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0
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1 /* movemail foo bar -- move file foo to file bar,
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2 locking file foo the way /bin/mail respects.
|
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70
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3 Copyright (C) 1986, 1992, 1993, 1994 Free Software Foundation, Inc.
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0
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4
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5 This file is part of GNU Emacs.
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6
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7 GNU Emacs is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 GNU Emacs is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GNU Emacs; see the file COPYING. If not, write to
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70
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19 the Free the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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|
0
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20 Boston, MA 02111-1307, USA. */
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21
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70
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22 /* Synched up with: FSF 19.28. */
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23
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0
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24 /* Important notice: defining MAIL_USE_FLOCK or MAIL_USE_LOCKF *will
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25 cause loss of mail* if you do it on a system that does not normally
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26 use flock as its way of interlocking access to inbox files. The
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27 setting of MAIL_USE_FLOCK and MAIL_USE_LOCKF *must agree* with the
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28 system's own conventions. It is not a choice that is up to you.
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29
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30 So, if your system uses lock files rather than flock, then the only way
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31 you can get proper operation is to enable movemail to write lockfiles there.
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32 This means you must either give that directory access modes
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33 that permit everyone to write lockfiles in it, or you must make movemail
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34 a setuid or setgid program. */
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35
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36 /*
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37 * Modified January, 1986 by Michael R. Gretzinger (Project Athena)
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38 *
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70
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39 * Added POP (Post Office Protocol) service. When compiled -DPOP
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0
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40 * movemail will accept input filename arguments of the form
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41 * "po:username". This will cause movemail to open a connection to
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42 * a pop server running on $MAILHOST (environment variable). Movemail
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43 * must be setuid to root in order to work with POP.
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44 *
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45 * New module: popmail.c
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46 * Modified routines:
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47 * main - added code within #ifdef MAIL_USE_POP; added setuid (getuid ())
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48 * after POP code.
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49 * New routines in movemail.c:
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50 * get_errmsg - return pointer to system error message
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51 *
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52 */
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53
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54 #define NO_SHORTNAMES /* Tell config not to load remap.h */
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55 #include <../src/config.h>
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70
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56 #include <stdlib.h>
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57 #include <unistd.h>
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58 #include <time.h> /* for time() */
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59 #include <stdio.h> /* for printf() */
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60 #include <string.h> /* strcpy() */
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61
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0
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62 #include <sys/types.h>
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63 #include <sys/stat.h>
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64 #include <sys/file.h>
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65 #include <errno.h>
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70
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66 #include <../src/syswait.h>
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54
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67
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0
|
68 #ifdef MSDOS
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69 #undef access
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70 #endif /* MSDOS */
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71
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70
|
72 #ifdef USG
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73 #include <fcntl.h>
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0
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74 #include <unistd.h>
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70
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75 #if defined (sun)
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76 #include <stdlib.h>
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77 #endif /* sun */
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0
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78 #ifndef F_OK
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79 #define F_OK 0
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80 #define X_OK 1
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81 #define W_OK 2
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82 #define R_OK 4
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70
|
83 #endif
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84 #endif /* USG */
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0
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85
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70
|
86 #ifdef HAVE_UNISTD_H
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87 #include <unistd.h>
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88 #endif
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0
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89
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70
|
90 #ifdef XENIX
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0
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91 #include <sys/locking.h>
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92 #endif
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93
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94 #ifdef MAIL_USE_LOCKF
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95 #define MAIL_USE_SYSTEM_LOCK
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96 #endif
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97
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98 #ifdef MAIL_USE_FLOCK
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99 #define MAIL_USE_SYSTEM_LOCK
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100 #endif
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101
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102 #ifdef MAIL_USE_MMDF
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103 extern int lk_open (), lk_close ();
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104 #endif
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105
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106 /* Cancel substitutions made by config.h for Emacs. */
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107 #undef open
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108 #undef read
