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 1.33 2001/08/21 18:56:13 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 <time.h>
  44 #include "packet.h"
  45 #include "resolv.h"
  46
  47 static int proto_radius = -1;
  48 static int hf_radius_length = -1;
  49 static int hf_radius_code = -1;
  50 static int hf_radius_id =-1;
  51
  52 static gint ett_radius = -1;
  53 static gint ett_radius_avp = -1;
  54
  55 #define UDP_PORT_RADIUS         1645
  56 #define UDP_PORT_RADIUS_NEW     1812
  57 #define UDP_PORT_RADACCT        1646
  58 #define UDP_PORT_RADACCT_NEW    1813
  59
  60 typedef struct _e_radiushdr {
  61         guint8 rh_code;
  62         guint8 rh_ident;
  63         guint16 rh_pktlength;
  64 } e_radiushdr;
  65
  66 typedef struct _e_avphdr {
  67         guint8 avp_type;
  68         guint8 avp_length;
  69 } e_avphdr;
  70
  71 typedef struct _value_value_pair {
  72         guint16 val1;
  73         guint16 val2;
  74 } value_value_pair;
  75
  76 #define RADIUS_ACCESS_REQUEST 1
  77 #define RADIUS_ACCESS_ACCEPT  2
  78 #define RADIUS_ACCESS_REJECT  3
  79 #define RADIUS_ACCOUNTING_REQUEST 4
  80 #define RADIUS_ACCOUNTING_RESPONSE 5
  81 #define RADIUS_ACCESS_CHALLENGE 11
  82 #define RADIUS_STATUS_SERVER 12
  83 #define RADIUS_STATUS_CLIENT 13
  84 #define RADIUS_RESERVED 255
  85
  86 #define RD_TP_USER_NAME 1
  87 #define RD_TP_USER_PASSWORD 2
  88 #define RD_TP_CHAP_PASSWORD 3
  89 #define RD_TP_NAS_IP_ADDRESS 4
  90 #define RD_TP_NAS_PORT 5
  91 #define RD_TP_SERVICE_TYPE 6
  92 #define RD_TP_FRAMED_PROTOCOL 7
  93 #define RD_TP_FRAMED_IP_ADDRESS 8
  94 #define RD_TP_FRAMED_IP_NETMASK 9
  95 #define RD_TP_FRAMED_ROUTING 10
  96 #define RD_TP_FILTER_ID 11
  97 #define RD_TP_FRAMED_MTU 12
  98 #define RD_TP_FRAMED_COMPRESSION 13
  99 #define RD_TP_LOGIN_IP_HOST 14
 100 #define RD_TP_LOGIN_SERVICE 15
 101 #define RD_TP_LOGIN_TCP_PORT 16
 102 #define RD_TP_UNASSIGNED 17
 103 #define RD_TP_REPLY_MESSAGE 18
 104 #define RD_TP_CALLBACK_NUMBER 19
 105 #define RD_TP_CALLBACK_ID 20
 106 #define RD_TP_UNASSIGNED2 21
 107 #define RD_TP_FRAMED_ROUTE 22
 108 #define RD_TP_FRAMED_IPX_NETWORK 23
 109 #define RD_TP_STATE 24
 110 #define RD_TP_CLASS 25
 111 #define RD_TP_VENDOR_SPECIFIC 26
 112 #define RD_TP_SESSION_TIMEOUT 27
 113 #define RD_TP_IDLE_TIMEOUT 28
 114 #define RD_TP_TERMINATING_ACTION 29
 115 #define RD_TP_CALLED_STATION_ID 30
 116 #define RD_TP_CALLING_STATION_ID 31
 117 #define RD_TP_NAS_IDENTIFIER 32
 118 #define RD_TP_PROXY_STATE 33
 119 #define RD_TP_LOGIN_LAT_SERVICE 34
 120 #define RD_TP_LOGIN_LAT_NODE 35
 121 #define RD_TP_LOGIN_LAT_GROUP 36
 122 #define RD_TP_FRAMED_APPLETALK_LINK 37
 123 #define RD_TP_FRAMED_APPLETALK_NETWORK 38
 124 #define RD_TP_FRAMED_APPLETALK_ZONE 39
 125 #define RD_TP_ACCT_STATUS_TYPE 40
 126 #define RD_TP_ACCT_DELAY_TIME 41
 127 #define RD_TP_ACCT_INPUT_OCTETS 42
 128 #define RD_TP_ACCT_OUTPUT_OCTETS 43
 129 #define RD_TP_ACCT_SESSION_ID 44
 130 #define RD_TP_ACCT_AUTHENTIC 45
 131 #define RD_TP_ACCT_SESSION_TIME 46
 132 #define RD_TP_ACCT_INPUT_PACKETS 47
 133 #define RD_TP_ACCT_OUTPUT_PACKETS 48
