Commit | Line | Data |
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b2a81223 | 1 | /* |
dc45ba8c | 2 | * Copyright (c) 1983 Eric P. Allman |
bee79b64 KB |
3 | * Copyright (c) 1988 Regents of the University of California. |
4 | * All rights reserved. | |
5 | * | |
417f7a11 | 6 | * %sccs.include.redist.c% |
bee79b64 | 7 | */ |
b2a81223 DF |
8 | |
9 | #ifndef lint | |
aa102c71 | 10 | static char sccsid[] = "@(#)recipient.c 6.7 (Berkeley) %G%"; |
bee79b64 | 11 | #endif /* not lint */ |
b2a81223 | 12 | |
611050b6 KB |
13 | # include <sys/types.h> |
14 | # include <sys/stat.h> | |
f9344236 | 15 | # include <fcntl.h> |
6eefe4f6 | 16 | # include <pwd.h> |
6eefe4f6 | 17 | # include "sendmail.h" |
6eefe4f6 | 18 | |
6eefe4f6 | 19 | /* |
811a6cf3 | 20 | ** SENDTOLIST -- Designate a send list. |
6eefe4f6 EA |
21 | ** |
22 | ** The parameter is a comma-separated list of people to send to. | |
23 | ** This routine arranges to send to all of them. | |
24 | ** | |
abae7b2d EA |
25 | ** The `ctladdr' is the address that expanded to be this one, |
26 | ** e.g., in an alias expansion. This is used for a number of | |
27 | ** purposed, most notably inheritance of uid/gid for protection | |
28 | ** purposes. It is also used to detect self-reference in group | |
29 | ** expansions and the like. | |
30 | ** | |
6eefe4f6 EA |
31 | ** Parameters: |
32 | ** list -- the send list. | |
1bf7c76b EA |
33 | ** ctladdr -- the address template for the person to |
34 | ** send to -- effective uid/gid are important. | |
d4f42161 EA |
35 | ** This is typically the alias that caused this |
36 | ** expansion. | |
37 | ** sendq -- a pointer to the head of a queue to put | |
38 | ** these people into. | |
abae7b2d | 39 | ** qflags -- special flags to set in the q_flags field. |
6eefe4f6 EA |
40 | ** |
41 | ** Returns: | |
abae7b2d | 42 | ** pointer to chain of addresses. |
6eefe4f6 EA |
43 | ** |
44 | ** Side Effects: | |
45 | ** none. | |
46 | */ | |
47 | ||
48 | # define MAXRCRSN 10 | |
49 | ||
abae7b2d EA |
50 | ADDRESS * |
51 | sendto(list, copyf, ctladdr, qflags) | |
6eefe4f6 | 52 | char *list; |
1bf7c76b | 53 | ADDRESS *ctladdr; |
4e5e456f | 54 | ADDRESS **sendq; |
a4076aed | 55 | register ENVELOPE *e; |
abae7b2d | 56 | u_short qflags; |
6eefe4f6 EA |
57 | { |
58 | register char *p; | |
7b955214 | 59 | register ADDRESS *al; /* list of addresses to send to */ |
92f12b98 | 60 | bool firstone; /* set on first address sent */ |
331b7c9f | 61 | bool selfref; /* set if this list includes ctladdr */ |
d3f52e20 | 62 | char delimiter; /* the address delimiter */ |
abae7b2d EA |
63 | ADDRESS *sibl; /* sibling pointer in tree */ |
64 | ADDRESS *prev; /* previous sibling */ | |
d6b27179 | 65 | |
9678c96d | 66 | if (tTd(25, 1)) |
331b7c9f EA |
67 | { |
68 | printf("sendto: %s\n ctladdr=", list); | |
69 | printaddr(ctladdr, FALSE); | |
70 | } | |
6eefe4f6 | 71 | |
7b955214 | 72 | /* heuristic to determine old versus new style addresses */ |
a2983993 | 73 | if (ctladdr == NULL && |
f3d8f6d6 EA |
74 | (strchr(list, ',') != NULL || strchr(list, ';') != NULL || |
75 | strchr(list, '<') != NULL || strchr(list, '(') != NULL)) | |
a4076aed | 76 | e->e_flags &= ~EF_OLDSTYLE; |
d3f52e20 | 77 | delimiter = ' '; |
a4076aed | 78 | if (!bitset(EF_OLDSTYLE, e->e_flags) || ctladdr != NULL) |
d3f52e20 | 79 | delimiter = ','; |
7b955214 | 80 | |
92f12b98 | 81 | firstone = TRUE; |
331b7c9f | 82 | selfref = FALSE; |
d6b27179 | 83 | al = NULL; |
7b955214 | 84 | |
506fc377 | 85 | for (p = list; *p != '\0'; ) |
