1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2016 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Functions for reading spool files. When compiling for a utility (eximon),
9 not all are needed, and some functionality can be cut out. */
16 #ifndef COMPILE_UTILITY
17 /*************************************************
18 * Open and lock data file *
19 *************************************************/
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
28 Argument: the id of the message
29 Returns: TRUE if file successfully opened and locked
31 Side effect: deliver_datafile is set to the fd of the open file.
35 spool_open_datafile(uschar *id)
40 uschar spoolname[256];
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
49 for (i = 0; i < 2; i++)
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;
61 log_write(0, LOG_MAIN, "Spool file %s-D not found", id);
63 else log_write(0, LOG_MAIN, "Spool error for %s: %s", spoolname,
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
77 (void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
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;
85 if (fcntl(deliver_datafile, F_SETLK, &lock_data) < 0)
87 log_write(L_skip_delivery,
89 "Spool file is locked (another process is handling this message)");
90 (void)close(deliver_datafile);
91 deliver_datafile = -1;
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. */
99 if (fstat(deliver_datafile, &statbuf) == 0)
101 message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET;
102 message_size = message_body_size + 1;
107 #endif /* COMPILE_UTILITY */
111 /*************************************************
112 * Read non-recipients tree from spool file *
113 *************************************************/
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:
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.
121 . The left subtree (if any) then follows, then the right subtree (if any).
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.
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.
133 Returns: maximum depth below the node, including the node itself
137 count_below(tree_node *node)
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);
147 /* This is the real function...
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
155 Returns: FALSE on format error
159 read_nonrecipients_tree(tree_node **connect, FILE *f, uschar *buffer,
163 int n = Ustrlen(buffer);
164 BOOL right = buffer[1] == 'Y';
166 if (n < 5) return FALSE; /* malformed line */
167 buffer[n-1] = 0; /* Remove \n */
168 node = store_get(sizeof(tree_node) + n - 3);
170 Ustrcpy(node->name, buffer + 3);
171 node->data.ptr = NULL;
173 if (buffer[0] == 'Y')
175 if (Ufgets(buffer, buffer_size, f) == NULL ||
176 !read_nonrecipients_tree(&node->left, f, buffer, buffer_size))
179 else node->left = NULL;
183 if (Ufgets(buffer, buffer_size, f) == NULL ||
184 !read_nonrecipients_tree(&node->right, f, buffer, buffer_size))
187 else node->right = NULL;
189 (void) count_below(*connect);
196 /*************************************************
197 * Read spool header file *
198 *************************************************/
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.
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
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
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
224 spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set)
230 BOOL inheader = FALSE;
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. */
237 acl_var_c = acl_var_m = NULL;
238 authenticated_id = NULL;
239 authenticated_sender = NULL;
240 allow_unqualified_recipient = FALSE;
241 allow_unqualified_sender = FALSE;
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;
250 host_lookup_deferred = FALSE;
251 host_lookup_failed = FALSE;
252 interface_address = NULL;
254 local_error_message = FALSE;
255 local_scan_data = NULL;
256 max_received_linelength = 0;
257 message_linecount = 0;
258 received_protocol = NULL;
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;
269 sender_local = FALSE;
270 sender_set_untrusted = FALSE;
271 smtp_active_hostname = primary_hostname;
272 tree_nonrecipients = NULL;
274 #ifdef EXPERIMENTAL_BRIGHTMAIL
281 dkim_disable_verify = FALSE;
282 dkim_collect_input = FALSE;
286 tls_in.certificate_verified = FALSE;
287 # ifdef EXPERIMENTAL_DANE
288 tls_in.dane_verified = FALSE;
290 tls_in.cipher = NULL;
291 # ifndef COMPILE_UTILITY /* tls support fns not built in */
292 tls_free_cert(&tls_in.ourcert);
293 tls_free_cert(&tls_in.peercert);
295 tls_in.peerdn = NULL;
297 tls_in.ocsp = OCSP_NOT_REQ;
300 #ifdef WITH_CONTENT_SCAN
303 spam_score_int = NULL;
306 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
307 message_smtputf8 = FALSE;
308 message_utf8_downconvert = 0;
314 /* Generate the full name and open the file. If message_subdir is already
315 set, just look in the given directory. Otherwise, look in both the split
316 and unsplit directories, as for the data file above. */
318 for (n = 0; n < 2; n++)
321 message_subdir[0] = (split_spool_directory == (n == 0))? name[5] : 0;
322 sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
324 f = Ufopen(big_buffer, "rb");
325 if (f != NULL) break;
326 if (n != 0 || subdir_set || errno != ENOENT) return spool_read_notopen;
331 #ifndef COMPILE_UTILITY
332 DEBUG(D_deliver) debug_printf("reading spool file %s\n", name);
333 #endif /* COMPILE_UTILITY */
335 /* The first line of a spool file contains the message id followed by -H (i.e.
