1939f5b94Sdist /* 2759969d8Seric * Copyright (c) 1983, 1995 Eric P. Allman 3c9d2fa25Sbostic * Copyright (c) 1988, 1993 4c9d2fa25Sbostic * The Regents of the University of California. All rights reserved. 5da1c6175Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 7939f5b94Sdist */ 8939f5b94Sdist 97aa493c5Seric #include <errno.h> 106c05f684Sbostic #include "sendmail.h" 117fa39d90Seric 12af5e902cSeric #ifndef lint 13da1c6175Sbostic #ifdef DAEMON 14*e7988623Seric static char sccsid[] = "@(#)daemon.c 8.85 (Berkeley) 05/13/95 (with daemon mode)"; 15d0a9e852Seric #else 16*e7988623Seric static char sccsid[] = "@(#)daemon.c 8.85 (Berkeley) 05/13/95 (without daemon mode)"; 17da1c6175Sbostic #endif 18da1c6175Sbostic #endif /* not lint */ 19da1c6175Sbostic 20da1c6175Sbostic #ifdef DAEMON 21d0a9e852Seric 22d8d0a4aeSeric # include <arpa/inet.h> 23d0a9e852Seric 249d4a8008Seric #if NAMED_BIND 253490b9dfSeric # include <resolv.h> 263490b9dfSeric #endif 273490b9dfSeric 287fa39d90Seric /* 297fa39d90Seric ** DAEMON.C -- routines to use when running as a daemon. 3047b12ae1Seric ** 3147b12ae1Seric ** This entire file is highly dependent on the 4.2 BSD 3247b12ae1Seric ** interprocess communication primitives. No attempt has 3347b12ae1Seric ** been made to make this file portable to Version 7, 3447b12ae1Seric ** Version 6, MPX files, etc. If you should try such a 3547b12ae1Seric ** thing yourself, I recommend chucking the entire file 3647b12ae1Seric ** and starting from scratch. Basic semantics are: 3747b12ae1Seric ** 3847b12ae1Seric ** getrequests() 3947b12ae1Seric ** Opens a port and initiates a connection. 4047b12ae1Seric ** Returns in a child. Must set InChannel and 4147b12ae1Seric ** OutChannel appropriately. 42b7d7afcbSeric ** clrdaemon() 43b7d7afcbSeric ** Close any open files associated with getting 44b7d7afcbSeric ** the connection; this is used when running the queue, 45b7d7afcbSeric ** etc., to avoid having extra file descriptors during 46b7d7afcbSeric ** the queue run and to avoid confusing the network 47b7d7afcbSeric ** code (if it cares). 48914346b1Seric ** makeconnection(host, port, outfile, infile, usesecureport) 4947b12ae1Seric ** Make a connection to the named host on the given 5047b12ae1Seric ** port. Set *outfile and *infile to the files 5147b12ae1Seric ** appropriate for communication. Returns zero on 5247b12ae1Seric ** success, else an exit status describing the 5347b12ae1Seric ** error. 5408de856eSeric ** host_map_lookup(map, hbuf, avp, pstat) 5505b57da8Seric ** Convert the entry in hbuf into a canonical form. 567fa39d90Seric */ 577fa39d90Seric /* 587fa39d90Seric ** GETREQUESTS -- open mail IPC port and get requests. 597fa39d90Seric ** 607fa39d90Seric ** Parameters: 617fa39d90Seric ** none. 627fa39d90Seric ** 637fa39d90Seric ** Returns: 647fa39d90Seric ** none. 657fa39d90Seric ** 667fa39d90Seric ** Side Effects: 677fa39d90Seric ** Waits until some interesting activity occurs. When 687fa39d90Seric ** it does, a child is created to process it, and the 697fa39d90Seric ** parent waits for completion. Return from this 70147303b1Seric ** routine is always in the child. The file pointers 71147303b1Seric ** "InChannel" and "OutChannel" should be set to point 72147303b1Seric ** to the communication channel. 737fa39d90Seric */ 747fa39d90Seric 75b7d7afcbSeric int DaemonSocket = -1; /* fd describing socket */ 76bfb80540Seric SOCKADDR DaemonAddr; /* socket for incoming */ 77bfc1eaf8Seric int ListenQueueSize = 10; /* size of listen queue */ 78b35447dbSeric int TcpRcvBufferSize = 0; /* size of TCP receive buffer */ 79b35447dbSeric int TcpSndBufferSize = 0; /* size of TCP send buffer */ 801c71e510Seric 818b212fe0Seric void 827fa39d90Seric getrequests() 837fa39d90Seric { 841c71e510Seric int t; 8515d084d5Seric bool refusingconnections = TRUE; 860aae1086Seric FILE *pidf; 87dadb8687Seric int socksize; 88dfe840b2Seric #ifdef XDEBUG 89dfe840b2Seric bool j_has_dot; 90dfe840b2Seric #endif 919b100374Sbostic extern void reapchild(); 92eb889047Seric 93a8268164Seric /* 941c71e510Seric ** Set up the address for the mailer. 95eb889047Seric */ 96eb889047Seric 97bfb80540Seric if (DaemonAddr.sin.sin_family == 0) 98bfb80540Seric DaemonAddr.sin.sin_family = AF_INET; 99bfb80540Seric if (DaemonAddr.sin.sin_addr.s_addr == 0) 100bfb80540Seric DaemonAddr.sin.sin_addr.s_addr = INADDR_ANY; 101bfb80540Seric if (DaemonAddr.sin.sin_port == 0) 102bfb80540Seric { 103e5311662Seric register struct servent *sp; 104e5311662Seric 1051c71e510Seric sp = getservbyname("smtp", "tcp"); 1061c71e510Seric if (sp == NULL) 107d0a9e852Seric { 108ad977999Seric syserr("554 service \"smtp\" unknown"); 109e5311662Seric DaemonAddr.sin.sin_port = htons(25); 1101c71e510Seric } 111e5311662Seric else 112bfb80540Seric DaemonAddr.sin.sin_port = sp->s_port; 113bfb80540Seric } 1141c71e510Seric 1151c71e510Seric /* 1161c71e510Seric ** Try to actually open the connection. 1171c71e510Seric */ 1181c71e510Seric 1191c71e510Seric if (tTd(15, 1)) 120bfb80540Seric printf("getrequests: port 0x%x\n", DaemonAddr.sin.sin_port); 1211c71e510Seric 1221c71e510Seric /* get a socket for the SMTP connection */ 12388ea5609Seric socksize = opendaemonsocket(TRUE); 1241c71e510Seric 1252b9178d3Seric (void) setsignal(SIGCHLD, reapchild); 12652308a50Seric 1270aae1086Seric /* write the pid to the log file for posterity */ 1280aae1086Seric pidf = fopen(PidFile, "w"); 1290aae1086Seric if (pidf != NULL) 1300aae1086Seric { 13137950f67Seric extern char *CommandLineArgs; 13237950f67Seric 13337950f67Seric /* write the process id on line 1 */ 1340aae1086Seric fprintf(pidf, "%d\n", getpid()); 13537950f67Seric 13637950f67Seric /* line 2 contains all command line flags */ 13737950f67Seric fprintf(pidf, "%s\n", CommandLineArgs); 13837950f67Seric 13937950f67Seric /* flush and close */ 1400aae1086Seric fclose(pidf); 1410aae1086Seric } 1420aae1086Seric 143dfe840b2Seric #ifdef XDEBUG 144dfe840b2Seric { 14535852b23Seric char jbuf[MAXHOSTNAMELEN]; 146dfe840b2Seric 1478b212fe0Seric expand("\201j", jbuf, sizeof jbuf, CurEnv); 14835852b23Seric j_has_dot = strchr(jbuf, '.') != NULL; 149dfe840b2Seric } 150dfe840b2Seric #endif 1510aae1086Seric 1521c71e510Seric if (tTd(15, 1)) 153b7d7afcbSeric printf("getrequests: %d\n", DaemonSocket); 1541c71e510Seric 1551c71e510Seric for (;;) 1561c71e510Seric { 1573a099713Seric register int pid; 158a44d5a5eSeric auto int lotherend; 15915d084d5Seric extern bool refuseconnections(); 1608b212fe0Seric extern int getla(); 1613a099713Seric 1623a099713Seric /* see if we are rejecting connections */ 16315d084d5Seric CurrentLA = getla(); 16415d084d5Seric if (refuseconnections()) 1656775ec03Sbostic { 1660084e6f6Seric if (DaemonSocket >= 0) 16715d084d5Seric { 1680084e6f6Seric /* close socket so peer will fail quickly */ 1690084e6f6Seric (void) close(DaemonSocket); 1700084e6f6Seric DaemonSocket = -1; 17115d084d5Seric } 1720084e6f6Seric refusingconnections = TRUE; 17371e5e267Seric setproctitle("rejecting connections: load average: %d", 17471e5e267Seric CurrentLA); 1750084e6f6Seric sleep(15); 17615d084d5Seric continue; 17715d084d5Seric } 17815d084d5Seric 1798b212fe0Seric /* arrange to (re)open the socket if necessary */ 18015d084d5Seric if (refusingconnections) 18115d084d5Seric { 1828a0cb579Seric (void) opendaemonsocket(FALSE); 18315d084d5Seric setproctitle("accepting connections"); 18415d084d5Seric refusingconnections = FALSE; 1856775ec03Sbostic } 186a44d5a5eSeric 187dfe840b2Seric #ifdef XDEBUG 188dfe840b2Seric /* check for disaster */ 189dfe840b2Seric { 19035852b23Seric char jbuf[MAXHOSTNAMELEN]; 191dfe840b2Seric 1928b212fe0Seric expand("\201j", jbuf, sizeof jbuf, CurEnv); 1938b212fe0Seric if (!wordinclass(jbuf, 'w')) 194dfe840b2Seric { 195dfe840b2Seric dumpstate("daemon lost $j"); 196dfe840b2Seric syslog(LOG_ALERT, "daemon process doesn't have $j in $=w; see syslog"); 197dfe840b2Seric abort(); 198dfe840b2Seric } 19935852b23Seric else if (j_has_dot && strchr(jbuf, '.') == NULL) 200dfe840b2Seric { 201dfe840b2Seric dumpstate("daemon $j lost dot"); 202dfe840b2Seric syslog(LOG_ALERT, "daemon process $j lost dot; see syslog"); 203dfe840b2Seric abort(); 204dfe840b2Seric } 205dfe840b2Seric } 206dfe840b2Seric #endif 207dfe840b2Seric 2081c71e510Seric /* wait for a connection */ 2091c71e510Seric do 2101c71e510Seric { 2111c71e510Seric errno = 0; 212dadb8687Seric lotherend = socksize; 2139b100374Sbostic t = accept(DaemonSocket, 2149b100374Sbostic (struct sockaddr *)&RealHostAddr, &lotherend); 2151c71e510Seric } while (t < 0 && errno == EINTR); 2161c71e510Seric if (t < 0) 2171c71e510Seric { 2181c71e510Seric syserr("getrequests: accept"); 2198b212fe0Seric 2208b212fe0Seric /* arrange to re-open the socket next time around */ 2218b212fe0Seric (void) close(DaemonSocket); 2228b212fe0Seric DaemonSocket = -1; 2231c71e510Seric sleep(5); 2241c71e510Seric continue; 2251c71e510Seric } 226d0a9e852Seric 227d0a9e852Seric /* 228d0a9e852Seric ** Create a subprocess to process the mail. 229d0a9e852Seric */ 230d0a9e852Seric 23161e4310fSeric if (tTd(15, 2)) 2321c71e510Seric printf("getrequests: forking (fd = %d)\n", t); 233eb889047Seric 234a8268164Seric pid = fork(); 235a8268164Seric if (pid < 0) 236a8268164Seric { 237a8268164Seric syserr("daemon: cannot fork"); 238a8268164Seric sleep(10); 2391c71e510Seric (void) close(t); 240a8268164Seric continue; 241a8268164Seric } 242a8268164Seric 243a8268164Seric if (pid == 0) 244a8268164Seric { 245da662164Seric char *p; 2469f8b0eadSeric extern char *hostnamebyanyaddr(); 2478b212fe0Seric extern void intsig(); 248a44d5a5eSeric 249a8268164Seric /* 250a8268164Seric ** CHILD -- return to caller. 251a44d5a5eSeric ** Collect verified idea of sending host. 252a8268164Seric ** Verify calling user id if possible here. 253a8268164Seric */ 254a8268164Seric 2552b9178d3Seric (void) setsignal(SIGCHLD, SIG_DFL); 2568b212fe0Seric (void) setsignal(SIGHUP, intsig); 2578b212fe0Seric (void) close(DaemonSocket); 2589f9b003eSeric DisConnected = FALSE; 259779ac194Seric 2604dd09a90Seric setproctitle("startup with %s", 2614dd09a90Seric anynet_ntoa(&RealHostAddr)); 2624dd09a90Seric 263a44d5a5eSeric /* determine host name */ 264da662164Seric p = hostnamebyanyaddr(&RealHostAddr); 265da662164Seric RealHostName = newstr(p); 2664dd09a90Seric setproctitle("startup with %s", p); 26729dcf4baSeric 2682a6bc25bSeric #ifdef LOG 2691f2ff1a4Seric if (LogLevel > 11) 2702a6bc25bSeric { 2712a6bc25bSeric /* log connection information */ 2722a6bc25bSeric syslog(LOG_INFO, "connect from %s (%s)", 2739f8b0eadSeric RealHostName, anynet_ntoa(&RealHostAddr)); 2742a6bc25bSeric } 2752a6bc25bSeric #endif 2762a6bc25bSeric 277335eae58Seric if ((InChannel = fdopen(t, "r")) == NULL || 278335eae58Seric (t = dup(t)) < 0 || 279335eae58Seric (OutChannel = fdopen(t, "w")) == NULL) 280335eae58Seric { 281335eae58Seric syserr("cannot open SMTP server channel, fd=%d", t); 282335eae58Seric exit(0); 283335eae58Seric } 284244b09d1Seric 28529dcf4baSeric /* should we check for illegal connection here? XXX */ 286e17a3a5aSeric #ifdef XLA 287e17a3a5aSeric if (!xla_host_ok(RealHostName)) 288e17a3a5aSeric { 289244b09d1Seric message("421 Too many SMTP sessions for this host"); 290e17a3a5aSeric exit(0); 291e17a3a5aSeric } 292e17a3a5aSeric #endif 293a44d5a5eSeric 29461e4310fSeric if (tTd(15, 2)) 295d0a9e852Seric printf("getreq: returning\n"); 296a8268164Seric return; 297a8268164Seric } 298a8268164Seric 2993c154354Seric /* close the port so that others will hang (for a while) */ 3003c154354Seric (void) close(t); 3018e3e4b17Seric } 3023c154354Seric /*NOTREACHED*/ 3033c154354Seric } 3048e3e4b17Seric /* 3050084e6f6Seric ** OPENDAEMONSOCKET -- open the SMTP socket 3060084e6f6Seric ** 3070084e6f6Seric ** Deals with setting all appropriate options. DaemonAddr must 3080084e6f6Seric ** be set up in advance. 3090084e6f6Seric ** 3100084e6f6Seric ** Parameters: 31188ea5609Seric ** firsttime -- set if this is the initial open. 3120084e6f6Seric ** 3130084e6f6Seric ** Returns: 3140084e6f6Seric ** Size in bytes of the daemon socket addr. 3150084e6f6Seric ** 3160084e6f6Seric ** Side Effects: 3170084e6f6Seric ** Leaves DaemonSocket set to the open socket. 3180084e6f6Seric ** Exits if the socket cannot be created. 3190084e6f6Seric */ 3200084e6f6Seric 3216173568dSeric #define MAXOPENTRIES 10 /* maximum number of tries to open connection */ 3226173568dSeric 3230084e6f6Seric int 32488ea5609Seric opendaemonsocket(firsttime) 32588ea5609Seric bool firsttime; 3260084e6f6Seric { 3270084e6f6Seric int on = 1; 3288b212fe0Seric int socksize = 0; 3296173568dSeric int ntries = 0; 3306173568dSeric int saveerrno; 3310084e6f6Seric 3320084e6f6Seric if (tTd(15, 2)) 3330084e6f6Seric printf("opendaemonsocket()\n"); 3340084e6f6Seric 3356173568dSeric do 3366173568dSeric { 337254b93c3Seric if (ntries > 0) 338254b93c3Seric sleep(5); 33988ea5609Seric if (firsttime || DaemonSocket < 0) 34088ea5609Seric { 3410084e6f6Seric DaemonSocket = socket(DaemonAddr.sa.sa_family, SOCK_STREAM, 0); 3420084e6f6Seric if (DaemonSocket < 0) 3430084e6f6Seric { 3440084e6f6Seric /* probably another daemon already */ 3456173568dSeric saveerrno = errno; 3460084e6f6Seric syserr("opendaemonsocket: can't create server SMTP socket"); 3470084e6f6Seric severe: 3480084e6f6Seric # ifdef LOG 3490084e6f6Seric if (LogLevel > 0) 3500084e6f6Seric syslog(LOG_ALERT, "problem creating SMTP socket"); 3510084e6f6Seric # endif /* LOG */ 3526173568dSeric DaemonSocket = -1; 3536173568dSeric continue; 3540084e6f6Seric } 3550084e6f6Seric 3560084e6f6Seric /* turn on network debugging? */ 3570084e6f6Seric if (tTd(15, 101)) 3586173568dSeric (void) setsockopt(DaemonSocket, SOL_SOCKET, 3596173568dSeric SO_DEBUG, (char *)&on, 3606173568dSeric sizeof on); 3610084e6f6Seric 3626173568dSeric (void) setsockopt(DaemonSocket, SOL_SOCKET, 3636173568dSeric SO_REUSEADDR, (char *)&on, sizeof on); 3646173568dSeric (void) setsockopt(DaemonSocket, SOL_SOCKET, 3656173568dSeric SO_KEEPALIVE, (char *)&on, sizeof on); 3660084e6f6Seric 3670084e6f6Seric #ifdef SO_RCVBUF 3680084e6f6Seric if (TcpRcvBufferSize > 0) 3690084e6f6Seric { 3706173568dSeric if (setsockopt(DaemonSocket, SOL_SOCKET, 3716173568dSeric SO_RCVBUF, 3720084e6f6Seric (char *) &TcpRcvBufferSize, 3730084e6f6Seric sizeof(TcpRcvBufferSize)) < 0) 3740084e6f6Seric syserr("getrequests: setsockopt(SO_RCVBUF)"); 3750084e6f6Seric } 3760084e6f6Seric #endif 3770084e6f6Seric 3780084e6f6Seric switch (DaemonAddr.sa.sa_family) 3790084e6f6Seric { 3800084e6f6Seric # ifdef NETINET 3810084e6f6Seric case AF_INET: 3820084e6f6Seric socksize = sizeof DaemonAddr.sin; 3830084e6f6Seric break; 3840084e6f6Seric # endif 3850084e6f6Seric 3860084e6f6Seric # ifdef NETISO 3870084e6f6Seric case AF_ISO: 3880084e6f6Seric socksize = sizeof DaemonAddr.siso; 3890084e6f6Seric break; 3900084e6f6Seric # endif 3910084e6f6Seric 3920084e6f6Seric default: 3930084e6f6Seric socksize = sizeof DaemonAddr; 3940084e6f6Seric break; 3950084e6f6Seric } 3960084e6f6Seric 3970084e6f6Seric if (bind(DaemonSocket, &DaemonAddr.sa, socksize) < 0) 3980084e6f6Seric { 3996173568dSeric saveerrno = errno; 4000084e6f6Seric syserr("getrequests: cannot bind"); 4010084e6f6Seric (void) close(DaemonSocket); 4020084e6f6Seric goto severe; 4030084e6f6Seric } 40488ea5609Seric } 40588ea5609Seric if (!firsttime && listen(DaemonSocket, ListenQueueSize) < 0) 4060084e6f6Seric { 4076173568dSeric saveerrno = errno; 4080084e6f6Seric syserr("getrequests: cannot listen"); 4090084e6f6Seric (void) close(DaemonSocket); 4100084e6f6Seric goto severe; 4110084e6f6Seric } 4120084e6f6Seric return socksize; 4136173568dSeric } while (ntries++ < MAXOPENTRIES && transienterror(saveerrno)); 4148b212fe0Seric syserr("!opendaemonsocket: server SMTP socket wedged: exiting"); 4156173568dSeric finis(); 4160084e6f6Seric } 4170084e6f6Seric /* 418b7d7afcbSeric ** CLRDAEMON -- reset the daemon connection 419b7d7afcbSeric ** 420b7d7afcbSeric ** Parameters: 421b7d7afcbSeric ** none. 422b7d7afcbSeric ** 423b7d7afcbSeric ** Returns: 424b7d7afcbSeric ** none. 425b7d7afcbSeric ** 426b7d7afcbSeric ** Side Effects: 427b7d7afcbSeric ** releases any resources used by the passive daemon. 428b7d7afcbSeric */ 429b7d7afcbSeric 4308b212fe0Seric void 431b7d7afcbSeric clrdaemon() 432b7d7afcbSeric { 433b7d7afcbSeric if (DaemonSocket >= 0) 434b7d7afcbSeric (void) close(DaemonSocket); 435b7d7afcbSeric DaemonSocket = -1; 436b7d7afcbSeric } 437b7d7afcbSeric /* 438bfb80540Seric ** SETDAEMONOPTIONS -- set options for running the daemon 439bfb80540Seric ** 440bfb80540Seric ** Parameters: 441bfb80540Seric ** p -- the options line. 442bfb80540Seric ** 443bfb80540Seric ** Returns: 444bfb80540Seric ** none. 445bfb80540Seric */ 446bfb80540Seric 4478b212fe0Seric void 448bfb80540Seric setdaemonoptions(p) 449bfb80540Seric register char *p; 450bfb80540Seric { 451850144caSeric if (DaemonAddr.sa.sa_family == AF_UNSPEC) 452850144caSeric DaemonAddr.sa.sa_family = AF_INET; 453850144caSeric 454bfb80540Seric while (p != NULL) 455bfb80540Seric { 456bfb80540Seric register char *f; 457bfb80540Seric register char *v; 458bfb80540Seric 459bfb80540Seric while (isascii(*p) && isspace(*p)) 460bfb80540Seric p++; 461bfb80540Seric if (*p == '\0') 462bfb80540Seric break; 463bfb80540Seric f = p; 464bfb80540Seric p = strchr(p, ','); 465bfb80540Seric if (p != NULL) 466bfb80540Seric *p++ = '\0'; 467bfb80540Seric v = strchr(f, '='); 468bfb80540Seric if (v == NULL) 469bfb80540Seric continue; 470bfb80540Seric while (isascii(*++v) && isspace(*v)) 471bfb80540Seric continue; 472*e7988623Seric if (isascii(*f) && isupper(*f)) 473*e7988623Seric *f = tolower(*f); 474bfb80540Seric 475bfb80540Seric switch (*f) 476bfb80540Seric { 477850144caSeric case 'F': /* address family */ 478850144caSeric if (isascii(*v) && isdigit(*v)) 479850144caSeric DaemonAddr.sa.sa_family = atoi(v); 480850144caSeric #ifdef NETINET 481850144caSeric else if (strcasecmp(v, "inet") == 0) 482850144caSeric DaemonAddr.sa.sa_family = AF_INET; 483850144caSeric #endif 484850144caSeric #ifdef NETISO 485850144caSeric else if (strcasecmp(v, "iso") == 0) 486850144caSeric DaemonAddr.sa.sa_family = AF_ISO; 487850144caSeric #endif 488850144caSeric #ifdef NETNS 489850144caSeric else if (strcasecmp(v, "ns") == 0) 490850144caSeric DaemonAddr.sa.sa_family = AF_NS; 491850144caSeric #endif 492850144caSeric #ifdef NETX25 493850144caSeric else if (strcasecmp(v, "x.25") == 0) 494850144caSeric DaemonAddr.sa.sa_family = AF_CCITT; 495850144caSeric #endif 496850144caSeric else 497850144caSeric syserr("554 Unknown address family %s in Family=option", v); 498850144caSeric break; 499850144caSeric 500850144caSeric case 'A': /* address */ 501850144caSeric switch (DaemonAddr.sa.sa_family) 502850144caSeric { 503850144caSeric #ifdef NETINET 504850144caSeric case AF_INET: 505850144caSeric if (isascii(*v) && isdigit(*v)) 5068b212fe0Seric DaemonAddr.sin.sin_addr.s_addr = htonl(inet_network(v)); 507850144caSeric else 508850144caSeric { 509850144caSeric register struct netent *np; 510850144caSeric 511850144caSeric np = getnetbyname(v); 512850144caSeric if (np == NULL) 513850144caSeric syserr("554 network \"%s\" unknown", v); 514850144caSeric else 515850144caSeric DaemonAddr.sin.sin_addr.s_addr = np->n_net; 516850144caSeric } 517850144caSeric break; 518850144caSeric #endif 519850144caSeric 520850144caSeric default: 521850144caSeric syserr("554 Address= option unsupported for family %d", 522850144caSeric DaemonAddr.sa.sa_family); 523850144caSeric break; 524850144caSeric } 525850144caSeric break; 526850144caSeric 527bfb80540Seric case 'P': /* port */ 528850144caSeric switch (DaemonAddr.sa.sa_family) 529850144caSeric { 530850144caSeric short port; 531850144caSeric 532850144caSeric #ifdef NETINET 533850144caSeric case AF_INET: 534bfb80540Seric if (isascii(*v) && isdigit(*v)) 53576b70c58Seric DaemonAddr.sin.sin_port = htons(atoi(v)); 536bfb80540Seric else 537bfb80540Seric { 538bfb80540Seric register struct servent *sp; 539bfb80540Seric 540bfb80540Seric sp = getservbyname(v, "tcp"); 541bfb80540Seric if (sp == NULL) 542ad977999Seric syserr("554 service \"%s\" unknown", v); 543bfb80540Seric else 544bfb80540Seric DaemonAddr.sin.sin_port = sp->s_port; 545bfb80540Seric } 546bfb80540Seric break; 547850144caSeric #endif 548bfb80540Seric 549850144caSeric #ifdef NETISO 550850144caSeric case AF_ISO: 551850144caSeric /* assume two byte transport selector */ 552bfb80540Seric if (isascii(*v) && isdigit(*v)) 55376b70c58Seric port = htons(atoi(v)); 554bfb80540Seric else 555bfb80540Seric { 556850144caSeric register struct servent *sp; 557bfb80540Seric 558850144caSeric sp = getservbyname(v, "tcp"); 559850144caSeric if (sp == NULL) 560ad977999Seric syserr("554 service \"%s\" unknown", v); 561bfb80540Seric else 562850144caSeric port = sp->s_port; 563850144caSeric } 564850144caSeric bcopy((char *) &port, TSEL(&DaemonAddr.siso), 2); 565850144caSeric break; 566850144caSeric #endif 567850144caSeric 568850144caSeric default: 569850144caSeric syserr("554 Port= option unsupported for family %d", 570850144caSeric DaemonAddr.sa.sa_family); 571850144caSeric break; 572bfb80540Seric } 573bfb80540Seric break; 574bfc1eaf8Seric 575bfc1eaf8Seric case 'L': /* listen queue size */ 576bfc1eaf8Seric ListenQueueSize = atoi(v); 577bfc1eaf8Seric break; 578b35447dbSeric 579b35447dbSeric case 'S': /* send buffer size */ 580b35447dbSeric TcpSndBufferSize = atoi(v); 581b35447dbSeric break; 582b35447dbSeric 583b35447dbSeric case 'R': /* receive buffer size */ 584b35447dbSeric TcpRcvBufferSize = atoi(v); 585b35447dbSeric break; 586*e7988623Seric 587*e7988623Seric default: 588*e7988623Seric syserr("554 DaemonPortOptions parameter \"%s\" unknown", f); 589bfb80540Seric } 590bfb80540Seric } 591bfb80540Seric } 592bfb80540Seric /* 5937aa493c5Seric ** MAKECONNECTION -- make a connection to an SMTP socket on another machine. 