Commit | Line | Data |
---|---|---|
059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
9242a7e8 | 5 | /* Copyright (c) University of Cambridge 1995 - 2017 */ |
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 | ||
92b0827a JH |
28 | As called by deliver_message() (at least) we are operating as root. |
29 | ||
059ec3d9 | 30 | Argument: the id of the message |
789f8a4f | 31 | Returns: fd if file successfully opened and locked, else -1 |
059ec3d9 | 32 | |
789f8a4f | 33 | Side effect: message_subdir is set for the (possibly split) spool directory |
059ec3d9 PH |
34 | */ |
35 | ||
789f8a4f | 36 | int |
059ec3d9 PH |
37 | spool_open_datafile(uschar *id) |
38 | { | |
39 | int i; | |
40 | struct stat statbuf; | |
41 | flock_t lock_data; | |
789f8a4f | 42 | int fd; |
059ec3d9 PH |
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 | { | |
41313d92 | 53 | uschar * fname; |
059ec3d9 | 54 | int save_errno; |
9befa1ca | 55 | |
4dc2379a | 56 | message_subdir[0] = split_spool_directory == i ? '\0' : id[5]; |
41313d92 JH |
57 | fname = spool_fname(US"input", message_subdir, id, US"-D"); |
58 | DEBUG(D_deliver) debug_printf("Trying spool file %s\n", fname); | |
a2da3176 | 59 | |
92b0827a JH |
60 | if ((fd = Uopen(fname, |
61 | #ifdef O_CLOEXEC | |
62 | O_CLOEXEC | | |
63 | #endif | |
64 | O_RDWR | O_APPEND, 0)) >= 0) | |
789f8a4f | 65 | break; |
059ec3d9 PH |
66 | save_errno = errno; |
67 | if (errno == ENOENT) | |
68 | { | |
69 | if (i == 0) continue; | |
70 | if (!queue_running) | |
9befa1ca | 71 | log_write(0, LOG_MAIN, "Spool%s%s file %s-D not found", |
12cf7615 JH |
72 | *queue_name ? US" Q=" : US"", |
73 | *queue_name ? queue_name : US"", | |
9befa1ca | 74 | id); |
059ec3d9 | 75 | } |
9befa1ca JH |
76 | else |
77 | log_write(0, LOG_MAIN, "Spool error for %s: %s", fname, strerror(errno)); | |
059ec3d9 | 78 | errno = save_errno; |
789f8a4f | 79 | return -1; |
059ec3d9 PH |
80 | } |
81 | ||
82 | /* File is open and message_subdir is set. Set the close-on-exec flag, and lock | |
83 | the file. We lock only the first line of the file (containing the message ID) | |
84 | because this apparently is needed for running Exim under Cygwin. If the entire | |
85 | file is locked in one process, a sub-process cannot access it, even when passed | |
86 | an open file descriptor (at least, I think that's the Cygwin story). On real | |
87 | Unix systems it doesn't make any difference as long as Exim is consistent in | |
88 | what it locks. */ | |
89 | ||
92b0827a JH |
90 | #ifndef O_CLOEXEC |
91 | (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); | |
92 | #endif | |
059ec3d9 PH |
93 | |
94 | lock_data.l_type = F_WRLCK; | |
95 | lock_data.l_whence = SEEK_SET; | |
96 | lock_data.l_start = 0; | |
97 | lock_data.l_len = SPOOL_DATA_START_OFFSET; | |
98 | ||
789f8a4f | 99 | if (fcntl(fd, F_SETLK, &lock_data) < 0) |
059ec3d9 PH |
100 | { |
101 | log_write(L_skip_delivery, | |
102 | LOG_MAIN, | |
103 | "Spool file is locked (another process is handling this message)"); | |
789f8a4f | 104 | (void)close(fd); |
059ec3d9 | 105 | errno = 0; |
789f8a4f | 106 | return -1; |
059ec3d9 PH |
107 | } |
108 | ||
109 | /* Get the size of the data; don't include the leading filename line | |
110 | in the count, but add one for the newline before the data. */ | |
111 | ||
789f8a4f | 112 | if (fstat(fd, &statbuf) == 0) |
059ec3d9 PH |
113 | { |
114 | message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET; | |
115 | message_size = message_body_size + 1; | |
116 | } | |
117 | ||
789f8a4f | 118 | return fd; |
059ec3d9 PH |
119 | } |
120 | #endif /* COMPILE_UTILITY */ | |
121 | ||
122 | ||
123 | ||
124 | /************************************************* | |
125 | * Read non-recipients tree from spool file * | |
126 | *************************************************/ | |
127 | ||
128 | /* The tree of non-recipients is written to the spool file in a form that | |
129 | makes it easy to read back into a tree. The format is as follows: | |
130 | ||
131 | . Each node is preceded by two letter(Y/N) indicating whether it has left | |
132 | or right children. There's one space after the two flags, before the name. | |
133 | ||
134 | . The left subtree (if any) then follows, then the right subtree (if any). | |
135 | ||
136 | This function is entered with the next input line in the buffer. Note we must | |
137 | save the right flag before recursing with the same buffer. | |
138 | ||
139 | Once the tree is read, we re-construct the balance fields by scanning the tree. | |
140 | I forgot to write them out originally, and the compatible fix is to do it this | |
141 | way. This initial local recursing function does the necessary. | |
142 | ||
143 | Arguments: | |
