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154 lines
3.4 KiB
C
154 lines
3.4 KiB
C
/* Copyright (C) 2011-2012 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include "suricata-common.h"
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#include "conf.h"
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#include "util-device.h"
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/**
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* \file
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*
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* \author Eric Leblond <eric@regit.org>
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*
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* \brief Utility functions to handle device list
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*/
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/** private device list */
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static TAILQ_HEAD(, LiveDevice_) live_devices =
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TAILQ_HEAD_INITIALIZER(live_devices);
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/**
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* \brief Add a pcap device for monitoring
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*
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* \param dev string with the device name
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*
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* \retval 0 on success.
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* \retval -1 on failure.
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*/
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int LiveRegisterDevice(char *dev)
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{
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LiveDevice *pd = SCMalloc(sizeof(LiveDevice));
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if (pd == NULL) {
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return -1;
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}
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pd->dev = SCStrdup(dev);
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SC_ATOMIC_INIT(pd->pkts);
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SC_ATOMIC_INIT(pd->invalid_checksums);
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pd->ignore_checksum = 0;
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TAILQ_INSERT_TAIL(&live_devices, pd, next);
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SCLogDebug("Pcap device \"%s\" registered.", dev);
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return 0;
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}
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/**
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* \brief Get the number of registered devices
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*
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* \retval cnt the number of registered devices
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*/
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int LiveGetDeviceCount(void) {
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int i = 0;
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LiveDevice *pd;
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TAILQ_FOREACH(pd, &live_devices, next) {
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i++;
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}
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return i;
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}
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/**
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* \brief Get a pointer to the device name at idx
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*
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* \param number idx of the device in our list
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*
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* \retval ptr pointer to the string containing the device
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* \retval NULL on error
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*/
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char *LiveGetDeviceName(int number) {
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int i = 0;
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LiveDevice *pd;
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TAILQ_FOREACH(pd, &live_devices, next) {
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if (i == number) {
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return pd->dev;
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}
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i++;
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}
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return NULL;
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}
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/**
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* \brief Get a pointer to the device at idx
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*
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* \param number idx of the device in our list
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*
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* \retval ptr pointer to the string containing the device
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* \retval NULL on error
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*/
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LiveDevice *LiveGetDevice(char *name) {
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int i = 0;
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LiveDevice *pd;
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if (name == NULL) {
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SCLogWarning(SC_ERR_INVALID_VALUE, "Name of device should not be null");
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return NULL;
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}
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TAILQ_FOREACH(pd, &live_devices, next) {
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if (!strcmp(name, pd->dev)) {
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return pd;
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}
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i++;
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}
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return NULL;
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}
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int LiveBuildDeviceList(char * runmode)
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{
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ConfNode *base = ConfGetNode(runmode);
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ConfNode *child;
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int i = 0;
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if (base == NULL)
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return 0;
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TAILQ_FOREACH(child, &base->head, next) {
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if (!strncmp(child->val, "interface", sizeof(child->val))) {
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ConfNode *subchild;
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TAILQ_FOREACH(subchild, &child->head, next) {
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if ((!strcmp(subchild->name, "interface"))) {
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SCLogInfo("Adding interface %s from config file",
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subchild->val);
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LiveRegisterDevice(subchild->val);
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i++;
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}
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}
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}
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}
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return i;
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}
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