introduced new logging subsystem using bus:

passive listeners can register on the bus
  active listeners wait for signals actively
  multiplexing allows multiple listeners to receive debug signals
  a lot more...

src/libstrongswan/crypto/hashers/hasher.c

@@ -28,18 +28,15 @@
 #include <crypto/hashers/sha2_hasher.h>
 #include <crypto/hashers/md5_hasher.h>
 
-/**
- * String mappings for hash_algorithm_t.
- */
-mapping_t hash_algorithm_m[] = {
-	{HASH_MD2,"HASH_MD2"},
-	{HASH_MD5,"HASH_MD5"},
-	{HASH_SHA1,"HASH_SHA1"},
-	{HASH_SHA256,"HASH_SHA256"},
-	{HASH_SHA384,"HASH_SHA384"},
-	{HASH_SHA512,"HASH_SHA512"},
-	{MAPPING_END, NULL}
-};
+
+ENUM(hash_algorithm_names, HASH_MD2, HASH_SHA512,
+	"HASH_MD2",
+	"HASH_MD5",
+	"HASH_SHA1",
+	"HASH_SHA256",
+	"HASH_SHA384",
+	"HASH_SHA512"
+);
 
 /*
  * Described in header.

src/libstrongswan/crypto/hashers/hasher.h

@@ -43,17 +43,17 @@ typedef enum hash_algorithm_t hash_algorithm_t;
  * @ingroup hashers
  */
 enum hash_algorithm_t {
-	HASH_MD2,
+	HASH_MD2 = 0,
 	/** Implemented in class md5_hasher_t */
-	HASH_MD5,
+	HASH_MD5 = 1,
 	/** Implemented in class sha1_hasher_t */
-	HASH_SHA1,
+	HASH_SHA1 = 2,
 	/** Implemented in class sha2_hasher_t */
-	HASH_SHA256,
+	HASH_SHA256 = 3,
 	/** Implemented in class sha2_hasher_t */
-	HASH_SHA384,
+	HASH_SHA384 = 4,
 	/** Implemented in class sha2_hasher_t */
-	HASH_SHA512,
+	HASH_SHA512 = 5,
 };
 
 #define HASH_SIZE_MD2		16
@@ -65,9 +65,9 @@ enum hash_algorithm_t {
 #define HASH_SIZE_MAX		64
 
 /**
- * String mappings for hash_algorithm_t.
+ * enum names for hash_algorithm_t.
  */
-extern mapping_t hash_algorithm_m[];
+extern enum_name_t *hash_algorithm_names;
 
 
 typedef struct hasher_t hasher_t;