1/*
2  +----------------------------------------------------------------------+
3  | PHP Version 5                                                        |
4  +----------------------------------------------------------------------+
5  | Copyright (c) 1997-2016 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 */
42static 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
98static int pdo_dblib_stmt_cursor_closer(pdo_stmt_t *stmt TSRMLS_DC)
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    efree(stmt->columns);
107    stmt->columns = NULL;
108
109    return 1;
110}
111
112static int pdo_dblib_stmt_dtor(pdo_stmt_t *stmt TSRMLS_DC)
113{
114    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
115
116    efree(stmt->columns);
117    stmt->columns = NULL;
118
119    efree(S);
120
121    return 1;
122}
123
124static int pdo_dblib_stmt_next_rowset(pdo_stmt_t *stmt TSRMLS_DC)
125{
126    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
127    pdo_dblib_db_handle *H = S->H;
128    RETCODE ret;
129
130    ret = dbresults(H->link);
131
132    if (FAIL == ret) {
133        pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbresults() returned FAIL" TSRMLS_CC);
134        return 0;
135    }
136
137    if(NO_MORE_RESULTS == ret) {
138        return 0;
139    }
140
141    stmt->row_count = DBCOUNT(H->link);
142    stmt->column_count = dbnumcols(H->link);
143
144    return 1;
145}
146
147static int pdo_dblib_stmt_execute(pdo_stmt_t *stmt TSRMLS_DC)
148{
149    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
150    pdo_dblib_db_handle *H = S->H;
151    RETCODE ret;
152
153    dbsetuserdata(H->link, (BYTE*) &S->err);
154
155    pdo_dblib_stmt_cursor_closer(stmt TSRMLS_CC);
156
157    if (FAIL == dbcmd(H->link, stmt->active_query_string)) {
158        return 0;
159    }
160
161    if (FAIL == dbsqlexec(H->link)) {
162        return 0;
163    }
164
165    ret = pdo_dblib_stmt_next_rowset(stmt TSRMLS_CC);
166
167    stmt->row_count = DBCOUNT(H->link);
168    stmt->column_count = dbnumcols(H->link);
169
170    return 1;
171}
172
173static int pdo_dblib_stmt_fetch(pdo_stmt_t *stmt,
174    enum pdo_fetch_orientation ori, long offset TSRMLS_DC)
175{
176
177    RETCODE ret;
178
179    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
180    pdo_dblib_db_handle *H = S->H;
181
182    ret = dbnextrow(H->link);
183
184    if (FAIL == ret) {
185        pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbnextrow() returned FAIL" TSRMLS_CC);
186        return 0;
187    }
188
189    if(NO_MORE_ROWS == ret) {
190        return 0;
191    }
192
193    return 1;
194}
195
196static int pdo_dblib_stmt_describe(pdo_stmt_t *stmt, int colno TSRMLS_DC)
197{
198    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
199    pdo_dblib_db_handle *H = S->H;
200    struct pdo_column_data *col;
201    char *fname;
202
203    if(colno >= stmt->column_count || colno < 0)  {
204        return FAILURE;
205    }
206
207    col = &stmt->columns[colno];
208    fname = (char*)dbcolname(H->link, colno+1);
209
210    if (fname && *fname) {
211        col->name = estrdup(fname);
212        col->namelen = strlen(col->name);
213    } else {
214        col->namelen = spprintf(&col->name, NULL, "computed%d", colno);
215    }
216    col->maxlen = dbcollen(H->link, colno+1);
217    col->param_type = PDO_PARAM_STR;
218
219    return 1;
220}
221
222static int pdo_dblib_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr,
223     unsigned long *len, int *caller_frees TSRMLS_DC)
224{
225
226    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
227    pdo_dblib_db_handle *H = S->H;
228
229    int coltype;
230    unsigned int tmp_len;
231    char *tmp_ptr = NULL;
232
