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997 lines
35 KiB
997 lines
35 KiB
/* |
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* Copyright (C) 2000 Alfredo Andres Omella. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. The names of the authors may not be used to endorse or promote |
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* products derived from this software without specific prior |
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* written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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/* \summary: Radius protocol printer */ |
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|
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/* |
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* Radius printer routines as specified on: |
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* |
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* RFC 2865: |
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* "Remote Authentication Dial In User Service (RADIUS)" |
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* |
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* RFC 2866: |
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* "RADIUS Accounting" |
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* |
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* RFC 2867: |
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* "RADIUS Accounting Modifications for Tunnel Protocol Support" |
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* |
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* RFC 2868: |
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* "RADIUS Attributes for Tunnel Protocol Support" |
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* |
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* RFC 2869: |
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* "RADIUS Extensions" |
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* |
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* RFC 3580: |
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* "IEEE 802.1X Remote Authentication Dial In User Service (RADIUS)" |
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* "Usage Guidelines" |
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* |
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* RFC 4675: |
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* "RADIUS Attributes for Virtual LAN and Priority Support" |
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* |
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* RFC 5176: |
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* "Dynamic Authorization Extensions to RADIUS" |
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* |
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* Alfredo Andres Omella (aandres@s21sec.com) v0.1 2000/09/15 |
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* |
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* TODO: Among other things to print ok MacIntosh and Vendor values |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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|
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#include <netdissect-stdinc.h> |
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|
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#include <string.h> |
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|
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#include "netdissect.h" |
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#include "addrtoname.h" |
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#include "extract.h" |
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#include "oui.h" |
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|
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static const char tstr[] = " [|radius]"; |
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|
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#define TAM_SIZE(x) (sizeof(x)/sizeof(x[0]) ) |
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|
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#define PRINT_HEX(bytes_len, ptr_data) \ |
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while(bytes_len) \ |
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{ \ |
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ND_PRINT((ndo, "%02X", *ptr_data )); \ |
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ptr_data++; \ |
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bytes_len--; \ |
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} |
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/* Radius packet codes */ |
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#define RADCMD_ACCESS_REQ 1 /* Access-Request */ |
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#define RADCMD_ACCESS_ACC 2 /* Access-Accept */ |
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#define RADCMD_ACCESS_REJ 3 /* Access-Reject */ |
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#define RADCMD_ACCOUN_REQ 4 /* Accounting-Request */ |
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#define RADCMD_ACCOUN_RES 5 /* Accounting-Response */ |
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#define RADCMD_ACCESS_CHA 11 /* Access-Challenge */ |
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#define RADCMD_STATUS_SER 12 /* Status-Server */ |
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#define RADCMD_STATUS_CLI 13 /* Status-Client */ |
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#define RADCMD_DISCON_REQ 40 /* Disconnect-Request */ |
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#define RADCMD_DISCON_ACK 41 /* Disconnect-ACK */ |
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#define RADCMD_DISCON_NAK 42 /* Disconnect-NAK */ |
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#define RADCMD_COA_REQ 43 /* CoA-Request */ |
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#define RADCMD_COA_ACK 44 /* CoA-ACK */ |
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#define RADCMD_COA_NAK 45 /* CoA-NAK */ |
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#define RADCMD_RESERVED 255 /* Reserved */ |
