14227346bSdist /* 20942ea6aSbostic * Copyright (c) 1983 Eric P. Allman 32b191fa3Sbostic * Copyright (c) 1988, 1993 42b191fa3Sbostic * The Regents of the University of California. All rights reserved. 5e70a7521Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 74227346bSdist */ 84227346bSdist 94227346bSdist #ifndef lint 10*5288e21aSeric static char sccsid[] = "@(#)deliver.c 8.6 (Berkeley) 07/20/93"; 11e70a7521Sbostic #endif /* not lint */ 124227346bSdist 13fcde9cc8Sbostic #include "sendmail.h" 14a8c080f0Seric #include <signal.h> 15f28da541Smiriam #include <netdb.h> 16911693bfSbostic #include <errno.h> 17134746fbSeric #ifdef NAMED_BIND 18912a731aSbostic #include <arpa/nameser.h> 19912a731aSbostic #include <resolv.h> 20f170942cSeric 21f170942cSeric extern int h_errno; 22134746fbSeric #endif 2325a99e2eSeric 2425a99e2eSeric /* 259c9e68d9Seric ** SENDALL -- actually send all the messages. 269c9e68d9Seric ** 279c9e68d9Seric ** Parameters: 289c9e68d9Seric ** e -- the envelope to send. 299c9e68d9Seric ** mode -- the delivery mode to use. If SM_DEFAULT, use 309c9e68d9Seric ** the current e->e_sendmode. 319c9e68d9Seric ** 329c9e68d9Seric ** Returns: 339c9e68d9Seric ** none. 349c9e68d9Seric ** 359c9e68d9Seric ** Side Effects: 369c9e68d9Seric ** Scans the send lists and sends everything it finds. 379c9e68d9Seric ** Delivers any appropriate error messages. 389c9e68d9Seric ** If we are running in a non-interactive mode, takes the 399c9e68d9Seric ** appropriate action. 409c9e68d9Seric */ 419c9e68d9Seric 429c9e68d9Seric sendall(e, mode) 439c9e68d9Seric ENVELOPE *e; 449c9e68d9Seric char mode; 459c9e68d9Seric { 469c9e68d9Seric register ADDRESS *q; 479c9e68d9Seric char *owner; 489c9e68d9Seric int otherowners; 499c9e68d9Seric register ENVELOPE *ee; 509c9e68d9Seric ENVELOPE *splitenv = NULL; 516103d9b4Seric bool announcequeueup; 529c9e68d9Seric 537880f3e4Seric /* 547880f3e4Seric ** If we have had global, fatal errors, don't bother sending 557880f3e4Seric ** the message at all if we are in SMTP mode. Local errors 567880f3e4Seric ** (e.g., a single address failing) will still cause the other 577880f3e4Seric ** addresses to be sent. 587880f3e4Seric */ 597880f3e4Seric 607880f3e4Seric if (bitset(EF_FATALERRS, e->e_flags) && OpMode == MD_SMTP) 61896b16f6Seric { 62896b16f6Seric e->e_flags |= EF_CLRQUEUE; 63896b16f6Seric return; 64896b16f6Seric } 65896b16f6Seric 669c9e68d9Seric /* determine actual delivery mode */ 679c9e68d9Seric if (mode == SM_DEFAULT) 689c9e68d9Seric { 699c9e68d9Seric mode = e->e_sendmode; 709c9e68d9Seric if (mode != SM_VERIFY && 719c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 729c9e68d9Seric mode = SM_QUEUE; 736103d9b4Seric announcequeueup = mode == SM_QUEUE; 749c9e68d9Seric } 756103d9b4Seric else 766103d9b4Seric announcequeueup = FALSE; 779c9e68d9Seric 789c9e68d9Seric if (tTd(13, 1)) 799c9e68d9Seric { 809c9e68d9Seric printf("\nSENDALL: mode %c, e_from ", mode); 819c9e68d9Seric printaddr(&e->e_from, FALSE); 829c9e68d9Seric printf("sendqueue:\n"); 839c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 849c9e68d9Seric } 859c9e68d9Seric 869c9e68d9Seric /* 879c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 889c9e68d9Seric ** Check to make sure the hop count is reasonable. 899c9e68d9Seric ** Delete sends to the sender in mailing lists. 909c9e68d9Seric */ 919c9e68d9Seric 929c9e68d9Seric CurEnv = e; 939c9e68d9Seric 949c9e68d9Seric if (e->e_hopcount > MaxHopCount) 959c9e68d9Seric { 969c9e68d9Seric errno = 0; 979c9e68d9Seric syserr("554 too many hops %d (%d max): from %s, to %s", 989c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 999c9e68d9Seric e->e_sendqueue->q_paddr); 1009c9e68d9Seric return; 1019c9e68d9Seric } 1029c9e68d9Seric 103b8004690Seric /* 104b8004690Seric ** Do sender deletion. 105b8004690Seric ** 106b8004690Seric ** If the sender has the QQUEUEUP flag set, skip this. 107b8004690Seric ** This can happen if the name server is hosed when you 108b8004690Seric ** are trying to send mail. The result is that the sender 109b8004690Seric ** is instantiated in the queue as a recipient. 110b8004690Seric */ 111b8004690Seric 112b8004690Seric if (!MeToo && !bitset(QQUEUEUP, e->e_from.q_flags)) 1139c9e68d9Seric { 1149c9e68d9Seric if (tTd(13, 5)) 1159c9e68d9Seric { 1169c9e68d9Seric printf("sendall: QDONTSEND "); 1179c9e68d9Seric printaddr(&e->e_from, FALSE); 1189c9e68d9Seric } 1199c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 1209c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1219c9e68d9Seric } 1229c9e68d9Seric 123ce5531bdSeric /* 124ce5531bdSeric ** Handle alias owners. 125ce5531bdSeric ** 126ce5531bdSeric ** We scan up the q_alias chain looking for owners. 127ce5531bdSeric ** We discard owners that are the same as the return path. 128ce5531bdSeric */ 129ce5531bdSeric 130ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 131ce5531bdSeric { 132ce5531bdSeric register struct address *a; 133ce5531bdSeric 134ce5531bdSeric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 135ce5531bdSeric continue; 136ce5531bdSeric if (a != NULL) 137ce5531bdSeric q->q_owner = a->q_owner; 138ce5531bdSeric 139ce5531bdSeric if (q->q_owner != NULL && 140ce5531bdSeric !bitset(QDONTSEND, q->q_flags) && 141ce5531bdSeric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 142ce5531bdSeric q->q_owner = NULL; 143ce5531bdSeric } 144ce5531bdSeric 145ce5531bdSeric owner = ""; 146ce5531bdSeric otherowners = 1; 147ce5531bdSeric while (owner != NULL && otherowners > 0) 148ce5531bdSeric { 149ce5531bdSeric owner = NULL; 150ce5531bdSeric otherowners = 0; 151ce5531bdSeric 152ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 153ce5531bdSeric { 154ce5531bdSeric if (bitset(QDONTSEND, q->q_flags)) 155ce5531bdSeric continue; 156ce5531bdSeric 157ce5531bdSeric if (q->q_owner != NULL) 158ce5531bdSeric { 159ce5531bdSeric if (owner == NULL) 160ce5531bdSeric owner = q->q_owner; 161ce5531bdSeric else if (owner != q->q_owner) 162ce5531bdSeric { 163ce5531bdSeric if (strcmp(owner, q->q_owner) == 0) 164ce5531bdSeric { 165ce5531bdSeric /* make future comparisons cheap */ 166ce5531bdSeric q->q_owner = owner; 167ce5531bdSeric } 168ce5531bdSeric else 169ce5531bdSeric { 170ce5531bdSeric otherowners++; 171ce5531bdSeric } 172ce5531bdSeric owner = q->q_owner; 173ce5531bdSeric } 174ce5531bdSeric } 175ce5531bdSeric else 176ce5531bdSeric { 177ce5531bdSeric otherowners++; 178ce5531bdSeric } 179ce5531bdSeric } 180ce5531bdSeric 181ce5531bdSeric if (owner != NULL && otherowners > 0) 182ce5531bdSeric { 183ce5531bdSeric extern HDR *copyheader(); 184ce5531bdSeric extern ADDRESS *copyqueue(); 185ce5531bdSeric 186ce5531bdSeric /* 187ce5531bdSeric ** Split this envelope into two. 188ce5531bdSeric */ 189ce5531bdSeric 190ce5531bdSeric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 191ce5531bdSeric *ee = *e; 192ce5531bdSeric ee->e_id = NULL; 193ce5531bdSeric (void) queuename(ee, '\0'); 194ce5531bdSeric 195ce5531bdSeric if (tTd(13, 1)) 196ce5531bdSeric printf("sendall: split %s into %s\n", 197ce5531bdSeric e->e_id, ee->e_id); 198ce5531bdSeric 199ce5531bdSeric ee->e_header = copyheader(e->e_header); 200ce5531bdSeric ee->e_sendqueue = copyqueue(e->e_sendqueue); 201ce5531bdSeric ee->e_errorqueue = copyqueue(e->e_errorqueue); 202ce5531bdSeric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS); 203ce5531bdSeric setsender(owner, ee, NULL, TRUE); 204ce5531bdSeric if (tTd(13, 5)) 205ce5531bdSeric { 206ce5531bdSeric printf("sendall(split): QDONTSEND "); 207ce5531bdSeric printaddr(&ee->e_from, FALSE); 208ce5531bdSeric } 209ce5531bdSeric ee->e_from.q_flags |= QDONTSEND; 210ce5531bdSeric ee->e_dfp = NULL; 211ce5531bdSeric ee->e_xfp = NULL; 212ce5531bdSeric ee->e_lockfp = NULL; 213ce5531bdSeric ee->e_df = NULL; 214ce5531bdSeric ee->e_errormode = EM_MAIL; 215ce5531bdSeric ee->e_sibling = splitenv; 216ce5531bdSeric splitenv = ee; 217ce5531bdSeric 218ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 219ce5531bdSeric if (q->q_owner == owner) 220ce5531bdSeric q->q_flags |= QDONTSEND; 221ce5531bdSeric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 222ce5531bdSeric if (q->q_owner != owner) 223ce5531bdSeric q->q_flags |= QDONTSEND; 224ce5531bdSeric 225ce5531bdSeric if (e->e_df != NULL && mode != SM_VERIFY) 226ce5531bdSeric { 227ce5531bdSeric ee->e_dfp = NULL; 228ce5531bdSeric ee->e_df = newstr(queuename(ee, 'd')); 229ce5531bdSeric if (link(e->e_df, ee->e_df) < 0) 230ce5531bdSeric { 231ce5531bdSeric syserr("sendall: link(%s, %s)", 232ce5531bdSeric e->e_df, ee->e_df); 233ce5531bdSeric } 234ce5531bdSeric } 235ce5531bdSeric 236ce5531bdSeric if (mode != SM_VERIFY) 237ce5531bdSeric openxscript(ee); 238ce5531bdSeric #ifdef LOG 239ce5531bdSeric if (LogLevel > 4) 240ce5531bdSeric syslog(LOG_INFO, "%s: clone %s", 241ce5531bdSeric ee->e_id, e->e_id); 242ce5531bdSeric #endif 243ce5531bdSeric } 244ce5531bdSeric } 245ce5531bdSeric 246ce5531bdSeric if (owner != NULL) 247ce5531bdSeric { 248ce5531bdSeric setsender(owner, e, NULL, TRUE); 249ce5531bdSeric if (tTd(13, 5)) 250ce5531bdSeric { 251ce5531bdSeric printf("sendall(owner): QDONTSEND "); 252ce5531bdSeric printaddr(&e->e_from, FALSE); 253ce5531bdSeric } 254ce5531bdSeric e->e_from.q_flags |= QDONTSEND; 255ce5531bdSeric e->e_errormode = EM_MAIL; 256ce5531bdSeric } 257ce5531bdSeric 258c1ac89b1Seric # ifdef QUEUE 259c1ac89b1Seric if ((mode == SM_QUEUE || mode == SM_FORK || 260c1ac89b1Seric (mode != SM_VERIFY && SuperSafe)) && 261c1ac89b1Seric !bitset(EF_INQUEUE, e->e_flags)) 262c1ac89b1Seric { 263c1ac89b1Seric /* be sure everything is instantiated in the queue */ 2646103d9b4Seric queueup(e, TRUE, announcequeueup); 265ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2666103d9b4Seric queueup(ee, TRUE, announcequeueup); 267c1ac89b1Seric } 268c1ac89b1Seric #endif /* QUEUE */ 269c1ac89b1Seric 270ce5531bdSeric if (splitenv != NULL) 271ce5531bdSeric { 272ce5531bdSeric if (tTd(13, 1)) 273ce5531bdSeric { 274ce5531bdSeric printf("\nsendall: Split queue; remaining queue:\n"); 275ce5531bdSeric printaddr(e->e_sendqueue, TRUE); 276ce5531bdSeric } 277ce5531bdSeric 278ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 279ce5531bdSeric { 280ce5531bdSeric CurEnv = ee; 281ce5531bdSeric sendenvelope(ee, mode); 282ce5531bdSeric } 283ce5531bdSeric 284ce5531bdSeric CurEnv = e; 285ce5531bdSeric } 286ce5531bdSeric sendenvelope(e, mode); 287ce5531bdSeric 288ce5531bdSeric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 289ce5531bdSeric dropenvelope(splitenv); 290ce5531bdSeric } 291ce5531bdSeric 292ce5531bdSeric sendenvelope(e, mode) 293ce5531bdSeric register ENVELOPE *e; 294ce5531bdSeric char mode; 295ce5531bdSeric { 296ce5531bdSeric bool oldverbose; 297ce5531bdSeric int pid; 298ce5531bdSeric register ADDRESS *q; 299ce5531bdSeric #ifdef LOCKF 300ce5531bdSeric struct flock lfd; 301ce5531bdSeric #endif 302ce5531bdSeric 3037880f3e4Seric /* 3047880f3e4Seric ** If we have had global, fatal errors, don't bother sending 3057880f3e4Seric ** the message at all if we are in SMTP mode. Local errors 3067880f3e4Seric ** (e.g., a single address failing) will still cause the other 3077880f3e4Seric ** addresses to be sent. 3087880f3e4Seric */ 3097880f3e4Seric 3107880f3e4Seric if (bitset(EF_FATALERRS, e->e_flags) && OpMode == MD_SMTP) 3117880f3e4Seric { 3127880f3e4Seric e->e_flags |= EF_CLRQUEUE; 3137880f3e4Seric return; 3147880f3e4Seric } 3157880f3e4Seric 316ce5531bdSeric oldverbose = Verbose; 317c1ac89b1Seric switch (mode) 318c1ac89b1Seric { 319c1ac89b1Seric case SM_VERIFY: 320c1ac89b1Seric Verbose = TRUE; 321c1ac89b1Seric break; 322c1ac89b1Seric 323c1ac89b1Seric case SM_QUEUE: 324c1ac89b1Seric queueonly: 325c1ac89b1Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 326c1ac89b1Seric return; 327c1ac89b1Seric 328c1ac89b1Seric case SM_FORK: 329c1ac89b1Seric if (e->e_xfp != NULL) 330c1ac89b1Seric (void) fflush(e->e_xfp); 331c1ac89b1Seric 332c1ac89b1Seric # ifdef LOCKF 333c1ac89b1Seric /* 334c1ac89b1Seric ** Since lockf has the interesting semantic that the 335c1ac89b1Seric ** lock is lost when we fork, we have to risk losing 336c1ac89b1Seric ** the lock here by closing before the fork, and then 337c1ac89b1Seric ** trying to get it back in the child. 338c1ac89b1Seric */ 339c1ac89b1Seric 340c1ac89b1Seric if (e->e_lockfp != NULL) 341c1ac89b1Seric { 342c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 343c1ac89b1Seric e->e_lockfp = NULL; 344c1ac89b1Seric } 345c1ac89b1Seric # endif /* LOCKF */ 346c1ac89b1Seric 347c1ac89b1Seric pid = fork(); 348c1ac89b1Seric if (pid < 0) 349c1ac89b1Seric { 350c1ac89b1Seric goto queueonly; 351c1ac89b1Seric } 352c1ac89b1Seric else if (pid > 0) 353c1ac89b1Seric { 354c1ac89b1Seric /* be sure we leave the temp files to our child */ 355c1ac89b1Seric e->e_id = e->e_df = NULL; 356c1ac89b1Seric # ifndef LOCKF 357c1ac89b1Seric if (e->e_lockfp != NULL) 358c1ac89b1Seric { 359c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 360c1ac89b1Seric e->e_lockfp = NULL; 361c1ac89b1Seric } 362c1ac89b1Seric # endif 363c1ac89b1Seric 364c1ac89b1Seric /* close any random open files in the envelope */ 365c1ac89b1Seric if (e->e_dfp != NULL) 366c1ac89b1Seric { 367c1ac89b1Seric (void) xfclose(e->e_dfp, "sendenvelope", "dfp"); 368c1ac89b1Seric e->e_dfp = NULL; 369c1ac89b1Seric } 370c1ac89b1Seric if (e->e_xfp != NULL) 371c1ac89b1Seric { 372c1ac89b1Seric (void) xfclose(e->e_xfp, "sendenvelope", "xfp"); 373c1ac89b1Seric e->e_xfp = NULL; 374c1ac89b1Seric } 375c1ac89b1Seric return; 376c1ac89b1Seric } 377c1ac89b1Seric 378c1ac89b1Seric /* double fork to avoid zombies */ 379c1ac89b1Seric if (fork() > 0) 380c1ac89b1Seric exit(EX_OK); 381c1ac89b1Seric 382c1ac89b1Seric /* be sure we are immune from the terminal */ 3837880f3e4Seric disconnect(1, e); 384c1ac89b1Seric 385c1ac89b1Seric # ifdef LOCKF 386c1ac89b1Seric /* 387c1ac89b1Seric ** Now try to get our lock back. 388c1ac89b1Seric */ 389c1ac89b1Seric 390c1ac89b1Seric lfd.l_type = F_WRLCK; 391c1ac89b1Seric lfd.l_whence = lfd.l_start = lfd.l_len = 0; 392c1ac89b1Seric e->e_lockfp = fopen(queuename(e, 'q'), "r+"); 393c1ac89b1Seric if (e->e_lockfp == NULL || 394c1ac89b1Seric fcntl(fileno(e->e_lockfp), F_SETLK, &lfd) < 0) 395c1ac89b1Seric { 396c1ac89b1Seric /* oops.... lost it */ 397c1ac89b1Seric if (tTd(13, 1)) 398c1ac89b1Seric printf("sendenvelope: %s lost lock: lockfp=%x, %s\n", 399c1ac89b1Seric e->e_id, e->e_lockfp, errstring(errno)); 400c1ac89b1Seric 401c1ac89b1Seric # ifdef LOG 402c1ac89b1Seric if (LogLevel > 29) 403c1ac89b1Seric syslog(LOG_NOTICE, "%s: lost lock: %m", 404c1ac89b1Seric e->e_id); 405c1ac89b1Seric # endif /* LOG */ 406c1ac89b1Seric exit(EX_OK); 407c1ac89b1Seric } 408c1ac89b1Seric # endif /* LOCKF */ 409c1ac89b1Seric 410c1ac89b1Seric /* 411c1ac89b1Seric ** Close any cached connections. 412c1ac89b1Seric ** 413c1ac89b1Seric ** We don't send the QUIT protocol because the parent 414c1ac89b1Seric ** still knows about the connection. 415c1ac89b1Seric ** 416c1ac89b1Seric ** This should only happen when delivering an error 417c1ac89b1Seric ** message. 418c1ac89b1Seric */ 419c1ac89b1Seric 420c1ac89b1Seric mci_flush(FALSE, NULL); 421c1ac89b1Seric 422c1ac89b1Seric break; 423c1ac89b1Seric } 424c1ac89b1Seric 425c1ac89b1Seric /* 4269c9e68d9Seric ** Run through the list and send everything. 427*5288e21aSeric ** 428*5288e21aSeric ** Set EF_GLOBALERRS so that error messages during delivery 429*5288e21aSeric ** result in returned mail. 4309c9e68d9Seric */ 4319c9e68d9Seric 4329c9e68d9Seric e->e_nsent = 0; 433*5288e21aSeric e->e_flags |= EF_GLOBALERRS; 4349c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4359c9e68d9Seric { 4369c9e68d9Seric if (mode == SM_VERIFY) 4379c9e68d9Seric { 4389c9e68d9Seric e->e_to = q->q_paddr; 4399c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4408dfca105Seric { 4418dfca105Seric message("deliverable: mailer %s, host %s, user %s", 4428dfca105Seric q->q_mailer->m_name, 4438dfca105Seric q->q_host, 4448dfca105Seric q->q_user); 4458dfca105Seric } 4469c9e68d9Seric } 4479c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4489c9e68d9Seric { 4499c9e68d9Seric # ifdef QUEUE 4509c9e68d9Seric /* 4519c9e68d9Seric ** Checkpoint the send list every few addresses 4529c9e68d9Seric */ 4539c9e68d9Seric 4549c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4559c9e68d9Seric { 4569c9e68d9Seric queueup(e, TRUE, FALSE); 4579c9e68d9Seric e->e_nsent = 0; 4589c9e68d9Seric } 4599c9e68d9Seric # endif /* QUEUE */ 4609c9e68d9Seric (void) deliver(e, q); 4619c9e68d9Seric } 4629c9e68d9Seric } 4639c9e68d9Seric Verbose = oldverbose; 4649c9e68d9Seric 4659c9e68d9Seric if (mode == SM_FORK) 4669c9e68d9Seric finis(); 4679c9e68d9Seric } 4689c9e68d9Seric /* 4699c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4709c9e68d9Seric ** 4719c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4729c9e68d9Seric ** two processes on the same stack!!! 4739c9e68d9Seric ** 4749c9e68d9Seric ** Parameters: 4759c9e68d9Seric ** none. 4769c9e68d9Seric ** 4779c9e68d9Seric ** Returns: 4789c9e68d9Seric ** From a macro??? You've got to be kidding! 4799c9e68d9Seric ** 4809c9e68d9Seric ** Side Effects: 4819c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4829c9e68d9Seric ** pid of child in parent, zero in child. 4839c9e68d9Seric ** -1 on unrecoverable error. 4849c9e68d9Seric ** 4859c9e68d9Seric ** Notes: 4869c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4879c9e68d9Seric ** vfork for you..... 4889c9e68d9Seric */ 4899c9e68d9Seric 4909c9e68d9Seric # define NFORKTRIES 5 4919c9e68d9Seric 4929c9e68d9Seric # ifndef FORK 4939c9e68d9Seric # define FORK fork 4949c9e68d9Seric # endif 4959c9e68d9Seric 4969c9e68d9Seric # define DOFORK(fORKfN) \ 4979c9e68d9Seric {\ 4989c9e68d9Seric register int i;\ 4999c9e68d9Seric \ 5009c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 5019c9e68d9Seric {\ 5029c9e68d9Seric pid = fORKfN();\ 5039c9e68d9Seric if (pid >= 0)\ 5049c9e68d9Seric break;\ 5059c9e68d9Seric if (i > 0)\ 5069c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 5079c9e68d9Seric }\ 5089c9e68d9Seric } 5099c9e68d9Seric /* 5109c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 5119c9e68d9Seric ** 5129c9e68d9Seric ** Parameters: 5139c9e68d9Seric ** none. 5149c9e68d9Seric ** 5159c9e68d9Seric ** Returns: 5169c9e68d9Seric ** pid of child in parent. 5179c9e68d9Seric ** zero in child. 5189c9e68d9Seric ** -1 on error. 5199c9e68d9Seric ** 5209c9e68d9Seric ** Side Effects: 5219c9e68d9Seric ** returns twice, once in parent and once in child. 5229c9e68d9Seric */ 5239c9e68d9Seric 5249c9e68d9Seric dofork() 5259c9e68d9Seric { 5269c9e68d9Seric register int pid; 5279c9e68d9Seric 5289c9e68d9Seric DOFORK(fork); 5299c9e68d9Seric return (pid); 5309c9e68d9Seric } 5319c9e68d9Seric /* 53213bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 53313bbc08cSeric ** 53413bbc08cSeric ** This routine delivers to everyone on the same host as the 53513bbc08cSeric ** user on the head of the list. It is clever about mailers 53613bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 53713bbc08cSeric ** that it will deliver to all these addresses however -- so 53813bbc08cSeric ** deliver should be called once for each address on the 53913bbc08cSeric ** list. 54025a99e2eSeric ** 54125a99e2eSeric ** Parameters: 542588cad61Seric ** e -- the envelope to deliver. 543c77d1c25Seric ** firstto -- head of the address list to deliver to. 54425a99e2eSeric ** 54525a99e2eSeric ** Returns: 54625a99e2eSeric ** zero -- successfully delivered. 