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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Michael Wallner <mike@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef PHP_OUTPUT_H
#define PHP_OUTPUT_H
#define PHP_OUTPUT_NEWAPI 1
/* handler ops */
#define PHP_OUTPUT_HANDLER_WRITE 0x00 /* standard passthru */
#define PHP_OUTPUT_HANDLER_START 0x01 /* start */
#define PHP_OUTPUT_HANDLER_CLEAN 0x02 /* restart */
#define PHP_OUTPUT_HANDLER_FLUSH 0x04 /* pass along as much as possible */
#define PHP_OUTPUT_HANDLER_FINAL 0x08 /* finalize */
#define PHP_OUTPUT_HANDLER_CONT PHP_OUTPUT_HANDLER_WRITE
#define PHP_OUTPUT_HANDLER_END PHP_OUTPUT_HANDLER_FINAL
/* handler types */
#define PHP_OUTPUT_HANDLER_INTERNAL 0x0000
#define PHP_OUTPUT_HANDLER_USER 0x0001
/* handler ability flags */
#define PHP_OUTPUT_HANDLER_CLEANABLE 0x0010
#define PHP_OUTPUT_HANDLER_FLUSHABLE 0x0020
#define PHP_OUTPUT_HANDLER_REMOVABLE 0x0040
#define PHP_OUTPUT_HANDLER_STDFLAGS 0x0070
/* handler status flags */
#define PHP_OUTPUT_HANDLER_STARTED 0x1000
#define PHP_OUTPUT_HANDLER_DISABLED 0x2000
#define PHP_OUTPUT_HANDLER_PROCESSED 0x4000
/* handler op return values */
typedef enum _php_output_handler_status_t {
PHP_OUTPUT_HANDLER_FAILURE,
PHP_OUTPUT_HANDLER_SUCCESS,
PHP_OUTPUT_HANDLER_NO_DATA
} php_output_handler_status_t;
/* php_output_stack_pop() flags */
#define PHP_OUTPUT_POP_TRY 0x000
#define PHP_OUTPUT_POP_FORCE 0x001
#define PHP_OUTPUT_POP_DISCARD 0x010
#define PHP_OUTPUT_POP_SILENT 0x100
/* real global flags */
#define PHP_OUTPUT_IMPLICITFLUSH 0x01
#define PHP_OUTPUT_DISABLED 0x02
#define PHP_OUTPUT_WRITTEN 0x04
#define PHP_OUTPUT_SENT 0x08
/* supplementary flags for php_output_get_status() */
#define PHP_OUTPUT_ACTIVE 0x10
#define PHP_OUTPUT_LOCKED 0x20
/* output layer is ready to use */
#define PHP_OUTPUT_ACTIVATED 0x100000
/* handler hooks */
typedef enum _php_output_handler_hook_t {
PHP_OUTPUT_HANDLER_HOOK_GET_OPAQ,
PHP_OUTPUT_HANDLER_HOOK_GET_FLAGS,
PHP_OUTPUT_HANDLER_HOOK_GET_LEVEL,
PHP_OUTPUT_HANDLER_HOOK_IMMUTABLE,
PHP_OUTPUT_HANDLER_HOOK_DISABLE,
/* unused */
PHP_OUTPUT_HANDLER_HOOK_LAST
} php_output_handler_hook_t;
#define PHP_OUTPUT_HANDLER_INITBUF_SIZE(s) \
( ((s) > 1) ? \
(s) + PHP_OUTPUT_HANDLER_ALIGNTO_SIZE - ((s) % (PHP_OUTPUT_HANDLER_ALIGNTO_SIZE)) : \
PHP_OUTPUT_HANDLER_DEFAULT_SIZE \
)
#define PHP_OUTPUT_HANDLER_ALIGNTO_SIZE 0x1000
#define PHP_OUTPUT_HANDLER_DEFAULT_SIZE 0x4000
typedef struct _php_output_buffer {
char *data;
size_t size;
size_t used;
uint32_t free:1;
uint32_t _reserved:31;
} php_output_buffer;
typedef struct _php_output_context {
int op;
php_output_buffer in;
php_output_buffer out;
} php_output_context;
/* old-style, stateless callback */
typedef void (*php_output_handler_func_t)(char *output, size_t output_len, char **handled_output, size_t *handled_output_len, int mode);
/* new-style, opaque context callback */
typedef int (*php_output_handler_context_func_t)(void **handler_context, php_output_context *output_context);
/* output handler context dtor */
typedef void (*php_output_handler_context_dtor_t)(void *opaq);
/* conflict check callback */
typedef int (*php_output_handler_conflict_check_t)(const char *handler_name, size_t handler_name_len);
/* ctor for aliases */
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);
typedef struct _php_output_handler_user_func_t {
zend_fcall_info fci;
zend_fcall_info_cache fcc;
zval zoh;
} php_output_handler_user_func_t;
typedef struct _php_output_handler {
zend_string *name;
int flags;
int level;
size_t size;
php_output_buffer buffer;
void *opaq;
void (*dtor)(void *opaq);
union {
php_output_handler_user_func_t *user;
php_output_handler_context_func_t internal;
} func;
} php_output_handler;
ZEND_BEGIN_MODULE_GLOBALS(output)
zend_stack handlers;
php_output_handler *active;
php_output_handler *running;
zend_string *output_start_filename;
int output_start_lineno;
int flags;
ZEND_END_MODULE_GLOBALS(output)
PHPAPI ZEND_EXTERN_MODULE_GLOBALS(output)
/* there should not be a need to use OG() from outside of output.c */
#ifdef ZTS
# define OG(v) ZEND_TSRMG(output_globals_id, zend_output_globals *, v)
#else
# define OG(v) (output_globals.v)
#endif
/* convenience macros */
#define PHPWRITE(str, str_len) php_output_write((str), (str_len))
#define PHPWRITE_H(str, str_len) php_output_write_unbuffered((str), (str_len))
#define PUTC(c) php_output_write((const char *) &(c), 1)
#define PUTC_H(c) php_output_write_unbuffered((const char *) &(c), 1)
#define PUTS(str) do { \
const char *__str = (str); \
php_output_write(__str, strlen(__str)); \
} while (0)
#define PUTS_H(str) do { \
const char *__str = (str); \
php_output_write_unbuffered(__str, strlen(__str)); \
} while (0)
BEGIN_EXTERN_C()
extern const char php_output_default_handler_name[sizeof("default output handler")];
extern const char php_output_devnull_handler_name[sizeof("null output handler")];
#define php_output_tearup() \
php_output_startup(); \
php_output_activate()
#define php_output_teardown() \
php_output_end_all(); \
php_output_deactivate(); \
php_output_shutdown()
/* MINIT */
PHPAPI void php_output_startup(void);
/* MSHUTDOWN */
PHPAPI void php_output_shutdown(void);
PHPAPI void php_output_register_constants(void);
/* RINIT */
PHPAPI int php_output_activate(void);
/* RSHUTDOWN */
PHPAPI void php_output_deactivate(void);
PHPAPI void php_output_set_status(int status);
PHPAPI int php_output_get_status(void);
PHPAPI void php_output_set_implicit_flush(int flush);
PHPAPI const char *php_output_get_start_filename(void);
PHPAPI int php_output_get_start_lineno(void);
PHPAPI size_t php_output_write_unbuffered(const char *str, size_t len);
PHPAPI size_t php_output_write(const char *str, size_t len);
PHPAPI int php_output_flush(void);
PHPAPI void php_output_flush_all(void);
PHPAPI int php_output_clean(void);
PHPAPI void php_output_clean_all(void);
PHPAPI int php_output_end(void);
PHPAPI void php_output_end_all(void);
PHPAPI int php_output_discard(void);
PHPAPI void php_output_discard_all(void);
PHPAPI int php_output_get_contents(zval *p);
PHPAPI int php_output_get_length(zval *p);
PHPAPI int php_output_get_level(void);
PHPAPI php_output_handler* php_output_get_active_handler(void);
PHPAPI int php_output_start_default(void);
PHPAPI int php_output_start_devnull(void);
PHPAPI int php_output_start_user(zval *output_handler, size_t chunk_size, int flags);
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);
PHPAPI php_output_handler *php_output_handler_create_user(zval *handler, size_t chunk_size, int flags);
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);
PHPAPI void php_output_handler_set_context(php_output_handler *handler, void *opaq, void (*dtor)(void*));
PHPAPI int php_output_handler_start(php_output_handler *handler);
PHPAPI int php_output_handler_started(const char *name, size_t name_len);
PHPAPI int php_output_handler_hook(php_output_handler_hook_t type, void *arg);
PHPAPI void php_output_handler_dtor(php_output_handler *handler);
PHPAPI void php_output_handler_free(php_output_handler **handler);
PHPAPI int php_output_handler_conflict(const char *handler_new, size_t handler_new_len, const char *handler_set, size_t handler_set_len);
PHPAPI int php_output_handler_conflict_register(const char *handler_name, size_t handler_name_len, php_output_handler_conflict_check_t check_func);
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);
PHPAPI php_output_handler_alias_ctor_t php_output_handler_alias(const char *handler_name, size_t handler_name_len);
PHPAPI int php_output_handler_alias_register(const char *handler_name, size_t handler_name_len, php_output_handler_alias_ctor_t func);
END_EXTERN_C()
PHP_FUNCTION(ob_start);
PHP_FUNCTION(ob_flush);
PHP_FUNCTION(ob_clean);
PHP_FUNCTION(ob_end_flush);
PHP_FUNCTION(ob_end_clean);
PHP_FUNCTION(ob_get_flush);
PHP_FUNCTION(ob_get_clean);
PHP_FUNCTION(ob_get_contents);
PHP_FUNCTION(ob_get_length);
PHP_FUNCTION(ob_get_level);
PHP_FUNCTION(ob_get_status);
PHP_FUNCTION(ob_implicit_flush);
PHP_FUNCTION(ob_list_handlers);
PHP_FUNCTION(output_add_rewrite_var);
PHP_FUNCTION(output_reset_rewrite_vars);
#endif
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