Commit | Line | Data |
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6b3ee98a | 1 | /* sendmail-like interface to /bin/mail for system V, |
b3d90e46 | 2 | Copyright (C) 1985, 1994, 1999, 2001, 2002, 2003, 2004, |
5df4f04c | 3 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
6b3ee98a | 4 | |
c3fba29d GM |
5 | Author: Bill Rozas <jinx@martigny.ai.mit.edu> |
6 | (according to ack.texi) | |
7 | ||
6b3ee98a RS |
8 | This file is part of GNU Emacs. |
9 | ||
294981c7 | 10 | GNU Emacs is free software: you can redistribute it and/or modify |
518dd722 | 11 | it under the terms of the GNU General Public License as published by |
294981c7 GM |
12 | the Free Software Foundation, either version 3 of the License, or |
13 | (at your option) any later version. | |
518dd722 | 14 | |
6b3ee98a | 15 | GNU Emacs is distributed in the hope that it will be useful, |
518dd722 JB |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
294981c7 GM |
21 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
22 | ||
6b3ee98a | 23 | |
a33c19b1 | 24 | #define _XOPEN_SOURCE 500 /* for cuserid */ |
594aa066 PJ |
25 | |
26 | #ifdef HAVE_CONFIG_H | |
4838e624 | 27 | #include <config.h> |
594aa066 | 28 | #endif |
6b3ee98a | 29 | |
f2a77c3a | 30 | #if defined (BSD_SYSTEM) && !defined (USE_FAKEMAIL) |
6b3ee98a | 31 | /* This program isnot used in BSD, so just avoid loader complaints. */ |
d0dff6e5 | 32 | int |
988e88ab | 33 | main (void) |
6b3ee98a | 34 | { |
0d1841a6 | 35 | return 0; |
6b3ee98a RS |
36 | } |
37 | #else /* not BSD 4.2 (or newer) */ | |
26528bbc | 38 | #ifdef MSDOS |
d0dff6e5 | 39 | int |
26528bbc RS |
40 | main () |
41 | { | |
0d1841a6 | 42 | return 0; |
26528bbc RS |
43 | } |
44 | #else /* not MSDOS */ | |
6b3ee98a RS |
45 | /* This conditional contains all the rest of the file. */ |
46 | ||
47 | /* These are defined in config in some versions. */ | |
48 | ||
49 | #ifdef static | |
50 | #undef static | |
51 | #endif | |
52 | ||
7c544420 RS |
53 | #ifdef WINDOWSNT |
54 | #include "ntlib.h" | |
55 | #endif | |
56 | ||
6b3ee98a RS |
57 | #include <stdio.h> |
58 | #include <string.h> | |
59 | #include <ctype.h> | |
60 | #include <time.h> | |
61 | #include <pwd.h> | |
5e3b9a89 | 62 | #include <stdlib.h> |
7543028e RS |
63 | |
64 | /* This is to declare cuserid. */ | |
7543028e | 65 | #include <unistd.h> |
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; | |
b8463cbf | 102 | int (*action)(FILE *); |
6b3ee98a RS |
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 | ||
45c1955d DN |
138 | #ifndef MAIL_PROGRAM_NAME |
139 | #define MAIL_PROGRAM_NAME "/bin/mail" | |
140 | #endif | |
141 | ||
5e3b9a89 | 142 | static const char *my_name; |
6b3ee98a RS |
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 | ||
5e3b9a89 | 149 | static void fatal (const char *s1) NO_RETURN; |
6b3ee98a RS |
150 | |
151 | #ifdef CURRENT_USER | |
6b3ee98a RS |
152 | static struct passwd *my_entry; |
153 | #define cuserid(s) \ | |
154 | (my_entry = getpwuid (((int) geteuid ())), \ | |
155 | my_entry->pw_name) | |
156 | #endif | |
157 | \f | |
158 | /* Utilities */ | |
159 | ||
160 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
161 | ||
162 | static void | |
5e3b9a89 | 163 | error (const char *s1, const char *s2) |
6b3ee98a RS |
164 | { |
