1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2015 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Ard Biesheuvel <a.k.biesheuvel@its.tudelft.nl> |
16 +----------------------------------------------------------------------+
17 */
18
19 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22
23 #include "php.h"
24
25 #if HAVE_IBASE
26
27 #include "php_interbase.h"
28 #include "php_ibase_includes.h"
29
30 #define BLOB_CLOSE 1
31 #define BLOB_CANCEL 2
32
33 static int le_blob;
34
_php_ibase_free_blob(zend_rsrc_list_entry * rsrc TSRMLS_DC)35 static void _php_ibase_free_blob(zend_rsrc_list_entry *rsrc TSRMLS_DC) /* {{{ */
36 {
37 ibase_blob *ib_blob = (ibase_blob *)rsrc->ptr;
38
39 if (ib_blob->bl_handle != NULL) { /* blob open*/
40 if (isc_cancel_blob(IB_STATUS, &ib_blob->bl_handle)) {
41 _php_ibase_module_error("You can lose data. Close any blob after reading from or "
42 "writing to it. Use ibase_blob_close() before calling ibase_close()" TSRMLS_CC);
43 }
44 }
45 efree(ib_blob);
46 }
47 /* }}} */
48
php_ibase_blobs_minit(INIT_FUNC_ARGS)49 void php_ibase_blobs_minit(INIT_FUNC_ARGS) /* {{{ */
50 {
51 le_blob = zend_register_list_destructors_ex(_php_ibase_free_blob, NULL,
52 "interbase blob", module_number);
53 }
54 /* }}} */
55
_php_ibase_string_to_quad(char const * id,ISC_QUAD * qd)56 int _php_ibase_string_to_quad(char const *id, ISC_QUAD *qd) /* {{{ */
57 {
58 /* shortcut for most common case */
59 if (sizeof(ISC_QUAD) == sizeof(ISC_UINT64)) {
60 return sscanf(id, BLOB_ID_MASK, (ISC_UINT64 *) qd);
61 } else {
62 ISC_UINT64 res;
63 if (sscanf(id, BLOB_ID_MASK, &res)) {
64 qd->gds_quad_high = (ISC_LONG) (res >> 0x20);
65 qd->gds_quad_low = (ISC_LONG) (res & 0xFFFFFFFF);
66 return 1;
67 }
68 return 0;
69 }
70 }
71 /* }}} */
72
_php_ibase_quad_to_string(ISC_QUAD const qd)73 char *_php_ibase_quad_to_string(ISC_QUAD const qd) /* {{{ */
74 {
75 char *result;
76
77 /* shortcut for most common case */
78 if (sizeof(ISC_QUAD) == sizeof(ISC_UINT64)) {
79 spprintf(&result, BLOB_ID_LEN+1, "0x%0*" LL_MASK "x", 16, *(ISC_UINT64*)(void *) &qd);
80 } else {
81 ISC_UINT64 res = ((ISC_UINT64) qd.gds_quad_high << 0x20) | qd.gds_quad_low;
82 spprintf(&result, BLOB_ID_LEN+1, "0x%0*" LL_MASK "x", 16, res);
83 }
84 return result;
85 }
86 /* }}} */
87
88 typedef struct { /* {{{ */
89 ISC_LONG max_segment; /* Length of longest segment */
90 ISC_LONG num_segments; /* Total number of segments */
91 ISC_LONG total_length; /* Total length of blob */
92 int bl_stream; /* blob is stream ? */
93 /* }}} */
94 } IBASE_BLOBINFO;
95
_php_ibase_blob_get(zval * return_value,ibase_blob * ib_blob,unsigned long max_len TSRMLS_DC)96 int _php_ibase_blob_get(zval *return_value, ibase_blob *ib_blob, unsigned long max_len TSRMLS_DC) /* {{{ */
97 {
98 if (ib_blob->bl_qd.gds_quad_high || ib_blob->bl_qd.gds_quad_low) { /*not null ?*/
