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*f170942cSeric static char sccsid[] = "@(#)deliver.c 8.2 (Berkeley) 07/11/93"; 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> 20*f170942cSeric 21*f170942cSeric 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 53896b16f6Seric if (bitset(EF_FATALERRS, e->e_flags)) 54896b16f6Seric { 55896b16f6Seric /* this will get a return message -- so don't send it */ 56896b16f6Seric e->e_flags |= EF_CLRQUEUE; 57896b16f6Seric return; 58896b16f6Seric } 59896b16f6Seric 609c9e68d9Seric /* determine actual delivery mode */ 619c9e68d9Seric if (mode == SM_DEFAULT) 629c9e68d9Seric { 639c9e68d9Seric mode = e->e_sendmode; 649c9e68d9Seric if (mode != SM_VERIFY && 659c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 669c9e68d9Seric mode = SM_QUEUE; 676103d9b4Seric announcequeueup = mode == SM_QUEUE; 689c9e68d9Seric } 696103d9b4Seric else 706103d9b4Seric announcequeueup = FALSE; 719c9e68d9Seric 729c9e68d9Seric if (tTd(13, 1)) 739c9e68d9Seric { 749c9e68d9Seric printf("\nSENDALL: mode %c, e_from ", mode); 759c9e68d9Seric printaddr(&e->e_from, FALSE); 769c9e68d9Seric printf("sendqueue:\n"); 779c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 789c9e68d9Seric } 799c9e68d9Seric 809c9e68d9Seric /* 819c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 829c9e68d9Seric ** Check to make sure the hop count is reasonable. 839c9e68d9Seric ** Delete sends to the sender in mailing lists. 849c9e68d9Seric */ 859c9e68d9Seric 869c9e68d9Seric CurEnv = e; 879c9e68d9Seric 889c9e68d9Seric if (e->e_hopcount > MaxHopCount) 899c9e68d9Seric { 909c9e68d9Seric errno = 0; 919c9e68d9Seric syserr("554 too many hops %d (%d max): from %s, to %s", 929c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 939c9e68d9Seric e->e_sendqueue->q_paddr); 949c9e68d9Seric return; 959c9e68d9Seric } 969c9e68d9Seric 97b8004690Seric /* 98b8004690Seric ** Do sender deletion. 99b8004690Seric ** 100b8004690Seric ** If the sender has the QQUEUEUP flag set, skip this. 101b8004690Seric ** This can happen if the name server is hosed when you 102b8004690Seric ** are trying to send mail. The result is that the sender 103b8004690Seric ** is instantiated in the queue as a recipient. 104b8004690Seric */ 105b8004690Seric 106b8004690Seric if (!MeToo && !bitset(QQUEUEUP, e->e_from.q_flags)) 1079c9e68d9Seric { 1089c9e68d9Seric if (tTd(13, 5)) 1099c9e68d9Seric { 1109c9e68d9Seric printf("sendall: QDONTSEND "); 1119c9e68d9Seric printaddr(&e->e_from, FALSE); 1129c9e68d9Seric } 1139c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 1149c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1159c9e68d9Seric } 1169c9e68d9Seric 117ce5531bdSeric /* 118ce5531bdSeric ** Handle alias owners. 119ce5531bdSeric ** 120ce5531bdSeric ** We scan up the q_alias chain looking for owners. 121ce5531bdSeric ** We discard owners that are the same as the return path. 122ce5531bdSeric */ 123ce5531bdSeric 124ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 125ce5531bdSeric { 126ce5531bdSeric register struct address *a; 127ce5531bdSeric 128ce5531bdSeric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 129ce5531bdSeric continue; 130ce5531bdSeric if (a != NULL) 131ce5531bdSeric q->q_owner = a->q_owner; 132ce5531bdSeric 133ce5531bdSeric if (q->q_owner != NULL && 134ce5531bdSeric !bitset(QDONTSEND, q->q_flags) && 135ce5531bdSeric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 136ce5531bdSeric q->q_owner = NULL; 137ce5531bdSeric } 138ce5531bdSeric 139ce5531bdSeric owner = ""; 140ce5531bdSeric otherowners = 1; 141ce5531bdSeric while (owner != NULL && otherowners > 0) 142ce5531bdSeric { 143ce5531bdSeric owner = NULL; 144ce5531bdSeric otherowners = 0; 145ce5531bdSeric 146ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 147ce5531bdSeric { 148ce5531bdSeric if (bitset(QDONTSEND, q->q_flags)) 149ce5531bdSeric continue; 150ce5531bdSeric 151ce5531bdSeric if (q->q_owner != NULL) 152ce5531bdSeric { 153ce5531bdSeric if (owner == NULL) 154ce5531bdSeric owner = q->q_owner; 155ce5531bdSeric else if (owner != q->q_owner) 156ce5531bdSeric { 157ce5531bdSeric if (strcmp(owner, q->q_owner) == 0) 158ce5531bdSeric { 159ce5531bdSeric /* make future comparisons cheap */ 160ce5531bdSeric q->q_owner = owner; 161ce5531bdSeric } 162ce5531bdSeric else 163ce5531bdSeric { 164ce5531bdSeric otherowners++; 165ce5531bdSeric } 166ce5531bdSeric owner = q->q_owner; 167ce5531bdSeric } 168ce5531bdSeric } 169ce5531bdSeric else 170ce5531bdSeric { 171ce5531bdSeric otherowners++; 172ce5531bdSeric } 173ce5531bdSeric } 174ce5531bdSeric 175ce5531bdSeric if (owner != NULL && otherowners > 0) 176ce5531bdSeric { 177ce5531bdSeric extern HDR *copyheader(); 178ce5531bdSeric extern ADDRESS *copyqueue(); 179ce5531bdSeric 180ce5531bdSeric /* 181ce5531bdSeric ** Split this envelope into two. 182ce5531bdSeric */ 183ce5531bdSeric 184ce5531bdSeric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 185ce5531bdSeric *ee = *e; 186ce5531bdSeric ee->e_id = NULL; 187ce5531bdSeric (void) queuename(ee, '\0'); 188ce5531bdSeric 189ce5531bdSeric if (tTd(13, 1)) 190ce5531bdSeric printf("sendall: split %s into %s\n", 191ce5531bdSeric e->e_id, ee->e_id); 192ce5531bdSeric 193ce5531bdSeric ee->e_header = copyheader(e->e_header); 194ce5531bdSeric ee->e_sendqueue = copyqueue(e->e_sendqueue); 195ce5531bdSeric ee->e_errorqueue = copyqueue(e->e_errorqueue); 196ce5531bdSeric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS); 197ce5531bdSeric setsender(owner, ee, NULL, TRUE); 198ce5531bdSeric if (tTd(13, 5)) 199ce5531bdSeric { 200ce5531bdSeric printf("sendall(split): QDONTSEND "); 201ce5531bdSeric printaddr(&ee->e_from, FALSE); 202ce5531bdSeric } 203ce5531bdSeric ee->e_from.q_flags |= QDONTSEND; 204ce5531bdSeric ee->e_dfp = NULL; 205ce5531bdSeric ee->e_xfp = NULL; 206ce5531bdSeric ee->e_lockfp = NULL; 207ce5531bdSeric ee->e_df = NULL; 208ce5531bdSeric ee->e_errormode = EM_MAIL; 209ce5531bdSeric ee->e_sibling = splitenv; 210ce5531bdSeric splitenv = ee; 211ce5531bdSeric 212ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 213ce5531bdSeric if (q->q_owner == owner) 214ce5531bdSeric q->q_flags |= QDONTSEND; 215ce5531bdSeric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 216ce5531bdSeric if (q->q_owner != owner) 217ce5531bdSeric q->q_flags |= QDONTSEND; 218ce5531bdSeric 219ce5531bdSeric if (e->e_df != NULL && mode != SM_VERIFY) 220ce5531bdSeric { 221ce5531bdSeric ee->e_dfp = NULL; 222ce5531bdSeric ee->e_df = newstr(queuename(ee, 'd')); 223ce5531bdSeric if (link(e->e_df, ee->e_df) < 0) 224ce5531bdSeric { 225ce5531bdSeric syserr("sendall: link(%s, %s)", 226ce5531bdSeric e->e_df, ee->e_df); 227ce5531bdSeric } 228ce5531bdSeric } 229ce5531bdSeric 230ce5531bdSeric if (mode != SM_VERIFY) 231ce5531bdSeric openxscript(ee); 232ce5531bdSeric #ifdef LOG 233ce5531bdSeric if (LogLevel > 4) 234ce5531bdSeric syslog(LOG_INFO, "%s: clone %s", 235ce5531bdSeric ee->e_id, e->e_id); 236ce5531bdSeric #endif 237ce5531bdSeric } 238ce5531bdSeric } 239ce5531bdSeric 240ce5531bdSeric if (owner != NULL) 241ce5531bdSeric { 242ce5531bdSeric setsender(owner, e, NULL, TRUE); 243ce5531bdSeric if (tTd(13, 5)) 244ce5531bdSeric { 245ce5531bdSeric printf("sendall(owner): QDONTSEND "); 246ce5531bdSeric printaddr(&e->e_from, FALSE); 247ce5531bdSeric } 248ce5531bdSeric e->e_from.q_flags |= QDONTSEND; 249ce5531bdSeric e->e_errormode = EM_MAIL; 250ce5531bdSeric } 251ce5531bdSeric 252c1ac89b1Seric # ifdef QUEUE 253c1ac89b1Seric if ((mode == SM_QUEUE || mode == SM_FORK || 254c1ac89b1Seric (mode != SM_VERIFY && SuperSafe)) && 255c1ac89b1Seric !bitset(EF_INQUEUE, e->e_flags)) 256c1ac89b1Seric { 257c1ac89b1Seric /* be sure everything is instantiated in the queue */ 2586103d9b4Seric queueup(e, TRUE, announcequeueup); 259ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2606103d9b4Seric queueup(ee, TRUE, announcequeueup); 261c1ac89b1Seric } 262c1ac89b1Seric #endif /* QUEUE */ 263c1ac89b1Seric 264ce5531bdSeric if (splitenv != NULL) 265ce5531bdSeric { 266ce5531bdSeric if (tTd(13, 1)) 267ce5531bdSeric { 268ce5531bdSeric printf("\nsendall: Split queue; remaining queue:\n"); 269ce5531bdSeric printaddr(e->e_sendqueue, TRUE); 270ce5531bdSeric } 271ce5531bdSeric 272ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 273ce5531bdSeric { 274ce5531bdSeric CurEnv = ee; 275ce5531bdSeric sendenvelope(ee, mode); 276ce5531bdSeric } 277ce5531bdSeric 278ce5531bdSeric CurEnv = e; 279ce5531bdSeric } 280ce5531bdSeric sendenvelope(e, mode); 281ce5531bdSeric 282ce5531bdSeric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 283ce5531bdSeric dropenvelope(splitenv); 284ce5531bdSeric } 285ce5531bdSeric 286ce5531bdSeric sendenvelope(e, mode) 287ce5531bdSeric register ENVELOPE *e; 288ce5531bdSeric char mode; 289ce5531bdSeric { 290ce5531bdSeric bool oldverbose; 291ce5531bdSeric int pid; 292ce5531bdSeric register ADDRESS *q; 293ce5531bdSeric #ifdef LOCKF 294ce5531bdSeric struct flock lfd; 295ce5531bdSeric #endif 296ce5531bdSeric 297ce5531bdSeric oldverbose = Verbose; 298c1ac89b1Seric switch (mode) 299c1ac89b1Seric { 300c1ac89b1Seric case SM_VERIFY: 301c1ac89b1Seric Verbose = TRUE; 302c1ac89b1Seric break; 303c1ac89b1Seric 304c1ac89b1Seric case SM_QUEUE: 305c1ac89b1Seric queueonly: 306c1ac89b1Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 307c1ac89b1Seric return; 308c1ac89b1Seric 309c1ac89b1Seric case SM_FORK: 310c1ac89b1Seric if (e->e_xfp != NULL) 311c1ac89b1Seric (void) fflush(e->e_xfp); 312c1ac89b1Seric 313c1ac89b1Seric # ifdef LOCKF 314c1ac89b1Seric /* 315c1ac89b1Seric ** Since lockf has the interesting semantic that the 316c1ac89b1Seric ** lock is lost when we fork, we have to risk losing 317c1ac89b1Seric ** the lock here by closing before the fork, and then 318c1ac89b1Seric ** trying to get it back in the child. 