2 * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska H
\9agskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the Kungliga Tekniska
20 * H
\9agskolan and its contributors.
22 * 4. Neither the name of the Institute nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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39 #include "sasl_mac_krb_locl.h"
41 RCSID("$Id: lsb_addr_comp.c,v 1.2 2001/12/04 02:06:08 rjs3 Exp $");
43 #include "krb-archaeology.h"
46 krb_lsb_antinet_ulong_cmp(u_int32_t x, u_int32_t y)
49 u_int32_t a = 0, b = 0;
50 u_int8_t *p = (u_int8_t*) &x;
51 u_int8_t *q = (u_int8_t*) &y;
53 for(i = sizeof(u_int32_t) - 1; i >= 0; i--){
65 krb_lsb_antinet_ushort_cmp(u_int16_t x, u_int16_t y)
68 u_int16_t a = 0, b = 0;
69 u_int8_t *p = (u_int8_t*) &x;
70 u_int8_t *q = (u_int8_t*) &y;
72 for(i = sizeof(u_int16_t) - 1; i >= 0; i--){
84 lsb_time(time_t t, struct sockaddr_in *src, struct sockaddr_in *dst)
90 * direction bit is the sign bit of the timestamp. Ok until
94 krb_warning("lsb_time: src = %s:%u\n",
95 inet_ntoa(src->sin_addr.s_addr), ntohs(src->sin_port));
96 krb_warning("lsb_time: dst = %s:%u\n",
97 inet_ntoa(dst->sin_addr.s_addr), ntohs(dst->sin_port));
100 /* For compatibility with broken old code, compares are done in VAX
101 byte order (LSBFIRST) */
102 if (krb_lsb_antinet_ulong_less(src->sin_addr.s_addr, /* src < recv */
103 dst->sin_addr.s_addr) < 0)
105 else if (krb_lsb_antinet_ulong_less(src->sin_addr.s_addr,
106 dst->sin_addr.s_addr)==0)
107 if (krb_lsb_antinet_ushort_less(src->sin_port, dst->sin_port) < 0)
110 * all that for one tiny bit! Heaven help those that talk to
113 if(krb_get_config_bool("reverse_lsb_test")) {
115 krb_warning("lsb_time: reversing direction: %d -> %d\n", dir, -dir);
119 else if((fw = krb_get_config_string("firewall_address"))) {
120 struct in_addr fw_addr;
121 fw_addr.sin_addr.s_addr = inet_addr(fw);
122 if(fw_addr.s_addr != INADDR_NONE) {
124 krb_warning("lsb_time: fw = %s\n", inet_ntoa(fw_addr));
125 /* negate if src < dst < fw || fw < dst < src */
126 s_lt_d = (krb_lsb_antinet_ulong_less(src->sin_addr.s_addr,
127 dst->sin_addr.s_addr) == -1);
128 d_lt_f = (krb_lsb_antinet_ulong_less(fw_addr.s_addr,
129 dst->sin_addr.s_addr) == 1);
130 if((s_lt_d ^ d_lt_f) == 0) {
132 krb_warning("lsb_time: reversing direction: %d -> %d\n",