165 | printf ("%s: ", my_name); | |
166 | printf (s1, s2); | |
167 | printf ("\n"); | |
168 | no_problems = false; | |
169 | } | |
170 | ||
171 | /* Print error message and exit. */ | |
172 | ||
173 | static void | |
5e3b9a89 | 174 | fatal (const char *s1) |
6b3ee98a | 175 | { |
5a84ed33 | 176 | error ("%s", s1); |
65396510 | 177 | exit (EXIT_FAILURE); |
6b3ee98a RS |
178 | } |
179 | ||
180 | /* Like malloc but get fatal error if memory is exhausted. */ | |
181 | ||
65119039 | 182 | static long * |
873fbd0b | 183 | xmalloc (int size) |
6b3ee98a | 184 | { |
65119039 RS |
185 | long *result = (long *) malloc (((unsigned) size)); |
186 | if (result == ((long *) NULL)) | |
5a84ed33 | 187 | fatal ("virtual memory exhausted"); |
6b3ee98a RS |
188 | return result; |
189 | } | |
190 | ||
65119039 | 191 | static long * |
873fbd0b | 192 | xrealloc (long int *ptr, int size) |
6b3ee98a | 193 | { |
65119039 | 194 | long *result = (long *) realloc (ptr, ((unsigned) size)); |
5391a863 | 195 | if (result == ((long *) NULL)) |
6b3ee98a RS |
196 | fatal ("virtual memory exhausted"); |
197 | return result; | |
198 | } | |
199 | \f | |
200 | /* Initialize a linebuffer for use */ | |
201 | ||
202 | void | |
873fbd0b | 203 | init_linebuffer (struct linebuffer *linebuffer) |
6b3ee98a RS |
204 | { |
205 | linebuffer->size = INITIAL_LINE_SIZE; | |
206 | linebuffer->buffer = ((char *) xmalloc (INITIAL_LINE_SIZE)); | |
207 | } | |
208 | ||
209 | /* Read a line of text from `stream' into `linebuffer'. | |
594aa066 | 210 | Return the length of the line. */ |
6b3ee98a RS |
211 | |
212 | long | |
873fbd0b | 213 | readline (struct linebuffer *linebuffer, FILE *stream) |
6b3ee98a RS |
214 | { |
215 | char *buffer = linebuffer->buffer; | |
216 | char *p = linebuffer->buffer; | |
217 | char *end = p + linebuffer->size; | |
218 | ||
219 | while (true) | |
220 | { | |
221 | int c = getc (stream); | |
222 | if (p == end) | |
223 | { | |
224 | linebuffer->size *= 2; | |
26df3bb0 | 225 | buffer = ((char *) xrealloc ((long *)buffer, linebuffer->size)); |
f3309b68 | 226 | p = buffer + (p - linebuffer->buffer); |
1ddb6978 | 227 | end = buffer + linebuffer->size; |
6b3ee98a RS |
228 | linebuffer->buffer = buffer; |
229 | } | |
230 | if (c < 0 || c == '\n') | |
231 | { | |
232 | *p = 0; | |
233 | break; | |
234 | } | |
235 | *p++ = c; | |
236 | } | |
237 | ||
238 | return p - buffer; | |
239 | } | |
240 | \f | |
3d23b985 RS |
241 | /* Extract a colon-terminated keyword from the string FIELD. |
242 | Return that keyword as a string stored in a static buffer. | |
243 | Store the address of the rest of the string into *REST. | |
244 | ||
245 | If there is no keyword, return NULL and don't alter *REST. */ | |
246 | ||
6b3ee98a | 247 | char * |
873fbd0b | 248 | get_keyword (register char *field, char **rest) |
6b3ee98a RS |
249 | { |
250 | static char keyword[KEYWORD_SIZE]; | |
251 | register char *ptr; | |
859cbb40 | 252 | register int c; |
6b3ee98a RS |
253 | |
254 | ptr = &keyword[0]; | |
859cbb40 | 255 | c = (unsigned char) *field++; |
3d23b985 | 256 | if (isspace (c) || c == ':') |
6b3ee98a | 257 | return ((char *) NULL); |
3d23b985 | 258 | *ptr++ = (islower (c) ? toupper (c) : c); |
859cbb40 | 259 | while (((c = (unsigned char) *field++) != ':') && ! isspace (c)) |