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109 #undef write
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110 #undef close
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111
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70
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112 static char *concat (CONST char *s1, CONST char *s2, CONST char *s3);
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113 static void *xmalloc (unsigned int size);
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114 #ifndef errno
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115 extern int errno;
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0
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116 #endif
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70
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117
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118 static void error (CONST char *s1, CONST char *s2, CONST char *s3);
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119 static void fatal (CONST char *s1, CONST char *s2);
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120 static void pfatal_with_name (CONST char *name);
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121 static void pfatal_and_delete (CONST char *name);
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122
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123 #ifndef HAVE_STRERROR
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124 char *strerror (int);
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125 #endif
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0
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126
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127 /* Nonzero means this is name of a lock file to delete on fatal error. */
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128 char *delete_lockname;
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129
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70
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130 void
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131 main (argc, argv)
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132 int argc;
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133 char **argv;
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|
0
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134 {
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135 char *inname, *outname;
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136 int indesc, outdesc;
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137 int nread;
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70
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138 WAITTYPE status;
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0
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139
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140 #ifndef MAIL_USE_SYSTEM_LOCK
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141 struct stat st;
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142 long now;
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143 int tem;
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144 char *lockname, *p;
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145 char *tempname;
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146 int desc;
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147 #endif /* not MAIL_USE_SYSTEM_LOCK */
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148
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149 delete_lockname = 0;
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150
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151 if (argc < 3)
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70
|
152 fatal ("two arguments required", "");
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|
0
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153
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154 inname = argv[1];
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155 outname = argv[2];
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156
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157 #ifdef MAIL_USE_MMDF
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158 mmdf_init (argv[0]);
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159 #endif
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160
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161 /* Check access to output file. */
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162 if (access (outname, F_OK) == 0 && access (outname, W_OK) != 0)
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163 pfatal_with_name (outname);
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164
|
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70
|
165 /* Also check that outname's directory is writeable to the real uid. */
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|
0
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166 {
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167 char *buf = (char *) xmalloc (strlen (outname) + 1);
|
|
70
|
168 char *p;
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|
0
|
169 strcpy (buf, outname);
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|
70
|
170 p = buf + strlen (buf);
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171 while (p > buf && p[-1] != '/')
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172 *--p = 0;
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173 if (p == buf)
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174 *p++ = '.';
|
|
0
|
175 if (access (buf, W_OK) != 0)
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176 pfatal_with_name (buf);
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177 free (buf);
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178 }
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179
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180 #ifdef MAIL_USE_POP
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|
70
|
181 if (!memcmp (inname, "po:", 3))
|
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0
|
182 {
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|
70
|
183 int status; char *user;
|
|
0
|
184
|
|
70
|
185 for (user = &inname[strlen (inname) - 1]; user >= inname; user--)
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|
186 if (*user == ':')
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187 break;
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188
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189 status = popmail (user, outname);
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|
0
|
190 exit (status);
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|
191 }
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192
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193 setuid (getuid ());
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|
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194 #endif /* MAIL_USE_POP */
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195
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|
|
196 /* Check access to input file. */
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197 if (access (inname, R_OK | W_OK) != 0)
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198 pfatal_with_name (inname);
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199
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200 #ifndef MAIL_USE_MMDF
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201 #ifndef MAIL_USE_SYSTEM_LOCK
|
|
70
|
202 /* Use a lock file named /usr/spool/mail/$USER.lock:
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0
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203 If it exists, the mail file is locked. */
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204 /* Note: this locking mechanism is *required* by the mailer
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205 (on systems which use it) to prevent loss of mail.
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206
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207 On systems that use a lock file, extracting the mail without locking
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208 WILL occasionally cause loss of mail due to timing errors!
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209
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210 So, if creation of the lock file fails
|
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70
|
211 due to access permission on /usr/spool/mail,
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0
|
212 you simply MUST change the permission
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213 and/or make movemail a setgid program
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214 so it can create lock files properly.
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215
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216 You might also wish to verify that your system is one
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217 which uses lock files for this purpose. Some systems use other methods.
