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php_memcached.c
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php_memcached.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 2009-2010 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: |
| http://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 |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrei Zmievski <andrei@php.net> |
+----------------------------------------------------------------------+
Portions Copyright 2012-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in
compliance with the License. A copy of the License is located at
http://aws.amazon.com/apache2.0/
or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
*/
/* $ Id: $ */
/* TODO
* - set LIBKETAMA_COMPATIBLE as the default?
* - fix unserialize(serialize($memc))
* - ability to set binary protocol for sessions
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <php.h>
#include <php_main.h>
#ifdef ZTS
#include "TSRM.h"
#endif
#include <php_ini.h>
#include <SAPI.h>
#include <ext/standard/info.h>
#include <zend_extensions.h>
#include <zend_exceptions.h>
#include <ext/standard/php_smart_str.h>
#include <ext/standard/php_var.h>
#include <ext/standard/basic_functions.h>
#include "php_memcached.h"
#include "g_fmt.h"
#ifdef HAVE_MEMCACHED_SESSION
# include "php_memcached_session.h"
#endif
#include "fastlz/fastlz.h"
#include <zlib.h>
/* Used to store the size of the block */
#if defined(HAVE_INTTYPES_H)
#include <inttypes.h>
#elif defined(HAVE_STDINT_H)
#include <stdint.h>
#endif
#ifdef PHP_WIN32
# include "win32/php_stdint.h"
#else
# ifndef HAVE_INT32_T
# if SIZEOF_INT == 4
typedef int int32_t;
# elif SIZEOF_LONG == 4
typedef long int int32_t;
# endif
# endif
# ifndef HAVE_UINT32_T
# if SIZEOF_INT == 4
typedef unsigned int uint32_t;
# elif SIZEOF_LONG == 4
typedef unsigned long int uint32_t;
# endif
# endif
#endif
#ifdef HAVE_JSON_API
# include "ext/json/php_json.h"
#endif
#ifdef HAVE_MEMCACHED_IGBINARY
# include "ext/igbinary/igbinary.h"
#endif
/*
* This is needed because PHP 5.3.[01] does not install JSON_parser.h by default. This
* constant will move into php_json.h in the future anyway.
*/
#ifndef JSON_PARSER_DEFAULT_DEPTH
#define JSON_PARSER_DEFAULT_DEPTH 512
#endif
/****************************************
Custom options
****************************************/
#define MEMC_OPT_COMPRESSION -1001
#define MEMC_OPT_PREFIX_KEY -1002
#define MEMC_OPT_SERIALIZER -1003
#define MEMC_OPT_COMPRESSION_TYPE -1004
/****************************************
Custom result codes
****************************************/
#define MEMC_RES_PAYLOAD_FAILURE -1001
/****************************************
Payload value flags
****************************************/
#define MEMC_VAL_TYPE_MASK 0xf
#define MEMC_VAL_GET_TYPE(flags) ((flags) & MEMC_VAL_TYPE_MASK)
#define MEMC_VAL_SET_TYPE(flags, type) ((flags) |= ((type) & MEMC_VAL_TYPE_MASK))
#define MEMC_VAL_IS_STRING 0
#define MEMC_VAL_IS_LONG 1
#define MEMC_VAL_IS_DOUBLE 2
#define MEMC_VAL_IS_BOOL 3
#define MEMC_VAL_IS_SERIALIZED 4
#define MEMC_VAL_IS_IGBINARY 5
#define MEMC_VAL_IS_JSON 6
#define MEMC_VAL_COMPRESSED (1<<4)
#define MEMC_VAL_COMPRESSION_ZLIB (1<<5)
#define MEMC_VAL_COMPRESSION_FASTLZ (1<<6)
/****************************************
"get" operation flags
****************************************/
#define MEMC_GET_PRESERVE_ORDER (1<<0)
/****************************************
Helper macros
****************************************/
#define MEMC_METHOD_INIT_VARS \
zval* object = getThis(); \
php_memc_t* i_obj = NULL; \
struct memc_obj* m_obj = NULL;
#define MEMC_METHOD_FETCH_OBJECT \
i_obj = (php_memc_t *) zend_object_store_get_object( object TSRMLS_CC ); \
m_obj = i_obj->obj; \
if (!m_obj) { \
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Memcached constructor was not called"); \
return; \
}
#ifndef DVAL_TO_LVAL
#ifdef _WIN64
# define DVAL_TO_LVAL(d, l) \
if ((d) > LONG_MAX) { \
(l) = (long)(unsigned long)(__int64) (d); \
} else { \
(l) = (long) (d); \
}
#else
# define DVAL_TO_LVAL(d, l) \
if ((d) > LONG_MAX) { \
(l) = (unsigned long) (d); \
} else { \
(l) = (long) (d); \
}
#endif
#endif
#define RETURN_FROM_GET RETURN_FALSE
#if (PHP_MAJOR_VERSION == 5) && (PHP_MINOR_VERSION < 3)
#define zend_parse_parameters_none() \
zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "")
#endif
/****************************************
Structures and definitions
****************************************/
enum memcached_compression_type {
COMPRESSION_TYPE_ZLIB = 1,
COMPRESSION_TYPE_FASTLZ = 2,
};
typedef struct {
zend_object zo;
struct memc_obj {
memcached_st *memc;
zend_bool compression;
enum memcached_serializer serializer;
enum memcached_compression_type compression_type;
#if HAVE_MEMCACHED_SASL
zend_bool has_sasl_data;
#endif
} *obj;
zend_bool is_persistent;
zend_bool is_pristine;
int rescode;
int memc_errno;
} php_memc_t;
enum {
MEMC_OP_SET,
MEMC_OP_TOUCH,
MEMC_OP_ADD,
MEMC_OP_REPLACE,
MEMC_OP_APPEND,
MEMC_OP_PREPEND
};
static zend_class_entry *memcached_ce = NULL;
static zend_class_entry *memcached_exception_ce = NULL;
static zend_object_handlers memcached_object_handlers;
struct callbackContext
{
zval *array;
zval *entry;
memcached_stat_st *stats; /* for use with functions that need stats */
void *return_value;
unsigned int i; /* for use with structures mapped against servers */
};
#if HAVE_SPL
static zend_class_entry *spl_ce_RuntimeException = NULL;
#endif
#if (PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION < 3)
const zend_fcall_info empty_fcall_info = { 0, NULL, NULL, NULL, NULL, 0, NULL, NULL, 0 };
#undef ZEND_BEGIN_ARG_INFO_EX
#define ZEND_BEGIN_ARG_INFO_EX(name, pass_rest_by_reference, return_reference, required_num_args) \
static zend_arg_info name[] = { \
{ NULL, 0, NULL, 0, 0, 0, pass_rest_by_reference, return_reference, required_num_args },
#endif
ZEND_DECLARE_MODULE_GLOBALS(php_memcached)
#ifdef COMPILE_DL_MEMCACHED
ZEND_GET_MODULE(memcached)
#endif
static PHP_INI_MH(OnUpdateCompressionType)
{
if (!new_value) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(new_value, "fastlz")) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(new_value, "zlib")) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_ZLIB;
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}
static PHP_INI_MH(OnUpdateSerializer)
{
if (!new_value) {
MEMC_G(serializer) = SERIALIZER_DEFAULT;
} else if (!strcmp(new_value, "php")) {
MEMC_G(serializer) = SERIALIZER_PHP;
#ifdef HAVE_MEMCACHE_IGBINARY
} else if (!strcmp(new_value, "igbinary")) {
MEMC_G(serializer) = SERIALIZER_IGBINARY;
#endif // IGBINARY
#ifdef HAVE_JSON_API
} else if (!strcmp(new_value, "json")) {
MEMC_G(serializer) = SERIALIZER_JSON;
} else if (!strcmp(new_value, "json_array")) {
MEMC_G(serializer) = SERIALIZER_JSON_ARRAY;
#endif // JSON
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}
/* {{{ INI entries */
PHP_INI_BEGIN()
#ifdef HAVE_MEMCACHED_SESSION
