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pinpoint_php.cpp
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pinpoint_php.cpp
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////////////////////////////////////////////////////////////////////////////////
// Copyright 2019 NAVER Corp
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License 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.
////////////////////////////////////////////////////////////////////////////////
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2017 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. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
/* $Id$ */
// clang-format off
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <iostream>
#include <string>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <stdio.h>
#include <cinttypes>
#include "zend_API.h"
#include "zend_string.h"
#include "zend_types.h"
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "common.h"
#include "php_pinpoint_php.h"
// clang-format on
#ifdef COMPILE_DL_PINPOINT_PHP
#ifdef ZTS
#if PHP_VERSION_ID >= 70000 && PHP_VERSION_ID < 80000
ZEND_TSRMLS_CACHE_DEFINE()
#else
#include "TSRM.h"
#endif
#endif
ZEND_GET_MODULE(pinpoint_php)
#endif
ZEND_DECLARE_MODULE_GLOBALS(pinpoint_php);
//static void pinpoint_log(char *msg);
// clang-format off
/* {{{ PHP_INI
*/
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("pinpoint_php.SendSpanTimeOutMs", "0", PHP_INI_ALL,
OnUpdateLong, w_timeout_ms, zend_pinpoint_php_globals,
pinpoint_php_globals)
STD_PHP_INI_ENTRY("pinpoint_php.CollectorHost", "unix:/tmp/collector.sock",
PHP_INI_ALL, OnUpdateString, co_host,
zend_pinpoint_php_globals, pinpoint_php_globals)
STD_PHP_INI_ENTRY("pinpoint_php.UnitTest", "no", PHP_INI_ALL, OnUpdateBool,
utest_flag, zend_pinpoint_php_globals, pinpoint_php_globals)
STD_PHP_INI_ENTRY("pinpoint_php.TraceLimit", "-1", PHP_INI_ALL, OnUpdateLong,
tracelimit, zend_pinpoint_php_globals, pinpoint_php_globals)
STD_PHP_INI_ENTRY("pinpoint_php.DebugReport", "no", PHP_INI_ALL, OnUpdateBool,
debug_report, zend_pinpoint_php_globals, pinpoint_php_globals)
PHP_INI_END()
/* }}} */
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_id_key_value, 0, 0, 2)
ZEND_ARG_INFO(0, key)
ZEND_ARG_INFO(0, value)
ZEND_ARG_INFO(0, nodeid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_id_key_value_flag, 0, 0, 2)
ZEND_ARG_INFO(0, key)
ZEND_ARG_INFO(0, value)
ZEND_ARG_INFO(0, nodeid)
ZEND_ARG_INFO(0, flag)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_join_cb_cb_cb, 0, 0, 4)
ZEND_ARG_INFO(0, joinable)
ZEND_ARG_INFO(0, onBefore)
ZEND_ARG_INFO(0, onEnd)
ZEND_ARG_INFO(0, onException)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_msg_filename_lineno_id, 0, 0, 2)
ZEND_ARG_INFO(0, msg)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(0, lineno)
ZEND_ARG_INFO(0, nodeid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_timestamp, 0, 0, 0)
ZEND_ARG_INFO(0, timestamp)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_arg_index, 0, 0, 0)
ZEND_ARG_INFO(0, index)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_id, 0, 0, 0)
ZEND_ARG_INFO(0, nodeid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_add_id_value, 0, 0, 1)
ZEND_ARG_INFO(0, key)
ZEND_ARG_INFO(0, nodeid)
ZEND_END_ARG_INFO()
// php5 needs (0,0,0)
ZEND_BEGIN_ARG_INFO_EX(arginfo_none, 0, 0, 0)
ZEND_END_ARG_INFO()
/* {{{ pinpioint_php_functions[]
*
* Every user visible function must have an entry in pinpioint_php_functions[].