144 | node tree node | |
145 | ||
146 | Returns: maximum depth below the node, including the node itself | |
147 | */ | |
148 | ||
149 | static int | |
150 | count_below(tree_node *node) | |
151 | { | |
152 | int nleft, nright; | |
153 | if (node == NULL) return 0; | |
154 | nleft = count_below(node->left); | |
155 | nright = count_below(node->right); | |
156 | node->balance = (nleft > nright)? 1 : ((nright > nleft)? 2 : 0); | |
157 | return 1 + ((nleft > nright)? nleft : nright); | |
158 | } | |
159 | ||
160 | /* This is the real function... | |
161 | ||
162 | Arguments: | |
163 | connect pointer to the root of the tree | |
164 | f FILE to read data from | |
165 | buffer contains next input line; further lines read into it | |
166 | buffer_size size of the buffer | |
167 | ||
168 | Returns: FALSE on format error | |
169 | */ | |
170 | ||
171 | static BOOL | |
172 | read_nonrecipients_tree(tree_node **connect, FILE *f, uschar *buffer, | |
173 | int buffer_size) | |
174 | { | |
175 | tree_node *node; | |
176 | int n = Ustrlen(buffer); | |
177 | BOOL right = buffer[1] == 'Y'; | |
178 | ||
179 | if (n < 5) return FALSE; /* malformed line */ | |
180 | buffer[n-1] = 0; /* Remove \n */ | |
181 | node = store_get(sizeof(tree_node) + n - 3); | |
182 | *connect = node; | |
183 | Ustrcpy(node->name, buffer + 3); | |
184 | node->data.ptr = NULL; | |
185 | ||
186 | if (buffer[0] == 'Y') | |
187 | { | |
188 | if (Ufgets(buffer, buffer_size, f) == NULL || | |
189 | !read_nonrecipients_tree(&node->left, f, buffer, buffer_size)) | |
190 | return FALSE; | |
191 | } | |
192 | else node->left = NULL; | |
193 | ||
194 | if (right) | |
195 | { | |
196 | if (Ufgets(buffer, buffer_size, f) == NULL || | |
197 | !read_nonrecipients_tree(&node->right, f, buffer, buffer_size)) | |
198 | return FALSE; | |
199 | } | |
200 | else node->right = NULL; | |
201 | ||
202 | (void) count_below(*connect); | |
203 | return TRUE; | |
204 | } | |
205 | ||
206 | ||
207 | ||
208 | ||
209 | /************************************************* | |
210 | * Read spool header file * | |
211 | *************************************************/ | |
212 | ||
213 | /* This function reads a spool header file and places the data into the | |
214 | appropriate global variables. The header portion is always read, but header | |
215 | structures are built only if read_headers is set true. It isn't, for example, | |
216 | while generating -bp output. | |
217 | ||
218 | It may be possible for blocks of nulls (binary zeroes) to get written on the | |
219 | end of a file if there is a system crash during writing. It was observed on an | |
220 | earlier version of Exim that omitted to fsync() the files - this is thought to | |
221 | have been the cause of that incident, but in any case, this code must be robust | |
222 | against such an event, and if such a file is encountered, it must be treated as | |
223 | malformed. | |
224 | ||
92b0827a JH |
225 | As called from deliver_message() (at least) we are running as root. |
226 | ||
059ec3d9 PH |
227 | Arguments: |
228 | name name of the header file, including the -H | |
229 | read_headers TRUE if in-store header structures are to be built | |
230 | subdir_set TRUE is message_subdir is already set | |
231 | ||
232 | Returns: spool_read_OK success | |
233 | spool_read_notopen open failed | |
234 | spool_read_enverror error in the envelope portion | |
4c04137d | 235 | spool_read_hdrerror error in the header portion |
059ec3d9 PH |
236 | */ |
237 | ||
238 | int | |
239 | spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set) | |
240 | { | |
241 | FILE *f = NULL; | |
242 | int n; | |
243 | int rcount = 0; | |
244 | long int uid, gid; | |
245 | BOOL inheader = FALSE; | |
1e70f85b | 246 | uschar *p; |
059ec3d9 PH |
247 | |
248 | /* Reset all the global variables to their default values. However, there is | |
249 | one exception. DO NOT change the default value of dont_deliver, because it may | |
250 | be forced by an external setting. */ | |
251 | ||
38a0a95f | 252 | acl_var_c = acl_var_m = NULL; |
059ec3d9 PH |
253 | authenticated_id = NULL; |
254 | authenticated_sender = NULL; | |
255 | allow_unqualified_recipient = FALSE; | |
256 | allow_unqualified_sender = FALSE; | |
257 | body_linecount = 0; | |
258 | body_zerocount = 0; | |
259 | deliver_firsttime = FALSE; | |
260 | deliver_freeze = FALSE; | |
261 | deliver_frozen_at = 0; | |
262 | deliver_manual_thaw = FALSE; | |
263 | /* dont_deliver must NOT be reset */ | |
264 | header_list = header_last = NULL; | |
b08b24c8 | 265 | host_lookup_deferred = FALSE; |
059ec3d9 PH |
266 | host_lookup_failed = FALSE; |
267 | interface_address = NULL; | |
268 | interface_port = 0; | |