336 the file name), in order to make the file self-identifying. */
338 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
339 if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 ||
340 Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0)
341 goto SPOOL_FORMAT_ERROR;
343 /* The next three lines in the header file are in a fixed format. The first
344 contains the login, uid, and gid of the user who caused the file to be written.
345 There are known cases where a negative gid is used, so we allow for both
346 negative uids and gids. The second contains the mail address of the message's
347 sender, enclosed in <>. The third contains the time the message was received,
348 and the number of warning messages for delivery delays that have been sent. */
350 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
352 p = big_buffer + Ustrlen(big_buffer);
353 while (p > big_buffer && isspace(p[-1])) p--;
355 if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
356 while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
358 if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
360 if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
361 while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
363 if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
366 originator_login = string_copy(big_buffer);
367 originator_uid = (uid_t)uid;
368 originator_gid = (gid_t)gid;
371 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
372 n = Ustrlen(big_buffer);
373 if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>')
374 goto SPOOL_FORMAT_ERROR;
376 sender_address = store_get(n-2);
377 Ustrncpy(sender_address, big_buffer+1, n-3);
378 sender_address[n-3] = 0;
381 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
382 if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2)
383 goto SPOOL_FORMAT_ERROR;
385 message_age = time(NULL) - received_time;
387 #ifndef COMPILE_UTILITY
388 DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n",
389 originator_login, (long int)originator_uid, (long int)originator_gid,
391 #endif /* COMPILE_UTILITY */
393 /* Now there may be a number of optional lines, each starting with "-". If you
394 add a new setting here, make sure you set the default above.
396 Because there are now quite a number of different possibilities, we use a
397 switch on the first character to avoid too many failing tests. Thanks to Nico
398 Erfurth for the patch that implemented this. I have made it even more efficient
399 by not re-scanning the first two characters.
401 To allow new versions of Exim that add additional flags to interwork with older
402 versions that do not understand them, just ignore any lines starting with "-"
403 that we don't recognize. Otherwise it wouldn't be possible to back off a new
404 version that left new-style flags written on the spool. */
410 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
411 if (big_buffer[0] != '-') break;
412 while ( (len = Ustrlen(big_buffer)) == big_buffer_size-1
413 && big_buffer[len-1] != '\n'
415 { /* buffer not big enough for line; certs make this possible */
417 if (big_buffer_size >= BIG_BUFFER_SIZE*4) goto SPOOL_READ_ERROR;
418 buf = store_get_perm(big_buffer_size *= 2);
419 memcpy(buf, big_buffer, --len);
421 if (Ufgets(big_buffer+len, big_buffer_size-len, f) == NULL)
422 goto SPOOL_READ_ERROR;
424 big_buffer[len-1] = 0;
426 switch(big_buffer[1])
430 /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL
431 variable, because Exim allows any number of them, with arbitrary names.
432 The line in the spool file is "-acl[cm] <name> <length>". The name excludes
435 if (Ustrncmp(p, "clc ", 4) == 0 ||
436 Ustrncmp(p, "clm ", 4) == 0)
438 uschar *name, *endptr;
441 endptr = Ustrchr(big_buffer + 6, ' ');
442 if (endptr == NULL) goto SPOOL_FORMAT_ERROR;
443 name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6,
445 if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR;
446 node = acl_var_create(name);
447 node->data.ptr = store_get(count + 1);
448 if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
449 ((uschar*)node->data.ptr)[count] = 0;
452 else if (Ustrcmp(p, "llow_unqualified_recipient") == 0)
453 allow_unqualified_recipient = TRUE;
454 else if (Ustrcmp(p, "llow_unqualified_sender") == 0)
455 allow_unqualified_sender = TRUE;
457 else if (Ustrncmp(p, "uth_id", 6) == 0)
458 authenticated_id = string_copy(big_buffer + 9);
459 else if (Ustrncmp(p, "uth_sender", 10) == 0)
460 authenticated_sender = string_copy(big_buffer + 13);
461 else if (Ustrncmp(p, "ctive_hostname", 14) == 0)
462 smtp_active_hostname = string_copy(big_buffer + 17);
464 /* For long-term backward compatibility, we recognize "-acl", which was
465 used before the number of ACL variables changed from 10 to 20. This was
466 before the subsequent change to an arbitrary number of named variables.
