1/*
2   +----------------------------------------------------------------------+
3   | PHP Version 7                                                        |
4   +----------------------------------------------------------------------+
5   | Copyright (c) 1997-2015 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: Ard Biesheuvel <a.k.biesheuvel@its.tudelft.nl>              |
16   +----------------------------------------------------------------------+
17 */
18
19#ifdef HAVE_CONFIG_H
20#include "config.h"
21#endif
22
23#include "php.h"
24#include "php_ini.h"
25
26#if HAVE_IBASE
27
28#include "ext/standard/php_standard.h"
29#include "php_interbase.h"
30#include "php_ibase_includes.h"
31
32#define ISC_LONG_MIN    INT_MIN
33#define ISC_LONG_MAX    INT_MAX
34
35#define QUERY_RESULT    1
36#define EXECUTE_RESULT  2
37
38#define FETCH_ROW       1
39#define FETCH_ARRAY     2
40
41typedef struct {
42    ISC_ARRAY_DESC ar_desc;
43    ISC_LONG ar_size; /* size of entire array in bytes */
44    unsigned short el_type, el_size;
45} ibase_array;
46
47typedef struct {
48    ibase_db_link *link;
49    ibase_trans *trans;
50    struct _ib_query *query;
51    isc_stmt_handle stmt;
52    unsigned short type;
53    unsigned char has_more_rows, statement_type;
54    XSQLDA *out_sqlda;
55    ibase_array out_array[1]; /* last member */
56} ibase_result;
57
58typedef struct _ib_query {
59    ibase_db_link *link;
60    ibase_trans *trans;
61    ibase_result *result;
62    int result_res_id;
63    isc_stmt_handle stmt;
64    XSQLDA *in_sqlda, *out_sqlda;
65    ibase_array *in_array, *out_array;
66    unsigned short in_array_cnt, out_array_cnt;
67    unsigned short dialect;
68    char statement_type;
69    char *query;
70    long trans_res_id;
71} ibase_query;
72
73typedef struct {
74    unsigned short vary_length;
75    char vary_string[1];
76} IBVARY;
77
78/* sql variables union
79 * used for convert and binding input variables
80 */
81typedef struct {
82    union {
83        short sval;
84        float fval;
85        ISC_LONG lval;
86        ISC_QUAD qval;
87        ISC_TIMESTAMP tsval;
88        ISC_DATE dtval;
89        ISC_TIME tmval;
90    } val;
91    short sqlind;
92} BIND_BUF;
93
94static int le_result, le_query;
95
96#define LE_RESULT "Firebird/InterBase result"
97#define LE_QUERY "Firebird/InterBase query"
98
99static void _php_ibase_free_xsqlda(XSQLDA *sqlda) /* {{{ */
100{
101    int i;
102    XSQLVAR *var;
103
104    IBDEBUG("Free XSQLDA?");
105    if (sqlda) {
106        IBDEBUG("Freeing XSQLDA...");
107        var = sqlda->sqlvar;
108        for (i = 0; i < sqlda->sqld; i++, var++) {
109            efree(var->sqldata);
110            if (var->sqlind) {
111                efree(var->sqlind);
112            }
113        }
114        efree(sqlda);
115    }
116}
117/* }}} */
118
119static void _php_ibase_free_stmt_handle(ibase_db_link *link, isc_stmt_handle stmt) /* {{{ */
120{
121    static char info[] = { isc_info_base_level, isc_info_end };
122
123    if (stmt) {
124        char res_buf[8];
125        IBDEBUG("Dropping statement handle (free_stmt_handle)...");
126        /* Only free statement if db-connection is still open */
127        if (SUCCESS == isc_database_info(IB_STATUS, &link->handle,
128                            sizeof(info), info, sizeof(res_buf), res_buf)) {
129            if (isc_dsql_free_statement(IB_STATUS, &stmt, DSQL_drop)) {
130                _php_ibase_error();
131            }
132        }
133    }
134}
135/* }}} */
136
137static void _php_ibase_free_result(zend_resource *rsrc) /* {{{ */
138{
139    ibase_result *ib_result = (ibase_result *) rsrc->ptr;
140
141    IBDEBUG("Freeing result by dtor...");
142    if (ib_result) {
143        _php_ibase_free_xsqlda(ib_result->out_sqlda);
144        if (ib_result->query != NULL) {
145            IBDEBUG("query still valid; don't drop statement handle");
146            ib_result->query->result = NULL;    /* Indicate to query, that result is released */
147        } else {
148            _php_ibase_free_stmt_handle(ib_result->link, ib_result->stmt);
149        }
150        efree(ib_result);
151    }
152}
153/* }}} */
154
155static void _php_ibase_free_query(ibase_query *ib_query) /* {{{ */
156{
157    IBDEBUG("Freeing query...");
158
159    if (ib_query->in_sqlda) {
160        efree(ib_query->in_sqlda);
161    }
162    if (ib_query->out_sqlda) {
163        efree(ib_query->out_sqlda);
164    }
165    if (ib_query->result != NULL) {
166        IBDEBUG("result still valid; don't drop statement handle");
167        ib_query->result->query = NULL; /* Indicate to result, that query is released */
168    } else {
169        _php_ibase_free_stmt_handle(ib_query->link, ib_query->stmt);
170    }
171    if (ib_query->in_array) {
172        efree(ib_query->in_array);
173    }
174    if (ib_query->out_array) {
175        efree(ib_query->out_array);
176    }
177    if (ib_query->query) {
178        efree(ib_query->query);
179    }
180}
181/* }}} */
182
183static void php_ibase_free_query_rsrc(zend_resource *rsrc) /* {{{ */
184{
185    ibase_query *ib_query = (ibase_query *)rsrc->ptr;
186
187    if (ib_query != NULL) {
188        IBDEBUG("Preparing to free query by dtor...");
189        _php_ibase_free_query(ib_query);
190        efree(ib_query);
191    }
192}
193/* }}} */
194
195void php_ibase_query_minit(INIT_FUNC_ARGS) /* {{{ */
196{
197    le_result = zend_register_list_destructors_ex(_php_ibase_free_result, NULL,
198        "interbase result", module_number);
199    le_query = zend_register_list_destructors_ex(php_ibase_free_query_rsrc, NULL,
200        "interbase query", module_number);
201}
202/* }}} */
203
204static int _php_ibase_alloc_array(ibase_array **ib_arrayp, XSQLDA *sqlda, /* {{{ */
205    isc_db_handle link, isc_tr_handle trans, unsigned short *array_cnt)
206{
207    unsigned short i, n;
208    ibase_array *ar;
209
210    /* first check if we have any arrays at all */
211    for (i = *array_cnt = 0; i < sqlda->sqld; ++i) {
212        if ((sqlda->sqlvar[i].sqltype & ~1) == SQL_ARRAY) {
213            ++*array_cnt;
214        }
215    }
216    if (! *array_cnt) return SUCCESS;
217
218    ar = safe_emalloc(sizeof(ibase_array), *array_cnt, 0);
219
220    for (i = n = 0; i < sqlda->sqld; ++i) {
221        unsigned short dim;
222        unsigned long ar_size = 1;
223        XSQLVAR *var = &sqlda->sqlvar[i];
224
225        if ((var->sqltype & ~1) == SQL_ARRAY) {
226            ibase_array *a = &ar[n++];
227            ISC_ARRAY_DESC *ar_desc = &a->ar_desc;
228
229            if (isc_array_lookup_bounds(IB_STATUS, &link, &trans, var->relname,
230                    var->sqlname, ar_desc)) {
231                _php_ibase_error();
232                efree(ar);
233                return FAILURE;
234            }
235
236            switch (ar_desc->array_desc_dtype) {
237                case blr_text:
238                case blr_text2:
239                    a->el_type = SQL_TEXT;
240                    a->el_size = ar_desc->array_desc_length;
241                    break;
242                case blr_short:
243                    a->el_type = SQL_SHORT;
244                    a->el_size = sizeof(short);
245                    break;
246                case blr_long:
247                    a->el_type = SQL_LONG;
248                    a->el_size = sizeof(ISC_LONG);
249                    break;
250                case blr_float:
251                    a->el_type = SQL_FLOAT;
252                    a->el_size = sizeof(float);
253                    break;
254                case blr_double:
255                    a->el_type = SQL_DOUBLE;
256                    a->el_size = sizeof(double);
257                    break;
258                case blr_int64:
259                    a->el_type = SQL_INT64;
260                    a->el_size = sizeof(ISC_INT64);
261                    break;
262                case blr_timestamp:
263                    a->el_type = SQL_TIMESTAMP;
264                    a->el_size = sizeof(ISC_TIMESTAMP);
265                    break;
266                case blr_sql_date:
267                    a->el_type = SQL_TYPE_DATE;
268                    a->el_size = sizeof(ISC_DATE);
269                    break;
270                case blr_sql_time:
271                    a->el_type = SQL_TYPE_TIME;
272                    a->el_size = sizeof(ISC_TIME);
273                    break;
274                case blr_varying:
275                case blr_varying2:
276                    /**
277                     * IB has a strange way of handling VARCHAR arrays. It doesn't store
278                     * the length in the first short, as with VARCHAR fields. It does,
279                     * however, expect the extra short to be allocated for each element.
280                     */
281                    a->el_type = SQL_TEXT;
282                    a->el_size = ar_desc->array_desc_length + sizeof(short);
283                    break;
284                case blr_quad:
285                case blr_blob_id:
286                case blr_cstring:
287                case blr_cstring2:
288                    /**
289                     * These types are mentioned as array types in the manual, but I
290                     * wouldn't know how to create an array field with any of these
291                     * types. I assume these types are not applicable to arrays, and
292                     * were mentioned erroneously.
