Roxen.git/server/base_server/roxen.pike:a3c9650d18e0165b6522955faa36f93a8f5e825d

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6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930 // This file is part of Roxen WebServer. // Copyright © 1996 - 2009, Roxen IS. // // The Roxen WebServer main program. // // Per Hedbor, Henrik Grubbström, Pontus Hagland, David Hedbor and others. // ABS and suicide systems contributed freely by Francesco Chemolli constant cvs_version="$Id: roxen.pike,v 1.1045 2009/11/23 15:38:41 grubba Exp $"; //! @appears roxen //! //! The Roxen WebServer main program. // The argument cache. Used by the image cache. ArgCache argcache; // Some headerfiles #define IN_ROXEN #include <roxen.h> #include <config.h> #include <module.h> #include <stat.h> #include <timers.h> // Inherits inherit "global_variables"; #ifdef SNMP_AGENT inherit "snmpagent"; #endif #ifdef SMTP_RELAY inherit "smtprelay"; #endif inherit "hosts"; inherit "disk_cache"; // inherit "language"; inherit "supports"; inherit "module_support"; inherit "config_userdb"; // Used to find out which thread is the backend thread. Thread.Thread backend_thread; // --- Locale defines --- //<locale-token project="roxen_start"> LOC_S </locale-token> //<locale-token project="roxen_message"> LOC_M </locale-token> #define LOC_S(X,Y) _STR_LOCALE("roxen_start",X,Y) #define LOC_M(X,Y) _STR_LOCALE("roxen_message",X,Y) #define CALL_M(X,Y) _LOCALE_FUN("roxen_message",X,Y) // --- Debug defines --- #ifdef SSL3_DEBUG # define SSL3_WERR(X) report_debug("TLS port %s: %s\n", get_url(), X) #else # define SSL3_WERR(X) #endif #ifdef THREAD_DEBUG # define THREAD_WERR(X) report_debug("Thread: "+X+"\n") #else # define THREAD_WERR(X) #endif // Needed to get core dumps of seteuid()'ed processes on Linux. #if constant(System.dumpable) #define enable_coredumps(X) System.dumpable(X) #else #define enable_coredumps(X) #endif #define DDUMP(X) sol( combine_path( __FILE__, "../../" + X ), dump ) protected function sol = master()->set_on_load; // Tell Pike.count_memory this is global. constant pike_cycle_depth = 0; #ifdef TEST_EUID_CHANGE int test_euid_change; #endif string md5( string what ) { return Gmp.mpz(Crypto.MD5.hash( what ),256)->digits(32); } string query_configuration_dir() { return configuration_dir; } array(string|int) filename_2 (program|object o) { if( objectp( o ) ) o = object_program( o ); string fname = Program.defined (o); int line; if (fname) { array(string) p = fname / ":"; if (sizeof (p) > 1 && p[-1] != "" && sscanf (p[-1], "%d%*c", int l) == 1) { fname = p[..<1] * ":"; line = l; } } else if( !fname ) { fname = master()->program_name( o ); if (!fname) return ({0, 0}); } string cwd = getcwd() + "/"; if (has_prefix (fname, cwd)) fname = fname[sizeof (cwd)..]; return ({fname, line}); } string filename( program|object o ) { [string fname, int line] = filename_2 (o); return fname || "(unknown program)"; } protected int once_mode; // Note that 2.5 is a nonexisting version. It's only used for the // cache static optimization for tags such as <if> and <emit> inside // <cache> since that optimization can give tricky incompatibilities // with 2.4. array(string) compat_levels = ({"2.1", "2.2", "2.4", "2.5", "3.3", "3.4", "4.0", "4.5", "5.0"}); #ifdef THREADS mapping(string:string) thread_names = ([]); string thread_name( object thread ) { string tn; if( thread_names[ tn=sprintf("%O",thread) ] ) return thread_names[tn]; return tn; } void name_thread( object thread, string name ) { thread_names[ sprintf( "%O", thread ) ] = name; } // This mutex is used by Privs Thread.Mutex euid_egid_lock = Thread.Mutex(); #endif /* THREADS */ /* * The privilege changer. Works like a mutex lock, but changes the UID/GID * while held. Blocks all threads. * * Based on privs.pike,v 1.36. */ int privs_level; protected class Privs { #if efun(seteuid) int saved_uid; int saved_gid; int new_uid; int new_gid; #define LOGP (variables && variables->audit && variables->audit->query()) #if constant(geteuid) && constant(getegid) && constant(seteuid) && constant(setegid) #define HAVE_EFFECTIVE_USER #endif private string _getcwd() { if (catch{return(getcwd());}) { return("Unknown directory (no x-bit on current directory?)"); } } private string dbt(array t) { if(!arrayp(t) || (sizeof(t)<2)) return ""; return (((t[0]||"Unknown program")-(_getcwd()+"/"))-"base_server/")+":"+t[1]+"\n"; } #ifdef THREADS protected mixed mutex_key; // Only one thread may modify the euid/egid at a time. protected object threads_disabled; #endif /* THREADS */ int p_level; void create(string reason, int|string|void uid, int|string|void gid) { // No need for Privs if the uid has been changed permanently. if(getuid()) return; #ifdef PRIVS_DEBUG report_debug(sprintf("Privs(%O, %O, %O)\n" "privs_level: %O\n", reason, uid, gid, privs_level)); #endif /* PRIVS_DEBUG */ #ifdef HAVE_EFFECTIVE_USER array u; #ifdef THREADS if (euid_egid_lock) { if (mixed err = catch { mutex_key = euid_egid_lock->lock(); }) werror (describe_backtrace (err)); } threads_disabled = _disable_threads(); #endif /* THREADS */ p_level = privs_level++; /* Needs to be here since root-priviliges may be needed to * use getpw{uid,nam}. */ saved_uid = geteuid(); saved_gid = getegid(); seteuid(0); /* A string of digits? */ if(stringp(uid) && (replace(uid,"0123456789"/"",({""})*10)=="")) uid = (int)uid; if(stringp(gid) && (replace(gid, "0123456789"/"", ({"" })*10) == "")) gid = (int)gid; if(!stringp(uid)) u = getpwuid(uid); else { u = getpwnam(uid); if(u) uid = u[2]; } if(u && !gid) gid = u[3]; if(!u) { if (uid && (uid != "root")) { if (intp(uid) && (uid >= 60000)) { report_warning(sprintf("Privs: User %d is not in the password database.\n" "Assuming nobody.\n", uid)); // Nobody. gid = gid || uid; // Fake a gid also. u = ({ "fake-nobody", "x", uid, gid, "A real nobody", "/", "/sbin/sh" }); } else { error("Unknown user: "+uid+"\n"); } } else { u = ({ "root", "x", 0, gid, "The super-user", "/", "/sbin/sh" }); } } if(LOGP) report_notice(LOC_M(1, "Change to %s(%d):%d privs wanted (%s), from %s"), (string)u[0], (int)uid, (int)gid, (string)reason, (string)dbt(backtrace()[-2])); if (u[2]) { #if efun(cleargroups) if (mixed err = catch { cleargroups(); }) werror (describe_backtrace (err)); #endif /* cleargroups */ #if efun(initgroups) if (mixed err = catch { initgroups(u[0], u[3]); }) werror (describe_backtrace (err)); #endif } gid = gid || getgid(); int err = (int)setegid(new_gid = gid); if (err < 0) { report_warning(LOC_M(2, "Privs: WARNING: Failed to set the " "effective group id to %d!\n" "Check that your password database is correct " "for user %s(%d),\n and that your group " "database is correct.\n"), gid, (string)u[0], (int)uid); int gid2 = gid; #ifdef HPUX_KLUDGE if (gid >= 60000) { /* HPUX has doesn't like groups higher than 60000, * but has assigned nobody to group 60001 (which isn't even * in /etc/group!). * * HPUX's libc also insists on filling numeric fields it doesn't like * with the value 60001! */ report_debug("Privs: WARNING: Assuming nobody-group.\n" "Trying some alternatives...\n"); // Assume we want the nobody group, and try a couple of alternatives foreach(({ 60001, 65534, -2 }), gid2) { report_debug("%d... ", gid2); if (initgroups(u[0], gid2) >= 0) { if ((err = setegid(new_gid = gid2)) >= 0) { report_debug("Success!\n"); break; } } } } #endif /* HPUX_KLUDGE */ if (err < 0) { report_debug("Privs: Failed\n"); error ("Failed to set EGID to %d\n", gid); } report_debug("Privs: WARNING: Set egid to %d instead of %d.\n", gid2, gid); gid = gid2; } if(getgid()!=gid) setgid(gid||getgid()); seteuid(new_uid = uid); enable_coredumps(1); #endif /* HAVE_EFFECTIVE_USER */ } void destroy() { // No need for Privs if the uid has been changed permanently. if(getuid()) return; #ifdef PRIVS_DEBUG report_debug(sprintf("Privs->destroy()\n" "privs_level: %O\n", privs_level)); #endif /* PRIVS_DEBUG */ #ifdef HAVE_EFFECTIVE_USER /* Check that we don't increase the privs level */ if (p_level >= privs_level) { report_error(sprintf("Change back to uid#%d gid#%d from uid#%d gid#%d\n" "in wrong order! Saved level:%d Current level:%d\n" "Occurs in:\n%s\n", saved_uid, saved_gid, new_uid, new_gid, p_level, privs_level, describe_backtrace(backtrace()))); return(0); } if (p_level != privs_level-1) { report_error(sprintf("Change back to uid#%d gid#%d from uid#%d gid#%d\n" "Skips privs level. Saved level:%d Current level:%d\n" "Occurs in:\n%s\n", saved_uid, saved_gid, new_uid, new_gid, p_level, privs_level, describe_backtrace(backtrace()))); } privs_level = p_level; if(LOGP) { if (mixed err = catch { array bt = backtrace(); if (sizeof(bt) >= 2) { report_notice(LOC_M(3,"Change back to uid#%d gid#%d, from %s")+"\n", saved_uid, saved_gid, dbt(bt[-2])); } else { report_notice(LOC_M(4,"Change back to uid#%d gid#%d, " "from backend")+"\n", saved_uid, saved_gid); } }) werror (describe_backtrace (err)); } #ifdef PRIVS_DEBUG int uid = geteuid(); if (uid != new_uid) { report_debug("Privs: UID #%d differs from expected #%d\n" "%s\n", uid, new_uid, describe_backtrace(backtrace())); } int gid = getegid(); if (gid != new_gid) { report_debug("Privs: GID #%d differs from expected #%d\n" "%s\n", gid, new_gid, describe_backtrace(backtrace())); } #endif /* PRIVS_DEBUG */ seteuid(0); array u = getpwuid(saved_uid); #if efun(cleargroups) if (mixed err = catch { cleargroups(); }) werror (describe_backtrace (err)); #endif /* cleargroups */ if(u && (sizeof(u) > 3)) { if (mixed err = catch { initgroups(u[0], u[3]); }) werror (describe_backtrace (err)); } setegid(saved_gid); seteuid(saved_uid); enable_coredumps(1); #endif /* HAVE_EFFECTIVE_USER */ } #else /* efun(seteuid) */ void create(string reason, int|string|void uid, int|string|void gid){} #endif /* efun(seteuid) */ } /* Used by read_config.pike, since there seems to be problems with * overloading otherwise. */ protected Privs PRIVS(string r, int|string|void u, int|string|void g) { return Privs(r, u, g); } // Current Configuration. Thread.Local current_configuration = Thread.Local(); // font cache and loading. // // This will be changed to a list of server global modules, to make it // easier to implement new types of fonts (such as PPM color fonts, as // an example) class Fonts { class Font { Image.Image write( string ... what ); array(int) text_extents( string ... what ); }; array available_font_versions(string name, int size); string describe_font_type(string n); Font get_font(string f, int size, int bold, int italic, string justification, float|int xspace, float|int yspace); Font resolve_font(string f, string|void justification); array(string) available_fonts(int(0..1)|void force_reload); } Fonts fonts; // Will replace Configuration after create() is run. program _configuration; /*set in create*/ array(Configuration) configurations = ({}); private void stop_all_configurations() { configurations->unregister_urls(); #ifdef THREADS // Spend some time waiting out the handler threads before starting // to shut down the modules. hold_handler_threads(); release_handler_threads(3); #endif configurations->stop(1); } // Function that actually shuts down Roxen. (see low_shutdown). private void really_low_shutdown(int exit_code) { // Die nicely. Catch for paranoia reasons #ifdef THREADS if (mixed err = catch (stop_handler_threads())) werror (describe_backtrace (err)); #endif /* THREADS */ if (!exit_code || once_mode) { // We're shutting down; Attempt to take mysqld with us. if (mixed err = catch { report_notice("Shutting down MySQL.