/*****************************************************************************
* network.h: interface to communicate with network plug-ins
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
+ * Copyright (C) 2002-2005 the VideoLAN team
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Laurent Aimar <fenrir@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 General Public License as published by
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
+#ifndef __VLC_NETWORK_H
+# define __VLC_NETWORK_H
+
+#if defined( WIN32 )
+# if defined(UNDER_CE) && defined(sockaddr_storage)
+# undef sockaddr_storage
+# endif
+# include <winsock2.h>
+# include <ws2tcpip.h>
+#else
+# if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+# endif
+# if HAVE_NETINET_IN_H
+# include <netinet/in.h>
+# endif
+# if HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+# elif defined( SYS_BEOS )
+# include <net/netdb.h>
+# endif
+# include <netdb.h>
+#endif
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
/*****************************************************************************
* network_socket_t: structure passed to a network plug-in to define the
* kind of socket we want
*****************************************************************************/
struct network_socket_t
{
- unsigned int i_type;
-
- char * psz_bind_addr;
+ const char *psz_bind_addr;
int i_bind_port;
- char * psz_server_addr;
+ const char *psz_server_addr;
int i_server_port;
int i_ttl;
+ int v6only;
+
/* Return values */
int i_handle;
size_t i_mtu;
};
-/* Socket types */
-#define NETWORK_UDP 1
-#define NETWORK_TCP 2
-#define NETWORK_TCP_PASSIVE 3
-
-
typedef struct
{
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_url_t;
/*****************************************************************************
*****************************************************************************
* option : if != 0 then path is split at this char
*
- * format [protocol://][host[:port]]/path[OPTIONoption]
+ * format [protocol://[login[:password]@]][host[:port]]/path[OPTIONoption]
*****************************************************************************/
-static inline void vlc_UrlParse( vlc_url_t *url, char *psz_url, char option )
+static inline void vlc_UrlParse( vlc_url_t *url, const char *psz_url,
+ char option )
{
- char *psz_dup = psz_url ? strdup( psz_url ) : 0;
- char *psz_parse = psz_dup;
+ char *psz_dup;
+ char *psz_parse;
char *p;
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 );
- if( !psz_url ) return;
-
- if( ( p = strstr( psz_parse, ":/" ) ) )
+ p = strstr( psz_parse, ":/" );
+ if( p != NULL )
{
/* we have a protocol */
/* skip :// */
*p++ = '\0';
- if( p[0] == '/' && p[1] == '/' )
- {
+ if( p[1] == '/' )
p += 2;
+ url->psz_protocol = psz_parse;
+ psz_parse = p;
+ }
+ p = strchr( psz_parse, '@' );
+ if( p != NULL )
+ {
+ /* 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;
}
- url->psz_protocol = strdup( psz_dup );
psz_parse = p;
}
/* Now parse psz_path and psz_option */
if( psz_parse )
{
- url->psz_path = strdup( psz_parse );
+ url->psz_path = psz_parse;
if( option != '\0' )
{
p = strchr( url->psz_path, option );
if( p )
{
*p++ = '\0';
- url->psz_option = strdup( p );
+ url->psz_option = p;
}
}
}
- free( psz_dup );
}
/*****************************************************************************
*****************************************************************************/
static inline void vlc_UrlClean( vlc_url_t *url )
{
- if( url->psz_protocol ) free( url->psz_protocol );
- if( url->psz_host ) free( url->psz_host );
- if( url->psz_path ) free( url->psz_path );
- if( url->psz_option ) free( url->psz_option );
+ if( url->psz_buffer ) free( url->psz_buffer );
+ if( url->psz_host ) 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;
+}
+
+static inline int isurlsafe( int c )
+{
+ return ( (unsigned char)( c - 'a' ) < 26 )
+ || ( (unsigned char)( c - 'A' ) < 26 )
+ || ( (unsigned char)( c - '0' ) < 10 )
+ /* Hmm, we should not encode character that are allowed in URLs
+ * (even if they are not URL-safe), nor URL-safe characters.
+ * We still encode some of them because of Microsoft's crap browser.
