Commit | Line | Data |
---|---|---|
6b3ee98a | 1 | /* sendmail-like interface to /bin/mail for system V, |
73b0cd50 | 2 | Copyright (C) 1985, 1994, 1999, 2001-2011 Free Software Foundation, Inc. |
6b3ee98a | 3 | |
c3fba29d GM |
4 | Author: Bill Rozas <jinx@martigny.ai.mit.edu> |
5 | (according to ack.texi) | |
6 | ||
6b3ee98a RS |
7 | This file is part of GNU Emacs. |
8 | ||
294981c7 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
518dd722 | 10 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
518dd722 | 13 | |
6b3ee98a | 14 | GNU Emacs is distributed in the hope that it will be useful, |
518dd722 JB |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
294981c7 GM |
20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
21 | ||
6b3ee98a | 22 | |
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 | |
f2a77c3a | 29 | #if defined (BSD_SYSTEM) && !defined (USE_FAKEMAIL) |
6b3ee98a | 30 | /* This program isnot used in BSD, so just avoid loader complaints. */ |
d0dff6e5 | 31 | int |
988e88ab | 32 | main (void) |
6b3ee98a | 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> | |
5e3b9a89 | 61 | #include <stdlib.h> |
7543028e RS |
62 | |
63 | /* This is to declare cuserid. */ | |
7543028e | 64 | #include <unistd.h> |
6b3ee98a RS |
65 | \f |
66 | /* Type definitions */ | |
67 | ||
68 | #define boolean int | |
69 | #define true 1 | |
70 | #define false 0 | |
71 | ||
d65b4235 PE |
72 | #define TM_YEAR_BASE 1900 |
73 | ||
74 | /* Nonzero if TM_YEAR is a struct tm's tm_year value that causes | |
75 | asctime to have well-defined behavior. */ | |
76 | #ifndef TM_YEAR_IN_ASCTIME_RANGE | |
f5565804 | 77 | # define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \ |
d65b4235 | 78 | (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE) |
f5565804 PE |
79 | #endif |
80 | ||
6b3ee98a RS |
81 | /* Various lists */ |
82 | ||
83 | struct line_record | |
84 | { | |
85 | char *string; | |
86 | struct line_record *continuation; | |
87 | }; | |
88 | typedef struct line_record *line_list; | |
89 | ||
90 | struct header_record | |
91 | { | |
92 | line_list text; | |
93 | struct header_record *next; | |
94 | struct header_record *previous; | |
95 | }; | |
96 | typedef struct header_record *header; | |
594aa066 | 97 | |
6b3ee98a RS |
98 | struct stream_record |
99 | { | |
100 | FILE *handle; | |
b8463cbf | 101 | int (*action)(FILE *); |
6b3ee98a RS |
102 | struct stream_record *rest_streams; |
103 | }; | |
104 | typedef struct stream_record *stream_list; | |
105 | ||
106 | /* A `struct linebuffer' is a structure which holds a line of text. | |
107 | * `readline' reads a line from a stream into a linebuffer | |
108 | * and works regardless of the length of the line. | |
109 | */ | |
110 | ||
111 | struct linebuffer | |
112 | { | |
113 | long size; | |
114 | char *buffer; | |
115 | }; | |
116 | ||
117 | struct linebuffer lb; | |
118 | ||
119 | #define new_list() \ | |
120 | ((line_list) xmalloc (sizeof (struct line_record))) | |
121 | #define new_header() \ | |
122 | ((header) xmalloc (sizeof (struct header_record))) | |
123 | #define new_stream() \ | |
124 | ((stream_list) xmalloc (sizeof (struct stream_record))) | |
125 | #define alloc_string(nchars) \ | |
126 | ((char *) xmalloc ((nchars) + 1)) | |
127 | \f | |
128 | /* Global declarations */ | |
129 | ||
130 | #define BUFLEN 1024 | |
131 | #define KEYWORD_SIZE 256 | |
132 | #define FROM_PREFIX "From" | |
133 | #define MY_NAME "fakemail" | |
134 | #define NIL ((line_list) NULL) | |