\n"); } || catch { Sql.Sql db = connect_to_my_mysql(0, "mysql"); db->shutdown(); }) werror (describe_backtrace (err)); } destruct (cache); #if 0 // Disabled since it's lying when the server is shut down with a // SIGTERM or SIGINT to the start script (which include the stop // action of the init.d script). if (mixed err = catch { if (exit_code && !once_mode) report_notice("Restarting Roxen.\n"); else report_notice("Shutting down Roxen.\n"); }) werror (describe_backtrace (err)); #endif roxenloader.real_exit( exit_code ); // Now we die... } private int shutdown_recurse; // Shutdown Roxen // exit_code = 0 True shutdown // exit_code = -1 Restart private void low_shutdown(int exit_code) { if(shutdown_recurse >= 4) { if (mixed err = catch (report_notice("Exiting roxen (spurious signals received).\n")) || catch (stop_all_configurations())) werror (describe_backtrace (err)); destruct(cache); #ifdef THREADS if (mixed err = catch (stop_handler_threads())) werror (describe_backtrace (err)); #endif /* THREADS */ roxenloader.real_exit(exit_code); } if (shutdown_recurse++) return; #ifndef NO_SLOW_REQ_BT // Turn off the backend thread monitor while we're shutting down. slow_be_timeout_changed(); #endif if (mixed err = catch(stop_all_configurations())) werror (describe_backtrace (err)); #ifdef SNMP_AGENT if(objectp(snmpagent)) { snmpagent->stop_trap(); snmpagent->disable(); } #endif call_out(really_low_shutdown, 0.1, exit_code); } private int shutdown_started; // Perhaps somewhat misnamed, really... This function will close all // listen ports and then quit. The 'start' script should then start a // new copy of roxen automatically. void restart(float|void i, void|int exit_code) //! Restart roxen, if the start script is running { shutdown_started = 1; call_out(low_shutdown, i, exit_code || -1); } void shutdown(float|void i) //! Shut down roxen { shutdown_started = 1; call_out(low_shutdown, i, 0); } void exit_when_done() { shutdown_started = 1; report_notice("Interrupt request received.\n"); low_shutdown(-1); } int is_shutting_down() //! Returns true if Roxen is shutting down. { return shutdown_started; } /* * handle() stuff */ #ifdef THREADS // function handle = threaded_handle; Thread do_thread_create(string id, function f, mixed ... args) { Thread.Thread t = thread_create(f, @args); name_thread( t, id ); return t; } // Shamelessly uses facts about pikes preemting algorithm. // Might have to be fixed in the future. class Queue //! Thread.Queue lookalike, which uses some archaic and less //! known features of the preempting algorithm in pike to optimize the //! read function. // // If those archaic and less known features are to depend on the // interpreter lock in the while loop that waits on the condition // variable then it doesn't work since Pike always might yield before // a function call (specifically, the wait() call in the condition // variable). Thus a handler thread might wait even though there is a // request to process. However, the only effect is that that specific // request isn't serviced timely; when the next request comes in the // thread will be woken up and both requests will be handled. // Furthermore it's extremely rare in the first place since there // normally are several handler threads. { inherit Thread.Condition : r_cond; array buffer=allocate(8); int r_ptr, w_ptr; int size() { return w_ptr - r_ptr; } mixed read() { while(!(w_ptr - r_ptr)) { // Make a MutexKey for wait() to please 7.3. This will of course // not fix the race, but we ignore that. See the discussion // above. (Must have an extra ref to the mutex since the // MutexKey doesn't keep one.) Thread.Mutex m = Thread.Mutex(); r_cond::wait (m->lock()); } mixed tmp = buffer[r_ptr]; buffer[r_ptr++] = 0; // Throw away any references. return tmp; } mixed tryread() { if (!(w_ptr - r_ptr)) return ([])[0]; mixed tmp = buffer[r_ptr]; buffer[r_ptr++] = 0; // Throw away any references. return tmp; } // Warning: This function isn't thread safe. void write(mixed v) { if(w_ptr >= sizeof(buffer)) { buffer=buffer[r_ptr..]+allocate(8); w_ptr-=r_ptr; r_ptr=0; } buffer[w_ptr++]=v; r_cond::signal(); } } #ifndef NO_SLOW_REQ_BT // This is a system to dump all threads whenever a request takes // longer than a configurable timeout. protected Pike.Backend slow_req_monitor; // Set iff slow req bt is enabled. protected float slow_req_timeout, slow_be_timeout; protected void slow_req_monitor_thread (Pike.Backend my_monitor) { // my_monitor is just a safeguard to ensure we don't get multiple // monitor threads. while (slow_req_monitor == my_monitor) slow_req_monitor (3600); } protected mixed slow_be_call_out; protected void slow_be_before_cb() { #ifdef DEBUG if (this_thread() != backend_thread) error ("Run from wrong thread.\n"); #endif if (Pike.Backend monitor = slow_be_call_out && slow_req_monitor) { monitor->remove_call_out (slow_be_call_out); slow_be_call_out = 0; } } protected void slow_be_after_cb() { #ifdef DEBUG if (this_thread() != backend_thread) error ("Run from wrong thread.\n"); #endif if (slow_be_timeout > 0.0) if (Pike.Backend monitor = slow_req_monitor) slow_be_call_out = monitor->call_out (dump_slow_req, slow_be_timeout, this_thread(), slow_be_timeout); } void slow_req_count_changed() { Pike.Backend monitor = slow_req_monitor; int count = query ("slow_req_bt_count"); if (count && monitor) { // Just a change of the count - nothing to do. } else if (count) { // Start. monitor = slow_req_monitor = Pike.SmallBackend(); Thread.thread_create (slow_req_monitor_thread, monitor); monitor->call_out (lambda () {}, 0); // Safeguard if there's a race. slow_be_timeout_changed(); } else if (monitor) { // Stop. slow_req_monitor = 0; monitor->call_out (lambda () {}, 0); // To wake up the thread. slow_be_timeout_changed(); } } void slow_req_timeout_changed() { #ifdef DEBUG if (query ("slow_req_bt_timeout") < 0) error ("Invalid timeout.\n"); #endif slow_req_timeout = query ("slow_req_bt_timeout"); } void slow_be_timeout_changed() { #ifdef DEBUG if (query ("slow_be_bt_timeout") < 0) error ("Invalid timeout.\n"); #endif slow_be_timeout = query ("slow_be_bt_timeout"); #ifdef DEBUG if ((Pike.DefaultBackend->before_callback && Pike.DefaultBackend->before_callback != slow_be_before_cb) || (Pike.DefaultBackend->after_callback && Pike.DefaultBackend->after_callback != slow_be_after_cb)) werror ("Pike.DefaultBackend already hooked up with " "other before/after callbacks - they get overwritten: %O/%O\n", Pike.DefaultBackend->before_callback, Pike.DefaultBackend->after_callback); #endif if (query ("slow_req_bt_count") && slow_be_timeout > 0.0 && // Don't trig if we're shutting down. !shutdown_started) { Pike.DefaultBackend->before_callback = slow_be_before_cb; Pike.DefaultBackend->after_callback = slow_be_after_cb; } else { Pike.DefaultBackend->before_callback = 0; Pike.DefaultBackend->after_callback = 0; if (Pike.Backend monitor = slow_be_call_out && slow_req_monitor) { monitor->remove_call_out (slow_be_call_out); slow_be_call_out = 0; } } } protected void dump_slow_req (Thread.Thread thread, float timeout) { object threads_disabled = _disable_threads(); int count = query ("slow_req_bt_count"); if (count > 0) set ("slow_req_bt_count", count - 1); if (thread == backend_thread && !slow_be_call_out) { // Avoid false alarms for the backend thread if we got here due to // a race. Should perhaps have something like this for the handler // threads too, but otoh races are more rare there due to the // longer timeouts. } else { report_debug ("###### %s 0x%x has been busy for more than %g seconds.\n", thread == backend_thread ? "Backend thread" : "Thread", thread->id_number(), timeout); describe_all_threads (0, threads_disabled); } threads_disabled = 0; // Paranoia. } #endif // !NO_SLOW_REQ_BT // // This is easier than when there are no threads. // // See the discussion below. :-) // // // But there is extra functionality below we really want, though, // // so let's use that one instead... // function async_sig_start( function f, int really ) // { // return lambda( mixed ... args ) { // thread_create( f, @args ); // }; // } local protected Queue handle_queue = Queue(); //! Queue of things to handle. //! An entry consists of an array(function fp, array args) local protected int thread_reap_cnt; //! Number of handler threads in the process of being stopped. protected int threads_on_hold; //! Number of handler threads on hold. local protected void handler_thread(int id) //! The actual handling function. This functions read function and //! parameters from the queue, calls it, then reads another one. There //! is a lot of error handling to ensure that nothing serious happens if //! the handler function throws an error. { THREAD_WERR("Handle thread ["+id+"] started"); mixed h, q; set_u_and_gid (1); #ifdef TEST_EUID_CHANGE if (test_euid_change) { Stdio.File f = Stdio.File(); if (f->open ("rootonly", "r") && f->read()) werror ("Handler thread %d can read rootonly\n", id); else werror ("Handler thread %d can't read rootonly\n", id); } #endif while(1) { int thread_flagged_as_busy; #ifndef NO_SLOW_REQ_BT Pike.Backend monitor; mixed call_out; #endif if(q=catch { do { // if (!busy_threads) werror ("GC: %d\n", gc()); cache_clear_deltas(); THREAD_WERR("Handle thread ["+id+"] waiting for next event"); if(arrayp(h=handle_queue->read()) && h[0]) { THREAD_WERR(sprintf("Handle thread [%O] calling %O(%{%O, %})", id, h[0], h[1] / 1)); set_locale(); busy_threads++; thread_flagged_as_busy = 1; #ifndef NO_SLOW_REQ_BT if (h[0] != bg_process_queue && // Leave out bg_process_queue. It makes a timeout on // every individual job instead. (monitor = slow_req_monitor) && slow_req_timeout > 0.0) { call_out = monitor->call_out (dump_slow_req, slow_req_timeout, this_thread(), slow_req_timeout); h[0](@h[1]); monitor->remove_call_out (call_out); } else #endif h[0](@h[1]); h=0; busy_threads--; thread_flagged_as_busy = 0; } else if(!h) { // Roxen is shutting down. report_debug("Handle thread ["+id+"] stopped.