*/
const zend_function_entry pinpoint_php_functions[] = {
PHP_FE(_pinpoint_start_trace, arginfo_add_id)
PHP_FE(_pinpoint_end_trace, arginfo_add_id)
PHP_FE(_pinpoint_unique_id, arginfo_none)
PHP_FE(pinpoint_get_this, arginfo_none)
PHP_FE(pinpoint_get_caller_arg,arginfo_add_arg_index)
PHP_FE(pinpoint_status, arginfo_none)
// PHP__FE(pinpoint_get_func_ref_args, arginfo_none)
PHP_FE(_pinpoint_drop_trace, arginfo_add_id)
PHP_FE(_pinpoint_start_time, arginfo_none)
PHP_FE(_pinpoint_set_context, arginfo_add_id_key_value)
PHP_FE(_pinpoint_get_context, arginfo_add_id_value)
PHP_FE(_pinpoint_trace_limit, arginfo_add_timestamp)
PHP_FE(_pinpoint_mark_as_error, arginfo_add_msg_filename_lineno_id)
PHP_FE(_pinpoint_add_clue, arginfo_add_id_key_value_flag)
PHP_FE(_pinpoint_add_clues, arginfo_add_id_key_value_flag)
PHP_FE(_pinpoint_join_cut,arginfo_add_join_cb_cb_cb)
PHP_FE_END /* Must be the last line in pinpioint_php_functions[] */
};
/* }}} */
// clang-format on
/* {{{ pinpioint_php_module_entry
*/
zend_module_entry pinpoint_php_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#endif
"pinpoint_php",
pinpoint_php_functions,
PHP_MINIT(pinpoint_php),
PHP_MSHUTDOWN(pinpoint_php),
PHP_RINIT(pinpoint_php), /* Replace with NULL if there's nothing to do at
request start */
PHP_RSHUTDOWN(pinpoint_php), /* Replace with NULL if there's nothing to do
at request end */
PHP_MINFO(pinpoint_php),
#if ZEND_MODULE_API_NO >= 20010901
PHP_PINPOINT_PHP_VERSION,
#endif
STANDARD_MODULE_PROPERTIES};
/* }}} */
#if PHP_VERSION_ID >= 80100
void (*old_error_cb)(int type, zend_string *error_filename,
const uint32_t error_lineno, zend_string *message);
#elif PHP_VERSION_ID >= 80000
void (*old_error_cb)(int type, const char *error_filename,
const uint32_t error_lineno, zend_string *message);
#else
void (*old_error_cb)(int type, const char *error_filename,
const uint32_t error_lineno, const char *format,
va_list args);
#endif
#define safe_free(x) \
if ((x)) { \
free((x)); \
(x) = NULL; \
}
PHP_FUNCTION(_pinpoint_drop_trace) {
NodeID id = E_ROOT_NODE;
#if PHP_VERSION_ID < 70000
size_t _id = -1;
zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &_id);
#else
zend_long _id = -1;
zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &_id);
#endif
if (_id == -1) {
id = pinpoint_get_per_thread_id();
} else {
id = (NodeID)_id;
}
change_trace_status(id, E_TRACE_BLOCK);
RETURN_TRUE;
}
PHP_FUNCTION(pinpoint_get_this) {
if (EX(prev_execute_data) && EX(prev_execute_data)->prev_execute_data) {
zval *self = &EX(prev_execute_data)->prev_execute_data->This;
if (zval_get_type(self) != IS_UNDEF) {
RETURN_ZVAL(self, 1, 0);
}
}
pp_trace("pinpoint_get_this: not support, no this");
RETURN_FALSE;
}
PHP_FUNCTION(_pinpoint_set_context) {
std::string key;
zval *zvalue;
#if PHP_VERSION_ID < 70000
char *zkey = NULL;
int zkey_len;
size_t _id = -1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|l", &zkey, &zkey_len,
&zvalue, &_id) == FAILURE) {
zend_error(E_ERROR, "key/value required");
return;
}
key = std::string(zkey, zkey_len);
#else
zend_long _id = -1;
zend_string *zkey;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "Sz|l", &zkey, &zvalue, &_id) ==
FAILURE) {
zend_error(E_ERROR, "key/value required");
return;
}
key = std::string(zkey->val, zkey->len);
#endif
if (_id == -1) {
_id = pinpoint_get_per_thread_id();
}