STD_PHP_INI_ENTRY("memcached.sess_locking", "1", PHP_INI_ALL, OnUpdateBool, sess_locking_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_consistent_hash", "0", PHP_INI_ALL, OnUpdateBool, sess_consistent_hash_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_binary", "0", PHP_INI_ALL, OnUpdateBool, sess_binary_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_lock_wait", "150000", PHP_INI_ALL, OnUpdateLongGEZero,sess_lock_wait, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_prefix", "memc.sess.key.", PHP_INI_ALL, OnUpdateString, sess_prefix, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_number_of_replicas", "0", PHP_INI_ALL, OnUpdateLongGEZero, sess_number_of_replicas, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_randomize_replica_read", "0", PHP_INI_ALL, OnUpdateBool, sess_randomize_replica_read, zend_php_memcached_globals, php_memcached_globals)
#endif
STD_PHP_INI_ENTRY("memcached.compression_type", "fastlz", PHP_INI_ALL, OnUpdateCompressionType, compression_type, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.compression_factor", "1.3", PHP_INI_ALL, OnUpdateReal, compression_factor, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.compression_threshold", "2000", PHP_INI_ALL, OnUpdateLong, compression_threshold, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.serializer", SERIALIZER_DEFAULT_NAME, PHP_INI_ALL, OnUpdateSerializer, serializer_name, zend_php_memcached_globals, php_memcached_globals)
#if HAVE_MEMCACHED_SASL
STD_PHP_INI_ENTRY("memcached.use_sasl", "0", PHP_INI_SYSTEM, OnUpdateBool, use_sasl, zend_php_memcached_globals, php_memcached_globals)
#endif
PHP_INI_END()
/* }}} */
/****************************************
Forward declarations
****************************************/
static int php_memc_handle_error(php_memc_t *i_obj, memcached_return status TSRMLS_DC);
static char *php_memc_zval_to_payload(zval *value, size_t *payload_len, uint32_t *flags, enum memcached_serializer serializer, enum memcached_compression_type compression_type TSRMLS_DC);
static int php_memc_zval_from_payload(zval *value, char *payload, size_t payload_len, uint32_t flags, enum memcached_serializer serializer TSRMLS_DC);
static void php_memc_get_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_store_impl(INTERNAL_FUNCTION_PARAMETERS, int op, zend_bool by_key);
static void php_memc_setMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_delete_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_deleteMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static memcached_return php_memc_do_cache_callback(zval *memc_obj, zend_fcall_info *fci, zend_fcall_info_cache *fcc, char *key, size_t key_len, zval *value TSRMLS_DC);
static int php_memc_do_result_callback(zval *memc_obj, zend_fcall_info *fci, zend_fcall_info_cache *fcc, memcached_result_st *result TSRMLS_DC);
static memcached_return php_memc_do_serverlist_callback(const memcached_st *ptr, memcached_server_instance_st instance, void *in_context);
static memcached_return php_memc_do_stats_callback(const memcached_st *ptr, memcached_server_instance_st instance, void *in_context);
static memcached_return php_memc_do_version_callback(const memcached_st *ptr, memcached_server_instance_st instance, void *in_context);
static void php_memc_destroy(struct memc_obj *m_obj, zend_bool persistent TSRMLS_DC);
/****************************************
Method implementations
****************************************/
static zend_bool php_memcached_on_new_callback(zval *object, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, char *persistent_id, int persistent_id_len TSRMLS_DC)
{
zval pid_z;
zval *retval_ptr, *pid_z_ptr = &pid_z;
zval **params[2];
INIT_ZVAL(pid_z);