99
100 ISC_STATUS stat;
101 char *bl_data;
102 unsigned long cur_len;
103 unsigned short seg_len;
104
105 bl_data = safe_emalloc(1, max_len, 1);
106
107 for (cur_len = stat = 0; (stat == 0 || stat == isc_segment) && cur_len < max_len; cur_len += seg_len) {
108
109 unsigned short chunk_size = (max_len-cur_len) > USHRT_MAX ? USHRT_MAX
110 : (unsigned short)(max_len-cur_len);
111
112 stat = isc_get_segment(IB_STATUS, &ib_blob->bl_handle, &seg_len, chunk_size, &bl_data[cur_len]);
113 }
114
115 bl_data[cur_len] = '\0';
116 if (IB_STATUS[0] == 1 && (stat != 0 && stat != isc_segstr_eof && stat != isc_segment)) {
117 efree(bl_data);
118 _php_ibase_error(TSRMLS_C);
119 return FAILURE;
120 }
121 RETVAL_STRINGL(bl_data, cur_len, 0);
122 } else { /* null blob */
123 RETVAL_STRING("", 1); /* empty string */
124 }
125 return SUCCESS;
126 }
127 /* }}} */
128
_php_ibase_blob_add(zval ** string_arg,ibase_blob * ib_blob TSRMLS_DC)129 int _php_ibase_blob_add(zval **string_arg, ibase_blob *ib_blob TSRMLS_DC) /* {{{ */
130 {
131 unsigned long put_cnt = 0, rem_cnt;
132 unsigned short chunk_size;
133
134 convert_to_string_ex(string_arg);
135
136 for (rem_cnt = Z_STRLEN_PP(string_arg); rem_cnt > 0; rem_cnt -= chunk_size) {
137
138 chunk_size = rem_cnt > USHRT_MAX ? USHRT_MAX : (unsigned short)rem_cnt;
139
140 if (isc_put_segment(IB_STATUS, &ib_blob->bl_handle, chunk_size, &Z_STRVAL_PP(string_arg)[put_cnt] )) {
141 _php_ibase_error(TSRMLS_C);
142 return FAILURE;
143 }
144 put_cnt += chunk_size;
145 }
146 return SUCCESS;
147 }
148 /* }}} */
149
_php_ibase_blob_info(isc_blob_handle bl_handle,IBASE_BLOBINFO * bl_info TSRMLS_DC)150 static int _php_ibase_blob_info(isc_blob_handle bl_handle, IBASE_BLOBINFO *bl_info TSRMLS_DC) /* {{{ */
151 {
152 static char bl_items[] = {
153 isc_info_blob_num_segments,
154 isc_info_blob_max_segment,
155 isc_info_blob_total_length,
156 isc_info_blob_type
157 };
158
159 char bl_inf[sizeof(long)*8], *p;
160
161 bl_info->max_segment = 0;
162 bl_info->num_segments = 0;
163 bl_info->total_length = 0;
164 bl_info->bl_stream = 0;
165
166 if (isc_blob_info(IB_STATUS, &bl_handle, sizeof(bl_items), bl_items, sizeof(bl_inf), bl_inf)) {
167 _php_ibase_error(TSRMLS_C);
168 return FAILURE;
169 }
170
171 for (p = bl_inf; *p != isc_info_end && p < bl_inf + sizeof(bl_inf);) {
172 unsigned short item_len;
173 int item = *p++;
174
175 item_len = (short) isc_vax_integer(p, 2);
176 p += 2;
177 switch (item) {
178 case isc_info_blob_num_segments:
179 bl_info->num_segments = isc_vax_integer(p, item_len);
180 break;
181 case isc_info_blob_max_segment:
182 bl_info->max_segment = isc_vax_integer(p, item_len);
183 break;
184 case isc_info_blob_total_length:
185 bl_info->total_length = isc_vax_integer(p, item_len);
186 break;
187 case isc_info_blob_type:
