1 /* $Cambridge: exim/src/src/transports/autoreply.c,v 1.10 2007/01/08 10:50:20 ph10 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2007 */
8 /* See the file NOTICE for conditions of use and distribution. */
12 #include "autoreply.h"
16 /* Options specific to the autoreply transport. They must be in alphabetic
17 order (note that "_" comes before the lower case letters). Those starting
18 with "*" are not settable by the user but are used by the option-reading
19 software for alternative value types. Some options are publicly visible and so
20 are stored in the driver instance block. These are flagged with opt_public. */
22 optionlist autoreply_transport_options[] = {
23 { "bcc", opt_stringptr,
24 (void *)offsetof(autoreply_transport_options_block, bcc) },
25 { "cc", opt_stringptr,
26 (void *)offsetof(autoreply_transport_options_block, cc) },
27 { "file", opt_stringptr,
28 (void *)offsetof(autoreply_transport_options_block, file) },
29 { "file_expand", opt_bool,
30 (void *)offsetof(autoreply_transport_options_block, file_expand) },
31 { "file_optional", opt_bool,
32 (void *)offsetof(autoreply_transport_options_block, file_optional) },
33 { "from", opt_stringptr,
34 (void *)offsetof(autoreply_transport_options_block, from) },
35 { "headers", opt_stringptr,
36 (void *)offsetof(autoreply_transport_options_block, headers) },
37 { "log", opt_stringptr,
38 (void *)offsetof(autoreply_transport_options_block, logfile) },
40 (void *)offsetof(autoreply_transport_options_block, mode) },
41 { "never_mail", opt_stringptr,
42 (void *)offsetof(autoreply_transport_options_block, never_mail) },
43 { "once", opt_stringptr,
44 (void *)offsetof(autoreply_transport_options_block, oncelog) },
45 { "once_file_size", opt_int,
46 (void *)offsetof(autoreply_transport_options_block, once_file_size) },
47 { "once_repeat", opt_stringptr,
48 (void *)offsetof(autoreply_transport_options_block, once_repeat) },
49 { "reply_to", opt_stringptr,
50 (void *)offsetof(autoreply_transport_options_block, reply_to) },
51 { "return_message", opt_bool,
52 (void *)offsetof(autoreply_transport_options_block, return_message) },
53 { "subject", opt_stringptr,
54 (void *)offsetof(autoreply_transport_options_block, subject) },
55 { "text", opt_stringptr,
56 (void *)offsetof(autoreply_transport_options_block, text) },
57 { "to", opt_stringptr,
58 (void *)offsetof(autoreply_transport_options_block, to) },
61 /* Size of the options list. An extern variable has to be used so that its
62 address can appear in the tables drtables.c. */
64 int autoreply_transport_options_count =
65 sizeof(autoreply_transport_options)/sizeof(optionlist);
67 /* Default private options block for the autoreply transport. */
69 autoreply_transport_options_block autoreply_transport_option_defaults = {
81 NULL, /* once_repeat */
82 NULL, /* never_mail */
84 0, /* once_file_size */
85 FALSE, /* file_expand */
86 FALSE, /* file_optional */
87 FALSE /* return message */
92 /* Type of text for the checkexpand() function */
94 enum { cke_text, cke_hdr, cke_file };
98 /*************************************************
99 * Initialization entry point *
100 *************************************************/
102 /* Called for each instance, after its options have been read, to
103 enable consistency checks to be done, or anything else that needs
107 autoreply_transport_init(transport_instance *tblock)
110 autoreply_transport_options_block *ob =
111 (autoreply_transport_options_block *)(tblock->options_block);
114 /* If a fixed uid field is set, then a gid field must also be set. */
116 if (tblock->uid_set && !tblock->gid_set && tblock->expand_gid == NULL)
117 log_write(0, LOG_PANIC_DIE|LOG_CONFIG,
118 "user set without group for the %s transport", tblock->name);
124 /*************************************************
125 * Expand string and check *
126 *************************************************/
128 /* If the expansion fails, the error is set up in the address. Expanded
129 strings must be checked to ensure they contain only printing characters
130 and white space. If not, the function fails.
