packet-radius.c

   1 /* packet-radius.c
   2  * Routines for RADIUS packet disassembly
   3  *
   4  * $Id: packet-radius.c,v 1.13 2000/05/31 05:07:33 guy Exp $
   5  *
   6  * Ethereal - Network traffic analyzer
   7  * By Johan Feyaerts
   8  * Copyright 1999 Johan Feyaerts
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #ifdef HAVE_SYS_TYPES_H
  29 # include <sys/types.h>
  30 #endif
  31
  32 #ifdef HAVE_NETINET_IN_H
  33 #include <netinet/in.h>
  34 #endif
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <ctype.h>
  39 #include <glib.h>
  40 #include "packet.h"
  41 #include "resolv.h"
  42
  43 static int proto_radius = -1;
  44 static int hf_radius_length = -1;
  45 static int hf_radius_code = -1;
  46 static int hf_radius_id =-1;
  47
  48 static gint ett_radius = -1;
  49 static gint ett_radius_avp = -1;
  50
  51 #define UDP_PORT_RADIUS         1645
  52 #define UDP_PORT_RADIUS_NEW     1812
  53 #define UDP_PORT_RADACCT        1646
  54 #define UDP_PORT_RADACCT_NEW    1813
  55
  56 typedef struct _e_radiushdr {
  57         guint8 rh_code;
  58         guint8 rh_ident;
  59         guint16 rh_pktlength;
  60 } e_radiushdr;
  61
  62 typedef struct _e_avphdr {
  63         guint8 avp_type;
  64         guint8 avp_length;
  65 } e_avphdr;
  66
  67 typedef struct _value_value_pair {
  68         guint16 val1;
  69         guint16 val2;
  70 } value_value_pair;
  71
  72 #define RADIUS_ACCESS_REQUEST 1
  73 #define RADIUS_ACCESS_ACCEPT  2
  74 #define RADIUS_ACCESS_REJECT  3
  75 #define RADIUS_ACCOUNTING_REQUEST 4
  76 #define RADIUS_ACCOUNTING_RESPONSE 5
  77 #define RADIUS_ACCESS_CHALLENGE 11
  78 #define RADIUS_STATUS_SERVER 12
  79 #define RADIUS_STATUS_CLIENT 13
  80 #define RADIUS_RESERVED 255
  81
  82 #define RD_TP_USER_NAME 1
  83 #define RD_TP_USER_PASSWORD 2
  84 #define RD_TP_CHAP_PASSWORD 3
  85 #define RD_TP_NAS_IP_ADDRESS 4
  86 #define RD_TP_NAS_PORT 5
  87 #define RD_TP_SERVICE_TYPE 6
  88 #define RD_TP_FRAMED_PROTOCOL 7
  89 #define RD_TP_FRAMED_IP_ADDRESS 8
  90 #define RD_TP_FRAMED_IP_NETMASK 9
  91 #define RD_TP_FRAMED_ROUTING 10
  92 #define RD_TP_FILTER_ID 11
  93 #define RD_TP_FRAMED_MTU 12
  94 #define RD_TP_FRAMED_COMPRESSION 13
  95 #define RD_TP_LOGIN_IP_HOST 14
  96 #define RD_TP_LOGIN_SERVICE 15
  97 #define RD_TP_LOGIN_TCP_PORT 16
  98 #define RD_TP_UNASSIGNED 17
  99 #define RD_TP_REPLY_MESSAGE 18
 100 #define RD_TP_CALLBACK_NUMBER 19
 101 #define RD_TP_CALLBACK_ID 20
 102 #define RD_TP_UNASSIGNED2 21
 103 #define RD_TP_FRAMED_ROUTE 22
 104 #define RD_TP_FRAMED_IPX_NETWORK 23
 105 #define RD_TP_STATE 24
 106 #define RD_TP_CLASS 25
 107 #define RD_TP_VENDOR_SPECIFIC 26
 108 #define RD_TP_SESSION_TIMEOUT 27
 109 #define RD_TP_IDLE_TIMEOUT 28
 110 #define RD_TP_TERMINATING_ACTION 29
 111 #define RD_TP_CALLED_STATION_ID 30
 112 #define RD_TP_CALLING_STATION_ID 31
 113 #define RD_TP_NAS_IDENTIFIER 32
 114 #define RD_TP_PROXY_STATE 33
 115 #define RD_TP_LOGIN_LAT_SERVICE 34
 116 #define RD_TP_LOGIN_LAT_NODE 35
 117 #define RD_TP_LOGIN_LAT_GROUP 36
 118 #define RD_TP_FRAMED_APPLETALK_LINK 37
 119 #define RD_TP_FRAMED_APPLETALK_NETWORK 38
 120 #define RD_TP_FRAMED_APPLETALK_ZONE 39
 121 #define RD_TP_ACCT_STATUS_TYPE 40
 122 #define RD_TP_ACCT_DELAY_TIME 41
 123 #define RD_TP_ACCT_INPUT_OCTETS 42
 124 #define RD_TP_ACCT_OUTPUT_OCTETS 43
 125 #define RD_TP_ACCT_SESSION_ID 44
 126 #define RD_TP_ACCT_AUTHENTIC 45
 127 #define RD_TP_ACCT_SESSION_TIME 46
