Ejemplo n.º 1
0
static struct ast_channel *rec_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, const char *data, int *cause)
{
	struct ast_channel *chan;
	struct ast_format format;
	const char *conf_name = data;

	chan = ast_channel_alloc(1, AST_STATE_UP, NULL, NULL, NULL, NULL, NULL, NULL, 0,
		"CBRec/conf-%s-uid-%d",
		conf_name, (int) ast_random());
	if (!chan) {
		return NULL;
	}
	if (ast_channel_add_bridge_role(chan, "recorder")) {
		ast_channel_release(chan);
		return NULL;
	}
	ast_format_set(&format, AST_FORMAT_SLINEAR, 0);
	ast_channel_tech_set(chan, conf_record_get_tech());
	ast_format_cap_add_all(ast_channel_nativeformats(chan));
	ast_format_copy(ast_channel_writeformat(chan), &format);
	ast_format_copy(ast_channel_rawwriteformat(chan), &format);
	ast_format_copy(ast_channel_readformat(chan), &format);
	ast_format_copy(ast_channel_rawreadformat(chan), &format);
	return chan;
}
Ejemplo n.º 2
0
static int measurenoise(struct ast_channel *chan, int ms, char *who)
{
	int res=0;
	int mssofar;
	int noise=0;
	int samples=0;
	int x;
	short *foo;
	struct timeval start;
	struct ast_frame *f;
	struct ast_format *rformat;

	rformat = ao2_bump(ast_channel_readformat(chan));
	if (ast_set_read_format(chan, ast_format_slin)) {
		ast_log(LOG_NOTICE, "Unable to set to linear mode!\n");
		ao2_cleanup(rformat);
		return -1;
	}
	start = ast_tvnow();
	for(;;) {
		mssofar = ast_tvdiff_ms(ast_tvnow(), start);
		if (mssofar > ms)
			break;
		res = ast_waitfor(chan, ms - mssofar);
		if (res < 1)
			break;
		f = ast_read(chan);
		if (!f) {
			res = -1;
			break;
		}
		if ((f->frametype == AST_FRAME_VOICE) &&
			(ast_format_cmp(f->subclass.format, ast_format_slin) == AST_FORMAT_CMP_EQUAL)) {
			foo = (short *)f->data.ptr;
			for (x=0;x<f->samples;x++) {
				noise += abs(foo[x]);
				samples++;
			}
		}
		ast_frfree(f);
	}

	if (rformat) {
		if (ast_set_read_format(chan, rformat)) {
			ast_log(LOG_NOTICE, "Unable to restore original format!\n");
			ao2_ref(rformat, -1);
			return -1;
		}
		ao2_ref(rformat, -1);
	}
	if (res < 0)
		return res;
	if (!samples) {
		ast_log(LOG_NOTICE, "No samples were received from the other side!\n");
		return -1;
	}
	ast_debug(1, "%s: Noise: %d, samples: %d, avg: %d\n", who, noise, samples, noise / samples);
	return (noise / samples);
}
Ejemplo n.º 3
0
static int serialize_showchan(struct ast_channel *c, char *buf, size_t size)
{
	long elapsed_seconds = 0;
	int hour = 0, min = 0, sec = 0;
	struct ast_str *format_buf = ast_str_alloca(64);
	char cgrp[256];
	char pgrp[256];
	struct ast_str *write_transpath = ast_str_alloca(256);
	struct ast_str *read_transpath = ast_str_alloca(256);
	struct ast_bridge *bridge;

	memset(buf, 0, size);
	if (!c)
		return 0;

	elapsed_seconds = ast_channel_get_duration(c);
	hour = elapsed_seconds / 3600;
	min = (elapsed_seconds % 3600) / 60;
	sec = elapsed_seconds % 60;

	ast_channel_lock(c);
	bridge = ast_channel_get_bridge(c);
	ast_channel_unlock(c);

	snprintf(buf,size,
		"Name=               %s\n"
		"Type=               %s\n"
		"UniqueID=           %s\n"
		"LinkedID=           %s\n"
		"CallerIDNum=        %s\n"
		"CallerIDName=       %s\n"
		"ConnectedLineIDNum= %s\n"
		"ConnectedLineIDName=%s\n"
		"DNIDDigits=         %s\n"
		"RDNIS=              %s\n"
		"Parkinglot=         %s\n"
		"Language=           %s\n"
		"State=              %s (%u)\n"
		"Rings=              %d\n"
		"NativeFormat=       %s\n"
		"WriteFormat=        %s\n"
		"ReadFormat=         %s\n"
		"RawWriteFormat=     %s\n"
		"RawReadFormat=      %s\n"
		"WriteTranscode=     %s %s\n"
		"ReadTranscode=      %s %s\n"
		"1stFileDescriptor=  %d\n"
		"Framesin=           %u %s\n"
		"Framesout=          %u %s\n"
		"TimetoHangup=       %ld\n"
		"ElapsedTime=        %dh%dm%ds\n"
		"BridgeID=           %s\n"
		"Context=            %s\n"
		"Extension=          %s\n"
		"Priority=           %d\n"
		"CallGroup=          %s\n"
		"PickupGroup=        %s\n"
		"Application=        %s\n"
		"Data=               %s\n"
		"Blocking_in=        %s\n",
		ast_channel_name(c),
		ast_channel_tech(c)->type,
		ast_channel_uniqueid(c),
		ast_channel_linkedid(c),
		S_COR(ast_channel_caller(c)->id.number.valid, ast_channel_caller(c)->id.number.str, "(N/A)"),
		S_COR(ast_channel_caller(c)->id.name.valid, ast_channel_caller(c)->id.name.str, "(N/A)"),
		S_COR(ast_channel_connected(c)->id.number.valid, ast_channel_connected(c)->id.number.str, "(N/A)"),
		S_COR(ast_channel_connected(c)->id.name.valid, ast_channel_connected(c)->id.name.str, "(N/A)"),
		S_OR(ast_channel_dialed(c)->number.str, "(N/A)"),
		S_COR(ast_channel_redirecting(c)->from.number.valid, ast_channel_redirecting(c)->from.number.str, "(N/A)"),
		ast_channel_parkinglot(c),
		ast_channel_language(c),
		ast_state2str(ast_channel_state(c)),
		ast_channel_state(c),
		ast_channel_rings(c),
		ast_format_cap_get_names(ast_channel_nativeformats(c), &format_buf),
		ast_format_get_name(ast_channel_writeformat(c)),
		ast_format_get_name(ast_channel_readformat(c)),
		ast_format_get_name(ast_channel_rawwriteformat(c)),
		ast_format_get_name(ast_channel_rawreadformat(c)),
		ast_channel_writetrans(c) ? "Yes" : "No",
		ast_translate_path_to_str(ast_channel_writetrans(c), &write_transpath),
		ast_channel_readtrans(c) ? "Yes" : "No",
		ast_translate_path_to_str(ast_channel_readtrans(c), &read_transpath),
		ast_channel_fd(c, 0),
		ast_channel_fin(c) & ~DEBUGCHAN_FLAG, (ast_channel_fin(c) & DEBUGCHAN_FLAG) ? " (DEBUGGED)" : "",
		ast_channel_fout(c) & ~DEBUGCHAN_FLAG, (ast_channel_fout(c) & DEBUGCHAN_FLAG) ? " (DEBUGGED)" : "",
		(long)ast_channel_whentohangup(c)->tv_sec,
		hour,
		min,
		sec,
		bridge ? bridge->uniqueid : "(Not bridged)",
		ast_channel_context(c),
		ast_channel_exten(c),
		ast_channel_priority(c),
		ast_print_group(cgrp, sizeof(cgrp), ast_channel_callgroup(c)),
		ast_print_group(pgrp, sizeof(pgrp), ast_channel_pickupgroup(c)),
		ast_channel_appl(c) ? ast_channel_appl(c) : "(N/A)",
		ast_channel_data(c) ? S_OR(ast_channel_data(c), "(Empty)") : "(None)",
		(ast_test_flag(ast_channel_flags(c), AST_FLAG_BLOCKING) ? ast_channel_blockproc(c) : "(Not Blocking)"));

	ao2_cleanup(bridge);
	return 0;
}
Ejemplo n.º 4
0
int AST_OPTIONAL_API_NAME(ast_adsi_transmit_message_full)(struct ast_channel *chan, unsigned char *msg, int msglen, int msgtype, int dowait)
{
	unsigned char *msgs[5] = { NULL, NULL, NULL, NULL, NULL };
	int msglens[5], msgtypes[5], newdatamode = (ast_channel_adsicpe(chan) & ADSI_FLAG_DATAMODE), res, x, waitforswitch = 0;
	struct ast_format writeformat;
	struct ast_format readformat;

	ast_format_copy(&writeformat, ast_channel_writeformat(chan));
	ast_format_copy(&readformat, ast_channel_readformat(chan));

	for (x = 0; x < msglen; x += (msg[x+1]+2)) {
		if (msg[x] == ADSI_SWITCH_TO_DATA) {
			ast_debug(1, "Switch to data is sent!\n");
			waitforswitch++;
			newdatamode = ADSI_FLAG_DATAMODE;
		}

		if (msg[x] == ADSI_SWITCH_TO_VOICE) {
			ast_debug(1, "Switch to voice is sent!\n");
			waitforswitch++;
			newdatamode = 0;
		}
	}
	msgs[0] = msg;

	msglens[0] = msglen;
	msgtypes[0] = msgtype;

	if (msglen > 253) {
		ast_log(LOG_WARNING, "Can't send ADSI message of %d bytes, too large\n", msglen);
		return -1;
	}

	ast_stopstream(chan);

	if (ast_set_write_format_by_id(chan, AST_FORMAT_ULAW)) {
		ast_log(LOG_WARNING, "Unable to set write format to ULAW\n");
		return -1;
	}

	if (ast_set_read_format_by_id(chan, AST_FORMAT_ULAW)) {
		ast_log(LOG_WARNING, "Unable to set read format to ULAW\n");
		if (writeformat.id) {
			if (ast_set_write_format(chan, &writeformat)) {
				ast_log(LOG_WARNING, "Unable to restore write format to %s\n", ast_getformatname(&writeformat));
			}
		}
		return -1;
	}
	res = __adsi_transmit_messages(chan, msgs, msglens, msgtypes);

	if (dowait) {
		ast_debug(1, "Wait for switch is '%d'\n", waitforswitch);
		while (waitforswitch-- && ((res = ast_waitfordigit(chan, 1000)) > 0)) {
			res = 0;
			ast_debug(1, "Waiting for 'B'...\n");
		}
	}

	if (!res) {
		ast_channel_adsicpe_set(chan, (ast_channel_adsicpe(chan) & ~ADSI_FLAG_DATAMODE) | newdatamode);
	}

	if (writeformat.id) {
		ast_set_write_format(chan, &writeformat);
	}
	if (readformat.id) {
		ast_set_read_format(chan, &readformat);
	}

	if (!res) {
		res = ast_safe_sleep(chan, 100 );
	}
	return res;
}
Ejemplo n.º 5
0
static int func_channel_read(struct ast_channel *chan, const char *function,
			     char *data, char *buf, size_t len)
{
	int ret = 0;
	struct ast_format_cap *tmpcap;

	if (!chan) {
		ast_log(LOG_WARNING, "No channel was provided to %s function.\n", function);
		return -1;
	}

	if (!strcasecmp(data, "audionativeformat")) {
		tmpcap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
		if (tmpcap) {
			struct ast_str *codec_buf = ast_str_alloca(128);

			ast_channel_lock(chan);
			ast_format_cap_append_from_cap(tmpcap, ast_channel_nativeformats(chan), AST_MEDIA_TYPE_AUDIO);
			ast_channel_unlock(chan);
			ast_copy_string(buf, ast_format_cap_get_names(tmpcap, &codec_buf), len);
			ao2_ref(tmpcap, -1);
		}
	} else if (!strcasecmp(data, "videonativeformat")) {
		tmpcap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
		if (tmpcap) {
			struct ast_str *codec_buf = ast_str_alloca(128);

