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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. void    ip_driver_receiver( ipc_callid_t iid, ipc_call_t * icall );
  79. int ip_device_state_msg( int il_phone, device_id_t device_id, device_state_t state );
  80. int ip_register( int il_phone, int protocol, int phone );
  81.  
  82. /** Initializes the module.
  83.  */
  84. int ip_initialize( void ){
  85.     ERROR_DECLARE;
  86.  
  87.     ERROR_PROPAGATE( ip_netifs_initialize( & ip_globals.netifs ));
  88.     ERROR_PROPAGATE( ip_protos_initialize( & ip_globals.protos ));
  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_driver_receiver );
  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. void ip_driver_receiver( ipc_callid_t iid, ipc_call_t * icall ){
  196.     ERROR_DECLARE;
  197.  
  198.     ipc_callid_t    callid;
  199.     ipc_call_t  call;
  200. //  ipc_call_t  answer;
  201. //  int     count;
  202.     int     result;
  203.     packet_t    packet;
  204.  
  205.     /*
  206.      * Accept the connection
  207.      *  - Answer the first IPC_M_CONNECT_ME_TO call.
  208.      */
  209.     ipc_answer_0( iid, EOK );
  210.  
  211.     while( true ){
  212. /*      // refresh data
  213.         count = 0;
  214.         IPC_SET_RETVAL( answer, 0 );
  215.         // just to be precize
  216.         IPC_SET_RETVAL( answer, 0 );
  217.         IPC_SET_ARG1( answer, 0 );
  218.         IPC_SET_ARG2( answer, 0 );
  219.         IPC_SET_ARG3( answer, 0 );
  220.         IPC_SET_ARG4( answer, 0 );
  221.         IPC_SET_ARG5( answer, 0 );
  222. */
  223.         callid = async_get_call( & call );
  224.         switch( IPC_GET_METHOD( call )){
  225.             case NET_IL_DEVICE_STATE:
  226.             case NET_NIL_DEVICE_STATE:
  227.                 result = ip_device_state_msg( 0, IPC_GET_DEVICE( & call ), IPC_GET_STATE( & call ));
  228.                 ipc_answer_0( callid, result );
  229.                 break;
  230.             // TODO packer received
  231.             case NET_IL_RECEIVED:
  232.             case NET_NIL_RECEIVED:
  233.                 if( ! ERROR_OCCURRED( result = packet_translate( ip_globals.net_phone, & packet, IPC_GET_PACKET( & call )))){
  234.                     //result = il_receive_msg( 0, IPC_GET_DEVICE( call ), packet );
  235.                 }
  236.                 ipc_answer_0( callid, result );
  237.                 break;
  238.         }
  239.     }
  240. }
  241.  
  242. int ip_device_state_msg( int il_phone, device_id_t device_id, device_state_t state ){
  243. //  ERROR_DECLARE;
  244.  
  245.     ip_netif_ref    netif;
  246.  
  247. /*  measured_string_t address;
  248.     measured_string_ref translation;
  249.     char *          data;
  250. */
  251.     netif = ip_netifs_find( & ip_globals.netifs, device_id );
  252.     if( ! netif ) return ENOENT;
  253.     // TODO state
  254.     printf( "ip - device %d changed state to %d\n\n", device_id, state );
  255. /*  if( netif->arp ){
  256.         address.value = ( char * ) & netif->gateway;
  257.         address.length = CONVERT_SIZE( in_addr_t, char, 1 );
  258.         if( ERROR_OCCURRED( arp_translate_req( netif->arp->phone, netif->device_id, SERVICE_IP, & address, & translation, & data ))){
  259.             sleep( 2 );
  260.             ERROR_PROPAGATE( arp_translate_req( netif->arp->phone, netif->device_id, SERVICE_IP, & address, & translation, & data ));
  261.         }
  262.         printf( "\tgateway translated to\t= %X:%X:%X:%X:%X:%X\n", data[ 0 ], data[ 1 ], data[ 2 ], data[ 3 ], data[ 4 ], data[ 5 ] );
  263.         free( translation );
  264.         free( data );
  265.     }
  266. */  return EOK;
  267. }
  268.  
  269. int ip_bind_service( services_t service, services_t me, async_client_conn_t receiver ){
  270.     //TODO receive function
  271.     return EOK;
  272. }
  273.  
  274. int ip_connect_module( services_t service ){
  275.     return EOK;
  276. }
  277.  
  278. int ip_register( int il_phone, int protocol, int phone ){
  279.     ip_proto_ref    proto;
  280.     int             index;
  281.  
  282.     proto = ( ip_proto_ref ) malloc( sizeof( ip_protos_t ));
  283.     if( ! proto ) return ENOMEM;
  284.     proto->protocol = protocol;
  285.     proto->phone = phone;
  286.     index = ip_protos_add( & ip_globals.protos, proto->protocol, proto );
  287.     if( index < 0 ){
  288.         free( proto );
  289.         return index;
  290.     }
  291.     printf( "New protocol registered:\n\tprotocol\t= %d\n\tphone\t= %d\n", proto->protocol, proto->phone );
  292.     return EOK;
  293. }
  294.  
  295. int ip_send_msg( int il_phone, device_id_t device_id, packet_t packet, services_t target ){
  296.     // TODO send packet
  297.     printf( "Packet to send via %d: %s\n", device_id, packet_get_data( packet ));
  298.     pq_release( ip_globals.net_phone, packet_get_id( packet ));
  299.     return EOK;
  300. }
  301.  
  302. int ip_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
  303.     ERROR_DECLARE;
  304.  
  305.     packet_t    packet;
  306.  
  307.     * answer_count = 0;
  308.     switch( IPC_GET_METHOD( * call )){
  309.         case IPC_M_PHONE_HUNGUP:
  310.             return EOK;
  311.         case NET_IL_DEVICE:
  312.             return ip_device_req( 0, IPC_GET_DEVICE( call ), IPC_GET_SERVICE( call ));
  313.         case IPC_M_CONNECT_TO_ME:
  314.             return ip_register( 0, IL_GET_PROTO( call ), IPC_GET_PHONE( call ));
  315.         case NET_IL_SEND:
  316.             ERROR_PROPAGATE( packet_translate( ip_globals.net_phone, & packet, IPC_GET_PACKET( call )));
  317.             return ip_send_msg( 0, IPC_GET_DEVICE( call ), packet, 0 );
  318.     }
  319.     return ENOTSUP;
  320. }
  321.  
  322. /** @}
  323.  */
  324.