Sat Mar 24 23:28:38 2007

Asterisk developer's documentation


features.h File Reference

Call Parking and Pickup API Includes code and algorithms from the Zapata library. More...

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Data Structures

struct  ast_call_feature
 main call feature structure More...

Defines

#define FEATURE_APP_ARGS_LEN   256
#define FEATURE_APP_LEN   64
#define FEATURE_EXTEN_LEN   32
#define FEATURE_MAX_LEN   11
#define FEATURE_SNAME_LEN   32

Functions

int ast_bridge_call (struct ast_channel *chan, struct ast_channel *peer, struct ast_bridge_config *config)
 Bridge a call, optionally allowing redirection.
int ast_masq_park_call (struct ast_channel *rchan, struct ast_channel *host, int timeout, int *extout)
 Park a call via a masqueraded channel.
int ast_park_call (struct ast_channel *chan, struct ast_channel *host, int timeout, int *extout)
 Park a call and read back parked location.
char * ast_parking_ext (void)
 Determine system parking extension Returns the call parking extension for drivers that provide special call parking help.
int ast_pickup_call (struct ast_channel *chan)
 Pickup a call.
char * ast_pickup_ext (void)
 Determine system call pickup extension.
void ast_register_feature (struct ast_call_feature *feature)
 register new feature into feature_set
void ast_unregister_feature (struct ast_call_feature *feature)
 unregister feature from feature_set


Detailed Description

Call Parking and Pickup API Includes code and algorithms from the Zapata library.

Definition in file features.h.


Define Documentation

#define FEATURE_APP_ARGS_LEN   256
 

Definition at line 29 of file features.h.

Referenced by load_config().

#define FEATURE_APP_LEN   64
 

Definition at line 28 of file features.h.

Referenced by load_config().

#define FEATURE_EXTEN_LEN   32
 

Definition at line 31 of file features.h.

Referenced by load_config().

#define FEATURE_MAX_LEN   11
 

Definition at line 27 of file features.h.

Referenced by ast_bridge_call().

#define FEATURE_SNAME_LEN   32
 

Definition at line 30 of file features.h.

Referenced by load_config().


Function Documentation

int ast_bridge_call struct ast_channel chan,
struct ast_channel peer,
struct ast_bridge_config config
 

Bridge a call, optionally allowing redirection.

Definition at line 1254 of file res_features.c.

References ast_channel::appl, ast_answer(), ast_cdr_appenduserfield(), ast_cdr_setuserfield(), ast_channel_bridge(), ast_channel_setoption(), ast_clear_flag, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_OPTION, AST_CONTROL_RINGING, ast_dtmf_stream(), ast_feature_interpret(), AST_FEATURE_PLAY_WARNING, AST_FRAME_CONTROL, AST_FRAME_DTMF, ast_frfree(), ast_indicate(), ast_log(), AST_OPTION_FLAG_REQUEST, ast_strlen_zero(), ast_channel::cdr, config, ast_channel::data, ast_frame::data, ast_option_header::data, ast_frame::datalen, FEATURE_MAX_LEN, FEATURE_RETURN_PASSDIGITS, FEATURE_RETURN_SUCCESS, FEATURE_SENSE_CHAN, FEATURE_SENSE_PEER, ast_option_header::flag, ast_frame::frametype, free, LOG_DEBUG, LOG_WARNING, monitor_app, ast_channel::name, ast_option_header::option, pbx_builtin_getvar_helper(), pbx_builtin_setvar_helper(), pbx_exec(), pbx_findapp(), set_config_flags(), ast_frame::subclass, and ast_cdr::userfield.

Referenced by ast_bridge_call_thread(), builtin_atxfer(), and park_exec().

