Changeset 2a6ca4f for util.c

Timestamp:

2006-01-04T11:16:58Z (18 years ago)

Author:

Wilmer van der Gaast <wilmer@…>

Branches:

master

Children:

0196c47

Parents:

13c4cd3

Message:

Better handling of IPv4 connections in IPv6 mode. (Wrapping/Unwrapping of ::ffff:style addresses.)

File:

• util.c (modified) (1 diff)

util.c

@@ -403 +403 @@
         return source;
 }
+
+#ifdef IPV6
+/* Wrap an IPv4 address into IPv6 space. Not thread-safe... */
+char *ipv6_wrap( char *src )
+{
+        static char dst[64];
+        int i;
+        
+        for( i = 0; src[i]; i ++ )
+                if( ( src[i] < '0' || src[i] > '9' ) && src[i] != '.' )
+                        break;
+        
+        /* Hmm, it's not even an IP... */
+        if( src[i] )
+                return src;
+        
+        g_snprintf( dst, sizeof( dst ), "::ffff:%s", src );
+        
+        return dst;
+}
+
+/* Unwrap an IPv4 address into IPv6 space. Thread-safe, because it's very simple. :-) */
+char *ipv6_unwrap( char *src )
+{
+        int i;
+        
+        if( g_strncasecmp( src, "::ffff:", 7 ) != 0 )
+                return src;
+        
+        for( i = 7; src[i]; i ++ )
+                if( ( src[i] < '0' || src[i] > '9' ) && src[i] != '.' )
+                        break;
+        
+        /* Hmm, it's not even an IP... */
+        if( src[i] )
+                return src;
+        
+        return ( src + 7 );
+}
+#endif