mbtk/mbtk_rild_v2/src/ril_net.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <pthread.h>
#include <sys/epoll.h>
#include <fcntl.h>
#include <signal.h>
#include <cutils/properties.h>
#include <arpa/inet.h>

#include "mbtk_type.h"
#include "mbtk_ril.h"
#include "atchannel.h"
#include "at_tok.h"
#include "mbtk_utils.h"
#include "ril_info.h"
#include "mbtk_str.h"

mbtk_cell_pack_info_t cell_info;
ril_cgact_wait_t cgact_wait;

extern ril_band_info_t band_info;
void ril_rsp_pack_send(int fd, int ril_id, int msg_index, const void* data, int data_len);
static int req_apn_get(bool get_def_cid, mbtk_apn_info_array_t *apns, int *cme_err);
static int req_apn_set(mbtk_apn_info_t *apn, int *cme_err);
static void apn_prop_get(ril_apn_info_array_t *apns);

void apn_auto_conf_from_prop()
{
    ril_apn_info_array_t apns;
    int i = 0;
    memset(&apns, 0, sizeof(ril_apn_info_array_t));
    apn_prop_get(&apns);
    while(i < apns.num) {
        int cme_err = MBTK_RIL_ERR_CME_NON;
        if(req_apn_set(&(apns.apns[i]), &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
        {
            LOGD("Set APN fail.");
        }
        else
        {
            LOGD("Set APN - %d success.", apns.apns[i].cid);
        }
        i++;
    }
}

static bool apn_conf_support(mbtk_ril_cid_enum cid)
{
    if(cid == MBTK_RIL_CID_DEF) {
        /*
        uci show wan_default.default.enable
        wan_default.default.enable='1'

        uci get wan_default.default.enable
        1
        */
        char buff[128] = {0};
        if(mbtk_cmd_line("uci get wan_default.default.enable", buff, sizeof(buff)) && strlen(buff) > 0) {
            return buff[0] == '1' ? FALSE : TRUE;
        }
    }
    return TRUE;
}

static int apn_check_and_cid_reset(mbtk_apn_info_t *apn)
{
    // Delete apn
    if(str_empty(apn->apn)) {
        if(apn->cid == MBTK_RIL_CID_NUL)
            return -1;

        if(!apn_conf_support(MBTK_RIL_CID_DEF) && apn->cid == MBTK_RIL_CID_DEF)
            return -1;

        // The cid no use,so can not delete.
        mbtk_apn_info_array_t apns;
        int cme_err = MBTK_RIL_ERR_CME_NON;
        memset(&apns, 0, sizeof(mbtk_apn_info_array_t));
        if(req_apn_get(FALSE, &apns, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
        {
            LOGW("Get APN fail.");
            return 0;
        }
        else
        {
            int index = 0;
            while(index < apns.num) {
                if(apns.apns[index].cid == apn->cid)
                    return 0;
                index++;
            }
            return -1;
        }
    } else { // Add or change APN.
        int start_cid;
        bool asr_auto_call_open = !apn_conf_support(MBTK_RIL_CID_DEF);
        mbtk_apn_info_array_t apns;
        int cme_err = MBTK_RIL_ERR_CME_NON;

        if(asr_auto_call_open) {
            start_cid = MBTK_RIL_CID_2;
        } else {
            start_cid = MBTK_APN_CID_MIN;
        }
        memset(&apns, 0, sizeof(mbtk_apn_info_array_t));
        if(req_apn_get(TRUE, &apns, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
        {
            LOGW("Get APN fail.");
            if(apn->cid == MBTK_RIL_CID_NUL) {
                apn->cid = start_cid;
            }
        }
        else
        {
            int index = 0;
            bool is_change = FALSE;  // Is add APN default.

            if(apn->cid == MBTK_RIL_CID_NUL) { // Is add (auto set cid).
                for(; start_cid <= MBTK_APN_CID_MAX; start_cid++) {
                    index = 0;
                    while(index < apns.num) {
                        if(apns.apns[index].cid == start_cid)
                            break;
                        index++;
                    }

                    if(index == apns.num) { // Found not used cid : start_cid.
                        LOGD("Change CID : %d -> %d", apn->cid, start_cid);
                        apn->cid = start_cid;
                        // return 0;
                        break;
                    }
                }

                if(start_cid > MBTK_APN_CID_MAX) {
                    LOGE("APN full.");
                    return -1;
                }
                is_change = FALSE;
            } else {
                index = 0;
                while(index < apns.num) {
                    if(apns.apns[index].cid == apn->cid) {
                        is_change = TRUE;
                        break;
                    }
                    index++;
                }
            }

            // Is add,the APN can't same.
            if(!is_change) {
                index = 0;
                while(index < apns.num) {
                    if(strcmp(apns.apns[index].apn,apn->apn) == 0) {
                        LOGW("APN : %s exist.", apn->apn);
                        return -1;
                    }
                    index++;
                }
            }
        }
    }
    return 0;
}

static void apn_prop_get(ril_apn_info_array_t *apns)
{
    char prop_name[20] = {0};
    char prop_data[300] = {0};
    int cid;
    memset(apns, 0, sizeof(ril_apn_info_array_t));
    bool asr_auto_call_open = !apn_conf_support(MBTK_RIL_CID_DEF);

    // If auto data call is open,the default route is CID 1.
    if(asr_auto_call_open) {
        apns->cid_for_def_route = MBTK_RIL_CID_DEF;
        apns->cid_for_dns = MBTK_RIL_CID_DEF;
        cid = MBTK_RIL_CID_2;
    } else {
        if(property_get(MBTK_DEF_ROUTE_CID, prop_data, "") > 0 && !str_empty(prop_data)) {
            apns->cid_for_def_route = (mbtk_ril_cid_enum)atoi(prop_data);
        }
        memset(prop_data, 0, sizeof(prop_data));
        if(property_get(MBTK_DEF_DNS_CID, prop_data, "") > 0 && !str_empty(prop_data)) {
            apns->cid_for_dns = (mbtk_ril_cid_enum)atoi(prop_data);
        }
        cid = MBTK_APN_CID_MIN;
    }
    for(; cid <= MBTK_APN_CID_MAX; cid++) {
        memset(prop_name, 0, 20);
        memset(prop_data, 0, 300);

        sprintf(prop_name, "%s_%d",MBTK_APN_PROP,cid);
        // ip_type,auth,auto_data_call,apn,user,pass
        if(property_get(prop_name, prop_data, "") > 0 && !str_empty(prop_data)) {
            apns->apns[apns->num].cid = (mbtk_ril_cid_enum)cid;
            char *ptr_1 = prop_data;
            apns->apns[apns->num].ip_type = (mbtk_ip_type_enum)atoi(ptr_1);
            ptr_1 = strstr(ptr_1, ",");
            if(!ptr_1) {
                continue;
            }
            ptr_1++; // Jump ',' to auth

            apns->apns[apns->num].auth = (mbtk_apn_auth_type_enum)atoi(ptr_1);
            ptr_1 = strstr(ptr_1, ",");
            if(!ptr_1) {
                continue;
            }
            ptr_1++; // Jump ',' to auto_data_call

            apns->apns[apns->num].auto_boot_call = (uint8)atoi(ptr_1);
            ptr_1 = strstr(ptr_1, ",");
            if(!ptr_1) {
                continue;
            }
            ptr_1++; // Jump ',' to apn

            char *ptr_2 = strstr(ptr_1, ",");
            if(!ptr_2) {
                continue;
            }
            if(memcmp(ptr_1, "NULL", 4)) { // Not "NULL"
                memcpy(apns->apns[apns->num].apn, ptr_1, ptr_2 - ptr_1); // apn
            }

            ptr_2++; // Jump ',' to user
            ptr_1 = strstr(ptr_2, ",");
            if(!ptr_1) {
                continue;
            }
            if(memcmp(ptr_2, "NULL", 4)) { // Not "NULL"
                memcpy(apns->apns[apns->num].user, ptr_2, ptr_1 - ptr_2); // user
            }

            ptr_1++; // Jump ',' to pass
            if(memcmp(ptr_1, "NULL", 4)) { // Not "NULL"
                memcpy(apns->apns[apns->num].pass, ptr_1, strlen(ptr_1)); // pass
            }

