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1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2012 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: | Authors: Edin Kadribasic <edink@emini.dk> |
16: | Ilia Alshanestsky <ilia@prohost.org> |
17: | Wez Furlong <wez@php.net> |
18: +----------------------------------------------------------------------+
19: */
20:
1.1.1.2 ! misho 21: /* $Id$ */
1.1 misho 22:
23: #ifdef HAVE_CONFIG_H
24: #include "config.h"
25: #endif
26:
27: #include "php.h"
28: #include "php_ini.h"
29: #include "ext/standard/info.h"
30: #include "pdo/php_pdo.h"
31: #include "pdo/php_pdo_driver.h"
32: #include "php_pdo_pgsql.h"
33: #include "php_pdo_pgsql_int.h"
34: #if HAVE_NETINET_IN_H
35: #include <netinet/in.h>
36: #endif
37:
38: /* from postgresql/src/include/catalog/pg_type.h */
39: #define BOOLOID 16
40: #define BYTEAOID 17
41: #define INT8OID 20
42: #define INT2OID 21
43: #define INT4OID 23
44: #define TEXTOID 25
45: #define OIDOID 26
46:
47: static int pgsql_stmt_dtor(pdo_stmt_t *stmt TSRMLS_DC)
48: {
49: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
50:
51: if (S->result) {
52: /* free the resource */
53: PQclear(S->result);
54: S->result = NULL;
55: }
56:
57: #if HAVE_PQPREPARE
58: if (S->stmt_name) {
59: pdo_pgsql_db_handle *H = S->H;
60: char *q = NULL;
61: PGresult *res;
62:
63: if (S->is_prepared) {
64: spprintf(&q, 0, "DEALLOCATE %s", S->stmt_name);
65: res = PQexec(H->server, q);
66: efree(q);
67: if (res) {
68: PQclear(res);
69: }
70: }
71: efree(S->stmt_name);
72: S->stmt_name = NULL;
73: }
74: if (S->param_lengths) {
75: efree(S->param_lengths);
76: S->param_lengths = NULL;
77: }
78: if (S->param_values) {
79: efree(S->param_values);
80: S->param_values = NULL;
81: }
82: if (S->param_formats) {
83: efree(S->param_formats);
84: S->param_formats = NULL;
85: }
86: if (S->param_types) {
87: efree(S->param_types);
88: S->param_types = NULL;
89: }
90: if (S->query) {
91: efree(S->query);
92: S->query = NULL;
93: }
94: #endif
95:
96: if (S->cursor_name) {
97: pdo_pgsql_db_handle *H = S->H;
98: char *q = NULL;
99: PGresult *res;
100:
101: spprintf(&q, 0, "CLOSE %s", S->cursor_name);
102: res = PQexec(H->server, q);
103: efree(q);
104: if (res) PQclear(res);
105: efree(S->cursor_name);
106: S->cursor_name = NULL;
107: }
108:
109: if(S->cols) {
110: efree(S->cols);
111: S->cols = NULL;
112: }
113: efree(S);
114: stmt->driver_data = NULL;
115: return 1;
116: }
117:
118: static int pgsql_stmt_execute(pdo_stmt_t *stmt TSRMLS_DC)
119: {
120: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
121: pdo_pgsql_db_handle *H = S->H;
122: ExecStatusType status;
123:
124: /* ensure that we free any previous unfetched results */
125: if(S->result) {
126: PQclear(S->result);
127: S->result = NULL;
128: }
129:
130: S->current_row = 0;
131:
132: if (S->cursor_name) {
133: char *q = NULL;
134:
135: if (S->is_prepared) {
136: spprintf(&q, 0, "CLOSE %s", S->cursor_name);
137: S->result = PQexec(H->server, q);
138: efree(q);
139: }
140:
141: spprintf(&q, 0, "DECLARE %s SCROLL CURSOR WITH HOLD FOR %s", S->cursor_name, stmt->active_query_string);
142: S->result = PQexec(H->server, q);
143: efree(q);
144:
145: /* check if declare failed */
146: status = PQresultStatus(S->result);
147: if (status != PGRES_COMMAND_OK && status != PGRES_TUPLES_OK) {
148: pdo_pgsql_error_stmt(stmt, status, pdo_pgsql_sqlstate(S->result));
149: return 0;
150: }
151:
152: /* the cursor was declared correctly */
153: S->is_prepared = 1;
