Annotation of embedaddon/php/Zend/zend_exceptions.c, revision 1.1.1.3
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
1.1.1.3 ! misho 5: | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) |
1.1 misho 6: +----------------------------------------------------------------------+
7: | This source file is subject to version 2.00 of the Zend license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.zend.com/license/2_00.txt. |
11: | If you did not receive a copy of the Zend license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@zend.com so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Marcus Boerger <helly@php.net> |
17: | Sterling Hughes <sterling@php.net> |
18: | Zeev Suraski <zeev@zend.com> |
19: +----------------------------------------------------------------------+
20: */
21:
1.1.1.2 misho 22: /* $Id$ */
1.1 misho 23:
24: #include "zend.h"
25: #include "zend_API.h"
26: #include "zend_builtin_functions.h"
27: #include "zend_interfaces.h"
28: #include "zend_exceptions.h"
29: #include "zend_vm.h"
1.1.1.2 misho 30: #include "zend_dtrace.h"
1.1 misho 31:
1.1.1.3 ! misho 32: static zend_class_entry *default_exception_ce;
! 33: static zend_class_entry *error_exception_ce;
1.1 misho 34: static zend_object_handlers default_exception_handlers;
35: ZEND_API void (*zend_throw_exception_hook)(zval *ex TSRMLS_DC);
36:
37: void zend_exception_set_previous(zval *exception, zval *add_previous TSRMLS_DC)
38: {
39: zval *previous;
40:
41: if (exception == add_previous || !add_previous || !exception) {
42: return;
43: }
44: if (Z_TYPE_P(add_previous) != IS_OBJECT && !instanceof_function(Z_OBJCE_P(add_previous), default_exception_ce TSRMLS_CC)) {
45: zend_error(E_ERROR, "Cannot set non exception as previous exception");
46: return;
47: }
48: while (exception && exception != add_previous && Z_OBJ_HANDLE_P(exception) != Z_OBJ_HANDLE_P(add_previous)) {
49: previous = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 1 TSRMLS_CC);
50: if (Z_TYPE_P(previous) == IS_NULL) {
51: zend_update_property(default_exception_ce, exception, "previous", sizeof("previous")-1, add_previous TSRMLS_CC);
52: Z_DELREF_P(add_previous);
53: return;
54: }
55: exception = previous;
56: }
57: }
58:
59: void zend_exception_save(TSRMLS_D) /* {{{ */
60: {
61: if (EG(prev_exception)) {
62: zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
63: }
64: if (EG(exception)) {
65: EG(prev_exception) = EG(exception);
66: }
67: EG(exception) = NULL;
68: }
69: /* }}} */
70:
71: void zend_exception_restore(TSRMLS_D) /* {{{ */
72: {
73: if (EG(prev_exception)) {
74: if (EG(exception)) {
75: zend_exception_set_previous(EG(exception), EG(prev_exception) TSRMLS_CC);
76: } else {
77: EG(exception) = EG(prev_exception);
78: }
79: EG(prev_exception) = NULL;
80: }
81: }
82: /* }}} */
83:
84: void zend_throw_exception_internal(zval *exception TSRMLS_DC) /* {{{ */
85: {
1.1.1.2 misho 86: #ifdef HAVE_DTRACE
87: if (DTRACE_EXCEPTION_THROWN_ENABLED()) {
88: char *classname;
89: int name_len;
90:
91: if (exception != NULL) {
92: zend_get_object_classname(exception, &classname, &name_len TSRMLS_CC);
93: DTRACE_EXCEPTION_THROWN(classname);
94: } else {
95: DTRACE_EXCEPTION_THROWN(NULL);
96: }
97: }
98: #endif /* HAVE_DTRACE */
99:
1.1 misho 100: if (exception != NULL) {
101: zval *previous = EG(exception);
102: zend_exception_set_previous(exception, EG(exception) TSRMLS_CC);
103: EG(exception) = exception;
104: if (previous) {
105: return;
106: }
107: }
108: if (!EG(current_execute_data)) {
109: if(EG(exception)) {
110: zend_exception_error(EG(exception), E_ERROR TSRMLS_CC);
111: }
112: zend_error(E_ERROR, "Exception thrown without a stack frame");
113: }
114:
115: if (zend_throw_exception_hook) {
116: zend_throw_exception_hook(exception TSRMLS_CC);
117: }
118:
119: if (EG(current_execute_data)->opline == NULL ||
120: (EG(current_execute_data)->opline+1)->opcode == ZEND_HANDLE_EXCEPTION) {
121: /* no need to rethrow the exception */
122: return;
123: }
124: EG(opline_before_exception) = EG(current_execute_data)->opline;
125: EG(current_execute_data)->opline = EG(exception_op);
126: }
