annotate mcabber/mcabber/pgp.c @ 2233:90c25a29fb35

New option: 'gpg_path' The path to the gpg binary can now be specified in order to force the use of GnuPG version 1 on systems which have both versions installed.
author Holger Weiß <holger@zedat.fu-berlin.de>
date Sat, 21 Nov 2015 17:44:55 +0100
parents 778280b01bcb
children 232c26383fc4
rev   line source
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1 /*
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2 * pgp.c -- PGP utility functions
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3 *
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4 * Copyright (C) 2006-2015 Mikael Berthe <mikael@lilotux.net>
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5 * Some parts inspired by centericq (impgp.cc)
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6 *
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7 * This program 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 of the License, or (at
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10 * your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * 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 this program; if not, write to the Free Software
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19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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20 * USA
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21 */
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22
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23 #include <config.h>
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24
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25 #ifdef HAVE_GPGME
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26
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27 #include <stdlib.h>
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28 #include <string.h>
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29 #include <unistd.h>
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30 #include <locale.h>
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31 #include <sys/mman.h>
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32 #include <glib.h>
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33
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34 #include "pgp.h"
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35 #include "settings.h"
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36 #include "logprint.h"
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37
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38 #define MIN_GPGME_VERSION "1.1.0"
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39
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40 static struct gpg_struct
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41 {
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42 int enabled;
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43 int version1;
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44 char *private_key;
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45 char *passphrase;
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46 } gpg;
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47
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48
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49 // gpg_init(priv_key, passphrase)
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50 // Initialize the GPG sub-systems. This function must be invoked early.
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51 // Note: priv_key & passphrase are optional, they can be set later.
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52 // This function returns 0 if gpgme is available and initialized;
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53 // if not it returns the gpgme error code.
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54 int gpg_init(const char *priv_key, const char *passphrase)
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55 {
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56 gpgme_error_t err;
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57
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58 gpgme_ctx_t ctx;
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59 gpgme_engine_info_t info;
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60 const char *gpg_path;
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61
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62 // Check for version and OpenPGP protocol support.
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63 if (!gpgme_check_version(MIN_GPGME_VERSION)) {
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64 scr_LogPrint(LPRINT_LOGNORM,
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65 "GPGME initialization error: Bad library version");
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66 return -1;
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67 }
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68
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69 err = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
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70 if (err) {
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71 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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72 "GPGME initialization error: %s", gpgme_strerror(err));
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73 return err;
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74 }
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75
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76 // Set the locale information.
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77 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
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78 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
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79
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80 // The path to the gpg binary can be specified in order to force
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81 // version 1, for example.
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82 gpg_path = settings_opt_get("gpg_path");
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83 if (gpg_path) {
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84 err = gpgme_set_engine_info(GPGME_PROTOCOL_OpenPGP, gpg_path, NULL);
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85 if (err) return -1;
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86 }
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87
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88 // Store private data.
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89 gpg_set_private_key(priv_key);
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90 gpg_set_passphrase(passphrase);
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91
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92 err = gpgme_new(&ctx);
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93 if (err) return -1;
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94
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95 // Check OpenPGP engine version; with version 2+ the agent is mandatory
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96 // and we do not manage the passphrase.
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97 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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98 if (err) return -1;
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99
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100 err = gpgme_get_engine_info (&info);
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101 if (!err) {
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102 while (info && info->protocol != gpgme_get_protocol (ctx))
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103 info = info->next;
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104
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105 if (info && info->version) {
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106 if (!strncmp(info->version, "1.", 2))
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107 gpg.version1 = TRUE;
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108 scr_log_print(LPRINT_DEBUG, "GPGME: Engine version is '%s'.",
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109 info->version);
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110 }
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111 }
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112
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113 gpgme_release(ctx);
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114 gpg.enabled = 1;
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115 return 0;
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116 }
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117
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118 // gpg_is_version1()
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119 // Return TRUE if the GnuPG OpenPGP engine version is 1.x
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120 int gpg_is_version1(void)
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121 {
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122 return gpg.version1;
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123 }
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124
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125 // gpg_terminate()
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126 // Destroy data and free memory.
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127 void gpg_terminate(void)
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128 {
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129 gpg.enabled = 0;
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130 gpg_set_passphrase(NULL);
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131 gpg_set_private_key(NULL);
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132 }
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133
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134 // gpg_set_passphrase(passphrase)
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135 // Set the current passphrase (use NULL to erase it).
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136 void gpg_set_passphrase(const char *passphrase)
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137 {
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138 // Remove current passphrase
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139 if (gpg.passphrase) {
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140 ssize_t len = strlen(gpg.passphrase);
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141 memset(gpg.passphrase, 0, len);
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142 munlock(gpg.passphrase, len);
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143 g_free(gpg.passphrase);
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144 }
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145 if (passphrase) {
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146 gpg.passphrase = g_strdup(passphrase);
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147 mlock(gpg.passphrase, strlen(gpg.passphrase));
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148 } else {
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149 gpg.passphrase = NULL;
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150 }
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151 }
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152
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153 // gpg_set_private_key(keyid)
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154 // Set the current private key id (use NULL to unset it).
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155 void gpg_set_private_key(const char *priv_keyid)
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156 {
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157 g_free(gpg.private_key);
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158 if (priv_keyid)
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159 gpg.private_key = g_strdup(priv_keyid);
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160 else
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161 gpg.private_key = NULL;
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162 }
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163
2188
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164 // gpg_get_private_key_id()
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165 // Return the current private key id (static string).
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166 const char *gpg_get_private_key_id(void)
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167 {
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168 return gpg.private_key;
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169 }
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170
1041
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171 // strip_header_footer(data)
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172 // Remove PGP header & footer from data.
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173 // Return a new string, or NULL.
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174 // The string must be freed by the caller with g_free() when no longer needed.
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175 static char *strip_header_footer(const char *data)
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176 {
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177 char *p, *q;
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178
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179 if (!data)
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180 return NULL;
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181
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182 // p: beginning of real data
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183 // q: end of real data
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184
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185 // Strip header (to the first empty line)
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186 p = strstr(data, "\n\n");
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187 if (!p)
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188 return g_strdup(data);
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189
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190 // Strip footer
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191 // We want to remove the last lines, until the line beginning with a '-'
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192 p += 2;
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193 for (q = p ; *q; q++) ;
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194 // (q is at the end of data now)
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195 for (q--; q > p && (*q != '\n' || *(q+1) != '-'); q--) ;
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196
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197 if (q <= p)
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198 return NULL; // Shouldn't happen...
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199
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200 return g_strndup(p, q-p);
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201 }
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202
1598
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203 // GCC ignores casts to void, thus we need to hack around that
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204 static inline void ignore(void*x) {}
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205
1041
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206 // passphrase_cb()
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207 // GPGME passphrase callback function.
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208 static gpgme_error_t passphrase_cb(void *hook, const char *uid_hint,
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209 const char *passphrase_info, int prev_was_bad, int fd)
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210 {
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211 ssize_t len;
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212
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213 // Abort if we do not have the password.
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214 if (!gpg.passphrase) {
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215 ignore((void*)write(fd, "\n", 1)); // We have an error anyway, thus it does
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216 // not matter if we fail again.
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217 return gpg_error(GPG_ERR_CANCELED);
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218 }
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219
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220 // Write the passphrase to the file descriptor.
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221 len = strlen(gpg.passphrase);
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222 if (write(fd, gpg.passphrase, len) != len)
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223 return gpg_error(GPG_ERR_CANCELED);
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224 if (write(fd, "\n", 1) != 1)
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225 return gpg_error(GPG_ERR_CANCELED);
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226
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227 return 0; // Success
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228 }
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229
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230 // gpg_verify(gpg_data, text, *sigsum)
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231 // Verify that gpg_data is a correct signature for text.
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232 // Return the key id (or fingerprint), and set *sigsum to
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233 // the gpgme signature summary value.
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234 // The returned string must be freed with g_free() after use.
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235 char *gpg_verify(const char *gpg_data, const char *text,
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236 gpgme_sigsum_t *sigsum)
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237 {
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238 gpgme_ctx_t ctx;
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239 gpgme_data_t data_sign, data_text;
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240 char *data;
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241 char *verified_key = NULL;
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242 gpgme_key_t key;
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243 gpgme_error_t err;
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244 const char prefix[] = "-----BEGIN PGP SIGNATURE-----\n\n";
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245 const char suffix[] = "\n-----END PGP SIGNATURE-----\n";
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246
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247 // Reset the summary.
