From 01360a73ae8a148ca19c75e3b11167965b887d8b Mon Sep 17 00:00:00 2001
From: fiaxh <git@lightrise.org>
Date: Fri, 23 Nov 2018 20:11:32 +0100
Subject: FileProvider for aesgcm links
Co-authored-by: Thibaut Girka <thib@sitedethib.com>
---
plugins/CMakeLists.txt | 8 +-
plugins/http-files/src/file_provider.vala | 3 +-
plugins/omemo/CMakeLists.txt | 2 +
plugins/omemo/src/file_provider.vala | 155 ++++++++++++++++++++++++++++++
plugins/omemo/src/plugin.vala | 2 +
5 files changed, 164 insertions(+), 6 deletions(-)
create mode 100644 plugins/omemo/src/file_provider.vala
(limited to 'plugins')
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index 79523b8f..2ec82c91 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -1,3 +1,7 @@
+if(PLUGIN_ENABLED_http-files)
+ add_subdirectory(http-files)
+endif(PLUGIN_ENABLED_http-files)
+
if(PLUGIN_ENABLED_openpgp)
add_subdirectory(gpgme-vala)
add_subdirectory(openpgp)
@@ -8,10 +12,6 @@ if(PLUGIN_ENABLED_omemo)
add_subdirectory(signal-protocol)
endif(PLUGIN_ENABLED_omemo)
-if(PLUGIN_ENABLED_http-files)
- add_subdirectory(http-files)
-endif(PLUGIN_ENABLED_http-files)
-
if(PLUGIN_ENABLED_notification-sound)
add_subdirectory(notification-sound)
endif(PLUGIN_ENABLED_notification-sound)
diff --git a/plugins/http-files/src/file_provider.vala b/plugins/http-files/src/file_provider.vala
index 7b52a7fb..a0fe1218 100644
--- a/plugins/http-files/src/file_provider.vala
+++ b/plugins/http-files/src/file_provider.vala
@@ -44,7 +44,7 @@ public class FileProvider : Dino.FileProvider, Object {
if (outer.url_regex.match(message.body)) {
string? oob_url = Xmpp.Xep.OutOfBandData.get_url_from_message(message.stanza);
if (oob_url != null && oob_url == message.body) {
- outer.on_file_message(message, conversation);
+ yield outer.on_file_message(message, conversation);
}
}
return false;
@@ -82,7 +82,6 @@ public class FileProvider : Dino.FileProvider, Object {
var session = new Soup.Session();
var head_message = new Soup.Message("HEAD", url_body);
if (head_message != null) {
- SourceFunc callback = get_meta_info.callback;
yield session.send_async(head_message, null);
string? content_type = null, content_length = null;
diff --git a/plugins/omemo/CMakeLists.txt b/plugins/omemo/CMakeLists.txt
index f88abbd5..5ffb9c39 100644
--- a/plugins/omemo/CMakeLists.txt
+++ b/plugins/omemo/CMakeLists.txt
@@ -9,6 +9,7 @@ find_packages(OMEMO_PACKAGES REQUIRED
GModule
GObject
GTK3
+ Soup
)
set(RESOURCE_LIST
@@ -38,6 +39,7 @@ SOURCES
src/own_notifications.vala
src/encrypt_state.vala
src/encryption_list_entry.vala
+ src/file_provider.vala
src/manage_key_dialog.vala
src/manager.vala
src/message_flag.vala
diff --git a/plugins/omemo/src/file_provider.vala b/plugins/omemo/src/file_provider.vala
new file mode 100644
index 00000000..fb1c1d1e
--- /dev/null
+++ b/plugins/omemo/src/file_provider.vala
@@ -0,0 +1,155 @@
+using Gee;
+using Gtk;
+
+using Dino.Entities;
+using Xmpp;
+using Signal;
+
+namespace Dino.Plugins.Omemo {
+
+public class FileProvider : Dino.FileProvider, Object {
+ public string id { get { return "aesgcm"; } }
+
+ private StreamInteractor stream_interactor;
+ private Dino.Database dino_db;
+ private Regex url_regex;
+
+ private Gee.List<string> ignore_once = new ArrayList<string>();
+
+ public FileProvider(StreamInteractor stream_interactor, Dino.Database dino_db) {
+ this.stream_interactor = stream_interactor;
+ this.dino_db = dino_db;
+ this.url_regex = new Regex("""^aesgcm://(.*)#(([A-Fa-f0-9]{2}){48}|([A-Fa-f0-9]{2}){44})$""");
+
+ stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(new ReceivedMessageListener(this));
+ }
+
+ private class ReceivedMessageListener : MessageListener {
+
+ public string[] after_actions_const = new string[]{ "STORE" };
+ public override string action_group { get { return ""; } }
+ public override string[] after_actions { get { return after_actions_const; } }
+
+ private FileProvider outer;
+ private StreamInteractor stream_interactor;
+
+ public ReceivedMessageListener(FileProvider outer) {
+ this.outer = outer;
+ this.stream_interactor = outer.stream_interactor;
+ }
+
+ public override async bool run(Entities.Message message, Xmpp.MessageStanza stanza, Conversation conversation) {
+ if (message.body.has_prefix("aesgcm://") && outer.url_regex.match(message.body)) {
+ yield outer.on_file_message(message, conversation);
+ }
+ return false;
+ }
+ }
+
+ private async void on_file_message(Entities.Message message, Conversation conversation) {
+ MatchInfo match_info;
+ this.url_regex.match(message.body, 0, out match_info);
+ string url_without_hash = match_info.fetch(1);
+
+ FileTransfer file_transfer = new FileTransfer();
+ file_transfer.account = conversation.account;
+ file_transfer.counterpart = message.counterpart;
+ file_transfer.ourpart = message.ourpart;
+ file_transfer.encryption = Encryption.NONE;
+ file_transfer.time = message.time;
+ file_transfer.local_time = message.local_time;
+ file_transfer.direction = message.direction;
+ file_transfer.file_name = url_without_hash.substring(url_without_hash.last_index_of("/") + 1);
+ file_transfer.mime_type = null;
+ file_transfer.size = -1;
+ file_transfer.state = FileTransfer.State.NOT_STARTED;
+ file_transfer.provider = 0;
+ file_transfer.info = message.id.to_string();
+
+ if (stream_interactor.get_module(FileManager.IDENTITY).is_sender_trustworthy(file_transfer, conversation)) {
+ ContentItem? content_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item(conversation, 1, message.id);
+ if (content_item != null) {
+ stream_interactor.get_module(ContentItemStore.IDENTITY).set_item_hide(content_item, true);
+ }
+ yield get_meta_info(file_transfer);
+ file_incoming(file_transfer, conversation);
+ }
+ }
+
+ private async void get_meta_info(FileTransfer file_transfer) {
+ string url_body = dino_db.message.select({dino_db.message.body}).with(dino_db.message.id, "=", int.parse(file_transfer.info))[dino_db.message.body];
+ var session = new Soup.Session();
+ var head_message = new Soup.Message("HEAD", url_body);
+ if (head_message != null) {
+ yield session.send_async(head_message, null);
+
+ string? content_type = null, content_length = null;
+ head_message.response_headers.foreach((name, val) => {
+ if (name == "Content-Type") content_type = val;
+ if (name == "Content-Length") content_length = val;
+ });
+ file_transfer.mime_type = content_type;
+ file_transfer.size = int.parse(content_length);
+ }
+ }
+
+ public async void download(FileTransfer file_transfer, File file) {
+ try {
+ string url_body = dino_db.message.select({dino_db.message.body}).with(dino_db.message.id, "=", int.parse(file_transfer.info))[dino_db.message.body];
+ string url = "https://" + url_body.substring(9);
+ var session = new Soup.Session();
+ Soup.Request request = session.request(url);
+
+ file_transfer.input_stream = decrypt_file(yield request.send_async(null), url_body);
+ file_transfer.encryption = Encryption.OMEMO;
+
+ OutputStream os = file.create(FileCreateFlags.REPLACE_DESTINATION);
+ os.splice(file_transfer.input_stream, 0);
+ os.close();
+ file_transfer.path = file.get_basename();
+ file_transfer.input_stream = file.read();
+
+ file_transfer.state = FileTransfer.State.COMPLETE;
+ } catch (Error e) {
+ file_transfer.state = FileTransfer.State.FAILED;
+ }
+ }
+
+ public InputStream? decrypt_file(InputStream input_stream, string url) {
+ // Decode IV and key
+ MatchInfo match_info;
+ this.url_regex.match(url, 0, out match_info);
+ uint8[] iv_and_key = hex_to_bin(match_info.fetch(2).up());
+ uint8[] iv, key;
+ if (iv_and_key.length == 44) {
+ iv = iv_and_key[0:12];
+ key = iv_and_key[12:44];
+ } else {
+ iv = iv_and_key[0:16];
+ key = iv_and_key[16:48];
+ }
+
+ // Read data
+ uint8[] buf = new uint8[256];
+ Array<uint8> data = new Array<uint8>(false, true, 0);
+ size_t len = -1;
+ do {
+ len = input_stream.read(buf);
+ data.append_vals(buf, (uint) len);
+ } while(len > 0);
+
+ // Decrypt
+ return new MemoryInputStream.from_data(aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, data.data));
+ }
+
+ private uint8[] hex_to_bin(string hex) {
+ uint8[] bin = new uint8[hex.length / 2];
+ const string HEX = "0123456789ABCDEF";
+ for (int i = 0; i < hex.length / 2; i++) {
+ bin[i] = (uint8) (HEX.index_of_char(hex[i*2]) << 4) | HEX.index_of_char(hex[i*2+1]);
+ }
+ return bin;
+ }
+}
+
+}
diff --git a/plugins/omemo/src/plugin.vala b/plugins/omemo/src/plugin.vala
index ab22651f..be6229cc 100644
--- a/plugins/omemo/src/plugin.vala
+++ b/plugins/omemo/src/plugin.vala
@@ -49,6 +49,8 @@ public class Plugin : RootInterface, Object {
list.add(new StreamModule());
this.own_notifications = new OwnNotifications(this, this.app.stream_interactor, account);
});
+
+ app.stream_interactor.get_module(FileManager.IDENTITY).add_provider(new FileProvider(app.stream_interactor, app.db));
Manager.start(this.app.stream_interactor, db, trust_manager);
SimpleAction own_keys_action = new SimpleAction("own-keys", VariantType.INT32);
--
cgit v1.2.3-70-g09d2