1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1998-2018 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 |
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 | Authors: Masaki Fujimoto <fujimoto@php.net> |
16 | Rui Hirokawa <hirokawa@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 /* $Id$ */
21
22 #include "zend.h"
23 #include "zend_compile.h"
24 #include "zend_operators.h"
25 #include "zend_multibyte.h"
26 #include "zend_ini.h"
27
dummy_encoding_fetcher(const char * encoding_name)28 static const zend_encoding *dummy_encoding_fetcher(const char *encoding_name)
29 {
30 return NULL;
31 }
32
dummy_encoding_name_getter(const zend_encoding * encoding)33 static const char *dummy_encoding_name_getter(const zend_encoding *encoding)
34 {
35 return (const char*)encoding;
36 }
37
dummy_encoding_lexer_compatibility_checker(const zend_encoding * encoding)38 static int dummy_encoding_lexer_compatibility_checker(const zend_encoding *encoding)
39 {
40 return 0;
41 }
42
dummy_encoding_detector(const unsigned char * string,size_t length,const zend_encoding ** list,size_t list_size)43 static const zend_encoding *dummy_encoding_detector(const unsigned char *string, size_t length, const zend_encoding **list, size_t list_size)
44 {
45 return NULL;
46 }
47
dummy_encoding_converter(unsigned char ** to,size_t * to_length,const unsigned char * from,size_t from_length,const zend_encoding * encoding_to,const zend_encoding * encoding_from)48 static size_t dummy_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from)
49 {
50 return (size_t)-1;
51 }
52
dummy_encoding_list_parser(const char * encoding_list,size_t encoding_list_len,const zend_encoding *** return_list,size_t * return_size,int persistent)53 static int dummy_encoding_list_parser(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, int persistent)
54 {
55 *return_list = pemalloc(0, persistent);
56 *return_size = 0;
57 return SUCCESS;
58 }
59
dummy_internal_encoding_getter(void)60 static const zend_encoding *dummy_internal_encoding_getter(void)
61 {
62 return NULL;
63 }
64
dummy_internal_encoding_setter(const zend_encoding * encoding)65 static int dummy_internal_encoding_setter(const zend_encoding *encoding)
66 {
67 return FAILURE;
68 }
69
70 static zend_multibyte_functions multibyte_functions_dummy;
71 static zend_multibyte_functions multibyte_functions = {
72 NULL,
73 dummy_encoding_fetcher,
74 dummy_encoding_name_getter,
75 dummy_encoding_lexer_compatibility_checker,
76 dummy_encoding_detector,
77 dummy_encoding_converter,
78 dummy_encoding_list_parser,
79 dummy_internal_encoding_getter,
80 dummy_internal_encoding_setter
81 };
82
83 ZEND_API const zend_encoding *zend_multibyte_encoding_utf32be = (const zend_encoding*)"UTF-32BE";
84 ZEND_API const zend_encoding *zend_multibyte_encoding_utf32le = (const zend_encoding*)"UTF-32LE";
85 ZEND_API const zend_encoding *zend_multibyte_encoding_utf16be = (const zend_encoding*)"UTF-16BE";
86 ZEND_API const zend_encoding *zend_multibyte_encoding_utf16le = (const zend_encoding*)"UTF-32LE";
87 ZEND_API const zend_encoding *zend_multibyte_encoding_utf8 = (const zend_encoding*)"UTF-8";
88
zend_multibyte_set_functions(const zend_multibyte_functions * functions)89 ZEND_API int zend_multibyte_set_functions(const zend_multibyte_functions *functions)
90 {
91 zend_multibyte_encoding_utf32be = functions->encoding_fetcher("UTF-32BE");
92 if (!zend_multibyte_encoding_utf32be) {
93 return FAILURE;
94 }
95 zend_multibyte_encoding_utf32le = functions->encoding_fetcher("UTF-32LE");
96 if (!zend_multibyte_encoding_utf32le) {
97 return FAILURE;
98 }
99 zend_multibyte_encoding_utf16be = functions->encoding_fetcher("UTF-16BE");
100 if (!zend_multibyte_encoding_utf16be) {
101 return FAILURE;
102 }
103 zend_multibyte_encoding_utf16le = functions->encoding_fetcher("UTF-16LE");
104 if (!zend_multibyte_encoding_utf16le) {
105 return FAILURE;
106 }
107 zend_multibyte_encoding_utf8 = functions->encoding_fetcher("UTF-8");
108 if (!zend_multibyte_encoding_utf8) {
109 return FAILURE;
110 }
111
112 multibyte_functions_dummy = multibyte_functions;
113 multibyte_functions = *functions;
114
115 /* As zend_multibyte_set_functions() gets called after ini settings were
116 * populated, we need to reinitialize script_encoding here.
