Commit | Line | Data |
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6b3ee98a | 1 | /* sendmail-like interface to /bin/mail for system V, |
b3d90e46 GM |
2 | Copyright (C) 1985, 1994, 1999, 2001, 2002, 2003, 2004, |
3 | 2005, 2006, 2007 Free Software Foundation, Inc. | |
6b3ee98a RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
518dd722 JB |
7 | GNU Emacs is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
4a9f99bd | 9 | the Free Software Foundation; either version 3, or (at your option) |
518dd722 JB |
10 | any later version. |
11 | ||
6b3ee98a | 12 | GNU Emacs is distributed in the hope that it will be useful, |
518dd722 JB |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
364c38d3 LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
6b3ee98a | 21 | |
6b3ee98a | 22 | #define NO_SHORTNAMES |
a33c19b1 | 23 | #define _XOPEN_SOURCE 500 /* for cuserid */ |
594aa066 PJ |
24 | |
25 | #ifdef HAVE_CONFIG_H | |
4838e624 | 26 | #include <config.h> |
594aa066 | 27 | #endif |
6b3ee98a | 28 | |
e397a017 | 29 | #if defined (BSD_SYSTEM) && !defined (BSD4_1) && !defined (USE_FAKEMAIL) |
6b3ee98a | 30 | /* This program isnot used in BSD, so just avoid loader complaints. */ |
d0dff6e5 | 31 | int |
6b3ee98a RS |
32 | main () |
33 | { | |
0d1841a6 | 34 | return 0; |
6b3ee98a RS |
35 | } |
36 | #else /* not BSD 4.2 (or newer) */ | |
26528bbc | 37 | #ifdef MSDOS |
d0dff6e5 | 38 | int |
26528bbc RS |
39 | main () |
40 | { | |
0d1841a6 | 41 | return 0; |
26528bbc RS |
42 | } |
43 | #else /* not MSDOS */ | |
6b3ee98a RS |
44 | /* This conditional contains all the rest of the file. */ |
45 | ||
46 | /* These are defined in config in some versions. */ | |
47 | ||
48 | #ifdef static | |
49 | #undef static | |
50 | #endif | |
51 | ||
7c544420 RS |
52 | #ifdef WINDOWSNT |
53 | #include "ntlib.h" | |
54 | #endif | |
55 | ||
6b3ee98a RS |
56 | #include <stdio.h> |
57 | #include <string.h> | |
58 | #include <ctype.h> | |
59 | #include <time.h> | |
60 | #include <pwd.h> | |
7543028e RS |
61 | |
62 | /* This is to declare cuserid. */ | |
63 | #ifdef HAVE_UNISTD_H | |
64 | #include <unistd.h> | |
65 | #endif | |
6b3ee98a RS |
66 | \f |
67 | /* Type definitions */ | |
68 | ||
69 | #define boolean int | |
70 | #define true 1 | |
71 | #define false 0 | |
72 | ||
d65b4235 PE |
73 | #define TM_YEAR_BASE 1900 |
74 | ||
75 | /* Nonzero if TM_YEAR is a struct tm's tm_year value that causes | |
76 | asctime to have well-defined behavior. */ | |
77 | #ifndef TM_YEAR_IN_ASCTIME_RANGE | |
f5565804 | 78 | # define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \ |
d65b4235 | 79 | (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE) |
f5565804 PE |
80 | #endif |
81 | ||
6b3ee98a RS |
82 | /* Various lists */ |
83 | ||
84 | struct line_record | |
85 | { | |
86 | char *string; | |
87 | struct line_record *continuation; | |
88 | }; | |
89 | typedef struct line_record *line_list; | |
90 | ||
91 | struct header_record | |
92 | { | |
93 | line_list text; | |
94 | struct header_record *next; | |
95 | struct header_record *previous; | |
96 | }; | |
97 | typedef struct header_record *header; | |
594aa066 | 98 | |
6b3ee98a RS |
99 | struct stream_record |
100 | { | |
101 | FILE *handle; | |
102 | int (*action)(); | |
103 | struct stream_record *rest_streams; | |
104 | }; | |
105 | typedef struct stream_record *stream_list; | |
106 | ||
107 | /* A `struct linebuffer' is a structure which holds a line of text. | |
108 | * `readline' reads a line from a stream into a linebuffer | |
109 | * and works regardless of the length of the line. | |
110 | */ | |
111 | ||