+ */
+ || ( strchr( "-_.", c ) != NULL );
+}
+
+/*****************************************************************************
+ * vlc_UrlEncode:
+ *****************************************************************************
+ * perform URL encoding
+ * (you do NOT want to do URL decoding - it is not reversible - do NOT do it)
+ *****************************************************************************/
+static inline char *vlc_UrlEncode( const char *psz_url )
+{
+ char *psz_enc, *out;
+ const unsigned char *in;
+
+ psz_enc = (char *)malloc( 3 * strlen( psz_url ) + 1 );
+ if( psz_enc == NULL )
+ return NULL;
+
+ out = psz_enc;
+ for( in = (const unsigned char *)psz_url; *in; in++ )
+ {
+ unsigned char c = *in;
+
+ if( isurlsafe( c ) )
+ *out++ = (char)c;
+ else
+ {
+ *out++ = '%';
+ *out++ = ( ( c >> 4 ) >= 0xA ) ? 'A' + ( c >> 4 ) - 0xA
+ : '0' + ( c >> 4 );
+ *out++ = ( ( c & 0xf ) >= 0xA ) ? 'A' + ( c & 0xf ) - 0xA
+ : '0' + ( c & 0xf );
+ }
+ }
+ *out++ = '\0';
+
+ return (char *)realloc( psz_enc, out - psz_enc );
}
-
+
+/*****************************************************************************
+ * vlc_UrlIsNotEncoded:
+ *****************************************************************************
+ * check if given string is not a valid URL and must hence be encoded
+ *****************************************************************************/
+#include <ctype.h>
+
+static inline int vlc_UrlIsNotEncoded( const char *psz_url )
+{
+ const char *ptr;
+
+ for( ptr = psz_url; *ptr; ptr++ )
+ {
+ char c = *ptr;
+
+ if( c == '%' )
+ {
+ if( !isxdigit( ptr[1] ) || !isxdigit( ptr[2] ) )
+ return 1; /* not encoded */
+ ptr += 2;
+ }
+ else
+ if( !isurlsafe( c ) )
+ return 1;
+ }
+ return 0; /* looks fine - but maybe it is not encoded */
+}
+
/*****************************************************************************
* vlc_b64_encode:
*****************************************************************************
*
*****************************************************************************/
-static inline char *vlc_b64_encode( unsigned char *src )
+static inline char *vlc_b64_encode( char *src )
{
static const char b64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- char *dst = malloc( strlen( src ) * 4 / 3 + 12 );
+ char *dst = (char *)malloc( strlen( src ) * 4 / 3 + 12 );
char *ret = dst;
unsigned i_bits = 0;
unsigned i_shift = 0;
return ret;
}
+/* Portable networking layer communication */
#define net_OpenTCP(a, b, c) __net_OpenTCP(VLC_OBJECT(a), b, c)
VLC_EXPORT( int, __net_OpenTCP, ( vlc_object_t *p_this, const char *psz_host, int i_port ) );
#define net_ListenTCP(a, b, c) __net_ListenTCP(VLC_OBJECT(a), b, c)
-VLC_EXPORT( int, __net_ListenTCP, ( vlc_object_t *p_this, char *psz_localaddr, int i_port ) );
+VLC_EXPORT( int *, __net_ListenTCP, ( vlc_object_t *, const char *, int ) );
#define net_Accept(a, b, c) __net_Accept(VLC_OBJECT(a), b, c)
-VLC_EXPORT( int, __net_Accept, ( vlc_object_t *p_this, int fd_listen, mtime_t i_wait ) );
+VLC_EXPORT( int, __net_Accept, ( vlc_object_t *, int *, mtime_t ) );
#define net_OpenUDP(a, b, c, d, e ) __net_OpenUDP(VLC_OBJECT(a), b, c, d, e)
-VLC_EXPORT( int, __net_OpenUDP, ( vlc_object_t *p_this, char *psz_bind, int i_bind, char *psz_server, int i_server ) );
