1 /* sendmail-like interface to /bin/mail for system V,
2 Copyright (C) 1985, 1994 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
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
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
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.
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
18 the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Synched up with: FSF 19.28. */
26 #if defined (BSD) && !defined (BSD4_1) && !defined (USE_FAKEMAIL)
27 /* This program is not used in BSD, so just avoid loader complaints. */
29 main (int argc, char *argv[])
37 main (int argc, char *argv[])
39 /* Linux /bin/mail, if it exists, is NOT the Unix v7 mail that
40 fakemail depends on! This causes garbled mail. Better to
41 output an error message. */
42 fprintf (stderr, "Sorry, fakemail does not work on Linux.\n");
43 fprintf (stderr, "Make sure you have the sendmail program, and\n");
44 fprintf (stderr, "set the Lisp variable `sendmail-program' to point\n");
45 fprintf (stderr, "to the path of the sendmail binary.\n");
48 #else /* not BSD 4.2 (or newer) */
51 main (int argc, char *argv[])
56 /* This conditional contains all the rest of the file. */
58 /* These are defined in config in some versions. */
72 #if __STDC__ || defined(STDC_HEADERS)
81 /* Type definitions */
92 struct line_record *continuation;
94 typedef struct line_record *line_list;
99 struct header_record *next;
100 struct header_record *previous;
102 typedef struct header_record *header;
107 int (*action)(FILE *);
108 struct stream_record *rest_streams;
110 typedef struct stream_record *stream_list;
112 /* A `struct linebuffer' is a structure which holds a line of text.
113 * `readline' reads a line from a stream into a linebuffer
114 * and works regardless of the length of the line.
123 struct linebuffer lb;
126 ((line_list) xmalloc (sizeof (struct line_record)))
127 #define new_header() \
128 ((header) xmalloc (sizeof (struct header_record)))
129 #define new_stream() \
130 ((stream_list) xmalloc (sizeof (struct stream_record)))
131 #define alloc_string(nchars) \
132 ((char *) xmalloc ((nchars) + 1))
134 /* Global declarations */
137 #define KEYWORD_SIZE 256
138 #define FROM_PREFIX "From"
139 #define MY_NAME "fakemail"
140 #define NIL ((line_list) NULL)
141 #define INITIAL_LINE_SIZE 200
143 #ifndef MAIL_PROGRAM_NAME
144 #define MAIL_PROGRAM_NAME "/bin/mail"
147 static const char *my_name;
148 static char *the_date;
149 static char *the_user;
150 static line_list file_preface;
151 static stream_list the_streams;
152 static boolean no_problems = true;
154 #if !__STDC__ && !defined(STDC_HEADERS)
155 extern FILE *popen ();
156 extern int fclose (), pclose ();
157 extern char *malloc (), *realloc ();
161 extern struct passwd *getpwuid ();
162 extern unsigned short geteuid ();
163 static struct passwd *my_entry;
165 (my_entry = getpwuid ((int) geteuid ()), \
171 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
174 error (const char *s1, const char *s2)
176 printf ("%s: ", my_name);
182 /* Print error message and exit. */
185 fatal (const char *s1, const char *s2)
191 /* Like malloc but get fatal error if memory is exhausted. */
194 xmalloc (size_t size)
196 void *result = malloc (size);
198 fatal ("virtual memory exhausted", (char *) 0);
203 xrealloc (void *ptr, size_t size)
205 void *result = realloc (ptr, size);
207 fatal ("virtual memory exhausted", (char *) 0);
211 /* Initialize a linebuffer for use */
214 init_linebuffer (struct linebuffer *linebuffer)
216 linebuffer->size = INITIAL_LINE_SIZE;
217 linebuffer->buffer = (char *) xmalloc (INITIAL_LINE_SIZE);
220 /* Read a line of text from `stream' into `linebuffer'.
221 * Return the length of the line.
225 readline (struct linebuffer *linebuffer, FILE *stream)
227 char *buffer = linebuffer->buffer;
228 char *p = linebuffer->buffer;
229 char *end = p + linebuffer->size;
233 int c = getc (stream);
236 linebuffer->size *= 2;
237 buffer = (char *) xrealloc (buffer, linebuffer->size);
238 p = buffer + (p - linebuffer->buffer);
239 end = buffer + linebuffer->size;
240 linebuffer->buffer = buffer;
242 if (c < 0 || c == '\n')
254 get_keyword (register char *field, char **rest)
256 static char keyword[KEYWORD_SIZE];
262 if ((isspace ((int) (unsigned char) c)) || (c == ':'))
263 return (char *) NULL;
264 *ptr++ = ((islower ((int) (unsigned char) c)) ?
