masqmail

annotate src/masqmail.c @ 422:bdbedce60247

find changesets by author, revision, files, or words in the commit message
Remove `input' dir in spool dir. Spooled files are in spool dir directly now. There's no more need to have any sub directories in the spool dir at all.
author markus schnalke <meillo@marmaro.de>
date Wed, 30 May 2012 10:27:10 +0200
parents d209b4846f2b
children a19e47ebbb33
rev   line source
meillo@367 1 /*
meillo@367 2 ** MasqMail
meillo@367 3 ** Copyright (C) 1999-2001 Oliver Kurth
meillo@367 4 ** Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
meillo@367 5 **
meillo@367 6 ** This program is free software; you can redistribute it and/or modify
meillo@367 7 ** it under the terms of the GNU General Public License as published by
meillo@367 8 ** the Free Software Foundation; either version 2 of the License, or
meillo@367 9 ** (at your option) any later version.
meillo@367 10 **
meillo@367 11 ** This program is distributed in the hope that it will be useful,
meillo@367 12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@367 13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@367 14 ** GNU General Public License for more details.
meillo@367 15 **
meillo@367 16 ** You should have received a copy of the GNU General Public License
meillo@367 17 ** along with this program; if not, write to the Free Software
meillo@367 18 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 19 */
meillo@0 20
meillo@0 21 #include <stdio.h>
meillo@0 22 #include <errno.h>
meillo@0 23 #include <stdlib.h>
meillo@0 24 #include <string.h>
meillo@0 25 #include <unistd.h>
meillo@0 26 #include <sys/types.h>
meillo@0 27 #include <sys/socket.h>
meillo@0 28 #include <sys/time.h>
meillo@0 29 #include <netinet/in.h>
meillo@0 30 #include <netdb.h>
meillo@0 31 #include <syslog.h>
meillo@0 32 #include <signal.h>
meillo@0 33
meillo@0 34 #include <glib.h>
meillo@0 35
meillo@0 36 #include "masqmail.h"
meillo@0 37
meillo@367 38 /*
meillo@367 39 ** mutually exclusive modes. Note that there is no 'queue daemon' mode.
meillo@367 40 ** It, as well as the distinction beween the two (non exclusive) daemon
meillo@367 41 ** (queue and listen) modes, is handled by flags.
meillo@367 42 */
meillo@281 43 enum mta_mode {
meillo@281 44 MODE_NONE = 0, /* to check if a mode was set */
meillo@281 45 MODE_ACCEPT, /* accept message on stdin (fallback mode) */
meillo@10 46 MODE_DAEMON, /* run as daemon */
meillo@10 47 MODE_RUNQUEUE, /* single queue run, online or offline */
meillo@10 48 MODE_SMTP, /* accept SMTP on stdin */
meillo@10 49 MODE_LIST, /* list queue */
meillo@10 50 MODE_MCMD, /* do queue manipulation */
meillo@10 51 MODE_VERSION, /* show version */
meillo@10 52 MODE_BI, /* fake ;-) */
meillo@281 53 };
meillo@281 54 enum mta_mode mta_mode = MODE_NONE;
meillo@0 55
meillo@0 56 char *pidfile = NULL;
meillo@0 57 volatile int sigterm_in_progress = 0;
meillo@0 58
meillo@10 59 static void
meillo@10 60 sigterm_handler(int sig)
meillo@0 61 {
meillo@10 62 if (sigterm_in_progress)
meillo@10 63 raise(sig);
meillo@10 64 sigterm_in_progress = 1;
meillo@0 65
meillo@10 66 if (pidfile) {
meillo@331 67 uid_t uid = geteuid();
meillo@331 68 if (seteuid(0) != 0) {
meillo@409 69 logwrite(LOG_ALERT, "sigterm_handler: could not set "
meillo@409 70 "euid to %d: %s\n",
meillo@409 71 0, strerror(errno));
meillo@331 72 }
meillo@10 73 if (unlink(pidfile) != 0)
meillo@409 74 logwrite(LOG_WARNING,
meillo@409 75 "could not delete pid file %s: %s\n",
meillo@409 76 pidfile, strerror(errno));
meillo@10 77 seteuid(uid); /* we exit anyway after this, just to be sure */
meillo@10 78 }
meillo@0 79
meillo@10 80 signal(sig, SIG_DFL);
meillo@10 81 raise(sig);
meillo@0 82 }
meillo@0 83
meillo@249 84 /*
meillo@367 85 ** argv: the original argv
meillo@367 86 ** argp: number of arg (may get modified!)
meillo@367 87 ** cp: pointing to the char after the option
meillo@367 88 ** e.g. `-d 6' `-d6'
meillo@367 89 ** ^ ^
meillo@249 90 */
meillo@10 91 gchar*
meillo@366 92 get_optarg(char *argv[], gint *argp, char *cp)
meillo@0 93 {
meillo@249 94 if (*cp) {
meillo@249 95 /* this kind: -xval */
meillo@249 96 return cp;
meillo@249 97 }
meillo@249 98 cp = argv[*argp+1];
meillo@249 99 if (cp && (*cp != '-')) {
meillo@249 100 /* this kind: -x val */
meillo@249 101 (*argp)++;
meillo@249 102 return cp;
meillo@10 103 }
meillo@10 104 return NULL;
meillo@0 105 }
meillo@0 106
meillo@421 107 /*
meillo@421 108 ** Create any missing directory in pathname `dir'. (Like `mkdir -p'.)
meillo@421 109 ** The code is taken from nmh.
meillo@421 110 */
meillo@421 111 gboolean
meillo@421 112 makedir_rec(char *dir, int perms)
meillo@421 113 {
meillo@421 114 char path[PATH_MAX];
meillo@421 115 char *cp, *c;
meillo@421 116 int had_an_error = 0;
meillo@421 117
meillo@421 118 c = strncpy(path, dir, sizeof(path));
meillo@421 119
meillo@421 120 while (!had_an_error && (c = strchr(c+1, '/'))) {
meillo@421 121 *c = '\0';
meillo@421 122 /* Create an outer directory. */
meillo@421 123 if (mkdir(path, perms) == -1 && errno != EEXIST) {
meillo@421 124 fprintf(stderr, "unable to create `%s': %s\n",
meillo@421 125 path, strerror(errno));
meillo@421 126 had_an_error = 1;
meillo@421 127 }
meillo@421 128 *c = '/';
meillo@421 129 }
meillo@421 130
meillo@421 131 /*
meillo@421 132 ** Create the innermost nested subdirectory of the
meillo@421 133 ** path we're being asked to create.
meillo@421 134 */
meillo@421 135 if (!had_an_error && mkdir(dir, perms)==-1 && errno != EEXIST) {
meillo@421 136 fprintf(stderr, "unable to create `%s': %s\n",
meillo@421 137 dir, strerror(errno));
meillo@421 138 had_an_error = 1;
meillo@421 139 }
meillo@421 140
meillo@421 141 return (had_an_error) ? 0 : 1;
meillo@421 142 }
meillo@421 143
meillo@10 144 gboolean
meillo@366 145 write_pidfile(gchar *name)
meillo@0 146 {
meillo@10 147 FILE *fptr;
meillo@0 148
meillo@10 149 if ((fptr = fopen(name, "wt"))) {
meillo@10 150 fprintf(fptr, "%d\n", getpid());
meillo@10 151 fclose(fptr);
meillo@10 152 pidfile = strdup(name);
meillo@10 153 return TRUE;
meillo@10 154 }
meillo@409 155 logwrite(LOG_WARNING, "could not write pid file: %s\n",
meillo@409 156 strerror(errno));
meillo@10 157 return FALSE;
meillo@10 158 }
meillo@0 159
meillo@264 160 /* on -bd or if -q has an argument */
meillo@10 161 static void
meillo@10 162 mode_daemon(gboolean do_listen, gint queue_interval, char *argv[])
meillo@10 163 {
meillo@10 164 guint pid;
meillo@0 165
meillo@10 166 /* daemon */
meillo@10 167 if (!conf.run_as_user) {
meillo@10 168 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
meillo@409 169 fprintf(stderr, "must be root or %s for daemon.\n",
meillo@409 170 DEF_MAIL_USER);
meillo@262 171 exit(1);
meillo@10 172 }
meillo@10 173 }
meillo@0 174
meillo@74 175 /* reparent to init only if init is not already the parent */
meillo@74 176 if (getppid() != 1) {
meillo@74 177 if ((pid = fork()) > 0) {
meillo@262 178 exit(0);
meillo@74 179 } else if (pid < 0) {
meillo@208 180 logwrite(LOG_ALERT, "could not fork!\n");
meillo@262 181 exit(1);
meillo@74 182 }
meillo@10 183 }
meillo@0 184
meillo@10 185 signal(SIGTERM, sigterm_handler);
meillo@421 186 makedir_rec(PID_DIR, 0755);
meillo@419 187 write_pidfile(PID_DIR "/masqmail.pid");
meillo@0 188
meillo@10 189 conf.do_verbose = FALSE;
meillo@10 190
meillo@367 191 /*
meillo@367 192 ** closing and reopening the log ensures that it is open afterwards
meillo@367 193 ** because it is possible that the log is assigned to fd 1 and gets
meillo@367 194 ** thus closes by fclose(stdout). Similar for the debugfile.