293                     */
294                default:
295                    _php_ibase_module_error("Unsupported array type %d in relation '%s' column '%s'",
296                        ar_desc->array_desc_dtype, var->relname, var->sqlname);
297                    efree(ar);
298                    return FAILURE;
299            } /* switch array_desc_type */
300
301            /* calculate elements count */
302            for (dim = 0; dim < ar_desc->array_desc_dimensions; dim++) {
303                ar_size *= 1 + ar_desc->array_desc_bounds[dim].array_bound_upper
304                    -ar_desc->array_desc_bounds[dim].array_bound_lower;
305            }
306            a->ar_size = a->el_size * ar_size;
307        } /* if SQL_ARRAY */
308    } /* for column */
309    *ib_arrayp = ar;
310    return SUCCESS;
311}
312/* }}} */
313
314/* allocate and prepare query */
315static int _php_ibase_alloc_query(ibase_query *ib_query, ibase_db_link *link, /* {{{ */
316    ibase_trans *trans, char *query, unsigned short dialect, int trans_res_id)
317{
318    static char info_type[] = {isc_info_sql_stmt_type};
319    char result[8];
320
321    /* Return FAILURE, if querystring is empty */
322    if (*query == '\0') {
323        php_error_docref(NULL, E_WARNING, "Querystring empty.");
324        return FAILURE;
325    }
326
327    ib_query->link = link;
328    ib_query->trans = trans;
329    ib_query->result_res_id = 0;
330    ib_query->result = NULL;
331    ib_query->stmt = NULL;
332    ib_query->in_array = NULL;
333    ib_query->out_array = NULL;
334    ib_query->dialect = dialect;
335    ib_query->query = estrdup(query);
336    ib_query->trans_res_id = trans_res_id;
337    ib_query->out_sqlda = NULL;
338    ib_query->in_sqlda = NULL;
339
340    if (isc_dsql_allocate_statement(IB_STATUS, &link->handle, &ib_query->stmt)) {
341        _php_ibase_error();
342        goto _php_ibase_alloc_query_error;
343    }
344
345    ib_query->out_sqlda = (XSQLDA *) emalloc(XSQLDA_LENGTH(1));
346    ib_query->out_sqlda->sqln = 1;
347    ib_query->out_sqlda->version = SQLDA_CURRENT_VERSION;
348
349    if (isc_dsql_prepare(IB_STATUS, &ib_query->trans->handle, &ib_query->stmt,
350            0, query, dialect, ib_query->out_sqlda)) {
351        _php_ibase_error();
352        goto _php_ibase_alloc_query_error;
353    }
354
355    /* find out what kind of statement was prepared */
356    if (isc_dsql_sql_info(IB_STATUS, &ib_query->stmt, sizeof(info_type),
357            info_type, sizeof(result), result)) {
358        _php_ibase_error();
359        goto _php_ibase_alloc_query_error;
360    }
361    ib_query->statement_type = result[3];
362
363    /* not enough output variables ? */
364    if (ib_query->out_sqlda->sqld > ib_query->out_sqlda->sqln) {
365        ib_query->out_sqlda = erealloc(ib_query->out_sqlda, XSQLDA_LENGTH(ib_query->out_sqlda->sqld));
366        ib_query->out_sqlda->sqln = ib_query->out_sqlda->sqld;
367        ib_query->out_sqlda->version = SQLDA_CURRENT_VERSION;
368        if (isc_dsql_describe(IB_STATUS, &ib_query->stmt, SQLDA_CURRENT_VERSION, ib_query->out_sqlda)) {
369            _php_ibase_error();
370            goto _php_ibase_alloc_query_error;
371        }
372    }
373
374    /* maybe have input placeholders? */
375    ib_query->in_sqlda = emalloc(XSQLDA_LENGTH(1));
376    ib_query->in_sqlda->sqln = 1;
377    ib_query->in_sqlda->version = SQLDA_CURRENT_VERSION;
378    if (isc_dsql_describe_bind(IB_STATUS, &ib_query->stmt, SQLDA_CURRENT_VERSION, ib_query->in_sqlda)) {
379        _php_ibase_error();
380        goto _php_ibase_alloc_query_error;
381    }
382
383    /* not enough input variables ? */
384    if (ib_query->in_sqlda->sqln < ib_query->in_sqlda->sqld) {
385        ib_query->in_sqlda = erealloc(ib_query->in_sqlda, XSQLDA_LENGTH(ib_query->in_sqlda->sqld));
386        ib_query->in_sqlda->sqln = ib_query->in_sqlda->sqld;
387        ib_query->in_sqlda->version = SQLDA_CURRENT_VERSION;
388
389        if (isc_dsql_describe_bind(IB_STATUS, &ib_query->stmt,
390                SQLDA_CURRENT_VERSION, ib_query->in_sqlda)) {
391            _php_ibase_error();
392            goto _php_ibase_alloc_query_error;
393        }
394    }
395
396    /* no, haven't placeholders at all */
397    if (ib_query->in_sqlda->sqld == 0) {
398        efree(ib_query->in_sqlda);
399        ib_query->in_sqlda = NULL;
400    } else if (FAILURE == _php_ibase_alloc_array(&ib_query->in_array, ib_query->in_sqlda,
401            link->handle, trans->handle, &ib_query->in_array_cnt)) {
402        goto _php_ibase_alloc_query_error;
403    }
404
405    if (ib_query->out_sqlda->sqld == 0) {
406        efree(ib_query->out_sqlda);
407        ib_query->out_sqlda = NULL;
408    } else  if (FAILURE == _php_ibase_alloc_array(&ib_query->out_array, ib_query->out_sqlda,
409            link->handle, trans->handle, &ib_query->out_array_cnt)) {
410        goto _php_ibase_alloc_query_error;
411    }
412
413    return SUCCESS;
414
415_php_ibase_alloc_query_error:
416
417    if (ib_query->out_sqlda) {
418        efree(ib_query->out_sqlda);
419    }
420    if (ib_query->in_sqlda) {
421        efree(ib_query->in_sqlda);
422    }
423    if (ib_query->out_array) {
424        efree(ib_query->out_array);
425    }
426    if (ib_query->query) {
427        efree(ib_query->query);
428    }
429    return FAILURE;
430}
431/* }}} */
432
433static int _php_ibase_bind_array(zval *val, char *buf, unsigned long buf_size, /* {{{ */
434    ibase_array *array, int dim)
435{
436    zval null_val, *pnull_val = &null_val;
437    int u_bound = array->ar_desc.array_desc_bounds[dim].array_bound_upper,
438        l_bound = array->ar_desc.array_desc_bounds[dim].array_bound_lower,
439        dim_len = 1 + u_bound - l_bound;
440
441    ZVAL_NULL(pnull_val);
442
443    if (dim < array->ar_desc.array_desc_dimensions) {
444        unsigned long slice_size = buf_size / dim_len;
445        unsigned short i;
446        zval *subval = val;
447
448        if (Z_TYPE_P(val) == IS_ARRAY) {
449            zend_hash_internal_pointer_reset(Z_ARRVAL_P(val));
450        }
451
452        for (i = 0; i < dim_len; ++i) {
453
454            if (Z_TYPE_P(val) == IS_ARRAY &&
455                (subval = zend_hash_get_current_data(Z_ARRVAL_P(val))) == NULL)
456            {
457                subval = pnull_val;
458            }
459
460            if (_php_ibase_bind_array(subval, buf, slice_size, array, dim+1) == FAILURE)
461            {
462                return FAILURE;
463            }
464            buf += slice_size;
465
466            if (Z_TYPE_P(val) == IS_ARRAY) {
467                zend_hash_move_forward(Z_ARRVAL_P(val));
468            }
469        }
470
471        if (Z_TYPE_P(val) == IS_ARRAY) {
472            zend_hash_internal_pointer_reset(Z_ARRVAL_P(val));
473        }
474
475    } else {
476        /* expect a single value */
477        if (Z_TYPE_P(val) == IS_NULL) {
478            memset(buf, 0, buf_size);
479        } else if (array->ar_desc.array_desc_scale < 0) {
480
481            /* no coercion for array types */
482            double l;
483
484            convert_to_double(val);
485
486            if (Z_DVAL_P(val) > 0) {
487                l = Z_DVAL_P(val) * pow(10, -array->ar_desc.array_desc_scale) + .5;
488            } else {
489                l = Z_DVAL_P(val) * pow(10, -array->ar_desc.array_desc_scale) - .5;
490            }
491
492            switch (array->el_type) {
493                case SQL_SHORT:
494                    if (l > SHRT_MAX || l < SHRT_MIN) {
495                        _php_ibase_module_error("Array parameter exceeds field width");
496                        return FAILURE;
497                    }
498                    *(short*) buf = (short) l;
499                    break;
500                case SQL_LONG:
501                    if (l > ISC_LONG_MAX || l < ISC_LONG_MIN) {
502                        _php_ibase_module_error("Array parameter exceeds field width");
503                        return FAILURE;
504                    }
505                    *(ISC_LONG*) buf = (ISC_LONG) l;
506                    break;
507                case SQL_INT64:
508                    {
509                        long double l;
510
511                        convert_to_string(val);
512
513                        if (!sscanf(Z_STRVAL_P(val), "%Lf", &l)) {
514                            _php_ibase_module_error("Cannot convert '%s' to long double",
515                                 Z_STRVAL_P(val));
516                            return FAILURE;
517                        }
518
519                        if (l > 0) {
520                            *(ISC_INT64 *) buf = (ISC_INT64) (l * pow(10,
521                                -array->ar_desc.array_desc_scale) + .5);
522                        } else {
523                            *(ISC_INT64 *) buf = (ISC_INT64) (l * pow(10,
524                                -array->ar_desc.array_desc_scale) - .5);
525                        }
526                    }
527                    break;
528            }
529        } else {
530            struct tm t = { 0, 0, 0, 0, 0, 0 };
531
532            switch (array->el_type) {
533                unsigned short n;
534                ISC_INT64 l;
535
536                case SQL_SHORT:
537                    convert_to_long(val);
538                    if (Z_LVAL_P(val) > SHRT_MAX || Z_LVAL_P(val) < SHRT_MIN) {
539                        _php_ibase_module_error("Array parameter exceeds field width");
540                        return FAILURE;
541                    }
542                    *(short *) buf = (short) Z_LVAL_P(val);
543                    break;
544                case SQL_LONG:
545                    convert_to_long(val);
546#if (SIZEOF_LONG > 4)
547                    if (Z_LVAL_P(val) > ISC_LONG_MAX || Z_LVAL_P(val) < ISC_LONG_MIN) {
548                        _php_ibase_module_error("Array parameter exceeds field width");
549                        return FAILURE;
550                    }
551#endif
552                    *(ISC_LONG *) buf = (ISC_LONG) Z_LVAL_P(val);
553                    break;
554                case SQL_INT64:
555#if (SIZEOF_LONG >= 8)
556                    convert_to_long(val);
557                    *(long *) buf = Z_LVAL_P(val);
558#else
559                    convert_to_string(val);
560                    if (!sscanf(Z_STRVAL_P(val), "%" LL_MASK "d", &l)) {
561                        _php_ibase_module_error("Cannot convert '%s' to long integer",
562                             Z_STRVAL_P(val));
563                        return FAILURE;
564                    } else {
565                        *(ISC_INT64 *) buf = l;
566                    }
567#endif
568                    break;
569                case SQL_FLOAT:
570                    convert_to_double(val);
571                    *(float*) buf = (float) Z_DVAL_P(val);
572                    break;
573                case SQL_DOUBLE:
574                    convert_to_double(val);
575                    *(double*) buf = Z_DVAL_P(val);
576                    break;
577                case SQL_TIMESTAMP:
578                    convert_to_string(val);
579#ifdef HAVE_STRPTIME
580                    strptime(Z_STRVAL_P(val), INI_STR("ibase.timestampformat"), &t);
581#else
582                    n = sscanf(Z_STRVAL_P(val), "%d%*[/]%d%*[/]%d %d%*[:]%d%*[:]%d",
583                        &t.tm_mon, &t.tm_mday, &t.tm_year, &t.tm_hour, &t.tm_min, &t.tm_sec);
584
585                    if (n != 3 && n != 6) {
586                        _php_ibase_module_error("Invalid date/time format (expected 3 or 6 fields, got %d."
