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0a49a7a4 | 1 | /* $Cambridge: exim/src/src/spool_in.c,v 1.26 2009/11/16 19:50:37 nm4 Exp $ */ |
059ec3d9 PH |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
0a49a7a4 | 7 | /* Copyright (c) University of Cambridge 1995 - 2009 */ |
059ec3d9 PH |
8 | /* See the file NOTICE for conditions of use and distribution. */ |
9 | ||
10 | /* Functions for reading spool files. When compiling for a utility (eximon), | |
11 | not all are needed, and some functionality can be cut out. */ | |
12 | ||
13 | ||
14 | #include "exim.h" | |
15 | ||
16 | ||
17 | ||
18 | #ifndef COMPILE_UTILITY | |
19 | /************************************************* | |
20 | * Open and lock data file * | |
21 | *************************************************/ | |
22 | ||
23 | /* The data file is the one that is used for locking, because the header file | |
24 | can get replaced during delivery because of header rewriting. The file has | |
25 | to opened with write access so that we can get an exclusive lock, but in | |
26 | fact it won't be written to. Just in case there's a major disaster (e.g. | |
27 | overwriting some other file descriptor with the value of this one), open it | |
28 | with append. | |
29 | ||
30 | Argument: the id of the message | |
31 | Returns: TRUE if file successfully opened and locked | |
32 | ||
33 | Side effect: deliver_datafile is set to the fd of the open file. | |
34 | */ | |
35 | ||
36 | BOOL | |
37 | spool_open_datafile(uschar *id) | |
38 | { | |
39 | int i; | |
40 | struct stat statbuf; | |
41 | flock_t lock_data; | |
42 | uschar spoolname[256]; | |
43 | ||
44 | /* If split_spool_directory is set, first look for the file in the appropriate | |
45 | sub-directory of the input directory. If it is not found there, try the input | |
46 | directory itself, to pick up leftovers from before the splitting. If split_ | |
47 | spool_directory is not set, first look in the main input directory. If it is | |
48 | not found there, try the split sub-directory, in case it is left over from a | |
49 | splitting state. */ | |
50 | ||
51 | for (i = 0; i < 2; i++) | |
52 | { | |
53 | int save_errno; | |
54 | message_subdir[0] = (split_spool_directory == (i == 0))? id[5] : 0; | |
55 | sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id); | |
56 | deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0); | |
57 | if (deliver_datafile >= 0) break; | |
58 | save_errno = errno; | |
59 | if (errno == ENOENT) | |
60 | { | |
61 | if (i == 0) continue; | |
62 | if (!queue_running) | |
63 | log_write(0, LOG_MAIN, "Spool file %s-D not found", id); | |
64 | } | |
65 | else log_write(0, LOG_MAIN, "Spool error for %s: %s", spoolname, | |
66 | strerror(errno)); | |
67 | errno = save_errno; | |
68 | return FALSE; | |
69 | } | |
70 | ||
71 | /* File is open and message_subdir is set. Set the close-on-exec flag, and lock | |
72 | the file. We lock only the first line of the file (containing the message ID) | |
73 | because this apparently is needed for running Exim under Cygwin. If the entire | |
74 | file is locked in one process, a sub-process cannot access it, even when passed | |
75 | an open file descriptor (at least, I think that's the Cygwin story). On real | |
76 | Unix systems it doesn't make any difference as long as Exim is consistent in | |
77 | what it locks. */ | |
78 | ||
ff790e47 | 79 | (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | |
059ec3d9 PH |
80 | FD_CLOEXEC); |
81 | ||
82 | lock_data.l_type = F_WRLCK; | |
83 | lock_data.l_whence = SEEK_SET; | |
84 | lock_data.l_start = 0; | |
85 | lock_data.l_len = SPOOL_DATA_START_OFFSET; | |
86 | ||
87 | if (fcntl(deliver_datafile, F_SETLK, &lock_data) < 0) | |
88 | { | |
89 | log_write(L_skip_delivery, | |
90 | LOG_MAIN, | |
91 | "Spool file is locked (another process is handling this message)"); | |
f1e894f3 | 92 | (void)close(deliver_datafile); |
059ec3d9 PH |
93 | deliver_datafile = -1; |
94 | errno = 0; | |
