Commit | Line | Data |
---|---|---|
059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
f9ba5e22 | 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
059ec3d9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | /* Functions for writing spool files, and moving them about. */ | |
9 | ||
10 | ||
11 | #include "exim.h" | |
12 | ||
13 | ||
14 | ||
15 | /************************************************* | |
16 | * Deal with header writing errors * | |
17 | *************************************************/ | |
18 | ||
19 | /* This function is called immediately after errors in writing the spool, with | |
f5d25c2b | 20 | errno still set. It creates an error message, depending on the circumstances. |
059ec3d9 PH |
21 | If errmsg is NULL, it logs the message and panic-dies. Otherwise errmsg is set |
22 | to point to the message, and -1 is returned. This function makes the code of | |
23 | spool_write_header() a bit neater. | |
24 | ||
25 | Arguments: | |
26 | where SW_RECEIVING, SW_DELIVERING, or SW_MODIFYING | |
27 | errmsg where to put the message; NULL => panic-die | |
28 | s text to add to log string | |
29 | temp_name name of temp file to unlink | |
30 | f FILE to close, if not NULL | |
31 | ||
32 | Returns: -1 if errmsg is not NULL; otherwise doesn't return | |
33 | */ | |
34 | ||
35 | static int | |
36 | spool_write_error(int where, uschar **errmsg, uschar *s, uschar *temp_name, | |
37 | FILE *f) | |
38 | { | |
f5d25c2b JH |
39 | uschar *msg = where == SW_RECEIVING |
40 | ? string_sprintf("spool file %s error while receiving from %s: %s", s, | |
41 | sender_fullhost ? sender_fullhost : sender_ident, | |
42 | strerror(errno)) | |
43 | : string_sprintf("spool file %s error while %s: %s", s, | |
44 | where == SW_DELIVERING ? "delivering" : "modifying", | |
45 | strerror(errno)); | |
46 | ||
47 | if (temp_name) Uunlink(temp_name); | |
48 | if (f) (void)fclose(f); | |
49 | ||
50 | if (errmsg) | |
059ec3d9 | 51 | *errmsg = msg; |
f5d25c2b JH |
52 | else |
53 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", msg); | |
059ec3d9 PH |
54 | |
55 | return -1; | |
56 | } | |
57 | ||
58 | ||
59 | ||
60 | /************************************************* | |
61 | * Open file under temporary name * | |
62 | *************************************************/ | |
63 | ||
64 | /* This is used for opening spool files under a temporary name, | |
65 | with a single attempt at deleting if they already exist. | |
66 | ||
67 | Argument: temporary name for spool header file | |
68 | Returns: file descriptor of open file, or < 0 on failure, with errno unchanged | |
69 | */ | |
70 | ||
71 | int | |
72 | spool_open_temp(uschar *temp_name) | |
73 | { | |
74 | int fd = Uopen(temp_name, O_RDWR|O_CREAT|O_EXCL, SPOOL_MODE); | |
75 | ||
76 | /* If the file already exists, something has gone wrong. This process may well | |
77 | have previously created the file if it is delivering more than one address, but | |
78 | it should have renamed it almost immediately. A file could, however, be left | |
79 | around as a result of a system crash, and by coincidence this process might | |
80 | have the same pid. We therefore have one go at unlinking it before giving up. | |
81 | */ | |
82 | ||
83 | if (fd < 0 && errno == EEXIST) | |
84 | { | |
85 | DEBUG(D_any) debug_printf("%s exists: unlinking\n", temp_name); | |
86 | Uunlink(temp_name); | |
87 | fd = Uopen(temp_name, O_RDWR|O_CREAT|O_EXCL, SPOOL_MODE); | |
88 | } | |
