packet-radius.c

   1 /* packet-radius.c
   2  * Routines for RADIUS packet disassembly
   3  * Copyright 1999 Johan Feyaerts
   4  *
   5  * $Id: packet-radius.c,v 1.31 2001/06/18 02:17:51 guy Exp $
   6  *
   7  * Ethereal - Network traffic analyzer
   8  * By Gerald Combs <gerald@ethereal.com>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 #include "config.h"
  28 #endif
  29
  30 #ifdef HAVE_SYS_TYPES_H
  31 # include <sys/types.h>
  32 #endif
  33
  34 #ifdef HAVE_NETINET_IN_H
  35 #include <netinet/in.h>
  36 #endif
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <ctype.h>
  42 #include <glib.h>
  43 #include "packet.h"
  44 #include "resolv.h"
  45
  46 static int proto_radius = -1;
  47 static int hf_radius_length = -1;
  48 static int hf_radius_code = -1;
  49 static int hf_radius_id =-1;
  50
  51 static gint ett_radius = -1;
  52 static gint ett_radius_avp = -1;
  53
  54 #define UDP_PORT_RADIUS         1645
  55 #define UDP_PORT_RADIUS_NEW     1812
  56 #define UDP_PORT_RADACCT        1646
  57 #define UDP_PORT_RADACCT_NEW    1813
  58
  59 typedef struct _e_radiushdr {
  60         guint8 rh_code;
  61         guint8 rh_ident;
  62         guint16 rh_pktlength;
  63 } e_radiushdr;
  64
  65 typedef struct _e_avphdr {
  66         guint8 avp_type;
  67         guint8 avp_length;
  68 } e_avphdr;
  69
  70 typedef struct _value_value_pair {
  71         guint16 val1;
  72         guint16 val2;
  73 } value_value_pair;
  74
  75 #define RADIUS_ACCESS_REQUEST 1
  76 #define RADIUS_ACCESS_ACCEPT  2
  77 #define RADIUS_ACCESS_REJECT  3
  78 #define RADIUS_ACCOUNTING_REQUEST 4
  79 #define RADIUS_ACCOUNTING_RESPONSE 5
  80 #define RADIUS_ACCESS_CHALLENGE 11
  81 #define RADIUS_STATUS_SERVER 12
  82 #define RADIUS_STATUS_CLIENT 13
  83 #define RADIUS_RESERVED 255
  84
  85 #define RD_TP_USER_NAME 1
  86 #define RD_TP_USER_PASSWORD 2
  87 #define RD_TP_CHAP_PASSWORD 3
  88 #define RD_TP_NAS_IP_ADDRESS 4
  89 #define RD_TP_NAS_PORT 5
  90 #define RD_TP_SERVICE_TYPE 6
  91 #define RD_TP_FRAMED_PROTOCOL 7
  92 #define RD_TP_FRAMED_IP_ADDRESS 8
  93 #define RD_TP_FRAMED_IP_NETMASK 9
  94 #define RD_TP_FRAMED_ROUTING 10
  95 #define RD_TP_FILTER_ID 11
  96 #define RD_TP_FRAMED_MTU 12
  97 #define RD_TP_FRAMED_COMPRESSION 13
  98 #define RD_TP_LOGIN_IP_HOST 14
  99 #define RD_TP_LOGIN_SERVICE 15
 100 #define RD_TP_LOGIN_TCP_PORT 16
 101 #define RD_TP_UNASSIGNED 17
 102 #define RD_TP_REPLY_MESSAGE 18
 103 #define RD_TP_CALLBACK_NUMBER 19
 104 #define RD_TP_CALLBACK_ID 20
 105 #define RD_TP_UNASSIGNED2 21
 106 #define RD_TP_FRAMED_ROUTE 22
 107 #define RD_TP_FRAMED_IPX_NETWORK 23
 108 #define RD_TP_STATE 24
 109 #define RD_TP_CLASS 25
 110 #define RD_TP_VENDOR_SPECIFIC 26
 111 #define RD_TP_SESSION_TIMEOUT 27
 112 #define RD_TP_IDLE_TIMEOUT 28
 113 #define RD_TP_TERMINATING_ACTION 29
 114 #define RD_TP_CALLED_STATION_ID 30
 115 #define RD_TP_CALLING_STATION_ID 31
 116 #define RD_TP_NAS_IDENTIFIER 32
 117 #define RD_TP_PROXY_STATE 33
