public void Start()
{
if (!initialized)
{
throw new Exception("Server must be initialized before starting");
}
if (Shutdown.ShutdownRequested)
{
return;
}
this.running = true;
if (!indexhelper)
{
Config config = Conf.Get(Conf.Names.NetworkingConfig);
webinterface = config.GetOption("WebInterface", false);
Conf.WatchForUpdates();
Conf.Subscribe(Conf.Names.NetworkingConfig, ConfigUpdateHandler);
if (enable_network_svc || webinterface)
{
ExceptionHandlingThread.Start(new ThreadStart(this.HttpRun));
}
}
ExceptionHandlingThread.Start(new ThreadStart(this.RunInThread));
}
private static void ExerciseTheDogHarder()
{
string path;
path = Environment.GetEnvironmentVariable("BEAGREP_EXERCISE_THE_DOG_HARDER");
if (path == null)
{
return;
}
DirectoryInfo dir = new DirectoryInfo(path);
foreach (FileInfo file in dir.GetFiles())
{
exercise_files.Add(file);
}
if (exercise_files.Count == 0)
{
return;
}
int N = 5;
if (N > exercise_files.Count)
{
N = exercise_files.Count;
}
for (int i = 0; i < N; ++i)
{
ExceptionHandlingThread.Start(new ThreadStart(ExerciseTheDogHarderWorker));
}
}
private void StartWebserver()
{
if (indexhelper || enable_network_svc || webinterface)
{
return;
}
webinterface = true;
ExceptionHandlingThread.Start(new ThreadStart(this.HttpRun));
}
public override ResponseMessage Execute(RequestMessage req)
{
// Start the shutdown process in a separate thread
// to avoid a deadlock: BeginShutdown() waits until
// all worker process are finished, but this method
// itself is part of a worker.
ExceptionHandlingThread.Start(new ThreadStart(DoShutdown));
return(new EmptyResponse());
}
private bool CheckForExistence()
{
if (!Directory.Exists(nautilus_dir))
{
return(true);
}
ExceptionHandlingThread.Start(new ThreadStart(StartWorker));
return(false);
}
/////////////////////////////////////////////
public override void Start()
{
if (!(Directory.Exists(monodoc_dir)))
{
return;
}
base.Start();
ExceptionHandlingThread.Start(new ThreadStart(StartWorker));
}
public override void Start()
{
base.Start();
// delay everything till the backend is actually started
Inotify.Subscribe(IndexDirectory,
OnInotifyEvent,
Inotify.EventType.Create |
Inotify.EventType.Delete |
Inotify.EventType.DeleteSelf);
ExceptionHandlingThread.Start(new ThreadStart(StartWorker));
}
private void Run()
{
this.unix_listener.Start();
if (!Shutdown.WorkerStart(this, String.Format("server '{0}'", socket_path)))
{
return;
}
while (this.running)
{
UnixClient client;
try {
// This will block for an incoming connection.
// FIXME: But not really, it'll only wait a second.
// see the FIXME in UnixListener for more info.
client = this.unix_listener.AcceptUnixClient();
} catch (SocketException) {
// If the listener is stopped while we
// wait for a connection, a
// SocketException is thrown.
break;
}
// FIXME: This is a hack to work around a mono
// bug. See the FIXMEs in UnixListener.cs for
// more info, but client should never be null,
// because AcceptUnixClient() should be
// throwing a SocketException when the
// listener is shut down. So when that is
// fixed, remove the if conditional.
// If client is null, the socket timed out.