135 | #define INITIAL_LINE_SIZE 200 | |
136 | ||
45c1955d DN |
137 | #ifndef MAIL_PROGRAM_NAME |
138 | #define MAIL_PROGRAM_NAME "/bin/mail" | |
139 | #endif | |
140 | ||
5e3b9a89 | 141 | static const char *my_name; |
6b3ee98a RS |
142 | static char *the_date; |
143 | static char *the_user; | |
144 | static line_list file_preface; | |
145 | static stream_list the_streams; | |
146 | static boolean no_problems = true; | |
147 | ||
5e3b9a89 | 148 | static void fatal (const char *s1) NO_RETURN; |
6b3ee98a RS |
149 | |
150 | #ifdef CURRENT_USER | |
6b3ee98a RS |
151 | static struct passwd *my_entry; |
152 | #define cuserid(s) \ | |
153 | (my_entry = getpwuid (((int) geteuid ())), \ | |
154 | my_entry->pw_name) | |
155 | #endif | |
156 | \f | |
157 | /* Utilities */ | |
158 | ||
159 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
160 | ||
161 | static void | |
5e3b9a89 | 162 | error (const char *s1, const char *s2) |
6b3ee98a RS |
163 | { |
164 | printf ("%s: ", my_name); | |
165 | printf (s1, s2); | |
166 | printf ("\n"); | |
167 | no_problems = false; | |
168 | } | |
169 | ||
170 | /* Print error message and exit. */ | |
171 | ||
172 | static void | |
5e3b9a89 | 173 | fatal (const char *s1) |
6b3ee98a | 174 | { |
5a84ed33 | 175 | error ("%s", s1); |
65396510 | 176 | exit (EXIT_FAILURE); |
6b3ee98a RS |
177 | } |
178 | ||
179 | /* Like malloc but get fatal error if memory is exhausted. */ | |
180 | ||
cd52b244 PE |
181 | static void * |
182 | xmalloc (size_t size) | |
6b3ee98a | 183 | { |
cd52b244 PE |
184 | void *result = malloc (size); |
185 | if (! result) | |
5a84ed33 | 186 | fatal ("virtual memory exhausted"); |
6b3ee98a RS |
187 | return result; |
188 | } | |
189 | ||
cd52b244 PE |
190 | static void * |
191 | xrealloc (void *ptr, size_t size) | |
6b3ee98a | 192 | { |
cd52b244 PE |
193 | void *result = realloc (ptr, size); |
194 | if (! result) | |
6b3ee98a RS |
195 | fatal ("virtual memory exhausted"); |
196 | return result; | |
197 | } | |
198 | \f | |
199 | /* Initialize a linebuffer for use */ | |
200 | ||
b23b5a5b | 201 | static void |
873fbd0b | 202 | init_linebuffer (struct linebuffer *linebuffer) |
6b3ee98a RS |
203 | { |
204 | linebuffer->size = INITIAL_LINE_SIZE; | |
205 | linebuffer->buffer = ((char *) xmalloc (INITIAL_LINE_SIZE)); | |
206 | } | |
207 | ||
208 | /* Read a line of text from `stream' into `linebuffer'. | |
594aa066 | 209 | Return the length of the line. */ |
6b3ee98a | 210 | |
b23b5a5b | 211 | static long |
873fbd0b | 212 | readline (struct linebuffer *linebuffer, FILE *stream) |
6b3ee98a RS |
213 | { |
214 | char *buffer = linebuffer->buffer; | |
215 | char *p = linebuffer->buffer; | |
216 | char *end = p + linebuffer->size; | |
217 | ||
218 | while (true) | |
219 | { | |
220 | int c = getc (stream); | |
221 | if (p == end) | |
222 | { | |
223 | linebuffer->size *= 2; | |
cd52b244 | 224 | buffer = (char *) xrealloc (buffer, linebuffer->size); |
f3309b68 | 225 | p = buffer + (p - linebuffer->buffer); |
1ddb6978 | 226 | end = buffer + linebuffer->size; |
6b3ee98a RS |
227 | linebuffer->buffer = buffer; |
228 | } | |
229 | if (c < 0 || c == '\n') | |
230 | { | |
231 | *p = 0; | |
232 | break; | |
233 | } | |
234 | *p++ = c; | |
235 | } | |
236 | ||
237 | return p - buffer; | |
238 | } | |
239 | \f | |
3d23b985 RS |
240 | /* Extract a colon-terminated keyword from the string FIELD. |
241 | Return that keyword as a string stored in a static buffer. | |
242 | Store the address of the rest of the string into *REST. | |
