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0
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1 /* sendmail-like interface to /bin/mail for system V,
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2 Copyright (C) 1985, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GNU Emacs; see the file COPYING. If not, write to
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18 the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.28. */
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22
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23 #define NO_SHORTNAMES
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398
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24 #include <config.h>
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0
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25
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26 #if defined (BSD) && !defined (BSD4_1) && !defined (USE_FAKEMAIL)
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396
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27 /* This program is not used in BSD, so just avoid loader complaints. */
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215
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28 int
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396
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29 main (int argc, char *argv[])
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0
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30 {
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215
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31 return 0;
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0
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32 }
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33 #elif defined (LINUX)
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34 #include <stdio.h>
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35 #include <stdlib.h>
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215
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36 int
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396
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37 main (int argc, char *argv[])
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0
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38 {
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39 /* Linux /bin/mail, if it exists, is NOT the Unix v7 mail that
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40 fakemail depends on! This causes garbled mail. Better to
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41 output an error message. */
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42 fprintf (stderr, "Sorry, fakemail does not work on Linux.\n");
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43 fprintf (stderr, "Make sure you have the sendmail program, and\n");
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44 fprintf (stderr, "set the Lisp variable `sendmail-program' to point\n");
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45 fprintf (stderr, "to the path of the sendmail binary.\n");
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215
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46 return 1;
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0
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47 }
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48 #else /* not BSD 4.2 (or newer) */
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49 #ifdef MSDOS
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215
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50 int
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396
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51 main (int argc, char *argv[])
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0
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52 {
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215
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53 return 0;
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0
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54 }
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55 #else /* not MSDOS */
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56 /* This conditional contains all the rest of the file. */
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57
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58 /* These are defined in config in some versions. */
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59
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60 #ifdef static
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61 #undef static
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62 #endif
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63
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64 #ifdef read
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65 #undef read
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66 #undef write
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67 #undef open
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68 #undef close
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69 #endif
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70
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71 #include <stdio.h>
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72 #if __STDC__ || defined(STDC_HEADERS)
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73 #include <stdlib.h>
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74 #include <unistd.h>
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75 #endif
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76 #include <string.h>
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77 #include <ctype.h>
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78 #include <time.h>
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79 #include <pwd.h>
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80
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81 /* Type definitions */
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82
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83 #define boolean int
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84 #define true 1
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85 #define false 0
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86
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87 /* Various lists */
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88
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89 struct line_record
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90 {
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91 char *string;
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92 struct line_record *continuation;
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93 };
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94 typedef struct line_record *line_list;
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95
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96 struct header_record
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97 {
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98 line_list text;
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99 struct header_record *next;
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100 struct header_record *previous;
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101 };
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102 typedef struct header_record *header;
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396
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103
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0
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104 struct stream_record
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105 {
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106 FILE *handle;
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396
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107 int (*action)(FILE *);
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0
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108 struct stream_record *rest_streams;
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109 };
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110 typedef struct stream_record *stream_list;
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111
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112 /* A `struct linebuffer' is a structure which holds a line of text.
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113 * `readline' reads a line from a stream into a linebuffer
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114 * and works regardless of the length of the line.
