diff options
Diffstat (limited to 'contrib/isc-dhcp/common/inet.c')
| -rw-r--r-- | contrib/isc-dhcp/common/inet.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/contrib/isc-dhcp/common/inet.c b/contrib/isc-dhcp/common/inet.c deleted file mode 100644 index 53f5869..0000000 --- a/contrib/isc-dhcp/common/inet.c +++ /dev/null @@ -1,233 +0,0 @@ -/* inet.c - - Subroutines to manipulate internet addresses in a safely portable - way... */ - -/* - * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") - * Copyright (c) 1995-2003 by Internet Software Consortium - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT - * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - * - * Internet Systems Consortium, Inc. - * 950 Charter Street - * Redwood City, CA 94063 - * <info@isc.org> - * http://www.isc.org/ - * - * This software has been written for Internet Systems Consortium - * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc. - * To learn more about Internet Systems Consortium, see - * ``http://www.isc.org/''. To learn more about Vixie Enterprises, - * see ``http://www.vix.com''. To learn more about Nominum, Inc., see - * ``http://www.nominum.com''. - */ - -#ifndef lint -static char copyright[] = -"$Id: inet.c,v 1.8.2.5 2004/06/10 17:59:18 dhankins Exp $ Copyright (c) 2004 Internet Systems Consortium. All rights reserved.\n"; -#endif /* not lint */ - -#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; -} - -char *piaddr1 (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; -} - -char *piaddrmask (struct iaddr addr, struct iaddr mask, - const char *file, int line) -{ - char *s, *t; - int i, mw; - unsigned len; - - for (i = 0; i < 32; i++) { - if (!mask.iabuf [3 - i / 8]) - i += 7; - else if (mask.iabuf [3 - i / 8] & (1 << (i % 8))) - break; - } - mw = 32 - i; - len = mw > 9 ? 2 : 1; - len += 4; /* three dots and a slash. */ - for (i = 0; i < (mw / 8) + 1; i++) { - if (addr.iabuf [i] > 99) - len += 3; - else if (addr.iabuf [i] > 9) - len += 2; - else - len++; - } - s = dmalloc (len + 1, file, line); - if (!s) - return s; - t = s; - sprintf (t, "%d", addr.iabuf [0]); - t += strlen (t); - for (i = 1; i < (mw / 8) + 1; i++) { - sprintf (t, ".%d", addr.iabuf [i]); - t += strlen (t); - } - *t++ = '/'; - sprintf (t, "%d", mw); - return s; -} - |
