Commit | Line | Data |
---|---|---|
059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
c4ceed07 | 5 | /* Copyright (c) University of Cambridge 1995 - 2012 */ |
059ec3d9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | /* Functions for reading spool files. When compiling for a utility (eximon), | |
9 | not all are needed, and some functionality can be cut out. */ | |
10 | ||
11 | ||
12 | #include "exim.h" | |
13 | ||
14 | ||
15 | ||
16 | #ifndef COMPILE_UTILITY | |
17 | /************************************************* | |
18 | * Open and lock data file * | |
19 | *************************************************/ | |
20 | ||
21 | /* The data file is the one that is used for locking, because the header file | |
22 | can get replaced during delivery because of header rewriting. The file has | |
23 | to opened with write access so that we can get an exclusive lock, but in | |
24 | fact it won't be written to. Just in case there's a major disaster (e.g. | |
25 | overwriting some other file descriptor with the value of this one), open it | |
26 | with append. | |
27 | ||
28 | Argument: the id of the message | |
29 | Returns: TRUE if file successfully opened and locked | |
30 | ||
31 | Side effect: deliver_datafile is set to the fd of the open file. | |
32 | */ | |
33 | ||
34 | BOOL | |
35 | spool_open_datafile(uschar *id) | |
36 | { | |
37 | int i; | |
38 | struct stat statbuf; | |
39 | flock_t lock_data; | |
40 | uschar spoolname[256]; | |
41 | ||
42 | /* If split_spool_directory is set, first look for the file in the appropriate | |
43 | sub-directory of the input directory. If it is not found there, try the input | |
44 | directory itself, to pick up leftovers from before the splitting. If split_ | |
45 | spool_directory is not set, first look in the main input directory. If it is | |
46 | not found there, try the split sub-directory, in case it is left over from a | |
47 | splitting state. */ | |
48 | ||
49 | for (i = 0; i < 2; i++) | |
50 | { | |
51 | int save_errno; | |
52 | message_subdir[0] = (split_spool_directory == (i == 0))? id[5] : 0; | |
53 | sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id); | |
54 | deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0); | |
55 | if (deliver_datafile >= 0) break; | |
56 | save_errno = errno; | |
57 | if (errno == ENOENT) | |
58 | { | |
59 | if (i == 0) continue; | |
60 | if (!queue_running) | |
61 | log_write(0, LOG_MAIN, "Spool file %s-D not found", id); | |
62 | } | |
63 | else log_write(0, LOG_MAIN, "Spool error for %s: %s", spoolname, | |
64 | strerror(errno)); | |
65 | errno = save_errno; | |
66 | return FALSE; | |
67 | } | |
68 | ||
69 | /* File is open and message_subdir is set. Set the close-on-exec flag, and lock | |
70 | the file. We lock only the first line of the file (containing the message ID) | |
71 | because this apparently is needed for running Exim under Cygwin. If the entire | |
72 | file is locked in one process, a sub-process cannot access it, even when passed | |
73 | an open file descriptor (at least, I think that's the Cygwin story). On real | |
74 | Unix systems it doesn't make any difference as long as Exim is consistent in | |
75 | what it locks. */ | |
76 | ||
ff790e47 | 77 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 PH |
78 | FD_CLOEXEC); |
79 | ||
80 | lock_data.l_type = F_WRLCK; | |
81 | lock_data.l_whence = SEEK_SET; | |
82 | lock_data.l_start = 0; | |
83 | lock_data.l_len = SPOOL_DATA_START_OFFSET; | |
84 | ||
85 | if (fcntl(deliver_datafile, F_SETLK, &lock_data) < 0) | |
86 | { | |
87 | log_write(L_skip_delivery, | |
88 | LOG_MAIN, | |
89 | "Spool file is locked (another process is handling this message)"); | |
f1e894f3 | 90 | (void)close(deliver_datafile); |
059ec3d9 PH |
91 | deliver_datafile = -1; |
92 | errno = 0; | |
93 | return FALSE; | |
94 | } | |
95 | ||
96 | /* Get the size of the data; don't include the leading filename line | |
97 | in the count, but add one for the newline before the data. */ | |