95 | return FALSE; | |
96 | } | |
97 | ||
98 | /* Get the size of the data; don't include the leading filename line | |
99 | in the count, but add one for the newline before the data. */ | |
100 | ||
101 | if (fstat(deliver_datafile, &statbuf) == 0) | |
102 | { | |
103 | message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET; | |
104 | message_size = message_body_size + 1; | |
105 | } | |
106 | ||
107 | return TRUE; | |
108 | } | |
109 | #endif /* COMPILE_UTILITY */ | |
110 | ||
111 | ||
112 | ||
113 | /************************************************* | |
114 | * Read non-recipients tree from spool file * | |
115 | *************************************************/ | |
116 | ||
117 | /* The tree of non-recipients is written to the spool file in a form that | |
118 | makes it easy to read back into a tree. The format is as follows: | |
119 | ||
120 | . Each node is preceded by two letter(Y/N) indicating whether it has left | |
121 | or right children. There's one space after the two flags, before the name. | |
122 | ||
123 | . The left subtree (if any) then follows, then the right subtree (if any). | |
124 | ||
125 | This function is entered with the next input line in the buffer. Note we must | |
126 | save the right flag before recursing with the same buffer. | |
127 | ||
128 | Once the tree is read, we re-construct the balance fields by scanning the tree. | |
129 | I forgot to write them out originally, and the compatible fix is to do it this | |
130 | way. This initial local recursing function does the necessary. | |
131 | ||
132 | Arguments: | |
133 | node tree node | |
134 | ||
135 | Returns: maximum depth below the node, including the node itself | |
136 | */ | |
137 | ||
138 | static int | |
139 | count_below(tree_node *node) | |
140 | { | |
141 | int nleft, nright; | |
142 | if (node == NULL) return 0; | |
143 | nleft = count_below(node->left); | |
144 | nright = count_below(node->right); | |
145 | node->balance = (nleft > nright)? 1 : ((nright > nleft)? 2 : 0); | |
146 | return 1 + ((nleft > nright)? nleft : nright); | |
147 | } | |
148 | ||
149 | /* This is the real function... | |
150 | ||
151 | Arguments: | |
152 | connect pointer to the root of the tree | |
153 | f FILE to read data from | |
154 | buffer contains next input line; further lines read into it | |
155 | buffer_size size of the buffer | |
156 | ||
157 | Returns: FALSE on format error | |
158 | */ | |
159 | ||
160 | static BOOL | |
161 | read_nonrecipients_tree(tree_node **connect, FILE *f, uschar *buffer, | |
162 | int buffer_size) | |
163 | { | |
164 | tree_node *node; | |
165 | int n = Ustrlen(buffer); | |
166 | BOOL right = buffer[1] == 'Y'; | |
167 | ||
168 | if (n < 5) return FALSE; /* malformed line */ | |
169 | buffer[n-1] = 0; /* Remove \n */ | |
170 | node = store_get(sizeof(tree_node) + n - 3); | |
171 | *connect = node; | |
172 | Ustrcpy(node->name, buffer + 3); | |
173 | node->data.ptr = NULL; | |
174 | ||
175 | if (buffer[0] == 'Y') | |
176 | { | |
177 | if (Ufgets(buffer, buffer_size, f) == NULL || | |
178 | !read_nonrecipients_tree(&node->left, f, buffer, buffer_size)) | |
179 | return FALSE; | |
180 | } | |
181 | else node->left = NULL; | |
182 | ||
183 | if (right) | |
184 | { | |
185 | if (Ufgets(buffer, buffer_size, f) == NULL || | |
186 | !read_nonrecipients_tree(&node->right, f, buffer, buffer_size)) | |
187 | return FALSE; | |
188 | } | |
189 | else node->right = NULL; | |
190 | ||
191 | (void) count_below(*connect); | |
192 | return TRUE; | |
193 | } | |
194 | ||
195 | ||
196 | ||
197 | ||
198 | /************************************************* | |
199 | * Read spool header file * | |
200 | *************************************************/ | |
201 | ||
202 | /* This function reads a spool header file and places the data into the | |
203 | appropriate global variables. The header portion is always read, but header | |
204 | structures are built only if read_headers is set true. It isn't, for example, | |
