Commit | Line | Data |
---|---|---|
8523533c TK |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
5 | /* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003-???? */ | |
6 | /* License: GPL */ | |
7 | ||
8 | /* Code for calling spamassassin's spamd. Called from acl.c. */ | |
9 | ||
10 | #include "exim.h" | |
11 | #ifdef WITH_CONTENT_SCAN | |
12 | #include "spam.h" | |
13 | ||
14 | uschar spam_score_buffer[16]; | |
15 | uschar spam_score_int_buffer[16]; | |
16 | uschar spam_bar_buffer[128]; | |
c5f280e2 | 17 | uschar spam_action_buffer[32]; |
8523533c TK |
18 | uschar spam_report_buffer[32600]; |
19 | uschar prev_user_name[128] = ""; | |
20 | int spam_ok = 0; | |
21 | int spam_rc = 0; | |
f7274286 | 22 | uschar *prev_spamd_address_work = NULL; |
8523533c | 23 | |
fd4d8871 | 24 | static const uschar * loglabel = US"spam acl condition:"; |
8523533c | 25 | |
23763898 | 26 | |
fd4d8871 R |
27 | static int |
28 | spamd_param_init(spamd_address_container *spamd) | |
29 | { | |
30 | /* default spamd server weight, time and backup value */ | |
fd4d8871 R |
31 | spamd->is_failed = FALSE; |
32 | spamd->is_backup = FALSE; | |
8a512ed5 JH |
33 | spamd->weight = SPAMD_WEIGHT; |
34 | spamd->timeout = SPAMD_TIMEOUT; | |
35 | spamd->retry = 0; | |
fd4d8871 R |
36 | return 0; |
37 | } | |
8523533c | 38 | |
8523533c | 39 | |
fd4d8871 R |
40 | static int |
41 | spamd_param(const uschar *param, spamd_address_container *spamd) | |
42 | { | |
43 | static int timesinceday = -1; | |
23763898 | 44 | const uschar * s; |
8a512ed5 | 45 | const uschar * name; |
fd4d8871 R |
46 | |
47 | /* check backup parameter */ | |
48 | if (Ustrcmp(param, "backup") == 0) | |
49 | { | |
50 | spamd->is_backup = TRUE; | |
51 | return 0; /* OK */ | |
52 | } | |
53 | ||
54 | /*XXX more clever parsing could discard embedded spaces? */ | |
55 | ||
56 | /* check weight parameter */ | |
57 | if (sscanf(param, "weight=%u", &spamd->weight)) | |
58 | { | |
59 | if (spamd->weight == 0) /* this server disabled: skip it */ | |
60 | return 1; | |
61 | return 0; /* OK */ | |
62 | } | |
63 | ||
64 | /* check time parameter */ | |
23763898 | 65 | if (Ustrncmp(param, "time=", 5) == 0) |
fd4d8871 R |
66 | { |
67 | unsigned int start_h = 0, start_m = 0, start_s = 0; | |
68 | unsigned int end_h = 24, end_m = 0, end_s = 0; | |
69 | unsigned int time_start, time_end; | |
23763898 | 70 | const uschar * end_string; |
fd4d8871 | 71 | |
8a512ed5 | 72 | name = US"time"; |
23763898 JH |
73 | s = param+5; |
74 | if ((end_string = Ustrchr(s, '-'))) | |
ddcf2b5f | 75 | { |
23763898 JH |
76 | end_string++; |
77 | if ( sscanf(CS end_string, "%u.%u.%u", &end_h, &end_m, &end_s) == 0 | |
78 | || sscanf(CS s, "%u.%u.%u", &start_h, &start_m, &start_s) == 0 | |
79 | ) | |
8a512ed5 | 80 | goto badval; |
f7274286 | 81 | } |
f7274286 | 82 | else |
8a512ed5 | 83 | goto badval; |
8523533c | 84 | |
fd4d8871 | 85 | if (timesinceday < 0) |
ddcf2b5f | 86 | { |
fd4d8871 R |
87 | time_t now = time(NULL); |
