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4805 lines
139 KiB
4805 lines
139 KiB
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Channel Management
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*
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* \author Mark Spencer <markster@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/_private.h"
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#include <sys/time.h>
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#include <signal.h>
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#include <math.h>
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#include "asterisk/paths.h" /* use ast_config_AST_SYSTEM_NAME */
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#include "asterisk/zapata.h"
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#include "asterisk/pbx.h"
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#include "asterisk/frame.h"
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#include "asterisk/sched.h"
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#include "asterisk/channel.h"
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#include "asterisk/musiconhold.h"
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#include "asterisk/say.h"
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#include "asterisk/file.h"
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#include "asterisk/cli.h"
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#include "asterisk/translate.h"
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#include "asterisk/manager.h"
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#include "asterisk/chanvars.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/indications.h"
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#include "asterisk/monitor.h"
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#include "asterisk/causes.h"
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#include "asterisk/callerid.h"
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#include "asterisk/utils.h"
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#include "asterisk/lock.h"
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#include "asterisk/app.h"
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#include "asterisk/transcap.h"
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#include "asterisk/devicestate.h"
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#include "asterisk/sha1.h"
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#include "asterisk/threadstorage.h"
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#include "asterisk/slinfactory.h"
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#include "asterisk/audiohook.h"
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#ifdef HAVE_EPOLL
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#include <sys/epoll.h>
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#endif
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struct ast_epoll_data {
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struct ast_channel *chan;
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int which;
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};
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/* uncomment if you have problems with 'monitoring' synchronized files */
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#if 0
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#define MONITOR_CONSTANT_DELAY
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#define MONITOR_DELAY 150 * 8 /*!< 150 ms of MONITORING DELAY */
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#endif
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/*! \brief Prevent new channel allocation if shutting down. */
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static int shutting_down;
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static int uniqueint;
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unsigned long global_fin, global_fout;
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AST_THREADSTORAGE(state2str_threadbuf);
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#define STATE2STR_BUFSIZE 32
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/*! Default amount of time to use when emulating a digit as a begin and end
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* 100ms */
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#define AST_DEFAULT_EMULATE_DTMF_DURATION 100
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/*! Minimum allowed digit length - 80ms */
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#define AST_MIN_DTMF_DURATION 80
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/*! Minimum amount of time between the end of the last digit and the beginning
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* of a new one - 45ms */
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#define AST_MIN_DTMF_GAP 45
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/*! \brief List of channel drivers */
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struct chanlist {
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const struct ast_channel_tech *tech;
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AST_LIST_ENTRY(chanlist) list;
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};
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/*! \brief the list of registered channel types */
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static AST_LIST_HEAD_NOLOCK_STATIC(backends, chanlist);
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/*! \brief the list of channels we have. Note that the lock for this list is used for
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both the channels list and the backends list. */
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static AST_RWLIST_HEAD_STATIC(channels, ast_channel);
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/*! \brief map AST_CAUSE's to readable string representations
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*
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* \ref causes.h
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*/
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const struct ast_cause {
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int cause;
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const char *name;
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const char *desc;
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} causes[] = {
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{ AST_CAUSE_UNALLOCATED, "UNALLOCATED", "Unallocated (unassigned) number" },
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{ AST_CAUSE_NO_ROUTE_TRANSIT_NET, "NO_ROUTE_TRANSIT_NET", "No route to specified transmit network" },
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{ AST_CAUSE_NO_ROUTE_DESTINATION, "NO_ROUTE_DESTINATION", "No route to destination" },
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{ AST_CAUSE_CHANNEL_UNACCEPTABLE, "CHANNEL_UNACCEPTABLE", "Channel unacceptable" },
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{ AST_CAUSE_CALL_AWARDED_DELIVERED, "CALL_AWARDED_DELIVERED", "Call awarded and being delivered in an established channel" },
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{ AST_CAUSE_NORMAL_CLEARING, "NORMAL_CLEARING", "Normal Clearing" },
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{ AST_CAUSE_USER_BUSY, "USER_BUSY", "User busy" },
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{ AST_CAUSE_NO_USER_RESPONSE, "NO_USER_RESPONSE", "No user responding" },
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{ AST_CAUSE_NO_ANSWER, "NO_ANSWER", "User alerting, no answer" },
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{ AST_CAUSE_CALL_REJECTED, "CALL_REJECTED", "Call Rejected" },
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{ AST_CAUSE_NUMBER_CHANGED, "NUMBER_CHANGED", "Number changed" },
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{ AST_CAUSE_DESTINATION_OUT_OF_ORDER, "DESTINATION_OUT_OF_ORDER", "Destination out of order" },
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{ AST_CAUSE_INVALID_NUMBER_FORMAT, "INVALID_NUMBER_FORMAT", "Invalid number format" },
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{ AST_CAUSE_FACILITY_REJECTED, "FACILITY_REJECTED", "Facility rejected" },
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{ AST_CAUSE_RESPONSE_TO_STATUS_ENQUIRY, "RESPONSE_TO_STATUS_ENQUIRY", "Response to STATus ENQuiry" },
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{ AST_CAUSE_NORMAL_UNSPECIFIED, "NORMAL_UNSPECIFIED", "Normal, unspecified" },
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{ AST_CAUSE_NORMAL_CIRCUIT_CONGESTION, "NORMAL_CIRCUIT_CONGESTION", "Circuit/channel congestion" },
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{ AST_CAUSE_NETWORK_OUT_OF_ORDER, "NETWORK_OUT_OF_ORDER", "Network out of order" },
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{ AST_CAUSE_NORMAL_TEMPORARY_FAILURE, "NORMAL_TEMPORARY_FAILURE", "Temporary failure" },
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{ AST_CAUSE_SWITCH_CONGESTION, "SWITCH_CONGESTION", "Switching equipment congestion" },
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{ AST_CAUSE_ACCESS_INFO_DISCARDED, "ACCESS_INFO_DISCARDED", "Access information discarded" },
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{ AST_CAUSE_REQUESTED_CHAN_UNAVAIL, "REQUESTED_CHAN_UNAVAIL", "Requested channel not available" },
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{ AST_CAUSE_PRE_EMPTED, "PRE_EMPTED", "Pre-empted" },
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{ AST_CAUSE_FACILITY_NOT_SUBSCRIBED, "FACILITY_NOT_SUBSCRIBED", "Facility not subscribed" },
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{ AST_CAUSE_OUTGOING_CALL_BARRED, "OUTGOING_CALL_BARRED", "Outgoing call barred" },
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{ AST_CAUSE_INCOMING_CALL_BARRED, "INCOMING_CALL_BARRED", "Incoming call barred" },
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{ AST_CAUSE_BEARERCAPABILITY_NOTAUTH, "BEARERCAPABILITY_NOTAUTH", "Bearer capability not authorized" },
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{ AST_CAUSE_BEARERCAPABILITY_NOTAVAIL, "BEARERCAPABILITY_NOTAVAIL", "Bearer capability not available" },
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{ AST_CAUSE_BEARERCAPABILITY_NOTIMPL, "BEARERCAPABILITY_NOTIMPL", "Bearer capability not implemented" },
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{ AST_CAUSE_CHAN_NOT_IMPLEMENTED, "CHAN_NOT_IMPLEMENTED", "Channel not implemented" },
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{ AST_CAUSE_FACILITY_NOT_IMPLEMENTED, "FACILITY_NOT_IMPLEMENTED", "Facility not implemented" },
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{ AST_CAUSE_INVALID_CALL_REFERENCE, "INVALID_CALL_REFERENCE", "Invalid call reference value" },
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{ AST_CAUSE_INCOMPATIBLE_DESTINATION, "INCOMPATIBLE_DESTINATION", "Incompatible destination" },
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{ AST_CAUSE_INVALID_MSG_UNSPECIFIED, "INVALID_MSG_UNSPECIFIED", "Invalid message unspecified" },
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{ AST_CAUSE_MANDATORY_IE_MISSING, "MANDATORY_IE_MISSING", "Mandatory information element is missing" },
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{ AST_CAUSE_MESSAGE_TYPE_NONEXIST, "MESSAGE_TYPE_NONEXIST", "Message type nonexist." },
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{ AST_CAUSE_WRONG_MESSAGE, "WRONG_MESSAGE", "Wrong message" },
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{ AST_CAUSE_IE_NONEXIST, "IE_NONEXIST", "Info. element nonexist or not implemented" },
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{ AST_CAUSE_INVALID_IE_CONTENTS, "INVALID_IE_CONTENTS", "Invalid information element contents" },
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{ AST_CAUSE_WRONG_CALL_STATE, "WRONG_CALL_STATE", "Message not compatible with call state" },
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{ AST_CAUSE_RECOVERY_ON_TIMER_EXPIRE, "RECOVERY_ON_TIMER_EXPIRE", "Recover on timer expiry" },
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{ AST_CAUSE_MANDATORY_IE_LENGTH_ERROR, "MANDATORY_IE_LENGTH_ERROR", "Mandatory IE length error" },
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{ AST_CAUSE_PROTOCOL_ERROR, "PROTOCOL_ERROR", "Protocol error, unspecified" },
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{ AST_CAUSE_INTERWORKING, "INTERWORKING", "Interworking, unspecified" },
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};
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struct ast_variable *ast_channeltype_list(void)
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{
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struct chanlist *cl;
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struct ast_variable *var=NULL, *prev = NULL;
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AST_LIST_TRAVERSE(&backends, cl, list) {
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if (prev) {
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if ((prev->next = ast_variable_new(cl->tech->type, cl->tech->description, "")))
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prev = prev->next;
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} else {
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var = ast_variable_new(cl->tech->type, cl->tech->description, "");
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prev = var;
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}
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}
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return var;
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}
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/*! \brief Show channel types - CLI command */
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static char *handle_cli_core_show_channeltypes(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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#define FORMAT "%-10.10s %-40.40s %-12.12s %-12.12s %-12.12s\n"
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struct chanlist *cl;
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int count_chan = 0;
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switch (cmd) {
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case CLI_INIT:
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e->command = "core show channeltypes";
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e->usage =
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"Usage: core show channeltypes\n"
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" Lists available channel types registered in your\n"
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" Asterisk server.\n";
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return NULL;
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case CLI_GENERATE:
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return NULL;
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}
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if (a->argc != 3)
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return CLI_SHOWUSAGE;
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ast_cli(a->fd, FORMAT, "Type", "Description", "Devicestate", "Indications", "Transfer");
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ast_cli(a->fd, FORMAT, "----------", "-----------", "-----------", "-----------", "--------");
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if (AST_RWLIST_RDLOCK(&channels)) {
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ast_log(LOG_WARNING, "Unable to lock channel list\n");
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return CLI_FAILURE;
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}
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AST_LIST_TRAVERSE(&backends, cl, list) {
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ast_cli(a->fd, FORMAT, cl->tech->type, cl->tech->description,
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(cl->tech->devicestate) ? "yes" : "no",
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(cl->tech->indicate) ? "yes" : "no",
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(cl->tech->transfer) ? "yes" : "no");
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count_chan++;
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}
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AST_RWLIST_UNLOCK(&channels);
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ast_cli(a->fd, "----------\n%d channel drivers registered.\n", count_chan);
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return CLI_SUCCESS;
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#undef FORMAT
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}
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static char *complete_channeltypes(struct ast_cli_args *a)
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{
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struct chanlist *cl;
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int which = 0;
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int wordlen;
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char *ret = NULL;
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if (a->pos != 3)
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return NULL;
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wordlen = strlen(a->word);
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AST_LIST_TRAVERSE(&backends, cl, list) {
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if (!strncasecmp(a->word, cl->tech->type, wordlen) && ++which > a->n) {
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ret = ast_strdup(cl->tech->type);
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break;
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}
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}
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return ret;
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}
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/*! \brief Show details about a channel driver - CLI command */
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static char *handle_cli_core_show_channeltype(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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struct chanlist *cl = NULL;
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switch (cmd) {
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case CLI_INIT:
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e->command = "core show channeltype";
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e->usage =
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"Usage: core show channeltype <name>\n"
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" Show details about the specified channel type, <name>.\n";
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return NULL;
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case CLI_GENERATE:
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return complete_channeltypes(a);
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}
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if (a->argc != 4)
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return CLI_SHOWUSAGE;
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if (AST_RWLIST_RDLOCK(&channels)) {
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ast_log(LOG_WARNING, "Unable to lock channel list\n");
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return CLI_FAILURE;
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}
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AST_LIST_TRAVERSE(&backends, cl, list) {
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if (!strncasecmp(cl->tech->type, a->argv[3], strlen(cl->tech->type)))
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break;
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}
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if (!cl) {
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ast_cli(a->fd, "\n%s is not a registered channel driver.\n", a->argv[3]);
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AST_RWLIST_UNLOCK(&channels);
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return CLI_FAILURE;
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}
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ast_cli(a->fd,
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"-- Info about channel driver: %s --\n"
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" Device State: %s\n"
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" Indication: %s\n"
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" Transfer : %s\n"
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" Capabilities: %d\n"
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" Digit Begin: %s\n"
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" Digit End: %s\n"
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" Send HTML : %s\n"
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" Image Support: %s\n"
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" Text Support: %s\n",
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cl->tech->type,
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(cl->tech->devicestate) ? "yes" : "no",
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(cl->tech->indicate) ? "yes" : "no",
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(cl->tech->transfer) ? "yes" : "no",
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(cl->tech->capabilities) ? cl->tech->capabilities : -1,
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(cl->tech->send_digit_begin) ? "yes" : "no",
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(cl->tech->send_digit_end) ? "yes" : "no",
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(cl->tech->send_html) ? "yes" : "no",
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(cl->tech->send_image) ? "yes" : "no",
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(cl->tech->send_text) ? "yes" : "no"
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);
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AST_RWLIST_UNLOCK(&channels);
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return CLI_SUCCESS;
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}
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static struct ast_cli_entry cli_channel[] = {
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AST_CLI_DEFINE(handle_cli_core_show_channeltypes, "List available channel types"),
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AST_CLI_DEFINE(handle_cli_core_show_channeltype, "Give more details on that channel type")
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};
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/*! \brief Checks to see if a channel is needing hang up */
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int ast_check_hangup(struct ast_channel *chan)
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{
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if (chan->_softhangup) /* yes if soft hangup flag set */
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return 1;
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if (!chan->tech_pvt) /* yes if no technology private data */
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return 1;
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if (!chan->whentohangup) /* no if no hangup scheduled */
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return 0;
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if (chan->whentohangup > time(NULL)) /* no if hangup time has not come yet. */
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return 0;
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chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT; /* record event */
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return 1;
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}
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static int ast_check_hangup_locked(struct ast_channel *chan)
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{
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int res;
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ast_channel_lock(chan);
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res = ast_check_hangup(chan);
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ast_channel_unlock(chan);
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return res;
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}
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/*! \brief Initiate system shutdown */
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void ast_begin_shutdown(int hangup)
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{
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struct ast_channel *c;
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shutting_down = 1;
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if (hangup) {
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AST_RWLIST_RDLOCK(&channels);
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AST_RWLIST_TRAVERSE(&channels, c, chan_list)
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ast_softhangup(c, AST_SOFTHANGUP_SHUTDOWN);
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AST_RWLIST_UNLOCK(&channels);
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}
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}
|
|
|
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/*! \brief returns number of active/allocated channels */
|
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int ast_active_channels(void)
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{
|
|
struct ast_channel *c;
|
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int cnt = 0;
|
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AST_RWLIST_RDLOCK(&channels);
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AST_RWLIST_TRAVERSE(&channels, c, chan_list)
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cnt++;
|
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AST_RWLIST_UNLOCK(&channels);
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return cnt;
|
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}
|
|
|
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/*! \brief Cancel a shutdown in progress */
|
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void ast_cancel_shutdown(void)
|
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{
|
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shutting_down = 0;
|
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}
|
|
|
|
/*! \brief Returns non-zero if Asterisk is being shut down */
|
|
int ast_shutting_down(void)
|
|
{
|
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return shutting_down;
|
|
}
|
|
|
|
/*! \brief Set when to hangup channel */
|
|
void ast_channel_setwhentohangup(struct ast_channel *chan, time_t offset)
|
|
{
|
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chan->whentohangup = offset ? time(NULL) + offset : 0;
|
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ast_queue_frame(chan, &ast_null_frame);
|
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return;
|
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}
|
|
|
|
/*! \brief Compare a offset with when to hangup channel */
|
|
int ast_channel_cmpwhentohangup(struct ast_channel *chan, time_t offset)
|
|
{
|
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time_t whentohangup;
|
|
|
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if (!chan->whentohangup)
|
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return (offset == 0) ? 0 : -1;
|
|
|
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if (!offset) /* XXX why is this special? */
|
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return 1;
|
|
|
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whentohangup = offset + time(NULL);
|
|
|
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if (chan->whentohangup < whentohangup)
|
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return 1;
|
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else if (chan->whentohangup == whentohangup)
|
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return 0;
|
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else
|
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return -1;
|
|
}
|
|
|
|
/*! \brief Register a new telephony channel in Asterisk */
|
|
int ast_channel_register(const struct ast_channel_tech *tech)
|
|
{
|
|
struct chanlist *chan;
|
|
|
|
AST_RWLIST_WRLOCK(&channels);
|
|
|
|
AST_LIST_TRAVERSE(&backends, chan, list) {
|
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if (!strcasecmp(tech->type, chan->tech->type)) {
|
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ast_log(LOG_WARNING, "Already have a handler for type '%s'\n", tech->type);
|
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AST_RWLIST_UNLOCK(&channels);
|
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return -1;
|
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}
|
|
}
|
|
|
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if (!(chan = ast_calloc(1, sizeof(*chan)))) {
|
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AST_RWLIST_UNLOCK(&channels);
|
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return -1;
|
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}
|
|
chan->tech = tech;
|
|
AST_LIST_INSERT_HEAD(&backends, chan, list);
|
|
|
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ast_debug(1, "Registered handler for '%s' (%s)\n", chan->tech->type, chan->tech->description);
|
|
|
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ast_verb(2, "Registered channel type '%s' (%s)\n", chan->tech->type, chan->tech->description);
|
|
|
|
AST_RWLIST_UNLOCK(&channels);
|
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return 0;
|
|
}
|
|
|
|
/*! \brief Unregister channel driver */
|
|
void ast_channel_unregister(const struct ast_channel_tech *tech)
|
|
{
|
|
struct chanlist *chan;
|
|
|
|
ast_debug(1, "Unregistering channel type '%s'\n", tech->type);
|
|
|
|
AST_RWLIST_WRLOCK(&channels);
|
|
|
|
AST_LIST_TRAVERSE_SAFE_BEGIN(&backends, chan, list) {
|
|
if (chan->tech == tech) {
|
|
AST_LIST_REMOVE_CURRENT(list);
|
|
ast_free(chan);
|
|
ast_verb(2, "Unregistered channel type '%s'\n", tech->type);
|
|
break;
|
|
}
|
|
}
|
|
AST_LIST_TRAVERSE_SAFE_END;
|
|
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
}
|
|
|
|
/*! \brief Get handle to channel driver based on name */
|
|
const struct ast_channel_tech *ast_get_channel_tech(const char *name)
|
|
{
|
|
struct chanlist *chanls;
|
|
const struct ast_channel_tech *ret = NULL;
|
|
|
|
if (AST_RWLIST_RDLOCK(&channels)) {
|
|
ast_log(LOG_WARNING, "Unable to lock channel tech list\n");
|
|
return NULL;
|
|
}
|
|
|
|
AST_LIST_TRAVERSE(&backends, chanls, list) {
|
|
if (!strcasecmp(name, chanls->tech->type)) {
|
|
ret = chanls->tech;
|
|
break;
|
|
}
|
|
}
|
|
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*! \brief Gives the string form of a given hangup cause */
|
|
const char *ast_cause2str(int cause)
|
|
{
|
|
int x;
|
|
|
|
for (x=0; x < sizeof(causes) / sizeof(causes[0]); x++) {
|
|
if (causes[x].cause == cause)
|
|
return causes[x].desc;
|
|
}
|
|
|
|
return "Unknown";
|
|
}
|
|
|
|
/*! \brief Convert a symbolic hangup cause to number */
|
|
int ast_str2cause(const char *name)
|
|
{
|
|
int x;
|
|
|
|
for (x = 0; x < sizeof(causes) / sizeof(causes[0]); x++)
|
|
if (strncasecmp(causes[x].name, name, strlen(causes[x].name)) == 0)
|
|
return causes[x].cause;
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*! \brief Gives the string form of a given channel state.
|
|
\note This function is not reentrant.
|
|
*/
|
|
const char *ast_state2str(enum ast_channel_state state)
|
|
{
|
|
char *buf;
|
|
|
|
switch (state) {
|
|
case AST_STATE_DOWN:
|
|
return "Down";
|
|
case AST_STATE_RESERVED:
|
|
return "Rsrvd";
|
|
case AST_STATE_OFFHOOK:
|
|
return "OffHook";
|
|
case AST_STATE_DIALING:
|
|
return "Dialing";
|
|
case AST_STATE_RING:
|
|
return "Ring";
|
|
case AST_STATE_RINGING:
|
|
return "Ringing";
|
|
case AST_STATE_UP:
|
|
return "Up";
|
|
case AST_STATE_BUSY:
|
|
return "Busy";
|
|
case AST_STATE_DIALING_OFFHOOK:
|
|
return "Dialing Offhook";
|
|
case AST_STATE_PRERING:
|
|
return "Pre-ring";
|
|
default:
|
|
if (!(buf = ast_threadstorage_get(&state2str_threadbuf, STATE2STR_BUFSIZE)))
|
|
return "Unknown";
|
|
snprintf(buf, STATE2STR_BUFSIZE, "Unknown (%d)", state);
|
|
return buf;
|
|
}
|
|
}
|
|
|
|
/*! \brief Gives the string form of a given transfer capability */
|
|
char *ast_transfercapability2str(int transfercapability)
|
|
{
|
|
switch (transfercapability) {
|
|
case AST_TRANS_CAP_SPEECH:
|
|
return "SPEECH";
|
|
case AST_TRANS_CAP_DIGITAL:
|
|
return "DIGITAL";
|
|
case AST_TRANS_CAP_RESTRICTED_DIGITAL:
|
|
return "RESTRICTED_DIGITAL";
|
|
case AST_TRANS_CAP_3_1K_AUDIO:
|
|
return "3K1AUDIO";
|
|
case AST_TRANS_CAP_DIGITAL_W_TONES:
|
|
return "DIGITAL_W_TONES";
|
|
case AST_TRANS_CAP_VIDEO:
|
|
return "VIDEO";
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
}
|
|
|
|
/*! \brief Pick the best audio codec */
|
|
int ast_best_codec(int fmts)
|
|
{
|
|
/* This just our opinion, expressed in code. We are asked to choose
|
|
the best codec to use, given no information */
|
|
int x;
|
|
static const int prefs[] =
|
|
{
|
|
/*! Okay, ulaw is used by all telephony equipment, so start with it */
|
|
AST_FORMAT_ULAW,
|
|
/*! Unless of course, you're a silly European, so then prefer ALAW */
|
|
AST_FORMAT_ALAW,
|
|
/*! G.722 is better then all below, but not as common as the above... so give ulaw and alaw priority */
|
|
AST_FORMAT_G722,
|
|
/*! Okay, well, signed linear is easy to translate into other stuff */
|
|
AST_FORMAT_SLINEAR,
|
|
/*! G.726 is standard ADPCM, in RFC3551 packing order */
|
|
AST_FORMAT_G726,
|
|
/*! G.726 is standard ADPCM, in AAL2 packing order */
|
|
AST_FORMAT_G726_AAL2,
|
|
/*! ADPCM has great sound quality and is still pretty easy to translate */
|
|
AST_FORMAT_ADPCM,
|
|
/*! Okay, we're down to vocoders now, so pick GSM because it's small and easier to
|
|
translate and sounds pretty good */
|
|
AST_FORMAT_GSM,
|
|
/*! iLBC is not too bad */
|
|
AST_FORMAT_ILBC,
|
|
/*! Speex is free, but computationally more expensive than GSM */
|
|
AST_FORMAT_SPEEX,
|
|
/*! Ick, LPC10 sounds terrible, but at least we have code for it, if you're tacky enough
|
|
to use it */
|
|
AST_FORMAT_LPC10,
|
|
/*! G.729a is faster than 723 and slightly less expensive */
|
|
AST_FORMAT_G729A,
|
|
/*! Down to G.723.1 which is proprietary but at least designed for voice */
|
|
AST_FORMAT_G723_1,
|
|
};
|
|
|
|
/* Strip out video */
|
|
fmts &= AST_FORMAT_AUDIO_MASK;
|
|
|
|
/* Find the first preferred codec in the format given */
|
|
for (x=0; x < (sizeof(prefs) / sizeof(prefs[0]) ); x++)
|
|
if (fmts & prefs[x])
|
|
return prefs[x];
|
|
ast_log(LOG_WARNING, "Don't know any of 0x%x formats\n", fmts);
|
|
return 0;
|
|
}
|
|
|
|
static const struct ast_channel_tech null_tech = {
|
|
.type = "NULL",
|
|
.description = "Null channel (should not see this)",
|
|
};
|
|
|
|
/*! \brief Create a new channel structure */
|
|
struct ast_channel *ast_channel_alloc(int needqueue, int state, const char *cid_num, const char *cid_name, const char *acctcode, const char *exten, const char *context, const int amaflag, const char *name_fmt, ...)
