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authorMarvin W <git@larma.de>2019-09-10 20:56:00 +0200
committerMarvin W <git@larma.de>2019-09-16 23:31:11 +0200
commite899668213ee8f7d3566bb5754b488d8633c30c7 (patch)
tree30119a9068abed58ad692de8fcf5723c6e441de8 /libdino/src/service/jingle_file_transfers.vala
parent87d64524c8e4397515be045901427e71b660134f (diff)
downloaddino-e899668213ee8f7d3566bb5754b488d8633c30c7.tar.gz
dino-e899668213ee8f7d3566bb5754b488d8633c30c7.zip
Add JET support
Diffstat (limited to 'libdino/src/service/jingle_file_transfers.vala')
-rw-r--r--libdino/src/service/jingle_file_transfers.vala107
1 files changed, 93 insertions, 14 deletions
diff --git a/libdino/src/service/jingle_file_transfers.vala b/libdino/src/service/jingle_file_transfers.vala
index 0a93979b..182213bb 100644
--- a/libdino/src/service/jingle_file_transfers.vala
+++ b/libdino/src/service/jingle_file_transfers.vala
@@ -6,6 +6,56 @@ using Dino.Entities;
namespace Dino {
+public interface JingleFileEncryptionHelper : Object {
+ public abstract bool can_transfer(Conversation conversation);
+ public abstract bool can_encrypt(Conversation conversation, FileTransfer file_transfer, Jid? full_jid = null);
+ public abstract string? get_precondition_name(Conversation conversation, FileTransfer file_transfer);
+ public abstract Object? get_precondition_options(Conversation conversation, FileTransfer file_transfer);
+ public abstract FileMeta complete_meta(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta, Xmpp.Xep.JingleFileTransfer.FileTransfer jingle_transfer);
+}
+
+public class JingleFileEncryptionHelperTransferOnly : JingleFileEncryptionHelper, Object {
+ public bool can_transfer(Conversation conversation) {
+ return true;
+ }
+ public bool can_encrypt(Conversation conversation, FileTransfer file_transfer, Jid? full_jid) {
+ return false;
+ }
+ public string? get_precondition_name(Conversation conversation, FileTransfer file_transfer) {
+ return null;
+ }
+ public Object? get_precondition_options(Conversation conversation, FileTransfer file_transfer) {
+ return null;
+ }
+ public FileMeta complete_meta(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta, Xmpp.Xep.JingleFileTransfer.FileTransfer jingle_transfer) {
+ return file_meta;
+ }
+}
+
+public class JingleFileHelperRegistry {
+ private static JingleFileHelperRegistry INSTANCE;
+ public static JingleFileHelperRegistry instance { get {
+ if (INSTANCE == null) {
+ INSTANCE = new JingleFileHelperRegistry();
+ INSTANCE.add_encryption_helper(Encryption.NONE, new JingleFileEncryptionHelperTransferOnly());
+ }
+ return INSTANCE;
+ } }
+
+ internal HashMap<Encryption, JingleFileEncryptionHelper> encryption_helpers = new HashMap<Encryption, JingleFileEncryptionHelper>();
+
+ public void add_encryption_helper(Encryption encryption, JingleFileEncryptionHelper helper) {
+ encryption_helpers[encryption] = helper;
+ }
+
+ public JingleFileEncryptionHelper? get_encryption_helper(Encryption encryption) {
+ if (encryption_helpers.has_key(encryption)) {
+ return encryption_helpers[encryption];
+ }
+ return null;
+ }
+}
+
public class JingleFileProvider : FileProvider, Object {
private StreamInteractor stream_interactor;
@@ -29,7 +79,15 @@ public class JingleFileProvider : FileProvider, Object {
}
public async FileMeta get_meta_info(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) throws FileReceiveError {
- return file_meta;
+ Xmpp.Xep.JingleFileTransfer.FileTransfer? jingle_file_transfer = file_transfers[file_transfer.info];
+ if (jingle_file_transfer == null) {
+ throw new FileReceiveError.DOWNLOAD_FAILED("Transfer data not available anymore");
+ }
+ FileMeta meta = file_meta;
+ foreach (JingleFileEncryptionHelper helper in JingleFileHelperRegistry.instance.encryption_helpers.values) {
+ meta = helper.complete_meta(file_transfer, receive_data, meta, jingle_file_transfer);
+ }
+ return meta;
}
public async InputStream download(FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) throws FileReceiveError {
@@ -39,6 +97,9 @@ public class JingleFileProvider : FileProvider, Object {
if (jingle_file_transfer == null) {
throw new FileReceiveError.DOWNLOAD_FAILED("Transfer data not available anymore");
}
+ foreach (JingleFileEncryptionHelper helper in JingleFileHelperRegistry.instance.encryption_helpers.values) {
+ helper.complete_meta(file_transfer, receive_data, file_meta, jingle_file_transfer);
+ }
try {
jingle_file_transfer.accept(stream);
} catch (IOError e) {
@@ -83,6 +144,10 @@ public class JingleFileSender : FileSender, Object {
}
public bool is_upload_available(Conversation conversation) {
+ JingleFileEncryptionHelper? helper = JingleFileHelperRegistry.instance.get_encryption_helper(conversation.encryption);
+ if (helper == null) return false;
+ if (!helper.can_transfer(conversation)) return false;
+
XmppStream? stream = stream_interactor.get_stream(conversation.account);
if (stream == null) return false;
@@ -98,32 +163,46 @@ public class JingleFileSender : FileSender, Object {
}
public bool can_send(Conversation conversation, FileTransfer file_transfer) {
- if (conversation.encryption != Encryption.NONE) return false;
-
- XmppStream? stream = stream_interactor.get_stream(file_transfer.account);
- if (stream == null) return false;
+ // No file specific restrictions apply to Jingle file transfers
+ return is_upload_available(conversation);
+ }
- foreach (Jid full_jid in stream.get_flag(Presence.Flag.IDENTITY).get_resources(conversation.counterpart)) {
- if (stream.get_module(Xep.JingleFileTransfer.Module.IDENTITY).is_available(stream, full_jid)) {
- return true;
- }
- }
- return false;
+ public bool can_encrypt(Conversation conversation, FileTransfer file_transfer) {
+ JingleFileEncryptionHelper? helper = JingleFileHelperRegistry.instance.get_encryption_helper(file_transfer.encryption);
+ if (helper == null) return false;
+ return helper.can_encrypt(conversation, file_transfer);
}
public async FileSendData? prepare_send_file(Conversation conversation, FileTransfer file_transfer, FileMeta file_meta) throws FileSendError {
+ if (file_meta is HttpFileMeta) {
+ throw new FileSendError.UPLOAD_FAILED("Cannot upload http file meta over Jingle");
+ }
return new FileSendData();
}
- public async void send_file(Conversation conversation, FileTransfer file_transfer, FileSendData file_send_data) throws FileSendError {
- // TODO(hrxi) What should happen if `stream == null`?
+ public async void send_file(Conversation conversation, FileTransfer file_transfer, FileSendData file_send_data, FileMeta file_meta) throws FileSendError {
XmppStream? stream = stream_interactor.get_stream(file_transfer.account);
+ if (stream == null) throw new FileSendError.UPLOAD_FAILED("No stream available");
+ JingleFileEncryptionHelper? helper = JingleFileHelperRegistry.instance.get_encryption_helper(file_transfer.encryption);
+ bool must_encrypt = helper != null && helper.can_encrypt(conversation, file_transfer);
foreach (Jid full_jid in stream.get_flag(Presence.Flag.IDENTITY).get_resources(conversation.counterpart)) {
// TODO(hrxi): Prioritization of transports (and resources?).
if (!stream.get_module(Xep.JingleFileTransfer.Module.IDENTITY).is_available(stream, full_jid)) {
continue;
}
- stream.get_module(Xep.JingleFileTransfer.Module.IDENTITY).offer_file_stream.begin(stream, full_jid, file_transfer.input_stream, file_transfer.file_name, file_transfer.size);
+ if (must_encrypt && !helper.can_encrypt(conversation, file_transfer, full_jid)) {
+ continue;
+ }
+ string? precondition_name = null;
+ Object? precondition_options = null;
+ if (must_encrypt) {
+ precondition_name = helper.get_precondition_name(conversation, file_transfer);
+ precondition_options = helper.get_precondition_options(conversation, file_transfer);
+ if (precondition_name == null) {
+ throw new FileSendError.ENCRYPTION_FAILED("Should have created a precondition, but did not");
+ }
+ }
+ yield stream.get_module(Xep.JingleFileTransfer.Module.IDENTITY).offer_file_stream(stream, full_jid, file_transfer.input_stream, file_transfer.server_file_name, file_meta.size, precondition_name, precondition_options);
return;
}
}