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php-src/Zend/zend_exceptions.c
Dmitry Stogov ea17b018d8 Fixed dtrace support
2014-07-22 11:12:49 +04:00

946 lines
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Marcus Boerger <helly@php.net> |
| Sterling Hughes <sterling@php.net> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
#include "zend_API.h"
#include "zend_builtin_functions.h"
#include "zend_interfaces.h"
#include "zend_exceptions.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
static zend_class_entry *default_exception_ce;
static zend_class_entry *error_exception_ce;
static zend_object_handlers default_exception_handlers;
ZEND_API void (*zend_throw_exception_hook)(zval *ex TSRMLS_DC);
void zend_exception_set_previous(zend_object *exception, zend_object *add_previous TSRMLS_DC)
{
zval tmp, *previous, zv, *pzv;
if (exception == add_previous || !add_previous || !exception) {
return;
}
ZVAL_OBJ(&tmp, add_previous);
if (!instanceof_function(Z_OBJCE(tmp), default_exception_ce TSRMLS_CC)) {
zend_error(E_ERROR, "Cannot set non exception as previous exception");
return;
}
ZVAL_OBJ(&zv, exception);
pzv = &zv;
do {
previous = zend_read_property(default_exception_ce, pzv, "previous", sizeof("previous")-1, 1 TSRMLS_CC);
if (Z_TYPE_P(previous) == IS_NULL) {
zend_update_property(default_exception_ce, pzv, "previous", sizeof("previous")-1, &tmp TSRMLS_CC);
GC_REFCOUNT(add_previous)--;
return;
}
pzv = previous;
} while (pzv && Z_OBJ_P(pzv) != add_previous);
}
void zend_exception_save(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
}
if (EG(exception)) {
EG(prev_exception) = EG(exception);
}
EG(exception) = NULL;
}
/* }}} */
void zend_exception_restore(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
if (EG(exception)) {
zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
} else {
EG(exception) = EG(prev_exception);
}
EG(prev_exception) = NULL;
}
}
/* }}} */
void zend_throw_exception_internal(zval *exception TSRMLS_DC) /* {{{ */
{
#ifdef HAVE_DTRACE
if (DTRACE_EXCEPTION_THROWN_ENABLED()) {
zend_string *classname;
if (exception != NULL) {
classname = zend_get_object_classname(Z_OBJ_P(exception) TSRMLS_CC);
DTRACE_EXCEPTION_THROWN(classname->val);
} else {
DTRACE_EXCEPTION_THROWN(NULL);
}
}
#endif /* HAVE_DTRACE */
if (exception != NULL) {
zend_object *previous = EG(exception);
zend_exception_set_previous(Z_OBJ_P(exception), EG(exception) TSRMLS_CC);
EG(exception) = Z_OBJ_P(exception);
if (previous) {
return;
}
}
if (!EG(current_execute_data)) {
if(EG(exception)) {
zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
}
zend_error(E_ERROR, "Exception thrown without a stack frame");
}
if (zend_throw_exception_hook) {
zend_throw_exception_hook(exception TSRMLS_CC);
}
if (!EG(current_execute_data)->func ||
!ZEND_USER_CODE(EG(current_execute_data)->func->common.type) ||
(EG(current_execute_data)->opline+1)->opcode == ZEND_HANDLE_EXCEPTION) {
/* no need to rethrow the exception */
return;
}
EG(opline_before_exception) = EG(current_execute_data)->opline;
EG(current_execute_data)->opline = EG(exception_op);
}
/* }}} */
ZEND_API void zend_clear_exception(TSRMLS_D) /* {{{ */
{
if (EG(prev_exception)) {
OBJ_RELEASE(EG(prev_exception));
EG(prev_exception) = NULL;
}
if (!EG(exception)) {
return;
}
OBJ_RELEASE(EG(exception));
EG(exception) = NULL;
EG(current_execute_data)->opline = EG(opline_before_exception);
#if ZEND_DEBUG
EG(opline_before_exception) = NULL;
#endif
}
/* }}} */
static zend_object *zend_default_exception_new_ex(zend_class_entry *class_type, int skip_top_traces TSRMLS_DC) /* {{{ */