|
|
{
|
|
struct ast_channel *tmp;
|
|
int x;
|
|
int flags;
|
|
struct varshead *headp;
|
|
va_list ap1, ap2;
|
|
|
|
/* If shutting down, don't allocate any new channels */
|
|
if (shutting_down) {
|
|
ast_log(LOG_WARNING, "Channel allocation failed: Refusing due to active shutdown\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!(tmp = ast_calloc(1, sizeof(*tmp))))
|
|
return NULL;
|
|
|
|
if (!(tmp->sched = sched_context_create())) {
|
|
ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n");
|
|
ast_free(tmp);
|
|
return NULL;
|
|
}
|
|
|
|
if ((ast_string_field_init(tmp, 128))) {
|
|
sched_context_destroy(tmp->sched);
|
|
ast_free(tmp);
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef HAVE_EPOLL
|
|
tmp->epfd = epoll_create(25);
|
|
#endif
|
|
|
|
for (x = 0; x < AST_MAX_FDS; x++) {
|
|
tmp->fds[x] = -1;
|
|
#ifdef HAVE_EPOLL
|
|
tmp->epfd_data[x] = NULL;
|
|
#endif
|
|
}
|
|
|
|
#ifdef HAVE_ZAPTEL
|
|
tmp->timingfd = open("/dev/zap/timer", O_RDWR);
|
|
if (tmp->timingfd > -1) {
|
|
/* Check if timing interface supports new
|
|
ping/pong scheme */
|
|
flags = 1;
|
|
if (!ioctl(tmp->timingfd, ZT_TIMERPONG, &flags))
|
|
needqueue = 0;
|
|
}
|
|
#else
|
|
tmp->timingfd = -1;
|
|
#endif
|
|
|
|
if (needqueue) {
|
|
if (pipe(tmp->alertpipe)) {
|
|
ast_log(LOG_WARNING, "Channel allocation failed: Can't create alert pipe!\n");
|
|
ast_string_field_free_memory(tmp);
|
|
ast_free(tmp);
|
|
return NULL;
|
|
} else {
|
|
flags = fcntl(tmp->alertpipe[0], F_GETFL);
|
|
fcntl(tmp->alertpipe[0], F_SETFL, flags | O_NONBLOCK);
|
|
flags = fcntl(tmp->alertpipe[1], F_GETFL);
|
|
fcntl(tmp->alertpipe[1], F_SETFL, flags | O_NONBLOCK);
|
|
}
|
|
} else /* Make sure we've got it done right if they don't */
|
|
tmp->alertpipe[0] = tmp->alertpipe[1] = -1;
|
|
|
|
/* Always watch the alertpipe */
|
|
ast_channel_set_fd(tmp, AST_ALERT_FD, tmp->alertpipe[0]);
|
|
/* And timing pipe */
|
|
ast_channel_set_fd(tmp, AST_TIMING_FD, tmp->timingfd);
|
|
ast_string_field_set(tmp, name, "**Unknown**");
|
|
|
|
/* Initial state */
|
|
tmp->_state = state;
|
|
|
|
tmp->streamid = -1;
|
|
|
|
tmp->fin = global_fin;
|
|
tmp->fout = global_fout;
|
|
|
|
if (ast_strlen_zero(ast_config_AST_SYSTEM_NAME)) {
|
|
ast_string_field_build(tmp, uniqueid, "%li.%d", (long) time(NULL),
|
|
ast_atomic_fetchadd_int(&uniqueint, 1));
|
|
} else {
|
|
ast_string_field_build(tmp, uniqueid, "%s-%li.%d", ast_config_AST_SYSTEM_NAME,
|
|
(long) time(NULL), ast_atomic_fetchadd_int(&uniqueint, 1));
|
|
}
|
|
|
|
tmp->cid.cid_name = ast_strdup(cid_name);
|
|
tmp->cid.cid_num = ast_strdup(cid_num);
|
|
|
|
if (!ast_strlen_zero(name_fmt)) {
|
|
/* Almost every channel is calling this function, and setting the name via the ast_string_field_build() call.
|
|
* And they all use slightly different formats for their name string.
|
|
* This means, to set the name here, we have to accept variable args, and call the string_field_build from here.
|
|
* This means, that the stringfields must have a routine that takes the va_lists directly, and
|
|
* uses them to build the string, instead of forming the va_lists internally from the vararg ... list.
|
|
* This new function was written so this can be accomplished.
|
|
*/
|
|
va_start(ap1, name_fmt);
|
|
va_start(ap2, name_fmt);
|
|
ast_string_field_build_va(tmp, name, name_fmt, ap1, ap2);
|
|
va_end(ap1);
|
|
va_end(ap2);
|
|
|
|
/* and now, since the channel structure is built, and has its name, let's call the
|
|
* manager event generator with this Newchannel event. This is the proper and correct
|
|
* place to make this call, but you sure do have to pass a lot of data into this func
|
|
* to do it here!
|
|
*/
|
|
manager_event(EVENT_FLAG_CALL, "Newchannel",
|
|
"Channel: %s\r\n"
|
|
"State: %s\r\n"
|
|
"CallerIDNum: %s\r\n"
|
|
"CallerIDName: %s\r\n"
|
|
"Uniqueid: %s\r\n",
|
|
tmp->name, ast_state2str(state),
|
|
S_OR(cid_num, "<unknown>"),
|
|
S_OR(cid_name, "<unknown>"),
|
|
tmp->uniqueid);
|
|
}
|
|
|
|
/* Reminder for the future: under what conditions do we NOT want to track cdrs on channels? */
|
|
|
|
/* These 4 variables need to be set up for the cdr_init() to work right */
|
|
if (amaflag)
|
|
tmp->amaflags = amaflag;
|
|
else
|
|
tmp->amaflags = ast_default_amaflags;
|
|
|
|
if (!ast_strlen_zero(acctcode))
|
|
ast_string_field_set(tmp, accountcode, acctcode);
|
|
else
|
|
ast_string_field_set(tmp, accountcode, ast_default_accountcode);
|
|
|
|
if (!ast_strlen_zero(context))
|
|
ast_copy_string(tmp->context, context, sizeof(tmp->context));
|
|
else
|
|
strcpy(tmp->context, "default");
|
|
|
|
if (!ast_strlen_zero(exten))
|
|
ast_copy_string(tmp->exten, exten, sizeof(tmp->exten));
|
|
else
|
|
strcpy(tmp->exten, "s");
|
|
|
|
tmp->priority = 1;
|
|
|
|
tmp->cdr = ast_cdr_alloc();
|
|
ast_cdr_init(tmp->cdr, tmp);
|
|
ast_cdr_start(tmp->cdr);
|
|
|
|
headp = &tmp->varshead;
|
|
AST_LIST_HEAD_INIT_NOLOCK(headp);
|
|
|
|
ast_mutex_init(&tmp->lock_dont_use);
|
|
|
|
AST_LIST_HEAD_INIT_NOLOCK(&tmp->datastores);
|
|
|
|
ast_string_field_set(tmp, language, defaultlanguage);
|
|
|
|
tmp->tech = &null_tech;
|
|
|
|
AST_RWLIST_WRLOCK(&channels);
|
|
AST_RWLIST_INSERT_HEAD(&channels, tmp, chan_list);
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
|
|
return tmp;
|
|
}
|
|
|
|
/*! \brief Queue an outgoing media frame */
|
|
int ast_queue_frame(struct ast_channel *chan, struct ast_frame *fin)
|
|
{
|
|
struct ast_frame *f;
|
|
struct ast_frame *cur;
|
|
int blah = 1;
|
|
int qlen = 0;
|
|
|
|
/* Build us a copy and free the original one */
|
|
if (!(f = ast_frdup(fin))) {
|
|
ast_log(LOG_WARNING, "Unable to duplicate frame\n");
|
|
return -1;
|
|
}
|
|
ast_channel_lock(chan);
|
|
|
|
/* See if the last frame on the queue is a hangup, if so don't queue anything */
|
|
if ((cur = AST_LIST_LAST(&chan->readq)) && (cur->frametype == AST_FRAME_CONTROL) && (cur->subclass == AST_CONTROL_HANGUP)) {
|
|
ast_frfree(f);
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
|
|
/* Count how many frames exist on the queue */
|
|
AST_LIST_TRAVERSE(&chan->readq, cur, frame_list) {
|
|
qlen++;
|
|
}
|
|
|
|
/* Allow up to 96 voice frames outstanding, and up to 128 total frames */
|
|
if (((fin->frametype == AST_FRAME_VOICE) && (qlen > 96)) || (qlen > 128)) {
|
|
if (fin->frametype != AST_FRAME_VOICE) {
|
|
ast_log(LOG_WARNING, "Exceptionally long queue length queuing to %s\n", chan->name);
|
|
CRASH;
|
|
} else {
|
|
ast_debug(1, "Dropping voice to exceptionally long queue on %s\n", chan->name);
|
|
ast_frfree(f);
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
}
|
|
AST_LIST_INSERT_TAIL(&chan->readq, f, frame_list);
|
|
if (chan->alertpipe[1] > -1) {
|
|
if (write(chan->alertpipe[1], &blah, sizeof(blah)) != sizeof(blah))
|
|
ast_log(LOG_WARNING, "Unable to write to alert pipe on %s, frametype/subclass %d/%d (qlen = %d): %s!\n",
|
|
chan->name, f->frametype, f->subclass, qlen, strerror(errno));
|
|
#ifdef HAVE_ZAPTEL
|
|
} else if (chan->timingfd > -1) {
|
|
ioctl(chan->timingfd, ZT_TIMERPING, &blah);
|
|
#endif
|
|
} else if (ast_test_flag(chan, AST_FLAG_BLOCKING)) {
|
|
pthread_kill(chan->blocker, SIGURG);
|
|
}
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief Queue a hangup frame for channel */
|
|
int ast_queue_hangup(struct ast_channel *chan)
|
|
{
|
|
struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP };
|
|
/* Yeah, let's not change a lock-critical value without locking */
|
|
if (!ast_channel_trylock(chan)) {
|
|
chan->_softhangup |= AST_SOFTHANGUP_DEV;
|
|
ast_channel_unlock(chan);
|
|
}
|
|
return ast_queue_frame(chan, &f);
|
|
}
|
|
|
|
/*! \brief Queue a control frame */
|
|
int ast_queue_control(struct ast_channel *chan, enum ast_control_frame_type control)
|
|
{
|
|
struct ast_frame f = { AST_FRAME_CONTROL, };
|
|
|
|
f.subclass = control;
|
|
|
|
return ast_queue_frame(chan, &f);
|
|
}
|
|
|
|
/*! \brief Queue a control frame with payload */
|
|
int ast_queue_control_data(struct ast_channel *chan, enum ast_control_frame_type control,
|
|
const void *data, size_t datalen)
|
|
{
|
|
struct ast_frame f = { AST_FRAME_CONTROL, };
|
|
|
|
f.subclass = control;
|
|
f.data = (void *) data;
|
|
f.datalen = datalen;
|
|
|
|
return ast_queue_frame(chan, &f);
|
|
}
|
|
|
|
/*! \brief Set defer DTMF flag on channel */
|
|
int ast_channel_defer_dtmf(struct ast_channel *chan)
|
|
{
|
|
int pre = 0;
|
|
|
|
if (chan) {
|
|
pre = ast_test_flag(chan, AST_FLAG_DEFER_DTMF);
|
|
ast_set_flag(chan, AST_FLAG_DEFER_DTMF);
|
|
}
|
|
return pre;
|
|
}
|
|
|
|
/*! \brief Unset defer DTMF flag on channel */
|
|
void ast_channel_undefer_dtmf(struct ast_channel *chan)
|
|
{
|
|
if (chan)
|
|
ast_clear_flag(chan, AST_FLAG_DEFER_DTMF);
|
|
}
|
|
|
|
/*!
|
|
* \brief Helper function to find channels.
|
|
*
|
|
* It supports these modes:
|
|
*
|
|
* prev != NULL : get channel next in list after prev
|
|
* name != NULL : get channel with matching name
|
|
* name != NULL && namelen != 0 : get channel whose name starts with prefix
|
|
* exten != NULL : get channel whose exten or macroexten matches
|
|
* context != NULL && exten != NULL : get channel whose context or macrocontext
|
|
*
|
|
* It returns with the channel's lock held. If getting the individual lock fails,
|
|
* unlock and retry quickly up to 10 times, then give up.
|
|
*
|
|
* \note XXX Note that this code has cost O(N) because of the need to verify
|
|
* that the object is still on the global list.
|
|
*
|
|
* \note XXX also note that accessing fields (e.g. c->name in ast_log())
|
|
* can only be done with the lock held or someone could delete the
|
|
* object while we work on it. This causes some ugliness in the code.
|
|
* Note that removing the first ast_log() may be harmful, as it would
|
|
* shorten the retry period and possibly cause failures.
|
|
* We should definitely go for a better scheme that is deadlock-free.
|
|
*/
|
|
static struct ast_channel *channel_find_locked(const struct ast_channel *prev,
|
|
const char *name, const int namelen,
|
|
const char *context, const char *exten)
|
|
{
|
|
const char *msg = prev ? "deadlock" : "initial deadlock";
|
|
int retries;
|
|
struct ast_channel *c;
|
|
const struct ast_channel *_prev = prev;
|
|
|
|
for (retries = 0; retries < 10; retries++) {
|
|
int done;
|
|
AST_RWLIST_RDLOCK(&channels);
|
|
AST_RWLIST_TRAVERSE(&channels, c, chan_list) {
|
|
prev = _prev;
|
|
if (prev) { /* look for next item */
|
|
if (c != prev) /* not this one */
|
|
continue;
|
|
/* found, prepare to return c->next */
|
|
if ((c = AST_RWLIST_NEXT(c, chan_list)) == NULL) break;
|
|
/* If prev was the last item on the channel list, then we just
|
|
* want to return NULL, instead of trying to deref NULL in the
|
|
* next section.
|
|
*/
|
|
prev = NULL;
|
|
/* We want prev to be NULL in case we end up doing more searching through
|
|
* the channel list to find the channel (ie: name searching). If we didn't
|
|
* set this to NULL the logic would just blow up
|
|
* XXX Need a better explanation for this ...
|
|
*/
|
|
}
|
|
if (name) { /* want match by name */
|
|
if ((!namelen && strcasecmp(c->name, name)) ||
|
|
(namelen && strncasecmp(c->name, name, namelen)))
|
|
continue; /* name match failed */
|
|
} else if (exten) {
|
|
if (context && strcasecmp(c->context, context) &&
|
|
strcasecmp(c->macrocontext, context))
|
|
continue; /* context match failed */
|
|
if (strcasecmp(c->exten, exten) &&
|
|
strcasecmp(c->macroexten, exten))
|
|
continue; /* exten match failed */
|
|
}
|
|
/* if we get here, c points to the desired record */
|
|
break;
|
|
}
|
|
/* exit if chan not found or mutex acquired successfully */
|
|
/* this is slightly unsafe, as we _should_ hold the lock to access c->name */
|
|
done = c == NULL || ast_channel_trylock(c) == 0;
|
|
if (!done) {
|
|
ast_debug(1, "Avoiding %s for channel '%p'\n", msg, c);
|
|
if (retries == 9) {
|
|
/* We are about to fail due to a deadlock, so report this
|
|
* while we still have the list lock.
|
|
*/
|
|
ast_debug(1, "Failure, could not lock '%p' after %d retries!\n", c, retries);
|
|
/* As we have deadlocked, we will skip this channel and
|
|
* see if there is another match.
|
|
* NOTE: No point doing this for a full-name match,
|
|
* as there can be no more matches.
|
|
*/
|
|
if (!(name && !namelen)) {
|
|
prev = c;
|
|
retries = -1;
|
|
}
|
|
}
|
|
}
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
if (done)
|
|
return c;
|
|
/* If we reach this point we basically tried to lock a channel and failed. Instead of
|
|
* starting from the beginning of the list we can restore our saved pointer to the previous
|
|
* channel and start from there.
