diff options
Diffstat (limited to 'crypto/openssh/radix.c')
| -rw-r--r-- | crypto/openssh/radix.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/crypto/openssh/radix.c b/crypto/openssh/radix.c new file mode 100644 index 0000000..8429204 --- /dev/null +++ b/crypto/openssh/radix.c @@ -0,0 +1,212 @@ +/* + * Copyright (c) 1999 Dug Song. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "includes.h" +#include "uuencode.h" + +RCSID("$OpenBSD: radix.c,v 1.13 2000/09/07 20:27:52 deraadt Exp $"); + +#ifdef AFS +#include <krb.h> + +typedef unsigned char my_u_char; +typedef unsigned int my_u_int32_t; +typedef unsigned short my_u_short; + +/* Nasty macros from BIND-4.9.2 */ + +#define GETSHORT(s, cp) { \ + register my_u_char *t_cp = (my_u_char*)(cp); \ + (s) = (((my_u_short)t_cp[0]) << 8) \ + | (((my_u_short)t_cp[1])) \ + ; \ + (cp) += 2; \ +} + +#define GETLONG(l, cp) { \ + register my_u_char *t_cp = (my_u_char*)(cp); \ + (l) = (((my_u_int32_t)t_cp[0]) << 24) \ + | (((my_u_int32_t)t_cp[1]) << 16) \ + | (((my_u_int32_t)t_cp[2]) << 8) \ + | (((my_u_int32_t)t_cp[3])) \ + ; \ + (cp) += 4; \ +} + +#define PUTSHORT(s, cp) { \ + register my_u_short t_s = (my_u_short)(s); \ + register my_u_char *t_cp = (my_u_char*)(cp); \ + *t_cp++ = t_s >> 8; \ + *t_cp = t_s; \ + (cp) += 2; \ +} + +#define PUTLONG(l, cp) { \ + register my_u_int32_t t_l = (my_u_int32_t)(l); \ + register my_u_char *t_cp = (my_u_char*)(cp); \ + *t_cp++ = t_l >> 24; \ + *t_cp++ = t_l >> 16; \ + *t_cp++ = t_l >> 8; \ + *t_cp = t_l; \ + (cp) += 4; \ +} + +#define GETSTRING(s, p, p_l) { \ + register char* p_targ = (p) + p_l; \ + register char* s_c = (s); \ + register char* p_c = (p); \ + while (*p_c && (p_c < p_targ)) { \ + *s_c++ = *p_c++; \ + } \ + if (p_c == p_targ) { \ + return 1; \ + } \ + *s_c = *p_c++; \ + (p_l) = (p_l) - (p_c - (p)); \ + (p) = p_c; \ +} + + +int +creds_to_radix(CREDENTIALS *creds, unsigned char *buf, size_t buflen) +{ + char *p, *s; + int len; + char temp[2048]; + + p = temp; + *p++ = 1; /* version */ + s = creds->service; + while (*s) + *p++ = *s++; + *p++ = *s; + s = creds->instance; + while (*s) + *p++ = *s++; + *p++ = *s; + s = creds->realm; + while (*s) + *p++ = *s++; + *p++ = *s; + + s = creds->pname; + while (*s) + *p++ = *s++; + *p++ = *s; + s = creds->pinst; + while (*s) + *p++ = *s++; + *p++ = *s; + /* Null string to repeat the realm. */ + *p++ = '\0'; + + PUTLONG(creds->issue_date, p); + { + unsigned int endTime; + endTime = (unsigned int) krb_life_to_time(creds->issue_date, + creds->lifetime); + PUTLONG(endTime, p); + } + + memcpy(p, &creds->session, sizeof(creds->session)); + p += sizeof(creds->session); + + PUTSHORT(creds->kvno, p); + PUTLONG(creds->ticket_st.length, p); + + memcpy(p, creds->ticket_st.dat, creds->ticket_st.length); + p += creds->ticket_st.length; + len = p - temp; + + return (uuencode((unsigned char *)temp, len, (char *)buf, buflen)); +} + +int +radix_to_creds(const char *buf, CREDENTIALS *creds) +{ + + char *p; + int len, tl; + char version; + char temp[2048]; + + len = uudecode(buf, (unsigned char *)temp, sizeof(temp)); + if (len < 0) + return 0; + + p = temp; + + /* check version and length! */ + if (len < 1) + return 0; + version = *p; + p++; + len--; + + GETSTRING(creds->service, p, len); + GETSTRING(creds->instance, p, len); + GETSTRING(creds->realm, p, len); + + GETSTRING(creds->pname, p, len); + GETSTRING(creds->pinst, p, len); + /* Ignore possibly different realm. */ + while (*p && len) + p++, len--; + if (len == 0) + return 0; + p++, len--; + + /* Enough space for remaining fixed-length parts? */ + if (len < (4 + 4 + sizeof(creds->session) + 2 + 4)) + return 0; + + GETLONG(creds->issue_date, p); + len -= 4; + { + unsigned int endTime; + GETLONG(endTime, p); + len -= 4; + creds->lifetime = krb_time_to_life(creds->issue_date, endTime); + } + + memcpy(&creds->session, p, sizeof(creds->session)); + p += sizeof(creds->session); + len -= sizeof(creds->session); + + GETSHORT(creds->kvno, p); + len -= 2; + GETLONG(creds->ticket_st.length, p); + len -= 4; + + tl = creds->ticket_st.length; + if (tl < 0 || tl > len || tl > sizeof(creds->ticket_st.dat)) + return 0; + + memcpy(creds->ticket_st.dat, p, tl); + p += tl; + len -= tl; + + return 1; +} +#endif /* AFS */ |