3d23b985 | 260 | *ptr++ = (islower (c) ? toupper (c) : c); |
6b3ee98a | 261 | *ptr++ = '\0'; |
3d23b985 | 262 | while (isspace (c)) |
859cbb40 | 263 | c = (unsigned char) *field++; |
3d23b985 RS |
264 | if (c != ':') |
265 | return ((char *) NULL); | |
6b3ee98a RS |
266 | *rest = field; |
267 | return &keyword[0]; | |
268 | } | |
269 | ||
3d23b985 RS |
270 | /* Nonzero if the string FIELD starts with a colon-terminated keyword. */ |
271 | ||
6b3ee98a | 272 | boolean |
873fbd0b | 273 | has_keyword (char *field) |
6b3ee98a RS |
274 | { |
275 | char *ignored; | |
276 | return (get_keyword (field, &ignored) != ((char *) NULL)); | |
277 | } | |
278 | ||
3d23b985 RS |
279 | /* Store the string FIELD, followed by any lines in THE_LIST, |
280 | into the buffer WHERE. | |
281 | Concatenate lines, putting just a space between them. | |
282 | Delete everything contained in parentheses. | |
283 | When a recipient name contains <...>, we discard | |
284 | everything except what is inside the <...>. | |
285 | ||
286 | We don't pay attention to overflowing WHERE; | |
287 | the caller has to make it big enough. */ | |
288 | ||
6b3ee98a | 289 | char * |
873fbd0b | 290 | add_field (line_list the_list, register char *field, register char *where) |
6b3ee98a RS |
291 | { |
292 | register char c; | |
293 | while (true) | |
294 | { | |
3d23b985 RS |
295 | char *this_recipient_where; |
296 | int in_quotes = 0; | |
297 | ||
6b3ee98a | 298 | *where++ = ' '; |
3d23b985 RS |
299 | this_recipient_where = where; |
300 | ||
6b3ee98a RS |
301 | while ((c = *field++) != '\0') |
302 | { | |
3d23b985 RS |
303 | if (c == '\\') |
304 | *where++ = c; | |
305 | else if (c == '"') | |
306 | { | |
307 | in_quotes = ! in_quotes; | |
308 | *where++ = c; | |
309 | } | |
310 | else if (in_quotes) | |
311 | *where++ = c; | |
312 | else if (c == '(') | |
6b3ee98a RS |
313 | { |
314 | while (*field && *field != ')') ++field; | |
3d23b985 RS |
315 | if (! (*field++)) break; /* no close */ |
316 | continue; | |
6b3ee98a | 317 | } |
3d23b985 RS |
318 | else if (c == ',') |
319 | { | |
320 | *where++ = ' '; | |
321 | /* When we get to the end of one recipient, | |
322 | don't discard it if the next one has <...>. */ | |
323 | this_recipient_where = where; | |
324 | } | |
325 | else if (c == '<') | |
326 | /* Discard everything we got before the `<'. */ | |
327 | where = this_recipient_where; | |
328 | else if (c == '>') | |
329 | /* Discard the rest of this name that follows the `>'. */ | |
330 | { | |
331 | while (*field && *field != ',') ++field; | |
332 | if (! (*field++)) break; /* no comma */ | |
333 | continue; | |
334 | } | |
335 | else | |
336 | *where++ = c; | |
6b3ee98a RS |
337 | } |
338 | if (the_list == NIL) break; | |
339 | field = the_list->string; | |
340 | the_list = the_list->continuation; | |
341 | } | |
342 | return where; | |
343 | } | |
344 | \f | |
345 | line_list | |
873fbd0b | 346 | make_file_preface (void) |
6b3ee98a RS |
347 | { |
348 | char *the_string, *temp; | |
349 | long idiotic_interface; | |
f5565804 | 350 | struct tm *tm; |
6b3ee98a RS |
351 | long prefix_length; |
352 | long user_length; | |
353 | long date_length; | |
354 | line_list result; | |
355 | ||
356 | prefix_length = strlen (FROM_PREFIX); | |