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static const struct tok radius_command_values[] = { |
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{ RADCMD_ACCESS_REQ, "Access-Request" }, |
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{ RADCMD_ACCESS_ACC, "Access-Accept" }, |
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{ RADCMD_ACCESS_REJ, "Access-Reject" }, |
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{ RADCMD_ACCOUN_REQ, "Accounting-Request" }, |
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{ RADCMD_ACCOUN_RES, "Accounting-Response" }, |
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{ RADCMD_ACCESS_CHA, "Access-Challenge" }, |
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{ RADCMD_STATUS_SER, "Status-Server" }, |
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{ RADCMD_STATUS_CLI, "Status-Client" }, |
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{ RADCMD_DISCON_REQ, "Disconnect-Request" }, |
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{ RADCMD_DISCON_ACK, "Disconnect-ACK" }, |
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{ RADCMD_DISCON_NAK, "Disconnect-NAK" }, |
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{ RADCMD_COA_REQ, "CoA-Request" }, |
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{ RADCMD_COA_ACK, "CoA-ACK" }, |
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{ RADCMD_COA_NAK, "CoA-NAK" }, |
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{ RADCMD_RESERVED, "Reserved" }, |
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{ 0, NULL} |
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}; |
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/********************************/ |
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/* Begin Radius Attribute types */ |
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/********************************/ |
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#define SERV_TYPE 6 |
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#define FRM_IPADDR 8 |
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#define LOG_IPHOST 14 |
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#define LOG_SERVICE 15 |
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#define FRM_IPX 23 |
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#define SESSION_TIMEOUT 27 |
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#define IDLE_TIMEOUT 28 |
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#define FRM_ATALK_LINK 37 |
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#define FRM_ATALK_NETWORK 38 |
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#define ACCT_DELAY 41 |
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#define ACCT_SESSION_TIME 46 |
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#define EGRESS_VLAN_ID 56 |
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#define EGRESS_VLAN_NAME 58 |
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#define TUNNEL_TYPE 64 |
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#define TUNNEL_MEDIUM 65 |
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#define TUNNEL_CLIENT_END 66 |
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#define TUNNEL_SERVER_END 67 |
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#define TUNNEL_PASS 69 |
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#define ARAP_PASS 70 |
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#define ARAP_FEATURES 71 |
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#define TUNNEL_PRIV_GROUP 81 |
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#define TUNNEL_ASSIGN_ID 82 |
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#define TUNNEL_PREFERENCE 83 |
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#define ARAP_CHALLENGE_RESP 84 |
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#define ACCT_INT_INTERVAL 85 |
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#define TUNNEL_CLIENT_AUTH 90 |
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#define TUNNEL_SERVER_AUTH 91 |
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/********************************/ |
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/* End Radius Attribute types */ |
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/********************************/ |
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#define RFC4675_TAGGED 0x31 |
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#define RFC4675_UNTAGGED 0x32 |
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static const struct tok rfc4675_tagged[] = { |
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{ RFC4675_TAGGED, "Tagged" }, |
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{ RFC4675_UNTAGGED, "Untagged" }, |
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{ 0, NULL} |
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}; |
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static void print_attr_string(netdissect_options *, register const u_char *, u_int, u_short ); |
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static void print_attr_num(netdissect_options *, register const u_char *, u_int, u_short ); |
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static void print_vendor_attr(netdissect_options *, register const u_char *, u_int, u_short ); |
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static void print_attr_address(netdissect_options *, register const u_char *, u_int, u_short); |
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static void print_attr_time(netdissect_options *, register const u_char *, u_int, u_short); |
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static void print_attr_strange(netdissect_options *, register const u_char *, u_int, u_short); |
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struct radius_hdr { uint8_t code; /* Radius packet code */ |
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uint8_t id; /* Radius packet id */ |
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uint16_t len; /* Radius total length */ |
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uint8_t auth[16]; /* Authenticator */ |
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}; |
