osquery-1/include/osquery/core.h
2015-02-09 12:38:50 -08:00

153 lines
3.6 KiB
C++

/*
* Copyright (c) 2014, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
#pragma once
#include <string>
#include <vector>
#include <osquery/status.h>
#ifndef STR
#define STR_OF(x) #x
#define STR(x) STR_OF(x)
#endif
#ifndef FRIEND_TEST
#define FRIEND_TEST(test_case_name, test_name) \
friend class test_case_name##_##test_name##_Test
#endif
namespace osquery {
/**
* @brief The version of osquery
*/
extern const std::string kVersion;
/// Use a macro for the version literal, set the kVersion symbol in the library.
#define OSQUERY_VERSION STR(OSQUERY_BUILD_VERSION)
/**
* @brief A helpful tool type to report when logging, print help, or debugging.
*/
enum osqueryTool {
OSQUERY_TOOL_SHELL,
OSQUERY_TOOL_DAEMON,
OSQUERY_TOOL_TEST,
};
/**
* @brief Sets up various aspects of osquery execution state.
*
* osquery needs a few things to happen as soon as the executable begins
* executing. initOsquery takes care of setting up the relevant parameters.
* initOsquery should be called in an executable's `main()` function.
*
* @param argc the number of elements in argv
* @param argv the command-line arguments passed to `main()`
*/
void initOsquery(int argc, char* argv[], int tool = OSQUERY_TOOL_TEST);
/**
* @brief Sets up a process as a osquery daemon.
*/
void initOsqueryDaemon();
/**
* @brief Turns of various aspects of osquery such as event loops.
*
*/
void shutdownOsquery();
/**
* @brief Split a given string based on an optional delimiter.
*
* If no delimiter is supplied, the string will be split based on whitespace.
*
* @param s the string that you'd like to split
* @param delim the delimiter which you'd like to split the string by
*
* @return a vector of strings which represent the split string that you
* passed as the s parameter.
*/
std::vector<std::string> split(const std::string& s,
const std::string& delim = "\t ");
/**
* @brief Getter for a host's current hostname
*
* @return a string representing the host's current hostname
*/
std::string getHostname();
/**
* @brief generate a uuid to uniquely identify this machine
*
* @return uuid string to identify this machine
*/
std::string generateHostUuid();
/**
* @brief Getter for the current time, in a human-readable format.
*
* @return the current date/time in the format: "Wed Sep 21 10:27:52 2011"
*/
std::string getAsciiTime();
/**
* @brief Getter for the current unix time.
*
* @return an int representing the amount of seconds since the unix epoch
*/
int getUnixTime();
/**
* @brief Inline helper function for use with utf8StringSize
*/
template <typename _Iterator1, typename _Iterator2>
inline size_t incUtf8StringIterator(_Iterator1& it, const _Iterator2& last) {
if (it == last)
return 0;
unsigned char c;
size_t res = 1;
for (++it; last != it; ++it, ++res) {
c = *it;
if (!(c & 0x80) || ((c & 0xC0) == 0xC0))
break;
}
return res;
}
/**
* @brief Get the length of a UTF-8 string
*
* @param str The UTF-8 string
*
* @return the length of the string
*/
inline size_t utf8StringSize(const std::string& str) {
size_t res = 0;
std::string::const_iterator it = str.begin();
for (; it != str.end(); incUtf8StringIterator(it, str.end()))
res++;
return res;
}
/**
* @brief Create a pid file
*
* @return A status object indicating the success or failure of the operation
*/
Status createPidFile();
}