Commit | Line | Data |
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6b3ee98a | 1 | /* sendmail-like interface to /bin/mail for system V, |
4ee9629e | 2 | Copyright (C) 1985, 1994, 1999 Free Software Foundation, Inc. |
6b3ee98a RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
518dd722 JB |
6 | GNU Emacs is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
530715fe | 8 | the Free Software Foundation; either version 2, or (at your option) |
518dd722 JB |
9 | any later version. |
10 | ||
6b3ee98a | 11 | GNU Emacs is distributed in the hope that it will be useful, |
518dd722 JB |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
6b3ee98a | 20 | |
6b3ee98a | 21 | #define NO_SHORTNAMES |
a33c19b1 DL |
22 | #define _XOPEN_SOURCE 500 /* for cuserid */ |
23 | #include <config.h> | |
6b3ee98a | 24 | |
e397a017 | 25 | #if defined (BSD_SYSTEM) && !defined (BSD4_1) && !defined (USE_FAKEMAIL) |
6b3ee98a | 26 | /* This program isnot used in BSD, so just avoid loader complaints. */ |
d0dff6e5 | 27 | int |
6b3ee98a RS |
28 | main () |
29 | { | |
0d1841a6 | 30 | return 0; |
6b3ee98a RS |
31 | } |
32 | #else /* not BSD 4.2 (or newer) */ | |
26528bbc | 33 | #ifdef MSDOS |
d0dff6e5 | 34 | int |
26528bbc RS |
35 | main () |
36 | { | |
0d1841a6 | 37 | return 0; |
26528bbc RS |
38 | } |
39 | #else /* not MSDOS */ | |
6b3ee98a RS |
40 | /* This conditional contains all the rest of the file. */ |
41 | ||
42 | /* These are defined in config in some versions. */ | |
43 | ||
44 | #ifdef static | |
45 | #undef static | |
46 | #endif | |
47 | ||
7c544420 RS |
48 | #ifdef WINDOWSNT |
49 | #include "ntlib.h" | |
50 | #endif | |
51 | ||
6b3ee98a RS |
52 | #include <stdio.h> |
53 | #include <string.h> | |
54 | #include <ctype.h> | |
55 | #include <time.h> | |
56 | #include <pwd.h> | |
7543028e RS |
57 | |
58 | /* This is to declare cuserid. */ | |
59 | #ifdef HAVE_UNISTD_H | |
60 | #include <unistd.h> | |
61 | #endif | |
6b3ee98a RS |
62 | \f |
63 | /* Type definitions */ | |
64 | ||
65 | #define boolean int | |
66 | #define true 1 | |
67 | #define false 0 | |
68 | ||
69 | /* Various lists */ | |
70 | ||
71 | struct line_record | |
72 | { | |
73 | char *string; | |
74 | struct line_record *continuation; | |
75 | }; | |
76 | typedef struct line_record *line_list; | |
77 | ||
78 | struct header_record | |
79 | { | |
80 | line_list text; | |
81 | struct header_record *next; | |
82 | struct header_record *previous; | |
83 | }; | |
84 | typedef struct header_record *header; | |
85 | ||
86 | struct stream_record | |
87 | { | |
88 | FILE *handle; | |
89 | int (*action)(); | |
90 | struct stream_record *rest_streams; | |
91 | }; | |
92 | typedef struct stream_record *stream_list; | |
93 | ||
94 | /* A `struct linebuffer' is a structure which holds a line of text. | |
95 | * `readline' reads a line from a stream into a linebuffer | |
96 | * and works regardless of the length of the line. | |
97 | */ | |
98 | ||
99 | struct linebuffer | |
100 | { | |
101 | long size; | |
102 | char *buffer; | |
103 | }; | |
104 | ||
105 | struct linebuffer lb; | |
106 | ||
107 | #define new_list() \ | |
108 | ((line_list) xmalloc (sizeof (struct line_record))) | |
109 | #define new_header() \ | |