269 | local_error_message = FALSE; | |
270 | local_scan_data = NULL; | |
d677b2f2 | 271 | max_received_linelength = 0; |
059ec3d9 PH |
272 | message_linecount = 0; |
273 | received_protocol = NULL; | |
274 | received_count = 0; | |
275 | recipients_list = NULL; | |
276 | sender_address = NULL; | |
277 | sender_fullhost = NULL; | |
278 | sender_helo_name = NULL; | |
279 | sender_host_address = NULL; | |
280 | sender_host_name = NULL; | |
281 | sender_host_port = 0; | |
282 | sender_host_authenticated = NULL; | |
283 | sender_ident = NULL; | |
284 | sender_local = FALSE; | |
285 | sender_set_untrusted = FALSE; | |
1f5b4c3d | 286 | smtp_active_hostname = primary_hostname; |
328c5688 JH |
287 | #ifndef COMPILE_UTILITY |
288 | spool_file_wireformat = FALSE; | |
289 | #endif | |
059ec3d9 PH |
290 | tree_nonrecipients = NULL; |
291 | ||
8523533c TK |
292 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
293 | bmi_run = 0; | |
294 | bmi_verdicts = NULL; | |
295 | #endif | |
296 | ||
80a47a2c | 297 | #ifndef DISABLE_DKIM |
9e5d6b55 | 298 | dkim_signers = NULL; |
80a47a2c TK |
299 | dkim_disable_verify = FALSE; |
300 | dkim_collect_input = FALSE; | |
f7572e5a TK |
301 | #endif |
302 | ||
059ec3d9 | 303 | #ifdef SUPPORT_TLS |
817d9f57 | 304 | tls_in.certificate_verified = FALSE; |
53a7196b JH |
305 | # ifdef EXPERIMENTAL_DANE |
306 | tls_in.dane_verified = FALSE; | |
307 | # endif | |
817d9f57 | 308 | tls_in.cipher = NULL; |
790fbb71 JH |
309 | # ifndef COMPILE_UTILITY /* tls support fns not built in */ |
310 | tls_free_cert(&tls_in.ourcert); | |
311 | tls_free_cert(&tls_in.peercert); | |
312 | # endif | |
817d9f57 JH |
313 | tls_in.peerdn = NULL; |
314 | tls_in.sni = NULL; | |
44662487 | 315 | tls_in.ocsp = OCSP_NOT_REQ; |
7be682ca | 316 | #endif |
059ec3d9 | 317 | |
8523533c | 318 | #ifdef WITH_CONTENT_SCAN |
3481c572 JH |
319 | spam_bar = NULL; |
320 | spam_score = NULL; | |
8523533c TK |
321 | spam_score_int = NULL; |
322 | #endif | |
323 | ||
8c5d388a | 324 | #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY) |
7ade712c | 325 | message_smtputf8 = FALSE; |
3c8b3577 | 326 | message_utf8_downconvert = 0; |
7ade712c JH |
327 | #endif |
328 | ||
6c1c3d1d WB |
329 | dsn_ret = 0; |
330 | dsn_envid = NULL; | |
6c1c3d1d | 331 | |
059ec3d9 PH |
332 | /* Generate the full name and open the file. If message_subdir is already |
333 | set, just look in the given directory. Otherwise, look in both the split | |
334 | and unsplit directories, as for the data file above. */ | |
335 | ||
336 | for (n = 0; n < 2; n++) | |
337 | { | |
338 | if (!subdir_set) | |
a2da3176 | 339 | message_subdir[0] = split_spool_directory == (n == 0) ? name[5] : 0; |
41313d92 JH |
340 | |
341 | if ((f = Ufopen(spool_fname(US"input", message_subdir, name, US""), "rb"))) | |
342 | break; | |
343 | if (n != 0 || subdir_set || errno != ENOENT) | |
344 | return spool_read_notopen; | |
059ec3d9 PH |
345 | } |
346 | ||
347 | errno = 0; | |
348 | ||
349 | #ifndef COMPILE_UTILITY | |
350 | DEBUG(D_deliver) debug_printf("reading spool file %s\n", name); | |
351 | #endif /* COMPILE_UTILITY */ | |
352 | ||
353 | /* The first line of a spool file contains the message id followed by -H (i.e. | |
354 | the file name), in order to make the file self-identifying. */ | |
355 | ||
356 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
357 | if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 || | |
358 | Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0) | |
359 | goto SPOOL_FORMAT_ERROR; | |
360 | ||
361 | /* The next three lines in the header file are in a fixed format. The first | |
362 | contains the login, uid, and gid of the user who caused the file to be written. | |
ebb6e6d5 PH |
363 | There are known cases where a negative gid is used, so we allow for both |
364 | negative uids and gids. The second contains the mail address of the message's | |
365 | sender, enclosed in <>. The third contains the time the message was received, | |
366 | and the number of warning messages for delivery delays that have been sent. */ | |
059ec3d9 PH |
367 | |
368 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
369 | ||
1e70f85b PH |
370 | p = big_buffer + Ustrlen(big_buffer); |
371 | while (p > big_buffer && isspace(p[-1])) p--; | |
372 | *p = 0; | |
373 | if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; | |
ebb6e6d5 | 374 | while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; |
1e70f85b PH |
375 | gid = Uatoi(p); |
376 | if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; | |
377 | *p = 0; | |
378 | if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; | |
ebb6e6d5 | 379 | while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; |
1e70f85b PH |