 118 #define RD_TP_LOGIN_LAT_SERVICE 34
 119 #define RD_TP_LOGIN_LAT_NODE 35
 120 #define RD_TP_LOGIN_LAT_GROUP 36
 121 #define RD_TP_FRAMED_APPLETALK_LINK 37
 122 #define RD_TP_FRAMED_APPLETALK_NETWORK 38
 123 #define RD_TP_FRAMED_APPLETALK_ZONE 39
 124 #define RD_TP_ACCT_STATUS_TYPE 40
 125 #define RD_TP_ACCT_DELAY_TIME 41
 126 #define RD_TP_ACCT_INPUT_OCTETS 42
 127 #define RD_TP_ACCT_OUTPUT_OCTETS 43
 128 #define RD_TP_ACCT_SESSION_ID 44
 129 #define RD_TP_ACCT_AUTHENTIC 45
 130 #define RD_TP_ACCT_SESSION_TIME 46
 131 #define RD_TP_ACCT_INPUT_PACKETS 47
 132 #define RD_TP_ACCT_OUTPUT_PACKETS 48
 133 #define RD_TP_ACCT_TERMINATE_CAUSE 49
 134 #define RD_TP_ACCT_MULTI_SESSION_ID 50
 135 #define RD_TP_ACCT_LINK_COUNT 51
 136 #define RD_TP_CHAP_CHALLENGE 60
 137 #define RD_TP_NAS_PORT_TYPE 61
 138 #define RD_TP_PORT_LIMIT 62
 139 #define RD_TP_LOGIN_LAT_PORT 63
 140 #define RD_TP_TUNNEL_TYPE 64
 141 #define RD_TP_TUNNEL_MEDIUM_TYPE 65
 142 #define RD_TP_TUNNEL_CLIENT_ENDPOINT 66
 143 #define RD_TP_TUNNEL_SERVER_ENDPOINT 67
 144 #define RD_TP_TUNNEL_PASSWORD 69
 145 #define RD_TP_TUNNEL_ASSIGNMENT_ID 82
 146
 147 #define AUTHENTICATOR_LENGTH 16
 148 #define RD_HDR_LENGTH 4
 149
 150
 151 #define RADIUS_STRING 1
 152 #define RADIUS_BINSTRING 2
 153 #define RADIUS_INTEGER4 3
 154 #define RADIUS_IP_ADDRESS 4
 155 #define RADIUS_SERVICE_TYPE 5
 156 #define RADIUS_FRAMED_PROTOCOL 6
 157 #define RADIUS_FRAMED_ROUTING 7
 158 #define RADIUS_FRAMED_COMPRESSION 8
 159 #define RADIUS_LOGIN_SERVICE 9
 160 #define RADIUS_UNKNOWN 10
 161 #define RADIUS_IPX_ADDRESS 11
 162 #define RADIUS_TERMINATING_ACTION 12
 163 #define RADIUS_ACCOUNTING_STATUS_TYPE 13
 164 #define RADIUS_ACCT_AUTHENTIC 14
 165 #define RADIUS_ACCT_TERMINATE_CAUSE 15
 166 #define RADIUS_NAS_PORT_TYPE 16
 167 #define RADIUS_TUNNEL_TYPE 17
 168 #define RADIUS_TUNNEL_MEDIUM_TYPE 18
 169 #define RADIUS_STRING_TAGGED 19
 170 #define RADIUS_VENDOR_SPECIFIC 20
 171
 172 static value_string radius_vals[] = {
 173  {RADIUS_ACCESS_REQUEST, "Access Request"},
 174  {RADIUS_ACCESS_ACCEPT, "Access Accept"},
 175  {RADIUS_ACCESS_REJECT, "Access Reject"},
 176  {RADIUS_ACCOUNTING_REQUEST, "Accounting Request"},
 177  {RADIUS_ACCOUNTING_RESPONSE, "Accounting Response"},
 178  {RADIUS_ACCESS_CHALLENGE, "Accounting challenge"},
 179  {RADIUS_STATUS_SERVER, "StatusServer"},
 180  {RADIUS_STATUS_CLIENT, "StatusClient"},
 181  {RADIUS_RESERVED, "Reserved"},
 182 {0, NULL}};
 183
 184 static value_string radius_service_type_vals[]=
 185 {{1, "Login"},
 186 {2, "Framed"},
 187 {3, "Callback Login"},
 188 {4, "Callback Framed"},
 189 {5, "Outbound"},
 190 {6, "Administrative"},
 191 {7, "NAS Prompt"},
 192 {8, "Authenticate Only"},
 193 {9, "Callback NAS Prompt"},
 194 {10, "Call Check"},
 195 {0,NULL}};
 196
 197 /*
 198  * These are SMI Network Management Private Enterprise Codes for
 199  * organizations; see
 200  *
 201  *      http://www.isi.edu/in-notes/iana/assignments/enterprise-numbers
 202  *
 203  * for a list.
