1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2018 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 | Author: Wez Furlong <wez@php.net> |
16 | Frank M. Kromann <frank@kromann.info> |
17 +----------------------------------------------------------------------+
18 */
19
20 #ifdef HAVE_CONFIG_H
21 # include "config.h"
22 #endif
23
24 #include "php.h"
25 #include "php_ini.h"
26 #include "ext/standard/info.h"
27 #include "pdo/php_pdo.h"
28 #include "pdo/php_pdo_driver.h"
29 #include "php_pdo_dblib.h"
30 #include "php_pdo_dblib_int.h"
31 #include "zend_exceptions.h"
32
33 /* Cache of the server supported datatypes, initialized in handle_factory */
34 zval* pdo_dblib_datatypes;
35
dblib_fetch_error(pdo_dbh_t * dbh,pdo_stmt_t * stmt,zval * info)36 static int dblib_fetch_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, zval *info)
37 {
38 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
39 pdo_dblib_err *einfo = &H->err;
40 pdo_dblib_stmt *S = NULL;
41 char *message;
42 char *msg;
43
44 if (stmt) {
45 S = (pdo_dblib_stmt*)stmt->driver_data;
46 einfo = &S->err;
47 }
48
49 if (einfo->lastmsg) {
50 msg = einfo->lastmsg;
51 } else if (DBLIB_G(err).lastmsg) {
52 msg = DBLIB_G(err).lastmsg;
53 DBLIB_G(err).lastmsg = NULL;
54 } else {
55 msg = einfo->dberrstr;
56 }
57
58 /* don't return anything if there's nothing to return */
59 if (msg == NULL && einfo->dberr == 0 && einfo->oserr == 0 && einfo->severity == 0) {
60 return 0;
61 }
62
63 spprintf(&message, 0, "%s [%d] (severity %d) [%s]",
64 msg, einfo->dberr, einfo->severity, stmt ? stmt->active_query_string : "");
65
66 add_next_index_long(info, einfo->dberr);
67 add_next_index_string(info, message);
68 efree(message);
69 add_next_index_long(info, einfo->oserr);
70 add_next_index_long(info, einfo->severity);
71 if (einfo->oserrstr) {
72 add_next_index_string(info, einfo->oserrstr);
73 }
74
75 return 1;
76 }
77
78
dblib_handle_closer(pdo_dbh_t * dbh)79 static int dblib_handle_closer(pdo_dbh_t *dbh)
80 {
81 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
82
83 if (H) {
84 pdo_dblib_err_dtor(&H->err);
85 if (H->link) {
86 dbclose(H->link);
87 H->link = NULL;
88 }
89 if (H->login) {
90 dbfreelogin(H->login);
91 H->login = NULL;
92 }
93 pefree(H, dbh->is_persistent);
94 dbh->driver_data = NULL;
95 }
96 return 0;
97 }
98
dblib_handle_preparer(pdo_dbh_t * dbh,const char * sql,size_t sql_len,pdo_stmt_t * stmt,zval * driver_options)99 static int dblib_handle_preparer(pdo_dbh_t *dbh, const char *sql, size_t sql_len, pdo_stmt_t *stmt, zval *driver_options)
100 {
101 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
102 pdo_dblib_stmt *S = ecalloc(1, sizeof(*S));
103
104 S->H = H;
105 stmt->driver_data = S;
106 stmt->methods = &dblib_stmt_methods;
107 stmt->supports_placeholders = PDO_PLACEHOLDER_NONE;
108 S->computed_column_name_count = 0;
109 S->err.sqlstate = stmt->error_code;
110
111 return 1;
112 }
113
dblib_handle_doer(pdo_dbh_t * dbh,const char * sql,size_t sql_len)114 static zend_long dblib_handle_doer(pdo_dbh_t *dbh, const char *sql, size_t sql_len)
115 {
116 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
117 RETCODE ret, resret;
118
119 dbsetuserdata(H->link, (BYTE*)&H->err);
120
121 if (FAIL == dbcmd(H->link, sql)) {
122 return -1;
123 }
124
125 if (FAIL == dbsqlexec(H->link)) {
126 return -1;
127 }
128
129 resret = dbresults(H->link);
130
131 if (resret == FAIL) {
132 return -1;
133 }
134
135 ret = dbnextrow(H->link);
136 if (ret == FAIL) {
137 return -1;
138 }
139
140 if (dbnumcols(H->link) <= 0) {
141 return DBCOUNT(H->link);
142 }
143
144 /* throw away any rows it might have returned */
145 dbcanquery(H->link);
146
147 return DBCOUNT(H->link);
148 }
149
dblib_handle_quoter(pdo_dbh_t * dbh,const char * unquoted,size_t unquotedlen,char ** quoted,size_t * quotedlen,enum pdo_param_type paramtype)150 static int dblib_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, size_t unquotedlen, char **quoted, size_t *quotedlen, enum pdo_param_type paramtype)
151 {
152 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
153 zend_bool use_national_character_set = 0;
154
155 size_t i;
156 char * q;
157 *quotedlen = 0;
158
159 if (H->assume_national_character_set_strings) {
160 use_national_character_set = 1;
161 }
162 if ((paramtype & PDO_PARAM_STR_NATL) == PDO_PARAM_STR_NATL) {
163 use_national_character_set = 1;
164 }
165 if ((paramtype & PDO_PARAM_STR_CHAR) == PDO_PARAM_STR_CHAR) {
166 use_national_character_set = 0;
167 }
168
169 /* Detect quoted length, adding extra char for doubled single quotes */
170 for (i = 0; i < unquotedlen; i++) {
171 if (unquoted[i] == '\'') ++*quotedlen;
172 ++*quotedlen;
173 }
174
175 *quotedlen += 2; /* +2 for opening, closing quotes */
176 if (use_national_character_set) {
177 ++*quotedlen; /* N prefix */
178 }
179 q = *quoted = emalloc(*quotedlen + 1); /* Add byte for terminal null */
180 if (use_national_character_set) {
181 *q++ = 'N';
182 }
183 *q++ = '\'';
184
185 for (i = 0; i < unquotedlen; i++) {
186 if (unquoted[i] == '\'') {
187 *q++ = '\'';
188 *q++ = '\'';
189 } else {
190 *q++ = unquoted[i];
191 }
192 }
193 *q++ = '\'';
194
195 *q = 0;
196
197 return 1;
198 }
199
pdo_dblib_transaction_cmd(const char * cmd,pdo_dbh_t * dbh)200 static int pdo_dblib_transaction_cmd(const char *cmd, pdo_dbh_t *dbh)
201 {
202 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
203
204 if (FAIL == dbcmd(H->link, cmd)) {
205 return 0;
206 }
207
208 if (FAIL == dbsqlexec(H->link)) {
209 return 0;
210 }
211
212 return 1;
213 }
214
dblib_handle_begin(pdo_dbh_t * dbh)215 static int dblib_handle_begin(pdo_dbh_t *dbh)
216 {
217 return pdo_dblib_transaction_cmd("BEGIN TRANSACTION", dbh);
218 }
219
dblib_handle_commit(pdo_dbh_t * dbh)220 static int dblib_handle_commit(pdo_dbh_t *dbh)
221 {
222 return pdo_dblib_transaction_cmd("COMMIT TRANSACTION", dbh);
223 }
224
dblib_handle_rollback(pdo_dbh_t * dbh)225 static int dblib_handle_rollback(pdo_dbh_t *dbh)
226 {
227 return pdo_dblib_transaction_cmd("ROLLBACK TRANSACTION", dbh);
228 }
229
dblib_handle_last_id(pdo_dbh_t * dbh,const char * name,size_t * len)230 char *dblib_handle_last_id(pdo_dbh_t *dbh, const char *name, size_t *len)
231 {
232 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
233
234 RETCODE ret;
235 char *id = NULL;
236
237 /*
238 * Would use scope_identity() but it's not implemented on Sybase
239 */
240
241 if (FAIL == dbcmd(H->link, "SELECT @@IDENTITY")) {
242 return NULL;
243 }
244
245 if (FAIL == dbsqlexec(H->link)) {
246 return NULL;
247 }
248
249 ret = dbresults(H->link);
