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+++ b/print-radius.c
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+/*
+ * Copyright (C) 2000 Alfredo Andres Omella. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. The names of the authors may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/* \summary: Radius protocol printer */
+
+/*
+ * Radius printer routines as specified on:
+ *
+ * RFC 2865:
+ * "Remote Authentication Dial In User Service (RADIUS)"
+ *
+ * RFC 2866:
+ * "RADIUS Accounting"
+ *
+ * RFC 2867:
+ * "RADIUS Accounting Modifications for Tunnel Protocol Support"
+ *
+ * RFC 2868:
+ * "RADIUS Attributes for Tunnel Protocol Support"
+ *
+ * RFC 2869:
+ * "RADIUS Extensions"
+ *
+ * RFC 3580:
+ * "IEEE 802.1X Remote Authentication Dial In User Service (RADIUS)"
+ * "Usage Guidelines"
+ *
+ * RFC 4675:
+ * "RADIUS Attributes for Virtual LAN and Priority Support"
+ *
+ * RFC 5176:
+ * "Dynamic Authorization Extensions to RADIUS"
+ *
+ * Alfredo Andres Omella (aandres@s21sec.com) v0.1 2000/09/15
+ *
+ * TODO: Among other things to print ok MacIntosh and Vendor values
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netdissect-stdinc.h>
+
+#include <string.h>
+
+#include "netdissect.h"
+#include "addrtoname.h"
+#include "extract.h"
+#include "oui.h"
+
+static const char tstr[] = " [|radius]";
+
+#define TAM_SIZE(x) (sizeof(x)/sizeof(x[0]) )
+
+#define PRINT_HEX(bytes_len, ptr_data) \
+ while(bytes_len) \
+ { \
+ ND_PRINT((ndo, "%02X", *ptr_data )); \
+ ptr_data++; \
+ bytes_len--; \
+ }
+
+
+/* Radius packet codes */
+#define RADCMD_ACCESS_REQ 1 /* Access-Request */
+#define RADCMD_ACCESS_ACC 2 /* Access-Accept */
+#define RADCMD_ACCESS_REJ 3 /* Access-Reject */
+#define RADCMD_ACCOUN_REQ 4 /* Accounting-Request */
+#define RADCMD_ACCOUN_RES 5 /* Accounting-Response */
+#define RADCMD_ACCESS_CHA 11 /* Access-Challenge */
+#define RADCMD_STATUS_SER 12 /* Status-Server */
+#define RADCMD_STATUS_CLI 13 /* Status-Client */
+#define RADCMD_DISCON_REQ 40 /* Disconnect-Request */
+#define RADCMD_DISCON_ACK 41 /* Disconnect-ACK */
+#define RADCMD_DISCON_NAK 42 /* Disconnect-NAK */
+#define RADCMD_COA_REQ 43 /* CoA-Request */
+#define RADCMD_COA_ACK 44 /* CoA-ACK */
+#define RADCMD_COA_NAK 45 /* CoA-NAK */
+#define RADCMD_RESERVED 255 /* Reserved */
+
+static const struct tok radius_command_values[] = {
+ { RADCMD_ACCESS_REQ, "Access-Request" },
+ { RADCMD_ACCESS_ACC, "Access-Accept" },
+ { RADCMD_ACCESS_REJ, "Access-Reject" },
+ { RADCMD_ACCOUN_REQ, "Accounting-Request" },
+ { RADCMD_ACCOUN_RES, "Accounting-Response" },
+ { RADCMD_ACCESS_CHA, "Access-Challenge" },
+ { RADCMD_STATUS_SER, "Status-Server" },
+ { RADCMD_STATUS_CLI, "Status-Client" },
+ { RADCMD_DISCON_REQ, "Disconnect-Request" },
+ { RADCMD_DISCON_ACK, "Disconnect-ACK" },
+ { RADCMD_DISCON_NAK, "Disconnect-NAK" },
+ { RADCMD_COA_REQ, "CoA-Request" },
+ { RADCMD_COA_ACK, "CoA-ACK" },
+ { RADCMD_COA_NAK, "CoA-NAK" },
+ { RADCMD_RESERVED, "Reserved" },
+ { 0, NULL}
+};
+
+/********************************/
+/* Begin Radius Attribute types */
+/********************************/
+#define SERV_TYPE 6
