xref: /php-src/Zend/zend_ini.h (revision 6f63d4b2)
1 /*
2    +----------------------------------------------------------------------+
3    | Zend Engine                                                          |
4    +----------------------------------------------------------------------+
5    | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
6    +----------------------------------------------------------------------+
7    | This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt.                                |
11    | If you did not receive a copy of the Zend license and are unable to  |
12    | obtain it through the world-wide-web, please send a note to          |
13    | license@zend.com so we can mail you a copy immediately.              |
14    +----------------------------------------------------------------------+
15    | Author: Zeev Suraski <zeev@php.net>                                  |
16    +----------------------------------------------------------------------+
17 */
18 
19 #ifndef ZEND_INI_H
20 #define ZEND_INI_H
21 
22 #define ZEND_INI_USER	(1<<0)
23 #define ZEND_INI_PERDIR	(1<<1)
24 #define ZEND_INI_SYSTEM	(1<<2)
25 
26 #define ZEND_INI_ALL (ZEND_INI_USER|ZEND_INI_PERDIR|ZEND_INI_SYSTEM)
27 
28 #define ZEND_INI_MH(name) int name(zend_ini_entry *entry, zend_string *new_value, void *mh_arg1, void *mh_arg2, void *mh_arg3, int stage)
29 #define ZEND_INI_DISP(name) ZEND_COLD void name(zend_ini_entry *ini_entry, int type)
30 
31 typedef struct _zend_ini_entry_def {
32 	const char *name;
33 	ZEND_INI_MH((*on_modify));
34 	void *mh_arg1;
35 	void *mh_arg2;
36 	void *mh_arg3;
37 	const char *value;
38 	void (*displayer)(zend_ini_entry *ini_entry, int type);
39 
40 	uint32_t value_length;
41 	uint16_t name_length;
42 	uint8_t modifiable;
43 } zend_ini_entry_def;
44 
45 struct _zend_ini_entry {
46 	zend_string *name;
47 	ZEND_INI_MH((*on_modify));
48 	void *mh_arg1;
49 	void *mh_arg2;
50 	void *mh_arg3;
51 	zend_string *value;
52 	zend_string *orig_value;
53 	void (*displayer)(zend_ini_entry *ini_entry, int type);
54 
55 	int module_number;
56 
57 	uint8_t modifiable;
58 	uint8_t orig_modifiable;
59 	uint8_t modified;
60 
61 };
62 
63 BEGIN_EXTERN_C()
64 ZEND_API void zend_ini_startup(void);
65 ZEND_API void zend_ini_shutdown(void);
66 ZEND_API void zend_ini_global_shutdown(void);
67 ZEND_API void zend_ini_deactivate(void);
68 ZEND_API void zend_ini_dtor(HashTable *ini_directives);
69 
70 ZEND_API void zend_copy_ini_directives(void);
71 
72 ZEND_API void zend_ini_sort_entries(void);
73 
74 ZEND_API zend_result zend_register_ini_entries(const zend_ini_entry_def *ini_entry, int module_number);
75 ZEND_API zend_result zend_register_ini_entries_ex(const zend_ini_entry_def *ini_entry, int module_number, int module_type);
76 ZEND_API void zend_unregister_ini_entries(int module_number);
77 ZEND_API void zend_unregister_ini_entries_ex(int module_number, int module_type);
78 ZEND_API void zend_ini_refresh_caches(int stage);
79 ZEND_API zend_result zend_alter_ini_entry(zend_string *name, zend_string *new_value, int modify_type, int stage);
80 ZEND_API zend_result zend_alter_ini_entry_ex(zend_string *name, zend_string *new_value, int modify_type, int stage, bool force_change);
81 ZEND_API zend_result zend_alter_ini_entry_chars(zend_string *name, const char *value, size_t value_length, int modify_type, int stage);
82 ZEND_API zend_result zend_alter_ini_entry_chars_ex(zend_string *name, const char *value, size_t value_length, int modify_type, int stage, int force_change);
83 ZEND_API zend_result zend_restore_ini_entry(zend_string *name, int stage);
84 ZEND_API void display_ini_entries(zend_module_entry *module);
85 
86 ZEND_API zend_long zend_ini_long(const char *name, size_t name_length, int orig);
87 ZEND_API double zend_ini_double(const char *name, size_t name_length, int orig);
88 ZEND_API char *zend_ini_string(const char *name, size_t name_length, int orig);
89 ZEND_API char *zend_ini_string_ex(const char *name, size_t name_length, int orig, bool *exists);
90 ZEND_API zend_string *zend_ini_str(const char *name, size_t name_length, bool orig);
91 ZEND_API zend_string *zend_ini_str_ex(const char *name, size_t name_length, bool orig, bool *exists);
92 ZEND_API zend_string *zend_ini_get_value(zend_string *name);
93 ZEND_API bool zend_ini_parse_bool(zend_string *str);
94 
95 /**
96  * Parses an ini quantity
97  *
98  * The value parameter must be a string in the form
99  *
100  *     sign? digits ws* multiplier?
