14227346bSdist /* 20942ea6aSbostic * Copyright (c) 1983 Eric P. Allman 3e70a7521Sbostic * Copyright (c) 1988 Regents of the University of California. 4e70a7521Sbostic * All rights reserved. 5e70a7521Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 74227346bSdist */ 84227346bSdist 94227346bSdist #ifndef lint 10*6fe8c3bcSeric static char sccsid[] = "@(#)deliver.c 6.56 (Berkeley) 03/29/93"; 11e70a7521Sbostic #endif /* not lint */ 124227346bSdist 13fcde9cc8Sbostic #include "sendmail.h" 14a8c080f0Seric #include <signal.h> 15c77d1c25Seric #include <sys/stat.h> 16f28da541Smiriam #include <netdb.h> 17911693bfSbostic #include <errno.h> 18134746fbSeric #ifdef NAMED_BIND 19912a731aSbostic #include <arpa/nameser.h> 20912a731aSbostic #include <resolv.h> 21134746fbSeric #endif 2225a99e2eSeric 2325a99e2eSeric /* 249c9e68d9Seric ** SENDALL -- actually send all the messages. 259c9e68d9Seric ** 269c9e68d9Seric ** Parameters: 279c9e68d9Seric ** e -- the envelope to send. 289c9e68d9Seric ** mode -- the delivery mode to use. If SM_DEFAULT, use 299c9e68d9Seric ** the current e->e_sendmode. 309c9e68d9Seric ** 319c9e68d9Seric ** Returns: 329c9e68d9Seric ** none. 339c9e68d9Seric ** 349c9e68d9Seric ** Side Effects: 359c9e68d9Seric ** Scans the send lists and sends everything it finds. 369c9e68d9Seric ** Delivers any appropriate error messages. 379c9e68d9Seric ** If we are running in a non-interactive mode, takes the 389c9e68d9Seric ** appropriate action. 399c9e68d9Seric */ 409c9e68d9Seric 419c9e68d9Seric sendall(e, mode) 429c9e68d9Seric ENVELOPE *e; 439c9e68d9Seric char mode; 449c9e68d9Seric { 459c9e68d9Seric register ADDRESS *q; 469c9e68d9Seric char *owner; 479c9e68d9Seric int otherowners; 489c9e68d9Seric register ENVELOPE *ee; 499c9e68d9Seric ENVELOPE *splitenv = NULL; 509c9e68d9Seric 519c9e68d9Seric /* determine actual delivery mode */ 529c9e68d9Seric if (mode == SM_DEFAULT) 539c9e68d9Seric { 549c9e68d9Seric extern bool shouldqueue(); 559c9e68d9Seric 569c9e68d9Seric mode = e->e_sendmode; 579c9e68d9Seric if (mode != SM_VERIFY && 589c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 599c9e68d9Seric mode = SM_QUEUE; 609c9e68d9Seric } 619c9e68d9Seric 629c9e68d9Seric if (tTd(13, 1)) 639c9e68d9Seric { 649c9e68d9Seric printf("\nSENDALL: mode %c, e_from ", mode); 659c9e68d9Seric printaddr(&e->e_from, FALSE); 669c9e68d9Seric printf("sendqueue:\n"); 679c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 689c9e68d9Seric } 699c9e68d9Seric 709c9e68d9Seric /* 719c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 729c9e68d9Seric ** Check to make sure the hop count is reasonable. 739c9e68d9Seric ** Delete sends to the sender in mailing lists. 749c9e68d9Seric */ 759c9e68d9Seric 769c9e68d9Seric CurEnv = e; 779c9e68d9Seric 789c9e68d9Seric if (e->e_hopcount > MaxHopCount) 799c9e68d9Seric { 809c9e68d9Seric errno = 0; 819c9e68d9Seric syserr("554 too many hops %d (%d max): from %s, to %s", 829c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 839c9e68d9Seric e->e_sendqueue->q_paddr); 849c9e68d9Seric return; 859c9e68d9Seric } 869c9e68d9Seric 879c9e68d9Seric if (!MeToo) 889c9e68d9Seric { 899c9e68d9Seric extern ADDRESS *recipient(); 909c9e68d9Seric 919c9e68d9Seric if (tTd(13, 5)) 929c9e68d9Seric { 939c9e68d9Seric printf("sendall: QDONTSEND "); 949c9e68d9Seric printaddr(&e->e_from, FALSE); 959c9e68d9Seric } 969c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 979c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 989c9e68d9Seric } 999c9e68d9Seric 1009c9e68d9Seric /* 1019c9e68d9Seric ** Handle alias owners. 1029c9e68d9Seric ** 1039c9e68d9Seric ** We scan up the q_alias chain looking for owners. 1049c9e68d9Seric ** We discard owners that are the same as the return path. 1059c9e68d9Seric */ 1069c9e68d9Seric 1079c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1089c9e68d9Seric { 1099c9e68d9Seric register struct address *a; 1109c9e68d9Seric 1119c9e68d9Seric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 1129c9e68d9Seric continue; 1139c9e68d9Seric if (a != NULL) 1149c9e68d9Seric q->q_owner = a->q_owner; 1159c9e68d9Seric 1169c9e68d9Seric if (q->q_owner != NULL && 1179c9e68d9Seric !bitset(QDONTSEND, q->q_flags) && 1189c9e68d9Seric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 1199c9e68d9Seric q->q_owner = NULL; 1209c9e68d9Seric } 1219c9e68d9Seric 1229c9e68d9Seric owner = ""; 1239c9e68d9Seric otherowners = 1; 1249c9e68d9Seric while (owner != NULL && otherowners > 0) 1259c9e68d9Seric { 1269c9e68d9Seric owner = NULL; 1279c9e68d9Seric otherowners = 0; 1289c9e68d9Seric 1299c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1309c9e68d9Seric { 1319c9e68d9Seric if (bitset(QDONTSEND, q->q_flags)) 1329c9e68d9Seric continue; 1339c9e68d9Seric 1349c9e68d9Seric if (q->q_owner != NULL) 1359c9e68d9Seric { 1369c9e68d9Seric if (owner == NULL) 1379c9e68d9Seric owner = q->q_owner; 1389c9e68d9Seric else if (owner != q->q_owner) 1399c9e68d9Seric { 1409c9e68d9Seric if (strcmp(owner, q->q_owner) == 0) 1419c9e68d9Seric { 1429c9e68d9Seric /* make future comparisons cheap */ 1439c9e68d9Seric q->q_owner = owner; 1449c9e68d9Seric } 1459c9e68d9Seric else 1469c9e68d9Seric { 1479c9e68d9Seric otherowners++; 1489c9e68d9Seric } 1499c9e68d9Seric owner = q->q_owner; 1509c9e68d9Seric } 1519c9e68d9Seric } 1529c9e68d9Seric else 1539c9e68d9Seric { 1549c9e68d9Seric otherowners++; 1559c9e68d9Seric } 1569c9e68d9Seric } 1579c9e68d9Seric 1589c9e68d9Seric if (owner != NULL && otherowners > 0) 1599c9e68d9Seric { 1609c9e68d9Seric extern HDR *copyheader(); 1619c9e68d9Seric extern ADDRESS *copyqueue(); 1629c9e68d9Seric 1639c9e68d9Seric /* 1649c9e68d9Seric ** Split this envelope into two. 1659c9e68d9Seric */ 1669c9e68d9Seric 1679c9e68d9Seric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 1689c9e68d9Seric *ee = *e; 1699c9e68d9Seric ee->e_id = NULL; 1709c9e68d9Seric (void) queuename(ee, '\0'); 1719c9e68d9Seric 1729c9e68d9Seric if (tTd(13, 1)) 1739c9e68d9Seric printf("sendall: split %s into %s\n", 1749c9e68d9Seric e->e_id, ee->e_id); 1759c9e68d9Seric 1769c9e68d9Seric ee->e_header = copyheader(e->e_header); 1779c9e68d9Seric ee->e_sendqueue = copyqueue(e->e_sendqueue); 1789c9e68d9Seric ee->e_errorqueue = copyqueue(e->e_errorqueue); 1799c9e68d9Seric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE); 1809c9e68d9Seric setsender(owner, ee, NULL, TRUE); 1819c9e68d9Seric if (tTd(13, 5)) 1829c9e68d9Seric { 1839c9e68d9Seric printf("sendall(split): QDONTSEND "); 1849c9e68d9Seric printaddr(&ee->e_from, FALSE); 1859c9e68d9Seric } 1869c9e68d9Seric ee->e_from.q_flags |= QDONTSEND; 1879c9e68d9Seric ee->e_dfp = NULL; 1889c9e68d9Seric ee->e_xfp = NULL; 1899c9e68d9Seric ee->e_lockfp = NULL; 1909c9e68d9Seric ee->e_df = NULL; 1919c9e68d9Seric ee->e_errormode = EM_MAIL; 1929c9e68d9Seric ee->e_sibling = splitenv; 1939c9e68d9Seric splitenv = ee; 1949c9e68d9Seric 1959c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 1969c9e68d9Seric if (q->q_owner == owner) 1979c9e68d9Seric q->q_flags |= QDONTSEND; 1989c9e68d9Seric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 1999c9e68d9Seric if (q->q_owner != owner) 2009c9e68d9Seric q->q_flags |= QDONTSEND; 2019c9e68d9Seric 2029c9e68d9Seric if (e->e_df != NULL && mode != SM_VERIFY) 2039c9e68d9Seric { 2049c9e68d9Seric ee->e_dfp = NULL; 2059c9e68d9Seric ee->e_df = newstr(queuename(ee, 'd')); 2069c9e68d9Seric if (link(e->e_df, ee->e_df) < 0) 2079c9e68d9Seric { 2089c9e68d9Seric syserr("sendall: link(%s, %s)", 2099c9e68d9Seric e->e_df, ee->e_df); 2109c9e68d9Seric } 2119c9e68d9Seric } 2129c9e68d9Seric 2139c9e68d9Seric if (mode != SM_VERIFY) 2149c9e68d9Seric openxscript(ee); 2159c9e68d9Seric #ifdef LOG 2169c9e68d9Seric if (LogLevel > 4) 2179c9e68d9Seric syslog(LOG_INFO, "%s: clone %s", 2189c9e68d9Seric ee->e_id, e->e_id); 2199c9e68d9Seric #endif 2209c9e68d9Seric } 2219c9e68d9Seric } 2229c9e68d9Seric 2239c9e68d9Seric if (owner != NULL) 2249c9e68d9Seric { 2259c9e68d9Seric setsender(owner, e, NULL, TRUE); 2269c9e68d9Seric if (tTd(13, 5)) 2279c9e68d9Seric { 2289c9e68d9Seric printf("sendall(owner): QDONTSEND "); 2299c9e68d9Seric printaddr(&e->e_from, FALSE); 2309c9e68d9Seric } 2319c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 2329c9e68d9Seric e->e_errormode = EM_MAIL; 2339c9e68d9Seric } 2349c9e68d9Seric 2359c9e68d9Seric # ifdef QUEUE 2369c9e68d9Seric if ((mode == SM_QUEUE || mode == SM_FORK || 2379c9e68d9Seric (mode != SM_VERIFY && SuperSafe)) && 2389c9e68d9Seric !bitset(EF_INQUEUE, e->e_flags)) 2399c9e68d9Seric { 2409c9e68d9Seric /* be sure everything is instantiated in the queue */ 2419c9e68d9Seric queueup(e, TRUE, mode == SM_QUEUE); 2429c9e68d9Seric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2439c9e68d9Seric queueup(ee, TRUE, mode == SM_QUEUE); 2449c9e68d9Seric } 2459c9e68d9Seric #endif /* QUEUE */ 2469c9e68d9Seric 2479c9e68d9Seric if (splitenv != NULL) 2489c9e68d9Seric { 2499c9e68d9Seric if (tTd(13, 1)) 2509c9e68d9Seric { 2519c9e68d9Seric printf("\nsendall: Split queue; remaining queue:\n"); 2529c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 2539c9e68d9Seric } 2549c9e68d9Seric 2559c9e68d9Seric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2569c9e68d9Seric { 2579c9e68d9Seric CurEnv = ee; 2589c9e68d9Seric sendenvelope(ee, mode); 2599c9e68d9Seric } 2609c9e68d9Seric 2619c9e68d9Seric CurEnv = e; 2629c9e68d9Seric } 2639c9e68d9Seric sendenvelope(e, mode); 2649c9e68d9Seric 2659c9e68d9Seric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 2669c9e68d9Seric dropenvelope(splitenv); 2679c9e68d9Seric } 2689c9e68d9Seric 2699c9e68d9Seric sendenvelope(e, mode) 2709c9e68d9Seric register ENVELOPE *e; 2719c9e68d9Seric char mode; 2729c9e68d9Seric { 2739c9e68d9Seric bool oldverbose; 2749c9e68d9Seric int pid; 2759c9e68d9Seric register ADDRESS *q; 2769c9e68d9Seric #ifdef LOCKF 2779c9e68d9Seric struct flock lfd; 2789c9e68d9Seric #endif 2799c9e68d9Seric 2809c9e68d9Seric oldverbose = Verbose; 2819c9e68d9Seric switch (mode) 2829c9e68d9Seric { 2839c9e68d9Seric case SM_VERIFY: 2849c9e68d9Seric Verbose = TRUE; 2859c9e68d9Seric break; 2869c9e68d9Seric 2879c9e68d9Seric case SM_QUEUE: 2889c9e68d9Seric queueonly: 2899c9e68d9Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 2909c9e68d9Seric return; 2919c9e68d9Seric 2929c9e68d9Seric case SM_FORK: 2939c9e68d9Seric if (e->e_xfp != NULL) 2949c9e68d9Seric (void) fflush(e->e_xfp); 2959c9e68d9Seric 2969c9e68d9Seric # ifdef LOCKF 2979c9e68d9Seric /* 2989c9e68d9Seric ** Since lockf has the interesting semantic that the 2999c9e68d9Seric ** lock is lost when we fork, we have to risk losing 3009c9e68d9Seric ** the lock here by closing before the fork, and then 3019c9e68d9Seric ** trying to get it back in the child. 