Esempio n. 1
0
/*
* Receive a string of DTMF digits where the length of the digit string is known in advance. Do not give preferential
* treatment to any digit value, and allow separate time out values to be specified for the first digit and all subsequent
* digits.
*
* Returns 0 if all digits successfully received.
* Returns 1 if a digit time out occurred
* Returns -1 if the caller hung up or there was a channel error.
*
*/
static int receive_dtmf_digits(struct ast_channel *chan, char *digit_string, int length, int fdto, int sdto)
{
	int res = 0;
	int i = 0;
	int r;
	struct ast_frame *f;
	struct timeval lastdigittime;

	lastdigittime = ast_tvnow();
	for (;;) {
		/* if outa time, leave */
		if (ast_tvdiff_ms(ast_tvnow(), lastdigittime) > ((i > 0) ? sdto : fdto)) {
			ast_verb(4, "AlarmReceiver: DTMF Digit Timeout on %s\n", ast_channel_name(chan));
			ast_debug(1,"AlarmReceiver: DTMF timeout on chan %s\n",ast_channel_name(chan));
			res = 1;
			break;
		}

		if ((r = ast_waitfor(chan, -1)) < 0) {
			ast_debug(1, "Waitfor returned %d\n", r);
			continue;
		}

		f = ast_read(chan);

		if (f == NULL) {
			res = -1;
			break;
		}

		/* If they hung up, leave */
		if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP)) {
			if (f->data.uint32) {
				ast_channel_hangupcause_set(chan, f->data.uint32);
			}
			ast_frfree(f);
			res = -1;
			break;
		}

		/* if not DTMF, just do it again */
		if (f->frametype != AST_FRAME_DTMF) {
			ast_frfree(f);
			continue;
		}

		digit_string[i++] = f->subclass.integer;  /* save digit */

		ast_frfree(f);

		/* If we have all the digits we expect, leave */
		if(i >= length)
			break;

		lastdigittime = ast_tvnow();
	}

	digit_string[i] = '\0'; /* Nul terminate the end of the digit string */
	return res;
}
void ast_ari_channels_hangup(struct ast_variable *headers,
	struct ast_ari_channels_hangup_args *args,
	struct ast_ari_response *response)
{
	RAII_VAR(struct ast_channel *, chan, NULL, ao2_cleanup);
	int cause;

	chan = ast_channel_get_by_name(args->channel_id);
	if (chan == NULL) {
		ast_ari_response_error(
			response, 404, "Not Found",
			"Channel not found");
		return;
	}

	if (ast_strlen_zero(args->reason) || !strcmp(args->reason, "normal")) {
		cause = AST_CAUSE_NORMAL;
	} else if (!strcmp(args->reason, "busy")) {
		cause = AST_CAUSE_BUSY;
	} else if (!strcmp(args->reason, "congestion")) {
		cause = AST_CAUSE_CONGESTION;
	} else {
		ast_ari_response_error(
			response, 400, "Invalid Reason",
			"Invalid reason for hangup provided");
		return;
	}

	ast_channel_hangupcause_set(chan, cause);
	ast_softhangup(chan, AST_SOFTHANGUP_EXPLICIT);

	ast_ari_response_no_content(response);
}
Esempio n. 3
0
static void rfc3326_use_reason_header(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
{
	const pj_str_t str_reason = { "Reason", 6 };
	pjsip_generic_string_hdr *header = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_reason, NULL);
	char buf[20], *cause, *text;
	int code;

	if (!header) {
		return;
	}

	ast_copy_pj_str(buf, &header->hvalue, sizeof(buf));
	cause = ast_skip_blanks(buf);

	if (strncasecmp(cause, "Q.850", 5) || !(cause = strstr(cause, "cause="))) {
		return;
	}