6eefe4f6 | 86 | { |
506fc377 EA |
87 | register ADDRESS *a; |
88 | extern char *DelimChar; /* defined in prescan */ | |
6eefe4f6 EA |
89 | |
90 | /* parse the address */ | |
506fc377 EA |
91 | while (isspace(*p) || *p == ',') |
92 | p++; | |
a4076aed | 93 | a = parseaddr(p, (ADDRESS *) NULL, 1, delimiter, e); |
506fc377 | 94 | p = DelimChar; |
b9fadd5b EA |
95 | if (a == NULL) |
96 | continue; | |
d6b27179 | 97 | a->q_next = al; |
1bf7c76b | 98 | a->q_alias = ctladdr; |
abae7b2d EA |
99 | if (ctladdr != NULL) |
100 | a->q_flags |= ctladdr->q_flags & ~QPRIMARY; | |
101 | a->q_flags |= qflags; | |
331b7c9f EA |
102 | |
103 | /* see if this should be marked as a primary address */ | |
92f12b98 | 104 | if (ctladdr == NULL || |
506fc377 | 105 | (firstone && *p == '\0' && bitset(QPRIMARY, ctladdr->q_flags))) |
92f12b98 | 106 | a->q_flags |= QPRIMARY; |
331b7c9f | 107 | |
7338e3d4 | 108 | if (ctladdr != NULL && sameaddr(ctladdr, a)) |
331b7c9f | 109 | selfref = TRUE; |
78bbbc48 | 110 | al = a; |
92f12b98 | 111 | firstone = FALSE; |
d6b27179 EA |
112 | } |
113 | ||
331b7c9f EA |
114 | /* if this alias doesn't include itself, delete ctladdr */ |
115 | if (!selfref && ctladdr != NULL) | |
78bbbc48 EA |
116 | { |
117 | if (tTd(25, 5)) | |
118 | { | |
119 | printf("sendtolist: QDONTSEND "); | |
120 | printaddr(ctladdr, FALSE); | |
121 | } | |
331b7c9f | 122 | ctladdr->q_flags |= QDONTSEND; |
78bbbc48 | 123 | } |
331b7c9f | 124 | |
d6b27179 | 125 | /* arrange to send to everyone on the local send list */ |
abae7b2d EA |
126 | prev = sibl = NULL; |
127 | if (ctladdr != NULL) | |
128 | prev = ctladdr->q_child; | |
d6b27179 EA |
129 | while (al != NULL) |
130 | { | |
131 | register ADDRESS *a = al; | |
abae7b2d | 132 | extern ADDRESS *recipient(); |
d344c0b7 | 133 | extern ADDRESS *recipient(); |
d6b27179 EA |
134 | |
135 | al = a->q_next; | |
abae7b2d EA |
136 | sibl = recipient(a); |
137 | if (sibl != NULL) | |
138 | { | |
139 | extern ADDRESS *addrref(); | |
140 | ||
141 | /* inherit full name */ | |
142 | if (sibl->q_fullname == NULL && ctladdr != NULL) | |
143 | sibl->q_fullname = ctladdr->q_fullname; | |
144 | ||
145 | /* link tree together (but only if the node is new) */ | |
146 | if (sibl == a) | |
147 | { | |
148 | sibl->q_sibling = prev; | |
149 | prev = sibl; | |
150 | } | |
151 | } | |
6eefe4f6 | 152 | } |
d6b27179 | 153 | |
a4076aed | 154 | e->e_to = NULL; |
abae7b2d EA |
155 | if (ctladdr != NULL) |
156 | ctladdr->q_child = prev; | |
157 | return (prev); | |
158 | } | |
159 | \f/* | |
160 | ** ADDRREF -- return pointer to address that references another address. | |
161 | ** | |
162 | ** Parameters: | |
163 | ** a -- address to check. | |
164 | ** r -- reference to find. | |
165 | ** | |
166 | ** Returns: | |
167 | ** address of node in tree rooted at 'a' that references | |
168 | ** 'r'. | |
169 | ** NULL if no such node exists. | |
170 | ** | |
171 | ** Side Effects: | |
172 | ** none. | |
173 | */ | |
174 | ||
175 | ADDRESS * | |
176 | addrref(a, r) | |
177 | register ADDRESS *a; | |
178 | register ADDRESS *r; | |
179 | { | |
180 | register ADDRESS *q; | |
181 | ||
182 | while (a != NULL) | |
183 | { | |
184 | if (a->q_child == r || a->q_sibling == r) | |
185 | return (a); | |
186 | q = addrref(a->q_child, r); | |
187 | if (q != NULL) | |
188 | return (q); | |
189 | a = a->q_sibling; | |
190 | } | |
191 | return (NULL); | |
6eefe4f6 EA |
192 | } |
193 | \f/* | |
194 | ** RECIPIENT -- Designate a message recipient | |
195 | ** | |
196 | ** Saves the named person for future mailing. | |
