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*5db00695Seric static char sccsid[] = "@(#)daemon.c 8.93 (Berkeley) 05/27/95 (with daemon mode)"; 15d0a9e852Seric #else 16*5db00695Seric static char sccsid[] = "@(#)daemon.c 8.93 (Berkeley) 05/27/95 (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 2811af795cSeric #if IP_SRCROUTE 2911af795cSeric # include <netinet/in_systm.h> 3011af795cSeric # include <netinet/ip.h> 3111af795cSeric # include <netinet/ip_var.h> 3211af795cSeric #endif 3311af795cSeric 347fa39d90Seric /* 357fa39d90Seric ** DAEMON.C -- routines to use when running as a daemon. 3647b12ae1Seric ** 3747b12ae1Seric ** This entire file is highly dependent on the 4.2 BSD 3847b12ae1Seric ** interprocess communication primitives. No attempt has 3947b12ae1Seric ** been made to make this file portable to Version 7, 4047b12ae1Seric ** Version 6, MPX files, etc. If you should try such a 4147b12ae1Seric ** thing yourself, I recommend chucking the entire file 4247b12ae1Seric ** and starting from scratch. Basic semantics are: 4347b12ae1Seric ** 4447b12ae1Seric ** getrequests() 4547b12ae1Seric ** Opens a port and initiates a connection. 4647b12ae1Seric ** Returns in a child. Must set InChannel and 4747b12ae1Seric ** OutChannel appropriately. 48b7d7afcbSeric ** clrdaemon() 49b7d7afcbSeric ** Close any open files associated with getting 50b7d7afcbSeric ** the connection; this is used when running the queue, 51b7d7afcbSeric ** etc., to avoid having extra file descriptors during 52b7d7afcbSeric ** the queue run and to avoid confusing the network 53b7d7afcbSeric ** code (if it cares). 54914346b1Seric ** makeconnection(host, port, outfile, infile, usesecureport) 5547b12ae1Seric ** Make a connection to the named host on the given 5647b12ae1Seric ** port. Set *outfile and *infile to the files 5747b12ae1Seric ** appropriate for communication. Returns zero on 5847b12ae1Seric ** success, else an exit status describing the 5947b12ae1Seric ** error. 6008de856eSeric ** host_map_lookup(map, hbuf, avp, pstat) 6105b57da8Seric ** Convert the entry in hbuf into a canonical form. 627fa39d90Seric */ 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 */ 84b35447dbSeric int TcpRcvBufferSize = 0; /* size of TCP receive buffer */ 85b35447dbSeric int TcpSndBufferSize = 0; /* size of TCP send buffer */ 861c71e510Seric 878b212fe0Seric void 887fa39d90Seric getrequests() 897fa39d90Seric { 901c71e510Seric int t; 9115d084d5Seric bool refusingconnections = TRUE; 920aae1086Seric FILE *pidf; 93dadb8687Seric int socksize; 94dfe840b2Seric #ifdef XDEBUG 95dfe840b2Seric bool j_has_dot; 96dfe840b2Seric #endif 979b100374Sbostic extern void reapchild(); 98eb889047Seric 99a8268164Seric /* 1001c71e510Seric ** Set up the address for the mailer. 101eb889047Seric */ 102eb889047Seric 103bfb80540Seric if (DaemonAddr.sin.sin_family == 0) 104bfb80540Seric DaemonAddr.sin.sin_family = AF_INET; 105bfb80540Seric if (DaemonAddr.sin.sin_addr.s_addr == 0) 106bfb80540Seric DaemonAddr.sin.sin_addr.s_addr = INADDR_ANY; 107bfb80540Seric if (DaemonAddr.sin.sin_port == 0) 108bfb80540Seric { 109e5311662Seric register struct servent *sp; 110e5311662Seric 1111c71e510Seric sp = getservbyname("smtp", "tcp"); 1121c71e510Seric if (sp == NULL) 113d0a9e852Seric { 114ad977999Seric syserr("554 service \"smtp\" unknown"); 115e5311662Seric DaemonAddr.sin.sin_port = htons(25); 1161c71e510Seric } 117e5311662Seric else 118bfb80540Seric DaemonAddr.sin.sin_port = sp->s_port; 119bfb80540Seric } 1201c71e510Seric 1211c71e510Seric /* 1221c71e510Seric ** Try to actually open the connection. 1231c71e510Seric */ 1241c71e510Seric 1251c71e510Seric if (tTd(15, 1)) 126bfb80540Seric printf("getrequests: port 0x%x\n", DaemonAddr.sin.sin_port); 1271c71e510Seric 1281c71e510Seric /* get a socket for the SMTP connection */ 12988ea5609Seric socksize = opendaemonsocket(TRUE); 1301c71e510Seric 1312b9178d3Seric (void) setsignal(SIGCHLD, reapchild); 13252308a50Seric 1330aae1086Seric /* write the pid to the log file for posterity */ 1340aae1086Seric pidf = fopen(PidFile, "w"); 1350aae1086Seric if (pidf != NULL) 1360aae1086Seric { 13737950f67Seric extern char *CommandLineArgs; 13837950f67Seric 13937950f67Seric /* write the process id on line 1 */ 1400aae1086Seric fprintf(pidf, "%d\n", getpid()); 14137950f67Seric 14237950f67Seric /* line 2 contains all command line flags */ 14337950f67Seric fprintf(pidf, "%s\n", CommandLineArgs); 14437950f67Seric 14537950f67Seric /* flush and close */ 1460aae1086Seric fclose(pidf); 1470aae1086Seric } 1480aae1086Seric 149dfe840b2Seric #ifdef XDEBUG 150dfe840b2Seric { 15135852b23Seric char jbuf[MAXHOSTNAMELEN]; 152dfe840b2Seric 1538b212fe0Seric expand("\201j", jbuf, sizeof jbuf, CurEnv); 15435852b23Seric j_has_dot = strchr(jbuf, '.') != NULL; 155dfe840b2Seric } 156dfe840b2Seric #endif 1570aae1086Seric 1581c71e510Seric if (tTd(15, 1)) 159b7d7afcbSeric printf("getrequests: %d\n", DaemonSocket); 1601c71e510Seric 1611c71e510Seric for (;;) 1621c71e510Seric { 1633a099713Seric register int pid; 164a44d5a5eSeric auto int lotherend; 16515d084d5Seric extern bool refuseconnections(); 1668b212fe0Seric extern int getla(); 1673a099713Seric 1683a099713Seric /* see if we are rejecting connections */ 16915d084d5Seric CurrentLA = getla(); 17015d084d5Seric if (refuseconnections()) 1716775ec03Sbostic { 1720084e6f6Seric if (DaemonSocket >= 0) 17315d084d5Seric { 1740084e6f6Seric /* close socket so peer will fail quickly */ 1750084e6f6Seric (void) close(DaemonSocket); 1760084e6f6Seric DaemonSocket = -1; 17715d084d5Seric } 1780084e6f6Seric refusingconnections = TRUE; 17971e5e267Seric setproctitle("rejecting connections: load average: %d", 18071e5e267Seric CurrentLA); 1810084e6f6Seric sleep(15); 18215d084d5Seric continue; 18315d084d5Seric } 18415d084d5Seric 1858b212fe0Seric /* arrange to (re)open the socket if necessary */ 18615d084d5Seric if (refusingconnections) 18715d084d5Seric { 1888a0cb579Seric (void) opendaemonsocket(FALSE); 18915d084d5Seric setproctitle("accepting connections"); 19015d084d5Seric refusingconnections = FALSE; 1916775ec03Sbostic } 192a44d5a5eSeric 193dfe840b2Seric #ifdef XDEBUG 194dfe840b2Seric /* check for disaster */ 195dfe840b2Seric { 19635852b23Seric char jbuf[MAXHOSTNAMELEN]; 197dfe840b2Seric 1988b212fe0Seric expand("\201j", jbuf, sizeof jbuf, CurEnv); 1998b212fe0Seric if (!wordinclass(jbuf, 'w')) 200dfe840b2Seric { 201dfe840b2Seric dumpstate("daemon lost $j"); 202dfe840b2Seric syslog(LOG_ALERT, "daemon process doesn't have $j in $=w; see syslog"); 203dfe840b2Seric abort(); 204dfe840b2Seric } 20535852b23Seric else if (j_has_dot && strchr(jbuf, '.') == NULL) 206dfe840b2Seric { 207dfe840b2Seric dumpstate("daemon $j lost dot"); 208dfe840b2Seric syslog(LOG_ALERT, "daemon process $j lost dot; see syslog"); 209dfe840b2Seric abort(); 210dfe840b2Seric } 211dfe840b2Seric } 212dfe840b2Seric #endif 213dfe840b2Seric 2141c71e510Seric /* wait for a connection */ 2151c71e510Seric do 2161c71e510Seric { 2171c71e510Seric errno = 0; 218dadb8687Seric lotherend = socksize; 2199b100374Sbostic t = accept(DaemonSocket, 2209b100374Sbostic (struct sockaddr *)&RealHostAddr, &lotherend); 2211c71e510Seric } while (t < 0 && errno == EINTR); 2221c71e510Seric if (t < 0) 2231c71e510Seric { 2241c71e510Seric syserr("getrequests: accept"); 2258b212fe0Seric 2268b212fe0Seric /* arrange to re-open the socket next time around */ 2278b212fe0Seric (void) close(DaemonSocket); 2288b212fe0Seric DaemonSocket = -1; 2291c71e510Seric sleep(5); 2301c71e510Seric continue; 2311c71e510Seric } 232d0a9e852Seric 233d0a9e852Seric /* 234d0a9e852Seric ** Create a subprocess to process the mail. 235d0a9e852Seric */ 236d0a9e852Seric 23761e4310fSeric if (tTd(15, 2)) 2381c71e510Seric printf("getrequests: forking (fd = %d)\n", t); 239eb889047Seric 240a8268164Seric pid = fork(); 241a8268164Seric if (pid < 0) 242a8268164Seric { 243a8268164Seric syserr("daemon: cannot fork"); 244a8268164Seric sleep(10); 2451c71e510Seric (void) close(t); 246a8268164Seric continue; 247a8268164Seric } 248a8268164Seric 249a8268164Seric if (pid == 0) 250a8268164Seric { 251da662164Seric char *p; 2529f8b0eadSeric extern char *hostnamebyanyaddr(); 2538b212fe0Seric extern void intsig(); 254a44d5a5eSeric 255a8268164Seric /* 256a8268164Seric ** CHILD -- return to caller. 