5947aa493c5Seric ** 5957aa493c5Seric ** Parameters: 5967aa493c5Seric ** host -- the name of the host. 59748ff0a9dSeric ** port -- the port number to connect to. 598655feedbSeric ** mci -- a pointer to the mail connection information 599655feedbSeric ** structure to be filled in. 600914346b1Seric ** usesecureport -- if set, use a low numbered (reserved) 601914346b1Seric ** port to provide some rudimentary authentication. 6027aa493c5Seric ** 6037aa493c5Seric ** Returns: 6047aa493c5Seric ** An exit code telling whether the connection could be 6057aa493c5Seric ** made and if not why not. 6067aa493c5Seric ** 6077aa493c5Seric ** Side Effects: 6087aa493c5Seric ** none. 6097aa493c5Seric */ 6107aa493c5Seric 611e2f2f828Seric SOCKADDR CurHostAddr; /* address of current host */ 61271ff6caaSeric 613b31e7f2bSeric int 614655feedbSeric makeconnection(host, port, mci, usesecureport) 6157aa493c5Seric char *host; 616210215eaSeric u_short port; 617b31e7f2bSeric register MCI *mci; 618914346b1Seric bool usesecureport; 6197aa493c5Seric { 6208b212fe0Seric register int i = 0; 6218b212fe0Seric register int s; 62204344589Sbloom register struct hostent *hp = (struct hostent *)NULL; 623e2f2f828Seric SOCKADDR addr; 6246286bb75Sbloom int sav_errno; 625e2f2f828Seric int addrlen; 6268b212fe0Seric bool firstconnect; 6279d4a8008Seric #if NAMED_BIND 628134746fbSeric extern int h_errno; 629134746fbSeric #endif 6307aa493c5Seric 6317aa493c5Seric /* 6327aa493c5Seric ** Set up the address for the mailer. 63371096d12Seric ** Accept "[a.b.c.d]" syntax for host name. 6347aa493c5Seric */ 6357aa493c5Seric 6369d4a8008Seric #if NAMED_BIND 637794bdbb9Smiriam h_errno = 0; 638134746fbSeric #endif 639794bdbb9Smiriam errno = 0; 640967778e2Seric bzero(&CurHostAddr, sizeof CurHostAddr); 641c931b82bSeric SmtpPhase = mci->mci_phase = "initial connection"; 642d945ebe8Seric CurHostName = host; 643794bdbb9Smiriam 64471096d12Seric if (host[0] == '[') 64571096d12Seric { 646a44d5a5eSeric long hid; 6476c2c3107Seric register char *p = strchr(host, ']'); 64871096d12Seric 649a44d5a5eSeric if (p != NULL) 65071096d12Seric { 651a44d5a5eSeric *p = '\0'; 6524d9c42c2Seric #ifdef NETINET 653a44d5a5eSeric hid = inet_addr(&host[1]); 654a7e21fe6Seric if (hid == -1) 6554d9c42c2Seric #endif 656a7e21fe6Seric { 657a7e21fe6Seric /* try it as a host name (avoid MX lookup) */ 6588b212fe0Seric hp = sm_gethostbyname(&host[1]); 659d8984352Seric if (hp == NULL && p[-1] == '.') 660d8984352Seric { 6618b212fe0Seric #if NAMED_BIND 6628b212fe0Seric int oldopts = _res.options; 6638b212fe0Seric 6648b212fe0Seric _res.options &= ~(RES_DEFNAMES|RES_DNSRCH); 6658b212fe0Seric #endif 666d8984352Seric p[-1] = '\0'; 6678b212fe0Seric hp = sm_gethostbyname(&host[1]); 668d8984352Seric p[-1] = '.'; 6698b212fe0Seric #if NAMED_BIND 6708b212fe0Seric _res.options = oldopts; 6718b212fe0Seric #endif 672d8984352Seric } 673a7e21fe6Seric *p = ']'; 674a7e21fe6Seric goto gothostent; 675a7e21fe6Seric } 676a44d5a5eSeric *p = ']'; 67771096d12Seric } 678a7e21fe6Seric if (p == NULL) 67971096d12Seric { 68008b25121Seric usrerr("553 Invalid numeric domain spec \"%s\"", host); 6815b068d51Seric mci->mci_status = "5.1.2"; 68271096d12Seric return (EX_NOHOST); 68371096d12Seric } 6844d9c42c2Seric #ifdef NETINET 6854d9c42c2Seric addr.sin.sin_family = AF_INET; /*XXX*/ 68683c1f4bcSeric addr.sin.sin_addr.s_addr = hid; 6874d9c42c2Seric #endif 68871096d12Seric } 6891c71e510Seric else 6901c71e510Seric { 691d8984352Seric register char *p = &host[strlen(host) - 1]; 692d8984352Seric 6938b212fe0Seric hp = sm_gethostbyname(host); 694d8984352Seric if (hp == NULL && *p == '.') 695d8984352Seric { 6968b212fe0Seric #if NAMED_BIND 6978b212fe0Seric int oldopts = _res.options; 6988b212fe0Seric 6998b212fe0Seric _res.options &= ~(RES_DEFNAMES|RES_DNSRCH); 7008b212fe0Seric #endif 701d8984352Seric *p = '\0'; 7028b212fe0Seric hp = sm_gethostbyname(host); 703d8984352Seric *p = '.'; 7048b212fe0Seric #if NAMED_BIND 7058b212fe0Seric _res.options = oldopts; 7068b212fe0Seric #endif 707d8984352Seric } 708a7e21fe6Seric gothostent: 709794bdbb9Smiriam if (hp == NULL) 710794bdbb9Smiriam { 7119d4a8008Seric #if NAMED_BIND 7128b212fe0Seric /* check for name server timeouts */ 7138b212fe0Seric if (errno == ETIMEDOUT || h_errno == TRY_AGAIN || 7148b212fe0Seric (errno == ECONNREFUSED && UseNameServer)) 7158b212fe0Seric { 7168b212fe0Seric mci->mci_status = "4.4.3"; 71752308a50Seric return (EX_TEMPFAIL); 7188b212fe0Seric } 719134746fbSeric #endif 7207aa493c5Seric return (EX_NOHOST); 721794bdbb9Smiriam } 72283c1f4bcSeric addr.sa.sa_family = hp->h_addrtype; 72383c1f4bcSeric switch (hp->h_addrtype) 72483c1f4bcSeric { 72583c1f4bcSeric #ifdef NETINET 72683c1f4bcSeric case AF_INET: 727e2f2f828Seric bcopy(hp->h_addr, 72883c1f4bcSeric &addr.sin.sin_addr, 7298b212fe0Seric INADDRSZ); 73083c1f4bcSeric break; 73183c1f4bcSeric #endif 73283c1f4bcSeric 73383c1f4bcSeric default: 734e2f2f828Seric bcopy(hp->h_addr, 73583c1f4bcSeric addr.sa.sa_data, 736e2f2f828Seric hp->h_length); 73783c1f4bcSeric break; 73883c1f4bcSeric } 73904344589Sbloom i = 1; 7401c71e510Seric } 7411c71e510Seric 7421c71e510Seric /* 7431c71e510Seric ** Determine the port number. 7441c71e510Seric */ 7451c71e510Seric 746fd7c0790Seric if (port != 0) 747e2f2f828Seric port = htons(port); 748fd7c0790Seric else 7491c71e510Seric { 7501c71e510Seric register struct servent *sp = getservbyname("smtp", "tcp"); 7511c71e510Seric 7521c71e510Seric if (sp == NULL) 7531c71e510Seric { 7543edb2e00Seric #ifdef LOG 7553edb2e00Seric if (LogLevel > 2) 7563edb2e00Seric syslog(LOG_ERR, "makeconnection: service \"smtp\" unknown"); 7573edb2e00Seric #endif 758e5311662Seric port = htons(25); 7591c71e510Seric } 760e5311662Seric else 761e2f2f828Seric port = sp->s_port; 762e2f2f828Seric } 763e2f2f828Seric 76483c1f4bcSeric switch (addr.sa.sa_family) 765e2f2f828Seric { 7664d9c42c2Seric #ifdef NETINET 767e2f2f828Seric case AF_INET: 76883c1f4bcSeric addr.sin.sin_port = port; 769e2f2f828Seric addrlen = sizeof (struct sockaddr_in); 770e2f2f828Seric break; 7714d9c42c2Seric #endif 772e2f2f828Seric 773e2f2f828Seric #ifdef NETISO 774e2f2f828Seric case AF_ISO: 775e2f2f828Seric /* assume two byte transport selector */ 776e2f2f828Seric bcopy((char *) &port, TSEL((struct sockaddr_iso *) &addr), 2); 777e2f2f828Seric addrlen = sizeof (struct sockaddr_iso); 778e2f2f828Seric break; 779e2f2f828Seric #endif 780e2f2f828Seric 781e2f2f828Seric default: 78283c1f4bcSeric syserr("Can't connect to address family %d", addr.sa.sa_family); 783e2f2f828Seric return (EX_NOHOST); 7841c71e510Seric } 7857aa493c5Seric 7867aa493c5Seric /* 7877aa493c5Seric ** Try to actually open the connection. 