197 | ** | |
198 | ** Parameters: | |
199 | ** a -- the (preparsed) address header for the recipient. | |
d4f42161 EA |
200 | ** sendq -- a pointer to the head of a queue to put the |
201 | ** recipient in. Duplicate supression is done | |
202 | ** in this queue. | |
78bbbc48 | 203 | ** e -- the current envelope. |
6eefe4f6 EA |
204 | ** |
205 | ** Returns: | |
abae7b2d | 206 | ** pointer to address actually inserted in send list. |
6eefe4f6 EA |
207 | ** |
208 | ** Side Effects: | |
209 | ** none. | |
210 | */ | |
211 | ||
0df908a9 | 212 | extern ADDRESS *getctladdr(); |
ce46a48a | 213 | extern char *RcptLogFile; |
0df908a9 | 214 | |
d344c0b7 | 215 | ADDRESS * |
abae7b2d | 216 | ADDRESS * |
a4076aed | 217 | recipient(a, sendq, e) |
6eefe4f6 | 218 | register ADDRESS *a; |
d4f42161 | 219 | register ADDRESS **sendq; |
a4076aed | 220 | register ENVELOPE *e; |
6eefe4f6 EA |
221 | { |
222 | register ADDRESS *q; | |
74c5fe7c | 223 | ADDRESS **pq; |
6eefe4f6 | 224 | register struct mailer *m; |
98f46225 EA |
225 | register char *p; |
226 | bool quoted = FALSE; /* set if the addr has a quote bit */ | |
7f0fd60b | 227 | int findusercount = 0; |
98f46225 | 228 | char buf[MAXNAME]; /* unquoted image of the user name */ |
ed45aae1 | 229 | extern bool safefile(); |
6eefe4f6 | 230 | |
a4076aed | 231 | e->e_to = a->q_paddr; |
179c1218 | 232 | m = a->q_mailer; |
6eefe4f6 | 233 | errno = 0; |
9678c96d | 234 | if (tTd(26, 1)) |
331b7c9f EA |
235 | { |
236 | printf("\nrecipient: "); | |
237 | printaddr(a, FALSE); | |
238 | } | |
6eefe4f6 EA |
239 | |
240 | /* break aliasing loops */ | |
241 | if (AliasLevel > MAXRCRSN) | |
242 | { | |
243 | usrerr("aliasing/forwarding loop broken"); | |
abae7b2d | 244 | return (NULL); |
6eefe4f6 EA |
245 | } |
246 | ||
247 | /* | |
ed45aae1 | 248 | ** Finish setting up address structure. |
6eefe4f6 EA |
249 | */ |
250 | ||
0fe3917f | 251 | /* set the queue timeout */ |
ed45aae1 EA |
252 | a->q_timeout = TimeOut; |
253 | ||
0fe3917f EA |
254 | /* map user & host to lower case if requested on non-aliases */ |
255 | if (a->q_alias == NULL) | |
256 | loweraddr(a); | |
257 | ||
258 | /* get unquoted user for file, program or user.name check */ | |
98f46225 EA |
259 | (void) strcpy(buf, a->q_user); |
260 | for (p = buf; *p != '\0' && !quoted; p++) | |
261 | { | |
3eb4fac4 | 262 | if (*p == '\\') |
98f46225 EA |
263 | quoted = TRUE; |
264 | } | |
85c61679 | 265 | stripquotes(buf); |
98f46225 | 266 | |
98e5062b | 267 | /* check for direct mailing to restricted mailers */ |
78bbbc48 | 268 | if (a->q_alias == NULL && m == ProgMailer) |
6eefe4f6 | 269 | { |
98e5062b EA |
270 | a->q_flags |= QDONTSEND|QBADADDR; |
271 | usrerr("Cannot mail directly to programs", m->m_name); | |
6eefe4f6 EA |
272 | } |
273 | ||
274 | /* | |
b9ca6d11 EA |
275 | ** Look up this person in the recipient list. |
276 | ** If they are there already, return, otherwise continue. | |
277 | ** If the list is empty, just add it. Notice the cute | |
278 | ** hack to make from addresses suppress things correctly: | |
279 | ** the QDONTSEND bit will be set in the send list. | |
280 | ** [Please note: the emphasis is on "hack."] | |
6eefe4f6 EA |
281 | */ |
282 | ||
d4f42161 | 283 | for (pq = sendq; (q = *pq) != NULL; pq = &q->q_next) |
6eefe4f6 | 284 | { |
7338e3d4 | 285 | if (!ForceMail && sameaddr(q, a)) |
6eefe4f6 | 286 | { |
9678c96d | 287 | if (tTd(26, 1)) |
331b7c9f EA |
288 | { |
289 | printf("%s in sendq: ", a->q_paddr); | |
290 | printaddr(q, FALSE); | |