if (client != null)
{
ConnectionHandler handler = new UnixConnectionHandler(client);
lock (live_handlers)
live_handlers [handler] = handler;
ExceptionHandlingThread.Start(new ThreadStart(handler.HandleConnection));
}
}
Shutdown.WorkerFinished(this);
Logger.Log.Debug("Server '{0}' shut down", this.socket_path);
}
private void OnInotifyEvent(
Inotify.Watch watch,
string path,
string subitem,
string srcpath,
Inotify.EventType type)
{
// Stop watching if we were deleted
if ((type & Inotify.EventType.DeleteSelf) != 0)
{
watch.Unsubscribe();
return;
}
// We want a directory
if ((type & Inotify.EventType.IsDirectory) == 0)
{
return;
}
// We are only watching one directory, so we only have to check for ToIndex
// as subitem
if (subitem != "ToIndex")
{
return;
}
// We only have to watch for creation of the ToIndex directory here, so that
// the indexing process can be started. The Indexer will automatically clean
// up if the ToIndex diretory is deleted (we still display a status message
// here though)
if ((type & Inotify.EventType.Create) != 0)
{
ExceptionHandlingThread.Start(new ThreadStart(StartWorker));
}
else if ((type & Inotify.EventType.Delete) != 0)
{
Logger.Log.Debug("Stopping the Thunderbird indexing process; ToIndex disappeared");
}
}
public override void Start()
{
base.Start();
// The FSQ
Queryable queryable = QueryDriver.GetQueryable("Files");
this.target_queryable = (FileSystemQueryable.FileSystemQueryable)queryable.IQueryable;
string fsq_fingerprint = target_queryable.IndexFingerprint;
InitFileAttributesStore("NautilusMetadata", fsq_fingerprint);
if (!Directory.Exists(nautilus_dir))
{
GLib.Timeout.Add(60000, new GLib.TimeoutHandler(CheckForExistence));
}
else
{
ExceptionHandlingThread.Start(new ThreadStart(StartWorker));
}
}
/////////////////////////////////////////////////
public override void Start()
{
base.Start();
ExceptionHandlingThread.Start(new ThreadStart(StartWorker));
}
private static void DoMain(string [] args)
{
SystemInformation.SetProcessName("beagled-helper");
bool run_by_hand = (Environment.GetEnvironmentVariable("BEAGLE_RUN_HELPER_BY_HAND") != null);
bool log_in_fg = (Environment.GetEnvironmentVariable("BEAGLE_LOG_IN_THE_FOREGROUND_PLEASE") != null);
bool debug = false, disable_textcache = false;
foreach (string arg in args)
{
if (arg == "--disable-text-cache")
{
disable_textcache = true;
}
else if (arg == "--debug")
{
debug = true;
}
}
last_activity = DateTime.Now;
Log.Initialize(PathFinder.LogDir,
"IndexHelper",
debug ? LogLevel.Debug : LogLevel.Warn,
run_by_hand || log_in_fg);
Log.Always("Starting Index Helper process (version {0})", ExternalStringsHack.Version);
Log.Always("Running on {0}", SystemInformation.MonoRuntimeVersion);
Log.Always("Extended attributes are {0}", ExtendedAttribute.Supported ? "supported" : "not supported");
Log.Always("Command Line: {0}",
Environment.CommandLine != null ? Environment.CommandLine : "(null)");
if (disable_textcache)
{
Log.Always("Text cache is disabled.");
}
// Initialize GObject type system
g_type_init();
// Set the IO priority to idle, nice ourselves, and set
// a batch scheduling policy so we that we play nice
// on the system
if (Environment.GetEnvironmentVariable("BEAGLE_EXERCISE_THE_DOG") != null)
{
Log.Always("BEAGLE_EXERCISE_THE_DOG is set");
}
SystemPriorities.ReduceIoPriority();
int nice_to_set;
// We set different nice values because the
// internal implementation of SCHED_BATCH
// unconditionally imposes a +5 penalty on
// processes, and we want to be at nice +17,
// because it has a nice timeslice.
if (SystemPriorities.SetSchedulerPolicyBatch())
{
nice_to_set = 12;
}
else
{
nice_to_set = 17;
}
SystemPriorities.Renice(nice_to_set);
Server.Init();
#if MONO_1_9
Shutdown.SetupSignalHandlers(new Shutdown.SignalHandler(HandleSignal));
#else
SetupSignalHandlers();
#endif
Shutdown.ShutdownEvent += OnShutdown;
main_loop = new MainLoop();
Shutdown.RegisterMainLoop(main_loop);
// Start the server
Log.Debug("Starting messaging server");
bool server_has_been_started = false;
try {
server = new Server("socket-helper", true, false);
server.Start();
server_has_been_started = true;
} catch (InvalidOperationException ex) {
Logger.Log.Error(ex, "Couldn't start server. Exiting immediately.");
}
if (server_has_been_started)
{
// Whether we should generate heap-shot snapshots
heap_shot = (Environment.GetEnvironmentVariable("_HEY_LETS_DO_A_HEAP_SHOT") != null);
if (!run_by_hand)
{
// Start the monitor thread, which keeps an eye on memory usage and idle time.