257a44d5a5eSeric ** Collect verified idea of sending host. 258a8268164Seric ** Verify calling user id if possible here. 259a8268164Seric */ 260a8268164Seric 2612b9178d3Seric (void) setsignal(SIGCHLD, SIG_DFL); 2628b212fe0Seric (void) setsignal(SIGHUP, intsig); 2638b212fe0Seric (void) close(DaemonSocket); 2649f9b003eSeric DisConnected = FALSE; 265779ac194Seric 2664dd09a90Seric setproctitle("startup with %s", 2674dd09a90Seric anynet_ntoa(&RealHostAddr)); 2684dd09a90Seric 269a44d5a5eSeric /* determine host name */ 270da662164Seric p = hostnamebyanyaddr(&RealHostAddr); 27137b4af40Seric if (strlen(p) > MAXNAME) 27237b4af40Seric p[MAXNAME] = '\0'; 273da662164Seric RealHostName = newstr(p); 2744dd09a90Seric setproctitle("startup with %s", p); 27529dcf4baSeric 2762a6bc25bSeric #ifdef LOG 2771f2ff1a4Seric if (LogLevel > 11) 2782a6bc25bSeric { 2792a6bc25bSeric /* log connection information */ 2802a6bc25bSeric syslog(LOG_INFO, "connect from %s (%s)", 2819f8b0eadSeric RealHostName, anynet_ntoa(&RealHostAddr)); 2822a6bc25bSeric } 2832a6bc25bSeric #endif 2842a6bc25bSeric 285335eae58Seric if ((InChannel = fdopen(t, "r")) == NULL || 286335eae58Seric (t = dup(t)) < 0 || 287335eae58Seric (OutChannel = fdopen(t, "w")) == NULL) 288335eae58Seric { 289335eae58Seric syserr("cannot open SMTP server channel, fd=%d", t); 290335eae58Seric exit(0); 291335eae58Seric } 292244b09d1Seric 29329dcf4baSeric /* should we check for illegal connection here? XXX */ 294e17a3a5aSeric #ifdef XLA 295e17a3a5aSeric if (!xla_host_ok(RealHostName)) 296e17a3a5aSeric { 297244b09d1Seric message("421 Too many SMTP sessions for this host"); 298e17a3a5aSeric exit(0); 299e17a3a5aSeric } 300e17a3a5aSeric #endif 301a44d5a5eSeric 30261e4310fSeric if (tTd(15, 2)) 303d0a9e852Seric printf("getreq: returning\n"); 304a8268164Seric return; 305a8268164Seric } 306a8268164Seric 3073c154354Seric /* close the port so that others will hang (for a while) */ 3083c154354Seric (void) close(t); 3098e3e4b17Seric } 3103c154354Seric /*NOTREACHED*/ 3113c154354Seric } 3128e3e4b17Seric /* 3130084e6f6Seric ** OPENDAEMONSOCKET -- open the SMTP socket 3140084e6f6Seric ** 3150084e6f6Seric ** Deals with setting all appropriate options. DaemonAddr must 3160084e6f6Seric ** be set up in advance. 3170084e6f6Seric ** 3180084e6f6Seric ** Parameters: 31988ea5609Seric ** firsttime -- set if this is the initial open. 3200084e6f6Seric ** 3210084e6f6Seric ** Returns: 3220084e6f6Seric ** Size in bytes of the daemon socket addr. 3230084e6f6Seric ** 3240084e6f6Seric ** Side Effects: 3250084e6f6Seric ** Leaves DaemonSocket set to the open socket. 3260084e6f6Seric ** Exits if the socket cannot be created. 3270084e6f6Seric */ 3280084e6f6Seric 3296173568dSeric #define MAXOPENTRIES 10 /* maximum number of tries to open connection */ 3306173568dSeric 3310084e6f6Seric int 33288ea5609Seric opendaemonsocket(firsttime) 33388ea5609Seric bool firsttime; 3340084e6f6Seric { 3350084e6f6Seric int on = 1; 3368b212fe0Seric int socksize = 0; 3376173568dSeric int ntries = 0; 3386173568dSeric int saveerrno; 3390084e6f6Seric 3400084e6f6Seric if (tTd(15, 2)) 3410084e6f6Seric printf("opendaemonsocket()\n"); 3420084e6f6Seric 3436173568dSeric do 3446173568dSeric { 345254b93c3Seric if (ntries > 0) 346254b93c3Seric sleep(5); 34788ea5609Seric if (firsttime || DaemonSocket < 0) 34888ea5609Seric { 3490084e6f6Seric DaemonSocket = socket(DaemonAddr.sa.sa_family, SOCK_STREAM, 0); 3500084e6f6Seric if (DaemonSocket < 0) 3510084e6f6Seric { 3520084e6f6Seric /* probably another daemon already */ 3536173568dSeric saveerrno = errno; 3540084e6f6Seric syserr("opendaemonsocket: can't create server SMTP socket"); 3550084e6f6Seric severe: 3560084e6f6Seric # ifdef LOG 3570084e6f6Seric if (LogLevel > 0) 3580084e6f6Seric syslog(LOG_ALERT, "problem creating SMTP socket"); 3590084e6f6Seric # endif /* LOG */ 3606173568dSeric DaemonSocket = -1; 3616173568dSeric continue; 3620084e6f6Seric } 3630084e6f6Seric 3640084e6f6Seric /* turn on network debugging? */ 3650084e6f6Seric if (tTd(15, 101)) 3666173568dSeric (void) setsockopt(DaemonSocket, SOL_SOCKET, 3676173568dSeric SO_DEBUG, (char *)&on, 3686173568dSeric sizeof on); 3690084e6f6Seric 3706173568dSeric (void) setsockopt(DaemonSocket, SOL_SOCKET, 3716173568dSeric SO_REUSEADDR, (char *)&on, sizeof on); 3726173568dSeric (void) setsockopt(DaemonSocket, SOL_SOCKET, 3736173568dSeric SO_KEEPALIVE, (char *)&on, sizeof on); 3740084e6f6Seric 3750084e6f6Seric #ifdef SO_RCVBUF 3760084e6f6Seric if (TcpRcvBufferSize > 0) 3770084e6f6Seric { 3786173568dSeric if (setsockopt(DaemonSocket, SOL_SOCKET, 3796173568dSeric SO_RCVBUF, 3800084e6f6Seric (char *) &TcpRcvBufferSize, 3810084e6f6Seric sizeof(TcpRcvBufferSize)) < 0) 3820084e6f6Seric syserr("getrequests: setsockopt(SO_RCVBUF)"); 3830084e6f6Seric } 3840084e6f6Seric #endif 3850084e6f6Seric 3860084e6f6Seric switch (DaemonAddr.sa.sa_family) 3870084e6f6Seric { 3880084e6f6Seric # ifdef NETINET 3890084e6f6Seric case AF_INET: 3900084e6f6Seric socksize = sizeof DaemonAddr.sin; 3910084e6f6Seric break; 3920084e6f6Seric # endif 3930084e6f6Seric 3940084e6f6Seric # ifdef NETISO 3950084e6f6Seric case AF_ISO: 3960084e6f6Seric socksize = sizeof DaemonAddr.siso; 3970084e6f6Seric break; 3980084e6f6Seric # endif 3990084e6f6Seric 4000084e6f6Seric default: 4010084e6f6Seric socksize = sizeof DaemonAddr; 4020084e6f6Seric break; 4030084e6f6Seric } 4040084e6f6Seric 4050084e6f6Seric if (bind(DaemonSocket, &DaemonAddr.sa, socksize) < 0) 4060084e6f6Seric { 4076173568dSeric saveerrno = errno; 4080084e6f6Seric syserr("getrequests: cannot bind"); 4090084e6f6Seric (void) close(DaemonSocket); 4100084e6f6Seric goto severe; 4110084e6f6Seric } 41288ea5609Seric } 41388ea5609Seric if (!firsttime && listen(DaemonSocket, ListenQueueSize) < 0) 4140084e6f6Seric { 4156173568dSeric saveerrno = errno; 4160084e6f6Seric syserr("getrequests: cannot listen"); 4170084e6f6Seric (void) close(DaemonSocket); 4180084e6f6Seric goto severe; 4190084e6f6Seric } 4200084e6f6Seric return socksize; 4216173568dSeric } while (ntries++ < MAXOPENTRIES && transienterror(saveerrno)); 4228b212fe0Seric syserr("!opendaemonsocket: server SMTP socket wedged: exiting"); 4236173568dSeric finis(); 4240084e6f6Seric } 4250084e6f6Seric /* 426b7d7afcbSeric ** CLRDAEMON -- reset the daemon connection 427b7d7afcbSeric ** 428b7d7afcbSeric ** Parameters: 429b7d7afcbSeric ** none. 430b7d7afcbSeric ** 431b7d7afcbSeric ** Returns: 432b7d7afcbSeric ** none. 433b7d7afcbSeric ** 434b7d7afcbSeric ** Side Effects: 435b7d7afcbSeric ** releases any resources used by the passive daemon. 