			ast_channel_lock(chan);
			ast_format_cap_append_from_cap(tmpcap, ast_channel_nativeformats(chan), AST_MEDIA_TYPE_VIDEO);
			ast_channel_unlock(chan);
			ast_copy_string(buf, ast_format_cap_get_names(tmpcap, &codec_buf), len);
			ao2_ref(tmpcap, -1);
		}
	} else if (!strcasecmp(data, "audioreadformat")) {
		locked_copy_string(chan, buf, ast_format_get_name(ast_channel_readformat(chan)), len);
	} else if (!strcasecmp(data, "audiowriteformat")) {
		locked_copy_string(chan, buf, ast_format_get_name(ast_channel_writeformat(chan)), len);
#ifdef CHANNEL_TRACE
	} else if (!strcasecmp(data, "trace")) {
		locked_copy_string(chan, buf, ast_channel_trace_is_enabled(chan) ? "1" : "0", len);
#endif
	} else if (!strcasecmp(data, "tonezone") && ast_channel_zone(chan)) {
		locked_copy_string(chan, buf, ast_channel_zone(chan)->country, len);
	} else if (!strcasecmp(data, "dtmf_features")) {
		if (ast_bridge_features_ds_get_string(chan, buf, len)) {
			buf[0] = '\0';
		}
	} else if (!strcasecmp(data, "language"))
		locked_copy_string(chan, buf, ast_channel_language(chan), len);
	else if (!strcasecmp(data, "musicclass"))
		locked_copy_string(chan, buf, ast_channel_musicclass(chan), len);
	else if (!strcasecmp(data, "name")) {
		locked_copy_string(chan, buf, ast_channel_name(chan), len);
	} else if (!strcasecmp(data, "parkinglot"))
		locked_copy_string(chan, buf, ast_channel_parkinglot(chan), len);
	else if (!strcasecmp(data, "state"))
		locked_copy_string(chan, buf, ast_state2str(ast_channel_state(chan)), len);
	else if (!strcasecmp(data, "onhold")) {
		locked_copy_string(chan, buf,
			ast_channel_hold_state(chan) == AST_CONTROL_HOLD ? "1" : "0", len);
	} else if (!strcasecmp(data, "channeltype"))
		locked_copy_string(chan, buf, ast_channel_tech(chan)->type, len);
	else if (!strcasecmp(data, "accountcode"))
		locked_copy_string(chan, buf, ast_channel_accountcode(chan), len);
	else if (!strcasecmp(data, "checkhangup")) {
		locked_copy_string(chan, buf, ast_check_hangup(chan) ? "1" : "0", len);
	} else if (!strcasecmp(data, "peeraccount"))
		locked_copy_string(chan, buf, ast_channel_peeraccount(chan), len);
	else if (!strcasecmp(data, "hangupsource"))
		locked_copy_string(chan, buf, ast_channel_hangupsource(chan), len);
	else if (!strcasecmp(data, "appname") && ast_channel_appl(chan))
		locked_copy_string(chan, buf, ast_channel_appl(chan), len);
	else if (!strcasecmp(data, "appdata") && ast_channel_data(chan))
		locked_copy_string(chan, buf, ast_channel_data(chan), len);
	else if (!strcasecmp(data, "exten") && ast_channel_data(chan))
		locked_copy_string(chan, buf, ast_channel_exten(chan), len);
	else if (!strcasecmp(data, "context") && ast_channel_data(chan))
		locked_copy_string(chan, buf, ast_channel_context(chan), len);
	else if (!strcasecmp(data, "userfield") && ast_channel_data(chan))
		locked_copy_string(chan, buf, ast_channel_userfield(chan), len);
	else if (!strcasecmp(data, "channame") && ast_channel_data(chan))
		locked_copy_string(chan, buf, ast_channel_name(chan), len);
	else if (!strcasecmp(data, "linkedid")) {
		ast_channel_lock(chan);
		if (ast_strlen_zero(ast_channel_linkedid(chan))) {
			/* fall back on the channel's uniqueid if linkedid is unset */
			ast_copy_string(buf, ast_channel_uniqueid(chan), len);
		}
		else {
			ast_copy_string(buf, ast_channel_linkedid(chan), len);
		}
		ast_channel_unlock(chan);
	} else if (!strcasecmp(data, "peer")) {
		struct ast_channel *peer;

		peer = ast_channel_bridge_peer(chan);
		if (peer) {
			/* Only real channels could have a bridge peer this way. */
			ast_channel_lock(peer);
			ast_copy_string(buf, ast_channel_name(peer), len);
			ast_channel_unlock(peer);
			ast_channel_unref(peer);
		} else {
			buf[0] = '\0';
			ast_channel_lock(chan);
			if (!ast_channel_tech(chan)) {
				const char *pname;

				/*
				 * A dummy channel can still pass along bridged peer info
				 * via the BRIDGEPEER variable.
				 *
				 * A horrible kludge, but... how else?
				 */
				pname = pbx_builtin_getvar_helper(chan, "BRIDGEPEER");
				if (!ast_strlen_zero(pname)) {
					ast_copy_string(buf, pname, len);
				}
			}
			ast_channel_unlock(chan);
		}
	} else if (!strcasecmp(data, "uniqueid")) {
		locked_copy_string(chan, buf, ast_channel_uniqueid(chan), len);
	} else if (!strcasecmp(data, "transfercapability")) {
		locked_copy_string(chan, buf, transfercapability_table[ast_channel_transfercapability(chan) & 0x1f], len);
	} else if (!strcasecmp(data, "callgroup")) {
		char groupbuf[256];

		locked_copy_string(chan, buf,  ast_print_group(groupbuf, sizeof(groupbuf), ast_channel_callgroup(chan)), len);
	} else if (!strcasecmp(data, "pickupgroup")) {
		char groupbuf[256];

		locked_copy_string(chan, buf,  ast_print_group(groupbuf, sizeof(groupbuf), ast_channel_pickupgroup(chan)), len);
	} else if (!strcasecmp(data, "namedcallgroup")) {
		struct ast_str *tmp_str = ast_str_alloca(1024);

		locked_copy_string(chan, buf,  ast_print_namedgroups(&tmp_str, ast_channel_named_callgroups(chan)), len);
	} else if (!strcasecmp(data, "namedpickupgroup")) {
		struct ast_str *tmp_str = ast_str_alloca(1024);

		locked_copy_string(chan, buf,  ast_print_namedgroups(&tmp_str, ast_channel_named_pickupgroups(chan)), len);
	} else if (!strcasecmp(data, "after_bridge_goto")) {
		ast_bridge_read_after_goto(chan, buf, len);
	} else if (!strcasecmp(data, "amaflags")) {
		ast_channel_lock(chan);
		snprintf(buf, len, "%u", ast_channel_amaflags(chan));
		ast_channel_unlock(chan);
	} else if (!strncasecmp(data, "secure_bridge_", 14)) {
		struct ast_datastore *ds;

		buf[0] = '\0';
		ast_channel_lock(chan);
		if ((ds = ast_channel_datastore_find(chan, &secure_call_info, NULL))) {
			struct ast_secure_call_store *encrypt = ds->data;

			if (!strcasecmp(data, "secure_bridge_signaling")) {
				snprintf(buf, len, "%s", encrypt->signaling ? "1" : "");
			} else if (!strcasecmp(data, "secure_bridge_media")) {
				snprintf(buf, len, "%s", encrypt->media ? "1" : "");
			}
		}
		ast_channel_unlock(chan);
	} else if (!strcasecmp(data, "max_forwards")) {
		ast_channel_lock(chan);
		snprintf(buf, len, "%d", ast_max_forwards_get(chan));
		ast_channel_unlock(chan);
	} else if (!ast_channel_tech(chan) || !ast_channel_tech(chan)->func_channel_read || ast_channel_tech(chan)->func_channel_read(chan, function, data, buf, len)) {
		ast_log(LOG_WARNING, "Unknown or unavailable item requested: '%s'\n", data);
		ret = -1;
	}

	return ret;
}
Ejemplo n.º 6
0
/*! \brief Function called when we should prepare to call the destination */
static struct ast_channel *multicast_rtp_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, const char *data, int *cause)
{
	char *tmp = ast_strdupa(data), *multicast_type = tmp, *destination, *control;
	struct ast_rtp_instance *instance;
	struct ast_sockaddr control_address;
	struct ast_sockaddr destination_address;
	struct ast_channel *chan;
	struct ast_format fmt;
	ast_best_codec(cap, &fmt);

	ast_sockaddr_setnull(&control_address);

	/* If no type was given we can't do anything */
	if (ast_strlen_zero(multicast_type)) {
		goto failure;
	}

	if (!(destination = strchr(tmp, '/'))) {
		goto failure;
	}
	*destination++ = '\0';

	if ((control = strchr(destination, '/'))) {
		*control++ = '\0';
		if (!ast_sockaddr_parse(&control_address, control,
					PARSE_PORT_REQUIRE)) {
			goto failure;
		}
	}

	if (!ast_sockaddr_parse(&destination_address, destination,
				PARSE_PORT_REQUIRE)) {
		goto failure;
	}

	if (!(instance = ast_rtp_instance_new("multicast", NULL, &control_address, multicast_type))) {
		goto failure;
	}

	if (!(chan = ast_channel_alloc(1, AST_STATE_DOWN, "", "", "", "", "", requestor ? ast_channel_linkedid(requestor) : "", 0, "MulticastRTP/%p", instance))) {
		ast_rtp_instance_destroy(instance);
		goto failure;
	}
	ast_rtp_instance_set_channel_id(instance, ast_channel_uniqueid(chan));
	ast_rtp_instance_set_remote_address(instance, &destination_address);

	ast_channel_tech_set(chan, &multicast_rtp_tech);

	ast_format_cap_add(ast_channel_nativeformats(chan), &fmt);
	ast_format_copy(ast_channel_writeformat(chan), &fmt);
	ast_format_copy(ast_channel_rawwriteformat(chan), &fmt);
	ast_format_copy(ast_channel_readformat(chan), &fmt);
	ast_format_copy(ast_channel_rawreadformat(chan), &fmt);

	ast_channel_tech_pvt_set(chan, instance);

	return chan;

failure:
	*cause = AST_CAUSE_FAILURE;
	return NULL;
}
Ejemplo n.º 7
0
struct ast_unreal_pvt *ast_unreal_alloc(size_t size, ao2_destructor_fn destructor, struct ast_format_cap *cap)
{
	struct ast_unreal_pvt *unreal;

	static const struct ast_jb_conf jb_conf = {
		.flags = 0,
		.max_size = -1,
		.resync_threshold = -1,
		.impl = "",
		.target_extra = -1,
	};

	unreal = ao2_alloc(size, destructor);
	if (!unreal) {
		return NULL;
	}
	unreal->reqcap = ast_format_cap_dup(cap);
	if (!unreal->reqcap) {
		ao2_ref(unreal, -1);
		return NULL;
	}

	memcpy(&unreal->jb_conf, &jb_conf, sizeof(unreal->jb_conf));

	return unreal;
}

struct ast_channel *ast_unreal_new_channels(struct ast_unreal_pvt *p,
	const struct ast_channel_tech *tech, int semi1_state, int semi2_state,
	const char *exten, const char *context, const struct ast_assigned_ids *assignedids,
	const struct ast_channel *requestor, struct ast_callid *callid)
{
	struct ast_channel *owner;
	struct ast_channel *chan;
	struct ast_format fmt;
	struct ast_assigned_ids id1 = {NULL, NULL};
	struct ast_assigned_ids id2 = {NULL, NULL};
	int generated_seqno = ast_atomic_fetchadd_int((int *) &name_sequence, +1);