ExceptionHandlingThread.Start(new ThreadStart(MemoryAndIdleMonitorWorker));
// Start a thread that watches the daemon and begins a shutdown
// if it terminates.
ExceptionHandlingThread.Start(new ThreadStart(DaemonMonitorWorker));
}
// Start the main loop
main_loop.Run();
ExceptionHandlingThread.JoinAllThreads();
// If we placed our sockets in a temp directory, try to clean it up
// Note: this may fail because the daemon is still running
if (PathFinder.GetRemoteStorageDir(false) != PathFinder.StorageDir)
{
try {
Directory.Delete(PathFinder.GetRemoteStorageDir(false));
} catch (IOException) { }
}
Log.Always("Index helper process shut down cleanly.");
}
}
public static void DoMain(string[] args)
{
SystemInformation.InternalCallInitializer.Init();
SystemInformation.SetProcessName("beagrepd");
// Process the command-line arguments
bool arg_debug = false;
bool arg_debug_memory = false;
bool arg_fg = false;
int i = 0;
while (i < args.Length)
{
string arg = args [i];
++i;
string next_arg = i < args.Length ? args [i] : null;
switch (arg)
{
case "-h":
case "--help":
PrintUsage();
Environment.Exit(0);
break;
case "--mdb":
case "--mono-debug":
// Silently ignore these arguments: they get handled
// in the wrapper script.
break;
case "--list-backends":
Console.WriteLine("Current available backends:");
Console.Write(QueryDriver.ListBackends());
Environment.Exit(0);
break;
case "--fg":
case "--foreground":
arg_fg = true;
break;
case "--bg":
case "--background":
arg_fg = false;
break;
case "--replace":
arg_replace = true;
break;
case "--debug":
arg_debug = true;
break;
case "--heap-shot":
arg_heap_shot = true;
arg_debug = true;
arg_debug_memory = true;
break;
case "--no-snapshots":
case "--no-snapshot":
arg_heap_shot_snapshots = false;
break;
case "--heap-buddy":
case "--debug-memory":
arg_debug = true;
arg_debug_memory = true;
break;
case "--indexing-test-mode":
arg_indexing_test_mode = true;
arg_fg = true;
break;
case "--backend":
if (next_arg == null)
{
Console.WriteLine("--backend requires a backend name");
Environment.Exit(1);
break;
}
if (next_arg.StartsWith("--"))
{
Console.WriteLine("--backend requires a backend name. Invalid name '{0}'", next_arg);
Environment.Exit(1);
break;
}
if (next_arg [0] != '+' && next_arg [0] != '-')
{
QueryDriver.OnlyAllow(next_arg);
}
else
{
if (next_arg [0] == '+')
{
QueryDriver.Allow(next_arg.Substring(1));
}
else
{
QueryDriver.Deny(next_arg.Substring(1));
}
}
++i; // we used next_arg
break;
case "--add-static-backend":
if (next_arg != null)
{
QueryDriver.AddStaticQueryable(next_arg);
}
++i;
break;
case "--disable-scheduler":
arg_disable_scheduler = true;
break;
case "--indexing-delay":
if (next_arg != null)
{
try {
QueryDriver.IndexingDelay = Int32.Parse(next_arg);
} catch {
Console.WriteLine("'{0}' is not a valid number of seconds", next_arg);
Environment.Exit(1);
}
}
++i;
break;
case "--autostarted":
// FIXME: This option is deprecated and will be removed in a future release.
