mirror of
git://git.code.sf.net/p/dhcpd-pools/code
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c3e492165c
[src/dhcpd-pools.c:68]: (style) The scope of the variable 'c' can be reduced. [src/getdata.c:210]: (style) The scope of the variable 'c' can be reduced. [src/hash.c:102]: (style) The scope of the variable 'l' can be reduced. Signed-off-by: Sami Kerola <kerolasa@iki.fi>
110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/*
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* The dhcpd-pools has BSD 2-clause license which also known as "Simplified
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* BSD License" or "FreeBSD License".
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*
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* Copyright 2012- Enno Gröper. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR AND CONTRIBUTORS OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are
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* those of the authors and should not be interpreted as representing
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* official policies, either expressed or implied, of Sami Kerola.
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*/
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/*! \file hash.c
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* \brief The leases hash functions. The hash sorting is key to make
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* analysis happen as quick as possible..
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*/
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#include "dhcpd-pools.h"
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#include "xalloc.h"
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#define HASH_FIND_V6(head, findv6, out) HASH_FIND(hh, head, findv6, 16, out)
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#define HASH_ADD_V6(head, v6field, add) HASH_ADD(hh, head, v6field, 16, add)
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/*! \brief Add a lease to hash array.
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* \param addr Binary IP to be added in leases hash.
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* \param type Lease state of the IP. */
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void add_lease(union ipaddr_t *addr, enum ltype type)
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{
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struct leases_t *l;
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l = xmalloc(sizeof(struct leases_t));
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copy_ipaddr(&l->ip, addr);
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l->type = type;
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if (config.dhcp_version == VERSION_6) {
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HASH_ADD_V6(leases, ip.v6, l);
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} else {
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HASH_ADD_INT(leases, ip.v4, l);
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}
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l->ethernet = NULL;
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}
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/*! \brief Find pointer to lease from hash array.
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* \param addr Binary IP searched from leases hash.
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* \return A lease structure about requested IP, or NULL.
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*/
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struct leases_t *find_lease(union ipaddr_t *addr)
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{
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struct leases_t *l;
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if (config.dhcp_version == VERSION_6) {
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HASH_FIND_V6(leases, &addr->v6, l);
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} else {
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HASH_FIND_INT(leases, &addr->v4, l);
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}
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return l;
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}
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/*! \brief Delete a lease from hash array.
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* \param lease Pointer to lease hash. */
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void delete_lease(struct leases_t *lease)
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{
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free(lease->ethernet);
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HASH_DEL(leases, lease);
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free(lease);
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}
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/*! \brief Delete all leases from hash array. */
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#ifdef HASH_ITER
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void delete_all_leases(void)
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{
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struct leases_t *l, *tmp;
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HASH_ITER(hh, leases, l, tmp) {
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HASH_DEL(leases, l);
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free(l);
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}
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}
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#else
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void delete_all_leases(void)
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{
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while (leases) {
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struct leases_t *l;
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l = leases;
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free(l->ethernet);
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HASH_DEL(leases, l); /* leases advances to next on delete */
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free(l);
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}
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}
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#endif
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