int modem_close(void)
{
time_t start;
conn_api.terminate=1;
if((comGetModemStatus(com)&COM_DCD)==0) /* DCD already low */
goto CLOSEIT;
/* TODO: We need a drain function */
SLEEP(500);
if(!comLowerDTR(com))
goto CLOSEIT;
start=time(NULL);
while(time(NULL)-start <= 10) {
if((comGetModemStatus(com)&COM_DCD) == 0)
goto CLOSEIT;
SLEEP(1000);
}
CLOSEIT:
while(conn_api.input_thread_running || conn_api.output_thread_running)
SLEEP(1);
comClose(com);
destroy_conn_buf(&conn_inbuf);
destroy_conn_buf(&conn_outbuf);
FREE_AND_NULL(conn_api.rd_buf);
FREE_AND_NULL(conn_api.wr_buf);
return(0);
}
void modem_input_thread(void *args)
{
int rd;
int buffered;
size_t buffer;
BOOL monitor_dsr=TRUE;
SetThreadName("Modem Input");
conn_api.input_thread_running=1;
if(args != NULL) {
if((comGetModemStatus(com)&COM_DSR) == 0)
monitor_dsr=FALSE;
}
while(com != COM_HANDLE_INVALID && !conn_api.terminate) {
rd=comReadBuf(com, conn_api.rd_buf, conn_api.rd_buf_size, NULL, 100);
buffered=0;
while(buffered < rd) {
pthread_mutex_lock(&(conn_inbuf.mutex));
buffer=conn_buf_wait_free(&conn_inbuf, rd-buffered, 100);
buffered+=conn_buf_put(&conn_inbuf, conn_api.rd_buf+buffered, buffer);
pthread_mutex_unlock(&(conn_inbuf.mutex));
}
if(args==NULL) {
if((comGetModemStatus(com)&COM_DCD) == 0)
break;
}
else if(monitor_dsr) {
if((comGetModemStatus(com)&COM_DSR) == 0)
break;
}
}
if(args != NULL)
comLowerDTR(com);
conn_api.input_thread_running=0;
}
void modem_output_thread(void *args)
{
int wr;
int ret;
int sent;
BOOL monitor_dsr=TRUE;
SetThreadName("Modem Output");
conn_api.output_thread_running=1;
if(args != NULL) {
if((comGetModemStatus(com)&COM_DSR) == 0)
monitor_dsr=FALSE;
}
while(com != COM_HANDLE_INVALID && !conn_api.terminate) {
pthread_mutex_lock(&(conn_outbuf.mutex));
wr=conn_buf_wait_bytes(&conn_outbuf, 1, 100);
if(wr) {
wr=conn_buf_get(&conn_outbuf, conn_api.wr_buf, conn_api.wr_buf_size);
pthread_mutex_unlock(&(conn_outbuf.mutex));
sent=0;
while(sent < wr) {
ret=comWriteBuf(com, conn_api.wr_buf+sent, wr-sent);
sent+=ret;
if(ret==COM_ERROR)
break;
}
if(ret==COM_ERROR) {
}
}
else
pthread_mutex_unlock(&(conn_outbuf.mutex));
if(args==NULL) {
if((comGetModemStatus(com)&COM_DCD) == 0)
break;
}
else if(monitor_dsr) {
if((comGetModemStatus(com)&COM_DSR) == 0)
break;
}
}
conn_api.output_thread_running=0;
}
/* Returns 0 on error, Modem status bit-map value otherwise */
int modem_status(COM_HANDLE com_handle)
{
int mdm_status;
if((mdm_status=comGetModemStatus(com_handle)) == COM_ERROR) {
lprintf(LOG_ERR,"ERROR %u getting modem status"
,COM_ERROR_VALUE);
return 0;
}
return mdm_status;
}