436b7d7afcbSeric */ 437b7d7afcbSeric 4388b212fe0Seric void 439b7d7afcbSeric clrdaemon() 440b7d7afcbSeric { 441b7d7afcbSeric if (DaemonSocket >= 0) 442b7d7afcbSeric (void) close(DaemonSocket); 443b7d7afcbSeric DaemonSocket = -1; 444b7d7afcbSeric } 445b7d7afcbSeric /* 446bfb80540Seric ** SETDAEMONOPTIONS -- set options for running the daemon 447bfb80540Seric ** 448bfb80540Seric ** Parameters: 449bfb80540Seric ** p -- the options line. 450bfb80540Seric ** 451bfb80540Seric ** Returns: 452bfb80540Seric ** none. 453bfb80540Seric */ 454bfb80540Seric 4558b212fe0Seric void 456bfb80540Seric setdaemonoptions(p) 457bfb80540Seric register char *p; 458bfb80540Seric { 459850144caSeric if (DaemonAddr.sa.sa_family == AF_UNSPEC) 460850144caSeric DaemonAddr.sa.sa_family = AF_INET; 461850144caSeric 462bfb80540Seric while (p != NULL) 463bfb80540Seric { 464bfb80540Seric register char *f; 465bfb80540Seric register char *v; 466bfb80540Seric 467bfb80540Seric while (isascii(*p) && isspace(*p)) 468bfb80540Seric p++; 469bfb80540Seric if (*p == '\0') 470bfb80540Seric break; 471bfb80540Seric f = p; 472bfb80540Seric p = strchr(p, ','); 473bfb80540Seric if (p != NULL) 474bfb80540Seric *p++ = '\0'; 475bfb80540Seric v = strchr(f, '='); 476bfb80540Seric if (v == NULL) 477bfb80540Seric continue; 478bfb80540Seric while (isascii(*++v) && isspace(*v)) 479bfb80540Seric continue; 480e7988623Seric if (isascii(*f) && isupper(*f)) 481e7988623Seric *f = tolower(*f); 482bfb80540Seric 483bfb80540Seric switch (*f) 484bfb80540Seric { 485850144caSeric case 'F': /* address family */ 486850144caSeric if (isascii(*v) && isdigit(*v)) 487850144caSeric DaemonAddr.sa.sa_family = atoi(v); 488850144caSeric #ifdef NETINET 489850144caSeric else if (strcasecmp(v, "inet") == 0) 490850144caSeric DaemonAddr.sa.sa_family = AF_INET; 491850144caSeric #endif 492850144caSeric #ifdef NETISO 493850144caSeric else if (strcasecmp(v, "iso") == 0) 494850144caSeric DaemonAddr.sa.sa_family = AF_ISO; 495850144caSeric #endif 496850144caSeric #ifdef NETNS 497850144caSeric else if (strcasecmp(v, "ns") == 0) 498850144caSeric DaemonAddr.sa.sa_family = AF_NS; 499850144caSeric #endif 500850144caSeric #ifdef NETX25 501850144caSeric else if (strcasecmp(v, "x.25") == 0) 502850144caSeric DaemonAddr.sa.sa_family = AF_CCITT; 503850144caSeric #endif 504850144caSeric else 505850144caSeric syserr("554 Unknown address family %s in Family=option", v); 506850144caSeric break; 507850144caSeric 508850144caSeric case 'A': /* address */ 509850144caSeric switch (DaemonAddr.sa.sa_family) 510850144caSeric { 511850144caSeric #ifdef NETINET 512850144caSeric case AF_INET: 513850144caSeric if (isascii(*v) && isdigit(*v)) 5148b212fe0Seric DaemonAddr.sin.sin_addr.s_addr = htonl(inet_network(v)); 515850144caSeric else 516850144caSeric { 517850144caSeric register struct netent *np; 518850144caSeric 519850144caSeric np = getnetbyname(v); 520850144caSeric if (np == NULL) 521850144caSeric syserr("554 network \"%s\" unknown", v); 522850144caSeric else 523850144caSeric DaemonAddr.sin.sin_addr.s_addr = np->n_net; 524850144caSeric } 525850144caSeric break; 526850144caSeric #endif 527850144caSeric 528850144caSeric default: 529850144caSeric syserr("554 Address= option unsupported for family %d", 530850144caSeric DaemonAddr.sa.sa_family); 531850144caSeric break; 532850144caSeric } 533850144caSeric break; 534850144caSeric 535bfb80540Seric case 'P': /* port */ 536850144caSeric switch (DaemonAddr.sa.sa_family) 537850144caSeric { 538850144caSeric short port; 539850144caSeric 540850144caSeric #ifdef NETINET 541850144caSeric case AF_INET: 542bfb80540Seric if (isascii(*v) && isdigit(*v)) 54376b70c58Seric DaemonAddr.sin.sin_port = htons(atoi(v)); 544bfb80540Seric else 545bfb80540Seric { 546bfb80540Seric register struct servent *sp; 547bfb80540Seric 548bfb80540Seric sp = getservbyname(v, "tcp"); 549bfb80540Seric if (sp == NULL) 550ad977999Seric syserr("554 service \"%s\" unknown", v); 551bfb80540Seric else 552bfb80540Seric DaemonAddr.sin.sin_port = sp->s_port; 553bfb80540Seric } 554bfb80540Seric break; 555850144caSeric #endif 556bfb80540Seric 557850144caSeric #ifdef NETISO 558850144caSeric case AF_ISO: 559850144caSeric /* assume two byte transport selector */ 560bfb80540Seric if (isascii(*v) && isdigit(*v)) 56176b70c58Seric port = htons(atoi(v)); 562bfb80540Seric else 563bfb80540Seric { 564850144caSeric register struct servent *sp; 565bfb80540Seric 566850144caSeric sp = getservbyname(v, "tcp"); 567850144caSeric if (sp == NULL) 568ad977999Seric syserr("554 service \"%s\" unknown", v); 569bfb80540Seric else 570850144caSeric port = sp->s_port; 571850144caSeric } 572850144caSeric bcopy((char *) &port, TSEL(&DaemonAddr.siso), 2); 573850144caSeric break; 574850144caSeric #endif 575850144caSeric 576850144caSeric default: 577850144caSeric syserr("554 Port= option unsupported for family %d", 578850144caSeric DaemonAddr.sa.sa_family); 579850144caSeric break; 580bfb80540Seric } 581bfb80540Seric break; 582bfc1eaf8Seric 583bfc1eaf8Seric case 'L': /* listen queue size */ 584bfc1eaf8Seric ListenQueueSize = atoi(v); 585bfc1eaf8Seric break; 586b35447dbSeric 587b35447dbSeric case 'S': /* send buffer size */ 588b35447dbSeric TcpSndBufferSize = atoi(v); 589b35447dbSeric break; 590b35447dbSeric 591b35447dbSeric case 'R': /* receive buffer size */ 592b35447dbSeric TcpRcvBufferSize = atoi(v); 593b35447dbSeric break; 594e7988623Seric 595e7988623Seric default: 596e7988623Seric syserr("554 DaemonPortOptions parameter \"%s\" unknown", f); 597bfb80540Seric } 598bfb80540Seric } 599bfb80540Seric } 600bfb80540Seric /* 6017aa493c5Seric ** MAKECONNECTION -- make a connection to an SMTP socket on another machine. 6027aa493c5Seric ** 6037aa493c5Seric ** Parameters: 6047aa493c5Seric ** host -- the name of the host. 60548ff0a9dSeric ** port -- the port number to connect to. 606655feedbSeric ** mci -- a pointer to the mail connection information 607655feedbSeric ** structure to be filled in. 608914346b1Seric ** usesecureport -- if set, use a low numbered (reserved) 609914346b1Seric ** port to provide some rudimentary authentication. 6107aa493c5Seric ** 6117aa493c5Seric ** Returns: 6127aa493c5Seric ** An exit code telling whether the connection could be 6137aa493c5Seric ** made and if not why not. 6147aa493c5Seric ** 6157aa493c5Seric ** Side Effects: 6167aa493c5Seric ** none. 6177aa493c5Seric */ 6187aa493c5Seric 619e2f2f828Seric SOCKADDR CurHostAddr; /* address of current host */ 62071ff6caaSeric 621b31e7f2bSeric int 622655feedbSeric makeconnection(host, port, mci, usesecureport) 6237aa493c5Seric char *host; 624210215eaSeric u_short port; 625b31e7f2bSeric register MCI *mci; 626914346b1Seric bool usesecureport; 6277aa493c5Seric { 6288b212fe0Seric register int i = 0; 6298b212fe0Seric register int s; 63004344589Sbloom register struct hostent *hp = (struct hostent *)NULL; 631e2f2f828Seric SOCKADDR addr; 6326286bb75Sbloom int sav_errno; 633e2f2f828Seric int addrlen; 6348b212fe0Seric bool firstconnect; 6359d4a8008Seric #if NAMED_BIND 636134746fbSeric extern int h_errno; 637134746fbSeric #endif 6387aa493c5Seric 6397aa493c5Seric /* 6407aa493c5Seric ** Set up the address for the mailer. 