1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Wez Furlong <wez@php.net> |
16 | Marcus Boerger <helly@php.net> |
17 | Sterling Hughes <sterling@php.net> |
18 +----------------------------------------------------------------------+
19 */
20
21 /* $Id$ */
22
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include <ctype.h>
28 #include "php.h"
29 #include "php_ini.h"
30 #include "ext/standard/info.h"
31 #include "php_pdo.h"
32 #include "php_pdo_driver.h"
33 #include "php_pdo_int.h"
34 #include "zend_exceptions.h"
35
36 static zend_class_entry *spl_ce_RuntimeException;
37
38 ZEND_DECLARE_MODULE_GLOBALS(pdo)
39 static PHP_GINIT_FUNCTION(pdo);
40
41 /* True global resources - no need for thread safety here */
42
43 /* the registry of PDO drivers */
44 HashTable pdo_driver_hash;
45
46 /* we use persistent resources for the driver connection stuff */
47 static int le_ppdo;
48
php_pdo_list_entry(void)49 int php_pdo_list_entry(void)
50 {
51 return le_ppdo;
52 }
53
54 /* for exceptional circumstances */
55 zend_class_entry *pdo_exception_ce;
56
php_pdo_get_dbh_ce(void)57 PDO_API zend_class_entry *php_pdo_get_dbh_ce(void)
58 {
59 return pdo_dbh_ce;
60 }
61
php_pdo_get_exception(void)62 PDO_API zend_class_entry *php_pdo_get_exception(void)
63 {
64 return pdo_exception_ce;
65 }
66
php_pdo_str_tolower_dup(const char * src,int len)67 PDO_API char *php_pdo_str_tolower_dup(const char *src, int len)
68 {
69 char *dest = emalloc(len + 1);
70 zend_str_tolower_copy(dest, src, len);
71 return dest;
72 }
73
php_pdo_get_exception_base(int root TSRMLS_DC)74 PDO_API zend_class_entry *php_pdo_get_exception_base(int root TSRMLS_DC)
75 {
76 #if can_handle_soft_dependency_on_SPL && defined(HAVE_SPL) && ((PHP_MAJOR_VERSION > 5) || (PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION >= 1))
77 if (!root) {
78 if (!spl_ce_RuntimeException) {
79 zend_class_entry **pce;
80
81 if (zend_hash_find(CG(class_table), "runtimeexception", sizeof("RuntimeException"), (void **) &pce) == SUCCESS) {
82 spl_ce_RuntimeException = *pce;
83 return *pce;
84 }
85 } else {
86 return spl_ce_RuntimeException;
87 }
88 }
89 #endif
90 #if (PHP_MAJOR_VERSION == 5) && (PHP_MINOR_VERSION < 2)
91 return zend_exception_get_default();
92 #else
93 return zend_exception_get_default(TSRMLS_C);
94 #endif
95 }
96
97 zend_class_entry *pdo_dbh_ce, *pdo_dbstmt_ce, *pdo_row_ce;
98
99 /* {{{ proto array pdo_drivers()
100 Return array of available PDO drivers */
PHP_FUNCTION(pdo_drivers)101 PHP_FUNCTION(pdo_drivers)
102 {
103 HashPosition pos;
104 pdo_driver_t **pdriver;
105
106 if (zend_parse_parameters_none() == FAILURE) {
107 return;
108 }
109
110 array_init(return_value);
111
112 zend_hash_internal_pointer_reset_ex(&pdo_driver_hash, &pos);
113 while (SUCCESS == zend_hash_get_current_data_ex(&pdo_driver_hash, (void**)&pdriver, &pos)) {
114 add_next_index_stringl(return_value, (char*)(*pdriver)->driver_name, (*pdriver)->driver_name_len, 1);
115 zend_hash_move_forward_ex(&pdo_driver_hash, &pos);
116 }
117 }
118 /* }}} */
119
120 /* {{{ arginfo */
121 ZEND_BEGIN_ARG_INFO(arginfo_pdo_drivers, 0)
122 ZEND_END_ARG_INFO()
123 /* }}} */
124
125 /* {{{ pdo_functions[] */
126 const zend_function_entry pdo_functions[] = {
127 PHP_FE(pdo_drivers, arginfo_pdo_drivers)
128 PHP_FE_END
129 };
130 /* }}} */
131
132 /* {{{ pdo_functions[] */
133 #if ZEND_MODULE_API_NO >= 20050922
134 static const zend_module_dep pdo_deps[] = {
135 #ifdef HAVE_SPL
136 ZEND_MOD_REQUIRED("spl")
137 #endif
138 ZEND_MOD_END
139 };
140 #endif
141 /* }}} */
142
143 /* {{{ pdo_module_entry */
144 zend_module_entry pdo_module_entry = {
145 #if ZEND_MODULE_API_NO >= 20050922
