using Gee; using Qlite; using Dino.Entities; namespace Dino.Plugins.Omemo { public class Database : Qlite.Database { private const int VERSION = 4; public class IdentityMetaTable : Table { public enum TrustLevel { VERIFIED, TRUSTED, UNTRUSTED, UNKNOWN; public string to_string() { int val = this; return val.to_string(); } } //Default to provide backwards compatability public Column identity_id = new Column.Integer("identity_id") { not_null = true, min_version = 2, default = "-1" }; public Column address_name = new Column.Text("address_name") { not_null = true }; public Column device_id = new Column.Integer("device_id") { not_null = true }; public Column identity_key_public_base64 = new Column.Text("identity_key_public_base64"); public Column trusted_identity = new Column.BoolInt("trusted_identity") { default = "0", max_version = 1 }; public Column trust_level = new Column.Integer("trust_level") { default = TrustLevel.UNKNOWN.to_string(), min_version = 2 }; public Column now_active = new Column.BoolInt("now_active") { default = "1" }; public Column last_active = new Column.Long("last_active"); internal IdentityMetaTable(Database db) { base(db, "identity_meta"); init({identity_id, address_name, device_id, identity_key_public_base64, trusted_identity, trust_level, now_active, last_active}); index("identity_meta_idx", {identity_id, address_name, device_id}, true); index("identity_meta_list_idx", {identity_id, address_name}); } public QueryBuilder with_address(int identity_id, string address_name) { return select().with(this.identity_id, "=", identity_id).with(this.address_name, "=", address_name); } public void insert_device_list(int32 identity_id, string address_name, ArrayList devices) { update().with(this.identity_id, "=", identity_id).with(this.address_name, "=", address_name).set(now_active, false).perform(); foreach (int32 device_id in devices) { upsert() .value(this.identity_id, identity_id, true) .value(this.address_name, address_name, true) .value(this.device_id, device_id, true) .value(this.now_active, true) .value(this.last_active, (long) new DateTime.now_utc().to_unix()) .perform(); } } public int64 insert_device_bundle(int32 identity_id, string address_name, int device_id, Bundle bundle, TrustLevel trust) { if (bundle == null || bundle.identity_key == null) return -1; // Do not replace identity_key if it was known before, it should never change! string identity_key = Base64.encode(bundle.identity_key.serialize()); RowOption row = with_address(identity_id, address_name).with(this.device_id, "=", device_id).single().row(); if (row.is_present() && row[identity_key_public_base64] != null && row[identity_key_public_base64] != identity_key) { error("Tried to change the identity key for a known device id. Likely an attack."); } return upsert() .value(this.identity_id, identity_id, true) .value(this.address_name, address_name, true) .value(this.device_id, device_id, true) .value(this.identity_key_public_base64, identity_key) .value(this.trust_level, trust).perform(); } public QueryBuilder get_trusted_devices(int identity_id, string address_name) { return this.with_address(identity_id, address_name) .with(this.trust_level, "!=", TrustLevel.UNTRUSTED) .with(this.now_active, "=", true); } public QueryBuilder get_known_devices(int identity_id, string address_name) { return this.with_address(identity_id, address_name) .with(this.trust_level, "!=", TrustLevel.UNKNOWN) .without_null(this.identity_key_public_base64); } public QueryBuilder get_unknown_devices(int identity_id, string address_name) { return this.with_address(identity_id, address_name) .with_null(this.identity_key_public_base64); } public QueryBuilder get_new_devices(int identity_id, string address_name) { return this.with_address(identity_id, address_name) .with(this.trust_level, "=", TrustLevel.UNKNOWN) .without_null(this.identity_key_public_base64); } public Row? get_device(int identity_id, string address_name, int device_id) { return this.with_address(identity_id, address_name) .with(this.device_id, "=", device_id).single().row().inner; } public QueryBuilder get_with_device_id(int device_id) { return select().with(this.device_id, "=", device_id); } } public class TrustTable : Table { public Column identity_id = new Column.Integer("identity_id") { not_null = true }; public Column address_name = new Column.Text("address_name"); public Column blind_trust = new Column.BoolInt("blind_trust") { default = "1" } ; internal TrustTable(Database db) { base(db, "trust"); init({identity_id, address_name, blind_trust}); index("trust_idx", {identity_id, address_name}, true); } public bool get_blind_trust(int32 identity_id, string address_name) { return this.select().with(this.identity_id, "=", identity_id) .with(this.address_name, "=", address_name) .with(this.blind_trust, "=", true).count() > 