587                            " Use format 'm/d/Y H:i:s'. You gave '%s')", n, Z_STRVAL_P(val));
588                        return FAILURE;
589                    }
590                    t.tm_year -= 1900;
591                    t.tm_mon--;
592#endif
593                    isc_encode_timestamp(&t, (ISC_TIMESTAMP * ) buf);
594                    break;
595                case SQL_TYPE_DATE:
596                    convert_to_string(val);
597#ifdef HAVE_STRPTIME
598                    strptime(Z_STRVAL_P(val), INI_STR("ibase.dateformat"), &t);
599#else
600                    n = sscanf(Z_STRVAL_P(val), "%d%*[/]%d%*[/]%d", &t.tm_mon, &t.tm_mday, &t.tm_year);
601
602                    if (n != 3) {
603                        _php_ibase_module_error("Invalid date format (expected 3 fields, got %d. "
604                            "Use format 'm/d/Y' You gave '%s')", n, Z_STRVAL_P(val));
605                        return FAILURE;
606                    }
607                    t.tm_year -= 1900;
608                    t.tm_mon--;
609#endif
610                    isc_encode_sql_date(&t, (ISC_DATE *) buf);
611                    break;
612                case SQL_TYPE_TIME:
613                    convert_to_string(val);
614#ifdef HAVE_STRPTIME
615                    strptime(Z_STRVAL_P(val), INI_STR("ibase.timeformat"), &t);
616#else
617                    n = sscanf(Z_STRVAL_P(val), "%d%*[:]%d%*[:]%d", &t.tm_hour, &t.tm_min, &t.tm_sec);
618
619                    if (n != 3) {
620                        _php_ibase_module_error("Invalid time format (expected 3 fields, got %d. "
621                            "Use format 'H:i:s'. You gave '%s')", n, Z_STRVAL_P(val));
622                        return FAILURE;
623                    }
624#endif
625                    isc_encode_sql_time(&t, (ISC_TIME *) buf);
626                    break;
627                default:
628                    convert_to_string(val);
629                    strlcpy(buf, Z_STRVAL_P(val), buf_size);
630            }
631        }
632    }
633    return SUCCESS;
634}
635/* }}} */
636
637static int _php_ibase_bind(XSQLDA *sqlda, zval *b_vars, BIND_BUF *buf, /* {{{ */
638    ibase_query *ib_query)
639{
640    int i, array_cnt = 0, rv = SUCCESS;
641
642    for (i = 0; i < sqlda->sqld; ++i) { /* bound vars */
643
644        zval *b_var = &b_vars[i];
645        XSQLVAR *var = &sqlda->sqlvar[i];
646
647        var->sqlind = &buf[i].sqlind;
648
649        /* check if a NULL should be inserted */
650        switch (Z_TYPE_P(b_var)) {
651            int force_null;
652
653            case IS_STRING:
654
655                force_null = 0;
656
657                /* for these types, an empty string can be handled like a NULL value */
658                switch (var->sqltype & ~1) {
659                    case SQL_SHORT:
660                    case SQL_LONG:
661                    case SQL_INT64:
662                    case SQL_FLOAT:
663                    case SQL_DOUBLE:
664                    case SQL_TIMESTAMP:
665                    case SQL_TYPE_DATE:
666                    case SQL_TYPE_TIME:
667                        force_null = (Z_STRLEN_P(b_var) == 0);
668                }
669
670                if (! force_null) break;
671
672            case IS_NULL:
673                    buf[i].sqlind = -1;
674
675                if (var->sqltype & SQL_ARRAY) ++array_cnt;
676
677                continue;
678        }
679
680        /* if we make it to this point, we must provide a value for the parameter */
681
682        buf[i].sqlind = 0;
683
684        var->sqldata = (void*)&buf[i].val;
685
686        switch (var->sqltype & ~1) {
687            struct tm t;
688
689            case SQL_TIMESTAMP:
690            case SQL_TYPE_DATE:
691            case SQL_TYPE_TIME:
692                if (Z_TYPE_P(b_var) == IS_LONG) {
693                    struct tm *res;
694                    res = php_gmtime_r(&Z_LVAL_P(b_var), &t);
695                    if (!res) {
696                        return FAILURE;
697                    }
698                } else {
699#ifdef HAVE_STRPTIME
700                    char *format = INI_STR("ibase.timestampformat");
701
702                    convert_to_string(b_var);
703
704                    switch (var->sqltype & ~1) {
705                        case SQL_TYPE_DATE:
706                            format = INI_STR("ibase.dateformat");
707                            break;
708                        case SQL_TYPE_TIME:
709                            format = INI_STR("ibase.timeformat");
710                    }
711                    if (!strptime(Z_STRVAL_P(b_var), format, &t)) {
712                        /* strptime() cannot handle it, so let IB have a try */
713                        break;
714                    }
715#else /* ifndef HAVE_STRPTIME */
716                    break; /* let IB parse it as a string */
717#endif
718                }
719
720                switch (var->sqltype & ~1) {
721                    default: /* == case SQL_TIMESTAMP */
722                        isc_encode_timestamp(&t, &buf[i].val.tsval);
723                        break;
724                    case SQL_TYPE_DATE:
725                        isc_encode_sql_date(&t, &buf[i].val.dtval);
726                        break;
727                    case SQL_TYPE_TIME:
728                        isc_encode_sql_time(&t, &buf[i].val.tmval);
729                        break;
730                }
731                continue;
732
733            case SQL_BLOB:
734
735                convert_to_string(b_var);
736
737                if (Z_STRLEN_P(b_var) != BLOB_ID_LEN ||
738                    !_php_ibase_string_to_quad(Z_STRVAL_P(b_var), &buf[i].val.qval)) {
739
740                    ibase_blob ib_blob = { NULL, BLOB_INPUT };
741
742                    if (isc_create_blob(IB_STATUS, &ib_query->link->handle,
743                            &ib_query->trans->handle, &ib_blob.bl_handle, &ib_blob.bl_qd)) {
744                        _php_ibase_error();
745                        return FAILURE;
746                    }
747
748                    if (_php_ibase_blob_add(b_var, &ib_blob) != SUCCESS) {
749                        return FAILURE;
750                    }
751
752                    if (isc_close_blob(IB_STATUS, &ib_blob.bl_handle)) {
753                        _php_ibase_error();
754                        return FAILURE;
755                    }
756                    buf[i].val.qval = ib_blob.bl_qd;
757                }
758                continue;
759
760            case SQL_ARRAY:
761
762                if (Z_TYPE_P(b_var) != IS_ARRAY) {
763                    convert_to_string(b_var);
764
765                    if (Z_STRLEN_P(b_var) != BLOB_ID_LEN ||
766                        !_php_ibase_string_to_quad(Z_STRVAL_P(b_var), &buf[i].val.qval)) {
767
768                        _php_ibase_module_error("Parameter %d: invalid array ID",i+1);
769                        rv = FAILURE;
770                    }
771                } else {
772                    /* convert the array data into something IB can understand */
773                    ibase_array *ar = &ib_query->in_array[array_cnt];
774                    void *array_data = emalloc(ar->ar_size);
775                    ISC_QUAD array_id = { 0, 0 };
776
777                    if (FAILURE == _php_ibase_bind_array(b_var, array_data, ar->ar_size,
778                            ar, 0)) {
779                        _php_ibase_module_error("Parameter %d: failed to bind array argument", i+1);
780                        efree(array_data);
781                        rv = FAILURE;
782                        continue;
783                    }
784
785                    if (isc_array_put_slice(IB_STATUS, &ib_query->link->handle, &ib_query->trans->handle,
786                            &array_id, &ar->ar_desc, array_data, &ar->ar_size)) {
787                        _php_ibase_error();
788                        efree(array_data);
789                        return FAILURE;
790                    }
791                    buf[i].val.qval = array_id;
792                    efree(array_data);
793                }
794                ++array_cnt;
795                continue;
796            } /* switch */
797
798            /* we end up here if none of the switch cases handled the field */
799            convert_to_string(b_var);
800            var->sqldata = Z_STRVAL_P(b_var);
801            var->sqllen  = Z_STRLEN_P(b_var);
802            var->sqltype = SQL_TEXT;
803    } /* for */
804    return rv;
805}
806/* }}} */
807
808static void _php_ibase_alloc_xsqlda(XSQLDA *sqlda) /* {{{ */
809{
810    int i;
811
812    for (i = 0; i < sqlda->sqld; i++) {
813        XSQLVAR *var = &sqlda->sqlvar[i];
814
815        switch (var->sqltype & ~1) {
816            case SQL_TEXT:
817                var->sqldata = safe_emalloc(sizeof(char), var->sqllen, 0);
818                break;
819            case SQL_VARYING:
820                var->sqldata = safe_emalloc(sizeof(char), var->sqllen + sizeof(short), 0);
821                break;
822            case SQL_SHORT:
823                var->sqldata = emalloc(sizeof(short));
824                break;
825            case SQL_LONG:
826                var->sqldata = emalloc(sizeof(ISC_LONG));
827                break;
828            case SQL_FLOAT:
829                var->sqldata = emalloc(sizeof(float));
830                    break;
831            case SQL_DOUBLE:
832                var->sqldata = emalloc(sizeof(double));
833                break;
834            case SQL_INT64:
835                var->sqldata = emalloc(sizeof(ISC_INT64));
836                break;
837            case SQL_TIMESTAMP:
838                var->sqldata = emalloc(sizeof(ISC_TIMESTAMP));
839                break;
840            case SQL_TYPE_DATE:
841                var->sqldata = emalloc(sizeof(ISC_DATE));
842                break;
843            case SQL_TYPE_TIME:
844                var->sqldata = emalloc(sizeof(ISC_TIME));
845                break;
846            case SQL_BLOB:
847            case SQL_ARRAY:
848                var->sqldata = emalloc(sizeof(ISC_QUAD));
849                break;
850        } /* switch */
851
852        if (var->sqltype & 1) { /* sql NULL flag */
853            var->sqlind = emalloc(sizeof(short));
854        } else {
855            var->sqlind = NULL;
856        }
857    } /* for */
858}
859/* }}} */
860
861static int _php_ibase_exec(INTERNAL_FUNCTION_PARAMETERS, ibase_result **ib_resultp, /* {{{ */
862    ibase_query *ib_query, zval *args)
863{
864    XSQLDA *in_sqlda = NULL, *out_sqlda = NULL;
865    BIND_BUF *bind_buf = NULL;
866    int i, rv = FAILURE;
867    static char info_count[] = { isc_info_sql_records };
868    char result[64];
869    ISC_STATUS isc_result;
870    int argc = ib_query->in_sqlda ? ib_query->in_sqlda->sqld : 0;
871
872    RESET_ERRMSG;
873
874    for (i = 0; i < argc; ++i) {
875        SEPARATE_ZVAL(&args[i]);
876    }
877
878    switch (ib_query->statement_type) {
879        isc_tr_handle tr;
880        ibase_tr_list **l;
881        ibase_trans *trans;
882
883        case isc_info_sql_stmt_start_trans:
884
885            /* a SET TRANSACTION statement should be executed with a NULL trans handle */
886            tr = NULL;
887
888            if (isc_dsql_execute_immediate(IB_STATUS, &ib_query->link->handle, &tr, 0,
889                    ib_query->query, ib_query->dialect, NULL)) {
890                _php_ibase_error();
891                goto _php_ibase_exec_error;
892            }
893
894            trans = (ibase_trans *) emalloc(sizeof(ibase_trans));
895            trans->handle = tr;
896            trans->link_cnt = 1;
897            trans->affected_rows = 0;
898            trans->db_link[0] = ib_query->link;
899
900            if (ib_query->link->tr_list == NULL) {
901                ib_query->link->tr_list = (ibase_tr_list *) emalloc(sizeof(ibase_tr_list));
902                ib_query->link->tr_list->trans = NULL;
903                ib_query->link->tr_list->next = NULL;
904            }
905
906            /* link the transaction into the connection-transaction list */
907            for (l = &ib_query->link->tr_list; *l != NULL; l = &(*l)->next);
908            *l = (ibase_tr_list *) emalloc(sizeof(ibase_tr_list));
909            (*l)->trans = trans;
910            (*l)->next = NULL;
911
912            RETVAL_RES(zend_register_resource(trans, le_trans));
913            Z_TRY_ADDREF_P(return_value);
914
915            return SUCCESS;
916
917        case isc_info_sql_stmt_commit:
918        case isc_info_sql_stmt_rollback:
919
920            if (isc_dsql_execute_immediate(IB_STATUS, &ib_query->link->handle,
921                    &ib_query->trans->handle, 0, ib_query->query, ib_query->dialect, NULL)) {
922                _php_ibase_error();
923                goto _php_ibase_exec_error;
924            }
925
926            if (ib_query->trans->handle == NULL && ib_query->trans_res_id != 0) {
927                /* transaction was released by the query and was a registered resource,
928                   so we have to release it */
929                zval *res = zend_hash_index_find(&EG(regular_list), ib_query->trans_res_id);
930                zend_list_delete(Z_RES_P(res));
931            }
932
933            RETVAL_TRUE;
934
935            return SUCCESS;
936
937        default:
938            RETVAL_FALSE;
939    }
940
941    /* allocate sqlda and output buffers */
942    if (ib_query->out_sqlda) { /* output variables in select, select for update */
943        ibase_result *res;
944
945        IBDEBUG("Query wants XSQLDA for output");
946        res = emalloc(sizeof(ibase_result)+sizeof(ibase_array)*max(0,ib_query->out_array_cnt-1));
947        res->link = ib_query->link;
948        res->trans = ib_query->trans;
949        res->stmt = ib_query->stmt;
950        /* ib_result and ib_query point at each other to handle release of statement handle properly */
951        res->query = ib_query;
952        ib_query->result = res;
953        res->statement_type = ib_query->statement_type;
954        res->has_more_rows = 1;
955
956        out_sqlda = res->out_sqlda = emalloc(XSQLDA_LENGTH(ib_query->out_sqlda->sqld));
957        memcpy(out_sqlda, ib_query->out_sqlda, XSQLDA_LENGTH(ib_query->out_sqlda->sqld));
958        _php_ibase_alloc_xsqlda(out_sqlda);
959
960        if (ib_query->out_array) {
961            memcpy(&res->out_array, ib_query->out_array, sizeof(ibase_array)*ib_query->out_array_cnt);
962        }
963        *ib_resultp = res;
964    }
965
966    if (ib_query->in_sqlda) { /* has placeholders */
967        IBDEBUG("Query wants XSQLDA for input");
968        in_sqlda = emalloc(XSQLDA_LENGTH(ib_query->in_sqlda->sqld));
969        memcpy(in_sqlda, ib_query->in_sqlda, XSQLDA_LENGTH(ib_query->in_sqlda->sqld));
970        bind_buf = safe_emalloc(sizeof(BIND_BUF), ib_query->in_sqlda->sqld, 0);
971        if (_php_ibase_bind(in_sqlda, args, bind_buf, ib_query) == FAILURE) {
972            IBDEBUG("Could not bind input XSQLDA");
973            goto _php_ibase_exec_error;
974        }
975    }
976
977    if (ib_query->statement_type == isc_info_sql_stmt_exec_procedure) {
978        isc_result = isc_dsql_execute2(IB_STATUS, &ib_query->trans->handle,
979            &ib_query->stmt, SQLDA_CURRENT_VERSION, in_sqlda, out_sqlda);
980    } else {
981        isc_result = isc_dsql_execute(IB_STATUS, &ib_query->trans->handle,
982            &ib_query->stmt, SQLDA_CURRENT_VERSION, in_sqlda);
983    }
984    if (isc_result) {
985        IBDEBUG("Could not execute query");
986        _php_ibase_error();
987        goto _php_ibase_exec_error;
988    }
989    ib_query->trans->affected_rows = 0;
990
991    switch (ib_query->statement_type) {
992
993        unsigned long affected_rows;
994
995        case isc_info_sql_stmt_insert:
996        case isc_info_sql_stmt_update:
997        case isc_info_sql_stmt_delete:
998        case isc_info_sql_stmt_exec_procedure:
999
1000            if (isc_dsql_sql_info(IB_STATUS, &ib_query->stmt, sizeof(info_count),
1001                    info_count, sizeof(result), result)) {
1002                _php_ibase_error();
1003                goto _php_ibase_exec_error;
1004            }
1005
1006            affected_rows = 0;
1007
1008            if (result[0] == isc_info_sql_records) {
1009                unsigned i = 3, result_size = isc_vax_integer(&result[1],2);
1010
1011                while (result[i] != isc_info_end && i < result_size) {
1012                    short len = (short)isc_vax_integer(&result[i+1],2);
1013                    if (result[i] != isc_info_req_select_count) {
1014                        affected_rows += isc_vax_integer(&result[i+3],len);
1015                    }
1016                    i += len+3;
1017                }
1018            }
1019
1020            ib_query->trans->affected_rows = affected_rows;
1021
1022            if (!ib_query->out_sqlda) { /* no result set is being returned */
1023                if (affected_rows) {
1024                    RETVAL_LONG(affected_rows);
1025                } else {
1026                    RETVAL_TRUE;
1027                }
1028                break;
1029            }
1030        default:
1031            RETVAL_TRUE;
1032    }
1033
1034    rv = SUCCESS;
1035
1036_php_ibase_exec_error:
1037
1038    if (in_sqlda) {
1039        efree(in_sqlda);
1040    }
1041    if (bind_buf)
1042        efree(bind_buf);
1043
1044    if (rv == FAILURE) {
1045        if (*ib_resultp) {
1046            efree(*ib_resultp);
1047            *ib_resultp = NULL;
1048        }
1049        if (out_sqlda) {
1050            _php_ibase_free_xsqlda(out_sqlda);
1051        }
1052    }
1053
1054    return rv;
1055}
1056/* }}} */
1057
1058/* {{{ proto mixed ibase_query([resource link_identifier, [ resource link_identifier, ]] string query [, mixed bind_arg [, mixed bind_arg [, ...]]])
