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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup ip
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  */
  35.  
  36. #include <async.h>
  37. #include <errno.h>
  38. #include <stdio.h>
  39. #include <string.h>
  40.  
  41. #include <ipc/ipc.h>
  42. #include <ipc/services.h>
  43.  
  44. #include "../../err.h"
  45. #include "../../messages.h"
  46. #include "../../modules.h"
  47.  
  48. #include "../../include/net_interface.h"
  49. #include "../../include/sockaddr.h"
  50. #include "../../include/socket.h"
  51. #include "../../include/device.h"
  52. #include "../../include/arp_interface.h"
  53. #include "../../include/nil_interface.h"
  54. #include "../../include/il_interface.h"
  55. #include "../../include/ip_interface.h"
  56. #include "../../structures/measured_strings.h"
  57. #include "../../structures/module_map.h"
  58. #include "../../structures/packet/packet_client.h"
  59.  
  60. #include "../../nil/nil_messages.h"
  61.  
  62. #include "../il_messages.h"
  63.  
  64. #include "ip.h"
  65. #include "ip_module.h"
  66.  
  67. #define DEFAULT_IPV     4
  68.  
  69. #define ARP_NAME                "arp"
  70. #define ARP_FILENAME            "/srv/arp"
  71.  
  72. ip_globals_t    ip_globals;
  73.  
  74. DEVICE_MAP_IMPLEMENT( ip_netifs, ip_netif_t )
  75.  
  76. INT_MAP_IMPLEMENT( ip_protos, ip_proto_t )
  77.  
  78. int ip_device_state_msg( int il_phone, device_id_t device_id, device_state_t state );
  79. int ip_register( int il_phone, int protocol, int phone );
  80.  
  81. /** Initializes the module.
  82.  */
  83. int ip_initialize( async_client_conn_t client_connection ){
  84.     ERROR_DECLARE;
  85.  
  86.     ERROR_PROPAGATE( ip_netifs_initialize( & ip_globals.netifs ));
  87.     ERROR_PROPAGATE( ip_protos_initialize( & ip_globals.protos ));
  88.     ip_globals.client_connection = client_connection;
  89.     ERROR_PROPAGATE( modules_initialize( & ip_globals.modules ));
  90.     ERROR_PROPAGATE( add_module( NULL, & ip_globals.modules, ARP_NAME, ARP_FILENAME, SERVICE_ARP, arp_task_get_id(), arp_connect_module ));
  91.     return EOK;
  92. }
  93.  
  94. int ip_device_req( int il_phone, device_id_t device_id, services_t netif ){
  95.     ERROR_DECLARE;
  96.  
  97.     ip_netif_ref        ip_netif;
  98.     measured_string_t   names[ 9 ] = {{ "IPV", 3 }, { "IP_CONFIG", 9 }, { "IP_ADDR", 7 }, { "NETMASK", 7 }, { "GATEWAY", 7 }, { "BROADCAST", 9 }, { "DNS1", 4 }, { "DNS2", 4 }, { "ARP", 3 }};
  99.     measured_string_ref configuration;
  100.     int                 count = 9;
  101.     char *              data;
  102.     int                 index;
  103.  