127: /* }}} */
128:
129: ZEND_API void zend_clear_exception(TSRMLS_D) /* {{{ */
130: {
131: if (EG(prev_exception)) {
132: zval_ptr_dtor(&EG(prev_exception));
133: EG(prev_exception) = NULL;
134: }
135: if (!EG(exception)) {
136: return;
137: }
138: zval_ptr_dtor(&EG(exception));
139: EG(exception) = NULL;
140: EG(current_execute_data)->opline = EG(opline_before_exception);
141: #if ZEND_DEBUG
142: EG(opline_before_exception) = NULL;
143: #endif
144: }
145: /* }}} */
146:
147: static zend_object_value zend_default_exception_new_ex(zend_class_entry *class_type, int skip_top_traces TSRMLS_DC) /* {{{ */
148: {
1.1.1.2 misho 149: zval obj;
1.1 misho 150: zend_object *object;
151: zval *trace;
152:
153: Z_OBJVAL(obj) = zend_objects_new(&object, class_type TSRMLS_CC);
154: Z_OBJ_HT(obj) = &default_exception_handlers;
155:
1.1.1.2 misho 156: object_properties_init(object, class_type);
1.1 misho 157:
158: ALLOC_ZVAL(trace);
159: Z_UNSET_ISREF_P(trace);
160: Z_SET_REFCOUNT_P(trace, 0);
1.1.1.2 misho 161: zend_fetch_debug_backtrace(trace, skip_top_traces, 0, 0 TSRMLS_CC);
1.1 misho 162:
163: zend_update_property_string(default_exception_ce, &obj, "file", sizeof("file")-1, zend_get_executed_filename(TSRMLS_C) TSRMLS_CC);
164: zend_update_property_long(default_exception_ce, &obj, "line", sizeof("line")-1, zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
165: zend_update_property(default_exception_ce, &obj, "trace", sizeof("trace")-1, trace TSRMLS_CC);
166:
167: return Z_OBJVAL(obj);
168: }
169: /* }}} */
170:
171: static zend_object_value zend_default_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
172: {
173: return zend_default_exception_new_ex(class_type, 0 TSRMLS_CC);
174: }
175: /* }}} */
176:
177: static zend_object_value zend_error_exception_new(zend_class_entry *class_type TSRMLS_DC) /* {{{ */
178: {
179: return zend_default_exception_new_ex(class_type, 2 TSRMLS_CC);
180: }
181: /* }}} */
182:
183: /* {{{ proto Exception Exception::__clone()
184: Clone the exception object */
185: ZEND_METHOD(exception, __clone)
186: {
187: /* Should never be executable */
188: zend_throw_exception(NULL, "Cannot clone object using __clone()", 0 TSRMLS_CC);
189: }
190: /* }}} */
191:
192: /* {{{ proto Exception::__construct(string message, int code [, Exception previous])
193: Exception constructor */
194: ZEND_METHOD(exception, __construct)
195: {
196: char *message = NULL;
197: long code = 0;
198: zval *object, *previous = NULL;
199: int argc = ZEND_NUM_ARGS(), message_len;
200:
201: if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|slO!", &message, &message_len, &code, &previous, default_exception_ce) == FAILURE) {
202: zend_error(E_ERROR, "Wrong parameters for Exception([string $exception [, long $code [, Exception $previous = NULL]]])");
203: }
204:
205: object = getThis();
206:
207: if (message) {
1.1.1.2 misho 208: zend_update_property_stringl(default_exception_ce, object, "message", sizeof("message")-1, message, message_len TSRMLS_CC);
1.1 misho 209: }
210:
211: if (code) {
212: zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
213: }
214:
215: if (previous) {
216: zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
217: }
218: }
219: /* }}} */
220:
221: /* {{{ proto ErrorException::__construct(string message, int code, int severity [, string filename [, int lineno [, Exception previous]]])
222: ErrorException constructor */
223: ZEND_METHOD(error_exception, __construct)
224: {
225: char *message = NULL, *filename = NULL;
226: long code = 0, severity = E_ERROR, lineno;
227: zval *object, *previous = NULL;
228: int argc = ZEND_NUM_ARGS(), message_len, filename_len;
229:
230: 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) {
231: zend_error(E_ERROR, "Wrong parameters for ErrorException([string $exception [, long $code, [ long $severity, [ string $filename, [ long $lineno [, Exception $previous = NULL]]]]]])");
232: }
233:
234: object = getThis();
235:
236: if (message) {
237: zend_update_property_string(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
238: }
239:
240: if (code) {