{
zval obj;
zend_object *object;
zval trace;
Z_OBJ(obj) = object = zend_objects_new(class_type TSRMLS_CC);
Z_OBJ_HT(obj) = &default_exception_handlers;
object_properties_init(object, class_type);
zend_fetch_debug_backtrace(&trace, skip_top_traces, 0, 0 TSRMLS_CC);
Z_SET_REFCOUNT(trace, 0);
zend_update_property_string(default_exception_ce, &obj, "file", sizeof("file")-1, zend_get_executed_filename(TSRMLS_C) TSRMLS_CC);
zend_update_property_long(default_exception_ce, &obj, "line", sizeof("line")-1, zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
zend_update_property(default_exception_ce, &obj, "trace", sizeof("trace")-1, &trace TSRMLS_CC);
return object;
}
/* }}} */
static zend_object *zend_default_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
{
return zend_default_exception_new_ex(class_type, 0 TSRMLS_CC);
}
/* }}} */
static zend_object *zend_error_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
{
return zend_default_exception_new_ex(class_type, 2 TSRMLS_CC);
}
/* }}} */
/* {{{ proto Exception Exception::__clone()
Clone the exception object */
ZEND_METHOD(exception, __clone)
{
/* Should never be executable */
zend_throw_exception(NULL, "Cannot clone object using __clone()", 0 TSRMLS_CC);
}
/* }}} */
/* {{{ proto Exception::__construct(string message, int code [, Exception previous])
Exception constructor */
ZEND_METHOD(exception, __construct)
{
zend_string *message = NULL;
long code = 0;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS();
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|SlO!", &message, &code, &previous, default_exception_ce) == FAILURE) {
zend_error(E_ERROR, "Wrong parameters for Exception([string $exception [, long $code [, Exception $previous = NULL]]])");
}
object = getThis();
if (message) {
zend_update_property_str(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
}
if (previous) {
zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
}
}
/* }}} */
/* {{{ proto ErrorException::__construct(string message, int code, int severity [, string filename [, int lineno [, Exception previous]]])
ErrorException constructor */
ZEND_METHOD(error_exception, __construct)
{
char *message = NULL, *filename = NULL;
long code = 0, severity = E_ERROR, lineno;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS(), message_len, filename_len;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|sllslO!", &message, &message_len, &code, &severity, &filename, &filename_len, &lineno, &previous, default_exception_ce) == FAILURE) {
zend_error(E_ERROR, "Wrong parameters for ErrorException([string $exception [, long $code, [ long $severity, [ string $filename, [ long $lineno [, Exception $previous = NULL]]]]]])");
}
object = getThis();
if (message) {
zend_update_property_string(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
}
if (previous) {
zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
}
zend_update_property_long(default_exception_ce, object, "severity", sizeof("severity")-1, severity TSRMLS_CC);
if (argc >= 4) {
zend_update_property_string(default_exception_ce, object, "file", sizeof("file")-1, filename TSRMLS_CC);
if (argc < 5) {
lineno = 0; /* invalidate lineno */
}
zend_update_property_long(default_exception_ce, object, "line", sizeof("line")-1, lineno TSRMLS_CC);
}
}
/* }}} */
#define DEFAULT_0_PARAMS \
if (zend_parse_parameters_none() == FAILURE) { \
return; \
}
static void _default_exception_get_entry(zval *object, char *name, int name_len, zval *return_value TSRMLS_DC) /* {{{ */
{
zval *value;
