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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.  
  40. #include <ipc/ipc.h>
  41. #include <ipc/services.h>
  42.  
  43. #include "../../err.h"
  44. #include "../../messages.h"
  45. #include "../../modules.h"
  46.  
  47. #include "../../include/net_interface.h"
  48. #include "../../include/sockaddr.h"
  49. #include "../../include/socket.h"
  50. #include "../../include/device.h"
  51. #include "../../include/arp_interface.h"
  52. #include "../../include/nil_interface.h"
  53. #include "../../include/il_interface.h"
  54. #include "../../include/ip_interface.h"
  55. #include "../../structures/measured_strings.h"
  56. #include "../../structures/module_map.h"
  57. #include "../../structures/packet/packet_client.h"
  58.  
  59. #include "../../nil/nil_messages.h"
  60.  
  61. #include "../il_messages.h"
  62.  
  63. #include "ip.h"
  64. #include "ip_module.h"
  65.  
  66. #define DEFAULT_IPV     4
  67.  
  68. #define ARP_NAME                "arp"
  69. #define ARP_FILENAME            "/srv/arp"
  70.  
  71. ip_globals_t    ip_globals;
  72.  
  73. DEVICE_MAP_IMPLEMENT( ip_netifs, ip_netif_t )
  74.  
  75. INT_MAP_IMPLEMENT( ip_protos, ip_proto_t )
  76.  
  77. void    ip_driver_receiver( ipc_callid_t iid, ipc_call_t * icall );
  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( void ){
  84.     ERROR_DECLARE;
  85.  
  86.     ERROR_PROPAGATE( ip_netifs_initialize( & ip_globals.netifs ));
  87.     ERROR_PROPAGATE( ip_protos_initialize( & ip_globals.protos ));
  88.     ERROR_PROPAGATE( modules_initialize( & ip_globals.modules ));
  89.     ERROR_PROPAGATE( add_module( NULL, & ip_globals.modules, ARP_NAME, ARP_FILENAME, SERVICE_ARP, arp_task_get_id(), arp_connect_module ));
  90.     return EOK;
  91. }
  92.  
  93. int ip_device_req( int il_phone, device_id_t device_id, services_t service ){
  94.     ERROR_DECLARE;
  95.  
  96.     ip_netif_ref        ip_netif;
  97.     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 }};
  98.     measured_string_ref configuration;
  99.     int                 count = 9;
  100.     char *              data;
  101.     int                 index;
  102.  
  103.     configuration = & names[ 0 ];
  104.     ip_netif = ( ip_netif_ref ) malloc( sizeof( ip_netif_t ));
  105.     if( ! ip_netif ) return ENOMEM;
  106.     ip_netif->device_id = device_id;
  107.     // get configuration
  108.     ERROR_PROPAGATE( net_get_device_conf_req( ip_globals.net_phone, ip_netif->device_id, & configuration, count, & data ));
  109.     if( configuration ){
  110.         if( configuration[ 0 ].value ){
  111.             ip_netif->ipv = strtol( configuration[ 0 ].value, NULL, 0 );
  112.         }else{
  113.             ip_netif->ipv = DEFAULT_IPV;
  114.         }
  115.         ip_netif->dhcp = ! strncmp( configuration[ 1 ].value, "dhcp", 4 );
  116.         if( ip_netif->dhcp ){
  117.             // TODO dhcp
  118.             net_free_settings( configuration, data );
  119.             free( ip_netif );
  120.             return ENOTSUP;
  121.         }else if( ip_netif->ipv == 4 ){
  122.             if( ERROR_OCCURRED( inet_pton( AF_INET, configuration[ 2 ].value, ( uint8_t * ) & ip_netif->address ))
  123.             || ERROR_OCCURRED( inet_pton( AF_INET, configuration[ 3 ].value, ( uint8_t * ) & ip_netif->netmask ))
  124.             || ( inet_pton( AF_INET, configuration[ 4 ].value, ( uint8_t * ) & ip_netif->gateway ) == EINVAL )
  125.             || ( inet_pton( AF_INET, configuration[ 5 ].value, ( uint8_t * ) & ip_netif->broadcast ) == EINVAL )
  126.             || ( inet_pton( AF_INET, configuration[ 6 ].value, ( uint8_t * ) & ip_netif->dns1 ) == EINVAL )
