/* * PROGRAM: JRD Remote Server * MODULE: inet_server.cpp * DESCRIPTION: Internet remote server. * * The contents of this file are subject to the Interbase Public * License Version 1.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy * of the License at http://www.Inprise.com/IPL.html * * Software distributed under the License is distributed on an * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express * or implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code was created by Inprise Corporation * and its predecessors. Portions created by Inprise Corporation are * Copyright (C) Inprise Corporation. * * All Rights Reserved. * Contributor(s): ______________________________________. * * 2002.10.28 Sean Leyne - Code cleanup, removed obsolete "MPEXL" port * 2002.10.28 Sean Leyne - Code cleanup, removed obsolete "DecOSF" port * 2002.10.28 Sean Leyne - Code cleanup, removed obsolete "SGI" port * * 2002.10.29 Sean Leyne - Removed obsolete "Netware" port * * 2002.10.30 Sean Leyne - Removed support for obsolete "PC_PLATFORM" define * */ #include "firebird.h" #include #include #include #include "../jrd/common.h" #include "../jrd/isc_proto.h" #include "../jrd/divorce.h" #include "../jrd/ibase.h" #include "../common/classes/init.h" #include "../common/config/config.h" #include #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef TIME_WITH_SYS_TIME # include # include #else # ifdef HAVE_SYS_TIME_H # include # else # include # endif #endif #ifdef HAVE_UNISTD_H #include #endif #ifdef HAVE_SYS_WAIT_H # include #endif #ifdef HAVE_STRING_H #include #endif #ifdef HAVE_UNISTD_H #include #endif #include #include "../jrd/ibase.h" #include "../jrd/jrd_pwd.h" #include "../remote/remote.h" #include "../jrd/license.h" #include "../common/thd.h" #include "../jrd/file_params.h" #include "../remote/inet_proto.h" #include "../remote/serve_proto.h" #include "../jrd/gds_proto.h" #include "../jrd/thread_proto.h" #include "../common/utils_proto.h" #include "../common/classes/fb_string.h" #ifdef UNIX #ifdef NETBSD #include #else #include #endif #endif #ifdef HAVE_SYS_RESOURCE_H #include #endif #include "../common/classes/semaphore.h" #ifdef UNIX const char* TEMP_DIR = "/tmp"; #define CHANGE_DIR chdir #endif #ifdef SUPERSERVER const char* INTERBASE_USER_NAME = "interbase"; const char* INTERBASE_USER_SHORT = "interbas"; const char* FIREBIRD_USER_NAME = "firebird"; #endif static void set_signal(int, void (*)(int)); static void signal_handler(int); #ifdef SUPERSERVER static int shutdownInetServer(const int reason, const int, void*); static void shutdownInit(); static int tryStopMainThread(); #endif static TEXT protocol[128]; static int INET_SERVER_start = 0; static USHORT INET_SERVER_flag = 0; static bool serverClosing = false; extern "C" { int FB_EXPORTED server_main( int argc, char** argv) { /************************************** * * m a i n * ************************************** * * Functional description * Run the server with apollo mailboxes. * **************************************/ RemPortPtr port; // 01 Sept 2003, Nickolay Samofatov // In GCC version 3.1-3.3 we need to install special error handler // in order to get meaningful terminate() error message on stderr. // In GCC 3.4 or later this is the default. //#if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 && __GNUC_MINOR__ < 4 // std::set_terminate (__gnu_cxx::__verbose_terminate_handler); //#endif const TEXT* const* const end = argc + argv; argv++; bool debug = false, standalone = false; INET_SERVER_flag = 0; int channel = 0; protocol[0] = 0; bool multi_client = false, multi_threaded = false; #ifdef SUPERSERVER INET_SERVER_flag |= SRVR_multi_client; multi_client = multi_threaded = standalone = true; #endif int clients = 0; bool done = false; while (argv < end) { TEXT c; const TEXT* p = *argv++; if (*p++ == '-') while (c = *p++) { switch (UPPER(c)) { case 'D': INET_SERVER_flag |= SRVR_debug; debug = standalone = true; break; #ifndef SUPERSERVER case 'M': INET_SERVER_flag |= SRVR_multi_client; if (argv < end) { if (clients = atoi(*argv)) argv++; } multi_client = standalone = true; break; case 'S': standalone = true; break; case 'I': standalone = false; break; case 'T': multi_threaded = true; break; case 'U': multi_threaded = false; break; #endif // SUPERSERVER case 'E': if (ISC_set_prefix(p, *argv) == -1) printf("Invalid argument Ignored\n"); else argv++; // do not skip next argument if this one is invalid done = true; break; case 'P': fb_utils::snprintf(protocol, sizeof(protocol), "/%s", *argv++); break; case 'H': case '?': printf("Firebird TCP/IP server options are:\n"); printf(" -d : debug on\n"); #ifndef SUPERSERVER // These options are not applicable to super server printf(" -m : multiclient - on\n"); printf(" -s : standalone - true\n"); printf(" -i : standalone - false\n"); printf(" -t : multithread - true (non pc only)\n"); printf(" -u : multithread - false (pc only)\n"); printf(" -t : multithread (non pc only\n"); #endif printf(" -p : specify protocol\n"); printf(" -h|? : print this help\n"); printf("\n"); printf(" (The following -e options used to be -h options)\n"); printf(" -e : set firebird_root path\n"); printf(" -el : set runtime firebird_lock dir\n"); printf(" -em : set firebird_msg dir path\n"); printf(" -z : print version\n"); exit(FINI_OK); case 'Z': printf("Firebird TCP/IP server version %s\n", GDS_VERSION); exit(FINI_OK); } if (done) break; } } // activate paths set with -e family of switches ISC_set_prefix(0, 0); #ifdef UNIX set_signal(SIGPIPE, signal_handler); set_signal(SIGUSR1, signal_handler); set_signal(SIGUSR2, signal_handler); #endif #if defined(UNIX) && defined(HAVE_SETRLIMIT) && defined(HAVE_GETRLIMIT) #if !(defined(DEV_BUILD)) if (Config::getBugcheckAbort()) #endif { // try to force core files creation struct rlimit core; if (getrlimit(RLIMIT_CORE, &core) == 0) { core.rlim_cur = core.rlim_max; if (setrlimit(RLIMIT_CORE, &core) != 0) { gds__log("setrlimit() failed, errno=%d", errno); } } else { gds__log("getrlimit() failed, errno=%d", errno); } // we need some writable directory for core file // on any unix /tmp seems to be the best place if (CHANGE_DIR(TEMP_DIR)) { // error on changing the directory gds__log("Could not change directory to %s due to errno %d", TEMP_DIR, errno); } } #if defined(SUPERSERVER) && (defined SOLARIS || defined HPUX || defined LINUX) { /* Increase max open files to hard limit for Unix platforms which are known to have low soft limits. */ struct rlimit old; if (getrlimit(RLIMIT_NOFILE, &old) == 0 && old.rlim_cur < old.rlim_max) { struct rlimit new_max; new_max.rlim_cur = new_max.rlim_max = old.rlim_max; if (setrlimit(RLIMIT_NOFILE, &new_max) == 0) { #if _FILE_OFFSET_BITS == 64 gds__log("64 bit i/o support is on."); gds__log("Open file limit increased from %lld to %lld", old.rlim_cur, new_max.rlim_cur); #else gds__log("Open file limit increased from %d to %d", old.rlim_cur, new_max.rlim_cur); #endif } } } #endif #endif // Fork off a server, wait for it to die, then fork off another, // but give up after 100 tries #ifndef SUPERSERVER if (multi_client && !debug) { #ifdef UNIX set_signal(SIGUSR1, signal_handler); #endif int child; for (int n = 0; n < 100; n++) { INET_SERVER_start = 0; if (!(child = fork())) break; while (wait(0) != child) if (INET_SERVER_start) { n = 0; // reset error counter on "real" signal break; } gds__log("INET_SERVER/main: gds_inet_server restarted"); } #ifdef UNIX set_signal(SIGUSR1, SIG_DFL); #endif } #endif if (standalone) { if (multi_client) { #ifdef SUPERSERVER // Remove restriction on username, for DEV builds // restrict only for production builds. MOD 21-July-2002 #ifndef DEV_BUILD Firebird::string user_name; // holds the user name // check user id ISC_get_user(&user_name, NULL, NULL, NULL); if (user_name != "root" && user_name != FIREBIRD_USER_NAME && user_name != INTERBASE_USER_NAME && user_name != INTERBASE_USER_SHORT) { // invalid user -- bail out fprintf(stderr, "%s: Invalid user (must be %s, %s, %s or root).\n", "fbserver", FIREBIRD_USER_NAME, INTERBASE_USER_NAME, INTERBASE_USER_SHORT); exit(STARTUP_ERROR); } #endif #else if (setreuid(0, 0) < 0) printf("Inet_server: couldn't set uid to superuser.