357 | time (&idiotic_interface); | |
f5565804 PE |
358 | /* Convert to a string, checking for out-of-range time stamps. |
359 | Don't use 'ctime', as that might dump core if the hardware clock | |
360 | is set to a bizarre value. */ | |
361 | tm = localtime (&idiotic_interface); | |
d65b4235 PE |
362 | if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year) |
363 | && (the_date = asctime (tm)))) | |
5a84ed33 | 364 | fatal ("current time is out of range"); |
6b3ee98a RS |
365 | /* the_date has an unwanted newline at the end */ |
366 | date_length = strlen (the_date) - 1; | |
367 | the_date[date_length] = '\0'; | |
368 | temp = cuserid ((char *) NULL); | |
369 | user_length = strlen (temp); | |
370 | the_user = alloc_string (user_length + 1); | |
371 | strcpy (the_user, temp); | |
7543028e RS |
372 | the_string = alloc_string (3 + prefix_length |
373 | + user_length | |
374 | + date_length); | |
6b3ee98a RS |
375 | temp = the_string; |
376 | strcpy (temp, FROM_PREFIX); | |
377 | temp = &temp[prefix_length]; | |
378 | *temp++ = ' '; | |
379 | strcpy (temp, the_user); | |
380 | temp = &temp[user_length]; | |
381 | *temp++ = ' '; | |
382 | strcpy (temp, the_date); | |
383 | result = new_list (); | |
384 | result->string = the_string; | |
385 | result->continuation = ((line_list) NULL); | |
386 | return result; | |
387 | } | |
388 | ||
389 | void | |
873fbd0b | 390 | write_line_list (register line_list the_list, FILE *the_stream) |
6b3ee98a RS |
391 | { |
392 | for ( ; | |
393 | the_list != ((line_list) NULL) ; | |
394 | the_list = the_list->continuation) | |
395 | { | |
396 | fputs (the_list->string, the_stream); | |
397 | putc ('\n', the_stream); | |
398 | } | |
399 | return; | |
400 | } | |
401 | \f | |
402 | int | |
873fbd0b | 403 | close_the_streams (void) |
6b3ee98a RS |
404 | { |
405 | register stream_list rem; | |
406 | for (rem = the_streams; | |
407 | rem != ((stream_list) NULL); | |
408 | rem = rem->rest_streams) | |
409 | no_problems = (no_problems && | |
410 | ((*rem->action) (rem->handle) == 0)); | |
411 | the_streams = ((stream_list) NULL); | |
65396510 | 412 | return (no_problems ? EXIT_SUCCESS : EXIT_FAILURE); |
6b3ee98a RS |
413 | } |
414 | ||
415 | void | |
b8463cbf | 416 | add_a_stream (FILE *the_stream, int (*closing_action) (FILE *)) |
6b3ee98a RS |
417 | { |
418 | stream_list old = the_streams; | |
419 | the_streams = new_stream (); | |
420 | the_streams->handle = the_stream; | |
421 | the_streams->action = closing_action; | |
422 | the_streams->rest_streams = old; | |
423 | return; | |
424 | } | |
425 | ||
426 | int | |
873fbd0b | 427 | my_fclose (FILE *the_file) |
6b3ee98a RS |
428 | { |
429 | putc ('\n', the_file); | |
430 | fflush (the_file); | |
431 | return fclose (the_file); | |
432 | } | |
433 | ||
434 | boolean | |
873fbd0b | 435 | open_a_file (char *name) |
6b3ee98a RS |
436 | { |
437 | FILE *the_stream = fopen (name, "a"); | |
438 | if (the_stream != ((FILE *) NULL)) | |
439 | { | |
440 | add_a_stream (the_stream, my_fclose); | |
441 | if (the_user == ((char *) NULL)) | |
442 | file_preface = make_file_preface (); | |
443 | write_line_list (file_preface, the_stream); | |
444 | return true; | |
445 | } | |
446 | return false; | |
447 | } | |
448 | ||
449 | void | |
873fbd0b | 450 | put_string (char *s) |
