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Added Manifest class from Steam Desktop Authenticator

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This commit is contained in:
Carson McManus 2016-08-21 14:17:04 -04:00
parent d860b6f6eb
commit b97b4b6235
2 changed files with 468 additions and 3 deletions
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469
Program.cs
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@ -1,7 +1,11 @@
using Newtonsoft.Json;
using SteamAuth;
using System;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
public static class Program
{
@ -39,3 +43,464 @@ public static class Program
}
}
}
public class Manifest
{
[JsonProperty("encrypted")]
public bool Encrypted { get; set; }
[JsonProperty("first_run")]
public bool FirstRun { get; set; } = true;
[JsonProperty("entries")]
public List<ManifestEntry> Entries { get; set; }
[JsonProperty("periodic_checking")]
public bool PeriodicChecking { get; set; } = false;
[JsonProperty("periodic_checking_interval")]
public int PeriodicCheckingInterval { get; set; } = 5;
[JsonProperty("periodic_checking_checkall")]
public bool CheckAllAccounts { get; set; } = false;
[JsonProperty("auto_confirm_market_transactions")]
public bool AutoConfirmMarketTransactions { get; set; } = false;
[JsonProperty("auto_confirm_trades")]
public bool AutoConfirmTrades { get; set; } = false;
private static Manifest _manifest { get; set; }
public static string GetExecutableDir()
{
return Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location);
}
public static Manifest GetManifest(bool forceLoad = false)
{
// Check if already staticly loaded
if (_manifest != null && !forceLoad)
{
return _manifest;
}
// Find config dir and manifest file
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
string maFile = maDir + "manifest.json";
// If there's no config dir, create it
if (!Directory.Exists(maDir))
{
_manifest = _generateNewManifest();
return _manifest;
}
// If there's no manifest, create it
if (!File.Exists(maFile))
{
_manifest = _generateNewManifest(true);
return _manifest;
}
try
{
string manifestContents = File.ReadAllText(maFile);
_manifest = JsonConvert.DeserializeObject<Manifest>(manifestContents);
if (_manifest.Encrypted && _manifest.Entries.Count == 0)
{
_manifest.Encrypted = false;
_manifest.Save();
}
_manifest.RecomputeExistingEntries();
return _manifest;
}
catch (Exception)
{
return null;
}
}
private static Manifest _generateNewManifest(bool scanDir = false)
{
// No directory means no manifest file anyways.
Manifest newManifest = new Manifest();
newManifest.Encrypted = false;
newManifest.PeriodicCheckingInterval = 5;
newManifest.PeriodicChecking = false;
newManifest.AutoConfirmMarketTransactions = false;
newManifest.AutoConfirmTrades = false;
newManifest.Entries = new List<ManifestEntry>();
newManifest.FirstRun = true;
// Take a pre-manifest version and generate a manifest for it.
if (scanDir)
{
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
if (Directory.Exists(maDir))
{
DirectoryInfo dir = new DirectoryInfo(maDir);
var files = dir.GetFiles();
foreach (var file in files)
{
if (file.Extension != ".maFile") continue;
string contents = File.ReadAllText(file.FullName);
try
{
SteamGuardAccount account = JsonConvert.DeserializeObject<SteamGuardAccount>(contents);
ManifestEntry newEntry = new ManifestEntry()
{
Filename = file.Name,
SteamID = account.Session.SteamID
};
newManifest.Entries.Add(newEntry);
}
catch (Exception)
{
}
}
if (newManifest.Entries.Count > 0)
{
newManifest.Save();
newManifest.PromptSetupPassKey("This version of SDA has encryption. Please enter a passkey below, or hit cancel to remain unencrypted");
}
}
}
if (newManifest.Save())
{
return newManifest;
}
return null;
}
public class IncorrectPassKeyException : Exception { }
public class ManifestNotEncryptedException : Exception { }
public string PromptForPassKey()
{
if (!this.Encrypted)
{
throw new ManifestNotEncryptedException();
}
bool passKeyValid = false;
string passKey = null;
while (!passKeyValid)
{
InputForm passKeyForm = new InputForm("Please enter your encryption passkey.", true);
passKeyForm.ShowDialog();
if (!passKeyForm.Canceled)
{
passKey = passKeyForm.txtBox.Text;
passKeyValid = this.VerifyPasskey(passKey);
if (!passKeyValid)
{
MessageBox.Show("That passkey is invalid.");
}
}
else
{
return null;
}
}
return passKey;
}
public string PromptSetupPassKey(string initialPrompt = "Enter passkey, or hit cancel to remain unencrypted.")
