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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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrei Zmievski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* TODO
* - set LIBKETAMA_COMPATIBLE as the default?
* - fix unserialize(serialize($memc))
*/
#include "php_memcached.h"
#include "php_memcached_private.h"
#include "php_memcached_server.h"
#include "g_fmt.h"
#include <ctype.h>
#include <limits.h>
#ifdef HAVE_MEMCACHED_SESSION
# include "php_memcached_session.h"
#endif
#ifdef HAVE_FASTLZ_H
#include <fastlz.h>
#else
#include "fastlz/fastlz.h"
#endif
#include <zlib.h>
#ifdef HAVE_JSON_API
# include "ext/json/php_json.h"
#endif
#ifdef HAVE_MEMCACHED_IGBINARY
#ifdef PHP_WIN32
//Windows extensions are generally built together,
//so it wont be in the installed location
#include "igbinary.h"
#else
# include "ext/igbinary/igbinary.h"
#endif
#endif
#ifdef HAVE_MEMCACHED_MSGPACK
# include "ext/msgpack/php_msgpack.h"
#endif
static int le_memc;
static int php_memc_list_entry(void) {
return le_memc;
}
/****************************************
Protocol parameters
****************************************/
#define MEMC_OBJECT_KEY_MAX_LENGTH 250
/****************************************
Custom options
****************************************/
#define MEMC_OPT_COMPRESSION -1001
#define MEMC_OPT_PREFIX_KEY -1002
#define MEMC_OPT_SERIALIZER -1003
#define MEMC_OPT_COMPRESSION_TYPE -1004
#define MEMC_OPT_STORE_RETRY_COUNT -1005
#define MEMC_OPT_USER_FLAGS -1006
/****************************************
Custom result codes
****************************************/
#define MEMC_RES_PAYLOAD_FAILURE -1001
/****************************************
Payload value flags
****************************************/
#define MEMC_CREATE_MASK(start, n_bits) (((1 << n_bits) - 1) << start)
#define MEMC_MASK_TYPE MEMC_CREATE_MASK(0, 4)
#define MEMC_MASK_INTERNAL MEMC_CREATE_MASK(4, 12)
#define MEMC_MASK_USER MEMC_CREATE_MASK(16, 16)
#define MEMC_VAL_GET_TYPE(flags) ((flags) & MEMC_MASK_TYPE)
#define MEMC_VAL_SET_TYPE(flags, type) ((flags) |= ((type) & MEMC_MASK_TYPE))
#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_IS_MSGPACK 7
#define MEMC_VAL_COMPRESSED (1<<0)
#define MEMC_VAL_COMPRESSION_ZLIB (1<<1)
#define MEMC_VAL_COMPRESSION_FASTLZ (1<<2)
#define MEMC_VAL_GET_FLAGS(internal_flags) (((internal_flags) & MEMC_MASK_INTERNAL) >> 4)
#define MEMC_VAL_SET_FLAG(internal_flags, internal_flag) ((internal_flags) |= (((internal_flag) << 4) & MEMC_MASK_INTERNAL))
#define MEMC_VAL_HAS_FLAG(internal_flags, internal_flag) ((MEMC_VAL_GET_FLAGS(internal_flags) & (internal_flag)) == (internal_flag))
#define MEMC_VAL_DEL_FLAG(internal_flags, internal_flag) (internal_flags &= (~(((internal_flag) << 4) & MEMC_MASK_INTERNAL)))
/****************************************
User-defined flags
****************************************/
#define MEMC_VAL_GET_USER_FLAGS(flags) ((flags & MEMC_MASK_USER) >> 16)
#define MEMC_VAL_SET_USER_FLAGS(flags, udf_flags) ((flags) |= ((udf_flags << 16) & MEMC_MASK_USER))
#define MEMC_VAL_USER_FLAGS_MAX ((1 << 16) - 1)
/****************************************
"get" operation flags
****************************************/
#define MEMC_GET_PRESERVE_ORDER 1
#define MEMC_GET_EXTENDED 2
/****************************************
Helper macros
****************************************/
#define RETURN_FROM_GET RETURN_FALSE
#define COPY_STR(value) strdup((char *)value)