110 | ((header) xmalloc (sizeof (struct header_record))) | |
111 | #define new_stream() \ | |
112 | ((stream_list) xmalloc (sizeof (struct stream_record))) | |
113 | #define alloc_string(nchars) \ | |
114 | ((char *) xmalloc ((nchars) + 1)) | |
115 | \f | |
116 | /* Global declarations */ | |
117 | ||
118 | #define BUFLEN 1024 | |
119 | #define KEYWORD_SIZE 256 | |
120 | #define FROM_PREFIX "From" | |
121 | #define MY_NAME "fakemail" | |
122 | #define NIL ((line_list) NULL) | |
123 | #define INITIAL_LINE_SIZE 200 | |
124 | ||
125 | #ifndef MAIL_PROGRAM_NAME | |
126 | #define MAIL_PROGRAM_NAME "/bin/mail" | |
127 | #endif | |
128 | ||
129 | static char *my_name; | |
130 | static char *the_date; | |
131 | static char *the_user; | |
132 | static line_list file_preface; | |
133 | static stream_list the_streams; | |
134 | static boolean no_problems = true; | |
135 | ||
136 | extern FILE *popen (); | |
137 | extern int fclose (), pclose (); | |
6b3ee98a RS |
138 | |
139 | #ifdef CURRENT_USER | |
140 | extern struct passwd *getpwuid (); | |
141 | extern unsigned short geteuid (); | |
142 | static struct passwd *my_entry; | |
143 | #define cuserid(s) \ | |
144 | (my_entry = getpwuid (((int) geteuid ())), \ | |
145 | my_entry->pw_name) | |
146 | #endif | |
147 | \f | |
148 | /* Utilities */ | |
149 | ||
150 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
151 | ||
152 | static void | |
153 | error (s1, s2) | |
154 | char *s1, *s2; | |
155 | { | |
156 | printf ("%s: ", my_name); | |
157 | printf (s1, s2); | |
158 | printf ("\n"); | |
159 | no_problems = false; | |
160 | } | |
161 | ||
162 | /* Print error message and exit. */ | |
163 | ||
164 | static void | |
165 | fatal (s1, s2) | |
166 | char *s1, *s2; | |
167 | { | |
168 | error (s1, s2); | |
169 | exit (1); | |
170 | } | |
171 | ||
172 | /* Like malloc but get fatal error if memory is exhausted. */ | |
173 | ||
65119039 | 174 | static long * |
6b3ee98a RS |
175 | xmalloc (size) |
176 | int size; | |
177 | { | |
65119039 RS |
178 | long *result = (long *) malloc (((unsigned) size)); |
179 | if (result == ((long *) NULL)) | |
6b3ee98a RS |
180 | fatal ("virtual memory exhausted", 0); |
181 | return result; | |
182 | } | |
183 | ||
65119039 | 184 | static long * |
6b3ee98a | 185 | xrealloc (ptr, size) |
65119039 | 186 | long *ptr; |
6b3ee98a RS |
187 | int size; |
188 | { | |
65119039 | 189 | long *result = (long *) realloc (ptr, ((unsigned) size)); |
5391a863 | 190 | if (result == ((long *) NULL)) |
6b3ee98a RS |
191 | fatal ("virtual memory exhausted"); |
192 | return result; | |
193 | } | |
194 | \f | |
195 | /* Initialize a linebuffer for use */ | |
196 | ||
197 | void | |
198 | init_linebuffer (linebuffer) | |
199 | struct linebuffer *linebuffer; | |
200 | { | |
201 | linebuffer->size = INITIAL_LINE_SIZE; | |
202 | linebuffer->buffer = ((char *) xmalloc (INITIAL_LINE_SIZE)); | |
203 | } | |
204 | ||
205 | /* Read a line of text from `stream' into `linebuffer'. | |
206 | * Return the length of the line. | |
207 | */ | |
208 | ||
209 | long | |
210 | readline (linebuffer, stream) | |
211 | struct linebuffer *linebuffer; | |
212 | FILE *stream; | |
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; | |