1059   Execute a query */
1060PHP_FUNCTION(ibase_query)
1061{
1062    zval *zlink, *ztrans, *bind_args = NULL;
1063    char *query;
1064    int bind_i, query_len, bind_num;
1065    long trans_res_id = 0;
1066    ibase_db_link *ib_link = NULL;
1067    ibase_trans *trans = NULL;
1068    ibase_query ib_query = { NULL, NULL, 0, 0 };
1069    ibase_result *result = NULL;
1070
1071    RESET_ERRMSG;
1072
1073    RETVAL_FALSE;
1074
1075    switch (ZEND_NUM_ARGS()) {
1076        long l;
1077
1078        default:
1079            if (SUCCESS == zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, 3, "rrs",
1080                    &zlink, &ztrans, &query, &query_len)) {
1081
1082                ib_link = (ibase_db_link*)zend_fetch_resource2_ex(zlink, LE_LINK, le_link, le_plink);
1083                trans = (ibase_trans*)zend_fetch_resource_ex(ztrans, LE_TRANS,  le_trans);
1084
1085                trans_res_id = Z_RES_P(ztrans)->handle;
1086                bind_i = 3;
1087                break;
1088            }
1089        case 2:
1090            if (SUCCESS == zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, 2, "rs",
1091                    &zlink, &query, &query_len)) {
1092                _php_ibase_get_link_trans(INTERNAL_FUNCTION_PARAM_PASSTHRU, zlink, &ib_link, &trans);
1093
1094                if (trans != NULL) {
1095                    trans_res_id = Z_RES_P(zlink)->handle;
1096                }
1097                bind_i = 2;
1098                break;
1099            }
1100
1101            /* the statement is 'CREATE DATABASE ...' if the link argument is IBASE_CREATE */
1102            if (SUCCESS == zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(),
1103                     "ls", &l, &query, &query_len) && l == PHP_IBASE_CREATE) {
1104                isc_db_handle db = NULL;
1105                isc_tr_handle trans = NULL;
1106
1107                if (PG(sql_safe_mode)) {
1108                    _php_ibase_module_error("CREATE DATABASE is not allowed in SQL safe mode"
1109                        );
1110
1111                } else if (((l = INI_INT("ibase.max_links")) != -1) && (IBG(num_links) >= l)) {
1112                    _php_ibase_module_error("CREATE DATABASE is not allowed: maximum link count "
1113                        "(%ld) reached", l);
1114
1115                } else if (isc_dsql_execute_immediate(IB_STATUS, &db, &trans, (short)query_len,
1116                        query, SQL_DIALECT_CURRENT, NULL)) {
1117                    _php_ibase_error();
1118
1119                } else if (!db) {
1120                    _php_ibase_module_error("Connection to created database could not be "
1121                        "established");
1122
1123                } else {
1124
1125                    /* register the link as a resource; unfortunately, we cannot register
1126                       it in the hash table, because we don't know the connection params */
1127                    ib_link = (ibase_db_link *) emalloc(sizeof(ibase_db_link));
1128                    ib_link->handle = db;
1129                    ib_link->dialect = SQL_DIALECT_CURRENT;
1130                    ib_link->tr_list = NULL;
1131                    ib_link->event_head = NULL;
1132
1133                    RETVAL_RES(zend_register_resource(ib_link, le_link));
1134                    Z_TRY_ADDREF_P(return_value);
1135                    IBG(default_link) = Z_RES_P(return_value)->handle;
1136                    ++IBG(num_links);
1137                }
1138                return;
1139            }
1140        case 1:
1141        case 0:
1142            if (SUCCESS == zend_parse_parameters(ZEND_NUM_ARGS() ? 1 : 0, "s", &query,
1143                    &query_len)) {
1144                ib_link = (ibase_db_link *)zend_fetch_resource2_ex(IBG(default_link), LE_LINK,
1145                    le_link, le_plink);
1146
1147                bind_i = 1;
1148                break;
1149            }
1150            return;
1151    }
1152
1153    /* open default transaction */
1154    if (ib_link == NULL || FAILURE == _php_ibase_def_trans(ib_link, &trans)
1155            || FAILURE == _php_ibase_alloc_query(&ib_query, ib_link, trans, query, ib_link->dialect,
1156                trans_res_id)) {
1157        return;
1158    }
1159
1160    do {
1161        int bind_n = ZEND_NUM_ARGS() - bind_i,
1162            expected_n = ib_query.in_sqlda ? ib_query.in_sqlda->sqld : 0;
1163
1164        if (bind_n != expected_n) {
1165            php_error_docref(NULL, (bind_n < expected_n) ? E_WARNING : E_NOTICE,
1166                "Statement expects %d arguments, %d given", expected_n, bind_n);
1167            if (bind_n < expected_n) {
1168                break;
1169            }
1170        } else if (bind_n > 0) {
1171            if (zend_parse_parameters(ZEND_NUM_ARGS(), "+", &bind_args, &bind_num) == FAILURE) {
1172                return;
1173            }
1174        }
1175
1176        if (FAILURE == _php_ibase_exec(INTERNAL_FUNCTION_PARAM_PASSTHRU, &result, &ib_query,
1177                &bind_args[bind_i])) {
1178            break;
1179        }
1180
1181        if (result != NULL) { /* statement returns a result */
1182            result->type = QUERY_RESULT;
1183
1184            /* EXECUTE PROCEDURE returns only one row => statement can be released immediately */
1185            if (ib_query.statement_type != isc_info_sql_stmt_exec_procedure) {
1186                ib_query.stmt = NULL; /* keep stmt when free query */
1187            }
1188            RETVAL_RES(zend_register_resource(result, le_result));
1189            Z_TRY_ADDREF_P(return_value);
1190        }
1191    } while (0);
1192
1193    _php_ibase_free_query(&ib_query);
1194
1195}
1196/* }}} */
1197
1198/* {{{ proto int ibase_affected_rows( [ resource link_identifier ] )
1199   Returns the number of rows affected by the previous INSERT, UPDATE or DELETE statement */
1200PHP_FUNCTION(ibase_affected_rows)
1201{
1202    ibase_trans *trans = NULL;
1203    ibase_db_link *ib_link;
1204    zval *arg = NULL;
1205
1206    RESET_ERRMSG;
1207
1208    if (zend_parse_parameters(ZEND_NUM_ARGS(), "|r", &arg) == FAILURE) {
1209        return;
1210    }
1211
1212    if (!arg) {
1213        ib_link = (ibase_db_link *)zend_fetch_resource2_ex(IBG(default_link), LE_LINK, le_link, le_plink);
1214        if (ib_link->tr_list == NULL || ib_link->tr_list->trans == NULL) {
1215            RETURN_FALSE;
1216        }
1217        trans = ib_link->tr_list->trans;
1218    } else {
1219        /* one id was passed, could be db or trans id */
1220        _php_ibase_get_link_trans(INTERNAL_FUNCTION_PARAM_PASSTHRU, arg, &ib_link, &trans);
1221        if (trans == NULL) {
1222            ib_link = (ibase_db_link *)zend_fetch_resource2_ex(arg, LE_LINK, le_link, le_plink);
1223
1224            if (ib_link->tr_list == NULL || ib_link->tr_list->trans == NULL) {
1225                RETURN_FALSE;
1226            }
1227            trans = ib_link->tr_list->trans;
1228        }
1229    }
1230    RETURN_LONG(trans->affected_rows);
1231}
1232/* }}} */
1233
1234/* {{{ proto int ibase_num_rows( resource result_identifier )
1235   Return the number of rows that are available in a result */
1236#if abies_0
1237PHP_FUNCTION(ibase_num_rows)
1238{
1239    /**
1240     * As this function relies on the InterBase API function isc_dsql_sql_info()
1241     * which has a couple of limitations (which I hope will be fixed in future
1242     * releases of Firebird), this function is fairly useless. I'm leaving it
1243     * in place for people who can live with the limitations, which I only
1244     * found out about after I had implemented it anyway.
1245     *
1246     * Currently, there's no way to determine how many rows can be fetched from
1247     * a cursor. The only number that _can_ be determined is the number of rows
1248     * that have already been pre-fetched by the client library.
1249     * This implies the following:
1250     * - num_rows() always returns zero before the first fetch;
1251     * - num_rows() for SELECT ... FOR UPDATE is broken -> never returns a
1252     *   higher number than the number of records fetched so far (no pre-fetch);
1253     * - the result of num_rows() for other statements is merely a lower bound
1254     *   on the number of records => calling ibase_num_rows() again after a couple
1255     *   of fetches will most likely return a new (higher) figure for large result
1256     *   sets.
