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 As called by deliver_message() (at least) we are operating as root.
30 Argument: the id of the message
31 Returns: fd if file successfully opened and locked, else -1
33 Side effect: message_subdir is set for the (possibly split) spool directory
37 spool_open_datafile(uschar *id)
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
51 for (i = 0; i < 2; i++)
56 message_subdir[0] = split_spool_directory == i ? '\0' : id[5];
57 fname = spool_fname(US"input", message_subdir, id, US"-D");
58 DEBUG(D_deliver) debug_printf("Trying spool file %s\n", fname);
60 if ((fd = Uopen(fname,
64 O_RDWR | O_APPEND, 0)) >= 0)
71 log_write(0, LOG_MAIN, "Spool%s%s file %s-D not found",
72 *queue_name ? US" Q=" : US"",
73 *queue_name ? queue_name : US"",
77 log_write(0, LOG_MAIN, "Spool error for %s: %s", fname, strerror(errno));
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
91 (void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
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;
99 if (fcntl(fd, F_SETLK, &lock_data) < 0)
101 log_write(L_skip_delivery,
103 "Spool file is locked (another process is handling this message)");
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. */
112 if (fstat(fd, &statbuf) == 0)
114 message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET;
115 message_size = message_body_size + 1;
120 #endif /* COMPILE_UTILITY */
124 /*************************************************
125 * Read non-recipients tree from spool file *
126 *************************************************/
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:
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.
134 . The left subtree (if any) then follows, then the right subtree (if any).
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.
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.
146 Returns: maximum depth below the node, including the node itself
150 count_below(tree_node *node)
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);
160 /* This is the real function...
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
168 Returns: FALSE on format error
172 read_nonrecipients_tree(tree_node **connect, FILE *f, uschar *buffer,
176 int n = Ustrlen(buffer);
177 BOOL right = buffer[1] == 'Y';
179 if (n < 5) return FALSE; /* malformed line */
180 buffer[n-1] = 0; /* Remove \n */
181 node = store_get(sizeof(tree_node) + n - 3);
183 Ustrcpy(node->name, buffer + 3);
184 node->data.ptr = NULL;
186 if (buffer[0] == 'Y')
188 if (Ufgets(buffer, buffer_size, f) == NULL ||
189 !read_nonrecipients_tree(&node->left, f, buffer, buffer_size))
192 else node->left = NULL;
196 if (Ufgets(buffer, buffer_size, f) == NULL ||
197 !read_nonrecipients_tree(&node->right, f, buffer, buffer_size))
200 else node->right = NULL;
202 (void) count_below(*connect);
209 /*************************************************
210 * Read spool header file *
211 *************************************************/
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.
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
225 As called from deliver_message() (at least) we are running as root.
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
232 Returns: spool_read_OK success
233 spool_read_notopen open failed
234 spool_read_enverror error in the envelope portion
235 spool_read_hdrerror error in the header portion
239 spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set)
245 BOOL inheader = FALSE;
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. */
252 acl_var_c = acl_var_m = NULL;
253 authenticated_id = NULL;
254 authenticated_sender = NULL;
255 allow_unqualified_recipient = FALSE;
256 allow_unqualified_sender = FALSE;
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;
265 host_lookup_deferred = FALSE;
266 host_lookup_failed = FALSE;
267 interface_address = NULL;
269 local_error_message = FALSE;
270 local_scan_data = NULL;
271 max_received_linelength = 0;
272 message_linecount = 0;
273 received_protocol = NULL;
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;
284 sender_local = FALSE;
285 sender_set_untrusted = FALSE;
286 smtp_active_hostname = primary_hostname;
287 #ifndef COMPILE_UTILITY
288 spool_file_wireformat = FALSE;
290 tree_nonrecipients = NULL;
292 #ifdef EXPERIMENTAL_BRIGHTMAIL
299 dkim_disable_verify = FALSE;
300 dkim_collect_input = FALSE;
304 tls_in.certificate_verified = FALSE;
305 # ifdef EXPERIMENTAL_DANE
306 tls_in.dane_verified = FALSE;
308 tls_in.cipher = NULL;
309 # ifndef COMPILE_UTILITY /* tls support fns not built in */
310 tls_free_cert(&tls_in.ourcert);
311 tls_free_cert(&tls_in.peercert);
313 tls_in.peerdn = NULL;
315 tls_in.ocsp = OCSP_NOT_REQ;
318 #ifdef WITH_CONTENT_SCAN
321 spam_score_int = NULL;
324 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
325 message_smtputf8 = FALSE;
326 message_utf8_downconvert = 0;
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. */
336 for (n = 0; n < 2; n++)
339 message_subdir[0] = split_spool_directory == (n == 0) ? name[5] : 0;
341 if ((f = Ufopen(spool_fname(US"input", message_subdir, name, US""), "rb")))
343 if (n != 0 || subdir_set || errno != ENOENT)
344 return spool_read_notopen;
349 #ifndef COMPILE_UTILITY
350 DEBUG(D_deliver) debug_printf("reading spool file %s\n", name);
351 #endif /* COMPILE_UTILITY */
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. */
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;
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.