101  *
102  * with
103  *
104  *     sign: [+-]
105  *     digit: [0-9]
106  *     digits: digit+
107  *     ws: [ \t\n\r\v\f]
108  *     multiplier: [KMG]
109  *
110  * Leading and trailing whitespaces are ignored.
111  *
112  * If the string is empty or consists only of only whitespaces, 0 is returned.
113  *
114  * Digits is parsed as decimal unless the first digit is '0', in which case
115  * digits is parsed as octal.
116  *
117  * The multiplier is case-insensitive. K, M, and G multiply the quantity by
118  * 2**10, 2**20, and 2**30, respectively.
119  *
120  * For backwards compatibility, ill-formatted values are handled as follows:
121  * - No leading digits: value is treated as '0'
122  * - Invalid multiplier: multiplier is ignored
123  * - Invalid characters between digits and multiplier: invalid characters are
124  *   ignored
125  * - Integer overflow: The result of the overflow is returned
126  *
127  * In any of these cases an error string is stored in *errstr (caller must
128  * release it), otherwise *errstr is set to NULL.
129  */
130 ZEND_API zend_long zend_ini_parse_quantity(zend_string *value, zend_string **errstr);
131 
132 /**
133  * Unsigned variant of zend_ini_parse_quantity
134  */
135 ZEND_API zend_ulong zend_ini_parse_uquantity(zend_string *value, zend_string **errstr);
136 
137 ZEND_API zend_long zend_ini_parse_quantity_warn(zend_string *value, zend_string *setting);
138 
139 ZEND_API zend_ulong zend_ini_parse_uquantity_warn(zend_string *value, zend_string *setting);
140 
141 ZEND_API zend_result zend_ini_register_displayer(const char *name, uint32_t name_length, void (*displayer)(zend_ini_entry *ini_entry, int type));
142 
143 ZEND_API ZEND_INI_DISP(zend_ini_boolean_displayer_cb);
144 ZEND_API ZEND_INI_DISP(zend_ini_color_displayer_cb);
145 ZEND_API ZEND_INI_DISP(display_link_numbers);
146 END_EXTERN_C()
147 
148 #define ZEND_INI_BEGIN()		static const zend_ini_entry_def ini_entries[] = {
149 #define ZEND_INI_END()		{ NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0} };
150 
151 #define ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, arg1, arg2, arg3, displayer) \
152 	{ name, on_modify, arg1, arg2, arg3, default_value, displayer, sizeof(default_value)-1, sizeof(name)-1, modifiable },
153 
154 #define ZEND_INI_ENTRY3(name, default_value, modifiable, on_modify, arg1, arg2, arg3) \
155 	ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, arg1, arg2, arg3, NULL)
156 
157 #define ZEND_INI_ENTRY2_EX(name, default_value, modifiable, on_modify, arg1, arg2, displayer) \
158 	ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, arg1, arg2, NULL, displayer)
159 
160 #define ZEND_INI_ENTRY2(name, default_value, modifiable, on_modify, arg1, arg2) \
161 	ZEND_INI_ENTRY2_EX(name, default_value, modifiable, on_modify, arg1, arg2, NULL)
