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hash_murmur.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Anatol Belski <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php_hash.h"
#include "php_hash_murmur.h"
#include "murmur/PMurHash.h"
#include "murmur/PMurHash128.h"
const php_hash_ops php_hash_murmur3a_ops = {
"murmur3a",
(php_hash_init_func_t) PHP_MURMUR3AInit,
(php_hash_update_func_t) PHP_MURMUR3AUpdate,
(php_hash_final_func_t) PHP_MURMUR3AFinal,
(php_hash_copy_func_t) PHP_MURMUR3ACopy,
php_hash_serialize,
php_hash_unserialize,
PHP_MURMUR3A_SPEC,
4,
4,
sizeof(PHP_MURMUR3A_CTX),
0
};
PHP_HASH_API void PHP_MURMUR3AInit(PHP_MURMUR3A_CTX *ctx, HashTable *args)
{
if (args) {
zval *seed = zend_hash_str_find_deref(args, "seed", sizeof("seed") - 1);
/* This might be a bit too restrictive, but thinking that a seed might be set
once and for all, it should be done a clean way. */
if (seed && IS_LONG == Z_TYPE_P(seed)) {
ctx->h = (uint32_t)Z_LVAL_P(seed);
} else {
ctx->h = 0;
}
} else {
ctx->h = 0;
}
ctx->carry = 0;
ctx->len = 0;
}
PHP_HASH_API void PHP_MURMUR3AUpdate(PHP_MURMUR3A_CTX *ctx, const unsigned char *in, size_t len)
{
ctx->len += len;
PMurHash32_Process(&ctx->h, &ctx->carry, in, len);
}
PHP_HASH_API void PHP_MURMUR3AFinal(unsigned char digest[4], PHP_MURMUR3A_CTX *ctx)
{
ctx->h = PMurHash32_Result(ctx->h, ctx->carry, ctx->len);
digest[0] = (unsigned char)((ctx->h >> 24) & 0xff);
digest[1] = (unsigned char)((ctx->h >> 16) & 0xff);
digest[2] = (unsigned char)((ctx->h >> 8) & 0xff);
digest[3] = (unsigned char)(ctx->h & 0xff);
}
PHP_HASH_API int PHP_MURMUR3ACopy(const php_hash_ops *ops, PHP_MURMUR3A_CTX *orig_context, PHP_MURMUR3A_CTX *copy_context)
{
copy_context->h = orig_context->h;
copy_context->carry = orig_context->carry;
copy_context->len = orig_context->len;
return SUCCESS;
}
const php_hash_ops php_hash_murmur3c_ops = {
"murmur3c",
(php_hash_init_func_t) PHP_MURMUR3CInit,
(php_hash_update_func_t) PHP_MURMUR3CUpdate,
(php_hash_final_func_t) PHP_MURMUR3CFinal,
(php_hash_copy_func_t) PHP_MURMUR3CCopy,
php_hash_serialize,
php_hash_unserialize,
PHP_MURMUR3C_SPEC,
16,
4,
sizeof(PHP_MURMUR3C_CTX),
0
};
PHP_HASH_API void PHP_MURMUR3CInit(PHP_MURMUR3C_CTX *ctx, HashTable *args)
{
if (args) {
zval *seed = zend_hash_str_find_deref(args, "seed", sizeof("seed") - 1);
/* This might be a bit too restrictive, but thinking that a seed might be set
once and for all, it should be done a clean way. */
if (seed && IS_LONG == Z_TYPE_P(seed)) {
uint32_t _seed = (uint32_t)Z_LVAL_P(seed);
ctx->h[0] = _seed;
ctx->h[1] = _seed;
ctx->h[2] = _seed;
ctx->h[3] = _seed;
} else {
memset(&ctx->h, 0, sizeof ctx->h);
}
} else {
memset(&ctx->h, 0, sizeof ctx->h);
}
memset(&ctx->carry, 0, sizeof ctx->carry);
ctx->len = 0;
}
PHP_HASH_API void PHP_MURMUR3CUpdate(PHP_MURMUR3C_CTX *ctx, const unsigned char *in, size_t len)
{
ctx->len += len;
PMurHash128x86_Process(ctx->h, ctx->carry, in, len);
}
PHP_HASH_API void PHP_MURMUR3CFinal(unsigned char digest[16], PHP_MURMUR3C_CTX *ctx)
{
uint32_t h[4] = {0, 0, 0, 0};
PMurHash128x86_Result(ctx->h, ctx->carry, ctx->len, h);
digest[0] = (unsigned char)((h[0] >> 24) & 0xff);
digest[1] = (unsigned char)((h[0] >> 16) & 0xff);
digest[2] = (unsigned char)((h[0] >> 8) & 0xff);
