1939f5b94Sdist /* 20942ea6aSbostic * Copyright (c) 1983 Eric P. Allman 3da1c6175Sbostic * Copyright (c) 1988 Regents of the University of California. 4da1c6175Sbostic * All rights reserved. 5da1c6175Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 7939f5b94Sdist */ 8939f5b94Sdist 97aa493c5Seric #include <errno.h> 10a8c080f0Seric #include <signal.h> 116c05f684Sbostic #include "sendmail.h" 127fa39d90Seric 13af5e902cSeric #ifndef lint 14da1c6175Sbostic #ifdef DAEMON 15*00b385a9Seric static char sccsid[] = "@(#)daemon.c 6.50 (Berkeley) 05/24/93 (with daemon mode)"; 16d0a9e852Seric #else 17*00b385a9Seric static char sccsid[] = "@(#)daemon.c 6.50 (Berkeley) 05/24/93 (without daemon mode)"; 18da1c6175Sbostic #endif 19da1c6175Sbostic #endif /* not lint */ 20da1c6175Sbostic 21da1c6175Sbostic #ifdef DAEMON 22d0a9e852Seric 231c71e510Seric # include <netdb.h> 241e1663f7Swnj # include <sys/wait.h> 25af5e902cSeric # include <sys/time.h> 26d0a9e852Seric 273490b9dfSeric #ifdef NAMED_BIND 283490b9dfSeric # include <arpa/nameser.h> 293490b9dfSeric # include <resolv.h> 303490b9dfSeric #endif 313490b9dfSeric 327fa39d90Seric /* 337fa39d90Seric ** DAEMON.C -- routines to use when running as a daemon. 3447b12ae1Seric ** 3547b12ae1Seric ** This entire file is highly dependent on the 4.2 BSD 3647b12ae1Seric ** interprocess communication primitives. No attempt has 3747b12ae1Seric ** been made to make this file portable to Version 7, 3847b12ae1Seric ** Version 6, MPX files, etc. If you should try such a 3947b12ae1Seric ** thing yourself, I recommend chucking the entire file 4047b12ae1Seric ** and starting from scratch. Basic semantics are: 4147b12ae1Seric ** 4247b12ae1Seric ** getrequests() 4347b12ae1Seric ** Opens a port and initiates a connection. 4447b12ae1Seric ** Returns in a child. Must set InChannel and 4547b12ae1Seric ** OutChannel appropriately. 46b7d7afcbSeric ** clrdaemon() 47b7d7afcbSeric ** Close any open files associated with getting 48b7d7afcbSeric ** the connection; this is used when running the queue, 49b7d7afcbSeric ** etc., to avoid having extra file descriptors during 50b7d7afcbSeric ** the queue run and to avoid confusing the network 51b7d7afcbSeric ** code (if it cares). 52914346b1Seric ** makeconnection(host, port, outfile, infile, usesecureport) 5347b12ae1Seric ** Make a connection to the named host on the given 5447b12ae1Seric ** port. Set *outfile and *infile to the files 5547b12ae1Seric ** appropriate for communication. Returns zero on 5647b12ae1Seric ** success, else an exit status describing the 5747b12ae1Seric ** error. 5808de856eSeric ** host_map_lookup(map, hbuf, avp, pstat) 5905b57da8Seric ** Convert the entry in hbuf into a canonical form. 607fa39d90Seric */ 61e2f2f828Seric 62e2f2f828Seric extern char *anynet_ntoa(); 637fa39d90Seric /* 647fa39d90Seric ** GETREQUESTS -- open mail IPC port and get requests. 657fa39d90Seric ** 667fa39d90Seric ** Parameters: 677fa39d90Seric ** none. 687fa39d90Seric ** 697fa39d90Seric ** Returns: 707fa39d90Seric ** none. 717fa39d90Seric ** 727fa39d90Seric ** Side Effects: 737fa39d90Seric ** Waits until some interesting activity occurs. When 747fa39d90Seric ** it does, a child is created to process it, and the 757fa39d90Seric ** parent waits for completion. Return from this 76147303b1Seric ** routine is always in the child. The file pointers 77147303b1Seric ** "InChannel" and "OutChannel" should be set to point 78147303b1Seric ** to the communication channel. 797fa39d90Seric */ 807fa39d90Seric 81b7d7afcbSeric int DaemonSocket = -1; /* fd describing socket */ 82bfb80540Seric SOCKADDR DaemonAddr; /* socket for incoming */ 83bfc1eaf8Seric int ListenQueueSize = 10; /* size of listen queue */ 841c71e510Seric 857fa39d90Seric getrequests() 867fa39d90Seric { 871c71e510Seric int t; 881c71e510Seric register struct servent *sp; 897868dfc2Seric int on = 1; 9015d084d5Seric bool refusingconnections = TRUE; 910aae1086Seric FILE *pidf; 929b100374Sbostic extern void reapchild(); 93eb889047Seric 94a8268164Seric /* 951c71e510Seric ** Set up the address for the mailer. 96eb889047Seric */ 97eb889047Seric 98bfb80540Seric if (DaemonAddr.sin.sin_family == 0) 99bfb80540Seric DaemonAddr.sin.sin_family = AF_INET; 100bfb80540Seric if (DaemonAddr.sin.sin_addr.s_addr == 0) 101bfb80540Seric DaemonAddr.sin.sin_addr.s_addr = INADDR_ANY; 102bfb80540Seric if (DaemonAddr.sin.sin_port == 0) 103bfb80540Seric { 1041c71e510Seric sp = getservbyname("smtp", "tcp"); 1051c71e510Seric if (sp == NULL) 106d0a9e852Seric { 107ad977999Seric syserr("554 service \"smtp\" unknown"); 108a1961f2aSeric goto severe; 1091c71e510Seric } 110bfb80540Seric DaemonAddr.sin.sin_port = sp->s_port; 111bfb80540Seric } 1121c71e510Seric 1131c71e510Seric /* 1141c71e510Seric ** Try to actually open the connection. 1151c71e510Seric */ 1161c71e510Seric 1171c71e510Seric if (tTd(15, 1)) 118bfb80540Seric printf("getrequests: port 0x%x\n", DaemonAddr.sin.sin_port); 1191c71e510Seric 1201c71e510Seric /* get a socket for the SMTP connection */ 12198e28903Seric DaemonSocket = socket(DaemonAddr.sa.sa_family, SOCK_STREAM, 0); 122b7d7afcbSeric if (DaemonSocket < 0) 1231c71e510Seric { 1241c71e510Seric /* probably another daemon already */ 1251c71e510Seric syserr("getrequests: can't create socket"); 1261c71e510Seric severe: 127b0ba8827Seric # ifdef LOG 128b0ba8827Seric if (LogLevel > 0) 1290c034190Seric syslog(LOG_ALERT, "problem creating SMTP socket"); 1306c2c3107Seric # endif /* LOG */ 13147b12ae1Seric finis(); 132d0a9e852Seric } 1331b6e4a15Seric 1341b6e4a15Seric /* turn on network debugging? */ 135a2ef5fa4Seric if (tTd(15, 101)) 13652308a50Seric (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof on); 1371b6e4a15Seric 1387868dfc2Seric (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof on); 1397868dfc2Seric (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_KEEPALIVE, (char *)&on, sizeof on); 1407868dfc2Seric 14198e28903Seric switch (DaemonAddr.sa.sa_family) 14298e28903Seric { 14398e28903Seric # ifdef NETINET 14498e28903Seric case AF_INET: 14598e28903Seric t = sizeof DaemonAddr.sin; 14698e28903Seric break; 14798e28903Seric # endif 14898e28903Seric 14998e28903Seric # ifdef NETISO 15098e28903Seric case AF_ISO: 15198e28903Seric t = sizeof DaemonAddr.siso; 15298e28903Seric break; 15398e28903Seric # endif 15498e28903Seric 15598e28903Seric default: 15698e28903Seric t = sizeof DaemonAddr; 15798e28903Seric break; 15898e28903Seric } 15998e28903Seric 16098e28903Seric if (bind(DaemonSocket, &DaemonAddr.sa, t) < 0) 1611c71e510Seric { 1621c71e510Seric syserr("getrequests: cannot bind"); 163b7d7afcbSeric (void) close(DaemonSocket); 1641c71e510Seric goto severe; 1651c71e510Seric } 1661c71e510Seric 1671cd247eeSeric (void) signal(SIGCHLD, reapchild); 16852308a50Seric 1690aae1086Seric /* write the pid to the log file for posterity */ 1700aae1086Seric pidf = fopen(PidFile, "w"); 1710aae1086Seric if (pidf != NULL) 1720aae1086Seric { 1730aae1086Seric fprintf(pidf, "%d\n", getpid()); 1740aae1086Seric fclose(pidf); 1750aae1086Seric } 1760aae1086Seric 1770aae1086Seric 1781c71e510Seric if (tTd(15, 1)) 179b7d7afcbSeric printf("getrequests: %d\n", DaemonSocket); 1801c71e510Seric 1811c71e510Seric for (;;) 1821c71e510Seric { 1833a099713Seric register int pid; 184a44d5a5eSeric auto int lotherend; 18515d084d5Seric extern bool refuseconnections(); 1863a099713Seric 1873a099713Seric /* see if we are rejecting connections */ 18815d084d5Seric CurrentLA = getla(); 18915d084d5Seric if (refuseconnections()) 1906775ec03Sbostic { 19115d084d5Seric if (!refusingconnections) 19215d084d5Seric { 19315d084d5Seric /* don't queue so peer will fail quickly */ 19415d084d5Seric (void) listen(DaemonSocket, 0); 19515d084d5Seric refusingconnections = TRUE; 19615d084d5Seric } 19771e5e267Seric setproctitle("rejecting connections: load average: %d", 19871e5e267Seric CurrentLA); 1993a099713Seric sleep(5); 20015d084d5Seric continue; 20115d084d5Seric } 20215d084d5Seric 20315d084d5Seric if (refusingconnections) 20415d084d5Seric { 20515d084d5Seric /* start listening again */ 206bfc1eaf8Seric if (listen(DaemonSocket, ListenQueueSize) < 0) 20715d084d5Seric { 20815d084d5Seric syserr("getrequests: cannot listen"); 20915d084d5Seric (void) close(DaemonSocket); 21015d084d5Seric goto severe; 21115d084d5Seric } 21215d084d5Seric setproctitle("accepting connections"); 21315d084d5Seric refusingconnections = FALSE; 2146775ec03Sbostic } 215a44d5a5eSeric 2161c71e510Seric /* wait for a connection */ 2171c71e510Seric do 2181c71e510Seric { 2191c71e510Seric errno = 0; 2209f9a15b6Skarels lotherend = sizeof RealHostAddr; 2219b100374Sbostic t = accept(DaemonSocket, 2229b100374Sbostic (struct sockaddr *)&RealHostAddr, &lotherend); 2231c71e510Seric } while (t < 0 && errno == EINTR); 2241c71e510Seric if (t < 0) 2251c71e510Seric { 2261c71e510Seric syserr("getrequests: accept"); 2271c71e510Seric sleep(5); 2281c71e510Seric continue; 2291c71e510Seric } 230d0a9e852Seric 231d0a9e852Seric /* 232d0a9e852Seric ** Create a subprocess to process the mail. 233d0a9e852Seric */ 234d0a9e852Seric 23561e4310fSeric if (tTd(15, 2)) 2361c71e510Seric printf("getrequests: forking (fd = %d)\n", t); 237eb889047Seric 238a8268164Seric pid = fork(); 239a8268164Seric if (pid < 0) 240a8268164Seric { 241a8268164Seric syserr("daemon: cannot fork"); 242a8268164Seric sleep(10); 2431c71e510Seric (void) close(t); 244a8268164Seric continue; 245a8268164Seric } 246a8268164Seric 247a8268164Seric if (pid == 0) 248a8268164Seric { 2499f8b0eadSeric extern char *hostnamebyanyaddr(); 250a44d5a5eSeric 251a8268164Seric /* 252a8268164Seric ** CHILD -- return to caller. 253a44d5a5eSeric ** Collect verified idea of sending host. 254a8268164Seric ** Verify calling user id if possible here. 255a8268164Seric */ 256a8268164Seric 2571cd247eeSeric (void) signal(SIGCHLD, SIG_DFL); 258e17a3a5aSeric OpMode = MD_SMTP; 259779ac194Seric 260a44d5a5eSeric /* determine host name */ 2619f8b0eadSeric RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr)); 26229dcf4baSeric 2632a6bc25bSeric #ifdef LOG 264845e533cSeric if (LogLevel > 10) 2652a6bc25bSeric { 2662a6bc25bSeric /* log connection information */ 2672a6bc25bSeric syslog(LOG_INFO, "connect from %s (%s)", 2689f8b0eadSeric RealHostName, anynet_ntoa(&RealHostAddr)); 2692a6bc25bSeric } 2702a6bc25bSeric #endif 2712a6bc25bSeric 272244b09d1Seric (void) close(DaemonSocket); 273244b09d1Seric InChannel = fdopen(t, "r"); 274244b09d1Seric OutChannel = fdopen(dup(t), "w"); 275244b09d1Seric 27629dcf4baSeric /* should we check for illegal connection here? XXX */ 277e17a3a5aSeric #ifdef XLA 278e17a3a5aSeric if (!xla_host_ok(RealHostName)) 279e17a3a5aSeric { 280244b09d1Seric message("421 Too many SMTP sessions for this host"); 281e17a3a5aSeric exit(0); 282e17a3a5aSeric } 283e17a3a5aSeric #endif 284a44d5a5eSeric 28561e4310fSeric if (tTd(15, 2)) 286d0a9e852Seric printf("getreq: returning\n"); 287a8268164Seric return; 288a8268164Seric } 289a8268164Seric 2903c154354Seric /* close the port so that others will hang (for a while) */ 2913c154354Seric (void) close(t); 2928e3e4b17Seric } 2933c154354Seric /*NOTREACHED*/ 2943c154354Seric } 2958e3e4b17Seric /* 296b7d7afcbSeric ** CLRDAEMON -- reset the daemon connection 297b7d7afcbSeric ** 298b7d7afcbSeric ** Parameters: 299b7d7afcbSeric ** none. 300b7d7afcbSeric ** 301b7d7afcbSeric ** Returns: 302b7d7afcbSeric ** none. 303b7d7afcbSeric ** 304b7d7afcbSeric ** Side Effects: 305b7d7afcbSeric ** releases any resources used by the passive daemon. 