#include "php_hash.h"
#include "php_hash_fnv.h"
const php_hash_ops php_hash_fnv132_ops = {
(php_hash_init_func_t) PHP_FNV132Init,
(php_hash_update_func_t) PHP_FNV132Update,
(php_hash_final_func_t) PHP_FNV132Final,
(php_hash_copy_func_t) php_hash_copy,
4,
4,
sizeof(PHP_FNV132_CTX)
};
const php_hash_ops php_hash_fnv1a32_ops = {
(php_hash_init_func_t) PHP_FNV132Init,
(php_hash_update_func_t) PHP_FNV1a32Update,
(php_hash_final_func_t) PHP_FNV132Final,
(php_hash_copy_func_t) php_hash_copy,
4,
4,
sizeof(PHP_FNV132_CTX)
};
const php_hash_ops php_hash_fnv164_ops = {
(php_hash_init_func_t) PHP_FNV164Init,
(php_hash_update_func_t) PHP_FNV164Update,
(php_hash_final_func_t) PHP_FNV164Final,
(php_hash_copy_func_t) php_hash_copy,
8,
4,
sizeof(PHP_FNV164_CTX)
};
const php_hash_ops php_hash_fnv1a64_ops = {
(php_hash_init_func_t) PHP_FNV164Init,
(php_hash_update_func_t) PHP_FNV1a64Update,
(php_hash_final_func_t) PHP_FNV164Final,
(php_hash_copy_func_t) php_hash_copy,
8,
4,
sizeof(PHP_FNV164_CTX)
};
PHP_HASH_API void PHP_FNV132Init(PHP_FNV132_CTX *context)
{
context->state = PHP_FNV1_32_INIT;
}
PHP_HASH_API void PHP_FNV132Update(PHP_FNV132_CTX *context, const unsigned char *input,
unsigned int inputLen)
{
context->state = fnv_32_buf((void *)input, inputLen, context->state, 0);
}
PHP_HASH_API void PHP_FNV1a32Update(PHP_FNV132_CTX *context, const unsigned char *input,
unsigned int inputLen)
{
context->state = fnv_32_buf((void *)input, inputLen, context->state, 1);
}
PHP_HASH_API void PHP_FNV132Final(unsigned char digest[4], PHP_FNV132_CTX * context)
{
#ifdef WORDS_BIGENDIAN
memcpy(digest, &context->state, 4);
#else
int i = 0;
unsigned char *c = (unsigned char *) &context->state;
for (i = 0; i < 4; i++) {
digest[i] = c[3 - i];
}
#endif
}
PHP_HASH_API void PHP_FNV164Init(PHP_FNV164_CTX *context)
{
context->state = PHP_FNV1_64_INIT;
}
PHP_HASH_API void PHP_FNV164Update(PHP_FNV164_CTX *context, const unsigned char *input,
unsigned int inputLen)
{
context->state = fnv_64_buf((void *)input, inputLen, context->state, 0);
}
PHP_HASH_API void PHP_FNV1a64Update(PHP_FNV164_CTX *context, const unsigned char *input,
unsigned int inputLen)
{
context->state = fnv_64_buf((void *)input, inputLen, context->state, 1);
}
PHP_HASH_API void PHP_FNV164Final(unsigned char digest[8], PHP_FNV164_CTX * context)
{
#ifdef WORDS_BIGENDIAN
memcpy(digest, &context->state, 8);
#else
int i = 0;
unsigned char *c = (unsigned char *) &context->state;
for (i = 0; i < 8; i++) {
digest[i] = c[7 - i];
}
#endif
}
static php_hash_uint32
fnv_32_buf(void *buf, size_t len, php_hash_uint32 hval, int alternate)
{
unsigned char *bp = (unsigned char *)buf;
unsigned char *be = bp + len;
while (bp < be) {
if (alternate == 0) {
hval *= PHP_FNV_32_PRIME;
hval ^= (php_hash_uint32)*bp++;
} else {
hval ^= (php_hash_uint32)*bp++;
hval *= PHP_FNV_32_PRIME;
}
}
return hval;
}
static php_hash_uint64
fnv_64_buf(void *buf, size_t len, php_hash_uint64 hval, int alternate)
{
unsigned char *bp = (unsigned char *)buf;
unsigned char *be = bp + len;
while (bp < be) {
if (alternate == 0) {
hval *= PHP_FNV_64_PRIME;
hval ^= (php_hash_uint64)*bp++;
} else {
hval ^= (php_hash_uint64)*bp++;
hval *= PHP_FNV_64_PRIME;
}
}
return hval;
}