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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1983 Eric P. Allman | |
78ed81a3 | 3 | * Copyright (c) 1988, 1993 |
4 | * The Regents of the University of California. All rights reserved. | |
15637ed4 RG |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in the | |
13 | * documentation and/or other materials provided with the distribution. | |
14 | * 3. All advertising materials mentioning features or use of this software | |
15 | * must display the following acknowledgement: | |
16 | * This product includes software developed by the University of | |
17 | * California, Berkeley and its contributors. | |
18 | * 4. Neither the name of the University nor the names of its contributors | |
19 | * may be used to endorse or promote products derived from this software | |
20 | * without specific prior written permission. | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
32 | * SUCH DAMAGE. | |
33 | */ | |
34 | ||
35 | #include <errno.h> | |
78ed81a3 | 36 | #include <signal.h> |
15637ed4 RG |
37 | #include "sendmail.h" |
38 | ||
39 | #ifndef lint | |
40 | #ifdef DAEMON | |
78ed81a3 | 41 | static char sccsid[] = "@(#)daemon.c 8.2 (Berkeley) 7/13/93 (with daemon mode)"; |
15637ed4 | 42 | #else |
78ed81a3 | 43 | static char sccsid[] = "@(#)daemon.c 8.2 (Berkeley) 7/13/93 (without daemon mode)"; |
15637ed4 RG |
44 | #endif |
45 | #endif /* not lint */ | |
46 | ||
15637ed4 RG |
47 | #ifdef DAEMON |
48 | ||
49 | # include <netdb.h> | |
15637ed4 RG |
50 | # include <sys/wait.h> |
51 | # include <sys/time.h> | |
78ed81a3 | 52 | |
53 | #ifdef NAMED_BIND | |
54 | # include <arpa/nameser.h> | |
55 | # include <resolv.h> | |
56 | #endif | |
15637ed4 RG |
57 | |
58 | /* | |
59 | ** DAEMON.C -- routines to use when running as a daemon. | |
60 | ** | |
61 | ** This entire file is highly dependent on the 4.2 BSD | |
62 | ** interprocess communication primitives. No attempt has | |
63 | ** been made to make this file portable to Version 7, | |
64 | ** Version 6, MPX files, etc. If you should try such a | |
65 | ** thing yourself, I recommend chucking the entire file | |
66 | ** and starting from scratch. Basic semantics are: | |
67 | ** | |
68 | ** getrequests() | |
69 | ** Opens a port and initiates a connection. | |
70 | ** Returns in a child. Must set InChannel and | |
71 | ** OutChannel appropriately. | |
72 | ** clrdaemon() | |
73 | ** Close any open files associated with getting | |
74 | ** the connection; this is used when running the queue, | |
75 | ** etc., to avoid having extra file descriptors during | |
76 | ** the queue run and to avoid confusing the network | |
77 | ** code (if it cares). | |
78ed81a3 | 78 | ** makeconnection(host, port, outfile, infile, usesecureport) |
15637ed4 RG |
79 | ** Make a connection to the named host on the given |
80 | ** port. Set *outfile and *infile to the files | |
81 | ** appropriate for communication. Returns zero on | |
82 | ** success, else an exit status describing the | |
83 | ** error. | |
78ed81a3 | 84 | ** host_map_lookup(map, hbuf, avp, pstat) |
85 | ** Convert the entry in hbuf into a canonical form. | |
15637ed4 RG |
86 | */ |
87 | \f/* | |
88 | ** GETREQUESTS -- open mail IPC port and get requests. | |
89 | ** | |
90 | ** Parameters: | |
91 | ** none. | |
92 | ** | |
93 | ** Returns: | |
94 | ** none. | |
95 | ** | |
96 | ** Side Effects: | |
97 | ** Waits until some interesting activity occurs. When | |
98 | ** it does, a child is created to process it, and the | |
99 | ** parent waits for completion. Return from this | |
100 | ** routine is always in the child. The file pointers | |
101 | ** "InChannel" and "OutChannel" should be set to point | |
102 | ** to the communication channel. | |
103 | */ | |
104 | ||
78ed81a3 | 105 | int DaemonSocket = -1; /* fd describing socket */ |
106 | SOCKADDR DaemonAddr; /* socket for incoming */ | |
107 | int ListenQueueSize = 10; /* size of listen queue */ | |
15637ed4 RG |
108 | |
109 | getrequests() | |
110 | { | |
111 | int t; | |
112 | register struct servent *sp; | |
113 | int on = 1; | |
78ed81a3 | 114 | bool refusingconnections = TRUE; |
115 | FILE *pidf; | |
15637ed4 RG |
116 | extern void reapchild(); |
117 | ||
118 | /* | |
119 | ** Set up the address for the mailer. | |
120 | */ | |
121 | ||
78ed81a3 | 122 | if (DaemonAddr.sin.sin_family == 0) |
123 | DaemonAddr.sin.sin_family = AF_INET; | |
124 | if (DaemonAddr.sin.sin_addr.s_addr == 0) | |
125 | DaemonAddr.sin.sin_addr.s_addr = INADDR_ANY; | |
126 | if (DaemonAddr.sin.sin_port == 0) | |
15637ed4 | 127 | { |
78ed81a3 | 128 | sp = getservbyname("smtp", "tcp"); |
129 | if (sp == NULL) | |
130 | { | |
131 | syserr("554 service \"smtp\" unknown"); | |
132 | goto severe; | |
133 | } | |
134 | #ifdef _SCO_unix_ | |
135 | DaemonAddr.sin.sin_port = htons(sp->s_port); | |
136 | #else | |
137 | DaemonAddr.sin.sin_port = sp->s_port; | |
138 | #endif | |
15637ed4 | 139 | } |
15637ed4 RG |
140 | |
141 | /* | |
142 | ** Try to actually open the connection. | |
