comparison: libpurple/plugins/ssl/ssl-nss.c
libpurple/plugins/ssl/ssl-nss.c
- branch
- cpw.khc.msnp14
- changeset 20481
- 65485e2ed8a3
- parent 20472
- 6a6d2ef151e6
- parent 20478
- 46933dc62880
equal
deleted
inserted
replaced
| 20480:df9df972434f | 20481:65485e2ed8a3 |
|---|---|
| 1 /** | |
| 2 * @file ssl-nss.c Mozilla NSS SSL plugin. | |
| 3 * | |
| 4 * purple | |
| 5 * | |
| 6 * Copyright (C) 2003 Christian Hammond <chipx86@gnupdate.org> | |
| 7 * | |
| 8 * This program is free software; you can redistribute it and/or modify | |
| 9 * it under the terms of the GNU General Public License as published by | |
| 10 * the Free Software Foundation; either version 2 of the License, or | |
| 11 * (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, | |
| 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 * GNU General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU General Public License | |
| 19 * along with this program; if not, write to the Free Software | |
| 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 21 */ | |
| 22 #include "internal.h" | |
| 23 #include "debug.h" | |
| 24 #include "plugin.h" | |
| 25 #include "sslconn.h" | |
| 26 #include "version.h" | |
| 27 | |
| 28 #define SSL_NSS_PLUGIN_ID "ssl-nss" | |
| 29 | |
| 30 #ifdef HAVE_NSS | |
| 31 | |
| 32 #undef HAVE_LONG_LONG /* Make Mozilla less angry. If angry, Mozilla SMASH! */ | |
| 33 | |
| 34 #include <nspr.h> | |
| 35 #include <private/pprio.h> | |
| 36 #include <nss.h> | |
| 37 #include <pk11func.h> | |
| 38 #include <prio.h> | |
| 39 #include <secerr.h> | |
| 40 #include <secmod.h> | |
| 41 #include <ssl.h> | |
| 42 #include <sslerr.h> | |
| 43 #include <sslproto.h> | |
| 44 | |
| 45 typedef struct | |
| 46 { | |
| 47 PRFileDesc *fd; | |
| 48 PRFileDesc *in; | |
| 49 guint handshake_handler; | |
| 50 | |
| 51 } PurpleSslNssData; | |
| 52 | |
| 53 #define PURPLE_SSL_NSS_DATA(gsc) ((PurpleSslNssData *)gsc->private_data) | |
| 54 | |
| 55 static const PRIOMethods *_nss_methods = NULL; | |
| 56 static PRDescIdentity _identity; | |
| 57 | |
| 58 /* Thank you, Evolution */ | |
| 59 static void | |
| 60 set_errno(int code) | |
| 61 { | |
| 62 /* FIXME: this should handle more. */ | |
| 63 switch (code) { | |
| 64 case PR_INVALID_ARGUMENT_ERROR: | |
| 65 errno = EINVAL; | |
| 66 break; | |
| 67 case PR_PENDING_INTERRUPT_ERROR: | |
| 68 errno = EINTR; | |
| 69 break; | |
| 70 case PR_IO_PENDING_ERROR: | |
| 71 errno = EAGAIN; | |
| 72 break; | |
| 73 case PR_WOULD_BLOCK_ERROR: | |
| 74 errno = EAGAIN; | |
| 75 /*errno = EWOULDBLOCK; */ | |
| 76 break; | |
| 77 case PR_IN_PROGRESS_ERROR: | |
| 78 errno = EINPROGRESS; | |
| 79 break; | |