break;
case "--disable-text-cache":
disable_textcache = true;
break;
case "--version":
VersionFu.PrintVersion();
Environment.Exit(0);
break;
default:
Console.WriteLine("Unknown argument '{0}'", arg);
Environment.Exit(1);
break;
}
}
if (Environment.GetEnvironmentVariable("SABAYON_SESSION_RUNNING") == "yes")
{
Console.WriteLine("Beagrep is running underneath Sabayon, exiting.");
Environment.Exit(0);
}
if (arg_indexing_test_mode)
{
LuceneQueryable.OptimizeRightAway = true;
}
// Bail out if we are trying to run as root
if (Environment.UserName == "root" && Environment.GetEnvironmentVariable("SUDO_USER") != null)
{
Console.WriteLine("You appear to be running beagrep using sudo. This can cause problems with");
Console.WriteLine("permissions in your .beagrep and .wapi directories if you later try to run");
Console.WriteLine("as an unprivileged user. If you need to run beagrep as root, please use");
Console.WriteLine("'su -c' instead.");
Environment.Exit(-1);
}
if (Environment.UserName == "root" && !Conf.Daemon.GetOption(Conf.Names.AllowRoot, false))
{
Console.WriteLine("You can not run beagrep as root. Beagrep is designed to run from your own");
Console.WriteLine("user account. If you want to create multiuser or system-wide indexes, use");
Console.WriteLine("the beagrep-build-index tool.");
Console.WriteLine();
Console.WriteLine("You can override this setting using the beagrep-config or beagrep-settings tools.");
Environment.Exit(-1);
}
try {
string tmp = PathFinder.HomeDir;
} catch (Exception e) {
Console.WriteLine("Unable to start the daemon: {0}", e.Message);
Environment.Exit(-1);
}
MainLoopThread = Thread.CurrentThread;
// FIXME: We always turn on full debugging output! We are still
// debugging this code, after all...
// arg_debug ? LogLevel.Debug : LogLevel.Warn
Log.Initialize(PathFinder.LogDir, "Beagrep", LogLevel.Debug, arg_fg);
Log.Always("Starting Beagrep Daemon (version {0})", ExternalStringsHack.Version);
Log.Always("Running on {0}", SystemInformation.MonoRuntimeVersion);
Log.Always("Command Line: {0}",
Environment.CommandLine != null ? Environment.CommandLine : "(null)");
if (!ExtendedAttribute.Supported)
{
Logger.Log.Warn("Extended attributes are not supported on this filesystem. " +
"Performance will suffer as a result.");
}
if (disable_textcache)
{
Log.Warn("Running with text-cache disabled!");
Log.Warn("*** Snippets will not be returned for documents indexed in this session.");
}
// Check if global configuration files are installed
if (!Conf.CheckGlobalConfig())
{
Console.WriteLine("Global configuration files not found in '{0}'", PathFinder.ConfigDataDir);
Environment.Exit(-1);
}
// Start our memory-logging thread
if (arg_debug_memory)
{
ExceptionHandlingThread.Start(new ThreadStart(LogMemoryUsage));
}
// Do BEAGREP_EXERCISE_THE_DOG_HARDER-related processing.
ExerciseTheDogHarder();
// Initialize GObject type system
g_type_init();
// Lower our CPU priority
SystemPriorities.Renice(7);
QueryDriver.Init();
Server.Init();
#if MONO_1_9
Shutdown.SetupSignalHandlers(new Shutdown.SignalHandler(HandleSignal));
#else
SetupSignalHandlers();
#endif
Shutdown.ShutdownEvent += OnShutdown;
main_loop = new MainLoop();
Shutdown.RegisterMainLoop(main_loop);
// Defer all actual startup until the main loop is
// running. That way shutdowns during the startup
// process work correctly.
GLib.Idle.Add(new GLib.IdleHandler(StartupProcess));
// Start our event loop.
main_loop.Run();
// We're out of the main loop now, join all the
// running threads so we can exit cleanly.
