Add support for even/odd parity com ports

Set Parity=true in [com] section of sexpots.ini
Set ParityOdd=true if using Odd parity.

src/comio/comio.h

@@ -135,6 +135,7 @@ COMIOEXPORT size_t		comReadLine(COM_HANDLE, char* buf, size_t buflen
 							,int timeout /* in milliseconds */);
 COMIOEXPORT BOOL		comPurgeInput(COM_HANDLE);
 COMIOEXPORT BOOL		comPurgeOutput(COM_HANDLE);
+COMIOEXPORT BOOL		comSetParity(COM_HANDLE, BOOL enable, BOOL odd);
 
 #if defined(__cplusplus)
 }

src/comio/comio_nix.c

@@ -338,6 +338,28 @@ BOOL comSetFlowControl(COM_HANDLE handle, int modes)
     return TRUE;
 }
 
+BOOL comSetParity(COM_HANDLE handle, BOOL enable, BOOL odd)
+{
+    struct termios t;
+
+    if(tcgetattr(handle, &t)==-1)
+        return FALSE;
+
+    if (enable) {
+        t.c_cflag |= PARENB;
+		if (odd)
+			t.c_cflag |= PARODD;
+		else
+			t.c_cflag &= ~PARODD;
+	} else
+        t.c_cflag &= ~(PARENB | PARODD);
+
+    if(tcsetattr(handle, TCSANOW, &t)==-1)
+        return FALSE;
+
+    return TRUE;
+}
+
 int comGetModemStatus(COM_HANDLE handle)
 {
     int status;

src/comio/comio_win32.c

@@ -79,6 +79,7 @@ COM_HANDLE comOpen(const char* device)
 		dcb.ByteSize	= 8;
 		dcb.Parity		= NOPARITY;
 		dcb.StopBits	= ONESTOPBIT;
+		dcb.fParity		= FALSE;
 		SetCommState(handle, &dcb);
 	}
 
@@ -157,6 +158,18 @@ BOOL comSetFlowControl(COM_HANDLE handle, int type)
 	return SetCommState(handle, &dcb);
 }
 
+BOOL comSetParity(COM_HANDLE handle, BOOL enable, BOOL odd)
+{
+	DCB dcb;
+
+	if(GetCommState(handle, &dcb) != TRUE)
+		return FALSE;
+
+	dcb.fParity = enable;
+	dcb.Parity = enable ? (odd ? ODDPARITY : EVENPARITY) : NOPARITY;
+	return SetCommState(handle, &dcb);
+}
+
 int comGetModemStatus(COM_HANDLE handle)
 {
 	DWORD status=0;

src/sexpots/sexpots.c

@@ -75,6 +75,8 @@ BOOL	com_handle_passed=FALSE;
 BOOL	com_alreadyconnected=FALSE;
 BOOL	com_hangup=TRUE;
 ulong	com_baudrate=0;
+BOOL	com_parity=FALSE;
+BOOL	com_parity_odd=FALSE;
 BOOL	dcd_ignore=FALSE;
 int		dcd_timeout=10;	/* seconds */
 ulong	dtr_delay=100;	/* milliseconds */
@@ -1414,6 +1416,8 @@ void parse_ini_file(const char* ini_fname)
 	section="COM";
 	iniGetExistingWord(ini, section, "Device", NULL, com_dev);
 	com_baudrate    = iniGetLongInt(ini, section, "BaudRate", com_baudrate);
+	com_parity		= iniGetBool(ini, section, "Parity", com_parity);
+	com_parity_odd	= iniGetBool(ini, section, "ParityOdd", com_parity_odd);
 	com_hangup	    = iniGetBool(ini, section, "Hangup", com_hangup);
 	hangup_attempts = iniGetInteger(ini, section, "HangupAttempts", hangup_attempts);
 	dcd_timeout     = iniGetInteger(ini, section, "DCDTimeout", dcd_timeout);
@@ -1571,6 +1575,9 @@ service_loop(int argc, char** argv)
 		if(!comSetBaudRate(com_handle,com_baudrate))
 			lprintf(LOG_ERR,"ERROR %u setting DTE rate to %lu bps"
 				,COM_ERROR_VALUE, com_baudrate);
+		if(!comSetParity(com_handle, com_parity, com_parity_odd))
+			lprintf(LOG_ERR,"ERROR %u setting parity type"
+				,COM_ERROR_VALUE);
 	}
 
 	lprintf(LOG_INFO,"COM Port DTE rate: %ld bps", comGetBaudRate(com_handle));
@@ -1622,6 +1629,7 @@ service_loop(int argc, char** argv)
 				}
 			} else
 				lprintf(LOG_NOTICE, "Timeout (%d seconds) waiting for response to prompt", prompt_timeout);
+			comSetParity(com_handle, com_parity, com_parity_odd);
 		}
 		if((sock=connect_socket(host, port)) == INVALID_SOCKET) {
 			comWriteString(com_handle,"\7\r\n!ERROR connecting to TCP port\r\n");