| 80 case PR_ALREADY_INITIATED_ERROR: | |
| 81 errno = EALREADY; | |
| 82 break; | |
| 83 case PR_NETWORK_UNREACHABLE_ERROR: | |
| 84 errno = EHOSTUNREACH; | |
| 85 break; | |
| 86 case PR_CONNECT_REFUSED_ERROR: | |
| 87 errno = ECONNREFUSED; | |
| 88 break; | |
| 89 case PR_CONNECT_TIMEOUT_ERROR: | |
| 90 case PR_IO_TIMEOUT_ERROR: | |
| 91 errno = ETIMEDOUT; | |
| 92 break; | |
| 93 case PR_NOT_CONNECTED_ERROR: | |
| 94 errno = ENOTCONN; | |
| 95 break; | |
| 96 case PR_CONNECT_RESET_ERROR: | |
| 97 errno = ECONNRESET; | |
| 98 break; | |
| 99 case PR_IO_ERROR: | |
| 100 default: | |
| 101 errno = EIO; | |
| 102 break; | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 static void | |
| 107 ssl_nss_init_nss(void) | |
| 108 { | |
| 109 char *lib; | |
| 110 PR_Init(PR_SYSTEM_THREAD, PR_PRIORITY_NORMAL, 1); | |
| 111 NSS_NoDB_Init(NULL); | |
| 112 | |
| 113 /* TODO: Fix this so autoconf does the work trying to find this lib. */ | |
| 114 #ifndef _WIN32 | |
| 115 lib = g_strdup(LIBDIR "/libnssckbi.so"); | |
| 116 #else | |
| 117 lib = g_strdup("nssckbi.dll"); | |
| 118 #endif | |
| 119 SECMOD_AddNewModule("Builtins", lib, 0, 0); | |
| 120 g_free(lib); | |
| 121 NSS_SetDomesticPolicy(); | |
| 122 | |
| 123 _identity = PR_GetUniqueIdentity("Purple"); | |
| 124 _nss_methods = PR_GetDefaultIOMethods(); | |
| 125 } | |
| 126 | |
| 127 static SECStatus | |
| 128 ssl_auth_cert(void *arg, PRFileDesc *socket, PRBool checksig, | |
| 129 PRBool is_server) | |
| 130 { | |
| 131 return SECSuccess; | |
| 132 | |
| 133 #if 0 | |
| 134 CERTCertificate *cert; | |
| 135 void *pinArg; | |
| 136 SECStatus status; | |
| 137 | |
| 138 cert = SSL_PeerCertificate(socket); | |
| 139 pinArg = SSL_RevealPinArg(socket); | |
| 140 | |
| 141 status = CERT_VerifyCertNow((CERTCertDBHandle *)arg, cert, checksig, | |
| 142 certUsageSSLClient, pinArg); | |
| 143 | |
| 144 if (status != SECSuccess) { | |
| 145 purple_debug_error("nss", "CERT_VerifyCertNow failed\n"); | |
| 146 CERT_DestroyCertificate(cert); | |
| 147 return status; | |
| 148 } | |
| 149 | |
| 150 CERT_DestroyCertificate(cert); | |
| 151 return SECSuccess; | |
| 152 #endif | |
| 153 } | |
| 154 | |
| 155 static SECStatus | |
| 156 ssl_bad_cert(void *arg, PRFileDesc *socket) | |
| 157 { | |
| 158 SECStatus status = SECFailure; | |
| 159 PRErrorCode err; | |
| 160 | |
| 161 if (arg == NULL) | |
| 162 return status; | |
| 163 | |
| 164 *(PRErrorCode *)arg = err = PORT_GetError(); | |
| 165 | |
| 166 switch (err) | |
| 167 { | |
| 168 case SEC_ERROR_INVALID_AVA: | |
| 169 case SEC_ERROR_INVALID_TIME: | |
| 170 case SEC_ERROR_BAD_SIGNATURE: | |
| 171 case SEC_ERROR_EXPIRED_CERTIFICATE: | |
| 172 case SEC_ERROR_UNKNOWN_ISSUER: | |