89 | ||
90 | /* If the file has been opened, make sure the file's group is the Exim gid, and | |
91 | double-check the mode because the group setting doesn't always get set | |
92 | automatically. */ | |
93 | ||
94 | if (fd >= 0) | |
1ac6b2e7 JH |
95 | if (fchown(fd, exim_uid, exim_gid) || fchmod(fd, SPOOL_MODE)) |
96 | { | |
97 | DEBUG(D_any) debug_printf("failed setting perms on %s\n", temp_name); | |
98 | (void) close(fd); fd = -1; | |
99 | Uunlink(temp_name); | |
100 | } | |
059ec3d9 PH |
101 | |
102 | return fd; | |
103 | } | |
104 | ||
105 | ||
106 | ||
107 | /************************************************* | |
108 | * Write the header spool file * | |
109 | *************************************************/ | |
110 | ||
111 | /* Returns the size of the file for success; zero for failure. The file is | |
112 | written under a temporary name, and then renamed. It's done this way so that it | |
113 | works with re-writing the file on message deferral as well as for the initial | |
114 | write. Whenever this function is called, the data file for the message should | |
115 | be open and locked, thus preventing any other exim process from working on this | |
116 | message. | |
117 | ||
118 | Argument: | |
119 | id the message id | |
120 | where SW_RECEIVING, SW_DELIVERING, or SW_MODIFYING | |
121 | errmsg where to put an error message; if NULL, panic-die on error | |
122 | ||
123 | Returns: the size of the header texts on success; | |
124 | negative on writing failure, unless errmsg == NULL | |
125 | */ | |
126 | ||
127 | int | |
128 | spool_write_header(uschar *id, int where, uschar **errmsg) | |
129 | { | |
130 | int fd; | |
131 | int i; | |
132 | int size_correction; | |
133 | FILE *f; | |
134 | header_line *h; | |
135 | struct stat statbuf; | |
41313d92 JH |
136 | uschar * tname; |
137 | uschar * fname; | |
059ec3d9 | 138 | |
41313d92 JH |
139 | tname = spool_fname(US"input", message_subdir, |
140 | string_sprintf("hdr.%d", (int)getpid()), US""); | |
a2da3176 | 141 | |
41313d92 | 142 | if ((fd = spool_open_temp(tname)) < 0) |
a2da3176 | 143 | return spool_write_error(where, errmsg, US"open", NULL, NULL); |
059ec3d9 | 144 | f = fdopen(fd, "wb"); |
41313d92 | 145 | DEBUG(D_receive|D_deliver) debug_printf("Writing spool header file: %s\n", tname); |
059ec3d9 PH |
146 | |
147 | /* We now have an open file to which the header data is to be written. Start | |
148 | with the file's leaf name, to make the file self-identifying. Continue with the | |
149 | identity of the submitting user, followed by the sender's address. The sender's | |
150 | address is enclosed in <> because it might be the null address. Then write the | |
151 | received time and the number of warning messages that have been sent. */ | |
152 | ||
153 | fprintf(f, "%s-H\n", message_id); | |
154 | fprintf(f, "%.63s %ld %ld\n", originator_login, (long int)originator_uid, | |
155 | (long int)originator_gid); | |
156 | fprintf(f, "<%s>\n", sender_address); | |
cab0c277 | 157 | fprintf(f, "%d %d\n", (int)received_time.tv_sec, warning_count); |
32dfdf8b | 158 | |
cab0c277 | 159 | fprintf(f, "-received_time_usec .%06d\n", (int)received_time.tv_usec); |
059ec3d9 PH |
160 | |
161 | /* If there is information about a sending host, remember it. The HELO | |
162 | data can be set for local SMTP as well as remote. */ | |
163 | ||
32dfdf8b | 164 | if (sender_helo_name) |
059ec3d9 PH |
165 | fprintf(f, "-helo_name %s\n", sender_helo_name); |
