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 | |
---|
29 | RCSID("$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 | |
---|
37 | int |
---|
38 | creds_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 | |
---|
92 | int |
---|
93 | radix_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; |
---|
154 | done: |
---|
155 | buffer_free(&b); |
---|
156 | return ret; |
---|
157 | } |
---|
158 | #endif /* AFS */ |
---|