467 This code is retained so that upgrades from very old versions can still
468 handle old-format spool files. The value given after "-acl" is a number
469 that is 0-9 for connection variables, and 10-19 for message variables. */
471 else if (Ustrncmp(p, "cl ", 3) == 0)
474 uschar name[20]; /* Need plenty of space for %d format */
476 if ( sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2
479 goto SPOOL_FORMAT_ERROR;
481 (void) string_format(name, sizeof(name), "%c%d", 'c', index);
483 (void) string_format(name, sizeof(name), "%c%d", 'm', index - 10);
484 node = acl_var_create(name);
485 node->data.ptr = store_get(count + 1);
486 if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
487 ((uschar*)node->data.ptr)[count] = 0;
492 if (Ustrncmp(p, "ody_linecount", 13) == 0)
493 body_linecount = Uatoi(big_buffer + 15);
494 else if (Ustrncmp(p, "ody_zerocount", 13) == 0)
495 body_zerocount = Uatoi(big_buffer + 15);
496 #ifdef EXPERIMENTAL_BRIGHTMAIL
497 else if (Ustrncmp(p, "mi_verdicts ", 12) == 0)
498 bmi_verdicts = string_copy(big_buffer + 14);
503 if (Ustrcmp(p, "eliver_firsttime") == 0)
504 deliver_firsttime = TRUE;
505 /* Check if the dsn flags have been set in the header file */
506 else if (Ustrncmp(p, "sn_ret", 6) == 0)
507 dsn_ret= atoi(CS big_buffer + 8);
508 else if (Ustrncmp(p, "sn_envid", 8) == 0)
509 dsn_envid = string_copy(big_buffer + 11);
513 if (Ustrncmp(p, "rozen", 5) == 0)
515 deliver_freeze = TRUE;
516 if (sscanf(CS big_buffer+7, TIME_T_FMT, &deliver_frozen_at) != 1)
517 goto SPOOL_READ_ERROR;
522 if (Ustrcmp(p, "ost_lookup_deferred") == 0)
523 host_lookup_deferred = TRUE;
524 else if (Ustrcmp(p, "ost_lookup_failed") == 0)
525 host_lookup_failed = TRUE;
526 else if (Ustrncmp(p, "ost_auth", 8) == 0)
527 sender_host_authenticated = string_copy(big_buffer + 11);
528 else if (Ustrncmp(p, "ost_name", 8) == 0)
529 sender_host_name = string_copy(big_buffer + 11);
530 else if (Ustrncmp(p, "elo_name", 8) == 0)
531 sender_helo_name = string_copy(big_buffer + 11);
533 /* We now record the port number after the address, separated by a
534 dot. For compatibility during upgrading, do nothing if there
535 isn't a value (it gets left at zero). */
537 else if (Ustrncmp(p, "ost_address", 11) == 0)
539 sender_host_port = host_address_extract_port(big_buffer + 14);
540 sender_host_address = string_copy(big_buffer + 14);
545 if (Ustrncmp(p, "nterface_address", 16) == 0)
547 interface_port = host_address_extract_port(big_buffer + 19);
548 interface_address = string_copy(big_buffer + 19);
550 else if (Ustrncmp(p, "dent", 4) == 0)
551 sender_ident = string_copy(big_buffer + 7);
555 if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE;
556 else if (Ustrcmp(big_buffer, "-localerror") == 0)
557 local_error_message = TRUE;
558 else if (Ustrncmp(p, "ocal_scan ", 10) == 0)
559 local_scan_data = string_copy(big_buffer + 12);
563 if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE;
564 else if (Ustrncmp(p, "ax_received_linelength", 22) == 0)
565 max_received_linelength = Uatoi(big_buffer + 24);
569 if (*p == 0) dont_deliver = TRUE; /* -N */
573 if (Ustrncmp(p, "eceived_protocol", 16) == 0)
574 received_protocol = string_copy(big_buffer + 19);
578 if (Ustrncmp(p, "ender_set_untrusted", 19) == 0)
579 sender_set_untrusted = TRUE;
580 #ifdef WITH_CONTENT_SCAN
581 else if (Ustrncmp(p, "pam_bar ", 8) == 0)
582 spam_bar = string_copy(big_buffer + 10);
583 else if (Ustrncmp(p, "pam_score ", 10) == 0)
584 spam_score = string_copy(big_buffer + 12);
585 else if (Ustrncmp(p, "pam_score_int ", 14) == 0)
586 spam_score_int = string_copy(big_buffer + 16);
588 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
589 else if (Ustrncmp(p, "mtputf8", 7) == 0)
590 message_smtputf8 = TRUE;
596 if (Ustrncmp(p, "ls_certificate_verified", 23) == 0)
597 tls_in.certificate_verified = TRUE;
598 else if (Ustrncmp(p, "ls_cipher", 9) == 0)
599 tls_in.cipher = string_copy(big_buffer + 12);