#define COPY_PTR_INT(value) *((int *)value)
/****************************************
Structures and definitions
****************************************/
typedef enum {
MEMC_OP_SET,
MEMC_OP_TOUCH,
MEMC_OP_ADD,
MEMC_OP_REPLACE,
MEMC_OP_APPEND,
MEMC_OP_PREPEND
} php_memc_write_op;
typedef struct {
zend_bool is_persistent;
zend_bool compression_enabled;
zend_bool encoding_enabled;
zend_long serializer;
zend_long compression_type;
zend_long store_retry_count;
zend_long set_udf_flags;
#ifdef HAVE_MEMCACHED_SASL
zend_bool has_sasl_data;
#endif
} php_memc_user_data_t;
typedef struct {
memcached_st *memc;
zend_bool is_pristine;
int rescode;
int memc_errno;
zend_object zo;
} php_memc_object_t;
typedef struct {
size_t num_valid_keys;
const char **mkeys;
size_t *mkeys_len;
zend_string **strings;
} php_memc_keys_t;
typedef struct {
zval *object;
zend_fcall_info fci;
zend_fcall_info_cache fcc;
} php_memc_result_callback_ctx_t;
static inline php_memc_object_t *php_memc_fetch_object(zend_object *obj) {
return (php_memc_object_t *)((char *)obj - XtOffsetOf(php_memc_object_t, zo));
}
#define Z_MEMC_OBJ_P(zv) php_memc_fetch_object(Z_OBJ_P(zv));
#define MEMC_METHOD_INIT_VARS \
zval* object = getThis(); \
php_memc_object_t* intern = NULL; \
php_memc_user_data_t* memc_user_data = NULL;
#define MEMC_METHOD_FETCH_OBJECT \
intern = Z_MEMC_OBJ_P(object); \
if (!intern->memc) { \
php_error_docref(NULL, E_WARNING, "Memcached constructor was not called"); \
return; \
} \
memc_user_data = (php_memc_user_data_t *) memcached_get_user_data(intern->memc); \
(void)memc_user_data; /* avoid unused variable warning */
static
zend_bool s_memc_valid_key_binary(zend_string *key)
{
return memchr(ZSTR_VAL(key), '\n', ZSTR_LEN(key)) == NULL;
}
static
zend_bool s_memc_valid_key_ascii(zend_string *key)
{
const char *str = ZSTR_VAL(key);
size_t i, len = ZSTR_LEN(key);
for (i = 0; i < len; i++) {
if (iscntrl(str[i]) || isspace(str[i]))
return 0;
}
return 1;
}
#define MEMC_CHECK_KEY(intern, key) \
if (UNEXPECTED(ZSTR_LEN(key) == 0 || \
ZSTR_LEN(key) > MEMC_OBJECT_KEY_MAX_LENGTH || \
(memcached_behavior_get(intern->memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL) \
? !s_memc_valid_key_binary(key) \
: !s_memc_valid_key_ascii(key) \
))) { \
intern->rescode = MEMCACHED_BAD_KEY_PROVIDED; \
RETURN_FALSE; \
}
#ifdef HAVE_MEMCACHED_PROTOCOL
typedef struct {
php_memc_proto_handler_t *handler;
zend_object zo;
} php_memc_server_t;
static inline php_memc_server_t *php_memc_server_fetch_object(zend_object *obj) {
return (php_memc_server_t *)((char *)obj - XtOffsetOf(php_memc_server_t, zo));
}
#define Z_MEMC_SERVER_P(zv) php_memc_server_fetch_object(Z_OBJ_P(zv))
static zend_object_handlers memcached_server_object_handlers;
static zend_class_entry *memcached_server_ce = NULL;
#endif
static zend_class_entry *memcached_ce = NULL;
static zend_class_entry *memcached_exception_ce = NULL;
static zend_class_entry *memcached_tls_context_config_ce = NULL;
static zend_object_handlers memcached_object_handlers;
#ifdef HAVE_SPL
static zend_class_entry *spl_ce_RuntimeException = NULL;
#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) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(ZSTR_VAL(new_value), "fastlz")) {
MEMC_G(compression_type) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(ZSTR_VAL(new_value), "zlib")) {
MEMC_G(compression_type) = COMPRESSION_TYPE_ZLIB;
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static PHP_INI_MH(OnUpdateSerializer)
