xref: /PHP-5.5/main/SAPI.h (revision 73c1be26)
1 /*
2    +----------------------------------------------------------------------+
3    | PHP Version 5                                                        |
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    | Author:  Zeev Suraski <zeev@zend.com>                                |
16    +----------------------------------------------------------------------+
17 */
18 
19 /* $Id$ */
20 
21 #ifndef SAPI_H
22 #define SAPI_H
23 
24 #include "zend.h"
25 #include "zend_API.h"
26 #include "zend_llist.h"
27 #include "zend_operators.h"
28 #ifdef PHP_WIN32
29 #include "win95nt.h"
30 #endif
31 #include <sys/stat.h>
32 
33 #define SAPI_OPTION_NO_CHDIR 1
34 
35 #define SAPI_POST_BLOCK_SIZE 4000
36 
37 #ifdef PHP_WIN32
38 #	ifdef SAPI_EXPORTS
39 #		define SAPI_API __declspec(dllexport)
40 #	else
41 #		define SAPI_API __declspec(dllimport)
42 #	endif
43 #elif defined(__GNUC__) && __GNUC__ >= 4
44 #	define SAPI_API __attribute__ ((visibility("default")))
45 #else
46 #	define SAPI_API
47 #endif
48 
49 #undef shutdown
50 
51 typedef struct {
52 	char *header;
53 	uint header_len;
54 } sapi_header_struct;
55 
56 
57 typedef struct {
58 	zend_llist headers;
59 	int http_response_code;
60 	unsigned char send_default_content_type;
61 	char *mimetype;
62 	char *http_status_line;
63 } sapi_headers_struct;
64 
65 
66 typedef struct _sapi_post_entry sapi_post_entry;
67 typedef struct _sapi_module_struct sapi_module_struct;
68 
69 BEGIN_EXTERN_C()
70 extern SAPI_API sapi_module_struct sapi_module;  /* true global */
71 END_EXTERN_C()
72 
73 /* Some values in this structure needs to be filled in before
74  * calling sapi_activate(). We WILL change the `char *' entries,
75  * so make sure that you allocate a separate buffer for them
76  * and that you free them after sapi_deactivate().
77  */
78 
79 typedef struct {
80 	const char *request_method;
81 	char *query_string;
82 	char *post_data, *raw_post_data;
83 	char *cookie_data;
84 	long content_length;
85 	uint post_data_length, raw_post_data_length;
86 
87 	char *path_translated;
88 	char *request_uri;
89 
90 	const char *content_type;
91 
92 	zend_bool headers_only;
93 	zend_bool no_headers;
94 	zend_bool headers_read;
95 
96 	sapi_post_entry *post_entry;
97 
98 	char *content_type_dup;
99 
100 	/* for HTTP authentication */
101 	char *auth_user;
102 	char *auth_password;
103 	char *auth_digest;
104 
105 	/* this is necessary for the CGI SAPI module */
106 	char *argv0;
107 
108 	char *current_user;
109 	int current_user_length;
110 
111 	/* this is necessary for CLI module */
112 	int argc;
113 	char **argv;
114 	int proto_num;
115 } sapi_request_info;
116 
117 
118 typedef struct _sapi_globals_struct {
119 	void *server_context;
120 	sapi_request_info request_info;
121 	sapi_headers_struct sapi_headers;
122 	int read_post_bytes;
123 	unsigned char headers_sent;
124 	struct stat global_stat;
125 	char *default_mimetype;
126 	char *default_charset;
127 	HashTable *rfc1867_uploaded_files;
128 	long post_max_size;
129 	int options;
130 	zend_bool sapi_started;
131 	double global_request_time;
132 	HashTable known_post_content_types;
133 	zval *callback_func;
134 	zend_fcall_info_cache fci_cache;
135 	zend_bool callback_run;
136 } sapi_globals_struct;
137 
138 
139 BEGIN_EXTERN_C()
140 #ifdef ZTS
141 # define SG(v) TSRMG(sapi_globals_id, sapi_globals_struct *, v)
142 SAPI_API extern int sapi_globals_id;
143 #else
144 # define SG(v) (sapi_globals.v)
145 extern SAPI_API sapi_globals_struct sapi_globals;
146 #endif
147 
148 SAPI_API void sapi_startup(sapi_module_struct *sf);
149 SAPI_API void sapi_shutdown(void);
150 SAPI_API void sapi_activate(TSRMLS_D);
151 SAPI_API void sapi_deactivate(TSRMLS_D);
152 SAPI_API void sapi_initialize_empty_request(TSRMLS_D);
153 END_EXTERN_C()
154 
155 /*
156  * This is the preferred and maintained API for
157  * operating on HTTP headers.