166 | ||
32dfdf8b | 167 | if (sender_host_address) |
059ec3d9 PH |
168 | { |
169 | fprintf(f, "-host_address %s.%d\n", sender_host_address, sender_host_port); | |
32dfdf8b | 170 | if (sender_host_name) |
059ec3d9 | 171 | fprintf(f, "-host_name %s\n", sender_host_name); |
32dfdf8b | 172 | if (sender_host_authenticated) |
059ec3d9 PH |
173 | fprintf(f, "-host_auth %s\n", sender_host_authenticated); |
174 | } | |
175 | ||
176 | /* Also about the interface a message came in on */ | |
177 | ||
32dfdf8b | 178 | if (interface_address) |
059ec3d9 | 179 | fprintf(f, "-interface_address %s.%d\n", interface_address, interface_port); |
8e669ac1 | 180 | |
1f5b4c3d | 181 | if (smtp_active_hostname != primary_hostname) |
8e669ac1 | 182 | fprintf(f, "-active_hostname %s\n", smtp_active_hostname); |
059ec3d9 PH |
183 | |
184 | /* Likewise for any ident information; for local messages this is | |
185 | likely to be the same as originator_login, but will be different if | |
186 | the originator was root, forcing a different ident. */ | |
187 | ||
32dfdf8b | 188 | if (sender_ident) fprintf(f, "-ident %s\n", sender_ident); |
059ec3d9 PH |
189 | |
190 | /* Ditto for the received protocol */ | |
191 | ||
32dfdf8b | 192 | if (received_protocol) |
059ec3d9 PH |
193 | fprintf(f, "-received_protocol %s\n", received_protocol); |
194 | ||
38a0a95f | 195 | /* Preserve any ACL variables that are set. */ |
059ec3d9 | 196 | |
38a0a95f PH |
197 | tree_walk(acl_var_c, &acl_var_write, f); |
198 | tree_walk(acl_var_m, &acl_var_write, f); | |
059ec3d9 PH |
199 | |
200 | /* Now any other data that needs to be remembered. */ | |
201 | ||
328c5688 JH |
202 | if (spool_file_wireformat) |
203 | fprintf(f, "-spool_file_wireformat\n"); | |
204 | else | |
205 | fprintf(f, "-body_linecount %d\n", body_linecount); | |
d677b2f2 | 206 | fprintf(f, "-max_received_linelength %d\n", max_received_linelength); |
059ec3d9 PH |
207 | |
208 | if (body_zerocount > 0) fprintf(f, "-body_zerocount %d\n", body_zerocount); | |
209 | ||
32dfdf8b | 210 | if (authenticated_id) |
059ec3d9 | 211 | fprintf(f, "-auth_id %s\n", authenticated_id); |
32dfdf8b | 212 | if (authenticated_sender) |
059ec3d9 PH |
213 | fprintf(f, "-auth_sender %s\n", authenticated_sender); |
214 | ||
215 | if (allow_unqualified_recipient) fprintf(f, "-allow_unqualified_recipient\n"); | |
216 | if (allow_unqualified_sender) fprintf(f, "-allow_unqualified_sender\n"); | |
217 | if (deliver_firsttime) fprintf(f, "-deliver_firsttime\n"); | |
19050083 | 218 | if (deliver_freeze) fprintf(f, "-frozen " TIME_T_FMT "\n", deliver_frozen_at); |
059ec3d9 | 219 | if (dont_deliver) fprintf(f, "-N\n"); |
b08b24c8 | 220 | if (host_lookup_deferred) fprintf(f, "-host_lookup_deferred\n"); |
059ec3d9 PH |
221 | if (host_lookup_failed) fprintf(f, "-host_lookup_failed\n"); |
222 | if (sender_local) fprintf(f, "-local\n"); | |
223 | if (local_error_message) fprintf(f, "-localerror\n"); | |
9723f966 JH |
224 | #ifdef HAVE_LOCAL_SCAN |
225 | if (local_scan_data) fprintf(f, "-local_scan %s\n", local_scan_data); | |
226 | #endif | |
8523533c | 227 | #ifdef WITH_CONTENT_SCAN |
3481c572 JH |
228 | if (spam_bar) fprintf(f,"-spam_bar %s\n", spam_bar); |
229 | if (spam_score) fprintf(f,"-spam_score %s\n", spam_score); | |
230 | if (spam_score_int) fprintf(f,"-spam_score_int %s\n", spam_score_int); | |
8523533c | 231 | #endif |
059ec3d9 PH |
232 | if (deliver_manual_thaw) fprintf(f, "-manual_thaw\n"); |