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#define MIN_RADIUS_LEN 20 |
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struct radius_attr { uint8_t type; /* Attribute type */ |
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uint8_t len; /* Attribute length */ |
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}; |
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/* Service-Type Attribute standard values */ |
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static const char *serv_type[]={ NULL, |
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"Login", |
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"Framed", |
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"Callback Login", |
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"Callback Framed", |
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"Outbound", |
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"Administrative", |
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"NAS Prompt", |
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"Authenticate Only", |
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"Callback NAS Prompt", |
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"Call Check", |
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"Callback Administrative", |
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}; |
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/* Framed-Protocol Attribute standard values */ |
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static const char *frm_proto[]={ NULL, |
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"PPP", |
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"SLIP", |
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"ARAP", |
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"Gandalf proprietary", |
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"Xylogics IPX/SLIP", |
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"X.75 Synchronous", |
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}; |
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/* Framed-Routing Attribute standard values */ |
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static const char *frm_routing[]={ "None", |
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"Send", |
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"Listen", |
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"Send&Listen", |
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}; |
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/* Framed-Compression Attribute standard values */ |
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static const char *frm_comp[]={ "None", |
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"VJ TCP/IP", |
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"IPX", |
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"Stac-LZS", |
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}; |
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/* Login-Service Attribute standard values */ |
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static const char *login_serv[]={ "Telnet", |
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"Rlogin", |
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"TCP Clear", |
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"PortMaster(proprietary)", |
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"LAT", |
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"X.25-PAD", |
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"X.25-T3POS", |
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"Unassigned", |
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"TCP Clear Quiet", |
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}; |
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/* Termination-Action Attribute standard values */ |
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static const char *term_action[]={ "Default", |
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"RADIUS-Request", |
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}; |
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/* Ingress-Filters Attribute standard values */ |
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static const char *ingress_filters[]={ NULL, |
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"Enabled", |
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"Disabled", |
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}; |
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/* NAS-Port-Type Attribute standard values */ |
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static const char *nas_port_type[]={ "Async", |
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"Sync", |
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"ISDN Sync", |
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"ISDN Async V.120", |
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"ISDN Async V.110", |
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"Virtual", |
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"PIAFS", |
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"HDLC Clear Channel", |
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"X.25", |
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"X.75", |
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"G.3 Fax", |
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"SDSL", |
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"ADSL-CAP", |
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"ADSL-DMT", |
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"ISDN-DSL", |
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"Ethernet", |
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"xDSL", |
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"Cable", |
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"Wireless - Other", |
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"Wireless - IEEE 802.11", |
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}; |
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/* Acct-Status-Type Accounting Attribute standard values */ |
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static const char *acct_status[]={ NULL, |