117 */
118 {
119 const char *value = zend_ini_string("zend.script_encoding", sizeof("zend.script_encoding") - 1, 0);
120 zend_multibyte_set_script_encoding_by_string(value, strlen(value));
121 }
122 return SUCCESS;
123 }
124
zend_multibyte_restore_functions(void)125 ZEND_API void zend_multibyte_restore_functions(void)
126 {
127 multibyte_functions = multibyte_functions_dummy;
128 }
129
zend_multibyte_get_functions(void)130 ZEND_API const zend_multibyte_functions *zend_multibyte_get_functions(void)
131 {
132 return multibyte_functions.provider_name ? &multibyte_functions: NULL;
133 }
134
zend_multibyte_fetch_encoding(const char * name)135 ZEND_API const zend_encoding *zend_multibyte_fetch_encoding(const char *name)
136 {
137 return multibyte_functions.encoding_fetcher(name);
138 }
139
zend_multibyte_get_encoding_name(const zend_encoding * encoding)140 ZEND_API const char *zend_multibyte_get_encoding_name(const zend_encoding *encoding)
141 {
142 return multibyte_functions.encoding_name_getter(encoding);
143 }
144
zend_multibyte_check_lexer_compatibility(const zend_encoding * encoding)145 ZEND_API int zend_multibyte_check_lexer_compatibility(const zend_encoding *encoding)
146 {
147 return multibyte_functions.lexer_compatibility_checker(encoding);
148 }
149
zend_multibyte_encoding_detector(const unsigned char * string,size_t length,const zend_encoding ** list,size_t list_size)150 ZEND_API const zend_encoding *zend_multibyte_encoding_detector(const unsigned char *string, size_t length, const zend_encoding **list, size_t list_size)
151 {
152 return multibyte_functions.encoding_detector(string, length, list, list_size);
153 }
154
zend_multibyte_encoding_converter(unsigned char ** to,size_t * to_length,const unsigned char * from,size_t from_length,const zend_encoding * encoding_to,const zend_encoding * encoding_from)155 ZEND_API size_t zend_multibyte_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from)
156 {
157 return multibyte_functions.encoding_converter(to, to_length, from, from_length, encoding_to, encoding_from);
158 }
159
zend_multibyte_parse_encoding_list(const char * encoding_list,size_t encoding_list_len,const zend_encoding *** return_list,size_t * return_size,int persistent)160 ZEND_API int zend_multibyte_parse_encoding_list(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, int persistent)
161 {
162 return multibyte_functions.encoding_list_parser(encoding_list, encoding_list_len, return_list, return_size, persistent);
163 }
164
zend_multibyte_get_internal_encoding(void)165 ZEND_API const zend_encoding *zend_multibyte_get_internal_encoding(void)
166 {
167 return multibyte_functions.internal_encoding_getter();
168 }
169
zend_multibyte_get_script_encoding(void)170 ZEND_API const zend_encoding *zend_multibyte_get_script_encoding(void)
171 {
172 return LANG_SCNG(script_encoding);
173 }
174
zend_multibyte_set_script_encoding(const zend_encoding ** encoding_list,size_t encoding_list_size)175 ZEND_API int zend_multibyte_set_script_encoding(const zend_encoding **encoding_list, size_t encoding_list_size)
176 {
177 if (CG(script_encoding_list)) {
178 free((char*)CG(script_encoding_list));
179 }
180 CG(script_encoding_list) = encoding_list;
181 CG(script_encoding_list_size) = encoding_list_size;
182 return SUCCESS;
183 }
184
zend_multibyte_set_internal_encoding(const zend_encoding * encoding)185 ZEND_API int zend_multibyte_set_internal_encoding(const zend_encoding *encoding)
186 {
187 return multibyte_functions.internal_encoding_setter(encoding);
188 }
189
zend_multibyte_set_script_encoding_by_string(const char * new_value,size_t new_value_length)190 ZEND_API int zend_multibyte_set_script_encoding_by_string(const char *new_value, size_t new_value_length)
191 {
192 const zend_encoding **list = 0;
193 size_t size = 0;
194
195 if (!new_value) {
196 zend_multibyte_set_script_encoding(NULL, 0);
197 return SUCCESS;
198 }
199
200 if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length, &list, &size, 1)) {
201 return FAILURE;
202 }
203
204 if (size == 0) {
205 pefree((void*)list, 1);
206 return FAILURE;
207 }
208
209 if (FAILURE == zend_multibyte_set_script_encoding(list, size)) {
210 return FAILURE;
211 }
212
213 return SUCCESS;
214 }
215
216 /*
217 * Local variables:
218 * tab-width: 4
219 * c-basic-offset: 4
220 * End:
221 * vim600: sw=4 ts=4 fdm=marker
222 * vim<600: sw=4 ts=4
223 */
224