 204  */
 205 static value_string radius_vendor_specific_vendors[]=
 206 {{5, "ACC"},
 207 {9,"Cisco"},
 208 {166,"Shiva"},
 209 {307,"Livingston"},
 210 {429,"3Com"},
 211 {529,"Ascend"},
 212 {1584,"Bay Networks"},
 213 {2636,"Juniper Networks"},
 214 {0,NULL}};
 215
 216 static value_string radius_framed_protocol_vals[]=
 217 {{1, "PPP"},
 218 {2, "SLIP"},
 219 {3, "Appletalk Remote Access Protocol (ARAP)"},
 220 {4, "Gandalf proprietary Singlelink/Multilink Protocol"},
 221 {5, "Xylogics proprietary IPX/SLIP"},
 222 {6, "X.75 Synchronous"},
 223 {0,NULL}};
 224
 225 static value_string radius_framed_routing_vals[]=
 226 {{1, "Send Routing Packets"},
 227 {2, "Listen for routing packets"},
 228 {3, "Send and Listen"},
 229 {0,"None"},
 230 {0,NULL}};
 231
 232 static value_string radius_framed_compression_vals[]=
 233 {{1, "VJ TCP/IP Header Compression"},
 234 {2, "IPX Header Compression"},
 235 {3, "Stac-LZS compression"},
 236 {0, "None"},
 237 {0,NULL}};
 238
 239 static value_string radius_login_service_vals[]=
 240 {{1, "Rlogin"},
 241 {2, "TCP Clear"},
 242 {3, "Portmaster"},
 243 {4, "LAT"},
 244 {5, "X.25-PAD"},
 245 {6, "X.25T3POS"},
 246 {8, "TCP Clear Quit"},
 247 {0, "Telnet"},
 248 {0,NULL}};
 249
 250 static value_string radius_terminating_action_vals[]=
 251 {{1, "RADIUS-Request"},
 252 {0, "Default"},
 253 {0,NULL}};
 254
 255 static value_string radius_accounting_status_type_vals[]=
 256 {{1, "Start"},
 257 {2, "Stop"},
 258 {3, "Interim-Update"},
 259 {7,"Accounting-On"},
 260 {8,"Accounting-Off"},
 261 {0,NULL}};
 262
 263 static value_string radius_accounting_authentication_vals[]=
 264 {{1, "Radius"},
 265 {2, "Local"},
 266 {7,"Remote"},
 267 {0,NULL}};
 268
 269 static value_string radius_acct_terminate_cause_vals[]=
 270 {{1, "User Request"},
 271 {2, "Lost Carrier"},
 272 {3,"Lost Service"},
 273 {4, "Idle Timeout"},
 274 {5,"Session Timeout"},
 275 {6, "Admin Reset"},
 276 {7, "Admin Reboot"},
 277 {8, "Port Error"},
 278 {9, "NAS Error"},
 279 {10, "NAS Request"},
 280 {11,"NAS Reboot"},
 281 {12, "Port Unneeded"},
 282 {13, "Port Preempted"},
 283 {14,"Port Suspended"},
 284 {15,"Service Unavailable"},
 285 {16,"Callback"},
 286 {17, "User Error"},
 287 {18,"Host Request"},
 288 {0,NULL}};
 289
 290 static value_string radius_tunnel_type_vals[]=
 291 {{1,"PPTP"},
 292 {2,"L2F"},
 293 {3,"L2TP"},
 294 {4,"ATMP"},
 295 {5,"VTP"},
 296 {6,"AH"},
 297 {7,"IP-IP-Encap"},
 298 {8,"MIN-IP-IP"},
 299 {9,"ESP"},
 300 {10,"GRE"},
 301 {11,"DVS"},
 302 {12,"IP-IP"},
 303 {0,NULL}};
 304
 305 static value_string radius_tunnel_medium_type_vals[]=
 306 {{1,"IPv4"},
 307 {2,"IPv6"},
 308 {3,"NSAP"},
 309 {4,"HDLC"},
 310 {5,"BBN"},
 311 {6,"IEEE-802"},
 312 {7,"E-163"},
 313 {8,"E-164"},
 314 {9,"F-69"},
 315 {10,"X-121"},
 316 {11,"IPX"},
 317 {12,"Appletalk"},
 318 {13,"Decnet4"},
 319 {14,"Vines"},
 320 {15,"E-164-NSAP"},
 321 {0,NULL}};
 322
 323 static value_string radius_nas_port_type_vals[]=
 324 {{0, "Async"},
 325 {1, "Sync"},
 326 {2,"ISDN Sync"},
 327 {3, "ISDN Async V.120"},
 328 {4,"ISDN Async V.110"},
 329 {5, "Virtual"},
 330 {6, "PIAFS"},
 331 {7, "HDLC Clear Channel"},
 332 {8, "X.25"},
 333 {9,"X.75"},
 334 {10, "G.3 Fax"},
 335 {11,"SDSL"},
 336 {12, "ADSL-CAP"},
 337 {13, "ADSL-DMT"},
 338 {14,"IDSL - ISDN"},
 339 {0,NULL}};
 340
 341 static value_value_pair radius_printinfo[] = {
 342 { RD_TP_USER_NAME, RADIUS_STRING },
 343 { RD_TP_USER_PASSWORD,RADIUS_BINSTRING },
 344 { RD_TP_CHAP_PASSWORD, RADIUS_BINSTRING },
 345 { RD_TP_NAS_IP_ADDRESS, RADIUS_IP_ADDRESS },
 346 { RD_TP_NAS_PORT, RADIUS_INTEGER4},
