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php-src/sapi/phpdbg/phpdbg_print.c
Dmitry Stogov 6499162ff0 - get rid of EG(scope). zend_get_executed_scope() should be used instead. 
- ichanged zval_update_constant_ex(). Use IS_TYPE_IMMUTABLE flag on shared constants and AST, instead of "inline_change" parameter.
2016-04-28 04:13:34 +03:00

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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 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: Felipe Pena <felipe@php.net> |
| Authors: Joe Watkins <joe.watkins@live.co.uk> |
| Authors: Bob Weinand <bwoebi@php.net> |
+----------------------------------------------------------------------+
*/
#include "phpdbg.h"
#include "phpdbg_print.h"
#include "phpdbg_utils.h"
#include "phpdbg_opcode.h"
#include "phpdbg_prompt.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg)
#define PHPDBG_PRINT_COMMAND_D(f, h, a, m, l, s, flags) \
PHPDBG_COMMAND_D_EXP(f, h, a, m, l, s, &phpdbg_prompt_commands[8], flags)
const phpdbg_command_t phpdbg_print_commands[] = {
PHPDBG_PRINT_COMMAND_D(exec, "print out the instructions in the main execution context", 'e', print_exec, NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(opline, "print out the instruction in the current opline", 'o', print_opline, NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(class, "print out the instructions in the specified class", 'c', print_class, NULL, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(method, "print out the instructions in the specified method", 'm', print_method, NULL, "m", PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(func, "print out the instructions in the specified function", 'f', print_func, NULL, "s", PHPDBG_ASYNC_SAFE),
PHPDBG_PRINT_COMMAND_D(stack, "print out the instructions in the current stack", 's', print_stack, NULL, 0, PHPDBG_ASYNC_SAFE),
PHPDBG_END_COMMAND
};
PHPDBG_PRINT(opline) /* {{{ */
{
if (PHPDBG_G(in_execution) && EG(current_execute_data)) {
phpdbg_print_opline(phpdbg_user_execute_data(EG(current_execute_data)), 1);
} else {
phpdbg_error("inactive", "type=\"execution\"", "Not Executing!");
}
return SUCCESS;
} /* }}} */
static inline void phpdbg_print_function_helper(zend_function *method) /* {{{ */
{
switch (method->type) {
case ZEND_USER_FUNCTION: {
zend_op_array* op_array = &(method->op_array);
if (op_array) {
zend_op *opline = &(op_array->opcodes[0]);
uint32_t opcode = 0,
end = op_array->last-1;
if (method->common.scope) {
phpdbg_writeln("printoplineinfo", "type=\"User\" startline=\"%d\" endline=\"%d\" method=\"%s::%s\" file=\"%s\" opline=\"%p\"", "L%d-%d %s::%s() %s - %p + %d ops",
op_array->line_start,
op_array->line_end,
ZSTR_VAL(method->common.scope->name),
ZSTR_VAL(method->common.function_name),
op_array->filename ? ZSTR_VAL(op_array->filename) : "unknown",
opline,
op_array->last);
} else {
phpdbg_writeln("printoplineinfo", "type=\"User\" startline=\"%d\" endline=\"%d\" function=\"%s\" file=\"%s\" opline=\"%p\"", "L%d-%d %s() %s - %p + %d ops",
op_array->line_start,
op_array->line_end,
method->common.function_name ? ZSTR_VAL(method->common.function_name) : "{main}",
op_array->filename ? ZSTR_VAL(op_array->filename) : "unknown",
opline,
op_array->last);
}
do {
char *decode = phpdbg_decode_opline(op_array, opline);
phpdbg_writeln("print", "line=\"%u\" opnum=\"%u\" op=\"%s\"", " L%-4u #%-5u %s",
opline->lineno,
opcode,
decode);
efree(decode);
opline++;
} while (opcode++ < end);
}
} break;
default: {
if (method->common.scope) {
