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at_response.c
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at_response.c
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/*
Copyright (C) 2009 - 2010
Artem Makhutov <artem@makhutov.org>
http://www.makhutov.org
Dmitry Vagin <dmitry2004@yandex.ru>
bg <bg_one@mail.ru>
Copyright (C) 2020 Max von Buelow <max@m9x.de>
*/
#include "ast_config.h"
#include <asterisk/logger.h> /* ast_debug() */
#include <asterisk/pbx.h> /* ast_pbx_start() */
#include "ast_compat.h" /* asterisk compatibility fixes */
#include "at_response.h"
#include "mutils.h" /* STRLEN() */
#include "at_queue.h"
#include "chan_dongle.h"
#include "at_parse.h"
#include "char_conv.h"
#include "manager.h"
#include "channel.h" /* channel_queue_hangup() channel_queue_control() */
#include "smsdb.h"
#include "error.h"
#define CCWA_STATUS_NOT_ACTIVE 0
#define CCWA_STATUS_ACTIVE 1
#define CLCC_CALL_TYPE_VOICE 0
#define CLCC_CALL_TYPE_DATA 1
#define CLCC_CALL_TYPE_FAX 2
static const at_response_t at_responses_list[] = {
AT_RESPONSES_TABLE(AT_RES_AS_STRUCTLIST)
/* The hackish way to define the duplicated responses in the meantime */
#define DEF_STR(str) str,STRLEN(str)
{ RES_CNUM, "+CNUM",DEF_STR("ERROR+CNUM:") },
{ RES_ERROR,"ERROR",DEF_STR("COMMAND NOT SUPPORT\r") },
#undef DEF_STR
};
EXPORT_DEF const at_responses_t at_responses = { at_responses_list, 2, ITEMS_OF(at_responses_list), RES_MIN, RES_MAX};
/*!
* \brief Get the string representation of the given AT response
* \param res -- the response to process
* \return a string describing the given response
*/
EXPORT_DEF const char* at_res2str (at_res_t res)
{
if((int)res >= at_responses.name_first && (int)res <= at_responses.name_last)
return at_responses.responses[res - at_responses.name_first].name;
return "UNDEFINED";
}
/*!
* \brief Handle OK response
* \param pvt -- pvt structure
* \retval 0 success
* \retval -1 error
*/
static int at_response_ok (struct pvt* pvt, at_res_t res)
{
const at_queue_task_t * task = at_queue_head_task (pvt);
const at_queue_cmd_t * ecmd = at_queue_task_cmd(task);
if(!ecmd)
{
ast_log (LOG_ERROR, "[%s] Received unexpected 'OK'\n", PVT_ID(pvt));
return 0;
}
if(ecmd->res == RES_OK || ecmd->res == RES_CMGR)
{
switch (ecmd->cmd)
{
case CMD_AT:
case CMD_AT_Z:
case CMD_AT_E:
case CMD_AT_U2DIAG:
case CMD_AT_CGMI:
case CMD_AT_CGMM:
case CMD_AT_CGMR:
case CMD_AT_CMEE:
case CMD_AT_CGSN:
case CMD_AT_CIMI:
case CMD_AT_CPIN:
case CMD_AT_CCWA_SET:
case CMD_AT_CCWA_STATUS:
case CMD_AT_CHLD_2:
case CMD_AT_CHLD_3:
case CMD_AT_CSCA:
case CMD_AT_CLCC:
case CMD_AT_CLIR:
ast_debug (3, "[%s] %s sent successfully\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
break;
case CMD_AT_COPS_INIT:
ast_debug (1, "[%s] Operator select parameters set\n", PVT_ID(pvt));
break;
case CMD_AT_CREG_INIT:
ast_debug (1, "[%s] registration info enabled\n", PVT_ID(pvt));
break;
case CMD_AT_CREG:
ast_debug (1, "[%s] registration query sent\n", PVT_ID(pvt));
break;
case CMD_AT_CNUM:
ast_debug (1, "[%s] Subscriber phone number query successed\n", PVT_ID(pvt));
break;
/* These two are expected to be called in order */
case CMD_AT_CVOICE:
ast_debug (1, "[%s] Dongle has voice support\n", PVT_ID(pvt));
pvt->has_voice = 1;
pvt->has_voice_quectel = 0;
break;
case CMD_AT_QPCMV:
ast_debug (1, "[%s] Dongle has Quectel voice support\n", PVT_ID(pvt));
pvt->has_voice = 1;
pvt->has_voice_quectel = 1;
break;
/*
case CMD_AT_CLIP:
ast_debug (1, "[%s] Calling line indication disabled\n", PVT_ID(pvt));
break;
*/