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. */
368 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
370 p = big_buffer + Ustrlen(big_buffer);
371 while (p > big_buffer && isspace(p[-1])) p--;
373 if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
374 while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
376 if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
378 if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
379 while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
381 if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
384 originator_login = string_copy(big_buffer);
385 originator_uid = (uid_t)uid;
386 originator_gid = (gid_t)gid;
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;
394 sender_address = store_get(n-2);
395 Ustrncpy(sender_address, big_buffer+1, n-3);
396 sender_address[n-3] = 0;
399 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
400 if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2)
401 goto SPOOL_FORMAT_ERROR;
403 message_age = time(NULL) - received_time;
405 #ifndef COMPILE_UTILITY
406 DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n",
407 originator_login, (long int)originator_uid, (long int)originator_gid,
409 #endif /* COMPILE_UTILITY */
411 /* Now there may be a number of optional lines, each starting with "-". If you
412 add a new setting here, make sure you set the default above.
414 Because there are now quite a number of different possibilities, we use a
415 switch on the first character to avoid too many failing tests. Thanks to Nico
416 Erfurth for the patch that implemented this. I have made it even more efficient
417 by not re-scanning the first two characters.
419 To allow new versions of Exim that add additional flags to interwork with older
420 versions that do not understand them, just ignore any lines starting with "-"
421 that we don't recognize. Otherwise it wouldn't be possible to back off a new
422 version that left new-style flags written on the spool. */
428 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
429 if (big_buffer[0] != '-') break;
430 while ( (len = Ustrlen(big_buffer)) == big_buffer_size-1
431 && big_buffer[len-1] != '\n'
433 { /* buffer not big enough for line; certs make this possible */
435 if (big_buffer_size >= BIG_BUFFER_SIZE*4) goto SPOOL_READ_ERROR;
436 buf = store_get_perm(big_buffer_size *= 2);
437 memcpy(buf, big_buffer, --len);
439 if (Ufgets(big_buffer+len, big_buffer_size-len, f) == NULL)
440 goto SPOOL_READ_ERROR;
442 big_buffer[len-1] = 0;
444 switch(big_buffer[1])
448 /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL
449 variable, because Exim allows any number of them, with arbitrary names.
450 The line in the spool file is "-acl[cm] <name> <length>". The name excludes
453 if (Ustrncmp(p, "clc ", 4) == 0 ||
454 Ustrncmp(p, "clm ", 4) == 0)
456 uschar *name, *endptr;
459 endptr = Ustrchr(big_buffer + 6, ' ');
460 if (endptr == NULL) goto SPOOL_FORMAT_ERROR;
461 name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6,
463 if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR;
464 node = acl_var_create(name);
465 node->data.ptr = store_get(count + 1);
466 if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
467 ((uschar*)node->data.ptr)[count] = 0;
470 else if (Ustrcmp(p, "llow_unqualified_recipient") == 0)
471 allow_unqualified_recipient = TRUE;
472 else if (Ustrcmp(p, "llow_unqualified_sender") == 0)
473 allow_unqualified_sender = TRUE;
475 else if (Ustrncmp(p, "uth_id", 6) == 0)
476 authenticated_id = string_copy(big_buffer + 9);
477 else if (Ustrncmp(p, "uth_sender", 10) == 0)
478 authenticated_sender = string_copy(big_buffer + 13);
479 else if (Ustrncmp(p, "ctive_hostname", 14) == 0)
480 smtp_active_hostname = string_copy(big_buffer + 17);
482 /* For long-term backward compatibility, we recognize "-acl", which was
483 used before the number of ACL variables changed from 10 to 20. This was
484 before the subsequent change to an arbitrary number of named variables.
485 This code is retained so that upgrades from very old versions can still
486 handle old-format spool files. The value given after "-acl" is a number
487 that is 0-9 for connection variables, and 10-19 for message variables. */
489 else if (Ustrncmp(p, "cl ", 3) == 0)
491 unsigned index, count;
492 uschar name[20]; /* Need plenty of space for %u format */
494 if ( sscanf(CS big_buffer + 5, "%u %u", &index, &count) != 2
496 || count > 16384 /* arbitrary limit on variable size */
498 goto SPOOL_FORMAT_ERROR;
500 (void) string_format(name, sizeof(name), "%c%u", 'c', index);
502 (void) string_format(name, sizeof(name), "%c%u", 'm', index - 10);
503 node = acl_var_create(name);
504 node->data.ptr = store_get(count + 1);
505 /* We sanity-checked the count, so disable the Coverity error */
506 /* coverity[tainted_data] */
507 if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
508 (US node->data.ptr)[count] = '\0';
513 if (Ustrncmp(p, "ody_linecount", 13) == 0)
514 body_linecount = Uatoi(big_buffer + 15);
515 else if (Ustrncmp(p, "ody_zerocount", 13) == 0)
516 body_zerocount = Uatoi(big_buffer + 15);
517 #ifdef EXPERIMENTAL_BRIGHTMAIL
518 else if (Ustrncmp(p, "mi_verdicts ", 12) == 0)
519 bmi_verdicts = string_copy(big_buffer + 14);
524 if (Ustrcmp(p, "eliver_firsttime") == 0)
525 deliver_firsttime = TRUE;
526 /* Check if the dsn flags have been set in the header file */
527 else if (Ustrncmp(p, "sn_ret", 6) == 0)
528 dsn_ret= atoi(CS big_buffer + 8);
529 else if (Ustrncmp(p, "sn_envid", 8) == 0)
530 dsn_envid = string_copy(big_buffer + 11);
534 if (Ustrncmp(p, "rozen", 5) == 0)
536 deliver_freeze = TRUE;
537 if (sscanf(CS big_buffer+7, TIME_T_FMT, &deliver_frozen_at) != 1)
538 goto SPOOL_READ_ERROR;
543 if (Ustrcmp(p, "ost_lookup_deferred") == 0)
544 host_lookup_deferred = TRUE;
545 else if (Ustrcmp(p, "ost_lookup_failed") == 0)
546 host_lookup_failed = TRUE;
547 else if (Ustrncmp(p, "ost_auth", 8) == 0)
548 sender_host_authenticated = string_copy(big_buffer + 11);
549 else if (Ustrncmp(p, "ost_name", 8) == 0)
550 sender_host_name = string_copy(big_buffer + 11);
551 else if (Ustrncmp(p, "elo_name", 8) == 0)
552 sender_helo_name = string_copy(big_buffer + 11);
554 /* We now record the port number after the address, separated by a
555 dot. For compatibility during upgrading, do nothing if there
556 isn't a value (it gets left at zero). */
558 else if (Ustrncmp(p, "ost_address", 11) == 0)
560 sender_host_port = host_address_extract_port(big_buffer + 14);
561 sender_host_address = string_copy(big_buffer + 14);
566 if (Ustrncmp(p, "nterface_address", 16) == 0)
568 interface_port = host_address_extract_port(big_buffer + 19);
569 interface_address = string_copy(big_buffer + 19);
571 else if (Ustrncmp(p, "dent", 4) == 0)
572 sender_ident = string_copy(big_buffer + 7);
576 if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE;
577 else if (Ustrcmp(big_buffer, "-localerror") == 0)
578 local_error_message = TRUE;
579 else if (Ustrncmp(p, "ocal_scan ", 10) == 0)
580 local_scan_data = string_copy(big_buffer + 12);
584 if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE;
585 else if (Ustrncmp(p, "ax_received_linelength", 22) == 0)
586 max_received_linelength = Uatoi(big_buffer + 24);
590 if (*p == 0) dont_deliver = TRUE; /* -N */
594 if (Ustrncmp(p, "eceived_protocol", 16) == 0)
595 received_protocol = string_copy(big_buffer + 19);
599 if (Ustrncmp(p, "ender_set_untrusted", 19) == 0)
600 sender_set_untrusted = TRUE;
601 #ifdef WITH_CONTENT_SCAN
602 else if (Ustrncmp(p, "pam_bar ", 8) == 0)
603 spam_bar = string_copy(big_buffer + 10);
604 else if (Ustrncmp(p, "pam_score ", 10) == 0)
605 spam_score = string_copy(big_buffer + 12);
606 else if (Ustrncmp(p, "pam_score_int ", 14) == 0)
607 spam_score_int = string_copy(big_buffer + 16);
609 #ifndef COMPILE_UTILITY
610 else if (Ustrncmp(p, "pool_file_wireformat", 20) == 0)
611 spool_file_wireformat = TRUE;
613 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
