Mercurial > ~mikael > mcabber > hg
annotate mcabber/mcabber/pgp.c @ 2215:ba1a770dd632
Fix changeset 0c78d31c753d
If encryption is not required, send the original message.
author | Mikael Berthe <mikael@lilotux.net> |
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date | Thu, 05 Nov 2015 20:54:22 +0100 |
parents | 778280b01bcb |
children | 90c25a29fb35 |
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 "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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104 gpg.enabled = 1; |
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105 return 0; |
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106 } |
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107 |
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108 // gpg_is_version1() |
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109 // Return TRUE if the GnuPG OpenPGP engine version is 1.x |
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110 int gpg_is_version1(void) |
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111 { |
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112 return gpg.version1; |
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113 } |
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114 |
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115 // gpg_terminate() |
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116 // Destroy data and free memory. |
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117 void gpg_terminate(void) |
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118 { |
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119 gpg.enabled = 0; |
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120 gpg_set_passphrase(NULL); |
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121 gpg_set_private_key(NULL); |
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122 } |
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123 |
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124 // gpg_set_passphrase(passphrase) |
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125 // Set the current passphrase (use NULL to erase it). |
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126 void gpg_set_passphrase(const char *passphrase) |
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127 { |
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128 // Remove current passphrase |
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129 if (gpg.passphrase) { |
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130 ssize_t len = strlen(gpg.passphrase); |
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131 memset(gpg.passphrase, 0, len); |
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132 munlock(gpg.passphrase, len); |
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133 g_free(gpg.passphrase); |
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134 } |
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135 if (passphrase) { |
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136 gpg.passphrase = g_strdup(passphrase); |
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137 mlock(gpg.passphrase, strlen(gpg.passphrase)); |
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138 } else { |
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139 gpg.passphrase = NULL; |
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140 } |
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141 } |
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142 |
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143 // gpg_set_private_key(keyid) |
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144 // Set the current private key id (use NULL to unset it). |
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145 void gpg_set_private_key(const char *priv_keyid) |
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146 { |
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147 g_free(gpg.private_key); |
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148 if (priv_keyid) |
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149 gpg.private_key = g_strdup(priv_keyid); |
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150 else |
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151 gpg.private_key = NULL; |
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152 } |
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153 |
2188
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154 // gpg_get_private_key_id() |
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155 // Return the current private key id (static string). |
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156 const char *gpg_get_private_key_id(void) |
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157 { |
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158 return gpg.private_key; |
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159 } |
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160 |
1041
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161 // strip_header_footer(data) |
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162 // Remove PGP header & footer from data. |
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163 // Return a new string, or NULL. |
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164 // The string must be freed by the caller with g_free() when no longer needed. |
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165 static char *strip_header_footer(const char *data) |
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166 { |
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167 char *p, *q; |
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168 |
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169 if (!data) |
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170 return NULL; |
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171 |
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172 // p: beginning of real data |
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173 // q: end of real data |
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174 |
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175 // Strip header (to the first empty line) |
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176 p = strstr(data, "\n\n"); |
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177 if (!p) |
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178 return g_strdup(data); |
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179 |
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180 // Strip footer |
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181 // We want to remove the last lines, until the line beginning with a '-' |
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182 p += 2; |
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183 for (q = p ; *q; q++) ; |
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184 // (q is at the end of data now) |
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185 for (q--; q > p && (*q != '\n' || *(q+1) != '-'); q--) ; |
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186 |
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187 if (q <= p) |
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188 return NULL; // Shouldn't happen... |
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189 |
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190 return g_strndup(p, q-p); |
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191 } |
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192 |
1598 | 193 // GCC ignores casts to void, thus we need to hack around that |
194 static inline void ignore(void*x) {} | |
195 | |
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196 // passphrase_cb() |
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197 // GPGME passphrase callback function. |
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198 static gpgme_error_t passphrase_cb(void *hook, const char *uid_hint, |
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199 const char *passphrase_info, int prev_was_bad, int fd) |
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200 { |
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201 ssize_t len; |
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202 |
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203 // Abort if we do not have the password. |
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204 if (!gpg.passphrase) { |
1598 | 205 ignore((void*)write(fd, "\n", 1)); // We have an error anyway, thus it does |
206 // not matter if we fail again. | |
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207 return gpg_error(GPG_ERR_CANCELED); |
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208 } |
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209 |
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210 // Write the passphrase to the file descriptor. |
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211 len = strlen(gpg.passphrase); |
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212 if (write(fd, gpg.passphrase, len) != len) |
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213 return gpg_error(GPG_ERR_CANCELED); |
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214 if (write(fd, "\n", 1) != 1) |
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215 return gpg_error(GPG_ERR_CANCELED); |
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216 |
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217 return 0; // Success |
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218 } |
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219 |
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220 // gpg_verify(gpg_data, text, *sigsum) |
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221 // Verify that gpg_data is a correct signature for text. |
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222 // Return the key id (or fingerprint), and set *sigsum to |
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223 // the gpgme signature summary value. |
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224 // The returned string must be freed with g_free() after use. |
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225 char *gpg_verify(const char *gpg_data, const char *text, |
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226 gpgme_sigsum_t *sigsum) |
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227 { |
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228 gpgme_ctx_t ctx; |
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229 gpgme_data_t data_sign, data_text; |
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230 char *data; |
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231 char *verified_key = NULL; |
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232 gpgme_key_t key; |
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233 gpgme_error_t err; |
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234 const char prefix[] = "-----BEGIN PGP SIGNATURE-----\n\n"; |
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235 const char suffix[] = "\n-----END PGP SIGNATURE-----\n"; |
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236 |
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237 // Reset the summary. |
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238 *sigsum = 0; |
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239 |
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240 if (!gpg.enabled) |
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241 return NULL; |
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242 |
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243 err = gpgme_new(&ctx); |
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244 if (err) { |
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245 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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246 "GPGME error: %s", gpgme_strerror(err)); |
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247 return NULL; |
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248 } |
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249 |
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250 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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251 |
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252 // Surround the given data with the prefix & suffix |
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253 data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data)); |
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254 strcpy(data, prefix); |
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255 strcat(data, gpg_data); |
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256 strcat(data, suffix); |
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257 |
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258 err = gpgme_data_new_from_mem(&data_sign, data, strlen(data), 0); |
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259 if (!err) { |
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260 err = gpgme_data_new_from_mem(&data_text, text, strlen(text), 0); |
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261 if (!err) { |
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262 err = gpgme_op_verify(ctx, data_sign, data_text, 0); |
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263 if (!err) { |
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264 gpgme_verify_result_t vr = gpgme_op_verify_result(ctx); |
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265 if (vr && vr->signatures) { |
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266 gpgme_signature_t s = NULL; |
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267 // check all signatures and stop if the first could be verified |
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268 for (s = vr->signatures; s && !verified_key; s = s->next) { |
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269 // Found the fingerprint. Let's try to get the key id. |
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270 if (NULL != s->fpr) { |
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271 if (!gpgme_get_key(ctx, s->fpr, &key, 0)) { |
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272 if (key) { |
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273 verified_key = g_strdup(key->subkeys->keyid); |
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274 gpgme_key_release(key); |
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275 } |
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276 } |
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277 } |
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278 *sigsum = s->summary; |
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279 // For some reason summary could be 0 when status is 0 too, |
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280 // which means the signature is valid... |
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281 if ((!*sigsum) && (!s->status)) |
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282 *sigsum = GPGME_SIGSUM_GREEN; |
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283 } |
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284 } |
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285 } |
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286 gpgme_data_release(data_text); |
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287 } |
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288 gpgme_data_release(data_sign); |
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289 } |