243 | ||
244 | If there is no keyword, return NULL and don't alter *REST. */ | |
245 | ||
b23b5a5b | 246 | static char * |
873fbd0b | 247 | get_keyword (register char *field, char **rest) |
6b3ee98a RS |
248 | { |
249 | static char keyword[KEYWORD_SIZE]; | |
250 | register char *ptr; | |
859cbb40 | 251 | register int c; |
6b3ee98a RS |
252 | |
253 | ptr = &keyword[0]; | |
859cbb40 | 254 | c = (unsigned char) *field++; |
3d23b985 | 255 | if (isspace (c) || c == ':') |
6b3ee98a | 256 | return ((char *) NULL); |
3d23b985 | 257 | *ptr++ = (islower (c) ? toupper (c) : c); |
859cbb40 | 258 | while (((c = (unsigned char) *field++) != ':') && ! isspace (c)) |
3d23b985 | 259 | *ptr++ = (islower (c) ? toupper (c) : c); |
6b3ee98a | 260 | *ptr++ = '\0'; |
3d23b985 | 261 | while (isspace (c)) |
859cbb40 | 262 | c = (unsigned char) *field++; |
3d23b985 RS |
263 | if (c != ':') |
264 | return ((char *) NULL); | |
6b3ee98a RS |
265 | *rest = field; |
266 | return &keyword[0]; | |
267 | } | |
268 | ||
3d23b985 RS |
269 | /* Nonzero if the string FIELD starts with a colon-terminated keyword. */ |
270 | ||
b23b5a5b | 271 | static boolean |
873fbd0b | 272 | has_keyword (char *field) |
6b3ee98a RS |
273 | { |
274 | char *ignored; | |
275 | return (get_keyword (field, &ignored) != ((char *) NULL)); | |
276 | } | |
277 | ||
3d23b985 RS |
278 | /* Store the string FIELD, followed by any lines in THE_LIST, |
279 | into the buffer WHERE. | |
280 | Concatenate lines, putting just a space between them. | |
281 | Delete everything contained in parentheses. | |
282 | When a recipient name contains <...>, we discard | |
283 | everything except what is inside the <...>. | |
284 | ||
285 | We don't pay attention to overflowing WHERE; | |
286 | the caller has to make it big enough. */ | |
287 | ||
b23b5a5b | 288 | static char * |
873fbd0b | 289 | add_field (line_list the_list, register char *field, register char *where) |
6b3ee98a RS |
290 | { |
291 | register char c; | |
292 | while (true) | |
293 | { | |
3d23b985 RS |
294 | char *this_recipient_where; |
295 | int in_quotes = 0; | |
296 | ||
6b3ee98a | 297 | *where++ = ' '; |
3d23b985 RS |
298 | this_recipient_where = where; |
299 | ||
6b3ee98a RS |
300 | while ((c = *field++) != '\0') |
301 | { | |
3d23b985 RS |
302 | if (c == '\\') |
303 | *where++ = c; | |
304 | else if (c == '"') | |
305 | { | |
306 | in_quotes = ! in_quotes; | |
307 | *where++ = c; | |
308 | } | |
309 | else if (in_quotes) | |
310 | *where++ = c; | |
311 | else if (c == '(') | |
6b3ee98a RS |
312 | { |
313 | while (*field && *field != ')') ++field; | |
3d23b985 RS |
314 | if (! (*field++)) break; /* no close */ |
315 | continue; | |
6b3ee98a | 316 | } |
3d23b985 RS |
317 | else if (c == ',') |
318 | { | |
319 | *where++ = ' '; | |
320 | /* When we get to the end of one recipient, | |
321 | don't discard it if the next one has <...>. */ | |
322 | this_recipient_where = where; | |
323 | } | |
324 | else if (c == '<') | |
325 | /* Discard everything we got before the `<'. */ | |
326 | where = this_recipient_where; | |
327 | else if (c == '>') | |
328 | /* Discard the rest of this name that follows the `>'. */ | |
329 | { | |
330 | while (*field && *field != ',') ++field; | |
331 | if (! (*field++)) break; /* no comma */ | |
332 | continue; | |
333 | } | |
334 | else | |
335 | *where++ = c; | |
6b3ee98a RS |
336 | } |
337 | if (the_list == NIL) break; | |
338 | field = the_list->string; | |
339 | the_list = the_list->continuation; | |
