1/*
2  +----------------------------------------------------------------------+
3  | PHP Version 5                                                        |
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/info.h"
29#include "pdo/php_pdo.h"
30#include "pdo/php_pdo_driver.h"
31#include "php_pdo_dblib.h"
32#include "php_pdo_dblib_int.h"
33#include "zend_exceptions.h"
34
35/* Cache of the server supported datatypes, initialized in handle_factory */
36zval* pdo_dblib_datatypes;
37
38static int dblib_fetch_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, zval *info TSRMLS_DC)
39{
40    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
41    pdo_dblib_err *einfo = &H->err;
42    pdo_dblib_stmt *S = NULL;
43    char *message;
44    char *msg;
45
46    if (stmt) {
47        S = (pdo_dblib_stmt*)stmt->driver_data;
48        einfo = &S->err;
49    }
50
51    if (einfo->dberr == SYBESMSG && einfo->lastmsg) {
52        msg = einfo->lastmsg;
53    } else if (einfo->dberr == SYBESMSG && DBLIB_G(err).lastmsg) {
54        msg = DBLIB_G(err).lastmsg;
55        DBLIB_G(err).lastmsg = NULL;
56    } else {
57        msg = einfo->dberrstr;
58    }
59
60    spprintf(&message, 0, "%s [%d] (severity %d) [%s]",
61        msg, einfo->dberr, einfo->severity, stmt ? stmt->active_query_string : "");
62
63    add_next_index_long(info, einfo->dberr);
64    add_next_index_string(info, message, 0);
65    add_next_index_long(info, einfo->oserr);
66    add_next_index_long(info, einfo->severity);
67    if (einfo->oserrstr) {
68        add_next_index_string(info, einfo->oserrstr, 1);
69    }
70
71    return 1;
72}
73
74
75static int dblib_handle_closer(pdo_dbh_t *dbh TSRMLS_DC)
76{
77    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
78
79    if (H) {
80        if (H->link) {
81            dbclose(H->link);
82            H->link = NULL;
83        }
84        if (H->login) {
85            dbfreelogin(H->login);
86            H->login = NULL;
87        }
88        pefree(H, dbh->is_persistent);
89        dbh->driver_data = NULL;
90    }
91    return 0;
92}
93
94static int dblib_handle_preparer(pdo_dbh_t *dbh, const char *sql, long sql_len, pdo_stmt_t *stmt, zval *driver_options TSRMLS_DC)
95{
96    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
97    pdo_dblib_stmt *S = ecalloc(1, sizeof(*S));
98
99    S->H = H;
100    stmt->driver_data = S;
101    stmt->methods = &dblib_stmt_methods;
102    stmt->supports_placeholders = PDO_PLACEHOLDER_NONE;
103    S->err.sqlstate = stmt->error_code;
104
105    return 1;
106}
107
108static long dblib_handle_doer(pdo_dbh_t *dbh, const char *sql, long sql_len TSRMLS_DC)
109{
110    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
111    RETCODE ret, resret;
112
113    dbsetuserdata(H->link, (BYTE*)&H->err);
114
115    if (FAIL == dbcmd(H->link, sql)) {
116        return -1;
117    }
118
119    if (FAIL == dbsqlexec(H->link)) {
120        return -1;
121    }
122
123    resret = dbresults(H->link);
124
125    if (resret == FAIL) {
126        return -1;
127    }
128
129    ret = dbnextrow(H->link);
130    if (ret == FAIL) {
131        return -1;
132    }
133
134    if (dbnumcols(H->link) <= 0) {
135        return DBCOUNT(H->link);
136    }
137
138    /* throw away any rows it might have returned */
139    dbcanquery(H->link);
140
141    return DBCOUNT(H->link);
142}
143
144static int dblib_handle_quoter(pdo_dbh_t *dbh, const char *unquoted, int unquotedlen, char **quoted, int *quotedlen, enum pdo_param_type paramtype TSRMLS_DC)
145{
146    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
147    char *q;
148    int l = 1;
149
150    *quoted = q = safe_emalloc(2, unquotedlen, 3);
151    *q++ = '\'';
152
153    while (unquotedlen--) {
154        if (*unquoted == '\'') {