6b3ee98a RS |
451 | { |
452 | register stream_list rem; | |
453 | for (rem = the_streams; | |
454 | rem != ((stream_list) NULL); | |
455 | rem = rem->rest_streams) | |
456 | fputs (s, rem->handle); | |
457 | return; | |
458 | } | |
459 | ||
460 | void | |
5e3b9a89 | 461 | put_line (const char *string) |
6b3ee98a RS |
462 | { |
463 | register stream_list rem; | |
464 | for (rem = the_streams; | |
465 | rem != ((stream_list) NULL); | |
466 | rem = rem->rest_streams) | |
467 | { | |
5e3b9a89 | 468 | const char *s = string; |
a492a5b9 RS |
469 | int column = 0; |
470 | ||
471 | /* Divide STRING into lines. */ | |
472 | while (*s != 0) | |
473 | { | |
5e3b9a89 | 474 | const char *breakpos; |
a492a5b9 | 475 | |
fbffe7d9 | 476 | /* Find the last char that fits. */ |
a492a5b9 RS |
477 | for (breakpos = s; *breakpos && column < 78; ++breakpos) |
478 | { | |
479 | if (*breakpos == '\t') | |
480 | column += 8; | |
481 | else | |
482 | column++; | |
483 | } | |
fbffe7d9 RS |
484 | /* If we didn't reach end of line, break the line. */ |
485 | if (*breakpos) | |
a492a5b9 | 486 | { |
fbffe7d9 RS |
487 | /* Back up to just after the last comma that fits. */ |
488 | while (breakpos != s && breakpos[-1] != ',') --breakpos; | |
489 | ||
490 | if (breakpos == s) | |
491 | { | |
492 | /* If no comma fits, move past the first address anyway. */ | |
493 | while (*breakpos != 0 && *breakpos != ',') ++breakpos; | |
494 | if (*breakpos != 0) | |
495 | /* Include the comma after it. */ | |
496 | ++breakpos; | |
497 | } | |
a492a5b9 RS |
498 | } |
499 | /* Output that much, then break the line. */ | |
500 | fwrite (s, 1, breakpos - s, rem->handle); | |
a492a5b9 RS |
501 | column = 8; |
502 | ||
503 | /* Skip whitespace and prepare to print more addresses. */ | |
504 | s = breakpos; | |
505 | while (*s == ' ' || *s == '\t') ++s; | |
c1380f31 RS |
506 | if (*s != 0) |
507 | fputs ("\n\t", rem->handle); | |
a492a5b9 | 508 | } |
6b3ee98a RS |
509 | putc ('\n', rem->handle); |
510 | } | |
511 | return; | |
512 | } | |
513 | \f | |
514 | #define mail_error error | |
515 | ||
3d23b985 RS |
516 | /* Handle an FCC field. FIELD is the text of the first line (after |
517 | the header name), and THE_LIST holds the continuation lines if any. | |
518 | Call open_a_file for each file. */ | |
519 | ||
6b3ee98a | 520 | void |
873fbd0b | 521 | setup_files (register line_list the_list, register char *field) |
6b3ee98a RS |
522 | { |
523 | register char *start; | |
524 | register char c; | |
525 | while (true) | |
526 | { | |
3d23b985 RS |
527 | while (((c = *field) != '\0') |
528 | && (c == ' ' | |
529 | || c == '\t' | |
530 | || c == ',')) | |
6b3ee98a RS |
531 | field += 1; |
532 | if (c != '\0') | |
533 | { | |
534 | start = field; | |
3d23b985 RS |
535 | while (((c = *field) != '\0') |
536 | && c != ' ' | |
537 | && c != '\t' | |
538 | && c != ',') | |
6b3ee98a RS |
539 | field += 1; |
540 | *field = '\0'; | |
541 | if (!open_a_file (start)) | |
542 | mail_error ("Could not open file %s", start); | |
543 | *field = c; | |
544 | if (c != '\0') continue; | |
545 | } | |
3d23b985 RS |
546 | if (the_list == ((line_list) NULL)) |
547 | return; | |
6b3ee98a RS |
548 | field = the_list->string; |
549 | the_list = the_list->continuation; | |
550 | } | |