319c1ac89b1Seric */ 320c1ac89b1Seric 321c1ac89b1Seric if (e->e_lockfp != NULL) 322c1ac89b1Seric { 323c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 324c1ac89b1Seric e->e_lockfp = NULL; 325c1ac89b1Seric } 326c1ac89b1Seric # endif /* LOCKF */ 327c1ac89b1Seric 328c1ac89b1Seric pid = fork(); 329c1ac89b1Seric if (pid < 0) 330c1ac89b1Seric { 331c1ac89b1Seric goto queueonly; 332c1ac89b1Seric } 333c1ac89b1Seric else if (pid > 0) 334c1ac89b1Seric { 335c1ac89b1Seric /* be sure we leave the temp files to our child */ 336c1ac89b1Seric e->e_id = e->e_df = NULL; 337c1ac89b1Seric # ifndef LOCKF 338c1ac89b1Seric if (e->e_lockfp != NULL) 339c1ac89b1Seric { 340c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 341c1ac89b1Seric e->e_lockfp = NULL; 342c1ac89b1Seric } 343c1ac89b1Seric # endif 344c1ac89b1Seric 345c1ac89b1Seric /* close any random open files in the envelope */ 346c1ac89b1Seric if (e->e_dfp != NULL) 347c1ac89b1Seric { 348c1ac89b1Seric (void) xfclose(e->e_dfp, "sendenvelope", "dfp"); 349c1ac89b1Seric e->e_dfp = NULL; 350c1ac89b1Seric } 351c1ac89b1Seric if (e->e_xfp != NULL) 352c1ac89b1Seric { 353c1ac89b1Seric (void) xfclose(e->e_xfp, "sendenvelope", "xfp"); 354c1ac89b1Seric e->e_xfp = NULL; 355c1ac89b1Seric } 356c1ac89b1Seric return; 357c1ac89b1Seric } 358c1ac89b1Seric 359c1ac89b1Seric /* double fork to avoid zombies */ 360c1ac89b1Seric if (fork() > 0) 361c1ac89b1Seric exit(EX_OK); 362c1ac89b1Seric 363c1ac89b1Seric /* be sure we are immune from the terminal */ 364c1ac89b1Seric disconnect(FALSE, e); 365c1ac89b1Seric 366c1ac89b1Seric # ifdef LOCKF 367c1ac89b1Seric /* 368c1ac89b1Seric ** Now try to get our lock back. 369c1ac89b1Seric */ 370c1ac89b1Seric 371c1ac89b1Seric lfd.l_type = F_WRLCK; 372c1ac89b1Seric lfd.l_whence = lfd.l_start = lfd.l_len = 0; 373c1ac89b1Seric e->e_lockfp = fopen(queuename(e, 'q'), "r+"); 374c1ac89b1Seric if (e->e_lockfp == NULL || 375c1ac89b1Seric fcntl(fileno(e->e_lockfp), F_SETLK, &lfd) < 0) 376c1ac89b1Seric { 377c1ac89b1Seric /* oops.... lost it */ 378c1ac89b1Seric if (tTd(13, 1)) 379c1ac89b1Seric printf("sendenvelope: %s lost lock: lockfp=%x, %s\n", 380c1ac89b1Seric e->e_id, e->e_lockfp, errstring(errno)); 381c1ac89b1Seric 382c1ac89b1Seric # ifdef LOG 383c1ac89b1Seric if (LogLevel > 29) 384c1ac89b1Seric syslog(LOG_NOTICE, "%s: lost lock: %m", 385c1ac89b1Seric e->e_id); 386c1ac89b1Seric # endif /* LOG */ 387c1ac89b1Seric exit(EX_OK); 388c1ac89b1Seric } 389c1ac89b1Seric # endif /* LOCKF */ 390c1ac89b1Seric 391c1ac89b1Seric /* 392c1ac89b1Seric ** Close any cached connections. 393c1ac89b1Seric ** 394c1ac89b1Seric ** We don't send the QUIT protocol because the parent 395c1ac89b1Seric ** still knows about the connection. 396c1ac89b1Seric ** 397c1ac89b1Seric ** This should only happen when delivering an error 398c1ac89b1Seric ** message. 399c1ac89b1Seric */ 400c1ac89b1Seric 401c1ac89b1Seric mci_flush(FALSE, NULL); 402c1ac89b1Seric 403c1ac89b1Seric break; 404c1ac89b1Seric } 405c1ac89b1Seric 406c1ac89b1Seric /* 4079c9e68d9Seric ** Run through the list and send everything. 4089c9e68d9Seric */ 4099c9e68d9Seric 4109c9e68d9Seric e->e_nsent = 0; 4119c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4129c9e68d9Seric { 4139c9e68d9Seric if (mode == SM_VERIFY) 4149c9e68d9Seric { 4159c9e68d9Seric e->e_to = q->q_paddr; 4169c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4178dfca105Seric { 4188dfca105Seric message("deliverable: mailer %s, host %s, user %s", 4198dfca105Seric q->q_mailer->m_name, 4208dfca105Seric q->q_host, 4218dfca105Seric q->q_user); 4228dfca105Seric } 4239c9e68d9Seric } 4249c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4259c9e68d9Seric { 4269c9e68d9Seric # ifdef QUEUE 4279c9e68d9Seric /* 4289c9e68d9Seric ** Checkpoint the send list every few addresses 4299c9e68d9Seric */ 4309c9e68d9Seric 4319c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4329c9e68d9Seric { 4339c9e68d9Seric queueup(e, TRUE, FALSE); 4349c9e68d9Seric e->e_nsent = 0; 4359c9e68d9Seric } 4369c9e68d9Seric # endif /* QUEUE */ 4379c9e68d9Seric (void) deliver(e, q); 4389c9e68d9Seric } 4399c9e68d9Seric } 4409c9e68d9Seric Verbose = oldverbose; 4419c9e68d9Seric 4429c9e68d9Seric /* 4439c9e68d9Seric ** Now run through and check for errors. 4449c9e68d9Seric */ 4459c9e68d9Seric 4469c9e68d9Seric if (mode == SM_VERIFY) 4479c9e68d9Seric { 4489c9e68d9Seric return; 4499c9e68d9Seric } 4509c9e68d9Seric 4519c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4529c9e68d9Seric { 4539c9e68d9Seric if (tTd(13, 3)) 4549c9e68d9Seric { 4559c9e68d9Seric printf("Checking "); 4569c9e68d9Seric printaddr(q, FALSE); 4579c9e68d9Seric } 4589c9e68d9Seric 4599c9e68d9Seric /* only send errors if the message failed */ 460ce5531bdSeric if (!bitset(QBADADDR, q->q_flags) || 461ce5531bdSeric bitset(QDONTSEND, q->q_flags)) 4629c9e68d9Seric continue; 4639c9e68d9Seric 4649c9e68d9Seric e->e_flags |= EF_FATALERRS; 4659c9e68d9Seric 4669c9e68d9Seric if (q->q_owner == NULL && strcmp(e->e_from.q_paddr, "<>") != 0) 4679c9e68d9Seric (void) sendtolist(e->e_from.q_paddr, NULL, 4689c9e68d9Seric &e->e_errorqueue, e); 4699c9e68d9Seric } 4709c9e68d9Seric 4719c9e68d9Seric if (mode == SM_FORK) 4729c9e68d9Seric finis(); 4739c9e68d9Seric } 4749c9e68d9Seric /* 4759c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4769c9e68d9Seric ** 4779c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4789c9e68d9Seric ** two processes on the same stack!!! 4799c9e68d9Seric ** 4809c9e68d9Seric ** Parameters: 4819c9e68d9Seric ** none. 4829c9e68d9Seric ** 4839c9e68d9Seric ** Returns: 4849c9e68d9Seric ** From a macro??? You've got to be kidding! 4859c9e68d9Seric ** 4869c9e68d9Seric ** Side Effects: 4879c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4889c9e68d9Seric ** pid of child in parent, zero in child. 4899c9e68d9Seric ** -1 on unrecoverable error. 4909c9e68d9Seric ** 4919c9e68d9Seric ** Notes: 4929c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4939c9e68d9Seric ** vfork for you..... 4949c9e68d9Seric */ 4959c9e68d9Seric 4969c9e68d9Seric # define NFORKTRIES 5 4979c9e68d9Seric 4989c9e68d9Seric # ifndef FORK 4999c9e68d9Seric # define FORK fork 5009c9e68d9Seric # endif 5019c9e68d9Seric 5029c9e68d9Seric # define DOFORK(fORKfN) \ 5039c9e68d9Seric {\ 5049c9e68d9Seric register int i;\ 5059c9e68d9Seric \ 5069c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 5079c9e68d9Seric {\ 5089c9e68d9Seric pid = fORKfN();\ 5099c9e68d9Seric if (pid >= 0)\ 5109c9e68d9Seric break;\ 5119c9e68d9Seric if (i > 0)\ 5129c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 5139c9e68d9Seric }\ 5149c9e68d9Seric } 5159c9e68d9Seric /* 5169c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 5179c9e68d9Seric ** 5189c9e68d9Seric ** Parameters: 5199c9e68d9Seric ** none. 5209c9e68d9Seric ** 5219c9e68d9Seric ** Returns: 5229c9e68d9Seric ** pid of child in parent. 5239c9e68d9Seric ** zero in child. 5249c9e68d9Seric ** -1 on error. 5259c9e68d9Seric ** 5269c9e68d9Seric ** Side Effects: 5279c9e68d9Seric ** returns twice, once in parent and once in child. 5289c9e68d9Seric */ 5299c9e68d9Seric 5309c9e68d9Seric dofork() 5319c9e68d9Seric { 5329c9e68d9Seric register int pid; 5339c9e68d9Seric 5349c9e68d9Seric DOFORK(fork); 5359c9e68d9Seric return (pid); 5369c9e68d9Seric } 5379c9e68d9Seric /* 53813bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 53913bbc08cSeric ** 54013bbc08cSeric ** This routine delivers to everyone on the same host as the 54113bbc08cSeric ** user on the head of the list. It is clever about mailers 54213bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 54313bbc08cSeric ** that it will deliver to all these addresses however -- so 54413bbc08cSeric ** deliver should be called once for each address on the 54513bbc08cSeric ** list. 54625a99e2eSeric ** 54725a99e2eSeric ** Parameters: 548588cad61Seric ** e -- the envelope to deliver. 549c77d1c25Seric ** firstto -- head of the address list to deliver to. 55025a99e2eSeric ** 55125a99e2eSeric ** Returns: 55225a99e2eSeric ** zero -- successfully delivered. 55325a99e2eSeric ** else -- some failure, see ExitStat for more info. 55425a99e2eSeric ** 55525a99e2eSeric ** Side Effects: 55625a99e2eSeric ** The standard input is passed off to someone. 55725a99e2eSeric */ 55825a99e2eSeric 559588cad61Seric deliver(e, firstto) 560588cad61Seric register ENVELOPE *e; 561c77d1c25Seric ADDRESS *firstto; 56225a99e2eSeric { 56378442df3Seric char *host; /* host being sent to */ 56478442df3Seric char *user; /* user being sent to */ 56525a99e2eSeric char **pvp; 5665dfc646bSeric register char **mvp; 56725a99e2eSeric register char *p; 568588cad61Seric register MAILER *m; /* mailer for this recipient */ 5696259796dSeric ADDRESS *ctladdr; 570b31e7f2bSeric register MCI *mci; 571c77d1c25Seric register ADDRESS *to = firstto; 572c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 573772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 574911693bfSbostic int rcode; /* response code */ 575e103b48fSeric char *firstsig; /* signature of firstto */ 5769c9e68d9Seric int pid; 5779c9e68d9Seric char *curhost; 5789c9e68d9Seric int mpvect[2]; 5799c9e68d9Seric int rpvect[2]; 580ee6bf8dfSeric char *pv[MAXPV+1]; 581579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 582ee6bf8dfSeric char buf[MAXNAME]; 583c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 584fabb3bd4Seric extern int checkcompat(); 5859c9e68d9Seric extern FILE *fdopen(); 58625a99e2eSeric 58735490626Seric errno = 0; 588ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5895dfc646bSeric return (0); 59025a99e2eSeric 591134746fbSeric #ifdef NAMED_BIND 592912a731aSbostic /* unless interactive, try twice, over a minute */ 593912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 594912a731aSbostic _res.retrans = 30; 595912a731aSbostic _res.retry = 2; 596912a731aSbostic } 597d4bd8f0eSbostic #endif 598912a731aSbostic 59951552439Seric m = to->q_mailer; 60051552439Seric host = to->q_host; 601c9be6216Seric CurEnv = e; /* just in case */ 6024384d521Seric e->e_statmsg = NULL; 60351552439Seric 6046ef48975Seric if (tTd(10, 1)) 6055dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 60651552439Seric m->m_mno, host, to->q_user); 607f3dbc832Seric 608f3dbc832Seric /* 609f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 610f3dbc832Seric ** connections now, just mark these addresses and return. 