1 %{
2 /*
3 +----------------------------------------------------------------------+
4 | Zend Engine |
5 +----------------------------------------------------------------------+
6 | Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
7 +----------------------------------------------------------------------+
8 | This source file is subject to version 2.00 of the Zend license, |
9 | that is bundled with this package in the file LICENSE, and is |
10 | available through the world-wide-web at the following url: |
11 | http://www.zend.com/license/2_00.txt. |
12 | If you did not receive a copy of the Zend license and are unable to |
13 | obtain it through the world-wide-web, please send a note to |
14 | license@zend.com so we can mail you a copy immediately. |
15 +----------------------------------------------------------------------+
16 | Authors: Zeev Suraski <zeev@zend.com> |
17 | Jani Taskinen <jani@php.net> |
18 +----------------------------------------------------------------------+
19 */
20
21 /* $Id$ */
22
23 #define DEBUG_CFG_PARSER 0
24
25 #include "zend.h"
26 #include "zend_API.h"
27 #include "zend_ini.h"
28 #include "zend_constants.h"
29 #include "zend_ini_scanner.h"
30 #include "zend_extensions.h"
31
32 #ifdef ZEND_WIN32
33 #include "win32/syslog.h"
34 #endif
35
36 #define YYERROR_VERBOSE
37 #define YYSTYPE zval
38
39 int ini_parse(void);
40
41 #define ZEND_INI_PARSER_CB (CG(ini_parser_param))->ini_parser_cb
42 #define ZEND_INI_PARSER_ARG (CG(ini_parser_param))->arg
43
44 #ifdef _MSC_VER
45 #define YYMALLOC malloc
46 #define YYFREE free
47 #endif
48
49 #define ZEND_SYSTEM_INI CG(ini_parser_unbuffered_errors)
50
51 /* {{{ zend_ini_do_op()
52 */
zend_ini_do_op(char type,zval * result,zval * op1,zval * op2)53 static void zend_ini_do_op(char type, zval *result, zval *op1, zval *op2)
54 {
55 int i_result;
56 int i_op1, i_op2;
57 int str_len;
58 char str_result[MAX_LENGTH_OF_LONG+1];
59
60 if (IS_LONG == Z_TYPE_P(op1)) {
61 i_op1 = Z_LVAL_P(op1);
62 } else {
63 i_op1 = atoi(Z_STRVAL_P(op1));
64 zend_string_free(Z_STR_P(op1));
65 }
66 if (op2) {
67 if (IS_LONG == Z_TYPE_P(op2)) {
68 i_op2 = Z_LVAL_P(op2);
69 } else {
70 i_op2 = atoi(Z_STRVAL_P(op2));
71 zend_string_free(Z_STR_P(op2));
72 }
73 } else {
74 i_op2 = 0;
75 }
76
77 switch (type) {
78 case '|':
79 i_result = i_op1 | i_op2;
80 break;
81 case '&':
82 i_result = i_op1 & i_op2;
83 break;
84 case '^':
85 i_result = i_op1 ^ i_op2;
86 break;
87 case '~':
88 i_result = ~i_op1;
89 break;
90 case '!':
91 i_result = !i_op1;
92 break;
93 default:
94 i_result = 0;
95 break;
96 }
97
98 str_len = zend_sprintf(str_result, "%d", i_result);
99 ZVAL_NEW_STR(result, zend_string_init(str_result, str_len, ZEND_SYSTEM_INI));
100 }
101 /* }}} */
102
103 /* {{{ zend_ini_init_string()
104 */
zend_ini_init_string(zval * result)105 static void zend_ini_init_string(zval *result)
106 {
107 if (ZEND_SYSTEM_INI) {
108 ZVAL_EMPTY_PSTRING(result);
109 } else {
110 ZVAL_EMPTY_STRING(result);
111 }
112 }
113 /* }}} */
114
115 /* {{{ zend_ini_add_string()
116 */
zend_ini_add_string(zval * result,zval * op1,zval * op2)117 static void zend_ini_add_string(zval *result, zval *op1, zval *op2)
118 {
119 int length, op1_len;
120
121 if (Z_TYPE_P(op1) != IS_STRING) {