{
if (!new_value) {
MEMC_G(serializer_type) = SERIALIZER_DEFAULT;
} else if (!strcmp(ZSTR_VAL(new_value), "php")) {
MEMC_G(serializer_type) = SERIALIZER_PHP;
#ifdef HAVE_MEMCACHED_IGBINARY
} else if (!strcmp(ZSTR_VAL(new_value), "igbinary")) {
MEMC_G(serializer_type) = SERIALIZER_IGBINARY;
#endif // IGBINARY
#ifdef HAVE_JSON_API
} else if (!strcmp(ZSTR_VAL(new_value), "json")) {
MEMC_G(serializer_type) = SERIALIZER_JSON;
} else if (!strcmp(ZSTR_VAL(new_value), "json_array")) {
MEMC_G(serializer_type) = SERIALIZER_JSON_ARRAY;
#endif // JSON
#ifdef HAVE_MEMCACHED_MSGPACK
} else if (!strcmp(ZSTR_VAL(new_value), "msgpack")) {
MEMC_G(serializer_type) = SERIALIZER_MSGPACK;
#endif // msgpack
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
#ifdef HAVE_MEMCACHED_SESSION
static
PHP_INI_MH(OnUpdateDeprecatedLockValue)
{
if (ZSTR_LEN(new_value) > 0 && strcmp(ZSTR_VAL(new_value), "not set")) {
php_error_docref(NULL, E_DEPRECATED, "memcached.sess_lock_wait and memcached.sess_lock_max_wait are deprecated. Please update your configuration to use memcached.sess_lock_wait_min, memcached.sess_lock_wait_max and memcached.sess_lock_retries");
}
return FAILURE;
}
static
PHP_INI_MH(OnUpdateSessionPrefixString)
{
if (new_value && ZSTR_LEN(new_value) > 0) {
if (ZSTR_LEN(new_value) > MEMCACHED_MAX_KEY) {
php_error_docref(NULL, E_WARNING, "memcached.sess_prefix too long (max: %d)", MEMCACHED_MAX_KEY - 1);
return FAILURE;
}
if (!s_memc_valid_key_ascii(new_value)) {
php_error_docref(NULL, E_WARNING, "memcached.sess_prefix cannot contain whitespace or control characters");
return FAILURE;
}
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
static
PHP_INI_MH(OnUpdateConsistentHash)
{
if (!new_value) {
MEMC_SESS_INI(consistent_hash_type) = MEMCACHED_BEHAVIOR_KETAMA;
} else if (!strcmp(ZSTR_VAL(new_value), "ketama")) {
MEMC_SESS_INI(consistent_hash_type) = MEMCACHED_BEHAVIOR_KETAMA;
} else if (!strcmp(ZSTR_VAL(new_value), "ketama_weighted")) {
MEMC_SESS_INI(consistent_hash_type) = MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED;
} else {
php_error_docref(NULL, E_WARNING, "memcached.sess_consistent_hash_type must be ketama or ketama_weighted");
return FAILURE;
}
return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
}
#endif // HAVE_MEMCACHED_SESSION
#define MEMC_INI_ENTRY(key, default_value, update_fn, gkey) \
STD_PHP_INI_ENTRY("memcached."key, default_value, PHP_INI_ALL, update_fn, memc.gkey, zend_php_memcached_globals, php_memcached_globals)
#define MEMC_INI_BOOL(key, default_value, update_fn, gkey) \
STD_PHP_INI_BOOLEAN("memcached."key, default_value, PHP_INI_ALL, update_fn, memc.gkey, zend_php_memcached_globals, php_memcached_globals)
#define MEMC_INI_LINK(key, default_value, update_fn, gkey) \
STD_PHP_INI_ENTRY_EX("memcached."key, default_value, PHP_INI_ALL, update_fn, memc.gkey, zend_php_memcached_globals, php_memcached_globals, display_link_numbers)
#define MEMC_SESSION_INI_ENTRY(key, default_value, update_fn, gkey) \
STD_PHP_INI_ENTRY("memcached.sess_"key, default_value, PHP_INI_ALL, update_fn, session.gkey, zend_php_memcached_globals, php_memcached_globals)
#define MEMC_SESSION_INI_BOOL(key, default_value, update_fn, gkey) \
STD_PHP_INI_BOOLEAN("memcached.sess_"key, default_value, PHP_INI_ALL, update_fn, session.gkey, zend_php_memcached_globals, php_memcached_globals)
#define MEMC_SESSION_INI_LINK(key, default_value, update_fn, gkey) \