134 addr address that is being worked on
135 name transport name, for error text
136 type type, for checking content:
138 cke_hdr => header, allow \n + whitespace
139 cke_file => file name, no non-printers allowed
141 Returns: expanded string if expansion succeeds;
146 checkexpand(uschar *s, address_item *addr, uschar *name, int type)
149 uschar *ss = expand_string(s);
153 addr->transport_return = FAIL;
154 addr->message = string_sprintf("Expansion of \"%s\" failed in %s transport: "
155 "%s", s, name, expand_string_message);
159 if (type != cke_text) for (t = ss; *t != 0; t++)
162 if (mac_isprint(c)) continue;
163 if (type == cke_hdr && c == '\n' && (t[1] == ' ' || t[1] == '\t')) continue;
164 s = string_printing(s);
165 addr->transport_return = FAIL;
166 addr->message = string_sprintf("Expansion of \"%s\" in %s transport "
167 "contains non-printing character %d", s, name, c);
177 /*************************************************
178 * Check a header line for never_mail *
179 *************************************************/
181 /* This is called to check to, cc, and bcc for addresses in the never_mail
182 list. Any that are found are removed.
185 listptr points to the list of addresses
186 never_mail an address list, already expanded
192 check_never_mail(uschar **listptr, uschar *never_mail)
194 uschar *s = *listptr;
198 uschar *error, *next;
199 uschar *e = parse_find_address_end(s, FALSE);
201 int start, end, domain, rc;
203 /* Temporarily terminate the string at the address end while extracting
204 the operative address within. */
207 next = parse_extract_address(s, &error, &start, &end, &domain, FALSE);
210 /* If there is some kind of syntax error, just give up on this header
213 if (next == NULL) break;
215 /* See if the address is on the never_mail list */
217 rc = match_address_list(next, /* address to check */
218 TRUE, /* start caseless */
219 FALSE, /* don't expand the list */
220 &never_mail, /* the list */
221 NULL, /* no caching */
222 -1, /* no expand setup */
223 0, /* separator from list */
224 NULL); /* no lookup value return */
226 if (rc == OK) /* Remove this address */
229 debug_printf("discarding recipient %s (matched never_mail)\n", next);
230 if (terminator == ',') e++;
231 memmove(s, e, Ustrlen(e) + 1);
233 else /* Skip over this address */
236 if (terminator == ',') s++;
240 /* Check to see if we removed the last address, leaving a terminating comma
241 that needs to be removed */
243 s = *listptr + Ustrlen(*listptr);
244 while (s > *listptr && (isspace(s[-1]) || s[-1] == ',')) s--;
247 /* Check to see if there any addresses left; if not, set NULL */
250 while (s != 0 && isspace(*s)) s++;
251 if (*s == 0) *listptr = NULL;
256 /*************************************************
258 *************************************************/
260 /* See local README for interface details. This transport always returns
261 FALSE, indicating that the top address has the status for all - though in fact
262 this transport can handle only one address at at time anyway. */
265 autoreply_transport_entry(
266 transport_instance *tblock, /* data for this instantiation */
267 address_item *addr) /* address we are working on */
274 EXIM_DB *dbm_file = NULL;
275 BOOL file_expand, return_message;
276 uschar *from, *reply_to, *to, *cc, *bcc, *subject, *headers, *text, *file;
277 uschar *logfile, *oncelog;
278 uschar *cache_buff = NULL;
279 uschar *cache_time = NULL;
280 uschar *message_id = NULL;
282 time_t now = time(NULL);
283 time_t once_repeat_sec = 0;
287 autoreply_transport_options_block *ob =
