diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/lsb_addr_comp.c')
-rw-r--r-- | crypto/kerberosIV/lib/krb/lsb_addr_comp.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/lsb_addr_comp.c b/crypto/kerberosIV/lib/krb/lsb_addr_comp.c new file mode 100644 index 0000000..bc3c484 --- /dev/null +++ b/crypto/kerberosIV/lib/krb/lsb_addr_comp.c @@ -0,0 +1,105 @@ +/* + * Copyright (c) 1995, 1996, 1997 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. 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. + */ + +#include "krb_locl.h" + +RCSID("$Id: lsb_addr_comp.c,v 1.9 1997/04/01 08:18:37 joda Exp $"); + +#include "lsb_addr_comp.h" + +int +krb_lsb_antinet_ulong_cmp(u_int32_t x, u_int32_t y) +{ + int i; + u_int32_t a = 0, b = 0; + u_int8_t *p = (u_int8_t*) &x; + u_int8_t *q = (u_int8_t*) &y; + + for(i = sizeof(u_int32_t) - 1; i >= 0; i--){ + a = (a << 8) | p[i]; + b = (b << 8) | q[i]; + } + if(a > b) + return 1; + if(a < b) + return -1; + return 0; +} + +int +krb_lsb_antinet_ushort_cmp(u_int16_t x, u_int16_t y) +{ + int i; + u_int16_t a = 0, b = 0; + u_int8_t *p = (u_int8_t*) &x; + u_int8_t *q = (u_int8_t*) &y; + + for(i = sizeof(u_int16_t) - 1; i >= 0; i--){ + a = (a << 8) | p[i]; + b = (b << 8) | q[i]; + } + if(a > b) + return 1; + if(a < b) + return -1; + return 0; +} + +u_int32_t +lsb_time(time_t t, struct sockaddr_in *src, struct sockaddr_in *dst) +{ + /* + * direction bit is the sign bit of the timestamp. Ok until + * 2038?? + */ + /* For compatibility with broken old code, compares are done in VAX + byte order (LSBFIRST) */ + if (krb_lsb_antinet_ulong_less(src->sin_addr.s_addr, /* src < recv */ + dst->sin_addr.s_addr) < 0) + t = -t; + else if (krb_lsb_antinet_ulong_less(src->sin_addr.s_addr, + dst->sin_addr.s_addr)==0) + if (krb_lsb_antinet_ushort_less(src->sin_port, dst->sin_port) < 0) + t = -t; + /* + * all that for one tiny bit! Heaven help those that talk to + * themselves. + */ + t = t & 0xffffffff; + return t; +} |