291 | } | |
abae7b2d | 292 | if (Verbose && !bitset(QDONTSEND|QPSEUDO, a->q_flags)) |
d6b27179 | 293 | message(Arpa_Info, "duplicate suppressed"); |
92f12b98 EA |
294 | if (!bitset(QPRIMARY, q->q_flags)) |
295 | q->q_flags |= a->q_flags; | |
abae7b2d EA |
296 | if (!bitset(QPSEUDO, a->q_flags)) |
297 | q->q_flags &= ~QPSEUDO; | |
298 | return (q); | |
6eefe4f6 | 299 | } |
6eefe4f6 | 300 | } |
74c5fe7c EA |
301 | |
302 | /* add address on list */ | |
303 | *pq = a; | |
6eefe4f6 EA |
304 | a->q_next = NULL; |
305 | ||
ce46a48a EA |
306 | if (a->q_alias == NULL && RcptLogFile != NULL && |
307 | !bitset(QDONTSEND, a->q_flags)) | |
308 | { | |
309 | static int RcptLogFd = -1; | |
310 | ||
311 | /* | |
312 | ** Log the incoming recipient name before aliasing, | |
313 | ** expanding, forwarding, rewriting, and all that jazz. | |
314 | ** We'll use this to track down out-of-date aliases, | |
315 | ** host names, and so forth. | |
316 | */ | |
317 | ||
318 | if (RcptLogFd < 0) | |
319 | { | |
320 | /* try to open the log file */ | |
321 | RcptLogFd = open(RcptLogFile, O_WRONLY|O_APPEND|O_CREAT, 0666); | |
3e901f38 EA |
322 | if (RcptLogFd >= 0) |
323 | (void) fcntl(RcptLogFd, F_SETFD, 1); | |
ce46a48a EA |
324 | } |
325 | if (RcptLogFd >= 0) | |
326 | { | |
327 | int l = strlen(a->q_paddr); | |
328 | ||
329 | a->q_paddr[l] = '\n'; | |
330 | if (write(RcptLogFd, a->q_paddr, l + 1) < 0) | |
331 | { | |
332 | (void) close(RcptLogFd); | |
333 | RcptLogFd = -1; | |
334 | } | |
335 | a->q_paddr[l] = '\0'; | |
336 | } | |
337 | } | |
338 | ||
6eefe4f6 | 339 | /* |
98e5062b | 340 | ** Alias the name and handle special mailer types. |
6eefe4f6 EA |
341 | */ |
342 | ||
7f0fd60b | 343 | trylocaluser: |
42450b5a EA |
344 | if (tTd(29, 7)) |
345 | printf("at trylocaluser %s\n", a->q_user); | |
346 | ||
98e5062b EA |
347 | if (bitset(QDONTSEND, a->q_flags)) |
348 | return (a); | |
349 | ||
350 | if (m == InclMailer) | |
6eefe4f6 | 351 | { |
98e5062b | 352 | a->q_flags |= QDONTSEND; |
78bbbc48 | 353 | if (a->q_alias == NULL) |
6eefe4f6 | 354 | { |
98e5062b EA |
355 | a->q_flags |= QBADADDR; |
356 | usrerr("Cannot mail directly to :include:s"); | |
6eefe4f6 EA |
357 | } |
358 | else | |
8a12fae4 | 359 | { |
98e5062b EA |
360 | message(Arpa_Info, "including file %s", &a->q_user[9]); |
361 | (void) include(&a->q_user[9], FALSE, a, sendq, e); | |
8a12fae4 | 362 | } |
98e5062b | 363 | } |
6e99f903 | 364 | else if (m == FileMailer) |
6eefe4f6 | 365 | { |
a0554f81 EA |
366 | struct stat stb; |
367 | extern bool writable(); | |
6eefe4f6 | 368 | |
f3d8f6d6 | 369 | p = strrchr(buf, '/'); |
d13779b1 | 370 | /* check if writable or creatable */ |
78bbbc48 | 371 | if (a->q_alias == NULL && !QueueRun) |
6eefe4f6 | 372 | { |
d13779b1 EA |
373 | a->q_flags |= QDONTSEND|QBADADDR; |
374 | usrerr("Cannot mail directly to files"); | |
375 | } | |
376 | else if ((stat(buf, &stb) >= 0) ? (!writable(&stb)) : | |
377 | (*p = '\0', !safefile(buf, getruid(), S_IWRITE|S_IEXEC))) | |
378 | { | |
379 | a->q_flags |= QBADADDR; | |
a4076aed | 380 | giveresponse(EX_CANTCREAT, m, e); |
d13779b1 | 381 | } |
d13779b1 EA |
382 | } |
383 | ||
98e5062b | 384 | if (m != LocalMailer) |
6e99f903 EA |
385 | { |
386 | if (!bitset(QDONTSEND, a->q_flags)) | |
387 | e->e_nrcpts++; | |
98e5062b | 388 | return (a); |
6e99f903 | 389 | } |
98e5062b EA |
390 | |
391 | /* try aliasing */ | |
392 | alias(a, sendq, e); | |
393 | ||
394 | # ifdef USERDB | |
395 | /* if not aliased, look it up in the user database */ | |
