Move all sanity checks to a separate function xrdp_sanity_check()

xrdp/xrdp.c

@@ -293,65 +293,79 @@ xrdp_process_params(int argc, char **argv,
 }
 
 /*****************************************************************************/
-int DEFAULT_CC
-main(int argc, char **argv)
+/* Basic sanity checks before any forking */
+int
+xrdp_sanity_check(void)
 {
-    int test;
+    int intval = 1;
     int host_be;
-    char cfg_file[256];
-    enum logReturns error;
-    struct xrdp_startup_params *startup_params;
-    int pid;
-    int fd;
-    int no_daemon;
-    char text[256];
-    char pid_file[256];
-
-    g_init("xrdp");
-    ssl_init();
-
-    for (test = 0; test < argc; test++)
-    {
-        DEBUG(("Argument %i - %s", test, argv[test]));
-    }
 
     /* check compiled endian with actual endian */
-    test = 1;
-    host_be = !((int)(*(unsigned char *)(&test)));
+    host_be = !((int)(*(unsigned char *)(&intval)));
+
 #if defined(B_ENDIAN)
     if (!host_be)
+    {
+        g_writeln("Not a big endian machine, edit arch.h");
+        return 1;
+    }
 #endif
 #if defined(L_ENDIAN)
-        if (host_be)
+    if (host_be)
+    {
+        g_writeln("Not a little endian machine, edit arch.h");
+        return 1;
+    }
 #endif
-        {
-            g_writeln("endian wrong, edit arch.h");
-            return 0;
-        }
 
     /* check long, int and void* sizes */
     if (sizeof(int) != 4)
     {
         g_writeln("unusable int size, must be 4");
-        return 0;
+        return 1;
     }
 
     if (sizeof(long) != sizeof(void *))
     {
         g_writeln("long size must match void* size");
-        return 0;
+        return 1;
     }
 
     if (sizeof(long) != 4 && sizeof(long) != 8)
     {
         g_writeln("unusable long size, must be 4 or 8");
-        return 0;
+        return 1;
     }
 
     if (sizeof(tui64) != 8)
     {
         g_writeln("unusable tui64 size, must be 8");
-        return 0;
+        return 1;
+    }
+
+    return 0;
+}
+
+/*****************************************************************************/
+int DEFAULT_CC
+main(int argc, char **argv)
+{
+    int test;
+    char cfg_file[256];
+    enum logReturns error;
+    struct xrdp_startup_params *startup_params;
+    int pid;
+    int fd;
+    int no_daemon;
+    char text[256];
+    char pid_file[256];
+
+    g_init("xrdp");
+    ssl_init();
+
+    for (test = 0; test < argc; test++)
+    {
+        DEBUG(("Argument %i - %s", test, argv[test]));
     }
 
     g_snprintf(cfg_file, 255, "%s/xrdp.ini", XRDP_CFG_PATH);
@@ -401,6 +415,13 @@ main(int argc, char **argv)
         g_exit(0);
     }
 
+    if (xrdp_sanity_check() != 0)
+    {
+        g_writeln("Fatal error occurred, exiting");
+        g_deinit();
+        g_exit(1);
+    }
+
     if (startup_params->kill)
     {
         g_writeln("stopping xrdp");