* Copyright (c) 1998-2004 Dag-Erling Co�dan Sm�rgrav

/* $NetBSD: fetch.h,v 1.1.1.7 2010/01/30 21:26:11 joerg Exp $ */
/*-
* Copyright (c) 1998-2004 Dag-Erling Co�dan Sm�rgrav
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: fetch.h,v 1.26 2004/09/21 18:35:20 des Exp $
*/

#ifndef _FETCH_H_INCLUDED
#define _FETCH_H_INCLUDED

#include <sys/types.h>
#include <limits.h>
#include <stdio.h>

#define _LIBFETCH_VER "libfetch/2.0"

#define URL_HOSTLEN 255
#define URL_SCHEMELEN 16
#define URL_USERLEN 256
#define URL_PWDLEN 256

typedef struct fetchIO fetchIO;

struct url {
char scheme[URL_SCHEMELEN + 1];
char user[URL_USERLEN + 1];
char pwd[URL_PWDLEN + 1];
char host[URL_HOSTLEN + 1];
int port;
char *doc;
off_t offset;
size_t length;
time_t last_modified;
};

struct url_stat {
off_t size;
time_t atime;
time_t mtime;
};

struct url_list {
size_t length;
size_t alloc_size;
struct url *urls;
};

/* Recognized schemes */
#define SCHEME_FTP "ftp"
#define SCHEME_HTTP "http"
#define SCHEME_HTTPS "https"
#define SCHEME_FILE "file"

/* Error codes */
#define FETCH_ABORT 1
#define FETCH_AUTH 2
#define FETCH_DOWN 3
#define FETCH_EXISTS 4
#define FETCH_FULL 5
#define FETCH_INFO 6
#define FETCH_MEMORY 7
#define FETCH_MOVED 8
#define FETCH_NETWORK 9
#define FETCH_OK 10
#define FETCH_PROTO 11
#define FETCH_RESOLV 12
#define FETCH_SERVER 13
#define FETCH_TEMP 14
#define FETCH_TIMEOUT 15
#define FETCH_UNAVAIL 16
#define FETCH_UNKNOWN 17
#define FETCH_URL 18
#define FETCH_VERBOSE 19
#define FETCH_UNCHANGED 20

#if defined(__cplusplus)
extern "C" {
#endif

void fetchIO_close(fetchIO *);
ssize_t fetchIO_read(fetchIO *, void *, size_t);
ssize_t fetchIO_write(fetchIO *, const void *, size_t);

/* fetchIO-specific functions */
fetchIO *fetchXGetFile(struct url *, struct url_stat *, const char *);
fetchIO *fetchGetFile(struct url *, const char *);
fetchIO *fetchPutFile(struct url *, const char *);
int fetchStatFile(struct url *, struct url_stat *, const char *);
int fetchListFile(struct url_list *, struct url *, const char *,
const char *);

/* HTTP-specific functions */
fetchIO *fetchXGetHTTP(struct url *, struct url_stat *, const char *);
fetchIO *fetchGetHTTP(struct url *, const char *);
fetchIO *fetchPutHTTP(struct url *, const char *);
int fetchStatHTTP(struct url *, struct url_stat *, const char *);
int fetchListHTTP(struct url_list *, struct url *, const char *,
const char *);

/* FTP-specific functions */
fetchIO *fetchXGetFTP(struct url *, struct url_stat *, const char *);
fetchIO *fetchGetFTP(struct url *, const char *);
fetchIO *fetchPutFTP(struct url *, const char *);
int fetchStatFTP(struct url *, struct url_stat *, const char *);
int fetchListFTP(struct url_list *, struct url *, const char *,
const char *);

/* Generic functions */
fetchIO *fetchXGetURL(const char *, struct url_stat *, const char *);
fetchIO *fetchGetURL(const char *, const char *);
fetchIO *fetchPutURL(const char *, const char *);
int fetchStatURL(const char *, struct url_stat *, const char *);
int fetchListURL(struct url_list *, const char *, const char *,
const char *);
fetchIO *fetchXGet(struct url *, struct url_stat *, const char *);
fetchIO *fetchGet(struct url *, const char *);
fetchIO *fetchPut(struct url *, const char *);
int fetchStat(struct url *, struct url_stat *, const char *);
int fetchList(struct url_list *, struct url *, const char *,
const char *);

/* URL parsing */
struct url *fetchMakeURL(const char *, const char *, int,
const char *, const char *, const char *);
struct url *fetchParseURL(const char *);
struct url *fetchCopyURL(const struct url *);
char *fetchStringifyURL(const struct url *);
void fetchFreeURL(struct url *);

/* URL listening */
void fetchInitURLList(struct url_list *);
int fetchAppendURLList(struct url_list *, const struct url_list *);
void fetchFreeURLList(struct url_list *);
char *fetchUnquotePath(struct url *);
char *fetchUnquoteFilename(struct url *);

/* Connection caching */
void fetchConnectionCacheInit(int, int);
void fetchConnectionCacheClose(void);

/* Authentication */
typedef int (*auth_t)(struct url *);
extern auth_t fetchAuthMethod;

/* Last error code */
extern int fetchLastErrCode;
#define MAXERRSTRING 256
extern char fetchLastErrString[MAXERRSTRING];

/* I/O timeout */
extern int fetchTimeout;

/* Restart interrupted syscalls */
extern volatile int fetchRestartCalls;

/* Extra verbosity */
extern int fetchDebug;

#if defined(__cplusplus)
}
#endif

#endif