  104.     configuration = & names[ 0 ];
  105.     ip_netif = ( ip_netif_ref ) malloc( sizeof( ip_netif_t ));
  106.     if( ! ip_netif ) return ENOMEM;
  107.     ip_netif->device_id = device_id;
  108.     // get configuration
  109.     ERROR_PROPAGATE( net_get_device_conf_req( ip_globals.net_phone, ip_netif->device_id, & configuration, count, & data ));
  110.     if( configuration ){
  111.         if( configuration[ 0 ].value ){
  112.             ip_netif->ipv = strtol( configuration[ 0 ].value, NULL, 0 );
  113.         }else{
  114.             ip_netif->ipv = DEFAULT_IPV;
  115.         }
  116.         ip_netif->dhcp = ! str_lcmp( configuration[ 1 ].value, "dhcp", configuration[ 1 ].length );
  117.         if( ip_netif->dhcp ){
  118.             // TODO dhcp
  119.             net_free_settings( configuration, data );
  120.             free( ip_netif );
  121.             return ENOTSUP;
  122.         }else if( ip_netif->ipv == 4 ){
  123.             if( ERROR_OCCURRED( inet_pton( AF_INET, configuration[ 2 ].value, ( uint8_t * ) & ip_netif->address ))
  124.             || ERROR_OCCURRED( inet_pton( AF_INET, configuration[ 3 ].value, ( uint8_t * ) & ip_netif->netmask ))
  125.             || ( inet_pton( AF_INET, configuration[ 4 ].value, ( uint8_t * ) & ip_netif->gateway ) == EINVAL )
  126.             || ( inet_pton( AF_INET, configuration[ 5 ].value, ( uint8_t * ) & ip_netif->broadcast ) == EINVAL )
  127.             || ( inet_pton( AF_INET, configuration[ 6 ].value, ( uint8_t * ) & ip_netif->dns1 ) == EINVAL )
  128.             || ( inet_pton( AF_INET, configuration[ 7 ].value, ( uint8_t * ) & ip_netif->dns2 ) == EINVAL )){
  129.                 net_free_settings( configuration, data );
  130.                 free( ip_netif );
  131.                 return EINVAL;
  132.             }
  133.         }else{
  134.             // TODO ipv6
  135.             net_free_settings( configuration, data );
  136.             free( ip_netif );
  137.             return ENOTSUP;
  138.         }
  139.         if( configuration[ 8 ].value ){
  140.             ip_netif->arp = get_running_module( & ip_globals.modules, configuration[ 8 ].value );
  141.             if( ! ip_netif->arp ){
  142.                 printf( "Failed to start the arp %s\n", configuration[ 8 ].value );
  143.                 net_free_settings( configuration, data );
  144.                 free( ip_netif );
  145.                 return EINVAL;
  146.             }
  147.         }else{
  148.             ip_netif->arp = NULL;
  149.         }
  150.         net_free_settings( configuration, data );
  151.     }
  152.     ip_netif->phone = bind_service( netif, ip_netif->device_id, SERVICE_IP, 0, ip_globals.client_connection );
  153.     if( ip_netif->phone < 0 ){
  154.         printf( "Failed to contact the nil service %d\n", netif );
  155.         free( ip_netif );
  156.         return ip_netif->phone;
  157.     }
  158.     if( ip_netif->arp ){
  159.         configuration[ 0 ].value = ( char * ) & ip_netif->address;
  160.         configuration[ 0 ].length = CONVERT_SIZE( in_addr_t, char, 1 );
  161.         if( ERROR_OCCURRED( arp_device_req( ip_netif->arp->phone, ip_netif->device_id, SERVICE_IP, netif, & configuration[ 0 ] ))){
  162.             free( ip_netif );
  163.             return ERROR_CODE;
  164.         }
  165.     }
  166.     index = ip_netifs_add( & ip_globals.netifs, ip_netif->device_id, ip_netif );
  167.     if( index < 0 ){
  168.         free( ip_netif );
  169.         return index;
  170.     }
  171.     if( ip_netif->arp ) ++ ip_netif->arp->usage;
  172.     // print the settings
  173.     printf( "New device registered:\n\tid\t= %d\n\tphone\t= %d\n\tIPV\t= %d\n", ip_netif->device_id, ip_netif->phone, ip_netif->ipv );
  174.     printf( "\tconfiguration\t= %s\n", ip_netif->dhcp ? "dhcp" : "static" );
  175.     // TODO ipv6 addresses
  176.     data = malloc( INET_ADDRSTRLEN );
  177.     if( data ){
  178.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->address, data, INET_ADDRSTRLEN );
  179.         printf( "\taddress\t= %s\n", data );
  180.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->netmask, data, INET_ADDRSTRLEN );
  181.         printf( "\tnetmask\t= %s\n", data );
  182.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->gateway, data, INET_ADDRSTRLEN );
  183.         printf( "\tgateway\t= %s\n", data );
  184.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->broadcast, data, INET_ADDRSTRLEN );
  185.         printf( "\tbroadcast\t= %s\n", data );
  186.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->dns1, data, INET_ADDRSTRLEN );
  187.         printf( "\tdns1\t= %s\n", data );
  188.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->dns2, data, INET_ADDRSTRLEN );
  189.         printf( "\tdns2\t= %s\n", data );
  190.         free( data );
  191.     }
  192.     return EOK;
  193. }
  194.  
  195. int ip_device_state_msg( int il_phone, device_id_t device_id, device_state_t state ){
  196. //  ERROR_DECLARE;
  197.  