54725a99e2eSeric ** else -- some failure, see ExitStat for more info. 54825a99e2eSeric ** 54925a99e2eSeric ** Side Effects: 55025a99e2eSeric ** The standard input is passed off to someone. 55125a99e2eSeric */ 55225a99e2eSeric 553588cad61Seric deliver(e, firstto) 554588cad61Seric register ENVELOPE *e; 555c77d1c25Seric ADDRESS *firstto; 55625a99e2eSeric { 55778442df3Seric char *host; /* host being sent to */ 55878442df3Seric char *user; /* user being sent to */ 55925a99e2eSeric char **pvp; 5605dfc646bSeric register char **mvp; 56125a99e2eSeric register char *p; 562588cad61Seric register MAILER *m; /* mailer for this recipient */ 5636259796dSeric ADDRESS *ctladdr; 564b31e7f2bSeric register MCI *mci; 565c77d1c25Seric register ADDRESS *to = firstto; 566c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 567772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 568911693bfSbostic int rcode; /* response code */ 569e103b48fSeric char *firstsig; /* signature of firstto */ 5709c9e68d9Seric int pid; 5719c9e68d9Seric char *curhost; 5729c9e68d9Seric int mpvect[2]; 5739c9e68d9Seric int rpvect[2]; 574ee6bf8dfSeric char *pv[MAXPV+1]; 575579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 576ee6bf8dfSeric char buf[MAXNAME]; 577c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 578fabb3bd4Seric extern int checkcompat(); 5799c9e68d9Seric extern FILE *fdopen(); 58025a99e2eSeric 58135490626Seric errno = 0; 582ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5835dfc646bSeric return (0); 58425a99e2eSeric 585134746fbSeric #ifdef NAMED_BIND 586912a731aSbostic /* unless interactive, try twice, over a minute */ 587912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 588912a731aSbostic _res.retrans = 30; 589912a731aSbostic _res.retry = 2; 590912a731aSbostic } 591d4bd8f0eSbostic #endif 592912a731aSbostic 59351552439Seric m = to->q_mailer; 59451552439Seric host = to->q_host; 595c9be6216Seric CurEnv = e; /* just in case */ 5964384d521Seric e->e_statmsg = NULL; 59751552439Seric 5986ef48975Seric if (tTd(10, 1)) 5995dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 60051552439Seric m->m_mno, host, to->q_user); 601f3dbc832Seric 602f3dbc832Seric /* 603f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 604f3dbc832Seric ** connections now, just mark these addresses and return. 605f3dbc832Seric ** This is useful if we want to batch connections to 606f3dbc832Seric ** reduce load. This will cause the messages to be 607f3dbc832Seric ** queued up, and a daemon will come along to send the 608f3dbc832Seric ** messages later. 609f3dbc832Seric ** This should be on a per-mailer basis. 610f3dbc832Seric */ 611f3dbc832Seric 61219c47125Seric if (NoConnect && !bitset(EF_QUEUERUN, e->e_flags) && 61319c47125Seric bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 614f3dbc832Seric { 615f3dbc832Seric for (; to != NULL; to = to->q_next) 616f4560e80Seric { 617ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 618c6e18ac5Seric to->q_mailer != m) 619f4560e80Seric continue; 620268a25e1Seric to->q_flags |= QQUEUEUP; 621588cad61Seric e->e_to = to->q_paddr; 62208b25121Seric message("queued"); 6232f624c86Seric if (LogLevel > 8) 62481161401Seric logdelivery(m, NULL, "queued", e); 625f4560e80Seric } 626588cad61Seric e->e_to = NULL; 627f3dbc832Seric return (0); 628f3dbc832Seric } 629f3dbc832Seric 63025a99e2eSeric /* 6315dfc646bSeric ** Do initial argv setup. 6325dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6335dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6345dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6355dfc646bSeric ** code does not check for 'pv' overflow; this places a 6365dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6373bea8136Seric ** The from address rewrite is expected to make 6383bea8136Seric ** the address relative to the other end. 6395dfc646bSeric */ 6405dfc646bSeric 64178442df3Seric /* rewrite from address, using rewriting rules */ 642efe54562Seric rcode = EX_OK; 643efe54562Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, 644efe54562Seric RF_SENDERADDR|RF_CANONICAL, 645efe54562Seric &rcode, e)); 646ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 647588cad61Seric define('h', host, e); /* to host */ 6485dfc646bSeric Errors = 0; 6495dfc646bSeric pvp = pv; 6505dfc646bSeric *pvp++ = m->m_argv[0]; 6515dfc646bSeric 6525dfc646bSeric /* insert -f or -r flag as appropriate */ 65357fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6545dfc646bSeric { 65557fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6565dfc646bSeric *pvp++ = "-f"; 6575dfc646bSeric else 6585dfc646bSeric *pvp++ = "-r"; 659c23ed322Seric *pvp++ = newstr(rpathbuf); 6605dfc646bSeric } 6615dfc646bSeric 6625dfc646bSeric /* 6635dfc646bSeric ** Append the other fixed parts of the argv. These run 6645dfc646bSeric ** up to the first entry containing "$u". There can only 6655dfc646bSeric ** be one of these, and there are only a few more slots 6665dfc646bSeric ** in the pv after it. 6675dfc646bSeric */ 6685dfc646bSeric 6695dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6705dfc646bSeric { 6712bc47524Seric /* can't use strchr here because of sign extension problems */ 6722bc47524Seric while (*p != '\0') 6732bc47524Seric { 6742bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6752bc47524Seric { 6762bc47524Seric if (*p == 'u') 6775dfc646bSeric break; 6782bc47524Seric } 6792bc47524Seric } 6802bc47524Seric 6812bc47524Seric if (*p != '\0') 6825dfc646bSeric break; 6835dfc646bSeric 6845dfc646bSeric /* this entry is safe -- go ahead and process it */ 685588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6865dfc646bSeric *pvp++ = newstr(buf); 6875dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6885dfc646bSeric { 68908b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6905dfc646bSeric return (-1); 6915dfc646bSeric } 6925dfc646bSeric } 693c579ef51Seric 69433db8731Seric /* 69533db8731Seric ** If we have no substitution for the user name in the argument 69633db8731Seric ** list, we know that we must supply the names otherwise -- and 69733db8731Seric ** SMTP is the answer!! 69833db8731Seric */ 69933db8731Seric 7005dfc646bSeric if (*mvp == NULL) 701c579ef51Seric { 702c579ef51Seric /* running SMTP */ 7032c7e1b8dSeric # ifdef SMTP 704c579ef51Seric clever = TRUE; 705c579ef51Seric *pvp = NULL; 7066c2c3107Seric # else /* SMTP */ 70733db8731Seric /* oops! we don't implement SMTP */ 70808b25121Seric syserr("554 SMTP style mailer"); 7092c7e1b8dSeric return (EX_SOFTWARE); 7106c2c3107Seric # endif /* SMTP */ 711c579ef51Seric } 7125dfc646bSeric 7135dfc646bSeric /* 7145dfc646bSeric ** At this point *mvp points to the argument with $u. We 7155dfc646bSeric ** run through our address list and append all the addresses 7165dfc646bSeric ** we can. If we run out of space, do not fret! We can 7175dfc646bSeric ** always send another copy later. 7185dfc646bSeric */ 7195dfc646bSeric 7205dfc646bSeric tobuf[0] = '\0'; 721588cad61Seric e->e_to = tobuf; 7226259796dSeric ctladdr = NULL; 723e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7245dfc646bSeric for (; to != NULL; to = to->q_next) 7255dfc646bSeric { 7265dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 72757fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7285dfc646bSeric break; 7295dfc646bSeric 7305dfc646bSeric /* if already sent or not for this host, don't send */ 731ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 732e103b48fSeric to->q_mailer != firstto->q_mailer || 733e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7345dfc646bSeric continue; 7356259796dSeric 7364b22ea87Seric /* avoid overflowing tobuf */ 737aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7384b22ea87Seric break; 7394b22ea87Seric 7406ef48975Seric if (tTd(10, 1)) 741772e6e50Seric { 742772e6e50Seric printf("\nsend to "); 743772e6e50Seric printaddr(to, FALSE); 744772e6e50Seric } 745772e6e50Seric 7466259796dSeric /* compute effective uid/gid when sending */ 7477da1035fSeric if (to->q_mailer == ProgMailer) 7486259796dSeric ctladdr = getctladdr(to); 7496259796dSeric 7505dfc646bSeric user = to->q_user; 751588cad61Seric e->e_to = to->q_paddr; 75275f1ade9Seric if (tTd(10, 5)) 75375f1ade9Seric { 75475f1ade9Seric printf("deliver: QDONTSEND "); 75575f1ade9Seric printaddr(to, FALSE); 75675f1ade9Seric } 757ee4b0922Seric to->q_flags |= QDONTSEND; 7585dfc646bSeric 7595dfc646bSeric /* 7605dfc646bSeric ** Check to see that these people are allowed to 7615dfc646bSeric ** talk to each other. 7622a6e0786Seric */ 7632a6e0786Seric 76469582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 76569582d2fSeric { 76669582d2fSeric NoReturn = TRUE; 76708b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 76881161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 76969582d2fSeric continue; 77069582d2fSeric } 771fabb3bd4Seric rcode = checkcompat(to, e); 7721793c9c5Seric if (rcode != EX_OK) 7735dfc646bSeric { 7741000c37aSeric markfailure(e, to, rcode); 77581161401Seric giveresponse(rcode, m, NULL, e); 7765dfc646bSeric continue; 7775dfc646bSeric } 7782a6e0786Seric 7792a6e0786Seric /* 7809ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7819ec9501bSeric ** about them. 78225a99e2eSeric */ 78325a99e2eSeric 78457fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 78525a99e2eSeric { 7861d8f1806Seric stripquotes(user); 7871d8f1806Seric stripquotes(host); 78825a99e2eSeric } 78925a99e2eSeric 790cdb828c5Seric /* hack attack -- delivermail compatibility */ 791cdb828c5Seric if (m == ProgMailer && *user == '|') 792cdb828c5Seric user++; 793cdb828c5Seric 79425a99e2eSeric /* 7953efaed6eSeric ** If an error message has already been given, don't 7963efaed6eSeric ** bother to send to this address. 