 347 { RD_TP_SERVICE_TYPE, RADIUS_SERVICE_TYPE},
 348 { RD_TP_FRAMED_PROTOCOL, RADIUS_FRAMED_PROTOCOL},
 349 { RD_TP_FRAMED_IP_ADDRESS, RADIUS_IP_ADDRESS},
 350 { RD_TP_FRAMED_IP_NETMASK, RADIUS_IP_ADDRESS},
 351 { RD_TP_FRAMED_ROUTING, RADIUS_FRAMED_ROUTING},
 352 { RD_TP_FILTER_ID, RADIUS_STRING},
 353 { RD_TP_FRAMED_MTU, RADIUS_INTEGER4},
 354 { RD_TP_FRAMED_COMPRESSION, RADIUS_FRAMED_COMPRESSION},
 355 { RD_TP_LOGIN_IP_HOST, RADIUS_IP_ADDRESS},
 356 { RD_TP_LOGIN_SERVICE, RADIUS_LOGIN_SERVICE},
 357 { RD_TP_LOGIN_TCP_PORT, RADIUS_INTEGER4},
 358 { RD_TP_UNASSIGNED, RADIUS_UNKNOWN},
 359 { RD_TP_REPLY_MESSAGE, RADIUS_STRING},
 360 { RD_TP_CALLBACK_NUMBER, RADIUS_BINSTRING},
 361 { RD_TP_CALLBACK_ID, RADIUS_BINSTRING},
 362 { RD_TP_UNASSIGNED2, RADIUS_UNKNOWN},
 363 { RD_TP_FRAMED_ROUTE, RADIUS_STRING},
 364 { RD_TP_FRAMED_IPX_NETWORK, RADIUS_IPX_ADDRESS},
 365 { RD_TP_STATE, RADIUS_BINSTRING},
 366 { RD_TP_CLASS, RADIUS_BINSTRING},
 367 { RD_TP_VENDOR_SPECIFIC, RADIUS_VENDOR_SPECIFIC},
 368 { RD_TP_SESSION_TIMEOUT, RADIUS_INTEGER4},
 369 { RD_TP_IDLE_TIMEOUT, RADIUS_INTEGER4},
 370 { RD_TP_TERMINATING_ACTION, RADIUS_TERMINATING_ACTION},
 371 { RD_TP_CALLED_STATION_ID, RADIUS_BINSTRING},
 372 { RD_TP_CALLING_STATION_ID, RADIUS_BINSTRING},
 373 { RD_TP_NAS_IDENTIFIER, RADIUS_BINSTRING},
 374 { RD_TP_PROXY_STATE, RADIUS_BINSTRING},
 375 { RD_TP_LOGIN_LAT_SERVICE, RADIUS_BINSTRING},
 376 { RD_TP_LOGIN_LAT_NODE, RADIUS_BINSTRING},
 377 { RD_TP_LOGIN_LAT_GROUP, RADIUS_BINSTRING},
 378 { RD_TP_FRAMED_APPLETALK_LINK, RADIUS_INTEGER4},
 379 { RD_TP_FRAMED_APPLETALK_NETWORK, RADIUS_INTEGER4},
 380 { RD_TP_FRAMED_APPLETALK_ZONE, RADIUS_BINSTRING},
 381 { RD_TP_ACCT_STATUS_TYPE, RADIUS_ACCOUNTING_STATUS_TYPE},
 382 { RD_TP_ACCT_DELAY_TIME, RADIUS_INTEGER4},
 383 { RD_TP_ACCT_INPUT_OCTETS, RADIUS_INTEGER4},
 384 { RD_TP_ACCT_OUTPUT_OCTETS, RADIUS_INTEGER4},
 385 { RD_TP_ACCT_SESSION_ID, RADIUS_STRING},
 386 { RD_TP_ACCT_AUTHENTIC, RADIUS_ACCT_AUTHENTIC},
 387 { RD_TP_ACCT_SESSION_TIME, RADIUS_INTEGER4},
 388 { RD_TP_ACCT_INPUT_PACKETS, RADIUS_INTEGER4},
 389 { RD_TP_ACCT_OUTPUT_PACKETS, RADIUS_INTEGER4},
 390 { RD_TP_ACCT_TERMINATE_CAUSE, RADIUS_ACCT_TERMINATE_CAUSE},
 391 { RD_TP_ACCT_MULTI_SESSION_ID, RADIUS_STRING},
 392 { RD_TP_ACCT_LINK_COUNT, RADIUS_INTEGER4},
 393 { RD_TP_CHAP_CHALLENGE, RADIUS_BINSTRING},
 394 { RD_TP_NAS_PORT_TYPE, RADIUS_NAS_PORT_TYPE},
 395 { RD_TP_PORT_LIMIT, RADIUS_INTEGER4},
 396 { RD_TP_LOGIN_LAT_PORT, RADIUS_BINSTRING},
 397 { RD_TP_TUNNEL_TYPE, RADIUS_TUNNEL_TYPE},
 398 { RD_TP_TUNNEL_MEDIUM_TYPE, RADIUS_TUNNEL_MEDIUM_TYPE},
 399 { RD_TP_TUNNEL_CLIENT_ENDPOINT, RADIUS_STRING_TAGGED},
 400 { RD_TP_TUNNEL_SERVER_ENDPOINT, RADIUS_STRING_TAGGED},
 401 { RD_TP_TUNNEL_PASSWORD, RADIUS_STRING_TAGGED},
 402 { RD_TP_TUNNEL_ASSIGNMENT_ID, RADIUS_STRING_TAGGED},
 403 {0,0},
 404 };
 405
 406 static value_string radius_attrib_type_vals[] = {
 407 { RD_TP_USER_NAME, "User Name"},
 408 { RD_TP_USER_PASSWORD, "User Password"},
 409 { RD_TP_CHAP_PASSWORD, "Chap Password"},
 410 { RD_TP_NAS_IP_ADDRESS, "NAS IP Address"},
 411 { RD_TP_NAS_PORT, "NAS Port"},
 412 { RD_TP_SERVICE_TYPE, "Service Type"},
 413 { RD_TP_FRAMED_PROTOCOL, "Framed Protocol"},
 414 { RD_TP_FRAMED_IP_ADDRESS, "Framed IP Address"},
 415 { RD_TP_FRAMED_IP_NETMASK, "Framed IP Netmask"},
 416 { RD_TP_FRAMED_ROUTING, "Framed Routing"},
 417 { RD_TP_FILTER_ID, "Filter Id"},
 418 { RD_TP_FRAMED_MTU, "Framed MTU"},
 419 { RD_TP_FRAMED_COMPRESSION, "Framed Compression"},
 420 { RD_TP_LOGIN_IP_HOST, "Login IP Host"},
 421 { RD_TP_LOGIN_SERVICE, "Login Service"},