98 | ||
99 | if (fstat(deliver_datafile, &statbuf) == 0) | |
100 | { | |
101 | message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET; | |
102 | message_size = message_body_size + 1; | |
103 | } | |
104 | ||
105 | return TRUE; | |
106 | } | |
107 | #endif /* COMPILE_UTILITY */ | |
108 | ||
109 | ||
110 | ||
111 | /************************************************* | |
112 | * Read non-recipients tree from spool file * | |
113 | *************************************************/ | |
114 | ||
115 | /* The tree of non-recipients is written to the spool file in a form that | |
116 | makes it easy to read back into a tree. The format is as follows: | |
117 | ||
118 | . Each node is preceded by two letter(Y/N) indicating whether it has left | |
119 | or right children. There's one space after the two flags, before the name. | |
120 | ||
121 | . The left subtree (if any) then follows, then the right subtree (if any). | |
122 | ||
123 | This function is entered with the next input line in the buffer. Note we must | |
124 | save the right flag before recursing with the same buffer. | |
125 | ||
126 | Once the tree is read, we re-construct the balance fields by scanning the tree. | |
127 | I forgot to write them out originally, and the compatible fix is to do it this | |
128 | way. This initial local recursing function does the necessary. | |
129 | ||
130 | Arguments: | |
131 | node tree node | |
132 | ||
133 | Returns: maximum depth below the node, including the node itself | |
134 | */ | |
135 | ||
136 | static int | |
137 | count_below(tree_node *node) | |
138 | { | |
139 | int nleft, nright; | |
140 | if (node == NULL) return 0; | |
141 | nleft = count_below(node->left); | |
142 | nright = count_below(node->right); | |
143 | node->balance = (nleft > nright)? 1 : ((nright > nleft)? 2 : 0); | |
144 | return 1 + ((nleft > nright)? nleft : nright); | |
145 | } | |
146 | ||
147 | /* This is the real function... | |
148 | ||
149 | Arguments: | |
150 | connect pointer to the root of the tree | |
151 | f FILE to read data from | |
152 | buffer contains next input line; further lines read into it | |
153 | buffer_size size of the buffer | |
154 | ||
155 | Returns: FALSE on format error | |
156 | */ | |
157 | ||
158 | static BOOL | |
159 | read_nonrecipients_tree(tree_node **connect, FILE *f, uschar *buffer, | |
160 | int buffer_size) | |
161 | { | |
162 | tree_node *node; | |
163 | int n = Ustrlen(buffer); | |
164 | BOOL right = buffer[1] == 'Y'; | |
165 | ||
166 | if (n < 5) return FALSE; /* malformed line */ | |
167 | buffer[n-1] = 0; /* Remove \n */ | |
168 | node = store_get(sizeof(tree_node) + n - 3); | |
169 | *connect = node; | |
170 | Ustrcpy(node->name, buffer + 3); | |
171 | node->data.ptr = NULL; | |
172 | ||
173 | if (buffer[0] == 'Y') | |
174 | { | |
175 | if (Ufgets(buffer, buffer_size, f) == NULL || | |
176 | !read_nonrecipients_tree(&node->left, f, buffer, buffer_size)) | |
177 | return FALSE; | |
178 | } | |
179 | else node->left = NULL; | |
180 | ||
181 | if (right) | |
182 | { | |
183 | if (Ufgets(buffer, buffer_size, f) == NULL || | |
184 | !read_nonrecipients_tree(&node->right, f, buffer, buffer_size)) | |
185 | return FALSE; | |
186 | } | |
187 | else node->right = NULL; | |
188 | ||
189 | (void) count_below(*connect); | |
190 | return TRUE; | |
191 | } | |
192 | ||
193 | ||
194 | ||
195 | ||
196 | /************************************************* | |
197 | * Read spool header file * | |
198 | *************************************************/ | |
199 | ||
200 | /* This function reads a spool header file and places the data into the | |
201 | appropriate global variables. The header portion is always read, but header | |
202 | structures are built only if read_headers is set true. It isn't, for example, | |
203 | while generating -bp output. | |
204 | ||
205 | It may be possible for blocks of nulls (binary zeroes) to get written on the | |
206 | end of a file if there is a system crash during writing. It was observed on an | |