ExceptionHandlingThread.JoinAllThreads();
// If we placed our sockets in a temp directory, try to clean it up
// Note: this may fail because the helper is still running
if (PathFinder.GetRemoteStorageDir(false) != PathFinder.StorageDir)
{
try {
Directory.Delete(PathFinder.GetRemoteStorageDir(false));
} catch (IOException) { }
}
Log.Always("Beagrep daemon process shut down cleanly.");
}
static void DoMain(string [] args)
{
SystemInformation.SetProcessName("beagrep-build-index");
if (args.Length < 2)
{
PrintUsage();
}
ArrayList allowed_patterns = new ArrayList();
ArrayList denied_patterns = new ArrayList();
ArrayList denied_dir_patterns = new ArrayList();
int i = 0;
while (i < args.Length)
{
string arg = args [i];
++i;
string next_arg = i < args.Length ? args [i] : null;
switch (arg)
{
case "-h":
case "--help":
PrintUsage();
break;
case "--tag":
if (next_arg != null)
{
arg_tag = next_arg;
}
++i;
break;
case "-r":
case "--recursive":
arg_recursive = true;
break;
case "--enable-deletion":
arg_delete = true;
break;
case "--disable-directories":
arg_disable_directories = true;
break;
case "--enable-text-cache":
arg_cache_text = true;
break;
case "--target":
if (next_arg != null)
{
arg_output = Path.IsPathRooted(next_arg) ? next_arg : Path.GetFullPath(next_arg);
}
++i;
break;
case "--disable-filtering":
arg_disable_filtering = true;
break;
case "--allow-pattern":
if (next_arg == null)
{
break;
}
if (next_arg.IndexOf(',') != -1)
{
foreach (string pattern in next_arg.Split(','))
{
allowed_patterns.Add(pattern);
}
}
else
{
allowed_patterns.Add(next_arg);
}
++i;
break;
case "--deny-directory-pattern":
if (next_arg == null)
{
break;
}
if (next_arg.IndexOf(',') != -1)
{
foreach (string pattern in next_arg.Split(','))
{
denied_dir_patterns.Add(pattern);
}
}
else
{
denied_dir_patterns.Add(next_arg);
}
++i;
break;
case "--deny-pattern":
if (next_arg == null)
{
break;
}
if (next_arg.IndexOf(',') != -1)
{
foreach (string pattern in next_arg.Split(','))
{
denied_patterns.Add(pattern);
}
}
else
{
denied_patterns.Add(next_arg);
}
++i;
break;
case "--disable-restart":
arg_disable_restart = true;
break;
case "--source":
if (next_arg == null)
{
break;
}
arg_source = next_arg;
++i;
break;
default:
if (arg.StartsWith("-") || arg.StartsWith("--"))
{
PrintUsage();
}
string path = Path.IsPathRooted(arg) ? arg : Path.GetFullPath(arg);
if (path != "/" && path.EndsWith("/"))
{
path = path.TrimEnd('/');
}
if (Directory.Exists(path))
{
pending_directories.Enqueue(new DirectoryInfo(path));
}
else if (File.Exists(path))
{
pending_files.Enqueue(new FileInfo(path));
}
break;
}
}
/////////////////////////////////////////////////////////
if (arg_output == null)
{
Logger.Log.Error("--target must be specified");
Environment.Exit(1);
}
// Set the storage dir, this should be used to store log messages
// and filterver.dat
PathFinder.StorageDir = arg_output;
foreach (FileSystemInfo info in pending_directories)
{
if (Path.GetFullPath(arg_output) == info.FullName)
{
Logger.Log.Error("Target directory cannot be one of the source paths.");
Environment.Exit(1);
}
}
foreach (FileSystemInfo info in pending_files)
{
if (Path.GetFullPath(arg_output) == info.FullName)
{
Logger.Log.Error("Target directory cannot be one of the source paths.");
Environment.Exit(1);
}
}
if (!Directory.Exists(Path.GetDirectoryName(arg_output)))
{
Logger.Log.Error("Index directory not available for construction: {0}", arg_output);
Environment.Exit(1);
}
// Be *EXTRA PARANOID* about the contents of the target
// directory, because creating an indexing driver will
// nuke it.