STD_PHP_INI_ENTRY_EX("memcached.sess_"key, default_value, PHP_INI_ALL, update_fn, session.gkey, zend_php_memcached_globals, php_memcached_globals, display_link_numbers)
/* {{{ INI entries */
PHP_INI_BEGIN()
#ifdef HAVE_MEMCACHED_SESSION
MEMC_SESSION_INI_BOOL ("locking", "1", OnUpdateBool, lock_enabled)
MEMC_SESSION_INI_ENTRY("lock_wait_min", "150", OnUpdateLongGEZero, lock_wait_min)
MEMC_SESSION_INI_ENTRY("lock_wait_max", "150", OnUpdateLongGEZero, lock_wait_max)
MEMC_SESSION_INI_ENTRY("lock_retries", "5", OnUpdateLong, lock_retries)
MEMC_SESSION_INI_ENTRY("lock_expire", "0", OnUpdateLongGEZero, lock_expiration)
#if defined(LIBMEMCACHED_VERSION_HEX) && LIBMEMCACHED_VERSION_HEX < 0x01000018
MEMC_SESSION_INI_BOOL ("binary_protocol", "0", OnUpdateBool, binary_protocol_enabled)
#else
MEMC_SESSION_INI_BOOL ("binary_protocol", "1", OnUpdateBool, binary_protocol_enabled)
#endif
MEMC_SESSION_INI_BOOL ("consistent_hash", "1", OnUpdateBool, consistent_hash_enabled)
MEMC_SESSION_INI_ENTRY("consistent_hash_type", "ketama", OnUpdateConsistentHash, consistent_hash_name)
MEMC_SESSION_INI_ENTRY("number_of_replicas", "0", OnUpdateLongGEZero, number_of_replicas)
MEMC_SESSION_INI_BOOL ("randomize_replica_read", "0", OnUpdateBool, randomize_replica_read_enabled)
MEMC_SESSION_INI_BOOL ("remove_failed_servers", "0", OnUpdateBool, remove_failed_servers_enabled)
MEMC_SESSION_INI_ENTRY("server_failure_limit", "0", OnUpdateLongGEZero, server_failure_limit)
MEMC_SESSION_INI_LINK ("connect_timeout", "0", OnUpdateLong, connect_timeout)
MEMC_SESSION_INI_ENTRY("sasl_username", "", OnUpdateString, sasl_username)
MEMC_SESSION_INI_ENTRY("sasl_password", "", OnUpdateString, sasl_password)
MEMC_SESSION_INI_BOOL ("persistent", "0", OnUpdateBool, persistent_enabled)
MEMC_SESSION_INI_ENTRY("prefix", "memc.sess.key.", OnUpdateSessionPrefixString, prefix)
#if defined(HAVE_MEMCACHED_TLS)
MEMC_SESSION_INI_BOOL ("use_tls", "0", OnUpdateBool, tls_enabled)
MEMC_SESSION_INI_ENTRY("tls_cert_file", "", OnUpdateString, tls_cert_file)
MEMC_SESSION_INI_ENTRY("tls_key_file", "", OnUpdateString, tls_key_file)
MEMC_SESSION_INI_ENTRY("tls_key_file_pass", "", OnUpdateString, tls_key_file_pass)
MEMC_SESSION_INI_ENTRY("tls_ca_cert_file", "", OnUpdateString, tls_ca_cert_file)
MEMC_SESSION_INI_ENTRY("tls_ca_cert_dir", "", OnUpdateString, tls_ca_cert_dir)
MEMC_SESSION_INI_ENTRY("tls_hostname", "", OnUpdateString, tls_hostname)
MEMC_SESSION_INI_ENTRY("tls_protocol", "", OnUpdateString, tls_protocol)
MEMC_SESSION_INI_ENTRY("tls_ciphers", "", OnUpdateString, tls_ciphers)
MEMC_SESSION_INI_ENTRY("tls_ciphersuites", "", OnUpdateString, tls_ciphersuites)
MEMC_SESSION_INI_BOOL("tls_prefer_server_ciphers","0", OnUpdateBool, tls_prefer_server_ciphers)
MEMC_SESSION_INI_BOOL("tls_skip_cert_verify", "0", OnUpdateBool, tls_skip_cert_verify)
MEMC_SESSION_INI_BOOL("tls_skip_hostname_verify", "0", OnUpdateBool, tls_skip_hostname_verify)
#endif
/* Deprecated */
STD_PHP_INI_ENTRY("memcached.sess_lock_wait", "not set", PHP_INI_ALL, OnUpdateDeprecatedLockValue, no_effect, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_lock_max_wait", "not set", PHP_INI_ALL, OnUpdateDeprecatedLockValue, no_effect, zend_php_memcached_globals, php_memcached_globals)
#endif
MEMC_INI_ENTRY("compression_type", "fastlz", OnUpdateCompressionType, compression_name)
MEMC_INI_ENTRY("compression_factor", "1.3", OnUpdateReal, compression_factor)
MEMC_INI_ENTRY("compression_threshold", "2000", OnUpdateLong, compression_threshold)