	/* If text is present get rid of it */
	if ((text = strstr(cause, ";"))) {
		*text = '\0';
	}

	if (sscanf(cause, "cause=%30d", &code) != 1) {
		return;
	}

	ast_channel_hangupcause_set(session->channel, code & 0x7f);
}
Esempio n. 4
0
static int offer_session(struct respoke_session *session)
{
	if (session->channel) {
		return 0;
	}

	if (!(session->channel = channel_create(session, AST_STATE_RING,
		      respoke_session_get_exten(session), NULL, NULL))) {
		return -1;
	}

	switch (ast_pbx_start(session->channel)) {
	case AST_PBX_CALL_LIMIT:
		ast_log(LOG_WARNING, "PBX call limit reached\n");
	case AST_PBX_FAILED:
		ast_log(LOG_WARNING, "Failed to start PBX\n");
		ast_channel_hangupcause_set(session->channel, AST_CAUSE_SWITCH_CONGESTION);
		ast_hangup(session->channel);
		return -1;
	case AST_PBX_SUCCESS:
		break;
	}

	ast_debug(3, "Started PBX on new RESPOKE channel %s\n",
		  ast_channel_name(session->channel));

	return 0;
}
Esempio n. 5
0
/*!
 * \brief Receive a fixed length DTMF string.
 *
 * \note Doesn't give preferential treatment to any digit,
 * \note allow different timeout values for the first and all subsequent digits
 *
 * \param chan Asterisk Channel
 * \param digit_string Digits String
 * \param buf_size The size of the Digits String buffer
 * \param expected Digits expected for this message type
 * \param received Pointer to number of digits received so far
 *
 * \retval 0 if all digits were successfully received
 * \retval 1 if a timeout occurred
 * \retval -1 if the caller hung up or on channel errors
 */
static int receive_dtmf_digits(struct ast_channel *chan, char *digit_string, int buf_size, int expected, int *received)
{
	int rtn = 0;
	int r;
	struct ast_frame *f;
	struct timeval lastdigittime;

	lastdigittime = ast_tvnow();
	while (*received < expected && *received < buf_size - 1) {
		/* If timed out, leave */
		if (ast_tvdiff_ms(ast_tvnow(), lastdigittime) > ((*received > 0) ? sdtimeout : fdtimeout)) {
			ast_verb(4, "AlarmReceiver: DTMF Digit Timeout on %s\n", ast_channel_name(chan));
			ast_debug(1, "AlarmReceiver: DTMF timeout on chan %s\n", ast_channel_name(chan));
			rtn = 1;
			break;
		}

		if ((r = ast_waitfor(chan, -1)) < 0) {
			ast_debug(1, "Waitfor returned %d\n", r);
			continue;
		}

		if ((f = ast_read(chan)) == NULL) {
			rtn = -1;
			break;
		}

		/* If they hung up, leave */
		if ((f->frametype == AST_FRAME_CONTROL)
			&& (f->subclass.integer == AST_CONTROL_HANGUP)) {
			if (f->data.uint32) {
				ast_channel_hangupcause_set(chan, f->data.uint32);
			}
			ast_frfree(f);
			rtn = -1;
			break;
		}

		/* If not DTMF, just do it again */
		if (f->frametype != AST_FRAME_DTMF) {
			ast_frfree(f);
			continue;
		}

		/* Save digit */
		digit_string[(*received)++] = f->subclass.integer;
		ast_frfree(f);

		lastdigittime = ast_tvnow();
	}

	/* Null terminate the end of the digit_string */
	digit_string[*received] = '\0';

	return rtn;
}
Esempio n. 6
0
/*!
 * \ingroup applications
 */
int indicate_congestion(struct ast_channel *chan, const char *data)
{
	ast_indicate(chan, AST_CONTROL_CONGESTION);
	/* Don't change state of an UP channel, just indicate
	   congestion in audio */
	ast_channel_lock(chan);
	if (ast_channel_state(chan) != AST_STATE_UP) {
		ast_channel_hangupcause_set(chan, AST_CAUSE_CONGESTION);
		ast_setstate(chan, AST_STATE_BUSY);
	}
	ast_channel_unlock(chan);
	wait_for_hangup(chan, data);
	return -1;
}
/*! \brief Initiate new call, part of PBX interface
 *         dest is the dial string */
static int local_call(struct ast_channel *ast, const char *dest, int timeout)
{
	struct local_pvt *p = ast_channel_tech_pvt(ast);
	int pvt_locked = 0;

	struct ast_channel *owner = NULL;
	struct ast_channel *chan = NULL;
	int res;
	struct ast_var_t *varptr;
	struct ast_var_t *clone_var;
	char *reduced_dest = ast_strdupa(dest);
	char *slash;
	const char *exten;
	const char *context;