306b7d7afcbSeric */ 307b7d7afcbSeric 308b7d7afcbSeric clrdaemon() 309b7d7afcbSeric { 310b7d7afcbSeric if (DaemonSocket >= 0) 311b7d7afcbSeric (void) close(DaemonSocket); 312b7d7afcbSeric DaemonSocket = -1; 313b7d7afcbSeric } 314b7d7afcbSeric /* 315bfb80540Seric ** SETDAEMONOPTIONS -- set options for running the daemon 316bfb80540Seric ** 317bfb80540Seric ** Parameters: 318bfb80540Seric ** p -- the options line. 319bfb80540Seric ** 320bfb80540Seric ** Returns: 321bfb80540Seric ** none. 322bfb80540Seric */ 323bfb80540Seric 324bfb80540Seric setdaemonoptions(p) 325bfb80540Seric register char *p; 326bfb80540Seric { 327850144caSeric if (DaemonAddr.sa.sa_family == AF_UNSPEC) 328850144caSeric DaemonAddr.sa.sa_family = AF_INET; 329850144caSeric 330bfb80540Seric while (p != NULL) 331bfb80540Seric { 332bfb80540Seric register char *f; 333bfb80540Seric register char *v; 334bfb80540Seric 335bfb80540Seric while (isascii(*p) && isspace(*p)) 336bfb80540Seric p++; 337bfb80540Seric if (*p == '\0') 338bfb80540Seric break; 339bfb80540Seric f = p; 340bfb80540Seric p = strchr(p, ','); 341bfb80540Seric if (p != NULL) 342bfb80540Seric *p++ = '\0'; 343bfb80540Seric v = strchr(f, '='); 344bfb80540Seric if (v == NULL) 345bfb80540Seric continue; 346bfb80540Seric while (isascii(*++v) && isspace(*v)) 347bfb80540Seric continue; 348bfb80540Seric 349bfb80540Seric switch (*f) 350bfb80540Seric { 351850144caSeric case 'F': /* address family */ 352850144caSeric if (isascii(*v) && isdigit(*v)) 353850144caSeric DaemonAddr.sa.sa_family = atoi(v); 354850144caSeric #ifdef NETINET 355850144caSeric else if (strcasecmp(v, "inet") == 0) 356850144caSeric DaemonAddr.sa.sa_family = AF_INET; 357850144caSeric #endif 358850144caSeric #ifdef NETISO 359850144caSeric else if (strcasecmp(v, "iso") == 0) 360850144caSeric DaemonAddr.sa.sa_family = AF_ISO; 361850144caSeric #endif 362850144caSeric #ifdef NETNS 363850144caSeric else if (strcasecmp(v, "ns") == 0) 364850144caSeric DaemonAddr.sa.sa_family = AF_NS; 365850144caSeric #endif 366850144caSeric #ifdef NETX25 367850144caSeric else if (strcasecmp(v, "x.25") == 0) 368850144caSeric DaemonAddr.sa.sa_family = AF_CCITT; 369850144caSeric #endif 370850144caSeric else 371850144caSeric syserr("554 Unknown address family %s in Family=option", v); 372850144caSeric break; 373850144caSeric 374850144caSeric case 'A': /* address */ 375850144caSeric switch (DaemonAddr.sa.sa_family) 376850144caSeric { 377850144caSeric #ifdef NETINET 378850144caSeric case AF_INET: 379850144caSeric if (isascii(*v) && isdigit(*v)) 380850144caSeric DaemonAddr.sin.sin_addr.s_addr = inet_network(v); 381850144caSeric else 382850144caSeric { 383850144caSeric register struct netent *np; 384850144caSeric 385850144caSeric np = getnetbyname(v); 386850144caSeric if (np == NULL) 387850144caSeric syserr("554 network \"%s\" unknown", v); 388850144caSeric else 389850144caSeric DaemonAddr.sin.sin_addr.s_addr = np->n_net; 390850144caSeric } 391850144caSeric break; 392850144caSeric #endif 393850144caSeric 394850144caSeric default: 395850144caSeric syserr("554 Address= option unsupported for family %d", 396850144caSeric DaemonAddr.sa.sa_family); 397850144caSeric break; 398850144caSeric } 399850144caSeric break; 400850144caSeric 401bfb80540Seric case 'P': /* port */ 402850144caSeric switch (DaemonAddr.sa.sa_family) 403850144caSeric { 404850144caSeric short port; 405850144caSeric 406850144caSeric #ifdef NETINET 407850144caSeric case AF_INET: 408bfb80540Seric if (isascii(*v) && isdigit(*v)) 409bfb80540Seric DaemonAddr.sin.sin_port = atoi(v); 410bfb80540Seric else 411bfb80540Seric { 412bfb80540Seric register struct servent *sp; 413bfb80540Seric 414bfb80540Seric sp = getservbyname(v, "tcp"); 415bfb80540Seric if (sp == NULL) 416ad977999Seric syserr("554 service \"%s\" unknown", v); 417bfb80540Seric else 418bfb80540Seric DaemonAddr.sin.sin_port = sp->s_port; 419bfb80540Seric } 420bfb80540Seric break; 421850144caSeric #endif 422bfb80540Seric 423850144caSeric #ifdef NETISO 424850144caSeric case AF_ISO: 425850144caSeric /* assume two byte transport selector */ 426bfb80540Seric if (isascii(*v) && isdigit(*v)) 427850144caSeric port = atoi(v); 428bfb80540Seric else 429bfb80540Seric { 430850144caSeric register struct servent *sp; 431bfb80540Seric 432850144caSeric sp = getservbyname(v, "tcp"); 433850144caSeric if (sp == NULL) 434ad977999Seric syserr("554 service \"%s\" unknown", v); 435bfb80540Seric else 436850144caSeric port = sp->s_port; 437850144caSeric } 438850144caSeric bcopy((char *) &port, TSEL(&DaemonAddr.siso), 2); 439850144caSeric break; 440850144caSeric #endif 441850144caSeric 442850144caSeric default: 443850144caSeric syserr("554 Port= option unsupported for family %d", 444850144caSeric DaemonAddr.sa.sa_family); 445850144caSeric break; 446bfb80540Seric } 447bfb80540Seric break; 448bfc1eaf8Seric 449bfc1eaf8Seric case 'L': /* listen queue size */ 450bfc1eaf8Seric ListenQueueSize = atoi(v); 451bfc1eaf8Seric break; 452bfb80540Seric } 453bfb80540Seric } 454bfb80540Seric } 455bfb80540Seric /* 4567aa493c5Seric ** MAKECONNECTION -- make a connection to an SMTP socket on another machine. 4577aa493c5Seric ** 4587aa493c5Seric ** Parameters: 4597aa493c5Seric ** host -- the name of the host. 46048ff0a9dSeric ** port -- the port number to connect to. 461655feedbSeric ** mci -- a pointer to the mail connection information 462655feedbSeric ** structure to be filled in. 463914346b1Seric ** usesecureport -- if set, use a low numbered (reserved) 464914346b1Seric ** port to provide some rudimentary authentication. 4657aa493c5Seric ** 4667aa493c5Seric ** Returns: 4677aa493c5Seric ** An exit code telling whether the connection could be 4687aa493c5Seric ** made and if not why not. 4697aa493c5Seric ** 4707aa493c5Seric ** Side Effects: 4717aa493c5Seric ** none. 4727aa493c5Seric */ 4737aa493c5Seric 474e2f2f828Seric SOCKADDR CurHostAddr; /* address of current host */ 47571ff6caaSeric 476b31e7f2bSeric int 477655feedbSeric makeconnection(host, port, mci, usesecureport) 4787aa493c5Seric char *host; 479210215eaSeric u_short port; 480b31e7f2bSeric register MCI *mci; 481914346b1Seric bool usesecureport; 4827aa493c5Seric { 48304344589Sbloom register int i, s; 48404344589Sbloom register struct hostent *hp = (struct hostent *)NULL; 485e2f2f828Seric SOCKADDR addr; 4866286bb75Sbloom int sav_errno; 487e2f2f828Seric int addrlen; 488134746fbSeric #ifdef NAMED_BIND 489134746fbSeric extern int h_errno; 490134746fbSeric #endif 4917aa493c5Seric 4927aa493c5Seric /* 4937aa493c5Seric ** Set up the address for the mailer. 49471096d12Seric ** Accept "[a.b.c.d]" syntax for host name. 4957aa493c5Seric */ 4967aa493c5Seric 497134746fbSeric #ifdef NAMED_BIND 498794bdbb9Smiriam h_errno = 0; 499134746fbSeric #endif 500794bdbb9Smiriam errno = 0; 501967778e2Seric bzero(&CurHostAddr, sizeof CurHostAddr); 502d945ebe8Seric CurHostName = host; 503794bdbb9Smiriam 50471096d12Seric if (host[0] == '[') 50571096d12Seric { 506a44d5a5eSeric long hid; 5076c2c3107Seric register char *p = strchr(host, ']'); 50871096d12Seric 509a44d5a5eSeric if (p != NULL) 51071096d12Seric { 511a44d5a5eSeric *p = '\0'; 5124d9c42c2Seric #ifdef NETINET 513a44d5a5eSeric hid = inet_addr(&host[1]); 514a7e21fe6Seric if (hid == -1) 5154d9c42c2Seric #endif 516a7e21fe6Seric { 517a7e21fe6Seric /* try it as a host name (avoid MX lookup) */ 518a7e21fe6Seric hp = gethostbyname(&host[1]); 519a7e21fe6Seric *p = ']'; 520a7e21fe6Seric goto gothostent; 521a7e21fe6Seric } 522a44d5a5eSeric *p = ']'; 52371096d12Seric } 524a7e21fe6Seric if (p == NULL) 52571096d12Seric { 52608b25121Seric usrerr("553 Invalid numeric domain spec \"%s\"", host); 52771096d12Seric return (EX_NOHOST); 52871096d12Seric } 5294d9c42c2Seric #ifdef NETINET 5304d9c42c2Seric addr.sin.sin_family = AF_INET; /*XXX*/ 53183c1f4bcSeric addr.sin.sin_addr.s_addr = hid; 5324d9c42c2Seric #endif 53371096d12Seric } 5341c71e510Seric else 5351c71e510Seric { 53604344589Sbloom hp = gethostbyname(host); 537a7e21fe6Seric gothostent: 538794bdbb9Smiriam if (hp == NULL) 539794bdbb9Smiriam { 540134746fbSeric #ifdef NAMED_BIND 541794bdbb9Smiriam if (errno == ETIMEDOUT || h_errno == TRY_AGAIN) 54252308a50Seric return (EX_TEMPFAIL); 54382e5d8ddSeric 544134746fbSeric /* if name server is specified, assume temp fail */ 545134746fbSeric if (errno == ECONNREFUSED && UseNameServer) 546134746fbSeric return (EX_TEMPFAIL); 547134746fbSeric #endif 5487aa493c5Seric return (EX_NOHOST); 549794bdbb9Smiriam } 55083c1f4bcSeric addr.sa.sa_family = hp->h_addrtype; 55183c1f4bcSeric switch (hp->h_addrtype) 55283c1f4bcSeric { 55383c1f4bcSeric #ifdef NETINET 55483c1f4bcSeric case AF_INET: 555e2f2f828Seric bcopy(hp->h_addr, 55683c1f4bcSeric &addr.sin.sin_addr, 557e2f2f828Seric hp->h_length); 55883c1f4bcSeric break; 55983c1f4bcSeric #endif 56083c1f4bcSeric 56183c1f4bcSeric default: 562e2f2f828Seric bcopy(hp->h_addr, 56383c1f4bcSeric addr.sa.sa_data, 564e2f2f828Seric hp->h_length); 56583c1f4bcSeric break; 56683c1f4bcSeric } 56704344589Sbloom i = 1; 5681c71e510Seric } 5691c71e510Seric 5701c71e510Seric /* 5711c71e510Seric ** Determine the port number. 5721c71e510Seric */ 5731c71e510Seric 574fd7c0790Seric if (port != 0) 575e2f2f828Seric port = htons(port); 576fd7c0790Seric else 5771c71e510Seric { 5781c71e510Seric register struct servent *sp = getservbyname("smtp", "tcp"); 5791c71e510Seric 5801c71e510Seric if (sp == NULL) 5811c71e510Seric { 582ad977999Seric syserr("554 makeconnection: service \"smtp\" unknown"); 583845e533cSeric return (EX_OSERR); 5841c71e510Seric } 585e2f2f828Seric port = sp->s_port; 586e2f2f828Seric } 587e2f2f828Seric 58883c1f4bcSeric switch (addr.sa.sa_family) 589e2f2f828Seric { 5904d9c42c2Seric #ifdef NETINET 591e2f2f828Seric case AF_INET: 59283c1f4bcSeric addr.sin.sin_port = port; 593e2f2f828Seric addrlen = sizeof (struct sockaddr_in); 594e2f2f828Seric break; 5954d9c42c2Seric #endif 596e2f2f828Seric 597e2f2f828Seric #ifdef NETISO 598e2f2f828Seric case AF_ISO: 599e2f2f828Seric /* assume two byte transport selector */ 600e2f2f828Seric bcopy((char *) &port, TSEL((struct sockaddr_iso *) &addr), 2); 601e2f2f828Seric addrlen = sizeof (struct sockaddr_iso); 602e2f2f828Seric break; 603e2f2f828Seric #endif 604e2f2f828Seric 605e2f2f828Seric default: 60683c1f4bcSeric syserr("Can't connect to address family %d", addr.sa.sa_family); 607e2f2f828Seric return (EX_NOHOST); 6081c71e510Seric } 6097aa493c5Seric 6107aa493c5Seric /* 6117aa493c5Seric ** Try to actually open the connection. 6127aa493c5Seric */ 6137aa493c5Seric 614e17a3a5aSeric #ifdef XLA 615e17a3a5aSeric /* if too many connections, don't bother trying */ 616e17a3a5aSeric if (!xla_noqueue_ok(host)) 617e17a3a5aSeric return EX_TEMPFAIL; 618e17a3a5aSeric #endif 619e17a3a5aSeric 620aea02ca1Seric for (;;) 621aea02ca1Seric { 62261e4310fSeric if (tTd(16, 1)) 623e2f2f828Seric printf("makeconnection (%s [%s])\n", 624e2f2f828Seric host, anynet_ntoa(&addr)); 6257aa493c5Seric 626226e3022Seric /* save for logging */ 627226e3022Seric CurHostAddr = addr; 628226e3022Seric 629914346b1Seric if (usesecureport) 630914346b1Seric { 631914346b1Seric int rport = IPPORT_RESERVED - 1; 632914346b1Seric 633914346b1Seric s = rresvport(&rport); 634914346b1Seric } 635914346b1Seric else 636914346b1Seric { 637af5e902cSeric s = socket(AF_INET, SOCK_STREAM, 0); 638914346b1Seric } 6397aa493c5Seric if (s < 0) 6407aa493c5Seric { 6416286bb75Sbloom sav_errno = errno; 642914346b1Seric syserr("makeconnection: no socket"); 6437aa493c5Seric goto failure; 6447aa493c5Seric } 6457aa493c5Seric 64661e4310fSeric if (tTd(16, 1)) 647b31e7f2bSeric printf("makeconnection: fd=%d\n", s); 6481b6e4a15Seric 6491b6e4a15Seric /* turn on network debugging? */ 650a2ef5fa4Seric if (tTd(16, 101)) 65152308a50Seric { 65252308a50Seric int on = 1; 653aea02ca1Seric (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_DEBUG, 654aea02ca1Seric (char *)&on, sizeof on); 65552308a50Seric } 65687d6e633Srick if (CurEnv->e_xfp != NULL) 657877a6142Seric (void) fflush(CurEnv->e_xfp); /* for debugging */ 6584bd6a662Seric errno = 0; /* for debugging */ 659e2f2f828Seric if (connect(s, (struct sockaddr *) &addr, addrlen) >= 0) 660aea02ca1Seric break; 661aea02ca1Seric 662aea02ca1Seric /* couldn't connect.... figure out why */ 6636286bb75Sbloom sav_errno = errno; 6646286bb75Sbloom (void) close(s); 66504344589Sbloom if (hp && hp->h_addr_list[i]) 66604344589Sbloom { 667aea02ca1Seric if (tTd(16, 1)) 668e2f2f828Seric printf("Connect failed (%s); trying new address....