207 | earlier version of Exim that omitted to fsync() the files - this is thought to | |
208 | have been the cause of that incident, but in any case, this code must be robust | |
209 | against such an event, and if such a file is encountered, it must be treated as | |
210 | malformed. | |
211 | ||
212 | Arguments: | |
213 | name name of the header file, including the -H | |
214 | read_headers TRUE if in-store header structures are to be built | |
215 | subdir_set TRUE is message_subdir is already set | |
216 | ||
217 | Returns: spool_read_OK success | |
218 | spool_read_notopen open failed | |
219 | spool_read_enverror error in the envelope portion | |
220 | spool_read_hdrdrror error in the header portion | |
221 | */ | |
222 | ||
223 | int | |
224 | spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set) | |
225 | { | |
226 | FILE *f = NULL; | |
227 | int n; | |
228 | int rcount = 0; | |
229 | long int uid, gid; | |
230 | BOOL inheader = FALSE; | |
1e70f85b | 231 | uschar *p; |
059ec3d9 PH |
232 | |
233 | /* Reset all the global variables to their default values. However, there is | |
234 | one exception. DO NOT change the default value of dont_deliver, because it may | |
235 | be forced by an external setting. */ | |
236 | ||
38a0a95f | 237 | acl_var_c = acl_var_m = NULL; |
059ec3d9 PH |
238 | authenticated_id = NULL; |
239 | authenticated_sender = NULL; | |
240 | allow_unqualified_recipient = FALSE; | |
241 | allow_unqualified_sender = FALSE; | |
242 | body_linecount = 0; | |
243 | body_zerocount = 0; | |
244 | deliver_firsttime = FALSE; | |
245 | deliver_freeze = FALSE; | |
246 | deliver_frozen_at = 0; | |
247 | deliver_manual_thaw = FALSE; | |
248 | /* dont_deliver must NOT be reset */ | |
249 | header_list = header_last = NULL; | |
b08b24c8 | 250 | host_lookup_deferred = FALSE; |
059ec3d9 PH |
251 | host_lookup_failed = FALSE; |
252 | interface_address = NULL; | |
253 | interface_port = 0; | |
254 | local_error_message = FALSE; | |
255 | local_scan_data = NULL; | |
d677b2f2 | 256 | max_received_linelength = 0; |
059ec3d9 PH |
257 | message_linecount = 0; |
258 | received_protocol = NULL; | |
259 | received_count = 0; | |
260 | recipients_list = NULL; | |
261 | sender_address = NULL; | |
262 | sender_fullhost = NULL; | |
263 | sender_helo_name = NULL; | |
264 | sender_host_address = NULL; | |
265 | sender_host_name = NULL; | |
266 | sender_host_port = 0; | |
267 | sender_host_authenticated = NULL; | |
268 | sender_ident = NULL; | |
269 | sender_local = FALSE; | |
270 | sender_set_untrusted = FALSE; | |
1f5b4c3d | 271 | smtp_active_hostname = primary_hostname; |
059ec3d9 PH |
272 | tree_nonrecipients = NULL; |
273 | ||
8523533c TK |
274 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
275 | bmi_run = 0; | |
276 | bmi_verdicts = NULL; | |
277 | #endif | |
278 | ||
80a47a2c | 279 | #ifndef DISABLE_DKIM |
9e5d6b55 | 280 | dkim_signers = NULL; |
80a47a2c TK |
281 | dkim_disable_verify = FALSE; |
282 | dkim_collect_input = FALSE; | |
f7572e5a TK |
283 | #endif |
284 | ||
059ec3d9 | 285 | #ifdef SUPPORT_TLS |
817d9f57 JH |
286 | tls_in.certificate_verified = FALSE; |
287 | tls_in.cipher = NULL; | |
288 | tls_in.peerdn = NULL; | |
289 | tls_in.sni = NULL; | |
7be682ca | 290 | #endif |
059ec3d9 | 291 | |
8523533c | 292 | #ifdef WITH_CONTENT_SCAN |
8523533c TK |
293 | spam_score_int = NULL; |
294 | #endif | |
295 | ||
059ec3d9 PH |
296 | /* Generate the full name and open the file. If message_subdir is already |
297 | set, just look in the given directory. Otherwise, look in both the split | |
298 | and unsplit directories, as for the data file above. */ | |
299 | ||
300 | for (n = 0; n < 2; n++) | |
301 | { | |
302 | if (!subdir_set) | |
303 | message_subdir[0] = (split_spool_directory == (n == 0))? name[5] : 0; | |
304 | sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir, | |
305 | name); | |
306 | f = Ufopen(big_buffer, "rb"); | |
307 | if (f != NULL) break; | |
