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Diffstat (limited to 'crypto/kerberosIV/lib/krb/rw.c')
-rw-r--r-- | crypto/kerberosIV/lib/krb/rw.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/rw.c b/crypto/kerberosIV/lib/krb/rw.c new file mode 100644 index 0000000..88589c3 --- /dev/null +++ b/crypto/kerberosIV/lib/krb/rw.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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. + */ + +/* Almost all programs use these routines (implicitly) so it's a good + * place to put the version string. */ + +#include "version.h" + +#include "krb_locl.h" + +RCSID("$Id: rw.c,v 1.12 1999/12/02 16:58:44 joda Exp $"); + +int +krb_get_int(void *f, u_int32_t *to, int size, int lsb) +{ + int i; + unsigned char *from = (unsigned char *)f; + + *to = 0; + if(lsb){ + for(i = size-1; i >= 0; i--) + *to = (*to << 8) | from[i]; + }else{ + for(i = 0; i < size; i++) + *to = (*to << 8) | from[i]; + } + return size; +} + +int +krb_put_int(u_int32_t from, void *to, size_t rem, int size) +{ + int i; + unsigned char *p = (unsigned char *)to; + + if (rem < size) + return -1; + + for(i = size - 1; i >= 0; i--){ + p[i] = from & 0xff; + from >>= 8; + } + return size; +} + + +/* addresses are always sent in network byte order */ + +int +krb_get_address(void *from, u_int32_t *to) +{ + unsigned char *p = (unsigned char*)from; + *to = htonl((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]); + return 4; +} + +int +krb_put_address(u_int32_t addr, void *to, size_t rem) +{ + return krb_put_int(ntohl(addr), to, rem, 4); +} + +int +krb_put_string(const char *from, void *to, size_t rem) +{ + size_t len = strlen(from) + 1; + + if (rem < len) + return -1; + memcpy(to, from, len); + return len; +} + +int +krb_get_string(void *from, char *to, size_t to_size) +{ + strlcpy (to, (char *)from, to_size); + return strlen((char *)from) + 1; +} + +int +krb_get_nir(void *from, char *name, char *instance, char *realm) +{ + char *p = (char *)from; + + p += krb_get_string(p, name, ANAME_SZ); + p += krb_get_string(p, instance, INST_SZ); + if(realm) + p += krb_get_string(p, realm, REALM_SZ); + return p - (char *)from; +} + +int +krb_put_nir(const char *name, + const char *instance, + const char *realm, + void *to, + size_t rem) +{ + char *p = (char *)to; + int tmp; + + tmp = krb_put_string(name, p, rem); + if (tmp < 0) + return tmp; + p += tmp; + rem -= tmp; + + tmp = krb_put_string(instance, p, rem); + if (tmp < 0) + return tmp; + p += tmp; + rem -= tmp; + + if (realm) { + tmp = krb_put_string(realm, p, rem); + if (tmp < 0) + return tmp; + p += tmp; + rem -= tmp; + } + return p - (char *)to; +} |