7973efaed6eSeric ** 7983efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7993efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 8003efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 8013efaed6eSeric */ 8023efaed6eSeric 8036cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 8043efaed6eSeric continue; 8053efaed6eSeric 806f2fec898Seric /* save statistics.... */ 807588cad61Seric markstats(e, to); 808f2fec898Seric 8093efaed6eSeric /* 81025a99e2eSeric ** See if this user name is "special". 81125a99e2eSeric ** If the user name has a slash in it, assume that this 81251552439Seric ** is a file -- send it off without further ado. Note 81351552439Seric ** that this type of addresses is not processed along 81451552439Seric ** with the others, so we fudge on the To person. 81525a99e2eSeric */ 81625a99e2eSeric 8172c017f8dSeric if (m == FileMailer) 81825a99e2eSeric { 819b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 82081161401Seric giveresponse(rcode, m, NULL, e); 821dde5acadSeric if (rcode == EX_OK) 822dde5acadSeric to->q_flags |= QSENT; 8235dfc646bSeric continue; 82425a99e2eSeric } 82525a99e2eSeric 82613bbc08cSeric /* 82713bbc08cSeric ** Address is verified -- add this user to mailer 82813bbc08cSeric ** argv, and add it to the print list of recipients. 82913bbc08cSeric */ 83013bbc08cSeric 831508daeccSeric /* link together the chain of recipients */ 832508daeccSeric to->q_tchain = tochain; 833508daeccSeric tochain = to; 834508daeccSeric 8355dfc646bSeric /* create list of users for error messages */ 836db8841e9Seric (void) strcat(tobuf, ","); 837db8841e9Seric (void) strcat(tobuf, to->q_paddr); 838588cad61Seric define('u', user, e); /* to user */ 839588cad61Seric define('z', to->q_home, e); /* user's home */ 8405dfc646bSeric 841c579ef51Seric /* 842508daeccSeric ** Expand out this user into argument list. 843c579ef51Seric */ 844c579ef51Seric 845508daeccSeric if (!clever) 846c579ef51Seric { 847588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8485dfc646bSeric *pvp++ = newstr(buf); 8495dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8505dfc646bSeric { 8515dfc646bSeric /* allow some space for trailing parms */ 8525dfc646bSeric break; 8535dfc646bSeric } 8545dfc646bSeric } 855c579ef51Seric } 8565dfc646bSeric 857145b49b1Seric /* see if any addresses still exist */ 858145b49b1Seric if (tobuf[0] == '\0') 859c579ef51Seric { 860588cad61Seric define('g', (char *) NULL, e); 861145b49b1Seric return (0); 862c579ef51Seric } 863145b49b1Seric 8645dfc646bSeric /* print out messages as full list */ 86563780dbdSeric e->e_to = tobuf + 1; 8665dfc646bSeric 8675dfc646bSeric /* 8685dfc646bSeric ** Fill out any parameters after the $u parameter. 8695dfc646bSeric */ 8705dfc646bSeric 871c579ef51Seric while (!clever && *++mvp != NULL) 8725dfc646bSeric { 873588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8745dfc646bSeric *pvp++ = newstr(buf); 8755dfc646bSeric if (pvp >= &pv[MAXPV]) 87608b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8775dfc646bSeric } 8785dfc646bSeric *pvp++ = NULL; 8795dfc646bSeric 88025a99e2eSeric /* 88125a99e2eSeric ** Call the mailer. 8826328bdf7Seric ** The argument vector gets built, pipes 88325a99e2eSeric ** are created as necessary, and we fork & exec as 8846328bdf7Seric ** appropriate. 885c579ef51Seric ** If we are running SMTP, we just need to clean up. 88625a99e2eSeric */ 88725a99e2eSeric 8887ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 88986b26461Seric ctladdr = &e->e_from; 890134746fbSeric #ifdef NAMED_BIND 8912bcc6d2dSeric if (ConfigLevel < 2) 892912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 893134746fbSeric #endif 8949c9e68d9Seric 8959c9e68d9Seric if (tTd(11, 1)) 896134746fbSeric { 8979c9e68d9Seric printf("openmailer:"); 8989c9e68d9Seric printav(pv); 8999c9e68d9Seric } 9009c9e68d9Seric errno = 0; 9019c9e68d9Seric 9029c9e68d9Seric CurHostName = m->m_mailer; 9039c9e68d9Seric 9049c9e68d9Seric /* 9059c9e68d9Seric ** Deal with the special case of mail handled through an IPC 9069c9e68d9Seric ** connection. 9079c9e68d9Seric ** In this case we don't actually fork. We must be 9089c9e68d9Seric ** running SMTP for this to work. We will return a 9099c9e68d9Seric ** zero pid to indicate that we are running IPC. 9109c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 9119c9e68d9Seric */ 9129c9e68d9Seric 9139c9e68d9Seric curhost = NULL; 9149c9e68d9Seric 9159c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9169c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9179c9e68d9Seric { 9189c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9199c9e68d9Seric bzero((char *) mci, sizeof *mci); 9209c9e68d9Seric mci->mci_in = stdin; 9219c9e68d9Seric mci->mci_out = stdout; 9229c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9239c9e68d9Seric mci->mci_mailer = m; 9249c9e68d9Seric } 9259c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9269c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9279c9e68d9Seric { 9289c9e68d9Seric #ifdef DAEMON 9299c9e68d9Seric register int i; 9309c9e68d9Seric register u_short port; 9319c9e68d9Seric 9329c9e68d9Seric CurHostName = pv[1]; 9339c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9349c9e68d9Seric 9359c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9369c9e68d9Seric { 9379c9e68d9Seric syserr("null signature"); 938845e533cSeric rcode = EX_OSERR; 939b31e7f2bSeric goto give_up; 940b31e7f2bSeric } 9419c9e68d9Seric 9429c9e68d9Seric if (!clever) 9439c9e68d9Seric { 9449c9e68d9Seric syserr("554 non-clever IPC"); 9459c9e68d9Seric rcode = EX_OSERR; 9469c9e68d9Seric goto give_up; 9479c9e68d9Seric } 9489c9e68d9Seric if (pv[2] != NULL) 9499c9e68d9Seric port = atoi(pv[2]); 9509c9e68d9Seric else 9519c9e68d9Seric port = 0; 9529c9e68d9Seric tryhost: 9539c9e68d9Seric mci = NULL; 9549c9e68d9Seric while (*curhost != '\0') 9559c9e68d9Seric { 9569c9e68d9Seric register char *p; 9579c9e68d9Seric static char hostbuf[MAXNAME]; 9589c9e68d9Seric 9599c9e68d9Seric mci = NULL; 9609c9e68d9Seric 9619c9e68d9Seric /* pull the next host from the signature */ 9629c9e68d9Seric p = strchr(curhost, ':'); 9639c9e68d9Seric if (p == NULL) 9649c9e68d9Seric p = &curhost[strlen(curhost)]; 9659c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9669c9e68d9Seric hostbuf[p - curhost] = '\0'; 9679c9e68d9Seric if (*p != '\0') 9689c9e68d9Seric p++; 9699c9e68d9Seric curhost = p; 9709c9e68d9Seric 9719c9e68d9Seric /* see if we already know that this host is fried */ 9729c9e68d9Seric CurHostName = hostbuf; 9739c9e68d9Seric mci = mci_get(hostbuf, m); 9749c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9759c9e68d9Seric { 9769c9e68d9Seric if (tTd(11, 1)) 9779c9e68d9Seric { 9789c9e68d9Seric printf("openmailer: "); 9799c9e68d9Seric mci_dump(mci); 9809c9e68d9Seric } 9819c9e68d9Seric CurHostName = mci->mci_host; 9829c9e68d9Seric break; 9839c9e68d9Seric } 9849c9e68d9Seric mci->mci_mailer = m; 9859c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9869c9e68d9Seric continue; 9879c9e68d9Seric 9889c9e68d9Seric /* try the connection */ 9899c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9909c9e68d9Seric message("Connecting to %s (%s)...", 9919c9e68d9Seric hostbuf, m->m_name); 9929c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9939c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9949c9e68d9Seric mci->mci_exitstat = i; 9959c9e68d9Seric mci->mci_errno = errno; 996f170942cSeric #ifdef NAMED_BIND 997f170942cSeric mci->mci_herrno = h_errno; 998f170942cSeric #endif 9999c9e68d9Seric if (i == EX_OK) 10009c9e68d9Seric { 10019c9e68d9Seric mci->mci_state = MCIS_OPENING; 10029c9e68d9Seric mci_cache(mci); 1003f170942cSeric if (TrafficLogFile != NULL) 1004f170942cSeric fprintf(TrafficLogFile, "%05d == CONNECT %s\n", 1005f170942cSeric getpid(), hostbuf); 10069c9e68d9Seric break; 10079c9e68d9Seric } 10089c9e68d9Seric else if (tTd(11, 1)) 10099c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 10109c9e68d9Seric i, errno); 10119c9e68d9Seric 10129c9e68d9Seric 10139c9e68d9Seric /* enter status of this host */ 10149c9e68d9Seric setstat(i); 10159c9e68d9Seric } 10169c9e68d9Seric mci->mci_pid = 0; 10179c9e68d9Seric #else /* no DAEMON */ 10189c9e68d9Seric syserr("554 openmailer: no IPC"); 10199c9e68d9Seric if (tTd(11, 1)) 10209c9e68d9Seric printf("openmailer: NULL\n"); 10219c9e68d9Seric return NULL; 10229c9e68d9Seric #endif /* DAEMON */ 10239c9e68d9Seric } 10249c9e68d9Seric else 10259c9e68d9Seric { 1026f170942cSeric #ifdef XDEBUG 1027f170942cSeric char wbuf[MAXLINE]; 10286fe8c3bcSeric 10296fe8c3bcSeric /* make absolutely certain 0, 1, and 2 are in use */ 1030f170942cSeric sprintf(wbuf, "%s... openmailer(%s)", e->e_to, m->m_name); 1031f170942cSeric checkfd012(wbuf); 1032f170942cSeric #endif 10330e3bfef5Seric 1034f170942cSeric if (TrafficLogFile != NULL) 10350e3bfef5Seric { 1036f170942cSeric char **av; 1037f170942cSeric 1038f170942cSeric fprintf(TrafficLogFile, "%05d === EXEC", getpid()); 1039f170942cSeric for (av = pv; *av != NULL; av++) 1040f170942cSeric fprintf(TrafficLogFile, " %s", *av); 1041f170942cSeric fprintf(TrafficLogFile, "\n"); 10426fe8c3bcSeric } 10436fe8c3bcSeric 10449c9e68d9Seric /* create a pipe to shove the mail through */ 10459c9e68d9Seric if (pipe(mpvect) < 0) 10469c9e68d9Seric { 10470e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10480e3bfef5Seric e->e_to, m->m_name); 10499c9e68d9Seric if (tTd(11, 1)) 10509c9e68d9Seric printf("openmailer: NULL\n"); 10519c9e68d9Seric rcode = EX_OSERR; 10529c9e68d9Seric goto give_up; 10539c9e68d9Seric } 10549c9e68d9Seric 10559c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10569c9e68d9Seric if (clever && pipe(rpvect) < 0) 10579c9e68d9Seric { 10580e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10590e3bfef5Seric e->e_to, m->m_name); 10609c9e68d9Seric (void) close(mpvect[0]); 10619c9e68d9Seric (void) close(mpvect[1]); 10629c9e68d9Seric if (tTd(11, 1)) 10639c9e68d9Seric printf("openmailer: NULL\n"); 10649c9e68d9Seric rcode = EX_OSERR; 10659c9e68d9Seric goto give_up; 10669c9e68d9Seric } 10679c9e68d9Seric 10689c9e68d9Seric /* 10699c9e68d9Seric ** Actually fork the mailer process. 