1/*
2  +----------------------------------------------------------------------+
3  | PHP Version 7                                                        |
4  +----------------------------------------------------------------------+
5  | Copyright (c) 1997-2014 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)
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    return 1;
107}
108
109static int pdo_dblib_stmt_dtor(pdo_stmt_t *stmt)
110{
111    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
112
113    efree(S);
114
115    return 1;
116}
117
118static int pdo_dblib_stmt_next_rowset(pdo_stmt_t *stmt)
119{
120    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
121    pdo_dblib_db_handle *H = S->H;
122    RETCODE ret;
123
124    ret = dbresults(H->link);
125
126    if (FAIL == ret) {
127        pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbresults() returned FAIL");
128        return 0;
129    }
130
131    if(NO_MORE_RESULTS == ret) {
132        return 0;
133    }
134
135    stmt->row_count = DBCOUNT(H->link);
136    stmt->column_count = dbnumcols(H->link);
137
138    return 1;
139}
140
141static int pdo_dblib_stmt_execute(pdo_stmt_t *stmt)
142{
143    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
144    pdo_dblib_db_handle *H = S->H;
145    RETCODE ret;
146
147    dbsetuserdata(H->link, (BYTE*) &S->err);
148
149    pdo_dblib_stmt_cursor_closer(stmt);
150
151    if (FAIL == dbcmd(H->link, stmt->active_query_string)) {
152        return 0;
153    }
154
155    if (FAIL == dbsqlexec(H->link)) {
156        return 0;
157    }
158
159    ret = pdo_dblib_stmt_next_rowset(stmt);
160
161    stmt->row_count = DBCOUNT(H->link);
162    stmt->column_count = dbnumcols(H->link);
163
164    return 1;
165}
166
167static int pdo_dblib_stmt_fetch(pdo_stmt_t *stmt,
168    enum pdo_fetch_orientation ori, zend_long offset)
169{
170
171    RETCODE ret;
172
173    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
174    pdo_dblib_db_handle *H = S->H;
175
176    ret = dbnextrow(H->link);
177
178    if (FAIL == ret) {
179        pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "PDO_DBLIB: dbnextrow() returned FAIL");
180        return 0;
181    }
182
183    if(NO_MORE_ROWS == ret) {
184        return 0;
185    }
186
187    return 1;
188}
189
190static int pdo_dblib_stmt_describe(pdo_stmt_t *stmt, int colno)
191{
192    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
193    pdo_dblib_db_handle *H = S->H;
194
195    if(colno >= stmt->column_count || colno < 0)  {
196        return FAILURE;
197    }
198
199    struct pdo_column_data *col = &stmt->columns[colno];
200
201    col->name =  estrdup(dbcolname(H->link, colno+1));
202    col->maxlen = dbcollen(H->link, colno+1);
203    col->namelen = strlen(col->name);
204    col->param_type = PDO_PARAM_STR;
205
206    return 1;
207}
208
209static int pdo_dblib_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr,
210     zend_ulong *len, int *caller_frees)
211{
212
213    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
214    pdo_dblib_db_handle *H = S->H;
215
216    int coltype;
217    unsigned int tmp_len;
218    char *tmp_ptr = NULL;
219
220    coltype = dbcoltype(H->link, colno+1);
221
222    *len = dbdatlen(H->link, colno+1);
223    *ptr = dbdata(H->link, colno+1);
224
225    if (*len == 0 && *ptr == NULL) {
226        return 1;
227    }
228
229    switch (coltype) {
230        case SQLVARBINARY:
231        case SQLBINARY:
232        case SQLIMAGE:
233        case SQLTEXT:
234            /* FIXME: Above types should be returned as a stream as they can be VERY large */
235        case SQLCHAR:
236        case SQLVARCHAR:
237            tmp_ptr = emalloc(*len + 1);
238            memcpy(tmp_ptr, *ptr, *len);
239            tmp_ptr[*len] = '\0';
240            *ptr = tmp_ptr;
241            break;
242        case SQLMONEY:
243        case SQLMONEY4:
244        case SQLMONEYN: {
245            DBFLT8 money_value;
246            dbconvert(NULL, coltype, *ptr, *len, SQLFLT8, (LPBYTE)&money_value, 8);
247            *len = spprintf(&tmp_ptr, 0, "%.4f", money_value);
248            *ptr = tmp_ptr;
249            break;
250        }
251        case SQLUNIQUE: {
252            *len = 37;
253            tmp_ptr = emalloc(*len + 1);
254            *len = dbconvert(NULL, SQLUNIQUE, *ptr, *len, SQLCHAR, tmp_ptr, *len);
255            php_strtoupper(tmp_ptr, *len);
256            tmp_ptr[36] = '\0';
257            *ptr = tmp_ptr;
258            break;
259        }
260        default:
261            if (dbwillconvert(coltype, SQLCHAR)) {
262                tmp_len = 32 + (2 * (*len)); /* FIXME: We allocate more than we need here */
263                tmp_ptr = emalloc(tmp_len);
264                *len = dbconvert(NULL, coltype, *ptr, *len, SQLCHAR, tmp_ptr, -1);
265                *ptr = tmp_ptr;
266            } else {
267                *len = 0; /* FIXME: Silently fails and returns null on conversion errors */
268                *ptr = NULL;
269            }
270    }
271
272    *caller_frees = 1;
273
274    return 1;
275}
276
277static int pdo_dblib_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_data *param,
278        enum pdo_param_event event_type)
279{
280    return 1;
281}
282
283static int pdo_dblib_stmt_get_column_meta(pdo_stmt_t *stmt, zend_long colno, zval *return_value)
284{
285    pdo_dblib_stmt *S = (pdo_dblib_stmt*)stmt->driver_data;
286    pdo_dblib_db_handle *H = S->H;
287    DBTYPEINFO* dbtypeinfo;
288
289    if(colno >= stmt->column_count || colno < 0)  {
290        return FAILURE;
291    }
292
293    array_init(return_value);
294
295    dbtypeinfo = dbcoltypeinfo(H->link, colno+1);
296
297    if(!dbtypeinfo) return FAILURE;
298
299    add_assoc_long(return_value, "max_length", dbcollen(H->link, colno+1) );
300    add_assoc_long(return_value, "precision", (int) dbtypeinfo->precision );
301    add_assoc_long(return_value, "scale", (int) dbtypeinfo->scale );
302    add_assoc_string(return_value, "column_source", dbcolsource(H->link, colno+1));
303    add_assoc_string(return_value, "native_type", pdo_dblib_get_field_name(dbcoltype(H->link, colno+1)));
304    add_assoc_long(return_value, "native_type_id", dbcoltype(H->link, colno+1));
305    add_assoc_long(return_value, "native_usertype_id", dbcolutype(H->link, colno+1));
306
307    return 1;
308}
309
310
311struct pdo_stmt_methods dblib_stmt_methods = {
312    pdo_dblib_stmt_dtor,
313    pdo_dblib_stmt_execute,
314    pdo_dblib_stmt_fetch,
315    pdo_dblib_stmt_describe,
316    pdo_dblib_stmt_get_col,
317    pdo_dblib_stmt_param_hook,
318    NULL, /* set attr */
319    NULL, /* get attr */
320    pdo_dblib_stmt_get_column_meta, /* meta */
321    pdo_dblib_stmt_next_rowset, /* nextrow */
322    pdo_dblib_stmt_cursor_closer
323};
324
325