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248 *sigsum = 0;
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249
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250 if (!gpg.enabled)
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251 return NULL;
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252
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253 err = gpgme_new(&ctx);
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254 if (err) {
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255 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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256 "GPGME error: %s", gpgme_strerror(err));
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257 return NULL;
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258 }
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259
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260 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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261
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262 // Surround the given data with the prefix & suffix
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263 data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data));
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264 strcpy(data, prefix);
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265 strcat(data, gpg_data);
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266 strcat(data, suffix);
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267
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268 err = gpgme_data_new_from_mem(&data_sign, data, strlen(data), 0);
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269 if (!err) {
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270 err = gpgme_data_new_from_mem(&data_text, text, strlen(text), 0);
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271 if (!err) {
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272 err = gpgme_op_verify(ctx, data_sign, data_text, 0);
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273 if (!err) {
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274 gpgme_verify_result_t vr = gpgme_op_verify_result(ctx);
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275 if (vr && vr->signatures) {
2200
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276 gpgme_signature_t s = NULL;
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277 // check all signatures and stop if the first could be verified
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278 for (s = vr->signatures; s && !verified_key; s = s->next) {
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279 // Found the fingerprint. Let's try to get the key id.
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280 if (NULL != s->fpr) {
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281 if (!gpgme_get_key(ctx, s->fpr, &key, 0)) {
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282 if (key) {
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283 verified_key = g_strdup(key->subkeys->keyid);
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284 gpgme_key_release(key);
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285 }
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286 }
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287 }
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288 *sigsum = s->summary;
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Sven Gaerner <sgaerner@gmx.net>
parents: 2196
diff changeset
289 // For some reason summary could be 0 when status is 0 too,
fec172dbacc7 Check all signatures and stop immediately if one could be verified
Sven Gaerner <sgaerner@gmx.net>
parents: 2196
diff changeset
290 // which means the signature is valid...
fec172dbacc7 Check all signatures and stop immediately if one could be verified
Sven Gaerner <sgaerner@gmx.net>
parents: 2196
diff changeset
291 if ((!*sigsum) && (!s->status))
fec172dbacc7 Check all signatures and stop immediately if one could be verified
Sven Gaerner <sgaerner@gmx.net>
parents: 2196
diff changeset
292 *sigsum = GPGME_SIGSUM_GREEN;
fec172dbacc7 Check all signatures and stop immediately if one could be verified
Sven Gaerner <sgaerner@gmx.net>
parents: 2196
diff changeset
293 }
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
294 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
295 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
296 gpgme_data_release(data_text);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
297 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
298 gpgme_data_release(data_sign);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
299 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
300 if (err)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
301 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
1047
0dc104d51dce PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents: 1041
diff changeset
302 "GPGME verification error: %s", gpgme_strerror(err));
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
303 gpgme_release(ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
304 g_free(data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
305 return verified_key;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
306 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
307
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
308 // gpg_sign(gpg_data)
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Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
309 // Return a signature of gpg_data (or NULL).
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parents:
diff changeset
310 // The returned string must be freed with g_free() after use.
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
311 char *gpg_sign(const char *gpg_data)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
312 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
313 gpgme_ctx_t ctx;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
314 gpgme_data_t in, out;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
315 char *signed_data = NULL;
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Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
316 size_t nread;
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Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
317 gpgme_key_t key;
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Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
318 gpgme_error_t err;
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parents:
diff changeset
319
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
320 if (!gpg.enabled || !gpg.private_key)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
321 return NULL;
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
322
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Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
323 err = gpgme_new(&ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
324 if (err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
325 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
326 "GPGME error: %s", gpgme_strerror(err));
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
327 return NULL;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
328 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
329
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Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
330 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
331 gpgme_set_textmode(ctx, 0);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
332 gpgme_set_armor(ctx, 1);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
333
2196
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
334 if (gpg.version1) {
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
335 // GPG_AGENT_INFO isn't used by GnuPG version 2+
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
336 char *p = getenv("GPG_AGENT_INFO");
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
337 if (!(p && strchr(p, ':')))
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
338 gpgme_set_passphrase_cb(ctx, passphrase_cb, 0);
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
339 }
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
340
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
341 err = gpgme_get_key(ctx, gpg.private_key, &key, 1);
1105
265e1d873d3e PGP: Improve checks for missing keys
Mikael Berthe <mikael@lilotux.net>
parents: 1057
diff changeset
342 if (err || !key) {
1049
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
343 scr_LogPrint(LPRINT_LOGNORM, "GPGME error: private key not found");
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
344 gpgme_release(ctx);
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
345 return NULL;
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
346 }
1049
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
347
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
348 gpgme_signers_clear(ctx);
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
349 gpgme_signers_add(ctx, key);
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
350 gpgme_key_release(key);
ad5de4d1ee56 PGP: Give a more useful error message when the private key isn't found
Mikael Berthe <mikael@lilotux.net>
parents: 1047
diff changeset
351 err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0);
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
352 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
353 err = gpgme_data_new(&out);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
354 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
355 err = gpgme_op_sign(ctx, in, out, GPGME_SIG_MODE_DETACH);
2202
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
356 if (err) {
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
357 gpgme_data_release(out);
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
358 } else {
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
359 signed_data = gpgme_data_release_and_get_mem(out, &nread);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
360 if (signed_data) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
361 // We need to add a trailing NULL
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
362 char *dd = g_strndup(signed_data, nread);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
363 free(signed_data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
364 signed_data = strip_header_footer(dd);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
365 g_free(dd);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
366 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
367 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
368 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
369 gpgme_data_release(in);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
370 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
371 if (err && err != GPG_ERR_CANCELED)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
372 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
1047
0dc104d51dce PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents: 1041
diff changeset
373 "GPGME signature error: %s", gpgme_strerror(err));
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
374 gpgme_release(ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
375 return signed_data;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
376 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
377
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
378 // gpg_decrypt(gpg_data)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
379 // Return decrypted gpg_data (or NULL).