3029c9e68d9Seric */ 3039c9e68d9Seric 3049c9e68d9Seric if (e->e_lockfp != NULL) 3059c9e68d9Seric { 3069c9e68d9Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 3079c9e68d9Seric e->e_lockfp = NULL; 3089c9e68d9Seric } 3099c9e68d9Seric # endif /* LOCKF */ 3109c9e68d9Seric 3119c9e68d9Seric pid = fork(); 3129c9e68d9Seric if (pid < 0) 3139c9e68d9Seric { 3149c9e68d9Seric goto queueonly; 3159c9e68d9Seric } 3169c9e68d9Seric else if (pid > 0) 3179c9e68d9Seric { 3189c9e68d9Seric /* be sure we leave the temp files to our child */ 3199c9e68d9Seric e->e_id = e->e_df = NULL; 3209c9e68d9Seric # ifndef LOCKF 3219c9e68d9Seric if (e->e_lockfp != NULL) 3229c9e68d9Seric { 3239c9e68d9Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 3249c9e68d9Seric e->e_lockfp = NULL; 3259c9e68d9Seric } 3269c9e68d9Seric # endif 3279c9e68d9Seric 3289c9e68d9Seric /* close any random open files in the envelope */ 3299c9e68d9Seric if (e->e_dfp != NULL) 3309c9e68d9Seric { 3319c9e68d9Seric (void) xfclose(e->e_dfp, "sendenvelope", "dfp"); 3329c9e68d9Seric e->e_dfp = NULL; 3339c9e68d9Seric } 3349c9e68d9Seric if (e->e_xfp != NULL) 3359c9e68d9Seric { 3369c9e68d9Seric (void) xfclose(e->e_xfp, "sendenvelope", "xfp"); 3379c9e68d9Seric e->e_xfp = NULL; 3389c9e68d9Seric } 3399c9e68d9Seric return; 3409c9e68d9Seric } 3419c9e68d9Seric 3429c9e68d9Seric /* double fork to avoid zombies */ 3439c9e68d9Seric if (fork() > 0) 3449c9e68d9Seric exit(EX_OK); 3459c9e68d9Seric 3469c9e68d9Seric /* be sure we are immune from the terminal */ 3479c9e68d9Seric disconnect(FALSE, e); 3489c9e68d9Seric 3499c9e68d9Seric # ifdef LOCKF 3509c9e68d9Seric /* 3519c9e68d9Seric ** Now try to get our lock back. 3529c9e68d9Seric */ 3539c9e68d9Seric 3549c9e68d9Seric lfd.l_type = F_WRLCK; 3559c9e68d9Seric lfd.l_whence = lfd.l_start = lfd.l_len = 0; 3569c9e68d9Seric e->e_lockfp = fopen(queuename(e, 'q'), "r+"); 3579c9e68d9Seric if (e->e_lockfp == NULL || 3589c9e68d9Seric fcntl(fileno(e->e_lockfp), F_SETLK, &lfd) < 0) 3599c9e68d9Seric { 3609c9e68d9Seric /* oops.... lost it */ 3619c9e68d9Seric if (tTd(13, 1)) 3629c9e68d9Seric printf("sendenvelope: %s lost lock: lockfp=%x, %s\n", 3639c9e68d9Seric e->e_id, e->e_lockfp, errstring(errno)); 3649c9e68d9Seric 3659c9e68d9Seric # ifdef LOG 3669c9e68d9Seric if (LogLevel > 29) 3679c9e68d9Seric syslog(LOG_NOTICE, "%s: lost lock: %m", 3689c9e68d9Seric e->e_id); 3699c9e68d9Seric # endif /* LOG */ 3709c9e68d9Seric exit(EX_OK); 3719c9e68d9Seric } 3729c9e68d9Seric # endif /* LOCKF */ 3739c9e68d9Seric 3749c9e68d9Seric /* 3759c9e68d9Seric ** Close any cached connections. 3769c9e68d9Seric ** 3779c9e68d9Seric ** We don't send the QUIT protocol because the parent 3789c9e68d9Seric ** still knows about the connection. 3799c9e68d9Seric ** 3809c9e68d9Seric ** This should only happen when delivering an error 3819c9e68d9Seric ** message. 3829c9e68d9Seric */ 3839c9e68d9Seric 3849c9e68d9Seric mci_flush(FALSE, NULL); 3859c9e68d9Seric 3869c9e68d9Seric break; 3879c9e68d9Seric } 3889c9e68d9Seric 3899c9e68d9Seric /* 3909c9e68d9Seric ** Run through the list and send everything. 3919c9e68d9Seric */ 3929c9e68d9Seric 3939c9e68d9Seric e->e_nsent = 0; 3949c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 3959c9e68d9Seric { 3969c9e68d9Seric if (mode == SM_VERIFY) 3979c9e68d9Seric { 3989c9e68d9Seric e->e_to = q->q_paddr; 3999c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4009c9e68d9Seric message("deliverable"); 4019c9e68d9Seric } 4029c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4039c9e68d9Seric { 4049c9e68d9Seric # ifdef QUEUE 4059c9e68d9Seric /* 4069c9e68d9Seric ** Checkpoint the send list every few addresses 4079c9e68d9Seric */ 4089c9e68d9Seric 4099c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4109c9e68d9Seric { 4119c9e68d9Seric queueup(e, TRUE, FALSE); 4129c9e68d9Seric e->e_nsent = 0; 4139c9e68d9Seric } 4149c9e68d9Seric # endif /* QUEUE */ 4159c9e68d9Seric (void) deliver(e, q); 4169c9e68d9Seric } 4179c9e68d9Seric } 4189c9e68d9Seric Verbose = oldverbose; 4199c9e68d9Seric 4209c9e68d9Seric /* 4219c9e68d9Seric ** Now run through and check for errors. 4229c9e68d9Seric */ 4239c9e68d9Seric 4249c9e68d9Seric if (mode == SM_VERIFY) 4259c9e68d9Seric { 4269c9e68d9Seric return; 4279c9e68d9Seric } 4289c9e68d9Seric 4299c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4309c9e68d9Seric { 4319c9e68d9Seric if (tTd(13, 3)) 4329c9e68d9Seric { 4339c9e68d9Seric printf("Checking "); 4349c9e68d9Seric printaddr(q, FALSE); 4359c9e68d9Seric } 4369c9e68d9Seric 4379c9e68d9Seric /* only send errors if the message failed */ 4389c9e68d9Seric if (!bitset(QBADADDR, q->q_flags)) 4399c9e68d9Seric continue; 4409c9e68d9Seric 4419c9e68d9Seric e->e_flags |= EF_FATALERRS; 4429c9e68d9Seric 4439c9e68d9Seric if (q->q_owner == NULL && strcmp(e->e_from.q_paddr, "<>") != 0) 4449c9e68d9Seric (void) sendtolist(e->e_from.q_paddr, NULL, 4459c9e68d9Seric &e->e_errorqueue, e); 4469c9e68d9Seric } 4479c9e68d9Seric 4489c9e68d9Seric if (mode == SM_FORK) 4499c9e68d9Seric finis(); 4509c9e68d9Seric } 4519c9e68d9Seric /* 4529c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4539c9e68d9Seric ** 4549c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4559c9e68d9Seric ** two processes on the same stack!!! 4569c9e68d9Seric ** 4579c9e68d9Seric ** Parameters: 4589c9e68d9Seric ** none. 4599c9e68d9Seric ** 4609c9e68d9Seric ** Returns: 4619c9e68d9Seric ** From a macro??? You've got to be kidding! 4629c9e68d9Seric ** 4639c9e68d9Seric ** Side Effects: 4649c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4659c9e68d9Seric ** pid of child in parent, zero in child. 4669c9e68d9Seric ** -1 on unrecoverable error. 4679c9e68d9Seric ** 4689c9e68d9Seric ** Notes: 4699c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4709c9e68d9Seric ** vfork for you..... 4719c9e68d9Seric */ 4729c9e68d9Seric 4739c9e68d9Seric # define NFORKTRIES 5 4749c9e68d9Seric 4759c9e68d9Seric # ifndef FORK 4769c9e68d9Seric # define FORK fork 4779c9e68d9Seric # endif 4789c9e68d9Seric 4799c9e68d9Seric # define DOFORK(fORKfN) \ 4809c9e68d9Seric {\ 4819c9e68d9Seric register int i;\ 4829c9e68d9Seric \ 4839c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 4849c9e68d9Seric {\ 4859c9e68d9Seric pid = fORKfN();\ 4869c9e68d9Seric if (pid >= 0)\ 4879c9e68d9Seric break;\ 4889c9e68d9Seric if (i > 0)\ 4899c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 4909c9e68d9Seric }\ 4919c9e68d9Seric } 4929c9e68d9Seric /* 4939c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 4949c9e68d9Seric ** 4959c9e68d9Seric ** Parameters: 4969c9e68d9Seric ** none. 4979c9e68d9Seric ** 4989c9e68d9Seric ** Returns: 4999c9e68d9Seric ** pid of child in parent. 5009c9e68d9Seric ** zero in child. 5019c9e68d9Seric ** -1 on error. 5029c9e68d9Seric ** 5039c9e68d9Seric ** Side Effects: 5049c9e68d9Seric ** returns twice, once in parent and once in child. 5059c9e68d9Seric */ 5069c9e68d9Seric 5079c9e68d9Seric dofork() 5089c9e68d9Seric { 5099c9e68d9Seric register int pid; 5109c9e68d9Seric 5119c9e68d9Seric DOFORK(fork); 5129c9e68d9Seric return (pid); 5139c9e68d9Seric } 5149c9e68d9Seric /* 51513bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 51613bbc08cSeric ** 51713bbc08cSeric ** This routine delivers to everyone on the same host as the 51813bbc08cSeric ** user on the head of the list. It is clever about mailers 51913bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 52013bbc08cSeric ** that it will deliver to all these addresses however -- so 52113bbc08cSeric ** deliver should be called once for each address on the 52213bbc08cSeric ** list. 52325a99e2eSeric ** 52425a99e2eSeric ** Parameters: 525588cad61Seric ** e -- the envelope to deliver. 526c77d1c25Seric ** firstto -- head of the address list to deliver to. 52725a99e2eSeric ** 52825a99e2eSeric ** Returns: 52925a99e2eSeric ** zero -- successfully delivered. 53025a99e2eSeric ** else -- some failure, see ExitStat for more info. 53125a99e2eSeric ** 53225a99e2eSeric ** Side Effects: 53325a99e2eSeric ** The standard input is passed off to someone. 