1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2017 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.0 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_0.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 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include "php.h"
26 #include "php_ini.h"
27 #include "ext/standard/info.h"
28 #include "pdo/php_pdo.h"
29 #include "pdo/php_pdo_driver.h"
30 #include "php_pdo_odbc.h"
31 #include "php_pdo_odbc_int.h"
32 #include "zend_exceptions.h"
33
pdo_odbc_fetch_error_func(pdo_dbh_t * dbh,pdo_stmt_t * stmt,zval * info)34 static int pdo_odbc_fetch_error_func(pdo_dbh_t *dbh, pdo_stmt_t *stmt, zval *info)
35 {
36 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
37 pdo_odbc_errinfo *einfo = &H->einfo;
38 pdo_odbc_stmt *S = NULL;
39 zend_string *message = NULL;
40
41 if (stmt) {
42 S = (pdo_odbc_stmt*)stmt->driver_data;
43 einfo = &S->einfo;
44 }
45
46 message = strpprintf(0, "%s (%s[%ld] at %s:%d)",
47 einfo->last_err_msg,
48 einfo->what, einfo->last_error,
49 einfo->file, einfo->line);
50
51 add_next_index_long(info, einfo->last_error);
52 add_next_index_str(info, message);
53 add_next_index_string(info, einfo->last_state);
54
55 return 1;
56 }
57
58
pdo_odbc_error(pdo_dbh_t * dbh,pdo_stmt_t * stmt,PDO_ODBC_HSTMT statement,char * what,const char * file,int line)59 void pdo_odbc_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, PDO_ODBC_HSTMT statement, char *what, const char *file, int line) /* {{{ */
60 {
61 SQLRETURN rc;
62 SQLSMALLINT errmsgsize = 0;
63 SQLHANDLE eh;
64 SQLSMALLINT htype, recno = 1;
65 pdo_odbc_db_handle *H = (pdo_odbc_db_handle*)dbh->driver_data;
66 pdo_odbc_errinfo *einfo = &H->einfo;
67 pdo_odbc_stmt *S = NULL;
68 pdo_error_type *pdo_err = &dbh->error_code;
69
70 if (stmt) {
71 S = (pdo_odbc_stmt*)stmt->driver_data;
72
73 einfo = &S->einfo;
74 pdo_err = &stmt->error_code;
75 }
76
77 if (statement == SQL_NULL_HSTMT && S) {
78 statement = S->stmt;
79 }
80
81 if (statement) {
82 htype = SQL_HANDLE_STMT;
83 eh = statement;
84 } else if (H->dbc) {
85 htype = SQL_HANDLE_DBC;
86 eh = H->dbc;
87 } else {
88 htype = SQL_HANDLE_ENV;
89 eh = H->env;
90 }
91
92 rc = SQLGetDiagRec(htype, eh, recno++, einfo->last_state, &einfo->last_error,
93 einfo->last_err_msg, sizeof(einfo->last_err_msg)-1, &errmsgsize);
94
95 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
96 errmsgsize = 0;
97 }
98
99 einfo->last_err_msg[errmsgsize] = '\0';
100 einfo->file = file;
101 einfo->line = line;
102 einfo->what = what;
103
104 strcpy(*pdo_err, einfo->last_state);
105 /* printf("@@ SQLSTATE[%s] %s\n", *pdo_err, einfo->last_err_msg); */
106 if (!dbh->methods) {
107 zend_throw_exception_ex(php_pdo_get_exception(), einfo->last_error, "SQLSTATE[%s] %s: %d %s",
108 *pdo_err, what, einfo->last_error, einfo->last_err_msg);
109 }
110
111 /* just like a cursor, once you start pulling, you need to keep
112 * going until the end; SQL Server (at least) will mess with the
113 * actual cursor state if you don't finish retrieving all the
114 * diagnostic records (which can be generated by PRINT statements
115 * in the query, for instance). */
116 while (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
117 char discard_state[6];
118 char discard_buf[1024];
119 SQLINTEGER code;
120 rc = SQLGetDiagRec(htype, eh, recno++, discard_state, &code,
121 discard_buf, sizeof(discard_buf)-1, &errmsgsize);
122 }
123
124 }
125 /* }}} */
126
odbc_handle_closer(pdo_dbh_t * dbh)127 static int odbc_handle_closer(pdo_dbh_t *dbh)
128 {
129 pdo_odbc_db_handle *H = (pdo_odbc_db_handle*)dbh->driver_data;
130
131 if (H->dbc != SQL_NULL_HANDLE) {