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
380 // The returned string must be freed with g_free() after use.
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
381 char *gpg_decrypt(const char *gpg_data)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
382 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
383 gpgme_ctx_t ctx;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
384 gpgme_data_t in, out;
2196
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
385 char *data;
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
386 char *decrypted_data = NULL;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
387 size_t nread;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
388 gpgme_error_t err;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
389 const char prefix[] = "-----BEGIN PGP MESSAGE-----\n\n";
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
390 const char suffix[] = "\n-----END PGP MESSAGE-----\n";
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
391
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
392 if (!gpg.enabled)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
393 return NULL;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
394
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
395 err = gpgme_new(&ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
396 if (err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
397 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
398 "GPGME error: %s", gpgme_strerror(err));
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
399 return NULL;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
400 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
401
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
402 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
403
2196
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
404 if (gpg.version1) {
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
405 // GPG_AGENT_INFO isn't used by GnuPG version 2+
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
406 char *p = getenv("GPG_AGENT_INFO");
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
407 if (!(p && strchr(p, ':')))
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
408 gpgme_set_passphrase_cb(ctx, passphrase_cb, 0);
8811fe9d6ef0 Improve support for GnuPG v2+
Mikael Berthe <mikael@lilotux.net>
parents: 2195
diff changeset
409 }
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
410
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
411 // Surround the given data with the prefix & suffix
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
412 data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data));
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
413 strcpy(data, prefix);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
414 strcat(data, gpg_data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
415 strcat(data, suffix);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
416
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
417 err = gpgme_data_new_from_mem(&in, data, strlen(data), 0);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
418 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
419 err = gpgme_data_new(&out);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
420 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
421 err = gpgme_op_decrypt(ctx, in, out);
2202
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
422 if (err) {
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
423 gpgme_data_release(out);
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
424 } else {
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
425 decrypted_data = gpgme_data_release_and_get_mem(out, &nread);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
426 if (decrypted_data) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
427 // We need to add a trailing NULL
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
428 char *dd = g_strndup(decrypted_data, nread);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
429 free(decrypted_data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
430 decrypted_data = dd;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
431 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
432 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
433 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
434 gpgme_data_release(in);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
435 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
436 if (err && err != GPG_ERR_CANCELED)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
437 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
1047
0dc104d51dce PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents: 1041
diff changeset
438 "GPGME decryption error: %s", gpgme_strerror(err));
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
439 gpgme_release(ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
440 g_free(data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
441 return decrypted_data;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
442 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
443
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
444 // gpg_encrypt(gpg_data, keyids[], n)
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
445 // Return encrypted gpg_data with the n keys from the keyids array (or NULL).
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
446 // The returned string must be freed with g_free() after use.