meillo@72 195 */
meillo@72 196 logclose();
meillo@10 197 fclose(stdin);
meillo@10 198 fclose(stdout);
meillo@10 199 fclose(stderr);
meillo@72 200 logopen();
meillo@10 201
meillo@208 202 logwrite(LOG_NOTICE, "%s %s daemon starting\n", PACKAGE, VERSION);
meillo@409 203 listen_port(do_listen ? conf.listen_addresses : NULL,
meillo@409 204 queue_interval, argv);
meillo@0 205 }
meillo@0 206
meillo@264 207 /* -bs or called as smtpd or in.smtpd */
meillo@10 208 static void
meillo@10 209 mode_smtp()
meillo@0 210 {
meillo@10 211 /* accept smtp message on stdin */
meillo@10 212 /* write responses to stderr. */
meillo@0 213
meillo@10 214 struct sockaddr_in saddr;
meillo@10 215 gchar *peername = NULL;
meillo@10 216 int dummy = sizeof(saddr);
meillo@0 217
meillo@10 218 conf.do_verbose = FALSE;
meillo@0 219
meillo@10 220 if (!conf.run_as_user) {
meillo@331 221 set_euidgid(conf.orig_uid, conf.orig_gid, NULL, NULL);
meillo@10 222 }
meillo@0 223
meillo@10 224 DEBUG(5) debugf("accepting smtp message on stdin\n");
meillo@0 225
meillo@10 226 if (getpeername(0, (struct sockaddr *) (&saddr), &dummy) == 0) {
meillo@10 227 peername = g_strdup(inet_ntoa(saddr.sin_addr));
meillo@10 228 } else if (errno != ENOTSOCK)
meillo@262 229 exit(1);
meillo@0 230
meillo@10 231 smtp_in(stdin, stderr, peername, NULL);
meillo@0 232 }
meillo@0 233
meillo@264 234 /* default mode if address args or -t is specified, or called as rmail */
meillo@10 235 static void
meillo@367 236 mode_accept(address *return_path, gchar *full_sender_name, guint accept_flags,
meillo@367 237 char **addresses, int addr_cnt)
meillo@0 238 {
meillo@10 239 /* accept message on stdin */
meillo@10 240 accept_error err;
meillo@10 241 message *msg = create_message();
meillo@10 242 gint i;
meillo@266 243 pid_t pid;
meillo@0 244
meillo@83 245 if (return_path && !is_privileged_user(conf.orig_uid)) {
meillo@409 246 fprintf(stderr, "must be root, %s or in group %s for "
meillo@409 247 "setting return path.\n",
meillo@409 248 DEF_MAIL_USER, DEF_MAIL_GROUP);
meillo@262 249 exit(1);
meillo@10 250 }
meillo@0 251
meillo@10 252 if (!conf.run_as_user) {
meillo@331 253 set_euidgid(conf.orig_uid, conf.orig_gid, NULL, NULL);
meillo@10 254 }
meillo@0 255
meillo@10 256 DEBUG(5) debugf("accepting message on stdin\n");
meillo@0 257
meillo@10 258 msg->received_prot = PROT_LOCAL;
meillo@276 259
meillo@276 260 /* warn if -t option and cmdline addr args */
meillo@276 261 if (addr_cnt && (accept_flags & ACC_RCPT_FROM_HEAD)) {
meillo@409 262 logwrite(LOG_ALERT, "command line address arguments are "
meillo@409 263 "now *added* to the mail header\\\n");
meillo@409 264 logwrite(LOG_ALERT, " recipient addresses (instead of "
meillo@409 265 "substracted) when -t is given.\\\n");
meillo@276 266 logwrite(LOG_ALERT, " this changed with version 0.3.1\n");
meillo@276 267 }
meillo@276 268
meillo@10 269 for (i = 0; i < addr_cnt; i++) {
meillo@266 270 if (addresses[i][0] == '|') {
meillo@409 271 logwrite(LOG_ALERT, "no pipe allowed as recipient "
meillo@409 272 "address: %s\n", addresses[i]);
meillo@276 273 /* should we better ignore this one addr? */
meillo@262 274 exit(1);
meillo@10 275 }
meillo@409 276 msg->rcpt_list = g_list_append(msg->rcpt_list,
meillo@409 277 create_address_qualified(addresses[i],
meillo@409 278 TRUE, conf.host_name));
meillo@10 279 }
meillo@0 280
meillo@10 281 /* -f option */
meillo@10 282 msg->return_path = return_path;
meillo@0 283
meillo@10 284 /* -F option */
meillo@10 285 msg->full_sender_name = full_sender_name;
meillo@0 286
meillo@266 287 err = accept_message(stdin, msg, accept_flags);
meillo@0 288
meillo@266 289 switch (err) {
meillo@266 290 case AERR_OK:
meillo@266 291 /* to continue; all other cases exit */
meillo@266 292 break;
meillo@266 293 case AERR_EOF:
meillo@266 294 fprintf(stderr, "unexpected EOF.\n");
meillo@266 295 exit(1);
meillo@266 296 case AERR_NORCPT:
meillo@266 297 fprintf(stderr, "no recipients.\n");
meillo@266 298 exit(1);
meillo@266 299 case AERR_SIZE:
meillo@266 300 fprintf(stderr, "max message size exceeded.\n");
meillo@266 301 exit(1);
meillo@266 302 default:
meillo@266 303 /* should never happen: */
meillo@266 304 fprintf(stderr, "Unknown error (%d)\r\n", err);
meillo@266 305 exit(1);
meillo@266 306 }
meillo@266 307
meillo@266 308 if (!spool_write(msg, TRUE)) {
meillo@266 309 fprintf(stderr, "Could not write spool file\n");
meillo@266 310 exit(1);
meillo@266 311 }
meillo@266 312
meillo@267 313 /* here the mail is queued and thus in our responsibility */
meillo@409 314 logwrite(LOG_NOTICE, "%s <= %s with %s\n", msg->uid,
meillo@409 315 addr_string(msg->return_path), prot_names[PROT_LOCAL]);
meillo@266 316
meillo@266 317 if (conf.do_queue) {
meillo@266 318 /* we're finished as we only need to queue it */
meillo@266 319 return;
meillo@266 320 }
meillo@266 321
meillo@266 322 /* deliver at once */
meillo@266 323 if ((pid = fork()) < 0) {
meillo@409 324 logwrite(LOG_ALERT, "could not fork for delivery, id = %s\n",
meillo@409 325 msg->uid);
meillo@266 326 } else if (pid == 0) {
meillo@266 327 conf.do_verbose = FALSE;
meillo@266 328 fclose(stdin);
meillo@266 329 fclose(stdout);
meillo@266 330 fclose(stderr);
meillo@266 331 if (deliver(msg)) {
meillo@266 332 exit(0);
meillo@10 333 } else {
meillo@267 334 /*
meillo@367 335 ** TODO: Should we really fail here? Because the
meillo@367 336 ** mail is queued already. If we fail the client
meillo@367 337 ** might submit it again. If at-once-delivery
meillo@367 338 ** is seen as an additional best-effort service,
meillo@367 339 ** then we should still exit successful here.