value = zend_read_property(default_exception_ce, object, name, name_len, 0 TSRMLS_CC);
ZVAL_COPY(return_value, value);
}
/* }}} */
/* {{{ proto string Exception::getFile()
Get the file in which the exception occurred */
ZEND_METHOD(exception, getFile)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "file", sizeof("file")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int Exception::getLine()
Get the line in which the exception occurred */
ZEND_METHOD(exception, getLine)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "line", sizeof("line")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string Exception::getMessage()
Get the exception message */
ZEND_METHOD(exception, getMessage)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "message", sizeof("message")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int Exception::getCode()
Get the exception code */
ZEND_METHOD(exception, getCode)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "code", sizeof("code")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto array Exception::getTrace()
Get the stack trace for the location in which the exception occurred */
ZEND_METHOD(exception, getTrace)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "trace", sizeof("trace")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto int ErrorException::getSeverity()
Get the exception severity */
ZEND_METHOD(error_exception, getSeverity)
{
DEFAULT_0_PARAMS;
_default_exception_get_entry(getThis(), "severity", sizeof("severity")-1, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ gettraceasstring() macros */
#define TRACE_APPEND_CHR(chr) \
str = STR_REALLOC(str, str->len + 1, 0); \
str->val[str->len - 1] = chr
#define TRACE_APPEND_STRL(v, l) \
{ \
str = STR_REALLOC(str, str->len + (l), 0); \
memcpy(str->val + str->len - (l), (v), (l)); \
}
#define TRACE_APPEND_STR(v) \
TRACE_APPEND_STRL((v), sizeof((v))-1)
#define TRACE_APPEND_KEY(key) do { \
tmp = zend_hash_str_find(ht, key, sizeof(key)-1); \
if (tmp) { \
if (Z_TYPE_P(tmp) != IS_STRING) { \
zend_error(E_WARNING, "Value for %s is no string", key); \
TRACE_APPEND_STR("[unknown]"); \
} else { \
TRACE_APPEND_STRL(Z_STRVAL_P(tmp), Z_STRLEN_P(tmp)); \
} \
} \
} while (0)
#define TRACE_ARG_APPEND(vallen) do { \
int len = str->len; \
str = STR_REALLOC(str, len + vallen, 0); \
memmove(str->val + len - l_added + 1 + vallen, str->val + len - l_added + 1, l_added); \
} while (0)
/* }}} */
static void _build_trace_args(zval *arg, zend_string **str_ptr TSRMLS_DC) /* {{{ */
{
zend_string *str = *str_ptr;
/* the trivial way would be to do:
* convert_to_string_ex(arg);
* append it and kill the now tmp arg.
* but that could cause some E_NOTICE and also damn long lines.
*/
ZVAL_DEREF(arg);
switch (Z_TYPE_P(arg)) {
case IS_NULL:
TRACE_APPEND_STR("NULL, ");
break;
case IS_STRING: {
int l_added;
TRACE_APPEND_CHR('\'');
if (Z_STRLEN_P(arg) > 15) {
TRACE_APPEND_STRL(Z_STRVAL_P(arg), 15);
TRACE_APPEND_STR("...', ");
l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
} else {
l_added = Z_STRLEN_P(arg);
TRACE_APPEND_STRL(Z_STRVAL_P(arg), l_added);
TRACE_APPEND_STR("', ");
l_added += 3 + 1;
}
while (--l_added) {
unsigned char chr = str->val[str->len - l_added];
if (chr < 32 || chr == '\\' || chr > 126) {
str->val[str->len - l_added] = '\\';
switch (chr) {
case '\n':
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = 'n';
break;
case '\r':
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = 'r';
break;
case '\t':
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = 't';
