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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
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50 /* These are defined in config in some versions. */
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51
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52 #ifdef static
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53 #undef static
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54 #endif
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55
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56 #ifdef read
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57 #undef read
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58 #undef write
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59 #undef open
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60 #undef close
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61 #endif
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62
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63 #include <stdio.h>
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64 #if __STDC__ || defined(STDC_HEADERS)
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65 #include <stdlib.h>
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66 #include <unistd.h>
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67 #endif
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68 #include <string.h>
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69 #include <ctype.h>
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70 #include <time.h>
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71 #include <pwd.h>
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72
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73 /* Type definitions */
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74
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75 #define boolean int
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76 #define true 1
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77 #define false 0
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78
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79 /* Various lists */
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80
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81 struct line_record
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82 {
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83 char *string;
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84 struct line_record *continuation;
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85 };
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86 typedef struct line_record *line_list;
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87
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88 struct header_record
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89 {
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90 line_list text;
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91 struct header_record *next;
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92 struct header_record *previous;
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93 };
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94 typedef struct header_record *header;
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396
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95
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0
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96 struct stream_record
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97 {
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98 FILE *handle;
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396
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99 int (*action)(FILE *);
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0
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100 struct stream_record *rest_streams;
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101 };
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102 typedef struct stream_record *stream_list;
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103
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104 /* A `struct linebuffer' is a structure which holds a line of text.
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105 * `readline' reads a line from a stream into a linebuffer
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106 * and works regardless of the length of the line.
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107 */
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108
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109 struct linebuffer
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110 {
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398
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111 size_t size;
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0
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112 char *buffer;
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113 };
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114
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115 struct linebuffer lb;
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116
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117 #define new_list() \
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118 ((line_list) xmalloc (sizeof (struct line_record)))
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119 #define new_header() \
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120 ((header) xmalloc (sizeof (struct header_record)))
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121 #define new_stream() \
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122 ((stream_list) xmalloc (sizeof (struct stream_record)))
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123 #define alloc_string(nchars) \
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124 ((char *) xmalloc ((nchars) + 1))
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125
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126 /* Global declarations */
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127
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128 #define BUFLEN 1024
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129 #define KEYWORD_SIZE 256
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130 #define FROM_PREFIX "From"
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131 #define MY_NAME "fakemail"
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132 #define NIL ((line_list) NULL)
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133 #define INITIAL_LINE_SIZE 200
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134
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135 #ifndef MAIL_PROGRAM_NAME
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136 #define MAIL_PROGRAM_NAME "/bin/mail"
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137 #endif
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138
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398
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139 static const char *my_name;
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0
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140 static char *the_date;
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141 static char *the_user;
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142 static line_list file_preface;
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143 static stream_list the_streams;
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144 static boolean no_problems = true;
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145
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146 #if !__STDC__ && !defined(STDC_HEADERS)
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147 extern FILE *popen ();
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148 extern int fclose (), pclose ();
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149 extern char *malloc (), *realloc ();
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150 #endif
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151
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152 #ifdef CURRENT_USER
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153 extern struct passwd *getpwuid ();
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154 extern unsigned short geteuid ();
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155 static struct passwd *my_entry;
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156 #define cuserid(s) \
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398
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157 (my_entry = getpwuid ((int) geteuid ()), \
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0
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158 my_entry->pw_name)
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159 #endif
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160
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161 /* Utilities */
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162
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163 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
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164
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165 static void
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398
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166 error (const char *s1, const char *s2)
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0
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167 {
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168 printf ("%s: ", my_name);
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169 printf (s1, s2);
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170 printf ("\n");
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171 no_problems = false;
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172 }
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173
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174 /* Print error message and exit. */
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175
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176 static void
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398
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177 fatal (const char *s1, const char *s2)
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0
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178 {
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179 error (s1, s2);
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180 exit (1);
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181 }
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182
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183 /* Like malloc but get fatal error if memory is exhausted. */
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184
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398
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185 static void *
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396
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186 xmalloc (size_t size)
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0
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187 {
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398
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188 void *result = malloc (size);
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189 if (result == NULL)
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0
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190 fatal ("virtual memory exhausted", (char *) 0);
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191 return result;
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192 }
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193
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398
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194 static void *
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195 xrealloc (void *ptr, size_t size)
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0
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196 {
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398
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197 void *result = realloc (ptr, size);
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198 if (result == NULL)
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0
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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 /* Initialize a linebuffer for use */
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204
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205 static void
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206 init_linebuffer (struct linebuffer *linebuffer)
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207 {
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208 linebuffer->size = INITIAL_LINE_SIZE;
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398
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209 linebuffer->buffer = (char *) xmalloc (INITIAL_LINE_SIZE);
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0
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210 }
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211
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212 /* Read a line of text from `stream' into `linebuffer'.