611f3dbc832Seric ** This is useful if we want to batch connections to 612f3dbc832Seric ** reduce load. This will cause the messages to be 613f3dbc832Seric ** queued up, and a daemon will come along to send the 614f3dbc832Seric ** messages later. 615f3dbc832Seric ** This should be on a per-mailer basis. 616f3dbc832Seric */ 617f3dbc832Seric 61819c47125Seric if (NoConnect && !bitset(EF_QUEUERUN, e->e_flags) && 61919c47125Seric bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 620f3dbc832Seric { 621f3dbc832Seric for (; to != NULL; to = to->q_next) 622f4560e80Seric { 623ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 624c6e18ac5Seric to->q_mailer != m) 625f4560e80Seric continue; 626f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 627588cad61Seric e->e_to = to->q_paddr; 62808b25121Seric message("queued"); 6292f624c86Seric if (LogLevel > 8) 63081161401Seric logdelivery(m, NULL, "queued", e); 631f4560e80Seric } 632588cad61Seric e->e_to = NULL; 633f3dbc832Seric return (0); 634f3dbc832Seric } 635f3dbc832Seric 63625a99e2eSeric /* 6375dfc646bSeric ** Do initial argv setup. 6385dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6395dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6405dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6415dfc646bSeric ** code does not check for 'pv' overflow; this places a 6425dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6433bea8136Seric ** The from address rewrite is expected to make 6443bea8136Seric ** the address relative to the other end. 6455dfc646bSeric */ 6465dfc646bSeric 64778442df3Seric /* rewrite from address, using rewriting rules */ 648efe54562Seric rcode = EX_OK; 649efe54562Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, 650efe54562Seric RF_SENDERADDR|RF_CANONICAL, 651efe54562Seric &rcode, e)); 652ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 653588cad61Seric define('h', host, e); /* to host */ 6545dfc646bSeric Errors = 0; 6555dfc646bSeric pvp = pv; 6565dfc646bSeric *pvp++ = m->m_argv[0]; 6575dfc646bSeric 6585dfc646bSeric /* insert -f or -r flag as appropriate */ 65957fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6605dfc646bSeric { 66157fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6625dfc646bSeric *pvp++ = "-f"; 6635dfc646bSeric else 6645dfc646bSeric *pvp++ = "-r"; 665c23ed322Seric *pvp++ = newstr(rpathbuf); 6665dfc646bSeric } 6675dfc646bSeric 6685dfc646bSeric /* 6695dfc646bSeric ** Append the other fixed parts of the argv. These run 6705dfc646bSeric ** up to the first entry containing "$u". There can only 6715dfc646bSeric ** be one of these, and there are only a few more slots 6725dfc646bSeric ** in the pv after it. 6735dfc646bSeric */ 6745dfc646bSeric 6755dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6765dfc646bSeric { 6772bc47524Seric /* can't use strchr here because of sign extension problems */ 6782bc47524Seric while (*p != '\0') 6792bc47524Seric { 6802bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6812bc47524Seric { 6822bc47524Seric if (*p == 'u') 6835dfc646bSeric break; 6842bc47524Seric } 6852bc47524Seric } 6862bc47524Seric 6872bc47524Seric if (*p != '\0') 6885dfc646bSeric break; 6895dfc646bSeric 6905dfc646bSeric /* this entry is safe -- go ahead and process it */ 691588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6925dfc646bSeric *pvp++ = newstr(buf); 6935dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6945dfc646bSeric { 69508b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6965dfc646bSeric return (-1); 6975dfc646bSeric } 6985dfc646bSeric } 699c579ef51Seric 70033db8731Seric /* 70133db8731Seric ** If we have no substitution for the user name in the argument 70233db8731Seric ** list, we know that we must supply the names otherwise -- and 70333db8731Seric ** SMTP is the answer!! 70433db8731Seric */ 70533db8731Seric 7065dfc646bSeric if (*mvp == NULL) 707c579ef51Seric { 708c579ef51Seric /* running SMTP */ 7092c7e1b8dSeric # ifdef SMTP 710c579ef51Seric clever = TRUE; 711c579ef51Seric *pvp = NULL; 7126c2c3107Seric # else /* SMTP */ 71333db8731Seric /* oops! we don't implement SMTP */ 71408b25121Seric syserr("554 SMTP style mailer"); 7152c7e1b8dSeric return (EX_SOFTWARE); 7166c2c3107Seric # endif /* SMTP */ 717c579ef51Seric } 7185dfc646bSeric 7195dfc646bSeric /* 7205dfc646bSeric ** At this point *mvp points to the argument with $u. We 7215dfc646bSeric ** run through our address list and append all the addresses 7225dfc646bSeric ** we can. If we run out of space, do not fret! We can 7235dfc646bSeric ** always send another copy later. 7245dfc646bSeric */ 7255dfc646bSeric 7265dfc646bSeric tobuf[0] = '\0'; 727588cad61Seric e->e_to = tobuf; 7286259796dSeric ctladdr = NULL; 729e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7305dfc646bSeric for (; to != NULL; to = to->q_next) 7315dfc646bSeric { 7325dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 73357fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7345dfc646bSeric break; 7355dfc646bSeric 7365dfc646bSeric /* if already sent or not for this host, don't send */ 737ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 738e103b48fSeric to->q_mailer != firstto->q_mailer || 739e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7405dfc646bSeric continue; 7416259796dSeric 7424b22ea87Seric /* avoid overflowing tobuf */ 743aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7444b22ea87Seric break; 7454b22ea87Seric 7466ef48975Seric if (tTd(10, 1)) 747772e6e50Seric { 748772e6e50Seric printf("\nsend to "); 749772e6e50Seric printaddr(to, FALSE); 750772e6e50Seric } 751772e6e50Seric 7526259796dSeric /* compute effective uid/gid when sending */ 7537da1035fSeric if (to->q_mailer == ProgMailer) 7546259796dSeric ctladdr = getctladdr(to); 7556259796dSeric 7565dfc646bSeric user = to->q_user; 757588cad61Seric e->e_to = to->q_paddr; 75875f1ade9Seric if (tTd(10, 5)) 75975f1ade9Seric { 76075f1ade9Seric printf("deliver: QDONTSEND "); 76175f1ade9Seric printaddr(to, FALSE); 76275f1ade9Seric } 763ee4b0922Seric to->q_flags |= QDONTSEND; 7645dfc646bSeric 7655dfc646bSeric /* 7665dfc646bSeric ** Check to see that these people are allowed to 7675dfc646bSeric ** talk to each other. 7682a6e0786Seric */ 7692a6e0786Seric 77069582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 77169582d2fSeric { 77269582d2fSeric NoReturn = TRUE; 77308b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 77481161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 77569582d2fSeric continue; 77669582d2fSeric } 777fabb3bd4Seric rcode = checkcompat(to, e); 7781793c9c5Seric if (rcode != EX_OK) 7795dfc646bSeric { 78081161401Seric giveresponse(rcode, m, NULL, e); 7815dfc646bSeric continue; 7825dfc646bSeric } 7832a6e0786Seric 7842a6e0786Seric /* 7859ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7869ec9501bSeric ** about them. 78725a99e2eSeric */ 78825a99e2eSeric 78957fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 79025a99e2eSeric { 7911d8f1806Seric stripquotes(user); 7921d8f1806Seric stripquotes(host); 79325a99e2eSeric } 79425a99e2eSeric 795cdb828c5Seric /* hack attack -- delivermail compatibility */ 796cdb828c5Seric if (m == ProgMailer && *user == '|') 797cdb828c5Seric user++; 798cdb828c5Seric 79925a99e2eSeric /* 8003efaed6eSeric ** If an error message has already been given, don't 8013efaed6eSeric ** bother to send to this address. 8023efaed6eSeric ** 8033efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 8043efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 8053efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 8063efaed6eSeric */ 8073efaed6eSeric 8086cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 8093efaed6eSeric continue; 8103efaed6eSeric 811f2fec898Seric /* save statistics.... */ 812588cad61Seric markstats(e, to); 813f2fec898Seric 8143efaed6eSeric /* 81525a99e2eSeric ** See if this user name is "special". 81625a99e2eSeric ** If the user name has a slash in it, assume that this 81751552439Seric ** is a file -- send it off without further ado. Note 81851552439Seric ** that this type of addresses is not processed along 81951552439Seric ** with the others, so we fudge on the To person. 82025a99e2eSeric */ 82125a99e2eSeric 8222c017f8dSeric if (m == FileMailer) 82325a99e2eSeric { 824b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 82581161401Seric giveresponse(rcode, m, NULL, e); 826dde5acadSeric if (rcode == EX_OK) 827dde5acadSeric to->q_flags |= QSENT; 8285dfc646bSeric continue; 82925a99e2eSeric } 83025a99e2eSeric 83113bbc08cSeric /* 83213bbc08cSeric ** Address is verified -- add this user to mailer 83313bbc08cSeric ** argv, and add it to the print list of recipients. 