614 else if (Ustrncmp(p, "mtputf8", 7) == 0)
615 message_smtputf8 = TRUE;
621 if (Ustrncmp(p, "ls_certificate_verified", 23) == 0)
622 tls_in.certificate_verified = TRUE;
623 else if (Ustrncmp(p, "ls_cipher", 9) == 0)
624 tls_in.cipher = string_copy(big_buffer + 12);
625 # ifndef COMPILE_UTILITY /* tls support fns not built in */
626 else if (Ustrncmp(p, "ls_ourcert", 10) == 0)
627 (void) tls_import_cert(big_buffer + 13, &tls_in.ourcert);
628 else if (Ustrncmp(p, "ls_peercert", 11) == 0)
629 (void) tls_import_cert(big_buffer + 14, &tls_in.peercert);
631 else if (Ustrncmp(p, "ls_peerdn", 9) == 0)
632 tls_in.peerdn = string_unprinting(string_copy(big_buffer + 12));
633 else if (Ustrncmp(p, "ls_sni", 6) == 0)
634 tls_in.sni = string_unprinting(string_copy(big_buffer + 9));
635 else if (Ustrncmp(p, "ls_ocsp", 7) == 0)
636 tls_in.ocsp = big_buffer[10] - '0';
640 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
642 if (Ustrncmp(p, "tf8_downcvt", 11) == 0)
643 message_utf8_downconvert = 1;
644 else if (Ustrncmp(p, "tf8_optdowncvt", 15) == 0)
645 message_utf8_downconvert = -1;
649 default: /* Present because some compilers complain if all */
650 break; /* possibilities are not covered. */
654 /* Build sender_fullhost if required */
656 #ifndef COMPILE_UTILITY
657 host_build_sender_fullhost();
658 #endif /* COMPILE_UTILITY */
660 #ifndef COMPILE_UTILITY
662 debug_printf("sender_local=%d ident=%s\n", sender_local,
663 (sender_ident == NULL)? US"unset" : sender_ident);
664 #endif /* COMPILE_UTILITY */
666 /* We now have the tree of addresses NOT to deliver to, or a line
667 containing "XX", indicating no tree. */
669 if (Ustrncmp(big_buffer, "XX\n", 3) != 0 &&
670 !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size))
671 goto SPOOL_FORMAT_ERROR;
673 #ifndef COMPILE_UTILITY
676 debug_printf("Non-recipients:\n");
677 debug_print_tree(tree_nonrecipients);
679 #endif /* COMPILE_UTILITY */
681 /* After reading the tree, the next line has not yet been read into the
682 buffer. It contains the count of recipients which follow on separate lines.
683 Apply an arbitrary sanity check.*/
685 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
686 if (sscanf(CS big_buffer, "%d", &rcount) != 1 || rcount > 16384)
687 goto SPOOL_FORMAT_ERROR;
689 #ifndef COMPILE_UTILITY
690 DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount);
691 #endif /* COMPILE_UTILITY */
693 recipients_list_max = rcount;
694 recipients_list = store_get(rcount * sizeof(recipient_item));
696 /* We sanitised the count and know we have enough memory, so disable
697 the Coverity error on recipients_count */
698 /* coverity[tainted_data] */
700 for (recipients_count = 0; recipients_count < rcount; recipients_count++)
705 uschar *orcpt = NULL;
706 uschar *errors_to = NULL;
709 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
710 nn = Ustrlen(big_buffer);
711 if (nn < 2) goto SPOOL_FORMAT_ERROR;
713 /* Remove the newline; this terminates the address if there is no additional
716 p = big_buffer + nn - 1;
719 /* Look back from the end of the line for digits and special terminators.
720 Since an address must end with a domain, we can tell that extra data is
721 present by the presence of the terminator, which is always some character
722 that cannot exist in a domain. (If I'd thought of the need for additional
723 data early on, I'd have put it at the start, with the address at the end. As
724 it is, we have to operate backwards. Addresses are permitted to contain
727 This code has to cope with various versions of this data that have evolved
728 over time. In all cases, the line might just contain an address, with no
729 additional data. Otherwise, the possibilities are as follows:
731 Exim 3 type: <address><space><digits>,<digits>,<digits>
733 The second set of digits is the parent number for one_time addresses. The
734 other values were remnants of earlier experiments that were abandoned.
