aca1b131b890dc96a3e76724dc9831d1671ded77
[exim.git] / src / src / spool_in.c
1 /* $Cambridge: exim/src/src/spool_in.c,v 1.5 2005/01/12 12:24:13 ph10 Exp $ */
2
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
6
7 /* Copyright (c) University of Cambridge 1995 - 2005 */
8 /* See the file NOTICE for conditions of use and distribution. */
9
10 /* Functions for reading spool files. When compiling for a utility (eximon),
11 not all are needed, and some functionality can be cut out. */
12
13
14 #include "exim.h"
15
16
17
18 #ifndef COMPILE_UTILITY
19 /*************************************************
20 * Open and lock data file *
21 *************************************************/
22
23 /* The data file is the one that is used for locking, because the header file
24 can get replaced during delivery because of header rewriting. The file has
25 to opened with write access so that we can get an exclusive lock, but in
26 fact it won't be written to. Just in case there's a major disaster (e.g.
27 overwriting some other file descriptor with the value of this one), open it
28 with append.
29
30 Argument: the id of the message
31 Returns: TRUE if file successfully opened and locked
32
33 Side effect: deliver_datafile is set to the fd of the open file.
34 */
35
36 BOOL
37 spool_open_datafile(uschar *id)
38 {
39 int i;
40 struct stat statbuf;
41 flock_t lock_data;
42 uschar spoolname[256];
43
44 /* If split_spool_directory is set, first look for the file in the appropriate
45 sub-directory of the input directory. If it is not found there, try the input
46 directory itself, to pick up leftovers from before the splitting. If split_
47 spool_directory is not set, first look in the main input directory. If it is
48 not found there, try the split sub-directory, in case it is left over from a
49 splitting state. */
50
51 for (i = 0; i < 2; i++)
52 {
53 int save_errno;
54 message_subdir[0] = (split_spool_directory == (i == 0))? id[5] : 0;
55 sprintf(CS spoolname, "%s/input/%s/%s-D", spool_directory, message_subdir, id);
56 deliver_datafile = Uopen(spoolname, O_RDWR | O_APPEND, 0);
57 if (deliver_datafile >= 0) break;
58 save_errno = errno;
59 if (errno == ENOENT)
60 {
61 if (i == 0) continue;
62 if (!queue_running)
63 log_write(0, LOG_MAIN, "Spool file %s-D not found", id);
64 }
65 else log_write(0, LOG_MAIN, "Spool error for %s: %s", spoolname,
66 strerror(errno));
67 errno = save_errno;
68 return FALSE;
69 }
70
71 /* File is open and message_subdir is set. Set the close-on-exec flag, and lock
72 the file. We lock only the first line of the file (containing the message ID)
73 because this apparently is needed for running Exim under Cygwin. If the entire
74 file is locked in one process, a sub-process cannot access it, even when passed
75 an open file descriptor (at least, I think that's the Cygwin story). On real
76 Unix systems it doesn't make any difference as long as Exim is consistent in
77 what it locks. */
78
79 fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
80 FD_CLOEXEC);
81
82 lock_data.l_type = F_WRLCK;
83 lock_data.l_whence = SEEK_SET;
84 lock_data.l_start = 0;
85 lock_data.l_len = SPOOL_DATA_START_OFFSET;
86
87 if (fcntl(deliver_datafile, F_SETLK, &lock_data) < 0)
88 {
89 log_write(L_skip_delivery,
90 LOG_MAIN,
91 "Spool file is locked (another process is handling this message)");
92 close(deliver_datafile);
93 deliver_datafile = -1;
94 errno = 0;
95 return FALSE;
96 }
97
98 /* Get the size of the data; don't include the leading filename line
99 in the count, but add one for the newline before the data. */
100
101 if (fstat(deliver_datafile, &statbuf) == 0)
102 {
103 message_body_size = statbuf.st_size - SPOOL_DATA_START_OFFSET;
104 message_size = message_body_size + 1;
105 }
106
107 return TRUE;
108 }
109 #endif /* COMPILE_UTILITY */
110
111
112
113 /*************************************************
114 * Read non-recipients tree from spool file *
115 *************************************************/
116
117 /* The tree of non-recipients is written to the spool file in a form that
118 makes it easy to read back into a tree. The format is as follows:
119
120 . Each node is preceded by two letter(Y/N) indicating whether it has left
121 or right children. There's one space after the two flags, before the name.
122
123 . The left subtree (if any) then follows, then the right subtree (if any).
124
125 This function is entered with the next input line in the buffer. Note we must
126 save the right flag before recursing with the same buffer.
127
128 Once the tree is read, we re-construct the balance fields by scanning the tree.
129 I forgot to write them out originally, and the compatible fix is to do it this
130 way. This initial local recursing function does the necessary.
131
132 Arguments:
133 node tree node
134
135 Returns: maximum depth below the node, including the node itself
136 */
137
138 static int
139 count_below(tree_node *node)
140 {
141 int nleft, nright;
142 if (node == NULL) return 0;
143 nleft = count_below(node->left);
144 nright = count_below(node->right);
145 node->balance = (nleft > nright)? 1 : ((nright > nleft)? 2 : 0);
146 return 1 + ((nleft > nright)? nleft : nright);
147 }
148
149 /* This is the real function...
150
151 Arguments:
152 connect pointer to the root of the tree
153 f FILE to read data from
154 buffer contains next input line; further lines read into it
155 buffer_size size of the buffer
156
157 Returns: FALSE on format error
158 */
159
160 static BOOL
161 read_nonrecipients_tree(tree_node **connect, FILE *f, uschar *buffer,
162 int buffer_size)
163 {
164 tree_node *node;
165 int n = Ustrlen(buffer);
166 BOOL right = buffer[1] == 'Y';
167
168 if (n < 5) return FALSE; /* malformed line */
169 buffer[n-1] = 0; /* Remove \n */
170 node = store_get(sizeof(tree_node) + n - 3);
171 *connect = node;
172 Ustrcpy(node->name, buffer + 3);
173 node->data.ptr = NULL;
174
175 if (buffer[0] == 'Y')
176 {
177 if (Ufgets(buffer, buffer_size, f) == NULL ||
178 !read_nonrecipients_tree(&node->left, f, buffer, buffer_size))
179 return FALSE;
180 }
181 else node->left = NULL;
182
183 if (right)
184 {
185 if (Ufgets(buffer, buffer_size, f) == NULL ||
186 !read_nonrecipients_tree(&node->right, f, buffer, buffer_size))
187 return FALSE;
188 }
189 else node->right = NULL;
190
191 (void) count_below(*connect);
192 return TRUE;
193 }
194
195
196
197
198 /*************************************************
199 * Read spool header file *
200 *************************************************/
201
202 /* This function reads a spool header file and places the data into the
203 appropriate global variables. The header portion is always read, but header
204 structures are built only if read_headers is set true. It isn't, for example,
205 while generating -bp output.
206
207 It may be possible for blocks of nulls (binary zeroes) to get written on the
208 end of a file if there is a system crash during writing. It was observed on an
209 earlier version of Exim that omitted to fsync() the files - this is thought to
210 have been the cause of that incident, but in any case, this code must be robust
211 against such an event, and if such a file is encountered, it must be treated as
212 malformed.
213
214 Arguments:
215 name name of the header file, including the -H
216 read_headers TRUE if in-store header structures are to be built
217 subdir_set TRUE is message_subdir is already set
218
219 Returns: spool_read_OK success
220 spool_read_notopen open failed
221 spool_read_enverror error in the envelope portion
222 spool_read_hdrdrror error in the header portion
223 */
224
225 int
226 spool_read_header(uschar *name, BOOL read_headers, BOOL subdir_set)
227 {
228 FILE *f = NULL;
229 int n;
230 int rcount = 0;
231 long int uid, gid;
232 BOOL inheader = FALSE;
233 uschar originator[64];
234
235 /* Reset all the global variables to their default values. However, there is
236 one exception. DO NOT change the default value of dont_deliver, because it may
237 be forced by an external setting. */
238
239 for (n = 0; n < ACL_C_MAX + ACL_M_MAX; n++) acl_var[n] = NULL;
240
241 authenticated_id = NULL;