83413bbc08cSeric */ 83513bbc08cSeric 836508daeccSeric /* link together the chain of recipients */ 837508daeccSeric to->q_tchain = tochain; 838508daeccSeric tochain = to; 839508daeccSeric 8405dfc646bSeric /* create list of users for error messages */ 841db8841e9Seric (void) strcat(tobuf, ","); 842db8841e9Seric (void) strcat(tobuf, to->q_paddr); 843588cad61Seric define('u', user, e); /* to user */ 844588cad61Seric define('z', to->q_home, e); /* user's home */ 8455dfc646bSeric 846c579ef51Seric /* 847508daeccSeric ** Expand out this user into argument list. 848c579ef51Seric */ 849c579ef51Seric 850508daeccSeric if (!clever) 851c579ef51Seric { 852588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8535dfc646bSeric *pvp++ = newstr(buf); 8545dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8555dfc646bSeric { 8565dfc646bSeric /* allow some space for trailing parms */ 8575dfc646bSeric break; 8585dfc646bSeric } 8595dfc646bSeric } 860c579ef51Seric } 8615dfc646bSeric 862145b49b1Seric /* see if any addresses still exist */ 863145b49b1Seric if (tobuf[0] == '\0') 864c579ef51Seric { 865588cad61Seric define('g', (char *) NULL, e); 866145b49b1Seric return (0); 867c579ef51Seric } 868145b49b1Seric 8695dfc646bSeric /* print out messages as full list */ 87063780dbdSeric e->e_to = tobuf + 1; 8715dfc646bSeric 8725dfc646bSeric /* 8735dfc646bSeric ** Fill out any parameters after the $u parameter. 8745dfc646bSeric */ 8755dfc646bSeric 876c579ef51Seric while (!clever && *++mvp != NULL) 8775dfc646bSeric { 878588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8795dfc646bSeric *pvp++ = newstr(buf); 8805dfc646bSeric if (pvp >= &pv[MAXPV]) 88108b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8825dfc646bSeric } 8835dfc646bSeric *pvp++ = NULL; 8845dfc646bSeric 88525a99e2eSeric /* 88625a99e2eSeric ** Call the mailer. 8876328bdf7Seric ** The argument vector gets built, pipes 88825a99e2eSeric ** are created as necessary, and we fork & exec as 8896328bdf7Seric ** appropriate. 890c579ef51Seric ** If we are running SMTP, we just need to clean up. 89125a99e2eSeric */ 89225a99e2eSeric 8937ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 89486b26461Seric ctladdr = &e->e_from; 895134746fbSeric #ifdef NAMED_BIND 8962bcc6d2dSeric if (ConfigLevel < 2) 897912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 898134746fbSeric #endif 8999c9e68d9Seric 9009c9e68d9Seric if (tTd(11, 1)) 901134746fbSeric { 9029c9e68d9Seric printf("openmailer:"); 9039c9e68d9Seric printav(pv); 9049c9e68d9Seric } 9059c9e68d9Seric errno = 0; 9069c9e68d9Seric 9079c9e68d9Seric CurHostName = m->m_mailer; 9089c9e68d9Seric 9099c9e68d9Seric /* 9109c9e68d9Seric ** Deal with the special case of mail handled through an IPC 9119c9e68d9Seric ** connection. 9129c9e68d9Seric ** In this case we don't actually fork. We must be 9139c9e68d9Seric ** running SMTP for this to work. We will return a 9149c9e68d9Seric ** zero pid to indicate that we are running IPC. 9159c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 9169c9e68d9Seric */ 9179c9e68d9Seric 9189c9e68d9Seric curhost = NULL; 9199c9e68d9Seric 9209c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9219c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9229c9e68d9Seric { 9239c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9249c9e68d9Seric bzero((char *) mci, sizeof *mci); 9259c9e68d9Seric mci->mci_in = stdin; 9269c9e68d9Seric mci->mci_out = stdout; 9279c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9289c9e68d9Seric mci->mci_mailer = m; 9299c9e68d9Seric } 9309c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9319c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9329c9e68d9Seric { 9339c9e68d9Seric #ifdef DAEMON 9349c9e68d9Seric register int i; 9359c9e68d9Seric register u_short port; 9369c9e68d9Seric 9379c9e68d9Seric CurHostName = pv[1]; 9389c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9399c9e68d9Seric 9409c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9419c9e68d9Seric { 9429c9e68d9Seric syserr("null signature"); 943845e533cSeric rcode = EX_OSERR; 944b31e7f2bSeric goto give_up; 945b31e7f2bSeric } 9469c9e68d9Seric 9479c9e68d9Seric if (!clever) 9489c9e68d9Seric { 9499c9e68d9Seric syserr("554 non-clever IPC"); 9509c9e68d9Seric rcode = EX_OSERR; 9519c9e68d9Seric goto give_up; 9529c9e68d9Seric } 9539c9e68d9Seric if (pv[2] != NULL) 9549c9e68d9Seric port = atoi(pv[2]); 9559c9e68d9Seric else 9569c9e68d9Seric port = 0; 9579c9e68d9Seric tryhost: 9589c9e68d9Seric mci = NULL; 9599c9e68d9Seric while (*curhost != '\0') 9609c9e68d9Seric { 9619c9e68d9Seric register char *p; 9629c9e68d9Seric static char hostbuf[MAXNAME]; 9639c9e68d9Seric 9649c9e68d9Seric mci = NULL; 9659c9e68d9Seric 9669c9e68d9Seric /* pull the next host from the signature */ 9679c9e68d9Seric p = strchr(curhost, ':'); 9689c9e68d9Seric if (p == NULL) 9699c9e68d9Seric p = &curhost[strlen(curhost)]; 9709c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9719c9e68d9Seric hostbuf[p - curhost] = '\0'; 9729c9e68d9Seric if (*p != '\0') 9739c9e68d9Seric p++; 9749c9e68d9Seric curhost = p; 9759c9e68d9Seric 9769c9e68d9Seric /* see if we already know that this host is fried */ 9779c9e68d9Seric CurHostName = hostbuf; 9789c9e68d9Seric mci = mci_get(hostbuf, m); 9799c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9809c9e68d9Seric { 9819c9e68d9Seric if (tTd(11, 1)) 9829c9e68d9Seric { 9839c9e68d9Seric printf("openmailer: "); 9849c9e68d9Seric mci_dump(mci); 9859c9e68d9Seric } 9869c9e68d9Seric CurHostName = mci->mci_host; 9879c9e68d9Seric break; 9889c9e68d9Seric } 9899c9e68d9Seric mci->mci_mailer = m; 9909c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9919c9e68d9Seric continue; 9929c9e68d9Seric 9939c9e68d9Seric /* try the connection */ 9949c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9959c9e68d9Seric message("Connecting to %s (%s)...", 9969c9e68d9Seric hostbuf, m->m_name); 9979c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9989c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9999c9e68d9Seric mci->mci_exitstat = i; 10009c9e68d9Seric mci->mci_errno = errno; 1001*f170942cSeric #ifdef NAMED_BIND 1002*f170942cSeric mci->mci_herrno = h_errno; 1003*f170942cSeric #endif 10049c9e68d9Seric if (i == EX_OK) 10059c9e68d9Seric { 10069c9e68d9Seric mci->mci_state = MCIS_OPENING; 10079c9e68d9Seric mci_cache(mci); 1008*f170942cSeric if (TrafficLogFile != NULL) 1009*f170942cSeric fprintf(TrafficLogFile, "%05d == CONNECT %s\n", 1010*f170942cSeric getpid(), hostbuf); 10119c9e68d9Seric break; 10129c9e68d9Seric } 10139c9e68d9Seric else if (tTd(11, 1)) 10149c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 10159c9e68d9Seric i, errno); 10169c9e68d9Seric 10179c9e68d9Seric 10189c9e68d9Seric /* enter status of this host */ 10199c9e68d9Seric setstat(i); 10209c9e68d9Seric } 10219c9e68d9Seric mci->mci_pid = 0; 10229c9e68d9Seric #else /* no DAEMON */ 10239c9e68d9Seric syserr("554 openmailer: no IPC"); 10249c9e68d9Seric if (tTd(11, 1)) 10259c9e68d9Seric printf("openmailer: NULL\n"); 10269c9e68d9Seric return NULL; 10279c9e68d9Seric #endif /* DAEMON */ 10289c9e68d9Seric } 10299c9e68d9Seric else 10309c9e68d9Seric { 1031*f170942cSeric #ifdef XDEBUG 1032*f170942cSeric char wbuf[MAXLINE]; 10336fe8c3bcSeric 10346fe8c3bcSeric /* make absolutely certain 0, 1, and 2 are in use */ 1035*f170942cSeric sprintf(wbuf, "%s... openmailer(%s)", e->e_to, m->m_name); 1036*f170942cSeric checkfd012(wbuf); 1037*f170942cSeric #endif 10380e3bfef5Seric 1039*f170942cSeric if (TrafficLogFile != NULL) 10400e3bfef5Seric { 1041*f170942cSeric char **av; 1042*f170942cSeric 1043*f170942cSeric fprintf(TrafficLogFile, "%05d === EXEC", getpid()); 1044*f170942cSeric for (av = pv; *av != NULL; av++) 1045*f170942cSeric fprintf(TrafficLogFile, " %s", *av); 1046*f170942cSeric fprintf(TrafficLogFile, "\n"); 10476fe8c3bcSeric } 10486fe8c3bcSeric 10499c9e68d9Seric /* create a pipe to shove the mail through */ 10509c9e68d9Seric if (pipe(mpvect) < 0) 10519c9e68d9Seric { 10520e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10530e3bfef5Seric e->e_to, m->m_name); 10549c9e68d9Seric if (tTd(11, 1)) 10559c9e68d9Seric printf("openmailer: NULL\n"); 10569c9e68d9Seric rcode = EX_OSERR; 10579c9e68d9Seric goto give_up; 10589c9e68d9Seric } 10599c9e68d9Seric 10609c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10619c9e68d9Seric if (clever && pipe(rpvect) < 0) 10629c9e68d9Seric { 10630e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10640e3bfef5Seric e->e_to, m->m_name); 10659c9e68d9Seric (void) close(mpvect[0]); 10669c9e68d9Seric (void) close(mpvect[1]); 10679c9e68d9Seric if (tTd(11, 1)) 10689c9e68d9Seric printf("openmailer: NULL\n"); 10699c9e68d9Seric rcode = EX_OSERR; 10709c9e68d9Seric goto give_up; 10719c9e68d9Seric } 10729c9e68d9Seric 10739c9e68d9Seric /* 10749c9e68d9Seric ** Actually fork the mailer process. 10759c9e68d9Seric ** DOFORK is clever about retrying. 