736 Exim 4 first type: <address><space><digits>
738 The digits are the parent number for one_time addresses.
740 Exim 4 new type: <address><space><data>#<type bits>
742 The type bits indicate what the contents of the data are.
744 Bit 01 indicates that, reading from right to left, the data
745 ends with <errors_to address><space><len>,<pno> where pno is
746 the parent number for one_time addresses, and len is the length
747 of the errors_to address (zero meaning none).
749 Bit 02 indicates that, again reading from right to left, the data continues
750 with orcpt len(orcpt),dsn_flags
753 while (isdigit(*p)) p--;
755 /* Handle Exim 3 spool files */
760 while (isdigit(*(--p)) || *p == ',');
764 (void)sscanf(CS p, "%d,%d", &dummy, &pno);
768 /* Handle early Exim 4 spool files */
773 (void)sscanf(CS p, "%d", &pno);
776 /* Handle current format Exim 4 spool files */
782 #if !defined (COMPILE_UTILITY)
783 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim 4 standard format spoolfile\n");
786 (void)sscanf(CS p+1, "%d", &flags);
788 if ((flags & 0x01) != 0) /* one_time data exists */
791 while (isdigit(*(--p)) || *p == ',' || *p == '-');
792 (void)sscanf(CS p+1, "%d,%d", &len, &pno);
797 errors_to = string_copy(p);
801 *(--p) = 0; /* Terminate address */
802 if ((flags & 0x02) != 0) /* one_time data exists */
805 while (isdigit(*(--p)) || *p == ',' || *p == '-');
806 (void)sscanf(CS p+1, "%d,%d", &len, &dsn_flags);
811 orcpt = string_copy(p);
815 *(--p) = 0; /* Terminate address */
817 #if !defined(COMPILE_UTILITY)
819 { DEBUG(D_deliver) debug_printf("**** SPOOL_IN - No additional fields\n"); }
821 if ((orcpt != NULL) || (dsn_flags != 0))
823 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| orcpt: |%s| dsn_flags: %d\n",
824 big_buffer, orcpt, dsn_flags);
826 if (errors_to != NULL)
828 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| errorsto: |%s|\n",
829 big_buffer, errors_to);
833 recipients_list[recipients_count].address = string_copy(big_buffer);
834 recipients_list[recipients_count].pno = pno;
835 recipients_list[recipients_count].errors_to = errors_to;
836 recipients_list[recipients_count].orcpt = orcpt;
837 recipients_list[recipients_count].dsn_flags = dsn_flags;
840 /* The remainder of the spool header file contains the headers for the message,
841 separated off from the previous data by a blank line. Each header is preceded
842 by a count of its length and either a certain letter (for various identified
843 headers), space (for a miscellaneous live header) or an asterisk (for a header
844 that has been rewritten). Count the Received: headers. We read the headers
845 always, in order to check on the format of the file, but only create a header
846 list if requested to do so. */
849 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
850 if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
852 while ((n = fgetc(f)) != EOF)
858 if (!isdigit(n)) goto SPOOL_FORMAT_ERROR;
859 if(ungetc(n, f) == EOF || fscanf(f, "%d%c ", &n, flag) == EOF)
860 goto SPOOL_READ_ERROR;
861 if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */
865 h = store_get(sizeof(header_line));
869 h->text = store_get(n+1);
871 if (h->type == htype_received) received_count++;
873 if (header_list == NULL) header_list = h;
874 else header_last->next = h;
877 for (i = 0; i < n; i++)
880 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
881 if (c == '\n' && h->type != htype_old) message_linecount++;
887 /* Not requiring header data, just skip through the bytes */
889 else for (i = 0; i < n; i++)
892 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
896 /* We have successfully read the data in the header file. Update the message
897 line count by adding the body linecount to the header linecount. Close the file
898 and give a positive response. */
900 #ifndef COMPILE_UTILITY
901 DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n",
902 body_linecount, message_linecount);
903 #endif /* COMPILE_UTILITY */
905 message_linecount += body_linecount;
908 return spool_read_OK;
911 /* There was an error reading the spool or there was missing data,
912 or there was a format error. A "read error" with no errno means an
913 unexpected EOF, which we treat as a format error. */
920 #ifndef COMPILE_UTILITY
921 DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name);
922 #endif /* COMPILE_UTILITY */
926 return inheader? spool_read_hdrerror : spool_read_enverror;
931 #ifndef COMPILE_UTILITY
932 DEBUG(D_any) debug_printf("Format error in spool file %s\n", name);
933 #endif /* COMPILE_UTILITY */
936 errno = ERRNO_SPOOLFORMAT;
937 return inheader? spool_read_hdrerror : spool_read_enverror;
942 /* End of spool_in.c */