265 (toupper ((int) (unsigned char) c)) : c);
266 while (((c = *field++) != ':') &&
267 (!(isspace ((int) (unsigned char) c))))
268 *ptr++ = ((islower ((int) (unsigned char) c)) ?
269 (toupper ((int) (unsigned char) c)) : c);
271 while (isspace ((int) (unsigned char) c)) c = *field++;
272 if (c != ':') return (char *) NULL;
278 has_keyword (char *field)
281 return (get_keyword (field, &ignored) != (char *) NULL);
285 add_field (line_list the_list, register char *field, register char *where)
291 while ((c = *field++) != '\0')
295 while (*field && *field != ')') ++field;
296 if (! (*field++)) break; /* no closer */
297 if (! (*field)) break; /* closerNULL */
300 *where++ = ((c == ','||c=='>'||c=='<') ? ' ' : c);
302 if (the_list == NIL) break;
303 field = the_list->string;
304 the_list = the_list->continuation;
310 make_file_preface (void)
312 char *the_string, *temp;
313 long idiotic_interface;
319 prefix_length = strlen (FROM_PREFIX);
320 time (&idiotic_interface);
321 the_date = ctime (&idiotic_interface);
322 /* the_date has an unwanted newline at the end */
323 date_length = strlen (the_date) - 1;
324 the_date[date_length] = '\0';
328 temp = cuserid ((char *) NULL);
330 user_length = strlen (temp);
331 the_user = alloc_string ((size_t) (user_length + 1));
332 strcpy (the_user, temp);
333 the_string = alloc_string ((size_t) (3 + prefix_length +
337 strcpy (temp, FROM_PREFIX);
338 temp = &temp[prefix_length];
340 strcpy (temp, the_user);
341 temp = &temp[user_length];
343 strcpy (temp, the_date);
344 result = new_list ();
345 result->string = the_string;
346 result->continuation = ((line_list) NULL);
351 write_line_list (register line_list the_list, FILE *the_stream)
354 the_list != ((line_list) NULL) ;
355 the_list = the_list->continuation)
357 fputs (the_list->string, the_stream);
358 putc ('\n', the_stream);
364 close_the_streams (void)
366 register stream_list rem;
367 for (rem = the_streams;
368 rem != ((stream_list) NULL);
369 rem = rem->rest_streams)
370 no_problems = (no_problems &&
371 ((*rem->action) (rem->handle) == 0));
372 the_streams = ((stream_list) NULL);
373 return (no_problems ? 0 : 1);
377 add_a_stream (FILE *the_stream, int (*closing_action)(FILE *))
379 stream_list old = the_streams;
380 the_streams = new_stream ();
381 the_streams->handle = the_stream;
382 the_streams->action = closing_action;
383 the_streams->rest_streams = old;
388 my_fclose (FILE *the_file)
390 putc ('\n', the_file);
392 return fclose (the_file);
396 open_a_file (char *name)
398 FILE *the_stream = fopen (name, "a");
399 if (the_stream != ((FILE *) NULL))
401 add_a_stream (the_stream, my_fclose);
402 if (the_user == (char *) NULL)
403 file_preface = make_file_preface ();
404 write_line_list (file_preface, the_stream);
413 register stream_list rem;
414 for (rem = the_streams;
415 rem != ((stream_list) NULL);
416 rem = rem->rest_streams)
417 fputs (s, rem->handle);
422 put_line (const char *string)
424 register stream_list rem;
425 for (rem = the_streams;
426 rem != ((stream_list) NULL);
427 rem = rem->rest_streams)
429 const char *s = string;
432 /* Divide STRING into lines. */
435 const char *breakpos;
437 /* Find the last char that fits. */
438 for (breakpos = s; *breakpos && column < 78; ++breakpos)
440 if (*breakpos == '\t')
445 /* If we didn't reach end of line, break the line. */
448 /* Back up to just after the last comma that fits. */
449 while (breakpos != s && breakpos[-1] != ',') --breakpos;
453 /* If no comma fits, move past the first address anyway. */
454 while (*breakpos != 0 && *breakpos != ',') ++breakpos;
456 /* Include the comma after it. */
460 /* Output that much, then break the line. */
461 fwrite (s, 1, breakpos - s, rem->handle);
464 /* Skip whitespace and prepare to print more addresses. */
466 while (*s == ' ' || *s == '\t') ++s;
468 fputs ("\n\t", rem->handle);
470 putc ('\n', rem->handle);