380 | uid = Uatoi(p); |
381 | if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; | |
382 | *p = 0; | |
8e669ac1 | 383 | |
1e70f85b | 384 | originator_login = string_copy(big_buffer); |
059ec3d9 PH |
385 | originator_uid = (uid_t)uid; |
386 | originator_gid = (gid_t)gid; | |
387 | ||
e91ad4a7 | 388 | /* envelope from */ |
059ec3d9 PH |
389 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; |
390 | n = Ustrlen(big_buffer); | |
391 | if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>') | |
392 | goto SPOOL_FORMAT_ERROR; | |
393 | ||
394 | sender_address = store_get(n-2); | |
395 | Ustrncpy(sender_address, big_buffer+1, n-3); | |
396 | sender_address[n-3] = 0; | |
397 | ||
e91ad4a7 | 398 | /* time */ |
059ec3d9 | 399 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; |
32dfdf8b | 400 | if (sscanf(CS big_buffer, TIME_T_FMT " %d", &received_time.tv_sec, &warning_count) != 2) |
059ec3d9 | 401 | goto SPOOL_FORMAT_ERROR; |
32dfdf8b | 402 | received_time.tv_usec = 0; |
059ec3d9 | 403 | |
32dfdf8b | 404 | message_age = time(NULL) - received_time.tv_sec; |
059ec3d9 PH |
405 | |
406 | #ifndef COMPILE_UTILITY | |
407 | DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n", | |
408 | originator_login, (long int)originator_uid, (long int)originator_gid, | |
409 | sender_address); | |
410 | #endif /* COMPILE_UTILITY */ | |
411 | ||
08955dd3 PH |
412 | /* Now there may be a number of optional lines, each starting with "-". If you |
413 | add a new setting here, make sure you set the default above. | |
059ec3d9 | 414 | |
08955dd3 PH |
415 | Because there are now quite a number of different possibilities, we use a |
416 | switch on the first character to avoid too many failing tests. Thanks to Nico | |
417 | Erfurth for the patch that implemented this. I have made it even more efficient | |
418 | by not re-scanning the first two characters. | |
419 | ||
420 | To allow new versions of Exim that add additional flags to interwork with older | |
421 | versions that do not understand them, just ignore any lines starting with "-" | |
422 | that we don't recognize. Otherwise it wouldn't be possible to back off a new | |
423 | version that left new-style flags written on the spool. */ | |
424 | ||
425 | p = big_buffer + 2; | |
059ec3d9 PH |
426 | for (;;) |
427 | { | |
e91ad4a7 | 428 | int len; |
059ec3d9 PH |
429 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; |
430 | if (big_buffer[0] != '-') break; | |
e91ad4a7 JH |
431 | while ( (len = Ustrlen(big_buffer)) == big_buffer_size-1 |
432 | && big_buffer[len-1] != '\n' | |
433 | ) | |
434 | { /* buffer not big enough for line; certs make this possible */ | |
435 | uschar * buf; | |
436 | if (big_buffer_size >= BIG_BUFFER_SIZE*4) goto SPOOL_READ_ERROR; | |
437 | buf = store_get_perm(big_buffer_size *= 2); | |
438 | memcpy(buf, big_buffer, --len); | |
439 | big_buffer = buf; | |
440 | if (Ufgets(big_buffer+len, big_buffer_size-len, f) == NULL) | |
441 | goto SPOOL_READ_ERROR; | |
442 | } | |
443 | big_buffer[len-1] = 0; | |
47ca6d6c | 444 | |
08955dd3 | 445 | switch(big_buffer[1]) |
059ec3d9 | 446 | { |
08955dd3 PH |
447 | case 'a': |
448 | ||
449 | /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL | |
450 | variable, because Exim allows any number of them, with arbitrary names. | |
451 | The line in the spool file is "-acl[cm] <name> <length>". The name excludes | |
452 | the c or m. */ | |
453 | ||
454 | if (Ustrncmp(p, "clc ", 4) == 0 || | |
455 | Ustrncmp(p, "clm ", 4) == 0) | |
456 | { | |
457 | uschar *name, *endptr; | |
458 | int count; | |
459 | tree_node *node; | |
460 | endptr = Ustrchr(big_buffer + 6, ' '); | |
461 | if (endptr == NULL) goto SPOOL_FORMAT_ERROR; | |
bb07bcd3 JH |
462 | name = string_sprintf("%c%.*s", big_buffer[4], |
463 | (int)(endptr - big_buffer - 6), big_buffer + 6); | |
08955dd3 PH |
464 | if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR; |
465 | node = acl_var_create(name); | |
466 | node->data.ptr = store_get(count + 1); | |
467 | if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; | |
468 | ((uschar*)node->data.ptr)[count] = 0; | |
469 | } | |
470 | ||
471 | else if (Ustrcmp(p, "llow_unqualified_recipient") == 0) | |
472 | allow_unqualified_recipient = TRUE; | |
473 | else if (Ustrcmp(p, "llow_unqualified_sender") == 0) | |
474 | allow_unqualified_sender = TRUE; | |
475 | ||
476 | else if (Ustrncmp(p, "uth_id", 6) == 0) | |
477 | authenticated_id = string_copy(big_buffer + 9); | |
478 | else if (Ustrncmp(p, "uth_sender", 10) == 0) | |
479 | authenticated_sender = string_copy(big_buffer + 13); | |
480 | else if (Ustrncmp(p, "ctive_hostname", 14) == 0) | |
481 | smtp_active_hostname = string_copy(big_buffer + 17); | |
482 | ||