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396
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213 * Return the length of the line.
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0
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214 */
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215
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216 static long
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217 readline (struct linebuffer *linebuffer, FILE *stream)
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218 {
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219 char *buffer = linebuffer->buffer;
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220 char *p = linebuffer->buffer;
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221 char *end = p + linebuffer->size;
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222
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223 while (true)
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224 {
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225 int c = getc (stream);
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226 if (p == end)
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227 {
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228 linebuffer->size *= 2;
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398
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229 buffer = (char *) xrealloc (buffer, linebuffer->size);
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0
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230 p = buffer + (p - linebuffer->buffer);
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231 end = buffer + linebuffer->size;
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232 linebuffer->buffer = buffer;
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233 }
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234 if (c < 0 || c == '\n')
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235 {
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236 *p = 0;
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237 break;
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238 }
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239 *p++ = c;
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240 }
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241
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242 return p - buffer;
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243 }
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244
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245 static char *
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246 get_keyword (register char *field, char **rest)
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247 {
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248 static char keyword[KEYWORD_SIZE];
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249 register char *ptr;
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250 register char c;
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251
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252 ptr = &keyword[0];
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253 c = *field++;
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396
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254 if ((isspace ((int) (unsigned char) c)) || (c == ':'))
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255 return (char *) NULL;
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256 *ptr++ = ((islower ((int) (unsigned char) c)) ?
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257 (toupper ((int) (unsigned char) c)) : c);
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258 while (((c = *field++) != ':') &&
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259 (!(isspace ((int) (unsigned char) c))))
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260 *ptr++ = ((islower ((int) (unsigned char) c)) ?
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261 (toupper ((int) (unsigned char) c)) : c);
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0
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262 *ptr++ = '\0';
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396
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263 while (isspace ((int) (unsigned char) c)) c = *field++;
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264 if (c != ':') return (char *) NULL;
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0
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265 *rest = field;
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266 return &keyword[0];
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267 }
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268
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269 static boolean
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270 has_keyword (char *field)
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271 {
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272 char *ignored;
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398
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273 return (get_keyword (field, &ignored) != (char *) NULL);
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0
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274 }
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275
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276 static char *
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277 add_field (line_list the_list, register char *field, register char *where)
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278 {
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279 register char c;
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280 while (true)
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281 {
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282 *where++ = ' ';
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283 while ((c = *field++) != '\0')
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284 {
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285 if (c == '(')
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286 {
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287 while (*field && *field != ')') ++field;
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288 if (! (*field++)) break; /* no closer */
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289 if (! (*field)) break; /* closerNULL */
