Commit | Line | Data |
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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> |
a4fe4e89 PE |
65 | |
66 | #include <ignore-value.h> | |
6b3ee98a RS |
67 | \f |
68 | /* Type definitions */ | |
69 | ||
70 | #define boolean int | |
71 | #define true 1 | |
72 | #define false 0 | |
73 | ||
d65b4235 PE |
74 | #define TM_YEAR_BASE 1900 |
75 | ||
76 | /* Nonzero if TM_YEAR is a struct tm's tm_year value that causes | |
77 | asctime to have well-defined behavior. */ | |
78 | #ifndef TM_YEAR_IN_ASCTIME_RANGE | |
f5565804 | 79 | # define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \ |
d65b4235 | 80 | (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE) |
f5565804 PE |
81 | #endif |
82 | ||
6b3ee98a RS |
83 | /* Various lists */ |
84 | ||
85 | struct line_record | |
86 | { | |
87 | char *string; | |
88 | struct line_record *continuation; | |
89 | }; | |
90 | typedef struct line_record *line_list; | |
91 | ||
92 | struct header_record | |
93 | { | |
94 | line_list text; | |
95 | struct header_record *next; | |
96 | struct header_record *previous; | |
97 | }; | |
98 | typedef struct header_record *header; | |
594aa066 | 99 | |
6b3ee98a RS |
100 | struct stream_record |
101 | { | |
102 | FILE *handle; | |
b8463cbf | 103 | int (*action)(FILE *); |
6b3ee98a RS |
104 | struct stream_record *rest_streams; |
105 | }; | |
106 | typedef struct stream_record *stream_list; | |
107 | ||
108 | /* A `struct linebuffer' is a structure which holds a line of text. | |
109 | * `readline' reads a line from a stream into a linebuffer | |
110 | * and works regardless of the length of the line. | |
111 | */ | |
112 | ||
113 | struct linebuffer | |
114 | { | |
115 | long size; | |
116 | char *buffer; | |
117 | }; | |
118 | ||
119 | struct linebuffer lb; | |
120 | ||
121 | #define new_list() \ | |
122 | ((line_list) xmalloc (sizeof (struct line_record))) | |
123 | #define new_header() \ | |
124 | ((header) xmalloc (sizeof (struct header_record))) | |
125 | #define new_stream() \ | |
126 | ((stream_list) xmalloc (sizeof (struct stream_record))) | |
127 | #define alloc_string(nchars) \ | |
128 | ((char *) xmalloc ((nchars) + 1)) | |
129 | \f | |
130 | /* Global declarations */ | |
131 | ||
132 | #define BUFLEN 1024 | |
133 | #define KEYWORD_SIZE 256 | |
134 | #define FROM_PREFIX "From" | |
135 | #define MY_NAME "fakemail" | |
136 | #define NIL ((line_list) NULL) | |
137 | #define INITIAL_LINE_SIZE 200 | |
138 | ||
45c1955d DN |
139 | #ifndef MAIL_PROGRAM_NAME |
140 | #define MAIL_PROGRAM_NAME "/bin/mail" | |
141 | #endif | |
142 | ||
5e3b9a89 | 143 | static const char *my_name; |
6b3ee98a RS |
144 | static char *the_date; |
145 | static char *the_user; | |
146 | static line_list file_preface; | |
147 | static stream_list the_streams; | |
148 | static boolean no_problems = true; | |
149 | ||
5e3b9a89 | 150 | static void fatal (const char *s1) NO_RETURN; |
6b3ee98a RS |
151 | |
152 | #ifdef CURRENT_USER | |
6b3ee98a RS |
153 | static struct passwd *my_entry; |
154 | #define cuserid(s) \ | |
155 | (my_entry = getpwuid (((int) geteuid ())), \ | |
156 | my_entry->pw_name) | |
157 | #endif | |
158 | \f | |
159 | /* Utilities */ | |
160 | ||
161 | /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
162 | ||
163 | static void | |
5e3b9a89 | 164 | error (const char *s1, const char *s2) |
6b3ee98a RS |
165 | { |
166 | printf ("%s: ", my_name); | |
167 | printf (s1, s2); | |
168 | printf ("\n"); | |
169 | no_problems = false; | |
170 | } | |
171 | ||
172 | /* Print error message and exit. */ | |
173 | ||
174 | static void | |
5e3b9a89 | 175 | fatal (const char *s1) |
6b3ee98a | 176 | { |
5a84ed33 | 177 | error ("%s", s1); |