1257     */
1258
1259    zval *result_arg;
1260    ibase_result *ib_result;
1261    static char info_count[] = {isc_info_sql_records};
1262    char result[64];
1263
1264    RESET_ERRMSG;
1265
1266    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &result_arg) == FAILURE) {
1267        return;
1268    }
1269
1270    ib_result = (ibase_result *)zend_fetch_resource_ex(&result_arg, LE_RESULT, le_result);
1271
1272    if (isc_dsql_sql_info(IB_STATUS, &ib_result->stmt, sizeof(info_count), info_count, sizeof(result), result)) {
1273        _php_ibase_error();
1274        RETURN_FALSE;
1275    }
1276
1277    if (result[0] == isc_info_sql_records) {
1278        unsigned i = 3, result_size = isc_vax_integer(&result[1],2);
1279
1280        while (result[i] != isc_info_end && i < result_size) {
1281            short len = (short)isc_vax_integer(&result[i+1],2);
1282            if (result[i] == isc_info_req_select_count) {
1283                RETURN_LONG(isc_vax_integer(&result[i+3],len));
1284            }
1285            i += len+3;
1286        }
1287    }
1288}
1289#endif
1290/* }}} */
1291
1292static int _php_ibase_var_zval(zval *val, void *data, int type, int len, /* {{{ */
1293    int scale, int flag)
1294{
1295    static ISC_INT64 const scales[] = { 1, 10, 100, 1000,
1296        10000,
1297        100000,
1298        1000000,
1299        10000000,
1300        100000000,
1301        1000000000,
1302        LL_LIT(10000000000),
1303        LL_LIT(100000000000),
1304        LL_LIT(1000000000000),
1305        LL_LIT(10000000000000),
1306        LL_LIT(100000000000000),
1307        LL_LIT(1000000000000000),
1308        LL_LIT(10000000000000000),
1309        LL_LIT(100000000000000000),
1310        LL_LIT(1000000000000000000)
1311    };
1312
1313    switch (type & ~1) {
1314        unsigned short l;
1315        long n;
1316        char string_data[255];
1317        struct tm t;
1318        char *format;
1319
1320        case SQL_VARYING:
1321            len = ((IBVARY *) data)->vary_length;
1322            data = ((IBVARY *) data)->vary_string;
1323            /* no break */
1324        case SQL_TEXT:
1325            ZVAL_STRINGL(val, (char*)data, len);
1326            break;
1327        case SQL_SHORT:
1328            n = *(short *) data;
1329            goto _sql_long;
1330        case SQL_INT64:
1331#if (SIZEOF_LONG >= 8)
1332            n = *(long *) data;
1333            goto _sql_long;
1334#else
1335            if (scale == 0) {
1336                l = slprintf(string_data, sizeof(string_data), "%" LL_MASK "d", *(ISC_INT64 *) data);
1337                ZVAL_STRINGL(val,string_data,l);
1338            } else {
1339                ISC_INT64 n = *(ISC_INT64 *) data, f = scales[-scale];
1340
1341                if (n >= 0) {
1342                    l = slprintf(string_data, sizeof(string_data), "%" LL_MASK "d.%0*" LL_MASK "d", n / f, -scale, n % f);
1343                } else if (n <= -f) {
1344                    l = slprintf(string_data, sizeof(string_data), "%" LL_MASK "d.%0*" LL_MASK "d", n / f, -scale, -n % f);
1345                 } else {
1346                    l = slprintf(string_data, sizeof(string_data), "-0.%0*" LL_MASK "d", -scale, -n % f);
1347                }
1348                ZVAL_STRINGL(val,string_data,l);
1349            }
1350            break;
1351#endif
1352        case SQL_LONG:
1353            n = *(ISC_LONG *) data;
1354        _sql_long:
1355            if (scale == 0) {
1356                ZVAL_LONG(val,n);
1357            } else {
1358                long f = (long) scales[-scale];
1359
1360                if (n >= 0) {
1361                    l = slprintf(string_data, sizeof(string_data), "%ld.%0*ld", n / f, -scale,  n % f);
1362                } else if (n <= -f) {
1363                    l = slprintf(string_data, sizeof(string_data), "%ld.%0*ld", n / f, -scale,  -n % f);
1364                } else {
1365                    l = slprintf(string_data, sizeof(string_data), "-0.%0*ld", -scale, -n % f);
1366                }
1367                ZVAL_STRINGL(val, string_data, l);
1368            }
1369            break;
1370        case SQL_FLOAT:
1371            ZVAL_DOUBLE(val, *(float *) data);
1372            break;
1373        case SQL_DOUBLE:
1374            ZVAL_DOUBLE(val, *(double *) data);
1375            break;
1376        case SQL_DATE: /* == case SQL_TIMESTAMP: */
1377            format = INI_STR("ibase.timestampformat");
1378            isc_decode_timestamp((ISC_TIMESTAMP *) data, &t);
1379            goto format_date_time;
1380        case SQL_TYPE_DATE:
1381            format = INI_STR("ibase.dateformat");
1382            isc_decode_sql_date((ISC_DATE *) data, &t);
1383            goto format_date_time;
1384        case SQL_TYPE_TIME:
1385            format = INI_STR("ibase.timeformat");
1386            isc_decode_sql_time((ISC_TIME *) data, &t);
1387
1388format_date_time:
1389            /*
1390              XXX - Might have to remove this later - seems that isc_decode_date()
1391               always sets tm_isdst to 0, sometimes incorrectly (InterBase 6 bug?)
1392            */
1393            t.tm_isdst = -1;
1394#if HAVE_TM_ZONE
1395            t.tm_zone = tzname[0];
1396#endif
1397            if (flag & PHP_IBASE_UNIXTIME) {
1398                ZVAL_LONG(val, mktime(&t));
1399            } else {
1400#if HAVE_STRFTIME
1401                l = strftime(string_data, sizeof(string_data), format, &t);
1402#else
1403                switch (type & ~1) {
1404                    default:
1405                        l = slprintf(string_data, sizeof(string_data), "%02d/%02d/%4d %02d:%02d:%02d", t.tm_mon+1, t.tm_mday,
1406                            t.tm_year + 1900, t.tm_hour, t.tm_min, t.tm_sec);
1407                        break;
1408                    case SQL_TYPE_DATE:
1409                        l = slprintf(string_data, sizeof(string_data), "%02d/%02d/%4d", t.tm_mon + 1, t.tm_mday, t.tm_year+1900);
1410                        break;
1411                    case SQL_TYPE_TIME:
1412                        l = slprintf(string_data, sizeof(string_data), "%02d:%02d:%02d", t.tm_hour, t.tm_min, t.tm_sec);
1413                        break;
1414                }
1415#endif
1416                ZVAL_STRINGL(val, string_data, l);
1417                break;
1418            }
1419    } /* switch (type) */
1420    return SUCCESS;
1421}
1422/* }}}  */
1423
1424static int _php_ibase_arr_zval(zval *ar_zval, char *data, unsigned long data_size, /* {{{ */
1425    ibase_array *ib_array, int dim, int flag)
1426{
1427    /**
1428     * Create multidimension array - recursion function
1429     */
1430    int
1431        u_bound = ib_array->ar_desc.array_desc_bounds[dim].array_bound_upper,
1432        l_bound = ib_array->ar_desc.array_desc_bounds[dim].array_bound_lower,
1433        dim_len = 1 + u_bound - l_bound;
1434    unsigned short i;
1435
1436    if (dim < ib_array->ar_desc.array_desc_dimensions) { /* array again */
1437        unsigned long slice_size = data_size / dim_len;
1438
1439        array_init(ar_zval);
1440
1441        for (i = 0; i < dim_len; ++i) {
1442            zval slice_zval;
1443
1444            /* recursion here */
1445            if (FAILURE == _php_ibase_arr_zval(&slice_zval, data, slice_size, ib_array, dim + 1,
1446                    flag)) {
1447                return FAILURE;
1448            }
1449            data += slice_size;
1450
1451            add_index_zval(ar_zval, l_bound + i, &slice_zval);
1452        }
1453    } else { /* data at last */
1454
1455        if (FAILURE == _php_ibase_var_zval(ar_zval, data, ib_array->el_type,
1456                ib_array->ar_desc.array_desc_length, ib_array->ar_desc.array_desc_scale, flag)) {
1457            return FAILURE;
1458        }
1459
1460        /* fix for peculiar handling of VARCHAR arrays;
1461           truncate the field to the cstring length */
1462        if (ib_array->ar_desc.array_desc_dtype == blr_varying ||
1463            ib_array->ar_desc.array_desc_dtype == blr_varying2) {
1464
1465            Z_STRLEN_P(ar_zval) = strlen(Z_STRVAL_P(ar_zval));
1466        }
1467    }
1468    return SUCCESS;
1469}
1470/* }}} */
1471
1472static void _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAMETERS, int fetch_type) /* {{{ */
1473{
1474    zval *result_arg;
1475    long i, array_cnt = 0, flag = 0;
1476    ibase_result *ib_result;
1477
1478    RESET_ERRMSG;
1479
1480    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r|l", &result_arg, &flag)) {
1481        return;
1482    }
1483
1484    ib_result = (ibase_result *)zend_fetch_resource_ex(result_arg, LE_RESULT, le_result);
1485
1486    if (ib_result->out_sqlda == NULL || !ib_result->has_more_rows) {
1487        RETURN_FALSE;
1488    }
1489
1490    if (ib_result->statement_type != isc_info_sql_stmt_exec_procedure) {
1491        if (isc_dsql_fetch(IB_STATUS, &ib_result->stmt, 1, ib_result->out_sqlda)) {
1492            ib_result->has_more_rows = 0;
1493            if (IB_STATUS[0] && IB_STATUS[1]) { /* error in fetch */
1494                _php_ibase_error();
1495            }
1496            RETURN_FALSE;
1497        }
1498    } else {
1499        ib_result->has_more_rows = 0;
1500    }
1501
1502    array_init(return_value);
1503
1504    for (i = 0; i < ib_result->out_sqlda->sqld; ++i) {
1505        XSQLVAR *var = &ib_result->out_sqlda->sqlvar[i];
1506        char buf[METADATALENGTH+4], *alias = var->aliasname;
1507
1508        if (! (fetch_type & FETCH_ROW)) {
1509            int i = 0;
1510            char const *base = "FIELD"; /* use 'FIELD' if name is empty */
1511
1512            /**
1513            * Ensure no two columns have identical names:
1514            * keep generating new names until we find one that is unique.