 128 #define RD_TP_ACCT_INPUT_PACKETS 47
 129 #define RD_TP_ACCT_OUTPUT_PACKETS 48
 130 #define RD_TP_ACCT_TERMINATE_CAUSE 49
 131 #define RD_TP_ACCT_MULTI_SESSION_ID 50
 132 #define RD_TP_ACCT_LINK_COUNT 51
 133 #define RD_TP_CHAP_CHALLENGE 60
 134 #define RD_TP_NAS_PORT_TYPE 61
 135 #define RD_TP_PORT_LIMIT 62
 136 #define RD_TP_LOGIN_LAT_PORT 63
 137 #define RD_TP_TUNNEL_TYPE 64
 138 #define RD_TP_TUNNEL_MEDIUM_TYPE 65
 139 #define RD_TP_TUNNEL_CLIENT_ENDPOINT 66
 140 #define RD_TP_TUNNEL_SERVER_ENDPOINT 67
 141 #define RD_TP_TUNNEL_PASSWORD 69
 142 #define RD_TP_TUNNEL_ASSIGNMENT_ID 82
 143
 144 #define AUTHENTICATOR_LENGTH 16
 145 #define RD_HDR_LENGTH 4
 146
 147
 148 #define RADIUS_STRING 1
 149 #define RADIUS_BINSTRING 2
 150 #define RADIUS_INTEGER4 3
 151 #define RADIUS_IP_ADDRESS 4
 152 #define RADIUS_SERVICE_TYPE 5
 153 #define RADIUS_FRAMED_PROTOCOL 6
 154 #define RADIUS_FRAMED_ROUTING 7
 155 #define RADIUS_FRAMED_COMPRESSION 8
 156 #define RADIUS_LOGIN_SERVICE 9
 157 #define RADIUS_UNKNOWN 10
 158 #define RADIUS_IPX_ADDRESS 11
 159 #define RADIUS_TERMINATING_ACTION 12
 160 #define RADIUS_ACCOUNTING_STATUS_TYPE 13
 161 #define RADIUS_ACCT_AUTHENTIC 14
 162 #define RADIUS_ACCT_TERMINATE_CAUSE 15
 163 #define RADIUS_NAS_PORT_TYPE 16
 164 #define RADIUS_TUNNEL_TYPE 17
 165 #define RADIUS_TUNNEL_MEDIUM_TYPE 18
 166 #define RADIUS_STRING_TAGGED 19
 167 #define RADIUS_VENDOR_SPECIFIC 20
 168
 169 static value_string radius_vals[] = {
 170  {RADIUS_ACCESS_REQUEST, "Access Request"},
 171  {RADIUS_ACCESS_ACCEPT, "Access Accept"},
 172  {RADIUS_ACCESS_REJECT, "Access Reject"},
 173  {RADIUS_ACCOUNTING_REQUEST, "Accounting Request"},
 174  {RADIUS_ACCOUNTING_RESPONSE, "Accounting Response"},
 175  {RADIUS_ACCESS_CHALLENGE, "Accounting challenge"},
 176  {RADIUS_STATUS_SERVER, "StatusServer"},
 177  {RADIUS_STATUS_CLIENT, "StatusClient"},
 178  {RADIUS_RESERVED, "Reserved"},
 179 {0, NULL}};
 180
 181 static value_string radius_service_type_vals[]=
 182 {{1, "Login"},
 183 {2, "Framed"},
 184 {3, "Callback Login"},
 185 {4, "Callback Framed"},
 186 {5, "Outbound"},
 187 {6, "Administrative"},
 188 {7, "NAS Prompt"},
 189 {8, "Authenticate Only"},
 190 {9, "Callback NAS Prompt"},
 191 {10, "Call Check"},
 192 {0,NULL}};
 193
 194 static value_string radius_vendor_specific_vendors[]=
 195 {{5, "ACC"},
 196 {9,"Cisco"},
 197 {123,"Ascend"},
 198 {166,"Shiva"},
 199 {307,"Livingston"},
 200 {429,"3Com"},
 201 {1584,"Bay Networks"},
 202 {0,NULL}};
 203
 204 static value_string radius_framed_protocol_vals[]=
 205 {{1, "PPP"},
 206 {2, "SLIP"},
 207 {3, "Appletalk Remote Access Protocol (ARAP)"},
 208 {4, "Gandalf proprietary Singlelink/Multilink Protocol"},
 209 {5, "Xylogics proprietary IPX/SLIP"},
 210 {6, "X.75 Synchronous"},
 211 {0,NULL}};
 212
 213 static value_string radius_framed_routing_vals[]=
 214 {{1, "Send Routing Packets"},
 215 {2, "Listen for routing packets"},
 216 {3, "Send and Listen"},
 217 {0,"None"},
 218 {0,NULL}};
 219
 220 static value_string radius_framed_compression_vals[]=
 221 {{1, "VJ TCP/IP Header Compression"},
 222 {2, "IPX Header Compression"},
 223 {3, "Stac-LZS compression"},
 224 {0, "None"},
 225 {0,NULL}};
 226
 227 static value_string radius_login_service_vals[]=
 228 {{1, "Rlogin"},
 229 {2, "TCP Clear"},
 230 {3, "Portmaster"},
 231 {4, "LAT"},
 232 {5, "X.25-PAD"},
 233 {6, "X.25T3POS"},
 234 {8, "TCP Clear Quit"},
 235 {0, "Telnet"},
 236 {0,NULL}};
 237