break;
case '\f':
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = 'f';
break;
case '\v':
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = 'v';
break;
#ifndef PHP_WIN32
case '\e':
#else
case VK_ESCAPE:
#endif
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = 'e';
break;
case '\\':
TRACE_ARG_APPEND(1);
str->val[str->len - l_added] = '\\';
break;
default:
TRACE_ARG_APPEND(3);
str->val[str->len - l_added - 2] = 'x';
if ((chr >> 4) < 10) {
str->val[str->len - l_added - 1] = (chr >> 4) + '0';
} else {
str->val[str->len - l_added - 1] = (chr >> 4) + 'A' - 10;
}
if (chr % 16 < 10) {
str->val[str->len - l_added] = chr % 16 + '0';
} else {
str->val[str->len - l_added] = chr % 16 + 'A' - 10;
}
}
}
}
break;
}
case IS_FALSE:
TRACE_APPEND_STR("false, ");
break;
case IS_TRUE:
TRACE_APPEND_STR("true, ");
break;
case IS_RESOURCE: {
long lval = Z_RES_HANDLE_P(arg);
char s_tmp[MAX_LENGTH_OF_LONG + 1];
int l_tmp = zend_sprintf(s_tmp, "%ld", lval); /* SAFE */
TRACE_APPEND_STR("Resource id #");
TRACE_APPEND_STRL(s_tmp, l_tmp);
TRACE_APPEND_STR(", ");
break;
}
case IS_LONG: {
long lval = Z_LVAL_P(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_P(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: {
zend_string *class_name;
TRACE_APPEND_STR("Object(");
class_name = zend_get_object_classname(Z_OBJ_P(arg) TSRMLS_CC);
TRACE_APPEND_STRL(class_name->val, class_name->len);
TRACE_APPEND_STR("), ");
break;
}
default:
break;
}
*str_ptr = str;
}
/* }}} */
static void _build_trace_string(zval *frame, ulong index, zend_string **str_ptr, int *num TSRMLS_DC) /* {{{ */
{
char *s_tmp;
int len;
long line;
HashTable *ht;
zval *file, *tmp;
zend_string *str = *str_ptr;
if (Z_TYPE_P(frame) != IS_ARRAY) {
zend_error(E_WARNING, "Expected array for frame %lu", index);
return;
}
ht = Z_ARRVAL_P(frame);
s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 1 + 1);
len = sprintf(s_tmp, "#%d ", (*num)++);
TRACE_APPEND_STRL(s_tmp, len);
efree(s_tmp);
file = zend_hash_str_find(ht, "file", sizeof("file")-1);
if (file) {
if (Z_TYPE_P(file) != IS_STRING) {
zend_error(E_WARNING, "Function name is no string");
TRACE_APPEND_STR("[unknown function]");
} else{
tmp = zend_hash_str_find(ht, "line", sizeof("line")-1);
if (tmp) {
if (Z_TYPE_P(tmp) == IS_LONG) {
line = Z_LVAL_P(tmp);
} else {
zend_error(E_WARNING, "Line is no long");
line = 0;
}
} else {
line = 0;
}
s_tmp = emalloc(Z_STRLEN_P(file) + MAX_LENGTH_OF_LONG + 4 + 1);
len = sprintf(s_tmp, "%s(%ld): ", Z_STRVAL_P(file), line);
TRACE_APPEND_STRL(s_tmp, len);
efree(s_tmp);
}
} else {
TRACE_APPEND_STR("[internal function]: ");
}
TRACE_APPEND_KEY("class");
TRACE_APPEND_KEY("type");
TRACE_APPEND_KEY("function");
TRACE_APPEND_CHR('(');
tmp = zend_hash_str_find(ht, "args", sizeof("args")-1);
if (tmp) {
if (Z_TYPE_P(tmp) == IS_ARRAY) {
int last_len = str->len;
zval *arg;
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(tmp), arg) {
_build_trace_args(arg, &str TSRMLS_CC);
} ZEND_HASH_FOREACH_END();
if (last_len != str->len) {
str->len -= 2; /* remove last ', ' */
}
} else {
zend_error(E_WARNING, "args element is no array");
}
}
TRACE_APPEND_STR(")\n");
*str_ptr = str;
}
/* }}} */
/* {{{ proto string Exception::getTraceAsString()
Obtain the backtrace for the exception as a string (instead of an array) */
ZEND_METHOD(exception, getTraceAsString)
{
zval *trace, *frame;
ulong index;
zend_string *str, *key;
int num = 0, len;
char s_tmp[MAX_LENGTH_OF_LONG + 7 + 1 + 1];
DEFAULT_0_PARAMS;
str = STR_ALLOC(0, 0);
trace = zend_read_property(default_exception_ce, getThis(), "trace", sizeof("trace")-1, 1 TSRMLS_CC);
ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(trace), index, key, frame) {
_build_trace_string(frame, index, &str, &num TSRMLS_CC);
} ZEND_HASH_FOREACH_END();
len = sprintf(s_tmp, "#%d {main}", num);
TRACE_APPEND_STRL(s_tmp, len);
str->val[str->len] = '\0';
RETURN_NEW_STR(str);
}
/* }}} */
/* {{{ proto string Exception::getPrevious()
Return previous Exception or NULL. */
ZEND_METHOD(exception, getPrevious)
{
zval *previous;
DEFAULT_0_PARAMS;
previous = zend_read_property(default_exception_ce, getThis(), "previous", sizeof("previous")-1, 1 TSRMLS_CC);
RETURN_ZVAL(previous, 1, 0);
} /* }}} */
int zend_spprintf(char **message, int max_len, const char *format, ...) /* {{{ */
{
va_list arg;
int len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
zend_string *zend_strpprintf(int max_len, const char *format, ...) /* {{{ */
{
va_list arg;
zend_string *str;
va_start(arg, format);
str = zend_vstrpprintf(max_len, format, arg);
va_end(arg);
return str;
}
/* }}} */
/* {{{ proto string Exception::__toString()
Obtain the string representation of the Exception object */
ZEND_METHOD(exception, __toString)
{
zval message, file, line, trace, *exception;
zend_string *str, *prev_str;
zend_fcall_info fci;
zval fname;
DEFAULT_0_PARAMS;
str = STR_EMPTY_ALLOC();
exception = getThis();
ZVAL_STRINGL(&fname, "gettraceasstring", sizeof("gettraceasstring")-1);
while (exception && Z_TYPE_P(exception) == IS_OBJECT) {
prev_str = str;
_default_exception_get_entry(exception, "message", sizeof("message")-1, &message TSRMLS_CC);
_default_exception_get_entry(exception, "file", sizeof("file")-1, &file TSRMLS_CC);
_default_exception_get_entry(exception, "line", sizeof("line")-1, &line TSRMLS_CC);
convert_to_string(&message);
convert_to_string(&file);
convert_to_long(&line);
fci.size = sizeof(fci);
fci.function_table = &Z_OBJCE_P(exception)->function_table;
ZVAL_COPY_VALUE(&fci.function_name, &fname);
fci.symbol_table = NULL;
fci.object = Z_OBJ_P(exception);
fci.retval = &trace;
fci.param_count = 0;
fci.params = NULL;
fci.no_separation = 1;
zend_call_function(&fci, NULL TSRMLS_CC);
if (Z_TYPE(trace) != IS_STRING) {
zval_ptr_dtor(&trace);
ZVAL_UNDEF(&trace);
}
if (Z_STRLEN(message) > 0) {
str = zend_strpprintf(0, "exception '%s' with message '%s' in %s:%ld\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name->val, Z_STRVAL(message), Z_STRVAL(file), Z_LVAL(line),
(Z_TYPE(trace) == IS_STRING && Z_STRLEN(trace)) ? Z_STRVAL(trace) : "#0 {main}\n",
prev_str->len ? "\n\nNext " : "", prev_str->val);
} else {
str = zend_strpprintf(0, "exception '%s' in %s:%ld\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name->val, Z_STRVAL(file), Z_LVAL(line),
(Z_TYPE(trace) == IS_STRING && Z_STRLEN(trace)) ? Z_STRVAL(trace) : "#0 {main}\n",
prev_str->len ? "\n\nNext " : "", prev_str->val);
}
STR_RELEASE(prev_str);
zval_dtor(&message);
zval_dtor(&file);
zval_dtor(&line);
exception = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 0 TSRMLS_CC);
zval_ptr_dtor(&trace);
}
zval_dtor(&fname);
/* We store the result in the private property string so we can access
* the result in uncaught exception handlers without memleaks. */
zend_update_property_str(default_exception_ce, getThis(), "string", sizeof("string")-1, str TSRMLS_CC);
RETURN_STR(str);
}
/* }}} */
/* {{{ internal structs */
/* All functions that may be used in uncaught exception handlers must be final
* and must not throw exceptions. Otherwise we would need a facility to handle
* such exceptions in that handler.