146 STANDARD_MODULE_HEADER_EX, NULL,
147 pdo_deps,
148 #else
149 STANDARD_MODULE_HEADER,
150 #endif
151 "PDO",
152 pdo_functions,
153 PHP_MINIT(pdo),
154 PHP_MSHUTDOWN(pdo),
155 NULL,
156 NULL,
157 PHP_MINFO(pdo),
158 "1.0.4dev",
159 PHP_MODULE_GLOBALS(pdo),
160 PHP_GINIT(pdo),
161 NULL,
162 NULL,
163 STANDARD_MODULE_PROPERTIES_EX
164 };
165 /* }}} */
166
167 /* TODO: visit persistent handles: for each persistent statement handle,
168 * remove bound parameter associations */
169
170 #ifdef COMPILE_DL_PDO
171 ZEND_GET_MODULE(pdo)
172 #endif
173
174 /* {{{ PHP_GINIT_FUNCTION */
PHP_GINIT_FUNCTION(pdo)175 static PHP_GINIT_FUNCTION(pdo)
176 {
177 pdo_globals->global_value = 0;
178 }
179 /* }}} */
180
php_pdo_register_driver(pdo_driver_t * driver)181 PDO_API int php_pdo_register_driver(pdo_driver_t *driver)
182 {
183 if (driver->api_version != PDO_DRIVER_API) {
184 zend_error(E_ERROR, "PDO: driver %s requires PDO API version %ld; this is PDO version %d",
185 driver->driver_name, driver->api_version, PDO_DRIVER_API);
186 return FAILURE;
187 }
188 if (!zend_hash_exists(&module_registry, "pdo", sizeof("pdo"))) {
189 zend_error(E_ERROR, "You MUST load PDO before loading any PDO drivers");
190 return FAILURE; /* NOTREACHED */
191 }
192
193 return zend_hash_add(&pdo_driver_hash, (char*)driver->driver_name, driver->driver_name_len,
194 (void**)&driver, sizeof(pdo_driver_t *), NULL);
195 }
196
php_pdo_unregister_driver(pdo_driver_t * driver)197 PDO_API void php_pdo_unregister_driver(pdo_driver_t *driver)
198 {
199 if (!zend_hash_exists(&module_registry, "pdo", sizeof("pdo"))) {
200 return;
201 }
202
203 zend_hash_del(&pdo_driver_hash, (char*)driver->driver_name, driver->driver_name_len);
204 }
205
pdo_find_driver(const char * name,int namelen)206 pdo_driver_t *pdo_find_driver(const char *name, int namelen)
207 {
208 pdo_driver_t **driver = NULL;
209
210 zend_hash_find(&pdo_driver_hash, (char*)name, namelen, (void**)&driver);
211
212 return driver ? *driver : NULL;
213 }
214
php_pdo_parse_data_source(const char * data_source,unsigned long data_source_len,struct pdo_data_src_parser * parsed,int nparams)215 PDO_API int php_pdo_parse_data_source(const char *data_source,
216 unsigned long data_source_len, struct pdo_data_src_parser *parsed,
217 int nparams)
218 {
219 int i, j;
220 int valstart = -1;
221 int semi = -1;
222 int optstart = 0;
223 int nlen;
224 int n_matches = 0;
225 int n_semicolumns = 0;
226
227 i = 0;
228 while (i < data_source_len) {
229 /* looking for NAME= */
230
231 if (data_source[i] == '\0') {
232 break;
233 }
234
235 if (data_source[i] != '=') {
236 ++i;
237 continue;
238 }
239
240 valstart = ++i;
241
242 /* now we're looking for VALUE; or just VALUE<NUL> */
243 semi = -1;
244 n_semicolumns = 0;
245 while (i < data_source_len) {
246 if (data_source[i] == '\0') {
247 semi = i++;
248 break;
249 }
250 if (data_source[i] == ';') {
251 if ((i + 1 >= data_source_len) || data_source[i+1] != ';') {
252 semi = i++;
253 break;
254 } else {
255 n_semicolumns++;
256 i += 2;
257 continue;
258 }
259 }
260 ++i;
261 }
262
263 if (semi == -1) {
264 semi = i;
265 }
266
267 /* find the entry in the array */
268 nlen = valstart - optstart - 1;
269 for (j = 0; j < nparams; j++) {
270 if (0 == strncmp(data_source + optstart, parsed[j].optname, nlen) && parsed[j].optname[nlen] == '\0') {
271 /* got a match */
272 if (parsed[j].freeme) {
273 efree(parsed[j].optval);
274 }
275
276 if (n_semicolumns == 0) {
277 parsed[j].optval = estrndup(data_source + valstart, semi - valstart - n_semicolumns);
278 } else {
279 int vlen = semi - valstart;
280 const char *orig_val = data_source + valstart;
