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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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24 #include <../src/config.h>
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25
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26 #if defined (BSD) && !defined (BSD4_1) && !defined (USE_FAKEMAIL)
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27 /* This program isnot used in BSD, so just avoid loader complaints. */
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215
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28 int
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0
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29 main ()
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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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0
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37 main ()
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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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0
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51 main ()
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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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103
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104 struct stream_record
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105 {
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106 FILE *handle;
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107 int (*action)();
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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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119 long size;
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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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147 static CONST char *my_name;
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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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165 (my_entry = getpwuid (((int) geteuid ())), \
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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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174 error (CONST char *s1, CONST char *s2)
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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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185 fatal (CONST char *s1, CONST char *s2)
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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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193 static char *
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194 xmalloc (size)
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195 size_t size;
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196 {
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197 char *result = malloc (((unsigned) size));
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198 if (result == ((char *) NULL))
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199 fatal ("virtual memory exhausted", (char *) 0);
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200 return result;
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201 }
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202
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203 static char *
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204 xrealloc (ptr, size)
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205 char *ptr;
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206 size_t size;
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207 {
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208 char *result = realloc (ptr, ((unsigned) size));
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209 if (result == ((char *) NULL))
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210 fatal ("virtual memory exhausted", (char *) 0);
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211 return result;
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212 }
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213
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214 /* Initialize a linebuffer for use */
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215
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216 static void
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217 init_linebuffer (struct linebuffer *linebuffer)
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218 {
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219 linebuffer->size = INITIAL_LINE_SIZE;
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220 linebuffer->buffer = ((char *) xmalloc (INITIAL_LINE_SIZE));
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221 }
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222
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223 /* Read a line of text from `stream' into `linebuffer'.
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224 * Return the length of the line.
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225 */
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226
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227 static long
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228 readline (struct linebuffer *linebuffer, FILE *stream)
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229 {
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230 char *buffer = linebuffer->buffer;
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231 char *p = linebuffer->buffer;
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232 char *end = p + linebuffer->size;
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233
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234 while (true)
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235 {
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236 int c = getc (stream);
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237 if (p == end)
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238 {
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239 linebuffer->size *= 2;
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240 buffer = ((char *) xrealloc ((char *) buffer,
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241 (size_t) (linebuffer->size)));
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242 p = buffer + (p - linebuffer->buffer);
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243 end = buffer + linebuffer->size;
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244 linebuffer->buffer = buffer;
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245 }
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246 if (c < 0 || c == '\n')
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247 {
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248 *p = 0;
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249 break;
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250 }
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251 *p++ = c;
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252 }
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253
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254 return p - buffer;
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255 }
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256
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257 static char *
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258 get_keyword (register char *field, char **rest)
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259 {