7887aa493c5Seric */ 7897aa493c5Seric 790e17a3a5aSeric #ifdef XLA 791e17a3a5aSeric /* if too many connections, don't bother trying */ 792e17a3a5aSeric if (!xla_noqueue_ok(host)) 793e17a3a5aSeric return EX_TEMPFAIL; 794e17a3a5aSeric #endif 795e17a3a5aSeric 7968b212fe0Seric firstconnect = TRUE; 797aea02ca1Seric for (;;) 798aea02ca1Seric { 79961e4310fSeric if (tTd(16, 1)) 800e2f2f828Seric printf("makeconnection (%s [%s])\n", 801e2f2f828Seric host, anynet_ntoa(&addr)); 8027aa493c5Seric 803226e3022Seric /* save for logging */ 804226e3022Seric CurHostAddr = addr; 805226e3022Seric 806914346b1Seric if (usesecureport) 807914346b1Seric { 808914346b1Seric int rport = IPPORT_RESERVED - 1; 809914346b1Seric 810914346b1Seric s = rresvport(&rport); 811914346b1Seric } 812914346b1Seric else 813914346b1Seric { 814af5e902cSeric s = socket(AF_INET, SOCK_STREAM, 0); 815914346b1Seric } 8167aa493c5Seric if (s < 0) 8177aa493c5Seric { 8186286bb75Sbloom sav_errno = errno; 819914346b1Seric syserr("makeconnection: no socket"); 8207aa493c5Seric goto failure; 8217aa493c5Seric } 8227aa493c5Seric 823b35447dbSeric #ifdef SO_SNDBUF 824b35447dbSeric if (TcpSndBufferSize > 0) 825b35447dbSeric { 826b35447dbSeric if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, 827bf217a95Seric (char *) &TcpSndBufferSize, 828b35447dbSeric sizeof(TcpSndBufferSize)) < 0) 829b35447dbSeric syserr("makeconnection: setsockopt(SO_SNDBUF)"); 830b35447dbSeric } 831b35447dbSeric #endif 832b35447dbSeric 83361e4310fSeric if (tTd(16, 1)) 834b31e7f2bSeric printf("makeconnection: fd=%d\n", s); 8351b6e4a15Seric 8361b6e4a15Seric /* turn on network debugging? */ 837a2ef5fa4Seric if (tTd(16, 101)) 83852308a50Seric { 83952308a50Seric int on = 1; 8406173568dSeric (void) setsockopt(s, SOL_SOCKET, SO_DEBUG, 841aea02ca1Seric (char *)&on, sizeof on); 84252308a50Seric } 84387d6e633Srick if (CurEnv->e_xfp != NULL) 844877a6142Seric (void) fflush(CurEnv->e_xfp); /* for debugging */ 8454bd6a662Seric errno = 0; /* for debugging */ 846e2f2f828Seric if (connect(s, (struct sockaddr *) &addr, addrlen) >= 0) 847aea02ca1Seric break; 848aea02ca1Seric 8498b212fe0Seric /* if running demand-dialed connection, try again */ 8508b212fe0Seric if (DialDelay > 0 && firstconnect) 8518b212fe0Seric { 8528b212fe0Seric if (tTd(16, 1)) 8538b212fe0Seric printf("Connect failed (%s); trying again...\n", 8548b212fe0Seric errstring(sav_errno)); 8558b212fe0Seric firstconnect = FALSE; 8568b212fe0Seric sleep(DialDelay); 8578b212fe0Seric continue; 8588b212fe0Seric } 8598b212fe0Seric 860aea02ca1Seric /* couldn't connect.... figure out why */ 8616286bb75Sbloom sav_errno = errno; 8626286bb75Sbloom (void) close(s); 8638b212fe0Seric if (hp != NULL && hp->h_addr_list[i]) 86404344589Sbloom { 865aea02ca1Seric if (tTd(16, 1)) 866e2f2f828Seric printf("Connect failed (%s); trying new address....\n", 867e2f2f828Seric errstring(sav_errno)); 86883c1f4bcSeric switch (addr.sa.sa_family) 86983c1f4bcSeric { 87083c1f4bcSeric #ifdef NETINET 87183c1f4bcSeric case AF_INET: 872e2f2f828Seric bcopy(hp->h_addr_list[i++], 87383c1f4bcSeric &addr.sin.sin_addr, 8748b212fe0Seric INADDRSZ); 87583c1f4bcSeric break; 87683c1f4bcSeric #endif 87783c1f4bcSeric 87883c1f4bcSeric default: 879e2f2f828Seric bcopy(hp->h_addr_list[i++], 88083c1f4bcSeric addr.sa.sa_data, 881914346b1Seric hp->h_length); 88283c1f4bcSeric break; 88383c1f4bcSeric } 884aea02ca1Seric continue; 88504344589Sbloom } 88604344589Sbloom 8877aa493c5Seric /* failure, decide if temporary or not */ 8887aa493c5Seric failure: 889244b09d1Seric #ifdef XLA 890244b09d1Seric xla_host_end(host); 891244b09d1Seric #endif 892e2de2524Seric if (transienterror(sav_errno)) 893e2de2524Seric return EX_TEMPFAIL; 894e2de2524Seric else 89587d6e633Srick { 89608b25121Seric message("%s", errstring(sav_errno)); 8977aa493c5Seric return (EX_UNAVAILABLE); 8987aa493c5Seric } 8997aa493c5Seric } 9007aa493c5Seric 9017aa493c5Seric /* connection ok, put it into canonical form */ 902335eae58Seric if ((mci->mci_out = fdopen(s, "w")) == NULL || 903335eae58Seric (s = dup(s)) < 0 || 904ab81ee53Seric (mci->mci_in = fdopen(s, "r")) == NULL) 905335eae58Seric { 906335eae58Seric syserr("cannot open SMTP client channel, fd=%d", s); 907335eae58Seric return EX_TEMPFAIL; 908335eae58Seric } 9097aa493c5Seric 910dca8e1f7Seric return (EX_OK); 9117aa493c5Seric } 912444eaf03Seric /* 913444eaf03Seric ** MYHOSTNAME -- return the name of this host. 914444eaf03Seric ** 915444eaf03Seric ** Parameters: 916444eaf03Seric ** hostbuf -- a place to return the name of this host. 917897f1869Seric ** size -- the size of hostbuf. 918444eaf03Seric ** 919444eaf03Seric ** Returns: 920444eaf03Seric ** A list of aliases for this host. 921444eaf03Seric ** 922444eaf03Seric ** Side Effects: 923d8d0a4aeSeric ** Adds numeric codes to $=w. 924444eaf03Seric */ 925444eaf03Seric 9268b212fe0Seric struct hostent * 927897f1869Seric myhostname(hostbuf, size) 928444eaf03Seric char hostbuf[]; 929897f1869Seric int size; 930444eaf03Seric { 93138ad259dSeric register struct hostent *hp; 9328b212fe0Seric extern bool getcanonname(); 9338b212fe0Seric extern int h_errno; 934444eaf03Seric 935af5e902cSeric if (gethostname(hostbuf, size) < 0) 936af5e902cSeric { 937af5e902cSeric (void) strcpy(hostbuf, "localhost"); 938af5e902cSeric } 9398b212fe0Seric hp = sm_gethostbyname(hostbuf); 9404a5c6430Seric if (hp == NULL) 9418b212fe0Seric return NULL; 9428b212fe0Seric if (strchr(hp->h_name, '.') != NULL || strchr(hostbuf, '.') == NULL) 943423161fbSeric { 94435852b23Seric (void) strncpy(hostbuf, hp->h_name, size - 1); 94535852b23Seric hostbuf[size - 1] = '\0'; 9468b212fe0Seric } 9474a5c6430Seric 9484a5c6430Seric #if NAMED_BIND 9498b212fe0Seric /* 9508b212fe0Seric ** If still no dot, try DNS directly (i.e., avoid NIS problems). 9518b212fe0Seric ** This ought to be driven from the configuration file, but 9528b212fe0Seric ** we are called before the configuration is read. We could 9538b212fe0Seric ** check for an /etc/resolv.conf file, but that isn't required. 9548b212fe0Seric ** All in all, a bit of a mess. 9558b212fe0Seric */ 95623668637Seric 9578b212fe0Seric if (strchr(hostbuf, '.') == NULL && 9588b212fe0Seric !getcanonname(hostbuf, size, TRUE) && 9598b212fe0Seric h_errno == TRY_AGAIN) 96023668637Seric { 9618b212fe0Seric /* try twice in case name server not yet started up */ 9628b212fe0Seric message("My unqualifed host name (%s) unknown to DNS; sleeping for retry", 96323668637Seric hostbuf); 9648b212fe0Seric sleep(60); 9658b212fe0Seric if (!getcanonname(hostbuf, size, TRUE)) 9668b212fe0Seric errno = h_errno + E_DNSBASE; 967747df804Seric } 968747df804Seric #endif 9698b212fe0Seric return (hp); 9707364df9fSeric } 971cb452edcSeric /* 9729f8b0eadSeric ** GETAUTHINFO -- get the real host name asociated with a file descriptor 9739f8b0eadSeric ** 9749f8b0eadSeric ** Uses RFC1413 protocol to try to get info from the other end. 975320e0d1cSeric ** 976320e0d1cSeric ** Parameters: 977320e0d1cSeric ** fd -- the descriptor 978320e0d1cSeric ** 979320e0d1cSeric ** Returns: 9809f8b0eadSeric ** The user@host information associated with this descriptor. 