 422 { RD_TP_LOGIN_TCP_PORT, "Login TCP Port"},
 423 { RD_TP_UNASSIGNED, "Unassigned"},
 424 { RD_TP_REPLY_MESSAGE, "Reply Message"},
 425 { RD_TP_CALLBACK_NUMBER, "Callback Number"},
 426 { RD_TP_CALLBACK_ID, "Callback Id"},
 427 { RD_TP_UNASSIGNED2, "Unassigned"},
 428 { RD_TP_FRAMED_ROUTE, "Framed Route"},
 429 { RD_TP_FRAMED_IPX_NETWORK, "Framed IPX network"},
 430 { RD_TP_STATE, "State"},
 431 { RD_TP_CLASS, "Class"},
 432 { RD_TP_VENDOR_SPECIFIC, "Vendor Specific" },
 433 { RD_TP_SESSION_TIMEOUT, "Session Timeout"},
 434 { RD_TP_IDLE_TIMEOUT, "Idle Timeout"},
 435 { RD_TP_TERMINATING_ACTION, "Terminating Action"},
 436 { RD_TP_CALLED_STATION_ID, "Called Station Id"},
 437 { RD_TP_CALLING_STATION_ID, "Calling Station Id"},
 438 { RD_TP_NAS_IDENTIFIER, "NAS identifier"},
 439 { RD_TP_PROXY_STATE, "Proxy State"},
 440 { RD_TP_LOGIN_LAT_SERVICE, "Login LAT Service"},
 441 { RD_TP_LOGIN_LAT_NODE, "Login LAT Node"},
 442 { RD_TP_LOGIN_LAT_GROUP, "Login LAT Group"},
 443 { RD_TP_FRAMED_APPLETALK_LINK, "Framed Appletalk Link"},
 444 { RD_TP_FRAMED_APPLETALK_NETWORK, "Framed Appletalk Network"},
 445 { RD_TP_FRAMED_APPLETALK_ZONE, "Framed Appletalk Zone"},
 446 { RD_TP_ACCT_STATUS_TYPE, "Acct Status Type"},
 447 { RD_TP_ACCT_DELAY_TIME, "Acct Delay Time"},
 448 { RD_TP_ACCT_INPUT_OCTETS, "Acct Input Octets"},
 449 { RD_TP_ACCT_OUTPUT_OCTETS, "Acct Output Octets"},
 450 { RD_TP_ACCT_SESSION_ID, "Acct Session Id"},
 451 { RD_TP_ACCT_AUTHENTIC, "Acct Authentic"},
 452 { RD_TP_ACCT_SESSION_TIME, "Acct Session Time"},
 453 { RD_TP_ACCT_INPUT_PACKETS, "Acct Input Packets"},
 454 { RD_TP_ACCT_OUTPUT_PACKETS, "Acct Output Packets"},
 455 { RD_TP_ACCT_TERMINATE_CAUSE, "Acct Terminate Cause"},
 456 { RD_TP_ACCT_MULTI_SESSION_ID, "Acct Multi Session Id"},
 457 { RD_TP_ACCT_LINK_COUNT, "Acct Link Count"},
 458 { RD_TP_CHAP_CHALLENGE, "Chap Challenge"},
 459 { RD_TP_NAS_PORT_TYPE, "NAS Port Type"},
 460 { RD_TP_PORT_LIMIT, "Port Limit"},
 461 { RD_TP_LOGIN_LAT_PORT, "Login LAT Port"},
 462 { RD_TP_TUNNEL_TYPE, "Tunnel Type"},
 463 { RD_TP_TUNNEL_MEDIUM_TYPE, "Tunnel Medium Type"},
 464 { RD_TP_TUNNEL_CLIENT_ENDPOINT, "Tunnel Client Endpoint"},
 465 { RD_TP_TUNNEL_SERVER_ENDPOINT, "Tunnel Server Endpoint"},
 466 { RD_TP_TUNNEL_PASSWORD, "Tunnel Password"},
 467 { RD_TP_TUNNEL_ASSIGNMENT_ID, "Tunnel Assignment ID"},
 468 {0,NULL},
 469 };
 470
 471 guint32 match_numval(guint32 val, const value_value_pair *vs)
 472 {
 473   guint32 i = 0;
 474
 475   while (vs[i].val1) {
 476     if (vs[i].val1 == val)
 477       return(vs[i].val2);
 478     i++;
 479   }
 480
 481   return(0);
 482 }
 483
 484 static gchar textbuffer[2000];
 485
 486 gchar *rdconvertbufftostr(gchar *dest, tvbuff_t *tvb, int offset, int length)
 487 {
 488 /*converts the raw buffer into printable text */
 489         guint32 i;
 490         guint32 totlen=0;
 491         const guint8 *pd = tvb_get_ptr(tvb, offset, length);
 492
 493         dest[0]='"';
 494         dest[1]=0;
 495         totlen=1;
 496         for (i=0; i < (guint32)length; i++)
 497         {
 498                 if( isalnum((int)pd[i])||ispunct((int)pd[i])
 499                                 ||((int)pd[i]==' '))            {
 500                         dest[totlen]=(gchar)pd[i];
 501                         totlen++;
 502                 }
 503                 else
 504                 {
 505                         sprintf(&(dest[totlen]), "\\%03u", pd[i]);
 506                         totlen=totlen+strlen(&(dest[totlen]));
 507                 }
 508         }
 509         dest[totlen]='"';
 510         dest[totlen+1]=0;
