Mercurial > ~mikael > mcabber > hg
annotate mcabber/src/otr.c @ 1420:08f641e91f94
Do not use "jid" as a variable name
| author | Mikael Berthe <mikael@lilotux.net> |
|---|---|
| date | Sun, 17 Feb 2008 19:14:56 +0100 |
| parents | 07816313073b |
| children | a8b924b5474c |
| rev | line source |
|---|---|
| 1299 | 1 /* |
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2 * otr.c -- Off-The-Record Messaging for mcabber |
| 1299 | 3 * |
| 4 * Copyright (C) 2007 Frank Zschockelt <mcabber_otr@freakysoft.de> | |
| 5 * | |
| 6 * This program is free software; you can redistribute it and/or modify | |
| 7 * it under the terms of the GNU General Public License as published by | |
| 8 * the Free Software Foundation; either version 2 of the License, or (at | |
| 9 * your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program; if not, write to the Free Software | |
| 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
| 19 * USA | |
| 20 */ | |
| 21 | |
| 22 #include <config.h> | |
| 23 | |
| 24 #ifdef HAVE_LIBOTR | |
| 25 | |
| 26 #include "otr.h" | |
| 27 #include "logprint.h" | |
| 28 #include "hbuf.h" | |
| 29 #include "jab_priv.h" | |
| 30 #include "roster.h" | |
| 31 #include "utils.h" | |
|
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32 #include "screen.h" |
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33 #include "settings.h" |
| 1299 | 34 |
| 35 | |
| 36 static OtrlUserState userstate = NULL; | |
| 37 static char * account = NULL; | |
| 38 static char * keyfile = NULL; | |
| 39 static char * fprfile = NULL; | |
| 40 | |
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41 static int otr_is_enabled = FALSE; |
| 1299 | 42 |
| 43 static OtrlPolicy cb_policy (void *opdata, ConnContext *ctx); | |
| 44 static void cb_create_privkey (void *opdata, | |
| 45 const char *accountname, | |
| 46 const char *protocol); | |
| 47 static int cb_is_logged_in (void *opdata, | |
| 48 const char *accountname, | |
| 49 const char *protocol, | |
| 50 const char *recipient); | |
| 51 static void cb_inject_message (void *opdata, | |
| 52 const char *accountname, | |
| 53 const char *protocol, | |
| 54 const char *recipient, | |
| 55 const char *message); | |
| 56 static void cb_notify (void *opdata, | |
| 57 OtrlNotifyLevel level, | |
| 58 const char *accountname, | |
| 59 const char *protocol, | |
| 60 const char *username, | |
| 61 const char *title, | |
| 62 const char *primary, | |
| 63 const char *secondary); | |
| 64 static int cb_display_otr_message(void *opdata, | |
| 65 const char *accountname, | |
| 66 const char *protocol, | |
| 67 const char *username, | |
| 68 const char *msg); | |
| 69 static void cb_update_context_list(void *opdata); | |
| 70 static const char *cb_protocol_name (void *opdata, const char *protocol); | |
| 71 static void cb_protocol_name_free (void *opdata, | |
| 72 const char *protocol_name); | |
| 73 static void cb_new_fingerprint (void *opdata, OtrlUserState us, | |
| 74 const char *accountname, | |
| 75 const char *protocol, | |
| 76 const char *username, | |
| 77 unsigned char fingerprint[20]); | |
| 78 static void cb_write_fingerprints (void *opdata); | |
| 79 static void cb_gone_secure (void *opdata, ConnContext *context); | |
| 80 static void cb_gone_insecure (void *opdata, ConnContext *context); | |
| 81 static void cb_still_secure (void *opdata, ConnContext *context, | |
| 82 int is_reply); | |
| 83 static void cb_log_message (void *opdata, const char *message); | |
| 84 static int cb_max_message_size (void *opdata, ConnContext *context); | |
| 85 | |
| 86 static OtrlMessageAppOps ops = | |
| 87 { | |
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88 cb_policy, |
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89 cb_create_privkey, |
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90 cb_is_logged_in, |
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91 cb_inject_message, |
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92 cb_notify, |
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93 cb_display_otr_message, |
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94 cb_update_context_list, |