01255 {
01256    /* Copy voice back and forth between the two channels.  Give the peer
01257       the ability to transfer calls with '#<extension' syntax. */
01258    struct ast_frame *f;
01259    struct ast_channel *who;
01260    char chan_featurecode[FEATURE_MAX_LEN + 1]="";
01261    char peer_featurecode[FEATURE_MAX_LEN + 1]="";
01262    int res;
01263    int diff;
01264    int hasfeatures=0;
01265    int hadfeatures=0;
01266    struct ast_option_header *aoh;
01267    struct timeval start = { 0 , 0 };
01268    struct ast_bridge_config backup_config;
01269    char *monitor_exec;
01270 
01271    memset(&backup_config, 0, sizeof(backup_config));
01272 
01273    config->start_time = ast_tvnow();
01274 
01275    if (chan && peer) {
01276       pbx_builtin_setvar_helper(chan, "BRIDGEPEER", peer->name);
01277       pbx_builtin_setvar_helper(peer, "BRIDGEPEER", chan->name);
01278    } else if (chan)
01279       pbx_builtin_setvar_helper(chan, "BLINDTRANSFER", NULL);
01280 
01281    if (monitor_ok) {
01282       if (!monitor_app) { 
01283          if (!(monitor_app = pbx_findapp("Monitor")))
01284             monitor_ok=0;
01285       }
01286       if (monitor_app) {
01287          if ((monitor_exec = pbx_builtin_getvar_helper(chan, "AUTO_MONITOR"))) 
01288             pbx_exec(chan, monitor_app, monitor_exec, 1);
01289          else if ((monitor_exec = pbx_builtin_getvar_helper(peer, "AUTO_MONITOR")))
01290             pbx_exec(peer, monitor_app, monitor_exec, 1);
01291       }
01292    }
01293    
01294    set_config_flags(chan, peer, config);
01295    config->firstpass = 1;
01296 
01297    /* Answer if need be */
01298    if (ast_answer(chan))
01299       return -1;
01300    peer->appl = "Bridged Call";
01301    peer->data = chan->name;
01302 
01303    /* copy the userfield from the B-leg to A-leg if applicable */
01304    if (chan->cdr && peer->cdr && !ast_strlen_zero(peer->cdr->userfield)) {
01305       char tmp[256];
01306       if (!ast_strlen_zero(chan->cdr->userfield)) {
01307          snprintf(tmp, sizeof(tmp), "%s;%s", chan->cdr->userfield, peer->cdr->userfield);
01308          ast_cdr_appenduserfield(chan, tmp);
01309       } else
01310          ast_cdr_setuserfield(chan, peer->cdr->userfield);
01311       /* free the peer's cdr without ast_cdr_free complaining */
01312       free(peer->cdr);
01313       peer->cdr = NULL;
01314    }
01315    for (;;) {
01316       if (config->feature_timer)
01317          start = ast_tvnow();
01318 
01319       res = ast_channel_bridge(chan, peer, config, &f, &who);
01320 
01321       if (config->feature_timer) {
01322          /* Update time limit for next pass */
01323          diff = ast_tvdiff_ms(ast_tvnow(), start);
01324          config->feature_timer -= diff;
01325          if (hasfeatures) {
01326             /* Running on backup config, meaning a feature might be being
01327                activated, but that's no excuse to keep things going 
01328                indefinitely! */
01329             if (backup_config.feature_timer && ((backup_config.feature_timer -= diff) <= 0)) {
01330                ast_log(LOG_DEBUG, "Timed out, realtime this time!\n");
01331                config->feature_timer = 0;
01332                who = chan;
01333                if (f)
01334                   ast_frfree(f);
01335                f = NULL;
01336                res = 0;
01337             } else if (config->feature_timer <= 0) {
01338                /* Not *really* out of time, just out of time for
01339                   digits to come in for features. */
01340                ast_log(LOG_DEBUG, "Timed out for feature!\n");
01341                if (!ast_strlen_zero(peer_featurecode)) {
01342                   ast_dtmf_stream(chan, peer, peer_featurecode, 0);
01343                   memset(peer_featurecode, 0, sizeof(peer_featurecode));
01344                }
01345                if (!ast_strlen_zero(chan_featurecode)) {
01346                   ast_dtmf_stream(peer, chan, chan_featurecode, 0);
01347                   memset(chan_featurecode, 0, sizeof(chan_featurecode));
01348                }
01349                if (f)
01350                   ast_frfree(f);
01351                hasfeatures = !ast_strlen_zero(chan_featurecode) || !ast_strlen_zero(peer_featurecode);
01352                if (!hasfeatures) {
01353                   /* Restore original (possibly time modified) bridge config */
01354                   memcpy(config, &backup_config, sizeof(struct ast_bridge_config));
01355                   memset(&backup_config, 0, sizeof(backup_config));
01356                }
01357                hadfeatures = hasfeatures;
01358                /* Continue as we were */
01359                continue;
01360             }
01361          } else {
01362             if (config->feature_timer <=0) {
01363                /* We ran out of time */