242 authenticated_sender = NULL;
243 allow_unqualified_recipient = FALSE;
244 allow_unqualified_sender = FALSE;
245 body_linecount = 0;
246 body_zerocount = 0;
247 deliver_firsttime = FALSE;
248 deliver_freeze = FALSE;
249 deliver_frozen_at = 0;
250 deliver_manual_thaw = FALSE;
251 /* dont_deliver must NOT be reset */
252 header_list = header_last = NULL;
253 host_lookup_failed = FALSE;
254 interface_address = NULL;
255 interface_port = 0;
256 local_error_message = FALSE;
257 local_scan_data = NULL;
258 message_linecount = 0;
259 received_protocol = NULL;
260 received_count = 0;
261 recipients_list = NULL;
262 sender_address = NULL;
263 sender_fullhost = NULL;
264 sender_helo_name = NULL;
265 sender_host_address = NULL;
266 sender_host_name = NULL;
267 sender_host_port = 0;
268 sender_host_authenticated = NULL;
269 sender_ident = NULL;
270 sender_local = FALSE;
271 sender_set_untrusted = FALSE;
272 smtp_active_hostname = primary_hostname;
273 tree_nonrecipients = NULL;
274
275 #ifdef EXPERIMENTAL_BRIGHTMAIL
276 bmi_run = 0;
277 bmi_verdicts = NULL;
278 #endif
279
280 #ifdef SUPPORT_TLS
281 tls_certificate_verified = FALSE;
282 tls_cipher = NULL;
283 tls_peerdn = NULL;
284 #endif
285
286 #ifdef WITH_CONTENT_SCAN
287 spam_score_int = NULL;
288 #endif
289
290 /* Generate the full name and open the file. If message_subdir is already
291 set, just look in the given directory. Otherwise, look in both the split
292 and unsplit directories, as for the data file above. */
293
294 for (n = 0; n < 2; n++)
295 {
296 if (!subdir_set)
297 message_subdir[0] = (split_spool_directory == (n == 0))? name[5] : 0;
298 sprintf(CS big_buffer, "%s/input/%s/%s", spool_directory, message_subdir,
299 name);
300 f = Ufopen(big_buffer, "rb");
301 if (f != NULL) break;
302 if (n != 0 || subdir_set || errno != ENOENT) return spool_read_notopen;
303 }
304
305 errno = 0;
306
307 #ifndef COMPILE_UTILITY
308 DEBUG(D_deliver) debug_printf("reading spool file %s\n", name);
309 #endif /* COMPILE_UTILITY */
310
311 /* The first line of a spool file contains the message id followed by -H (i.e.
312 the file name), in order to make the file self-identifying. */
313
314 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
315 if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 ||
316 Ustrncmp(big_buffer, name, MESSAGE_ID_LENGTH + 2) != 0)
317 goto SPOOL_FORMAT_ERROR;
318
319 /* The next three lines in the header file are in a fixed format. The first
320 contains the login, uid, and gid of the user who caused the file to be written.
321 The second contains the mail address of the message's sender, enclosed in <>.
322 The third contains the time the message was received, and the number of warning
323 messages for delivery delays that have been sent. */
324
325 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
326
327 if (sscanf(CS big_buffer, "%s %ld %ld", originator, &uid, &gid) != 3)
328 goto SPOOL_FORMAT_ERROR;
329 originator_login = string_copy(originator);
330 originator_uid = (uid_t)uid;
331 originator_gid = (gid_t)gid;
332
333 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
334 n = Ustrlen(big_buffer);
335 if (n < 3 || big_buffer[0] != '<' || big_buffer[n-2] != '>')
336 goto SPOOL_FORMAT_ERROR;
337
338 sender_address = store_get(n-2);
339 Ustrncpy(sender_address, big_buffer+1, n-3);
340 sender_address[n-3] = 0;
341
342 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
343 if (sscanf(CS big_buffer, "%d %d", &received_time, &warning_count) != 2)
344 goto SPOOL_FORMAT_ERROR;
345
346 message_age = time(NULL) - received_time;
347
348 #ifndef COMPILE_UTILITY
349 DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n",
350 originator_login, (long int)originator_uid, (long int)originator_gid,
351 sender_address);
352 #endif /* COMPILE_UTILITY */
353
354 /* Now there may be a number of optional lines, each starting with "-".