|
|
*/
|
|
prev = _prev;
|
|
usleep(1); /* give other threads a chance before retrying */
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*! \brief Browse channels in use */
|
|
struct ast_channel *ast_channel_walk_locked(const struct ast_channel *prev)
|
|
{
|
|
return channel_find_locked(prev, NULL, 0, NULL, NULL);
|
|
}
|
|
|
|
/*! \brief Get channel by name and lock it */
|
|
struct ast_channel *ast_get_channel_by_name_locked(const char *name)
|
|
{
|
|
return channel_find_locked(NULL, name, 0, NULL, NULL);
|
|
}
|
|
|
|
/*! \brief Get channel by name prefix and lock it */
|
|
struct ast_channel *ast_get_channel_by_name_prefix_locked(const char *name, const int namelen)
|
|
{
|
|
return channel_find_locked(NULL, name, namelen, NULL, NULL);
|
|
}
|
|
|
|
/*! \brief Get next channel by name prefix and lock it */
|
|
struct ast_channel *ast_walk_channel_by_name_prefix_locked(const struct ast_channel *chan, const char *name,
|
|
const int namelen)
|
|
{
|
|
return channel_find_locked(chan, name, namelen, NULL, NULL);
|
|
}
|
|
|
|
/*! \brief Get channel by exten (and optionally context) and lock it */
|
|
struct ast_channel *ast_get_channel_by_exten_locked(const char *exten, const char *context)
|
|
{
|
|
return channel_find_locked(NULL, NULL, 0, context, exten);
|
|
}
|
|
|
|
/*! \brief Get next channel by exten (and optionally context) and lock it */
|
|
struct ast_channel *ast_walk_channel_by_exten_locked(const struct ast_channel *chan, const char *exten,
|
|
const char *context)
|
|
{
|
|
return channel_find_locked(chan, NULL, 0, context, exten);
|
|
}
|
|
|
|
/*! \brief Wait, look for hangups and condition arg */
|
|
int ast_safe_sleep_conditional(struct ast_channel *chan, int ms, int (*cond)(void*), void *data)
|
|
{
|
|
struct ast_frame *f;
|
|
|
|
while (ms > 0) {
|
|
if (cond && ((*cond)(data) == 0))
|
|
return 0;
|
|
ms = ast_waitfor(chan, ms);
|
|
if (ms < 0)
|
|
return -1;
|
|
if (ms > 0) {
|
|
f = ast_read(chan);
|
|
if (!f)
|
|
return -1;
|
|
ast_frfree(f);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief Wait, look for hangups */
|
|
int ast_safe_sleep(struct ast_channel *chan, int ms)
|
|
{
|
|
return ast_safe_sleep_conditional(chan, ms, NULL, NULL);
|
|
}
|
|
|
|
static void free_cid(struct ast_callerid *cid)
|
|
{
|
|
if (cid->cid_dnid)
|
|
ast_free(cid->cid_dnid);
|
|
if (cid->cid_num)
|
|
ast_free(cid->cid_num);
|
|
if (cid->cid_name)
|
|
ast_free(cid->cid_name);
|
|
if (cid->cid_ani)
|
|
ast_free(cid->cid_ani);
|
|
if (cid->cid_rdnis)
|
|
ast_free(cid->cid_rdnis);
|
|
cid->cid_dnid = cid->cid_num = cid->cid_name = cid->cid_ani = cid->cid_rdnis = NULL;
|
|
}
|
|
|
|
/*! \brief Free a channel structure */
|
|
void ast_channel_free(struct ast_channel *chan)
|
|
{
|
|
int fd;
|
|
#ifdef HAVE_EPOLL
|
|
int i;
|
|
#endif
|
|
struct ast_var_t *vardata;
|
|
struct ast_frame *f;
|
|
struct varshead *headp;
|
|
struct ast_datastore *datastore = NULL;
|
|
char name[AST_CHANNEL_NAME];
|
|
|
|
headp=&chan->varshead;
|
|
|
|
AST_RWLIST_WRLOCK(&channels);
|
|
if (!AST_RWLIST_REMOVE(&channels, chan, chan_list)) {
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
ast_log(LOG_ERROR, "Unable to find channel in list to free. Assuming it has already been done.\n");
|
|
}
|
|
/* Lock and unlock the channel just to be sure nobody
|
|
has it locked still */
|
|
ast_channel_lock(chan);
|
|
ast_channel_unlock(chan);
|
|
if (chan->tech_pvt) {
|
|
ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name);
|
|
ast_free(chan->tech_pvt);
|
|
}
|
|
|
|
if (chan->sched)
|
|
sched_context_destroy(chan->sched);
|
|
|
|
ast_copy_string(name, chan->name, sizeof(name));
|
|
|
|
/* Stop monitoring */
|
|
if (chan->monitor)
|
|
chan->monitor->stop( chan, 0 );
|
|
|
|
/* If there is native format music-on-hold state, free it */
|
|
if (chan->music_state)
|
|
ast_moh_cleanup(chan);
|
|
|
|
/* Free translators */
|
|
if (chan->readtrans)
|
|
ast_translator_free_path(chan->readtrans);
|
|
if (chan->writetrans)
|
|
ast_translator_free_path(chan->writetrans);
|
|
if (chan->pbx)
|
|
ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name);
|
|
free_cid(&chan->cid);
|
|
ast_mutex_destroy(&chan->lock_dont_use);
|
|
/* Close pipes if appropriate */
|
|
if ((fd = chan->alertpipe[0]) > -1)
|
|
close(fd);
|
|
if ((fd = chan->alertpipe[1]) > -1)
|
|
close(fd);
|
|
if ((fd = chan->timingfd) > -1)
|
|
close(fd);
|
|
#ifdef HAVE_EPOLL
|
|
for (i = 0; i < AST_MAX_FDS; i++) {
|
|
if (chan->epfd_data[i])
|
|
free(chan->epfd_data[i]);
|
|
}
|
|
close(chan->epfd);
|
|
#endif
|
|
while ((f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list)))
|
|
ast_frfree(f);
|
|
|
|
/* Get rid of each of the data stores on the channel */
|
|
while ((datastore = AST_LIST_REMOVE_HEAD(&chan->datastores, entry)))
|
|
/* Free the data store */
|
|
ast_channel_datastore_free(datastore);
|
|
AST_LIST_HEAD_INIT_NOLOCK(&chan->datastores);
|
|
|
|
/* loop over the variables list, freeing all data and deleting list items */
|
|
/* no need to lock the list, as the channel is already locked */
|
|
|
|
while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
|
|
ast_var_delete(vardata);
|
|
|
|
ast_app_group_discard(chan);
|
|
|
|
/* Destroy the jitterbuffer */
|
|
ast_jb_destroy(chan);
|
|
|
|
ast_string_field_free_memory(chan);
|
|
ast_free(chan);
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
|
|
ast_device_state_changed_literal(name);
|
|
}
|
|
|
|
struct ast_datastore *ast_channel_datastore_alloc(const struct ast_datastore_info *info, const char *uid)
|
|
{
|
|
struct ast_datastore *datastore = NULL;
|
|
|
|
/* Make sure we at least have type so we can identify this */
|
|
if (!info) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Allocate memory for datastore and clear it */
|
|
datastore = ast_calloc(1, sizeof(*datastore));
|
|
if (!datastore) {
|
|
return NULL;
|
|
}
|
|
|
|
datastore->info = info;
|
|
|
|
datastore->uid = ast_strdup(uid);
|
|
|
|
return datastore;
|
|
}
|
|
|
|
int ast_channel_datastore_free(struct ast_datastore *datastore)
|
|
{
|
|
int res = 0;
|
|
|
|
/* Using the destroy function (if present) destroy the data */
|
|
if (datastore->info->destroy != NULL && datastore->data != NULL) {
|
|
datastore->info->destroy(datastore->data);
|
|
datastore->data = NULL;
|
|
}
|
|
|
|
/* Free allocated UID memory */
|
|
if (datastore->uid != NULL) {
|
|
ast_free((void *) datastore->uid);
|
|
datastore->uid = NULL;
|
|
}
|
|
|
|
/* Finally free memory used by ourselves */
|
|
ast_free(datastore);
|
|
|
|
return res;
|
|
}
|
|
|
|
int ast_channel_datastore_inherit(struct ast_channel *from, struct ast_channel *to)
|
|
{
|
|
struct ast_datastore *datastore = NULL, *datastore2;
|
|
|
|
AST_LIST_TRAVERSE(&from->datastores, datastore, entry) {
|
|
if (datastore->inheritance > 0) {
|
|
datastore2 = ast_channel_datastore_alloc(datastore->info, datastore->uid);
|
|
if (datastore2) {
|
|
datastore2->data = datastore->info->duplicate(datastore->data);
|
|
datastore2->inheritance = datastore->inheritance == DATASTORE_INHERIT_FOREVER ? DATASTORE_INHERIT_FOREVER : datastore->inheritance - 1;
|
|
AST_LIST_INSERT_TAIL(&to->datastores, datastore2, entry);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ast_channel_datastore_add(struct ast_channel *chan, struct ast_datastore *datastore)
|
|
{
|
|
int res = 0;
|
|
|
|
AST_LIST_INSERT_HEAD(&chan->datastores, datastore, entry);
|
|
|
|
return res;
|
|
}
|
|
|
|
int ast_channel_datastore_remove(struct ast_channel *chan, struct ast_datastore *datastore)
|
|
{
|
|
return AST_LIST_REMOVE(&chan->datastores, datastore, entry) ? 0 : -1;
|
|
}
|
|
|
|
struct ast_datastore *ast_channel_datastore_find(struct ast_channel *chan, const struct ast_datastore_info *info, const char *uid)
|
|
{
|
|
struct ast_datastore *datastore = NULL;
|
|
|
|
if (info == NULL)
|
|
return NULL;
|
|
|
|
AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->datastores, datastore, entry) {
|
|
if (datastore->info == info) {
|
|
if (uid != NULL && datastore->uid != NULL) {
|
|
if (!strcasecmp(uid, datastore->uid)) {
|
|
/* Matched by type AND uid */
|
|
break;
|
|
}
|
|
} else {
|
|
/* Matched by type at least */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
AST_LIST_TRAVERSE_SAFE_END
|
|
|
|
return datastore;
|
|
}
|
|
|
|
/*! Set the file descriptor on the channel */
|
|
void ast_channel_set_fd(struct ast_channel *chan, int which, int fd)
|
|
{
|
|
#ifdef HAVE_EPOLL
|
|
struct epoll_event ev;
|
|
struct ast_epoll_data *aed = NULL;
|
|
|
|
if (chan->fds[which] > -1) {
|
|
epoll_ctl(chan->epfd, EPOLL_CTL_DEL, chan->fds[which], &ev);
|
|
aed = chan->epfd_data[which];
|
|
}
|
|
|
|
/* If this new fd is valid, add it to the epoll */
|
|
if (fd > -1) {
|
|
if (!aed && (!(aed = ast_calloc(1, sizeof(*aed)))))
|
|
return;
|
|
|
|
chan->epfd_data[which] = aed;
|
|
aed->chan = chan;
|
|
aed->which = which;
|
|
|
|
ev.events = EPOLLIN | EPOLLPRI | EPOLLERR | EPOLLHUP;
|
|
ev.data.ptr = aed;
|
|
epoll_ctl(chan->epfd, EPOLL_CTL_ADD, fd, &ev);
|
|
} else if (aed) {
|
|
/* We don't have to keep around this epoll data structure now */
|
|
free(aed);
|
|
chan->epfd_data[which] = NULL;
|
|
}
|
|
#endif
|
|
chan->fds[which] = fd;
|
|
return;
|
|
}
|
|
|
|
/*! Add a channel to an optimized waitfor */
|
|
void ast_poll_channel_add(struct ast_channel *chan0, struct ast_channel *chan1)
|
|
{
|
|
#ifdef HAVE_EPOLL
|
|
struct epoll_event ev;
|
|
int i = 0;
|
|
|
|
if (chan0->epfd == -1)
|
|
return;
|
|
|
|
/* Iterate through the file descriptors on chan1, adding them to chan0 */
|
|
for (i = 0; i < AST_MAX_FDS; i++) {
|
|
if (chan1->fds[i] == -1)
|
|
continue;
|
|
ev.events = EPOLLIN | EPOLLPRI | EPOLLERR | EPOLLHUP;
|
|
ev.data.ptr = chan1->epfd_data[i];
|
|
epoll_ctl(chan0->epfd, EPOLL_CTL_ADD, chan1->fds[i], &ev);
|
|
}
|
|
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/*! Delete a channel from an optimized waitfor */
|
|
void ast_poll_channel_del(struct ast_channel *chan0, struct ast_channel *chan1)
|
|
{
|
|
#ifdef HAVE_EPOLL
|
|
struct epoll_event ev;
|
|
int i = 0;
|
|
|
|
if (chan0->epfd == -1)
|
|
return;
|
|
|
|
for (i = 0; i < AST_MAX_FDS; i++) {
|
|
if (chan1->fds[i] == -1)
|
|
continue;
|
|
epoll_ctl(chan0->epfd, EPOLL_CTL_DEL, chan1->fds[i], &ev);
|
|
}
|
|
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/*! \brief Softly hangup a channel, don't lock */
|
|
int ast_softhangup_nolock(struct ast_channel *chan, int cause)
|
|
{
|
|
ast_debug(1, "Soft-Hanging up channel '%s'\n", chan->name);
|
|
/* Inform channel driver that we need to be hung up, if it cares */
|
|
chan->_softhangup |= cause;
|
|
ast_queue_frame(chan, &ast_null_frame);
|
|
/* Interrupt any poll call or such */
|
|
if (ast_test_flag(chan, AST_FLAG_BLOCKING))
|
|
pthread_kill(chan->blocker, SIGURG);
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief Softly hangup a channel, lock */
|
|
int ast_softhangup(struct ast_channel *chan, int cause)
|
|
{
|
|
int res;
|
|
ast_channel_lock(chan);
|
|
res = ast_softhangup_nolock(chan, cause);
|
|
ast_channel_unlock(chan);
|
|
return res;
|
|
}
|
|
|
|
static void free_translation(struct ast_channel *clone)
|
|
{
|
|
if (clone->writetrans)
|
|
ast_translator_free_path(clone->writetrans);
|
|
if (clone->readtrans)
|
|
ast_translator_free_path(clone->readtrans);
|
|
clone->writetrans = NULL;
|
|
clone->readtrans = NULL;
|
|
clone->rawwriteformat = clone->nativeformats;
|
|
clone->rawreadformat = clone->nativeformats;
|
|
}
|
|
|
|
/*! \brief Hangup a channel */
|
|
int ast_hangup(struct ast_channel *chan)
|
|
{
|
|
int res = 0;
|
|
struct ast_cdr *cdr = NULL;
|
|
|
|
/* Don't actually hang up a channel that will masquerade as someone else, or
|
|
if someone is going to masquerade as us */
|
|
ast_channel_lock(chan);
|
|
|
|
if (chan->audiohooks) {
|
|
ast_audiohook_detach_list(chan->audiohooks);
|
|
chan->audiohooks = NULL;
|
|
}
|
|
|
|
ast_autoservice_stop(chan);
|
|
|
|
if (chan->masq) {
|
|
if (ast_do_masquerade(chan))
|
|
ast_log(LOG_WARNING, "Failed to perform masquerade\n");
|
|
}
|
|
|
|
if (chan->masq) {
|
|
ast_log(LOG_WARNING, "%s getting hung up, but someone is trying to masq into us?!?\n", chan->name);
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
/* If this channel is one which will be masqueraded into something,
|
|
mark it as a zombie already, so we know to free it later */
|
|
if (chan->masqr) {
|
|
ast_set_flag(chan, AST_FLAG_ZOMBIE);
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
free_translation(chan);
|
|
/* Close audio stream */
|
|
if (chan->stream) {
|
|
ast_closestream(chan->stream);
|
|
chan->stream = NULL;
|
|
}
|
|
/* Close video stream */
|
|
if (chan->vstream) {
|
|
ast_closestream(chan->vstream);
|
|
chan->vstream = NULL;
|
|
}
|
|
if (chan->sched) {
|
|
sched_context_destroy(chan->sched);
|
|
chan->sched = NULL;
|
|
}
|
|
|
|
if (chan->generatordata) /* Clear any tone stuff remaining */
|
|
if (chan->generator && chan->generator->release)
|
|
chan->generator->release(chan, chan->generatordata);
|
|
chan->generatordata = NULL;
|
|
chan->generator = NULL;
|
|
if (chan->cdr) { /* End the CDR if it hasn't already */
|
|
ast_cdr_end(chan->cdr);
|
|
cdr = chan->cdr;
|
|
chan->cdr = NULL;
|
|
}
|
|
if (ast_test_flag(chan, AST_FLAG_BLOCKING)) {
|
|
ast_log(LOG_WARNING, "Hard hangup called by thread %ld on %s, while fd "
|
|
"is blocked by thread %ld in procedure %s! Expect a failure\n",
|
|
(long)pthread_self(), chan->name, (long)chan->blocker, chan->blockproc);
|
|
CRASH;
|
|
}
|
|
if (!ast_test_flag(chan, AST_FLAG_ZOMBIE)) {
|
|
ast_debug(1, "Hanging up channel '%s'\n", chan->name);
|
|
if (chan->tech->hangup)
|
|
res = chan->tech->hangup(chan);
|
|
} else {
|
|
ast_debug(1, "Hanging up zombie '%s'\n", chan->name);
|
|
}
|
|
|
|
ast_channel_unlock(chan);
|
|
manager_event(EVENT_FLAG_CALL, "Hangup",
|
|
"Channel: %s\r\n"
|
|
"Uniqueid: %s\r\n"
|
|
"CallerIDNum: %s\r\n"
|
|
"CallerIDName: %s\r\n"
|
|
"Cause: %d\r\n"
|
|
"Cause-txt: %s\r\n",
|
|
chan->name,
|
|
chan->uniqueid,
|
|
S_OR(chan->cid.cid_num, "<unknown>"),
|
|
S_OR(chan->cid.cid_name, "<unknown>"),
|
|
chan->hangupcause,
|
|
ast_cause2str(chan->hangupcause)
|
|
);
|
|
ast_channel_free(chan);
|
|
|
|
if (cdr)
|
|
ast_cdr_detach(cdr);
|
|
|
|
return res;
|
|
}
|
|
|
|
int __ast_answer(struct ast_channel *chan, unsigned int delay)
|
|
{
|
|
int res = 0;
|
|
|
|
ast_channel_lock(chan);
|
|
|
|
/* You can't answer an outbound call */
|
|
if (ast_test_flag(chan, AST_FLAG_OUTGOING)) {
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) {
|
|
ast_channel_unlock(chan);
|
|
return -1;
|
|
}
|
|
|
|
switch (chan->_state) {
|
|
case AST_STATE_RINGING:
|
|
case AST_STATE_RING:
|
|
if (chan->tech->answer)
|
|
res = chan->tech->answer(chan);
|
|
ast_setstate(chan, AST_STATE_UP);
|
|
ast_cdr_answer(chan->cdr);
|
|
ast_channel_unlock(chan);
|
|
if (delay)
|
|
ast_safe_sleep(chan, delay);
|
|
return res;
|
|
break;
|
|
case AST_STATE_UP:
|
|
ast_cdr_answer(chan->cdr);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ast_channel_unlock(chan);
|
|
|
|
return res;
|
|
}
|
|
|
|
int ast_answer(struct ast_channel *chan)
|
|
{
|
|
return __ast_answer(chan, 500);
|
|
}
|
|
|
|
void ast_deactivate_generator(struct ast_channel *chan)
|
|
{
|
|
ast_channel_lock(chan);
|
|
if (chan->generatordata) {
|
|
if (chan->generator && chan->generator->release)
|
|
chan->generator->release(chan, chan->generatordata);
|
|
chan->generatordata = NULL;
|
|
chan->generator = NULL;
|
|
ast_channel_set_fd(chan, AST_GENERATOR_FD, -1);
|
|
ast_clear_flag(chan, AST_FLAG_WRITE_INT);
|
|
ast_settimeout(chan, 0, NULL, NULL);
|
|
}
|
|
ast_channel_unlock(chan);
|
|
}
|
|
|
|
static int generator_force(const void *data)
|
|
{
|
|
/* Called if generator doesn't have data */
|
|
void *tmp;
|
|
int res;
|
|
int (*generate)(struct ast_channel *chan, void *tmp, int datalen, int samples);
|
|
struct ast_channel *chan = (struct ast_channel *)data;
|
|
tmp = chan->generatordata;
|
|
chan->generatordata = NULL;
|
|
generate = chan->generator->generate;
|
|
res = generate(chan, tmp, 0, 160);
|
|
chan->generatordata = tmp;
|
|
if (res) {
|
|
ast_debug(1, "Auto-deactivating generator\n");
|
|
ast_deactivate_generator(chan);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ast_activate_generator(struct ast_channel *chan, struct ast_generator *gen, void *params)
|
|
{
|
|
int res = 0;
|
|
|
|
ast_channel_lock(chan);
|
|
|
|
if (chan->generatordata) {
|
|
if (chan->generator && chan->generator->release)
|
|
chan->generator->release(chan, chan->generatordata);
|
|
chan->generatordata = NULL;
|
|
}
|
|
|
|
ast_prod(chan);
|
|
if (gen->alloc && !(chan->generatordata = gen->alloc(chan, params))) {
|
|
res = -1;
|
|
}
|
|
|
|
if (!res) {
|
|
ast_settimeout(chan, 160, generator_force, chan);
|
|
chan->generator = gen;
|
|
}
|
|
|
|
ast_channel_unlock(chan);
|
|
|
|
return res;
|
|
}
|
|
|
|
/*! \brief Wait for x amount of time on a file descriptor to have input. */
|
|
int ast_waitfor_n_fd(int *fds, int n, int *ms, int *exception)
|
|
{
|
|
int winner = -1;
|
|
ast_waitfor_nandfds(NULL, 0, fds, n, exception, &winner, ms);
|
|
return winner;
|
|
}
|
|
|
|
/*! \brief Wait for x amount of time on a file descriptor to have input. */
|
|
#ifdef HAVE_EPOLL
|
|
static struct ast_channel *ast_waitfor_nandfds_classic(struct ast_channel **c, int n, int *fds, int nfds,
|
|
int *exception, int *outfd, int *ms)
|
|
#else
|
|
struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds, int nfds,
|
|
int *exception, int *outfd, int *ms)
|
|
#endif
|
|
{
|
|
struct timeval start = { 0 , 0 };
|
|
struct pollfd *pfds;
|
|
int res;
|
|
long rms;
|
|
int x, y, max;
|
|
int sz;
|
|
time_t now = 0;
|
|
long whentohangup = 0, diff;
|
|
struct ast_channel *winner = NULL;
|
|
struct fdmap {
|
|
int chan;
|
|
int fdno;
|
|
} *fdmap;
|
|
|
|
sz = n * AST_MAX_FDS + nfds;
|
|
pfds = alloca(sizeof(*pfds) * sz);
|
|
fdmap = alloca(sizeof(*fdmap) * sz);
|
|
|
|
if (outfd)
|
|
*outfd = -99999;
|
|
if (exception)
|
|
*exception = 0;
|
|
|
|
/* Perform any pending masquerades */
|
|
for (x = 0; x < n; x++) {
|
|
ast_channel_lock(c[x]);
|
|
if (c[x]->masq && ast_do_masquerade(c[x])) {
|
|
ast_log(LOG_WARNING, "Masquerade failed\n");
|
|
*ms = -1;
|
|
ast_channel_unlock(c[x]);
|
|
return NULL;
|
|
}
|
|
if (c[x]->whentohangup) {
|
|
if (!whentohangup)
|
|
time(&now);
|
|
diff = c[x]->whentohangup - now;
|
|
if (diff < 1) {
|
|
/* Should already be hungup */
|
|
c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT;
|
|
ast_channel_unlock(c[x]);
|
|
return c[x];
|
|
}
|
|
if (!whentohangup || (diff < whentohangup))
|
|
whentohangup = diff;
|
|
}
|
|
ast_channel_unlock(c[x]);
|
|
}
|
|
/* Wait full interval */
|
|
rms = *ms;
|
|
if (whentohangup) {
|
|
rms = whentohangup * 1000; /* timeout in milliseconds */
|
|
if (*ms >= 0 && *ms < rms) /* original *ms still smaller */
|
|
rms = *ms;
|
|
}
|
|
/*
|
|
* Build the pollfd array, putting the channels' fds first,
|
|
* followed by individual fds. Order is important because
|
|
* individual fd's must have priority over channel fds.
|
|
*/
|
|
max = 0;
|
|
for (x = 0; x < n; x++) {
|
|
for (y = 0; y < AST_MAX_FDS; y++) {
|
|
fdmap[max].fdno = y; /* fd y is linked to this pfds */
|
|
fdmap[max].chan = x; /* channel x is linked to this pfds */
|
|
max += ast_add_fd(&pfds[max], c[x]->fds[y]);
|
|
}
|
|
CHECK_BLOCKING(c[x]);
|
|
}
|
|
/* Add the individual fds */
|
|
for (x = 0; x < nfds; x++) {
|
|
fdmap[max].chan = -1;
|
|
max += ast_add_fd(&pfds[max], fds[x]);
|
|
}
|
|
|
|
if (*ms > 0)
|
|
start = ast_tvnow();
|
|
|
|
if (sizeof(int) == 4) { /* XXX fix timeout > 600000 on linux x86-32 */
|
|
do {
|
|
int kbrms = rms;
|
|
if (kbrms > 600000)
|
|
kbrms = 600000;
|
|
res = poll(pfds, max, kbrms);
|
|
if (!res)
|
|
rms -= kbrms;
|
|
} while (!res && (rms > 0));
|
|
} else {
|
|
res = poll(pfds, max, rms);
|
|
}
|
|
for (x = 0; x < n; x++)
|
|
ast_clear_flag(c[x], AST_FLAG_BLOCKING);
|
|
if (res < 0) { /* Simulate a timeout if we were interrupted */
|
|
if (errno != EINTR)
|
|
*ms = -1;
|
|
return NULL;
|
|
}
|
|
if (whentohangup) { /* if we have a timeout, check who expired */
|
|
time(&now);
|
|
for (x = 0; x < n; x++) {
|
|
if (c[x]->whentohangup && now >= c[x]->whentohangup) {
|
|
c[x]->_softhangup |= AST_SOFTHANGUP_TIMEOUT;
|
|
if (winner == NULL)
|
|
winner = c[x];
|
|
}
|
|
}
|
|
}
|
|
if (res == 0) { /* no fd ready, reset timeout and done */
|
|
*ms = 0; /* XXX use 0 since we may not have an exact timeout. */
|
|
return winner;
|
|
}
|
|
/*
|
|
* Then check if any channel or fd has a pending event.
