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php-src/ext/mysqlnd/mysqlnd_bt.c
Felipe Pena 8775a37559 - Year++
2012-01-01 13:15:04 +00:00

485 lines
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2012 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: Georg Richter <georg@mysql.com> |
| Andrey Hristov <andrey@mysql.com> |
| Ulf Wendel <uwendel@mysql.com> |
+----------------------------------------------------------------------+
*/
/* $Id: mysqlnd_debug.c 309303 2011-03-16 12:42:59Z andrey $ */
#include "php.h"
#include "Zend/zend_builtin_functions.h"
/* Follows code borrowed from zend_builtin_functions.c because the functions there are static */
#if MYSQLND_UNICODE
/* {{{ gettraceasstring() macros */
#define TRACE_APPEND_CHR(chr) \
*str = (char*)erealloc(*str, *len + 1 + 1); \
(*str)[(*len)++] = chr
#define TRACE_APPEND_STRL(val, vallen) \
{ \
int l = vallen; \
*str = (char*)erealloc(*str, *len + l + 1); \
memcpy((*str) + *len, val, l); \
*len += l; \
}
#define TRACE_APPEND_USTRL(val, vallen) \
{ \
zval tmp, copy; \
int use_copy; \
ZVAL_UNICODEL(&tmp, val, vallen, 1); \
zend_make_printable_zval(&tmp, &copy, &use_copy); \
TRACE_APPEND_STRL(Z_STRVAL(copy), Z_STRLEN(copy)); \
zval_dtor(&copy); \
zval_dtor(&tmp); \
}
#define TRACE_APPEND_ZVAL(zv) \
if (Z_TYPE_P((zv)) == IS_UNICODE) { \
zval copy; \
int use_copy; \
zend_make_printable_zval((zv), &copy, &use_copy); \
TRACE_APPEND_STRL(Z_STRVAL(copy), Z_STRLEN(copy)); \
zval_dtor(&copy); \
} else { \
TRACE_APPEND_STRL(Z_STRVAL_P((zv)), Z_STRLEN_P((zv))); \
}
#define TRACE_APPEND_STR(val) \
TRACE_APPEND_STRL(val, sizeof(val)-1)
#define TRACE_APPEND_KEY(key) \
if (zend_ascii_hash_find(ht, key, sizeof(key), (void**)&tmp) == SUCCESS) { \
if (Z_TYPE_PP(tmp) == IS_UNICODE) { \
zval copy; \
int use_copy; \
zend_make_printable_zval(*tmp, &copy, &use_copy); \
TRACE_APPEND_STRL(Z_STRVAL(copy), Z_STRLEN(copy)); \
zval_dtor(&copy); \
} else { \
TRACE_APPEND_STRL(Z_STRVAL_PP(tmp), Z_STRLEN_PP(tmp)); \
} \
}
/* }}} */
/* {{{ mysqlnd_build_trace_args */
static int mysqlnd_build_trace_args(zval **arg TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key)
{
char **str;
int *len;
str = va_arg(args, char**);
len = va_arg(args, int*);
/* the trivial way would be to do:
* conver_to_string_ex(arg);
* append it and kill the now tmp arg.
* but that could cause some E_NOTICE and also damn long lines.
*/
switch (Z_TYPE_PP(arg)) {
case IS_NULL:
TRACE_APPEND_STR("NULL, ");
break;
case IS_STRING: {
int l_added;
TRACE_APPEND_CHR('\'');
if (Z_STRLEN_PP(arg) > 15) {
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), 15);
TRACE_APPEND_STR("...', ");
l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
} else {
l_added = Z_STRLEN_PP(arg);
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), l_added);
TRACE_APPEND_STR("', ");
l_added += 3 + 1;
}
while (--l_added) {
if ((unsigned char)(*str)[*len - l_added] < 32) {
(*str)[*len - l_added] = '?';
}
}
break;
}
case IS_UNICODE: {
int l_added;
/*
* We do not want to apply current error mode here, since
* zend_make_printable_zval() uses output encoding converter.
* Temporarily set output encoding converter to escape offending
* chars with \uXXXX notation.
*/
zend_set_converter_error_mode(ZEND_U_CONVERTER(UG(output_encoding_conv)), ZEND_FROM_UNICODE, ZEND_CONV_ERROR_ESCAPE_JAVA);
TRACE_APPEND_CHR('\'');
if (Z_USTRLEN_PP(arg) > 15) {
TRACE_APPEND_USTRL(Z_USTRVAL_PP(arg), 15);
TRACE_APPEND_STR("...', ");
l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
} else {
l_added = Z_USTRLEN_PP(arg);
TRACE_APPEND_USTRL(Z_USTRVAL_PP(arg), l_added);
TRACE_APPEND_STR("', ");
l_added += 3 + 1;
}
/*
* Reset output encoding converter error mode.