10709c9e68d9Seric ** DOFORK is clever about retrying. 10719c9e68d9Seric ** 10729c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10739c9e68d9Seric ** around so that endmail will get it. 10749c9e68d9Seric */ 10759c9e68d9Seric 10769c9e68d9Seric if (e->e_xfp != NULL) 10779c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10789c9e68d9Seric (void) fflush(stdout); 10799c9e68d9Seric # ifdef SIGCHLD 10809c9e68d9Seric (void) signal(SIGCHLD, SIG_DFL); 10819c9e68d9Seric # endif /* SIGCHLD */ 10829c9e68d9Seric DOFORK(FORK); 10839c9e68d9Seric /* pid is set by DOFORK */ 10849c9e68d9Seric if (pid < 0) 10859c9e68d9Seric { 10869c9e68d9Seric /* failure */ 10870e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10880e3bfef5Seric e->e_to, m->m_name); 10899c9e68d9Seric (void) close(mpvect[0]); 10909c9e68d9Seric (void) close(mpvect[1]); 10919c9e68d9Seric if (clever) 10929c9e68d9Seric { 10939c9e68d9Seric (void) close(rpvect[0]); 10949c9e68d9Seric (void) close(rpvect[1]); 10959c9e68d9Seric } 10969c9e68d9Seric if (tTd(11, 1)) 10979c9e68d9Seric printf("openmailer: NULL\n"); 10989c9e68d9Seric rcode = EX_OSERR; 10999c9e68d9Seric goto give_up; 11009c9e68d9Seric } 11019c9e68d9Seric else if (pid == 0) 11029c9e68d9Seric { 11039c9e68d9Seric int i; 11049c9e68d9Seric int saveerrno; 11059c9e68d9Seric char **ep; 11069c9e68d9Seric char *env[MAXUSERENVIRON]; 11079c9e68d9Seric extern char **environ; 11089c9e68d9Seric extern int DtableSize; 11099c9e68d9Seric 11109c9e68d9Seric /* child -- set up input & exec mailer */ 11119c9e68d9Seric /* make diagnostic output be standard output */ 11129c9e68d9Seric (void) signal(SIGINT, SIG_IGN); 11139c9e68d9Seric (void) signal(SIGHUP, SIG_IGN); 11149c9e68d9Seric (void) signal(SIGTERM, SIG_DFL); 11159c9e68d9Seric 11169c9e68d9Seric /* close any other cached connections */ 11179c9e68d9Seric mci_flush(FALSE, mci); 11189c9e68d9Seric 1119b986f6aaSeric /* move into some "safe" directory */ 1120b986f6aaSeric if (m->m_execdir != NULL) 1121b986f6aaSeric { 1122b986f6aaSeric char *p, *q; 1123b986f6aaSeric char buf[MAXLINE]; 1124b986f6aaSeric 1125b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1126b986f6aaSeric { 1127b986f6aaSeric q = strchr(p, ':'); 1128b986f6aaSeric if (q != NULL) 1129b986f6aaSeric *q = '\0'; 1130b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1131b986f6aaSeric if (q != NULL) 1132b986f6aaSeric *q++ = ':'; 1133b986f6aaSeric if (tTd(11, 20)) 1134b986f6aaSeric printf("openmailer: trydir %s\n", 1135b986f6aaSeric buf); 1136b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1137b986f6aaSeric break; 1138b986f6aaSeric } 1139b986f6aaSeric } 1140b986f6aaSeric 11419c9e68d9Seric /* arrange to filter std & diag output of command */ 11429c9e68d9Seric if (clever) 11439c9e68d9Seric { 11449c9e68d9Seric (void) close(rpvect[0]); 11456fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11466fe8c3bcSeric { 11470e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11480e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11496fe8c3bcSeric _exit(EX_OSERR); 11506fe8c3bcSeric } 11519c9e68d9Seric (void) close(rpvect[1]); 11529c9e68d9Seric } 11539c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11549c9e68d9Seric { 11559c9e68d9Seric /* put mailer output in transcript */ 11566fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11576fe8c3bcSeric { 11580e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11590e3bfef5Seric e->e_to, m->m_name, 11606fe8c3bcSeric fileno(e->e_xfp)); 11616fe8c3bcSeric _exit(EX_OSERR); 11629c9e68d9Seric } 11636fe8c3bcSeric } 11646fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11656fe8c3bcSeric { 11660e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11670e3bfef5Seric e->e_to, m->m_name); 11686fe8c3bcSeric _exit(EX_OSERR); 11696fe8c3bcSeric } 11709c9e68d9Seric 11719c9e68d9Seric /* arrange to get standard input */ 11729c9e68d9Seric (void) close(mpvect[1]); 11739c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11749c9e68d9Seric { 11750e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 11760e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 11779c9e68d9Seric _exit(EX_OSERR); 11789c9e68d9Seric } 11799c9e68d9Seric (void) close(mpvect[0]); 11809c9e68d9Seric if (!bitnset(M_RESTR, m->m_flags)) 11819c9e68d9Seric { 11829c9e68d9Seric if (ctladdr == NULL || ctladdr->q_uid == 0) 11839c9e68d9Seric { 11849c9e68d9Seric (void) setgid(DefGid); 11859c9e68d9Seric (void) initgroups(DefUser, DefGid); 11869c9e68d9Seric (void) setuid(DefUid); 11879c9e68d9Seric } 11889c9e68d9Seric else 11899c9e68d9Seric { 11909c9e68d9Seric (void) setgid(ctladdr->q_gid); 11919c9e68d9Seric (void) initgroups(ctladdr->q_ruser? 11929c9e68d9Seric ctladdr->q_ruser: ctladdr->q_user, 11939c9e68d9Seric ctladdr->q_gid); 11949c9e68d9Seric (void) setuid(ctladdr->q_uid); 11959c9e68d9Seric } 11969c9e68d9Seric } 11979c9e68d9Seric 11989c9e68d9Seric /* arrange for all the files to be closed */ 11999c9e68d9Seric for (i = 3; i < DtableSize; i++) 12009c9e68d9Seric { 12019c9e68d9Seric register int j; 12029c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 12039c9e68d9Seric (void)fcntl(i, F_SETFD, j|1); 12049c9e68d9Seric } 12059c9e68d9Seric 12069c9e68d9Seric /* set up the mailer environment */ 12079c9e68d9Seric i = 0; 12089c9e68d9Seric env[i++] = "AGENT=sendmail"; 12099c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 12109c9e68d9Seric { 12119c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12129c9e68d9Seric env[i++] = *ep; 12139c9e68d9Seric } 12149c9e68d9Seric env[i++] = NULL; 12159c9e68d9Seric 12169c9e68d9Seric /* try to execute the mailer */ 12179c9e68d9Seric execve(m->m_mailer, pv, env); 12189c9e68d9Seric saveerrno = errno; 12199c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12207c941fd2Seric if (m == LocalMailer || transienterror(saveerrno)) 12217c941fd2Seric _exit(EX_OSERR); 12229c9e68d9Seric _exit(EX_UNAVAILABLE); 12239c9e68d9Seric } 12249c9e68d9Seric 12259c9e68d9Seric /* 12269c9e68d9Seric ** Set up return value. 12279c9e68d9Seric */ 12289c9e68d9Seric 12299c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12309c9e68d9Seric bzero((char *) mci, sizeof *mci); 12319c9e68d9Seric mci->mci_mailer = m; 12329c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12339c9e68d9Seric mci->mci_pid = pid; 12349c9e68d9Seric (void) close(mpvect[0]); 12359c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12369c9e68d9Seric if (clever) 12379c9e68d9Seric { 12389c9e68d9Seric (void) close(rpvect[1]); 12399c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12409c9e68d9Seric } 12419c9e68d9Seric else 12429c9e68d9Seric { 12439c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12449c9e68d9Seric mci->mci_in = NULL; 12459c9e68d9Seric } 12469c9e68d9Seric } 12479c9e68d9Seric 12489c9e68d9Seric /* 12499c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12509c9e68d9Seric */ 12519c9e68d9Seric 12529c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12539c9e68d9Seric { 12549c9e68d9Seric smtpinit(m, mci, e); 12559c9e68d9Seric } 12569c9e68d9Seric if (tTd(11, 1)) 12579c9e68d9Seric { 12589c9e68d9Seric printf("openmailer: "); 12599c9e68d9Seric mci_dump(mci); 12609c9e68d9Seric } 12619c9e68d9Seric 12629c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1263b31e7f2bSeric { 1264b31e7f2bSeric /* couldn't open the mailer */ 1265b31e7f2bSeric rcode = mci->mci_exitstat; 12662a6bc25bSeric errno = mci->mci_errno; 1267f170942cSeric #ifdef NAMED_BIND 1268f170942cSeric h_errno = mci->mci_herrno; 1269f170942cSeric #endif 1270b31e7f2bSeric if (rcode == EX_OK) 1271b31e7f2bSeric { 1272b31e7f2bSeric /* shouldn't happen */ 127308b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12746b0f339dSeric rcode, mci->mci_state, firstsig); 1275b31e7f2bSeric rcode = EX_SOFTWARE; 1276b31e7f2bSeric } 1277e9277e33Seric else if (rcode == EX_TEMPFAIL && *curhost != '\0') 127890891494Seric { 127990891494Seric /* try next MX site */ 128090891494Seric goto tryhost; 128190891494Seric } 1282b31e7f2bSeric } 1283b31e7f2bSeric else if (!clever) 1284b31e7f2bSeric { 1285b31e7f2bSeric /* 1286b31e7f2bSeric ** Format and send message. 