\n", 669e2f2f828Seric errstring(sav_errno)); 67083c1f4bcSeric switch (addr.sa.sa_family) 67183c1f4bcSeric { 67283c1f4bcSeric #ifdef NETINET 67383c1f4bcSeric case AF_INET: 674e2f2f828Seric bcopy(hp->h_addr_list[i++], 67583c1f4bcSeric &addr.sin.sin_addr, 676e2f2f828Seric hp->h_length); 67783c1f4bcSeric break; 67883c1f4bcSeric #endif 67983c1f4bcSeric 68083c1f4bcSeric default: 681e2f2f828Seric bcopy(hp->h_addr_list[i++], 68283c1f4bcSeric addr.sa.sa_data, 683914346b1Seric hp->h_length); 68483c1f4bcSeric break; 68583c1f4bcSeric } 686aea02ca1Seric continue; 68704344589Sbloom } 68804344589Sbloom 6897aa493c5Seric /* failure, decide if temporary or not */ 6907aa493c5Seric failure: 691244b09d1Seric #ifdef XLA 692244b09d1Seric xla_host_end(host); 693244b09d1Seric #endif 694e2de2524Seric if (transienterror(sav_errno)) 695e2de2524Seric return EX_TEMPFAIL; 696e2de2524Seric else 69787d6e633Srick { 69808b25121Seric message("%s", errstring(sav_errno)); 6997aa493c5Seric return (EX_UNAVAILABLE); 7007aa493c5Seric } 7017aa493c5Seric } 7027aa493c5Seric 7037aa493c5Seric /* connection ok, put it into canonical form */ 704655feedbSeric mci->mci_out = fdopen(s, "w"); 705655feedbSeric mci->mci_in = fdopen(dup(s), "r"); 7067aa493c5Seric 707dca8e1f7Seric return (EX_OK); 7087aa493c5Seric } 709444eaf03Seric /* 710444eaf03Seric ** MYHOSTNAME -- return the name of this host. 711444eaf03Seric ** 712444eaf03Seric ** Parameters: 713444eaf03Seric ** hostbuf -- a place to return the name of this host. 714897f1869Seric ** size -- the size of hostbuf. 715444eaf03Seric ** 716444eaf03Seric ** Returns: 717444eaf03Seric ** A list of aliases for this host. 718444eaf03Seric ** 719444eaf03Seric ** Side Effects: 72038ad259dSeric ** Sets the MyIpAddrs buffer to a list of my IP addresses. 721444eaf03Seric */ 722444eaf03Seric 72338ad259dSeric struct in_addr MyIpAddrs[MAXIPADDR + 1]; 72438ad259dSeric 725444eaf03Seric char ** 726897f1869Seric myhostname(hostbuf, size) 727444eaf03Seric char hostbuf[]; 728897f1869Seric int size; 729444eaf03Seric { 73038ad259dSeric register struct hostent *hp; 731444eaf03Seric extern struct hostent *gethostbyname(); 732444eaf03Seric 733af5e902cSeric if (gethostname(hostbuf, size) < 0) 734af5e902cSeric { 735af5e902cSeric (void) strcpy(hostbuf, "localhost"); 736af5e902cSeric } 737a44d5a5eSeric hp = gethostbyname(hostbuf); 738a44d5a5eSeric if (hp != NULL) 7397364df9fSeric { 74038ad259dSeric (void) strncpy(hostbuf, hp->h_name, size - 1); 74138ad259dSeric hostbuf[size - 1] = '\0'; 74238ad259dSeric 74338ad259dSeric if (hp->h_addrtype == AF_INET && hp->h_length == 4) 74438ad259dSeric { 74538ad259dSeric register int i; 74638ad259dSeric 74738ad259dSeric for (i = 0; i < MAXIPADDR; i++) 74838ad259dSeric { 74938ad259dSeric if (hp->h_addr_list[i] == NULL) 75038ad259dSeric break; 75138ad259dSeric MyIpAddrs[i].s_addr = *(u_long *) hp->h_addr_list[i]; 75238ad259dSeric } 75338ad259dSeric MyIpAddrs[i].s_addr = 0; 75438ad259dSeric } 75538ad259dSeric 756a44d5a5eSeric return (hp->h_aliases); 7577364df9fSeric } 758444eaf03Seric else 759444eaf03Seric return (NULL); 760444eaf03Seric } 761cb452edcSeric /* 7629f8b0eadSeric ** GETAUTHINFO -- get the real host name asociated with a file descriptor 7639f8b0eadSeric ** 7649f8b0eadSeric ** Uses RFC1413 protocol to try to get info from the other end. 765320e0d1cSeric ** 766320e0d1cSeric ** Parameters: 767320e0d1cSeric ** fd -- the descriptor 768320e0d1cSeric ** 769320e0d1cSeric ** Returns: 7709f8b0eadSeric ** The user@host information associated with this descriptor. 771320e0d1cSeric ** 772320e0d1cSeric ** Side Effects: 7739f8b0eadSeric ** Sets RealHostName to the name of the host at the other end. 774320e0d1cSeric */ 775320e0d1cSeric 7769f8b0eadSeric #ifdef IDENTPROTO 7779f8b0eadSeric 7789f8b0eadSeric static jmp_buf CtxAuthTimeout; 7799f8b0eadSeric 7809f8b0eadSeric static 7819f8b0eadSeric authtimeout() 7829f8b0eadSeric { 7839f8b0eadSeric longjmp(CtxAuthTimeout, 1); 7849f8b0eadSeric } 7859f8b0eadSeric 7869f8b0eadSeric #endif 7879f8b0eadSeric 788320e0d1cSeric char * 7899f8b0eadSeric getauthinfo(fd) 790320e0d1cSeric int fd; 791320e0d1cSeric { 7929f8b0eadSeric SOCKADDR fa; 7939f8b0eadSeric int falen; 794a5546e24Seric register char *p; 7959f8b0eadSeric #ifdef IDENTPROTO 7969f8b0eadSeric SOCKADDR la; 7979f8b0eadSeric int lalen; 7989f8b0eadSeric register struct servent *sp; 7999f8b0eadSeric int s; 8009f8b0eadSeric int i; 8019f8b0eadSeric EVENT *ev; 8029f8b0eadSeric #endif 8039f8b0eadSeric static char hbuf[MAXNAME * 2 + 2]; 8049f8b0eadSeric extern char *hostnamebyanyaddr(); 8059f8b0eadSeric extern char RealUserName[]; /* main.c */ 806320e0d1cSeric 8079f8b0eadSeric falen = sizeof fa; 8089f8b0eadSeric if (getpeername(fd, &fa.sa, &falen) < 0 || falen <= 0) 8099f8b0eadSeric { 8109f8b0eadSeric RealHostName = "localhost"; 8119f8b0eadSeric (void) sprintf(hbuf, "%s@localhost", RealUserName); 81253853673Seric if (tTd(9, 1)) 8139f8b0eadSeric printf("getauthinfo: %s\n", hbuf); 814320e0d1cSeric return hbuf; 815320e0d1cSeric } 8169f8b0eadSeric 8179f8b0eadSeric RealHostName = newstr(hostnamebyanyaddr(&fa)); 8189f8b0eadSeric RealHostAddr = fa; 8199f8b0eadSeric 8209f8b0eadSeric #ifdef IDENTPROTO 8219f8b0eadSeric lalen = sizeof la; 8229f8b0eadSeric if (fa.sa.sa_family != AF_INET || 8239f8b0eadSeric getsockname(fd, &la.sa, &lalen) < 0 || lalen <= 0 || 8249f8b0eadSeric la.sa.sa_family != AF_INET) 8259f8b0eadSeric { 8269f8b0eadSeric /* no