if (persistent_id) {
ZVAL_STRINGL(pid_z_ptr, persistent_id, persistent_id_len, 1);
}
/* Call the cb */
params[0] = &object;
params[1] = &pid_z_ptr;
fci->params = params;
fci->param_count = 2;
fci->retval_ptr_ptr = &retval_ptr;
fci->no_separation = 1;
if (zend_call_function(fci, fci_cache TSRMLS_CC) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to invoke 'on_new' callback %s()", Z_STRVAL_P(fci->function_name));
return 0;
}
zval_dtor(pid_z_ptr);
if (retval_ptr) {
zval_ptr_dtor(&retval_ptr);
}
return 1;
}
static int le_memc, le_memc_sess;
static int php_memc_list_entry(void)
{
return le_memc;
}
/* {{{ Memcached::__construct([string persistent_id[, callback on_new[, string connection_str]]]))
Creates a Memcached object, optionally using persistent memcache connection */
static PHP_METHOD(Memcached, __construct)
{
zval *object = getThis();
php_memc_t *i_obj;
struct memc_obj *m_obj = NULL;
char *persistent_id = NULL, *conn_str = NULL;
int persistent_id_len, conn_str_len;
zend_bool is_persistent = 0;
char *plist_key = NULL;
int plist_key_len = 0;
zend_fcall_info fci = {0};
zend_fcall_info_cache fci_cache;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!f!s", &persistent_id, &persistent_id_len, &fci, &fci_cache, &conn_str, &conn_str_len) == FAILURE) {
ZVAL_NULL(object);
return;
}
i_obj = (php_memc_t *) zend_object_store_get_object(object TSRMLS_CC);
i_obj->is_pristine = 0;
if (persistent_id && *persistent_id) {
zend_rsrc_list_entry *le = NULL;
is_persistent = 1;
plist_key_len = spprintf(&plist_key, 0, "memcached:id=%s", persistent_id);
plist_key_len += 1;
if (zend_hash_find(&EG(persistent_list), plist_key, plist_key_len, (void *)&le) == SUCCESS) {
if (le->type == php_memc_list_entry()) {
m_obj = (struct memc_obj *) le->ptr;
}
}
i_obj->obj = m_obj;
}
i_obj->is_persistent = is_persistent;
if (!m_obj) {
m_obj = pecalloc(1, sizeof(*m_obj), is_persistent);
if (m_obj == NULL) {
if (plist_key) {
efree(plist_key);
}
php_error_docref(NULL TSRMLS_CC, E_ERROR, "out of memory: cannot allocate handle");
/* not reached */
}
if (conn_str) {
m_obj->memc = memcached(conn_str, conn_str_len);
if (!m_obj->memc) {
char error_buffer[1024];
if (plist_key) {
efree(plist_key);
}
if (libmemcached_check_configuration(conn_str, conn_str_len, error_buffer, sizeof(error_buffer)) != MEMCACHED_SUCCESS) {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "configuration error %s", error_buffer);
} else {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "could not allocate libmemcached structure");
}
/* not reached */
}
} else {
m_obj->memc = memcached_create(NULL);
if (m_obj->memc == NULL) {
if (plist_key) {
efree(plist_key);
}
php_error_docref(NULL TSRMLS_CC, E_ERROR, "could not allocate libmemcached structure");
/* not reached */
}
}
m_obj->serializer = MEMC_G(serializer);
m_obj->compression_type = MEMC_G(compression_type_real);
m_obj->compression = 1;
i_obj->obj = m_obj;
i_obj->is_pristine = 1;
if (fci.size) { /* will be 0 when not available */
if (!php_memcached_on_new_callback(object, &fci, &fci_cache, persistent_id, persistent_id_len TSRMLS_CC) || EG(exception)) {
/* error calling or exception thrown from callback */
if (plist_key) {
efree(plist_key);
}
i_obj->obj = NULL;
if (is_persistent) {
php_memc_destroy(m_obj, is_persistent TSRMLS_CC);
}
return;
}
}
if (is_persistent) {
zend_rsrc_list_entry le;
le.type = php_memc_list_entry();
le.ptr = m_obj;
if (zend_hash_update(&EG(persistent_list), (char *)plist_key,
plist_key_len, (void *)&le, sizeof(le), NULL) == FAILURE) {
if (plist_key) {
efree(plist_key);
}