|
|
* Remember to check channels first and fds last, as they
|
|
* must have priority on setting 'winner'
|
|
*/
|
|
for (x = 0; x < max; x++) {
|
|
res = pfds[x].revents;
|
|
if (res == 0)
|
|
continue;
|
|
if (fdmap[x].chan >= 0) { /* this is a channel */
|
|
winner = c[fdmap[x].chan]; /* override previous winners */
|
|
if (res & POLLPRI)
|
|
ast_set_flag(winner, AST_FLAG_EXCEPTION);
|
|
else
|
|
ast_clear_flag(winner, AST_FLAG_EXCEPTION);
|
|
winner->fdno = fdmap[x].fdno;
|
|
} else { /* this is an fd */
|
|
if (outfd)
|
|
*outfd = pfds[x].fd;
|
|
if (exception)
|
|
*exception = (res & POLLPRI) ? -1 : 0;
|
|
winner = NULL;
|
|
}
|
|
}
|
|
if (*ms > 0) {
|
|
*ms -= ast_tvdiff_ms(ast_tvnow(), start);
|
|
if (*ms < 0)
|
|
*ms = 0;
|
|
}
|
|
return winner;
|
|
}
|
|
|
|
#ifdef HAVE_EPOLL
|
|
static struct ast_channel *ast_waitfor_nandfds_simple(struct ast_channel *chan, int *ms)
|
|
{
|
|
struct timeval start = { 0 , 0 };
|
|
int res = 0;
|
|
struct epoll_event ev[1];
|
|
long whentohangup = 0, rms = *ms;
|
|
time_t now;
|
|
struct ast_channel *winner = NULL;
|
|
struct ast_epoll_data *aed = NULL;
|
|
|
|
ast_channel_lock(chan);
|
|
|
|
/* See if this channel needs to be masqueraded */
|
|
if (chan->masq && ast_do_masquerade(chan)) {
|
|
ast_log(LOG_WARNING, "Failed to perform masquerade on %s\n", chan->name);
|
|
*ms = -1;
|
|
ast_channel_unlock(chan);
|
|
return NULL;
|
|
}
|
|
|
|
/* Figure out their timeout */
|
|
if (chan->whentohangup) {
|
|
time(&now);
|
|
if ((whentohangup = chan->whentohangup - now) < 1) {
|
|
/* They should already be hungup! */
|
|
chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT;
|
|
ast_channel_unlock(chan);
|
|
return NULL;
|
|
}
|
|
/* If this value is smaller then the current one... make it priority */
|
|
whentohangup *= 1000;
|
|
if (rms > whentohangup)
|
|
rms = whentohangup;
|
|
}
|
|
|
|
ast_channel_unlock(chan);
|
|
|
|
/* Time to make this channel block... */
|
|
CHECK_BLOCKING(chan);
|
|
|
|
if (*ms > 0)
|
|
start = ast_tvnow();
|
|
|
|
/* We don't have to add any file descriptors... they are already added, we just have to wait! */
|
|
res = epoll_wait(chan->epfd, ev, 1, rms);
|
|
|
|
/* Stop blocking */
|
|
ast_clear_flag(chan, AST_FLAG_BLOCKING);
|
|
|
|
/* Simulate a timeout if we were interrupted */
|
|
if (res < 0) {
|
|
if (errno != EINTR)
|
|
*ms = -1;
|
|
return NULL;
|
|
}
|
|
|
|
/* If this channel has a timeout see if it expired */
|
|
if (chan->whentohangup) {
|
|
time(&now);
|
|
if (now >= chan->whentohangup) {
|
|
chan->_softhangup |= AST_SOFTHANGUP_TIMEOUT;
|
|
winner = chan;
|
|
}
|
|
}
|
|
|
|
/* No fd ready, reset timeout and be done for now */
|
|
if (!res) {
|
|
*ms = 0;
|
|
return winner;
|
|
}
|
|
|
|
/* See what events are pending */
|
|
aed = ev[0].data.ptr;
|
|
chan->fdno = aed->which;
|
|
if (ev[0].events & EPOLLPRI)
|
|
ast_set_flag(chan, AST_FLAG_EXCEPTION);
|
|
else
|
|
ast_clear_flag(chan, AST_FLAG_EXCEPTION);
|
|
|
|
if (*ms > 0) {
|
|
*ms -= ast_tvdiff_ms(ast_tvnow(), start);
|
|
if (*ms < 0)
|
|
*ms = 0;
|
|
}
|
|
|
|
return chan;
|
|
}
|
|
|
|
static struct ast_channel *ast_waitfor_nandfds_complex(struct ast_channel **c, int n, int *ms)
|
|
{
|
|
struct timeval start = { 0 , 0 };
|
|
int res = 0, i;
|
|
struct epoll_event ev[25] = { { 0, } };
|
|
long whentohangup = 0, diff, rms = *ms;
|
|
time_t now;
|
|
struct ast_channel *winner = NULL;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
ast_channel_lock(c[i]);
|
|
if (c[i]->masq && ast_do_masquerade(c[i])) {
|
|
ast_log(LOG_WARNING, "Masquerade failed\n");
|
|
*ms = -1;
|
|
ast_channel_unlock(c[i]);
|
|
return NULL;
|
|
}
|
|
if (c[i]->whentohangup) {
|
|
if (!whentohangup)
|
|
time(&now);
|
|
if ((diff = c[i]->whentohangup - now) < 1) {
|
|
c[i]->_softhangup |= AST_SOFTHANGUP_TIMEOUT;
|
|
ast_channel_unlock(c[i]);
|
|
return c[i];
|
|
}
|
|
if (!whentohangup || (diff < whentohangup))
|
|
whentohangup = diff;
|
|
}
|
|
ast_channel_unlock(c[i]);
|
|
CHECK_BLOCKING(c[i]);
|
|
}
|
|
|
|
rms = *ms;
|
|
if (whentohangup) {
|
|
rms = whentohangup * 1000;
|
|
if (*ms >= 0 && *ms < rms)
|
|
rms = *ms;
|
|
}
|
|
|
|
if (*ms > 0)
|
|
start = ast_tvnow();
|
|
|
|
res = epoll_wait(c[0]->epfd, ev, 25, rms);
|
|
|
|
for (i = 0; i < n; i++)
|
|
ast_clear_flag(c[i], AST_FLAG_BLOCKING);
|
|
|
|
if (res < 0) {
|
|
if (errno != EINTR)
|
|
*ms = -1;
|
|
return NULL;
|
|
}
|
|
|
|
if (whentohangup) {
|
|
time(&now);
|
|
for (i = 0; i < n; i++) {
|
|
if (c[i]->whentohangup && now >= c[i]->whentohangup) {
|
|
c[i]->_softhangup |= AST_SOFTHANGUP_TIMEOUT;
|
|
if (!winner)
|
|
winner = c[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!res) {
|
|
*ms = 0;
|
|
return winner;
|
|
}
|
|
|
|
for (i = 0; i < 25; i++) {
|
|
struct ast_epoll_data *aed = ev[i].data.ptr;
|
|
|
|
if (!ev[i].events || !aed)
|
|
continue;
|
|
|
|
winner = aed->chan;
|
|
if (ev[i].events & EPOLLPRI)
|
|
ast_set_flag(winner, AST_FLAG_EXCEPTION);
|
|
else
|
|
ast_clear_flag(winner, AST_FLAG_EXCEPTION);
|
|
winner->fdno = aed->which;
|
|
}
|
|
|
|
if (*ms > 0) {
|
|
*ms -= ast_tvdiff_ms(ast_tvnow(), start);
|
|
if (*ms < 0)
|
|
*ms = 0;
|
|
}
|
|
|
|
return winner;
|
|
}
|
|
|
|
struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds, int nfds,
|
|
int *exception, int *outfd, int *ms)
|
|
{
|
|
/* Clear all provided values in one place. */
|
|
if (outfd)
|
|
*outfd = -99999;
|
|
if (exception)
|
|
*exception = 0;
|
|
|
|
/* If no epoll file descriptor is available resort to classic nandfds */
|
|
if (!n || nfds || c[0]->epfd == -1)
|
|
return ast_waitfor_nandfds_classic(c, n, fds, nfds, exception, outfd, ms);
|
|
else if (!nfds && n == 1)
|
|
return ast_waitfor_nandfds_simple(c[0], ms);
|
|
else
|
|
return ast_waitfor_nandfds_complex(c, n, ms);
|
|
}
|
|
#endif
|
|
|
|
struct ast_channel *ast_waitfor_n(struct ast_channel **c, int n, int *ms)
|
|
{
|
|
return ast_waitfor_nandfds(c, n, NULL, 0, NULL, NULL, ms);
|
|
}
|
|
|
|
int ast_waitfor(struct ast_channel *c, int ms)
|
|
{
|
|
int oldms = ms; /* -1 if no timeout */
|
|
|
|
ast_waitfor_nandfds(&c, 1, NULL, 0, NULL, NULL, &ms);
|
|
if ((ms < 0) && (oldms < 0))
|
|
ms = 0;
|
|
return ms;
|
|
}
|
|
|
|
/* XXX never to be called with ms = -1 */
|
|
int ast_waitfordigit(struct ast_channel *c, int ms)
|
|
{
|
|
return ast_waitfordigit_full(c, ms, -1, -1);
|
|
}
|
|
|
|
int ast_settimeout(struct ast_channel *c, int samples, int (*func)(const void *data), void *data)
|
|
{
|
|
int res = -1;
|
|
#ifdef HAVE_ZAPTEL
|
|
if (c->timingfd > -1) {
|
|
if (!func) {
|
|
samples = 0;
|
|
data = 0;
|
|
}
|
|
ast_debug(1, "Scheduling timer at %d sample intervals\n", samples);
|
|
res = ioctl(c->timingfd, ZT_TIMERCONFIG, &samples);
|
|
c->timingfunc = func;
|
|
c->timingdata = data;
|
|
}
|
|
#endif
|
|
return res;
|
|
}
|
|
|
|
int ast_waitfordigit_full(struct ast_channel *c, int ms, int audiofd, int cmdfd)
|
|
{
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c))
|
|
return -1;
|
|
|
|
/* Only look for the end of DTMF, don't bother with the beginning and don't emulate things */
|
|
ast_set_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
|
|
/* Wait for a digit, no more than ms milliseconds total. */
|
|
|
|
while (ms) {
|
|
struct ast_channel *rchan;
|
|
int outfd=-1;
|
|
|
|
errno = 0;
|
|
rchan = ast_waitfor_nandfds(&c, 1, &cmdfd, (cmdfd > -1) ? 1 : 0, NULL, &outfd, &ms);
|
|
|
|
if (!rchan && outfd < 0 && ms) {
|
|
if (errno == 0 || errno == EINTR)
|
|
continue;
|
|
ast_log(LOG_WARNING, "Wait failed (%s)\n", strerror(errno));
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return -1;
|
|
} else if (outfd > -1) {
|
|
/* The FD we were watching has something waiting */
|
|
ast_log(LOG_WARNING, "The FD we were waiting for has something waiting. Waitfordigit returning numeric 1\n");
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return 1;
|
|
} else if (rchan) {
|
|
int res;
|
|
struct ast_frame *f = ast_read(c);
|
|
if (!f)
|
|
return -1;
|
|
|
|
switch (f->frametype) {
|
|
case AST_FRAME_DTMF_BEGIN:
|
|
break;
|
|
case AST_FRAME_DTMF_END:
|
|
res = f->subclass;
|
|
ast_frfree(f);
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return res;
|
|
case AST_FRAME_CONTROL:
|
|
switch (f->subclass) {
|
|
case AST_CONTROL_HANGUP:
|
|
ast_frfree(f);
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
return -1;
|
|
case AST_CONTROL_RINGING:
|
|
case AST_CONTROL_ANSWER:
|
|
/* Unimportant */
|
|
break;
|
|
default:
|
|
ast_log(LOG_WARNING, "Unexpected control subclass '%d'\n", f->subclass);
|
|
break;
|
|
}
|
|
break;
|
|
case AST_FRAME_VOICE:
|
|
/* Write audio if appropriate */
|
|
if (audiofd > -1)
|
|
write(audiofd, f->data, f->datalen);
|
|
default:
|
|
/* Ignore */
|
|
break;
|
|
}
|
|
ast_frfree(f);
|
|
}
|
|
}
|
|
|
|
ast_clear_flag(c, AST_FLAG_END_DTMF_ONLY);
|
|
|
|
return 0; /* Time is up */
|
|
}
|
|
|
|
static void send_dtmf_event(const struct ast_channel *chan, const char *direction, const char digit, const char *begin, const char *end)
|
|
{
|
|
manager_event(EVENT_FLAG_DTMF,
|
|
"DTMF",
|
|
"Channel: %s\r\n"
|
|
"Uniqueid: %s\r\n"
|
|
"Digit: %c\r\n"
|
|
"Direction: %s\r\n"
|
|
"Begin: %s\r\n"
|
|
"End: %s\r\n",
|
|
chan->name, chan->uniqueid, digit, direction, begin, end);
|
|
}
|
|
|
|
static void ast_read_generator_actions(struct ast_channel *chan, struct ast_frame *f)
|
|
{
|
|
if (chan->generatordata && !ast_internal_timing_enabled(chan)) {
|
|
void *tmp = chan->generatordata;
|
|
int res;
|
|
|
|
if (chan->timingfunc) {
|
|
if (option_debug > 1)
|
|
ast_log(LOG_DEBUG, "Generator got voice, switching to phase locked mode\n");
|
|
ast_settimeout(chan, 0, NULL, NULL);
|
|
}
|
|
|
|
chan->generatordata = NULL; /* reset, to let writes go through */
|
|
res = chan->generator->generate(chan, tmp, f->datalen, f->samples);
|
|
chan->generatordata = tmp;
|
|
if (res) {
|
|
if (option_debug > 1)
|
|
ast_log(LOG_DEBUG, "Auto-deactivating generator\n");
|
|
ast_deactivate_generator(chan);
|
|
}
|
|
|
|
} else if (f->frametype == AST_FRAME_CNG) {
|
|
if (chan->generator && !chan->timingfunc && (chan->timingfd > -1)) {
|
|
if (option_debug > 1)
|
|
ast_log(LOG_DEBUG, "Generator got CNG, switching to timed mode\n");
|
|
ast_settimeout(chan, 160, generator_force, chan);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct ast_frame *__ast_read(struct ast_channel *chan, int dropaudio)
|
|
{
|
|
struct ast_frame *f = NULL; /* the return value */
|
|
int blah;
|
|
int prestate;
|
|
int count = 0;
|
|
|
|
/* this function is very long so make sure there is only one return
|
|
* point at the end (there are only two exceptions to this).
|
|
*/
|
|
while(ast_channel_trylock(chan)) {
|
|
if(count++ > 10)
|
|
/*cannot goto done since the channel is not locked*/
|
|
return &ast_null_frame;
|
|
usleep(1);
|
|
}
|
|
|
|
if (chan->masq) {
|
|
if (ast_do_masquerade(chan))
|
|
ast_log(LOG_WARNING, "Failed to perform masquerade\n");
|
|
else
|
|
f = &ast_null_frame;
|
|
goto done;
|
|
}
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) {
|
|
if (chan->generator)
|
|
ast_deactivate_generator(chan);
|
|
goto done;
|
|
}
|
|
prestate = chan->_state;
|
|
|
|
if (!ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_EMULATE_DTMF | AST_FLAG_IN_DTMF) &&
|
|
!ast_strlen_zero(chan->dtmfq) &&
|
|
(ast_tvzero(chan->dtmf_tv) || ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) > AST_MIN_DTMF_GAP) ) {
|
|
/* We have DTMF that has been deferred. Return it now */
|
|
chan->dtmff.subclass = chan->dtmfq[0];
|
|
/* Drop first digit from the buffer */
|
|
memmove(chan->dtmfq, chan->dtmfq + 1, sizeof(chan->dtmfq) - 1);
|
|
f = &chan->dtmff;
|
|
if (ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) {
|
|
ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name);
|
|
chan->dtmff.frametype = AST_FRAME_DTMF_END;
|
|
} else {
|
|
ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %d queued on %s\n", f->subclass, AST_DEFAULT_EMULATE_DTMF_DURATION, chan->name);
|
|
chan->dtmff.frametype = AST_FRAME_DTMF_BEGIN;
|
|
ast_set_flag(chan, AST_FLAG_EMULATE_DTMF);
|
|
chan->emulate_dtmf_digit = f->subclass;
|
|
chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION;
|
|
}
|
|
chan->dtmf_tv = ast_tvnow();
|
|
goto done;
|
|
}
|
|
|
|
/* Read and ignore anything on the alertpipe, but read only
|
|
one sizeof(blah) per frame that we send from it */
|
|
if (chan->alertpipe[0] > -1)
|
|
read(chan->alertpipe[0], &blah, sizeof(blah));
|
|
|
|
#ifdef HAVE_ZAPTEL
|
|
if (chan->timingfd > -1 && chan->fdno == AST_TIMING_FD && ast_test_flag(chan, AST_FLAG_EXCEPTION)) {
|
|
int res;
|
|
|
|
ast_clear_flag(chan, AST_FLAG_EXCEPTION);
|
|
blah = -1;
|
|
/* IF we can't get event, assume it's an expired as-per the old interface */
|
|
res = ioctl(chan->timingfd, ZT_GETEVENT, &blah);
|
|
if (res)
|
|
blah = ZT_EVENT_TIMER_EXPIRED;
|
|
|
|
if (blah == ZT_EVENT_TIMER_PING) {
|
|
if (AST_LIST_EMPTY(&chan->readq) || !AST_LIST_NEXT(AST_LIST_FIRST(&chan->readq), frame_list)) {
|
|
/* Acknowledge PONG unless we need it again */
|
|
if (ioctl(chan->timingfd, ZT_TIMERPONG, &blah)) {
|
|
ast_log(LOG_WARNING, "Failed to pong timer on '%s': %s\n", chan->name, strerror(errno));
|
|
}
|
|
}
|
|
} else if (blah == ZT_EVENT_TIMER_EXPIRED) {
|
|
ioctl(chan->timingfd, ZT_TIMERACK, &blah);
|
|
if (chan->timingfunc) {
|
|
chan->timingfunc(chan->timingdata);
|
|
} else {
|
|
blah = 0;
|
|
ioctl(chan->timingfd, ZT_TIMERCONFIG, &blah);
|
|
chan->timingdata = NULL;
|
|
}
|
|
ast_channel_unlock(chan);
|
|
/* cannot 'goto done' because the channel is already unlocked */
|
|
return &ast_null_frame;
|
|
} else
|
|
ast_log(LOG_NOTICE, "No/unknown event '%d' on timer for '%s'?\n", blah, chan->name);
|
|
} else
|
|
#endif
|
|
if (chan->fds[AST_GENERATOR_FD] > -1 && chan->fdno == AST_GENERATOR_FD) {
|
|
/* if the AST_GENERATOR_FD is set, call the generator with args
|
|
* set to -1 so it can do whatever it needs to.
|
|
*/
|
|
void *tmp = chan->generatordata;
|
|
chan->generatordata = NULL; /* reset to let ast_write get through */
|
|
chan->generator->generate(chan, tmp, -1, -1);
|
|
chan->generatordata = tmp;
|
|
f = &ast_null_frame;
|
|
goto done;
|
|
}
|
|
|
|
/* Check for pending read queue */
|
|
if (!AST_LIST_EMPTY(&chan->readq)) {
|
|
f = AST_LIST_REMOVE_HEAD(&chan->readq, frame_list);
|
|
/* Interpret hangup and return NULL */
|
|
/* XXX why not the same for frames from the channel ? */
|
|
if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP) {
|
|
ast_frfree(f);
|
|
f = NULL;
|
|
}
|
|
} else {
|
|
chan->blocker = pthread_self();
|
|
if (ast_test_flag(chan, AST_FLAG_EXCEPTION)) {
|
|
if (chan->tech->exception)
|
|
f = chan->tech->exception(chan);
|
|
else {
|
|
ast_log(LOG_WARNING, "Exception flag set on '%s', but no exception handler\n", chan->name);
|
|
f = &ast_null_frame;
|
|
}
|
|
/* Clear the exception flag */
|
|
ast_clear_flag(chan, AST_FLAG_EXCEPTION);
|
|
} else if (chan->tech->read)
|
|
f = chan->tech->read(chan);
|
|
else
|
|
ast_log(LOG_WARNING, "No read routine on channel %s\n", chan->name);
|
|
}
|
|
|
|
if (f) {
|
|
/* if the channel driver returned more than one frame, stuff the excess
|
|
into the readq for the next ast_read call (note that we can safely assume
|
|
that the readq is empty, because otherwise we would not have called into
|
|
the channel driver and f would be only a single frame)
|
|
*/
|
|
if (AST_LIST_NEXT(f, frame_list)) {
|
|
AST_LIST_HEAD_SET_NOLOCK(&chan->readq, AST_LIST_NEXT(f, frame_list));
|
|
AST_LIST_NEXT(f, frame_list) = NULL;
|
|
}
|
|
|
|
switch (f->frametype) {
|
|
case AST_FRAME_CONTROL:
|
|
if (f->subclass == AST_CONTROL_ANSWER) {
|
|
if (!ast_test_flag(chan, AST_FLAG_OUTGOING)) {
|
|
ast_debug(1, "Ignoring answer on an inbound call!\n");
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else if (prestate == AST_STATE_UP) {
|
|
ast_debug(1, "Dropping duplicate answer!\n");
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else {
|
|
/* Answer the CDR */
|
|
ast_setstate(chan, AST_STATE_UP);
|
|
if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore,
|
|
to keep from throwing off the basic order of the universe,
|
|
we will try to keep this cdr from getting posted. */
|
|
chan->cdr = ast_cdr_alloc();
|
|
ast_cdr_init(chan->cdr, chan);
|
|
ast_cdr_start(chan->cdr);
|
|
}
|
|
|
|
ast_cdr_answer(chan->cdr);
|
|
}
|
|
}
|
|
break;
|
|
case AST_FRAME_DTMF_END:
|
|
send_dtmf_event(chan, "Received", f->subclass, "No", "Yes");
|
|
ast_log(LOG_DTMF, "DTMF end '%c' received on %s, duration %ld ms\n", f->subclass, chan->name, f->len);
|
|
/* Queue it up if DTMF is deffered, or if DTMF emulation is forced.
