source: trunk/third/openssh/radix.c @ 18759

Revision 18759, 4.3 KB checked in by zacheiss, 22 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r18758, which included commits to RCS files with non-trunk default branches.
Line 
1/*
2 * Copyright (c) 1999 Dug Song.  All rights reserved.
3 * Copyright (c) 2002 Markus Friedl.  All rights reserved.
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
29RCSID("$OpenBSD: radix.c,v 1.22 2002/09/09 14:54:15 markus Exp $");
30
31#ifdef AFS
32#include <krb.h>
33
34#include <radix.h>
35#include "bufaux.h"
36
37int
38creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen)
39{
40        Buffer b;
41        int ret;
42
43        buffer_init(&b);
44
45        buffer_put_char(&b, 1); /* version */
46
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');
57
58        /* Null string to repeat the realm. */
59        buffer_put_char(&b, '\0');
60
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);
66
67        /* 32 bit size + data */
68        buffer_put_string(&b, creds->ticket_st.dat, creds->ticket_st.length);
69
70        ret = uuencode(buffer_ptr(&b), buffer_len(&b), (char *)buf, buflen);
71
72        buffer_free(&b);
73        return ret;
74}
75
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
92int
93radix_to_creds(const char *buf, CREDENTIALS *creds)
94{
95        Buffer b;
96        u_char *space;
97        char c, version, *p;
98        u_int endTime, len;
99        int blen, ret;
100
101        ret = 0;
102        blen = strlen(buf);
103
104        /* sanity check for size */
105        if (blen > 8192)
106                return 0;
107
108        buffer_init(&b);
109        space = buffer_append_space(&b, blen);
110
111        /* check version and length! */
112        len = uudecode(buf, space, blen);
113        if (len < 1)
114                goto done;
115
116        version = buffer_get_char(&b);
117
118        GETSTRING(&b, creds->service, sizeof creds->service);
119        GETSTRING(&b, creds->instance, sizeof creds->instance);
120        GETSTRING(&b, creds->realm, sizeof creds->realm);
121        GETSTRING(&b, creds->pname, sizeof creds->pname);
122        GETSTRING(&b, creds->pinst, sizeof creds->pinst);
123
124        if (buffer_len(&b) == 0)
125                goto done;
126
127        /* Ignore possibly different realm. */
128        while (buffer_len(&b) > 0 && (c = buffer_get_char(&b)) != '\0')
129                ;
130
131        if (buffer_len(&b) == 0)
132                goto done;
133
134        creds->issue_date = buffer_get_int(&b);
135
136        endTime = buffer_get_int(&b);
137        creds->lifetime = krb_time_to_life(creds->issue_date, endTime);
138
139        len = buffer_len(&b);
140        if (len < sizeof(creds->session))
141                goto done;
142        memcpy(&creds->session, buffer_ptr(&b), sizeof(creds->session));
143        buffer_consume(&b, sizeof(creds->session));
144
145        creds->kvno = buffer_get_short(&b);
146
147        p = buffer_get_string(&b, &len);
148        if (len < 0 || len > sizeof(creds->ticket_st.dat))
149                goto done;
150        memcpy(&creds->ticket_st.dat, p, len);
151        creds->ticket_st.length = len;
152
153        ret = 1;
154done:
155        buffer_free(&b);
156        return ret;
157}
158#endif /* AFS */
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