php_error_docref(NULL TSRMLS_CC, E_ERROR, "could not register persistent entry");
/* not reached */
}
}
}
if (plist_key) {
efree(plist_key);
}
}
/* }}} */
/* {{{ Memcached::get(string key [, mixed callback [, double &cas_token ] ])
Returns a value for the given key or false */
PHP_METHOD(Memcached, get)
{
php_memc_get_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getByKey(string server_key, string key [, mixed callback [, double &cas_token ] ])
Returns a value for key from the server identified by the server key or false */
PHP_METHOD(Memcached, getByKey)
{
php_memc_get_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_get_impl */
static void php_memc_get_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
char *key = NULL;
int key_len = 0;
char *server_key = NULL;
int server_key_len = 0;
char *payload = NULL;
size_t payload_len = 0;
uint32_t flags = 0;
uint64_t cas = 0;
const char* keys[1] = { NULL };
size_t key_lens[1] = { 0 };
zval *cas_token = NULL;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fcc = empty_fcall_info_cache;
memcached_result_st result;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|f!z", &server_key,
&server_key_len, &key, &key_len, &fci, &fcc, &cas_token) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|f!z", &key, &key_len,
&fci, &fcc, &cas_token) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
if (key_len == 0 || strchr(key, ' ')) {
i_obj->rescode = MEMCACHED_BAD_KEY_PROVIDED;
RETURN_FROM_GET;
}
keys[0] = key;
key_lens[0] = key_len;
if (cas_token) {
uint64_t orig_cas_flag;
/*
* Enable CAS support, but only if it is currently disabled.
*/
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, keys, key_lens, 1);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
RETURN_FROM_GET;
}
status = MEMCACHED_SUCCESS;
memcached_result_create(m_obj->memc, &result);
if (memcached_fetch_result(m_obj->memc, &result, &status) == NULL) {
/* This is for historical reasons */
if (status == MEMCACHED_END)
status = MEMCACHED_NOTFOUND;
/*
* If the result wasn't found, and we have the read-through callback, invoke
* it to get the value. The CAS token will be 0, because we cannot generate it
* ourselves.
*/
if (status == MEMCACHED_NOTFOUND && fci.size != 0) {
status = php_memc_do_cache_callback(getThis(), &fci, &fcc, key, key_len,
return_value TSRMLS_CC);
ZVAL_DOUBLE(cas_token, 0);
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
memcached_result_free(&result);
RETURN_FROM_GET;
}
/* if we have a callback, all processing is done */
if (fci.size != 0) {
memcached_result_free(&result);
return;
}
}
payload = memcached_result_value(&result);
payload_len = memcached_result_length(&result);
flags = memcached_result_flags(&result);
cas = memcached_result_cas(&result);
if (php_memc_zval_from_payload(return_value, payload, payload_len, flags, m_obj->serializer TSRMLS_CC) < 0) {
memcached_result_free(&result);
i_obj->rescode = MEMC_RES_PAYLOAD_FAILURE;
RETURN_FROM_GET;
}
zval_dtor(cas_token);
ZVAL_DOUBLE(cas_token, (double)cas);
memcached_result_free(&result);
} else {
int rc;
zend_bool return_value_set = 0;
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, keys, key_lens, 1);
payload = memcached_fetch(m_obj->memc, NULL, NULL, &payload_len, &flags, &status);
/* This is for historical reasons */
if (status == MEMCACHED_END)
status = MEMCACHED_NOTFOUND;
/*
* If payload wasn't found and we have a read-through callback, invoke it to get
* the value. The callback will take care of storing the value back into memcache.
* The callback will set the return value.