396 | if (!bitset(QDONTSEND|QNOTREMOTE, a->q_flags)) | |
397 | { | |
398 | extern int udbexpand(); | |
399 | ||
400 | if (udbexpand(a, sendq, e) == EX_TEMPFAIL) | |
401 | { | |
402 | a->q_flags |= QQUEUEUP; | |
403 | if (e->e_message == NULL) | |
404 | e->e_message = newstr("Deferred: user database error"); | |
405 | # ifdef LOG | |
406 | if (LogLevel > 3) | |
407 | syslog(LOG_INFO, "%s: deferred: udbexpand", | |
408 | e->e_id); | |
409 | # endif | |
410 | message(Arpa_Info, "queued (user database error)"); | |
6e99f903 | 411 | e->e_nrcpts++; |
98e5062b EA |
412 | return (a); |
413 | } | |
414 | } | |
415 | # endif | |
416 | ||
417 | /* if it was an alias or a UDB expansion, just return now */ | |
418 | if (bitset(QDONTSEND, a->q_flags)) | |
419 | return (a); | |
420 | ||
d13779b1 EA |
421 | /* |
422 | ** If we have a level two config file, then pass the name through | |
423 | ** Ruleset 5 before sending it off. Ruleset 5 has the right | |
424 | ** to send rewrite it to another mailer. This gives us a hook | |
425 | ** after local aliasing has been done. | |
426 | */ | |
427 | ||
428 | if (tTd(29, 5)) | |
429 | { | |
430 | printf("recipient: testing local? cl=%d, rr5=%x\n\t", | |
431 | ConfigLevel, RewriteRules[5]); | |
432 | printaddr(a, FALSE); | |
433 | } | |
434 | if (!bitset(QNOTREMOTE, a->q_flags) && ConfigLevel >= 2 && | |
435 | RewriteRules[5] != NULL) | |
436 | { | |
a4076aed | 437 | maplocaluser(a, sendq, e); |
d13779b1 EA |
438 | } |
439 | ||
440 | /* | |
441 | ** If it didn't get rewritten to another mailer, go ahead | |
442 | ** and deliver it. | |
443 | */ | |
444 | ||
445 | if (!bitset(QDONTSEND, a->q_flags)) | |
446 | { | |
42450b5a | 447 | auto bool fuzzy; |
d13779b1 EA |
448 | register struct passwd *pw; |
449 | extern struct passwd *finduser(); | |
450 | ||
451 | /* warning -- finduser may trash buf */ | |
42450b5a | 452 | pw = finduser(buf, &fuzzy); |
d13779b1 EA |
453 | if (pw == NULL) |
454 | { | |
455 | a->q_flags |= QBADADDR; | |
a4076aed | 456 | giveresponse(EX_NOUSER, m, e); |
6eefe4f6 EA |
457 | } |
458 | else | |
459 | { | |
d13779b1 | 460 | char nbuf[MAXNAME]; |
ff3e3c1c | 461 | |
42450b5a | 462 | if (fuzzy) |
6eefe4f6 | 463 | { |
7f0fd60b | 464 | /* name was a fuzzy match */ |
d13779b1 | 465 | a->q_user = newstr(pw->pw_name); |
7f0fd60b EA |
466 | if (findusercount++ > 3) |
467 | { | |
468 | usrerr("aliasing/forwarding loop for %s broken", | |
469 | pw->pw_name); | |
470 | return (a); | |
471 | } | |
472 | ||
473 | /* see if it aliases */ | |
d13779b1 | 474 | (void) strcpy(buf, pw->pw_name); |
7f0fd60b | 475 | goto trylocaluser; |
6eefe4f6 | 476 | } |
d13779b1 EA |
477 | a->q_home = newstr(pw->pw_dir); |
478 | a->q_uid = pw->pw_uid; | |
479 | a->q_gid = pw->pw_gid; | |
480 | a->q_flags |= QGOODUID; | |
481 | buildfname(pw->pw_gecos, pw->pw_name, nbuf); | |
482 | if (nbuf[0] != '\0') | |
483 | a->q_fullname = newstr(nbuf); | |
484 | if (!quoted) | |
a4076aed | 485 | forward(a, sendq, e); |
6eefe4f6 EA |
486 | } |
487 | } | |
6e99f903 EA |
488 | if (!bitset(QDONTSEND, a->q_flags)) |
489 | e->e_nrcpts++; | |
d344c0b7 | 490 | return (a); |
abae7b2d EA |
491 | |
492 | return (a); | |
6eefe4f6 EA |
493 | } |
494 | \f/* | |
ff3e3c1c EA |
495 | ** FINDUSER -- find the password entry for a user. |
496 | ** | |
497 | ** This looks a lot like getpwnam, except that it may want to | |
498 | ** do some fancier pattern matching in /etc/passwd. | |
499 | ** | |
7338e3d4 EA |
500 | ** This routine contains most of the time of many sendmail runs. |
