Download & inline display images

1 files changed, 106 insertions, 0 deletions

diff --git a/plugins/http-files/src/file_provider.vala b/plugins/http-files/src/file_provider.vala
new file mode 100644
index 00000000..b4a69ddb
--- /dev/null
+++ b/plugins/http-files/src/file_provider.vala
@@ -0,0 +1,106 @@
+using Gee;
+using Gtk;
+
+using Dino.Entities;
+
+namespace Dino.Plugins.HttpFiles {
+
+public class FileProvider : Plugins.FileProvider, Object {
+    public string id { get { return "http"; } }
+
+    private StreamInteractor stream_interactor;
+    private Regex url_regex;
+    private Regex file_ext_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.url_regex = new Regex("""^(?i)\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))$""");
+        this.file_ext_regex = new Regex("""\.(png|jpg|jpeg|svg|gif)""");
+
+        Application app = GLib.Application.get_default() as Application;
+        app.plugin_registry.register_message_display(new FileMessageFilterDisplay(dino_db));
+
+        stream_interactor.get_module(MessageProcessor.IDENTITY).message_received.connect(check_message);
+        stream_interactor.get_module(MessageProcessor.IDENTITY).message_sent.connect(check_message);
+        stream_interactor.get_module(Manager.IDENTITY).uploading.connect((file_transfer) => {
+            file_transfer.provider = 0;
+            file_incoming(file_transfer);
+        });
+        stream_interactor.get_module(Manager.IDENTITY).uploaded.connect((file_transfer, url) => {
+            file_transfer.info = url;
+            ignore_once.add(url);
+        });
+    }
+
+    public void check_message(Message message, Conversation conversation) {
+        if (ignore_once.remove(message.body)) return;
+        bool in_roster = stream_interactor.get_module(RosterManager.IDENTITY).get_roster_item(conversation.account, conversation.counterpart) != null;
+        if (message.direction == Message.DIRECTION_RECEIVED && !in_roster) return;
+        if (message.body.length < 5) return;
+        if (!url_regex.match(message.body)) return;
+        if (!file_ext_regex.match(message.body)) return;
+
+        var session = new Soup.Session();
+        var head_message = new Soup.Message("HEAD", message.body);
+        if (head_message != null) {
+            session.send_message(head_message);
+            string? content_type = null, content_length = null;
+            print(message.body + ":\n");
+            head_message.response_headers.foreach((name, val) => {
+                print(name + " " + val + "\n");
+                if (name == "Content-Type") content_type = val;
+                if (name == "Content-Length") content_length = val;
+            });
+            if (content_type != null && content_type.has_prefix("image") && content_length != null && int.parse(content_length) < 5000000) {
+                Soup.Request request = session.request (message.body);
+                FileTransfer file_transfer = new FileTransfer();
+                file_transfer.account = conversation.account;
+                file_transfer.counterpart = conversation.counterpart;
+                file_transfer.ourpart = message.ourpart;
+                file_transfer.encryption = Encryption.NONE;
+                file_transfer.time = new DateTime.now_utc();
+                file_transfer.local_time = new DateTime.now_utc();
+                file_transfer.direction = message.direction;
+                file_transfer.input_stream = request.send();
+                file_transfer.file_name = message.body.substring(message.body.last_index_of("/") + 1);
+                file_transfer.mime_type = content_type;
+                file_transfer.size = int.parse(content_length);
+                file_transfer.state = FileTransfer.State.NOT_STARTED;
+                file_transfer.provider = 0;
+                file_transfer.info = message.body;
+                file_incoming(file_transfer);
+            }
+        }
+    }
+}
+
+public class FileMessageFilterDisplay : Plugins.MessageDisplayProvider, Object {
+    public string id { get; set; default="file_message_filter"; }
+    public double priority { get; set; default=10; }
+
+    public Database db;
+
+    public FileMessageFilterDisplay(Dino.Database db) {
+        this.db = db;
+    }
+
+    public bool can_display(Entities.Message? message) {
+        return message_is_file(message);
+    }
+
+    public Plugins.MetaConversationItem? get_item(Entities.Message message, Conversation conversation) {
+        return null;
+    }
+
+    private bool message_is_file(Entities.Message message) {
+        Qlite.QueryBuilder builder = db.file_transfer.select()
+                .with(db.file_transfer.info, "=", message.body)
+                .with(db.file_transfer.account_id, "=", message.account.id)
+                .with(db.file_transfer.counterpart_id, "=", db.get_jid_id(message.counterpart));
+        return builder.count() > 0;
+    }
+}
+
+}