53425a99e2eSeric */ 53525a99e2eSeric 536588cad61Seric deliver(e, firstto) 537588cad61Seric register ENVELOPE *e; 538c77d1c25Seric ADDRESS *firstto; 53925a99e2eSeric { 54078442df3Seric char *host; /* host being sent to */ 54178442df3Seric char *user; /* user being sent to */ 54225a99e2eSeric char **pvp; 5435dfc646bSeric register char **mvp; 54425a99e2eSeric register char *p; 545588cad61Seric register MAILER *m; /* mailer for this recipient */ 5466259796dSeric ADDRESS *ctladdr; 547b31e7f2bSeric register MCI *mci; 548c77d1c25Seric register ADDRESS *to = firstto; 549c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 550772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 551911693bfSbostic int rcode; /* response code */ 552e103b48fSeric char *firstsig; /* signature of firstto */ 5539c9e68d9Seric int pid; 5549c9e68d9Seric char *curhost; 5559c9e68d9Seric int mpvect[2]; 5569c9e68d9Seric int rpvect[2]; 557ee6bf8dfSeric char *pv[MAXPV+1]; 558579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 559ee6bf8dfSeric char buf[MAXNAME]; 560c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 561fabb3bd4Seric extern int checkcompat(); 562ee6bf8dfSeric extern ADDRESS *getctladdr(); 563ee6bf8dfSeric extern char *remotename(); 564e103b48fSeric extern char *hostsignature(); 5659c9e68d9Seric extern FILE *fdopen(); 56625a99e2eSeric 56735490626Seric errno = 0; 568ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5695dfc646bSeric return (0); 57025a99e2eSeric 571134746fbSeric #ifdef NAMED_BIND 572912a731aSbostic /* unless interactive, try twice, over a minute */ 573912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 574912a731aSbostic _res.retrans = 30; 575912a731aSbostic _res.retry = 2; 576912a731aSbostic } 577d4bd8f0eSbostic #endif 578912a731aSbostic 57951552439Seric m = to->q_mailer; 58051552439Seric host = to->q_host; 581c9be6216Seric CurEnv = e; /* just in case */ 58251552439Seric 5836ef48975Seric if (tTd(10, 1)) 5845dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 58551552439Seric m->m_mno, host, to->q_user); 586f3dbc832Seric 587f3dbc832Seric /* 588f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 589f3dbc832Seric ** connections now, just mark these addresses and return. 590f3dbc832Seric ** This is useful if we want to batch connections to 591f3dbc832Seric ** reduce load. This will cause the messages to be 592f3dbc832Seric ** queued up, and a daemon will come along to send the 593f3dbc832Seric ** messages later. 594f3dbc832Seric ** This should be on a per-mailer basis. 595f3dbc832Seric */ 596f3dbc832Seric 59719c47125Seric if (NoConnect && !bitset(EF_QUEUERUN, e->e_flags) && 59819c47125Seric bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 599f3dbc832Seric { 600f3dbc832Seric for (; to != NULL; to = to->q_next) 601f4560e80Seric { 602ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 603c6e18ac5Seric to->q_mailer != m) 604f4560e80Seric continue; 605f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 606588cad61Seric e->e_to = to->q_paddr; 60708b25121Seric message("queued"); 6082f624c86Seric if (LogLevel > 8) 60981161401Seric logdelivery(m, NULL, "queued", e); 610f4560e80Seric } 611588cad61Seric e->e_to = NULL; 612f3dbc832Seric return (0); 613f3dbc832Seric } 614f3dbc832Seric 61525a99e2eSeric /* 6165dfc646bSeric ** Do initial argv setup. 6175dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6185dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6195dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6205dfc646bSeric ** code does not check for 'pv' overflow; this places a 6215dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6223bea8136Seric ** The from address rewrite is expected to make 6233bea8136Seric ** the address relative to the other end. 6245dfc646bSeric */ 6255dfc646bSeric 62678442df3Seric /* rewrite from address, using rewriting rules */ 627ee4b0922Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, TRUE, FALSE, 6289c69ca01Seric TRUE, FALSE, e)); 629ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 630588cad61Seric define('h', host, e); /* to host */ 6315dfc646bSeric Errors = 0; 6325dfc646bSeric pvp = pv; 6335dfc646bSeric *pvp++ = m->m_argv[0]; 6345dfc646bSeric 6355dfc646bSeric /* insert -f or -r flag as appropriate */ 63657fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6375dfc646bSeric { 63857fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6395dfc646bSeric *pvp++ = "-f"; 6405dfc646bSeric else 6415dfc646bSeric *pvp++ = "-r"; 642c23ed322Seric *pvp++ = newstr(rpathbuf); 6435dfc646bSeric } 6445dfc646bSeric 6455dfc646bSeric /* 6465dfc646bSeric ** Append the other fixed parts of the argv. These run 6475dfc646bSeric ** up to the first entry containing "$u". There can only 6485dfc646bSeric ** be one of these, and there are only a few more slots 6495dfc646bSeric ** in the pv after it. 6505dfc646bSeric */ 6515dfc646bSeric 6525dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6535dfc646bSeric { 6542bc47524Seric /* can't use strchr here because of sign extension problems */ 6552bc47524Seric while (*p != '\0') 6562bc47524Seric { 6572bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6582bc47524Seric { 6592bc47524Seric if (*p == 'u') 6605dfc646bSeric break; 6612bc47524Seric } 6622bc47524Seric } 6632bc47524Seric 6642bc47524Seric if (*p != '\0') 6655dfc646bSeric break; 6665dfc646bSeric 6675dfc646bSeric /* this entry is safe -- go ahead and process it */ 668588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6695dfc646bSeric *pvp++ = newstr(buf); 6705dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6715dfc646bSeric { 67208b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6735dfc646bSeric return (-1); 6745dfc646bSeric } 6755dfc646bSeric } 676c579ef51Seric 67733db8731Seric /* 67833db8731Seric ** If we have no substitution for the user name in the argument 67933db8731Seric ** list, we know that we must supply the names otherwise -- and 68033db8731Seric ** SMTP is the answer!! 68133db8731Seric */ 68233db8731Seric 6835dfc646bSeric if (*mvp == NULL) 684c579ef51Seric { 685c579ef51Seric /* running SMTP */ 6862c7e1b8dSeric # ifdef SMTP 687c579ef51Seric clever = TRUE; 688c579ef51Seric *pvp = NULL; 6896c2c3107Seric # else /* SMTP */ 69033db8731Seric /* oops! we don't implement SMTP */ 69108b25121Seric syserr("554 SMTP style mailer"); 6922c7e1b8dSeric return (EX_SOFTWARE); 6936c2c3107Seric # endif /* SMTP */ 694c579ef51Seric } 6955dfc646bSeric 6965dfc646bSeric /* 6975dfc646bSeric ** At this point *mvp points to the argument with $u. We 6985dfc646bSeric ** run through our address list and append all the addresses 6995dfc646bSeric ** we can. If we run out of space, do not fret! We can 7005dfc646bSeric ** always send another copy later. 7015dfc646bSeric */ 7025dfc646bSeric 7035dfc646bSeric tobuf[0] = '\0'; 704588cad61Seric e->e_to = tobuf; 7056259796dSeric ctladdr = NULL; 706e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7075dfc646bSeric for (; to != NULL; to = to->q_next) 7085dfc646bSeric { 7095dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 71057fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7115dfc646bSeric break; 7125dfc646bSeric 7135dfc646bSeric /* if already sent or not for this host, don't send */ 714ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 715e103b48fSeric to->q_mailer != firstto->q_mailer || 716e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7175dfc646bSeric continue; 7186259796dSeric 7194b22ea87Seric /* avoid overflowing tobuf */ 720aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7214b22ea87Seric break; 7224b22ea87Seric 7236ef48975Seric if (tTd(10, 1)) 724772e6e50Seric { 725772e6e50Seric printf("\nsend to "); 726772e6e50Seric printaddr(to, FALSE); 727772e6e50Seric } 728772e6e50Seric 7296259796dSeric /* compute effective uid/gid when sending */ 7307da1035fSeric if (to->q_mailer == ProgMailer) 7316259796dSeric ctladdr = getctladdr(to); 7326259796dSeric 7335dfc646bSeric user = to->q_user; 734588cad61Seric e->e_to = to->q_paddr; 73575f1ade9Seric if (tTd(10, 5)) 73675f1ade9Seric { 73775f1ade9Seric printf("deliver: QDONTSEND "); 73875f1ade9Seric printaddr(to, FALSE); 73975f1ade9Seric } 740ee4b0922Seric to->q_flags |= QDONTSEND; 7415dfc646bSeric 7425dfc646bSeric /* 7435dfc646bSeric ** Check to see that these people are allowed to 7445dfc646bSeric ** talk to each other. 7452a6e0786Seric */ 7462a6e0786Seric 74769582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 74869582d2fSeric { 74969582d2fSeric NoReturn = TRUE; 75008b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 75181161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 75269582d2fSeric continue; 75369582d2fSeric } 754fabb3bd4Seric rcode = checkcompat(to, e); 7551793c9c5Seric if (rcode != EX_OK) 7565dfc646bSeric { 75781161401Seric giveresponse(rcode, m, NULL, e); 7585dfc646bSeric continue; 7595dfc646bSeric } 7602a6e0786Seric 7612a6e0786Seric /* 7629ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7639ec9501bSeric ** about them. 76425a99e2eSeric */ 76525a99e2eSeric 76657fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 76725a99e2eSeric { 7681d8f1806Seric stripquotes(user); 7691d8f1806Seric stripquotes(host); 77025a99e2eSeric } 77125a99e2eSeric 772cdb828c5Seric /* hack attack -- delivermail compatibility */ 773cdb828c5Seric if (m == ProgMailer && *user == '|') 774cdb828c5Seric user++; 775cdb828c5Seric 77625a99e2eSeric /* 7773efaed6eSeric ** If an error message has already been given, don't 7783efaed6eSeric ** bother to send to this address. 