case CMD_AT_CSSN:
ast_debug (1, "[%s] Supplementary Service Notification enabled successful\n", PVT_ID(pvt));
break;
case CMD_AT_CMGF:
ast_debug (1, "[%s] SMS operation mode set to PDU\n", PVT_ID(pvt));
break;
case CMD_AT_CPMS:
ast_debug (1, "[%s] SMS storage location is established\n", PVT_ID(pvt));
break;
case CMD_AT_CNMI:
ast_debug (1, "[%s] SMS new message indication enabled\n", PVT_ID(pvt));
ast_debug (1, "[%s] Dongle has sms support\n", PVT_ID(pvt));
pvt->has_sms = 1;
if (!pvt->initialized)
{
pvt->timeout = DATA_READ_TIMEOUT;
pvt->initialized = 1;
ast_verb (3, "[%s] Dongle initialized and ready\n", PVT_ID(pvt));
manager_event_device_status(PVT_ID(pvt), "Initialize");
}
break;
case CMD_AT_D:
pvt->dialing = 1;
if (task->cpvt != &pvt->sys_chan) {
pvt->last_dialed_cpvt = task->cpvt;
}
/* fall through */
case CMD_AT_A:
case CMD_AT_CHLD_2x:
/* not work, ^CONN: appear before OK for CHLD_ANSWER
task->cpvt->answered = 1;
task->cpvt->needhangup = 1;
*/
CPVT_SET_FLAGS(task->cpvt, CALL_FLAG_NEED_HANGUP);
ast_debug (1, "[%s] %s sent successfully for call id %d\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd), task->cpvt->call_idx);
break;
case CMD_AT_CFUN:
/* in case of reset */
pvt->ring = 0;
pvt->dialing = 0;
pvt->cwaiting = 0;
break;
case CMD_AT_DDSETEX:
ast_debug (1, "[%s] %s sent successfully\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
if (!pvt->initialized)
{
pvt->timeout = DATA_READ_TIMEOUT;
pvt->initialized = 1;
ast_verb (3, "[%s] Dongle initialized and ready\n", PVT_ID(pvt));
manager_event_device_status(PVT_ID(pvt), "Initialize");
}
break;
case CMD_AT_CHUP:
case CMD_AT_CHLD_1x:
CPVT_RESET_FLAGS(task->cpvt, CALL_FLAG_NEED_HANGUP);
ast_debug (1, "[%s] Successful hangup for call idx %d\n", PVT_ID(pvt), task->cpvt->call_idx);
break;
case CMD_AT_CMGS:
ast_debug (1, "[%s] Sending sms message in progress\n", PVT_ID(pvt));
break;
case CMD_AT_SMSTEXT:
pvt->outgoing_sms = 0;
pvt_try_restate(pvt);
/* TODO: move to +CMGS: handler */
ast_verb (3, "[%s] Successfully sent SMS message %p\n", PVT_ID(pvt), task);
ast_log (LOG_NOTICE, "[%s] Successfully sent SMS message %p\n", PVT_ID(pvt), task);
break;
case CMD_AT_DTMF:
ast_debug (1, "[%s] DTMF sent successfully for call idx %d\n", PVT_ID(pvt), task->cpvt->call_idx);
break;
case CMD_AT_CUSD:
ast_verb (3, "[%s] Successfully sent USSD %p\n", PVT_ID(pvt), task);
ast_log (LOG_NOTICE, "[%s] Successfully sent USSD %p\n", PVT_ID(pvt), task);
break;
case CMD_AT_COPS:
ast_debug (1, "[%s] Provider query successfully\n", PVT_ID(pvt));
break;
case CMD_AT_CMGR:
ast_debug (1, "[%s] SMS message see later\n", PVT_ID(pvt));
at_retrieve_next_sms(&pvt->sys_chan, at_cmd_suppress_error_mode(ecmd->flags));
break;
case CMD_AT_CMGD:
ast_debug (1, "[%s] SMS message deleted successfully\n", PVT_ID(pvt));
break;
case CMD_AT_CSQ:
ast_debug (1, "[%s] Got signal strength result\n", PVT_ID(pvt));
break;
case CMD_AT_CLVL:
pvt->volume_sync_step++;
if(pvt->volume_sync_step == VOLUME_SYNC_DONE)
{
ast_debug (1, "[%s] Volume level synchronized\n", PVT_ID(pvt));
pvt->volume_sync_step = VOLUME_SYNC_BEGIN;
}
break;
case CMD_USER:
break;
default:
ast_log (LOG_ERROR, "[%s] Received 'OK' for unhandled command '%s'\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
break;
}
at_queue_handle_result (pvt, res);
}
else
{
ast_log (LOG_ERROR, "[%s] Received 'OK' when expecting '%s', ignoring\n", PVT_ID(pvt), at_res2str (ecmd->res));
}
return 0;
}
static void log_cmd_response_error(const struct pvt* pvt, const at_queue_cmd_t *ecmd, const char *fmt, ...)