 511         return dest;
 512 }
 513
 514 gchar *rd_match_strval(guint32 val, const value_string *vs) {
 515         return val_to_str(val, vs, "Undefined (%u)");
 516 }
 517
 518 gchar *rd_value_to_str(e_avphdr *avph, tvbuff_t *tvb, int offset)
 519 {
 520   int print_type;
 521   gchar *cont;
 522   value_string *valstrarr;
 523   guint32 intval;
 524   const guint8 *pd;
 525   guint8 tag;
 526
 527 /* prints the values of the attribute value pairs into a text buffer */
 528   print_type=match_numval(avph->avp_type,radius_printinfo);
 529
 530   /* Default begin */
 531   strcpy(textbuffer,"Value:");
 532   cont=&textbuffer[strlen(textbuffer)];
 533   switch(print_type)
 534   {
 535         case( RADIUS_STRING ):
 536         case( RADIUS_BINSTRING ):
 537                 rdconvertbufftostr(cont,tvb,offset+2,avph->avp_length-2);
 538                 break;
 539         case( RADIUS_INTEGER4 ):
 540                 sprintf(cont,"%u", tvb_get_ntohl(tvb,offset+2));
 541                 break;
 542         case( RADIUS_IP_ADDRESS ):
 543                 ip_to_str_buf(tvb_get_ptr(tvb,offset+2,4),cont);
 544                 break;
 545         case( RADIUS_SERVICE_TYPE ):
 546                 valstrarr=radius_service_type_vals;
 547                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 548                 break;
 549         case( RADIUS_FRAMED_PROTOCOL ):
 550                 valstrarr= radius_framed_protocol_vals;
 551                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 552                 break;
 553         case( RADIUS_FRAMED_ROUTING ):
 554                 valstrarr=radius_framed_routing_vals;
 555                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 556                 break;
 557         case( RADIUS_FRAMED_COMPRESSION ):
 558                 valstrarr=radius_framed_compression_vals;
 559                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 560                 break;
 561         case( RADIUS_LOGIN_SERVICE ):
 562                 valstrarr=radius_login_service_vals;
 563                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 564                 break;
 565         case( RADIUS_IPX_ADDRESS ):
 566                 pd = tvb_get_ptr(tvb,offset+2,4);
 567                 sprintf(cont,"%u:%u:%u:%u",(guint8)pd[offset+2],
 568                         (guint8)pd[offset+3],(guint8)pd[offset+4],
 569                         (guint8)pd[offset+5]);
 570         case( RADIUS_TERMINATING_ACTION ):
 571                 valstrarr=radius_terminating_action_vals;
 572                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 573                 break;
 574         case( RADIUS_ACCOUNTING_STATUS_TYPE ):
 575                 valstrarr=radius_accounting_status_type_vals;
 576                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 577                 break;
 578         case( RADIUS_ACCT_AUTHENTIC ):
 579                 valstrarr=radius_accounting_authentication_vals;
 580                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 581                 break;
 582         case( RADIUS_ACCT_TERMINATE_CAUSE ):
 583                 valstrarr=radius_acct_terminate_cause_vals;
 584                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 585                 break;
 586         case( RADIUS_NAS_PORT_TYPE ):
 587                 valstrarr=radius_nas_port_type_vals;
 588                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 589                 break;
 590         case( RADIUS_TUNNEL_TYPE ):
 591                 valstrarr=radius_tunnel_type_vals;