if (Directory.Exists(arg_output))
{
foreach (FileInfo info in DirectoryWalker.GetFileInfos(arg_output))
{
if (Array.IndexOf(allowed_files, info.Name) == -1)
{
Logger.Log.Error("{0} doesn't look safe to delete: non-Beagrep file {1} was found", arg_output, info.FullName);
Environment.Exit(1);
}
}
foreach (DirectoryInfo info in DirectoryWalker.GetDirectoryInfos(arg_output))
{
if (Array.IndexOf(allowed_dirs, info.Name) == -1)
{
Logger.Log.Error("{0} doesn't look safe to delete: non-Beagrep directory {1} was found", arg_output, info.FullName);
Environment.Exit(1);
}
}
}
string config_file_path = Path.Combine(arg_output, "StaticIndex.xml");
string prev_source = null;
if (File.Exists(config_file_path))
{
Config static_index_config = Conf.LoadFrom(config_file_path);
if (static_index_config == null)
{
Log.Error("Invalid configuation file {0}", config_file_path);
Environment.Exit(1);
}
prev_source = static_index_config.GetOption("Source", null);
if (arg_source != null && prev_source != arg_source)
{
Log.Error("Source already set to {0} for existing static index. Cannot set source to {1}.", prev_source, arg_source);
Environment.Exit(1);
}
// If arg_source is not given, and prev_source is present, use prev_source
// as the arg_source. This is useful for re-running build-index without
// giving --arg_source for already existing static index
arg_source = prev_source;
}
if (arg_source == null)
{
DirectoryInfo dir = new DirectoryInfo(StringFu.SanitizePath(arg_output));
arg_source = dir.Name;
}
string global_files_config = Path.Combine(PathFinder.ConfigDataDir, "config-files");
global_files_config = Path.Combine(global_files_config, Conf.Names.FilesQueryableConfig + ".xml");
if (!File.Exists(global_files_config))
{
Log.Error("Global configuration file not found {0}", global_files_config);
Environment.Exit(0);
}
// Setup regexes for allowed/denied patterns
if (allowed_patterns.Count > 0)
{
allowed_regex = StringFu.GetPatternRegex(allowed_patterns);
}
else
{
// Read the exclude values from config
// For system-wide indexes, only the global config value will be used
Config config = Conf.Get(Conf.Names.FilesQueryableConfig);
List <string[]> values = config.GetListOptionValues(Conf.Names.ExcludePattern);
if (values != null)
{
foreach (string[] exclude in values)
{
denied_patterns.Add(exclude [0]);
}
}
if (denied_patterns.Count > 0)
{
denied_regex = StringFu.GetPatternRegex(denied_patterns);
}
}
if (denied_dir_patterns.Count > 0)
{
denied_dir_regex = StringFu.GetPatternRegex(denied_dir_patterns);
Log.Always("Will ignore directories matching regular expression: {0}", denied_dir_regex);
}
Log.Always("Starting beagrep-build-index (pid {0}) at {1}", Process.GetCurrentProcess().Id, DateTime.Now);
driver = new LuceneIndexingDriver(arg_output, MINOR_VERSION, false);
driver.TextCache = (arg_cache_text) ? new TextCache(arg_output) : null;
if (driver.TextCache != null)
{
driver.TextCache.WorldReadable = true;
}
backing_fa_store = new FileAttributesStore_Sqlite(driver.TopDirectory, driver.Fingerprint);
fa_store = new FileAttributesStore(backing_fa_store);
// Set up signal handlers
#if MONO_1_9
Shutdown.SetupSignalHandlers(delegate(int signal)
{
if (signal == (int)Mono.Unix.Native.Signum.SIGINT ||
signal == (int)Mono.Unix.Native.Signum.SIGTERM)
{
Shutdown.BeginShutdown();
}
});
#else
SetupSignalHandlers();
#endif
Thread monitor_thread = null;
Stopwatch watch = new Stopwatch();
watch.Start();
if (!arg_disable_restart)
{
// Start the thread that monitors memory usage.
monitor_thread = ExceptionHandlingThread.Start(new ThreadStart(MemoryMonitorWorker));
}
// Start indexworker to do the crawling and indexing
IndexWorker();
// Join any threads so that we know that we're the only thread still running
if (monitor_thread != null)
{
monitor_thread.Join();
}
watch.Stop();
Logger.Log.Debug("Elapsed time {0}.", watch);
// Write this after indexing is done. This is because, if creating a new index,
// LuceneIndexingDriver.Create() is called which purges the entire directory.