| 173 case SEC_ERROR_UNTRUSTED_CERT: | |
| 174 case SEC_ERROR_CERT_VALID: | |
| 175 case SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE: | |
| 176 case SEC_ERROR_CRL_EXPIRED: | |
| 177 case SEC_ERROR_CRL_BAD_SIGNATURE: | |
| 178 case SEC_ERROR_EXTENSION_VALUE_INVALID: | |
| 179 case SEC_ERROR_CA_CERT_INVALID: | |
| 180 case SEC_ERROR_CERT_USAGES_INVALID: | |
| 181 case SEC_ERROR_UNKNOWN_CRITICAL_EXTENSION: | |
| 182 status = SECSuccess; | |
| 183 break; | |
| 184 | |
| 185 default: | |
| 186 status = SECFailure; | |
| 187 break; | |
| 188 } | |
| 189 | |
| 190 purple_debug_error("nss", "Bad certificate: %d\n", err); | |
| 191 | |
| 192 return status; | |
| 193 } | |
| 194 | |
| 195 static gboolean | |
| 196 ssl_nss_init(void) | |
| 197 { | |
| 198 return TRUE; | |
| 199 } | |
| 200 | |
| 201 static void | |
| 202 ssl_nss_uninit(void) | |
| 203 { | |
| 204 PR_Cleanup(); | |
| 205 | |
| 206 _nss_methods = NULL; | |
| 207 } | |
| 208 | |
| 209 static void | |
| 210 ssl_nss_handshake_cb(gpointer data, int fd, PurpleInputCondition cond) | |
| 211 { | |
| 212 PurpleSslConnection *gsc = (PurpleSslConnection *)data; | |
| 213 PurpleSslNssData *nss_data = gsc->private_data; | |
| 214 | |
| 215 /* I don't think this the best way to do this... | |
| 216 * It seems to work because it'll eventually use the cached value | |
| 217 */ | |
| 218 if(SSL_ForceHandshake(nss_data->in) != SECSuccess) { | |
| 219 set_errno(PR_GetError()); | |
| 220 if (errno == EAGAIN || errno == EWOULDBLOCK) | |
| 221 return; | |
| 222 | |
| 223 purple_debug_error("nss", "Handshake failed %d\n", PR_GetError()); | |
| 224 | |
| 225 if (gsc->error_cb != NULL) | |
| 226 gsc->error_cb(gsc, PURPLE_SSL_HANDSHAKE_FAILED, gsc->connect_cb_data); | |
| 227 | |
| 228 purple_ssl_close(gsc); | |
| 229 | |
| 230 return; | |
| 231 } | |
| 232 | |
| 233 purple_input_remove(nss_data->handshake_handler); | |
| 234 nss_data->handshake_handler = 0; | |
| 235 | |
| 236 gsc->connect_cb(gsc->connect_cb_data, gsc, cond); | |
| 237 } | |
| 238 | |
| 239 static void | |
| 240 ssl_nss_connect(PurpleSslConnection *gsc) | |
| 241 { | |
| 242 PurpleSslNssData *nss_data = g_new0(PurpleSslNssData, 1); | |
| 243 PRSocketOptionData socket_opt; | |
| 244 | |
| 245 gsc->private_data = nss_data; | |
| 246 | |
| 247 nss_data->fd = PR_ImportTCPSocket(gsc->fd); | |
| 248 | |
| 249 if (nss_data->fd == NULL) | |
| 250 { | |
| 251 purple_debug_error("nss", "nss_data->fd == NULL!\n"); | |
| 252 | |
| 253 if (gsc->error_cb != NULL) | |
| 254 gsc->error_cb(gsc, PURPLE_SSL_CONNECT_FAILED, gsc->connect_cb_data); | |
| 255 | |
| 256 purple_ssl_close((PurpleSslConnection *)gsc); | |
| 257 | |
| 258 return; | |
| 259 } | |
| 260 | |
| 261 socket_opt.option = PR_SockOpt_Nonblocking; | |
| 262 socket_opt.value.non_blocking = PR_TRUE; | |
| 263 | |
| 264 if (PR_SetSocketOption(nss_data->fd, &socket_opt) != PR_SUCCESS) | |
| 265 purple_debug_warning("nss", "unable to set socket into non-blocking mode: %d\n", PR_GetError()); | |
| 266 | |
| 267 nss_data->in = SSL_ImportFD(NULL, nss_data->fd); | |
| 268 | |
| 269 if (nss_data->in == NULL) | |
| 270 { | |
| 271 purple_debug_error("nss", "nss_data->in == NUL!\n"); | |
| 272 | |
| 273 if (gsc->error_cb != NULL) | |
| 274 gsc->error_cb(gsc, PURPLE_SSL_CONNECT_FAILED, gsc->connect_cb_data); | |
| 275 | |
| 276 purple_ssl_close((PurpleSslConnection *)gsc); | |
| 277 | |
| 278 return; | |
| 279 } | |
| 280 | |
| 281 SSL_OptionSet(nss_data->in, SSL_SECURITY, PR_TRUE); | |
| 282 SSL_OptionSet(nss_data->in, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE); | |
| 283 | |
| 284 SSL_AuthCertificateHook(nss_data->in, | |
| 285 (SSLAuthCertificate)ssl_auth_cert, | |
| 286 (void *)CERT_GetDefaultCertDB()); | |
| 287 SSL_BadCertHook(nss_data->in, (SSLBadCertHandler)ssl_bad_cert, NULL); | |
| 288 | |
| 289 if(gsc->host) | |
| 290 SSL_SetURL(nss_data->in, gsc->host); | |
| 291 | |
| 292 #if 0 | |
| 293 /* This seems like it'd the be the correct way to implement the | |
| 294 nonblocking stuff, but it doesn't seem to work */ | |
| 295 SSL_HandshakeCallback(nss_data->in, | |
| 296 (SSLHandshakeCallback) ssl_nss_handshake_cb, gsc); | |
| 297 #endif | |
| 298 SSL_ResetHandshake(nss_data->in, PR_FALSE); | |
| 299 | |
| 300 nss_data->handshake_handler = purple_input_add(gsc->fd, | |
| 301 PURPLE_INPUT_READ, ssl_nss_handshake_cb, gsc); | |
| 302 | |
| 303 ssl_nss_handshake_cb(gsc, gsc->fd, PURPLE_INPUT_READ); | |
| 304 } | |
| 305 | |
| 306 static void | |
| 307 ssl_nss_close(PurpleSslConnection *gsc) | |
| 308 { | |
| 309 PurpleSslNssData *nss_data = PURPLE_SSL_NSS_DATA(gsc); | |
| 310 | |
| 311 if(!nss_data) | |
| 312 return; | |
| 313 | |
| 314 if (nss_data->in) PR_Close(nss_data->in); | |
| 315 /* if (nss_data->fd) PR_Close(nss_data->fd); */ | |
| 316 | |
| 317 if (nss_data->handshake_handler) | |
| 318 purple_input_remove(nss_data->handshake_handler); | |
| 319 | |
| 320 g_free(nss_data); | |
| 321 gsc->private_data = NULL; | |
| 322 } | |
| 323 | |
| 324 static size_t | |
| 325 ssl_nss_read(PurpleSslConnection *gsc, void *data, size_t len) | |
| 326 { | |
| 327 ssize_t ret; | |
| 328 PurpleSslNssData *nss_data = PURPLE_SSL_NSS_DATA(gsc); | |
| 329 | |
| 330 ret = PR_Read(nss_data->in, data, len); | |
| 331 | |
| 332 if (ret == -1) | |
| 333 set_errno(PR_GetError()); | |
| 334 | |