64171096d12Seric ** Accept "[a.b.c.d]" syntax for host name. 6427aa493c5Seric */ 6437aa493c5Seric 6449d4a8008Seric #if NAMED_BIND 645794bdbb9Smiriam h_errno = 0; 646134746fbSeric #endif 647794bdbb9Smiriam errno = 0; 648967778e2Seric bzero(&CurHostAddr, sizeof CurHostAddr); 649c931b82bSeric SmtpPhase = mci->mci_phase = "initial connection"; 650d945ebe8Seric CurHostName = host; 651794bdbb9Smiriam 65271096d12Seric if (host[0] == '[') 65371096d12Seric { 654a44d5a5eSeric long hid; 6556c2c3107Seric register char *p = strchr(host, ']'); 65671096d12Seric 657a44d5a5eSeric if (p != NULL) 65871096d12Seric { 659a44d5a5eSeric *p = '\0'; 6604d9c42c2Seric #ifdef NETINET 661a44d5a5eSeric hid = inet_addr(&host[1]); 662a7e21fe6Seric if (hid == -1) 6634d9c42c2Seric #endif 664a7e21fe6Seric { 665a7e21fe6Seric /* try it as a host name (avoid MX lookup) */ 6668b212fe0Seric hp = sm_gethostbyname(&host[1]); 667d8984352Seric if (hp == NULL && p[-1] == '.') 668d8984352Seric { 6698b212fe0Seric #if NAMED_BIND 6708b212fe0Seric int oldopts = _res.options; 6718b212fe0Seric 6728b212fe0Seric _res.options &= ~(RES_DEFNAMES|RES_DNSRCH); 6738b212fe0Seric #endif 674d8984352Seric p[-1] = '\0'; 6758b212fe0Seric hp = sm_gethostbyname(&host[1]); 676d8984352Seric p[-1] = '.'; 6778b212fe0Seric #if NAMED_BIND 6788b212fe0Seric _res.options = oldopts; 6798b212fe0Seric #endif 680d8984352Seric } 681a7e21fe6Seric *p = ']'; 682a7e21fe6Seric goto gothostent; 683a7e21fe6Seric } 684a44d5a5eSeric *p = ']'; 68571096d12Seric } 686a7e21fe6Seric if (p == NULL) 68771096d12Seric { 68808b25121Seric usrerr("553 Invalid numeric domain spec \"%s\"", host); 6895b068d51Seric mci->mci_status = "5.1.2"; 69071096d12Seric return (EX_NOHOST); 69171096d12Seric } 6924d9c42c2Seric #ifdef NETINET 6934d9c42c2Seric addr.sin.sin_family = AF_INET; /*XXX*/ 69483c1f4bcSeric addr.sin.sin_addr.s_addr = hid; 6954d9c42c2Seric #endif 69671096d12Seric } 6971c71e510Seric else 6981c71e510Seric { 699d8984352Seric register char *p = &host[strlen(host) - 1]; 700d8984352Seric 7018b212fe0Seric hp = sm_gethostbyname(host); 702d8984352Seric if (hp == NULL && *p == '.') 703d8984352Seric { 7048b212fe0Seric #if NAMED_BIND 7058b212fe0Seric int oldopts = _res.options; 7068b212fe0Seric 7078b212fe0Seric _res.options &= ~(RES_DEFNAMES|RES_DNSRCH); 7088b212fe0Seric #endif 709d8984352Seric *p = '\0'; 7108b212fe0Seric hp = sm_gethostbyname(host); 711d8984352Seric *p = '.'; 7128b212fe0Seric #if NAMED_BIND 7138b212fe0Seric _res.options = oldopts; 7148b212fe0Seric #endif 715d8984352Seric } 716a7e21fe6Seric gothostent: 717794bdbb9Smiriam if (hp == NULL) 718794bdbb9Smiriam { 7199d4a8008Seric #if NAMED_BIND 7208b212fe0Seric /* check for name server timeouts */ 7218b212fe0Seric if (errno == ETIMEDOUT || h_errno == TRY_AGAIN || 7228b212fe0Seric (errno == ECONNREFUSED && UseNameServer)) 7238b212fe0Seric { 7248b212fe0Seric mci->mci_status = "4.4.3"; 72552308a50Seric return (EX_TEMPFAIL); 7268b212fe0Seric } 727134746fbSeric #endif 7287aa493c5Seric return (EX_NOHOST); 729794bdbb9Smiriam } 73083c1f4bcSeric addr.sa.sa_family = hp->h_addrtype; 73183c1f4bcSeric switch (hp->h_addrtype) 73283c1f4bcSeric { 73383c1f4bcSeric #ifdef NETINET 73483c1f4bcSeric case AF_INET: 735e2f2f828Seric bcopy(hp->h_addr, 73683c1f4bcSeric &addr.sin.sin_addr, 7378b212fe0Seric INADDRSZ); 73883c1f4bcSeric break; 73983c1f4bcSeric #endif 74083c1f4bcSeric 74183c1f4bcSeric default: 742e2f2f828Seric bcopy(hp->h_addr, 74383c1f4bcSeric addr.sa.sa_data, 744e2f2f828Seric hp->h_length); 74583c1f4bcSeric break; 74683c1f4bcSeric } 74704344589Sbloom i = 1; 7481c71e510Seric } 7491c71e510Seric 7501c71e510Seric /* 7511c71e510Seric ** Determine the port number. 7521c71e510Seric */ 7531c71e510Seric 754fd7c0790Seric if (port != 0) 755e2f2f828Seric port = htons(port); 756fd7c0790Seric else 7571c71e510Seric { 7581c71e510Seric register struct servent *sp = getservbyname("smtp", "tcp"); 7591c71e510Seric 7601c71e510Seric if (sp == NULL) 7611c71e510Seric { 7623edb2e00Seric #ifdef LOG 7633edb2e00Seric if (LogLevel > 2) 7643edb2e00Seric syslog(LOG_ERR, "makeconnection: service \"smtp\" unknown"); 7653edb2e00Seric #endif 766e5311662Seric port = htons(25); 7671c71e510Seric } 768e5311662Seric else 769e2f2f828Seric port = sp->s_port; 770e2f2f828Seric } 771e2f2f828Seric 77283c1f4bcSeric switch (addr.sa.sa_family) 773e2f2f828Seric { 7744d9c42c2Seric #ifdef NETINET 775e2f2f828Seric case AF_INET: 77683c1f4bcSeric addr.sin.sin_port = port; 777e2f2f828Seric addrlen = sizeof (struct sockaddr_in); 778e2f2f828Seric break; 7794d9c42c2Seric #endif 780e2f2f828Seric 781e2f2f828Seric #ifdef NETISO 782e2f2f828Seric case AF_ISO: 783e2f2f828Seric /* assume two byte transport selector */ 784e2f2f828Seric bcopy((char *) &port, TSEL((struct sockaddr_iso *) &addr), 2); 785e2f2f828Seric addrlen = sizeof (struct sockaddr_iso); 786e2f2f828Seric break; 787e2f2f828Seric #endif 788e2f2f828Seric 789e2f2f828Seric default: 79083c1f4bcSeric syserr("Can't connect to address family %d", addr.sa.sa_family); 791e2f2f828Seric return (EX_NOHOST); 7921c71e510Seric } 7937aa493c5Seric 7947aa493c5Seric /* 7957aa493c5Seric ** Try to actually open the connection. 7967aa493c5Seric */ 7977aa493c5Seric 798e17a3a5aSeric #ifdef XLA 799e17a3a5aSeric /* if too many connections, don't bother trying */ 800e17a3a5aSeric if (!xla_noqueue_ok(host)) 801e17a3a5aSeric return EX_TEMPFAIL; 802e17a3a5aSeric #endif 803e17a3a5aSeric 8048b212fe0Seric firstconnect = TRUE; 805aea02ca1Seric for (;;) 806aea02ca1Seric { 80761e4310fSeric if (tTd(16, 1)) 808e2f2f828Seric printf("makeconnection (%s [%s])\n", 809e2f2f828Seric host, anynet_ntoa(&addr)); 8107aa493c5Seric 811226e3022Seric /* save for logging */ 812226e3022Seric CurHostAddr = addr; 813226e3022Seric 814914346b1Seric if (usesecureport) 815914346b1Seric { 816914346b1Seric int rport = IPPORT_RESERVED - 1; 817914346b1Seric 818914346b1Seric s = rresvport(&rport); 819914346b1Seric } 820914346b1Seric else 821914346b1Seric { 822af5e902cSeric s = socket(AF_INET, SOCK_STREAM, 0); 823914346b1Seric } 8247aa493c5Seric if (s < 0) 8257aa493c5Seric { 8266286bb75Sbloom sav_errno = errno; 827914346b1Seric syserr("makeconnection: no socket"); 8287aa493c5Seric goto failure; 8297aa493c5Seric } 8307aa493c5Seric 831b35447dbSeric #ifdef SO_SNDBUF 832b35447dbSeric if (TcpSndBufferSize > 0) 833b35447dbSeric { 834b35447dbSeric if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, 835bf217a95Seric (char *) &TcpSndBufferSize, 836b35447dbSeric sizeof(TcpSndBufferSize)) < 0) 837b35447dbSeric syserr("makeconnection: setsockopt(SO_SNDBUF)"); 838b35447dbSeric } 839b35447dbSeric #endif 840b35447dbSeric 84161e4310fSeric if (tTd(16, 1)) 842b31e7f2bSeric printf("makeconnection: fd=%d\n", s); 8431b6e4a15Seric 8441b6e4a15Seric /* turn on network debugging? */ 845a2ef5fa4Seric if (tTd(16, 101)) 84652308a50Seric { 84752308a50Seric int on = 1; 8486173568dSeric (void) setsockopt(s, SOL_SOCKET, SO_DEBUG, 849aea02ca1Seric (char *)&on, sizeof on); 85052308a50Seric } 85187d6e633Srick if (CurEnv->e_xfp != NULL) 852877a6142Seric (void) fflush(CurEnv->e_xfp); /* for debugging */ 8534bd6a662Seric errno = 0; /* for debugging */ 854e2f2f828Seric if (connect(s, (struct sockaddr *) &addr, addrlen) >= 0) 855aea02ca1Seric break; 856aea02ca1Seric 8578b212fe0Seric /* if running demand-dialed connection, try again */ 8588b212fe0Seric if (DialDelay > 0 && firstconnect) 8598b212fe0Seric { 8608b212fe0Seric if (tTd(16, 1)) 8618b212fe0Seric printf("Connect failed (%s); trying again...