import: add support for importing steam mobile app v2 format, remove --sda argument (#307)

- add account schema for steam app v2
- make it possible to import steam v2 accounts
- import: remove the `--sda` flag, the format should be detected
automatically
- add unit tests
- make it actually work

closes #305

src/accountmanager.rs

@@ -15,6 +15,7 @@ use thiserror::Error;
 mod legacy;
 pub mod manifest;
 pub mod migrate;
+mod steamv2;
 
 pub use manifest::*;
 

src/accountmanager/migrate.rs

@@ -11,6 +11,7 @@ use crate::encryption::EncryptionScheme;
 use super::{
 	legacy::{SdaAccount, SdaManifest},
 	manifest::ManifestV1,
+	steamv2::SteamMobileV2,
 	EntryLoader, Manifest,
 };
 
@@ -145,7 +146,11 @@ impl MigratingManifest {
 						errors
 					));
 				}
-				accounts.into_iter().map(MigratingAccount::Sda).collect()
+				accounts
+					.into_iter()
+					.map(ExternalAccount::Sda)
+					.map(MigratingAccount::External)
+					.collect()
 			}
 			Self::ManifestV1(manifest) => {
 				let (accounts, errors) = manifest
@@ -228,15 +233,16 @@ fn deserialize_manifest(
 }
 
 #[derive(Debug, Clone)]
+#[allow(clippy::large_enum_variant)]
 enum MigratingAccount {
-	Sda(SdaAccount),
+	External(ExternalAccount),
 	ManifestV1(SteamGuardAccount),
 }
 
 impl MigratingAccount {
 	pub fn upgrade(self) -> Self {
 		match self {
-			Self::Sda(sda) => Self::ManifestV1(sda.into()),
+			Self::External(account) => Self::ManifestV1(account.into()),
 			Self::ManifestV1(_) => self,
 		}
 	}
@@ -255,10 +261,12 @@ impl From<MigratingAccount> for SteamGuardAccount {
 	}
 }
 
-pub fn load_and_upgrade_sda_account(path: &Path) -> anyhow::Result<SteamGuardAccount> {
+pub fn load_and_upgrade_external_account(path: &Path) -> anyhow::Result<SteamGuardAccount> {
 	let file = File::open(path)?;
-	let account: SdaAccount = serde_json::from_reader(file)?;
-	let mut account = MigratingAccount::Sda(account);
+	let mut deser = serde_json::Deserializer::from_reader(&file);
+	let account: ExternalAccount = serde_path_to_error::deserialize(&mut deser)
+		.map_err(|err| anyhow::anyhow!("Failed to deserialize account: {}", err))?;
+	let mut account = MigratingAccount::External(account);
 	while !account.is_latest() {
 		account = account.upgrade();
 	}
@@ -266,6 +274,23 @@ pub fn load_and_upgrade_sda_account(path: &Path) -> anyhow::Result<SteamGuardAcc
 	Ok(account.into())
 }
 
+#[derive(Debug, Clone, Deserialize)]
+#[serde(untagged)]
+#[allow(clippy::large_enum_variant)]
+enum ExternalAccount {
+	Sda(SdaAccount),
+	SteamMobileV2(SteamMobileV2),
+}
+
+impl From<ExternalAccount> for SteamGuardAccount {
+	fn from(account: ExternalAccount) -> Self {
+		match account {
+			ExternalAccount::Sda(account) => account.into(),
+			ExternalAccount::SteamMobileV2(account) => account.into(),
+		}
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use crate::{accountmanager::CURRENT_MANIFEST_VERSION, AccountManager};
@@ -360,10 +385,15 @@ mod tests {
 				account_name: "example",
 				steam_id: 1234,
 			},
+			Test {
+				mafile: "src/fixtures/maFiles/compat/steamv2/sample.maFile",
+				account_name: "afarihm",
+				steam_id: 76561199441992970,
+			},
 		];
 		for case in cases {
 			eprintln!("testing: {:?}", case);
-			let account = load_and_upgrade_sda_account(Path::new(case.mafile))?;
+			let account = load_and_upgrade_external_account(Path::new(case.mafile))?;
 			assert_eq!(account.account_name, case.account_name);
 			assert_eq!(account.steam_id, case.steam_id);
 		}