88 | struct tm *tmp = localtime(&now); | |
89 | timesinceday = tmp->tm_hour*3600 + tmp->tm_min*60 + tmp->tm_sec; | |
90 | } | |
8e669ac1 | 91 | |
fd4d8871 R |
92 | time_start = start_h*3600 + start_m*60 + start_s; |
93 | time_end = end_h*3600 + end_m*60 + end_s; | |
8e669ac1 | 94 | |
fd4d8871 R |
95 | if (timesinceday < time_start || timesinceday >= time_end) |
96 | return 1; /* skip spamd server */ | |
c5f280e2 | 97 | |
fd4d8871 R |
98 | return 0; /* OK */ |
99 | } | |
8e669ac1 | 100 | |
fd4d8871 R |
101 | if (Ustrcmp(param, "variant=rspamd") == 0) |
102 | { | |
103 | spamd->is_rspamd = TRUE; | |
104 | return 0; | |
105 | } | |
8e669ac1 | 106 | |
23763898 JH |
107 | if (Ustrncmp(param, "tmo=", 4) == 0) |
108 | { | |
109 | int sec = readconf_readtime((s = param+4), '\0', FALSE); | |
8a512ed5 | 110 | name = US"timeout"; |
23763898 | 111 | if (sec < 0) |
8a512ed5 JH |
112 | goto badval; |
113 | spamd->timeout = sec; | |
114 | return 0; | |
115 | } | |
116 | ||
117 | if (Ustrncmp(param, "retry=", 6) == 0) | |
118 | { | |
119 | int sec = readconf_readtime((s = param+6), '\0', FALSE); | |
120 | name = US"retry"; | |
121 | if (sec < 0) | |
122 | goto badval; | |
123 | spamd->retry = sec; | |
23763898 JH |
124 | return 0; |
125 | } | |
126 | ||
fd4d8871 R |
127 | log_write(0, LOG_MAIN, "%s warning - invalid spamd parameter: '%s'", |
128 | loglabel, param); | |
129 | return -1; /* syntax error */ | |
8a512ed5 JH |
130 | |
131 | badval: | |
132 | log_write(0, LOG_MAIN, | |
133 | "%s warning - invalid spamd %s value: '%s'", loglabel, name, s); | |
134 | return -1; /* syntax error */ | |
fd4d8871 | 135 | } |
8523533c | 136 | |
8523533c | 137 | |
fd4d8871 R |
138 | static int |
139 | spamd_get_server(spamd_address_container **spamds, int num_servers) | |
140 | { | |
141 | unsigned int i; | |
142 | long rnd, weights = 0; | |
143 | static BOOL srandomed = 0; | |
144 | BOOL usebackup = FALSE; | |
145 | ||
146 | for (;;) | |
147 | { | |
148 | /* seedup, if we have only 1 server */ | |
149 | if (num_servers == 1) | |
150 | return (spamds[0]->is_failed ? -1 : 0); | |
151 | ||
152 | /* init ranmod */ | |
153 | if (!srandomed) | |
154 | { | |
155 | struct timeval tv; | |
156 | gettimeofday(&tv, NULL); | |
157 | srandom((unsigned int)(tv.tv_usec/1000)); | |
158 | srandomed = TRUE; | |
159 | } | |
8e669ac1 | 160 | |
fd4d8871 R |
161 | /* get sum of all weights */ |
162 | for (i = 0; i < num_servers; i++) | |
163 | if (!spamds[i]->is_failed && spamds[i]->is_backup == usebackup) | |
164 | weights += spamds[i]->weight; | |
8e669ac1 | 165 | |
fd4d8871 R |
166 | if (weights != 0) |
167 | break; | |
168 | if (usebackup) /* all servers failed (backups too) */ | |
169 | return -1; | |
170 | usebackup = TRUE; | |
171 | } | |
8e669ac1 | 172 | |
fd4d8871 | 173 | rnd = random() % weights; |
8e669ac1 | 174 | |
fd4d8871 R |
175 | for (i = 0; i < num_servers; i++) |
176 | if (!spamds[i]->is_failed && spamds[i]->is_backup == usebackup) | |