1287b31e7f2bSeric */ 128815d084d5Seric 1289b31e7f2bSeric putfromline(mci->mci_out, m, e); 1290b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1291b31e7f2bSeric putline("\n", mci->mci_out, m); 129203c02fdeSeric (*e->e_putbody)(mci->mci_out, m, e, NULL); 1293b31e7f2bSeric 1294b31e7f2bSeric /* get the exit status */ 1295c9be6216Seric rcode = endmailer(mci, e, pv); 1296134746fbSeric } 1297134746fbSeric else 1298b31e7f2bSeric #ifdef SMTP 1299134746fbSeric { 1300b31e7f2bSeric /* 1301b31e7f2bSeric ** Send the MAIL FROM: protocol 1302b31e7f2bSeric */ 130315d084d5Seric 1304b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1305b31e7f2bSeric if (rcode == EX_OK) 130675889e88Seric { 1307ded0d3daSkarels register char *t = tobuf; 1308ded0d3daSkarels register int i; 1309ded0d3daSkarels 1310588cad61Seric /* send the recipient list */ 131163780dbdSeric tobuf[0] = '\0'; 131275889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 131375889e88Seric { 131463780dbdSeric e->e_to = to->q_paddr; 131515d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 131675889e88Seric { 131783b7ddc9Seric markfailure(e, to, i); 131881161401Seric giveresponse(i, m, mci, e); 131963780dbdSeric } 132075889e88Seric else 132175889e88Seric { 1322911693bfSbostic *t++ = ','; 1323b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1324b31e7f2bSeric continue; 1325588cad61Seric } 1326588cad61Seric } 1327588cad61Seric 132863780dbdSeric /* now send the data */ 132963780dbdSeric if (tobuf[0] == '\0') 1330b31e7f2bSeric { 13319c9e68d9Seric rcode = EX_OK; 133263780dbdSeric e->e_to = NULL; 1333b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1334b31e7f2bSeric smtprset(m, mci, e); 1335b31e7f2bSeric } 133675889e88Seric else 133775889e88Seric { 133863780dbdSeric e->e_to = tobuf + 1; 133975889e88Seric rcode = smtpdata(m, mci, e); 134063780dbdSeric } 134163780dbdSeric 134263780dbdSeric /* now close the connection */ 1343b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 134415d084d5Seric smtpquit(m, mci, e); 134563780dbdSeric } 13469c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13479c9e68d9Seric { 13489c9e68d9Seric /* try next MX site */ 13499c9e68d9Seric goto tryhost; 13509c9e68d9Seric } 1351c579ef51Seric } 1352b31e7f2bSeric #else /* not SMTP */ 1353a05b3449Sbostic { 135408b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1355845e533cSeric rcode = EX_CONFIG; 1356b31e7f2bSeric goto give_up; 1357a05b3449Sbostic } 1358b31e7f2bSeric #endif /* SMTP */ 1359134746fbSeric #ifdef NAMED_BIND 13602bcc6d2dSeric if (ConfigLevel < 2) 1361912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1362134746fbSeric #endif 13635dfc646bSeric 1364b31e7f2bSeric /* arrange a return receipt if requested */ 13658c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1366b31e7f2bSeric { 1367b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1368b31e7f2bSeric /* do we want to send back more info? */ 1369b31e7f2bSeric } 1370b31e7f2bSeric 1371c77d1c25Seric /* 137263780dbdSeric ** Do final status disposal. 137363780dbdSeric ** We check for something in tobuf for the SMTP case. 1374c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1375c77d1c25Seric ** addressees. 1376c77d1c25Seric */ 1377c77d1c25Seric 1378b31e7f2bSeric give_up: 137963780dbdSeric if (tobuf[0] != '\0') 138081161401Seric giveresponse(rcode, m, mci, e); 1381772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1382b31e7f2bSeric { 1383dde5acadSeric if (rcode != EX_OK) 138483b7ddc9Seric markfailure(e, to, rcode); 1385dde5acadSeric else 1386655518ecSeric { 1387dde5acadSeric to->q_flags |= QSENT; 1388655518ecSeric e->e_nsent++; 1389655518ecSeric } 1390b31e7f2bSeric } 1391b31e7f2bSeric 1392b31e7f2bSeric /* 1393b31e7f2bSeric ** Restore state and return. 1394b31e7f2bSeric */ 1395c77d1c25Seric 139635490626Seric errno = 0; 1397588cad61Seric define('g', (char *) NULL, e); 13985826d9d3Seric return (rcode); 139925a99e2eSeric } 14005dfc646bSeric /* 140183b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 140283b7ddc9Seric ** 140383b7ddc9Seric ** Parameters: 140483b7ddc9Seric ** e -- the envelope we are sending. 140583b7ddc9Seric ** q -- the address to mark. 140683b7ddc9Seric ** rcode -- the code signifying the particular failure. 140783b7ddc9Seric ** 140883b7ddc9Seric ** Returns: 140983b7ddc9Seric ** none. 141083b7ddc9Seric ** 141183b7ddc9Seric ** Side Effects: 141283b7ddc9Seric ** marks the address (and possibly the envelope) with the 141383b7ddc9Seric ** failure so that an error will be returned or 141483b7ddc9Seric ** the message will be queued, as appropriate. 141583b7ddc9Seric */ 141683b7ddc9Seric 141783b7ddc9Seric markfailure(e, q, rcode) 141883b7ddc9Seric register ENVELOPE *e; 141983b7ddc9Seric register ADDRESS *q; 142083b7ddc9Seric int rcode; 142183b7ddc9Seric { 142219c47125Seric char buf[MAXLINE]; 142319c47125Seric 142483b7ddc9Seric if (rcode == EX_OK) 142583b7ddc9Seric return; 1426f170942cSeric else if (rcode == EX_TEMPFAIL) 142783b7ddc9Seric q->q_flags |= QQUEUEUP; 1428f170942cSeric else if (rcode != EX_IOERR && rcode != EX_OSERR) 1429f170942cSeric q->q_flags |= QBADADDR; 143083b7ddc9Seric } 143183b7ddc9Seric /* 1432c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1433c579ef51Seric ** 1434c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1435c579ef51Seric ** violation), so we report those specially. For other 1436c579ef51Seric ** errors, we choose a status message (into statmsg), 1437c579ef51Seric ** and if it represents an error, we print it. 1438c579ef51Seric ** 1439c579ef51Seric ** Parameters: 1440c579ef51Seric ** pid -- pid of mailer. 1441c9be6216Seric ** e -- the current envelope. 1442c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1443c9be6216Seric ** (for error messages). 1444c579ef51Seric ** 1445c579ef51Seric ** Returns: 1446c579ef51Seric ** exit code of mailer. 1447c579ef51Seric ** 1448c579ef51Seric ** Side Effects: 1449c579ef51Seric ** none. 1450c579ef51Seric */ 1451c579ef51Seric 1452c9be6216Seric endmailer(mci, e, pv) 1453b31e7f2bSeric register MCI *mci; 1454c9be6216Seric register ENVELOPE *e; 1455c9be6216Seric char **pv; 1456c579ef51Seric { 1457588cad61Seric int st; 1458c579ef51Seric 145975889e88Seric /* close any connections */ 146075889e88Seric if (mci->mci_in != NULL) 1461c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 146275889e88Seric if (mci->mci_out != NULL) 1463c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 146475889e88Seric mci->mci_in = mci->mci_out = NULL; 146575889e88Seric mci->mci_state = MCIS_CLOSED; 146675889e88Seric 146733db8731Seric /* in the IPC case there is nothing to wait for */ 146875889e88Seric if (mci->mci_pid == 0) 146933db8731Seric return (EX_OK); 147033db8731Seric 147133db8731Seric /* wait for the mailer process to die and collect status */ 147275889e88Seric st = waitfor(mci->mci_pid); 1473588cad61Seric if (st == -1) 147478de67c1Seric { 1475c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1476588cad61Seric return (EX_SOFTWARE); 1477c579ef51Seric } 147833db8731Seric 147933db8731Seric /* see if it died a horrid death */ 1480c579ef51Seric if ((st & 0377) != 0) 1481c579ef51Seric { 1482c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1483c9be6216Seric 1484c9be6216Seric /* log the arguments */ 1485c9be6216Seric if (e->e_xfp != NULL) 1486c9be6216Seric { 1487c9be6216Seric register char **av; 1488c9be6216Seric 1489c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1490c9be6216Seric for (av = pv; *av != NULL; av++) 1491c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1492c9be6216Seric fprintf(e->e_xfp, "\n"); 1493c9be6216Seric } 1494c9be6216Seric 14955f73204aSeric ExitStat = EX_TEMPFAIL; 14965f73204aSeric return (EX_TEMPFAIL); 1497c579ef51Seric } 149833db8731Seric 149933db8731Seric /* normal death -- return status */ 1500588cad61Seric st = (st >> 8) & 0377; 1501588cad61Seric return (st); 1502c579ef51Seric } 1503c579ef51Seric /* 150425a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 150525a99e2eSeric ** 150625a99e2eSeric ** Parameters: 150725a99e2eSeric ** stat -- the status code from the mailer (high byte 150825a99e2eSeric ** only; core dumps must have been taken care of 150925a99e2eSeric ** already). 151081161401Seric ** m -- the mailer info for this mailer. 151181161401Seric ** mci -- the mailer connection info -- can be NULL if the 151281161401Seric ** response is given before the connection is made. 151381161401Seric ** e -- the current envelope. 151425a99e2eSeric ** 151525a99e2eSeric ** Returns: 1516db8841e9Seric ** none. 151725a99e2eSeric ** 151825a99e2eSeric ** Side Effects: 1519c1f9df2cSeric ** Errors may be incremented. 152025a99e2eSeric ** ExitStat may be set. 152125a99e2eSeric */ 152225a99e2eSeric 152381161401Seric giveresponse(stat, m, mci, e) 152425a99e2eSeric int stat; 1525588cad61Seric register MAILER *m; 152681161401Seric register MCI *mci; 1527198d9be0Seric ENVELOPE *e; 152825a99e2eSeric { 15299c16475dSeric register const char *statmsg; 153025a99e2eSeric extern char *SysExMsg[]; 153125a99e2eSeric register int i; 1532d4bd8f0eSbostic extern int N_SysEx; 1533198d9be0Seric char buf[MAXLINE]; 153425a99e2eSeric 153513bbc08cSeric /* 153613bbc08cSeric ** Compute status message from code. 153713bbc08cSeric */ 153813bbc08cSeric 153925a99e2eSeric i = stat - EX__BASE; 1540588cad61Seric if (stat == 0) 15416fe8c3bcSeric { 1542588cad61Seric statmsg = "250 Sent"; 1543ce5531bdSeric if (e->e_statmsg != NULL) 15446fe8c3bcSeric { 1545ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15466fe8c3bcSeric statmsg = buf; 15476fe8c3bcSeric } 15486fe8c3bcSeric } 1549588cad61Seric else if (i < 0 || i > N_SysEx) 1550588cad61Seric { 1551588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1552588cad61Seric stat = EX_UNAVAILABLE; 1553588cad61Seric statmsg = buf; 1554588cad61Seric } 1555198d9be0Seric else if (stat == EX_TEMPFAIL) 1556198d9be0Seric { 15577d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1558d4bd8f0eSbostic #ifdef NAMED_BIND 1559f28da541Smiriam if (h_errno == TRY_AGAIN) 1560f28da541Smiriam statmsg = errstring(h_errno+MAX_ERRNO); 1561f28da541Smiriam else 1562d4bd8f0eSbostic #endif 1563f28da541Smiriam { 15648557d168Seric if (errno != 0) 1565d87e85f3Seric statmsg = errstring(errno); 1566d87e85f3Seric else 1567d87e85f3Seric { 1568d87e85f3Seric #ifdef SMTP 1569d87e85f3Seric extern char SmtpError[]; 1570d87e85f3Seric 1571d87e85f3Seric statmsg = SmtpError; 15726c2c3107Seric #else /* SMTP */ 1573d87e85f3Seric statmsg = NULL; 15746c2c3107Seric #endif /* SMTP */ 1575d87e85f3Seric } 1576f28da541Smiriam } 1577d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1578d87e85f3Seric { 157987c9b3e7Seric (void) strcat(buf, ": "); 1580d87e85f3Seric (void) strcat(buf, statmsg); 15818557d168Seric } 1582198d9be0Seric statmsg = buf; 1583198d9be0Seric } 1584f170942cSeric #ifdef NAMED_BIND 1585f170942cSeric else if (stat == EX_NOHOST && h_errno != 0) 1586f170942cSeric { 1587f170942cSeric statmsg = errstring(h_errno + MAX_ERRNO); 1588f170942cSeric (void) sprintf(buf, "%s (%s)", SysExMsg[i], statmsg); 1589f170942cSeric statmsg = buf; 1590f170942cSeric } 1591f170942cSeric #endif 159225a99e2eSeric else 1593d87e85f3Seric { 159425a99e2eSeric statmsg = SysExMsg[i]; 15957d55540cSeric if (*statmsg++ == ':') 15967d55540cSeric { 15977d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 15987d55540cSeric statmsg = buf; 15997d55540cSeric } 1600d87e85f3Seric } 1601588cad61Seric 1602588cad61Seric /* 1603588cad61Seric ** Print the message as appropriate 1604588cad61Seric */ 1605588cad61Seric 1606198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1607e12d03eeSeric message(&statmsg[4], errstring(errno)); 160825a99e2eSeric else 160925a99e2eSeric { 1610c1f9df2cSeric Errors++; 1611e12d03eeSeric usrerr(statmsg, errstring(errno)); 161225a99e2eSeric } 161325a99e2eSeric 161425a99e2eSeric /* 161525a99e2eSeric ** Final cleanup. 