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