205 | while generating -bp output. | |
206 | ||
207 | It may be possible for blocks of nulls (binary zeroes) to get written on the | |
208 | end of a file if there is a system crash during writing. It was observed on an | |
209 | earlier version of Exim that omitted to fsync() the files - this is thought to | |
210 | have been the cause of that incident, but in any case, this code must be robust | |
211 | against such an event, and if such a file is encountered, it must be treated as | |
212 | malformed. | |
213 | ||
214 | Arguments: | |
215 | name name of the header file, including the -H | |
216 | read_headers TRUE if in-store header structures are to be built | |
217 | subdir_set TRUE is message_subdir is already set | |
218 | ||
219 | Returns: spool_read_OK success | |
220 | spool_read_notopen open failed | |
221 | spool_read_enverror error in the envelope portion | |
222 | spool_read_hdrdrror error in the header portion | |
223 | */ | |
224 | ||
225 | int | |
226 | spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set) | |
227 | { | |
228 | FILE *f = NULL; | |
229 | int n; | |
230 | int rcount = 0; | |
231 | long int uid, gid; | |
232 | BOOL inheader = FALSE; | |
1e70f85b | 233 | uschar *p; |
059ec3d9 PH |
234 | |
235 | /* Reset all the global variables to their default values. However, there is | |
236 | one exception. DO NOT change the default value of dont_deliver, because it may | |
237 | be forced by an external setting. */ | |
238 | ||
38a0a95f | 239 | acl_var_c = acl_var_m = NULL; |
059ec3d9 PH |
240 | authenticated_id = NULL; |
241 | authenticated_sender = NULL; | |
242 | allow_unqualified_recipient = FALSE; | |
243 | allow_unqualified_sender = FALSE; | |
244 | body_linecount = 0; | |
245 | body_zerocount = 0; | |
246 | deliver_firsttime = FALSE; | |
247 | deliver_freeze = FALSE; | |
248 | deliver_frozen_at = 0; | |
249 | deliver_manual_thaw = FALSE; | |
250 | /* dont_deliver must NOT be reset */ | |
251 | header_list = header_last = NULL; | |
b08b24c8 | 252 | host_lookup_deferred = FALSE; |
059ec3d9 PH |
253 | host_lookup_failed = FALSE; |
254 | interface_address = NULL; | |
255 | interface_port = 0; | |
256 | local_error_message = FALSE; | |
257 | local_scan_data = NULL; | |
d677b2f2 | 258 | max_received_linelength = 0; |
059ec3d9 PH |
259 | message_linecount = 0; |
260 | received_protocol = NULL; | |
261 | received_count = 0; | |
262 | recipients_list = NULL; | |
263 | sender_address = NULL; | |
264 | sender_fullhost = NULL; | |
265 | sender_helo_name = NULL; | |
266 | sender_host_address = NULL; | |
267 | sender_host_name = NULL; | |
268 | sender_host_port = 0; | |
269 | sender_host_authenticated = NULL; | |
270 | sender_ident = NULL; | |
271 | sender_local = FALSE; | |
272 | sender_set_untrusted = FALSE; | |
1f5b4c3d | 273 | smtp_active_hostname = primary_hostname; |
059ec3d9 PH |
274 | tree_nonrecipients = NULL; |
275 | ||
8523533c TK |
276 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
277 | bmi_run = 0; | |
278 | bmi_verdicts = NULL; | |
279 | #endif | |
280 | ||
80a47a2c | 281 | #ifndef DISABLE_DKIM |
9e5d6b55 | 282 | dkim_signers = NULL; |
80a47a2c TK |
283 | dkim_disable_verify = FALSE; |
284 | dkim_collect_input = FALSE; | |
f7572e5a TK |
285 | #endif |
286 | ||
059ec3d9 PH |
287 | #ifdef SUPPORT_TLS |
288 | tls_certificate_verified = FALSE; | |
289 | tls_cipher = NULL; | |
290 | tls_peerdn = NULL; | |
291 | #endif | |
292 | ||
8523533c | 293 | #ifdef WITH_CONTENT_SCAN |
8523533c TK |
294 | spam_score_int = NULL; |
295 | #endif | |
296 | ||
059ec3d9 PH |
297 | /* Generate the full name and open the file. If message_subdir is already |
298 | set, just look in the given directory. Otherwise, look in both the split | |
299 | and unsplit directories, as for the data file above. */ | |
300 | ||
301 | for (n = 0; n < 2; n++) | |
302 | { | |
303 | if (!subdir_set) | |
304 | message_subdir[0] = (split_spool_directory == (n == 0))? name[5] : 0; | |
