diff options
Diffstat (limited to 'tdm/cryptocardwatcher/main.cpp')
-rw-r--r-- | tdm/cryptocardwatcher/main.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/tdm/cryptocardwatcher/main.cpp b/tdm/cryptocardwatcher/main.cpp new file mode 100644 index 000000000..5d27ff19b --- /dev/null +++ b/tdm/cryptocardwatcher/main.cpp @@ -0,0 +1,139 @@ +/* + * Copyright 2015 Timothy Pearson <kb9vqf@pearsoncomputing.net> + * + * This file is part of cryptocardwatcher, the TDE Cryptographic Card Session Monitor + * + * cryptocardwatcher is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as + * published by the Free Software Foundation, either version 3 + * of the License, or (at your option) any later version. + * + * cryptocardwatcher 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with cryptocardwatcher. If not, see http://www.gnu.org/licenses/. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <exception> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <sys/file.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/select.h> +#include <sys/time.h> +#include <termios.h> +#include <signal.h> +#include <stdint.h> + +#include <tqobject.h> + +#include <tdeapplication.h> +#include <tdecmdlineargs.h> + +#include <ksslcertificate.h> + +#include <tdehardwaredevices.h> +#include <tdecryptographiccarddevice.h> + +#include "watcher.h" + +int lockfd = -1; +char lockFileName[256]; + +// -------------------------------------------------------------------------------------- +// Useful function from Stack Overflow +// http://stackoverflow.com/questions/1599459/optimal-lock-file-method +// -------------------------------------------------------------------------------------- +int tryGetLock(char const *lockName) { + mode_t m = umask( 0 ); + int fd = open( lockName, O_RDWR|O_CREAT, 0666 ); + umask( m ); + if( fd >= 0 && flock( fd, LOCK_EX | LOCK_NB ) < 0 ) { + close( fd ); + fd = -1; + } + return fd; +} +// -------------------------------------------------------------------------------------- + +// -------------------------------------------------------------------------------------- +// Useful function from Stack Overflow +// http://stackoverflow.com/questions/1599459/optimal-lock-file-method +// -------------------------------------------------------------------------------------- +void releaseLock(int fd, char const *lockName) { + if( fd < 0 ) { + return; + } + remove( lockName ); + close( fd ); +} +// -------------------------------------------------------------------------------------- + +void handle_sigterm(int signum) { + if (lockfd >= 0) { + releaseLock(lockfd, lockFileName); + } + exit(0); +} + +static TDECmdLineOptions options[] = +{ + TDECmdLineLastOption +}; + +int main(int argc, char *argv[]) { + int ret = -1; + + // Register cleanup handlers + struct sigaction action; + memset(&action, 0, sizeof(struct sigaction)); + action.sa_handler = handle_sigterm; + sigaction(SIGTERM, &action, NULL); + + // Ensure only one process is running + sprintf(lockFileName, "/var/lock/cryptocardwatcher.lock"); + lockfd = tryGetLock(lockFileName); + if (lockfd < 0) { + printf ("[cryptocardwatcher] Another instance of this program is already running!\n[cryptocardwatcher] Lockfile detected at '%s'\n", lockFileName); + return -2; + } + + // Parse command line arguments + TDECmdLineArgs::init(argc, argv, "cryptocardwatcher", "cryptocardwatcher", "TDE Cryptographic Card Session Monitor", "0.1"); + TDECmdLineArgs::addCmdLineOptions(options); + TDEApplication::addCmdLineOptions(); + + // Initialize TDE application + TDEApplication tdeapp(false, false); + tdeapp.disableAutoDcopRegistration(); + CardWatcher* watcher = new CardWatcher(); + + // Initialize SmartCard readers + TDEGenericDevice *hwdevice; + TDEHardwareDevices *hwdevices = TDEGlobal::hardwareDevices(); + TDEGenericHardwareList cardReaderList = hwdevices->listByDeviceClass(TDEGenericDeviceType::CryptographicCard); + for (hwdevice = cardReaderList.first(); hwdevice; hwdevice = cardReaderList.next()) { + TDECryptographicCardDevice* cdevice = static_cast<TDECryptographicCardDevice*>(hwdevice); + TQObject::connect(cdevice, TQT_SIGNAL(cardInserted(TDECryptographicCardDevice*)), watcher, TQT_SLOT(cryptographicCardInserted(TDECryptographicCardDevice*))); + TQObject::connect(cdevice, TQT_SIGNAL(cardRemoved(TDECryptographicCardDevice*)), watcher, TQT_SLOT(cryptographicCardRemoved(TDECryptographicCardDevice*))); + cdevice->enableCardMonitoring(true); + } + + // Start TDE application + ret = tdeapp.exec(); + + // Clean up + delete watcher; + + releaseLock(lockfd, lockFileName); + return ret; +} |