#include <stdio.h>
#include <sys/types.h>
#include <yaz/snprintf.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#include <assert.h>
#include <yaz/yaz-util.h>
#include <yaz/comstack.h>
#include <yaz/nmem.h>
#include <yaz/mutex.h>
#include "ppmutex.h"
#include "session.h"
#include "http.h"
#include "parameters.h"

Data Structures
struct	http_buf
struct	http_server
struct	http_channel_observer_s

Macros
#define	MAX_HTTP_HEADER 4096
#define	HTTP_BUF_SIZE 4096
#define	CLOSESOCKET(x) close(x)

Functions
static void	proxy_io (IOCHAN i, int event)
static struct http_channel *	http_channel_create (http_server_t http_server, const char addr, struct conf_server server)
static void	http_channel_destroy (IOCHAN i)
static http_server_t	http_server_create (void)
static void	http_server_incref (http_server_t hs)
const char *	http_lookup_header (struct http_header header, const char name)
static struct http_buf *	http_buf_create (http_server_t hs)
static void	http_buf_destroy (http_server_t hs, struct http_buf *b)
static void	http_buf_destroy_queue (http_server_t hs, struct http_buf *b)
static struct http_buf *	http_buf_bybuf (http_server_t hs, char *b, int len)
static void	http_buf_enqueue (struct http_buf *queue, struct http_buf b)
static struct http_buf *	http_buf_bywrbuf (http_server_t hs, WRBUF wrbuf)
static void	http_buf_peek (struct http_buf b, char buf, int len)
static int	http_buf_size (struct http_buf *b)
static int	http_buf_read (http_server_t hs, struct http_buf *b, char buf, int len)
static void	urldecode (char i, char o)
void	urlencode (const char i, char o)
void	http_addheader (struct http_response r, const char name, const char *value)
const char *	http_argbyname (struct http_request r, const char name)
const char *	http_headerbyname (struct http_header h, const char name)
struct http_response *	http_create_response (struct http_channel *c)
static const char *	next_crlf (const char cp, size_t skipped)
static int	package_check (const char *buf, int sz)
static int	request_check (struct http_buf *queue)
struct http_response *	http_parse_response_buf (struct http_channel c, const char buf, int len)
static int	http_parse_arguments (struct http_request r, NMEM nmem, const char args)
struct http_request *	http_parse_request (struct http_channel c, struct http_buf *queue, int len)
static struct http_buf *	http_serialize_response (struct http_channel c, struct http_response r)
static struct http_buf *	http_serialize_request (struct http_request *r)
static int	http_weshouldproxy (struct http_request *rq)
struct http_header *	http_header_append (struct http_channel ch, struct http_header hp, const char name, const char value)
static int	is_inprogress (void)
static void	enable_nonblock (int sock)
static int	http_proxy (struct http_request *rq)
void	http_send_response (struct http_channel *ch)
static void	http_error (struct http_channel hc, int no, const char msg)
static void	http_io (IOCHAN i, int event)
static void	http_fire_observers (struct http_channel *c)
static void	http_destroy_observers (struct http_channel *c)
static void	http_accept (IOCHAN i, int event)
int	http_init (const char addr, struct conf_server server, const char *record_fname)
void	http_close_server (struct conf_server *server)
void	http_set_proxyaddr (const char host, struct conf_server server)
http_channel_observer_t	http_add_observer (struct http_channel c, void data, http_channel_destroy_t des)
void	http_remove_observer (http_channel_observer_t obs)
struct http_channel *	http_channel_observer_chan (http_channel_observer_t obs)
void	http_observer_set_data2 (http_channel_observer_t obs, void *data2)
void	http_server_destroy (http_server_t hs)
void	http_mutex_init (struct conf_server *server)