 238 static value_string radius_terminating_action_vals[]=
 239 {{1, "RADIUS-Request"},
 240 {0, "Default"},
 241 {0,NULL}};
 242
 243 static value_string radius_accounting_status_type_vals[]=
 244 {{1, "Start"},
 245 {2, "Stop"},
 246 {7,"Accounting-On"},
 247 {8,"Accounting-Off"},
 248 {0,NULL}};
 249
 250 static value_string radius_accounting_authentication_vals[]=
 251 {{1, "Radius"},
 252 {2, "Local"},
 253 {7,"Remote"},
 254 {0,NULL}};
 255
 256 static value_string radius_acct_terminate_cause_vals[]=
 257 {{1, "User Request"},
 258 {2, "Lost Carrier"},
 259 {3,"Lost Service"},
 260 {4, "Idle Timeout"},
 261 {5,"Session Timeout"},
 262 {6, "Admin Reset"},
 263 {7, "Admin Reboot"},
 264 {8, "Port Error"},
 265 {9, "NAS Error"},
 266 {10, "NAS Request"},
 267 {11,"NAS Reboot"},
 268 {12, "Port Unneeded"},
 269 {13, "Port Preempted"},
 270 {14,"Port Suspended"},
 271 {15,"Service Unavailable"},
 272 {16,"Callback"},
 273 {17, "User Error"},
 274 {18,"Host Request"},
 275 {0,NULL}};
 276
 277 static value_string radius_tunnel_type_vals[]=
 278 {{1,"PPTP"},
 279 {2,"L2F"},
 280 {3,"L2TP"},
 281 {4,"ATMP"},
 282 {5,"VTP"},
 283 {6,"AH"},
 284 {7,"IP-IP-Encap"},
 285 {8,"MIN-IP-IP"},
 286 {9,"ESP"},
 287 {10,"GRE"},
 288 {11,"DVS"},
 289 {12,"IP-IP"},
 290 {0,NULL}};
 291
 292 static value_string radius_tunnel_medium_type_vals[]=
 293 {{1,"IPv4"},
 294 {2,"IPv6"},
 295 {3,"NSAP"},
 296 {4,"HDLC"},
 297 {5,"BBN"},
 298 {6,"IEEE-802"},
 299 {7,"E-163"},
 300 {8,"E-164"},
 301 {9,"F-69"},
 302 {10,"X-121"},
 303 {11,"IPX"},
 304 {12,"Appletalk"},
 305 {13,"Decnet4"},
 306 {14,"Vines"},
 307 {15,"E-164-NSAP"},
 308 {0,NULL}};
 309
 310 static value_string radius_nas_port_type_vals[]=
 311 {{0, "Async"},
 312 {1, "Sync"},
 313 {2,"ISDN Sync"},
 314 {3, "ISDN Async V.120"},
 315 {4,"ISDN Async V.110"},
 316 {5, "Virtual"},
 317 {6, "PIAFS"},
 318 {7, "HDLC Clear Channel"},
 319 {8, "X.25"},
 320 {9,"X.75"},
 321 {10, "G.3 Fax"},
 322 {11,"SDSL"},
 323 {12, "ADSL-CAP"},
 324 {13, "ADSL-DMT"},
 325 {14,"IDSL - ISDN"},
 326 {0,NULL}};
 327
 328 static value_value_pair radius_printinfo[] = {
 329 { RD_TP_USER_NAME, RADIUS_STRING },
 330 { RD_TP_USER_PASSWORD,RADIUS_BINSTRING },
 331 { RD_TP_CHAP_PASSWORD, RADIUS_BINSTRING },
 332 { RD_TP_NAS_IP_ADDRESS, RADIUS_IP_ADDRESS },
 333 { RD_TP_NAS_PORT, RADIUS_INTEGER4},
 334 { RD_TP_SERVICE_TYPE, RADIUS_SERVICE_TYPE},
 335 { RD_TP_FRAMED_PROTOCOL, RADIUS_FRAMED_PROTOCOL},
 336 { RD_TP_FRAMED_IP_ADDRESS, RADIUS_IP_ADDRESS},
 337 { RD_TP_FRAMED_IP_NETMASK, RADIUS_IP_ADDRESS},
 338 { RD_TP_FRAMED_ROUTING, RADIUS_FRAMED_ROUTING},
 339 { RD_TP_FILTER_ID, RADIUS_STRING},
 340 { RD_TP_FRAMED_MTU, RADIUS_INTEGER4},
 341 { RD_TP_FRAMED_COMPRESSION, RADIUS_FRAMED_COMPRESSION},
 342 { RD_TP_LOGIN_IP_HOST, RADIUS_IP_ADDRESS},
 343 { RD_TP_LOGIN_SERVICE, RADIUS_LOGIN_SERVICE},
 344 { RD_TP_LOGIN_TCP_PORT, RADIUS_INTEGER4},
 345 { RD_TP_UNASSIGNED, RADIUS_UNKNOWN},
 346 { RD_TP_REPLY_MESSAGE, RADIUS_STRING},
 347 { RD_TP_CALLBACK_NUMBER, RADIUS_BINSTRING},
 348 { RD_TP_CALLBACK_ID, RADIUS_BINSTRING},
 349 { RD_TP_UNASSIGNED2, RADIUS_UNKNOWN},
 350 { RD_TP_FRAMED_ROUTE, RADIUS_STRING},
 351 { RD_TP_FRAMED_IPX_NETWORK, RADIUS_IPX_ADDRESS},
 352 { RD_TP_STATE, RADIUS_BINSTRING},
 353 { RD_TP_CLASS, RADIUS_BINSTRING},
 354 { RD_TP_VENDOR_SPECIFIC, RADIUS_VENDOR_SPECIFIC},
 355 { RD_TP_SESSION_TIMEOUT, RADIUS_INTEGER4},
 356 { RD_TP_IDLE_TIMEOUT, RADIUS_INTEGER4},
 357 { RD_TP_TERMINATING_ACTION, RADIUS_TERMINATING_ACTION},