112 | struct linebuffer | |
113 | { | |
114 | long size; | |
115 | char *buffer; | |
116 | }; | |
117 | ||
118 | struct linebuffer lb; | |
119 | ||
120 | #define new_list() \ | |
121 | ((line_list) xmalloc (sizeof (struct line_record))) | |
122 | #define new_header() \ | |
123 | ((header) xmalloc (sizeof (struct header_record))) | |
124 | #define new_stream() \ | |
125 | ((stream_list) xmalloc (sizeof (struct stream_record))) | |
126 | #define alloc_string(nchars) \ | |
127 | ((char *) xmalloc ((nchars) + 1)) | |
128 | \f | |
129 | /* Global declarations */ | |
130 | ||
131 | #define BUFLEN 1024 | |
132 | #define KEYWORD_SIZE 256 | |
133 | #define FROM_PREFIX "From" | |
134 | #define MY_NAME "fakemail" | |
135 | #define NIL ((line_list) NULL) | |
136 | #define INITIAL_LINE_SIZE 200 | |
137 | ||
138 | #ifndef MAIL_PROGRAM_NAME | |
139 | #define MAIL_PROGRAM_NAME "/bin/mail" | |
140 | #endif | |
141 | ||
142 | static char *my_name; | |
143 | static char *the_date; | |
144 | static char *the_user; | |
145 | static line_list file_preface; | |
146 | static stream_list the_streams; | |
147 | static boolean no_problems = true; | |
148 | ||
149 | extern FILE *popen (); | |
150 | extern int fclose (), pclose (); | |
6b3ee98a RS |
151 | |
152 | #ifdef CURRENT_USER | |
153 | extern struct passwd *getpwuid (); | |
154 | extern unsigned short geteuid (); | |
155 | static struct passwd *my_entry; | |
156 | #define cuserid(s) \ | |
157 | (my_entry = getpwuid (((int) geteuid ())), \ | |
158 | my_entry->pw_name) | |
159 | #endif | |
160 | \f | |
161 | /* Utilities */ | |
162 | ||
163 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
164 | ||
165 | static void | |
166 | error (s1, s2) | |
167 | char *s1, *s2; | |
168 | { | |
169 | printf ("%s: ", my_name); | |
170 | printf (s1, s2); | |
171 | printf ("\n"); | |
172 | no_problems = false; | |
173 | } | |
174 | ||
175 | /* Print error message and exit. */ | |
176 | ||
177 | static void | |
5a84ed33 AS |
178 | fatal (s1) |
179 | char *s1; | |
6b3ee98a | 180 | { |
5a84ed33 | 181 | error ("%s", s1); |
65396510 | 182 | exit (EXIT_FAILURE); |
6b3ee98a RS |
183 | } |
184 | ||
185 | /* Like malloc but get fatal error if memory is exhausted. */ | |
186 | ||
65119039 | 187 | static long * |
6b3ee98a RS |
188 | xmalloc (size) |
189 | int size; | |
190 | { | |
65119039 RS |
191 | long *result = (long *) malloc (((unsigned) size)); |
192 | if (result == ((long *) NULL)) | |
5a84ed33 | 193 | fatal ("virtual memory exhausted"); |
6b3ee98a RS |
194 | return result; |
195 | } | |
196 | ||
65119039 | 197 | static long * |
6b3ee98a | 198 | xrealloc (ptr, size) |
65119039 | 199 | long *ptr; |
6b3ee98a RS |
200 | int size; |
201 | { | |
65119039 | 202 | long *result = (long *) realloc (ptr, ((unsigned) size)); |
5391a863 | 203 | if (result == ((long *) NULL)) |
6b3ee98a RS |
204 | fatal ("virtual memory exhausted"); |
205 | return result; | |
206 | } | |
207 | \f | |
208 | /* Initialize a linebuffer for use */ | |
209 | ||
210 | void | |
211 | init_linebuffer (linebuffer) | |
212 | struct linebuffer *linebuffer; | |
213 | { | |
214 | linebuffer->size = INITIAL_LINE_SIZE; | |
215 | linebuffer->buffer = ((char *) xmalloc (INITIAL_LINE_SIZE)); | |
216 | } | |
217 | ||
218 | /* Read a line of text from `stream' into `linebuffer'. | |
594aa066 | 219 | Return the length of the line. */ |
6b3ee98a RS |
220 | |
221 | long | |
222 | readline (linebuffer, stream) | |
223 | struct linebuffer *linebuffer; | |
224 | FILE *stream; | |
225 | { | |
226 | char *buffer = linebuffer->buffer; | |
227 | char *p = linebuffer->buffer; | |
