ported parts of two-sim branch

eap_identity parameter to exchange in eap_identity
	some auth_info/peer_cfg refactorings
	fixed some bugs, introduced new ones

src/libstrongswan/chunk.c

@@ -298,16 +298,28 @@ static char hex2bin(char hex)
 chunk_t chunk_from_hex(chunk_t hex, char *buf)
 {
 	int i, len;
+	bool odd = FALSE;
 	
-	len = hex.len / 2;
+	len = (hex.len / 2);
+	if (hex.len % 2)
+	{
+		odd = TRUE;
+		len++;
+	}
 	if (!buf)
 	{
 		buf = malloc(len);
 	}
-	for (i = 0; i < len; i++)
+	/* buffer is filled from the right */
+	memset(buf, 0, len);
+	hex.ptr += hex.len;
+	for (i = len - 1; i >= 0; i--)
 	{
-		buf[i] =  hex2bin(*hex.ptr++) << 4;
-		buf[i] |= hex2bin(*hex.ptr++);
+		buf[i] = hex2bin(*(--hex.ptr));
+		if (i > 0 || !odd)
+		{
+			buf[i] |= hex2bin(*(--hex.ptr)) << 4;
+		}
 	}
 	return chunk_create(buf, len);
 }

src/libstrongswan/chunk.h

@@ -100,7 +100,8 @@ chunk_t chunk_to_hex(chunk_t chunk, char *buf, bool uppercase);
 /**
  * Convert a hex encoded in a binary chunk.
  *
- * If buf is supplied, it must hold at least (hex.len / 2).
+ * If buf is supplied, it must hold at least (hex.len / 2) + (hex.len % 2)
+ * bytes. It is filled by the right to give correct values for short inputs.
  *
  * @param hex			hex encoded input data
  * @param buf			buffer to write decoded data, NULL to malloc
@@ -164,7 +165,7 @@ void chunk_clear(chunk_t *chunk);
 /**
  * Clone a chunk on heap
  */
-#define chunk_clone(chunk) chunk_create_clone(malloc(chunk.len), chunk)
+#define chunk_clone(chunk) chunk_create_clone((chunk).len ? malloc(chunk.len) : NULL, chunk)
 
 /**
  * Clone a chunk on stack

src/libstrongswan/utils/identification.c

@@ -915,6 +915,7 @@ static int print(FILE *stream, const struct printf_info *info,
 		case ID_FQDN:
 		case ID_RFC822_ADDR:
 		case ID_DER_ASN1_GN_URI:
+		case ID_EAP:
 			proper = sanitize_chunk(this->encoded);
 			snprintf(buf, sizeof(buf), "%.*s", proper.len, proper.ptr);
 			chunk_free(&proper);
@@ -1169,6 +1170,7 @@ identification_t *identification_create_from_encoding(id_type_t type, chunk_t en
 		case ID_PUBKEY_INFO_SHA1:
 		case ID_PUBKEY_SHA1:
 		case ID_CERT_DER_SHA1:
+		case ID_EAP:
 		default:
 			break;
 	}

src/libstrongswan/utils/identification.h

@@ -142,6 +142,11 @@ enum id_type_t {
 	 * SHA1 hash of the binary DER encoding of a certificate
 	 */
 	ID_CERT_DER_SHA1,
+	
+	/**
+	 * Generic EAP identity
+	 */
+	ID_EAP,
 };
 
 /**