src/accountmanager/steamv2.rs

@@ -0,0 +1,73 @@
+use secrecy::SecretString;
+use serde::{Deserialize, Deserializer};
+use serde_json::Value;
+use steamguard::{token::TwoFactorSecret, SteamGuardAccount};
+use uuid::Uuid;
+
+/// Defines the schema for loading steamguard accounts extracted from backups of the official Steam app (v2).
+///
+/// ```json
+/// {
+///     "steamid": "X",
+///     "shared_secret": "X",
+///     "serial_number": "X",
+///     "revocation_code": "X",
+///     "uri": "otpauth:\/\/totp\/Steam:USERNAME?secret=X&issuer=Steam",
+///     "server_time": "X",
+///     "account_name": "USERNAME",
+///     "token_gid": "X",
+///     "identity_secret": "X",
+///     "secret_1": "X",
+///     "status": 1,
+///     "steamguard_scheme": "2"
+/// }
+/// ```
+#[derive(Debug, Clone, Deserialize)]
+pub struct SteamMobileV2 {
+	#[serde(deserialize_with = "de_parse_number")]
+	pub steamid: u64,
+	pub shared_secret: TwoFactorSecret,
+	pub serial_number: String,
+	#[serde(with = "crate::secret_string")]
+	pub revocation_code: SecretString,
+	#[serde(with = "crate::secret_string")]
+	pub uri: SecretString,
+	pub server_time: Option<serde_json::Value>,
+	pub account_name: String,
+	pub token_gid: String,
+	#[serde(with = "crate::secret_string")]
+	pub identity_secret: SecretString,
+	#[serde(with = "crate::secret_string")]
+	pub secret_1: SecretString,
+	pub status: Option<serde_json::Value>,
+	pub steamguard_scheme: Option<serde_json::Value>,
+}
+
+impl From<SteamMobileV2> for SteamGuardAccount {
+	fn from(account: SteamMobileV2) -> Self {
+		Self {
+			shared_secret: account.shared_secret,
+			identity_secret: account.identity_secret,
+			revocation_code: account.revocation_code,
+			uri: account.uri,
+			account_name: account.account_name,
+			token_gid: account.token_gid,
+			serial_number: account.serial_number,
+			steam_id: account.steamid,
+			// device_id is unknown, so we just make one up
+			device_id: format!("android:{}", Uuid::new_v4()),
+			secret_1: account.secret_1,
+			tokens: None,
+		}
+	}
+}
+
+fn de_parse_number<'de, D: Deserializer<'de>>(deserializer: D) -> Result<u64, D::Error> {
+	Ok(match Value::deserialize(deserializer)? {
+		Value::String(s) => s.parse().map_err(serde::de::Error::custom)?,
+		Value::Number(num) => num
+			.as_u64()
+			.ok_or(serde::de::Error::custom("Invalid number"))?,
+		_ => return Err(serde::de::Error::custom("wrong type")),
+	})
+}

src/commands/import.rs

@@ -11,9 +11,6 @@ use super::*;
 	about = "Import an account with steamguard already set up. It must not be encrypted. If you haven't used steamguard-cli before, you probably don't need to use this command."
 )]
 pub struct ImportCommand {
-	#[clap(long, help = "Whether or not the provided maFiles are from SDA.")]
-	pub sda: bool,
-
 	#[clap(long, help = "Paths to one or more maFiles, eg. \"./gaben.maFile\"")]
 	pub files: Vec<String>,
 }
@@ -25,26 +22,33 @@ where
 	fn execute(&self, _transport: T, manager: &mut AccountManager) -> anyhow::Result<()> {
 		for file_path in self.files.iter() {
 			debug!("loading entry: {:?}", file_path);
-			if self.sda {
-				let path = Path::new(&file_path);
-				let account = crate::accountmanager::migrate::load_and_upgrade_sda_account(path)?;
-				manager.add_account(account);
-				info!("Imported account: {}", &file_path);
-			} else {
-				match manager.import_account(file_path) {
-					Ok(_) => {
-						info!("Imported account: {}", &file_path);
-					}
-					Err(ManifestAccountImportError::AlreadyExists { .. }) => {
-						warn!("Account already exists: {} -- Ignoring", &file_path);
-					}
-					Err(ManifestAccountImportError::DeserializationFailed(err)) => {
-						warn!("Failed to import account: {} {}", &file_path, err);
-						warn!("If this file came from SDA, try using --sda");
-					}
-					Err(err) => {
-						bail!("Failed to import account: {} {}", &file_path, err);
-					}
+			match manager.import_account(file_path) {
+				Ok(_) => {
+					info!("Imported account: {}", &file_path);
+				}
+				Err(ManifestAccountImportError::AlreadyExists { .. }) => {
+					warn!("Account already exists: {} -- Ignoring", &file_path);
+				}
+				Err(ManifestAccountImportError::DeserializationFailed(orig_err)) => {
+					debug!("Falling back to external account import",);
+
+					let path = Path::new(&file_path);
+					let account =
+						match crate::accountmanager::migrate::load_and_upgrade_external_account(
+							path,
+						) {
+							Ok(account) => account,
+							Err(err) => {
+								error!("Failed to import account: {} {}", &file_path, err);
+								error!("The original error was: {}", orig_err);
+								continue;
+							}
+						};
+					manager.add_account(account);
+					info!("Imported account: {}", &file_path);
+				}
+				Err(err) => {
+					bail!("Failed to import account: {} {}", &file_path, err);
 				}
 			}
 		}

src/fixtures/maFiles/compat/steamv2/sample.maFile

@@ -0,0 +1,14 @@
+{
+	"steamid": "76561199441992970",
+	"shared_secret": "kSJa7hfbr8IvReG9/1Ax13BhTJA=",
+	"serial_number": "5182004572898897156",
+	"revocation_code": "R52260",
+	"uri": "otpauth://totp/Steam:afarihm?secret=SERFV3QX3OX4EL2F4G676UBR25YGCTEQ&issuer=Steam",
+	"server_time": "123",
+	"account_name": "afarihm",
+	"token_gid": "2d5a1b6cdbbfa9cc",
+	"identity_secret": "f62XbJcml4r1j3NcFm0GGTtmcXw=",
+	"secret_1": "BEelQHBr74ahsgiJbGArNV62/Bs=",
+	"status": 1,
+	"steamguard_scheme": "2"
+}