154:
155: /* fetch to be able to get the number of tuples later, but don't advance the cursor pointer */
156: spprintf(&q, 0, "FETCH FORWARD 0 FROM %s", S->cursor_name);
157: S->result = PQexec(H->server, q);
158: efree(q);
159: } else
160: #if HAVE_PQPREPARE
161: if (S->stmt_name) {
162: /* using a prepared statement */
163:
164: if (!S->is_prepared) {
165: stmt_retry:
166: /* we deferred the prepare until now, because we didn't
167: * know anything about the parameter types; now we do */
168: S->result = PQprepare(H->server, S->stmt_name, S->query,
169: stmt->bound_params ? zend_hash_num_elements(stmt->bound_params) : 0,
170: S->param_types);
171: status = PQresultStatus(S->result);
172: switch (status) {
173: case PGRES_COMMAND_OK:
174: case PGRES_TUPLES_OK:
175: /* it worked */
176: S->is_prepared = 1;
177: PQclear(S->result);
178: break;
179: default: {
180: char *sqlstate = pdo_pgsql_sqlstate(S->result);
181: /* 42P05 means that the prepared statement already existed. this can happen if you use
182: * a connection pooling software line pgpool which doesn't close the db-connection once
183: * php disconnects. if php dies (no chance to run RSHUTDOWN) during execution it has no
184: * chance to DEALLOCATE the prepared statements it has created. so, if we hit a 42P05 we
185: * deallocate it and retry ONCE (thies 2005.12.15)
186: */
187: if (sqlstate && !strcmp(sqlstate, "42P05")) {
188: char buf[100]; /* stmt_name == "pdo_crsr_%08x" */
189: PGresult *res;
190: snprintf(buf, sizeof(buf), "DEALLOCATE %s", S->stmt_name);
191: res = PQexec(H->server, buf);
192: if (res) {
193: PQclear(res);
194: }
195: goto stmt_retry;
196: } else {
197: pdo_pgsql_error_stmt(stmt, status, sqlstate);
198: return 0;
199: }
200: }
201: }
202: }
203: S->result = PQexecPrepared(H->server, S->stmt_name,
204: stmt->bound_params ?
205: zend_hash_num_elements(stmt->bound_params) :
206: 0,
207: (const char**)S->param_values,
208: S->param_lengths,
209: S->param_formats,
210: 0);
211: } else
212: #endif
213: {
214: S->result = PQexec(H->server, stmt->active_query_string);
215: }
216: status = PQresultStatus(S->result);
217:
218: if (status != PGRES_COMMAND_OK && status != PGRES_TUPLES_OK) {
219: pdo_pgsql_error_stmt(stmt, status, pdo_pgsql_sqlstate(S->result));
220: return 0;
221: }
222:
223: if (!stmt->executed && !stmt->column_count) {
224: stmt->column_count = (int) PQnfields(S->result);
225: S->cols = ecalloc(stmt->column_count, sizeof(pdo_pgsql_column));
226: }
227:
228: if (status == PGRES_COMMAND_OK) {
229: stmt->row_count = (long)atoi(PQcmdTuples(S->result));
230: H->pgoid = PQoidValue(S->result);
231: } else {
232: stmt->row_count = (long)PQntuples(S->result);
233: }
234:
235: return 1;
236: }
237:
238: static int pgsql_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_data *param,
239: enum pdo_param_event event_type TSRMLS_DC)
240: {
241: #if HAVE_PQPREPARE
242: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
243:
244: if (S->stmt_name && param->is_param) {
245: switch (event_type) {
246: case PDO_PARAM_EVT_FREE:
247: if (param->driver_data) {
248: efree(param->driver_data);
249: }
250: break;
251:
252: case PDO_PARAM_EVT_NORMALIZE:
253: /* decode name from $1, $2 into 0, 1 etc. */
254: if (param->name) {
255: if (param->name[0] == '$') {
256: param->paramno = atoi(param->name + 1);
257: } else {
258: /* resolve parameter name to rewritten name */
259: char *nameptr;
260: if (stmt->bound_param_map && SUCCESS == zend_hash_find(stmt->bound_param_map,