233 | if (sender_set_untrusted) fprintf(f, "-sender_set_untrusted\n"); | |
234 | ||
8523533c | 235 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
9723f966 | 236 | if (bmi_verdicts) fprintf(f, "-bmi_verdicts %s\n", bmi_verdicts); |
8523533c TK |
237 | #endif |
238 | ||
059ec3d9 | 239 | #ifdef SUPPORT_TLS |
817d9f57 | 240 | if (tls_in.certificate_verified) fprintf(f, "-tls_certificate_verified\n"); |
9d1c15ef JH |
241 | if (tls_in.cipher) fprintf(f, "-tls_cipher %s\n", tls_in.cipher); |
242 | if (tls_in.peercert) | |
243 | { | |
244 | (void) tls_export_cert(big_buffer, big_buffer_size, tls_in.peercert); | |
245 | fprintf(f, "-tls_peercert %s\n", CS big_buffer); | |
246 | } | |
247 | if (tls_in.peerdn) fprintf(f, "-tls_peerdn %s\n", string_printing(tls_in.peerdn)); | |
248 | if (tls_in.sni) fprintf(f, "-tls_sni %s\n", string_printing(tls_in.sni)); | |
249 | if (tls_in.ourcert) | |
250 | { | |
251 | (void) tls_export_cert(big_buffer, big_buffer_size, tls_in.ourcert); | |
252 | fprintf(f, "-tls_ourcert %s\n", CS big_buffer); | |
253 | } | |
44662487 | 254 | if (tls_in.ocsp) fprintf(f, "-tls_ocsp %d\n", tls_in.ocsp); |
7be682ca | 255 | #endif |
059ec3d9 | 256 | |
8c5d388a | 257 | #ifdef SUPPORT_I18N |
3c8b3577 JH |
258 | if (message_smtputf8) |
259 | { | |
260 | fprintf(f, "-smtputf8\n"); | |
261 | if (message_utf8_downconvert) | |
0ec7e948 | 262 | fprintf(f, "-utf8_%sdowncvt\n", message_utf8_downconvert < 0 ? "opt" : ""); |
3c8b3577 | 263 | } |
7ade712c JH |
264 | #endif |
265 | ||
6c1c3d1d WB |
266 | /* Write the dsn flags to the spool header file */ |
267 | DEBUG(D_deliver) debug_printf("DSN: Write SPOOL :-dsn_envid %s\n", dsn_envid); | |
32dfdf8b | 268 | if (dsn_envid) fprintf(f, "-dsn_envid %s\n", dsn_envid); |
6c1c3d1d WB |
269 | DEBUG(D_deliver) debug_printf("DSN: Write SPOOL :-dsn_ret %d\n", dsn_ret); |
270 | if (dsn_ret != 0) fprintf(f, "-dsn_ret %d\n", dsn_ret); | |
6c1c3d1d | 271 | |
059ec3d9 PH |
272 | /* To complete the envelope, write out the tree of non-recipients, followed by |
273 | the list of recipients. These won't be disjoint the first time, when no | |
274 | checking has been done. If a recipient is a "one-time" alias, it is followed by | |
275 | a space and its parent address number (pno). */ | |
276 | ||
277 | tree_write(tree_nonrecipients, f); | |
278 | fprintf(f, "%d\n", recipients_count); | |
279 | for (i = 0; i < recipients_count; i++) | |
280 | { | |
281 | recipient_item *r = recipients_list + i; | |
6e3b198d JH |
282 | |
283 | DEBUG(D_deliver) debug_printf("DSN: Flags :%d\n", r->dsn_flags); | |
284 | ||
50dc7409 | 285 | if (r->pno < 0 && r->errors_to == NULL && r->dsn_flags == 0) |
059ec3d9 PH |
286 | fprintf(f, "%s\n", r->address); |
287 | else | |
288 | { | |
6e3b198d | 289 | uschar * errors_to = r->errors_to ? r->errors_to : US""; |
6c1c3d1d | 290 | /* for DSN SUPPORT extend exim 4 spool in a compatible way by |
6e3b198d JH |
291 | adding new values upfront and add flag 0x02 */ |
292 | uschar * orcpt = r->orcpt ? r->orcpt : US""; | |
293 | ||
294 | fprintf(f, "%s %s %d,%d %s %d,%d#3\n", r->address, orcpt, Ustrlen(orcpt), | |
295 | r->dsn_flags, errors_to, Ustrlen(errors_to), r->pno); | |
059ec3d9 | 296 | } |
94431adb | 297 | |
6e3b198d JH |
298 | DEBUG(D_deliver) debug_printf("DSN: **** SPOOL_OUT - " |
299 | "address: |%s| errorsto: |%s| orcpt: |%s| dsn_flags: %d\n", | |
300 | r->address, r->errors_to, r->orcpt, r->dsn_flags); | |
059ec3d9 PH |
301 | } |