meillo@267 340 */
meillo@262 341 exit(1);
meillo@10 342 }
meillo@0 343 }
meillo@0 344 }
meillo@0 345
meillo@250 346 /*
meillo@367 347 ** if -Mrm is given
meillo@367 348 **
meillo@367 349 ** currently only the `rm' command is supported
meillo@367 350 ** until this changes, we don't need any facility for further commands
meillo@367 351 ** return success if at least one message had been deleted
meillo@250 352 */
meillo@250 353 static int
meillo@366 354 manipulate_queue(char *cmd, char *id[])
meillo@250 355 {
meillo@250 356 gboolean ok = FALSE;
meillo@250 357
meillo@250 358 if (strcmp(cmd, "rm") != 0) {
meillo@250 359 fprintf(stderr, "unknown command %s\n", cmd);
meillo@250 360 return FALSE;
meillo@250 361 }
meillo@250 362
meillo@250 363 set_euidgid(conf.mail_uid, conf.mail_gid, NULL, NULL);
meillo@250 364
meillo@250 365 /* privileged users may delete any mail */
meillo@250 366 if (is_privileged_user(conf.orig_uid)) {
meillo@250 367 for (; *id; id++) {
meillo@250 368 fprintf(stderr, "id: %s\n", *id);
meillo@250 369 if (queue_delete(*id)) {
meillo@250 370 ok = TRUE;
meillo@250 371 }
meillo@250 372 }
meillo@250 373 return ok;
meillo@250 374 }
meillo@250 375
meillo@250 376 struct passwd *pw = getpwuid(conf.orig_uid);
meillo@250 377 if (!pw) {
meillo@409 378 fprintf(stderr, "could not find a passwd entry for "
meillo@409 379 "uid %d: %s\n",
meillo@409 380 conf.orig_uid, strerror(errno));
meillo@250 381 return FALSE;
meillo@250 382 }
meillo@250 383
meillo@250 384 /* non-privileged users may only delete their own messages */
meillo@250 385 for (; *id; id++) {
meillo@349 386 message *msg = msg_spool_read(*id);
meillo@250 387
meillo@250 388 fprintf(stderr, "id: %s\n", *id);
meillo@250 389
meillo@250 390 if (!msg->ident) {
meillo@409 391 fprintf(stderr, "message %s does not have an ident\n",
meillo@409 392 *id);
meillo@250 393 continue;
meillo@250 394 }
meillo@250 395 if (strcmp(pw->pw_name, msg->ident) != 0) {
meillo@250 396 fprintf(stderr, "you do not own message id %s\n", *id);
meillo@250 397 continue;
meillo@250 398 }
meillo@250 399
meillo@378 400 if (msg->received_host || (msg->received_prot != PROT_LOCAL)) {
meillo@409 401 fprintf(stderr, "message %s was not received "
meillo@409 402 "locally\n", *id);
meillo@250 403 continue;
meillo@250 404 }
meillo@250 405
meillo@250 406 ok = queue_delete(*id);
meillo@250 407 }
meillo@250 408 return ok;
meillo@250 409 }
meillo@250 410
meillo@264 411 /* -qo, -q (without argument), or called as runq */
meillo@251 412 static int
meillo@366 413 run_queue(gboolean do_runq, gboolean do_runq_online, char *route_name)
meillo@251 414 {
meillo@251 415 int ret;
meillo@251 416
meillo@251 417 /* queue runs */
meillo@251 418 set_identity(conf.orig_uid, "queue run");
meillo@251 419
meillo@251 420 if (do_runq) {
meillo@251 421 ret = queue_run();
meillo@251 422 }
meillo@251 423
meillo@251 424 if (do_runq_online) {
meillo@251 425 if (route_name) {
meillo@409 426 conf.online_query = g_strdup_printf("/bin/echo %s",
meillo@409 427 route_name);
meillo@251 428 }
meillo@367 429 /*
meillo@367 430 ** TODO: change behavior of `-qo without argument'?