981320e0d1cSeric */ 982320e0d1cSeric 9839f8b0eadSeric static jmp_buf CtxAuthTimeout; 9849f8b0eadSeric 9858b212fe0Seric static void 9869f8b0eadSeric authtimeout() 9879f8b0eadSeric { 9889f8b0eadSeric longjmp(CtxAuthTimeout, 1); 9899f8b0eadSeric } 9909f8b0eadSeric 991320e0d1cSeric char * 9929f8b0eadSeric getauthinfo(fd) 993320e0d1cSeric int fd; 994320e0d1cSeric { 9959f8b0eadSeric int falen; 996a5546e24Seric register char *p; 9979f8b0eadSeric SOCKADDR la; 9989f8b0eadSeric int lalen; 9999f8b0eadSeric register struct servent *sp; 10009f8b0eadSeric int s; 10019f8b0eadSeric int i; 10029f8b0eadSeric EVENT *ev; 1003579270a3Seric int nleft; 1004f036c8d7Seric char ibuf[MAXNAME + 1]; 10059f8b0eadSeric static char hbuf[MAXNAME * 2 + 2]; 10069f8b0eadSeric extern char *hostnamebyanyaddr(); 10079f8b0eadSeric extern char RealUserName[]; /* main.c */ 1008320e0d1cSeric 1009e29a76d1Seric falen = sizeof RealHostAddr; 10108b212fe0Seric if (isatty(fd) || getpeername(fd, &RealHostAddr.sa, &falen) < 0 || 10118b212fe0Seric falen <= 0 || RealHostAddr.sa.sa_family == 0) 10129f8b0eadSeric { 10139f8b0eadSeric (void) sprintf(hbuf, "%s@localhost", RealUserName); 101453853673Seric if (tTd(9, 1)) 10159f8b0eadSeric printf("getauthinfo: %s\n", hbuf); 1016320e0d1cSeric return hbuf; 1017320e0d1cSeric } 10189f8b0eadSeric 1019e29a76d1Seric if (RealHostName == NULL) 1020e29a76d1Seric { 1021e29a76d1Seric /* translate that to a host name */ 1022e29a76d1Seric RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr)); 1023e29a76d1Seric } 1024e29a76d1Seric 102593b3215bSeric if (TimeOuts.to_ident == 0) 102693b3215bSeric goto noident; 102793b3215bSeric 10289f8b0eadSeric lalen = sizeof la; 1029e29a76d1Seric if (RealHostAddr.sa.sa_family != AF_INET || 10309f8b0eadSeric getsockname(fd, &la.sa, &lalen) < 0 || lalen <= 0 || 10319f8b0eadSeric la.sa.sa_family != AF_INET) 10329f8b0eadSeric { 10339f8b0eadSeric /* no ident info */ 10349f8b0eadSeric goto noident; 10359f8b0eadSeric } 10369f8b0eadSeric 10379f8b0eadSeric /* create ident query */ 103881d2944fSeric (void) sprintf(ibuf, "%d,%d\r\n", 1039e29a76d1Seric ntohs(RealHostAddr.sin.sin_port), ntohs(la.sin.sin_port)); 10409f8b0eadSeric 10419f8b0eadSeric /* create local address */ 1042d6af7dadSeric la.sin.sin_port = 0; 10439f8b0eadSeric 10449f8b0eadSeric /* create foreign address */ 10459f8b0eadSeric sp = getservbyname("auth", "tcp"); 10469f8b0eadSeric if (sp != NULL) 1047e29a76d1Seric RealHostAddr.sin.sin_port = sp->s_port; 10489f8b0eadSeric else 1049e29a76d1Seric RealHostAddr.sin.sin_port = htons(113); 10509f8b0eadSeric 10519f8b0eadSeric s = -1; 10529f8b0eadSeric if (setjmp(CtxAuthTimeout) != 0) 10539f8b0eadSeric { 10549f8b0eadSeric if (s >= 0) 10559f8b0eadSeric (void) close(s); 10569f8b0eadSeric goto noident; 10579f8b0eadSeric } 10589f8b0eadSeric 10599f8b0eadSeric /* put a timeout around the whole thing */ 1060a0f780efSeric ev = setevent(TimeOuts.to_ident, authtimeout, 0); 10619f8b0eadSeric 1062d6af7dadSeric /* connect to foreign IDENT server using same address as SMTP socket */ 10639f8b0eadSeric s = socket(AF_INET, SOCK_STREAM, 0); 10649f8b0eadSeric if (s < 0) 10659f8b0eadSeric { 10669f8b0eadSeric clrevent(ev); 10679f8b0eadSeric goto noident; 10689f8b0eadSeric } 1069d6af7dadSeric if (bind(s, &la.sa, sizeof la.sin) < 0 || 1070e29a76d1Seric connect(s, &RealHostAddr.sa, sizeof RealHostAddr.sin) < 0) 10719f8b0eadSeric { 10727c201575Seric goto closeident; 10739f8b0eadSeric } 10749f8b0eadSeric 107553853673Seric if (tTd(9, 10)) 107681d2944fSeric printf("getauthinfo: sent %s", ibuf); 10779f8b0eadSeric 10789f8b0eadSeric /* send query */ 107981d2944fSeric if (write(s, ibuf, strlen(ibuf)) < 0) 10809f8b0eadSeric goto closeident; 10819f8b0eadSeric 10829f8b0eadSeric /* get result */ 108381d2944fSeric p = &ibuf[0]; 1084b26156f6Seric nleft = sizeof ibuf - 1; 1085579270a3Seric while ((i = read(s, p, nleft)) > 0) 1086579270a3Seric { 1087579270a3Seric p += i; 1088579270a3Seric nleft -= i; 1089579270a3Seric } 10909f8b0eadSeric (void) close(s); 10919f8b0eadSeric clrevent(ev); 109281d2944fSeric if (i < 0 || p == &ibuf[0]) 10939f8b0eadSeric goto noident; 1094579270a3Seric 1095579270a3Seric if (*--p == '\n' && *--p == '\r') 1096579270a3Seric p--; 1097579270a3Seric *++p = '\0'; 10989f8b0eadSeric 109953853673Seric if (tTd(9, 3)) 110081d2944fSeric printf("getauthinfo: got %s\n", ibuf); 11019f8b0eadSeric 11029f8b0eadSeric /* parse result */ 110381d2944fSeric p = strchr(ibuf, ':'); 11049f8b0eadSeric if (p == NULL) 11059f8b0eadSeric { 11069f8b0eadSeric /* malformed response */ 11079f8b0eadSeric goto noident; 11089f8b0eadSeric } 11099f8b0eadSeric while (isascii(*++p) && isspace(*p)) 11109f8b0eadSeric continue; 11119f8b0eadSeric if (strncasecmp(p, "userid", 6) != 0) 11129f8b0eadSeric { 11139f8b0eadSeric /* presumably an error string */ 11149f8b0eadSeric goto noident; 11159f8b0eadSeric } 11169f8b0eadSeric p += 6; 11179f8b0eadSeric while (isascii(*p) && isspace(*p)) 11189f8b0eadSeric p++; 11199f8b0eadSeric if (*p++ != ':') 11209f8b0eadSeric { 11219f8b0eadSeric /* either useridxx or malformed response */ 11229f8b0eadSeric goto noident; 11239f8b0eadSeric } 11249f8b0eadSeric 11259f8b0eadSeric /* p now points to the OSTYPE field */ 11268b212fe0Seric while (isascii(*p) && isspace(*p)) 11278b212fe0Seric p++; 11288b212fe0Seric if (strncasecmp(p, "other", 5) == 0 && 11298b212fe0Seric (p[5] == ':' || p[5] == ' ' || p[5] == ',' || p[5] == '\0')) 11308b212fe0Seric { 11318b212fe0Seric /* not useful information */ 11328b212fe0Seric goto noident; 11338b212fe0Seric } 11349f8b0eadSeric p = strchr(p, ':'); 11359f8b0eadSeric if (p == NULL) 11369f8b0eadSeric { 11379f8b0eadSeric /* malformed response */ 11389f8b0eadSeric goto noident; 11399f8b0eadSeric } 114053853673Seric 114153853673Seric /* 1413 says don't do this -- but it's broken otherwise */ 114253853673Seric while (isascii(*++p) && isspace(*p)) 114353853673Seric continue; 11449f8b0eadSeric 1145a7763879Seric /* p now points to the authenticated name -- copy carefully */ 114681d2944fSeric cleanstrcpy(hbuf, p, MAXNAME); 114793433f31Seric i = strlen(hbuf); 1148a7763879Seric hbuf[i++] = '@'; 1149a7763879Seric strcpy(&hbuf[i], RealHostName == NULL ? "localhost" : RealHostName); 115053853673Seric goto finish; 115153853673Seric 11527c201575Seric closeident: 11537c201575Seric (void) close(s); 11547c201575Seric clrevent(ev); 11557c201575Seric 115653853673Seric noident: 1157f7869e68Seric if (RealHostName == NULL) 1158f7869e68Seric { 1159f7869e68Seric if (tTd(9, 1)) 1160f7869e68Seric printf("getauthinfo: NULL\n"); 1161f7869e68Seric return NULL; 1162f7869e68Seric } 116353853673Seric (void) strcpy(hbuf, RealHostName); 116453853673Seric 116553853673Seric finish: 1166f7869e68Seric if (RealHostName != NULL && RealHostName[0] != '[') 11679f8b0eadSeric { 11689f8b0eadSeric p = &hbuf[strlen(hbuf)]; 11699f8b0eadSeric (void) sprintf(p, " [%s]", anynet_ntoa(&RealHostAddr)); 11709f8b0eadSeric } 117153853673Seric if (tTd(9, 1)) 11729f8b0eadSeric printf("getauthinfo: %s\n", hbuf); 11739f8b0eadSeric return hbuf; 11749f8b0eadSeric } 1175320e0d1cSeric /* 117608de856eSeric ** HOST_MAP_LOOKUP -- turn a hostname into canonical form 117715d084d5Seric ** 117815d084d5Seric ** Parameters: 117905b57da8Seric ** map -- a pointer to this map (unused). 118008de856eSeric ** name -- the (presumably unqualified) hostname. 