|
|
* However, only let emulation be forced if the other end cares about BEGIN frames */
|
|
if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF) ||
|
|
(ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_END_DTMF_ONLY)) ) {
|
|
if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) {
|
|
ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name);
|
|
chan->dtmfq[strlen(chan->dtmfq)] = f->subclass;
|
|
} else
|
|
ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name);
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else if (!ast_test_flag(chan, AST_FLAG_IN_DTMF | AST_FLAG_END_DTMF_ONLY)) {
|
|
if (!ast_tvzero(chan->dtmf_tv) &&
|
|
ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) {
|
|
/* If it hasn't been long enough, defer this digit */
|
|
if (strlen(chan->dtmfq) < sizeof(chan->dtmfq) - 2) {
|
|
ast_log(LOG_DTMF, "DTMF end '%c' put into dtmf queue on %s\n", f->subclass, chan->name);
|
|
chan->dtmfq[strlen(chan->dtmfq)] = f->subclass;
|
|
} else
|
|
ast_log(LOG_WARNING, "Dropping deferred DTMF digits on %s\n", chan->name);
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else {
|
|
/* There was no begin, turn this into a begin and send the end later */
|
|
f->frametype = AST_FRAME_DTMF_BEGIN;
|
|
ast_set_flag(chan, AST_FLAG_EMULATE_DTMF);
|
|
chan->emulate_dtmf_digit = f->subclass;
|
|
chan->dtmf_tv = ast_tvnow();
|
|
if (f->len) {
|
|
if (f->len > AST_MIN_DTMF_DURATION)
|
|
chan->emulate_dtmf_duration = f->len;
|
|
else
|
|
chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION;
|
|
} else
|
|
chan->emulate_dtmf_duration = AST_DEFAULT_EMULATE_DTMF_DURATION;
|
|
ast_log(LOG_DTMF, "DTMF begin emulation of '%c' with duration %u queued on %s\n", f->subclass, chan->emulate_dtmf_duration, chan->name);
|
|
}
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = f;
|
|
f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f);
|
|
if (old_frame != f)
|
|
ast_frfree(old_frame);
|
|
}
|
|
} else {
|
|
struct timeval now = ast_tvnow();
|
|
if (ast_test_flag(chan, AST_FLAG_IN_DTMF)) {
|
|
ast_log(LOG_DTMF, "DTMF end accepted with begin '%c' on %s\n", f->subclass, chan->name);
|
|
ast_clear_flag(chan, AST_FLAG_IN_DTMF);
|
|
if (!f->len)
|
|
f->len = ast_tvdiff_ms(now, chan->dtmf_tv);
|
|
} else if (!f->len) {
|
|
ast_log(LOG_DTMF, "DTMF end accepted without begin '%c' on %s\n", f->subclass, chan->name);
|
|
f->len = AST_MIN_DTMF_DURATION;
|
|
}
|
|
if (f->len < AST_MIN_DTMF_DURATION) {
|
|
ast_log(LOG_DTMF, "DTMF end '%c' has duration %ld but want minimum %d, emulating on %s\n", f->subclass, f->len, AST_MIN_DTMF_DURATION, chan->name);
|
|
ast_set_flag(chan, AST_FLAG_EMULATE_DTMF);
|
|
chan->emulate_dtmf_digit = f->subclass;
|
|
chan->emulate_dtmf_duration = AST_MIN_DTMF_DURATION - f->len;
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else {
|
|
ast_log(LOG_DTMF, "DTMF end passthrough '%c' on %s\n", f->subclass, chan->name);
|
|
chan->dtmf_tv = now;
|
|
}
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = f;
|
|
f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f);
|
|
if (old_frame != f)
|
|
ast_frfree(old_frame);
|
|
}
|
|
}
|
|
break;
|
|
case AST_FRAME_DTMF_BEGIN:
|
|
send_dtmf_event(chan, "Received", f->subclass, "Yes", "No");
|
|
ast_log(LOG_DTMF, "DTMF begin '%c' received on %s\n", f->subclass, chan->name);
|
|
if ( ast_test_flag(chan, AST_FLAG_DEFER_DTMF | AST_FLAG_END_DTMF_ONLY) ||
|
|
(!ast_tvzero(chan->dtmf_tv) &&
|
|
ast_tvdiff_ms(ast_tvnow(), chan->dtmf_tv) < AST_MIN_DTMF_GAP) ) {
|
|
ast_log(LOG_DTMF, "DTMF begin ignored '%c' on %s\n", f->subclass, chan->name);
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else {
|
|
ast_set_flag(chan, AST_FLAG_IN_DTMF);
|
|
chan->dtmf_tv = ast_tvnow();
|
|
ast_log(LOG_DTMF, "DTMF begin passthrough '%c' on %s\n", f->subclass, chan->name);
|
|
}
|
|
break;
|
|
case AST_FRAME_NULL:
|
|
if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF)) {
|
|
struct timeval now = ast_tvnow();
|
|
if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) {
|
|
chan->emulate_dtmf_duration = 0;
|
|
ast_frfree(f);
|
|
f = &chan->dtmff;
|
|
f->frametype = AST_FRAME_DTMF_END;
|
|
f->subclass = chan->emulate_dtmf_digit;
|
|
f->len = ast_tvdiff_ms(now, chan->dtmf_tv);
|
|
chan->dtmf_tv = now;
|
|
ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF);
|
|
chan->emulate_dtmf_digit = 0;
|
|
ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name);
|
|
}
|
|
}
|
|
break;
|
|
case AST_FRAME_VOICE:
|
|
/* The EMULATE_DTMF flag must be cleared here as opposed to when the duration
|
|
* is reached , because we want to make sure we pass at least one
|
|
* voice frame through before starting the next digit, to ensure a gap
|
|
* between DTMF digits. */
|
|
if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !chan->emulate_dtmf_duration) {
|
|
ast_clear_flag(chan, AST_FLAG_EMULATE_DTMF);
|
|
chan->emulate_dtmf_digit = 0;
|
|
}
|
|
|
|
if (dropaudio || ast_test_flag(chan, AST_FLAG_IN_DTMF)) {
|
|
if (dropaudio)
|
|
ast_read_generator_actions(chan, f);
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
}
|
|
|
|
if (ast_test_flag(chan, AST_FLAG_EMULATE_DTMF) && !ast_test_flag(chan, AST_FLAG_IN_DTMF)) {
|
|
struct timeval now = ast_tvnow();
|
|
if (ast_tvdiff_ms(now, chan->dtmf_tv) >= chan->emulate_dtmf_duration) {
|
|
chan->emulate_dtmf_duration = 0;
|
|
ast_frfree(f);
|
|
f = &chan->dtmff;
|
|
f->frametype = AST_FRAME_DTMF_END;
|
|
f->subclass = chan->emulate_dtmf_digit;
|
|
f->len = ast_tvdiff_ms(now, chan->dtmf_tv);
|
|
chan->dtmf_tv = now;
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = f;
|
|
f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f);
|
|
if (old_frame != f)
|
|
ast_frfree(old_frame);
|
|
}
|
|
ast_log(LOG_DTMF, "DTMF end emulation of '%c' queued on %s\n", f->subclass, chan->name);
|
|
} else {
|
|
/* Drop voice frames while we're still in the middle of the digit */
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
}
|
|
} else if ((f->frametype == AST_FRAME_VOICE) && !(f->subclass & chan->nativeformats)) {
|
|
/* This frame can't be from the current native formats -- drop it on the
|
|
floor */
|
|
ast_log(LOG_NOTICE, "Dropping incompatible voice frame on %s of format %s since our native format has changed to %s\n",
|
|
chan->name, ast_getformatname(f->subclass), ast_getformatname(chan->nativeformats));
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
} else if ((f->frametype == AST_FRAME_VOICE)) {
|
|
/* Send frame to audiohooks if present */
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = f;
|
|
f = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_READ, f);
|
|
if (old_frame != f)
|
|
ast_frfree(old_frame);
|
|
}
|
|
if (chan->monitor && chan->monitor->read_stream ) {
|
|
/* XXX what does this do ? */
|
|
#ifndef MONITOR_CONSTANT_DELAY
|
|
int jump = chan->outsmpl - chan->insmpl - 4 * f->samples;
|
|
if (jump >= 0) {
|
|
jump = chan->outsmpl - chan->insmpl;
|
|
if (ast_seekstream(chan->monitor->read_stream, jump, SEEK_FORCECUR) == -1)
|
|
ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n");
|
|
chan->insmpl += jump + f->samples;
|
|
} else
|
|
chan->insmpl+= f->samples;
|
|
#else
|
|
int jump = chan->outsmpl - chan->insmpl;
|
|
if (jump - MONITOR_DELAY >= 0) {
|
|
if (ast_seekstream(chan->monitor->read_stream, jump - f->samples, SEEK_FORCECUR) == -1)
|
|
ast_log(LOG_WARNING, "Failed to perform seek in monitoring read stream, synchronization between the files may be broken\n");
|
|
chan->insmpl += jump;
|
|
} else
|
|
chan->insmpl += f->samples;
|
|
#endif
|
|
if (chan->monitor->state == AST_MONITOR_RUNNING) {
|
|
if (ast_writestream(chan->monitor->read_stream, f) < 0)
|
|
ast_log(LOG_WARNING, "Failed to write data to channel monitor read stream\n");
|
|
}
|
|
}
|
|
|
|
if (chan->readtrans && (f = ast_translate(chan->readtrans, f, 1)) == NULL)
|
|
f = &ast_null_frame;
|
|
else
|
|
/* Run generator sitting on the line if timing device not available
|
|
* and synchronous generation of outgoing frames is necessary */
|
|
ast_read_generator_actions(chan, f);
|
|
}
|
|
default:
|
|
/* Just pass it on! */
|
|
break;
|
|
}
|
|
} else {
|
|
/* Make sure we always return NULL in the future */
|
|
chan->_softhangup |= AST_SOFTHANGUP_DEV;
|
|
if (chan->generator)
|
|
ast_deactivate_generator(chan);
|
|
/* End the CDR if appropriate */
|
|
if (chan->cdr)
|
|
ast_cdr_end(chan->cdr);
|
|
}
|
|
|
|
/* High bit prints debugging */
|
|
if (chan->fin & DEBUGCHAN_FLAG)
|
|
ast_frame_dump(chan->name, f, "<<");
|
|
chan->fin = FRAMECOUNT_INC(chan->fin);
|
|
|
|
done:
|
|
if (chan->music_state && chan->generator && chan->generator->digit && f && f->frametype == AST_FRAME_DTMF_END)
|
|
chan->generator->digit(chan, f->subclass);
|
|
|
|
ast_channel_unlock(chan);
|
|
return f;
|
|
}
|
|
|
|
int ast_internal_timing_enabled(struct ast_channel *chan)
|
|
{
|
|
int ret = ast_opt_internal_timing && chan->timingfd > -1;
|
|
ast_debug(5, "Internal timing is %s (option_internal_timing=%d chan->timingfd=%d)\n", ret? "enabled": "disabled", ast_opt_internal_timing, chan->timingfd);
|
|
return ret;
|
|
}
|
|
|
|
struct ast_frame *ast_read(struct ast_channel *chan)
|
|
{
|
|
return __ast_read(chan, 0);
|
|
}
|
|
|
|
struct ast_frame *ast_read_noaudio(struct ast_channel *chan)
|
|
{
|
|
return __ast_read(chan, 1);
|
|
}
|
|
|
|
int ast_indicate(struct ast_channel *chan, int condition)
|
|
{
|
|
return ast_indicate_data(chan, condition, NULL, 0);
|
|
}
|
|
|
|
int ast_indicate_data(struct ast_channel *chan, int condition, const void *data, size_t datalen)
|
|
{
|
|
int res = -1;
|
|
|
|
ast_channel_lock(chan);
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan)) {
|
|
ast_channel_unlock(chan);
|
|
return -1;
|
|
}
|
|
if (chan->tech->indicate)
|
|
res = chan->tech->indicate(chan, condition, data, datalen);
|
|
ast_channel_unlock(chan);
|
|
if (!chan->tech->indicate || res) {
|
|
/*
|
|
* Device does not support (that) indication, lets fake
|
|
* it by doing our own tone generation. (PM2002)
|
|
*/
|
|
if (condition < 0)
|
|
ast_playtones_stop(chan);
|
|
else {
|
|
const struct ind_tone_zone_sound *ts = NULL;
|
|
switch (condition) {
|
|
case AST_CONTROL_RINGING:
|
|
ts = ast_get_indication_tone(chan->zone, "ring");
|
|
break;
|
|
case AST_CONTROL_BUSY:
|
|
ts = ast_get_indication_tone(chan->zone, "busy");
|
|
break;
|
|
case AST_CONTROL_CONGESTION:
|
|
ts = ast_get_indication_tone(chan->zone, "congestion");
|
|
break;
|
|
}
|
|
if (ts && ts->data[0]) {
|
|
ast_debug(1, "Driver for channel '%s' does not support indication %d, emulating it\n", chan->name, condition);
|
|
ast_playtones_start(chan,0,ts->data, 1);
|
|
res = 0;
|
|
} else if (condition == AST_CONTROL_PROGRESS) {
|
|
/* ast_playtones_stop(chan); */
|
|
} else if (condition == AST_CONTROL_PROCEEDING) {
|
|
/* Do nothing, really */
|
|
} else if (condition == AST_CONTROL_HOLD) {
|
|
/* Do nothing.... */
|
|
} else if (condition == AST_CONTROL_UNHOLD) {
|
|
/* Do nothing.... */
|
|
} else if (condition == AST_CONTROL_VIDUPDATE) {
|
|
/* Do nothing.... */
|
|
} else {
|
|
/* not handled */
|
|
ast_log(LOG_WARNING, "Unable to handle indication %d for '%s'\n", condition, chan->name);
|
|
res = -1;
|
|
}
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int ast_recvchar(struct ast_channel *chan, int timeout)
|
|
{
|
|
int c;
|
|
char *buf = ast_recvtext(chan, timeout);
|
|
if (buf == NULL)
|
|
return -1; /* error or timeout */
|
|
c = *(unsigned char *)buf;
|
|
ast_free(buf);
|
|
return c;
|
|
}
|
|
|
|
char *ast_recvtext(struct ast_channel *chan, int timeout)
|
|
{
|
|
int res, done = 0;
|
|
char *buf = NULL;
|
|
|
|
while (!done) {
|
|
struct ast_frame *f;
|
|
if (ast_check_hangup(chan))
|
|
break;
|
|
res = ast_waitfor(chan, timeout);
|
|
if (res <= 0) /* timeout or error */
|
|
break;
|
|
timeout = res; /* update timeout */
|
|
f = ast_read(chan);
|
|
if (f == NULL)
|
|
break; /* no frame */
|
|
if (f->frametype == AST_FRAME_CONTROL && f->subclass == AST_CONTROL_HANGUP)
|
|
done = 1; /* force a break */
|
|
else if (f->frametype == AST_FRAME_TEXT) { /* what we want */
|
|
buf = ast_strndup((char *) f->data, f->datalen); /* dup and break */
|
|
done = 1;
|
|
}
|
|
ast_frfree(f);
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
int ast_sendtext(struct ast_channel *chan, const char *text)
|
|
{
|
|
int res = 0;
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan))
|
|
return -1;
|
|
CHECK_BLOCKING(chan);
|
|
if (chan->tech->send_text)
|
|
res = chan->tech->send_text(chan, text);
|
|
ast_clear_flag(chan, AST_FLAG_BLOCKING);
|
|
return res;
|
|
}
|
|
|
|
int ast_senddigit_begin(struct ast_channel *chan, char digit)
|
|
{
|
|
/* Device does not support DTMF tones, lets fake
|
|
* it by doing our own generation. */
|
|
static const char* dtmf_tones[] = {
|
|
"941+1336", /* 0 */
|
|
"697+1209", /* 1 */
|
|
"697+1336", /* 2 */
|
|
"697+1477", /* 3 */
|
|
"770+1209", /* 4 */
|
|
"770+1336", /* 5 */
|
|
"770+1477", /* 6 */
|
|
"852+1209", /* 7 */
|
|
"852+1336", /* 8 */
|
|
"852+1477", /* 9 */
|
|
"697+1633", /* A */
|
|
"770+1633", /* B */
|
|
"852+1633", /* C */
|
|
"941+1633", /* D */
|
|
"941+1209", /* * */
|
|
"941+1477" /* # */
|
|
};
|
|
|
|
if (!chan->tech->send_digit_begin)
|
|
return 0;
|
|
|
|
if (!chan->tech->send_digit_begin(chan, digit))
|
|
return 0;
|
|
|
|
if (digit >= '0' && digit <='9')
|
|
ast_playtones_start(chan, 0, dtmf_tones[digit-'0'], 0);
|
|
else if (digit >= 'A' && digit <= 'D')
|
|
ast_playtones_start(chan, 0, dtmf_tones[digit-'A'+10], 0);
|
|
else if (digit == '*')
|
|
ast_playtones_start(chan, 0, dtmf_tones[14], 0);
|
|
else if (digit == '#')
|
|
ast_playtones_start(chan, 0, dtmf_tones[15], 0);
|
|
else {
|
|
/* not handled */
|
|
ast_debug(1, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ast_senddigit_end(struct ast_channel *chan, char digit, unsigned int duration)
|
|
{
|
|
int res = -1;
|
|
|
|
if (chan->tech->send_digit_end)
|
|
res = chan->tech->send_digit_end(chan, digit, duration);
|
|
|
|
if (res && chan->generator)
|
|
ast_playtones_stop(chan);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ast_senddigit(struct ast_channel *chan, char digit, unsigned int duration)
|
|
{
|
|
if (chan->tech->send_digit_begin) {
|
|
ast_senddigit_begin(chan, digit);
|
|
ast_safe_sleep(chan, (duration >= AST_DEFAULT_EMULATE_DTMF_DURATION ? duration : AST_DEFAULT_EMULATE_DTMF_DURATION));
|
|
}
|
|
|
|
return ast_senddigit_end(chan, digit, (duration >= AST_DEFAULT_EMULATE_DTMF_DURATION ? duration : AST_DEFAULT_EMULATE_DTMF_DURATION));
|
|
}
|
|
|
|
int ast_prod(struct ast_channel *chan)
|
|
{
|
|
struct ast_frame a = { AST_FRAME_VOICE };
|
|
char nothing[128];
|
|
|
|
/* Send an empty audio frame to get things moving */
|
|
if (chan->_state != AST_STATE_UP) {
|
|
ast_debug(1, "Prodding channel '%s'\n", chan->name);
|
|
a.subclass = chan->rawwriteformat;
|
|
a.data = nothing + AST_FRIENDLY_OFFSET;
|
|
a.src = "ast_prod";
|
|
if (ast_write(chan, &a))
|
|
ast_log(LOG_WARNING, "Prodding channel '%s' failed\n", chan->name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ast_write_video(struct ast_channel *chan, struct ast_frame *fr)
|
|
{
|
|
int res;
|
|
if (!chan->tech->write_video)
|
|
return 0;
|
|
res = ast_write(chan, fr);
|
|
if (!res)
|
|
res = 1;
|
|
return res;
|
|
}
|
|
|
|
int ast_write(struct ast_channel *chan, struct ast_frame *fr)
|
|
{
|
|
int res = -1;
|
|
struct ast_frame *f = NULL, *f2 = NULL;
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
ast_channel_lock(chan);
|
|
if (ast_test_flag(chan, AST_FLAG_ZOMBIE) || ast_check_hangup(chan))
|
|
goto done;
|
|
|
|
/* Handle any pending masquerades */
|
|
if (chan->masq && ast_do_masquerade(chan)) {
|
|
ast_log(LOG_WARNING, "Failed to perform masquerade\n");
|
|
goto done;
|
|
}
|
|
if (chan->masqr) {
|
|
res = 0; /* XXX explain, why 0 ? */
|
|
goto done;
|
|
}
|
|
if (chan->generatordata) {
|
|
if (ast_test_flag(chan, AST_FLAG_WRITE_INT))
|
|
ast_deactivate_generator(chan);
|
|
else {
|
|
if (fr->frametype == AST_FRAME_DTMF_END) {
|
|
/* There is a generator running while we're in the middle of a digit.
|
|
* It's probably inband DTMF, so go ahead and pass it so it can
|
|
* stop the generator */
|
|
ast_clear_flag(chan, AST_FLAG_BLOCKING);
|
|
ast_channel_unlock(chan);
|
|
res = ast_senddigit_end(chan, fr->subclass, fr->len);
|
|
ast_channel_lock(chan);
|
|
CHECK_BLOCKING(chan);
|
|
} else if (fr->frametype == AST_FRAME_CONTROL && fr->subclass == AST_CONTROL_UNHOLD) {
|
|
/* This is a side case where Echo is basically being called and the person put themselves on hold and took themselves off hold */
|
|
res = (chan->tech->indicate == NULL) ? 0 :
|
|
chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen);
|
|
}
|
|
res = 0; /* XXX explain, why 0 ? */
|
|
goto done;
|
|
}
|
|
}
|
|
/* High bit prints debugging */
|
|
if (chan->fout & DEBUGCHAN_FLAG)
|
|
ast_frame_dump(chan->name, fr, ">>");
|
|
CHECK_BLOCKING(chan);
|
|
switch (fr->frametype) {
|
|
case AST_FRAME_CONTROL:
|
|
res = (chan->tech->indicate == NULL) ? 0 :
|
|
chan->tech->indicate(chan, fr->subclass, fr->data, fr->datalen);
|
|
break;
|
|
case AST_FRAME_DTMF_BEGIN:
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = fr;
|
|
fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr);
|
|
if (old_frame != fr)
|
|
f = fr;
|
|
}
|
|
send_dtmf_event(chan, "Sent", fr->subclass, "Yes", "No");
|
|
ast_clear_flag(chan, AST_FLAG_BLOCKING);
|
|
ast_channel_unlock(chan);
|
|
res = ast_senddigit_begin(chan, fr->subclass);
|
|
ast_channel_lock(chan);
|
|
CHECK_BLOCKING(chan);
|
|
break;
|
|
case AST_FRAME_DTMF_END:
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = fr;
|
|
fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr);
|
|
if (old_frame != fr)
|
|
f = fr;
|
|
}
|
|
send_dtmf_event(chan, "Sent", fr->subclass, "No", "Yes");
|
|
ast_clear_flag(chan, AST_FLAG_BLOCKING);
|
|
ast_channel_unlock(chan);
|
|
res = ast_senddigit_end(chan, fr->subclass, fr->len);
|
|
ast_channel_lock(chan);
|
|
CHECK_BLOCKING(chan);
|
|
break;
|
|
case AST_FRAME_TEXT:
|
|
if (fr->subclass == AST_FORMAT_T140) {
|
|
res = (chan->tech->write_text == NULL) ? 0 :
|
|
chan->tech->write_text(chan, fr);
|
|
} else {
|
|
res = (chan->tech->send_text == NULL) ? 0 :
|
|
chan->tech->send_text(chan, (char *) fr->data);
|
|
}
|
|
break;
|
|
case AST_FRAME_HTML:
|
|
res = (chan->tech->send_html == NULL) ? 0 :
|
|
chan->tech->send_html(chan, fr->subclass, (char *) fr->data, fr->datalen);
|
|
break;
|
|
case AST_FRAME_VIDEO:
|
|
/* XXX Handle translation of video codecs one day XXX */
|
|
res = (chan->tech->write_video == NULL) ? 0 :
|
|
chan->tech->write_video(chan, fr);
|
|
break;
|
|
case AST_FRAME_MODEM:
|
|
res = (chan->tech->write == NULL) ? 0 :
|
|
chan->tech->write(chan, fr);
|
|
break;
|
|
case AST_FRAME_VOICE:
|
|
if (chan->tech->write == NULL)
|
|
break; /*! \todo XXX should return 0 maybe ? */
|
|
|
|
/* If audiohooks are present, write the frame out */
|
|
if (chan->audiohooks) {
|
|
struct ast_frame *old_frame = fr;
|
|
fr = ast_audiohook_write_list(chan, chan->audiohooks, AST_AUDIOHOOK_DIRECTION_WRITE, fr);
|
|
if (old_frame != fr)
|
|
f2 = fr;
|
|
}
|
|
|
|
/* If the frame is in the raw write format, then it's easy... just use the frame - otherwise we will have to translate */
|
|
if (fr->subclass == chan->rawwriteformat)
|
|
f = fr;
|
|
else
|
|
f = (chan->writetrans) ? ast_translate(chan->writetrans, fr, 0) : fr;
|
|
|
|
if (!f) {
|
|
res = 0;
|
|
break;
|
|
}
|
|
|
|
/* If Monitor is running on this channel, then we have to write frames out there too */
|
|
if (chan->monitor && chan->monitor->write_stream) {
|
|
/* XXX must explain this code */
|
|
#ifndef MONITOR_CONSTANT_DELAY
|
|
int jump = chan->insmpl - chan->outsmpl - 4 * f->samples;
|
|
if (jump >= 0) {
|
|
jump = chan->insmpl - chan->outsmpl;
|
|
if (ast_seekstream(chan->monitor->write_stream, jump, SEEK_FORCECUR) == -1)
|
|
ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n");
|
|
chan->outsmpl += jump + f->samples;
|
|
} else
|
|
chan->outsmpl += f->samples;
|
|
#else
|
|
int jump = chan->insmpl - chan->outsmpl;
|
|
if (jump - MONITOR_DELAY >= 0) {
|
|
if (ast_seekstream(chan->monitor->write_stream, jump - f->samples, SEEK_FORCECUR) == -1)
|
|
ast_log(LOG_WARNING, "Failed to perform seek in monitoring write stream, synchronization between the files may be broken\n");
|
|
chan->outsmpl += jump;
|
|
} else
|
|
chan->outsmpl += f->samples;
|
|
#endif
|
|
if (chan->monitor->state == AST_MONITOR_RUNNING) {
|
|
if (ast_writestream(chan->monitor->write_stream, f) < 0)
|
|
ast_log(LOG_WARNING, "Failed to write data to channel monitor write stream\n");
|
|
}
|
|
}
|
|
|
|
if (f) {
|
|
struct ast_channel *base = NULL;
|
|
if (!chan->tech->get_base_channel || chan == chan->tech->get_base_channel(chan))
|
|
res = chan->tech->write(chan, f);
|
|
else {
|
|
while (chan->tech->get_base_channel && (((base = chan->tech->get_base_channel(chan)) && ast_channel_trylock(base)) || base == NULL)) {
|
|
ast_channel_unlock(chan);
|
|
usleep(1);
|
|
ast_channel_lock(chan);
|
|
}
|
|
res = base->tech->write(base, f);
|
|
ast_channel_unlock(base);
|
|
}
|
|
} else
|
|
res = 0;
|
|
break;
|
|
case AST_FRAME_NULL:
|
|
case AST_FRAME_IAX:
|
|
/* Ignore these */
|
|
res = 0;
|
|
break;
|
|
default:
|
|
/* At this point, fr is the incoming frame and f is NULL. Channels do
|
|
* not expect to get NULL as a frame pointer and will segfault. Hence,
|
|
* we output the original frame passed in. */
|
|
res = chan->tech->write(chan, fr);
|
|
break;
|
|
}
|
|
|
|
if (f && f != fr)
|
|
ast_frfree(f);
|
|
if (f2)
|
|
ast_frfree(f2);
|
|
ast_clear_flag(chan, AST_FLAG_BLOCKING);
|
|
/* Consider a write failure to force a soft hangup */
|
|
if (res < 0)
|
|
chan->_softhangup |= AST_SOFTHANGUP_DEV;
|
|
else {
|
|
chan->fout = FRAMECOUNT_INC(chan->fout);
|
|
}
|
|
done:
|
|
ast_channel_unlock(chan);