{
va_list ap;
char tempbuff[512];
if (at_cmd_suppress_error_mode(ecmd->flags) == SUPPRESS_ERROR_ENABLED) {
if (DEBUG_ATLEAST(1)) {
ast_log(AST_LOG_DEBUG, "[%s] Command response error suppressed:\n", PVT_ID(pvt));
va_start(ap, fmt);
vsnprintf(tempbuff, 512, fmt, ap);
va_end(ap);
ast_log(AST_LOG_DEBUG, "%s", tempbuff);
}
return;
}
va_start(ap, fmt);
vsnprintf(tempbuff, 512, fmt, ap);
ast_log(LOG_ERROR, "%s", tempbuff);
va_end(ap);
}
/*!
* \brief Handle ERROR response
* \param pvt -- pvt structure
* \retval 0 success
* \retval -1 error
*/
static int at_response_error (struct pvt* pvt, at_res_t res)
{
const at_queue_task_t * task = at_queue_head_task(pvt);
const at_queue_cmd_t * ecmd = at_queue_task_cmd(task);
if (ecmd && (ecmd->res == RES_OK || ecmd->res == RES_CMGR || ecmd->res == RES_SMS_PROMPT))
{
switch (ecmd->cmd)
{
/* critical errors */
case CMD_AT:
case CMD_AT_Z:
case CMD_AT_E:
case CMD_AT_CLCC:
log_cmd_response_error(pvt, ecmd, "[%s] Command '%s' failed\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
/* mean disconnected from device */
goto e_return;
/* not critical errors */
case CMD_AT_U2DIAG:
case CMD_AT_CCWA_SET:
case CMD_AT_CCWA_STATUS:
case CMD_AT_CNUM:
log_cmd_response_error(pvt, ecmd, "[%s] Command '%s' failed\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
/* mean ignore error */
break;
case CMD_AT_CGMI:
log_cmd_response_error(pvt, ecmd, "[%s] Getting manufacturer info failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CGMM:
log_cmd_response_error(pvt, ecmd, "[%s] Getting model info failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CGMR:
log_cmd_response_error(pvt, ecmd, "[%s] Getting firmware info failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CMEE:
log_cmd_response_error(pvt, ecmd, "[%s] Setting error verbosity level failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CGSN:
log_cmd_response_error(pvt, ecmd, "[%s] Getting IMEI number failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CIMI:
log_cmd_response_error(pvt, ecmd, "[%s] Getting IMSI number failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CPIN:
log_cmd_response_error(pvt, ecmd, "[%s] Error checking PIN state\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_COPS_INIT:
log_cmd_response_error(pvt, ecmd, "[%s] Error setting operator select parameters\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CREG_INIT:
log_cmd_response_error(pvt, ecmd, "[%s] Error enabling registration info\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CREG:
ast_debug (1, "[%s] Error getting registration info\n", PVT_ID(pvt));
break;
/* These two are expected to be called in order */
case CMD_AT_CVOICE:
ast_debug(1, "[%s] Dongle has NO (CVOICE) voice support\n", PVT_ID(pvt));
pvt->has_voice = 0;
break;
case CMD_AT_QPCMV:
ast_debug(1, "[%s] Dongle has NO (QPCMV) voice support\n", PVT_ID(pvt));
pvt->has_voice_quectel = 0;
if (pvt->has_voice == 0) {