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"Start", |
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"Stop", |
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"Interim-Update", |
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"Unassigned", |
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"Unassigned", |
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"Unassigned", |
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"Accounting-On", |
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"Accounting-Off", |
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"Tunnel-Start", |
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"Tunnel-Stop", |
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"Tunnel-Reject", |
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"Tunnel-Link-Start", |
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"Tunnel-Link-Stop", |
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"Tunnel-Link-Reject", |
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"Failed", |
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}; |
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/* Acct-Authentic Accounting Attribute standard values */ |
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static const char *acct_auth[]={ NULL, |
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"RADIUS", |
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"Local", |
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"Remote", |
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}; |
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/* Acct-Terminate-Cause Accounting Attribute standard values */ |
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static const char *acct_term[]={ NULL, |
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"User Request", |
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"Lost Carrier", |
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"Lost Service", |
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"Idle Timeout", |
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"Session Timeout", |
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"Admin Reset", |
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"Admin Reboot", |
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"Port Error", |
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"NAS Error", |
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"NAS Request", |
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"NAS Reboot", |
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"Port Unneeded", |
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"Port Preempted", |
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"Port Suspended", |
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"Service Unavailable", |
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"Callback", |
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"User Error", |
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"Host Request", |
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}; |
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/* Tunnel-Type Attribute standard values */ |
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static const char *tunnel_type[]={ NULL, |
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"PPTP", |
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"L2F", |
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"L2TP", |
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"ATMP", |
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"VTP", |
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"AH", |
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"IP-IP", |
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"MIN-IP-IP", |
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"ESP", |
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"GRE", |
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"DVS", |
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"IP-in-IP Tunneling", |
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"VLAN", |
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}; |
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/* Tunnel-Medium-Type Attribute standard values */ |
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static const char *tunnel_medium[]={ NULL, |
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"IPv4", |
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"IPv6", |
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"NSAP", |
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"HDLC", |
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"BBN 1822", |
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"802", |
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"E.163", |
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"E.164", |
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"F.69", |
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"X.121", |
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"IPX", |
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"Appletalk", |
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"Decnet IV", |
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"Banyan Vines", |
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"E.164 with NSAP subaddress", |
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}; |
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/* ARAP-Zone-Access Attribute standard values */ |
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static const char *arap_zone[]={ NULL, |
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"Only access to dfl zone", |
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"Use zone filter inc.", |
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"Not used", |
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"Use zone filter exc.", |
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}; |
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static const char *prompt[]={ "No Echo", |
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"Echo", |
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}; |
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static struct attrtype { |
