Tyler Gill
83a1dcfb64
InvariantCulture is useful when comparing / sorting human language strings in a culturely correct way. It handles things like accented letters in a way that makes sense to humans (e.g., 'a' should be sorted next to 'á', rather than after 'z'). Ordinal looks just at the raw code points of the characters. As such, it is recommended for use in cases when comparing system strings (file paths, command line parameters, config settings, etc.). Since it doesn't need to use the culture specific sorting rules, this method can often be faster. For more information, see https://stackoverflow.com/questions/492799/difference-between-invariantculture-and-ordinal-string-comparison (and other related questions)
229 lines
10 KiB
C#
229 lines
10 KiB
C#
// Copyright (C) 2015, The Duplicati Team
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// http://www.duplicati.com, info@duplicati.com
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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using System;
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using System.Linq;
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using System.Collections.Generic;
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using Newtonsoft.Json.Serialization;
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namespace Duplicati.Library.Main
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{
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public static class DatabaseLocator
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{
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public class BackendEntry
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{
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public string Type;
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public string Server;
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public string Path;
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public string Prefix;
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public string Username;
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//public string Passwordhash;
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public int Port;
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public string Databasepath;
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public string ParameterFile;
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}
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public static string GetDatabasePath(string backend, Options options, bool autoCreate = true, bool anyUsername = false)
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{
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if (options == null)
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options = new Options(new Dictionary<string, string>());
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if (!string.IsNullOrEmpty(options.Dbpath))
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return options.Dbpath;
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//Normal mode uses the systems "(Local) Application Data" folder
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// %LOCALAPPDATA% on Windows, ~/.config on Linux
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// Special handling for Windows:
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// - Older versions use %APPDATA%
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// - but new versions use %LOCALAPPDATA%
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//
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// If we find a new version, lets use that
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// otherwise use the older location
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//
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var folder = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Duplicati");
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if (Duplicati.Library.Utility.Utility.IsClientWindows)
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{
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var newlocation = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Duplicati");
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var prevfile = System.IO.Path.Combine(folder, "dbconfig.json");
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var curfile = System.IO.Path.Combine(newlocation, "dbconfig.json");
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// If the new file exists, we use that
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// If the new file does not exist, and the old file exists we use the old
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// Otherwise we use the new location
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if (System.IO.File.Exists(curfile) || !System.IO.File.Exists(prevfile))
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folder = newlocation;
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}
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if (!System.IO.Directory.Exists(folder))
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System.IO.Directory.CreateDirectory(folder);
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var file = System.IO.Path.Combine(folder, "dbconfig.json");
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List<BackendEntry> configs;
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if (!System.IO.File.Exists(file))
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configs = new List<BackendEntry>();
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else
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configs = Newtonsoft.Json.JsonConvert.DeserializeObject<List<BackendEntry>>(System.IO.File.ReadAllText(file, System.Text.Encoding.UTF8));
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var uri = new Library.Utility.Uri(backend);
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string server = uri.Host;
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string path = uri.Path;
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string type = uri.Scheme;
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int port = uri.Port;
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string username = uri.Username;
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string password = uri.Password;
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string prefix = options.Prefix;
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if (username == null || password == null)
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{
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var sopts = DynamicLoader.BackendLoader.GetSupportedCommands(backend);
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var ropts = new Dictionary<string, string>(options.RawOptions);
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foreach(var k in uri.QueryParameters.AllKeys)
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ropts[k] = uri.QueryParameters[k];
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if (sopts != null)
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{
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foreach(var o in sopts)
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{
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if (username == null && o.Aliases != null && o.Aliases.Contains("auth-username", StringComparer.OrdinalIgnoreCase) && ropts.ContainsKey(o.Name))
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username = ropts[o.Name];
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if (password == null && o.Aliases != null && o.Aliases.Contains("auth-password", StringComparer.OrdinalIgnoreCase) && ropts.ContainsKey(o.Name))
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password = ropts[o.Name];
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}
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foreach(var o in sopts)
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{
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if (username == null && o.Name.Equals("auth-username", StringComparison.OrdinalIgnoreCase) && ropts.ContainsKey("auth-username"))
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username = ropts["auth-username"];