228 | char *end = p + linebuffer->size; | |
229 | ||
230 | while (true) | |
231 | { | |
232 | int c = getc (stream); | |
233 | if (p == end) | |
234 | { | |
235 | linebuffer->size *= 2; | |
26df3bb0 | 236 | buffer = ((char *) xrealloc ((long *)buffer, linebuffer->size)); |
f3309b68 | 237 | p = buffer + (p - linebuffer->buffer); |
1ddb6978 | 238 | end = buffer + linebuffer->size; |
6b3ee98a RS |
239 | linebuffer->buffer = buffer; |
240 | } | |
241 | if (c < 0 || c == '\n') | |
242 | { | |
243 | *p = 0; | |
244 | break; | |
245 | } | |
246 | *p++ = c; | |
247 | } | |
248 | ||
249 | return p - buffer; | |
250 | } | |
251 | \f | |
3d23b985 RS |
252 | /* Extract a colon-terminated keyword from the string FIELD. |
253 | Return that keyword as a string stored in a static buffer. | |
254 | Store the address of the rest of the string into *REST. | |
255 | ||
256 | If there is no keyword, return NULL and don't alter *REST. */ | |
257 | ||
6b3ee98a RS |
258 | char * |
259 | get_keyword (field, rest) | |
260 | register char *field; | |
261 | char **rest; | |
262 | { | |
263 | static char keyword[KEYWORD_SIZE]; | |
264 | register char *ptr; | |
859cbb40 | 265 | register int c; |
6b3ee98a RS |
266 | |
267 | ptr = &keyword[0]; | |
859cbb40 | 268 | c = (unsigned char) *field++; |
3d23b985 | 269 | if (isspace (c) || c == ':') |
6b3ee98a | 270 | return ((char *) NULL); |
3d23b985 | 271 | *ptr++ = (islower (c) ? toupper (c) : c); |
859cbb40 | 272 | while (((c = (unsigned char) *field++) != ':') && ! isspace (c)) |
3d23b985 | 273 | *ptr++ = (islower (c) ? toupper (c) : c); |
6b3ee98a | 274 | *ptr++ = '\0'; |
3d23b985 | 275 | while (isspace (c)) |
859cbb40 | 276 | c = (unsigned char) *field++; |
3d23b985 RS |
277 | if (c != ':') |
278 | return ((char *) NULL); | |
6b3ee98a RS |
279 | *rest = field; |
280 | return &keyword[0]; | |
281 | } | |
282 | ||
3d23b985 RS |
283 | /* Nonzero if the string FIELD starts with a colon-terminated keyword. */ |
284 | ||
6b3ee98a RS |
285 | boolean |
286 | has_keyword (field) | |
287 | char *field; | |
288 | { | |
289 | char *ignored; | |
290 | return (get_keyword (field, &ignored) != ((char *) NULL)); | |
291 | } | |
292 | ||
3d23b985 RS |
293 | /* Store the string FIELD, followed by any lines in THE_LIST, |
294 | into the buffer WHERE. | |
295 | Concatenate lines, putting just a space between them. | |
296 | Delete everything contained in parentheses. | |
297 | When a recipient name contains <...>, we discard | |
298 | everything except what is inside the <...>. | |
299 | ||
300 | We don't pay attention to overflowing WHERE; | |
301 | the caller has to make it big enough. */ | |
302 | ||
6b3ee98a RS |
303 | char * |
304 | add_field (the_list, field, where) | |
305 | line_list the_list; | |
306 | register char *field, *where; | |
307 | { | |
308 | register char c; | |
309 | while (true) | |
310 | { | |
3d23b985 RS |
311 | char *this_recipient_where; |
312 | int in_quotes = 0; | |
313 | ||
6b3ee98a | 314 | *where++ = ' '; |
3d23b985 RS |
315 | this_recipient_where = where; |
316 | ||
6b3ee98a RS |
317 | while ((c = *field++) != '\0') |
318 | { | |
3d23b985 RS |
319 | if (c == '\\') |
320 | *where++ = c; | |
321 | else if (c == '"') | |
322 | { | |
323 | in_quotes = ! in_quotes; | |
324 | *where++ = c; | |
325 | } | |
326 | else if (in_quotes) | |
327 | *where++ = c; | |
328 | else if (c == '(') | |
6b3ee98a RS |
329 | { |
330 | while (*field && *field != ')') ++field; | |
3d23b985 RS |
331 | if (! (*field++)) break; /* no close */ |
332 | continue; | |
6b3ee98a | 333 | } |
3d23b985 RS |
334 | else if (c == ',') |