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290 c = *field;
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291 }
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292 *where++ = ((c == ','||c=='>'||c=='<') ? ' ' : c);
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293 }
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294 if (the_list == NIL) break;
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295 field = the_list->string;
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296 the_list = the_list->continuation;
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297 }
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298 return where;
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299 }
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300
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301 static line_list
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302 make_file_preface (void)
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303 {
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304 char *the_string, *temp;
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305 long idiotic_interface;
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306 long prefix_length;
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307 long user_length;
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308 long date_length;
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309 line_list result;
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310
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311 prefix_length = strlen (FROM_PREFIX);
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312 time (&idiotic_interface);
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313 the_date = ctime (&idiotic_interface);
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314 /* the_date has an unwanted newline at the end */
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315 date_length = strlen (the_date) - 1;
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316 the_date[date_length] = '\0';
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410
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317 #ifdef WIN32_NATIVE
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398
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318 temp = "(null)";
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319 #else
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0
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320 temp = cuserid ((char *) NULL);
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398
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321 #endif
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0
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322 user_length = strlen (temp);
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323 the_user = alloc_string ((size_t) (user_length + 1));
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324 strcpy (the_user, temp);
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325 the_string = alloc_string ((size_t) (3 + prefix_length +
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326 user_length +
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327 date_length));
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328 temp = the_string;
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329 strcpy (temp, FROM_PREFIX);
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330 temp = &temp[prefix_length];
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331 *temp++ = ' ';
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332 strcpy (temp, the_user);
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333 temp = &temp[user_length];
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334 *temp++ = ' ';
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335 strcpy (temp, the_date);
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336 result = new_list ();
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337 result->string = the_string;
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338 result->continuation = ((line_list) NULL);
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339 return result;
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340 }
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341
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342 static void
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343 write_line_list (register line_list the_list, FILE *the_stream)
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344 {
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345 for ( ;
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346 the_list != ((line_list) NULL) ;
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347 the_list = the_list->continuation)
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348 {
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349 fputs (the_list->string, the_stream);
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350 putc ('\n', the_stream);
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351 }
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352 return;
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353 }
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354
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355 static int
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356 close_the_streams (void)
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357 {
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358 register stream_list rem;
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359 for (rem = the_streams;
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360 rem != ((stream_list) NULL);
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361 rem = rem->rest_streams)
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362 no_problems = (no_problems &&
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363 ((*rem->action) (rem->handle) == 0));
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364 the_streams = ((stream_list) NULL);
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365 return (no_problems ? 0 : 1);
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366 }
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367
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368 static void
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396
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369 add_a_stream (FILE *the_stream, int (*closing_action)(FILE *))