+VLC_EXPORT( int, __net_OpenUDP, ( vlc_object_t *p_this, const char *psz_bind, int i_bind, const char *psz_server, int i_server ) );
VLC_EXPORT( void, net_Close, ( int fd ) );
+VLC_EXPORT( void, net_ListenClose, ( int *fd ) );
+
+
+/* Functions to read from or write to the networking layer */
+struct virtual_socket_t
+{
+ void *p_sys;
+ int (*pf_recv) ( void *, void *, int );
+ int (*pf_send) ( void *, const void *, int );
+};
+
+#define net_Read(a,b,c,d,e,f) __net_Read(VLC_OBJECT(a),b,c,d,e,f)
+VLC_EXPORT( int, __net_Read, ( vlc_object_t *p_this, int fd, v_socket_t *, uint8_t *p_data, int i_data, vlc_bool_t b_retry ) );
+
+#define net_ReadNonBlock(a,b,c,d,e,f) __net_ReadNonBlock(VLC_OBJECT(a),b,c,d,e,f)
+VLC_EXPORT( int, __net_ReadNonBlock, ( vlc_object_t *p_this, int fd, v_socket_t *, uint8_t *p_data, int i_data, mtime_t i_wait ) );
-#define net_Read(a,b,c,d,e) __net_Read(VLC_OBJECT(a),b,c,d,e)
-VLC_EXPORT( int, __net_Read, ( vlc_object_t *p_this, int fd, uint8_t *p_data, int i_data, vlc_bool_t b_retry ) );
+#define net_Select(a,b,c,d,e,f,g) __net_Select(VLC_OBJECT(a),b,c,d,e,f,g)
+VLC_EXPORT( int, __net_Select, ( vlc_object_t *p_this, int *pi_fd, v_socket_t **, int i_fd, uint8_t *p_data, int i_data, mtime_t i_wait ) );
-#define net_ReadNonBlock(a,b,c,d,e) __net_ReadNonBlock(VLC_OBJECT(a),b,c,d,e)
-VLC_EXPORT( int, __net_ReadNonBlock, ( vlc_object_t *p_this, int fd, uint8_t *p_data, int i_data, mtime_t i_wait ) );
+#define net_Write(a,b,c,d,e) __net_Write(VLC_OBJECT(a),b,c,d,e)
+VLC_EXPORT( int, __net_Write, ( vlc_object_t *p_this, int fd, v_socket_t *, const uint8_t *p_data, int i_data ) );
-#define net_Write(a,b,c,d) __net_Write(VLC_OBJECT(a),b,c,d)
-VLC_EXPORT( int, __net_Write, ( vlc_object_t *p_this, int fd, uint8_t *p_data, int i_data ) );
+#define net_Gets(a,b,c) __net_Gets(VLC_OBJECT(a),b,c)
+VLC_EXPORT( char *, __net_Gets, ( vlc_object_t *p_this, int fd, v_socket_t * ) );
-#define net_Gets(a,b) __net_Gets(VLC_OBJECT(a),b)
-VLC_EXPORT( char *, __net_Gets, ( vlc_object_t *p_this, int fd ) );
+VLC_EXPORT( int, net_Printf, ( vlc_object_t *p_this, int fd, v_socket_t *, const char *psz_fmt, ... ) );
-VLC_EXPORT( int, net_Printf, ( vlc_object_t *p_this, int fd, const char *psz_fmt, ... ) );
+#define net_vaPrintf(a,b,c,d,e) __net_vaPrintf(VLC_OBJECT(a),b,c,d,e)
+VLC_EXPORT( int, __net_vaPrintf, ( vlc_object_t *p_this, int fd, v_socket_t *, const char *psz_fmt, va_list args ) );
+
+
+#if !HAVE_INET_PTON
+/* only in core, so no need for C++ extern "C" */
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
+
+/*****************************************************************************
+ * net_StopRecv/Send
+ *****************************************************************************
+ * Wrappers for shutdown()
+ *****************************************************************************/
+#if defined (SHUT_WR)
+/* the standard way */
+# define net_StopSend( fd ) (void)shutdown( fd, SHUT_WR )
+# define net_StopRecv( fd ) (void)shutdown( fd, SHUT_RD )
+#elif defined (SD_SEND)
+/* the Microsoft seemingly-purposedly-different-for-the-sake-of-it way */
+# define net_StopSend( fd ) (void)shutdown( fd, SD_SEND )
+# define net_StopRecv( fd ) (void)shutdown( fd, SD_RECEIVE )
+#else
+# ifndef SYS_BEOS /* R5 just doesn't have a working shutdown() */
+# warning FIXME: implement shutdown on your platform!
