2 * Copyright (c) 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
21 * Initial contribution from John Hawkinson (jhawk@mit.edu).
25 static const char rcsid[] =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-krb.c,v 1.12 1999/11/21 09:36:55 fenner Exp $";
33 #include <sys/param.h>
35 #include <sys/socket.h>
37 #include <netinet/in.h>
38 #include <netinet/in_systm.h>
39 #include <netinet/ip.h>
40 #include <netinet/ip_var.h>
41 #include <netinet/udp.h>
42 #include <netinet/udp_var.h>
48 #include "interface.h"
49 #include "addrtoname.h"
51 const u_char *c_print(register const u_char *, register const u_char *);
52 const u_char *krb4_print_hdr(const u_char *);
53 void krb4_print(const u_char *);
54 void krb_print(const u_char *, u_int);
57 #define AUTH_MSG_KDC_REQUEST 1<<1
58 #define AUTH_MSG_KDC_REPLY 2<<1
59 #define AUTH_MSG_APPL_REQUEST 3<<1
60 #define AUTH_MSG_APPL_REQUEST_MUTUAL 4<<1
61 #define AUTH_MSG_ERR_REPLY 5<<1
62 #define AUTH_MSG_PRIVATE 6<<1
63 #define AUTH_MSG_SAFE 7<<1
64 #define AUTH_MSG_APPL_ERR 8<<1
65 #define AUTH_MSG_DIE 63<<1
68 #define KERB_ERR_NAME_EXP 1
69 #define KERB_ERR_SERVICE_EXP 2
70 #define KERB_ERR_AUTH_EXP 3
71 #define KERB_ERR_PKT_VER 4
72 #define KERB_ERR_NAME_MAST_KEY_VER 5
73 #define KERB_ERR_SERV_MAST_KEY_VER 6
74 #define KERB_ERR_BYTE_ORDER 7
75 #define KERB_ERR_PRINCIPAL_UNKNOWN 8
76 #define KERB_ERR_PRINCIPAL_NOT_UNIQUE 9
77 #define KERB_ERR_NULL_KEY 10
80 u_char pvno; /* Protocol Version */
81 u_char type; /* Type+B */
84 static char tstr[] = " [|kerberos]";
86 static struct tok type2str[] = {
87 { AUTH_MSG_KDC_REQUEST, "KDC_REQUEST" },
88 { AUTH_MSG_KDC_REPLY, "KDC_REPLY" },
89 { AUTH_MSG_APPL_REQUEST, "APPL_REQUEST" },
90 { AUTH_MSG_APPL_REQUEST_MUTUAL, "APPL_REQUEST_MUTUAL" },
91 { AUTH_MSG_ERR_REPLY, "ERR_REPLY" },
92 { AUTH_MSG_PRIVATE, "PRIVATE" },
93 { AUTH_MSG_SAFE, "SAFE" },
94 { AUTH_MSG_APPL_ERR, "APPL_ERR" },
95 { AUTH_MSG_DIE, "DIE" },
99 static struct tok kerr2str[] = {
100 { KERB_ERR_OK, "OK" },
101 { KERB_ERR_NAME_EXP, "NAME_EXP" },
102 { KERB_ERR_SERVICE_EXP, "SERVICE_EXP" },
103 { KERB_ERR_AUTH_EXP, "AUTH_EXP" },
104 { KERB_ERR_PKT_VER, "PKT_VER" },
105 { KERB_ERR_NAME_MAST_KEY_VER, "NAME_MAST_KEY_VER" },
106 { KERB_ERR_SERV_MAST_KEY_VER, "SERV_MAST_KEY_VER" },
107 { KERB_ERR_BYTE_ORDER, "BYTE_ORDER" },
108 { KERB_ERR_PRINCIPAL_UNKNOWN, "PRINCIPAL_UNKNOWN" },
109 { KERB_ERR_PRINCIPAL_NOT_UNIQUE,"PRINCIPAL_NOT_UNIQUE" },
110 { KERB_ERR_NULL_KEY, "NULL_KEY"},
115 /* little endian (unaligned) to host byte order */
116 /* XXX need to look at this... */
117 #define vtohlp(x) ((( ((char *)(x))[0] ) ) | \
118 (( ((char *)(x))[1] ) << 8) | \
119 (( ((char *)(x))[2] ) << 16) | \
120 (( ((char *)(x))[3] ) << 24))
121 #define vtohsp(x) ((( ((char *)(x))[0] ) ) | \
122 (( ((char *)(x))[1] ) << 8))
123 /* network (big endian) (unaligned) to host byte order */
124 #define ntohlp(x) ((( ((char *)(x))[3] ) ) | \
125 (( ((char *)(x))[2] ) << 8) | \
126 (( ((char *)(x))[1] ) << 16) | \
127 (( ((char *)(x))[0] ) << 24))
128 #define ntohsp(x) ((( ((char *)(x))[1] ) ) | \
129 (( ((char *)(x))[0] ) << 8))
134 c_print(register const u_char *s, register const u_char *ep)
152 c ^= 0x40; /* DEL to ?, others to alpha */
163 krb4_print_hdr(const u_char *cp)
167 #define PRINT if ((cp = c_print(cp, snapend)) == NULL) goto trunc
184 krb4_print(const u_char *cp)
186 register const struct krb *kp;
190 #define PRINT if ((cp = c_print(cp, snapend)) == NULL) goto trunc
191 /* True if struct krb is little endian */
192 #define IS_LENDIAN(kp) (((kp)->type & 0x01) != 0)
193 #define KTOHSP(kp, cp) (IS_LENDIAN(kp) ? vtohsp(cp) : ntohsp(cp))
195 kp = (struct krb *)cp;
197 if ((&kp->type) >= snapend) {
202 type = kp->type & (0xFF << 1);
205 IS_LENDIAN(kp) ? "le" : "be", tok2str(type2str, NULL, type));
209 case AUTH_MSG_KDC_REQUEST:
210 if ((cp = krb4_print_hdr(cp)) == NULL)
214 printf(" %dmin ", *cp++ * 5);
220 case AUTH_MSG_APPL_REQUEST:
223 printf("v%d ", *cp++);
226 printf(" (%d)", *cp++);
228 printf(" (%d)", *cp);
231 case AUTH_MSG_KDC_REPLY:
232 if ((cp = krb4_print_hdr(cp)) == NULL)
234 cp += 10; /* timestamp + n + exp + kvno */
235 TCHECK2(*cp, sizeof(short));
236 len = KTOHSP(kp, cp);
237 printf(" (%d)", len);
240 case AUTH_MSG_ERR_REPLY:
241 if ((cp = krb4_print_hdr(cp)) == NULL)
243 cp += 4; /* timestamp */
244 TCHECK2(*cp, sizeof(short));
245 printf(" %s ", tok2str(kerr2str, NULL, KTOHSP(kp, cp)));
251 fputs("(unknown)", stdout);
261 krb_print(const u_char *dat, u_int length)
263 register const struct krb *kp;
265 kp = (struct krb *)dat;
267 if (dat >= snapend) {
277 printf(" v%d", kp->pvno);
281 printf(" v%d", kp->pvno);
282 krb4_print((const u_char *)kp);
287 fputs(" v5", stdout);
288 /* Decode ASN.1 here "someday" */