phpdbg_writeln("printoplineinfo", "type=\"Internal\" method=\"%s::%s\"", "\tInternal %s::%s()", ZSTR_VAL(method->common.scope->name), ZSTR_VAL(method->common.function_name));
} else {
phpdbg_writeln("printoplineinfo", "type=\"Internal\" function=\"%s\"", "\tInternal %s()", ZSTR_VAL(method->common.function_name));
}
}
}
} /* }}} */
PHPDBG_PRINT(exec) /* {{{ */
{
if (PHPDBG_G(exec)) {
if (!PHPDBG_G(ops) && !(PHPDBG_G(flags) & PHPDBG_IN_SIGNAL_HANDLER)) {
phpdbg_compile();
}
if (PHPDBG_G(ops)) {
phpdbg_notice("printinfo", "file=\"%s\" num=\"%d\"", "Context %s (%d ops)", PHPDBG_G(exec), PHPDBG_G(ops)->last);
phpdbg_print_function_helper((zend_function*) PHPDBG_G(ops));
}
} else {
phpdbg_error("inactive", "type=\"nocontext\"", "No execution context set");
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(stack) /* {{{ */
{
if (PHPDBG_G(in_execution) && EG(current_execute_data)) {
zend_op_array *ops = &phpdbg_user_execute_data(EG(current_execute_data))->func->op_array;
if (ops->function_name) {
if (ops->scope) {
phpdbg_notice("printinfo", "method=\"%s::%s\" num=\"%d\"", "Stack in %s::%s() (%d ops)", ZSTR_VAL(ops->scope->name), ZSTR_VAL(ops->function_name), ops->last);
} else {
phpdbg_notice("printinfo", "function=\"%s\" num=\"%d\"", "Stack in %s() (%d ops)", ZSTR_VAL(ops->function_name), ops->last);
}
} else {
if (ops->filename) {
phpdbg_notice("printinfo", "file=\"%s\" num=\"%d\"", "Stack in %s (%d ops)", ZSTR_VAL(ops->filename), ops->last);
} else {
phpdbg_notice("printinfo", "opline=\"%p\" num=\"%d\"", "Stack @ %p (%d ops)", ops, ops->last);
}
}
phpdbg_print_function_helper((zend_function*) ops);
} else {
phpdbg_error("inactive", "type=\"execution\"", "Not Executing!");
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(class) /* {{{ */
{
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(param->str, param->len, &ce) == SUCCESS) {
phpdbg_notice("printinfo", "type=\"%s\" flag=\"%s\" class=\"%s\" num=\"%d\"", "%s %s: %s (%d methods)",
(ce->type == ZEND_USER_CLASS) ?
"User" : "Internal",
(ce->ce_flags & ZEND_ACC_INTERFACE) ?
"Interface" :
(ce->ce_flags & ZEND_ACC_ABSTRACT) ?
"Abstract Class" :
"Class",
ZSTR_VAL(ce->name),
zend_hash_num_elements(&ce->function_table));
phpdbg_xml("<printmethods %r>");
if (zend_hash_num_elements(&ce->function_table)) {
zend_function *method;
ZEND_HASH_FOREACH_PTR(&ce->function_table, method) {
phpdbg_print_function_helper(method);
} ZEND_HASH_FOREACH_END();
}
phpdbg_xml("</printmethods>");
} else {
phpdbg_error("print", "type=\"noclass\" class=\"%s\"", "The class %s could not be found", param->str);
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(method) /* {{{ */
{
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(param->method.class, strlen(param->method.class), &ce) == SUCCESS) {
zend_function *fbc;
zend_string *lcname = zend_string_alloc(strlen(param->method.name), 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), param->method.name, ZSTR_LEN(lcname));
if ((fbc = zend_hash_find_ptr(&ce->function_table, lcname))) {
phpdbg_notice("printinfo", "type=\"%s\" flags=\"Method\" symbol=\"%s\" num=\"%d\"", "%s Method %s (%d ops)",
(fbc->type == ZEND_USER_FUNCTION) ? "User" : "Internal",
ZSTR_VAL(fbc->common.function_name),
(fbc->type == ZEND_USER_FUNCTION) ? fbc->op_array.last : 0);
phpdbg_print_function_helper(fbc);
} else {
phpdbg_error("print", "type=\"nomethod\" method=\"%s::%s\"", "The method %s::%s could not be found", param->method.class, param->method.name);
}
zend_string_release(lcname);
} else {
phpdbg_error("print", "type=\"noclass\" class=\"%s\"", "The class %s could not be found", param->method.class);
}
return SUCCESS;
} /* }}} */