01364                config->feature_timer = 0;
01365                who = chan;
01366                if (f)
01367                   ast_frfree(f);
01368                f = NULL;
01369                res = 0;
01370             }
01371          }
01372       }
01373       if (res < 0) {
01374          ast_log(LOG_WARNING, "Bridge failed on channels %s and %s\n", chan->name, peer->name);
01375          return -1;
01376       }
01377       
01378       if (!f || ((f->frametype == AST_FRAME_CONTROL) && ((f->subclass == AST_CONTROL_HANGUP) || (f->subclass == AST_CONTROL_BUSY) || 
01379          (f->subclass == AST_CONTROL_CONGESTION)))) {
01380             res = -1;
01381             break;
01382       }
01383       if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RINGING)) {
01384          if (who == chan)
01385             ast_indicate(peer, AST_CONTROL_RINGING);
01386          else
01387             ast_indicate(chan, AST_CONTROL_RINGING);
01388       }
01389       if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == -1)) {
01390          if (who == chan)
01391             ast_indicate(peer, -1);
01392          else
01393             ast_indicate(chan, -1);
01394       }
01395       if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_FLASH)) {
01396          if (who == chan)
01397             ast_indicate(peer, AST_CONTROL_FLASH);
01398          else
01399             ast_indicate(chan, AST_CONTROL_FLASH);
01400       }
01401       if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_OPTION)) {
01402          aoh = f->data;
01403          /* Forward option Requests */
01404          if (aoh && (aoh->flag == AST_OPTION_FLAG_REQUEST)) {
01405             if (who == chan)
01406                ast_channel_setoption(peer, ntohs(aoh->option), aoh->data, f->datalen - sizeof(struct ast_option_header), 0);
01407             else
01408                ast_channel_setoption(chan, ntohs(aoh->option), aoh->data, f->datalen - sizeof(struct ast_option_header), 0);
01409          }
01410       }
01411       /* check for '*', if we find it it's time to disconnect */
01412       if (f && (f->frametype == AST_FRAME_DTMF)) {
01413          char *featurecode;
01414          int sense;
01415          struct ast_channel *other;
01416 
01417          hadfeatures = hasfeatures;
01418          /* This cannot overrun because the longest feature is one shorter than our buffer */
01419          if (who == chan) {
01420             other = peer;
01421             sense = FEATURE_SENSE_CHAN;
01422             featurecode = chan_featurecode;
01423          } else  {
01424             other = chan;
01425             sense = FEATURE_SENSE_PEER;
01426             featurecode = peer_featurecode;
01427          }
01428          featurecode[strlen(featurecode)] = f->subclass;
01429          config->feature_timer = backup_config.feature_timer;
01430          res = ast_feature_interpret(chan, peer, config, featurecode, sense);
01431          switch(res) {
01432          case FEATURE_RETURN_PASSDIGITS:
01433             ast_dtmf_stream(other, who, featurecode, 0);
01434             /* Fall through */
01435          case FEATURE_RETURN_SUCCESS:
01436             memset(featurecode, 0, sizeof(chan_featurecode));
01437             break;
01438          }
01439          if (res >= FEATURE_RETURN_PASSDIGITS) {
01440             res = 0;
01441          } else {
01442             ast_frfree(f);
01443             break;
01444          }
01445          hasfeatures = !ast_strlen_zero(chan_featurecode) || !ast_strlen_zero(peer_featurecode);
01446          if (hadfeatures && !hasfeatures) {
01447             /* Restore backup */
01448             memcpy(config, &backup_config, sizeof(struct ast_bridge_config));
01449             memset(&backup_config, 0, sizeof(struct ast_bridge_config));
01450          } else if (hasfeatures) {
01451             if (!hadfeatures) {
01452                /* Backup configuration */
01453                memcpy(&backup_config, config, sizeof(struct ast_bridge_config));
01454                /* Setup temporary config options */
01455                config->play_warning = 0;
01456                ast_clear_flag(&(config->features_caller), AST_FEATURE_PLAY_WARNING);
01457                ast_clear_flag(&(config->features_callee), AST_FEATURE_PLAY_WARNING);
01458                config->warning_freq = 0;
01459                config->warning_sound = NULL;
01460                config->end_sound = NULL;
01461                config->start_sound = NULL;
01462                config->firstpass = 0;
01463             }
01464             config->feature_timer = featuredigittimeout;
01465             ast_log(LOG_DEBUG, "Set time limit to %ld\n", config->feature_timer);
01466          }
01467       }
01468       if (f)
01469          ast_frfree(f);
01470    }
01471    return res;
01472 }