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115 */
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116
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117 struct linebuffer
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118 {
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398
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119 size_t size;
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0
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120 char *buffer;
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121 };
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122
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123 struct linebuffer lb;
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124
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125 #define new_list() \
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126 ((line_list) xmalloc (sizeof (struct line_record)))
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127 #define new_header() \
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128 ((header) xmalloc (sizeof (struct header_record)))
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129 #define new_stream() \
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130 ((stream_list) xmalloc (sizeof (struct stream_record)))
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131 #define alloc_string(nchars) \
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132 ((char *) xmalloc ((nchars) + 1))
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133
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134 /* Global declarations */
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135
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136 #define BUFLEN 1024
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137 #define KEYWORD_SIZE 256
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138 #define FROM_PREFIX "From"
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139 #define MY_NAME "fakemail"
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140 #define NIL ((line_list) NULL)
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141 #define INITIAL_LINE_SIZE 200
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142
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143 #ifndef MAIL_PROGRAM_NAME
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144 #define MAIL_PROGRAM_NAME "/bin/mail"
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145 #endif
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146
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398
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147 static const char *my_name;
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0
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148 static char *the_date;
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149 static char *the_user;
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150 static line_list file_preface;
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151 static stream_list the_streams;
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152 static boolean no_problems = true;
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153
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154 #if !__STDC__ && !defined(STDC_HEADERS)
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155 extern FILE *popen ();
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156 extern int fclose (), pclose ();
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157 extern char *malloc (), *realloc ();
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158 #endif
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159
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160 #ifdef CURRENT_USER
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161 extern struct passwd *getpwuid ();
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162 extern unsigned short geteuid ();
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163 static struct passwd *my_entry;
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164 #define cuserid(s) \
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398
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165 (my_entry = getpwuid ((int) geteuid ()), \
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0
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166 my_entry->pw_name)
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167 #endif
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168
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169 /* Utilities */
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170
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171 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
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172
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173 static void
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398
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174 error (const char *s1, const char *s2)
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0
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175 {
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176 printf ("%s: ", my_name);
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177 printf (s1, s2);
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178 printf ("\n");
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179 no_problems = false;
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180 }
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181
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182 /* Print error message and exit. */
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183
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184 static void
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398
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185 fatal (const char *s1, const char *s2)
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0
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186 {
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187 error (s1, s2);
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188 exit (1);
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189 }
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190
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191 /* Like malloc but get fatal error if memory is exhausted. */
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192
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398
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193 static void *
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396
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194 xmalloc (size_t size)
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0
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195 {
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398
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196 void *result = malloc (size);
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197 if (result == NULL)
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0
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198 fatal ("virtual memory exhausted", (char *) 0);
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199 return result;
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200 }
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201
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398
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202 static void *
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203 xrealloc (void *ptr, size_t size)
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0
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204 {
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398
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205 void *result = realloc (ptr, size);
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206 if (result == NULL)
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0
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207 fatal ("virtual memory exhausted", (char *) 0);
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208 return result;
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209 }
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210
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211 /* Initialize a linebuffer for use */
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212
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213 static void
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214 init_linebuffer (struct linebuffer *linebuffer)
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215 {
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216 linebuffer->size = INITIAL_LINE_SIZE;
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398
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217 linebuffer->buffer = (char *) xmalloc (INITIAL_LINE_SIZE);
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0
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218 }
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219
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220 /* Read a line of text from `stream' into `linebuffer'.
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396
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221 * Return the length of the line.
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0
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222 */
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223
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224 static long
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225 readline (struct linebuffer *linebuffer, FILE *stream)
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226 {
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227 char *buffer = linebuffer->buffer;
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228 char *p = linebuffer->buffer;
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229 char *end = p + linebuffer->size;
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230
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231 while (true)
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232 {
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233 int c = getc (stream);
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234 if (p == end)
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235 {
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236 linebuffer->size *= 2;
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398
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237 buffer = (char *) xrealloc (buffer, linebuffer->size);
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0
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238 p = buffer + (p - linebuffer->buffer);
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239 end = buffer + linebuffer->size;
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240 linebuffer->buffer = buffer;
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241 }
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242 if (c < 0 || c == '\n')
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243 {
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244 *p = 0;
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245 break;
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246 }
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247 *p++ = c;
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248 }
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249
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250 return p - buffer;
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251 }
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252
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253 static char *
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254 get_keyword (register char *field, char **rest)
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255 {
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256 static char keyword[KEYWORD_SIZE];
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257 register char *ptr;
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258 register char c;
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259
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260 ptr = &keyword[0];
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261 c = *field++;
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396
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262 if ((isspace ((int) (unsigned char) c)) || (c == ':'))
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263 return (char *) NULL;
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264 *ptr++ = ((islower ((int) (unsigned char) c)) ?
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265 (toupper ((int) (unsigned char) c)) : c);
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266 while (((c = *field++) != ':') &&
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267 (!(isspace ((int) (unsigned char) c))))
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268 *ptr++ = ((islower ((int) (unsigned char) c)) ?