\n"); thread_reap_cnt--; #ifdef NSERIOUS if(!thread_reap_cnt) report_debug("+++ATH\n"); #endif return; } #ifdef DEBUG else if (h != 1) error ("Unknown message in handle_queue: %O\n", h); #endif else { num_hold_messages--; THREAD_WERR("Handle thread [" + id + "] put on hold"); threads_on_hold++; if (Thread.Condition cond = hold_wakeup_cond) { // Make a MutexKey for wait() to please 7.3. This will of // course not fix the race, but we ignore that. See the // comment at the declaration of hold_wakeup_cond. (Must // have an extra ref to the mutex since the MutexKey // doesn't keep one.) Thread.Mutex m = Thread.Mutex(); cond->wait (m->lock()); } threads_on_hold--; THREAD_WERR("Handle thread [" + id + "] released"); } } while(1); }) { if (thread_flagged_as_busy) busy_threads--; #ifndef NO_SLOW_REQ_BT if (call_out) monitor->remove_call_out (call_out); #endif if (h = catch { report_error(/*LOCALE("", "Uncaught error in handler thread: %s" "Client will not get any response from Roxen.\n"),*/ describe_backtrace(q)); if (q = catch {h = 0;}) { report_error(LOC_M(5, "Uncaught error in handler thread: %sClient " "will not get any response from Roxen.")+"\n", describe_backtrace(q)); catch (q = 0); } }) { catch { report_error("Error reporting error:\n"); report_error(sprintf("Raw error: %O\n", h[0])); report_error(sprintf("Original raw error: %O\n", q[0])); }; catch (q = 0); catch (h = 0); } } } } void handle(function f, mixed ... args) { handle_queue->write(({f, args })); } int handle_queue_length() { return handle_queue->size(); } int number_of_threads; //! The number of handler threads to run. int busy_threads; //! The number of currently busy threads. protected array(object) handler_threads = ({}); //! The handler threads, the list is kept for debug reasons. void start_handler_threads() { if (query("numthreads") <= 1) { set( "numthreads", 1 ); report_warning (LOC_S(1, "Starting one thread to handle requests.")+"\n"); } else { report_notice (LOC_S(2, "Starting %d threads to handle requests.")+"\n", query("numthreads") ); } array(object) new_threads = ({}); for(; number_of_threads < query("numthreads"); number_of_threads++) new_threads += ({ do_thread_create( "Handle thread [" + number_of_threads + "]", handler_thread, number_of_threads ) }); handler_threads += new_threads; } protected int num_hold_messages; protected Thread.Condition hold_wakeup_cond = Thread.Condition(); // Note: There are races in the use of this condition variable, but // the only effect of that is that some handler thread might be // considered hung when it's actually waiting on hold_wakeup_cond, and // the hold/release handler threads function deal with hung threads // anyway. The outcome would only be that release_handler_threads // starts some extra handler thread unnecessarily. void hold_handler_threads() //! Tries to put all handler threads on hold, but gives up if it takes //! too long. { if (!hold_wakeup_cond) { THREAD_WERR("Ignoring request to hold handler threads during stop"); return; } int timeout=10; #if constant(_reset_dmalloc) // DMALLOC slows stuff down a bit... timeout *= 10; #endif /* constant(_reset_dmalloc) */ THREAD_WERR("Putting " + (number_of_threads - threads_on_hold) + " handler threads on hold, " + threads_on_hold + " on hold already"); for (int i = number_of_threads - threads_on_hold - num_hold_messages; i-- > 0;) { handle_queue->write (1); num_hold_messages++; } while (threads_on_hold < number_of_threads && timeout--) sleep (0.1); THREAD_WERR(threads_on_hold + " handler threads on hold, " + (number_of_threads - threads_on_hold) + " not responding"); } void release_handler_threads (int numthreads) //! Releases any handler threads put on hold. If necessary new threads //! are started to ensure that at least @[numthreads] threads are //! responding. Threads that haven't arrived to the hold state since //! @[hold_handler_threads] are considered nonresponding. { if (Thread.Condition cond = hold_wakeup_cond) { // Flush out any remaining hold messages from the queue. for (int i = handle_queue->size(); i && num_hold_messages; i--) { mixed task = handle_queue->tryread(); if (task == 1) num_hold_messages--; else handle_queue->write (task); } #ifdef DEBUG if (num_hold_messages) error ("num_hold_messages is bogus (%d).\n", num_hold_messages); #endif num_hold_messages = 0; int blocked_threads = number_of_threads - threads_on_hold; int threads_to_create = numthreads - threads_on_hold; THREAD_WERR("Releasing " + threads_on_hold + " threads on hold"); cond->broadcast(); if (threads_to_create > 0) { array(object) new_threads = ({}); for (int n = 0; n < threads_to_create; number_of_threads++, n++) new_threads += ({ do_thread_create( "Handle thread [" + number_of_threads + "]", handler_thread, number_of_threads ) }); handler_threads += new_threads; report_notice ("Created %d new handler threads to compensate " "for %d blocked ones.\n", threads_to_create, blocked_threads); } } else { THREAD_WERR("Ignoring request to release handler threads during stop"); return; } } protected Thread.MutexKey backend_block_lock; void stop_handler_threads() //! Stop all the handler threads and the backend, but give up if it //! takes too long. { int timeout=10; #if constant(_reset_dmalloc) // DMALLOC slows stuff down a bit... timeout *= 10; #endif /* constant(_reset_dmalloc) */ report_debug("Stopping all request handler threads.\n"); // Wake up any handler threads on hold, and ensure none gets on hold // after this. if (Thread.Condition cond = hold_wakeup_cond) { hold_wakeup_cond = 0; cond->broadcast(); } while(number_of_threads>0) { number_of_threads--; handle_queue->write(0); thread_reap_cnt++; } handler_threads = ({}); if (this_thread() != backend_thread && !backend_block_lock) { thread_reap_cnt++; Thread.Mutex mutex = Thread.Mutex(); backend_block_lock = mutex->lock(); call_out (lambda () { thread_reap_cnt--; report_debug("Backend thread stopped.\n"); mutex->lock(); error("Backend stop failed.\n"); }, 0); } while(thread_reap_cnt) { sleep(0.1); if(--timeout<=0) { report_debug("Giving up waiting on threads; " "%d threads blocked.\n", thread_reap_cnt); #ifdef DEBUG describe_all_threads(); #endif return; } } } #else // handle function used when THREADS is not enabled. void handle(function f, mixed ... args) { f(@args); } // function handle = unthreaded_handle; #endif /* THREADS */ function async_sig_start( function f, int really ) { class SignalAsyncVerifier( function f ) { protected int async_called; void really_call( array args ) { async_called = 0; f( @args ); } void call( mixed ... args ) { if( async_called && async_called-time() ) { report_debug("Received signal %s\n", (string) signame( args[0] ) ); report_debug("\n\n" "Async calling failed for %O, calling synchronous\n", f); report_debug("Backtrace at time of hangup:\n%s\n", describe_backtrace( backtrace() )); f( @args ); return; } if( !async_called ) // Do not queue more than one call at a time. { report_debug("Received signal %s\n", (string) signame( args[0] ) ); async_called=time(); call_out( really_call, 0, args ); } } }; // call_out is not really useful here, since we probably want to run // the signal handler immediately, not whenever the backend thread // is available. /per // // Calling directly like this may however lead to recursive mutex // lock errors. The problem cannot be solved using lock(2) since the // internal structures may be in an inconsistent state from the // previous call, and waiting for the lock probably leads to a // deadlock. /noring // // But on the other hand, you are not very likely to have any mutex // locks in an unthreaded pike, since it's quite impossible. /per // // But still, the problems with inconsistent internal states are // there. The API:s for many (thread safe) objects are designed to // only allow one (1) caller at any given time. It's a bug if this // restriction can be circumvented using signals. I suggest that // Thread.Mutex takes care of this problem in non-threaded mode. // / noring // // Apparantly it already did that. :-) // // I also fixed SIGHUP to be somewhat more asynchronous. // // I also added a rather small amount of magic so that it is called // asynchronously the first time it is received, but repeated // signals are not called asynchronously unless the first signal // handler was actually called. // // Except for the SIGQUIT signal, which dumps a backtrace. It would // be an excercise in futility to call that one asynchronously. // // I hope that this will solve all your problems. /per if( really > 0 ) return lambda( mixed ... args ){ call_out( f, 0, @args ); }; if( really < 0 ) return f; return SignalAsyncVerifier( f )->call; } #ifdef THREADS protected Thread.Queue bg_queue = Thread.Queue(); protected int bg_process_running; // Use a time buffer to strike a balance if the server is busy and // always have at least one busy thread: The maximum waiting time in // that case is somewhere between bg_time_buffer_min and // bg_time_buffer_max. If there are only short periods of time between // the queue runs, the max waiting time will shrink towards the // minimum. protected constant bg_time_buffer_max = 30; protected constant bg_time_buffer_min = 0; protected int bg_last_busy = 0; protected void bg_process_queue() { if (bg_process_running) return; // Relying on the interpreter lock here. bg_process_running = 1; int maxbeats = min (time() - bg_last_busy, bg_time_buffer_max) * (int) (1 / 0.04); #ifndef NO_SLOW_REQ_BT Pike.Backend monitor; mixed call_out; #endif if (mixed err = catch { while (bg_queue->size() && !shutdown_started) { // Not a race here since only one thread is reading the queue. array task = bg_queue->read(); // Wait a while if another thread is busy already. if (busy_threads > 1) { for (maxbeats = max (maxbeats, (int) (bg_time_buffer_min / 0.04)); busy_threads > 1 && maxbeats > 0; maxbeats--) // Pike implementation note: If 0.02 or smaller, we'll busy wait here. sleep (0.04); bg_last_busy = time(); } #ifdef