\n", 8628b212fe0Seric errstring(sav_errno)); 8638b212fe0Seric firstconnect = FALSE; 8648b212fe0Seric sleep(DialDelay); 8658b212fe0Seric continue; 8668b212fe0Seric } 8678b212fe0Seric 868aea02ca1Seric /* couldn't connect.... figure out why */ 8696286bb75Sbloom sav_errno = errno; 8706286bb75Sbloom (void) close(s); 8718b212fe0Seric if (hp != NULL && hp->h_addr_list[i]) 87204344589Sbloom { 873aea02ca1Seric if (tTd(16, 1)) 874e2f2f828Seric printf("Connect failed (%s); trying new address....\n", 875e2f2f828Seric errstring(sav_errno)); 87683c1f4bcSeric switch (addr.sa.sa_family) 87783c1f4bcSeric { 87883c1f4bcSeric #ifdef NETINET 87983c1f4bcSeric case AF_INET: 880e2f2f828Seric bcopy(hp->h_addr_list[i++], 88183c1f4bcSeric &addr.sin.sin_addr, 8828b212fe0Seric INADDRSZ); 88383c1f4bcSeric break; 88483c1f4bcSeric #endif 88583c1f4bcSeric 88683c1f4bcSeric default: 887e2f2f828Seric bcopy(hp->h_addr_list[i++], 88883c1f4bcSeric addr.sa.sa_data, 889914346b1Seric hp->h_length); 89083c1f4bcSeric break; 89183c1f4bcSeric } 892aea02ca1Seric continue; 89304344589Sbloom } 89404344589Sbloom 8957aa493c5Seric /* failure, decide if temporary or not */ 8967aa493c5Seric failure: 897244b09d1Seric #ifdef XLA 898244b09d1Seric xla_host_end(host); 899244b09d1Seric #endif 900e2de2524Seric if (transienterror(sav_errno)) 901e2de2524Seric return EX_TEMPFAIL; 902e2de2524Seric else 90387d6e633Srick { 90408b25121Seric message("%s", errstring(sav_errno)); 9057aa493c5Seric return (EX_UNAVAILABLE); 9067aa493c5Seric } 9077aa493c5Seric } 9087aa493c5Seric 9097aa493c5Seric /* connection ok, put it into canonical form */ 910335eae58Seric if ((mci->mci_out = fdopen(s, "w")) == NULL || 911335eae58Seric (s = dup(s)) < 0 || 912ab81ee53Seric (mci->mci_in = fdopen(s, "r")) == NULL) 913335eae58Seric { 914335eae58Seric syserr("cannot open SMTP client channel, fd=%d", s); 915335eae58Seric return EX_TEMPFAIL; 916335eae58Seric } 9177aa493c5Seric 918dca8e1f7Seric return (EX_OK); 9197aa493c5Seric } 920444eaf03Seric /* 921444eaf03Seric ** MYHOSTNAME -- return the name of this host. 922444eaf03Seric ** 923444eaf03Seric ** Parameters: 924444eaf03Seric ** hostbuf -- a place to return the name of this host. 925897f1869Seric ** size -- the size of hostbuf. 926444eaf03Seric ** 927444eaf03Seric ** Returns: 928444eaf03Seric ** A list of aliases for this host. 929444eaf03Seric ** 930444eaf03Seric ** Side Effects: 931d8d0a4aeSeric ** Adds numeric codes to $=w. 932444eaf03Seric */ 933444eaf03Seric 9348b212fe0Seric struct hostent * 935897f1869Seric myhostname(hostbuf, size) 936444eaf03Seric char hostbuf[]; 937897f1869Seric int size; 938444eaf03Seric { 93938ad259dSeric register struct hostent *hp; 9408b212fe0Seric extern bool getcanonname(); 9418b212fe0Seric extern int h_errno; 942444eaf03Seric 943af5e902cSeric if (gethostname(hostbuf, size) < 0) 944af5e902cSeric { 945af5e902cSeric (void) strcpy(hostbuf, "localhost"); 946af5e902cSeric } 9478b212fe0Seric hp = sm_gethostbyname(hostbuf); 9484a5c6430Seric if (hp == NULL) 9498b212fe0Seric return NULL; 9508b212fe0Seric if (strchr(hp->h_name, '.') != NULL || strchr(hostbuf, '.') == NULL) 951423161fbSeric { 95235852b23Seric (void) strncpy(hostbuf, hp->h_name, size - 1); 95335852b23Seric hostbuf[size - 1] = '\0'; 9548b212fe0Seric } 9554a5c6430Seric 9564a5c6430Seric #if NAMED_BIND 9578b212fe0Seric /* 9588b212fe0Seric ** If still no dot, try DNS directly (i.e., avoid NIS problems). 9598b212fe0Seric ** This ought to be driven from the configuration file, but 9608b212fe0Seric ** we are called before the configuration is read. We could 9618b212fe0Seric ** check for an /etc/resolv.conf file, but that isn't required. 9628b212fe0Seric ** All in all, a bit of a mess. 9638b212fe0Seric */ 96423668637Seric 9658b212fe0Seric if (strchr(hostbuf, '.') == NULL && 9668b212fe0Seric !getcanonname(hostbuf, size, TRUE) && 9678b212fe0Seric h_errno == TRY_AGAIN) 96823668637Seric { 9698b212fe0Seric /* try twice in case name server not yet started up */ 9708b212fe0Seric message("My unqualifed host name (%s) unknown to DNS; sleeping for retry", 97123668637Seric hostbuf); 9728b212fe0Seric sleep(60); 9738b212fe0Seric if (!getcanonname(hostbuf, size, TRUE)) 9748b212fe0Seric errno = h_errno + E_DNSBASE; 975747df804Seric } 976747df804Seric #endif 9778b212fe0Seric return (hp); 9787364df9fSeric } 979cb452edcSeric /* 9809f8b0eadSeric ** GETAUTHINFO -- get the real host name asociated with a file descriptor 9819f8b0eadSeric ** 9829f8b0eadSeric ** Uses RFC1413 protocol to try to get info from the other end. 983320e0d1cSeric ** 984320e0d1cSeric ** Parameters: 985320e0d1cSeric ** fd -- the descriptor 986320e0d1cSeric ** 987320e0d1cSeric ** Returns: 9889f8b0eadSeric ** The user@host information associated with this descriptor. 989320e0d1cSeric */ 990320e0d1cSeric 9919f8b0eadSeric static jmp_buf CtxAuthTimeout; 9929f8b0eadSeric 9938b212fe0Seric static void 9949f8b0eadSeric authtimeout() 9959f8b0eadSeric { 9969f8b0eadSeric longjmp(CtxAuthTimeout, 1); 9979f8b0eadSeric } 9989f8b0eadSeric 999320e0d1cSeric char * 10009f8b0eadSeric getauthinfo(fd) 1001320e0d1cSeric int fd; 1002320e0d1cSeric { 10039f8b0eadSeric int falen; 1004a5546e24Seric register char *p; 10059f8b0eadSeric SOCKADDR la; 10069f8b0eadSeric int lalen; 10079f8b0eadSeric register struct servent *sp; 10089f8b0eadSeric int s; 10099f8b0eadSeric int i; 10109f8b0eadSeric EVENT *ev; 1011579270a3Seric int nleft; 1012f036c8d7Seric char ibuf[MAXNAME + 1]; 10139f8b0eadSeric static char hbuf[MAXNAME * 2 + 2]; 10149f8b0eadSeric extern char *hostnamebyanyaddr(); 10159f8b0eadSeric extern char RealUserName[]; /* main.c */ 1016320e0d1cSeric 1017e29a76d1Seric falen = sizeof RealHostAddr; 10188b212fe0Seric if (isatty(fd) || getpeername(fd, &RealHostAddr.sa, &falen) < 0 || 10198b212fe0Seric falen <= 0 || RealHostAddr.sa.sa_family == 0) 10209f8b0eadSeric { 10219f8b0eadSeric (void) sprintf(hbuf, "%s@localhost", RealUserName); 102253853673Seric if (tTd(9, 1)) 10239f8b0eadSeric printf("getauthinfo: %s\n", hbuf); 1024320e0d1cSeric return hbuf; 1025320e0d1cSeric } 10269f8b0eadSeric 1027e29a76d1Seric if (RealHostName == NULL) 1028e29a76d1Seric { 1029e29a76d1Seric /* translate that to a host name */ 1030e29a76d1Seric RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr)); 1031e29a76d1Seric } 1032e29a76d1Seric 103393b3215bSeric if (TimeOuts.to_ident == 0) 103493b3215bSeric goto noident; 103593b3215bSeric 10369f8b0eadSeric lalen = sizeof la; 1037e29a76d1Seric if (RealHostAddr.sa.sa_family != AF_INET || 10389f8b0eadSeric getsockname(fd, &la.sa, &lalen) < 0 || lalen <= 0 || 10399f8b0eadSeric la.sa.sa_family != AF_INET) 10409f8b0eadSeric { 10419f8b0eadSeric /* no ident info */ 10429f8b0eadSeric goto noident; 10439f8b0eadSeric } 10449f8b0eadSeric 10459f8b0eadSeric /* create ident query */ 104681d2944fSeric (void) sprintf(ibuf, "%d,%d\r\n", 1047e29a76d1Seric ntohs(RealHostAddr.sin.sin_port), ntohs(la.sin.sin_port)); 10489f8b0eadSeric 10499f8b0eadSeric /* create local address */ 1050d6af7dadSeric la.sin.sin_port = 0; 10519f8b0eadSeric 10529f8b0eadSeric /* create foreign address */ 10539f8b0eadSeric sp = getservbyname("auth", "tcp"); 10549f8b0eadSeric if (sp != NULL) 1055e29a76d1Seric RealHostAddr.sin.sin_port = sp->s_port; 10569f8b0eadSeric else 1057e29a76d1Seric RealHostAddr.sin.sin_port = htons(113); 10589f8b0eadSeric 10599f8b0eadSeric s = -1; 10609f8b0eadSeric if (setjmp(CtxAuthTimeout) != 0) 10619f8b0eadSeric { 10629f8b0eadSeric