switch (Z_TYPE_P(zvalue)) {
// case IS_LONG:
// pinpoint_set_context_long(_id,key.c_str(),Z_LVAL_P(zvalue));
// break;
case IS_STRING: {
std::string value(Z_STRVAL_P(zvalue), Z_STRLEN_P(zvalue));
pinpoint_set_context_key((NodeID)_id, key.c_str(), value.c_str());
} break;
default:
zend_error(E_WARNING, "value only support string");
return;
}
RETURN_TRUE;
}
// ref from ZEND_FUNCTION(func_get_arg)
PHP_FUNCTION(pinpoint_get_caller_arg) {
uint32_t arg_count, first_extra_arg;
zval *arg;
zend_long requested_offset;
zend_execute_data *ex;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &requested_offset) ==
FAILURE) {
return;
}
if (requested_offset < 0) {
zend_error(
E_WARNING,
"pinpoint_get_caller_arg(): The argument number should be >= 0");
RETURN_FALSE;
}
// changes
// ex = EX(prev_execute_data)
ex = EX(prev_execute_data)->prev_execute_data;
if (ZEND_CALL_INFO(ex) & ZEND_CALL_CODE) {
zend_error(E_WARNING, "pinpoint_get_caller_arg(): Called from the global "
"scope - no function context");
RETURN_FALSE;
}
#if PHP_MAJOR_VERSION == 8 && PHP_MINOR_VERSION >= 2
if (zend_forbid_dynamic_call() == FAILURE) {
RETURN_THROWS();
}
#else
if (zend_forbid_dynamic_call("pinpoint_get_caller_arg()") == FAILURE) {
RETURN_FALSE;
}
#endif
arg_count = ZEND_CALL_NUM_ARGS(ex);
if ((zend_ulong)requested_offset >= arg_count) {
zend_error(E_WARNING,
"pinpoint_get_caller_arg(): Argument "
"%" PRId64 " not passed to function",
requested_offset);
RETURN_FALSE;
}
// ZEND_LONG_FMT
first_extra_arg = ex->func->op_array.num_args;
if ((zend_ulong)requested_offset >= first_extra_arg &&
(ZEND_CALL_NUM_ARGS(ex) > first_extra_arg)) {
arg = ZEND_CALL_VAR_NUM(ex, ex->func->op_array.last_var +
ex->func->op_array.T) +
(requested_offset - first_extra_arg);
} else {
arg = ZEND_CALL_ARG(ex, requested_offset + 1);
}
if (EXPECTED(!Z_ISUNDEF_P(arg))) {
#if PHP_MAJOR_VERSION == 7 && PHP_MINOR_VERSION <= 2
ZVAL_DEREF(arg);
ZVAL_COPY(return_value, arg);
#else
ZVAL_COPY_DEREF(return_value, arg);
#endif
}
}
PHP_FUNCTION(_pinpoint_get_context) {
std::string key;
#if PHP_VERSION_ID < 70000
long _id = -1;
char *zkey = NULL;
size_t zkey_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|l", &zkey, &zkey_len,
&_id) == FAILURE) {
zend_error(E_ERROR, "key/value required");
return;
}
key = std::string(zkey, zkey_len);
#else
zend_string *zkey;
zend_long _id = -1;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|l", &zkey, &_id) == FAILURE) {
zend_error(E_ERROR, "key/value required");
return;
}
key = std::string(zkey->val, zkey->len);
#endif
if (_id == -1) {
_id = pinpoint_get_per_thread_id();
}
char value[1024] = {0};
int len = pinpoint_get_context_key((NodeID)_id, key.c_str(), value, 1024);
if (len > 0) {
#if PHP_VERSION_ID < 70000
RETURN_STRINGL(value, len, 1);
#else
RETURN_STRINGL(value, len);
#endif
} else {
RETURN_FALSE;
}
}
PHP_FUNCTION(_pinpoint_start_time) {
RETURN_DOUBLE(static_cast<double>(pinpoint_start_time()));
}
PHP_FUNCTION(_pinpoint_start_trace) {
NodeID id = E_ROOT_NODE, cur_id = E_ROOT_NODE;
#if PHP_VERSION_ID < 70000
long _id = -1;
zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &_id);
#else
zend_long _id = -1;
zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &_id);
#endif
if (_id == -1) {
id = pinpoint_get_per_thread_id();
cur_id = pinpoint_start_trace(id);
pinpoint_update_per_thread_id(cur_id);
