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php-src/main/SAPI.h
Rasmus Lerdorf 6c158374ba exit_on_timeout patch 
After the sigsetjmp change, this is patch #2 in an effort to get some
sanity restored to signal handling in PHP.

This patch does two things.  First, it makes it possible to reset the
timeout without resetting the signal handlers.  This is important for
cases where an extension may have deferred signals in its MINIT in order
to implement critical sections. It also lays the groundwork for cleaning
up our signal handling and perhaps eventually implementing our own
signal deferring mechanism so we can have true critical sections.

The second thing this does is to make it possible to terminate the current
child process (only for Apache1 at the moment) on a timeout.  There are
a number of extensions that are unhappy about being longjmp'ed out of
and when this happens on a timeout they are left in an inconsistent state.
By turning on exit_on_timeout you can now force the process to terminate
on a timeout which will clean up any hanging locks and/or memory left
hanging after the longjmp.
2008-03-18 21:42:50 +00:00

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2008 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: |
| http://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: Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef SAPI_H
#define SAPI_H
#include "zend.h"
#include "zend_llist.h"
#include "zend_operators.h"
#ifdef PHP_WIN32
#include "win95nt.h"
#endif
#include <sys/stat.h>
#define SAPI_OPTION_NO_CHDIR 1
#define SAPI_POST_BLOCK_SIZE 4000
#ifdef PHP_WIN32
# ifdef SAPI_EXPORTS
# define SAPI_API __declspec(dllexport)
# else
# define SAPI_API __declspec(dllimport)
# endif
#elif defined(__GNUC__) && __GNUC__ >= 4
# define SAPI_API __attribute__ ((visibility("default")))
#else
# define SAPI_API
#endif
#undef shutdown
typedef struct {
char *header;
uint header_len;
zend_bool replace;
} sapi_header_struct;
typedef struct {
zend_llist headers;
int http_response_code;
unsigned char send_default_content_type;
char *mimetype;
char *http_status_line;
} sapi_headers_struct;
typedef struct _sapi_post_entry sapi_post_entry;
typedef struct _sapi_module_struct sapi_module_struct;
BEGIN_EXTERN_C()
extern SAPI_API sapi_module_struct sapi_module; /* true global */
END_EXTERN_C()
/* Some values in this structure needs to be filled in before
* calling sapi_activate(). We WILL change the `char *' entries,
* so make sure that you allocate a separate buffer for them
* and that you free them after sapi_deactivate().
*/
typedef struct {
const char *request_method;
char *query_string;
char *post_data, *raw_post_data;
char *cookie_data;
long content_length;
uint post_data_length, raw_post_data_length;
char *path_translated;
char *request_uri;
const char *content_type;
zend_bool headers_only;
zend_bool no_headers;
zend_bool headers_read;
sapi_post_entry *post_entry;
char *content_type_dup;
/* for HTTP authentication */
char *auth_user;
char *auth_password;
char *auth_digest;
/* this is necessary for the CGI SAPI module */
char *argv0;
/* this is necessary for Safe Mode */
char *current_user;
int current_user_length;
/* this is necessary for CLI module */
int argc;
char **argv;
int proto_num;
} sapi_request_info;
typedef struct _sapi_globals_struct {
void *server_context;
sapi_request_info request_info;
sapi_headers_struct sapi_headers;
int read_post_bytes;
unsigned char headers_sent;
struct stat global_stat;
char *default_mimetype;
char *default_charset;
HashTable *rfc1867_uploaded_files;
long post_max_size;
int options;
zend_bool sapi_started;
time_t global_request_time;
HashTable known_post_content_types;
} sapi_globals_struct;
BEGIN_EXTERN_C()
#ifdef ZTS
# define SG(v) TSRMG(sapi_globals_id, sapi_globals_struct *, v)
SAPI_API extern int sapi_globals_id;
#else
# define SG(v) (sapi_globals.v)
extern SAPI_API sapi_globals_struct sapi_globals;
#endif
SAPI_API void sapi_startup(sapi_module_struct *sf);
SAPI_API void sapi_shutdown(void);
SAPI_API void sapi_activate(TSRMLS_D);
SAPI_API void sapi_deactivate(TSRMLS_D);
SAPI_API void sapi_initialize_empty_request(TSRMLS_D);
END_EXTERN_C()
/*
* This is the preferred and maintained API for
* operating on HTTP headers.
*/
/*
* Always specify a sapi_header_line this way:
*
* sapi_header_line ctr = {0};
*/
typedef struct {
char *line; /* If you allocated this, you need to free it yourself */
uint line_len;
long response_code; /* long due to zend_parse_parameters compatibility */
} sapi_header_line;
typedef enum { /* Parameter: */
SAPI_HEADER_REPLACE, /* sapi_header_line* */
SAPI_HEADER_ADD, /* sapi_header_line* */
SAPI_HEADER_SET_STATUS /* int */