26df3bb0 | 224 | buffer = ((char *) xrealloc ((long *)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 | ||
6b3ee98a RS |
246 | char * |
247 | get_keyword (field, rest) | |
248 | register char *field; | |
249 | char **rest; | |
250 | { | |
251 | static char keyword[KEYWORD_SIZE]; | |
252 | register char *ptr; | |
859cbb40 | 253 | register int c; |
6b3ee98a RS |
254 | |
255 | ptr = &keyword[0]; | |
859cbb40 | 256 | c = (unsigned char) *field++; |
3d23b985 | 257 | if (isspace (c) || c == ':') |
6b3ee98a | 258 | return ((char *) NULL); |
3d23b985 | 259 | *ptr++ = (islower (c) ? toupper (c) : c); |
859cbb40 | 260 | while (((c = (unsigned char) *field++) != ':') && ! isspace (c)) |
3d23b985 | 261 | *ptr++ = (islower (c) ? toupper (c) : c); |
6b3ee98a | 262 | *ptr++ = '\0'; |
3d23b985 | 263 | while (isspace (c)) |
859cbb40 | 264 | c = (unsigned char) *field++; |
3d23b985 RS |
265 | if (c != ':') |
266 | return ((char *) NULL); | |
6b3ee98a RS |
267 | *rest = field; |
268 | return &keyword[0]; | |
269 | } | |
270 | ||
3d23b985 RS |
271 | /* Nonzero if the string FIELD starts with a colon-terminated keyword. */ |
272 | ||
6b3ee98a RS |
273 | boolean |
274 | has_keyword (field) | |
275 | char *field; | |
276 | { | |
277 | char *ignored; | |
278 | return (get_keyword (field, &ignored) != ((char *) NULL)); | |
279 | } | |
280 | ||
3d23b985 RS |
281 | /* Store the string FIELD, followed by any lines in THE_LIST, |
282 | into the buffer WHERE. | |
283 | Concatenate lines, putting just a space between them. | |
284 | Delete everything contained in parentheses. | |
285 | When a recipient name contains <...>, we discard | |
286 | everything except what is inside the <...>. | |
287 | ||
288 | We don't pay attention to overflowing WHERE; | |
289 | the caller has to make it big enough. */ | |
290 | ||
6b3ee98a RS |
291 | char * |
292 | add_field (the_list, field, where) | |
293 | line_list the_list; | |
294 | register char *field, *where; | |
295 | { | |
296 | register char c; | |
297 | while (true) | |
298 | { | |
3d23b985 RS |
299 | char *this_recipient_where; |
300 | int in_quotes = 0; | |
301 | ||
6b3ee98a | 302 | *where++ = ' '; |
3d23b985 RS |
303 | this_recipient_where = where; |
304 | ||
6b3ee98a RS |
305 | while ((c = *field++) != '\0') |
306 | { | |
3d23b985 RS |
307 | if (c == '\\') |
308 | *where++ = c; | |
309 | else if (c == '"') | |
310 | { | |
311 | in_quotes = ! in_quotes; | |
312 | *where++ = c; | |
313 | } | |
314 | else if (in_quotes) | |
315 | *where++ = c; | |
316 | else if (c == '(') | |
6b3ee98a RS |
317 | { |
318 | while (*field && *field != ')') ++field; | |
3d23b985 RS |
319 | if (! (*field++)) break; /* no close */ |
320 | continue; | |
6b3ee98a | 321 | } |
3d23b985 RS |
322 | else if (c == ',') |
323 | { | |
324 | *where++ = ' '; | |
325 | /* When we get to the end of one recipient, | |
326 | don't discard it if the next one has <...>. */ | |
327 | this_recipient_where = where; | |
328 | } | |
329 | else if (c == '<') | |
330 | /* Discard everything we got before the `<'. */ | |
331 | where = this_recipient_where; | |
332 | else if (c == '>') | |
333 | /* Discard the rest of this name that follows the `>'. */ | |
334 | { | |
335 | while (*field && *field != ',') ++field; | |
