src/cli_lldp.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
  21 #include "mz.h"
  22 #include "cli.h"
  23 #include "mops.h"
  24
  25
  26 int cmd_lldp_conformance (struct cli_def *cli, char *command, char *argv[], int argc)
  27 {
  28         struct mops_ext_lldp * pd = clipkt->p_desc;
  29
  30
  31         if ( (strcmp(argv[argc-1],"?")==0) || (argc!=1)) {
  32                 cli_print(cli, "Enables or disables LLDP standard conformance mode.\n");
  33                 cli_print(cli, "Keywords: enable | disable\n");
  34                 cli_print(cli, "Per default, standard LLDP messages are created which require a fixed\r");
  35                 cli_print(cli, "order of the mandatory TLVs. If the standard conformance mode is disabled\r");
  36                 cli_print(cli, "then you can configure an arbitrary sequence of LLDP TLVs. \n");
  37                 cli_print(cli, "Currently, the LLDP standard conformance mode is %s\n", (pd->non_conform) ? "DISABLED" : "ENABLED");
  38                 return CLI_OK;
  39         }
  40
  41         if (mz_strcmp(argv[0], "enable", 1)==0) {
  42                 pd->non_conform = 0;
  43                 return CLI_OK;
  44         }
  45
  46
  47         if (mz_strcmp(argv[0], "disable", 1)==0) {
  48                 pd->non_conform = 1;
  49                 return CLI_OK;
  50         }
  51
  52         cli_print(cli, "Enter enable or disable\n");
  53         return CLI_OK;
  54 }
  55
  56
  57 int cmd_lldp_chassis_id (struct cli_def *cli, char *command, char *argv[], int argc)
  58 {
  59         struct mops_ext_lldp * pd = clipkt->p_desc;
  60         int subtype = 4;
  61         char *cid;
  62         int cl, cidl;
  63         u_int8_t tmp[512];
  64
  65         if ( (strcmp(argv[argc-1],"?")==0) || (argc>2)) {
  66                 cli_print(cli, "Configure a Chassis ID TLV.\n");
  67                 cli_print(cli, "ARGUMENTS: [<subtype>] <chassis-id>\n");
  68                 cli_print(cli, "By default the <subtype> is of kind 'mac address (4)' and the <chassis-id>\r");
  69                 cli_print(cli, "must be a hexadecimal string (e. g. 00:01:ca:fe:de:ad) of max 255 bytes\n");
  70                 return CLI_OK;
  71         }
  72
  73         if (argc==2) {
  74                 subtype = (int) str2int(argv[0]);
  75                 if ((subtype>255) || (mz_strisnum(argv[0])==0)) {
  76                         cli_print(cli, "Invalid subtype\n");
  77                         return CLI_OK;
  78                 }
  79                 cid = argv[1];
  80         } else
  81                 cid = argv[0];
  82
  83         cl=strnlen(cid, 1024);
  84
  85         if (cl>=1024) {
  86                 cli_print(cli, "Chassis-ID too long\n");
  87                 return CLI_OK;
  88         } else cidl=str2hex(cid, tmp, 511);
  89
  90         if (pd->non_conform == 0) {
  91                 pd->chassis_id_subtype = subtype;
  92                 memcpy((void*) pd->chassis_id, (void*)tmp, cidl);
  93                 pd->chassis_id_len = cidl;
  94         } else {
  95                 // non_conform
  96                 mops_lldp_opt_tlv_chassis (clipkt, subtype, cidl, tmp);
  97         }
  98
  99         return CLI_OK;
 100 }
 101
 102
 103
 104
 105 int cmd_lldp_port_id (struct cli_def *cli, char *command, char *argv[], int argc)
 106 {
 107         struct mops_ext_lldp * pd = clipkt->p_desc;
 108         int subtype = 4;
 109         char *pid;
 110         int pl;
 111
 112         if ( (strcmp(argv[argc-1],"?")==0) || (argc>2)) {
 113                 cli_print(cli, "Configure a Port ID TLV.\n");
 114                 cli_print(cli, "ARGUMENTS: [<subtype>] <port-id>\n");
 115                 cli_print(cli, "By default the <subtype> is of kind 'Interface name (5)' and the <port-id>\r");
 116                 cli_print(cli, "must be a ascii string (usually the name of the interface e. g. eth3) of\r");
 117                 cli_print(cli, "max 255 bytes.\n");
 118                 return CLI_OK;
 119         }
 120
 121         if (argc==2) {
 122                 subtype = (int) str2int(argv[0]);
 123                 if ((subtype>255) || (mz_strisnum(argv[0])==0)) {
 124                         cli_print(cli, "Invalid subtype\n");
 125                         return CLI_OK;
 126                 }
 127                 pid = argv[1];
 128         } else
 129                 pid = argv[0];
 130
 131         pl=strnlen(pid, 256);
 132
 133         if (pl>255) {
 134                 cli_print(cli, "Port-ID too long\n");
 135                 return CLI_OK;
 136         }
 137
 138
 139         if (pd->non_conform == 0) {
 140                 pd->port_id_subtype = subtype;
 141                 memcpy((void*) pd->port_id, (void*) pid, pl);
 142                 pd->port_id_len = pl;
 143         } else {
 144                 // non_conform
 145                 mops_lldp_opt_tlv_port (clipkt, subtype, pl, (u_int8_t*) pid);
 146         }
 147
 148         return CLI_OK;
 149 }
 150
 151
 152
 153 int cmd_lldp_ttl (struct cli_def *cli, char *command, char *argv[], int argc)
 154 {
 155         struct mops_ext_lldp * pd = clipkt->p_desc;
 156         int ttl;
 157
 158         if ( (strcmp(argv[argc-1],"?")==0) || (argc!=1)) {
 159                 cli_print(cli, "Configure the LLDP TTL.\n");
 160                 cli_print(cli, "ARGUMENTS: <time-to-live>\n");
 161                 cli_print(cli, "The TTL must be within 0..65535\n");
 162                 return CLI_OK;
 163         }
 164
 165         ttl = (int) str2int(argv[0]);
 166
 167         if (mz_strisnum(argv[0])==0) {
 168                 cli_print(cli, "Invalid argument\n");
 169                 return CLI_OK;
 170         }
 171
 172         if (ttl>0xffff) {
 173                 cli_print(cli, "TTL must be within 0..65535\n");
 174                 return CLI_OK;
 175         }
 176
 177         if (pd->non_conform == 0) {
 178                 pd->TTL = ttl;
 179         } else {
 180                 // non_conform
 181                 mops_lldp_opt_tlv_TTL (clipkt, ttl);
 182         }
 183
 184         return CLI_OK;
 185 }
 186
 187
 188
 189 int cmd_lldp_vlan (struct cli_def *cli, char *command, char *argv[], int argc)
 190 {
 191         int vlan;
 192
 193         if ( (strcmp(argv[argc-1],"?")==0) || (argc!=1)) {
 194                 cli_print(cli, "Configure the LLDP Port VLAN-ID.\n");
 195                 cli_print(cli, "ARGUMENTS: <vlan-id>\n");
 196                 cli_print(cli, "The vlan-id must be within 0..65535\n");
 197                 return CLI_OK;
 198         }
 199
 200         vlan = (int) str2int(argv[0]);
 201
 202         if (mz_strisnum(argv[0])==0) {
 203                 cli_print(cli, "Invalid argument\n");
 204                 return CLI_OK;
 205         }
 206
 207         if (vlan>0xffff) {
 208                 cli_print(cli, "The VLAN-ID must be within 0..65535\n");
 209                 return CLI_OK;
 210         }
 211
 212
 213         mops_lldp_opt_tlv_vlan (clipkt, vlan);
 214
 215         return CLI_OK;
 216 }
 217
 218
 219
 220 int cmd_lldp_opt_tlv (struct cli_def *cli, char *command, char *argv[], int argc)
 221 {
 222         int type=0, len=0;
 223         u_int8_t tmp[512];
 224
 225
 226         if ( (strcmp(argv[argc-1],"?")==0) || (argc!=3)) {
 227                 cli_print(cli, "Configure an arbitrary optional TLV.\n");
 228                 cli_print(cli, "ARGUMENTS: ascii|hex <type> <value>\n");
 229                 cli_print(cli, "The TLV type must be between 0..127, the value length is up to 511 bytes.\n");
 230                 return CLI_OK;
 231         }
 232
 233
 234         if (mz_strcmp(argv[0], "ascii", 1)==0) {
 235                 if ((len=strnlen(argv[2],512))>511) {
 236                         cli_print(cli, "<value> must be smaller or equal 511 characters\n");
 237                         return CLI_OK;
 238                 }
 239                 mz_strncpy((char*) tmp, argv[2], 511);
 240         } else if (mz_strcmp(argv[0], "hex", 1)==0) {
 241                 len=str2hex(argv[2], tmp, 512);
 242                 if (len>511) {
 243                         cli_print(cli, "<value> must be smaller or equal 511 bytes\n");
 244                         return CLI_OK;
 245                 }
 246         }
 247
 248         type = (int) str2int(argv[1]);
 249
 250         if (mz_strisnum(argv[1])==0) {
 251                 cli_print(cli, "Invalid type\n");
 252                 return CLI_OK;
 253         }
 254
 255         if (type>127) {
 256                 cli_print(cli, "<type> must be within 0..127\n");
 257                 return CLI_OK;
 258         }
 259
 260
 261         if (mops_lldp_opt_tlv (clipkt, type, len, tmp)==0)
 262                 cli_print(cli, "Invalid TLV values\n");
 263
 264         return CLI_OK;
 265 }
 266
 267
 268
 269
 270 int cmd_lldp_opt_tlv_bad (struct cli_def *cli, char *command, char *argv[], int argc)
 271 {
 272         int type, len=0, wronglen;
 273         u_int8_t tmp[512];
 274
 275
 276         if ( (strcmp(argv[argc-1],"?")==0) || (argc!=4)) {
 277                 cli_print(cli, "Configure an arbitrary optional *BAD* TLV.\n");
 278                 cli_print(cli, "ARGUMENTS: ascii|hex <type> <wrong-length> <value>\n");
 279                 cli_print(cli, "Using this command you can add a custom TLV with a wrong length parameter.\r");
 280                 cli_print(cli, "Such TLV can be used to verify whether LLDP receivers are robust enough\r\r");
 281                 cli_print(cli, "since a too small <wrong-length> could cause a buffer overflow. The TLV type\r");
 282                 cli_print(cli, "must be between 0..127, the <wrong-length> can be within 0..511 (and can be\r");
 283                 cli_print(cli, "also the true length of course\n");
 284                 return CLI_OK;
 285         }
 286
 287
 288         if (mz_strcmp(argv[0], "ascii", 1)==0) {
 289                 if ((len=strnlen(argv[3],512))>511) {
 290                         cli_print(cli, "<value> must be smaller or equal 511 characters\n");
 291                         return CLI_OK;
 292                 }
 293                 mz_strncpy((char*) tmp, argv[3], 511);
 294         } else if (mz_strcmp(argv[0], "hex", 1)==0) {
 295                 len=str2hex(argv[3], tmp, 512);
 296                 if (len>511) {
 297                         cli_print(cli, "<value> must be smaller or equal 511 bytes\n");
 298                         return CLI_OK;
 299                 }
 300         }
 301
 302         type = (int) str2int(argv[1]);
 303
 304         if (mz_strisnum(argv[1])==0) {
 305                 cli_print(cli, "Invalid type\n");
 306                 return CLI_OK;
 307         }
 308
 309         if (type>127) {
 310                 cli_print(cli, "<type> must be within 0..127\n");
 311                 return CLI_OK;
 312         }
 313
 314         wronglen = (int) str2int(argv[2]);
 315
 316         if (mz_strisnum(argv[2])==0) {
 317                 cli_print(cli, "Invalid length\n");
 318                 return CLI_OK;
 319         }
 320
 321         if (wronglen>511) {
 322                 cli_print(cli, "<wrong-length> must be within 0..511\n");
 323                 return CLI_OK;
 324         }
 325
 326         if (mops_lldp_opt_tlv_bad (clipkt, type, wronglen, len, tmp)==0)
 327                 cli_print(cli, "Invalid TLV values\n");
 328
 329         return CLI_OK;
 330 }
 331
 332
 333
 334 int cmd_lldp_opt_org (struct cli_def *cli, char *command, char *argv[], int argc)
 335 {
 336         int subtype, len=0, oui=0;
 337         u_int8_t tmp[512];
 338
 339
 340         if ( (strcmp(argv[argc-1],"?")==0) || (argc!=4)) {
 341                 cli_print(cli, "Configure an organisational TLV.\n");
 342                 cli_print(cli, "ARGUMENTS: ascii|hex <oui> <subtype> <value>\n");
 343                 cli_print(cli, "Using this command you can add an arbitrary organisational TLV. The <oui> represents\r");
 344                 cli_print(cli, "the 'Organisational Unique Identifier' and consists of exactly three bytes in hexadecimal\r");
 345                 cli_print(cli, "format, such as '00005e' The <subtype> is a value between <0..255>, and the length of the\r");
 346                 cli_print(cli, "value is up to 507 bytes.\n");
 347                 return CLI_OK;
 348         }
 349
 350
 351         if (mz_strcmp(argv[0], "ascii", 1)==0) {
 352                 if ((len=strnlen(argv[3],512))>511) {
 353                         cli_print(cli, "<value> must be smaller or equal 511 characters\n");
 354                         return CLI_OK;
 355                 }
 356                 mz_strncpy((char*) tmp, argv[3], 511);
 357         } else if (mz_strcmp(argv[0], "hex", 1)==0) {
 358                 len=str2hex(argv[3], tmp, 512);
 359                 if (len>511) {
 360                         cli_print(cli, "<value> must be smaller or equal 511 bytes\n");
 361                         return CLI_OK;
 362                 }
 363         }
 364
 365         oui = xstr2int(argv[1]);
 366         if (mz_strishex(argv[1])==0) {
 367                 cli_print(cli, "Invalid oui value\n");
 368                 return CLI_OK;
 369         }
 370
 371         if (oui>0xffffff) {
 372                 cli_print(cli, "<oui> must be within 0..ffffff\n");
 373                 return CLI_OK;
 374         }
 375
 376         subtype = (int) str2int(argv[2]);
 377
 378         if (mz_strisnum(argv[2])==0) {
 379                 cli_print(cli, "Invalid subtype\n");
 380                 return CLI_OK;
 381         }
 382
 383         if (subtype>255) {
 384                 cli_print(cli, "<subtype> must be within 0..255\n");
 385                 return CLI_OK;
 386         }
 387
 388
 389         if (mops_lldp_opt_tlv_org (clipkt, oui, subtype, len, tmp)==0)
 390                 cli_print(cli, "Invalid TLV values\n");
 391
 392         return CLI_OK;
 393 }
 394
 395
 396
 397
 398
 399 int cmd_lldp_endtlv (struct cli_def *cli, char *command, char *argv[], int argc)
 400 {
 401
 402         if ( (strcmp(argv[argc-1],"?")==0) || (argc>0)) {
 403                 cli_print(cli, "Add an 'End of LLDP' TLV\n");
 404                 cli_print(cli, "ARGUMENTS: none\n");
 405                 cli_print(cli, "This command allows you to insert an 'End of LLDP' TLV at any\r");
 406                 cli_print(cli, "point within the optional TLV list. You usually want this to\r");
 407                 cli_print(cli, "create an invalid LLDPU to test the receiver.\n");
 408                 return CLI_OK;
 409         }
 410
 411
 412         mops_lldp_opt_tlv_end (clipkt);
 413
 414         return CLI_OK;
 415 }
 416
 417
 418 int cmd_lldp_reset (struct cli_def *cli, char *command, char *argv[], int argc)
 419 {
 420
 421         if ( (strcmp(argv[argc-1],"?")==0) || (argc>0)) {
 422                 cli_print(cli, "Reset the LLPDU and clear all optional TLVs.\n");
 423                 cli_print(cli, "ARGUMENTS: none\n");
 424                 cli_print(cli, "All optional TLVs are added in the sequence as you configure them.\r");
 425                 cli_print(cli, "Use this command to reset the LLDP and reconfigure all optional\r");
 426                 cli_print(cli, "TLVs again. Additionally the parameters of the mandatory TLVs are\r");
 427                 cli_print(cli, "reset to defaults.\n");
 428                 return CLI_OK;
 429         }
 430
 431         mops_init_pdesc_lldp(clipkt);
 432
 433         return CLI_OK;
 434 }
 435
 436
 437