Crash hotfix for the ANNOYING PALOCHKA fix

This reverts commit 563cb2d624.

.gitignore

@@ -3,3 +3,5 @@ telegabber
 sessions/
 session.dat
 session.dat.new
+release/
+tdlib/

Dockerfile

@@ -0,0 +1,36 @@
+FROM golang:1.19-bookworm AS base
+
+RUN apt-get update
+run apt-get install -y libssl-dev cmake build-essential gperf libz-dev make git
+
+FROM base AS tdlib
+
+ARG TD_COMMIT
+ARG MAKEOPTS
+RUN git clone https://github.com/tdlib/td /src/
+RUN git -C /src/ checkout "${TD_COMMIT}"
+RUN mkdir build
+WORKDIR /build/
+RUN cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/compiled/ /src/
+RUN cmake --build . ${MAKEOPTS}
+RUN make install
+
+FROM base AS cache
+ARG VERSION
+COPY --from=tdlib /compiled/ /usr/local/
+COPY ./ /src
+RUN git -C /src checkout "${VERSION}"
+WORKDIR /src
+RUN go get
+
+FROM cache AS build
+ARG MAKEOPTS
+WORKDIR /src
+RUN make ${MAKEOPTS}
+
+FROM scratch AS telegabber
+COPY --from=build /src/release/telegabber /usr/local/bin/
+ENTRYPOINT ["/usr/local/bin/telegabber"]
+
+FROM scratch AS binaries
+COPY --from=telegabber /usr/local/bin/telegabber /

Makefile

@@ -1,10 +1,25 @@
 .PHONY: all test
 
+COMMIT := $(shell git rev-parse --short HEAD)
+TD_COMMIT := "5bbfc1cf5dab94f82e02f3430ded7241d4653551"
+VERSION := "v1.12.8"
+MAKEOPTS := "-j4"
+
 all:
-	go build -o telegabber
+	mkdir -p release
+	go build -ldflags "-X main.commit=${COMMIT}" -o release/telegabber
 
 test:
-	go test -v ./config ./ ./telegram ./xmpp/gateway ./persistence ./telegram/formatter
+	go test -v ./config ./ ./telegram ./xmpp ./xmpp/gateway ./persistence ./telegram/formatter ./badger
 
 lint:
 	$(GOPATH)/bin/golint ./...
+
+build_indocker:
+	docker build --build-arg "TD_COMMIT=${TD_COMMIT}" --build-arg "VERSION=${VERSION}" --build-arg "MAKEOPTS=${MAKEOPTS}" --output=release --target binaries .
+
+build_indocker_staging:
+	DOCKER_BUILDKIT=1 docker build --build-arg "TD_COMMIT=${TD_COMMIT}" --build-arg "MAKEOPTS=${MAKEOPTS}" --network host --output=release --target binaries -f staging.Dockerfile .
+
+build_tdlib:
+	DOCKER_BUILDKIT=1 docker build --build-arg "TD_COMMIT=${TD_COMMIT}" --build-arg "MAKEOPTS=${MAKEOPTS}" --output=tdlib --target binaries -f tdlib.Dockerfile .

README.md

@@ -75,6 +75,7 @@ It is good idea to obtain Telegram API ID from [**https://my.telegram.org**](htt
 * `--profiling-port=xxxx`: start the pprof server on port `xxxx`. Access is limited to localhost.
 * `--config=/bla/bla/config.yml`: set the config file path (default: `config.yml`).
 * `--schema=/bla/bla/schema.json`: set the schema file path (default: `./config_schema.json`).
+* `--ids=/bla/bla/ids`: set the folder for ids database (default: `ids`).
 