308 | if (n != 0 || subdir_set || errno != ENOENT) return spool_read_notopen; | |
309 | } | |
310 | ||
311 | errno = 0; | |
312 | ||
313 | #ifndef COMPILE_UTILITY | |
314 | DEBUG(D_deliver) debug_printf("reading spool file %s\n", name); | |
315 | #endif /* COMPILE_UTILITY */ | |
316 | ||
317 | /* The first line of a spool file contains the message id followed by -H (i.e. | |
318 | the file name), in order to make the file self-identifying. */ | |
319 | ||
320 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
321 | if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 || | |
322 | Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0) | |
323 | goto SPOOL_FORMAT_ERROR; | |
324 | ||
325 | /* The next three lines in the header file are in a fixed format. The first | |
326 | contains the login, uid, and gid of the user who caused the file to be written. | |
ebb6e6d5 PH |
327 | There are known cases where a negative gid is used, so we allow for both |
328 | negative uids and gids. The second contains the mail address of the message's | |
329 | sender, enclosed in <>. The third contains the time the message was received, | |
330 | and the number of warning messages for delivery delays that have been sent. */ | |
059ec3d9 PH |
331 | |
332 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
333 | ||
1e70f85b PH |
334 | p = big_buffer + Ustrlen(big_buffer); |
335 | while (p > big_buffer && isspace(p[-1])) p--; | |
336 | *p = 0; | |
337 | if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; | |
ebb6e6d5 | 338 | while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; |
1e70f85b PH |
339 | gid = Uatoi(p); |
340 | if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; | |
341 | *p = 0; | |
342 | if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; | |
ebb6e6d5 | 343 | while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; |
1e70f85b PH |
344 | uid = Uatoi(p); |
345 | if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; | |
346 | *p = 0; | |
8e669ac1 | 347 | |
1e70f85b | 348 | originator_login = string_copy(big_buffer); |
059ec3d9 PH |
349 | originator_uid = (uid_t)uid; |
350 | originator_gid = (gid_t)gid; | |
351 | ||
352 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
353 | n = Ustrlen(big_buffer); | |
354 | if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>') | |
355 | goto SPOOL_FORMAT_ERROR; | |
356 | ||
357 | sender_address = store_get(n-2); | |
358 | Ustrncpy(sender_address, big_buffer+1, n-3); | |
359 | sender_address[n-3] = 0; | |
360 | ||
361 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
362 | if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2) | |
363 | goto SPOOL_FORMAT_ERROR; | |
364 | ||
365 | message_age = time(NULL) - received_time; | |
366 | ||
367 | #ifndef COMPILE_UTILITY | |
368 | DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n", | |
369 | originator_login, (long int)originator_uid, (long int)originator_gid, | |
370 | sender_address); | |
371 | #endif /* COMPILE_UTILITY */ | |
372 | ||
08955dd3 PH |
373 | /* Now there may be a number of optional lines, each starting with "-". If you |
374 | add a new setting here, make sure you set the default above. | |
059ec3d9 | 375 | |
08955dd3 PH |
376 | Because there are now quite a number of different possibilities, we use a |
377 | switch on the first character to avoid too many failing tests. Thanks to Nico | |
378 | Erfurth for the patch that implemented this. I have made it even more efficient | |
379 | by not re-scanning the first two characters. | |
380 | ||
381 | To allow new versions of Exim that add additional flags to interwork with older | |
382 | versions that do not understand them, just ignore any lines starting with "-" | |
383 | that we don't recognize. Otherwise it wouldn't be possible to back off a new | |
384 | version that left new-style flags written on the spool. */ | |
385 | ||
386 | p = big_buffer + 2; | |
059ec3d9 PH |
387 | for (;;) |
388 | { | |
389 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