281 char *new_val = (char *) emalloc(vlen - n_semicolumns + 1);
282
283 parsed[j].optval = new_val;
284
285 while (vlen && *orig_val) {
286 *new_val = *orig_val;
287 new_val++;
288
289 if (*orig_val == ';') {
290 orig_val+=2;
291 vlen-=2;
292 } else {
293 orig_val++;
294 vlen--;
295 }
296 }
297 *new_val = '\0';
298 }
299
300 parsed[j].freeme = 1;
301 ++n_matches;
302 break;
303 }
304 }
305
306 while (i < data_source_len && isspace(data_source[i])) {
307 i++;
308 }
309
310 optstart = i;
311 }
312
313 return n_matches;
314 }
315
316 static const char digit_vec[] = "0123456789";
php_pdo_int64_to_str(pdo_int64_t i64 TSRMLS_DC)317 PDO_API char *php_pdo_int64_to_str(pdo_int64_t i64 TSRMLS_DC)
318 {
319 char buffer[65];
320 char outbuf[65] = "";
321 register char *p;
322 long long_val;
323 char *dst = outbuf;
324
325 if (i64 < 0) {
326 i64 = -i64;
327 *dst++ = '-';
328 }
329
330 if (i64 == 0) {
331 *dst++ = '0';
332 *dst++ = '\0';
333 return estrdup(outbuf);
334 }
335
336 p = &buffer[sizeof(buffer)-1];
337 *p = '\0';
338
339 while ((pdo_uint64_t)i64 > (pdo_uint64_t)LONG_MAX) {
340 pdo_uint64_t quo = (pdo_uint64_t)i64 / (unsigned int)10;
341 unsigned int rem = (unsigned int)(i64 - quo*10U);
342 *--p = digit_vec[rem];
343 i64 = (pdo_int64_t)quo;
344 }
345 long_val = (long)i64;
346 while (long_val != 0) {
347 long quo = long_val / 10;
348 *--p = digit_vec[(unsigned int)(long_val - quo * 10)];
349 long_val = quo;
350 }
351 while ((*dst++ = *p++) != 0)
352 ;
353 *dst = '\0';
354 return estrdup(outbuf);
355 }
356
357 /* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(pdo)358 PHP_MINIT_FUNCTION(pdo)
359 {
360 zend_class_entry ce;
361
362 spl_ce_RuntimeException = NULL;
363
364 if (FAILURE == pdo_sqlstate_init_error_table()) {
365 return FAILURE;
366 }
367
368 zend_hash_init(&pdo_driver_hash, 0, NULL, NULL, 1);
369
370 le_ppdo = zend_register_list_destructors_ex(NULL, php_pdo_pdbh_dtor,
371 "PDO persistent database", module_number);
372
373 INIT_CLASS_ENTRY(ce, "PDOException", NULL);
374
375 pdo_exception_ce = zend_register_internal_class_ex(&ce, php_pdo_get_exception_base(0 TSRMLS_CC), NULL TSRMLS_CC);
376
377 zend_declare_property_null(pdo_exception_ce, "errorInfo", sizeof("errorInfo")-1, ZEND_ACC_PUBLIC TSRMLS_CC);
378
379 pdo_dbh_init(TSRMLS_C);
380 pdo_stmt_init(TSRMLS_C);
381
382 return SUCCESS;
383 }
384 /* }}} */
385
386 /* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(pdo)387 PHP_MSHUTDOWN_FUNCTION(pdo)
388 {
389 zend_hash_destroy(&pdo_driver_hash);
390 pdo_sqlstate_fini_error_table();
391 return SUCCESS;
392 }
393 /* }}} */
394
395 /* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(pdo)396 PHP_MINFO_FUNCTION(pdo)
397 {
398 HashPosition pos;
399 char *drivers = NULL, *ldrivers = estrdup("");
400 pdo_driver_t **pdriver;
401
402 php_info_print_table_start();
403 php_info_print_table_header(2, "PDO support", "enabled");
404
405 zend_hash_internal_pointer_reset_ex(&pdo_driver_hash, &pos);
406 while (SUCCESS == zend_hash_get_current_data_ex(&pdo_driver_hash, (void**)&pdriver, &pos)) {
407 spprintf(&drivers, 0, "%s, %s", ldrivers, (*pdriver)->driver_name);
408 zend_hash_move_forward_ex(&pdo_driver_hash, &pos);
409 efree(ldrivers);
410 ldrivers = drivers;
411 }
412
413 php_info_print_table_row(2, "PDO drivers", drivers ? drivers+2 : "");
414
415 if (drivers) {
416 efree(drivers);
417 } else {
418 efree(ldrivers);
419 }
420
421 php_info_print_table_end();
422
423 }
424 /* }}} */
425
426 /*
427 * Local variables:
428 * tab-width: 4
429 * c-basic-offset: 4
430 * End:
431 * vim600: noet sw=4 ts=4 fdm=marker
432 * vim<600: noet sw=4 ts=4
433 */
434
