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annotate mcabber/mcabber/pgp.c @ 2196:8811fe9d6ef0

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Improve support for GnuPG v2+ If the gnupg engine detected is not 1.x, do not check the environment variable GPG_AGENT_INFO and do not set up a password callback.
author Mikael Berthe <mikael@lilotux.net>
date Wed, 07 Oct 2015 21:58:38 +0200
parents 40ddaebeb81e
children fec172dbacc7
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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 "logprint.h"
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36
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37 #define MIN_GPGME_VERSION "1.0.0"
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38
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39 static struct gpg_struct
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40 {
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41 int enabled;
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42 int version1;
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43 char *private_key;
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44 char *passphrase;
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45 } gpg;
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46
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47
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48 // gpg_init(priv_key, passphrase)
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49 // Initialize the GPG sub-systems. This function must be invoked early.
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50 // Note: priv_key & passphrase are optional, they can be set later.
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51 // This function returns 0 if gpgme is available and initialized;
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52 // if not it returns the gpgme error code.
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53 int gpg_init(const char *priv_key, const char *passphrase)
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54 {
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55 gpgme_error_t err;
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56
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57 gpgme_ctx_t ctx;
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58 gpgme_engine_info_t info;
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59
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60 // Check for version and OpenPGP protocol support.
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61 if (!gpgme_check_version(MIN_GPGME_VERSION)) {
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62 scr_LogPrint(LPRINT_LOGNORM,
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63 "GPGME initialization error: Bad library version");
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64 return -1;
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65 }
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66
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67 err = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
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68 if (err) {
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69 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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70 "GPGME initialization error: %s", gpgme_strerror(err));
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71 return err;
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72 }
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73
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74 // Set the locale information.
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75 gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL));
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76 gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL));
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77
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78 // Store private data.
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79 gpg_set_private_key(priv_key);
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80 gpg_set_passphrase(passphrase);
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81
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82 err = gpgme_new(&ctx);
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83 if (err) return -1;
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84
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85 // Check OpenPGP engine version; with version 2+ the agent is mandatory
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86 // and we do not manage the passphrase.
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87 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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88 if (err) return -1;
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89
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90 err = gpgme_get_engine_info (&info);
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91 if (!err) {
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92 while (info && info->protocol != gpgme_get_protocol (ctx))
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93 info = info->next;
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94
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95 if (info && info->version) {
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96 if (!strncmp(info->version, "1.", 2))
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97 gpg.version1 = TRUE;
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98 scr_log_print(LPRINT_DEBUG, "GPGME: Engine version is '%s'.",
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99 info->version);
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100 }
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101 }
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102
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103 gpg.enabled = 1;
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104 return 0;
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105 }
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106
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107 // gpg_is_version1()
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108 // Return TRUE if the GnuPG OpenPGP engine version is 1.x
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109 int gpg_is_version1(void)
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110 {
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111 return gpg.version1;
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112 }
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113
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114 // gpg_terminate()
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115 // Destroy data and free memory.
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116 void gpg_terminate(void)
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117 {
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118 gpg.enabled = 0;
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119 gpg_set_passphrase(NULL);
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120 gpg_set_private_key(NULL);
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121 }
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122
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123 // gpg_set_passphrase(passphrase)
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124 // Set the current passphrase (use NULL to erase it).
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125 void gpg_set_passphrase(const char *passphrase)
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126 {
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127 // Remove current passphrase
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128 if (gpg.passphrase) {
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129 ssize_t len = strlen(gpg.passphrase);
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130 memset(gpg.passphrase, 0, len);
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131 munlock(gpg.passphrase, len);
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132 g_free(gpg.passphrase);
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133 }
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134 if (passphrase) {
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135 gpg.passphrase = g_strdup(passphrase);
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136 mlock(gpg.passphrase, strlen(gpg.passphrase));
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137 } else {
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138 gpg.passphrase = NULL;
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139 }
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140 }
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141
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142 // gpg_set_private_key(keyid)
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143 // Set the current private key id (use NULL to unset it).
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144 void gpg_set_private_key(const char *priv_keyid)
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145 {
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146 g_free(gpg.private_key);
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147 if (priv_keyid)
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148 gpg.private_key = g_strdup(priv_keyid);
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149 else
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150 gpg.private_key = NULL;
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151 }
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152
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153 // gpg_get_private_key_id()
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154 // Return the current private key id (static string).