340 | } | |
341 | return where; | |
342 | } | |
343 | \f | |
b23b5a5b | 344 | static line_list |
873fbd0b | 345 | make_file_preface (void) |
6b3ee98a RS |
346 | { |
347 | char *the_string, *temp; | |
348 | long idiotic_interface; | |
f5565804 | 349 | struct tm *tm; |
6b3ee98a RS |
350 | long prefix_length; |
351 | long user_length; | |
352 | long date_length; | |
353 | line_list result; | |
354 | ||
355 | prefix_length = strlen (FROM_PREFIX); | |
356 | time (&idiotic_interface); | |
f5565804 PE |
357 | /* Convert to a string, checking for out-of-range time stamps. |
358 | Don't use 'ctime', as that might dump core if the hardware clock | |
359 | is set to a bizarre value. */ | |
360 | tm = localtime (&idiotic_interface); | |
d65b4235 PE |
361 | if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year) |
362 | && (the_date = asctime (tm)))) | |
5a84ed33 | 363 | fatal ("current time is out of range"); |
6b3ee98a RS |
364 | /* the_date has an unwanted newline at the end */ |
365 | date_length = strlen (the_date) - 1; | |
366 | the_date[date_length] = '\0'; | |
367 | temp = cuserid ((char *) NULL); | |
368 | user_length = strlen (temp); | |
369 | the_user = alloc_string (user_length + 1); | |
370 | strcpy (the_user, temp); | |
7543028e RS |
371 | the_string = alloc_string (3 + prefix_length |
372 | + user_length | |
373 | + date_length); | |
6b3ee98a RS |
374 | temp = the_string; |
375 | strcpy (temp, FROM_PREFIX); | |
376 | temp = &temp[prefix_length]; | |
377 | *temp++ = ' '; | |
378 | strcpy (temp, the_user); | |
379 | temp = &temp[user_length]; | |
380 | *temp++ = ' '; | |
381 | strcpy (temp, the_date); | |
382 | result = new_list (); | |
383 | result->string = the_string; | |
384 | result->continuation = ((line_list) NULL); | |
385 | return result; | |
386 | } | |
387 | ||
b23b5a5b | 388 | static void |
873fbd0b | 389 | write_line_list (register line_list the_list, FILE *the_stream) |
6b3ee98a RS |
390 | { |
391 | for ( ; | |
392 | the_list != ((line_list) NULL) ; | |
393 | the_list = the_list->continuation) | |
394 | { | |
395 | fputs (the_list->string, the_stream); | |
396 | putc ('\n', the_stream); | |
397 | } | |
398 | return; | |
399 | } | |
400 | \f | |
b23b5a5b | 401 | static int |
873fbd0b | 402 | close_the_streams (void) |
6b3ee98a RS |
403 | { |
404 | register stream_list rem; | |
405 | for (rem = the_streams; | |
406 | rem != ((stream_list) NULL); | |
407 | rem = rem->rest_streams) | |
a4fe4e89 PE |
408 | if (no_problems && (*rem->action) (rem->handle) != 0) |
409 | error ("output error", NULL); | |
6b3ee98a | 410 | the_streams = ((stream_list) NULL); |
65396510 | 411 | return (no_problems ? EXIT_SUCCESS : EXIT_FAILURE); |
6b3ee98a RS |
412 | } |
413 | ||
b23b5a5b | 414 | static void |
b8463cbf | 415 | add_a_stream (FILE *the_stream, int (*closing_action) (FILE *)) |
6b3ee98a RS |
416 | { |
417 | stream_list old = the_streams; | |
418 | the_streams = new_stream (); | |
419 | the_streams->handle = the_stream; | |
420 | the_streams->action = closing_action; | |
421 | the_streams->rest_streams = old; | |
422 | return; | |
423 | } | |
424 | ||
b23b5a5b | 425 | static int |
873fbd0b | 426 | my_fclose (FILE *the_file) |
6b3ee98a RS |
427 | { |
428 | putc ('\n', the_file); | |
429 | fflush (the_file); | |
a4fe4e89 PE |
430 | if (ferror (the_file)) |
431 | return EOF; | |
6b3ee98a RS |
432 | return fclose (the_file); |
433 | } | |
434 | ||
b23b5a5b | 435 | static boolean |
873fbd0b | 436 | open_a_file (char *name) |
