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 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #ifdef AFS 34 #include <krb.h> 35 36 #include <radix.h> 37 #include "bufaux.h" 38 39 int 40 creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen) 41 { 42 Buffer b; 43 int ret; 44 45 buffer_init(&b); 46 47 buffer_put_char(&b, 1); /* version */ 48 49 buffer_append(&b, creds->service, strlen(creds->service)); 50 buffer_put_char(&b, '\0'); 51 buffer_append(&b, creds->instance, strlen(creds->instance)); 52 buffer_put_char(&b, '\0'); 53 buffer_append(&b, creds->realm, strlen(creds->realm)); 54 buffer_put_char(&b, '\0'); 55 buffer_append(&b, creds->pname, strlen(creds->pname)); 56 buffer_put_char(&b, '\0'); 57 buffer_append(&b, creds->pinst, strlen(creds->pinst)); 58 buffer_put_char(&b, '\0'); 59 60 /* Null string to repeat the realm. */ 61 buffer_put_char(&b, '\0'); 62 63 buffer_put_int(&b, creds->issue_date); 64 buffer_put_int(&b, krb_life_to_time(creds->issue_date, 65 creds->lifetime)); 66 buffer_append(&b, creds->session, sizeof(creds->session)); 67 buffer_put_short(&b, creds->kvno); 68 69 /* 32 bit size + data */ 70 buffer_put_string(&b, creds->ticket_st.dat, creds->ticket_st.length); 71 72 ret = uuencode(buffer_ptr(&b), buffer_len(&b), (char *)buf, buflen); 73 74 buffer_free(&b); 75 return ret; 76 } 77 78 #define GETSTRING(b, t, tlen) \ 79 do { \ 80 int i, found = 0; \ 81 for (i = 0; i < tlen; i++) { \ 82 if (buffer_len(b) == 0) \ 83 goto done; \ 84 t[i] = buffer_get_char(b); \ 85 if (t[i] == '\0') { \ 86 found = 1; \ 87 break; \ 88 } \ 89 } \ 90 if (!found) \ 91 goto done; \ 92 } while(0) 93 94 int 95 radix_to_creds(const char *buf, CREDENTIALS *creds) 96 { 97 Buffer b; 98 u_char *space; 99 char c, version, *p; 100 u_int endTime, len; 101 int blen, ret; 102 103 ret = 0; 104 blen = strlen(buf); 105 106 /* sanity check for size */ 107 if (blen > 8192) 108 return 0; 109 110 buffer_init(&b); 111 space = buffer_append_space(&b, blen); 112 113 /* check version and length! */ 114 len = uudecode(buf, space, blen); 115 if (len < 1) 116 goto done; 117 118 version = buffer_get_char(&b); 119 120 GETSTRING(&b, creds->service, sizeof creds->service); 121 GETSTRING(&b, creds->instance, sizeof creds->instance); 122 GETSTRING(&b, creds->realm, sizeof creds->realm); 123 GETSTRING(&b, creds->pname, sizeof creds->pname); 124 GETSTRING(&b, creds->pinst, sizeof creds->pinst); 125 126 if (buffer_len(&b) == 0) 127 goto done; 128 129 /* Ignore possibly different realm. */ 130 while (buffer_len(&b) > 0 && (c = buffer_get_char(&b)) != '\0') 131 ; 132 133 if (buffer_len(&b) == 0) 134 goto done; 135 136 creds->issue_date = buffer_get_int(&b); 137 138 endTime = buffer_get_int(&b); 139 creds->lifetime = krb_time_to_life(creds->issue_date, endTime); 140 141 len = buffer_len(&b); 142 if (len < sizeof(creds->session)) 143 goto done; 144 memcpy(&creds->session, buffer_ptr(&b), sizeof(creds->session)); 145 buffer_consume(&b, sizeof(creds->session)); 146 147 creds->kvno = buffer_get_short(&b); 148 149 p = buffer_get_string(&b, &len); 150 if (len < 0 || len > sizeof(creds->ticket_st.dat)) 151 goto done; 152 memcpy(&creds->ticket_st.dat, p, len); 153 creds->ticket_st.length = len; 154 155 ret = 1; 156 done: 157 buffer_free(&b); 158 return ret; 159 } 160 #endif /* AFS */ 161