10769c9e68d9Seric ** 10779c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10789c9e68d9Seric ** around so that endmail will get it. 10799c9e68d9Seric */ 10809c9e68d9Seric 10819c9e68d9Seric if (e->e_xfp != NULL) 10829c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10839c9e68d9Seric (void) fflush(stdout); 10849c9e68d9Seric # ifdef SIGCHLD 10859c9e68d9Seric (void) signal(SIGCHLD, SIG_DFL); 10869c9e68d9Seric # endif /* SIGCHLD */ 10879c9e68d9Seric DOFORK(FORK); 10889c9e68d9Seric /* pid is set by DOFORK */ 10899c9e68d9Seric if (pid < 0) 10909c9e68d9Seric { 10919c9e68d9Seric /* failure */ 10920e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10930e3bfef5Seric e->e_to, m->m_name); 10949c9e68d9Seric (void) close(mpvect[0]); 10959c9e68d9Seric (void) close(mpvect[1]); 10969c9e68d9Seric if (clever) 10979c9e68d9Seric { 10989c9e68d9Seric (void) close(rpvect[0]); 10999c9e68d9Seric (void) close(rpvect[1]); 11009c9e68d9Seric } 11019c9e68d9Seric if (tTd(11, 1)) 11029c9e68d9Seric printf("openmailer: NULL\n"); 11039c9e68d9Seric rcode = EX_OSERR; 11049c9e68d9Seric goto give_up; 11059c9e68d9Seric } 11069c9e68d9Seric else if (pid == 0) 11079c9e68d9Seric { 11089c9e68d9Seric int i; 11099c9e68d9Seric int saveerrno; 11109c9e68d9Seric char **ep; 11119c9e68d9Seric char *env[MAXUSERENVIRON]; 11129c9e68d9Seric extern char **environ; 11139c9e68d9Seric extern int DtableSize; 11149c9e68d9Seric 11159c9e68d9Seric /* child -- set up input & exec mailer */ 11169c9e68d9Seric /* make diagnostic output be standard output */ 11179c9e68d9Seric (void) signal(SIGINT, SIG_IGN); 11189c9e68d9Seric (void) signal(SIGHUP, SIG_IGN); 11199c9e68d9Seric (void) signal(SIGTERM, SIG_DFL); 11209c9e68d9Seric 11219c9e68d9Seric /* close any other cached connections */ 11229c9e68d9Seric mci_flush(FALSE, mci); 11239c9e68d9Seric 1124b986f6aaSeric /* move into some "safe" directory */ 1125b986f6aaSeric if (m->m_execdir != NULL) 1126b986f6aaSeric { 1127b986f6aaSeric char *p, *q; 1128b986f6aaSeric char buf[MAXLINE]; 1129b986f6aaSeric 1130b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1131b986f6aaSeric { 1132b986f6aaSeric q = strchr(p, ':'); 1133b986f6aaSeric if (q != NULL) 1134b986f6aaSeric *q = '\0'; 1135b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1136b986f6aaSeric if (q != NULL) 1137b986f6aaSeric *q++ = ':'; 1138b986f6aaSeric if (tTd(11, 20)) 1139b986f6aaSeric printf("openmailer: trydir %s\n", 1140b986f6aaSeric buf); 1141b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1142b986f6aaSeric break; 1143b986f6aaSeric } 1144b986f6aaSeric } 1145b986f6aaSeric 11469c9e68d9Seric /* arrange to filter std & diag output of command */ 11479c9e68d9Seric if (clever) 11489c9e68d9Seric { 11499c9e68d9Seric (void) close(rpvect[0]); 11506fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11516fe8c3bcSeric { 11520e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11530e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11546fe8c3bcSeric _exit(EX_OSERR); 11556fe8c3bcSeric } 11569c9e68d9Seric (void) close(rpvect[1]); 11579c9e68d9Seric } 11589c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11599c9e68d9Seric { 11609c9e68d9Seric /* put mailer output in transcript */ 11616fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11626fe8c3bcSeric { 11630e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11640e3bfef5Seric e->e_to, m->m_name, 11656fe8c3bcSeric fileno(e->e_xfp)); 11666fe8c3bcSeric _exit(EX_OSERR); 11679c9e68d9Seric } 11686fe8c3bcSeric } 11696fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11706fe8c3bcSeric { 11710e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11720e3bfef5Seric e->e_to, m->m_name); 11736fe8c3bcSeric _exit(EX_OSERR); 11746fe8c3bcSeric } 11759c9e68d9Seric 11769c9e68d9Seric /* arrange to get standard input */ 11779c9e68d9Seric (void) close(mpvect[1]); 11789c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11799c9e68d9Seric { 11800e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 11810e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 11829c9e68d9Seric _exit(EX_OSERR); 11839c9e68d9Seric } 11849c9e68d9Seric (void) close(mpvect[0]); 11859c9e68d9Seric if (!bitnset(M_RESTR, m->m_flags)) 11869c9e68d9Seric { 11879c9e68d9Seric if (ctladdr == NULL || ctladdr->q_uid == 0) 11889c9e68d9Seric { 11899c9e68d9Seric (void) setgid(DefGid); 11909c9e68d9Seric (void) initgroups(DefUser, DefGid); 11919c9e68d9Seric (void) setuid(DefUid); 11929c9e68d9Seric } 11939c9e68d9Seric else 11949c9e68d9Seric { 11959c9e68d9Seric (void) setgid(ctladdr->q_gid); 11969c9e68d9Seric (void) initgroups(ctladdr->q_ruser? 11979c9e68d9Seric ctladdr->q_ruser: ctladdr->q_user, 11989c9e68d9Seric ctladdr->q_gid); 11999c9e68d9Seric (void) setuid(ctladdr->q_uid); 12009c9e68d9Seric } 12019c9e68d9Seric } 12029c9e68d9Seric 12039c9e68d9Seric /* arrange for all the files to be closed */ 12049c9e68d9Seric for (i = 3; i < DtableSize; i++) 12059c9e68d9Seric { 12069c9e68d9Seric register int j; 12079c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 12089c9e68d9Seric (void)fcntl(i, F_SETFD, j|1); 12099c9e68d9Seric } 12109c9e68d9Seric 12119c9e68d9Seric /* set up the mailer environment */ 12129c9e68d9Seric i = 0; 12139c9e68d9Seric env[i++] = "AGENT=sendmail"; 12149c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 12159c9e68d9Seric { 12169c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12179c9e68d9Seric env[i++] = *ep; 12189c9e68d9Seric } 12199c9e68d9Seric env[i++] = NULL; 12209c9e68d9Seric 12219c9e68d9Seric /* try to execute the mailer */ 12229c9e68d9Seric execve(m->m_mailer, pv, env); 12239c9e68d9Seric saveerrno = errno; 12249c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12257c941fd2Seric if (m == LocalMailer || transienterror(saveerrno)) 12267c941fd2Seric _exit(EX_OSERR); 12279c9e68d9Seric _exit(EX_UNAVAILABLE); 12289c9e68d9Seric } 12299c9e68d9Seric 12309c9e68d9Seric /* 12319c9e68d9Seric ** Set up return value. 12329c9e68d9Seric */ 12339c9e68d9Seric 12349c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12359c9e68d9Seric bzero((char *) mci, sizeof *mci); 12369c9e68d9Seric mci->mci_mailer = m; 12379c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12389c9e68d9Seric mci->mci_pid = pid; 12399c9e68d9Seric (void) close(mpvect[0]); 12409c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12419c9e68d9Seric if (clever) 12429c9e68d9Seric { 12439c9e68d9Seric (void) close(rpvect[1]); 12449c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12459c9e68d9Seric } 12469c9e68d9Seric else 12479c9e68d9Seric { 12489c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12499c9e68d9Seric mci->mci_in = NULL; 12509c9e68d9Seric } 12519c9e68d9Seric } 12529c9e68d9Seric 12539c9e68d9Seric /* 12549c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12559c9e68d9Seric */ 12569c9e68d9Seric 12579c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12589c9e68d9Seric { 12599c9e68d9Seric smtpinit(m, mci, e); 12609c9e68d9Seric } 12619c9e68d9Seric if (tTd(11, 1)) 12629c9e68d9Seric { 12639c9e68d9Seric printf("openmailer: "); 12649c9e68d9Seric mci_dump(mci); 12659c9e68d9Seric } 12669c9e68d9Seric 12679c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1268b31e7f2bSeric { 1269b31e7f2bSeric /* couldn't open the mailer */ 1270b31e7f2bSeric rcode = mci->mci_exitstat; 12712a6bc25bSeric errno = mci->mci_errno; 1272*f170942cSeric #ifdef NAMED_BIND 1273*f170942cSeric h_errno = mci->mci_herrno; 1274*f170942cSeric #endif 1275b31e7f2bSeric if (rcode == EX_OK) 1276b31e7f2bSeric { 1277b31e7f2bSeric /* shouldn't happen */ 127808b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12796b0f339dSeric rcode, mci->mci_state, firstsig); 1280b31e7f2bSeric rcode = EX_SOFTWARE; 1281b31e7f2bSeric } 1282e9277e33Seric else if (rcode == EX_TEMPFAIL && *curhost != '\0') 128390891494Seric { 128490891494Seric /* try next MX site */ 128590891494Seric goto tryhost; 128690891494Seric } 1287b31e7f2bSeric } 1288b31e7f2bSeric else if (!clever) 1289b31e7f2bSeric { 1290b31e7f2bSeric /* 1291b31e7f2bSeric ** Format and send message. 1292b31e7f2bSeric */ 129315d084d5Seric 1294b31e7f2bSeric putfromline(mci->mci_out, m, e); 1295b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1296b31e7f2bSeric putline("\n", mci->mci_out, m); 129703c02fdeSeric (*e->e_putbody)(mci->mci_out, m, e, NULL); 1298b31e7f2bSeric 1299b31e7f2bSeric /* get the exit status */ 1300c9be6216Seric rcode = endmailer(mci, e, pv); 1301134746fbSeric } 1302134746fbSeric else 1303b31e7f2bSeric #ifdef SMTP 1304134746fbSeric { 1305b31e7f2bSeric /* 1306b31e7f2bSeric ** Send the MAIL FROM: protocol 1307b31e7f2bSeric */ 130815d084d5Seric 1309b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1310b31e7f2bSeric if (rcode == EX_OK) 131175889e88Seric { 1312ded0d3daSkarels register char *t = tobuf; 1313ded0d3daSkarels register int i; 1314ded0d3daSkarels 1315588cad61Seric /* send the recipient list */ 131663780dbdSeric tobuf[0] = '\0'; 131775889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 131875889e88Seric { 131963780dbdSeric e->e_to = to->q_paddr; 132015d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 132175889e88Seric { 132283b7ddc9Seric markfailure(e, to, i); 132381161401Seric giveresponse(i, m, mci, e); 132463780dbdSeric } 132575889e88Seric else 132675889e88Seric { 1327911693bfSbostic *t++ = ','; 1328b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1329b31e7f2bSeric continue; 1330588cad61Seric } 1331588cad61Seric } 1332588cad61Seric 133363780dbdSeric /* now send the data */ 133463780dbdSeric if (tobuf[0] == '\0') 1335b31e7f2bSeric { 13369c9e68d9Seric rcode = EX_OK; 133763780dbdSeric e->e_to = NULL; 1338b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1339b31e7f2bSeric smtprset(m, mci, e); 1340b31e7f2bSeric } 134175889e88Seric else 134275889e88Seric { 134363780dbdSeric e->e_to = tobuf + 1; 134475889e88Seric rcode = smtpdata(m, mci, e); 134563780dbdSeric } 134663780dbdSeric 134763780dbdSeric /* now close the connection */ 1348b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 134915d084d5Seric smtpquit(m, mci, e); 135063780dbdSeric } 13519c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13529c9e68d9Seric { 13539c9e68d9Seric /* try next MX site */ 13549c9e68d9Seric goto tryhost; 13559c9e68d9Seric } 1356c579ef51Seric } 1357b31e7f2bSeric #else /* not SMTP */ 1358a05b3449Sbostic { 135908b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1360845e533cSeric rcode = EX_CONFIG; 1361b31e7f2bSeric goto give_up; 1362a05b3449Sbostic } 1363b31e7f2bSeric #endif /* SMTP */ 1364134746fbSeric #ifdef NAMED_BIND 13652bcc6d2dSeric if (ConfigLevel < 2) 1366912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1367134746fbSeric #endif 13685dfc646bSeric 1369b31e7f2bSeric /* arrange a return receipt if requested */ 13708c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1371b31e7f2bSeric { 1372b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1373b31e7f2bSeric /* do we want to send back more info? */ 1374b31e7f2bSeric } 1375b31e7f2bSeric 1376c77d1c25Seric /* 137763780dbdSeric ** Do final status disposal. 