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218
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219 If your system uses the `flock' system call for mail locking,
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220 define MAIL_USE_SYSTEM_LOCK in config.h or the s-*.h file
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221 and recompile movemail. If the s- file for your system
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222 should define MAIL_USE_SYSTEM_LOCK but does not, send a bug report
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223 to bug-gnu-emacs@prep.ai.mit.edu so we can fix it. */
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224
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225 lockname = concat (inname, ".lock", "");
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226 tempname = (char *) xmalloc (strlen (inname) + strlen ("EXXXXXX") + 1);
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227 strcpy (tempname, inname);
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228 p = tempname + strlen (tempname);
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70
|
229 while (p != tempname && p[-1] != '/')
|
|
0
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230 p--;
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231 *p = 0;
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232 strcpy (p, "EXXXXXX");
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233 mktemp (tempname);
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234 unlink (tempname);
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235
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|
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236 while (1)
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237 {
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238 /* Create the lock file, but not under the lock file name. */
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239 /* Give up if cannot do that. */
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240 desc = open (tempname, O_WRONLY | O_CREAT | O_EXCL, 0666);
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241 if (desc < 0)
|
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70
|
242 pfatal_with_name ("lock file--see source file lib-src/movemail.c");
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|
0
|
243 close (desc);
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244
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|
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245 tem = link (tempname, lockname);
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|
246 unlink (tempname);
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|
|
247 if (tem >= 0)
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248 break;
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249 sleep (1);
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250
|
|
70
|
251 /* If lock file is a minute old, unlock it. */
|
|
0
|
252 if (stat (lockname, &st) >= 0)
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|
|
253 {
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|
|
254 now = time (0);
|
|
70
|
255 if (st.st_ctime < now - 60)
|
|
|
256 unlink (lockname);
|
|
0
|
257 }
|
|
|
258 }
|
|
|
259
|
|
|
260 delete_lockname = lockname;