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95 cb_protocol_name, |
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96 cb_protocol_name_free, |
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97 cb_new_fingerprint, |
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98 cb_write_fingerprints, |
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99 cb_gone_secure, |
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100 cb_gone_insecure, |
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101 cb_still_secure, |
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102 cb_log_message, |
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103 cb_max_message_size, |
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104 NULL, /*account_name*/ |
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105 NULL /*account_name_free*/ |
| 1299 | 106 }; |
| 107 | |
| 108 static void otr_message_disconnect(ConnContext *ctx); | |
| 109 static ConnContext * otr_get_context(const char *buddy); | |
| 110 static void otr_startstop(const char * buddy, int start); | |
| 111 static void otr_handle_smp_tlvs(OtrlTLV * tlvs, ConnContext * ctx); | |
| 112 | |
| 1320 | 113 static char * otr_get_dir(void); |
| 1299 | 114 |
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115 void otr_init(const char *fjid) |
| 1299 | 116 { |
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117 char *root; |
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118 |
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119 otr_is_enabled = !!settings_opt_get_int("otr"); |
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120 |
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121 if (!otr_is_enabled) |
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122 return; |
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123 |
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124 OTRL_INIT; |
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125 |
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126 userstate = otrl_userstate_create (); |
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127 |
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128 root = otr_get_dir(); |
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129 account = jidtodisp(fjid); |
| 1299 | 130 keyfile = g_strdup_printf("%s%s.key", root, account); |
| 131 fprfile = g_strdup_printf("%s%s.fpr", root, account); | |
| 132 g_free(root); | |
| 133 | |
| 134 if (otrl_privkey_read(userstate, keyfile)){ | |
| 135 scr_LogPrint(LPRINT_LOGNORM, "Could not read OTR key from %s", keyfile); | |
| 136 cb_create_privkey(NULL, account, "jabber"); | |
| 137 } | |
| 138 if (otrl_privkey_read_fingerprints(userstate, fprfile, NULL, NULL)){ | |
| 139 scr_LogPrint(LPRINT_LOGNORM, "Could not read OTR fingerprints from %s", | |
| 140 fprfile); | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 void otr_terminate(void) | |
| 145 { | |
| 146 ConnContext * ctx; | |
| 147 | |
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148 if (!otr_is_enabled) |
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149 return; |
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150 |
| 1320 | 151 for (ctx = userstate->context_root; ctx; ctx = ctx->next) |
| 1299 | 152 if (ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) |
| 153 otr_message_disconnect(ctx); | |
| 154 | |
| 155 g_free(account); | |
| 156 account = NULL; | |
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157 |
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158 /* XXX This #ifdef is a quick workaround: when mcabber |
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159 * is linked to both gnutls and libotr, libgcrypt will |
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160 * segfault when we call otrl_userstate_free(). |
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161 * This is reported to be a bug in libgcrypt :-/ |
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162 * Mikael |
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163 */ |
