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https://github.com/php/php-src.git
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a1d4595d65
As is, for requested size which are already aligned, we over-allocate, so we fix this. We also fix the allocation for chunk size 1. This issue has been reported by @kkmuffme. Thanks to @iluuu1994 for improving the fix! Closes GH-16161.
245 lines
9.0 KiB
C
245 lines
9.0 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Michael Wallner <mike@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef PHP_OUTPUT_H
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#define PHP_OUTPUT_H
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#define PHP_OUTPUT_NEWAPI 1
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/* handler ops */
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#define PHP_OUTPUT_HANDLER_WRITE 0x00 /* standard passthru */
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#define PHP_OUTPUT_HANDLER_START 0x01 /* start */
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#define PHP_OUTPUT_HANDLER_CLEAN 0x02 /* restart */
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#define PHP_OUTPUT_HANDLER_FLUSH 0x04 /* pass along as much as possible */
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#define PHP_OUTPUT_HANDLER_FINAL 0x08 /* finalize */
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#define PHP_OUTPUT_HANDLER_CONT PHP_OUTPUT_HANDLER_WRITE
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#define PHP_OUTPUT_HANDLER_END PHP_OUTPUT_HANDLER_FINAL
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/* handler types */
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#define PHP_OUTPUT_HANDLER_INTERNAL 0x0000
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#define PHP_OUTPUT_HANDLER_USER 0x0001
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/* handler ability flags */
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#define PHP_OUTPUT_HANDLER_CLEANABLE 0x0010
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#define PHP_OUTPUT_HANDLER_FLUSHABLE 0x0020
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#define PHP_OUTPUT_HANDLER_REMOVABLE 0x0040
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#define PHP_OUTPUT_HANDLER_STDFLAGS 0x0070
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/* handler status flags */
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#define PHP_OUTPUT_HANDLER_STARTED 0x1000
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#define PHP_OUTPUT_HANDLER_DISABLED 0x2000
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#define PHP_OUTPUT_HANDLER_PROCESSED 0x4000
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#define PHP_OUTPUT_HANDLER_ABILITY_FLAGS(bitmask) ((bitmask) & ~0xf00f)
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/* handler op return values */
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typedef enum _php_output_handler_status_t {
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PHP_OUTPUT_HANDLER_FAILURE,
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PHP_OUTPUT_HANDLER_SUCCESS,
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PHP_OUTPUT_HANDLER_NO_DATA
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} php_output_handler_status_t;
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/* php_output_stack_pop() flags */
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#define PHP_OUTPUT_POP_TRY 0x000
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#define PHP_OUTPUT_POP_FORCE 0x001
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#define PHP_OUTPUT_POP_DISCARD 0x010
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#define PHP_OUTPUT_POP_SILENT 0x100
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/* real global flags */
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#define PHP_OUTPUT_IMPLICITFLUSH 0x01
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#define PHP_OUTPUT_DISABLED 0x02
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#define PHP_OUTPUT_WRITTEN 0x04
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#define PHP_OUTPUT_SENT 0x08
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/* supplementary flags for php_output_get_status() */
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#define PHP_OUTPUT_ACTIVE 0x10
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#define PHP_OUTPUT_LOCKED 0x20
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/* output layer is ready to use */
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#define PHP_OUTPUT_ACTIVATED 0x100000
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/* handler hooks */
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typedef enum _php_output_handler_hook_t {
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PHP_OUTPUT_HANDLER_HOOK_GET_OPAQ,
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PHP_OUTPUT_HANDLER_HOOK_GET_FLAGS,
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PHP_OUTPUT_HANDLER_HOOK_GET_LEVEL,
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PHP_OUTPUT_HANDLER_HOOK_IMMUTABLE,
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PHP_OUTPUT_HANDLER_HOOK_DISABLE,
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/* unused */
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PHP_OUTPUT_HANDLER_HOOK_LAST
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} php_output_handler_hook_t;
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#define PHP_OUTPUT_HANDLER_INITBUF_SIZE(s) \
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( ((s) > 0) ? \
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ZEND_MM_ALIGNED_SIZE_EX(s, PHP_OUTPUT_HANDLER_ALIGNTO_SIZE) : \
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PHP_OUTPUT_HANDLER_DEFAULT_SIZE \
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)
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#define PHP_OUTPUT_HANDLER_ALIGNTO_SIZE 0x1000
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#define PHP_OUTPUT_HANDLER_DEFAULT_SIZE 0x4000
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typedef struct _php_output_buffer {
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char *data;
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size_t size;
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size_t used;
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uint32_t free:1;
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uint32_t _reserved:31;
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} php_output_buffer;
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typedef struct _php_output_context {
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int op;
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php_output_buffer in;
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php_output_buffer out;
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} php_output_context;
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/* old-style, stateless callback */
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typedef void (*php_output_handler_func_t)(char *output, size_t output_len, char **handled_output, size_t *handled_output_len, int mode);
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/* new-style, opaque context callback */
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typedef zend_result (*php_output_handler_context_func_t)(void **handler_context, php_output_context *output_context);
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/* output handler context dtor */
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typedef void (*php_output_handler_context_dtor_t)(void *opaq);
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/* conflict check callback */
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typedef zend_result (*php_output_handler_conflict_check_t)(const char *handler_name, size_t handler_name_len);
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/* ctor for aliases */
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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);
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typedef struct _php_output_handler_user_func_t {
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zend_fcall_info fci;
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zend_fcall_info_cache fcc;
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zval zoh;
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} php_output_handler_user_func_t;
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typedef struct _php_output_handler {
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zend_string *name;
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int flags;
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int level;
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size_t size;
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php_output_buffer buffer;
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void *opaq;
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void (*dtor)(void *opaq);