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const char *name; /* Attribute name */ |
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const char **subtypes; /* Standard Values (if any) */ |
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u_char siz_subtypes; /* Size of total standard values */ |
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u_char first_subtype; /* First standard value is 0 or 1 */ |
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void (*print_func)(netdissect_options *, register const u_char *, u_int, u_short); |
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} attr_type[]= |
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{ |
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{ NULL, NULL, 0, 0, NULL }, |
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{ "User-Name", NULL, 0, 0, print_attr_string }, |
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{ "User-Password", NULL, 0, 0, NULL }, |
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{ "CHAP-Password", NULL, 0, 0, NULL }, |
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{ "NAS-IP-Address", NULL, 0, 0, print_attr_address }, |
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{ "NAS-Port", NULL, 0, 0, print_attr_num }, |
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{ "Service-Type", serv_type, TAM_SIZE(serv_type)-1, 1, print_attr_num }, |
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{ "Framed-Protocol", frm_proto, TAM_SIZE(frm_proto)-1, 1, print_attr_num }, |
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{ "Framed-IP-Address", NULL, 0, 0, print_attr_address }, |
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{ "Framed-IP-Netmask", NULL, 0, 0, print_attr_address }, |
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{ "Framed-Routing", frm_routing, TAM_SIZE(frm_routing), 0, print_attr_num }, |
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{ "Filter-Id", NULL, 0, 0, print_attr_string }, |
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{ "Framed-MTU", NULL, 0, 0, print_attr_num }, |
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{ "Framed-Compression", frm_comp, TAM_SIZE(frm_comp), 0, print_attr_num }, |
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{ "Login-IP-Host", NULL, 0, 0, print_attr_address }, |
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{ "Login-Service", login_serv, TAM_SIZE(login_serv), 0, print_attr_num }, |
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{ "Login-TCP-Port", NULL, 0, 0, print_attr_num }, |
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{ "Unassigned", NULL, 0, 0, NULL }, /*17*/ |
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{ "Reply-Message", NULL, 0, 0, print_attr_string }, |
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{ "Callback-Number", NULL, 0, 0, print_attr_string }, |
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{ "Callback-Id", NULL, 0, 0, print_attr_string }, |
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{ "Unassigned", NULL, 0, 0, NULL }, /*21*/ |
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{ "Framed-Route", NULL, 0, 0, print_attr_string }, |
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{ "Framed-IPX-Network", NULL, 0, 0, print_attr_num }, |
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{ "State", NULL, 0, 0, print_attr_string }, |
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{ "Class", NULL, 0, 0, print_attr_string }, |
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{ "Vendor-Specific", NULL, 0, 0, print_vendor_attr }, |
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{ "Session-Timeout", NULL, 0, 0, print_attr_num }, |
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{ "Idle-Timeout", NULL, 0, 0, print_attr_num }, |
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{ "Termination-Action", term_action, TAM_SIZE(term_action), 0, print_attr_num }, |
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{ "Called-Station-Id", NULL, 0, 0, print_attr_string }, |
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{ "Calling-Station-Id", NULL, 0, 0, print_attr_string }, |
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{ "NAS-Identifier", NULL, 0, 0, print_attr_string }, |
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{ "Proxy-State", NULL, 0, 0, print_attr_string }, |
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{ "Login-LAT-Service", NULL, 0, 0, print_attr_string }, |
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{ "Login-LAT-Node", NULL, 0, 0, print_attr_string }, |
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{ "Login-LAT-Group", NULL, 0, 0, print_attr_string }, |
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{ "Framed-AppleTalk-Link", NULL, 0, 0, print_attr_num }, |
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{ "Framed-AppleTalk-Network", NULL, 0, 0, print_attr_num }, |
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{ "Framed-AppleTalk-Zone", NULL, 0, 0, print_attr_string }, |
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{ "Acct-Status-Type", acct_status, TAM_SIZE(acct_status)-1, 1, print_attr_num }, |
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{ "Acct-Delay-Time", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Input-Octets", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Output-Octets", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Session-Id", NULL, 0, 0, print_attr_string }, |
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{ "Acct-Authentic", acct_auth, TAM_SIZE(acct_auth)-1, 1, print_attr_num }, |
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{ "Acct-Session-Time", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Input-Packets", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Output-Packets", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Terminate-Cause", acct_term, TAM_SIZE(acct_term)-1, 1, print_attr_num }, |
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{ "Acct-Multi-Session-Id", NULL, 0, 0, print_attr_string }, |
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{ "Acct-Link-Count", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Input-Gigawords", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Output-Gigawords", NULL, 0, 0, print_attr_num }, |