digest[3] = (unsigned char)(h[0] & 0xff);
digest[4] = (unsigned char)((h[1] >> 24) & 0xff);
digest[5] = (unsigned char)((h[1] >> 16) & 0xff);
digest[6] = (unsigned char)((h[1] >> 8) & 0xff);
digest[7] = (unsigned char)(h[1] & 0xff);
digest[8] = (unsigned char)((h[2] >> 24) & 0xff);
digest[9] = (unsigned char)((h[2] >> 16) & 0xff);
digest[10] = (unsigned char)((h[2] >> 8) & 0xff);
digest[11] = (unsigned char)(h[2] & 0xff);
digest[12] = (unsigned char)((h[3] >> 24) & 0xff);
digest[13] = (unsigned char)((h[3] >> 16) & 0xff);
digest[14] = (unsigned char)((h[3] >> 8) & 0xff);
digest[15] = (unsigned char)(h[3] & 0xff);
}
PHP_HASH_API int PHP_MURMUR3CCopy(const php_hash_ops *ops, PHP_MURMUR3C_CTX *orig_context, PHP_MURMUR3C_CTX *copy_context)
{
memcpy(©_context->h, &orig_context->h, sizeof orig_context->h);
memcpy(©_context->carry, &orig_context->carry, sizeof orig_context->carry);
copy_context->len = orig_context->len;
return SUCCESS;
}
const php_hash_ops php_hash_murmur3f_ops = {
"murmur3f",
(php_hash_init_func_t) PHP_MURMUR3FInit,
(php_hash_update_func_t) PHP_MURMUR3FUpdate,
(php_hash_final_func_t) PHP_MURMUR3FFinal,
(php_hash_copy_func_t) PHP_MURMUR3FCopy,
php_hash_serialize,
php_hash_unserialize,
PHP_MURMUR3F_SPEC,
16,
8,
sizeof(PHP_MURMUR3F_CTX),
0
};
PHP_HASH_API void PHP_MURMUR3FInit(PHP_MURMUR3F_CTX *ctx, HashTable *args)
{
if (args) {
zval *seed = zend_hash_str_find_deref(args, "seed", sizeof("seed") - 1);
/* This might be a bit too restrictive, but thinking that a seed might be set
once and for all, it should be done a clean way. */
if (seed && IS_LONG == Z_TYPE_P(seed)) {
uint64_t _seed = (uint64_t)Z_LVAL_P(seed);
ctx->h[0] = _seed;
ctx->h[1] = _seed;
} else {
memset(&ctx->h, 0, sizeof ctx->h);
}
} else {
memset(&ctx->h, 0, sizeof ctx->h);
}
memset(&ctx->carry, 0, sizeof ctx->carry);
ctx->len = 0;
}
PHP_HASH_API void PHP_MURMUR3FUpdate(PHP_MURMUR3F_CTX *ctx, const unsigned char *in, size_t len)
{
ctx->len += len;
PMurHash128x64_Process(ctx->h, ctx->carry, in, len);
}
PHP_HASH_API void PHP_MURMUR3FFinal(unsigned char digest[16], PHP_MURMUR3F_CTX *ctx)
{
uint64_t h[2] = {0, 0};
PMurHash128x64_Result(ctx->h, ctx->carry, ctx->len, h);
digest[0] = (unsigned char)((h[0] >> 56) & 0xff);
digest[1] = (unsigned char)((h[0] >> 48) & 0xff);
digest[2] = (unsigned char)((h[0] >> 40) & 0xff);
digest[3] = (unsigned char)((h[0] >> 32) & 0xff);
digest[4] = (unsigned char)((h[0] >> 24) & 0xff);
digest[5] = (unsigned char)((h[0] >> 16) & 0xff);
digest[6] = (unsigned char)((h[0] >> 8) & 0xff);
digest[7] = (unsigned char)(h[0] & 0xff);
digest[8] = (unsigned char)((h[1] >> 56) & 0xff);
digest[9] = (unsigned char)((h[1] >> 48) & 0xff);
digest[10] = (unsigned char)((h[1] >> 40) & 0xff);
digest[11] = (unsigned char)((h[1] >> 32) & 0xff);
digest[12] = (unsigned char)((h[1] >> 24) & 0xff);
digest[13] = (unsigned char)((h[1] >> 16) & 0xff);
digest[14] = (unsigned char)((h[1] >> 8) & 0xff);
digest[15] = (unsigned char)(h[1] & 0xff);
}
PHP_HASH_API int PHP_MURMUR3FCopy(const php_hash_ops *ops, PHP_MURMUR3F_CTX *orig_context, PHP_MURMUR3F_CTX *copy_context)
{
memcpy(©_context->h, &orig_context->h, sizeof orig_context->h);
memcpy(©_context->carry, &orig_context->carry, sizeof orig_context->carry);
copy_context->len = orig_context->len;
return SUCCESS;
}