RETURN_LONG((long)cur_id);
} else {
id = (NodeID)_id;
cur_id = pinpoint_start_trace(id);
RETURN_LONG((long)cur_id);
}
}
#if PHP_VERSION_ID >= 80100
void apm_error_cb(int type, zend_string *_error_filename,
const uint32_t error_lineno, zend_string *_message) {
char *error_filename = _error_filename->val;
char *msg = _message->val;
#elif PHP_VERSION_ID >= 80000
void apm_error_cb(int type, const char *_error_filename,
const uint32_t error_lineno, zend_string *_message) {
char *msg = _message->val;
const char *error_filename = _error_filename;
#else
void apm_error_cb(int type, const char *error_filename,
const uint32_t error_lineno, const char *format,
va_list args) {
char *msg;
va_list args_copy;
#if PHP_VERSION_ID < 80000
TSRMLS_FETCH();
#endif
va_copy(args_copy, args);
vspprintf(&msg, 0, format, args_copy);
va_end(args_copy);
#endif
if (!(EG(error_reporting) & type)) {
#if PHP_VERSION_ID < 80000
efree(msg);
#endif
return;
}
catch_error(pinpoint_get_per_thread_id(), msg, error_filename, error_lineno);
pp_trace("apm_error_cb called");
#if PHP_VERSION_ID < 80000
efree(msg);
/// call origin cb
old_error_cb(type, error_filename, error_lineno, format, args);
#else
old_error_cb(type, _error_filename, error_lineno, _message);
#endif
}
PHP_FUNCTION(_pinpoint_end_trace) {
NodeID id = E_ROOT_NODE, cur_id = E_ROOT_NODE;
#if PHP_VERSION_ID < 70000
long _id = -1;
zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &_id);
#else
zend_long _id = -1;
zend_parse_parameters(ZEND_NUM_ARGS(), "|l", &_id);
#endif
if (_id == -1) {
id = pinpoint_get_per_thread_id();
cur_id = pinpoint_end_trace(id);
pinpoint_update_per_thread_id(cur_id);
RETURN_LONG((long)cur_id);
} else {
id = (NodeID)_id;
cur_id = pinpoint_end_trace(id);
RETURN_LONG((long)cur_id);
}
}
PHP_FUNCTION(pinpoint_status) { show_status(); }
PHP_FUNCTION(_pinpoint_add_clue) {
std::string key;
std::string value;
#if PHP_VERSION_ID < 70000
char *zkey = NULL, *zvalue = NULL;
int zkey_len, value_len;
long _id = -1;
long _flag = E_LOC_CURRENT;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|ll", &zkey,
&zkey_len, &zvalue, &value_len, &_id,
&_flag) == FAILURE) {
zend_error(E_ERROR, "pinpoint_add_clue() expects (int, string).");
return;
}
key = std::string(zkey, zkey_len);
value = std::string(zvalue, value_len);
#else
zend_string *zkey = nullptr;
zend_string *zvalue = nullptr;
zend_long _id = -1;
zend_long _flag = E_LOC_CURRENT;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS|ll", &zkey, &zvalue, &_id,
&_flag) == FAILURE) {
zend_error(E_ERROR, "pinpoint_add_clue() expects (int, string).");
return;
}
key = std::string(zkey->val, zkey->len);
value = std::string(zvalue->val, zvalue->len);
#endif
NodeID Id = (_id == -1) ? (pinpoint_get_per_thread_id()) : ((NodeID)_id);
pinpoint_add_clue(Id, key.c_str(), value.c_str(), (E_NODE_LOC)_flag);
}
PHP_FUNCTION(_pinpoint_unique_id) {
RETURN_DOUBLE(static_cast<double>(generate_unique_id()));
}
PHP_FUNCTION(_pinpoint_mark_as_error) {
std::string msg;
std::string fileName;
#if PHP_VERSION_ID < 70000
char *zkey = NULL, *zvalue = NULL;
int zkey_len, value_len;
long _lineno = 0;
long _id = -1;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|ll", &zkey,
&zkey_len, &zvalue, &value_len, &_lineno,
&_id) == FAILURE) {
zend_error(E_ERROR,
"pinpoint_mark_as_error() expects (string,string,int,int).");
return;
}