ast_log(LOG_WARNING, "[%s] Dongle has NO voice support\n", PVT_ID(pvt));
if (!pvt->initialized)
{
/* continue initialization in other job at cmd CMD_AT_CMGF */
if (at_enqueue_initialization(task->cpvt, CMD_AT_CMGF))
{
log_cmd_response_error(pvt, ecmd, "[%s] Error schedule initialization commands\n", PVT_ID(pvt));
goto e_return;
}
}
}
break;
/*
case CMD_AT_CLIP:
log_cmd_response_error(pvt, ecmd, "[%s] Error enabling calling line indication\n", PVT_ID(pvt));
goto e_return;
*/
case CMD_AT_CSSN:
log_cmd_response_error(pvt, ecmd, "[%s] Error Supplementary Service Notification activation failed\n", PVT_ID(pvt));
goto e_return;
case CMD_AT_CMGF:
case CMD_AT_CPMS:
case CMD_AT_CNMI:
ast_debug (1, "[%s] Command '%s' failed\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
ast_debug (1, "[%s] No SMS support\n", PVT_ID(pvt));
pvt->has_sms = 0;
if (!pvt->initialized)
{
if (pvt->has_voice)
{
/* continue initialization in other job at cmd CMD_AT_CSQ */
if (at_enqueue_initialization(task->cpvt, CMD_AT_CSQ))
{
log_cmd_response_error(pvt, ecmd, "[%s] Error querying signal strength\n", PVT_ID(pvt));
goto e_return;
}
pvt->timeout = DATA_READ_TIMEOUT;
pvt->initialized = 1;
/* FIXME: say 'initialized and ready' but disconnect */
// ast_verb (3, "[%s] Dongle initialized and ready\n", PVT_ID(pvt));
}
goto e_return;
}
break;
case CMD_AT_A:
case CMD_AT_CHLD_2x:
log_cmd_response_error(pvt, ecmd, "[%s] Answer failed for call idx %d\n", PVT_ID(pvt), task->cpvt->call_idx);
queue_hangup (task->cpvt->channel, 0);
break;
case CMD_AT_CHLD_3:
log_cmd_response_error(pvt, ecmd, "[%s] Can't begin conference call idx %d\n", PVT_ID(pvt), task->cpvt->call_idx);
queue_hangup(task->cpvt->channel, 0);
break;
case CMD_AT_CLIR:
log_cmd_response_error(pvt, ecmd, "[%s] Setting CLIR failed\n", PVT_ID(pvt));
break;
case CMD_AT_CHLD_2:
if (!CPVT_TEST_FLAG(task->cpvt, CALL_FLAG_HOLD_OTHER) ||
task->cpvt->state != CALL_STATE_INIT) {
break;
}
/* fall through */
case CMD_AT_D:
log_cmd_response_error(pvt, ecmd, "[%s] Dial failed\n", PVT_ID(pvt));
queue_control_channel (task->cpvt, AST_CONTROL_CONGESTION);
break;
case CMD_AT_DDSETEX:
log_cmd_response_error(pvt, ecmd, "[%s] %s (setup voice) failed\n", PVT_ID(pvt), at_cmd2str(ecmd->cmd));
break;
case CMD_AT_CHUP:
case CMD_AT_CHLD_1x:
log_cmd_response_error(pvt, ecmd, "[%s] Error sending hangup for call idx %d\n", PVT_ID(pvt), task->cpvt->call_idx);
break;
case CMD_AT_CMGR:
log_cmd_response_error(pvt, ecmd, "[%s] Error reading SMS message\n", PVT_ID(pvt));
at_retrieve_next_sms(&pvt->sys_chan, at_cmd_suppress_error_mode(ecmd->flags));
break;
case CMD_AT_CMGD:
log_cmd_response_error(pvt, ecmd, "[%s] Error deleting SMS message\n", PVT_ID(pvt));
break;
case CMD_AT_CMGS:
case CMD_AT_SMSTEXT:
pvt->outgoing_sms = 0;
pvt_try_restate(pvt);
{
char payload[SMSDB_PAYLOAD_MAX_LEN];
char dst[SMSDB_DST_MAX_LEN];
ssize_t payload_len = smsdb_outgoing_clear(task->uid, dst, payload);
if (payload_len >= 0) {
