diff options
Diffstat (limited to 'libpurple/ciphers/sha1hash.c')
| -rw-r--r-- | libpurple/ciphers/sha1hash.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/libpurple/ciphers/sha1hash.c b/libpurple/ciphers/sha1hash.c new file mode 100644 index 0000000000..4ebd34fa15 --- /dev/null +++ b/libpurple/ciphers/sha1hash.c @@ -0,0 +1,195 @@ +/* + * 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 "sha1hash.h" + +/******************************************************************************* + * Structs + ******************************************************************************/ +#define PURPLE_SHA1_HASH_GET_PRIVATE(obj) \ + (G_TYPE_INSTANCE_GET_PRIVATE((obj), PURPLE_TYPE_SHA1_HASH, PurpleSHA1HashPrivate)) + +typedef struct { + GChecksum *checksum; +} PurpleSHA1HashPrivate; + +/****************************************************************************** + * Globals + *****************************************************************************/ +static GObjectClass *parent_class = NULL; + +/****************************************************************************** + * Hash Stuff + *****************************************************************************/ + +static void +purple_sha1_hash_reset(PurpleHash *hash) +{ + PurpleSHA1Hash *sha1_hash = PURPLE_SHA1_HASH(hash); + PurpleSHA1HashPrivate *priv = PURPLE_SHA1_HASH_GET_PRIVATE(sha1_hash); + + g_return_if_fail(priv != NULL); + g_return_if_fail(priv->checksum != NULL); + + g_checksum_reset(priv->checksum); +} + +static void +purple_sha1_hash_append(PurpleHash *hash, const guchar *data, + gsize len) +{ + PurpleSHA1Hash *sha1_hash = PURPLE_SHA1_HASH(hash); + PurpleSHA1HashPrivate *priv = PURPLE_SHA1_HASH_GET_PRIVATE(sha1_hash); + + g_return_if_fail(priv != NULL); + g_return_if_fail(priv->checksum != NULL); + + while (len >= G_MAXSSIZE) { + g_checksum_update(priv->checksum, data, G_MAXSSIZE); + len -= G_MAXSSIZE; + data += G_MAXSSIZE; + } + + if (len) + g_checksum_update(priv->checksum, data, len); +} + +static gboolean +purple_sha1_hash_digest(PurpleHash *hash, guchar *digest, size_t buff_len) +{ + PurpleSHA1Hash *sha1_hash = PURPLE_SHA1_HASH(hash); + PurpleSHA1HashPrivate *priv = PURPLE_SHA1_HASH_GET_PRIVATE(sha1_hash); + + const gssize required_len = g_checksum_type_get_length(G_CHECKSUM_SHA1); + gsize digest_len = buff_len; + + g_return_val_if_fail(priv != NULL, FALSE); + g_return_val_if_fail(priv->checksum != NULL, FALSE); + g_return_val_if_fail(buff_len >= required_len, FALSE); + + g_checksum_get_digest(priv->checksum, digest, &digest_len); + + if (digest_len != required_len) + return FALSE; + + purple_sha1_hash_reset(hash); + + return TRUE; +} + +static size_t +purple_sha1_hash_get_block_size(PurpleHash *hash) +{ + return 64; +} + +static size_t +purple_sha1_hash_get_digest_size(PurpleHash *hash) +{ + return g_checksum_type_get_length(G_CHECKSUM_SHA1); +} + +static const gchar* +purple_sha1_hash_get_name(PurpleHash *hash) +{ + return "sha1"; +} + +/****************************************************************************** + * Object Stuff + *****************************************************************************/ + +static void +purple_sha1_hash_finalize(GObject *obj) +{ + PurpleSHA1Hash *sha1_hash = PURPLE_SHA1_HASH(obj); + PurpleSHA1HashPrivate *priv = PURPLE_SHA1_HASH_GET_PRIVATE(sha1_hash); + + if (priv->checksum) + g_checksum_free(priv->checksum); + + parent_class->finalize(obj); +} + +static void +purple_sha1_hash_class_init(PurpleSHA1HashClass *klass) { + GObjectClass *obj_class = G_OBJECT_CLASS(klass); + PurpleHashClass *hash_class = PURPLE_HASH_CLASS(klass); + + parent_class = g_type_class_peek_parent(klass); + + obj_class->finalize = purple_sha1_hash_finalize; + + hash_class->reset = purple_sha1_hash_reset; + hash_class->reset_state = purple_sha1_hash_reset; + hash_class->append = purple_sha1_hash_append; + hash_class->digest = purple_sha1_hash_digest; + hash_class->get_digest_size = purple_sha1_hash_get_digest_size; + hash_class->get_block_size = purple_sha1_hash_get_block_size; + hash_class->get_name = purple_sha1_hash_get_name; + + g_type_class_add_private(klass, sizeof(PurpleSHA1HashPrivate)); +} + +static void +purple_sha1_hash_init(PurpleHash *hash) +{ + PurpleSHA1Hash *sha1_hash = PURPLE_SHA1_HASH(hash); + PurpleSHA1HashPrivate *priv = PURPLE_SHA1_HASH_GET_PRIVATE(sha1_hash); + + priv->checksum = g_checksum_new(G_CHECKSUM_SHA1); + + purple_sha1_hash_reset(hash); +} + +/****************************************************************************** + * API + *****************************************************************************/ +GType +purple_sha1_hash_get_gtype(void) { + static GType type = 0; + + if(type == 0) { + static const GTypeInfo info = { + sizeof(PurpleSHA1HashClass), + NULL, + NULL, + (GClassInitFunc)purple_sha1_hash_class_init, + NULL, + NULL, + sizeof(PurpleSHA1Hash), + 0, + (GInstanceInitFunc)purple_sha1_hash_init, + NULL, + }; + + type = g_type_register_static(PURPLE_TYPE_HASH, + "PurpleSHA1Hash", + &info, 0); + } + + return type; +} + +PurpleHash * +purple_sha1_hash_new(void) { + return g_object_new(PURPLE_TYPE_SHA1_HASH, NULL); +} |