188 bl_info->bl_stream = isc_vax_integer(p, item_len);
189 break;
190 case isc_info_end:
191 break;
192 case isc_info_truncated:
193 case isc_info_error: /* hmm. don't think so...*/
194 _php_ibase_module_error("PHP module internal error" TSRMLS_CC);
195 return FAILURE;
196 } /* switch */
197 p += item_len;
198 } /* for */
199 return SUCCESS;
200 }
201 /* }}} */
202
203 /* {{{ proto resource ibase_blob_create([resource link_identifier])
204 Create blob for adding data */
PHP_FUNCTION(ibase_blob_create)205 PHP_FUNCTION(ibase_blob_create)
206 {
207 zval *link = NULL;
208 ibase_db_link *ib_link;
209 ibase_trans *trans = NULL;
210 ibase_blob *ib_blob;
211
212 RESET_ERRMSG;
213
214 if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|r", &link)) {
215 RETURN_FALSE;
216 }
217
218 PHP_IBASE_LINK_TRANS(link, ib_link, trans);
219
220 ib_blob = (ibase_blob *) emalloc(sizeof(ibase_blob));
221 ib_blob->bl_handle = NULL;
222 ib_blob->type = BLOB_INPUT;
223
224 if (isc_create_blob(IB_STATUS, &ib_link->handle, &trans->handle, &ib_blob->bl_handle, &ib_blob->bl_qd)) {
225 _php_ibase_error(TSRMLS_C);
226 efree(ib_blob);
227 RETURN_FALSE;
228 }
229
230 ZEND_REGISTER_RESOURCE(return_value, ib_blob, le_blob);
231 }
232 /* }}} */
233
234 /* {{{ proto resource ibase_blob_open([ resource link_identifier, ] string blob_id)
235 Open blob for retrieving data parts */
PHP_FUNCTION(ibase_blob_open)236 PHP_FUNCTION(ibase_blob_open)
237 {
238 char *blob_id;
239 int blob_id_len;
240 zval *link = NULL;
241 ibase_db_link *ib_link;
242 ibase_trans *trans = NULL;
243 ibase_blob *ib_blob;
244
245 RESET_ERRMSG;
246
247 switch (ZEND_NUM_ARGS()) {
248 default:
249 WRONG_PARAM_COUNT;
250 case 1:
251 if (FAILURE == zend_parse_parameters(1 TSRMLS_CC, "s", &blob_id, &blob_id_len)) {
252 RETURN_FALSE;
253 }
254 break;
255 case 2:
256 if (FAILURE == zend_parse_parameters(2 TSRMLS_CC, "rs", &link, &blob_id, &blob_id_len)) {
257 RETURN_FALSE;
258 }
259 break;
260 }
261
262 PHP_IBASE_LINK_TRANS(link, ib_link, trans);
263
264 ib_blob = (ibase_blob *) emalloc(sizeof(ibase_blob));
265 ib_blob->bl_handle = NULL;
266 ib_blob->type = BLOB_OUTPUT;
267
268 do {
269 if (! _php_ibase_string_to_quad(blob_id, &ib_blob->bl_qd)) {
270 _php_ibase_module_error("String is not a BLOB ID" TSRMLS_CC);
271 break;
272 }
273
274 if (isc_open_blob(IB_STATUS, &ib_link->handle, &trans->handle, &ib_blob->bl_handle,
275 &ib_blob->bl_qd)) {
276 _php_ibase_error(TSRMLS_C);
277 break;
278 }
279
280 ZEND_REGISTER_RESOURCE(return_value, ib_blob, le_blob);
281 return;
282
283 } while (0);
284
285 efree(ib_blob);
286 RETURN_FALSE;
287 }
288 /* }}} */
289
290 /* {{{ proto bool ibase_blob_add(resource blob_handle, string data)
291 Add data into created blob */
PHP_FUNCTION(ibase_blob_add)292 PHP_FUNCTION(ibase_blob_add)
293 {