 358 { RD_TP_CALLED_STATION_ID, RADIUS_BINSTRING},
 359 { RD_TP_CALLING_STATION_ID, RADIUS_BINSTRING},
 360 { RD_TP_NAS_IDENTIFIER, RADIUS_BINSTRING},
 361 { RD_TP_PROXY_STATE, RADIUS_BINSTRING},
 362 { RD_TP_LOGIN_LAT_SERVICE, RADIUS_BINSTRING},
 363 { RD_TP_LOGIN_LAT_NODE, RADIUS_BINSTRING},
 364 { RD_TP_LOGIN_LAT_GROUP, RADIUS_BINSTRING},
 365 { RD_TP_FRAMED_APPLETALK_LINK, RADIUS_INTEGER4},
 366 { RD_TP_FRAMED_APPLETALK_NETWORK, RADIUS_INTEGER4},
 367 { RD_TP_FRAMED_APPLETALK_ZONE, RADIUS_BINSTRING},
 368 { RD_TP_ACCT_STATUS_TYPE, RADIUS_ACCOUNTING_STATUS_TYPE},
 369 { RD_TP_ACCT_DELAY_TIME, RADIUS_INTEGER4},
 370 { RD_TP_ACCT_INPUT_OCTETS, RADIUS_INTEGER4},
 371 { RD_TP_ACCT_OUTPUT_OCTETS, RADIUS_INTEGER4},
 372 { RD_TP_ACCT_SESSION_ID, RADIUS_STRING},
 373 { RD_TP_ACCT_AUTHENTIC, RADIUS_ACCT_AUTHENTIC},
 374 { RD_TP_ACCT_SESSION_TIME, RADIUS_INTEGER4},
 375 { RD_TP_ACCT_INPUT_PACKETS, RADIUS_INTEGER4},
 376 { RD_TP_ACCT_OUTPUT_PACKETS, RADIUS_INTEGER4},
 377 { RD_TP_ACCT_TERMINATE_CAUSE, RADIUS_ACCT_TERMINATE_CAUSE},
 378 { RD_TP_ACCT_MULTI_SESSION_ID, RADIUS_STRING},
 379 { RD_TP_ACCT_LINK_COUNT, RADIUS_INTEGER4},
 380 { RD_TP_CHAP_CHALLENGE, RADIUS_BINSTRING},
 381 { RD_TP_NAS_PORT_TYPE, RADIUS_NAS_PORT_TYPE},
 382 { RD_TP_PORT_LIMIT, RADIUS_INTEGER4},
 383 { RD_TP_LOGIN_LAT_PORT, RADIUS_BINSTRING},
 384 { RD_TP_TUNNEL_TYPE, RADIUS_TUNNEL_TYPE},
 385 { RD_TP_TUNNEL_MEDIUM_TYPE, RADIUS_TUNNEL_MEDIUM_TYPE},
 386 { RD_TP_TUNNEL_CLIENT_ENDPOINT, RADIUS_STRING_TAGGED},
 387 { RD_TP_TUNNEL_SERVER_ENDPOINT, RADIUS_STRING_TAGGED},
 388 { RD_TP_TUNNEL_PASSWORD, RADIUS_STRING_TAGGED},
 389 { RD_TP_TUNNEL_ASSIGNMENT_ID, RADIUS_STRING_TAGGED},
 390 {0,0},
 391 };
 392
 393 static value_string radius_attrib_type_vals[] = {
 394 { RD_TP_USER_NAME, "User Name"},
 395 { RD_TP_USER_PASSWORD, "User Password"},
 396 { RD_TP_CHAP_PASSWORD, "Chap Password"},
 397 { RD_TP_NAS_IP_ADDRESS, "NAS IP Address"},
 398 { RD_TP_NAS_PORT, "NAS Port"},
 399 { RD_TP_SERVICE_TYPE, "Service Type"},
 400 { RD_TP_FRAMED_PROTOCOL, "Framed Protocol"},
 401 { RD_TP_FRAMED_IP_ADDRESS, "Framed IP Address"},
 402 { RD_TP_FRAMED_IP_NETMASK, "Framed IP Netmask"},
 403 { RD_TP_FRAMED_ROUTING, "Framed Routing"},
 404 { RD_TP_FILTER_ID, "Filter Id"},
 405 { RD_TP_FRAMED_MTU, "Framed MTU"},
 406 { RD_TP_FRAMED_COMPRESSION, "Framed Compression"},
 407 { RD_TP_LOGIN_IP_HOST, "Login IP Host"},
 408 { RD_TP_LOGIN_SERVICE, "Login Service"},
 409 { RD_TP_LOGIN_TCP_PORT, "Login TCP Port"},
 410 { RD_TP_UNASSIGNED, "Unassigned"},
 411 { RD_TP_REPLY_MESSAGE, "Reply Message"},
 412 { RD_TP_CALLBACK_NUMBER, "Callback Number"},
 413 { RD_TP_CALLBACK_ID, "Callback Id"},
 414 { RD_TP_UNASSIGNED2, "Unassigned"},
 415 { RD_TP_FRAMED_ROUTE, "Framed Route"},
 416 { RD_TP_FRAMED_IPX_NETWORK, "Framed IPX network"},
 417 { RD_TP_STATE, "State"},
 418 { RD_TP_CLASS, "Class"},
 419 { RD_TP_VENDOR_SPECIFIC, "Vendor Specific" },
 420 { RD_TP_SESSION_TIMEOUT, "Session Timeout"},
 421 { RD_TP_IDLE_TIMEOUT, "Idle Timeout"},
 422 { RD_TP_TERMINATING_ACTION, "Terminating Action"},
 423 { RD_TP_CALLED_STATION_ID, "Called Station Id"},
 424 { RD_TP_CALLING_STATION_ID, "Calling Station Id"},
 425 { RD_TP_NAS_IDENTIFIER, "NAS identifier"},
 426 { RD_TP_PROXY_STATE, "Proxy State"},
 427 { RD_TP_LOGIN_LAT_SERVICE, "Login LAT Service"},
 428 { RD_TP_LOGIN_LAT_NODE, "Login LAT Node"},
 429 { RD_TP_LOGIN_LAT_GROUP, "Login LAT Group"},
 430 { RD_TP_FRAMED_APPLETALK_LINK, "Framed Appletalk Link"},
 431 { RD_TP_FRAMED_APPLETALK_NETWORK, "Framed Appletalk Network"},
 432 { RD_TP_FRAMED_APPLETALK_ZONE, "Framed Appletalk Zone"},
 433 { RD_TP_ACCT_STATUS_TYPE, "Acct Status Type"},
 434 { RD_TP_ACCT_DELAY_TIME, "Acct Delay Time"},
 435 { RD_TP_ACCT_INPUT_OCTETS, "Acct Input Octets"},
 436 { RD_TP_ACCT_OUTPUT_OCTETS, "Acct Output Octets"},
 437 { RD_TP_ACCT_SESSION_ID, "Acct Session Id"},
 438 { RD_TP_ACCT_AUTHENTIC, "Acct Authentic"},
 439 { RD_TP_ACCT_SESSION_TIME, "Acct Session Time"},
 440 { RD_TP_ACCT_INPUT_PACKETS, "Acct Input Packets"},
 441 { RD_TP_ACCT_OUTPUT_PACKETS, "Acct Output Packets"},
 442 { RD_TP_ACCT_TERMINATE_CAUSE, "Acct Terminate Cause"},
 443 { RD_TP_ACCT_MULTI_SESSION_ID, "Acct Multi Session Id"},
 444 { RD_TP_ACCT_LINK_COUNT, "Acct Link Count"},
 445 { RD_TP_CHAP_CHALLENGE, "Chap Challenge"},
 446 { RD_TP_NAS_PORT_TYPE, "NAS Port Type"},
 447 { RD_TP_PORT_LIMIT, "Port Limit"},
 448 { RD_TP_LOGIN_LAT_PORT, "Login LAT Port"},
 449 { RD_TP_TUNNEL_TYPE, "Tunnel Type"},
 450 { RD_TP_TUNNEL_MEDIUM_TYPE, "Tunnel Medium Type"},
 451 { RD_TP_TUNNEL_CLIENT_ENDPOINT, "Tunnel Client Endpoint"},
 452 { RD_TP_TUNNEL_SERVER_ENDPOINT, "Tunnel Server Endpoint"},
 453 { RD_TP_TUNNEL_PASSWORD, "Tunnel Password"},
 454 { RD_TP_TUNNEL_ASSIGNMENT_ID, "Tunnel Assignment ID"},
 455 {0,NULL},
 456 };
 457
 458 guint32 match_numval(guint32 val, const value_value_pair *vs)
 459 {
 460   guint32 i = 0;
 461
 462   while (vs[i].val1) {
 463     if (vs[i].val1 == val)
 464       return(vs[i].val2);
 465     i++;
 466   }
 467
 468   return(0);
 469 }
 470
 471 static gchar textbuffer[2000];
 472
 473 gchar *rdconvertbufftostr(gchar *dest,guint8 length,const guint8 *pd)
 474 {
 475 /*converts the raw buffer into printable text */
 476 guint32 i;
 477 guint32 totlen=0;
 478
 479         dest[0]='"';
 480         dest[1]=0;
 481         totlen=1;
 482         for (i=0; i < (guint32)length; i++)
 483         {
 484                 if( isalnum((int)pd[i])||ispunct((int)pd[i])
 485                                 ||((int)pd[i]==' '))            {
 486                         dest[totlen]=(gchar)pd[i];
 487                         totlen++;
 488                 }
 489                 else
 490                 {
 491                         sprintf(&(dest[totlen]), "\\%03u", pd[i]);
 492                         totlen=totlen+strlen(&(dest[totlen]));
 493                 }
 494         }
 495         dest[totlen]='"';
 496         dest[totlen+1]=0;
 497         return dest;
 498 }
 499
 500 gchar *rd_match_strval(guint32 val, const value_string *vs) {
 501         gchar           *result;
 502         static gchar    undf[30];
 503         result=match_strval(val,vs);
 504         if (result == NULL ) {
 505                 sprintf(undf,"Undefined(%d)",val);
 506                 result=undf;
 507         }
 508         return result;
 509 }
 510
 511 gchar *rd_value_to_str(e_avphdr *avph,const u_char *pd, int offset)
 512 {
 513 int print_type;
 514 gchar *cont;
 515 guint32 intval;
 516 value_string *valstrarr;
 517 /* prints the values of the attribute value pairs into a text buffer */
 518   print_type=match_numval(avph->avp_type,radius_printinfo);
 519   intval=pntohl(&(pd[offset+2]));
 520   /* Default begin */
 521   strcpy(textbuffer,"Value:");
 522   cont=&textbuffer[strlen(textbuffer)];
 523   switch(print_type)
 524   {
 525         case( RADIUS_STRING ):
 526         case( RADIUS_BINSTRING ):