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260 static char keyword[KEYWORD_SIZE];
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261 register char *ptr;
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262 register char c;
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263
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264 ptr = &keyword[0];
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265 c = *field++;
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266 if ((isspace (c)) || (c == ':'))
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267 return ((char *) NULL);
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268 *ptr++ = ((islower (c)) ? (toupper (c)) : c);
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269 while (((c = *field++) != ':') && (!(isspace (c))))
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270 *ptr++ = ((islower (c)) ? (toupper (c)) : c);
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271 *ptr++ = '\0';
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272 while (isspace (c)) c = *field++;
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273 if (c != ':') return ((char *) NULL);
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274 *rest = field;
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275 return &keyword[0];
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276 }
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277
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278 static boolean
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279 has_keyword (char *field)
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280 {
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281 char *ignored;
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282 return (get_keyword (field, &ignored) != ((char *) NULL));
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283 }
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284
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285 static char *
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286 add_field (line_list the_list, register char *field, register char *where)
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287 {
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288 register char c;
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289 while (true)
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290 {
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291 *where++ = ' ';
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292 while ((c = *field++) != '\0')
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293 {
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294 if (c == '(')
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295 {
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296 while (*field && *field != ')') ++field;
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297 if (! (*field++)) break; /* no closer */
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298 if (! (*field)) break; /* closerNULL */
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299 c = *field;
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300 }
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301 *where++ = ((c == ','||c=='>'||c=='<') ? ' ' : c);
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302 }
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303 if (the_list == NIL) break;
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304 field = the_list->string;
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305 the_list = the_list->continuation;
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306 }
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307 return where;
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308 }
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309
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310 static line_list
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311 make_file_preface (void)
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312 {
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313 char *the_string, *temp;
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314 long idiotic_interface;
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315 long prefix_length;
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316 long user_length;
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317 long date_length;
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318 line_list result;
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319
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320 prefix_length = strlen (FROM_PREFIX);
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321 time (&idiotic_interface);
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322 the_date = ctime (&idiotic_interface);
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323 /* the_date has an unwanted newline at the end */
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324 date_length = strlen (the_date) - 1;
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325 the_date[date_length] = '\0';
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326 temp = cuserid ((char *) NULL);
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327 user_length = strlen (temp);
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328 the_user = alloc_string ((size_t) (user_length + 1));
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329 strcpy (the_user, temp);
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330 the_string = alloc_string ((size_t) (3 + prefix_length +
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331 user_length +
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332 date_length));
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333 temp = the_string;
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334 strcpy (temp, FROM_PREFIX);
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335 temp = &temp[prefix_length];
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336 *temp++ = ' ';
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337 strcpy (temp, the_user);
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338 temp = &temp[user_length];
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339 *temp++ = ' ';
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340 strcpy (temp, the_date);
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341 result = new_list ();
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342 result->string = the_string;
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343 result->continuation = ((line_list) NULL);
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344 return result;
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345 }
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346
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347 static void
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348 write_line_list (register line_list the_list, FILE *the_stream)
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349 {
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350 for ( ;
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351 the_list != ((line_list) NULL) ;
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352 the_list = the_list->continuation)
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353 {
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354 fputs (the_list->string, the_stream);
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355 putc ('\n', the_stream);
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356 }
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357 return;
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358 }