305 | sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir, | |
306 | name); | |
307 | f = Ufopen(big_buffer, "rb"); | |
308 | if (f != NULL) break; | |
309 | if (n != 0 || subdir_set || errno != ENOENT) return spool_read_notopen; | |
310 | } | |
311 | ||
312 | errno = 0; | |
313 | ||
314 | #ifndef COMPILE_UTILITY | |
315 | DEBUG(D_deliver) debug_printf("reading spool file %s\n", name); | |
316 | #endif /* COMPILE_UTILITY */ | |
317 | ||
318 | /* The first line of a spool file contains the message id followed by -H (i.e. | |
319 | the file name), in order to make the file self-identifying. */ | |
320 | ||
321 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
322 | if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 || | |
323 | Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0) | |
324 | goto SPOOL_FORMAT_ERROR; | |
325 | ||
326 | /* The next three lines in the header file are in a fixed format. The first | |
327 | contains the login, uid, and gid of the user who caused the file to be written. | |
ebb6e6d5 PH |
328 | There are known cases where a negative gid is used, so we allow for both |
329 | negative uids and gids. The second contains the mail address of the message's | |
330 | sender, enclosed in <>. The third contains the time the message was received, | |
331 | and the number of warning messages for delivery delays that have been sent. */ | |
059ec3d9 PH |
332 | |
333 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
334 | ||
1e70f85b PH |
335 | p = big_buffer + Ustrlen(big_buffer); |
336 | while (p > big_buffer && isspace(p[-1])) p--; | |
337 | *p = 0; | |
338 | if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; | |
ebb6e6d5 | 339 | while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; |
1e70f85b PH |
340 | gid = Uatoi(p); |
341 | if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; | |
342 | *p = 0; | |
343 | if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; | |
ebb6e6d5 | 344 | while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; |
1e70f85b PH |
345 | uid = Uatoi(p); |
346 | if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; | |
347 | *p = 0; | |
8e669ac1 | 348 | |
1e70f85b | 349 | originator_login = string_copy(big_buffer); |
059ec3d9 PH |
350 | originator_uid = (uid_t)uid; |
351 | originator_gid = (gid_t)gid; | |
352 | ||
353 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
354 | n = Ustrlen(big_buffer); | |
355 | if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>') | |
356 | goto SPOOL_FORMAT_ERROR; | |
357 | ||
358 | sender_address = store_get(n-2); | |
359 | Ustrncpy(sender_address, big_buffer+1, n-3); | |
360 | sender_address[n-3] = 0; | |
361 | ||
362 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
363 | if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2) | |
364 | goto SPOOL_FORMAT_ERROR; | |
365 | ||
366 | message_age = time(NULL) - received_time; | |
367 | ||
368 | #ifndef COMPILE_UTILITY | |
369 | DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n", | |
370 | originator_login, (long int)originator_uid, (long int)originator_gid, | |
371 | sender_address); | |
372 | #endif /* COMPILE_UTILITY */ | |
373 | ||
08955dd3 PH |
374 | /* Now there may be a number of optional lines, each starting with "-". If you |
375 | add a new setting here, make sure you set the default above. | |
059ec3d9 | 376 | |
08955dd3 PH |
377 | Because there are now quite a number of different possibilities, we use a |
378 | switch on the first character to avoid too many failing tests. Thanks to Nico | |
379 | Erfurth for the patch that implemented this. I have made it even more efficient | |
380 | by not re-scanning the first two characters. | |
381 | ||
382 | To allow new versions of Exim that add additional flags to interwork with older | |
383 | versions that do not understand them, just ignore any lines starting with "-" | |
384 | that we don't recognize. Otherwise it wouldn't be possible to back off a new | |