DEBUG_BACKGROUND_RUN report_debug ("background_run run %s (%s) [%d jobs left in queue]\n", functionp (task[0]) ? sprintf ("%s: %s", Function.defined (task[0]), master()->describe_function (task[0])) : programp (task[0]) ? sprintf ("%s: %s", Program.defined (task[0]), master()->describe_program (task[0])) : sprintf ("%O", task[0]), map (task[1], lambda (mixed arg) {return sprintf ("%O", arg);}) * ", ", bg_queue->size()); #endif float task_vtime, task_rtime; #ifndef NO_SLOW_REQ_BT if ((monitor = slow_req_monitor) && slow_req_timeout > 0.0) { call_out = monitor->call_out (dump_slow_req, slow_req_timeout, this_thread(), slow_req_timeout); int start_hrtime = gethrtime (1); task_vtime = gauge { if (task[0]) // Ignore things that have become destructed. // Note: BackgroundProcess.repeat assumes that there are // exactly two refs to task[0] during the call below. task[0] (@task[1]); }; task_rtime = (gethrtime (1) - start_hrtime) / 1e9; monitor->remove_call_out (call_out); } else #endif { int start_hrtime = gethrtime (1); task_vtime = gauge { if (task[0]) task[0] (@task[1]); }; task_rtime = (gethrtime (1) - start_hrtime) / 1e9; } if (task_rtime > 60.0) report_warning ("Warning: Background job took more than one minute " "(%g s real time and %g s cpu time):\n" " %s (%s)\n%s", task_rtime, task_vtime, functionp (task[0]) ? sprintf ("%s: %s", Function.defined (task[0]), master()->describe_function (task[0])) : programp (task[0]) ? sprintf ("%s: %s", Program.defined (task[0]), master()->describe_program (task[0])) : sprintf ("%O", task[0]), map (task[1], lambda (mixed arg) {return sprintf ("%O", arg);}) * ", ", bg_queue->size() ? (bg_queue->size() > 1 ? " " + bg_queue->size() + " more jobs in the " "background queue were delayed.\n" : " 1 more job in the background queue was delayed.\n"): ""); #ifdef DEBUG_BACKGROUND_RUN else report_debug ("background_run done, " "took %g ms cpu time and %g ms real time\n", task_vtime * 1000, task_rtime * 1000); #endif if (busy_threads > 1) bg_last_busy = time(); } }) { #ifndef NO_SLOW_REQ_BT if (call_out) monitor->remove_call_out (call_out); #endif bg_process_running = 0; handle (bg_process_queue); throw (err); } bg_process_running = 0; } #endif mixed background_run (int|float delay, function func, mixed... args) //! Enqueue a task to run in the background in a way that makes as //! little impact as possible on the incoming requests. No matter how //! many tasks are queued to run in the background, only one is run at //! a time. The tasks won't be starved regardless of server load, //! though. //! //! The function @[func] will be enqueued after approximately @[delay] //! seconds, to be called with the rest of the arguments as its //! arguments. //! //! In a multithreaded server the function will be executed in one of //! the handler threads. The function is executed in the backend //! thread if no thread support is available, although that //! practically never occurs anymore. //! //! To avoid starving other background jobs, the function should never //! run for a long time. Instead do another call to @[background_run] //! to queue it up again after some work has been done, or use //! @[BackgroundProcess]. //! //! @returns //! If the function is queued for execution right away then zero is //! returned. Otherwise its call out identifier is returned, which can //! be used with @[find_call_out] or @[remove_call_out]. { // FIXME: Make it possible to associate the background job with a // RoxenModule or Configuration, so that report_error etc can log in // a good place. #ifdef DEBUG_BACKGROUND_RUN report_debug ("background_run enqueue %s (%s) [%d jobs in queue]\n", functionp (func) ? sprintf ("%s: %s", Function.defined (func), master()->describe_function (func)) : programp (func) ? sprintf ("%s: %s", Program.defined (func), master()->describe_program (func)) : sprintf ("%O", func), map (args, lambda (mixed arg) {return sprintf ("%O", arg);}) * ", ", bg_queue->size()); #endif #ifdef THREADS if (!hold_wakeup_cond) // stop_handler_threads is running; ignore more work. return 0; function enqueue = lambda() { bg_queue->write (({func, args})); if (!bg_process_running) handle (bg_process_queue); }; // Be careful to zero enqueue below to avoid trampoline garbage. if (delay) // A trick to zero enqueue without putting the call_out return // value into a local variable. return call_out (enqueue, (enqueue = 0, delay)); else { enqueue(); enqueue = 0; return 0; } #else // Can't do much better when we haven't got threads.. return call_out (func, delay, @args); #endif } class BackgroundProcess //! A class to do a task repeatedly in the background, in a way that //! makes as little impact as possible on the incoming requests (using //! @[background_run]). //! //! The user must keep a reference to this object, otherwise it will remove //! itself and the callback won't be called anymore. { int|float period; int stopping = 0; protected void repeat (function func, mixed args) { // Got a minimum of four refs to this: // o One in the task array in bg_process_queue. // o One on the stack in the call in bg_process_queue. // o One as current_object in the stack frame. // o One on the stack as argument to _refs. int self_refs = _refs (this); #ifdef DEBUG if (self_refs < 4) error ("Minimum ref calculation wrong - have only %d refs.\n", self_refs); #endif if (stopping || (self_refs <= 4) || !func) return; mixed err = catch { func (@args); }; if (err) { catch { report_error(LOC_M(66, "Uncaught error in background process:") + "%s\n", describe_backtrace(err)); }; } background_run (period, repeat, func, args); } //! @decl void set_period (int|float period); //! //! Changes the period to @[period] seconds between calls. //! //! @note //! This does not change the currently ongoing period, if any. That //! might be remedied. void set_period (int|float period_) { period = period_; } //! @decl protected void create (int|float period, function func, mixed... args); //! //! The function @[func] will be called with the following arguments //! after approximately @[period] seconds, and then kept being //! called with approximately that amount of time between each call. //! //! The repetition will stop if @[stop] is called, or if @[func] //! throws an error. protected void create (int|float period_, function func, mixed... args) { period = period_; background_run (period, repeat, func, args); } void stop() //! Sets a flag to stop the succession of calls. { stopping = 1; } string _sprintf() {return "BackgroundProcess()";} } mapping get_port_options( string key ) //! Get the options for the key 'key'. //! The intepretation of the options is protocol specific. { return (query( "port_options" )[ key ] || ([])); } void set_port_options( string key, mapping value ) //! Set the options for the key 'key'. //! The intepretation of the options is protocol specific. { mapping q = query("port_options"); q[ key ] = value; set( "port_options" , q ); save( ); } #ifdef DEBUG_URL2CONF #define URL2CONF_MSG(X...) report_debug (X) #else #define URL2CONF_MSG(X...) #endif protected mapping(string:int(0..1)) host_is_local_cache = ([]); //! Check if @[hostname] is local to this machine. int(0..1) host_is_local(string hostname) { int(0..1) res; if (!zero_type(res = host_is_local_cache[hostname])) return res; // Look up the IP. string ip = blocking_host_to_ip(hostname); // Can we bind to it? Stdio.Port port = Stdio.Port(); // bind() can trow error if ip is an invalid hostname. catch { res = port->bind(0, 0, ip); }; destruct(port); return host_is_local_cache[hostname] = res; } array(Protocol|mapping(string:mixed)) find_port_for_url ( Standards.URI url, void|Configuration only_this_conf) // Returns ({port_obj, url_data}) for a url that matches the given // one. url_data is the mapping for the url in port_obj->urls. If // only_this_conf is given then only ports for that configuration are // searched. { // Cannot use the uri formatter in Standards.URI here since we // always want the port number to be present. string host = url->host; if (has_value (host, ":")) host = "[" + (Protocols.IPv6.normalize_addr_basic (host) || host) + "]"; string url_with_port = sprintf ("%s://%s:%d%s", url->scheme, host, url->port, sizeof (url->path) ? url->path : "/"); URL2CONF_MSG("URL with port: %s\n", url_with_port); foreach (urls; string u; mapping(string:mixed) q) { URL2CONF_MSG("Trying %O:%O\n", u, q); if( glob( u+"*", url_with_port ) ) { URL2CONF_MSG("glob match\n"); if (Protocol p = q->port) if (mapping(string:mixed) url_data = p->find_url_data_for_url (url_with_port, 0, 0)) { Configuration c = url_data->conf; URL2CONF_MSG("Found config: %O\n", url_data->conf); if ((only_this_conf && (c != only_this_conf)) || (sscanf (u, "%*s://%*[^*?]%*c") == 3 && // u contains * or ?. // u is something like "http://*:80/" (!host_is_local(url->host)))) { // Bad match. URL2CONF_MSG("Bad match: only_this_conf:%O, host_is_local:%O\n", (only_this_conf && (c == only_this_conf)), (!host_is_local(url->host))); c = 0; continue; } URL2CONF_MSG("Result: %O\n", c); return ({p, url_data}); } } } return ({0, 0}); } Configuration find_configuration_for_url(Standards.URI url, void|Configuration only_this_conf, void|array(Protocol) return_port) //! Tries to to determine if a request for the given url would end up //! in this server, and if so returns the corresponding configuration. //! //! If @[only_this_conf] has been specified only matches against it //! will be returned. { [Protocol port_obj, mapping(string:mixed) url_data] = find_port_for_url (url, only_this_conf); if (return_port) return_port[0] = port_obj; return url_data && url_data->conf; } class InternalRequestID //! ID for internal requests that are not linked to any real request. { inherit RequestID; this_program set_path( string f ) { raw_url = Roxen.http_encode_invalids( f ); if( strlen( f ) > 5 ) { string a; switch( f[1] ) { case '<': if (sscanf(f, "/<%s>/%s", a, f)==2) { config = (multiset)(a/","); f = "/"+f; } // intentional fall-through case '(': if(strlen(f) && sscanf(f, "/(%s)/%s", a, f)==2) { prestate = (multiset)( a/","-({""}) ); f = "/"+f; } } } not_query = Roxen.simplify_path( scan_for_query( f ) ); return this; } this_program set_url( string url ) { object uri = Standards.URI(url); prot = upper_case(uri->scheme); misc->host = uri->host; if ((prot == "HTTP" && uri->port != 80) || (prot == "HTTPS" && uri->port != 443)) misc->host += ":" + uri->port; string path = uri->path; raw_url = path; method = "GET"; raw = "GET " + raw_url + " HTTP/1.1\r\n\r\n"; [port_obj, mapping(string:mixed) url_data] = find_port_for_url (uri, 0); if (url_data) { conf = url_data->conf; if (!conf->inited) conf->enable_all_modules(); if (string config_path = url_data->path) adjust_for_config_path (config_path); } return set_path( raw_url ); } protected string _sprintf() { return sprintf("RequestID(conf=%O; not_query=%O)", conf, not_query ); } protected void create() { client = ({ "Roxen" }); prot = "INTERNAL"; method = "GET"; real_variables = ([]); variables = FakedVariables( real_variables ); root_id = this_object(); misc = ([ "pref_languages": PrefLanguages(), "cacheable": INITIAL_CACHEABLE, ]); connection_misc = ([]); cookies = CookieJar(); throttle = ([]); client_var = ([]); request_headers = ([]); prestate = (<>); config = (<>); supports = (<>); pragma = (<>); rest_query = ""; extra_extension = ""; remoteaddr = "127.0.0.1"; } } class Protocol //! The basic protocol. //! Implements reference handling, finding Configuration objects //! for URLs, and the bind/accept handling. { protected Stdio.Port port_obj; inherit "basic_defvar"; int bound; //! 0 if the port isn't bound, 1 if it is, and -1 if it binding it //! failed with EADDRINUSE when told to ignore that error. //! //! @note //! The -1 state should be uncommon since @[register_url] should //! remove such objects after the failed bind attempt. string path; constant name = "unknown"; constant supports_ipless = 0; //! If true, the protocol handles ip-less virtual hosting constant requesthandlerfile = ""; //! Filename of a by-connection handling class. It is also possible //! to set the 'requesthandler' class member in a overloaded create //! function. constant default_port = 4711; //! If no port is specified in the URL, use this one string url_prefix = name + "://"; int port; //! The currently bound portnumber string ip; //! The canonical IP-number (0 for ANY) this port is bound to. //! //! IPv6 numbers are in colon separated four-digit lower-case hexadecimal //! notation with the first longest sequence of zeros compressed. int refs; //! The number of references to this port. This is the same as the //! size of @[urls] and @[sorted_urls]. program requesthandler; //! The per-connection request handling class array(string) sorted_urls = ({}); //! Sorted by length, longest first mapping(string:mapping(string:mixed)) urls = ([]); //! .. url -> ([ "conf":.., ... ]) //! //! Indexed by URL. The following data is stored: //! @mapping //! @member Configuration "conf" //! The Configuration object for this URL. //! @member string "hostname" //! The hostname from the URL. //! @member string|void "path" //! The path (if any) from the URL. //! @member Protocol "port" //! The protocol handler for this URL. //! @member int "mib_version" //! (Only SNMP). The version number for the configuration MIB //! tree when it was last merged. //! @endmapping mapping(Configuration:mapping(string:mixed)) conf_data = ([]); //! Maps the configuration objects to the data mappings in @[urls]. void ref(string name, mapping(string:mixed) data) //! Add a ref for the URL 'name' with the data 'data' { if(urls[name]) { conf_data[urls[name]->conf] = urls[name] = data; return; // only ref once per URL } if (!refs) path = data->path; else if (path != (data->path || "")) path = 0; refs++; mu = 0; conf_data[data->conf] = urls[name] = data; sorted_urls = Array.sort_array(indices(urls), lambda(string a, string b) { return sizeof(a)<sizeof(b); }); } void unref(string _name) //! Remove a ref for the URL '_name' { // if(!urls[name]) // only unref once // return; m_delete(conf_data, urls[_name]->conf); m_delete(urls, _name); if (!path) { array(string) paths = Array.uniq (values (urls)->path); if (sizeof (paths) == 1) path = paths[0]; } sorted_urls -= ({_name}); #ifdef PORT_DEBUG report_debug("Protocol(%s)->unref(%O): refs:%d\n", get_url(), _name, refs); #endif /* PORT_DEBUG */ if( !--refs ) { if (retries) { remove_call_out(bind); } if (port_obj) { destruct(port_obj); } port_obj = 0; if (open_ports[name]) { if (open_ports[name][ip]) { m_delete(open_ports[name][ip], port); if(!sizeof(open_ports[name][ip])) { // Make sure the entries for IPv4 and IPv6 ANY are left alone. if (ip && ip != "::") m_delete(open_ports[name], ip); } } if (sizeof(open_ports[name]) <= 2) { // Only ANY left. int empty = 1; foreach(open_ports[name]; string ip; mapping m) { if (sizeof(m)) { empty = 0; break; } } if (empty) m_delete(open_ports, name); } } any_port = 0; // Avoid possibly cyclic ref. //destruct( ); // Close the port. } } Stdio.File accept() { return port_obj->accept(); } string query_address() { return port_obj && port_obj->query_address(); } mapping(string:mixed) mu; string rrhf; protected void got_connection() { Stdio.File q; while( q = accept() ) { if( !requesthandler && rrhf ) { requesthandler = (program)(rrhf); } Configuration c; if( refs < 2 ) { if(!mu) { mu = get_iterator(urls)->value(); if(!(c=mu->conf)->inited ) { handle (lambda () { c->enable_all_modules(); call_out (requesthandler, 0, q, this, c); }); return; } } else c = mu->conf; } requesthandler( q, this_object(), c ); } } private Protocol any_port; mapping(string:mixed) find_url_data_for_url (string url, int no_default, RequestID id) { if( refs == 1 ) { if (!no_default) { if(!mu) mu=get_iterator(urls)->value(); URL2CONF_MSG ("%O %O Only one configuration: %O\n", this, url, mu->conf); return mu; } } else if (!refs) { URL2CONF_MSG("%O %O No active URLS!\n", this, url); return 0; } URL2CONF_MSG("sorted_urls: %O\n" "url: %O\n", sorted_urls, url); // The URLs are sorted from longest to shortest, so that short // urls (such as http://*/) will not match before more complete // ones (such as http://*.roxen.com/) foreach( sorted_urls, string in ) { if( glob( in+"*", url ) ) { URL2CONF_MSG ("%O %O sorted_urls: %O\n", this, url, urls[in]->conf); return urls[in]; } } if( no_default ) { URL2CONF_MSG ("%O %O no default\n", this, url); return 0; } // Note: The docs for RequestID.misc->default_conf has a // description of this fallback procedure. // No host matched, or no host header was included in the request. // Is the URL in the '*' ports? if (!any_port) any_port = open_ports[ name ][ 0 ][ port ]; if (any_port && any_port != this) if (mapping(string:mixed) u = any_port->find_url_data_for_url (url, 1, id)) { URL2CONF_MSG ("%O %O found on ANY port: %O\n", this, url, u->conf); if (id) { id->misc->defaulted_conf = 1; id->port_obj = any_port; } return u; } // No. We have to default to one of the other ports. // It might be that one of the servers is tagged as a default server. mapping(Configuration:int(1..1)) choices = ([]); foreach( configurations, Configuration c ) if( c->query( "default_server" ) ) choices[c] = 1; if( sizeof( choices ) ) { // Pick a default server bound to this port foreach (urls;; mapping cc) if( choices[ cc->conf ] ) { URL2CONF_MSG ("%O %O conf in choices: %O\n", this, url, cc->conf); if (id) id->misc->defaulted_conf = 2; return cc; } } return 0; } Configuration find_configuration_for_url( string url, RequestID id ) //! Given a url and requestid, try to locate a suitable configuration //! (virtual site) for the request. //! This interface is not at all set in stone, and might change at //! any time. { mapping(string:mixed) url_data = find_url_data_for_url (url, 0, id); if (!url_data) { // Pick the first default server available. FIXME: This makes // it impossible to handle the server path correctly. foreach (configurations, Configuration c) if (c->query ("default_server")) { URL2CONF_MSG ("%O %O any default server: %O\n", this, url, c); if (id) id->misc->defaulted_conf = 3; if(!c->inited) // FIXME: We can be called from the backend thread, so // this should be queued for a handler thread. c->enable_all_modules(); return c; } // if we end up here, there is no default port at all available // so grab the first configuration that is available at all. // We choose the last entry in sorted_urls since that's the most // generic one and therefore probably the best option for a // fallback. url_data = urls[sorted_urls[-1]]; if (id) { id->misc->defaulted_conf = 4; id->misc->defaulted=1; // Compat. } URL2CONF_MSG ("%O %O last in sorted_urls: %O\n", this, url, url_data->conf); } // It's assumed nothing below uses data in this object, since // find_url_data_for_url might have switched Protocol object. string config_path = url_data->path; if (config_path && id && id->adjust_for_config_path) id->adjust_for_config_path (config_path); Configuration c = url_data->conf; if(!c->inited) // FIXME: We can be called from the backend thread, so this // should be queued for a handler thread. c->enable_all_modules(); return c; } mixed query_option( string x ) //! Query the port-option 'x' for this port. { return query( x ); } string get_key() //! Return the key used for this port (protocol:ip:portno) { if (ip == "::") return name + ":0:" + port; else return name+":"+ip+":"+port; } string get_url() //! Return the port on URL form. { return (string) name + "://" + (!ip ? "*" : has_value (ip, ":") ? "[" + ip + "]" : ip) + ":" + port + "/"; } void save() //! Save all port options { set_port_options( get_key(), mkmapping( indices(variables), map(indices(variables),query))); } void restore() //! Restore all port options from saved values { foreach( (array)get_port_options( get_key() ), array kv ) set( kv[0], kv[1] ); } protected int retries; protected void bind (void|int ignore_eaddrinuse) { if (bound) return; if (!port_obj) port_obj = Stdio.Port(); Privs privs = Privs (sprintf ("Binding %s", get_url())); if (port_obj->bind(port, got_connection, ip)) { privs = 0; bound = 1; return; } privs = 0; #if constant(System.EAFNOSUPPORT) if (port_obj->errno() == System.EAFNOSUPPORT) { // Fail permanently. error("Invalid address " + ip); } #endif /* System.EAFNOSUPPORT */ #if constant(System.EADDRINUSE) if (port_obj->errno() == System.EADDRINUSE) { if (ignore_eaddrinuse) { // Told to ignore the bind problem. bound = -1; return; } if (retries++ < 10) { // We may get spurious failures on rebinding ports on some OS'es // (eg Linux, WIN32). See [bug 3031]. report_error(LOC_M(6, "Failed to bind %s (%s)")+"\n", get_url(), strerror(port_obj->errno())); report_notice(LOC_M(62, "Attempt %d. Retrying in 1 minute.")