1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2018 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.0 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 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22
23 #include "php.h"
24 #include "php_ini.h"
25 #include "ext/standard/info.h"
26 #include "pdo/php_pdo.h"
27 #include "pdo/php_pdo_driver.h"
28 #include "php_pdo_odbc.h"
29 #include "php_pdo_odbc_int.h"
30 #include "zend_exceptions.h"
31
pdo_odbc_fetch_error_func(pdo_dbh_t * dbh,pdo_stmt_t * stmt,zval * info)32 static int pdo_odbc_fetch_error_func(pdo_dbh_t *dbh, pdo_stmt_t *stmt, zval *info)
33 {
34 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
35 pdo_odbc_errinfo *einfo = &H->einfo;
36 pdo_odbc_stmt *S = NULL;
37 zend_string *message = NULL;
38
39 if (stmt) {
40 S = (pdo_odbc_stmt*)stmt->driver_data;
41 einfo = &S->einfo;
42 }
43
44 message = strpprintf(0, "%s (%s[%ld] at %s:%d)",
45 einfo->last_err_msg,
46 einfo->what, einfo->last_error,
47 einfo->file, einfo->line);
48
49 add_next_index_long(info, einfo->last_error);
50 add_next_index_str(info, message);
51 add_next_index_string(info, einfo->last_state);
52
53 return 1;
54 }
55
56
pdo_odbc_error(pdo_dbh_t * dbh,pdo_stmt_t * stmt,PDO_ODBC_HSTMT statement,char * what,const char * file,int line)57 void pdo_odbc_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, PDO_ODBC_HSTMT statement, char *what, const char *file, int line) /* {{{ */
58 {
59 SQLRETURN rc;
60 SQLSMALLINT errmsgsize = 0;
61 SQLHANDLE eh;
62 SQLSMALLINT htype, recno = 1;
63 pdo_odbc_db_handle *H = (pdo_odbc_db_handle*)dbh->driver_data;
64 pdo_odbc_errinfo *einfo = &H->einfo;
65 pdo_odbc_stmt *S = NULL;
66 pdo_error_type *pdo_err = &dbh->error_code;
67
68 if (stmt) {
69 S = (pdo_odbc_stmt*)stmt->driver_data;
70
71 einfo = &S->einfo;
72 pdo_err = &stmt->error_code;
73 }
74
75 if (statement == SQL_NULL_HSTMT && S) {
76 statement = S->stmt;
77 }
78
79 if (statement) {
80 htype = SQL_HANDLE_STMT;
81 eh = statement;
82 } else if (H->dbc) {
83 htype = SQL_HANDLE_DBC;
84 eh = H->dbc;
85 } else {
86 htype = SQL_HANDLE_ENV;
87 eh = H->env;
88 }
89
90 rc = SQLGetDiagRec(htype, eh, recno++, einfo->last_state, &einfo->last_error,
91 einfo->last_err_msg, sizeof(einfo->last_err_msg)-1, &errmsgsize);
92
93 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
94 errmsgsize = 0;
95 }
96
97 einfo->last_err_msg[errmsgsize] = '\0';
98 einfo->file = file;
99 einfo->line = line;
100 einfo->what = what;
101
102 strcpy(*pdo_err, einfo->last_state);
103 /* printf("@@ SQLSTATE[%s] %s\n", *pdo_err, einfo->last_err_msg); */
104 if (!dbh->methods) {
105 zend_throw_exception_ex(php_pdo_get_exception(), einfo->last_error, "SQLSTATE[%s] %s: %d %s",
106 *pdo_err, what, einfo->last_error, einfo->last_err_msg);
107 }
108
109 /* just like a cursor, once you start pulling, you need to keep
110 * going until the end; SQL Server (at least) will mess with the
111 * actual cursor state if you don't finish retrieving all the
112 * diagnostic records (which can be generated by PRINT statements
113 * in the query, for instance). */
114 while (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
115 char discard_state[6];
116 char discard_buf[1024];
117 SQLINTEGER code;
118 rc = SQLGetDiagRec(htype, eh, recno++, discard_state, &code,
119 discard_buf, sizeof(discard_buf)-1, &errmsgsize);
120 }
121
122 }
123 /* }}} */
124
odbc_handle_closer(pdo_dbh_t * dbh)125 static int odbc_handle_closer(pdo_dbh_t *dbh)
126 {
