200 lines
4.9 KiB
C++
200 lines
4.9 KiB
C++
/**
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* libtransport -- C++ library for easy XMPP Transports development
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*
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* Copyright (C) 2011, Jan Kaluza <hanzz.k@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
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*/
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#include "transport/Util.h"
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#include "transport/Config.h"
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#include <boost/foreach.hpp>
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#include <iostream>
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#include <iterator>
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#include <algorithm>
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#include <boost/filesystem.hpp>
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#include <boost/algorithm/string.hpp>
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#include <boost/numeric/conversion/cast.hpp>
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#ifndef WIN32
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#include "sys/signal.h"
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#include <sys/stat.h>
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#include <pwd.h>
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#include <grp.h>
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#include <sys/resource.h>
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#include "libgen.h"
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#else
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#include <windows.h>
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#include <process.h>
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#define getpid _getpid
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#endif
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using namespace boost::filesystem;
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namespace Transport {
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namespace Util {
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void createDirectories(Transport::Config *config, const boost::filesystem::path& ph) {
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if (ph.empty() || exists(ph)) {
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return;
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}
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// First create branch, by calling ourself recursively
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createDirectories(config, ph.branch_path());
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// Now that parent's path exists, create the directory
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create_directory(ph);
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#ifndef WIN32
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if (!CONFIG_STRING(config, "service.group").empty() && !CONFIG_STRING(config, "service.user").empty()) {
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struct group *gr;
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if ((gr = getgrnam(CONFIG_STRING(config, "service.group").c_str())) == NULL) {
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std::cerr << "Invalid service.group name " << CONFIG_STRING(config, "service.group") << "\n";
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}
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struct passwd *pw;
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if ((pw = getpwnam(CONFIG_STRING(config, "service.user").c_str())) == NULL) {
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std::cerr << "Invalid service.user name " << CONFIG_STRING(config, "service.user") << "\n";
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}
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chown(ph.string().c_str(), pw->pw_uid, gr->gr_gid);
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}
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#endif
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}
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void removeEverythingOlderThan(const std::vector<std::string> &dirs, time_t t) {
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BOOST_FOREACH(const std::string &dir, dirs) {
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path p(dir);
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try {
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if (!exists(p)) {
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continue;
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}
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if (!is_directory(p)) {
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continue;
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}
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directory_iterator end_itr;
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for (directory_iterator itr(p); itr != end_itr; ++itr) {
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if (last_write_time(itr->path()) < t) {
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try {
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if (is_regular(itr->path())) {
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remove(itr->path());
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}
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else if (is_directory(itr->path())) {
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std::vector<std::string> nextDirs;
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nextDirs.push_back(itr->path().string());
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removeEverythingOlderThan(nextDirs, t);
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if (boost::filesystem::is_empty(itr->path())) {
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remove_all(itr->path());
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}
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}
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}
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catch (const filesystem_error& ex) {
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}
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}
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}
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}
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catch (const filesystem_error& ex) {
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}
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}
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}
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int getRandomPort(const std::string &s) {
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unsigned long r = 0;
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BOOST_FOREACH(char c, s) {
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r += (int) c;
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}
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srand(time(NULL) + r);
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return 30000 + rand() % 10000;
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}
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std::string char2hex( char dec )
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{
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char dig1 = (dec&0xF0)>>4;
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char dig2 = (dec&0x0F);
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if ( 0<= dig1 && dig1<= 9) dig1+=48; //0,48 in ascii
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if (10<= dig1 && dig1<=15) dig1+=65-10; //A,65 in ascii
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if ( 0<= dig2 && dig2<= 9) dig2+=48;
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if (10<= dig2 && dig2<=15) dig2+=65-10;
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std::string r;
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r.append( &dig1, 1);
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r.append( &dig2, 1);
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return r;
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}
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std::string urlencode( const std::string &c )
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{
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std::string escaped;
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int max = c.length();
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for(int i=0; i<max; i++)
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{
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if ( (48 <= c[i] && c[i] <= 57) ||//0-9
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(65 <= c[i] && c[i] <= 90) ||//ABC...XYZ
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(97 <= c[i] && c[i] <= 122) || //abc...xyz
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(c[i]=='~' || c[i]=='-' || c[i]=='_' || c[i]=='.')
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)
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{
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escaped.append( &c[i], 1);
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}
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else
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{
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escaped.append("%");
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escaped.append( char2hex(c[i]) );//converts char 255 to string "FF"
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}
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}
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return escaped;
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}
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#ifdef _WIN32
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std::wstring utf8ToUtf16(const std::string& str)
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{
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try
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{
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if (str.empty())
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return L"";
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// First request the size of the required UTF-16 buffer
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int numRequiredBytes = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), boost::numeric_cast<int>(str.size()), NULL, 0);
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if (!numRequiredBytes)
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return L"";
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// Allocate memory for the UTF-16 string
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std::vector<wchar_t> utf16Str(numRequiredBytes);
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int numConverted = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), boost::numeric_cast<int>(str.size()), &utf16Str[0], numRequiredBytes);
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if (!numConverted)
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return L"";
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std::wstring wstr(&utf16Str[0], numConverted);
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return wstr;
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}
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catch (...)
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{
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// I don't believe libtransport is exception-safe so we'll just return an empty string instead
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return L"";
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}
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}
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#endif // _WIN32
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}
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}
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