65396510 | 178 | exit (EXIT_FAILURE); |
6b3ee98a RS |
179 | } |
180 | ||
181 | /* Like malloc but get fatal error if memory is exhausted. */ | |
182 | ||
65119039 | 183 | static long * |
873fbd0b | 184 | xmalloc (int size) |
6b3ee98a | 185 | { |
65119039 RS |
186 | long *result = (long *) malloc (((unsigned) size)); |
187 | if (result == ((long *) NULL)) | |
5a84ed33 | 188 | fatal ("virtual memory exhausted"); |
6b3ee98a RS |
189 | return result; |
190 | } | |
191 | ||
65119039 | 192 | static long * |
873fbd0b | 193 | xrealloc (long int *ptr, int size) |
6b3ee98a | 194 | { |
65119039 | 195 | long *result = (long *) realloc (ptr, ((unsigned) size)); |
5391a863 | 196 | if (result == ((long *) NULL)) |
6b3ee98a RS |
197 | fatal ("virtual memory exhausted"); |
198 | return result; | |
199 | } | |
200 | \f | |
201 | /* Initialize a linebuffer for use */ | |
202 | ||
b23b5a5b | 203 | static void |
873fbd0b | 204 | init_linebuffer (struct linebuffer *linebuffer) |
6b3ee98a RS |
205 | { |
206 | linebuffer->size = INITIAL_LINE_SIZE; | |
207 | linebuffer->buffer = ((char *) xmalloc (INITIAL_LINE_SIZE)); | |
208 | } | |
209 | ||
210 | /* Read a line of text from `stream' into `linebuffer'. | |
594aa066 | 211 | Return the length of the line. */ |
6b3ee98a | 212 | |
b23b5a5b | 213 | static long |
873fbd0b | 214 | readline (struct linebuffer *linebuffer, FILE *stream) |
6b3ee98a RS |
215 | { |
216 | char *buffer = linebuffer->buffer; | |
217 | char *p = linebuffer->buffer; | |
218 | char *end = p + linebuffer->size; | |
219 | ||
220 | while (true) | |
221 | { | |
222 | int c = getc (stream); | |
223 | if (p == end) | |
224 | { | |
225 | linebuffer->size *= 2; | |
26df3bb0 | 226 | buffer = ((char *) xrealloc ((long *)buffer, linebuffer->size)); |
f3309b68 | 227 | p = buffer + (p - linebuffer->buffer); |
1ddb6978 | 228 | end = buffer + linebuffer->size; |
6b3ee98a RS |
229 | linebuffer->buffer = buffer; |
230 | } | |
231 | if (c < 0 || c == '\n') | |
232 | { | |
233 | *p = 0; | |
234 | break; | |
235 | } | |
236 | *p++ = c; | |
237 | } | |
238 | ||
239 | return p - buffer; | |
240 | } | |
241 | \f | |
3d23b985 RS |
242 | /* Extract a colon-terminated keyword from the string FIELD. |
243 | Return that keyword as a string stored in a static buffer. | |
244 | Store the address of the rest of the string into *REST. | |
245 | ||
246 | If there is no keyword, return NULL and don't alter *REST. */ | |
247 | ||
b23b5a5b | 248 | static char * |
873fbd0b | 249 | get_keyword (register char *field, char **rest) |
6b3ee98a RS |
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 | ||
b23b5a5b | 273 | static boolean |
873fbd0b | 274 | has_keyword (char *field) |
6b3ee98a RS |
275 | { |
276 | char *ignored; | |
277 | return (get_keyword (field, &ignored) != ((char *) NULL)); | |
278 | } | |
279 | ||
3d23b985 RS |
280 | /* Store the string FIELD, followed by any lines in THE_LIST, |
281 | into the buffer WHERE. | |
282 | Concatenate lines, putting just a space between them. | |
283 | Delete everything contained in parentheses. | |
284 | When a recipient name contains <...>, we discard | |
285 | everything except what is inside the <...>. | |
286 | ||
287 | We don't pay attention to overflowing WHERE; | |
288 | the caller has to make it big enough. */ | |
289 | ||
b23b5a5b | 290 | static char * |
873fbd0b | 291 | add_field (line_list the_list, register char *field, register char *where) |
6b3ee98a RS |
292 | { |
293 | register char c; | |
294 | while (true) | |
295 | { | |
3d23b985 RS |
296 | char *this_recipient_where; |
297 | int in_quotes = 0; | |
298 | ||
6b3ee98a | 299 | *where++ = ' '; |
3d23b985 RS |
300 | this_recipient_where = where; |
