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#include <cipher.h>
#if GLIB_CHECK_VERSION(2,16,0)
static void
purple_g_checksum_init(PurpleCipherContext *context, GChecksumType type)
{
GChecksum *checksum;
checksum = g_checksum_new(type);
purple_cipher_context_set_data(context, checksum);
}
static void
purple_g_checksum_reset(PurpleCipherContext *context, GChecksumType type)
{
GChecksum *checksum;
checksum = purple_cipher_context_get_data(context);
g_return_if_fail(checksum != NULL);
#if GLIB_CHECK_VERSION(2,18,0)
g_checksum_reset(checksum);
#else
g_checksum_free(checksum);
checksum = g_checksum_new(type);
purple_cipher_context_set_data(context, checksum);
#endif
}
static void
purple_g_checksum_uninit(PurpleCipherContext *context)
{
GChecksum *checksum;
checksum = purple_cipher_context_get_data(context);
g_return_if_fail(checksum != NULL);
g_checksum_free(checksum);
}
static void
purple_g_checksum_append(PurpleCipherContext *context, const guchar *data,
gsize len)
{
GChecksum *checksum;
checksum = purple_cipher_context_get_data(context);
g_return_if_fail(checksum != NULL);
while (len >= G_MAXSSIZE) {
g_checksum_update(checksum, data, G_MAXSSIZE);
len -= G_MAXSSIZE;
data += G_MAXSSIZE;
}
if (len)
g_checksum_update(checksum, data, len);
}
static gboolean
purple_g_checksum_digest(PurpleCipherContext *context, GChecksumType type,
gsize len, guchar *digest, gsize *out_len)
{
GChecksum *checksum;
const gssize required_length = g_checksum_type_get_length(type);
checksum = purple_cipher_context_get_data(context);
g_return_val_if_fail(len >= required_length, FALSE);
g_return_val_if_fail(checksum != NULL, FALSE);
g_checksum_get_digest(checksum, digest, &len);
purple_cipher_context_reset(context, NULL);
if (out_len)
*out_len = len;
return TRUE;
}
/******************************************************************************
* Macros
*****************************************************************************/
#define PURPLE_G_CHECKSUM_IMPLEMENTATION(lower, camel, type, block_size) \
static size_t \
lower##_get_block_size(PurpleCipherContext *context) { \
return (block_size); \
} \
\
static void \
lower##_init(PurpleCipherContext *context, gpointer extra) { \
purple_g_checksum_init(context, (type)); \
} \
\
static void \
lower##_reset(PurpleCipherContext *context, gpointer extra) { \
purple_g_checksum_reset(context, (type)); \
} \
\
static gboolean \
lower##_digest(PurpleCipherContext *context, gsize in_len, \
guchar digest[], size_t *out_len) \
{ \
return purple_g_checksum_digest(context, (type), in_len, digest, \
out_len); \
} \
\
static PurpleCipherOps camel##Ops = { \
NULL, /* Set option */ \
NULL, /* Get option */ \
lower##_init, /* init */ \
lower##_reset, /* reset */ \
purple_g_checksum_uninit, /* uninit */ \
NULL, /* set iv */ \
purple_g_checksum_append, /* append */ \
lower##_digest, /* digest */ \
NULL, /* encrypt */ \
NULL, /* decrypt */ \
NULL, /* set salt */ \
NULL, /* get salt size */ \
NULL, /* set key */ \
NULL, /* get key size */ \
NULL, /* set batch mode */ \
NULL, /* get batch mode */ \
lower##_get_block_size, /* get block size */ \
NULL /* set key with len */ \
}; \
\
PurpleCipherOps * \
purple_##lower##_cipher_get_ops(void) { \
return &camel##Ops; \
}
/******************************************************************************
* Macro Expansion
*****************************************************************************/
PURPLE_G_CHECKSUM_IMPLEMENTATION(md5, MD5, G_CHECKSUM_MD5, 64);
PURPLE_G_CHECKSUM_IMPLEMENTATION(sha1, SHA1, G_CHECKSUM_SHA1, 64);
PURPLE_G_CHECKSUM_IMPLEMENTATION(sha256, SHA256, G_CHECKSUM_SHA256, 64);
#endif /* GLIB_CHECK_VERSION(2,16,0) */
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