mirror of
https://github.com/valitydev/osquery-1.git
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80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
/*
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* Copyright (c) 2014, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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#include <fstream>
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#include <boost/algorithm/string/split.hpp>
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#include <boost/algorithm/string/trim.hpp>
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#include <osquery/tables.h>
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#include <osquery/filesystem.h>
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#include <osquery/logger.h>
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namespace osquery {
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namespace tables {
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const std::string kLinuxArpTable = "/proc/net/arp";
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QueryData genArpCache(QueryContext& context) {
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QueryData results;
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boost::filesystem::path arp_path = kLinuxArpTable;
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if (!osquery::isReadable(arp_path).ok()) {
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VLOG(1) << "Cannot read arp table.";
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return results;
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}
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std::ifstream fd(arp_path.string(), std::ios::in | std::ios::binary);
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std::string line;
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if (fd.fail() || fd.eof()) {
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VLOG(1) << "Empty or failed arp table.";
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return results;
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}
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// Read the header line.
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std::getline(fd, line, '\n');
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while (!(fd.fail() || fd.eof())) {
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std::getline(fd, line, '\n');
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// IP address, HW type, Flags, HW address, Mask Device
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std::vector<std::string> fields;
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boost::split(fields, line, boost::is_any_of(" "), boost::token_compress_on);
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for (auto& f : fields) {
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// Inline trim each split.
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boost::trim(f);
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}
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if (fields.size() != 6) {
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// An unhandled error case.
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continue;
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}
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Row r;
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r["address"] = fields[0];
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r["mac"] = fields[3];
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r["interface"] = fields[5];
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// Note: it's also possible to detect publish entries (ATF_PUB).
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if (fields[2] == "0x6") {
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// The string representation of ATF_COM | ATF_PERM.
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r["permanent"] = "1";
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} else {
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r["permanent"] = "0";
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}
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results.push_back(r);
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}
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return results;
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}
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}
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}
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