301 | ||
6b3ee98a RS |
302 | while ((c = *field++) != '\0') |
303 | { | |
3d23b985 RS |
304 | if (c == '\\') |
305 | *where++ = c; | |
306 | else if (c == '"') | |
307 | { | |
308 | in_quotes = ! in_quotes; | |
309 | *where++ = c; | |
310 | } | |
311 | else if (in_quotes) | |
312 | *where++ = c; | |
313 | else if (c == '(') | |
6b3ee98a RS |
314 | { |
315 | while (*field && *field != ')') ++field; | |
3d23b985 RS |
316 | if (! (*field++)) break; /* no close */ |
317 | continue; | |
6b3ee98a | 318 | } |
3d23b985 RS |
319 | else if (c == ',') |
320 | { | |
321 | *where++ = ' '; | |
322 | /* When we get to the end of one recipient, | |
323 | don't discard it if the next one has <...>. */ | |
324 | this_recipient_where = where; | |
325 | } | |
326 | else if (c == '<') | |
327 | /* Discard everything we got before the `<'. */ | |
328 | where = this_recipient_where; | |
329 | else if (c == '>') | |
330 | /* Discard the rest of this name that follows the `>'. */ | |
331 | { | |
332 | while (*field && *field != ',') ++field; | |
333 | if (! (*field++)) break; /* no comma */ | |
334 | continue; | |
335 | } | |
336 | else | |
337 | *where++ = c; | |
6b3ee98a RS |
338 | } |
339 | if (the_list == NIL) break; | |
340 | field = the_list->string; | |
341 | the_list = the_list->continuation; | |
342 | } | |
343 | return where; | |
344 | } | |
345 | \f | |
b23b5a5b | 346 | static line_list |
873fbd0b | 347 | make_file_preface (void) |
6b3ee98a RS |
348 | { |
349 | char *the_string, *temp; | |
350 | long idiotic_interface; | |
f5565804 | 351 | struct tm *tm; |
6b3ee98a RS |
352 | long prefix_length; |
353 | long user_length; | |
354 | long date_length; | |
355 | line_list result; | |
356 | ||
357 | prefix_length = strlen (FROM_PREFIX); | |
358 | time (&idiotic_interface); | |
f5565804 PE |
359 | /* Convert to a string, checking for out-of-range time stamps. |
360 | Don't use 'ctime', as that might dump core if the hardware clock | |
361 | is set to a bizarre value. */ | |
362 | tm = localtime (&idiotic_interface); | |
d65b4235 PE |
363 | if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year) |
364 | && (the_date = asctime (tm)))) | |
5a84ed33 | 365 | fatal ("current time is out of range"); |
6b3ee98a RS |
366 | /* the_date has an unwanted newline at the end */ |
367 | date_length = strlen (the_date) - 1; | |
368 | the_date[date_length] = '\0'; | |
369 | temp = cuserid ((char *) NULL); | |
370 | user_length = strlen (temp); | |
371 | the_user = alloc_string (user_length + 1); | |
372 | strcpy (the_user, temp); | |
7543028e RS |
373 | the_string = alloc_string (3 + prefix_length |
374 | + user_length | |
375 | + date_length); | |
6b3ee98a RS |
376 | temp = the_string; |
377 | strcpy (temp, FROM_PREFIX); | |
378 | temp = &temp[prefix_length]; | |
379 | *temp++ = ' '; | |
380 | strcpy (temp, the_user); | |
381 | temp = &temp[user_length]; | |
382 | *temp++ = ' '; | |
383 | strcpy (temp, the_date); | |
384 | result = new_list (); | |
385 | result->string = the_string; | |
386 | result->continuation = ((line_list) NULL); | |
387 | return result; | |
388 | } | |
389 | ||
b23b5a5b | 390 | static void |
873fbd0b | 391 | write_line_list (register line_list the_list, FILE *the_stream) |
6b3ee98a RS |
392 | { |
393 | for ( ; | |
394 | the_list != ((line_list) NULL) ; | |
395 | the_list = the_list->continuation) | |
396 | { | |
397 | fputs (the_list->string, the_stream); | |
398 | putc ('\n', the_stream); | |
399 | } | |
400 | return; | |
401 | } | |
402 | \f | |
b23b5a5b | 403 | static int |
873fbd0b | 404 | close_the_streams (void) |
6b3ee98a RS |
405 | { |
406 | register stream_list rem; | |
407 | for (rem = the_streams; | |