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{ "Unassigned", NULL, 0, 0, NULL }, /*54*/ |
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{ "Event-Timestamp", NULL, 0, 0, print_attr_time }, |
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{ "Egress-VLANID", NULL, 0, 0, print_attr_num }, |
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{ "Ingress-Filters", ingress_filters, TAM_SIZE(ingress_filters)-1, 1, print_attr_num }, |
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{ "Egress-VLAN-Name", NULL, 0, 0, print_attr_string }, |
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{ "User-Priority-Table", NULL, 0, 0, NULL }, |
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{ "CHAP-Challenge", NULL, 0, 0, print_attr_string }, |
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{ "NAS-Port-Type", nas_port_type, TAM_SIZE(nas_port_type), 0, print_attr_num }, |
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{ "Port-Limit", NULL, 0, 0, print_attr_num }, |
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{ "Login-LAT-Port", NULL, 0, 0, print_attr_string }, /*63*/ |
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{ "Tunnel-Type", tunnel_type, TAM_SIZE(tunnel_type)-1, 1, print_attr_num }, |
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{ "Tunnel-Medium-Type", tunnel_medium, TAM_SIZE(tunnel_medium)-1, 1, print_attr_num }, |
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{ "Tunnel-Client-Endpoint", NULL, 0, 0, print_attr_string }, |
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{ "Tunnel-Server-Endpoint", NULL, 0, 0, print_attr_string }, |
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{ "Acct-Tunnel-Connection", NULL, 0, 0, print_attr_string }, |
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{ "Tunnel-Password", NULL, 0, 0, print_attr_string }, |
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{ "ARAP-Password", NULL, 0, 0, print_attr_strange }, |
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{ "ARAP-Features", NULL, 0, 0, print_attr_strange }, |
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{ "ARAP-Zone-Access", arap_zone, TAM_SIZE(arap_zone)-1, 1, print_attr_num }, /*72*/ |
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{ "ARAP-Security", NULL, 0, 0, print_attr_string }, |
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{ "ARAP-Security-Data", NULL, 0, 0, print_attr_string }, |
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{ "Password-Retry", NULL, 0, 0, print_attr_num }, |
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{ "Prompt", prompt, TAM_SIZE(prompt), 0, print_attr_num }, |
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{ "Connect-Info", NULL, 0, 0, print_attr_string }, |
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{ "Configuration-Token", NULL, 0, 0, print_attr_string }, |
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{ "EAP-Message", NULL, 0, 0, print_attr_string }, |
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{ "Message-Authenticator", NULL, 0, 0, print_attr_string }, /*80*/ |
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{ "Tunnel-Private-Group-ID", NULL, 0, 0, print_attr_string }, |
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{ "Tunnel-Assignment-ID", NULL, 0, 0, print_attr_string }, |
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{ "Tunnel-Preference", NULL, 0, 0, print_attr_num }, |
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{ "ARAP-Challenge-Response", NULL, 0, 0, print_attr_strange }, |
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{ "Acct-Interim-Interval", NULL, 0, 0, print_attr_num }, |
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{ "Acct-Tunnel-Packets-Lost", NULL, 0, 0, print_attr_num }, /*86*/ |
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{ "NAS-Port-Id", NULL, 0, 0, print_attr_string }, |
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{ "Framed-Pool", NULL, 0, 0, print_attr_string }, |
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{ "CUI", NULL, 0, 0, print_attr_string }, |
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{ "Tunnel-Client-Auth-ID", NULL, 0, 0, print_attr_string }, |
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{ "Tunnel-Server-Auth-ID", NULL, 0, 0, print_attr_string }, |
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{ "Unassigned", NULL, 0, 0, NULL }, /*92*/ |
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{ "Unassigned", NULL, 0, 0, NULL } /*93*/ |
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}; |
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|
|
|
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/*****************************/ |
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/* Print an attribute string */ |
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/* value pointed by 'data' */ |
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/* and 'length' size. */ |
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/*****************************/ |
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/* Returns nothing. */ |
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/*****************************/ |
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static void |
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print_attr_string(netdissect_options *ndo, |
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register const u_char *data, u_int length, u_short attr_code) |
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{ |
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register u_int i; |
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|
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ND_TCHECK2(data[0],length); |
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|
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switch(attr_code) |
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{ |
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case TUNNEL_PASS: |
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if (length < 3) |
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{ |
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ND_PRINT((ndo, "%s", tstr)); |