162 
163 #define ZEND_INI_ENTRY1_EX(name, default_value, modifiable, on_modify, arg1, displayer) \
164 	ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, arg1, NULL, NULL, displayer)
165 
166 #define ZEND_INI_ENTRY1(name, default_value, modifiable, on_modify, arg1) \
167 	ZEND_INI_ENTRY1_EX(name, default_value, modifiable, on_modify, arg1, NULL)
168 
169 #define ZEND_INI_ENTRY_EX(name, default_value, modifiable, on_modify, displayer) \
170 	ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, NULL, NULL, NULL, displayer)
171 
172 #define ZEND_INI_ENTRY(name, default_value, modifiable, on_modify) \
173 	ZEND_INI_ENTRY_EX(name, default_value, modifiable, on_modify, NULL)
174 
175 #ifdef ZTS
176 #define STD_ZEND_INI_ENTRY(name, default_value, modifiable, on_modify, property_name, struct_type, struct_ptr) \
177 	ZEND_INI_ENTRY2(name, default_value, modifiable, on_modify, (void *) XtOffsetOf(struct_type, property_name), (void *) &struct_ptr##_id)
178 #define STD_ZEND_INI_ENTRY_EX(name, default_value, modifiable, on_modify, property_name, struct_type, struct_ptr, displayer) \
179 	ZEND_INI_ENTRY2_EX(name, default_value, modifiable, on_modify, (void *) XtOffsetOf(struct_type, property_name), (void *) &struct_ptr##_id, displayer)
180 #define STD_ZEND_INI_BOOLEAN(name, default_value, modifiable, on_modify, property_name, struct_type, struct_ptr) \
181 	ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, (void *) XtOffsetOf(struct_type, property_name), (void *) &struct_ptr##_id, NULL, zend_ini_boolean_displayer_cb)
182 #else
183 #define STD_ZEND_INI_ENTRY(name, default_value, modifiable, on_modify, property_name, struct_type, struct_ptr) \
184 	ZEND_INI_ENTRY2(name, default_value, modifiable, on_modify, (void *) XtOffsetOf(struct_type, property_name), (void *) &struct_ptr)
185 #define STD_ZEND_INI_ENTRY_EX(name, default_value, modifiable, on_modify, property_name, struct_type, struct_ptr, displayer) \
186 	ZEND_INI_ENTRY2_EX(name, default_value, modifiable, on_modify, (void *) XtOffsetOf(struct_type, property_name), (void *) &struct_ptr, displayer)
187 #define STD_ZEND_INI_BOOLEAN(name, default_value, modifiable, on_modify, property_name, struct_type, struct_ptr) \
188 	ZEND_INI_ENTRY3_EX(name, default_value, modifiable, on_modify, (void *) XtOffsetOf(struct_type, property_name), (void *) &struct_ptr, NULL, zend_ini_boolean_displayer_cb)
189 #endif
190 
191 #define INI_INT(name) zend_ini_long((name), strlen(name), 0)
192 #define INI_FLT(name) zend_ini_double((name), strlen(name), 0)
193 #define INI_STR(name) zend_ini_string_ex((name), strlen(name), 0, NULL)
194 #define INI_BOOL(name) ((bool) INI_INT(name))
195 
196 #define INI_ORIG_INT(name)	zend_ini_long((name), strlen(name), 1)