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0
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370 {
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371 stream_list old = the_streams;
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372 the_streams = new_stream ();
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373 the_streams->handle = the_stream;
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374 the_streams->action = closing_action;
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375 the_streams->rest_streams = old;
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376 return;
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377 }
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378
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379 static int
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380 my_fclose (FILE *the_file)
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381 {
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382 putc ('\n', the_file);
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383 fflush (the_file);
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384 return fclose (the_file);
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385 }
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386
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387 static boolean
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388 open_a_file (char *name)
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389 {
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390 FILE *the_stream = fopen (name, "a");
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391 if (the_stream != ((FILE *) NULL))
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392 {
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393 add_a_stream (the_stream, my_fclose);
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398
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394 if (the_user == (char *) NULL)
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0
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395 file_preface = make_file_preface ();
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396 write_line_list (file_preface, the_stream);
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397 return true;
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398 }
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399 return false;
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400 }
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401
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402 static void
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403 put_string (char *s)
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404 {
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405 register stream_list rem;
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406 for (rem = the_streams;
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407 rem != ((stream_list) NULL);
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408 rem = rem->rest_streams)
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409 fputs (s, rem->handle);
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410 return;
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411 }
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412
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413 static void
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398
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414 put_line (const char *string)
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|
0
|
415 {
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416 register stream_list rem;
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417 for (rem = the_streams;
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418 rem != ((stream_list) NULL);
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419 rem = rem->rest_streams)
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420 {
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|
398
|
421 const char *s = string;
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|
0
|
422 int column = 0;
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423
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|
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424 /* Divide STRING into lines. */
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|
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425 while (*s != 0)
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426 {
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|
398
|
427 const char *breakpos;
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|
0
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428
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|
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429 /* Find the last char that fits. */
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430 for (breakpos = s; *breakpos && column < 78; ++breakpos)
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431 {
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432 if (*breakpos == '\t')
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433 column += 8;
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434 else
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435 column++;
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436 }
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|
|
437 /* If we didn't reach end of line, break the line. */
|
|
|
438 if (*breakpos)
|
|
|
439 {
|
|
|
440 /* Back up to just after the last comma that fits. */
|
|
|
441 while (breakpos != s && breakpos[-1] != ',') --breakpos;
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|
|
442
|
|
|
443 if (breakpos == s)
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|
|
444 {
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|
|
445 /* If no comma fits, move past the first address anyway. */
|
|
|
446 while (*breakpos != 0 && *breakpos != ',') ++breakpos;
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|
|
447 if (*breakpos != 0)
|
|
|
448 /* Include the comma after it. */
|
|
|
449 ++breakpos;
|
|
|
450 }
|
|
|
451 }
|
|
|
452 /* Output that much, then break the line. */
|
|
|
453 fwrite (s, 1, breakpos - s, rem->handle);
|
|
|
454 column = 8;
|
|
|
455
|
|
|
456 /* Skip whitespace and prepare to print more addresses. */
|
|
|
457 s = breakpos;
|
|
|
458 while (*s == ' ' || *s == '\t') ++s;
|