408 | rem != ((stream_list) NULL); | |
409 | rem = rem->rest_streams) | |
a4fe4e89 PE |
410 | if (no_problems && (*rem->action) (rem->handle) != 0) |
411 | error ("output error", NULL); | |
6b3ee98a | 412 | the_streams = ((stream_list) NULL); |
65396510 | 413 | return (no_problems ? EXIT_SUCCESS : EXIT_FAILURE); |
6b3ee98a RS |
414 | } |
415 | ||
b23b5a5b | 416 | static void |
b8463cbf | 417 | add_a_stream (FILE *the_stream, int (*closing_action) (FILE *)) |
6b3ee98a RS |
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 | ||
b23b5a5b | 427 | static int |
873fbd0b | 428 | my_fclose (FILE *the_file) |
6b3ee98a RS |
429 | { |
430 | putc ('\n', the_file); | |
431 | fflush (the_file); | |
a4fe4e89 PE |
432 | if (ferror (the_file)) |
433 | return EOF; | |
6b3ee98a RS |
434 | return fclose (the_file); |
435 | } | |
436 | ||
b23b5a5b | 437 | static boolean |
873fbd0b | 438 | open_a_file (char *name) |
6b3ee98a RS |
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 | ||
b23b5a5b | 452 | static void |
873fbd0b | 453 | put_string (char *s) |
6b3ee98a RS |
454 | { |
455 | register stream_list rem; | |
456 | for (rem = the_streams; | |
457 | rem != ((stream_list) NULL); | |
458 | rem = rem->rest_streams) | |
459 | fputs (s, rem->handle); | |
460 | return; | |
461 | } | |
462 | ||
b23b5a5b | 463 | static void |
5e3b9a89 | 464 | put_line (const char *string) |
6b3ee98a RS |
465 | { |
466 | register stream_list rem; | |
467 | for (rem = the_streams; | |
468 | rem != ((stream_list) NULL); | |
469 | rem = rem->rest_streams) | |
470 | { | |
5e3b9a89 | 471 | const char *s = string; |
a492a5b9 RS |
472 | int column = 0; |
473 | ||
474 | /* Divide STRING into lines. */ | |
475 | while (*s != 0) | |
476 | { | |
5e3b9a89 | 477 | const char *breakpos; |
a492a5b9 | 478 | |
fbffe7d9 | 479 | /* Find the last char that fits. */ |
a492a5b9 RS |
480 | for (breakpos = s; *breakpos && column < 78; ++breakpos) |
481 | { | |
482 | if (*breakpos == '\t') | |
483 | column += 8; | |
484 | else | |
485 | column++; | |
486 | } | |
fbffe7d9 RS |
487 | /* If we didn't reach end of line, break the line. */ |
488 | if (*breakpos) | |
a492a5b9 | 489 | { |
fbffe7d9 RS |
490 | /* Back up to just after the last comma that fits. */ |
491 | while (breakpos != s && breakpos[-1] != ',') --breakpos; | |
492 | ||
493 | if (breakpos == s) | |
494 | { | |
495 | /* If no comma fits, move past the first address anyway. */ | |
496 | while (*breakpos != 0 && *breakpos != ',') ++breakpos; | |
497 | if (*breakpos != 0) | |
498 | /* Include the comma after it. */ | |
499 | ++breakpos; | |
500 | } | |
a492a5b9 RS |
501 | } |
502 | /* Output that much, then break the line. */ | |
a4fe4e89 | 503 | ignore_value (fwrite (s, 1, breakpos - s, rem->handle)); |
a492a5b9 RS |
504 | column = 8; |
505 | ||
506 | /* Skip whitespace and prepare to print more addresses. */ | |
507 | s = breakpos; | |
508 | while (*s == ' ' || *s == '\t') ++s; | |
c1380f31 RS |
509 | if (*s != 0) |
510 | fputs ("\n\t", rem->handle); | |
a492a5b9 | 511 | } |
6b3ee98a RS |
512 | putc ('\n', rem->handle); |
513 | } | |
514 | return; | |
515 | } | |
516 | \f | |
517 | #define mail_error error | |
518 | ||
3d23b985 RS |
519 | /* Handle an FCC field. FIELD is the text of the first line (after |
520 | the header name), and THE_LIST holds the continuation lines if any. | |
521 | Call open_a_file for each file. */ | |
522 | ||
b23b5a5b | 523 | static void |
873fbd0b | 524 | setup_files (register line_list the_list, register char *field) |
6b3ee98a RS |
525 | { |
526 | register char *start; | |
527 | register char c; | |
528 | while (true) | |
529 | { | |
3d23b985 RS |
530 | while (((c = *field) != '\0') |
531 | && (c == ' ' | |