*/
zend_set_converter_error_mode(ZEND_U_CONVERTER(UG(output_encoding_conv)), ZEND_FROM_UNICODE, UG(from_error_mode));
while (--l_added) {
if ((unsigned char)(*str)[*len - l_added] < 32) {
(*str)[*len - l_added] = '?';
}
}
break;
}
case IS_BOOL:
if (Z_LVAL_PP(arg)) {
TRACE_APPEND_STR("true, ");
} else {
TRACE_APPEND_STR("false, ");
}
break;
case IS_RESOURCE:
TRACE_APPEND_STR("Resource id #");
/* break; */
case IS_LONG: {
long lval = Z_LVAL_PP(arg);
char s_tmp[MAX_LENGTH_OF_LONG + 1];
int l_tmp = zend_sprintf(s_tmp, "%ld", lval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_DOUBLE: {
double dval = Z_DVAL_PP(arg);
char *s_tmp;
int l_tmp;
s_tmp = emalloc(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
l_tmp = zend_sprintf(s_tmp, "%.*G", (int) EG(precision), dval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
/* %G already handles removing trailing zeros from the fractional part, yay */
efree(s_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_ARRAY:
TRACE_APPEND_STR("Array, ");
break;
case IS_OBJECT: {
zval tmp;
zstr class_name;
zend_uint class_name_len;
int dup;
TRACE_APPEND_STR("Object(");
dup = zend_get_object_classname(*arg, &class_name, &class_name_len TSRMLS_CC);
ZVAL_UNICODEL(&tmp, class_name.u, class_name_len, 1);
convert_to_string_with_converter(&tmp, ZEND_U_CONVERTER(UG(output_encoding_conv)));
TRACE_APPEND_STRL(Z_STRVAL(tmp), Z_STRLEN(tmp));
zval_dtor(&tmp);
if(!dup) {
efree(class_name.v);
}
TRACE_APPEND_STR("), ");
break;
}
default:
break;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
static int mysqlnd_build_trace_string(zval **frame TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char *s_tmp, **str;
int *len, *num;
long line;
HashTable *ht = Z_ARRVAL_PP(frame);
zval **file, **tmp;
uint * level;
level = va_arg(args, uint *);
str = va_arg(args, char**);
len = va_arg(args, int*);
num = va_arg(args, int*);
if (!*level) {
return ZEND_HASH_APPLY_KEEP;
}
--*level;
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 1 + 1);
sprintf(s_tmp, "#%d ", (*num)++);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
if (zend_ascii_hash_find(ht, "file", sizeof("file"), (void**)&file) == SUCCESS) {
if (zend_ascii_hash_find(ht, "line", sizeof("line"), (void**)&tmp) == SUCCESS) {
line = Z_LVAL_PP(tmp);
} else {
line = 0;
}
TRACE_APPEND_ZVAL(*file);
s_tmp = emalloc(MAX_LENGTH_OF_LONG + 2 + 1);
sprintf(s_tmp, "(%ld): ", line);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
} else {
TRACE_APPEND_STR("[internal function]: ");
}
TRACE_APPEND_KEY("class");
TRACE_APPEND_KEY("type");
TRACE_APPEND_KEY("function");
TRACE_APPEND_CHR('(');
if (zend_ascii_hash_find(ht, "args", sizeof("args"), (void**)&tmp) == SUCCESS) {
int last_len = *len;
zend_hash_apply_with_arguments(Z_ARRVAL_PP(tmp) TSRMLS_CC, (apply_func_args_t)mysqlnd_build_trace_args, 2, str, len);
if (last_len != *len) {
*len -= 2; /* remove last ', ' */
}
}
TRACE_APPEND_STR(")\n");
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
#else /* PHP 5*/
/* {{{ gettraceasstring() macros */
#define TRACE_APPEND_CHR(chr) \
*str = (char*)erealloc(*str, *len + 1 + 1); \
(*str)[(*len)++] = chr
#define TRACE_APPEND_STRL(val, vallen) \
{ \
int l = vallen; \
*str = (char*)erealloc(*str, *len + l + 1); \
memcpy((*str) + *len, val, l); \
*len += l; \
}
#define TRACE_APPEND_STR(val) \
TRACE_APPEND_STRL(val, sizeof(val)-1)
#define TRACE_APPEND_KEY(key) \
if (zend_hash_find(ht, key, sizeof(key), (void**)&tmp) == SUCCESS) { \
TRACE_APPEND_STRL(Z_STRVAL_PP(tmp), Z_STRLEN_PP(tmp)); \
}
/* }}} */
static int mysqlnd_build_trace_args(zval **arg TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char **str;
int *len;
str = va_arg(args, char**);
len = va_arg(args, int*);
/* the trivial way would be to do:
* conver_to_string_ex(arg);
* append it and kill the now tmp arg.
* but that could cause some E_NOTICE and also damn long lines.