127 pdo_odbc_db_handle *H = (pdo_odbc_db_handle*)dbh->driver_data;
128
129 if (H->dbc != SQL_NULL_HANDLE) {
130 SQLEndTran(SQL_HANDLE_DBC, H->dbc, SQL_ROLLBACK);
131 SQLDisconnect(H->dbc);
132 SQLFreeHandle(SQL_HANDLE_DBC, H->dbc);
133 H->dbc = NULL;
134 }
135 SQLFreeHandle(SQL_HANDLE_ENV, H->env);
136 H->env = NULL;
137 pefree(H, dbh->is_persistent);
138 dbh->driver_data = NULL;
139
140 return 0;
141 }
142
odbc_handle_preparer(pdo_dbh_t * dbh,const char * sql,size_t sql_len,pdo_stmt_t * stmt,zval * driver_options)143 static int odbc_handle_preparer(pdo_dbh_t *dbh, const char *sql, size_t sql_len, pdo_stmt_t *stmt, zval *driver_options)
144 {
145 RETCODE rc;
146 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
147 pdo_odbc_stmt *S = ecalloc(1, sizeof(*S));
148 enum pdo_cursor_type cursor_type = PDO_CURSOR_FWDONLY;
149 int ret;
150 char *nsql = NULL;
151 size_t nsql_len = 0;
152
153 S->H = H;
154 S->assume_utf8 = H->assume_utf8;
155
156 /* before we prepare, we need to peek at the query; if it uses named parameters,
157 * we want PDO to rewrite them for us */
158 stmt->supports_placeholders = PDO_PLACEHOLDER_POSITIONAL;
159 ret = pdo_parse_params(stmt, (char*)sql, sql_len, &nsql, &nsql_len);
160
161 if (ret == 1) {
162 /* query was re-written */
163 sql = nsql;
164 } else if (ret == -1) {
165 /* couldn't grok it */
166 strcpy(dbh->error_code, stmt->error_code);
167 efree(S);
168 return 0;
169 }
170
171 rc = SQLAllocHandle(SQL_HANDLE_STMT, H->dbc, &S->stmt);
172
173 if (rc == SQL_INVALID_HANDLE || rc == SQL_ERROR) {
174 efree(S);
175 if (nsql) {
176 efree(nsql);
177 }
178 pdo_odbc_drv_error("SQLAllocStmt");
179 return 0;
180 }
181
182 stmt->driver_data = S;
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->methods = &odbc_stmt_methods;
203
204 if (rc != SQL_SUCCESS) {
205 pdo_odbc_stmt_error("SQLPrepare");
206 if (rc != SQL_SUCCESS_WITH_INFO) {
207 /* clone error information into the db handle */
208 strcpy(H->einfo.last_err_msg, S->einfo.last_err_msg);
209 H->einfo.file = S->einfo.file;
210 H->einfo.line = S->einfo.line;
211 H->einfo.what = S->einfo.what;
212 strcpy(dbh->error_code, stmt->error_code);
213 }
214 }
215
216 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
217 return 0;
218 }
219 return 1;
220 }
221
odbc_handle_doer(pdo_dbh_t * dbh,const char * sql,size_t sql_len)222 static zend_long odbc_handle_doer(pdo_dbh_t *dbh, const char *sql, size_t sql_len)
223 {
224 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
225 RETCODE rc;
226 SQLLEN row_count = -1;
227 PDO_ODBC_HSTMT stmt;
228
229 rc = SQLAllocHandle(SQL_HANDLE_STMT, H->dbc, &stmt);
230 if (rc != SQL_SUCCESS) {
231 pdo_odbc_drv_error("SQLAllocHandle: STMT");
232 return -1;
233 }
234
235 rc = SQLExecDirect(stmt, (char *)sql, sql_len);
236
237 if (rc == SQL_NO_DATA) {
238 /* If SQLExecDirect executes a searched update or delete statement that
239 * does not affect any rows at the data source, the call to
240 * SQLExecDirect returns SQL_NO_DATA. */
241 row_count = 0;
242 goto out;
243 }
244
245 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
246 pdo_odbc_doer_error("SQLExecDirect");
247 goto out;
248 }
249
250 rc = SQLRowCount(stmt, &row_count);
251 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
252 pdo_odbc_doer_error("SQLRowCount");
253 goto out;
254 }
255 if (row_count == -1) {
256 row_count = 0;
257 }
258 out:
259 SQLFreeHandle(SQL_HANDLE_STMT, stmt);
260 return row_count;
261 }
262