261: param->name, param->namelen + 1, (void**)&nameptr)) {
262: param->paramno = atoi(nameptr + 1) - 1;
263: } else {
264: pdo_raise_impl_error(stmt->dbh, stmt, "HY093", param->name TSRMLS_CC);
265: return 0;
266: }
267: }
268: }
269: break;
270:
271: case PDO_PARAM_EVT_ALLOC:
272: case PDO_PARAM_EVT_EXEC_POST:
273: case PDO_PARAM_EVT_FETCH_PRE:
274: case PDO_PARAM_EVT_FETCH_POST:
275: /* work is handled by EVT_NORMALIZE */
276: return 1;
277:
278: case PDO_PARAM_EVT_EXEC_PRE:
279: if (!stmt->bound_param_map) {
280: return 0;
281: }
282: if (!S->param_values) {
283: S->param_values = ecalloc(
284: zend_hash_num_elements(stmt->bound_param_map),
285: sizeof(char*));
286: S->param_lengths = ecalloc(
287: zend_hash_num_elements(stmt->bound_param_map),
288: sizeof(int));
289: S->param_formats = ecalloc(
290: zend_hash_num_elements(stmt->bound_param_map),
291: sizeof(int));
292: S->param_types = ecalloc(
293: zend_hash_num_elements(stmt->bound_param_map),
294: sizeof(Oid));
295: }
296: if (param->paramno >= 0) {
297: if (param->paramno > zend_hash_num_elements(stmt->bound_param_map)) {
298: pdo_pgsql_error_stmt(stmt, PGRES_FATAL_ERROR, "HY105");
299: return 0;
300: }
301:
302: if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_LOB &&
303: Z_TYPE_P(param->parameter) == IS_RESOURCE) {
304: php_stream *stm;
305: php_stream_from_zval_no_verify(stm, ¶m->parameter);
306: if (stm) {
307: if (php_stream_is(stm, &pdo_pgsql_lob_stream_ops)) {
308: struct pdo_pgsql_lob_self *self = (struct pdo_pgsql_lob_self*)stm->abstract;
309: pdo_pgsql_bound_param *P = param->driver_data;
310:
311: if (P == NULL) {
312: P = ecalloc(1, sizeof(*P));
313: param->driver_data = P;
314: }
315: P->oid = htonl(self->oid);
316: S->param_values[param->paramno] = (char*)&P->oid;
317: S->param_lengths[param->paramno] = sizeof(P->oid);
318: S->param_formats[param->paramno] = 1;
319: S->param_types[param->paramno] = OIDOID;
320: return 1;
321: } else {
322: int len;
323:
324: SEPARATE_ZVAL_IF_NOT_REF(¶m->parameter);
325: Z_TYPE_P(param->parameter) = IS_STRING;
326:
327: if ((len = php_stream_copy_to_mem(stm, &Z_STRVAL_P(param->parameter), PHP_STREAM_COPY_ALL, 0)) > 0) {
328: Z_STRLEN_P(param->parameter) = len;
329: } else {
330: ZVAL_EMPTY_STRING(param->parameter);
331: }
332: }
333: } else {
334: /* expected a stream resource */
335: pdo_pgsql_error_stmt(stmt, PGRES_FATAL_ERROR, "HY105");
336: return 0;
337: }
338: }
339:
340: if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_NULL ||
341: Z_TYPE_P(param->parameter) == IS_NULL) {
342: S->param_values[param->paramno] = NULL;
343: S->param_lengths[param->paramno] = 0;
344: } else if (Z_TYPE_P(param->parameter) == IS_BOOL) {
345: S->param_values[param->paramno] = Z_BVAL_P(param->parameter) ? "t" : "f";
346: S->param_lengths[param->paramno] = 1;
347: S->param_formats[param->paramno] = 0;
348: } else {
349: SEPARATE_ZVAL_IF_NOT_REF(¶m->parameter);
350: convert_to_string(param->parameter);
351: S->param_values[param->paramno] = Z_STRVAL_P(param->parameter);
352: S->param_lengths[param->paramno] = Z_STRLEN_P(param->parameter);
353: S->param_formats[param->paramno] = 0;
354: }
355:
356: if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_LOB) {
357: S->param_types[param->paramno] = 0;
358: S->param_formats[param->paramno] = 1;
359: } else {
360: S->param_types[param->paramno] = 0;
361: }
362: }
363: break;
364: }
365: }
366: #endif
367: return 1;
368: }
369:
370: static int pgsql_stmt_fetch(pdo_stmt_t *stmt,
