#include "zend.h"
#include "phpdbg.h"
#include "phpdbg_utils.h"
#include "phpdbg_frame.h"
#include "phpdbg_list.h"
ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
void phpdbg_restore_frame(TSRMLS_D)
{
if (PHPDBG_FRAME(num) == 0) {
return;
}
PHPDBG_FRAME(num) = 0;
EG(current_execute_data) = PHPDBG_FRAME(execute_data);
EG(opline_ptr) = &PHPDBG_EX(opline);
EG(active_op_array) = PHPDBG_EX(op_array);
EG(return_value_ptr_ptr) = PHPDBG_EX(original_return_value);
EG(active_symbol_table) = PHPDBG_EX(symbol_table);
EG(This) = PHPDBG_EX(current_this);
EG(scope) = PHPDBG_EX(current_scope);
EG(called_scope) = PHPDBG_EX(current_called_scope);
}
void phpdbg_switch_frame(int frame TSRMLS_DC)
{
zend_execute_data *execute_data = PHPDBG_FRAME(num)?PHPDBG_FRAME(execute_data):EG(current_execute_data);
int i = 0;
if (PHPDBG_FRAME(num) == frame) {
phpdbg_notice("Already in frame #%d", frame);
return;
}
while (execute_data) {
if (i++ == frame) {
break;
}
do {
execute_data = execute_data->prev_execute_data;
} while (execute_data && execute_data->opline == NULL);
}
if (execute_data == NULL) {
phpdbg_error("No frame #%d", frame);
return;
}
phpdbg_restore_frame(TSRMLS_C);
if (frame > 0) {
PHPDBG_FRAME(num) = frame;
PHPDBG_FRAME(execute_data) = EG(current_execute_data);
EG(current_execute_data) = execute_data;
EG(opline_ptr) = &PHPDBG_EX(opline);
EG(active_op_array) = PHPDBG_EX(op_array);
PHPDBG_FRAME(execute_data)->original_return_value = EG(return_value_ptr_ptr);
EG(return_value_ptr_ptr) = PHPDBG_EX(original_return_value);
EG(active_symbol_table) = PHPDBG_EX(symbol_table);
EG(This) = PHPDBG_EX(current_this);
EG(scope) = PHPDBG_EX(current_scope);
EG(called_scope) = PHPDBG_EX(current_called_scope);
}
phpdbg_notice("Switched to frame #%d", frame);
phpdbg_list_file(
zend_get_executed_filename(TSRMLS_C),
3,
zend_get_executed_lineno(TSRMLS_C)-1,
zend_get_executed_lineno(TSRMLS_C)
TSRMLS_CC
);
}
static void phpdbg_dump_prototype(zval **tmp TSRMLS_DC)
{
zval **funcname, **class, **type, **args, **argstmp;
char is_class;
zend_hash_find(Z_ARRVAL_PP(tmp), "function", sizeof("function"),
(void **)&funcname);
if ((is_class = zend_hash_find(Z_ARRVAL_PP(tmp),
"object", sizeof("object"), (void **)&class)) == FAILURE) {
is_class = zend_hash_find(Z_ARRVAL_PP(tmp), "class", sizeof("class"),
(void **)&class);
} else {
zend_get_object_classname(*class, (const char **)&Z_STRVAL_PP(class),
(zend_uint *)&Z_STRLEN_PP(class) TSRMLS_CC);
}
if (is_class == SUCCESS) {
zend_hash_find(Z_ARRVAL_PP(tmp), "type", sizeof("type"), (void **)&type);
}
phpdbg_write("%s%s%s(",
is_class == FAILURE?"":Z_STRVAL_PP(class),
is_class == FAILURE?"":Z_STRVAL_PP(type),
Z_STRVAL_PP(funcname)
);
if (zend_hash_find(Z_ARRVAL_PP(tmp), "args", sizeof("args"),
(void **)&args) == SUCCESS) {
HashPosition iterator;
const zend_function *func = phpdbg_get_function(
Z_STRVAL_PP(funcname), is_class == FAILURE ? NULL : Z_STRVAL_PP(class) TSRMLS_CC);
const zend_arg_info *arginfo = func ? func->common.arg_info : NULL;
int j = 0, m = func ? func->common.num_args : 0;
zend_bool is_variadic = 0;
zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(args), &iterator);
while (zend_hash_get_current_data_ex(Z_ARRVAL_PP(args),
(void **) &argstmp, &iterator) == SUCCESS) {
if (j) {
phpdbg_write(", ");
}
if (m && j < m) {
#if PHP_VERSION_ID >= 50600
is_variadic = arginfo[j].is_variadic;
#endif
phpdbg_write("%s=%s",
arginfo[j].name, is_variadic ? "[": "");
}
++j;
zend_print_flat_zval_r(*argstmp TSRMLS_CC);
zend_hash_move_forward_ex(Z_ARRVAL_PP(args), &iterator);
}
if (is_variadic) {
phpdbg_write("]");
}
}
phpdbg_write(")");
}
void phpdbg_dump_backtrace(size_t num TSRMLS_DC)
{
zval zbacktrace;
zval **tmp;
zval **file, **line;
HashPosition position;
int i = 0, limit = num;
int user_defined;
if (limit < 0) {
phpdbg_error("Invalid backtrace size %d", limit);
}
zend_fetch_debug_backtrace(
&zbacktrace, 0, 0, limit TSRMLS_CC);
zend_hash_internal_pointer_reset_ex(Z_ARRVAL(zbacktrace), &position);
zend_hash_get_current_data_ex(Z_ARRVAL(zbacktrace), (void**)&tmp, &position);
while (1) {
user_defined = zend_hash_find(Z_ARRVAL_PP(tmp), "file", sizeof("file"), (void **)&file);
zend_hash_find(Z_ARRVAL_PP(tmp), "line", sizeof("line"), (void **)&line);
zend_hash_move_forward_ex(Z_ARRVAL(zbacktrace), &position);
if (zend_hash_get_current_data_ex(Z_ARRVAL(zbacktrace),
(void**)&tmp, &position) == FAILURE) {
phpdbg_write("frame #%d: {main} at %s:%ld", i, Z_STRVAL_PP(file), Z_LVAL_PP(line));
break;
}
if (user_defined == SUCCESS) {
phpdbg_write("frame #%d: ", i++);
phpdbg_dump_prototype(tmp TSRMLS_CC);
phpdbg_writeln(" at %s:%ld", Z_STRVAL_PP(file), Z_LVAL_PP(line));
} else {
phpdbg_write(" => ");
phpdbg_dump_prototype(tmp TSRMLS_CC);
phpdbg_writeln(" (internal function)");
}
}
phpdbg_writeln(EMPTY);
zval_dtor(&zbacktrace);
}