-/*******************************************************************************
+/*****************************************************************************
* netutils.c: various network functions
- * (c)1999 VideoLAN
- *******************************************************************************
- * ??
- *******************************************************************************
- * Required headers:
- * <netinet/in.h>
- *******************************************************************************/
-
-/*******************************************************************************
+ *****************************************************************************
+ * Copyright (C) 1999, 2000, 2001 VideoLAN
+ *
+ * Authors: Vincent Seguin <seguin@via.ecp.fr>
+ * Benoit Steiner <benny@via.ecp.fr>
+ * Henri Fallon <henri@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
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
* Preamble
- *******************************************************************************/
-#include <netdb.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <sys/socket.h>
+ *****************************************************************************/
+#include "defs.h"
+
+#include <netdb.h> /* gethostbyname() */
+#include <stdlib.h> /* free(), realloc(), atoi() */
+#include <errno.h> /* errno() */
+#include <string.h> /* bzero(), bcopy() */
+#include <unistd.h> /* gethostname() */
+
+#include <netinet/in.h> /* BSD: struct in_addr */
+#include <sys/socket.h> /* BSD: struct sockaddr */
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h> /* inet_ntoa(), inet_aton() */
+#endif
+
+#if defined (HAVE_NET_IF_H)
+#include <net/if.h> /* interface (arch-dependent) */
+#endif
+
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
#include "config.h"
#include "common.h"
#include "mtime.h"
+#include "threads.h"
#include "intf_msg.h"
-#include "debug.h"
+
+#ifndef SYS_BEOS /* I need help for the BeOS portage */
#include "netutils.h"
-/*******************************************************************************
- * BuildInetAddr: build an Internet address descriptor
- *******************************************************************************
- * Build an internet socket descriptor from a host name, or an ip, and a port.
- * If the address is NULL, then INADDR_ANY will be used, allowing to receive
- * on any address for a local socket. Usually, in this case, 'port' is also null
- * and the function always succeeds.
- *******************************************************************************/
-int BuildInetAddr( struct sockaddr_in *p_sa_in, char *psz_in_addr, int i_port )
+/*****************************************************************************
+ * input_BuildLocalAddr : fill a sockaddr_in structure for local binding
+ *****************************************************************************/
+int network_BuildLocalAddr( struct sockaddr_in * p_socket, int i_port,
+ boolean_t b_broadcast )
{
- struct hostent *p_hostent; /* host descriptor */
-
- bzero( p_sa_in, sizeof( struct sockaddr_in ) );
- p_sa_in->sin_family = AF_INET; /* family */
- p_sa_in->sin_port = htons( i_port ); /* port */
-
- /* Use INADDR_ANY if psz_in_addr is NULL */
- if( psz_in_addr == NULL )
- {
- p_sa_in->sin_addr.s_addr = htonl(INADDR_ANY);
- }
- /* Try to convert address directly from in_addr - this will work if
- * psz_in_addr is dotted decimal. */
- else if( !inet_aton( psz_in_addr, &p_sa_in->sin_addr) )
+ char psz_hostname[INPUT_MAX_SOURCE_LENGTH];
+ struct hostent * p_hostent;
+
+ /* Reset struct */
+ memset( p_socket, 0, sizeof( struct sockaddr_in ) );
+ p_socket->sin_family = AF_INET; /* family */
+ p_socket->sin_port = htons( i_port );
+ if( !b_broadcast )
{
- /* The convertion failed: the address is an host name, which needs
- * to be resolved */
- intf_DbgMsg("debug: resolving internet address %s...\n", psz_in_addr);
- if ( (p_hostent = gethostbyname(psz_in_addr)) == NULL)
+ /* Try to get our own IP */
+ if( gethostname( psz_hostname, sizeof(psz_hostname) ) )
{
- intf_ErrMsg("error: unknown host %s\n", psz_in_addr);
- return( -1 );
+ intf_ErrMsg( "BuildLocalAddr : unable to resolve local name : %s",
+ strerror( errno ) );
+ return( -1 );
}
- /* Copy the first address of the host in the socket address */
- bcopy( p_hostent->h_addr_list[0], &p_sa_in->sin_addr, p_hostent->h_length);
- }
- return( 0 );
-}
-
-
-/*******************************************************************************
- * ServerPort: extract port from a "server:port" adress
- *******************************************************************************
- * Returns the port number in a "server:port" address and replace the ":" by
- * a NUL character, or returns -1.
