parsing exit and reset <LPT pin> commands, rewrite client connection handler and return apropriate status from it

daemon/yasnd-sock.c

@@ -8,30 +8,68 @@
 #include <string.h>
 #include <pthread.h>
 
+#include <stdbool.h>
+
 #include "yasnd-log.h"
+#include "yasnd-lpt.h"
 
 const char sock_path[]="/var/run/yasnd.sock";
 pthread_t server_thread_handle; // server socket thread handle
 int socket_fd; // server socket descriptor
 
+#define STATUS_OK (void*)0
+#define STATUS_ERROR (void*)1
+
 void* connection_handler(void* param)
 {
 	// Get connection descriptor
 	int connection_fd=*(int*)param;
 
-	int nbytes;
+	// Buffer for client command and command's actual length
 	char buffer[256];
-	char tmpbuf[512];
+	int nbytes;
 
-	nbytes = read(connection_fd, buffer, 256);
+	// Token for string splitting
+	char* token;
+
+	// Status of command parsing (default is OK)
+	void* thread_status = STATUS_OK;
+
+	while ( (nbytes = read(connection_fd, buffer, 256)) != -1 )
+	{
 		buffer[nbytes] = 0;
 
-	sprintf(tmpbuf,"MESSAGE FROM CLIENT: %s\n", buffer);
-	log_event(tmpbuf);
+		token = strtok(buffer, " ");
+		if (token == NULL)
+		{
+			// empty input from client
+			thread_status = STATUS_ERROR;
+			break;
+		}
 
+		// Exit function
+		if (strncmp(token, "exit", 4) == 0)
+		{
+			// just break loop and thus close client connection
+			break;
+		}
+		// Reset function
+		if (strncmp(token, "reset", 5) == 0)
+		{
+			// Get parameter for reset call and convert it to long
+			long value = strtol(strtok(NULL, " "), (char **) NULL, 10);
+			// Call reset_pin function
+			reset_pin((int)value);
+			// continue waiting client commands
+			continue;
+		}
+	}
+
+	// Close client connection descriptor
 	close(connection_fd);
 
-	pthread_exit(0);
+	// Exit client thread and return apropriate status
+	pthread_exit(thread_status);
 }
 
 void* server_socket(void* param)