+#define FRM_IPADDR 8
+#define LOG_IPHOST 14
+#define LOG_SERVICE 15
+#define FRM_IPX 23
+#define SESSION_TIMEOUT 27
+#define IDLE_TIMEOUT 28
+#define FRM_ATALK_LINK 37
+#define FRM_ATALK_NETWORK 38
+
+#define ACCT_DELAY 41
+#define ACCT_SESSION_TIME 46
+
+#define EGRESS_VLAN_ID 56
+#define EGRESS_VLAN_NAME 58
+
+#define TUNNEL_TYPE 64
+#define TUNNEL_MEDIUM 65
+#define TUNNEL_CLIENT_END 66
+#define TUNNEL_SERVER_END 67
+#define TUNNEL_PASS 69
+
+#define ARAP_PASS 70
+#define ARAP_FEATURES 71
+
+#define TUNNEL_PRIV_GROUP 81
+#define TUNNEL_ASSIGN_ID 82
+#define TUNNEL_PREFERENCE 83
+
+#define ARAP_CHALLENGE_RESP 84
+#define ACCT_INT_INTERVAL 85
+
+#define TUNNEL_CLIENT_AUTH 90
+#define TUNNEL_SERVER_AUTH 91
+/********************************/
+/* End Radius Attribute types */
+/********************************/
+
+#define RFC4675_TAGGED 0x31
+#define RFC4675_UNTAGGED 0x32
+
+static const struct tok rfc4675_tagged[] = {
+ { RFC4675_TAGGED, "Tagged" },
+ { RFC4675_UNTAGGED, "Untagged" },
+ { 0, NULL}
+};
+
+
+static void print_attr_string(netdissect_options *, register const u_char *, u_int, u_short );
+static void print_attr_num(netdissect_options *, register const u_char *, u_int, u_short );
+static void print_vendor_attr(netdissect_options *, register const u_char *, u_int, u_short );
+static void print_attr_address(netdissect_options *, register const u_char *, u_int, u_short);
+static void print_attr_time(netdissect_options *, register const u_char *, u_int, u_short);
+static void print_attr_strange(netdissect_options *, register const u_char *, u_int, u_short);
+
+
+struct radius_hdr { uint8_t code; /* Radius packet code */
+ uint8_t id; /* Radius packet id */
+ uint16_t len; /* Radius total length */
+ uint8_t auth[16]; /* Authenticator */
+ };
+
+#define MIN_RADIUS_LEN 20
+
+struct radius_attr { uint8_t type; /* Attribute type */
+ uint8_t len; /* Attribute length */
+ };
+
+
+/* Service-Type Attribute standard values */
+static const char *serv_type[]={ NULL,
+ "Login",
+ "Framed",
+ "Callback Login",
+ "Callback Framed",
+ "Outbound",
+ "Administrative",
+ "NAS Prompt",
+ "Authenticate Only",
+ "Callback NAS Prompt",
+ "Call Check",
+ "Callback Administrative",
+ };
+
+/* Framed-Protocol Attribute standard values */
+static const char *frm_proto[]={ NULL,
+ "PPP",
+ "SLIP",
+ "ARAP",
+ "Gandalf proprietary",
+ "Xylogics IPX/SLIP",
+ "X.75 Synchronous",
+ };
+
+/* Framed-Routing Attribute standard values */
+static const char *frm_routing[]={ "None",
+ "Send",
+ "Listen",
+ "Send&Listen",
+ };
+
+/* Framed-Compression Attribute standard values */
+static const char *frm_comp[]={ "None",
+ "VJ TCP/IP",
+ "IPX",
+ "Stac-LZS",
+ };
+
+/* Login-Service Attribute standard values */
+static const char *login_serv[]={ "Telnet",
+ "Rlogin",
+ "TCP Clear",
+ "PortMaster(proprietary)",
+ "LAT",
+ "X.25-PAD",
+ "X.25-T3POS",
+ "Unassigned",
+ "TCP Clear Quiet",
+ };
+
+
+/* Termination-Action Attribute standard values */
+static const char *term_action[]={ "Default",
+ "RADIUS-Request",
+ };
+
+/* Ingress-Filters Attribute standard values */
+static const char *ingress_filters[]={ NULL,
