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using Gdk;
using Gee;
using Xmpp;
using Dino.Entities;
namespace Dino {
public class FileManager : StreamInteractionModule, Object {
public static ModuleIdentity<FileManager> IDENTITY = new ModuleIdentity<FileManager>("file");
public string id { get { return IDENTITY.id; } }
public signal void upload_available(Account account);
public signal void received_file(FileTransfer file_transfer, Conversation conversation);
private StreamInteractor stream_interactor;
private Database db;
private Gee.List<FileSender> file_senders = new ArrayList<FileSender>();
public Gee.List<IncomingFileProcessor> incoming_processors = new ArrayList<IncomingFileProcessor>();
private Gee.List<OutgoingFileProcessor> outgoing_processors = new ArrayList<OutgoingFileProcessor>();
public static void start(StreamInteractor stream_interactor, Database db) {
FileManager m = new FileManager(stream_interactor, db);
stream_interactor.add_module(m);
}
public static string get_storage_dir() {
return Path.build_filename(Dino.get_storage_dir(), "files");
}
private FileManager(StreamInteractor stream_interactor, Database db) {
this.stream_interactor = stream_interactor;
this.db = db;
DirUtils.create_with_parents(get_storage_dir(), 0700);
}
public async void send_file(string uri, Conversation conversation) {
FileTransfer file_transfer = new FileTransfer();
file_transfer.account = conversation.account;
file_transfer.counterpart = conversation.counterpart;
file_transfer.ourpart = conversation.account.bare_jid;
file_transfer.direction = FileTransfer.DIRECTION_SENT;
file_transfer.time = new DateTime.now_utc();
file_transfer.local_time = new DateTime.now_utc();
file_transfer.encryption = conversation.encryption;
try {
File file = File.new_for_path(uri);
FileInfo file_info = file.query_info("*", FileQueryInfoFlags.NONE);
file_transfer.file_name = file_info.get_display_name();
file_transfer.mime_type = file_info.get_content_type();
file_transfer.size = (int)file_info.get_size();
file_transfer.input_stream = yield file.read_async();
} catch (Error e) {
file_transfer.state = FileTransfer.State.FAILED;
}
yield save_file(file_transfer);
file_transfer.persist(db);
foreach (OutgoingFileProcessor processor in outgoing_processors) {
if (processor.can_process(conversation, file_transfer)) {
processor.process(conversation, file_transfer);
}
}
foreach (FileSender file_sender in file_senders) {
if (file_sender.can_send(conversation, file_transfer)) {
file_sender.send_file(conversation, file_transfer);
break;
}
}
received_file(file_transfer, conversation);
}
public bool is_upload_available(Conversation conversation) {
foreach (FileSender file_sender in file_senders) {
if (file_sender.is_upload_available(conversation)) return true;
}
return false;
}
public Gee.List<FileTransfer> get_latest_transfers(Account account, Jid counterpart, int n) {
Qlite.QueryBuilder select = db.file_transfer.select()
.with(db.file_transfer.counterpart_id, "=", db.get_jid_id(counterpart))
.with(db.file_transfer.account_id, "=", account.id)
.order_by(db.file_transfer.local_time, "DESC")
.limit(n);
return get_transfers_from_qry(select);
}
public Gee.List<FileTransfer> get_transfers_before(Account account, Jid counterpart, DateTime before, int n) {
Qlite.QueryBuilder select = db.file_transfer.select()
.with(db.file_transfer.counterpart_id, "=", db.get_jid_id(counterpart))
.with(db.file_transfer.account_id, "=", account.id)
.with(db.file_transfer.local_time, "<", (long)before.to_unix())
.order_by(db.file_transfer.local_time, "DESC")
.limit(n);
return get_transfers_from_qry(select);
}
public Gee.List<FileTransfer> get_transfers_after(Account account, Jid counterpart, DateTime after, int n) {
Qlite.QueryBuilder select = db.file_transfer.select()
.with(db.file_transfer.counterpart_id, "=", db.get_jid_id(counterpart))
.with(db.file_transfer.account_id, "=", account.id)
.with(db.file_transfer.local_time, ">", (long)after.to_unix())
.limit(n);
return get_transfers_from_qry(select);
}
private Gee.List<FileTransfer> get_transfers_from_qry(Qlite.QueryBuilder select) {
Gee.List<FileTransfer> ret = new ArrayList<FileTransfer>();
foreach (Qlite.Row row in select) {
FileTransfer file_transfer = new FileTransfer.from_row(db, row, get_storage_dir());
ret.insert(0, file_transfer);
}
return ret;
}
public void add_provider(FileProvider file_provider) {
file_provider.file_incoming.connect((file_transfer, conversation) => { handle_incoming_file.begin(file_provider, file_transfer, conversation); });
}
public void add_sender(FileSender file_sender) {
// Order file_senders in reverse order of adding them -- HTTP is added
// later than Jingle.
file_senders.insert(0, file_sender);
file_sender.upload_available.connect((account) => {
upload_available(account);
});
}
public void add_incoming_processor(IncomingFileProcessor processor) {
incoming_processors.add(processor);
}
public void add_outgoing_processor(OutgoingFileProcessor processor) {
outgoing_processors.add(processor);
}
public bool is_sender_trustworthy(FileTransfer file_transfer, Conversation conversation) {
Jid relevant_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(file_transfer.from, conversation.account) ?? conversation.counterpart;
bool in_roster = stream_interactor.get_module(RosterManager.IDENTITY).get_roster_item(conversation.account, relevant_jid) != null;
return file_transfer.direction == FileTransfer.DIRECTION_SENT || in_roster;
}
private async void handle_incoming_file(FileProvider file_provider, FileTransfer file_transfer, Conversation conversation) {
if (!is_sender_trustworthy(file_transfer, conversation)) return;
if (file_transfer.size == -1) {
yield file_provider.get_meta_info(file_transfer);
}
if (file_transfer.size >= 0 && file_transfer.size < 5000000) {
string filename = Random.next_int().to_string("%x") + "_" + file_transfer.file_name;
File file = File.new_for_path(Path.build_filename(get_storage_dir(), filename));
yield file_provider.download(file_transfer, file);
try {
FileInfo file_info = file_transfer.get_file().query_info("*", FileQueryInfoFlags.NONE);
file_transfer.mime_type = file_info.get_content_type();
} catch (Error e) { }
file_transfer.persist(db);
received_file(file_transfer, conversation);
}
}
private async void save_file(FileTransfer file_transfer) {
try {
string filename = Random.next_int().to_string("%x") + "_" + file_transfer.file_name;
File file = File.new_for_path(Path.build_filename(get_storage_dir(), filename));
OutputStream os = file.create(FileCreateFlags.REPLACE_DESTINATION);
yield os.splice_async(file_transfer.input_stream, 0);
os.close();
file_transfer.state = FileTransfer.State.COMPLETE;
file_transfer.path = filename;
file_transfer.input_stream = yield file.read_async();
} catch (Error e) {
file_transfer.state = FileTransfer.State.FAILED;
}
}
}
public interface FileProvider : Object {
public signal void file_incoming(FileTransfer file_transfer, Conversation conversation);
public abstract async void get_meta_info(FileTransfer file_transfer);
public abstract async void download(FileTransfer file_transfer, File file);
}
public interface FileSender : Object {
public signal void upload_available(Account account);
public abstract bool is_upload_available(Conversation conversation);
public abstract bool can_send(Conversation conversation, FileTransfer file_transfer);
public abstract void send_file(Conversation conversation, FileTransfer file_transfer);
}
public interface IncomingFileProcessor : Object {
public abstract bool can_process(FileTransfer file_transfer);
public abstract void process(FileTransfer file_transfer);
}
public interface OutgoingFileProcessor : Object {
public abstract bool can_process(Conversation conversation, FileTransfer file_transfer);
public abstract void process(Conversation conversation, FileTransfer file_transfer);
}
}
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