336 | if (! (*field++)) break; /* no comma */ | |
337 | continue; | |
338 | } | |
339 | else | |
340 | *where++ = c; | |
6b3ee98a RS |
341 | } |
342 | if (the_list == NIL) break; | |
343 | field = the_list->string; | |
344 | the_list = the_list->continuation; | |
345 | } | |
346 | return where; | |
347 | } | |
348 | \f | |
349 | line_list | |
350 | make_file_preface () | |
351 | { | |
352 | char *the_string, *temp; | |
353 | long idiotic_interface; | |
354 | long prefix_length; | |
355 | long user_length; | |
356 | long date_length; | |
357 | line_list result; | |
358 | ||
359 | prefix_length = strlen (FROM_PREFIX); | |
360 | time (&idiotic_interface); | |
361 | the_date = ctime (&idiotic_interface); | |
362 | /* the_date has an unwanted newline at the end */ | |
363 | date_length = strlen (the_date) - 1; | |
364 | the_date[date_length] = '\0'; | |
365 | temp = cuserid ((char *) NULL); | |
366 | user_length = strlen (temp); | |
367 | the_user = alloc_string (user_length + 1); | |
368 | strcpy (the_user, temp); | |
7543028e RS |
369 | the_string = alloc_string (3 + prefix_length |
370 | + user_length | |
371 | + date_length); | |
6b3ee98a RS |
372 | temp = the_string; |
373 | strcpy (temp, FROM_PREFIX); | |
374 | temp = &temp[prefix_length]; | |
375 | *temp++ = ' '; | |
376 | strcpy (temp, the_user); | |
377 | temp = &temp[user_length]; | |
378 | *temp++ = ' '; | |
379 | strcpy (temp, the_date); | |
380 | result = new_list (); | |
381 | result->string = the_string; | |
382 | result->continuation = ((line_list) NULL); | |
383 | return result; | |
384 | } | |
385 | ||
386 | void | |
387 | write_line_list (the_list, the_stream) | |
388 | register line_list the_list; | |
389 | FILE *the_stream; | |
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 | |
401 | int | |
402 | close_the_streams () | |
403 | { | |
404 | register stream_list rem; | |
405 | for (rem = the_streams; | |
406 | rem != ((stream_list) NULL); | |
407 | rem = rem->rest_streams) | |
408 | no_problems = (no_problems && | |
409 | ((*rem->action) (rem->handle) == 0)); | |
410 | the_streams = ((stream_list) NULL); | |
411 | return (no_problems ? 0 : 1); | |
412 | } | |
413 | ||
414 | void | |
415 | add_a_stream (the_stream, closing_action) | |
416 | FILE *the_stream; | |
417 | int (*closing_action)(); | |
418 | { | |
419 | stream_list old = the_streams; | |
420 | the_streams = new_stream (); | |
421 | the_streams->handle = the_stream; | |
422 | the_streams->action = closing_action; | |
423 | the_streams->rest_streams = old; | |
424 | return; | |
425 | } | |
426 | ||
427 | int | |
428 | my_fclose (the_file) | |
429 | FILE *the_file; | |
430 | { | |
431 | putc ('\n', the_file); | |
432 | fflush (the_file); | |
433 | return fclose (the_file); | |
434 | } | |
435 | ||
436 | boolean | |
437 | open_a_file (name) | |
438 | char *name; | |
439 | { | |
440 | FILE *the_stream = fopen (name, "a"); | |
441 | if (the_stream != ((FILE *) NULL)) | |
442 | { | |
443 | add_a_stream (the_stream, my_fclose); | |
444 | if (the_user == ((char *) NULL)) | |
445 | file_preface = make_file_preface (); | |
446 | write_line_list (file_preface, the_stream); | |
447 | return true; | |
448 | } | |