	/* set unique ids for the two channels */
	if (assignedids && !ast_strlen_zero(assignedids->uniqueid)) {
		id1.uniqueid = assignedids->uniqueid;
		id2.uniqueid = assignedids->uniqueid2;
	}

	/* if id1 given but not id2, use default of id1;2 */
	if (id1.uniqueid && ast_strlen_zero(id2.uniqueid)) {
		char *uniqueid2;

		uniqueid2 = ast_alloca(strlen(id1.uniqueid) + 2);
		strcpy(uniqueid2, id1.uniqueid);/* Safe */
		strcat(uniqueid2, ";2");/* Safe */
		id2.uniqueid = uniqueid2;
	}

	/*
	 * Allocate two new Asterisk channels
	 *
	 * Make sure that the ;2 channel gets the same linkedid as ;1.
	 * You can't pass linkedid to both allocations since if linkedid
	 * isn't set, then each channel will generate its own linkedid.
	 */
	if (!(owner = ast_channel_alloc(1, semi1_state, NULL, NULL, NULL,
			exten, context, &id1, requestor, 0,
			"%s/%s-%08x;1", tech->type, p->name, generated_seqno))) {
		ast_log(LOG_WARNING, "Unable to allocate owner channel structure\n");
		return NULL;
	}

	if (callid) {
		ast_channel_callid_set(owner, callid);
	}

	ast_channel_tech_set(owner, tech);
	ao2_ref(p, +1);
	ast_channel_tech_pvt_set(owner, p);

	ast_format_cap_copy(ast_channel_nativeformats(owner), p->reqcap);

	/* Determine our read/write format and set it on each channel */
	ast_best_codec(p->reqcap, &fmt);
	ast_format_copy(ast_channel_writeformat(owner), &fmt);
	ast_format_copy(ast_channel_rawwriteformat(owner), &fmt);
	ast_format_copy(ast_channel_readformat(owner), &fmt);
	ast_format_copy(ast_channel_rawreadformat(owner), &fmt);

	ast_set_flag(ast_channel_flags(owner), AST_FLAG_DISABLE_DEVSTATE_CACHE);

	ast_jb_configure(owner, &p->jb_conf);

	if (ast_channel_cc_params_init(owner, requestor
		? ast_channel_get_cc_config_params((struct ast_channel *) requestor) : NULL)) {
		ao2_ref(p, -1);
		ast_channel_unlock(owner);
		ast_channel_release(owner);
		return NULL;
	}

	p->owner = owner;
	ast_channel_unlock(owner);

	if (!(chan = ast_channel_alloc(1, semi2_state, NULL, NULL, NULL,
			exten, context, &id2, owner, 0,
			"%s/%s-%08x;2", tech->type, p->name, generated_seqno))) {
		ast_log(LOG_WARNING, "Unable to allocate chan channel structure\n");
		ao2_ref(p, -1);
		ast_channel_release(owner);
		return NULL;
	}

	if (callid) {
		ast_channel_callid_set(chan, callid);
	}

	ast_channel_tech_set(chan, tech);
	ao2_ref(p, +1);
	ast_channel_tech_pvt_set(chan, p);

	ast_format_cap_copy(ast_channel_nativeformats(chan), p->reqcap);

	/* Format was already determined when setting up owner */
	ast_format_copy(ast_channel_writeformat(chan), &fmt);
	ast_format_copy(ast_channel_rawwriteformat(chan), &fmt);
	ast_format_copy(ast_channel_readformat(chan), &fmt);
	ast_format_copy(ast_channel_rawreadformat(chan), &fmt);

	ast_set_flag(ast_channel_flags(chan), AST_FLAG_DISABLE_DEVSTATE_CACHE);

	p->chan = chan;
	ast_channel_unlock(chan);

	return owner;
}
Ejemplo n.º 8
0
static int set_caps(struct ast_sip_session *session, struct ast_sip_session_media *session_media,
		    const struct pjmedia_sdp_media *stream)
{
	RAII_VAR(struct ast_format_cap *, caps, NULL, ao2_cleanup);
	RAII_VAR(struct ast_format_cap *, peer, NULL, ao2_cleanup);
	RAII_VAR(struct ast_format_cap *, joint, NULL, ao2_cleanup);
	enum ast_media_type media_type = stream_to_media_type(session_media->stream_type);
	struct ast_rtp_codecs codecs = AST_RTP_CODECS_NULL_INIT;
	int fmts = 0;
	int direct_media_enabled = !ast_sockaddr_isnull(&session_media->direct_media_addr) &&
		ast_format_cap_count(session->direct_media_cap);
	int dsp_features = 0;

	if (!(caps = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT)) ||
	    !(peer = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT)) ||
	    !(joint = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
		ast_log(LOG_ERROR, "Failed to allocate %s capabilities\n", session_media->stream_type);
		return -1;
	}

	/* get the endpoint capabilities */
	if (direct_media_enabled) {
		ast_format_cap_get_compatible(session->endpoint->media.codecs, session->direct_media_cap, caps);
		format_cap_only_type(caps, media_type);
	} else {
		ast_format_cap_append_from_cap(caps, session->endpoint->media.codecs, media_type);
	}

	/* get the capabilities on the peer */
	get_codecs(session, stream, &codecs,  session_media);
	ast_rtp_codecs_payload_formats(&codecs, peer, &fmts);

	/* get the joint capabilities between peer and endpoint */
	ast_format_cap_get_compatible(caps, peer, joint);
	if (!ast_format_cap_count(joint)) {
		struct ast_str *usbuf = ast_str_alloca(256);
		struct ast_str *thembuf = ast_str_alloca(256);

		ast_rtp_codecs_payloads_destroy(&codecs);
		ast_log(LOG_NOTICE, "No joint capabilities for '%s' media stream between our configuration(%s) and incoming SDP(%s)\n",
			session_media->stream_type,
			ast_format_cap_get_names(caps, &usbuf),
			ast_format_cap_get_names(peer, &thembuf));
		return -1;
	}

	ast_rtp_codecs_payloads_copy(&codecs, ast_rtp_instance_get_codecs(session_media->rtp),
				     session_media->rtp);

	ast_format_cap_append_from_cap(session->req_caps, joint, AST_MEDIA_TYPE_UNKNOWN);

	if (session->channel) {
		ast_channel_lock(session->channel);
		ast_format_cap_remove_by_type(caps, AST_MEDIA_TYPE_UNKNOWN);
		ast_format_cap_append_from_cap(caps, ast_channel_nativeformats(session->channel),
			AST_MEDIA_TYPE_UNKNOWN);
		ast_format_cap_remove_by_type(caps, media_type);
		ast_format_cap_append_from_cap(caps, joint, media_type);

		/*
		 * Apply the new formats to the channel, potentially changing
		 * raw read/write formats and translation path while doing so.
		 */
		ast_channel_nativeformats_set(session->channel, caps);
		if (media_type == AST_MEDIA_TYPE_AUDIO) {
			ast_set_read_format(session->channel, ast_channel_readformat(session->channel));
			ast_set_write_format(session->channel, ast_channel_writeformat(session->channel));
		}
		if ((session->endpoint->dtmf == AST_SIP_DTMF_AUTO)
		    && (ast_rtp_instance_dtmf_mode_get(session_media->rtp) == AST_RTP_DTMF_MODE_RFC2833)
		    && (session->dsp)) {
			dsp_features = ast_dsp_get_features(session->dsp);
			dsp_features &= ~DSP_FEATURE_DIGIT_DETECT;
			if (dsp_features) {
				ast_dsp_set_features(session->dsp, dsp_features);
			} else {
				ast_dsp_free(session->dsp);
				session->dsp = NULL;
			}
		}
		ast_channel_unlock(session->channel);
	}

	ast_rtp_codecs_payloads_destroy(&codecs);
	return 0;
}
Ejemplo n.º 9
0
	AST_DECLARE_APP_ARGS(args,
		AST_APP_ARG(argInitialSilence);
		AST_APP_ARG(argGreeting);
		AST_APP_ARG(argAfterGreetingSilence);
		AST_APP_ARG(argTotalAnalysisTime);
		AST_APP_ARG(argMinimumWordLength);
		AST_APP_ARG(argBetweenWordsSilence);
		AST_APP_ARG(argMaximumNumberOfWords);
		AST_APP_ARG(argSilenceThreshold);
		AST_APP_ARG(argMaximumWordLength);
	);

	ast_verb(3, "AMD: %s %s %s (Fmt: %s)\n", ast_channel_name(chan),
		S_COR(ast_channel_caller(chan)->ani.number.valid, ast_channel_caller(chan)->ani.number.str, "(N/A)"),
		S_COR(ast_channel_redirecting(chan)->from.number.valid, ast_channel_redirecting(chan)->from.number.str, "(N/A)"),
		ast_format_get_name(ast_channel_readformat(chan)));

	/* Lets parse the arguments. */
	if (!ast_strlen_zero(parse)) {
		/* Some arguments have been passed. Lets parse them and overwrite the defaults. */
		AST_STANDARD_APP_ARGS(args, parse);
		if (!ast_strlen_zero(args.argInitialSilence))
			initialSilence = atoi(args.argInitialSilence);
		if (!ast_strlen_zero(args.argGreeting))
			greeting = atoi(args.argGreeting);
		if (!ast_strlen_zero(args.argAfterGreetingSilence))
			afterGreetingSilence = atoi(args.argAfterGreetingSilence);
		if (!ast_strlen_zero(args.argTotalAnalysisTime))
			totalAnalysisTime = atoi(args.argTotalAnalysisTime);
		if (!ast_strlen_zero(args.argMinimumWordLength))
			minimumWordLength = atoi(args.argMinimumWordLength);
Ejemplo n.º 10
0
static int ices_exec(struct ast_channel *chan, const char *data)
{
	int res = 0;
	int fds[2];
	int ms = -1;
	int pid = -1;
	int flags;
	struct ast_format oreadformat;
	struct ast_frame *f;
	char filename[256]="";
	char *c;

	ast_format_clear(&oreadformat);
	if (ast_strlen_zero(data)) {
		ast_log(LOG_WARNING, "ICES requires an argument (configfile.xml)\n");
		return -1;
	}
	
	if (pipe(fds)) {
		ast_log(LOG_WARNING, "Unable to create pipe\n");
		return -1;
	}
	flags = fcntl(fds[1], F_GETFL);
	fcntl(fds[1], F_SETFL, flags | O_NONBLOCK);
	
	ast_stopstream(chan);

	if (ast_channel_state(chan) != AST_STATE_UP)
		res = ast_answer(chan);
		
	if (res) {
		close(fds[0]);
		close(fds[1]);
		ast_log(LOG_WARNING, "Answer failed!\n");
		return -1;
	}

	ast_format_copy(&oreadformat, ast_channel_readformat(chan));
	res = ast_set_read_format_by_id(chan, AST_FORMAT_SLINEAR);
	if (res < 0) {
		close(fds[0]);
		close(fds[1]);
		ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
		return -1;
	}
	if (((char *)data)[0] == '/')
		ast_copy_string(filename, (char *) data, sizeof(filename));
	else
		snprintf(filename, sizeof(filename), "%s/%s", ast_config_AST_CONFIG_DIR, (char *)data);
	/* Placeholder for options */		
	c = strchr(filename, '|');
	if (c)
		*c = '\0';	
	res = icesencode(filename, fds[0]);
	if (res >= 0) {
		pid = res;
		for (;;) {
			/* Wait for audio, and stream */
			ms = ast_waitfor(chan, -1);
			if (ms < 0) {
				ast_debug(1, "Hangup detected\n");
				res = -1;
				break;
			}
			f = ast_read(chan);
			if (!f) {
				ast_debug(1, "Null frame == hangup() detected\n");
				res = -1;
				break;
			}
			if (f->frametype == AST_FRAME_VOICE) {
				res = write(fds[1], f->data.ptr, f->datalen);
				if (res < 0) {
					if (errno != EAGAIN) {
						ast_log(LOG_WARNING, "Write failed to pipe: %s\n", strerror(errno));
						res = -1;
						ast_frfree(f);
						break;
					}
				}
			}
			ast_frfree(f);
		}
	}
	close(fds[0]);
	close(fds[1]);

	if (pid > -1)
		kill(pid, SIGKILL);
	if (!res && oreadformat.id)
		ast_set_read_format(chan, &oreadformat);

	return res;
}
Ejemplo n.º 11
0
static int do_waiting(struct ast_channel *chan, int timereqd, time_t waitstart, int timeout, int wait_for_silence) {
	struct ast_frame *f = NULL;
	int dsptime = 0;
	RAII_VAR(struct ast_format *, rfmt, NULL, ao2_cleanup);
	int res = 0;
	struct ast_dsp *sildet;	 /* silence detector dsp */
 	time_t now;