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164 #if defined(HAVE_GNUTLS) && !defined(HAVE_OPENSSL) |
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165 if (!settings_opt_get_int("ssl")) |
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166 #endif |
| 1299 | 167 otrl_userstate_free(userstate); |
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168 |
| 1299 | 169 userstate = NULL; |
| 170 g_free(keyfile); | |
| 171 keyfile = NULL; | |
| 172 } | |
| 173 | |
| 1320 | 174 static char * otr_get_dir(void) |
| 175 { | |
| 1346 | 176 const char *configured_dir = settings_opt_get("otr_dir"); |
| 1320 | 177 |
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178 if (configured_dir && *configured_dir) { |
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179 char *xp_conf_dir; |
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180 int l; |
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181 xp_conf_dir = expand_filename(configured_dir); |
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182 // The path must be slash-terminated |
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183 l = strlen(xp_conf_dir); |
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184 if (xp_conf_dir[l-1] != '/') { |
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185 char *xp_conf_dir_tmp = xp_conf_dir; |
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186 xp_conf_dir = g_strdup_printf("%s/", xp_conf_dir_tmp); |
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187 g_free(xp_conf_dir_tmp); |
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188 } |
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189 return xp_conf_dir; |
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190 } else { |
| 1320 | 191 return expand_filename("~/.mcabber/otr/"); |
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192 } |
| 1320 | 193 } |
| 194 | |
| 1299 | 195 static ConnContext * otr_get_context(const char *buddy) |
| 196 { | |
| 197 int null = 0; | |
| 198 return otrl_context_find(userstate, buddy, account, "jabber", 1, &null, | |
| 199 NULL, NULL); | |
| 200 } | |
| 201 | |
| 202 static void otr_message_disconnect(ConnContext *ctx) | |
| 203 { | |
| 204 if (ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) | |
| 205 cb_gone_insecure(NULL, ctx); | |
| 206 otrl_message_disconnect(userstate, &ops, NULL, ctx->accountname, | |
| 207 ctx->protocol, ctx->username); | |
| 208 } | |
| 209 | |
| 210 static void otr_startstop(const char * buddy, int start) | |
| 211 { | |
| 212 char * msg = NULL; | |
| 213 ConnContext *ctx = otr_get_context(buddy); | |
| 214 | |
| 215 if (!userstate || !ctx) | |
| 216 return; | |
| 217 | |
| 218 if (start && ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) | |
| 219 otr_message_disconnect(ctx); | |
| 220 | |
| 221 if (start) { | |
| 222 OtrlPolicy policy = cb_policy(NULL, ctx); | |
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223 if (policy == plain) { |
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224 scr_LogPrint(LPRINT_LOGNORM, "The OTR policy for this user is set to" |
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225 " plain. You have to change it first."); |
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226 return; |
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227 } |
| 1299 | 228 msg = otrl_proto_default_query_msg(ctx->accountname, policy); |
| 229 cb_inject_message(NULL, ctx->accountname, ctx->protocol, ctx->username, | |
| 230 msg); | |
| 231 free (msg); | |
| 232 } | |
| 233 else | |
| 234 otr_message_disconnect(ctx); | |
| 235 } | |
| 236 | |
| 237 void otr_establish(const char *buddy) | |
| 238 { | |
| 239 otr_startstop(buddy, 1); | |
| 240 } | |
| 241 | |
| 242 void otr_disconnect(const char * buddy) | |
| 243 { | |
| 244 otr_startstop(buddy, 0); | |
| 245 } | |
| 246 | |
| 247 void otr_fingerprint(const char * buddy, const char * trust) | |
| 248 { | |
| 249 char fpr[45], *tr; | |
| 250 ConnContext *ctx = otr_get_context(buddy); | |
| 251 if (!userstate || !ctx) | |
| 252 return; | |
| 253 | |
| 254 if (!ctx->active_fingerprint || !ctx->active_fingerprint->fingerprint) { | |