241: zend_update_property_long(default_exception_ce, object, "code", sizeof("code")-1, code TSRMLS_CC);
242: }
243:
244: if (previous) {
245: zend_update_property(default_exception_ce, object, "previous", sizeof("previous")-1, previous TSRMLS_CC);
246: }
247:
248: zend_update_property_long(default_exception_ce, object, "severity", sizeof("severity")-1, severity TSRMLS_CC);
249:
250: if (argc >= 4) {
251: zend_update_property_string(default_exception_ce, object, "file", sizeof("file")-1, filename TSRMLS_CC);
252: if (argc < 5) {
253: lineno = 0; /* invalidate lineno */
254: }
255: zend_update_property_long(default_exception_ce, object, "line", sizeof("line")-1, lineno TSRMLS_CC);
256: }
257: }
258: /* }}} */
259:
260: #define DEFAULT_0_PARAMS \
261: if (zend_parse_parameters_none() == FAILURE) { \
262: return; \
263: }
264:
265: static void _default_exception_get_entry(zval *object, char *name, int name_len, zval *return_value TSRMLS_DC) /* {{{ */
266: {
267: zval *value;
268:
269: value = zend_read_property(default_exception_ce, object, name, name_len, 0 TSRMLS_CC);
270:
271: *return_value = *value;
272: zval_copy_ctor(return_value);
273: INIT_PZVAL(return_value);
274: }
275: /* }}} */
276:
277: /* {{{ proto string Exception::getFile()
278: Get the file in which the exception occurred */
279: ZEND_METHOD(exception, getFile)
280: {
281: DEFAULT_0_PARAMS;
282:
283: _default_exception_get_entry(getThis(), "file", sizeof("file")-1, return_value TSRMLS_CC);
284: }
285: /* }}} */
286:
287: /* {{{ proto int Exception::getLine()
288: Get the line in which the exception occurred */
289: ZEND_METHOD(exception, getLine)
290: {
291: DEFAULT_0_PARAMS;
292:
293: _default_exception_get_entry(getThis(), "line", sizeof("line")-1, return_value TSRMLS_CC);
294: }
295: /* }}} */
296:
297: /* {{{ proto string Exception::getMessage()
298: Get the exception message */
299: ZEND_METHOD(exception, getMessage)
300: {
301: DEFAULT_0_PARAMS;
302:
303: _default_exception_get_entry(getThis(), "message", sizeof("message")-1, return_value TSRMLS_CC);
304: }
305: /* }}} */
306:
307: /* {{{ proto int Exception::getCode()
308: Get the exception code */
309: ZEND_METHOD(exception, getCode)
310: {
311: DEFAULT_0_PARAMS;
312:
313: _default_exception_get_entry(getThis(), "code", sizeof("code")-1, return_value TSRMLS_CC);
314: }
315: /* }}} */
316:
317: /* {{{ proto array Exception::getTrace()
318: Get the stack trace for the location in which the exception occurred */
319: ZEND_METHOD(exception, getTrace)
320: {
321: DEFAULT_0_PARAMS;
322:
323: _default_exception_get_entry(getThis(), "trace", sizeof("trace")-1, return_value TSRMLS_CC);
324: }
325: /* }}} */
326:
327: /* {{{ proto int ErrorException::getSeverity()
328: Get the exception severity */
329: ZEND_METHOD(error_exception, getSeverity)
330: {
331: DEFAULT_0_PARAMS;
332:
333: _default_exception_get_entry(getThis(), "severity", sizeof("severity")-1, return_value TSRMLS_CC);
334: }
335: /* }}} */
336:
337: /* {{{ gettraceasstring() macros */
338: #define TRACE_APPEND_CHR(chr) \
339: *str = (char*)erealloc(*str, *len + 1 + 1); \
340: (*str)[(*len)++] = chr
341:
342: #define TRACE_APPEND_STRL(val, vallen) \
343: { \
344: int l = vallen; \
345: *str = (char*)erealloc(*str, *len + l + 1); \
346: memcpy((*str) + *len, val, l); \
347: *len += l; \
348: }
349:
350: #define TRACE_APPEND_STR(val) \
351: TRACE_APPEND_STRL(val, sizeof(val)-1)
352:
1.1.1.3 ! misho 353: #define TRACE_APPEND_KEY(key) \
! 354: if (zend_hash_find(ht, key, sizeof(key), (void**)&tmp) == SUCCESS) { \
! 355: if (Z_TYPE_PP(tmp) != IS_STRING) { \
! 356: zend_error(E_WARNING, "Value for %s is no string", key); \
! 357: TRACE_APPEND_STR("[unknown]"); \
! 358: } else { \
! 359: TRACE_APPEND_STRL(Z_STRVAL_PP(tmp), Z_STRLEN_PP(tmp)); \
! 360: } \
1.1 misho 361: }
362:
363: /* }}} */
364:
365: static int _build_trace_args(zval **arg TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
366: {
367: char **str;
368: int *len;
369:
370: str = va_arg(args, char**);
371: len = va_arg(args, int*);
372:
373: /* the trivial way would be to do:
374: * conver_to_string_ex(arg);
375: * append it and kill the now tmp arg.