            apns->num++;
        }
    }
}

static int apn_prop_get_by_cid(mbtk_ril_cid_enum cid, mbtk_apn_info_t *apn)
{
    char prop_name[20] = {0};
    char prop_data[300] = {0};
    memset(apn, 0, sizeof(mbtk_apn_info_t));

    sprintf(prop_name, "%s_%d",MBTK_APN_PROP,cid);
    // ip_type,auth,auto_data_call,apn,user,pass
    if(property_get(prop_name, prop_data, "") > 0 && !str_empty(prop_data)) {
        apn->cid = cid;
        apn->auto_save = (uint8)1;
        char *ptr_1 = prop_data;
        apn->ip_type = (mbtk_ip_type_enum)atoi(ptr_1);
        ptr_1 = strstr(ptr_1, ",");
        if(!ptr_1) {
            return -1;
        }
        ptr_1++; // Jump ',' to auth

        apn->auth = (mbtk_apn_auth_type_enum)atoi(ptr_1);
        ptr_1 = strstr(ptr_1, ",");
        if(!ptr_1) {
            return -1;
        }
        ptr_1++; // Jump ',' to auto_data_call

        apn->auto_boot_call = (uint8)atoi(ptr_1);
        ptr_1 = strstr(ptr_1, ",");
        if(!ptr_1) {
            return -1;
        }
        ptr_1++; // Jump ',' to apn

        char *ptr_2 = strstr(ptr_1, ",");
        if(!ptr_2) {
            return -1;
        }
        if(memcmp(ptr_1, "NULL", 4)) { // Not "NULL"
            memcpy(apn->apn, ptr_1, ptr_2 - ptr_1); // apn
        }

        ptr_2++; // Jump ',' to user
        ptr_1 = strstr(ptr_2, ",");
        if(!ptr_1) {
            return -1;
        }
        if(memcmp(ptr_2, "NULL", 4)) { // Not "NULL"
            memcpy(apn->user, ptr_2, ptr_1 - ptr_2); // user
        }

        ptr_1++; // Jump ',' to pass
        if(memcmp(ptr_1, "NULL", 4)) { // Not "NULL"
            memcpy(apn->pass, ptr_1, strlen(ptr_1)); // pass
        }
        return 0;
    }
    return -1;
}

static int apn_prop_set(mbtk_apn_info_t *apn)
{
    char prop_name[20] = {0};
    char prop_data[300] = {0};
    int ret = -1;
    if(apn->auto_save) {
        sprintf(prop_name, "%s_%d", MBTK_APN_PROP, apn->cid);
        // Delete apn
        if(!str_empty(apn->apn)) {
            snprintf(prop_data, 300, "%d,%d,%d,%s,%s,%s", apn->ip_type, apn->auth, apn->auto_boot_call,
                apn->apn,
                str_empty(apn->user) ? "NULL" : apn->user,
                str_empty(apn->pass) ? "NULL" : apn->pass);
        }

        ret = property_set(prop_name, prop_data);
    }

    if(apn->def_route) {
        memset(prop_data, 0, sizeof(prop_data));
        prop_data[0] = '0' + apn->cid;
        ret = property_set(MBTK_DEF_ROUTE_CID, prop_data);
    }
    if(apn->as_dns) {
        memset(prop_data, 0, sizeof(prop_data));
        prop_data[0] = '0' + apn->cid;
        ret = property_set(MBTK_DEF_DNS_CID, prop_data);
    }
    return ret;
}

static int apn_prop_reset(mbtk_data_call_info_t *data_info)
{
    mbtk_apn_info_t apn;
    if(apn_prop_get_by_cid(data_info->cid, &apn)) {
        return -1;
    } else {
        apn.auto_boot_call = data_info->auto_boot_call;
        apn.def_route = data_info->def_route;
        apn.as_dns = data_info->as_dns;
        return apn_prop_set(&apn);
    }
}

static int wait_cgact_complete(int timeout)
{
    int count = timeout * 10; // timeout * 1000 / 100
    int i = 0;

    while(cgact_wait.waitting && i < count) {
        i++;
        usleep(100000); // 100ms
    }

    memset(&cgact_wait, 0, sizeof(ril_cgact_wait_t));
    if(i == count) { // Timeout
        return -1;
    } else {
        return 0;
    }
}

/*
AT+COPS=?

+COPS: (2, "CHN-CT", "CT", "46011", 7),(3, "CHN-UNICOM", "UNICOM", "46001", 7),(3, "CHINA MOBILE", "CMCC", "46000", 0),(3, "CHINA MOBILE", "CMCC", "46000", 7),(3, "China Broadnet", "CBN", "46015", 7),,(0,1,2,3,4),(0,1,2)

OK
*/
static int req_available_net_get(mbtk_net_info_array_t* nets, int *cme_err)
{
    ATResponse *response = NULL;
    int err = at_send_command_singleline("AT+COPS=?", "+COPS:", &response);

    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }
    char *line_ptr = response->p_intermediates->line;
    if(line_ptr == NULL) {
        LOG("line is NULL");
        err = -1;
        goto exit;
    }
    //LOG("Line:%s",line_ptr);
    line_ptr = strstr(line_ptr, "(");
    while(line_ptr) {
        line_ptr++;
        // Only for available/current net.
        if(*line_ptr == '1' || *line_ptr == '2' || *line_ptr == '3') {
            nets->net_info[nets->num].net_state = (uint8)atoi(line_ptr); // net_state

            line_ptr = strstr(line_ptr, ",");
            if(line_ptr == NULL) {
                err = -1;
                goto exit;
            }
            line_ptr++;

            line_ptr = strstr(line_ptr, ",");
            if(line_ptr == NULL) {
                err = -1;
                goto exit;
            }
            line_ptr++;

            line_ptr = strstr(line_ptr, ",");
            if(line_ptr == NULL) {
                err = -1;
                goto exit;
            }

            while(*line_ptr != '\0' && (*line_ptr == ',' || *line_ptr == ' ' || *line_ptr == '"'))
                line_ptr++;

            // set sel_mode to 0
            nets->net_info[nets->num].net_sel_mode = (uint8)0;
            // Point to "46000"
            //LOG("PLMN:%s",line_ptr);
            //sleep(1);
            //uint32_2_byte((uint32)atoi(line_ptr), buff_ptr + 3, false); // plmn
            nets->net_info[nets->num].plmn = (uint32)atoi(line_ptr);

            line_ptr = strstr(line_ptr, ",");
            if(line_ptr == NULL) {
                err = -1;
                goto exit;
            }

            while(*line_ptr != '\0' && (*line_ptr == ',' || *line_ptr == ' '))
                line_ptr++;

            // Point to "7"
            if(*line_ptr == '\0') {
                err = -1;
                goto exit;
            }
            //LOG("Type:%s",line_ptr);
            //sleep(1);
            nets->net_info[nets->num].net_type = (uint8)atoi(line_ptr); // net_type

            nets->num++;
        }

        line_ptr = strstr(line_ptr, "(");
    }
exit:
    at_response_free(response);
    return err;
}

/*
AT+COPS?
+COPS: 1

OK

or

AT+COPS?
+COPS: 0,2,"46001",7

OK

*/
static int req_net_sel_mode_get(mbtk_net_info_t *net, int *cme_err)
{
    //LOG("req_net_sel_mode_get() 0");
    //sleep(1);
    ATResponse *response = NULL;
    int tmp_int;
    char *tmp_ptr = NULL;
    int err = at_send_command_singleline("AT+COPS?", "+COPS:", &response);
    //LOG("req_net_sel_mode_get() 00");
    //sleep(1);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err != NULL)
            *cme_err = at_get_cme_error(response);
        err = -1;
        goto exit;
    }
    //LOG("req_net_sel_mode_get() 1");
    //sleep(1);
    char *line = response->p_intermediates->line;
    if(line == NULL) {
        LOG("line is NULL");
        goto exit;
    }
    //LOG("req_net_sel_mode_get() 2");
    //sleep(1);
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    //LOG("req_net_sel_mode_get() 3");
    //sleep(1);
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    net->net_sel_mode = (uint8)tmp_int;
    //LOG("req_net_sel_mode_get() 4");
    //sleep(1);
    // +COPS: 1
    if(!at_tok_hasmore(&line)) {
        goto exit;
    }
    //LOG("req_net_sel_mode_get() 5");
    //sleep(1);
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    //LOG("req_net_sel_mode_get() 6");
    //sleep(1);
    err = at_tok_nextstr(&line, &tmp_ptr);
    if (err < 0)
    {
        goto exit;
    }
    // memcpy(net->plmn, tmp_ptr, strlen(tmp_ptr));
    net->plmn = (uint32)atoi(tmp_ptr);
    //LOG("req_net_sel_mode_get() 7");
    //sleep(1);
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    net->net_type = (uint8)tmp_int;

    net->net_state = (uint8)MBTK_NET_AVIL_STATE_CURRENT;

exit:
    //LOG("req_net_sel_mode_get() 8");
    //sleep(1);
    at_response_free(response);
    return err;
}