	/*Either silence or noise calc depending on wait_for_silence flag*/
	int (*ast_dsp_func)(struct ast_dsp*, struct ast_frame*, int*) =
				wait_for_silence ? ast_dsp_silence : ast_dsp_noise;

	rfmt = ao2_bump(ast_channel_readformat(chan));
	if ((res = ast_set_read_format(chan, ast_format_slin)) < 0) {
		ast_log(LOG_WARNING, "Unable to set channel to linear mode, giving up\n");
		return -1;
	}

	/* Create the silence detector */
	if (!(sildet = ast_dsp_new())) {
		ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
		return -1;
	}
	ast_dsp_set_threshold(sildet, ast_dsp_get_threshold_from_settings(THRESHOLD_SILENCE));

	/* Await silence... */
	for (;;) {
		/* Start with no silence received */
		dsptime = 0;

		res = ast_waitfor(chan, timereqd);

		/* Must have gotten a hangup; let's exit */
		if (res < 0) {
			pbx_builtin_setvar_helper(chan, "WAITSTATUS", "HANGUP");
			break;
		}
		
		/* We waited and got no frame; sounds like digital silence or a muted digital channel */
		if (res == 0) {
			dsptime = timereqd;
		} else {
			/* Looks like we did get a frame, so let's check it out */
			if (!(f = ast_read(chan))) {
				pbx_builtin_setvar_helper(chan, "WAITSTATUS", "HANGUP");
				break;
			}
			if (f->frametype == AST_FRAME_VOICE) {
				ast_dsp_func(sildet, f, &dsptime);
			}
			ast_frfree(f);
		}

		ast_debug(1, "Got %dms %s < %dms required\n", dsptime, wait_for_silence ? "silence" : "noise", timereqd);

		if (dsptime >= timereqd) {
			ast_verb(3, "Exiting with %dms %s >= %dms required\n", dsptime, wait_for_silence ? "silence" : "noise", timereqd);
			/* Ended happily with silence */
			res = 1;
			pbx_builtin_setvar_helper(chan, "WAITSTATUS", wait_for_silence ? "SILENCE" : "NOISE");
			ast_debug(1, "WAITSTATUS was set to %s\n", wait_for_silence ? "SILENCE" : "NOISE");
			break;
		}

		if (timeout && (difftime(time(&now), waitstart) >= timeout)) {
			pbx_builtin_setvar_helper(chan, "WAITSTATUS", "TIMEOUT");
			ast_debug(1, "WAITSTATUS was set to TIMEOUT\n");
			res = 0;
			break;
		}
	}


	if (rfmt && ast_set_read_format(chan, rfmt)) {
		ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_format_get_name(rfmt), ast_channel_name(chan));
	}
	ast_dsp_free(sildet);
	return res;
}
Ejemplo n.º 12
0
int ast_channel_data_add_structure(struct ast_data *tree,
	struct ast_channel *chan, int add_bridged)
{
	struct ast_data *data_bridged;
	struct ast_data *data_cdr;
	struct ast_data *data_flags;
	struct ast_data *data_zones;
	struct ast_data *enum_node;
	struct ast_data *data_softhangup;
#if 0	/* XXX AstData: ast_callerid no longer exists. (Equivalent code not readily apparent.) */
	struct ast_data *data_callerid;
	char value_str[100];
#endif

	if (!tree) {
		return -1;
	}

	ast_data_add_structure(ast_channel, tree, chan);

	if (add_bridged) {
		RAII_VAR(struct ast_channel *, bc, ast_channel_bridge_peer(chan), ast_channel_cleanup);
		if (bc) {
			data_bridged = ast_data_add_node(tree, "bridged");
			if (!data_bridged) {
				return -1;
			}
			ast_channel_data_add_structure(data_bridged, bc, 0);
		}
	}

	ast_data_add_codec(tree, "oldwriteformat", ast_channel_oldwriteformat(chan));
	ast_data_add_codec(tree, "readformat", ast_channel_readformat(chan));
	ast_data_add_codec(tree, "writeformat", ast_channel_writeformat(chan));
	ast_data_add_codec(tree, "rawreadformat", ast_channel_rawreadformat(chan));
	ast_data_add_codec(tree, "rawwriteformat", ast_channel_rawwriteformat(chan));
	ast_data_add_codecs(tree, "nativeformats", ast_channel_nativeformats(chan));

	/* state */
	enum_node = ast_data_add_node(tree, "state");
	if (!enum_node) {
		return -1;
	}
	ast_data_add_str(enum_node, "text", ast_state2str(ast_channel_state(chan)));
	ast_data_add_int(enum_node, "value", ast_channel_state(chan));

	/* hangupcause */
	enum_node = ast_data_add_node(tree, "hangupcause");
	if (!enum_node) {
		return -1;
	}
	ast_data_add_str(enum_node, "text", ast_cause2str(ast_channel_hangupcause(chan)));
	ast_data_add_int(enum_node, "value", ast_channel_hangupcause(chan));

	/* amaflags */
	enum_node = ast_data_add_node(tree, "amaflags");
	if (!enum_node) {
		return -1;
	}
	ast_data_add_str(enum_node, "text", ast_channel_amaflags2string(ast_channel_amaflags(chan)));
	ast_data_add_int(enum_node, "value", ast_channel_amaflags(chan));

	/* transfercapability */
	enum_node = ast_data_add_node(tree, "transfercapability");
	if (!enum_node) {
		return -1;
	}
	ast_data_add_str(enum_node, "text", ast_transfercapability2str(ast_channel_transfercapability(chan)));
	ast_data_add_int(enum_node, "value", ast_channel_transfercapability(chan));

	/* _softphangup */
	data_softhangup = ast_data_add_node(tree, "softhangup");
	if (!data_softhangup) {
		return -1;
	}
	ast_data_add_bool(data_softhangup, "dev", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_DEV);
	ast_data_add_bool(data_softhangup, "asyncgoto", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_ASYNCGOTO);
	ast_data_add_bool(data_softhangup, "shutdown", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_SHUTDOWN);
	ast_data_add_bool(data_softhangup, "timeout", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_TIMEOUT);
	ast_data_add_bool(data_softhangup, "appunload", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_APPUNLOAD);
	ast_data_add_bool(data_softhangup, "explicit", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_EXPLICIT);
	ast_data_add_bool(data_softhangup, "unbridge", ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_UNBRIDGE);

	/* channel flags */
	data_flags = ast_data_add_node(tree, "flags");
	if (!data_flags) {
		return -1;
	}
	channel_data_add_flags(data_flags, chan);

	ast_data_add_uint(tree, "timetohangup", ast_channel_whentohangup(chan)->tv_sec);

#if 0	/* XXX AstData: ast_callerid no longer exists. (Equivalent code not readily apparent.) */
	/* callerid */
	data_callerid = ast_data_add_node(tree, "callerid");
	if (!data_callerid) {
		return -1;
	}
	ast_data_add_structure(ast_callerid, data_callerid, &(chan->cid));
	/* insert the callerid ton */
	enum_node = ast_data_add_node(data_callerid, "cid_ton");
	if (!enum_node) {
		return -1;
	}
	ast_data_add_int(enum_node, "value", chan->cid.cid_ton);
	snprintf(value_str, sizeof(value_str), "TON: %s/Plan: %s",
		party_number_ton2str(chan->cid.cid_ton),
		party_number_plan2str(chan->cid.cid_ton));
	ast_data_add_str(enum_node, "text", value_str);
#endif

	/* tone zone */
	if (ast_channel_zone(chan)) {
		data_zones = ast_data_add_node(tree, "zone");
		if (!data_zones) {
			return -1;
		}
		ast_tone_zone_data_add_structure(data_zones, ast_channel_zone(chan));
	}

	/* insert cdr */
	data_cdr = ast_data_add_node(tree, "cdr");
	if (!data_cdr) {
		return -1;
	}

	return 0;
}
Ejemplo n.º 13
0
struct ast_channel_snapshot *ast_channel_snapshot_create(struct ast_channel *chan)
{
	struct ast_channel_snapshot *snapshot;
	struct ast_bridge *bridge;
	char nativeformats[256];
	struct ast_str *write_transpath = ast_str_alloca(256);
	struct ast_str *read_transpath = ast_str_alloca(256);
	struct ast_party_id effective_connected_id;
	struct ast_callid *callid;

	/* no snapshots for dummy channels */
	if (!ast_channel_tech(chan)) {
		return NULL;
	}

	snapshot = ao2_alloc(sizeof(*snapshot), channel_snapshot_dtor);
	if (!snapshot || ast_string_field_init(snapshot, 1024)) {
		ao2_cleanup(snapshot);
		return NULL;
	}

	ast_string_field_set(snapshot, name, ast_channel_name(chan));
	ast_string_field_set(snapshot, type, ast_channel_tech(chan)->type);
	ast_string_field_set(snapshot, accountcode, ast_channel_accountcode(chan));
	ast_string_field_set(snapshot, peeraccount, ast_channel_peeraccount(chan));
	ast_string_field_set(snapshot, userfield, ast_channel_userfield(chan));
	ast_string_field_set(snapshot, uniqueid, ast_channel_uniqueid(chan));
	ast_string_field_set(snapshot, linkedid, ast_channel_linkedid(chan));
	ast_string_field_set(snapshot, hangupsource, ast_channel_hangupsource(chan));
	if (ast_channel_appl(chan)) {
		ast_string_field_set(snapshot, appl, ast_channel_appl(chan));
	}
	if (ast_channel_data(chan)) {
		ast_string_field_set(snapshot, data, ast_channel_data(chan));
	}
	ast_string_field_set(snapshot, context, ast_channel_context(chan));
	ast_string_field_set(snapshot, exten, ast_channel_exten(chan));

	ast_string_field_set(snapshot, caller_name,
		S_COR(ast_channel_caller(chan)->id.name.valid, ast_channel_caller(chan)->id.name.str, ""));
	ast_string_field_set(snapshot, caller_number,
		S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, ""));
	ast_string_field_set(snapshot, caller_dnid, S_OR(ast_channel_dialed(chan)->number.str, ""));
	ast_string_field_set(snapshot, caller_subaddr,
		S_COR(ast_channel_caller(chan)->id.subaddress.valid, ast_channel_caller(chan)->id.subaddress.str, ""));
	ast_string_field_set(snapshot, dialed_subaddr,
		S_COR(ast_channel_dialed(chan)->subaddress.valid, ast_channel_dialed(chan)->subaddress.str, ""));
	ast_string_field_set(snapshot, caller_ani,
		S_COR(ast_channel_caller(chan)->ani.number.valid, ast_channel_caller(chan)->ani.number.str, ""));
	ast_string_field_set(snapshot, caller_rdnis,
		S_COR(ast_channel_redirecting(chan)->from.number.valid, ast_channel_redirecting(chan)->from.number.str, ""));
	ast_string_field_set(snapshot, caller_dnid,
		S_OR(ast_channel_dialed(chan)->number.str, ""));