msg = std::string(zkey, zkey_len);
fileName = std::string(zvalue, value_len);
#else
zend_string *zkey;
zend_string *zvalue;
zend_long _lineno = 0;
zend_long _id = -1;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS|ll", &zkey, &zvalue, &_lineno,
&_id) == FAILURE) {
zend_error(E_ERROR,
"pinpoint_mark_as_error() expects (string,string,int,int).");
return;
}
msg = std::string(zkey->val, zkey->len);
fileName = std::string(zvalue->val, zvalue->len);
#endif
NodeID id = (_id == -1) ? (pinpoint_get_per_thread_id()) : ((NodeID)_id);
catch_error(id, msg.c_str(), fileName.c_str(), _lineno);
}
PHP_FUNCTION(_pinpoint_add_clues) {
std::string key;
std::string value;
#if PHP_VERSION_ID < 70000
long _id = -1;
long _flag = E_LOC_CURRENT;
char *zkey = NULL, *zvalue = NULL;
size_t zkey_len, value_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|ll", &zkey,
&zkey_len, &zvalue, &value_len, &_id,
&_flag) == FAILURE) {
zend_error(E_ERROR, "pinpoint_add_clues() expects (int, string).");
return;
}
key = std::string(zkey, zkey_len);
value = std::string(zvalue, value_len);
#else
zend_string *zkey;
zend_string *zvalue;
zend_long _id = -1;
zend_long _flag = E_LOC_CURRENT;
int ret = zend_parse_parameters(ZEND_NUM_ARGS(), "SS|ll", &zkey, &zvalue,
&_id, &_flag);
if (ret == FAILURE) {
zend_error(E_ERROR, "pinpoint_add_clues() expects (int, string).");
return;
}
key = std::string(zkey->val, zkey->len);
value = std::string(zvalue->val, zvalue->len);
#endif
NodeID id = (_id == -1) ? (pinpoint_get_per_thread_id()) : ((NodeID)_id);
pinpoint_add_clues(id, key.c_str(), value.c_str(), (E_NODE_LOC)_flag);
}
static inline zend_string *merge_pp_style_name(zend_string *scope,
zend_string *func) {
#define MAX_CLASS_METHOD_SIZE 128
char buf[MAX_CLASS_METHOD_SIZE] = {0};
if (scope) {
int size = snprintf(buf, MAX_CLASS_METHOD_SIZE, "%s::%s", ZSTR_VAL(scope),
ZSTR_VAL(func));
zend_string *name = zend_string_init(buf, size, 0);
zend_string *lower_name = zend_string_tolower(name);
zend_string_release(name);
return lower_name;
} else {
return zend_string_tolower(func);
}
}
#if (PHP_MAJOR_VERSION == 8 && PHP_MINOR_VERSION >= 2)
// ref from php-8.2.19/ext/standard/var.c:137
static zval *zend_array_index(zval *ar, uint32_t index) {
HashTable *__ht = Z_ARRVAL_P(ar);
uint32_t _idx = 0;
uint32_t _count = __ht->nNumUsed - _idx;
size_t _size = ZEND_HASH_ELEMENT_SIZE(__ht);
zval *__z = ZEND_HASH_ELEMENT_EX(__ht, _idx, _size);
zval *ret_zval = nullptr;
for (; _count > 0 && _idx < index; _count--) {
ret_zval = __z;
if (HT_IS_PACKED(__ht)) {
__z++;
} else {
Bucket *_p = (Bucket *)__z;
__z = &(_p + 1)->val;
}
_idx++;
}
return ret_zval;
}
#else
// ref from php-8.1.25/ext/standard/var.c:137
static zval *zend_array_index(zval *ar, int index) {
HashTable *__ht = Z_ARRVAL_P(ar);
Bucket *_p = __ht->arData;
Bucket *_end = _p + __ht->nNumUsed;
zval *val;
for (int i = 0; i < index && _p != _end; _p++, i++) {
val = &_p->val;
}
return val;
}
#endif
static inline pp_interceptor_v_t *find_interceptor(zend_string *func_name) {
return (pp_interceptor_v_t *)zend_hash_str_find_ptr(
PPG(interceptors), ZSTR_VAL(func_name), ZSTR_LEN(func_name));
}
static zend_string *
get_pp_style_function_name(zend_execute_data *execute_data) {
zend_function *func = execute_data->func;
zend_object *object = (Z_TYPE(execute_data->This) == IS_OBJECT)