MEMC_INI_ENTRY("serializer", SERIALIZER_DEFAULT_NAME, OnUpdateSerializer, serializer_name)
MEMC_INI_ENTRY("store_retry_count", "2", OnUpdateLong, store_retry_count)
MEMC_INI_BOOL ("default_consistent_hash", "0", OnUpdateBool, default_behavior.consistent_hash_enabled)
MEMC_INI_BOOL ("default_binary_protocol", "0", OnUpdateBool, default_behavior.binary_protocol_enabled)
MEMC_INI_LINK ("default_connect_timeout", "0", OnUpdateLong, default_behavior.connect_timeout)
#if defined(HAVE_MEMCACHED_TLS)
MEMC_INI_BOOL ("default_use_tls", "0", OnUpdateBool, default_behavior.tls_enabled)
#endif
PHP_INI_END()
/* }}} */
#undef MEMC_INI_BOOL
#undef MEMC_INI_LINK
#undef MEMC_INI_ENTRY
#undef MEMC_SESSION_INI_BOOL
#undef MEMC_SESSION_INI_LINK
#undef MEMC_SESSION_INI_ENTRY
/****************************************
Forward declarations
****************************************/
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);
/* Invoke PHP functions */
static zend_bool s_invoke_cache_callback(zval *zobject, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_bool with_cas, zend_string *key, zval *value);
/* Iterate result sets */
typedef zend_bool (*php_memc_result_apply_fn)(php_memc_object_t *intern, zend_string *key, zval *value, zval *cas, uint32_t flags, void *context);
static
memcached_return php_memc_result_apply(php_memc_object_t *intern, php_memc_result_apply_fn result_apply_fn, zend_bool fetch_delay, void *context);
static
zend_bool php_memc_mget_apply(php_memc_object_t *intern, zend_string *server_key,
php_memc_keys_t *keys, php_memc_result_apply_fn result_apply_fn,
zend_bool with_cas, void *context);
/* Callback functions for different server list iterations */
static
memcached_return s_server_cursor_list_servers_cb(const memcached_st *ptr, php_memcached_instance_st instance, void *in_context);
static
memcached_return s_server_cursor_version_cb(const memcached_st *ptr, php_memcached_instance_st instance, void *in_context);
static
zend_bool s_memc_write_zval (php_memc_object_t *intern, php_memc_write_op op, zend_string *server_key, zend_string *key, zval *value, time_t expiration);
static
void php_memc_destroy(memcached_st *memc, php_memc_user_data_t *memc_user_data);
static
zend_bool s_memcached_result_to_zval(memcached_st *memc, memcached_result_st *result, zval *return_value);
static
zend_string *s_zval_to_payload(php_memc_object_t *intern, zval *value, uint32_t *flags);
static
void s_hash_to_keys(php_memc_keys_t *keys_out, HashTable *hash_in, zend_bool preserve_order, zval *return_value);
static
void s_clear_keys(php_memc_keys_t *keys);
/****************************************
Exported helper functions
****************************************/
zend_bool php_memc_init_sasl_if_needed()
{
#ifdef HAVE_MEMCACHED_SASL
if (MEMC_G(sasl_initialised)) {
return 1;
}
if (sasl_client_init(NULL) != SASL_OK) {
php_error_docref(NULL, E_ERROR, "Failed to initialize SASL library");
return 0;
}
return 1;
#else
php_error_docref(NULL, E_ERROR, "Memcached not built with sasl support");
return 0;
#endif
}
char *php_memc_printable_func (zend_fcall_info *fci, zend_fcall_info_cache *fci_cache)
{
char *buffer = NULL;
if (fci->object) {
spprintf (&buffer, 0, "%s::%s", ZSTR_VAL(fci->object->ce->name), ZSTR_VAL(fci_cache->function_handler->common.function_name));
} else {
if (Z_TYPE (fci->function_name) == IS_OBJECT) {
spprintf (&buffer, 0, "%s", ZSTR_VAL(Z_OBJCE(fci->function_name)->name));
}
else {
spprintf (&buffer, 0, "%s", Z_STRVAL(fci->function_name));
}
}
