php-src/Zend/zend_exceptions.c
2014-10-20 12:51:02 +04:00

879 lines
27 KiB
C

/*
+----------------------------------------------------------------------+
| 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"
#include "zend_smart_str.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;
}
}
/* }}} */
ZEND_API void zend_throw_exception_internal(zval *exception TSRMLS_DC) /* {{{ */
{
#ifdef HAVE_DTRACE
if (DTRACE_EXCEPTION_THROWN_ENABLED()) {
if (exception != NULL) {
DTRACE_EXCEPTION_THROWN(Z_OBJ_P(exception)->ce->name->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;
zend_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;
zend_long code = 0, severity = E_ERROR, lineno;
zval *object, *previous = NULL;
int argc = ZEND_NUM_ARGS();
size_t 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; \
}
#define GET_PROPERTY(object, name) \
zend_read_property(default_exception_ce, (object), name, sizeof(name) - 1, 0 TSRMLS_CC)
#define GET_PROPERTY_SILENT(object, name) \
zend_read_property(default_exception_ce, (object), name, sizeof(name) - 1, 1 TSRMLS_CC)
/* {{{ proto string Exception::getFile()
Get the file in which the exception occurred */
ZEND_METHOD(exception, getFile)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY(getThis(), "file"));
}
/* }}} */
/* {{{ proto int Exception::getLine()
Get the line in which the exception occurred */
ZEND_METHOD(exception, getLine)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY(getThis(), "line"));
}
/* }}} */
/* {{{ proto string Exception::getMessage()
Get the exception message */
ZEND_METHOD(exception, getMessage)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY(getThis(), "message"));
}
/* }}} */
/* {{{ proto int Exception::getCode()
Get the exception code */
ZEND_METHOD(exception, getCode)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY(getThis(), "code"));
}
/* }}} */
/* {{{ proto array Exception::getTrace()
Get the stack trace for the location in which the exception occurred */
ZEND_METHOD(exception, getTrace)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY(getThis(), "trace"));
}
/* }}} */
/* {{{ proto int ErrorException::getSeverity()
Get the exception severity */
ZEND_METHOD(error_exception, getSeverity)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY(getThis(), "severity"));
}
/* }}} */
#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); \
smart_str_appends(str, "[unknown]"); \
} else { \
smart_str_append(str, Z_STR_P(tmp)); \
} \
} \
} while (0)
/* Windows uses VK_ESCAPE instead of \e */
#ifndef VK_ESCAPE
#define VK_ESCAPE '\e'
#endif
static size_t compute_escaped_string_len(const char *s, size_t l) {
size_t i, len = l;
for (i = 0; i < l; ++i) {
char c = s[i];
if (c == '\n' || c == '\r' || c == '\t' ||
c == '\f' || c == '\v' || c == '\\' || c == VK_ESCAPE) {
len += 1;
} else if (c < 32 || c > 126) {
len += 3;
}
}
return len;
}
static void smart_str_append_escaped(smart_str *str, const char *s, size_t l) {
char *res;
size_t i, len = compute_escaped_string_len(s, l);
smart_str_alloc(str, len, 0);
res = &str->s->val[str->s->len];
str->s->len += len;
for (i = 0; i < l; ++i) {
char c = s[i];
if (c < 32 || c == '\\' || c > 126) {
*res++ = '\\';
switch (c) {
case '\n': *res++ = 'n'; break;
case '\r': *res++ = 'r'; break;
case '\t': *res++ = 't'; break;
case '\f': *res++ = 'f'; break;
case '\v': *res++ = 'v'; break;
case '\\': *res++ = '\\'; break;
case VK_ESCAPE: *res++ = 'e'; break;
default:
*res++ = 'x';
if ((c >> 4) < 10) {
*res++ = (c >> 4) + '0';
} else {
*res++ = (c >> 4) + 'A' - 10;
}
if ((c & 0xf) < 10) {
*res++ = (c & 0xf) + '0';
} else {
*res++ = (c & 0xf) + 'A' - 10;
}
}
} else {
*res++ = c;
}
}
}
static void _build_trace_args(zval *arg, smart_str *str TSRMLS_DC) /* {{{ */
{
/* 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:
smart_str_appends(str, "NULL, ");
break;
case IS_STRING:
smart_str_appendc(str, '\'');
smart_str_append_escaped(str, Z_STRVAL_P(arg), MIN(Z_STRLEN_P(arg), 15));
if (Z_STRLEN_P(arg) > 15) {
smart_str_appends(str, "...', ");
} else {
smart_str_appends(str, "', ");
}
break;
case IS_FALSE:
smart_str_appends(str, "false, ");
break;
case IS_TRUE:
smart_str_appends(str, "true, ");
break;
case IS_RESOURCE:
smart_str_appends(str, "Resource id #");
smart_str_append_long(str, Z_RES_HANDLE_P(arg));
smart_str_appends(str, ", ");
break;
case IS_LONG:
smart_str_append_long(str, Z_LVAL_P(arg));
smart_str_appends(str, ", ");
break;
case IS_DOUBLE: {
double dval = Z_DVAL_P(arg);
char *s_tmp = emalloc(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
int l_tmp = zend_sprintf(s_tmp, "%.*G", (int) EG(precision), dval); /* SAFE */
smart_str_appendl(str, s_tmp, l_tmp);
smart_str_appends(str, ", ");