- *******************************************************************************/
-int ServerPort( char *psz_addr )
-{
- char *psz_index;
-
- /* Scan string for ':' */
- for( psz_index = psz_addr; *psz_index && (*psz_index != ':'); psz_index++ )
- {
- ;
- }
-
- /* If a port number has been found, convert it and return it */
- if( *psz_index == ':' )
- {
- *psz_index = '\0';
- return( atoi( psz_index + 1 ) );
- }
-
- return( - 1 );
-}
-
-
-/*******************************************************************************
- * ReadIfConf: Read the configuration of an interface
- *******************************************************************************
- * i_sockfd must reference a socket open as follow: AF_INET, DOCK_DGRAM, 0
- *******************************************************************************/
-int ReadIfConf(int i_sockfd, if_descr_t* p_ifdescr, char* psz_name)
-{
- struct ifreq ifr_config;
- int i_rc = 0;
-
- ASSERT(p_ifdescr);
- ASSERT(psz_name);
-
- /* Which interface are we interested in ? */
- strcpy(ifr_config.ifr_name, psz_name);
-
- /* Read the flags for that interface */
- i_rc = ioctl(i_sockfd, SIOCGIFFLAGS, (byte_t *)&ifr_config);
- if( !i_rc )
- {
- p_ifdescr->i_flags = ifr_config.ifr_flags;
- intf_DbgMsg("%s flags: 0x%x\n", psz_name, p_ifdescr->i_flags);
}
else
{
- intf_ErrMsg("Cannot read flags for interface %s: %s\n", psz_name,
- strerror(errno));
- return -1;
+ /* Instead of trying to find the broadcast address using non-portable
+ * ioctl, let's bind INADDR_ANY */
+ strncpy(psz_hostname,"0.0.0.0",sizeof(psz_hostname));
}
- /* Read physical address of the interface and store it in our description */
- i_rc = ioctl(i_sockfd, SIOCGIFHWADDR, (byte_t *)&ifr_config);
- if( !i_rc )
- {
- memcpy(&p_ifdescr->sa_phys_addr, &ifr_config.ifr_addr, sizeof(struct sockaddr));
- intf_DbgMsg("%s MAC address: %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", psz_name,
- p_ifdescr->sa_phys_addr.sa_data[0]&0xff,
- p_ifdescr->sa_phys_addr.sa_data[1]&0xff,
- p_ifdescr->sa_phys_addr.sa_data[2]&0xff,
- p_ifdescr->sa_phys_addr.sa_data[3]&0xff,
- p_ifdescr->sa_phys_addr.sa_data[4]&0xff,
- p_ifdescr->sa_phys_addr.sa_data[5]&0xff);
- }
- else
- {
- intf_ErrMsg("Cannot read hardware address for interface %s: %s\n",
- psz_name, strerror(errno));
- return -1;
- }
-
- /* Read IP address of the interface and store it in our description */
- i_rc = ioctl(i_sockfd, SIOCGIFADDR, (byte_t *)&ifr_config);
- if( !i_rc )
- {
- memcpy(&p_ifdescr->sa_net_addr, &ifr_config.ifr_addr, sizeof(struct sockaddr));
- intf_DbgMsg("%s IP address: %s\n", psz_name,
- inet_ntoa(p_ifdescr->sa_net_addr.sin_addr));
- }
- else
- {
- intf_ErrMsg("Cannot read network address for interface %s: %s\n",
- psz_name, strerror(errno));
- return -1;
- }
-
- /* Read broadcast address of the interface and store it in our description */
- if(p_ifdescr->i_flags & IFF_POINTOPOINT)
- {
- intf_DbgMsg("%s doen't not support broadcast\n", psz_name);
- i_rc = ioctl(i_sockfd, SIOCGIFDSTADDR, (byte_t *)&ifr_config);
- }
- else
- {
- intf_DbgMsg("%s supports broadcast\n", psz_name);
- i_rc = ioctl(i_sockfd, SIOCGIFBRDADDR, (byte_t *)&ifr_config);
- }
- if( !i_rc )
- {
- memcpy(&p_ifdescr->sa_bcast_addr, &ifr_config.ifr_addr, sizeof(struct sockaddr));
- intf_DbgMsg("%s broadcast address: %s\n", psz_name,
- inet_ntoa(p_ifdescr->sa_bcast_addr.sin_addr));
- }
- else
+ /* Try to convert address directly from in_addr - this will work if
+ * psz_in_addr is dotted decimal. */
+#ifdef HAVE_ARPA_INET_H
+ if( !inet_aton( psz_hostname, &p_socket->sin_addr) )
+#else
+ if( (p_socket->sin_addr.s_addr = inet_addr( psz_hostname )) == -1 )
+#endif
{
- intf_ErrMsg("Cannot read broadcast address for interface %s: %s\n",
- psz_name, strerror(errno));
- return -1;
+ /* We have a fqdn, try to find its address */
+ if ( (p_hostent = gethostbyname( psz_hostname )) == NULL )
+ {
+ intf_ErrMsg( "BuildLocalAddr: unknown host %s", psz_hostname );
+ return( -1 );
+ }
+
+ /* Copy the first address of the host in the socket address */
+ memcpy( &p_socket->sin_addr, p_hostent->h_addr_list[0],
+ p_hostent->h_length );
}
-
- return i_rc;
+ return( 0 );