158  */
159 
160 /*
161  * Always specify a sapi_header_line this way:
162  *
163  *     sapi_header_line ctr = {0};
164  */
165 
166 typedef struct {
167 	char *line; /* If you allocated this, you need to free it yourself */
168 	uint line_len;
169 	long response_code; /* long due to zend_parse_parameters compatibility */
170 } sapi_header_line;
171 
172 typedef enum {					/* Parameter: 			*/
173 	SAPI_HEADER_REPLACE,		/* sapi_header_line* 	*/
174 	SAPI_HEADER_ADD,			/* sapi_header_line* 	*/
175 	SAPI_HEADER_DELETE,			/* sapi_header_line* 	*/
176 	SAPI_HEADER_DELETE_ALL,		/* void					*/
177 	SAPI_HEADER_SET_STATUS		/* int 					*/
178 } sapi_header_op_enum;
179 
180 BEGIN_EXTERN_C()
181 SAPI_API int sapi_header_op(sapi_header_op_enum op, void *arg TSRMLS_DC);
182 
183 /* Deprecated functions. Use sapi_header_op instead. */
184 SAPI_API int sapi_add_header_ex(char *header_line, uint header_line_len, zend_bool duplicate, zend_bool replace TSRMLS_DC);
185 #define sapi_add_header(a, b, c) sapi_add_header_ex((a),(b),(c),1 TSRMLS_CC)
186 
187 
188 SAPI_API int sapi_send_headers(TSRMLS_D);
189 SAPI_API void sapi_free_header(sapi_header_struct *sapi_header);
190 SAPI_API void sapi_handle_post(void *arg TSRMLS_DC);
191 
192 SAPI_API int sapi_register_post_entries(sapi_post_entry *post_entry TSRMLS_DC);
193 SAPI_API int sapi_register_post_entry(sapi_post_entry *post_entry TSRMLS_DC);
194 SAPI_API void sapi_unregister_post_entry(sapi_post_entry *post_entry TSRMLS_DC);
195 SAPI_API int sapi_register_default_post_reader(void (*default_post_reader)(TSRMLS_D) TSRMLS_DC);
196 SAPI_API int sapi_register_treat_data(void (*treat_data)(int arg, char *str, zval *destArray TSRMLS_DC) TSRMLS_DC);
197 SAPI_API int sapi_register_input_filter(unsigned int (*input_filter)(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC), unsigned int (*input_filter_init)(TSRMLS_D) TSRMLS_DC);
198 
199 SAPI_API int sapi_flush(TSRMLS_D);
200 SAPI_API struct stat *sapi_get_stat(TSRMLS_D);
201 SAPI_API char *sapi_getenv(char *name, size_t name_len TSRMLS_DC);
202 
203 SAPI_API char *sapi_get_default_content_type(TSRMLS_D);
204 SAPI_API void sapi_get_default_content_type_header(sapi_header_struct *default_header TSRMLS_DC);
205 SAPI_API size_t sapi_apply_default_charset(char **mimetype, size_t len TSRMLS_DC);
206 SAPI_API void sapi_activate_headers_only(TSRMLS_D);
207 
208 SAPI_API int sapi_get_fd(int *fd TSRMLS_DC);
209 SAPI_API int sapi_force_http_10(TSRMLS_D);
210 
211 SAPI_API int sapi_get_target_uid(uid_t * TSRMLS_DC);
212 SAPI_API int sapi_get_target_gid(gid_t * TSRMLS_DC);
213 SAPI_API double sapi_get_request_time(TSRMLS_D);
214 SAPI_API void sapi_terminate_process(TSRMLS_D);
215 END_EXTERN_C()
216 
217 struct _sapi_module_struct {
218 	char *name;
219 	char *pretty_name;
220 
221 	int (*startup)(struct _sapi_module_struct *sapi_module);
222 	int (*shutdown)(struct _sapi_module_struct *sapi_module);
223 
224 	int (*activate)(TSRMLS_D);
225 	int (*deactivate)(TSRMLS_D);
226 
227 	int (*ub_write)(const char *str, unsigned int str_length TSRMLS_DC);
228 	void (*flush)(void *server_context);
229 	struct stat *(*get_stat)(TSRMLS_D);