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269 (toupper ((int) (unsigned char) c)) : c);
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0
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270 *ptr++ = '\0';
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396
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271 while (isspace ((int) (unsigned char) c)) c = *field++;
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272 if (c != ':') return (char *) NULL;
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0
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273 *rest = field;
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274 return &keyword[0];
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275 }
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276
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277 static boolean
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278 has_keyword (char *field)
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279 {
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280 char *ignored;
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398
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281 return (get_keyword (field, &ignored) != (char *) NULL);
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0
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282 }
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283
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284 static char *
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285 add_field (line_list the_list, register char *field, register char *where)
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286 {
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287 register char c;
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288 while (true)
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289 {
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290 *where++ = ' ';
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291 while ((c = *field++) != '\0')
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292 {
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293 if (c == '(')
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294 {
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295 while (*field && *field != ')') ++field;
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296 if (! (*field++)) break; /* no closer */
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297 if (! (*field)) break; /* closerNULL */
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298 c = *field;
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299 }
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300 *where++ = ((c == ','||c=='>'||c=='<') ? ' ' : c);
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301 }
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302 if (the_list == NIL) break;
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303 field = the_list->string;
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304 the_list = the_list->continuation;
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305 }
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306 return where;
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307 }
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308
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309 static line_list
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310 make_file_preface (void)
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311 {
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312 char *the_string, *temp;
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313 long idiotic_interface;
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314 long prefix_length;
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315 long user_length;
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316 long date_length;
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317 line_list result;
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318
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319 prefix_length = strlen (FROM_PREFIX);
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320 time (&idiotic_interface);
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321 the_date = ctime (&idiotic_interface);
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322 /* the_date has an unwanted newline at the end */
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323 date_length = strlen (the_date) - 1;
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324 the_date[date_length] = '\0';
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398
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325 #ifdef WINDOWSNT
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326 temp = "(null)";
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327 #else
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0
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328 temp = cuserid ((char *) NULL);
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398
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329 #endif
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0
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330 user_length = strlen (temp);
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331 the_user = alloc_string ((size_t) (user_length + 1));
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332 strcpy (the_user, temp);
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333 the_string = alloc_string ((size_t) (3 + prefix_length +
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334 user_length +
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335 date_length));
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336 temp = the_string;
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337 strcpy (temp, FROM_PREFIX);
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338 temp = &temp[prefix_length];
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339 *temp++ = ' ';
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340 strcpy (temp, the_user);
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341 temp = &temp[user_length];
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342 *temp++ = ' ';
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343 strcpy (temp, the_date);
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344 result = new_list ();
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345 result->string = the_string;
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346 result->continuation = ((line_list) NULL);
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347 return result;