1515            */
1516            switch (*alias) {
1517                void *p;
1518
1519                default:
1520                    i = 1;
1521                    base = alias;
1522
1523                    while ((p = zend_symtable_str_find_ptr(
1524                            Z_ARRVAL_P(return_value), alias, strlen(alias))) != NULL) {
1525
1526                case '\0':
1527                        snprintf(alias = buf, sizeof(buf), "%s_%02d", base, i++);
1528                    }
1529            }
1530        }
1531
1532        if (((var->sqltype & 1) == 0) || *var->sqlind != -1) {
1533            zval result;
1534
1535            switch (var->sqltype & ~1) {
1536
1537                default:
1538                    _php_ibase_var_zval(&result, var->sqldata, var->sqltype, var->sqllen,
1539                        var->sqlscale, flag);
1540                    break;
1541                case SQL_BLOB:
1542                    if (flag & PHP_IBASE_FETCH_BLOBS) { /* fetch blob contents into hash */
1543
1544                        ibase_blob blob_handle;
1545                        unsigned long max_len = 0;
1546                        static char bl_items[] = {isc_info_blob_total_length};
1547                        char bl_info[20];
1548                        unsigned short i;
1549
1550                        blob_handle.bl_handle = NULL;
1551                        blob_handle.bl_qd = *(ISC_QUAD *) var->sqldata;
1552
1553                        if (isc_open_blob(IB_STATUS, &ib_result->link->handle, &ib_result->trans->handle,
1554                                &blob_handle.bl_handle, &blob_handle.bl_qd)) {
1555                            _php_ibase_error();
1556                            goto _php_ibase_fetch_error;
1557                        }
1558
1559                        if (isc_blob_info(IB_STATUS, &blob_handle.bl_handle, sizeof(bl_items),
1560                                bl_items, sizeof(bl_info), bl_info)) {
1561                            _php_ibase_error();
1562                            goto _php_ibase_fetch_error;
1563                        }
1564
1565                        /* find total length of blob's data */
1566                        for (i = 0; i < sizeof(bl_info); ) {
1567                            unsigned short item_len;
1568                            char item = bl_info[i++];
1569
1570                            if (item == isc_info_end || item == isc_info_truncated ||
1571                                item == isc_info_error || i >= sizeof(bl_info)) {
1572
1573                                _php_ibase_module_error("Could not determine BLOB size (internal error)"
1574                                    );
1575                                goto _php_ibase_fetch_error;
1576                            }
1577
1578                            item_len = (unsigned short) isc_vax_integer(&bl_info[i], 2);
1579
1580                            if (item == isc_info_blob_total_length) {
1581                                max_len = isc_vax_integer(&bl_info[i+2], item_len);
1582                                break;
1583                            }
1584                            i += item_len+2;
1585                        }
1586
1587                        if (max_len == 0) {
1588                            ZVAL_STRING(&result, "");
1589                        } else if (SUCCESS != _php_ibase_blob_get(&result, &blob_handle,
1590                                max_len)) {
1591                            goto _php_ibase_fetch_error;
1592                        }
1593
1594                        if (isc_close_blob(IB_STATUS, &blob_handle.bl_handle)) {
1595                            _php_ibase_error();
1596                            goto _php_ibase_fetch_error;
1597                        }
1598
1599                    } else { /* blob id only */
1600                        char *s;
1601                        ISC_QUAD bl_qd = *(ISC_QUAD *) var->sqldata;
1602                        s = _php_ibase_quad_to_string(bl_qd);
1603                        ZVAL_STRINGL(&result, s, BLOB_ID_LEN);
1604                        efree(s);
1605                    }
1606                    break;
1607                case SQL_ARRAY:
1608                    if (flag & PHP_IBASE_FETCH_ARRAYS) { /* array can be *huge* so only fetch if asked */
1609                        ISC_QUAD ar_qd = *(ISC_QUAD *) var->sqldata;
1610                        ibase_array *ib_array = &ib_result->out_array[array_cnt++];
1611                        void *ar_data = emalloc(ib_array->ar_size);
1612
1613                        if (isc_array_get_slice(IB_STATUS, &ib_result->link->handle,
1614                                &ib_result->trans->handle, &ar_qd, &ib_array->ar_desc,
1615                                ar_data, &ib_array->ar_size)) {
1616                            _php_ibase_error();
1617                            efree(ar_data);
1618                            goto _php_ibase_fetch_error;
1619                        }
1620
1621                        if (FAILURE == _php_ibase_arr_zval(&result, ar_data, ib_array->ar_size, ib_array,
1622                                0, flag)) {
1623                            efree(ar_data);
1624                            goto _php_ibase_fetch_error;
1625                        }
1626                        efree(ar_data);
1627
1628                    } else { /* blob id only */
1629                        char *s;
1630                        ISC_QUAD ar_qd = *(ISC_QUAD *) var->sqldata;
1631                        s = _php_ibase_quad_to_string(ar_qd);
1632                        ZVAL_STRINGL(&result, s, BLOB_ID_LEN);
1633                    }
1634                    break;
1635                _php_ibase_fetch_error:
1636                    zval_dtor(&result);
1637                    RETURN_FALSE;
1638            } /* switch */
1639
1640            if (fetch_type & FETCH_ROW) {
1641                add_index_zval(return_value, i, &result);
1642            } else {
1643                add_assoc_zval(return_value, alias, &result);
1644            }
1645        } else {
1646            if (fetch_type & FETCH_ROW) {
1647                add_index_null(return_value, i);
1648            } else {
1649                add_assoc_null(return_value, alias);
1650            }
1651        }
1652    } /* for field */
1653}
1654/* }}} */
1655
1656/* {{{ proto array ibase_fetch_row(resource result [, int fetch_flags])
1657   Fetch a row  from the results of a query */
1658PHP_FUNCTION(ibase_fetch_row)
1659{
1660    _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, FETCH_ROW);
1661}
1662/* }}} */
1663
1664/* {{{ proto array ibase_fetch_assoc(resource result [, int fetch_flags])
1665   Fetch a row  from the results of a query */
1666PHP_FUNCTION(ibase_fetch_assoc)
1667{
1668    _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, FETCH_ARRAY);
1669}
1670/* }}} */
1671
1672/* {{{ proto object ibase_fetch_object(resource result [, int fetch_flags])
1673   Fetch a object from the results of a query */
1674PHP_FUNCTION(ibase_fetch_object)
1675{
1676    _php_ibase_fetch_hash(INTERNAL_FUNCTION_PARAM_PASSTHRU, FETCH_ARRAY);
1677
1678    if (Z_TYPE_P(return_value) == IS_ARRAY) {
1679        convert_to_object(return_value);
1680    }
1681}
1682/* }}} */
1683
1684
1685/* {{{ proto bool ibase_name_result(resource result, string name)
1686   Assign a name to a result for use with ... WHERE CURRENT OF <name> statements */
1687PHP_FUNCTION(ibase_name_result)
1688{
1689    zval *result_arg;
1690    char *name_arg;
1691    int name_arg_len;
1692    ibase_result *ib_result;
1693
1694    RESET_ERRMSG;
1695
1696    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rs", &result_arg, &name_arg, &name_arg_len) == FAILURE) {
1697        return;
1698    }
1699
1700    ib_result = (ibase_result *)zend_fetch_resource_ex(result_arg, LE_RESULT, le_result);
1701
1702    if (isc_dsql_set_cursor_name(IB_STATUS, &ib_result->stmt, name_arg, 0)) {
1703        _php_ibase_error();
1704        RETURN_FALSE;
1705    }
1706    RETURN_TRUE;
1707}
1708/* }}} */
1709
1710
1711/* {{{ proto bool ibase_free_result(resource result)
1712   Free the memory used by a result */
1713PHP_FUNCTION(ibase_free_result)
1714{
1715    zval *result_arg;
1716    ibase_result *ib_result;
1717
1718    RESET_ERRMSG;
1719
1720    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &result_arg) == FAILURE) {
1721        return;
1722    }
1723
1724    ib_result = (ibase_result *)zend_fetch_resource_ex(result_arg, LE_RESULT, le_result);
1725    zend_list_delete(Z_RES_P(result_arg));
1726    RETURN_TRUE;
1727}
1728/* }}} */
1729
1730/* {{{ proto resource ibase_prepare(resource link_identifier[, string query [, resource trans_identifier ]])
1731   Prepare a query for later execution */
1732PHP_FUNCTION(ibase_prepare)
1733{
1734    zval *link_arg, *trans_arg;
1735    ibase_db_link *ib_link;
1736    ibase_trans *trans = NULL;
1737    size_t query_len, trans_res_id = 0;
1738    ibase_query *ib_query;
1739    char *query;
1740
1741    RESET_ERRMSG;
1742
1743    if (ZEND_NUM_ARGS() == 1) {
1744        if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &query, &query_len) == FAILURE) {
1745            return;
1746        }
1747        ib_link = (ibase_db_link *)zend_fetch_resource2_ex(IBG(default_link), LE_LINK, le_link, le_plink);
1748    } else if (ZEND_NUM_ARGS() == 2) {
1749        if (zend_parse_parameters(ZEND_NUM_ARGS(), "rs", &link_arg, &query, &query_len) == FAILURE) {
1750            return;
1751        }
1752        _php_ibase_get_link_trans(INTERNAL_FUNCTION_PARAM_PASSTHRU, link_arg, &ib_link, &trans);
1753
1754        if (trans != NULL) {
1755            trans_res_id = Z_RES_P(link_arg)->handle;
1756        }
1757    } else {
1758        if (zend_parse_parameters(ZEND_NUM_ARGS(), "rrs", &link_arg, &trans_arg, &query, &query_len) == FAILURE) {
1759            return;
1760        }
1761        ib_link = (ibase_db_link *)zend_fetch_resource2_ex(link_arg, LE_LINK, le_link, le_plink);
1762        trans = (ibase_trans *)zend_fetch_resource_ex(trans_arg, LE_TRANS, le_trans);
1763        trans_res_id = Z_RES_P(trans_arg)->handle;
1764    }
1765
1766    if (FAILURE == _php_ibase_def_trans(ib_link, &trans)) {
1767        RETURN_FALSE;
1768    }
1769
1770    ib_query = (ibase_query *) emalloc(sizeof(ibase_query));
1771
1772    if (FAILURE == _php_ibase_alloc_query(ib_query, ib_link, trans, query, ib_link->dialect, trans_res_id)) {
1773        efree(ib_query);
1774        RETURN_FALSE;
1775    }
1776    RETVAL_RES(zend_register_resource(ib_query, le_query));
1777    Z_TRY_ADDREF_P(return_value);
1778}
1779/* }}} */
1780
1781/* {{{ proto mixed ibase_execute(resource query [, mixed bind_arg [, mixed bind_arg [, ...]]])