ast_verb (3, "[%s] Error payload: %.*s\n", PVT_ID(pvt), (int) payload_len, payload);
channel_var_t vars[] =
{
{ "SMS_REPORT_PAYLOAD", payload },
{ "SMS_REPORT_TS", "" },
{ "SMS_REPORT_DT", "" },
{ "SMS_REPORT_SUCCESS", "0" },
{ "SMS_REPORT_TYPE", "i" },
{ "SMS_REPORT", "" },
{ NULL, NULL },
};
start_local_channel(pvt, "report", dst, vars);
manager_event_report(PVT_ID(pvt), payload, payload_len, "", "", 0, 0, "");
}
}
ast_verb (3, "[%s] Error sending SMS message %p\n", PVT_ID(pvt), task);
log_cmd_response_error(pvt, ecmd, "[%s] Error sending SMS message %p %s\n", PVT_ID(pvt), task, at_cmd2str (ecmd->cmd));
break;
case CMD_AT_DTMF:
log_cmd_response_error(pvt, ecmd, "[%s] Error sending DTMF\n", PVT_ID(pvt));
break;
case CMD_AT_COPS:
ast_debug (1, "[%s] Could not get provider name\n", PVT_ID(pvt));
break;
case CMD_AT_CLVL:
ast_debug (1, "[%s] Audio level synchronization failed at step %d/%d\n", PVT_ID(pvt), pvt->volume_sync_step, VOLUME_SYNC_DONE-1);
pvt->volume_sync_step = VOLUME_SYNC_BEGIN;
break;
case CMD_AT_CUSD:
ast_verb (3, "[%s] Error sending USSD %p\n", PVT_ID(pvt), task);
log_cmd_response_error(pvt, ecmd, "[%s] Error sending USSD %p\n", PVT_ID(pvt), task);
break;
default:
log_cmd_response_error(pvt, ecmd, "[%s] Received 'ERROR' for unhandled command '%s'\n", PVT_ID(pvt), at_cmd2str (ecmd->cmd));
break;
}
at_queue_handle_result (pvt, res);
}
else if (ecmd)
{
switch (ecmd->cmd) {
case CMD_AT_CMGR:
at_retrieve_next_sms(&pvt->sys_chan, at_cmd_suppress_error_mode(ecmd->flags));
break;
default:
log_cmd_response_error(pvt, ecmd, "[%s] Received 'ERROR' when expecting '%s', ignoring\n", PVT_ID(pvt), at_res2str (ecmd->res));
break;
}
}
else
{
log_cmd_response_error(pvt, ecmd, "[%s] Received unexpected 'ERROR'\n", PVT_ID(pvt));
}
return 0;
e_return:
at_queue_handle_result (pvt, res);
return -1;
}
/*!
* \brief Handle ^RSSI response Here we get the signal strength.
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \param len -- string lenght
* \retval 0 success
* \retval -1 error
*/
static int at_response_rssi (struct pvt* pvt, const char* str)
{
int rssi = at_parse_rssi (str);
if (rssi == -1)
{
ast_debug (2, "[%s] Error parsing RSSI event '%s'\n", PVT_ID(pvt), str);
return -1;
}
pvt->rssi = rssi;
return 0;
}
/*!
* \brief Handle ^MODE response Here we get the link mode (GSM, UMTS, EDGE...).
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \param len -- string lenght
* \retval 0 success
* \retval -1 error
*/
static int at_response_mode (struct pvt* pvt, char* str, size_t len)
{
int mode;
int submode;
int rv = at_parse_mode (str, &mode, &submode);
if(rv)
{
ast_debug (2, "[%s] Error parsing MODE event '%.*s'\n", PVT_ID(pvt), (int) len, str);
}
else
{
pvt->linkmode = mode;
pvt->linksubmode = submode;
}
return rv;
}
static void request_clcc(struct pvt* pvt)
{
if (at_enqueue_clcc(&pvt->sys_chan))
{
ast_log(LOG_ERROR, "[%s] Error enqueue List Current Calls request\n", PVT_ID(pvt));
}
}
/*!