483 | /* For long-term backward compatibility, we recognize "-acl", which was | |
484 | used before the number of ACL variables changed from 10 to 20. This was | |
485 | before the subsequent change to an arbitrary number of named variables. | |
486 | This code is retained so that upgrades from very old versions can still | |
487 | handle old-format spool files. The value given after "-acl" is a number | |
488 | that is 0-9 for connection variables, and 10-19 for message variables. */ | |
489 | ||
490 | else if (Ustrncmp(p, "cl ", 3) == 0) | |
491 | { | |
4dc2379a JH |
492 | unsigned index, count; |
493 | uschar name[20]; /* Need plenty of space for %u format */ | |
494 | tree_node * node; | |
495 | if ( sscanf(CS big_buffer + 5, "%u %u", &index, &count) != 2 | |
806c3df9 | 496 | || index >= 20 |
f267271d | 497 | || count > 16384 /* arbitrary limit on variable size */ |
806c3df9 | 498 | ) |
08955dd3 | 499 | goto SPOOL_FORMAT_ERROR; |
8dce1a6f | 500 | if (index < 10) |
4dc2379a | 501 | (void) string_format(name, sizeof(name), "%c%u", 'c', index); |
806c3df9 | 502 | else |
4dc2379a | 503 | (void) string_format(name, sizeof(name), "%c%u", 'm', index - 10); |
08955dd3 PH |
504 | node = acl_var_create(name); |
505 | node->data.ptr = store_get(count + 1); | |
f267271d JH |
506 | /* We sanity-checked the count, so disable the Coverity error */ |
507 | /* coverity[tainted_data] */ | |
08955dd3 | 508 | if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; |
4dc2379a | 509 | (US node->data.ptr)[count] = '\0'; |
08955dd3 PH |
510 | } |
511 | break; | |
512 | ||
513 | case 'b': | |
514 | if (Ustrncmp(p, "ody_linecount", 13) == 0) | |
515 | body_linecount = Uatoi(big_buffer + 15); | |
516 | else if (Ustrncmp(p, "ody_zerocount", 13) == 0) | |
517 | body_zerocount = Uatoi(big_buffer + 15); | |
e91ad4a7 | 518 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
08955dd3 PH |
519 | else if (Ustrncmp(p, "mi_verdicts ", 12) == 0) |
520 | bmi_verdicts = string_copy(big_buffer + 14); | |
e91ad4a7 | 521 | #endif |
08955dd3 PH |
522 | break; |
523 | ||
524 | case 'd': | |
525 | if (Ustrcmp(p, "eliver_firsttime") == 0) | |
526 | deliver_firsttime = TRUE; | |
6c1c3d1d WB |
527 | /* Check if the dsn flags have been set in the header file */ |
528 | else if (Ustrncmp(p, "sn_ret", 6) == 0) | |
45500060 | 529 | dsn_ret= atoi(CS big_buffer + 8); |
6c1c3d1d | 530 | else if (Ustrncmp(p, "sn_envid", 8) == 0) |
6c1c3d1d | 531 | dsn_envid = string_copy(big_buffer + 11); |
08955dd3 PH |
532 | break; |
533 | ||
534 | case 'f': | |
535 | if (Ustrncmp(p, "rozen", 5) == 0) | |
536 | { | |
537 | deliver_freeze = TRUE; | |
dc8091e7 JH |
538 | if (sscanf(CS big_buffer+7, TIME_T_FMT, &deliver_frozen_at) != 1) |
539 | goto SPOOL_READ_ERROR; | |
08955dd3 PH |
540 | } |
541 | break; | |
542 | ||
543 | case 'h': | |
544 | if (Ustrcmp(p, "ost_lookup_deferred") == 0) | |
545 | host_lookup_deferred = TRUE; | |
546 | else if (Ustrcmp(p, "ost_lookup_failed") == 0) | |
547 | host_lookup_failed = TRUE; | |
548 | else if (Ustrncmp(p, "ost_auth", 8) == 0) | |
549 | sender_host_authenticated = string_copy(big_buffer + 11); | |
550 | else if (Ustrncmp(p, "ost_name", 8) == 0) | |
551 | sender_host_name = string_copy(big_buffer + 11); | |
552 | else if (Ustrncmp(p, "elo_name", 8) == 0) | |
553 | sender_helo_name = string_copy(big_buffer + 11); | |
554 | ||
555 | /* We now record the port number after the address, separated by a | |
556 | dot. For compatibility during upgrading, do nothing if there | |
557 | isn't a value (it gets left at zero). */ | |
558 | ||
559 | else if (Ustrncmp(p, "ost_address", 11) == 0) | |
560 | { | |
561 | sender_host_port = host_address_extract_port(big_buffer + 14); | |
562 | sender_host_address = string_copy(big_buffer + 14); | |
563 | } | |
564 | break; | |
565 | ||
566 | case 'i': | |
567 | if (Ustrncmp(p, "nterface_address", 16) == 0) | |
568 | { | |
569 | interface_port = host_address_extract_port(big_buffer + 19); | |
570 | interface_address = string_copy(big_buffer + 19); | |
571 | } | |
572 | else if (Ustrncmp(p, "dent", 4) == 0) | |
573 | sender_ident = string_copy(big_buffer + 7); | |
574 | break; | |
575 | ||
576 | case 'l': | |
32dfdf8b JH |
577 | if (Ustrcmp(p, "ocal") == 0) |
578 | sender_local = TRUE; | |
08955dd3 PH |
579 | else if (Ustrcmp(big_buffer, "-localerror") == 0) |
580 | local_error_message = TRUE; | |
581 | else if (Ustrncmp(p, "ocal_scan ", 10) == 0) | |
582 | local_scan_data = string_copy(big_buffer + 12); | |
583 | break; | |
584 | ||
585 | case 'm': | |
586 | if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE; | |
d677b2f2 PH |
587 | else if (Ustrncmp(p, "ax_received_linelength", 22) == 0) |