385 | version that left new-style flags written on the spool. */ | |
386 | ||
387 | p = big_buffer + 2; | |
059ec3d9 PH |
388 | for (;;) |
389 | { | |
390 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
391 | if (big_buffer[0] != '-') break; | |
059ec3d9 | 392 | big_buffer[Ustrlen(big_buffer) - 1] = 0; |
47ca6d6c | 393 | |
08955dd3 | 394 | switch(big_buffer[1]) |
059ec3d9 | 395 | { |
08955dd3 PH |
396 | case 'a': |
397 | ||
398 | /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL | |
399 | variable, because Exim allows any number of them, with arbitrary names. | |
400 | The line in the spool file is "-acl[cm] <name> <length>". The name excludes | |
401 | the c or m. */ | |
402 | ||
403 | if (Ustrncmp(p, "clc ", 4) == 0 || | |
404 | Ustrncmp(p, "clm ", 4) == 0) | |
405 | { | |
406 | uschar *name, *endptr; | |
407 | int count; | |
408 | tree_node *node; | |
409 | endptr = Ustrchr(big_buffer + 6, ' '); | |
410 | if (endptr == NULL) goto SPOOL_FORMAT_ERROR; | |
411 | name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6, | |
412 | big_buffer + 6); | |
413 | if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR; | |
414 | node = acl_var_create(name); | |
415 | node->data.ptr = store_get(count + 1); | |
416 | if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; | |
417 | ((uschar*)node->data.ptr)[count] = 0; | |
418 | } | |
419 | ||
420 | else if (Ustrcmp(p, "llow_unqualified_recipient") == 0) | |
421 | allow_unqualified_recipient = TRUE; | |
422 | else if (Ustrcmp(p, "llow_unqualified_sender") == 0) | |
423 | allow_unqualified_sender = TRUE; | |
424 | ||
425 | else if (Ustrncmp(p, "uth_id", 6) == 0) | |
426 | authenticated_id = string_copy(big_buffer + 9); | |
427 | else if (Ustrncmp(p, "uth_sender", 10) == 0) | |
428 | authenticated_sender = string_copy(big_buffer + 13); | |
429 | else if (Ustrncmp(p, "ctive_hostname", 14) == 0) | |
430 | smtp_active_hostname = string_copy(big_buffer + 17); | |
431 | ||
432 | /* For long-term backward compatibility, we recognize "-acl", which was | |
433 | used before the number of ACL variables changed from 10 to 20. This was | |
434 | before the subsequent change to an arbitrary number of named variables. | |
435 | This code is retained so that upgrades from very old versions can still | |
436 | handle old-format spool files. The value given after "-acl" is a number | |
437 | that is 0-9 for connection variables, and 10-19 for message variables. */ | |
438 | ||
439 | else if (Ustrncmp(p, "cl ", 3) == 0) | |
440 | { | |
441 | int index, count; | |
8dce1a6f | 442 | uschar name[20]; /* Need plenty of space for %d format */ |
08955dd3 PH |
443 | tree_node *node; |
444 | if (sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2) | |
445 | goto SPOOL_FORMAT_ERROR; | |
8dce1a6f PH |
446 | if (index < 10) |
447 | (void) string_format(name, sizeof(name), "%c%d", 'c', index); | |
448 | else if (index < 20) /* ignore out-of-range index */ | |
449 | (void) string_format(name, sizeof(name), "%c%d", 'm', index - 10); | |
08955dd3 PH |
450 | node = acl_var_create(name); |
451 | node->data.ptr = store_get(count + 1); | |
452 | if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; | |
453 | ((uschar*)node->data.ptr)[count] = 0; | |
454 | } | |
455 | break; | |
456 | ||
457 | case 'b': | |
458 | if (Ustrncmp(p, "ody_linecount", 13) == 0) | |
459 | body_linecount = Uatoi(big_buffer + 15); | |
460 | else if (Ustrncmp(p, "ody_zerocount", 13) == 0) | |
461 | body_zerocount = Uatoi(big_buffer + 15); | |
462 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
463 | else if (Ustrncmp(p, "mi_verdicts ", 12) == 0) | |
464 | bmi_verdicts = string_copy(big_buffer + 14); | |
465 | #endif | |
466 | break; | |
467 | ||
468 | case 'd': | |
469 | if (Ustrcmp(p, "eliver_firsttime") == 0) | |
470 | deliver_firsttime = TRUE; | |
471 | break; | |
472 | ||
473 | case 'f': | |
474 | if (Ustrncmp(p, "rozen", 5) == 0) | |
475 | { | |
476 | deliver_freeze = TRUE; | |
477 | deliver_frozen_at = Uatoi(big_buffer + 7); | |
