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: Michael Wallner <mike@php.net> | 16 +----------------------------------------------------------------------+ 17 */ 18 19 /* $Id$ */ 20 21 #ifndef PHP_OUTPUT_H 22 #define PHP_OUTPUT_H 23 24 #define PHP_OUTPUT_NEWAPI 1 25 26 /* handler ops */ 27 #define PHP_OUTPUT_HANDLER_WRITE 0x00 /* standard passthru */ 28 #define PHP_OUTPUT_HANDLER_START 0x01 /* start */ 29 #define PHP_OUTPUT_HANDLER_CLEAN 0x02 /* restart */ 30 #define PHP_OUTPUT_HANDLER_FLUSH 0x04 /* pass along as much as possible */ 31 #define PHP_OUTPUT_HANDLER_FINAL 0x08 /* finalize */ 32 #define PHP_OUTPUT_HANDLER_CONT PHP_OUTPUT_HANDLER_WRITE 33 #define PHP_OUTPUT_HANDLER_END PHP_OUTPUT_HANDLER_FINAL 34 35 /* handler types */ 36 #define PHP_OUTPUT_HANDLER_INTERNAL 0x0000 37 #define PHP_OUTPUT_HANDLER_USER 0x0001 38 39 /* handler ability flags */ 40 #define PHP_OUTPUT_HANDLER_CLEANABLE 0x0010 41 #define PHP_OUTPUT_HANDLER_FLUSHABLE 0x0020 42 #define PHP_OUTPUT_HANDLER_REMOVABLE 0x0040 43 #define PHP_OUTPUT_HANDLER_STDFLAGS 0x0070 44 45 /* handler status flags */ 46 #define PHP_OUTPUT_HANDLER_STARTED 0x1000 47 #define PHP_OUTPUT_HANDLER_DISABLED 0x2000 48 #define PHP_OUTPUT_HANDLER_PROCESSED 0x4000 49 50 /* handler op return values */ 51 typedef enum _php_output_handler_status_t { 52 PHP_OUTPUT_HANDLER_FAILURE, 53 PHP_OUTPUT_HANDLER_SUCCESS, 54 PHP_OUTPUT_HANDLER_NO_DATA 55 } php_output_handler_status_t; 56 57 /* php_output_stack_pop() flags */ 58 #define PHP_OUTPUT_POP_TRY 0x000 59 #define PHP_OUTPUT_POP_FORCE 0x001 60 #define PHP_OUTPUT_POP_DISCARD 0x010 61 #define PHP_OUTPUT_POP_SILENT 0x100 62 63 /* real global flags */ 64 #define PHP_OUTPUT_IMPLICITFLUSH 0x01 65 #define PHP_OUTPUT_DISABLED 0x02 66 #define PHP_OUTPUT_WRITTEN 0x04 67 #define PHP_OUTPUT_SENT 0x08 68 /* supplementary flags for php_output_get_status() */ 69 #define PHP_OUTPUT_ACTIVE 0x10 70 #define PHP_OUTPUT_LOCKED 0x20 71 /* output layer is ready to use */ 72 #define PHP_OUTPUT_ACTIVATED 0x100000 73 74 /* handler hooks */ 75 typedef enum _php_output_handler_hook_t { 76 PHP_OUTPUT_HANDLER_HOOK_GET_OPAQ, 77 PHP_OUTPUT_HANDLER_HOOK_GET_FLAGS, 78 PHP_OUTPUT_HANDLER_HOOK_GET_LEVEL, 79 PHP_OUTPUT_HANDLER_HOOK_IMMUTABLE, 80 PHP_OUTPUT_HANDLER_HOOK_DISABLE, 81 /* unused */ 82 PHP_OUTPUT_HANDLER_HOOK_LAST 83 } php_output_handler_hook_t; 84 85 #define PHP_OUTPUT_HANDLER_INITBUF_SIZE(s) \ 86 ( ((s) > 1) ? \ 87 (s) + PHP_OUTPUT_HANDLER_ALIGNTO_SIZE - ((s) % (PHP_OUTPUT_HANDLER_ALIGNTO_SIZE)) : \ 88 PHP_OUTPUT_HANDLER_DEFAULT_SIZE \ 89 ) 90 #define PHP_OUTPUT_HANDLER_ALIGNTO_SIZE 0x1000 91 #define PHP_OUTPUT_HANDLER_DEFAULT_SIZE 0x4000 92 93 typedef struct _php_output_buffer { 94 char *data; 95 size_t size; 96 size_t used; 97 uint free:1; 98 uint _res:31; 99 } php_output_buffer; 100 101 typedef struct _php_output_context { 102 int op; 103 php_output_buffer in; 104 php_output_buffer out; 105 #ifdef ZTS 106 void ***tsrm_ls; 107 #endif 108 } php_output_context; 109 110 #define PHP_OUTPUT_TSRMLS(ctx) TSRMLS_FETCH_FROM_CTX((ctx)->tsrm_ls) 111 112 /* old-style, stateless callback */ 113 typedef void (*php_output_handler_func_t)(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC); 114 /* new-style, opaque context callback */ 115 typedef int (*php_output_handler_context_func_t)(void **handler_context, php_output_context *output_context); 