| 255 scr_LogPrint(LPRINT_LOGNORM, | |
| 256 "No active fingerprint - start OTR for this buddy first."); | |
| 257 return; | |
| 258 } | |
| 259 | |
| 260 otrl_privkey_hash_to_human(fpr, ctx->active_fingerprint->fingerprint); | |
| 261 if (trust) { | |
| 262 if (strcmp(fpr, trust) == 0) | |
| 263 otrl_context_set_trust(ctx->active_fingerprint, "trust"); | |
| 264 else | |
| 265 otrl_context_set_trust(ctx->active_fingerprint, NULL); | |
| 266 } | |
| 267 | |
| 268 tr = ctx->active_fingerprint->trust; | |
| 269 scr_LogPrint(LPRINT_LOGNORM, "%s [%44s]: %s", ctx->username, fpr, | |
| 270 tr && *tr ? "trusted" : "untrusted"); | |
| 271 cb_write_fingerprints(NULL); | |
| 272 } | |
| 273 | |
| 274 static void otr_handle_smp_tlvs(OtrlTLV * tlvs, ConnContext * ctx) | |
| 275 { | |
| 276 OtrlTLV *tlv = NULL; | |
| 277 char *sbuf = NULL; | |
| 278 NextExpectedSMP nextMsg = ctx->smstate->nextExpected; | |
| 279 | |
| 280 tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP1); | |
| 281 if (tlv) { | |
| 282 if (nextMsg != OTRL_SMP_EXPECT1) | |
| 283 otr_smp_abort(ctx->username); | |
| 284 else { | |
| 285 sbuf = g_strdup_printf("OTR: Received SMP Initiation. " | |
| 286 "Answer with /otr smpr %s $secret", | |
| 287 ctx->username); | |
| 288 } | |
| 289 } | |
| 290 tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP2); | |
| 291 if (tlv) { | |
| 292 if (nextMsg != OTRL_SMP_EXPECT2) | |
| 293 otr_smp_abort(ctx->username); | |
| 294 else { | |
| 295 sbuf = g_strdup("OTR: Received SMP Response."); | |
| 296 /* If we received TLV2, we will send TLV3 and expect TLV4 */ | |
| 297 ctx->smstate->nextExpected = OTRL_SMP_EXPECT4; | |
| 298 } | |
| 299 } | |
| 300 tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP3); | |
| 301 if (tlv) { | |
| 302 if (nextMsg != OTRL_SMP_EXPECT3) | |
| 303 otr_smp_abort(ctx->username); | |
| 304 else { | |
| 305 /* If we received TLV3, we will send TLV4 | |
| 306 * We will not expect more messages, so prepare for next SMP */ | |
| 307 ctx->smstate->nextExpected = OTRL_SMP_EXPECT1; | |
| 308 /* Report result to user */ | |
| 309 if (ctx->active_fingerprint && ctx->active_fingerprint->trust && | |
| 310 *ctx->active_fingerprint->trust != '\0') | |
| 311 sbuf = g_strdup("OTR: SMP succeeded"); | |
| 312 else | |
| 313 sbuf = g_strdup("OTR: SMP failed"); | |
| 314 } | |
| 315 } | |
| 316 tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP4); | |
| 317 if (tlv) { | |
| 318 if (nextMsg != OTRL_SMP_EXPECT4) | |
| 319 otr_smp_abort(ctx->username); | |
| 320 else { | |
| 321 /* We will not expect more messages, so prepare for next SMP */ | |
| 322 ctx->smstate->nextExpected = OTRL_SMP_EXPECT1; | |
| 323 /* Report result to user */ | |
| 324 if (ctx->active_fingerprint && ctx->active_fingerprint->trust && | |
| 325 *ctx->active_fingerprint->trust != '\0') | |
| 326 sbuf = g_strdup("OTR: SMP succeeded"); | |
| 327 else | |
| 328 sbuf = g_strdup("OTR: SMP failed"); | |
| 329 } | |
| 330 } | |
| 331 tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP_ABORT); | |
| 332 if (tlv) { | |
| 333 /* The message we are waiting for will not arrive, so reset | |
| 334 * and prepare for the next SMP */ | |
| 335 sbuf = g_strdup("OTR: SMP aborted by your buddy"); | |
| 336 ctx->smstate->nextExpected = OTRL_SMP_EXPECT1; | |
| 337 } | |
| 338 | |
| 339 if (sbuf) { | |
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340 scr_WriteIncomingMessage(ctx->username, sbuf, 0, HBB_PREFIX_INFO, 0); |
| 1299 | 341 g_free(sbuf); |
| 342 } | |
| 343 } | |
| 344 | |
| 345 /* | |
| 346 * returns whether a otr_message was received | |
| 347 * sets *otr_data to NULL, when it was an internal otr message | |
| 348 */ | |
| 349 int otr_receive(char **otr_data, const char * buddy, int * free_msg) | |
| 350 { | |
| 351 int ignore_message; | |
| 352 char *newmessage = NULL; | |
| 353 OtrlTLV *tlvs = NULL; | |
| 354 OtrlTLV *tlv = NULL; | |
| 355 ConnContext * ctx; | |
| 356 | |
| 357 *free_msg = 0; | |
| 358 ignore_message = otrl_message_receiving(userstate, &ops, NULL, account, | |
| 359 "jabber", buddy, *otr_data, &newmessage, &tlvs, NULL, NULL); | |