335 | { | |
336 | *where++ = ' '; | |
337 | /* When we get to the end of one recipient, | |
338 | don't discard it if the next one has <...>. */ | |
339 | this_recipient_where = where; | |
340 | } | |
341 | else if (c == '<') | |
342 | /* Discard everything we got before the `<'. */ | |
343 | where = this_recipient_where; | |
344 | else if (c == '>') | |
345 | /* Discard the rest of this name that follows the `>'. */ | |
346 | { | |
347 | while (*field && *field != ',') ++field; | |
348 | if (! (*field++)) break; /* no comma */ | |
349 | continue; | |
350 | } | |
351 | else | |
352 | *where++ = c; | |
6b3ee98a RS |
353 | } |
354 | if (the_list == NIL) break; | |
355 | field = the_list->string; | |
356 | the_list = the_list->continuation; | |
357 | } | |
358 | return where; | |
359 | } | |
360 | \f | |
361 | line_list | |
362 | make_file_preface () | |
363 | { | |
364 | char *the_string, *temp; | |
365 | long idiotic_interface; | |
f5565804 | 366 | struct tm *tm; |
6b3ee98a RS |
367 | long prefix_length; |
368 | long user_length; | |
369 | long date_length; | |
370 | line_list result; | |
371 | ||
372 | prefix_length = strlen (FROM_PREFIX); | |
373 | time (&idiotic_interface); | |
f5565804 PE |
374 | /* Convert to a string, checking for out-of-range time stamps. |
375 | Don't use 'ctime', as that might dump core if the hardware clock | |
376 | is set to a bizarre value. */ | |
377 | tm = localtime (&idiotic_interface); | |
d65b4235 PE |
378 | if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year) |
379 | && (the_date = asctime (tm)))) | |
5a84ed33 | 380 | fatal ("current time is out of range"); |
6b3ee98a RS |
381 | /* the_date has an unwanted newline at the end */ |
382 | date_length = strlen (the_date) - 1; | |
383 | the_date[date_length] = '\0'; | |
384 | temp = cuserid ((char *) NULL); | |
385 | user_length = strlen (temp); | |
386 | the_user = alloc_string (user_length + 1); | |
387 | strcpy (the_user, temp); | |
7543028e RS |
388 | the_string = alloc_string (3 + prefix_length |
389 | + user_length | |
390 | + date_length); | |
6b3ee98a RS |
391 | temp = the_string; |
392 | strcpy (temp, FROM_PREFIX); | |
393 | temp = &temp[prefix_length]; | |
394 | *temp++ = ' '; | |
395 | strcpy (temp, the_user); | |
396 | temp = &temp[user_length]; | |
397 | *temp++ = ' '; | |
398 | strcpy (temp, the_date); | |
399 | result = new_list (); | |
400 | result->string = the_string; | |
401 | result->continuation = ((line_list) NULL); | |
402 | return result; | |
403 | } | |
404 | ||
405 | void | |
406 | write_line_list (the_list, the_stream) | |
407 | register line_list the_list; | |
408 | FILE *the_stream; | |
409 | { | |
410 | for ( ; | |
411 | the_list != ((line_list) NULL) ; | |
412 | the_list = the_list->continuation) | |
413 | { | |
414 | fputs (the_list->string, the_stream); | |
415 | putc ('\n', the_stream); | |
416 | } | |
417 | return; | |
418 | } | |
419 | \f | |
420 | int | |
421 | close_the_streams () | |
422 | { | |
423 | register stream_list rem; | |
424 | for (rem = the_streams; | |
425 | rem != ((stream_list) NULL); | |
426 | rem = rem->rest_streams) | |
427 | no_problems = (no_problems && | |
428 | ((*rem->action) (rem->handle) == 0)); | |
429 | the_streams = ((stream_list) NULL); | |
65396510 | 430 | return (no_problems ? EXIT_SUCCESS : EXIT_FAILURE); |
6b3ee98a RS |
431 | } |
432 | ||
433 | void | |
434 | add_a_stream (the_stream, closing_action) | |
435 | FILE *the_stream; | |
436 | int (*closing_action)(); | |
437 | { | |
438 | stream_list old = the_streams; | |
439 | the_streams = new_stream (); | |