6b3ee98a RS |
437 | { |
438 | FILE *the_stream = fopen (name, "a"); | |
439 | if (the_stream != ((FILE *) NULL)) | |
440 | { | |
441 | add_a_stream (the_stream, my_fclose); | |
442 | if (the_user == ((char *) NULL)) | |
443 | file_preface = make_file_preface (); | |
444 | write_line_list (file_preface, the_stream); | |
445 | return true; | |
446 | } | |
447 | return false; | |
448 | } | |
449 | ||
b23b5a5b | 450 | static void |
873fbd0b | 451 | put_string (char *s) |
6b3ee98a RS |
452 | { |
453 | register stream_list rem; | |
454 | for (rem = the_streams; | |
455 | rem != ((stream_list) NULL); | |
456 | rem = rem->rest_streams) | |
457 | fputs (s, rem->handle); | |
458 | return; | |
459 | } | |
460 | ||
b23b5a5b | 461 | static void |
5e3b9a89 | 462 | put_line (const char *string) |
6b3ee98a RS |
463 | { |
464 | register stream_list rem; | |
465 | for (rem = the_streams; | |
466 | rem != ((stream_list) NULL); | |
467 | rem = rem->rest_streams) | |
468 | { | |
5e3b9a89 | 469 | const char *s = string; |
a492a5b9 RS |
470 | int column = 0; |
471 | ||
472 | /* Divide STRING into lines. */ | |
473 | while (*s != 0) | |
474 | { | |
5e3b9a89 | 475 | const char *breakpos; |
a492a5b9 | 476 | |
fbffe7d9 | 477 | /* Find the last char that fits. */ |
a492a5b9 RS |
478 | for (breakpos = s; *breakpos && column < 78; ++breakpos) |
479 | { | |
480 | if (*breakpos == '\t') | |
481 | column += 8; | |
482 | else | |
483 | column++; | |
484 | } | |
fbffe7d9 RS |
485 | /* If we didn't reach end of line, break the line. */ |
486 | if (*breakpos) | |
a492a5b9 | 487 | { |
fbffe7d9 RS |
488 | /* Back up to just after the last comma that fits. */ |
489 | while (breakpos != s && breakpos[-1] != ',') --breakpos; | |
490 | ||
491 | if (breakpos == s) | |
492 | { | |
493 | /* If no comma fits, move past the first address anyway. */ | |
494 | while (*breakpos != 0 && *breakpos != ',') ++breakpos; | |
495 | if (*breakpos != 0) | |
496 | /* Include the comma after it. */ | |
497 | ++breakpos; | |
498 | } | |
a492a5b9 RS |
499 | } |
500 | /* Output that much, then break the line. */ | |
d5cad867 | 501 | fwrite (s, 1, breakpos - s, rem->handle); |
a492a5b9 RS |
502 | column = 8; |
503 | ||
504 | /* Skip whitespace and prepare to print more addresses. */ | |
505 | s = breakpos; | |
506 | while (*s == ' ' || *s == '\t') ++s; | |
c1380f31 RS |
507 | if (*s != 0) |
508 | fputs ("\n\t", rem->handle); | |
a492a5b9 | 509 | } |
6b3ee98a RS |
510 | putc ('\n', rem->handle); |
511 | } | |
512 | return; | |
513 | } | |
514 | \f | |
515 | #define mail_error error | |
516 | ||
3d23b985 RS |
517 | /* Handle an FCC field. FIELD is the text of the first line (after |
518 | the header name), and THE_LIST holds the continuation lines if any. | |
519 | Call open_a_file for each file. */ | |
520 | ||
b23b5a5b | 521 | static void |
873fbd0b | 522 | setup_files (register line_list the_list, register char *field) |
6b3ee98a RS |
523 | { |
524 | register char *start; | |
525 | register char c; | |
526 | while (true) | |
527 | { | |
3d23b985 RS |
528 | while (((c = *field) != '\0') |
529 | && (c == ' ' | |
530 | || c == '\t' | |
531 | || c == ',')) | |
6b3ee98a RS |
532 | field += 1; |
533 | if (c != '\0') | |
534 | { | |
535 | start = field; | |
3d23b985 RS |
536 | while (((c = *field) != '\0') |
537 | && c != ' ' | |
538 | && c != '\t' | |
539 | && c != ',') | |
6b3ee98a RS |
540 | field += 1; |
541 | *field = '\0'; | |
542 | if (!open_a_file (start)) | |
543 | mail_error ("Could not open file %s", start); | |