	if (!p) {
		return -1;
	}

	/* since we are letting go of channel locks that were locked coming into
	 * this function, then we need to give the tech pvt a ref */
	ao2_ref(p, 1);
	ast_channel_unlock(ast);

	awesome_locking(p, &chan, &owner);
	pvt_locked = 1;

	if (owner != ast) {
		res = -1;
		goto return_cleanup;
	}

	if (!owner || !chan) {
		res = -1;
		goto return_cleanup;
	}

	/*
	 * Note that cid_num and cid_name aren't passed in the ast_channel_alloc
	 * call, so it's done here instead.
	 *
	 * All these failure points just return -1. The individual strings will
	 * be cleared when we destroy the channel.
	 */
	ast_party_redirecting_copy(ast_channel_redirecting(chan), ast_channel_redirecting(owner));

	ast_party_dialed_copy(ast_channel_dialed(chan), ast_channel_dialed(owner));

	ast_connected_line_copy_to_caller(ast_channel_caller(chan), ast_channel_connected(owner));
	ast_connected_line_copy_from_caller(ast_channel_connected(chan), ast_channel_caller(owner));

	ast_channel_language_set(chan, ast_channel_language(owner));
	ast_channel_accountcode_set(chan, ast_channel_accountcode(owner));
	ast_channel_musicclass_set(chan, ast_channel_musicclass(owner));
	ast_cdr_update(chan);

	ast_channel_cc_params_init(chan, ast_channel_get_cc_config_params(owner));

	/* Make sure we inherit the AST_CAUSE_ANSWERED_ELSEWHERE if it's set on the queue/dial call request in the dialplan */
	if (ast_channel_hangupcause(ast) == AST_CAUSE_ANSWERED_ELSEWHERE) {
		ast_channel_hangupcause_set(chan, AST_CAUSE_ANSWERED_ELSEWHERE);
	}

	/* copy the channel variables from the incoming channel to the outgoing channel */
	/* Note that due to certain assumptions, they MUST be in the same order */
	AST_LIST_TRAVERSE(ast_channel_varshead(owner), varptr, entries) {
		clone_var = ast_var_assign(varptr->name, varptr->value);
		if (clone_var) {
			AST_LIST_INSERT_TAIL(ast_channel_varshead(chan), clone_var, entries);
		}
	}
Esempio n. 8
0
int ast_unreal_hangup(struct ast_unreal_pvt *p, struct ast_channel *ast)
{
	int hangup_chan = 0;
	int res = 0;
	int cause;
	struct ast_channel *owner = NULL;
	struct ast_channel *chan = NULL;

	/* the pvt isn't going anywhere, it has a ref */
	ast_channel_unlock(ast);

	/* lock everything */
	ast_unreal_lock_all(p, &chan, &owner);

	if (ast != chan && ast != owner) {
		res = -1;
		goto unreal_hangup_cleanup;
	}

	cause = ast_channel_hangupcause(ast);

	if (ast == p->chan) {
		/* Outgoing side is hanging up. */
		ast_clear_flag(p, AST_UNREAL_CARETAKER_THREAD);
		p->chan = NULL;
		if (p->owner) {
			const char *status = pbx_builtin_getvar_helper(p->chan, "DIALSTATUS");

			if (status) {
				ast_channel_hangupcause_set(p->owner, cause);
				pbx_builtin_setvar_helper(p->owner, "CHANLOCALSTATUS", status);
			}
			ast_queue_hangup_with_cause(p->owner, cause);
		}
	} else {
		/* Owner side is hanging up. */
		p->owner = NULL;
		if (p->chan) {
			if (cause == AST_CAUSE_ANSWERED_ELSEWHERE) {
				ast_channel_hangupcause_set(p->chan, AST_CAUSE_ANSWERED_ELSEWHERE);
				ast_debug(2, "%s has AST_CAUSE_ANSWERED_ELSEWHERE set.\n",
					ast_channel_name(p->chan));
			}
			if (!ast_test_flag(p, AST_UNREAL_CARETAKER_THREAD)) {
				/*
				 * Need to actually hangup p->chan since nothing else is taking
				 * care of it.
				 */
				hangup_chan = 1;
			} else {
				ast_queue_hangup_with_cause(p->chan, cause);
			}
		}
	}