177 | if ((rnd -= spamds[i]->weight) < 0) | |
178 | return i; | |
29cfeb94 | 179 | |
fd4d8871 R |
180 | log_write(0, LOG_MAIN|LOG_PANIC, |
181 | "%s unknown error (memory/cpu corruption?)", loglabel); | |
182 | return -1; | |
183 | } | |
29cfeb94 | 184 | |
29cfeb94 | 185 | |
fd4d8871 | 186 | int |
55414b25 | 187 | spam(const uschar **listptr) |
fd4d8871 R |
188 | { |
189 | int sep = 0; | |
55414b25 | 190 | const uschar *list = *listptr; |
fd4d8871 R |
191 | uschar *user_name; |
192 | uschar user_name_buffer[128]; | |
193 | unsigned long mbox_size; | |
194 | FILE *mbox_file; | |
195 | int spamd_sock = -1; | |
196 | uschar spamd_buffer[32600]; | |
197 | int i, j, offset, result; | |
fd4d8871 R |
198 | uschar spamd_version[8]; |
199 | uschar spamd_short_result[8]; | |
200 | uschar spamd_score_char; | |
201 | double spamd_threshold, spamd_score, spamd_reject_score; | |
202 | int spamd_report_offset; | |
203 | uschar *p,*q; | |
204 | int override = 0; | |
205 | time_t start; | |
206 | size_t read, wrote; | |
207 | struct sockaddr_un server; | |
208 | #ifndef NO_POLL_H | |
209 | struct pollfd pollfd; | |
210 | #else /* Patch posted by Erik ? for OS X */ | |
211 | struct timeval select_tv; /* and applied by PH */ | |
212 | fd_set select_fd; | |
213 | #endif | |
214 | uschar *spamd_address_work; | |
8a512ed5 | 215 | spamd_address_container * sd; |
fd4d8871 R |
216 | |
217 | /* stop compiler warning */ | |
218 | result = 0; | |
219 | ||
220 | /* find the username from the option list */ | |
221 | if ((user_name = string_nextinlist(&list, &sep, | |
222 | user_name_buffer, | |
223 | sizeof(user_name_buffer))) == NULL) | |
224 | { | |
225 | /* no username given, this means no scanning should be done */ | |
226 | return FAIL; | |
227 | } | |
228 | ||
229 | /* if username is "0" or "false", do not scan */ | |
230 | if ( (Ustrcmp(user_name,"0") == 0) || | |
231 | (strcmpic(user_name,US"false") == 0) ) | |
232 | return FAIL; | |
233 | ||
234 | /* if there is an additional option, check if it is "true" */ | |
235 | if (strcmpic(list,US"true") == 0) | |
236 | /* in that case, always return true later */ | |
237 | override = 1; | |
238 | ||
239 | /* expand spamd_address if needed */ | |
240 | if (*spamd_address == '$') | |
241 | { | |
242 | spamd_address_work = expand_string(spamd_address); | |
243 | if (spamd_address_work == NULL) | |
244 | { | |
245 | log_write(0, LOG_MAIN|LOG_PANIC, | |
246 | "%s spamd_address starts with $, but expansion failed: %s", | |
247 | loglabel, expand_string_message); | |
248 | return DEFER; | |
29cfeb94 | 249 | } |
fd4d8871 R |
250 | } |
251 | else | |
252 | spamd_address_work = spamd_address; | |
253 | ||
254 | HDEBUG(D_acl) debug_printf("spamd: addrlist '%s'\n", spamd_address_work); | |
255 | ||
256 | /* check if previous spamd_address was expanded and has changed. dump cached results if so */ | |
257 | if ( spam_ok | |
258 | && prev_spamd_address_work != NULL | |
259 | && Ustrcmp(prev_spamd_address_work, spamd_address_work) != 0 | |