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|
|
261 #endif /* not MAIL_USE_SYSTEM_LOCK */
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|
|
262 #endif /* not MAIL_USE_MMDF */
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|
|
263
|
|
|
264 if (fork () == 0)
|
|
|
265 {
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|
|
266 setuid (getuid ());
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|
|
267
|
|
|
268 #ifndef MAIL_USE_MMDF
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|
|
269 #ifdef MAIL_USE_SYSTEM_LOCK
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|
|
270 indesc = open (inname, O_RDWR);
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|
|
271 #else /* if not MAIL_USE_SYSTEM_LOCK */
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|
|
272 indesc = open (inname, O_RDONLY);
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|
|
273 #endif /* not MAIL_USE_SYSTEM_LOCK */
|
|
|
274 #else /* MAIL_USE_MMDF */
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|
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275 indesc = lk_open (inname, O_RDONLY, 0, 0, 10);
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|
|
276 #endif /* MAIL_USE_MMDF */
|
|
|
277
|
|
|
278 if (indesc < 0)
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|
|
279 pfatal_with_name (inname);
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|
|
280
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|
|
281 #if defined (BSD) || defined (XENIX)
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|
|
282 /* In case movemail is setuid to root, make sure the user can
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|
283 read the output file. */
|
|
|
284 /* This is desirable for all systems
|
|
|
285 but I don't want to assume all have the umask system call */
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|
|
286 umask (umask (0) & 0333);
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|
|
287 #endif /* BSD or Xenix */
|
|
|
288 outdesc = open (outname, O_WRONLY | O_CREAT | O_EXCL, 0666);
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|
|
289 if (outdesc < 0)
|
|
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290 pfatal_with_name (outname);
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|
|
291 #ifdef MAIL_USE_SYSTEM_LOCK
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|
|
292 #ifdef MAIL_USE_LOCKF
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|
|
293 if (lockf (indesc, F_LOCK, 0) < 0) pfatal_with_name (inname);
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|
|
294 #else /* not MAIL_USE_LOCKF */
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|
|
295 #ifdef XENIX
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|
|
296 if (locking (indesc, LK_RLCK, 0L) < 0) pfatal_with_name (inname);
|
|
|
297 #else
|
|
|
298 if (flock (indesc, LOCK_EX) < 0) pfatal_with_name (inname);
|
|
|
299 #endif
|
|
|
300 #endif /* not MAIL_USE_LOCKF */
|
|
|
301 #endif /* MAIL_USE_SYSTEM_LOCK */
|
|
|
302
|
|
|
303 {
|
|
|
304 char buf[1024];
|
|
|
305
|
|
|
306 while (1)
|
|
|
307 {
|
|
|
308 nread = read (indesc, buf, sizeof buf);
|
|
|
309 if (nread != write (outdesc, buf, nread))
|
|
|
310 {
|
|
|
311 int saved_errno = errno;
|
|
|
312 unlink (outname);
|
|
|
313 errno = saved_errno;
|
|
|
314 pfatal_with_name (outname);
|
|
|
315 }