+ "Enabled",
+ "Disabled",
+ };
+
+/* NAS-Port-Type Attribute standard values */
+static const char *nas_port_type[]={ "Async",
+ "Sync",
+ "ISDN Sync",
+ "ISDN Async V.120",
+ "ISDN Async V.110",
+ "Virtual",
+ "PIAFS",
+ "HDLC Clear Channel",
+ "X.25",
+ "X.75",
+ "G.3 Fax",
+ "SDSL",
+ "ADSL-CAP",
+ "ADSL-DMT",
+ "ISDN-DSL",
+ "Ethernet",
+ "xDSL",
+ "Cable",
+ "Wireless - Other",
+ "Wireless - IEEE 802.11",
+ };
+
+/* Acct-Status-Type Accounting Attribute standard values */
+static const char *acct_status[]={ NULL,
+ "Start",
+ "Stop",
+ "Interim-Update",
+ "Unassigned",
+ "Unassigned",
+ "Unassigned",
+ "Accounting-On",
+ "Accounting-Off",
+ "Tunnel-Start",
+ "Tunnel-Stop",
+ "Tunnel-Reject",
+ "Tunnel-Link-Start",
+ "Tunnel-Link-Stop",
+ "Tunnel-Link-Reject",
+ "Failed",
+ };
+
+/* Acct-Authentic Accounting Attribute standard values */
+static const char *acct_auth[]={ NULL,
+ "RADIUS",
+ "Local",
+ "Remote",
+ };
+
+/* Acct-Terminate-Cause Accounting Attribute standard values */
+static const char *acct_term[]={ NULL,
+ "User Request",
+ "Lost Carrier",
+ "Lost Service",
+ "Idle Timeout",
+ "Session Timeout",
+ "Admin Reset",
+ "Admin Reboot",
+ "Port Error",
+ "NAS Error",
+ "NAS Request",
+ "NAS Reboot",
+ "Port Unneeded",
+ "Port Preempted",
+ "Port Suspended",
+ "Service Unavailable",
+ "Callback",
+ "User Error",
+ "Host Request",
+ };
+
+/* Tunnel-Type Attribute standard values */
+static const char *tunnel_type[]={ NULL,
+ "PPTP",
+ "L2F",
+ "L2TP",
+ "ATMP",
+ "VTP",
+ "AH",
+ "IP-IP",
+ "MIN-IP-IP",
+ "ESP",
+ "GRE",
+ "DVS",
+ "IP-in-IP Tunneling",
+ "VLAN",
+ };
+
+/* Tunnel-Medium-Type Attribute standard values */
+static const char *tunnel_medium[]={ NULL,
+ "IPv4",
+ "IPv6",
+ "NSAP",
+ "HDLC",
+ "BBN 1822",
+ "802",
+ "E.163",
+ "E.164",
+ "F.69",
+ "X.121",
+ "IPX",
+ "Appletalk",
+ "Decnet IV",
+ "Banyan Vines",
+ "E.164 with NSAP subaddress",
+ };
+
+/* ARAP-Zone-Access Attribute standard values */
+static const char *arap_zone[]={ NULL,
+ "Only access to dfl zone",
+ "Use zone filter inc.",
+ "Not used",
+ "Use zone filter exc.",
+ };
+
+static const char *prompt[]={ "No Echo",
+ "Echo",
+ };
+
+
+static struct attrtype {
+ const char *name; /* Attribute name */
+ const char **subtypes; /* Standard Values (if any) */
+ u_char siz_subtypes; /* Size of total standard values */
+ u_char first_subtype; /* First standard value is 0 or 1 */
+ void (*print_func)(netdissect_options *, register const u_char *, u_int, u_short);
+ } attr_type[]=
+ {
+ { NULL, NULL, 0, 0, NULL },
+ { "User-Name", NULL, 0, 0, print_attr_string },
+ { "User-Password", NULL, 0, 0, NULL },
+ { "CHAP-Password", NULL, 0, 0, NULL },
+ { "NAS-IP-Address", NULL, 0, 0, print_attr_address },
+ { "NAS-Port", NULL, 0, 0, print_attr_num },
+ { "Service-Type", serv_type, TAM_SIZE(serv_type)-1, 1, print_attr_num },
+ { "Framed-Protocol", frm_proto, TAM_SIZE(frm_proto)-1, 1, print_attr_num },
+ { "Framed-IP-Address", NULL, 0, 0, print_attr_address },
+ { "Framed-IP-Netmask", NULL, 0, 0, print_attr_address },
+ { "Framed-Routing", frm_routing, TAM_SIZE(frm_routing), 0, print_attr_num },
+ { "Filter-Id", NULL, 0, 0, print_attr_string },
+ { "Framed-MTU", NULL, 0, 0, print_attr_num },
+ { "Framed-Compression", frm_comp, TAM_SIZE(frm_comp), 0, print_attr_num },
+ { "Login-IP-Host", NULL, 0, 0, print_attr_address },
+ { "Login-Service", login_serv, TAM_SIZE(login_serv), 0, print_attr_num },
+ { "Login-TCP-Port", NULL, 0, 0, print_attr_num },
+ { "Unassigned", NULL, 0, 0, NULL }, /*17*/
+ { "Reply-Message", NULL, 0, 0, print_attr_string },
+ { "Callback-Number", NULL, 0, 0, print_attr_string },
+ { "Callback-Id", NULL, 0, 0, print_attr_string },
+ { "Unassigned", NULL, 0, 0, NULL }, /*21*/
+ { "Framed-Route", NULL, 0, 0, print_attr_string },
+ { "Framed-IPX-Network", NULL, 0, 0, print_attr_num },
+ { "State", NULL, 0, 0, print_attr_string },
+ { "Class", NULL, 0, 0, print_attr_string },
+ { "Vendor-Specific", NULL, 0, 0, print_vendor_attr },
+ { "Session-Timeout", NULL, 0, 0, print_attr_num },
+ { "Idle-Timeout", NULL, 0, 0, print_attr_num },
+ { "Termination-Action", term_action, TAM_SIZE(term_action), 0, print_attr_num },
+ { "Called-Station-Id", NULL, 0, 0, print_attr_string },
+ { "Calling-Station-Id", NULL, 0, 0, print_attr_string },
+ { "NAS-Identifier", NULL, 0, 0, print_attr_string },
+ { "Proxy-State", NULL, 0, 0, print_attr_string },
+ { "Login-LAT-Service", NULL, 0, 0, print_attr_string },
+ { "Login-LAT-Node", NULL, 0, 0, print_attr_string },
+ { "Login-LAT-Group", NULL, 0, 0, print_attr_string },
+ { "Framed-AppleTalk-Link", NULL, 0, 0, print_attr_num },
+ { "Framed-AppleTalk-Network", NULL, 0, 0, print_attr_num },
+ { "Framed-AppleTalk-Zone", NULL, 0, 0, print_attr_string },
+ { "Acct-Status-Type", acct_status, TAM_SIZE(acct_status)-1, 1, print_attr_num },
+ { "Acct-Delay-Time", NULL, 0, 0, print_attr_num },
+ { "Acct-Input-Octets", NULL, 0, 0, print_attr_num },
+ { "Acct-Output-Octets", NULL, 0, 0, print_attr_num },
+ { "Acct-Session-Id", NULL, 0, 0, print_attr_string },
+ { "Acct-Authentic", acct_auth, TAM_SIZE(acct_auth)-1, 1, print_attr_num },
+ { "Acct-Session-Time", NULL, 0, 0, print_attr_num },
+ { "Acct-Input-Packets", NULL, 0, 0, print_attr_num },
+ { "Acct-Output-Packets", NULL, 0, 0, print_attr_num },
+ { "Acct-Terminate-Cause", acct_term, TAM_SIZE(acct_term)-1, 1, print_attr_num },
+ { "Acct-Multi-Session-Id", NULL, 0, 0, print_attr_string },
+ { "Acct-Link-Count", NULL, 0, 0, print_attr_num },
+ { "Acct-Input-Gigawords", NULL, 0, 0, print_attr_num },
+ { "Acct-Output-Gigawords", NULL, 0, 0, print_attr_num },
+ { "Unassigned", NULL, 0, 0, NULL }, /*54*/
+ { "Event-Timestamp", NULL, 0, 0, print_attr_time },
+ { "Egress-VLANID", NULL, 0, 0, print_attr_num },
+ { "Ingress-Filters", ingress_filters, TAM_SIZE(ingress_filters)-1, 1, print_attr_num },
+ { "Egress-VLAN-Name", NULL, 0, 0, print_attr_string },
+ { "User-Priority-Table", NULL, 0, 0, NULL },
+ { "CHAP-Challenge", NULL, 0, 0, print_attr_string },
+ { "NAS-Port-Type", nas_port_type, TAM_SIZE(nas_port_type), 0, print_attr_num },
+ { "Port-Limit", NULL, 0, 0, print_attr_num },
+ { "Login-LAT-Port", NULL, 0, 0, print_attr_string }, /*63*/
+ { "Tunnel-Type", tunnel_type, TAM_SIZE(tunnel_type)-1, 1, print_attr_num },