475 #define mail_error error
478 setup_files (register line_list the_list, register char *field)
480 register char *start;
484 while (((c = *field) != '\0') &&
492 while (((c = *field) != '\0') &&
498 if (!open_a_file (start))
499 mail_error ("Could not open file %s", start);
501 if (c != '\0') continue;
503 if (the_list == ((line_list) NULL)) return;
504 field = the_list->string;
505 the_list = the_list->continuation;
510 args_size (header the_header)
512 register header old = the_header;
513 register line_list rem;
514 register int size = 0;
518 register char *keyword = get_keyword (the_header->text->string, &field);
519 if ((strcmp (keyword, "TO") == 0) ||
520 (strcmp (keyword, "CC") == 0) ||
521 (strcmp (keyword, "BCC") == 0))
523 size += 1 + strlen (field);
524 for (rem = the_header->text->continuation;
526 rem = rem->continuation)
527 size += 1 + strlen (rem->string);
529 the_header = the_header->next;
530 } while (the_header != old);
535 parse_header (header the_header, register char *where)
537 register header old = the_header;
541 register char *keyword = get_keyword (the_header->text->string, &field);
542 if (strcmp (keyword, "TO") == 0)
543 where = add_field (the_header->text->continuation, field, where);
544 else if (strcmp (keyword, "CC") == 0)
545 where = add_field (the_header->text->continuation, field, where);
546 else if (strcmp (keyword, "BCC") == 0)
548 where = add_field (the_header->text->continuation, field, where);
549 the_header->previous->next = the_header->next;
550 the_header->next->previous = the_header->previous;
552 else if (strcmp (keyword, "FCC") == 0)
553 setup_files (the_header->text->continuation, field);
554 the_header = the_header->next;
555 } while (the_header != old);
563 register header the_header = ((header) NULL);
564 register line_list *next_line = ((line_list *) NULL);
566 init_linebuffer (&lb);
573 readline (&lb, stdin);
575 length = strlen (line);
576 if (length == 0) break;
578 if (has_keyword (line))
580 register header old = the_header;
581 the_header = new_header ();
582 if (old == ((header) NULL))
584 the_header->next = the_header;
585 the_header->previous = the_header;
589 the_header->previous = old;
590 the_header->next = old->next;
591 old->next = the_header;
593 next_line = &(the_header->text);
596 if (next_line == ((line_list *) NULL))
598 /* Not a valid header */
601 *next_line = new_list ();
602 (*next_line)->string = alloc_string ((size_t) length);
603 strcpy (((*next_line)->string), line);
604 next_line = &((*next_line)->continuation);
609 return the_header->next;
613 write_header (header the_header)
615 register header old = the_header;
618 register line_list the_list;
619 for (the_list = the_header->text;
621 the_list = the_list->continuation)
622 put_line (the_list->string);
623 the_header = the_header->next;
624 } while (the_header != old);
630 main (int argc, char *argv[])
635 char *mail_program_name;
636 char buf[BUFLEN + 1];
640 mail_program_name = getenv ("FAKEMAILER");
641 if (!(mail_program_name && *mail_program_name))
642 mail_program_name = (char *) MAIL_PROGRAM_NAME;
643 name_length = strlen (mail_program_name);
646 the_streams = ((stream_list) NULL);
647 the_date = (char *) NULL;
648 the_user = (char *) NULL;
650 the_header = read_header ();
651 command_line = alloc_string ((size_t) (name_length +
652 args_size (the_header)));
653 strcpy (command_line, mail_program_name);
654 parse_header (the_header, &command_line[name_length]);
656 the_pipe = popen (command_line, "w");
657 if (the_pipe == ((FILE *) NULL))
658 fatal ("cannot open pipe to real mailer", (char *) NULL);
660 add_a_stream (the_pipe, pclose);
662 write_header (the_header);
664 /* Dump the message itself */
666 while (!feof (stdin))
668 size = fread (buf, 1, BUFLEN, stdin);
673 return close_the_streams ();
676 #endif /* not MSDOS */
677 #endif /* not BSD 4.2 (or newer) */