meillo@367 431 ** Because that behavior is included in -q.
meillo@367 432 */
meillo@251 433 ret = queue_run_online();
meillo@251 434 }
meillo@251 435 return ret;
meillo@251 436 }
meillo@251 437
meillo@264 438 /* -bV or default mode if neither addr arg nor -t */
meillo@261 439 static void
meillo@261 440 mode_version(void)
meillo@261 441 {
meillo@261 442 gchar *with_resolver = "";
meillo@261 443 gchar *with_auth = "";
meillo@261 444
meillo@261 445 #ifdef ENABLE_RESOLVER
meillo@261 446 with_resolver = " +resolver";
meillo@261 447 #endif
meillo@261 448 #ifdef ENABLE_AUTH
meillo@261 449 with_auth = " +auth";
meillo@261 450 #endif
meillo@261 451
meillo@378 452 printf("%s %s%s%s\n", PACKAGE, VERSION, with_resolver, with_auth);
meillo@261 453 }
meillo@261 454
meillo@281 455 void
meillo@281 456 set_mode(enum mta_mode mode)
meillo@281 457 {
meillo@281 458 if (mta_mode && mta_mode!=mode) {
meillo@409 459 fprintf(stderr, "operation mode was already specified "
meillo@409 460 "(%d vs. %d)\n", mta_mode, mode);
meillo@281 461 exit(1);
meillo@281 462 }
meillo@281 463
meillo@281 464 mta_mode = mode;
meillo@281 465 return;
meillo@281 466 }
meillo@281 467
meillo@0 468 int
meillo@0 469 main(int argc, char *argv[])
meillo@0 470 {
meillo@251 471 gchar *progname;
meillo@366 472 char *opt;
meillo@249 473 gint arg;
meillo@0 474
meillo@10 475 gboolean do_listen = FALSE;
meillo@10 476 gboolean do_runq = FALSE;
meillo@10 477 gboolean do_runq_online = FALSE;
meillo@10 478 gboolean do_queue = FALSE;
meillo@10 479 gint queue_interval = 0;
meillo@251 480 gchar *M_cmd = NULL;
meillo@10 481 gboolean opt_t = FALSE;
meillo@10 482 gboolean opt_i = FALSE;
meillo@251 483 gchar *conf_file = CONF_FILE;
meillo@10 484 gchar *route_name = NULL;
meillo@10 485 gchar *f_address = NULL;
meillo@251 486 address *return_path = NULL; /* may be changed by -f option */
meillo@10 487 gchar *full_sender_name = NULL;
meillo@251 488 gboolean do_verbose = FALSE;
meillo@251 489 gint debug_level = -1;
meillo@0 490
meillo@260 491 /* strip the path part */
meillo@261 492 progname = strrchr(argv[0], '/');
meillo@261 493 progname = (progname) ? progname+1 : argv[0];
meillo@0 494
meillo@10 495 if (strcmp(progname, "mailq") == 0) {
meillo@10 496 mta_mode = MODE_LIST;
meillo@10 497 } else if (strcmp(progname, "mailrm") == 0) {
meillo@10 498 mta_mode = MODE_MCMD;
meillo@10 499 M_cmd = "rm";
meillo@284 500 } else if (strcmp(progname, "newaliases") == 0) {
meillo@284 501 mta_mode = MODE_BI;
meillo@10 502 } else if (strcmp(progname, "rmail") == 0) {
meillo@367 503 /*
meillo@367 504 ** the `rmail' alias should probably be removed now
meillo@367 505 ** that we have the rmail script. But let's keep it
meillo@367 506 ** for some while for compatibility. 2010-06-19
meillo@367 507 */
meillo@10 508 mta_mode = MODE_ACCEPT;
meillo@10 509 opt_i = TRUE;
meillo@284 510 } else if (strcmp(progname, "runq") == 0) {
meillo@284 511 mta_mode = MODE_RUNQUEUE;
meillo@284 512 do_runq = TRUE;
meillo@284 513 } else if (strcmp(progname, "smtpd") == 0
meillo@284 514 || strcmp(progname, "in.smtpd") == 0) {
meillo@10 515 mta_mode = MODE_SMTP;
meillo@10 516 }
meillo@0 517
meillo@10 518 /* parse cmd line */
meillo@249 519 for (arg=1; arg<argc && argv[arg][0]=='-'; arg++) {
meillo@251 520 opt = argv[arg] + 1; /* points to the char after the dash */
meillo@10 521
meillo@249 522 if (strcmp(opt, "-") == 0) {
meillo@249 523 /* everything after `--' are address arguments */
meillo@249 524 arg++;
meillo@249 525 break;
meillo@10 526
meillo@278 527 } else if (strcmp(opt, "bm") == 0) {
meillo@281 528 set_mode(MODE_ACCEPT);
meillo@278 529
meillo@249 530 } else if (strcmp(opt, "bd") == 0) {
meillo@281 531 set_mode(MODE_DAEMON);
meillo@249 532 do_listen = TRUE;
meillo@249 533
meillo@249 534 } else if (strcmp(opt, "bi") == 0) {
meillo@281 535 set_mode(MODE_BI);
meillo@249 536
meillo@249 537 } else if (strcmp(opt, "bs") == 0) {
meillo@281 538 set_mode(MODE_SMTP);
meillo@249 539
meillo@249 540 } else if (strcmp(opt, "bp") == 0) {
meillo@281 541 set_mode(MODE_LIST);
meillo@249 542
meillo@249 543 } else if (strcmp(opt, "bV") == 0) {
meillo@281 544 set_mode(MODE_VERSION);
meillo@249 545