? Z_OBJ(execute_data->This)
: NULL;
#if PHP_MAJOR_VERSION == 8
zend_string *function_name = NULL;
if (func) {
function_name = func->common.function_name;
}
#else
zend_string *function_name =
(func->common.scope && func->common.scope->trait_aliases)
? zend_resolve_method_name((object ? object->ce : func->common.scope),
func)
: func->common.function_name;
#endif
if (object) {
zend_string *scope_name;
if (func->common.scope) {
scope_name = func->common.scope->name;
#if PHP_MAJOR_VERSION == 7 && PHP_MINOR_VERSION <= 2
} else if (object->handlers->get_class_name ==
std_object_handlers.get_class_name) {
#else
} else if (object->handlers->get_class_name == zend_std_get_class_name) {
#endif
scope_name = object->ce->name;
} else {
scope_name = object->handlers->get_class_name(object);
}
return merge_pp_style_name(scope_name, function_name);
} else if (func->common.scope) {
zend_string *scope = func->common.scope->name;
return merge_pp_style_name(scope, function_name);
} else {
return merge_pp_style_name(nullptr, function_name);
}
}
static void call_callback_function(zval *callback, zval *params,
uint32_t params_count, int free_params,
zval *needs_retval = nullptr) {
// ref SAPI.c:139
int error;
zend_fcall_info fcall_info;
char *callback_error = NULL;
zval default_retval;
zval *retval = &default_retval;
if (needs_retval) {
retval = needs_retval;
}
zend_fcall_info_cache fcall_cache;
if (zend_fcall_info_init(callback, 0, &fcall_info, &fcall_cache, NULL,
&callback_error) == SUCCESS) {
fcall_info.retval = retval;
fcall_info.param_count = params_count;
fcall_info.params = params;
fcall_info.object = NULL;
#if PHP_MAJOR_VERSION == 7
fcall_info.no_separation = 0;
#endif
// fcall_cache.initialized = 1;
// fcall_cache.function_handler = EG(autoload_func);
fcall_cache.called_scope = NULL;
fcall_cache.object = NULL;
error = zend_call_function(&fcall_info, &fcall_cache);
if (error == FAILURE) {
goto callback_failed;
} else {
if (!needs_retval) {
zval_ptr_dtor(retval);
}
}
} else {
callback_failed:
php_error_docref(NULL, E_WARNING,
"Could not call the pinpoint_join_cut callback");
}
if (callback_error) {
efree(callback_error);
}
if (free_params) {
zend_fcall_info_args_clear(&fcall_info, 1);
}
}
static void get_shadow_copy_current_parameters(int param_count,
zval *argument_array) {
// ref zend_API.c:46
// _zend_get_parameters_array_ex
zval *param_ptr;
param_ptr = ZEND_CALL_ARG(EG(current_execute_data), 1);
while (param_count-- > 0) {
ZVAL_COPY(argument_array, param_ptr);
argument_array++;
param_ptr++;
}
}
static void replace_ex_caller_parameters(zval *argv) {
if (zval_get_type(argv) != IS_ARRAY) {
pp_trace("replace_ex_caller_parameters return value must be `an array`");
return;
}
uint32_t size = zend_array_count(Z_ARRVAL_P(argv));
pp_trace("argv size:%d", size);
uint32_t param_count = ZEND_CALL_NUM_ARGS(EG(current_execute_data));
if (size != param_count) {
pp_trace(
"error: replace_ex_caller_parameters return `size` does not matched");
return;
}
uint32_t i = 0;
zval *ex_param_ptr = ZEND_CALL_ARG(EG(current_execute_data), 1);
// check old and new
while (i < size) {
zval *val = zend_array_index(argv, i + 1);
if (Z_TYPE_P(ex_param_ptr) != Z_TYPE_P(val)) {
pp_trace("error: replace_ex_caller_parameters return `type` does not "
"matched "
"expected:%d give:%d",
Z_TYPE_P(ex_param_ptr), Z_TYPE_P(val));
return;
}
i++;
ex_param_ptr++;
}
i = 0;
ex_param_ptr = ZEND_CALL_ARG(EG(current_execute_data), 1);
while (i < size) {
zval *val = zend_array_index(argv, i + 1);
if (Z_TYPE_P(val) == IS_ARRAY) {
pp_trace("args[%d] type:%d in:%u va:%u", i, zval_get_type(val),
Z_REFCOUNT_P(val), Z_REFCOUNT_P(ex_param_ptr));
}
zval_ptr_dtor(ex_param_ptr);
ZVAL_COPY(ex_param_ptr, val);
i++;
ex_param_ptr++;
}
}
static void call_interceptor_before(pp_interceptor_v_t *interceptor) {
uint32_t param_count = ZEND_CALL_NUM_ARGS(EG(current_execute_data));
zval *params = (zval *)safe_emalloc(param_count, sizeof(zval), 0);
get_shadow_copy_current_parameters(param_count, params);
zval retval;
call_callback_function(&interceptor->before, params, param_count, 1, &retval);
pp_trace(" call_interceptor_before:%s return type(%d) zval",
ZSTR_VAL(interceptor->name), zval_get_type(&retval));
replace_ex_caller_parameters(&retval);
zval_ptr_dtor(&retval);
}
static void call_interceptor_end(pp_interceptor_v_t *interceptor,
zval *return_value) {
uint32_t param_count = 1;
zval *params = (zval *)safe_emalloc(param_count, sizeof(zval), 0);
ZVAL_COPY(params, return_value);
call_callback_function(&interceptor->end, params, param_count, 1);
pp_trace("call_interceptor_end: %s ", ZSTR_VAL(interceptor->name));
}
static void call_interceptor_exception(pp_interceptor_v_t *interceptor) {
zend_object *exception = EG(exception);
pp_trace(" exception: %p ", exception);
}
ZEND_NAMED_FUNCTION(pinpoint_interceptor_handler_entry) {
// 1. get function/method name
// ref zend_builtin_functions.c:2278
zend_string *function_name = get_pp_style_function_name(execute_data);
pp_trace("pinpoint_interceptor_handler_entry: handle func/method:%s",
ZSTR_VAL(function_name));
pp_interceptor_v_t *interceptor = find_interceptor(function_name);
zend_string_release(function_name);
if (interceptor == nullptr) {
pp_trace(" MUST be a bug 🐞🐞🐞 !!! please send us "
"email@[email protected]");
return;
}
// 2. call before
// 3. call origin
// 4. call end
// 5. call exception if catch
zend_try {
call_interceptor_before(interceptor);
interceptor->origin(INTERNAL_FUNCTION_PARAM_PASSTHRU);
call_interceptor_end(interceptor, return_value);
}
zend_catch {
call_interceptor_exception(interceptor);
call_interceptor_end(interceptor, return_value);
}
zend_end_try();
}
static pp_interceptor_v_t *make_interceptor(zend_string *name, zval *before,
zval *end, zval *exception,
zend_function *origin_func) {
pp_interceptor_v_t *interceptor =
(pp_interceptor_v_t *)malloc(sizeof(pp_interceptor_v_t));
// bzero(interceptor, sizeof(*interceptor));
memset(interceptor, 0, sizeof(*interceptor));
interceptor->name = zend_string_dup(name, 0);
interceptor->origin = origin_func->internal_function.handler;
interceptor->origin_func = origin_func;
ZVAL_DUP(&interceptor->before, before);
ZVAL_DUP(&interceptor->end, end);
ZVAL_DUP(&interceptor->exception, exception);
return interceptor;
}
static inline void free_callback(zval *val) {
if (Z_TYPE_P(val) != IS_UNDEF) {
zval_ptr_dtor(val);
}
}
static void free_interceptor(pp_interceptor_v_t *interceptor) {
pp_trace("start free interceptor: %s", ZSTR_VAL(interceptor->name));
zend_function *origin_func = interceptor->origin_func;
origin_func->internal_function.handler = interceptor->origin;
zend_string_release(interceptor->name);
free_callback(&interceptor->before);