|
|
return res;
|
|
}
|
|
|
|
static int set_format(struct ast_channel *chan, int fmt, int *rawformat, int *format,
|
|
struct ast_trans_pvt **trans, const int direction)
|
|
{
|
|
int native;
|
|
int res;
|
|
|
|
/* Make sure we only consider audio */
|
|
fmt &= AST_FORMAT_AUDIO_MASK;
|
|
|
|
native = chan->nativeformats;
|
|
/* Find a translation path from the native format to one of the desired formats */
|
|
if (!direction)
|
|
/* reading */
|
|
res = ast_translator_best_choice(&fmt, &native);
|
|
else
|
|
/* writing */
|
|
res = ast_translator_best_choice(&native, &fmt);
|
|
|
|
if (res < 0) {
|
|
ast_log(LOG_WARNING, "Unable to find a codec translation path from %s to %s\n",
|
|
ast_getformatname(native), ast_getformatname(fmt));
|
|
return -1;
|
|
}
|
|
|
|
/* Now we have a good choice for both. */
|
|
ast_channel_lock(chan);
|
|
|
|
if ((*rawformat == native) && (*format == fmt) && ((*rawformat == *format) || (*trans))) {
|
|
/* the channel is already in these formats, so nothing to do */
|
|
ast_channel_unlock(chan);
|
|
return 0;
|
|
}
|
|
|
|
*rawformat = native;
|
|
/* User perspective is fmt */
|
|
*format = fmt;
|
|
/* Free any read translation we have right now */
|
|
if (*trans)
|
|
ast_translator_free_path(*trans);
|
|
/* Build a translation path from the raw format to the desired format */
|
|
if (!direction)
|
|
/* reading */
|
|
*trans = ast_translator_build_path(*format, *rawformat);
|
|
else
|
|
/* writing */
|
|
*trans = ast_translator_build_path(*rawformat, *format);
|
|
ast_channel_unlock(chan);
|
|
ast_debug(1, "Set channel %s to %s format %s\n", chan->name,
|
|
direction ? "write" : "read", ast_getformatname(fmt));
|
|
return 0;
|
|
}
|
|
|
|
int ast_set_read_format(struct ast_channel *chan, int fmt)
|
|
{
|
|
return set_format(chan, fmt, &chan->rawreadformat, &chan->readformat,
|
|
&chan->readtrans, 0);
|
|
}
|
|
|
|
int ast_set_write_format(struct ast_channel *chan, int fmt)
|
|
{
|
|
return set_format(chan, fmt, &chan->rawwriteformat, &chan->writeformat,
|
|
&chan->writetrans, 1);
|
|
}
|
|
|
|
const char *ast_channel_reason2str(int reason)
|
|
{
|
|
switch (reason) /* the following appear to be the only ones actually returned by request_and_dial */
|
|
{
|
|
case 0:
|
|
return "Call Failure (not BUSY, and not NO_ANSWER, maybe Circuit busy or down?)";
|
|
case AST_CONTROL_HANGUP:
|
|
return "Hangup";
|
|
case AST_CONTROL_RING:
|
|
return "Local Ring";
|
|
case AST_CONTROL_RINGING:
|
|
return "Remote end Ringing";
|
|
case AST_CONTROL_ANSWER:
|
|
return "Remote end has Answered";
|
|
case AST_CONTROL_BUSY:
|
|
return "Remote end is Busy";
|
|
case AST_CONTROL_CONGESTION:
|
|
return "Congestion (circuits busy)";
|
|
default:
|
|
return "Unknown Reason!!";
|
|
}
|
|
}
|
|
|
|
struct ast_channel *__ast_request_and_dial(const char *type, int format, void *data, int timeout, int *outstate, const char *cid_num, const char *cid_name, struct outgoing_helper *oh)
|
|
{
|
|
int dummy_outstate;
|
|
int cause = 0;
|
|
struct ast_channel *chan;
|
|
int res = 0;
|
|
|
|
if (outstate)
|
|
*outstate = 0;
|
|
else
|
|
outstate = &dummy_outstate; /* make outstate always a valid pointer */
|
|
|
|
chan = ast_request(type, format, data, &cause);
|
|
if (!chan) {
|
|
ast_log(LOG_NOTICE, "Unable to request channel %s/%s\n", type, (char *)data);
|
|
/* compute error and return */
|
|
if (cause == AST_CAUSE_BUSY)
|
|
*outstate = AST_CONTROL_BUSY;
|
|
else if (cause == AST_CAUSE_CONGESTION)
|
|
*outstate = AST_CONTROL_CONGESTION;
|
|
return NULL;
|
|
}
|
|
|
|
if (oh) {
|
|
if (oh->vars)
|
|
ast_set_variables(chan, oh->vars);
|
|
/* XXX why is this necessary, for the parent_channel perhaps ? */
|
|
if (!ast_strlen_zero(oh->cid_num) && !ast_strlen_zero(oh->cid_name))
|
|
ast_set_callerid(chan, oh->cid_num, oh->cid_name, oh->cid_num);
|
|
if (oh->parent_channel) {
|
|
ast_channel_inherit_variables(oh->parent_channel, chan);
|
|
ast_channel_datastore_inherit(oh->parent_channel, chan);
|
|
}
|
|
if (oh->account)
|
|
ast_cdr_setaccount(chan, oh->account);
|
|
}
|
|
ast_set_callerid(chan, cid_num, cid_name, cid_num);
|
|
|
|
|
|
|
|
if (!chan->cdr) { /* up till now, this insertion hasn't been done. Therefore,
|
|
to keep from throwing off the basic order of the universe,
|
|
we will try to keep this cdr from getting posted. */
|
|
chan->cdr = ast_cdr_alloc();
|
|
ast_cdr_init(chan->cdr, chan);
|
|
ast_cdr_start(chan->cdr);
|
|
}
|
|
if (ast_call(chan, data, 0)) { /* ast_call failed... */
|
|
ast_log(LOG_NOTICE, "Unable to call channel %s/%s\n", type, (char *)data);
|
|
} else {
|
|
res = 1; /* mark success in case chan->_state is already AST_STATE_UP */
|
|
while (timeout && chan->_state != AST_STATE_UP) {
|
|
struct ast_frame *f;
|
|
res = ast_waitfor(chan, timeout);
|
|
if (res <= 0) /* error, timeout, or done */
|
|
break;
|
|
if (timeout > -1)
|
|
timeout = res;
|
|
f = ast_read(chan);
|
|
if (!f) {
|
|
*outstate = AST_CONTROL_HANGUP;
|
|
res = 0;
|
|
break;
|
|
}
|
|
if (f->frametype == AST_FRAME_CONTROL) {
|
|
switch (f->subclass) {
|
|
case AST_CONTROL_RINGING: /* record but keep going */
|
|
*outstate = f->subclass;
|
|
break;
|
|
|
|
case AST_CONTROL_BUSY:
|
|
case AST_CONTROL_CONGESTION:
|
|
case AST_CONTROL_ANSWER:
|
|
*outstate = f->subclass;
|
|
timeout = 0; /* trick to force exit from the while() */
|
|
break;
|
|
|
|
/* Ignore these */
|
|
case AST_CONTROL_PROGRESS:
|
|
case AST_CONTROL_PROCEEDING:
|
|
case AST_CONTROL_HOLD:
|
|
case AST_CONTROL_UNHOLD:
|
|
case AST_CONTROL_VIDUPDATE:
|
|
case -1: /* Ignore -- just stopping indications */
|
|
break;
|
|
|
|
default:
|
|
ast_log(LOG_NOTICE, "Don't know what to do with control frame %d\n", f->subclass);
|
|
}
|
|
}
|
|
ast_frfree(f);
|
|
}
|
|
}
|
|
|
|
/* Final fixups */
|
|
if (oh) {
|
|
if (!ast_strlen_zero(oh->context))
|
|
ast_copy_string(chan->context, oh->context, sizeof(chan->context));
|
|
if (!ast_strlen_zero(oh->exten))
|
|
ast_copy_string(chan->exten, oh->exten, sizeof(chan->exten));
|
|
if (oh->priority)
|
|
chan->priority = oh->priority;
|
|
}
|
|
if (chan->_state == AST_STATE_UP)
|
|
*outstate = AST_CONTROL_ANSWER;
|
|
|
|
if (res <= 0) {
|
|
if (!chan->cdr && (chan->cdr = ast_cdr_alloc()))
|
|
ast_cdr_init(chan->cdr, chan);
|
|
if (chan->cdr) {
|
|
char tmp[256];
|
|
snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data);
|
|
ast_cdr_setapp(chan->cdr,"Dial",tmp);
|
|
ast_cdr_update(chan);
|
|
ast_cdr_start(chan->cdr);
|
|
ast_cdr_end(chan->cdr);
|
|
/* If the cause wasn't handled properly */
|
|
if (ast_cdr_disposition(chan->cdr,chan->hangupcause))
|
|
ast_cdr_failed(chan->cdr);
|
|
}
|
|
ast_hangup(chan);
|
|
chan = NULL;
|
|
}
|
|
return chan;
|
|
}
|
|
|
|
struct ast_channel *ast_request_and_dial(const char *type, int format, void *data, int timeout, int *outstate, const char *cidnum, const char *cidname)
|
|
{
|
|
return __ast_request_and_dial(type, format, data, timeout, outstate, cidnum, cidname, NULL);
|
|
}
|
|
|
|
struct ast_channel *ast_request(const char *type, int format, void *data, int *cause)
|
|
{
|
|
struct chanlist *chan;
|
|
struct ast_channel *c;
|
|
int capabilities;
|
|
int fmt;
|
|
int res;
|
|
int foo;
|
|
int videoformat = format & AST_FORMAT_VIDEO_MASK;
|
|
int textformat = format & AST_FORMAT_TEXT_MASK;
|
|
|
|
if (!cause)
|
|
cause = &foo;
|
|
*cause = AST_CAUSE_NOTDEFINED;
|
|
|
|
if (AST_RWLIST_RDLOCK(&channels)) {
|
|
ast_log(LOG_WARNING, "Unable to lock channel list\n");
|
|
return NULL;
|
|
}
|
|
|
|
AST_LIST_TRAVERSE(&backends, chan, list) {
|
|
if (strcasecmp(type, chan->tech->type))
|
|
continue;
|
|
|
|
capabilities = chan->tech->capabilities;
|
|
fmt = format & AST_FORMAT_AUDIO_MASK;
|
|
res = ast_translator_best_choice(&fmt, &capabilities);
|
|
if (res < 0) {
|
|
ast_log(LOG_WARNING, "No translator path exists for channel type %s (native 0x%x) to 0x%x\n", type, chan->tech->capabilities, format);
|
|
*cause = AST_CAUSE_BEARERCAPABILITY_NOTAVAIL;
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
return NULL;
|
|
}
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
if (!chan->tech->requester)
|
|
return NULL;
|
|
|
|
if (!(c = chan->tech->requester(type, capabilities | videoformat | textformat, data, cause)))
|
|
return NULL;
|
|
|
|
/* no need to generate a Newchannel event here; it is done in the channel_alloc call */
|
|
return c;
|
|
}
|
|
|
|
ast_log(LOG_WARNING, "No channel type registered for '%s'\n", type);
|
|
*cause = AST_CAUSE_NOSUCHDRIVER;
|
|
AST_RWLIST_UNLOCK(&channels);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int ast_call(struct ast_channel *chan, char *addr, int timeout)
|
|
{
|
|
/* Place an outgoing call, but don't wait any longer than timeout ms before returning.
|
|
If the remote end does not answer within the timeout, then do NOT hang up, but
|
|
return anyway. */
|
|
int res = -1;
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
ast_channel_lock(chan);
|
|
if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) {
|
|
if (chan->tech->call)
|
|
res = chan->tech->call(chan, addr, timeout);
|
|
ast_set_flag(chan, AST_FLAG_OUTGOING);
|
|
}
|
|
ast_channel_unlock(chan);
|
|
return res;
|
|
}
|
|
|
|
/*!
|
|
\brief Transfer a call to dest, if the channel supports transfer
|
|
|
|
Called by:
|
|
\arg app_transfer
|
|
\arg the manager interface
|
|
*/
|
|
int ast_transfer(struct ast_channel *chan, char *dest)
|
|
{
|
|
int res = -1;
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
ast_channel_lock(chan);
|
|
if (!ast_test_flag(chan, AST_FLAG_ZOMBIE) && !ast_check_hangup(chan)) {
|
|
if (chan->tech->transfer) {
|
|
res = chan->tech->transfer(chan, dest);
|
|
if (!res)
|
|
res = 1;
|
|
} else
|
|
res = 0;
|
|
}
|
|
ast_channel_unlock(chan);
|
|
return res;
|
|
}
|
|
|
|
int ast_readstring(struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders)
|
|
{
|
|
return ast_readstring_full(c, s, len, timeout, ftimeout, enders, -1, -1);
|
|
}
|
|
|
|
int ast_readstring_full(struct ast_channel *c, char *s, int len, int timeout, int ftimeout, char *enders, int audiofd, int ctrlfd)
|
|
{
|
|
int pos = 0; /* index in the buffer where we accumulate digits */
|
|
int to = ftimeout;
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(c, AST_FLAG_ZOMBIE) || ast_check_hangup(c))
|
|
return -1;
|
|
if (!len)
|
|
return -1;
|
|
for (;;) {
|
|
int d;
|
|
if (c->stream) {
|
|
d = ast_waitstream_full(c, AST_DIGIT_ANY, audiofd, ctrlfd);
|
|
ast_stopstream(c);
|
|
usleep(1000);
|
|
if (!d)
|
|
d = ast_waitfordigit_full(c, to, audiofd, ctrlfd);
|
|
} else {
|
|
d = ast_waitfordigit_full(c, to, audiofd, ctrlfd);
|
|
}
|
|
if (d < 0)
|
|
return -1;
|
|
if (d == 0) {
|
|
s[pos]='\0';
|
|
return 1;
|
|
}
|
|
if (d == 1) {
|
|
s[pos]='\0';
|
|
return 2;
|
|
}
|
|
if (!strchr(enders, d))
|
|
s[pos++] = d;
|
|
if (strchr(enders, d) || (pos >= len)) {
|
|
s[pos]='\0';
|
|
return 0;
|
|
}
|
|
to = timeout;
|
|
}
|
|
/* Never reached */
|
|
return 0;
|
|
}
|
|
|
|
int ast_channel_supports_html(struct ast_channel *chan)
|
|
{
|
|
return (chan->tech->send_html) ? 1 : 0;
|
|
}
|
|
|
|
int ast_channel_sendhtml(struct ast_channel *chan, int subclass, const char *data, int datalen)
|
|
{
|
|
if (chan->tech->send_html)
|
|
return chan->tech->send_html(chan, subclass, data, datalen);
|
|
return -1;
|
|
}
|
|
|
|
int ast_channel_sendurl(struct ast_channel *chan, const char *url)
|
|
{
|
|
return ast_channel_sendhtml(chan, AST_HTML_URL, url, strlen(url) + 1);
|
|
}
|
|
|
|
/*! \brief Set up translation from one channel to another */
|
|
static int ast_channel_make_compatible_helper(struct ast_channel *from, struct ast_channel *to)
|
|
{
|
|
int src;
|
|
int dst;
|
|
|
|
if (from->readformat == to->writeformat && from->writeformat == to->readformat) {
|
|
/* Already compatible! Moving on ... */
|
|
return 0;
|
|
}
|
|
|
|
/* Set up translation from the 'from' channel to the 'to' channel */
|
|
src = from->nativeformats;
|
|
dst = to->nativeformats;
|
|
if (ast_translator_best_choice(&dst, &src) < 0) {
|
|
ast_log(LOG_WARNING, "No path to translate from %s(%d) to %s(%d)\n", from->name, src, to->name, dst);
|
|
return -1;
|
|
}
|
|
|
|
/* if the best path is not 'pass through', then
|
|
transcoding is needed; if desired, force transcode path
|
|
to use SLINEAR between channels, but only if there is
|
|
no direct conversion available */
|
|
if ((src != dst) && ast_opt_transcode_via_slin &&
|
|
(ast_translate_path_steps(dst, src) != 1))
|
|
dst = AST_FORMAT_SLINEAR;
|
|
if (ast_set_read_format(from, dst) < 0) {
|
|
ast_log(LOG_WARNING, "Unable to set read format on channel %s to %d\n", from->name, dst);
|
|
return -1;
|
|
}
|
|
if (ast_set_write_format(to, dst) < 0) {
|
|
ast_log(LOG_WARNING, "Unable to set write format on channel %s to %d\n", to->name, dst);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ast_channel_make_compatible(struct ast_channel *chan, struct ast_channel *peer)
|
|
{
|
|
/* Some callers do not check return code, and we must try to set all call legs correctly */
|
|
int rc = 0;
|
|
|
|
/* Set up translation from the chan to the peer */
|
|
rc = ast_channel_make_compatible_helper(chan, peer);
|
|
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
/* Set up translation from the peer to the chan */
|
|
rc = ast_channel_make_compatible_helper(peer, chan);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int ast_channel_masquerade(struct ast_channel *original, struct ast_channel *clone)
|
|
{
|
|
int res = -1;
|
|
struct ast_channel *final_orig, *final_clone, *base;
|
|
|
|
retrymasq:
|
|
final_orig = original;
|
|
final_clone = clone;
|
|
|
|
ast_channel_lock(original);
|
|
while (ast_channel_trylock(clone)) {
|
|
ast_channel_unlock(original);
|
|
usleep(1);
|
|
ast_channel_lock(original);
|
|
}
|
|
|
|
/* each of these channels may be sitting behind a channel proxy (i.e. chan_agent)
|
|
and if so, we don't really want to masquerade it, but its proxy */
|
|
if (original->_bridge && (original->_bridge != ast_bridged_channel(original)) && (original->_bridge->_bridge != original))
|
|
final_orig = original->_bridge;
|
|
|
|
if (clone->_bridge && (clone->_bridge != ast_bridged_channel(clone)) && (clone->_bridge->_bridge != clone))
|
|
final_clone = clone->_bridge;
|
|
|
|
if (final_clone->tech->get_base_channel && (base = final_clone->tech->get_base_channel(final_clone))) {
|
|
final_clone = base;
|
|
}
|
|
|
|
if ((final_orig != original) || (final_clone != clone)) {
|
|
/* Lots and lots of deadlock avoidance. The main one we're competing with
|
|
* is ast_write(), which locks channels recursively, when working with a
|
|
* proxy channel. */
|
|
if (ast_channel_trylock(final_orig)) {
|
|
ast_channel_unlock(clone);
|
|
ast_channel_unlock(original);
|
|
goto retrymasq;
|
|
}
|
|
if (ast_channel_trylock(final_clone)) {
|
|
ast_channel_unlock(final_orig);
|
|
ast_channel_unlock(clone);
|
|
ast_channel_unlock(original);
|
|
goto retrymasq;
|
|
}
|
|
ast_channel_unlock(clone);
|
|
ast_channel_unlock(original);
|
|
original = final_orig;
|
|
clone = final_clone;
|
|
}
|
|
|
|
if (original == clone) {
|
|
ast_log(LOG_WARNING, "Can't masquerade channel '%s' into itself!\n", original->name);
|
|
ast_channel_unlock(clone);
|
|
ast_channel_unlock(original);
|
|
return -1;
|
|
}
|
|
|
|
ast_debug(1, "Planning to masquerade channel %s into the structure of %s\n",
|
|
clone->name, original->name);
|
|
if (original->masq) {
|
|
ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n",
|
|
original->masq->name, original->name);
|
|
} else if (clone->masqr) {
|
|
ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n",
|
|
clone->name, clone->masqr->name);
|
|
} else {
|
|
original->masq = clone;
|
|
clone->masqr = original;
|
|
ast_queue_frame(original, &ast_null_frame);
|
|
ast_queue_frame(clone, &ast_null_frame);
|
|
ast_debug(1, "Done planning to masquerade channel %s into the structure of %s\n", clone->name, original->name);
|
|
res = 0;
|
|
}
|
|
|
|
ast_channel_unlock(clone);
|
|
ast_channel_unlock(original);
|
|
|
|
return res;
|
|
}
|
|
|
|
void ast_change_name(struct ast_channel *chan, char *newname)
|
|
{
|
|
manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", chan->name, newname, chan->uniqueid);
|
|
ast_string_field_set(chan, name, newname);
|
|
}
|
|
|
|
void ast_channel_inherit_variables(const struct ast_channel *parent, struct ast_channel *child)
|
|
{
|
|
struct ast_var_t *current, *newvar;
|
|
const char *varname;
|
|
|
|
AST_LIST_TRAVERSE(&parent->varshead, current, entries) {
|
|
int vartype = 0;
|
|
|
|
varname = ast_var_full_name(current);
|
|
if (!varname)
|
|
continue;
|
|
|
|
if (varname[0] == '_') {
|
|
vartype = 1;
|
|
if (varname[1] == '_')
|
|
vartype = 2;
|
|
}
|
|
|
|
switch (vartype) {
|
|
case 1:
|
|
newvar = ast_var_assign(&varname[1], ast_var_value(current));
|
|
if (newvar) {
|
|
AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries);
|
|
ast_debug(1, "Copying soft-transferable variable %s.\n", ast_var_name(newvar));
|
|
}
|
|
break;
|
|
case 2:
|
|
newvar = ast_var_assign(ast_var_full_name(current), ast_var_value(current));
|
|
if (newvar) {
|
|
AST_LIST_INSERT_TAIL(&child->varshead, newvar, entries);
|
|
ast_debug(1, "Copying hard-transferable variable %s.\n", ast_var_name(newvar));
|
|
}
|
|
break;
|
|
default:
|
|
ast_debug(1, "Not copying variable %s.\n", ast_var_name(current));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief Clone channel variables from 'clone' channel into 'original' channel
|
|
|
|
All variables except those related to app_groupcount are cloned.
|
|
Variables are actually _removed_ from 'clone' channel, presumably
|
|
because it will subsequently be destroyed.
|
|
|
|
\note Assumes locks will be in place on both channels when called.
|
|
*/
|
|
static void clone_variables(struct ast_channel *original, struct ast_channel *clone)
|
|
{
|
|
struct ast_var_t *current, *newvar;
|
|
/* Append variables from clone channel into original channel */
|
|
/* XXX Is this always correct? We have to in order to keep MACROS working XXX */
|
|
if (AST_LIST_FIRST(&clone->varshead))
|
|
AST_LIST_APPEND_LIST(&original->varshead, &clone->varshead, entries);
|
|
|
|
/* then, dup the varshead list into the clone */
|
|
|
|
AST_LIST_TRAVERSE(&original->varshead, current, entries) {
|
|
newvar = ast_var_assign(current->name, current->value);
|
|
if (newvar)
|
|
AST_LIST_INSERT_TAIL(&clone->varshead, newvar, entries);
|
|
}
|
|
}
|
|
|
|
/*!
|
|
\brief Masquerade a channel
|
|
|
|
\note Assumes channel will be locked when called
|
|
*/
|
|
int ast_do_masquerade(struct ast_channel *original)
|
|
{
|
|
int x,i;
|
|
int res=0;
|
|
int origstate;
|
|
struct ast_frame *cur;
|
|
const struct ast_channel_tech *t;
|
|
void *t_pvt;
|
|
struct ast_callerid tmpcid;
|
|
struct ast_channel *clone = original->masq;
|
|
struct ast_cdr *cdr;
|
|
int rformat = original->readformat;
|
|
int wformat = original->writeformat;
|
|
char newn[100];
|
|
char orig[100];
|
|
char masqn[100];
|
|
char zombn[100];
|
|
|
|
ast_debug(4, "Actually Masquerading %s(%d) into the structure of %s(%d)\n",
|
|
clone->name, clone->_state, original->name, original->_state);
|
|
|
|
manager_event(EVENT_FLAG_CALL, "Masquerade", "Clone: %s\r\nCloneState: %s\r\nOriginal: %s\r\nOriginalState: %s\r\n",
|
|
clone->name, ast_state2str(clone->_state), original->name, ast_state2str(original->_state));
|
|
|
|
/* XXX This is a seriously wacked out operation. We're essentially putting the guts of
|
|
the clone channel into the original channel. Start by killing off the original
|
|
channel's backend. I'm not sure we're going to keep this function, because
|
|
while the features are nice, the cost is very high in terms of pure nastiness. XXX */
|
|
|
|
/* We need the clone's lock, too */
|
|
ast_channel_lock(clone);
|
|
|
|
ast_debug(2, "Got clone lock for masquerade on '%s' at %p\n", clone->name, &clone->lock_dont_use);
|
|
|
|
/* Having remembered the original read/write formats, we turn off any translation on either
|
|
one */
|
|
free_translation(clone);
|
|
free_translation(original);
|
|
|
|
|
|
/* Unlink the masquerade */
|
|
original->masq = NULL;
|
|
clone->masqr = NULL;
|
|
|
|
/* Save the original name */
|
|
ast_copy_string(orig, original->name, sizeof(orig));
|
|
/* Save the new name */
|
|
ast_copy_string(newn, clone->name, sizeof(newn));
|
|
/* Create the masq name */
|
|
snprintf(masqn, sizeof(masqn), "%s<MASQ>", newn);
|
|
|
|
/* Copy the name from the clone channel */
|
|
ast_string_field_set(original, name, newn);
|
|
|
|
/* Mangle the name of the clone channel */
|
|
ast_string_field_set(clone, name, masqn);
|
|
|
|
/* Notify any managers of the change, first the masq then the other */
|
|
manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", newn, masqn, clone->uniqueid);
|
|
manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", orig, newn, original->uniqueid);
|
|
|
|
/* Swap the technologies */
|
|
t = original->tech;
|
|
original->tech = clone->tech;
|
|
clone->tech = t;
|
|
|
|
/* Swap the cdrs */
|
|
cdr = original->cdr;
|
|
original->cdr = clone->cdr;
|
|
clone->cdr = cdr;
|
|
|
|
t_pvt = original->tech_pvt;
|
|
original->tech_pvt = clone->tech_pvt;
|
|
clone->tech_pvt = t_pvt;
|
|
|
|
/* Swap the alertpipes */
|
|
for (i = 0; i < 2; i++) {
|
|
x = original->alertpipe[i];
|
|
original->alertpipe[i] = clone->alertpipe[i];
|
|
clone->alertpipe[i] = x;
|
|
}
|
|
|
|
/*
|
|
* Swap the readq's. The end result should be this:
|
|
*
|
|
* 1) All frames should be on the new (original) channel.
|
|
* 2) Any frames that were already on the new channel before this
|
|
* masquerade need to be at the end of the readq, after all of the
|
|
* frames on the old (clone) channel.
|
|
* 3) The alertpipe needs to get poked for every frame that was already
|
|
* on the new channel, since we are now using the alert pipe from the
|
|
* old (clone) channel.