544 | *field = c; | |
545 | if (c != '\0') continue; | |
546 | } | |
3d23b985 RS |
547 | if (the_list == ((line_list) NULL)) |
548 | return; | |
6b3ee98a RS |
549 | field = the_list->string; |
550 | the_list = the_list->continuation; | |
551 | } | |
552 | } | |
553 | \f | |
3d23b985 RS |
554 | /* Compute the total size of all recipient names stored in THE_HEADER. |
555 | The result says how big to make the buffer to pass to parse_header. */ | |
556 | ||
b23b5a5b | 557 | static int |
873fbd0b | 558 | args_size (header the_header) |
6b3ee98a RS |
559 | { |
560 | register header old = the_header; | |
561 | register line_list rem; | |
562 | register int size = 0; | |
563 | do | |
564 | { | |
565 | char *field; | |
566 | register char *keyword = get_keyword (the_header->text->string, &field); | |
3d23b985 RS |
567 | if ((strcmp (keyword, "TO") == 0) |
568 | || (strcmp (keyword, "CC") == 0) | |
569 | || (strcmp (keyword, "BCC") == 0)) | |
6b3ee98a RS |
570 | { |
571 | size += 1 + strlen (field); | |
572 | for (rem = the_header->text->continuation; | |
573 | rem != NIL; | |
574 | rem = rem->continuation) | |
575 | size += 1 + strlen (rem->string); | |
576 | } | |
577 | the_header = the_header->next; | |
578 | } while (the_header != old); | |
579 | return size; | |
580 | } | |
581 | ||
3d23b985 RS |
582 | /* Scan the header described by the lists THE_HEADER, |
583 | and put all recipient names into the buffer WHERE. | |
584 | Precede each recipient name with a space. | |
585 | ||
586 | Also, if the header has any FCC fields, call setup_files for each one. */ | |
587 | ||
b23b5a5b | 588 | static void |
873fbd0b | 589 | parse_header (header the_header, register char *where) |
6b3ee98a RS |
590 | { |
591 | register header old = the_header; | |
592 | do | |
593 | { | |
594 | char *field; | |
595 | register char *keyword = get_keyword (the_header->text->string, &field); | |
596 | if (strcmp (keyword, "TO") == 0) | |
597 | where = add_field (the_header->text->continuation, field, where); | |
598 | else if (strcmp (keyword, "CC") == 0) | |
599 | where = add_field (the_header->text->continuation, field, where); | |
600 | else if (strcmp (keyword, "BCC") == 0) | |
601 | { | |
602 | where = add_field (the_header->text->continuation, field, where); | |
603 | the_header->previous->next = the_header->next; | |
604 | the_header->next->previous = the_header->previous; | |
605 | } | |
606 | else if (strcmp (keyword, "FCC") == 0) | |
607 | setup_files (the_header->text->continuation, field); | |
608 | the_header = the_header->next; | |
609 | } while (the_header != old); | |
610 | *where = '\0'; | |
611 | return; | |
612 | } | |
594aa066 | 613 | \f |
3d23b985 RS |
614 | /* Read lines from the input until we get a blank line. |
615 | Create a list of `header' objects, one for each header field, | |
616 | each of which points to a list of `line_list' objects, | |
617 | one for each line in that field. | |
618 | Continuation lines are grouped in the headers they continue. */ | |
594aa066 | 619 | |
b23b5a5b | 620 | static header |
873fbd0b | 621 | read_header (void) |
6b3ee98a RS |
622 | { |
623 | register header the_header = ((header) NULL); | |
624 | register line_list *next_line = ((line_list *) NULL); | |
625 | ||
626 | init_linebuffer (&lb); | |
627 | ||
628 | do | |
629 | { | |
630 | long length; | |
631 | register char *line; | |
632 | ||
633 | readline (&lb, stdin); | |
634 | line = lb.buffer; | |
635 | length = strlen (line); | |
