1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2017 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 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/php_string.h"
29 #include "ext/standard/info.h"
30 #include "pdo/php_pdo.h"
31 #include "pdo/php_pdo_driver.h"
32 #include "php_pdo_dblib.h"
33 #include "php_pdo_dblib_int.h"
34 #include "zend_exceptions.h"
35
36
37 /* {{{ pdo_dblib_get_field_name
38 *
39 * Return the data type name for a given TDS number
40 *
41 */
pdo_dblib_get_field_name(int type)42 static char *pdo_dblib_get_field_name(int type)
43 {
44 /*
45 * I don't return dbprtype(type) because it does not fully describe the type
46 * (example: varchar is reported as char by dbprtype)
47 *
48 * FIX ME: Cache datatypes from server systypes table in pdo_dblib_handle_factory()
49 * to make this future proof.
50 */
51
52 switch (type) {
53 case 31: return "nvarchar";
54 case 34: return "image";
55 case 35: return "text";
56 case 36: return "uniqueidentifier";
57 case 37: return "varbinary"; /* & timestamp - Sybase AS12 */
58 case 38: return "bigint"; /* & bigintn - Sybase AS12 */
59 case 39: return "varchar"; /* & sysname & nvarchar - Sybase AS12 */
60 case 40: return "date";
61 case 41: return "time";
62 case 42: return "datetime2";
63 case 43: return "datetimeoffset";
64 case 45: return "binary"; /* Sybase AS12 */
65 case 47: return "char"; /* & nchar & uniqueidentifierstr Sybase AS12 */
66 case 48: return "tinyint";
67 case 50: return "bit"; /* Sybase AS12 */
68 case 52: return "smallint";
69 case 55: return "decimal"; /* Sybase AS12 */
70 case 56: return "int";
71 case 58: return "smalldatetime";
72 case 59: return "real";
73 case 60: return "money";
74 case 61: return "datetime";
75 case 62: return "float";
76 case 63: return "numeric"; /* or uint, ubigint, usmallint Sybase AS12 */
77 case 98: return "sql_variant";
78 case 99: return "ntext";
79 case 104: return "bit";
80 case 106: return "decimal"; /* decimal n on sybase */
81 case 108: return "numeric"; /* numeric n on sybase */
82 case 122: return "smallmoney";
83 case 127: return "bigint";
84 case 165: return "varbinary";
85 case 167: return "varchar";
86 case 173: return "binary";
87 case 175: return "char";
88 case 189: return "timestamp";
89 case 231: return "nvarchar";
90 case 239: return "nchar";
91 case 240: return "geometry";
92 case 241: return "xml";
93 default: return "unknown";
94 }
95 }
96 /* }}} */
97
pdo_dblib_stmt_cursor_closer(pdo_stmt_t * stmt)98 static int pdo_dblib_stmt_cursor_closer(pdo_stmt_t *stmt)
99 {
100 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
101 pdo_dblib_db_handle *H = S->H;
102
103 /* Cancel any pending results */
104 dbcancel(H->link);
105
106 pdo_dblib_err_dtor(&H->err);
107
108 return 1;
109 }
110
pdo_dblib_stmt_dtor(pdo_stmt_t * stmt)111 static int pdo_dblib_stmt_dtor(pdo_stmt_t *stmt)
112 {
113 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
114
115 pdo_dblib_err_dtor(&S->err);
116
117 efree(S);
118
119 return 1;
120 }
121
pdo_dblib_stmt_next_rowset_no_cancel(pdo_stmt_t * stmt)122 static int pdo_dblib_stmt_next_rowset_no_cancel(pdo_stmt_t *stmt)
123 {
124 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
125 pdo_dblib_db_handle *H = S->H;
126 RETCODE ret;
127
128 ret = dbresults(H->link);
129
130 if (FAIL == ret) {
131 pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbresults() returned FAIL");
132 return 0;
133 }
134
135 if(NO_MORE_RESULTS == ret) {
136 return 0;
137 }
138
139 stmt->row_count = DBCOUNT(H->link);
140 stmt->column_count = dbnumcols(H->link);
141
142 return 1;
143 }
144
pdo_dblib_stmt_next_rowset(pdo_stmt_t * stmt)145 static int pdo_dblib_stmt_next_rowset(pdo_stmt_t *stmt)
146 {
147 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
148 pdo_dblib_db_handle *H = S->H;
149 RETCODE ret = SUCCESS;
150
151 /* Ideally use dbcanquery here, but there is a bug in FreeTDS's implementation of dbcanquery
152 * It has been resolved but is currently only available in nightly builds
153 */
154 while (NO_MORE_ROWS != ret) {
155 ret = dbnextrow(H->link);
156
157 if (FAIL == ret) {
158 pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbnextrow() returned FAIL");
159 return 0;
160 }
161 }
162
163 return pdo_dblib_stmt_next_rowset_no_cancel(stmt);
164 }
165
pdo_dblib_stmt_execute(pdo_stmt_t * stmt)166 static int pdo_dblib_stmt_execute(pdo_stmt_t *stmt)
167 {
168 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
169 pdo_dblib_db_handle *H = S->H;
170 RETCODE ret;
171
172 dbsetuserdata(H->link, (BYTE*) &S->err);
173
174 pdo_dblib_stmt_cursor_closer(stmt);
175
176 if (FAIL == dbcmd(H->link, stmt->active_query_string)) {
177 return 0;
178 }
179
180 if (FAIL == dbsqlexec(H->link)) {
181 return 0;
182 }
183
184 ret = pdo_dblib_stmt_next_rowset_no_cancel(stmt);
185
186 stmt->row_count = DBCOUNT(H->link);
187 stmt->column_count = dbnumcols(H->link);
188
189 return 1;
190 }
191
pdo_dblib_stmt_fetch(pdo_stmt_t * stmt,enum pdo_fetch_orientation ori,zend_long offset)192 static int pdo_dblib_stmt_fetch(pdo_stmt_t *stmt,
193 enum pdo_fetch_orientation ori, zend_long offset)
194 {
195
196 RETCODE ret;
197
198 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
199 pdo_dblib_db_handle *H = S->H;
200
201 ret = dbnextrow(H->link);
202
203 if (FAIL == ret) {
204 pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbnextrow() returned FAIL");
205 return 0;
206 }
207
208 if(NO_MORE_ROWS == ret) {
209 return 0;
210 }
211
212 return 1;
213 }
214
pdo_dblib_stmt_describe(pdo_stmt_t * stmt,int colno)215 static int pdo_dblib_stmt_describe(pdo_stmt_t *stmt, int colno)
216 {
217 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
218 pdo_dblib_db_handle *H = S->H;
219 struct pdo_column_data *col;
220 char *fname;
221
222 if(colno >= stmt->column_count || colno < 0) {
223 return FAILURE;
224 }
225
226 if (colno == 0) {
227 S->computed_column_name_count = 0;
228 }
229
230 col = &stmt->columns[colno];
231 fname = (char*)dbcolname(H->link, colno+1);
232
233 if (fname && *fname) {
234 col->name = zend_string_init(fname, strlen(fname), 0);
235 } else {
236 if (S->computed_column_name_count > 0) {
237 char buf[16];
238 int len;
239
240 len = snprintf(buf, sizeof(buf), "computed%d", S->computed_column_name_count);
241 col->name = zend_string_init(buf, len, 0);
242 } else {
243 col->name = zend_string_init("computed", strlen("computed"), 0);
244 }
245
246 S->computed_column_name_count++;
247 }
248
249 col->maxlen = dbcollen(H->link, colno+1);
