Annotation of src/usr.bin/ssh/radix.c, Revision 1.16.2.1
1.1 deraadt 1: /*
1.13 deraadt 2: * Copyright (c) 1999 Dug Song. All rights reserved.
1.8 markus 3: *
1.13 deraadt 4: * Redistribution and use in source and binary forms, with or without
5: * modification, are permitted provided that the following conditions
6: * are met:
7: * 1. Redistributions of source code must retain the above copyright
8: * notice, this list of conditions and the following disclaimer.
9: * 2. Redistributions in binary form must reproduce the above copyright
10: * notice, this list of conditions and the following disclaimer in the
11: * documentation and/or other materials provided with the distribution.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.5 deraadt 23: */
1.4 markus 24:
1.1 deraadt 25: #include "includes.h"
1.9 markus 26: #include "uuencode.h"
1.1 deraadt 27:
1.16.2.1! jason 28: RCSID("$OpenBSD: radix.c,v 1.17 2001/11/19 19:02:16 mpech Exp $");
1.12 djm 29:
1.1 deraadt 30: #ifdef AFS
31: #include <krb.h>
1.16 itojun 32:
33: #include <radix.h>
1.1 deraadt 34:
1.14 markus 35: typedef u_char my_u_char;
36: typedef u_int my_u_int32_t;
37: typedef u_short my_u_short;
1.1 deraadt 38:
39: /* Nasty macros from BIND-4.9.2 */
40:
41: #define GETSHORT(s, cp) { \
1.16.2.1! jason 42: my_u_char *t_cp = (my_u_char *)(cp); \
1.1 deraadt 43: (s) = (((my_u_short)t_cp[0]) << 8) \
44: | (((my_u_short)t_cp[1])) \
45: ; \
46: (cp) += 2; \
47: }
48:
49: #define GETLONG(l, cp) { \
1.16.2.1! jason 50: my_u_char *t_cp = (my_u_char *)(cp); \
1.1 deraadt 51: (l) = (((my_u_int32_t)t_cp[0]) << 24) \
52: | (((my_u_int32_t)t_cp[1]) << 16) \
53: | (((my_u_int32_t)t_cp[2]) << 8) \
54: | (((my_u_int32_t)t_cp[3])) \
55: ; \
56: (cp) += 4; \
57: }
58:
59: #define PUTSHORT(s, cp) { \
1.16.2.1! jason 60: my_u_short t_s = (my_u_short)(s); \
! 61: my_u_char *t_cp = (my_u_char *)(cp); \
1.1 deraadt 62: *t_cp++ = t_s >> 8; \
63: *t_cp = t_s; \
64: (cp) += 2; \
65: }
66:
67: #define PUTLONG(l, cp) { \
1.16.2.1! jason 68: my_u_int32_t t_l = (my_u_int32_t)(l); \
! 69: my_u_char *t_cp = (my_u_char *)(cp); \
1.1 deraadt 70: *t_cp++ = t_l >> 24; \
71: *t_cp++ = t_l >> 16; \
72: *t_cp++ = t_l >> 8; \
73: *t_cp = t_l; \
74: (cp) += 4; \
75: }
76:
77: #define GETSTRING(s, p, p_l) { \
1.16.2.1! jason 78: char *p_targ = (p) + p_l; \
! 79: char *s_c = (s); \
! 80: char *p_c = (p); \
1.1 deraadt 81: while (*p_c && (p_c < p_targ)) { \
82: *s_c++ = *p_c++; \
83: } \
84: if (p_c == p_targ) { \
85: return 1; \
86: } \
87: *s_c = *p_c++; \
88: (p_l) = (p_l) - (p_c - (p)); \
89: (p) = p_c; \
90: }
91:
92:
1.8 markus 93: int
1.14 markus 94: creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen)
1.1 deraadt 95: {
1.4 markus 96: char *p, *s;
97: int len;
98: char temp[2048];
99:
100: p = temp;
101: *p++ = 1; /* version */
102: s = creds->service;
103: while (*s)
104: *p++ = *s++;
105: *p++ = *s;
106: s = creds->instance;
107: while (*s)
108: *p++ = *s++;
109: *p++ = *s;
110: s = creds->realm;
111: while (*s)
112: *p++ = *s++;
113: *p++ = *s;
114:
115: s = creds->pname;
116: while (*s)
117: *p++ = *s++;
118: *p++ = *s;
119: s = creds->pinst;
120: while (*s)
121: *p++ = *s++;
122: *p++ = *s;
123: /* Null string to repeat the realm. */
124: *p++ = '\0';
125:
126: PUTLONG(creds->issue_date, p);
127: {
1.14 markus 128: u_int endTime;
129: endTime = (u_int) krb_life_to_time(creds->issue_date,
1.4 markus 130: creds->lifetime);
131: PUTLONG(endTime, p);
132: }
133:
134: memcpy(p, &creds->session, sizeof(creds->session));
135: p += sizeof(creds->session);
136:
137: PUTSHORT(creds->kvno, p);
138: PUTLONG(creds->ticket_st.length, p);
139:
140: memcpy(p, creds->ticket_st.dat, creds->ticket_st.length);
141: p += creds->ticket_st.length;
142: len = p - temp;
1.1 deraadt 143:
1.14 markus 144: return (uuencode((u_char *)temp, len, (char *)buf, buflen));
1.1 deraadt 145: }
146:
1.8 markus 147: int
1.4 markus 148: radix_to_creds(const char *buf, CREDENTIALS *creds)
1.1 deraadt 149: {
150:
1.4 markus 151: char *p;
152: int len, tl;
153: char version;
154: char temp[2048];
155:
1.14 markus 156: len = uudecode(buf, (u_char *)temp, sizeof(temp));
1.11 markus 157: if (len < 0)
1.4 markus 158: return 0;
159:
160: p = temp;
161:
162: /* check version and length! */
163: if (len < 1)
164: return 0;
165: version = *p;
166: p++;
167: len--;
168:
169: GETSTRING(creds->service, p, len);
170: GETSTRING(creds->instance, p, len);
171: GETSTRING(creds->realm, p, len);
172:
173: GETSTRING(creds->pname, p, len);
174: GETSTRING(creds->pinst, p, len);
175: /* Ignore possibly different realm. */
176: while (*p && len)
177: p++, len--;
178: if (len == 0)
179: return 0;
180: p++, len--;
181:
182: /* Enough space for remaining fixed-length parts? */
183: if (len < (4 + 4 + sizeof(creds->session) + 2 + 4))
184: return 0;
185:
186: GETLONG(creds->issue_date, p);
187: len -= 4;
188: {
1.14 markus 189: u_int endTime;
1.4 markus 190: GETLONG(endTime, p);
191: len -= 4;
192: creds->lifetime = krb_time_to_life(creds->issue_date, endTime);
193: }
194:
195: memcpy(&creds->session, p, sizeof(creds->session));
196: p += sizeof(creds->session);
197: len -= sizeof(creds->session);
198:
199: GETSHORT(creds->kvno, p);
200: len -= 2;
201: GETLONG(creds->ticket_st.length, p);
202: len -= 4;
203:
204: tl = creds->ticket_st.length;
205: if (tl < 0 || tl > len || tl > sizeof(creds->ticket_st.dat))
206: return 0;
207:
208: memcpy(creds->ticket_st.dat, p, tl);
209: p += tl;
210: len -= tl;
211:
212: return 1;
1.1 deraadt 213: }
214: #endif /* AFS */
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