1782   Execute a previously prepared query */
1783PHP_FUNCTION(ibase_execute)
1784{
1785    zval *query, *args = NULL;
1786    ibase_query *ib_query;
1787    ibase_result *result = NULL;
1788    int bind_n = 0;
1789
1790    RESET_ERRMSG;
1791
1792    RETVAL_FALSE;
1793
1794    if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "|r*", &query, &args, &bind_n)) {
1795        return;
1796    }
1797
1798    ib_query = (ibase_query *)zend_fetch_resource_ex(query, LE_QUERY, le_query);
1799
1800    do {
1801        int expected_n = ib_query->in_sqlda ? ib_query->in_sqlda->sqld : 0;
1802
1803        if (bind_n != expected_n) {
1804            php_error_docref(NULL, (bind_n < expected_n) ? E_WARNING : E_NOTICE,
1805                "Statement expects %d arguments, %d given", expected_n, bind_n);
1806
1807            if (bind_n < expected_n) {
1808                break;
1809            }
1810        }
1811
1812        /* Have we used this cursor before and it's still open (exec proc has no cursor) ? */
1813        if (ib_query->result_res_id != 0
1814                && ib_query->statement_type != isc_info_sql_stmt_exec_procedure) {
1815            zval *res;
1816
1817            IBDEBUG("Implicitly closing a cursor");
1818
1819            if (isc_dsql_free_statement(IB_STATUS, &ib_query->stmt, DSQL_close)) {
1820                _php_ibase_error();
1821                break;
1822            }
1823            /* invalidate previous results returned by this query (not necessary for exec proc) */
1824            res = zend_hash_index_find(&EG(regular_list), ib_query->result_res_id);
1825            if (res) {
1826                zend_list_delete(Z_RES_P(res));
1827            }
1828        }
1829
1830        if (FAILURE == _php_ibase_exec(INTERNAL_FUNCTION_PARAM_PASSTHRU, &result, ib_query,
1831                args)) {
1832            break;
1833        }
1834
1835        /* free the query if trans handle was released */
1836        if (ib_query->trans->handle == NULL) {
1837            zend_list_delete(Z_RES_P(query));
1838        }
1839
1840        if (result != NULL) {
1841            zval *ret;
1842
1843            result->type = EXECUTE_RESULT;
1844            if (ib_query->statement_type == isc_info_sql_stmt_exec_procedure) {
1845                result->stmt = NULL;
1846            }
1847
1848            ret = zend_list_insert(result, le_result);
1849            ib_query->result_res_id = Z_RES_HANDLE_P(ret);
1850            ZVAL_COPY_VALUE(return_value, ret);
1851            Z_TRY_ADDREF_P(return_value);
1852            Z_TRY_ADDREF_P(return_value);
1853        }
1854    } while (0);
1855}
1856/* }}} */
1857
1858/* {{{ proto bool ibase_free_query(resource query)
1859   Free memory used by a query */
1860PHP_FUNCTION(ibase_free_query)
1861{
1862    zval *query_arg;
1863    ibase_query *ib_query;
1864
1865    RESET_ERRMSG;
1866
1867    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &query_arg) == FAILURE) {
1868        return;
1869    }
1870
1871    ib_query = (ibase_query *)zend_fetch_resource_ex(query_arg, LE_QUERY, le_query);
1872    zend_list_close(Z_RES_P(query_arg));
1873    RETURN_TRUE;
1874}
1875/* }}} */
1876
1877/* {{{ proto int ibase_num_fields(resource query_result)
1878   Get the number of fields in result */
1879PHP_FUNCTION(ibase_num_fields)
1880{
1881    zval *result;
1882    int type;
1883    XSQLDA *sqlda;
1884
1885    RESET_ERRMSG;
1886
1887    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &result) == FAILURE) {
1888        return;
1889    }
1890
1891    type = Z_RES_P(result)->type;
1892
1893    if (type == le_query) {
1894        ibase_query *ib_query;
1895
1896        ib_query = (ibase_query *)zend_fetch_resource_ex(result, LE_QUERY, le_query);
1897        sqlda = ib_query->out_sqlda;
1898    } else {
1899        ibase_result *ib_result;
1900
1901        ib_result = (ibase_result *)zend_fetch_resource_ex(result, LE_RESULT, le_result);
1902        sqlda = ib_result->out_sqlda;
1903    }
1904
1905    if (sqlda == NULL) {
1906        RETURN_LONG(0);
1907    } else {
1908        RETURN_LONG(sqlda->sqld);
1909    }
1910}
1911/* }}} */
1912
1913static void _php_ibase_field_info(zval *return_value, XSQLVAR *var) /* {{{ */
1914{
1915    unsigned short len;
1916    char buf[16], *s = buf;
1917
1918    array_init(return_value);
1919
1920    add_index_stringl(return_value, 0, var->sqlname, var->sqlname_length);
1921    add_assoc_stringl(return_value, "name", var->sqlname, var->sqlname_length);
1922
1923    add_index_stringl(return_value, 1, var->aliasname, var->aliasname_length);
1924    add_assoc_stringl(return_value, "alias", var->aliasname, var->aliasname_length);
1925
1926    add_index_stringl(return_value, 2, var->relname, var->relname_length);
1927    add_assoc_stringl(return_value, "relation", var->relname, var->relname_length);
1928
1929    len = slprintf(buf, 16, "%d", var->sqllen);
1930    add_index_stringl(return_value, 3, buf, len);
1931    add_assoc_stringl(return_value, "length", buf, len);
1932
1933    if (var->sqlscale < 0) {
1934        unsigned short precision = 0;
1935
1936        switch (var->sqltype & ~1) {
1937
1938            case SQL_SHORT:
1939                precision = 4;
1940                break;
1941            case SQL_LONG:
1942                precision = 9;
1943                break;
1944            case SQL_INT64:
1945                precision = 18;
1946                break;
1947        }
1948        len = slprintf(buf, 16, "NUMERIC(%d,%d)", precision, -var->sqlscale);
1949        add_index_stringl(return_value, 4, s, len);
1950        add_assoc_stringl(return_value, "type", s, len);
1951    } else {
1952        switch (var->sqltype & ~1) {
1953            case SQL_TEXT:
1954                s = "CHAR";
1955                break;
1956            case SQL_VARYING:
1957                s = "VARCHAR";
1958                break;
1959            case SQL_SHORT:
1960                s = "SMALLINT";
1961                break;
1962            case SQL_LONG:
1963                s = "INTEGER";
1964                break;
1965            case SQL_FLOAT:
1966                s = "FLOAT"; break;
1967            case SQL_DOUBLE:
1968            case SQL_D_FLOAT:
1969                s = "DOUBLE PRECISION"; break;
1970            case SQL_INT64:
1971                s = "BIGINT";
1972                break;
1973            case SQL_TIMESTAMP:
1974                s = "TIMESTAMP";
1975                break;
1976            case SQL_TYPE_DATE:
1977                s = "DATE";
1978                break;
1979            case SQL_TYPE_TIME:
1980                s = "TIME";
1981                break;
1982            case SQL_BLOB:
1983                s = "BLOB";
1984                break;
1985            case SQL_ARRAY:
1986                s = "ARRAY";
1987                break;
1988                /* FIXME: provide more detailed information about the field type, field size
1989                 * and array dimensions */
1990            case SQL_QUAD:
1991                s = "QUAD";
1992                break;
1993        }
1994        add_index_string(return_value, 4, s);
1995        add_assoc_string(return_value, "type", s);
1996    }
1997}
1998/* }}} */
1999
2000/* {{{ proto array ibase_field_info(resource query_result, int field_number)
2001   Get information about a field */
2002PHP_FUNCTION(ibase_field_info)
2003{
2004    zval *result_arg;
2005    long field_arg;
2006    int type;
2007    XSQLDA *sqlda;
2008
2009    RESET_ERRMSG;
2010
2011    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rl", &result_arg, &field_arg) == FAILURE) {
2012        return;
2013    }
2014
2015    type = Z_RES_P(result_arg)->type;
2016
2017    if (type == le_query) {
2018        ibase_query *ib_query;
2019
2020        ib_query= (ibase_query *)zend_fetch_resource_ex(result_arg, LE_QUERY, le_query);
2021        sqlda = ib_query->out_sqlda;
2022    } else {
2023        ibase_result *ib_result;
2024
2025        ib_result = (ibase_result *)zend_fetch_resource_ex(result_arg, LE_RESULT, le_result);
2026        sqlda = ib_result->out_sqlda;
2027    }
2028
2029    if (sqlda == NULL) {
2030        _php_ibase_module_error("Trying to get field info from a non-select query");
2031        RETURN_FALSE;
2032    }
2033
2034    if (field_arg < 0 || field_arg >= sqlda->sqld) {
2035        RETURN_FALSE;
2036    }
2037    _php_ibase_field_info(return_value, sqlda->sqlvar + field_arg);
2038}
2039/* }}} */
2040
2041/* {{{ proto int ibase_num_params(resource query)
2042   Get the number of params in a prepared query */
2043PHP_FUNCTION(ibase_num_params)
2044{
2045    zval *result;
2046    ibase_query *ib_query;
2047
2048    RESET_ERRMSG;
2049
2050    if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &result) == FAILURE) {
2051        return;
2052    }
2053
2054    ib_query = (ibase_query *)zend_fetch_resource_ex(result, LE_QUERY, le_query);
2055
2056    if (ib_query->in_sqlda == NULL) {
2057        RETURN_LONG(0);
2058    } else {
2059        RETURN_LONG(ib_query->in_sqlda->sqld);
2060    }
2061}
2062/* }}} */
2063
2064/* {{{ proto array ibase_param_info(resource query, int field_number)
2065   Get information about a parameter */
2066PHP_FUNCTION(ibase_param_info)
2067{
2068    zval *result_arg;
2069    long field_arg;
2070    ibase_query *ib_query;
2071
2072    RESET_ERRMSG;
2073
2074    if (zend_parse_parameters(ZEND_NUM_ARGS(), "rl", &result_arg, &field_arg) == FAILURE) {
2075        return;
2076    }
2077
2078    ib_query = (ibase_query *)zend_fetch_resource_ex(result_arg, LE_QUERY, le_query);
2079
2080    if (ib_query->in_sqlda == NULL) {
2081        RETURN_FALSE;
2082    }
2083
2084    if (field_arg < 0 || field_arg >= ib_query->in_sqlda->sqld) {
2085        RETURN_FALSE;
2086    }
2087
2088    _php_ibase_field_info(return_value,ib_query->in_sqlda->sqlvar + field_arg);
2089}
2090/* }}} */
2091
2092#endif /* HAVE_IBASE */
2093
2094/*
2095 * Local variables:
2096 * tab-width: 4
2097 * c-basic-offset: 4
2098 * End:
2099 * vim600: sw=4 ts=4 fdm=marker
2100 * vim<600: sw=4 ts=4
2101 */
2102