* Also all getXY() methods are final because thy serve as read only access to
* their corresponding properties, no more, no less. If after all you need to
* override somthing then it is method __toString().
* And never try to change the state of exceptions and never implement anything
* that gives the user anything to accomplish this.
*/
ZEND_BEGIN_ARG_INFO_EX(arginfo_exception___construct, 0, 0, 0)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, code)
ZEND_ARG_INFO(0, previous)
ZEND_END_ARG_INFO()
const static zend_function_entry default_exception_functions[] = {
ZEND_ME(exception, __clone, NULL, ZEND_ACC_PRIVATE|ZEND_ACC_FINAL)
ZEND_ME(exception, __construct, arginfo_exception___construct, ZEND_ACC_PUBLIC)
ZEND_ME(exception, getMessage, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getCode, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getFile, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getLine, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getTrace, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getPrevious, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, getTraceAsString, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
ZEND_ME(exception, __toString, NULL, 0)
{NULL, NULL, NULL}
};
ZEND_BEGIN_ARG_INFO_EX(arginfo_error_exception___construct, 0, 0, 0)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, code)
ZEND_ARG_INFO(0, severity)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(0, lineno)
ZEND_ARG_INFO(0, previous)
ZEND_END_ARG_INFO()
static const zend_function_entry error_exception_functions[] = {
ZEND_ME(error_exception, __construct, arginfo_error_exception___construct, ZEND_ACC_PUBLIC)
ZEND_ME(error_exception, getSeverity, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
{NULL, NULL, NULL}
};
/* }}} */
void zend_register_default_exception(TSRMLS_D) /* {{{ */
{
zend_class_entry ce;
INIT_CLASS_ENTRY(ce, "Exception", default_exception_functions);
default_exception_ce = zend_register_internal_class(&ce TSRMLS_CC);
default_exception_ce->create_object = zend_default_exception_new;
memcpy(&default_exception_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
default_exception_handlers.clone_obj = NULL;
zend_declare_property_string(default_exception_ce, "message", sizeof("message")-1, "", ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_string(default_exception_ce, "string", sizeof("string")-1, "", ZEND_ACC_PRIVATE TSRMLS_CC);
zend_declare_property_long(default_exception_ce, "code", sizeof("code")-1, 0, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "file", sizeof("file")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "line", sizeof("line")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "trace", sizeof("trace")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
zend_declare_property_null(default_exception_ce, "previous", sizeof("previous")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
INIT_CLASS_ENTRY(ce, "ErrorException", error_exception_functions);
error_exception_ce = zend_register_internal_class_ex(&ce, default_exception_ce TSRMLS_CC);
error_exception_ce->create_object = zend_error_exception_new;
zend_declare_property_long(error_exception_ce, "severity", sizeof("severity")-1, E_ERROR, ZEND_ACC_PROTECTED TSRMLS_CC);
}
/* }}} */
ZEND_API zend_class_entry *zend_exception_get_default(TSRMLS_D) /* {{{ */
{
return default_exception_ce;
}
/* }}} */
ZEND_API zend_class_entry *zend_get_error_exception(TSRMLS_D) /* {{{ */
{
return error_exception_ce;
}
/* }}} */
ZEND_API zend_object *zend_throw_exception(zend_class_entry *exception_ce, const char *message, long code TSRMLS_DC) /* {{{ */
{
zval ex;
if (exception_ce) {
if (!instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
zend_error(E_NOTICE, "Exceptions must be derived from the Exception base class");
exception_ce = default_exception_ce;
}
} else {
exception_ce = default_exception_ce;
}
object_init_ex(&ex, exception_ce);
if (message) {