143 | */ | |
144 | ||
145 | if (tTd(15, 1)) | |
78ed81a3 | 146 | printf("getrequests: port 0x%x\n", DaemonAddr.sin.sin_port); |
15637ed4 RG |
147 | |
148 | /* get a socket for the SMTP connection */ | |
78ed81a3 | 149 | DaemonSocket = socket(DaemonAddr.sa.sa_family, SOCK_STREAM, 0); |
15637ed4 RG |
150 | if (DaemonSocket < 0) |
151 | { | |
152 | /* probably another daemon already */ | |
153 | syserr("getrequests: can't create socket"); | |
154 | severe: | |
155 | # ifdef LOG | |
156 | if (LogLevel > 0) | |
78ed81a3 | 157 | syslog(LOG_ALERT, "problem creating SMTP socket"); |
158 | # endif /* LOG */ | |
15637ed4 RG |
159 | finis(); |
160 | } | |
161 | ||
162 | /* turn on network debugging? */ | |
78ed81a3 | 163 | if (tTd(15, 101)) |
15637ed4 RG |
164 | (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof on); |
165 | ||
166 | (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof on); | |
167 | (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_KEEPALIVE, (char *)&on, sizeof on); | |
168 | ||
78ed81a3 | 169 | switch (DaemonAddr.sa.sa_family) |
15637ed4 | 170 | { |
78ed81a3 | 171 | # ifdef NETINET |
172 | case AF_INET: | |
173 | t = sizeof DaemonAddr.sin; | |
174 | break; | |
175 | # endif | |
176 | ||
177 | # ifdef NETISO | |
178 | case AF_ISO: | |
179 | t = sizeof DaemonAddr.siso; | |
180 | break; | |
181 | # endif | |
182 | ||
183 | default: | |
184 | t = sizeof DaemonAddr; | |
185 | break; | |
15637ed4 | 186 | } |
78ed81a3 | 187 | |
188 | if (bind(DaemonSocket, &DaemonAddr.sa, t) < 0) | |
15637ed4 | 189 | { |
78ed81a3 | 190 | syserr("getrequests: cannot bind"); |
15637ed4 RG |
191 | (void) close(DaemonSocket); |
192 | goto severe; | |
193 | } | |
194 | ||
195 | (void) signal(SIGCHLD, reapchild); | |
196 | ||
78ed81a3 | 197 | /* write the pid to the log file for posterity */ |
198 | pidf = fopen(PidFile, "w"); | |
199 | if (pidf != NULL) | |
200 | { | |
201 | fprintf(pidf, "%d\n", getpid()); | |
202 | fclose(pidf); | |
203 | } | |
204 | ||
205 | ||
15637ed4 RG |
206 | if (tTd(15, 1)) |
207 | printf("getrequests: %d\n", DaemonSocket); | |
208 | ||
209 | for (;;) | |
210 | { | |
211 | register int pid; | |
212 | auto int lotherend; | |
78ed81a3 | 213 | extern bool refuseconnections(); |
15637ed4 RG |
214 | |
215 | /* see if we are rejecting connections */ | |
78ed81a3 | 216 | CurrentLA = getla(); |
217 | if (refuseconnections()) | |
15637ed4 | 218 | { |
78ed81a3 | 219 | if (!refusingconnections) |
220 | { | |
221 | /* don't queue so peer will fail quickly */ | |
222 | (void) listen(DaemonSocket, 0); | |
223 | refusingconnections = TRUE; | |
224 | } | |
225 | setproctitle("rejecting connections: load average: %d", | |
226 | CurrentLA); | |
15637ed4 | 227 | sleep(5); |
78ed81a3 | 228 | continue; |
229 | } | |
230 | ||
231 | if (refusingconnections) | |
232 | { | |
233 | /* start listening again */ | |
234 | if (listen(DaemonSocket, ListenQueueSize) < 0) | |
235 | { | |
236 | syserr("getrequests: cannot listen"); | |
237 | (void) close(DaemonSocket); | |
238 | goto severe; | |
239 | } | |
240 | setproctitle("accepting connections"); | |
241 | refusingconnections = FALSE; | |
15637ed4 RG |
242 | } |
243 | ||
244 | /* wait for a connection */ | |
15637ed4 RG |
245 | do |
246 | { | |
247 | errno = 0; | |
248 | lotherend = sizeof RealHostAddr; | |
249 | t = accept(DaemonSocket, | |
250 | (struct sockaddr *)&RealHostAddr, &lotherend); | |
251 | } while (t < 0 && errno == EINTR); | |
252 | if (t < 0) | |
253 | { | |
254 | syserr("getrequests: accept"); | |
255 | sleep(5); | |
256 | continue; | |
257 | } | |
258 | ||
259 | /* | |
260 | ** Create a subprocess to process the mail. | |
261 | */ | |
262 | ||
263 | if (tTd(15, 2)) | |
264 | printf("getrequests: forking (fd = %d)\n", t); | |
265 | ||
266 | pid = fork(); | |
267 | if (pid < 0) | |
268 | { | |
269 | syserr("daemon: cannot fork"); | |
270 | sleep(10); | |
271 | (void) close(t); | |
272 | continue; | |
273 | } | |
274 | ||
275 | if (pid == 0) | |
276 | { | |
78ed81a3 | 277 | extern char *hostnamebyanyaddr(); |
15637ed4 RG |
278 | |
279 | /* | |
280 | ** CHILD -- return to caller. | |
281 | ** Collect verified idea of sending host. | |
282 | ** Verify calling user id if possible here. | |
283 | */ | |
284 | ||
285 | (void) signal(SIGCHLD, SIG_DFL); | |
78ed81a3 | 286 | OpMode = MD_SMTP; |
15637ed4 RG |
287 | |
288 | /* determine host name */ | |
78ed81a3 | 289 | RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr)); |
15637ed4 | 290 | |
78ed81a3 | 291 | #ifdef LOG |
292 | if (LogLevel > 10) | |
293 | { | |
294 | /* log connection information */ | |
295 | syslog(LOG_INFO, "connect from %s (%s)", | |
296 | RealHostName, anynet_ntoa(&RealHostAddr)); | |
15637ed4 | 297 | } |
78ed81a3 | 298 | #endif |
15637ed4 RG |
299 | |
300 | (void) close(DaemonSocket); | |
301 | InChannel = fdopen(t, "r"); | |
302 | OutChannel = fdopen(dup(t), "w"); | |
78ed81a3 | 303 | |
304 | /* should we check for illegal connection here? XXX */ | |
305 | #ifdef XLA | |
306 | if (!xla_host_ok(RealHostName)) | |
307 | { | |
