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_hdrdrror 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 tree_nonrecipients = NULL;
289 #ifdef EXPERIMENTAL_BRIGHTMAIL
296 dkim_disable_verify = FALSE;
297 dkim_collect_input = FALSE;
301 tls_in.certificate_verified = FALSE;
302 # ifdef EXPERIMENTAL_DANE
303 tls_in.dane_verified = FALSE;
305 tls_in.cipher = NULL;
306 # ifndef COMPILE_UTILITY /* tls support fns not built in */
307 tls_free_cert(&tls_in.ourcert);
308 tls_free_cert(&tls_in.peercert);
310 tls_in.peerdn = NULL;
312 tls_in.ocsp = OCSP_NOT_REQ;
315 #ifdef WITH_CONTENT_SCAN
318 spam_score_int = NULL;
321 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
322 message_smtputf8 = FALSE;
323 message_utf8_downconvert = 0;
329 /* Generate the full name and open the file. If message_subdir is already
330 set, just look in the given directory. Otherwise, look in both the split
331 and unsplit directories, as for the data file above. */
333 for (n = 0; n < 2; n++)
336 message_subdir[0] = split_spool_directory == (n == 0) ? name[5] : 0;
338 if ((f = Ufopen(spool_fname(US"input", message_subdir, name, US""), "rb")))
340 if (n != 0 || subdir_set || errno != ENOENT)
341 return spool_read_notopen;
346 #ifndef COMPILE_UTILITY
347 DEBUG(D_deliver) debug_printf("reading spool file %s\n", name);
348 #endif /* COMPILE_UTILITY */
350 /* The first line of a spool file contains the message id followed by -H (i.e.
351 the file name), in order to make the file self-identifying. */
353 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
354 if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 ||
355 Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0)
356 goto SPOOL_FORMAT_ERROR;
358 /* The next three lines in the header file are in a fixed format. The first
359 contains the login, uid, and gid of the user who caused the file to be written.
360 There are known cases where a negative gid is used, so we allow for both
361 negative uids and gids. The second contains the mail address of the message's
362 sender, enclosed in <>. The third contains the time the message was received,
363 and the number of warning messages for delivery delays that have been sent. */
365 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
367 p = big_buffer + Ustrlen(big_buffer);
368 while (p > big_buffer && isspace(p[-1])) p--;
370 if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
371 while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
373 if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
375 if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR;
376 while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--;
378 if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR;
381 originator_login = string_copy(big_buffer);
382 originator_uid = (uid_t)uid;
383 originator_gid = (gid_t)gid;
386 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
387 n = Ustrlen(big_buffer);
388 if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>')
389 goto SPOOL_FORMAT_ERROR;
391 sender_address = store_get(n-2);
392 Ustrncpy(sender_address, big_buffer+1, n-3);
393 sender_address[n-3] = 0;
396 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
397 if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2)
398 goto SPOOL_FORMAT_ERROR;
400 message_age = time(NULL) - received_time;
402 #ifndef COMPILE_UTILITY
403 DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n",
404 originator_login, (long int)originator_uid, (long int)originator_gid,
406 #endif /* COMPILE_UTILITY */
408 /* Now there may be a number of optional lines, each starting with "-". If you
409 add a new setting here, make sure you set the default above.
411 Because there are now quite a number of different possibilities, we use a
412 switch on the first character to avoid too many failing tests. Thanks to Nico
413 Erfurth for the patch that implemented this. I have made it even more efficient
414 by not re-scanning the first two characters.