if (s >= 0) 10639f8b0eadSeric (void) close(s); 10649f8b0eadSeric goto noident; 10659f8b0eadSeric } 10669f8b0eadSeric 10679f8b0eadSeric /* put a timeout around the whole thing */ 1068a0f780efSeric ev = setevent(TimeOuts.to_ident, authtimeout, 0); 10699f8b0eadSeric 1070d6af7dadSeric /* connect to foreign IDENT server using same address as SMTP socket */ 10719f8b0eadSeric s = socket(AF_INET, SOCK_STREAM, 0); 10729f8b0eadSeric if (s < 0) 10739f8b0eadSeric { 10749f8b0eadSeric clrevent(ev); 10759f8b0eadSeric goto noident; 10769f8b0eadSeric } 1077d6af7dadSeric if (bind(s, &la.sa, sizeof la.sin) < 0 || 1078e29a76d1Seric connect(s, &RealHostAddr.sa, sizeof RealHostAddr.sin) < 0) 10799f8b0eadSeric { 10807c201575Seric goto closeident; 10819f8b0eadSeric } 10829f8b0eadSeric 108353853673Seric if (tTd(9, 10)) 108481d2944fSeric printf("getauthinfo: sent %s", ibuf); 10859f8b0eadSeric 10869f8b0eadSeric /* send query */ 108781d2944fSeric if (write(s, ibuf, strlen(ibuf)) < 0) 10889f8b0eadSeric goto closeident; 10899f8b0eadSeric 10909f8b0eadSeric /* get result */ 109181d2944fSeric p = &ibuf[0]; 1092b26156f6Seric nleft = sizeof ibuf - 1; 1093579270a3Seric while ((i = read(s, p, nleft)) > 0) 1094579270a3Seric { 1095579270a3Seric p += i; 1096579270a3Seric nleft -= i; 1097579270a3Seric } 10989f8b0eadSeric (void) close(s); 10999f8b0eadSeric clrevent(ev); 110081d2944fSeric if (i < 0 || p == &ibuf[0]) 11019f8b0eadSeric goto noident; 1102579270a3Seric 1103579270a3Seric if (*--p == '\n' && *--p == '\r') 1104579270a3Seric p--; 1105579270a3Seric *++p = '\0'; 11069f8b0eadSeric 110753853673Seric if (tTd(9, 3)) 110881d2944fSeric printf("getauthinfo: got %s\n", ibuf); 11099f8b0eadSeric 11109f8b0eadSeric /* parse result */ 111181d2944fSeric p = strchr(ibuf, ':'); 11129f8b0eadSeric if (p == NULL) 11139f8b0eadSeric { 11149f8b0eadSeric /* malformed response */ 11159f8b0eadSeric goto noident; 11169f8b0eadSeric } 11179f8b0eadSeric while (isascii(*++p) && isspace(*p)) 11189f8b0eadSeric continue; 11199f8b0eadSeric if (strncasecmp(p, "userid", 6) != 0) 11209f8b0eadSeric { 11219f8b0eadSeric /* presumably an error string */ 11229f8b0eadSeric goto noident; 11239f8b0eadSeric } 11249f8b0eadSeric p += 6; 11259f8b0eadSeric while (isascii(*p) && isspace(*p)) 11269f8b0eadSeric p++; 11279f8b0eadSeric if (*p++ != ':') 11289f8b0eadSeric { 11299f8b0eadSeric /* either useridxx or malformed response */ 11309f8b0eadSeric goto noident; 11319f8b0eadSeric } 11329f8b0eadSeric 11339f8b0eadSeric /* p now points to the OSTYPE field */ 11348b212fe0Seric while (isascii(*p) && isspace(*p)) 11358b212fe0Seric p++; 11368b212fe0Seric if (strncasecmp(p, "other", 5) == 0 && 11378b212fe0Seric (p[5] == ':' || p[5] == ' ' || p[5] == ',' || p[5] == '\0')) 11388b212fe0Seric { 11398b212fe0Seric /* not useful information */ 11408b212fe0Seric goto noident; 11418b212fe0Seric } 11429f8b0eadSeric p = strchr(p, ':'); 11439f8b0eadSeric if (p == NULL) 11449f8b0eadSeric { 11459f8b0eadSeric /* malformed response */ 11469f8b0eadSeric goto noident; 11479f8b0eadSeric } 114853853673Seric 114953853673Seric /* 1413 says don't do this -- but it's broken otherwise */ 115053853673Seric while (isascii(*++p) && isspace(*p)) 115153853673Seric continue; 11529f8b0eadSeric 1153a7763879Seric /* p now points to the authenticated name -- copy carefully */ 115481d2944fSeric cleanstrcpy(hbuf, p, MAXNAME); 115593433f31Seric i = strlen(hbuf); 1156a7763879Seric hbuf[i++] = '@'; 1157a7763879Seric strcpy(&hbuf[i], RealHostName == NULL ? "localhost" : RealHostName); 115811af795cSeric goto postident; 115953853673Seric 11607c201575Seric closeident: 11617c201575Seric (void) close(s); 11627c201575Seric clrevent(ev); 11637c201575Seric 116453853673Seric noident: 1165f7869e68Seric if (RealHostName == NULL) 1166f7869e68Seric { 1167f7869e68Seric if (tTd(9, 1)) 1168f7869e68Seric printf("getauthinfo: NULL\n"); 1169f7869e68Seric return NULL; 1170f7869e68Seric } 117153853673Seric (void) strcpy(hbuf, RealHostName); 117253853673Seric 117311af795cSeric postident: 117411af795cSeric #if IP_SRCROUTE 117511af795cSeric /* 117611af795cSeric ** Extract IP source routing information. 117711af795cSeric ** 117811af795cSeric ** Format of output for a connection from site a through b 117911af795cSeric ** through c to d: 118011af795cSeric ** loose: @site-c@site-b:site-a 118111af795cSeric ** strict: !@site-c@site-b:site-a 118211af795cSeric ** 118311af795cSeric ** o - pointer within ipopt_list structure. 118411af795cSeric ** q - pointer within ls/ss rr route data 118511af795cSeric ** p - pointer to hbuf 118611af795cSeric */ 118711af795cSeric 118811af795cSeric if (RealHostAddr.sa.sa_family == AF_INET) 118911af795cSeric { 119011af795cSeric int ipoptlen, j; 11914d6b8580Seric u_char *q; 119211af795cSeric u_char *o; 119311af795cSeric struct in_addr addr; 119411af795cSeric struct ipoption ipopt; 119511af795cSeric 119611af795cSeric ipoptlen = sizeof ipopt; 119711af795cSeric if (getsockopt(fd, IPPROTO_IP, IP_OPTIONS, 119811af795cSeric (char *) &ipopt, &ipoptlen) < 0) 119911af795cSeric goto noipsr; 120011af795cSeric if (ipoptlen == 0) 120111af795cSeric goto noipsr; 12024d6b8580Seric o = (u_char *) ipopt.ipopt_list; 1203*5db00695Seric while (o != NULL && o < (u_char *) &ipopt + ipoptlen) 120411af795cSeric { 120511af795cSeric switch (*o) 120611af795cSeric { 120711af795cSeric case IPOPT_EOL: 120811af795cSeric o = NULL; 120911af795cSeric break; 121011af795cSeric 121111af795cSeric case IPOPT_NOP: 121211af795cSeric o++; 121311af795cSeric break; 121411af795cSeric 121511af795cSeric case IPOPT_SSRR: 121611af795cSeric case IPOPT_LSRR: 121711af795cSeric p = &hbuf[strlen(hbuf)]; 121811af795cSeric sprintf(p, " [%s@%s", 121911af795cSeric *o == IPOPT_SSRR ? "!" : "", 122011af795cSeric inet_ntoa(ipopt.ipopt_dst)); 122111af795cSeric p += strlen(p); 122211af795cSeric 122311af795cSeric /* o[1] is option length */ 122411af795cSeric j = *++o / sizeof(struct in_addr) - 1; 122511af795cSeric 122611af795cSeric /* q skips length and router pointer to data */ 122711af795cSeric q = o + 2; 122811af795cSeric for ( ; j >= 0; j--) 122911af795cSeric { 123011af795cSeric memcpy(&addr, q, sizeof(addr)); 12314d6b8580Seric sprintf(p, "%c%s", 123211af795cSeric j ? '@' : ':', 123311af795cSeric inet_ntoa(addr)); 12344d6b8580Seric p += strlen(p); 123511af795cSeric q += sizeof(struct in_addr); 123611af795cSeric } 123711af795cSeric o += *o; 123811af795cSeric break; 123911af795cSeric 124011af795cSeric default: 124111af795cSeric /* Skip over option */ 124211af795cSeric o += o[1]; 124311af795cSeric break; 124411af795cSeric } 124511af795cSeric } 124611af795cSeric strcat(hbuf,"]"); 124711af795cSeric goto postipsr; 124811af795cSeric } 124911af795cSeric #endif 125011af795cSeric 125111af795cSeric noipsr: 1252f7869e68Seric if (RealHostName != NULL && RealHostName[0] != '[') 12539f8b0eadSeric { 12549f8b0eadSeric p = &hbuf[strlen(hbuf)]; 12559f8b0eadSeric (void) sprintf(p, " [%s]", anynet_ntoa(&RealHostAddr)); 12569f8b0eadSeric } 125711af795cSeric 125811af795cSeric postipsr: 125953853673Seric if (tTd(9, 1)) 12609f8b0eadSeric printf("getauthinfo: %s\n", hbuf); 12619f8b0eadSeric return hbuf; 12629f8b0eadSeric } 1263320e0d1cSeric /* 126408de856eSeric ** HOST_MAP_LOOKUP -- turn a hostname into canonical form 126515d084d5Seric ** 126615d084d5Seric ** Parameters: 126705b57da8Seric ** map -- a pointer to this map (unused). 