308 | message("421 Too many SMTP sessions for this host"); | |
309 | exit(0); | |
310 | } | |
311 | #endif | |
312 | ||
15637ed4 RG |
313 | if (tTd(15, 2)) |
314 | printf("getreq: returning\n"); | |
15637ed4 RG |
315 | return; |
316 | } | |
317 | ||
318 | /* close the port so that others will hang (for a while) */ | |
319 | (void) close(t); | |
320 | } | |
321 | /*NOTREACHED*/ | |
322 | } | |
323 | \f/* | |
324 | ** CLRDAEMON -- reset the daemon connection | |
325 | ** | |
326 | ** Parameters: | |
327 | ** none. | |
328 | ** | |
329 | ** Returns: | |
330 | ** none. | |
331 | ** | |
332 | ** Side Effects: | |
333 | ** releases any resources used by the passive daemon. | |
334 | */ | |
335 | ||
336 | clrdaemon() | |
337 | { | |
338 | if (DaemonSocket >= 0) | |
339 | (void) close(DaemonSocket); | |
340 | DaemonSocket = -1; | |
341 | } | |
342 | \f/* | |
78ed81a3 | 343 | ** SETDAEMONOPTIONS -- set options for running the daemon |
344 | ** | |
345 | ** Parameters: | |
346 | ** p -- the options line. | |
347 | ** | |
348 | ** Returns: | |
349 | ** none. | |
350 | */ | |
351 | ||
352 | setdaemonoptions(p) | |
353 | register char *p; | |
354 | { | |
355 | if (DaemonAddr.sa.sa_family == AF_UNSPEC) | |
356 | DaemonAddr.sa.sa_family = AF_INET; | |
357 | ||
358 | while (p != NULL) | |
359 | { | |
360 | register char *f; | |
361 | register char *v; | |
362 | ||
363 | while (isascii(*p) && isspace(*p)) | |
364 | p++; | |
365 | if (*p == '\0') | |
366 | break; | |
367 | f = p; | |
368 | p = strchr(p, ','); | |
369 | if (p != NULL) | |
370 | *p++ = '\0'; | |
371 | v = strchr(f, '='); | |
372 | if (v == NULL) | |
373 | continue; | |
374 | while (isascii(*++v) && isspace(*v)) | |
375 | continue; | |
376 | ||
377 | switch (*f) | |
378 | { | |
379 | case 'F': /* address family */ | |
380 | if (isascii(*v) && isdigit(*v)) | |
381 | DaemonAddr.sa.sa_family = atoi(v); | |
382 | #ifdef NETINET | |
383 | else if (strcasecmp(v, "inet") == 0) | |
384 | DaemonAddr.sa.sa_family = AF_INET; | |
385 | #endif | |
386 | #ifdef NETISO | |
387 | else if (strcasecmp(v, "iso") == 0) | |
388 | DaemonAddr.sa.sa_family = AF_ISO; | |
389 | #endif | |
390 | #ifdef NETNS | |
391 | else if (strcasecmp(v, "ns") == 0) | |
392 | DaemonAddr.sa.sa_family = AF_NS; | |
393 | #endif | |
394 | #ifdef NETX25 | |
395 | else if (strcasecmp(v, "x.25") == 0) | |
396 | DaemonAddr.sa.sa_family = AF_CCITT; | |
397 | #endif | |
398 | else | |
399 | syserr("554 Unknown address family %s in Family=option", v); | |
400 | break; | |
401 | ||
402 | case 'A': /* address */ | |
403 | switch (DaemonAddr.sa.sa_family) | |
404 | { | |
405 | #ifdef NETINET | |
406 | case AF_INET: | |
407 | if (isascii(*v) && isdigit(*v)) | |
408 | DaemonAddr.sin.sin_addr.s_addr = inet_network(v); | |
409 | else | |
410 | { | |
411 | register struct netent *np; | |
412 | ||
413 | np = getnetbyname(v); | |
414 | if (np == NULL) | |
415 | syserr("554 network \"%s\" unknown", v); | |
416 | else | |
417 | DaemonAddr.sin.sin_addr.s_addr = np->n_net; | |
418 | } | |
419 | break; | |
420 | #endif | |
421 | ||
422 | default: | |
423 | syserr("554 Address= option unsupported for family %d", | |
424 | DaemonAddr.sa.sa_family); | |
425 | break; | |
426 | } | |
427 | break; | |
428 | ||
429 | case 'P': /* port */ | |
430 | switch (DaemonAddr.sa.sa_family) | |
431 | { | |
432 | short port; | |
433 | ||
434 | #ifdef NETINET | |
435 | case AF_INET: | |
436 | if (isascii(*v) && isdigit(*v)) | |
437 | DaemonAddr.sin.sin_port = atoi(v); | |
438 | else | |
439 | { | |
440 | register struct servent *sp; | |
441 | ||
442 | sp = getservbyname(v, "tcp"); | |
443 | if (sp == NULL) | |
444 | syserr("554 service \"%s\" unknown", v); | |
445 | else | |
446 | { | |
447 | #ifdef _SCO_unix_ | |
448 | DaemonAddr.sin.sin_port = htons(sp->s_port); | |
449 | #else | |
450 | DaemonAddr.sin.sin_port = sp->s_port; | |
451 | #endif | |
452 | } | |
453 | } | |
454 | break; | |
455 | #endif | |
456 | ||
457 | #ifdef NETISO | |
458 | case AF_ISO: | |
459 | /* assume two byte transport selector */ | |
460 | if (isascii(*v) && isdigit(*v)) | |
461 | port = atoi(v); | |
462 | else | |
463 | { | |
464 | register struct servent *sp; | |
465 | ||
466 | sp = getservbyname(v, "tcp"); | |
467 | if (sp == NULL) | |
468 | syserr("554 service \"%s\" unknown", v); | |
469 | else | |
470 | port = sp->s_port; | |
471 | } | |
472 | bcopy((char *) &port, TSEL(&DaemonAddr.siso), 2); | |
473 | break; | |
474 | #endif | |
475 | ||
476 | default: | |
477 | syserr("554 Port= option unsupported for family %d", | |
478 | DaemonAddr.sa.sa_family); | |
479 | break; | |
480 | } | |
481 | break; | |
482 | ||
483 | case 'L': /* listen queue size */ | |
484 | ListenQueueSize = atoi(v); | |
485 | break; | |
486 | } | |
487 | } | |
488 | } | |
489 | \f/* | |
15637ed4 RG |
490 | ** MAKECONNECTION -- make a connection to an SMTP socket on another machine. |
491 | ** | |
492 | ** Parameters: | |
493 | ** host -- the name of the host. | |
494 | ** port -- the port number to connect to. | |