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union {
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php_output_handler_user_func_t *user;
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php_output_handler_context_func_t internal;
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} func;
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} php_output_handler;
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ZEND_BEGIN_MODULE_GLOBALS(output)
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zend_stack handlers;
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php_output_handler *active;
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php_output_handler *running;
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zend_string *output_start_filename;
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int output_start_lineno;
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int flags;
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ZEND_END_MODULE_GLOBALS(output)
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PHPAPI ZEND_EXTERN_MODULE_GLOBALS(output)
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/* there should not be a need to use OG() from outside of output.c */
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#ifdef ZTS
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# define OG(v) ZEND_TSRMG(output_globals_id, zend_output_globals *, v)
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#else
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# define OG(v) (output_globals.v)
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#endif
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/* convenience macros */
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#define PHPWRITE(str, str_len) php_output_write((str), (str_len))
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#define PHPWRITE_H(str, str_len) php_output_write_unbuffered((str), (str_len))
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#define PUTC(c) php_output_write((const char *) &(c), 1)
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#define PUTC_H(c) php_output_write_unbuffered((const char *) &(c), 1)
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#define PUTS(str) do { \
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const char *__str = (str); \
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php_output_write(__str, strlen(__str)); \
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} while (0)
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#define PUTS_H(str) do { \
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const char *__str = (str); \
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php_output_write_unbuffered(__str, strlen(__str)); \
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} while (0)
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BEGIN_EXTERN_C()
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extern const char php_output_default_handler_name[sizeof("default output handler")];
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extern const char php_output_devnull_handler_name[sizeof("null output handler")];
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#define php_output_tearup() \
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php_output_startup(); \
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php_output_activate()
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#define php_output_teardown() \
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php_output_end_all(); \
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php_output_deactivate(); \
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php_output_shutdown()
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/* MINIT */
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PHPAPI void php_output_startup(void);
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/* MSHUTDOWN */
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PHPAPI void php_output_shutdown(void);
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/* RINIT */
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PHPAPI int php_output_activate(void);
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/* RSHUTDOWN */
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PHPAPI void php_output_deactivate(void);
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PHPAPI void php_output_set_status(int status);
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PHPAPI int php_output_get_status(void);
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PHPAPI void php_output_set_implicit_flush(int flush);
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PHPAPI const char *php_output_get_start_filename(void);
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PHPAPI int php_output_get_start_lineno(void);
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PHPAPI size_t php_output_write_unbuffered(const char *str, size_t len);
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PHPAPI size_t php_output_write(const char *str, size_t len);
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PHPAPI zend_result php_output_flush(void);
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PHPAPI void php_output_flush_all(void);
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PHPAPI zend_result php_output_clean(void);
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PHPAPI void php_output_clean_all(void);
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PHPAPI zend_result php_output_end(void);
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PHPAPI void php_output_end_all(void);
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PHPAPI zend_result php_output_discard(void);
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PHPAPI void php_output_discard_all(void);
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PHPAPI zend_result php_output_get_contents(zval *p);
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PHPAPI zend_result php_output_get_length(zval *p);
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PHPAPI int php_output_get_level(void);
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PHPAPI php_output_handler* php_output_get_active_handler(void);
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PHPAPI zend_result php_output_start_default(void);
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PHPAPI zend_result php_output_start_devnull(void);
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PHPAPI zend_result php_output_start_user(zval *output_handler, size_t chunk_size, int flags);
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PHPAPI zend_result php_output_start_internal(const char *name, size_t name_len, php_output_handler_func_t output_handler, size_t chunk_size, int flags);
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PHPAPI php_output_handler *php_output_handler_create_user(zval *handler, size_t chunk_size, int flags);
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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);
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PHPAPI void php_output_handler_set_context(php_output_handler *handler, void *opaq, void (*dtor)(void*));
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PHPAPI zend_result php_output_handler_start(php_output_handler *handler);
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PHPAPI bool php_output_handler_started(const char *name, size_t name_len);
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PHPAPI zend_result php_output_handler_hook(php_output_handler_hook_t type, void *arg);
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PHPAPI void php_output_handler_dtor(php_output_handler *handler);
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PHPAPI void php_output_handler_free(php_output_handler **handler);
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PHPAPI bool php_output_handler_conflict(const char *handler_new, size_t handler_new_len, const char *handler_set, size_t handler_set_len);
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PHPAPI zend_result php_output_handler_conflict_register(const char *handler_name, size_t handler_name_len, php_output_handler_conflict_check_t check_func);
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PHPAPI zend_result php_output_handler_reverse_conflict_register(const char *handler_name, size_t handler_name_len, php_output_handler_conflict_check_t check_func);
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PHPAPI php_output_handler_alias_ctor_t php_output_handler_alias(const char *handler_name, size_t handler_name_len);
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PHPAPI zend_result php_output_handler_alias_register(const char *handler_name, size_t handler_name_len, php_output_handler_alias_ctor_t func);
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END_EXTERN_C()
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#endif
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