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//
// PathFinder.cs
//
// Copyright (C) 2004 Novell, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
using System;
using System.IO;
namespace Beagle.Util {
public class PathFinder {
private PathFinder () { }
static public string[] Paths {
get {
string env_var = Environment.GetEnvironmentVariable ("PATH");
return env_var.Split (':');
}
}
static public string PkgLibDir {
get { return ExternalStringsHack.PkgLibDir; }
}
static public string FilterDir {
get { return Path.Combine (PkgLibDir, "Filters"); }
}
static public string BackendDir {
get { return Path.Combine (PkgLibDir, "Backends"); }
}
static private string LocalStateDir {
get { return ExternalStringsHack.LocalStateDir; }
}
static public string SystemDir {
get { return Path.Combine (Path.Combine (LocalStateDir, "cache"), "beagle"); }
}
static public string SystemIndexesDir {
get { return Path.Combine (SystemDir, "indexes"); }
}
// The user's personal files are under this and their dotfiles are in it.
// It is usually found via HOME, but that can be overridden by setting
// BEAGLE_HOME
static string home_dir;
static object home_dir_lock = new object ();
static public string HomeDir {
get {
lock (home_dir_lock) {
if (home_dir == null) {
home_dir = Environment.GetEnvironmentVariable ("BEAGLE_HOME");
if (home_dir == null)
home_dir = Environment.GetEnvironmentVariable ("HOME");
if (home_dir == null)
throw new Exception ("Couldn't get HOME or BEAGLE_HOME");
if (home_dir.EndsWith ("/"))
home_dir = home_dir.Remove (home_dir.Length - 1, 1);
home_dir = Path.GetFullPath (home_dir);
if (! Directory.Exists (home_dir))
throw new Exception ("Home directory '"+home_dir+"' doesn't exist");
}
}
return home_dir;
}
// You probably don't want to do this.
set { lock (home_dir_lock) { home_dir = value; } }
}
// The storage directory is the place where beagle stores its private data.
// Fun fact #1: By default this is ~/.beagle
// Fun fact #2: It can be overridden by setting BEAGLE_STORAGE
static string storage_dir;
static object storage_dir_lock = new object ();
static public string StorageDir {
get {
lock (storage_dir_lock) {
if (storage_dir == null) {
storage_dir = Environment.GetEnvironmentVariable ("BEAGLE_STORAGE");
if (storage_dir == null)
storage_dir = Path.Combine (HomeDir, ".beagle");
else {
if (storage_dir.EndsWith ("/"))
storage_dir = storage_dir.Remove (storage_dir.Length - 1, 1);
storage_dir = Path.GetFullPath (storage_dir);
}
if (! Directory.Exists (storage_dir)) {
Directory.CreateDirectory (storage_dir);
// Make sure that the directory is only
// readable by the owner.
Mono.Unix.Native.Syscall.chmod (storage_dir, (Mono.Unix.Native.FilePermissions) 448); // 448 == 0700
}
}
}
return storage_dir;
}
}
static string remote_storage_dir;
static public string GetRemoteStorageDir (bool create)
{
if (remote_storage_dir == null) {
if ((! SystemInformation.IsPathOnBlockDevice (PathFinder.StorageDir) && Conf.Daemon.IndexSynchronization) ||
Environment.GetEnvironmentVariable ("BEAGLE_SYNCHRONIZE_LOCALLY") != null) {
string index_pointer = Path.Combine (StorageDir, "remote_storage_dir");
if (File.Exists (index_pointer)) {
StreamReader r = new StreamReader (index_pointer);
remote_storage_dir = r.ReadLine ();
r.Close ();
if (!Directory.Exists (remote_storage_dir))
remote_storage_dir = null;
}
if (create) {
if (remote_storage_dir == null) {
do {
string p = String.Format ("beagle-{0}-{1}", Environment.GetEnvironmentVariable ("USER"),
Guid.NewGuid ().ToString ());
remote_storage_dir = Path.Combine (Path.GetTempPath (), p);
} while (Directory.Exists (remote_storage_dir) || File.Exists (remote_storage_dir));
StreamWriter w = new StreamWriter (index_pointer);
w.WriteLine (remote_storage_dir);
w.Close ();
}
if (! Directory.Exists (remote_storage_dir)) {
Directory.CreateDirectory (remote_storage_dir);
// Make sure that the directory is only
// readable by the owner.
Mono.Unix.Native.Syscall.chmod (remote_storage_dir, (Mono.Unix.Native.FilePermissions) 448); // 448 == 0700
}
}
} else
remote_storage_dir = StorageDir;
}
return remote_storage_dir;
}
// The directory where beagle stores its indexes
// Fun fact #1: It will be synchronized locally if PathFinder.HomeDir
// is on a non-block device, or if BEAGLE_SYNCHRONIZE_LOCALLY is set.
static string index_dir;
static public string IndexDir {
get {
if (index_dir == null) {
index_dir = Path.Combine (GetRemoteStorageDir (true), "Indexes");
if (! Directory.Exists (index_dir)) {
Directory.CreateDirectory (index_dir);
// Make sure that the directory is only readable by the owner.
// Required when using index synchronization as then it resides in /tmp
Mono.Unix.Native.Syscall.chmod (index_dir, (Mono.Unix.Native.FilePermissions) 448); // 448 == 0700
}
}
return index_dir;
}
}
static public string LogDir {
get {
string dir = Path.Combine (StorageDir, "Log");
if (! Directory.Exists (dir))
Directory.CreateDirectory (dir);
return dir;
}
}
}
}
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