260 | ) | |
261 | spam_ok = 0; | |
262 | ||
263 | /* if we scanned for this username last time, just return */ | |
264 | if (spam_ok && Ustrcmp(prev_user_name, user_name) == 0) | |
265 | return override ? OK : spam_rc; | |
266 | ||
267 | /* make sure the eml mbox file is spooled up */ | |
268 | mbox_file = spool_mbox(&mbox_size, NULL); | |
269 | ||
270 | if (mbox_file == NULL) | |
271 | { | |
272 | /* error while spooling */ | |
273 | log_write(0, LOG_MAIN|LOG_PANIC, | |
274 | "%s error while creating mbox spool file", loglabel); | |
275 | return DEFER; | |
276 | } | |
277 | ||
278 | start = time(NULL); | |
279 | ||
280 | { | |
281 | int num_servers = 0; | |
282 | int current_server; | |
283 | uschar *address; | |
55414b25 | 284 | const uschar *spamd_address_list_ptr = spamd_address_work; |
fd4d8871 | 285 | spamd_address_container * spamd_address_vector[32]; |
fd4d8871 R |
286 | |
287 | /* Check how many spamd servers we have | |
288 | and register their addresses */ | |
289 | while ((address = string_nextinlist(&spamd_address_list_ptr, &sep, | |
290 | NULL, 0)) != NULL) | |
ddcf2b5f | 291 | { |
55414b25 | 292 | const uschar * sublist; |
fd4d8871 R |
293 | int sublist_sep = -(int)' '; /* default space-sep */ |
294 | unsigned args; | |
295 | uschar * s; | |
fd4d8871 R |
296 | |
297 | HDEBUG(D_acl) debug_printf("spamd: addr entry '%s'\n", address); | |
2aad5761 | 298 | sd = (spamd_address_container *)store_get(sizeof(spamd_address_container)); |
fd4d8871 | 299 | |
2aad5761 | 300 | for (sublist = address, args = 0, spamd_param_init(sd); |
fd4d8871 R |
301 | s = string_nextinlist(&sublist, &sublist_sep, NULL, 0); |
302 | args++ | |
303 | ) | |
ddcf2b5f | 304 | { |
8a512ed5 | 305 | HDEBUG(D_acl) debug_printf("spamd: addr parm '%s'\n", s); |
fd4d8871 R |
306 | switch (args) |
307 | { | |
2aad5761 | 308 | case 0: sd->hostspec = s; |
fd4d8871 R |
309 | if (*s == '/') args++; /* local; no port */ |
310 | break; | |
2aad5761 JH |
311 | case 1: sd->hostspec = string_sprintf("%s %s", sd->hostspec, s); |
312 | break; | |
313 | default: spamd_param(s, sd); | |
314 | break; | |
fd4d8871 | 315 | } |
ddcf2b5f | 316 | } |
fd4d8871 | 317 | if (args < 2) |
c5f280e2 | 318 | { |
fd4d8871 R |
319 | log_write(0, LOG_MAIN, |
320 | "%s warning - invalid spamd address: '%s'", loglabel, address); | |
321 | continue; | |
c5f280e2 | 322 | } |
8523533c | 323 | |
2aad5761 | 324 | spamd_address_vector[num_servers] = sd; |
fd4d8871 R |
325 | if (++num_servers > 31) |
326 | break; | |
8523533c TK |
327 | } |
328 | ||
fd4d8871 R |
329 | /* check if we have at least one server */ |
330 | if (!num_servers) | |
ddcf2b5f | 331 | { |
0f501486 | 332 | log_write(0, LOG_MAIN|LOG_PANIC, |
fd4d8871 R |
333 | "%s no useable spamd server addresses in spamd_address configuration option.", |
334 | loglabel); | |
8acbb134 | 335 | goto defer; |
ddcf2b5f | 336 | } |
0f501486 | 337 | |
8a512ed5 JH |
338 | current_server = spamd_get_server(spamd_address_vector, num_servers); |
339 | sd = spamd_address_vector[current_server]; | |
340 | for(;;) | |
ddcf2b5f | 341 | { |
2aad5761 | 342 | uschar * errstr; |
8523533c | 343 | |
2aad5761 | 344 | debug_printf("trying server %s\n", sd->hostspec); |
fd4d8871 | 345 | |
8a512ed5 JH |
346 | for (;;) |
347 | { | |
348 | if ( (spamd_sock = ip_streamsocket(sd->hostspec, &errstr, 5)) >= 0 | |
349 | || sd->retry <= 0 | |
350 | ) | |
351 | break; | |
352 | debug_printf("server %s: retry conn\n", sd->hostspec); | |
353 | while (sd->retry > 0) sd->retry = sleep(sd->retry); | |
354 | } | |
355 | if (spamd_sock >= 0) | |
2aad5761 | 356 | break; |
25257489 | 357 | |
2aad5761 JH |
358 | log_write(0, LOG_MAIN, "%s spamd: %s", loglabel, errstr); |
359 | sd->is_failed = TRUE; | |
25257489 | 360 | |
2aad5761 JH |
361 | current_server = spamd_get_server(spamd_address_vector, num_servers); |
362 | if (current_server < 0) | |
fd4d8871 | 363 | { |
8a512ed5 | 364 | log_write(0, LOG_MAIN|LOG_PANIC, "%s all spamd servers failed", loglabel); |
2aad5761 | 365 | goto defer; |
fd4d8871 | 366 | } |
8a512ed5 | 367 | sd = spamd_address_vector[current_server]; |
ddcf2b5f | 368 | } |
fd4d8871 | 369 | } |
8523533c | 370 | |
fd4d8871 R |
371 | if (spamd_sock == -1) |
372 | { | |
373 | log_write(0, LOG_MAIN|LOG_PANIC, | |
374 | "programming fault, spamd_sock unexpectedly unset"); | |
8acbb134 | 375 | goto defer; |
fd4d8871 R |
376 | } |
377 | ||
378 | (void)fcntl(spamd_sock, F_SETFL, O_NONBLOCK); | |
379 | /* now we are connected to spamd on spamd_sock */ | |
8a512ed5 | 380 | if (sd->is_rspamd) |
fd4d8871 R |
381 | { /* rspamd variant */ |
382 | uschar *req_str; | |
6c54be64 AL |
383 | const uschar * helo; |
384 | const uschar * fcrdns; | |
385 | const uschar * authid; | |
fd4d8871 R |
386 | |
387 | req_str = string_sprintf("CHECK RSPAMC/1.3\r\nContent-length: %lu\r\n" | |
388 | "Queue-Id: %s\r\nFrom: <%s>\r\nRecipient-Number: %d\r\n", mbox_size, | |
389 | message_id, sender_address, recipients_count); | |
390 | for (i = 0; i < recipients_count; i ++) | |
391 | req_str = string_sprintf("%sRcpt: <%s>\r\n", req_str, recipients_list[i].address); | |
392 | if ((helo = expand_string(US"$sender_helo_name")) != NULL && *helo != '\0') | |
393 | req_str = string_sprintf("%sHelo: %s\r\n", req_str, helo); | |
394 | if ((fcrdns = expand_string(US"$sender_host_name")) != NULL && *fcrdns != '\0') | |
395 | req_str = string_sprintf("%sHostname: %s\r\n", req_str, fcrdns); | |
396 | if (sender_host_address != NULL) | |
397 | req_str = string_sprintf("%sIP: %s\r\n", req_str, sender_host_address); | |
6c54be64 AL |
398 | if ((authid = expand_string(US"$authenticated_id")) != NULL && *authid != '\0') |
399 | req_str = string_sprintf("%sUser: %s\r\n", req_str, authid); | |
fd4d8871 R |
400 | req_str = string_sprintf("%s\r\n", req_str); |
401 | wrote = send(spamd_sock, req_str, Ustrlen(req_str), 0); | |
402 | } | |
6c54be64 | 403 | else |
fd4d8871 R |