501 | ** It deserves to be optimized. | |
502 | ** | |
ff3e3c1c EA |
503 | ** Parameters: |
504 | ** name -- the name to match against. | |
42450b5a EA |
505 | ** fuzzyp -- an outarg that is set to TRUE if this entry |
506 | ** was found using the fuzzy matching algorithm; | |
507 | ** set to FALSE otherwise. | |
ff3e3c1c EA |
508 | ** |
509 | ** Returns: | |
510 | ** A pointer to a pw struct. | |
511 | ** NULL if name is unknown or ambiguous. | |
512 | ** | |
513 | ** Side Effects: | |
29c33ff6 | 514 | ** may modify name. |
ff3e3c1c EA |
515 | */ |
516 | ||
517 | struct passwd * | |
42450b5a | 518 | finduser(name, fuzzyp) |
ff3e3c1c | 519 | char *name; |
42450b5a | 520 | bool *fuzzyp; |
ff3e3c1c | 521 | { |
2b5e3c25 | 522 | register struct passwd *pw; |
29c33ff6 | 523 | register char *p; |
f74d8dce EA |
524 | extern struct passwd *getpwent(); |
525 | extern struct passwd *getpwnam(); | |
29c33ff6 | 526 | |
42450b5a EA |
527 | if (tTd(29, 4)) |
528 | printf("finduser(%s): ", name); | |
529 | ||
639d8b98 | 530 | /* map upper => lower case */ |
29c33ff6 EA |
531 | for (p = name; *p != '\0'; p++) |
532 | { | |
639d8b98 | 533 | if (isascii(*p) && isupper(*p)) |
577bce94 | 534 | *p = tolower(*p); |
29c33ff6 | 535 | } |
42450b5a | 536 | *fuzzyp = FALSE; |
ff3e3c1c | 537 | |
639d8b98 | 538 | /* look up this login name using fast path */ |
77b16ff1 | 539 | if ((pw = getpwnam(name)) != NULL) |
42450b5a EA |
540 | { |
541 | if (tTd(29, 4)) | |
542 | printf("found (non-fuzzy)\n"); | |
77b16ff1 | 543 | return (pw); |
42450b5a | 544 | } |
77b16ff1 | 545 | |
7f0fd60b EA |
546 | #ifdef MATCHGECOS |
547 | /* see if fuzzy matching allowed */ | |
548 | if (!MatchGecos) | |
42450b5a EA |
549 | { |
550 | if (tTd(29, 4)) | |
551 | printf("not found (fuzzy disabled)\n"); | |
7f0fd60b | 552 | return NULL; |
42450b5a | 553 | } |
7f0fd60b | 554 | |
77b16ff1 | 555 | /* search for a matching full name instead */ |
639d8b98 EA |
556 | for (p = name; *p != '\0'; p++) |
557 | { | |
558 | if (*p == (SpaceSub & 0177) || *p == '_') | |
559 | *p = ' '; | |
560 | } | |
03388044 | 561 | (void) setpwent(); |
2b5e3c25 EA |
562 | while ((pw = getpwent()) != NULL) |
563 | { | |
abae7b2d | 564 | char buf[MAXNAME]; |
2b5e3c25 | 565 | |
abae7b2d | 566 | fullname(pw, buf); |
f3d8f6d6 | 567 | if (strchr(buf, ' ') != NULL && !strcasecmp(buf, name)) |
36292825 | 568 | { |
42450b5a EA |
569 | if (tTd(29, 4)) |
570 | printf("fuzzy matches %s\n", pw->pw_name); | |
abae7b2d EA |
571 | message(Arpa_Info, "sending to %s <%s>", |
572 | buf, pw->pw_name); | |
2b5e3c25 | 573 | return (pw); |
36292825 | 574 | } |
2b5e3c25 | 575 | } |
7f0fd60b | 576 | #endif |
42450b5a EA |
577 | if (tTd(29, 4)) |
578 | printf("no fuzzy match found\n"); | |
2b5e3c25 | 579 | return (NULL); |
ff3e3c1c EA |
580 | } |
581 | \f/* | |
a0554f81 EA |
582 | ** WRITABLE -- predicate returning if the file is writable. |
583 | ** | |
584 | ** This routine must duplicate the algorithm in sys/fio.c. | |
585 | ** Unfortunately, we cannot use the access call since we | |
586 | ** won't necessarily be the real uid when we try to | |
587 | ** actually open the file. | |
588 | ** | |
589 | ** Notice that ANY file with ANY execute bit is automatically | |
590 | ** not writable. This is also enforced by mailfile. | |
591 | ** | |
592 | ** Parameters: | |
593 | ** s -- pointer to a stat struct for the file. | |
594 | ** | |
595 | ** Returns: | |
596 | ** TRUE -- if we will be able to write this file. | |
597 | ** FALSE -- if we cannot write this file. | |