/*
AT+COPS=0
or
AT+COPS=1,2,"46000",7

OK

*/
static int req_net_sel_mode_set(mbtk_net_info_t* net, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[50] = {0};
    char* cmp_ptr = cmd;
    if(net == NULL) {
        cmp_ptr += sprintf(cmp_ptr, "AT+COPS=0");
     } else {
        if(net->net_sel_mode == 0) {
            cmp_ptr += sprintf(cmp_ptr, "AT+COPS=0");
        } else if(net->net_type == 0xFF) {
            cmp_ptr += sprintf(cmp_ptr, "AT+COPS=1,2,\"%d\"",net->plmn);
        } else {
            cmp_ptr += sprintf(cmp_ptr, "AT+COPS=1,2,\"%d\",%d",net->plmn, net->net_type);
        }
     }

    int err = at_send_command(cmd, &response);

    if (err < 0 || response->success == 0) {
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

exit:
    at_response_free(response);
    return err;
}

/*
AT*BAND=15
OK

*/
static int req_band_set(mbtk_band_info_t* band, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[100] = {0};
    int err = -1;

    if(band->gsm_band == 0 && band->umts_band == 0
        && band->tdlte_band == 0 && band->fddlte_band == 0) {
        sprintf(cmd, "AT*BAND=%d", band->net_pref);
    } else {
        log_hex("BAND_SUPPORT", &band_info.band_support, sizeof(mbtk_band_info_t));
        log_hex("BAND", band, sizeof(mbtk_band_info_t));

        if(band->gsm_band == 0) {
            band->gsm_band = band_info.band_support.gsm_band;
        }
        if(band->umts_band == 0) {
            band->umts_band = band_info.band_support.umts_band;
        }
        if(band->tdlte_band == 0) {
            band->tdlte_band = band_info.band_support.tdlte_band;
        }
        if(band->fddlte_band == 0) {
            band->fddlte_band = band_info.band_support.fddlte_band;
        }

        if((band->gsm_band & band_info.band_support.gsm_band) != band->gsm_band) {
            LOG("GSM band error.");
            goto exit;
        }

        if((band->umts_band & band_info.band_support.umts_band) != band->umts_band) {
            LOG("UMTS band error.");
            goto exit;
        }

        if((band->tdlte_band & band_info.band_support.tdlte_band) != band->tdlte_band) {
            LOG("TDLTE band error.");
            goto exit;
        }

        if((band->fddlte_band & band_info.band_support.fddlte_band) != band->fddlte_band) {
            LOG("FDDLTE band error.");
            goto exit;
        }

        if((band->lte_ext_band & band_info.band_support.lte_ext_band) != band->lte_ext_band) {
            LOG("EXT_LTE band error.");
            goto exit;
        }

        if(band->net_pref == 0xFF) { // No change net_pref.
            int tmp_int;
            err = at_send_command_singleline("AT*BAND?", "*BAND:", &response);
            if (err < 0 || response->success == 0 || !response->p_intermediates){
                if(cme_err) {
                    *cme_err = at_get_cme_error(response);
                }
                goto exit;
            }

            char *line = response->p_intermediates->line;
            err = at_tok_start(&line);
            if (err < 0)
            {
                goto exit;
            }

            err = at_tok_nextint(&line, &tmp_int);
            if (err < 0)
            {
                goto exit;
            }
            band->net_pref = (uint8)tmp_int; // Set to current net_pref.

            at_response_free(response);
        }

        if(band->lte_ext_band > 0) {
            sprintf(cmd, "AT*BAND=%d,%d,%d,%d,%d,,,,%d", band->net_pref, band->gsm_band, band->umts_band, band->tdlte_band, band->fddlte_band, band->lte_ext_band);
        } else {
            sprintf(cmd, "AT*BAND=%d,%d,%d,%d,%d", band->net_pref, band->gsm_band, band->umts_band, band->tdlte_band, band->fddlte_band);
        }
    }
    err = at_send_command(cmd, &response);

    if (err < 0 || response->success == 0){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

    err = 0;
exit:
    at_response_free(response);
    return err;
}

/*
// ???????
AT*BAND=?
*BAND:(0-18),79,147,482,524503

OK

// ???????????
AT*BAND?
*BAND: 15, 78, 147, 482, 524503, 0, 2, 2, 0, 0

OK

// ?????????
AT*BAND=5,79,147,128,1
OK

net_prefferred??
    0 : GSM only
    1 : UMTS only
    2 : GSM/UMTS(auto)
    3 : GSM/UMTS(GSM preferred)
    4 : GSM/UMTS(UMTS preferred)
    5 : LTE only
    6 : GSM/LTE(auto)
    7 : GSM/LTE(GSM preferred)
    8 : GSM/LTE(LTE preferred)
    9 : UMTS/LTE(auto)
    10 : UMTS/LTE(UMTS preferred)
    11 : UMTS/LTE(LTE preferred)
    12 : GSM/UMTS/LTE(auto)
    13 : GSM/UMTS/LTE(GSM preferred)
    14 : GSM/UMTS/LTE(UMTS preferred)
    15 : GSM/UMTS/LTE(LTE preferred)
GSM band??
    1 ?C PGSM 900 (standard or primary)
    2 ?C DCS GSM 1800
    4 ?C PCS GSM 1900
    8 ?C EGSM 900 (extended)
    16 ?C GSM 450
    32 ?C GSM 480
    64 ?C GSM 850
    512 - BAND_LOCK_BIT // used for GSM band setting
UMTS band??
    1 ?C UMTS_BAND_1
    2 ?C UMTS_BAND_2
    4 ?C UMTS_BAND_3
    8 ?C UMTS_BAND_4
    16 ?C UMTS_BAND_5
    32 ?C UMTS_BAND_6
    64 ?C UMTS_BAND_7
    128 ?C UMTS_BAND_8
    256 ?C UMTS_BAND_9
LTEbandH(TDD-LTE band)
    32 ?C TDLTE_BAND_38
    64 ?C TDLTE_BAND_39
    128 ?C TDLTE_BAND_40
    256 ?C TDLTE_BAND_41
LTEbandL(FDD-LTE band)
    1 ?C FDDLTE_BAND_1
    4 ?C FDDLTE _BAND_3
    8 ?C FDDLTE _BAND_4
    64 ?C FDDLTE _BAND_7
    65536 ?C FDDLTE _BAND_17
    524288 ?C FDDLTE _BAND_20
*/
static int req_band_get(mbtk_band_info_t *band, int *cme_err)
{
    ATResponse *response = NULL;
    int tmp_int;

    log_hex("BAND_SUPPORT", &band_info.band_support, sizeof(mbtk_band_info_t));
    int err = at_send_command_singleline("AT*BAND?", "*BAND:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

    char *line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    band->net_pref = (uint8)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    band->gsm_band = (uint16)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    band->umts_band = (uint16)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    band->tdlte_band = (uint32)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    band->fddlte_band = (uint32)tmp_int;

    // roamingConfig
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }

    // srvDomain
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }

    // bandPriorityFlag
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }

    //
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }

    // ltebandExt
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    band->lte_ext_band = (uint32)tmp_int;

    log_hex("BAND", band, sizeof(mbtk_band_info_t));

exit:
    at_response_free(response);
    return err;
}

/*
AT+CSQ
+CSQ: 31,99

OK

AT+CESQ
+CESQ: 60,99,255,255,20,61

OK

AT+COPS?
+COPS: 0,2,"46001",7

OK

*/
static int req_net_signal_get(mbtk_signal_info_t *signal, int *cme_err)
{
    ATResponse *response = NULL;
    int tmp_int;
    char *tmp_ptr = NULL;
    // AT+EEMOPT=1 in the first.
    int err = at_send_command_singleline("AT+CSQ", "+CSQ:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err != NULL)
            *cme_err = at_get_cme_error(response);
        err = -1;
        goto exit;
    }

    char *line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->rssi = (uint8)tmp_int;
    at_response_free(response);

    err = at_send_command_singleline("AT+CESQ", "+CESQ:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err != NULL)
            *cme_err = at_get_cme_error(response);
        err = -1;
        goto exit;
    }

    line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->rxlev = (uint8)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->ber = (uint8)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->rscp = (uint8)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->ecno = (uint8)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->rsrq = (uint8)tmp_int;