376: * but that could cause some E_NOTICE and also damn long lines.
377: */
378:
379: switch (Z_TYPE_PP(arg)) {
380: case IS_NULL:
381: TRACE_APPEND_STR("NULL, ");
382: break;
383: case IS_STRING: {
384: int l_added;
385: TRACE_APPEND_CHR('\'');
386: if (Z_STRLEN_PP(arg) > 15) {
387: TRACE_APPEND_STRL(Z_STRVAL_PP(arg), 15);
388: TRACE_APPEND_STR("...', ");
389: l_added = 15 + 6 + 1; /* +1 because of while (--l_added) */
390: } else {
391: l_added = Z_STRLEN_PP(arg);
392: TRACE_APPEND_STRL(Z_STRVAL_PP(arg), l_added);
393: TRACE_APPEND_STR("', ");
394: l_added += 3 + 1;
395: }
396: while (--l_added) {
397: if ((*str)[*len - l_added] < 32) {
398: (*str)[*len - l_added] = '?';
399: }
400: }
401: break;
402: }
403: case IS_BOOL:
404: if (Z_LVAL_PP(arg)) {
405: TRACE_APPEND_STR("true, ");
406: } else {
407: TRACE_APPEND_STR("false, ");
408: }
409: break;
410: case IS_RESOURCE:
411: TRACE_APPEND_STR("Resource id #");
412: /* break; */
413: case IS_LONG: {
414: long lval = Z_LVAL_PP(arg);
415: char s_tmp[MAX_LENGTH_OF_LONG + 1];
416: int l_tmp = zend_sprintf(s_tmp, "%ld", lval); /* SAFE */
417: TRACE_APPEND_STRL(s_tmp, l_tmp);
418: TRACE_APPEND_STR(", ");
419: break;
420: }
421: case IS_DOUBLE: {
422: double dval = Z_DVAL_PP(arg);
423: char *s_tmp;
424: int l_tmp;
425:
426: s_tmp = emalloc(MAX_LENGTH_OF_DOUBLE + EG(precision) + 1);
427: l_tmp = zend_sprintf(s_tmp, "%.*G", (int) EG(precision), dval); /* SAFE */
428: TRACE_APPEND_STRL(s_tmp, l_tmp);
429: /* %G already handles removing trailing zeros from the fractional part, yay */
430: efree(s_tmp);
431: TRACE_APPEND_STR(", ");
432: break;
433: }
434: case IS_ARRAY:
435: TRACE_APPEND_STR("Array, ");
436: break;
437: case IS_OBJECT: {
1.1.1.2 misho 438: const char *class_name;
1.1 misho 439: zend_uint class_name_len;
440: int dup;
441:
442: TRACE_APPEND_STR("Object(");
443:
444: dup = zend_get_object_classname(*arg, &class_name, &class_name_len TSRMLS_CC);
445:
446: TRACE_APPEND_STRL(class_name, class_name_len);
447: if(!dup) {
1.1.1.2 misho 448: efree((char*)class_name);
1.1 misho 449: }
450:
451: TRACE_APPEND_STR("), ");
452: break;
453: }
454: default:
455: break;
456: }
457: return ZEND_HASH_APPLY_KEEP;
458: }
459: /* }}} */
460:
461: static int _build_trace_string(zval **frame TSRMLS_DC, int num_args, va_list args, zend_hash_key *hash_key) /* {{{ */
462: {
463: char *s_tmp, **str;
464: int *len, *num;
465: long line;
466: HashTable *ht = Z_ARRVAL_PP(frame);
467: zval **file, **tmp;
468:
1.1.1.3 ! misho 469: if (Z_TYPE_PP(frame) != IS_ARRAY) {
! 470: zend_error(E_WARNING, "Expected array for frame %lu", hash_key->h);
! 471: return ZEND_HASH_APPLY_KEEP;
! 472: }
! 473:
1.1 misho 474: str = va_arg(args, char**);
475: len = va_arg(args, int*);
476: num = va_arg(args, int*);
477:
478: s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 1 + 1);
479: sprintf(s_tmp, "#%d ", (*num)++);
480: TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
481: efree(s_tmp);
482: if (zend_hash_find(ht, "file", sizeof("file"), (void**)&file) == SUCCESS) {
1.1.1.3 ! misho 483: if (Z_TYPE_PP(file) != IS_STRING) {