*/
if (payload == NULL && status == MEMCACHED_NOTFOUND && fci.size != 0) {
size_t dummy_length;
uint32_t dummy_flags;
memcached_return dummy_status;
status = php_memc_do_cache_callback(getThis(), &fci, &fcc, key, key_len,
return_value TSRMLS_CC);
return_value_set = 1;
(void)memcached_fetch(m_obj->memc, NULL, NULL, &dummy_length, &dummy_flags, &dummy_status);
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
if (payload) {
free(payload);
}
RETURN_FROM_GET;
}
/* if memcached gave a value and there was no callback, payload may be NULL */
if (!return_value_set) {
rc = php_memc_zval_from_payload(return_value, payload, payload_len, flags, m_obj->serializer TSRMLS_CC);
free(payload);
if (rc < 0) {
i_obj->rescode = MEMC_RES_PAYLOAD_FAILURE;
RETURN_FROM_GET;
}
}
}
}
/* }}} */
/* {{{ Memcached::getMulti(array keys [, array &cas_tokens ])
Returns values for the given keys or false */
PHP_METHOD(Memcached, getMulti)
{
php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getMultiByKey(string server_key, array keys [, array &cas_tokens ])
Returns values for the given keys from the server identified by the server key or false */
PHP_METHOD(Memcached, getMultiByKey)
{
php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_getMulti_impl */
static void php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zval *keys = NULL;
char *server_key = NULL;
int server_key_len = 0;
size_t num_keys = 0;
zval **entry = NULL;
char *payload = NULL;
size_t payload_len = 0;
const char **mkeys = NULL;
size_t *mkeys_len = NULL;
char *res_key = NULL;
size_t res_key_len = 0;
uint32_t flags;
uint64_t cas = 0;
zval *cas_tokens = NULL;
uint64_t orig_cas_flag;
zval *value;
long get_flags = 0;
int i = 0;
zend_bool preserve_order;
memcached_result_st result;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sa/|zl", &server_key,
&server_key_len, &keys, &cas_tokens, &get_flags) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a/|zl", &keys, &cas_tokens, &get_flags) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
preserve_order = (get_flags & MEMC_GET_PRESERVE_ORDER);
num_keys = zend_hash_num_elements(Z_ARRVAL_P(keys));
mkeys = safe_emalloc(num_keys, sizeof(*mkeys), 0);
mkeys_len = safe_emalloc(num_keys, sizeof(*mkeys_len), 0);
array_init(return_value);
/*
* Create the array of keys for libmemcached. If none of the keys were valid
* (strings), set bad key result code and return.
*/
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(keys));
zend_hash_get_current_data(Z_ARRVAL_P(keys), (void**)&entry) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(keys))) {
if (Z_TYPE_PP(entry) != IS_STRING) {
convert_to_string_ex(entry);
}
if (Z_TYPE_PP(entry) == IS_STRING && Z_STRLEN_PP(entry) > 0) {
mkeys[i] = Z_STRVAL_PP(entry);
mkeys_len[i] = Z_STRLEN_PP(entry);
if (preserve_order) {
add_assoc_null_ex(return_value, mkeys[i], mkeys_len[i] + 1);
}
i++;
}
}
if (i == 0) {
i_obj->rescode = MEMCACHED_NOTFOUND;
efree(mkeys);
efree(mkeys_len);
return;
}
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (cas_tokens) {
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, mkeys, mkeys_len, i);
/* Handle error, but ignore, there might still be some result */
php_memc_handle_error(i_obj, status TSRMLS_CC);
/*
* Restore the CAS support flag, but only if we had to turn it on.
*/
if (cas_tokens && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
efree(mkeys);
efree(mkeys_len);
/*
* Iterate through the result set and create the result array. The CAS tokens are
* returned as doubles, because we cannot store potential 64-bit values in longs.
*/
if (cas_tokens) {
zval_dtor(cas_tokens);
array_init(cas_tokens);
}
memcached_result_create(m_obj->memc, &result);
while ((memcached_fetch_result(m_obj->memc, &result, &status)) != NULL) {
if (status != MEMCACHED_SUCCESS) {
status = MEMCACHED_SOME_ERRORS;
php_memc_handle_error(i_obj, status TSRMLS_CC);
continue;
}
payload = memcached_result_value(&result);
payload_len = memcached_result_length(&result);
flags = memcached_result_flags(&result);
res_key = memcached_result_key_value(&result);
res_key_len = memcached_result_key_length(&result);
/*
* This may be a bug in libmemcached, the key is not null terminated
* whe using the binary protocol.