7793efaed6eSeric ** 7803efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7813efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 7823efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 7833efaed6eSeric */ 7843efaed6eSeric 7856cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 7863efaed6eSeric continue; 7873efaed6eSeric 788f2fec898Seric /* save statistics.... */ 789588cad61Seric markstats(e, to); 790f2fec898Seric 7913efaed6eSeric /* 79225a99e2eSeric ** See if this user name is "special". 79325a99e2eSeric ** If the user name has a slash in it, assume that this 79451552439Seric ** is a file -- send it off without further ado. Note 79551552439Seric ** that this type of addresses is not processed along 79651552439Seric ** with the others, so we fudge on the To person. 79725a99e2eSeric */ 79825a99e2eSeric 7992c017f8dSeric if (m == FileMailer) 80025a99e2eSeric { 801b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 80281161401Seric giveresponse(rcode, m, NULL, e); 803dde5acadSeric if (rcode == EX_OK) 804dde5acadSeric to->q_flags |= QSENT; 8055dfc646bSeric continue; 80625a99e2eSeric } 80725a99e2eSeric 80813bbc08cSeric /* 80913bbc08cSeric ** Address is verified -- add this user to mailer 81013bbc08cSeric ** argv, and add it to the print list of recipients. 81113bbc08cSeric */ 81213bbc08cSeric 813508daeccSeric /* link together the chain of recipients */ 814508daeccSeric to->q_tchain = tochain; 815508daeccSeric tochain = to; 816508daeccSeric 8175dfc646bSeric /* create list of users for error messages */ 818db8841e9Seric (void) strcat(tobuf, ","); 819db8841e9Seric (void) strcat(tobuf, to->q_paddr); 820588cad61Seric define('u', user, e); /* to user */ 821588cad61Seric define('z', to->q_home, e); /* user's home */ 8225dfc646bSeric 823c579ef51Seric /* 824508daeccSeric ** Expand out this user into argument list. 825c579ef51Seric */ 826c579ef51Seric 827508daeccSeric if (!clever) 828c579ef51Seric { 829588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8305dfc646bSeric *pvp++ = newstr(buf); 8315dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8325dfc646bSeric { 8335dfc646bSeric /* allow some space for trailing parms */ 8345dfc646bSeric break; 8355dfc646bSeric } 8365dfc646bSeric } 837c579ef51Seric } 8385dfc646bSeric 839145b49b1Seric /* see if any addresses still exist */ 840145b49b1Seric if (tobuf[0] == '\0') 841c579ef51Seric { 842588cad61Seric define('g', (char *) NULL, e); 843145b49b1Seric return (0); 844c579ef51Seric } 845145b49b1Seric 8465dfc646bSeric /* print out messages as full list */ 84763780dbdSeric e->e_to = tobuf + 1; 8485dfc646bSeric 8495dfc646bSeric /* 8505dfc646bSeric ** Fill out any parameters after the $u parameter. 8515dfc646bSeric */ 8525dfc646bSeric 853c579ef51Seric while (!clever && *++mvp != NULL) 8545dfc646bSeric { 855588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8565dfc646bSeric *pvp++ = newstr(buf); 8575dfc646bSeric if (pvp >= &pv[MAXPV]) 85808b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8595dfc646bSeric } 8605dfc646bSeric *pvp++ = NULL; 8615dfc646bSeric 86225a99e2eSeric /* 86325a99e2eSeric ** Call the mailer. 8646328bdf7Seric ** The argument vector gets built, pipes 86525a99e2eSeric ** are created as necessary, and we fork & exec as 8666328bdf7Seric ** appropriate. 867c579ef51Seric ** If we are running SMTP, we just need to clean up. 86825a99e2eSeric */ 86925a99e2eSeric 8707ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 87186b26461Seric ctladdr = &e->e_from; 872134746fbSeric #ifdef NAMED_BIND 8732bcc6d2dSeric if (ConfigLevel < 2) 874912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 875134746fbSeric #endif 8769c9e68d9Seric 8779c9e68d9Seric if (tTd(11, 1)) 878134746fbSeric { 8799c9e68d9Seric printf("openmailer:"); 8809c9e68d9Seric printav(pv); 8819c9e68d9Seric } 8829c9e68d9Seric errno = 0; 8839c9e68d9Seric 8849c9e68d9Seric CurHostName = m->m_mailer; 8859c9e68d9Seric 8869c9e68d9Seric /* 8879c9e68d9Seric ** Deal with the special case of mail handled through an IPC 8889c9e68d9Seric ** connection. 8899c9e68d9Seric ** In this case we don't actually fork. We must be 8909c9e68d9Seric ** running SMTP for this to work. We will return a 8919c9e68d9Seric ** zero pid to indicate that we are running IPC. 8929c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 8939c9e68d9Seric */ 8949c9e68d9Seric 8959c9e68d9Seric curhost = NULL; 8969c9e68d9Seric 8979c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 8989c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 8999c9e68d9Seric { 9009c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9019c9e68d9Seric bzero((char *) mci, sizeof *mci); 9029c9e68d9Seric mci->mci_in = stdin; 9039c9e68d9Seric mci->mci_out = stdout; 9049c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9059c9e68d9Seric mci->mci_mailer = m; 9069c9e68d9Seric } 9079c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9089c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9099c9e68d9Seric { 9109c9e68d9Seric #ifdef DAEMON 9119c9e68d9Seric register int i; 9129c9e68d9Seric register u_short port; 9139c9e68d9Seric extern MCI *mci_get(); 9149c9e68d9Seric extern char *hostsignature(); 9159c9e68d9Seric 9169c9e68d9Seric CurHostName = pv[1]; 9179c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9189c9e68d9Seric 9199c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9209c9e68d9Seric { 9219c9e68d9Seric syserr("null signature"); 922845e533cSeric rcode = EX_OSERR; 923b31e7f2bSeric goto give_up; 924b31e7f2bSeric } 9259c9e68d9Seric 9269c9e68d9Seric if (!clever) 9279c9e68d9Seric { 9289c9e68d9Seric syserr("554 non-clever IPC"); 9299c9e68d9Seric rcode = EX_OSERR; 9309c9e68d9Seric goto give_up; 9319c9e68d9Seric } 9329c9e68d9Seric if (pv[2] != NULL) 9339c9e68d9Seric port = atoi(pv[2]); 9349c9e68d9Seric else 9359c9e68d9Seric port = 0; 9369c9e68d9Seric tryhost: 9379c9e68d9Seric mci = NULL; 9389c9e68d9Seric while (*curhost != '\0') 9399c9e68d9Seric { 9409c9e68d9Seric register char *p; 9419c9e68d9Seric static char hostbuf[MAXNAME]; 9429c9e68d9Seric 9439c9e68d9Seric mci = NULL; 9449c9e68d9Seric 9459c9e68d9Seric /* pull the next host from the signature */ 9469c9e68d9Seric p = strchr(curhost, ':'); 9479c9e68d9Seric if (p == NULL) 9489c9e68d9Seric p = &curhost[strlen(curhost)]; 9499c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9509c9e68d9Seric hostbuf[p - curhost] = '\0'; 9519c9e68d9Seric if (*p != '\0') 9529c9e68d9Seric p++; 9539c9e68d9Seric curhost = p; 9549c9e68d9Seric 9559c9e68d9Seric /* see if we already know that this host is fried */ 9569c9e68d9Seric CurHostName = hostbuf; 9579c9e68d9Seric mci = mci_get(hostbuf, m); 9589c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9599c9e68d9Seric { 9609c9e68d9Seric if (tTd(11, 1)) 9619c9e68d9Seric { 9629c9e68d9Seric printf("openmailer: "); 9639c9e68d9Seric mci_dump(mci); 9649c9e68d9Seric } 9659c9e68d9Seric CurHostName = mci->mci_host; 9669c9e68d9Seric break; 9679c9e68d9Seric } 9689c9e68d9Seric mci->mci_mailer = m; 9699c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9709c9e68d9Seric continue; 9719c9e68d9Seric 9729c9e68d9Seric /* try the connection */ 9739c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9749c9e68d9Seric message("Connecting to %s (%s)...", 9759c9e68d9Seric hostbuf, m->m_name); 9769c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9779c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9789c9e68d9Seric mci->mci_exitstat = i; 9799c9e68d9Seric mci->mci_errno = errno; 9809c9e68d9Seric if (i == EX_OK) 9819c9e68d9Seric { 9829c9e68d9Seric mci->mci_state = MCIS_OPENING; 9839c9e68d9Seric mci_cache(mci); 9849c9e68d9Seric break; 9859c9e68d9Seric } 9869c9e68d9Seric else if (tTd(11, 1)) 9879c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 9889c9e68d9Seric i, errno); 9899c9e68d9Seric 9909c9e68d9Seric 9919c9e68d9Seric /* enter status of this host */ 9929c9e68d9Seric setstat(i); 9939c9e68d9Seric } 9949c9e68d9Seric mci->mci_pid = 0; 9959c9e68d9Seric #else /* no DAEMON */ 9969c9e68d9Seric syserr("554 openmailer: no IPC"); 9979c9e68d9Seric if (tTd(11, 1)) 9989c9e68d9Seric printf("openmailer: NULL\n"); 9999c9e68d9Seric return NULL; 10009c9e68d9Seric #endif /* DAEMON */ 10019c9e68d9Seric } 10029c9e68d9Seric else 10039c9e68d9Seric { 1004*6fe8c3bcSeric int i; 1005*6fe8c3bcSeric struct stat stbuf; 1006*6fe8c3bcSeric 1007*6fe8c3bcSeric /* make absolutely certain 0, 1, and 2 are in use */ 1008*6fe8c3bcSeric for (i = 0; i < 3; i++) 1009*6fe8c3bcSeric { 1010*6fe8c3bcSeric if (fstat(i, &stbuf) < 0) 1011*6fe8c3bcSeric { 1012*6fe8c3bcSeric /* oops.... */ 1013*6fe8c3bcSeric syserr("openmailer: fd %d not open", i); 1014*6fe8c3bcSeric (void) open("/dev/null", O_RDONLY, 0666); 1015*6fe8c3bcSeric } 1016*6fe8c3bcSeric } 1017*6fe8c3bcSeric 10189c9e68d9Seric /* create a pipe to shove the mail through */ 10199c9e68d9Seric if (pipe(mpvect) < 0) 10209c9e68d9Seric { 10219c9e68d9Seric syserr("openmailer: pipe (to mailer)"); 10229c9e68d9Seric if (tTd(11, 1)) 10239c9e68d9Seric printf("openmailer: NULL\n"); 10249c9e68d9Seric rcode = EX_OSERR; 10259c9e68d9Seric goto give_up; 10269c9e68d9Seric } 10279c9e68d9Seric 10289c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10299c9e68d9Seric if (clever && pipe(rpvect) < 0) 10309c9e68d9Seric { 10319c9e68d9Seric syserr("openmailer: pipe (from mailer)"); 10329c9e68d9Seric (void) close(mpvect[0]); 10339c9e68d9Seric (void) close(mpvect[1]); 10349c9e68d9Seric if (tTd(11, 1)) 10359c9e68d9Seric printf("openmailer: NULL\n"); 10369c9e68d9Seric rcode = EX_OSERR; 10379c9e68d9Seric goto give_up; 10389c9e68d9Seric } 10399c9e68d9Seric 10409c9e68d9Seric /* 10419c9e68d9Seric ** Actually fork the mailer process. 