| 360 | |
| 361 ctx = otr_get_context(buddy); | |
| 362 | |
| 363 tlv = otrl_tlv_find(tlvs, OTRL_TLV_DISCONNECTED); | |
| 364 if (tlv) { | |
| 365 /* Notify the user that the other side disconnected. */ | |
| 366 if (ctx) { | |
| 367 cb_gone_insecure(NULL, ctx); | |
| 368 otr_disconnect(buddy); | |
| 369 } | |
| 370 } | |
| 371 | |
| 372 otr_handle_smp_tlvs(tlvs, ctx); | |
| 373 | |
| 374 if (tlvs != NULL) | |
| 375 otrl_tlv_free(tlvs); | |
| 376 | |
| 377 if (ignore_message) | |
| 378 *otr_data = NULL; | |
| 379 | |
| 380 if (!ignore_message && newmessage) { | |
| 381 *free_msg = 1; | |
| 382 *otr_data = g_strdup(newmessage); | |
| 383 otrl_message_free(newmessage); | |
| 384 if (ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) | |
| 385 return 1; | |
| 386 } | |
| 387 return 0; | |
| 388 } | |
| 389 | |
| 390 int otr_send(char **msg, const char *buddy) | |
| 391 { | |
| 392 gcry_error_t err; | |
| 393 char *newmessage = NULL; | |
| 394 ConnContext * ctx = otr_get_context(buddy); | |
| 395 | |
| 396 err = otrl_message_sending(userstate, &ops, NULL, account, "jabber", buddy, | |
| 397 *msg, NULL, &newmessage, NULL, NULL); | |
| 398 | |
| 399 if (err) | |
| 400 *msg = NULL; /*something went wrong, don't send the plain-message! */ | |
| 401 | |
| 402 if (!err && newmessage) { | |
| 403 *msg = g_strdup(newmessage); | |
| 404 otrl_message_free(newmessage); | |
| 405 if (cb_policy(NULL, ctx) & OTRL_POLICY_REQUIRE_ENCRYPTION || | |
| 406 ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) | |
| 407 return 1; | |
| 408 } | |
| 409 return 0; | |
| 410 } | |
| 411 | |
| 412 /* Prints OTR connection state */ | |
| 413 void otr_print_info(const char * buddy) | |
| 414 { | |
| 415 const char *state, *auth, *policy; | |
| 416 ConnContext * ctx = otr_get_context(buddy); | |
| 417 OtrlPolicy p = cb_policy (ctx->app_data, ctx); | |
| 418 | |
| 419 if (!userstate || !ctx) | |
| 420 return; | |
| 421 | |
| 422 switch (ctx->msgstate) { | |
| 423 case OTRL_MSGSTATE_PLAINTEXT: state = "plaintext"; break; | |
| 424 case OTRL_MSGSTATE_ENCRYPTED: | |
| 425 switch (ctx->protocol_version) { | |
| 426 case 1: state = "encrypted V1"; break; | |
| 427 case 2: state = "encrypted V2"; break; | |
| 428 default:state = "encrypted"; | |
| 429 }; | |
| 430 break; | |
| 431 case OTRL_MSGSTATE_FINISHED: state = "finished"; break; | |
| 432 default: state = "unknown state"; | |
| 433 } | |
| 434 switch (ctx->auth.authstate) { | |
| 435 case OTRL_AUTHSTATE_NONE: | |
| 436 switch (ctx->otr_offer) { | |
| 437 case OFFER_NOT: auth = "no offer sent"; break; | |
| 438 case OFFER_SENT: auth = "offer sent"; break; | |
| 439 case OFFER_ACCEPTED: auth = "offer accepted"; break; | |
| 440 case OFFER_REJECTED: auth = "offer rejected"; break; | |
| 441 default: auth = "unknown auth"; | |
| 442 } | |
| 443 break; | |
| 444 case OTRL_AUTHSTATE_AWAITING_DHKEY: | |
| 445 auth = "awaiting D-H key"; break; | |
| 446 case OTRL_AUTHSTATE_AWAITING_REVEALSIG: | |
| 447 auth = "awaiting reveal signature"; break; | |
| 448 case OTRL_AUTHSTATE_AWAITING_SIG: | |
| 449 auth = "awaiting signature"; break; | |
| 450 case OTRL_AUTHSTATE_V1_SETUP: | |
| 451 auth = "v1 setup"; break; | |
| 452 default: | |
| 453 auth = "unknown auth"; | |
| 454 } | |
| 455 if (p == OTRL_POLICY_NEVER) | |
| 456 policy = "plain"; | |
|
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457 else if (p == (OTRL_POLICY_OPPORTUNISTIC & ~OTRL_POLICY_ALLOW_V1)) |
| 1299 | 458 policy = "opportunistic"; |
|
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459 else if (p == (OTRL_POLICY_MANUAL & ~OTRL_POLICY_ALLOW_V1)) |
| 1299 | 460 policy = "manual"; |
| 461 else if (p == (OTRL_POLICY_ALWAYS & ~OTRL_POLICY_ALLOW_V1)) | |
| 462 policy = "always"; | |
| 463 else | |
| 464 policy = "unknown"; | |
| 465 | |
| 466 scr_LogPrint(LPRINT_LOGNORM, "%s: %s (%s) [%s]", | |
| 467 ctx->username, state, auth, policy); | |
| 468 } | |
| 469 | |
| 470 static ConnContext * otr_context_encrypted(const char * buddy) | |
| 471 { | |
| 472 ConnContext * ctx = otr_get_context(buddy); | |
| 473 | |
| 474 if (!userstate || !ctx || ctx->msgstate != OTRL_MSGSTATE_ENCRYPTED){ | |