132 SQLEndTran(SQL_HANDLE_DBC, H->dbc, SQL_ROLLBACK);
133 SQLDisconnect(H->dbc);
134 SQLFreeHandle(SQL_HANDLE_DBC, H->dbc);
135 H->dbc = NULL;
136 }
137 SQLFreeHandle(SQL_HANDLE_ENV, H->env);
138 H->env = NULL;
139 pefree(H, dbh->is_persistent);
140 dbh->driver_data = NULL;
141
142 return 0;
143 }
144
odbc_handle_preparer(pdo_dbh_t * dbh,const char * sql,size_t sql_len,pdo_stmt_t * stmt,zval * driver_options)145 static int odbc_handle_preparer(pdo_dbh_t *dbh, const char *sql, size_t sql_len, pdo_stmt_t *stmt, zval *driver_options)
146 {
147 RETCODE rc;
148 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
149 pdo_odbc_stmt *S = ecalloc(1, sizeof(*S));
150 enum pdo_cursor_type cursor_type = PDO_CURSOR_FWDONLY;
151 int ret;
152 char *nsql = NULL;
153 size_t nsql_len = 0;
154
155 S->H = H;
156 S->assume_utf8 = H->assume_utf8;
157
158 /* before we prepare, we need to peek at the query; if it uses named parameters,
159 * we want PDO to rewrite them for us */
160 stmt->supports_placeholders = PDO_PLACEHOLDER_POSITIONAL;
161 ret = pdo_parse_params(stmt, (char*)sql, sql_len, &nsql, &nsql_len);
162
163 if (ret == 1) {
164 /* query was re-written */
165 sql = nsql;
166 } else if (ret == -1) {
167 /* couldn't grok it */
168 strcpy(dbh->error_code, stmt->error_code);
169 efree(S);
170 return 0;
171 }
172
173 rc = SQLAllocHandle(SQL_HANDLE_STMT, H->dbc, &S->stmt);
174
175 if (rc == SQL_INVALID_HANDLE || rc == SQL_ERROR) {
176 efree(S);
177 if (nsql) {
178 efree(nsql);
179 }
180 pdo_odbc_drv_error("SQLAllocStmt");
181 return 0;
182 }
183
184 cursor_type = pdo_attr_lval(driver_options, PDO_ATTR_CURSOR, PDO_CURSOR_FWDONLY);
185 if (cursor_type != PDO_CURSOR_FWDONLY) {
186 rc = SQLSetStmtAttr(S->stmt, SQL_ATTR_CURSOR_SCROLLABLE, (void*)SQL_SCROLLABLE, 0);
187 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
188 pdo_odbc_stmt_error("SQLSetStmtAttr: SQL_ATTR_CURSOR_SCROLLABLE");
189 SQLFreeHandle(SQL_HANDLE_STMT, S->stmt);
190 if (nsql) {
191 efree(nsql);
192 }
193 return 0;
194 }
195 }
196
197 rc = SQLPrepare(S->stmt, (char*)sql, SQL_NTS);
198 if (nsql) {
199 efree(nsql);
200 }
201
202 stmt->driver_data = S;
203 stmt->methods = &odbc_stmt_methods;
204
205 if (rc != SQL_SUCCESS) {
206 pdo_odbc_stmt_error("SQLPrepare");
207 if (rc != SQL_SUCCESS_WITH_INFO) {
208 /* clone error information into the db handle */
209 strcpy(H->einfo.last_err_msg, S->einfo.last_err_msg);
210 H->einfo.file = S->einfo.file;
211 H->einfo.line = S->einfo.line;
212 H->einfo.what = S->einfo.what;
213 strcpy(dbh->error_code, stmt->error_code);
214 }
215 }
216
217 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
218 return 0;
219 }
220 return 1;
221 }
222
odbc_handle_doer(pdo_dbh_t * dbh,const char * sql,size_t sql_len)223 static zend_long odbc_handle_doer(pdo_dbh_t *dbh, const char *sql, size_t sql_len)
224 {
225 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
226 RETCODE rc;
227 SQLLEN row_count = -1;
228 PDO_ODBC_HSTMT stmt;
229
230 rc = SQLAllocHandle(SQL_HANDLE_STMT, H->dbc, &stmt);
231 if (rc != SQL_SUCCESS) {
232 pdo_odbc_drv_error("SQLAllocHandle: STMT");
233 return -1;
234 }
235
236 rc = SQLExecDirect(stmt, (char *)sql, sql_len);
237
238 if (rc == SQL_NO_DATA) {
239 /* If SQLExecDirect executes a searched update or delete statement that
240 * does not affect any rows at the data source, the call to
241 * SQLExecDirect returns SQL_NO_DATA. */
242 row_count = 0;
243 goto out;
244 }
245
246 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
247 pdo_odbc_doer_error("SQLExecDirect");
248 goto out;
249 }
250
251 rc = SQLRowCount(stmt, &row_count);
252 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
253 pdo_odbc_doer_error("SQLRowCount");