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155 const char *gpg_get_private_key_id(void)
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156 {
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157 return gpg.private_key;
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158 }
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159
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160 // strip_header_footer(data)
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161 // Remove PGP header & footer from data.
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162 // Return a new string, or NULL.
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163 // The string must be freed by the caller with g_free() when no longer needed.
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164 static char *strip_header_footer(const char *data)
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165 {
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166 char *p, *q;
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167
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168 if (!data)
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169 return NULL;
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170
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171 // p: beginning of real data
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172 // q: end of real data
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173
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174 // Strip header (to the first empty line)
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175 p = strstr(data, "\n\n");
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176 if (!p)
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177 return g_strdup(data);
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178
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179 // Strip footer
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180 // We want to remove the last lines, until the line beginning with a '-'
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181 p += 2;
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182 for (q = p ; *q; q++) ;
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183 // (q is at the end of data now)
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184 for (q--; q > p && (*q != '\n' || *(q+1) != '-'); q--) ;
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185
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186 if (q <= p)
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187 return NULL; // Shouldn't happen...
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188
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189 return g_strndup(p, q-p);
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190 }
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191
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192 // GCC ignores casts to void, thus we need to hack around that
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193 static inline void ignore(void*x) {}
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194
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195 // passphrase_cb()
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196 // GPGME passphrase callback function.
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197 static gpgme_error_t passphrase_cb(void *hook, const char *uid_hint,
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198 const char *passphrase_info, int prev_was_bad, int fd)
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199 {
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200 ssize_t len;
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201
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202 // Abort if we do not have the password.
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203 if (!gpg.passphrase) {
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204 ignore((void*)write(fd, "\n", 1)); // We have an error anyway, thus it does
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205 // not matter if we fail again.
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206 return gpg_error(GPG_ERR_CANCELED);
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207 }
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208
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209 // Write the passphrase to the file descriptor.
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210 len = strlen(gpg.passphrase);
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211 if (write(fd, gpg.passphrase, len) != len)
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212 return gpg_error(GPG_ERR_CANCELED);
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213 if (write(fd, "\n", 1) != 1)
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214 return gpg_error(GPG_ERR_CANCELED);
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215
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216 return 0; // Success
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217 }
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218
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219 // gpg_verify(gpg_data, text, *sigsum)
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220 // Verify that gpg_data is a correct signature for text.
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221 // Return the key id (or fingerprint), and set *sigsum to
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222 // the gpgme signature summary value.
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223 // The returned string must be freed with g_free() after use.
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224 char *gpg_verify(const char *gpg_data, const char *text,
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225 gpgme_sigsum_t *sigsum)
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226 {
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227 gpgme_ctx_t ctx;
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228 gpgme_data_t data_sign, data_text;
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229 char *data;
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230 char *verified_key = NULL;
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231 gpgme_key_t key;
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232 gpgme_error_t err;
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233 const char prefix[] = "-----BEGIN PGP SIGNATURE-----\n\n";
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234 const char suffix[] = "\n-----END PGP SIGNATURE-----\n";
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235
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236 // Reset the summary.
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237 *sigsum = 0;
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238
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239 if (!gpg.enabled)
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240 return NULL;
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241
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242 err = gpgme_new(&ctx);
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243 if (err) {
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244 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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245 "GPGME error: %s", gpgme_strerror(err));
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246 return NULL;
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247 }
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248
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249 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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250
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251 // Surround the given data with the prefix & suffix
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252 data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data));
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253 strcpy(data, prefix);
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254 strcat(data, gpg_data);
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255 strcat(data, suffix);
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256
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257 err = gpgme_data_new_from_mem(&data_sign, data, strlen(data), 0);
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258 if (!err) {
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259 err = gpgme_data_new_from_mem(&data_text, text, strlen(text), 0);
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260 if (!err) {
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261 err = gpgme_op_verify(ctx, data_sign, data_text, 0);
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262 if (!err) {
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263 gpgme_verify_result_t vr = gpgme_op_verify_result(ctx);
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264 if (vr && vr->signatures) {
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265 char *r = vr->signatures->fpr;
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266 // Found the fingerprint. Let's try to get the key id.