meillo@249 546 } else if (strncmp(opt, "B", 1) == 0) {
meillo@249 547 /* we ignore this and throw the argument away */
meillo@249 548 get_optarg(argv, &arg, opt+1);
meillo@249 549
meillo@249 550 } else if (strncmp(opt, "C", 1) == 0) {
meillo@251 551 conf_file = get_optarg(argv, &arg, opt+1);
meillo@251 552 if (!conf_file) {
meillo@409 553 fprintf(stderr, "-C requires filename arg.\n");
meillo@262 554 exit(1);
meillo@10 555 }
meillo@249 556
meillo@249 557 } else if (strncmp(opt, "d", 1) == 0) {
meillo@249 558 if (getuid() != 0) {
meillo@409 559 fprintf(stderr, "only root may set the "
meillo@409 560 "debug level.\n");
meillo@262 561 exit(1);
meillo@249 562 }
meillo@249 563 char *lvl = get_optarg(argv, &arg, opt+1);
meillo@249 564 if (!lvl) {
meillo@409 565 fprintf(stderr, "-d requires number arg.\n");
meillo@262 566 exit(1);
meillo@249 567 }
meillo@249 568 debug_level = atoi(lvl);
meillo@249 569
meillo@249 570 } else if (strncmp(opt, "f", 1) == 0) {
meillo@249 571 /* set return path */
meillo@249 572 gchar *address = get_optarg(argv, &arg, opt+1);
meillo@249 573 if (!address) {
meillo@409 574 fprintf(stderr, "-f requires address arg.\n");
meillo@262 575 exit(1);
meillo@249 576 }
meillo@249 577 f_address = g_strdup(address);
meillo@249 578
meillo@249 579 } else if (strncmp(opt, "F", 1) == 0) {
meillo@249 580 full_sender_name = get_optarg(argv, &arg, opt+1);
meillo@249 581 if (!full_sender_name) {
meillo@409 582 fprintf(stderr, "-F requires name arg.\n");
meillo@262 583 exit(1);
meillo@249 584 }
meillo@249 585
meillo@249 586 } else if (strcmp(opt, "i") == 0) {
meillo@249 587 opt_i = TRUE;
meillo@249 588
meillo@249 589 } else if (strcmp(opt, "m") == 0) {
meillo@249 590 /* ignore -m (me too) switch (see man page) */
meillo@249 591
meillo@249 592 } else if (strcmp(opt, "Mrm") == 0) {
meillo@281 593 set_mode(MODE_MCMD);
meillo@249 594 M_cmd = "rm";
meillo@249 595
meillo@249 596 } else if (strcmp(opt, "odq") == 0) {
meillo@249 597 do_queue = TRUE;
meillo@249 598
meillo@249 599 } else if (strcmp(opt, "oi") == 0) {
meillo@257 600 opt_i = TRUE;
meillo@249 601
meillo@249 602 } else if (strncmp(opt, "o", 1) == 0) {
meillo@249 603 /* ignore all other -oXXX options */
meillo@249 604
meillo@249 605 } else if (strncmp(opt, "qo", 2) == 0) {
meillo@278 606 /* must be before the `q' check */
meillo@281 607 set_mode(MODE_RUNQUEUE);
meillo@249 608 do_runq_online = TRUE;
meillo@249 609 /* can be NULL, then we use online detection method */
meillo@290 610 /* TODO: behavior might change if it is NULL */
meillo@249 611 route_name = get_optarg(argv, &arg, opt+2);
meillo@290 612 if (!route_name) {
meillo@409 613 fprintf(stderr, "Please do not use -qo "
meillo@409 614 "without argument anymore; "
meillo@409 615 "use -q instead.\n");
meillo@409 616 fprintf(stderr, "The behavior for -qo without "
meillo@409 617 "argument is likely to "
meillo@409 618 "change.\n");
meillo@290 619 }
meillo@249 620
meillo@249 621 } else if (strncmp(opt, "q", 1) == 0) {
meillo@249 622 /* must be after the `qo' check */
meillo@249 623 gchar *optarg;
meillo@249 624
meillo@251 625 optarg = get_optarg(argv, &arg, opt+1);
meillo@251 626 if (optarg) {
meillo@409 627 /* do regular queue runs */
meillo@281 628 set_mode(MODE_DAEMON);
meillo@254 629 queue_interval = time_interval(optarg);
meillo@281 630 } else {
meillo@409 631 /* do a single queue run */
meillo@281 632 set_mode(MODE_RUNQUEUE);
meillo@281 633 do_runq = TRUE;
meillo@249 634 }
meillo@249 635
meillo@249 636 } else if (strcmp(opt, "t") == 0) {
meillo@249 637 opt_t = TRUE;
meillo@249 638
meillo@249 639 } else if (strcmp(opt, "v") == 0) {
meillo@249 640 do_verbose = TRUE;
meillo@249 641
meillo@10 642 } else {
meillo@249 643 fprintf(stderr, "unrecognized option `-%s'\n", opt);
meillo@262 644 exit(1);
meillo@10 645 }
meillo@0 646 }
meillo@0 647
meillo@281 648 if (!mta_mode && arg==argc && !opt_t) {
meillo@278 649 /*
meillo@367 650 ** In this case no rcpts can be found, thus no mail
meillo@367 651 ** can be sent, thus masqmail will always fail. We
meillo@367 652 ** rather do something better instead. This covers
meillo@367 653 ** also the case of calling masqmail without args.