588 | max_received_linelength = Uatoi(big_buffer + 24); | |
08955dd3 PH |
589 | break; |
590 | ||
591 | case 'N': | |
592 | if (*p == 0) dont_deliver = TRUE; /* -N */ | |
593 | break; | |
594 | ||
595 | case 'r': | |
596 | if (Ustrncmp(p, "eceived_protocol", 16) == 0) | |
597 | received_protocol = string_copy(big_buffer + 19); | |
32dfdf8b JH |
598 | else if (Ustrncmp(p, "eceived_time_usec", 17) == 0) |
599 | { | |
600 | unsigned usec; | |
601 | if (sscanf(CS big_buffer + 21, "%u", &usec) == 1) | |
602 | received_time.tv_usec = usec; | |
603 | } | |
08955dd3 PH |
604 | break; |
605 | ||
606 | case 's': | |
607 | if (Ustrncmp(p, "ender_set_untrusted", 19) == 0) | |
608 | sender_set_untrusted = TRUE; | |
e91ad4a7 | 609 | #ifdef WITH_CONTENT_SCAN |
3481c572 JH |
610 | else if (Ustrncmp(p, "pam_bar ", 8) == 0) |
611 | spam_bar = string_copy(big_buffer + 10); | |
612 | else if (Ustrncmp(p, "pam_score ", 10) == 0) | |
613 | spam_score = string_copy(big_buffer + 12); | |
08955dd3 PH |
614 | else if (Ustrncmp(p, "pam_score_int ", 14) == 0) |
615 | spam_score_int = string_copy(big_buffer + 16); | |
e91ad4a7 | 616 | #endif |
328c5688 JH |
617 | #ifndef COMPILE_UTILITY |
618 | else if (Ustrncmp(p, "pool_file_wireformat", 20) == 0) | |
619 | spool_file_wireformat = TRUE; | |
620 | #endif | |
8c5d388a | 621 | #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY) |
7ade712c JH |
622 | else if (Ustrncmp(p, "mtputf8", 7) == 0) |
623 | message_smtputf8 = TRUE; | |
624 | #endif | |
08955dd3 PH |
625 | break; |
626 | ||
e91ad4a7 | 627 | #ifdef SUPPORT_TLS |
08955dd3 PH |
628 | case 't': |
629 | if (Ustrncmp(p, "ls_certificate_verified", 23) == 0) | |
817d9f57 | 630 | tls_in.certificate_verified = TRUE; |
08955dd3 | 631 | else if (Ustrncmp(p, "ls_cipher", 9) == 0) |
817d9f57 | 632 | tls_in.cipher = string_copy(big_buffer + 12); |
e91ad4a7 | 633 | # ifndef COMPILE_UTILITY /* tls support fns not built in */ |
9d1c15ef JH |
634 | else if (Ustrncmp(p, "ls_ourcert", 10) == 0) |
635 | (void) tls_import_cert(big_buffer + 13, &tls_in.ourcert); | |
636 | else if (Ustrncmp(p, "ls_peercert", 11) == 0) | |
637 | (void) tls_import_cert(big_buffer + 14, &tls_in.peercert); | |
e91ad4a7 | 638 | # endif |
08955dd3 | 639 | else if (Ustrncmp(p, "ls_peerdn", 9) == 0) |
817d9f57 | 640 | tls_in.peerdn = string_unprinting(string_copy(big_buffer + 12)); |
7be682ca | 641 | else if (Ustrncmp(p, "ls_sni", 6) == 0) |
817d9f57 | 642 | tls_in.sni = string_unprinting(string_copy(big_buffer + 9)); |
44662487 JH |
643 | else if (Ustrncmp(p, "ls_ocsp", 7) == 0) |
644 | tls_in.ocsp = big_buffer[10] - '0'; | |
08955dd3 | 645 | break; |
e91ad4a7 | 646 | #endif |
08955dd3 | 647 | |
8c5d388a | 648 | #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY) |
3c8b3577 JH |
649 | case 'u': |
650 | if (Ustrncmp(p, "tf8_downcvt", 11) == 0) | |
651 | message_utf8_downconvert = 1; | |
0ec7e948 | 652 | else if (Ustrncmp(p, "tf8_optdowncvt", 15) == 0) |
3c8b3577 JH |
653 | message_utf8_downconvert = -1; |
654 | break; | |
655 | #endif | |
656 | ||
08955dd3 PH |
657 | default: /* Present because some compilers complain if all */ |
658 | break; /* possibilities are not covered. */ | |
059ec3d9 | 659 | } |
059ec3d9 PH |
660 | } |
661 | ||
662 | /* Build sender_fullhost if required */ | |
663 | ||
664 | #ifndef COMPILE_UTILITY | |
665 | host_build_sender_fullhost(); | |
666 | #endif /* COMPILE_UTILITY */ | |
667 | ||
668 | #ifndef COMPILE_UTILITY | |
669 | DEBUG(D_deliver) | |
670 | debug_printf("sender_local=%d ident=%s\n", sender_local, | |
671 | (sender_ident == NULL)? US"unset" : sender_ident); | |
672 | #endif /* COMPILE_UTILITY */ | |
673 | ||
674 | /* We now have the tree of addresses NOT to deliver to, or a line | |
675 | containing "XX", indicating no tree. */ | |
676 | ||
677 | if (Ustrncmp(big_buffer, "XX\n", 3) != 0 && | |
678 | !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size)) | |
679 | goto SPOOL_FORMAT_ERROR; | |
680 | ||
681 | #ifndef COMPILE_UTILITY | |
682 | DEBUG(D_deliver) | |
683 | { | |
684 | debug_printf("Non-recipients:\n"); | |
685 | debug_print_tree(tree_nonrecipients); | |
686 | } | |
687 | #endif /* COMPILE_UTILITY */ | |
688 | ||
689 | /* After reading the tree, the next line has not yet been read into the | |
d88f0784 JH |
690 | buffer. It contains the count of recipients which follow on separate lines. |
691 | Apply an arbitrary sanity check.*/ | |
059ec3d9 PH |
692 | |
693 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
d88f0784 JH |
694 | if (sscanf(CS big_buffer, "%d", &rcount) != 1 || rcount > 16384) |
695 | goto SPOOL_FORMAT_ERROR; | |
059ec3d9 PH |
696 | |
697 | #ifndef COMPILE_UTILITY | |
698 | DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount); | |