*/
res_key[res_key_len] = 0;
MAKE_STD_ZVAL(value);
if (php_memc_zval_from_payload(value, payload, payload_len, flags, m_obj->serializer TSRMLS_CC) < 0) {
zval_ptr_dtor(&value);
if (EG(exception)) {
status = MEMC_RES_PAYLOAD_FAILURE;
php_memc_handle_error(i_obj, status TSRMLS_CC);
memcached_quit(m_obj->memc);
break;
}
status = MEMCACHED_SOME_ERRORS;
i_obj->rescode = MEMCACHED_SOME_ERRORS;
continue;
}
add_assoc_zval_ex(return_value, res_key, res_key_len+1, value);
if (cas_tokens) {
cas = memcached_result_cas(&result);
add_assoc_double_ex(cas_tokens, res_key, res_key_len+1, (double)cas);
}
}
memcached_result_free(&result);
if (EG(exception)) {
/* XXX: cas_tokens should only be set on success, currently we're destructive */
if (cas_tokens) {
zval_dtor(cas_tokens);
ZVAL_NULL(cas_tokens);
}
zval_dtor(return_value);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Memcached::getDelayed(array keys [, bool with_cas [, mixed callback ] ])
Sends a request for the given keys and returns immediately */
PHP_METHOD(Memcached, getDelayed)
{
php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getDelayedByKey(string server_key, array keys [, bool with_cas [, mixed callback ] ])
Sends a request for the given keys from the server identified by the server key and returns immediately */
PHP_METHOD(Memcached, getDelayedByKey)
{
php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_getDelayed_impl */
static void php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zval *keys = NULL;
char *server_key = NULL;
int server_key_len = 0;
zend_bool with_cas = 0;
size_t num_keys = 0;
zval **entry = NULL;
const char **mkeys = NULL;
size_t *mkeys_len = NULL;
uint64_t orig_cas_flag;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fcc = empty_fcall_info_cache;
int i = 0;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sa/|bf!", &server_key,
&server_key_len, &keys, &with_cas, &fci, &fcc) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a/|bf!", &keys, &with_cas,
&fci, &fcc) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
/*
* Create the array of keys for libmemcached. If none of the keys were valid
* (strings), set bad key result code and return.
*/
num_keys = zend_hash_num_elements(Z_ARRVAL_P(keys));
mkeys = safe_emalloc(num_keys, sizeof(*mkeys), 0);
mkeys_len = safe_emalloc(num_keys, sizeof(*mkeys_len), 0);
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(keys));
zend_hash_get_current_data(Z_ARRVAL_P(keys), (void**)&entry) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(keys))) {
if (Z_TYPE_PP(entry) != IS_STRING) {
convert_to_string_ex(entry);
}
if (Z_TYPE_PP(entry) == IS_STRING && Z_STRLEN_PP(entry) > 0) {
mkeys[i] = Z_STRVAL_PP(entry);
mkeys_len[i] = Z_STRLEN_PP(entry);
i++;
}
}
if (i == 0) {
i_obj->rescode = MEMCACHED_BAD_KEY_PROVIDED;
efree(mkeys);
efree(mkeys_len);
zval_dtor(return_value);
RETURN_FALSE;
}
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (with_cas) {
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
/*
* Issue the request, but collect results only if the result callback is provided.
*/
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, mkeys, mkeys_len, i);
/*
* Restore the CAS support flag, but only if we had to turn it on.
*/
if (with_cas && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
efree(mkeys);
efree(mkeys_len);
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
zval_dtor(return_value);
RETURN_FALSE;
}
if (fci.size != 0) {
/*
* We have a result callback. Iterate through the result set and invoke the
* callback for each one.
*/
memcached_result_st result;
memcached_result_create(m_obj->memc, &result);
while ((memcached_fetch_result(m_obj->memc, &result, &status)) != NULL) {
if (php_memc_do_result_callback(getThis(), &fci, &fcc, &result TSRMLS_CC) < 0) {
status = MEMCACHED_FAILURE;
break;
}
}
memcached_result_free(&result);
/* we successfully retrieved all rows */
if (status == MEMCACHED_END) {
status = MEMCACHED_SUCCESS;
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
RETURN_FALSE;
}
}
RETURN_TRUE;
}
/* }}} */
/* {{{ Memcached::fetch()
Returns the next result from a previous delayed request */