{
InputForm newPassKeyForm = new InputForm(initialPrompt);
newPassKeyForm.ShowDialog();
if (newPassKeyForm.Canceled || newPassKeyForm.txtBox.Text.Length == 0)
{
MessageBox.Show("WARNING: You chose to not encrypt your files. Doing so imposes a security risk for yourself. If an attacker were to gain access to your computer, they could completely lock you out of your account and steal all your items.");
return null;
}
InputForm newPassKeyForm2 = new InputForm("Confirm new passkey.");
newPassKeyForm2.ShowDialog();
if (newPassKeyForm2.Canceled)
{
MessageBox.Show("WARNING: You chose to not encrypt your files. Doing so imposes a security risk for yourself. If an attacker were to gain access to your computer, they could completely lock you out of your account and steal all your items.");
return null;
}
string newPassKey = newPassKeyForm.txtBox.Text;
string confirmPassKey = newPassKeyForm2.txtBox.Text;
if (newPassKey != confirmPassKey)
{
MessageBox.Show("Passkeys do not match.");
return null;
}
if (!this.ChangeEncryptionKey(null, newPassKey))
{
MessageBox.Show("Unable to set passkey.");
return null;
}
else
{
MessageBox.Show("Passkey successfully set.");
}
return newPassKey;
}
public SteamAuth.SteamGuardAccount[] GetAllAccounts(string passKey = null, int limit = -1)
{
if (passKey == null && this.Encrypted) return new SteamGuardAccount[0];
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
List<SteamAuth.SteamGuardAccount> accounts = new List<SteamAuth.SteamGuardAccount>();
foreach (var entry in this.Entries)
{
string fileText = File.ReadAllText(maDir + entry.Filename);
if (this.Encrypted)
{
string decryptedText = FileEncryptor.DecryptData(passKey, entry.Salt, entry.IV, fileText);
if (decryptedText == null) return new SteamGuardAccount[0];
fileText = decryptedText;
}
var account = JsonConvert.DeserializeObject<SteamAuth.SteamGuardAccount>(fileText);
if (account == null) continue;
accounts.Add(account);
if (limit != -1 && limit >= accounts.Count)
break;
}
return accounts.ToArray();
}
public bool ChangeEncryptionKey(string oldKey, string newKey)
{
if (this.Encrypted)
{
if (!this.VerifyPasskey(oldKey))
{
return false;
}
}
bool toEncrypt = newKey != null;
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
for (int i = 0; i < this.Entries.Count; i++)
{
ManifestEntry entry = this.Entries[i];
string filename = maDir + entry.Filename;
if (!File.Exists(filename)) continue;
string fileContents = File.ReadAllText(filename);
if (this.Encrypted)
{
fileContents = FileEncryptor.DecryptData(oldKey, entry.Salt, entry.IV, fileContents);
}
string newSalt = null;
string newIV = null;
string toWriteFileContents = fileContents;
if (toEncrypt)
{
newSalt = FileEncryptor.GetRandomSalt();
newIV = FileEncryptor.GetInitializationVector();
toWriteFileContents = FileEncryptor.EncryptData(newKey, newSalt, newIV, fileContents);
}
File.WriteAllText(filename, toWriteFileContents);
entry.IV = newIV;
entry.Salt = newSalt;
}
this.Encrypted = toEncrypt;
this.Save();
return true;
}
public bool VerifyPasskey(string passkey)
{
if (!this.Encrypted || this.Entries.Count == 0) return true;
var accounts = this.GetAllAccounts(passkey, 1);
return accounts != null && accounts.Length == 1;
}
public bool RemoveAccount(SteamGuardAccount account, bool deleteMaFile = true)
{
ManifestEntry entry = (from e in this.Entries where e.SteamID == account.Session.SteamID select e).FirstOrDefault();
if (entry == null) return true; // If something never existed, did you do what they asked?