! 484: zend_error(E_WARNING, "Function name is no string");
! 485: TRACE_APPEND_STR("[unknown function]");
! 486: } else{
! 487: if (zend_hash_find(ht, "line", sizeof("line"), (void**)&tmp) == SUCCESS) {
! 488: if (Z_TYPE_PP(tmp) == IS_LONG) {
! 489: line = Z_LVAL_PP(tmp);
! 490: } else {
! 491: zend_error(E_WARNING, "Line is no long");
! 492: line = 0;
! 493: }
! 494: } else {
! 495: line = 0;
! 496: }
! 497: s_tmp = emalloc(Z_STRLEN_PP(file) + MAX_LENGTH_OF_LONG + 4 + 1);
! 498: sprintf(s_tmp, "%s(%ld): ", Z_STRVAL_PP(file), line);
! 499: TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
! 500: efree(s_tmp);
1.1 misho 501: }
502: } else {
503: TRACE_APPEND_STR("[internal function]: ");
504: }
505: TRACE_APPEND_KEY("class");
506: TRACE_APPEND_KEY("type");
507: TRACE_APPEND_KEY("function");
508: TRACE_APPEND_CHR('(');
509: if (zend_hash_find(ht, "args", sizeof("args"), (void**)&tmp) == SUCCESS) {
1.1.1.3 ! misho 510: if (Z_TYPE_PP(tmp) == IS_ARRAY) {
! 511: int last_len = *len;
! 512: zend_hash_apply_with_arguments(Z_ARRVAL_PP(tmp) TSRMLS_CC, (apply_func_args_t)_build_trace_args, 2, str, len);
! 513: if (last_len != *len) {
! 514: *len -= 2; /* remove last ', ' */
! 515: }
! 516: } else {
! 517: zend_error(E_WARNING, "args element is no array");
1.1 misho 518: }
519: }
520: TRACE_APPEND_STR(")\n");
521: return ZEND_HASH_APPLY_KEEP;
522: }
523: /* }}} */
524:
525: /* {{{ proto string Exception::getTraceAsString()
526: Obtain the backtrace for the exception as a string (instead of an array) */
527: ZEND_METHOD(exception, getTraceAsString)
528: {
529: zval *trace;
530: char *res, **str, *s_tmp;
531: int res_len = 0, *len = &res_len, num = 0;
532:
533: DEFAULT_0_PARAMS;
534:
535: res = estrdup("");
536: str = &res;
537:
538: trace = zend_read_property(default_exception_ce, getThis(), "trace", sizeof("trace")-1, 1 TSRMLS_CC);
539: zend_hash_apply_with_arguments(Z_ARRVAL_P(trace) TSRMLS_CC, (apply_func_args_t)_build_trace_string, 3, str, len, &num);
540:
541: s_tmp = emalloc(1 + MAX_LENGTH_OF_LONG + 7 + 1);
542: sprintf(s_tmp, "#%d {main}", num);
543: TRACE_APPEND_STRL(s_tmp, strlen(s_tmp));
544: efree(s_tmp);
545:
546: res[res_len] = '\0';
547: RETURN_STRINGL(res, res_len, 0);
548: }
549: /* }}} */
550:
551: /* {{{ proto string Exception::getPrevious()
552: Return previous Exception or NULL. */
553: ZEND_METHOD(exception, getPrevious)
554: {
555: zval *previous;
556:
557: DEFAULT_0_PARAMS;
558:
559: previous = zend_read_property(default_exception_ce, getThis(), "previous", sizeof("previous")-1, 1 TSRMLS_CC);
560: RETURN_ZVAL(previous, 1, 0);
561: }
562:
563: int zend_spprintf(char **message, int max_len, char *format, ...) /* {{{ */
564: {
565: va_list arg;
566: int len;
567:
568: va_start(arg, format);
569: len = zend_vspprintf(message, max_len, format, arg);
570: va_end(arg);
571: return len;
572: }
573: /* }}} */
574:
575: /* {{{ proto string Exception::__toString()
576: Obtain the string representation of the Exception object */
577: ZEND_METHOD(exception, __toString)
578: {
579: zval message, file, line, *trace, *exception;