PHPDBG_PRINT(func) /* {{{ */
{
HashTable *func_table = EG(function_table);
zend_function* fbc;
const char *func_name = param->str;
size_t func_name_len = param->len;
zend_string *lcname;
/* search active scope if begins with period */
if (func_name[0] == '.') {
zend_class_entry *scope = zend_get_executed_scope();
if (scope) {
func_name++;
func_name_len--;
func_table = &scope->function_table;
} else {
phpdbg_error("inactive", "type=\"noclasses\"", "No active class");
return SUCCESS;
}
} else if (!EG(function_table)) {
phpdbg_error("inactive", "type=\"function_table\"", "No function table loaded");
return SUCCESS;
} else {
func_table = EG(function_table);
}
lcname = zend_string_alloc(func_name_len, 0);
zend_str_tolower_copy(ZSTR_VAL(lcname), func_name, ZSTR_LEN(lcname));
phpdbg_try_access {
if ((fbc = zend_hash_find_ptr(func_table, lcname))) {
phpdbg_notice("printinfo", "type=\"%s\" flags=\"%s\" symbol=\"%s\" num=\"%d\"", "%s %s %s (%d ops)",
(fbc->type == ZEND_USER_FUNCTION) ? "User" : "Internal",
(fbc->common.scope) ? "Method" : "Function",
ZSTR_VAL(fbc->common.function_name),
(fbc->type == ZEND_USER_FUNCTION) ? fbc->op_array.last : 0);
phpdbg_print_function_helper(fbc);
} else {
phpdbg_error("print", "type=\"nofunction\" function=\"%s\"", "The function %s could not be found", func_name);
}
} phpdbg_catch_access {
phpdbg_error("signalsegv", "function=\"%.*s\"", "Couldn't fetch function %.*s, invalid data source", (int) func_name_len, func_name);
} phpdbg_end_try_access();
efree(lcname);
return SUCCESS;
} /* }}} */
void phpdbg_print_opcodes_main() {
phpdbg_out("function name: (null)\n");
phpdbg_print_function_helper((zend_function *) PHPDBG_G(ops));
}
void phpdbg_print_opcodes_function(const char *function, size_t len) {
zend_function *func = zend_hash_str_find_ptr(EG(function_table), function, len);
if (!func) {
zend_string *rt_name;
ZEND_HASH_FOREACH_STR_KEY_PTR(EG(class_table), rt_name, func) {
if (func->type == ZEND_USER_FUNCTION && *rt_name->val == '\0') {
if (func->op_array.function_name->len == len && !zend_binary_strcasecmp(function, len, func->op_array.function_name->val, func->op_array.function_name->len)) {
phpdbg_print_opcodes_function(rt_name->val, rt_name->len);
}
}
} ZEND_HASH_FOREACH_END();
return;
}
phpdbg_out("function name: %.*s\n", (int) ZSTR_LEN(func->op_array.function_name), ZSTR_VAL(func->op_array.function_name));
phpdbg_print_function_helper(func);
}
static void phpdbg_print_opcodes_method_ce(zend_class_entry *ce, const char *function) {
zend_function *func;
if (ce->type != ZEND_USER_CLASS) {
phpdbg_out("function name: %s::%s (internal)\n", ce->name->val, function);
return;
}
if (!(func = zend_hash_str_find_ptr(&ce->function_table, function, strlen(function)))) {
return;
}
phpdbg_out("function name: %s::%s\n", ce->name->val, function);
phpdbg_print_function_helper(func);
}
void phpdbg_print_opcodes_method(const char *class, const char *function) {
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(class, strlen(class), &ce) != SUCCESS) {
zend_string *rt_name;
ZEND_HASH_FOREACH_STR_KEY_PTR(EG(class_table), rt_name, ce) {
if (ce->type == ZEND_USER_CLASS && *rt_name->val == '\0') {
if (ce->name->len == strlen(class) && !zend_binary_strcasecmp(class, strlen(class), ce->name->val, ce->name->len)) {
phpdbg_print_opcodes_method_ce(ce, function);
}
}
} ZEND_HASH_FOREACH_END();
return;
}
phpdbg_print_opcodes_method_ce(ce, function);
}
static void phpdbg_print_opcodes_ce(zend_class_entry *ce) {
zend_function *method;
zend_string *method_name;
zend_bool first = 1;
phpdbg_out("%s %s: %s\n",
(ce->type == ZEND_USER_CLASS) ?