 592                 /* Tagged ? */
 593                 intval = tvb_get_ntohl(tvb,offset+2);
 594                 if (intval >> 24) {
 595                         sprintf(textbuffer, "Tag:%u, Value:%s",
 596                                 intval >> 24,
 597                                 rd_match_strval(intval & 0xffffff,valstrarr));
 598                         break;
 599                 }
 600                 strcpy(cont,rd_match_strval(intval,valstrarr));
 601                 break;
 602         case( RADIUS_TUNNEL_MEDIUM_TYPE ):
 603                 valstrarr=radius_tunnel_medium_type_vals;
 604                 intval = tvb_get_ntohl(tvb,offset+2);
 605                 /* Tagged ? */
 606                 if (intval >> 24) {
 607                         sprintf(textbuffer, "Tag:%u, Value:%s",
 608                                 intval >> 24,
 609                                 rd_match_strval(intval & 0xffffff,valstrarr));
 610                         break;
 611                 }
 612                 strcpy(cont,rd_match_strval(intval,valstrarr));
 613                 break;
 614         case( RADIUS_STRING_TAGGED ):
 615                 /* Tagged ? */
 616                 tag = tvb_get_guint8(tvb,offset+2);
 617                 if (tag <= 0x1f) {
 618                         sprintf(textbuffer, "Tag:%u, Value:",
 619                                         tag);
 620                         cont=&textbuffer[strlen(textbuffer)];
 621                         rdconvertbufftostr(cont,tvb,offset+3,avph->avp_length-3);
 622                         break;
 623                 }
 624                 rdconvertbufftostr(cont,tvb,offset+2,avph->avp_length-2);
 625                 break;
 626         case ( RADIUS_VENDOR_SPECIFIC ):
 627                 valstrarr=radius_vendor_specific_vendors;
 628                 sprintf(textbuffer,"Vendor:%s, Value:",
 629                                 rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 630                 cont=&textbuffer[strlen(textbuffer)];
 631                 rdconvertbufftostr(cont,tvb,offset+6,avph->avp_length-6);
 632                 break;
 633         case( RADIUS_UNKNOWN ):
 634         default:
 635                 strcpy(textbuffer,"Unknown Value Type");
 636                 break;
 637   }
 638   if (cont == textbuffer) {
 639         strcpy(cont,"Unknown Value");
 640   }
 641   return textbuffer;
 642 }
 643
 644
 645 void dissect_attribute_value_pairs(tvbuff_t *tvb, int offset, proto_tree *tree,
 646                                    int avplength)
 647 {
 648 /* adds the attribute value pairs to the tree */
 649   e_avphdr avph;
 650   gchar *avptpstrval;
 651   gchar *valstr;
 652   if (avplength==0)
 653   {
 654         proto_tree_add_text(tree, tvb,offset,0,"No Attribute Value Pairs Found");
 655         return;
 656   }
 657
 658   while (avplength > 0 )
 659   {
 660
 661      tvb_memcpy(tvb,(guint8 *)&avph,offset,sizeof(e_avphdr));
 662      avplength=avplength-avph.avp_length;
 663      avptpstrval=match_strval(avph.avp_type, radius_attrib_type_vals);
 664      if (avptpstrval == NULL) avptpstrval="Unknown Type";
 665      valstr=rd_value_to_str(&avph, tvb, offset);
 666      proto_tree_add_text(tree, tvb,offset,avph.avp_length,
 667         "t:%s(%u) l:%u, %s",
 668         avptpstrval,avph.avp_type,avph.avp_length,valstr);
 669      offset=offset+avph.avp_length;
 670      if (avph.avp_length == 0) {
 671         break;
 672      }
 673   }
 674 }
 675
 676 static void dissect_radius(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 677 {
