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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 | 29 | RCSID("$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 | 37 | int |
38 | creds_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 | 92 | int |
93 | radix_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; |
153 | done: | |
154 | buffer_free(&b); | |
155 | return ret; | |
3c0ef626 | 156 | } |
157 | #endif /* AFS */ |