416 To allow new versions of Exim that add additional flags to interwork with older
417 versions that do not understand them, just ignore any lines starting with "-"
418 that we don't recognize. Otherwise it wouldn't be possible to back off a new
419 version that left new-style flags written on the spool. */
425 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
426 if (big_buffer[0] != '-') break;
427 while ( (len = Ustrlen(big_buffer)) == big_buffer_size-1
428 && big_buffer[len-1] != '\n'
430 { /* buffer not big enough for line; certs make this possible */
432 if (big_buffer_size >= BIG_BUFFER_SIZE*4) goto SPOOL_READ_ERROR;
433 buf = store_get_perm(big_buffer_size *= 2);
434 memcpy(buf, big_buffer, --len);
436 if (Ufgets(big_buffer+len, big_buffer_size-len, f) == NULL)
437 goto SPOOL_READ_ERROR;
439 big_buffer[len-1] = 0;
441 switch(big_buffer[1])
445 /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL
446 variable, because Exim allows any number of them, with arbitrary names.
447 The line in the spool file is "-acl[cm] <name> <length>". The name excludes
450 if (Ustrncmp(p, "clc ", 4) == 0 ||
451 Ustrncmp(p, "clm ", 4) == 0)
453 uschar *name, *endptr;
456 endptr = Ustrchr(big_buffer + 6, ' ');
457 if (endptr == NULL) goto SPOOL_FORMAT_ERROR;
458 name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6,
460 if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR;
461 node = acl_var_create(name);
462 node->data.ptr = store_get(count + 1);
463 if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
464 ((uschar*)node->data.ptr)[count] = 0;
467 else if (Ustrcmp(p, "llow_unqualified_recipient") == 0)
468 allow_unqualified_recipient = TRUE;
469 else if (Ustrcmp(p, "llow_unqualified_sender") == 0)
470 allow_unqualified_sender = TRUE;
472 else if (Ustrncmp(p, "uth_id", 6) == 0)
473 authenticated_id = string_copy(big_buffer + 9);
474 else if (Ustrncmp(p, "uth_sender", 10) == 0)
475 authenticated_sender = string_copy(big_buffer + 13);
476 else if (Ustrncmp(p, "ctive_hostname", 14) == 0)
477 smtp_active_hostname = string_copy(big_buffer + 17);
479 /* For long-term backward compatibility, we recognize "-acl", which was
480 used before the number of ACL variables changed from 10 to 20. This was
481 before the subsequent change to an arbitrary number of named variables.
482 This code is retained so that upgrades from very old versions can still
483 handle old-format spool files. The value given after "-acl" is a number
484 that is 0-9 for connection variables, and 10-19 for message variables. */
486 else if (Ustrncmp(p, "cl ", 3) == 0)
488 unsigned index, count;
489 uschar name[20]; /* Need plenty of space for %u format */
491 if ( sscanf(CS big_buffer + 5, "%u %u", &index, &count) != 2
494 goto SPOOL_FORMAT_ERROR;
496 (void) string_format(name, sizeof(name), "%c%u", 'c', index);
498 (void) string_format(name, sizeof(name), "%c%u", 'm', index - 10);
499 node = acl_var_create(name);
500 node->data.ptr = store_get(count + 1);
501 if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR;
502 (US node->data.ptr)[count] = '\0';
507 if (Ustrncmp(p, "ody_linecount", 13) == 0)
508 body_linecount = Uatoi(big_buffer + 15);
509 else if (Ustrncmp(p, "ody_zerocount", 13) == 0)
510 body_zerocount = Uatoi(big_buffer + 15);
511 #ifdef EXPERIMENTAL_BRIGHTMAIL
512 else if (Ustrncmp(p, "mi_verdicts ", 12) == 0)
513 bmi_verdicts = string_copy(big_buffer + 14);
