--- a/libpurple/ciphers/hmaccipher.c Sun May 28 13:26:27 2017 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,341 +0,0 @@
-/*
- * purple
- *
- * Purple is the legal property of its developers, whose names are too numerous
- * to list here. Please refer to the COPYRIGHT file distributed with this
- * source distribution.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
- */
-#include "internal.h"
-#include "glibcompat.h"
-
-#include "hmaccipher.h"
-
-#include <string.h>
-
-/*******************************************************************************
- * Structs
- ******************************************************************************/
-#define PURPLE_HMAC_CIPHER_GET_PRIVATE(obj) \
- (G_TYPE_INSTANCE_GET_PRIVATE((obj), PURPLE_TYPE_HMAC_CIPHER, PurpleHMACCipherPrivate))
-
-typedef struct {
- PurpleHash *hash;
- guchar *ipad;
- guchar *opad;
-} PurpleHMACCipherPrivate;
-
-/******************************************************************************
- * Enums
- *****************************************************************************/
-enum {
- PROP_NONE,
- PROP_HASH,
- PROP_LAST,
-};
-
-/*******************************************************************************
- * Globals
- ******************************************************************************/
-static GObjectClass *parent_class = NULL;
-static GParamSpec *properties[PROP_LAST];
-
-/*******************************************************************************
- * Helpers
- ******************************************************************************/
-static void
-purple_hmac_cipher_set_hash(PurpleCipher *cipher,
- PurpleHash *hash)
-{
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- priv->hash = g_object_ref(G_OBJECT(hash));
-
- g_object_notify_by_pspec(G_OBJECT(cipher), properties[PROP_HASH]);
-}
-
-/*******************************************************************************
- * Cipher Stuff
- ******************************************************************************/
-static void
-purple_hmac_cipher_reset(PurpleCipher *cipher) {
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- if(PURPLE_IS_HASH(priv->hash))
- purple_hash_reset(priv->hash);
-
- g_free(priv->ipad);
- priv->ipad = NULL;
- g_free(priv->opad);
- priv->opad = NULL;
-}
-
-static void
-purple_hmac_cipher_reset_state(PurpleCipher *cipher) {
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- if(PURPLE_IS_HASH(priv->hash)) {
- purple_hash_reset_state(priv->hash);
- purple_hash_append(priv->hash, priv->ipad,
- purple_hash_get_block_size(priv->hash));
- }
-}
-
-static void
-purple_hmac_cipher_append(PurpleCipher *cipher, const guchar *d, size_t l) {
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- g_return_if_fail(PURPLE_IS_HASH(priv->hash));
-
- purple_hash_append(priv->hash, d, l);
-}
-
-static gboolean
-purple_hmac_cipher_digest(PurpleCipher *cipher, guchar *out, size_t len)
-{
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
- guchar *digest = NULL;
- size_t hash_len, block_size;
- gboolean result = FALSE;
-
- g_return_val_if_fail(PURPLE_IS_HASH(priv->hash), FALSE);
-
- hash_len = purple_hash_get_digest_size(priv->hash);
- g_return_val_if_fail(hash_len > 0, FALSE);
-
- block_size = purple_hash_get_block_size(priv->hash);
- digest = g_malloc(hash_len);
-
- /* get the digest of the data */
- result = purple_hash_digest(priv->hash, digest, hash_len);
- purple_hash_reset(priv->hash);
-
- if(!result) {
- g_free(digest);
-
- return FALSE;
- }
-
- /* now append the opad and the digest from above */
- purple_hash_append(priv->hash, priv->opad, block_size);
- purple_hash_append(priv->hash, digest, hash_len);
-
- /* do our last digest */
- result = purple_hash_digest(priv->hash, out, len);
-
- /* cleanup */
- g_free(digest);
-
- return result;
-}
-
-static size_t
-purple_hmac_cipher_get_digest_size(PurpleCipher *cipher)
-{
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- g_return_val_if_fail(priv->hash != NULL, 0);
-
- return purple_hash_get_digest_size(priv->hash);
-}
-
-static void
-purple_hmac_cipher_set_key(PurpleCipher *cipher, const guchar *key,
- size_t key_len)
-{
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
- gsize block_size, i;
- guchar *full_key;
-
- g_return_if_fail(priv->hash);
-
- g_free(priv->ipad);
- g_free(priv->opad);
-
- block_size = purple_hash_get_block_size(priv->hash);
- priv->ipad = g_malloc(block_size);
- priv->opad = g_malloc(block_size);
-
- if (key_len > block_size) {