	ast_string_field_set(snapshot, connected_name,
		S_COR(ast_channel_connected(chan)->id.name.valid, ast_channel_connected(chan)->id.name.str, ""));
	ast_string_field_set(snapshot, connected_number,
		S_COR(ast_channel_connected(chan)->id.number.valid, ast_channel_connected(chan)->id.number.str, ""));
	ast_string_field_set(snapshot, language, ast_channel_language(chan));

	if ((bridge = ast_channel_get_bridge(chan))) {
		ast_string_field_set(snapshot, bridgeid, bridge->uniqueid);
		ao2_cleanup(bridge);
	}

	ast_string_field_set(snapshot, nativeformats, ast_getformatname_multiple(nativeformats, sizeof(nativeformats),
		ast_channel_nativeformats(chan)));
	ast_string_field_set(snapshot, readformat, ast_getformatname(ast_channel_readformat(chan)));
	ast_string_field_set(snapshot, writeformat, ast_getformatname(ast_channel_writeformat(chan)));
	ast_string_field_set(snapshot, writetrans, ast_translate_path_to_str(ast_channel_writetrans(chan), &write_transpath));
	ast_string_field_set(snapshot, readtrans, ast_translate_path_to_str(ast_channel_readtrans(chan), &read_transpath));

	effective_connected_id = ast_channel_connected_effective_id(chan);
	ast_string_field_set(snapshot, effective_name,
		S_COR(effective_connected_id.name.valid, effective_connected_id.name.str, ""));
	ast_string_field_set(snapshot, effective_number,
		S_COR(effective_connected_id.number.valid, effective_connected_id.number.str, ""));

	if ((callid = ast_channel_callid(chan))) {
		ast_callid_strnprint(snapshot->callid, sizeof(snapshot->callid), callid);
		ast_callid_unref(callid);
	}

	snapshot->creationtime = ast_channel_creationtime(chan);
	snapshot->hanguptime = *(ast_channel_whentohangup(chan));
	snapshot->state = ast_channel_state(chan);
	snapshot->priority = ast_channel_priority(chan);
	snapshot->amaflags = ast_channel_amaflags(chan);
	snapshot->hangupcause = ast_channel_hangupcause(chan);
	ast_copy_flags(&snapshot->flags, ast_channel_flags(chan), 0xFFFFFFFF);
	snapshot->caller_pres = ast_party_id_presentation(&ast_channel_caller(chan)->id);
	snapshot->callgroup = ast_channel_callgroup(chan);
	snapshot->pickupgroup = ast_channel_pickupgroup(chan);
	ast_set_flag(&snapshot->softhangup_flags, ast_channel_softhangup_internal_flag(chan));

	snapshot->manager_vars = ast_channel_get_manager_vars(chan);
	snapshot->channel_vars = ast_channel_get_vars(chan);
	snapshot->tech_properties = ast_channel_tech(chan)->properties;

	return snapshot;
}
Ejemplo n.º 14
0
		AST_APP_ARG(argInitialSilence);
		AST_APP_ARG(argGreeting);
		AST_APP_ARG(argAfterGreetingSilence);
		AST_APP_ARG(argTotalAnalysisTime);
		AST_APP_ARG(argMinimumWordLength);
		AST_APP_ARG(argBetweenWordsSilence);
		AST_APP_ARG(argMaximumNumberOfWords);
		AST_APP_ARG(argSilenceThreshold);
		AST_APP_ARG(argMaximumWordLength);
	);

	ast_format_clear(&readFormat);
	ast_verb(3, "AMD: %s %s %s (Fmt: %s)\n", ast_channel_name(chan),
		S_COR(ast_channel_caller(chan)->ani.number.valid, ast_channel_caller(chan)->ani.number.str, "(N/A)"),
		S_COR(ast_channel_redirecting(chan)->from.number.valid, ast_channel_redirecting(chan)->from.number.str, "(N/A)"),
		ast_getformatname(ast_channel_readformat(chan)));

	/* Lets parse the arguments. */
	if (!ast_strlen_zero(parse)) {
		/* Some arguments have been passed. Lets parse them and overwrite the defaults. */
		AST_STANDARD_APP_ARGS(args, parse);
		if (!ast_strlen_zero(args.argInitialSilence))
			initialSilence = atoi(args.argInitialSilence);
		if (!ast_strlen_zero(args.argGreeting))
			greeting = atoi(args.argGreeting);
		if (!ast_strlen_zero(args.argAfterGreetingSilence))
			afterGreetingSilence = atoi(args.argAfterGreetingSilence);
		if (!ast_strlen_zero(args.argTotalAnalysisTime))
			totalAnalysisTime = atoi(args.argTotalAnalysisTime);
		if (!ast_strlen_zero(args.argMinimumWordLength))
			minimumWordLength = atoi(args.argMinimumWordLength);
Ejemplo n.º 15
0
static int set_caps(struct ast_sip_session *session, struct ast_sip_session_media *session_media,
		    const struct pjmedia_sdp_media *stream)
{
	RAII_VAR(struct ast_format_cap *, caps, NULL, ast_format_cap_destroy);
	RAII_VAR(struct ast_format_cap *, peer, NULL, ast_format_cap_destroy);
	RAII_VAR(struct ast_format_cap *, joint, NULL, ast_format_cap_destroy);
	enum ast_format_type media_type = stream_to_media_type(session_media->stream_type);
	struct ast_rtp_codecs codecs;
	struct ast_format fmt;
	int fmts = 0;
	int direct_media_enabled = !ast_sockaddr_isnull(&session_media->direct_media_addr) &&
		!ast_format_cap_is_empty(session->direct_media_cap);

	if (!(caps = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK)) ||
	    !(peer = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK))) {
		ast_log(LOG_ERROR, "Failed to allocate %s capabilities\n", session_media->stream_type);
		return -1;
	}

	/* get the endpoint capabilities */
	if (direct_media_enabled) {
		ast_format_cap_joint_copy(session->endpoint->media.codecs, session->direct_media_cap, caps);
	} else {
		ast_format_cap_copy(caps, session->endpoint->media.codecs);
	}
	format_cap_only_type(caps, media_type);

	/* get the capabilities on the peer */
	get_codecs(session, stream, &codecs);
	ast_rtp_codecs_payload_formats(&codecs, peer, &fmts);

	/* get the joint capabilities between peer and endpoint */
	if (!(joint = ast_format_cap_joint(caps, peer))) {
		char usbuf[64], thembuf[64];

		ast_rtp_codecs_payloads_destroy(&codecs);

		ast_getformatname_multiple(usbuf, sizeof(usbuf), caps);
		ast_getformatname_multiple(thembuf, sizeof(thembuf), peer);
		ast_log(LOG_WARNING, "No joint capabilities between our configuration(%s) and incoming SDP(%s)\n", usbuf, thembuf);
		return -1;
	}

	ast_rtp_codecs_payloads_copy(&codecs, ast_rtp_instance_get_codecs(session_media->rtp),
				     session_media->rtp);

	ast_format_cap_copy(caps, session->req_caps);
	ast_format_cap_remove_bytype(caps, media_type);
	ast_format_cap_append(caps, joint);
	ast_format_cap_append(session->req_caps, caps);

	if (session->channel) {
		ast_format_cap_copy(caps, ast_channel_nativeformats(session->channel));
		ast_format_cap_remove_bytype(caps, media_type);
		ast_codec_choose(&session->endpoint->media.prefs, joint, 1, &fmt);
		ast_format_cap_add(caps, &fmt);

		/* Apply the new formats to the channel, potentially changing read/write formats while doing so */
		ast_format_cap_copy(ast_channel_nativeformats(session->channel), caps);
		ast_set_read_format(session->channel, ast_channel_readformat(session->channel));
		ast_set_write_format(session->channel, ast_channel_writeformat(session->channel));
	}

	ast_rtp_codecs_payloads_destroy(&codecs);
	return 0;
}
Ejemplo n.º 16
0
/*!
 * \brief This is the main function called by Asterisk Core whenever the App is invoked in the extension logic.
 *
 * \param chan Asterisk Channel
 * \param data Application data
 *
 * \retval 0 success
 * \retval -1 failure
 */
static int alarmreceiver_exec(struct ast_channel *chan, const char *data)
{
	int res = 0;
	int no_checksum = 0;
	event_node_t *elp, *efree;
	char signalling_type[64] = "";
	event_node_t *event_head = NULL;

	if ((ast_format_cmp(ast_channel_writeformat(chan), ast_format_ulaw) == AST_FORMAT_CMP_NOT_EQUAL) &&
		(ast_format_cmp(ast_channel_writeformat(chan), ast_format_alaw) == AST_FORMAT_CMP_NOT_EQUAL)) {
		ast_verb(4, "AlarmReceiver: Setting write format to Mu-law\n");
		if (ast_set_write_format(chan, ast_format_ulaw)) {
			ast_log(LOG_WARNING, "AlarmReceiver: Unable to set write format to Mu-law on %s\n",ast_channel_name(chan));
			return -1;
		}
	}

	if ((ast_format_cmp(ast_channel_readformat(chan), ast_format_ulaw) == AST_FORMAT_CMP_NOT_EQUAL) &&
		(ast_format_cmp(ast_channel_readformat(chan), ast_format_alaw) == AST_FORMAT_CMP_NOT_EQUAL)) {
		ast_verb(4, "AlarmReceiver: Setting read format to Mu-law\n");
		if (ast_set_read_format(chan, ast_format_ulaw)) {
			ast_log(LOG_WARNING, "AlarmReceiver: Unable to set read format to Mu-law on %s\n",ast_channel_name(chan));
			return -1;
		}
	}

	/* Set default values for this invocation of the application */
	ast_copy_string(signalling_type, UNKNOWN_FORMAT, sizeof(signalling_type));
	call_start_time = ast_tvnow();

	/* Answer the channel if it is not already */
	if (ast_channel_state(chan) != AST_STATE_UP) {
		ast_verb(4, "AlarmReceiver: Answering channel\n");
		if (ast_answer(chan)) {
			return -1;
		}
	}

	/* Wait for the connection to settle post-answer */
	ast_verb(4, "AlarmReceiver: Waiting for connection to stabilize\n");
	if (ast_safe_sleep(chan, answait)) {
		return -1;
	}

	/* Attempt to receive the events */
	receive_ademco_event(chan, &event_head, signalling_type, &no_checksum);

	/* Events queued by receiver, write them all out here if so configured */
	if (!log_individual_events) {
		res = log_events(chan, signalling_type, event_head, no_checksum);
	}

	/* Do we exec a command line at the end? */
	if ((!res) && (!ast_strlen_zero(event_app)) && (event_head)) {
		ast_debug(1,"Alarmreceiver: executing: %s\n", event_app);
		ast_safe_system(event_app);
	}

	/* Free up the data allocated in our linked list */
	for (elp = event_head; (elp != NULL);) {
		efree = elp;
		elp = elp->next;
		ast_free(efree);
	}

	return 0;
}
Ejemplo n.º 17
0
static int transmit_audio(fax_session *s)
{
	int res = -1;
	struct ast_format original_read_fmt;
	struct ast_format original_write_fmt;
	fax_state_t fax;
	t30_state_t *t30state;
	struct ast_frame *inf = NULL;
	int last_state = 0;
	struct timeval now, start, state_change;
	enum ast_t38_state t38_state;
	struct ast_control_t38_parameters t38_parameters = { .version = 0,
							     .max_ifp = 800,
							     .rate = AST_T38_RATE_14400,
							     .rate_management = AST_T38_RATE_MANAGEMENT_TRANSFERRED_TCF,
							     .fill_bit_removal = 1,
/*
 * spandsp has API calls to support MMR and JBIG transcoding, but they aren't
 * implemented quite yet... so don't offer them to the remote endpoint
 *							     .transcoding_mmr = 1,
 *							     .transcoding_jbig = 1,
*/
	};

	ast_format_clear(&original_read_fmt);
	ast_format_clear(&original_write_fmt);