699 | #endif /* COMPILE_UTILITY */ | |
700 | ||
701 | recipients_list_max = rcount; | |
702 | recipients_list = store_get(rcount * sizeof(recipient_item)); | |
703 | ||
d88f0784 JH |
704 | /* We sanitised the count and know we have enough memory, so disable |
705 | the Coverity error on recipients_count */ | |
706 | /* coverity[tainted_data] */ | |
707 | ||
059ec3d9 PH |
708 | for (recipients_count = 0; recipients_count < rcount; recipients_count++) |
709 | { | |
710 | int nn; | |
711 | int pno = -1; | |
6c1c3d1d WB |
712 | int dsn_flags = 0; |
713 | uschar *orcpt = NULL; | |
059ec3d9 PH |
714 | uschar *errors_to = NULL; |
715 | uschar *p; | |
716 | ||
717 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
718 | nn = Ustrlen(big_buffer); | |
719 | if (nn < 2) goto SPOOL_FORMAT_ERROR; | |
720 | ||
721 | /* Remove the newline; this terminates the address if there is no additional | |
722 | data on the line. */ | |
723 | ||
724 | p = big_buffer + nn - 1; | |
725 | *p-- = 0; | |
726 | ||
727 | /* Look back from the end of the line for digits and special terminators. | |
728 | Since an address must end with a domain, we can tell that extra data is | |
729 | present by the presence of the terminator, which is always some character | |
730 | that cannot exist in a domain. (If I'd thought of the need for additional | |
731 | data early on, I'd have put it at the start, with the address at the end. As | |
732 | it is, we have to operate backwards. Addresses are permitted to contain | |
733 | spaces, you see.) | |
734 | ||
735 | This code has to cope with various versions of this data that have evolved | |
736 | over time. In all cases, the line might just contain an address, with no | |
737 | additional data. Otherwise, the possibilities are as follows: | |
738 | ||
739 | Exim 3 type: <address><space><digits>,<digits>,<digits> | |
740 | ||
741 | The second set of digits is the parent number for one_time addresses. The | |
742 | other values were remnants of earlier experiments that were abandoned. | |
743 | ||
744 | Exim 4 first type: <address><space><digits> | |
745 | ||
746 | The digits are the parent number for one_time addresses. | |
747 | ||
748 | Exim 4 new type: <address><space><data>#<type bits> | |
749 | ||
750 | The type bits indicate what the contents of the data are. | |
751 | ||
752 | Bit 01 indicates that, reading from right to left, the data | |
753 | ends with <errors_to address><space><len>,<pno> where pno is | |
754 | the parent number for one_time addresses, and len is the length | |
755 | of the errors_to address (zero meaning none). | |
6c1c3d1d WB |
756 | |
757 | Bit 02 indicates that, again reading from right to left, the data continues | |
758 | with orcpt len(orcpt),dsn_flags | |
059ec3d9 PH |
759 | */ |
760 | ||
761 | while (isdigit(*p)) p--; | |
762 | ||
763 | /* Handle Exim 3 spool files */ | |
764 | ||
765 | if (*p == ',') | |
766 | { | |
767 | int dummy; | |
768 | while (isdigit(*(--p)) || *p == ','); | |
769 | if (*p == ' ') | |
770 | { | |
771 | *p++ = 0; | |
ff790e47 | 772 | (void)sscanf(CS p, "%d,%d", &dummy, &pno); |
059ec3d9 PH |
773 | } |
774 | } | |
775 | ||
776 | /* Handle early Exim 4 spool files */ | |
777 | ||
778 | else if (*p == ' ') | |
779 | { | |
780 | *p++ = 0; | |
ff790e47 | 781 | (void)sscanf(CS p, "%d", &pno); |
059ec3d9 PH |
782 | } |
783 | ||
784 | /* Handle current format Exim 4 spool files */ | |
785 | ||
786 | else if (*p == '#') | |
787 | { | |
788 | int flags; | |
6c1c3d1d | 789 | |
50dc7409 | 790 | #if !defined (COMPILE_UTILITY) |
e91ad4a7 JH |
791 | DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim 4 standard format spoolfile\n"); |
792 | #endif | |
6c1c3d1d | 793 | |
ff790e47 | 794 | (void)sscanf(CS p+1, "%d", &flags); |
059ec3d9 PH |
795 | |
796 | if ((flags & 0x01) != 0) /* one_time data exists */ | |
797 | { | |
798 | int len; | |
799 | while (isdigit(*(--p)) || *p == ',' || *p == '-'); | |
ff790e47 | 800 | (void)sscanf(CS p+1, "%d,%d", &len, &pno); |
059ec3d9 PH |
801 | *p = 0; |
802 | if (len > 0) | |
803 | { | |
804 | p -= len; | |
805 | errors_to = string_copy(p); | |
94431adb | 806 | } |
6c1c3d1d WB |
807 | } |
808 | ||
809 | *(--p) = 0; /* Terminate address */ | |
6c1c3d1d WB |
810 | if ((flags & 0x02) != 0) /* one_time data exists */ |
811 | { | |
812 | int len; | |
813 | while (isdigit(*(--p)) || *p == ',' || *p == '-'); | |
814 | (void)sscanf(CS p+1, "%d,%d", &len, &dsn_flags); | |
815 | *p = 0; | |
816 | if (len > 0) | |
817 | { | |
818 | p -= len; | |
819 | orcpt = string_copy(p); | |
94431adb | 820 | } |
059ec3d9 PH |
821 | } |
822 | ||
823 | *(--p) = 0; /* Terminate address */ | |
6c1c3d1d | 824 | } |
50dc7409 | 825 | #if !defined(COMPILE_UTILITY) |