 134 #define RD_TP_ACCT_TERMINATE_CAUSE 49
 135 #define RD_TP_ACCT_MULTI_SESSION_ID 50
 136 #define RD_TP_ACCT_LINK_COUNT 51
 137 #define RD_TP_ACCT_INPUT_GIGAWORDS 52
 138 #define RD_TP_ACCT_OUTPUT_GIGAWORDS 53
 139 #define RD_TP_EVENT_TIMESTAMP 55
 140 #define RD_TP_CHAP_CHALLENGE 60
 141 #define RD_TP_NAS_PORT_TYPE 61
 142 #define RD_TP_PORT_LIMIT 62
 143 #define RD_TP_LOGIN_LAT_PORT 63
 144 #define RD_TP_TUNNEL_TYPE 64
 145 #define RD_TP_TUNNEL_MEDIUM_TYPE 65
 146 #define RD_TP_TUNNEL_CLIENT_ENDPOINT 66
 147 #define RD_TP_TUNNEL_SERVER_ENDPOINT 67
 148 #define RD_TP_TUNNEL_PASSWORD 69
 149 #define RD_TP_CONNECT_INFO 77
 150 #define RD_TP_TUNNEL_ASSIGNMENT_ID 82
 151 #define RD_TP_NAS_PORT_ID 87
 152 #define RD_TP_ASCEND_PRE_INPUT_OCTETS 190
 153 #define RD_TP_ASCEND_PRE_OUTPUT_OCTETS 191
 154 #define RD_TP_ASCEND_PRE_INPUT_PACKETS 192
 155 #define RD_TP_ASCEND_PRE_OUTPUT_PACKETS 193
 156 #define RD_TP_ASCEND_MAXIMUM_TIME 194
 157 #define RD_TP_ASCEND_DISCONNECT_CAUSE 195
 158 #define RD_TP_ASCEND_CONNECT_PROGRESS 196
 159 #define RD_TP_ASCEND_DATA_RATE 197
 160 #define RD_TP_ASCEND_PRESESSION_TIME 198
 161 #define RD_TP_ASCEND_XMIT_RATE 255
 162
 163
 164
 165
 166
 167 #define AUTHENTICATOR_LENGTH 16
 168 #define RD_HDR_LENGTH 4
 169
 170
 171 #define RADIUS_STRING 1
 172 #define RADIUS_BINSTRING 2
 173 #define RADIUS_INTEGER4 3
 174 #define RADIUS_IP_ADDRESS 4
 175 #define RADIUS_SERVICE_TYPE 5
 176 #define RADIUS_FRAMED_PROTOCOL 6
 177 #define RADIUS_FRAMED_ROUTING 7
 178 #define RADIUS_FRAMED_COMPRESSION 8
 179 #define RADIUS_LOGIN_SERVICE 9
 180 #define RADIUS_UNKNOWN 10
 181 #define RADIUS_IPX_ADDRESS 11
 182 #define RADIUS_TERMINATING_ACTION 12
 183 #define RADIUS_ACCOUNTING_STATUS_TYPE 13
 184 #define RADIUS_ACCT_AUTHENTIC 14
 185 #define RADIUS_ACCT_TERMINATE_CAUSE 15
 186 #define RADIUS_NAS_PORT_TYPE 16
 187 #define RADIUS_TUNNEL_TYPE 17
 188 #define RADIUS_TUNNEL_MEDIUM_TYPE 18
 189 #define RADIUS_STRING_TAGGED 19
 190 #define RADIUS_VENDOR_SPECIFIC 20
 191 #define RADIUS_TIMESTAMP 21
 192
 193 static value_string radius_vals[] = {
 194  {RADIUS_ACCESS_REQUEST, "Access Request"},
 195  {RADIUS_ACCESS_ACCEPT, "Access Accept"},
 196  {RADIUS_ACCESS_REJECT, "Access Reject"},
 197  {RADIUS_ACCOUNTING_REQUEST, "Accounting Request"},
 198  {RADIUS_ACCOUNTING_RESPONSE, "Accounting Response"},
 199  {RADIUS_ACCESS_CHALLENGE, "Accounting challenge"},
 200  {RADIUS_STATUS_SERVER, "StatusServer"},
 201  {RADIUS_STATUS_CLIENT, "StatusClient"},
 202  {RADIUS_RESERVED, "Reserved"},
 203 {0, NULL}};
 204
 205 static value_string radius_service_type_vals[]=
 206 {{1, "Login"},
 207 {2, "Framed"},
 208 {3, "Callback Login"},
 209 {4, "Callback Framed"},
 210 {5, "Outbound"},
 211 {6, "Administrative"},
 212 {7, "NAS Prompt"},
 213 {8, "Authenticate Only"},
 214 {9, "Callback NAS Prompt"},
 215 {10, "Call Check"},
 216 {0,NULL}};
 217
 218 /*
 219  * These are SMI Network Management Private Enterprise Codes for
 220  * organizations; see
 221  *
 222  *      http://www.isi.edu/in-notes/iana/assignments/enterprise-numbers
 223  *
 224  * for a list.