odbc_handle_quoter(pdo_dbh_t * dbh,const char * unquoted,size_t unquotedlen,char ** quoted,size_t * quotedlen,enum pdo_param_type param_type)263 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 )
264 {
265 /* pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data; */
266 /* TODO: figure it out */
267 return 0;
268 }
269
odbc_handle_begin(pdo_dbh_t * dbh)270 static int odbc_handle_begin(pdo_dbh_t *dbh)
271 {
272 if (dbh->auto_commit) {
273 /* we need to disable auto-commit now, to be able to initiate a transaction */
274 RETCODE rc;
275 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
276
277 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)SQL_AUTOCOMMIT_OFF, SQL_IS_INTEGER);
278 if (rc != SQL_SUCCESS) {
279 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT = OFF");
280 return 0;
281 }
282 }
283 return 1;
284 }
285
odbc_handle_commit(pdo_dbh_t * dbh)286 static int odbc_handle_commit(pdo_dbh_t *dbh)
287 {
288 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
289 RETCODE rc;
290
291 rc = SQLEndTran(SQL_HANDLE_DBC, H->dbc, SQL_COMMIT);
292
293 if (rc != SQL_SUCCESS) {
294 pdo_odbc_drv_error("SQLEndTran: Commit");
295
296 if (rc != SQL_SUCCESS_WITH_INFO) {
297 return 0;
298 }
299 }
300
301 if (dbh->auto_commit) {
302 /* turn auto-commit back on again */
303 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)SQL_AUTOCOMMIT_ON, SQL_IS_INTEGER);
304 if (rc != SQL_SUCCESS) {
305 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT = ON");
306 return 0;
307 }
308 }
309 return 1;
310 }
311
odbc_handle_rollback(pdo_dbh_t * dbh)312 static int odbc_handle_rollback(pdo_dbh_t *dbh)
313 {
314 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
315 RETCODE rc;
316
317 rc = SQLEndTran(SQL_HANDLE_DBC, H->dbc, SQL_ROLLBACK);
318
319 if (rc != SQL_SUCCESS) {
320 pdo_odbc_drv_error("SQLEndTran: Rollback");
321
322 if (rc != SQL_SUCCESS_WITH_INFO) {
323 return 0;
324 }
325 }
326 if (dbh->auto_commit && H->dbc) {
327 /* turn auto-commit back on again */
328 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)SQL_AUTOCOMMIT_ON, SQL_IS_INTEGER);
329 if (rc != SQL_SUCCESS) {
330 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT = ON");
331 return 0;
332 }
333 }
334
335 return 1;
336 }
337
odbc_handle_set_attr(pdo_dbh_t * dbh,zend_long attr,zval * val)338 static int odbc_handle_set_attr(pdo_dbh_t *dbh, zend_long attr, zval *val)
339 {
340 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
341 switch (attr) {
342 case PDO_ODBC_ATTR_ASSUME_UTF8:
343 H->assume_utf8 = zval_is_true(val);
344 return 1;
345 default:
346 strcpy(H->einfo.last_err_msg, "Unknown Attribute");
347 H->einfo.what = "setAttribute";
348 strcpy(H->einfo.last_state, "IM001");
349 return 0;
350 }
351 }
352
odbc_handle_get_attr(pdo_dbh_t * dbh,zend_long attr,zval * val)353 static int odbc_handle_get_attr(pdo_dbh_t *dbh, zend_long attr, zval *val)
354 {
355 pdo_odbc_db_handle *H = (pdo_odbc_db_handle *)dbh->driver_data;
356 switch (attr) {
357 case PDO_ATTR_CLIENT_VERSION:
358 ZVAL_STRING(val, "ODBC-" PDO_ODBC_TYPE);
359 return 1;
360
361 case PDO_ATTR_SERVER_VERSION:
362 case PDO_ATTR_PREFETCH:
363 case PDO_ATTR_TIMEOUT:
364 case PDO_ATTR_SERVER_INFO:
365 case PDO_ATTR_CONNECTION_STATUS:
366 break;
367 case PDO_ODBC_ATTR_ASSUME_UTF8:
368 ZVAL_BOOL(val, H->assume_utf8 ? 1 : 0);
369 return 1;
370
371 }
372 return 0;
373 }
374
375 static const struct pdo_dbh_methods odbc_methods = {
376 odbc_handle_closer,
377 odbc_handle_preparer,
378 odbc_handle_doer,
379 odbc_handle_quoter,
380 odbc_handle_begin,
381 odbc_handle_commit,