580: char *str, *prev_str;
581: int len = 0;
582: zend_fcall_info fci;
583: zval fname;
584:
585: DEFAULT_0_PARAMS;
586:
587: str = estrndup("", 0);
588:
589: exception = getThis();
590: ZVAL_STRINGL(&fname, "gettraceasstring", sizeof("gettraceasstring")-1, 1);
591:
592: while (exception && Z_TYPE_P(exception) == IS_OBJECT) {
593: prev_str = str;
594: _default_exception_get_entry(exception, "message", sizeof("message")-1, &message TSRMLS_CC);
595: _default_exception_get_entry(exception, "file", sizeof("file")-1, &file TSRMLS_CC);
596: _default_exception_get_entry(exception, "line", sizeof("line")-1, &line TSRMLS_CC);
597:
598: convert_to_string(&message);
599: convert_to_string(&file);
600: convert_to_long(&line);
601:
602: fci.size = sizeof(fci);
603: fci.function_table = &Z_OBJCE_P(exception)->function_table;
604: fci.function_name = &fname;
605: fci.symbol_table = NULL;
606: fci.object_ptr = exception;
607: fci.retval_ptr_ptr = &trace;
608: fci.param_count = 0;
609: fci.params = NULL;
610: fci.no_separation = 1;
611:
612: zend_call_function(&fci, NULL TSRMLS_CC);
613:
614: if (Z_TYPE_P(trace) != IS_STRING) {
615: zval_ptr_dtor(&trace);
616: trace = NULL;
617: }
618:
619: if (Z_STRLEN(message) > 0) {
620: len = zend_spprintf(&str, 0, "exception '%s' with message '%s' in %s:%ld\nStack trace:\n%s%s%s",
621: Z_OBJCE_P(exception)->name, Z_STRVAL(message), Z_STRVAL(file), Z_LVAL(line),
622: (trace && Z_STRLEN_P(trace)) ? Z_STRVAL_P(trace) : "#0 {main}\n",
623: len ? "\n\nNext " : "", prev_str);
624: } else {
625: len = zend_spprintf(&str, 0, "exception '%s' in %s:%ld\nStack trace:\n%s%s%s",
626: Z_OBJCE_P(exception)->name, Z_STRVAL(file), Z_LVAL(line),
627: (trace && Z_STRLEN_P(trace)) ? Z_STRVAL_P(trace) : "#0 {main}\n",
628: len ? "\n\nNext " : "", prev_str);
629: }
630: efree(prev_str);
631: zval_dtor(&message);
632: zval_dtor(&file);
633: zval_dtor(&line);
634:
635: exception = zend_read_property(default_exception_ce, exception, "previous", sizeof("previous")-1, 0 TSRMLS_CC);
636:
637: if (trace) {
638: zval_ptr_dtor(&trace);
639: }
1.1.1.2 misho 640:
1.1 misho 641: }
642: zval_dtor(&fname);
643:
644: /* We store the result in the private property string so we can access
645: * the result in uncaught exception handlers without memleaks. */
646: zend_update_property_string(default_exception_ce, getThis(), "string", sizeof("string")-1, str TSRMLS_CC);
647:
648: RETURN_STRINGL(str, len, 0);
649: }
650: /* }}} */
651:
652: /* {{{ internal structs */
653: /* All functions that may be used in uncaught exception handlers must be final
654: * and must not throw exceptions. Otherwise we would need a facility to handle
655: * such exceptions in that handler.
656: * Also all getXY() methods are final because thy serve as read only access to
657: * their corresponding properties, no more, no less. If after all you need to
658: * override somthing then it is method __toString().
659: * And never try to change the state of exceptions and never implement anything
660: * that gives the user anything to accomplish this.