 225  */
 226 static value_string radius_vendor_specific_vendors[]=
 227 {{5, "ACC"},
 228 {9,"Cisco"},
 229 {166,"Shiva"},
 230 {307,"Livingston"},
 231 {429,"3Com"},
 232 {529,"Ascend"},
 233 {1584,"Bay Networks"},
 234 {2636,"Juniper Networks"},
 235 {4874,"Unisphere Networks"},
 236 {0,NULL}};
 237
 238 static value_string radius_framed_protocol_vals[]=
 239 {{1, "PPP"},
 240 {2, "SLIP"},
 241 {3, "Appletalk Remote Access Protocol (ARAP)"},
 242 {4, "Gandalf proprietary Singlelink/Multilink Protocol"},
 243 {5, "Xylogics proprietary IPX/SLIP"},
 244 {6, "X.75 Synchronous"},
 245 {0,NULL}};
 246
 247 static value_string radius_framed_routing_vals[]=
 248 {{1, "Send Routing Packets"},
 249 {2, "Listen for routing packets"},
 250 {3, "Send and Listen"},
 251 {0,"None"},
 252 {0,NULL}};
 253
 254 static value_string radius_framed_compression_vals[]=
 255 {{1, "VJ TCP/IP Header Compression"},
 256 {2, "IPX Header Compression"},
 257 {3, "Stac-LZS compression"},
 258 {0, "None"},
 259 {0,NULL}};
 260
 261 static value_string radius_login_service_vals[]=
 262 {{1, "Rlogin"},
 263 {2, "TCP Clear"},
 264 {3, "Portmaster"},
 265 {4, "LAT"},
 266 {5, "X.25-PAD"},
 267 {6, "X.25T3POS"},
 268 {8, "TCP Clear Quit"},
 269 {0, "Telnet"},
 270 {0,NULL}};
 271
 272 static value_string radius_terminating_action_vals[]=
 273 {{1, "RADIUS-Request"},
 274 {0, "Default"},
 275 {0,NULL}};
 276
 277 static value_string radius_accounting_status_type_vals[]=
 278 {{1, "Start"},
 279 {2, "Stop"},
 280 {3, "Interim-Update"},
 281 {7,"Accounting-On"},
 282 {8,"Accounting-Off"},
 283 {0,NULL}};
 284
 285 static value_string radius_accounting_authentication_vals[]=
 286 {{1, "Radius"},
 287 {2, "Local"},
 288 {7,"Remote"},
 289 {0,NULL}};
 290
 291 static value_string radius_acct_terminate_cause_vals[]=
 292 {{1, "User Request"},
 293 {2, "Lost Carrier"},
 294 {3,"Lost Service"},
 295 {4, "Idle Timeout"},
 296 {5,"Session Timeout"},
 297 {6, "Admin Reset"},
 298 {7, "Admin Reboot"},
 299 {8, "Port Error"},
 300 {9, "NAS Error"},
 301 {10, "NAS Request"},
 302 {11,"NAS Reboot"},
 303 {12, "Port Unneeded"},
 304 {13, "Port Preempted"},
 305 {14,"Port Suspended"},
 306 {15,"Service Unavailable"},
 307 {16,"Callback"},
 308 {17, "User Error"},
 309 {18,"Host Request"},
 310 {0,NULL}};
 311
 312 static value_string radius_tunnel_type_vals[]=
 313 {{1,"PPTP"},
 314 {2,"L2F"},
 315 {3,"L2TP"},
 316 {4,"ATMP"},
 317 {5,"VTP"},
 318 {6,"AH"},
 319 {7,"IP-IP-Encap"},
 320 {8,"MIN-IP-IP"},
 321 {9,"ESP"},
 322 {10,"GRE"},
 323 {11,"DVS"},
 324 {12,"IP-IP"},
 325 {0,NULL}};
 326
 327 static value_string radius_tunnel_medium_type_vals[]=
 328 {{1,"IPv4"},
 329 {2,"IPv6"},
 330 {3,"NSAP"},
 331 {4,"HDLC"},
 332 {5,"BBN"},
 333 {6,"IEEE-802"},
 334 {7,"E-163"},
 335 {8,"E-164"},
 336 {9,"F-69"},
 337 {10,"X-121"},
 338 {11,"IPX"},
 339 {12,"Appletalk"},
 340 {13,"Decnet4"},
 341 {14,"Vines"},
 342 {15,"E-164-NSAP"},
 343 {0,NULL}};
 344
 345 static value_string radius_nas_port_type_vals[]=
 346 {{0, "Async"},
 347 {1, "Sync"},
 348 {2,"ISDN Sync"},
 349 {3, "ISDN Async V.120"},
 350 {4,"ISDN Async V.110"},
 351 {5, "Virtual"},
 352 {6, "PIAFS"},
 353 {7, "HDLC Clear Channel"},
 354 {8, "X.25"},
 355 {9,"X.75"},
 356 {10, "G.3 Fax"},
 357 {11,"SDSL"},
 358 {12, "ADSL-CAP"},
 359 {13, "ADSL-DMT"},
 360 {14,"IDSL - ISDN"},
 361 {15,"Ethernet"},
 362 {16,"xDSL"},
 363 {17,"Cable"},
 364 {18,"Wireless Other"},
 365 {19,"Wireless IEEE 802.11"},
 366 {0,NULL}};
 367
 368 static value_value_pair radius_printinfo[] = {
 369 { RD_TP_USER_NAME, RADIUS_STRING },
 370 { RD_TP_USER_PASSWORD,RADIUS_BINSTRING },
 371 { RD_TP_CHAP_PASSWORD, RADIUS_BINSTRING },
 372 { RD_TP_NAS_IP_ADDRESS, RADIUS_IP_ADDRESS },
 373 { RD_TP_NAS_PORT, RADIUS_INTEGER4},
 374 { RD_TP_SERVICE_TYPE, RADIUS_SERVICE_TYPE},
 375 { RD_TP_FRAMED_PROTOCOL, RADIUS_FRAMED_PROTOCOL},
 376 { RD_TP_FRAMED_IP_ADDRESS, RADIUS_IP_ADDRESS},
 377 { RD_TP_FRAMED_IP_NETMASK, RADIUS_IP_ADDRESS},
 378 { RD_TP_FRAMED_ROUTING, RADIUS_FRAMED_ROUTING},
 379 { RD_TP_FILTER_ID, RADIUS_STRING},