	/* this is one of our locked channels, doesn't matter which */
	ast_channel_tech_pvt_set(ast, NULL);
	ao2_ref(p, -1);

unreal_hangup_cleanup:
	ao2_unlock(p);
	if (owner) {
		ast_channel_unlock(owner);
		ast_channel_unref(owner);
	}
	if (chan) {
		ast_channel_unlock(chan);
		if (hangup_chan) {
			ast_hangup(chan);
		}
		ast_channel_unref(chan);
	}

	/* leave with the channel locked that came in */
	ast_channel_lock(ast);

	return res;
}
Esempio n. 9
0
/*!
 * \internal
 * \brief Handle COLP and redirecting conditions.
 * \since 12.0.0
 *
 * \param p Unreal private structure.
 * \param ast Channel indicating the condition.
 * \param condition What is being indicated.
 *
 * \retval 0 on success.
 * \retval -1 on error.
 */
static int unreal_colp_redirect_indicate(struct ast_unreal_pvt *p, struct ast_channel *ast, int condition)
{
	struct ast_channel *my_chan;
	struct ast_channel *my_owner;
	struct ast_channel *this_channel;
	struct ast_channel *the_other_channel;
	int isoutbound;
	int res = 0;
	unsigned char frame_data[1024];
	struct ast_frame f = {
		.frametype = AST_FRAME_CONTROL,
		.subclass.integer = condition,
		.data.ptr = frame_data,
	};

	/*
	 * A connected line update frame may only contain a partial
	 * amount of data, such as just a source, or just a ton, and not
	 * the full amount of information.  However, the collected
	 * information is all stored in the outgoing channel's
	 * connectedline structure, so when receiving a connected line
	 * update on an outgoing unreal channel, we need to transmit the
	 * collected connected line information instead of whatever
	 * happens to be in this control frame.  The same applies for
	 * redirecting information, which is why it is handled here as
	 * well.
	 */
	ast_channel_unlock(ast);
	ast_unreal_lock_all(p, &my_chan, &my_owner);
	isoutbound = AST_UNREAL_IS_OUTBOUND(ast, p);
	if (isoutbound) {
		this_channel = p->chan;
		the_other_channel = p->owner;
	} else {
		this_channel = p->owner;
		the_other_channel = p->chan;
	}
	if (the_other_channel) {
		if (condition == AST_CONTROL_CONNECTED_LINE) {
			ast_connected_line_copy_to_caller(ast_channel_caller(the_other_channel),
				ast_channel_connected(this_channel));
			f.datalen = ast_connected_line_build_data(frame_data, sizeof(frame_data),
				ast_channel_connected(this_channel), NULL);
		} else {
			f.datalen = ast_redirecting_build_data(frame_data, sizeof(frame_data),
				ast_channel_redirecting(this_channel), NULL);
		}
	}
	if (my_chan) {
		ast_channel_unlock(my_chan);
		ast_channel_unref(my_chan);
	}
	if (my_owner) {
		ast_channel_unlock(my_owner);
		ast_channel_unref(my_owner);
	}
	if (the_other_channel) {
		res = unreal_queue_frame(p, isoutbound, &f, ast, 0);
	}
	ao2_unlock(p);
	ast_channel_lock(ast);

	return res;
}

int ast_unreal_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
{
	struct ast_unreal_pvt *p = ast_channel_tech_pvt(ast);
	int res = 0;

	if (!p) {
		return -1;
	}

	ao2_ref(p, 1); /* ref for unreal_queue_frame */

	switch (condition) {
	case AST_CONTROL_CONNECTED_LINE:
	case AST_CONTROL_REDIRECTING:
		res = unreal_colp_redirect_indicate(p, ast, condition);
		break;
	case AST_CONTROL_HOLD:
		if (ast_test_flag(p, AST_UNREAL_MOH_INTERCEPT)) {
			ast_moh_start(ast, data, NULL);
			break;
		}
		res = unreal_queue_indicate(p, ast, condition, data, datalen);
		break;
	case AST_CONTROL_UNHOLD:
		if (ast_test_flag(p, AST_UNREAL_MOH_INTERCEPT)) {
			ast_moh_stop(ast);
			break;
		}
		res = unreal_queue_indicate(p, ast, condition, data, datalen);
		break;
	default:
		res = unreal_queue_indicate(p, ast, condition, data, datalen);
		break;
	}