| 335 return ret; | |
| 336 } | |
| 337 | |
| 338 static size_t | |
| 339 ssl_nss_write(PurpleSslConnection *gsc, const void *data, size_t len) | |
| 340 { | |
| 341 ssize_t ret; | |
| 342 PurpleSslNssData *nss_data = PURPLE_SSL_NSS_DATA(gsc); | |
| 343 | |
| 344 if(!nss_data) | |
| 345 return 0; | |
| 346 | |
| 347 ret = PR_Write(nss_data->in, data, len); | |
| 348 | |
| 349 if (ret == -1) | |
| 350 set_errno(PR_GetError()); | |
| 351 | |
| 352 return ret; | |
| 353 } | |
| 354 | |
| 355 static PurpleSslOps ssl_ops = | |
| 356 { | |
| 357 ssl_nss_init, | |
| 358 ssl_nss_uninit, | |
| 359 ssl_nss_connect, | |
| 360 ssl_nss_close, | |
| 361 ssl_nss_read, | |
| 362 ssl_nss_write | |
| 363 }; | |
| 364 | |
| 365 #endif /* HAVE_NSS */ | |
| 366 | |
| 367 | |
| 368 static gboolean | |
| 369 plugin_load(PurplePlugin *plugin) | |
| 370 { | |
| 371 #ifdef HAVE_NSS | |
| 372 if (!purple_ssl_get_ops()) { | |
| 373 purple_ssl_set_ops(&ssl_ops); | |
| 374 } | |
| 375 | |
| 376 /* Init NSS now, so others can use it even if sslconn never does */ | |
| 377 ssl_nss_init_nss(); | |
| 378 | |
| 379 return TRUE; | |
| 380 #else | |
| 381 return FALSE; | |
| 382 #endif | |
| 383 } | |
| 384 | |
| 385 static gboolean | |
| 386 plugin_unload(PurplePlugin *plugin) | |
| 387 { | |
| 388 #ifdef HAVE_NSS | |
| 389 if (purple_ssl_get_ops() == &ssl_ops) { | |
| 390 purple_ssl_set_ops(NULL); | |
| 391 } | |
| 392 #endif | |
| 393 | |
| 394 return TRUE; | |
| 395 } | |
| 396 | |
| 397 static PurplePluginInfo info = | |
| 398 { | |
| 399 PURPLE_PLUGIN_MAGIC, | |
| 400 PURPLE_MAJOR_VERSION, | |
| 401 PURPLE_MINOR_VERSION, | |
| 402 PURPLE_PLUGIN_STANDARD, /**< type */ | |
| 403 NULL, /**< ui_requirement */ | |
| 404 PURPLE_PLUGIN_FLAG_INVISIBLE, /**< flags */ | |
| 405 NULL, /**< dependencies */ | |
| 406 PURPLE_PRIORITY_DEFAULT, /**< priority */ | |
| 407 | |
| 408 SSL_NSS_PLUGIN_ID, /**< id */ | |
| 409 N_("NSS"), /**< name */ | |
| 410 VERSION, /**< version */ | |
| 411 /** summary */ | |
| 412 N_("Provides SSL support through Mozilla NSS."), | |
| 413 /** description */ | |
| 414 N_("Provides SSL support through Mozilla NSS."), | |
| 415 "Christian Hammond <chipx86@gnupdate.org>", | |
| 416 PURPLE_WEBSITE, /**< homepage */ | |
| 417 | |
| 418 plugin_load, /**< load */ | |
| 419 plugin_unload, /**< unload */ | |
| 420 NULL, /**< destroy */ | |
| 421 | |
| 422 NULL, /**< ui_info */ | |
| 423 NULL, /**< extra_info */ | |
| 424 NULL, /**< prefs_info */ | |
| 425 NULL /**< actions */ | |
| 426 }; | |
| 427 | |
| 428 static void | |
| 429 init_plugin(PurplePlugin *plugin) | |
| 430 { | |
| 431 } | |
| 432 | |
| 433 PURPLE_INIT_PLUGIN(ssl_nss, init_plugin, info) |