600 # ifndef COMPILE_UTILITY /* tls support fns not built in */
601 else if (Ustrncmp(p, "ls_ourcert", 10) == 0)
602 (void) tls_import_cert(big_buffer + 13, &tls_in.ourcert);
603 else if (Ustrncmp(p, "ls_peercert", 11) == 0)
604 (void) tls_import_cert(big_buffer + 14, &tls_in.peercert);
606 else if (Ustrncmp(p, "ls_peerdn", 9) == 0)
607 tls_in.peerdn = string_unprinting(string_copy(big_buffer + 12));
608 else if (Ustrncmp(p, "ls_sni", 6) == 0)
609 tls_in.sni = string_unprinting(string_copy(big_buffer + 9));
610 else if (Ustrncmp(p, "ls_ocsp", 7) == 0)
611 tls_in.ocsp = big_buffer[10] - '0';
615 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
617 if (Ustrncmp(p, "tf8_downcvt", 11) == 0)
618 message_utf8_downconvert = 1;
619 else if (Ustrncmp(p, "tf8_optdowncvt", 15) == 0)
620 message_utf8_downconvert = -1;
624 default: /* Present because some compilers complain if all */
625 break; /* possibilities are not covered. */
629 /* Build sender_fullhost if required */
631 #ifndef COMPILE_UTILITY
632 host_build_sender_fullhost();
633 #endif /* COMPILE_UTILITY */
635 #ifndef COMPILE_UTILITY
637 debug_printf("sender_local=%d ident=%s\n", sender_local,
638 (sender_ident == NULL)? US"unset" : sender_ident);
639 #endif /* COMPILE_UTILITY */
641 /* We now have the tree of addresses NOT to deliver to, or a line
642 containing "XX", indicating no tree. */
644 if (Ustrncmp(big_buffer, "XX\n", 3) != 0 &&
645 !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size))
646 goto SPOOL_FORMAT_ERROR;
648 #ifndef COMPILE_UTILITY
651 debug_printf("Non-recipients:\n");
652 debug_print_tree(tree_nonrecipients);
654 #endif /* COMPILE_UTILITY */
656 /* After reading the tree, the next line has not yet been read into the
657 buffer. It contains the count of recipients which follow on separate lines. */
659 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
660 if (sscanf(CS big_buffer, "%d", &rcount) != 1) goto SPOOL_FORMAT_ERROR;
662 #ifndef COMPILE_UTILITY
663 DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount);
664 #endif /* COMPILE_UTILITY */
666 recipients_list_max = rcount;
667 recipients_list = store_get(rcount * sizeof(recipient_item));
669 for (recipients_count = 0; recipients_count < rcount; recipients_count++)
674 uschar *orcpt = NULL;
675 uschar *errors_to = NULL;
678 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
679 nn = Ustrlen(big_buffer);
680 if (nn < 2) goto SPOOL_FORMAT_ERROR;
682 /* Remove the newline; this terminates the address if there is no additional
685 p = big_buffer + nn - 1;
688 /* Look back from the end of the line for digits and special terminators.
689 Since an address must end with a domain, we can tell that extra data is
690 present by the presence of the terminator, which is always some character
691 that cannot exist in a domain. (If I'd thought of the need for additional
692 data early on, I'd have put it at the start, with the address at the end. As
693 it is, we have to operate backwards. Addresses are permitted to contain
696 This code has to cope with various versions of this data that have evolved
697 over time. In all cases, the line might just contain an address, with no
698 additional data. Otherwise, the possibilities are as follows:
700 Exim 3 type: <address><space><digits>,<digits>,<digits>
702 The second set of digits is the parent number for one_time addresses. The
703 other values were remnants of earlier experiments that were abandoned.
705 Exim 4 first type: <address><space><digits>
707 The digits are the parent number for one_time addresses.
709 Exim 4 new type: <address><space><data>#<type bits>
711 The type bits indicate what the contents of the data are.
713 Bit 01 indicates that, reading from right to left, the data
714 ends with <errors_to address><space><len>,<pno> where pno is
715 the parent number for one_time addresses, and len is the length
716 of the errors_to address (zero meaning none).