*/
switch (Z_TYPE_PP(arg)) {
case IS_NULL:
TRACE_APPEND_STR("NULL, ");
break;
case IS_STRING: {
int l_added;
TRACE_APPEND_CHR('\'');
if (Z_STRLEN_PP(arg) > 15) {
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), 15);
TRACE_APPEND_STR("...', ");
l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
} else {
l_added = Z_STRLEN_PP(arg);
TRACE_APPEND_STRL(Z_STRVAL_PP(arg), l_added);
TRACE_APPEND_STR("', ");
l_added += 3 + 1;
}
while (--l_added) {
if ((*str)[*len - l_added] < 32) {
(*str)[*len - l_added] = '?';
}
}
break;
}
case IS_BOOL:
if (Z_LVAL_PP(arg)) {
TRACE_APPEND_STR("true, ");
} else {
TRACE_APPEND_STR("false, ");
}
break;
case IS_RESOURCE:
TRACE_APPEND_STR("Resource id #");
/* break; */
case IS_LONG: {
long lval = Z_LVAL_PP(arg);
char s_tmp[MAX_LENGTH_OF_LONG + 1];
int l_tmp = zend_sprintf(s_tmp, "%ld", lval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_DOUBLE: {
double dval = Z_DVAL_PP(arg);
char *s_tmp;
int l_tmp;
s_tmp = emalloc(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
l_tmp = zend_sprintf(s_tmp, "%.*G", (int) EG(precision), dval); /* SAFE */
TRACE_APPEND_STRL(s_tmp, l_tmp);
/* %G already handles removing trailing zeros from the fractional part, yay */
efree(s_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_ARRAY:
TRACE_APPEND_STR("Array, ");
break;
case IS_OBJECT: {
char *class_name;
zend_uint class_name_len;
int dupl;
TRACE_APPEND_STR("Object(");
dupl = zend_get_object_classname(*arg, (const char **)&class_name, &class_name_len TSRMLS_CC);
TRACE_APPEND_STRL(class_name, class_name_len);
if (!dupl) {
efree(class_name);
}
TRACE_APPEND_STR("), ");
break;
}
default:
break;
}
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
static int mysqlnd_build_trace_string(zval **frame TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
{
char *s_tmp, **str;
int *len, *num;
long line;
HashTable *ht = Z_ARRVAL_PP(frame);
zval **file, **tmp;
uint * level;
level = va_arg(args, uint *);
str = va_arg(args, char**);
len = va_arg(args, int*);
num = va_arg(args, int*);
if (!*level) {
return ZEND_HASH_APPLY_KEEP;
}
--*level;
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 1 + 1);
sprintf(s_tmp, "#%d ", (*num)++);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
if (zend_hash_find(ht, "file", sizeof("file"), (void**)&file) == SUCCESS) {
if (zend_hash_find(ht, "line", sizeof("line"), (void**)&tmp) == SUCCESS) {
line = Z_LVAL_PP(tmp);
} else {
line = 0;
}
s_tmp = emalloc(Z_STRLEN_PP(file) + MAX_LENGTH_OF_LONG + 4 + 1);
sprintf(s_tmp, "%s(%ld): ", Z_STRVAL_PP(file), line);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
} else {
TRACE_APPEND_STR("[internal function]: ");
}
TRACE_APPEND_KEY("class");
TRACE_APPEND_KEY("type");
TRACE_APPEND_KEY("function");
TRACE_APPEND_CHR('(');
if (zend_hash_find(ht, "args", sizeof("args"), (void**)&tmp) == SUCCESS) {
int last_len = *len;
zend_hash_apply_with_arguments(Z_ARRVAL_PP(tmp) TSRMLS_CC, (apply_func_args_t)mysqlnd_build_trace_args, 2, str, len);
if (last_len != *len) {
*len -= 2; /* remove last ', ' */
}
}
TRACE_APPEND_STR(")\n");
return ZEND_HASH_APPLY_KEEP;
}
/* }}} */
#endif
PHPAPI char * mysqlnd_get_backtrace(uint max_levels, size_t * length TSRMLS_DC)
{
zval *trace;
char *res = estrdup(""), **str = &res, *s_tmp;
int res_len = 0, *len = &res_len, num = 0;
if (max_levels == 0) {
max_levels = 99999;
}
MAKE_STD_ZVAL(trace);
zend_fetch_debug_backtrace(trace, 0, 0, 0 TSRMLS_CC);
zend_hash_apply_with_arguments(Z_ARRVAL_P(trace) TSRMLS_CC, (apply_func_args_t)mysqlnd_build_trace_string, 4, &max_levels, str, len, &num);
zval_ptr_dtor(&trace);
if (max_levels) {
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 7 + 1);
sprintf(s_tmp, "#%d {main}", num);
TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
efree(s_tmp);
}
res[res_len] = '\0';
*length = res_len;
return res;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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