390 | if (big_buffer[0] != '-') break; | |
059ec3d9 | 391 | big_buffer[Ustrlen(big_buffer) - 1] = 0; |
47ca6d6c | 392 | |
08955dd3 | 393 | switch(big_buffer[1]) |
059ec3d9 | 394 | { |
08955dd3 PH |
395 | case 'a': |
396 | ||
397 | /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL | |
398 | variable, because Exim allows any number of them, with arbitrary names. | |
399 | The line in the spool file is "-acl[cm] <name> <length>". The name excludes | |
400 | the c or m. */ | |
401 | ||
402 | if (Ustrncmp(p, "clc ", 4) == 0 || | |
403 | Ustrncmp(p, "clm ", 4) == 0) | |
404 | { | |
405 | uschar *name, *endptr; | |
406 | int count; | |
407 | tree_node *node; | |
408 | endptr = Ustrchr(big_buffer + 6, ' '); | |
409 | if (endptr == NULL) goto SPOOL_FORMAT_ERROR; | |
410 | name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6, | |
411 | big_buffer + 6); | |
412 | if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR; | |
413 | node = acl_var_create(name); | |
414 | node->data.ptr = store_get(count + 1); | |
415 | if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; | |
416 | ((uschar*)node->data.ptr)[count] = 0; | |
417 | } | |
418 | ||
419 | else if (Ustrcmp(p, "llow_unqualified_recipient") == 0) | |
420 | allow_unqualified_recipient = TRUE; | |
421 | else if (Ustrcmp(p, "llow_unqualified_sender") == 0) | |
422 | allow_unqualified_sender = TRUE; | |
423 | ||
424 | else if (Ustrncmp(p, "uth_id", 6) == 0) | |
425 | authenticated_id = string_copy(big_buffer + 9); | |
426 | else if (Ustrncmp(p, "uth_sender", 10) == 0) | |
427 | authenticated_sender = string_copy(big_buffer + 13); | |
428 | else if (Ustrncmp(p, "ctive_hostname", 14) == 0) | |
429 | smtp_active_hostname = string_copy(big_buffer + 17); | |
430 | ||
431 | /* For long-term backward compatibility, we recognize "-acl", which was | |
432 | used before the number of ACL variables changed from 10 to 20. This was | |
433 | before the subsequent change to an arbitrary number of named variables. | |
434 | This code is retained so that upgrades from very old versions can still | |
435 | handle old-format spool files. The value given after "-acl" is a number | |
436 | that is 0-9 for connection variables, and 10-19 for message variables. */ | |
437 | ||
438 | else if (Ustrncmp(p, "cl ", 3) == 0) | |
439 | { | |
440 | int index, count; | |
8dce1a6f | 441 | uschar name[20]; /* Need plenty of space for %d format */ |
08955dd3 PH |
442 | tree_node *node; |
443 | if (sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2) | |
444 | goto SPOOL_FORMAT_ERROR; | |
8dce1a6f PH |
445 | if (index < 10) |
446 | (void) string_format(name, sizeof(name), "%c%d", 'c', index); | |
447 | else if (index < 20) /* ignore out-of-range index */ | |
448 | (void) string_format(name, sizeof(name), "%c%d", 'm', index - 10); | |
08955dd3 PH |
449 | node = acl_var_create(name); |
450 | node->data.ptr = store_get(count + 1); | |
451 | if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; | |
452 | ((uschar*)node->data.ptr)[count] = 0; | |
453 | } | |
454 | break; | |
455 | ||
456 | case 'b': | |
457 | if (Ustrncmp(p, "ody_linecount", 13) == 0) | |
458 | body_linecount = Uatoi(big_buffer + 15); | |
459 | else if (Ustrncmp(p, "ody_zerocount", 13) == 0) | |
460 | body_zerocount = Uatoi(big_buffer + 15); | |
461 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
462 | else if (Ustrncmp(p, "mi_verdicts ", 12) == 0) | |
463 | bmi_verdicts = string_copy(big_buffer + 14); | |
464 | #endif | |
465 | break; | |
466 | ||
467 | case 'd': | |
468 | if (Ustrcmp(p, "eliver_firsttime") == 0) | |
469 | deliver_firsttime = TRUE; | |
470 | break; | |
471 | ||
472 | case 'f': | |
473 | if (Ustrncmp(p, "rozen", 5) == 0) | |
474 | { | |
475 | deliver_freeze = TRUE; | |
476 | deliver_frozen_at = Uatoi(big_buffer + 7); | |
477 | } | |
478 | break; | |
479 | ||
480 | case 'h': | |
481 | if (Ustrcmp(p, "ost_lookup_deferred") == 0) | |
482 | host_lookup_deferred = TRUE; | |