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359
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360 static int
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361 close_the_streams (void)
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362 {
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363 register stream_list rem;
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364 for (rem = the_streams;
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365 rem != ((stream_list) NULL);
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366 rem = rem->rest_streams)
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367 no_problems = (no_problems &&
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368 ((*rem->action) (rem->handle) == 0));
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369 the_streams = ((stream_list) NULL);
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370 return (no_problems ? 0 : 1);
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371 }
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372
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373 static void
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374 add_a_stream (FILE *the_stream, int (*closing_action)())
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375 {
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376 stream_list old = the_streams;
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377 the_streams = new_stream ();
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378 the_streams->handle = the_stream;
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379 the_streams->action = closing_action;
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380 the_streams->rest_streams = old;
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381 return;
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382 }
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383
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384 static int
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385 my_fclose (FILE *the_file)
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386 {
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387 putc ('\n', the_file);
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388 fflush (the_file);
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389 return fclose (the_file);
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390 }
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391
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392 static boolean
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393 open_a_file (char *name)
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394 {
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395 FILE *the_stream = fopen (name, "a");
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396 if (the_stream != ((FILE *) NULL))
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397 {
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398 add_a_stream (the_stream, my_fclose);
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399 if (the_user == ((char *) NULL))
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400 file_preface = make_file_preface ();
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401 write_line_list (file_preface, the_stream);
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402 return true;
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403 }
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404 return false;
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405 }
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406
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407 static void
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408 put_string (char *s)
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409 {
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410 register stream_list rem;
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411 for (rem = the_streams;
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412 rem != ((stream_list) NULL);
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413 rem = rem->rest_streams)
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414 fputs (s, rem->handle);
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415 return;
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416 }
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417
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418 static void
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419 put_line (CONST char *string)
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420 {
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421 register stream_list rem;
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422 for (rem = the_streams;
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423 rem != ((stream_list) NULL);
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424 rem = rem->rest_streams)
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425 {
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426 CONST char *s = string;
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427 int column = 0;
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428
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429 /* Divide STRING into lines. */
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430 while (*s != 0)
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431 {
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432 CONST char *breakpos;
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433
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434 /* Find the last char that fits. */
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435 for (breakpos = s; *breakpos && column < 78; ++breakpos)
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436 {
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437 if (*breakpos == '\t')
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438 column += 8;
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439 else
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440 column++;
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441 }
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442 /* If we didn't reach end of line, break the line. */
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443 if (*breakpos)
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444 {
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445 /* Back up to just after the last comma that fits. */
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446 while (breakpos != s && breakpos[-1] != ',') --breakpos;
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447
|
|
|
448 if (breakpos == s)
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|
449 {
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|
|
450 /* If no comma fits, move past the first address anyway. */
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|
|
451 while (*breakpos != 0 && *breakpos != ',') ++breakpos;
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452 if (*breakpos != 0)
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|
453 /* Include the comma after it. */
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454 ++breakpos;
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455 }
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456 }
|
|
|
457 /* Output that much, then break the line. */
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|
458 fwrite (s, 1, breakpos - s, rem->handle);
|
|
|
459 column = 8;
|
|
|
460
|
|
|
461 /* Skip whitespace and prepare to print more addresses. */
|
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|