518 if (Ustrcmp(p, "eliver_firsttime") == 0)
519 deliver_firsttime = TRUE;
520 /* Check if the dsn flags have been set in the header file */
521 else if (Ustrncmp(p, "sn_ret", 6) == 0)
522 dsn_ret= atoi(CS big_buffer + 8);
523 else if (Ustrncmp(p, "sn_envid", 8) == 0)
524 dsn_envid = string_copy(big_buffer + 11);
528 if (Ustrncmp(p, "rozen", 5) == 0)
530 deliver_freeze = TRUE;
531 if (sscanf(CS big_buffer+7, TIME_T_FMT, &deliver_frozen_at) != 1)
532 goto SPOOL_READ_ERROR;
537 if (Ustrcmp(p, "ost_lookup_deferred") == 0)
538 host_lookup_deferred = TRUE;
539 else if (Ustrcmp(p, "ost_lookup_failed") == 0)
540 host_lookup_failed = TRUE;
541 else if (Ustrncmp(p, "ost_auth", 8) == 0)
542 sender_host_authenticated = string_copy(big_buffer + 11);
543 else if (Ustrncmp(p, "ost_name", 8) == 0)
544 sender_host_name = string_copy(big_buffer + 11);
545 else if (Ustrncmp(p, "elo_name", 8) == 0)
546 sender_helo_name = string_copy(big_buffer + 11);
548 /* We now record the port number after the address, separated by a
549 dot. For compatibility during upgrading, do nothing if there
550 isn't a value (it gets left at zero). */
552 else if (Ustrncmp(p, "ost_address", 11) == 0)
554 sender_host_port = host_address_extract_port(big_buffer + 14);
555 sender_host_address = string_copy(big_buffer + 14);
560 if (Ustrncmp(p, "nterface_address", 16) == 0)
562 interface_port = host_address_extract_port(big_buffer + 19);
563 interface_address = string_copy(big_buffer + 19);
565 else if (Ustrncmp(p, "dent", 4) == 0)
566 sender_ident = string_copy(big_buffer + 7);
570 if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE;
571 else if (Ustrcmp(big_buffer, "-localerror") == 0)
572 local_error_message = TRUE;
573 else if (Ustrncmp(p, "ocal_scan ", 10) == 0)
574 local_scan_data = string_copy(big_buffer + 12);
578 if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE;
579 else if (Ustrncmp(p, "ax_received_linelength", 22) == 0)
580 max_received_linelength = Uatoi(big_buffer + 24);
584 if (*p == 0) dont_deliver = TRUE; /* -N */
588 if (Ustrncmp(p, "eceived_protocol", 16) == 0)
589 received_protocol = string_copy(big_buffer + 19);
593 if (Ustrncmp(p, "ender_set_untrusted", 19) == 0)
594 sender_set_untrusted = TRUE;
595 #ifdef WITH_CONTENT_SCAN
596 else if (Ustrncmp(p, "pam_bar ", 8) == 0)
597 spam_bar = string_copy(big_buffer + 10);
598 else if (Ustrncmp(p, "pam_score ", 10) == 0)
599 spam_score = string_copy(big_buffer + 12);
600 else if (Ustrncmp(p, "pam_score_int ", 14) == 0)
601 spam_score_int = string_copy(big_buffer + 16);
603 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
604 else if (Ustrncmp(p, "mtputf8", 7) == 0)
605 message_smtputf8 = TRUE;
611 if (Ustrncmp(p, "ls_certificate_verified", 23) == 0)
612 tls_in.certificate_verified = TRUE;
613 else if (Ustrncmp(p, "ls_cipher", 9) == 0)
614 tls_in.cipher = string_copy(big_buffer + 12);
615 # ifndef COMPILE_UTILITY /* tls support fns not built in */
616 else if (Ustrncmp(p, "ls_ourcert", 10) == 0)
617 (void) tls_import_cert(big_buffer + 13, &tls_in.ourcert);
618 else if (Ustrncmp(p, "ls_peercert", 11) == 0)
619 (void) tls_import_cert(big_buffer + 14, &tls_in.peercert);
621 else if (Ustrncmp(p, "ls_peerdn", 9) == 0)
622 tls_in.peerdn = string_unprinting(string_copy(big_buffer + 12));
623 else if (Ustrncmp(p, "ls_sni", 6) == 0)
624 tls_in.sni = string_unprinting(string_copy(big_buffer + 9));