233    coltype = dbcoltype(H->link, colno+1);
234
235    *len = dbdatlen(H->link, colno+1);
236    *ptr = dbdata(H->link, colno+1);
237
238    if (*len == 0 && *ptr == NULL) {
239        return 1;
240    }
241
242    switch (coltype) {
243        case SQLVARBINARY:
244        case SQLBINARY:
245        case SQLIMAGE:
246        case SQLTEXT:
247            /* FIXME: Above types should be returned as a stream as they can be VERY large */
248        case SQLCHAR:
249        case SQLVARCHAR:
250            tmp_ptr = emalloc(*len + 1);
251            memcpy(tmp_ptr, *ptr, *len);
252            tmp_ptr[*len] = '\0';
253            *ptr = tmp_ptr;
254            break;
255        case SQLMONEY:
256        case SQLMONEY4:
257        case SQLMONEYN: {
258            DBFLT8 money_value;
259            dbconvert(NULL, coltype, *ptr, *len, SQLFLT8, (LPBYTE)&money_value, 8);
260            *len = spprintf(&tmp_ptr, 0, "%.4f", money_value);
261            *ptr = tmp_ptr;
262            break;
263        }
264        case SQLUNIQUE: {
265            *len = 36+1;
266            tmp_ptr = emalloc(*len + 1);
267
268            /* uniqueidentifier is a 16-byte binary number, convert to 32 char hex string */
269            *len = dbconvert(NULL, SQLUNIQUE, *ptr, *len, SQLCHAR, tmp_ptr, *len);
270            php_strtoupper(tmp_ptr, *len);
271            *ptr = tmp_ptr;
272            break;
273        }
274        default:
275            if (dbwillconvert(coltype, SQLCHAR)) {
276                tmp_len = 32 + (2 * (*len)); /* FIXME: We allocate more than we need here */
277                tmp_ptr = emalloc(tmp_len);
278                *len = dbconvert(NULL, coltype, *ptr, *len, SQLCHAR, tmp_ptr, -1);
279                *ptr = tmp_ptr;
280            } else {
281                *len = 0; /* FIXME: Silently fails and returns null on conversion errors */
282                *ptr = NULL;
283            }
284    }
285
286    *caller_frees = 1;
287
288    return 1;
289}
290
291static int pdo_dblib_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_data *param,
292        enum pdo_param_event event_type TSRMLS_DC)
293{
294    return 1;
295}
296
297static int pdo_dblib_stmt_get_column_meta(pdo_stmt_t *stmt, long colno, zval *return_value TSRMLS_DC)
298{
299    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
300    pdo_dblib_db_handle *H = S->H;
301    DBTYPEINFO* dbtypeinfo;
302
303    if(colno >= stmt->column_count || colno < 0)  {
304        return FAILURE;
305    }
306
307    array_init(return_value);
308
309    dbtypeinfo = dbcoltypeinfo(H->link, colno+1);
310
311    if(!dbtypeinfo) return FAILURE;
312
313    add_assoc_long(return_value, "max_length", dbcollen(H->link, colno+1) );
314    add_assoc_long(return_value, "precision", (int) dbtypeinfo->precision );
315    add_assoc_long(return_value, "scale", (int) dbtypeinfo->scale );
316    add_assoc_string(return_value, "column_source", dbcolsource(H->link, colno+1), 1);
317    add_assoc_string(return_value, "native_type", pdo_dblib_get_field_name(dbcoltype(H->link, colno+1)), 1);
318    add_assoc_long(return_value, "native_type_id", dbcoltype(H->link, colno+1));
319    add_assoc_long(return_value, "native_usertype_id", dbcolutype(H->link, colno+1));
320
321    return 1;
322}
323
324
325struct pdo_stmt_methods dblib_stmt_methods = {
326    pdo_dblib_stmt_dtor,
327    pdo_dblib_stmt_execute,
328    pdo_dblib_stmt_fetch,
329    pdo_dblib_stmt_describe,
330    pdo_dblib_stmt_get_col,
331    pdo_dblib_stmt_param_hook,
332    NULL, /* set attr */
333    NULL, /* get attr */
334    pdo_dblib_stmt_get_column_meta, /* meta */
335    pdo_dblib_stmt_next_rowset, /* nextrow */
336    pdo_dblib_stmt_cursor_closer
337};
338
339