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INCLUDES= $(all_includes) $(KDE_INCLUDES)/tde
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bin_PROGRAMS = tdeldapcertupdater
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tdeldapcertupdater_SOURCES = main.cpp
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tdeldapcertupdater_METASOURCES = AUTO
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tdeldapcertupdater_LDFLAGS = $(all_libraries) $(KDE_RPATH) $(LIB_QT) -lDCOP $(LIB_TDECORE) $(LIB_TDEUI) -ltdefx $(LIB_KIO) -ltdetexteditor -ltdeldap
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KDE_OPTIONS = nofinal
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/***************************************************************************
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* Copyright (C) 2013 by Timothy Pearson *
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* kb9vqf@pearsoncomputing.net *
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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 *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdlib.h>
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#include <csignal>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <tdeapplication.h>
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#include <tdestartupinfo.h>
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#include <tdecmdlineargs.h>
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#include <tdeaboutdata.h>
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#include <ksimpleconfig.h>
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#include <tqdatetime.h>
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#include <tqfile.h>
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#include <tqdir.h>
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#include <libtdeldap.h>
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// FIXME
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// Connect this to CMake/Automake
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#define KDE_CONFDIR "/etc/trinity"
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static const char description[] =
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I18N_NOOP("TDE utility for updating realm certificates");
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static const char version[] = "v0.0.1";
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bool received_sighup = false;
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void signalHandler(int signum)
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{
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printf("[INFO] Got signal %d\n\r", signum);
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if (signum == SIGHUP) {
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received_sighup = true;
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}
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else if (signum == SIGTERM) {
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unlink(TDE_LDAP_CERT_UPDATER_PID_FILE);
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exit(0);
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}
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else if (signum == SIGINT) {
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unlink(TDE_LDAP_CERT_UPDATER_PID_FILE);
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exit(0);
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}
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}
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int get_certificate_from_server(TQString certificateName, LDAPRealmConfig realmcfg)
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{
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int retcode = 0;
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TQString errorstring;
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// Bind anonymously to LDAP
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LDAPCredentials* credentials = new LDAPCredentials;
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credentials->username = "";
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credentials->password = "";
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credentials->realm = realmcfg.name.upper();
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credentials->use_tls = false;
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LDAPManager* ldap_mgr = new LDAPManager(realmcfg.name.upper(), TQString("ldap://%1").arg(realmcfg.admin_server).ascii(), credentials);
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// Add the domain-wide computer local admin group to local sudoers
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ldap_mgr->writeSudoersConfFile(&errorstring);
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// Get and install the CA root certificate from LDAP
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printf("[INFO] Updating certificate %s from LDAP\n\r", certificateName.ascii());
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if (ldap_mgr->getTDECertificate("publicRootCertificate", certificateName, &errorstring) != 0) {
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printf("[ERROR] Unable to obtain root certificate for realm %s: %s", realmcfg.name.upper().ascii(), errorstring.ascii());
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retcode = 1;
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}
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delete ldap_mgr;
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delete credentials;
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return retcode;
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}
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int main(int argc, char *argv[])
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{
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// Register signal handler for SIGHUP
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signal(SIGHUP, signalHandler);
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// Register signal handler for SIGINT
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signal(SIGINT, signalHandler);
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// Register signal handler for SIGTERM
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signal(SIGTERM, signalHandler);
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TQDir pidDir(TDE_LDAP_PID_DIR);
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if (!pidDir.exists()) {
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mkdir(TDE_LDAP_PID_DIR, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
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}
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TQFile pidFile(TDE_LDAP_CERT_UPDATER_PID_FILE);
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if (pidFile.open(IO_WriteOnly)) {
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TQTextStream stream(&pidFile);
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stream << getpid();
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pidFile.close();
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}
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// Seed random number generator
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struct timeval time;
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gettimeofday(&time,NULL);