* \brief Handle ^ORIG response
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \retval 0 success
* \retval -1 error
*/
static int at_response_orig (struct pvt* pvt, const char* str)
{
int call_index;
int call_type;
struct cpvt * cpvt = pvt->last_dialed_cpvt;
pvt->last_dialed_cpvt = NULL;
if(!cpvt)
{
ast_log (LOG_ERROR, "[%s] ^ORIG '%s' for unknown ATD\n", PVT_ID(pvt), str);
return 0;
}
/*
* parse ORIG info in the following format:
* ^ORIG:<call_index>,<call_type>
*/
if (sscanf (str, "^ORIG:%d,%d", &call_index, &call_type) != 2)
{
ast_log (LOG_ERROR, "[%s] Error parsing ORIG event '%s'\n", PVT_ID(pvt), str);
return -1;
}
ast_debug (1, "[%s] ORIG Received call_index: %d call_type %d\n", PVT_ID(pvt), call_index, call_type);
if (call_type == CLCC_CALL_TYPE_VOICE)
{
if(call_index >= MIN_CALL_IDX && call_index <= MAX_CALL_IDX)
{
/* set REAL call idx */
/* WARNING if direction mismatch
cpvt->dir = CALL_DIR_OUTGOING;
*/
cpvt->call_idx = call_index;
change_channel_state(cpvt, CALL_STATE_DIALING, 0);
/* TODO: move to CONN ? */
if(pvt->volume_sync_step == VOLUME_SYNC_BEGIN)
{
pvt->volume_sync_step = VOLUME_SYNC_BEGIN;
if (at_enqueue_volsync(cpvt))
{
ast_log (LOG_ERROR, "[%s] Error synchronize audio level\n", PVT_ID(pvt));
}
else
pvt->volume_sync_step++;
}
request_clcc(pvt);
}
}
else
{
/* FIXME: and reset call if no-voice, bad call_index !
*/
ast_log (LOG_ERROR, "[%s] ORIG event for non-voice call type '%d' index %d\n", PVT_ID(pvt), call_type, call_index);
}
return 0;
}
#if 0
/*!
* \brief Handle ^CONF response
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \retval 0 success
* \retval -1 error
*/
static int at_response_conf (struct pvt* pvt, const char* str)
{
int call_index;
struct cpvt * cpvt;
/*
* parse CONF info in the following format:
* ^CONF: <call_index>
*/
if (sscanf (str, "^CONF:%d", &call_index) != 1)
{
ast_log (LOG_ERROR, "[%s] Error parsing CONF event '%s'\n", PVT_ID(pvt), str);
return -1;
}
ast_debug (1, "[%s] CONF Received call_index %d\n", PVT_ID(pvt), call_index);
cpvt = pvt_find_cpvt(pvt, call_index);
if(cpvt)
{
channel_change_state(cpvt, CALL_STATE_ALERTING, 0);
}
return 0;
}
#endif /* 0 */
/*!
* \brief Handle ^CEND response
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \param len -- string lenght
* \retval 0 success
* \retval -1 error
*/
static int at_response_cend (struct pvt * pvt, const char* str)
{
int call_index = 0;
int duration = 0;
int end_status = 0;
int cc_cause = 0;
struct cpvt * cpvt;
request_clcc(pvt);
/*
* parse CEND info in the following format:
* ^CEND:<call_index>,<duration>,<end_status>[,<cc_cause>]
*/
if (sscanf (str, "^CEND:%d,%d,%d,%d", &call_index, &duration, &end_status, &cc_cause) != 4)
{
ast_debug (1, "[%s] Could not parse all CEND parameters\n", PVT_ID(pvt));
}
ast_debug (1, "[%s] CEND: call_index %d duration %d end_status %d cc_cause %d Line disconnected\n"
, PVT_ID(pvt), call_index, duration, end_status, cc_cause);
cpvt = pvt_find_cpvt(pvt, call_index);
if (cpvt)
{
CPVT_RESET_FLAGS(cpvt, CALL_FLAG_NEED_HANGUP);
PVT_STAT(pvt, calls_duration[cpvt->dir]) += duration;
change_channel_state(cpvt, CALL_STATE_RELEASED, cc_cause);
manager_event_cend(PVT_ID(pvt), call_index, duration, end_status, cc_cause);
}
else
{
// ast_log (LOG_ERROR, "[%s] CEND event for unknown call idx '%d'\n", PVT_ID(pvt), call_index);
}
return 0;
}
/*!