118100b385a9Seric ** av -- unused -- for compatibility with other mapping 1182d798a1deSeric ** functions. 11832d29d43aSeric ** statp -- an exit status (out parameter) -- set to 11842d29d43aSeric ** EX_TEMPFAIL if the name server is unavailable. 118515d084d5Seric ** 118615d084d5Seric ** Returns: 118715d084d5Seric ** The mapping, if found. 118815d084d5Seric ** NULL if no mapping found. 118915d084d5Seric ** 119015d084d5Seric ** Side Effects: 119115d084d5Seric ** Looks up the host specified in hbuf. If it is not 119215d084d5Seric ** the canonical name for that host, return the canonical 119315d084d5Seric ** name. 1194f36ede03Sbostic */ 1195cb452edcSeric 119615d084d5Seric char * 119700b385a9Seric host_map_lookup(map, name, av, statp) 119805b57da8Seric MAP *map; 119908de856eSeric char *name; 120000b385a9Seric char **av; 12012d29d43aSeric int *statp; 120299f7cf32Seric { 120399f7cf32Seric register struct hostent *hp; 12048b212fe0Seric struct in_addr in_addr; 120505b57da8Seric char *cp; 1206eea91d78Seric register STAB *s; 12078b212fe0Seric char hbuf[MAXNAME + 1]; 12089d4a8008Seric #if NAMED_BIND 1209eea91d78Seric extern int h_errno; 1210c304a798Seric #endif 12115f78836eSmiriam 1212f36ede03Sbostic /* 1213eea91d78Seric ** See if we have already looked up this name. If so, just 1214eea91d78Seric ** return it. 1215eea91d78Seric */ 1216eea91d78Seric 121708de856eSeric s = stab(name, ST_NAMECANON, ST_ENTER); 1218eea91d78Seric if (bitset(NCF_VALID, s->s_namecanon.nc_flags)) 1219eea91d78Seric { 1220f92c3297Seric if (tTd(9, 1)) 122108de856eSeric printf("host_map_lookup(%s) => CACHE %s\n", 122208de856eSeric name, s->s_namecanon.nc_cname); 1223eea91d78Seric errno = s->s_namecanon.nc_errno; 12249d4a8008Seric #if NAMED_BIND 1225eea91d78Seric h_errno = s->s_namecanon.nc_herrno; 1226c304a798Seric #endif 1227eea91d78Seric *statp = s->s_namecanon.nc_stat; 1228fcfb36d9Seric if (*statp == EX_TEMPFAIL) 1229ed63aae0Seric { 12305b068d51Seric CurEnv->e_status = "4.4.3"; 1231fcfb36d9Seric usrerr("451 %s: Name server timeout", 1232ed63aae0Seric shortenstring(name, 33)); 1233ed63aae0Seric } 1234eea91d78Seric return s->s_namecanon.nc_cname; 1235eea91d78Seric } 1236eea91d78Seric 1237eea91d78Seric /* 1238eea91d78Seric ** If first character is a bracket, then it is an address 1239eea91d78Seric ** lookup. Address is copied into a temporary buffer to 124008de856eSeric ** strip the brackets and to preserve name if address is 1241eea91d78Seric ** unknown. 1242f36ede03Sbostic */ 124315d084d5Seric 124408de856eSeric if (*name != '[') 124515d084d5Seric { 1246d798a1deSeric extern bool getcanonname(); 1247d798a1deSeric 12488cb4653dSeric if (tTd(9, 1)) 124908de856eSeric printf("host_map_lookup(%s) => ", name); 1250eea91d78Seric s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ 12518b212fe0Seric if (strlen(name) < sizeof hbuf) 125208de856eSeric (void) strcpy(hbuf, name); 12538b212fe0Seric else 12548b212fe0Seric { 12558b212fe0Seric bcopy(name, hbuf, sizeof hbuf - 1); 12568b212fe0Seric hbuf[sizeof hbuf - 1] = '\0'; 12578b212fe0Seric } 12580183c3f6Seric if (getcanonname(hbuf, sizeof hbuf - 1, !NoMXforCanon)) 12599040ec4fSeric { 12609040ec4fSeric if (tTd(9, 1)) 12619040ec4fSeric printf("%s\n", hbuf); 126200b385a9Seric cp = map_rewrite(map, hbuf, strlen(hbuf), av); 126300b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 126400b385a9Seric return cp; 12659040ec4fSeric } 126615d084d5Seric else 12679040ec4fSeric { 12682d29d43aSeric register struct hostent *hp; 12692d29d43aSeric 1270c304a798Seric s->s_namecanon.nc_errno = errno; 12719d4a8008Seric #if NAMED_BIND 1272c304a798Seric s->s_namecanon.nc_herrno = h_errno; 12739040ec4fSeric if (tTd(9, 1)) 12742d29d43aSeric printf("FAIL (%d)\n", h_errno); 12752d29d43aSeric switch (h_errno) 12762d29d43aSeric { 12772d29d43aSeric case TRY_AGAIN: 127889cb2793Seric if (UseNameServer) 12798820d51bSeric { 12805b068d51Seric CurEnv->e_status = "4.4.3"; 1281fcfb36d9Seric usrerr("451 %s: Name server timeout", 1282ed63aae0Seric shortenstring(name, 33)); 12838820d51bSeric } 12842d29d43aSeric *statp = EX_TEMPFAIL; 12852d29d43aSeric break; 12862d29d43aSeric 12872d29d43aSeric case HOST_NOT_FOUND: 128880027ae6Seric case NO_DATA: 12892d29d43aSeric *statp = EX_NOHOST; 12902d29d43aSeric break; 12912d29d43aSeric 12922d29d43aSeric case NO_RECOVERY: 12932d29d43aSeric *statp = EX_SOFTWARE; 12942d29d43aSeric break; 12952d29d43aSeric 12962d29d43aSeric default: 12972d29d43aSeric *statp = EX_UNAVAILABLE; 12982d29d43aSeric break; 12992d29d43aSeric } 1300c304a798Seric #else 1301c304a798Seric if (tTd(9, 1)) 1302c304a798Seric printf("FAIL\n"); 1303c304a798Seric *statp = EX_NOHOST; 1304c304a798Seric #endif 1305eea91d78Seric s->s_namecanon.nc_stat = *statp; 13068b212fe0Seric if ((*statp != EX_TEMPFAIL && *statp != EX_NOHOST) || 13078b212fe0Seric UseNameServer) 130815d084d5Seric return NULL; 13092d29d43aSeric 13102d29d43aSeric /* 13112d29d43aSeric ** Try to look it up in /etc/hosts 13122d29d43aSeric */ 13132d29d43aSeric 13148b212fe0Seric hp = sm_gethostbyname(name); 13152d29d43aSeric if (hp == NULL) 13162d29d43aSeric { 13172d29d43aSeric /* no dice there either */ 1318eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_NOHOST; 13192d29d43aSeric return NULL; 13202d29d43aSeric } 13212d29d43aSeric 1322eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_OK; 132300b385a9Seric cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); 132400b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 132500b385a9Seric return cp; 132615d084d5Seric } 13279040ec4fSeric } 132808de856eSeric if ((cp = strchr(name, ']')) == NULL) 132915d084d5Seric return (NULL); 133034e39927Sbostic *cp = '\0'; 13318b212fe0Seric in_addr.s_addr = inet_addr(&name[1]); 133238ad259dSeric 133338ad259dSeric /* nope -- ask the name server */ 13348b212fe0Seric hp = sm_gethostbyaddr((char *)&in_addr, INADDRSZ, AF_INET); 1335eea91d78Seric s->s_namecanon.nc_errno = errno; 13369d4a8008Seric #if NAMED_BIND 1337eea91d78Seric s->s_namecanon.nc_herrno = h_errno; 1338c304a798Seric #endif 1339eea91d78Seric s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ 13405f78836eSmiriam if (hp == NULL) 1341eea91d78Seric { 1342eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_NOHOST; 134315d084d5Seric return (NULL); 1344eea91d78Seric } 134515d084d5Seric 134638ad259dSeric /* found a match -- copy out */ 134700b385a9Seric cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); 1348eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_OK; 134900b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 135000b385a9Seric return cp; 135199f7cf32Seric } 1352e2f2f828Seric /* 1353e2f2f828Seric ** ANYNET_NTOA -- convert a network address to printable form. 1354e2f2f828Seric ** 1355e2f2f828Seric ** Parameters: 1356e2f2f828Seric ** sap -- a pointer to a sockaddr structure. 1357e2f2f828Seric ** 1358e2f2f828Seric ** Returns: 1359e2f2f828Seric ** A printable version of that sockaddr. 