 678   proto_tree *radius_tree,*avptree;
 679   proto_item *ti,*avptf;
 680   int rhlength;
 681   int rhcode;
 682   int rhident;
 683   int avplength,hdrlength;
 684   e_radiushdr rh;
 685
 686   gchar *codestrval;
 687
 688   if (check_col(pinfo->fd, COL_PROTOCOL))
 689         col_set_str(pinfo->fd, COL_PROTOCOL, "RADIUS");
 690   if (check_col(pinfo->fd, COL_INFO))
 691         col_clear(pinfo->fd, COL_INFO);
 692
 693   tvb_memcpy(tvb,(guint8 *)&rh,0,sizeof(e_radiushdr));
 694
 695   rhcode= (int)rh.rh_code;
 696   rhident= (int)rh.rh_ident;
 697   rhlength= (int)ntohs(rh.rh_pktlength);
 698   codestrval=  match_strval(rhcode,radius_vals);
 699   if (codestrval==NULL)
 700   {
 701         codestrval="Unknown Packet";
 702   }
 703   if (check_col(pinfo->fd, COL_INFO))
 704   {
 705         col_add_fstr(pinfo->fd,COL_INFO,"%s(%d) (id=%d, l=%d)",
 706                 codestrval, rhcode, rhident, rhlength);
 707   }
 708
 709   if (tree)
 710   {
 711         ti = proto_tree_add_item(tree,proto_radius, tvb, 0, rhlength, FALSE);
 712
 713         radius_tree = proto_item_add_subtree(ti, ett_radius);
 714
 715         proto_tree_add_uint(radius_tree,hf_radius_code, tvb, 0, 1,
 716                 rh.rh_code);
 717         proto_tree_add_uint_format(radius_tree,hf_radius_id, tvb, 1, 1,
 718                 rh.rh_ident, "Packet identifier: 0x%01x (%d)",
 719                         rhident,rhident);
 720
 721         proto_tree_add_uint(radius_tree, hf_radius_length, tvb,
 722                         2, 2, rhlength);
 723         proto_tree_add_text(radius_tree, tvb, 4,
 724                         AUTHENTICATOR_LENGTH,
 725                          "Authenticator");
 726
 727         hdrlength=RD_HDR_LENGTH+AUTHENTICATOR_LENGTH;
 728         avplength= rhlength -hdrlength;
 729
 730         /* list the attribute value pairs */
 731
 732         avptf = proto_tree_add_text(radius_tree,
 733                         tvb,hdrlength,avplength,
 734                         "Attribute value pairs");
 735         avptree = proto_item_add_subtree(avptf, ett_radius_avp);
 736
 737         if (avptree !=NULL)
 738         {
 739                 dissect_attribute_value_pairs(tvb, hdrlength,
 740                                 avptree,avplength);
 741         }
 742   }
 743 }
 744 /* registration with the filtering engine */
 745 void
 746 proto_register_radius(void)
 747 {
 748         static hf_register_info hf[] = {
 749                 { &hf_radius_code,
 750                 { "Code","radius.code", FT_UINT8, BASE_DEC, VALS(radius_vals), 0x0,
 751                         "", HFILL }},
 752
 753                 { &hf_radius_id,
 754                 { "Identifier", "radius.id", FT_UINT8, BASE_DEC, NULL, 0x0,
 755                         "", HFILL }},
 756
 757                 { &hf_radius_length,
 758                 { "Length","radius.length", FT_UINT16, BASE_DEC, NULL, 0x0,
 759                         "", HFILL }}
 760         };
 761         static gint *ett[] = {
 762                 &ett_radius,
 763                 &ett_radius_avp,
 764         };
 765
 766         proto_radius = proto_register_protocol("Radius Protocol", "RADIUS",
 767             "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             proto_radius);
 777         dissector_add("udp.port", UDP_PORT_RADIUS_NEW, dissect_radius,
 778             proto_radius);
 779         dissector_add("udp.port", UDP_PORT_RADACCT, dissect_radius,
 780             proto_radius);
 781         dissector_add("udp.port", UDP_PORT_RADACCT_NEW, dissect_radius,
 782             proto_radius);
 783 }