137863780dbdSeric ** We check for something in tobuf for the SMTP case. 1379c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1380c77d1c25Seric ** addressees. 1381c77d1c25Seric */ 1382c77d1c25Seric 1383b31e7f2bSeric give_up: 138463780dbdSeric if (tobuf[0] != '\0') 138581161401Seric giveresponse(rcode, m, mci, e); 1386772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1387b31e7f2bSeric { 1388dde5acadSeric if (rcode != EX_OK) 138983b7ddc9Seric markfailure(e, to, rcode); 1390dde5acadSeric else 1391655518ecSeric { 1392dde5acadSeric to->q_flags |= QSENT; 1393655518ecSeric e->e_nsent++; 1394655518ecSeric } 1395b31e7f2bSeric } 1396b31e7f2bSeric 1397b31e7f2bSeric /* 1398b31e7f2bSeric ** Restore state and return. 1399b31e7f2bSeric */ 1400c77d1c25Seric 140135490626Seric errno = 0; 1402588cad61Seric define('g', (char *) NULL, e); 14035826d9d3Seric return (rcode); 140425a99e2eSeric } 14055dfc646bSeric /* 140683b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 140783b7ddc9Seric ** 140883b7ddc9Seric ** Parameters: 140983b7ddc9Seric ** e -- the envelope we are sending. 141083b7ddc9Seric ** q -- the address to mark. 141183b7ddc9Seric ** rcode -- the code signifying the particular failure. 141283b7ddc9Seric ** 141383b7ddc9Seric ** Returns: 141483b7ddc9Seric ** none. 141583b7ddc9Seric ** 141683b7ddc9Seric ** Side Effects: 141783b7ddc9Seric ** marks the address (and possibly the envelope) with the 141883b7ddc9Seric ** failure so that an error will be returned or 141983b7ddc9Seric ** the message will be queued, as appropriate. 142083b7ddc9Seric */ 142183b7ddc9Seric 142283b7ddc9Seric markfailure(e, q, rcode) 142383b7ddc9Seric register ENVELOPE *e; 142483b7ddc9Seric register ADDRESS *q; 142583b7ddc9Seric int rcode; 142683b7ddc9Seric { 142719c47125Seric char buf[MAXLINE]; 142819c47125Seric 142983b7ddc9Seric if (rcode == EX_OK) 143083b7ddc9Seric return; 1431*f170942cSeric else if (rcode == EX_TEMPFAIL) 143283b7ddc9Seric q->q_flags |= QQUEUEUP; 1433*f170942cSeric else if (rcode != EX_IOERR && rcode != EX_OSERR) 1434*f170942cSeric q->q_flags |= QBADADDR; 143583b7ddc9Seric } 143683b7ddc9Seric /* 1437c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1438c579ef51Seric ** 1439c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1440c579ef51Seric ** violation), so we report those specially. For other 1441c579ef51Seric ** errors, we choose a status message (into statmsg), 1442c579ef51Seric ** and if it represents an error, we print it. 1443c579ef51Seric ** 1444c579ef51Seric ** Parameters: 1445c579ef51Seric ** pid -- pid of mailer. 1446c9be6216Seric ** e -- the current envelope. 1447c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1448c9be6216Seric ** (for error messages). 1449c579ef51Seric ** 1450c579ef51Seric ** Returns: 1451c579ef51Seric ** exit code of mailer. 1452c579ef51Seric ** 1453c579ef51Seric ** Side Effects: 1454c579ef51Seric ** none. 1455c579ef51Seric */ 1456c579ef51Seric 1457c9be6216Seric endmailer(mci, e, pv) 1458b31e7f2bSeric register MCI *mci; 1459c9be6216Seric register ENVELOPE *e; 1460c9be6216Seric char **pv; 1461c579ef51Seric { 1462588cad61Seric int st; 1463c579ef51Seric 146475889e88Seric /* close any connections */ 146575889e88Seric if (mci->mci_in != NULL) 1466c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 146775889e88Seric if (mci->mci_out != NULL) 1468c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 146975889e88Seric mci->mci_in = mci->mci_out = NULL; 147075889e88Seric mci->mci_state = MCIS_CLOSED; 147175889e88Seric 147233db8731Seric /* in the IPC case there is nothing to wait for */ 147375889e88Seric if (mci->mci_pid == 0) 147433db8731Seric return (EX_OK); 147533db8731Seric 147633db8731Seric /* wait for the mailer process to die and collect status */ 147775889e88Seric st = waitfor(mci->mci_pid); 1478588cad61Seric if (st == -1) 147978de67c1Seric { 1480c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1481588cad61Seric return (EX_SOFTWARE); 1482c579ef51Seric } 148333db8731Seric 148433db8731Seric /* see if it died a horrid death */ 1485c579ef51Seric if ((st & 0377) != 0) 1486c579ef51Seric { 1487c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1488c9be6216Seric 1489c9be6216Seric /* log the arguments */ 1490c9be6216Seric if (e->e_xfp != NULL) 1491c9be6216Seric { 1492c9be6216Seric register char **av; 1493c9be6216Seric 1494c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1495c9be6216Seric for (av = pv; *av != NULL; av++) 1496c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1497c9be6216Seric fprintf(e->e_xfp, "\n"); 1498c9be6216Seric } 1499c9be6216Seric 15005f73204aSeric ExitStat = EX_TEMPFAIL; 15015f73204aSeric return (EX_TEMPFAIL); 1502c579ef51Seric } 150333db8731Seric 150433db8731Seric /* normal death -- return status */ 1505588cad61Seric st = (st >> 8) & 0377; 1506588cad61Seric return (st); 1507c579ef51Seric } 1508c579ef51Seric /* 150925a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 151025a99e2eSeric ** 151125a99e2eSeric ** Parameters: 151225a99e2eSeric ** stat -- the status code from the mailer (high byte 151325a99e2eSeric ** only; core dumps must have been taken care of 151425a99e2eSeric ** already). 151581161401Seric ** m -- the mailer info for this mailer. 151681161401Seric ** mci -- the mailer connection info -- can be NULL if the 151781161401Seric ** response is given before the connection is made. 151881161401Seric ** e -- the current envelope. 151925a99e2eSeric ** 152025a99e2eSeric ** Returns: 1521db8841e9Seric ** none. 152225a99e2eSeric ** 152325a99e2eSeric ** Side Effects: 1524c1f9df2cSeric ** Errors may be incremented. 152525a99e2eSeric ** ExitStat may be set. 152625a99e2eSeric */ 152725a99e2eSeric 152881161401Seric giveresponse(stat, m, mci, e) 152925a99e2eSeric int stat; 1530588cad61Seric register MAILER *m; 153181161401Seric register MCI *mci; 1532198d9be0Seric ENVELOPE *e; 153325a99e2eSeric { 15349c16475dSeric register const char *statmsg; 153525a99e2eSeric extern char *SysExMsg[]; 153625a99e2eSeric register int i; 1537d4bd8f0eSbostic extern int N_SysEx; 1538198d9be0Seric char buf[MAXLINE]; 153925a99e2eSeric 154013bbc08cSeric /* 154113bbc08cSeric ** Compute status message from code. 154213bbc08cSeric */ 154313bbc08cSeric 154425a99e2eSeric i = stat - EX__BASE; 1545588cad61Seric if (stat == 0) 15466fe8c3bcSeric { 1547588cad61Seric statmsg = "250 Sent"; 1548ce5531bdSeric if (e->e_statmsg != NULL) 15496fe8c3bcSeric { 1550ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15516fe8c3bcSeric statmsg = buf; 15526fe8c3bcSeric } 15536fe8c3bcSeric } 1554588cad61Seric else if (i < 0 || i > N_SysEx) 1555588cad61Seric { 1556588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1557588cad61Seric stat = EX_UNAVAILABLE; 1558588cad61Seric statmsg = buf; 1559588cad61Seric } 1560198d9be0Seric else if (stat == EX_TEMPFAIL) 1561198d9be0Seric { 15627d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1563d4bd8f0eSbostic #ifdef NAMED_BIND 1564f28da541Smiriam if (h_errno == TRY_AGAIN) 1565f28da541Smiriam statmsg = errstring(h_errno+MAX_ERRNO); 1566f28da541Smiriam else 1567d4bd8f0eSbostic #endif 1568f28da541Smiriam { 15698557d168Seric if (errno != 0) 1570d87e85f3Seric statmsg = errstring(errno); 1571d87e85f3Seric else 1572d87e85f3Seric { 1573d87e85f3Seric #ifdef SMTP 1574d87e85f3Seric extern char SmtpError[]; 1575d87e85f3Seric 1576d87e85f3Seric statmsg = SmtpError; 15776c2c3107Seric #else /* SMTP */ 1578d87e85f3Seric statmsg = NULL; 15796c2c3107Seric #endif /* SMTP */ 1580d87e85f3Seric } 1581f28da541Smiriam } 1582d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1583d87e85f3Seric { 158487c9b3e7Seric (void) strcat(buf, ": "); 1585d87e85f3Seric (void) strcat(buf, statmsg); 15868557d168Seric } 1587198d9be0Seric statmsg = buf; 1588198d9be0Seric } 1589*f170942cSeric #ifdef NAMED_BIND 1590*f170942cSeric else if (stat == EX_NOHOST && h_errno != 0) 1591*f170942cSeric { 1592*f170942cSeric statmsg = errstring(h_errno + MAX_ERRNO); 1593*f170942cSeric (void) sprintf(buf, "%s (%s)", SysExMsg[i], statmsg); 1594*f170942cSeric statmsg = buf; 1595*f170942cSeric } 1596*f170942cSeric #endif 159725a99e2eSeric else 1598d87e85f3Seric { 159925a99e2eSeric statmsg = SysExMsg[i]; 16007d55540cSeric if (*statmsg++ == ':') 16017d55540cSeric { 16027d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 16037d55540cSeric statmsg = buf; 16047d55540cSeric } 1605d87e85f3Seric } 1606588cad61Seric 1607588cad61Seric /* 1608588cad61Seric ** Print the message as appropriate 1609588cad61Seric */ 1610588cad61Seric 1611198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1612e12d03eeSeric message(&statmsg[4], errstring(errno)); 161325a99e2eSeric else 161425a99e2eSeric { 1615c1f9df2cSeric Errors++; 1616e12d03eeSeric usrerr(statmsg, errstring(errno)); 161725a99e2eSeric } 161825a99e2eSeric 161925a99e2eSeric /* 162025a99e2eSeric ** Final cleanup. 