| 0,0 → 1,154 |
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| /* |
| * Copyright (c) 2008 Lukas Mejdrech |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - 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. |
| */ |
| |
| /** @addtogroup net_tl |
| * @{ |
| */ |
| |
| /** @file |
| * Transport layer common functions implementation. |
| * @see tl_common.h |
| */ |
| |
| #include <async.h> |
| #include <ipc/services.h> |
| |
| #include "../err.h" |
| |
| #include "../structures/packet/packet.h" |
| #include "../structures/packet/packet_client.h" |
| |
| #include "../include/icmp_interface.h" |
| #include "../include/in.h" |
| #include "../include/in6.h" |
| #include "../include/inet.h" |
| #include "../include/socket_codes.h" |
| #include "../include/socket_errno.h" |
| |
| #include "tl_common.h" |
| |
| int tl_get_address_port( const struct sockaddr * addr, int addrlen, uint16_t * port ){ |
| const struct sockaddr_in * address_in; |
| const struct sockaddr_in6 * address_in6; |
| |
| if( addrlen < sizeof( struct sockaddr )) return EINVAL; |
| switch( addr->sa_family ){ |
| case AF_INET: |
| if( addrlen != sizeof( struct sockaddr_in )) return EINVAL; |
| address_in = ( struct sockaddr_in * ) addr; |
| * port = address_in->sin_port; |
| break; |
| case AF_INET6: |
| if( addrlen != sizeof( struct sockaddr_in6 )) return EINVAL; |
| address_in6 = ( struct sockaddr_in6 * ) addr; |
| * port = address_in6->sin6_port; |
| break; |
| default: |
| return EAFNOSUPPORT; |
| } |
| return EOK; |
| } |
| |
| |
| int tl_set_address_port( struct sockaddr * addr, int addrlen, uint16_t port ){ |
| struct sockaddr_in * address_in; |
| struct sockaddr_in6 * address_in6; |
| size_t length; |
| |
| if( addrlen < 0 ) return EINVAL; |
| length = ( size_t ) addrlen; |
| if( length < sizeof( struct sockaddr )) return EINVAL; |
| switch( addr->sa_family ){ |
| case AF_INET: |
| if( length != sizeof( struct sockaddr_in )) return EINVAL; |
| address_in = ( struct sockaddr_in * ) addr; |
| address_in->sin_port = port; |
| return EOK; |
| case AF_INET6: |
| if( length != sizeof( struct sockaddr_in6 )) return EINVAL; |
| address_in6 = ( struct sockaddr_in6 * ) addr; |
| address_in6->sin6_port = port; |
| return EOK; |
| default: |
| return EAFNOSUPPORT; |
| } |
| } |
| |
| void tl_send_icmp_port_unreachable( int packet_phone, int icmp_phone, packet_t packet, services_t error ){ |
| packet_t next; |
| uint8_t * src; |
| int length; |
| |
| // detach the first packet and release the others |
| next = pq_detach( packet ); |
| if( next ){ |
| pq_release( packet_phone, packet_get_id( next )); |
| } |
| length = packet_get_addr( packet, & src, NULL ); |
| if(( length > 0 ) |
| && ( ! error ) |
| && ( icmp_phone >= 0 ) |
| // set both addresses to the source one (avoids the source address deletion before setting the destination one) |
| && ( packet_set_addr( packet, src, src, ( size_t ) length ) == EOK )){ |
| icmp_destination_unreachable_msg( icmp_phone, ICMP_PORT_UNREACH, 0, packet ); |
| }else{ |
| pq_release( packet_phone, packet_get_id( packet )); |
| } |
| } |
| |
| int tl_socket_read_packet_data( int packet_phone, packet_ref packet, size_t prefix, const packet_dimension_ref dimension, const struct sockaddr * addr, socklen_t addrlen ){ |
| ERROR_DECLARE; |
| |
| ipc_callid_t callid; |
| size_t length; |
| void * data; |
| |
| if( ! dimension ) return EINVAL; |
| // get the data length |
| if( ! ipc_data_write_receive( & callid, & length )) return EINVAL; |
| // get a new packet |
| * packet = packet_get_4( packet_phone, length, dimension->addr_len, prefix + dimension->prefix, dimension->suffix ); |
| if( ! packet ) return ENOMEM; |
| // allocate space in the packet |
| data = packet_suffix( * packet, length ); |
| if( ! data ){ |
| pq_release( packet_phone, packet_get_id( * packet )); |
| return ENOMEM; |
| } |
| // read the data into the packet |
| if( ERROR_OCCURRED( ipc_data_write_finalize( callid, data, length )) |
| // set the packet destination address |
| || ERROR_OCCURRED( packet_set_addr( * packet, NULL, ( uint8_t * ) addr, addrlen ))){ |
| pq_release( packet_phone, packet_get_id( * packet )); |
| return ERROR_CODE; |
| } |
| return ( int ) length; |
| } |
| |
| /** @} |
| */ |
| Property changes: |
|---|
| Added: svn:eol-style |
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| +native |
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| \ No newline at end of property |
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