197 #define INI_ORIG_FLT(name)	zend_ini_double((name), strlen(name), 1)
198 #define INI_ORIG_STR(name)	zend_ini_string((name), strlen(name), 1)
199 #define INI_ORIG_BOOL(name) ((bool) INI_ORIG_INT(name))
200 
201 #define REGISTER_INI_ENTRIES() zend_register_ini_entries_ex(ini_entries, module_number, type)
202 #define UNREGISTER_INI_ENTRIES() zend_unregister_ini_entries_ex(module_number, type)
203 #define DISPLAY_INI_ENTRIES() display_ini_entries(zend_module)
204 
205 #define REGISTER_INI_DISPLAYER(name, displayer) zend_ini_register_displayer((name), strlen(name), displayer)
206 #define REGISTER_INI_BOOLEAN(name) REGISTER_INI_DISPLAYER(name, zend_ini_boolean_displayer_cb)
207 
208 /* Standard message handlers */
209 BEGIN_EXTERN_C()
210 ZEND_API ZEND_INI_MH(OnUpdateBool);
211 ZEND_API ZEND_INI_MH(OnUpdateLong);
212 ZEND_API ZEND_INI_MH(OnUpdateLongGEZero);
213 ZEND_API ZEND_INI_MH(OnUpdateReal);
214 /* char* versions */
215 ZEND_API ZEND_INI_MH(OnUpdateString);
216 ZEND_API ZEND_INI_MH(OnUpdateStringUnempty);
217 /* zend_string* versions */
218 ZEND_API ZEND_INI_MH(OnUpdateStr);
219 ZEND_API ZEND_INI_MH(OnUpdateStrNotEmpty);
220 END_EXTERN_C()
221 
222 #define ZEND_INI_DISPLAY_ORIG	1
223 #define ZEND_INI_DISPLAY_ACTIVE	2
224 
225 #define ZEND_INI_STAGE_STARTUP		(1<<0)
226 #define ZEND_INI_STAGE_SHUTDOWN		(1<<1)
227 #define ZEND_INI_STAGE_ACTIVATE		(1<<2)
228 #define ZEND_INI_STAGE_DEACTIVATE	(1<<3)
229 #define ZEND_INI_STAGE_RUNTIME		(1<<4)
230 #define ZEND_INI_STAGE_HTACCESS		(1<<5)
231 
232 #define ZEND_INI_STAGE_IN_REQUEST   (ZEND_INI_STAGE_ACTIVATE|ZEND_INI_STAGE_DEACTIVATE|ZEND_INI_STAGE_RUNTIME|ZEND_INI_STAGE_HTACCESS)
233 
234 /* INI parsing engine */
235 typedef void (*zend_ini_parser_cb_t)(zval *arg1, zval *arg2, zval *arg3, int callback_type, void *arg);
236 BEGIN_EXTERN_C()
237 ZEND_API zend_result zend_parse_ini_file(zend_file_handle *fh, bool unbuffered_errors, int scanner_mode, zend_ini_parser_cb_t ini_parser_cb, void *arg);
238 ZEND_API zend_result zend_parse_ini_string(const char *str, bool unbuffered_errors, int scanner_mode, zend_ini_parser_cb_t ini_parser_cb, void *arg);
239 END_EXTERN_C()
240 
241 /* INI entries */
242 #define ZEND_INI_PARSER_ENTRY     1 /* Normal entry: foo = bar */
243 #define ZEND_INI_PARSER_SECTION	  2 /* Section: [foobar] */
244 #define ZEND_INI_PARSER_POP_ENTRY 3 /* Offset entry: foo[] = bar */
245 
246 typedef struct _zend_ini_parser_param {
247 	zend_ini_parser_cb_t ini_parser_cb;
248 	void *arg;
249 } zend_ini_parser_param;
250 
251 #ifndef ZTS
252 # define ZEND_INI_GET_BASE() ((char *) mh_arg2)
253 #else
254 # define ZEND_INI_GET_BASE() ((char *) ts_resource(*((int *) mh_arg2)))
255 #endif
256 
257 #define ZEND_INI_GET_ADDR() (ZEND_INI_GET_BASE() + (size_t) mh_arg1)
258 
259 #endif /* ZEND_INI_H */
260