"user" : "internal",
(ce->ce_flags & ZEND_ACC_INTERFACE) ?
"interface" :
(ce->ce_flags & ZEND_ACC_ABSTRACT) ?
"abstract Class" :
"class",
ZSTR_VAL(ce->name));
if (ce->type != ZEND_USER_CLASS) {
return;
}
phpdbg_out("%d methods: ", zend_hash_num_elements(&ce->function_table));
ZEND_HASH_FOREACH_PTR(&ce->function_table, method) {
if (first) {
first = 0;
} else {
phpdbg_out(", ");
}
phpdbg_out("%s", ZSTR_VAL(method->common.function_name));
} ZEND_HASH_FOREACH_END();
if (first) {
phpdbg_out("-");
}
phpdbg_out("\n");
ZEND_HASH_FOREACH_STR_KEY_PTR(&ce->function_table, method_name, method) {
phpdbg_out("\nfunction name: %s\n", ZSTR_VAL(method_name));
phpdbg_print_function_helper(method);
} ZEND_HASH_FOREACH_END();
}
void phpdbg_print_opcodes_class(const char *class) {
zend_class_entry *ce;
if (phpdbg_safe_class_lookup(class, strlen(class), &ce) != SUCCESS) {
zend_string *rt_name;
ZEND_HASH_FOREACH_STR_KEY_PTR(EG(class_table), rt_name, ce) {
if (ce->type == ZEND_USER_CLASS && *rt_name->val == '\0') {
if (ce->name->len == strlen(class) && !zend_binary_strcasecmp(class, strlen(class), ce->name->val, ce->name->len)) {
phpdbg_print_opcodes_ce(ce);
}
}
} ZEND_HASH_FOREACH_END();
return;
}
phpdbg_print_opcodes_ce(ce);
}
PHPDBG_API void phpdbg_print_opcodes(char *function)
{
if (function == NULL) {
phpdbg_print_opcodes_main();
} else if (function[0] == '*' && function[1] == 0) {
/* all */
zend_string *name;
zend_function *func;
zend_class_entry *ce;
phpdbg_print_opcodes_main();
ZEND_HASH_FOREACH_STR_KEY_PTR(EG(function_table), name, func) {
if (func->type == ZEND_USER_FUNCTION) {
phpdbg_out("\n");
phpdbg_print_opcodes_function(ZSTR_VAL(name), ZSTR_LEN(name));
}
} ZEND_HASH_FOREACH_END();
ZEND_HASH_FOREACH_PTR(EG(class_table), ce) {
if (ce->type == ZEND_USER_CLASS) {
phpdbg_out("\n\n");
phpdbg_print_opcodes_ce(ce);
}
} ZEND_HASH_FOREACH_END();
} else {
function = zend_str_tolower_dup(function, strlen(function));
if (strstr(function, "::") == NULL) {
phpdbg_print_opcodes_function(function, strlen(function));
} else {
char *method_name, *class_name = strtok(function, "::");
if ((method_name = strtok(NULL, "::")) == NULL) {
phpdbg_print_opcodes_class(class_name);
} else {
phpdbg_print_opcodes_method(class_name, method_name);
}
}
efree(function);
}
}
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