	ao2_ref(p, -1);
	return res;
}

int ast_unreal_digit_begin(struct ast_channel *ast, char digit)
{
	struct ast_unreal_pvt *p = ast_channel_tech_pvt(ast);
	int res = -1;
	struct ast_frame f = { AST_FRAME_DTMF_BEGIN, };
	int isoutbound;

	if (!p) {
		return -1;
	}

	ao2_ref(p, 1); /* ref for unreal_queue_frame */
	ao2_lock(p);
	isoutbound = AST_UNREAL_IS_OUTBOUND(ast, p);
	f.subclass.integer = digit;
	res = unreal_queue_frame(p, isoutbound, &f, ast, 0);
	ao2_unlock(p);
	ao2_ref(p, -1);

	return res;
}

int ast_unreal_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
{
	struct ast_unreal_pvt *p = ast_channel_tech_pvt(ast);
	int res = -1;
	struct ast_frame f = { AST_FRAME_DTMF_END, };
	int isoutbound;

	if (!p) {
		return -1;
	}

	ao2_ref(p, 1); /* ref for unreal_queue_frame */
	ao2_lock(p);
	isoutbound = AST_UNREAL_IS_OUTBOUND(ast, p);
	f.subclass.integer = digit;
	f.len = duration;
	res = unreal_queue_frame(p, isoutbound, &f, ast, 0);
	ao2_unlock(p);
	ao2_ref(p, -1);

	return res;
}

int ast_unreal_sendtext(struct ast_channel *ast, const char *text)
{
	struct ast_unreal_pvt *p = ast_channel_tech_pvt(ast);
	int res = -1;
	struct ast_frame f = { AST_FRAME_TEXT, };
	int isoutbound;

	if (!p) {
		return -1;
	}

	ao2_ref(p, 1); /* ref for unreal_queue_frame */
	ao2_lock(p);
	isoutbound = AST_UNREAL_IS_OUTBOUND(ast, p);
	f.data.ptr = (char *) text;
	f.datalen = strlen(text) + 1;
	res = unreal_queue_frame(p, isoutbound, &f, ast, 0);
	ao2_unlock(p);
	ao2_ref(p, -1);
	return res;
}

int ast_unreal_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
{
	struct ast_unreal_pvt *p = ast_channel_tech_pvt(ast);
	int res = -1;
	struct ast_frame f = { AST_FRAME_HTML, };
	int isoutbound;

	if (!p) {
		return -1;
	}

	ao2_ref(p, 1); /* ref for unreal_queue_frame */
	ao2_lock(p);
	isoutbound = AST_UNREAL_IS_OUTBOUND(ast, p);
	f.subclass.integer = subclass;
	f.data.ptr = (char *)data;
	f.datalen = datalen;
	res = unreal_queue_frame(p, isoutbound, &f, ast, 0);
	ao2_unlock(p);
	ao2_ref(p, -1);

	return res;
}

void ast_unreal_call_setup(struct ast_channel *semi1, struct ast_channel *semi2)
{
	struct ast_var_t *varptr;
	struct ast_var_t *clone_var;

	/*
	 * Note that cid_num and cid_name aren't passed in the
	 * ast_channel_alloc calls in ast_unreal_new_channels().  It's
	 * done here instead.
	 */
	ast_party_redirecting_copy(ast_channel_redirecting(semi2), ast_channel_redirecting(semi1));

	ast_party_dialed_copy(ast_channel_dialed(semi2), ast_channel_dialed(semi1));

	ast_connected_line_copy_to_caller(ast_channel_caller(semi2), ast_channel_connected(semi1));
	ast_connected_line_copy_from_caller(ast_channel_connected(semi2), ast_channel_caller(semi1));

	ast_channel_language_set(semi2, ast_channel_language(semi1));
	ast_channel_accountcode_set(semi2, ast_channel_accountcode(semi1));
	ast_channel_musicclass_set(semi2, ast_channel_musicclass(semi1));

	ast_channel_cc_params_init(semi2, ast_channel_get_cc_config_params(semi1));

	/*
	 * Make sure we inherit the AST_CAUSE_ANSWERED_ELSEWHERE if it's
	 * set on the queue/dial call request in the dialplan.
	 */
	if (ast_channel_hangupcause(semi1) == AST_CAUSE_ANSWERED_ELSEWHERE) {
		ast_channel_hangupcause_set(semi2, AST_CAUSE_ANSWERED_ELSEWHERE);
	}