636 | if (length == 0) break; | |
637 | ||
638 | if (has_keyword (line)) | |
639 | { | |
640 | register header old = the_header; | |
641 | the_header = new_header (); | |
642 | if (old == ((header) NULL)) | |
643 | { | |
644 | the_header->next = the_header; | |
645 | the_header->previous = the_header; | |
646 | } | |
647 | else | |
648 | { | |
649 | the_header->previous = old; | |
650 | the_header->next = old->next; | |
651 | old->next = the_header; | |
652 | } | |
653 | next_line = &(the_header->text); | |
654 | } | |
655 | ||
656 | if (next_line == ((line_list *) NULL)) | |
657 | { | |
658 | /* Not a valid header */ | |
65396510 | 659 | exit (EXIT_FAILURE); |
6b3ee98a RS |
660 | } |
661 | *next_line = new_list (); | |
662 | (*next_line)->string = alloc_string (length); | |
663 | strcpy (((*next_line)->string), line); | |
664 | next_line = &((*next_line)->continuation); | |
665 | *next_line = NIL; | |
666 | ||
667 | } while (true); | |
668 | ||
2ef88a94 RS |
669 | if (! the_header) |
670 | fatal ("input message has no header"); | |
6b3ee98a RS |
671 | return the_header->next; |
672 | } | |
673 | \f | |
b23b5a5b | 674 | static void |
873fbd0b | 675 | write_header (header the_header) |
6b3ee98a RS |
676 | { |
677 | register header old = the_header; | |
678 | do | |
679 | { | |
680 | register line_list the_list; | |
681 | for (the_list = the_header->text; | |
682 | the_list != NIL; | |
683 | the_list = the_list->continuation) | |
684 | put_line (the_list->string); | |
685 | the_header = the_header->next; | |
686 | } while (the_header != old); | |
687 | put_line (""); | |
688 | return; | |
689 | } | |
690 | \f | |
d0dff6e5 | 691 | int |
873fbd0b | 692 | main (int argc, char **argv) |
6b3ee98a RS |
693 | { |
694 | char *command_line; | |
695 | header the_header; | |
696 | long name_length; | |
5e3b9a89 | 697 | const char *mail_program_name; |
6b3ee98a RS |
698 | char buf[BUFLEN + 1]; |
699 | register int size; | |
700 | FILE *the_pipe; | |
701 | ||
6b3ee98a RS |
702 | mail_program_name = getenv ("FAKEMAILER"); |
703 | if (!(mail_program_name && *mail_program_name)) | |
45c1955d | 704 | mail_program_name = MAIL_PROGRAM_NAME; |
6b3ee98a RS |
705 | name_length = strlen (mail_program_name); |
706 | ||
707 | my_name = MY_NAME; | |
708 | the_streams = ((stream_list) NULL); | |
709 | the_date = ((char *) NULL); | |
710 | the_user = ((char *) NULL); | |
711 | ||
712 | the_header = read_header (); | |
713 | command_line = alloc_string (name_length + args_size (the_header)); | |
714 | strcpy (command_line, mail_program_name); | |
715 | parse_header (the_header, &command_line[name_length]); | |
594aa066 | 716 | |
6b3ee98a RS |
717 | the_pipe = popen (command_line, "w"); |
718 | if (the_pipe == ((FILE *) NULL)) | |
719 | fatal ("cannot open pipe to real mailer"); | |
720 | ||
721 | add_a_stream (the_pipe, pclose); | |
722 | ||
723 | write_header (the_header); | |
724 | ||
725 | /* Dump the message itself */ | |
726 | ||
727 | while (!feof (stdin)) | |
728 | { | |
729 | size = fread (buf, 1, BUFLEN, stdin); | |
730 | buf[size] = '\0'; | |
731 | put_string (buf); | |
732 | } | |
733 | ||
a4fe4e89 PE |
734 | if (no_problems && (ferror (stdin) || fclose (stdin) != 0)) |
735 | error ("input error", NULL); | |
736 | ||
6b3ee98a RS |
737 | exit (close_the_streams ()); |
738 | } | |
739 | ||
26528bbc | 740 | #endif /* not MSDOS */ |
6b3ee98a | 741 | #endif /* not BSD 4.2 (or newer) */ |
ab5796a9 | 742 | |
65396510 TTN |
743 | |
744 | /* fakemail.c ends here */ |