122 zend_string *str = zval_get_string(op1);
123 /* ZEND_ASSERT(!Z_REFCOUNTED_P(op1)); */
124 if (ZEND_SYSTEM_INI) {
125 ZVAL_PSTRINGL(op1, ZSTR_VAL(str), ZSTR_LEN(str));
126 zend_string_release(str);
127 } else {
128 ZVAL_STR(op1, str);
129 }
130 }
131 op1_len = (int)Z_STRLEN_P(op1);
132
133 if (Z_TYPE_P(op2) != IS_STRING) {
134 convert_to_string(op2);
135 }
136 length = op1_len + (int)Z_STRLEN_P(op2);
137
138 ZVAL_NEW_STR(result, zend_string_extend(Z_STR_P(op1), length, ZEND_SYSTEM_INI));
139 memcpy(Z_STRVAL_P(result) + op1_len, Z_STRVAL_P(op2), Z_STRLEN_P(op2) + 1);
140 }
141 /* }}} */
142
143 /* {{{ zend_ini_get_constant()
144 */
zend_ini_get_constant(zval * result,zval * name)145 static void zend_ini_get_constant(zval *result, zval *name)
146 {
147 zval *c, tmp;
148
149 /* If name contains ':' it is not a constant. Bug #26893. */
150 if (!memchr(Z_STRVAL_P(name), ':', Z_STRLEN_P(name))
151 && (c = zend_get_constant(Z_STR_P(name))) != 0) {
152 if (Z_TYPE_P(c) != IS_STRING) {
153 ZVAL_DUP(&tmp, c);
154 if (Z_OPT_CONSTANT(tmp)) {
155 zval_update_constant_ex(&tmp, NULL);
156 }
157 convert_to_string(&tmp);
158 c = &tmp;
159 }
160 ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(c), Z_STRLEN_P(c), ZEND_SYSTEM_INI));
161 if (c == &tmp) {
162 zend_string_release(Z_STR(tmp));
163 }
164 zend_string_free(Z_STR_P(name));
165 } else {
166 *result = *name;
167 }
168 }
169 /* }}} */
170
171 /* {{{ zend_ini_get_var()
172 */
zend_ini_get_var(zval * result,zval * name)173 static void zend_ini_get_var(zval *result, zval *name)
174 {
175 zval *curval;
176 char *envvar;
177
178 /* Fetch configuration option value */
179 if ((curval = zend_get_configuration_directive(Z_STR_P(name))) != NULL) {
180 ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(curval), Z_STRLEN_P(curval), ZEND_SYSTEM_INI));
181 /* ..or if not found, try ENV */
182 } else if ((envvar = zend_getenv(Z_STRVAL_P(name), Z_STRLEN_P(name))) != NULL ||
183 (envvar = getenv(Z_STRVAL_P(name))) != NULL) {
184 ZVAL_NEW_STR(result, zend_string_init(envvar, strlen(envvar), ZEND_SYSTEM_INI));
185 } else {
186 zend_ini_init_string(result);
187 }
188 }
189 /* }}} */
190
191 /* {{{ ini_error()
192 */
ini_error(const char * msg)193 static ZEND_COLD void ini_error(const char *msg)
194 {
195 char *error_buf;
196 int error_buf_len;
197 char *currently_parsed_filename;
198
199 currently_parsed_filename = zend_ini_scanner_get_filename();
200 if (currently_parsed_filename) {
201 error_buf_len = 128 + (int)strlen(msg) + (int)strlen(currently_parsed_filename); /* should be more than enough */
202 error_buf = (char *) emalloc(error_buf_len);
203
204 sprintf(error_buf, "%s in %s on line %d\n", msg, currently_parsed_filename, zend_ini_scanner_get_lineno());
205 } else {
206 error_buf = estrdup("Invalid configuration directive\n");
207 }
208
209 if (CG(ini_parser_unbuffered_errors)) {
210 #ifdef ZEND_WIN32
211 syslog(LOG_ALERT, "PHP: %s (%s)", error_buf, GetCommandLine());
212 #endif
213 fprintf(stderr, "PHP: %s", error_buf);
214 } else {
215 zend_error(E_WARNING, "%s", error_buf);
216 }
217 efree(error_buf);
218 }
219 /* }}} */
220
221 /* {{{ zend_parse_ini_file()
222 */
