diff options
Diffstat (limited to 'contrib/isc-dhcp/common/inet.c')
| -rw-r--r-- | contrib/isc-dhcp/common/inet.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/contrib/isc-dhcp/common/inet.c b/contrib/isc-dhcp/common/inet.c deleted file mode 100644 index b7c4ba438480..000000000000 --- a/contrib/isc-dhcp/common/inet.c +++ /dev/null @@ -1,178 +0,0 @@ -/* inet.c - - Subroutines to manipulate internet addresses in a safely portable - way... */ - -/* - * Copyright (c) 1996 The Internet Software Consortium. 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 Internet Software Consortium 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 INTERNET SOFTWARE CONSORTIUM 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 INTERNET SOFTWARE CONSORTIUM 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. - * - * This software has been written for the Internet Software Consortium - * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie - * Enterprises. To learn more about the Internet Software Consortium, - * see ``http://www.vix.com/isc''. To learn more about Vixie - * Enterprises, see ``http://www.vix.com''. - */ - -#include "dhcpd.h" - -/* Return just the network number of an internet address... */ - -struct iaddr subnet_number (addr, mask) - struct iaddr addr; - struct iaddr mask; -{ - int i; - struct iaddr rv; - - rv.len = 0; - - /* Both addresses must have the same length... */ - if (addr.len != mask.len) - return rv; - - rv.len = addr.len; - for (i = 0; i < rv.len; i++) - rv.iabuf [i] = addr.iabuf [i] & mask.iabuf [i]; - return rv; -} - -/* Combine a network number and a integer to produce an internet address. - This won't work for subnets with more than 32 bits of host address, but - maybe this isn't a problem. */ - -struct iaddr ip_addr (subnet, mask, host_address) - struct iaddr subnet; - struct iaddr mask; - u_int32_t host_address; -{ - int i, j, k; - u_int32_t swaddr; - struct iaddr rv; - unsigned char habuf [sizeof swaddr]; - - swaddr = htonl (host_address); - memcpy (habuf, &swaddr, sizeof swaddr); - - /* Combine the subnet address and the host address. If - the host address is bigger than can fit in the subnet, - return a zero-length iaddr structure. */ - rv = subnet; - j = rv.len - sizeof habuf; - for (i = sizeof habuf - 1; i >= 0; i--) { - if (mask.iabuf [i + j]) { - if (habuf [i] > (mask.iabuf [i + j] ^ 0xFF)) { - rv.len = 0; - return rv; - } - for (k = i - 1; k >= 0; k--) { - if (habuf [k]) { - rv.len = 0; - return rv; - } - } - rv.iabuf [i + j] |= habuf [i]; - break; - } else - rv.iabuf [i + j] = habuf [i]; - } - - return rv; -} - -/* Given a subnet number and netmask, return the address on that subnet - for which the host portion of the address is all ones (the standard - broadcast address). */ - -struct iaddr broadcast_addr (subnet, mask) - struct iaddr subnet; - struct iaddr mask; -{ - int i, j, k; - struct iaddr rv; - - if (subnet.len != mask.len) { - rv.len = 0; - return rv; - } - - for (i = 0; i < subnet.len; i++) { - rv.iabuf [i] = subnet.iabuf [i] | (~mask.iabuf [i] & 255); - } - rv.len = subnet.len; - - return rv; -} - -u_int32_t host_addr (addr, mask) - struct iaddr addr; - struct iaddr mask; -{ - int i; - u_int32_t swaddr; - struct iaddr rv; - - rv.len = 0; - - /* Mask out the network bits... */ - rv.len = addr.len; - for (i = 0; i < rv.len; i++) - rv.iabuf [i] = addr.iabuf [i] & ~mask.iabuf [i]; - - /* Copy out up to 32 bits... */ - memcpy (&swaddr, &rv.iabuf [rv.len - sizeof swaddr], sizeof swaddr); - - /* Swap it and return it. */ - return ntohl (swaddr); -} - -int addr_eq (addr1, addr2) - struct iaddr addr1, addr2; -{ - if (addr1.len != addr2.len) - return 0; - return memcmp (addr1.iabuf, addr2.iabuf, addr1.len) == 0; -} - -char *piaddr (addr) - struct iaddr addr; -{ - static char pbuf [4 * 16]; - char *s = pbuf; - int i; - - if (addr.len == 0) { - strcpy (s, "<null address>"); - } - for (i = 0; i < addr.len; i++) { - sprintf (s, "%s%d", i ? "." : "", addr.iabuf [i]); - s += strlen (s); - } - return pbuf; -} |