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290 if (err) |
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291 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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292 "GPGME verification error: %s", gpgme_strerror(err)); |
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293 gpgme_release(ctx); |
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294 g_free(data); |
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295 return verified_key; |
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296 } |
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297 |
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298 // gpg_sign(gpg_data) |
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299 // Return a signature of gpg_data (or NULL). |
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300 // The returned string must be freed with g_free() after use. |
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301 char *gpg_sign(const char *gpg_data) |
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302 { |
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303 gpgme_ctx_t ctx; |
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304 gpgme_data_t in, out; |
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305 char *signed_data = NULL; |
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306 size_t nread; |
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307 gpgme_key_t key; |
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308 gpgme_error_t err; |
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309 |
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310 if (!gpg.enabled || !gpg.private_key) |
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311 return NULL; |
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312 |
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313 err = gpgme_new(&ctx); |
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314 if (err) { |
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315 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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316 "GPGME error: %s", gpgme_strerror(err)); |
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317 return NULL; |
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318 } |
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319 |
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320 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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321 gpgme_set_textmode(ctx, 0); |
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322 gpgme_set_armor(ctx, 1); |
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323 |
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324 if (gpg.version1) { |
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325 // GPG_AGENT_INFO isn't used by GnuPG version 2+ |
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326 char *p = getenv("GPG_AGENT_INFO"); |
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327 if (!(p && strchr(p, ':'))) |
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328 gpgme_set_passphrase_cb(ctx, passphrase_cb, 0); |
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329 } |
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330 |
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331 err = gpgme_get_key(ctx, gpg.private_key, &key, 1); |
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PGP: Improve checks for missing keys
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332 if (err || !key) { |
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333 scr_LogPrint(LPRINT_LOGNORM, "GPGME error: private key not found"); |
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334 gpgme_release(ctx); |
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335 return NULL; |
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336 } |
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337 |
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338 gpgme_signers_clear(ctx); |
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339 gpgme_signers_add(ctx, key); |
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340 gpgme_key_release(key); |
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341 err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0); |
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342 if (!err) { |
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343 err = gpgme_data_new(&out); |
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344 if (!err) { |
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345 err = gpgme_op_sign(ctx, in, out, GPGME_SIG_MODE_DETACH); |
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346 if (err) { |
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347 gpgme_data_release(out); |
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348 } else { |
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349 signed_data = gpgme_data_release_and_get_mem(out, &nread); |
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350 if (signed_data) { |
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351 // We need to add a trailing NULL |
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352 char *dd = g_strndup(signed_data, nread); |
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353 free(signed_data); |
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354 signed_data = strip_header_footer(dd); |
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355 g_free(dd); |
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356 } |
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357 } |
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358 } |
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359 gpgme_data_release(in); |
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360 } |
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361 if (err && err != GPG_ERR_CANCELED) |
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362 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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363 "GPGME signature error: %s", gpgme_strerror(err)); |
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364 gpgme_release(ctx); |
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365 return signed_data; |
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366 } |
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367 |
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368 // gpg_decrypt(gpg_data) |
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369 // Return decrypted gpg_data (or NULL). |
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370 // The returned string must be freed with g_free() after use. |
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371 char *gpg_decrypt(const char *gpg_data) |
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372 { |
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373 gpgme_ctx_t ctx; |
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374 gpgme_data_t in, out; |
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375 char *data; |
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|
376 char *decrypted_data = NULL; |
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|
377 size_t nread; |
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378 gpgme_error_t err; |
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379 const char prefix[] = "-----BEGIN PGP MESSAGE-----\n\n"; |
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380 const char suffix[] = "\n-----END PGP MESSAGE-----\n"; |
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|
381 |
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382 if (!gpg.enabled) |
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383 return NULL; |