meillo@278 654 */
meillo@281 655 mode_version();
meillo@281 656 exit(0);
meillo@259 657 }
meillo@259 658
meillo@10 659 if (mta_mode == MODE_VERSION) {
meillo@261 660 mode_version();
meillo@262 661 exit(0);
meillo@10 662 }
meillo@0 663
meillo@281 664 if (!mta_mode) {
meillo@281 665 mta_mode = MODE_ACCEPT;
meillo@281 666 }
meillo@281 667
meillo@10 668 /* initialize random generator */
meillo@10 669 srand(time(NULL));
meillo@10 670 /* ignore SIGPIPE signal */
meillo@10 671 signal(SIGPIPE, SIG_IGN);
meillo@0 672
meillo@73 673 /* close all possibly open file descriptors, except std{in,out,err} */
meillo@10 674 {
meillo@10 675 int i, max_fd = sysconf(_SC_OPEN_MAX);
meillo@0 676
meillo@251 677 if (max_fd <= 0) {
meillo@10 678 max_fd = 64;
meillo@251 679 }
meillo@251 680 for (i=3; i<max_fd; i++) {
meillo@10 681 close(i);
meillo@251 682 }
meillo@10 683 }
meillo@0 684
meillo@10 685 init_conf();
meillo@0 686
meillo@367 687 /*
meillo@367 688 ** if we are not privileged, and the config file was changed we
meillo@367 689 ** implicetely set the the run_as_user flag and give up all
meillo@367 690 ** privileges.
meillo@367 691 **
meillo@367 692 ** So it is possible for a user to run his own daemon without
meillo@367 693 ** breaking security.
meillo@367 694 */
meillo@251 695 if ((strcmp(conf_file, CONF_FILE) != 0) && (conf.orig_uid != 0)) {
meillo@421 696 logwrite(LOG_NOTICE, "Changing to run_as_user.\n");
meillo@251 697 conf.run_as_user = TRUE;
meillo@331 698 set_euidgid(conf.orig_uid, conf.orig_gid, NULL, NULL);
meillo@331 699 if (setgid(conf.orig_gid)) {
meillo@409 700 logwrite(LOG_ALERT, "could not set gid to %d: %s\n",
meillo@409 701 conf.orig_gid, strerror(errno));
meillo@331 702 exit(1);
meillo@331 703 }
meillo@331 704 if (setuid(conf.orig_uid)) {
meillo@409 705 logwrite(LOG_ALERT, "could not set uid to %d: %s\n",
meillo@409 706 conf.orig_uid, strerror(errno));
meillo@331 707 exit(1);
meillo@331 708 }
meillo@10 709 }
meillo@0 710
meillo@155 711 conf.log_dir = LOG_DIR;
meillo@397 712 conf.debug_level = debug_level; /* for debuggin during read_conf() */
meillo@288 713 /* FIXME: fails if we run as user */
meillo@155 714 logopen();
meillo@155 715 if (!read_conf(conf_file)) {
meillo@409 716 logwrite(LOG_ALERT, "SHUTTING DOWN due to problems reading "
meillo@409 717 "config\n");
meillo@155 718 exit(5);
meillo@155 719 }
meillo@155 720 logclose();
meillo@0 721
meillo@251 722 if (do_queue) {
meillo@10 723 conf.do_queue = TRUE;
meillo@251 724 }
meillo@251 725 if (do_verbose) {
meillo@10 726 conf.do_verbose = TRUE;
meillo@251 727 }
meillo@251 728 if (debug_level >= 0) { /* if >= 0, it was given by argument */
meillo@10 729 conf.debug_level = debug_level;
meillo@251 730 }
meillo@0 731
meillo@367 732 /*
meillo@367 733 ** It appears that changing to / ensures that we are never in
meillo@367 734 ** a directory which we cannot access. This situation could be
meillo@367 735 ** possible after changing identity.