ident info */ 8279f8b0eadSeric goto noident; 8289f8b0eadSeric } 8299f8b0eadSeric 8309f8b0eadSeric /* create ident query */ 8319f8b0eadSeric (void) sprintf(hbuf, "%d,%d\r\n", fa.sin.sin_port, la.sin.sin_port); 8329f8b0eadSeric 8339f8b0eadSeric /* create local address */ 8349f8b0eadSeric bzero(&la, sizeof la); 8359f8b0eadSeric 8369f8b0eadSeric /* create foreign address */ 8379f8b0eadSeric sp = getservbyname("auth", "tcp"); 8389f8b0eadSeric if (sp != NULL) 8399f8b0eadSeric fa.sin.sin_port = sp->s_port; 8409f8b0eadSeric else 8411038598cSeric fa.sin.sin_port = htons(113); 8429f8b0eadSeric 8439f8b0eadSeric s = -1; 8449f8b0eadSeric if (setjmp(CtxAuthTimeout) != 0) 8459f8b0eadSeric { 8469f8b0eadSeric if (s >= 0) 8479f8b0eadSeric (void) close(s); 8489f8b0eadSeric goto noident; 8499f8b0eadSeric } 8509f8b0eadSeric 8519f8b0eadSeric /* put a timeout around the whole thing */ 8529f8b0eadSeric ev = setevent((time_t) 30, authtimeout, 0); 8539f8b0eadSeric 8549f8b0eadSeric /* connect to foreign IDENT server */ 8559f8b0eadSeric s = socket(AF_INET, SOCK_STREAM, 0); 8569f8b0eadSeric if (s < 0) 8579f8b0eadSeric { 8589f8b0eadSeric clrevent(ev); 8599f8b0eadSeric goto noident; 8609f8b0eadSeric } 8619f8b0eadSeric if (connect(s, &fa.sa, sizeof fa.sin) < 0) 8629f8b0eadSeric { 8639f8b0eadSeric closeident: 8649f8b0eadSeric (void) close(s); 8659f8b0eadSeric clrevent(ev); 8669f8b0eadSeric goto noident; 8679f8b0eadSeric } 8689f8b0eadSeric 86953853673Seric if (tTd(9, 10)) 8709f8b0eadSeric printf("getauthinfo: sent %s", hbuf); 8719f8b0eadSeric 8729f8b0eadSeric /* send query */ 8739f8b0eadSeric if (write(s, hbuf, strlen(hbuf)) < 0) 8749f8b0eadSeric goto closeident; 8759f8b0eadSeric 8769f8b0eadSeric /* get result */ 8779f8b0eadSeric i = read(s, hbuf, sizeof hbuf); 8789f8b0eadSeric (void) close(s); 8799f8b0eadSeric clrevent(ev); 8809f8b0eadSeric if (i <= 0) 8819f8b0eadSeric goto noident; 8829f8b0eadSeric if (hbuf[--i] == '\n' && hbuf[--i] == '\r') 8839f8b0eadSeric i--; 8849f8b0eadSeric hbuf[++i] = '\0'; 8859f8b0eadSeric 88653853673Seric if (tTd(9, 3)) 8879f8b0eadSeric printf("getauthinfo: got %s\n", hbuf); 8889f8b0eadSeric 8899f8b0eadSeric /* parse result */ 8909f8b0eadSeric p = strchr(hbuf, ':'); 8919f8b0eadSeric if (p == NULL) 8929f8b0eadSeric { 8939f8b0eadSeric /* malformed response */ 8949f8b0eadSeric goto noident; 8959f8b0eadSeric } 8969f8b0eadSeric while (isascii(*++p) && isspace(*p)) 8979f8b0eadSeric continue; 8989f8b0eadSeric if (strncasecmp(p, "userid", 6) != 0) 8999f8b0eadSeric { 9009f8b0eadSeric /* presumably an error string */ 9019f8b0eadSeric goto noident; 9029f8b0eadSeric } 9039f8b0eadSeric p += 6; 9049f8b0eadSeric while (isascii(*p) && isspace(*p)) 9059f8b0eadSeric p++; 9069f8b0eadSeric if (*p++ != ':') 9079f8b0eadSeric { 9089f8b0eadSeric /* either useridxx or malformed response */ 9099f8b0eadSeric goto noident; 9109f8b0eadSeric } 9119f8b0eadSeric 9129f8b0eadSeric /* p now points to the OSTYPE field */ 9139f8b0eadSeric p = strchr(p, ':'); 9149f8b0eadSeric if (p == NULL) 9159f8b0eadSeric { 9169f8b0eadSeric /* malformed response */ 9179f8b0eadSeric goto noident; 9189f8b0eadSeric } 91953853673Seric 92053853673Seric /* 1413 says don't do this -- but it's broken otherwise */ 92153853673Seric while (isascii(*++p) && isspace(*p)) 92253853673Seric continue; 9239f8b0eadSeric 9249f8b0eadSeric /* p now points to the authenticated name */ 9259f8b0eadSeric (void) sprintf(hbuf, "%s@%s", p, RealHostName); 92653853673Seric goto finish; 92753853673Seric 92853853673Seric #endif /* IDENTPROTO */ 92953853673Seric 93053853673Seric noident: 93153853673Seric (void) strcpy(hbuf, RealHostName); 93253853673Seric 93353853673Seric finish: 9349f8b0eadSeric if (RealHostName[0] != '[') 9359f8b0eadSeric { 9369f8b0eadSeric p = &hbuf[strlen(hbuf)]; 9379f8b0eadSeric (void) sprintf(p, " [%s]", anynet_ntoa(&RealHostAddr)); 9389f8b0eadSeric } 93953853673Seric if (tTd(9, 1)) 9409f8b0eadSeric printf("getauthinfo: %s\n", hbuf); 9419f8b0eadSeric return hbuf; 9429f8b0eadSeric } 943320e0d1cSeric /* 94408de856eSeric ** HOST_MAP_LOOKUP -- turn a hostname into canonical form 94515d084d5Seric ** 94615d084d5Seric ** Parameters: 94705b57da8Seric ** map -- a pointer to this map (unused). 94808de856eSeric ** name -- the (presumably unqualified) hostname. 949*00b385a9Seric ** av -- unused -- for compatibility with other mapping 950d798a1deSeric ** functions. 9512d29d43aSeric ** statp -- an exit status (out parameter) -- set to 9522d29d43aSeric ** EX_TEMPFAIL if the name server is unavailable. 95315d084d5Seric ** 95415d084d5Seric ** Returns: 95515d084d5Seric ** The mapping, if found. 95615d084d5Seric ** NULL if no mapping found. 95715d084d5Seric ** 95815d084d5Seric ** Side Effects: 95915d084d5Seric ** Looks up the host specified in hbuf. If it is not 96015d084d5Seric ** the canonical name for that host, return the canonical 96115d084d5Seric ** name. 962f36ede03Sbostic */ 963cb452edcSeric 96415d084d5Seric char * 965*00b385a9Seric host_map_lookup(map, name, av, statp) 96605b57da8Seric MAP *map; 96708de856eSeric char *name; 968*00b385a9Seric char **av; 9692d29d43aSeric int *statp; 97099f7cf32Seric { 97199f7cf32Seric register struct hostent *hp; 9725f78836eSmiriam u_long in_addr; 97305b57da8Seric char *cp; 97438ad259dSeric int i; 975eea91d78Seric register STAB *s; 976*00b385a9Seric char hbuf[MAXNAME]; 977eea91d78Seric extern struct hostent *gethostbyaddr(); 978eea91d78Seric extern int h_errno; 979*00b385a9Seric extern char *map_rewrite(); 9805f78836eSmiriam 981f36ede03Sbostic /* 982eea91d78Seric ** See if we have already looked up this name. If so, just 983eea91d78Seric ** return it. 984eea91d78Seric */ 985eea91d78Seric 98608de856eSeric s = stab(name, ST_NAMECANON, ST_ENTER); 987eea91d78Seric if (bitset(NCF_VALID, s->s_namecanon.nc_flags)) 988eea91d78Seric { 989f92c3297Seric if (tTd(9, 1)) 99008de856eSeric printf("host_map_lookup(%s) => CACHE %s\n", 99108de856eSeric name, s->s_namecanon.nc_cname); 992eea91d78Seric errno = s->s_namecanon.nc_errno; 993eea91d78Seric h_errno = s->s_namecanon.nc_herrno; 994eea91d78Seric *statp = s->s_namecanon.nc_stat; 995eea91d78Seric return s->s_namecanon.nc_cname; 996eea91d78Seric } 997eea91d78Seric 998eea91d78Seric /* 999eea91d78Seric ** If first character is a bracket, then it is an address 1000eea91d78Seric ** lookup. Address is copied into a temporary buffer to 100108de856eSeric ** strip the brackets and to preserve name if address is 1002eea91d78Seric ** unknown. 