| 475 scr_LogPrint(LPRINT_LOGNORM, | |
| 476 "You have to start an OTR channel with %s before you can " | |
| 477 "use SMP.", buddy); | |
| 478 return NULL; | |
| 479 } | |
| 480 | |
| 481 return ctx; | |
| 482 } | |
| 483 | |
| 484 void otr_smp_query(const char * buddy, const char * secret) | |
| 485 { | |
| 486 ConnContext * ctx = otr_context_encrypted(buddy); | |
| 487 | |
| 488 if (!secret) { | |
| 489 scr_LogPrint(LPRINT_LOGNORM, | |
| 490 "Using SMP without a secret isn't a good idea."); | |
| 491 return; | |
| 492 } | |
| 493 | |
| 494 if (ctx) { | |
|
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495 otrl_message_initiate_smp(userstate, &ops, NULL, ctx, |
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496 (const unsigned char *)secret, |
| 1299 | 497 strlen(secret)); |
| 498 scr_WriteIncomingMessage(ctx->username, | |
| 499 "OTR: Socialist Millionaires' Protocol " | |
|
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500 "initiated.", 0, HBB_PREFIX_INFO, 0); |
| 1299 | 501 } |
| 502 } | |
| 503 | |
| 504 void otr_smp_respond(const char * buddy, const char * secret) | |
| 505 { | |
| 506 ConnContext * ctx = otr_context_encrypted(buddy); | |
| 507 | |
| 508 if (!secret) { | |
| 509 scr_LogPrint(LPRINT_LOGNORM, | |
| 510 "Using SMP without a secret isn't a good idea."); | |
| 511 return; | |
| 512 } | |
| 513 | |
| 514 if (ctx) { | |
| 515 if (!ctx->smstate->secret) { | |
| 516 scr_LogPrint(LPRINT_LOGNORM, | |
| 517 "Don't call smpr before you haven't received an SMP " | |
| 518 "Initiation!"); | |
| 519 return; | |
| 520 } | |
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521 otrl_message_respond_smp(userstate, &ops, NULL, ctx, |
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522 (const unsigned char *)secret, |
| 1299 | 523 strlen(secret)); |
| 524 scr_WriteIncomingMessage(ctx->username, | |
| 525 "OTR: Socialist Millionaires' Protocol: " | |
|
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526 "response sent", 0, HBB_PREFIX_INFO, 0); |
| 1299 | 527 } |
| 528 } | |
| 529 | |
| 530 void otr_smp_abort(const char * buddy) | |
| 531 { | |
| 532 ConnContext * ctx = otr_context_encrypted(buddy); | |
| 533 | |
| 534 if (ctx) { | |
| 535 otrl_message_abort_smp(userstate, &ops, NULL, ctx); | |
| 536 scr_WriteIncomingMessage(ctx->username, | |
| 537 "OTR: Socialist Millionaires' Protocol aborted.", | |
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538 0, HBB_PREFIX_INFO, 0); |
| 1299 | 539 } |
| 540 } | |
| 541 | |
| 542 void otr_key(void) | |
| 543 { | |
| 544 OtrlPrivKey * key; | |
| 545 char readable[45] = ""; | |
| 546 | |
| 547 if(!userstate) | |
| 548 return; | |
| 549 for (key = userstate->privkey_root; key; key = key->next) { | |
| 550 otrl_privkey_fingerprint(userstate, readable, key->accountname, | |
| 551 key->protocol); | |
| 552 scr_LogPrint(LPRINT_LOGNORM, "%s: %s", key->accountname, readable); | |
| 553 } | |
| 554 } | |
| 555 | |
| 556 /* Return the OTR policy for the given context. */ | |
| 557 static OtrlPolicy cb_policy(void *opdata, ConnContext *ctx) | |
| 558 { | |
| 559 enum otr_policy p = settings_otr_getpolicy(NULL); | |
| 560 | |
| 561 if(ctx) | |
| 562 if(settings_otr_getpolicy(ctx->username)) | |
| 563 p = settings_otr_getpolicy(ctx->username); | |
| 564 | |
| 565 switch (p) { | |
| 566 case plain: | |
| 567 return OTRL_POLICY_NEVER; | |
| 568 case opportunistic: | |
| 569 return OTRL_POLICY_OPPORTUNISTIC & ~OTRL_POLICY_ALLOW_V1; | |
| 570 case manual: | |
| 571 return OTRL_POLICY_MANUAL & ~OTRL_POLICY_ALLOW_V1; | |
| 572 case always: | |
| 573 return OTRL_POLICY_ALWAYS & ~OTRL_POLICY_ALLOW_V1; | |
| 574 } | |
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575 |
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576 return OTRL_POLICY_MANUAL & ~OTRL_POLICY_ALLOW_V1; |
| 1299 | 577 } |
| 578 | |
| 579 /* Create a private key for the given accountname/protocol if | |
| 580 * desired. */ | |
| 581 static void cb_create_privkey(void *opdata, const char *accountname, | |
| 582 const char *protocol) | |
| 583 { | |
| 584 gcry_error_t e; | |
