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vlc_url.h
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C/C++ Source or Header
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2012-12-12
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6KB
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227 lines
/*****************************************************************************
* vlc_url.h: URL related macros
*****************************************************************************
* Copyright (C) 2002-2006 VLC authors and VideoLAN
* $Id: 994d8ff24e3e897bc19e02476842b3d4cd29a336 $
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Rémi Denis-Courmont <rem # videolan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_URL_H
# define VLC_URL_H
/**
* \file
* This file defines functions for manipulating URL in vlc
*/
struct vlc_url_t
{
char *psz_protocol;
char *psz_username;
char *psz_password;
char *psz_host;
int i_port;
char *psz_path;
char *psz_option;
char *psz_buffer; /* to be freed */
};
VLC_API char * decode_URI_duplicate( const char *psz );
VLC_API char * decode_URI( char *psz );
VLC_API char * encode_URI_component( const char *psz );
VLC_API char * make_URI( const char *path, const char *scheme );
VLC_API char * make_path( const char *url );
/*****************************************************************************
* vlc_UrlParse:
*****************************************************************************
* option : if != 0 then path is split at this char
*
* format [protocol://[login[:password]@]][host[:port]]/path[OPTIONoption]
*****************************************************************************/
static inline void vlc_UrlParse( vlc_url_t *url, const char *psz_url,
char option )
{
char *psz_dup;
char *psz_parse;
char *p;
char *p2;
url->psz_protocol = NULL;
url->psz_username = NULL;
url->psz_password = NULL;
url->psz_host = NULL;
url->i_port = 0;
url->psz_path = NULL;
url->psz_option = NULL;
if( psz_url == NULL )
{
url->psz_buffer = NULL;
return;
}
url->psz_buffer = psz_parse = psz_dup = strdup( psz_url );
/* Search a valid protocol */
p = strstr( psz_parse, ":/" );
if( p != NULL )
{
for( p2 = psz_parse; p2 < p; p2++ )
{
#define I(i,a,b) ( (a) <= (i) && (i) <= (b) )
if( !I(*p2, 'a', 'z' ) && !I(*p2, 'A', 'Z') && !I(*p2, '0', '9') && *p2 != '+' && *p2 != '-' && *p2 != '.' )
{
p = NULL;
break;
}
#undef I
}
}
if( p != NULL )
{
/* we have a protocol */
/* skip :// */
*p++ = '\0';
if( p[1] == '/' )
p += 2;
url->psz_protocol = psz_parse;
psz_parse = p;
}
p = strchr( psz_parse, '@' );
p2 = strchr( psz_parse, '/' );
if( p != NULL && ( p2 != NULL ? p < p2 : 1 ) )
{
/* We have a login */
url->psz_username = psz_parse;
*p++ = '\0';
psz_parse = strchr( psz_parse, ':' );
if( psz_parse != NULL )
{
/* We have a password */
*psz_parse++ = '\0';
url->psz_password = psz_parse;
decode_URI( url->psz_password );
}
decode_URI( url->psz_username );
psz_parse = p;
}
p = strchr( psz_parse, '/' );
if( !p || psz_parse < p )
{
/* We have a host[:port] */
url->psz_host = strdup( psz_parse );
if( p )
{
url->psz_host[p - psz_parse] = '\0';
}
if( *url->psz_host == '[' )
{
/* Ipv6 address */
p2 = strchr( url->psz_host, ']' );
if( p2 )
{
p2 = strchr( p2, ':' );
}
}
else
{
p2 = strchr( url->psz_host, ':' );
}
if( p2 )
{
*p2++ = '\0';
url->i_port = atoi( p2 );
}
}
psz_parse = p;
/* Now parse psz_path and psz_option */
if( psz_parse )
{
url->psz_path = psz_parse;
if( option != '\0' )
{
p = strchr( url->psz_path, option );
if( p )
{
*p++ = '\0';
url->psz_option = p;
}
}
}
}
/*****************************************************************************
* vlc_UrlClean:
*****************************************************************************/
static inline void vlc_UrlClean( vlc_url_t *url )
{
free( url->psz_buffer );
free( url->psz_host );
url->psz_protocol = NULL;
url->psz_username = NULL;
url->psz_password = NULL;
url->psz_host = NULL;
url->i_port = 0;
url->psz_path = NULL;
url->psz_option = NULL;
url->psz_buffer = NULL;
}
#include <ctype.h>
/** Check whether a given string is not a valid URL and must hence be
* encoded */
static inline int vlc_UrlIsNotEncoded( const char *psz_url )
{
const char *ptr;
for( ptr = psz_url; *ptr; ptr++ )
{
unsigned char c = *ptr;
if( c == '%' )
{
if( !isxdigit( (unsigned char)ptr[1] )
|| !isxdigit( (unsigned char)ptr[2] ) )
return 1; /* not encoded */
ptr += 2;
}
else
if( ( (unsigned char)( c - 'a' ) < 26 )
|| ( (unsigned char)( c - 'A' ) < 26 )
|| ( (unsigned char)( c - '0' ) < 10 )
|| ( strchr( "-_.", c ) != NULL ) )
return 1;
}
return 0; /* looks fine - but maybe it is not encoded */
}
#endif