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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Linq;
using System.Collections.Generic;
using Newtonsoft.Json.Serialization;
namespace Duplicati.Library.Main
{
public static class DatabaseLocator
{
public class BackendEntry
{
public string Type;
public string Server;
public string Path;
public string Prefix;
public string Username;
//public string Passwordhash;
public int Port;
public string Databasepath;
public string ParameterFile;
}
public static string GetDatabasePath(string backend, Options options, bool autoCreate = true, bool anyUsername = false)
{
if (options == null)
options = new Options(new Dictionary<string, string>());
if (!string.IsNullOrEmpty(options.Dbpath))
return options.Dbpath;
var folder = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Duplicati");
if (!System.IO.Directory.Exists(folder))
System.IO.Directory.CreateDirectory(folder);
var file = System.IO.Path.Combine(folder, "dbconfig.json");
List<BackendEntry> configs;
if (!System.IO.File.Exists(file))
configs = new List<BackendEntry>();
else
configs = Newtonsoft.Json.JsonConvert.DeserializeObject<List<BackendEntry>>(System.IO.File.ReadAllText(file, System.Text.Encoding.UTF8));
var uri = new Library.Utility.Uri(backend);
string server = uri.Host;
string path = uri.Path;
string type = uri.Scheme;
int port = uri.Port;
string username = uri.Username;
string password = uri.Password;
string prefix = options.Prefix;
if (username == null || password == null)
{
var sopts = DynamicLoader.BackendLoader.GetSupportedCommands(backend);
var ropts = new Dictionary<string, string>(options.RawOptions);
foreach(var k in uri.QueryParameters.AllKeys)
ropts[k] = uri.QueryParameters[k];
if (sopts != null)
{
foreach(var o in sopts)
{
if (username == null && o.Aliases != null && o.Aliases.Contains("auth-username", StringComparer.InvariantCultureIgnoreCase) && ropts.ContainsKey(o.Name))
username = ropts[o.Name];
if (password == null && o.Aliases != null && o.Aliases.Contains("auth-password", StringComparer.InvariantCultureIgnoreCase) && ropts.ContainsKey(o.Name))
password = ropts[o.Name];
}
foreach(var o in sopts)
{
if (username == null && o.Name.Equals("auth-username", StringComparison.InvariantCultureIgnoreCase) && ropts.ContainsKey("auth-username"))
username = ropts["auth-username"];
if (password == null && o.Name.Equals("auth-password", StringComparison.InvariantCultureIgnoreCase) && ropts.ContainsKey("auth-password"))
password = ropts["auth-password"];
}
}
}
if (password != null)
password = Library.Utility.Utility.ByteArrayAsHexString(System.Security.Cryptography.SHA256.Create().ComputeHash(System.Text.Encoding.UTF8.GetBytes(password + "!" + uri.Scheme + "!" + uri.HostAndPath)));
//Now find the one that matches :)
var matches = (from n in configs
where
n.Type == type &&
//n.Passwordhash == password &&
n.Username == username &&
n.Port == port &&
n.Server == server &&
n.Path == path &&
n.Prefix == prefix
select n).ToList();
if (matches.Count > 1)
throw new Exception(string.Format("Multiple sources found for: {0}", backend));
// Re-select
if (matches.Count == 0 && anyUsername && string.IsNullOrEmpty(username))
{
matches = (from n in configs
where
n.Type == type &&
n.Port == port &&
n.Server == server &&
n.Path == path &&
n.Prefix == prefix
select n).ToList();
if (matches.Count > 1)
throw new Exception(String.Format("Multiple sources found for \"{0}\", try supplying --{1}", backend, "auth-username"));
}
if (matches.Count == 0 && !autoCreate)
return null;
if (matches.Count == 0)
{
var backupname = options.BackupName;
if (string.IsNullOrEmpty(backupname) || backupname == Options.DefaultBackupName)
backupname = GenerateRandomName();
else
{
foreach(var c in System.IO.Path.GetInvalidFileNameChars())
backupname = backupname.Replace(c.ToString(), "");
}
var newpath = System.IO.Path.Combine(folder, backupname + ".sqlite");
int max_tries = 100;
while (System.IO.File.Exists(newpath) && max_tries-- > 0)
newpath = System.IO.Path.Combine(folder, GenerateRandomName());
if (System.IO.File.Exists(newpath))
throw new Exception("Unable to find a unique name for the database, please use --dbpath");
//Create a new one, add it to the list, and save it
configs.Add(new BackendEntry() {
Type = type,
Server = server,
Path = path,
Prefix = prefix,
Username = username,
//Passwordhash = password,
Port = port,
Databasepath = newpath,
ParameterFile = null
});
var settings = new Newtonsoft.Json.JsonSerializerSettings();
settings.Formatting = Newtonsoft.Json.Formatting.Indented;
System.IO.File.WriteAllText(file, Newtonsoft.Json.JsonConvert.SerializeObject(configs, settings), System.Text.Encoding.UTF8);
return newpath;
}
else
{
return matches[0].Databasepath;
}
}
public static string GenerateRandomName()
{
var backupname = "";
var rnd = new Random();
for(var i = 0; i < 10; i++)
backupname += (char)rnd.Next('A', 'Z' + 1);
return backupname;
}
}
}
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