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00036 #include "asterisk.h"
00037
00038 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 335720 $")
00039
00040 #include "asterisk/file.h"
00041 #include "asterisk/channel.h"
00042 #include "asterisk/pbx.h"
00043 #include "asterisk/module.h"
00044 #include "asterisk/lock.h"
00045 #include "asterisk/app.h"
00046 #include "asterisk/features.h"
00047 #include "asterisk/manager.h"
00048 #include "asterisk/callerid.h"
00049 #include "asterisk/cel.h"
00050
00051 #define PICKUPMARK "PICKUPMARK"
00052
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00102 static const char app[] = "Pickup";
00103 static const char app2[] = "PickupChan";
00104
00105 struct pickup_by_name_args {
00106 const char *name;
00107 size_t len;
00108 };
00109
00110 static int pickup_by_name_cb(void *obj, void *arg, void *data, int flags)
00111 {
00112 struct ast_channel *target = obj;
00113 struct pickup_by_name_args *args = data;
00114
00115 ast_channel_lock(target);
00116 if (!strncasecmp(target->name, args->name, args->len) && ast_can_pickup(target)) {
00117
00118 return CMP_MATCH | CMP_STOP;
00119 }
00120 ast_channel_unlock(target);
00121
00122 return 0;
00123 }
00124
00125
00126 static struct ast_channel *my_ast_get_channel_by_name_locked(const char *channame)
00127 {
00128 char *chkchan;
00129 struct pickup_by_name_args pickup_args;
00130
00131
00132
00133
00134 if (strchr(channame, '-')) {
00135
00136 pickup_args.len = strlen(channame);
00137 pickup_args.name = channame;
00138 } else {
00139
00140
00141
00142
00143 pickup_args.len = strlen(channame) + 1;
00144 chkchan = alloca(pickup_args.len + 1);
00145 strcpy(chkchan, channame);
00146 strcat(chkchan, "-");
00147 pickup_args.name = chkchan;
00148 }
00149
00150 return ast_channel_callback(pickup_by_name_cb, NULL, &pickup_args, 0);
00151 }
00152
00153
00154 static int pickup_by_channel(struct ast_channel *chan, char *pickup)
00155 {
00156 int res = -1;
00157 struct ast_channel *target;
00158
00159 target = my_ast_get_channel_by_name_locked(pickup);
00160 if (target) {
00161
00162 if (chan != target) {
00163 res = ast_do_pickup(chan, target);
00164 }
00165 ast_channel_unlock(target);
00166 target = ast_channel_unref(target);
00167 }
00168
00169 return res;
00170 }
00171
00172
00173 static int pickup_by_exten(struct ast_channel *chan, const char *exten, const char *context)
00174 {
00175 struct ast_channel *target = NULL;
00176 struct ast_channel_iterator *iter;
00177 int res = -1;
00178
00179 if (!(iter = ast_channel_iterator_by_exten_new(exten, context))) {
00180 return -1;
00181 }
00182
00183 while ((target = ast_channel_iterator_next(iter))) {
00184 ast_channel_lock(target);
00185 if ((chan != target) && ast_can_pickup(target)) {
00186 ast_log(LOG_NOTICE, "%s pickup by %s\n", target->name, chan->name);
00187 break;
00188 }
00189 ast_channel_unlock(target);
00190 target = ast_channel_unref(target);
00191 }
00192
00193 ast_channel_iterator_destroy(iter);
00194
00195 if (target) {
00196 res = ast_do_pickup(chan, target);
00197 ast_channel_unlock(target);
00198 target = ast_channel_unref(target);
00199 }
00200
00201 return res;
00202 }
00203
00204 static int find_by_mark(void *obj, void *arg, void *data, int flags)
00205 {
00206 struct ast_channel *target = obj;
00207 const char *mark = data;
00208 const char *tmp;
00209
00210 ast_channel_lock(target);
00211 tmp = pbx_builtin_getvar_helper(target, PICKUPMARK);
00212 if (tmp && !strcasecmp(tmp, mark) && ast_can_pickup(target)) {
00213
00214 return CMP_MATCH | CMP_STOP;
00215 }
00216 ast_channel_unlock(target);
00217
00218 return 0;
00219 }
00220
00221
00222 static int pickup_by_mark(struct ast_channel *chan, const char *mark)
00223 {
00224 struct ast_channel *target;
00225 int res = -1;
00226
00227
00228 target = ast_channel_callback(find_by_mark, NULL, (char *) mark, 0);
00229 if (target) {
00230 res = ast_do_pickup(chan, target);
00231 ast_channel_unlock(target);
00232 target = ast_channel_unref(target);
00233 }
00234
00235 return res;
00236 }
00237
00238 static int find_channel_by_group(void *obj, void *arg, void *data, int flags)
00239 {
00240 struct ast_channel *target = obj;