 380 { RD_TP_FRAMED_MTU, RADIUS_INTEGER4},
 381 { RD_TP_FRAMED_COMPRESSION, RADIUS_FRAMED_COMPRESSION},
 382 { RD_TP_LOGIN_IP_HOST, RADIUS_IP_ADDRESS},
 383 { RD_TP_LOGIN_SERVICE, RADIUS_LOGIN_SERVICE},
 384 { RD_TP_LOGIN_TCP_PORT, RADIUS_INTEGER4},
 385 { RD_TP_UNASSIGNED, RADIUS_UNKNOWN},
 386 { RD_TP_REPLY_MESSAGE, RADIUS_STRING},
 387 { RD_TP_CALLBACK_NUMBER, RADIUS_BINSTRING},
 388 { RD_TP_CALLBACK_ID, RADIUS_BINSTRING},
 389 { RD_TP_UNASSIGNED2, RADIUS_UNKNOWN},
 390 { RD_TP_FRAMED_ROUTE, RADIUS_STRING},
 391 { RD_TP_FRAMED_IPX_NETWORK, RADIUS_IPX_ADDRESS},
 392 { RD_TP_STATE, RADIUS_BINSTRING},
 393 { RD_TP_CLASS, RADIUS_BINSTRING},
 394 { RD_TP_VENDOR_SPECIFIC, RADIUS_VENDOR_SPECIFIC},
 395 { RD_TP_SESSION_TIMEOUT, RADIUS_INTEGER4},
 396 { RD_TP_IDLE_TIMEOUT, RADIUS_INTEGER4},
 397 { RD_TP_TERMINATING_ACTION, RADIUS_TERMINATING_ACTION},
 398 { RD_TP_CALLED_STATION_ID, RADIUS_BINSTRING},
 399 { RD_TP_CALLING_STATION_ID, RADIUS_BINSTRING},
 400 { RD_TP_NAS_IDENTIFIER, RADIUS_BINSTRING},
 401 { RD_TP_PROXY_STATE, RADIUS_BINSTRING},
 402 { RD_TP_LOGIN_LAT_SERVICE, RADIUS_BINSTRING},
 403 { RD_TP_LOGIN_LAT_NODE, RADIUS_BINSTRING},
 404 { RD_TP_LOGIN_LAT_GROUP, RADIUS_BINSTRING},
 405 { RD_TP_FRAMED_APPLETALK_LINK, RADIUS_INTEGER4},
 406 { RD_TP_FRAMED_APPLETALK_NETWORK, RADIUS_INTEGER4},
 407 { RD_TP_FRAMED_APPLETALK_ZONE, RADIUS_BINSTRING},
 408 { RD_TP_ACCT_STATUS_TYPE, RADIUS_ACCOUNTING_STATUS_TYPE},
 409 { RD_TP_ACCT_DELAY_TIME, RADIUS_INTEGER4},
 410 { RD_TP_ACCT_INPUT_OCTETS, RADIUS_INTEGER4},
 411 { RD_TP_ACCT_OUTPUT_OCTETS, RADIUS_INTEGER4},
 412 { RD_TP_ACCT_SESSION_ID, RADIUS_STRING},
 413 { RD_TP_ACCT_AUTHENTIC, RADIUS_ACCT_AUTHENTIC},
 414 { RD_TP_ACCT_SESSION_TIME, RADIUS_INTEGER4},
 415 { RD_TP_ACCT_INPUT_PACKETS, RADIUS_INTEGER4},
 416 { RD_TP_ACCT_OUTPUT_PACKETS, RADIUS_INTEGER4},
 417 { RD_TP_ACCT_TERMINATE_CAUSE, RADIUS_ACCT_TERMINATE_CAUSE},
 418 { RD_TP_ACCT_MULTI_SESSION_ID, RADIUS_STRING},
 419 { RD_TP_ACCT_LINK_COUNT, RADIUS_INTEGER4},
 420 { RD_TP_ACCT_INPUT_GIGAWORDS, RADIUS_INTEGER4},
 421 { RD_TP_ACCT_OUTPUT_GIGAWORDS, RADIUS_INTEGER4},
 422 { RD_TP_EVENT_TIMESTAMP, RADIUS_TIMESTAMP},
 423 { RD_TP_CHAP_CHALLENGE, RADIUS_BINSTRING},
 424 { RD_TP_NAS_PORT_TYPE, RADIUS_NAS_PORT_TYPE},
 425 { RD_TP_PORT_LIMIT, RADIUS_INTEGER4},
 426 { RD_TP_LOGIN_LAT_PORT, RADIUS_BINSTRING},
 427 { RD_TP_TUNNEL_TYPE, RADIUS_TUNNEL_TYPE},
 428 { RD_TP_TUNNEL_MEDIUM_TYPE, RADIUS_TUNNEL_MEDIUM_TYPE},
 429 { RD_TP_TUNNEL_CLIENT_ENDPOINT, RADIUS_STRING_TAGGED},
 430 { RD_TP_TUNNEL_SERVER_ENDPOINT, RADIUS_STRING_TAGGED},
 431 { RD_TP_TUNNEL_PASSWORD, RADIUS_STRING_TAGGED},
 432 { RD_TP_CONNECT_INFO, RADIUS_STRING_TAGGED},
 433 { RD_TP_TUNNEL_ASSIGNMENT_ID, RADIUS_STRING_TAGGED},
 434 { RD_TP_NAS_PORT_ID, RADIUS_STRING},
 435 { RD_TP_ASCEND_PRE_INPUT_OCTETS, RADIUS_INTEGER4},
 436 { RD_TP_ASCEND_PRE_OUTPUT_OCTETS, RADIUS_INTEGER4},
 437 { RD_TP_ASCEND_PRE_INPUT_PACKETS, RADIUS_INTEGER4},
 438 { RD_TP_ASCEND_PRE_OUTPUT_PACKETS, RADIUS_INTEGER4},
 439 { RD_TP_ASCEND_MAXIMUM_TIME, RADIUS_INTEGER4},
 440 { RD_TP_ASCEND_DISCONNECT_CAUSE, RADIUS_INTEGER4},
 441 { RD_TP_ASCEND_CONNECT_PROGRESS, RADIUS_INTEGER4},
 442 { RD_TP_ASCEND_DATA_RATE, RADIUS_INTEGER4},
 443 { RD_TP_ASCEND_PRESESSION_TIME, RADIUS_INTEGER4},
 444 { RD_TP_ASCEND_XMIT_RATE, RADIUS_INTEGER4},
 445 {0,0},
 446 };
 447
 448 static value_string radius_attrib_type_vals[] = {
 449 { RD_TP_USER_NAME, "User Name"},
 450 { RD_TP_USER_PASSWORD, "User Password"},
 451 { RD_TP_CHAP_PASSWORD, "Chap Password"},
 452 { RD_TP_NAS_IP_ADDRESS, "NAS IP Address"},
 453 { RD_TP_NAS_PORT, "NAS Port"},
 454 { RD_TP_SERVICE_TYPE, "Service Type"},
 455 { RD_TP_FRAMED_PROTOCOL, "Framed Protocol"},
 456 { RD_TP_FRAMED_IP_ADDRESS, "Framed IP Address"},
 457 { RD_TP_FRAMED_IP_NETMASK, "Framed IP Netmask"},
 458 { RD_TP_FRAMED_ROUTING, "Framed Routing"},
 459 { RD_TP_FILTER_ID, "Filter Id"},
 460 { RD_TP_FRAMED_MTU, "Framed MTU"},
 461 { RD_TP_FRAMED_COMPRESSION, "Framed Compression"},
 462 { RD_TP_LOGIN_IP_HOST, "Login IP Host"},