    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->rsrp = (uint8)tmp_int;

    at_response_free(response);
    err = at_send_command_singleline("AT+COPS?", "+COPS:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err != NULL)
            *cme_err = at_get_cme_error(response);
        err = -1;
        goto exit;
    }
    line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    if(!at_tok_hasmore(&line)) {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextstr(&line, &tmp_ptr);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    signal->type = (uint8)tmp_int;

exit:
    at_response_free(response);
    return err;
}

/*
AT+CREG=3
OK

AT+CREG?
+CREG: 3,1,"8330","06447340",7

OK

AT+CREG?
+CREG: 3,0

OK

AT+CEREG?
+CEREG: 3,1,"8330","06447340",7

OK


AT+CIREG?
+CIREG: 2,1,15

OK

AT+CIREG?
+CIREG: 0

OK


*/
static int req_net_reg_get(mbtk_net_reg_info_t *reg, int *cme_err)
{
    ATResponse *response = NULL;
    int tmp_int;
    char *tmp_str = NULL;
    int err = at_send_command("AT+CREG=3", &response);
    if (err < 0 || response->success == 0){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }
    at_response_free(response);

    err = at_send_command_multiline("AT+CREG?", "+CREG:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

    char *line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int); // n
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);// stat
    if (err < 0)
    {
        goto exit;
    }
    reg->call_state = (uint8)tmp_int;

    if(at_tok_hasmore(&line)) {
        err = at_tok_nextstr(&line, &tmp_str); // lac
        if (err < 0)
        {
            goto exit;
        }
        reg->lac = strtol(tmp_str, NULL, 16);

        err = at_tok_nextstr(&line, &tmp_str); // ci
        if (err < 0)
        {
            goto exit;
        }
        reg->ci = strtol(tmp_str, NULL, 16);

        err = at_tok_nextint(&line, &tmp_int);// AcT
        if (err < 0)
        {
            goto exit;
        }
        reg->type = (uint8)tmp_int;
    }
    at_response_free(response);

    err = at_send_command_multiline("AT+CEREG?", "+CEREG:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

    line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int); // n
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);// stat
    if (err < 0)
    {
        goto exit;
    }
    reg->data_state = (uint8)tmp_int;

    if(reg->lac == 0 && at_tok_hasmore(&line)) {
        err = at_tok_nextstr(&line, &tmp_str); // lac
        if (err < 0)
        {
            goto exit;
        }
        reg->lac = strtol(tmp_str, NULL, 16);

        err = at_tok_nextstr(&line, &tmp_str); // ci
        if (err < 0)
        {
            goto exit;
        }
        reg->ci = strtol(tmp_str, NULL, 16);

        err = at_tok_nextint(&line, &tmp_int);// AcT
        if (err < 0)
        {
            goto exit;
        }
        reg->type = (uint8)tmp_int;
    }
    at_response_free(response);

    err = at_send_command_multiline("AT+CIREG?", "+CIREG:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        reg->ims_state = (uint8)0;
        err = 0;
        goto exit;
    }
    line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int); // n/stat
    if (err < 0)
    {
        goto exit;
    }
    if(at_tok_hasmore(&line)) {
        err = at_tok_nextint(&line, &tmp_int);// stat
        if (err < 0)
        {
            goto exit;
        }
        reg->ims_state = (uint8)tmp_int;
    } else {
        reg->ims_state = (uint8)tmp_int;
    }

exit:
    at_response_free(response);
    return err;
}

/*
AT+EEMOPT=1
OK

// LTE
AT+EEMGINFO?
// <mcc>, <length of mnc>, <mnc>, <tac>, <PCI>, <dlEuarfcn>, < ulEuarfcn >, <band>, <dlBandwidth>,
// <rsrp>,<rsrq>, <sinr>,
// errcModeState,emmState,serviceState,IsSingleEmmRejectCause,EMMRejectCause,mmeGroupId,mmeCode,mTmsi,
// cellId,subFrameAssignType,specialSubframePatterns,transMode
// mainRsrp,diversityRsrp,mainRsrq,diversityRsrq,rssi,cqi,pathLoss,tb0DlTpt,tb1DlTpt,tb0DlPeakTpt,tb1DlPeakTpt,tb0UlPeakTpt,
// tb1UlPeakTpt,dlThroughPut,dlPeakThroughPut,averDlPRB,averCQITb0,averCQITb1,rankIndex,grantTotal,ulThroughPut,ulPeakThroughPut,currPuschTxPower,averUlPRB,
// dlBer, ulBer,
// diversitySinr, diversityRssi
+EEMLTESVC: 1120, 2, 0, 33584, 430, 40936, 40936, 41, 20,
0, 0, 0,
1, 10, 0, 1, 0, 1059, 78, 3959566565,
105149248, 2, 7, 7,
0, 0, 0, 0, 0, 0, 0, 1190919, 0, 0, 0, 16779777,
0, 5112867, 3959566565, 2, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0,
7, 44

// index,phyCellId,euArfcn,rsrp,rsrq
+EEMLTEINTER: 0, 65535, 38950, 0, 0

+EEMLTEINTER: 1, 0, 0, 0, 0

+EEMLTEINTER: 2, 0, 4294967295, 255, 255

+EEMLTEINTER: 3, 65535, 1300, 0, 0

+EEMLTEINTER: 4, 0, 0, 0, 0

+EEMLTEINTER: 5, 0, 4294967295, 247, 0

+EEMLTEINTER: 6, 197, 41332, 24, 9

+EEMLTEINTER: 7, 0, 0, 0, 0

+EEMLTEINTER: 8, 0, 0, 0, 0

+EEMLTEINTRA: 0, 429, 40936, 56, 12

+EEMLTEINTERRAT: 0,0

+EEMLTEINTERRAT: 1,0

+EEMGINFO: 3, 2         // <state>:
                        // 0: ME in Idle mode
                        // 1: ME in Dedicated mode
                        // 2: ME in PS PTM mode
                        // 3: invalid state
                        // <nw_type>:
                        // 0: GSM 1: UMTS 2: LTE

OK

// WCDMA
AT+EEMGINFO?
// Mode, sCMeasPresent, sCParamPresent, ueOpStatusPresent,

// if sCMeasPresent == 1
// cpichRSCP, utraRssi, cpichEcN0, sQual, sRxLev, txPower,
// endif

// if sCParamPresent == 1
// rac, nom, mcc, mnc_len, mnc, lac, ci,
// uraId, psc, arfcn, t3212, t3312, hcsUsed, attDetAllowed,
// csDrxCycleLen, psDrxCycleLen, utranDrxCycleLen, HSDPASupport, HSUPASupport,
// endif

// if ueOpStatusPresent == 1
// rrcState, numLinks, srncId, sRnti,
// algPresent, cipherAlg, cipherOn, algPresent, cipherAlg, cipherOn,
// HSDPAActive, HSUPAActive, MccLastRegisteredNetwork, MncLastRegisteredNetwork, TMSI, PTMSI, IsSingleMmRejectCause, IsSingleGmmRejectCause,
// MMRejectCause, GMMRejectCause, mmState, gmmState, gprsReadyState, readyTimerValueInSecs, NumActivePDPContext, ULThroughput, DLThroughput,
// serviceStatus, pmmState, LAU_status, LAU_count, RAU_status, RAU_count
// endif
//
+EEMUMTSSVC: 3, 1, 1, 1,
-80, 27, -6, -18, -115, -32768,
1, 1, 1120, 2, 1, 61697, 168432821,
15, 24, 10763, 0, 0, 0, 0,
128, 128, 65535, 0, 0,
2, 255, 65535, 4294967295,
0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1,
28672, 28672, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0