532 | || c == '\t' | |
533 | || c == ',')) | |
6b3ee98a RS |
534 | field += 1; |
535 | if (c != '\0') | |
536 | { | |
537 | start = field; | |
3d23b985 RS |
538 | while (((c = *field) != '\0') |
539 | && c != ' ' | |
540 | && c != '\t' | |
541 | && c != ',') | |
6b3ee98a RS |
542 | field += 1; |
543 | *field = '\0'; | |
544 | if (!open_a_file (start)) | |
545 | mail_error ("Could not open file %s", start); | |
546 | *field = c; | |
547 | if (c != '\0') continue; | |
548 | } | |
3d23b985 RS |
549 | if (the_list == ((line_list) NULL)) |
550 | return; | |
6b3ee98a RS |
551 | field = the_list->string; |
552 | the_list = the_list->continuation; | |
553 | } | |
554 | } | |
555 | \f | |
3d23b985 RS |
556 | /* Compute the total size of all recipient names stored in THE_HEADER. |
557 | The result says how big to make the buffer to pass to parse_header. */ | |
558 | ||
b23b5a5b | 559 | static int |
873fbd0b | 560 | args_size (header the_header) |
6b3ee98a RS |
561 | { |
562 | register header old = the_header; | |
563 | register line_list rem; | |
564 | register int size = 0; | |
565 | do | |
566 | { | |
567 | char *field; | |
568 | register char *keyword = get_keyword (the_header->text->string, &field); | |
3d23b985 RS |
569 | if ((strcmp (keyword, "TO") == 0) |
570 | || (strcmp (keyword, "CC") == 0) | |
571 | || (strcmp (keyword, "BCC") == 0)) | |
6b3ee98a RS |
572 | { |
573 | size += 1 + strlen (field); | |
574 | for (rem = the_header->text->continuation; | |
575 | rem != NIL; | |
576 | rem = rem->continuation) | |
577 | size += 1 + strlen (rem->string); | |
578 | } | |
579 | the_header = the_header->next; | |
580 | } while (the_header != old); | |
581 | return size; | |
582 | } | |
583 | ||
3d23b985 RS |
584 | /* Scan the header described by the lists THE_HEADER, |
585 | and put all recipient names into the buffer WHERE. | |
586 | Precede each recipient name with a space. | |
587 | ||
588 | Also, if the header has any FCC fields, call setup_files for each one. */ | |
589 | ||
b23b5a5b | 590 | static void |
873fbd0b | 591 | parse_header (header the_header, register char *where) |
6b3ee98a RS |
592 | { |
593 | register header old = the_header; | |
594 | do | |
595 | { | |
596 | char *field; | |
597 | register char *keyword = get_keyword (the_header->text->string, &field); | |
598 | if (strcmp (keyword, "TO") == 0) | |
599 | where = add_field (the_header->text->continuation, field, where); | |
600 | else if (strcmp (keyword, "CC") == 0) | |
601 | where = add_field (the_header->text->continuation, field, where); | |
602 | else if (strcmp (keyword, "BCC") == 0) | |
603 | { | |
604 | where = add_field (the_header->text->continuation, field, where); | |
605 | the_header->previous->next = the_header->next; | |
606 | the_header->next->previous = the_header->previous; | |
607 | } | |
608 | else if (strcmp (keyword, "FCC") == 0) | |
609 | setup_files (the_header->text->continuation, field); | |
610 | the_header = the_header->next; | |
611 | } while (the_header != old); | |
612 | *where = '\0'; | |
613 | return; | |
614 | } | |
594aa066 | 615 | \f |
3d23b985 RS |
616 | /* Read lines from the input until we get a blank line. |
617 | Create a list of `header' objects, one for each header field, | |
618 | each of which points to a list of `line_list' objects, | |
619 | one for each line in that field. | |
620 | Continuation lines are grouped in the headers they continue. */ | |
594aa066 | 621 | |
b23b5a5b | 622 | static header |
873fbd0b | 623 | read_header (void) |
6b3ee98a RS |
624 | { |
625 | register header the_header = ((header) NULL); | |
626 | register line_list *next_line = ((line_list *) NULL); | |
627 | ||
628 | init_linebuffer (&lb); | |