 463 { RD_TP_LOGIN_SERVICE, "Login Service"},
 464 { RD_TP_LOGIN_TCP_PORT, "Login TCP Port"},
 465 { RD_TP_UNASSIGNED, "Unassigned"},
 466 { RD_TP_REPLY_MESSAGE, "Reply Message"},
 467 { RD_TP_CALLBACK_NUMBER, "Callback Number"},
 468 { RD_TP_CALLBACK_ID, "Callback Id"},
 469 { RD_TP_UNASSIGNED2, "Unassigned"},
 470 { RD_TP_FRAMED_ROUTE, "Framed Route"},
 471 { RD_TP_FRAMED_IPX_NETWORK, "Framed IPX network"},
 472 { RD_TP_STATE, "State"},
 473 { RD_TP_CLASS, "Class"},
 474 { RD_TP_VENDOR_SPECIFIC, "Vendor Specific" },
 475 { RD_TP_SESSION_TIMEOUT, "Session Timeout"},
 476 { RD_TP_IDLE_TIMEOUT, "Idle Timeout"},
 477 { RD_TP_TERMINATING_ACTION, "Terminating Action"},
 478 { RD_TP_CALLED_STATION_ID, "Called Station Id"},
 479 { RD_TP_CALLING_STATION_ID, "Calling Station Id"},
 480 { RD_TP_NAS_IDENTIFIER, "NAS identifier"},
 481 { RD_TP_PROXY_STATE, "Proxy State"},
 482 { RD_TP_LOGIN_LAT_SERVICE, "Login LAT Service"},
 483 { RD_TP_LOGIN_LAT_NODE, "Login LAT Node"},
 484 { RD_TP_LOGIN_LAT_GROUP, "Login LAT Group"},
 485 { RD_TP_FRAMED_APPLETALK_LINK, "Framed Appletalk Link"},
 486 { RD_TP_FRAMED_APPLETALK_NETWORK, "Framed Appletalk Network"},
 487 { RD_TP_FRAMED_APPLETALK_ZONE, "Framed Appletalk Zone"},
 488 { RD_TP_ACCT_STATUS_TYPE, "Acct Status Type"},
 489 { RD_TP_ACCT_DELAY_TIME, "Acct Delay Time"},
 490 { RD_TP_ACCT_INPUT_OCTETS, "Acct Input Octets"},
 491 { RD_TP_ACCT_OUTPUT_OCTETS, "Acct Output Octets"},
 492 { RD_TP_ACCT_SESSION_ID, "Acct Session Id"},
 493 { RD_TP_ACCT_AUTHENTIC, "Acct Authentic"},
 494 { RD_TP_ACCT_SESSION_TIME, "Acct Session Time"},
 495 { RD_TP_ACCT_INPUT_PACKETS, "Acct Input Packets"},
 496 { RD_TP_ACCT_OUTPUT_PACKETS, "Acct Output Packets"},
 497 { RD_TP_ACCT_TERMINATE_CAUSE, "Acct Terminate Cause"},
 498 { RD_TP_ACCT_MULTI_SESSION_ID, "Acct Multi Session Id"},
 499 { RD_TP_ACCT_LINK_COUNT, "Acct Link Count"},
 500 { RD_TP_ACCT_INPUT_GIGAWORDS, "Acct Input Gigawords"},
 501 { RD_TP_ACCT_OUTPUT_GIGAWORDS, "Acct Output Gigawords"},
 502 { RD_TP_EVENT_TIMESTAMP, "Event Timestamp"},
 503 { RD_TP_CHAP_CHALLENGE, "Chap Challenge"},
 504 { RD_TP_NAS_PORT_TYPE, "NAS Port Type"},
 505 { RD_TP_PORT_LIMIT, "Port Limit"},
 506 { RD_TP_LOGIN_LAT_PORT, "Login LAT Port"},
 507 { RD_TP_TUNNEL_TYPE, "Tunnel Type"},
 508 { RD_TP_TUNNEL_MEDIUM_TYPE, "Tunnel Medium Type"},
 509 { RD_TP_TUNNEL_CLIENT_ENDPOINT, "Tunnel Client Endpoint"},
 510 { RD_TP_TUNNEL_SERVER_ENDPOINT, "Tunnel Server Endpoint"},
 511 { RD_TP_TUNNEL_PASSWORD, "Tunnel Password"},
 512 { RD_TP_CONNECT_INFO, "Connect-Info"},
 513 { RD_TP_TUNNEL_ASSIGNMENT_ID, "Tunnel Assignment ID"},
 514 { RD_TP_NAS_PORT_ID, "NAS Port ID"},
 515 { RD_TP_ASCEND_PRE_INPUT_OCTETS, "Ascend Pre Input Octets"},
 516 { RD_TP_ASCEND_PRE_OUTPUT_OCTETS, "Ascend Pre Output Octets"},
 517 { RD_TP_ASCEND_PRE_INPUT_PACKETS, "Ascend Pre Input Packets"},
 518 { RD_TP_ASCEND_PRE_OUTPUT_PACKETS, "Ascend Pre Output Packets"},
 519 { RD_TP_ASCEND_MAXIMUM_TIME, "Ascend Maximum Time"},
 520 { RD_TP_ASCEND_DISCONNECT_CAUSE, "Ascend Disconnect Cause"},
 521 { RD_TP_ASCEND_CONNECT_PROGRESS, "Ascend Connect Progress"},
 522 { RD_TP_ASCEND_DATA_RATE, "Ascend Data Rate"},
 523 { RD_TP_ASCEND_PRESESSION_TIME, "Ascend PreSession Time"},
 524 { RD_TP_ASCEND_XMIT_RATE, "Ascend Xmit Rate"},
 525 {0,NULL},
 526 };
 527
 528 guint32 match_numval(guint32 val, const value_value_pair *vs)
 529 {
 530   guint32 i = 0;
 531
 532   while (vs[i].val1) {
 533     if (vs[i].val1 == val)
 534       return(vs[i].val2);
 535     i++;
 536   }
 537
 538   return(0);
 539 }
 540
 541 static gchar textbuffer[2000];
 542
 543 gchar *rdconvertbufftostr(gchar *dest, tvbuff_t *tvb, int offset, int length)
 544 {
 545 /*converts the raw buffer into printable text */
 546         guint32 i;
 547         guint32 totlen=0;
 548         const guint8 *pd = tvb_get_ptr(tvb, offset, length);
 549
 550         dest[0]='"';
 551         dest[1]=0;
 552         totlen=1;
 553         for (i=0; i < (guint32)length; i++)
 554         {