 527                 rdconvertbufftostr(cont,avph->avp_length-2,&(pd[offset+2]));
 528                 break;
 529         case( RADIUS_INTEGER4 ):
 530                 sprintf(cont,"%u", intval);
 531                 break;
 532         case( RADIUS_IP_ADDRESS ):
 533                 sprintf(cont,"%u.%u.%u.%u",(guint8)pd[offset+2],
 534                         (guint8)pd[offset+3],(guint8)pd[offset+4],
 535                         (guint8)pd[offset+5]);
 536                 break;
 537         case( RADIUS_SERVICE_TYPE ):
 538                 valstrarr=radius_service_type_vals;
 539                 strcpy(cont,rd_match_strval(intval,valstrarr));
 540                 break;
 541         case( RADIUS_FRAMED_PROTOCOL ):
 542                 valstrarr= radius_framed_protocol_vals;
 543                 strcpy(cont,rd_match_strval(intval,valstrarr));
 544                 break;
 545         case( RADIUS_FRAMED_ROUTING ):
 546                 valstrarr=radius_framed_routing_vals;
 547                 strcpy(cont,rd_match_strval(intval,valstrarr));
 548                 break;
 549         case( RADIUS_FRAMED_COMPRESSION ):
 550                 valstrarr=radius_framed_compression_vals;
 551                 strcpy(cont,rd_match_strval(intval,valstrarr));
 552                 break;
 553         case( RADIUS_LOGIN_SERVICE ):
 554                 valstrarr=radius_login_service_vals;
 555                 strcpy(cont,rd_match_strval(intval,valstrarr));
 556                 break;
 557         case( RADIUS_IPX_ADDRESS ):
 558                 sprintf(cont,"%u:%u:%u:%u",(guint8)pd[offset+2],
 559                         (guint8)pd[offset+3],(guint8)pd[offset+4],
 560                         (guint8)pd[offset+5]);
 561         case( RADIUS_TERMINATING_ACTION ):
 562                 valstrarr=radius_terminating_action_vals;
 563                 strcpy(cont,rd_match_strval(intval,valstrarr));
 564                 break;
 565         case( RADIUS_ACCOUNTING_STATUS_TYPE ):
 566                 valstrarr=radius_accounting_status_type_vals;
 567                 strcpy(cont,rd_match_strval(intval,valstrarr));
 568                 break;
 569         case( RADIUS_ACCT_AUTHENTIC ):
 570                 valstrarr=radius_accounting_authentication_vals;
 571                 strcpy(cont,rd_match_strval(intval,valstrarr));
 572                 break;
 573         case( RADIUS_ACCT_TERMINATE_CAUSE ):
 574                 valstrarr=radius_acct_terminate_cause_vals;
 575                 strcpy(cont,rd_match_strval(intval,valstrarr));
 576                 break;
 577         case( RADIUS_NAS_PORT_TYPE ):
 578                 valstrarr=radius_nas_port_type_vals;
 579                 strcpy(cont,rd_match_strval(intval,valstrarr));
 580                 break;
 581         case( RADIUS_TUNNEL_TYPE ):
 582                 valstrarr=radius_tunnel_type_vals;
 583                 /* Tagged ? */
 584                 if (intval >> 24) {
 585                         sprintf(textbuffer, "Tag:%d, Value:%s",
 586                                 intval >> 24,
 587                                 rd_match_strval(intval & 0xffffff,valstrarr));
 588                         break;
 589                 }
 590                 strcpy(cont,match_strval(intval,valstrarr));
 591                 break;
 592         case( RADIUS_TUNNEL_MEDIUM_TYPE ):
 593                 valstrarr=radius_tunnel_medium_type_vals;
 594                 /* Tagged ? */
 595                 if (intval >> 24) {
 596                         sprintf(textbuffer, "Tag:%d, Value:%s",
 597                                 intval >> 24,
 598                                 rd_match_strval(intval & 0xffffff,valstrarr));
 599                         break;
 600                 }
 601                 strcpy(cont,match_strval(intval,valstrarr));
 602                 break;
 603         case( RADIUS_STRING_TAGGED ):
 604                 /* Tagged ? */
 605                 if (pd[offset+2] <= 0x1f) {
 606                         sprintf(textbuffer, "Tag:%d, Value:",
 607                                         pd[offset+2]);
 608                         cont=&textbuffer[strlen(textbuffer)];
 609                         rdconvertbufftostr(cont,avph->avp_length-3,
 610                                         &(pd[offset+3]));
 611                         break;
 612                 }
 613                 rdconvertbufftostr(cont,avph->avp_length-2,
 614                                 &(pd[offset+2]));
 615                 break;
 616         case ( RADIUS_VENDOR_SPECIFIC ):
 617                 valstrarr=radius_vendor_specific_vendors;
 618                 sprintf(textbuffer,"Vendor:%s, Value:",
 619                                 rd_match_strval(intval,valstrarr));
 620                 cont=&textbuffer[strlen(textbuffer)];
 621                 rdconvertbufftostr(cont,avph->avp_length-6,&(pd[offset+6]));
 622                 break;
 623         case( RADIUS_UNKNOWN ):
 624         default:
 625                 strcpy(textbuffer,"Unknown Value Type");
 626                 break;
 627   }
 628   if (cont == textbuffer) {
 629         strcpy(cont,"Unknown Value");
 630   }
 631   return textbuffer;
 632 }
 633
 634
 635 void dissect_attribute_value_pairs(const u_char *pd, int offset, frame_data
 636 *fd, proto_tree *tree, int avplength)
 637 {
 638 /* adds the attribute value pairs to the tree */
 639   e_avphdr avph;
 640   gchar *avptpstrval;
 641   gchar *valstr;
 642   if (avplength==0)
 643   {
 644         proto_tree_add_text(tree, NullTVB,offset,0,"No Attribute Value Pairs Found");
 645         return;
 646   }
 647
 648   while (avplength > 0 )
 649   {
 650
 651      memcpy(&avph,&pd[offset],sizeof(e_avphdr));
 652      avplength=avplength-avph.avp_length;
 653      avptpstrval=match_strval(avph.avp_type, radius_attrib_type_vals);
 654      if (avptpstrval == NULL) avptpstrval="Unknown Type";
 655      valstr=rd_value_to_str(&avph, pd, offset);
 656      if (!BYTES_ARE_IN_FRAME(offset, avph.avp_length)) {
 657         break;
 658      }
 659      proto_tree_add_text(tree, NullTVB,offset,avph.avp_length,
 660         "t:%s(%d) l:%d, %s",
 661         avptpstrval,avph.avp_type,avph.avp_length,valstr);
 662      offset=offset+avph.avp_length;
 663      if (avph.avp_length == 0) {
 664         break;
 665      }
 666   }
 667 }
 668
 669 static void dissect_radius(const u_char *pd, int offset, frame_data *fd,
 670 proto_tree
 671 *tree)
 672 {
 673   proto_tree *radius_tree,*avptree;
 674   proto_item *ti,*avptf;
 675   int rhlength;
 676   int rhcode;
 677   int rhident;
 678   int avplength,hdrlength, offsetavp;
 679   e_radiushdr rh;
 680
 681   gchar *codestrval;
 682
 683   memcpy(&rh,&pd[offset],sizeof(e_radiushdr));
 684
 685
 686   rhcode= (int)rh.rh_code;
 687   rhident= (int)rh.rh_ident;
 688   rhlength= (int)ntohs(rh.rh_pktlength);
 689   codestrval=  match_strval(rhcode,radius_vals);
 690   if (codestrval==NULL)
 691   {
 692         codestrval="Unknown Packet";
 693   }
 694   if (check_col(fd, COL_PROTOCOL))
 695         col_add_str(fd, COL_PROTOCOL, "RADIUS");
 696   if (check_col(fd, COL_INFO))
 697   {
 698         sprintf(textbuffer,"%s(%d) (id=%d, l=%d)",
 699                 codestrval, rhcode, rhident, rhlength);
 700         col_add_fstr(fd,COL_INFO,textbuffer);
 701   }
 702
 703   if (tree)
 704   {
 705
 706         ti = proto_tree_add_item(tree,proto_radius, NullTVB, offset, rhlength,
 707                         FALSE);
 708
 709         radius_tree = proto_item_add_subtree(ti, ett_radius);
 710
 711         proto_tree_add_uint_format(radius_tree,hf_radius_code, NullTVB, offset,      1,
 712                 rh.rh_code, "Packet code:0x%01x (%s)",rhcode, codestrval);
 713         proto_tree_add_uint_format(radius_tree,hf_radius_id, NullTVB, offset+1, 1,
 714                 rh.rh_ident, "Packet identifier: 0x%01x (%d)",
 715                         rhident,rhident);
 716
 717         proto_tree_add_uint_format(radius_tree, hf_radius_length, NullTVB,
 718                         offset+2, 2,
 719                  (guint16)rhlength,
 720                 "Packet length: 0x%02x(%d)",rhlength,rhlength);
 721          proto_tree_add_text(radius_tree, NullTVB, offset+4,
 722                         AUTHENTICATOR_LENGTH,
 723                          "Authenticator");
 724
 725         hdrlength=RD_HDR_LENGTH+AUTHENTICATOR_LENGTH;
 726         avplength= rhlength -hdrlength;
 727
 728         offsetavp=offset+hdrlength;
 729
 730
 731         /* list the attribute value pairs */
 732
 733         avptf = proto_tree_add_text(radius_tree,
 734                         NullTVB,offset+hdrlength,avplength,
 735                         "Attribute value pairs");
 736         avptree = proto_item_add_subtree(avptf, ett_radius_avp);
 737
 738         if (avptree !=NULL)
 739         {
 740                 dissect_attribute_value_pairs( pd,
 741                                 offsetavp,fd,avptree,avplength);
 742         }
 743   }
 744 }
 745 /* registration with the filtering engine */
 746 void
 747 proto_register_radius(void)
 748 {
 749         static hf_register_info hf[] = {
 750                 { &hf_radius_code,
 751                 { "Code","radius.code", FT_UINT8, BASE_DEC, NULL, 0x0,
 752                         "" }},
 753
 754                 { &hf_radius_id,
 755                 { "Identifier", "radius.id", FT_UINT8, BASE_DEC, NULL, 0x0,
 756                         "" }},
 757
 758                 { &hf_radius_length,
 759                 { "Length","radius.length", FT_UINT16, BASE_DEC, NULL, 0x0,
 760                         "" }}
 761         };
 762         static gint *ett[] = {
 763                 &ett_radius,
 764                 &ett_radius_avp,
 765         };
 766
 767         proto_radius = proto_register_protocol ("Radius Protocol", "radius");
 768         proto_register_field_array(proto_radius, hf, array_length(hf));
 769         proto_register_subtree_array(ett, array_length(ett));
 770 }
 771
 772 void
 773 proto_reg_handoff_radius(void)
 774 {
 775         dissector_add("udp.port", UDP_PORT_RADIUS, dissect_radius);
 776         dissector_add("udp.port", UDP_PORT_RADIUS_NEW, dissect_radius);
 777         dissector_add("udp.port", UDP_PORT_RADACCT, dissect_radius);
 778         dissector_add("udp.port", UDP_PORT_RADACCT_NEW, dissect_radius);
 779 }