162125a99e2eSeric ** Log a record of the transaction. Compute the new 162225a99e2eSeric ** ExitStat -- if we already had an error, stick with 162325a99e2eSeric ** that. 162425a99e2eSeric */ 162525a99e2eSeric 16262f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 162781161401Seric logdelivery(m, mci, &statmsg[4], e); 1628eb238f8cSeric 1629eb238f8cSeric if (stat != EX_TEMPFAIL) 1630eb238f8cSeric setstat(stat); 1631198d9be0Seric if (stat != EX_OK) 1632198d9be0Seric { 1633198d9be0Seric if (e->e_message != NULL) 1634198d9be0Seric free(e->e_message); 1635198d9be0Seric e->e_message = newstr(&statmsg[4]); 1636198d9be0Seric } 16378557d168Seric errno = 0; 1638d4bd8f0eSbostic #ifdef NAMED_BIND 1639f28da541Smiriam h_errno = 0; 1640d4bd8f0eSbostic #endif 1641eb238f8cSeric } 1642eb238f8cSeric /* 1643eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1644eb238f8cSeric ** 1645eb238f8cSeric ** Parameters: 164681161401Seric ** m -- the mailer info. Can be NULL for initial queue. 164781161401Seric ** mci -- the mailer connection info -- can be NULL if the 164881161401Seric ** log is occuring when no connection is active. 164981161401Seric ** stat -- the message to print for the status. 165081161401Seric ** e -- the current envelope. 1651eb238f8cSeric ** 1652eb238f8cSeric ** Returns: 1653eb238f8cSeric ** none 1654eb238f8cSeric ** 1655eb238f8cSeric ** Side Effects: 1656eb238f8cSeric ** none 1657eb238f8cSeric */ 1658eb238f8cSeric 165981161401Seric logdelivery(m, mci, stat, e) 166081161401Seric MAILER *m; 166181161401Seric register MCI *mci; 1662eb238f8cSeric char *stat; 1663b31e7f2bSeric register ENVELOPE *e; 16645cf56be3Seric { 1665eb238f8cSeric # ifdef LOG 1666d6acf3eeSeric char buf[512]; 16679507d1f9Seric 166848ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 166981161401Seric 167048ed5d33Seric if (m != NULL) 167171ff6caaSeric { 167248ed5d33Seric (void) strcat(buf, ", mailer="); 167348ed5d33Seric (void) strcat(buf, m->m_name); 167471ff6caaSeric } 167548ed5d33Seric 167648ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 167771ff6caaSeric { 167871ff6caaSeric # ifdef DAEMON 1679e2f2f828Seric extern SOCKADDR CurHostAddr; 168048ed5d33Seric # endif 168171ff6caaSeric 168248ed5d33Seric (void) strcat(buf, ", relay="); 168348ed5d33Seric (void) strcat(buf, mci->mci_host); 168448ed5d33Seric 168548ed5d33Seric # ifdef DAEMON 168648ed5d33Seric (void) strcat(buf, " ("); 1687e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 168848ed5d33Seric (void) strcat(buf, ")"); 168971ff6caaSeric # endif 169071ff6caaSeric } 16919507d1f9Seric else 169248ed5d33Seric { 169348ed5d33Seric char *p = macvalue('h', e); 16949507d1f9Seric 169548ed5d33Seric if (p != NULL && p[0] != '\0') 169648ed5d33Seric { 169748ed5d33Seric (void) strcat(buf, ", relay="); 169848ed5d33Seric (void) strcat(buf, p); 169948ed5d33Seric } 170048ed5d33Seric } 1701d6acf3eeSeric 1702d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1703d6acf3eeSeric e->e_id, e->e_to, buf, stat); 17046c2c3107Seric # endif /* LOG */ 170525a99e2eSeric } 170625a99e2eSeric /* 170751552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 170825a99e2eSeric ** 170951552439Seric ** This can be made an arbitrary message separator by changing $l 171051552439Seric ** 17119b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17129b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17139b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17149b6c17a6Seric ** this kind of antique garbage???? 171525a99e2eSeric ** 171625a99e2eSeric ** Parameters: 171751552439Seric ** fp -- the file to output to. 171851552439Seric ** m -- the mailer describing this entry. 171925a99e2eSeric ** 172025a99e2eSeric ** Returns: 172151552439Seric ** none 172225a99e2eSeric ** 172325a99e2eSeric ** Side Effects: 172451552439Seric ** outputs some text to fp. 172525a99e2eSeric */ 172625a99e2eSeric 1727b31e7f2bSeric putfromline(fp, m, e) 172851552439Seric register FILE *fp; 172951552439Seric register MAILER *m; 1730b31e7f2bSeric ENVELOPE *e; 173125a99e2eSeric { 17322bc47524Seric char *template = "\201l\n"; 173351552439Seric char buf[MAXLINE]; 173425a99e2eSeric 173557fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 173651552439Seric return; 173713bbc08cSeric 17382c7e1b8dSeric # ifdef UGLYUUCP 173957fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 174074b6e67bSeric { 1741ea09d6edSeric char *bang; 1742ea09d6edSeric char xbuf[MAXLINE]; 174374b6e67bSeric 1744ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17456c2c3107Seric bang = strchr(buf, '!'); 174674b6e67bSeric if (bang == NULL) 174708b25121Seric syserr("554 No ! in UUCP! (%s)", buf); 174874b6e67bSeric else 1749588cad61Seric { 1750ea09d6edSeric *bang++ = '\0'; 17512bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1752ea09d6edSeric template = xbuf; 175374b6e67bSeric } 1754588cad61Seric } 17556c2c3107Seric # endif /* UGLYUUCP */ 1756b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 175777b52738Seric putline(buf, fp, m); 1758bc6e2962Seric } 1759bc6e2962Seric /* 176051552439Seric ** PUTBODY -- put the body of a message. 176151552439Seric ** 176251552439Seric ** Parameters: 176351552439Seric ** fp -- file to output onto. 176477b52738Seric ** m -- a mailer descriptor to control output format. 17659a6a5f55Seric ** e -- the envelope to put out. 176603c02fdeSeric ** separator -- if non-NULL, a message separator that must 176703c02fdeSeric ** not be permitted in the resulting message. 176851552439Seric ** 176951552439Seric ** Returns: 177051552439Seric ** none. 177151552439Seric ** 177251552439Seric ** Side Effects: 177351552439Seric ** The message is written onto fp. 177451552439Seric */ 177551552439Seric 177603c02fdeSeric putbody(fp, m, e, separator) 177751552439Seric FILE *fp; 1778588cad61Seric MAILER *m; 17799a6a5f55Seric register ENVELOPE *e; 178003c02fdeSeric char *separator; 178151552439Seric { 178277b52738Seric char buf[MAXLINE]; 178351552439Seric 178451552439Seric /* 178551552439Seric ** Output the body of the message 178651552439Seric */ 178751552439Seric 17889a6a5f55Seric if (e->e_dfp == NULL) 178951552439Seric { 17909a6a5f55Seric if (e->e_df != NULL) 17919a6a5f55Seric { 17929a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 17939a6a5f55Seric if (e->e_dfp == NULL) 17948f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 17958f9146b0Srick e->e_df, e->e_to, e->e_from); 17969a6a5f55Seric } 17979a6a5f55Seric else 179877b52738Seric putline("<<< No Message Collected >>>", fp, m); 17999a6a5f55Seric } 18009a6a5f55Seric if (e->e_dfp != NULL) 18019a6a5f55Seric { 18029a6a5f55Seric rewind(e->e_dfp); 180377b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 180424fc8aeeSeric { 180524fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1806d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18073462ad9eSeric (void) putc('>', fp); 180803c02fdeSeric if (buf[0] == '-' && buf[1] == '-' && separator != NULL) 180903c02fdeSeric { 181003c02fdeSeric /* possible separator */ 181103c02fdeSeric int sl = strlen(separator); 181203c02fdeSeric 181303c02fdeSeric if (strncmp(&buf[2], separator, sl) == 0) 181403c02fdeSeric (void) putc(' ', fp); 181503c02fdeSeric } 181677b52738Seric putline(buf, fp, m); 181724fc8aeeSeric } 181851552439Seric 18199a6a5f55Seric if (ferror(e->e_dfp)) 182051552439Seric { 182151552439Seric syserr("putbody: read error"); 182251552439Seric ExitStat = EX_IOERR; 182351552439Seric } 182451552439Seric } 182551552439Seric 18260890ba1fSeric /* some mailers want extra blank line at end of message */ 18270890ba1fSeric if (bitnset(M_BLANKEND, m->m_flags) && buf[0] != '\0' && buf[0] != '\n') 18280890ba1fSeric putline("", fp, m); 18290890ba1fSeric 183051552439Seric (void) fflush(fp); 183151552439Seric if (ferror(fp) && errno != EPIPE) 183251552439Seric { 183351552439Seric syserr("putbody: write error"); 183451552439Seric ExitStat = EX_IOERR; 183551552439Seric } 183651552439Seric errno = 0; 183725a99e2eSeric } 183825a99e2eSeric /* 183925a99e2eSeric ** MAILFILE -- Send a message to a file. 184025a99e2eSeric ** 1841f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1842f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1843f129ec7dSeric ** rather than the real user. Obviously, this only works if 1844f129ec7dSeric ** sendmail runs as root. 1845f129ec7dSeric ** 1846588cad61Seric ** This could be done as a subordinate mailer, except that it 1847588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1848588cad61Seric ** view this as being sufficiently important as to include it 1849588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1850588cad61Seric ** to create another process plus some pipes to save the message. 1851588cad61Seric ** 185225a99e2eSeric ** Parameters: 185325a99e2eSeric ** filename -- the name of the file to send to. 18546259796dSeric ** ctladdr -- the controlling address header -- includes 18556259796dSeric ** the userid/groupid to be when sending. 185625a99e2eSeric ** 185725a99e2eSeric ** Returns: 185825a99e2eSeric ** The exit code associated with the operation. 185925a99e2eSeric ** 186025a99e2eSeric ** Side Effects: 186125a99e2eSeric ** none. 186225a99e2eSeric */ 186325a99e2eSeric 1864b31e7f2bSeric mailfile(filename, ctladdr, e) 186525a99e2eSeric char *filename; 18666259796dSeric ADDRESS *ctladdr; 1867b31e7f2bSeric register ENVELOPE *e; 186825a99e2eSeric { 186925a99e2eSeric register FILE *f; 187032d19d43Seric register int pid; 187115d084d5Seric int mode; 187225a99e2eSeric 1873671745f3Seric if (tTd(11, 1)) 1874671745f3Seric { 1875671745f3Seric printf("mailfile %s\n ctladdr=", filename); 1876671745f3Seric printaddr(ctladdr, FALSE); 1877671745f3Seric } 1878671745f3Seric 1879*f170942cSeric if (e->e_xfp != NULL) 1880*f170942cSeric fflush(e->e_xfp); 1881*f170942cSeric 188232d19d43Seric /* 188332d19d43Seric ** Fork so we can change permissions here. 188432d19d43Seric ** Note that we MUST use fork, not vfork, because of 188532d19d43Seric ** the complications of calling subroutines, etc. 188632d19d43Seric */ 188732d19d43Seric 188832d19d43Seric DOFORK(fork); 188932d19d43Seric 189032d19d43Seric if (pid < 0) 189132d19d43Seric return (EX_OSERR); 189232d19d43Seric else if (pid == 0) 189332d19d43Seric { 189432d19d43Seric /* child -- actually write to file */ 1895f129ec7dSeric struct stat stb; 1896f129ec7dSeric 18970984da9fSeric (void) signal(SIGINT, SIG_DFL); 18980984da9fSeric (void) signal(SIGHUP, SIG_DFL); 18990984da9fSeric (void) signal(SIGTERM, SIG_DFL); 19003462ad9eSeric (void) umask(OldUmask); 190195f16dc0Seric 1902f129ec7dSeric if (stat(filename, &stb) < 0) 19033a98e7eaSeric stb.st_mode = FileMode; 190415d084d5Seric mode = stb.st_mode; 190595f16dc0Seric 190695f16dc0Seric /* limit the errors to those actually caused in the child */ 190795f16dc0Seric errno = 0; 190895f16dc0Seric ExitStat = EX_OK; 190995f16dc0Seric 1910f129ec7dSeric if (bitset(0111, stb.st_mode)) 1911f129ec7dSeric exit(EX_CANTCREAT); 191203827b5fSeric if (ctladdr == NULL) 19138f9146b0Srick ctladdr = &e->e_from; 191415d084d5Seric else 191515d084d5Seric { 191615d084d5Seric /* ignore setuid and setgid bits */ 191715d084d5Seric mode &= ~(S_ISGID|S_ISUID); 191815d084d5Seric } 191915d084d5Seric 19208f9146b0Srick /* we have to open the dfile BEFORE setuid */ 19218f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 19228f9146b0Srick { 19238f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 192495f16dc0Seric if (e->e_dfp == NULL) 192595f16dc0Seric { 19268f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 19278f9146b0Srick e->e_df, e->e_to, e->e_from); 19288f9146b0Srick } 19298f9146b0Srick } 19308f9146b0Srick 193115d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1932e36b99e2Seric { 193395f16dc0Seric if (ctladdr->q_uid == 0) 193495f16dc0Seric { 1935e36b99e2Seric (void) setgid(DefGid); 1936898a126bSbostic (void) initgroups(DefUser, DefGid); 193795f16dc0Seric } 193895f16dc0Seric else 193995f16dc0Seric { 19406259796dSeric (void) setgid(ctladdr->q_gid); 1941898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1942898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1943898a126bSbostic ctladdr->q_gid); 1944898a126bSbostic } 1945e36b99e2Seric } 194615d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1947e36b99e2Seric { 1948e36b99e2Seric if (ctladdr->q_uid == 0) 1949e36b99e2Seric (void) setuid(DefUid); 1950e36b99e2Seric else 19516259796dSeric (void) setuid(ctladdr->q_uid); 1952e36b99e2Seric } 195395f16dc0Seric FileName = filename; 195495f16dc0Seric LineNumber = 0; 19553a98e7eaSeric f = dfopen(filename, O_WRONLY|O_CREAT|O_APPEND, FileMode); 195625a99e2eSeric if (f == NULL) 195795f16dc0Seric { 195808b25121Seric message("554 cannot open"); 195932d19d43Seric exit(EX_CANTCREAT); 196095f16dc0Seric } 196125a99e2eSeric 19620331ce05Seric putfromline(f, FileMailer, e); 19630331ce05Seric (*e->e_puthdr)(f, FileMailer, e); 19640331ce05Seric putline("\n", f, FileMailer); 196503c02fdeSeric (*e->e_putbody)(f, FileMailer, e, NULL); 19660331ce05Seric putline("\n", f, FileMailer); 196795f16dc0Seric if (ferror(f)) 196895f16dc0Seric { 196908b25121Seric message("451 I/O error"); 197095f16dc0Seric setstat(EX_IOERR); 197195f16dc0Seric } 1972ee4b0922Seric (void) xfclose(f, "mailfile", filename); 197332d19d43Seric (void) fflush(stdout); 1974e36b99e2Seric 197527628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1976c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 197795f16dc0Seric exit(ExitStat); 197813bbc08cSeric /*NOTREACHED*/ 197932d19d43Seric } 198032d19d43Seric else 198132d19d43Seric { 198232d19d43Seric /* parent -- wait for exit status */ 1983588cad61Seric int st; 198432d19d43Seric 1985588cad61Seric st = waitfor(pid); 1986588cad61Seric if ((st & 0377) != 0) 1987588cad61Seric return (EX_UNAVAILABLE); 1988588cad61Seric else 1989588cad61Seric return ((st >> 8) & 0377); 19908f9146b0Srick /*NOTREACHED*/ 199132d19d43Seric } 199225a99e2eSeric } 1993ea4dc939Seric /* 1994e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 1995e103b48fSeric ** 1996e103b48fSeric ** The signature describes how we are going to send this -- it 1997e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 1998e103b48fSeric ** an ordered list of MX hosts. 1999e103b48fSeric ** 2000e103b48fSeric ** Parameters: 2001e103b48fSeric ** m -- the mailer describing this host. 2002e103b48fSeric ** host -- the host name. 2003e103b48fSeric ** e -- the current envelope. 2004e103b48fSeric ** 2005e103b48fSeric ** Returns: 2006e103b48fSeric ** The signature for this host. 2007e103b48fSeric ** 2008e103b48fSeric ** Side Effects: 2009e103b48fSeric ** Can tweak the symbol table. 2010e103b48fSeric */ 2011e103b48fSeric 2012e103b48fSeric char * 2013e103b48fSeric hostsignature(m, host, e) 2014e103b48fSeric register MAILER *m; 2015e103b48fSeric char *host; 2016e103b48fSeric ENVELOPE *e; 2017e103b48fSeric { 2018e103b48fSeric register char *p; 2019e103b48fSeric register STAB *s; 2020e103b48fSeric int i; 2021e103b48fSeric int len; 2022e103b48fSeric #ifdef NAMED_BIND 2023e103b48fSeric int nmx; 2024e103b48fSeric auto int rcode; 2025bafdc4e5Seric char *hp; 2026bafdc4e5Seric char *endp; 2027516782b4Seric int oldoptions; 2028e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 2029e103b48fSeric #endif 2030e103b48fSeric 2031e103b48fSeric /* 2032e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 2033e103b48fSeric */ 2034e103b48fSeric 2035e103b48fSeric p = m->m_mailer; 2036e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2037e103b48fSeric { 2038e103b48fSeric /* just an ordinary mailer */ 2039e103b48fSeric return host; 2040e103b48fSeric } 2041e103b48fSeric 2042e103b48fSeric /* 2043e103b48fSeric ** If it is a numeric address, just return it. 2044e103b48fSeric */ 2045e103b48fSeric 2046e103b48fSeric if (host[0] == '[') 2047e103b48fSeric return host; 2048e103b48fSeric 2049e103b48fSeric /* 2050e103b48fSeric ** Look it up in the symbol table. 2051e103b48fSeric */ 2052e103b48fSeric 2053e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2054e103b48fSeric if (s->s_hostsig != NULL) 2055e103b48fSeric return s->s_hostsig; 2056e103b48fSeric 2057e103b48fSeric /* 2058e103b48fSeric ** Not already there -- create a signature. 2059e103b48fSeric */ 2060e103b48fSeric 2061e103b48fSeric #ifdef NAMED_BIND 2062516782b4Seric if (ConfigLevel < 2) 2063516782b4Seric { 2064516782b4Seric oldoptions = _res.options; 2065516782b4Seric _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2066516782b4Seric } 2067516782b4Seric 2068bafdc4e5Seric for (hp = host; hp != NULL; hp = endp) 2069bafdc4e5Seric { 2070bafdc4e5Seric endp = strchr(hp, ':'); 2071bafdc4e5Seric if (endp != NULL) 2072bafdc4e5Seric *endp = '\0'; 2073bafdc4e5Seric 20747bf809e6Seric nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 20757d55540cSeric 2076e103b48fSeric if (nmx <= 0) 2077e103b48fSeric { 2078e103b48fSeric register MCI *mci; 2079e103b48fSeric extern int errno; 2080e103b48fSeric 2081e103b48fSeric /* update the connection info for this host */ 2082bafdc4e5Seric mci = mci_get(hp, m); 2083e103b48fSeric mci->mci_exitstat = rcode; 2084e103b48fSeric mci->mci_errno = errno; 2085*f170942cSeric #ifdef NAMED_BIND 2086*f170942cSeric mci->mci_herrno = h_errno; 2087*f170942cSeric #endif 2088e103b48fSeric 2089e103b48fSeric /* and return the original host name as the signature */ 2090bafdc4e5Seric nmx = 1; 2091bafdc4e5Seric mxhosts[0] = hp; 2092e103b48fSeric } 2093e103b48fSeric 2094e103b48fSeric len = 0; 2095e103b48fSeric for (i = 0; i < nmx; i++) 2096e103b48fSeric { 2097e103b48fSeric len += strlen(mxhosts[i]) + 1; 2098e103b48fSeric } 2099bafdc4e5Seric if (s->s_hostsig != NULL) 2100bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2101bafdc4e5Seric p = xalloc(len); 2102bafdc4e5Seric if (s->s_hostsig != NULL) 2103bafdc4e5Seric { 2104bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2105bafdc4e5Seric free(s->s_hostsig); 2106bafdc4e5Seric s->s_hostsig = p; 2107bafdc4e5Seric p += strlen(p); 2108bafdc4e5Seric *p++ = ':'; 2109bafdc4e5Seric } 2110bafdc4e5Seric else 2111bafdc4e5Seric s->s_hostsig = p; 2112e103b48fSeric for (i = 0; i < nmx; i++) 2113e103b48fSeric { 2114e103b48fSeric if (i != 0) 2115e103b48fSeric *p++ = ':'; 2116e103b48fSeric strcpy(p, mxhosts[i]); 2117e103b48fSeric p += strlen(p); 2118e103b48fSeric } 2119bafdc4e5Seric if (endp != NULL) 2120bafdc4e5Seric *endp++ = ':'; 2121bafdc4e5Seric } 2122e103b48fSeric makelower(s->s_hostsig); 2123516782b4Seric if (ConfigLevel < 2) 2124516782b4Seric _res.options = oldoptions; 2125e103b48fSeric #else 2126e103b48fSeric /* not using BIND -- the signature is just the host name */ 2127e103b48fSeric s->s_hostsig = host; 2128e103b48fSeric #endif 2129e103b48fSeric if (tTd(17, 1)) 2130e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2131e103b48fSeric return s->s_hostsig; 2132e103b48fSeric } 2133