404 | { /* spamassassin variant */ |
405 | (void)string_format(spamd_buffer, | |
406 | sizeof(spamd_buffer), | |
407 | "REPORT SPAMC/1.2\r\nUser: %s\r\nContent-length: %ld\r\n\r\n", | |
408 | user_name, | |
409 | mbox_size); | |
410 | /* send our request */ | |
411 | wrote = send(spamd_sock, spamd_buffer, Ustrlen(spamd_buffer), 0); | |
412 | } | |
6c54be64 | 413 | |
fd4d8871 R |
414 | if (wrote == -1) |
415 | { | |
416 | (void)close(spamd_sock); | |
417 | log_write(0, LOG_MAIN|LOG_PANIC, | |
418 | "%s spamd send failed: %s", loglabel, strerror(errno)); | |
8acbb134 | 419 | goto defer; |
fd4d8871 R |
420 | } |
421 | ||
422 | /* now send the file */ | |
423 | /* spamd sometimes accepts conections but doesn't read data off | |
424 | * the connection. We make the file descriptor non-blocking so | |
425 | * that the write will only write sufficient data without blocking | |
426 | * and we poll the desciptor to make sure that we can write without | |
427 | * blocking. Short writes are gracefully handled and if the whole | |
428 | * trasaction takes too long it is aborted. | |
429 | * Note: poll() is not supported in OSX 10.2 and is reported to be | |
430 | * broken in more recent versions (up to 10.4). | |
431 | */ | |
432 | #ifndef NO_POLL_H | |
433 | pollfd.fd = spamd_sock; | |
434 | pollfd.events = POLLOUT; | |
435 | #endif | |
436 | (void)fcntl(spamd_sock, F_SETFL, O_NONBLOCK); | |
437 | do | |
438 | { | |
439 | read = fread(spamd_buffer,1,sizeof(spamd_buffer),mbox_file); | |
440 | if (read > 0) | |
ddcf2b5f | 441 | { |
fd4d8871 R |
442 | offset = 0; |
443 | again: | |
444 | #ifndef NO_POLL_H | |
445 | result = poll(&pollfd, 1, 1000); | |
8523533c | 446 | |
fd4d8871 R |
447 | /* Patch posted by Erik ? for OS X and applied by PH */ |
448 | #else | |
449 | select_tv.tv_sec = 1; | |
450 | select_tv.tv_usec = 0; | |
451 | FD_ZERO(&select_fd); | |
452 | FD_SET(spamd_sock, &select_fd); | |
453 | result = select(spamd_sock+1, NULL, &select_fd, NULL, &select_tv); | |
454 | #endif | |
455 | /* End Erik's patch */ | |
8523533c | 456 | |
fd4d8871 R |
457 | if (result == -1 && errno == EINTR) |
458 | goto again; | |
459 | else if (result < 1) | |
c5f280e2 | 460 | { |
fd4d8871 R |
461 | if (result == -1) |
462 | log_write(0, LOG_MAIN|LOG_PANIC, | |
463 | "%s %s on spamd socket", loglabel, strerror(errno)); | |
464 | else | |
465 | { | |
8a512ed5 | 466 | if (time(NULL) - start < sd->timeout) |
fd4d8871 R |
467 | goto again; |
468 | log_write(0, LOG_MAIN|LOG_PANIC, | |
469 | "%s timed out writing spamd socket", loglabel); | |
470 | } | |
471 | (void)close(spamd_sock); | |
8acbb134 | 472 | goto defer; |
c5f280e2 | 473 | } |
8e669ac1 | 474 | |
fd4d8871 R |
475 | wrote = send(spamd_sock,spamd_buffer + offset,read - offset,0); |
476 | if (wrote == -1) | |
c5f280e2 | 477 | { |
fd4d8871 R |
478 | log_write(0, LOG_MAIN|LOG_PANIC, |
479 | "%s %s on spamd socket", loglabel, strerror(errno)); | |
480 | (void)close(spamd_sock); | |
8acbb134 | 481 | goto defer; |