161625a99e2eSeric ** Log a record of the transaction. Compute the new 161725a99e2eSeric ** ExitStat -- if we already had an error, stick with 161825a99e2eSeric ** that. 161925a99e2eSeric */ 162025a99e2eSeric 16212f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 162281161401Seric logdelivery(m, mci, &statmsg[4], e); 1623eb238f8cSeric 1624eb238f8cSeric if (stat != EX_TEMPFAIL) 1625eb238f8cSeric setstat(stat); 1626198d9be0Seric if (stat != EX_OK) 1627198d9be0Seric { 1628198d9be0Seric if (e->e_message != NULL) 1629198d9be0Seric free(e->e_message); 1630198d9be0Seric e->e_message = newstr(&statmsg[4]); 1631198d9be0Seric } 16328557d168Seric errno = 0; 1633d4bd8f0eSbostic #ifdef NAMED_BIND 1634f28da541Smiriam h_errno = 0; 1635d4bd8f0eSbostic #endif 1636eb238f8cSeric } 1637eb238f8cSeric /* 1638eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1639eb238f8cSeric ** 1640eb238f8cSeric ** Parameters: 164181161401Seric ** m -- the mailer info. Can be NULL for initial queue. 164281161401Seric ** mci -- the mailer connection info -- can be NULL if the 164381161401Seric ** log is occuring when no connection is active. 164481161401Seric ** stat -- the message to print for the status. 164581161401Seric ** e -- the current envelope. 1646eb238f8cSeric ** 1647eb238f8cSeric ** Returns: 1648eb238f8cSeric ** none 1649eb238f8cSeric ** 1650eb238f8cSeric ** Side Effects: 1651eb238f8cSeric ** none 1652eb238f8cSeric */ 1653eb238f8cSeric 165481161401Seric logdelivery(m, mci, stat, e) 165581161401Seric MAILER *m; 165681161401Seric register MCI *mci; 1657eb238f8cSeric char *stat; 1658b31e7f2bSeric register ENVELOPE *e; 16595cf56be3Seric { 1660eb238f8cSeric # ifdef LOG 1661d6acf3eeSeric char buf[512]; 16629507d1f9Seric 166348ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 166481161401Seric 166548ed5d33Seric if (m != NULL) 166671ff6caaSeric { 166748ed5d33Seric (void) strcat(buf, ", mailer="); 166848ed5d33Seric (void) strcat(buf, m->m_name); 166971ff6caaSeric } 167048ed5d33Seric 167148ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 167271ff6caaSeric { 167371ff6caaSeric # ifdef DAEMON 1674e2f2f828Seric extern SOCKADDR CurHostAddr; 167548ed5d33Seric # endif 167671ff6caaSeric 167748ed5d33Seric (void) strcat(buf, ", relay="); 167848ed5d33Seric (void) strcat(buf, mci->mci_host); 167948ed5d33Seric 168048ed5d33Seric # ifdef DAEMON 168148ed5d33Seric (void) strcat(buf, " ("); 1682e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 168348ed5d33Seric (void) strcat(buf, ")"); 168471ff6caaSeric # endif 168571ff6caaSeric } 16869507d1f9Seric else 168748ed5d33Seric { 168848ed5d33Seric char *p = macvalue('h', e); 16899507d1f9Seric 169048ed5d33Seric if (p != NULL && p[0] != '\0') 169148ed5d33Seric { 169248ed5d33Seric (void) strcat(buf, ", relay="); 169348ed5d33Seric (void) strcat(buf, p); 169448ed5d33Seric } 169548ed5d33Seric } 1696d6acf3eeSeric 1697d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1698d6acf3eeSeric e->e_id, e->e_to, buf, stat); 16996c2c3107Seric # endif /* LOG */ 170025a99e2eSeric } 170125a99e2eSeric /* 170251552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 170325a99e2eSeric ** 170451552439Seric ** This can be made an arbitrary message separator by changing $l 170551552439Seric ** 17069b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17079b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17089b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17099b6c17a6Seric ** this kind of antique garbage???? 171025a99e2eSeric ** 171125a99e2eSeric ** Parameters: 171251552439Seric ** fp -- the file to output to. 171351552439Seric ** m -- the mailer describing this entry. 171425a99e2eSeric ** 171525a99e2eSeric ** Returns: 171651552439Seric ** none 171725a99e2eSeric ** 171825a99e2eSeric ** Side Effects: 171951552439Seric ** outputs some text to fp. 172025a99e2eSeric */ 172125a99e2eSeric 1722b31e7f2bSeric putfromline(fp, m, e) 172351552439Seric register FILE *fp; 172451552439Seric register MAILER *m; 1725b31e7f2bSeric ENVELOPE *e; 172625a99e2eSeric { 17272bc47524Seric char *template = "\201l\n"; 172851552439Seric char buf[MAXLINE]; 172925a99e2eSeric 173057fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 173151552439Seric return; 173213bbc08cSeric 17332c7e1b8dSeric # ifdef UGLYUUCP 173457fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 173574b6e67bSeric { 1736ea09d6edSeric char *bang; 1737ea09d6edSeric char xbuf[MAXLINE]; 173874b6e67bSeric 1739ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17406c2c3107Seric bang = strchr(buf, '!'); 174174b6e67bSeric if (bang == NULL) 174208b25121Seric syserr("554 No ! in UUCP! (%s)", buf); 174374b6e67bSeric else 1744588cad61Seric { 1745ea09d6edSeric *bang++ = '\0'; 17462bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1747ea09d6edSeric template = xbuf; 174874b6e67bSeric } 1749588cad61Seric } 17506c2c3107Seric # endif /* UGLYUUCP */ 1751b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 175277b52738Seric putline(buf, fp, m); 1753bc6e2962Seric } 1754bc6e2962Seric /* 175551552439Seric ** PUTBODY -- put the body of a message. 175651552439Seric ** 175751552439Seric ** Parameters: 175851552439Seric ** fp -- file to output onto. 175977b52738Seric ** m -- a mailer descriptor to control output format. 17609a6a5f55Seric ** e -- the envelope to put out. 176103c02fdeSeric ** separator -- if non-NULL, a message separator that must 176203c02fdeSeric ** not be permitted in the resulting message. 176351552439Seric ** 176451552439Seric ** Returns: 176551552439Seric ** none. 176651552439Seric ** 176751552439Seric ** Side Effects: 176851552439Seric ** The message is written onto fp. 176951552439Seric */ 177051552439Seric 177103c02fdeSeric putbody(fp, m, e, separator) 177251552439Seric FILE *fp; 1773588cad61Seric MAILER *m; 17749a6a5f55Seric register ENVELOPE *e; 177503c02fdeSeric char *separator; 177651552439Seric { 177777b52738Seric char buf[MAXLINE]; 177851552439Seric 177951552439Seric /* 178051552439Seric ** Output the body of the message 178151552439Seric */ 178251552439Seric 17839a6a5f55Seric if (e->e_dfp == NULL) 178451552439Seric { 17859a6a5f55Seric if (e->e_df != NULL) 17869a6a5f55Seric { 17879a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 17889a6a5f55Seric if (e->e_dfp == NULL) 17898f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 17908f9146b0Srick e->e_df, e->e_to, e->e_from); 17919a6a5f55Seric } 17929a6a5f55Seric else 179377b52738Seric putline("<<< No Message Collected >>>", fp, m); 17949a6a5f55Seric } 17959a6a5f55Seric if (e->e_dfp != NULL) 17969a6a5f55Seric { 17979a6a5f55Seric rewind(e->e_dfp); 179877b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 179924fc8aeeSeric { 180024fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1801d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18023462ad9eSeric (void) putc('>', fp); 180303c02fdeSeric if (buf[0] == '-' && buf[1] == '-' && separator != NULL) 180403c02fdeSeric { 180503c02fdeSeric /* possible separator */ 180603c02fdeSeric int sl = strlen(separator); 180703c02fdeSeric 180803c02fdeSeric if (strncmp(&buf[2], separator, sl) == 0) 180903c02fdeSeric (void) putc(' ', fp); 181003c02fdeSeric } 181177b52738Seric putline(buf, fp, m); 181224fc8aeeSeric } 181351552439Seric 18149a6a5f55Seric if (ferror(e->e_dfp)) 181551552439Seric { 181651552439Seric syserr("putbody: read error"); 181751552439Seric ExitStat = EX_IOERR; 181851552439Seric } 181951552439Seric } 182051552439Seric 18210890ba1fSeric /* some mailers want extra blank line at end of message */ 18220890ba1fSeric if (bitnset(M_BLANKEND, m->m_flags) && buf[0] != '\0' && buf[0] != '\n') 18230890ba1fSeric putline("", fp, m); 18240890ba1fSeric 182551552439Seric (void) fflush(fp); 182651552439Seric if (ferror(fp) && errno != EPIPE) 182751552439Seric { 182851552439Seric syserr("putbody: write error"); 182951552439Seric ExitStat = EX_IOERR; 183051552439Seric } 183151552439Seric errno = 0; 183225a99e2eSeric } 183325a99e2eSeric /* 183425a99e2eSeric ** MAILFILE -- Send a message to a file. 183525a99e2eSeric ** 1836f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1837f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1838f129ec7dSeric ** rather than the real user. Obviously, this only works if 1839f129ec7dSeric ** sendmail runs as root. 1840f129ec7dSeric ** 1841588cad61Seric ** This could be done as a subordinate mailer, except that it 1842588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1843588cad61Seric ** view this as being sufficiently important as to include it 1844588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1845588cad61Seric ** to create another process plus some pipes to save the message. 1846588cad61Seric ** 184725a99e2eSeric ** Parameters: 184825a99e2eSeric ** filename -- the name of the file to send to. 18496259796dSeric ** ctladdr -- the controlling address header -- includes 18506259796dSeric ** the userid/groupid to be when sending. 185125a99e2eSeric ** 185225a99e2eSeric ** Returns: 185325a99e2eSeric ** The exit code associated with the operation. 