}
-
-
-/*******************************************************************************
- * ReadNetConf: Retrieve the network configuration of the host
- *******************************************************************************
- * Only IP interfaces are listed, and only if they are up
- * i_sockfd must reference a socket open as follow: AF_INET, DOCK_DGRAM, 0
- *******************************************************************************/
-int ReadNetConf(int i_sockfd, net_descr_t* p_net_descr)
+/*****************************************************************************
+ * input_BuildRemoteAddr : fill a sockaddr_in structure for remote host
+ *****************************************************************************/
+int network_BuildRemoteAddr( struct sockaddr_in * p_socket, char * psz_server )
{
- struct ifreq* a_ifr_ifconf = NULL;
- struct ifreq* p_ifr_current_if;
- struct ifconf ifc_netconf;
-
- int i_if_number;
- int i_remaining;
- int i_rc = 0;
-
- ASSERT(p_net_descr);
-
- /* Start by assuming we have few than 3 interfaces (i_if_number will
- be incremented by 1 when entering the loop) */
- i_if_number = 2;
-
- /* Retrieve network configuration for that host */
- do
- {
- i_if_number++;
- a_ifr_ifconf = realloc(a_ifr_ifconf, i_if_number*sizeof(struct ifreq));
- ifc_netconf.ifc_len = i_if_number*sizeof(struct ifreq);
- ifc_netconf.ifc_req = a_ifr_ifconf;
-
- i_rc = ioctl(i_sockfd, SIOCGIFCONF, (byte_t*)&ifc_netconf);
- if( i_rc )
- {
- intf_ErrMsg("Cannot read network configuration: %s\n",
- strerror(errno));
- break;
- }
- }
- /* If we detected ifc_len interfaces, this may mean that others have
- been missed because the a_ifr_ifconf was to little, so increase
- it's size and retry */
- while( ifc_netconf.ifc_len >= i_if_number*sizeof(struct ifreq) );
+ struct hostent * p_hostent;
- /* No see what we detected */
- if( !i_rc )
+ /* Reset structure */
+ memset( p_socket, 0, sizeof( struct sockaddr_in ) );
+ p_socket->sin_family = AF_INET; /* family */
+ p_socket->sin_port = htons( 0 ); /* This is for remote end */
+
+ /* Try to convert address directly from in_addr - this will work if
+ * psz_in_addr is dotted decimal. */
+
+#ifdef HAVE_ARPA_INET_H
+ if( !inet_aton( psz_server, &p_socket->sin_addr) )
+#else
+ if( (p_socket->sin_addr.s_addr = inet_addr( psz_server )) == -1 )
+#endif
{
- /* Init the given net_descr_t struct */
- p_net_descr->i_if_number = 0;
- p_net_descr->a_if = NULL;
-
- /* Iterate through the entries of the a_ifr_ifconf table */
- p_ifr_current_if = ifc_netconf.ifc_req;
- for( i_remaining = ifc_netconf.ifc_len / sizeof (struct ifreq);
- i_remaining-- > 0; p_ifr_current_if++ )
+ /* We have a fqdn, try to find its address */
+ if ( (p_hostent = gethostbyname(psz_server)) == NULL )
{
- intf_DbgMsg("Found interface %s\n", p_ifr_current_if->ifr_name);
-
- /* Don't use an interface devoted to an address family other than IP */
- if(p_ifr_current_if->ifr_addr.sa_family != AF_INET)
- continue;
-
- /* Read the status of this interface */
- if( ioctl(i_sockfd, SIOCGIFFLAGS, (byte_t *)p_ifr_current_if) < 0 )
- {
- intf_ErrMsg("Cannot access interface %s: %s\n",
- p_ifr_current_if->ifr_name, strerror(errno));
- i_rc = -1;
- break;
- }
- else
- {
- /* Skip this interface if it is not up or if this is a loopback one */
- if( !p_ifr_current_if->ifr_flags & IFF_UP ||
- p_ifr_current_if->ifr_flags & IFF_LOOPBACK )
- continue;
-
- /* Add an entry to the net_descr struct to store the description of
- that interface */
- p_net_descr->i_if_number++;
- p_net_descr->a_if = realloc(p_net_descr->a_if,
- p_net_descr->i_if_number*sizeof(if_descr_t));
- /* Read the info ??? */
- i_rc = ReadIfConf(i_sockfd, &p_net_descr->a_if[p_net_descr->i_if_number-1],
- p_ifr_current_if->ifr_name);
- }
+ intf_ErrMsg( "BuildRemoteAddr: unknown host %s",
+ psz_server );
+ return( -1 );
}
+
+ /* Copy the first address of the host in the socket address */
+ memcpy( &p_socket->sin_addr, p_hostent->h_addr_list[0],
+ p_hostent->h_length );
}
-
- /* Don't need the a_ifr_ifconf anymore */
- free( a_ifr_ifconf );
- return i_rc;
+ return( 0 );
}
-
+#endif
projects / vlc / blobdiff