return buffer;
}
/****************************************
Handling error codes
****************************************/
static
zend_bool s_memcached_return_is_error(memcached_return status, zend_bool strict)
{
zend_bool result = 0;
switch (status) {
case MEMCACHED_SUCCESS:
case MEMCACHED_STORED:
case MEMCACHED_DELETED:
case MEMCACHED_STAT:
case MEMCACHED_END:
case MEMCACHED_BUFFERED:
result = 0;
break;
case MEMCACHED_SOME_ERRORS:
result = strict;
break;
default:
result = 1;
break;
}
return result;
}
static
int s_memc_status_handle_result_code(php_memc_object_t *intern, memcached_return status)
{
intern->rescode = status;
intern->memc_errno = 0;
if (s_memcached_return_is_error(status, 1)) {
intern->memc_errno = memcached_last_error_errno(intern->memc);
return FAILURE;
}
return SUCCESS;
}
static
void s_memc_set_status(php_memc_object_t *intern, memcached_return status, int memc_errno)
{
intern->rescode = status;
intern->memc_errno = memc_errno;
}
static
zend_bool s_memc_status_has_error(php_memc_object_t *intern)
{
return s_memcached_return_is_error(intern->rescode, 1);
}
static
zend_bool s_memc_status_has_result_code(php_memc_object_t *intern, memcached_return status)
{
return intern->rescode == status;
}
/****************************************
Marshall cas tokens
****************************************/
static
void s_uint64_to_zval (zval *target, uint64_t value)
{
if (value >= ((uint64_t) LONG_MAX)) {
zend_string *buffer;
#ifdef PRIu64
buffer = strpprintf (0, "%" PRIu64, value);
#else
/* Best effort */
buffer = strpprintf (0, "%llu", value);
#endif
ZVAL_STR(target, buffer);
}
else {
ZVAL_LONG (target, (zend_long) value);
}
}
static
uint64_t s_zval_to_uint64 (zval *cas)
{
switch (Z_TYPE_P (cas)) {
case IS_LONG:
return (uint64_t) zval_get_long (cas);
break;
case IS_DOUBLE:
if (Z_DVAL_P (cas) < 0.0)
return 0;
return (uint64_t) zval_get_double (cas);
break;
case IS_STRING:
{
uint64_t val;
char *end;
errno = 0;
val = (uint64_t) strtoull (Z_STRVAL_P (cas), &end, 0);
if (*end || (errno == ERANGE && val == UINT64_MAX) || (errno != 0 && val == 0)) {
php_error_docref(NULL, E_ERROR, "Failed to unmarshall cas token");
return 0;
}
return val;
}
break;
}
return 0;
}
/****************************************
Iterate over memcached results and mget
****************************************/
static
memcached_return php_memc_result_apply(php_memc_object_t *intern, php_memc_result_apply_fn result_apply_fn, zend_bool fetch_delay, void *context)
{
memcached_result_st result, *result_ptr;
memcached_return rc, status = MEMCACHED_SUCCESS;
memcached_result_create(intern->memc, &result);
do {
result_ptr = memcached_fetch_result(intern->memc, &result, &rc);
if (s_memcached_return_is_error(rc, 0)) {
status = rc;
}
/* nothing returned */
if (!result_ptr) {
break;
}
else {
zend_string *key;
zval val, zcas;
zend_bool retval;
uint64_t cas;
uint32_t flags;
const char *res_key;
size_t res_key_len;
if (!s_memcached_result_to_zval(intern->memc, &result, &val)) {
if (EG(exception)) {
status = MEMC_RES_PAYLOAD_FAILURE;
memcached_quit(intern->memc);
break;
}
status = MEMCACHED_SOME_ERRORS;
continue;
}
res_key = memcached_result_key_value(&result);
res_key_len = memcached_result_key_length(&result);
cas = memcached_result_cas(&result);
flags = memcached_result_flags(&result);
s_uint64_to_zval(&zcas, cas);
key = zend_string_init (res_key, res_key_len, 0);
retval = result_apply_fn(intern, key, &val, &zcas, flags, context);
zend_string_release(key);