294 zval **blob_arg, **string_arg;
295 ibase_blob *ib_blob;
296
297 RESET_ERRMSG;
298
299 if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &blob_arg, &string_arg) == FAILURE) {
300 WRONG_PARAM_COUNT;
301 }
302
303 ZEND_FETCH_RESOURCE(ib_blob, ibase_blob *, blob_arg, -1, "Interbase blob", le_blob);
304
305 if (ib_blob->type != BLOB_INPUT) {
306 _php_ibase_module_error("BLOB is not open for input" TSRMLS_CC);
307 RETURN_FALSE;
308 }
309
310 if (_php_ibase_blob_add(string_arg, ib_blob TSRMLS_CC) != SUCCESS) {
311 RETURN_FALSE;
312 }
313 }
314 /* }}} */
315
316 /* {{{ proto string ibase_blob_get(resource blob_handle, int len)
317 Get len bytes data from open blob */
PHP_FUNCTION(ibase_blob_get)318 PHP_FUNCTION(ibase_blob_get)
319 {
320 zval **blob_arg, **len_arg;
321 ibase_blob *ib_blob;
322
323 RESET_ERRMSG;
324
325 if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &blob_arg, &len_arg) == FAILURE) {
326 WRONG_PARAM_COUNT;
327 }
328
329 ZEND_FETCH_RESOURCE(ib_blob, ibase_blob *, blob_arg, -1, "Interbase blob", le_blob);
330
331 if (ib_blob->type != BLOB_OUTPUT) {
332 _php_ibase_module_error("BLOB is not open for output" TSRMLS_CC);
333 RETURN_FALSE;
334 }
335
336 convert_to_long_ex(len_arg);
337
338 if (_php_ibase_blob_get(return_value, ib_blob, Z_LVAL_PP(len_arg) TSRMLS_CC) != SUCCESS) {
339 RETURN_FALSE;
340 }
341 }
342 /* }}} */
343
_php_ibase_blob_end(INTERNAL_FUNCTION_PARAMETERS,int bl_end)344 static void _php_ibase_blob_end(INTERNAL_FUNCTION_PARAMETERS, int bl_end) /* {{{ */
345 {
346 zval **blob_arg;
347 ibase_blob *ib_blob;
348
349 RESET_ERRMSG;
350
351 if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &blob_arg) == FAILURE) {
352 WRONG_PARAM_COUNT;
353 }
354
355 ZEND_FETCH_RESOURCE(ib_blob, ibase_blob *, blob_arg, -1, "Interbase blob", le_blob);
356
357 if (bl_end == BLOB_CLOSE) { /* return id here */
358
359 if (ib_blob->bl_qd.gds_quad_high || ib_blob->bl_qd.gds_quad_low) { /*not null ?*/
360 if (isc_close_blob(IB_STATUS, &ib_blob->bl_handle)) {
361 _php_ibase_error(TSRMLS_C);
362 RETURN_FALSE;
363 }
364 }
365 ib_blob->bl_handle = NULL;
366
367 RETVAL_STRINGL(_php_ibase_quad_to_string(ib_blob->bl_qd), BLOB_ID_LEN, 0);
368 } else { /* discard created blob */
369 if (isc_cancel_blob(IB_STATUS, &ib_blob->bl_handle)) {
370 _php_ibase_error(TSRMLS_C);
371 RETURN_FALSE;
372 }
373 ib_blob->bl_handle = NULL;
374 RETVAL_TRUE;
375 }
376 zend_list_delete(Z_LVAL_PP(blob_arg));
377 }
378 /* }}} */
379
380 /* {{{ proto string ibase_blob_close(resource blob_handle)
381 Close blob */
PHP_FUNCTION(ibase_blob_close)382 PHP_FUNCTION(ibase_blob_close)
383 {
384 _php_ibase_blob_end(INTERNAL_FUNCTION_PARAM_PASSTHRU, BLOB_CLOSE);
385 }
386 /* }}} */
387
388 /* {{{ proto bool ibase_blob_cancel(resource blob_handle)
389 Cancel creating blob */