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return; |
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} |
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if (*data && (*data <=0x1F) ) |
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ND_PRINT((ndo, "Tag[%u] ", *data)); |
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else |
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ND_PRINT((ndo, "Tag[Unused] ")); |
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data++; |
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length--; |
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ND_PRINT((ndo, "Salt %u ", EXTRACT_16BITS(data))); |
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data+=2; |
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length-=2; |
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break; |
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case TUNNEL_CLIENT_END: |
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case TUNNEL_SERVER_END: |
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case TUNNEL_PRIV_GROUP: |
|
case TUNNEL_ASSIGN_ID: |
|
case TUNNEL_CLIENT_AUTH: |
|
case TUNNEL_SERVER_AUTH: |
|
if (*data <= 0x1F) |
|
{ |
|
if (length < 1) |
|
{ |
|
ND_PRINT((ndo, "%s", tstr)); |
|
return; |
|
} |
|
if (*data) |
|
ND_PRINT((ndo, "Tag[%u] ", *data)); |
|
else |
|
ND_PRINT((ndo, "Tag[Unused] ")); |
|
data++; |
|
length--; |
|
} |
|
break; |
|
case EGRESS_VLAN_NAME: |
|
ND_PRINT((ndo, "%s (0x%02x) ", |
|
tok2str(rfc4675_tagged,"Unknown tag",*data), |
|
*data)); |
|
data++; |
|
length--; |
|
break; |
|
} |
|
|
|
for (i=0; *data && i < length ; i++, data++) |
|
ND_PRINT((ndo, "%c", (*data < 32 || *data > 126) ? '.' : *data)); |
|
|
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
/* |
|
* print vendor specific attributes |
|
*/ |
|
static void |
|
print_vendor_attr(netdissect_options *ndo, |
|
register const u_char *data, u_int length, u_short attr_code _U_) |
|
{ |
|
u_int idx; |
|
u_int vendor_id; |
|
u_int vendor_type; |
|
u_int vendor_length; |
|
|
|
if (length < 4) |
|
goto trunc; |
|
ND_TCHECK2(*data, 4); |
|
vendor_id = EXTRACT_32BITS(data); |
|
data+=4; |
|
length-=4; |
|
|
|
ND_PRINT((ndo, "Vendor: %s (%u)", |
|
tok2str(smi_values,"Unknown",vendor_id), |
|
vendor_id)); |
|
|
|
while (length >= 2) { |
|
ND_TCHECK2(*data, 2); |
|
|
|
vendor_type = *(data); |
|
vendor_length = *(data+1); |
|
|
|
if (vendor_length < 2) |
|
{ |
|
ND_PRINT((ndo, "\n\t Vendor Attribute: %u, Length: %u (bogus, must be >= 2)", |
|
vendor_type, |
|
vendor_length)); |
|
return; |
|
} |
|
if (vendor_length > length) |
|
{ |
|
ND_PRINT((ndo, "\n\t Vendor Attribute: %u, Length: %u (bogus, goes past end of vendor-specific attribute)", |
|
vendor_type, |
|
vendor_length)); |
|
return; |
|
} |
|
data+=2; |
|
vendor_length-=2; |
|
length-=2; |
|
ND_TCHECK2(*data, vendor_length); |
|
|
|
ND_PRINT((ndo, "\n\t Vendor Attribute: %u, Length: %u, Value: ", |
|
vendor_type, |
|
vendor_length)); |
|
for (idx = 0; idx < vendor_length ; idx++, data++) |
|
ND_PRINT((ndo, "%c", (*data < 32 || *data > 126) ? '.' : *data)); |
|
length-=vendor_length; |
|
} |
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
/******************************/ |
|
/* Print an attribute numeric */ |
|
/* value pointed by 'data' */ |
|
/* and 'length' size. */ |
|
/******************************/ |
|
/* Returns nothing. */ |
|
/******************************/ |
|
static void |
|
print_attr_num(netdissect_options *ndo, |
|
register const u_char *data, u_int length, u_short attr_code) |
|
{ |
|
uint32_t timeout; |
|
|
|
if (length != 4) |
|
{ |
|
ND_PRINT((ndo, "ERROR: length %u != 4", length)); |
|
return; |
|
} |
|
|
|
ND_TCHECK2(data[0],4); |
|
/* This attribute has standard values */ |
|
if (attr_type[attr_code].siz_subtypes) |
|
{ |
|
static const char **table; |
|
uint32_t data_value; |
|
table = attr_type[attr_code].subtypes; |
|
|
|
if ( (attr_code == TUNNEL_TYPE) || (attr_code == TUNNEL_MEDIUM) ) |
|
{ |
|
if (!*data) |
|
ND_PRINT((ndo, "Tag[Unused] ")); |
|
else |
|
ND_PRINT((ndo, "Tag[%d] ", *data)); |
|
data++; |
|
data_value = EXTRACT_24BITS(data); |
|
} |
|
else |
|
{ |
|
data_value = EXTRACT_32BITS(data); |
|
} |
|
if ( data_value <= (uint32_t)(attr_type[attr_code].siz_subtypes - 1 + |
|
attr_type[attr_code].first_subtype) && |
|
data_value >= attr_type[attr_code].first_subtype ) |
|
ND_PRINT((ndo, "%s", table[data_value])); |
|
else |
|
ND_PRINT((ndo, "#%u", data_value)); |
|
} |
|
else |
|
{ |
|
switch(attr_code) /* Be aware of special cases... */ |
|
{ |
|
case FRM_IPX: |
|
if (EXTRACT_32BITS( data) == 0xFFFFFFFE ) |
|
ND_PRINT((ndo, "NAS Select")); |
|
else |
|
ND_PRINT((ndo, "%d", EXTRACT_32BITS(data))); |
|
break; |
|
|
|
case SESSION_TIMEOUT: |
|
case IDLE_TIMEOUT: |
|
case ACCT_DELAY: |
|
case ACCT_SESSION_TIME: |
|
case ACCT_INT_INTERVAL: |
|
timeout = EXTRACT_32BITS( data); |
|
if ( timeout < 60 ) |
|
ND_PRINT((ndo, "%02d secs", timeout)); |
|
else |
|
{ |
|
if ( timeout < 3600 ) |
|
ND_PRINT((ndo, "%02d:%02d min", |
|
timeout / 60, timeout % 60)); |
|
else |
|
ND_PRINT((ndo, "%02d:%02d:%02d hours", |
|
timeout / 3600, (timeout % 3600) / 60, |
|
timeout % 60)); |
|
} |
|
break; |
|
|
|
case FRM_ATALK_LINK: |
|
if (EXTRACT_32BITS(data) ) |
|
ND_PRINT((ndo, "%d", EXTRACT_32BITS(data))); |
|
else |
|
ND_PRINT((ndo, "Unnumbered")); |
|
break; |
|
|
|
case FRM_ATALK_NETWORK: |
|
if (EXTRACT_32BITS(data) ) |
|
ND_PRINT((ndo, "%d", EXTRACT_32BITS(data))); |
|
else |
|
ND_PRINT((ndo, "NAS assigned")); |
|
break; |
|
|
|
case TUNNEL_PREFERENCE: |
|
if (*data) |
|
ND_PRINT((ndo, "Tag[%d] ", *data)); |
|
else |
|
ND_PRINT((ndo, "Tag[Unused] ")); |
|
data++; |
|
ND_PRINT((ndo, "%d", EXTRACT_24BITS(data))); |
|
break; |
|
|
|
case EGRESS_VLAN_ID: |
|
ND_PRINT((ndo, "%s (0x%02x) ", |
|
tok2str(rfc4675_tagged,"Unknown tag",*data), |
|
*data)); |
|
data++; |
|
ND_PRINT((ndo, "%d", EXTRACT_24BITS(data))); |
|
break; |
|
|
|
default: |
|
ND_PRINT((ndo, "%d", EXTRACT_32BITS(data))); |
|
break; |
|
|
|
} /* switch */ |
|
|
|
} /* if-else */ |
|
|
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
/*****************************/ |
|
/* Print an attribute IPv4 */ |
|
/* address value pointed by */ |
|
/* 'data' and 'length' size. */ |
|