|
|
|
316 if (nread < sizeof buf)
|
|
|
317 break;
|
|
|
318 }
|
|
|
319 }
|
|
|
320
|
|
|
321 #ifdef BSD
|
|
|
322 if (fsync (outdesc) < 0)
|
|
|
323 pfatal_and_delete (outname);
|
|
|
324 #endif
|
|
|
325
|
|
|
326 /* Check to make sure no errors before we zap the inbox. */
|
|
|
327 if (close (outdesc) != 0)
|
|
|
328 pfatal_and_delete (outname);
|
|
|
329
|
|
|
330 #ifdef MAIL_USE_SYSTEM_LOCK
|
|
70
|
331 #if defined (STRIDE) || defined (XENIX)
|
|
0
|
332 /* Stride, xenix have file locking, but no ftruncate. This mess will do. */
|
|
|
333 close (open (inname, O_CREAT | O_TRUNC | O_RDWR, 0666));
|
|
|
334 #else
|
|
|
335 ftruncate (indesc, 0L);
|
|
|
336 #endif /* STRIDE or XENIX */
|
|
|
337 #endif /* MAIL_USE_SYSTEM_LOCK */
|
|
|
338
|
|
|
339 #ifdef MAIL_USE_MMDF
|
|
|
340 lk_close (indesc, 0, 0, 0);
|
|
|
341 #else
|
|
|
342 close (indesc);
|
|
|
343 #endif
|
|
|
344
|
|
|
345 #ifndef MAIL_USE_SYSTEM_LOCK
|
|
|
346 /* Delete the input file; if we can't, at least get rid of its
|
|
|
347 contents. */
|
|
|
348 #ifdef MAIL_UNLINK_SPOOL
|
|
|
349 /* This is generally bad to do, because it destroys the permissions
|
|
|
350 that were set on the file. Better to just empty the file. */
|
|
|
351 if (unlink (inname) < 0 && errno != ENOENT)
|
|
|
352 #endif /* MAIL_UNLINK_SPOOL */
|
|
|
353 creat (inname, 0600);
|
|
|
354 #endif /* not MAIL_USE_SYSTEM_LOCK */
|
|
|
355
|
|
|
356 exit (0);
|
|
|
357 }
|
|
|
358
|
|
|
359 wait (&status);
|
|
|
360 if (!WIFEXITED (status))
|
|
|
361 exit (1);
|
|
70
|
362 else if (WRETCODE (status) != 0)
|
|
|
363 exit (WRETCODE (status));
|
|
0
|
364
|
|
|
365 #if !defined (MAIL_USE_MMDF) && !defined (MAIL_USE_SYSTEM_LOCK)
|
|
|
366 unlink (lockname);
|
|
|
367 #endif /* not MAIL_USE_MMDF and not MAIL_USE_SYSTEM_LOCK */
|
|
70
|
368 exit (0);
|
|
0
|
369 }
|
|
|
370
|
|
|
371 /* Print error message and exit. */
|
|
|
372
|
|
54
|
373 static void
|
|
70
|
374 fatal (s1, s2)
|
|
|
375 CONST char *s1, *s2;
|
|
0
|
376 {
|
|
|
377 if (delete_lockname)
|
|
70
|
378 error (s1, s2, "");
|
|
0
|
379 unlink (delete_lockname);
|
|
|
380 exit (1);
|
|
|
381 }
|
|
|
382
|
|
|
383 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
|
|
|
384
|
|
54
|
385 static void
|
|
70
|
386 error (s1, s2, s3)
|
|
|
387 CONST char *s1, *s2, *s3;
|
|
0
|
388 {
|
|
70
|
389 printf ("movemail: ");
|
|
|
390 printf (s1, s2, s3);
|
|
|
391 printf ("\n");
|
|
0
|
392 }
|
|
|
393
|
|
54
|
394 static void
|
|
70
|
395 pfatal_with_name (name)
|
|
|
396 CONST char *name;
|
|
0
|
397 {
|
|
70
|
398 char *s;
|
|
|
399
|
|
|
400 s = concat ("", strerror (errno), " for %s");
|
|
0
|
401 fatal (s, name);
|
|
|
402 }
|
|
|
403
|
|
54
|
404 static void
|
|
70
|
405 pfatal_and_delete (name)
|
|
|
406 CONST char *name;
|
|
0
|
407 {
|
|
70
|
408 char *s;
|
|
|
409
|
|
|
410 s = concat ("", strerror (errno), " for %s");
|
|
0
|
411 unlink (name);
|
|
|
412 fatal (s, name);
|
|
|
413 }
|
|
|
414
|
|
|
415 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
|
|
|
416
|
|
54
|
417 static char *
|
|
70
|
418 concat (s1, s2, s3)
|
|
|
419 CONST char *s1, *s2, *s3;
|
|
0
|
420 {
|
|
|
421 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
|
|
|
422 char *result = (char *) xmalloc (len1 + len2 + len3 + 1);
|
|
|
423
|
|
|
424 strcpy (result, s1);
|
|
|
425 strcpy (result + len1, s2);
|
|
|