78ed81a3 | 495 | ** mci -- a pointer to the mail connection information |
496 | ** structure to be filled in. | |
497 | ** usesecureport -- if set, use a low numbered (reserved) | |
498 | ** port to provide some rudimentary authentication. | |
15637ed4 RG |
499 | ** |
500 | ** Returns: | |
501 | ** An exit code telling whether the connection could be | |
502 | ** made and if not why not. | |
503 | ** | |
504 | ** Side Effects: | |
505 | ** none. | |
506 | */ | |
507 | ||
78ed81a3 | 508 | SOCKADDR CurHostAddr; /* address of current host */ |
509 | ||
510 | int | |
511 | makeconnection(host, port, mci, usesecureport) | |
15637ed4 RG |
512 | char *host; |
513 | u_short port; | |
78ed81a3 | 514 | register MCI *mci; |
515 | bool usesecureport; | |
15637ed4 RG |
516 | { |
517 | register int i, s; | |
518 | register struct hostent *hp = (struct hostent *)NULL; | |
78ed81a3 | 519 | SOCKADDR addr; |
15637ed4 | 520 | int sav_errno; |
78ed81a3 | 521 | int addrlen; |
15637ed4 RG |
522 | #ifdef NAMED_BIND |
523 | extern int h_errno; | |
524 | #endif | |
525 | ||
526 | /* | |
527 | ** Set up the address for the mailer. | |
528 | ** Accept "[a.b.c.d]" syntax for host name. | |
529 | */ | |
530 | ||
531 | #ifdef NAMED_BIND | |
532 | h_errno = 0; | |
533 | #endif | |
534 | errno = 0; | |
78ed81a3 | 535 | bzero(&CurHostAddr, sizeof CurHostAddr); |
536 | CurHostName = host; | |
15637ed4 RG |
537 | |
538 | if (host[0] == '[') | |
539 | { | |
540 | long hid; | |
78ed81a3 | 541 | register char *p = strchr(host, ']'); |
15637ed4 RG |
542 | |
543 | if (p != NULL) | |
544 | { | |
545 | *p = '\0'; | |
78ed81a3 | 546 | #ifdef NETINET |
15637ed4 | 547 | hid = inet_addr(&host[1]); |
78ed81a3 | 548 | if (hid == -1) |
549 | #endif | |
550 | { | |
551 | /* try it as a host name (avoid MX lookup) */ | |
552 | hp = gethostbyname(&host[1]); | |
553 | *p = ']'; | |
554 | goto gothostent; | |
555 | } | |
15637ed4 RG |
556 | *p = ']'; |
557 | } | |
78ed81a3 | 558 | if (p == NULL) |
15637ed4 | 559 | { |
78ed81a3 | 560 | usrerr("553 Invalid numeric domain spec \"%s\"", host); |
15637ed4 RG |
561 | return (EX_NOHOST); |
562 | } | |
78ed81a3 | 563 | #ifdef NETINET |
564 | addr.sin.sin_family = AF_INET; /*XXX*/ | |
565 | addr.sin.sin_addr.s_addr = hid; | |
566 | #endif | |
15637ed4 RG |
567 | } |
568 | else | |
569 | { | |
570 | hp = gethostbyname(host); | |
78ed81a3 | 571 | gothostent: |
15637ed4 RG |
572 | if (hp == NULL) |
573 | { | |
574 | #ifdef NAMED_BIND | |
575 | if (errno == ETIMEDOUT || h_errno == TRY_AGAIN) | |
576 | return (EX_TEMPFAIL); | |
577 | ||
578 | /* if name server is specified, assume temp fail */ | |
579 | if (errno == ECONNREFUSED && UseNameServer) | |
580 | return (EX_TEMPFAIL); | |
581 | #endif | |
15637ed4 RG |
582 | return (EX_NOHOST); |
583 | } | |
78ed81a3 | 584 | addr.sa.sa_family = hp->h_addrtype; |
585 | switch (hp->h_addrtype) | |
586 | { | |
587 | #ifdef NETINET | |
588 | case AF_INET: | |
589 | bcopy(hp->h_addr, | |
590 | &addr.sin.sin_addr, | |
591 | hp->h_length); | |
592 | break; | |
593 | #endif | |
594 | ||
595 | default: | |
596 | bcopy(hp->h_addr, | |
597 | addr.sa.sa_data, | |
598 | hp->h_length); | |
599 | break; | |
600 | } | |
15637ed4 RG |
601 | i = 1; |
602 | } | |
603 | ||
604 | /* | |
605 | ** Determine the port number. | |
606 | */ | |
607 | ||
608 | if (port != 0) | |
78ed81a3 | 609 | port = htons(port); |
15637ed4 RG |
610 | else |
611 | { | |
612 | register struct servent *sp = getservbyname("smtp", "tcp"); | |
613 | ||
614 | if (sp == NULL) | |
615 | { | |
78ed81a3 | 616 | syserr("554 makeconnection: service \"smtp\" unknown"); |
617 | return (EX_OSERR); | |
15637ed4 | 618 | } |
78ed81a3 | 619 | #ifdef _SCO_unix_ |
620 | port = htons(sp->s_port); | |
621 | #else | |
622 | port = sp->s_port; | |
623 | #endif | |
624 | } | |
625 | ||
626 | switch (addr.sa.sa_family) | |
627 | { | |
628 | #ifdef NETINET | |
629 | case AF_INET: | |
630 | addr.sin.sin_port = port; | |
631 | addrlen = sizeof (struct sockaddr_in); | |
632 | break; | |
633 | #endif | |
634 | ||
635 | #ifdef NETISO | |
636 | case AF_ISO: | |
637 | /* assume two byte transport selector */ | |
638 | bcopy((char *) &port, TSEL((struct sockaddr_iso *) &addr), 2); | |
639 | addrlen = sizeof (struct sockaddr_iso); | |
640 | break; | |
641 | #endif | |
642 | ||
643 | default: | |
644 | syserr("Can't connect to address family %d", addr.sa.sa_family); | |
645 | return (EX_NOHOST); | |
15637ed4 RG |
646 | } |
647 | ||
648 | /* | |
649 | ** Try to actually open the connection. | |
650 | */ | |
651 | ||
78ed81a3 | 652 | #ifdef XLA |
653 | /* if too many connections, don't bother trying */ | |
654 | if (!xla_noqueue_ok(host)) | |
655 | return EX_TEMPFAIL; | |
656 | #endif | |
15637ed4 | 657 | |
78ed81a3 | 658 | for (;;) |
15637ed4 | 659 | { |
78ed81a3 | 660 | if (tTd(16, 1)) |
661 | printf("makeconnection (%s [%s])\n", | |
662 | host, anynet_ntoa(&addr)); | |
15637ed4 | 663 | |
78ed81a3 | 664 | /* save for logging */ |
665 | CurHostAddr = addr; | |
15637ed4 | 666 | |
78ed81a3 | 667 | if (usesecureport) |