+"\n", retries); call_out(bind, 60); } } else #endif /* constant(System.EADDRINUSE) */ { report_error(LOC_M(6, "Failed to bind %s (%s)")+"\n", get_url(), strerror(port_obj->errno())); #if 0 werror (describe_backtrace (backtrace())); #endif } } string canonical_ip(string i) { if (!i) return 0; if (has_value(i, ":")) return Protocols.IPv6.normalize_addr_short (i); else { // IPv4 array(int) segments = array_sscanf(i, "%d.%d.%d.%d"); string bytes; switch(sizeof(segments)) { default: case 4: bytes = sprintf("%1c%1c%1c%1c", @segments); break; case 0: return 0; // ANY. case 1: /* When only one part is given, the value is stored directly in * the network address without any byte rearrangement. */ bytes = sprintf("%4c", @segments); break; case 2: /* When a two part address is supplied, the last part is inter- * preted as a 24-bit quantity and placed in the right most * three bytes of the network address. This makes the two part * address format convenient for specifying Class A network * addresses as net.host. */ bytes = sprintf("%1c%3c", @segments); break; case 3: /* When a three part address is specified, the last part is * interpreted as a 16-bit quantity and placed in the right * most two bytes of the network address. This makes the three * part address format convenient for specifying Class B net- * work addresses as 128.net.host. */ bytes = sprintf("%1c%1c%2c", @segments); break; } if (bytes == "\0\0\0\0") return 0; // ANY. return sprintf("%d.%d.%d.%d", @((array(int))bytes)); } } protected void setup (int pn, string i) { port = pn; ip = canonical_ip(i); restore(); if (sizeof(requesthandlerfile)) { if( file_stat( "../local/"+requesthandlerfile ) ) rrhf = "../local/"+requesthandlerfile; else rrhf = requesthandlerfile; DDUMP( rrhf ); #ifdef DEBUG if( !requesthandler ) requesthandler = (program)(rrhf); #endif } bound = 0; port_obj = 0; retries = 0; } protected void create( int pn, string i, void|int ignore_eaddrinuse ) //! Constructor. Bind to the port 'pn' ip 'i' { setup (pn, i); bind (ignore_eaddrinuse); } protected string _sprintf( ) { return "Protocol(" + get_url() + ")"; } } #if constant(SSL.sslfile) class SSLProtocol //! Base protocol for SSL ports. Exactly like Port, but uses SSL. { inherit Protocol; // SSL context SSL.context ctx = SSL.context(); int cert_failure; protected void cert_err_unbind() { if (bound > 0) { port_obj->close(); report_warning ("TLS port %s closed.\n", get_url()); bound = 0; } } #define CERT_WARNING(VAR, MSG, ARGS...) do { \ string msg = (MSG); \ array args = ({ARGS}); \ if (sizeof (args)) msg = sprintf (msg, @args); \ report_warning ("TLS port %s: %s", get_url(), msg); \ (VAR)->add_warning (msg); \ } while (0) #define CERT_ERROR(VAR, MSG, ARGS...) do { \ string msg = (MSG); \ array args = ({ARGS}); \ if (sizeof (args)) msg = sprintf (msg, @args); \ report_error ("TLS port %s: %s", get_url(), msg); \ (VAR)->add_warning (msg); \ cert_err_unbind(); \ cert_failure = 1; \ return; \ } while (0) void certificates_changed(Variable.Variable|void ignored, void|int ignore_eaddrinuse) { int old_cert_failure = cert_failure; string raw_keydata; array(string) certificates = ({}); array(object) decoded_certs = ({}); Variable.Variable Certificates = getvar("ssl_cert_file"); object privs = Privs("Reading cert file"); foreach(map(Certificates->query(), String.trim_whites), string cert_file) { string raw_cert; SSL3_WERR (sprintf ("Reading cert file %O", cert_file)); if( catch{ raw_cert = lopen(cert_file, "r")->read(); } ) { CERT_WARNING (Certificates, LOC_M(8, "Reading certificate file %O failed: %s\n"), cert_file, strerror (errno())); continue; } object msg = Tools.PEM.pem_msg()->init( raw_cert ); object part = msg->parts["CERTIFICATE"] || msg->parts["X509 CERTIFICATE"]; string cert; if (msg->parts["RSA PRIVATE KEY"] || msg->parts["DSA PRIVATE KEY"]) { raw_keydata = raw_cert; } if (!part || !(cert = part->decoded_body())) { CERT_WARNING (Certificates, LOC_M(10, "No certificate found in %O.\n"), cert_file); continue; } certificates += ({ cert }); // FIXME: Support PKCS7 object tbs = Tools.X509.decode_certificate (cert); if (!tbs) { CERT_WARNING (Certificates, LOC_M(13, "Certificate not valid (DER).\n")); continue; } decoded_certs += ({tbs}); } if (!sizeof(decoded_certs)) { report_error ("TLS port %s: %s", get_url(), LOC_M(63,"No certificates found.\n")); cert_err_unbind(); cert_failure = 1; return; } Variable.Variable KeyFile = getvar("ssl_key_file"); if( strlen(KeyFile->query())) { SSL3_WERR (sprintf ("Reading key file %O", KeyFile->query())); if (catch{ raw_keydata = lopen(KeyFile->query(), "r")->read(); } ) CERT_ERROR (KeyFile, LOC_M(9, "Reading key file %O failed: %s\n"), KeyFile->query(), strerror (errno())); } else KeyFile = Certificates; privs = 0; if (!raw_keydata) CERT_ERROR (KeyFile, LOC_M (17,"No private key found.\n")); object msg = Tools.PEM.pem_msg()->init( raw_keydata ); SSL3_WERR(sprintf("key file contains: %O", indices(msg->parts))); object part; if (part = msg->parts["RSA PRIVATE KEY"]) { string key; if (!(key = part->decoded_body())) CERT_ERROR (KeyFile, LOC_M(11,"Private rsa key not valid")+" (PEM).\n"); object rsa = Standards.PKCS.RSA.parse_private_key(key); if (!rsa) CERT_ERROR (KeyFile, LOC_M(11,"Private rsa key not valid")+" (DER).\n"); ctx->rsa = rsa; SSL3_WERR(sprintf("RSA key size: %d bits", rsa->rsa_size())); if (rsa->rsa_size() > 512) { /* Too large for export */ ctx->short_rsa = Crypto.RSA()->generate_key(512, ctx->random); // ctx->long_rsa = Crypto.RSA()->generate_key(rsa->rsa_size(), ctx->random); } ctx->rsa_mode(); array(int) key_matches = map(decoded_certs, lambda (object tbs) { return tbs->public_key->rsa->public_key_equal (rsa); }); int num_key_matches; // DWIM: Make sure the main cert comes first. array(string) new_certificates = allocate(sizeof(certificates)); int i,j; for (i=0; i < sizeof(certificates); i++) { if (key_matches[i]) { new_certificates[j++] = certificates[i]; num_key_matches++; } } for (i=0; i < sizeof(certificates); i++) { if (!key_matches[i]) { new_certificates[j++] = certificates[i]; } } if( !num_key_matches ) CERT_ERROR (KeyFile, LOC_M(14, "Certificate and private key do not match.\n")); ctx->certificates = new_certificates; } else if (part = msg->parts["DSA PRIVATE KEY"]) { string key; if (!(key = part->decoded_body())) CERT_ERROR (KeyFile, LOC_M(15,"Private dsa key not valid")+" (PEM).\n"); object dsa = Standards.PKCS.DSA.parse_private_key(key); if (!dsa) CERT_ERROR (KeyFile, LOC_M(15,"Private dsa key not valid")+" (DER).\n"); SSL3_WERR(sprintf("Using DSA key.")); //dsa->use_random(ctx->random); ctx->dsa = dsa; /* Use default DH parameters */ #if constant(SSL.Cipher) ctx->dh_params = SSL.Cipher.DHParameters(); #else ctx->dh_params = SSL.cipher()->dh_parameters(); #endif ctx->dhe_dss_mode(); // FIXME: Add cert <-> private key check. ctx->certificates = certificates; } else CERT_ERROR (KeyFile, LOC_M(17,"No private key found.\n")); #if EXPORT ctx->export_mode(); #endif if (!bound) { bind (ignore_eaddrinuse); if (old_cert_failure && bound) report_notice (LOC_M(64, "TLS port %s opened.\n"), get_url()); } } class CertificateListVariable { inherit Variable.FileList; string doc() { return sprintf(::doc() + "\n", combine_path(getcwd(), "../local"), getcwd()); } } class KeyFileVariable { inherit Variable.String; string doc() { return sprintf(::doc() + "\n", combine_path(getcwd(), "../local"), getcwd()); } } SSL.sslfile accept() { Stdio.File q = ::accept(); if (q) return SSL.sslfile (q, ctx); return 0; } protected void bind (void|int ignore_eaddrinuse) { // Don't bind if we don't have correct certs. if (!ctx->certificates) return; ::bind (ignore_eaddrinuse); } void create(int pn, string i, void|int ignore_eaddrinuse) { ctx->random = Crypto.Random.random_string; set_up_ssl_variables( this_object() ); ::setup(pn, i); certificates_changed (0, ignore_eaddrinuse); // Install the change callbacks here to avoid duplicate calls // above. // FIXME: Both variables ought to be updated on save before the // changed callback is called. Currently you can get warnings // that the files don't match if you update both variables // at the same time. getvar ("ssl_cert_file")->set_changed_callback (certificates_changed); getvar ("ssl_key_file")->set_changed_callback (certificates_changed); } string _sprintf( ) { return "SSLProtocol(" + get_url() + ")"; } } #endif mapping(string:program/*(Protocol)*/) build_protocols_mapping() { mapping protocols = ([]); int st = gethrtime(); report_debug("Protocol handlers ... \b"); #ifndef DEBUG class lazy_load( string prog, string name ) { program real; protected void realize() { if( catch { DDUMP( prog ); real = (program)prog; protocols[name] = real; } ) report_error("Failed to compile protocol handler for "+name+"\n"); } Protocol `()(mixed ... x) { if(!real) realize(); return real(@x); }; mixed `->( string x ) { if(!real) realize(); return predef::`->(real, x); } }; #endif foreach( glob( "prot_*.pike", get_dir("protocols") ), string s ) { sscanf( s, "prot_%s.pike", s ); #if !constant(SSL.sslfile) switch( s ) { case "https": case "ftps": continue; } #endif report_debug( "\b%s \b", s ); catch { #ifdef DEBUG protocols[ s ] = (program)("protocols/prot_"+s+".pike"); #else protocols[ s ] = lazy_load( ("protocols/prot_"+s+".pike"),s ); #endif }; } foreach( glob("prot_*.pike",get_dir("../local/protocols")||({})), string s ) { sscanf( s, "prot_%s.pike", s ); #if !constant(SSL.sslfile) switch( s ) { case "https": case "ftps": continue; } #endif report_debug( "\b%s \b", s ); catch { #ifdef DEBUG protocols[ s ] = (program)("../local/protocols/prot_"+s+".pike"); #else protocols[ s ] = lazy_load( ("../local/protocols/prot_"+s+".pike"),s ); #endif }; } report_debug("\bDone [%.1fms]\n", (gethrtime()-st)/1000.0 ); return protocols; } mapping(string:program/*(Protocol)*/) protocols; // prot:ip:port ==> Protocol. mapping(string:mapping(string:mapping(int:Protocol))) open_ports = ([ ]); // url:"port" ==> Protocol. mapping(string:mapping(string:Configuration|Protocol|string|array(Protocol))) urls = ([]); array sorted_urls = ({}); array(string) find_ips_for( string what ) { if( what == "*" || lower_case(what) == "any" ) return ({ 0, #if constant(__ROXEN_SUPPORTS_IPV6__) "::", #endif /* __ROXEN_SUPPORTS_IPV6__ */ }); // ANY if( is_ip( what ) ) return ({ what }); else if (has_prefix (what, "[") && what[-1] == ']') { /* RFC 3986 3.2.2. Host * * host = IP-literal / IPv4address / reg-name * IP-literal = "[" ( IPv6address / IPvFuture ) "]" * IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" ) * * IPv6address is as in RFC3513. */ return ({ what[1..sizeof(what)-2] }); } else if (has_suffix(lower_case(what), ".ipv6")) { // draft-masinter-url-ipv6-00 3 // // a) replace every colon ":" with a "-" // b) append ".ipv6" to the end. return ({ replace(what[..sizeof(what)-6], "-", ":") }); } array res = gethostbyname( what ); if( res && sizeof( res[1] ) ) return Array.uniq(res[1]); report_error(LOC_M(46, "Cannot possibly bind to %O, that host is " "unknown. Substituting with ANY")+"\n", what); return 0; // FAIL } string normalize_url(string url, void|int port_match_form) //! Normalizes the given url to a short form. //! //! If @[port_match_form] is set, it normalizes to the form that is //! used for port matching, i.e. what //! @[roxen.Protocol.find_configuration_for_url] expects. { if (!sizeof (url - " " - "\t")) return ""; Standards.URI ui = Standards.URI(url); string host = ui->host; if (lower_case (host) == "any" || host == "::") host = "*"; else { // Note: zone_to_ascii() can throw errors on invalid hostnames. if (catch { // FIXME: Maybe Standards.URI should do this internally? host = lower_case(Standards.IDNA.zone_to_ascii (host)); }) { host = lower_case(host); } } if (has_value (host, ":")) if (string h = port_match_form ? Protocols.IPv6.normalize_addr_basic (host) : Protocols.IPv6.normalize_addr_short (host)) { ui->host = h; host = "[" + h + "]"; } string protocol = ui->scheme; if (host == "" || !protocols[protocol]) return ""; if (port_match_form) { int port = ui->port || protocols[protocol]->default_port; string path = ui->path; if (path) { if (has_suffix(path, "/")) path = path[..<1]; } else path = ""; return sprintf ("%s://%s:%d%s/", protocol, host, port, // If the path is set it's assumed to begin with a // "/", but not end with one. path); } else { ui->fragment = 0; return (string) ui; } } void unregister_url(string url, Configuration conf) { string ourl = url; if (!sizeof(url = normalize_url(url, 1))) return; report_debug ("Unregister %s%s.\n", normalize_url (ourl), conf ? sprintf (" for %O", conf->query_name()) : ""); if (urls[url] && (!conf || !urls[url]->conf || (urls[url]->conf == conf)) && urls[url]->port) { urls[ url ]->port->unref(url); m_delete( urls, url ); m_delete( urls, ourl ); sort_urls(); } } array all_ports( ) { return Array.uniq( values( urls )->port )-({0}); } Protocol find_port( string name ) { foreach( all_ports(), Protocol p ) if( p->get_key() == name ) return p; } void sort_urls() { sorted_urls = indices( urls ); sort( map( map( sorted_urls, strlen ), `-), sorted_urls ); } int register_url( string url, Configuration conf ) { string ourl = url; if (!sizeof (url - " " - "\t")) return 1; Standards.URI ui = Standards.URI(url); mapping opts = ([]); string a, b; foreach( (ui->fragment||"")/";", string x ) { sscanf( x, "%s=%s", a, b ); opts[a]=b; } if( (int)opts->nobind ) { report_warning( LOC_M(61,"Not binding the port %O - disabled in configuration.")+"\n", (string) ui ); return 0; } string display_url = normalize_url (url, 0); url = normalize_url (url, 1); ui = Standards.URI (url); string protocol = ui->scheme; string host = ui->host; if (host == "" || !protocols[protocol]) { report_error(LOC_M(19,"Bad URL %O for server %O.")+"\n", ourl, conf->query_name()); } int port = ui->port || protocols[protocol]->default_port; string path = ui->path; if (has_suffix(path, "/")) path = path[..<1]; if (path == "") path = 0; if( urls[ url ] ) { if( !urls[ url ]->port ) m_delete( urls, url ); else if( urls[ url ]->conf ) { if( urls[ url ]->conf != conf ) { report_error(LOC_M(20, "Cannot register URL %s - " "already registered by %s.")+"\n", display_url, urls[ url ]->conf->name); return 0; } urls[ url ]->port->ref(url, urls[url]); return 1; } else urls[ url ]->port->unref( url ); } program prot; if( !( prot = protocols[ protocol ] ) ) { report_error(LOC_M(21, "Cannot register URL %s - " "cannot find the protocol %s.")+"\n", display_url, protocol); return 0; } urls[ url ] = ([ "conf":conf, "path":path, "hostname": host ]); urls[ ourl ] = urls[url] + ([]); sorted_urls += ({ url }); array(string)|int(-1..0) required_hosts; if (is_ip(host)) required_hosts = ({ host }); else if(!sizeof(required_hosts = filter(replace(opts->ip||"", " ","")/",", is_ip)) ) { required_hosts = find_ips_for( host ); if (!required_hosts) { // FIXME: Used to fallback to ANY. // Will this work with glob URLs? return 0; } } mapping(string:mapping(int:Protocol)) m; if( !( m = open_ports[ protocol ] ) ) // always add 'ANY' (0) and 'IPv6_ANY' (::) here, as empty mappings, // for speed reasons. // There is now no need to check for both open_ports[prot][0] and // open_ports[prot][0][port], we can go directly to the latter // test. m = open_ports[ protocol ] = ([ 0:([]), "::":([]) ]); if (prot->supports_ipless ) { // Check if the ANY port is already open for this port, since this // protocol supports IP-less virtual hosting, there is no need to // open yet another port if it is, since that would mosts probably // only conflict with the ANY port anyway. (this is true on most // OSes, it works on Solaris, but fails on linux) array(string) ipv6 = filter(required_hosts - ({ 0 }), has_value, ":"); array(string) ipv4 = required_hosts - ipv6; if (m[0][port] && sizeof(ipv4 - ({ 0 }))) { // We have a non-ANY IPv4 IP number. ipv4 = ({ 0 }); } #if constant(__ROXEN_SUPPORTS_IPV6__) if (m["::"][port] && sizeof(ipv6 - ({ "::" }))) { // We have a non-ANY IPv6 IP number. ipv6 = ({ "::" }); } required_hosts = ipv4 + ipv6; #else if (sizeof(ipv6)) { foreach(ipv6, string p) { report_warning(LOC_M(65, "Cannot open port %s for URL %s - " "IPv6 support disabled.\n"), p, display_url); } } required_hosts = ipv4; #endif /* __ROXEN_SUPPORTS_IPV6__ */ } int failures; int opened_ipv4_any_port; foreach(required_hosts, string required_host) { if( m[ required_host ] && m[ required_host ][ port ] ) { if (!required_host) opened_ipv4_any_port = 1; m[required_host][port]->ref(url, urls[url]); urls[url]->port = m[required_host][port]; urls[ourl]->port = m[required_host][port]; if (urls[ourl]->ports) { urls[ourl]->ports += ({ m[required_host][port] }); } else { urls[ourl]->ports = ({ m[required_host][port] }); } continue; /* No need to open a new port */ } if( !m[ required_host ] ) m[ required_host ] = ([ ]); Protocol prot_obj; if (mixed err = catch { prot_obj = m[ required_host ][ port ] = prot( port, required_host, // Don't complain if binding IPv6 ANY fails with // EADDRINUSE after we've bound IPv4 ANY. At least on // Linux, it seems that IPv4 and IPv6 can share the // same interface, and in that case we're already done // if we've bound the IPv4 ANY. required_host == "::" && opened_ipv4_any_port); }) { failures++; #if 0 if (has_prefix(describe_error(err), "Invalid address") && required_host && has_value(required_host, ":")) { report_error(sprintf("Failed to initialize IPv6 port for URL %s" " (ip %s).\n", display_url, required_host)); } else #endif report_error(sprintf("Initializing the port handler for " "URL %s (ip %s) failed: %s\n", display_url, required_host||"ANY", #ifdef DEBUG describe_backtrace(err) #else describe_error (err) #endif )); continue; } if (!required_host) opened_ipv4_any_port = 1; if (prot_obj->bound == -1) { // Got EADDRINUSE for the IPv6 case - see above. Just forget // about this one. m_delete (m[required_host], port); continue; } urls[ url ]->port = prot_obj; urls[ ourl ]->port = prot_obj; if (urls[ourl]->ports) { urls[ourl]->ports += ({ prot_obj }); } else { urls[ourl]->ports = ({ prot_obj }); } prot_obj->ref(url, urls[url]); if( !prot_obj->bound ) failures++; } if (failures == sizeof(required_hosts)) { report_error(LOC_M(23, "Failed to register URL %s for %O.")+"\n", display_url, conf->query_name()); return 0; } sort_urls(); // The following will show the punycoded version for IDN hostnames. // That is intentional, to make it clear what actually happens. report_notice(" "+LOC_S(3, "Registered URL %s for %O.")+"\n", display_url, conf->query_name() ); return 1; } Configuration find_configuration( string name ) //! Searches for a configuration with a name or fullname like the //! given string. See also get_configuration(). { // Optimization, in case the exact name is given... if( Configuration o = get_configuration( name ) ) return o; name = replace( lower_case( replace(name,"-"," ") )-" ", "/", "-" ); foreach( configurations, Configuration o ) { if( (lower_case( replace( replace(o->name, "-"," ") - " " , "/", "-" ) ) == name) || (lower_case( replace( replace(o->query_name(), "-", " ") - " " , "/", "-" ) ) == name) ) return o; } return 0; } protected int last_hrtime = gethrtime(1)/100; protected int clock_sequence = random(0x4000); protected string hex_mac_address = String.string2hex(Crypto.Random.random_string (6)| "\1\0\0\0\0\0"); // Multicast bit. // Generate an uuid string. string new_uuid_string() { int now = gethrtime(1)/100; if (now != last_hrtime) { clock_sequence = random(0x4000); last_hrtime = now; } int seq = clock_sequence++; // FIXME: Check if clock_sequence has wrapped during this @[now]. // Adjust @[now] with the number of 100ns intervals between // 1582-10-15 00:00:00.00 GMT and 1970-01-01 00:00:00.00 GMT. #if 0 now -= Calendar.parse("%Y-%M-%D %h:%m:%s.