// index, cpichRSCP, utraRssi, cpichEcN0, sQual, sRxLev ,mcc, mnc, lac, ci, arfcn, psc
+EEMUMTSINTRA: 0, -32768, -1, -32768, -18, -115, 0, 0, 65534, 1, 10763, 32

+EEMUMTSINTRA: 1, -1, -32768, -18, -115, 0, 0, 65534, 2, 10763, 40, 32768

+EEMUMTSINTRA: 2, -32768, -18, -115, 0, 0, 65534, 3, 10763, 278, 32768, 65535

+EEMUMTSINTRA: 3, -18, -115, 0, 0, -2, 4, 10763, 28, 32768, 65535, 32768

+EEMUMTSINTRA: 4, -115, 0, 0, -2, 5, 10763, 270, 32768, 65535, 32768, 65518

+EEMUMTSINTRA: 5, 0, 0, -2, 6, 10763, 286, 32768, 65535, 32768, 65518, 65421

+EEMUMTSINTRA: 6, 0, -2, 7, 10763, 80, 32768, 65535, 32768, 65518, 65421, 0

+EEMUMTSINTRA: 7, -2, 8, 10763, 206, -32768, 65535, 32768, 65518, 65421, 0, 0

+EEMUMTSINTRA: 8, 9, 10763, 11, -32768, -1, 32768, 65518, 65421, 0, 0, 65534

+EEMUMTSINTRA: 9, 10763, 19, -32768, -1, -32768, 65518, 65421, 0, 0, 65534, 11

+EEMUMTSINTRA: 10, 232, -32768, -1, -32768, -18, 65421, 0, 0, 65534, 12, 10763

+EEMUMTSINTRA: 11, -32768, -1, -32768, -18, -115, 0, 0, 65534, 13, 10763, 66

+EEMUMTSINTRA: 12, -1, -32768, -18, -115, 0, 0, 65534, 14, 10763, 216, 32768

+EEMUMTSINTRA: 13, -32768, -18, -115, 0, 0, 65534, 15, 10763, 183, 32768, 65535

+EEMUMTSINTRA: 14, -18, -115, 0, 0, -2, 16, 10763, 165, 32768, 65535, 32768

+EEMUMTSINTRA: 15, -115, 0, 0, -2, 17, 10763, 151, 32768, 65535, 32768, 65518

+EEMUMTSINTRA: 16, 0, 0, -2, 18, 10763, 43, 32768, 65535, 32768, 65518, 65421

+EEMUMTSINTRA: 17, 0, -2, 19, 10763, 72, 32768, 65535, 32768, 65518, 65421, 0

+EEMUMTSINTRA: 18, -2, 20, 10763, 157, -32768, 65535, 32768, 65518, 65421, 0, 0

+EEMUMTSINTRA: 19, 21, 10763, 165, -32768, -1, 32768, 65518, 65421, 0, 0, 65534

+EEMUMTSINTRA: 20, 10763, 301, -32768, -1, -32768, 65518, 65421, 0, 0, 65534, 23

+EEMUMTSINTRA: 21, 23, -32768, -1, -32768, -18, 65421, 0, 0, 65534, 24, 10763

+EEMUMTSINTRA: 22, -32768, -1, -32768, -18, -115, 0, 0, 65534, 25, 10763, 0

+EEMUMTSINTRA: 23, -1, -32768, -18, -115, 0, 0, 65534, 26, 10763, 167, 32768

+EEMUMTSINTRA: 24, -32768, -18, -115, 0, 0, 65534, 27, 10763, 34, 32768, 65535

+EEMUMTSINTRA: 25, -18, -115, 0, 0, -2, 28, 10763, 313, 32768, 65535, 32768

+EEMUMTSINTRA: 26, -115, 0, 0, -2, 29, 10763, 152, 32768, 65535, 32768, 65518

+EEMUMTSINTRA: 27, 0, 0, -2, 30, 10763, 239, 0, 0, 0, 0, 0

+EEMUMTSINTRA: 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

+EEMUMTSINTRA: 29, 0, 0, 0, 0, -115, 0, 0, 65534, 30, 10763, 239

// index,gsmRssi,rxLev,C1,C2,mcc,mnc,lac,ci,arfcn,bsic
+EEMUMTSINTERRAT: 0, -32768, -107, -1, -1, 0, 0, 65534, 0, 117, 36

+EEMUMTSINTERRAT: 1, -107, -1, -1, 0, 0, 65534, 1, 72, 49, 0

+EEMUMTSINTERRAT: 2, -1, -1, 0, 0, 65534, 2, 119, 15, 32768, 149

+EEMUMTSINTERRAT: 3, -1, 0, 0, -2, 3, 121, 23, 0, 0, 0

+EEMGINFO: 3, 1

OK


// GSM
AT+EEMGINFO?
+EEMGINFOBASIC: 2

// mcc, mnc_len, mnc, lac, ci, nom, nco,
// bsic, C1, C2, TA, TxPwr,
// RxSig, RxSigFull, RxSigSub, RxQualFull, RxQualSub,
// ARFCB_tch, hopping_chnl, chnl_type, TS, PacketIdle, rac, arfcn,
// bs_pa_mfrms, C31, C32, t3212, t3312, pbcch_support, EDGE_support,
// ncc_permitted, rl_timeout, ho_count, ho_succ, chnl_access_count, chnl_access_succ_count,
// gsmBand,channelMode
+EEMGINFOSVC: 1120, 2, 0, 32784, 24741, 2, 0,
63, 36, 146, 1, 7,
46, 42, 42, 7, 0,
53, 0, 8, 0, 1, 6, 53,
2, 0, 146, 42, 54, 0, 1,
1, 32, 0, 0, 0, 0,
0, 0

// PS_attached, attach_type, service_type, tx_power, c_value,
// ul_ts, dl_ts, ul_cs, dl_cs, ul_modulation, dl_modulation,
// gmsk_cv_bep, 8psk_cv_bep, gmsk_mean_bep, 8psk_mean_bep, EDGE_bep_period, single_gmm_rej_cause
// pdp_active_num, mac_mode, network_control, network_mode, EDGE_slq_measurement_mode, edge_status
+EEMGINFOPS: 1, 255, 0, 0, 0,
0, 0, 268435501, 1, 0, 0,
4, 0, 96, 0, 0, 0,
0, 0, 0, 65535, 0, 13350

+EEMGINFO: 0, 0

OK

*/
static int req_cell_info_get(int *cme_err)
{
    ATResponse *response = NULL;
    int tmp_int;
    int buff_size = 0;
    // AT+EEMOPT=1 in the first.
    int err = at_send_command("AT+EEMOPT=1", &response);
    if (err < 0 || response->success == 0){
        *cme_err = at_get_cme_error(response);
        goto exit;
    }

    // Reset buffer in the first.
    memset(&cell_info, 0xFF, sizeof(mbtK_cell_pack_info_t));
    cell_info.running = true;
    cell_info.cell_list.num = 0;

    err = at_send_command_singleline("AT+EEMGINFO?", "+EEMGINFO:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        *cme_err = at_get_cme_error(response);
        goto exit;
    }

    // Now, cell infomation has get from URC message.

    char *line = response->p_intermediates->line;
    err = at_tok_start(&line);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }
    err = at_tok_nextint(&line, &tmp_int);
    if (err < 0)
    {
        goto exit;
    }

    cell_info.cell_list.type = (uint8)tmp_int;
    cell_info.running = false;

#if 0
    while(lines_ptr)
    {
        // LTE
        if(strStartsWith(line, "+EEMLTESVC:")) // LTE Server Cell
        {

        }
        else if(strStartsWith(line, "+EEMLTEINTER:")) // LTE
        {

        }
        else if(strStartsWith(line, "+EEMLTEINTRA:")) // LTE
        {

        }
        else if(strStartsWith(line, "+EEMLTEINTERRAT:")) // LTE
        {

        }
        else if(strStartsWith(line, "+EEMGINFO:")) // <state>: 0: ME in Idle mode 1: ME in Dedicated mode 2: ME in PS PTM mode 3: invalid state
                                                   // <nw_type>: 0: GSM 1: UMTS 2: LTE
        {

        }
        // WCDMA
        else if(strStartsWith(line, "+EEMUMTSSVC:")) // WCDMA Server Cell
        {