 555                 if( isalnum((int)pd[i])||ispunct((int)pd[i])
 556                                 ||((int)pd[i]==' '))            {
 557                         dest[totlen]=(gchar)pd[i];
 558                         totlen++;
 559                 }
 560                 else
 561                 {
 562                         sprintf(&(dest[totlen]), "\\%03u", pd[i]);
 563                         totlen=totlen+strlen(&(dest[totlen]));
 564                 }
 565         }
 566         dest[totlen]='"';
 567         dest[totlen+1]=0;
 568         return dest;
 569 }
 570
 571 gchar *rd_match_strval(guint32 val, const value_string *vs) {
 572         return val_to_str(val, vs, "Undefined (%u)");
 573 }
 574
 575 gchar *rd_value_to_str(e_avphdr *avph, tvbuff_t *tvb, int offset)
 576 {
 577   int print_type;
 578   gchar *cont;
 579   value_string *valstrarr;
 580   guint32 intval;
 581   const guint8 *pd;
 582   guint8 tag;
 583   char *rtimestamp;
 584   extern char *tzname[2];
 585
 586 /* prints the values of the attribute value pairs into a text buffer */
 587   print_type=match_numval(avph->avp_type,radius_printinfo);
 588
 589   /* Default begin */
 590   strcpy(textbuffer,"Value:");
 591   cont=&textbuffer[strlen(textbuffer)];
 592   switch(print_type)
 593   {
 594         case( RADIUS_STRING ):
 595         case( RADIUS_BINSTRING ):
 596                 rdconvertbufftostr(cont,tvb,offset+2,avph->avp_length-2);
 597                 break;
 598         case( RADIUS_INTEGER4 ):
 599                 sprintf(cont,"%u", tvb_get_ntohl(tvb,offset+2));
 600                 break;
 601         case( RADIUS_IP_ADDRESS ):
 602                 ip_to_str_buf(tvb_get_ptr(tvb,offset+2,4),cont);
 603                 break;
 604         case( RADIUS_SERVICE_TYPE ):
 605                 valstrarr=radius_service_type_vals;
 606                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 607                 break;
 608         case( RADIUS_FRAMED_PROTOCOL ):
 609                 valstrarr= radius_framed_protocol_vals;
 610                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 611                 break;
 612         case( RADIUS_FRAMED_ROUTING ):
 613                 valstrarr=radius_framed_routing_vals;
 614                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 615                 break;
 616         case( RADIUS_FRAMED_COMPRESSION ):
 617                 valstrarr=radius_framed_compression_vals;
 618                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 619                 break;
 620         case( RADIUS_LOGIN_SERVICE ):
 621                 valstrarr=radius_login_service_vals;
 622                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 623                 break;
 624         case( RADIUS_IPX_ADDRESS ):
 625                 pd = tvb_get_ptr(tvb,offset+2,4);
 626                 sprintf(cont,"%u:%u:%u:%u",(guint8)pd[offset+2],
 627                         (guint8)pd[offset+3],(guint8)pd[offset+4],
 628                         (guint8)pd[offset+5]);
 629         case( RADIUS_TERMINATING_ACTION ):
 630                 valstrarr=radius_terminating_action_vals;
 631                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 632                 break;
 633         case( RADIUS_ACCOUNTING_STATUS_TYPE ):
 634                 valstrarr=radius_accounting_status_type_vals;
 635                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 636                 break;
 637         case( RADIUS_ACCT_AUTHENTIC ):
 638                 valstrarr=radius_accounting_authentication_vals;
 639                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 640                 break;
 641         case( RADIUS_ACCT_TERMINATE_CAUSE ):
 642                 valstrarr=radius_acct_terminate_cause_vals;
 643                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 644                 break;
 645         case( RADIUS_NAS_PORT_TYPE ):
 646                 valstrarr=radius_nas_port_type_vals;