	/* if in called party mode, try to use T.38 */
	if (s->caller_mode == FALSE) {
		/* check if we are already in T.38 mode (unlikely), or if we can request
		 * a switch... if so, request it now and wait for the result, rather
		 * than starting an audio FAX session that will have to be cancelled
		 */
		if ((t38_state = ast_channel_get_t38_state(s->chan)) == T38_STATE_NEGOTIATED) {
			return 1;
		} else if ((t38_state != T38_STATE_UNAVAILABLE) &&
			   (t38_parameters.request_response = AST_T38_REQUEST_NEGOTIATE,
			    (ast_indicate_data(s->chan, AST_CONTROL_T38_PARAMETERS, &t38_parameters, sizeof(t38_parameters)) == 0))) {
			/* wait up to five seconds for negotiation to complete */
			unsigned int timeout = 5000;
			int ms;

			ast_debug(1, "Negotiating T.38 for receive on %s\n", ast_channel_name(s->chan));
			while (timeout > 0) {
				ms = ast_waitfor(s->chan, 1000);
				if (ms < 0) {
					ast_log(LOG_WARNING, "something bad happened while channel '%s' was polling.\n", ast_channel_name(s->chan));
					return -1;
				}
				if (!ms) {
					/* nothing happened */
					if (timeout > 0) {
						timeout -= 1000;
						continue;
					} else {
						ast_log(LOG_WARNING, "channel '%s' timed-out during the T.38 negotiation.\n", ast_channel_name(s->chan));
						break;
					}
				}
				if (!(inf = ast_read(s->chan))) {
					return -1;
				}
				if ((inf->frametype == AST_FRAME_CONTROL) &&
				    (inf->subclass.integer == AST_CONTROL_T38_PARAMETERS) &&
				    (inf->datalen == sizeof(t38_parameters))) {
					struct ast_control_t38_parameters *parameters = inf->data.ptr;

					switch (parameters->request_response) {
					case AST_T38_NEGOTIATED:
						ast_debug(1, "Negotiated T.38 for receive on %s\n", ast_channel_name(s->chan));
						res = 1;
						break;
					case AST_T38_REFUSED:
						ast_log(LOG_WARNING, "channel '%s' refused to negotiate T.38\n", ast_channel_name(s->chan));
						break;
					default:
						ast_log(LOG_ERROR, "channel '%s' failed to negotiate T.38\n", ast_channel_name(s->chan));
						break;
					}
					ast_frfree(inf);
					if (res == 1) {
						return 1;
					} else {
						break;
					}
				}
				ast_frfree(inf);
			}
		}
	}

#if SPANDSP_RELEASE_DATE >= 20080725
        /* for spandsp shaphots 0.0.6 and higher */
        t30state = &fax.t30;
#else
        /* for spandsp release 0.0.5 */
        t30state = &fax.t30_state;
#endif

	ast_format_copy(&original_read_fmt, ast_channel_readformat(s->chan));
	if (original_read_fmt.id != AST_FORMAT_SLINEAR) {
		res = ast_set_read_format_by_id(s->chan, AST_FORMAT_SLINEAR);
		if (res < 0) {
			ast_log(LOG_WARNING, "Unable to set to linear read mode, giving up\n");
			goto done;
		}
	}

	ast_format_copy(&original_write_fmt, ast_channel_writeformat(s->chan));
	if (original_write_fmt.id != AST_FORMAT_SLINEAR) {
		res = ast_set_write_format_by_id(s->chan, AST_FORMAT_SLINEAR);
		if (res < 0) {
			ast_log(LOG_WARNING, "Unable to set to linear write mode, giving up\n");
			goto done;
		}
	}

	/* Initialize T30 terminal */
	fax_init(&fax, s->caller_mode);

	/* Setup logging */
	set_logging(&fax.logging);
	set_logging(&t30state->logging);

	/* Configure terminal */
	set_local_info(t30state, s);
	set_file(t30state, s);
	set_ecm(t30state, TRUE);

	fax_set_transmit_on_idle(&fax, TRUE);

	t30_set_phase_e_handler(t30state, phase_e_handler, s);

	start = state_change = ast_tvnow();

	ast_activate_generator(s->chan, &generator, &fax);

	while (!s->finished) {
		inf = NULL;

		if ((res = ast_waitfor(s->chan, 25)) < 0) {
			ast_debug(1, "Error waiting for a frame\n");
			break;
		}

		/* Watchdog */
		now = ast_tvnow();
		if (ast_tvdiff_sec(now, start) > WATCHDOG_TOTAL_TIMEOUT || ast_tvdiff_sec(now, state_change) > WATCHDOG_STATE_TIMEOUT) {
			ast_log(LOG_WARNING, "It looks like we hung. Aborting.\n");
			res = -1;
			break;
		}

		if (!res) {
			/* There was timeout waiting for a frame. Loop around and wait again */
			continue;
		}

		/* There is a frame available. Get it */
		res = 0;

		if (!(inf = ast_read(s->chan))) {
			ast_debug(1, "Channel hangup\n");
			res = -1;
			break;
		}

		ast_debug(10, "frame %d/%u, len=%d\n", inf->frametype, (unsigned int) inf->subclass.format.id, inf->datalen);

		/* Check the frame type. Format also must be checked because there is a chance
		   that a frame in old format was already queued before we set channel format
		   to slinear so it will still be received by ast_read */
		if (inf->frametype == AST_FRAME_VOICE && inf->subclass.format.id == AST_FORMAT_SLINEAR) {
			if (fax_rx(&fax, inf->data.ptr, inf->samples) < 0) {
				/* I know fax_rx never returns errors. The check here is for good style only */
				ast_log(LOG_WARNING, "fax_rx returned error\n");
				res = -1;
				break;
			}
			if (last_state != t30state->state) {
				state_change = ast_tvnow();
				last_state = t30state->state;
			}
		} else if ((inf->frametype == AST_FRAME_CONTROL) &&
			   (inf->subclass.integer == AST_CONTROL_T38_PARAMETERS)) {
			struct ast_control_t38_parameters *parameters = inf->data.ptr;

			if (parameters->request_response == AST_T38_NEGOTIATED) {
				/* T38 switchover completed */
				s->t38parameters = *parameters;
				ast_debug(1, "T38 negotiated, finishing audio loop\n");
				res = 1;
				break;
			} else if (parameters->request_response == AST_T38_REQUEST_NEGOTIATE) {
				t38_parameters.request_response = AST_T38_NEGOTIATED;
				ast_debug(1, "T38 request received, accepting\n");
				/* Complete T38 switchover */
				ast_indicate_data(s->chan, AST_CONTROL_T38_PARAMETERS, &t38_parameters, sizeof(t38_parameters));
				/* Do not break audio loop, wait until channel driver finally acks switchover
				 * with AST_T38_NEGOTIATED
				 */
			}
		}

		ast_frfree(inf);
		inf = NULL;
	}

	ast_debug(1, "Loop finished, res=%d\n", res);

	if (inf)
		ast_frfree(inf);

	ast_deactivate_generator(s->chan);

	/* If we are switching to T38, remove phase E handler. Otherwise it will be executed
	   by t30_terminate, display diagnostics and set status variables although no transmittion
	   has taken place yet. */
	if (res > 0) {
		t30_set_phase_e_handler(t30state, NULL, NULL);
	}

	t30_terminate(t30state);
	fax_release(&fax);

done:
	if (original_write_fmt.id != AST_FORMAT_SLINEAR) {
		if (ast_set_write_format(s->chan, &original_write_fmt) < 0)
			ast_log(LOG_WARNING, "Unable to restore write format on '%s'\n", ast_channel_name(s->chan));
	}

	if (original_read_fmt.id != AST_FORMAT_SLINEAR) {
		if (ast_set_read_format(s->chan, &original_read_fmt) < 0)
			ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", ast_channel_name(s->chan));
	}

	return res;

}

static int transmit_t38(fax_session *s)
{
	int res = 0;
	t38_terminal_state_t t38;
	struct ast_frame *inf = NULL;
	int last_state = 0;
	struct timeval now, start, state_change, last_frame;
	t30_state_t *t30state;
	t38_core_state_t *t38state;

#if SPANDSP_RELEASE_DATE >= 20080725
	/* for spandsp shaphots 0.0.6 and higher */
	t30state = &t38.t30;
	t38state = &t38.t38_fe.t38;
#else
	/* for spandsp releases 0.0.5 */
	t30state = &t38.t30_state;
	t38state = &t38.t38;
#endif

	/* Initialize terminal */
	memset(&t38, 0, sizeof(t38));
	if (t38_terminal_init(&t38, s->caller_mode, t38_tx_packet_handler, s->chan) == NULL) {
		ast_log(LOG_WARNING, "Unable to start T.38 termination.\n");
		res = -1;
		goto disable_t38;
	}

	t38_set_max_datagram_size(t38state, s->t38parameters.max_ifp);

	if (s->t38parameters.fill_bit_removal) {
		t38_set_fill_bit_removal(t38state, TRUE);
	}
	if (s->t38parameters.transcoding_mmr) {
		t38_set_mmr_transcoding(t38state, TRUE);
	}
	if (s->t38parameters.transcoding_jbig) {
		t38_set_jbig_transcoding(t38state, TRUE);
	}

	/* Setup logging */
	set_logging(&t38.logging);
	set_logging(&t30state->logging);
	set_logging(&t38state->logging);

	/* Configure terminal */
	set_local_info(t30state, s);
	set_file(t30state, s);
	set_ecm(t30state, TRUE);

	t30_set_phase_e_handler(t30state, phase_e_handler, s);

	now = start = state_change = ast_tvnow();

	while (!s->finished) {
		inf = NULL;

		if ((res = ast_waitfor(s->chan, 25)) < 0) {
			ast_debug(1, "Error waiting for a frame\n");
			break;
		}

		last_frame = now;

		/* Watchdog */
		now = ast_tvnow();
		if (ast_tvdiff_sec(now, start) > WATCHDOG_TOTAL_TIMEOUT || ast_tvdiff_sec(now, state_change) > WATCHDOG_STATE_TIMEOUT) {
			ast_log(LOG_WARNING, "It looks like we hung. Aborting.\n");
			res = -1;
			break;
		}

		t38_terminal_send_timeout(&t38, ast_tvdiff_us(now, last_frame) / (1000000 / 8000));

		if (!res) {
			/* There was timeout waiting for a frame. Loop around and wait again */
			continue;
		}