        }
        else if(strStartsWith(line, "+EEMUMTSINTRA:")) // WCDMA
        {

        }
        else if(strStartsWith(line, "+EEMUMTSINTERRAT:")) // WCDMA
        {

        }
        // GSM
        else if(strStartsWith(line, "+EEMGINFOBASIC:")) // Basic information in GSM
        // 0: ME in Idle mode   1: ME in Dedicated mode   2: ME in PS PTM mode
        {

        }
        else if(strStartsWith(line, "+EEMGINFOSVC:")) // GSM Server Cell
        {

        }
        else if(strStartsWith(line, "+EEMGINFOPS:")) // PS
        {

        }


        lines_ptr = lines_ptr->p_next;
    }
#endif

exit:
    at_response_free(response);
    return buff_size;
}

static int req_cell_info_set(const char *cmgl, char *reg, int len, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[30] = {0};
	char data[218] = {0};
    int err = 0;

	memcpy(data, cmgl, len);

	sprintf(cmd, "AT*CELL=%s", data);

	if(strlen(cmd) > 0)
	{
        err = at_send_command_multiline(cmd, "", &response);
		if (err < 0 || response->success == 0 || !response->p_intermediates){
			*cme_err = at_get_cme_error(response);
			goto exit;
		}

        ATLine* lines_ptr = response->p_intermediates;
        char *line = NULL;
        int reg_len = 0;
		bool flag = false;
        while(lines_ptr)
        {
            line = lines_ptr->line;
            if(line ==NULL)
            {
                LOGD("line is null----------------------");
            }
            lines_ptr = lines_ptr->p_next;
        }
	}
    err = 0;
	memcpy(reg, "req_cell_info_set succss", strlen("req_cell_info_set succss"));
exit:
    at_response_free(response);
    return err;
}


/*
AT+CGDCONT?

+CGDCONT: 1,"IPV4V6","ctnet","10.142.64.116 254.128.0.0.0.0.0.0.0.0.0.0.0.0.0.1",0,0,0,2,0,0

+CGDCONT: 8,"IPV4V6","IMS","254.128.0.0.0.0.0.0.0.0.0.0.0.0.0.1",0,0,0,2,1,1

OK

*/
static int req_apn_get(bool get_def_cid, mbtk_apn_info_array_t *apns, int *cme_err)
{
    ATResponse *response = NULL;
    int err = at_send_command_multiline("AT+CGDCONT?", "+CGDCONT:", &response);

    if (err < 0 || response->success == 0 || !response->p_intermediates){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

    ATLine* lines_ptr = response->p_intermediates;
    char *line = NULL;
    int tmp_int;
    char *tmp_str = NULL;
    int cid_start;
    if(apn_conf_support(MBTK_RIL_CID_DEF)) {
        cid_start = MBTK_RIL_CID_DEF;
    } else {
        if(get_def_cid) {
            cid_start = MBTK_RIL_CID_DEF;
        } else {
            cid_start = MBTK_RIL_CID_2;
        }
    }
    /*
    <apn_num[1]><cid[1]><ip_type[1]><apn_len[2]><apn><user_len[2]><user><pass_len[2]><pass><auth_len[2]><auth>...
                <cid[1]><ip_type[1]><apn_len[2]><apn><user_len[2]><user><pass_len[2]><pass><auth_len[2]><auth>
    */
    while(lines_ptr)
    {
        line = lines_ptr->line;
        err = at_tok_start(&line);
        if (err < 0)
        {
            goto exit;
        }

        err = at_tok_nextint(&line, &tmp_int); // cid
        if (err < 0)
        {
            goto exit;
        }
        // Only get CID 1-7
        if(tmp_int >= cid_start && tmp_int <= MBTK_APN_CID_MAX) {
            apns->apns[apns->num].cid = (mbtk_ril_cid_enum)tmp_int;

            err = at_tok_nextstr(&line, &tmp_str);// ip type
            if (err < 0)
            {
                goto exit;
            }
            if(!strcasecmp(tmp_str, "IP")) {
                apns->apns[apns->num].ip_type = MBTK_IP_TYPE_IP;
            } else if(!strcasecmp(tmp_str, "IPV6")) {
                apns->apns[apns->num].ip_type = MBTK_IP_TYPE_IPV6;
            } else if(!strcasecmp(tmp_str, "IPV4V6")) {
                apns->apns[apns->num].ip_type = MBTK_IP_TYPE_IPV4V6;
            } else {
                apns->apns[apns->num].ip_type = MBTK_IP_TYPE_PPP;
            }

            err = at_tok_nextstr(&line, &tmp_str); // apn
            if (err < 0)
            {
                goto exit;
            }
            if(!str_empty(tmp_str)) {
                memcpy(apns->apns[apns->num].apn, tmp_str, strlen(tmp_str));
            }

            apns->num++;
        }

        lines_ptr = lines_ptr->p_next;
    }

    goto exit;
exit:
    at_response_free(response);
    return err;
}

/*
AT+CGDCONT=1,"IPV4V6","cmnet"
OK

AT*AUTHReq=1,1,marvell,123456
OK

*/
static int req_apn_set(mbtk_apn_info_t *apn, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[400] = {0};
    int index = 0;
    int err = 0;

    // Delete apn
    if(str_empty(apn->apn)) {
        sprintf(cmd, "AT+CGDCONT=%d", apn->cid);
        err = at_send_command(cmd, &response);
        if (err < 0 || response->success == 0){
            if(cme_err) {
                *cme_err = at_get_cme_error(response);
            }
            goto exit;
        }
    } else {
        index += sprintf(cmd, "AT+CGDCONT=%d,", apn->cid);
        switch(apn->ip_type) {
            case MBTK_IP_TYPE_IP: {
                index += sprintf(cmd + index,"\"IP\",");
                break;
            }
            case MBTK_IP_TYPE_IPV6: {
                index += sprintf(cmd + index,"\"IPV6\",");
                break;
            }
            case MBTK_IP_TYPE_IPV4V6: {
                index += sprintf(cmd + index,"\"IPV4V6\",");
                break;
            }
            default: {
                index += sprintf(cmd + index,"\"PPP\",");
                break;
            }
        }
        if(strlen(apn->apn) > 0) {
            index += sprintf(cmd + index,"\"%s\"", apn->apn);
        }

        err = at_send_command(cmd, &response);
        if (err < 0 || response->success == 0){
            if(cme_err) {
                *cme_err = at_get_cme_error(response);
            }
            goto exit;
        }

        if(!str_empty(apn->user) || !str_empty(apn->pass)) {
            at_response_free(response);

            memset(cmd,0,400);
            int cmd_auth=0;
            if(apn->auth == MBTK_APN_AUTH_PROTO_NONE)
                cmd_auth = 0;
            else if(apn->auth == MBTK_APN_AUTH_PROTO_PAP)
                cmd_auth = 1;
            else if(apn->auth == MBTK_APN_AUTH_PROTO_CHAP)
                cmd_auth = 2;
            else
                goto exit;

            sprintf(cmd, "AT*AUTHREQ=%d,%d,%s,%s",apn->cid,cmd_auth,apn->user,apn->pass);
            err = at_send_command(cmd, &response);
            if (err < 0 || response->success == 0){
                if(cme_err) {
                    *cme_err = at_get_cme_error(response);
                }
                goto exit;
            }
        }
    }

exit:
    at_response_free(response);
    return err;
}

/*
AT+CGACT?
+CGACT: 1,1
+CGACT: 8,1
OK

AT+CGACT=1,<cid>
OK

*/
static int req_data_call_start(mbtk_ril_cid_enum cid, bool def_route, bool as_dns,
                int retry_interval, int timeout, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[400] = {0};
    int err = 0;
    memset(&cgact_wait, 0, sizeof(ril_cgact_wait_t));
    cgact_wait.waitting = true;
    cgact_wait.cid = cid;
    cgact_wait.act = true;

    sprintf(cmd, "AT+CGACT=1,%d", cid);
    err = at_send_command(cmd, &response);
    if (err < 0 || response->success == 0){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

exit:
    at_response_free(response);
    return err;
}

/*
AT+CGACT=0,<cid>
OK

*/
static int req_data_call_stop(mbtk_ril_cid_enum cid, int timeout, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[400] = {0};
    int err = 0;

    memset(&cgact_wait, 0, sizeof(ril_cgact_wait_t));
    cgact_wait.waitting = true;
    cgact_wait.cid = cid;
    cgact_wait.act = false;

    sprintf(cmd, "AT+CGACT=0,%d", cid);
    err = at_send_command(cmd, &response);
    if (err < 0 || response->success == 0){
        if(cme_err) {
            *cme_err = at_get_cme_error(response);
        }
        goto exit;
    }

exit:
    at_response_free(response);
    return err;
}

/*
AT+CGCONTRDP=1
+CGCONTRDP: 1,7,"cmnet-2.MNC000.MCC460.GPRS","10.255.74.26","","223.87.253.100","223.87.253.253","","",0,0
+CGCONTRDP: 1,7,"cmnet-2.MNC000.MCC460.GPRS","254.128.0.0.0.0.0.0.0.1.0.2.144.5.212.239","","36.9.128.98.32.0.0.2.0.0.0.0.0.0.0.1","36.9.128.98.32.0.0.2.0.0.0.0.0.0.0.2","","",0,0