126808de856eSeric ** name -- the (presumably unqualified) hostname. 126900b385a9Seric ** av -- unused -- for compatibility with other mapping 1270d798a1deSeric ** functions. 12712d29d43aSeric ** statp -- an exit status (out parameter) -- set to 12722d29d43aSeric ** EX_TEMPFAIL if the name server is unavailable. 127315d084d5Seric ** 127415d084d5Seric ** Returns: 127515d084d5Seric ** The mapping, if found. 127615d084d5Seric ** NULL if no mapping found. 127715d084d5Seric ** 127815d084d5Seric ** Side Effects: 127915d084d5Seric ** Looks up the host specified in hbuf. If it is not 128015d084d5Seric ** the canonical name for that host, return the canonical 128115d084d5Seric ** name. 1282f36ede03Sbostic */ 1283cb452edcSeric 128415d084d5Seric char * 128500b385a9Seric host_map_lookup(map, name, av, statp) 128605b57da8Seric MAP *map; 128708de856eSeric char *name; 128800b385a9Seric char **av; 12892d29d43aSeric int *statp; 129099f7cf32Seric { 129199f7cf32Seric register struct hostent *hp; 12928b212fe0Seric struct in_addr in_addr; 129305b57da8Seric char *cp; 1294eea91d78Seric register STAB *s; 12958b212fe0Seric char hbuf[MAXNAME + 1]; 12969d4a8008Seric #if NAMED_BIND 1297eea91d78Seric extern int h_errno; 1298c304a798Seric #endif 12995f78836eSmiriam 1300f36ede03Sbostic /* 1301eea91d78Seric ** See if we have already looked up this name. If so, just 1302eea91d78Seric ** return it. 1303eea91d78Seric */ 1304eea91d78Seric 130508de856eSeric s = stab(name, ST_NAMECANON, ST_ENTER); 1306eea91d78Seric if (bitset(NCF_VALID, s->s_namecanon.nc_flags)) 1307eea91d78Seric { 1308f92c3297Seric if (tTd(9, 1)) 130908de856eSeric printf("host_map_lookup(%s) => CACHE %s\n", 131098826a83Seric name, 131198826a83Seric s->s_namecanon.nc_cname == NULL 131298826a83Seric ? "NULL" 13135f08d413Seric : s->s_namecanon.nc_cname); 1314eea91d78Seric errno = s->s_namecanon.nc_errno; 13159d4a8008Seric #if NAMED_BIND 1316eea91d78Seric h_errno = s->s_namecanon.nc_herrno; 1317c304a798Seric #endif 1318eea91d78Seric *statp = s->s_namecanon.nc_stat; 1319fcfb36d9Seric if (*statp == EX_TEMPFAIL) 1320ed63aae0Seric { 13215b068d51Seric CurEnv->e_status = "4.4.3"; 1322fcfb36d9Seric usrerr("451 %s: Name server timeout", 1323ed63aae0Seric shortenstring(name, 33)); 1324ed63aae0Seric } 1325eea91d78Seric return s->s_namecanon.nc_cname; 1326eea91d78Seric } 1327eea91d78Seric 1328eea91d78Seric /* 1329eea91d78Seric ** If first character is a bracket, then it is an address 1330eea91d78Seric ** lookup. Address is copied into a temporary buffer to 133108de856eSeric ** strip the brackets and to preserve name if address is 1332eea91d78Seric ** unknown. 1333f36ede03Sbostic */ 133415d084d5Seric 133508de856eSeric if (*name != '[') 133615d084d5Seric { 1337d798a1deSeric extern bool getcanonname(); 1338d798a1deSeric 13398cb4653dSeric if (tTd(9, 1)) 134008de856eSeric printf("host_map_lookup(%s) => ", name); 1341eea91d78Seric s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ 13428b212fe0Seric if (strlen(name) < sizeof hbuf) 134308de856eSeric (void) strcpy(hbuf, name); 13448b212fe0Seric else 13458b212fe0Seric { 13468b212fe0Seric bcopy(name, hbuf, sizeof hbuf - 1); 13478b212fe0Seric hbuf[sizeof hbuf - 1] = '\0'; 13488b212fe0Seric } 13490183c3f6Seric if (getcanonname(hbuf, sizeof hbuf - 1, !NoMXforCanon)) 13509040ec4fSeric { 13519040ec4fSeric if (tTd(9, 1)) 13529040ec4fSeric printf("%s\n", hbuf); 135300b385a9Seric cp = map_rewrite(map, hbuf, strlen(hbuf), av); 135400b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 135500b385a9Seric return cp; 13569040ec4fSeric } 135715d084d5Seric else 13589040ec4fSeric { 13592d29d43aSeric register struct hostent *hp; 13602d29d43aSeric 1361c304a798Seric s->s_namecanon.nc_errno = errno; 13629d4a8008Seric #if NAMED_BIND 1363c304a798Seric s->s_namecanon.nc_herrno = h_errno; 13649040ec4fSeric if (tTd(9, 1)) 13652d29d43aSeric printf("FAIL (%d)\n", h_errno); 13662d29d43aSeric switch (h_errno) 13672d29d43aSeric { 13682d29d43aSeric case TRY_AGAIN: 136989cb2793Seric if (UseNameServer) 13708820d51bSeric { 13715b068d51Seric CurEnv->e_status = "4.4.3"; 1372fcfb36d9Seric usrerr("451 %s: Name server timeout", 1373ed63aae0Seric shortenstring(name, 33)); 13748820d51bSeric } 13752d29d43aSeric *statp = EX_TEMPFAIL; 13762d29d43aSeric break; 13772d29d43aSeric 13782d29d43aSeric case HOST_NOT_FOUND: 137980027ae6Seric case NO_DATA: 13802d29d43aSeric *statp = EX_NOHOST; 13812d29d43aSeric break; 13822d29d43aSeric 13832d29d43aSeric case NO_RECOVERY: 13842d29d43aSeric *statp = EX_SOFTWARE; 13852d29d43aSeric break; 13862d29d43aSeric 13872d29d43aSeric default: 13882d29d43aSeric *statp = EX_UNAVAILABLE; 13892d29d43aSeric break; 13902d29d43aSeric } 1391c304a798Seric #else 1392c304a798Seric if (tTd(9, 1)) 1393c304a798Seric printf("FAIL\n"); 1394c304a798Seric *statp = EX_NOHOST; 1395c304a798Seric #endif 1396eea91d78Seric s->s_namecanon.nc_stat = *statp; 13978b212fe0Seric if ((*statp != EX_TEMPFAIL && *statp != EX_NOHOST) || 13988b212fe0Seric UseNameServer) 139915d084d5Seric return NULL; 14002d29d43aSeric 14012d29d43aSeric /* 14022d29d43aSeric ** Try to look it up in /etc/hosts 14032d29d43aSeric */ 14042d29d43aSeric 14058b212fe0Seric hp = sm_gethostbyname(name); 14062d29d43aSeric if (hp == NULL) 14072d29d43aSeric { 14082d29d43aSeric /* no dice there either */ 1409eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_NOHOST; 14102d29d43aSeric return NULL; 14112d29d43aSeric } 14122d29d43aSeric 1413eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_OK; 141400b385a9Seric cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); 141500b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 141600b385a9Seric return cp; 141715d084d5Seric } 14189040ec4fSeric } 141908de856eSeric if ((cp = strchr(name, ']')) == NULL) 142015d084d5Seric return (NULL); 142134e39927Sbostic *cp = '\0'; 14228b212fe0Seric in_addr.s_addr = inet_addr(&name[1]); 142338ad259dSeric 142438ad259dSeric /* nope -- ask the name server */ 14258b212fe0Seric hp = sm_gethostbyaddr((char *)&in_addr, INADDRSZ, AF_INET); 1426eea91d78Seric s->s_namecanon.nc_errno = errno; 14279d4a8008Seric #if NAMED_BIND 1428eea91d78Seric s->s_namecanon.nc_herrno = h_errno; 1429c304a798Seric #endif 1430eea91d78Seric s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ 14315f78836eSmiriam if (hp == NULL) 1432eea91d78Seric { 1433eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_NOHOST; 143415d084d5Seric return (NULL); 1435eea91d78Seric } 143615d084d5Seric 143738ad259dSeric /* found a match -- copy out */ 143800b385a9Seric cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); 1439eea91d78Seric s->s_namecanon.nc_stat = *statp = EX_OK; 144000b385a9Seric s->s_namecanon.nc_cname = newstr(cp); 144100b385a9Seric return cp; 144299f7cf32Seric } 1443e2f2f828Seric /* 1444e2f2f828Seric ** ANYNET_NTOA -- convert a network address to printable form. 1445e2f2f828Seric ** 1446e2f2f828Seric ** Parameters: 1447e2f2f828Seric ** sap -- a pointer to a sockaddr structure. 1448e2f2f828Seric ** 1449e2f2f828Seric ** Returns: 1450e2f2f828Seric ** A printable version of that sockaddr. 