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267 if (!gpgme_get_key(ctx, r, &key, 0) && key) {
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268 r = key->subkeys->keyid;
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269 gpgme_key_release(key);
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270 }
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271 // r is a static variable, let's copy it.
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272 verified_key = g_strdup(r);
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273 *sigsum = vr->signatures->summary;
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274 // For some reason summary could be 0 when status is 0 too,
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275 // which means the signature is valid...
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276 if (!*sigsum && !vr->signatures->status)
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277 *sigsum = GPGME_SIGSUM_GREEN;
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278 }
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279 }
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280 gpgme_data_release(data_text);
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281 }
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282 gpgme_data_release(data_sign);
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283 }
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284 if (err)
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285 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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parents: 1041
diff changeset
286 "GPGME verification error: %s", gpgme_strerror(err));
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287 gpgme_release(ctx);
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288 g_free(data);
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289 return verified_key;
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290 }
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291
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292 // gpg_sign(gpg_data)
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293 // Return a signature of gpg_data (or NULL).
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294 // The returned string must be freed with g_free() after use.
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295 char *gpg_sign(const char *gpg_data)
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296 {
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297 gpgme_ctx_t ctx;
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298 gpgme_data_t in, out;
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299 char *signed_data = NULL;
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300 size_t nread;
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301 gpgme_key_t key;
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302 gpgme_error_t err;
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303
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304 if (!gpg.enabled || !gpg.private_key)
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305 return NULL;
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306
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307 err = gpgme_new(&ctx);
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308 if (err) {
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309 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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310 "GPGME error: %s", gpgme_strerror(err));
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311 return NULL;
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312 }
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313
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314 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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315 gpgme_set_textmode(ctx, 0);
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316 gpgme_set_armor(ctx, 1);
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317
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318 if (gpg.version1) {
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319 // GPG_AGENT_INFO isn't used by GnuPG version 2+
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320 char *p = getenv("GPG_AGENT_INFO");
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321 if (!(p && strchr(p, ':')))
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322 gpgme_set_passphrase_cb(ctx, passphrase_cb, 0);
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323 }
1041
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324
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325 err = gpgme_get_key(ctx, gpg.private_key, &key, 1);
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326 if (err || !key) {
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327 scr_LogPrint(LPRINT_LOGNORM, "GPGME error: private key not found");
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328 gpgme_release(ctx);
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329 return NULL;
1041
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330 }
1049
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331
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332 gpgme_signers_clear(ctx);
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333 gpgme_signers_add(ctx, key);
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334 gpgme_key_release(key);
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335 err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0);
1041
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336 if (!err) {
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337 err = gpgme_data_new(&out);
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338 if (!err) {
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339 err = gpgme_op_sign(ctx, in, out, GPGME_SIG_MODE_DETACH);
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340 if (!err) {
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341 signed_data = gpgme_data_release_and_get_mem(out, &nread);
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342 if (signed_data) {
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343 // We need to add a trailing NULL
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344 char *dd = g_strndup(signed_data, nread);
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345 free(signed_data);
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346 signed_data = strip_header_footer(dd);
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347 g_free(dd);
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348 }
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349 } else {
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diff changeset
350 gpgme_data_release(out);
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351 }
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parents:
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352 }
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353 gpgme_data_release(in);
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354 }
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parents:
diff changeset
355 if (err && err != GPG_ERR_CANCELED)
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356 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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0dc104d51dce PGP: Better error messages
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parents: 1041
diff changeset
357 "GPGME signature error: %s", gpgme_strerror(err));
1041
d4b97a2423eb Introduce PGP utility functions
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358 gpgme_release(ctx);
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359 return signed_data;
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360 }
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361
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362 // gpg_decrypt(gpg_data)
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363 // Return decrypted gpg_data (or NULL).
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parents:
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364 // The returned string must be freed with g_free() after use.