718 Bit 02 indicates that, again reading from right to left, the data continues
719 with orcpt len(orcpt),dsn_flags
722 while (isdigit(*p)) p--;
724 /* Handle Exim 3 spool files */
729 while (isdigit(*(--p)) || *p == ',');
733 (void)sscanf(CS p, "%d,%d", &dummy, &pno);
737 /* Handle early Exim 4 spool files */
742 (void)sscanf(CS p, "%d", &pno);
745 /* Handle current format Exim 4 spool files */
751 #if !defined (COMPILE_UTILITY)
752 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim 4 standard format spoolfile\n");
755 (void)sscanf(CS p+1, "%d", &flags);
757 if ((flags & 0x01) != 0) /* one_time data exists */
760 while (isdigit(*(--p)) || *p == ',' || *p == '-');
761 (void)sscanf(CS p+1, "%d,%d", &len, &pno);
766 errors_to = string_copy(p);
770 *(--p) = 0; /* Terminate address */
771 if ((flags & 0x02) != 0) /* one_time data exists */
774 while (isdigit(*(--p)) || *p == ',' || *p == '-');
775 (void)sscanf(CS p+1, "%d,%d", &len, &dsn_flags);
780 orcpt = string_copy(p);
784 *(--p) = 0; /* Terminate address */
786 #if !defined(COMPILE_UTILITY)
788 { DEBUG(D_deliver) debug_printf("**** SPOOL_IN - No additional fields\n"); }
790 if ((orcpt != NULL) || (dsn_flags != 0))
792 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| orcpt: |%s| dsn_flags: %d\n",
793 big_buffer, orcpt, dsn_flags);
795 if (errors_to != NULL)
797 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| errorsto: |%s|\n",
798 big_buffer, errors_to);
802 recipients_list[recipients_count].address = string_copy(big_buffer);
803 recipients_list[recipients_count].pno = pno;
804 recipients_list[recipients_count].errors_to = errors_to;
805 recipients_list[recipients_count].orcpt = orcpt;
806 recipients_list[recipients_count].dsn_flags = dsn_flags;
809 /* The remainder of the spool header file contains the headers for the message,
810 separated off from the previous data by a blank line. Each header is preceded
811 by a count of its length and either a certain letter (for various identified
812 headers), space (for a miscellaneous live header) or an asterisk (for a header
813 that has been rewritten). Count the Received: headers. We read the headers
814 always, in order to check on the format of the file, but only create a header
815 list if requested to do so. */
818 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
819 if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
821 while ((n = fgetc(f)) != EOF)
827 if (!isdigit(n)) goto SPOOL_FORMAT_ERROR;
828 if(ungetc(n, f) == EOF || fscanf(f, "%d%c ", &n, flag) == EOF)
829 goto SPOOL_READ_ERROR;
830 if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */
834 h = store_get(sizeof(header_line));
838 h->text = store_get(n+1);
840 if (h->type == htype_received) received_count++;
842 if (header_list == NULL) header_list = h;
843 else header_last->next = h;
846 for (i = 0; i < n; i++)
849 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
850 if (c == '\n' && h->type != htype_old) message_linecount++;
856 /* Not requiring header data, just skip through the bytes */
858 else for (i = 0; i < n; i++)
861 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
865 /* We have successfully read the data in the header file. Update the message
866 line count by adding the body linecount to the header linecount. Close the file
867 and give a positive response. */
869 #ifndef COMPILE_UTILITY
870 DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n",
871 body_linecount, message_linecount);
872 #endif /* COMPILE_UTILITY */
874 message_linecount += body_linecount;
877 return spool_read_OK;
880 /* There was an error reading the spool or there was missing data,
881 or there was a format error. A "read error" with no errno means an
882 unexpected EOF, which we treat as a format error. */
889 #ifndef COMPILE_UTILITY
890 DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name);
891 #endif /* COMPILE_UTILITY */
895 return inheader? spool_read_hdrerror : spool_read_enverror;
900 #ifndef COMPILE_UTILITY
901 DEBUG(D_any) debug_printf("Format error in spool file %s\n", name);
902 #endif /* COMPILE_UTILITY */
905 errno = ERRNO_SPOOLFORMAT;
906 return inheader? spool_read_hdrerror : spool_read_enverror;
911 /* End of spool_in.c */