int openDataChannel(char* deviceNote, int isBlocking, RILChannelCtx* p_channel, int channelId)
{
RLOGI("openDataChannel");
if (p_channel->fd > 0)
closeDataChannel(p_channel);
memset(p_channel, 0, sizeof(RILChannelCtx));
p_channel->fd = -1; /* fd of the AT channel */
int retryCounter = 0;
int err = 0;
while (p_channel->fd < 0 && retryCounter < 5) {
do {
RLOGI("set property for usb permission");
p_channel->fd = open(deviceNote, isBlocking? O_RDWR : (O_RDWR | O_NONBLOCK));
} while (p_channel->fd < 0 && errno == EINTR);
if (p_channel->fd < 0) {
perror ("opening AT interface. retrying...");
RLOGE("could not connect to %s: %s", "/dev/ttyUSB0", strerror(errno));
/* reduce polling time for usb connected */
sleep(1);
/* never returns */
} else {
struct termios ios;
tcgetattr(p_channel->fd, &ios );
ios.c_lflag = 0; /* disable ECHO, ICANON, etc... */
ios.c_iflag = 0;
tcsetattr(p_channel->fd, TCSANOW, &ios );
}
++retryCounter;
}
if (p_channel->fd < 0) {
RLOGE("%s open failed", deviceNote);
return -1;
} else {
RLOGI("%s open success", deviceNote);
p_channel->ATBufferCur = p_channel->ATBuffer;
p_channel->myName = deviceNote;
p_channel->id = ++channelId;
p_channel->unsolHandler = 0;
p_channel->readerClosed = 0;
p_channel->responsePrefix = NULL;
p_channel->smsPDU = NULL;
p_channel->p_response = NULL;
}
return 0;
}
void requestDialUpCsd(void* data, size_t datalen, RIL_Token t)
{
const char *dialUpNumber, *slotId;
int request_parm_num = (datalen/sizeof(char*));
char* command;
int err = 0;
RIL_Data_Call_Response_v6* response = alloca(sizeof(RIL_Data_Call_Response_v6));
initialDataCallResponse(response, 1);
LOGD("requestCsdDialUp() with datalen=%d,parm_num=%d",datalen,request_parm_num);
dialUpNumber = ((const char**)data)[0];
slotId = ((const char **)data)[1];
err = openDataChannel("/dev/pttycsd", 1, &g_CsdDataChannel, g_CsdDataChannel.id);
if (err < 0) {
LOGE("requestCsdDialUp(): fail to open channel.");
goto error;
}
// Select CSD dial up SIM.
switch (slotId[0]) {
case '0':
command = "AT+ESUO=4";
break;
case '1':
command = "AT=ESUO=5";
break;
default:
command = "AT+ESUO=4";
break;
}
err = at_send_command_to_data_channel(command, NULL, &g_CsdDataChannel);
if (err < 0) {
LOGE("requestCsdDialUp(): fail to select dial up SIM.");
goto error;
}
// CSD dial up.
asprintf(&command, "ATD%s", dialUpNumber);
err = at_send_command_to_data_channel(command, NULL, &g_CsdDataChannel);
free(command);
if (err < 0) {
LOGE("requestCsdDialUp(): fail to dial up.");
goto error;
}
closeDataChannel(&g_CsdDataChannel);
// Start pppd
property_set("net.gprs.ppp-exit", "");
property_set("ctl.start", "pppd_csd");
int count = 0;
while (count < 10) {
if (isPPPRunning()) {
LOGD("pppd started [%d]", count);
break;
} else {
LOGD("Wait pppd started [%d]", count);
sleep(1);
}
++count;
}
int isPolling = 1;
char* exitCode = malloc(PROPERTY_VALUE_MAX);
char* runningCode = malloc(PROPERTY_VALUE_MAX);
count = 0;
int isPPPSucceed = 0;
while (isPolling && count < 300) {
memset(exitCode, 0, PROPERTY_VALUE_MAX);
memset(runningCode, 0, PROPERTY_VALUE_MAX);
property_get("net.gprs.ppp-running", runningCode, "");
property_get("net.gprs.ppp-exit", exitCode, "");
if (strcmp(exitCode, "") != 0) {
LOGD("pppd exited [%s] during starting", exitCode);
isPolling = 0;
} else if (strcmp(runningCode, "yes") == 0) {
//PPP Parameter
char local[PROPERTY_VALUE_MAX] = {0};
char remote[PROPERTY_VALUE_MAX] = {0};
char dns1[PROPERTY_VALUE_MAX] = {0};
char dns2[PROPERTY_VALUE_MAX] = {0};
LOGD("polling pppd done");
property_get("net.ppp0.local-ip", local, "0.0.0.0");
property_get("net.ppp0.remote-ip", remote, "0.0.0.0");
property_get("net.ppp0.dns1", dns1, "0.0.0.0");
property_get("net.ppp0.dns2", dns2, "0.0.0.0");
response->status = PDP_FAIL_NONE;
response->suggestedRetryTime = 0;
response->cid = 0;
response->active = 2;
asprintf(&response->type, "%s", "PPP");
asprintf(&response->ifname, "%s", "ppp0");
//address, local-ip
asprintf(&response->addresses, "%s", local);
//gateway, remote-ip
asprintf(&response->gateways, "%s", remote);
//dns
asprintf(&response->dnses, "%s %s", dns1, dns2);
LOGD("PPP Data call response: status=%d, suggestedRetryTime=%d, cid=%d, active=%d, \
type=%s, ifname=%s, addresses=%s, dnses=%s, gateways=%s",
response->status, response->suggestedRetryTime,
response->cid, response->active, response->type,
response->ifname, response->addresses,
response->dnses, response->gateways);
isPPPSucceed = 1;
isPolling = 0;
} else {