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|
384 |
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|
385 err = gpgme_new(&ctx); |
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|
386 if (err) { |
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387 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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|
388 "GPGME error: %s", gpgme_strerror(err)); |
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389 return NULL; |
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|
390 } |
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|
391 |
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392 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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|
393 |
2196
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394 if (gpg.version1) { |
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395 // GPG_AGENT_INFO isn't used by GnuPG version 2+ |
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396 char *p = getenv("GPG_AGENT_INFO"); |
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397 if (!(p && strchr(p, ':'))) |
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398 gpgme_set_passphrase_cb(ctx, passphrase_cb, 0); |
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|
399 } |
1041
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|
400 |
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changeset
|
401 // Surround the given data with the prefix & suffix |
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402 data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data)); |
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|
403 strcpy(data, prefix); |
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|
404 strcat(data, gpg_data); |
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|
405 strcat(data, suffix); |
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|
406 |
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407 err = gpgme_data_new_from_mem(&in, data, strlen(data), 0); |
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|
408 if (!err) { |
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|
409 err = gpgme_data_new(&out); |
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|
410 if (!err) { |
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|
411 err = gpgme_op_decrypt(ctx, in, out); |
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412 if (err) { |
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413 gpgme_data_release(out); |
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414 } else { |
1041
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415 decrypted_data = gpgme_data_release_and_get_mem(out, &nread); |
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|
416 if (decrypted_data) { |
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|
417 // We need to add a trailing NULL |
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418 char *dd = g_strndup(decrypted_data, nread); |
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|
419 free(decrypted_data); |
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|
420 decrypted_data = dd; |
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|
421 } |
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|
422 } |
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|
423 } |
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|
424 gpgme_data_release(in); |
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|
425 } |
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|
426 if (err && err != GPG_ERR_CANCELED) |
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|
427 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
1047
0dc104d51dce
PGP: Better error messages
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1041
diff
changeset
|
428 "GPGME decryption error: %s", gpgme_strerror(err)); |
1041
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|
429 gpgme_release(ctx); |
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|
430 g_free(data); |
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|
431 return decrypted_data; |
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|
432 } |
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|
433 |
2187
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PGP: Change gpg_encrypt() so that several encryption keys can be used
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diff
changeset
|
434 // gpg_encrypt(gpg_data, keyids[], n) |
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PGP: Change gpg_encrypt() so that several encryption keys can be used
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changeset
|
435 // Return encrypted gpg_data with the n keys from the keyids array (or NULL). |
1041
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|
436 // 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
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changeset
|
437 char *gpg_encrypt(const char *gpg_data, const char *keyids[], size_t nkeys) |
1041
d4b97a2423eb
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changeset
|
438 { |
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|
439 gpgme_ctx_t ctx; |
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|
440 gpgme_data_t in, out; |
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diff
changeset
|
441 char *encrypted_data = NULL, *edata; |
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diff
changeset
|
442 size_t nread; |
2187
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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diff
changeset
|
443 gpgme_key_t *keys; |
1041
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|
444 gpgme_error_t err; |
2187
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PGP: Change gpg_encrypt() so that several encryption keys can be used
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1811
diff
changeset
|
445 unsigned i; |
1041
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changeset
|
446 |
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changeset
|
447 if (!gpg.enabled) |
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|
448 return NULL; |
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diff
changeset
|
449 |
2187
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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1811
diff
changeset
|
450 if (!keyids || !nkeys) { |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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diff
changeset
|
451 return NULL; |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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diff
changeset
|
452 } |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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1811
diff
changeset
|
453 |
1041
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diff
changeset
|
454 err = gpgme_new(&ctx); |
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Introduce PGP utility functions
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diff
changeset
|
455 if (err) { |
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diff
changeset
|
456 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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Introduce PGP utility functions
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diff
changeset
|
457 "GPGME error: %s", gpgme_strerror(err)); |
d4b97a2423eb
Introduce PGP utility functions
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diff
changeset
|
458 return NULL; |
d4b97a2423eb
Introduce PGP utility functions
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diff
changeset
|
459 } |
d4b97a2423eb
Introduce PGP utility functions
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diff
changeset
|
460 |
d4b97a2423eb