254 goto out;
255 }
256 if (row_count == -1) {
257 row_count = 0;
258 }
259 out:
260 SQLFreeHandle(SQL_HANDLE_STMT, stmt);
261 return row_count;
262 }
263
odbc_handle_quoter(pdo_dbh_t * dbh,const char * unquoted,size_t unquotedlen,char ** quoted,size_t * quotedlen,enum pdo_param_type param_type)264 static int odbc_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, size_t unquotedlen, char **quoted, size_t *quotedlen, enum pdo_param_type param_type )
265 {
266 /* pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data; */
267 /* TODO: figure it out */
268 return 0;
269 }
270
odbc_handle_begin(pdo_dbh_t * dbh)271 static int odbc_handle_begin(pdo_dbh_t *dbh)
272 {
273 if (dbh->auto_commit) {
274 /* we need to disable auto-commit now, to be able to initiate a transaction */
275 RETCODE rc;
276 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
277
278 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)SQL_AUTOCOMMIT_OFF, SQL_IS_INTEGER);
279 if (rc != SQL_SUCCESS) {
280 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT = OFF");
281 return 0;
282 }
283 }
284 return 1;
285 }
286
odbc_handle_commit(pdo_dbh_t * dbh)287 static int odbc_handle_commit(pdo_dbh_t *dbh)
288 {
289 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
290 RETCODE rc;
291
292 rc = SQLEndTran(SQL_HANDLE_DBC, H->dbc, SQL_COMMIT);
293
294 if (rc != SQL_SUCCESS) {
295 pdo_odbc_drv_error("SQLEndTran: Commit");
296
297 if (rc != SQL_SUCCESS_WITH_INFO) {
298 return 0;
299 }
300 }
301
302 if (dbh->auto_commit) {
303 /* turn auto-commit back on again */
304 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)SQL_AUTOCOMMIT_ON, SQL_IS_INTEGER);
305 if (rc != SQL_SUCCESS) {
306 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT = ON");
307 return 0;
308 }
309 }
310 return 1;
311 }
312
odbc_handle_rollback(pdo_dbh_t * dbh)313 static int odbc_handle_rollback(pdo_dbh_t *dbh)
314 {
315 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
316 RETCODE rc;
317
318 rc = SQLEndTran(SQL_HANDLE_DBC, H->dbc, SQL_ROLLBACK);
319
320 if (rc != SQL_SUCCESS) {
321 pdo_odbc_drv_error("SQLEndTran: Rollback");
322
323 if (rc != SQL_SUCCESS_WITH_INFO) {
324 return 0;
325 }
326 }
327 if (dbh->auto_commit && H->dbc) {
328 /* turn auto-commit back on again */
329 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)SQL_AUTOCOMMIT_ON, SQL_IS_INTEGER);
330 if (rc != SQL_SUCCESS) {
331 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT = ON");
332 return 0;
333 }
334 }
335
336 return 1;
337 }
338
odbc_handle_set_attr(pdo_dbh_t * dbh,zend_long attr,zval * val)339 static int odbc_handle_set_attr(pdo_dbh_t *dbh, zend_long attr, zval *val)
340 {
341 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
342 switch (attr) {
343 case PDO_ODBC_ATTR_ASSUME_UTF8:
344 H->assume_utf8 = zval_is_true(val);
345 return 1;
346 default:
347 strcpy(H->einfo.last_err_msg, "Unknown Attribute");
348 H->einfo.what = "setAttribute";
349 strcpy(H->einfo.last_state, "IM001");
350 return -1;
351 }
352 }
353
odbc_handle_get_attr(pdo_dbh_t * dbh,zend_long attr,zval * val)354 static int odbc_handle_get_attr(pdo_dbh_t *dbh, zend_long attr, zval *val)
355 {
356 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
357 switch (attr) {
358 case PDO_ATTR_CLIENT_VERSION:
359 ZVAL_STRING(val, "ODBC-" PDO_ODBC_TYPE);
360 return 1;
361
362 case PDO_ATTR_SERVER_VERSION:
363 case PDO_ATTR_PREFETCH:
364 case PDO_ATTR_TIMEOUT:
365 case PDO_ATTR_SERVER_INFO:
366 case PDO_ATTR_CONNECTION_STATUS:
367 break;
368 case PDO_ODBC_ATTR_ASSUME_UTF8:
369 ZVAL_BOOL(val, H->assume_utf8 ? 1 : 0);
370 return 1;
371
372 }
373 return 0;
374 }
375
376 static struct pdo_dbh_methods odbc_methods = {