250 col->param_type = PDO_PARAM_ZVAL;
251
252 return 1;
253 }
254
pdo_dblib_stmt_get_col(pdo_stmt_t * stmt,int colno,char ** ptr,zend_ulong * len,int * caller_frees)255 static int pdo_dblib_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr,
256 zend_ulong *len, int *caller_frees)
257 {
258
259 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
260 pdo_dblib_db_handle *H = S->H;
261
262 int coltype;
263 char *data, *tmp_data;
264 unsigned int data_len, tmp_data_len;
265 zval *zv = NULL;
266
267 coltype = dbcoltype(H->link, colno+1);
268 data = dbdata(H->link, colno+1);
269 data_len = dbdatlen(H->link, colno+1);
270
271 if (data_len != 0 || data != NULL) {
272 if (stmt->dbh->stringify) {
273 switch (coltype) {
274 case SQLDECIMAL:
275 case SQLNUMERIC:
276 case SQLMONEY:
277 case SQLMONEY4:
278 case SQLMONEYN:
279 case SQLFLT4:
280 case SQLFLT8:
281 case SQLINT4:
282 case SQLINT2:
283 case SQLINT1:
284 case SQLBIT: {
285 if (dbwillconvert(coltype, SQLCHAR)) {
286 tmp_data_len = 32 + (2 * (data_len)); /* FIXME: We allocate more than we need here */
287 tmp_data = emalloc(tmp_data_len);
288 data_len = dbconvert(NULL, coltype, data, data_len, SQLCHAR, tmp_data, -1);
289
290 zv = emalloc(sizeof(zval));
291 ZVAL_STRING(zv, tmp_data);
292
293 efree(tmp_data);
294 }
295 break;
296 }
297 }
298 }
299
300 if (!zv) {
301 switch (coltype) {
302 case SQLCHAR:
303 case SQLVARCHAR:
304 case SQLTEXT: {
305 #if ilia_0
306 while (data_len>0 && data[data_len-1] == ' ') { /* nuke trailing whitespace */
307 data_len--;
308 }
309 #endif
310 }
311 case SQLVARBINARY:
312 case SQLBINARY:
313 case SQLIMAGE: {
314 zv = emalloc(sizeof(zval));
315 ZVAL_STRINGL(zv, data, data_len);
316
317 break;
318 }
319 case SQLDATETIME:
320 case SQLDATETIM4: {
321 int dl;
322 DBDATEREC di;
323 DBDATEREC dt;
324
325 dbconvert(H->link, coltype, data, -1, SQLDATETIME, (LPBYTE) &dt, -1);
326 dbdatecrack(H->link, &di, (DBDATETIME *) &dt);
327
328 dl = spprintf(&tmp_data, 20, "%d-%02d-%02d %02d:%02d:%02d",
329 #if defined(PHP_DBLIB_IS_MSSQL) || defined(MSDBLIB)
330 di.year, di.month, di.day, di.hour, di.minute, di.second
331 #else
332 di.dateyear, di.datemonth+1, di.datedmonth, di.datehour, di.dateminute, di.datesecond
333 #endif
334 );
335
336 zv = emalloc(sizeof(zval));
337 ZVAL_STRINGL(zv, tmp_data, dl);
338
339 efree(tmp_data);
340
341 break;
342 }
343 case SQLFLT4: {
344 zv = emalloc(sizeof(zval));
345 ZVAL_DOUBLE(zv, (double) (*(DBFLT4 *) data));
346
347 break;
348 }
349 case SQLFLT8: {
350 zv = emalloc(sizeof(zval));
351 ZVAL_DOUBLE(zv, (double) (*(DBFLT8 *) data));
352
353 break;
354 }
355 case SQLINT4: {
356 zv = emalloc(sizeof(zval));
357 ZVAL_LONG(zv, (long) ((int) *(DBINT *) data));
358
359 break;
360 }
361 case SQLINT2: {
362 zv = emalloc(sizeof(zval));
363 ZVAL_LONG(zv, (long) ((int) *(DBSMALLINT *) data));
364
365 break;
366 }
367 case SQLINT1:
368 case SQLBIT: {
369 zv = emalloc(sizeof(zval));
370 ZVAL_LONG(zv, (long) ((int) *(DBTINYINT *) data));
371
372 break;
373 }
374 case SQLDECIMAL:
375 case SQLNUMERIC:
376 case SQLMONEY:
377 case SQLMONEY4:
378 case SQLMONEYN: {
379 DBFLT8 float_value;
380 dbconvert(NULL, coltype, data, 8, SQLFLT8, (LPBYTE)&float_value, -1);
381