OK

*/
static int req_data_call_state_get(mbtk_ril_cid_enum cid, mbtk_ip_info_t *ip_info, int *cme_err)
{
    ATResponse *response = NULL;
    char cmd[50] = {0};
    int err = 0;

    sprintf(cmd, "AT+CGCONTRDP=%d", cid);

    err = at_send_command_multiline(cmd, "+CGCONTRDP:", &response);
    if (err < 0 || response->success == 0 || !response->p_intermediates){
        *cme_err = at_get_cme_error(response);
        goto exit;
    }
    ATLine* lines_ptr = response->p_intermediates;
    char *line = NULL;
    int tmp_int;
    char *tmp_ptr = NULL;
    while(lines_ptr)
    {
        line = lines_ptr->line;
        err = at_tok_start(&line);
        if (err < 0)
        {
            goto exit;
        }

        err = at_tok_nextint(&line, &tmp_int); // cid
        if (err < 0)
        {
            goto exit;
        }
        err = at_tok_nextint(&line, &tmp_int); // bearer_id
        if (err < 0)
        {
            goto exit;
        }
        err = at_tok_nextstr(&line, &tmp_ptr); // APN
        if (err < 0)
        {
            goto exit;
        }

        err = at_tok_nextstr(&line, &tmp_ptr); // IP
        if (err < 0 || str_empty(tmp_ptr))
        {
            goto exit;
        }
        if(is_ipv4(tmp_ptr)) {
            if(inet_pton(AF_INET, tmp_ptr, &(ip_info->ipv4.IPAddr)) < 0) {
                LOGE("inet_pton() fail.");
                err = -1;
                goto exit;
            }

            ip_info->ipv4.valid = true;
            //log_hex("IPv4", &(ipv4->IPAddr), sizeof(struct in_addr));
        } else {
            if(str_2_ipv6(tmp_ptr, &(ip_info->ipv6.IPV6Addr))) {
                LOGE("str_2_ipv6() fail.");
                err = -1;
                goto exit;
            }

            ip_info->ipv6.valid = true;
            //log_hex("IPv6", &(ipv6->IPV6Addr), 16);
        }

        err = at_tok_nextstr(&line, &tmp_ptr); // Gateway
        if (err < 0)
        {
            goto exit;
        }
        if(!str_empty(tmp_ptr)) { // No found gateway
            if(is_ipv4(tmp_ptr)) {
                if(inet_pton(AF_INET, tmp_ptr, &(ip_info->ipv4.GateWay)) < 0) {
                    LOGE("inet_pton() fail.");
                    err = -1;
                    goto exit;
                }

                //log_hex("IPv4", &(ipv4->GateWay), sizeof(struct in_addr));
            } else {
                if(str_2_ipv6(tmp_ptr, &(ip_info->ipv6.GateWay))) {
                    LOGE("str_2_ipv6() fail.");
                    err = -1;
                    goto exit;
                }

                //log_hex("IPv6", &(ipv6->GateWay), 16);
            }
        }

        err = at_tok_nextstr(&line, &tmp_ptr); // prim_DNS
        if (err < 0)
        {
            goto exit;
        }
        if(!str_empty(tmp_ptr)) { // No found Primary DNS
            if(is_ipv4(tmp_ptr)) {
                if(inet_pton(AF_INET, tmp_ptr, &(ip_info->ipv4.PrimaryDNS)) < 0) {
                    LOGE("inet_pton() fail.");
                    err = -1;
                    goto exit;
                }

                //log_hex("IPv4", &(ipv4->PrimaryDNS), sizeof(struct in_addr));
            } else {
                if(str_2_ipv6(tmp_ptr, &(ip_info->ipv6.PrimaryDNS))) {
                    LOGE("str_2_ipv6() fail.");
                    err = -1;
                    goto exit;
                }

                //log_hex("IPv6", &(ipv6->PrimaryDNS), 16);
            }
        }

        err = at_tok_nextstr(&line, &tmp_ptr); // sec_DNS
        if (err < 0)
        {
            goto exit;
        }
        if(!str_empty(tmp_ptr)) { // No found Secondary DNS
            if(is_ipv4(tmp_ptr)) {
                if(inet_pton(AF_INET, tmp_ptr, &(ip_info->ipv4.SecondaryDNS)) < 0) {
                    LOGE("inet_pton() fail.");
                    err = -1;
                    goto exit;
                }

                //log_hex("IPv4", &(ipv4->SecondaryDNS), sizeof(struct in_addr));
            } else {
                if(str_2_ipv6(tmp_ptr, &(ip_info->ipv6.SecondaryDNS))) {
                    LOGE("str_2_ipv6() fail.");
                    err = -1;
                    goto exit;
                }

                //log_hex("IPv6", &(ipv6->SecondaryDNS), 16);
            }
        }

        lines_ptr = lines_ptr->p_next;
    }

exit:
    at_response_free(response);
    return err;
}


//void net_list_free(void *data);
// Return MBTK_INFO_ERR_SUCCESS,will call pack_error_send() to send RSP.
// Otherwise, do not call pack_error_send().
mbtk_ril_err_enum net_pack_req_process(sock_cli_info_t* cli_info, ril_msg_pack_info_t* pack)
{
    mbtk_ril_err_enum err = MBTK_RIL_ERR_SUCCESS;
    int cme_err = MBTK_RIL_ERR_CME_NON;
    switch(pack->msg_id)
    {
        case RIL_MSG_ID_NET_AVAILABLE:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                mbtk_net_info_array_t net_array;
                memset(&net_array, 0, sizeof(mbtk_net_info_array_t));
                if(req_available_net_get(&net_array, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOGD("Get Available Net fail.");
                }
                else
                {
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &net_array, sizeof(mbtk_net_info_array_t));
                }
            }
            else     // Set
            {
                err = MBTK_RIL_ERR_UNSUPPORTED;
                LOGW("Unsupport set available net.");
            }
            break;
        }
        case RIL_MSG_ID_NET_SEL_MODE:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                mbtk_net_info_t info;
                memset(&info, 0, sizeof(mbtk_net_info_t));
                if(req_net_sel_mode_get(&info, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOGD("Get Net sel mode fail.");
                }
                else
                {
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &info, sizeof(mbtk_net_info_t));
                }
            }
            else     // Set
            {
                mbtk_net_info_t *info = (mbtk_net_info_t*)pack->data;
                if(req_net_sel_mode_set(info, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOGD("Set Net sel mode fail.");
                }
                else
                {
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, NULL, 0);
                }
            }
            break;
        }
        case RIL_MSG_ID_NET_BAND:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                err = MBTK_RIL_ERR_REQ_PARAMETER;
                LOG("No data found.");
            }
            else     // Set
            {
                if(pack->data_len == sizeof(uint8)) {
                    if(*(pack->data)) { // Get current bands.
                        mbtk_band_info_t band;
                        memset(&band, 0x0, sizeof(mbtk_band_info_t));
                        if(req_band_get(&band, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                        {
                            if(cme_err != MBTK_RIL_ERR_CME_NON) {
                                err = MBTK_RIL_ERR_CME + cme_err;
                            } else {
                                err = MBTK_RIL_ERR_UNKNOWN;
                            }
                            LOG("Get net band fail.");
                        }
                        else
                        {
                            ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &band, sizeof(mbtk_band_info_t));
                        }
                    } else { // Get support bands.
                        ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &band_info.band_support , sizeof(mbtk_band_info_t));
                    }
                } else { // Set current bands.
                    mbtk_band_info_t* band = (mbtk_band_info_t*)pack->data;
                    if(pack->data_len != sizeof(mbtk_band_info_t))
                    {
                        err = MBTK_RIL_ERR_REQ_PARAMETER;
                        LOG("Set net band error.");
                        break;
                    }