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parents:
diff changeset
365 char *gpg_decrypt(const char *gpg_data)
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parents:
diff changeset
366 {
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diff changeset
367 gpgme_ctx_t ctx;
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368 gpgme_data_t in, out;
2196
8811fe9d6ef0 Improve support for GnuPG v2+
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diff changeset
369 char *data;
1041
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370 char *decrypted_data = NULL;
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parents:
diff changeset
371 size_t nread;
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parents:
diff changeset
372 gpgme_error_t err;
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373 const char prefix[] = "-----BEGIN PGP MESSAGE-----\n\n";
d4b97a2423eb Introduce PGP utility functions
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374 const char suffix[] = "\n-----END PGP MESSAGE-----\n";
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375
d4b97a2423eb Introduce PGP utility functions
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diff changeset
376 if (!gpg.enabled)
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diff changeset
377 return NULL;
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parents:
diff changeset
378
d4b97a2423eb Introduce PGP utility functions
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diff changeset
379 err = gpgme_new(&ctx);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
380 if (err) {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
381 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
382 "GPGME error: %s", gpgme_strerror(err));
d4b97a2423eb Introduce PGP utility functions
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diff changeset
383 return NULL;
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
384 }
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
385
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386 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
387
2196
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diff changeset
388 if (gpg.version1) {
8811fe9d6ef0 Improve support for GnuPG v2+
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parents: 2195
diff changeset
389 // GPG_AGENT_INFO isn't used by GnuPG version 2+
8811fe9d6ef0 Improve support for GnuPG v2+
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parents: 2195
diff changeset
390 char *p = getenv("GPG_AGENT_INFO");
8811fe9d6ef0 Improve support for GnuPG v2+
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parents: 2195
diff changeset
391 if (!(p && strchr(p, ':')))
8811fe9d6ef0 Improve support for GnuPG v2+
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parents: 2195
diff changeset
392 gpgme_set_passphrase_cb(ctx, passphrase_cb, 0);
8811fe9d6ef0 Improve support for GnuPG v2+
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parents: 2195
diff changeset
393 }
1041
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
394
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
395 // Surround the given data with the prefix & suffix
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
396 data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data));
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
397 strcpy(data, prefix);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
398 strcat(data, gpg_data);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
399 strcat(data, suffix);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
400
d4b97a2423eb Introduce PGP utility functions
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diff changeset
401 err = gpgme_data_new_from_mem(&in, data, strlen(data), 0);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
402 if (!err) {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
403 err = gpgme_data_new(&out);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
404 if (!err) {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
405 err = gpgme_op_decrypt(ctx, in, out);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
406 if (!err) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
407 decrypted_data = gpgme_data_release_and_get_mem(out, &nread);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
408 if (decrypted_data) {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
409 // We need to add a trailing NULL
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
410 char *dd = g_strndup(decrypted_data, nread);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
411 free(decrypted_data);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
412 decrypted_data = dd;
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
413 }
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
414 } else {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
415 gpgme_data_release(out);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
416 }
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
417 }
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
418 gpgme_data_release(in);
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
419 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
420 if (err && err != GPG_ERR_CANCELED)
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
421 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
1047
0dc104d51dce PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents: 1041
diff changeset
422 "GPGME decryption error: %s", gpgme_strerror(err));
1041
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
423 gpgme_release(ctx);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
424 g_free(data);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
425 return decrypted_data;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
426 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
427
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
428 // 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
429 // 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
430 // 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
431 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
432 {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
433 gpgme_ctx_t ctx;
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parents:
diff changeset
434 gpgme_data_t in, out;
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parents:
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435 char *encrypted_data = NULL, *edata;
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
436 size_t nread;
2187
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diff changeset
437 gpgme_key_t *keys;
1041
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parents:
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438 gpgme_error_t err;
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
439 unsigned i;
1041
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parents:
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440
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
441 if (!gpg.enabled)
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442 return NULL;
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443
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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diff changeset
444 if (!keyids || !nkeys) {
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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445 return NULL;
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parents: 1811
diff changeset
446 }
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
447
1041
d4b97a2423eb Introduce PGP utility functions
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448 err = gpgme_new(&ctx);
d4b97a2423eb Introduce PGP utility functions
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parents:
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449 if (err) {
d4b97a2423eb Introduce PGP utility functions
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450 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
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parents:
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451 "GPGME error: %s", gpgme_strerror(err));
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452 return NULL;
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parents:
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453 }
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parents:
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454
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455 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP);
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456 gpgme_set_textmode(ctx, 0);
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457 gpgme_set_armor(ctx, 1);
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parents:
diff changeset
458
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diff changeset
459 keys = g_new0(gpgme_key_t, 1+nkeys);
2195
40ddaebeb81e PGP: Add a memory allocation check and compilation directives
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parents: 2188
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460 if (!keys) {
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461 gpgme_release(ctx);
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462 return NULL;
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parents: 2188
diff changeset
463 }
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parents: 1811
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464
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465 for (i = 0; i < nkeys; i++) {
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parents: 1811
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466 err = gpgme_get_key(ctx, keyids[i], &keys[i], 0);
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467 if (err || !keys[i]) {
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468 scr_LogPrint(LPRINT_LOGNORM, "GPGME encryption error: cannot use key %s",
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parents: 1811
diff changeset
469 keyids[i]);
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parents: 1811
diff changeset
470 // We need to have err not null to ensure we won't try to encrypt
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diff changeset
471 // without this key.