00241 struct ast_channel *chan = data;
00242
00243 ast_channel_lock(target);
00244 if (chan != target && (chan->pickupgroup & target->callgroup)
00245 && ast_can_pickup(target)) {
00246
00247 return CMP_MATCH | CMP_STOP;
00248 }
00249 ast_channel_unlock(target);
00250
00251 return 0;
00252 }
00253
00254 static int pickup_by_group(struct ast_channel *chan)
00255 {
00256 struct ast_channel *target;
00257 int res = -1;
00258
00259
00260 target = ast_channel_callback(find_channel_by_group, NULL, chan, 0);
00261 if (target) {
00262 ast_log(LOG_NOTICE, "pickup %s attempt by %s\n", target->name, chan->name);
00263 res = ast_do_pickup(chan, target);
00264 ast_channel_unlock(target);
00265 target = ast_channel_unref(target);
00266 }
00267
00268 return res;
00269 }
00270
00271
00272 static int pickup_exec(struct ast_channel *chan, const char *data)
00273 {
00274 char *tmp = ast_strdupa(data);
00275 char *exten = NULL, *context = NULL;
00276
00277 if (ast_strlen_zero(data)) {
00278 return pickup_by_group(chan) ? 0 : -1;
00279 }
00280
00281
00282 while (!ast_strlen_zero(tmp) && (exten = strsep(&tmp, "&"))) {
00283 if ((context = strchr(exten, '@')))
00284 *context++ = '\0';
00285 if (!ast_strlen_zero(context) && !strcasecmp(context, PICKUPMARK)) {
00286 if (!pickup_by_mark(chan, exten)) {
00287
00288 return -1;
00289 }
00290 } else {
00291 if (!pickup_by_exten(chan, exten, !ast_strlen_zero(context) ? context : chan->context)) {
00292
00293 return -1;
00294 }
00295 }
00296 ast_log(LOG_NOTICE, "No target channel found for %s.\n", exten);
00297 }
00298
00299
00300 return 0;
00301 }
00302
00303
00304 static int find_by_part(void *obj, void *arg, void *data, int flags)
00305 {
00306 struct ast_channel *target = obj;
00307 const char *part = data;
00308 int len = strlen(part);
00309
00310 ast_channel_lock(target);
00311 if (len <= strlen(target->name) && !strncmp(target->name, part, len)
00312 && ast_can_pickup(target)) {
00313
00314 return CMP_MATCH | CMP_STOP;
00315 }
00316 ast_channel_unlock(target);
00317
00318 return 0;
00319 }
00320
00321
00322 static int pickup_by_part(struct ast_channel *chan, const char *part)
00323 {
00324 struct ast_channel *target;
00325 int res = -1;
00326
00327
00328 target = ast_channel_callback(find_by_part, NULL, (char *) part, 0);
00329 if (target) {
00330 res = ast_do_pickup(chan, target);
00331 ast_channel_unlock(target);
00332 target = ast_channel_unref(target);
00333 }
00334
00335 return res;
00336 }
00337
00338
00339 static int pickupchan_exec(struct ast_channel *chan, const char *data)
00340 {
00341 int partial_pickup = 0;
00342 char *pickup = NULL;
00343 char *parse = ast_strdupa(data);
00344 AST_DECLARE_APP_ARGS(args,
00345 AST_APP_ARG(channel);
00346 AST_APP_ARG(options);
00347 );
00348 AST_STANDARD_APP_ARGS(args, parse);
00349
00350 if (ast_strlen_zero(args.channel)) {
00351 ast_log(LOG_WARNING, "PickupChan requires an argument (channel)!\n");
00352
00353 return 0;
00354 }
00355
00356 if (!ast_strlen_zero(args.options) && strchr(args.options, 'p')) {
00357 partial_pickup = 1;
00358 }
00359
00360
00361 while (!ast_strlen_zero(args.channel) && (pickup = strsep(&args.channel, "&"))) {
00362 if (!strncasecmp(chan->name, pickup, strlen(pickup))) {
00363 ast_log(LOG_NOTICE, "Cannot pickup your own channel %s.\n", pickup);
00364 } else {
00365 if (partial_pickup) {
00366 if (!pickup_by_part(chan, pickup)) {
00367
00368 return -1;
00369 }
00370 } else if (!pickup_by_channel(chan, pickup)) {
00371
00372 return -1;
00373 }
00374 ast_log(LOG_NOTICE, "No target channel found for %s.\n", pickup);
00375 }
00376 }
00377
00378
00379 return 0;
00380 }
00381
00382 static int unload_module(void)
00383 {
00384 int res;
00385
00386 res = ast_unregister_application(app);
00387 res |= ast_unregister_application(app2);
00388
00389 return res;
00390 }
00391
00392 static int load_module(void)
00393 {
00394 int res;
00395
00396 res = ast_register_application_xml(app, pickup_exec);
00397 res |= ast_register_application_xml(app2, pickupchan_exec);
00398
00399 return res;
00400 }
00401
00402 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Directed Call Pickup Application");