+# endif
+# define net_StopSend( fd ) (void)0
+# define net_StopRecv( fd ) (void)0
+#endif
+
+/* Portable network names/addresses resolution layer */
+
+/* GAI error codes */
+# ifndef EAI_BADFLAGS
+# define EAI_BADFLAGS -1
+# endif
+# ifndef EAI_NONAME
+# define EAI_NONAME -2
+# endif
+# ifndef EAI_AGAIN
+# define EAI_AGAIN -3
+# endif
+# ifndef EAI_FAIL
+# define EAI_FAIL -4
+# endif
+# ifndef EAI_NODATA
+# define EAI_NODATA -5
+# endif
+# ifndef EAI_FAMILY
+# define EAI_FAMILY -6
+# endif
+# ifndef EAI_SOCKTYPE
+# define EAI_SOCKTYPE -7
+# endif
+# ifndef EAI_SERVICE
+# define EAI_SERVICE -8
+# endif
+# ifndef EAI_ADDRFAMILY
+# define EAI_ADDRFAMILY -9
+# endif
+# ifndef EAI_MEMORY
+# define EAI_MEMORY -10
+# endif
+# ifndef EAI_SYSTEM
+# define EAI_SYSTEM -11
+# endif
+
+
+# ifndef NI_MAXHOST
+# define NI_MAXHOST 1025
+# define NI_MAXSERV 32
+# endif
+# define NI_MAXNUMERICHOST 64
+
+# ifndef NI_NUMERICHOST
+# define NI_NUMERICHOST 0x01
+# define NI_NUMERICSERV 0x02
+# define NI_NOFQDN 0x04
+# define NI_NAMEREQD 0x08
+# define NI_DGRAM 0x10
+# endif
+
+# ifndef HAVE_STRUCT_ADDRINFO
+struct addrinfo
+{
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ size_t ai_addrlen;
+ struct sockaddr *ai_addr;
+ char *ai_canonname;
+ struct addrinfo *ai_next;
+};
+# define AI_PASSIVE 1
+# define AI_CANONNAME 2
+# define AI_NUMERICHOST 4
+# endif /* if !HAVE_STRUCT_ADDRINFO */
+
+/*** libidn support ***/
+# ifndef AI_IDN
+# define AI_IDN 0
+# define AI_CANONIDN 0
+# endif
+
+VLC_EXPORT( const char *, vlc_gai_strerror, ( int ) );
+VLC_EXPORT( int, vlc_getnameinfo, ( const struct sockaddr *, int, char *, int, int *, int ) );
+VLC_EXPORT( int, vlc_getaddrinfo, ( vlc_object_t *, const char *, int, const struct addrinfo *, struct addrinfo ** ) );
+VLC_EXPORT( void, vlc_freeaddrinfo, ( struct addrinfo * ) );
+
+/*****************************************************************************
+ * net_AddressIsMulticast: This function returns VLC_FALSE if the psz_addr does
+ * not specify a multicast address or if the address is not a valid address.
+ *****************************************************************************/
+static inline vlc_bool_t net_AddressIsMulticast( vlc_object_t *p_object, const char *psz_addr )
+{
+ struct addrinfo hints, *res;
+ vlc_bool_t b_multicast = VLC_FALSE;
+ int i;
+
+ memset( &hints, 0, sizeof( hints ) );
+ hints.ai_socktype = SOCK_DGRAM; /* UDP */
+ hints.ai_flags = AI_NUMERICHOST;
+
+ i = vlc_getaddrinfo( p_object, psz_addr, 0,
+ &hints, &res );
+ if( i )
+ {
+ msg_Err( p_object, "Invalid node for net_AddressIsMulticast: %s : %s",
+ psz_addr, vlc_gai_strerror( i ) );
+ return VLC_FALSE;
+ }
+
+ if( res->ai_family == AF_INET )
+ {
+#if !defined( SYS_BEOS )
+ struct sockaddr_in *v4 = (struct sockaddr_in *) res->ai_addr;
+ b_multicast = ( ntohl( v4->sin_addr.s_addr ) >= 0xe0000000 )
+ && ( ntohl( v4->sin_addr.s_addr ) <= 0xefffffff );
+#endif
+ }
+#if defined( WIN32 ) || defined( HAVE_GETADDRINFO )
+ else if( res->ai_family == AF_INET6 )
+ {
+ struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)res->ai_addr;
+ b_multicast = IN6_IS_ADDR_MULTICAST( &v6->sin6_addr );
+ }
+#endif
+
+ vlc_freeaddrinfo( res );
+ return b_multicast;
+}
+
+static inline int net_GetSockAddress( int fd, char *address, int *port )
+{
+ struct sockaddr_storage addr;
+ socklen_t addrlen = sizeof( addr );
+
+ return getpeername( fd, (struct sockaddr *)&addr, &addrlen )
+ || vlc_getnameinfo( (struct sockaddr *)&addr, addrlen, address,
+ NI_MAXNUMERICHOST, port, NI_NUMERICHOST )
+ ? VLC_EGENERIC : 0;
+}
+
+static inline int net_GetPeerAddress( int fd, char *address, int *port )
+{
+ struct sockaddr_storage addr;
+ socklen_t addrlen = sizeof( addr );
+
+ return getpeername( fd, (struct sockaddr *)&addr, &addrlen )
+ || vlc_getnameinfo( (struct sockaddr *)&addr, addrlen, address,
+ NI_MAXNUMERICHOST, port, NI_NUMERICHOST )
+ ? VLC_EGENERIC : 0;
+}
+
+# ifdef __cplusplus
+}
+# endif
-#define net_vaPrintf(a,b,c,d) __net_vaPrintf(VLC_OBJECT(a),b,c,d)
-VLC_EXPORT( int, __net_vaPrintf, ( vlc_object_t *p_this, int fd, const char *psz_fmt, va_list args ) );
+#endif
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