598 | ** | |
599 | ** Side Effects: | |
600 | ** none. | |
601 | */ | |
602 | ||
603 | bool | |
604 | writable(s) | |
605 | register struct stat *s; | |
606 | { | |
44967af8 EA |
607 | uid_t euid; |
608 | gid_t egid; | |
a0554f81 EA |
609 | int bits; |
610 | ||
611 | if (bitset(0111, s->st_mode)) | |
612 | return (FALSE); | |
613 | euid = getruid(); | |
614 | egid = getrgid(); | |
615 | if (geteuid() == 0) | |
616 | { | |
617 | if (bitset(S_ISUID, s->st_mode)) | |
618 | euid = s->st_uid; | |
619 | if (bitset(S_ISGID, s->st_mode)) | |
620 | egid = s->st_gid; | |
621 | } | |
622 | ||
623 | if (euid == 0) | |
624 | return (TRUE); | |
625 | bits = S_IWRITE; | |
626 | if (euid != s->st_uid) | |
627 | { | |
628 | bits >>= 3; | |
629 | if (egid != s->st_gid) | |
630 | bits >>= 3; | |
631 | } | |
632 | return ((s->st_mode & bits) != 0); | |
633 | } | |
634 | \f/* | |
6eefe4f6 EA |
635 | ** INCLUDE -- handle :include: specification. |
636 | ** | |
637 | ** Parameters: | |
638 | ** fname -- filename to include. | |
a90a7c55 EA |
639 | ** forwarding -- if TRUE, we are reading a .forward file. |
640 | ** if FALSE, it's a :include: file. | |
1bf7c76b EA |
641 | ** ctladdr -- address template to use to fill in these |
642 | ** addresses -- effective user/group id are | |
643 | ** the important things. | |
d4f42161 EA |
644 | ** sendq -- a pointer to the head of the send queue |
645 | ** to put these addresses in. | |
6eefe4f6 EA |
646 | ** |
647 | ** Returns: | |
e0136832 | 648 | ** open error status |
6eefe4f6 EA |
649 | ** |
650 | ** Side Effects: | |
651 | ** reads the :include: file and sends to everyone | |
652 | ** listed in that file. | |
653 | */ | |
654 | ||
a90a7c55 EA |
655 | static jmp_buf CtxIncludeTimeout; |
656 | ||
e0136832 | 657 | int |
a4076aed | 658 | include(fname, forwarding, ctladdr, sendq, e) |
6eefe4f6 | 659 | char *fname; |
a90a7c55 | 660 | bool forwarding; |
1bf7c76b | 661 | ADDRESS *ctladdr; |
d4f42161 | 662 | ADDRESS **sendq; |
a4076aed | 663 | ENVELOPE *e; |
6eefe4f6 | 664 | { |
6eefe4f6 | 665 | register FILE *fp; |
a4076aed | 666 | char *oldto = e->e_to; |
7338e3d4 EA |
667 | char *oldfilename = FileName; |
668 | int oldlinenumber = LineNumber; | |
a90a7c55 EA |
669 | register EVENT *ev = NULL; |
670 | char buf[MAXLINE]; | |
671 | static int includetimeout(); | |
672 | ||
b21ec539 EA |
673 | if (tTd(27, 2)) |
674 | printf("include(%s)\n", fname); | |
675 | ||
a90a7c55 EA |
676 | /* |
677 | ** If home directory is remote mounted but server is down, | |
678 | ** this can hang or give errors; use a timeout to avoid this | |
679 | */ | |
680 | ||
681 | if (setjmp(CtxIncludeTimeout) != 0) | |
682 | { | |
683 | ctladdr->q_flags |= QQUEUEUP|QDONTSEND; | |
684 | errno = 0; | |
685 | usrerr("451 open timeout on %s", fname); | |
e0136832 | 686 | return ETIMEDOUT; |
a90a7c55 EA |
687 | } |
688 | ev = setevent((time_t) 60, includetimeout, 0); | |
689 | ||
690 | /* if forwarding, the input file must be marked safe */ | |
691 | if (forwarding && !safefile(fname, ctladdr->q_uid, S_IREAD)) | |
692 | { | |
693 | /* don't use this .forward file */ | |
694 | clrevent(ev); | |
b21ec539 EA |
695 | if (tTd(27, 4)) |
696 | printf("include: not safe (uid=%d)\n", ctladdr->q_uid); | |
e0136832 | 697 | return EPERM; |
a90a7c55 | 698 | } |
6eefe4f6 | 699 | |
6eefe4f6 EA |
700 | fp = fopen(fname, "r"); |
701 | if (fp == NULL) | |
702 | { | |
e0136832 EA |
703 | int ret = errno; |
704 | ||
6eefe4f6 | 705 | usrerr("Cannot open %s", fname); |
e0136832 | 706 | return ret; |