288 (autoreply_transport_options_block *)(tblock->options_block);
290 DEBUG(D_transport) debug_printf("%s transport entered\n", tblock->name);
292 /* Set up for the good case */
294 addr->transport_return = OK;
295 addr->basic_errno = 0;
297 /* If the address is pointing to a reply block, then take all the data
298 from that block. It has typically been set up by a mail filter processing
299 router. Otherwise, the data must be supplied by this transport, and
300 it has to be expanded here. */
302 if (addr->reply != NULL)
304 DEBUG(D_transport) debug_printf("taking data from address\n");
305 from = addr->reply->from;
306 reply_to = addr->reply->reply_to;
307 to = addr->reply->to;
308 cc = addr->reply->cc;
309 bcc = addr->reply->bcc;
310 subject = addr->reply->subject;
311 headers = addr->reply->headers;
312 text = addr->reply->text;
313 file = addr->reply->file;
314 logfile = addr->reply->logfile;
315 oncelog = addr->reply->oncelog;
316 once_repeat_sec = addr->reply->once_repeat;
317 file_expand = addr->reply->file_expand;
318 expand_forbid = addr->reply->expand_forbid;
319 return_message = addr->reply->return_message;
323 uschar *oncerepeat = ob->once_repeat;
325 DEBUG(D_transport) debug_printf("taking data from transport\n");
327 reply_to = ob->reply_to;
331 subject = ob->subject;
332 headers = ob->headers;
335 logfile = ob->logfile;
336 oncelog = ob->oncelog;
337 file_expand = ob->file_expand;
338 return_message = ob->return_message;
341 (from = checkexpand(from, addr, tblock->name, cke_hdr)) == NULL) ||
343 (reply_to = checkexpand(reply_to, addr, tblock->name, cke_hdr)) == NULL) ||
345 (to = checkexpand(to, addr, tblock->name, cke_hdr)) == NULL) ||
347 (cc = checkexpand(cc, addr, tblock->name, cke_hdr)) == NULL) ||
349 (bcc = checkexpand(bcc, addr, tblock->name, cke_hdr)) == NULL) ||
351 (subject = checkexpand(subject, addr, tblock->name, cke_hdr)) == NULL) ||
353 (headers = checkexpand(headers, addr, tblock->name, cke_text)) == NULL) ||
355 (text = checkexpand(text, addr, tblock->name, cke_text)) == NULL) ||
357 (file = checkexpand(file, addr, tblock->name, cke_file)) == NULL) ||
359 (logfile = checkexpand(logfile, addr, tblock->name, cke_file)) == NULL) ||
361 (oncelog = checkexpand(oncelog, addr, tblock->name, cke_file)) == NULL) ||
362 (oncerepeat != NULL &&
363 (oncerepeat = checkexpand(oncerepeat, addr, tblock->name, cke_file)) == NULL))
366 if (oncerepeat != NULL)
368 once_repeat_sec = readconf_readtime(oncerepeat, 0, FALSE);
369 if (once_repeat_sec < 0)
371 addr->transport_return = FAIL;
372 addr->message = string_sprintf("Invalid time value \"%s\" for "
373 "\"once_repeat\" in %s transport", oncerepeat, tblock->name);
379 /* If the never_mail option is set, we have to scan all the recipients and
380 remove those that match. */
382 if (ob->never_mail != NULL)
384 uschar *never_mail = expand_string(ob->never_mail);
386 if (never_mail == NULL)
388 addr->transport_return = FAIL;
389 addr->message = string_sprintf("Failed to expand \"%s\" for "
390 "\"never_mail\" in %s transport", ob->never_mail, tblock->name);
394 if (to != NULL) check_never_mail(&to, never_mail);
395 if (cc != NULL) check_never_mail(&cc, never_mail);
396 if (bcc != NULL) check_never_mail(&bcc, never_mail);
398 if (to == NULL && cc == NULL && bcc == NULL)
401 debug_printf("*** all recipients removed by never_mail\n");
406 /* If the -N option is set, can't do any more. */
411 debug_printf("*** delivery by %s transport bypassed by -N option\n",
417 /* If the oncelog field is set, we send want to send only one message to the