zval_ptr_dtor(&val);
zval_ptr_dtor(&zcas);
/* Stop iterating on false */
if (!retval) {
if (!fetch_delay) {
/* Make sure we clear our results */
while (memcached_fetch_result(intern->memc, &result, &rc)) {}
}
break;
}
}
} while (result_ptr != NULL);
memcached_result_free(&result);
return status;
}
static
zend_bool php_memc_mget_apply(php_memc_object_t *intern, zend_string *server_key, php_memc_keys_t *keys,
php_memc_result_apply_fn result_apply_fn, zend_bool with_cas, void *context)
{
memcached_return status;
int mget_status;
uint64_t orig_cas_flag = 0;
// Reset status code
s_memc_set_status(intern, MEMCACHED_SUCCESS, 0);
if (!keys->num_valid_keys) {
intern->rescode = MEMCACHED_BAD_KEY_PROVIDED;
return 0;
}
if (with_cas) {
orig_cas_flag = memcached_behavior_get (intern->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (!orig_cas_flag) {
memcached_behavior_set (intern->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
if (server_key) {
status = memcached_mget_by_key(intern->memc, ZSTR_VAL(server_key), ZSTR_LEN(server_key), keys->mkeys, keys->mkeys_len, keys->num_valid_keys);
} else {
status = memcached_mget(intern->memc, keys->mkeys, keys->mkeys_len, keys->num_valid_keys);
}
/* Need to handle result code before restoring cas flags, would mess up errno */
mget_status = s_memc_status_handle_result_code(intern, status);
if (with_cas && !orig_cas_flag) {
memcached_behavior_set (intern->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
/* Return on failure codes */
if (mget_status == FAILURE) {
return 0;
}
if (!result_apply_fn) {
/* no callback, for example getDelayed */
return 1;
}
status = php_memc_result_apply(intern, result_apply_fn, 0, context);
if (s_memc_status_handle_result_code(intern, status) == FAILURE) {
return 0;
}
return 1;
}
/****************************************
Invoke callbacks
****************************************/
static
zend_bool s_invoke_new_instance_cb(zval *object, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, zend_string *persistent_id)
{
zend_bool ret = 1;
zval retval;
zval params[2];
ZVAL_COPY(¶ms[0], object);
if (persistent_id) {
ZVAL_STR(¶ms[1], zend_string_copy(persistent_id));
} else {
ZVAL_NULL(¶ms[1]);
}
fci->retval = &retval;
fci->params = params;
fci->param_count = 2;
if (zend_call_function(fci, fci_cache) == FAILURE) {
char *buf = php_memc_printable_func (fci, fci_cache);
php_error_docref(NULL, E_WARNING, "Failed to invoke 'on_new' callback %s()", buf);
efree (buf);
ret = 0;
}
zval_ptr_dtor(¶ms[0]);
zval_ptr_dtor(¶ms[1]);
zval_ptr_dtor(&retval);
return ret;
}
static
zend_bool s_invoke_cache_callback(zval *zobject, zend_fcall_info *fci, zend_fcall_info_cache *fcc, zend_bool with_cas, zend_string *key, zval *value)
{
zend_bool status = 0;
zval params[4];
zval retval;
php_memc_object_t *intern = Z_MEMC_OBJ_P(zobject);
/* Prepare params */
ZVAL_COPY(¶ms[0], zobject);
ZVAL_STR_COPY(¶ms[1], key); /* key */
ZVAL_NEW_REF(¶ms[2], value); /* value */
if (with_cas) {
fci->param_count = 3;
} else {
ZVAL_NEW_EMPTY_REF(¶ms[3]); /* expiration */
ZVAL_NULL(Z_REFVAL(params[3]));
fci->param_count = 4;
}
fci->retval = &retval;
fci->params = params;
if (zend_call_function(fci, fcc) == SUCCESS) {
if (zend_is_true(&retval)) {
time_t expiration;
zval *val = Z_REFVAL(params[2]);
if (with_cas) {
if (Z_TYPE_P(val) == IS_ARRAY) {
zval *rv = zend_hash_str_find(Z_ARRVAL_P(val), "value", sizeof("value") - 1);
if (rv) {
zval *cas = zend_hash_str_find(Z_ARRVAL_P(val), "cas", sizeof("cas") -1);