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if (password == null && o.Name.Equals("auth-password", StringComparison.OrdinalIgnoreCase) && ropts.ContainsKey("auth-password"))
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password = ropts["auth-password"];
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}
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}
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}
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if (password != null)
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password = Library.Utility.Utility.ByteArrayAsHexString(System.Security.Cryptography.SHA256.Create().ComputeHash(System.Text.Encoding.UTF8.GetBytes(password + "!" + uri.Scheme + "!" + uri.HostAndPath)));
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//Now find the one that matches :)
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var matches = (from n in configs
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where
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n.Type == type &&
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//n.Passwordhash == password &&
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n.Username == username &&
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n.Port == port &&
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n.Server == server &&
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n.Path == path &&
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n.Prefix == prefix
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select n).ToList();
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if (matches.Count > 1)
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throw new Duplicati.Library.Interface.UserInformationException(string.Format("Multiple sources found for: {0}", backend));
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// Re-select
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if (matches.Count == 0 && anyUsername && string.IsNullOrEmpty(username))
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{
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matches = (from n in configs
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where
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n.Type == type &&
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n.Port == port &&
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n.Server == server &&
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n.Path == path &&
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n.Prefix == prefix
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select n).ToList();
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if (matches.Count > 1)
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throw new Duplicati.Library.Interface.UserInformationException(String.Format("Multiple sources found for \"{0}\", try supplying --{1}", backend, "auth-username"));
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}
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if (matches.Count == 0 && !autoCreate)
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return null;
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if (matches.Count == 0)
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{
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var backupname = options.BackupName;
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if (string.IsNullOrEmpty(backupname) || backupname == Options.DefaultBackupName)
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backupname = GenerateRandomName();
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else
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{
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foreach(var c in System.IO.Path.GetInvalidFileNameChars())
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backupname = backupname.Replace(c.ToString(), "");
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}
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var newpath = System.IO.Path.Combine(folder, backupname + ".sqlite");
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int max_tries = 100;
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while (System.IO.File.Exists(newpath) && max_tries-- > 0)
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newpath = System.IO.Path.Combine(folder, GenerateRandomName());
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if (System.IO.File.Exists(newpath))
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throw new Duplicati.Library.Interface.UserInformationException("Unable to find a unique name for the database, please use --dbpath");
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//Create a new one, add it to the list, and save it
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configs.Add(new BackendEntry() {
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Type = type,
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Server = server,
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Path = path,
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Prefix = prefix,
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Username = username,
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//Passwordhash = password,
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Port = port,
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Databasepath = newpath,
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ParameterFile = null
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});
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var settings = new Newtonsoft.Json.JsonSerializerSettings();
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settings.Formatting = Newtonsoft.Json.Formatting.Indented;
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System.IO.File.WriteAllText(file, Newtonsoft.Json.JsonConvert.SerializeObject(configs, settings), System.Text.Encoding.UTF8);
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return newpath;
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}
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else
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{
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return matches[0].Databasepath;
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}
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}
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public static string GenerateRandomName()
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{
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var backupname = "";
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var rnd = new Random();
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for(var i = 0; i < 10; i++)
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backupname += (char)rnd.Next('A', 'Z' + 1);
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return backupname;
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}
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public static bool IsDatabasePathInUse(string path)
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{
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var folder = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Duplicati");
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if (!System.IO.Directory.Exists(folder))
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return false;
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var file = System.IO.Path.Combine(folder, "dbconfig.json");
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List<BackendEntry> configs;
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if (!System.IO.File.Exists(file))
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return false;
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return Newtonsoft.Json.JsonConvert.DeserializeObject<List<BackendEntry>>(System.IO.File.ReadAllText(file, System.Text.Encoding.UTF8)).Any(x => string.Equals(path, x.Databasepath, Library.Utility.Utility.ClientFilenameStringComparision));
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}
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}
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}
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