440 | the_streams->handle = the_stream; | |
441 | the_streams->action = closing_action; | |
442 | the_streams->rest_streams = old; | |
443 | return; | |
444 | } | |
445 | ||
446 | int | |
447 | my_fclose (the_file) | |
448 | FILE *the_file; | |
449 | { | |
450 | putc ('\n', the_file); | |
451 | fflush (the_file); | |
452 | return fclose (the_file); | |
453 | } | |
454 | ||
455 | boolean | |
456 | open_a_file (name) | |
457 | char *name; | |
458 | { | |
459 | FILE *the_stream = fopen (name, "a"); | |
460 | if (the_stream != ((FILE *) NULL)) | |
461 | { | |
462 | add_a_stream (the_stream, my_fclose); | |
463 | if (the_user == ((char *) NULL)) | |
464 | file_preface = make_file_preface (); | |
465 | write_line_list (file_preface, the_stream); | |
466 | return true; | |
467 | } | |
468 | return false; | |
469 | } | |
470 | ||
471 | void | |
472 | put_string (s) | |
473 | char *s; | |
474 | { | |
475 | register stream_list rem; | |
476 | for (rem = the_streams; | |
477 | rem != ((stream_list) NULL); | |
478 | rem = rem->rest_streams) | |
479 | fputs (s, rem->handle); | |
480 | return; | |
481 | } | |
482 | ||
483 | void | |
a492a5b9 RS |
484 | put_line (string) |
485 | char *string; | |
6b3ee98a RS |
486 | { |
487 | register stream_list rem; | |
488 | for (rem = the_streams; | |
489 | rem != ((stream_list) NULL); | |
490 | rem = rem->rest_streams) | |
491 | { | |
a492a5b9 RS |
492 | char *s = string; |
493 | int column = 0; | |
494 | ||
495 | /* Divide STRING into lines. */ | |
496 | while (*s != 0) | |
497 | { | |
498 | char *breakpos; | |
499 | ||
fbffe7d9 | 500 | /* Find the last char that fits. */ |
a492a5b9 RS |
501 | for (breakpos = s; *breakpos && column < 78; ++breakpos) |
502 | { | |
503 | if (*breakpos == '\t') | |
504 | column += 8; | |
505 | else | |
506 | column++; | |
507 | } | |
fbffe7d9 RS |
508 | /* If we didn't reach end of line, break the line. */ |
509 | if (*breakpos) | |
a492a5b9 | 510 | { |
fbffe7d9 RS |
511 | /* Back up to just after the last comma that fits. */ |
512 | while (breakpos != s && breakpos[-1] != ',') --breakpos; | |
513 | ||
514 | if (breakpos == s) | |
515 | { | |
516 | /* If no comma fits, move past the first address anyway. */ | |
517 | while (*breakpos != 0 && *breakpos != ',') ++breakpos; | |
518 | if (*breakpos != 0) | |
519 | /* Include the comma after it. */ | |
520 | ++breakpos; | |
521 | } | |
a492a5b9 RS |
522 | } |
523 | /* Output that much, then break the line. */ | |
524 | fwrite (s, 1, breakpos - s, rem->handle); | |
a492a5b9 RS |
525 | column = 8; |
526 | ||
527 | /* Skip whitespace and prepare to print more addresses. */ | |
528 | s = breakpos; | |
529 | while (*s == ' ' || *s == '\t') ++s; | |
c1380f31 RS |
530 | if (*s != 0) |
531 | fputs ("\n\t", rem->handle); | |
a492a5b9 | 532 | } |
6b3ee98a RS |
533 | putc ('\n', rem->handle); |
534 | } | |
535 | return; | |
536 | } | |
537 | \f | |
538 | #define mail_error error | |
539 | ||
3d23b985 RS |
540 | /* Handle an FCC field. FIELD is the text of the first line (after |
541 | the header name), and THE_LIST holds the continuation lines if any. | |
542 | Call open_a_file for each file. */ | |
543 | ||
6b3ee98a RS |
544 | void |
545 | setup_files (the_list, field) | |
546 | register line_list the_list; | |
547 | register char *field; | |
548 | { | |
549 | register char *start; | |
550 | register char c; | |
551 | while (true) | |
552 | { | |
3d23b985 RS |
553 | while (((c = *field) != '\0') |
554 | && (c == ' ' | |
555 | || c == '\t' | |
556 | || c == ',')) | |
6b3ee98a RS |
557 | field += 1; |
558 | if (c != '\0') | |
559 | { | |
560 | start = field; | |