371: enum pdo_fetch_orientation ori, long offset TSRMLS_DC)
372: {
373: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
374:
375: if (S->cursor_name) {
376: char *ori_str = NULL;
377: char *q = NULL;
378: ExecStatusType status;
379:
380: switch (ori) {
381: case PDO_FETCH_ORI_NEXT: spprintf(&ori_str, 0, "NEXT"); break;
382: case PDO_FETCH_ORI_PRIOR: spprintf(&ori_str, 0, "BACKWARD"); break;
383: case PDO_FETCH_ORI_FIRST: spprintf(&ori_str, 0, "FIRST"); break;
384: case PDO_FETCH_ORI_LAST: spprintf(&ori_str, 0, "LAST"); break;
385: case PDO_FETCH_ORI_ABS: spprintf(&ori_str, 0, "ABSOLUTE %ld", offset); break;
386: case PDO_FETCH_ORI_REL: spprintf(&ori_str, 0, "RELATIVE %ld", offset); break;
387: default:
388: return 0;
389: }
390:
391: spprintf(&q, 0, "FETCH %s FROM %s", ori_str, S->cursor_name);
392: efree(ori_str);
393: S->result = PQexec(S->H->server, q);
394: efree(q);
395: status = PQresultStatus(S->result);
396:
397: if (status != PGRES_COMMAND_OK && status != PGRES_TUPLES_OK) {
398: pdo_pgsql_error_stmt(stmt, status, pdo_pgsql_sqlstate(S->result));
399: return 0;
400: }
401:
402: if (PQntuples(S->result)) {
403: S->current_row = 1;
404: return 1;
405: } else {
406: return 0;
407: }
408: } else {
409: if (S->current_row < stmt->row_count) {
410: S->current_row++;
411: return 1;
412: } else {
413: return 0;
414: }
415: }
416: }
417:
418: static int pgsql_stmt_describe(pdo_stmt_t *stmt, int colno TSRMLS_DC)
419: {
420: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
421: struct pdo_column_data *cols = stmt->columns;
422: struct pdo_bound_param_data *param;
423:
424: if (!S->result) {
425: return 0;
426: }
427:
428: cols[colno].name = estrdup(PQfname(S->result, colno));
429: cols[colno].namelen = strlen(cols[colno].name);
430: cols[colno].maxlen = PQfsize(S->result, colno);
431: cols[colno].precision = PQfmod(S->result, colno);
432: S->cols[colno].pgsql_type = PQftype(S->result, colno);
433:
434: switch(S->cols[colno].pgsql_type) {
435:
436: case BOOLOID:
437: cols[colno].param_type = PDO_PARAM_BOOL;
438: break;
439:
440: case OIDOID:
441: /* did the user bind the column as a LOB ? */
442: if (stmt->bound_columns && (
443: SUCCESS == zend_hash_index_find(stmt->bound_columns,
444: colno, (void**)¶m) ||
445: SUCCESS == zend_hash_find(stmt->bound_columns,
446: cols[colno].name, cols[colno].namelen,
447: (void**)¶m))) {
448: if (PDO_PARAM_TYPE(param->param_type) == PDO_PARAM_LOB) {
449: cols[colno].param_type = PDO_PARAM_LOB;
450: break;
451: }
452: }
453: cols[colno].param_type = PDO_PARAM_INT;
454: break;
455:
456: case INT2OID:
457: case INT4OID:
458: cols[colno].param_type = PDO_PARAM_INT;
459: break;
460:
461: case INT8OID:
462: if (sizeof(long)>=8) {
463: cols[colno].param_type = PDO_PARAM_INT;
464: } else {
465: cols[colno].param_type = PDO_PARAM_STR;
466: }
467: break;
468:
469: case BYTEAOID:
470: cols[colno].param_type = PDO_PARAM_LOB;
471: break;
472:
473: default:
474: cols[colno].param_type = PDO_PARAM_STR;
475: }
476:
477: return 1;
478: }
479:
480: static int pgsql_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr, unsigned long *len, int *caller_frees TSRMLS_DC)
481: {
482: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
483: struct pdo_column_data *cols = stmt->columns;
484: size_t tmp_len;
485:
486: if (!S->result) {
487: return 0;
488: }
489:
490: /* We have already increased count by 1 in pgsql_stmt_fetch() */
491: if (PQgetisnull(S->result, S->current_row - 1, colno)) { /* Check if we got NULL */