355 If you add a new setting here, make sure you set the default above. */
356
357 for (;;)
358 {
359 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
360 if (big_buffer[0] != '-') break;
361
362 big_buffer[Ustrlen(big_buffer) - 1] = 0;
363 if (Ustrncmp(big_buffer, "-acl ", 5) == 0)
364 {
365 int index, count;
366 if (sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2)
367 goto SPOOL_FORMAT_ERROR;
368 /* Ignore if index too big - might be if a later release with more
369 variables built this spool file. */
370 if (index < ACL_C_MAX + ACL_M_MAX)
371 {
372 acl_var[index] = store_get(count + 1);
373 if (fread(acl_var[index], 1, count+1, f) < count) goto SPOOL_READ_ERROR;
374 acl_var[index][count] = 0;
375 }
376 }
377 else if (Ustrcmp(big_buffer, "-local") == 0) sender_local = TRUE;
378 else if (Ustrcmp(big_buffer, "-localerror") == 0)
379 local_error_message = TRUE;
380 else if (Ustrncmp(big_buffer, "-local_scan ", 12) == 0)
381 local_scan_data = string_copy(big_buffer + 12);
382 #ifdef WITH_CONTENT_SCAN
383 else if (Ustrncmp(big_buffer, "-spam_score_int ", 16) == 0)
384 spam_score_int = string_copy(big_buffer + 16);
385 #endif
386 #ifdef EXPERIMENTAL_BRIGHTMAIL
387 else if (Ustrncmp(big_buffer, "-bmi_verdicts ", 14) == 0)
388 bmi_verdicts = string_copy(big_buffer + 14);
389 #endif
390 else if (Ustrcmp(big_buffer, "-host_lookup_failed") == 0)
391 host_lookup_failed = TRUE;
392 else if (Ustrncmp(big_buffer, "-body_linecount", 15) == 0)
393 body_linecount = Uatoi(big_buffer + 15);
394 else if (Ustrncmp(big_buffer, "-body_zerocount", 15) == 0)
395 body_zerocount = Uatoi(big_buffer + 15);
396 else if (Ustrncmp(big_buffer, "-frozen", 7) == 0)
397 {
398 deliver_freeze = TRUE;
399 deliver_frozen_at = Uatoi(big_buffer + 7);
400 }
401 else if (Ustrcmp(big_buffer, "-allow_unqualified_recipient") == 0)
402 allow_unqualified_recipient = TRUE;
403 else if (Ustrcmp(big_buffer, "-allow_unqualified_sender") == 0)
404 allow_unqualified_sender = TRUE;
405 else if (Ustrcmp(big_buffer, "-deliver_firsttime") == 0)
406 deliver_firsttime = TRUE;
407 else if (Ustrcmp(big_buffer, "-manual_thaw") == 0)
408 deliver_manual_thaw = TRUE;
409 else if (Ustrncmp(big_buffer, "-auth_id", 8) == 0)
410 authenticated_id = string_copy(big_buffer + 9);
411 else if (Ustrncmp(big_buffer, "-auth_sender", 12) == 0)
412 authenticated_sender = string_copy(big_buffer + 13);
413 else if (Ustrncmp(big_buffer, "-sender_set_untrusted", 21) == 0)
414 sender_set_untrusted = TRUE;
415
416 #ifdef SUPPORT_TLS
417 else if (Ustrncmp(big_buffer, "-tls_certificate_verified", 25) == 0)
418 tls_certificate_verified = TRUE;
419 else if (Ustrncmp(big_buffer, "-tls_cipher", 11) == 0)
420 tls_cipher = string_copy(big_buffer + 12);
421 else if (Ustrncmp(big_buffer, "-tls_peerdn", 11) == 0)
422 tls_peerdn = string_copy(big_buffer + 12);
423 #endif
424
425 /* We now record the port number after the address, separated by a
426 dot. For compatibility during upgrading, do nothing if there
427 isn't a value (it gets left at zero). */
428
429 else if (Ustrncmp(big_buffer, "-host_address", 13) == 0)
430 {
431 sender_host_port = host_extract_port(big_buffer + 14);
432 sender_host_address = string_copy(big_buffer + 14);
433 }
434
435 else if (Ustrncmp(big_buffer, "-interface_address", 18) == 0)
436 {
437 interface_port = host_extract_port(big_buffer + 19);
438 interface_address = string_copy(big_buffer + 19);
439 }
440
441 else if (Ustrncmp(big_buffer, "-active_hostname", 16) == 0)
442 smtp_active_hostname = string_copy(big_buffer + 17);
443 else if (Ustrncmp(big_buffer, "-host_auth", 10) == 0)
444 sender_host_authenticated = string_copy(big_buffer + 11);
445 else if (Ustrncmp(big_buffer, "-host_name", 10) == 0)
446 sender_host_name = string_copy(big_buffer + 11);
447 else if (Ustrncmp(big_buffer, "-helo_name", 10) == 0)
448 sender_helo_name = string_copy(big_buffer + 11);
449 else if (Ustrncmp(big_buffer, "-ident", 6) == 0)