free_callback(&interceptor->end);
free_callback(&interceptor->exception);
free(interceptor);
}
static void add_function_interceptor(zend_string *name, zval *before, zval *end,
zval *exception) {
zend_function *func = (zend_function *)zend_hash_str_find_ptr(
CG(function_table), ZSTR_VAL(name), ZSTR_LEN(name));
if (func != NULL &&
func->internal_function.handler == pinpoint_interceptor_handler_entry) {
pp_trace("function `%s` interceptor already added", ZSTR_VAL(name));
} else if (func != NULL) {
pp_interceptor_v_t *interceptor =
make_interceptor(name, before, end, exception, func);
// insert into hash
if (!zend_hash_add_ptr(PPG(interceptors), name, interceptor)) {
free_interceptor(interceptor);
pp_trace("added interceptor on `function`: %s failed. reason: already "
"exist ",
ZSTR_VAL(name));
return;
}
func->internal_function.handler = pinpoint_interceptor_handler_entry;
pp_trace("added interceptor on `function`: %s success", ZSTR_VAL(name));
} else {
pp_trace("not found function: %s", ZSTR_VAL(name));
}
}
static void add_class_method_interceptor(zend_string *cls_name,
zend_string *method, zval *before,
zval *end, zval *exception) {
zend_class_entry *module = (zend_class_entry *)zend_hash_str_find_ptr(
CG(class_table), ZSTR_VAL(cls_name), ZSTR_LEN(cls_name));
if (module != NULL) {
zend_function *original = (zend_function *)zend_hash_str_find_ptr(
&module->function_table, ZSTR_VAL(method), ZSTR_LEN(method));
if (original != NULL) {
// overwrite with plugins eg: pinpoint_pdo_exec
#define MAX_CLASS_METHOD_SIZE 128
char buf[MAX_CLASS_METHOD_SIZE] = {0};
int size = snprintf(buf, MAX_CLASS_METHOD_SIZE, "%s::%s",
ZSTR_VAL(cls_name), ZSTR_VAL(method));
zend_string *name = zend_string_init(buf, size, 0);
pp_interceptor_v_t *interceptor =
make_interceptor(name, before, end, exception, original);
if (!zend_hash_add_ptr(PPG(interceptors), name, interceptor)) {
free_interceptor(interceptor);
pp_trace("added interceptor on `module`: %s failed. reason: already "
"exist ",
ZSTR_VAL(name));
zend_string_release(name);
return;
}
original->internal_function.handler = pinpoint_interceptor_handler_entry;
pp_trace("added interceptor on `module`: %s success", ZSTR_VAL(name));
zend_string_release(name);
} else {
pp_trace("add interceptor on `module`: %s::%s failed: no such method",
ZSTR_VAL(cls_name), ZSTR_VAL(method));
}
} else {
pp_trace("add interceptor on `module`: %s failed: no such module",
ZSTR_VAL(cls_name));
// debug CG(class_table)
// zend_class_entry *ce;
// void *val;
// ZEND_HASH_FOREACH_PTR(CG(class_table), val) {
// zend_class_entry *ce = (zend_class_entry *)val;
// pp_trace("key:%s name: %s", ZSTR_VAL(_p->key), ZSTR_VAL(ce->name));
// // if (ce->type == ZEND_INTERNAL_CLASS &&
// // ce->default_static_members_count > 0) {
// // class_cleanup_handlers[--class_count] = ce;
// // }
// }
// ZEND_HASH_FOREACH_END();
}
}
static void add_interceptor(zval *joinable, zval *before, zval *end,
zval *exception) {
uint32_t join_type = zend_hash_num_elements(Z_ARRVAL_P(joinable));
switch (join_type) {
case 2: {
zval *v = zend_array_index(joinable, 1);
zend_string *module = zend_string_tolower(Z_STR_P(v));
v = zend_array_index(joinable, 2);
zend_string *method = zend_string_tolower(Z_STR_P(v));
pp_trace("try to interceptor module(class)/function=%s:%s",
ZSTR_VAL(module), ZSTR_VAL(method));