mirror of https://github.com/Icinga/icinga2.git
787 lines
18 KiB
C++
787 lines
18 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2013 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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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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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/utility.h"
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#include "base/convert.h"
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#include "base/application.h"
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#include "base/logger_fwd.h"
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#include "base/exception.h"
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#include <mmatch.h>
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#include <boost/lexical_cast.hpp>
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#include <boost/function.hpp>
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#include <boost/foreach.hpp>
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#include <boost/algorithm/string/split.hpp>
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#include <boost/algorithm/string/classification.hpp>
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#ifdef __FreeBSD__
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# include <pthread_np.h>
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#endif /* __FreeBSD__ */
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#ifndef _MSC_VER
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# include <cxxabi.h>
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#endif /* _MSC_VER */
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using namespace icinga;
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boost::thread_specific_ptr<String> Utility::m_ThreadName;
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boost::thread_specific_ptr<unsigned int> Utility::m_RandSeed;
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/**
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* Demangles a symbol name.
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*
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* @param sym The symbol name.
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* @returns A human-readable version of the symbol name.
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*/
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String Utility::DemangleSymbolName(const String& sym)
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{
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String result = sym;
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#ifndef _MSC_VER
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int status;
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char *realname = abi::__cxa_demangle(sym.CStr(), 0, 0, &status);
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if (realname != NULL) {
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result = String(realname);
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free(realname);
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}
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#else /* _MSC_VER */
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CHAR output[256];
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if (UnDecorateSymbolName(sym.CStr(), output, sizeof(output), UNDNAME_COMPLETE) > 0)
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result = output;
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#endif /* _MSC_VER */
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return result;
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}
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/**
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* Returns a human-readable type name of a type_info object.
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*
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* @param ti A type_info object.
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* @returns The type name of the object.
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*/
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String Utility::GetTypeName(const std::type_info& ti)
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{
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return DemangleSymbolName(ti.name());
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}
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/**
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* Performs wildcard pattern matching.
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*
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* @param pattern The wildcard pattern.
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* @param text The String that should be checked.
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* @returns true if the wildcard pattern matches, false otherwise.
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*/
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bool Utility::Match(const String& pattern, const String& text)
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{
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return (match(pattern.CStr(), text.CStr()) == 0);
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}
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/**
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* Returns the directory component of a path. See dirname(3) for details.
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*
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* @param path The full path.
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* @returns The directory.
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*/
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String Utility::DirName(const String& path)
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{
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char *dir;
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#ifdef _WIN32
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String dupPath = path;
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/* PathRemoveFileSpec doesn't properly handle forward slashes. */
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BOOST_FOREACH(char& ch, dupPath) {
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if (ch == '/')
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ch = '\\';
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}
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dir = strdup(dupPath.CStr());
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#else /* _WIN32 */
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dir = strdup(path.CStr());
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#endif /* _WIN32 */
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if (dir == NULL)
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BOOST_THROW_EXCEPTION(std::bad_alloc());
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String result;
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#ifndef _WIN32
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result = dirname(dir);
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#else /* _WIN32 */
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if (!PathRemoveFileSpec(dir)) {
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free(dir);
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BOOST_THROW_EXCEPTION(win32_error()
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<< boost::errinfo_api_function("PathRemoveFileSpec")
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<< errinfo_win32_error(GetLastError()));
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}
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result = dir;
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if (result.IsEmpty())
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result = ".";
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#endif /* _WIN32 */
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free(dir);
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return result;
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}
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/**
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* Returns the file component of a path. See basename(3) for details.
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*
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* @param path The full path.
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* @returns The filename.
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*/
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String Utility::BaseName(const String& path)
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{
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char *dir = strdup(path.CStr());
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String result;
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if (dir == NULL)
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BOOST_THROW_EXCEPTION(std::bad_alloc());
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#ifndef _WIN32
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result = basename(dir);
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#else /* _WIN32 */
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result = PathFindFileName(dir);
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#endif /* _WIN32 */
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free(dir);
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return result;
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}
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/**
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* Null deleter. Used as a parameter for the shared_ptr constructor.
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*
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* @param - The object that should be deleted.
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*/
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void Utility::NullDeleter(void *)
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{
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/* Nothing to do here. */
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}
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/**
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* Returns the current UNIX timestamp including fractions of seconds.
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*
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* @returns The current time.
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*/
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double Utility::GetTime(void)
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{
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#ifdef _WIN32
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FILETIME cft;
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GetSystemTimeAsFileTime(&cft);
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ULARGE_INTEGER ucft;
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ucft.HighPart = cft.dwHighDateTime;
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ucft.LowPart = cft.dwLowDateTime;
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SYSTEMTIME est = { 1970, 1, 4, 1, 0, 0, 0, 0};
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FILETIME eft;
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SystemTimeToFileTime(&est, &eft);
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ULARGE_INTEGER ueft;
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ueft.HighPart = eft.dwHighDateTime;
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ueft.LowPart = eft.dwLowDateTime;
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return ((ucft.QuadPart - ueft.QuadPart) / 10000) / 1000.0;
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#else /* _WIN32 */
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struct timeval tv;
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if (gettimeofday(&tv, NULL) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("gettimeofday")
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<< boost::errinfo_errno(errno));
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}
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return tv.tv_sec + tv.tv_usec / 1000000.0;
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#endif /* _WIN32 */
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}
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/**
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* Returns the ID of the current process.
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*
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* @returns The PID.
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*/
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pid_t Utility::GetPid(void)
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{
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#ifndef _WIN32
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return getpid();
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#else /* _WIN32 */
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return GetCurrentProcessId();
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#endif /* _WIN32 */
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}
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/**
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* Sleeps for the specified amount of time.
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*
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* @param timeout The timeout in seconds.
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*/
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void Utility::Sleep(double timeout)
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{
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#ifndef _WIN32
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usleep(timeout * 1000 * 1000);
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#else /* _WIN32 */
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::Sleep(timeout * 1000);
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#endif /* _WIN32 */
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}
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/**
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* Loads the specified library.
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*
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* @param library The name of the library.
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*/
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#ifdef _WIN32
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HMODULE
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#else /* _WIN32 */
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void *
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#endif /* _WIN32 */
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Utility::LoadExtensionLibrary(const String& library)
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{
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String path;
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#if defined(_WIN32)
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path = library + ".dll";
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#elif defined(__APPLE__)
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path = "lib" + library + ".dylib";
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#else /* __APPLE__ */
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path = "lib" + library + ".so";
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#endif /* _WIN32 */
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Log(LogInformation, "base", "Loading library '" + path + "'");
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#ifdef _WIN32
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HMODULE hModule = LoadLibrary(path.CStr());
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if (hModule == NULL) {
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BOOST_THROW_EXCEPTION(win32_error()
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<< boost::errinfo_api_function("LoadLibrary")
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<< errinfo_win32_error(GetLastError())
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<< boost::errinfo_file_name(path));
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}
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#else /* _WIN32 */
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void *hModule = dlopen(path.CStr(), RTLD_NOW);
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if (hModule == NULL) {
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BOOST_THROW_EXCEPTION(std::runtime_error("Could not load library '" + path + "': " + dlerror()));
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}
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#endif /* _WIN32 */
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return hModule;
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}
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/**
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* Generates a new unique ID.
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*
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* @returns The new unique ID.
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*/
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String Utility::NewUniqueID(void)
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{
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static boost::mutex mutex;
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static int next_id = 0;
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/* I'd much rather use UUIDs but RHEL is way too cool to have
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* a semi-recent version of boost. Yay. */
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String id;
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char buf[128];
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if (gethostname(buf, sizeof(buf)) == 0)
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id = String(buf) + "-";
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id += Convert::ToString((long)Utility::GetTime()) + "-";
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{
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boost::mutex::scoped_lock lock(mutex);
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id += Convert::ToString(next_id);
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next_id++;
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}
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return id;
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}
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/**
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* Calls the specified callback for each file matching the path specification.
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*
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* @param pathSpec The path specification.
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* @param callback The callback which is invoked for each matching file.
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* @param type The file type (a combination of GlobFile and GlobDirectory)
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*/
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bool Utility::Glob(const String& pathSpec, const boost::function<void (const String&)>& callback, int type)
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{
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#ifdef _WIN32
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HANDLE handle;
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WIN32_FIND_DATA wfd;
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handle = FindFirstFile(pathSpec.CStr(), &wfd);
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if (handle == INVALID_HANDLE_VALUE) {
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DWORD errorCode = GetLastError();
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if (errorCode == ERROR_FILE_NOT_FOUND)
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return false;
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BOOST_THROW_EXCEPTION(win32_error()
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<< boost::errinfo_api_function("FindFirstFile")
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<< errinfo_win32_error(errorCode)
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<< boost::errinfo_file_name(pathSpec));
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}
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do {
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if ((wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && !(type & GlobDirectory))
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continue;
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if (!(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && !(type & GlobFile))
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continue;
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callback(DirName(pathSpec) + "/" + wfd.cFileName);
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} while (FindNextFile(handle, &wfd));
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if (!FindClose(handle)) {
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BOOST_THROW_EXCEPTION(win32_error()
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<< boost::errinfo_api_function("FindClose")
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<< errinfo_win32_error(GetLastError()));
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}
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return true;
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#else /* _WIN32 */
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glob_t gr;
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int rc = glob(pathSpec.CStr(), GLOB_ERR | GLOB_NOSORT, NULL, &gr);
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if (rc < 0) {
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if (rc == GLOB_NOMATCH)
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return false;
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("glob")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(pathSpec));
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}
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if (gr.gl_pathc == 0) {
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globfree(&gr);
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return false;
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}
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size_t left;
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char **gp;
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for (gp = gr.gl_pathv, left = gr.gl_pathc; left > 0; gp++, left--) {
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struct stat statbuf;
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if (stat(*gp, &statbuf) < 0)
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("stat")
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<< boost::errinfo_errno(errno));
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if (!S_ISDIR(statbuf.st_mode) && !S_ISREG(statbuf.st_mode))
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continue;
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if (S_ISDIR(statbuf.st_mode) && !(type & GlobDirectory))
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continue;
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if (!S_ISDIR(statbuf.st_mode) && !(type & GlobFile))
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continue;
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callback(*gp);
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}
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globfree(&gr);
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return true;
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#endif /* _WIN32 */
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}
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/**
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* Calls the specified callback for each file in the specified directory
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* or any of its child directories if the file name matches the specified
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* pattern.
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*
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* @param path The path.
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* @param pattern The pattern.
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* @param callback The callback which is invoked for each matching file.
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* @param type The file type (a combination of GlobFile and GlobDirectory)
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*/
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bool Utility::GlobRecursive(const String& path, const String& pattern, const boost::function<void (const String&)>& callback, int type)
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{
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#ifdef _WIN32
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HANDLE handle;
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WIN32_FIND_DATA wfd;
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String pathSpec = path + "/*";
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handle = FindFirstFile(pathSpec.CStr(), &wfd);
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if (handle == INVALID_HANDLE_VALUE) {
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DWORD errorCode = GetLastError();
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if (errorCode == ERROR_FILE_NOT_FOUND)
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return false;
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BOOST_THROW_EXCEPTION(win32_error()
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<< boost::errinfo_api_function("FindFirstFile")
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<< errinfo_win32_error(errorCode)
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<< boost::errinfo_file_name(pathSpec));
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}
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do {
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String cpath = path + "/" + wfd.cFileName;
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if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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GlobRecursive(cpath, pattern, callback, type);
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if ((wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && !(type & GlobDirectory))
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continue;
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if (!(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) && !(type & GlobFile))
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continue;
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if (!Utility::Match(pattern, wfd.cFileName))
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continue;
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callback(cpath);
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} while (FindNextFile(handle, &wfd));
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if (!FindClose(handle)) {
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BOOST_THROW_EXCEPTION(win32_error()
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|
<< boost::errinfo_api_function("FindClose")
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<< errinfo_win32_error(GetLastError()));
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}
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#else /* _WIN32 */
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DIR *dirp;
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dirp = opendir(path.CStr());
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if (dirp == NULL)
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("opendir")
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<< boost::errinfo_errno(errno));
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while (dirp) {
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dirent ent, *pent;
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if (readdir_r(dirp, &ent, &pent) < 0)
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("readdir_r")
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<< boost::errinfo_errno(errno));
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|
|
|
if (!pent)
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break;
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if (strcmp(ent.d_name, ".") == 0 || strcmp(ent.d_name, "..") == 0)
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continue;
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|
String cpath = path + "/" + ent.d_name;
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|
struct stat statbuf;
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|
|
|
if (lstat(cpath.CStr(), &statbuf) < 0)
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BOOST_THROW_EXCEPTION(posix_error()
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|
<< boost::errinfo_api_function("lstat")
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|
<< boost::errinfo_errno(errno));
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|
|
|
if (S_ISDIR(statbuf.st_mode))
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GlobRecursive(cpath, pattern, callback, type);
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|
|
if (stat(cpath.CStr(), &statbuf) < 0)
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|
BOOST_THROW_EXCEPTION(posix_error()
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|
<< boost::errinfo_api_function("stat")
|
|
<< boost::errinfo_errno(errno));
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|
|
|
if (!S_ISDIR(statbuf.st_mode) && !S_ISREG(statbuf.st_mode))
|
|
continue;
|
|
|
|
if (S_ISDIR(statbuf.st_mode) && !(type & GlobDirectory))
|
|
continue;
|
|
|
|
if (!S_ISDIR(statbuf.st_mode) && !(type & GlobFile))
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|
continue;
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|
|
|
if (!Utility::Match(pattern, ent.d_name))
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continue;
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|
callback(cpath);
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|
}
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|
#endif /* _WIN32 */
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|
return true;
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|
}
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|
|
#ifndef _WIN32
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|
void Utility::SetNonBlocking(int fd)
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|
{
|
|
int flags = fcntl(fd, F_GETFL, 0);
|
|
|
|
if (flags < 0) {
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|
BOOST_THROW_EXCEPTION(posix_error()
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|
<< boost::errinfo_api_function("fcntl")
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<< boost::errinfo_errno(errno));
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|
}
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|
|
|
if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
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|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("fcntl")
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|
<< boost::errinfo_errno(errno));
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|
}
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|
}