302 | ||
303 | /* Put a blank line before the headers */ | |
304 | ||
305 | fprintf(f, "\n"); | |
306 | ||
307 | /* Save the size of the file so far so we can subtract it from the final length | |
308 | to get the actual size of the headers. */ | |
309 | ||
310 | fflush(f); | |
6e3b198d | 311 | if (fstat(fd, &statbuf)) |
41313d92 | 312 | return spool_write_error(where, errmsg, US"fstat", tname, f); |
059ec3d9 PH |
313 | size_correction = statbuf.st_size; |
314 | ||
315 | /* Finally, write out the message's headers. To make it easier to read them | |
316 | in again, precede each one with the count of its length. Make the count fixed | |
317 | length to aid human eyes when debugging and arrange for it not be included in | |
318 | the size. It is followed by a space for normal headers, a flagging letter for | |
319 | various other headers, or an asterisk for old headers that have been rewritten. | |
320 | These are saved as a record for debugging. Don't included them in the message's | |
321 | size. */ | |
322 | ||
32dfdf8b | 323 | for (h = header_list; h; h = h->next) |
059ec3d9 PH |
324 | { |
325 | fprintf(f, "%03d%c %s", h->slen, h->type, h->text); | |
326 | size_correction += 5; | |
327 | if (h->type == '*') size_correction += h->slen; | |
328 | } | |
329 | ||
330 | /* Flush and check for any errors while writing */ | |
331 | ||
332 | if (fflush(f) != 0 || ferror(f)) | |
41313d92 | 333 | return spool_write_error(where, errmsg, US"write", tname, f); |
059ec3d9 PH |
334 | |
335 | /* Force the file's contents to be written to disk. Note that fflush() | |
336 | just pushes it out of C, and fclose() doesn't guarantee to do the write | |
337 | either. That's just the way Unix works... */ | |
338 | ||
54fc8428 | 339 | if (EXIMfsync(fileno(f)) < 0) |
41313d92 | 340 | return spool_write_error(where, errmsg, US"sync", tname, f); |
059ec3d9 PH |
341 | |
342 | /* Get the size of the file, and close it. */ | |
343 | ||
d4ff61d1 | 344 | if (fstat(fd, &statbuf) != 0) |
41313d92 | 345 | return spool_write_error(where, errmsg, US"fstat", tname, NULL); |
059ec3d9 | 346 | if (fclose(f) != 0) |
41313d92 | 347 | return spool_write_error(where, errmsg, US"close", tname, NULL); |
059ec3d9 PH |
348 | |
349 | /* Rename the file to its correct name, thereby replacing any previous | |
350 | incarnation. */ | |
351 | ||
41313d92 JH |
352 | fname = spool_fname(US"input", message_subdir, id, US"-H"); |
353 | DEBUG(D_receive|D_deliver) debug_printf("Renaming spool header file: %s\n", fname); | |
059ec3d9 | 354 | |
41313d92 JH |
355 | if (Urename(tname, fname) < 0) |
356 | return spool_write_error(where, errmsg, US"rename", tname, NULL); | |
059ec3d9 PH |
357 | |
358 | /* Linux (and maybe other OS?) does not automatically sync a directory after | |
359 | an operation like rename. We therefore have to do it forcibly ourselves in | |
360 | these cases, to make sure the file is actually accessible on disk, as opposed | |
361 | to just the data being accessible from a file in lost+found. Linux also has | |
362 | O_DIRECTORY, for opening a directory. | |
363 | ||
364 | However, it turns out that some file systems (some versions of NFS?) do not | |
365 | support directory syncing. It seems safe enough to ignore EINVAL to cope with | |
366 | these cases. One hack on top of another... but that's life. */ | |
367 | ||
368 | #ifdef NEED_SYNC_DIRECTORY | |
369 | ||
41313d92 | 370 | tname = spool_fname(US"input", message_subdir, US".", US""); |