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|
461 gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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diff
changeset
|
462 gpgme_set_textmode(ctx, 0); |
d4b97a2423eb
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diff
changeset
|
463 gpgme_set_armor(ctx, 1); |
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Introduce PGP utility functions
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diff
changeset
|
464 |
2187
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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1811
diff
changeset
|
465 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
|
466 if (!keys) { |
40ddaebeb81e
PGP: Add a memory allocation check and compilation directives
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2188
diff
changeset
|
467 gpgme_release(ctx); |
40ddaebeb81e
PGP: Add a memory allocation check and compilation directives
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2188
diff
changeset
|
468 return NULL; |
40ddaebeb81e
PGP: Add a memory allocation check and compilation directives
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parents:
2188
diff
changeset
|
469 } |
2187
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents:
1811
diff
changeset
|
470 |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents:
1811
diff
changeset
|
471 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
|
472 err = gpgme_get_key(ctx, keyids[i], &keys[i], 0); |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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diff
changeset
|
473 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
|
474 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
|
475 keyids[i]); |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
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parents:
1811
diff
changeset
|
476 // 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
|
477 // 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
|
478 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
|
479 break; |
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 } |
e3b66c8ead4f
PGP: Change gpg_encrypt() so that several encryption keys can be used
Mikael Berthe <mikael@lilotux.net>
parents:
1811
diff
changeset
|
482 |
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) { |
1041
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
484 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
|
485 if (!err) { |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
486 err = gpgme_data_new(&out); |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
487 if (!err) { |
d4b97a2423eb
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parents:
diff
changeset
|
488 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
|
489 if (err) { |
ff18feb75a6d
PGP: Add a trailing NULL after a message is PGP-encrypted
Mikael Berthe <mikael@lilotux.net>
parents:
2200
diff
changeset
|
490 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
|
491 } else { |
1041
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
492 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
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493 if (encrypted_data) { |
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494 // We need to add a trailing NULL |
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495 char *dd = g_strndup(encrypted_data, nread); |
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496 free(encrypted_data); |
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497 encrypted_data = dd; |
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498 } |
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499 } |
1041
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500 } |
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501 gpgme_data_release(in); |
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502 } |
2187
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503 |
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504 if (err && err != GPG_ERR_CANCELED) { |
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505 scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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506 "GPGME encryption error: %s", gpgme_strerror(err)); |
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507 } |
1041
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508 } |
2187
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509 |
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510 for (i = 0; keys[i]; i++) |
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511 gpgme_key_release(keys[i]); |
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512 g_free(keys); |
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513 gpgme_release(ctx); |
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514 edata = strip_header_footer(encrypted_data); |
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515 if (encrypted_data) |
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516 free(encrypted_data); |
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517 return edata; |
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518 } |
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519 |
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520 // gpg_test_passphrase() |
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521 // Test the current gpg.passphrase with gpg.private_key. |
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522 // If the test doesn't succeed, the passphrase is cleared and a non-null |
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523 // value is returned. |
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524 int gpg_test_passphrase(void) |
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525 { |
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526 char *s; |
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527 |
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528 if (!gpg.private_key) |
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529 return -1; // No private key... |
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530 |
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531 s = gpg_sign("test"); |
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532 if (s) { |
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533 free(s); |
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534 return 0; // Ok, test successful |
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535 } |
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536 // The passphrase is wrong (if provided) |
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537 gpg_set_passphrase(NULL); |
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538 return -1; |
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539 } |
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540 |
1413 | 541 int gpg_enabled(void) |
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542 { |
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543 return gpg.enabled; |
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544 } |
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545 |
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546 #else /* not HAVE_GPGME */ |
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547 |
1413 | 548 int gpg_enabled(void) |
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549 { |
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550 return 0; |
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551 } |
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552 |
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553 #endif /* HAVE_GPGME */ |
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554 |
1811 | 555 /* vim: set et cindent cinoptions=>2\:2(0 ts=2 sw=2: For Vim users... */ |