426 strcpy (result + len1 + len2, s3);
|
|
|
427 *(result + len1 + len2 + len3) = 0;
|
|
|
428
|
|
|
429 return result;
|
|
|
430 }
|
|
|
431
|
|
|
432 /* Like malloc but get fatal error if memory is exhausted. */
|
|
|
433
|
|
70
|
434 static void *
|
|
|
435 xmalloc (size)
|
|
|
436 unsigned int size;
|
|
0
|
437 {
|
|
70
|
438 void *result = (void *) malloc (size);
|
|
0
|
439 if (!result)
|
|
70
|
440 fatal ("virtual memory exhausted", (char *) 0);
|
|
0
|
441 return result;
|
|
|
442 }
|
|
|
443
|
|
|
444 /* This is the guts of the interface to the Post Office Protocol. */
|
|
|
445
|
|
|
446 #ifdef MAIL_USE_POP
|
|
|
447
|
|
|
448 #include <sys/socket.h>
|
|
|
449 #include <netinet/in.h>
|
|
|
450 #include <netdb.h>
|
|
|
451 #include <stdio.h>
|
|
|
452 #include <pwd.h>
|
|
|
453
|
|
70
|
454 #ifdef USG
|
|
|
455 #include <fcntl.h>
|
|
|
456 /* Cancel substitutions made by config.h for Emacs. */
|
|
|
457 #undef open
|
|
|
458 #undef read
|
|
|
459 #undef write
|
|
|
460 #undef close
|
|
|
461 #endif /* USG */
|
|
|
462
|
|
0
|
463 #define NOTOK (-1)
|
|
|
464 #define OK 0
|
|
|
465 #define DONE 1
|
|
|
466
|
|
|
467 char *progname;
|
|
|
468 FILE *sfi;
|
|
|
469 FILE *sfo;
|
|
|
470 char Errmsg[80];
|
|
|
471
|
|
70
|
472 static int debug = 0;
|
|
|
473
|
|
|
474 char *get_errmsg ();
|
|
|
475 char *getenv ();
|
|
|
476 int mbx_write ();
|
|
|
477
|
|
|
478 int
|
|
|
479 popmail (user, outfile)
|
|
|
480 char *user;
|
|
|
481 char *outfile;
|
|
0
|
482 {
|
|
70
|
483 char *host;
|
|
0
|
484 int nmsgs, nbytes;
|
|
70
|
485 char response[128];
|
|
0
|
486 register int i;
|
|
|
487 int mbfi;
|
|
|
488 FILE *mbf;
|
|
70
|
489 struct passwd *pw = (struct passwd *) getpwuid (getuid ());
|
|
|
490 if (pw == NULL)
|
|
|
491 fatal ("cannot determine user name");
|
|
0
|
492
|
|
70
|
493 host = getenv ("MAILHOST");
|
|
|
494 if (host == NULL)
|
|
0
|
495 {
|
|
70
|
496 fatal ("no MAILHOST defined");
|
|
|
497 }
|
|
|
498
|
|
|
499 if (pop_init (host) == NOTOK)
|
|
|
500 {
|
|
|
501 fatal (Errmsg);
|
|
0
|
502 }
|
|
|
503
|
|
70
|
504 if (getline (response, sizeof response, sfi) != OK)
|
|
|
505 {
|
|
|
506 fatal (response);
|
|
|
507 }
|
|
|
508
|
|
|
509 if (pop_command ("USER %s", user) == NOTOK
|
|
|
510 || pop_command ("RPOP %s", pw->pw_name) == NOTOK)
|
|
0
|
511 {
|
|
70
|
512 pop_command ("QUIT");
|
|
|
513 fatal (Errmsg);
|
|
|
514 }
|
|
|
515
|
|
|
516 if (pop_stat (&nmsgs, &nbytes) == NOTOK)
|
|
|
517 {
|
|
|
518 pop_command ("QUIT");
|
|
|
519 fatal (Errmsg);
|
|
0
|
520 }
|
|
|
521
|
|
|
522 if (!nmsgs)
|
|
70
|
523 {
|
|
|
524 pop_command ("QUIT");
|
|
|
525 return 0;
|
|
|
526 }
|
|
0
|
527
|
|
|
528 mbfi = open (outfile, O_WRONLY | O_CREAT | O_EXCL, 0666);
|
|
|
529 if (mbfi < 0)
|
|
70
|
530 {
|
|
|
531 pop_command ("QUIT");
|
|
|
532 pfatal_and_delete (outfile);
|
|
|
533 }
|
|
0
|
534 fchown (mbfi, getuid (), -1);
|
|
|
535
|
|
70
|
536 if ((mbf = fdopen (mbfi, "w")) == NULL)
|
|
0
|
537 {
|
|
70
|
538 pop_command ("QUIT");
|
|
|
539 pfatal_and_delete (outfile);
|
|
0
|
540 }
|
|
|
541
|
|
70
|
542 for (i = 1; i <= nmsgs; i++)
|
|
0
|
543 {
|
|
|
544 mbx_delimit_begin (mbf);
|
|
70
|
545 if (pop_retr (i, mbx_write, mbf) != OK)
|
|
|
546 {
|
|
|
547 pop_command ("QUIT");
|
|
|
548 close (mbfi);
|
|
|
549 unlink (outfile);
|
|
|
550 fatal (Errmsg);
|
|
|
551 }
|
|
0
|
552 mbx_delimit_end (mbf);