059ec3d9 | 371 | |
41313d92 JH |
372 | # ifndef O_DIRECTORY |
373 | # define O_DIRECTORY 0 | |
374 | # endif | |
059ec3d9 | 375 | |
41313d92 JH |
376 | if ((fd = Uopen(tname, O_RDONLY|O_DIRECTORY, 0)) < 0) |
377 | return spool_write_error(where, errmsg, US"directory open", fname, NULL); | |
059ec3d9 | 378 | |
54fc8428 | 379 | if (EXIMfsync(fd) < 0 && errno != EINVAL) |
41313d92 | 380 | return spool_write_error(where, errmsg, US"directory sync", fname, NULL); |
059ec3d9 PH |
381 | |
382 | if (close(fd) < 0) | |
41313d92 | 383 | return spool_write_error(where, errmsg, US"directory close", fname, NULL); |
059ec3d9 PH |
384 | |
385 | #endif /* NEED_SYNC_DIRECTORY */ | |
386 | ||
387 | /* Return the number of characters in the headers, which is the file size, less | |
4c04137d | 388 | the preliminary stuff, less the additional count fields on the headers. */ |
059ec3d9 PH |
389 | |
390 | DEBUG(D_receive) debug_printf("Size of headers = %d\n", | |
391 | (int)(statbuf.st_size - size_correction)); | |
392 | ||
393 | return statbuf.st_size - size_correction; | |
394 | } | |
395 | ||
396 | ||
397 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES | |
398 | ||
399 | /************************************************ | |
400 | * Make a hard link * | |
401 | ************************************************/ | |
402 | ||
403 | /* Used by spool_move_message() below. Note re the use of sprintf(): the value | |
404 | of spool_directory is checked to ensure that it is less than 200 characters at | |
405 | start-up time. | |
406 | ||
407 | Arguments: | |
408 | dir base directory name | |
409 | subdir subdirectory name | |
410 | id message id | |
411 | suffix suffix to add to id | |
412 | from source directory prefix | |
413 | to destination directory prefix | |
414 | noentok if TRUE, absence of file is not an error | |
415 | ||
416 | Returns: TRUE if all went well | |
417 | FALSE, having panic logged if not | |
418 | */ | |
419 | ||
420 | static BOOL | |
421 | make_link(uschar *dir, uschar *subdir, uschar *id, uschar *suffix, uschar *from, | |
422 | uschar *to, BOOL noentok) | |
423 | { | |
41313d92 JH |
424 | uschar * fname = spool_fname(string_sprintf("%s%s", from, dir), subdir, id, suffix); |
425 | uschar * tname = spool_fname(string_sprintf("%s%s", to, dir), subdir, id, suffix); | |
426 | if (Ulink(fname, tname) < 0 && (!noentok || errno != ENOENT)) | |
059ec3d9 PH |
427 | { |
428 | log_write(0, LOG_MAIN|LOG_PANIC, "link(\"%s\", \"%s\") failed while moving " | |
41313d92 | 429 | "message: %s", fname, tname, strerror(errno)); |
059ec3d9 PH |
430 | return FALSE; |
431 | } | |
432 | return TRUE; | |
433 | } | |
434 | ||
435 | ||
436 | ||
437 | /************************************************ | |
438 | * Break a link * | |
439 | ************************************************/ | |
440 | ||
441 | /* Used by spool_move_message() below. Note re the use of sprintf(): the value | |
442 | of spool_directory is checked to ensure that it is less than 200 characters at | |
443 | start-up time. | |
444 | ||
445 | Arguments: | |
446 | dir base directory name | |
447 | subdir subdirectory name | |
448 | id message id | |
449 | suffix suffix to add to id | |
450 | from source directory prefix | |
451 | noentok if TRUE, absence of file is not an error | |
452 | ||
453 | Returns: TRUE if all went well | |
454 | FALSE, having panic logged if not | |
455 | */ | |
456 | ||
457 | static BOOL | |