551 | } | |
552 | \f | |
3d23b985 RS |
553 | /* Compute the total size of all recipient names stored in THE_HEADER. |
554 | The result says how big to make the buffer to pass to parse_header. */ | |
555 | ||
6b3ee98a | 556 | int |
873fbd0b | 557 | args_size (header the_header) |
6b3ee98a RS |
558 | { |
559 | register header old = the_header; | |
560 | register line_list rem; | |
561 | register int size = 0; | |
562 | do | |
563 | { | |
564 | char *field; | |
565 | register char *keyword = get_keyword (the_header->text->string, &field); | |
3d23b985 RS |
566 | if ((strcmp (keyword, "TO") == 0) |
567 | || (strcmp (keyword, "CC") == 0) | |
568 | || (strcmp (keyword, "BCC") == 0)) | |
6b3ee98a RS |
569 | { |
570 | size += 1 + strlen (field); | |
571 | for (rem = the_header->text->continuation; | |
572 | rem != NIL; | |
573 | rem = rem->continuation) | |
574 | size += 1 + strlen (rem->string); | |
575 | } | |
576 | the_header = the_header->next; | |
577 | } while (the_header != old); | |
578 | return size; | |
579 | } | |
580 | ||
3d23b985 RS |
581 | /* Scan the header described by the lists THE_HEADER, |
582 | and put all recipient names into the buffer WHERE. | |
583 | Precede each recipient name with a space. | |
584 | ||
585 | Also, if the header has any FCC fields, call setup_files for each one. */ | |
586 | ||
cb58ebb0 | 587 | void |
873fbd0b | 588 | parse_header (header the_header, register char *where) |
6b3ee98a RS |
589 | { |
590 | register header old = the_header; | |
591 | do | |
592 | { | |
593 | char *field; | |
594 | register char *keyword = get_keyword (the_header->text->string, &field); | |
595 | if (strcmp (keyword, "TO") == 0) | |
596 | where = add_field (the_header->text->continuation, field, where); | |
597 | else if (strcmp (keyword, "CC") == 0) | |
598 | where = add_field (the_header->text->continuation, field, where); | |
599 | else if (strcmp (keyword, "BCC") == 0) | |
600 | { | |
601 | where = add_field (the_header->text->continuation, field, where); | |
602 | the_header->previous->next = the_header->next; | |
603 | the_header->next->previous = the_header->previous; | |
604 | } | |
605 | else if (strcmp (keyword, "FCC") == 0) | |
606 | setup_files (the_header->text->continuation, field); | |
607 | the_header = the_header->next; | |
608 | } while (the_header != old); | |
609 | *where = '\0'; | |
610 | return; | |
611 | } | |
594aa066 | 612 | \f |
3d23b985 RS |
613 | /* Read lines from the input until we get a blank line. |
614 | Create a list of `header' objects, one for each header field, | |
615 | each of which points to a list of `line_list' objects, | |
616 | one for each line in that field. | |
617 | Continuation lines are grouped in the headers they continue. */ | |
594aa066 | 618 | |
6b3ee98a | 619 | header |
873fbd0b | 620 | read_header (void) |
6b3ee98a RS |
621 | { |
622 | register header the_header = ((header) NULL); | |
623 | register line_list *next_line = ((line_list *) NULL); | |
624 | ||
625 | init_linebuffer (&lb); | |
626 | ||
627 | do | |
628 | { | |
629 | long length; | |
630 | register char *line; | |
631 | ||
632 | readline (&lb, stdin); | |
633 | line = lb.buffer; | |
634 | length = strlen (line); | |
635 | if (length == 0) break; | |
636 | ||
637 | if (has_keyword (line)) | |
638 | { | |
639 | register header old = the_header; | |
640 | the_header = new_header (); | |
641 | if (old == ((header) NULL)) | |
642 | { | |
643 | the_header->next = the_header; | |
644 | the_header->previous = the_header; | |
645 | } | |
646 | else | |
647 | { | |
648 | the_header->previous = old; | |
649 | the_header->next = old->next; | |
650 | old->next = the_header; | |
651 | } | |
652 | next_line = &(the_header->text); | |
653 | } | |
654 | ||
655 | if (next_line == ((line_list *) NULL)) | |
656 | { | |
657 | /* Not a valid header */ | |
65396510 | 658 | exit (EXIT_FAILURE); |
6b3ee98a RS |
659 | } |
660 | *next_line = new_list (); | |
661 | (*next_line)->string = alloc_string (length); | |
662 | strcpy (((*next_line)->string), line); | |
663 | next_line = &((*next_line)->continuation); | |
664 | *next_line = NIL; | |
665 | ||
666 | } while (true); | |
667 | ||
2ef88a94 RS |
668 | if (! the_header) |
669 | fatal ("input message has no header"); | |
6b3ee98a RS |
670 | return the_header->next; |
671 | } | |
672 | \f | |
673 | void | |
873fbd0b | 674 | write_header (header the_header) |
6b3ee98a RS |
675 | { |
676 | register header old = the_header; | |
677 | do | |
678 | { | |
679 | register line_list the_list; | |
680 | for (the_list = the_header->text; | |
681 | the_list != NIL; | |
682 | the_list = the_list->continuation) | |
683 | put_line (the_list->string); | |
684 | the_header = the_header->next; | |
685 | } while (the_header != old); | |
686 | put_line (""); | |
687 | return; | |
688 | } | |
689 | \f | |
d0dff6e5 | 690 | int |
873fbd0b | 691 | main (int argc, char **argv) |
6b3ee98a RS |
692 | { |
693 | char *command_line; | |
694 | header the_header; | |
695 | long name_length; | |
5e3b9a89 | 696 | const char *mail_program_name; |
6b3ee98a RS |
697 | char buf[BUFLEN + 1]; |
698 | register int size; | |
699 | FILE *the_pipe; | |
700 | ||
6b3ee98a RS |
701 | mail_program_name = getenv ("FAKEMAILER"); |
702 | if (!(mail_program_name && *mail_program_name)) | |
45c1955d | 703 | mail_program_name = MAIL_PROGRAM_NAME; |
6b3ee98a RS |
704 | name_length = strlen (mail_program_name); |
705 | ||
706 | my_name = MY_NAME; | |
707 | the_streams = ((stream_list) NULL); | |
708 | the_date = ((char *) NULL); | |
709 | the_user = ((char *) NULL); | |
710 | ||
711 | the_header = read_header (); | |
712 | command_line = alloc_string (name_length + args_size (the_header)); | |
713 | strcpy (command_line, mail_program_name); | |
714 | parse_header (the_header, &command_line[name_length]); | |
594aa066 | 715 | |
6b3ee98a RS |
716 | the_pipe = popen (command_line, "w"); |
717 | if (the_pipe == ((FILE *) NULL)) | |
718 | fatal ("cannot open pipe to real mailer"); | |
719 | ||
720 | add_a_stream (the_pipe, pclose); | |
721 | ||
722 | write_header (the_header); | |
723 | ||
724 | /* Dump the message itself */ | |
725 | ||
726 | while (!feof (stdin)) | |
727 | { | |
728 | size = fread (buf, 1, BUFLEN, stdin); | |
729 | buf[size] = '\0'; | |
730 | put_string (buf); | |
731 | } | |
732 | ||
733 | exit (close_the_streams ()); | |
734 | } | |
735 | ||
26528bbc | 736 | #endif /* not MSDOS */ |
6b3ee98a | 737 | #endif /* not BSD 4.2 (or newer) */ |
ab5796a9 | 738 | |
65396510 TTN |
739 | |
740 | /* fakemail.c ends here */ |