|
|
459 if (*s != 0)
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|
|
460 fputs ("\n\t", rem->handle);
|
|
|
461 }
|
|
|
462 putc ('\n', rem->handle);
|
|
|
463 }
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|
|
464 return;
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|
|
465 }
|
|
|
466
|
|
|
467 #define mail_error error
|
|
|
468
|
|
|
469 static void
|
|
|
470 setup_files (register line_list the_list, register char *field)
|
|
|
471 {
|
|
|
472 register char *start;
|
|
|
473 register char c;
|
|
|
474 while (true)
|
|
|
475 {
|
|
|
476 while (((c = *field) != '\0') &&
|
|
|
477 ((c == ' ') ||
|
|
|
478 (c == '\t') ||
|
|
|
479 (c == ',')))
|
|
|
480 field += 1;
|
|
|
481 if (c != '\0')
|
|
|
482 {
|
|
|
483 start = field;
|
|
|
484 while (((c = *field) != '\0') &&
|
|
|
485 (c != ' ') &&
|
|
|
486 (c != '\t') &&
|
|
|
487 (c != ','))
|
|
|
488 field += 1;
|
|
|
489 *field = '\0';
|
|
|
490 if (!open_a_file (start))
|
|
|
491 mail_error ("Could not open file %s", start);
|
|
|
492 *field = c;
|
|
|
493 if (c != '\0') continue;
|
|
|
494 }
|
|
|
495 if (the_list == ((line_list) NULL)) return;
|
|
|
496 field = the_list->string;
|
|
|
497 the_list = the_list->continuation;
|
|
|
498 }
|
|
|
499 }
|
|
|
500
|
|
|
501 static int
|
|
|
502 args_size (header the_header)
|
|
|
503 {
|
|
|
504 register header old = the_header;
|
|
|
505 register line_list rem;
|
|
|
506 register int size = 0;
|
|
|
507 do
|
|
|
508 {
|
|
|
509 char *field;
|
|
|
510 register char *keyword = get_keyword (the_header->text->string, &field);
|
|
|
511 if ((strcmp (keyword, "TO") == 0) ||
|
|
|
512 (strcmp (keyword, "CC") == 0) ||
|
|
|
513 (strcmp (keyword, "BCC") == 0))
|
|
|
514 {
|
|
|
515 size += 1 + strlen (field);
|
|
|
516 for (rem = the_header->text->continuation;
|
|
|
517 rem != NIL;
|
|
|
518 rem = rem->continuation)
|
|
|
519 size += 1 + strlen (rem->string);
|
|
|
520 }
|
|
|
521 the_header = the_header->next;
|
|
|
522 } while (the_header != old);
|
|
|
523 return size;
|
|
|
524 }
|
|
|
525
|
|
|
526 static void
|
|
|
527 parse_header (header the_header, register char *where)
|
|
|
528 {
|
|
|
529 register header old = the_header;
|
|
|
530 do
|
|
|
531 {
|
|
|
532 char *field;
|
|
|
533 register char *keyword = get_keyword (the_header->text->string, &field);
|
|
|
534 if (strcmp (keyword, "TO") == 0)
|
|
|
535 where = add_field (the_header->text->continuation, field, where);
|
|
|
536 else if (strcmp (keyword, "CC") == 0)
|
|
|
537 where = add_field (the_header->text->continuation, field, where);
|
|
|
538 else if (strcmp (keyword, "BCC") == 0)
|
|
|
539 {
|
|
|
540 where = add_field (the_header->text->continuation, field, where);
|
|
|
541 the_header->previous->next = the_header->next;
|
|
|
542 the_header->next->previous = the_header->previous;
|
|
|
543 }
|
|
|
544 else if (strcmp (keyword, "FCC") == 0)
|
|
|
545 setup_files (the_header->text->continuation, field);
|
|
|
546 the_header = the_header->next;
|
|
|
547 } while (the_header != old);
|
|
|
548 *where = '\0';
|
|
|
549 return;
|
|
|
550 }
|
|
396
|
551
|
|
0
|
552 static header
|
|
|
553 read_header (void)
|
|
|
554 {
|
|
|
555 register header the_header = ((header) NULL);
|
|
|
556 register line_list *next_line = ((line_list *) NULL);
|
|
|
557
|
|
|
558 init_linebuffer (&lb);
|
|
|
559
|
|
|
560 do
|
|
|
561 {
|
|
|
562 long length;
|
|
|
563 register char *line;
|
|
|
564
|
|
|
565 readline (&lb, stdin);
|
|
|
566 line = lb.buffer;
|
|
|
567 length = strlen (line);
|
|
|
568 if (length == 0) break;
|
|
|
569
|
|
|
570 if (has_keyword (line))
|
|
|
571 {
|
|
|
572 register header old = the_header;
|
|
|
573 the_header = new_header ();
|
|
|
574 if (old == ((header) NULL))
|
|
|
575 {
|
|
|
576 the_header->next = the_header;
|
|
|
577 the_header->previous = the_header;
|
|
|
578 }
|
|
|
579 else
|
|
|
580 {
|
|
|
581 the_header->previous = old;
|
|
|
582 the_header->next = old->next;
|
|
|
583 old->next = the_header;
|
|
|
584 }
|
|
|
585 next_line = &(the_header->text);
|
|
|
586 }
|
|
|
587
|
|
|
588 if (next_line == ((line_list *) NULL))
|
|
|
589 {
|
|
|
590 /* Not a valid header */
|
|
|
591 exit (1);
|
|
|
592 }
|
|
|
593 *next_line = new_list ();
|
|
|
594 (*next_line)->string = alloc_string ((size_t) length);
|
|
|
595 strcpy (((*next_line)->string), line);
|
|
|
596 next_line = &((*next_line)->continuation);
|
|
|
597 *next_line = NIL;
|
|
|
598
|
|
|
599 } while (true);
|
|
|
600
|
|
|
601 return the_header->next;
|
|
|
602 }
|
|
|
603
|
|
|
604 static void
|
|
|
605 write_header (header the_header)
|
|
|
606 {
|
|
|
607 register header old = the_header;
|
|
|
608 do
|
|
|
609 {
|
|
|
610 register line_list the_list;
|
|
|
611 for (the_list = the_header->text;
|
|
|
612 the_list != NIL;
|
|
|
613 the_list = the_list->continuation)
|
|
|
614 put_line (the_list->string);
|
|
|
615 the_header = the_header->next;
|
|
|
616 } while (the_header != old);
|
|
|
617 put_line ("");
|
|
|
618 return;
|
|
|
619 }
|
|
|
620
|
|
215
|
621 int
|
|
396
|
622 main (int argc, char *argv[])
|
|
0
|
623 {
|
|
|
624 char *command_line;
|
|
|
625 header the_header;
|
|
|
626 long name_length;
|
|
|
627 char *mail_program_name;
|
|
|
628 char buf[BUFLEN + 1];
|
|
|
629 register int size;
|
|
|
630 FILE *the_pipe;
|
|
|
631
|
|
|
632 mail_program_name = getenv ("FAKEMAILER");
|
|
|
633 if (!(mail_program_name && *mail_program_name))
|
|
|
634 mail_program_name = (char *) MAIL_PROGRAM_NAME;
|
|
|
635 name_length = strlen (mail_program_name);
|
|
|
636
|
|
|
637 my_name = MY_NAME;
|
|
|
638 the_streams = ((stream_list) NULL);
|
|
398
|
639 the_date = (char *) NULL;
|
|
|
640 the_user = (char *) NULL;
|
|
0
|
641
|
|
|
642 the_header = read_header ();
|
|
|
643 command_line = alloc_string ((size_t) (name_length +
|
|
|
644 args_size (the_header)));
|
|
|
645 strcpy (command_line, mail_program_name);
|
|
|
646 parse_header (the_header, &command_line[name_length]);
|
|
396
|
647
|
|
0
|
648 the_pipe = popen (command_line, "w");
|
|
|
649 if (the_pipe == ((FILE *) NULL))
|
|
398
|
650 fatal ("cannot open pipe to real mailer", (char *) NULL);
|
|
0
|
651
|
|
|
652 add_a_stream (the_pipe, pclose);
|
|
|
653
|
|
|
654 write_header (the_header);
|
|
|
655
|
|
|
656 /* Dump the message itself */
|
|
|
657
|
|
|
658 while (!feof (stdin))
|
|
|
659 {
|
|
|
660 size = fread (buf, 1, BUFLEN, stdin);
|
|
|
661 buf[size] = '\0';
|
|
|
662 put_string (buf);
|
|
|
663 }
|
|
|
664
|
|
215
|
665 return close_the_streams ();
|
|
0
|
666 }
|
|
|
667
|
|
|
668 #endif /* not BSD 4.2 (or newer) */
|