zend_update_property_string(default_exception_ce, &ex, "message", sizeof("message")-1, message TSRMLS_CC);
}
if (code) {
zend_update_property_long(default_exception_ce, &ex, "code", sizeof("code")-1, code TSRMLS_CC);
}
zend_throw_exception_internal(&ex TSRMLS_CC);
return Z_OBJ(ex);
}
/* }}} */
ZEND_API zend_object *zend_throw_exception_ex(zend_class_entry *exception_ce, long code TSRMLS_DC, const char *format, ...) /* {{{ */
{
va_list arg;
char *message;
zend_object *obj;
va_start(arg, format);
zend_vspprintf(&message, 0, format, arg);
va_end(arg);
obj = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
efree(message);
return obj;
}
/* }}} */
ZEND_API zend_object *zend_throw_error_exception(zend_class_entry *exception_ce, const char *message, long code, int severity TSRMLS_DC) /* {{{ */
{
zval ex;
zend_object *obj = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
ZVAL_OBJ(&ex, obj);
zend_update_property_long(default_exception_ce, &ex, "severity", sizeof("severity")-1, severity TSRMLS_CC);
return obj;
}
/* }}} */
static void zend_error_va(int type, const char *file, uint lineno, const char *format, ...) /* {{{ */
{
va_list args;
va_start(args, format);
zend_error_cb(type, file, lineno, format, args);
va_end(args);
}
/* }}} */
/* This function doesn't return if it uses E_ERROR */
ZEND_API void zend_exception_error(zend_object *ex, int severity TSRMLS_DC) /* {{{ */
{
zval exception;
zend_class_entry *ce_exception;
ZVAL_OBJ(&exception, ex);
ce_exception = Z_OBJCE(exception);
if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
zval tmp, *str, *file, *line;
EG(exception) = NULL;
zend_call_method_with_0_params(&exception, ce_exception, NULL, "__tostring", &tmp);
if (!EG(exception)) {
if (Z_TYPE(tmp) != IS_STRING) {
zend_error(E_WARNING, "%s::__toString() must return a string", ce_exception->name->val);
} else {
zend_update_property_string(default_exception_ce, &exception, "string", sizeof("string")-1, EG(exception) ? ce_exception->name->val : Z_STRVAL(tmp) TSRMLS_CC);
}
}
zval_ptr_dtor(&tmp);
if (EG(exception)) {
zval zv;
ZVAL_OBJ(&zv, EG(exception));
/* do the best we can to inform about the inner exception */
if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
file = zend_read_property(default_exception_ce, &zv, "file", sizeof("file")-1, 1 TSRMLS_CC);
line = zend_read_property(default_exception_ce, &zv, "line", sizeof("line")-1, 1 TSRMLS_CC);
convert_to_string(file);
file = (Z_STRLEN_P(file) > 0) ? file : NULL;
line = (Z_TYPE_P(line) == IS_LONG) ? line : NULL;
} else {
file = NULL;
line = NULL;
}
zend_error_va(E_WARNING, file ? Z_STRVAL_P(file) : NULL, line ? Z_LVAL_P(line) : 0, "Uncaught %s in exception handling during call to %s::__tostring()", Z_OBJCE(zv)->name->val, ce_exception->name->val);
}
str = zend_read_property(default_exception_ce, &exception, "string", sizeof("string")-1, 1 TSRMLS_CC);
file = zend_read_property(default_exception_ce, &exception, "file", sizeof("file")-1, 1 TSRMLS_CC);
line = zend_read_property(default_exception_ce, &exception, "line", sizeof("line")-1, 1 TSRMLS_CC);
convert_to_string(str);
convert_to_string(file);
convert_to_long(line);
zend_error_va(severity, (Z_STRLEN_P(file) > 0) ? Z_STRVAL_P(file) : NULL, Z_LVAL_P(line), "Uncaught %s\n thrown", Z_STRVAL_P(str));
} else {
zend_error(severity, "Uncaught exception '%s'", ce_exception->name->val);
}
}
/* }}} */
ZEND_API void zend_throw_exception_object(zval *exception TSRMLS_DC) /* {{{ */
{
zend_class_entry *exception_ce;
if (exception == NULL || Z_TYPE_P(exception) != IS_OBJECT) {
zend_error(E_ERROR, "Need to supply an object when throwing an exception");
}
exception_ce = Z_OBJCE_P(exception);
if (!exception_ce || !instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
zend_error(E_ERROR, "Exceptions must be valid objects derived from the Exception base class");
}
zend_throw_exception_internal(exception TSRMLS_CC);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
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