
meillo@249 482
meillo@249 483 } else if (strcmp(opt, "bs") == 0) {
meillo@249 484 mta_mode = MODE_SMTP;
meillo@249 485
meillo@249 486 } else if (strcmp(opt, "bp") == 0) {
meillo@249 487 mta_mode = MODE_LIST;
meillo@249 488
meillo@249 489 } else if (strcmp(opt, "bV") == 0) {
meillo@249 490 mta_mode = MODE_VERSION;
meillo@249 491
meillo@249 492 } else if (strncmp(opt, "B", 1) == 0) {
meillo@249 493 /* we ignore this and throw the argument away */
meillo@249 494 get_optarg(argv, &arg, opt+1);
meillo@249 495
meillo@249 496 } else if (strncmp(opt, "C", 1) == 0) {
meillo@251 497 conf_file = get_optarg(argv, &arg, opt+1);
meillo@251 498 if (!conf_file) {
meillo@249 499 fprintf(stderr, "-C requires a filename as argument.\n");
meillo@262 500 exit(1);
meillo@10 501 }
meillo@249 502
meillo@249 503 } else if (strncmp(opt, "d", 1) == 0) {
meillo@249 504 if (getuid() != 0) {
meillo@249 505 fprintf(stderr, "only root may set the debug level.\n");
meillo@262 506 exit(1);
meillo@249 507 }
meillo@249 508 char *lvl = get_optarg(argv, &arg, opt+1);
meillo@249 509 if (!lvl) {
meillo@249 510 fprintf(stderr, "-d requires a number argument.\n");
meillo@262 511 exit(1);
meillo@249 512 }
meillo@249 513 debug_level = atoi(lvl);
meillo@249 514
meillo@249 515 } else if (strncmp(opt, "f", 1) == 0) {
meillo@249 516 /* set return path */
meillo@249 517 gchar *address = get_optarg(argv, &arg, opt+1);
meillo@249 518 if (!address) {
meillo@249 519 fprintf(stderr, "-f requires an address argument\n");
meillo@262 520 exit(1);
meillo@249 521 }
meillo@249 522 f_address = g_strdup(address);
meillo@249 523
meillo@249 524 } else if (strncmp(opt, "F", 1) == 0) {
meillo@249 525 full_sender_name = get_optarg(argv, &arg, opt+1);
meillo@249 526 if (!full_sender_name) {
meillo@249 527 fprintf(stderr, "-F requires a name argument\n");
meillo@262 528 exit(1);
meillo@249 529 }
meillo@249 530
meillo@249 531 } else if (strcmp(opt, "i") == 0) {
meillo@249 532 opt_i = TRUE;
meillo@249 533
meillo@249 534 } else if (strcmp(opt, "m") == 0) {
meillo@249 535 /* ignore -m (me too) switch (see man page) */
meillo@249 536
meillo@249 537 } else if (strcmp(opt, "Mrm") == 0) {
meillo@249 538 mta_mode = MODE_MCMD;
meillo@249 539 M_cmd = "rm";
meillo@249 540
meillo@249 541 } else if (strcmp(opt, "odq") == 0) {
meillo@249 542 do_queue = TRUE;
meillo@249 543
meillo@249 544 } else if (strcmp(opt, "oi") == 0) {
meillo@257 545 opt_i = TRUE;
meillo@249 546
meillo@249 547 } else if (strncmp(opt, "o", 1) == 0) {
meillo@249 548 /* ignore all other -oXXX options */
meillo@249 549
meillo@249 550 } else if (strncmp(opt, "qo", 2) == 0) {
meillo@278 551 /* must be before the `q' check */
meillo@249 552 mta_mode = MODE_RUNQUEUE;
meillo@249 553 do_runq = FALSE;
meillo@249 554 do_runq_online = TRUE;
meillo@249 555 /* can be NULL, then we use online detection method */
meillo@249 556 route_name = get_optarg(argv, &arg, opt+2);
meillo@249 557
meillo@249 558 } else if (strncmp(opt, "q", 1) == 0) {
meillo@249 559 /* must be after the `qo' check */
meillo@249 560 gchar *optarg;
meillo@249 561
meillo@249 562 do_runq = TRUE;
meillo@249 563 mta_mode = MODE_RUNQUEUE;