10429c9e68d9Seric ** DOFORK is clever about retrying. 10439c9e68d9Seric ** 10449c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10459c9e68d9Seric ** around so that endmail will get it. 10469c9e68d9Seric */ 10479c9e68d9Seric 10489c9e68d9Seric if (e->e_xfp != NULL) 10499c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10509c9e68d9Seric (void) fflush(stdout); 10519c9e68d9Seric # ifdef SIGCHLD 10529c9e68d9Seric (void) signal(SIGCHLD, SIG_DFL); 10539c9e68d9Seric # endif /* SIGCHLD */ 10549c9e68d9Seric DOFORK(FORK); 10559c9e68d9Seric /* pid is set by DOFORK */ 10569c9e68d9Seric if (pid < 0) 10579c9e68d9Seric { 10589c9e68d9Seric /* failure */ 10599c9e68d9Seric syserr("openmailer: cannot fork"); 10609c9e68d9Seric (void) close(mpvect[0]); 10619c9e68d9Seric (void) close(mpvect[1]); 10629c9e68d9Seric if (clever) 10639c9e68d9Seric { 10649c9e68d9Seric (void) close(rpvect[0]); 10659c9e68d9Seric (void) close(rpvect[1]); 10669c9e68d9Seric } 10679c9e68d9Seric if (tTd(11, 1)) 10689c9e68d9Seric printf("openmailer: NULL\n"); 10699c9e68d9Seric rcode = EX_OSERR; 10709c9e68d9Seric goto give_up; 10719c9e68d9Seric } 10729c9e68d9Seric else if (pid == 0) 10739c9e68d9Seric { 10749c9e68d9Seric int i; 10759c9e68d9Seric int saveerrno; 10769c9e68d9Seric char **ep; 10779c9e68d9Seric char *env[MAXUSERENVIRON]; 10789c9e68d9Seric extern char **environ; 10799c9e68d9Seric extern int DtableSize; 10809c9e68d9Seric 10819c9e68d9Seric /* child -- set up input & exec mailer */ 10829c9e68d9Seric /* make diagnostic output be standard output */ 10839c9e68d9Seric (void) signal(SIGINT, SIG_IGN); 10849c9e68d9Seric (void) signal(SIGHUP, SIG_IGN); 10859c9e68d9Seric (void) signal(SIGTERM, SIG_DFL); 10869c9e68d9Seric 10879c9e68d9Seric /* close any other cached connections */ 10889c9e68d9Seric mci_flush(FALSE, mci); 10899c9e68d9Seric 10909c9e68d9Seric /* arrange to filter std & diag output of command */ 10919c9e68d9Seric if (clever) 10929c9e68d9Seric { 10939c9e68d9Seric (void) close(rpvect[0]); 1094*6fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 1095*6fe8c3bcSeric { 1096*6fe8c3bcSeric syserr("Cannot dup pipe %d for stdout", 1097*6fe8c3bcSeric rpvect[1]); 1098*6fe8c3bcSeric _exit(EX_OSERR); 1099*6fe8c3bcSeric } 11009c9e68d9Seric (void) close(rpvect[1]); 11019c9e68d9Seric } 11029c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11039c9e68d9Seric { 11049c9e68d9Seric /* put mailer output in transcript */ 1105*6fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 1106*6fe8c3bcSeric { 1107*6fe8c3bcSeric syserr("Cannot dup xscript %d for stdout", 1108*6fe8c3bcSeric fileno(e->e_xfp)); 1109*6fe8c3bcSeric _exit(EX_OSERR); 11109c9e68d9Seric } 1111*6fe8c3bcSeric } 1112*6fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 1113*6fe8c3bcSeric { 1114*6fe8c3bcSeric syserr("Cannot dup stdout for stderr"); 1115*6fe8c3bcSeric _exit(EX_OSERR); 1116*6fe8c3bcSeric } 11179c9e68d9Seric 11189c9e68d9Seric /* arrange to get standard input */ 11199c9e68d9Seric (void) close(mpvect[1]); 11209c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11219c9e68d9Seric { 1122*6fe8c3bcSeric syserr("Cannot dup pipe %d for stdin", 1123*6fe8c3bcSeric mpvect[0]); 11249c9e68d9Seric _exit(EX_OSERR); 11259c9e68d9Seric } 11269c9e68d9Seric (void) close(mpvect[0]); 11279c9e68d9Seric if (!bitnset(M_RESTR, m->m_flags)) 11289c9e68d9Seric { 11299c9e68d9Seric if (ctladdr == NULL || ctladdr->q_uid == 0) 11309c9e68d9Seric { 11319c9e68d9Seric (void) setgid(DefGid); 11329c9e68d9Seric (void) initgroups(DefUser, DefGid); 11339c9e68d9Seric (void) setuid(DefUid); 11349c9e68d9Seric } 11359c9e68d9Seric else 11369c9e68d9Seric { 11379c9e68d9Seric (void) setgid(ctladdr->q_gid); 11389c9e68d9Seric (void) initgroups(ctladdr->q_ruser? 11399c9e68d9Seric ctladdr->q_ruser: ctladdr->q_user, 11409c9e68d9Seric ctladdr->q_gid); 11419c9e68d9Seric (void) setuid(ctladdr->q_uid); 11429c9e68d9Seric } 11439c9e68d9Seric } 11449c9e68d9Seric 11459c9e68d9Seric /* arrange for all the files to be closed */ 11469c9e68d9Seric for (i = 3; i < DtableSize; i++) 11479c9e68d9Seric { 11489c9e68d9Seric register int j; 11499c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 11509c9e68d9Seric (void)fcntl(i, F_SETFD, j|1); 11519c9e68d9Seric } 11529c9e68d9Seric 11539c9e68d9Seric /* set up the mailer environment */ 11549c9e68d9Seric i = 0; 11559c9e68d9Seric env[i++] = "AGENT=sendmail"; 11569c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 11579c9e68d9Seric { 11589c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 11599c9e68d9Seric env[i++] = *ep; 11609c9e68d9Seric } 11619c9e68d9Seric env[i++] = NULL; 11629c9e68d9Seric 11639c9e68d9Seric /* try to execute the mailer */ 11649c9e68d9Seric execve(m->m_mailer, pv, env); 11659c9e68d9Seric saveerrno = errno; 11669c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 11679c9e68d9Seric if (m == LocalMailer) 11689c9e68d9Seric _exit(EX_TEMPFAIL); 11699c9e68d9Seric if (transienterror(saveerrno)) 11709c9e68d9Seric _exit(EX_TEMPFAIL); 11719c9e68d9Seric _exit(EX_UNAVAILABLE); 11729c9e68d9Seric } 11739c9e68d9Seric 11749c9e68d9Seric /* 11759c9e68d9Seric ** Set up return value. 11769c9e68d9Seric */ 11779c9e68d9Seric 11789c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 11799c9e68d9Seric bzero((char *) mci, sizeof *mci); 11809c9e68d9Seric mci->mci_mailer = m; 11819c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 11829c9e68d9Seric mci->mci_pid = pid; 11839c9e68d9Seric (void) close(mpvect[0]); 11849c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 11859c9e68d9Seric if (clever) 11869c9e68d9Seric { 11879c9e68d9Seric (void) close(rpvect[1]); 11889c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 11899c9e68d9Seric } 11909c9e68d9Seric else 11919c9e68d9Seric { 11929c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 11939c9e68d9Seric mci->mci_in = NULL; 11949c9e68d9Seric } 11959c9e68d9Seric } 11969c9e68d9Seric 11979c9e68d9Seric /* 11989c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 11999c9e68d9Seric */ 12009c9e68d9Seric 12019c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12029c9e68d9Seric { 12039c9e68d9Seric smtpinit(m, mci, e); 12049c9e68d9Seric } 12059c9e68d9Seric if (tTd(11, 1)) 12069c9e68d9Seric { 12079c9e68d9Seric printf("openmailer: "); 12089c9e68d9Seric mci_dump(mci); 12099c9e68d9Seric } 12109c9e68d9Seric 12119c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1212b31e7f2bSeric { 1213b31e7f2bSeric /* couldn't open the mailer */ 1214b31e7f2bSeric rcode = mci->mci_exitstat; 12152a6bc25bSeric errno = mci->mci_errno; 1216b31e7f2bSeric if (rcode == EX_OK) 1217b31e7f2bSeric { 1218b31e7f2bSeric /* shouldn't happen */ 121908b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12206b0f339dSeric rcode, mci->mci_state, firstsig); 1221b31e7f2bSeric rcode = EX_SOFTWARE; 1222b31e7f2bSeric } 1223b31e7f2bSeric } 1224b31e7f2bSeric else if (!clever) 1225b31e7f2bSeric { 1226b31e7f2bSeric /* 1227b31e7f2bSeric ** Format and send message. 1228b31e7f2bSeric */ 122915d084d5Seric 1230b31e7f2bSeric putfromline(mci->mci_out, m, e); 1231b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1232b31e7f2bSeric putline("\n", mci->mci_out, m); 1233b31e7f2bSeric (*e->e_putbody)(mci->mci_out, m, e); 1234b31e7f2bSeric 1235b31e7f2bSeric /* get the exit status */ 1236c9be6216Seric rcode = endmailer(mci, e, pv); 1237134746fbSeric } 1238134746fbSeric else 1239b31e7f2bSeric #ifdef SMTP 1240134746fbSeric { 1241b31e7f2bSeric /* 1242b31e7f2bSeric ** Send the MAIL FROM: protocol 1243b31e7f2bSeric */ 124415d084d5Seric 1245b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1246b31e7f2bSeric if (rcode == EX_OK) 124775889e88Seric { 1248ded0d3daSkarels register char *t = tobuf; 1249ded0d3daSkarels register int i; 1250ded0d3daSkarels 1251588cad61Seric /* send the recipient list */ 125263780dbdSeric tobuf[0] = '\0'; 125375889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 125475889e88Seric { 125563780dbdSeric e->e_to = to->q_paddr; 125615d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 125775889e88Seric { 125883b7ddc9Seric markfailure(e, to, i); 125981161401Seric giveresponse(i, m, mci, e); 126063780dbdSeric } 126175889e88Seric else 126275889e88Seric { 1263911693bfSbostic *t++ = ','; 1264b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1265b31e7f2bSeric continue; 1266588cad61Seric } 1267588cad61Seric } 1268588cad61Seric 126963780dbdSeric /* now send the data */ 127063780dbdSeric if (tobuf[0] == '\0') 1271b31e7f2bSeric { 12729c9e68d9Seric rcode = EX_OK; 127363780dbdSeric e->e_to = NULL; 1274b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1275b31e7f2bSeric smtprset(m, mci, e); 1276b31e7f2bSeric } 127775889e88Seric else 127875889e88Seric { 127963780dbdSeric e->e_to = tobuf + 1; 128075889e88Seric rcode = smtpdata(m, mci, e); 128163780dbdSeric } 128263780dbdSeric 128363780dbdSeric /* now close the connection */ 1284b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 128515d084d5Seric smtpquit(m, mci, e); 128663780dbdSeric } 12879c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 12889c9e68d9Seric { 12899c9e68d9Seric /* try next MX site */ 12909c9e68d9Seric goto tryhost; 12919c9e68d9Seric } 1292c579ef51Seric } 1293b31e7f2bSeric #else /* not SMTP */ 1294a05b3449Sbostic { 129508b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1296845e533cSeric rcode = EX_CONFIG; 1297b31e7f2bSeric goto give_up; 1298a05b3449Sbostic } 1299b31e7f2bSeric #endif /* SMTP */ 1300134746fbSeric #ifdef NAMED_BIND 13012bcc6d2dSeric if (ConfigLevel < 2) 1302912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1303134746fbSeric #endif 13045dfc646bSeric 1305b31e7f2bSeric /* arrange a return receipt if requested */ 13068c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1307b31e7f2bSeric { 1308b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1309b31e7f2bSeric /* do we want to send back more info? */ 1310b31e7f2bSeric } 1311b31e7f2bSeric 1312c77d1c25Seric /* 131363780dbdSeric ** Do final status disposal. 