492: *ptr = NULL;
493: *len = 0;
494: } else {
495: *ptr = PQgetvalue(S->result, S->current_row - 1, colno);
496: *len = PQgetlength(S->result, S->current_row - 1, colno);
497:
498: switch(cols[colno].param_type) {
499:
500: case PDO_PARAM_INT:
501: S->cols[colno].intval = atol(*ptr);
502: *ptr = (char *) &(S->cols[colno].intval);
503: *len = sizeof(long);
504: break;
505:
506: case PDO_PARAM_BOOL:
507: S->cols[colno].boolval = **ptr == 't' ? 1: 0;
508: *ptr = (char *) &(S->cols[colno].boolval);
509: *len = sizeof(zend_bool);
510: break;
511:
512: case PDO_PARAM_LOB:
513: if (S->cols[colno].pgsql_type == OIDOID) {
514: /* ooo, a real large object */
515: char *end_ptr;
516: Oid oid = (Oid)strtoul(*ptr, &end_ptr, 10);
517: int loid = lo_open(S->H->server, oid, INV_READ);
518: if (loid >= 0) {
519: *ptr = (char*)pdo_pgsql_create_lob_stream(stmt->dbh, loid, oid TSRMLS_CC);
520: *len = 0;
521: return *ptr ? 1 : 0;
522: }
523: *ptr = NULL;
524: *len = 0;
525: return 0;
526: } else {
527: char *tmp_ptr = PQunescapeBytea(*ptr, &tmp_len);
528: if (!tmp_ptr) {
529: /* PQunescapeBytea returned an error */
530: *len = 0;
531: return 0;
532: }
533: if (!tmp_len) {
534: /* Empty string, return as empty stream */
535: *ptr = (char *)php_stream_memory_open(TEMP_STREAM_READONLY, "", 0);
536: PQfreemem(tmp_ptr);
537: *len = 0;
538: } else {
539: *ptr = estrndup(tmp_ptr, tmp_len);
540: PQfreemem(tmp_ptr);
541: *len = tmp_len;
542: *caller_frees = 1;
543: }
544: }
545: break;
546: case PDO_PARAM_NULL:
547: case PDO_PARAM_STR:
548: case PDO_PARAM_STMT:
549: case PDO_PARAM_INPUT_OUTPUT:
550: case PDO_PARAM_ZVAL:
551: default:
552: break;
553: }
554: }
555:
556: return 1;
557: }
558:
559: static int pgsql_stmt_get_column_meta(pdo_stmt_t *stmt, long colno, zval *return_value TSRMLS_DC)
560: {
561: pdo_pgsql_stmt *S = (pdo_pgsql_stmt*)stmt->driver_data;
562: PGresult *res;
563: char *q=NULL;
564: ExecStatusType status;
565:
566: if (!S->result) {
567: return FAILURE;
568: }
569:
570: if (colno >= stmt->column_count) {
571: return FAILURE;
572: }
573:
574: array_init(return_value);
575: add_assoc_long(return_value, "pgsql:oid", S->cols[colno].pgsql_type);
576:
577: /* Fetch metadata from Postgres system catalogue */
578: spprintf(&q, 0, "SELECT TYPNAME FROM PG_TYPE WHERE OID=%d", S->cols[colno].pgsql_type);
579: res = PQexec(S->H->server, q);
580: efree(q);
581:
582: status = PQresultStatus(res);
583:
584: if (status != PGRES_TUPLES_OK) {
585: /* Failed to get system catalogue, but return success
586: * with the data we have collected so far
587: */
588: goto done;
589: }
590:
591: /* We want exactly one row returned */
592: if (1 != PQntuples(res)) {
593: goto done;
594: }
595:
596: add_assoc_string(return_value, "native_type", PQgetvalue(res, 0, 0), 1);
597: done:
598: PQclear(res);
599: return 1;
600: }
601:
602: static int pdo_pgsql_stmt_cursor_closer(pdo_stmt_t *stmt TSRMLS_DC)
603: {
604: return 1;
605: }
606:
607: struct pdo_stmt_methods pgsql_stmt_methods = {
608: pgsql_stmt_dtor,
609: pgsql_stmt_execute,
610: pgsql_stmt_fetch,
611: pgsql_stmt_describe,
612: pgsql_stmt_get_col,
613: pgsql_stmt_param_hook,
614: NULL, /* set_attr */
615: NULL, /* get_attr */
616: pgsql_stmt_get_column_meta,
617: NULL, /* next_rowset */
618: pdo_pgsql_stmt_cursor_closer
619: };
620:
621: /*
622: * Local variables:
623: * tab-width: 4
624: * c-basic-offset: 4
625: * End:
626: * vim600: noet sw=4 ts=4 fdm=marker
627: * vim<600: noet sw=4 ts=4
628: */