  127.             || ( inet_pton( AF_INET, configuration[ 7 ].value, ( uint8_t * ) & ip_netif->dns2 ) == EINVAL )){
  128.                 net_free_settings( configuration, data );
  129.                 free( ip_netif );
  130.                 return EINVAL;
  131.             }
  132.         }else{
  133.             // TODO ipv6
  134.             net_free_settings( configuration, data );
  135.             free( ip_netif );
  136.             return ENOTSUP;
  137.         }
  138.         if( configuration[ 8 ].value ){
  139.             ip_netif->arp = get_running_module( & ip_globals.modules, configuration[ 8 ].value );
  140.             if( ! ip_netif->arp ){
  141.                 printf( "Failed to start the arp %s\n", configuration[ 8 ].value );
  142.                 net_free_settings( configuration, data );
  143.                 free( ip_netif );
  144.                 return EINVAL;
  145.             }
  146.         }else{
  147.             ip_netif->arp = NULL;
  148.         }
  149.         net_free_settings( configuration, data );
  150.     }
  151.     ip_netif->phone = bind_service( service, ip_netif->device_id, SERVICE_IP, 0, ip_driver_receiver );
  152.     if( ip_netif->phone < 0 ){
  153.         printf( "Failed to contact the nil service %d\n", service );
  154.         free( ip_netif );
  155.         return ip_netif->phone;
  156.     }
  157.     if( ip_netif->arp ){
  158.         configuration[ 0 ].value = ( char * ) & ip_netif->address;
  159.         configuration[ 0 ].length = CONVERT_SIZE( in_addr_t, char, 1 );
  160.         if( ERROR_OCCURRED( arp_device_req( ip_netif->arp->phone, ip_netif->device_id, SERVICE_IP, service, & configuration[ 0 ] ))){
  161.             free( ip_netif );
  162.             return ERROR_CODE;
  163.         }
  164.     }
  165.     index = ip_netifs_add( & ip_globals.netifs, ip_netif->device_id, ip_netif );
  166.     if( index < 0 ){
  167.         free( ip_netif );
  168.         return index;
  169.     }
  170.     if( ip_netif->arp ) ++ ip_netif->arp->usage;
  171.     // print the settings
  172.     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 );
  173.     printf( "\tconfiguration\t= %s\n", ip_netif->dhcp ? "dhcp" : "static" );
  174.     // TODO ipv6 addresses
  175.     data = malloc( INET_ADDRSTRLEN );
  176.     if( data ){
  177.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->address, data, INET_ADDRSTRLEN );
  178.         printf( "\taddress\t= %s\n", data );
  179.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->netmask, data, INET_ADDRSTRLEN );
  180.         printf( "\tnetmask\t= %s\n", data );
  181.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->gateway, data, INET_ADDRSTRLEN );
  182.         printf( "\tgateway\t= %s\n", data );
  183.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->broadcast, data, INET_ADDRSTRLEN );
  184.         printf( "\tbroadcast\t= %s\n", data );
  185.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->dns1, data, INET_ADDRSTRLEN );
  186.         printf( "\tdns1\t= %s\n", data );
  187.         inet_ntop( AF_INET, ( uint8_t * ) & ip_netif->dns2, data, INET_ADDRSTRLEN );
  188.         printf( "\tdns2\t= %s\n", data );
  189.         free( data );
  190.     }
  191.     return EOK;
  192. }
  193.  
  194. void ip_driver_receiver( ipc_callid_t iid, ipc_call_t * icall ){
  195.     ERROR_DECLARE;
  196.  
  197.     ipc_callid_t    callid;
  198.     ipc_call_t  call;
  199. //  ipc_call_t  answer;
  200. //  int     count;
  201.     int     result;
  202.     packet_t    packet;
  203.  
  204.     /*
  205.      * Accept the connection
  206.      *  - Answer the first IPC_M_CONNECT_ME_TO call.
  207.      */
  208.     ipc_answer_0( iid, EOK );
  209.  