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
string filename = maDir + entry.Filename;
this.Entries.Remove(entry);
if (this.Entries.Count == 0)
{
this.Encrypted = false;
}
if (this.Save() && deleteMaFile)
{
try
{
File.Delete(filename);
return true;
}
catch (Exception)
{
return false;
}
}
return false;
}
public bool SaveAccount(SteamGuardAccount account, bool encrypt, string passKey = null)
{
if (encrypt && String.IsNullOrEmpty(passKey)) return false;
if (!encrypt && this.Encrypted) return false;
string salt = null;
string iV = null;
string jsonAccount = JsonConvert.SerializeObject(account);
if (encrypt)
{
salt = FileEncryptor.GetRandomSalt();
iV = FileEncryptor.GetInitializationVector();
string encrypted = FileEncryptor.EncryptData(passKey, salt, iV, jsonAccount);
if (encrypted == null) return false;
jsonAccount = encrypted;
}
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
string filename = account.Session.SteamID.ToString() + ".maFile";
ManifestEntry newEntry = new ManifestEntry()
{
SteamID = account.Session.SteamID,
IV = iV,
Salt = salt,
Filename = filename
};
bool foundExistingEntry = false;
for (int i = 0; i < this.Entries.Count; i++)
{
if (this.Entries[i].SteamID == account.Session.SteamID)
{
this.Entries[i] = newEntry;
foundExistingEntry = true;
break;
}
}
if (!foundExistingEntry)
{
this.Entries.Add(newEntry);
}
bool wasEncrypted = this.Encrypted;
this.Encrypted = encrypt || this.Encrypted;
if (!this.Save())
{
this.Encrypted = wasEncrypted;
return false;
}
try
{
File.WriteAllText(maDir + filename, jsonAccount);
return true;
}
catch (Exception)
{
return false;
}
}
public bool Save()
{
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
string filename = maDir + "manifest.json";
if (!Directory.Exists(maDir))
{
try
{
Directory.CreateDirectory(maDir);
}
catch (Exception)
{
return false;
}
}
try
{
string contents = JsonConvert.SerializeObject(this);
File.WriteAllText(filename, contents);
return true;
}
catch (Exception)
{
return false;
}
}
private void RecomputeExistingEntries()
{
List<ManifestEntry> newEntries = new List<ManifestEntry>();
string maDir = Manifest.GetExecutableDir() + "/maFiles/";
foreach (var entry in this.Entries)
{
string filename = maDir + entry.Filename;
if (File.Exists(filename))
{
newEntries.Add(entry);
}
}
this.Entries = newEntries;
if (this.Entries.Count == 0)
{
this.Encrypted = false;
}
}
public void MoveEntry(int from, int to)
{
if (from < 0 || to < 0 || from > Entries.Count || to > Entries.Count - 1) return;
ManifestEntry sel = Entries[from];
Entries.RemoveAt(from);
Entries.Insert(to, sel);
Save();
}
public class ManifestEntry
{
[JsonProperty("encryption_iv")]
public string IV { get; set; }
[JsonProperty("encryption_salt")]
public string Salt { get; set; }
[JsonProperty("filename")]
public string Filename { get; set; }
[JsonProperty("steamid")]
public ulong SteamID { get; set; }
}
}

2
makefile
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@ -1,4 +1,4 @@
all: Program.cs
nuget restore SteamAuth/SteamAuth/SteamAuth.sln
mcs -target:library -out:build/libSteamAuth.so -r:SteamAuth/SteamAuth/packages/Newtonsoft.Json.7.0.1/lib/net45/Newtonsoft.Json.dll SteamAuth/SteamAuth/APIEndpoints.cs SteamAuth/SteamAuth/AuthenticatorLinker.cs SteamAuth/SteamAuth/Confirmation.cs SteamAuth/SteamAuth/SessionData.cs SteamAuth/SteamAuth/SteamGuardAccount.cs SteamAuth/SteamAuth/SteamWeb.cs SteamAuth/SteamAuth/TimeAligner.cs SteamAuth/SteamAuth/UserLogin.cs SteamAuth/SteamAuth/Util.cs SteamAuth/SteamAuth/Properties/AssemblyInfo.cs
mcs -out:build/steamguard -r:build/libSteamAuth.so Program.cs
mcs -out:build/steamguard -r:build/libSteamAuth.so -r:SteamAuth/SteamAuth/packages/Newtonsoft.Json.7.0.1/lib/net45/Newtonsoft.Json.dll Program.cs