6eefe4f6 | 707 | } |
a90a7c55 | 708 | |
962c3fb2 EA |
709 | if (getctladdr(ctladdr) == NULL) |
710 | { | |
711 | struct stat st; | |
712 | ||
713 | if (fstat(fileno(fp), &st) < 0) | |
714 | syserr("Cannot fstat %s!", fname); | |
715 | ctladdr->q_uid = st.st_uid; | |
716 | ctladdr->q_gid = st.st_gid; | |
717 | ctladdr->q_flags |= QGOODUID; | |
718 | } | |
6eefe4f6 | 719 | |
a90a7c55 EA |
720 | clrevent(ev); |
721 | ||
6eefe4f6 | 722 | /* read the file -- each line is a comma-separated list. */ |
7338e3d4 EA |
723 | FileName = fname; |
724 | LineNumber = 0; | |
6eefe4f6 EA |
725 | while (fgets(buf, sizeof buf, fp) != NULL) |
726 | { | |
f3d8f6d6 | 727 | register char *p = strchr(buf, '\n'); |
6eefe4f6 | 728 | |
dd0758e5 | 729 | LineNumber++; |
6eefe4f6 EA |
730 | if (p != NULL) |
731 | *p = '\0'; | |
b21ec539 | 732 | if (buf[0] == '#' || buf[0] == '\0') |
af04f6e4 | 733 | continue; |
a4076aed | 734 | e->e_to = oldto; |
a90a7c55 EA |
735 | message(Arpa_Info, "%s to %s", |
736 | forwarding ? "forwarding" : "sending", buf); | |
aa102c71 EA |
737 | #ifdef LOG |
738 | if (forwarding && LogLevel >= 10) | |
739 | syslog(LOG_INFO, "%s: forward %s => %s", | |
740 | e->e_id, oldto, buf); | |
741 | #endif | |
742 | ||
23008226 | 743 | AliasLevel++; |
abae7b2d | 744 | sendto(buf, 1, ctladdr, 0); |
23008226 | 745 | AliasLevel--; |
6eefe4f6 EA |
746 | } |
747 | ||
74c5fe7c | 748 | (void) fclose(fp); |
7338e3d4 EA |
749 | FileName = oldfilename; |
750 | LineNumber = oldlinenumber; | |
e0136832 | 751 | return 0; |
6eefe4f6 | 752 | } |
a90a7c55 EA |
753 | |
754 | static | |
755 | includetimeout() | |
756 | { | |
757 | longjmp(CtxIncludeTimeout, 1); | |
758 | } | |
d6b27179 EA |
759 | \f/* |
760 | ** SENDTOARGV -- send to an argument vector. | |
761 | ** | |
762 | ** Parameters: | |
763 | ** argv -- argument vector to send to. | |
764 | ** | |
765 | ** Returns: | |
766 | ** none. | |
767 | ** | |
768 | ** Side Effects: | |
769 | ** puts all addresses on the argument vector onto the | |
770 | ** send queue. | |
771 | */ | |
772 | ||
a4076aed | 773 | sendtoargv(argv, e) |
d6b27179 | 774 | register char **argv; |
a4076aed | 775 | register ENVELOPE *e; |
d6b27179 EA |
776 | { |
777 | register char *p; | |
d6b27179 EA |
778 | |
779 | while ((p = *argv++) != NULL) | |
780 | { | |
ed73ef1d | 781 | if (argv[0] != NULL && argv[1] != NULL && !strcasecmp(argv[0], "at")) |
d6b27179 EA |
782 | { |
783 | char nbuf[MAXNAME]; | |
784 | ||
785 | if (strlen(p) + strlen(argv[1]) + 2 > sizeof nbuf) | |
786 | usrerr("address overflow"); | |
787 | else | |
788 | { | |
789 | (void) strcpy(nbuf, p); | |
790 | (void) strcat(nbuf, "@"); | |
791 | (void) strcat(nbuf, argv[1]); | |
792 | p = newstr(nbuf); | |
793 | argv += 2; | |
794 | } | |
795 | } | |
abae7b2d | 796 | sendto(p, 0, (ADDRESS *) NULL, 0); |
d6b27179 EA |
797 | } |
798 | } | |
1bf7c76b EA |
799 | \f/* |
800 | ** GETCTLADDR -- get controlling address from an address header. | |
801 | ** | |
802 | ** If none, get one corresponding to the effective userid. | |
803 | ** | |
804 | ** Parameters: | |
805 | ** a -- the address to find the controller of. | |
806 | ** | |
807 | ** Returns: | |
808 | ** the controlling address. | |
809 | ** | |
810 | ** Side Effects: | |
811 | ** none. | |
812 | */ | |
813 | ||
814 | ADDRESS * | |
815 | getctladdr(a) | |
816 | register ADDRESS *a; | |
817 | { | |
2c1457f0 | 818 | while (a != NULL && !bitset(QGOODUID, a->q_flags)) |
1bf7c76b | 819 | a = a->q_alias; |
1bf7c76b EA |
820 | return (a); |
821 | } |