418 given recipient(s). This works only on the "To" field. If there is no "To"
419 field, the message is always sent. If the To: field contains more than one
420 recipient, the effect might not be quite as envisaged. If once_file_size is
421 set, instead of a dbm file, we use a regular file containing a circular buffer
424 if (oncelog != NULL && *oncelog != 0 && to != NULL)
428 /* Handle fixed-size cache file. */
430 if (ob->once_file_size > 0)
434 cache_fd = Uopen(oncelog, O_CREAT|O_RDWR, ob->mode);
436 if (cache_fd < 0 || fstat(cache_fd, &statbuf) != 0)
438 addr->transport_return = DEFER;
439 addr->message = string_sprintf("Failed to %s \"once\" file %s when "
440 "sending message from %s transport: %s",
441 (cache_fd < 0)? "open" : "stat", oncelog, tblock->name,
446 /* Get store in the temporary pool and read the entire file into it. We get
447 an amount of store that is big enough to add the new entry on the end if we
450 cache_size = statbuf.st_size;
451 add_size = sizeof(time_t) + Ustrlen(to) + 1;
452 cache_buff = store_get(cache_size + add_size);
454 if (read(cache_fd, cache_buff, cache_size) != cache_size)
456 addr->transport_return = DEFER;
457 addr->basic_errno = errno;
458 addr->message = US"error while reading \"once\" file";
462 DEBUG(D_transport) debug_printf("%d bytes read from %s\n", cache_size, oncelog);
464 /* Scan the data for this recipient. Each entry in the file starts with
465 a time_t sized time value, followed by the address, followed by a binary
466 zero. If we find a match, put the time into "then", and the place where it
467 was found into "cache_time". Otherwise, "then" is left at zero. */
470 while (p < cache_buff + cache_size)
472 uschar *s = p + sizeof(time_t);
473 uschar *nextp = s + Ustrlen(s) + 1;
474 if (Ustrcmp(to, s) == 0)
476 memcpy(&then, p, sizeof(time_t));
484 /* Use a DBM file for the list of previous recipients. */
488 EXIM_DATUM key_datum, result_datum;
489 EXIM_DBOPEN(oncelog, O_RDWR|O_CREAT, ob->mode, &dbm_file);
490 if (dbm_file == NULL)
492 addr->transport_return = DEFER;
493 addr->message = string_sprintf("Failed to open %s file %s when sending "
494 "message from %s transport: %s", EXIM_DBTYPE, oncelog, tblock->name,
499 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries need datums */
500 EXIM_DATUM_INIT(result_datum); /* to be cleared */
501 EXIM_DATUM_DATA(key_datum) = CS to;
502 EXIM_DATUM_SIZE(key_datum) = Ustrlen(to) + 1;
504 if (EXIM_DBGET(dbm_file, key_datum, result_datum))
506 /* If the datum size is that of a binary time, we are in the new world
507 where messages are sent periodically. Otherwise the file is an old one,
508 where the datum was filled with a tod_log time, which is assumed to be
509 different in size. For that, only one message is ever sent. This change
510 introduced at Exim 3.00. In a couple of years' time the test on the size
513 if (EXIM_DATUM_SIZE(result_datum) == sizeof(time_t))
515 memcpy(&then, EXIM_DATUM_DATA(result_datum), sizeof(time_t));
521 /* Either "then" is set zero, if no message has yet been sent, or it
522 is set to the time of the last sending. */
524 if (then != 0 && (once_repeat_sec <= 0 || now - then < once_repeat_sec))
526 DEBUG(D_transport) debug_printf("message previously sent to %s%s\n", to,
527 (once_repeat_sec > 0)? " and repeat time not reached" : "");
528 log_fd = Uopen(logfile, O_WRONLY|O_APPEND|O_CREAT, ob->mode);
531 uschar *ptr = log_buffer;
532 sprintf(CS ptr, "%s\n previously sent to %.200s\n", tod_stamp(tod_log), to);
534 (void)write(log_fd, log_buffer, ptr - log_buffer);
540 DEBUG(D_transport) debug_printf("%s %s\n", (then <= 0)?
541 "no previous message sent to" : "repeat time reached for", to);
544 /* We are going to send a message. Ensure any requested file is available. */
548 ff = Ufopen(file, "rb");
549 if (ff == NULL && !ob->file_optional)
551 addr->transport_return = DEFER;
552 addr->message = string_sprintf("Failed to open file %s when sending "
553 "message from %s transport: %s", file, tblock->name, strerror(errno));
558 /* Make a subprocess to send the message */
560 pid = child_open_exim(&fd);
562 /* Creation of child failed; defer this delivery. */
566 addr->transport_return = DEFER;
567 addr->message = string_sprintf("Failed to create child process to send "
568 "message from %s transport: %s", tblock->name, strerror(errno));
569 DEBUG(D_transport) debug_printf("%s\n", addr->message);
573 /* Create the message to be sent - recipients are taken from the headers,
574 as the -t option is used. The "headers" stuff *must* be last in case there
575 are newlines in it which might, if placed earlier, screw up other headers. */
577 f = fdopen(fd, "wb");
579 if (from != NULL) fprintf(f, "From: %s\n", from);
580 if (reply_to != NULL) fprintf(f, "Reply-To: %s\n", reply_to);
581 if (to != NULL) fprintf(f, "To: %s\n", to);
582 if (cc != NULL) fprintf(f, "Cc: %s\n", cc);
583 if (bcc != NULL) fprintf(f, "Bcc: %s\n", bcc);
584 if (subject != NULL) fprintf(f, "Subject: %s\n", subject);
586 /* Generate In-Reply-To from the message_id header; there should
587 always be one, but code defensively. */
589 for (h = header_list; h != NULL; h = h->next)
590 if (h->type == htype_id) break;
594 message_id = Ustrchr(h->text, ':') + 1;
595 while (isspace(*message_id)) message_id++;
596 fprintf(f, "In-Reply-To: %s", message_id);
599 /* Generate a References header if there is at least one of Message-ID:,
600 References:, or In-Reply-To: (see RFC 2822). */
602 for (h = header_list; h != NULL; h = h->next)
603 if (h->type != htype_old && strncmpic(US"References:", h->text, 11) == 0)
607 for (h = header_list; h != NULL; h = h->next)
608 if (h->type != htype_old && strncmpic(US"In-Reply-To:", h->text, 12) == 0)
611 /* We limit the total length of references. Although there is no fixed
612 limit, some systems do not like headers growing beyond recognition.
613 Keep the first message ID for the thread root and the last few for
614 the position inside the thread, up to a maximum of 12 altogether. */
616 if (h != NULL || message_id != NULL)
618 fprintf(f, "References:");
621 uschar *s, *id, *error;
622 uschar *referenced_ids[12];
623 int reference_count = 0;
626 s = Ustrchr(h->text, ':') + 1;
627 parse_allow_group = FALSE;
628 while (*s != 0 && (s = parse_message_id(s, &id, &error)) != NULL)
630 if (reference_count == sizeof(referenced_ids)/sizeof(uschar *))
632 memmove(referenced_ids + 1, referenced_ids + 2,
633 sizeof(referenced_ids) - 2*sizeof(uschar *));
634 referenced_ids[reference_count - 1] = id;
636 else referenced_ids[reference_count++] = id;
638 for (i = 0; i < reference_count; ++i) fprintf(f, " %s", referenced_ids[i]);
641 /* The message id will have a newline on the end of it. */
643 if (message_id != NULL) fprintf(f, " %s", message_id);
644 else fprintf(f, "\n");
647 /* Add an Auto-Submitted: header */
649 fprintf(f, "Auto-Submitted: auto-replied\n");
651 /* Add any specially requested headers */
653 if (headers != NULL) fprintf(f, "%s\n", headers);
658 fprintf(f, "%s", CS text);
659 if (text[Ustrlen(text)-1] != '\n') fprintf(f, "\n");
664 while (Ufgets(big_buffer, big_buffer_size, ff) != NULL)
668 uschar *s = expand_string(big_buffer);
672 debug_printf("error while expanding line from file:\n %s\n %s\n",
673 big_buffer, expand_string_message);
675 fprintf(f, "%s", (s == NULL)? CS big_buffer : CS s);
677 else fprintf(f, "%s", CS big_buffer);
681 /* Copy the original message if required, observing the return size
682 limit if we are returning the body. */
686 uschar *rubric = (tblock->headers_only)?
687 US"------ This is a copy of the message's header lines.\n"
688 : (tblock->body_only)?
689 US"------ This is a copy of the body of the message, without the headers.\n"
691 US"------ This is a copy of the message, including all the headers.\n";
693 if (bounce_return_size_limit > 0 && !tblock->headers_only)
696 int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) *
697 DELIVER_IN_BUFFER_SIZE;
698 if (fstat(deliver_datafile, &statbuf) == 0 && statbuf.st_size > max)
701 "------ The body of the message is " OFF_T_FMT " characters long; only the first\n"
702 "------ %d or so are included here.\n\n", rubric, statbuf.st_size,
705 else fprintf(f, "\n%s\n", rubric);
707 else fprintf(f, "\n%s\n", rubric);
711 transport_write_message(addr, fileno(f),
712 (tblock->body_only? topt_no_headers : 0) |
713 (tblock->headers_only? topt_no_body : 0) |
714 (tblock->return_path_add? topt_add_return_path : 0) |
715 (tblock->delivery_date_add? topt_add_delivery_date : 0) |
716 (tblock->envelope_to_add? topt_add_envelope_to : 0),
717 bounce_return_size_limit, tblock->add_headers, tblock->remove_headers,
718 NULL, NULL, tblock->rewrite_rules, tblock->rewrite_existflags);
721 /* End the message and wait for the child process to end; no timeout. */
724 rc = child_close(pid, 0);
726 /* Update the "sent to" log whatever the yield. This errs on the side of
727 missing out a message rather than risking sending more than one. We either have
728 cache_fd set to a fixed size, circular buffer file, or dbm_file set to an open
729 DBM file (or neither, if "once" is not set). */
731 /* Update fixed-size cache file. If cache_time is set, we found a previous
732 entry; that is the spot into which to put the current time. Otherwise we have
733 to add a new record; remove the first one in the file if the file is too big.
734 We always rewrite the entire file in a single write operation. This is
735 (hopefully) going to be the safest thing because there is no interlocking
736 between multiple simultaneous deliveries. */
740 uschar *from = cache_buff;
741 int size = cache_size;
742 (void)lseek(cache_fd, 0, SEEK_SET);
744 if (cache_time == NULL)
746 cache_time = from + size;
747 memcpy(cache_time + sizeof(time_t), to, add_size - sizeof(time_t));
750 if (cache_size > 0 && size > ob->once_file_size)
752 from += sizeof(time_t) + Ustrlen(from + sizeof(time_t)) + 1;
753 size -= (from - cache_buff);
757 memcpy(cache_time, &now, sizeof(time_t));
758 (void)write(cache_fd, from, size);
761 /* Update DBM file */
763 else if (dbm_file != NULL)
765 EXIM_DATUM key_datum, value_datum;
766 EXIM_DATUM_INIT(key_datum); /* Some DBM libraries need to have */
767 EXIM_DATUM_INIT(value_datum); /* cleared datums. */
768 EXIM_DATUM_DATA(key_datum) = CS to;
769 EXIM_DATUM_SIZE(key_datum) = Ustrlen(to) + 1;
771 /* Many OS define the datum value, sensibly, as a void *. However, there
772 are some which still have char *. By casting this address to a char * we
773 can avoid warning messages from the char * systems. */
775 EXIM_DATUM_DATA(value_datum) = CS (&now);
776 EXIM_DATUM_SIZE(value_datum) = (int)sizeof(time_t);
777 EXIM_DBPUT(dbm_file, key_datum, value_datum);
780 /* If sending failed, defer to try again - but if once is set the next
781 try will skip, of course. However, if there were no recipients in the
782 message, we do not fail. */
786 if (rc == EXIT_NORECIPIENTS)
788 DEBUG(D_any) debug_printf("%s transport: message contained no recipients\n",
793 addr->transport_return = DEFER;
794 addr->message = string_sprintf("Failed to send message from %s "
795 "transport (%d)", tblock->name, rc);
800 /* Log the sending of the message if successful and required. If the file
801 fails to open, it's hard to know what to do. We cannot write to the Exim
802 log from here, since we may be running under an unprivileged uid. We don't
803 want to fail the delivery, since the message has been successfully sent. For
804 the moment, ignore open failures. Write the log entry as a single write() to a
805 file opened for appending, in order to avoid interleaving of output from
806 different processes. The log_buffer can be used exactly as for main log
811 int log_fd = Uopen(logfile, O_WRONLY|O_APPEND|O_CREAT, ob->mode);
814 uschar *ptr = log_buffer;
815 DEBUG(D_transport) debug_printf("logging message details\n");
816 sprintf(CS ptr, "%s\n", tod_stamp(tod_log));
820 (void)string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
821 " From: %s\n", from);
826 (void)string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
832 (void)string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
838 (void)string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
844 (void)string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
845 " Subject: %s\n", subject);
850 (void)string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
854 (void)write(log_fd, log_buffer, ptr - log_buffer);
857 else DEBUG(D_transport) debug_printf("Failed to open log file %s for %s "
858 "transport: %s\n", logfile, tblock->name, strerror(errno));
862 if (dbm_file != NULL) EXIM_DBCLOSE(dbm_file);
863 if (cache_fd > 0) (void)close(cache_fd);
865 DEBUG(D_transport) debug_printf("%s transport succeeded\n", tblock->name);
870 /* End of transport/autoreply.c */