	/*
	 * Copy the channel variables from the semi1 channel to the
	 * outgoing channel.
	 *
	 * Note that due to certain assumptions, they MUST be in the
	 * same order.
	 */
	AST_LIST_TRAVERSE(ast_channel_varshead(semi1), varptr, entries) {
		clone_var = ast_var_assign(varptr->name, varptr->value);
		if (clone_var) {
			AST_LIST_INSERT_TAIL(ast_channel_varshead(semi2), clone_var, entries);
		}
	}
	ast_channel_datastore_inherit(semi1, semi2);
}
Esempio n. 10
0
int ast_do_pickup(struct ast_channel *chan, struct ast_channel *target)
{
	struct ast_party_connected_line connected_caller;
	struct ast_datastore *ds_pickup;
	const char *chan_name;/*!< A masquerade changes channel names. */
	const char *target_name;/*!< A masquerade changes channel names. */
	int res = -1;

	RAII_VAR(struct ast_channel_snapshot *, chan_snapshot, NULL, ao2_cleanup);
	RAII_VAR(struct ast_channel_snapshot *, target_snapshot, NULL, ao2_cleanup);

	target_name = ast_strdupa(ast_channel_name(target));
	ast_debug(1, "Call pickup on '%s' by '%s'\n", target_name, ast_channel_name(chan));

	/* Mark the target to block any call pickup race. */
	ds_pickup = ast_datastore_alloc(&pickup_active, NULL);
	if (!ds_pickup) {
		ast_log(LOG_WARNING,
			"Unable to create channel datastore on '%s' for call pickup\n", target_name);
		return -1;
	}
	ast_channel_datastore_add(target, ds_pickup);

	ast_party_connected_line_init(&connected_caller);
	ast_party_connected_line_copy(&connected_caller, ast_channel_connected(target));
	ast_channel_unlock(target);/* The pickup race is avoided so we do not need the lock anymore. */
	/* Reset any earlier private connected id representation */
	ast_party_id_reset(&connected_caller.priv);

	connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
	if (ast_channel_connected_line_sub(NULL, chan, &connected_caller, 0) &&
		ast_channel_connected_line_macro(NULL, chan, &connected_caller, 0, 0)) {
		ast_channel_update_connected_line(chan, &connected_caller, NULL);
	}
	ast_party_connected_line_free(&connected_caller);

	ast_channel_lock(chan);
	chan_name = ast_strdupa(ast_channel_name(chan));
	ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(chan));
	ast_channel_unlock(chan);
	connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;

	if (ast_answer(chan)) {
		ast_log(LOG_WARNING, "Unable to answer '%s'\n", chan_name);
		goto pickup_failed;
	}

	if (ast_queue_control(chan, AST_CONTROL_ANSWER)) {
		ast_log(LOG_WARNING, "Unable to queue answer on '%s'\n", chan_name);
		goto pickup_failed;
	}

	ast_channel_queue_connected_line_update(chan, &connected_caller, NULL);

	/* setting the HANGUPCAUSE so the ringing channel knows this call was not a missed call */
	ast_channel_hangupcause_set(chan, AST_CAUSE_ANSWERED_ELSEWHERE);

	ast_channel_lock(chan);
	chan_snapshot = ast_channel_snapshot_create(chan);
	ast_channel_unlock(chan);
	if (!chan_snapshot) {
		goto pickup_failed;
	}

	target_snapshot = ast_channel_snapshot_get_latest(ast_channel_uniqueid(target));
	if (!target_snapshot) {
		goto pickup_failed;
	}

	if (ast_channel_move(target, chan)) {
		ast_log(LOG_WARNING, "Unable to complete call pickup of '%s' with '%s'\n",
			chan_name, target_name);
		goto pickup_failed;
	}

	/* target points to the channel that did the pickup at this point, so use that channel's topic instead of chan */
	send_call_pickup_stasis_message(target, chan_snapshot, target_snapshot);

	res = 0;

pickup_failed:
	ast_channel_lock(target);
	if (!ast_channel_datastore_remove(target, ds_pickup)) {
		ast_datastore_free(ds_pickup);
	}
	ast_party_connected_line_free(&connected_caller);

	return res;
}