|
|
|
553 fflush (mbf);
|
|
|
554 }
|
|
|
555
|
|
|
556 if (fsync (mbfi) < 0)
|
|
|
557 {
|
|
70
|
558 pop_command ("QUIT");
|
|
|
559 pfatal_and_delete (outfile);
|
|
0
|
560 }
|
|
|
561
|
|
|
562 if (close (mbfi) == -1)
|
|
|
563 {
|
|
70
|
564 pop_command ("QUIT");
|
|
|
565 pfatal_and_delete (outfile);
|
|
0
|
566 }
|
|
|
567
|
|
70
|
568 for (i = 1; i <= nmsgs; i++)
|
|
0
|
569 {
|
|
70
|
570 if (pop_command ("DELE %d", i) == NOTOK)
|
|
|
571 {
|
|
|
572 /* Better to ignore this failure. */
|
|
|
573 }
|
|
0
|
574 }
|
|
|
575
|
|
70
|
576 pop_command ("QUIT");
|
|
0
|
577 return (0);
|
|
|
578 }
|
|
|
579
|
|
70
|
580 int
|
|
|
581 pop_init (host)
|
|
|
582 char *host;
|
|
0
|
583 {
|
|
70
|
584 register struct hostent *hp;
|
|
|
585 register struct servent *sp;
|
|
|
586 int lport = IPPORT_RESERVED - 1;
|
|
|
587 struct sockaddr_in sin;
|
|
|
588 register int s;
|
|
|
589
|
|
|
590 hp = gethostbyname (host);
|
|
|
591 if (hp == NULL)
|
|
|
592 {
|
|
|
593 sprintf (Errmsg, "MAILHOST unknown: %s", host);
|
|
|
594 return NOTOK;
|
|
|
595 }
|
|
|
596
|
|
|
597 sp = getservbyname ("pop", "tcp");
|
|
|
598 if (sp == 0)
|
|
|
599 {
|
|
|
600 strcpy (Errmsg, "tcp/pop: unknown service");
|
|
|
601 return NOTOK;
|
|
|
602 }
|
|
0
|
603
|
|
70
|
604 sin.sin_family = hp->h_addrtype;
|
|
|
605 memcpy ((char *)&sin.sin_addr, hp->h_addr, hp->h_length);
|
|
|
606 sin.sin_port = sp->s_port;
|
|
|
607 s = rresvport (&lport);
|
|
|
608 if (s < 0)
|
|
|
609 {
|
|
|
610 sprintf (Errmsg, "error creating socket: %s", get_errmsg ());
|
|
|
611 return NOTOK;
|
|
|
612 }
|
|
|
613
|
|
|
614 if (connect (s, (char *)&sin, sizeof sin) < 0)
|
|
0
|
615 {
|
|
70
|
616 sprintf (Errmsg, "error during connect: %s", get_errmsg ());
|
|
|
617 close (s);
|
|
|
618 return NOTOK;
|
|
|
619 }
|
|
|
620
|
|
|
621 sfi = fdopen (s, "r");
|
|
|
622 sfo = fdopen (s, "w");
|
|
|
623 if (sfi == NULL || sfo == NULL)
|
|
|
624 {
|
|
|
625 sprintf (Errmsg, "error in fdopen: %s", get_errmsg ());
|
|
|
626 close (s);
|
|
|
627 return NOTOK;
|
|
0
|
628 }
|
|
|
629
|
|
70
|
630 return OK;
|
|
|
631 }
|
|
|
632
|
|
|
633 int
|
|
|
634 pop_command (fmt, a, b, c, d)
|
|
|
635 char *fmt;
|
|
|
636 {
|
|
|
637 char buf[128];
|
|
|
638 char errmsg[64];
|
|
0
|
639
|
|
70
|
640 sprintf (buf, fmt, a, b, c, d);
|
|
|
641
|
|
|
642 if (debug) fprintf (stderr, "---> %s\n", buf);
|
|
|
643 if (putline (buf, Errmsg, sfo) == NOTOK) return NOTOK;
|
|
|
644
|
|
|
645 if (getline (buf, sizeof buf, sfi) != OK)
|
|
|
646 {
|
|
|
647 strcpy (Errmsg, buf);
|
|
|
648 return NOTOK;
|
|
0
|
649 }
|
|
|
650
|
|
70
|
651 if (debug) fprintf (stderr, "<--- %s\n", buf);
|
|
|
652 if (*buf != '+')
|
|
|
653 {
|
|
|
654 strcpy (Errmsg, buf);
|
|
|
655 return NOTOK;
|
|
|
656 }
|
|
|
657 else
|
|
0
|
658 {
|
|
70
|
659 return OK;
|
|
|
660 }
|
|
|
661 }
|
|
|
662
|
|
|
663
|
|
|
664 pop_stat (nmsgs, nbytes)
|
|
|
665 int *nmsgs, *nbytes;
|
|
|
666 {
|
|
|
667 char buf[128];
|
|
|
668
|
|
|
669 if (debug) fprintf (stderr, "---> STAT\n");
|
|
|
670 if (putline ("STAT", Errmsg, sfo) == NOTOK)
|
|
|
671 return NOTOK;
|
|
|
672
|
|
|
673 if (getline (buf, sizeof buf, sfi) != OK)
|
|
|
674 {
|
|
|
675 strcpy (Errmsg, buf);
|
|
|
676 return NOTOK;
|
|
0
|
677 }
|
|
48
|
678
|
|
70
|
679 if (debug) fprintf (stderr, "<--- %s\n", buf);
|
|
|
680 if (*buf != '+')
|
|
|
681 {
|
|
