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/*
* UserBackendHome.cpp
*
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UserBackendHome.h"
#include <Core/ConfigEntry.h>
#include <Core/ConfigManager.h>
#include <boost/filesystem.hpp>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
namespace Mad {
namespace Modules {
namespace UserBackendHome {
bool UserBackendHome::handleConfigEntry(const Core::ConfigEntry &entry, bool /*handled*/) {
if(entry[0].getKey().matches("UserManager")) {
if(entry[1].getKey().matches("Skeleton")) {
if(entry[2].empty())
skeleton = entry[1][0];
}
else if(entry[1].getKey().matches("HomeDir")) {
if(entry[2].empty())
homeDir = entry[1][0];
}
else if(entry[1].getKey().matches("UserDirMode")) {
if(entry[2].empty()) {
if(entry[1][0].empty()) {
dirMode = 0755;
}
else {
char *endptr;
unsigned long val = std::strtoul(entry[1][0].c_str(), &endptr, 8);
if(*endptr || val > 07777) {
application->logf(Core::LoggerBase::WARNING, "UserBackendHome: Invalid configuration: DirMode '%s'", entry[1][0].c_str());
}
else {
dirMode = val;
}
}
}
}
else if(!entry[1].empty())
return false;
return true;
}
return false;
}
void UserBackendHome::setOwnerAndCopyMode(const std::string &source, const std::string &dest, const Common::UserInfo &userInfo, bool isSymlink) {
if((isSymlink ? lchown : chown)(dest.c_str(), (uid_t)userInfo.getUid(), (gid_t)userInfo.getGid()) != 0) {
// TODO Error
}
struct stat st;
if((isSymlink ? lstat : stat)(source.c_str(), &st) == 0) {
if((isSymlink ? lchmod : chmod)(dest.c_str(), st.st_mode & (S_IRWXU|S_IRWXG|S_IRWXO)) != 0) {
// TODO Error
}
}
}
void UserBackendHome::migrateOwner(const std::string &path, const Common::UserInfo &oldUserInfo, const Common::UserInfo &userInfo, bool isSymlink) {
struct stat st;
if((isSymlink ? lstat : stat)(path.c_str(), &st) != 0) {
// TODO Error
return;
}
uid_t uid = -1;
gid_t gid = -1;
if(st.st_uid == oldUserInfo.getUid())
uid = (uid_t)userInfo.getUid();
if(st.st_gid == oldUserInfo.getGid())
gid = (gid_t)userInfo.getGid();
if(uid != (uid_t)-1 || gid != (gid_t)-1) {
if((isSymlink ? lchown : chown)(path.c_str(), uid, gid) != 0) {
// TODO Error
}
}
}
void UserBackendHome::addUser(const Common::UserInfo &userInfo) throw(Core::Exception) {
boost::filesystem::path path(homeDir);
path /= userInfo.getUsername();
boost::filesystem::create_directories(path);
std::string nativePath = path.directory_string();
if(chown(nativePath.c_str(), (uid_t)userInfo.getUid(), (gid_t)userInfo.getGid()) != 0) {
// TODO Error
}
if(chmod(nativePath.c_str(), (mode_t)dirMode)) {
// TODO Error
}
boost::filesystem::path skeletonPath(skeleton);
if(!boost::filesystem::is_directory(skeletonPath))
return;
boost::filesystem::path oldPath = boost::filesystem::current_path();
boost::filesystem::current_path(skeletonPath);
boost::filesystem::recursive_directory_iterator end;
for(boost::filesystem::recursive_directory_iterator it("."); it != end; ++it) {
boost::filesystem::path source = it->path();
boost::filesystem::path dest = path / source;
try {
if(boost::filesystem::is_symlink(it->symlink_status())) {
it.no_push();
std::string sourceStr = source.file_string();
char link[PATH_MAX];
int ret = ::readlink(sourceStr.c_str(), link, PATH_MAX);
if(ret <= 0)
continue;
boost::filesystem::create_symlink(boost::filesystem::path(std::string(link, ret)), dest);
setOwnerAndCopyMode(sourceStr, dest.file_string(), userInfo, true);
}
else if(boost::filesystem::is_directory(it->status())) {
boost::filesystem::create_directory(dest);
setOwnerAndCopyMode(source.directory_string(), dest.directory_string(), userInfo, false);
}
else {
boost::filesystem::copy_file(source, dest);
setOwnerAndCopyMode(source.file_string(), dest.file_string(), userInfo, false);
}
}
catch(...) {}
}
boost::filesystem::current_path(oldPath);
}
void UserBackendHome::updateUser(const Common::UserInfo &oldUserInfo, const Common::UserInfo &userInfo) throw(Core::Exception) {
boost::filesystem::path oldPath(homeDir);
oldPath /= oldUserInfo.getUsername();
boost::filesystem::path path(homeDir);
path /= userInfo.getUsername();
if(oldPath != path) {
try {
boost::filesystem::rename(oldPath, path);
}
catch(...) {
return;
}
}
if(oldUserInfo.getUid() == userInfo.getUid() && oldUserInfo.getGid() == userInfo.getGid())
return;
std::string nativePath = path.directory_string();
if(chown(nativePath.c_str(), (uid_t)userInfo.getUid(), (gid_t)userInfo.getGid()) != 0) {
// TODO Error
}
boost::filesystem::recursive_directory_iterator end;
for(boost::filesystem::recursive_directory_iterator it(path); it != end; ++it) {
if(boost::filesystem::is_symlink(it->symlink_status())) {
it.no_push();
migrateOwner(it->path().file_string(), oldUserInfo, userInfo, true);
}
else if(boost::filesystem::is_directory(it->status())) {
migrateOwner(it->path().directory_string(), oldUserInfo, userInfo, false);
}
else {
migrateOwner(it->path().file_string(), oldUserInfo, userInfo, false);
}
}
}
void UserBackendHome::deleteUser(const Common::UserInfo &userInfo) throw(Core::Exception) {
boost::filesystem::path path(homeDir);
path /= userInfo.getUsername();
boost::filesystem::remove_all(path);
}
}
}
}
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