230 	char *(*getenv)(char *name, size_t name_len TSRMLS_DC);
231 
232 	void (*sapi_error)(int type, const char *error_msg, ...);
233 
234 	int (*header_handler)(sapi_header_struct *sapi_header, sapi_header_op_enum op, sapi_headers_struct *sapi_headers TSRMLS_DC);
235 	int (*send_headers)(sapi_headers_struct *sapi_headers TSRMLS_DC);
236 	void (*send_header)(sapi_header_struct *sapi_header, void *server_context TSRMLS_DC);
237 
238 	int (*read_post)(char *buffer, uint count_bytes TSRMLS_DC);
239 	char *(*read_cookies)(TSRMLS_D);
240 
241 	void (*register_server_variables)(zval *track_vars_array TSRMLS_DC);
242 	void (*log_message)(char *message TSRMLS_DC);
243 	double (*get_request_time)(TSRMLS_D);
244 	void (*terminate_process)(TSRMLS_D);
245 
246 	char *php_ini_path_override;
247 
248 	void (*block_interruptions)(void);
249 	void (*unblock_interruptions)(void);
250 
251 	void (*default_post_reader)(TSRMLS_D);
252 	void (*treat_data)(int arg, char *str, zval *destArray TSRMLS_DC);
253 	char *executable_location;
254 
255 	int php_ini_ignore;
256 	int php_ini_ignore_cwd; /* don't look for php.ini in the current directory */
257 
258 	int (*get_fd)(int *fd TSRMLS_DC);
259 
260 	int (*force_http_10)(TSRMLS_D);
261 
262 	int (*get_target_uid)(uid_t * TSRMLS_DC);
263 	int (*get_target_gid)(gid_t * TSRMLS_DC);
264 
265 	unsigned int (*input_filter)(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC);
266 
267 	void (*ini_defaults)(HashTable *configuration_hash);
268 	int phpinfo_as_text;
269 
270 	char *ini_entries;
271 	const zend_function_entry *additional_functions;
272 	unsigned int (*input_filter_init)(TSRMLS_D);
273 };
274 
275 
276 struct _sapi_post_entry {
277 	char *content_type;
278 	uint content_type_len;
279 	void (*post_reader)(TSRMLS_D);
280 	void (*post_handler)(char *content_type_dup, void *arg TSRMLS_DC);
281 };
282 
283 /* header_handler() constants */
284 #define SAPI_HEADER_ADD			(1<<0)
285 
286 
287 #define SAPI_HEADER_SENT_SUCCESSFULLY	1
288 #define SAPI_HEADER_DO_SEND				2
289 #define SAPI_HEADER_SEND_FAILED			3
290 
291 #define SAPI_DEFAULT_MIMETYPE		"text/html"
292 #define SAPI_DEFAULT_CHARSET		""
293 #define SAPI_PHP_VERSION_HEADER		"X-Powered-By: PHP/" PHP_VERSION
294 
295 #define SAPI_POST_READER_FUNC(post_reader) void post_reader(TSRMLS_D)
296 #define SAPI_POST_HANDLER_FUNC(post_handler) void post_handler(char *content_type_dup, void *arg TSRMLS_DC)
297 
298 #define SAPI_TREAT_DATA_FUNC(treat_data) void treat_data(int arg, char *str, zval* destArray TSRMLS_DC)
299 #define SAPI_INPUT_FILTER_FUNC(input_filter) unsigned int input_filter(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC)
300 
301 BEGIN_EXTERN_C()
302 SAPI_API SAPI_POST_READER_FUNC(sapi_read_standard_form_data);
303 SAPI_API SAPI_POST_READER_FUNC(php_default_post_reader);
304 SAPI_API SAPI_TREAT_DATA_FUNC(php_default_treat_data);
305 SAPI_API SAPI_INPUT_FILTER_FUNC(php_default_input_filter);
306 END_EXTERN_C()
307 
308 #define STANDARD_SAPI_MODULE_PROPERTIES
309 
310 #endif /* SAPI_H */
311 
312 /*
313  * Local variables:
314  * tab-width: 4
315  * c-basic-offset: 4
316  * End:
317  */
318