* \brief Handle +CSCA response
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \param len -- string lenght
* \retval 0 success
* \retval -1 error
*/
static int at_response_csca (struct pvt* pvt, char* str)
{
char * csca;
if(at_parse_csca(str, &csca))
{
ast_debug (1, "[%s] Could not parse CSCA response '%s'\n", PVT_ID(pvt), str);
return -1;
}
ast_copy_string (pvt->sms_scenter, csca, sizeof (pvt->sms_scenter));
ast_debug (1, "[%s] CSCA: %s\n", PVT_ID(pvt), pvt->sms_scenter);
return 0;
}
/*!
* \brief Handle ^CONN response
* \param pvt -- pvt structure
* \retval 0 success
* \retval -1 error
*/
static int at_response_conn (struct pvt* pvt, const char* str)
{
int call_index;
int call_type;
struct cpvt * cpvt;
pvt->ring = 0;
pvt->dialing = 0;
pvt->cwaiting = 0;
request_clcc(pvt);
/*
* parse CONN info in the following format:
* ^CONN:<call_index>,<call_type>
*/
if (sscanf (str, "^CONN:%d,%d", &call_index, &call_type) != 2)
{
ast_log (LOG_ERROR, "[%s] Error parsing CONN event '%s'\n", PVT_ID(pvt), str);
return -1;
}
ast_debug (1, "[%s] CONN Received call_index %d call_type %d\n", PVT_ID(pvt), call_index, call_type);
if (call_type == CLCC_CALL_TYPE_VOICE)
{
cpvt = pvt_find_cpvt(pvt, call_index);
if(cpvt)
{
/* FIXME: delay until CLCC handle?
*/
PVT_STAT(pvt, calls_answered[cpvt->dir]) ++;
change_channel_state(cpvt, CALL_STATE_ACTIVE, 0);
if(CPVT_TEST_FLAG(cpvt, CALL_FLAG_CONFERENCE))
at_enqueue_conference(cpvt);
}
else
{
at_enqueue_hangup(&pvt->sys_chan, call_index);
ast_log (LOG_ERROR, "[%s] answered incoming call with not exists call idx %d, hanging up!\n", PVT_ID(pvt), call_index);
}
}
else
ast_log (LOG_ERROR, "[%s] answered not voice incoming call type '%d' idx %d, skipped\n", PVT_ID(pvt), call_type, call_index);
return 0;
}
static int start_pbx(struct pvt* pvt, const char * number, int call_idx, call_state_t state)
{
struct cpvt* cpvt;
/* TODO: pass also Subscriber number or other DID info for exten */
#if ASTERISK_VERSION_NUM >= 120000 /* 12+ */
struct ast_channel * channel = new_channel(
pvt, AST_STATE_RING, number, call_idx, CALL_DIR_INCOMING, state,
pvt->has_subscriber_number ? pvt->subscriber_number : CONF_SHARED(pvt, exten),
NULL, NULL);
#else /* 12- */
struct ast_channel * channel = new_channel(
pvt, AST_STATE_RING, number, call_idx, CALL_DIR_INCOMING, state,
pvt->has_subscriber_number ? pvt->subscriber_number : CONF_SHARED(pvt, exten),
NULL);
#endif /* ^12- */
if (!channel)
{
ast_log (LOG_ERROR, "[%s] Unable to allocate channel for incoming call\n", PVT_ID(pvt));
if (at_enqueue_hangup(&pvt->sys_chan, call_idx))
{
ast_log (LOG_ERROR, "[%s] Error sending AT+CHUP command\n", PVT_ID(pvt));
}
return -1;
}
cpvt = ast_channel_tech_pvt(channel);
// FIXME: not execute if channel_new() failed
CPVT_SET_FLAGS(cpvt, CALL_FLAG_NEED_HANGUP);
/* ast_pbx_start() usually failed if asterisk.conf minmemfree
* set too low, try drop buffer cache
* sync && echo 3 >/proc/sys/vm/drop_caches
*/
if (ast_pbx_start (channel))
{
ast_channel_tech_pvt_set(channel, NULL);
cpvt_free(cpvt);
ast_hangup (channel);
ast_log (LOG_ERROR, "[%s] Unable to start pbx on incoming call\n", PVT_ID(pvt));
// TODO: count fails and reset incoming when count reach limit ?
return -1;
}
return 0;
}
/*!