661: */
662: ZEND_BEGIN_ARG_INFO_EX(arginfo_exception___construct, 0, 0, 0)
663: ZEND_ARG_INFO(0, message)
664: ZEND_ARG_INFO(0, code)
665: ZEND_ARG_INFO(0, previous)
666: ZEND_END_ARG_INFO()
667:
668: const static zend_function_entry default_exception_functions[] = {
669: ZEND_ME(exception, __clone, NULL, ZEND_ACC_PRIVATE|ZEND_ACC_FINAL)
670: ZEND_ME(exception, __construct, arginfo_exception___construct, ZEND_ACC_PUBLIC)
671: ZEND_ME(exception, getMessage, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
672: ZEND_ME(exception, getCode, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
673: ZEND_ME(exception, getFile, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
674: ZEND_ME(exception, getLine, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
675: ZEND_ME(exception, getTrace, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
676: ZEND_ME(exception, getPrevious, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
677: ZEND_ME(exception, getTraceAsString, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
678: ZEND_ME(exception, __toString, NULL, 0)
679: {NULL, NULL, NULL}
680: };
681:
682: ZEND_BEGIN_ARG_INFO_EX(arginfo_error_exception___construct, 0, 0, 0)
683: ZEND_ARG_INFO(0, message)
684: ZEND_ARG_INFO(0, code)
685: ZEND_ARG_INFO(0, severity)
686: ZEND_ARG_INFO(0, filename)
687: ZEND_ARG_INFO(0, lineno)
688: ZEND_ARG_INFO(0, previous)
689: ZEND_END_ARG_INFO()
690:
691: static const zend_function_entry error_exception_functions[] = {
692: ZEND_ME(error_exception, __construct, arginfo_error_exception___construct, ZEND_ACC_PUBLIC)
693: ZEND_ME(error_exception, getSeverity, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_FINAL)
694: {NULL, NULL, NULL}
695: };
696: /* }}} */
697:
698: void zend_register_default_exception(TSRMLS_D) /* {{{ */
699: {
700: zend_class_entry ce;
701:
702: INIT_CLASS_ENTRY(ce, "Exception", default_exception_functions);
703: default_exception_ce = zend_register_internal_class(&ce TSRMLS_CC);
704: default_exception_ce->create_object = zend_default_exception_new;
705: memcpy(&default_exception_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
706: default_exception_handlers.clone_obj = NULL;
707:
708: zend_declare_property_string(default_exception_ce, "message", sizeof("message")-1, "", ZEND_ACC_PROTECTED TSRMLS_CC);
709: zend_declare_property_string(default_exception_ce, "string", sizeof("string")-1, "", ZEND_ACC_PRIVATE TSRMLS_CC);
710: zend_declare_property_long(default_exception_ce, "code", sizeof("code")-1, 0, ZEND_ACC_PROTECTED TSRMLS_CC);
711: zend_declare_property_null(default_exception_ce, "file", sizeof("file")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
712: zend_declare_property_null(default_exception_ce, "line", sizeof("line")-1, ZEND_ACC_PROTECTED TSRMLS_CC);
713: zend_declare_property_null(default_exception_ce, "trace", sizeof("trace")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
714: zend_declare_property_null(default_exception_ce, "previous", sizeof("previous")-1, ZEND_ACC_PRIVATE TSRMLS_CC);
715:
716: INIT_CLASS_ENTRY(ce, "ErrorException", error_exception_functions);
717: error_exception_ce = zend_register_internal_class_ex(&ce, default_exception_ce, NULL TSRMLS_CC);
718: error_exception_ce->create_object = zend_error_exception_new;
719: zend_declare_property_long(error_exception_ce, "severity", sizeof("severity")-1, E_ERROR, ZEND_ACC_PROTECTED TSRMLS_CC);
720: }
721: /* }}} */
722:
723: ZEND_API zend_class_entry *zend_exception_get_default(TSRMLS_D) /* {{{ */
724: {
725: return default_exception_ce;
726: }
727: /* }}} */
728:
729: ZEND_API zend_class_entry *zend_get_error_exception(TSRMLS_D) /* {{{ */
730: {
731: return error_exception_ce;
732: }
733: /* }}} */
734:
735: ZEND_API zval * zend_throw_exception(zend_class_entry *exception_ce, char *message, long code TSRMLS_DC) /* {{{ */
736: {
737: zval *ex;
738:
739: MAKE_STD_ZVAL(ex);
740: if (exception_ce) {
741: if (!instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
742: zend_error(E_NOTICE, "Exceptions must be derived from the Exception base class");
743: exception_ce = default_exception_ce;
744: }
745: } else {
746: exception_ce = default_exception_ce;
747: }
748: object_init_ex(ex, exception_ce);
749:
750:
751: if (message) {
752: zend_update_property_string(default_exception_ce, ex, "message", sizeof("message")-1, message TSRMLS_CC);