185425a99e2eSeric ** 185525a99e2eSeric ** Side Effects: 185625a99e2eSeric ** none. 185725a99e2eSeric */ 185825a99e2eSeric 1859b31e7f2bSeric mailfile(filename, ctladdr, e) 186025a99e2eSeric char *filename; 18616259796dSeric ADDRESS *ctladdr; 1862b31e7f2bSeric register ENVELOPE *e; 186325a99e2eSeric { 186425a99e2eSeric register FILE *f; 186532d19d43Seric register int pid; 186615d084d5Seric int mode; 186725a99e2eSeric 1868671745f3Seric if (tTd(11, 1)) 1869671745f3Seric { 1870671745f3Seric printf("mailfile %s\n ctladdr=", filename); 1871671745f3Seric printaddr(ctladdr, FALSE); 1872671745f3Seric } 1873671745f3Seric 1874f170942cSeric if (e->e_xfp != NULL) 1875f170942cSeric fflush(e->e_xfp); 1876f170942cSeric 187732d19d43Seric /* 187832d19d43Seric ** Fork so we can change permissions here. 187932d19d43Seric ** Note that we MUST use fork, not vfork, because of 188032d19d43Seric ** the complications of calling subroutines, etc. 188132d19d43Seric */ 188232d19d43Seric 188332d19d43Seric DOFORK(fork); 188432d19d43Seric 188532d19d43Seric if (pid < 0) 188632d19d43Seric return (EX_OSERR); 188732d19d43Seric else if (pid == 0) 188832d19d43Seric { 188932d19d43Seric /* child -- actually write to file */ 1890f129ec7dSeric struct stat stb; 1891f129ec7dSeric 18920984da9fSeric (void) signal(SIGINT, SIG_DFL); 18930984da9fSeric (void) signal(SIGHUP, SIG_DFL); 18940984da9fSeric (void) signal(SIGTERM, SIG_DFL); 18953462ad9eSeric (void) umask(OldUmask); 189695f16dc0Seric 1897f129ec7dSeric if (stat(filename, &stb) < 0) 18983a98e7eaSeric stb.st_mode = FileMode; 189915d084d5Seric mode = stb.st_mode; 190095f16dc0Seric 190195f16dc0Seric /* limit the errors to those actually caused in the child */ 190295f16dc0Seric errno = 0; 190395f16dc0Seric ExitStat = EX_OK; 190495f16dc0Seric 1905f129ec7dSeric if (bitset(0111, stb.st_mode)) 1906f129ec7dSeric exit(EX_CANTCREAT); 190703827b5fSeric if (ctladdr == NULL) 19088f9146b0Srick ctladdr = &e->e_from; 190915d084d5Seric else 191015d084d5Seric { 191115d084d5Seric /* ignore setuid and setgid bits */ 191215d084d5Seric mode &= ~(S_ISGID|S_ISUID); 191315d084d5Seric } 191415d084d5Seric 19158f9146b0Srick /* we have to open the dfile BEFORE setuid */ 19168f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 19178f9146b0Srick { 19188f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 191995f16dc0Seric if (e->e_dfp == NULL) 192095f16dc0Seric { 19218f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 19228f9146b0Srick e->e_df, e->e_to, e->e_from); 19238f9146b0Srick } 19248f9146b0Srick } 19258f9146b0Srick 192615d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1927e36b99e2Seric { 192895f16dc0Seric if (ctladdr->q_uid == 0) 192995f16dc0Seric { 1930e36b99e2Seric (void) setgid(DefGid); 1931898a126bSbostic (void) initgroups(DefUser, DefGid); 193295f16dc0Seric } 193395f16dc0Seric else 193495f16dc0Seric { 19356259796dSeric (void) setgid(ctladdr->q_gid); 1936898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1937898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1938898a126bSbostic ctladdr->q_gid); 1939898a126bSbostic } 1940e36b99e2Seric } 194115d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1942e36b99e2Seric { 1943e36b99e2Seric if (ctladdr->q_uid == 0) 1944e36b99e2Seric (void) setuid(DefUid); 1945e36b99e2Seric else 19466259796dSeric (void) setuid(ctladdr->q_uid); 1947e36b99e2Seric } 194895f16dc0Seric FileName = filename; 194995f16dc0Seric LineNumber = 0; 19503a98e7eaSeric f = dfopen(filename, O_WRONLY|O_CREAT|O_APPEND, FileMode); 195125a99e2eSeric if (f == NULL) 195295f16dc0Seric { 195308b25121Seric message("554 cannot open"); 195432d19d43Seric exit(EX_CANTCREAT); 195595f16dc0Seric } 195625a99e2eSeric 19570331ce05Seric putfromline(f, FileMailer, e); 19580331ce05Seric (*e->e_puthdr)(f, FileMailer, e); 19590331ce05Seric putline("\n", f, FileMailer); 196003c02fdeSeric (*e->e_putbody)(f, FileMailer, e, NULL); 19610331ce05Seric putline("\n", f, FileMailer); 196295f16dc0Seric if (ferror(f)) 196395f16dc0Seric { 196408b25121Seric message("451 I/O error"); 196595f16dc0Seric setstat(EX_IOERR); 196695f16dc0Seric } 1967ee4b0922Seric (void) xfclose(f, "mailfile", filename); 196832d19d43Seric (void) fflush(stdout); 1969e36b99e2Seric 197027628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1971c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 197295f16dc0Seric exit(ExitStat); 197313bbc08cSeric /*NOTREACHED*/ 197432d19d43Seric } 197532d19d43Seric else 197632d19d43Seric { 197732d19d43Seric /* parent -- wait for exit status */ 1978588cad61Seric int st; 197932d19d43Seric 1980588cad61Seric st = waitfor(pid); 1981588cad61Seric if ((st & 0377) != 0) 1982588cad61Seric return (EX_UNAVAILABLE); 1983588cad61Seric else 1984588cad61Seric return ((st >> 8) & 0377); 19858f9146b0Srick /*NOTREACHED*/ 198632d19d43Seric } 198725a99e2eSeric } 1988ea4dc939Seric /* 1989e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 1990e103b48fSeric ** 1991e103b48fSeric ** The signature describes how we are going to send this -- it 1992e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 1993e103b48fSeric ** an ordered list of MX hosts. 1994e103b48fSeric ** 1995e103b48fSeric ** Parameters: 1996e103b48fSeric ** m -- the mailer describing this host. 1997e103b48fSeric ** host -- the host name. 1998e103b48fSeric ** e -- the current envelope. 1999e103b48fSeric ** 2000e103b48fSeric ** Returns: 2001e103b48fSeric ** The signature for this host. 2002e103b48fSeric ** 2003e103b48fSeric ** Side Effects: 2004e103b48fSeric ** Can tweak the symbol table. 2005e103b48fSeric */ 2006e103b48fSeric 2007e103b48fSeric char * 2008e103b48fSeric hostsignature(m, host, e) 2009e103b48fSeric register MAILER *m; 2010e103b48fSeric char *host; 2011e103b48fSeric ENVELOPE *e; 2012e103b48fSeric { 2013e103b48fSeric register char *p; 2014e103b48fSeric register STAB *s; 2015e103b48fSeric int i; 2016e103b48fSeric int len; 2017e103b48fSeric #ifdef NAMED_BIND 2018e103b48fSeric int nmx; 2019e103b48fSeric auto int rcode; 2020bafdc4e5Seric char *hp; 2021bafdc4e5Seric char *endp; 2022516782b4Seric int oldoptions; 2023e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 2024e103b48fSeric #endif 2025e103b48fSeric 2026e103b48fSeric /* 2027e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 2028e103b48fSeric */ 2029e103b48fSeric 2030e103b48fSeric p = m->m_mailer; 2031e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2032e103b48fSeric { 2033e103b48fSeric /* just an ordinary mailer */ 2034e103b48fSeric return host; 2035e103b48fSeric } 2036e103b48fSeric 2037e103b48fSeric /* 2038e103b48fSeric ** If it is a numeric address, just return it. 2039e103b48fSeric */ 2040e103b48fSeric 2041e103b48fSeric if (host[0] == '[') 2042e103b48fSeric return host; 2043e103b48fSeric 2044e103b48fSeric /* 2045e103b48fSeric ** Look it up in the symbol table. 2046e103b48fSeric */ 2047e103b48fSeric 2048e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2049e103b48fSeric if (s->s_hostsig != NULL) 2050e103b48fSeric return s->s_hostsig; 2051e103b48fSeric 2052e103b48fSeric /* 2053e103b48fSeric ** Not already there -- create a signature. 2054e103b48fSeric */ 2055e103b48fSeric 2056e103b48fSeric #ifdef NAMED_BIND 2057516782b4Seric if (ConfigLevel < 2) 2058516782b4Seric { 2059516782b4Seric oldoptions = _res.options; 2060516782b4Seric _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2061516782b4Seric } 2062516782b4Seric 2063bafdc4e5Seric for (hp = host; hp != NULL; hp = endp) 2064bafdc4e5Seric { 2065bafdc4e5Seric endp = strchr(hp, ':'); 2066bafdc4e5Seric if (endp != NULL) 2067bafdc4e5Seric *endp = '\0'; 2068bafdc4e5Seric 20697bf809e6Seric nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 20707d55540cSeric 2071e103b48fSeric if (nmx <= 0) 2072e103b48fSeric { 2073e103b48fSeric register MCI *mci; 2074e103b48fSeric extern int errno; 2075e103b48fSeric 2076e103b48fSeric /* update the connection info for this host */ 2077bafdc4e5Seric mci = mci_get(hp, m); 2078e103b48fSeric mci->mci_exitstat = rcode; 2079e103b48fSeric mci->mci_errno = errno; 2080f170942cSeric #ifdef NAMED_BIND 2081f170942cSeric mci->mci_herrno = h_errno; 2082f170942cSeric #endif 2083e103b48fSeric 2084e103b48fSeric /* and return the original host name as the signature */ 2085bafdc4e5Seric nmx = 1; 2086bafdc4e5Seric mxhosts[0] = hp; 2087e103b48fSeric } 2088e103b48fSeric 2089e103b48fSeric len = 0; 2090e103b48fSeric for (i = 0; i < nmx; i++) 2091e103b48fSeric { 2092e103b48fSeric len += strlen(mxhosts[i]) + 1; 2093e103b48fSeric } 2094bafdc4e5Seric if (s->s_hostsig != NULL) 2095bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2096bafdc4e5Seric p = xalloc(len); 2097bafdc4e5Seric if (s->s_hostsig != NULL) 2098bafdc4e5Seric { 2099bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2100bafdc4e5Seric free(s->s_hostsig); 2101bafdc4e5Seric s->s_hostsig = p; 2102bafdc4e5Seric p += strlen(p); 2103bafdc4e5Seric *p++ = ':'; 2104bafdc4e5Seric } 2105bafdc4e5Seric else 2106bafdc4e5Seric s->s_hostsig = p; 2107e103b48fSeric for (i = 0; i < nmx; i++) 2108e103b48fSeric { 2109e103b48fSeric if (i != 0) 2110e103b48fSeric *p++ = ':'; 2111e103b48fSeric strcpy(p, mxhosts[i]); 2112e103b48fSeric p += strlen(p); 2113e103b48fSeric } 2114bafdc4e5Seric if (endp != NULL) 2115bafdc4e5Seric *endp++ = ':'; 2116bafdc4e5Seric } 2117e103b48fSeric makelower(s->s_hostsig); 2118516782b4Seric if (ConfigLevel < 2) 2119516782b4Seric _res.options = oldoptions; 2120e103b48fSeric #else 2121e103b48fSeric /* not using BIND -- the signature is just the host name */ 2122e103b48fSeric s->s_hostsig = host; 2123e103b48fSeric #endif 2124e103b48fSeric if (tTd(17, 1)) 2125e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2126e103b48fSeric return s->s_hostsig; 2127e103b48fSeric } 2128