478 | } | |
479 | break; | |
480 | ||
481 | case 'h': | |
482 | if (Ustrcmp(p, "ost_lookup_deferred") == 0) | |
483 | host_lookup_deferred = TRUE; | |
484 | else if (Ustrcmp(p, "ost_lookup_failed") == 0) | |
485 | host_lookup_failed = TRUE; | |
486 | else if (Ustrncmp(p, "ost_auth", 8) == 0) | |
487 | sender_host_authenticated = string_copy(big_buffer + 11); | |
488 | else if (Ustrncmp(p, "ost_name", 8) == 0) | |
489 | sender_host_name = string_copy(big_buffer + 11); | |
490 | else if (Ustrncmp(p, "elo_name", 8) == 0) | |
491 | sender_helo_name = string_copy(big_buffer + 11); | |
492 | ||
493 | /* We now record the port number after the address, separated by a | |
494 | dot. For compatibility during upgrading, do nothing if there | |
495 | isn't a value (it gets left at zero). */ | |
496 | ||
497 | else if (Ustrncmp(p, "ost_address", 11) == 0) | |
498 | { | |
499 | sender_host_port = host_address_extract_port(big_buffer + 14); | |
500 | sender_host_address = string_copy(big_buffer + 14); | |
501 | } | |
502 | break; | |
503 | ||
504 | case 'i': | |
505 | if (Ustrncmp(p, "nterface_address", 16) == 0) | |
506 | { | |
507 | interface_port = host_address_extract_port(big_buffer + 19); | |
508 | interface_address = string_copy(big_buffer + 19); | |
509 | } | |
510 | else if (Ustrncmp(p, "dent", 4) == 0) | |
511 | sender_ident = string_copy(big_buffer + 7); | |
512 | break; | |
513 | ||
514 | case 'l': | |
515 | if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE; | |
516 | else if (Ustrcmp(big_buffer, "-localerror") == 0) | |
517 | local_error_message = TRUE; | |
518 | else if (Ustrncmp(p, "ocal_scan ", 10) == 0) | |
519 | local_scan_data = string_copy(big_buffer + 12); | |
520 | break; | |
521 | ||
522 | case 'm': | |
523 | if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE; | |
d677b2f2 PH |
524 | else if (Ustrncmp(p, "ax_received_linelength", 22) == 0) |
525 | max_received_linelength = Uatoi(big_buffer + 24); | |
08955dd3 PH |
526 | break; |
527 | ||
528 | case 'N': | |
529 | if (*p == 0) dont_deliver = TRUE; /* -N */ | |
530 | break; | |
531 | ||
532 | case 'r': | |
533 | if (Ustrncmp(p, "eceived_protocol", 16) == 0) | |
534 | received_protocol = string_copy(big_buffer + 19); | |
535 | break; | |
536 | ||
537 | case 's': | |
538 | if (Ustrncmp(p, "ender_set_untrusted", 19) == 0) | |
539 | sender_set_untrusted = TRUE; | |
540 | #ifdef WITH_CONTENT_SCAN | |
541 | else if (Ustrncmp(p, "pam_score_int ", 14) == 0) | |
542 | spam_score_int = string_copy(big_buffer + 16); | |
543 | #endif | |
544 | break; | |
545 | ||
546 | #ifdef SUPPORT_TLS | |
547 | case 't': | |
548 | if (Ustrncmp(p, "ls_certificate_verified", 23) == 0) | |
549 | tls_certificate_verified = TRUE; | |
550 | else if (Ustrncmp(p, "ls_cipher", 9) == 0) | |
551 | tls_cipher = string_copy(big_buffer + 12); | |
552 | else if (Ustrncmp(p, "ls_peerdn", 9) == 0) | |
553 | tls_peerdn = string_copy(big_buffer + 12); | |
554 | break; | |
555 | #endif | |
556 | ||
557 | default: /* Present because some compilers complain if all */ | |
558 | break; /* possibilities are not covered. */ | |
059ec3d9 | 559 | } |
059ec3d9 PH |
560 | } |
561 | ||
562 | /* Build sender_fullhost if required */ | |
563 | ||
564 | #ifndef COMPILE_UTILITY | |
565 | host_build_sender_fullhost(); | |
566 | #endif /* COMPILE_UTILITY */ | |
567 | ||
568 | #ifndef COMPILE_UTILITY | |
569 | DEBUG(D_deliver) | |
570 | debug_printf("sender_local=%d ident=%s\n", sender_local, | |
571 | (sender_ident == NULL)? US"unset" : sender_ident); | |
572 | #endif /* COMPILE_UTILITY */ | |
573 | ||
574 | /* We now have the tree of addresses NOT to deliver to, or a line | |
575 | containing "XX", indicating no tree. */ | |
576 | ||
577 | if (Ustrncmp(big_buffer, "XX\n", 3) != 0 && | |
578 | !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size)) | |
579 | goto SPOOL_FORMAT_ERROR; | |
580 | ||
581 | #ifndef COMPILE_UTILITY | |
582 | DEBUG(D_deliver) | |
583 | { | |
584 | debug_printf("Non-recipients:\n"); | |
585 | debug_print_tree(tree_nonrecipients); | |
586 | } | |
587 | #endif /* COMPILE_UTILITY */ | |
588 | ||
589 | /* After reading the tree, the next line has not yet been read into the | |
590 | buffer. It contains the count of recipients which follow on separate lines. */ | |
591 | ||
592 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
593 | if (sscanf(CS big_buffer, "%d", &rcount) != 1) goto SPOOL_FORMAT_ERROR; | |
594 | ||
595 | #ifndef COMPILE_UTILITY | |
596 | DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount); | |
597 | #endif /* COMPILE_UTILITY */ | |
598 | ||
599 | recipients_list_max = rcount; | |
600 | recipients_list = store_get(rcount * sizeof(recipient_item)); | |
601 | ||
602 | for (recipients_count = 0; recipients_count < rcount; recipients_count++) | |
603 | { | |
604 | int nn; | |
605 | int pno = -1; | |
606 | uschar *errors_to = NULL; | |
607 | uschar *p; | |
608 | ||
609 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
610 | nn = Ustrlen(big_buffer); | |
611 | if (nn < 2) goto SPOOL_FORMAT_ERROR; | |
612 | ||
613 | /* Remove the newline; this terminates the address if there is no additional | |
614 | data on the line. */ | |
615 | ||
616 | p = big_buffer + nn - 1; | |
617 | *p-- = 0; | |
618 | ||
619 | /* Look back from the end of the line for digits and special terminators. | |
620 | Since an address must end with a domain, we can tell that extra data is | |
621 | present by the presence of the terminator, which is always some character | |
622 | that cannot exist in a domain. (If I'd thought of the need for additional | |
623 | data early on, I'd have put it at the start, with the address at the end. As | |
624 | it is, we have to operate backwards. Addresses are permitted to contain | |
625 | spaces, you see.) | |
626 | ||
627 | This code has to cope with various versions of this data that have evolved | |
628 | over time. In all cases, the line might just contain an address, with no | |
629 | additional data. Otherwise, the possibilities are as follows: | |
630 | ||
631 | Exim 3 type: <address><space><digits>,<digits>,<digits> | |
632 | ||
633 | The second set of digits is the parent number for one_time addresses. The | |
634 | other values were remnants of earlier experiments that were abandoned. | |
635 | ||
636 | Exim 4 first type: <address><space><digits> | |
637 | ||
638 | The digits are the parent number for one_time addresses. | |
639 | ||
640 | Exim 4 new type: <address><space><data>#<type bits> | |
641 | ||
642 | The type bits indicate what the contents of the data are. | |
643 | ||
644 | Bit 01 indicates that, reading from right to left, the data | |
645 | ends with <errors_to address><space><len>,<pno> where pno is | |
646 | the parent number for one_time addresses, and len is the length | |
647 | of the errors_to address (zero meaning none). | |
648 | */ | |
649 | ||
650 | while (isdigit(*p)) p--; | |
651 | ||
652 | /* Handle Exim 3 spool files */ | |
653 | ||
654 | if (*p == ',') | |
655 | { | |
656 | int dummy; | |
657 | while (isdigit(*(--p)) || *p == ','); | |
658 | if (*p == ' ') | |
659 | { | |
660 | *p++ = 0; | |
ff790e47 | 661 | (void)sscanf(CS p, "%d,%d", &dummy, &pno); |
059ec3d9 PH |
662 | } |
663 | } | |
664 | ||
665 | /* Handle early Exim 4 spool files */ | |
666 | ||
667 | else if (*p == ' ') | |
668 | { | |
669 | *p++ = 0; | |
ff790e47 | 670 | (void)sscanf(CS p, "%d", &pno); |
059ec3d9 PH |
671 | } |
672 | ||
673 | /* Handle current format Exim 4 spool files */ | |
674 | ||
675 | else if (*p == '#') | |
676 | { | |
677 | int flags; | |
ff790e47 | 678 | (void)sscanf(CS p+1, "%d", &flags); |
059ec3d9 PH |
679 | |
680 | if ((flags & 0x01) != 0) /* one_time data exists */ | |
681 | { | |
682 | int len; | |
683 | while (isdigit(*(--p)) || *p == ',' || *p == '-'); | |
ff790e47 | 684 | (void)sscanf(CS p+1, "%d,%d", &len, &pno); |
059ec3d9 PH |
685 | *p = 0; |
686 | if (len > 0) | |
687 | { | |
688 | p -= len; | |
689 | errors_to = string_copy(p); | |
690 | } | |
691 | } | |
692 | ||
693 | *(--p) = 0; /* Terminate address */ | |
694 | } | |
695 | ||
696 | recipients_list[recipients_count].address = string_copy(big_buffer); | |
697 | recipients_list[recipients_count].pno = pno; | |
698 | recipients_list[recipients_count].errors_to = errors_to; | |
699 | } | |
700 | ||
701 | /* The remainder of the spool header file contains the headers for the message, | |
702 | separated off from the previous data by a blank line. Each header is preceded | |
703 | by a count of its length and either a certain letter (for various identified | |
704 | headers), space (for a miscellaneous live header) or an asterisk (for a header | |
705 | that has been rewritten). Count the Received: headers. We read the headers | |
706 | always, in order to check on the format of the file, but only create a header | |
707 | list if requested to do so. */ | |
708 | ||
709 | inheader = TRUE; | |
710 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
711 | if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR; | |
712 | ||
713 | while ((n = fgetc(f)) != EOF) | |
714 | { | |
715 | header_line *h; | |
716 | uschar flag[4]; | |
717 | int i; | |
718 | ||
719 | if (!isdigit(n)) goto SPOOL_FORMAT_ERROR; | |
ff790e47 PH |
720 | (void)ungetc(n, f); |
721 | (void)fscanf(f, "%d%c ", &n, flag); | |
059ec3d9 PH |
722 | if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */ |
723 | ||
724 | if (read_headers) | |
725 | { | |
726 | h = store_get(sizeof(header_line)); | |
727 | h->next = NULL; | |
728 | h->type = flag[0]; | |
729 | h->slen = n; | |
730 | h->text = store_get(n+1); | |
731 | ||
732 | if (h->type == htype_received) received_count++; | |
733 | ||
734 | if (header_list == NULL) header_list = h; | |
735 | else header_last->next = h; | |
736 | header_last = h; | |
737 | ||
738 | for (i = 0; i < n; i++) | |
739 | { | |
740 | int c = fgetc(f); | |
741 | if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR; | |
742 | if (c == '\n' && h->type != htype_old) message_linecount++; | |
743 | h->text[i] = c; | |
744 | } | |
745 | h->text[i] = 0; | |
746 | } | |
747 | ||
748 | /* Not requiring header data, just skip through the bytes */ | |
749 | ||
750 | else for (i = 0; i < n; i++) | |
751 | { | |
752 | int c = fgetc(f); | |
753 | if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR; | |
754 | } | |
755 | } | |
756 | ||
757 | /* We have successfully read the data in the header file. Update the message | |
758 | line count by adding the body linecount to the header linecount. Close the file | |
759 | and give a positive response. */ | |
760 | ||
761 | #ifndef COMPILE_UTILITY | |
762 | DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n", | |
763 | body_linecount, message_linecount); | |
764 | #endif /* COMPILE_UTILITY */ | |
765 | ||
766 | message_linecount += body_linecount; | |
767 | ||
768 | fclose(f); | |
769 | return spool_read_OK; | |
770 | ||
771 | ||
772 | /* There was an error reading the spool or there was missing data, | |
773 | or there was a format error. A "read error" with no errno means an | |
774 | unexpected EOF, which we treat as a format error. */ | |
775 | ||
776 | SPOOL_READ_ERROR: | |
777 | if (errno != 0) | |
778 | { | |
779 | n = errno; | |
780 | ||
781 | #ifndef COMPILE_UTILITY | |
782 | DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name); | |
783 | #endif /* COMPILE_UTILITY */ | |
784 | ||
785 | fclose(f); | |
786 | errno = n; | |
787 | return inheader? spool_read_hdrerror : spool_read_enverror; | |
788 | } | |
789 | ||
790 | SPOOL_FORMAT_ERROR: | |
791 | ||
792 | #ifndef COMPILE_UTILITY | |
793 | DEBUG(D_any) debug_printf("Format error in spool file %s\n", name); | |
794 | #endif /* COMPILE_UTILITY */ | |
795 | ||
796 | fclose(f); | |
797 | errno = ERRNO_SPOOLFORMAT; | |
798 | return inheader? spool_read_hdrerror : spool_read_enverror; | |
799 | } | |
800 | ||
801 | /* End of spool_in.c */ |