c5f280e2 | 482 | } |
fd4d8871 | 483 | if (offset + wrote != read) |
ddcf2b5f | 484 | { |
fd4d8871 R |
485 | offset += wrote; |
486 | goto again; | |
ddcf2b5f JH |
487 | } |
488 | } | |
fd4d8871 R |
489 | } |
490 | while (!feof(mbox_file) && !ferror(mbox_file)); | |
8523533c | 491 | |
fd4d8871 R |
492 | if (ferror(mbox_file)) |
493 | { | |
494 | log_write(0, LOG_MAIN|LOG_PANIC, | |
495 | "%s error reading spool file: %s", loglabel, strerror(errno)); | |
496 | (void)close(spamd_sock); | |
8acbb134 | 497 | goto defer; |
fd4d8871 R |
498 | } |
499 | ||
500 | (void)fclose(mbox_file); | |
501 | ||
502 | /* we're done sending, close socket for writing */ | |
503 | shutdown(spamd_sock,SHUT_WR); | |
504 | ||
505 | /* read spamd response using what's left of the timeout. */ | |
506 | memset(spamd_buffer, 0, sizeof(spamd_buffer)); | |
507 | offset = 0; | |
508 | while ((i = ip_recv(spamd_sock, | |
509 | spamd_buffer + offset, | |
510 | sizeof(spamd_buffer) - offset - 1, | |
8a512ed5 | 511 | sd->timeout - time(NULL) + start)) > 0 ) |
fd4d8871 R |
512 | offset += i; |
513 | ||
514 | /* error handling */ | |
515 | if (i <= 0 && errno != 0) | |
516 | { | |
517 | log_write(0, LOG_MAIN|LOG_PANIC, | |
518 | "%s error reading from spamd socket: %s", loglabel, strerror(errno)); | |
519 | (void)close(spamd_sock); | |
520 | return DEFER; | |
521 | } | |
522 | ||
523 | /* reading done */ | |
524 | (void)close(spamd_sock); | |
525 | ||
8a512ed5 | 526 | if (sd->is_rspamd) |
fd4d8871 R |
527 | { /* rspamd variant of reply */ |
528 | int r; | |
529 | if ((r = sscanf(CS spamd_buffer, | |
530 | "RSPAMD/%7s 0 EX_OK\r\nMetric: default; %7s %lf / %lf / %lf\r\n%n", | |
531 | spamd_version, spamd_short_result, &spamd_score, &spamd_threshold, | |
532 | &spamd_reject_score, &spamd_report_offset)) != 5) | |
533 | { | |
6c54be64 AL |
534 | log_write(0, LOG_MAIN|LOG_PANIC, |
535 | "%s cannot parse spamd output: %d", loglabel, r); | |
536 | return DEFER; | |
fd4d8871 R |
537 | } |
538 | /* now parse action */ | |
8523533c | 539 | p = &spamd_buffer[spamd_report_offset]; |
fd4d8871 R |
540 | |
541 | if (Ustrncmp(p, "Action: ", sizeof("Action: ") - 1) == 0) | |
ddcf2b5f | 542 | { |
fd4d8871 R |
543 | p += sizeof("Action: ") - 1; |
544 | q = &spam_action_buffer[0]; | |
545 | while (*p && *p != '\r' && (q - spam_action_buffer) < sizeof(spam_action_buffer) - 1) | |
546 | *q++ = *p++; | |
547 | *q = '\0'; | |
ddcf2b5f | 548 | } |
fd4d8871 R |
549 | } |
550 | else | |
551 | { /* spamassassin */ | |
552 | /* dig in the spamd output and put the report in a multiline header, | |
553 | if requested */ | |
554 | if (sscanf(CS spamd_buffer, | |
555 | "SPAMD/%7s 0 EX_OK\r\nContent-length: %*u\r\n\r\n%lf/%lf\r\n%n", | |
556 | spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3) | |
ddcf2b5f | 557 | { |
fd4d8871 R |
558 | /* try to fall back to pre-2.50 spamd output */ |
559 | if (sscanf(CS spamd_buffer, | |
560 | "SPAMD/%7s 0 EX_OK\r\nSpam: %*s ; %lf / %lf\r\n\r\n%n", | |
