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Diffstat (limited to 'framework/src/suricata/src/util-cidr.c')
-rw-r--r-- | framework/src/suricata/src/util-cidr.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/framework/src/suricata/src/util-cidr.c b/framework/src/suricata/src/util-cidr.c new file mode 100644 index 00000000..300a4455 --- /dev/null +++ b/framework/src/suricata/src/util-cidr.c @@ -0,0 +1,48 @@ +/* Copyright (C) 2007-2010 Open Information Security Foundation + * + * You can copy, redistribute or modify this Program under the terms of + * the GNU General Public License version 2 as published by the Free + * Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +/** + * \file + * + * \author Victor Julien <victor@inliniac.net> + * + * CIDR utility functions + */ + +#include "suricata-common.h" + +static uint32_t cidrs[33]; + +void CIDRInit(void) +{ + int i = 0; + + /* skip 0 as it will result in 0xffffffff */ + cidrs[0] = 0; + for (i = 1; i < 33; i++) { + cidrs[i] = htonl(0xFFFFFFFF << (32 - i)); + //printf("CIDRInit: cidrs[%02d] = 0x%08X\n", i, cidrs[i]); + } +} + +uint32_t CIDRGet(int cidr) +{ + if (cidr < 0 || cidr > 32) + return 0; + return cidrs[cidr]; +} + |