458 | break_link(uschar *dir, uschar *subdir, uschar *id, uschar *suffix, uschar *from, | |
459 | BOOL noentok) | |
460 | { | |
41313d92 JH |
461 | uschar * fname = spool_fname(string_sprintf("%s%s", from, dir), subdir, id, suffix); |
462 | if (Uunlink(fname) < 0 && (!noentok || errno != ENOENT)) | |
059ec3d9 PH |
463 | { |
464 | log_write(0, LOG_MAIN|LOG_PANIC, "unlink(\"%s\") failed while moving " | |
41313d92 | 465 | "message: %s", fname, strerror(errno)); |
059ec3d9 PH |
466 | return FALSE; |
467 | } | |
468 | return TRUE; | |
469 | } | |
470 | ||
471 | ||
472 | ||
473 | /************************************************ | |
474 | * Move message files * | |
475 | ************************************************/ | |
476 | ||
477 | /* Move the files for a message (-H, -D, and msglog) from one directory (or | |
478 | hierarchy) to another. It is assume that there is no -J file in existence when | |
479 | this is done. At present, this is used only when move_frozen_messages is set, | |
480 | so compile it only when that support is configured. | |
481 | ||
482 | Arguments: | |
483 | id the id of the message to be delivered | |
484 | subdir the subdirectory name, or an empty string | |
485 | from a prefix for "input" or "msglog" for where the message is now | |
486 | to a prefix for "input" or "msglog" for where the message is to go | |
487 | ||
488 | Returns: TRUE if all is well | |
489 | FALSE if not, with error logged in panic and main logs | |
490 | */ | |
491 | ||
492 | BOOL | |
493 | spool_move_message(uschar *id, uschar *subdir, uschar *from, uschar *to) | |
494 | { | |
495 | /* Create any output directories that do not exist. */ | |
496 | ||
41313d92 JH |
497 | (void) directory_make(spool_directory, |
498 | spool_sname(string_sprintf("%sinput", to), subdir), | |
499 | INPUT_DIRECTORY_MODE, TRUE); | |
500 | (void) directory_make(spool_directory, | |
501 | spool_sname(string_sprintf("%smsglog", to), subdir), | |
502 | INPUT_DIRECTORY_MODE, TRUE); | |
059ec3d9 PH |
503 | |
504 | /* Move the message by first creating new hard links for all the files, and | |
505 | then removing the old links. When moving messages onto the main spool, the -H | |
506 | file should be set up last, because that's the one that tells Exim there is a | |
507 | message to be delivered, so we create its new link last and remove its old link | |
508 | first. Programs that look at the alternate directories should follow the same | |
85ffcba6 | 509 | rule of waiting for a -H file before doing anything. When moving messages off |
059ec3d9 PH |
510 | the mail spool, the -D file should be open and locked at the time, thus keeping |
511 | Exim's hands off. */ | |
512 | ||
513 | if (!make_link(US"msglog", subdir, id, US"", from, to, TRUE) || | |
514 | !make_link(US"input", subdir, id, US"-D", from, to, FALSE) || | |
515 | !make_link(US"input", subdir, id, US"-H", from, to, FALSE)) | |
516 | return FALSE; | |
517 | ||
518 | if (!break_link(US"input", subdir, id, US"-H", from, FALSE) || | |
519 | !break_link(US"input", subdir, id, US"-D", from, FALSE) || | |
520 | !break_link(US"msglog", subdir, id, US"", from, TRUE)) | |
521 | return FALSE; | |
522 | ||
523 | log_write(0, LOG_MAIN, "moved from %sinput, %smsglog to %sinput, %smsglog", | |
524 | from, from, to, to); | |
525 | ||
526 | return TRUE; | |
527 | } | |
528 | ||
529 | #endif | |
530 | ||
531 | /* End of spool_out.c */ | |
3c8b3577 JH |
532 | /* vi: aw ai sw=2 |
533 | */ |