if (prev_source == null)
{
Config static_index_config = Conf.LoadNew("StaticIndex.xml");
// Write StaticIndex.xml containing:
// The name of the source
static_index_config.SetOption("Source", arg_source);
static_index_config ["Source"].Description = "Source of the static index";
Conf.SaveTo(static_index_config, config_file_path);
}
if (restart)
{
Logger.Log.Debug("Restarting beagrep-build-index");
Process p = new Process();
p.StartInfo.UseShellExecute = false;
// FIXME: Maybe this isn't the right way to do things? It should be ok,
// the PATH is inherited from the shell script which runs mono itself.
p.StartInfo.FileName = "mono";
p.StartInfo.Arguments = String.Join(" ", Environment.GetCommandLineArgs());
p.Start();
}
Log.Always("Exiting beagrep-build-index (pid {0}) at {1}", Process.GetCurrentProcess().Id, DateTime.Now);
}
private void HttpRun()
{
http_listener = new HttpListener();
string prefix = null;
int port = 4000;
bool success = false;
string host = "localhost";
if (enable_network_svc)
{
host = "*";
}
do
{
prefix = String.Format("http://{0}:{1}/", host, port);
success = true;
try {
http_listener.Prefixes.Add(prefix);
http_listener.Start();
} catch (SocketException) {
http_listener.Prefixes.Remove(prefix);
success = false;
port++;
}
} while (!success);
Shutdown.WorkerStart(this.http_listener, String.Format("HTTP Server '{0}'", prefix));
Log.Always("HTTP Server: Listening on {0}", prefix);
while (this.running)
{
HttpListenerContext context = null;
try {
context = http_listener.GetContext();
} catch (Exception e) {
// Log a warning if not due to shutdown
if (!this.running ||
(!this.enable_network_svc && !this.webinterface))
{
break;
}
Logger.Log.Warn(e, "HTTP Server: Exception while getting context:");
}
if (context == null)
{
continue;
}
if (context.Request.HttpMethod == "GET")
{
try {
WebServer.HandleStaticPages(context);
} catch (IOException ex1) {
// Socket was shut down
Log.Debug("Exception while serving static page: " + ex1.Message);
// FIXME: Should anything be done here to free "context" ? This context seems to remain in http_listener's ctxt table
} catch (SocketException ex2) {
// Socket is not connected anymore
Log.Debug("Exception while serving static page: " + ex2.Message);
}
continue;
}
if (context.Request.HttpMethod != "POST")
{
// FIXME: Send better HTTP error ?
context.Response.StatusCode = 404;
context.Response.Close();
continue;
}
if (context.Request.RawUrl == "/")
{
// We have received a new query request
Guid guid = Guid.NewGuid();
HttpItemHandler item_handler = new HttpItemHandler();
item_handlers [guid] = item_handler;
ConnectionHandler handler = new HttpConnectionHandler(guid, context, item_handler);
lock (live_handlers)
live_handlers [handler] = handler;
ExceptionHandlingThread.Start(new ThreadStart(handler.HandleConnection));
}
else
{
// We have received a hit request
Uri uri = context.Request.Url;
string path = null;
// Second Uri segment contains the Guid
string g = uri.Segments [1];
if (g [g.Length - 1] == '/')
{
g = g.Remove(g.Length - 1, 1);
}
Guid guid = Guid.Empty;
try {
guid = new Guid(g);
} catch (FormatException) {
// FIXME: return HTTP error
Logger.Log.Debug("HTTP Server: Invalid query guid '{0}'", g);
context.Response.Close();
continue;
}
if (uri.Query.Length > 0)
{
path = uri.Query.Remove(0, 1);
}
else
{
// FIXME: return HTTP error
Logger.Log.Debug("HTTP Server: Empty query string in item request");
context.Response.Close();
continue;
}
System.Uri item_uri = new Uri(path);
HttpItemHandler handler = (HttpItemHandler)item_handlers [guid];
if (handler == null)
{
// FIXME: return HTTP error
Logger.Log.Debug("HTTP Server: Query ({0}) does not exist", g);
context.Response.Close();
}
else
{
Logger.Log.Debug("HTTP Server: Asked for item '{0}' on query '{1}'", path, g);
handler.HandleRequest(context, item_uri);
}
}
}
Shutdown.WorkerFinished(http_listener);
Logger.Log.Info("HTTP Server: '{0}' shut down...", prefix);
http_listener = null;
}