243 lines
7.9 KiB
C++
243 lines
7.9 KiB
C++
#define CD_MAIN
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#include "ausreg-cd.h"
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#include <stdio.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <unistd.h>
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bool cdHasTk;
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char cdOrTkValue;
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const char *cdOrTk=&cdOrTkValue;
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using namespace std;
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/*
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* This is the shell for the Unix Client Server (Cliever) daemon.
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* In this design, this "cliever" is more client than server and
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* the main arch has the md as the thing the secondary name provder
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* is using to talk to primary providers.
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*
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* It also contains a CLI for sending commands used in OTE testing
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* to verify the EPP directives. This ruby swig binding of this
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* is behind the final OTE test harness.
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*
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*/
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void runCommander();
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void setSignals();
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void signal_handler(int);
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void usage();
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using namespace boost::interprocess;
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using namespace std;
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//RAII constructor/destructor
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struct shm_remove
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{
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shm_remove() { shared_memory_object::remove("ausreg-cd-global"); }
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~shm_remove() { shared_memory_object::remove("ausreg-cd-global"); }
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} remover;
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shared_memory_object shm(create_only, "ausreg-cd-global", read_write);
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void acClientServer() { // AKA "Cliever"
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int i,lfp;
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char str[10];
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thisConfig->daemonProcess = fork();
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if (thisConfig->daemonProcess < 0) {
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puts("Can't initialize process!");
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exit(1);
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}
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if (thisConfig->runCommander && getpid() == thisConfig->shellProcess)
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{setSignals(); runCommander();}
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setsid(); /* obtain a new process group */
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i=open("/dev/null",O_RDWR); dup(i); dup(i); /* handle standard I/O */
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umask(027); /* set newly created file permissions */
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chdir(RUNNING_DIR); /* change running directory */
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lfp=open(CD_LOCK_FILE,O_RDWR|O_CREAT,0640);
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if (lfp<0) {puts("Can't open lockfile!"); exit(1);}
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if (lockf(lfp,F_TLOCK,0)<0)
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{puts("Can't lock lockfile!"); exit(0);}
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shared_memory_object shm(open_only, "ausreg-cd-global", read_write);
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mapped_region acCDglobal(shm, read_write);
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gm = (ac_cd_global *)acCDglobal.get_address();
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if (strcmp(gm->id,"ausreg-cd")) // Same deal
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{theseLogs.logN(0,"Daemon couldn't identify global memory. Bye."); exit(1);}
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gm->daemon_pid = getpid();
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sprintf(str,"%d",getpid());
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theseLogs.logN(1,"ausreg-cd running (%s)",str);
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strcat(str,"\n");
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write(lfp,str,strlen(str)); /* record pid to lockfile */
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setSignals();
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theseLogs.init("ausreg-cd");
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theseLogs.logN(0,CD_NAME " " CD_VERSION " compiled on " __DATE__ " @ " __TIME__);
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theseLogs.logN(3,"Cliever processing(%d) begins for devices on port %s to MD at %s.",getpid(),thisConfig->telemetryPortStr.c_str(),thisConfig->mdAddress.c_str());
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try {
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boost::thread cliever(runCliever);
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boost::thread apiLayer(runAPILayer);
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#ifdef XMLRPC_C
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xmlrpc_c::serverAbyss myAbyssServer(
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thisConfig->api_registry,
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thisConfig->xmlrpcPort,
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thisConfig->xmlrpcLogpath
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);
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#endif
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if (!apiLayer.joinable() || !cliever.joinable()) {
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if (!apiLayer.joinable())
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theseLogs.logN(0,"Failed to start API layer, ausred-cd process will terminate.");
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if (!cliever.joinable())
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theseLogs.logN(0,"Failed to start client-server, ausureg-cd process will terminate.");
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}
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else {
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theseLogs.logN(0,"Cliever started OK.");
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#ifdef XMLRPC_C
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theseLogs->logN(2,"%s %d","Accepting XMLRPC API Requests on Port",thisConfig->xmlrpcPort);
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myAbyssServer.run();
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#endif
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apiLayer.join();
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theseLogs.logN(0,"ausreg-cd EOJ.");
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}
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}
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catch (std::exception &e)
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{
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theseLogs.logN(1,"Exception: %s",e.what());
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}
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catch (...) {
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theseLogs.logN(0,"General fault.");
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}
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exit(thisCliever->rc);
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}
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int main(int const argc, const char ** const argv)
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{
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const char *exeName,*banner = "\n" CD_NAME " " CD_VERSION " compiled on " __DATE__ " @ " __TIME__ " (%d)\n";
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int mthParm, rc = OK;
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thisCliever = NULL;
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cdHasTk = strstr(argv[0],"loadtk") ? true : false;
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cdOrTkValue = cdHasTk ? 'd' : 'D'; // d == EPP Toolkit enabled, D = !d
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shm.truncate(CD_GLOBAL_SIZE);
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mapped_region acCDglobal(shm, read_write);
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memset(acCDglobal.get_address(), 0, acCDglobal.get_size());
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gm = (ac_cd_global *)acCDglobal.get_address();
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strcpy(gm->id,"ausreg-cd");
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strcmp(gm->id,"ausreg-cd"); // Will segfault if there is a problem so catches are futile.