1003f36ede03Sbostic */ 100415d084d5Seric 100508de856eSeric if (*name != '[') 100615d084d5Seric { 1007d798a1deSeric extern bool getcanonname(); 1008d798a1deSeric 10098cb4653dSeric if (tTd(9, 1)) 101008de856eSeric printf("host_map_lookup(%s) => ", name); 1011eea91d78Seric s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ 101208de856eSeric (void) strcpy(hbuf, name); 101308de856eSeric if (getcanonname(hbuf, sizeof hbuf - 1)) 10149040ec4fSeric { 10159040ec4fSeric if (tTd(9, 1)) 10169040ec4fSeric printf("%s\n", hbuf); 1017*00b385a9Seric cp = map_rewrite(map, hbuf, strlen(hbuf), av); 1018*00b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 1019*00b385a9Seric return cp; 10209040ec4fSeric } 102115d084d5Seric else 10229040ec4fSeric { 10232d29d43aSeric register struct hostent *hp; 10242d29d43aSeric 10259040ec4fSeric if (tTd(9, 1)) 10262d29d43aSeric printf("FAIL (%d)\n", h_errno); 1027eea91d78Seric s->s_namecanon.nc_errno = errno; 1028eea91d78Seric s->s_namecanon.nc_herrno = h_errno; 10292d29d43aSeric switch (h_errno) 10302d29d43aSeric { 10312d29d43aSeric case TRY_AGAIN: 103289cb2793Seric if (UseNameServer) 10338820d51bSeric { 10348820d51bSeric char *msg = "Recipient domain nameserver timed out"; 10358820d51bSeric 10368820d51bSeric message(msg); 10378820d51bSeric if (CurEnv->e_message == NULL) 103898da658aSeric CurEnv->e_message = newstr(msg); 10398820d51bSeric } 10402d29d43aSeric *statp = EX_TEMPFAIL; 10412d29d43aSeric break; 10422d29d43aSeric 10432d29d43aSeric case HOST_NOT_FOUND: 10442d29d43aSeric *statp = EX_NOHOST; 10452d29d43aSeric break; 10462d29d43aSeric 10472d29d43aSeric case NO_RECOVERY: 10482d29d43aSeric *statp = EX_SOFTWARE; 10492d29d43aSeric break; 10502d29d43aSeric 10512d29d43aSeric default: 10522d29d43aSeric *statp = EX_UNAVAILABLE; 10532d29d43aSeric break; 10542d29d43aSeric } 1055eea91d78Seric s->s_namecanon.nc_stat = *statp; 10562d29d43aSeric if (*statp != EX_TEMPFAIL || UseNameServer) 105715d084d5Seric return NULL; 10582d29d43aSeric 10592d29d43aSeric /* 10602d29d43aSeric ** Try to look it up in /etc/hosts 10612d29d43aSeric */ 10622d29d43aSeric 106308de856eSeric hp = gethostbyname(name); 10642d29d43aSeric if (hp == NULL) 10652d29d43aSeric { 10662d29d43aSeric /* no dice there either */ 1067eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_NOHOST; 10682d29d43aSeric return NULL; 10692d29d43aSeric } 10702d29d43aSeric 1071eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_OK; 1072*00b385a9Seric cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); 1073*00b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 1074*00b385a9Seric return cp; 107515d084d5Seric } 10769040ec4fSeric } 107708de856eSeric if ((cp = strchr(name, ']')) == NULL) 107815d084d5Seric return (NULL); 107934e39927Sbostic *cp = '\0'; 108008de856eSeric in_addr = inet_addr(&name[1]); 108138ad259dSeric 108238ad259dSeric /* check to see if this is one of our addresses */ 108338ad259dSeric for (i = 0; MyIpAddrs[i].s_addr != 0; i++) 108438ad259dSeric { 108538ad259dSeric if (MyIpAddrs[i].s_addr == in_addr) 108638ad259dSeric { 1087*00b385a9Seric return map_rewrite(map, MyHostName, strlen(MyHostName), av); 108838ad259dSeric } 108938ad259dSeric } 109038ad259dSeric 109138ad259dSeric /* nope -- ask the name server */ 109231601fa7Seric hp = gethostbyaddr((char *)&in_addr, sizeof(struct in_addr), AF_INET); 1093eea91d78Seric s->s_namecanon.nc_errno = errno; 1094eea91d78Seric s->s_namecanon.nc_herrno = h_errno; 1095eea91d78Seric s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ 10965f78836eSmiriam if (hp == NULL) 1097eea91d78Seric { 1098eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_NOHOST; 109915d084d5Seric return (NULL); 1100eea91d78Seric } 110115d084d5Seric 110238ad259dSeric /* found a match -- copy out */ 1103*00b385a9Seric cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); 1104eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_OK; 1105*00b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 1106*00b385a9Seric return cp; 110799f7cf32Seric } 1108e2f2f828Seric /* 1109e2f2f828Seric ** ANYNET_NTOA -- convert a network address to printable form. 1110e2f2f828Seric ** 1111e2f2f828Seric ** Parameters: 1112e2f2f828Seric ** sap -- a pointer to a sockaddr structure. 1113e2f2f828Seric ** 1114e2f2f828Seric ** Returns: 1115e2f2f828Seric ** A printable version of that sockaddr. 1116e2f2f828Seric */ 1117e2f2f828Seric 1118e2f2f828Seric char * 1119e2f2f828Seric anynet_ntoa(sap) 1120e2f2f828Seric register SOCKADDR *sap; 1121e2f2f828Seric { 1122e2f2f828Seric register char *bp; 1123e2f2f828Seric register char *ap; 1124e2f2f828Seric int l; 1125e2f2f828Seric static char buf[80]; 1126e2f2f828Seric 11278cb4653dSeric /* check for null/zero family */ 11288cb4653dSeric if (sap == NULL) 11298cb4653dSeric return "NULLADDR"; 11308cb4653dSeric if (sap->sa.sa_family == 0) 11318cb4653dSeric return "0"; 11328cb4653dSeric 113383c1f4bcSeric #ifdef NETINET 113483c1f4bcSeric if (sap->sa.sa_family == AF_INET) 1135e2f2f828Seric { 1136e2f2f828Seric extern char *inet_ntoa(); 1137e2f2f828Seric 1138e2f2f828Seric return inet_ntoa(((struct sockaddr_in *) sap)->sin_addr); 1139e2f2f828Seric } 114083c1f4bcSeric #endif 1141e2f2f828Seric 1142e2f2f828Seric /* unknown family -- just dump bytes */ 114383c1f4bcSeric (void) sprintf(buf, "Family %d: ", sap->sa.sa_family); 1144e2f2f828Seric bp = &buf[strlen(buf)]; 114583c1f4bcSeric ap = sap->sa.sa_data; 114683c1f4bcSeric for (l = sizeof sap->sa.sa_data; --l >= 0; ) 1147e2f2f828Seric { 1148e2f2f828Seric (void) sprintf(bp, "%02x:", *ap++ & 0377); 1149e2f2f828Seric bp += 3; 1150e2f2f828Seric } 1151e2f2f828Seric *--bp = '\0'; 1152e2f2f828Seric return buf; 1153e2f2f828Seric } 11549f8b0eadSeric /* 11559f8b0eadSeric ** HOSTNAMEBYANYADDR -- return name of host based on address 11569f8b0eadSeric ** 11579f8b0eadSeric ** Parameters: 11589f8b0eadSeric ** sap -- SOCKADDR pointer 11599f8b0eadSeric ** 11609f8b0eadSeric ** Returns: 11619f8b0eadSeric ** text representation of host name. 11629f8b0eadSeric ** 11639f8b0eadSeric ** Side Effects: 11649f8b0eadSeric ** none. 11659f8b0eadSeric */ 11669f8b0eadSeric 11679f8b0eadSeric char * 11689f8b0eadSeric hostnamebyanyaddr(sap) 11699f8b0eadSeric register SOCKADDR *sap; 11709f8b0eadSeric { 11719f8b0eadSeric register struct hostent *hp; 11729f8b0eadSeric 11733490b9dfSeric #ifdef NAMED_BIND 11743490b9dfSeric int saveretry; 11753490b9dfSeric 11763490b9dfSeric /* shorten name server timeout to avoid higher level timeouts */ 11773490b9dfSeric saveretry = _res.retry; 11783490b9dfSeric _res.retry = 3; 11793490b9dfSeric #endif /* NAMED_BIND */ 11803490b9dfSeric 11819f8b0eadSeric switch (sap->sa.sa_family) 11829f8b0eadSeric { 11839f8b0eadSeric #ifdef NETINET 11849f8b0eadSeric case AF_INET: 11859f8b0eadSeric hp = gethostbyaddr((char *) &sap->sin.sin_addr, 11869f8b0eadSeric sizeof sap->sin.sin_addr, 11879f8b0eadSeric AF_INET); 11889f8b0eadSeric break; 11899f8b0eadSeric #endif 11909f8b0eadSeric 11919f8b0eadSeric #ifdef NETISO 11929f8b0eadSeric case AF_ISO: 11939f8b0eadSeric hp = gethostbyaddr((char *) &sap->siso.siso_addr, 11949f8b0eadSeric sizeof sap->siso.siso_addr, 11959f8b0eadSeric AF_ISO); 11969f8b0eadSeric break; 11979f8b0eadSeric #endif 11989f8b0eadSeric 11999f8b0eadSeric default: 12009f8b0eadSeric hp = gethostbyaddr(sap->sa.sa_data, 12019f8b0eadSeric sizeof sap->sa.sa_data, 12029f8b0eadSeric sap->sa.sa_family); 12039f8b0eadSeric break; 12049f8b0eadSeric } 12059f8b0eadSeric 12063490b9dfSeric #ifdef NAMED_BIND 12073490b9dfSeric _res.retry = saveretry; 12083490b9dfSeric #endif /* NAMED_BIND */ 12093490b9dfSeric 12109f8b0eadSeric if (hp != NULL) 12119f8b0eadSeric return hp->h_name; 12129f8b0eadSeric else 12139f8b0eadSeric { 12149f8b0eadSeric /* produce a dotted quad */ 12159f8b0eadSeric static char buf[512]; 12169f8b0eadSeric 12179f8b0eadSeric (void) sprintf(buf, "[%s]", anynet_ntoa(sap)); 12189f8b0eadSeric return buf; 12199f8b0eadSeric } 12209f8b0eadSeric } 1221f36ede03Sbostic 12226c2c3107Seric # else /* DAEMON */ 122399f7cf32Seric /* code for systems without sophisticated networking */ 1224444eaf03Seric 1225444eaf03Seric /* 1226444eaf03Seric ** MYHOSTNAME -- stub version for case of no daemon code. 122721e9914dSeric ** 122821e9914dSeric ** Can't convert to upper case here because might be a UUCP name. 1229897f1869Seric ** 1230897f1869Seric ** Mark, you can change this to be anything you want...... 1231444eaf03Seric */ 1232444eaf03Seric 1233444eaf03Seric char ** 1234897f1869Seric myhostname(hostbuf, size) 1235444eaf03Seric char hostbuf[]; 1236897f1869Seric int size; 1237444eaf03Seric { 1238444eaf03Seric register FILE *f; 1239444eaf03Seric 1240444eaf03Seric hostbuf[0] = '\0'; 1241444eaf03Seric f = fopen("/usr/include/whoami", "r"); 1242444eaf03Seric if (f != NULL) 1243444eaf03Seric { 1244897f1869Seric (void) fgets(hostbuf, size, f); 1245444eaf03Seric fixcrlf(hostbuf, TRUE); 1246444eaf03Seric (void) fclose(f); 1247444eaf03Seric } 1248444eaf03Seric return (NULL); 1249444eaf03Seric } 125099f7cf32Seric /* 12519f8b0eadSeric ** GETAUTHINFO -- get the real host name asociated with a file descriptor 1252320e0d1cSeric ** 1253320e0d1cSeric ** Parameters: 1254320e0d1cSeric ** fd -- the descriptor 1255320e0d1cSeric ** 1256320e0d1cSeric ** Returns: 1257320e0d1cSeric ** The host name associated with this descriptor, if it can 1258320e0d1cSeric ** be determined. 1259320e0d1cSeric ** NULL otherwise. 1260320e0d1cSeric ** 1261320e0d1cSeric ** Side Effects: 1262320e0d1cSeric ** none 1263320e0d1cSeric */ 1264320e0d1cSeric 1265320e0d1cSeric char * 12669f8b0eadSeric getauthinfo(fd) 1267320e0d1cSeric int fd; 1268320e0d1cSeric { 1269320e0d1cSeric return NULL; 1270320e0d1cSeric } 1271320e0d1cSeric /* 127299f7cf32Seric ** MAPHOSTNAME -- turn a hostname into canonical form 127399f7cf32Seric ** 127499f7cf32Seric ** Parameters: 127505b57da8Seric ** map -- a pointer to the database map. 127608de856eSeric ** name -- a buffer containing a hostname. 127715d084d5Seric ** avp -- a pointer to a (cf file defined) argument vector. 12782d29d43aSeric ** statp -- an exit status (out parameter). 127999f7cf32Seric ** 128099f7cf32Seric ** Returns: 128115d084d5Seric ** mapped host name 1282cb452edcSeric ** FALSE otherwise. 128399f7cf32Seric ** 128499f7cf32Seric ** Side Effects: 128508de856eSeric ** Looks up the host specified in name. If it is not 128699f7cf32Seric ** the canonical name for that host, replace it with 128799f7cf32Seric ** the canonical name. If the name is unknown, or it 128899f7cf32Seric ** is already the canonical name, leave it unchanged. 128999f7cf32Seric */ 129099f7cf32Seric 129199f7cf32Seric /*ARGSUSED*/ 129215d084d5Seric char * 129308de856eSeric host_map_lookup(map, name, avp, statp) 129405b57da8Seric MAP *map; 129508de856eSeric char *name; 129615d084d5Seric char **avp; 12972d29d43aSeric char *statp; 129899f7cf32Seric { 12992d29d43aSeric register struct hostent *hp; 13002d29d43aSeric 130108de856eSeric hp = gethostbyname(name); 13022d29d43aSeric if (hp != NULL) 13032d29d43aSeric return hp->h_name; 13042d29d43aSeric *statp = EX_NOHOST; 130515d084d5Seric return NULL; 130699f7cf32Seric } 130799f7cf32Seric 13086c2c3107Seric #endif /* DAEMON */ 1309