int ast_masq_park_call struct ast_channel rchan,
struct ast_channel host,
int  timeout,
int *  extout
 

Park a call via a masqueraded channel.

Parameters:
rchan the real channel to be parked
host the channel to have the parking read to Masquerade the channel rchan into a new, empty channel which is then parked with ast_park_call
timeout is a timeout in milliseconds
extout is a parameter to an int that will hold the parked location, or NULL if you want

Definition at line 401 of file res_features.c.

References ast_channel_alloc(), ast_channel_masquerade(), ast_frfree(), ast_log(), ast_park_call(), ast_read(), ast_channel::context, ast_channel::exten, LOG_WARNING, ast_channel::name, ast_channel::priority, ast_channel::readformat, and ast_channel::writeformat.

Referenced by mgcp_ss(), parkandannounce_exec(), skinny_ss(), and ss_thread().

00402 {
00403    struct ast_channel *chan;
00404    struct ast_frame *f;
00405 
00406    /* Make a new, fake channel that we'll use to masquerade in the real one */
00407    chan = ast_channel_alloc(0);
00408    if (chan) {
00409       /* Let us keep track of the channel name */
00410       snprintf(chan->name, sizeof (chan->name), "Parked/%s",rchan->name);
00411 
00412       /* Make formats okay */
00413       chan->readformat = rchan->readformat;
00414       chan->writeformat = rchan->writeformat;
00415       ast_channel_masquerade(chan, rchan);
00416 
00417       /* Setup the extensions and such */
00418       ast_copy_string(chan->context, rchan->context, sizeof(chan->context));
00419       ast_copy_string(chan->exten, rchan->exten, sizeof(chan->exten));
00420       chan->priority = rchan->priority;
00421 
00422       /* Make the masq execute */
00423       f = ast_read(chan);
00424       if (f)
00425          ast_frfree(f);
00426       ast_park_call(chan, peer, timeout, extout);
00427    } else {
00428       ast_log(LOG_WARNING, "Unable to create parked channel\n");
00429       return -1;
00430    }
00431    return 0;
00432 }

int ast_park_call struct ast_channel chan,
struct ast_channel host,
int  timeout,
int *  extout
 

Park a call and read back parked location.

Parameters:
chan the channel to actually be parked
host the channel which will have the parked location read to Park the channel chan, and read back the parked location to the host. If the call is not picked up within a specified period of time, then the call will return to the last step that it was in (in terms of exten, priority and context)
timeout is a timeout in milliseconds
extout is a parameter to an int that will hold the parked location, or NULL if you want

Definition at line 278 of file res_features.c.

References ast_log(), AST_MAX_EXTENSION, ast_mutex_lock(), exten, LOG_WARNING, malloc, parkeduser::next, parkinglot, and parkeduser::parkingnum.

Referenced by ast_masq_park_call(), builtin_blindtransfer(), iax_park_thread(), park_call_exec(), and sip_park_thread().