\n"); #endif INET_set_clients(clients); } if (!debug) { int mask = 0; // FD_ZERO(&mask); mask |= 1 << 2; // FD_SET(2, &mask); divorce_terminal(mask); } { // scope block ISC_STATUS_ARRAY status_vector; port = INET_connect(protocol, 0, status_vector, INET_SERVER_flag, 0); if (!port) { gds__print_status(status_vector); exit(STARTUP_ERROR); } } // end scope block } else { port = INET_server(channel); if (!port) { fprintf(stderr, "fbserver: Unable to start INET_server\n"); exit(STARTUP_ERROR); } } #ifdef SUPERSERVER // before starting the superserver stuff change directory to tmp if (CHANGE_DIR(TEMP_DIR)) { // error on changing the directory gds__log("Could not change directory to %s due to errno %d", TEMP_DIR, errno); } // Server tries to attach to security2.fdb to make sure everything is OK // This code fixes bug# 8429 + all other bug of that kind - from // now on the server exits if it cannot attach to the database // (wrong or no license, not enough memory, etc. { // scope TEXT path[MAXPATHLEN]; ISC_STATUS_ARRAY status; isc_db_handle db_handle = 0L; Jrd::SecurityDatabase::getPath(path); const char dpb[] = {isc_dpb_version1, isc_dpb_gsec_attach, 1, 1}; isc_attach_database(status, strlen(path), path, &db_handle, sizeof dpb, dpb); if (status[0] == 1 && status[1] > 0) { gds__log_status(path, status); isc_print_status(status); exit(STARTUP_ERROR); } isc_detach_database(status, &db_handle); if (status[0] == 1 && status[1] > 0) { gds__log_status(path, status); isc_print_status(status); exit(STARTUP_ERROR); } } // end scope shutdownInit(); #endif SRVR_multi_thread(port, INET_SERVER_flag); #ifdef DEBUG_GDS_ALLOC // In Debug mode - this will report all server-side memory leaks due to remote access //gds_alloc_report(0, __FILE__, __LINE__); char name[MAXPATHLEN]; gds__prefix(name, "memdebug.log"); FILE* file = fopen(name, "w+t"); if (file) { fprintf(file, "Global memory pool allocated objects\n"); getDefaultMemoryPool()->print_contents(file); fclose(file); } #endif // let shutdown thread continue operation if needed // and get ready for normal at-exit shutdown from us THD_yield(); return FINI_OK; } } static void set_signal( int signal_number, void (*handler) (int)) { /************************************** * * s e t _ s i g n a l * ************************************** * * Functional description * Establish signal handler. * **************************************/ #ifdef UNIX struct sigaction vec, old_vec; vec.sa_handler = handler; sigemptyset(&vec.sa_mask); vec.sa_flags = 0; sigaction(signal_number, &vec, &old_vec); #endif } static void signal_handler(int) { /************************************** * * s i g n a l _ h a n d l e r * ************************************** * * Functional description * Dummy signal handler. * **************************************/ ++INET_SERVER_start; } #ifdef SUPERSERVER static int shutdownInetServer(const int reason, const int, void*) { /**************************************************** * * s h u t d o w n I n e t S e r v e r * **************************************************** * * Functional description * In order to avoid blocking of the thread, * which received SIGTERM, run in separate thread. * **************************************/ if (serverClosing) { // Ready to die return FB_SUCCESS; } serverClosing = true; // shutdown main thread - send self-signal to close select() // in main thread and wait for it to get into safe state #ifdef UNIX kill(getpid(), SIGUSR1); #else need a way to interrupt select in main listener thread in windows #endif // shutdown will be completed in main thread if it's not due to exit() called return reason == fb_shutrsn_exit_called ? FB_SUCCESS : FB_FAILURE; } static void shutdownInit() { setStopMainThread(tryStopMainThread); ISC_STATUS_ARRAY status; fb_shutdown_callback(status, shutdownInetServer, fb_shut_postproviders, 0); if (status[0] == 1 && status[1] > 0) { gds__log_status("Error in shutdownInit()", status); isc_print_status(status); exit(STARTUP_ERROR); } } static int tryStopMainThread() { /**************************************************** * * t r y S t o p M a i n T h r e a d * **************************************************** * * Functional description * Called by main thread to test is not shutdown started. * **************************************/ return serverClosing ? 1 : 0; } #endif