250 if (ret == FAIL || ret == NO_MORE_RESULTS) {
251 dbcancel(H->link);
252 return NULL;
253 }
254
255 ret = dbnextrow(H->link);
256
257 if (ret == FAIL || ret == NO_MORE_ROWS) {
258 dbcancel(H->link);
259 return NULL;
260 }
261
262 if (dbdatlen(H->link, 1) == 0) {
263 dbcancel(H->link);
264 return NULL;
265 }
266
267 id = emalloc(32);
268 *len = dbconvert(NULL, (dbcoltype(H->link, 1)) , (dbdata(H->link, 1)) , (dbdatlen(H->link, 1)), SQLCHAR, (BYTE *)id, (DBINT)-1);
269
270 dbcancel(H->link);
271 return id;
272 }
273
dblib_set_attr(pdo_dbh_t * dbh,zend_long attr,zval * val)274 static int dblib_set_attr(pdo_dbh_t *dbh, zend_long attr, zval *val)
275 {
276 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
277
278 switch(attr) {
279 case PDO_ATTR_DEFAULT_STR_PARAM:
280 H->assume_national_character_set_strings = zval_get_long(val) == PDO_PARAM_STR_NATL ? 1 : 0;
281 return 1;
282 case PDO_ATTR_TIMEOUT:
283 case PDO_DBLIB_ATTR_QUERY_TIMEOUT:
284 return SUCCEED == dbsettime(zval_get_long(val)) ? 1 : 0;
285 case PDO_DBLIB_ATTR_STRINGIFY_UNIQUEIDENTIFIER:
286 H->stringify_uniqueidentifier = zval_get_long(val);
287 return 1;
288 case PDO_DBLIB_ATTR_SKIP_EMPTY_ROWSETS:
289 H->skip_empty_rowsets = zval_is_true(val);
290 return 1;
291 case PDO_DBLIB_ATTR_DATETIME_CONVERT:
292 H->datetime_convert = zval_get_long(val);
293 return 1;
294 default:
295 return 0;
296 }
297 }
298
dblib_get_tds_version(zval * return_value,int tds)299 static void dblib_get_tds_version(zval *return_value, int tds)
300 {
301 switch (tds) {
302 case DBTDS_2_0:
303 ZVAL_STRING(return_value, "2.0");
304 break;
305
306 case DBTDS_3_4:
307 ZVAL_STRING(return_value, "3.4");
308 break;
309
310 case DBTDS_4_0:
311 ZVAL_STRING(return_value, "4.0");
312 break;
313
314 case DBTDS_4_2:
315 ZVAL_STRING(return_value, "4.2");
316 break;
317
318 case DBTDS_4_6:
319 ZVAL_STRING(return_value, "4.6");
320 break;
321
322 case DBTDS_4_9_5:
323 ZVAL_STRING(return_value, "4.9.5");
324 break;
325
326 case DBTDS_5_0:
327 ZVAL_STRING(return_value, "5.0");
328 break;
329
330 #ifdef DBTDS_7_0
331 case DBTDS_7_0:
332 ZVAL_STRING(return_value, "7.0");
333 break;
334 #endif
335
336 #ifdef DBTDS_7_1
337 case DBTDS_7_1:
338 ZVAL_STRING(return_value, "7.1");
339 break;
340 #endif
341
342 #ifdef DBTDS_7_2
343 case DBTDS_7_2:
344 ZVAL_STRING(return_value, "7.2");
345 break;
346 #endif
347
348 #ifdef DBTDS_7_3
349 case DBTDS_7_3:
350 ZVAL_STRING(return_value, "7.3");
351 break;
352 #endif
353
354 #ifdef DBTDS_7_4
355 case DBTDS_7_4:
356 ZVAL_STRING(return_value, "7.4");
357 break;
358 #endif
359
360 default:
361 ZVAL_FALSE(return_value);
362 break;
363 }
364 }
365
dblib_get_attribute(pdo_dbh_t * dbh,zend_long attr,zval * return_value)366 static int dblib_get_attribute(pdo_dbh_t *dbh, zend_long attr, zval *return_value)
367 {
368 pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
369
370 switch (attr) {
371 case PDO_ATTR_DEFAULT_STR_PARAM:
372 ZVAL_LONG(return_value, H->assume_national_character_set_strings ? PDO_PARAM_STR_NATL : PDO_PARAM_STR_CHAR);
373 break;
374
375 case PDO_ATTR_EMULATE_PREPARES:
376 /* this is the only option available, but expose it so common tests and whatever else can introspect */
377 ZVAL_TRUE(return_value);
378 break;
379
380 case PDO_DBLIB_ATTR_STRINGIFY_UNIQUEIDENTIFIER:
381 ZVAL_BOOL(return_value, H->stringify_uniqueidentifier);
382 break;
383
384 case PDO_DBLIB_ATTR_VERSION:
385 ZVAL_STRING(return_value, dbversion());
386 break;
387
388 case PDO_DBLIB_ATTR_TDS_VERSION:
389 dblib_get_tds_version(return_value, dbtds(H->link));
390 break;
391
392 case PDO_DBLIB_ATTR_SKIP_EMPTY_ROWSETS:
393 ZVAL_BOOL(return_value, H->skip_empty_rowsets);
394 break;
395
396 case PDO_DBLIB_ATTR_DATETIME_CONVERT:
397 ZVAL_BOOL(return_value, H->datetime_convert);
398 break;
399
400 default:
401 return 0;
402 }
403
404 return 1;
405 }
406
407 static const struct pdo_dbh_methods dblib_methods = {
408 dblib_handle_closer,
409 dblib_handle_preparer,
410 dblib_handle_doer,
411 dblib_handle_quoter,
412 dblib_handle_begin, /* begin */
413 dblib_handle_commit, /* commit */
414 dblib_handle_rollback, /* rollback */
415 dblib_set_attr, /*set attr */
416 dblib_handle_last_id, /* last insert id */
417 dblib_fetch_error, /* fetch error */
418 dblib_get_attribute, /* get attr */
419 NULL, /* check liveness */
420 NULL, /* get driver methods */
421 NULL, /* request shutdown */
422 NULL /* in transaction */
423 };
424
pdo_dblib_handle_factory(pdo_dbh_t * dbh,zval * driver_options)425 static int pdo_dblib_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
426 {
427 pdo_dblib_db_handle *H;
428 int i, nvars, nvers, ret = 0;
429
430 const pdo_dblib_keyval tdsver[] = {
431 {"4.2",DBVERSION_42}
432 ,{"4.6",DBVERSION_46}
433 ,{"5.0",DBVERSION_70} /* FIXME: This does not work with Sybase, but environ will */
434 ,{"6.0",DBVERSION_70}
435 ,{"7.0",DBVERSION_70}
436 #ifdef DBVERSION_71
437 ,{"7.1",DBVERSION_71}
438 #endif
439 #ifdef DBVERSION_72
440 ,{"7.2",DBVERSION_72}
441 ,{"8.0",DBVERSION_72}
442 #endif
443 #ifdef DBVERSION_73
444 ,{"7.3",DBVERSION_73}
445 #endif
446 #ifdef DBVERSION_74
447 ,{"7.4",DBVERSION_74}
448 #endif
449 ,{"10.0",DBVERSION_100}
450 ,{"auto",0} /* Only works with FreeTDS. Other drivers will bork */
451
452 };
453
454 struct pdo_data_src_parser vars[] = {
455 { "charset", NULL, 0 }
456 ,{ "appname", "PHP " PDO_DBLIB_FLAVOUR, 0 }
457 ,{ "host", "127.0.0.1", 0 }
458 ,{ "dbname", NULL, 0 }
459 ,{ "secure", NULL, 0 } /* DBSETLSECURE */
460 ,{ "version", NULL, 0 } /* DBSETLVERSION */
461 };
462
463 nvars = sizeof(vars)/sizeof(vars[0]);
464 nvers = sizeof(tdsver)/sizeof(tdsver[0]);
465
466 php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, nvars);
467
468 H = pecalloc(1, sizeof(*H), dbh->is_persistent);
469 H->login = dblogin();
470 H->err.sqlstate = dbh->error_code;
471 H->assume_national_character_set_strings = 0;
472 H->stringify_uniqueidentifier = 0;
473 H->skip_empty_rowsets = 0;
474 H->datetime_convert = 0;
475
476 if (!H->login) {
477 goto cleanup;
478 }
479
480 if (driver_options) {
481 int connect_timeout = pdo_attr_lval(driver_options, PDO_DBLIB_ATTR_CONNECTION_TIMEOUT, -1);
482 int query_timeout = pdo_attr_lval(driver_options, PDO_DBLIB_ATTR_QUERY_TIMEOUT, -1);
483 int timeout = pdo_attr_lval(driver_options, PDO_ATTR_TIMEOUT, 30);
484
485 if (connect_timeout == -1) {
486 connect_timeout = timeout;
487 }
488 if (query_timeout == -1) {
489 query_timeout = timeout;
490 }
491
492 dbsetlogintime(connect_timeout); /* Connection/Login Timeout */
493 dbsettime(query_timeout); /* Statement Timeout */