450 sender_ident = string_copy(big_buffer + 7);
451 else if (Ustrncmp(big_buffer, "-received_protocol", 18) == 0)
452 received_protocol = string_copy(big_buffer + 19);
453 else if (Ustrncmp(big_buffer, "-N", 2) == 0)
454 dont_deliver = TRUE;
455
456 /* To allow new versions of Exim that add additional flags to interwork
457 with older versions that do not understand them, just ignore any flagged
458 lines that we don't recognize. Otherwise it wouldn't be possible to back
459 off a new version that left new-style flags written on the spool. That's
460 why the following line is commented out. */
461
462 /* else goto SPOOL_FORMAT_ERROR; */
463 }
464
465 /* Build sender_fullhost if required */
466
467 #ifndef COMPILE_UTILITY
468 host_build_sender_fullhost();
469 #endif /* COMPILE_UTILITY */
470
471 #ifndef COMPILE_UTILITY
472 DEBUG(D_deliver)
473 debug_printf("sender_local=%d ident=%s\n", sender_local,
474 (sender_ident == NULL)? US"unset" : sender_ident);
475 #endif /* COMPILE_UTILITY */
476
477 /* We now have the tree of addresses NOT to deliver to, or a line
478 containing "XX", indicating no tree. */
479
480 if (Ustrncmp(big_buffer, "XX\n", 3) != 0 &&
481 !read_nonrecipients_tree(&tree_nonrecipients, f, big_buffer, big_buffer_size))
482 goto SPOOL_FORMAT_ERROR;
483
484 #ifndef COMPILE_UTILITY
485 DEBUG(D_deliver)
486 {
487 debug_printf("Non-recipients:\n");
488 debug_print_tree(tree_nonrecipients);
489 }
490 #endif /* COMPILE_UTILITY */
491
492 /* After reading the tree, the next line has not yet been read into the
493 buffer. It contains the count of recipients which follow on separate lines. */
494
495 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
496 if (sscanf(CS big_buffer, "%d", &rcount) != 1) goto SPOOL_FORMAT_ERROR;
497
498 #ifndef COMPILE_UTILITY
499 DEBUG(D_deliver) debug_printf("recipients_count=%d\n", rcount);
500 #endif /* COMPILE_UTILITY */
501
502 recipients_list_max = rcount;
503 recipients_list = store_get(rcount * sizeof(recipient_item));
504
505 for (recipients_count = 0; recipients_count < rcount; recipients_count++)
506 {
507 int nn;
508 int pno = -1;
509 uschar *errors_to = NULL;
510 uschar *p;
511
512 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
513 nn = Ustrlen(big_buffer);
514 if (nn < 2) goto SPOOL_FORMAT_ERROR;
515
516 /* Remove the newline; this terminates the address if there is no additional
517 data on the line. */
518
519 p = big_buffer + nn - 1;
520 *p-- = 0;
521
522 /* Look back from the end of the line for digits and special terminators.
523 Since an address must end with a domain, we can tell that extra data is
524 present by the presence of the terminator, which is always some character
525 that cannot exist in a domain. (If I'd thought of the need for additional
526 data early on, I'd have put it at the start, with the address at the end. As
527 it is, we have to operate backwards. Addresses are permitted to contain
528 spaces, you see.)
529
530 This code has to cope with various versions of this data that have evolved
531 over time. In all cases, the line might just contain an address, with no
532 additional data. Otherwise, the possibilities are as follows:
533
534 Exim 3 type: <address><space><digits>,<digits>,<digits>
535
536 The second set of digits is the parent number for one_time addresses. The
537 other values were remnants of earlier experiments that were abandoned.
538
539 Exim 4 first type: <address><space><digits>
540
541 The digits are the parent number for one_time addresses.
542
543 Exim 4 new type: <address><space><data>#<type bits>
544
545 The type bits indicate what the contents of the data are.
546
547 Bit 01 indicates that, reading from right to left, the data
548 ends with <errors_to address><space><len>,<pno> where pno is
549 the parent number for one_time addresses, and len is the length
550 of the errors_to address (zero meaning none).