483 | else if (Ustrcmp(p, "ost_lookup_failed") == 0) | |
484 | host_lookup_failed = TRUE; | |
485 | else if (Ustrncmp(p, "ost_auth", 8) == 0) | |
486 | sender_host_authenticated = string_copy(big_buffer + 11); | |
487 | else if (Ustrncmp(p, "ost_name", 8) == 0) | |
488 | sender_host_name = string_copy(big_buffer + 11); | |
489 | else if (Ustrncmp(p, "elo_name", 8) == 0) | |
490 | sender_helo_name = string_copy(big_buffer + 11); | |
491 | ||
492 | /* We now record the port number after the address, separated by a | |
493 | dot. For compatibility during upgrading, do nothing if there | |
494 | isn't a value (it gets left at zero). */ | |
495 | ||
496 | else if (Ustrncmp(p, "ost_address", 11) == 0) | |
497 | { | |
498 | sender_host_port = host_address_extract_port(big_buffer + 14); | |
499 | sender_host_address = string_copy(big_buffer + 14); | |
500 | } | |
501 | break; | |
502 | ||
503 | case 'i': | |
504 | if (Ustrncmp(p, "nterface_address", 16) == 0) | |
505 | { | |
506 | interface_port = host_address_extract_port(big_buffer + 19); | |
507 | interface_address = string_copy(big_buffer + 19); | |
508 | } | |
509 | else if (Ustrncmp(p, "dent", 4) == 0) | |
510 | sender_ident = string_copy(big_buffer + 7); | |
511 | break; | |
512 | ||
513 | case 'l': | |
514 | if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE; | |
515 | else if (Ustrcmp(big_buffer, "-localerror") == 0) | |
516 | local_error_message = TRUE; | |
517 | else if (Ustrncmp(p, "ocal_scan ", 10) == 0) | |
518 | local_scan_data = string_copy(big_buffer + 12); | |
519 | break; | |
520 | ||
521 | case 'm': | |
522 | if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE; | |
d677b2f2 PH |
523 | else if (Ustrncmp(p, "ax_received_linelength", 22) == 0) |
524 | max_received_linelength = Uatoi(big_buffer + 24); | |
08955dd3 PH |
525 | break; |
526 | ||
527 | case 'N': | |
528 | if (*p == 0) dont_deliver = TRUE; /* -N */ | |
529 | break; | |
530 | ||
531 | case 'r': | |
532 | if (Ustrncmp(p, "eceived_protocol", 16) == 0) | |
533 | received_protocol = string_copy(big_buffer + 19); | |
534 | break; | |
535 | ||
536 | case 's': | |
537 | if (Ustrncmp(p, "ender_set_untrusted", 19) == 0) | |
538 | sender_set_untrusted = TRUE; | |
539 | #ifdef WITH_CONTENT_SCAN | |
540 | else if (Ustrncmp(p, "pam_score_int ", 14) == 0) | |
541 | spam_score_int = string_copy(big_buffer + 16); | |
542 | #endif | |
543 | break; | |
544 | ||
545 | #ifdef SUPPORT_TLS | |
546 | case 't': | |
547 | if (Ustrncmp(p, "ls_certificate_verified", 23) == 0) | |
817d9f57 | 548 | tls_in.certificate_verified = TRUE; |
08955dd3 | 549 | else if (Ustrncmp(p, "ls_cipher", 9) == 0) |
817d9f57 | 550 | tls_in.cipher = string_copy(big_buffer + 12); |
08955dd3 | 551 | else if (Ustrncmp(p, "ls_peerdn", 9) == 0) |
817d9f57 | 552 | tls_in.peerdn = string_unprinting(string_copy(big_buffer + 12)); |
7be682ca | 553 | else if (Ustrncmp(p, "ls_sni", 6) == 0) |
817d9f57 | 554 | tls_in.sni = string_unprinting(string_copy(big_buffer + 9)); |
08955dd3 PH |
555 | break; |
556 | #endif | |
557 | ||
558 | default: /* Present because some compilers complain if all */ | |
559 | break; /* possibilities are not covered. */ | |
059ec3d9 | 560 | } |
059ec3d9 PH |
561 | } |
562 | ||
563 | /* Build sender_fullhost if required */ | |
564 | ||
565 | #ifndef COMPILE_UTILITY | |
566 | host_build_sender_fullhost(); | |
567 | #endif /* COMPILE_UTILITY */ | |
568 | ||
569 | #ifndef COMPILE_UTILITY | |
570 | DEBUG(D_deliver) | |
571 | debug_printf("sender_local=%d ident=%s\n", sender_local, | |
572 | (sender_ident == NULL)? US"unset" : sender_ident); | |
573 | #endif /* COMPILE_UTILITY */ | |
574 | ||
575 | /* We now have the tree of addresses NOT to deliver to, or a line | |
576 | containing "XX", indicating no tree. */ | |
577 | ||
578 | if (Ustrncmp(big_buffer, "XX\n", 3) != 0 && | |
579 | !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size)) | |
580 | goto SPOOL_FORMAT_ERROR; | |
581 | ||
582 | #ifndef COMPILE_UTILITY | |
583 | DEBUG(D_deliver) | |