494
495 H->assume_national_character_set_strings = pdo_attr_lval(driver_options, PDO_ATTR_DEFAULT_STR_PARAM, 0) == PDO_PARAM_STR_NATL ? 1 : 0;
496 H->stringify_uniqueidentifier = pdo_attr_lval(driver_options, PDO_DBLIB_ATTR_STRINGIFY_UNIQUEIDENTIFIER, 0);
497 H->skip_empty_rowsets = pdo_attr_lval(driver_options, PDO_DBLIB_ATTR_SKIP_EMPTY_ROWSETS, 0);
498 H->datetime_convert = pdo_attr_lval(driver_options, PDO_DBLIB_ATTR_DATETIME_CONVERT, 0);
499 }
500
501 DBERRHANDLE(H->login, (EHANDLEFUNC) pdo_dblib_error_handler);
502 DBMSGHANDLE(H->login, (MHANDLEFUNC) pdo_dblib_msg_handler);
503
504 if(vars[5].optval) {
505 for(i=0;i<nvers;i++) {
506 if(strcmp(vars[5].optval,tdsver[i].key) == 0) {
507 if(FAIL==dbsetlversion(H->login, tdsver[i].value)) {
508 pdo_raise_impl_error(dbh, NULL, "HY000", "PDO_DBLIB: Failed to set version specified in connection string.");
509 goto cleanup;
510 }
511 break;
512 }
513 }
514
515 if (i==nvers) {
516 printf("Invalid version '%s'\n", vars[5].optval);
517 pdo_raise_impl_error(dbh, NULL, "HY000", "PDO_DBLIB: Invalid version specified in connection string.");
518 goto cleanup; /* unknown version specified */
519 }
520 }
521
522 if (dbh->username) {
523 if(FAIL == DBSETLUSER(H->login, dbh->username)) {
524 goto cleanup;
525 }
526 }
527
528 if (dbh->password) {
529 if(FAIL == DBSETLPWD(H->login, dbh->password)) {
530 goto cleanup;
531 }
532 }
533
534 #if !PHP_DBLIB_IS_MSSQL
535 if (vars[0].optval) {
536 DBSETLCHARSET(H->login, vars[0].optval);
537 }
538 #endif
539
540 DBSETLAPP(H->login, vars[1].optval);
541
542 /* DBSETLDBNAME is only available in FreeTDS 0.92 or above */
543 #ifdef DBSETLDBNAME
544 if (vars[3].optval) {
545 if(FAIL == DBSETLDBNAME(H->login, vars[3].optval)) goto cleanup;
546 }
547 #endif
548
549 H->link = dbopen(H->login, vars[2].optval);
550
551 if (!H->link) {
552 goto cleanup;
553 }
554
555 /*
556 * FreeTDS < 0.92 does not support the DBSETLDBNAME option
557 * Send use database here after login (Will not work with SQL Azure)
558 */
559 #ifndef DBSETLDBNAME
560 if (vars[3].optval) {
561 if(FAIL == dbuse(H->link, vars[3].optval)) goto cleanup;
562 }
563 #endif
564
565 #if PHP_DBLIB_IS_MSSQL
566 /* dblib do not return more than this length from text/image */
567 DBSETOPT(H->link, DBTEXTLIMIT, "2147483647");
568 #endif
569
570 /* limit text/image from network */
571 DBSETOPT(H->link, DBTEXTSIZE, "2147483647");
572
573 /* allow double quoted indentifiers */
574 DBSETOPT(H->link, DBQUOTEDIDENT, "1");
575
576 ret = 1;
577 dbh->max_escaped_char_length = 2;
578 dbh->alloc_own_columns = 1;
579
580 cleanup:
581 for (i = 0; i < nvars; i++) {
582 if (vars[i].freeme) {
583 efree(vars[i].optval);
584 }
585 }
586
587 dbh->methods = &dblib_methods;
588 dbh->driver_data = H;
589
590 if (!ret) {
591 zend_throw_exception_ex(php_pdo_get_exception(), DBLIB_G(err).dberr,
592 "SQLSTATE[%s] %s (severity %d)",
593 DBLIB_G(err).sqlstate,
594 DBLIB_G(err).dberrstr,
595 DBLIB_G(err).severity);
596 }
597
598 return ret;
599 }
600
601 const pdo_driver_t pdo_dblib_driver = {
602 #if PDO_DBLIB_IS_MSSQL
603 PDO_DRIVER_HEADER(mssql),
604 #elif defined(PHP_WIN32)
605 #define PDO_DBLIB_IS_SYBASE
606 PDO_DRIVER_HEADER(sybase),
607 #else
608 PDO_DRIVER_HEADER(dblib),
609 #endif
610 pdo_dblib_handle_factory
611 };
612