- purple_hash_reset(priv->hash);
- purple_hash_append(priv->hash, key, key_len);
-
- key_len = purple_hash_get_digest_size(priv->hash);
- full_key = g_malloc(key_len);
- purple_hash_digest(priv->hash, full_key, key_len);
- } else {
- full_key = g_memdup(key, key_len);
- }
-
- if (key_len < block_size) {
- full_key = g_realloc(full_key, block_size);
- memset(full_key + key_len, 0, block_size - key_len);
- }
-
- for(i = 0; i < block_size; i++) {
- priv->ipad[i] = 0x36 ^ full_key[i];
- priv->opad[i] = 0x5c ^ full_key[i];
- }
-
- g_free(full_key);
-
- purple_hash_reset(priv->hash);
- purple_hash_append(priv->hash, priv->ipad, block_size);
-}
-
-static size_t
-purple_hmac_cipher_get_block_size(PurpleCipher *cipher)
-{
- PurpleHMACCipherPrivate *priv = NULL;
-
- g_return_val_if_fail(PURPLE_IS_HMAC_CIPHER(cipher), 0);
-
- priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- return purple_hash_get_block_size(priv->hash);
-}
-
-/******************************************************************************
- * Object Stuff
- *****************************************************************************/
-static void
-purple_hmac_cipher_set_property(GObject *obj, guint param_id,
- const GValue *value,
- GParamSpec *pspec)
-{
- PurpleCipher *cipher = PURPLE_CIPHER(obj);
-
- switch(param_id) {
- case PROP_HASH:
- purple_hmac_cipher_set_hash(cipher, g_value_get_object(value));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, param_id, pspec);
- break;
- }
-}
-
-static void
-purple_hmac_cipher_get_property(GObject *obj, guint param_id, GValue *value,
- GParamSpec *pspec)
-{
- PurpleHMACCipher *cipher = PURPLE_HMAC_CIPHER(obj);
-
- switch(param_id) {
- case PROP_HASH:
- g_value_set_object(value,
- purple_hmac_cipher_get_hash(cipher));
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, param_id, pspec);
- break;
- }
-}
-
-static void
-purple_hmac_cipher_finalize(GObject *obj) {
- PurpleCipher *cipher = PURPLE_CIPHER(obj);
- PurpleHMACCipherPrivate *priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- purple_hmac_cipher_reset(cipher);
-
- if (priv->hash != NULL)
- g_object_unref(priv->hash);
-
- parent_class->finalize(obj);
-}
-
-static void
-purple_hmac_cipher_class_init(PurpleHMACCipherClass *klass) {
- GObjectClass *obj_class = G_OBJECT_CLASS(klass);
- PurpleCipherClass *cipher_class = PURPLE_CIPHER_CLASS(klass);
-
- parent_class = g_type_class_peek_parent(klass);
-
- g_type_class_add_private(klass, sizeof(PurpleHMACCipherPrivate));
-
- obj_class->finalize = purple_hmac_cipher_finalize;
- obj_class->get_property = purple_hmac_cipher_get_property;
- obj_class->set_property = purple_hmac_cipher_set_property;
-
- cipher_class->reset = purple_hmac_cipher_reset;
- cipher_class->reset_state = purple_hmac_cipher_reset_state;
- cipher_class->append = purple_hmac_cipher_append;
- cipher_class->digest = purple_hmac_cipher_digest;
- cipher_class->get_digest_size = purple_hmac_cipher_get_digest_size;
- cipher_class->set_key = purple_hmac_cipher_set_key;
- cipher_class->get_block_size = purple_hmac_cipher_get_block_size;
-
- properties[PROP_HASH] = g_param_spec_object("hash", "hash", "hash",
- PURPLE_TYPE_HASH,
- G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
- G_PARAM_STATIC_STRINGS);
-
- g_object_class_install_properties(obj_class, PROP_LAST, properties);
-}
-
-/******************************************************************************
- * PurpleHMACCipher API
- *****************************************************************************/
-GType
-purple_hmac_cipher_get_type(void) {
- static GType type = 0;
-
- if(type == 0) {
- static const GTypeInfo info = {
- sizeof(PurpleHMACCipherClass),
- NULL,
- NULL,
- (GClassInitFunc)purple_hmac_cipher_class_init,
- NULL,
- NULL,
- sizeof(PurpleHMACCipher),
- 0,
- (GInstanceInitFunc)purple_cipher_reset,
- NULL,
- };
-
- type = g_type_register_static(PURPLE_TYPE_CIPHER,
- "PurpleHMACCipher",
- &info, 0);
- }
-
- return type;
-}
-
-PurpleCipher *
-purple_hmac_cipher_new(PurpleHash *hash) {
- g_return_val_if_fail(PURPLE_IS_HASH(hash), NULL);
-
- return g_object_new(PURPLE_TYPE_HMAC_CIPHER,
- "hash", hash,
- NULL);
-}
-
-PurpleHash *
-purple_hmac_cipher_get_hash(const PurpleHMACCipher *cipher) {
- PurpleHMACCipherPrivate *priv = NULL;
-
- g_return_val_if_fail(PURPLE_IS_HMAC_CIPHER(cipher), NULL);
-
- priv = PURPLE_HMAC_CIPHER_GET_PRIVATE(cipher);
-
- if(priv && priv->hash)
- return priv->hash;
-
- return NULL;
-}
-