|
|
*/
|
|
{
|
|
AST_LIST_HEAD_NOLOCK(, ast_frame) tmp_readq;
|
|
AST_LIST_HEAD_SET_NOLOCK(&tmp_readq, NULL);
|
|
|
|
AST_LIST_APPEND_LIST(&tmp_readq, &original->readq, frame_list);
|
|
AST_LIST_APPEND_LIST(&original->readq, &clone->readq, frame_list);
|
|
|
|
while ((cur = AST_LIST_REMOVE_HEAD(&tmp_readq, frame_list))) {
|
|
AST_LIST_INSERT_TAIL(&original->readq, cur, frame_list);
|
|
if (original->alertpipe[1] > -1) {
|
|
int poke = 0;
|
|
write(original->alertpipe[1], &poke, sizeof(poke));
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Swap the raw formats */
|
|
x = original->rawreadformat;
|
|
original->rawreadformat = clone->rawreadformat;
|
|
clone->rawreadformat = x;
|
|
x = original->rawwriteformat;
|
|
original->rawwriteformat = clone->rawwriteformat;
|
|
clone->rawwriteformat = x;
|
|
|
|
clone->_softhangup = AST_SOFTHANGUP_DEV;
|
|
|
|
/* And of course, so does our current state. Note we need not
|
|
call ast_setstate since the event manager doesn't really consider
|
|
these separate. We do this early so that the clone has the proper
|
|
state of the original channel. */
|
|
origstate = original->_state;
|
|
original->_state = clone->_state;
|
|
clone->_state = origstate;
|
|
|
|
if (clone->tech->fixup){
|
|
res = clone->tech->fixup(original, clone);
|
|
if (res)
|
|
ast_log(LOG_WARNING, "Fixup failed on channel %s, strange things may happen.\n", clone->name);
|
|
}
|
|
|
|
/* Start by disconnecting the original's physical side */
|
|
if (clone->tech->hangup)
|
|
res = clone->tech->hangup(clone);
|
|
if (res) {
|
|
ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n");
|
|
ast_channel_unlock(clone);
|
|
return -1;
|
|
}
|
|
|
|
snprintf(zombn, sizeof(zombn), "%s<ZOMBIE>", orig);
|
|
/* Mangle the name of the clone channel */
|
|
ast_string_field_set(clone, name, zombn);
|
|
manager_event(EVENT_FLAG_CALL, "Rename", "Oldname: %s\r\nNewname: %s\r\nUniqueid: %s\r\n", masqn, zombn, clone->uniqueid);
|
|
|
|
/* Update the type. */
|
|
t_pvt = original->monitor;
|
|
original->monitor = clone->monitor;
|
|
clone->monitor = t_pvt;
|
|
|
|
/* Keep the same language. */
|
|
ast_string_field_set(original, language, clone->language);
|
|
/* Copy the FD's other than the generator fd */
|
|
for (x = 0; x < AST_MAX_FDS; x++) {
|
|
if (x != AST_GENERATOR_FD)
|
|
ast_channel_set_fd(original, x, clone->fds[x]);
|
|
}
|
|
|
|
ast_app_group_update(clone, original);
|
|
|
|
/* Move data stores over */
|
|
if (AST_LIST_FIRST(&clone->datastores))
|
|
AST_LIST_APPEND_LIST(&original->datastores, &clone->datastores, entry);
|
|
|
|
clone_variables(original, clone);
|
|
/* Presense of ADSI capable CPE follows clone */
|
|
original->adsicpe = clone->adsicpe;
|
|
/* Bridge remains the same */
|
|
/* CDR fields remain the same */
|
|
/* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */
|
|
/* Application and data remain the same */
|
|
/* Clone exception becomes real one, as with fdno */
|
|
ast_copy_flags(original, clone, AST_FLAG_EXCEPTION);
|
|
original->fdno = clone->fdno;
|
|
/* Schedule context remains the same */
|
|
/* Stream stuff stays the same */
|
|
/* Keep the original state. The fixup code will need to work with it most likely */
|
|
|
|
/* Just swap the whole structures, nevermind the allocations, they'll work themselves
|
|
out. */
|
|
tmpcid = original->cid;
|
|
original->cid = clone->cid;
|
|
clone->cid = tmpcid;
|
|
|
|
/* Restore original timing file descriptor */
|
|
ast_channel_set_fd(original, AST_TIMING_FD, original->timingfd);
|
|
|
|
/* Our native formats are different now */
|
|
original->nativeformats = clone->nativeformats;
|
|
|
|
/* Context, extension, priority, app data, jump table, remain the same */
|
|
/* pvt switches. pbx stays the same, as does next */
|
|
|
|
/* Set the write format */
|
|
ast_set_write_format(original, wformat);
|
|
|
|
/* Set the read format */
|
|
ast_set_read_format(original, rformat);
|
|
|
|
/* Copy the music class */
|
|
ast_string_field_set(original, musicclass, clone->musicclass);
|
|
|
|
ast_debug(1, "Putting channel %s in %d/%d formats\n", original->name, wformat, rformat);
|
|
|
|
/* Okay. Last thing is to let the channel driver know about all this mess, so he
|
|
can fix up everything as best as possible */
|
|
if (original->tech->fixup) {
|
|
res = original->tech->fixup(clone, original);
|
|
if (res) {
|
|
ast_log(LOG_WARNING, "Channel for type '%s' could not fixup channel %s\n",
|
|
original->tech->type, original->name);
|
|
ast_channel_unlock(clone);
|
|
return -1;
|
|
}
|
|
} else
|
|
ast_log(LOG_WARNING, "Channel type '%s' does not have a fixup routine (for %s)! Bad things may happen.\n",
|
|
original->tech->type, original->name);
|
|
|
|
/* Now, at this point, the "clone" channel is totally F'd up. We mark it as
|
|
a zombie so nothing tries to touch it. If it's already been marked as a
|
|
zombie, then free it now (since it already is considered invalid). */
|
|
if (ast_test_flag(clone, AST_FLAG_ZOMBIE)) {
|
|
ast_debug(1, "Destroying channel clone '%s'\n", clone->name);
|
|
ast_channel_unlock(clone);
|
|
manager_event(EVENT_FLAG_CALL, "Hangup",
|
|
"Channel: %s\r\n"
|
|
"Uniqueid: %s\r\n"
|
|
"Cause: %d\r\n"
|
|
"Cause-txt: %s\r\n",
|
|
clone->name,
|
|
clone->uniqueid,
|
|
clone->hangupcause,
|
|
ast_cause2str(clone->hangupcause)
|
|
);
|
|
ast_channel_free(clone);
|
|
} else {
|
|
ast_debug(1, "Released clone lock on '%s'\n", clone->name);
|
|
ast_set_flag(clone, AST_FLAG_ZOMBIE);
|
|
ast_queue_frame(clone, &ast_null_frame);
|
|
ast_channel_unlock(clone);
|
|
}
|
|
|
|
/* Signal any blocker */
|
|
if (ast_test_flag(original, AST_FLAG_BLOCKING))
|
|
pthread_kill(original->blocker, SIGURG);
|
|
ast_debug(1, "Done Masquerading %s (%d)\n", original->name, original->_state);
|
|
return 0;
|
|
}
|
|
|
|
void ast_set_callerid(struct ast_channel *chan, const char *callerid, const char *calleridname, const char *ani)
|
|
{
|
|
if (callerid) {
|
|
if (chan->cid.cid_num)
|
|
ast_free(chan->cid.cid_num);
|
|
chan->cid.cid_num = ast_strdup(callerid);
|
|
}
|
|
if (calleridname) {
|
|
if (chan->cid.cid_name)
|
|
ast_free(chan->cid.cid_name);
|
|
chan->cid.cid_name = ast_strdup(calleridname);
|
|
}
|
|
if (ani) {
|
|
if (chan->cid.cid_ani)
|
|
ast_free(chan->cid.cid_ani);
|
|
chan->cid.cid_ani = ast_strdup(ani);
|
|
}
|
|
if (chan->cdr)
|
|
ast_cdr_setcid(chan->cdr, chan);
|
|
manager_event(EVENT_FLAG_CALL, "Newcallerid",
|
|
"Channel: %s\r\n"
|
|
"CallerIDNum: %s\r\n"
|
|
"CallerIDName: %s\r\n"
|
|
"Uniqueid: %s\r\n"
|
|
"CID-CallingPres: %d (%s)\r\n",
|
|
chan->name,
|
|
S_OR(chan->cid.cid_num, "<Unknown>"),
|
|
S_OR(chan->cid.cid_name, "<Unknown>"),
|
|
chan->uniqueid,
|
|
chan->cid.cid_pres,
|
|
ast_describe_caller_presentation(chan->cid.cid_pres)
|
|
);
|
|
}
|
|
|
|
int ast_setstate(struct ast_channel *chan, enum ast_channel_state state)
|
|
{
|
|
int oldstate = chan->_state;
|
|
|
|
if (oldstate == state)
|
|
return 0;
|
|
|
|
chan->_state = state;
|
|
ast_device_state_changed_literal(chan->name);
|
|
/* setstate used to conditionally report Newchannel; this is no more */
|
|
manager_event(EVENT_FLAG_CALL,
|
|
"Newstate",
|
|
"Channel: %s\r\n"
|
|
"State: %s\r\n"
|
|
"CallerIDNum: %s\r\n"
|
|
"CallerIDName: %s\r\n"
|
|
"Uniqueid: %s\r\n",
|
|
chan->name, ast_state2str(chan->_state),
|
|
S_OR(chan->cid.cid_num, "<unknown>"),
|
|
S_OR(chan->cid.cid_name, "<unknown>"),
|
|
chan->uniqueid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief Find bridged channel */
|
|
struct ast_channel *ast_bridged_channel(struct ast_channel *chan)
|
|
{
|
|
struct ast_channel *bridged;
|
|
bridged = chan->_bridge;
|
|
if (bridged && bridged->tech->bridged_channel)
|
|
bridged = bridged->tech->bridged_channel(chan, bridged);
|
|
return bridged;
|
|
}
|
|
|
|
static void bridge_playfile(struct ast_channel *chan, struct ast_channel *peer, const char *sound, int remain)
|
|
{
|
|
int min = 0, sec = 0, check;
|
|
|
|
check = ast_autoservice_start(peer);
|
|
if (check)
|
|
return;
|
|
|
|
if (remain > 0) {
|
|
if (remain / 60 > 1) {
|
|
min = remain / 60;
|
|
sec = remain % 60;
|
|
} else {
|
|
sec = remain;
|
|
}
|
|
}
|
|
|
|
if (!strcmp(sound,"timeleft")) { /* Queue support */
|
|
ast_stream_and_wait(chan, "vm-youhave", "");
|
|
if (min) {
|
|
ast_say_number(chan, min, AST_DIGIT_ANY, chan->language, NULL);
|
|
ast_stream_and_wait(chan, "queue-minutes", "");
|
|
}
|
|
if (sec) {
|
|
ast_say_number(chan, sec, AST_DIGIT_ANY, chan->language, NULL);
|
|
ast_stream_and_wait(chan, "queue-seconds", "");
|
|
}
|
|
} else {
|
|
ast_stream_and_wait(chan, sound, "");
|
|
}
|
|
|
|
ast_autoservice_stop(peer);
|
|
}
|
|
|
|
static enum ast_bridge_result ast_generic_bridge(struct ast_channel *c0, struct ast_channel *c1,
|
|
struct ast_bridge_config *config, struct ast_frame **fo,
|
|
struct ast_channel **rc, struct timeval bridge_end)
|
|
{
|
|
/* Copy voice back and forth between the two channels. */
|
|
struct ast_channel *cs[3];
|
|
struct ast_frame *f;
|
|
enum ast_bridge_result res = AST_BRIDGE_COMPLETE;
|
|
int o0nativeformats;
|
|
int o1nativeformats;
|
|
int watch_c0_dtmf;
|
|
int watch_c1_dtmf;
|
|
void *pvt0, *pvt1;
|
|
/* Indicates whether a frame was queued into a jitterbuffer */
|
|
int frame_put_in_jb = 0;
|
|
int jb_in_use;
|
|
int to;
|
|
|
|
cs[0] = c0;
|
|
cs[1] = c1;
|
|
pvt0 = c0->tech_pvt;
|
|
pvt1 = c1->tech_pvt;
|
|
o0nativeformats = c0->nativeformats;
|
|
o1nativeformats = c1->nativeformats;
|
|
watch_c0_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_0;
|
|
watch_c1_dtmf = config->flags & AST_BRIDGE_DTMF_CHANNEL_1;
|
|
|
|
/* Check the need of a jitterbuffer for each channel */
|
|
jb_in_use = ast_jb_do_usecheck(c0, c1);
|
|
|
|
ast_poll_channel_add(c0, c1);
|
|
|
|
for (;;) {
|
|
struct ast_channel *who, *other;
|
|
|
|
if ((c0->tech_pvt != pvt0) || (c1->tech_pvt != pvt1) ||
|
|
(o0nativeformats != c0->nativeformats) ||
|
|
(o1nativeformats != c1->nativeformats)) {
|
|
/* Check for Masquerade, codec changes, etc */
|
|
res = AST_BRIDGE_RETRY;
|
|
break;
|
|
}
|
|
if (bridge_end.tv_sec) {
|
|
to = ast_tvdiff_ms(bridge_end, ast_tvnow());
|
|
if (to <= 0) {
|
|
if (config->timelimit)
|
|
res = AST_BRIDGE_RETRY;
|
|
else
|
|
res = AST_BRIDGE_COMPLETE;
|
|
break;
|
|
}
|
|
} else
|
|
to = -1;
|
|
/* Calculate the appropriate max sleep interval - in general, this is the time,
|
|
left to the closest jb delivery moment */
|
|
if (jb_in_use)
|
|
to = ast_jb_get_when_to_wakeup(c0, c1, to);
|
|
who = ast_waitfor_n(cs, 2, &to);
|
|
if (!who) {
|
|
/* No frame received within the specified timeout - check if we have to deliver now */
|
|
if (jb_in_use)
|
|
ast_jb_get_and_deliver(c0, c1);
|
|
if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) {
|
|
if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE)
|
|
c0->_softhangup = 0;
|
|
if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE)
|
|
c1->_softhangup = 0;
|
|
c0->_bridge = c1;
|
|
c1->_bridge = c0;
|
|
}
|
|
continue;
|
|
}
|
|
f = ast_read(who);
|
|
if (!f) {
|
|
*fo = NULL;
|
|
*rc = who;
|
|
ast_debug(1, "Didn't get a frame from channel: %s\n",who->name);
|
|
break;
|
|
}
|
|
|
|
other = (who == c0) ? c1 : c0; /* the 'other' channel */
|
|
/* Try add the frame info the who's bridged channel jitterbuff */
|
|
if (jb_in_use)
|
|
frame_put_in_jb = !ast_jb_put(other, f);
|
|
|
|
if ((f->frametype == AST_FRAME_CONTROL) && !(config->flags & AST_BRIDGE_IGNORE_SIGS)) {
|
|
int bridge_exit = 0;
|
|
|
|
switch (f->subclass) {
|
|
case AST_CONTROL_HOLD:
|
|
case AST_CONTROL_UNHOLD:
|
|
case AST_CONTROL_VIDUPDATE:
|
|
ast_indicate_data(other, f->subclass, f->data, f->datalen);
|
|
break;
|
|
default:
|
|
*fo = f;
|
|
*rc = who;
|
|
bridge_exit = 1;
|
|
ast_debug(1, "Got a FRAME_CONTROL (%d) frame on channel %s\n", f->subclass, who->name);
|
|
break;
|
|
}
|
|
if (bridge_exit)
|
|
break;
|
|
}
|
|
if ((f->frametype == AST_FRAME_VOICE) ||
|
|
(f->frametype == AST_FRAME_DTMF_BEGIN) ||
|
|
(f->frametype == AST_FRAME_DTMF) ||
|
|
(f->frametype == AST_FRAME_VIDEO) ||
|
|
(f->frametype == AST_FRAME_IMAGE) ||
|
|
(f->frametype == AST_FRAME_HTML) ||
|
|
(f->frametype == AST_FRAME_MODEM) ||
|
|
(f->frametype == AST_FRAME_TEXT)) {
|
|
/* monitored dtmf causes exit from bridge */
|
|
int monitored_source = (who == c0) ? watch_c0_dtmf : watch_c1_dtmf;
|
|
|
|
if (monitored_source &&
|
|
(f->frametype == AST_FRAME_DTMF_END ||
|
|
f->frametype == AST_FRAME_DTMF_BEGIN)) {
|
|
*fo = f;
|
|
*rc = who;
|
|
ast_debug(1, "Got DTMF %s on channel (%s)\n",
|
|
f->frametype == AST_FRAME_DTMF_END ? "end" : "begin",
|
|
who->name);
|
|
break;
|
|
}
|
|
/* Write immediately frames, not passed through jb */
|
|
if (!frame_put_in_jb)
|
|
ast_write(other, f);
|
|
|
|
/* Check if we have to deliver now */
|
|
if (jb_in_use)
|
|
ast_jb_get_and_deliver(c0, c1);
|
|
}
|
|
/* XXX do we want to pass on also frames not matched above ? */
|
|
ast_frfree(f);
|
|
|
|
#ifndef HAVE_EPOLL
|
|
/* Swap who gets priority */
|
|
cs[2] = cs[0];
|
|
cs[0] = cs[1];
|
|
cs[1] = cs[2];
|
|
#endif
|
|
}
|
|
|
|
ast_poll_channel_del(c0, c1);
|
|
|
|
return res;
|
|
}
|
|
|
|
/*! \brief Bridge two channels together (early) */
|
|
int ast_channel_early_bridge(struct ast_channel *c0, struct ast_channel *c1)
|
|
{
|
|
/* Make sure we can early bridge, if not error out */
|
|
if (!c0->tech->early_bridge || (c1 && (!c1->tech->early_bridge || c0->tech->early_bridge != c1->tech->early_bridge)))
|
|
return -1;
|
|
|
|
return c0->tech->early_bridge(c0, c1);
|
|
}
|
|
|
|
/*! \brief Bridge two channels together */
|
|
enum ast_bridge_result ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1,
|
|
struct ast_bridge_config *config, struct ast_frame **fo, struct ast_channel **rc)
|
|
{
|
|
struct ast_channel *who = NULL;
|
|
enum ast_bridge_result res = AST_BRIDGE_COMPLETE;
|
|
int nativefailed=0;
|
|
int firstpass;
|
|
int o0nativeformats;
|
|
int o1nativeformats;
|
|
long time_left_ms=0;
|
|
struct timeval nexteventts = { 0, };
|
|
char caller_warning = 0;
|
|
char callee_warning = 0;
|
|
|
|
if (c0->_bridge) {
|
|
ast_log(LOG_WARNING, "%s is already in a bridge with %s\n",
|
|
c0->name, c0->_bridge->name);
|
|
return -1;
|
|
}
|
|
if (c1->_bridge) {
|
|
ast_log(LOG_WARNING, "%s is already in a bridge with %s\n",
|
|
c1->name, c1->_bridge->name);
|
|
return -1;
|
|
}
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) ||
|
|
ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1))
|
|
return -1;
|
|
|
|
*fo = NULL;
|
|
firstpass = config->firstpass;
|
|
config->firstpass = 0;
|
|
|
|
if (ast_tvzero(config->start_time))
|
|
config->start_time = ast_tvnow();
|
|
time_left_ms = config->timelimit;
|
|
|
|
caller_warning = ast_test_flag(&config->features_caller, AST_FEATURE_PLAY_WARNING);
|
|
callee_warning = ast_test_flag(&config->features_callee, AST_FEATURE_PLAY_WARNING);
|
|
|
|
if (config->start_sound && firstpass) {
|
|
if (caller_warning)
|
|
bridge_playfile(c0, c1, config->start_sound, time_left_ms / 1000);
|
|
if (callee_warning)
|
|
bridge_playfile(c1, c0, config->start_sound, time_left_ms / 1000);
|
|
}
|
|
|
|
/* Keep track of bridge */
|
|
c0->_bridge = c1;
|
|
c1->_bridge = c0;
|
|
|
|
/* \todo XXX here should check that cid_num is not NULL */
|
|
manager_event(EVENT_FLAG_CALL, "Link",
|
|
"Channel1: %s\r\n"
|
|
"Channel2: %s\r\n"
|
|
"Uniqueid1: %s\r\n"
|
|
"Uniqueid2: %s\r\n"
|
|
"CallerID1: %s\r\n"
|
|
"CallerID2: %s\r\n",
|
|
c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num);
|
|
|
|
o0nativeformats = c0->nativeformats;
|
|
o1nativeformats = c1->nativeformats;
|
|
|
|
if (config->feature_timer) {
|
|
nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->feature_timer, 1000));
|
|
} else if (config->timelimit) {
|
|
nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000));
|
|
if (caller_warning || callee_warning)
|
|
nexteventts = ast_tvsub(nexteventts, ast_samp2tv(config->play_warning, 1000));
|
|
}
|
|
|
|
if (!c0->tech->send_digit_begin)
|
|
ast_set_flag(c1, AST_FLAG_END_DTMF_ONLY);
|
|
if (!c1->tech->send_digit_begin)
|
|
ast_set_flag(c0, AST_FLAG_END_DTMF_ONLY);
|
|
|
|
for (/* ever */;;) {
|
|
struct timeval now = { 0, };
|
|
int to;
|
|
|
|
to = -1;
|
|
|
|
if (!ast_tvzero(nexteventts)) {
|
|
now = ast_tvnow();
|
|
to = ast_tvdiff_ms(nexteventts, now);
|
|
if (to <= 0) {
|
|
if (!config->timelimit) {
|
|
res = AST_BRIDGE_COMPLETE;
|
|
break;
|
|
}
|
|
to = 0;
|
|
}
|
|
}
|
|
|
|
if (config->timelimit) {
|
|
time_left_ms = config->timelimit - ast_tvdiff_ms(now, config->start_time);
|
|
if (time_left_ms < to)
|
|
to = time_left_ms;
|
|
|
|
if (time_left_ms <= 0) {
|
|
if (caller_warning && config->end_sound)
|
|
bridge_playfile(c0, c1, config->end_sound, 0);
|
|
if (callee_warning && config->end_sound)
|
|
bridge_playfile(c1, c0, config->end_sound, 0);
|
|
*fo = NULL;
|
|
if (who)
|
|
*rc = who;
|
|
res = 0;
|
|
break;
|
|
}
|
|
|
|
if (!to) {
|
|
if (time_left_ms >= 5000 && config->warning_sound && config->play_warning) {
|
|
int t = (time_left_ms + 500) / 1000; /* round to nearest second */
|
|
if (caller_warning)
|
|
bridge_playfile(c0, c1, config->warning_sound, t);
|
|
if (callee_warning)
|
|
bridge_playfile(c1, c0, config->warning_sound, t);
|
|
}
|
|
if (config->warning_freq && (time_left_ms > (config->warning_freq + 5000)))
|
|
nexteventts = ast_tvadd(nexteventts, ast_samp2tv(config->warning_freq, 1000));
|
|
else
|
|
nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000));
|
|
}
|
|
}
|
|
|
|
if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE) {
|
|
if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE)
|
|
c0->_softhangup = 0;
|
|
if (c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE)
|
|
c1->_softhangup = 0;
|
|
c0->_bridge = c1;
|
|
c1->_bridge = c0;
|
|
ast_debug(1, "Unbridge signal received. Ending native bridge.\n");
|
|
continue;
|
|
}
|
|
|
|
/* Stop if we're a zombie or need a soft hangup */
|
|
if (ast_test_flag(c0, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c0) ||
|
|
ast_test_flag(c1, AST_FLAG_ZOMBIE) || ast_check_hangup_locked(c1)) {
|
|
*fo = NULL;
|
|
if (who)
|
|
*rc = who;
|
|
res = 0;
|
|
ast_debug(1, "Bridge stops because we're zombie or need a soft hangup: c0=%s, c1=%s, flags: %s,%s,%s,%s\n",
|
|
c0->name, c1->name,
|
|
ast_test_flag(c0, AST_FLAG_ZOMBIE) ? "Yes" : "No",
|
|
ast_check_hangup(c0) ? "Yes" : "No",
|
|
ast_test_flag(c1, AST_FLAG_ZOMBIE) ? "Yes" : "No",
|
|
ast_check_hangup(c1) ? "Yes" : "No");
|
|
break;
|
|
}
|
|
|
|
/* See if the BRIDGEPEER variable needs to be updated */
|
|
if (!ast_strlen_zero(pbx_builtin_getvar_helper(c0, "BRIDGEPEER")))
|
|
pbx_builtin_setvar_helper(c0, "BRIDGEPEER", c1->name);
|
|