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// But the signal trap will catch the fault.
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thisConfig = new clientDaemonConfig();
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thisConfig->shellProcess = getpid();
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strcpy(thisConfig->origCmd,argv[0]);
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if (argc < 2 || argc > 7) usage();
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thisConfig->telemetryPort = atoi(argv[1]);
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if (thisConfig->telemetryPort < 1000 || thisConfig->telemetryPort > 65535)
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{
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std::cerr << "The <telemetry-udp-port> value is invalid.\n";
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exit(1);
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}
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thisConfig->telemetryPortStr = std::string(argv[1]);
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for (mthParm=2;mthParm < argc;mthParm++) {
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if (*argv[mthParm] == '*') {
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thisConfig->runCommander = false;
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}
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else
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if (!strncmp(argv[mthParm],"device=",7)) {
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thisConfig->deviceName = std::string(argv[mthParm]+8);
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}
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else
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if (!strncmp(argv[mthParm],"logs=",4)) {
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strcpy(thisConfig->logPath,argv[mthParm]+5);
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}
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else
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if (!strncmp(argv[mthParm],"mdIP=",4)) {
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thisConfig->mdAddress = std::string(argv[mthParm]+5);
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}
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else usage();
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}
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if (thisConfig->runCommander) printf(banner,thisConfig->shellProcess);
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acClientServer();
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while(!gm->graceful) sleep(2);
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}
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void runCommander() {
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char msg[128];
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int i;
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mdCommander commander;
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theseLogs.init("ausreg-cd-ui");
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theseLogs.logN(0,"Interactive command processor started.");
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commander.driver();
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if (thisConfig->terminateRequest) {
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theseLogs.logN(0,"Interactive shutdown requested.");
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puts("ausreg-cd operator issued terminate command.");
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kill(gm->daemon_pid,SIGTERM);
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} else {
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theseLogs.logN(0,"Interactive command processor ended.");
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sprintf(msg,"Commander terminated, ausreg-cd continues (%d).",gm->daemon_pid);
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puts(msg);
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}
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theseLogs.logN(1,"Closing out I/O for shell process (%d)",thisConfig->shellProcess);
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for (i=getdtablesize();i>=0;--i) close(i); /* close all descriptors */
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exit(0);
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}
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void setSignals() {
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signal(SIGCHLD,SIG_IGN); /* ignore child */
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signal(SIGTSTP,SIG_IGN); /* ignore tty signals */
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signal(SIGTTOU,SIG_IGN); // both input
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signal(SIGTTIN,SIG_IGN); // and output
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signal(SIGSEGV,signal_handler);
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signal(SIGUSR1,signal_handler); // commander log messages
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signal(SIGHUP,signal_handler); /* catch hangup signal */
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signal(SIGTERM,signal_handler); /* catch kill signal */
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}
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void signal_handler(int sig)
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{ int debug=0;
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switch(sig) {
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case SIGSEGV:
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debug=1; // for breakpoint
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theseLogs.logN(0,"Segfault great that you can see this.");
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break;
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case SIGUSR1:
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break;
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case SIGHUP:
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theseLogs.logN(0,"hangup signal caught, currently ausreg-cd ignores this.");
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break;
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case SIGTERM:
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theseLogs.logN(0,"terminate signal caught, ausreg-cd will shutdown.");
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cdShutdown termEvent;
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termEvent.send();
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break;
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}
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}
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void usage() {
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std::cerr << "Usage: " << cdOrTk<< " <udp-port> ['*'] [device=TEST] [mdIP=" MD_DEFAULT_IP "] [logs=\\tmp]\n\n where \n\n"
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"\t <udp-port> is required, must be the first parameter, and must be 1000 or greater. \n"
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"\t The other parameters are optional and non-positional and take the shown defaults. \n"
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"\t '*', if present, indicates skip the command loop (string quotes may be required). \n\n";
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exit(1);
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}
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