		/* There is a frame available. Get it */
		res = 0;

		if (!(inf = ast_read(s->chan))) {
			ast_debug(1, "Channel hangup\n");
			res = -1;
			break;
		}

		ast_debug(10, "frame %d/%d, len=%d\n", inf->frametype, inf->subclass.integer, inf->datalen);

		if (inf->frametype == AST_FRAME_MODEM && inf->subclass.integer == AST_MODEM_T38) {
			t38_core_rx_ifp_packet(t38state, inf->data.ptr, inf->datalen, inf->seqno);
			if (last_state != t30state->state) {
				state_change = ast_tvnow();
				last_state = t30state->state;
			}
		} else if (inf->frametype == AST_FRAME_CONTROL && inf->subclass.integer == AST_CONTROL_T38_PARAMETERS) {
			struct ast_control_t38_parameters *parameters = inf->data.ptr;
			if (parameters->request_response == AST_T38_TERMINATED) {
				ast_debug(1, "T38 down, finishing\n");
				break;
			}
		}

		ast_frfree(inf);
		inf = NULL;
	}

	ast_debug(1, "Loop finished, res=%d\n", res);

	if (inf)
		ast_frfree(inf);

	t30_terminate(t30state);
	t38_terminal_release(&t38);

disable_t38:
	/* if we are not the caller, it's our job to shut down the T.38
	 * session when the FAX transmisson is complete.
	 */
	if ((s->caller_mode == FALSE) &&
	    (ast_channel_get_t38_state(s->chan) == T38_STATE_NEGOTIATED)) {
		struct ast_control_t38_parameters t38_parameters = { .request_response = AST_T38_REQUEST_TERMINATE, };

		if (ast_indicate_data(s->chan, AST_CONTROL_T38_PARAMETERS, &t38_parameters, sizeof(t38_parameters)) == 0) {
			/* wait up to five seconds for negotiation to complete */
			unsigned int timeout = 5000;
			int ms;

			ast_debug(1, "Shutting down T.38 on %s\n", ast_channel_name(s->chan));
			while (timeout > 0) {
				ms = ast_waitfor(s->chan, 1000);
				if (ms < 0) {
					ast_log(LOG_WARNING, "something bad happened while channel '%s' was polling.\n", ast_channel_name(s->chan));
					return -1;
				}
				if (!ms) {
					/* nothing happened */
					if (timeout > 0) {
						timeout -= 1000;
						continue;
					} else {
						ast_log(LOG_WARNING, "channel '%s' timed-out during the T.38 shutdown.\n", ast_channel_name(s->chan));
						break;
					}
				}
				if (!(inf = ast_read(s->chan))) {
					return -1;
				}
				if ((inf->frametype == AST_FRAME_CONTROL) &&
				    (inf->subclass.integer == AST_CONTROL_T38_PARAMETERS) &&
				    (inf->datalen == sizeof(t38_parameters))) {
					struct ast_control_t38_parameters *parameters = inf->data.ptr;

					switch (parameters->request_response) {
					case AST_T38_TERMINATED:
						ast_debug(1, "Shut down T.38 on %s\n", ast_channel_name(s->chan));
						break;
					case AST_T38_REFUSED:
						ast_log(LOG_WARNING, "channel '%s' refused to disable T.38\n", ast_channel_name(s->chan));
						break;
					default:
						ast_log(LOG_ERROR, "channel '%s' failed to disable T.38\n", ast_channel_name(s->chan));
						break;
					}
					ast_frfree(inf);
					break;
				}
				ast_frfree(inf);
			}
		}
	}

	return res;
}
Ejemplo n.º 18
0
static int set_caps(struct ast_sip_session *session, struct ast_sip_session_media *session_media,
		    const struct pjmedia_sdp_media *stream)
{
	RAII_VAR(struct ast_format_cap *, caps, NULL, ao2_cleanup);
	RAII_VAR(struct ast_format_cap *, peer, NULL, ao2_cleanup);
	RAII_VAR(struct ast_format_cap *, joint, NULL, ao2_cleanup);
	enum ast_media_type media_type = stream_to_media_type(session_media->stream_type);
	struct ast_rtp_codecs codecs = AST_RTP_CODECS_NULL_INIT;
	int fmts = 0;
	int direct_media_enabled = !ast_sockaddr_isnull(&session_media->direct_media_addr) &&
		ast_format_cap_count(session->direct_media_cap);

	if (!(caps = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT)) ||
	    !(peer = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT)) ||
	    !(joint = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
		ast_log(LOG_ERROR, "Failed to allocate %s capabilities\n", session_media->stream_type);
		return -1;
	}

	/* get the endpoint capabilities */
	if (direct_media_enabled) {
		ast_format_cap_get_compatible(session->endpoint->media.codecs, session->direct_media_cap, caps);
		format_cap_only_type(caps, media_type);
	} else {
		ast_format_cap_append_from_cap(caps, session->endpoint->media.codecs, media_type);
	}

	/* get the capabilities on the peer */
	get_codecs(session, stream, &codecs);
	ast_rtp_codecs_payload_formats(&codecs, peer, &fmts);

	/* get the joint capabilities between peer and endpoint */
	ast_format_cap_get_compatible(caps, peer, joint);
	if (!ast_format_cap_count(joint)) {
		struct ast_str *usbuf = ast_str_alloca(64);
		struct ast_str *thembuf = ast_str_alloca(64);

		ast_rtp_codecs_payloads_destroy(&codecs);
		ast_log(LOG_NOTICE, "No joint capabilities for '%s' media stream between our configuration(%s) and incoming SDP(%s)\n",
			session_media->stream_type,
			ast_format_cap_get_names(caps, &usbuf),
			ast_format_cap_get_names(peer, &thembuf));
		return -1;
	}

	ast_rtp_codecs_payloads_copy(&codecs, ast_rtp_instance_get_codecs(session_media->rtp),
				     session_media->rtp);

	ast_format_cap_append_from_cap(session->req_caps, joint, AST_MEDIA_TYPE_UNKNOWN);

	if (session->channel) {
		struct ast_format *fmt;

		ast_channel_lock(session->channel);
		ast_format_cap_remove_by_type(caps, AST_MEDIA_TYPE_UNKNOWN);
		ast_format_cap_append_from_cap(caps, ast_channel_nativeformats(session->channel), AST_MEDIA_TYPE_UNKNOWN);
		ast_format_cap_remove_by_type(caps, media_type);

		/*
		 * XXX Historically we picked the "best" joint format to use
		 * and stuck with it.  It would be nice to just append the
		 * determined joint media capabilities to give translation
		 * more formats to choose from when necessary.  Unfortunately,
		 * there are some areas of the system where this doesn't work
		 * very well. (The softmix bridge in particular is reluctant
		 * to pick higher fidelity formats and has a problem with
		 * asymmetric sample rates.)
		 */
		fmt = ast_format_cap_get_format(joint, 0);
		ast_format_cap_append(caps, fmt, 0);

		/*
		 * Apply the new formats to the channel, potentially changing
		 * raw read/write formats and translation path while doing so.
		 */
		ast_channel_nativeformats_set(session->channel, caps);
		ast_set_read_format(session->channel, ast_channel_readformat(session->channel));
		ast_set_write_format(session->channel, ast_channel_writeformat(session->channel));
		ast_channel_unlock(session->channel);

		ao2_ref(fmt, -1);
	}

	ast_rtp_codecs_payloads_destroy(&codecs);
	return 0;
}
Ejemplo n.º 19
0
static int nv_detectfax_exec(struct ast_channel *chan, const char *data)
{
	int res = 0;
	char tmp[256] = "\0";
	char *p = NULL;
	char *waitstr = NULL;
	char *options = NULL;
	char *silstr = NULL;
	char *minstr = NULL;
	char *maxstr = NULL;
	struct ast_frame *fr = NULL;
	struct ast_frame *fr2 = NULL;
	int notsilent = 0;
	struct timeval start = {0, 0}, end = {0, 0};
	int waitdur = 4;
	int sildur = 1000;
	int mindur = 100;
	int maxdur = -1;
	int skipanswer = 0;
	int noextneeded = 0;
	int ignoredtmf = 0;
	int ignorefax = 0;
	int ignoretalk = 0;
	int x = 0;
	struct ast_format* origrformat = NULL;
	int features = 0;
	time_t timeout = 0;
	struct ast_dsp *dsp = NULL;
	
	struct ast_format_cap *cap;
	struct ast_format linearFormat;
	
	/* linear format capabilities */
	ast_format_set(&linearFormat, AST_FORMAT_SLINEAR, 0);
	cap = ast_format_cap_alloc_nolock();
	ast_format_cap_add(cap, &linearFormat);
	/* done */
	
	pbx_builtin_setvar_helper(chan, "FAX_DETECTED", "");
	pbx_builtin_setvar_helper(chan, "FAXEXTEN", "");
	pbx_builtin_setvar_helper(chan, "DTMF_DETECTED", "");
	pbx_builtin_setvar_helper(chan, "TALK_DETECTED", "");
	
	if (data || !ast_strlen_zero(data)) {
		strncpy(tmp, data, sizeof(tmp)-1);
	}	
	
	p = tmp;
	
	waitstr = strsep(&p, ",");
	options = strsep(&p, ",");
	silstr = strsep(&p, ",");
	minstr = strsep(&p, ",");	
	maxstr = strsep(&p, ",");	
	
	if (waitstr) {
		if ((sscanf(waitstr, "%d", &x) == 1) && (x > 0))
			waitdur = x;
	}
	
	if (options) {
		if (strchr(options, 'n'))
			skipanswer = 1;
		if (strchr(options, 'x'))
			noextneeded = 1;
		if (strchr(options, 'd'))
			ignoredtmf = 1;
		if (strchr(options, 'f'))
			ignorefax = 1;
		if (strchr(options, 't'))
			ignoretalk = 1;
	}
	
	if (silstr) {
		if ((sscanf(silstr, "%d", &x) == 1) && (x > 0))
			sildur = x;
	}
	
	if (minstr) {
		if ((sscanf(minstr, "%d", &x) == 1) && (x > 0))
			mindur = x;
	}
	
	if (maxstr) {
		if ((sscanf(maxstr, "%d", &x) == 1) && (x > 0))
			maxdur = x;
	}
	
	ast_log(LOG_DEBUG, "Preparing detect of fax (waitdur=%dms, sildur=%dms, mindur=%dms, maxdur=%dms)\n", 
						waitdur, sildur, mindur, maxdur);
						
	//	LOCAL_USER_ADD(u);
// 	if (chan->_state != AST_STATE_UP && !skipanswer) {
	if (ast_channel_state(chan) != AST_STATE_UP && !skipanswer) {
		/* Otherwise answer unless we're supposed to send this while on-hook */
		res = ast_answer(chan);
	}
	if (!res) {
// 		origrformat = chan->readformat;
		origrformat = ast_channel_readformat(chan);
		
// 		if ((res = ast_set_read_format(chan, AST_FORMAT_SLINEAR))) 
		if ((res = ast_set_read_format_from_cap(chan, cap)) ){
			ast_log(LOG_WARNING, "Unable to set read format to linear!\n");
		}
	}
	if (!(dsp = ast_dsp_new())) {
		ast_log(LOG_WARNING, "Unable to allocate DSP!\n");
		res = -1;
	}
	
	if (dsp) {	
		if (!ignoretalk)
			; /* features |= DSP_FEATURE_SILENCE_SUPPRESS; */
		if (!ignorefax)
			features |= DSP_FEATURE_FAX_DETECT;
		//if (!ignoredtmf)
			features |= DSP_FEATURE_DIGIT_DETECT;
			
		ast_dsp_set_threshold(dsp, 256); 
		ast_dsp_set_features(dsp, features | DSP_DIGITMODE_RELAXDTMF);
		ast_dsp_set_digitmode(dsp, DSP_DIGITMODE_DTMF);
	}

	if (!res) {
		if (waitdur > 0)
			timeout = time(NULL) + (time_t)waitdur;

		while(ast_waitfor(chan, -1) > -1) {
			if (waitdur > 0 && time(NULL) > timeout) {
				res = 0;
				break;
			}

			fr = ast_read(chan);
			if (!fr) {
				ast_log(LOG_DEBUG, "Got hangup\n");
				res = -1;
				break;
			}

			fr2 = ast_dsp_process(chan, dsp, fr);
			if (!fr2) {
				ast_log(LOG_WARNING, "Bad DSP received (what happened?)\n");
				fr2 = fr;
			} 