| 1320 | 585 char * root; |
| 1299 | 586 |
| 587 scr_LogPrint(LPRINT_LOGNORM, | |
| 588 "Generating new OTR key for %s. This may take a while...", | |
| 589 accountname); | |
| 590 scr_DoUpdate(); | |
| 591 | |
| 592 e = otrl_privkey_generate(userstate, keyfile, accountname, protocol); | |
| 593 | |
| 1320 | 594 if (e) { |
| 595 root = otr_get_dir(); | |
| 596 scr_LogPrint(LPRINT_LOGNORM, "OTR key generation failed! Please mkdir " | |
| 597 "%s if you want to use otr encryption.", root); | |
| 598 g_free(root); | |
| 599 } | |
| 1299 | 600 else |
| 601 scr_LogPrint(LPRINT_LOGNORM, "OTR key generated."); | |
| 602 } | |
| 603 | |
| 604 /* Report whether you think the given user is online. Return 1 if | |
| 605 * you think he is, 0 if you think he isn't, -1 if you're not sure. | |
| 606 * If you return 1, messages such as heartbeats or other | |
| 607 * notifications may be sent to the user, which could result in "not | |
| 608 * logged in" errors if you're wrong. */ | |
| 609 static int cb_is_logged_in(void *opdata, const char *accountname, | |
| 610 const char *protocol, const char *recipient) | |
| 611 { | |
| 1346 | 612 int ret = (roster_getstatus(recipient, NULL) != offline); |
| 1299 | 613 return ret; |
| 614 } | |
| 615 | |
| 616 /* Send the given IM to the given recipient from the given | |
| 617 * accountname/protocol. */ | |
| 618 static void cb_inject_message(void *opdata, const char *accountname, | |
| 619 const char *protocol, const char *recipient, | |
| 620 const char *message) | |
| 621 { | |
| 622 char * id = g_strdup("otrinject"); | |
| 1343 | 623 if (roster_gettype(recipient) == ROSTER_TYPE_USER) |
| 624 jb_send_msg(recipient, message, ROSTER_TYPE_USER, "", id, NULL, NULL); | |
| 1299 | 625 g_free(id); |
| 626 } | |
| 627 | |
| 628 /* Display a notification message for a particular | |
| 629 * accountname / protocol / username conversation. */ | |
| 630 static void cb_notify(void *opdata, OtrlNotifyLevel level, | |
| 631 const char *accountname, const char *protocol, | |
| 632 const char *username, const char *title, | |
| 633 const char *primary, const char *secondary) | |
| 634 { | |
| 635 char * type; | |
| 636 char *sbuf = NULL; | |
| 637 switch (level) { | |
| 638 case OTRL_NOTIFY_ERROR: type = "error"; break; | |
| 639 case OTRL_NOTIFY_WARNING: type = "warning"; break; | |
| 640 case OTRL_NOTIFY_INFO: type = "info"; break; | |
|
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641 default: type = "unknown"; |
| 1299 | 642 } |
| 643 sbuf = g_strdup_printf("OTR %s:%s\n%s\n%s",type,title, primary, secondary); | |
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644 scr_WriteIncomingMessage(username, sbuf, 0, HBB_PREFIX_INFO, 0); |
| 1299 | 645 g_free(sbuf); |
| 646 } | |
| 647 | |
| 648 /* Display an OTR control message for a particular | |
| 649 * accountname / protocol / username conversation. Return 0 if you are able | |
| 650 * to successfully display it. If you return non-0 (or if this | |
| 651 * function is NULL), the control message will be displayed inline, | |
| 652 * as a received message, or else by using the above notify() | |
| 653 * callback. */ | |
| 654 static int cb_display_otr_message(void *opdata, const char *accountname, | |
| 655 const char *protocol, const char *username, | |
| 656 const char *msg) | |
| 657 { | |
|
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658 scr_WriteIncomingMessage(username, msg, 0, HBB_PREFIX_INFO, 0); |
| 1299 | 659 return 0; |
| 660 } | |
| 661 | |
| 662 /* When the list of ConnContexts changes (including a change in | |
| 663 * state), this is called so the UI can be updated. */ | |
| 664 static void cb_update_context_list(void *opdata) | |
| 665 { | |
| 666 /*maybe introduce new status characters for mcabber, | |
| 667 * then use this function (?!)*/ | |
| 668 } | |
| 669 | |
| 670 /* Return a newly allocated string containing a human-friendly name | |
| 671 * for the given protocol id */ | |
| 672 static const char *cb_protocol_name(void *opdata, const char *protocol) | |
| 673 { | |
| 674 return protocol; | |
| 675 } | |
| 676 | |
| 677 /* Deallocate a string allocated by protocol_name */ | |