462 s = breakpos;
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|
|
463 while (*s == ' ' || *s == '\t') ++s;
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|
|
464 if (*s != 0)
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|
465 fputs ("\n\t", rem->handle);
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|
466 }
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|
|
467 putc ('\n', rem->handle);
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|
|
468 }
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469 return;
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|
|
470 }
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|
|
471
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|
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472 #define mail_error error
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473
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474 static void
|
|
|
475 setup_files (register line_list the_list, register char *field)
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476 {
|
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|
477 register char *start;
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|
|
478 register char c;
|
|
|
479 while (true)
|
|
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480 {
|
|
|
481 while (((c = *field) != '\0') &&
|
|
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482 ((c == ' ') ||
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|
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483 (c == '\t') ||
|
|
|
484 (c == ',')))
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485 field += 1;
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|
|
486 if (c != '\0')
|
|
|
487 {
|
|
|
488 start = field;
|
|
|
489 while (((c = *field) != '\0') &&
|
|
|
490 (c != ' ') &&
|
|
|
491 (c != '\t') &&
|
|
|
492 (c != ','))
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|
493 field += 1;
|
|
|
494 *field = '\0';
|
|
|
495 if (!open_a_file (start))
|
|
|
496 mail_error ("Could not open file %s", start);
|
|
|
497 *field = c;
|
|
|
498 if (c != '\0') continue;
|
|
|
499 }
|
|
|
500 if (the_list == ((line_list) NULL)) return;
|
|
|
501 field = the_list->string;
|
|
|
502 the_list = the_list->continuation;
|
|
|
503 }
|
|
|
504 }
|
|
|
505
|
|
|
506 static int
|
|
|
507 args_size (header the_header)
|
|
|
508 {
|
|
|
509 register header old = the_header;
|
|
|
510 register line_list rem;
|
|
|
511 register int size = 0;
|
|
|
512 do
|
|
|
513 {
|
|
|
514 char *field;
|
|
|
515 register char *keyword = get_keyword (the_header->text->string, &field);
|
|
|
516 if ((strcmp (keyword, "TO") == 0) ||
|
|
|
517 (strcmp (keyword, "CC") == 0) ||
|
|
|
518 (strcmp (keyword, "BCC") == 0))
|
|
|
519 {
|
|
|
520 size += 1 + strlen (field);
|
|
|
521 for (rem = the_header->text->continuation;
|
|
|
522 rem != NIL;
|
|
|
523 rem = rem->continuation)
|
|
|
524 size += 1 + strlen (rem->string);
|
|
|
525 }
|
|
|
526 the_header = the_header->next;
|
|
|
527 } while (the_header != old);
|
|
|
528 return size;
|
|
|
529 }
|
|
|
530
|
|
|
531 static void
|
|
|
532 parse_header (header the_header, register char *where)
|
|
|
533 {
|
|
|
534 register header old = the_header;
|
|
|
535 do
|
|
|
536 {
|
|
|
537 char *field;
|
|
|
538 register char *keyword = get_keyword (the_header->text->string, &field);
|
|
|
539 if (strcmp (keyword, "TO") == 0)
|
|
|
540 where = add_field (the_header->text->continuation, field, where);
|
|
|
541 else if (strcmp (keyword, "CC") == 0)
|
|
|
542 where = add_field (the_header->text->continuation, field, where);
|
|
|
543 else if (strcmp (keyword, "BCC") == 0)
|
|
|
544 {
|
|
|
545 where = add_field (the_header->text->continuation, field, where);
|
|
|
546 the_header->previous->next = the_header->next;
|
|
|
547 the_header->next->previous = the_header->previous;
|
|
|
548 }
|
|
|
549 else if (strcmp (keyword, "FCC") == 0)
|
|
|
550 setup_files (the_header->text->continuation, field);
|
|
|
551 the_header = the_header->next;
|
|
|
552 } while (the_header != old);
|
|
|
553 *where = '\0';
|
|
|
554 return;
|
|
|
555 }
|
|
|
556
|
|
|
557 static header
|
|
|
558 read_header (void)
|
|
|
559 {
|
|
|
560 register header the_header = ((header) NULL);
|
|
|
561 register line_list *next_line = ((line_list *) NULL);
|
|
|
562
|
|
|
563 init_linebuffer (&lb);
|
|
|
564
|
|
|
565 do
|
|
|
566 {
|
|
|
567 long length;
|
|
|
568 register char *line;
|
|
|
569
|
|
|
570 readline (&lb, stdin);
|
|
|
571 line = lb.buffer;
|
|
|
572 length = strlen (line);
|
|
|
573 if (length == 0) break;
|
|
|
574
|
|
|
575 if (has_keyword (line))
|
|
|
576 {
|
|
|
577 register header old = the_header;
|
|
|
578 the_header = new_header ();
|
|
|
579 if (old == ((header) NULL))
|
|
|
580 {
|
|
|
581 the_header->next = the_header;
|
|
|
582 the_header->previous = the_header;
|
|
|
583 }
|
|
|
584 else
|
|
|
585 {
|
|
|
586 the_header->previous = old;
|
|
|
587 the_header->next = old->next;
|
|
|
588 old->next = the_header;
|
|
|
589 }
|
|
|
590 next_line = &(the_header->text);
|
|
|
591 }
|
|
|
592
|
|
|
593 if (next_line == ((line_list *) NULL))
|
|
|
594 {
|
|
|
595 /* Not a valid header */
|
|
|
596 exit (1);
|
|
|
597 }
|
|
|
598 *next_line = new_list ();
|
|
|
599 (*next_line)->string = alloc_string ((size_t) length);
|
|
|
600 strcpy (((*next_line)->string), line);
|
|
|
601 next_line = &((*next_line)->continuation);
|
|
|
602 *next_line = NIL;
|
|
|
603
|
|
|
604 } while (true);
|
|
|
605
|
|
|
606 return the_header->next;
|
|
|
607 }
|
|
|
608
|
|
|
609 static void
|
|
|
610 write_header (header the_header)
|
|
|
611 {
|
|
|
612 register header old = the_header;
|
|
|
613 do
|
|
|
614 {
|
|
|
615 register line_list the_list;
|
|
|
616 for (the_list = the_header->text;
|
|
|
617 the_list != NIL;
|
|
|
618 the_list = the_list->continuation)
|
|
|
619 put_line (the_list->string);
|
|
|
620 the_header = the_header->next;
|
|
|
621 } while (the_header != old);
|
|
|
622 put_line ("");
|
|
|
623 return;
|
|
|
624 }
|
|
|
625
|
|
215
|
626 int
|
|
0
|
627 main (argc, argv)
|
|
|
628 int argc;
|
|
|
629 char **argv;
|
|
|
630 {
|
|
|
631 char *command_line;
|
|
|
632 header the_header;
|
|
|
633 long name_length;
|
|
|
634 char *mail_program_name;
|
|
|
635 char buf[BUFLEN + 1];
|
|
|
636 register int size;
|
|
|
637 FILE *the_pipe;
|
|
|
638
|
|
|
639 #if !(__STDC__ || defined(STDC_HEADERS))
|
|
|
640 extern char *getenv ();
|
|
|
641 #endif
|
|
|
642
|
|
|
643 mail_program_name = getenv ("FAKEMAILER");
|
|
|
644 if (!(mail_program_name && *mail_program_name))
|
|
|
645 mail_program_name = (char *) MAIL_PROGRAM_NAME;
|
|
|
646 name_length = strlen (mail_program_name);
|
|
|
647
|
|
|
648 my_name = MY_NAME;
|
|
|
649 the_streams = ((stream_list) NULL);
|
|
|
650 the_date = ((char *) NULL);
|
|
|
651 the_user = ((char *) NULL);
|
|
|
652
|
|
|
653 the_header = read_header ();
|
|
|
654 command_line = alloc_string ((size_t) (name_length +
|
|
|
655 args_size (the_header)));
|
|
|
656 strcpy (command_line, mail_program_name);
|
|
|
657 parse_header (the_header, &command_line[name_length]);
|
|
|
658
|
|
|
659 the_pipe = popen (command_line, "w");
|
|
|
660 if (the_pipe == ((FILE *) NULL))
|
|
|
661 fatal ("cannot open pipe to real mailer", (char *) 0);
|
|
|
662
|
|
|
663 add_a_stream (the_pipe, pclose);
|
|
|
664
|
|
|
665 write_header (the_header);
|
|
|
666
|
|
|
667 /* Dump the message itself */
|
|
|
668
|
|
|
669 while (!feof (stdin))
|
|
|
670 {
|
|
|
671 size = fread (buf, 1, BUFLEN, stdin);
|
|
|
672 buf[size] = '\0';
|
|
|
673 put_string (buf);
|
|
|
674 }
|
|
|
675
|
|
215
|
676 return close_the_streams ();
|
|
0
|
677 }
|
|
|
678
|
|
|
679 #endif /* not MSDOS */
|
|
|
680 #endif /* not BSD 4.2 (or newer) */
|