155            *q++ = '\'';
156            *q++ = '\'';
157            l += 2;
158        } else {
159            *q++ = *unquoted;
160            ++l;
161        }
162        unquoted++;
163    }
164
165    *q++ = '\'';
166    *q++ = '\0';
167    *quotedlen = l+1;
168
169    return 1;
170}
171
172static int pdo_dblib_transaction_cmd(const char *cmd, pdo_dbh_t *dbh TSRMLS_DC)
173{
174    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
175    RETCODE ret;
176
177    if (FAIL == dbcmd(H->link, cmd)) {
178        return 0;
179    }
180
181    if (FAIL == dbsqlexec(H->link)) {
182        return 0;
183    }
184
185    return 1;
186}
187
188static int dblib_handle_begin(pdo_dbh_t *dbh TSRMLS_DC)
189{
190    return pdo_dblib_transaction_cmd("BEGIN TRANSACTION", dbh TSRMLS_CC);
191}
192
193static int dblib_handle_commit(pdo_dbh_t *dbh TSRMLS_DC)
194{
195    return pdo_dblib_transaction_cmd("COMMIT TRANSACTION", dbh TSRMLS_CC);
196}
197
198static int dblib_handle_rollback(pdo_dbh_t *dbh TSRMLS_DC)
199{
200    return pdo_dblib_transaction_cmd("ROLLBACK TRANSACTION", dbh TSRMLS_CC);
201}
202
203char *dblib_handle_last_id(pdo_dbh_t *dbh, const char *name, unsigned int *len TSRMLS_DC)
204{
205    pdo_dblib_db_handle *H = (pdo_dblib_db_handle *)dbh->driver_data;
206
207    RETCODE ret;
208    char *id = NULL;
209
210    /*
211     * Would use scope_identity() but it's not implemented on Sybase
212     */
213
214    if (FAIL == dbcmd(H->link, "SELECT @@IDENTITY")) {
215        return NULL;
216    }
217
218    if (FAIL == dbsqlexec(H->link)) {
219        return NULL;
220    }
221
222    ret = dbresults(H->link);
223    if (ret == FAIL || ret == NO_MORE_RESULTS) {
224        dbcancel(H->link);
225        return NULL;
226    }
227
228    ret = dbnextrow(H->link);
229
230    if (ret == FAIL || ret == NO_MORE_ROWS) {
231        dbcancel(H->link);
232        return NULL;
233    }
234
235    if (dbdatlen(H->link, 1) == 0) {
236        dbcancel(H->link);
237        return NULL;
238    }
239
240    id = emalloc(32);
241    *len = dbconvert(NULL, (dbcoltype(H->link, 1)) , (dbdata(H->link, 1)) , (dbdatlen(H->link, 1)), SQLCHAR, id, (DBINT)-1);
242
243    dbcancel(H->link);
244    return id;
245}
246
247static struct pdo_dbh_methods dblib_methods = {
248    dblib_handle_closer,
249    dblib_handle_preparer,
250    dblib_handle_doer,
251    dblib_handle_quoter,
252    dblib_handle_begin, /* begin */
253    dblib_handle_commit, /* commit */
254    dblib_handle_rollback, /* rollback */
255    NULL, /*set attr */
256    dblib_handle_last_id, /* last insert id */
257    dblib_fetch_error, /* fetch error */
258    NULL, /* get attr */
259    NULL, /* check liveness */
260    NULL, /* get driver methods */
261    NULL, /* request shutdown */
262    NULL  /* in transaction */
263};
264
265static int pdo_dblib_handle_factory(pdo_dbh_t *dbh, zval *driver_options TSRMLS_DC)
266{
267    pdo_dblib_db_handle *H;
268    int i, nvars, nvers, ret = 0;
269    int *val;
270
271    const pdo_dblib_keyval tdsver[] = {
272         {"4.2",DBVERSION_42}
273        ,{"4.6",DBVERSION_46}
274        ,{"5.0",DBVERSION_70} /* FIXME: This does not work with Sybase, but environ will */
275        ,{"6.0",DBVERSION_70}
276        ,{"7.0",DBVERSION_70}
277#ifdef DBVERSION_71
278        ,{"7.1",DBVERSION_71}
279#endif
280#ifdef DBVERSION_72
281        ,{"7.2",DBVERSION_72}
282        ,{"8.0",DBVERSION_72}
283#endif
284        ,{"10.0",DBVERSION_100}
285        ,{"auto",0} /* Only works with FreeTDS. Other drivers will bork */
286
287    };
288
289    nvers = sizeof(tdsver)/sizeof(tdsver[0]);
290
291    struct pdo_data_src_parser vars[] = {
292        { "charset",    NULL,   0 }
293        ,{ "appname",   "PHP " PDO_DBLIB_FLAVOUR,   0 }
294        ,{ "host",      "127.0.0.1", 0 }
295        ,{ "dbname",    NULL,   0 }
296        ,{ "secure",    NULL,   0 } /* DBSETLSECURE */
297        ,{ "version",   NULL,   0 } /* DBSETLVERSION */
298    };
299
300    nvars = sizeof(vars)/sizeof(vars[0]);
301
302    php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, nvars);
303
304    H = pecalloc(1, sizeof(*H), dbh->is_persistent);
305    H->login = dblogin();
306    H->err.sqlstate = dbh->error_code;
307
308    if (!H->login) {
309        goto cleanup;
310    }
311
312    DBERRHANDLE(H->login, (EHANDLEFUNC) error_handler);
313    DBMSGHANDLE(H->login, (MHANDLEFUNC) msg_handler);
314
315    if(vars[5].optval) {
316        for(i=0;i<nvers;i++) {
317            if(strcmp(vars[5].optval,tdsver[i].key) == 0) {
318                if(FAIL==dbsetlversion(H->login, tdsver[i].value)) {
319                    pdo_raise_impl_error(dbh, NULL, "HY000", "PDO_DBLIB: Failed to set version specified in connection string." TSRMLS_CC);
320                    goto cleanup;
321                }
322                break;
323            }
324        }
325
326        if (i==nvers) {
327            printf("Invalid version '%s'\n", vars[5].optval);
328            pdo_raise_impl_error(dbh, NULL, "HY000", "PDO_DBLIB: Invalid version specified in connection string." TSRMLS_CC);
329            goto cleanup; /* unknown version specified */
330        }
331    }
332
333    if (dbh->username) {
334        if(FAIL == DBSETLUSER(H->login, dbh->username)) {
335            goto cleanup;
336        }
337    }
338
339    if (dbh->password) {
340        if(FAIL == DBSETLPWD(H->login, dbh->password)) {
341            goto cleanup;
342        }
343    }
344
345#if !PHP_DBLIB_IS_MSSQL
346    if (vars[0].optval) {
347        DBSETLCHARSET(H->login, vars[0].optval);
348    }
349#endif
350
351    DBSETLAPP(H->login, vars[1].optval);
352
353/* DBSETLDBNAME is only available in FreeTDS 0.92 or above */
354#ifdef DBSETLDBNAME
355    if (vars[3].optval) {
356        if(FAIL == DBSETLDBNAME(H->login, vars[3].optval)) goto cleanup;
357    }
358#endif
359
360    H->link = dbopen(H->login, vars[2].optval);
361
362    if (!H->link) {
363        goto cleanup;
364    }
365
366/*
367 * FreeTDS < 0.92 does not support the DBSETLDBNAME option
368 * Send use database here after login (Will not work with SQL Azure)
369 */
370#ifndef DBSETLDBNAME
371    if (vars[3].optval) {
372        if(FAIL == dbuse(H->link, vars[3].optval)) goto cleanup;
373    }
374#endif
375
376#if PHP_DBLIB_IS_MSSQL
377    /* dblib do not return more than this length from text/image */
378    DBSETOPT(H->link, DBTEXTLIMIT, "2147483647");
379#endif
380
381    /* limit text/image from network */
382    DBSETOPT(H->link, DBTEXTSIZE, "2147483647");
383
384    /* allow double quoted indentifiers */
385    DBSETOPT(H->link, DBQUOTEDIDENT, "1");
386
387    ret = 1;
388    dbh->max_escaped_char_length = 2;
389    dbh->alloc_own_columns = 1;
390
391cleanup:
392    for (i = 0; i < nvars; i++) {
393        if (vars[i].freeme) {
394            efree(vars[i].optval);
395        }
396    }
397
398    dbh->methods = &dblib_methods;
399    dbh->driver_data = H;
400
401    if (!ret) {
402        zend_throw_exception_ex(php_pdo_get_exception(), DBLIB_G(err).dberr TSRMLS_CC,
403            "SQLSTATE[%s] %s (severity %d)",
404            DBLIB_G(err).sqlstate,
405            DBLIB_G(err).dberrstr,
406            DBLIB_G(err).severity);
407    }
408
409    return ret;
410}
411
412pdo_driver_t pdo_dblib_driver = {
413#if PDO_DBLIB_IS_MSSQL
414    PDO_DRIVER_HEADER(mssql),
415#elif defined(PHP_WIN32)
416#define PDO_DBLIB_IS_SYBASE
417    PDO_DRIVER_HEADER(sybase),
418#else
419    PDO_DRIVER_HEADER(dblib),
420#endif
421    pdo_dblib_handle_factory
422};
423
424