} sapi_header_op_enum;
BEGIN_EXTERN_C()
SAPI_API int sapi_header_op(sapi_header_op_enum op, void *arg TSRMLS_DC);
/* Deprecated functions. Use sapi_header_op instead. */
SAPI_API int sapi_add_header_ex(char *header_line, uint header_line_len, zend_bool duplicate, zend_bool replace TSRMLS_DC);
#define sapi_add_header(a, b, c) sapi_add_header_ex((a),(b),(c),1 TSRMLS_CC)
SAPI_API int sapi_send_headers(TSRMLS_D);
SAPI_API void sapi_free_header(sapi_header_struct *sapi_header);
SAPI_API void sapi_handle_post(void *arg TSRMLS_DC);
SAPI_API int sapi_register_post_entries(sapi_post_entry *post_entry TSRMLS_DC);
SAPI_API int sapi_register_post_entry(sapi_post_entry *post_entry TSRMLS_DC);
SAPI_API void sapi_unregister_post_entry(sapi_post_entry *post_entry TSRMLS_DC);
SAPI_API int sapi_register_default_post_reader(void (*default_post_reader)(TSRMLS_D));
SAPI_API int sapi_register_treat_data(void (*treat_data)(int arg, char *str, zval *destArray TSRMLS_DC));
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));
SAPI_API int sapi_flush(TSRMLS_D);
SAPI_API struct stat *sapi_get_stat(TSRMLS_D);
SAPI_API char *sapi_getenv(char *name, size_t name_len TSRMLS_DC);
SAPI_API char *sapi_get_default_content_type(TSRMLS_D);
SAPI_API void sapi_get_default_content_type_header(sapi_header_struct *default_header TSRMLS_DC);
SAPI_API size_t sapi_apply_default_charset(char **mimetype, size_t len TSRMLS_DC);
SAPI_API void sapi_activate_headers_only(TSRMLS_D);
SAPI_API int sapi_get_fd(int *fd TSRMLS_DC);
SAPI_API int sapi_force_http_10(TSRMLS_D);
SAPI_API int sapi_get_target_uid(uid_t * TSRMLS_DC);
SAPI_API int sapi_get_target_gid(gid_t * TSRMLS_DC);
SAPI_API time_t sapi_get_request_time(TSRMLS_D);
SAPI_API void sapi_terminate_process(TSRMLS_D);
END_EXTERN_C()
struct _sapi_module_struct {
char *name;
char *pretty_name;
int (*startup)(struct _sapi_module_struct *sapi_module);
int (*shutdown)(struct _sapi_module_struct *sapi_module);
int (*activate)(TSRMLS_D);
int (*deactivate)(TSRMLS_D);
int (*ub_write)(const char *str, unsigned int str_length TSRMLS_DC);
void (*flush)(void *server_context);
struct stat *(*get_stat)(TSRMLS_D);
char *(*getenv)(char *name, size_t name_len TSRMLS_DC);
void (*sapi_error)(int type, const char *error_msg, ...);
int (*header_handler)(sapi_header_struct *sapi_header, sapi_headers_struct *sapi_headers TSRMLS_DC);
int (*send_headers)(sapi_headers_struct *sapi_headers TSRMLS_DC);
void (*send_header)(sapi_header_struct *sapi_header, void *server_context TSRMLS_DC);
int (*read_post)(char *buffer, uint count_bytes TSRMLS_DC);
char *(*read_cookies)(TSRMLS_D);
void (*register_server_variables)(zval *track_vars_array TSRMLS_DC);
void (*log_message)(char *message);
time_t (*get_request_time)(TSRMLS_D);
void (*terminate_process)(TSRMLS_D);
char *php_ini_path_override;
void (*block_interruptions)(void);
void (*unblock_interruptions)(void);
void (*default_post_reader)(TSRMLS_D);
void (*treat_data)(int arg, char *str, zval *destArray TSRMLS_DC);
char *executable_location;
int php_ini_ignore;
int (*get_fd)(int *fd TSRMLS_DC);
int (*force_http_10)(TSRMLS_D);
int (*get_target_uid)(uid_t * TSRMLS_DC);
int (*get_target_gid)(gid_t * TSRMLS_DC);
unsigned int (*input_filter)(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC);
void (*ini_defaults)(HashTable *configuration_hash);
int phpinfo_as_text;
char *ini_entries;
};
struct _sapi_post_entry {
char *content_type;
uint content_type_len;
void (*post_reader)(TSRMLS_D);
void (*post_handler)(char *content_type_dup, void *arg TSRMLS_DC);
};
/* header_handler() constants */
#define SAPI_HEADER_ADD (1<<0)
#define SAPI_HEADER_DELETE_ALL (1<<1)
#define SAPI_HEADER_SEND_NOW (1<<2)
#define SAPI_HEADER_SENT_SUCCESSFULLY 1
#define SAPI_HEADER_DO_SEND 2
#define SAPI_HEADER_SEND_FAILED 3
#define SAPI_DEFAULT_MIMETYPE "text/html"
#define SAPI_DEFAULT_CHARSET ""
#define SAPI_PHP_VERSION_HEADER "X-Powered-By: PHP/" PHP_VERSION
#define SAPI_POST_READER_FUNC(post_reader) void post_reader(TSRMLS_D)
#define SAPI_POST_HANDLER_FUNC(post_handler) void post_handler(char *content_type_dup, void *arg TSRMLS_DC)
#define SAPI_TREAT_DATA_FUNC(treat_data) void treat_data(int arg, char *str, zval* destArray TSRMLS_DC)
#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)
BEGIN_EXTERN_C()
SAPI_API SAPI_POST_READER_FUNC(sapi_read_standard_form_data);
SAPI_API SAPI_POST_READER_FUNC(php_default_post_reader);
SAPI_API SAPI_TREAT_DATA_FUNC(php_default_treat_data);
SAPI_API SAPI_INPUT_FILTER_FUNC(php_default_input_filter);
END_EXTERN_C()
#define STANDARD_SAPI_MODULE_PROPERTIES
#endif /* SAPI_H */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
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