0; } } public class IdentityTable : Table { public Column id = new Column.Integer("id") { primary_key = true, auto_increment = true }; public Column account_id = new Column.Integer("account_id") { unique = true, not_null = true }; public Column device_id = new Column.Integer("device_id") { not_null = true }; public Column identity_key_private_base64 = new Column.NonNullText("identity_key_private_base64"); public Column identity_key_public_base64 = new Column.NonNullText("identity_key_public_base64"); internal IdentityTable(Database db) { base(db, "identity"); init({id, account_id, device_id, identity_key_private_base64, identity_key_public_base64}); } public int get_id(int account_id) { int id = -1; Row? row = this.row_with(this.account_id, account_id).inner; if (row != null) id = ((!)row)[this.id]; return id; } } public class SignedPreKeyTable : Table { public Column identity_id = new Column.Integer("identity_id") { not_null = true }; public Column signed_pre_key_id = new Column.Integer("signed_pre_key_id") { not_null = true }; public Column record_base64 = new Column.NonNullText("record_base64"); internal SignedPreKeyTable(Database db) { base(db, "signed_pre_key"); init({identity_id, signed_pre_key_id, record_base64}); unique({identity_id, signed_pre_key_id}); index("signed_pre_key_idx", {identity_id, signed_pre_key_id}, true); } } public class PreKeyTable : Table { public Column identity_id = new Column.Integer("identity_id") { not_null = true }; public Column pre_key_id = new Column.Integer("pre_key_id") { not_null = true }; public Column record_base64 = new Column.NonNullText("record_base64"); internal PreKeyTable(Database db) { base(db, "pre_key"); init({identity_id, pre_key_id, record_base64}); unique({identity_id, pre_key_id}); index("pre_key_idx", {identity_id, pre_key_id}, true); } } public class SessionTable : Table { public Column identity_id = new Column.Integer("identity_id") { not_null = true }; public Column address_name = new Column.NonNullText("name"); public Column device_id = new Column.Integer("device_id") { not_null = true }; public Column record_base64 = new Column.NonNullText("record_base64"); internal SessionTable(Database db) { base(db, "session"); init({identity_id, address_name, device_id, record_base64}); unique({identity_id, address_name, device_id}); index("session_idx", {identity_id, address_name, device_id}, true); } } public class ContentItemMetaTable : Table { public Column content_item_id = new Column.Integer("message_id") { primary_key = true }; public Column identity_id = new Column.Integer("identity_id") { not_null = true }; public Column address_name = new Column.Text("address_name") { not_null = true }; public Column device_id = new Column.Integer("device_id") { not_null = true }; public Column trusted_when_received = new Column.BoolInt("trusted_when_received") { not_null = true, default = "1" }; internal ContentItemMetaTable(Database db) { base(db, "content_item_meta"); init({content_item_id, identity_id, address_name, device_id, trusted_when_received}); index("content_item_meta_device_idx", {identity_id, device_id, address_name}); } public RowOption with_content_item(ContentItem item) { return row_with(content_item_id, item.id); } public QueryBuilder with_device(int identity_id, string address_name, int device_id) { return select() .with(this.identity_id, "=", identity_id) .with(this.address_name, "=", address_name) .with(this.device_id, "=", device_id); } } public IdentityMetaTable identity_meta { get; private set; } public TrustTable trust { get; private set; } public IdentityTable identity { get; private set; } public SignedPreKeyTable signed_pre_key { get; private set; } public PreKeyTable pre_key { get; private set; } public SessionTable session { get; private set; } public ContentItemMetaTable content_item_meta { get; private set; } public Database(string fileName) { base(fileName, VERSION); identity_meta = new IdentityMetaTable(this); trust = new TrustTable(this); identity = new IdentityTable(this); signed_pre_key = new SignedPreKeyTable(this); pre_key = new PreKeyTable(this); session = new SessionTable(this); content_item_meta = new ContentItemMetaTable(this); init({identity_meta, trust, identity, signed_pre_key, pre_key, session, content_item_meta}); try { exec("PRAGMA synchronous=0"); } catch (Error e) { } } public override void migrate(long oldVersion) { if(oldVersion == 1) { try { exec("DROP INDEX identity_meta_idx"); exec("DROP INDEX identity_meta_list_idx"); exec("CREATE UNIQUE INDEX identity_meta_idx ON identity_meta (identity_id, address_name, device_id)"); exec("CREATE INDEX identity_meta_list_idx ON identity_meta (identity_id, address_name)"); } catch (Error e) { stderr.printf("Failed to migrate OMEMO database\n"); Process.exit(-1); } } } } }