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8efc0c15 | 1 | /* |
bcbf86ec | 2 | * Copyright (c) 1999 Dug Song. All rights reserved. |
6ae2364d | 3 | * |
bcbf86ec | 4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
5260325f | 23 | */ |
8efc0c15 | 24 | |
8efc0c15 | 25 | #include "includes.h" |
a306f2dd | 26 | #include "uuencode.h" |
8efc0c15 | 27 | |
1e3b8b07 | 28 | RCSID("$OpenBSD: radix.c,v 1.14 2000/12/19 23:17:57 markus Exp $"); |
e5a0294f | 29 | |
8efc0c15 | 30 | #ifdef AFS |
31 | #include <krb.h> | |
32 | ||
1e3b8b07 | 33 | typedef u_char my_u_char; |
34 | typedef u_int my_u_int32_t; | |
35 | typedef u_short my_u_short; | |
8efc0c15 | 36 | |
37 | /* Nasty macros from BIND-4.9.2 */ | |
38 | ||
39 | #define GETSHORT(s, cp) { \ | |
40 | register my_u_char *t_cp = (my_u_char*)(cp); \ | |
41 | (s) = (((my_u_short)t_cp[0]) << 8) \ | |
42 | | (((my_u_short)t_cp[1])) \ | |
43 | ; \ | |
44 | (cp) += 2; \ | |
45 | } | |
46 | ||
47 | #define GETLONG(l, cp) { \ | |
48 | register my_u_char *t_cp = (my_u_char*)(cp); \ | |
49 | (l) = (((my_u_int32_t)t_cp[0]) << 24) \ | |
50 | | (((my_u_int32_t)t_cp[1]) << 16) \ | |
51 | | (((my_u_int32_t)t_cp[2]) << 8) \ | |
52 | | (((my_u_int32_t)t_cp[3])) \ | |
53 | ; \ | |
54 | (cp) += 4; \ | |
55 | } | |
56 | ||
57 | #define PUTSHORT(s, cp) { \ | |
58 | register my_u_short t_s = (my_u_short)(s); \ | |
59 | register my_u_char *t_cp = (my_u_char*)(cp); \ | |
60 | *t_cp++ = t_s >> 8; \ | |
61 | *t_cp = t_s; \ | |
62 | (cp) += 2; \ | |
63 | } | |
64 | ||
65 | #define PUTLONG(l, cp) { \ | |
66 | register my_u_int32_t t_l = (my_u_int32_t)(l); \ | |
67 | register my_u_char *t_cp = (my_u_char*)(cp); \ | |
68 | *t_cp++ = t_l >> 24; \ | |
69 | *t_cp++ = t_l >> 16; \ | |
70 | *t_cp++ = t_l >> 8; \ | |
71 | *t_cp = t_l; \ | |
72 | (cp) += 4; \ | |
73 | } | |
74 | ||
75 | #define GETSTRING(s, p, p_l) { \ | |
76 | register char* p_targ = (p) + p_l; \ | |
77 | register char* s_c = (s); \ | |
78 | register char* p_c = (p); \ | |
79 | while (*p_c && (p_c < p_targ)) { \ | |
80 | *s_c++ = *p_c++; \ | |
81 | } \ | |
82 | if (p_c == p_targ) { \ | |
83 | return 1; \ | |
84 | } \ | |
85 | *s_c = *p_c++; \ | |
86 | (p_l) = (p_l) - (p_c - (p)); \ | |
87 | (p) = p_c; \ | |
88 | } | |
89 | ||
90 | ||
6ae2364d | 91 | int |
1e3b8b07 | 92 | creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen) |
8efc0c15 | 93 | { |
5260325f | 94 | char *p, *s; |
95 | int len; | |
96 | char temp[2048]; | |
97 | ||
98 | p = temp; | |
99 | *p++ = 1; /* version */ | |
100 | s = creds->service; | |
101 | while (*s) | |
102 | *p++ = *s++; | |
103 | *p++ = *s; | |
104 | s = creds->instance; | |
105 | while (*s) | |
106 | *p++ = *s++; | |
107 | *p++ = *s; | |
108 | s = creds->realm; | |
109 | while (*s) | |
110 | *p++ = *s++; | |
111 | *p++ = *s; | |
112 | ||
113 | s = creds->pname; | |
114 | while (*s) | |
115 | *p++ = *s++; | |