449 | return false; | |
450 | } | |
451 | ||
452 | void | |
453 | put_string (s) | |
454 | char *s; | |
455 | { | |
456 | register stream_list rem; | |
457 | for (rem = the_streams; | |
458 | rem != ((stream_list) NULL); | |
459 | rem = rem->rest_streams) | |
460 | fputs (s, rem->handle); | |
461 | return; | |
462 | } | |
463 | ||
464 | void | |
a492a5b9 RS |
465 | put_line (string) |
466 | char *string; | |
6b3ee98a RS |
467 | { |
468 | register stream_list rem; | |
469 | for (rem = the_streams; | |
470 | rem != ((stream_list) NULL); | |
471 | rem = rem->rest_streams) | |
472 | { | |
a492a5b9 RS |
473 | char *s = string; |
474 | int column = 0; | |
475 | ||
476 | /* Divide STRING into lines. */ | |
477 | while (*s != 0) | |
478 | { | |
479 | char *breakpos; | |
480 | ||
fbffe7d9 | 481 | /* Find the last char that fits. */ |
a492a5b9 RS |
482 | for (breakpos = s; *breakpos && column < 78; ++breakpos) |
483 | { | |
484 | if (*breakpos == '\t') | |
485 | column += 8; | |
486 | else | |
487 | column++; | |
488 | } | |
fbffe7d9 RS |
489 | /* If we didn't reach end of line, break the line. */ |
490 | if (*breakpos) | |
a492a5b9 | 491 | { |
fbffe7d9 RS |
492 | /* Back up to just after the last comma that fits. */ |
493 | while (breakpos != s && breakpos[-1] != ',') --breakpos; | |
494 | ||
495 | if (breakpos == s) | |
496 | { | |
497 | /* If no comma fits, move past the first address anyway. */ | |
498 | while (*breakpos != 0 && *breakpos != ',') ++breakpos; | |
499 | if (*breakpos != 0) | |
500 | /* Include the comma after it. */ | |
501 | ++breakpos; | |
502 | } | |
a492a5b9 RS |
503 | } |
504 | /* Output that much, then break the line. */ | |
505 | fwrite (s, 1, breakpos - s, rem->handle); | |
a492a5b9 RS |
506 | column = 8; |
507 | ||
508 | /* Skip whitespace and prepare to print more addresses. */ | |
509 | s = breakpos; | |
510 | while (*s == ' ' || *s == '\t') ++s; | |
c1380f31 RS |
511 | if (*s != 0) |
512 | fputs ("\n\t", rem->handle); | |
a492a5b9 | 513 | } |
6b3ee98a RS |
514 | putc ('\n', rem->handle); |
515 | } | |
516 | return; | |
517 | } | |
518 | \f | |
519 | #define mail_error error | |
520 | ||
3d23b985 RS |
521 | /* Handle an FCC field. FIELD is the text of the first line (after |
522 | the header name), and THE_LIST holds the continuation lines if any. | |
523 | Call open_a_file for each file. */ | |
524 | ||
6b3ee98a RS |
525 | void |
526 | setup_files (the_list, field) | |
527 | register line_list the_list; | |
528 | register char *field; | |
529 | { | |
530 | register char *start; | |
531 | register char c; | |
532 | while (true) | |
533 | { | |
3d23b985 RS |
534 | while (((c = *field) != '\0') |
535 | && (c == ' ' | |
536 | || c == '\t' | |
537 | || c == ',')) | |
6b3ee98a RS |
538 | field += 1; |
539 | if (c != '\0') | |
540 | { | |
541 | start = field; | |
3d23b985 RS |
542 | while (((c = *field) != '\0') |
543 | && c != ' ' | |
544 | && c != '\t' | |
545 | && c != ',') | |
6b3ee98a RS |
546 | field += 1; |
547 | *field = '\0'; | |
548 | if (!open_a_file (start)) | |
549 | mail_error ("Could not open file %s", start); | |
550 | *field = c; | |
551 | if (c != '\0') continue; | |
552 | } | |
3d23b985 RS |
553 | if (the_list == ((line_list) NULL)) |
554 | return; | |
6b3ee98a RS |
555 | field = the_list->string; |
556 | the_list = the_list->continuation; | |
557 | } | |
558 | } | |
559 | \f | |
3d23b985 RS |
560 | /* Compute the total size of all recipient names stored in THE_HEADER. |
561 | The result says how big to make the buffer to pass to parse_header. */ | |
562 | ||
6b3ee98a RS |
563 | int |
564 | args_size (the_header) | |
565 | header the_header; | |
566 | { | |
567 | register header old = the_header; | |
568 | register line_list rem; | |
569 | register int size = 0; | |
570 | do | |
571 | { | |
572 | char *field; | |
573 | register char *keyword = get_keyword (the_header->text->string, &field); | |
3d23b985 RS |
574 | if ((strcmp (keyword, "TO") == 0) |
575 | || (strcmp (keyword, "CC") == 0) | |
576 | || (strcmp (keyword, "BCC") == 0)) | |
6b3ee98a RS |
577 | { |
578 | size += 1 + strlen (field); | |
579 | for (rem = the_header->text->continuation; | |
580 | rem != NIL; | |
581 | rem = rem->continuation) | |
582 | size += 1 + strlen (rem->string); | |
583 | } | |
584 | the_header = the_header->next; | |
585 | } while (the_header != old); | |
586 | return size; | |
587 | } | |
588 | ||
3d23b985 RS |
589 | /* Scan the header described by the lists THE_HEADER, |
590 | and put all recipient names into the buffer WHERE. | |
591 | Precede each recipient name with a space. | |
592 | ||
593 | Also, if the header has any FCC fields, call setup_files for each one. */ | |
594 | ||
cb58ebb0 | 595 | void |
6b3ee98a RS |
596 | parse_header (the_header, where) |
597 | header the_header; | |
598 | register char *where; | |
599 | { | |
600 | register header old = the_header; | |
601 | do | |
602 | { | |
603 | char *field; | |
604 | register char *keyword = get_keyword (the_header->text->string, &field); | |
605 | if (strcmp (keyword, "TO") == 0) | |
606 | where = add_field (the_header->text->continuation, field, where); | |
607 | else if (strcmp (keyword, "CC") == 0) | |
608 | where = add_field (the_header->text->continuation, field, where); | |
609 | else if (strcmp (keyword, "BCC") == 0) | |
610 | { | |
611 | where = add_field (the_header->text->continuation, field, where); | |
612 | the_header->previous->next = the_header->next; | |
613 | the_header->next->previous = the_header->previous; | |
614 | } | |
615 | else if (strcmp (keyword, "FCC") == 0) | |
616 | setup_files (the_header->text->continuation, field); | |
617 | the_header = the_header->next; | |
618 | } while (the_header != old); | |
619 | *where = '\0'; | |
620 | return; | |
621 | } | |
622 | \f | |
3d23b985 RS |
623 | /* Read lines from the input until we get a blank line. |
624 | Create a list of `header' objects, one for each header field, | |
625 | each of which points to a list of `line_list' objects, | |
626 | one for each line in that field. | |
627 | Continuation lines are grouped in the headers they continue. */ | |
628 | ||
6b3ee98a RS |
629 | header |
630 | read_header () | |
631 | { | |
632 | register header the_header = ((header) NULL); | |
633 | register line_list *next_line = ((line_list *) NULL); | |
634 | ||
635 | init_linebuffer (&lb); | |
636 | ||
637 | do | |
638 | { | |
639 | long length; | |
640 | register char *line; | |
641 | ||
642 | readline (&lb, stdin); | |
643 | line = lb.buffer; | |
644 | length = strlen (line); | |
645 | if (length == 0) break; | |
646 | ||
647 | if (has_keyword (line)) | |
648 | { | |
649 | register header old = the_header; | |
650 | the_header = new_header (); | |
651 | if (old == ((header) NULL)) | |
652 | { | |
653 | the_header->next = the_header; | |
654 | the_header->previous = the_header; | |
655 | } | |
656 | else | |
657 | { | |
658 | the_header->previous = old; | |
659 | the_header->next = old->next; | |
660 | old->next = the_header; | |
661 | } | |
662 | next_line = &(the_header->text); | |
663 | } | |
664 | ||
665 | if (next_line == ((line_list *) NULL)) | |
666 | { | |
667 | /* Not a valid header */ | |
668 | exit (1); | |
669 | } | |
670 | *next_line = new_list (); | |
671 | (*next_line)->string = alloc_string (length); | |
672 | strcpy (((*next_line)->string), line); | |
673 | next_line = &((*next_line)->continuation); | |
674 | *next_line = NIL; | |
675 | ||
676 | } while (true); | |
677 | ||
678 | return the_header->next; | |
679 | } | |
680 | \f | |
681 | void | |
682 | write_header (the_header) | |
683 | header the_header; | |
684 | { | |
685 | register header old = the_header; | |
686 | do | |
687 | { | |
688 | register line_list the_list; | |
689 | for (the_list = the_header->text; | |
690 | the_list != NIL; | |
691 | the_list = the_list->continuation) | |
692 | put_line (the_list->string); | |
693 | the_header = the_header->next; | |
694 | } while (the_header != old); | |
695 | put_line (""); | |
696 | return; | |
697 | } | |
698 | \f | |
d0dff6e5 | 699 | int |
6b3ee98a RS |
700 | main (argc, argv) |
701 | int argc; | |
702 | char **argv; | |
703 | { | |
704 | char *command_line; | |
705 | header the_header; | |
706 | long name_length; | |
707 | char *mail_program_name; | |
708 | char buf[BUFLEN + 1]; | |
709 | register int size; | |
710 | FILE *the_pipe; | |
711 | ||
712 | extern char *getenv (); | |
713 | ||
714 | mail_program_name = getenv ("FAKEMAILER"); | |
715 | if (!(mail_program_name && *mail_program_name)) | |
716 | mail_program_name = MAIL_PROGRAM_NAME; | |
717 | name_length = strlen (mail_program_name); | |
718 | ||
719 | my_name = MY_NAME; | |
720 | the_streams = ((stream_list) NULL); | |
721 | the_date = ((char *) NULL); | |
722 | the_user = ((char *) NULL); | |
723 | ||
724 | the_header = read_header (); | |
725 | command_line = alloc_string (name_length + args_size (the_header)); | |
726 | strcpy (command_line, mail_program_name); | |
727 | parse_header (the_header, &command_line[name_length]); | |
728 | ||
729 | the_pipe = popen (command_line, "w"); | |
730 | if (the_pipe == ((FILE *) NULL)) | |
731 | fatal ("cannot open pipe to real mailer"); | |
732 | ||
733 | add_a_stream (the_pipe, pclose); | |
734 | ||
735 | write_header (the_header); | |
736 | ||
737 | /* Dump the message itself */ | |
738 | ||
739 | while (!feof (stdin)) | |
740 | { | |
741 | size = fread (buf, 1, BUFLEN, stdin); | |
742 | buf[size] = '\0'; | |
743 | put_string (buf); | |
744 | } | |
745 | ||
746 | exit (close_the_streams ()); | |
747 | } | |
748 | ||
26528bbc | 749 | #endif /* not MSDOS */ |
6b3ee98a | 750 | #endif /* not BSD 4.2 (or newer) */ |