561 | spamd_version,&spamd_score,&spamd_threshold,&spamd_report_offset) != 3) | |
562 | { | |
563 | log_write(0, LOG_MAIN|LOG_PANIC, | |
564 | "%s cannot parse spamd output", loglabel); | |
565 | return DEFER; | |
566 | } | |
ddcf2b5f | 567 | } |
fd4d8871 R |
568 | |
569 | Ustrcpy(spam_action_buffer, | |
570 | spamd_score >= spamd_threshold ? "reject" : "no action"); | |
571 | } | |
572 | ||
573 | /* Create report. Since this is a multiline string, | |
574 | we must hack it into shape first */ | |
575 | p = &spamd_buffer[spamd_report_offset]; | |
576 | q = spam_report_buffer; | |
577 | while (*p != '\0') | |
578 | { | |
579 | /* skip \r */ | |
580 | if (*p == '\r') | |
581 | { | |
582 | p++; | |
583 | continue; | |
584 | } | |
585 | *q++ = *p; | |
586 | if (*p++ == '\n') | |
587 | { | |
588 | /* add an extra space after the newline to ensure | |
589 | that it is treated as a header continuation line */ | |
590 | *q++ = ' '; | |
591 | } | |
592 | } | |
593 | /* NULL-terminate */ | |
594 | *q-- = '\0'; | |
595 | /* cut off trailing leftovers */ | |
596 | while (*q <= ' ') | |
597 | *q-- = '\0'; | |
598 | ||
599 | spam_report = spam_report_buffer; | |
600 | spam_action = spam_action_buffer; | |
601 | ||
602 | /* create spam bar */ | |
603 | spamd_score_char = spamd_score > 0 ? '+' : '-'; | |
604 | j = abs((int)(spamd_score)); | |
605 | i = 0; | |
606 | if (j != 0) | |
607 | while ((i < j) && (i <= MAX_SPAM_BAR_CHARS)) | |
608 | spam_bar_buffer[i++] = spamd_score_char; | |
609 | else | |
610 | { | |
611 | spam_bar_buffer[0] = '/'; | |
612 | i = 1; | |
613 | } | |
614 | spam_bar_buffer[i] = '\0'; | |
615 | spam_bar = spam_bar_buffer; | |
616 | ||
617 | /* create "float" spam score */ | |
618 | (void)string_format(spam_score_buffer, sizeof(spam_score_buffer), | |
619 | "%.1f", spamd_score); | |
620 | spam_score = spam_score_buffer; | |
621 | ||
622 | /* create "int" spam score */ | |
623 | j = (int)((spamd_score + 0.001)*10); | |
624 | (void)string_format(spam_score_int_buffer, sizeof(spam_score_int_buffer), | |
625 | "%d", j); | |
626 | spam_score_int = spam_score_int_buffer; | |
627 | ||
628 | /* compare threshold against score */ | |
629 | spam_rc = spamd_score >= spamd_threshold | |
630 | ? OK /* spam as determined by user's threshold */ | |
631 | : FAIL; /* not spam */ | |
632 | ||
633 | /* remember expanded spamd_address if needed */ | |
634 | if (spamd_address_work != spamd_address) | |
635 | prev_spamd_address_work = string_copy(spamd_address_work); | |
636 | ||
637 | /* remember user name and "been here" for it */ | |
638 | Ustrcpy(prev_user_name, user_name); | |
639 | spam_ok = 1; | |
640 | ||
641 | return override | |
642 | ? OK /* always return OK, no matter what the score */ | |
643 | : spam_rc; | |
8acbb134 JH |
644 | |
645 | defer: | |
646 | (void)fclose(mbox_file); | |
647 | return DEFER; | |
8523533c TK |
648 | } |
649 | ||
650 | #endif | |
2aad5761 JH |
651 | /* vi: aw ai sw=2 |
652 | */ |