116 /* output handler context dtor */ 117 typedef void (*php_output_handler_context_dtor_t)(void *opaq TSRMLS_DC); 118 /* conflict check callback */ 119 typedef int (*php_output_handler_conflict_check_t)(const char *handler_name, size_t handler_name_len TSRMLS_DC); 120 /* ctor for aliases */ 121 typedef struct _php_output_handler *(*php_output_handler_alias_ctor_t)(const char *handler_name, size_t handler_name_len, size_t chunk_size, int flags TSRMLS_DC); 122 123 typedef struct _php_output_handler_user_func_t { 124 zend_fcall_info fci; 125 zend_fcall_info_cache fcc; 126 zval *zoh; 127 } php_output_handler_user_func_t; 128 129 typedef struct _php_output_handler { 130 char *name; 131 size_t name_len; 132 int flags; 133 int level; 134 size_t size; 135 php_output_buffer buffer; 136 137 void *opaq; 138 void (*dtor)(void *opaq TSRMLS_DC); 139 140 union { 141 php_output_handler_user_func_t *user; 142 php_output_handler_context_func_t internal; 143 } func; 144 } php_output_handler; 145 146 ZEND_BEGIN_MODULE_GLOBALS(output) 147 int flags; 148 zend_stack handlers; 149 php_output_handler *active; 150 php_output_handler *running; 151 const char *output_start_filename; 152 int output_start_lineno; 153 ZEND_END_MODULE_GLOBALS(output) 154 155 PHPAPI ZEND_EXTERN_MODULE_GLOBALS(output); 156 157 /* there should not be a need to use OG() from outside of output.c */ 158 #ifdef ZTS 159 # define OG(v) TSRMG(output_globals_id, zend_output_globals *, v) 160 #else 161 # define OG(v) (output_globals.v) 162 #endif 163 164 /* convenience macros */ 165 #define PHPWRITE(str, str_len) php_output_write((str), (str_len) TSRMLS_CC) 166 #define PHPWRITE_H(str, str_len) php_output_write_unbuffered((str), (str_len) TSRMLS_CC) 167 168 #define PUTC(c) (php_output_write(&(c), 1 TSRMLS_CC), (c)) 169 #define PUTC_H(c) (php_output_write_unbuffered(&(c), 1 TSRMLS_CC), (c)) 170 171 #define PUTS(str) do { \ 172 const char *__str = (str); \ 173 php_output_write(__str, strlen(__str) TSRMLS_CC); \ 174 } while (0) 175 #define PUTS_H(str) do { \ 176 const char *__str = (str); \ 177 php_output_write_unbuffered(__str, strlen(__str) TSRMLS_CC); \ 178 } while (0) 179 180 181 BEGIN_EXTERN_C() 182 183 extern const char php_output_default_handler_name[sizeof("default output handler")]; 184 extern const char php_output_devnull_handler_name[sizeof("null output handler")]; 185 186 #define php_output_tearup() \ 187 php_output_startup(); \ 188 php_output_activate(TSRMLS_C) 189 #define php_output_teardown() \ 190 php_output_end_all(TSRMLS_C); \ 191 php_output_deactivate(TSRMLS_C); \ 192 php_output_shutdown() 193 194 /* MINIT */ 195 PHPAPI void php_output_startup(void); 196 /* MSHUTDOWN */ 197 PHPAPI void php_output_shutdown(void); 198 199 PHPAPI void php_output_register_constants(TSRMLS_D); 200 201 /* RINIT */ 202 PHPAPI int php_output_activate(TSRMLS_D); 203 /* RSHUTDOWN */ 204 PHPAPI void php_output_deactivate(TSRMLS_D); 205 206 PHPAPI void php_output_set_status(int status TSRMLS_DC); 207 PHPAPI int php_output_get_status(TSRMLS_D); 208 PHPAPI void php_output_set_implicit_flush(int flush TSRMLS_DC); 209 PHPAPI const char *php_output_get_start_filename(TSRMLS_D); 210 PHPAPI int php_output_get_start_lineno(TSRMLS_D); 211 212 PHPAPI int php_output_write_unbuffered(const char *str, size_t len TSRMLS_DC); 213 PHPAPI int php_output_write(const char *str, size_t len TSRMLS_DC); 214 215 PHPAPI int php_output_flush(TSRMLS_D); 216 PHPAPI void php_output_flush_all(TSRMLS_D); 217 PHPAPI int php_output_clean(TSRMLS_D); 218 PHPAPI void php_output_clean_all(TSRMLS_D); 219 PHPAPI int php_output_end(TSRMLS_D); 220 PHPAPI void php_output_end_all(TSRMLS_D); 221 PHPAPI int php_output_discard(TSRMLS_D); 222 PHPAPI void php_output_discard_all(TSRMLS_D); 223 224 PHPAPI int php_output_get_contents(zval *p TSRMLS_DC); 225 PHPAPI int php_output_get_length(zval *p TSRMLS_DC); 226 PHPAPI int php_output_get_level(TSRMLS_D); 227 PHPAPI php_output_handler* php_output_get_active_handler(TSRMLS_D); 228 229 PHPAPI int php_output_start_default(TSRMLS_D); 230 PHPAPI int php_output_start_devnull(TSRMLS_D); 231 232 PHPAPI int php_output_start_user(zval *output_handler, size_t chunk_size, int flags TSRMLS_DC); 233 PHPAPI int php_output_start_internal(const char *name, size_t name_len, php_output_handler_func_t output_handler, size_t chunk_size, int flags TSRMLS_DC); 234 235 PHPAPI php_output_handler *php_output_handler_create_user(zval *handler, size_t chunk_size, int flags TSRMLS_DC); 236 PHPAPI php_output_handler *php_output_handler_create_internal(const char *name, size_t name_len, php_output_handler_context_func_t handler, size_t chunk_size, int flags TSRMLS_DC); 237 238 PHPAPI void php_output_handler_set_context(php_output_handler *handler, void *opaq, void (*dtor)(void* TSRMLS_DC) TSRMLS_DC); 239 PHPAPI int php_output_handler_start(php_output_handler *handler TSRMLS_DC); 240 PHPAPI int php_output_handler_started(const char *name, size_t name_len TSRMLS_DC); 241 PHPAPI int php_output_handler_hook(php_output_handler_hook_t type, void *arg TSRMLS_DC); 242 PHPAPI void php_output_handler_dtor(php_output_handler *handler TSRMLS_DC); 243 PHPAPI void php_output_handler_free(php_output_handler **handler TSRMLS_DC); 244 245 PHPAPI int php_output_handler_conflict(const char *handler_new, size_t handler_new_len, const char *handler_set, size_t handler_set_len TSRMLS_DC); 246 PHPAPI int php_output_handler_conflict_register(const char *handler_name, size_t handler_name_len, php_output_handler_conflict_check_t check_func TSRMLS_DC); 247 PHPAPI int php_output_handler_reverse_conflict_register(const char *handler_name, size_t handler_name_len, php_output_handler_conflict_check_t check_func TSRMLS_DC); 248 249 PHPAPI php_output_handler_alias_ctor_t *php_output_handler_alias(const char *handler_name, size_t handler_name_len TSRMLS_DC); 250 PHPAPI int php_output_handler_alias_register(const char *handler_name, size_t handler_name_len, php_output_handler_alias_ctor_t func TSRMLS_DC); 251 252 END_EXTERN_C() 253 254 255 PHP_FUNCTION(ob_start); 256 PHP_FUNCTION(ob_flush); 257 PHP_FUNCTION(ob_clean); 258 PHP_FUNCTION(ob_end_flush); 259 PHP_FUNCTION(ob_end_clean); 260 PHP_FUNCTION(ob_get_flush); 261 PHP_FUNCTION(ob_get_clean); 262 PHP_FUNCTION(ob_get_contents); 263 PHP_FUNCTION(ob_get_length); 264 PHP_FUNCTION(ob_get_level); 265 PHP_FUNCTION(ob_get_status); 266 PHP_FUNCTION(ob_implicit_flush); 267 PHP_FUNCTION(ob_list_handlers); 268 269 PHP_FUNCTION(output_add_rewrite_var); 270 PHP_FUNCTION(output_reset_rewrite_vars); 271 272 #endif 273 274 /* 275 * Local variables: 276 * tab-width: 4 277 * c-basic-offset: 4 278 * End: 279 * vim600: sw=4 ts=4 fdm=marker 280 * vim<600: sw=4 ts=4 281 */ 282