|
682 strcpy (Errmsg, buf);
|
|
|
683 return NOTOK;
|
|
|
684 }
|
|
|
685 else
|
|
|
686 {
|
|
|
687 sscanf (buf, "+OK %d %d", nmsgs, nbytes);
|
|
|
688 return OK;
|
|
|
689 }
|
|
0
|
690 }
|
|
|
691
|
|
70
|
692 pop_retr (msgno, action, arg)
|
|
|
693 int (*action)();
|
|
0
|
694 {
|
|
70
|
695 char buf[128];
|
|
|
696
|
|
|
697 sprintf (buf, "RETR %d", msgno);
|
|
|
698 if (debug) fprintf (stderr, "%s\n", buf);
|
|
|
699 if (putline (buf, Errmsg, sfo) == NOTOK) return NOTOK;
|
|
|
700
|
|
|
701 if (getline (buf, sizeof buf, sfi) != OK)
|
|
48
|
702 {
|
|
70
|
703 strcpy (Errmsg, buf);
|
|
|
704 return NOTOK;
|
|
48
|
705 }
|
|
70
|
706
|
|
|
707 while (1)
|
|
|
708 {
|
|
|
709 switch (multiline (buf, sizeof buf, sfi))
|
|
|
710 {
|
|
|
711 case OK:
|
|
|
712 (*action)(buf, arg);
|
|
|
713 break;
|
|
|
714 case DONE:
|
|
|
715 return OK;
|
|
|
716 case NOTOK:
|
|
|
717 strcpy (Errmsg, buf);
|
|
|
718 return NOTOK;
|
|
|
719 }
|
|
|
720 }
|
|
0
|
721 }
|
|
|
722
|
|
70
|
723 getline (buf, n, f)
|
|
|
724 char *buf;
|
|
|
725 register int n;
|
|
|
726 FILE *f;
|
|
0
|
727 {
|
|
70
|
728 register char *p;
|
|
|
729 int c;
|
|
|
730
|
|
|
731 p = buf;
|
|
|
732 while (--n > 0 && (c = fgetc (f)) != EOF)
|
|
|
733 if ((*p++ = c) == '\n') break;
|
|
|
734
|
|
|
735 if (ferror (f))
|
|
|
736 {
|
|
|
737 strcpy (buf, "error on connection");
|
|
|
738 return NOTOK;
|
|
|
739 }
|
|
|
740
|
|
|
741 if (c == EOF && p == buf)
|
|
|
742 {
|
|
|
743 strcpy (buf, "connection closed by foreign host");
|
|
|
744 return DONE;
|
|
|
745 }
|
|
|
746
|
|
|
747 *p = NULL;
|
|
|
748 if (*--p == '\n') *p = NULL;
|
|
|
749 if (*--p == '\r') *p = NULL;
|
|
|
750 return OK;
|
|
0
|
751 }
|
|
|
752
|
|
70
|
753 multiline (buf, n, f)
|
|
|
754 char *buf;
|
|
|
755 register int n;
|
|
|
756 FILE *f;
|
|
|
757 {
|
|
|
758 if (getline (buf, n, f) != OK) return NOTOK;
|
|
|
759 if (*buf == '.')
|
|
|
760 {
|
|
|
761 if (*(buf+1) == NULL)
|
|
|
762 return DONE;
|
|
|
763 else
|
|
|
764 strcpy (buf, buf+1);
|
|
|
765 }
|
|
|
766 return OK;
|
|
|
767 }
|
|
|
768
|
|
|
769 char *
|
|
|
770 get_errmsg ()
|
|
|
771 {
|
|
|
772 return strerror (errno);
|
|
|
773 }
|
|
|
774
|
|
|
775 putline (buf, err, f)
|
|
|
776 char *buf;
|
|
|
777 char *err;
|
|
|
778 FILE *f;
|
|
0
|
779 {
|
|
70
|
780 fprintf (f, "%s\r\n", buf);
|
|
|
781 fflush (f);
|
|
|
782 if (ferror (f))
|
|
|
783 {
|
|
|
784 strcpy (err, "lost connection");
|
|
|
785 return NOTOK;
|
|
|
786 }
|
|
|
787 return OK;
|
|
|
788 }
|
|
|
789
|
|
|
790 mbx_write (line, mbf)
|
|
|
791 char *line;
|
|
|
792 FILE *mbf;
|
|
|
793 {
|
|
|
794 fputs (line, mbf);
|
|
|
795 fputc (0x0a, mbf);
|
|
|
796 }
|
|
|
797
|
|
|
798 mbx_delimit_begin (mbf)
|
|
|
799 FILE *mbf;
|
|
|
800 {
|
|
|
801 fputs ("\f\n0, unseen,,\n", mbf);
|
|
|
802 }
|
|
|
803
|
|
|
804 mbx_delimit_end (mbf)
|
|
|
805 FILE *mbf;
|
|
|
806 {
|
|
|
807 putc ('\037', mbf);
|
|
0
|
808 }
|
|
|
809
|
|
|
810 #endif /* MAIL_USE_POP */
|
|
|
811
|
|
|
812 #ifndef HAVE_STRERROR
|
|
70
|
813 char *
|
|
|
814 strerror (errnum)
|
|
|
815 int errnum;
|
|
0
|
816 {
|
|
|
817 extern char *sys_errlist[];
|
|
|
818 extern int sys_nerr;
|
|
|
819
|
|
|
820 if (errnum >= 0 && errnum < sys_nerr)
|
|
|
821 return sys_errlist[errnum];
|
|
|
822 return (char *) "Unknown error";
|
|
|
823 }
|
|
|
824
|
|
|
825 #endif /* ! HAVE_STRERROR */
|