1360e2f2f828Seric */ 1361e2f2f828Seric 1362e2f2f828Seric char * 1363e2f2f828Seric anynet_ntoa(sap) 1364e2f2f828Seric register SOCKADDR *sap; 1365e2f2f828Seric { 1366e2f2f828Seric register char *bp; 1367e2f2f828Seric register char *ap; 1368e2f2f828Seric int l; 1369e387851eSeric static char buf[100]; 1370e2f2f828Seric 13718cb4653dSeric /* check for null/zero family */ 13728cb4653dSeric if (sap == NULL) 13738cb4653dSeric return "NULLADDR"; 13748cb4653dSeric if (sap->sa.sa_family == 0) 13758cb4653dSeric return "0"; 13768cb4653dSeric 1377e387851eSeric switch (sap->sa.sa_family) 1378e387851eSeric { 1379139b52c8Seric #ifdef NETUNIX 1380e387851eSeric case AF_UNIX: 1381c24cf5a4Seric if (sap->sunix.sun_path[0] != '\0') 1382c24cf5a4Seric sprintf(buf, "[UNIX: %.64s]", sap->sunix.sun_path); 1383e387851eSeric else 1384e387851eSeric sprintf(buf, "[UNIX: localhost]"); 1385e387851eSeric return buf; 1386e387851eSeric #endif 1387e387851eSeric 138883c1f4bcSeric #ifdef NETINET 1389e387851eSeric case AF_INET: 1390482e28bcSeric return inet_ntoa(sap->sin.sin_addr); 139183c1f4bcSeric #endif 1392e2f2f828Seric 1393e387851eSeric default: 1394e387851eSeric /* this case is only to ensure syntactic correctness */ 1395e387851eSeric break; 1396e387851eSeric } 1397e387851eSeric 1398e2f2f828Seric /* unknown family -- just dump bytes */ 139983c1f4bcSeric (void) sprintf(buf, "Family %d: ", sap->sa.sa_family); 1400e2f2f828Seric bp = &buf[strlen(buf)]; 140183c1f4bcSeric ap = sap->sa.sa_data; 140283c1f4bcSeric for (l = sizeof sap->sa.sa_data; --l >= 0; ) 1403e2f2f828Seric { 1404e2f2f828Seric (void) sprintf(bp, "%02x:", *ap++ & 0377); 1405e2f2f828Seric bp += 3; 1406e2f2f828Seric } 1407e2f2f828Seric *--bp = '\0'; 1408e2f2f828Seric return buf; 1409e2f2f828Seric } 14109f8b0eadSeric /* 14119f8b0eadSeric ** HOSTNAMEBYANYADDR -- return name of host based on address 14129f8b0eadSeric ** 14139f8b0eadSeric ** Parameters: 14149f8b0eadSeric ** sap -- SOCKADDR pointer 14159f8b0eadSeric ** 14169f8b0eadSeric ** Returns: 14179f8b0eadSeric ** text representation of host name. 14189f8b0eadSeric ** 14199f8b0eadSeric ** Side Effects: 14209f8b0eadSeric ** none. 14219f8b0eadSeric */ 14229f8b0eadSeric 14239f8b0eadSeric char * 14249f8b0eadSeric hostnamebyanyaddr(sap) 14259f8b0eadSeric register SOCKADDR *sap; 14269f8b0eadSeric { 14279f8b0eadSeric register struct hostent *hp; 14283490b9dfSeric int saveretry; 14293490b9dfSeric 14309d4a8008Seric #if NAMED_BIND 14313490b9dfSeric /* shorten name server timeout to avoid higher level timeouts */ 14323490b9dfSeric saveretry = _res.retry; 14333490b9dfSeric _res.retry = 3; 14343490b9dfSeric #endif /* NAMED_BIND */ 14353490b9dfSeric 14369f8b0eadSeric switch (sap->sa.sa_family) 14379f8b0eadSeric { 14389f8b0eadSeric #ifdef NETINET 14399f8b0eadSeric case AF_INET: 14408b212fe0Seric hp = sm_gethostbyaddr((char *) &sap->sin.sin_addr, 14418b212fe0Seric INADDRSZ, 14429f8b0eadSeric AF_INET); 14439f8b0eadSeric break; 14449f8b0eadSeric #endif 14459f8b0eadSeric 14469f8b0eadSeric #ifdef NETISO 14479f8b0eadSeric case AF_ISO: 14488b212fe0Seric hp = sm_gethostbyaddr((char *) &sap->siso.siso_addr, 14499f8b0eadSeric sizeof sap->siso.siso_addr, 14509f8b0eadSeric AF_ISO); 14519f8b0eadSeric break; 14529f8b0eadSeric #endif 14539f8b0eadSeric 1454e387851eSeric case AF_UNIX: 1455e387851eSeric hp = NULL; 1456e387851eSeric break; 1457e387851eSeric 14589f8b0eadSeric default: 14598b212fe0Seric hp = sm_gethostbyaddr(sap->sa.sa_data, 14609f8b0eadSeric sizeof sap->sa.sa_data, 14619f8b0eadSeric sap->sa.sa_family); 14629f8b0eadSeric break; 14639f8b0eadSeric } 14649f8b0eadSeric 14659d4a8008Seric #if NAMED_BIND 14663490b9dfSeric _res.retry = saveretry; 14673490b9dfSeric #endif /* NAMED_BIND */ 14683490b9dfSeric 14699f8b0eadSeric if (hp != NULL) 14709f8b0eadSeric return hp->h_name; 14719f8b0eadSeric else 14729f8b0eadSeric { 14739f8b0eadSeric /* produce a dotted quad */ 14749f8b0eadSeric static char buf[512]; 14759f8b0eadSeric 14769f8b0eadSeric (void) sprintf(buf, "[%s]", anynet_ntoa(sap)); 14779f8b0eadSeric return buf; 14789f8b0eadSeric } 14799f8b0eadSeric } 1480f36ede03Sbostic 14816c2c3107Seric # else /* DAEMON */ 148299f7cf32Seric /* code for systems without sophisticated networking */ 1483444eaf03Seric 1484444eaf03Seric /* 1485444eaf03Seric ** MYHOSTNAME -- stub version for case of no daemon code. 148621e9914dSeric ** 148721e9914dSeric ** Can't convert to upper case here because might be a UUCP name. 1488897f1869Seric ** 1489897f1869Seric ** Mark, you can change this to be anything you want...... 1490444eaf03Seric */ 1491444eaf03Seric 1492444eaf03Seric char ** 1493897f1869Seric myhostname(hostbuf, size) 1494444eaf03Seric char hostbuf[]; 1495897f1869Seric int size; 1496444eaf03Seric { 1497444eaf03Seric register FILE *f; 1498444eaf03Seric 1499444eaf03Seric hostbuf[0] = '\0'; 1500444eaf03Seric f = fopen("/usr/include/whoami", "r"); 1501444eaf03Seric if (f != NULL) 1502444eaf03Seric { 1503897f1869Seric (void) fgets(hostbuf, size, f); 1504444eaf03Seric fixcrlf(hostbuf, TRUE); 1505444eaf03Seric (void) fclose(f); 1506444eaf03Seric } 1507444eaf03Seric return (NULL); 1508444eaf03Seric } 150999f7cf32Seric /* 15109f8b0eadSeric ** GETAUTHINFO -- get the real host name asociated with a file descriptor 1511320e0d1cSeric ** 1512320e0d1cSeric ** Parameters: 1513320e0d1cSeric ** fd -- the descriptor 1514320e0d1cSeric ** 1515320e0d1cSeric ** Returns: 1516320e0d1cSeric ** The host name associated with this descriptor, if it can 1517320e0d1cSeric ** be determined. 1518320e0d1cSeric ** NULL otherwise. 1519320e0d1cSeric ** 1520320e0d1cSeric ** Side Effects: 1521320e0d1cSeric ** none 1522320e0d1cSeric */ 1523320e0d1cSeric 1524320e0d1cSeric char * 15259f8b0eadSeric getauthinfo(fd) 1526320e0d1cSeric int fd; 1527320e0d1cSeric { 1528320e0d1cSeric return NULL; 1529320e0d1cSeric } 1530320e0d1cSeric /* 153199f7cf32Seric ** MAPHOSTNAME -- turn a hostname into canonical form 153299f7cf32Seric ** 153399f7cf32Seric ** Parameters: 153405b57da8Seric ** map -- a pointer to the database map. 153508de856eSeric ** name -- a buffer containing a hostname. 153615d084d5Seric ** avp -- a pointer to a (cf file defined) argument vector. 15372d29d43aSeric ** statp -- an exit status (out parameter). 153899f7cf32Seric ** 153999f7cf32Seric ** Returns: 154015d084d5Seric ** mapped host name 1541cb452edcSeric ** FALSE otherwise. 154299f7cf32Seric ** 154399f7cf32Seric ** Side Effects: 154408de856eSeric ** Looks up the host specified in name. If it is not 154599f7cf32Seric ** the canonical name for that host, replace it with 154699f7cf32Seric ** the canonical name. If the name is unknown, or it 154799f7cf32Seric ** is already the canonical name, leave it unchanged. 154899f7cf32Seric */ 154999f7cf32Seric 155099f7cf32Seric /*ARGSUSED*/ 155115d084d5Seric char * 155208de856eSeric host_map_lookup(map, name, avp, statp) 155305b57da8Seric MAP *map; 155408de856eSeric char *name; 155515d084d5Seric char **avp; 15562d29d43aSeric char *statp; 155799f7cf32Seric { 15582d29d43aSeric register struct hostent *hp; 15592d29d43aSeric 15608b212fe0Seric hp = sm_gethostbyname(name); 15612d29d43aSeric if (hp != NULL) 15622d29d43aSeric return hp->h_name; 15632d29d43aSeric *statp = EX_NOHOST; 156415d084d5Seric return NULL; 156599f7cf32Seric } 156699f7cf32Seric 15676c2c3107Seric #endif /* DAEMON */ 1568