expiration = cas? Z_LVAL_P(cas) : 0;
status = s_memc_write_zval (intern, MEMC_OP_SET, NULL, key, rv, expiration);
}
/* memleak? zval_ptr_dtor(value); */
ZVAL_COPY(value, val);
}
} else {
expiration = zval_get_long(Z_REFVAL(params[3]));
status = s_memc_write_zval (intern, MEMC_OP_SET, NULL, key, val, expiration);
/* memleak? zval_ptr_dtor(value); */
ZVAL_COPY(value, val);
}
}
}
else {
s_memc_set_status(intern, MEMCACHED_NOTFOUND, 0);
}
zval_ptr_dtor(¶ms[0]);
zval_ptr_dtor(¶ms[1]);
zval_ptr_dtor(¶ms[2]);
if (!with_cas) {
zval_ptr_dtor(¶ms[3]);
}
zval_ptr_dtor(&retval);
return status;
}
/****************************************
Wrapper for setting from zval
****************************************/
static
zend_bool s_compress_value (php_memc_compression_type compression_type, zend_string **payload_in, uint32_t *flags)
{
/* status */
zend_bool compress_status = 0;
zend_string *payload = *payload_in;
uint32_t compression_type_flag = 0;
/* Additional 5% for the data */
size_t buffer_size = (size_t) (((double) ZSTR_LEN(payload) * 1.05) + 1.0);
char *buffer = emalloc(buffer_size);
/* Store compressed size here */
size_t compressed_size = 0;
uint32_t original_size = ZSTR_LEN(payload);
switch (compression_type) {
case COMPRESSION_TYPE_FASTLZ:
{
compressed_size = fastlz_compress(ZSTR_VAL(payload), ZSTR_LEN(payload), buffer);
if (compressed_size > 0) {
compress_status = 1;
compression_type_flag = MEMC_VAL_COMPRESSION_FASTLZ;
}
}
break;
case COMPRESSION_TYPE_ZLIB:
{
compressed_size = buffer_size;
int status = compress((Bytef *) buffer, &compressed_size, (Bytef *) ZSTR_VAL(payload), ZSTR_LEN(payload));
if (status == Z_OK) {
compress_status = 1;
compression_type_flag = MEMC_VAL_COMPRESSION_ZLIB;
}
}
break;
default:
compress_status = 0;
break;
}
/* This means the value was too small to be compressed and ended up larger */
if (ZSTR_LEN(payload) <= (compressed_size * MEMC_G(compression_factor))) {
compress_status = 0;
}
/* Replace the payload with the compressed copy */
if (compress_status) {
MEMC_VAL_SET_FLAG(*flags, MEMC_VAL_COMPRESSED | compression_type_flag);
payload = zend_string_realloc(payload, compressed_size + sizeof(uint32_t), 0);
/* Copy the uin32_t at the beginning */
memcpy(ZSTR_VAL(payload), &original_size, sizeof(uint32_t));
memcpy(ZSTR_VAL(payload) + sizeof (uint32_t), buffer, compressed_size);
efree(buffer);
zend_string_forget_hash_val(payload);
*payload_in = payload;
return 1;
}
/* Original payload was not modified */
efree(buffer);
return 0;
}
static
zend_bool s_serialize_value (php_memc_serializer_type serializer, zval *value, smart_str *buf, uint32_t *flags)
{
switch (serializer) {
/*
Igbinary serialization
*/
#ifdef HAVE_MEMCACHED_IGBINARY
case SERIALIZER_IGBINARY:
{
uint8_t *buffer;
size_t buffer_len;
if (igbinary_serialize(&buffer, &buffer_len, value) != 0) {
php_error_docref(NULL, E_WARNING, "could not serialize value with igbinary");
return 0;
}
smart_str_appendl (buf, (char *)buffer, buffer_len);
efree(buffer);
MEMC_VAL_SET_TYPE(*flags, MEMC_VAL_IS_IGBINARY);
}
break;
#endif
/*
JSON serialization
*/
#ifdef HAVE_JSON_API
case SERIALIZER_JSON:
case SERIALIZER_JSON_ARRAY:
{
php_json_encode(buf, value, 0);
MEMC_VAL_SET_TYPE(*flags, MEMC_VAL_IS_JSON);
}
break;
#endif
/*
msgpack serialization
*/
#ifdef HAVE_MEMCACHED_MSGPACK
case SERIALIZER_MSGPACK:
php_msgpack_serialize(buf, value);
if (!buf->s) {
php_error_docref(NULL, E_WARNING, "could not serialize value with msgpack");
return 0;