668 | { | |
669 | int rport = IPPORT_RESERVED - 1; | |
670 | ||
671 | s = rresvport(&rport); | |
672 | } | |
673 | else | |
674 | { | |
675 | s = socket(AF_INET, SOCK_STREAM, 0); | |
676 | } | |
677 | if (s < 0) | |
678 | { | |
679 | sav_errno = errno; | |
680 | syserr("makeconnection: no socket"); | |
681 | goto failure; | |
682 | } | |
683 | ||
684 | if (tTd(16, 1)) | |
685 | printf("makeconnection: fd=%d\n", s); | |
686 | ||
687 | /* turn on network debugging? */ | |
688 | if (tTd(16, 101)) | |
689 | { | |
690 | int on = 1; | |
691 | (void) setsockopt(DaemonSocket, SOL_SOCKET, SO_DEBUG, | |
692 | (char *)&on, sizeof on); | |
693 | } | |
694 | if (CurEnv->e_xfp != NULL) | |
695 | (void) fflush(CurEnv->e_xfp); /* for debugging */ | |
696 | errno = 0; /* for debugging */ | |
697 | if (connect(s, (struct sockaddr *) &addr, addrlen) >= 0) | |
698 | break; | |
699 | ||
700 | /* couldn't connect.... figure out why */ | |
15637ed4 RG |
701 | sav_errno = errno; |
702 | (void) close(s); | |
703 | if (hp && hp->h_addr_list[i]) | |
704 | { | |
78ed81a3 | 705 | if (tTd(16, 1)) |
706 | printf("Connect failed (%s); trying new address....\n", | |
707 | errstring(sav_errno)); | |
708 | switch (addr.sa.sa_family) | |
709 | { | |
710 | #ifdef NETINET | |
711 | case AF_INET: | |
712 | bcopy(hp->h_addr_list[i++], | |
713 | &addr.sin.sin_addr, | |
714 | hp->h_length); | |
715 | break; | |
716 | #endif | |
717 | ||
718 | default: | |
719 | bcopy(hp->h_addr_list[i++], | |
720 | addr.sa.sa_data, | |
721 | hp->h_length); | |
722 | break; | |
723 | } | |
724 | continue; | |
15637ed4 RG |
725 | } |
726 | ||
727 | /* failure, decide if temporary or not */ | |
728 | failure: | |
78ed81a3 | 729 | #ifdef XLA |
730 | xla_host_end(host); | |
731 | #endif | |
732 | if (transienterror(sav_errno)) | |
733 | return EX_TEMPFAIL; | |
734 | else | |
15637ed4 | 735 | { |
78ed81a3 | 736 | message("%s", errstring(sav_errno)); |
737 | return (EX_UNAVAILABLE); | |
15637ed4 RG |
738 | } |
739 | } | |
740 | ||
741 | /* connection ok, put it into canonical form */ | |
78ed81a3 | 742 | mci->mci_out = fdopen(s, "w"); |
743 | mci->mci_in = fdopen(dup(s), "r"); | |
15637ed4 RG |
744 | |
745 | return (EX_OK); | |
746 | } | |
747 | \f/* | |
748 | ** MYHOSTNAME -- return the name of this host. | |
749 | ** | |
750 | ** Parameters: | |
751 | ** hostbuf -- a place to return the name of this host. | |
752 | ** size -- the size of hostbuf. | |
753 | ** | |
754 | ** Returns: | |
755 | ** A list of aliases for this host. | |
756 | ** | |
757 | ** Side Effects: | |
78ed81a3 | 758 | ** Sets the MyIpAddrs buffer to a list of my IP addresses. |
15637ed4 RG |
759 | */ |
760 | ||
78ed81a3 | 761 | struct in_addr MyIpAddrs[MAXIPADDR + 1]; |
762 | ||
15637ed4 RG |
763 | char ** |
764 | myhostname(hostbuf, size) | |
765 | char hostbuf[]; | |
766 | int size; | |
767 | { | |
78ed81a3 | 768 | register struct hostent *hp; |
15637ed4 | 769 | extern struct hostent *gethostbyname(); |
15637ed4 RG |
770 | |
771 | if (gethostname(hostbuf, size) < 0) | |
772 | { | |
773 | (void) strcpy(hostbuf, "localhost"); | |
774 | } | |
775 | hp = gethostbyname(hostbuf); | |
776 | if (hp != NULL) | |
777 | { | |
78ed81a3 | 778 | (void) strncpy(hostbuf, hp->h_name, size - 1); |
779 | hostbuf[size - 1] = '\0'; | |
780 | ||
781 | if (hp->h_addrtype == AF_INET && hp->h_length == 4) | |
782 | { | |
783 | register int i; | |
784 | ||
785 | for (i = 0; i < MAXIPADDR; i++) | |
786 | { | |
787 | if (hp->h_addr_list[i] == NULL) | |
788 | break; | |
789 | MyIpAddrs[i].s_addr = *(u_long *) hp->h_addr_list[i]; | |
790 | } | |
791 | MyIpAddrs[i].s_addr = 0; | |
792 | } | |
793 | ||
15637ed4 RG |
794 | return (hp->h_aliases); |
795 | } | |
796 | else | |
797 | return (NULL); | |
798 | } | |
78ed81a3 | 799 | \f/* |
800 | ** GETAUTHINFO -- get the real host name asociated with a file descriptor | |
801 | ** | |
802 | ** Uses RFC1413 protocol to try to get info from the other end. | |
803 | ** | |
804 | ** Parameters: | |
805 | ** fd -- the descriptor | |
806 | ** | |
807 | ** Returns: | |
808 | ** The user@host information associated with this descriptor. | |
809 | ** | |
810 | ** Side Effects: | |
811 | ** Sets RealHostName to the name of the host at the other end. | |
812 | */ | |
15637ed4 | 813 | |
78ed81a3 | 814 | #ifdef IDENTPROTO |
815 | ||
816 | static jmp_buf CtxAuthTimeout; | |
817 | ||
818 | static | |
819 | authtimeout() | |
820 | { | |
821 | longjmp(CtxAuthTimeout, 1); | |
822 | } | |
823 | ||
824 | #endif | |
825 | ||
826 | char * | |
827 | getauthinfo(fd) | |
828 | int fd; | |
829 | { | |
830 | SOCKADDR fa; | |
831 | int falen; | |
832 | register char *p; | |
833 | #ifdef IDENTPROTO | |
834 | SOCKADDR la; | |
835 | int lalen; | |
836 | register struct servent *sp; | |
837 | int s; | |
838 | int i; | |
839 | EVENT *ev; | |
840 | #endif | |
841 | static char hbuf[MAXNAME * 2 + 2]; | |
842 | extern char *hostnamebyanyaddr(); | |
843 | extern char RealUserName[]; /* main.c */ | |
844 | ||
845 | falen = sizeof fa; | |
