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/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2016 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.               |
   +----------------------------------------------------------------------+
   | Authors: Dmitry Stogov <dmitry@zend.com>                             |
   +----------------------------------------------------------------------+
*/

/* $Id: fastcgi.h 272370 2008-12-31 11:15:49Z sebastian $ */

/* FastCGI protocol */

#define FCGI_VERSION_1 1

#define FCGI_MAX_LENGTH 0xffff

#define FCGI_KEEP_CONN  1

typedef enum _fcgi_role {
	FCGI_RESPONDER	= 1,
	FCGI_AUTHORIZER	= 2,
	FCGI_FILTER		= 3
} fcgi_role;

typedef enum _fcgi_request_type {
	FCGI_BEGIN_REQUEST		=  1, /* [in]                              */
	FCGI_ABORT_REQUEST		=  2, /* [in]  (not supported)             */
	FCGI_END_REQUEST		=  3, /* [out]                             */
	FCGI_PARAMS				=  4, /* [in]  environment variables       */
	FCGI_STDIN				=  5, /* [in]  post data                   */
	FCGI_STDOUT				=  6, /* [out] response                    */
	FCGI_STDERR				=  7, /* [out] errors                      */
	FCGI_DATA				=  8, /* [in]  filter data (not supported) */
	FCGI_GET_VALUES			=  9, /* [in]                              */
	FCGI_GET_VALUES_RESULT	= 10  /* [out]                             */
} fcgi_request_type;

typedef enum _fcgi_protocol_status {
	FCGI_REQUEST_COMPLETE	= 0,
	FCGI_CANT_MPX_CONN		= 1,
	FCGI_OVERLOADED			= 2,
	FCGI_UNKNOWN_ROLE		= 3
} dcgi_protocol_status;

typedef struct _fcgi_header {
	unsigned char version;
	unsigned char type;
	unsigned char requestIdB1;
	unsigned char requestIdB0;
	unsigned char contentLengthB1;
	unsigned char contentLengthB0;
	unsigned char paddingLength;
	unsigned char reserved;
} fcgi_header;

typedef struct _fcgi_begin_request {
	unsigned char roleB1;
	unsigned char roleB0;
	unsigned char flags;
	unsigned char reserved[5];
} fcgi_begin_request;

typedef struct _fcgi_begin_request_rec {
	fcgi_header hdr;
	fcgi_begin_request body;
} fcgi_begin_request_rec;

typedef struct _fcgi_end_request {
	unsigned char appStatusB3;
	unsigned char appStatusB2;
	unsigned char appStatusB1;
	unsigned char appStatusB0;
	unsigned char protocolStatus;
	unsigned char reserved[3];
} fcgi_end_request;

typedef struct _fcgi_end_request_rec {
	fcgi_header hdr;
	fcgi_end_request body;
} fcgi_end_request_rec;

/* FastCGI client API */

typedef struct _fcgi_request {
	int            listen_socket;
#ifdef _WIN32
	int            tcp;
#endif
	int            fd;
	int            id;
	int            keep;
	int            closed;

	int            in_len;
	int            in_pad;

	fcgi_header   *out_hdr;
	unsigned char *out_pos;
	unsigned char  out_buf[1024*8];
	unsigned char  reserved[sizeof(fcgi_end_request_rec)];

	HashTable     *env;
} fcgi_request;

int fcgi_init(void);
void fcgi_shutdown(void);
void fcgi_init_request(fcgi_request *req, int listen_socket);
int fcgi_accept_request(fcgi_request *req);
int fcgi_finish_request(fcgi_request *req, int force_close);

void fcgi_set_in_shutdown(int);
void fcgi_set_allowed_clients(char *);
void fcgi_close(fcgi_request *req, int force, int destroy);

char* fcgi_getenv(fcgi_request *req, const char* var, int var_len);
char* fcgi_putenv(fcgi_request *req, char* var, int var_len, char* val);

int fcgi_read(fcgi_request *req, char *str, int len);

ssize_t fcgi_write(fcgi_request *req, fcgi_request_type type, const char *str, int len);
int fcgi_flush(fcgi_request *req, int close);

void fcgi_set_mgmt_var(const char * name, size_t name_len, const char * value, size_t value_len);
void fcgi_free_mgmt_var_cb(void * ptr);

const char *fcgi_get_last_client_ip();

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */