osquery-1/include/osquery/core.h
2014-11-09 00:00:57 -08:00

143 lines
3.8 KiB
C++

// Copyright 2004-present Facebook. All Rights Reserved.
#pragma once
#include <string>
#include <vector>
#include <sqlite3.h>
#include <boost/filesystem.hpp>
#include "osquery/database/results.h"
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.
#ifndef STR
#define STR_OF(x) #x
#define STR(x) STR_OF(x)
#endif
#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 Execute a query
*
* This is a lower-level version of osquery::SQL. Prefer to use osquery::SQL.
*
* @code{.cpp}
* std::string q = "SELECT * FROM time;";
* int i = 0;
* auto qd = query(q, i);
* if (i == 0) {
* for (const auto& each : qd) {
* for (const auto& it : each) {
* LOG(INFO) << it.first << ": " << it.second;
* }
* }
* } else {
* LOG(ERROR) << "Error: " << i;
* }
* @endcode
*
* @param q the query to execute
* @param error_return an int indicating the success or failure of the query
*
* @return the results of the query
*/
osquery::QueryData query(const std::string& q, int& error_return);
/**
* @brief Execute a query on a specific database
*
* If you need to use a different database, other than the osquery default,
* use this method and pass along a pointer to a SQLite3 database. This is
* useful for testing.
*
* @param q the query to execute
* @param error_return an int indicating the success or failure of the query
* @param db the SQLite3 database the execute query q against
*
* @return the results of the query
*/
osquery::QueryData query(const std::string& q, int& error_return, sqlite3* db);
/**
* @brief Return a fully configured sqlite3 database object
*
* An osquery database is basically just a SQLite3 database with several
* virtual tables attached. This method is the main abstraction for creating
* SQLite3 databases within osquery.
*
* @return a SQLite3 database with all virtual tables attached
*/
sqlite3* createDB();
/**
* @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 Split a given string based on an optional deliminator.
*
* If no deliminator 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 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 Return a vector of all home directories on the system
*
* @return a vector of strings representing the path of all home directories
*/
std::vector<boost::filesystem::path> getHomeDirectories();
}