PHP_FUNCTION(ibase_blob_cancel)390 PHP_FUNCTION(ibase_blob_cancel)
391 {
392 _php_ibase_blob_end(INTERNAL_FUNCTION_PARAM_PASSTHRU, BLOB_CANCEL);
393 }
394 /* }}} */
395
396 /* {{{ proto array ibase_blob_info([ resource link_identifier, ] string blob_id)
397 Return blob length and other useful info */
PHP_FUNCTION(ibase_blob_info)398 PHP_FUNCTION(ibase_blob_info)
399 {
400 char *blob_id;
401 int blob_id_len;
402 zval *link = NULL;
403 ibase_db_link *ib_link;
404 ibase_trans *trans = NULL;
405 ibase_blob ib_blob = { NULL, BLOB_INPUT };
406 IBASE_BLOBINFO bl_info;
407
408 RESET_ERRMSG;
409
410 switch (ZEND_NUM_ARGS()) {
411 default:
412 WRONG_PARAM_COUNT;
413 case 1:
414 if (FAILURE == zend_parse_parameters(1 TSRMLS_CC, "s", &blob_id, &blob_id_len)) {
415 RETURN_FALSE;
416 }
417 break;
418 case 2:
419 if (FAILURE == zend_parse_parameters(2 TSRMLS_CC, "rs", &link, &blob_id, &blob_id_len)) {
420 RETURN_FALSE;
421 }
422 break;
423 }
424
425 PHP_IBASE_LINK_TRANS(link, ib_link, trans);
426
427 if (! _php_ibase_string_to_quad(blob_id, &ib_blob.bl_qd)) {
428 _php_ibase_module_error("Unrecognized BLOB ID" TSRMLS_CC);
429 RETURN_FALSE;
430 }
431
432 if (ib_blob.bl_qd.gds_quad_high || ib_blob.bl_qd.gds_quad_low) { /* not null ? */
433 if (isc_open_blob(IB_STATUS, &ib_link->handle, &trans->handle, &ib_blob.bl_handle,
434 &ib_blob.bl_qd)) {
435 _php_ibase_error(TSRMLS_C);
436 RETURN_FALSE;
437 }
438
439 if (_php_ibase_blob_info(ib_blob.bl_handle, &bl_info TSRMLS_CC)) {
440 RETURN_FALSE;
441 }
442 if (isc_close_blob(IB_STATUS, &ib_blob.bl_handle)) {
443 _php_ibase_error(TSRMLS_C);
444 RETURN_FALSE;
445 }
446 } else { /* null blob, all values to zero */
447 bl_info.max_segment = 0;
448 bl_info.num_segments = 0;
449 bl_info.total_length = 0;
450 bl_info.bl_stream = 0;
451 }
452
453 array_init(return_value);
454
455 add_index_long(return_value, 0, bl_info.total_length);
456 add_assoc_long(return_value, "length", bl_info.total_length);
457
458 add_index_long(return_value, 1, bl_info.num_segments);
459 add_assoc_long(return_value, "numseg", bl_info.num_segments);
460
461 add_index_long(return_value, 2, bl_info.max_segment);
462 add_assoc_long(return_value, "maxseg", bl_info.max_segment);
463
464 add_index_bool(return_value, 3, bl_info.bl_stream);
465 add_assoc_bool(return_value, "stream", bl_info.bl_stream);
466
467 add_index_bool(return_value, 4, (!ib_blob.bl_qd.gds_quad_high && !ib_blob.bl_qd.gds_quad_low));
468 add_assoc_bool(return_value, "isnull", (!ib_blob.bl_qd.gds_quad_high && !ib_blob.bl_qd.gds_quad_low));
469 }
470 /* }}} */
471
472 /* {{{ proto bool ibase_blob_echo([ resource link_identifier, ] string blob_id)
473 Output blob contents to browser */
PHP_FUNCTION(ibase_blob_echo)474 PHP_FUNCTION(ibase_blob_echo)
475 {
476 char *blob_id;
477 int blob_id_len;
478 zval *link = NULL;