00279 {
00280    struct parkeduser *pu, *cur;
00281    int i,x,parking_range;
00282    char exten[AST_MAX_EXTENSION];
00283    struct ast_context *con;
00284 
00285    pu = malloc(sizeof(struct parkeduser));
00286    if (!pu) {
00287       ast_log(LOG_WARNING, "Out of memory\n");
00288       return -1;
00289    }
00290    memset(pu, 0, sizeof(struct parkeduser));
00291    ast_mutex_lock(&parking_lock);
00292    parking_range = parking_stop - parking_start+1;
00293    for (i = 0; i < parking_range; i++) {
00294       x = (i + parking_offset) % parking_range + parking_start;
00295       cur = parkinglot;
00296       while(cur) {
00297          if (cur->parkingnum == x) 
00298             break;
00299          cur = cur->next;
00300       }
00301       if (!cur)
00302          break;
00303    }
00304 
00305    if (!(i < parking_range)) {
00306       ast_log(LOG_WARNING, "No more parking spaces\n");
00307       free(pu);
00308       ast_mutex_unlock(&parking_lock);
00309       return -1;
00310    }
00311    if (parkfindnext) 
00312       parking_offset = x - parking_start + 1;
00313    chan->appl = "Parked Call";
00314    chan->data = NULL; 
00315 
00316    pu->chan = chan;
00317    /* Start music on hold */
00318    if (chan != peer) {
00319       ast_indicate(pu->chan, AST_CONTROL_HOLD);
00320       ast_moh_start(pu->chan, NULL);
00321    }
00322    pu->start = ast_tvnow();
00323    pu->parkingnum = x;
00324    if (timeout > 0)
00325       pu->parkingtime = timeout;
00326    else
00327       pu->parkingtime = parkingtime;
00328    if (extout)
00329       *extout = x;
00330    if (peer) 
00331       ast_copy_string(pu->peername, peer->name, sizeof(pu->peername));
00332 
00333    /* Remember what had been dialed, so that if the parking
00334       expires, we try to come back to the same place */
00335    if (!ast_strlen_zero(chan->macrocontext))
00336       ast_copy_string(pu->context, chan->macrocontext, sizeof(pu->context));
00337    else
00338       ast_copy_string(pu->context, chan->context, sizeof(pu->context));
00339    if (!ast_strlen_zero(chan->macroexten))
00340       ast_copy_string(pu->exten, chan->macroexten, sizeof(pu->exten));
00341    else
00342       ast_copy_string(pu->exten, chan->exten, sizeof(pu->exten));
00343    if (chan->macropriority)
00344       pu->priority = chan->macropriority;
00345    else
00346       pu->priority = chan->priority;
00347    pu->next = parkinglot;
00348    parkinglot = pu;
00349    /* If parking a channel directly, don't quiet yet get parking running on it */
00350    if (peer == chan) 
00351       pu->notquiteyet = 1;
00352    ast_mutex_unlock(&parking_lock);
00353    /* Wake up the (presumably select()ing) thread */
00354    pthread_kill(parking_thread, SIGURG);
00355    if (option_verbose > 1) 
00356       ast_verbose(VERBOSE_PREFIX_2 "Parked %s on %d. Will timeout back to extension [%s] %s, %d in %d seconds\n", pu->chan->name, pu->parkingnum, pu->context, pu->exten, pu->priority, (pu->parkingtime/1000));
00357 
00358    manager_event(EVENT_FLAG_CALL, "ParkedCall",
00359       "Exten: %d\r\n"
00360       "Channel: %s\r\n"
00361       "From: %s\r\n"
00362       "Timeout: %ld\r\n"
00363       "CallerID: %s\r\n"
00364       "CallerIDName: %s\r\n"
00365       ,pu->parkingnum, pu->chan->name, peer ? peer->name : ""
00366       ,(long)pu->start.tv_sec + (long)(pu->parkingtime/1000) - (long)time(NULL)
00367       ,(pu->chan->cid.cid_num ? pu->chan->cid.cid_num : "<unknown>")
00368       ,(pu->chan->cid.cid_name ? pu->chan->cid.cid_name : "<unknown>")
00369       );
00370 
00371    if (peer) {
00372       if (adsipark && adsi_available(peer)) {
00373          adsi_announce_park(peer, pu->parkingnum);
00374       }
00375       if (adsipark && adsi_available(peer)) {
00376          adsi_unload_session(peer);
00377       }
00378    }
00379    con = ast_context_find(parking_con);
00380    if (!con) {
00381       con = ast_context_create(NULL, parking_con, registrar);
00382       if (!con) {
00383          ast_log(LOG_ERROR, "Parking context '%s' does not exist and unable to create\n", parking_con);
00384       }
00385    }
00386    if (con) {
00387       snprintf(exten, sizeof(exten), "%d", x);
00388       ast_add_extension2(con, 1, exten, 1, NULL, NULL, parkedcall, strdup(exten), FREE, registrar);
00389    }
00390    if (peer) 
00391       ast_say_digits(peer, pu->parkingnum, "", peer->language);
00392    if (pu->notquiteyet) {
00393       /* Wake up parking thread if we're really done */
00394       ast_moh_start(pu->chan, NULL);
00395       pu->notquiteyet = 0;
00396       pthread_kill(parking_thread, SIGURG);
00397    }
00398    return 0;
00399 }

char* ast_parking_ext void   ) 
 

Determine system parking extension Returns the call parking extension for drivers that provide special call parking help.

