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*7bf809e6Seric static char sccsid[] = "@(#)deliver.c 6.66 (Berkeley) 04/26/93"; 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; 506103d9b4Seric bool announcequeueup; 519c9e68d9Seric 529c9e68d9Seric /* determine actual delivery mode */ 539c9e68d9Seric if (mode == SM_DEFAULT) 549c9e68d9Seric { 559c9e68d9Seric extern bool shouldqueue(); 569c9e68d9Seric 579c9e68d9Seric mode = e->e_sendmode; 589c9e68d9Seric if (mode != SM_VERIFY && 599c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 609c9e68d9Seric mode = SM_QUEUE; 616103d9b4Seric announcequeueup = mode == SM_QUEUE; 629c9e68d9Seric } 636103d9b4Seric else 646103d9b4Seric announcequeueup = FALSE; 659c9e68d9Seric 669c9e68d9Seric if (tTd(13, 1)) 679c9e68d9Seric { 689c9e68d9Seric printf("\nSENDALL: mode %c, e_from ", mode); 699c9e68d9Seric printaddr(&e->e_from, FALSE); 709c9e68d9Seric printf("sendqueue:\n"); 719c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 729c9e68d9Seric } 739c9e68d9Seric 749c9e68d9Seric /* 759c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 769c9e68d9Seric ** Check to make sure the hop count is reasonable. 779c9e68d9Seric ** Delete sends to the sender in mailing lists. 789c9e68d9Seric */ 799c9e68d9Seric 809c9e68d9Seric CurEnv = e; 819c9e68d9Seric 829c9e68d9Seric if (e->e_hopcount > MaxHopCount) 839c9e68d9Seric { 849c9e68d9Seric errno = 0; 859c9e68d9Seric syserr("554 too many hops %d (%d max): from %s, to %s", 869c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 879c9e68d9Seric e->e_sendqueue->q_paddr); 889c9e68d9Seric return; 899c9e68d9Seric } 909c9e68d9Seric 919c9e68d9Seric if (!MeToo) 929c9e68d9Seric { 939c9e68d9Seric extern ADDRESS *recipient(); 949c9e68d9Seric 959c9e68d9Seric if (tTd(13, 5)) 969c9e68d9Seric { 979c9e68d9Seric printf("sendall: QDONTSEND "); 989c9e68d9Seric printaddr(&e->e_from, FALSE); 999c9e68d9Seric } 1009c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 1019c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1029c9e68d9Seric } 1039c9e68d9Seric 104ce5531bdSeric /* 105ce5531bdSeric ** Handle alias owners. 106ce5531bdSeric ** 107ce5531bdSeric ** We scan up the q_alias chain looking for owners. 108ce5531bdSeric ** We discard owners that are the same as the return path. 109ce5531bdSeric */ 110ce5531bdSeric 111ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 112ce5531bdSeric { 113ce5531bdSeric register struct address *a; 114ce5531bdSeric 115ce5531bdSeric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 116ce5531bdSeric continue; 117ce5531bdSeric if (a != NULL) 118ce5531bdSeric q->q_owner = a->q_owner; 119ce5531bdSeric 120ce5531bdSeric if (q->q_owner != NULL && 121ce5531bdSeric !bitset(QDONTSEND, q->q_flags) && 122ce5531bdSeric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 123ce5531bdSeric q->q_owner = NULL; 124ce5531bdSeric } 125ce5531bdSeric 126ce5531bdSeric owner = ""; 127ce5531bdSeric otherowners = 1; 128ce5531bdSeric while (owner != NULL && otherowners > 0) 129ce5531bdSeric { 130ce5531bdSeric owner = NULL; 131ce5531bdSeric otherowners = 0; 132ce5531bdSeric 133ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 134ce5531bdSeric { 135ce5531bdSeric if (bitset(QDONTSEND, q->q_flags)) 136ce5531bdSeric continue; 137ce5531bdSeric 138ce5531bdSeric if (q->q_owner != NULL) 139ce5531bdSeric { 140ce5531bdSeric if (owner == NULL) 141ce5531bdSeric owner = q->q_owner; 142ce5531bdSeric else if (owner != q->q_owner) 143ce5531bdSeric { 144ce5531bdSeric if (strcmp(owner, q->q_owner) == 0) 145ce5531bdSeric { 146ce5531bdSeric /* make future comparisons cheap */ 147ce5531bdSeric q->q_owner = owner; 148ce5531bdSeric } 149ce5531bdSeric else 150ce5531bdSeric { 151ce5531bdSeric otherowners++; 152ce5531bdSeric } 153ce5531bdSeric owner = q->q_owner; 154ce5531bdSeric } 155ce5531bdSeric } 156ce5531bdSeric else 157ce5531bdSeric { 158ce5531bdSeric otherowners++; 159ce5531bdSeric } 160ce5531bdSeric } 161ce5531bdSeric 162ce5531bdSeric if (owner != NULL && otherowners > 0) 163ce5531bdSeric { 164ce5531bdSeric extern HDR *copyheader(); 165ce5531bdSeric extern ADDRESS *copyqueue(); 166ce5531bdSeric 167ce5531bdSeric /* 168ce5531bdSeric ** Split this envelope into two. 169ce5531bdSeric */ 170ce5531bdSeric 171ce5531bdSeric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 172ce5531bdSeric *ee = *e; 173ce5531bdSeric ee->e_id = NULL; 174ce5531bdSeric (void) queuename(ee, '\0'); 175ce5531bdSeric 176ce5531bdSeric if (tTd(13, 1)) 177ce5531bdSeric printf("sendall: split %s into %s\n", 178ce5531bdSeric e->e_id, ee->e_id); 179ce5531bdSeric 180ce5531bdSeric ee->e_header = copyheader(e->e_header); 181ce5531bdSeric ee->e_sendqueue = copyqueue(e->e_sendqueue); 182ce5531bdSeric ee->e_errorqueue = copyqueue(e->e_errorqueue); 183ce5531bdSeric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS); 184ce5531bdSeric setsender(owner, ee, NULL, TRUE); 185ce5531bdSeric if (tTd(13, 5)) 186ce5531bdSeric { 187ce5531bdSeric printf("sendall(split): QDONTSEND "); 188ce5531bdSeric printaddr(&ee->e_from, FALSE); 189ce5531bdSeric } 190ce5531bdSeric ee->e_from.q_flags |= QDONTSEND; 191ce5531bdSeric ee->e_dfp = NULL; 192ce5531bdSeric ee->e_xfp = NULL; 193ce5531bdSeric ee->e_lockfp = NULL; 194ce5531bdSeric ee->e_df = NULL; 195ce5531bdSeric ee->e_errormode = EM_MAIL; 196ce5531bdSeric ee->e_sibling = splitenv; 197ce5531bdSeric splitenv = ee; 198ce5531bdSeric 199ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 200ce5531bdSeric if (q->q_owner == owner) 201ce5531bdSeric q->q_flags |= QDONTSEND; 202ce5531bdSeric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 203ce5531bdSeric if (q->q_owner != owner) 204ce5531bdSeric q->q_flags |= QDONTSEND; 205ce5531bdSeric 206ce5531bdSeric if (e->e_df != NULL && mode != SM_VERIFY) 207ce5531bdSeric { 208ce5531bdSeric ee->e_dfp = NULL; 209ce5531bdSeric ee->e_df = newstr(queuename(ee, 'd')); 210ce5531bdSeric if (link(e->e_df, ee->e_df) < 0) 211ce5531bdSeric { 212ce5531bdSeric syserr("sendall: link(%s, %s)", 213ce5531bdSeric e->e_df, ee->e_df); 214ce5531bdSeric } 215ce5531bdSeric } 216ce5531bdSeric 217ce5531bdSeric if (mode != SM_VERIFY) 218ce5531bdSeric openxscript(ee); 219ce5531bdSeric #ifdef LOG 220ce5531bdSeric if (LogLevel > 4) 221ce5531bdSeric syslog(LOG_INFO, "%s: clone %s", 222ce5531bdSeric ee->e_id, e->e_id); 223ce5531bdSeric #endif 224ce5531bdSeric } 225ce5531bdSeric } 226ce5531bdSeric 227ce5531bdSeric if (owner != NULL) 228ce5531bdSeric { 229ce5531bdSeric setsender(owner, e, NULL, TRUE); 230ce5531bdSeric if (tTd(13, 5)) 231ce5531bdSeric { 232ce5531bdSeric printf("sendall(owner): QDONTSEND "); 233ce5531bdSeric printaddr(&e->e_from, FALSE); 234ce5531bdSeric } 235ce5531bdSeric e->e_from.q_flags |= QDONTSEND; 236ce5531bdSeric e->e_errormode = EM_MAIL; 237ce5531bdSeric } 238ce5531bdSeric 239c1ac89b1Seric # ifdef QUEUE 240c1ac89b1Seric if ((mode == SM_QUEUE || mode == SM_FORK || 241c1ac89b1Seric (mode != SM_VERIFY && SuperSafe)) && 242c1ac89b1Seric !bitset(EF_INQUEUE, e->e_flags)) 243c1ac89b1Seric { 244c1ac89b1Seric /* be sure everything is instantiated in the queue */ 2456103d9b4Seric queueup(e, TRUE, announcequeueup); 246ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2476103d9b4Seric queueup(ee, TRUE, announcequeueup); 248c1ac89b1Seric } 249c1ac89b1Seric #endif /* QUEUE */ 250c1ac89b1Seric 251ce5531bdSeric if (splitenv != NULL) 252ce5531bdSeric { 253ce5531bdSeric if (tTd(13, 1)) 254ce5531bdSeric { 255ce5531bdSeric printf("\nsendall: Split queue; remaining queue:\n"); 256ce5531bdSeric printaddr(e->e_sendqueue, TRUE); 257ce5531bdSeric } 258ce5531bdSeric 259ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 260ce5531bdSeric { 261ce5531bdSeric CurEnv = ee; 262ce5531bdSeric sendenvelope(ee, mode); 263ce5531bdSeric } 264ce5531bdSeric 265ce5531bdSeric CurEnv = e; 266ce5531bdSeric } 267ce5531bdSeric sendenvelope(e, mode); 268ce5531bdSeric 269ce5531bdSeric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 270ce5531bdSeric dropenvelope(splitenv); 271ce5531bdSeric } 272ce5531bdSeric 273ce5531bdSeric sendenvelope(e, mode) 274ce5531bdSeric register ENVELOPE *e; 275ce5531bdSeric char mode; 276ce5531bdSeric { 277ce5531bdSeric bool oldverbose; 278ce5531bdSeric int pid; 279ce5531bdSeric register ADDRESS *q; 280ce5531bdSeric #ifdef LOCKF 281ce5531bdSeric struct flock lfd; 282ce5531bdSeric #endif 283ce5531bdSeric 284ce5531bdSeric oldverbose = Verbose; 285c1ac89b1Seric switch (mode) 286c1ac89b1Seric { 287c1ac89b1Seric case SM_VERIFY: 288c1ac89b1Seric Verbose = TRUE; 289c1ac89b1Seric break; 290c1ac89b1Seric 291c1ac89b1Seric case SM_QUEUE: 292c1ac89b1Seric queueonly: 293c1ac89b1Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 294c1ac89b1Seric return; 295c1ac89b1Seric 296c1ac89b1Seric case SM_FORK: 297c1ac89b1Seric if (e->e_xfp != NULL) 298c1ac89b1Seric (void) fflush(e->e_xfp); 299c1ac89b1Seric 300c1ac89b1Seric # ifdef LOCKF 301c1ac89b1Seric /* 302c1ac89b1Seric ** Since lockf has the interesting semantic that the 303c1ac89b1Seric ** lock is lost when we fork, we have to risk losing 304c1ac89b1Seric ** the lock here by closing before the fork, and then 305c1ac89b1Seric ** trying to get it back in the child. 