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srand((time.tv_sec * 1000) + (time.tv_usec / 1000));
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// Initialize TDE application libraries
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TDEAboutData aboutData( "tdeldapcertupdater", I18N_NOOP("Realm Certificate Updater"),
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version, description, TDEAboutData::License_GPL,
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"(c) 2013, Timothy Pearson");
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aboutData.addAuthor("Timothy Pearson",0, "kb9vqf@pearsoncomputing.net");
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TDECmdLineArgs::init( argc, argv, &aboutData );
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TDEApplication::disableAutoDcopRegistration();
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TDEApplication app(false, false);
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TDEStartupInfo::appStarted();
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//======================================================================================================================================================
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//
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// Updater code follows
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//
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//======================================================================================================================================================
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KSimpleConfig* systemconfig = new KSimpleConfig( TQString::fromLatin1( KDE_CONFDIR "/ldap/ldapconfigrc" ));
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LDAPRealmConfigList realms = LDAPManager::readTDERealmList(systemconfig, false);
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TQString m_defaultRealm = systemconfig->readEntry("DefaultRealm");
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int prevSecondsToExpiry = (7*24*60*60);
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while (1) {
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bool allDownloadsOK = true;
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TQDateTime now = TQDateTime::currentDateTime();
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TQDateTime earliestCertExpiry = now.addDays(14); // Recheck every 7 days regardless of last expiry check results
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LDAPRealmConfigList::Iterator it;
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for (it = realms.begin(); it != realms.end(); ++it) {
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LDAPRealmConfig realmcfg = it.data();
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TQString certificateName = KERBEROS_PKI_PUBLICDIR + realmcfg.admin_server + ".ldap.crt";
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TQDateTime certExpiry;
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TQDateTime soon = now.addDays(7); // Keep in sync with src/ldapcontroller.cpp
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if (TQFile::exists(certificateName)) {
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certExpiry = LDAPManager::getCertificateExpiration(certificateName);
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if (certExpiry >= now) {
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printf("[INFO] Certificate %s expires %s\n\r", certificateName.ascii(), certExpiry.toString().ascii()); fflush(stdout);
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}
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if ((certExpiry < now) || ((certExpiry >= now) && (certExpiry < soon))) {
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if (get_certificate_from_server(certificateName, realmcfg) != 0) {
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allDownloadsOK = false;
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}
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}
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if (certExpiry < earliestCertExpiry) {
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earliestCertExpiry = certExpiry;
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}
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}
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else {
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mkdir(TDE_CERTIFICATE_DIR, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
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mkdir(KERBEROS_PKI_PUBLICDIR, S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);
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if (get_certificate_from_server(certificateName, realmcfg) != 0) {
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allDownloadsOK = false;
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}
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}
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}
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earliestCertExpiry = earliestCertExpiry.addDays(-7); // Keep in sync with now.addDays above (use negative of value given above)
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int secondsToExpiry = now.secsTo(earliestCertExpiry);
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secondsToExpiry = secondsToExpiry + (rand()%(5*60)); // Nothing worse than thousands of clients hammering the LDAP server all at once...
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if (secondsToExpiry < 1) {
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secondsToExpiry = 1;
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}
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if ((prevSecondsToExpiry == 1) && (allDownloadsOK)) {
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// The server has not yet updated its certificate, even though our copy is close to expiration
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// Therefore, do not hammer the server with useless requests!
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prevSecondsToExpiry = (15*60) + (rand()%(5*60));
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}
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prevSecondsToExpiry = secondsToExpiry;
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printf("[INFO] Will recheck certificates in %d seconds (%d days)\n\r", secondsToExpiry, secondsToExpiry/60/60/24); fflush(stdout);
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if (sleep(secondsToExpiry) != 0) {
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// Signal caught
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if (!received_sighup) {
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break;
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}
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}
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}
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unlink(TDE_LDAP_CERT_UPDATER_PID_FILE);
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//======================================================================================================================================================
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return 0;
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}
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