551 */
552
553 while (isdigit(*p)) p--;
554
555 /* Handle Exim 3 spool files */
556
557 if (*p == ',')
558 {
559 int dummy;
560 while (isdigit(*(--p)) || *p == ',');
561 if (*p == ' ')
562 {
563 *p++ = 0;
564 sscanf(CS p, "%d,%d", &dummy, &pno);
565 }
566 }
567
568 /* Handle early Exim 4 spool files */
569
570 else if (*p == ' ')
571 {
572 *p++ = 0;
573 sscanf(CS p, "%d", &pno);
574 }
575
576 /* Handle current format Exim 4 spool files */
577
578 else if (*p == '#')
579 {
580 int flags;
581 sscanf(CS p+1, "%d", &flags);
582
583 if ((flags & 0x01) != 0) /* one_time data exists */
584 {
585 int len;
586 while (isdigit(*(--p)) || *p == ',' || *p == '-');
587 sscanf(CS p+1, "%d,%d", &len, &pno);
588 *p = 0;
589 if (len > 0)
590 {
591 p -= len;
592 errors_to = string_copy(p);
593 }
594 }
595
596 *(--p) = 0; /* Terminate address */
597 }
598
599 recipients_list[recipients_count].address = string_copy(big_buffer);
600 recipients_list[recipients_count].pno = pno;
601 recipients_list[recipients_count].errors_to = errors_to;
602 }
603
604 /* The remainder of the spool header file contains the headers for the message,
605 separated off from the previous data by a blank line. Each header is preceded
606 by a count of its length and either a certain letter (for various identified
607 headers), space (for a miscellaneous live header) or an asterisk (for a header
608 that has been rewritten). Count the Received: headers. We read the headers
609 always, in order to check on the format of the file, but only create a header
610 list if requested to do so. */
611
612 inheader = TRUE;
613 if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR;
614 if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
615
616 while ((n = fgetc(f)) != EOF)
617 {
618 header_line *h;
619 uschar flag[4];
620 int i;
621
622 if (!isdigit(n)) goto SPOOL_FORMAT_ERROR;
623 ungetc(n, f);
624 fscanf(f, "%d%c ", &n, flag);
625 if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */
626
627 if (read_headers)
628 {
629 h = store_get(sizeof(header_line));
630 h->next = NULL;
631 h->type = flag[0];
632 h->slen = n;
633 h->text = store_get(n+1);
634
635 if (h->type == htype_received) received_count++;
636
637 if (header_list == NULL) header_list = h;
638 else header_last->next = h;
639 header_last = h;
640
641 for (i = 0; i < n; i++)
642 {
643 int c = fgetc(f);
644 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
645 if (c == '\n' && h->type != htype_old) message_linecount++;
646 h->text[i] = c;
647 }
648 h->text[i] = 0;
649 }
650
651 /* Not requiring header data, just skip through the bytes */
652
653 else for (i = 0; i < n; i++)
654 {
655 int c = fgetc(f);
656 if (c == 0 || c == EOF) goto SPOOL_FORMAT_ERROR;
657 }
658 }
659
660 /* We have successfully read the data in the header file. Update the message
661 line count by adding the body linecount to the header linecount. Close the file
662 and give a positive response. */
663
664 #ifndef COMPILE_UTILITY
665 DEBUG(D_deliver) debug_printf("body_linecount=%d message_linecount=%d\n",
666 body_linecount, message_linecount);
667 #endif /* COMPILE_UTILITY */
668
669 message_linecount += body_linecount;
670
671 fclose(f);
672 return spool_read_OK;
673
674
675 /* There was an error reading the spool or there was missing data,
676 or there was a format error. A "read error" with no errno means an
677 unexpected EOF, which we treat as a format error. */
678
679 SPOOL_READ_ERROR:
680 if (errno != 0)
681 {
682 n = errno;
683
684 #ifndef COMPILE_UTILITY
685 DEBUG(D_any) debug_printf("Error while reading spool file %s\n", name);
686 #endif /* COMPILE_UTILITY */
687
688 fclose(f);
689 errno = n;
690 return inheader? spool_read_hdrerror : spool_read_enverror;
691 }
692
693 SPOOL_FORMAT_ERROR:
694
695 #ifndef COMPILE_UTILITY
696 DEBUG(D_any) debug_printf("Format error in spool file %s\n", name);
697 #endif /* COMPILE_UTILITY */
698
699 fclose(f);
700 errno = ERRNO_SPOOLFORMAT;
701 return inheader? spool_read_hdrerror : spool_read_enverror;
702 }
703
704 /* End of spool_in.c */