getch !

src/cli.c

@@ -25,6 +25,8 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <sys/socket.h>
+#include <unistd.h>
+#include <termios.h>
 
 #define SEND_BUFFER_SIZE 80
 #define RECEIVE_BUFFER_SIZE 80 * 24
@@ -32,6 +34,45 @@
 #define SERVER_IP_ADDR "127.0.0.1"
 #define SERVER_PORT 9000
 
+static char getch(void)
+{
+    char buf = 0;
+    // old terminal
+    struct termios old = {0};
+
+    // force flush stdout
+    fflush(stdout);
+
+    if(tcgetattr(0, &old) < 0) {
+        printLog("Error getting terminal settings!\n");
+        return -1;
+    }
+
+    old.c_lflag &= ~ICANON; // disable buffered I/O
+    old.c_lflag &= ~ECHO;   // set no echo mode
+    old.c_cc[VMIN] = 1;
+    old.c_cc[VTIME] = 0;
+
+    if(tcsetattr(0, TCSANOW, &old) < 0) {
+        printLog("Error setting terminal settings!\n");
+        return -1;
+    }
+
+    if(read(0, &buf, 1) < 0) {
+        printLog("Error reading character!\n");
+        return -1;
+    }
+
+    old.c_lflag |= ICANON; // enable buffered I/O
+    old.c_lflag |= ECHO;   // set echo mode
+
+    if(tcsetattr(0, TCSADRAIN, &old) < 0) {
+        printLog("Error resetting terminal settings!\n");
+        return -1;
+    }
+    return buf;
+ }
+
 void connectedCommunication(int sockfd)
 {
     char sendBuff[SEND_BUFFER_SIZE], receiveBuff[RECEIVE_BUFFER_SIZE], curChar;
@@ -46,7 +87,7 @@ void connectedCommunication(int sockfd)
         i = 0;
 
         // Read command from terminal
-        while (( curChar= getchar()) != '\n') {
+        while (( curChar= getch()) != '\n') {
             // XXX ARROWS
             sendBuff[i++] = curChar;
         }
@@ -71,10 +112,10 @@ void connectedCommunication(int sockfd)
 
         // Detect null-string returned
         if (receiveBuff[0] == 0) {
-            printLog("An error occured or invalid command!");
+            printLog("An error occured or invalid command!\n");
         }
 
-        printf("%s\n\n", receiveBuff);
+        printf("%s\n", receiveBuff);
     }
 }