625 else if (Ustrncmp(p, "ls_ocsp", 7) == 0)
626 tls_in.ocsp = big_buffer[10] - '0';
630 #if defined(SUPPORT_I18N) && !defined(COMPILE_UTILITY)
632 if (Ustrncmp(p, "tf8_downcvt", 11) == 0)
633 message_utf8_downconvert = 1;
634 else if (Ustrncmp(p, "tf8_optdowncvt", 15) == 0)
635 message_utf8_downconvert = -1;
639 default: /* Present because some compilers complain if all */
640 break; /* possibilities are not covered. */
644 /* Build sender_fullhost if required */
646 #ifndef COMPILE_UTILITY
647 host_build_sender_fullhost();
648 #endif /* COMPILE_UTILITY */
650 #ifndef COMPILE_UTILITY
652 debug_printf("sender_local=%d ident=%s\n", sender_local,
653 (sender_ident == NULL)? US"unset" : sender_ident);
654 #endif /* COMPILE_UTILITY */
656 /* We now have the tree of addresses NOT to deliver to, or a line
657 containing "XX", indicating no tree. */
659 if (Ustrncmp(big_buffer, "XX\n", 3) != 0 &&
660 !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size))
661 goto SPOOL_FORMAT_ERROR;
663 #ifndef COMPILE_UTILITY
666 debug_printf("Non-recipients:\n");
667 debug_print_tree(tree_nonrecipients);
669 #endif /* COMPILE_UTILITY */
671 /* After reading the tree, the next line has not yet been read into the
672 buffer. It contains the count of recipients which follow on separate lines. */
674 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
675 if (sscanf(CS big_buffer, "%d", &rcount) != 1) goto SPOOL_FORMAT_ERROR;
677 #ifndef COMPILE_UTILITY
678 DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount);
679 #endif /* COMPILE_UTILITY */
681 recipients_list_max = rcount;
682 recipients_list = store_get(rcount * sizeof(recipient_item));
684 for (recipients_count = 0; recipients_count < rcount; recipients_count++)
689 uschar *orcpt = NULL;
690 uschar *errors_to = NULL;
693 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
694 nn = Ustrlen(big_buffer);
695 if (nn < 2) goto SPOOL_FORMAT_ERROR;
697 /* Remove the newline; this terminates the address if there is no additional
700 p = big_buffer + nn - 1;
703 /* Look back from the end of the line for digits and special terminators.
704 Since an address must end with a domain, we can tell that extra data is
705 present by the presence of the terminator, which is always some character
706 that cannot exist in a domain. (If I'd thought of the need for additional
707 data early on, I'd have put it at the start, with the address at the end. As
708 it is, we have to operate backwards. Addresses are permitted to contain
711 This code has to cope with various versions of this data that have evolved
712 over time. In all cases, the line might just contain an address, with no
713 additional data. Otherwise, the possibilities are as follows:
715 Exim 3 type: <address><space><digits>,<digits>,<digits>
717 The second set of digits is the parent number for one_time addresses. The
718 other values were remnants of earlier experiments that were abandoned.
720 Exim 4 first type: <address><space><digits>
722 The digits are the parent number for one_time addresses.
724 Exim 4 new type: <address><space><data>#<type bits>
726 The type bits indicate what the contents of the data are.
728 Bit 01 indicates that, reading from right to left, the data
729 ends with <errors_to address><space><len>,<pno> where pno is
730 the parent number for one_time addresses, and len is the length
731 of the errors_to address (zero meaning none).