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parents: 1811
diff changeset
472 if (!err) err = GPG_ERR_UNKNOWN_ERRNO;
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parents: 1811
diff changeset
473 break;
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parents: 1811
diff changeset
474 }
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parents: 1811
diff changeset
475 }
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parents: 1811
diff changeset
476
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
477 if (!err) {
1041
d4b97a2423eb Introduce PGP utility functions
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diff changeset
478 err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
479 if (!err) {
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parents:
diff changeset
480 err = gpgme_data_new(&out);
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parents:
diff changeset
481 if (!err) {
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parents:
diff changeset
482 err = gpgme_op_encrypt(ctx, keys, GPGME_ENCRYPT_ALWAYS_TRUST, in, out);
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parents:
diff changeset
483 if (!err)
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diff changeset
484 encrypted_data = gpgme_data_release_and_get_mem(out, &nread);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
485 else
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parents:
diff changeset
486 gpgme_data_release(out);
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parents:
diff changeset
487 }
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parents:
diff changeset
488 gpgme_data_release(in);
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parents:
diff changeset
489 }
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
490
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
491 if (err && err != GPG_ERR_CANCELED) {
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
492 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8,
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
493 "GPGME encryption error: %s", gpgme_strerror(err));
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parents: 1811
diff changeset
494 }
1041
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
495 }
2187
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents: 1811
diff changeset
496
e3b66c8ead4f PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents: 1811
diff changeset
497 for (i = 0; keys[i]; i++)
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parents: 1811
diff changeset
498 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
499 g_free(keys);
1041
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
500 gpgme_release(ctx);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
501 edata = strip_header_footer(encrypted_data);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
502 if (encrypted_data)
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
503 free(encrypted_data);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
504 return edata;
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
505 }
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
506
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
507 // gpg_test_passphrase()
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
508 // Test the current gpg.passphrase with gpg.private_key.
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
509 // If the test doesn't succeed, the passphrase is cleared and a non-null
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parents:
diff changeset
510 // value is returned.
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
511 int gpg_test_passphrase(void)
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
512 {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
513 char *s;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
514
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
515 if (!gpg.private_key)
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
516 return -1; // No private key...
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
517
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
518 s = gpg_sign("test");
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
519 if (s) {
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
520 free(s);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
521 return 0; // Ok, test successful
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
522 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
523 // The passphrase is wrong (if provided)
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
524 gpg_set_passphrase(NULL);
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
525 return -1;
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
526 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
527
1413
f89844a0448a Remove useless inlines
Mikael Berthe <mikael@lilotux.net>
parents: 1238
diff changeset
528 int gpg_enabled(void)
1041
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
529 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
530 return gpg.enabled;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
531 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
532
d4b97a2423eb Introduce PGP utility functions
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parents:
diff changeset
533 #else /* not HAVE_GPGME */
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
534
1413
f89844a0448a Remove useless inlines
Mikael Berthe <mikael@lilotux.net>
parents: 1238
diff changeset
535 int gpg_enabled(void)
1041
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
536 {
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
537 return 0;
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
538 }
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
539
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
540 #endif /* HAVE_GPGME */
d4b97a2423eb Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff changeset
541
1811
e6d355e50d7a Update Vim modelines
Mikael Berthe <mikael@lilotux.net>
parents: 1668
diff changeset
542 /* vim: set et cindent cinoptions=>2\:2(0 ts=2 sw=2: For Vim users... */