584 | { | |
585 | debug_printf("Non-recipients:\n"); | |
586 | debug_print_tree(tree_nonrecipients); | |
587 | } | |
588 | #endif /* COMPILE_UTILITY */ | |
589 | ||
590 | /* After reading the tree, the next line has not yet been read into the | |
591 | buffer. It contains the count of recipients which follow on separate lines. */ | |
592 | ||
593 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
594 | if (sscanf(CS big_buffer, "%d", &rcount) != 1) goto SPOOL_FORMAT_ERROR; | |
595 | ||
596 | #ifndef COMPILE_UTILITY | |
597 | DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount); | |
598 | #endif /* COMPILE_UTILITY */ | |
599 | ||
600 | recipients_list_max = rcount; | |
601 | recipients_list = store_get(rcount * sizeof(recipient_item)); | |
602 | ||
603 | for (recipients_count = 0; recipients_count < rcount; recipients_count++) | |
604 | { | |
605 | int nn; | |
606 | int pno = -1; | |
607 | uschar *errors_to = NULL; | |
608 | uschar *p; | |
609 | ||
610 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
611 | nn = Ustrlen(big_buffer); | |
612 | if (nn < 2) goto SPOOL_FORMAT_ERROR; | |
613 | ||
614 | /* Remove the newline; this terminates the address if there is no additional | |
615 | data on the line. */ | |
616 | ||
617 | p = big_buffer + nn - 1; | |
618 | *p-- = 0; | |
619 | ||
620 | /* Look back from the end of the line for digits and special terminators. | |
621 | Since an address must end with a domain, we can tell that extra data is | |
622 | present by the presence of the terminator, which is always some character | |
623 | that cannot exist in a domain. (If I'd thought of the need for additional | |
624 | data early on, I'd have put it at the start, with the address at the end. As | |
625 | it is, we have to operate backwards. Addresses are permitted to contain | |
626 | spaces, you see.) | |
627 | ||
628 | This code has to cope with various versions of this data that have evolved | |
629 | over time. In all cases, the line might just contain an address, with no | |
630 | additional data. Otherwise, the possibilities are as follows: | |
631 | ||
632 | Exim 3 type: <address><space><digits>,<digits>,<digits> | |
633 | ||
634 | The second set of digits is the parent number for one_time addresses. The | |
635 | other values were remnants of earlier experiments that were abandoned. | |
636 | ||
637 | Exim 4 first type: <address><space><digits> | |
638 | ||
639 | The digits are the parent number for one_time addresses. | |
640 | ||
641 | Exim 4 new type: <address><space><data>#<type bits> | |
642 | ||
643 | The type bits indicate what the contents of the data are. | |
644 | ||
645 | Bit 01 indicates that, reading from right to left, the data | |
646 | ends with <errors_to address><space><len>,<pno> where pno is | |
647 | the parent number for one_time addresses, and len is the length | |
648 | of the errors_to address (zero meaning none). | |
649 | */ | |
650 | ||
651 | while (isdigit(*p)) p--; | |
652 | ||
653 | /* Handle Exim 3 spool files */ | |
654 | ||
655 | if (*p == ',') | |
656 | { | |
657 | int dummy; | |
658 | while (isdigit(*(--p)) || *p == ','); | |
659 | if (*p == ' ') | |
660 | { | |
661 | *p++ = 0; | |
ff790e47 | 662 | (void)sscanf(CS p, "%d,%d", &dummy, &pno); |
059ec3d9 PH |
663 | } |
664 | } | |
665 | ||
666 | /* Handle early Exim 4 spool files */ | |
667 | ||
668 | else if (*p == ' ') | |
669 | { | |
670 | *p++ = 0; | |
ff790e47 | 671 | (void)sscanf(CS p, "%d", &pno); |
059ec3d9 PH |
672 | } |
673 | ||
674 | /* Handle current format Exim 4 spool files */ | |
675 | ||
676 | else if (*p == '#') | |
677 | { | |
678 | int flags; | |
ff790e47 | 679 | (void)sscanf(CS p+1, "%d", &flags); |
059ec3d9 PH |
680 | |
681 | if ((flags & 0x01) != 0) /* one_time data exists */ | |
682 | { | |
683 | int len; | |
684 | while (isdigit(*(--p)) || *p == ',' || *p == '-'); | |
ff790e47 | 685 | (void)sscanf(CS p+1, "%d,%d", &len, &pno); |
059ec3d9 PH |
686 | *p = 0; |
687 | if (len > 0) | |