306c1ac89b1Seric */ 307c1ac89b1Seric 308c1ac89b1Seric if (e->e_lockfp != NULL) 309c1ac89b1Seric { 310c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 311c1ac89b1Seric e->e_lockfp = NULL; 312c1ac89b1Seric } 313c1ac89b1Seric # endif /* LOCKF */ 314c1ac89b1Seric 315c1ac89b1Seric pid = fork(); 316c1ac89b1Seric if (pid < 0) 317c1ac89b1Seric { 318c1ac89b1Seric goto queueonly; 319c1ac89b1Seric } 320c1ac89b1Seric else if (pid > 0) 321c1ac89b1Seric { 322c1ac89b1Seric /* be sure we leave the temp files to our child */ 323c1ac89b1Seric e->e_id = e->e_df = NULL; 324c1ac89b1Seric # ifndef LOCKF 325c1ac89b1Seric if (e->e_lockfp != NULL) 326c1ac89b1Seric { 327c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 328c1ac89b1Seric e->e_lockfp = NULL; 329c1ac89b1Seric } 330c1ac89b1Seric # endif 331c1ac89b1Seric 332c1ac89b1Seric /* close any random open files in the envelope */ 333c1ac89b1Seric if (e->e_dfp != NULL) 334c1ac89b1Seric { 335c1ac89b1Seric (void) xfclose(e->e_dfp, "sendenvelope", "dfp"); 336c1ac89b1Seric e->e_dfp = NULL; 337c1ac89b1Seric } 338c1ac89b1Seric if (e->e_xfp != NULL) 339c1ac89b1Seric { 340c1ac89b1Seric (void) xfclose(e->e_xfp, "sendenvelope", "xfp"); 341c1ac89b1Seric e->e_xfp = NULL; 342c1ac89b1Seric } 343c1ac89b1Seric return; 344c1ac89b1Seric } 345c1ac89b1Seric 346c1ac89b1Seric /* double fork to avoid zombies */ 347c1ac89b1Seric if (fork() > 0) 348c1ac89b1Seric exit(EX_OK); 349c1ac89b1Seric 350c1ac89b1Seric /* be sure we are immune from the terminal */ 351c1ac89b1Seric disconnect(FALSE, e); 352c1ac89b1Seric 353c1ac89b1Seric # ifdef LOCKF 354c1ac89b1Seric /* 355c1ac89b1Seric ** Now try to get our lock back. 356c1ac89b1Seric */ 357c1ac89b1Seric 358c1ac89b1Seric lfd.l_type = F_WRLCK; 359c1ac89b1Seric lfd.l_whence = lfd.l_start = lfd.l_len = 0; 360c1ac89b1Seric e->e_lockfp = fopen(queuename(e, 'q'), "r+"); 361c1ac89b1Seric if (e->e_lockfp == NULL || 362c1ac89b1Seric fcntl(fileno(e->e_lockfp), F_SETLK, &lfd) < 0) 363c1ac89b1Seric { 364c1ac89b1Seric /* oops.... lost it */ 365c1ac89b1Seric if (tTd(13, 1)) 366c1ac89b1Seric printf("sendenvelope: %s lost lock: lockfp=%x, %s\n", 367c1ac89b1Seric e->e_id, e->e_lockfp, errstring(errno)); 368c1ac89b1Seric 369c1ac89b1Seric # ifdef LOG 370c1ac89b1Seric if (LogLevel > 29) 371c1ac89b1Seric syslog(LOG_NOTICE, "%s: lost lock: %m", 372c1ac89b1Seric e->e_id); 373c1ac89b1Seric # endif /* LOG */ 374c1ac89b1Seric exit(EX_OK); 375c1ac89b1Seric } 376c1ac89b1Seric # endif /* LOCKF */ 377c1ac89b1Seric 378c1ac89b1Seric /* 379c1ac89b1Seric ** Close any cached connections. 380c1ac89b1Seric ** 381c1ac89b1Seric ** We don't send the QUIT protocol because the parent 382c1ac89b1Seric ** still knows about the connection. 383c1ac89b1Seric ** 384c1ac89b1Seric ** This should only happen when delivering an error 385c1ac89b1Seric ** message. 386c1ac89b1Seric */ 387c1ac89b1Seric 388c1ac89b1Seric mci_flush(FALSE, NULL); 389c1ac89b1Seric 390c1ac89b1Seric break; 391c1ac89b1Seric } 392c1ac89b1Seric 393c1ac89b1Seric /* 3949c9e68d9Seric ** Run through the list and send everything. 3959c9e68d9Seric */ 3969c9e68d9Seric 3979c9e68d9Seric e->e_nsent = 0; 3989c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 3999c9e68d9Seric { 4009c9e68d9Seric if (mode == SM_VERIFY) 4019c9e68d9Seric { 4029c9e68d9Seric e->e_to = q->q_paddr; 4039c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4049c9e68d9Seric message("deliverable"); 4059c9e68d9Seric } 4069c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4079c9e68d9Seric { 4089c9e68d9Seric # ifdef QUEUE 4099c9e68d9Seric /* 4109c9e68d9Seric ** Checkpoint the send list every few addresses 4119c9e68d9Seric */ 4129c9e68d9Seric 4139c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4149c9e68d9Seric { 4159c9e68d9Seric queueup(e, TRUE, FALSE); 4169c9e68d9Seric e->e_nsent = 0; 4179c9e68d9Seric } 4189c9e68d9Seric # endif /* QUEUE */ 4199c9e68d9Seric (void) deliver(e, q); 4209c9e68d9Seric } 4219c9e68d9Seric } 4229c9e68d9Seric Verbose = oldverbose; 4239c9e68d9Seric 4249c9e68d9Seric /* 4259c9e68d9Seric ** Now run through and check for errors. 4269c9e68d9Seric */ 4279c9e68d9Seric 4289c9e68d9Seric if (mode == SM_VERIFY) 4299c9e68d9Seric { 4309c9e68d9Seric return; 4319c9e68d9Seric } 4329c9e68d9Seric 4339c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4349c9e68d9Seric { 4359c9e68d9Seric if (tTd(13, 3)) 4369c9e68d9Seric { 4379c9e68d9Seric printf("Checking "); 4389c9e68d9Seric printaddr(q, FALSE); 4399c9e68d9Seric } 4409c9e68d9Seric 4419c9e68d9Seric /* only send errors if the message failed */ 442ce5531bdSeric if (!bitset(QBADADDR, q->q_flags) || 443ce5531bdSeric bitset(QDONTSEND, q->q_flags)) 4449c9e68d9Seric continue; 4459c9e68d9Seric 4469c9e68d9Seric e->e_flags |= EF_FATALERRS; 4479c9e68d9Seric 4489c9e68d9Seric if (q->q_owner == NULL && strcmp(e->e_from.q_paddr, "<>") != 0) 4499c9e68d9Seric (void) sendtolist(e->e_from.q_paddr, NULL, 4509c9e68d9Seric &e->e_errorqueue, e); 4519c9e68d9Seric } 4529c9e68d9Seric 4539c9e68d9Seric if (mode == SM_FORK) 4549c9e68d9Seric finis(); 4559c9e68d9Seric } 4569c9e68d9Seric /* 4579c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4589c9e68d9Seric ** 4599c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4609c9e68d9Seric ** two processes on the same stack!!! 4619c9e68d9Seric ** 4629c9e68d9Seric ** Parameters: 4639c9e68d9Seric ** none. 4649c9e68d9Seric ** 4659c9e68d9Seric ** Returns: 4669c9e68d9Seric ** From a macro??? You've got to be kidding! 4679c9e68d9Seric ** 4689c9e68d9Seric ** Side Effects: 4699c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4709c9e68d9Seric ** pid of child in parent, zero in child. 4719c9e68d9Seric ** -1 on unrecoverable error. 4729c9e68d9Seric ** 4739c9e68d9Seric ** Notes: 4749c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4759c9e68d9Seric ** vfork for you..... 4769c9e68d9Seric */ 4779c9e68d9Seric 4789c9e68d9Seric # define NFORKTRIES 5 4799c9e68d9Seric 4809c9e68d9Seric # ifndef FORK 4819c9e68d9Seric # define FORK fork 4829c9e68d9Seric # endif 4839c9e68d9Seric 4849c9e68d9Seric # define DOFORK(fORKfN) \ 4859c9e68d9Seric {\ 4869c9e68d9Seric register int i;\ 4879c9e68d9Seric \ 4889c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 4899c9e68d9Seric {\ 4909c9e68d9Seric pid = fORKfN();\ 4919c9e68d9Seric if (pid >= 0)\ 4929c9e68d9Seric break;\ 4939c9e68d9Seric if (i > 0)\ 4949c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 4959c9e68d9Seric }\ 4969c9e68d9Seric } 4979c9e68d9Seric /* 4989c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 4999c9e68d9Seric ** 5009c9e68d9Seric ** Parameters: 5019c9e68d9Seric ** none. 5029c9e68d9Seric ** 5039c9e68d9Seric ** Returns: 5049c9e68d9Seric ** pid of child in parent. 5059c9e68d9Seric ** zero in child. 5069c9e68d9Seric ** -1 on error. 5079c9e68d9Seric ** 5089c9e68d9Seric ** Side Effects: 5099c9e68d9Seric ** returns twice, once in parent and once in child. 5109c9e68d9Seric */ 5119c9e68d9Seric 5129c9e68d9Seric dofork() 5139c9e68d9Seric { 5149c9e68d9Seric register int pid; 5159c9e68d9Seric 5169c9e68d9Seric DOFORK(fork); 5179c9e68d9Seric return (pid); 5189c9e68d9Seric } 5199c9e68d9Seric /* 52013bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 52113bbc08cSeric ** 52213bbc08cSeric ** This routine delivers to everyone on the same host as the 52313bbc08cSeric ** user on the head of the list. It is clever about mailers 52413bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 52513bbc08cSeric ** that it will deliver to all these addresses however -- so 52613bbc08cSeric ** deliver should be called once for each address on the 52713bbc08cSeric ** list. 52825a99e2eSeric ** 52925a99e2eSeric ** Parameters: 530588cad61Seric ** e -- the envelope to deliver. 531c77d1c25Seric ** firstto -- head of the address list to deliver to. 53225a99e2eSeric ** 53325a99e2eSeric ** Returns: 53425a99e2eSeric ** zero -- successfully delivered. 53525a99e2eSeric ** else -- some failure, see ExitStat for more info. 53625a99e2eSeric ** 53725a99e2eSeric ** Side Effects: 53825a99e2eSeric ** The standard input is passed off to someone. 53925a99e2eSeric */ 54025a99e2eSeric 541588cad61Seric deliver(e, firstto) 542588cad61Seric register ENVELOPE *e; 543c77d1c25Seric ADDRESS *firstto; 54425a99e2eSeric { 54578442df3Seric char *host; /* host being sent to */ 54678442df3Seric char *user; /* user being sent to */ 54725a99e2eSeric char **pvp; 5485dfc646bSeric register char **mvp; 54925a99e2eSeric register char *p; 550588cad61Seric register MAILER *m; /* mailer for this recipient */ 5516259796dSeric ADDRESS *ctladdr; 552b31e7f2bSeric register MCI *mci; 553c77d1c25Seric register ADDRESS *to = firstto; 554c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 555772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 556911693bfSbostic int rcode; /* response code */ 557e103b48fSeric char *firstsig; /* signature of firstto */ 5589c9e68d9Seric int pid; 5599c9e68d9Seric char *curhost; 5609c9e68d9Seric int mpvect[2]; 5619c9e68d9Seric int rpvect[2]; 562ee6bf8dfSeric char *pv[MAXPV+1]; 563579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 564ee6bf8dfSeric char buf[MAXNAME]; 565c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 566fabb3bd4Seric extern int checkcompat(); 567ee6bf8dfSeric extern ADDRESS *getctladdr(); 568ee6bf8dfSeric extern char *remotename(); 569e103b48fSeric extern char *hostsignature(); 5709c9e68d9Seric extern FILE *fdopen(); 57125a99e2eSeric 57235490626Seric errno = 0; 573ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5745dfc646bSeric return (0); 57525a99e2eSeric 576134746fbSeric #ifdef NAMED_BIND 577912a731aSbostic /* unless interactive, try twice, over a minute */ 578912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 579912a731aSbostic _res.retrans = 30; 580912a731aSbostic _res.retry = 2; 581912a731aSbostic } 582d4bd8f0eSbostic #endif 583912a731aSbostic 58451552439Seric m = to->q_mailer; 58551552439Seric host = to->q_host; 586c9be6216Seric CurEnv = e; /* just in case */ 5874384d521Seric e->e_statmsg = NULL; 58851552439Seric 5896ef48975Seric if (tTd(10, 1)) 5905dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 59151552439Seric m->m_mno, host, to->q_user); 592f3dbc832Seric 593f3dbc832Seric /* 594f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 595f3dbc832Seric ** connections now, just mark these addresses and return. 596f3dbc832Seric ** This is useful if we want to batch connections to 597f3dbc832Seric ** reduce load. This will cause the messages to be 598f3dbc832Seric ** queued up, and a daemon will come along to send the 599f3dbc832Seric ** messages later. 600f3dbc832Seric ** This should be on a per-mailer basis. 601f3dbc832Seric */ 602f3dbc832Seric 60319c47125Seric if (NoConnect && !bitset(EF_QUEUERUN, e->e_flags) && 60419c47125Seric bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 605f3dbc832Seric { 606f3dbc832Seric for (; to != NULL; to = to->q_next) 607f4560e80Seric { 608ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 609c6e18ac5Seric to->q_mailer != m) 610f4560e80Seric continue; 611f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 612588cad61Seric e->e_to = to->q_paddr; 61308b25121Seric message("queued"); 6142f624c86Seric if (LogLevel > 8) 61581161401Seric logdelivery(m, NULL, "queued", e); 616f4560e80Seric } 617588cad61Seric e->e_to = NULL; 618f3dbc832Seric return (0); 619f3dbc832Seric } 620f3dbc832Seric 62125a99e2eSeric /* 6225dfc646bSeric ** Do initial argv setup. 6235dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6245dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6255dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6265dfc646bSeric ** code does not check for 'pv' overflow; this places a 6275dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6283bea8136Seric ** The from address rewrite is expected to make 6293bea8136Seric ** the address relative to the other end. 6305dfc646bSeric */ 6315dfc646bSeric 63278442df3Seric /* rewrite from address, using rewriting rules */ 633efe54562Seric rcode = EX_OK; 634efe54562Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, 635efe54562Seric RF_SENDERADDR|RF_CANONICAL, 636efe54562Seric &rcode, e)); 637ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 638588cad61Seric define('h', host, e); /* to host */ 6395dfc646bSeric Errors = 0; 6405dfc646bSeric pvp = pv; 6415dfc646bSeric *pvp++ = m->m_argv[0]; 6425dfc646bSeric 6435dfc646bSeric /* insert -f or -r flag as appropriate */ 64457fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6455dfc646bSeric { 64657fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6475dfc646bSeric *pvp++ = "-f"; 6485dfc646bSeric else 6495dfc646bSeric *pvp++ = "-r"; 650c23ed322Seric *pvp++ = newstr(rpathbuf); 6515dfc646bSeric } 6525dfc646bSeric 6535dfc646bSeric /* 6545dfc646bSeric ** Append the other fixed parts of the argv. These run 6555dfc646bSeric ** up to the first entry containing "$u". There can only 6565dfc646bSeric ** be one of these, and there are only a few more slots 6575dfc646bSeric ** in the pv after it. 6585dfc646bSeric */ 6595dfc646bSeric 6605dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6615dfc646bSeric { 6622bc47524Seric /* can't use strchr here because of sign extension problems */ 6632bc47524Seric while (*p != '\0') 6642bc47524Seric { 6652bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6662bc47524Seric { 6672bc47524Seric if (*p == 'u') 6685dfc646bSeric break; 6692bc47524Seric } 6702bc47524Seric } 6712bc47524Seric 6722bc47524Seric if (*p != '\0') 6735dfc646bSeric break; 6745dfc646bSeric 6755dfc646bSeric /* this entry is safe -- go ahead and process it */ 676588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6775dfc646bSeric *pvp++ = newstr(buf); 6785dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6795dfc646bSeric { 68008b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6815dfc646bSeric return (-1); 6825dfc646bSeric } 6835dfc646bSeric } 684c579ef51Seric 68533db8731Seric /* 68633db8731Seric ** If we have no substitution for the user name in the argument 68733db8731Seric ** list, we know that we must supply the names otherwise -- and 68833db8731Seric ** SMTP is the answer!! 68933db8731Seric */ 69033db8731Seric 6915dfc646bSeric if (*mvp == NULL) 692c579ef51Seric { 693c579ef51Seric /* running SMTP */ 6942c7e1b8dSeric # ifdef SMTP 695c579ef51Seric clever = TRUE; 696c579ef51Seric *pvp = NULL; 6976c2c3107Seric # else /* SMTP */ 69833db8731Seric /* oops! we don't implement SMTP */ 69908b25121Seric syserr("554 SMTP style mailer"); 7002c7e1b8dSeric return (EX_SOFTWARE); 7016c2c3107Seric # endif /* SMTP */ 702c579ef51Seric } 7035dfc646bSeric 7045dfc646bSeric /* 7055dfc646bSeric ** At this point *mvp points to the argument with $u. We 7065dfc646bSeric ** run through our address list and append all the addresses 7075dfc646bSeric ** we can. If we run out of space, do not fret! We can 7085dfc646bSeric ** always send another copy later. 7095dfc646bSeric */ 7105dfc646bSeric 7115dfc646bSeric tobuf[0] = '\0'; 712588cad61Seric e->e_to = tobuf; 7136259796dSeric ctladdr = NULL; 714e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7155dfc646bSeric for (; to != NULL; to = to->q_next) 7165dfc646bSeric { 7175dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 71857fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7195dfc646bSeric break; 7205dfc646bSeric 7215dfc646bSeric /* if already sent or not for this host, don't send */ 722ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 723e103b48fSeric to->q_mailer != firstto->q_mailer || 724e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7255dfc646bSeric continue; 7266259796dSeric 7274b22ea87Seric /* avoid overflowing tobuf */ 728aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7294b22ea87Seric break; 7304b22ea87Seric 7316ef48975Seric if (tTd(10, 1)) 732772e6e50Seric { 733772e6e50Seric printf("\nsend to "); 734772e6e50Seric printaddr(to, FALSE); 735772e6e50Seric } 736772e6e50Seric 7376259796dSeric /* compute effective uid/gid when sending */ 7387da1035fSeric if (to->q_mailer == ProgMailer) 7396259796dSeric ctladdr = getctladdr(to); 7406259796dSeric 7415dfc646bSeric user = to->q_user; 742588cad61Seric e->e_to = to->q_paddr; 74375f1ade9Seric if (tTd(10, 5)) 74475f1ade9Seric { 74575f1ade9Seric printf("deliver: QDONTSEND "); 74675f1ade9Seric printaddr(to, FALSE); 74775f1ade9Seric } 748ee4b0922Seric to->q_flags |= QDONTSEND; 7495dfc646bSeric 7505dfc646bSeric /* 7515dfc646bSeric ** Check to see that these people are allowed to 7525dfc646bSeric ** talk to each other. 7532a6e0786Seric */ 7542a6e0786Seric 75569582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 75669582d2fSeric { 75769582d2fSeric NoReturn = TRUE; 75808b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 75981161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 76069582d2fSeric continue; 76169582d2fSeric } 762fabb3bd4Seric rcode = checkcompat(to, e); 7631793c9c5Seric if (rcode != EX_OK) 7645dfc646bSeric { 76581161401Seric giveresponse(rcode, m, NULL, e); 7665dfc646bSeric continue; 7675dfc646bSeric } 7682a6e0786Seric 7692a6e0786Seric /* 7709ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7719ec9501bSeric ** about them. 77225a99e2eSeric */ 77325a99e2eSeric 77457fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 77525a99e2eSeric { 7761d8f1806Seric stripquotes(user); 7771d8f1806Seric stripquotes(host); 77825a99e2eSeric } 77925a99e2eSeric 780cdb828c5Seric /* hack attack -- delivermail compatibility */ 781cdb828c5Seric if (m == ProgMailer && *user == '|') 782cdb828c5Seric user++; 783cdb828c5Seric 78425a99e2eSeric /* 7853efaed6eSeric ** If an error message has already been given, don't 7863efaed6eSeric ** bother to send to this address. 7873efaed6eSeric ** 7883efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7893efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 7903efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 7913efaed6eSeric */ 7923efaed6eSeric 7936cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 7943efaed6eSeric continue; 7953efaed6eSeric 796f2fec898Seric /* save statistics.... */ 797588cad61Seric markstats(e, to); 798f2fec898Seric 7993efaed6eSeric /* 80025a99e2eSeric ** See if this user name is "special". 80125a99e2eSeric ** If the user name has a slash in it, assume that this 80251552439Seric ** is a file -- send it off without further ado. Note 80351552439Seric ** that this type of addresses is not processed along 80451552439Seric ** with the others, so we fudge on the To person. 80525a99e2eSeric */ 80625a99e2eSeric 8072c017f8dSeric if (m == FileMailer) 80825a99e2eSeric { 809b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 81081161401Seric giveresponse(rcode, m, NULL, e); 811dde5acadSeric if (rcode == EX_OK) 812dde5acadSeric to->q_flags |= QSENT; 8135dfc646bSeric continue; 81425a99e2eSeric } 81525a99e2eSeric 81613bbc08cSeric /* 81713bbc08cSeric ** Address is verified -- add this user to mailer 81813bbc08cSeric ** argv, and add it to the print list of recipients. 81913bbc08cSeric */ 82013bbc08cSeric 821508daeccSeric /* link together the chain of recipients */ 822508daeccSeric to->q_tchain = tochain; 823508daeccSeric tochain = to; 824508daeccSeric 8255dfc646bSeric /* create list of users for error messages */ 826db8841e9Seric (void) strcat(tobuf, ","); 827db8841e9Seric (void) strcat(tobuf, to->q_paddr); 828588cad61Seric define('u', user, e); /* to user */ 829588cad61Seric define('z', to->q_home, e); /* user's home */ 8305dfc646bSeric 831c579ef51Seric /* 832508daeccSeric ** Expand out this user into argument list. 833c579ef51Seric */ 834c579ef51Seric 835508daeccSeric if (!clever) 836c579ef51Seric { 837588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8385dfc646bSeric *pvp++ = newstr(buf); 8395dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8405dfc646bSeric { 8415dfc646bSeric /* allow some space for trailing parms */ 8425dfc646bSeric break; 8435dfc646bSeric } 8445dfc646bSeric } 845c579ef51Seric } 8465dfc646bSeric 847145b49b1Seric /* see if any addresses still exist */ 848145b49b1Seric if (tobuf[0] == '\0') 849c579ef51Seric { 850588cad61Seric define('g', (char *) NULL, e); 851145b49b1Seric return (0); 852c579ef51Seric } 853145b49b1Seric 8545dfc646bSeric /* print out messages as full list */ 85563780dbdSeric e->e_to = tobuf + 1; 8565dfc646bSeric 8575dfc646bSeric /* 8585dfc646bSeric ** Fill out any parameters after the $u parameter. 8595dfc646bSeric */ 8605dfc646bSeric 861c579ef51Seric while (!clever && *++mvp != NULL) 8625dfc646bSeric { 863588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8645dfc646bSeric *pvp++ = newstr(buf); 8655dfc646bSeric if (pvp >= &pv[MAXPV]) 86608b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8675dfc646bSeric } 8685dfc646bSeric *pvp++ = NULL; 8695dfc646bSeric 87025a99e2eSeric /* 87125a99e2eSeric ** Call the mailer. 8726328bdf7Seric ** The argument vector gets built, pipes 87325a99e2eSeric ** are created as necessary, and we fork & exec as 8746328bdf7Seric ** appropriate. 875c579ef51Seric ** If we are running SMTP, we just need to clean up. 87625a99e2eSeric */ 87725a99e2eSeric 8787ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 87986b26461Seric ctladdr = &e->e_from; 880134746fbSeric #ifdef NAMED_BIND 8812bcc6d2dSeric if (ConfigLevel < 2) 882912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 883134746fbSeric #endif 8849c9e68d9Seric 8859c9e68d9Seric if (tTd(11, 1)) 886134746fbSeric { 8879c9e68d9Seric printf("openmailer:"); 8889c9e68d9Seric printav(pv); 8899c9e68d9Seric } 8909c9e68d9Seric errno = 0; 8919c9e68d9Seric 8929c9e68d9Seric CurHostName = m->m_mailer; 8939c9e68d9Seric 8949c9e68d9Seric /* 8959c9e68d9Seric ** Deal with the special case of mail handled through an IPC 8969c9e68d9Seric ** connection. 8979c9e68d9Seric ** In this case we don't actually fork. We must be 8989c9e68d9Seric ** running SMTP for this to work. We will return a 8999c9e68d9Seric ** zero pid to indicate that we are running IPC. 9009c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 9019c9e68d9Seric */ 9029c9e68d9Seric 9039c9e68d9Seric curhost = NULL; 9049c9e68d9Seric 9059c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9069c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9079c9e68d9Seric { 9089c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9099c9e68d9Seric bzero((char *) mci, sizeof *mci); 9109c9e68d9Seric mci->mci_in = stdin; 9119c9e68d9Seric mci->mci_out = stdout; 9129c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9139c9e68d9Seric mci->mci_mailer = m; 9149c9e68d9Seric } 9159c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9169c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9179c9e68d9Seric { 9189c9e68d9Seric #ifdef DAEMON 9199c9e68d9Seric register int i; 9209c9e68d9Seric register u_short port; 9219c9e68d9Seric extern MCI *mci_get(); 9229c9e68d9Seric extern char *hostsignature(); 9239c9e68d9Seric 9249c9e68d9Seric CurHostName = pv[1]; 9259c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9269c9e68d9Seric 9279c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9289c9e68d9Seric { 9299c9e68d9Seric syserr("null signature"); 930845e533cSeric rcode = EX_OSERR; 931b31e7f2bSeric goto give_up; 932b31e7f2bSeric } 9339c9e68d9Seric 9349c9e68d9Seric if (!clever) 9359c9e68d9Seric { 9369c9e68d9Seric syserr("554 non-clever IPC"); 9379c9e68d9Seric rcode = EX_OSERR; 9389c9e68d9Seric goto give_up; 9399c9e68d9Seric } 9409c9e68d9Seric if (pv[2] != NULL) 9419c9e68d9Seric port = atoi(pv[2]); 9429c9e68d9Seric else 9439c9e68d9Seric port = 0; 9449c9e68d9Seric tryhost: 9459c9e68d9Seric mci = NULL; 9469c9e68d9Seric while (*curhost != '\0') 9479c9e68d9Seric { 9489c9e68d9Seric register char *p; 9499c9e68d9Seric static char hostbuf[MAXNAME]; 9509c9e68d9Seric 9519c9e68d9Seric mci = NULL; 9529c9e68d9Seric 9539c9e68d9Seric /* pull the next host from the signature */ 9549c9e68d9Seric p = strchr(curhost, ':'); 9559c9e68d9Seric if (p == NULL) 9569c9e68d9Seric p = &curhost[strlen(curhost)]; 9579c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9589c9e68d9Seric hostbuf[p - curhost] = '\0'; 9599c9e68d9Seric if (*p != '\0') 9609c9e68d9Seric p++; 9619c9e68d9Seric curhost = p; 9629c9e68d9Seric 9639c9e68d9Seric /* see if we already know that this host is fried */ 9649c9e68d9Seric CurHostName = hostbuf; 9659c9e68d9Seric mci = mci_get(hostbuf, m); 9669c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9679c9e68d9Seric { 9689c9e68d9Seric if (tTd(11, 1)) 9699c9e68d9Seric { 9709c9e68d9Seric printf("openmailer: "); 9719c9e68d9Seric mci_dump(mci); 9729c9e68d9Seric } 9739c9e68d9Seric CurHostName = mci->mci_host; 9749c9e68d9Seric break; 9759c9e68d9Seric } 9769c9e68d9Seric mci->mci_mailer = m; 9779c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9789c9e68d9Seric continue; 9799c9e68d9Seric 9809c9e68d9Seric /* try the connection */ 9819c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9829c9e68d9Seric message("Connecting to %s (%s)...", 9839c9e68d9Seric hostbuf, m->m_name); 9849c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9859c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9869c9e68d9Seric mci->mci_exitstat = i; 9879c9e68d9Seric mci->mci_errno = errno; 9889c9e68d9Seric if (i == EX_OK) 9899c9e68d9Seric { 9909c9e68d9Seric mci->mci_state = MCIS_OPENING; 9919c9e68d9Seric mci_cache(mci); 9929c9e68d9Seric break; 9939c9e68d9Seric } 9949c9e68d9Seric else if (tTd(11, 1)) 9959c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 9969c9e68d9Seric i, errno); 9979c9e68d9Seric 9989c9e68d9Seric 9999c9e68d9Seric /* enter status of this host */ 10009c9e68d9Seric setstat(i); 10019c9e68d9Seric } 10029c9e68d9Seric mci->mci_pid = 0; 10039c9e68d9Seric #else /* no DAEMON */ 10049c9e68d9Seric syserr("554 openmailer: no IPC"); 10059c9e68d9Seric if (tTd(11, 1)) 10069c9e68d9Seric printf("openmailer: NULL\n"); 10079c9e68d9Seric return NULL; 10089c9e68d9Seric #endif /* DAEMON */ 10099c9e68d9Seric } 10109c9e68d9Seric else 10119c9e68d9Seric { 10126fe8c3bcSeric int i; 10136fe8c3bcSeric struct stat stbuf; 10146fe8c3bcSeric 10156fe8c3bcSeric /* make absolutely certain 0, 1, and 2 are in use */ 10166fe8c3bcSeric for (i = 0; i < 3; i++) 10176fe8c3bcSeric { 10186fe8c3bcSeric if (fstat(i, &stbuf) < 0) 10196fe8c3bcSeric { 10206fe8c3bcSeric /* oops.... */ 10210e3bfef5Seric int fd; 10220e3bfef5Seric 10230e3bfef5Seric syserr("%s... openmailer(%s): fd %d not open", 10240e3bfef5Seric e->e_to, m->m_name, i); 10250e3bfef5Seric fd = open("/dev/null", O_RDONLY, 0666); 10260e3bfef5Seric if (fd != i) 10270e3bfef5Seric { 10280e3bfef5Seric (void) dup2(fd, i); 10290e3bfef5Seric (void) close(fd); 10300e3bfef5Seric } 10316fe8c3bcSeric } 10326fe8c3bcSeric } 10336fe8c3bcSeric 10349c9e68d9Seric /* create a pipe to shove the mail through */ 10359c9e68d9Seric if (pipe(mpvect) < 0) 10369c9e68d9Seric { 10370e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10380e3bfef5Seric e->e_to, m->m_name); 10399c9e68d9Seric if (tTd(11, 1)) 10409c9e68d9Seric printf("openmailer: NULL\n"); 10419c9e68d9Seric rcode = EX_OSERR; 10429c9e68d9Seric goto give_up; 10439c9e68d9Seric } 10449c9e68d9Seric 10459c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10469c9e68d9Seric if (clever && pipe(rpvect) < 0) 10479c9e68d9Seric { 10480e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10490e3bfef5Seric e->e_to, m->m_name); 10509c9e68d9Seric (void) close(mpvect[0]); 10519c9e68d9Seric (void) close(mpvect[1]); 10529c9e68d9Seric if (tTd(11, 1)) 10539c9e68d9Seric printf("openmailer: NULL\n"); 10549c9e68d9Seric rcode = EX_OSERR; 10559c9e68d9Seric goto give_up; 10569c9e68d9Seric } 10579c9e68d9Seric 10589c9e68d9Seric /* 10599c9e68d9Seric ** Actually fork the mailer process. 10609c9e68d9Seric ** DOFORK is clever about retrying. 10619c9e68d9Seric ** 10629c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10639c9e68d9Seric ** around so that endmail will get it. 10649c9e68d9Seric */ 10659c9e68d9Seric 10669c9e68d9Seric if (e->e_xfp != NULL) 10679c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10689c9e68d9Seric (void) fflush(stdout); 10699c9e68d9Seric # ifdef SIGCHLD 10709c9e68d9Seric (void) signal(SIGCHLD, SIG_DFL); 10719c9e68d9Seric # endif /* SIGCHLD */ 10729c9e68d9Seric DOFORK(FORK); 10739c9e68d9Seric /* pid is set by DOFORK */ 10749c9e68d9Seric if (pid < 0) 10759c9e68d9Seric { 10769c9e68d9Seric /* failure */ 10770e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10780e3bfef5Seric e->e_to, m->m_name); 10799c9e68d9Seric (void) close(mpvect[0]); 10809c9e68d9Seric (void) close(mpvect[1]); 10819c9e68d9Seric if (clever) 10829c9e68d9Seric { 10839c9e68d9Seric (void) close(rpvect[0]); 10849c9e68d9Seric (void) close(rpvect[1]); 10859c9e68d9Seric } 10869c9e68d9Seric if (tTd(11, 1)) 10879c9e68d9Seric printf("openmailer: NULL\n"); 10889c9e68d9Seric rcode = EX_OSERR; 10899c9e68d9Seric goto give_up; 10909c9e68d9Seric } 10919c9e68d9Seric else if (pid == 0) 10929c9e68d9Seric { 10939c9e68d9Seric int i; 10949c9e68d9Seric int saveerrno; 10959c9e68d9Seric char **ep; 10969c9e68d9Seric char *env[MAXUSERENVIRON]; 10979c9e68d9Seric extern char **environ; 10989c9e68d9Seric extern int DtableSize; 10999c9e68d9Seric 11009c9e68d9Seric /* child -- set up input & exec mailer */ 11019c9e68d9Seric /* make diagnostic output be standard output */ 11029c9e68d9Seric (void) signal(SIGINT, SIG_IGN); 11039c9e68d9Seric (void) signal(SIGHUP, SIG_IGN); 11049c9e68d9Seric (void) signal(SIGTERM, SIG_DFL); 11059c9e68d9Seric 11069c9e68d9Seric /* close any other cached connections */ 11079c9e68d9Seric mci_flush(FALSE, mci); 11089c9e68d9Seric 1109b986f6aaSeric /* move into some "safe" directory */ 1110b986f6aaSeric if (m->m_execdir != NULL) 1111b986f6aaSeric { 1112b986f6aaSeric char *p, *q; 1113b986f6aaSeric char buf[MAXLINE]; 1114b986f6aaSeric 1115b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1116b986f6aaSeric { 1117b986f6aaSeric q = strchr(p, ':'); 1118b986f6aaSeric if (q != NULL) 1119b986f6aaSeric *q = '\0'; 1120b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1121b986f6aaSeric if (q != NULL) 1122b986f6aaSeric *q++ = ':'; 1123b986f6aaSeric if (tTd(11, 20)) 1124b986f6aaSeric printf("openmailer: trydir %s\n", 1125b986f6aaSeric buf); 1126b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1127b986f6aaSeric break; 1128b986f6aaSeric } 1129b986f6aaSeric } 1130b986f6aaSeric 11319c9e68d9Seric /* arrange to filter std & diag output of command */ 11329c9e68d9Seric if (clever) 11339c9e68d9Seric { 11349c9e68d9Seric (void) close(rpvect[0]); 11356fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11366fe8c3bcSeric { 11370e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11380e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11396fe8c3bcSeric _exit(EX_OSERR); 11406fe8c3bcSeric } 11419c9e68d9Seric (void) close(rpvect[1]); 11429c9e68d9Seric } 11439c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11449c9e68d9Seric { 11459c9e68d9Seric /* put mailer output in transcript */ 11466fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11476fe8c3bcSeric { 11480e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11490e3bfef5Seric e->e_to, m->m_name, 11506fe8c3bcSeric fileno(e->e_xfp)); 11516fe8c3bcSeric _exit(EX_OSERR); 11529c9e68d9Seric } 11536fe8c3bcSeric } 11546fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11556fe8c3bcSeric { 11560e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11570e3bfef5Seric e->e_to, m->m_name); 11586fe8c3bcSeric _exit(EX_OSERR); 11596fe8c3bcSeric } 11609c9e68d9Seric 11619c9e68d9Seric /* arrange to get standard input */ 11629c9e68d9Seric (void) close(mpvect[1]); 11639c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11649c9e68d9Seric { 11650e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 11660e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 11679c9e68d9Seric _exit(EX_OSERR); 11689c9e68d9Seric } 11699c9e68d9Seric (void) close(mpvect[0]); 11709c9e68d9Seric if (!bitnset(M_RESTR, m->m_flags)) 11719c9e68d9Seric { 11729c9e68d9Seric if (ctladdr == NULL || ctladdr->q_uid == 0) 11739c9e68d9Seric { 11749c9e68d9Seric (void) setgid(DefGid); 11759c9e68d9Seric (void) initgroups(DefUser, DefGid); 11769c9e68d9Seric (void) setuid(DefUid); 11779c9e68d9Seric } 11789c9e68d9Seric else 11799c9e68d9Seric { 11809c9e68d9Seric (void) setgid(ctladdr->q_gid); 11819c9e68d9Seric (void) initgroups(ctladdr->q_ruser? 11829c9e68d9Seric ctladdr->q_ruser: ctladdr->q_user, 11839c9e68d9Seric ctladdr->q_gid); 11849c9e68d9Seric (void) setuid(ctladdr->q_uid); 11859c9e68d9Seric } 11869c9e68d9Seric } 11879c9e68d9Seric 11889c9e68d9Seric /* arrange for all the files to be closed */ 11899c9e68d9Seric for (i = 3; i < DtableSize; i++) 11909c9e68d9Seric { 11919c9e68d9Seric register int j; 11929c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 11939c9e68d9Seric (void)fcntl(i, F_SETFD, j|1); 11949c9e68d9Seric } 11959c9e68d9Seric 11969c9e68d9Seric /* set up the mailer environment */ 11979c9e68d9Seric i = 0; 11989c9e68d9Seric env[i++] = "AGENT=sendmail"; 11999c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 12009c9e68d9Seric { 12019c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12029c9e68d9Seric env[i++] = *ep; 12039c9e68d9Seric } 12049c9e68d9Seric env[i++] = NULL; 12059c9e68d9Seric 12069c9e68d9Seric /* try to execute the mailer */ 12079c9e68d9Seric execve(m->m_mailer, pv, env); 12089c9e68d9Seric saveerrno = errno; 12099c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12109c9e68d9Seric if (m == LocalMailer) 12119c9e68d9Seric _exit(EX_TEMPFAIL); 12129c9e68d9Seric if (transienterror(saveerrno)) 12139c9e68d9Seric _exit(EX_TEMPFAIL); 12149c9e68d9Seric _exit(EX_UNAVAILABLE); 12159c9e68d9Seric } 12169c9e68d9Seric 12179c9e68d9Seric /* 12189c9e68d9Seric ** Set up return value. 12199c9e68d9Seric */ 12209c9e68d9Seric 12219c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12229c9e68d9Seric bzero((char *) mci, sizeof *mci); 12239c9e68d9Seric mci->mci_mailer = m; 12249c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12259c9e68d9Seric mci->mci_pid = pid; 12269c9e68d9Seric (void) close(mpvect[0]); 12279c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12289c9e68d9Seric if (clever) 12299c9e68d9Seric { 12309c9e68d9Seric (void) close(rpvect[1]); 12319c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12329c9e68d9Seric } 12339c9e68d9Seric else 12349c9e68d9Seric { 12359c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12369c9e68d9Seric mci->mci_in = NULL; 12379c9e68d9Seric } 12389c9e68d9Seric } 12399c9e68d9Seric 12409c9e68d9Seric /* 12419c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12429c9e68d9Seric */ 12439c9e68d9Seric 12449c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12459c9e68d9Seric { 12469c9e68d9Seric smtpinit(m, mci, e); 12479c9e68d9Seric } 12489c9e68d9Seric if (tTd(11, 1)) 12499c9e68d9Seric { 12509c9e68d9Seric printf("openmailer: "); 12519c9e68d9Seric mci_dump(mci); 12529c9e68d9Seric } 12539c9e68d9Seric 12549c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1255b31e7f2bSeric { 1256b31e7f2bSeric /* couldn't open the mailer */ 1257b31e7f2bSeric rcode = mci->mci_exitstat; 12582a6bc25bSeric errno = mci->mci_errno; 1259b31e7f2bSeric if (rcode == EX_OK) 1260b31e7f2bSeric { 1261b31e7f2bSeric /* shouldn't happen */ 126208b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12636b0f339dSeric rcode, mci->mci_state, firstsig); 1264b31e7f2bSeric rcode = EX_SOFTWARE; 1265b31e7f2bSeric } 1266b31e7f2bSeric } 1267b31e7f2bSeric else if (!clever) 1268b31e7f2bSeric { 1269b31e7f2bSeric /* 1270b31e7f2bSeric ** Format and send message. 1271b31e7f2bSeric */ 127215d084d5Seric 1273b31e7f2bSeric putfromline(mci->mci_out, m, e); 1274b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1275b31e7f2bSeric putline("\n", mci->mci_out, m); 1276b31e7f2bSeric (*e->e_putbody)(mci->mci_out, m, e); 1277b31e7f2bSeric 1278b31e7f2bSeric /* get the exit status */ 1279c9be6216Seric rcode = endmailer(mci, e, pv); 1280134746fbSeric } 1281134746fbSeric else 1282b31e7f2bSeric #ifdef SMTP 1283134746fbSeric { 1284b31e7f2bSeric /* 1285b31e7f2bSeric ** Send the MAIL FROM: protocol 1286b31e7f2bSeric */ 128715d084d5Seric 1288b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1289b31e7f2bSeric if (rcode == EX_OK) 129075889e88Seric { 1291ded0d3daSkarels register char *t = tobuf; 1292ded0d3daSkarels register int i; 1293ded0d3daSkarels 1294588cad61Seric /* send the recipient list */ 129563780dbdSeric tobuf[0] = '\0'; 129675889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 129775889e88Seric { 129863780dbdSeric e->e_to = to->q_paddr; 129915d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 130075889e88Seric { 130183b7ddc9Seric markfailure(e, to, i); 130281161401Seric giveresponse(i, m, mci, e); 130363780dbdSeric } 130475889e88Seric else 130575889e88Seric { 1306911693bfSbostic *t++ = ','; 1307b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1308b31e7f2bSeric continue; 1309588cad61Seric } 1310588cad61Seric } 1311588cad61Seric 131263780dbdSeric /* now send the data */ 131363780dbdSeric if (tobuf[0] == '\0') 1314b31e7f2bSeric { 13159c9e68d9Seric rcode = EX_OK; 131663780dbdSeric e->e_to = NULL; 1317b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1318b31e7f2bSeric smtprset(m, mci, e); 1319b31e7f2bSeric } 132075889e88Seric else 132175889e88Seric { 132263780dbdSeric e->e_to = tobuf + 1; 132375889e88Seric rcode = smtpdata(m, mci, e); 132463780dbdSeric } 132563780dbdSeric 132663780dbdSeric /* now close the connection */ 1327b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 132815d084d5Seric smtpquit(m, mci, e); 132963780dbdSeric } 13309c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13319c9e68d9Seric { 13329c9e68d9Seric /* try next MX site */ 13339c9e68d9Seric goto tryhost; 13349c9e68d9Seric } 1335c579ef51Seric } 1336b31e7f2bSeric #else /* not SMTP */ 1337a05b3449Sbostic { 133808b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1339845e533cSeric rcode = EX_CONFIG; 1340b31e7f2bSeric goto give_up; 1341a05b3449Sbostic } 1342b31e7f2bSeric #endif /* SMTP */ 1343134746fbSeric #ifdef NAMED_BIND 13442bcc6d2dSeric if (ConfigLevel < 2) 1345912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1346134746fbSeric #endif 13475dfc646bSeric 1348b31e7f2bSeric /* arrange a return receipt if requested */ 13498c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1350b31e7f2bSeric { 1351b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1352b31e7f2bSeric /* do we want to send back more info? */ 1353b31e7f2bSeric } 1354b31e7f2bSeric 1355c77d1c25Seric /* 135663780dbdSeric ** Do final status disposal. 135763780dbdSeric ** We check for something in tobuf for the SMTP case. 1358c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1359c77d1c25Seric ** addressees. 1360c77d1c25Seric */ 1361c77d1c25Seric 1362b31e7f2bSeric give_up: 136363780dbdSeric if (tobuf[0] != '\0') 136481161401Seric giveresponse(rcode, m, mci, e); 1365772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1366b31e7f2bSeric { 1367dde5acadSeric if (rcode != EX_OK) 136883b7ddc9Seric markfailure(e, to, rcode); 1369dde5acadSeric else 1370655518ecSeric { 1371dde5acadSeric to->q_flags |= QSENT; 1372655518ecSeric e->e_nsent++; 1373655518ecSeric } 1374b31e7f2bSeric } 1375b31e7f2bSeric 1376b31e7f2bSeric /* 1377b31e7f2bSeric ** Restore state and return. 1378b31e7f2bSeric */ 1379c77d1c25Seric 138035490626Seric errno = 0; 1381588cad61Seric define('g', (char *) NULL, e); 13825826d9d3Seric return (rcode); 138325a99e2eSeric } 13845dfc646bSeric /* 138583b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 138683b7ddc9Seric ** 138783b7ddc9Seric ** Parameters: 138883b7ddc9Seric ** e -- the envelope we are sending. 138983b7ddc9Seric ** q -- the address to mark. 139083b7ddc9Seric ** rcode -- the code signifying the particular failure. 139183b7ddc9Seric ** 139283b7ddc9Seric ** Returns: 139383b7ddc9Seric ** none. 139483b7ddc9Seric ** 139583b7ddc9Seric ** Side Effects: 139683b7ddc9Seric ** marks the address (and possibly the envelope) with the 139783b7ddc9Seric ** failure so that an error will be returned or 139883b7ddc9Seric ** the message will be queued, as appropriate. 139983b7ddc9Seric */ 140083b7ddc9Seric 140183b7ddc9Seric markfailure(e, q, rcode) 140283b7ddc9Seric register ENVELOPE *e; 140383b7ddc9Seric register ADDRESS *q; 140483b7ddc9Seric int rcode; 140583b7ddc9Seric { 140619c47125Seric char buf[MAXLINE]; 140719c47125Seric extern char *pintvl(); 140819c47125Seric 140983b7ddc9Seric if (rcode == EX_OK) 141083b7ddc9Seric return; 1411ef137175Sbostic else if (rcode != EX_TEMPFAIL && rcode != EX_IOERR && rcode != EX_OSERR) 141283b7ddc9Seric q->q_flags |= QBADADDR; 141319c47125Seric else if (curtime() > e->e_ctime + TimeOuts.to_q_return) 141483b7ddc9Seric { 141583b7ddc9Seric if (!bitset(EF_TIMEOUT, e->e_flags)) 1416198d9be0Seric { 1417198d9be0Seric (void) sprintf(buf, "Cannot send message for %s", 141819c47125Seric pintvl(TimeOuts.to_q_return, FALSE)); 1419198d9be0Seric if (e->e_message != NULL) 1420198d9be0Seric free(e->e_message); 1421198d9be0Seric e->e_message = newstr(buf); 142208b25121Seric message(buf); 1423198d9be0Seric } 142483b7ddc9Seric q->q_flags |= QBADADDR; 142583b7ddc9Seric e->e_flags |= EF_TIMEOUT; 1426c13b5dfcSeric fprintf(e->e_xfp, "421 %s... Message timed out\n", q->q_paddr); 142783b7ddc9Seric } 142883b7ddc9Seric else 142919c47125Seric { 143083b7ddc9Seric q->q_flags |= QQUEUEUP; 143119c47125Seric if (TimeOuts.to_q_warning > 0 && 143219c47125Seric curtime() > e->e_ctime + TimeOuts.to_q_warning) 143319c47125Seric { 143419c47125Seric if (!bitset(EF_WARNING, e->e_flags) && 143519c47125Seric e->e_class >= 0) 143619c47125Seric { 143719c47125Seric (void) sprintf(buf, 143819c47125Seric "warning: cannot send message for %s", 143919c47125Seric pintvl(TimeOuts.to_q_warning, FALSE)); 144019c47125Seric if (e->e_message != NULL) 144119c47125Seric free(e->e_message); 144219c47125Seric e->e_message = newstr(buf); 144319c47125Seric message(buf); 144419c47125Seric e->e_flags |= EF_WARNING|EF_TIMEOUT; 144519c47125Seric } 144619c47125Seric fprintf(e->e_xfp, 144719c47125Seric "%s... Warning: message still undelivered after %s\n", 144819c47125Seric q->q_paddr, pintvl(TimeOuts.to_q_warning, FALSE)); 144919c47125Seric fprintf(e->e_xfp, "Will keep trying until message is %s old\n", 145019c47125Seric pintvl(TimeOuts.to_q_return, FALSE)); 145119c47125Seric } 145219c47125Seric } 145383b7ddc9Seric } 145483b7ddc9Seric /* 1455c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1456c579ef51Seric ** 1457c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1458c579ef51Seric ** violation), so we report those specially. For other 1459c579ef51Seric ** errors, we choose a status message (into statmsg), 1460c579ef51Seric ** and if it represents an error, we print it. 1461c579ef51Seric ** 1462c579ef51Seric ** Parameters: 1463c579ef51Seric ** pid -- pid of mailer. 1464c9be6216Seric ** e -- the current envelope. 1465c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1466c9be6216Seric ** (for error messages). 1467c579ef51Seric ** 1468c579ef51Seric ** Returns: 1469c579ef51Seric ** exit code of mailer. 1470c579ef51Seric ** 1471c579ef51Seric ** Side Effects: 1472c579ef51Seric ** none. 1473c579ef51Seric */ 1474c579ef51Seric 1475c9be6216Seric endmailer(mci, e, pv) 1476b31e7f2bSeric register MCI *mci; 1477c9be6216Seric register ENVELOPE *e; 1478c9be6216Seric char **pv; 1479c579ef51Seric { 1480588cad61Seric int st; 1481c579ef51Seric 148275889e88Seric /* close any connections */ 148375889e88Seric if (mci->mci_in != NULL) 1484c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 148575889e88Seric if (mci->mci_out != NULL) 1486c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 148775889e88Seric mci->mci_in = mci->mci_out = NULL; 148875889e88Seric mci->mci_state = MCIS_CLOSED; 148975889e88Seric 149033db8731Seric /* in the IPC case there is nothing to wait for */ 149175889e88Seric if (mci->mci_pid == 0) 149233db8731Seric return (EX_OK); 149333db8731Seric 149433db8731Seric /* wait for the mailer process to die and collect status */ 149575889e88Seric st = waitfor(mci->mci_pid); 1496588cad61Seric if (st == -1) 149778de67c1Seric { 1498c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1499588cad61Seric return (EX_SOFTWARE); 1500c579ef51Seric } 150133db8731Seric 150233db8731Seric /* see if it died a horrid death */ 1503c579ef51Seric if ((st & 0377) != 0) 1504c579ef51Seric { 1505c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1506c9be6216Seric 1507c9be6216Seric /* log the arguments */ 1508c9be6216Seric if (e->e_xfp != NULL) 1509c9be6216Seric { 1510c9be6216Seric register char **av; 1511c9be6216Seric 1512c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1513c9be6216Seric for (av = pv; *av != NULL; av++) 1514c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1515c9be6216Seric fprintf(e->e_xfp, "\n"); 1516c9be6216Seric } 1517c9be6216Seric 15185f73204aSeric ExitStat = EX_TEMPFAIL; 15195f73204aSeric return (EX_TEMPFAIL); 1520c579ef51Seric } 152133db8731Seric 152233db8731Seric /* normal death -- return status */ 1523588cad61Seric st = (st >> 8) & 0377; 1524588cad61Seric return (st); 1525c579ef51Seric } 1526c579ef51Seric /* 152725a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 152825a99e2eSeric ** 152925a99e2eSeric ** Parameters: 153025a99e2eSeric ** stat -- the status code from the mailer (high byte 153125a99e2eSeric ** only; core dumps must have been taken care of 153225a99e2eSeric ** already). 153381161401Seric ** m -- the mailer info for this mailer. 153481161401Seric ** mci -- the mailer connection info -- can be NULL if the 153581161401Seric ** response is given before the connection is made. 153681161401Seric ** e -- the current envelope. 153725a99e2eSeric ** 153825a99e2eSeric ** Returns: 1539db8841e9Seric ** none. 154025a99e2eSeric ** 154125a99e2eSeric ** Side Effects: 1542c1f9df2cSeric ** Errors may be incremented. 154325a99e2eSeric ** ExitStat may be set. 154425a99e2eSeric */ 154525a99e2eSeric 154681161401Seric giveresponse(stat, m, mci, e) 154725a99e2eSeric int stat; 1548588cad61Seric register MAILER *m; 154981161401Seric register MCI *mci; 1550198d9be0Seric ENVELOPE *e; 155125a99e2eSeric { 155225a99e2eSeric register char *statmsg; 155325a99e2eSeric extern char *SysExMsg[]; 155425a99e2eSeric register int i; 1555d4bd8f0eSbostic extern int N_SysEx; 1556d4bd8f0eSbostic #ifdef NAMED_BIND 1557d4bd8f0eSbostic extern int h_errno; 1558d4bd8f0eSbostic #endif 1559198d9be0Seric char buf[MAXLINE]; 15607d55540cSeric extern char *errstring(); 156125a99e2eSeric 156213bbc08cSeric /* 156313bbc08cSeric ** Compute status message from code. 156413bbc08cSeric */ 156513bbc08cSeric 156625a99e2eSeric i = stat - EX__BASE; 1567588cad61Seric if (stat == 0) 15686fe8c3bcSeric { 1569588cad61Seric statmsg = "250 Sent"; 1570ce5531bdSeric if (e->e_statmsg != NULL) 15716fe8c3bcSeric { 1572ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15736fe8c3bcSeric statmsg = buf; 15746fe8c3bcSeric } 15756fe8c3bcSeric } 1576588cad61Seric else if (i < 0 || i > N_SysEx) 1577588cad61Seric { 1578588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1579588cad61Seric stat = EX_UNAVAILABLE; 1580588cad61Seric statmsg = buf; 1581588cad61Seric } 1582198d9be0Seric else if (stat == EX_TEMPFAIL) 1583198d9be0Seric { 15847d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1585d4bd8f0eSbostic #ifdef NAMED_BIND 1586f28da541Smiriam if (h_errno == TRY_AGAIN) 1587f28da541Smiriam statmsg = errstring(h_errno+MAX_ERRNO); 1588f28da541Smiriam else 1589d4bd8f0eSbostic #endif 1590f28da541Smiriam { 15918557d168Seric if (errno != 0) 1592d87e85f3Seric statmsg = errstring(errno); 1593d87e85f3Seric else 1594d87e85f3Seric { 1595d87e85f3Seric #ifdef SMTP 1596d87e85f3Seric extern char SmtpError[]; 1597d87e85f3Seric 1598d87e85f3Seric statmsg = SmtpError; 15996c2c3107Seric #else /* SMTP */ 1600d87e85f3Seric statmsg = NULL; 16016c2c3107Seric #endif /* SMTP */ 1602d87e85f3Seric } 1603f28da541Smiriam } 1604d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1605d87e85f3Seric { 160687c9b3e7Seric (void) strcat(buf, ": "); 1607d87e85f3Seric (void) strcat(buf, statmsg); 16088557d168Seric } 1609198d9be0Seric statmsg = buf; 1610198d9be0Seric } 161125a99e2eSeric else 1612d87e85f3Seric { 161325a99e2eSeric statmsg = SysExMsg[i]; 16147d55540cSeric if (*statmsg++ == ':') 16157d55540cSeric { 16167d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 16177d55540cSeric statmsg = buf; 16187d55540cSeric } 1619d87e85f3Seric } 1620588cad61Seric 1621588cad61Seric /* 1622588cad61Seric ** Print the message as appropriate 1623588cad61Seric */ 1624588cad61Seric 1625198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1626e12d03eeSeric message(&statmsg[4], errstring(errno)); 162725a99e2eSeric else 162825a99e2eSeric { 1629c1f9df2cSeric Errors++; 1630e12d03eeSeric usrerr(statmsg, errstring(errno)); 163125a99e2eSeric } 163225a99e2eSeric 163325a99e2eSeric /* 163425a99e2eSeric ** Final cleanup. 163525a99e2eSeric ** Log a record of the transaction. Compute the new 163625a99e2eSeric ** ExitStat -- if we already had an error, stick with 163725a99e2eSeric ** that. 163825a99e2eSeric */ 163925a99e2eSeric 16402f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 164181161401Seric logdelivery(m, mci, &statmsg[4], e); 1642eb238f8cSeric 1643eb238f8cSeric if (stat != EX_TEMPFAIL) 1644eb238f8cSeric setstat(stat); 1645198d9be0Seric if (stat != EX_OK) 1646198d9be0Seric { 1647198d9be0Seric if (e->e_message != NULL) 1648198d9be0Seric free(e->e_message); 1649198d9be0Seric e->e_message = newstr(&statmsg[4]); 1650198d9be0Seric } 16518557d168Seric errno = 0; 1652d4bd8f0eSbostic #ifdef NAMED_BIND 1653f28da541Smiriam h_errno = 0; 1654d4bd8f0eSbostic #endif 1655eb238f8cSeric } 1656eb238f8cSeric /* 1657eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1658eb238f8cSeric ** 1659eb238f8cSeric ** Parameters: 166081161401Seric ** m -- the mailer info. Can be NULL for initial queue. 166181161401Seric ** mci -- the mailer connection info -- can be NULL if the 166281161401Seric ** log is occuring when no connection is active. 166381161401Seric ** stat -- the message to print for the status. 166481161401Seric ** e -- the current envelope. 1665eb238f8cSeric ** 1666eb238f8cSeric ** Returns: 1667eb238f8cSeric ** none 1668eb238f8cSeric ** 1669eb238f8cSeric ** Side Effects: 1670eb238f8cSeric ** none 1671eb238f8cSeric */ 1672eb238f8cSeric 167381161401Seric logdelivery(m, mci, stat, e) 167481161401Seric MAILER *m; 167581161401Seric register MCI *mci; 1676eb238f8cSeric char *stat; 1677b31e7f2bSeric register ENVELOPE *e; 16785cf56be3Seric { 1679eb238f8cSeric # ifdef LOG 16809507d1f9Seric char *curhost; 1681d6acf3eeSeric char buf[512]; 16829507d1f9Seric extern char *pintvl(); 16839507d1f9Seric extern char *macvalue(); 16849507d1f9Seric 168548ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 168681161401Seric 168748ed5d33Seric if (m != NULL) 168871ff6caaSeric { 168948ed5d33Seric (void) strcat(buf, ", mailer="); 169048ed5d33Seric (void) strcat(buf, m->m_name); 169171ff6caaSeric } 169248ed5d33Seric 169348ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 169471ff6caaSeric { 169571ff6caaSeric # ifdef DAEMON 1696e2f2f828Seric extern SOCKADDR CurHostAddr; 1697e2f2f828Seric extern char *anynet_ntoa(); 169848ed5d33Seric # endif 169971ff6caaSeric 170048ed5d33Seric (void) strcat(buf, ", relay="); 170148ed5d33Seric (void) strcat(buf, mci->mci_host); 170248ed5d33Seric 170348ed5d33Seric # ifdef DAEMON 170448ed5d33Seric (void) strcat(buf, " ("); 1705e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 170648ed5d33Seric (void) strcat(buf, ")"); 170771ff6caaSeric # endif 170871ff6caaSeric } 17099507d1f9Seric else 171048ed5d33Seric { 171148ed5d33Seric char *p = macvalue('h', e); 17129507d1f9Seric 171348ed5d33Seric if (p != NULL && p[0] != '\0') 171448ed5d33Seric { 171548ed5d33Seric (void) strcat(buf, ", relay="); 171648ed5d33Seric (void) strcat(buf, p); 171748ed5d33Seric } 171848ed5d33Seric } 1719d6acf3eeSeric 1720d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1721d6acf3eeSeric e->e_id, e->e_to, buf, stat); 17226c2c3107Seric # endif /* LOG */ 172325a99e2eSeric } 172425a99e2eSeric /* 172551552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 172625a99e2eSeric ** 172751552439Seric ** This can be made an arbitrary message separator by changing $l 172851552439Seric ** 17299b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17309b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17319b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17329b6c17a6Seric ** this kind of antique garbage???? 