479 ibase_db_link *ib_link;
480 ibase_trans *trans = NULL;
481 ibase_blob ib_blob_id = { NULL, BLOB_OUTPUT };
482 char bl_data[IBASE_BLOB_SEG];
483 unsigned short seg_len;
484
485 RESET_ERRMSG;
486
487 switch (ZEND_NUM_ARGS()) {
488 default:
489 WRONG_PARAM_COUNT;
490 case 1:
491 if (FAILURE == zend_parse_parameters(1 TSRMLS_CC, "s", &blob_id, &blob_id_len)) {
492 RETURN_FALSE;
493 }
494 break;
495 case 2:
496 if (FAILURE == zend_parse_parameters(2 TSRMLS_CC, "rs", &link, &blob_id, &blob_id_len)) {
497 RETURN_FALSE;
498 }
499 break;
500 }
501
502 PHP_IBASE_LINK_TRANS(link, ib_link, trans);
503
504 if (! _php_ibase_string_to_quad(blob_id, &ib_blob_id.bl_qd)) {
505 _php_ibase_module_error("Unrecognized BLOB ID" TSRMLS_CC);
506 RETURN_FALSE;
507 }
508
509 do {
510 if (isc_open_blob(IB_STATUS, &ib_link->handle, &trans->handle, &ib_blob_id.bl_handle,
511 &ib_blob_id.bl_qd)) {
512 break;
513 }
514
515 while (!isc_get_segment(IB_STATUS, &ib_blob_id.bl_handle, &seg_len, sizeof(bl_data), bl_data)
516 || IB_STATUS[1] == isc_segment) {
517 PHPWRITE(bl_data, seg_len);
518 }
519
520 if (IB_STATUS[0] && (IB_STATUS[1] != isc_segstr_eof)) {
521 break;
522 }
523
524 if (isc_close_blob(IB_STATUS, &ib_blob_id.bl_handle)) {
525 break;
526 }
527 RETURN_TRUE;
528 } while (0);
529
530 _php_ibase_error(TSRMLS_C);
531 RETURN_FALSE;
532 }
533 /* }}} */
534
535 /* {{{ proto string ibase_blob_import([ resource link_identifier, ] resource file)
536 Create blob, copy file in it, and close it */
PHP_FUNCTION(ibase_blob_import)537 PHP_FUNCTION(ibase_blob_import)
538 {
539 zval *link = NULL, *file;
540 int size;
541 unsigned short b;
542 ibase_blob ib_blob = { NULL, 0 };
543 ibase_db_link *ib_link;
544 ibase_trans *trans = NULL;
545 char bl_data[IBASE_BLOB_SEG];
546 php_stream *stream;
547
548 RESET_ERRMSG;
549
550 if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|r",
551 (ZEND_NUM_ARGS()-1) ? &link : &file, &file)) {
552 RETURN_FALSE;
553 }
554
555 PHP_IBASE_LINK_TRANS(link, ib_link, trans);
556
557 php_stream_from_zval(stream, &file);
558
559 do {
560 if (isc_create_blob(IB_STATUS, &ib_link->handle, &trans->handle, &ib_blob.bl_handle,
561 &ib_blob.bl_qd)) {
562 break;
563 }
564
565 for (size = 0; (b = php_stream_read(stream, bl_data, sizeof(bl_data))); size += b) {
566 if (isc_put_segment(IB_STATUS, &ib_blob.bl_handle, b, bl_data)) {
567 break;
568 }
569 }
570
571 if (isc_close_blob(IB_STATUS, &ib_blob.bl_handle)) {
572 break;
573 }
574 RETURN_STRINGL( _php_ibase_quad_to_string(ib_blob.bl_qd), BLOB_ID_LEN, 0);
575 } while (0);
576
577 _php_ibase_error(TSRMLS_C);
578 RETURN_FALSE;
579 }
580 /* }}} */
581
582 #endif /* HAVE_IBASE */
583
584 /*
585 * Local variables:
586 * tab-width: 4
587 * c-basic-offset: 4
588 * End:
589 * vim600: sw=4 ts=4 fdm=marker
590 * vim<600: sw=4 ts=4
591 */
592