1451e2f2f828Seric */ 1452e2f2f828Seric 1453543d9d93Seric #ifdef NETLINK 145406cc5485Seric # include <net/if_dl.h> 145506cc5485Seric #endif 145606cc5485Seric 1457e2f2f828Seric char * 1458e2f2f828Seric anynet_ntoa(sap) 1459e2f2f828Seric register SOCKADDR *sap; 1460e2f2f828Seric { 1461e2f2f828Seric register char *bp; 1462e2f2f828Seric register char *ap; 1463e2f2f828Seric int l; 1464e387851eSeric static char buf[100]; 1465e2f2f828Seric 14668cb4653dSeric /* check for null/zero family */ 14678cb4653dSeric if (sap == NULL) 14688cb4653dSeric return "NULLADDR"; 14698cb4653dSeric if (sap->sa.sa_family == 0) 14708cb4653dSeric return "0"; 14718cb4653dSeric 1472e387851eSeric switch (sap->sa.sa_family) 1473e387851eSeric { 1474139b52c8Seric #ifdef NETUNIX 1475e387851eSeric case AF_UNIX: 1476c24cf5a4Seric if (sap->sunix.sun_path[0] != '\0') 1477c24cf5a4Seric sprintf(buf, "[UNIX: %.64s]", sap->sunix.sun_path); 1478e387851eSeric else 1479e387851eSeric sprintf(buf, "[UNIX: localhost]"); 1480e387851eSeric return buf; 1481e387851eSeric #endif 1482e387851eSeric 148383c1f4bcSeric #ifdef NETINET 1484e387851eSeric case AF_INET: 1485482e28bcSeric return inet_ntoa(sap->sin.sin_addr); 148683c1f4bcSeric #endif 1487e2f2f828Seric 1488543d9d93Seric #ifdef NETLINK 148906cc5485Seric case AF_LINK: 149006cc5485Seric sprintf(buf, "[LINK: %s]", 149106cc5485Seric link_ntoa((struct sockaddr_dl *) &sap->sa)); 149206cc5485Seric return buf; 149306cc5485Seric #endif 1494e387851eSeric default: 149506cc5485Seric /* this case is needed when nothing is #defined */ 149606cc5485Seric /* in order to keep the switch syntactically correct */ 1497e387851eSeric break; 1498e387851eSeric } 1499e387851eSeric 1500e2f2f828Seric /* unknown family -- just dump bytes */ 150183c1f4bcSeric (void) sprintf(buf, "Family %d: ", sap->sa.sa_family); 1502e2f2f828Seric bp = &buf[strlen(buf)]; 150383c1f4bcSeric ap = sap->sa.sa_data; 150483c1f4bcSeric for (l = sizeof sap->sa.sa_data; --l >= 0; ) 1505e2f2f828Seric { 1506e2f2f828Seric (void) sprintf(bp, "%02x:", *ap++ & 0377); 1507e2f2f828Seric bp += 3; 1508e2f2f828Seric } 1509e2f2f828Seric *--bp = '\0'; 1510e2f2f828Seric return buf; 1511e2f2f828Seric } 15129f8b0eadSeric /* 15139f8b0eadSeric ** HOSTNAMEBYANYADDR -- return name of host based on address 15149f8b0eadSeric ** 15159f8b0eadSeric ** Parameters: 15169f8b0eadSeric ** sap -- SOCKADDR pointer 15179f8b0eadSeric ** 15189f8b0eadSeric ** Returns: 15199f8b0eadSeric ** text representation of host name. 15209f8b0eadSeric ** 15219f8b0eadSeric ** Side Effects: 15229f8b0eadSeric ** none. 15239f8b0eadSeric */ 15249f8b0eadSeric 15259f8b0eadSeric char * 15269f8b0eadSeric hostnamebyanyaddr(sap) 15279f8b0eadSeric register SOCKADDR *sap; 15289f8b0eadSeric { 15299f8b0eadSeric register struct hostent *hp; 15303490b9dfSeric int saveretry; 15313490b9dfSeric 15329d4a8008Seric #if NAMED_BIND 15333490b9dfSeric /* shorten name server timeout to avoid higher level timeouts */ 15343490b9dfSeric saveretry = _res.retry; 15353490b9dfSeric _res.retry = 3; 15363490b9dfSeric #endif /* NAMED_BIND */ 15373490b9dfSeric 15389f8b0eadSeric switch (sap->sa.sa_family) 15399f8b0eadSeric { 15409f8b0eadSeric #ifdef NETINET 15419f8b0eadSeric case AF_INET: 15428b212fe0Seric hp = sm_gethostbyaddr((char *) &sap->sin.sin_addr, 15438b212fe0Seric INADDRSZ, 15449f8b0eadSeric AF_INET); 15459f8b0eadSeric break; 15469f8b0eadSeric #endif 15479f8b0eadSeric 15489f8b0eadSeric #ifdef NETISO 15499f8b0eadSeric case AF_ISO: 15508b212fe0Seric hp = sm_gethostbyaddr((char *) &sap->siso.siso_addr, 15519f8b0eadSeric sizeof sap->siso.siso_addr, 15529f8b0eadSeric AF_ISO); 15539f8b0eadSeric break; 15549f8b0eadSeric #endif 15559f8b0eadSeric 1556e387851eSeric case AF_UNIX: 1557e387851eSeric hp = NULL; 1558e387851eSeric break; 1559e387851eSeric 15609f8b0eadSeric default: 15618b212fe0Seric hp = sm_gethostbyaddr(sap->sa.sa_data, 15629f8b0eadSeric sizeof sap->sa.sa_data, 15639f8b0eadSeric sap->sa.sa_family); 15649f8b0eadSeric break; 15659f8b0eadSeric } 15669f8b0eadSeric 15679d4a8008Seric #if NAMED_BIND 15683490b9dfSeric _res.retry = saveretry; 15693490b9dfSeric #endif /* NAMED_BIND */ 15703490b9dfSeric 15719f8b0eadSeric if (hp != NULL) 15729f8b0eadSeric return hp->h_name; 15739f8b0eadSeric else 15749f8b0eadSeric { 15759f8b0eadSeric /* produce a dotted quad */ 15769f8b0eadSeric static char buf[512]; 15779f8b0eadSeric 15789f8b0eadSeric (void) sprintf(buf, "[%s]", anynet_ntoa(sap)); 15799f8b0eadSeric return buf; 15809f8b0eadSeric } 15819f8b0eadSeric } 1582f36ede03Sbostic 15836c2c3107Seric # else /* DAEMON */ 158499f7cf32Seric /* code for systems without sophisticated networking */ 1585444eaf03Seric 1586444eaf03Seric /* 1587444eaf03Seric ** MYHOSTNAME -- stub version for case of no daemon code. 158821e9914dSeric ** 158921e9914dSeric ** Can't convert to upper case here because might be a UUCP name. 1590897f1869Seric ** 1591897f1869Seric ** Mark, you can change this to be anything you want...... 1592444eaf03Seric */ 1593444eaf03Seric 1594444eaf03Seric char ** 1595897f1869Seric myhostname(hostbuf, size) 1596444eaf03Seric char hostbuf[]; 1597897f1869Seric int size; 1598444eaf03Seric { 1599444eaf03Seric register FILE *f; 1600444eaf03Seric 1601444eaf03Seric hostbuf[0] = '\0'; 1602444eaf03Seric f = fopen("/usr/include/whoami", "r"); 1603444eaf03Seric if (f != NULL) 1604444eaf03Seric { 1605897f1869Seric (void) fgets(hostbuf, size, f); 1606444eaf03Seric fixcrlf(hostbuf, TRUE); 1607444eaf03Seric (void) fclose(f); 1608444eaf03Seric } 1609444eaf03Seric return (NULL); 1610444eaf03Seric } 161199f7cf32Seric /* 16129f8b0eadSeric ** GETAUTHINFO -- get the real host name asociated with a file descriptor 1613320e0d1cSeric ** 1614320e0d1cSeric ** Parameters: 1615320e0d1cSeric ** fd -- the descriptor 1616320e0d1cSeric ** 1617320e0d1cSeric ** Returns: 1618320e0d1cSeric ** The host name associated with this descriptor, if it can 1619320e0d1cSeric ** be determined. 1620320e0d1cSeric ** NULL otherwise. 1621320e0d1cSeric ** 1622320e0d1cSeric ** Side Effects: 1623320e0d1cSeric ** none 1624320e0d1cSeric */ 1625320e0d1cSeric 1626320e0d1cSeric char * 16279f8b0eadSeric getauthinfo(fd) 1628320e0d1cSeric int fd; 1629320e0d1cSeric { 1630320e0d1cSeric return NULL; 1631320e0d1cSeric } 1632320e0d1cSeric /* 163399f7cf32Seric ** MAPHOSTNAME -- turn a hostname into canonical form 163499f7cf32Seric ** 163599f7cf32Seric ** Parameters: 163605b57da8Seric ** map -- a pointer to the database map. 163708de856eSeric ** name -- a buffer containing a hostname. 163815d084d5Seric ** avp -- a pointer to a (cf file defined) argument vector. 16392d29d43aSeric ** statp -- an exit status (out parameter). 164099f7cf32Seric ** 164199f7cf32Seric ** Returns: 164215d084d5Seric ** mapped host name 1643cb452edcSeric ** FALSE otherwise. 164499f7cf32Seric ** 164599f7cf32Seric ** Side Effects: 164608de856eSeric ** Looks up the host specified in name. If it is not 164799f7cf32Seric ** the canonical name for that host, replace it with 164899f7cf32Seric ** the canonical name. If the name is unknown, or it 164999f7cf32Seric ** is already the canonical name, leave it unchanged. 165099f7cf32Seric */ 165199f7cf32Seric 165299f7cf32Seric /*ARGSUSED*/ 165315d084d5Seric char * 165408de856eSeric host_map_lookup(map, name, avp, statp) 165505b57da8Seric MAP *map; 165608de856eSeric char *name; 165715d084d5Seric char **avp; 16582d29d43aSeric char *statp; 165999f7cf32Seric { 16602d29d43aSeric register struct hostent *hp; 16612d29d43aSeric 16628b212fe0Seric hp = sm_gethostbyname(name); 16632d29d43aSeric if (hp != NULL) 16642d29d43aSeric return hp->h_name; 16652d29d43aSeric *statp = EX_NOHOST; 166615d084d5Seric return NULL; 166799f7cf32Seric } 166899f7cf32Seric 16696c2c3107Seric #endif /* DAEMON */ 1670