846 | if (getpeername(fd, &fa.sa, &falen) < 0 || falen <= 0) | |
847 | { | |
848 | RealHostName = "localhost"; | |
849 | (void) sprintf(hbuf, "%s@localhost", RealUserName); | |
850 | if (tTd(9, 1)) | |
851 | printf("getauthinfo: %s\n", hbuf); | |
852 | return hbuf; | |
853 | } | |
854 | ||
855 | RealHostName = newstr(hostnamebyanyaddr(&fa)); | |
856 | RealHostAddr = fa; | |
857 | ||
858 | #ifdef IDENTPROTO | |
859 | lalen = sizeof la; | |
860 | if (fa.sa.sa_family != AF_INET || | |
861 | getsockname(fd, &la.sa, &lalen) < 0 || lalen <= 0 || | |
862 | la.sa.sa_family != AF_INET) | |
863 | { | |
864 | /* no ident info */ | |
865 | goto noident; | |
866 | } | |
867 | ||
868 | /* create ident query */ | |
869 | (void) sprintf(hbuf, "%d,%d\r\n", | |
870 | ntohs(fa.sin.sin_port), ntohs(la.sin.sin_port)); | |
871 | ||
872 | /* create local address */ | |
873 | bzero(&la, sizeof la); | |
874 | ||
875 | /* create foreign address */ | |
876 | sp = getservbyname("auth", "tcp"); | |
877 | if (sp != NULL) | |
878 | { | |
879 | #ifdef _SCO_unix_ | |
880 | fa.sin.sin_port = htons(sp->s_port); | |
881 | #else | |
882 | fa.sin.sin_port = sp->s_port; | |
883 | #endif | |
884 | } | |
885 | else | |
886 | fa.sin.sin_port = htons(113); | |
887 | ||
888 | s = -1; | |
889 | if (setjmp(CtxAuthTimeout) != 0) | |
890 | { | |
891 | if (s >= 0) | |
892 | (void) close(s); | |
893 | goto noident; | |
894 | } | |
895 | ||
896 | /* put a timeout around the whole thing */ | |
897 | ev = setevent((time_t) 30, authtimeout, 0); | |
898 | ||
899 | /* connect to foreign IDENT server */ | |
900 | s = socket(AF_INET, SOCK_STREAM, 0); | |
901 | if (s < 0) | |
902 | { | |
903 | clrevent(ev); | |
904 | goto noident; | |
905 | } | |
906 | if (connect(s, &fa.sa, sizeof fa.sin) < 0) | |
907 | { | |
908 | closeident: | |
909 | (void) close(s); | |
910 | clrevent(ev); | |
911 | goto noident; | |
912 | } | |
913 | ||
914 | if (tTd(9, 10)) | |
915 | printf("getauthinfo: sent %s", hbuf); | |
916 | ||
917 | /* send query */ | |
918 | if (write(s, hbuf, strlen(hbuf)) < 0) | |
919 | goto closeident; | |
920 | ||
921 | /* get result */ | |
922 | i = read(s, hbuf, sizeof hbuf); | |
923 | (void) close(s); | |
924 | clrevent(ev); | |
925 | if (i <= 0) | |
926 | goto noident; | |
927 | if (hbuf[--i] == '\n' && hbuf[--i] == '\r') | |
928 | i--; | |
929 | hbuf[++i] = '\0'; | |
930 | ||
931 | if (tTd(9, 3)) | |
932 | printf("getauthinfo: got %s\n", hbuf); | |
933 | ||
934 | /* parse result */ | |
935 | p = strchr(hbuf, ':'); | |
936 | if (p == NULL) | |
937 | { | |
938 | /* malformed response */ | |
939 | goto noident; | |
940 | } | |
941 | while (isascii(*++p) && isspace(*p)) | |
942 | continue; | |
943 | if (strncasecmp(p, "userid", 6) != 0) | |
944 | { | |
945 | /* presumably an error string */ | |
946 | goto noident; | |
947 | } | |
948 | p += 6; | |
949 | while (isascii(*p) && isspace(*p)) | |
950 | p++; | |
951 | if (*p++ != ':') | |
952 | { | |
953 | /* either useridxx or malformed response */ | |
954 | goto noident; | |
955 | } | |
956 | ||
957 | /* p now points to the OSTYPE field */ | |
958 | p = strchr(p, ':'); | |
959 | if (p == NULL) | |
960 | { | |
961 | /* malformed response */ | |
962 | goto noident; | |
963 | } | |
964 | ||
965 | /* 1413 says don't do this -- but it's broken otherwise */ | |
966 | while (isascii(*++p) && isspace(*p)) | |
967 | continue; | |
968 | ||
969 | /* p now points to the authenticated name */ | |
970 | (void) sprintf(hbuf, "%s@%s", p, RealHostName); | |
971 | goto finish; | |
972 | ||
973 | #endif /* IDENTPROTO */ | |
974 | ||
975 | noident: | |
976 | (void) strcpy(hbuf, RealHostName); | |
977 | ||
978 | finish: | |
979 | if (RealHostName[0] != '[') | |
980 | { | |
981 | p = &hbuf[strlen(hbuf)]; | |
982 | (void) sprintf(p, " [%s]", anynet_ntoa(&RealHostAddr)); | |
983 | } | |
984 | if (tTd(9, 1)) | |
985 | printf("getauthinfo: %s\n", hbuf); | |
986 | return hbuf; | |
987 | } | |
988 | \f/* | |
989 | ** HOST_MAP_LOOKUP -- turn a hostname into canonical form | |
990 | ** | |
991 | ** Parameters: | |
992 | ** map -- a pointer to this map (unused). | |
993 | ** name -- the (presumably unqualified) hostname. | |
994 | ** av -- unused -- for compatibility with other mapping | |
995 | ** functions. | |
996 | ** statp -- an exit status (out parameter) -- set to | |
997 | ** EX_TEMPFAIL if the name server is unavailable. | |
998 | ** | |
999 | ** Returns: | |
1000 | ** The mapping, if found. | |
1001 | ** NULL if no mapping found. | |
1002 | ** | |
1003 | ** Side Effects: | |
1004 | ** Looks up the host specified in hbuf. If it is not | |
1005 | ** the canonical name for that host, return the canonical | |
1006 | ** name. | |
1007 | */ | |
1008 | ||
1009 | char * | |
1010 | host_map_lookup(map, name, av, statp) | |
1011 | MAP *map; | |
1012 | char *name; | |
1013 | char **av; | |
1014 | int *statp; | |
15637ed4 RG |
1015 | { |
1016 | register struct hostent *hp; | |
1017 | u_long in_addr; | |
78ed81a3 | 1018 | char *cp; |
1019 | int i; | |
1020 | register STAB *s; | |
1021 | char hbuf[MAXNAME]; | |