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
447 char *gpg_encrypt(const char *gpg_data, const char *keyids[], size_t nkeys)
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
448 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
449 gpgme_ctx_t ctx;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
450 gpgme_data_t in, out;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
451 char *encrypted_data = NULL, *edata;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
452 size_t nread;
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
453 gpgme_key_t *keys;
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
454 gpgme_error_t err;
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
455 unsigned i;
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
456
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
457 if (!gpg.enabled)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
458 return NULL;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
459
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
460 if (!keyids || !nkeys) {
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
461 return NULL;
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
462 }
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
463
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
464 err = gpgme_new(&ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
465 if (err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
466 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
467 "GPGME error: %s", gpgme_strerror(err));
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
468 return NULL;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
469 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
470
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
471 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
472 gpgme_set_textmode(ctx, 0);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
473 gpgme_set_armor(ctx, 1);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
474
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
475 keys = g_new0(gpgme_key_t, 1+nkeys);
2195
40ddaebeb81e PGP: Add a memory allocation check and compilation directives
Mikael Berthe <mikael@lilotux.net>
parents: 2188
diff changeset
476 if (!keys) {
40ddaebeb81e PGP: Add a memory allocation check and compilation directives
Mikael Berthe <mikael@lilotux.net>
parents: 2188
diff changeset
477 gpgme_release(ctx);
40ddaebeb81e PGP: Add a memory allocation check and compilation directives
Mikael Berthe <mikael@lilotux.net>
parents: 2188
diff changeset
478 return NULL;
40ddaebeb81e PGP: Add a memory allocation check and compilation directives
Mikael Berthe <mikael@lilotux.net>
parents: 2188
diff changeset
479 }
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
480
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
481 for (i = 0; i < nkeys; i++) {
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
482 err = gpgme_get_key(ctx, keyids[i], &keys[i], 0);
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
483 if (err || !keys[i]) {
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
484 scr_LogPrint(LPRINT_LOGNORM, "GPGME encryption error: cannot use key %s",
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
485 keyids[i]);
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
486 // We need to have err not null to ensure we won't try to encrypt
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
487 // without this key.
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
488 if (!err) err = GPG_ERR_UNKNOWN_ERRNO;
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
489 break;
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
490 }
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
491 }
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
492
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
493 if (!err) {
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
494 err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
495 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
496 err = gpgme_data_new(&out);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
497 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
498 err = gpgme_op_encrypt(ctx, keys, GPGME_ENCRYPT_ALWAYS_TRUST, in, out);
2202
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
499 if (err) {
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
500 gpgme_data_release(out);
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
501 } else {
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
502 encrypted_data = gpgme_data_release_and_get_mem(out, &nread);
2202
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
503 if (encrypted_data) {
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
504 // We need to add a trailing NULL
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
505 char *dd = g_strndup(encrypted_data, nread);
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
506 free(encrypted_data);
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
507 encrypted_data = dd;
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
508 }
ff18feb75a6d PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents: 2200
diff changeset
509 }
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
510 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
511 gpgme_data_release(in);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
512 }
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
513
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
514 if (err && err != GPG_ERR_CANCELED) {
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
515 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
516 "GPGME encryption error: %s", gpgme_strerror(err));
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
517 }
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
518 }
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
519
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
520 for (i = 0; keys[i]; i++)
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
521 gpgme_key_release(keys[i]);
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
522 g_free(keys);
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
523 gpgme_release(ctx);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
524 edata = strip_header_footer(encrypted_data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
525 if (encrypted_data)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
526 free(encrypted_data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
527 return edata;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
528 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
529
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
530 // gpg_test_passphrase()
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
531 // Test the current gpg.passphrase with gpg.private_key.
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
532 // If the test doesn't succeed, the passphrase is cleared and a non-null
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
533 // value is returned.
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
534 int gpg_test_passphrase(void)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
535 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
536 char *s;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
537
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
538 if (!gpg.private_key)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
539 return -1; // No private key...
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
540
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
541 s = gpg_sign("test");
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
542 if (s) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
543 free(s);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
544 return 0; // Ok, test successful
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
545 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
546 // The passphrase is wrong (if provided)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
547 gpg_set_passphrase(NULL);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
548 return -1;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
549 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
550
1413
f89844a0448a Remove useless inlines
Mikael Berthe <mikael@lilotux.net>
parents: 1238
diff changeset
551 int gpg_enabled(void)
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
552 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
553 return gpg.enabled;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
554 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
555
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
556 #else /* not HAVE_GPGME */
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
557
1413
f89844a0448a Remove useless inlines
Mikael Berthe <mikael@lilotux.net>
parents: 1238
diff changeset
558 int gpg_enabled(void)
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
559 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
560 return 0;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
561 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
562
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
563 #endif /* HAVE_GPGME */
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
564
1811
e6d355e50d7a Update Vim modelines
Mikael Berthe <mikael@lilotux.net>
parents: 1668
diff changeset
565 /* vim: set et cindent cinoptions=>2\:2(0 ts=2 sw=2: For Vim users... */