382 odbc_handle_rollback,
383 odbc_handle_set_attr,
384 NULL, /* last id */
385 pdo_odbc_fetch_error_func,
386 odbc_handle_get_attr, /* get attr */
387 NULL, /* check_liveness */
388 };
389
pdo_odbc_handle_factory(pdo_dbh_t * dbh,zval * driver_options)390 static int pdo_odbc_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ */
391 {
392 pdo_odbc_db_handle *H;
393 RETCODE rc;
394 int use_direct = 0;
395 zend_ulong cursor_lib;
396
397 H = pecalloc(1, sizeof(*H), dbh->is_persistent);
398
399 dbh->driver_data = H;
400
401 SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &H->env);
402 rc = SQLSetEnvAttr(H->env, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
403
404 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
405 pdo_odbc_drv_error("SQLSetEnvAttr: ODBC3");
406 goto fail;
407 }
408
409 #ifdef SQL_ATTR_CONNECTION_POOLING
410 if (pdo_odbc_pool_on != SQL_CP_OFF) {
411 rc = SQLSetEnvAttr(H->env, SQL_ATTR_CP_MATCH, (void*)pdo_odbc_pool_mode, 0);
412 if (rc != SQL_SUCCESS) {
413 pdo_odbc_drv_error("SQLSetEnvAttr: SQL_ATTR_CP_MATCH");
414 goto fail;
415 }
416 }
417 #endif
418
419 rc = SQLAllocHandle(SQL_HANDLE_DBC, H->env, &H->dbc);
420 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
421 pdo_odbc_drv_error("SQLAllocHandle (DBC)");
422 goto fail;
423 }
424
425 rc = SQLSetConnectAttr(H->dbc, SQL_ATTR_AUTOCOMMIT,
426 (SQLPOINTER)(dbh->auto_commit ? SQL_AUTOCOMMIT_ON : SQL_AUTOCOMMIT_OFF), SQL_IS_INTEGER);
427 if (rc != SQL_SUCCESS) {
428 pdo_odbc_drv_error("SQLSetConnectAttr AUTOCOMMIT");
429 goto fail;
430 }
431
432 /* set up the cursor library, if needed, or if configured explicitly */
433 cursor_lib = pdo_attr_lval(driver_options, PDO_ODBC_ATTR_USE_CURSOR_LIBRARY, SQL_CUR_USE_IF_NEEDED);
434 rc = SQLSetConnectAttr(H->dbc, SQL_ODBC_CURSORS, (void*)cursor_lib, SQL_IS_INTEGER);
435 if (rc != SQL_SUCCESS && cursor_lib != SQL_CUR_USE_IF_NEEDED) {
436 pdo_odbc_drv_error("SQLSetConnectAttr SQL_ODBC_CURSORS");
437 goto fail;
438 }
439
440 if (strchr(dbh->data_source, ';')) {
441 char dsnbuf[1024];
442 SQLSMALLINT dsnbuflen;
443
444 use_direct = 1;
445
446 /* Force UID and PWD to be set in the DSN */
447 if (dbh->username && *dbh->username && !strstr(dbh->data_source, "uid")
448 && !strstr(dbh->data_source, "UID")) {
449 char *dsn;
450 spprintf(&dsn, 0, "%s;UID=%s;PWD=%s", dbh->data_source, dbh->username, dbh->password);
451 pefree((char*)dbh->data_source, dbh->is_persistent);
452 dbh->data_source = dsn;
453 }
454
455 rc = SQLDriverConnect(H->dbc, NULL, (char*)dbh->data_source, strlen(dbh->data_source),
456 dsnbuf, sizeof(dsnbuf)-1, &dsnbuflen, SQL_DRIVER_NOPROMPT);
457 }
458 if (!use_direct) {
459 rc = SQLConnect(H->dbc, (char*)dbh->data_source, SQL_NTS, dbh->username, SQL_NTS, dbh->password, SQL_NTS);
460 }
461
462 if (rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
463 pdo_odbc_drv_error(use_direct ? "SQLDriverConnect" : "SQLConnect");
464 goto fail;
465 }
466
467 /* TODO: if we want to play nicely, we should check to see if the driver really supports ODBC v3 or not */
468
469 dbh->methods = &odbc_methods;
470 dbh->alloc_own_columns = 1;
471
472 return 1;
473
474 fail:
475 dbh->methods = &odbc_methods;
476 return 0;
477 }
478 /* }}} */
479
480 const pdo_driver_t pdo_odbc_driver = {
481 PDO_DRIVER_HEADER(odbc),
482 pdo_odbc_handle_factory
483 };
484
485 /*
486 * Local variables:
487 * tab-width: 4
488 * c-basic-offset: 4
489 * End:
490 * vim600: noet sw=4 ts=4 fdm=marker
491 * vim<600: noet sw=4 ts=4
492 */
493