meillo@251 564 optarg = get_optarg(argv, &arg, opt+1);
meillo@251 565 if (optarg) {
meillo@251 566 /* not just one single queue run but regular runs */
meillo@249 567 mta_mode = MODE_DAEMON;
meillo@254 568 queue_interval = time_interval(optarg);
meillo@249 569 }
meillo@249 570
meillo@249 571 } else if (strcmp(opt, "t") == 0) {
meillo@249 572 opt_t = TRUE;
meillo@249 573
meillo@249 574 } else if (strcmp(opt, "v") == 0) {
meillo@249 575 do_verbose = TRUE;
meillo@249 576
meillo@10 577 } else {
meillo@249 578 fprintf(stderr, "unrecognized option `-%s'\n", opt);
meillo@262 579 exit(1);
meillo@10 580 }
meillo@0 581 }
meillo@0 582
meillo@278 583 if (mta_mode==MODE_ACCEPT && arg==argc && !opt_t) {
meillo@278 584 /*
meillo@278 585 In this case no rcpts can be found, thus no mail
meillo@278 586 can be sent, thus masqmail will always fail. We
meillo@278 587 rather do something better instead. This covers
meillo@278 588 also the case of calling masqmail without args.
meillo@278 589 */
meillo@278 590 mta_mode = MODE_VERSION;
meillo@259 591 }
meillo@259 592
meillo@10 593 if (mta_mode == MODE_VERSION) {
meillo@261 594 mode_version();
meillo@262 595 exit(0);
meillo@10 596 }
meillo@0 597
meillo@10 598 /* initialize random generator */
meillo@10 599 srand(time(NULL));
meillo@10 600 /* ignore SIGPIPE signal */
meillo@10 601 signal(SIGPIPE, SIG_IGN);
meillo@0 602
meillo@73 603 /* close all possibly open file descriptors, except std{in,out,err} */
meillo@10 604 {
meillo@10 605 int i, max_fd = sysconf(_SC_OPEN_MAX);
meillo@0 606
meillo@251 607 if (max_fd <= 0) {
meillo@10 608 max_fd = 64;
meillo@251 609 }
meillo@251 610 for (i=3; i<max_fd; i++) {
meillo@10 611 close(i);
meillo@251 612 }
meillo@10 613 }
meillo@0 614
meillo@10 615 init_conf();
meillo@0 616
meillo@10 617 /* if we are not privileged, and the config file was changed we
meillo@10 618 implicetely set the the run_as_user flag and give up all
meillo@10 619 privileges.
meillo@0 620
meillo@10 621 So it is possible for a user to run his own daemon without
meillo@10 622 breaking security.
meillo@10 623 */
meillo@251 624 if ((strcmp(conf_file, CONF_FILE) != 0) && (conf.orig_uid != 0)) {
meillo@251 625 conf.run_as_user = TRUE;
meillo@251 626 seteuid(conf.orig_uid);
meillo@251 627 setegid(conf.orig_gid);
meillo@251 628 setuid(conf.orig_uid);
meillo@251 629 setgid(conf.orig_gid);
meillo@10 630 }
meillo@0 631
meillo@155 632 conf.log_dir = LOG_DIR;
meillo@155 633 logopen();
meillo@155 634 if (!read_conf(conf_file)) {
meillo@155 635 logwrite(LOG_ALERT, "SHUTTING DOWN due to problems reading config\n");
meillo@155 636 exit(5);
meillo@155 637 }
meillo@155 638 logclose();
meillo@0 639
meillo@251 640 if (do_queue) {
meillo@10 641 conf.do_queue = TRUE;
meillo@251 642 }
meillo@251 643 if (do_verbose) {
meillo@10 644 conf.do_verbose = TRUE;
meillo@251 645 }
meillo@251 646 if (debug_level >= 0) { /* if >= 0, it was given by argument */
meillo@10 647 conf.debug_level = debug_level;
meillo@251 648 }
meillo@0 649
meillo@46 650 /* It appears that changing to / ensures that we are never in
meillo@46 651 a directory which we cannot access. This situation could be
meillo@46 652 possible after changing identity.