131463780dbdSeric ** We check for something in tobuf for the SMTP case. 1315c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1316c77d1c25Seric ** addressees. 1317c77d1c25Seric */ 1318c77d1c25Seric 1319b31e7f2bSeric give_up: 132063780dbdSeric if (tobuf[0] != '\0') 132181161401Seric giveresponse(rcode, m, mci, e); 1322772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1323b31e7f2bSeric { 1324dde5acadSeric if (rcode != EX_OK) 132583b7ddc9Seric markfailure(e, to, rcode); 1326dde5acadSeric else 1327655518ecSeric { 1328dde5acadSeric to->q_flags |= QSENT; 1329655518ecSeric e->e_nsent++; 1330655518ecSeric } 1331b31e7f2bSeric } 1332b31e7f2bSeric 1333b31e7f2bSeric /* 1334b31e7f2bSeric ** Restore state and return. 1335b31e7f2bSeric */ 1336c77d1c25Seric 133735490626Seric errno = 0; 1338588cad61Seric define('g', (char *) NULL, e); 13395826d9d3Seric return (rcode); 134025a99e2eSeric } 13415dfc646bSeric /* 134283b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 134383b7ddc9Seric ** 134483b7ddc9Seric ** Parameters: 134583b7ddc9Seric ** e -- the envelope we are sending. 134683b7ddc9Seric ** q -- the address to mark. 134783b7ddc9Seric ** rcode -- the code signifying the particular failure. 134883b7ddc9Seric ** 134983b7ddc9Seric ** Returns: 135083b7ddc9Seric ** none. 135183b7ddc9Seric ** 135283b7ddc9Seric ** Side Effects: 135383b7ddc9Seric ** marks the address (and possibly the envelope) with the 135483b7ddc9Seric ** failure so that an error will be returned or 135583b7ddc9Seric ** the message will be queued, as appropriate. 135683b7ddc9Seric */ 135783b7ddc9Seric 135883b7ddc9Seric markfailure(e, q, rcode) 135983b7ddc9Seric register ENVELOPE *e; 136083b7ddc9Seric register ADDRESS *q; 136183b7ddc9Seric int rcode; 136283b7ddc9Seric { 136319c47125Seric char buf[MAXLINE]; 136419c47125Seric extern char *pintvl(); 136519c47125Seric 136683b7ddc9Seric if (rcode == EX_OK) 136783b7ddc9Seric return; 1368ef137175Sbostic else if (rcode != EX_TEMPFAIL && rcode != EX_IOERR && rcode != EX_OSERR) 136983b7ddc9Seric q->q_flags |= QBADADDR; 137019c47125Seric else if (curtime() > e->e_ctime + TimeOuts.to_q_return) 137183b7ddc9Seric { 137283b7ddc9Seric if (!bitset(EF_TIMEOUT, e->e_flags)) 1373198d9be0Seric { 1374198d9be0Seric (void) sprintf(buf, "Cannot send message for %s", 137519c47125Seric pintvl(TimeOuts.to_q_return, FALSE)); 1376198d9be0Seric if (e->e_message != NULL) 1377198d9be0Seric free(e->e_message); 1378198d9be0Seric e->e_message = newstr(buf); 137908b25121Seric message(buf); 1380198d9be0Seric } 138183b7ddc9Seric q->q_flags |= QBADADDR; 138283b7ddc9Seric e->e_flags |= EF_TIMEOUT; 1383c13b5dfcSeric fprintf(e->e_xfp, "421 %s... Message timed out\n", q->q_paddr); 138483b7ddc9Seric } 138583b7ddc9Seric else 138619c47125Seric { 138783b7ddc9Seric q->q_flags |= QQUEUEUP; 138819c47125Seric if (TimeOuts.to_q_warning > 0 && 138919c47125Seric curtime() > e->e_ctime + TimeOuts.to_q_warning) 139019c47125Seric { 139119c47125Seric if (!bitset(EF_WARNING, e->e_flags) && 139219c47125Seric e->e_class >= 0) 139319c47125Seric { 139419c47125Seric (void) sprintf(buf, 139519c47125Seric "warning: cannot send message for %s", 139619c47125Seric pintvl(TimeOuts.to_q_warning, FALSE)); 139719c47125Seric if (e->e_message != NULL) 139819c47125Seric free(e->e_message); 139919c47125Seric e->e_message = newstr(buf); 140019c47125Seric message(buf); 140119c47125Seric e->e_flags |= EF_WARNING|EF_TIMEOUT; 140219c47125Seric } 140319c47125Seric fprintf(e->e_xfp, 140419c47125Seric "%s... Warning: message still undelivered after %s\n", 140519c47125Seric q->q_paddr, pintvl(TimeOuts.to_q_warning, FALSE)); 140619c47125Seric fprintf(e->e_xfp, "Will keep trying until message is %s old\n", 140719c47125Seric pintvl(TimeOuts.to_q_return, FALSE)); 140819c47125Seric } 140919c47125Seric } 141083b7ddc9Seric } 141183b7ddc9Seric /* 1412c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1413c579ef51Seric ** 1414c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1415c579ef51Seric ** violation), so we report those specially. For other 1416c579ef51Seric ** errors, we choose a status message (into statmsg), 1417c579ef51Seric ** and if it represents an error, we print it. 1418c579ef51Seric ** 1419c579ef51Seric ** Parameters: 1420c579ef51Seric ** pid -- pid of mailer. 1421c9be6216Seric ** e -- the current envelope. 1422c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1423c9be6216Seric ** (for error messages). 1424c579ef51Seric ** 1425c579ef51Seric ** Returns: 1426c579ef51Seric ** exit code of mailer. 1427c579ef51Seric ** 1428c579ef51Seric ** Side Effects: 1429c579ef51Seric ** none. 1430c579ef51Seric */ 1431c579ef51Seric 1432c9be6216Seric endmailer(mci, e, pv) 1433b31e7f2bSeric register MCI *mci; 1434c9be6216Seric register ENVELOPE *e; 1435c9be6216Seric char **pv; 1436c579ef51Seric { 1437588cad61Seric int st; 1438c579ef51Seric 143975889e88Seric /* close any connections */ 144075889e88Seric if (mci->mci_in != NULL) 1441c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 144275889e88Seric if (mci->mci_out != NULL) 1443c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 144475889e88Seric mci->mci_in = mci->mci_out = NULL; 144575889e88Seric mci->mci_state = MCIS_CLOSED; 144675889e88Seric 144733db8731Seric /* in the IPC case there is nothing to wait for */ 144875889e88Seric if (mci->mci_pid == 0) 144933db8731Seric return (EX_OK); 145033db8731Seric 145133db8731Seric /* wait for the mailer process to die and collect status */ 145275889e88Seric st = waitfor(mci->mci_pid); 1453588cad61Seric if (st == -1) 145478de67c1Seric { 1455c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1456588cad61Seric return (EX_SOFTWARE); 1457c579ef51Seric } 145833db8731Seric 145933db8731Seric /* see if it died a horrid death */ 1460c579ef51Seric if ((st & 0377) != 0) 1461c579ef51Seric { 1462c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1463c9be6216Seric 1464c9be6216Seric /* log the arguments */ 1465c9be6216Seric if (e->e_xfp != NULL) 1466c9be6216Seric { 1467c9be6216Seric register char **av; 1468c9be6216Seric 1469c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1470c9be6216Seric for (av = pv; *av != NULL; av++) 1471c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1472c9be6216Seric fprintf(e->e_xfp, "\n"); 1473c9be6216Seric } 1474c9be6216Seric 14755f73204aSeric ExitStat = EX_TEMPFAIL; 14765f73204aSeric return (EX_TEMPFAIL); 1477c579ef51Seric } 147833db8731Seric 147933db8731Seric /* normal death -- return status */ 1480588cad61Seric st = (st >> 8) & 0377; 1481588cad61Seric return (st); 1482c579ef51Seric } 1483c579ef51Seric /* 148425a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 148525a99e2eSeric ** 148625a99e2eSeric ** Parameters: 148725a99e2eSeric ** stat -- the status code from the mailer (high byte 148825a99e2eSeric ** only; core dumps must have been taken care of 148925a99e2eSeric ** already). 149081161401Seric ** m -- the mailer info for this mailer. 149181161401Seric ** mci -- the mailer connection info -- can be NULL if the 149281161401Seric ** response is given before the connection is made. 149381161401Seric ** e -- the current envelope. 149425a99e2eSeric ** 149525a99e2eSeric ** Returns: 1496db8841e9Seric ** none. 149725a99e2eSeric ** 149825a99e2eSeric ** Side Effects: 1499c1f9df2cSeric ** Errors may be incremented. 