 647                 strcpy(cont,rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 648                 break;
 649         case( RADIUS_TUNNEL_TYPE ):
 650                 valstrarr=radius_tunnel_type_vals;
 651                 /* Tagged ? */
 652                 intval = tvb_get_ntohl(tvb,offset+2);
 653                 if (intval >> 24) {
 654                         sprintf(textbuffer, "Tag:%u, Value:%s",
 655                                 intval >> 24,
 656                                 rd_match_strval(intval & 0xffffff,valstrarr));
 657                         break;
 658                 }
 659                 strcpy(cont,rd_match_strval(intval,valstrarr));
 660                 break;
 661         case( RADIUS_TUNNEL_MEDIUM_TYPE ):
 662                 valstrarr=radius_tunnel_medium_type_vals;
 663                 intval = tvb_get_ntohl(tvb,offset+2);
 664                 /* Tagged ? */
 665                 if (intval >> 24) {
 666                         sprintf(textbuffer, "Tag:%u, Value:%s",
 667                                 intval >> 24,
 668                                 rd_match_strval(intval & 0xffffff,valstrarr));
 669                         break;
 670                 }
 671                 strcpy(cont,rd_match_strval(intval,valstrarr));
 672                 break;
 673         case( RADIUS_STRING_TAGGED ):
 674                 /* Tagged ? */
 675                 tag = tvb_get_guint8(tvb,offset+2);
 676                 if (tag <= 0x1f) {
 677                         sprintf(textbuffer, "Tag:%u, Value:",
 678                                         tag);
 679                         cont=&textbuffer[strlen(textbuffer)];
 680                         rdconvertbufftostr(cont,tvb,offset+3,avph->avp_length-3);
 681                         break;
 682                 }
 683                 rdconvertbufftostr(cont,tvb,offset+2,avph->avp_length-2);
 684                 break;
 685         case ( RADIUS_VENDOR_SPECIFIC ):
 686                 valstrarr=radius_vendor_specific_vendors;
 687                 sprintf(textbuffer,"Vendor:%s, Value:",
 688                                 rd_match_strval(tvb_get_ntohl(tvb,offset+2),valstrarr));
 689                 cont=&textbuffer[strlen(textbuffer)];
 690                 rdconvertbufftostr(cont,tvb,offset+6,avph->avp_length-6);
 691                 break;
 692         case( RADIUS_TIMESTAMP ):
 693                 intval=tvb_get_ntohl(tvb,offset+2);
 694                 rtimestamp=ctime((time_t*)&intval);
 695                 rtimestamp[strlen(rtimestamp)-1]=0;
 696                 sprintf(cont,"%d (%s %s)", tvb_get_ntohl(tvb,offset+2), rtimestamp, *tzname);
 697                 break;
 698         case( RADIUS_UNKNOWN ):
 699         default:
 700                 strcpy(textbuffer,"Unknown Value Type");
 701                 break;
 702   }
 703   if (cont == textbuffer) {
 704         strcpy(cont,"Unknown Value");
 705   }
 706   return textbuffer;
 707 }
 708
 709
 710 void dissect_attribute_value_pairs(tvbuff_t *tvb, int offset, proto_tree *tree,
 711                                    int avplength)
 712 {
 713 /* adds the attribute value pairs to the tree */
 714   e_avphdr avph;
 715   gchar *avptpstrval;
 716   gchar *valstr;
 717   if (avplength==0)
 718   {
 719         proto_tree_add_text(tree, tvb,offset,0,"No Attribute Value Pairs Found");
 720         return;
 721   }
 722
 723   while (avplength > 0 )
 724   {
 725
 726      tvb_memcpy(tvb,(guint8 *)&avph,offset,sizeof(e_avphdr));
 727      avplength=avplength-avph.avp_length;
 728      avptpstrval=match_strval(avph.avp_type, radius_attrib_type_vals);
 729      if (avptpstrval == NULL) avptpstrval="Unknown Type";
 730      valstr=rd_value_to_str(&avph, tvb, offset);
 731      proto_tree_add_text(tree, tvb,offset,avph.avp_length,
 732         "t:%s(%u) l:%u, %s",
 733         avptpstrval,avph.avp_type,avph.avp_length,valstr);
 734      offset=offset+avph.avp_length;
 735      if (avph.avp_length == 0) {
 736         break;
 737      }
 738   }
 739 }
 740