382 zv = emalloc(sizeof(zval));
383 ZVAL_DOUBLE(zv, float_value);
384
385 break;
386 }
387
388 #ifdef SQLUNIQUE
389 case SQLUNIQUE: {
390 #else
391 case 36: { /* FreeTDS hack */
392 #endif
393 if (H->stringify_uniqueidentifier) { // 36-char hex string representation
394 tmp_data_len = 36;
395 tmp_data = safe_emalloc(tmp_data_len, sizeof(char), 1);
396 data_len = (unsigned int) dbconvert(NULL, SQLUNIQUE, (BYTE*)data, data_len, SQLCHAR, (BYTE*)tmp_data, tmp_data_len);
397 php_strtoupper(tmp_data, data_len);
398 zv = emalloc(sizeof(zval));
399 ZVAL_STRINGL(zv, tmp_data, data_len);
400 efree(tmp_data);
401
402 } else { // a 16-byte binary representation
403 zv = emalloc(sizeof(zval));
404 ZVAL_STRINGL(zv, data, 16);
405 }
406 break;
407 }
408
409 default: {
410 if (dbwillconvert(coltype, SQLCHAR)) {
411 tmp_data_len = 32 + (2 * (data_len)); /* FIXME: We allocate more than we need here */
412 tmp_data = emalloc(tmp_data_len);
413 data_len = dbconvert(NULL, coltype, data, data_len, SQLCHAR, tmp_data, -1);
414
415 zv = emalloc(sizeof(zval));
416 ZVAL_STRING(zv, tmp_data);
417
418 efree(tmp_data);
419 }
420
421 break;
422 }
423 }
424 }
425 }
426
427 if (zv != NULL) {
428 *ptr = (char*)zv;
429 *len = sizeof(zval);
430 } else {
431 *ptr = NULL;
432 *len = 0;
433 }
434
435 *caller_frees = 1;
436
437 return 1;
438 }
439
440 static int pdo_dblib_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_data *param,
441 enum pdo_param_event event_type)
442 {
443 return 1;
444 }
445
446 static int pdo_dblib_stmt_get_column_meta(pdo_stmt_t *stmt, zend_long colno, zval *return_value)
447 {
448 pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
449 pdo_dblib_db_handle *H = S->H;
450 DBTYPEINFO* dbtypeinfo;
451 int coltype;
452
453 if(colno >= stmt->column_count || colno < 0) {
454 return FAILURE;
455 }
456
457 array_init(return_value);
458
459 dbtypeinfo = dbcoltypeinfo(H->link, colno+1);
460
461 if(!dbtypeinfo) return FAILURE;
462
463 coltype = dbcoltype(H->link, colno+1);
464
465 add_assoc_long(return_value, "max_length", dbcollen(H->link, colno+1) );
466 add_assoc_long(return_value, "precision", (int) dbtypeinfo->precision );
467 add_assoc_long(return_value, "scale", (int) dbtypeinfo->scale );
468 add_assoc_string(return_value, "column_source", dbcolsource(H->link, colno+1));
469 add_assoc_string(return_value, "native_type", pdo_dblib_get_field_name(coltype));
470 add_assoc_long(return_value, "native_type_id", coltype);
471 add_assoc_long(return_value, "native_usertype_id", dbcolutype(H->link, colno+1));
472
473 switch (coltype) {
474 case SQLBIT:
475 case SQLINT1:
476 case SQLINT2:
477 case SQLINT4:
478 add_assoc_long(return_value, "pdo_type", PDO_PARAM_INT);
479 break;
480 default:
481 add_assoc_long(return_value, "pdo_type", PDO_PARAM_STR);
482 break;
483 }
484
485 return 1;
486 }
487
488
489 struct pdo_stmt_methods dblib_stmt_methods = {
490 pdo_dblib_stmt_dtor,
491 pdo_dblib_stmt_execute,
492 pdo_dblib_stmt_fetch,
493 pdo_dblib_stmt_describe,
494 pdo_dblib_stmt_get_col,
495 pdo_dblib_stmt_param_hook,
496 NULL, /* set attr */
497 NULL, /* get attr */
498 pdo_dblib_stmt_get_column_meta, /* meta */
499 pdo_dblib_stmt_next_rowset, /* nextrow */
500 pdo_dblib_stmt_cursor_closer
501 };
502