/*****************************/ |
|
/* Returns nothing. */ |
|
/*****************************/ |
|
static void |
|
print_attr_address(netdissect_options *ndo, |
|
register const u_char *data, u_int length, u_short attr_code) |
|
{ |
|
if (length != 4) |
|
{ |
|
ND_PRINT((ndo, "ERROR: length %u != 4", length)); |
|
return; |
|
} |
|
|
|
ND_TCHECK2(data[0],4); |
|
|
|
switch(attr_code) |
|
{ |
|
case FRM_IPADDR: |
|
case LOG_IPHOST: |
|
if (EXTRACT_32BITS(data) == 0xFFFFFFFF ) |
|
ND_PRINT((ndo, "User Selected")); |
|
else |
|
if (EXTRACT_32BITS(data) == 0xFFFFFFFE ) |
|
ND_PRINT((ndo, "NAS Select")); |
|
else |
|
ND_PRINT((ndo, "%s",ipaddr_string(ndo, data))); |
|
break; |
|
|
|
default: |
|
ND_PRINT((ndo, "%s", ipaddr_string(ndo, data))); |
|
break; |
|
} |
|
|
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
/*************************************/ |
|
/* Print an attribute of 'secs since */ |
|
/* January 1, 1970 00:00 UTC' value */ |
|
/* pointed by 'data' and 'length' */ |
|
/* size. */ |
|
/*************************************/ |
|
/* Returns nothing. */ |
|
/*************************************/ |
|
static void |
|
print_attr_time(netdissect_options *ndo, |
|
register const u_char *data, u_int length, u_short attr_code _U_) |
|
{ |
|
time_t attr_time; |
|
char string[26]; |
|
|
|
if (length != 4) |
|
{ |
|
ND_PRINT((ndo, "ERROR: length %u != 4", length)); |
|
return; |
|
} |
|
|
|
ND_TCHECK2(data[0],4); |
|
|
|
attr_time = EXTRACT_32BITS(data); |
|
strlcpy(string, ctime(&attr_time), sizeof(string)); |
|
/* Get rid of the newline */ |
|
string[24] = '\0'; |
|
ND_PRINT((ndo, "%.24s", string)); |
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
/***********************************/ |
|
/* Print an attribute of 'strange' */ |
|
/* data format pointed by 'data' */ |
|
/* and 'length' size. */ |
|
/***********************************/ |
|
/* Returns nothing. */ |
|
/***********************************/ |
|
static void |
|
print_attr_strange(netdissect_options *ndo, |
|
register const u_char *data, u_int length, u_short attr_code) |
|
{ |
|
u_short len_data; |
|
|
|
switch(attr_code) |
|
{ |
|
case ARAP_PASS: |
|
if (length != 16) |
|
{ |
|
ND_PRINT((ndo, "ERROR: length %u != 16", length)); |
|
return; |
|
} |
|
ND_PRINT((ndo, "User_challenge (")); |
|
ND_TCHECK2(data[0],8); |
|
len_data = 8; |
|
PRINT_HEX(len_data, data); |
|
ND_PRINT((ndo, ") User_resp(")); |
|
ND_TCHECK2(data[0],8); |
|
len_data = 8; |
|
PRINT_HEX(len_data, data); |
|
ND_PRINT((ndo, ")")); |
|
break; |
|
|
|
case ARAP_FEATURES: |
|
if (length != 14) |
|
{ |
|
ND_PRINT((ndo, "ERROR: length %u != 14", length)); |
|
return; |
|
} |
|
ND_TCHECK2(data[0],1); |
|
if (*data) |
|
ND_PRINT((ndo, "User can change password")); |
|
else |
|
ND_PRINT((ndo, "User cannot change password")); |
|
data++; |
|
ND_TCHECK2(data[0],1); |
|
ND_PRINT((ndo, ", Min password length: %d", *data)); |
|
data++; |
|
ND_PRINT((ndo, ", created at: ")); |
|
ND_TCHECK2(data[0],4); |
|
len_data = 4; |
|
PRINT_HEX(len_data, data); |
|
ND_PRINT((ndo, ", expires in: ")); |
|
ND_TCHECK2(data[0],4); |
|
len_data = 4; |
|
PRINT_HEX(len_data, data); |
|
ND_PRINT((ndo, ", Current Time: ")); |
|
ND_TCHECK2(data[0],4); |
|
len_data = 4; |
|
PRINT_HEX(len_data, data); |
|
break; |
|
|
|
case ARAP_CHALLENGE_RESP: |
|
if (length < 8) |
|
{ |
|
ND_PRINT((ndo, "ERROR: length %u != 8", length)); |
|
return; |
|
} |
|
ND_TCHECK2(data[0],8); |
|
len_data = 8; |
|
PRINT_HEX(len_data, data); |
|
break; |
|
} |
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
static void |
|
radius_attrs_print(netdissect_options *ndo, |
|
register const u_char *attr, u_int length) |
|
{ |
|
register const struct radius_attr *rad_attr = (const struct radius_attr *)attr; |
|
const char *attr_string; |
|
|
|
while (length > 0) |
|
{ |
|
if (length < 2) |
|
goto trunc; |
|
ND_TCHECK(*rad_attr); |
|
|
|
if (rad_attr->type > 0 && rad_attr->type < TAM_SIZE(attr_type)) |
|
attr_string = attr_type[rad_attr->type].name; |
|
else |
|
attr_string = "Unknown"; |
|
if (rad_attr->len < 2) |
|
{ |
|
ND_PRINT((ndo, "\n\t %s Attribute (%u), length: %u (bogus, must be >= 2)", |
|
attr_string, |
|
rad_attr->type, |
|
rad_attr->len)); |
|
return; |
|
} |
|
if (rad_attr->len > length) |
|
{ |
|
ND_PRINT((ndo, "\n\t %s Attribute (%u), length: %u (bogus, goes past end of packet)", |
|
attr_string, |
|
rad_attr->type, |
|
rad_attr->len)); |
|
return; |
|
} |
|
ND_PRINT((ndo, "\n\t %s Attribute (%u), length: %u, Value: ", |
|
attr_string, |
|
rad_attr->type, |
|
rad_attr->len)); |
|
|
|
if (rad_attr->type < TAM_SIZE(attr_type)) |
|
{ |
|
if (rad_attr->len > 2) |
|
{ |
|
if ( attr_type[rad_attr->type].print_func ) |
|
(*attr_type[rad_attr->type].print_func)( |
|
ndo, ((const u_char *)(rad_attr+1)), |
|
rad_attr->len - 2, rad_attr->type); |
|
} |
|
} |
|
/* do we also want to see a hex dump ? */ |
|
if (ndo->ndo_vflag> 1) |
|
print_unknown_data(ndo, (const u_char *)rad_attr+2, "\n\t ", (rad_attr->len)-2); |
|
|
|
length-=(rad_attr->len); |
|
rad_attr = (const struct radius_attr *)( ((const char *)(rad_attr))+rad_attr->len); |
|
} |
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
} |
|
|
|
void |
|
radius_print(netdissect_options *ndo, |
|
const u_char *dat, u_int length) |
|
{ |
|
register const struct radius_hdr *rad; |
|
u_int len, auth_idx; |
|
|
|
ND_TCHECK2(*dat, MIN_RADIUS_LEN); |
|
rad = (const struct radius_hdr *)dat; |
|
len = EXTRACT_16BITS(&rad->len); |
|
|
|
if (len < MIN_RADIUS_LEN) |
|
{ |
|
ND_PRINT((ndo, "%s", tstr)); |
|
return; |
|
} |
|
|
|
if (len > length) |
|
len = length; |
|
|
|
if (ndo->ndo_vflag < 1) { |
|
ND_PRINT((ndo, "RADIUS, %s (%u), id: 0x%02x length: %u", |
|
tok2str(radius_command_values,"Unknown Command",rad->code), |
|
rad->code, |
|
rad->id, |
|
len)); |
|
return; |
|
} |
|
else { |
|
ND_PRINT((ndo, "RADIUS, length: %u\n\t%s (%u), id: 0x%02x, Authenticator: ", |
|
len, |
|
tok2str(radius_command_values,"Unknown Command",rad->code), |
|
rad->code, |
|
rad->id)); |
|
|
|
for(auth_idx=0; auth_idx < 16; auth_idx++) |
|
ND_PRINT((ndo, "%02x", rad->auth[auth_idx])); |
|
} |
|
|
|
if (len > MIN_RADIUS_LEN) |
|
radius_attrs_print(ndo, dat + MIN_RADIUS_LEN, len - MIN_RADIUS_LEN); |
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "%s", tstr)); |
|
}
|
|
|