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|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 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[9], flags)
const phpdbg_command_t phpdbg_print_commands[] = {
PHPDBG_PRINT_COMMAND_D(exec, "print out the instructions in the 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(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);
HashTable vars;
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\"", "\tL%d-%d %s::%s() %s",
op_array->line_start,
op_array->line_end,
method->common.scope->name->val,
method->common.function_name->val,
op_array->filename ? op_array->filename->val : "unknown");
} else {
phpdbg_writeln("printoplineinfo", "type=\"User\" startline=\"%d\" endline=\"%d\" function=\"%s\" file=\"%s\"", "\tL%d-%d %s() %s",
method->common.function_name ? op_array->line_start : 0,
method->common.function_name ? op_array->line_end : 0,
method->common.function_name ? method->common.function_name->val : "{main}",
op_array->filename ? op_array->filename->val : "unknown");
}
zend_hash_init(&vars, op_array->last, NULL, NULL, 0);
do {
char *decode = phpdbg_decode_opline(op_array, opline, &vars);
if (decode != NULL) {
phpdbg_writeln("print", "line=\"%u\" opline=\"%p\" opcode=\"%s\" op=\"%s\"", "\t\tL%u\t%p %-30s %s",
opline->lineno,
opline,
phpdbg_decode_opcode(opline->opcode),
decode);
free(decode);
} else {
phpdbg_error("print", "type=\"decodefailure\" opline=\"%16p\"", "\tFailed to decode opline %16p", opline);
}
opline++;
} while (opcode++ < end);
zend_hash_destroy(&vars);
}
} break;
default: {
if (method->common.scope) {
phpdbg_writeln("printoplineinfo", "type=\"Internal\" method=\"%s::%s\"", "\tInternal %s::%s()", method->common.scope->name->val, method->common.function_name->val);
} else {
phpdbg_writeln("printoplineinfo", "type=\"Internal\" function=\"%s\"", "\tInternal %s()", method->common.function_name->val);
}
}
}
} /* }}} */
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 = &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)", ops->scope->name->val, ops->function_name->val, ops->last);
} else {
phpdbg_notice("printinfo", "function=\"%s\" num=\"%d\"", "Stack in %s() (%d ops)", ops->function_name->val, ops->last);
}
} else {
if (ops->filename) {
phpdbg_notice("printinfo", "file=\"%s\" num=\"%d\"", "Stack in %s (%d ops)", ops->filename->val, 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",
ce->name->val,
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(lcname->val, param->method.name, lcname->len);
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",
fbc->common.function_name->val,
(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] == '.') {
if (EG(scope)) {
func_name++;
func_name_len--;
func_table = &EG(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(lcname->val, func_name, lcname->len);
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",
fbc->common.function_name->val,
(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;
} /* }}} */
|