1022 | extern struct hostent *gethostbyaddr(); | |
1023 | extern int h_errno; | |
1024 | ||
1025 | /* | |
1026 | ** See if we have already looked up this name. If so, just | |
1027 | ** return it. | |
1028 | */ | |
1029 | ||
1030 | s = stab(name, ST_NAMECANON, ST_ENTER); | |
1031 | if (bitset(NCF_VALID, s->s_namecanon.nc_flags)) | |
1032 | { | |
1033 | if (tTd(9, 1)) | |
1034 | printf("host_map_lookup(%s) => CACHE %s\n", | |
1035 | name, s->s_namecanon.nc_cname); | |
1036 | errno = s->s_namecanon.nc_errno; | |
1037 | h_errno = s->s_namecanon.nc_herrno; | |
1038 | *statp = s->s_namecanon.nc_stat; | |
1039 | return s->s_namecanon.nc_cname; | |
1040 | } | |
15637ed4 RG |
1041 | |
1042 | /* | |
78ed81a3 | 1043 | ** If first character is a bracket, then it is an address |
1044 | ** lookup. Address is copied into a temporary buffer to | |
1045 | ** strip the brackets and to preserve name if address is | |
1046 | ** unknown. | |
1047 | */ | |
1048 | ||
1049 | if (*name != '[') | |
1050 | { | |
1051 | extern bool getcanonname(); | |
1052 | ||
1053 | if (tTd(9, 1)) | |
1054 | printf("host_map_lookup(%s) => ", name); | |
1055 | s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ | |
1056 | (void) strcpy(hbuf, name); | |
1057 | if (getcanonname(hbuf, sizeof hbuf - 1)) | |
1058 | { | |
1059 | if (tTd(9, 1)) | |
1060 | printf("%s\n", hbuf); | |
1061 | cp = map_rewrite(map, hbuf, strlen(hbuf), av); | |
1062 | s->s_namecanon.nc_cname = newstr(cp); | |
1063 | return cp; | |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | register struct hostent *hp; | |
1068 | ||
1069 | if (tTd(9, 1)) | |
1070 | printf("FAIL (%d)\n", h_errno); | |
1071 | s->s_namecanon.nc_errno = errno; | |
1072 | s->s_namecanon.nc_herrno = h_errno; | |
1073 | switch (h_errno) | |
1074 | { | |
1075 | case TRY_AGAIN: | |
1076 | if (UseNameServer) | |
1077 | { | |
1078 | char *msg = "Recipient domain nameserver timed out"; | |
1079 | ||
1080 | message(msg); | |
1081 | if (CurEnv->e_message == NULL) | |
1082 | CurEnv->e_message = newstr(msg); | |
1083 | } | |
1084 | *statp = EX_TEMPFAIL; | |
1085 | break; | |
1086 | ||
1087 | case HOST_NOT_FOUND: | |
1088 | *statp = EX_NOHOST; | |
1089 | break; | |
1090 | ||
1091 | case NO_RECOVERY: | |
1092 | *statp = EX_SOFTWARE; | |
1093 | break; | |
1094 | ||
1095 | default: | |
1096 | *statp = EX_UNAVAILABLE; | |
1097 | break; | |
1098 | } | |
1099 | s->s_namecanon.nc_stat = *statp; | |
1100 | if (*statp != EX_TEMPFAIL || UseNameServer) | |
1101 | return NULL; | |
1102 | ||
1103 | /* | |
1104 | ** Try to look it up in /etc/hosts | |
1105 | */ | |
1106 | ||
1107 | hp = gethostbyname(name); | |
1108 | if (hp == NULL) | |
1109 | { | |
1110 | /* no dice there either */ | |
1111 | s->s_namecanon.nc_stat = *statp = EX_NOHOST; | |
1112 | return NULL; | |
1113 | } | |
1114 | ||
1115 | s->s_namecanon.nc_stat = *statp = EX_OK; | |
1116 | cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); | |
1117 | s->s_namecanon.nc_cname = newstr(cp); | |
1118 | return cp; | |
1119 | } | |
1120 | } | |
1121 | if ((cp = strchr(name, ']')) == NULL) | |
1122 | return (NULL); | |
15637ed4 | 1123 | *cp = '\0'; |
78ed81a3 | 1124 | in_addr = inet_addr(&name[1]); |
1125 | ||
1126 | /* check to see if this is one of our addresses */ | |
1127 | for (i = 0; MyIpAddrs[i].s_addr != 0; i++) | |
1128 | { | |
1129 | if (MyIpAddrs[i].s_addr == in_addr) | |
1130 | { | |
1131 | return map_rewrite(map, MyHostName, strlen(MyHostName), av); | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* nope -- ask the name server */ | |
15637ed4 | 1136 | hp = gethostbyaddr((char *)&in_addr, sizeof(struct in_addr), AF_INET); |
78ed81a3 | 1137 | s->s_namecanon.nc_errno = errno; |
1138 | s->s_namecanon.nc_herrno = h_errno; | |
1139 | s->s_namecanon.nc_flags |= NCF_VALID; /* will be soon */ | |
15637ed4 | 1140 | if (hp == NULL) |
78ed81a3 | 1141 | { |
1142 | s->s_namecanon.nc_stat = *statp = EX_NOHOST; | |
1143 | return (NULL); | |
1144 | } | |
1145 | ||
1146 | /* found a match -- copy out */ | |
1147 | cp = map_rewrite(map, hp->h_name, strlen(hp->h_name), av); | |
1148 | s->s_namecanon.nc_stat = *statp = EX_OK; | |
1149 | s->s_namecanon.nc_cname = newstr(cp); | |
1150 | return cp; | |
1151 | } | |
1152 | \f/* | |
1153 | ** ANYNET_NTOA -- convert a network address to printable form. | |
1154 | ** | |
1155 | ** Parameters: | |
1156 | ** sap -- a pointer to a sockaddr structure. | |
1157 | ** | |
1158 | ** Returns: | |
1159 | ** A printable version of that sockaddr. | |
1160 | */ | |
1161 | ||
1162 | char * | |
1163 | anynet_ntoa(sap) | |
1164 | register SOCKADDR *sap; | |
1165 | { | |
1166 | register char *bp; | |
1167 | register char *ap; | |
1168 | int l; | |
1169 | static char buf[80]; | |
1170 | ||
1171 | /* check for null/zero family */ | |
1172 | if (sap == NULL) | |
1173 | return "NULLADDR"; | |
1174 | if (sap->sa.sa_family == 0) | |
1175 | return "0"; | |
1176 | ||
1177 | #ifdef NETINET | |
1178 | if (sap->sa.sa_family == AF_INET) | |
1179 | { | |
1180 | extern char *inet_ntoa(); | |
1181 | ||