150025a99e2eSeric ** ExitStat may be set. 150125a99e2eSeric */ 150225a99e2eSeric 150381161401Seric giveresponse(stat, m, mci, e) 150425a99e2eSeric int stat; 1505588cad61Seric register MAILER *m; 150681161401Seric register MCI *mci; 1507198d9be0Seric ENVELOPE *e; 150825a99e2eSeric { 150925a99e2eSeric register char *statmsg; 151025a99e2eSeric extern char *SysExMsg[]; 151125a99e2eSeric register int i; 1512d4bd8f0eSbostic extern int N_SysEx; 1513d4bd8f0eSbostic #ifdef NAMED_BIND 1514d4bd8f0eSbostic extern int h_errno; 1515d4bd8f0eSbostic #endif 1516198d9be0Seric char buf[MAXLINE]; 15177d55540cSeric extern char *errstring(); 151825a99e2eSeric 151913bbc08cSeric /* 152013bbc08cSeric ** Compute status message from code. 152113bbc08cSeric */ 152213bbc08cSeric 152325a99e2eSeric i = stat - EX__BASE; 1524588cad61Seric if (stat == 0) 1525*6fe8c3bcSeric { 1526588cad61Seric statmsg = "250 Sent"; 1527*6fe8c3bcSeric if (e->e_message != NULL) 1528*6fe8c3bcSeric { 1529*6fe8c3bcSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_message); 1530*6fe8c3bcSeric statmsg = buf; 1531*6fe8c3bcSeric } 1532*6fe8c3bcSeric } 1533588cad61Seric else if (i < 0 || i > N_SysEx) 1534588cad61Seric { 1535588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1536588cad61Seric stat = EX_UNAVAILABLE; 1537588cad61Seric statmsg = buf; 1538588cad61Seric } 1539198d9be0Seric else if (stat == EX_TEMPFAIL) 1540198d9be0Seric { 15417d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1542d4bd8f0eSbostic #ifdef NAMED_BIND 1543f28da541Smiriam if (h_errno == TRY_AGAIN) 1544f28da541Smiriam statmsg = errstring(h_errno+MAX_ERRNO); 1545f28da541Smiriam else 1546d4bd8f0eSbostic #endif 1547f28da541Smiriam { 15488557d168Seric if (errno != 0) 1549d87e85f3Seric statmsg = errstring(errno); 1550d87e85f3Seric else 1551d87e85f3Seric { 1552d87e85f3Seric #ifdef SMTP 1553d87e85f3Seric extern char SmtpError[]; 1554d87e85f3Seric 1555d87e85f3Seric statmsg = SmtpError; 15566c2c3107Seric #else /* SMTP */ 1557d87e85f3Seric statmsg = NULL; 15586c2c3107Seric #endif /* SMTP */ 1559d87e85f3Seric } 1560f28da541Smiriam } 1561d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1562d87e85f3Seric { 156387c9b3e7Seric (void) strcat(buf, ": "); 1564d87e85f3Seric (void) strcat(buf, statmsg); 15658557d168Seric } 1566198d9be0Seric statmsg = buf; 1567198d9be0Seric } 156825a99e2eSeric else 1569d87e85f3Seric { 157025a99e2eSeric statmsg = SysExMsg[i]; 15717d55540cSeric if (*statmsg++ == ':') 15727d55540cSeric { 15737d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 15747d55540cSeric statmsg = buf; 15757d55540cSeric } 1576d87e85f3Seric } 1577588cad61Seric 1578588cad61Seric /* 1579588cad61Seric ** Print the message as appropriate 1580588cad61Seric */ 1581588cad61Seric 1582198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1583e12d03eeSeric message(&statmsg[4], errstring(errno)); 158425a99e2eSeric else 158525a99e2eSeric { 1586c1f9df2cSeric Errors++; 1587e12d03eeSeric usrerr(statmsg, errstring(errno)); 158825a99e2eSeric } 158925a99e2eSeric 159025a99e2eSeric /* 159125a99e2eSeric ** Final cleanup. 159225a99e2eSeric ** Log a record of the transaction. Compute the new 159325a99e2eSeric ** ExitStat -- if we already had an error, stick with 159425a99e2eSeric ** that. 159525a99e2eSeric */ 159625a99e2eSeric 15972f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 159881161401Seric logdelivery(m, mci, &statmsg[4], e); 1599eb238f8cSeric 1600eb238f8cSeric if (stat != EX_TEMPFAIL) 1601eb238f8cSeric setstat(stat); 1602198d9be0Seric if (stat != EX_OK) 1603198d9be0Seric { 1604198d9be0Seric if (e->e_message != NULL) 1605198d9be0Seric free(e->e_message); 1606198d9be0Seric e->e_message = newstr(&statmsg[4]); 1607198d9be0Seric } 16088557d168Seric errno = 0; 1609d4bd8f0eSbostic #ifdef NAMED_BIND 1610f28da541Smiriam h_errno = 0; 1611d4bd8f0eSbostic #endif 1612eb238f8cSeric } 1613eb238f8cSeric /* 1614eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1615eb238f8cSeric ** 1616eb238f8cSeric ** Parameters: 161781161401Seric ** m -- the mailer info. Can be NULL for initial queue. 161881161401Seric ** mci -- the mailer connection info -- can be NULL if the 161981161401Seric ** log is occuring when no connection is active. 162081161401Seric ** stat -- the message to print for the status. 162181161401Seric ** e -- the current envelope. 1622eb238f8cSeric ** 1623eb238f8cSeric ** Returns: 1624eb238f8cSeric ** none 1625eb238f8cSeric ** 1626eb238f8cSeric ** Side Effects: 1627eb238f8cSeric ** none 1628eb238f8cSeric */ 1629eb238f8cSeric 163081161401Seric logdelivery(m, mci, stat, e) 163181161401Seric MAILER *m; 163281161401Seric register MCI *mci; 1633eb238f8cSeric char *stat; 1634b31e7f2bSeric register ENVELOPE *e; 16355cf56be3Seric { 1636eb238f8cSeric # ifdef LOG 16379507d1f9Seric char *curhost; 1638d6acf3eeSeric char buf[512]; 16399507d1f9Seric extern char *pintvl(); 16409507d1f9Seric extern char *macvalue(); 16419507d1f9Seric 164248ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 164381161401Seric 164448ed5d33Seric if (m != NULL) 164571ff6caaSeric { 164648ed5d33Seric (void) strcat(buf, ", mailer="); 164748ed5d33Seric (void) strcat(buf, m->m_name); 164871ff6caaSeric } 164948ed5d33Seric 165048ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 165171ff6caaSeric { 165271ff6caaSeric # ifdef DAEMON 1653e2f2f828Seric extern SOCKADDR CurHostAddr; 1654e2f2f828Seric extern char *anynet_ntoa(); 165548ed5d33Seric # endif 165671ff6caaSeric 165748ed5d33Seric (void) strcat(buf, ", relay="); 165848ed5d33Seric (void) strcat(buf, mci->mci_host); 165948ed5d33Seric 166048ed5d33Seric # ifdef DAEMON 166148ed5d33Seric (void) strcat(buf, " ("); 1662e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 166348ed5d33Seric (void) strcat(buf, ")"); 166471ff6caaSeric # endif 166571ff6caaSeric } 16669507d1f9Seric else 166748ed5d33Seric { 166848ed5d33Seric char *p = macvalue('h', e); 16699507d1f9Seric 167048ed5d33Seric if (p != NULL && p[0] != '\0') 167148ed5d33Seric { 167248ed5d33Seric (void) strcat(buf, ", relay="); 167348ed5d33Seric (void) strcat(buf, p); 167448ed5d33Seric } 167548ed5d33Seric } 1676d6acf3eeSeric 1677d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1678d6acf3eeSeric e->e_id, e->e_to, buf, stat); 16796c2c3107Seric # endif /* LOG */ 168025a99e2eSeric } 168125a99e2eSeric /* 168251552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 168325a99e2eSeric ** 168451552439Seric ** This can be made an arbitrary message separator by changing $l 168551552439Seric ** 16869b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 16879b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 16889b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 16899b6c17a6Seric ** this kind of antique garbage???? 169025a99e2eSeric ** 169125a99e2eSeric ** Parameters: 169251552439Seric ** fp -- the file to output to. 169351552439Seric ** m -- the mailer describing this entry. 169425a99e2eSeric ** 169525a99e2eSeric ** Returns: 169651552439Seric ** none 169725a99e2eSeric ** 169825a99e2eSeric ** Side Effects: 169951552439Seric ** outputs some text to fp. 170025a99e2eSeric */ 170125a99e2eSeric 1702b31e7f2bSeric putfromline(fp, m, e) 170351552439Seric register FILE *fp; 170451552439Seric register MAILER *m; 1705b31e7f2bSeric ENVELOPE *e; 170625a99e2eSeric { 17072bc47524Seric char *template = "\201l\n"; 170851552439Seric char buf[MAXLINE]; 170925a99e2eSeric 171057fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 171151552439Seric return; 171213bbc08cSeric 17132c7e1b8dSeric # ifdef UGLYUUCP 171457fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 171574b6e67bSeric { 1716ea09d6edSeric char *bang; 1717ea09d6edSeric char xbuf[MAXLINE]; 171874b6e67bSeric 1719ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17206c2c3107Seric bang = strchr(buf, '!'); 172174b6e67bSeric if (bang == NULL) 172208b25121Seric syserr("554 No ! in UUCP! (%s)", buf); 172374b6e67bSeric else 1724588cad61Seric { 1725ea09d6edSeric *bang++ = '\0'; 17262bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1727ea09d6edSeric template = xbuf; 172874b6e67bSeric } 1729588cad61Seric } 17306c2c3107Seric # endif /* UGLYUUCP */ 1731b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 173277b52738Seric putline(buf, fp, m); 1733bc6e2962Seric } 1734bc6e2962Seric /* 173551552439Seric ** PUTBODY -- put the body of a message. 173651552439Seric ** 173751552439Seric ** Parameters: 173851552439Seric ** fp -- file to output onto. 173977b52738Seric ** m -- a mailer descriptor to control output format. 17409a6a5f55Seric ** e -- the envelope to put out. 174151552439Seric ** 174251552439Seric ** Returns: 174351552439Seric ** none. 174451552439Seric ** 174551552439Seric ** Side Effects: 174651552439Seric ** The message is written onto fp. 174751552439Seric */ 174851552439Seric 174977b52738Seric putbody(fp, m, e) 175051552439Seric FILE *fp; 1751588cad61Seric MAILER *m; 17529a6a5f55Seric register ENVELOPE *e; 175351552439Seric { 175477b52738Seric char buf[MAXLINE]; 175551552439Seric 175651552439Seric /* 175751552439Seric ** Output the body of the message 175851552439Seric */ 175951552439Seric 17609a6a5f55Seric if (e->e_dfp == NULL) 176151552439Seric { 17629a6a5f55Seric if (e->e_df != NULL) 17639a6a5f55Seric { 17649a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 17659a6a5f55Seric if (e->e_dfp == NULL) 17668f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 17678f9146b0Srick e->e_df, e->e_to, e->e_from); 17689a6a5f55Seric } 17699a6a5f55Seric else 177077b52738Seric putline("<<< No Message Collected >>>", fp, m); 17719a6a5f55Seric } 17729a6a5f55Seric if (e->e_dfp != NULL) 17739a6a5f55Seric { 17749a6a5f55Seric rewind(e->e_dfp); 177577b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 177624fc8aeeSeric { 177724fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1778d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 17793462ad9eSeric (void) putc('>', fp); 178077b52738Seric putline(buf, fp, m); 178124fc8aeeSeric } 178251552439Seric 17839a6a5f55Seric if (ferror(e->e_dfp)) 178451552439Seric { 178551552439Seric syserr("putbody: read error"); 178651552439Seric ExitStat = EX_IOERR; 178751552439Seric } 178851552439Seric } 178951552439Seric 179051552439Seric (void) fflush(fp); 179151552439Seric if (ferror(fp) && errno != EPIPE) 179251552439Seric { 179351552439Seric syserr("putbody: write error"); 179451552439Seric ExitStat = EX_IOERR; 179551552439Seric } 179651552439Seric errno = 0; 179725a99e2eSeric } 179825a99e2eSeric /* 179925a99e2eSeric ** MAILFILE -- Send a message to a file. 180025a99e2eSeric ** 1801f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1802f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1803f129ec7dSeric ** rather than the real user. Obviously, this only works if 1804f129ec7dSeric ** sendmail runs as root. 1805f129ec7dSeric ** 1806588cad61Seric ** This could be done as a subordinate mailer, except that it 1807588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1808588cad61Seric ** view this as being sufficiently important as to include it 1809588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1810588cad61Seric ** to create another process plus some pipes to save the message. 