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3c0ef626 1/*
2 * Copyright (c) 1999 Dug Song. All rights reserved.
700318f3 3 * Copyright (c) 2002 Markus Friedl. All rights reserved.
3c0ef626 4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "includes.h"
27#include "uuencode.h"
28
f5799ae1 29RCSID("$OpenBSD: radix.c,v 1.21 2002/06/19 00:27:55 deraadt Exp $");
3c0ef626 30
31#ifdef AFS
32#include <krb.h>
33
34#include <radix.h>
700318f3 35#include "bufaux.h"
3c0ef626 36
700318f3 37int
38creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen)
39{
40 Buffer b;
41 int ret;
3c0ef626 42
700318f3 43 buffer_init(&b);
3c0ef626 44
700318f3 45 buffer_put_char(&b, 1); /* version */
3c0ef626 46
700318f3 47 buffer_append(&b, creds->service, strlen(creds->service));
48 buffer_put_char(&b, '\0');
49 buffer_append(&b, creds->instance, strlen(creds->instance));
50 buffer_put_char(&b, '\0');
51 buffer_append(&b, creds->realm, strlen(creds->realm));
52 buffer_put_char(&b, '\0');
53 buffer_append(&b, creds->pname, strlen(creds->pname));
54 buffer_put_char(&b, '\0');
55 buffer_append(&b, creds->pinst, strlen(creds->pinst));
56 buffer_put_char(&b, '\0');
3c0ef626 57
3c0ef626 58 /* Null string to repeat the realm. */
700318f3 59 buffer_put_char(&b, '\0');
3c0ef626 60
700318f3 61 buffer_put_int(&b, creds->issue_date);
62 buffer_put_int(&b, krb_life_to_time(creds->issue_date,
63 creds->lifetime));
64 buffer_append(&b, creds->session, sizeof(creds->session));
65 buffer_put_short(&b, creds->kvno);
3c0ef626 66
700318f3 67 /* 32 bit size + data */
68 buffer_put_string(&b, creds->ticket_st.dat, creds->ticket_st.length);
3c0ef626 69
700318f3 70 ret = uuencode(buffer_ptr(&b), buffer_len(&b), (char *)buf, buflen);
3c0ef626 71
700318f3 72 buffer_free(&b);
73 return ret;
3c0ef626 74}
75
700318f3 76#define GETSTRING(b, t, tlen) \
77 do { \
78 int i, found = 0; \
79 for (i = 0; i < tlen; i++) { \
80 if (buffer_len(b) == 0) \
81 goto done; \
82 t[i] = buffer_get_char(b); \
83 if (t[i] == '\0') { \
84 found = 1; \
85 break; \
86 } \
87 } \
88 if (!found) \
89 goto done; \
90 } while(0)
91
3c0ef626 92int
93radix_to_creds(const char *buf, CREDENTIALS *creds)
94{
700318f3 95 Buffer b;
96 char c, version, *space, *p;
97 u_int endTime;
98 int len, blen, ret;
3c0ef626 99
700318f3 100 ret = 0;
101 blen = strlen(buf);
3c0ef626 102
700318f3 103 /* sanity check for size */
104 if (blen > 8192)
3c0ef626 105 return 0;
106
700318f3 107 buffer_init(&b);
108 space = buffer_append_space(&b, blen);
3c0ef626 109
110 /* check version and length! */
700318f3 111 len = uudecode(buf, space, blen);
3c0ef626 112 if (len < 1)
700318f3 113 goto done;
3c0ef626 114
700318f3 115 version = buffer_get_char(&b);
3c0ef626 116
700318f3 117 GETSTRING(&b, creds->service, sizeof creds->service);
118 GETSTRING(&b, creds->instance, sizeof creds->instance);
119 GETSTRING(&b, creds->realm, sizeof creds->realm);
120 GETSTRING(&b, creds->pname, sizeof creds->pname);
121 GETSTRING(&b, creds->pinst, sizeof creds->pinst);
3c0ef626 122
700318f3 123 if (buffer_len(&b) == 0)
124 goto done;
3c0ef626 125
700318f3 126 /* Ignore possibly different realm. */
127 while (buffer_len(&b) > 0 && (c = buffer_get_char(&b)) != '\0')
128 ;
129
130 if (buffer_len(&b) == 0)
131 goto done;
132
133 creds->issue_date = buffer_get_int(&b);
134
135 endTime = buffer_get_int(&b);
136 creds->lifetime = krb_time_to_life(creds->issue_date, endTime);
137
138 len = buffer_len(&b);
139 if (len < sizeof(creds->session))
140 goto done;
141 memcpy(&creds->session, buffer_ptr(&b), sizeof(creds->session));
142 buffer_consume(&b, sizeof(creds->session));
143
144 creds->kvno = buffer_get_short(&b);
145
146 p = buffer_get_string(&b, &len);
147 if (len < 0 || len > sizeof(creds->ticket_st.dat))
148 goto done;
149 memcpy(&creds->ticket_st.dat, p, len);
150 creds->ticket_st.length = len;
f5799ae1 151
700318f3 152 ret = 1;
153done:
154 buffer_free(&b);
155 return ret;
3c0ef626 156}
157#endif /* AFS */
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