1182 | return inet_ntoa(((struct sockaddr_in *) sap)->sin_addr); | |
1183 | } | |
1184 | #endif | |
1185 | ||
1186 | /* unknown family -- just dump bytes */ | |
1187 | (void) sprintf(buf, "Family %d: ", sap->sa.sa_family); | |
1188 | bp = &buf[strlen(buf)]; | |
1189 | ap = sap->sa.sa_data; | |
1190 | for (l = sizeof sap->sa.sa_data; --l >= 0; ) | |
1191 | { | |
1192 | (void) sprintf(bp, "%02x:", *ap++ & 0377); | |
1193 | bp += 3; | |
1194 | } | |
1195 | *--bp = '\0'; | |
1196 | return buf; | |
1197 | } | |
1198 | \f/* | |
1199 | ** HOSTNAMEBYANYADDR -- return name of host based on address | |
1200 | ** | |
1201 | ** Parameters: | |
1202 | ** sap -- SOCKADDR pointer | |
1203 | ** | |
1204 | ** Returns: | |
1205 | ** text representation of host name. | |
1206 | ** | |
1207 | ** Side Effects: | |
1208 | ** none. | |
1209 | */ | |
1210 | ||
1211 | char * | |
1212 | hostnamebyanyaddr(sap) | |
1213 | register SOCKADDR *sap; | |
1214 | { | |
1215 | register struct hostent *hp; | |
1216 | ||
1217 | #ifdef NAMED_BIND | |
1218 | int saveretry; | |
1219 | ||
1220 | /* shorten name server timeout to avoid higher level timeouts */ | |
1221 | saveretry = _res.retry; | |
1222 | _res.retry = 3; | |
1223 | #endif /* NAMED_BIND */ | |
1224 | ||
1225 | switch (sap->sa.sa_family) | |
1226 | { | |
1227 | #ifdef NETINET | |
1228 | case AF_INET: | |
1229 | hp = gethostbyaddr((char *) &sap->sin.sin_addr, | |
1230 | sizeof sap->sin.sin_addr, | |
1231 | AF_INET); | |
1232 | break; | |
1233 | #endif | |
1234 | ||
1235 | #ifdef NETISO | |
1236 | case AF_ISO: | |
1237 | hp = gethostbyaddr((char *) &sap->siso.siso_addr, | |
1238 | sizeof sap->siso.siso_addr, | |
1239 | AF_ISO); | |
1240 | break; | |
1241 | #endif | |
1242 | ||
1243 | default: | |
1244 | hp = gethostbyaddr(sap->sa.sa_data, | |
1245 | sizeof sap->sa.sa_data, | |
1246 | sap->sa.sa_family); | |
1247 | break; | |
1248 | } | |
1249 | ||
1250 | #ifdef NAMED_BIND | |
1251 | _res.retry = saveretry; | |
1252 | #endif /* NAMED_BIND */ | |
1253 | ||
1254 | if (hp != NULL) | |
1255 | return hp->h_name; | |
1256 | else | |
1257 | { | |
1258 | /* produce a dotted quad */ | |
1259 | static char buf[512]; | |
1260 | ||
1261 | (void) sprintf(buf, "[%s]", anynet_ntoa(sap)); | |
1262 | return buf; | |
1263 | } | |
15637ed4 RG |
1264 | } |
1265 | ||
78ed81a3 | 1266 | # else /* DAEMON */ |
15637ed4 RG |
1267 | /* code for systems without sophisticated networking */ |
1268 | ||
1269 | /* | |
1270 | ** MYHOSTNAME -- stub version for case of no daemon code. | |
1271 | ** | |
1272 | ** Can't convert to upper case here because might be a UUCP name. | |
1273 | ** | |
1274 | ** Mark, you can change this to be anything you want...... | |
1275 | */ | |
1276 | ||
1277 | char ** | |
1278 | myhostname(hostbuf, size) | |
1279 | char hostbuf[]; | |
1280 | int size; | |
1281 | { | |
1282 | register FILE *f; | |
1283 | ||
1284 | hostbuf[0] = '\0'; | |
1285 | f = fopen("/usr/include/whoami", "r"); | |
1286 | if (f != NULL) | |
1287 | { | |
1288 | (void) fgets(hostbuf, size, f); | |
1289 | fixcrlf(hostbuf, TRUE); | |
1290 | (void) fclose(f); | |
1291 | } | |
1292 | return (NULL); | |
1293 | } | |
1294 | \f/* | |
78ed81a3 | 1295 | ** GETAUTHINFO -- get the real host name asociated with a file descriptor |
1296 | ** | |
1297 | ** Parameters: | |
1298 | ** fd -- the descriptor | |
1299 | ** | |
1300 | ** Returns: | |
1301 | ** The host name associated with this descriptor, if it can | |
1302 | ** be determined. | |
1303 | ** NULL otherwise. | |
1304 | ** | |
1305 | ** Side Effects: | |
1306 | ** none | |
1307 | */ | |
1308 | ||
1309 | char * | |
1310 | getauthinfo(fd) | |
1311 | int fd; | |
1312 | { | |
1313 | return NULL; | |
1314 | } | |
1315 | \f/* | |
15637ed4 RG |
1316 | ** MAPHOSTNAME -- turn a hostname into canonical form |
1317 | ** | |
1318 | ** Parameters: | |
78ed81a3 | 1319 | ** map -- a pointer to the database map. |
1320 | ** name -- a buffer containing a hostname. | |
1321 | ** avp -- a pointer to a (cf file defined) argument vector. | |
1322 | ** statp -- an exit status (out parameter). | |
15637ed4 RG |
1323 | ** |
1324 | ** Returns: | |
78ed81a3 | 1325 | ** mapped host name |
1326 | ** FALSE otherwise. | |
15637ed4 RG |
1327 | ** |
1328 | ** Side Effects: | |
78ed81a3 | 1329 | ** Looks up the host specified in name. If it is not |
15637ed4 RG |
1330 | ** the canonical name for that host, replace it with |
1331 | ** the canonical name. If the name is unknown, or it | |
1332 | ** is already the canonical name, leave it unchanged. | |
1333 | */ | |
1334 | ||
1335 | /*ARGSUSED*/ | |
78ed81a3 | 1336 | char * |
1337 | host_map_lookup(map, name, avp, statp) | |
1338 | MAP *map; | |
1339 | char *name; | |
1340 | char **avp; | |
1341 | char *statp; | |
15637ed4 | 1342 | { |
78ed81a3 | 1343 | register struct hostent *hp; |
1344 | ||
1345 | hp = gethostbyname(name); | |
1346 | if (hp != NULL) | |
1347 | return hp->h_name; | |
1348 | *statp = EX_NOHOST; | |
1349 | return NULL; | |
15637ed4 RG |
1350 | } |
1351 | ||
78ed81a3 | 1352 | #endif /* DAEMON */ |