3d23b985 RS |
561 | while (((c = *field) != '\0') |
562 | && c != ' ' | |
563 | && c != '\t' | |
564 | && c != ',') | |
6b3ee98a RS |
565 | field += 1; |
566 | *field = '\0'; | |
567 | if (!open_a_file (start)) | |
568 | mail_error ("Could not open file %s", start); | |
569 | *field = c; | |
570 | if (c != '\0') continue; | |
571 | } | |
3d23b985 RS |
572 | if (the_list == ((line_list) NULL)) |
573 | return; | |
6b3ee98a RS |
574 | field = the_list->string; |
575 | the_list = the_list->continuation; | |
576 | } | |
577 | } | |
578 | \f | |
3d23b985 RS |
579 | /* Compute the total size of all recipient names stored in THE_HEADER. |
580 | The result says how big to make the buffer to pass to parse_header. */ | |
581 | ||
6b3ee98a RS |
582 | int |
583 | args_size (the_header) | |
584 | header the_header; | |
585 | { | |
586 | register header old = the_header; | |
587 | register line_list rem; | |
588 | register int size = 0; | |
589 | do | |
590 | { | |
591 | char *field; | |
592 | register char *keyword = get_keyword (the_header->text->string, &field); | |
3d23b985 RS |
593 | if ((strcmp (keyword, "TO") == 0) |
594 | || (strcmp (keyword, "CC") == 0) | |
595 | || (strcmp (keyword, "BCC") == 0)) | |
6b3ee98a RS |
596 | { |
597 | size += 1 + strlen (field); | |
598 | for (rem = the_header->text->continuation; | |
599 | rem != NIL; | |
600 | rem = rem->continuation) | |
601 | size += 1 + strlen (rem->string); | |
602 | } | |
603 | the_header = the_header->next; | |
604 | } while (the_header != old); | |
605 | return size; | |
606 | } | |
607 | ||
3d23b985 RS |
608 | /* Scan the header described by the lists THE_HEADER, |
609 | and put all recipient names into the buffer WHERE. | |
610 | Precede each recipient name with a space. | |
611 | ||
612 | Also, if the header has any FCC fields, call setup_files for each one. */ | |
613 | ||
cb58ebb0 | 614 | void |
6b3ee98a RS |
615 | parse_header (the_header, where) |
616 | header the_header; | |
617 | register char *where; | |
618 | { | |
619 | register header old = the_header; | |
620 | do | |
621 | { | |
622 | char *field; | |
623 | register char *keyword = get_keyword (the_header->text->string, &field); | |
624 | if (strcmp (keyword, "TO") == 0) | |
625 | where = add_field (the_header->text->continuation, field, where); | |
626 | else if (strcmp (keyword, "CC") == 0) | |
627 | where = add_field (the_header->text->continuation, field, where); | |
628 | else if (strcmp (keyword, "BCC") == 0) | |
629 | { | |
630 | where = add_field (the_header->text->continuation, field, where); | |
631 | the_header->previous->next = the_header->next; | |
632 | the_header->next->previous = the_header->previous; | |
633 | } | |
634 | else if (strcmp (keyword, "FCC") == 0) | |
635 | setup_files (the_header->text->continuation, field); | |
636 | the_header = the_header->next; | |
637 | } while (the_header != old); | |
638 | *where = '\0'; | |
639 | return; | |
640 | } | |
594aa066 | 641 | \f |
3d23b985 RS |
642 | /* Read lines from the input until we get a blank line. |
643 | Create a list of `header' objects, one for each header field, | |
644 | each of which points to a list of `line_list' objects, | |
645 | one for each line in that field. | |
646 | Continuation lines are grouped in the headers they continue. */ | |
594aa066 | 647 | |
6b3ee98a RS |
648 | header |
649 | read_header () | |
650 | { | |
651 | register header the_header = ((header) NULL); | |
652 | register line_list *next_line = ((line_list *) NULL); | |
653 | ||
654 | init_linebuffer (&lb); | |
655 | ||
656 | do | |
657 | { | |
658 | long length; | |