377 odbc_handle_closer,
378 odbc_handle_preparer,
379 odbc_handle_doer,
380 odbc_handle_quoter,
381 odbc_handle_begin,
382 odbc_handle_commit,
383 odbc_handle_rollback,
384 odbc_handle_set_attr,
385 NULL, /* last id */
386 pdo_odbc_fetch_error_func,
387 odbc_handle_get_attr, /* get attr */
388 NULL, /* check_liveness */
389 };
390
pdo_odbc_handle_factory(pdo_dbh_t * dbh,zval * driver_options)391 static int pdo_odbc_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ */
392 {
393 pdo_odbc_db_handle *H;
394 RETCODE rc;
395 int use_direct = 0;
396 zend_ulong cursor_lib;
397
398 H = pecalloc(1, sizeof(*H), dbh->is_persistent);
399
400 dbh->driver_data = H;
401
402 SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &H->env);
403 rc = SQLSetEnvAttr(H->env, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
404
405 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
406 pdo_odbc_drv_error("SQLSetEnvAttr: ODBC3");
407 goto fail;
408 }
409
410 #ifdef SQL_ATTR_CONNECTION_POOLING
411 if (pdo_odbc_pool_on != SQL_CP_OFF) {
412 rc = SQLSetEnvAttr(H->env, SQL_ATTR_CP_MATCH, (void*)pdo_odbc_pool_mode, 0);
413 if (rc != SQL_SUCCESS) {
414 pdo_odbc_drv_error("SQLSetEnvAttr: SQL_ATTR_CP_MATCH");
415 goto fail;
416 }
417 }
418 #endif
419
420 rc = SQLAllocHandle(SQL_HANDLE_DBC, H->env, &H->dbc);
421 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
422 pdo_odbc_drv_error("SQLAllocHandle (DBC)");
423 goto fail;
424 }
425
426 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT,
427 (SQLPOINTER)(dbh->auto_commit ? SQL_AUTOCOMMIT_ON : SQL_AUTOCOMMIT_OFF), SQL_IS_INTEGER);
428 if (rc != SQL_SUCCESS) {
429 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT");
430 goto fail;
431 }
432
433 /* set up the cursor library, if needed, or if configured explicitly */
434 cursor_lib = pdo_attr_lval(driver_options, PDO_ODBC_ATTR_USE_CURSOR_LIBRARY, SQL_CUR_USE_IF_NEEDED);
435 rc = SQLSetConnectAttr(H->dbc, SQL_ODBC_CURSORS, (void*)cursor_lib, SQL_IS_INTEGER);
436 if (rc != SQL_SUCCESS && cursor_lib != SQL_CUR_USE_IF_NEEDED) {
437 pdo_odbc_drv_error("SQLSetConnectAttr SQL_ODBC_CURSORS");
438 goto fail;
439 }
440
441 if (strchr(dbh->data_source, ';')) {
442 char dsnbuf[1024];
443 SQLSMALLINT dsnbuflen;
444
445 use_direct = 1;
446
447 /* Force UID and PWD to be set in the DSN */
448 if (dbh->username && *dbh->username && !strstr(dbh->data_source, "uid")
449 && !strstr(dbh->data_source, "UID")) {
450 char *dsn;
451 spprintf(&dsn, 0, "%s;UID=%s;PWD=%s", dbh->data_source, dbh->username, dbh->password);
452 pefree((char*)dbh->data_source, dbh->is_persistent);
453 dbh->data_source = dsn;
454 }
455
456 rc = SQLDriverConnect(H->dbc, NULL, (char*)dbh->data_source, strlen(dbh->data_source),
457 dsnbuf, sizeof(dsnbuf)-1, &dsnbuflen, SQL_DRIVER_NOPROMPT);
458 }
459 if (!use_direct) {
460 rc = SQLConnect(H->dbc, (char*)dbh->data_source, SQL_NTS, dbh->username, SQL_NTS, dbh->password, SQL_NTS);
461 }
462
463 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
464 pdo_odbc_drv_error(use_direct ? "SQLDriverConnect" : "SQLConnect");
465 goto fail;
466 }
467
468 /* TODO: if we want to play nicely, we should check to see if the driver really supports ODBC v3 or not */
469
470 dbh->methods = &odbc_methods;
471 dbh->alloc_own_columns = 1;
472
473 return 1;
474
475 fail:
476 dbh->methods = &odbc_methods;
477 return 0;
478 }
479 /* }}} */
480
481 pdo_driver_t pdo_odbc_driver = {
482 PDO_DRIVER_HEADER(odbc),
483 pdo_odbc_handle_factory
484 };
485
486 /*
487 * Local variables:
488 * tab-width: 4
489 * c-basic-offset: 4
490 * End:
491 * vim600: noet sw=4 ts=4 fdm=marker
492 * vim<600: noet sw=4 ts=4
493 */
494
