228 lines
10 KiB
C#
228 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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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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