659 | register char *line; | |
660 | ||
661 | readline (&lb, stdin); | |
662 | line = lb.buffer; | |
663 | length = strlen (line); | |
664 | if (length == 0) break; | |
665 | ||
666 | if (has_keyword (line)) | |
667 | { | |
668 | register header old = the_header; | |
669 | the_header = new_header (); | |
670 | if (old == ((header) NULL)) | |
671 | { | |
672 | the_header->next = the_header; | |
673 | the_header->previous = the_header; | |
674 | } | |
675 | else | |
676 | { | |
677 | the_header->previous = old; | |
678 | the_header->next = old->next; | |
679 | old->next = the_header; | |
680 | } | |
681 | next_line = &(the_header->text); | |
682 | } | |
683 | ||
684 | if (next_line == ((line_list *) NULL)) | |
685 | { | |
686 | /* Not a valid header */ | |
65396510 | 687 | exit (EXIT_FAILURE); |
6b3ee98a RS |
688 | } |
689 | *next_line = new_list (); | |
690 | (*next_line)->string = alloc_string (length); | |
691 | strcpy (((*next_line)->string), line); | |
692 | next_line = &((*next_line)->continuation); | |
693 | *next_line = NIL; | |
694 | ||
695 | } while (true); | |
696 | ||
2ef88a94 RS |
697 | if (! the_header) |
698 | fatal ("input message has no header"); | |
6b3ee98a RS |
699 | return the_header->next; |
700 | } | |
701 | \f | |
702 | void | |
703 | write_header (the_header) | |
704 | header the_header; | |
705 | { | |
706 | register header old = the_header; | |
707 | do | |
708 | { | |
709 | register line_list the_list; | |
710 | for (the_list = the_header->text; | |
711 | the_list != NIL; | |
712 | the_list = the_list->continuation) | |
713 | put_line (the_list->string); | |
714 | the_header = the_header->next; | |
715 | } while (the_header != old); | |
716 | put_line (""); | |
717 | return; | |
718 | } | |
719 | \f | |
d0dff6e5 | 720 | int |
6b3ee98a RS |
721 | main (argc, argv) |
722 | int argc; | |
723 | char **argv; | |
724 | { | |
725 | char *command_line; | |
726 | header the_header; | |
727 | long name_length; | |
728 | char *mail_program_name; | |
729 | char buf[BUFLEN + 1]; | |
730 | register int size; | |
731 | FILE *the_pipe; | |
732 | ||
733 | extern char *getenv (); | |
734 | ||
735 | mail_program_name = getenv ("FAKEMAILER"); | |
736 | if (!(mail_program_name && *mail_program_name)) | |
737 | mail_program_name = MAIL_PROGRAM_NAME; | |
738 | name_length = strlen (mail_program_name); | |
739 | ||
740 | my_name = MY_NAME; | |
741 | the_streams = ((stream_list) NULL); | |
742 | the_date = ((char *) NULL); | |
743 | the_user = ((char *) NULL); | |
744 | ||
745 | the_header = read_header (); | |
746 | command_line = alloc_string (name_length + args_size (the_header)); | |
747 | strcpy (command_line, mail_program_name); | |
748 | parse_header (the_header, &command_line[name_length]); | |
594aa066 | 749 | |
6b3ee98a RS |
750 | the_pipe = popen (command_line, "w"); |
751 | if (the_pipe == ((FILE *) NULL)) | |
752 | fatal ("cannot open pipe to real mailer"); | |
753 | ||
754 | add_a_stream (the_pipe, pclose); | |
755 | ||
756 | write_header (the_header); | |
757 | ||
758 | /* Dump the message itself */ | |
759 | ||
760 | while (!feof (stdin)) | |
761 | { | |
762 | size = fread (buf, 1, BUFLEN, stdin); | |
763 | buf[size] = '\0'; | |
764 | put_string (buf); | |
765 | } | |
766 | ||
767 | exit (close_the_streams ()); | |
768 | } | |
769 | ||
26528bbc | 770 | #endif /* not MSDOS */ |
6b3ee98a | 771 | #endif /* not BSD 4.2 (or newer) */ |
ab5796a9 MB |
772 | |
773 | /* arch-tag: acb0afa6-315a-4c5b-b9e3-def5725c8783 | |
774 | (do not change this comment) */ | |
65396510 TTN |
775 | |
776 | /* fakemail.c ends here */ |