  198.     ip_netif_ref    netif;
  199.  
  200. /*  measured_string_t address;
  201.     measured_string_ref translation;
  202.     char *          data;
  203. */
  204.     netif = ip_netifs_find( & ip_globals.netifs, device_id );
  205.     if( ! netif ) return ENOENT;
  206.     // TODO state
  207.     printf( "ip - device %d changed state to %d\n\n", device_id, state );
  208. /*  if( netif->arp ){
  209.         address.value = ( char * ) & netif->gateway;
  210.         address.length = CONVERT_SIZE( in_addr_t, char, 1 );
  211.         if( ERROR_OCCURRED( arp_translate_req( netif->arp->phone, netif->device_id, SERVICE_IP, & address, & translation, & data ))){
  212.             sleep( 2 );
  213.             ERROR_PROPAGATE( arp_translate_req( netif->arp->phone, netif->device_id, SERVICE_IP, & address, & translation, & data ));
  214.         }
  215.         printf( "\tgateway translated to\t= %X:%X:%X:%X:%X:%X\n", data[ 0 ], data[ 1 ], data[ 2 ], data[ 3 ], data[ 4 ], data[ 5 ] );
  216.         free( translation );
  217.         free( data );
  218.     }
  219. */  return EOK;
  220. }
  221.  
  222. int ip_bind_service( services_t service, services_t me, async_client_conn_t receiver ){
  223.     //TODO receive function
  224.     return EOK;
  225. }
  226.  
  227. int ip_connect_module( services_t service ){
  228.     return EOK;
  229. }
  230.  
  231. int ip_register( int il_phone, int protocol, int phone ){
  232.     ip_proto_ref    proto;
  233.     int             index;
  234.  
  235.     proto = ( ip_proto_ref ) malloc( sizeof( ip_protos_t ));
  236.     if( ! proto ) return ENOMEM;
  237.     proto->protocol = protocol;
  238.     proto->phone = phone;
  239.     index = ip_protos_add( & ip_globals.protos, proto->protocol, proto );
  240.     if( index < 0 ){
  241.         free( proto );
  242.         return index;
  243.     }
  244.     printf( "New protocol registered:\n\tprotocol\t= %d\n\tphone\t= %d\n", proto->protocol, proto->phone );
  245.     return EOK;
  246. }
  247.  
  248. int ip_send_msg( int il_phone, device_id_t device_id, packet_t packet, services_t target ){
  249.     // TODO send packet
  250.     printf( "Packet to send via %d: %s\n", device_id, packet_get_data( packet ));
  251.     pq_release( ip_globals.net_phone, packet_get_id( packet ));
  252.     return EOK;
  253. }
  254.  
  255. int ip_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
  256.     ERROR_DECLARE;
  257.  
  258.     packet_t    packet;
  259.  
  260.     * answer_count = 0;
  261.     switch( IPC_GET_METHOD( * call )){
  262.         case IPC_M_PHONE_HUNGUP:
  263.             return EOK;
  264.         case NET_IL_DEVICE:
  265.             return ip_device_req( 0, IPC_GET_DEVICE( call ), IPC_GET_SERVICE( call ));
  266.         case IPC_M_CONNECT_TO_ME:
  267.             return ip_register( 0, IL_GET_PROTO( call ), IPC_GET_PHONE( call ));
  268.         case NET_IL_SEND:
  269.             ERROR_PROPAGATE( packet_translate( ip_globals.net_phone, & packet, IPC_GET_PACKET( call )));
  270.             return ip_send_msg( 0, IPC_GET_DEVICE( call ), packet, 0 );
  271.         case NET_IL_DEVICE_STATE:
  272.         case NET_NIL_DEVICE_STATE:
  273.             return ip_device_state_msg( 0, IPC_GET_DEVICE( call ), IPC_GET_STATE( call ));
  274.         // TODO packet received
  275.         case NET_IL_RECEIVED:
  276.         case NET_NIL_RECEIVED:
  277.             ERROR_PROPAGATE( packet_translate( ip_globals.net_phone, & packet, IPC_GET_PACKET( call )));
  278.             //return il_receive_msg( 0, IPC_GET_DEVICE( call ), packet );
  279.     }
  280.     return ENOTSUP;
  281. }
  282.  
  283. /** @}
  284.  */
  285.