meillo@367 736 ** Maybe we should only change to / if we not run as user, to
meillo@367 737 ** allow relative paths for log files in test setups for
meillo@367 738 ** instance.
meillo@46 739 */
meillo@10 740 chdir("/");
meillo@0 741
meillo@10 742 if (!conf.run_as_user) {
meillo@10 743 if (setgid(0) != 0) {
meillo@409 744 fprintf(stderr, "could not set gid to 0. "
meillo@409 745 "Is the setuid bit set? : %s\n",
meillo@409 746 strerror(errno));
meillo@262 747 exit(1);
meillo@10 748 }
meillo@10 749 if (setuid(0) != 0) {
meillo@409 750 fprintf(stderr, "could not gain root privileges. "
meillo@409 751 "Is the setuid bit set? : %s\n",
meillo@409 752 strerror(errno));
meillo@262 753 exit(1);
meillo@10 754 }
meillo@10 755 }
meillo@0 756
meillo@421 757 if (conf.run_as_user) {
meillo@421 758 logwrite(LOG_NOTICE, "Using spool directory `%s' for "
meillo@421 759 "lock files.\n", conf.spool_dir);
meillo@421 760 conf.lock_dir = conf.spool_dir;
meillo@421 761 } else {
meillo@421 762 int olduid, oldgid;
meillo@421 763
meillo@421 764 set_euidgid(conf.mail_uid, conf.mail_gid, &olduid, &oldgid);
meillo@421 765 makedir_rec(conf.lock_dir, 0775);
meillo@421 766 set_euidgid(olduid, oldgid, NULL, NULL);
meillo@421 767 }
meillo@421 768
meillo@10 769 if (!logopen()) {
meillo@10 770 fprintf(stderr, "could not open log file\n");
meillo@262 771 exit(1);
meillo@10 772 }
meillo@0 773
meillo@415 774 DEBUG(1) debugf("----STARTING---- masqmail %s\n", VERSION);
meillo@0 775
meillo@10 776 DEBUG(5) {
meillo@10 777 gchar **str = argv;
meillo@10 778 debugf("args: \n");
meillo@10 779 while (*str) {
meillo@10 780 debugf("%s \n", *str);
meillo@10 781 str++;
meillo@10 782 }
meillo@10 783 }
meillo@10 784 DEBUG(5) debugf("queue_interval = %d\n", queue_interval);
meillo@0 785
meillo@10 786 if (f_address) {
meillo@409 787 return_path = create_address_qualified(f_address, TRUE,
meillo@409 788 conf.host_name);
meillo@10 789 g_free(f_address);
meillo@10 790 if (!return_path) {
meillo@409 791 fprintf(stderr, "invalid RFC821 address: %s\n",
meillo@409 792 f_address);
meillo@262 793 exit(1);
meillo@10 794 }
meillo@10 795 }
meillo@10 796
meillo@10 797 switch (mta_mode) {
meillo@10 798 case MODE_DAEMON:
meillo@10 799 mode_daemon(do_listen, queue_interval, argv);
meillo@10 800 break;
meillo@251 801
meillo@10 802 case MODE_RUNQUEUE:
meillo@251 803 exit(run_queue(do_runq, do_runq_online, route_name) ? 0 : 1);
meillo@10 804 break;
meillo@10 805
meillo@10 806 case MODE_SMTP:
meillo@10 807 mode_smtp();
meillo@10 808 break;
meillo@10 809
meillo@10 810 case MODE_LIST:
meillo@10 811 queue_list();
meillo@10 812 break;
meillo@10 813
meillo@10 814 case MODE_BI:
meillo@262 815 exit(0);
meillo@10 816 break; /* well... */
meillo@10 817
meillo@10 818 case MODE_MCMD:
meillo@250 819 exit(manipulate_queue(M_cmd, &argv[arg]) ? 0 : 1);
meillo@10 820 break;
meillo@10 821
meillo@10 822 case MODE_ACCEPT:
meillo@10 823 {
meillo@409 824 guint accept_flags = 0;
meillo@409 825 accept_flags |= (opt_t ? ACC_RCPT_FROM_HEAD : 0);
meillo@409 826 accept_flags |= (opt_i ?
meillo@409 827 ACC_DOT_IGNORE : ACC_NODOT_RELAX);
meillo@409 828 mode_accept(return_path, full_sender_name,
meillo@409 829 accept_flags, argv + arg, argc - arg);
meillo@258 830 exit(0);
meillo@10 831 }
meillo@10 832 break;
meillo@251 833
meillo@10 834 default:
meillo@10 835 fprintf(stderr, "unknown mode: %d\n", mta_mode);
meillo@10 836 break;
meillo@0 837 }
meillo@0 838
meillo@10 839 logclose();
meillo@0 840
meillo@263 841 exit(0);
meillo@0 842 }