116 | *p++ = *s; | |
117 | s = creds->pinst; | |
118 | while (*s) | |
119 | *p++ = *s++; | |
120 | *p++ = *s; | |
121 | /* Null string to repeat the realm. */ | |
122 | *p++ = '\0'; | |
123 | ||
124 | PUTLONG(creds->issue_date, p); | |
125 | { | |
1e3b8b07 | 126 | u_int endTime; |
127 | endTime = (u_int) krb_life_to_time(creds->issue_date, | |
5260325f | 128 | creds->lifetime); |
129 | PUTLONG(endTime, p); | |
130 | } | |
131 | ||
132 | memcpy(p, &creds->session, sizeof(creds->session)); | |
133 | p += sizeof(creds->session); | |
134 | ||
135 | PUTSHORT(creds->kvno, p); | |
136 | PUTLONG(creds->ticket_st.length, p); | |
137 | ||
138 | memcpy(p, creds->ticket_st.dat, creds->ticket_st.length); | |
139 | p += creds->ticket_st.length; | |
140 | len = p - temp; | |
141 | ||
1e3b8b07 | 142 | return (uuencode((u_char *)temp, len, (char *)buf, buflen)); |
8efc0c15 | 143 | } |
144 | ||
6ae2364d | 145 | int |
5260325f | 146 | radix_to_creds(const char *buf, CREDENTIALS *creds) |
8efc0c15 | 147 | { |
148 | ||
5260325f | 149 | char *p; |
150 | int len, tl; | |
151 | char version; | |
152 | char temp[2048]; | |
153 | ||
1e3b8b07 | 154 | len = uudecode(buf, (u_char *)temp, sizeof(temp)); |
1d1ffb87 | 155 | if (len < 0) |
5260325f | 156 | return 0; |
157 | ||
158 | p = temp; | |
159 | ||
160 | /* check version and length! */ | |
161 | if (len < 1) | |
162 | return 0; | |
163 | version = *p; | |
164 | p++; | |
165 | len--; | |
166 | ||
167 | GETSTRING(creds->service, p, len); | |
168 | GETSTRING(creds->instance, p, len); | |
169 | GETSTRING(creds->realm, p, len); | |
170 | ||
171 | GETSTRING(creds->pname, p, len); | |
172 | GETSTRING(creds->pinst, p, len); | |
173 | /* Ignore possibly different realm. */ | |
174 | while (*p && len) | |
175 | p++, len--; | |
176 | if (len == 0) | |
177 | return 0; | |
178 | p++, len--; | |
8efc0c15 | 179 | |
5260325f | 180 | /* Enough space for remaining fixed-length parts? */ |
181 | if (len < (4 + 4 + sizeof(creds->session) + 2 + 4)) | |
182 | return 0; | |
183 | ||
184 | GETLONG(creds->issue_date, p); | |
185 | len -= 4; | |
186 | { | |
1e3b8b07 | 187 | u_int endTime; |
5260325f | 188 | GETLONG(endTime, p); |
189 | len -= 4; | |
190 | creds->lifetime = krb_time_to_life(creds->issue_date, endTime); | |
191 | } | |
192 | ||
193 | memcpy(&creds->session, p, sizeof(creds->session)); | |
194 | p += sizeof(creds->session); | |
195 | len -= sizeof(creds->session); | |
196 | ||
197 | GETSHORT(creds->kvno, p); | |
198 | len -= 2; | |
199 | GETLONG(creds->ticket_st.length, p); | |
200 | len -= 4; | |
201 | ||
202 | tl = creds->ticket_st.length; | |
203 | if (tl < 0 || tl > len || tl > sizeof(creds->ticket_st.dat)) | |
204 | return 0; | |
205 | ||
206 | memcpy(creds->ticket_st.dat, p, tl); | |
207 | p += tl; | |
208 | len -= tl; | |
209 | ||
210 | return 1; | |
211 | } | |
8efc0c15 | 212 | #endif /* AFS */ |