  210.     while( true ){
  211. /*      // refresh data
  212.         count = 0;
  213.         IPC_SET_RETVAL( answer, 0 );
  214.         // just to be precize
  215.         IPC_SET_RETVAL( answer, 0 );
  216.         IPC_SET_ARG1( answer, 0 );
  217.         IPC_SET_ARG2( answer, 0 );
  218.         IPC_SET_ARG3( answer, 0 );
  219.         IPC_SET_ARG4( answer, 0 );
  220.         IPC_SET_ARG5( answer, 0 );
  221. */
  222.         callid = async_get_call( & call );
  223.         switch( IPC_GET_METHOD( call )){
  224.             case NET_IL_DEVICE_STATE:
  225.             case NET_NIL_DEVICE_STATE:
  226.                 result = ip_device_state_msg( 0, IPC_GET_DEVICE( & call ), IPC_GET_STATE( & call ));
  227.                 ipc_answer_0( callid, result );
  228.                 break;
  229.             // TODO packer received
  230.             case NET_IL_RECEIVED:
  231.             case NET_NIL_RECEIVED:
  232.                 if( ! ERROR_OCCURRED( result = packet_translate( ip_globals.net_phone, & packet, IPC_GET_PACKET( & call )))){
  233.                     //result = il_receive_msg( 0, IPC_GET_DEVICE( call ), packet );
  234.                 }
  235.                 ipc_answer_0( callid, result );
  236.                 break;
  237.         }
  238.     }
  239. }
  240.  
  241. int ip_device_state_msg( int il_phone, device_id_t device_id, device_state_t state ){
  242.     ERROR_DECLARE;
  243.  
  244.     ip_netif_ref    netif;
  245.  
  246.     measured_string_t address;
  247.     measured_string_ref translation;
  248.     char *          data;
  249.  
  250.     netif = ip_netifs_find( & ip_globals.netifs, device_id );
  251.     if( ! netif ) return ENOENT;
  252.     // TODO state
  253.     printf( "ip - device %d changed state to %d\n\n", device_id, state );
  254.     if( netif->arp ){
  255.         address.value = ( char * ) & netif->gateway;
  256.         address.length = CONVERT_SIZE( in_addr_t, char, 1 );
  257.         ERROR_PROPAGATE( arp_translate_req( netif->arp->phone, netif->device_id, SERVICE_IP, & address, & translation, & data ));
  258.         printf( "\tgateway translated to\t= %X:%X:%X:%X:%X:%X\n", data[ 0 ], data[ 1 ], data[ 2 ], data[ 3 ], data[ 4 ], data[ 5 ] );
  259.         free( translation );
  260.         free( data );
  261.     }
  262.     return EOK;
  263. }
  264.  
  265. int ip_bind_service( services_t service, services_t me, async_client_conn_t receiver ){
  266.     //TODO receive function
  267.     return EOK;
  268. }
  269.  
  270. int ip_connect_module( services_t service ){
  271.     return EOK;
  272. }
  273.  
  274. int ip_register( int il_phone, int protocol, int phone ){
  275.     ip_proto_ref    proto;
  276.     int             index;
  277.  
  278.     proto = ( ip_proto_ref ) malloc( sizeof( ip_protos_t ));
  279.     if( ! proto ) return ENOMEM;
  280.     proto->protocol = protocol;
  281.     proto->phone = phone;
  282.     index = ip_protos_add( & ip_globals.protos, proto->protocol, proto );
  283.     if( index < 0 ){
  284.         free( proto );
  285.         return index;
  286.     }
  287.     printf( "New protocol registered:\n\tprotocol\t= %d\n\tphone\t= %d\n", proto->protocol, proto->phone );
  288.     return EOK;
  289. }
  290.  
  291. int ip_send_msg( int il_phone, device_id_t device_id, packet_t packet, services_t target ){
  292.     // TODO send packet
  293.     printf( "Packet to send via %d: %s\n", device_id, packet_get_data( packet ));
  294.     pq_release( ip_globals.net_phone, packet_get_id( packet ));
  295.     return EOK;
  296. }
  297.  
  298. int ip_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){
  299.     ERROR_DECLARE;
  300.  
  301.     packet_t    packet;
  302.  
  303.     * answer_count = 0;
  304.     switch( IPC_GET_METHOD( * call )){
  305.         case IPC_M_PHONE_HUNGUP:
  306.             return EOK;
  307.         case NET_IL_DEVICE:
  308.             return ip_device_req( 0, IPC_GET_DEVICE( call ), IPC_GET_SERVICE( call ));
  309.         case IPC_M_CONNECT_TO_ME:
  310.             return ip_register( 0, IL_GET_PROTO( call ), IPC_GET_PHONE( call ));
  311.         case NET_IL_SEND:
  312.             ERROR_PROPAGATE( packet_translate( ip_globals.net_phone, & packet, IPC_GET_PACKET( call )));
  313.             return ip_send_msg( 0, IPC_GET_DEVICE( call ), packet, 0 );
  314.     }
  315.     return ENOTSUP;
  316. }
  317.  
  318. /** @}
  319.  */
  320.