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|
|
void Utility::SetCloExec(int fd)
|
|
{
|
|
int flags = fcntl(fd, F_GETFD, 0);
|
|
|
|
if (flags < 0) {
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|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("fcntl")
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|
<< boost::errinfo_errno(errno));
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|
}
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|
|
|
if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0) {
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|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("fcntl")
|
|
<< boost::errinfo_errno(errno));
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|
}
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|
}
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|
#endif /* _WIN32 */
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|
|
|
void Utility::SetNonBlockingSocket(SOCKET s)
|
|
{
|
|
#ifndef _WIN32
|
|
SetNonBlocking(s);
|
|
#else /* _WIN32 */
|
|
unsigned long lTrue = 1;
|
|
ioctlsocket(s, FIONBIO, &lTrue);
|
|
#endif /* _WIN32 */
|
|
}
|
|
|
|
void Utility::QueueAsyncCallback(const boost::function<void (void)>& callback)
|
|
{
|
|
Application::GetTP().Post(callback);
|
|
}
|
|
|
|
String Utility::FormatDateTime(const char *format, double ts)
|
|
{
|
|
char timestamp[128];
|
|
time_t tempts = (time_t)ts; /* We don't handle sub-second timestamps here just yet. */
|
|
tm tmthen;
|
|
|
|
#ifdef _MSC_VER
|
|
tm *temp = localtime(&tempts);
|
|
|
|
if (temp == NULL) {
|
|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("localtime")
|
|
<< boost::errinfo_errno(errno));
|
|
}
|
|
|
|
tmthen = *temp;
|
|
#else /* _MSC_VER */
|
|
if (localtime_r(&tempts, &tmthen) == NULL) {
|
|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("localtime_r")
|
|
<< boost::errinfo_errno(errno));
|
|
}
|
|
#endif /* _MSC_VER */
|
|
|
|
strftime(timestamp, sizeof(timestamp), format, &tmthen);
|
|
|
|
return timestamp;
|
|
}
|
|
|
|
String Utility::EscapeShellCmd(const String& s)
|
|
{
|
|
String result;
|
|
size_t prev_quote = String::NPos;
|
|
int index = -1;
|
|
|
|
BOOST_FOREACH(char ch, s) {
|
|
bool escape = false;
|
|
|
|
index++;
|
|
|
|
#ifdef _WIN32
|
|
if (ch == '%' || ch == '"' || ch == '\'')
|
|
escape = true;
|
|
#else /* _WIN32 */
|
|
if (ch == '"' || ch == '\'') {
|
|
/* Find a matching closing quotation character. */
|
|
if (prev_quote == String::NPos && (prev_quote = s.FindFirstOf(ch, index + 1)) != String::NPos)
|
|
; /* Empty statement. */
|
|
else if (prev_quote != String::NPos && s[prev_quote] == ch)
|
|
prev_quote = String::NPos;
|
|
else
|
|
escape = true;
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
if (ch == '#' || ch == '&' || ch == ';' || ch == '`' || ch == '|' ||
|
|
ch == '*' || ch == '?' || ch == '~' || ch == '<' || ch == '>' ||
|
|
ch == '^' || ch == '(' || ch == ')' || ch == '[' || ch == ']' ||
|
|
ch == '{' || ch == '}' || ch == '$' || ch == '\\' || ch == '\x0A' ||
|
|
ch == '\xFF')
|
|
escape = true;
|
|
|
|
if (escape)
|
|
#ifdef _WIN32
|
|
result += '^';
|
|
#else /* _WIN32 */
|
|
result += '\\';
|
|
#endif /* _WIN32 */
|
|
|
|
result += ch;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
static void WindowsSetThreadName(const char *name)
|
|
{
|
|
THREADNAME_INFO info;
|
|
info.dwType = 0x1000;
|
|
info.szName = name;
|
|
info.dwThreadID = -1;
|
|
info.dwFlags = 0;
|
|
|
|
__try {
|
|
RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), (ULONG_PTR *)&info);
|
|
} __except(EXCEPTION_EXECUTE_HANDLER) {
|
|
/* Nothing to do here. */
|
|
}
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
void Utility::SetThreadName(const String& name, bool os)
|
|
{
|
|
m_ThreadName.reset(new String(name));
|
|
|
|
if (!os)
|
|
return;
|
|
|
|
#ifdef _WIN32
|
|
WindowsSetThreadName(name.CStr());
|
|
#endif /* _WIN32 */
|
|
|
|
#ifdef HAVE_PTHREAD_SET_NAME_NP
|
|
pthread_set_name_np(pthread_self(), name.CStr());
|
|
#endif /* HAVE_PTHREAD_SET_NAME_NP */
|
|
|
|
#ifdef HAVE_PTHREAD_SETNAME_NP
|
|
# ifdef __APPLE__
|
|
pthread_setname_np(name.CStr());
|
|
# else /* __APPLE__ */
|
|
String tname = name.SubStr(0, 15);
|
|
pthread_setname_np(pthread_self(), tname.CStr());
|
|
# endif /* __APPLE__ */
|
|
#endif /* HAVE_PTHREAD_SETNAME_NP */
|
|
}
|
|
|
|
String Utility::GetThreadName(void)
|
|
{
|
|
String *name = m_ThreadName.get();
|
|
|
|
if (!name) {
|
|
std::ostringstream idbuf;
|
|
idbuf << boost::this_thread::get_id();
|
|
return idbuf.str();
|
|
}
|
|
|
|
return *name;
|
|
}
|
|
|
|
unsigned long Utility::SDBM(const String& str, size_t len)
|
|
{
|
|
unsigned long hash = 0;
|
|
size_t current = 0;
|
|
|
|
BOOST_FOREACH(char c, str) {
|
|
if (current >= len)
|
|
break;
|
|
|
|
hash = c + (hash << 6) + (hash << 16) - hash;
|
|
|
|
current++;
|
|
}
|
|
|
|
return hash;
|
|
}
|
|
|
|
int Utility::CompareVersion(const String& v1, const String& v2)
|
|
{
|
|
std::vector<String> tokensv1, tokensv2;
|
|
boost::algorithm::split(tokensv1, v1, boost::is_any_of("."));
|
|
boost::algorithm::split(tokensv2, v2, boost::is_any_of("."));
|
|
|
|
for (int i = 0; i < tokensv2.size() - tokensv1.size(); i++)
|
|
tokensv1.push_back("0");
|
|
|
|
for (int i = 0; i < tokensv1.size() - tokensv2.size(); i++)
|
|
tokensv2.push_back("0");
|
|
|
|
for (size_t i = 0; i < tokensv1.size(); i++) {
|
|
if (Convert::ToLong(tokensv2[i]) > Convert::ToLong(tokensv1[i]))
|
|
return 1;
|
|
else if (Convert::ToLong(tokensv2[i]) < Convert::ToLong(tokensv1[i]))
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int Utility::Random(void)
|
|
{
|
|
#ifdef _WIN32
|
|
return rand();
|
|
#else /* _WIN32 */
|
|
unsigned int *seed = m_RandSeed.get();
|
|
|
|
if (!seed) {
|
|
seed = new unsigned int(Utility::GetTime());
|
|
m_RandSeed.reset(seed);
|
|
}
|
|
|
|
return rand_r(seed);
|
|
#endif /* _WIN32 */
|
|
}
|
|
|
|
tm Utility::LocalTime(time_t ts)
|
|
{
|
|
#ifdef _MSC_VER
|
|
tm *result = localtime(&ts);
|
|
|
|
if (result == NULL) {
|
|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("localtime")
|
|
<< boost::errinfo_errno(errno));
|
|
}
|
|
|
|
return *result;
|
|
#else /* _MSC_VER */
|
|
tm result;
|
|
|
|
if (localtime_r(&ts, &result) == NULL) {
|
|
BOOST_THROW_EXCEPTION(posix_error()
|
|
<< boost::errinfo_api_function("localtime_r")
|
|
<< boost::errinfo_errno(errno));
|
|
}
|
|
|
|
return result;
|
|
#endif /* _MSC_VER */
|
|
}
|