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348 }
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349
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350 static void
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351 write_line_list (register line_list the_list, FILE *the_stream)
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352 {
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353 for ( ;
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354 the_list != ((line_list) NULL) ;
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355 the_list = the_list->continuation)
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356 {
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357 fputs (the_list->string, the_stream);
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358 putc ('\n', the_stream);
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359 }
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360 return;
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361 }
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362
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363 static int
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364 close_the_streams (void)
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365 {
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366 register stream_list rem;
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367 for (rem = the_streams;
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368 rem != ((stream_list) NULL);
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369 rem = rem->rest_streams)
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370 no_problems = (no_problems &&
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371 ((*rem->action) (rem->handle) == 0));
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372 the_streams = ((stream_list) NULL);
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373 return (no_problems ? 0 : 1);
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374 }
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375
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376 static void
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396
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377 add_a_stream (FILE *the_stream, int (*closing_action)(FILE *))
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0
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378 {
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379 stream_list old = the_streams;
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380 the_streams = new_stream ();
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381 the_streams->handle = the_stream;
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382 the_streams->action = closing_action;
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383 the_streams->rest_streams = old;
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384 return;
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385 }
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386
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387 static int
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388 my_fclose (FILE *the_file)
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389 {
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390 putc ('\n', the_file);
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391 fflush (the_file);
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392 return fclose (the_file);
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393 }
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394
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395 static boolean
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396 open_a_file (char *name)
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397 {
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398 FILE *the_stream = fopen (name, "a");
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399 if (the_stream != ((FILE *) NULL))
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400 {
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401 add_a_stream (the_stream, my_fclose);
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398
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402 if (the_user == (char *) NULL)
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0
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403 file_preface = make_file_preface ();
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404 write_line_list (file_preface, the_stream);
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405 return true;
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406 }
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407 return false;
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408 }
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409
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410 static void
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411 put_string (char *s)
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412 {
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413 register stream_list rem;
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414 for (rem = the_streams;
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415 rem != ((stream_list) NULL);
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416 rem = rem->rest_streams)
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417 fputs (s, rem->handle);
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418 return;
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419 }
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420
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|
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421 static void
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|
398
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422 put_line (const char *string)
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|
0
|
423 {
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424 register stream_list rem;
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425 for (rem = the_streams;
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426 rem != ((stream_list) NULL);
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427 rem = rem->rest_streams)
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428 {
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398
|
429 const char *s = string;
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|
0
|
430 int column = 0;
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|