Definition at line 163 of file res_features.c.

Referenced by builtin_blindtransfer(), dp_lookup(), get_refer_info(), handle_request_refer(), load_config(), mgcp_ss(), skinny_ss(), socket_read(), and ss_thread().

00164 {
00165    return parking_ext;
00166 }

int ast_pickup_call struct ast_channel chan  ) 
 

Pickup a call.

Definition at line 1918 of file res_features.c.

References ast_channel::_state, ast_answer(), ast_channel_masquerade(), ast_channel_walk_locked(), AST_CONTROL_ANSWER, ast_log(), ast_mutex_unlock(), ast_queue_control(), AST_STATE_RING, AST_STATE_RINGING, ast_channel::callgroup, ast_channel::lock, LOG_DEBUG, LOG_WARNING, ast_channel::name, option_debug, ast_channel::pbx, and ast_channel::pickupgroup.

Referenced by cb_events(), handle_request_invite(), mgcp_ss(), monitor_handle_notowned(), skinny_ss(), and ss_thread().

01919 {
01920    struct ast_channel *cur = NULL;
01921    int res = -1;
01922 
01923    while ( (cur = ast_channel_walk_locked(cur)) != NULL) {
01924       if (!cur->pbx && 
01925          (cur != chan) &&
01926          (chan->pickupgroup & cur->callgroup) &&
01927          ((cur->_state == AST_STATE_RINGING) ||
01928           (cur->_state == AST_STATE_RING))) {
01929             break;
01930       }
01931       ast_mutex_unlock(&cur->lock);
01932    }
01933    if (cur) {
01934       if (option_debug)
01935          ast_log(LOG_DEBUG, "Call pickup on chan '%s' by '%s'\n",cur->name, chan->name);
01936       res = ast_answer(chan);
01937       if (res)
01938          ast_log(LOG_WARNING, "Unable to answer '%s'\n", chan->name);
01939       res = ast_queue_control(chan, AST_CONTROL_ANSWER);
01940       if (res)
01941          ast_log(LOG_WARNING, "Unable to queue answer on '%s'\n", chan->name);
01942       res = ast_channel_masquerade(cur, chan);
01943       if (res)
01944          ast_log(LOG_WARNING, "Unable to masquerade '%s' into '%s'\n", chan->name, cur->name);     /* Done */
01945       ast_mutex_unlock(&cur->lock);
01946    } else   {
01947       if (option_debug)
01948          ast_log(LOG_DEBUG, "No call pickup possible...\n");
01949    }
01950    return res;
01951 }

char* ast_pickup_ext void   ) 
 

Determine system call pickup extension.

Definition at line 168 of file res_features.c.

Referenced by cb_events(), get_destination(), handle_request_invite(), handle_showfeatures(), mgcp_ss(), monitor_handle_notowned(), skinny_ss(), and ss_thread().

00169 {
00170    return pickup_ext;
00171 }

void ast_register_feature struct ast_call_feature feature  ) 
 

register new feature into feature_set

Parameters:
feature an ast_call_feature object which contains a keysequence and a callback function which is called when this keysequence is pressed during a call.

Referenced by load_config().

void ast_unregister_feature struct ast_call_feature feature  ) 
 

unregister feature from feature_set

Parameters:
feature the ast_call_feature object which was registered before

Definition at line 888 of file res_features.c.

References AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, and free.

00889 {
00890    if (!feature) return;
00891 
00892    AST_LIST_LOCK(&feature_list);
00893    AST_LIST_REMOVE(&feature_list,feature,feature_entry);
00894    AST_LIST_UNLOCK(&feature_list);
00895    free(feature);
00896 }


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