efree(s_tmp);
break;
}
case IS_ARRAY:
smart_str_appends(str, "Array, ");
break;
case IS_OBJECT:
smart_str_appends(str, "Object(");
smart_str_append(str, Z_OBJCE_P(arg)->name);
smart_str_appends(str, "), ");
break;
}
}
/* }}} */
static void _build_trace_string(smart_str *str, HashTable *ht, uint32_t num TSRMLS_DC) /* {{{ */
{
zval *file, *tmp;
smart_str_appendc(str, '#');
smart_str_append_long(str, num);
smart_str_appendc(str, ' ');
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");
smart_str_appends(str, "[unknown function]");
} else{
zend_long line;
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;
}
smart_str_append(str, Z_STR_P(file));
smart_str_appendc(str, '(');
smart_str_append_long(str, line);
smart_str_appends(str, "): ");
}
} else {
smart_str_appends(str, "[internal function]: ");
}
TRACE_APPEND_KEY("class");
TRACE_APPEND_KEY("type");
TRACE_APPEND_KEY("function");
smart_str_appendc(str, '(');
tmp = zend_hash_str_find(ht, "args", sizeof("args")-1);
if (tmp) {
if (Z_TYPE_P(tmp) == IS_ARRAY) {
size_t last_len = str->s->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->s->len) {
str->s->len -= 2; /* remove last ', ' */
}
} else {
zend_error(E_WARNING, "args element is no array");
}
}
smart_str_appends(str, ")\n");
}
/* }}} */
/* {{{ proto string Exception::getTraceAsString()
Obtain the backtrace for the exception as a string (instead of an array) */
ZEND_METHOD(exception, getTraceAsString)
{
zval *trace, *frame;
zend_ulong index;
smart_str str = {0};
uint32_t num = 0;
DEFAULT_0_PARAMS;
trace = zend_read_property(default_exception_ce, getThis(), "trace", sizeof("trace")-1, 1 TSRMLS_CC);
ZEND_HASH_FOREACH_NUM_KEY_VAL(Z_ARRVAL_P(trace), index, frame) {
if (Z_TYPE_P(frame) != IS_ARRAY) {
zend_error(E_WARNING, "Expected array for frame %pu", index);
continue;
}
_build_trace_string(&str, Z_ARRVAL_P(frame), num++ TSRMLS_CC);
} ZEND_HASH_FOREACH_END();
smart_str_appendc(&str, '#');
smart_str_append_long(&str, num);
smart_str_appends(&str, " {main}");
smart_str_0(&str);
RETURN_NEW_STR(str.s);
}
/* }}} */
/* {{{ proto string Exception::getPrevious()
Return previous Exception or NULL. */
ZEND_METHOD(exception, getPrevious)
{
DEFAULT_0_PARAMS;
ZVAL_COPY(return_value, GET_PROPERTY_SILENT(getThis(), "previous"));
} /* }}} */
size_t zend_spprintf(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
va_list arg;
size_t len;
va_start(arg, format);
len = zend_vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/* }}} */
zend_string *zend_strpprintf(size_t 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 trace, *exception;
zend_string *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) {
zend_string *prev_str = str;
zend_string *message = zval_get_string(GET_PROPERTY(exception, "message"));
zend_string *file = zval_get_string(GET_PROPERTY(exception, "file"));
zend_long line = zval_get_long(GET_PROPERTY(exception, "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 (message->len > 0) {
str = zend_strpprintf(0, "exception '%s' with message '%s' in %s:" ZEND_LONG_FMT
"\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name->val, message->val, file->val, 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:" ZEND_LONG_FMT
"\nStack trace:\n%s%s%s",
Z_OBJCE_P(exception)->name->val, file->val, line,
(Z_TYPE(trace) == IS_STRING && Z_STRLEN(trace)) ? Z_STRVAL(trace) : "#0 {main}\n",
prev_str->len ? "\n\nNext " : "", prev_str->val);
}
zend_string_release(prev_str);
zend_string_release(message);
zend_string_release(file);
zval_ptr_dtor(&trace);
exception = GET_PROPERTY(exception, "previous");
}
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, zend_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, zend_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, zend_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;
zend_string *str, *file = NULL;
zend_long line = 0;
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 = zval_get_string(GET_PROPERTY_SILENT(&zv, "file"));
line = zval_get_long(GET_PROPERTY_SILENT(&zv, "line"));
}
zend_error_va(E_WARNING, (file && file->len > 0) ? file->val : NULL, line,
"Uncaught %s in exception handling during call to %s::__tostring()",
Z_OBJCE(zv)->name->val, ce_exception->name->val);
if (file) {
zend_string_release(file);
}
}
str = zval_get_string(GET_PROPERTY_SILENT(&exception, "string"));
file = zval_get_string(GET_PROPERTY_SILENT(&exception, "file"));
line = zval_get_long(GET_PROPERTY_SILENT(&exception, "line"));
zend_error_va(severity, (file && file->len > 0) ? file->val : NULL, line,
"Uncaught %s\n thrown", str->val);
zend_string_release(str);
zend_string_release(file);
} 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:
*/