1811588cad61Seric ** 181225a99e2eSeric ** Parameters: 181325a99e2eSeric ** filename -- the name of the file to send to. 18146259796dSeric ** ctladdr -- the controlling address header -- includes 18156259796dSeric ** the userid/groupid to be when sending. 181625a99e2eSeric ** 181725a99e2eSeric ** Returns: 181825a99e2eSeric ** The exit code associated with the operation. 181925a99e2eSeric ** 182025a99e2eSeric ** Side Effects: 182125a99e2eSeric ** none. 182225a99e2eSeric */ 182325a99e2eSeric 1824b31e7f2bSeric mailfile(filename, ctladdr, e) 182525a99e2eSeric char *filename; 18266259796dSeric ADDRESS *ctladdr; 1827b31e7f2bSeric register ENVELOPE *e; 182825a99e2eSeric { 182925a99e2eSeric register FILE *f; 183032d19d43Seric register int pid; 183115d084d5Seric int mode; 183225a99e2eSeric 183332d19d43Seric /* 183432d19d43Seric ** Fork so we can change permissions here. 183532d19d43Seric ** Note that we MUST use fork, not vfork, because of 183632d19d43Seric ** the complications of calling subroutines, etc. 183732d19d43Seric */ 183832d19d43Seric 183932d19d43Seric DOFORK(fork); 184032d19d43Seric 184132d19d43Seric if (pid < 0) 184232d19d43Seric return (EX_OSERR); 184332d19d43Seric else if (pid == 0) 184432d19d43Seric { 184532d19d43Seric /* child -- actually write to file */ 1846f129ec7dSeric struct stat stb; 1847f129ec7dSeric 18480984da9fSeric (void) signal(SIGINT, SIG_DFL); 18490984da9fSeric (void) signal(SIGHUP, SIG_DFL); 18500984da9fSeric (void) signal(SIGTERM, SIG_DFL); 18513462ad9eSeric (void) umask(OldUmask); 185295f16dc0Seric 1853f129ec7dSeric if (stat(filename, &stb) < 0) 1854e6e1265fSeric stb.st_mode = 0666; 185515d084d5Seric mode = stb.st_mode; 185695f16dc0Seric 185795f16dc0Seric /* limit the errors to those actually caused in the child */ 185895f16dc0Seric errno = 0; 185995f16dc0Seric ExitStat = EX_OK; 186095f16dc0Seric 1861f129ec7dSeric if (bitset(0111, stb.st_mode)) 1862f129ec7dSeric exit(EX_CANTCREAT); 186303827b5fSeric if (ctladdr == NULL) 18648f9146b0Srick ctladdr = &e->e_from; 186515d084d5Seric else 186615d084d5Seric { 186715d084d5Seric /* ignore setuid and setgid bits */ 186815d084d5Seric mode &= ~(S_ISGID|S_ISUID); 186915d084d5Seric } 187015d084d5Seric 18718f9146b0Srick /* we have to open the dfile BEFORE setuid */ 18728f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 18738f9146b0Srick { 18748f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 187595f16dc0Seric if (e->e_dfp == NULL) 187695f16dc0Seric { 18778f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 18788f9146b0Srick e->e_df, e->e_to, e->e_from); 18798f9146b0Srick } 18808f9146b0Srick } 18818f9146b0Srick 188215d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1883e36b99e2Seric { 188495f16dc0Seric if (ctladdr->q_uid == 0) 188595f16dc0Seric { 1886e36b99e2Seric (void) setgid(DefGid); 1887898a126bSbostic (void) initgroups(DefUser, DefGid); 188895f16dc0Seric } 188995f16dc0Seric else 189095f16dc0Seric { 18916259796dSeric (void) setgid(ctladdr->q_gid); 1892898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1893898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1894898a126bSbostic ctladdr->q_gid); 1895898a126bSbostic } 1896e36b99e2Seric } 189715d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1898e36b99e2Seric { 1899e36b99e2Seric if (ctladdr->q_uid == 0) 1900e36b99e2Seric (void) setuid(DefUid); 1901e36b99e2Seric else 19026259796dSeric (void) setuid(ctladdr->q_uid); 1903e36b99e2Seric } 190495f16dc0Seric FileName = filename; 190595f16dc0Seric LineNumber = 0; 190627628d59Seric f = dfopen(filename, "a"); 190725a99e2eSeric if (f == NULL) 190895f16dc0Seric { 190908b25121Seric message("554 cannot open"); 191032d19d43Seric exit(EX_CANTCREAT); 191195f16dc0Seric } 191225a99e2eSeric 1913b31e7f2bSeric putfromline(f, ProgMailer, e); 1914b843d759Seric (*e->e_puthdr)(f, ProgMailer, e); 191577b52738Seric putline("\n", f, ProgMailer); 1916b843d759Seric (*e->e_putbody)(f, ProgMailer, e); 191777b52738Seric putline("\n", f, ProgMailer); 191895f16dc0Seric if (ferror(f)) 191995f16dc0Seric { 192008b25121Seric message("451 I/O error"); 192195f16dc0Seric setstat(EX_IOERR); 192295f16dc0Seric } 1923ee4b0922Seric (void) xfclose(f, "mailfile", filename); 192432d19d43Seric (void) fflush(stdout); 1925e36b99e2Seric 192627628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1927c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 192895f16dc0Seric exit(ExitStat); 192913bbc08cSeric /*NOTREACHED*/ 193032d19d43Seric } 193132d19d43Seric else 193232d19d43Seric { 193332d19d43Seric /* parent -- wait for exit status */ 1934588cad61Seric int st; 193532d19d43Seric 1936588cad61Seric st = waitfor(pid); 1937588cad61Seric if ((st & 0377) != 0) 1938588cad61Seric return (EX_UNAVAILABLE); 1939588cad61Seric else 1940588cad61Seric return ((st >> 8) & 0377); 19418f9146b0Srick /*NOTREACHED*/ 194232d19d43Seric } 194325a99e2eSeric } 1944ea4dc939Seric /* 1945e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 1946e103b48fSeric ** 1947e103b48fSeric ** The signature describes how we are going to send this -- it 1948e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 1949e103b48fSeric ** an ordered list of MX hosts. 1950e103b48fSeric ** 1951e103b48fSeric ** Parameters: 1952e103b48fSeric ** m -- the mailer describing this host. 1953e103b48fSeric ** host -- the host name. 1954e103b48fSeric ** e -- the current envelope. 1955e103b48fSeric ** 1956e103b48fSeric ** Returns: 1957e103b48fSeric ** The signature for this host. 1958e103b48fSeric ** 1959e103b48fSeric ** Side Effects: 1960e103b48fSeric ** Can tweak the symbol table. 1961e103b48fSeric */ 1962e103b48fSeric 1963e103b48fSeric char * 1964e103b48fSeric hostsignature(m, host, e) 1965e103b48fSeric register MAILER *m; 1966e103b48fSeric char *host; 1967e103b48fSeric ENVELOPE *e; 1968e103b48fSeric { 1969e103b48fSeric register char *p; 1970e103b48fSeric register STAB *s; 1971e103b48fSeric int i; 1972e103b48fSeric int len; 1973e103b48fSeric #ifdef NAMED_BIND 1974e103b48fSeric int nmx; 1975e103b48fSeric auto int rcode; 1976e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 1977e103b48fSeric static char myhostbuf[MAXNAME]; 1978e103b48fSeric #endif 1979e103b48fSeric 1980e103b48fSeric /* 1981e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 1982e103b48fSeric */ 1983e103b48fSeric 1984e103b48fSeric p = m->m_mailer; 1985e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 1986e103b48fSeric { 1987e103b48fSeric /* just an ordinary mailer */ 1988e103b48fSeric return host; 1989e103b48fSeric } 1990e103b48fSeric 1991e103b48fSeric /* 1992e103b48fSeric ** If it is a numeric address, just return it. 1993e103b48fSeric */ 1994e103b48fSeric 1995e103b48fSeric if (host[0] == '[') 1996e103b48fSeric return host; 1997e103b48fSeric 1998e103b48fSeric /* 1999e103b48fSeric ** Look it up in the symbol table. 2000e103b48fSeric */ 2001e103b48fSeric 2002e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2003e103b48fSeric if (s->s_hostsig != NULL) 2004e103b48fSeric return s->s_hostsig; 2005e103b48fSeric 2006e103b48fSeric /* 2007e103b48fSeric ** Not already there -- create a signature. 2008e103b48fSeric */ 2009e103b48fSeric 2010e103b48fSeric #ifdef NAMED_BIND 2011e103b48fSeric if (myhostbuf[0] == '\0') 20122bc47524Seric expand("\201j", myhostbuf, &myhostbuf[sizeof myhostbuf - 1], e); 2013e103b48fSeric 2014e103b48fSeric nmx = getmxrr(host, mxhosts, myhostbuf, &rcode); 20157d55540cSeric 2016e103b48fSeric if (nmx <= 0) 2017e103b48fSeric { 2018e103b48fSeric register MCI *mci; 2019e103b48fSeric extern int errno; 2020e103b48fSeric extern MCI *mci_get(); 2021e103b48fSeric 2022e103b48fSeric /* update the connection info for this host */ 2023e103b48fSeric mci = mci_get(host, m); 2024e103b48fSeric mci->mci_exitstat = rcode; 2025e103b48fSeric mci->mci_errno = errno; 2026e103b48fSeric 2027e103b48fSeric /* and return the original host name as the signature */ 2028e103b48fSeric s->s_hostsig = host; 2029e103b48fSeric return host; 2030e103b48fSeric } 2031e103b48fSeric 2032e103b48fSeric len = 0; 2033e103b48fSeric for (i = 0; i < nmx; i++) 2034e103b48fSeric { 2035e103b48fSeric len += strlen(mxhosts[i]) + 1; 2036e103b48fSeric } 2037e103b48fSeric s->s_hostsig = p = xalloc(len); 2038e103b48fSeric for (i = 0; i < nmx; i++) 2039e103b48fSeric { 2040e103b48fSeric if (i != 0) 2041e103b48fSeric *p++ = ':'; 2042e103b48fSeric strcpy(p, mxhosts[i]); 2043e103b48fSeric p += strlen(p); 2044e103b48fSeric } 2045e103b48fSeric makelower(s->s_hostsig); 2046e103b48fSeric #else 2047e103b48fSeric /* not using BIND -- the signature is just the host name */ 2048e103b48fSeric s->s_hostsig = host; 2049e103b48fSeric #endif 2050e103b48fSeric if (tTd(17, 1)) 2051e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2052e103b48fSeric return s->s_hostsig; 2053e103b48fSeric } 2054