src/cli_eth.c

   1 /*
   2  * Mausezahn - A fast versatile traffic generator
   3  * Copyright (C) 2008-2010 Herbert Haas
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License version 2 as published by the
   7  * Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
  12  * details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, see http://www.gnu.org/licenses/gpl-2.0.html
  16  *
  17 */
  18
  19
  20 #include "mz.h"
  21 #include "cli.h"
  22 #include "mops.h"
  23
  24
  25
  26
  27
  28 int cmd_packet_mac_address_source (struct cli_def *cli, char *command, char *argv[], int argc)
  29 {
  30    int i,j;
  31
  32    if ( (strcmp(argv[argc-1],"?")==0) || (argc>1) )
  33      {
  34         cli_print(cli, "XX:XX:XX:XX:XX:XX     Configure a source MAC address\n");
  35         cli_print(cli, "Optionally you may use randomly generated (unicast)\r");
  36         cli_print(cli, "MAC addresses, using the keyword 'random'\n");
  37         return CLI_OK;
  38      }
  39
  40    if (argc==1)
  41      {
  42         if (mz_strcmp(argv[0], "random", 3)==0)
  43           {
  44              clipkt->eth_src_israndom = 1;
  45              return CLI_OK;
  46           }
  47
  48         if (mz_strcmp(argv[0], "default", 3)==0)
  49           {
  50              // find index of device_list with the device configured in clipkt:
  51              i=0;
  52              while (strncmp(device_list[i].dev, clipkt->device, 10) && (i<device_list_entries)) i++;
  53              for (j=0;j<6;j++) clipkt->eth_src[j] = device_list[i].mac_mops[j];
  54              clipkt->eth_src_israndom = 0;
  55              return CLI_OK;
  56           }
  57
  58         if (mops_pdesc_mac(clipkt->eth_src, argv[0]))
  59           {
  60              cli_print(cli,"Invalid MAC address (use format: XX:XX:XX:XX:XX:XX)\n");
  61           }
  62         else // MAC was OK
  63           {
  64              clipkt->eth_src_israndom = 0;
  65           }
  66      }
  67    else
  68      cli_print(cli, "Invalid MAC format!\n");
  69
  70
  71    return CLI_OK;
  72 }
  73
  74
  75
  76 int cmd_packet_mac_address_destination (struct cli_def *cli, char *command, char *argv[], int argc)
  77 {
  78
  79    if ( (strcmp(argv[argc-1],"?")==0) || (argc>1) )
  80      {
  81         cli_print(cli, "XX:XX:XX:XX:XX:XX     Configure a destination MAC address\n");
  82         return CLI_OK;
  83      }
  84    if (argc==1)
  85      {
  86         if (mz_strcmp(argv[0], "bcast", 2)==0)
  87           {
  88              mops_pdesc_mac (clipkt->eth_dst, "ff:ff:ff:ff:ff:ff");
  89              return CLI_OK;
  90           }
  91         else if (mz_strcmp(argv[0], "pvst", 2)==0)
  92           {
  93              mops_pdesc_mac (clipkt->eth_dst, "01:00:0C:CC:CC:CD");
  94              return CLI_OK;
  95           }
  96         else if (mz_strcmp(argv[0], "cisco", 2)==0)
  97           {
  98              mops_pdesc_mac (clipkt->eth_dst, "01:00:0C:CC:CC:CC");
  99              return CLI_OK;
 100           }
 101         else if (mz_strcmp(argv[0], "stp", 2)==0)
 102           {
 103              mops_pdesc_mac (clipkt->eth_dst, "01:80:C2:00:00:00");
 104              return CLI_OK;
 105           }
 106
 107         if (mops_pdesc_mac(clipkt->eth_dst, argv[0]))
 108           {
 109              cli_print(cli,"Invalid MAC address (use format: XX:XX:XX:XX:XX:XX)\n");
 110           }
 111      }
 112    else
 113      cli_print(cli, "Invalid MAC format!\n");
 114
 115    return CLI_OK;
 116 }
 117
 118
 119
 120
 121
 122
 123 int cmd_eth_type (struct cli_def *cli, char *command, char *argv[], int argc)
 124 {
 125    unsigned long int t32;
 126
 127    if ( (strcmp(argv[argc-1],"?")==0) || (argc>1) )
 128      {
 129         cli_print(cli, "Specify the Ethernet type field in hexadecimal format.\n");
 130         cli_print(cli, "For example:\n");
 131         cli_print(cli, "  800   ......... IP\r");
 132         cli_print(cli, "  806   ......... ARP\r");
 133         cli_print(cli, "  835   ......... RARP\r");
 134         cli_print(cli, " 8100   ......... 802.1Q\r");
 135         cli_print(cli, " 888E   ......... 802.1X\r");
 136         cli_print(cli, "\n");
 137         return CLI_OK;
 138      }
 139
 140    if (argc==1)
 141      {
 142         t32 = xstr2int(argv[0]);
 143         if (t32>0xffff)
 144           {
 145              cli_print(cli, "EtherType must not exceed ffff.\n");
 146              return CLI_OK;
 147           }
 148         if (t32<0x800)
 149           {
 150              cli_print(cli, "WARNING: 'Officially' the EtherType must be greater or equal 800.\n");
 151           }
 152
 153         clipkt->eth_type = (u_int16_t) t32;
 154      }
 155    else
 156      {
 157         cli_print(cli, "Only one parameter accepted.\n");
 158      }
 159
 160    return CLI_OK;
 161 }
 162
 163
 164
 165
 166 int cmd_eth_length (struct cli_def *cli, char *command, char *argv[], int argc)
 167 {
 168    unsigned long int t32;
 169
 170    if ( (strcmp(argv[argc-1],"?")==0) || (argc>1) )
 171      {
 172         cli_print(cli, "Specify the 802.3 length field in decimal notation.\r");
 173         cli_print(cli, "\n");
 174         return CLI_OK;
 175      }
 176
 177       if (argc==1)
 178      {
 179         t32 = str2int(argv[0]);
 180         if (t32>0xffff)
 181           {
 182              cli_print(cli, "The length field must not exceed 65535.\n");
 183              return CLI_OK;
 184           }
 185         if (t32>0x7ff)
 186           {
 187              cli_print(cli, "WARNING: 'Officially' the 802.3 length field must not be greater than 1522.\n");
 188           }
 189
 190         clipkt->eth_len = (u_int16_t) t32;
 191      }
 192    else
 193      {
 194         cli_print(cli, "Only one parameter accepted.\n");
 195      }
 196
 197
 198
 199    return CLI_OK;
 200 }
 201
 202
 203
 204
 205
 206 int cmd_eth_llc (struct cli_def *cli, char *command, char *argv[], int argc)
 207 {
 208
 209    if ( (strcmp(argv[argc-1],"?")==0) || (argc>1) )
 210      {
 211         cli_print(cli, "Specify the IEEE 802.2 Logical Link Control (LLC) in hexadecimal format.\n");
 212         return CLI_OK;
 213      }
 214
 215    // DSAP-SSAP-Ctrl
 216    // ***** TODO *****
 217    cli_print(cli, "Not supported in this version.\n");
 218
 219    return CLI_OK;
 220 }
 221
 222
 223
 224
 225 int cmd_eth_snap (struct cli_def *cli, char *command, char *argv[], int argc)
 226 {
 227
 228    u_int8_t
 229      oui[16],
 230      etp[16],
 231      t8[16] = {0xAA, 0xAA, 0x03};
 232
 233
 234    if ( (strcmp(argv[argc-1],"?")==0) || (argc>1) )
 235      {
 236         cli_print(cli, "Specify the SNAP header (OUI+Type) in hexadecimal format\r");
 237         cli_print(cli, "Example: 00:00:0e 08:00\r");
 238         cli_print(cli, "\n");
 239         return CLI_OK;
 240      }
 241
 242    if (argc!=2)
 243      {
 244         cli_print(cli, "Two arguments required: 3-byte OUI and 2-byte EtherType\n");
 245         return CLI_OK;
 246      }
 247
 248    if (str2hex(argv[0], oui, 15)!=3)
 249      {
 250         cli_print(cli, "Three bytes required for the OUI\n");
 251         return CLI_OK;
 252      }
 253
 254    if (str2hex(argv[1], etp, 15)!=2)
 255      {
 256         cli_print(cli, "Two bytes required for the EtherType\n");
 257         return CLI_OK;
 258      }
 259
 260
 261    memcpy(&clipkt->eth_snap[0], &t8, 3);
 262    memcpy(&clipkt->eth_snap[3], &oui, 3);
 263    memcpy(&clipkt->eth_snap[6], &etp, 2);
 264    clipkt->eth_snap_s = 8;
 265
 266
 267
 268    return CLI_OK;
 269 }