if (!ast_strlen_zero(pbx_builtin_getvar_helper(c1, "BRIDGEPEER")))
|
|
pbx_builtin_setvar_helper(c1, "BRIDGEPEER", c0->name);
|
|
|
|
if (c0->tech->bridge &&
|
|
(config->timelimit == 0) &&
|
|
(c0->tech->bridge == c1->tech->bridge) &&
|
|
!nativefailed && !c0->monitor && !c1->monitor &&
|
|
!c0->audiohooks && !c1->audiohooks &&
|
|
!c0->masq && !c0->masqr && !c1->masq && !c1->masqr) {
|
|
/* Looks like they share a bridge method and nothing else is in the way */
|
|
ast_set_flag(c0, AST_FLAG_NBRIDGE);
|
|
ast_set_flag(c1, AST_FLAG_NBRIDGE);
|
|
if ((res = c0->tech->bridge(c0, c1, config->flags, fo, rc, to)) == AST_BRIDGE_COMPLETE) {
|
|
/* \todo XXX here should check that cid_num is not NULL */
|
|
manager_event(EVENT_FLAG_CALL, "Unlink",
|
|
"Channel1: %s\r\n"
|
|
"Channel2: %s\r\n"
|
|
"Uniqueid1: %s\r\n"
|
|
"Uniqueid2: %s\r\n"
|
|
"CallerID1: %s\r\n"
|
|
"CallerID2: %s\r\n",
|
|
c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num);
|
|
ast_debug(1, "Returning from native bridge, channels: %s, %s\n", c0->name, c1->name);
|
|
|
|
ast_clear_flag(c0, AST_FLAG_NBRIDGE);
|
|
ast_clear_flag(c1, AST_FLAG_NBRIDGE);
|
|
|
|
if (c0->_softhangup == AST_SOFTHANGUP_UNBRIDGE || c1->_softhangup == AST_SOFTHANGUP_UNBRIDGE)
|
|
continue;
|
|
|
|
c0->_bridge = NULL;
|
|
c1->_bridge = NULL;
|
|
|
|
return res;
|
|
} else {
|
|
ast_clear_flag(c0, AST_FLAG_NBRIDGE);
|
|
ast_clear_flag(c1, AST_FLAG_NBRIDGE);
|
|
}
|
|
switch (res) {
|
|
case AST_BRIDGE_RETRY:
|
|
continue;
|
|
default:
|
|
ast_verb(3, "Native bridging %s and %s ended\n", c0->name, c1->name);
|
|
/* fallthrough */
|
|
case AST_BRIDGE_FAILED_NOWARN:
|
|
nativefailed++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (((c0->writeformat != c1->readformat) || (c0->readformat != c1->writeformat) ||
|
|
(c0->nativeformats != o0nativeformats) || (c1->nativeformats != o1nativeformats)) &&
|
|
!(c0->generator || c1->generator)) {
|
|
if (ast_channel_make_compatible(c0, c1)) {
|
|
ast_log(LOG_WARNING, "Can't make %s and %s compatible\n", c0->name, c1->name);
|
|
/* \todo XXX here should check that cid_num is not NULL */
|
|
manager_event(EVENT_FLAG_CALL, "Unlink",
|
|
"Channel1: %s\r\n"
|
|
"Channel2: %s\r\n"
|
|
"Uniqueid1: %s\r\n"
|
|
"Uniqueid2: %s\r\n"
|
|
"CallerID1: %s\r\n"
|
|
"CallerID2: %s\r\n",
|
|
c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num);
|
|
return AST_BRIDGE_FAILED;
|
|
}
|
|
o0nativeformats = c0->nativeformats;
|
|
o1nativeformats = c1->nativeformats;
|
|
}
|
|
res = ast_generic_bridge(c0, c1, config, fo, rc, nexteventts);
|
|
if (res != AST_BRIDGE_RETRY)
|
|
break;
|
|
}
|
|
|
|
ast_clear_flag(c0, AST_FLAG_END_DTMF_ONLY);
|
|
ast_clear_flag(c1, AST_FLAG_END_DTMF_ONLY);
|
|
|
|
c0->_bridge = NULL;
|
|
c1->_bridge = NULL;
|
|
|
|
/* \todo XXX here should check that cid_num is not NULL */
|
|
manager_event(EVENT_FLAG_CALL, "Unlink",
|
|
"Channel1: %s\r\n"
|
|
"Channel2: %s\r\n"
|
|
"Uniqueid1: %s\r\n"
|
|
"Uniqueid2: %s\r\n"
|
|
"CallerID1: %s\r\n"
|
|
"CallerID2: %s\r\n",
|
|
c0->name, c1->name, c0->uniqueid, c1->uniqueid, c0->cid.cid_num, c1->cid.cid_num);
|
|
ast_debug(1, "Bridge stops bridging channels %s and %s\n", c0->name, c1->name);
|
|
|
|
return res;
|
|
}
|
|
|
|
/*! \brief Sets an option on a channel */
|
|
int ast_channel_setoption(struct ast_channel *chan, int option, void *data, int datalen, int block)
|
|
{
|
|
int res;
|
|
|
|
if (chan->tech->setoption) {
|
|
res = chan->tech->setoption(chan, option, data, datalen);
|
|
if (res < 0)
|
|
return res;
|
|
} else {
|
|
errno = ENOSYS;
|
|
return -1;
|
|
}
|
|
if (block) {
|
|
/* XXX Implement blocking -- just wait for our option frame reply, discarding
|
|
intermediate packets. XXX */
|
|
ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct tonepair_def {
|
|
int freq1;
|
|
int freq2;
|
|
int duration;
|
|
int vol;
|
|
};
|
|
|
|
struct tonepair_state {
|
|
int fac1;
|
|
int fac2;
|
|
int v1_1;
|
|
int v2_1;
|
|
int v3_1;
|
|
int v1_2;
|
|
int v2_2;
|
|
int v3_2;
|
|
int origwfmt;
|
|
int pos;
|
|
int duration;
|
|
int modulate;
|
|
struct ast_frame f;
|
|
unsigned char offset[AST_FRIENDLY_OFFSET];
|
|
short data[4000];
|
|
};
|
|
|
|
static void tonepair_release(struct ast_channel *chan, void *params)
|
|
{
|
|
struct tonepair_state *ts = params;
|
|
|
|
if (chan)
|
|
ast_set_write_format(chan, ts->origwfmt);
|
|
ast_free(ts);
|
|
}
|
|
|
|
static void *tonepair_alloc(struct ast_channel *chan, void *params)
|
|
{
|
|
struct tonepair_state *ts;
|
|
struct tonepair_def *td = params;
|
|
|
|
if (!(ts = ast_calloc(1, sizeof(*ts))))
|
|
return NULL;
|
|
ts->origwfmt = chan->writeformat;
|
|
if (ast_set_write_format(chan, AST_FORMAT_SLINEAR)) {
|
|
ast_log(LOG_WARNING, "Unable to set '%s' to signed linear format (write)\n", chan->name);
|
|
tonepair_release(NULL, ts);
|
|
ts = NULL;
|
|
} else {
|
|
ts->fac1 = 2.0 * cos(2.0 * M_PI * (td->freq1 / 8000.0)) * 32768.0;
|
|
ts->v1_1 = 0;
|
|
ts->v2_1 = sin(-4.0 * M_PI * (td->freq1 / 8000.0)) * td->vol;
|
|
ts->v3_1 = sin(-2.0 * M_PI * (td->freq1 / 8000.0)) * td->vol;
|
|
ts->v2_1 = 0;
|
|
ts->fac2 = 2.0 * cos(2.0 * M_PI * (td->freq2 / 8000.0)) * 32768.0;
|
|
ts->v2_2 = sin(-4.0 * M_PI * (td->freq2 / 8000.0)) * td->vol;
|
|
ts->v3_2 = sin(-2.0 * M_PI * (td->freq2 / 8000.0)) * td->vol;
|
|
ts->duration = td->duration;
|
|
ts->modulate = 0;
|
|
}
|
|
/* Let interrupts interrupt :) */
|
|
ast_set_flag(chan, AST_FLAG_WRITE_INT);
|
|
return ts;
|
|
}
|
|
|
|
static int tonepair_generator(struct ast_channel *chan, void *data, int len, int samples)
|
|
{
|
|
struct tonepair_state *ts = data;
|
|
int x;
|
|
|
|
/* we need to prepare a frame with 16 * timelen samples as we're
|
|
* generating SLIN audio
|
|
*/
|
|
len = samples * 2;
|
|
|
|
if (len > sizeof(ts->data) / 2 - 1) {
|
|
ast_log(LOG_WARNING, "Can't generate that much data!\n");
|
|
return -1;
|
|
}
|
|
memset(&ts->f, 0, sizeof(ts->f));
|
|
for (x=0;x<len/2;x++) {
|
|
ts->v1_1 = ts->v2_1;
|
|
ts->v2_1 = ts->v3_1;
|
|
ts->v3_1 = (ts->fac1 * ts->v2_1 >> 15) - ts->v1_1;
|
|
|
|
ts->v1_2 = ts->v2_2;
|
|
ts->v2_2 = ts->v3_2;
|
|
ts->v3_2 = (ts->fac2 * ts->v2_2 >> 15) - ts->v1_2;
|
|
if (ts->modulate) {
|
|
int p;
|
|
p = ts->v3_2 - 32768;
|
|
if (p < 0) p = -p;
|
|
p = ((p * 9) / 10) + 1;
|
|
ts->data[x] = (ts->v3_1 * p) >> 15;
|
|
} else
|
|
ts->data[x] = ts->v3_1 + ts->v3_2;
|
|
}
|
|
ts->f.frametype = AST_FRAME_VOICE;
|
|
ts->f.subclass = AST_FORMAT_SLINEAR;
|
|
ts->f.datalen = len;
|
|
ts->f.samples = samples;
|
|
ts->f.offset = AST_FRIENDLY_OFFSET;
|
|
ts->f.data = ts->data;
|
|
ast_write(chan, &ts->f);
|
|
ts->pos += x;
|
|
if (ts->duration > 0) {
|
|
if (ts->pos >= ts->duration * 8)
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_generator tonepair = {
|
|
alloc: tonepair_alloc,
|
|
release: tonepair_release,
|
|
generate: tonepair_generator,
|
|
};
|
|
|
|
int ast_tonepair_start(struct ast_channel *chan, int freq1, int freq2, int duration, int vol)
|
|
{
|
|
struct tonepair_def d = { 0, };
|
|
|
|
d.freq1 = freq1;
|
|
d.freq2 = freq2;
|
|
d.duration = duration;
|
|
d.vol = (vol < 1) ? 8192 : vol; /* force invalid to 8192 */
|
|
if (ast_activate_generator(chan, &tonepair, &d))
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
void ast_tonepair_stop(struct ast_channel *chan)
|
|
{
|
|
ast_deactivate_generator(chan);
|
|
}
|
|
|
|
int ast_tonepair(struct ast_channel *chan, int freq1, int freq2, int duration, int vol)
|
|
{
|
|
int res;
|
|
|
|
if ((res = ast_tonepair_start(chan, freq1, freq2, duration, vol)))
|
|
return res;
|
|
|
|
/* Give us some wiggle room */
|
|
while (chan->generatordata && ast_waitfor(chan, 100) >= 0) {
|
|
struct ast_frame *f = ast_read(chan);
|
|
if (f)
|
|
ast_frfree(f);
|
|
else
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
ast_group_t ast_get_group(const char *s)
|
|
{
|
|
char *piece;
|
|
char *c;
|
|
int start=0, finish=0, x;
|
|
ast_group_t group = 0;
|
|
|
|
c = ast_strdupa(s);
|
|
|
|
while ((piece = strsep(&c, ","))) {
|
|
if (sscanf(piece, "%d-%d", &start, &finish) == 2) {
|
|
/* Range */
|
|
} else if (sscanf(piece, "%d", &start)) {
|
|
/* Just one */
|
|
finish = start;
|
|
} else {
|
|
ast_log(LOG_ERROR, "Syntax error parsing group configuration '%s' at '%s'. Ignoring.\n", s, piece);
|
|
continue;
|
|
}
|
|
for (x = start; x <= finish; x++) {
|
|
if ((x > 63) || (x < 0)) {
|
|
ast_log(LOG_WARNING, "Ignoring invalid group %d (maximum group is 63)\n", x);
|
|
} else
|
|
group |= ((ast_group_t) 1 << x);
|
|
}
|
|
}
|
|
return group;
|
|
}
|
|
|
|
static int (*ast_moh_start_ptr)(struct ast_channel *, const char *, const char *) = NULL;
|
|
static void (*ast_moh_stop_ptr)(struct ast_channel *) = NULL;
|
|
static void (*ast_moh_cleanup_ptr)(struct ast_channel *) = NULL;
|
|
|
|
void ast_install_music_functions(int (*start_ptr)(struct ast_channel *, const char *, const char *),
|
|
void (*stop_ptr)(struct ast_channel *),
|
|
void (*cleanup_ptr)(struct ast_channel *))
|
|
{
|
|
ast_moh_start_ptr = start_ptr;
|
|
ast_moh_stop_ptr = stop_ptr;
|
|
ast_moh_cleanup_ptr = cleanup_ptr;
|
|
}
|
|
|
|
void ast_uninstall_music_functions(void)
|
|
{
|
|
ast_moh_start_ptr = NULL;
|
|
ast_moh_stop_ptr = NULL;
|
|
ast_moh_cleanup_ptr = NULL;
|
|
}
|
|
|
|
/*! \brief Turn on music on hold on a given channel */
|
|
int ast_moh_start(struct ast_channel *chan, const char *mclass, const char *interpclass)
|
|
{
|
|
if (ast_moh_start_ptr)
|
|
return ast_moh_start_ptr(chan, mclass, interpclass);
|
|
|
|
ast_verb(3, "Music class %s requested but no musiconhold loaded.\n", mclass ? mclass : (interpclass ? interpclass : "default"));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief Turn off music on hold on a given channel */
|
|
void ast_moh_stop(struct ast_channel *chan)
|
|
{
|
|
if (ast_moh_stop_ptr)
|
|
ast_moh_stop_ptr(chan);
|
|
}
|
|
|
|
void ast_moh_cleanup(struct ast_channel *chan)
|
|
{
|
|
if (ast_moh_cleanup_ptr)
|
|
ast_moh_cleanup_ptr(chan);
|
|
}
|
|
|
|
void ast_channels_init(void)
|
|
{
|
|
ast_cli_register_multiple(cli_channel, sizeof(cli_channel) / sizeof(struct ast_cli_entry));
|
|
}
|
|
|
|
/*! \brief Print call group and pickup group ---*/
|
|
char *ast_print_group(char *buf, int buflen, ast_group_t group)
|
|
{
|
|
unsigned int i;
|
|
int first=1;
|
|
char num[3];
|
|
|
|
buf[0] = '\0';
|
|
|
|
if (!group) /* Return empty string if no group */
|
|
return buf;
|
|
|
|
for (i = 0; i <= 63; i++) { /* Max group is 63 */
|
|
if (group & ((ast_group_t) 1 << i)) {
|
|
if (!first) {
|
|
strncat(buf, ", ", buflen);
|
|
} else {
|
|
first=0;
|
|
}
|
|
snprintf(num, sizeof(num), "%u", i);
|
|
strncat(buf, num, buflen);
|
|
}
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
void ast_set_variables(struct ast_channel *chan, struct ast_variable *vars)
|
|
{
|
|
struct ast_variable *cur;
|
|
|
|
for (cur = vars; cur; cur = cur->next)
|
|
pbx_builtin_setvar_helper(chan, cur->name, cur->value);
|
|
}
|
|
|
|
static void *silence_generator_alloc(struct ast_channel *chan, void *data)
|
|
{
|
|
/* just store the data pointer in the channel structure */
|
|
return data;
|
|
}
|
|
|
|
static void silence_generator_release(struct ast_channel *chan, void *data)
|
|
{
|
|
/* nothing to do */
|
|
}
|
|
|
|
static int silence_generator_generate(struct ast_channel *chan, void *data, int len, int samples)
|
|
{
|
|
short buf[samples];
|
|
struct ast_frame frame = {
|
|
.frametype = AST_FRAME_VOICE,
|
|
.subclass = AST_FORMAT_SLINEAR,
|
|
.data = buf,
|
|
.samples = samples,
|
|
.datalen = sizeof(buf),
|
|
};
|
|
memset(buf, 0, sizeof(buf));
|
|
if (ast_write(chan, &frame))
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_generator silence_generator = {
|
|
.alloc = silence_generator_alloc,
|
|
.release = silence_generator_release,
|
|
.generate = silence_generator_generate,
|
|
};
|
|
|
|
struct ast_silence_generator {
|
|
int old_write_format;
|
|
};
|
|
|
|
struct ast_silence_generator *ast_channel_start_silence_generator(struct ast_channel *chan)
|
|
{
|
|
struct ast_silence_generator *state;
|
|
|
|
if (!(state = ast_calloc(1, sizeof(*state)))) {
|
|
return NULL;
|
|
}
|
|
|
|
state->old_write_format = chan->writeformat;
|
|
|
|
if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) {
|
|
ast_log(LOG_ERROR, "Could not set write format to SLINEAR\n");
|
|
ast_free(state);
|
|
return NULL;
|
|
}
|
|
|
|
ast_activate_generator(chan, &silence_generator, state);
|
|
|
|
ast_debug(1, "Started silence generator on '%s'\n", chan->name);
|
|
|
|
return state;
|
|
}
|
|
|
|
void ast_channel_stop_silence_generator(struct ast_channel *chan, struct ast_silence_generator *state)
|
|
{
|
|
if (!state)
|
|
return;
|
|
|
|
ast_deactivate_generator(chan);
|
|
|
|
ast_debug(1, "Stopped silence generator on '%s'\n", chan->name);
|
|
|
|
if (ast_set_write_format(chan, state->old_write_format) < 0)
|
|
ast_log(LOG_ERROR, "Could not return write format to its original state\n");
|
|
|
|
ast_free(state);
|
|
}
|
|
|
|
|
|
/*! \ brief Convert channel reloadreason (ENUM) to text string for manager event */
|
|
const char *channelreloadreason2txt(enum channelreloadreason reason)
|
|
{
|
|
switch (reason) {
|
|
case CHANNEL_MODULE_LOAD:
|
|
return "LOAD (Channel module load)";
|
|
|
|
case CHANNEL_MODULE_RELOAD:
|
|
return "RELOAD (Channel module reload)";
|
|
|
|
case CHANNEL_CLI_RELOAD:
|
|
return "CLIRELOAD (Channel module reload by CLI command)";
|
|
|
|
default:
|
|
return "MANAGERRELOAD (Channel module reload by manager)";
|
|
}
|
|
};
|
|
|
|
#ifdef DEBUG_CHANNEL_LOCKS
|
|
|
|
/*! \brief Unlock AST channel (and print debugging output)
|
|
\note You need to enable DEBUG_CHANNEL_LOCKS for this function
|
|
*/
|
|
int ast_channel_unlock(struct ast_channel *chan)
|
|
{
|
|
int res = 0;
|
|
ast_debug(3, "::::==== Unlocking AST channel %s\n", chan->name);
|
|
|
|
if (!chan) {
|
|
ast_debug(1, "::::==== Unlocking non-existing channel \n");
|
|
return 0;
|
|
}
|
|
|
|
res = ast_mutex_unlock(&chan->lock_dont_use);
|
|
|
|
if (option_debug > 2) {
|
|
#ifdef DEBUG_THREADS
|
|
int count = 0;
|
|
if ((count = chan->lock_dont_use.reentrancy))
|
|
ast_debug(3, ":::=== Still have %d locks (recursive)\n", count);
|
|
#endif
|
|
if (!res)
|
|
ast_debug(3, "::::==== Channel %s was unlocked\n", chan->name);
|
|
if (res == EINVAL) {
|
|
ast_debug(3, "::::==== Channel %s had no lock by this thread. Failed unlocking\n", chan->name);
|
|
}
|
|
}
|
|
if (res == EPERM) {
|
|
/* We had no lock, so okay any way*/
|
|
ast_debug(4, "::::==== Channel %s was not locked at all \n", chan->name);
|
|
res = 0;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/*! \brief Lock AST channel (and print debugging output)
|
|
\note You need to enable DEBUG_CHANNEL_LOCKS for this function */
|
|
int ast_channel_lock(struct ast_channel *chan)
|
|
{
|
|
int res;
|
|
|
|
ast_debug(4, "====:::: Locking AST channel %s\n", chan->name);
|
|
|
|
res = ast_mutex_lock(&chan->lock_dont_use);
|
|
|
|
if (option_debug > 3) {
|
|
#ifdef DEBUG_THREADS
|
|
int count = 0;
|
|
if ((count = chan->lock_dont_use.reentrancy))
|
|
ast_debug(4, ":::=== Now have %d locks (recursive)\n", count);
|
|
#endif
|
|
if (!res)
|
|
ast_debug(4, "::::==== Channel %s was locked\n", chan->name);
|
|
if (res == EDEADLK) {
|
|
/* We had no lock, so okey any way */
|
|
ast_debug(4, "::::==== Channel %s was not locked by us. Lock would cause deadlock.\n", chan->name);
|
|
}
|
|
if (res == EINVAL) {
|
|
ast_debug(4, "::::==== Channel %s lock failed. No mutex.\n", chan->name);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/*! \brief Lock AST channel (and print debugging output)
|
|
\note You need to enable DEBUG_CHANNEL_LOCKS for this function */
|
|
int ast_channel_trylock(struct ast_channel *chan)
|
|
{
|
|
int res;
|
|
|
|
ast_debug(3, "====:::: Trying to lock AST channel %s\n", chan->name);
|
|
|
|
res = ast_mutex_trylock(&chan->lock_dont_use);
|
|
|
|
if (option_debug > 2) {
|
|
#ifdef DEBUG_THREADS
|
|
int count = 0;
|
|
if ((count = chan->lock_dont_use.reentrancy))
|
|
ast_debug(3, ":::=== Now have %d locks (recursive)\n", count);
|
|
#endif
|
|
if (!res)
|
|
ast_debug(3, "::::==== Channel %s was locked\n", chan->name);
|
|
if (res == EBUSY) {
|
|
/* We failed to lock */
|
|
ast_debug(3, "::::==== Channel %s failed to lock. Not waiting around...\n", chan->name);
|
|
}
|
|
if (res == EDEADLK) {
|
|
/* We had no lock, so okey any way*/
|
|
ast_debug(3, "::::==== Channel %s was not locked. Lock would cause deadlock.\n", chan->name);
|
|
}
|
|
if (res == EINVAL)
|
|
ast_debug(3, "::::==== Channel %s lock failed. No mutex.\n", chan->name);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Wrappers for various ast_say_*() functions that call the full version
|
|
* of the same functions.
|
|
* The proper place would be say.c, but that file is optional and one
|
|
* must be able to build asterisk even without it (using a loadable 'say'
|
|
* implementation that only supplies the 'full' version of the functions.
|
|
*/
|
|
|
|
int ast_say_number(struct ast_channel *chan, int num,
|
|
const char *ints, const char *language, const char *options)
|
|
{
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|
return ast_say_number_full(chan, num, ints, language, options, -1, -1);
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|
}
|
|
|
|
int ast_say_enumeration(struct ast_channel *chan, int num,
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|
const char *ints, const char *language, const char *options)
|
|
{
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|
return ast_say_enumeration_full(chan, num, ints, language, options, -1, -1);
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|
}
|
|
|
|
int ast_say_digits(struct ast_channel *chan, int num,
|
|
const char *ints, const char *lang)
|
|
{
|
|
return ast_say_digits_full(chan, num, ints, lang, -1, -1);
|
|
}
|
|
|
|
int ast_say_digit_str(struct ast_channel *chan, const char *str,
|
|
const char *ints, const char *lang)
|
|
{
|
|
return ast_say_digit_str_full(chan, str, ints, lang, -1, -1);
|
|
}
|
|
|
|
int ast_say_character_str(struct ast_channel *chan, const char *str,
|
|
const char *ints, const char *lang)
|
|
{
|
|
return ast_say_character_str_full(chan, str, ints, lang, -1, -1);
|
|
}
|
|
|
|
int ast_say_phonetic_str(struct ast_channel *chan, const char *str,
|
|
const char *ints, const char *lang)
|
|
{
|
|
return ast_say_phonetic_str_full(chan, str, ints, lang, -1, -1);
|
|
}
|
|
|
|
int ast_say_digits_full(struct ast_channel *chan, int num,
|
|
const char *ints, const char *lang, int audiofd, int ctrlfd)
|
|
{
|
|
char buf[256];
|
|
|
|
snprintf(buf, sizeof(buf), "%d", num);
|
|
return ast_say_digit_str_full(chan, buf, ints, lang, audiofd, ctrlfd);
|
|
}
|