733 Bit 02 indicates that, again reading from right to left, the data continues
734 with orcpt len(orcpt),dsn_flags
737 while (isdigit(*p)) p--;
739 /* Handle Exim 3 spool files */
744 while (isdigit(*(--p)) || *p == ',');
748 (void)sscanf(CS p, "%d,%d", &dummy, &pno);
752 /* Handle early Exim 4 spool files */
757 (void)sscanf(CS p, "%d", &pno);
760 /* Handle current format Exim 4 spool files */
766 #if !defined (COMPILE_UTILITY)
767 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - Exim 4 standard format spoolfile\n");
770 (void)sscanf(CS p+1, "%d", &flags);
772 if ((flags & 0x01) != 0) /* one_time data exists */
775 while (isdigit(*(--p)) || *p == ',' || *p == '-');
776 (void)sscanf(CS p+1, "%d,%d", &len, &pno);
781 errors_to = string_copy(p);
785 *(--p) = 0; /* Terminate address */
786 if ((flags & 0x02) != 0) /* one_time data exists */
789 while (isdigit(*(--p)) || *p == ',' || *p == '-');
790 (void)sscanf(CS p+1, "%d,%d", &len, &dsn_flags);
795 orcpt = string_copy(p);
799 *(--p) = 0; /* Terminate address */
801 #if !defined(COMPILE_UTILITY)
803 { DEBUG(D_deliver) debug_printf("**** SPOOL_IN - No additional fields\n"); }
805 if ((orcpt != NULL) || (dsn_flags != 0))
807 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| orcpt: |%s| dsn_flags: %d\n",
808 big_buffer, orcpt, dsn_flags);
810 if (errors_to != NULL)
812 DEBUG(D_deliver) debug_printf("**** SPOOL_IN - address: |%s| errorsto: |%s|\n",
813 big_buffer, errors_to);
817 recipients_list[recipients_count].address = string_copy(big_buffer);
818 recipients_list[recipients_count].pno = pno;
819 recipients_list[recipients_count].errors_to = errors_to;
820 recipients_list[recipients_count].orcpt = orcpt;
821 recipients_list[recipients_count].dsn_flags = dsn_flags;
824 /* The remainder of the spool header file contains the headers for the message,
825 separated off from the previous data by a blank line. Each header is preceded
826 by a count of its length and either a certain letter (for various identified
827 headers), space (for a miscellaneous live header) or an asterisk (for a header
828 that has been rewritten). Count the Received: headers. We read the headers
829 always, in order to check on the format of the file, but only create a header
830 list if requested to do so. */
833 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
834 if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
836 while ((n = fgetc(f)) != EOF)
842 if (!isdigit(n)) goto SPOOL_FORMAT_ERROR;
843 if(ungetc(n, f) == EOF || fscanf(f, "%d%c ", &n, flag) == EOF)
844 goto SPOOL_READ_ERROR;
845 if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */
849 h = store_get(sizeof(header_line));
853 h->text = store_get(n+1);
855 if (h->type == htype_received) received_count++;
857 if (header_list == NULL) header_list = h;
858 else header_last->next = h;
861 for (i = 0; i < n; i++)
864 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
865 if (c == '\n' && h->type != htype_old) message_linecount++;
871 /* Not requiring header data, just skip through the bytes */
873 else for (i = 0; i < n; i++)
876 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
880 /* We have successfully read the data in the header file. Update the message
881 line count by adding the body linecount to the header linecount. Close the file
882 and give a positive response. */
884 #ifndef COMPILE_UTILITY
885 DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n",
886 body_linecount, message_linecount);
887 #endif /* COMPILE_UTILITY */
889 message_linecount += body_linecount;
892 return spool_read_OK;
895 /* There was an error reading the spool or there was missing data,
896 or there was a format error. A "read error" with no errno means an
897 unexpected EOF, which we treat as a format error. */
904 #ifndef COMPILE_UTILITY
905 DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name);
906 #endif /* COMPILE_UTILITY */
910 return inheader? spool_read_hdrerror : spool_read_enverror;
915 #ifndef COMPILE_UTILITY
916 DEBUG(D_any) debug_printf("Format error in spool file %s\n", name);
917 #endif /* COMPILE_UTILITY */
920 errno = ERRNO_SPOOLFORMAT;
921 return inheader? spool_read_hdrerror : spool_read_enverror;
926 /* End of spool_in.c */