zend_parse_ini_file(zend_file_handle * fh,zend_bool unbuffered_errors,int scanner_mode,zend_ini_parser_cb_t ini_parser_cb,void * arg)223 ZEND_API int zend_parse_ini_file(zend_file_handle *fh, zend_bool unbuffered_errors, int scanner_mode, zend_ini_parser_cb_t ini_parser_cb, void *arg)
224 {
225 int retval;
226 zend_ini_parser_param ini_parser_param;
227
228 ini_parser_param.ini_parser_cb = ini_parser_cb;
229 ini_parser_param.arg = arg;
230 CG(ini_parser_param) = &ini_parser_param;
231
232 if (zend_ini_open_file_for_scanning(fh, scanner_mode) == FAILURE) {
233 return FAILURE;
234 }
235
236 CG(ini_parser_unbuffered_errors) = unbuffered_errors;
237 retval = ini_parse();
238 zend_file_handle_dtor(fh);
239
240 shutdown_ini_scanner();
241
242 if (retval == 0) {
243 return SUCCESS;
244 } else {
245 return FAILURE;
246 }
247 }
248 /* }}} */
249
250 /* {{{ zend_parse_ini_string()
251 */
zend_parse_ini_string(char * str,zend_bool unbuffered_errors,int scanner_mode,zend_ini_parser_cb_t ini_parser_cb,void * arg)252 ZEND_API int zend_parse_ini_string(char *str, zend_bool unbuffered_errors, int scanner_mode, zend_ini_parser_cb_t ini_parser_cb, void *arg)
253 {
254 int retval;
255 zend_ini_parser_param ini_parser_param;
256
257 ini_parser_param.ini_parser_cb = ini_parser_cb;
258 ini_parser_param.arg = arg;
259 CG(ini_parser_param) = &ini_parser_param;
260
261 if (zend_ini_prepare_string_for_scanning(str, scanner_mode) == FAILURE) {
262 return FAILURE;
263 }
264
265 CG(ini_parser_unbuffered_errors) = unbuffered_errors;
266 retval = ini_parse();
267
268 shutdown_ini_scanner();
269
270 if (retval == 0) {
271 return SUCCESS;
272 } else {
273 return FAILURE;
274 }
275 }
276 /* }}} */
277
278 %}
279
280 %expect 0
281 %pure-parser
282
283 %token TC_SECTION
284 %token TC_RAW
285 %token TC_CONSTANT
286 %token TC_NUMBER
287 %token TC_STRING
288 %token TC_WHITESPACE
289 %token TC_LABEL
290 %token TC_OFFSET
291 %token TC_DOLLAR_CURLY
292 %token TC_VARNAME
293 %token TC_QUOTED_STRING
294 %token BOOL_TRUE
295 %token BOOL_FALSE
296 %token NULL_NULL
297 %token END_OF_LINE
298 %token '=' ':' ',' '.' '"' '\'' '^' '+' '-' '/' '*' '%' '$' '~' '<' '>' '?' '@' '{' '}'
299 %left '|' '&' '^'
300 %right '~' '!'
301
302 %destructor { zval_ptr_dtor(&$$); } TC_RAW TC_CONSTANT TC_NUMBER TC_STRING TC_WHITESPACE TC_LABEL TC_OFFSET TC_VARNAME BOOL_TRUE BOOL_FALSE NULL_NULL
303
304 %%
305
306 statement_list:
307 statement_list statement
308 | /* empty */
309 ;
310
311 statement:
312 TC_SECTION section_string_or_value ']' {
313 #if DEBUG_CFG_PARSER
314 printf("SECTION: [%s]\n", Z_STRVAL($2));
315 #endif
316 ZEND_INI_PARSER_CB(&$2, NULL, NULL, ZEND_INI_PARSER_SECTION, ZEND_INI_PARSER_ARG);
317 zend_string_release(Z_STR($2));
318 }
319 | TC_LABEL '=' string_or_value {
320 #if DEBUG_CFG_PARSER
321 printf("NORMAL: '%s' = '%s'\n", Z_STRVAL($1), Z_STRVAL($3));
322 #endif
323 ZEND_INI_PARSER_CB(&$1, &$3, NULL, ZEND_INI_PARSER_ENTRY, ZEND_INI_PARSER_ARG);
324 zend_string_release(Z_STR($1));
325 zval_ptr_dtor(&$3);
326 }
327 | TC_OFFSET option_offset ']' '=' string_or_value {
328 #if DEBUG_CFG_PARSER
329 printf("OFFSET: '%s'[%s] = '%s'\n", Z_STRVAL($1), Z_STRVAL($2), Z_STRVAL($5));
330 #endif
331 ZEND_INI_PARSER_CB(&$1, &$5, &$2, ZEND_INI_PARSER_POP_ENTRY, ZEND_INI_PARSER_ARG);
332 zend_string_release(Z_STR($1));