688 | { | |
689 | p -= len; | |
690 | errors_to = string_copy(p); | |
691 | } | |
692 | } | |
693 | ||
694 | *(--p) = 0; /* Terminate address */ | |
695 | } | |
696 | ||
697 | recipients_list[recipients_count].address = string_copy(big_buffer); | |
698 | recipients_list[recipients_count].pno = pno; | |
699 | recipients_list[recipients_count].errors_to = errors_to; | |
700 | } | |
701 | ||
702 | /* The remainder of the spool header file contains the headers for the message, | |
703 | separated off from the previous data by a blank line. Each header is preceded | |
704 | by a count of its length and either a certain letter (for various identified | |
705 | headers), space (for a miscellaneous live header) or an asterisk (for a header | |
706 | that has been rewritten). Count the Received: headers. We read the headers | |
707 | always, in order to check on the format of the file, but only create a header | |
708 | list if requested to do so. */ | |
709 | ||
710 | inheader = TRUE; | |
711 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
712 | if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR; | |
713 | ||
714 | while ((n = fgetc(f)) != EOF) | |
715 | { | |
716 | header_line *h; | |
717 | uschar flag[4]; | |
718 | int i; | |
719 | ||
720 | if (!isdigit(n)) goto SPOOL_FORMAT_ERROR; | |
ff790e47 PH |
721 | (void)ungetc(n, f); |
722 | (void)fscanf(f, "%d%c ", &n, flag); | |
059ec3d9 PH |
723 | if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */ |
724 | ||
725 | if (read_headers) | |
726 | { | |
727 | h = store_get(sizeof(header_line)); | |
728 | h->next = NULL; | |
729 | h->type = flag[0]; | |
730 | h->slen = n; | |
731 | h->text = store_get(n+1); | |
732 | ||
733 | if (h->type == htype_received) received_count++; | |
734 | ||
735 | if (header_list == NULL) header_list = h; | |
736 | else header_last->next = h; | |
737 | header_last = h; | |
738 | ||
739 | for (i = 0; i < n; i++) | |
740 | { | |
741 | int c = fgetc(f); | |
742 | if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR; | |
743 | if (c == '\n' && h->type != htype_old) message_linecount++; | |
744 | h->text[i] = c; | |
745 | } | |
746 | h->text[i] = 0; | |
747 | } | |
748 | ||
749 | /* Not requiring header data, just skip through the bytes */ | |
750 | ||
751 | else for (i = 0; i < n; i++) | |
752 | { | |
753 | int c = fgetc(f); | |
754 | if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR; | |
755 | } | |
756 | } | |
757 | ||
758 | /* We have successfully read the data in the header file. Update the message | |
759 | line count by adding the body linecount to the header linecount. Close the file | |
760 | and give a positive response. */ | |
761 | ||
762 | #ifndef COMPILE_UTILITY | |
763 | DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n", | |
764 | body_linecount, message_linecount); | |
765 | #endif /* COMPILE_UTILITY */ | |
766 | ||
767 | message_linecount += body_linecount; | |
768 | ||
769 | fclose(f); | |
770 | return spool_read_OK; | |
771 | ||
772 | ||
773 | /* There was an error reading the spool or there was missing data, | |
774 | or there was a format error. A "read error" with no errno means an | |
775 | unexpected EOF, which we treat as a format error. */ | |
776 | ||
777 | SPOOL_READ_ERROR: | |
778 | if (errno != 0) | |
779 | { | |
780 | n = errno; | |
781 | ||
782 | #ifndef COMPILE_UTILITY | |
783 | DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name); | |
784 | #endif /* COMPILE_UTILITY */ | |
785 | ||
786 | fclose(f); | |
787 | errno = n; | |
788 | return inheader? spool_read_hdrerror : spool_read_enverror; | |
789 | } | |
790 | ||
791 | SPOOL_FORMAT_ERROR: | |
792 | ||
793 | #ifndef COMPILE_UTILITY | |
794 | DEBUG(D_any) debug_printf("Format error in spool file %s\n", name); | |
795 | #endif /* COMPILE_UTILITY */ | |
796 | ||
797 | fclose(f); | |
798 | errno = ERRNO_SPOOLFORMAT; | |
799 | return inheader? spool_read_hdrerror : spool_read_enverror; | |
800 | } | |
801 | ||
802 | /* End of spool_in.c */ |