| 678 static void cb_protocol_name_free (void *opdata, const char *protocol_name) | |
| 679 { | |
| 680 /* We didn't allocated memory, so we don't have to free anything :p */ | |
| 681 } | |
| 682 | |
| 683 /* A new fingerprint for the given user has been received. */ | |
| 684 static void cb_new_fingerprint(void *opdata, OtrlUserState us, | |
| 685 const char *accountname, const char *protocol, | |
| 686 const char *username, | |
| 687 unsigned char fingerprint[20]) | |
| 688 { | |
| 689 char *sbuf = NULL; | |
| 690 char readable[45]; | |
| 691 | |
| 692 otrl_privkey_hash_to_human(readable, fingerprint); | |
| 693 sbuf = g_strdup_printf("OTR: new fingerprint: %s", readable); | |
|
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694 scr_WriteIncomingMessage(username, sbuf, 0, HBB_PREFIX_INFO, 0); |
| 1299 | 695 g_free(sbuf); |
| 696 } | |
| 697 | |
| 698 /* The list of known fingerprints has changed. Write them to disk. */ | |
| 699 static void cb_write_fingerprints(void *opdata) | |
| 700 { | |
| 701 otrl_privkey_write_fingerprints(userstate, fprfile); | |
| 702 } | |
| 703 | |
| 704 /* A ConnContext has entered a secure state. */ | |
| 705 static void cb_gone_secure(void *opdata, ConnContext *context) | |
| 706 { | |
| 707 scr_WriteIncomingMessage(context->username, "OTR: channel established", 0, | |
|
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708 HBB_PREFIX_INFO, 0); |
| 1299 | 709 } |
| 710 | |
| 711 /* A ConnContext has left a secure state. */ | |
| 712 static void cb_gone_insecure(void *opdata, ConnContext *context) | |
| 713 { | |
| 714 scr_WriteIncomingMessage(context->username, "OTR: channel closed", 0, | |
|
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715 HBB_PREFIX_INFO, 0); |
| 1299 | 716 } |
| 717 | |
| 718 /* We have completed an authentication, using the D-H keys we | |
| 719 * already knew. is_reply indicates whether we initiated the AKE. */ | |
| 720 static void cb_still_secure(void *opdata, ConnContext *context, int is_reply) | |
| 721 { | |
| 722 scr_WriteIncomingMessage(context->username, "OTR: channel reestablished", 0, | |
|
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723 HBB_PREFIX_INFO, 0); |
| 1299 | 724 } |
| 725 | |
| 726 /* Log a message. The passed message will end in "\n". */ | |
| 727 static void cb_log_message(void *opdata, const char *message) | |
| 728 { | |
| 729 scr_LogPrint(LPRINT_DEBUG, "OTR: %s", message); | |
| 730 } | |
| 731 | |
| 732 /* Find the maximum message size supported by this protocol. */ | |
| 733 static int cb_max_message_size(void *opdata, ConnContext *context) | |
| 734 { | |
| 735 return 8192; | |
| 736 } | |
| 737 | |
|
1347
07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
738 int otr_enabled(void) |
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07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
739 { |
|
07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
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740 return otr_is_enabled; |
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07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
741 } |
|
07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
742 |
|
07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
743 #else /* !HAVE_LIBOTR */ |
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07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
744 |
|
07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
745 int otr_enabled(void) |
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07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
746 { |
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07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
747 return FALSE; |
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07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
748 } |
|
07816313073b
Add an option 'otr' to enable OTR support in the configuration file
Mikael Berthe <mikael@lilotux.net>
parents:
1346
diff
changeset
|
749 |
| 1299 | 750 #endif /* HAVE_LIBOTR */ |
| 751 /* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */ |