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authorfiaxh <git@lightrise.org>2019-05-11 09:39:02 -0600
committerfiaxh <git@lightrise.org>2019-07-08 18:46:30 +0200
commit837de4063dbe398735a5b1d35bde1821c177b555 (patch)
tree81c46027a32a9ff14f2c4932260ac97d3574b848 /plugins/omemo/src/trust_manager.vala
parent701175fcd3b39aff46f52627af74b4de29363058 (diff)
downloaddino-837de4063dbe398735a5b1d35bde1821c177b555.tar.gz
dino-837de4063dbe398735a5b1d35bde1821c177b555.zip
OMEMO: Move files to fitting subdirectory
Diffstat (limited to 'plugins/omemo/src/trust_manager.vala')
-rw-r--r--plugins/omemo/src/trust_manager.vala346
1 files changed, 0 insertions, 346 deletions
diff --git a/plugins/omemo/src/trust_manager.vala b/plugins/omemo/src/trust_manager.vala
deleted file mode 100644
index d57adc35..00000000
--- a/plugins/omemo/src/trust_manager.vala
+++ /dev/null
@@ -1,346 +0,0 @@
-using Dino.Entities;
-using Gee;
-using Xmpp;
-using Signal;
-using Qlite;
-
-namespace Dino.Plugins.Omemo {
-
-public class TrustManager {
-
- private StreamInteractor stream_interactor;
- private Database db;
- private DecryptMessageListener decrypt_message_listener;
- private TagMessageListener tag_message_listener;
-
- private HashMap<Message, int> message_device_id_map = new HashMap<Message, int>(Message.hash_func, Message.equals_func);
-
- public TrustManager(StreamInteractor stream_interactor, Database db) {
- this.stream_interactor = stream_interactor;
- this.db = db;
-
- decrypt_message_listener = new DecryptMessageListener(stream_interactor, db, message_device_id_map);
- tag_message_listener = new TagMessageListener(stream_interactor, db, message_device_id_map);
- stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(decrypt_message_listener);
- stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(tag_message_listener);
- }
-
- public void set_blind_trust(Account account, Jid jid, bool blind_trust) {
- int identity_id = db.identity.get_id(account.id);
- if (identity_id < 0) return;
- db.trust.update()
- .with(db.trust.identity_id, "=", identity_id)
- .with(db.trust.address_name, "=", jid.bare_jid.to_string())
- .set(db.trust.blind_trust, blind_trust).perform();
- }
-
- public void set_device_trust(Account account, Jid jid, int device_id, Database.IdentityMetaTable.TrustLevel trust_level) {
- int identity_id = db.identity.get_id(account.id);
- db.identity_meta.update()
- .with(db.identity_meta.identity_id, "=", identity_id)
- .with(db.identity_meta.address_name, "=", jid.bare_jid.to_string())
- .with(db.identity_meta.device_id, "=", device_id)
- .set(db.identity_meta.trust_level, trust_level).perform();
- string selection = null;
- string[] selection_args = {};
- var app_db = Application.get_default().db;
- foreach (Row row in db.content_item_meta.with_device(identity_id, jid.bare_jid.to_string(), device_id).with(db.content_item_meta.trusted_when_received, "=", false)) {
- if (selection == null) {
- selection = @"$(app_db.content_item.id) = ?";
- } else {
- selection += @" OR $(app_db.content_item.id) = ?";
- }
- selection_args += row[db.content_item_meta.content_item_id].to_string();
- }
- if (selection != null) {
- app_db.content_item.update()
- .set(app_db.content_item.hide, trust_level == Database.IdentityMetaTable.TrustLevel.UNTRUSTED || trust_level == Database.IdentityMetaTable.TrustLevel.UNKNOWN)
- .where(selection, selection_args)
- .perform();
- }
- }
-
- private StanzaNode create_encrypted_key(uint8[] key, Address address, Store store) throws GLib.Error {
- SessionCipher cipher = store.create_session_cipher(address);
- CiphertextMessage device_key = cipher.encrypt(key);
- StanzaNode key_node = new StanzaNode.build("key", NS_URI)
- .put_attribute("rid", address.device_id.to_string())
- .put_node(new StanzaNode.text(Base64.encode(device_key.serialized)));
- if (device_key.type == CiphertextType.PREKEY) key_node.put_attribute("prekey", "true");
- return key_node;
- }
-
- public EncryptState encrypt(MessageStanza message, Jid self_jid, Gee.List<Jid> recipients, XmppStream stream, Account account) {
- EncryptState status = new EncryptState();
- if (!Plugin.ensure_context()) return status;
- if (message.to == null) return status;
-
- StreamModule module = stream.get_module(StreamModule.IDENTITY);
-
- try {
- //Check we have the bundles and device lists needed to send the message
- if (!is_known_address(account, self_jid)) return status;
- status.own_list = true;
- status.own_devices = get_trusted_devices(account, self_jid).size;
- status.other_waiting_lists = 0;
- status.other_devices = 0;
- foreach (Jid recipient in recipients) {
- if (!is_known_address(account, recipient)) {
- status.other_waiting_lists++;
- }
- if (status.other_waiting_lists > 0) return status;
- status.other_devices += get_trusted_devices(account, recipient).size;
- }
- if (status.own_devices == 0 || status.other_devices == 0) return status;
-
- //Create a key and use it to encrypt the message
- uint8[] key = new uint8[16];
- Plugin.get_context().randomize(key);
- uint8[] iv = new uint8[16];
- Plugin.get_context().randomize(iv);
-
- uint8[] aes_encrypt_result = aes_encrypt(Cipher.AES_GCM_NOPADDING, key, iv, message.body.data);
- uint8[] ciphertext = aes_encrypt_result[0:aes_encrypt_result.length-16];
- uint8[] tag = aes_encrypt_result[aes_encrypt_result.length-16:aes_encrypt_result.length];
- uint8[] keytag = new uint8[key.length + tag.length];
- Memory.copy(keytag, key, key.length);
- Memory.copy((uint8*)keytag + key.length, tag, tag.length);
-
- StanzaNode header;
- StanzaNode encrypted = new StanzaNode.build("encrypted", NS_URI).add_self_xmlns()
- .put_node(header = new StanzaNode.build("header", NS_URI)
- .put_attribute("sid", module.store.local_registration_id.to_string())
- .put_node(new StanzaNode.build("iv", NS_URI)
- .put_node(new StanzaNode.text(Base64.encode(iv)))))
- .put_node(new StanzaNode.build("payload", NS_URI)
- .put_node(new StanzaNode.text(Base64.encode(ciphertext))));
-
- //Encrypt the key for each recipient's device individually
- Address address = new Address(message.to.bare_jid.to_string(), 0);
- foreach (Jid recipient in recipients) {
- foreach(int32 device_id in get_trusted_devices(account, recipient)) {
- if (module.is_ignored_device(recipient, device_id)) {
- status.other_lost++;
- continue;
- }
- try {
- address.name = recipient.bare_jid.to_string();
- address.device_id = (int) device_id;
- StanzaNode key_node = create_encrypted_key(keytag, address, module.store);
- header.put_node(key_node);
- status.other_success++;
- } catch (Error e) {
- if (e.code == ErrorCode.UNKNOWN) status.other_unknown++;
- else status.other_failure++;
- }
- }
- }
- address.name = self_jid.bare_jid.to_string();
- foreach(int32 device_id in get_trusted_devices(account, self_jid)) {
- if (module.is_ignored_device(self_jid, device_id)) {
- status.own_lost++;
- continue;
- }
- if (device_id != module.store.local_registration_id) {
- address.device_id = (int) device_id;
- try {
- StanzaNode key_node = create_encrypted_key(keytag, address, module.store);
- header.put_node(key_node);
- status.own_success++;
- } catch (Error e) {
- if (e.code == ErrorCode.UNKNOWN) status.own_unknown++;
- else status.own_failure++;
- }
- }
- }
-
- message.stanza.put_node(encrypted);
- Xep.ExplicitEncryption.add_encryption_tag_to_message(message, NS_URI, "OMEMO");
- message.body = "[This message is OMEMO encrypted]";
- status.encrypted = true;
- } catch (Error e) {
- warning(@"Signal error while encrypting message: $(e.message)\n");
- }
- return status;
- }
-
- public bool is_known_address(Account account, Jid jid) {
- int identity_id = db.identity.get_id(account.id);
- if (identity_id < 0) return false;
- return db.identity_meta.with_address(identity_id, jid.to_string()).count() > 0;
- }
-
- public Gee.List<int32> get_trusted_devices(Account account, Jid jid) {
- Gee.List<int32> devices = new ArrayList<int32>();
- int identity_id = db.identity.get_id(account.id);
- if (identity_id < 0) return devices;
- foreach (Row device in db.identity_meta.get_trusted_devices(identity_id, jid.bare_jid.to_string())) {
- if(device[db.identity_meta.trust_level] != Database.IdentityMetaTable.TrustLevel.UNKNOWN || device[db.identity_meta.identity_key_public_base64] == null)
- devices.add(device[db.identity_meta.device_id]);
- }
- return devices;
- }
-
- private class TagMessageListener : MessageListener {
- public string[] after_actions_const = new string[]{ "STORE" };
- public override string action_group { get { return "DECRYPT_TAG"; } }
- public override string[] after_actions { get { return after_actions_const; } }
-
- private StreamInteractor stream_interactor;
- private Database db;
- private HashMap<Message, int> message_device_id_map;
-
- public TagMessageListener(StreamInteractor stream_interactor, Database db, HashMap<Message, int> message_device_id_map) {
- this.stream_interactor = stream_interactor;
- this.db = db;
- this.message_device_id_map = message_device_id_map;
- }
-
- public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) {
- int device_id = 0;
- if (message_device_id_map.has_key(message)) {
- device_id = message_device_id_map[message];
- message_device_id_map.unset(message);
- }
-
- // TODO: Handling of files
-
- ContentItem? content_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item(conversation, 1, message.id);
-
- if (content_item != null && device_id != 0) {
- Jid jid = content_item.jid;
- if (conversation.type_ == Conversation.Type.GROUPCHAT) {
- jid = message.real_jid;
- }
-
- int identity_id = db.identity.get_id(conversation.account.id);
- Database.IdentityMetaTable.TrustLevel trust_level = (Database.IdentityMetaTable.TrustLevel) db.identity_meta.get_device(identity_id, jid.bare_jid.to_string(), device_id)[db.identity_meta.trust_level];
- if (trust_level == Database.IdentityMetaTable.TrustLevel.UNTRUSTED || trust_level == Database.IdentityMetaTable.TrustLevel.UNKNOWN) {
- stream_interactor.get_module(ContentItemStore.IDENTITY).set_item_hide(content_item, true);
- }
-
- db.content_item_meta.insert()
- .value(db.content_item_meta.content_item_id, content_item.id)
- .value(db.content_item_meta.identity_id, identity_id)
- .value(db.content_item_meta.address_name, jid.bare_jid.to_string())
- .value(db.content_item_meta.device_id, device_id)
- .value(db.content_item_meta.trusted_when_received, trust_level != Database.IdentityMetaTable.TrustLevel.UNTRUSTED)
- .perform();
- }
- return false;
- }
- }
-
- private class DecryptMessageListener : MessageListener {
- public string[] after_actions_const = new string[]{ };
- public override string action_group { get { return "DECRYPT"; } }
- public override string[] after_actions { get { return after_actions_const; } }
-
- private StreamInteractor stream_interactor;
- private Database db;
- private HashMap<Message, int> message_device_id_map;
-
- public DecryptMessageListener(StreamInteractor stream_interactor, Database db, HashMap<Message, int> message_device_id_map) {
- this.stream_interactor = stream_interactor;
- this.db = db;
- this.message_device_id_map = message_device_id_map;
- }
-
- public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) {
- Store store = stream_interactor.module_manager.get_module(conversation.account, StreamModule.IDENTITY).store;
-
- StanzaNode? _encrypted = stanza.stanza.get_subnode("encrypted", NS_URI);
- if (_encrypted == null || MessageFlag.get_flag(stanza) != null || stanza.from == null) return false;
- StanzaNode encrypted = (!)_encrypted;
- if (message.body == null && Xep.ExplicitEncryption.get_encryption_tag(stanza) == NS_URI) {
- message.body = "[This message is OMEMO encrypted]"; // TODO temporary
- };
- if (!Plugin.ensure_context()) return false;
- MessageFlag flag = new MessageFlag();
- stanza.add_flag(flag);
- StanzaNode? _header = encrypted.get_subnode("header");
- if (_header == null) return false;
- StanzaNode header = (!)_header;
- int sid = header.get_attribute_int("sid");
- if (sid <= 0) return false;
- foreach (StanzaNode key_node in header.get_subnodes("key")) {
- if (key_node.get_attribute_int("rid") == store.local_registration_id) {
- try {
- string? payload = encrypted.get_deep_string_content("payload");
- string? iv_node = header.get_deep_string_content("iv");
- string? key_node_content = key_node.get_string_content();
- if (payload == null || iv_node == null || key_node_content == null) continue;
- uint8[] key;
- uint8[] ciphertext = Base64.decode((!)payload);
- uint8[] iv = Base64.decode((!)iv_node);
- Gee.List<Jid> possible_jids = new ArrayList<Jid>();
- if (conversation.type_ == Conversation.Type.CHAT) {
- possible_jids.add(stanza.from);
- } else {
- Jid? real_jid = message.real_jid;
- if (real_jid != null) {
- possible_jids.add(real_jid);
- } else {
- foreach (Row row in db.identity_meta.get_with_device_id(sid)) {
- possible_jids.add(new Jid(row[db.identity_meta.address_name]));
- }
- }
- }
-
- foreach (Jid possible_jid in possible_jids) {
- try {
- Address address = new Address(possible_jid.bare_jid.to_string(), header.get_attribute_int("sid"));
- if (key_node.get_attribute_bool("prekey")) {
- PreKeySignalMessage msg = Plugin.get_context().deserialize_pre_key_signal_message(Base64.decode((!)key_node_content));
- SessionCipher cipher = store.create_session_cipher(address);
- key = cipher.decrypt_pre_key_signal_message(msg);
- } else {
- SignalMessage msg = Plugin.get_context().deserialize_signal_message(Base64.decode((!)key_node_content));
- SessionCipher cipher = store.create_session_cipher(address);
- key = cipher.decrypt_signal_message(msg);
- }
- //address.device_id = 0; // TODO: Hack to have address obj live longer
-
- if (key.length >= 32) {
- int authtaglength = key.length - 16;
- uint8[] new_ciphertext = new uint8[ciphertext.length + authtaglength];
- uint8[] new_key = new uint8[16];
- Memory.copy(new_ciphertext, ciphertext, ciphertext.length);
- Memory.copy((uint8*)new_ciphertext + ciphertext.length, (uint8*)key + 16, authtaglength);
- Memory.copy(new_key, key, 16);
- ciphertext = new_ciphertext;
- key = new_key;
- }
-
- message.body = arr_to_str(aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, ciphertext));
- message_device_id_map[message] = address.device_id;
- message.encryption = Encryption.OMEMO;
- flag.decrypted = true;
- } catch (Error e) {
- continue;
- }
-
- // If we figured out which real jid a message comes from due to
- if (conversation.type_ == Conversation.Type.GROUPCHAT && message.real_jid == null) {
- message.real_jid = possible_jid;
- }
- break;
- }
- } catch (Error e) {
- warning(@"Signal error while decrypting message: $(e.message)\n");
- }
- }
- }
- return false;
- }
-
- private string arr_to_str(uint8[] arr) {
- // null-terminate the array
- uint8[] rarr = new uint8[arr.length+1];
- Memory.copy(rarr, arr, arr.length);
- return (string)rarr;
- }
- }
-}
-
-}