			if (fr2->frametype == AST_FRAME_DTMF) {
				if (fr2->subclass.integer == 'f' && !ignorefax) {
					/* Fax tone -- Handle and return NULL */
					ast_log(LOG_DEBUG, "Fax detected on %s\n", ast_channel_name(chan));
					ast_log(LOG_DEBUG, "Fax detected on %s\n", ast_channel_name(chan));
					if (strcmp(ast_channel_exten(chan), "fax")) {
						ast_log(LOG_NOTICE, "Redirecting %s to fax extension\n", ast_channel_name(chan));
						pbx_builtin_setvar_helper(chan, "FAX_DETECTED", "1");
						pbx_builtin_setvar_helper(chan,"FAXEXTEN",ast_channel_exten(chan));								
						if (ast_exists_extension(chan, ast_channel_context(chan), "fax", 1, ast_channel_caller(chan)->id.number.str)) {
							/* Save the DID/DNIS when we transfer the fax call to a "fax" extension */
// 							strncpy(ast_channel_exten(chan), "fax", sizeof(ast_channel_exten(chan))-1);
// 							chan->priority = 0;
							ast_channel_exten_set(chan, "fax");
							ast_channel_priority_set(chan, 0);
						} else
							ast_log(LOG_WARNING, "Fax detected, but no fax extension\n");
					} else
						ast_log(LOG_WARNING, "Already in a fax extension, not redirecting\n");

					res = 0;
					ast_frfree(fr);
					break;
				} else if (!ignoredtmf) {
					ast_log(LOG_DEBUG, "DTMF detected on %s\n", ast_channel_name(chan));
					char t[2];
					t[0] = fr2->subclass.integer;
					t[1] = '\0';
					if (noextneeded || ast_canmatch_extension(chan, ast_channel_context(chan), t, 1, ast_channel_caller(chan)->id.number.str)) {
						pbx_builtin_setvar_helper(chan, "DTMF_DETECTED", "1");
						/* They entered a valid extension, or might be anyhow */
						if (noextneeded) {
							ast_log(LOG_NOTICE, "DTMF received (not matching to exten)\n");
							res = 0;
						} else {
							ast_log(LOG_NOTICE, "DTMF received (matching to exten)\n");
							res = fr2->subclass.integer;
						}
						ast_frfree(fr);
						break;
					} else
						ast_log(LOG_DEBUG, "Valid extension requested and DTMF did not match\n");
				}
// 			} else if ((fr->frametype == AST_FRAME_VOICE) && (fr->subclass == AST_FORMAT_SLINEAR) && !ignoretalk) {
			} else if ((fr->frametype == AST_FRAME_VOICE) && ( ast_format_cap_iscompatible(cap, &fr->subclass.format)) && !ignoretalk) {
				int totalsilence;
				int ms;
				res = ast_dsp_silence(dsp, fr, &totalsilence);
				if (res && (totalsilence > sildur)) {
					/* We've been quiet a little while */
					if (notsilent) {
						/* We had heard some talking */
						gettimeofday(&end, NULL);
						ms = (end.tv_sec - start.tv_sec) * 1000;
						ms += (end.tv_usec - start.tv_usec) / 1000;
						ms -= sildur;
						if (ms < 0)
							ms = 0;
						if ((ms > mindur) && ((maxdur < 0) || (ms < maxdur))) {
							char ms_str[10];
							ast_log(LOG_DEBUG, "Found qualified token of %d ms\n", ms);
							ast_log(LOG_NOTICE, "Redirecting %s to talk extension\n", ast_channel_name(chan));

							/* Save detected talk time (in milliseconds) */ 
							sprintf(ms_str, "%d", ms);	
							pbx_builtin_setvar_helper(chan, "TALK_DETECTED", ms_str);

							if (ast_exists_extension(chan, ast_channel_context(chan), "talk", 1, ast_channel_caller(chan)->id.number.str)) {
// 								strncpy(ast_channel_exten(chan), "talk", sizeof(ast_channel_exten(chan)) - 1);
// 								chan->priority = 0;
								ast_channel_exten_set(chan, "talk");
								ast_channel_priority_set(chan, 0);
							} else
								ast_log(LOG_WARNING, "Talk detected, but no talk extension\n");
							res = 0;
							ast_frfree(fr);
							break;
						} else
							ast_log(LOG_DEBUG, "Found unqualified token of %d ms\n", ms);
						notsilent = 0;
					}
				} else {
					if (!notsilent) {
						/* Heard some audio, mark the begining of the token */
						gettimeofday(&start, NULL);
						ast_log(LOG_DEBUG, "Start of voice token!\n");
						notsilent = 1;
					}
				}						
			}
			ast_frfree(fr);
		}
	} else
		ast_log(LOG_WARNING, "Could not answer channel '%s'\n", ast_channel_name(chan));
	
	if (res > -1) {
		if (origrformat && ast_set_read_format(chan, origrformat)) {
			ast_log(LOG_WARNING, "Failed to restore read format for %s to %s\n", 
				ast_channel_name(chan), ast_getformatname(origrformat));
		}
	}
	
	if (dsp)
		ast_dsp_free(dsp);
	
	//	LOCAL_USER_REMOVE(u);
	ast_format_cap_destroy(cap);
	return res;
}
Ejemplo n.º 20
0
static int func_channel_read(struct ast_channel *chan, const char *function,
                             char *data, char *buf, size_t len)
{
    int ret = 0;
    char tmp[512];
    struct ast_format_cap *tmpcap;

    if (!strcasecmp(data, "audionativeformat")) {
        if ((tmpcap = ast_format_cap_get_type(ast_channel_nativeformats(chan), AST_FORMAT_TYPE_AUDIO))) {
            ast_copy_string(buf, ast_getformatname_multiple(tmp, sizeof(tmp), tmpcap), len);
            tmpcap = ast_format_cap_destroy(tmpcap);
        }
    } else if (!strcasecmp(data, "videonativeformat")) {
        if ((tmpcap = ast_format_cap_get_type(ast_channel_nativeformats(chan), AST_FORMAT_TYPE_VIDEO))) {
            ast_copy_string(buf, ast_getformatname_multiple(tmp, sizeof(tmp), tmpcap), len);
            tmpcap = ast_format_cap_destroy(tmpcap);
        }
    } else if (!strcasecmp(data, "audioreadformat")) {
        ast_copy_string(buf, ast_getformatname(ast_channel_readformat(chan)), len);
    } else if (!strcasecmp(data, "audiowriteformat")) {
        ast_copy_string(buf, ast_getformatname(ast_channel_writeformat(chan)), len);
#ifdef CHANNEL_TRACE
    } else if (!strcasecmp(data, "trace")) {
        ast_channel_lock(chan);
        ast_copy_string(buf, ast_channel_trace_is_enabled(chan) ? "1" : "0", len);
        ast_channel_unlock(chan);
#endif
    } else if (!strcasecmp(data, "tonezone") && ast_channel_zone(chan))
        locked_copy_string(chan, buf, ast_channel_zone(chan)->country, len);
    else if (!strcasecmp(data, "language"))
        locked_copy_string(chan, buf, ast_channel_language(chan), len);
    else if (!strcasecmp(data, "musicclass"))
        locked_copy_string(chan, buf, ast_channel_musicclass(chan), len);
    else if (!strcasecmp(data, "name")) {
        locked_copy_string(chan, buf, ast_channel_name(chan), len);
    } else if (!strcasecmp(data, "parkinglot"))
        locked_copy_string(chan, buf, ast_channel_parkinglot(chan), len);
    else if (!strcasecmp(data, "state"))
        locked_copy_string(chan, buf, ast_state2str(ast_channel_state(chan)), len);
    else if (!strcasecmp(data, "channeltype"))
        locked_copy_string(chan, buf, ast_channel_tech(chan)->type, len);
    else if (!strcasecmp(data, "accountcode"))
        locked_copy_string(chan, buf, ast_channel_accountcode(chan), len);
    else if (!strcasecmp(data, "checkhangup")) {
        ast_channel_lock(chan);
        ast_copy_string(buf, ast_check_hangup(chan) ? "1" : "0", len);
        ast_channel_unlock(chan);
    } else if (!strcasecmp(data, "peeraccount"))
        locked_copy_string(chan, buf, ast_channel_peeraccount(chan), len);
    else if (!strcasecmp(data, "hangupsource"))
        locked_copy_string(chan, buf, ast_channel_hangupsource(chan), len);
    else if (!strcasecmp(data, "appname") && ast_channel_appl(chan))
        locked_copy_string(chan, buf, ast_channel_appl(chan), len);
    else if (!strcasecmp(data, "appdata") && ast_channel_data(chan))
        locked_copy_string(chan, buf, ast_channel_data(chan), len);
    else if (!strcasecmp(data, "exten") && ast_channel_data(chan))
        locked_copy_string(chan, buf, ast_channel_exten(chan), len);
    else if (!strcasecmp(data, "context") && ast_channel_data(chan))
        locked_copy_string(chan, buf, ast_channel_context(chan), len);
    else if (!strcasecmp(data, "userfield") && ast_channel_data(chan))
        locked_copy_string(chan, buf, ast_channel_userfield(chan), len);
    else if (!strcasecmp(data, "channame") && ast_channel_data(chan))
        locked_copy_string(chan, buf, ast_channel_name(chan), len);
    else if (!strcasecmp(data, "linkedid")) {
        ast_channel_lock(chan);
        if (ast_strlen_zero(ast_channel_linkedid(chan))) {
            /* fall back on the channel's uniqueid if linkedid is unset */
            ast_copy_string(buf, ast_channel_uniqueid(chan), len);
        }
        else {
            ast_copy_string(buf, ast_channel_linkedid(chan), len);
        }
        ast_channel_unlock(chan);
    } else if (!strcasecmp(data, "peer")) {
        struct ast_channel *p;
        ast_channel_lock(chan);
        p = ast_bridged_channel(chan);
        if (p || ast_channel_tech(chan) || ast_channel_cdr(chan)) /* dummy channel? if so, we hid the peer name in the language */
            ast_copy_string(buf, (p ? ast_channel_name(p) : ""), len);
        else {
            /* a dummy channel can still pass along bridged peer info via
                           the BRIDGEPEER variable */
            const char *pname = pbx_builtin_getvar_helper(chan, "BRIDGEPEER");
            if (!ast_strlen_zero(pname))
                ast_copy_string(buf, pname, len); /* a horrible kludge, but... how else? */
            else
                buf[0] = 0;
        }
        ast_channel_unlock(chan);
    } else if (!strcasecmp(data, "uniqueid")) {
        locked_copy_string(chan, buf, ast_channel_uniqueid(chan), len);
    } else if (!strcasecmp(data, "transfercapability")) {
        locked_copy_string(chan, buf, transfercapability_table[ast_channel_transfercapability(chan) & 0x1f], len);
    } else if (!strcasecmp(data, "callgroup")) {
        char groupbuf[256];
        locked_copy_string(chan, buf,  ast_print_group(groupbuf, sizeof(groupbuf), ast_channel_callgroup(chan)), len);
    } else if (!strcasecmp(data, "pickupgroup")) {
        char groupbuf[256];
        locked_copy_string(chan, buf,  ast_print_group(groupbuf, sizeof(groupbuf), ast_channel_pickupgroup(chan)), len);
    } else if (!strcasecmp(data, "amaflags")) {
        char amabuf[256];
        snprintf(amabuf,sizeof(amabuf), "%d", ast_channel_amaflags(chan));
        locked_copy_string(chan, buf, amabuf, len);
    } else if (!strncasecmp(data, "secure_bridge_", 14)) {
        struct ast_datastore *ds;
        ast_channel_lock(chan);
        if ((ds = ast_channel_datastore_find(chan, &secure_call_info, NULL))) {
            struct ast_secure_call_store *encrypt = ds->data;
            if (!strcasecmp(data, "secure_bridge_signaling")) {
                snprintf(buf, len, "%s", encrypt->signaling ? "1" : "");
            } else if (!strcasecmp(data, "secure_bridge_media")) {
                snprintf(buf, len, "%s", encrypt->media ? "1" : "");
            }
        }
        ast_channel_unlock(chan);
    } else if (!ast_channel_tech(chan) || !ast_channel_tech(chan)->func_channel_read || ast_channel_tech(chan)->func_channel_read(chan, function, data, buf, len)) {
        ast_log(LOG_WARNING, "Unknown or unavailable item requested: '%s'\n", data);
        ret = -1;
    }

    return ret;
}