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109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/* Copyright (C) 2014 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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/**
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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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* Get information on running host
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*
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*/
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#include "suricata-common.h"
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#include "config.h"
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#ifndef OS_WIN32
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#include <sys/utsname.h>
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#define VERSION_REGEX "^([0-9]+)\\.([0-9]+)"
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int SCKernelVersionIsAtLeast(int major, int minor)
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{
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struct utsname kuname;
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pcre *version_regex;
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pcre_extra *version_regex_study;
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const char *eb;
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int opts = 0;
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int eo;
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#define MAX_SUBSTRINGS 3 * 6
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int ov[MAX_SUBSTRINGS];
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int ret;
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int kmajor, kminor;
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const char **list;
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/* get local version */
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if (uname(&kuname) != 0) {
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SCLogError(SC_ERR_INVALID_VALUE, "Invalid uname return: %s",
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strerror(errno));
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return 0;
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}
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SCLogDebug("Kernel release is '%s'", kuname.release);
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version_regex = pcre_compile(VERSION_REGEX, opts, &eb, &eo, NULL);
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if (version_regex == NULL) {
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SCLogError(SC_ERR_PCRE_COMPILE, "pcre compile of \"%s\" failed at offset %" PRId32 ": %s", VERSION_REGEX, eo, eb);
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goto error;
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}
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version_regex_study = pcre_study(version_regex, 0, &eb);
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if (eb != NULL) {
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SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed: %s", eb);
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goto error;
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}
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ret = pcre_exec(version_regex, version_regex_study, kuname.release,
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strlen(kuname.release), 0, 0, ov, MAX_SUBSTRINGS);
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if (ret < 0) {
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SCLogError(SC_ERR_PCRE_MATCH, "Version did not cut");
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goto error;
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}
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if (ret < 3) {
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SCLogError(SC_ERR_PCRE_MATCH, "Version major and minor not found (ret %d)", ret);
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goto error;
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}
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pcre_get_substring_list(kuname.release, ov, ret, &list);
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kmajor = atoi(list[1]);
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kminor = atoi(list[2]);
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pcre_free_substring_list(list);
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pcre_free_study(version_regex_study);
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pcre_free(version_regex);
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if (kmajor > major)
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return 1;
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if (kmajor == major && kminor >= minor)
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return 1;
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error:
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return 0;
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}
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#else /* OS_WIN32 */
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int SCKernelVersionIsAtLeast(int major, int minor)
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{
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SCLogError(SC_ERR_NOT_SUPPORTED, "OS compare is not supported on Windows");
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return 0;
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}
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#endif /* OS_WIN32 */
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