+ { "Tunnel-Medium-Type", tunnel_medium, TAM_SIZE(tunnel_medium)-1, 1, print_attr_num },
+ { "Tunnel-Client-Endpoint", NULL, 0, 0, print_attr_string },
+ { "Tunnel-Server-Endpoint", NULL, 0, 0, print_attr_string },
+ { "Acct-Tunnel-Connection", NULL, 0, 0, print_attr_string },
+ { "Tunnel-Password", NULL, 0, 0, print_attr_string },
+ { "ARAP-Password", NULL, 0, 0, print_attr_strange },
+ { "ARAP-Features", NULL, 0, 0, print_attr_strange },
+ { "ARAP-Zone-Access", arap_zone, TAM_SIZE(arap_zone)-1, 1, print_attr_num }, /*72*/
+ { "ARAP-Security", NULL, 0, 0, print_attr_string },
+ { "ARAP-Security-Data", NULL, 0, 0, print_attr_string },
+ { "Password-Retry", NULL, 0, 0, print_attr_num },
+ { "Prompt", prompt, TAM_SIZE(prompt), 0, print_attr_num },
+ { "Connect-Info", NULL, 0, 0, print_attr_string },
+ { "Configuration-Token", NULL, 0, 0, print_attr_string },
+ { "EAP-Message", NULL, 0, 0, print_attr_string },
+ { "Message-Authenticator", NULL, 0, 0, print_attr_string }, /*80*/
+ { "Tunnel-Private-Group-ID", NULL, 0, 0, print_attr_string },
+ { "Tunnel-Assignment-ID", NULL, 0, 0, print_attr_string },
+ { "Tunnel-Preference", NULL, 0, 0, print_attr_num },
+ { "ARAP-Challenge-Response", NULL, 0, 0, print_attr_strange },
+ { "Acct-Interim-Interval", NULL, 0, 0, print_attr_num },
+ { "Acct-Tunnel-Packets-Lost", NULL, 0, 0, print_attr_num }, /*86*/
+ { "NAS-Port-Id", NULL, 0, 0, print_attr_string },
+ { "Framed-Pool", NULL, 0, 0, print_attr_string },
+ { "CUI", NULL, 0, 0, print_attr_string },
+ { "Tunnel-Client-Auth-ID", NULL, 0, 0, print_attr_string },
+ { "Tunnel-Server-Auth-ID", NULL, 0, 0, print_attr_string },
+ { "Unassigned", NULL, 0, 0, NULL }, /*92*/
+ { "Unassigned", NULL, 0, 0, NULL } /*93*/
+ };
+
+
+/*****************************/
+/* Print an attribute string */
+/* value pointed by 'data' */
+/* and 'length' size. */
+/*****************************/
+/* Returns nothing. */
+/*****************************/
+static void
+print_attr_string(netdissect_options *ndo,
+ register const u_char *data, u_int length, u_short attr_code)
+{
+ register u_int i;
+
+ ND_TCHECK2(data[0],length);
+
+ switch(attr_code)
+ {
+ case TUNNEL_PASS:
+ if (length < 3)
+ goto trunc;
+ if (*data && (*data <=0x1F) )
+ ND_PRINT((ndo, "Tag[%u] ", *data));
+ else
+ ND_PRINT((ndo, "Tag[Unused] "));
+ data++;
+ length--;
+ ND_PRINT((ndo, "Salt %u ", EXTRACT_16BITS(data)));
+ data+=2;
+ length-=2;
+ break;
+ case TUNNEL_CLIENT_END:
+ case TUNNEL_SERVER_END:
+ case TUNNEL_PRIV_GROUP:
+ case TUNNEL_ASSIGN_ID:
+ case TUNNEL_CLIENT_AUTH:
+ case TUNNEL_SERVER_AUTH:
+ if (*data <= 0x1F)
+ {
+ if (length < 1)
+ goto trunc;
+ if (*data)
+ ND_PRINT((ndo, "Tag[%u] ", *data));
+ else
+ ND_PRINT((ndo, "Tag[Unused] "));
+ data++;
+ length--;
+ }
+ break;
+ case EGRESS_VLAN_NAME:
+ if (length < 1)
+ goto trunc;
+ ND_PRINT((ndo, "%s (0x%02x) ",
+ tok2str(rfc4675_tagged,"Unknown tag",*data),
+ *data));
+ data++;
+ length--;
+ break;
+ }
+
+ for (i=0; i < length && *data; 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));
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-07 22:24:56 +0000