%f %z", "1582-10-15 00:00:00.00 GMT")->unix_time() * 10000000; #else /* !0 */ now += 0x01b21dd213814000; // Same as above. #endif /* 0 */ now &= 0x0fffffffffffffff; now |= 0x1000000000000000; // DCE version 1. clock_sequence &= 0x3fff; clock_sequence |= 0x8000; // DCE variant of UUIDs. return sprintf("%08x-%04x-%04x-%04x-%s", now & 0xffffffff, (now >> 32) & 0xffff, (now >> 48) & 0xffff, clock_sequence, hex_mac_address); } mapping(string:array(int)) error_log=([]); // Write a string to the administration interface error log and to stderr. void nwrite(string s, int|void perr, int|void errtype, object|void mod, object|void conf) { int log_time = time(1); string reference = (mod ? Roxen.get_modname(mod) : conf && conf->name) || ""; string log_index = sprintf("%d,%s,%s", errtype, reference, s); if(!error_log[log_index]) error_log[log_index] = ({ log_time }); else error_log[log_index] += ({ log_time }); if( mod ) { if( mod->error_log ) mod->error_log[log_index] += ({ log_time }); } if( conf ) { if( conf->error_log ) conf->error_log[log_index] += ({ log_time }); } if(errtype >= 1) report_debug( s ); } // When was Roxen started? int boot_time =time(); int start_time =time(); string version() { #ifndef NSERIOUS return query("default_ident")?real_version:query("ident"); #else multiset choices=(<>); string version=query("default_ident")?real_version:query("ident"); return version+", "+ ({ "Applier of Templates", "Beautifier of Layouts", "Conqueror of Comdex", "Deliverer of Documents", "Enhancer of Abilities", "Freer of Webmasters", "Generator of Logs", "Helper of Users", "Interpreter of Scripts", "Juggler of Java-code", "Keeper of Databases", "Locator of Keywords", "Manipulator of Data", "Negatiator of Protocols", "Operator of Sites", "Provider of Contents", "Quintessence of Quality", "Responder to Connections", "Server of Webs", "Translator of Texts", "Unifier of Interfaces", "Valet of Visitors", "Watcher for Requests", "Xylem of Services", "Yielder of Information", "Zenith of Extensibility" })[random(26)]; #endif } public void log(mapping file, RequestID request_id) { if(!request_id->conf) return; request_id->conf->log(file, request_id); } #if ROXEN_COMPAT < 2.2 // Support for unique user id's private Stdio.File current_user_id_file; private int current_user_id_number, current_user_id_file_last_mod; private void restore_current_user_id_number() { if(!current_user_id_file) current_user_id_file = open(configuration_dir + "LASTUSER~", "rwc"); if(!current_user_id_file) { call_out(restore_current_user_id_number, 2); return; } current_user_id_number = (int)current_user_id_file->read(100); current_user_id_file_last_mod = current_user_id_file->stat()[2]; report_debug("Restoring unique user ID information. (" + current_user_id_number + ")\n"); #ifdef FD_DEBUG mark_fd(current_user_id_file->query_fd(), "Unique user ID logfile.\n"); #endif } int increase_id() { if(!current_user_id_file) { restore_current_user_id_number(); return current_user_id_number+time(1); } if(current_user_id_file->stat()[2] != current_user_id_file_last_mod) restore_current_user_id_number(); current_user_id_number++; current_user_id_file->seek(0); current_user_id_file->write((string)current_user_id_number); current_user_id_file_last_mod = current_user_id_file->stat()[2]; return current_user_id_number; } #endif // ROXEN_COMPAT < 2.2 private int unique_id_counter; string create_unique_id() { return String.string2hex(Crypto.MD5.hash(query("server_salt") + start_time + "|" + (unique_id_counter++) + "|" + time(1))); } #ifndef __NT__ protected int abs_started; protected int handlers_alive; protected void low_engage_abs() { report_debug("**** %s: ABS exiting roxen!\n\n", ctime(time()) - "\n"); _exit(1); // It might not quit correctly otherwise, if it's // locked up } protected void engage_abs(int n) { if (!query("abs_engage")) { abs_started = 0; report_debug("Anti-Block System Disabled.\n"); return; } report_debug("**** %s: ABS engaged!\n" "Waited more than %d minute(s).\n", ctime(time()) - "\n", query("abs_timeout")); // Paranoia exit in case describe_all_threads below hangs. signal(signum("SIGALRM"), low_engage_abs); int t = alarm(20); #ifdef THREADS report_debug("Handler queue:\n"); if (mixed err = catch { array(mixed) queue = handle_queue->buffer[handle_queue->r_ptr..]; foreach(queue, mixed v) { if (!v) continue; if (!arrayp(v)) { report_debug(" *** Strange entry: %O ***\n", v); } else { report_debug(" %{%O, %}\n", v/({})); } } }) werror (describe_backtrace (err)); #endif report_debug("Trying to dump backlog: \n"); if (mixed err = catch { // Catch for paranoia reasons. describe_all_threads(); }) werror (describe_backtrace (err)); low_engage_abs(); } void restart_if_stuck (int force) //! @note //! Must be called from the backend thread due to Linux peculiarities. { remove_call_out(restart_if_stuck); if (!(query("abs_engage") || force)) return; if(!abs_started) { abs_started = 1; handlers_alive = time(); report_debug("Anti-Block System Enabled.\n"); } call_out (restart_if_stuck,10); // werror("call_out_info %O\n", filter(call_out_info(), lambda(array a) { // return a[2] == restart_if_stuck; })); signal(signum("SIGALRM"), engage_abs); int t = alarm (60*query("abs_timeout")+20); // werror("alarm: %d seconds left, set to %d\n", t, 60*query("abs_timeout")+20); if ((time(1) - handlers_alive) > 60*query("abs_timeout")) { // The handler installed below hasn't run. report_debug("**** %s: ABS: Handlers are dead!\n", ctime(time()) - "\n"); engage_abs(0); } handle(lambda() { handlers_alive = time(); }); } #endif #if constant(ROXEN_MYSQL_SUPPORTS_UNICODE) // NOTE: We need to mark binary data as binary in case // the Mysql character_set_connection has been // set to anything other than "latin1". #define MYSQL__BINARY "_binary" #else #define MYSQL__BINARY "" #endif function(string:Sql.Sql) dbm_cached_get; class ImageCache //! The image cache handles the behind-the-scenes caching and //! regeneration features of graphics generated on the fly. Besides //! being a cache, however, it serves a wide variety of other //! interesting image conversion/manipulation functions as well. { #define QUERY(X,Y...) get_db()->query(X,Y) string name; string dir; function draw_function; mapping(string:array(mapping|int)) meta_cache = ([]); string documentation(void|string tag_n_args) { string doc = Stdio.read_file("base_server/image_cache.xml"); if(!doc) return ""; if(!tag_n_args) return Parser.HTML()->add_container("ex", "")-> add_quote_tag("!--","","--")->finish(doc)->read(); return replace(doc, "###", tag_n_args); } protected mapping meta_cache_insert( string i, mapping what ) { #ifdef ARG_CACHE_DEBUG werror("MD insert for %O: %O\n", i, what ); #endif if( sizeof( meta_cache ) > 1000 ) sync_meta(); if( what ) { meta_cache[i] = ({ what, 0 }); return what; } else m_delete( meta_cache, i ); return 0; } protected mixed frommapp( mapping what ) { if( !what ) error( "Got invalid argcache-entry\n" ); if( !zero_type(what[""]) ) return what[""]; return what; } protected void|mapping draw( string name, RequestID id ) { #ifdef ARG_CACHE_DEBUG werror("draw %O\n", name ); #endif mixed args = Array.map( Array.map( name/"$", argcache->lookup, id->client ), frommapp); id->cache_status["icachedraw"] = 1; mapping meta; string data; array guides; mixed reply = draw_function( @copy_value(args), id ); if( !reply ) { #ifdef ARG_CACHE_DEBUG werror("%O(%{%O, %}%O) ==> 0\n", draw_function, args, id); #endif return; } if( arrayp( args ) ) args = args[0]; if( arrayp( reply ) ) // layers. { guides = reply->get_misc_value( "image_guides" )-({}); if( sizeof( guides ) ) guides = guides[0]; reply = Image.lay( reply ); } if( objectp( reply ) && reply->image ) // layer. { if( !guides ) guides = reply->get_misc_value( "image_guides" ); reply = ([ "img":reply->image(), "alpha":reply->alpha(), ]); } if( objectp( reply ) || (mappingp(reply) && reply->img) ) { int quant = (int)args->quant; string format = lower_case(args->format || "gif"); string dither = args->dither; Image.Colortable ct; Image.Color.Color bgcolor; Image.Image alpha; int true_alpha; if( args->fs || dither == "fs" ) dither = "floyd_steinberg"; if( dither == "random" ) dither = "random_dither"; if( format == "jpg" ) format = "jpeg"; if( dither ) dither = replace( dither, "-", "_" ); if(mappingp(reply)) { alpha = reply->alpha; reply = reply->img; } if( args["true-alpha"] ) true_alpha = 1; if( args["background"] || args["background-color"]) bgcolor = Image.Color( args["background"]||args["background-color"] ); if( args["opaque-value"] ) { if( !bgcolor ) true_alpha = 1; int ov = (int)(((float)args["opaque-value"])*2.55); if( ov < 0 ) ov = 0; else if( ov > 255 ) ov = 255; if( alpha ) alpha *= ov; else alpha = Image.Image( reply->xsize(), reply->ysize(), ov,ov,ov ); } if( args->gamma ) reply = reply->gamma( (float)args->gamma ); if( bgcolor && alpha && !true_alpha ) { reply = Image.Image( reply->xsize(), reply->ysize(), bgcolor ) ->paste_mask( reply, alpha ); alpha = alpha->threshold( 4 ); } int x0, y0, x1=reply->xsize(), y1=reply->ysize(), xc, yc; if( args["x-offset"] || args["xoffset"] ) x0 = (int)(args["x-offset"]||args["xoffset"]); if( args["y-offset"] || args["yoffset"] ) y0 = (int)(args["y-offset"]||args["yoffset"]); if( args["width"] || args["x-size"] ) x1 = (int)(args["x-size"]||args["width"]); if( args["height"] || args["y-size"] ) y1 = (int)(args["y-size"]||args["height"]); array xguides, yguides; function sort_guides = lambda() { xguides = ({}); yguides = ({}); if( guides ) { foreach( guides, object g ) if( g->pos > 0 ) if( g->vertical ) { if( g->pos < reply->xsize() ) xguides += ({ g->pos }); } else if( g->pos < reply->ysize() ) yguides += ({ g->pos }); sort( xguides ); sort( yguides ); } }; if( args->crop ) { int gx=1, gy=1, gx2, gy2; if( sscanf( args["guides-index"]||"", "%d,%d", gx, gy ) == 2 ) { gx2 = gx+1; gy2 = gy+1; sscanf( args["guides-index"]||"", "%d,%d-%d,%d", gx, gy, gx2, gy2 ); } /* No, I did not forget the break statements. */ switch( args->crop ) { case "guides-cross": sort_guides(); if( sizeof(xguides) && sizeof(yguides) ) { xc = xguides[ min(sizeof(xguides),gx) - 1 ]; yc = yguides[ min(sizeof(yguides),gy) - 1 ]; break; } guides=0; case "guides-region": sort_guides(); if( (sizeof(xguides)>1) && (sizeof(yguides)>1) ) { gx = min(sizeof(xguides)-1,gx) - 1; gy = min(sizeof(yguides)-1,gy) - 1; gx2 = min(sizeof(xguides),gx2) - 1; gy2 = min(sizeof(yguides),gy2) - 1; x0 = xguides[gx]; x1 = xguides[gx2] - x0; y0 = yguides[gy]; y1 = yguides[gy2] - y0; break; } default: if( sscanf( args->crop, "%d,%d-%d,%d", x0, y0, x1, y1 ) == 4) { x1 -= x0; y1 -= y0; } break; case "auto": [ x0, y0, x1, y1 ] = reply->find_autocrop(); x1 = x1 - x0 + 1; y1 = y1 - y0 + 1; } } sort_guides = 0; // To avoid garbage. #define SCALEI 1 #define SCALEF 2 #define SCALEA 4 #define CROP 8 function do_scale_and_crop = lambda ( int x0, int y0, int x1, int y1, int|float w, int|float h, int type ) { if( (type & CROP) && x1 && y1 && ((x1 != reply->xsize()) || (y1 != reply->ysize()) || x0 || y0 ) ) { reply = reply->copy( x0, y0, x0+x1-1, y0+y1-1, (bgcolor?bgcolor->rgb():0) ); if( alpha ) alpha = alpha->copy( x0, y0, x0+x1-1,y0+y1-1, Image.Color.black); } if( type & SCALEI ) { if( xc || yc ) { if( h && !w ) w = (reply->xsize() * h) / reply->ysize(); if( w && !h ) h = (reply->ysize() * w) / reply->xsize(); x0 = max( xc - w/2, 0 ); y0 = max( yc - h/2, 0 ); x1 = w; y1 = h; if( x0 + x1 > reply->xsize() ) { x0 = reply->xsize()-w; if( x0 < 0 ) { x0 = 0; x1 = reply->xsize(); } } if( y0 + y1 > reply->ysize() ) { y0 = reply->ysize()-h; if( y0 < 0 ) { y0 = 0; y1 = reply->ysize(); } } reply = reply->copy( x0, y0, x0+x1-1, y0+y1-1, (bgcolor?bgcolor->rgb():0) ); if( alpha ) alpha = alpha->copy( x0, y0, x0+x1-1,y0+y1-1, Image.Color.black); } } if( (type & SCALEF) &&

Roxen.git/ server/ base_server/ roxen.pike > a3c9650d18e0165b6522955faa36f93a8f5e825d [Annotate]