629 | ||
630 | do | |
631 | { | |
632 | long length; | |
633 | register char *line; | |
634 | ||
635 | readline (&lb, stdin); | |
636 | line = lb.buffer; | |
637 | length = strlen (line); | |
638 | if (length == 0) break; | |
639 | ||
640 | if (has_keyword (line)) | |
641 | { | |
642 | register header old = the_header; | |
643 | the_header = new_header (); | |
644 | if (old == ((header) NULL)) | |
645 | { | |
646 | the_header->next = the_header; | |
647 | the_header->previous = the_header; | |
648 | } | |
649 | else | |
650 | { | |
651 | the_header->previous = old; | |
652 | the_header->next = old->next; | |
653 | old->next = the_header; | |
654 | } | |
655 | next_line = &(the_header->text); | |
656 | } | |
657 | ||
658 | if (next_line == ((line_list *) NULL)) | |
659 | { | |
660 | /* Not a valid header */ | |
65396510 | 661 | exit (EXIT_FAILURE); |
6b3ee98a RS |
662 | } |
663 | *next_line = new_list (); | |
664 | (*next_line)->string = alloc_string (length); | |
665 | strcpy (((*next_line)->string), line); | |
666 | next_line = &((*next_line)->continuation); | |
667 | *next_line = NIL; | |
668 | ||
669 | } while (true); | |
670 | ||
2ef88a94 RS |
671 | if (! the_header) |
672 | fatal ("input message has no header"); | |
6b3ee98a RS |
673 | return the_header->next; |
674 | } | |
675 | \f | |
b23b5a5b | 676 | static void |
873fbd0b | 677 | write_header (header the_header) |
6b3ee98a RS |
678 | { |
679 | register header old = the_header; | |
680 | do | |
681 | { | |
682 | register line_list the_list; | |
683 | for (the_list = the_header->text; | |
684 | the_list != NIL; | |
685 | the_list = the_list->continuation) | |
686 | put_line (the_list->string); | |
687 | the_header = the_header->next; | |
688 | } while (the_header != old); | |
689 | put_line (""); | |
690 | return; | |
691 | } | |
692 | \f | |
d0dff6e5 | 693 | int |
873fbd0b | 694 | main (int argc, char **argv) |
6b3ee98a RS |
695 | { |
696 | char *command_line; | |
697 | header the_header; | |
698 | long name_length; | |
5e3b9a89 | 699 | const char *mail_program_name; |
6b3ee98a RS |
700 | char buf[BUFLEN + 1]; |
701 | register int size; | |
702 | FILE *the_pipe; | |
703 | ||
6b3ee98a RS |
704 | mail_program_name = getenv ("FAKEMAILER"); |
705 | if (!(mail_program_name && *mail_program_name)) | |
45c1955d | 706 | mail_program_name = MAIL_PROGRAM_NAME; |
6b3ee98a RS |
707 | name_length = strlen (mail_program_name); |
708 | ||
709 | my_name = MY_NAME; | |
710 | the_streams = ((stream_list) NULL); | |
711 | the_date = ((char *) NULL); | |
712 | the_user = ((char *) NULL); | |
713 | ||
714 | the_header = read_header (); | |
715 | command_line = alloc_string (name_length + args_size (the_header)); | |
716 | strcpy (command_line, mail_program_name); | |
717 | parse_header (the_header, &command_line[name_length]); | |
594aa066 | 718 | |
6b3ee98a RS |
719 | the_pipe = popen (command_line, "w"); |
720 | if (the_pipe == ((FILE *) NULL)) | |
721 | fatal ("cannot open pipe to real mailer"); | |
722 | ||
723 | add_a_stream (the_pipe, pclose); | |
724 | ||
725 | write_header (the_header); | |
726 | ||
727 | /* Dump the message itself */ | |
728 | ||
729 | while (!feof (stdin)) | |
730 | { | |
731 | size = fread (buf, 1, BUFLEN, stdin); | |
732 | buf[size] = '\0'; | |
733 | put_string (buf); | |
734 | } | |
735 | ||
a4fe4e89 PE |
736 | if (no_problems && (ferror (stdin) || fclose (stdin) != 0)) |
737 | error ("input error", NULL); | |
738 | ||
6b3ee98a RS |
739 | exit (close_the_streams ()); |
740 | } | |
741 | ||
26528bbc | 742 | #endif /* not MSDOS */ |
6b3ee98a | 743 | #endif /* not BSD 4.2 (or newer) */ |
ab5796a9 | 744 | |
65396510 TTN |
745 | |
746 | /* fakemail.c ends here */ |