* \brief Handle +CLCC response
* \param pvt -- pvt structure
* \param str -- string containing response (null terminated)
* \param len -- string lenght
* \retval 0 success
* \retval -1 error
*/
static int at_response_clcc (struct pvt* pvt, char* str)
{
struct cpvt * cpvt;
unsigned call_idx, dir, state, mode, mpty, type;
unsigned all = 0;
unsigned held = 0;
char * number;
char *p;
if (pvt->initialized)
{
/* I think man is good until he proves the reverse */
AST_LIST_TRAVERSE(&pvt->chans, cpvt, entry)
{
CPVT_RESET_FLAGS(cpvt, CALL_FLAG_ALIVE);
}
for(;;)
{
p = strchr(str, '\r');
if(at_parse_clcc(str, &call_idx, &dir, &state, &mode, &mpty, &number, &type) == 0)
{
ast_debug (3, "[%s] CLCC callidx %u dir %u state %u mode %u mpty %u number %s type %u\n", PVT_ID(pvt), call_idx, dir, state, mode, mpty, number, type);
if(mode == CLCC_CALL_TYPE_VOICE && state <= CALL_STATE_WAITING)
{
cpvt = pvt_find_cpvt(pvt, call_idx);
if(cpvt)
{
/* cpvt alive */
CPVT_SET_FLAGS(cpvt, CALL_FLAG_ALIVE);
if(dir == cpvt->dir)
{
if(mpty)
CPVT_SET_FLAGS(cpvt, CALL_FLAG_MULTIPARTY);
else
CPVT_RESET_FLAGS(cpvt, CALL_FLAG_MULTIPARTY);
if(dir == CALL_DIR_INCOMING && (state == CALL_STATE_INCOMING || state == CALL_STATE_WAITING))
{
if(cpvt->channel)
{
/* FIXME: unprotected channel access */
int rings = ast_channel_rings(cpvt->channel);
rings += pvt->rings;
ast_channel_rings_set(cpvt->channel, rings);
pvt->rings = 0;
}
}
if(state != cpvt->state)
{
change_channel_state(cpvt, state, 0);
}
}
else
{
ast_log (LOG_ERROR, "[%s] CLCC call idx %d direction mismatch %d/%d\n", PVT_ID(pvt), cpvt->call_idx, dir, cpvt->dir);
}
}
else if(dir == CALL_DIR_INCOMING && (state == CALL_STATE_INCOMING || state == CALL_STATE_WAITING))
{
if(state == CALL_STATE_INCOMING)
PVT_STAT(pvt, in_calls) ++;
else
PVT_STAT(pvt, cw_calls) ++;
if(pvt_enabled(pvt))
{
/* TODO: give dialplan level user tool for checking device is voice enabled or not */
if(start_pbx(pvt, number, call_idx, state) == 0)
{
PVT_STAT(pvt, in_calls_handled) ++;
if(!pvt->has_voice)
ast_log (LOG_WARNING, "[%s] pbx started for device not voice capable\n", PVT_ID(pvt));
}
else
PVT_STAT(pvt, in_pbx_fails) ++;
}
}
all++;
switch(state)
{
case CALL_STATE_WAITING:
pvt->cwaiting = 1;
pvt->ring = 0;
pvt->dialing = 0;
break;
case CALL_STATE_ONHOLD:
held++;
break;
case CALL_STATE_DIALING:
case CALL_STATE_ALERTING:
pvt->dialing = 1;
pvt->cwaiting = 0;
pvt->ring = 0;
break;
case CALL_STATE_INCOMING:
pvt->ring = 1;
pvt->dialing = 0;
pvt->cwaiting = 0;
break;