                    if(req_band_set(band, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                    {
                        if(cme_err != MBTK_RIL_ERR_CME_NON) {
                            err = MBTK_RIL_ERR_CME + cme_err;
                        } else {
                            err = MBTK_RIL_ERR_UNKNOWN;
                        }
                        LOG("Set net band fail.");
                    }
                    else
                    {
                        ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, NULL, 0);
                    }
                }
            }
            break;
        }
        case RIL_MSG_ID_NET_SIGNAL:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                mbtk_signal_info_t signal;
                memset(&signal, 0, sizeof(mbtk_signal_info_t));
                if(req_net_signal_get(&signal, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOGD("Get net signal fail.");
                }
                else
                {
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &signal, sizeof(mbtk_signal_info_t));
                }
            }
            else     // Set
            {
                err = MBTK_RIL_ERR_UNSUPPORTED;
                LOGW("Unsupport set net signal.");
            }
            break;
        }
        case RIL_MSG_ID_NET_REG:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                mbtk_net_reg_info_t net_reg;
                memset(&net_reg, 0, sizeof(mbtk_net_reg_info_t));
                if(req_net_reg_get(&net_reg, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOGD("Get Net reg info fail.");
                }
                else
                {
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &net_reg, sizeof(mbtk_net_reg_info_t));
                }
            }
            else     // Set
            {
                err = MBTK_RIL_ERR_UNSUPPORTED;
                LOGW("Unsupport set net reg info.");
            }
            break;
        }
        case RIL_MSG_ID_NET_CELL:
        {
            if(pack->data_len == 0 || pack->data == NULL)   // Get net cell.
            {
                if(req_cell_info_get(&cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOG("Get net cell fail.");
                }
                else
                {
                    LOG("req_cell_info_get() success,cell number: %d", cell_info.cell_list.num);
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &cell_info.cell_list, sizeof(mbtk_cell_info_array_t));
                }
            }
            else     // Lock cell
            {
                char *mem = (char*)(pack->data);
                int len = pack->data_len;
                char reg[100] = {0};
                if(req_cell_info_set(mem, reg, len, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                }
                else
                {
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, reg, strlen(reg));
                }
            }
            break;
        }
        case RIL_MSG_ID_NET_APN:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                mbtk_apn_info_array_t apns;
                memset(&apns, 0, sizeof(mbtk_apn_info_array_t));
                if(req_apn_get(FALSE, &apns, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                {
                    if(cme_err != MBTK_RIL_ERR_CME_NON) {
                        err = MBTK_RIL_ERR_CME + cme_err;
                    } else {
                        err = MBTK_RIL_ERR_UNKNOWN;
                    }
                    LOGD("Get APN fail.");
                }
                else
                {
                    LOGD("size - %d", sizeof(mbtk_apn_info_array_t));
                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &apns, sizeof(mbtk_apn_info_array_t));
                }
            }
            else     // Set
            {
                mbtk_apn_info_t *apn = (mbtk_apn_info_t*)pack->data;
                if(apn_check_and_cid_reset(apn)) {
                    err = MBTK_RIL_ERR_CID;
                } else {
                    if(apn_conf_support(apn->cid)) {
                        if(req_apn_set(apn, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                        {
                            if(cme_err != MBTK_RIL_ERR_CME_NON) {
                                err = MBTK_RIL_ERR_CME + cme_err;
                            } else {
                                err = MBTK_RIL_ERR_UNKNOWN;
                            }
                            LOGD("Set APN fail.");
                        }
                        else
                        {
                            if(apn_prop_set(apn)) {
                                LOGE("Save APN fail.");
                            }
                            ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, NULL, 0);
                        }
                    } else {
                        err = MBTK_RIL_ERR_UNSUPPORTED;
                        LOGD("Can not set APN for CID : %d", apn->cid);
                    }
                }
            }
            break;
        }
        case RIL_MSG_ID_NET_DATA_CALL:
        {
            if(pack->data_len == 0 || pack->data == NULL)
            {
                err = MBTK_RIL_ERR_UNSUPPORTED;
            }
            else     // Set
            {
                mbtk_data_call_info_t *call_info = (mbtk_data_call_info_t*)pack->data;
                if(!apn_conf_support(call_info->cid)) {
                    err = MBTK_RIL_ERR_UNSUPPORTED;
                    LOGD("Can not data call for CID : %d", call_info->cid);
                } else {
                    if(call_info->type == MBTK_DATA_CALL_START) {
                        mbtk_ip_info_t ip_info;
                        memset(&ip_info, 0, sizeof(ip_info));
#if 0
                        if(apn_prop_reset(call_info)) {
                            err = MBTK_RIL_ERR_REQ_UNKNOWN;
                            LOG("apn_prop_reset() fail.");
                        } else
#else
                        if(apn_prop_reset(call_info)) {
                            LOG("apn_prop_reset() fail.");
                        }
#endif
                        {
                            if(req_data_call_start(call_info->cid, call_info->def_route, call_info->as_dns,
                                    call_info->retry_interval, call_info->timeout, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                            {
                                if(cme_err != MBTK_RIL_ERR_CME_NON) {
                                    err = MBTK_RIL_ERR_CME + cme_err;
                                } else {
                                    err = MBTK_RIL_ERR_UNKNOWN;
                                }
                                LOGD("Start data call fail.");
                            }
                            else
                            {
                                // Wait for "CONNECT" or "+CGEV:"
                                if(wait_cgact_complete(call_info->timeout)) { // Timeout
                                    err = MBTK_RIL_ERR_TIMEOUT;
                                    break;
                                }

                                // Get Ip informations.
                                cme_err = MBTK_RIL_ERR_CME_NON;
                                if(req_data_call_state_get(call_info->cid ,&ip_info, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                                {
                                    LOGD("Get net informations fail.");
                                    err = MBTK_RIL_ERR_NET_CONF;
                                }
                                else
                                {
                                    // Config network informations.
                                    if(net_ifc_reconfig(call_info->cid, call_info->def_route, call_info->as_dns, &ip_info)) {
                                        err = MBTK_RIL_ERR_NET_CONF;
                                        break;
                                    }

                                    ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &ip_info, sizeof(mbtk_ip_info_t));
                                }
                            }
                        }
                    } else if(call_info->type == MBTK_DATA_CALL_STOP) {
                        if(req_data_call_stop(call_info->cid, call_info->timeout, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                        {
                            if(cme_err != MBTK_RIL_ERR_CME_NON) {
                                err = MBTK_RIL_ERR_CME + cme_err;
                            } else {
                                err = MBTK_RIL_ERR_UNKNOWN;
                            }
                            LOGD("Stop data call fail.");
                        }
                        else
                        {
                            // Wait for "CONNECT" or "+CGEV:"
                            if(wait_cgact_complete(call_info->timeout)) { // Timeout
                                err = MBTK_RIL_ERR_TIMEOUT;
                                break;
                            }

                            // Clean network config.
                            if(net_ifc_config(call_info->cid, FALSE, FALSE, NULL)) {
                                err = MBTK_RIL_ERR_NET_CONF;
                                break;
                            }

                            ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, NULL, 0);
                        }
                    } else {
                        mbtk_ip_info_t ip_info;
                        memset(&ip_info, 0, sizeof(ip_info));
                        if(req_data_call_state_get(call_info->cid ,&ip_info, &cme_err) || cme_err != MBTK_RIL_ERR_CME_NON)
                        {
                            if(cme_err != MBTK_RIL_ERR_CME_NON) {
                                err = MBTK_RIL_ERR_CME + cme_err;
                            } else {
                                err = MBTK_RIL_ERR_UNKNOWN;
                            }
                            LOGD("Get data call state fail.");
                        }
                        else
                        {
                            ril_rsp_pack_send(cli_info->fd, pack->msg_id, pack->msg_index, &ip_info, sizeof(mbtk_ip_info_t));
                        }
                    }
                }
            }
            break;
        }
        default:
        {
            err = MBTK_RIL_ERR_REQ_UNKNOWN;
            LOG("Unknown request : %s", id2str(pack->msg_id));
            break;
        }
    }

    return err;
}