 741 static void dissect_radius(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 742 {
 743   proto_tree *radius_tree,*avptree;
 744   proto_item *ti,*avptf;
 745   int rhlength;
 746   int rhcode;
 747   int rhident;
 748   int avplength,hdrlength;
 749   e_radiushdr rh;
 750
 751   gchar *codestrval;
 752
 753   if (check_col(pinfo->fd, COL_PROTOCOL))
 754         col_set_str(pinfo->fd, COL_PROTOCOL, "RADIUS");
 755   if (check_col(pinfo->fd, COL_INFO))
 756         col_clear(pinfo->fd, COL_INFO);
 757
 758   tvb_memcpy(tvb,(guint8 *)&rh,0,sizeof(e_radiushdr));
 759
 760   rhcode= (int)rh.rh_code;
 761   rhident= (int)rh.rh_ident;
 762   rhlength= (int)ntohs(rh.rh_pktlength);
 763   codestrval=  match_strval(rhcode,radius_vals);
 764   if (codestrval==NULL)
 765   {
 766         codestrval="Unknown Packet";
 767   }
 768   if (check_col(pinfo->fd, COL_INFO))
 769   {
 770         col_add_fstr(pinfo->fd,COL_INFO,"%s(%d) (id=%d, l=%d)",
 771                 codestrval, rhcode, rhident, rhlength);
 772   }
 773
 774   if (tree)
 775   {
 776         ti = proto_tree_add_item(tree,proto_radius, tvb, 0, rhlength, FALSE);
 777
 778         radius_tree = proto_item_add_subtree(ti, ett_radius);
 779
 780         proto_tree_add_uint(radius_tree,hf_radius_code, tvb, 0, 1,
 781                 rh.rh_code);
 782         proto_tree_add_uint_format(radius_tree,hf_radius_id, tvb, 1, 1,
 783                 rh.rh_ident, "Packet identifier: 0x%01x (%d)",
 784                         rhident,rhident);
 785
 786         proto_tree_add_uint(radius_tree, hf_radius_length, tvb,
 787                         2, 2, rhlength);
 788         proto_tree_add_text(radius_tree, tvb, 4,
 789                         AUTHENTICATOR_LENGTH,
 790                          "Authenticator");
 791
 792         hdrlength=RD_HDR_LENGTH+AUTHENTICATOR_LENGTH;
 793         avplength= rhlength -hdrlength;
 794
 795         if (avplength > 0) {
 796                 /* list the attribute value pairs */
 797
 798                 avptf = proto_tree_add_text(radius_tree,
 799                                 tvb,hdrlength,avplength,
 800                                 "Attribute value pairs");
 801                 avptree = proto_item_add_subtree(avptf, ett_radius_avp);
 802
 803                 if (avptree !=NULL)
 804                 {
 805                         dissect_attribute_value_pairs(tvb, hdrlength,
 806                                 avptree,avplength);
 807                 }
 808         }
 809   }
 810 }
 811 /* registration with the filtering engine */
 812 void
 813 proto_register_radius(void)
 814 {
 815         static hf_register_info hf[] = {
 816                 { &hf_radius_code,
 817                 { "Code","radius.code", FT_UINT8, BASE_DEC, VALS(radius_vals), 0x0,
 818                         "", HFILL }},
 819
 820                 { &hf_radius_id,
 821                 { "Identifier", "radius.id", FT_UINT8, BASE_DEC, NULL, 0x0,
 822                         "", HFILL }},
 823
 824                 { &hf_radius_length,
 825                 { "Length","radius.length", FT_UINT16, BASE_DEC, NULL, 0x0,
 826                         "", HFILL }}
 827         };
 828         static gint *ett[] = {
 829                 &ett_radius,
 830                 &ett_radius_avp,
 831         };
 832
 833         proto_radius = proto_register_protocol("Radius Protocol", "RADIUS",
 834             "radius");
 835         proto_register_field_array(proto_radius, hf, array_length(hf));
 836         proto_register_subtree_array(ett, array_length(ett));
 837 }
 838
 839 void
 840 proto_reg_handoff_radius(void)
 841 {
 842         dissector_add("udp.port", UDP_PORT_RADIUS, dissect_radius,
 843             proto_radius);
 844         dissector_add("udp.port", UDP_PORT_RADIUS_NEW, dissect_radius,
 845             proto_radius);
 846         dissector_add("udp.port", UDP_PORT_RADACCT, dissect_radius,
 847             proto_radius);
 848         dissector_add("udp.port", UDP_PORT_RADACCT_NEW, dissect_radius,
 849             proto_radius);
 850 }