6c1c3d1d | 826 | else |
e91ad4a7 | 827 | { DEBUG(D_deliver) debug_printf("**** SPOOL_IN - No additional fields\n"); } |
6c1c3d1d WB |
828 | |
829 | if ((orcpt != NULL) || (dsn_flags != 0)) | |
830 | { | |
831 | DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| orcpt: |%s| dsn_flags: %d\n", | |
832 | big_buffer, orcpt, dsn_flags); | |
833 | } | |
834 | if (errors_to != NULL) | |
835 | { | |
836 | DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| errorsto: |%s|\n", | |
837 | big_buffer, errors_to); | |
059ec3d9 | 838 | } |
50dc7409 | 839 | #endif |
059ec3d9 PH |
840 | |
841 | recipients_list[recipients_count].address = string_copy(big_buffer); | |
842 | recipients_list[recipients_count].pno = pno; | |
843 | recipients_list[recipients_count].errors_to = errors_to; | |
6c1c3d1d WB |
844 | recipients_list[recipients_count].orcpt = orcpt; |
845 | recipients_list[recipients_count].dsn_flags = dsn_flags; | |
059ec3d9 PH |
846 | } |
847 | ||
848 | /* The remainder of the spool header file contains the headers for the message, | |
849 | separated off from the previous data by a blank line. Each header is preceded | |
850 | by a count of its length and either a certain letter (for various identified | |
851 | headers), space (for a miscellaneous live header) or an asterisk (for a header | |
852 | that has been rewritten). Count the Received: headers. We read the headers | |
853 | always, in order to check on the format of the file, but only create a header | |
854 | list if requested to do so. */ | |
855 | ||
856 | inheader = TRUE; | |
857 | if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; | |
858 | if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR; | |
859 | ||
860 | while ((n = fgetc(f)) != EOF) | |
861 | { | |
862 | header_line *h; | |
863 | uschar flag[4]; | |
864 | int i; | |
865 | ||
866 | if (!isdigit(n)) goto SPOOL_FORMAT_ERROR; | |
1ac6b2e7 JH |
867 | if(ungetc(n, f) == EOF || fscanf(f, "%d%c ", &n, flag) == EOF) |
868 | goto SPOOL_READ_ERROR; | |
059ec3d9 PH |
869 | if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */ |
870 | ||
871 | if (read_headers) | |
872 | { | |
873 | h = store_get(sizeof(header_line)); | |
874 | h->next = NULL; | |
875 | h->type = flag[0]; | |
876 | h->slen = n; | |
877 | h->text = store_get(n+1); | |
878 | ||
879 | if (h->type == htype_received) received_count++; | |
880 | ||
881 | if (header_list == NULL) header_list = h; | |
882 | else header_last->next = h; | |
883 | header_last = h; | |
884 | ||
885 | for (i = 0; i < n; i++) | |
886 | { | |
887 | int c = fgetc(f); | |
888 | if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR; | |
889 | if (c == '\n' && h->type != htype_old) message_linecount++; | |
890 | h->text[i] = c; | |
891 | } | |
892 | h->text[i] = 0; | |
893 | } | |
894 | ||
895 | /* Not requiring header data, just skip through the bytes */ | |
896 | ||
897 | else for (i = 0; i < n; i++) | |
898 | { | |
899 | int c = fgetc(f); | |
900 | if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR; | |
901 | } | |
902 | } | |
903 | ||
904 | /* We have successfully read the data in the header file. Update the message | |
905 | line count by adding the body linecount to the header linecount. Close the file | |
906 | and give a positive response. */ | |
907 | ||
908 | #ifndef COMPILE_UTILITY | |
909 | DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n", | |
910 | body_linecount, message_linecount); | |
911 | #endif /* COMPILE_UTILITY */ | |
912 | ||
913 | message_linecount += body_linecount; | |
914 | ||
915 | fclose(f); | |
916 | return spool_read_OK; | |
917 | ||
918 | ||
919 | /* There was an error reading the spool or there was missing data, | |
920 | or there was a format error. A "read error" with no errno means an | |
921 | unexpected EOF, which we treat as a format error. */ | |
922 | ||
923 | SPOOL_READ_ERROR: | |
924 | if (errno != 0) | |
925 | { | |
926 | n = errno; | |
927 | ||
e91ad4a7 | 928 | #ifndef COMPILE_UTILITY |
059ec3d9 | 929 | DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name); |
e91ad4a7 | 930 | #endif /* COMPILE_UTILITY */ |
059ec3d9 PH |
931 | |
932 | fclose(f); | |
933 | errno = n; | |
934 | return inheader? spool_read_hdrerror : spool_read_enverror; | |
935 | } | |
936 | ||
937 | SPOOL_FORMAT_ERROR: | |
938 | ||
939 | #ifndef COMPILE_UTILITY | |
940 | DEBUG(D_any) debug_printf("Format error in spool file %s\n", name); | |
941 | #endif /* COMPILE_UTILITY */ | |
942 | ||
943 | fclose(f); | |
944 | errno = ERRNO_SPOOLFORMAT; | |
945 | return inheader? spool_read_hdrerror : spool_read_enverror; | |
946 | } | |
947 | ||
9d1c15ef JH |
948 | /* vi: aw ai sw=2 |
949 | */ | |
059ec3d9 | 950 | /* End of spool_in.c */ |