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431
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|
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432 /* Divide STRING into lines. */
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|
|
433 while (*s != 0)
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|
|
434 {
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|
398
|
435 const char *breakpos;
|
|
0
|
436
|
|
|
437 /* Find the last char that fits. */
|
|
|
438 for (breakpos = s; *breakpos && column < 78; ++breakpos)
|
|
|
439 {
|
|
|
440 if (*breakpos == '\t')
|
|
|
441 column += 8;
|
|
|
442 else
|
|
|
443 column++;
|
|
|
444 }
|
|
|
445 /* If we didn't reach end of line, break the line. */
|
|
|
446 if (*breakpos)
|
|
|
447 {
|
|
|
448 /* Back up to just after the last comma that fits. */
|
|
|
449 while (breakpos != s && breakpos[-1] != ',') --breakpos;
|
|
|
450
|
|
|
451 if (breakpos == s)
|
|
|
452 {
|
|
|
453 /* If no comma fits, move past the first address anyway. */
|
|
|
454 while (*breakpos != 0 && *breakpos != ',') ++breakpos;
|
|
|
455 if (*breakpos != 0)
|
|
|
456 /* Include the comma after it. */
|
|
|
457 ++breakpos;
|
|
|
458 }
|
|
|
459 }
|
|
|
460 /* Output that much, then break the line. */
|
|
|
461 fwrite (s, 1, breakpos - s, rem->handle);
|
|
|
462 column = 8;
|
|
|
463
|
|
|
464 /* Skip whitespace and prepare to print more addresses. */
|
|
|
465 s = breakpos;
|
|
|
466 while (*s == ' ' || *s == '\t') ++s;
|
|
|
467 if (*s != 0)
|
|
|
468 fputs ("\n\t", rem->handle);
|
|
|
469 }
|
|
|
470 putc ('\n', rem->handle);
|
|
|
471 }
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 #define mail_error error
|
|
|
476
|
|
|
477 static void
|
|
|
478 setup_files (register line_list the_list, register char *field)
|
|
|
479 {
|
|
|
480 register char *start;
|
|
|
481 register char c;
|
|
|
482 while (true)
|
|
|
483 {
|
|
|
484 while (((c = *field) != '\0') &&
|
|
|
485 ((c == ' ') ||
|
|
|
486 (c == '\t') ||
|
|
|
487 (c == ',')))
|
|
|
488 field += 1;
|
|
|
489 if (c != '\0')
|
|
|
490 {
|
|
|
491 start = field;
|
|
|
492 while (((c = *field) != '\0') &&
|
|
|
493 (c != ' ') &&
|
|
|
494 (c != '\t') &&
|
|
|
495 (c != ','))
|
|
|
496 field += 1;
|
|
|
497 *field = '\0';
|
|
|
498 if (!open_a_file (start))
|
|
|
499 mail_error ("Could not open file %s", start);
|
|
|
500 *field = c;
|
|
|
501 if (c != '\0') continue;
|
|
|
502 }
|
|
|
503 if (the_list == ((line_list) NULL)) return;
|
|
|
504 field = the_list->string;
|
|
|
505 the_list = the_list->continuation;
|
|
|
506 }
|
|
|
507 }
|
|
|
508
|
|
|
509 static int
|
|
|
510 args_size (header the_header)
|
|
|
511 {
|
|
|
512 register header old = the_header;
|
|
|
513 register line_list rem;
|
|
|
514 register int size = 0;
|
|
|
515 do
|
|
|
516 {
|
|
|
517 char *field;
|
|
|
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))
|
|
|
522 {
|
|
|
523 size += 1 + strlen (field);
|
|
|
524 for (rem = the_header->text->continuation;
|
|
|
525 rem != NIL;
|
|
|
526 rem = rem->continuation)
|
|
|
527 size += 1 + strlen (rem->string);
|
|
|
528 }
|
|
|
529 the_header = the_header->next;
|
|
|
530 } while (the_header != old);
|
|
|
531 return size;
|
|
|
532 }
|
|
|
533
|
|
|
534 static void
|
|
|
535 parse_header (header the_header, register char *where)
|
|
|
536 {
|
|
|
537 register header old = the_header;
|
|
|
538 do
|
|
|
539 {
|
|
|
540 char *field;
|
|
|
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)
|
|
|
547 {
|
|
|
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;
|
|
|
551 }
|
|
|
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);
|
|
|
556 *where = '\0';
|
|
|
557 return;
|
|
|
558 }
|
|
396
|
559
|
|
0
|
560 static header
|
|
|
561 read_header (void)
|
|
|
562 {
|
|
|
563 register header the_header = ((header) NULL);
|
|
|
564 register line_list *next_line = ((line_list *) NULL);
|
|
|
565
|
|
|
566 init_linebuffer (&lb);
|
|
|
567
|
|
|
568 do
|
|
|
569 {
|
|
|
570 long length;
|
|
|
571 register char *line;
|
|
|
572
|
|
|
573 readline (&lb, stdin);
|
|
|
574 line = lb.buffer;
|
|
|
575 length = strlen (line);
|
|
|
576 if (length == 0) break;
|
|
|
577
|
|
|
578 if (has_keyword (line))
|
|
|
579 {
|
|
|
580 register header old = the_header;
|
|
|
581 the_header = new_header ();
|
|
|
582 if (old == ((header) NULL))
|
|
|
583 {
|
|
|
584 the_header->next = the_header;
|
|
|
585 the_header->previous = the_header;
|
|
|
586 }
|
|
|
587 else
|
|
|
588 {
|
|
|
589 the_header->previous = old;
|
|
|
590 the_header->next = old->next;
|
|
|
591 old->next = the_header;
|
|
|
592 }
|
|
|
593 next_line = &(the_header->text);
|
|
|
594 }
|
|
|
595
|
|
|
596 if (next_line == ((line_list *) NULL))
|
|
|
597 {
|
|
|
598 /* Not a valid header */
|
|
|
599 exit (1);
|
|
|
600 }
|
|
|
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);
|
|
|
605 *next_line = NIL;
|
|
|
606
|
|
|
607 } while (true);
|
|
|
608
|
|
|
609 return the_header->next;
|
|
|
610 }
|
|
|
611
|
|
|
612 static void
|
|
|
613 write_header (header the_header)
|
|
|
614 {
|
|
|
615 register header old = the_header;
|
|
|
616 do
|
|
|
617 {
|
|
|
618 register line_list the_list;
|
|
|
619 for (the_list = the_header->text;
|
|
|
620 the_list != NIL;
|
|
|
621 the_list = the_list->continuation)
|
|
|
622 put_line (the_list->string);
|
|
|
623 the_header = the_header->next;
|
|
|
624 } while (the_header != old);
|
|
|
625 put_line ("");
|
|
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
215
|
629 int
|
|
396
|
630 main (int argc, char *argv[])
|
|
0
|
631 {
|
|
|
632 char *command_line;
|
|
|
633 header the_header;
|
|
|
634 long name_length;
|
|
|
635 char *mail_program_name;
|
|
|
636 char buf[BUFLEN + 1];
|
|
|
637 register int size;
|
|
|
638 FILE *the_pipe;
|
|
|
639
|
|
|
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);
|
|
|
644
|
|
|
645 my_name = MY_NAME;
|
|
|
646 the_streams = ((stream_list) NULL);
|
|
398
|
647 the_date = (char *) NULL;
|
|
|
648 the_user = (char *) NULL;
|
|
0
|
649
|
|
|
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]);
|
|
396
|
655
|
|
0
|
656 the_pipe = popen (command_line, "w");
|
|
|
657 if (the_pipe == ((FILE *) NULL))
|
|
398
|
658 fatal ("cannot open pipe to real mailer", (char *) NULL);
|
|
0
|
659
|
|
|
660 add_a_stream (the_pipe, pclose);
|
|
|
661
|
|
|
662 write_header (the_header);
|
|
|
663
|
|
|
664 /* Dump the message itself */
|
|
|
665
|
|
|
666 while (!feof (stdin))
|
|
|
667 {
|
|
|
668 size = fread (buf, 1, BUFLEN, stdin);
|
|
|
669 buf[size] = '\0';
|
|
|
670 put_string (buf);
|
|
|
671 }
|
|
|
672
|
|
215
|
673 return close_the_streams ();
|
|
0
|
674 }
|
|
|
675
|
|
|
676 #endif /* not MSDOS */
|
|
|
677 #endif /* not BSD 4.2 (or newer) */
|
