Hidepw

.gitignore

@@ -3,3 +3,4 @@
 *.out
 .DS_Store
 screenxtv.conf
+screenxtv-gcc-client

lib/conf.h

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <termios.h>
 #include "macros.h"
 
 
@@ -114,3 +115,24 @@ void Config::save(){
   #undef pushS
 }
 
+// Credit: http://www.gnu.org/software/libc/manual/html_node/getpass.html
+size_t my_getpass (char **lineptr, size_t *n, FILE *stream) {
+    struct termios old, new_t;
+    int nread;
+
+    /* Turn echoing off and fail if we can't. */
+    if (tcgetattr (fileno (stream), &old) != 0)
+     return -1;
+    new_t = old;
+    new_t.c_lflag &= ~ECHO;
+    if (tcsetattr (fileno (stream), TCSAFLUSH, &new_t) != 0)
+     return -1;
+
+    /* Read the password. */
+    nread = getline (lineptr, n, stream);
+
+    /* Restore terminal. */
+    (void) tcsetattr (fileno (stream), TCSAFLUSH, &old);
+
+    return nread;
+}

main.cc

@@ -75,13 +75,19 @@ void*loop_fdwrite(void*){
 bool auth(Config*config){
   char buf[1024];
   while(true){
-    char username[256],password[256];
+    char username[256];
     printf("user name> ");fflush(stdout);
     fgets(username,sizeof(username),stdin);
     char*usr=trim(username);
     if(strlen(usr)==0)return false;
+
+    /* Read password without echoing input. */
     printf("password> ");fflush(stdout);
-    fgets(password,sizeof(password),stdin);
+    char *password = (char *)malloc(256);
+    size_t n = 256;
+    my_getpass(&password, &n, stdin);
+    printf("\n\n");
+
     char*pswd=trim(password);
 
     char key[256],value[256];
@@ -95,6 +101,9 @@ bool auth(Config*config){
       config->put("auth_key",value+1);
       return true;
     }
+    else{
+        printf("Invalid credentials. Please try again.\n");
+    }
   }
 }