753: }
754: if (code) {
755: zend_update_property_long(default_exception_ce, ex, "code", sizeof("code")-1, code TSRMLS_CC);
756: }
757:
758: zend_throw_exception_internal(ex TSRMLS_CC);
759: return ex;
760: }
761: /* }}} */
762:
763: ZEND_API zval * zend_throw_exception_ex(zend_class_entry *exception_ce, long code TSRMLS_DC, char *format, ...) /* {{{ */
764: {
765: va_list arg;
766: char *message;
767: zval *zexception;
768:
769: va_start(arg, format);
770: zend_vspprintf(&message, 0, format, arg);
771: va_end(arg);
772: zexception = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
773: efree(message);
774: return zexception;
775: }
776: /* }}} */
777:
778: ZEND_API zval * zend_throw_error_exception(zend_class_entry *exception_ce, char *message, long code, int severity TSRMLS_DC) /* {{{ */
779: {
780: zval *ex = zend_throw_exception(exception_ce, message, code TSRMLS_CC);
781: zend_update_property_long(default_exception_ce, ex, "severity", sizeof("severity")-1, severity TSRMLS_CC);
782: return ex;
783: }
784: /* }}} */
785:
786: static void zend_error_va(int type, const char *file, uint lineno, const char *format, ...) /* {{{ */
787: {
788: va_list args;
789:
790: va_start(args, format);
791: zend_error_cb(type, file, lineno, format, args);
792: va_end(args);
793: }
794: /* }}} */
795:
796: /* This function doesn't return if it uses E_ERROR */
797: ZEND_API void zend_exception_error(zval *exception, int severity TSRMLS_DC) /* {{{ */
798: {
799: zend_class_entry *ce_exception = Z_OBJCE_P(exception);
800: if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
801: zval *str, *file, *line;
802:
803: EG(exception) = NULL;
804:
805: zend_call_method_with_0_params(&exception, ce_exception, NULL, "__tostring", &str);
806: if (!EG(exception)) {
807: if (Z_TYPE_P(str) != IS_STRING) {
808: zend_error(E_WARNING, "%s::__toString() must return a string", ce_exception->name);
809: } else {
810: zend_update_property_string(default_exception_ce, exception, "string", sizeof("string")-1, EG(exception) ? ce_exception->name : Z_STRVAL_P(str) TSRMLS_CC);
811: }
812: }
813: zval_ptr_dtor(&str);
814:
815: if (EG(exception)) {
816: /* do the best we can to inform about the inner exception */
817: if (instanceof_function(ce_exception, default_exception_ce TSRMLS_CC)) {
818: file = zend_read_property(default_exception_ce, EG(exception), "file", sizeof("file")-1, 1 TSRMLS_CC);
819: line = zend_read_property(default_exception_ce, EG(exception), "line", sizeof("line")-1, 1 TSRMLS_CC);
1.1.1.3 ! misho 820:
! 821: convert_to_string(file);
! 822: file = (Z_STRLEN_P(file) > 0) ? file : NULL;
! 823: line = (Z_TYPE_P(line) == IS_LONG) ? line : NULL;
1.1 misho 824: } else {
825: file = NULL;
826: line = NULL;
827: }
828: 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_P(EG(exception))->name, ce_exception->name);
829: }
830:
831: str = zend_read_property(default_exception_ce, exception, "string", sizeof("string")-1, 1 TSRMLS_CC);
832: file = zend_read_property(default_exception_ce, exception, "file", sizeof("file")-1, 1 TSRMLS_CC);
833: line = zend_read_property(default_exception_ce, exception, "line", sizeof("line")-1, 1 TSRMLS_CC);
834:
1.1.1.3 ! misho 835: convert_to_string(str);
! 836: convert_to_string(file);
! 837: convert_to_long(line);
! 838:
! 839: 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));
1.1 misho 840: } else {
841: zend_error(severity, "Uncaught exception '%s'", ce_exception->name);
842: }
843: }
844: /* }}} */
845:
846: ZEND_API void zend_throw_exception_object(zval *exception TSRMLS_DC) /* {{{ */
847: {
848: zend_class_entry *exception_ce;
849:
850: if (exception == NULL || Z_TYPE_P(exception) != IS_OBJECT) {
851: zend_error(E_ERROR, "Need to supply an object when throwing an exception");
852: }
853:
854: exception_ce = Z_OBJCE_P(exception);
855:
856: if (!exception_ce || !instanceof_function(exception_ce, default_exception_ce TSRMLS_CC)) {
857: zend_error(E_ERROR, "Exceptions must be valid objects derived from the Exception base class");
858: }
859: zend_throw_exception_internal(exception TSRMLS_CC);
860: }
861: /* }}} */
862:
863: /*
864: * Local variables:
865: * tab-width: 4
866: * c-basic-offset: 4
867: * indent-tabs-mode: t
868: * End:
869: */
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