333 if (Z_TYPE($2) == IS_STRING) {
334 zend_string_release(Z_STR($2));
335 } else {
336 zval_dtor(&$2);
337 }
338 zval_ptr_dtor(&$5);
339 }
340 | TC_LABEL { ZEND_INI_PARSER_CB(&$1, NULL, NULL, ZEND_INI_PARSER_ENTRY, ZEND_INI_PARSER_ARG); zend_string_release(Z_STR($1)); }
341 | END_OF_LINE
342 ;
343
344 section_string_or_value:
345 var_string_list_section { $$ = $1; }
346 | /* empty */ { zend_ini_init_string(&$$); }
347 ;
348
349 string_or_value:
350 expr { $$ = $1; }
351 | BOOL_TRUE { $$ = $1; }
352 | BOOL_FALSE { $$ = $1; }
353 | NULL_NULL { $$ = $1; }
354 | END_OF_LINE { zend_ini_init_string(&$$); }
355 ;
356
357 option_offset:
358 var_string_list { $$ = $1; }
359 | /* empty */ { zend_ini_init_string(&$$); }
360 ;
361
362 encapsed_list:
363 encapsed_list cfg_var_ref { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
364 | encapsed_list TC_QUOTED_STRING { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
365 | /* empty */ { zend_ini_init_string(&$$); }
366 ;
367
368 var_string_list_section:
369 cfg_var_ref { $$ = $1; }
370 | constant_literal { $$ = $1; }
371 | '"' encapsed_list '"' { $$ = $2; }
372 | var_string_list_section cfg_var_ref { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
373 | var_string_list_section constant_literal { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
374 | var_string_list_section '"' encapsed_list '"' { zend_ini_add_string(&$$, &$1, &$3); zend_string_free(Z_STR($3)); }
375 ;
376
377 var_string_list:
378 cfg_var_ref { $$ = $1; }
379 | constant_string { $$ = $1; }
380 | '"' encapsed_list '"' { $$ = $2; }
381 | var_string_list cfg_var_ref { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
382 | var_string_list constant_string { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
383 | var_string_list '"' encapsed_list '"' { zend_ini_add_string(&$$, &$1, &$3); zend_string_free(Z_STR($3)); }
384 ;
385
386 expr:
387 var_string_list { $$ = $1; }
388 | expr '|' expr { zend_ini_do_op('|', &$$, &$1, &$3); }
389 | expr '&' expr { zend_ini_do_op('&', &$$, &$1, &$3); }
390 | expr '^' expr { zend_ini_do_op('^', &$$, &$1, &$3); }
391 | '~' expr { zend_ini_do_op('~', &$$, &$2, NULL); }
392 | '!' expr { zend_ini_do_op('!', &$$, &$2, NULL); }
393 | '(' expr ')' { $$ = $2; }
394 ;
395
396 cfg_var_ref:
397 TC_DOLLAR_CURLY TC_VARNAME '}' { zend_ini_get_var(&$$, &$2); zend_string_free(Z_STR($2)); }
398 ;
399
400 constant_literal:
401 TC_CONSTANT { $$ = $1; }
402 | TC_RAW { $$ = $1; /*printf("TC_RAW: '%s'\n", Z_STRVAL($1));*/ }
403 | TC_NUMBER { $$ = $1; /*printf("TC_NUMBER: '%s'\n", Z_STRVAL($1));*/ }
404 | TC_STRING { $$ = $1; /*printf("TC_STRING: '%s'\n", Z_STRVAL($1));*/ }
405 | TC_WHITESPACE { $$ = $1; /*printf("TC_WHITESPACE: '%s'\n", Z_STRVAL($1));*/ }
406 ;
407
408 constant_string:
409 TC_CONSTANT { zend_ini_get_constant(&$$, &$1); }
410 | TC_RAW { $$ = $1; /*printf("TC_RAW: '%s'\n", Z_STRVAL($1));*/ }
411 | TC_NUMBER { $$ = $1; /*printf("TC_NUMBER: '%s'\n", Z_STRVAL($1));*/ }
412 | TC_STRING { $$ = $1; /*printf("TC_STRING: '%s'\n", Z_STRVAL($1));*/ }
413 | TC_WHITESPACE { $$ = $1; /*printf("TC_WHITESPACE: '%s'\n", Z_STRVAL($1));*/ }
414 ;
415
416 /*
417 * Local variables:
418 * tab-width: 4
419 * c-basic-offset: 4
420 * indent-tabs-mode: t
421 * End:
422 */
423