meillo@46 653 Maybe we should only change to / if we not run as user, to
meillo@46 654 allow relative paths for log files in test setups for
meillo@46 655 instance.
meillo@46 656 */
meillo@10 657 chdir("/");
meillo@0 658
meillo@10 659 if (!conf.run_as_user) {
meillo@10 660 if (setgid(0) != 0) {
meillo@10 661 fprintf(stderr, "could not set gid to 0. Is the setuid bit set? : %s\n", strerror(errno));
meillo@262 662 exit(1);
meillo@10 663 }
meillo@10 664 if (setuid(0) != 0) {
meillo@10 665 fprintf(stderr, "could not gain root privileges. Is the setuid bit set? : %s\n", strerror(errno));
meillo@262 666 exit(1);
meillo@10 667 }
meillo@10 668 }
meillo@0 669
meillo@10 670 if (!logopen()) {
meillo@10 671 fprintf(stderr, "could not open log file\n");
meillo@262 672 exit(1);
meillo@10 673 }
meillo@0 674
meillo@10 675 DEBUG(1) debugf("masqmail %s starting\n", VERSION);
meillo@0 676
meillo@10 677 DEBUG(5) {
meillo@10 678 gchar **str = argv;
meillo@10 679 debugf("args: \n");
meillo@10 680 while (*str) {
meillo@10 681 debugf("%s \n", *str);
meillo@10 682 str++;
meillo@10 683 }
meillo@10 684 }
meillo@10 685 DEBUG(5) debugf("queue_interval = %d\n", queue_interval);
meillo@0 686
meillo@10 687 if (f_address) {
meillo@10 688 return_path = create_address_qualified(f_address, TRUE, conf.host_name);
meillo@10 689 g_free(f_address);
meillo@10 690 if (!return_path) {
meillo@10 691 fprintf(stderr, "invalid RFC821 address: %s\n", f_address);
meillo@262 692 exit(1);
meillo@10 693 }
meillo@10 694 }
meillo@10 695
meillo@10 696 switch (mta_mode) {
meillo@10 697 case MODE_DAEMON:
meillo@10 698 mode_daemon(do_listen, queue_interval, argv);
meillo@10 699 break;
meillo@251 700
meillo@10 701 case MODE_RUNQUEUE:
meillo@251 702 exit(run_queue(do_runq, do_runq_online, route_name) ? 0 : 1);
meillo@10 703 break;
meillo@10 704
meillo@10 705 case MODE_SMTP:
meillo@10 706 mode_smtp();
meillo@10 707 break;
meillo@10 708
meillo@10 709 case MODE_LIST:
meillo@10 710 queue_list();
meillo@10 711 break;
meillo@10 712
meillo@10 713 case MODE_BI:
meillo@262 714 exit(0);
meillo@10 715 break; /* well... */
meillo@10 716
meillo@10 717 case MODE_MCMD:
meillo@250 718 exit(manipulate_queue(M_cmd, &argv[arg]) ? 0 : 1);
meillo@10 719 break;
meillo@10 720
meillo@10 721 case MODE_ACCEPT:
meillo@10 722 {
meillo@268 723 guint accept_flags = (opt_t ? ACC_RCPT_FROM_HEAD : 0)
meillo@110 724 | (opt_i ? ACC_DOT_IGNORE : ACC_NODOT_RELAX);
meillo@10 725 mode_accept(return_path, full_sender_name, accept_flags, &(argv[arg]), argc - arg);
meillo@258 726 exit(0);
meillo@10 727 }
meillo@10 728 break;
meillo@251 729
meillo@10 730 default:
meillo@10 731 fprintf(stderr, "unknown mode: %d\n", mta_mode);
meillo@10 732 break;
meillo@0 733 }
meillo@0 734
meillo@10 735 logclose();
meillo@0 736
meillo@263 737 exit(0);
meillo@0 738 }