173325a99e2eSeric ** 173425a99e2eSeric ** Parameters: 173551552439Seric ** fp -- the file to output to. 173651552439Seric ** m -- the mailer describing this entry. 173725a99e2eSeric ** 173825a99e2eSeric ** Returns: 173951552439Seric ** none 174025a99e2eSeric ** 174125a99e2eSeric ** Side Effects: 174251552439Seric ** outputs some text to fp. 174325a99e2eSeric */ 174425a99e2eSeric 1745b31e7f2bSeric putfromline(fp, m, e) 174651552439Seric register FILE *fp; 174751552439Seric register MAILER *m; 1748b31e7f2bSeric ENVELOPE *e; 174925a99e2eSeric { 17502bc47524Seric char *template = "\201l\n"; 175151552439Seric char buf[MAXLINE]; 175225a99e2eSeric 175357fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 175451552439Seric return; 175513bbc08cSeric 17562c7e1b8dSeric # ifdef UGLYUUCP 175757fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 175874b6e67bSeric { 1759ea09d6edSeric char *bang; 1760ea09d6edSeric char xbuf[MAXLINE]; 176174b6e67bSeric 1762ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17636c2c3107Seric bang = strchr(buf, '!'); 176474b6e67bSeric if (bang == NULL) 176508b25121Seric syserr("554 No ! in UUCP! (%s)", buf); 176674b6e67bSeric else 1767588cad61Seric { 1768ea09d6edSeric *bang++ = '\0'; 17692bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1770ea09d6edSeric template = xbuf; 177174b6e67bSeric } 1772588cad61Seric } 17736c2c3107Seric # endif /* UGLYUUCP */ 1774b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 177577b52738Seric putline(buf, fp, m); 1776bc6e2962Seric } 1777bc6e2962Seric /* 177851552439Seric ** PUTBODY -- put the body of a message. 177951552439Seric ** 178051552439Seric ** Parameters: 178151552439Seric ** fp -- file to output onto. 178277b52738Seric ** m -- a mailer descriptor to control output format. 17839a6a5f55Seric ** e -- the envelope to put out. 178451552439Seric ** 178551552439Seric ** Returns: 178651552439Seric ** none. 178751552439Seric ** 178851552439Seric ** Side Effects: 178951552439Seric ** The message is written onto fp. 179051552439Seric */ 179151552439Seric 179277b52738Seric putbody(fp, m, e) 179351552439Seric FILE *fp; 1794588cad61Seric MAILER *m; 17959a6a5f55Seric register ENVELOPE *e; 179651552439Seric { 179777b52738Seric char buf[MAXLINE]; 179851552439Seric 179951552439Seric /* 180051552439Seric ** Output the body of the message 180151552439Seric */ 180251552439Seric 18039a6a5f55Seric if (e->e_dfp == NULL) 180451552439Seric { 18059a6a5f55Seric if (e->e_df != NULL) 18069a6a5f55Seric { 18079a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 18089a6a5f55Seric if (e->e_dfp == NULL) 18098f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 18108f9146b0Srick e->e_df, e->e_to, e->e_from); 18119a6a5f55Seric } 18129a6a5f55Seric else 181377b52738Seric putline("<<< No Message Collected >>>", fp, m); 18149a6a5f55Seric } 18159a6a5f55Seric if (e->e_dfp != NULL) 18169a6a5f55Seric { 18179a6a5f55Seric rewind(e->e_dfp); 181877b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 181924fc8aeeSeric { 182024fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1821d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18223462ad9eSeric (void) putc('>', fp); 182377b52738Seric putline(buf, fp, m); 182424fc8aeeSeric } 182551552439Seric 18269a6a5f55Seric if (ferror(e->e_dfp)) 182751552439Seric { 182851552439Seric syserr("putbody: read error"); 182951552439Seric ExitStat = EX_IOERR; 183051552439Seric } 183151552439Seric } 183251552439Seric 183351552439Seric (void) fflush(fp); 183451552439Seric if (ferror(fp) && errno != EPIPE) 183551552439Seric { 183651552439Seric syserr("putbody: write error"); 183751552439Seric ExitStat = EX_IOERR; 183851552439Seric } 183951552439Seric errno = 0; 184025a99e2eSeric } 184125a99e2eSeric /* 184225a99e2eSeric ** MAILFILE -- Send a message to a file. 184325a99e2eSeric ** 1844f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1845f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1846f129ec7dSeric ** rather than the real user. Obviously, this only works if 1847f129ec7dSeric ** sendmail runs as root. 1848f129ec7dSeric ** 1849588cad61Seric ** This could be done as a subordinate mailer, except that it 1850588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1851588cad61Seric ** view this as being sufficiently important as to include it 1852588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1853588cad61Seric ** to create another process plus some pipes to save the message. 1854588cad61Seric ** 185525a99e2eSeric ** Parameters: 185625a99e2eSeric ** filename -- the name of the file to send to. 18576259796dSeric ** ctladdr -- the controlling address header -- includes 18586259796dSeric ** the userid/groupid to be when sending. 185925a99e2eSeric ** 186025a99e2eSeric ** Returns: 186125a99e2eSeric ** The exit code associated with the operation. 186225a99e2eSeric ** 186325a99e2eSeric ** Side Effects: 186425a99e2eSeric ** none. 186525a99e2eSeric */ 186625a99e2eSeric 1867b31e7f2bSeric mailfile(filename, ctladdr, e) 186825a99e2eSeric char *filename; 18696259796dSeric ADDRESS *ctladdr; 1870b31e7f2bSeric register ENVELOPE *e; 187125a99e2eSeric { 187225a99e2eSeric register FILE *f; 187332d19d43Seric register int pid; 187415d084d5Seric int mode; 187525a99e2eSeric 1876671745f3Seric if (tTd(11, 1)) 1877671745f3Seric { 1878671745f3Seric printf("mailfile %s\n ctladdr=", filename); 1879671745f3Seric printaddr(ctladdr, FALSE); 1880671745f3Seric } 1881671745f3Seric 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) 1903e6e1265fSeric stb.st_mode = 0666; 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; 195527628d59Seric f = dfopen(filename, "a"); 195625a99e2eSeric if (f == NULL) 195795f16dc0Seric { 195808b25121Seric message("554 cannot open"); 195932d19d43Seric exit(EX_CANTCREAT); 196095f16dc0Seric } 196125a99e2eSeric 1962b31e7f2bSeric putfromline(f, ProgMailer, e); 1963b843d759Seric (*e->e_puthdr)(f, ProgMailer, e); 196477b52738Seric putline("\n", f, ProgMailer); 1965b843d759Seric (*e->e_putbody)(f, ProgMailer, e); 196677b52738Seric putline("\n", f, ProgMailer); 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 2074*7bf809e6Seric nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 20757d55540cSeric 2076e103b48fSeric if (nmx <= 0) 2077e103b48fSeric { 2078e103b48fSeric register MCI *mci; 2079e103b48fSeric extern int errno; 2080e103b48fSeric extern MCI *mci_get(); 2081e103b48fSeric 2082e103b48fSeric /* update the connection info for this host */ 2083bafdc4e5Seric mci = mci_get(hp, m); 2084e103b48fSeric mci->mci_exitstat = rcode; 2085e103b48fSeric mci->mci_errno = errno; 2086e103b48fSeric 2087e103b48fSeric /* and return the original host name as the signature */ 2088bafdc4e5Seric nmx = 1; 2089bafdc4e5Seric mxhosts[0] = hp; 2090e103b48fSeric } 2091e103b48fSeric 2092e103b48fSeric len = 0; 2093e103b48fSeric for (i = 0; i < nmx; i++) 2094e103b48fSeric { 2095e103b48fSeric len += strlen(mxhosts[i]) + 1; 2096e103b48fSeric } 2097bafdc4e5Seric if (s->s_hostsig != NULL) 2098bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2099bafdc4e5Seric p = xalloc(len); 2100bafdc4e5Seric if (s->s_hostsig != NULL) 2101bafdc4e5Seric { 2102bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2103bafdc4e5Seric free(s->s_hostsig); 2104bafdc4e5Seric s->s_hostsig = p; 2105bafdc4e5Seric p += strlen(p); 2106bafdc4e5Seric *p++ = ':'; 2107bafdc4e5Seric } 2108bafdc4e5Seric else 2109bafdc4e5Seric s->s_hostsig = p; 2110e103b48fSeric for (i = 0; i < nmx; i++) 2111e103b48fSeric { 2112e103b48fSeric if (i != 0) 2113e103b48fSeric *p++ = ':'; 2114e103b48fSeric strcpy(p, mxhosts[i]); 2115e103b48fSeric p += strlen(p); 2116e103b48fSeric } 2117bafdc4e5Seric if (endp != NULL) 2118bafdc4e5Seric *endp++ = ':'; 2119bafdc4e5Seric } 2120e103b48fSeric makelower(s->s_hostsig); 2121516782b4Seric if (ConfigLevel < 2) 2122516782b4Seric _res.options = oldoptions; 2123e103b48fSeric #else 2124e103b48fSeric /* not using BIND -- the signature is just the host name */ 2125e103b48fSeric s->s_hostsig = host; 2126e103b48fSeric #endif 2127e103b48fSeric if (tTd(17, 1)) 2128e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2129e103b48fSeric return s->s_hostsig; 2130e103b48fSeric } 2131