 ### How to receive files from Telegram ###
 
@@ -142,3 +143,34 @@ server {
 ```
 
 Finally, update `:upload:` in your config.yml to match `server_name` in nginx config.
+
+### Carbons ###
+
+Telegabber needs special privileges according to XEP-0356 to simulate message carbons from the users (to display messages they have sent earlier or via other clients). Example configuration for Prosody:
+
+```
+modules_enabled = {
+        [...]
+
+        "privilege";
+}
+
+[...]
+
+Component "telegabber.yourdomain.tld"
+    component_secret = "yourpassword"
+    modules_enabled = {"privilege"}
+
+[...]
+
+VirtualHost "yourdomain.tld"
+    [...]
+
+    privileged_entities = {
+        [...]
+
+        ["telegabber.yourdomain.tld"] = {
+            message = "outgoing";
+        },
+    }
+```

badger/ids.go

@@ -0,0 +1,230 @@
+package badger
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strconv"
+
+	badger "github.com/dgraph-io/badger/v4"
+	log "github.com/sirupsen/logrus"
+)
+
+// IdsDB represents a Badger database
+type IdsDB struct {
+	db *badger.DB
+}
+
+// IdsDBOpen returns a new DB object
+func IdsDBOpen(path string) IdsDB {
+	bdb, err := badger.Open(badger.DefaultOptions(path))
+	if err != nil {
+		log.Errorf("Failed to open ids database: %v, falling back to in-memory database", path)
+		bdb, err = badger.Open(badger.DefaultOptions("").WithInMemory(true))
+		if err != nil {
+			log.Fatalf("Couldn't initialize the ids database")
+		}
+	}
+
+	return IdsDB{
+		db: bdb,
+	}
+}
+
+// Set stores an id pair
+func (db *IdsDB) Set(tgAccount, xmppAccount string, tgChatId, tgMsgId int64, xmppId string) error {
+	bPrefix := toKeyPrefix(tgAccount, xmppAccount)
+	bTgId := toTgByteString(tgChatId, tgMsgId)
+	bXmppId := toXmppByteString(xmppId)
+	bTgKey := toByteKey(bPrefix, bTgId, "tg")
+	bXmppKey := toByteKey(bPrefix, bXmppId, "xmpp")
+
+	return db.db.Update(func(txn *badger.Txn) error {
+		if err := txn.Set(bTgKey, bXmppId); err != nil {
+			return err
+		}
+		return txn.Set(bXmppKey, bTgId)
+	})
+}
+
+func (db *IdsDB) getByteValue(key []byte) ([]byte, error) {
+	var valCopy []byte
+	err := db.db.View(func(txn *badger.Txn) error {
+		item, err := txn.Get(key)
+		if err != nil {
+			return err
+		}
+
+		valCopy, err = item.ValueCopy(nil)
+		return err
+	})
+	return valCopy, err
+}
+
+// GetByTgIds obtains an XMPP id by Telegram chat/message ids
+func (db *IdsDB) GetByTgIds(tgAccount, xmppAccount string, tgChatId, tgMsgId int64) (string, error) {
+	val, err := db.getByteValue(toByteKey(
+		toKeyPrefix(tgAccount, xmppAccount),
+		toTgByteString(tgChatId, tgMsgId),
+		"tg",
+	))
+	if err != nil {
+		return "", err
+	}
+	return string(val), nil
+}
+
+// GetByXmppId obtains Telegram chat/message ids by an XMPP id
+func (db *IdsDB) GetByXmppId(tgAccount, xmppAccount, xmppId string) (int64, int64, error) {
+	val, err := db.getByteValue(toByteKey(
+		toKeyPrefix(tgAccount, xmppAccount),
+		toXmppByteString(xmppId),
+		"xmpp",
+	))
+	if err != nil {
+		return 0, 0, err
+	}
+	return splitTgByteString(val)
+}
+
+func toKeyPrefix(tgAccount, xmppAccount string) []byte {
+	return []byte(fmt.Sprintf("%v/%v/", tgAccount, xmppAccount))
+}
+
+func toByteKey(prefix, suffix []byte, typ string) []byte {
+	key := make([]byte, 0, len(prefix)+len(suffix)+6)
+	key = append(key, prefix...)
+	key = append(key, []byte(typ)...)
+	key = append(key, []byte("/")...)
+	key = append(key, suffix...)
+	return key
+}
+
+func toTgByteString(tgChatId, tgMsgId int64) []byte {
+	return []byte(fmt.Sprintf("%v/%v", tgChatId, tgMsgId))
+}
+
+func toXmppByteString(xmppId string) []byte {
+	return []byte(xmppId)
+}
+
+func splitTgByteString(val []byte) (int64, int64, error) {
+	parts := bytes.Split(val, []byte("/"))
+	if len(parts) != 2 {
+		return 0, 0, errors.New("Couldn't parse tg id pair")
+	}
+	tgChatId, err := strconv.ParseInt(string(parts[0]), 10, 64)
+	if err != nil {
+		return 0, 0, err
+	}
+	tgMsgId, err := strconv.ParseInt(string(parts[1]), 10, 64)
+	return tgChatId, tgMsgId, err
+}
+
+// ReplaceIdPair replaces an old entry by XMPP ID with both new XMPP and Tg ID
+func (db *IdsDB) ReplaceIdPair(tgAccount, xmppAccount, oldXmppId, newXmppId string, newMsgId int64) error {
+	// read old pair
+	chatId, oldMsgId, err := db.GetByXmppId(tgAccount, xmppAccount, oldXmppId)
+	if err != nil {
+		return err
+	}
+
+	bPrefix := toKeyPrefix(tgAccount, xmppAccount)
+
+	bOldTgId := toTgByteString(chatId, oldMsgId)
+	bOldXmppId := toXmppByteString(oldXmppId)
+	bOldTgKey := toByteKey(bPrefix, bOldTgId, "tg")
+	bOldXmppKey := toByteKey(bPrefix, bOldXmppId, "xmpp")
+
+	bTgId := toTgByteString(chatId, newMsgId)
+	bXmppId := toXmppByteString(newXmppId)
+	bTgKey := toByteKey(bPrefix, bTgId, "tg")
+	bXmppKey := toByteKey(bPrefix, bXmppId, "xmpp")
+
+	return db.db.Update(func(txn *badger.Txn) error {
+		// save new pair
+		if err := txn.Set(bTgKey, bXmppId); err != nil {
+			return err
+		}
+		if err := txn.Set(bXmppKey, bTgId); err != nil {
+			return err
+		}
+		// delete old pair
+		if err := txn.Delete(bOldTgKey); err != nil {
+			return err
+		}
+		return txn.Delete(bOldXmppKey)
+	})
+}
+
+// ReplaceXmppId replaces an old XMPP ID with new XMPP ID and keeps Tg ID intact
+func (db *IdsDB) ReplaceXmppId(tgAccount, xmppAccount, oldXmppId, newXmppId string) error {
+	// read old Tg IDs
+	chatId, msgId, err := db.GetByXmppId(tgAccount, xmppAccount, oldXmppId)
+	if err != nil {
+		return err
+	}
+
+	bPrefix := toKeyPrefix(tgAccount, xmppAccount)
+
+	bOldXmppId := toXmppByteString(oldXmppId)
+	bOldXmppKey := toByteKey(bPrefix, bOldXmppId, "xmpp")
+
+	bTgId := toTgByteString(chatId, msgId)
+	bXmppId := toXmppByteString(newXmppId)
+	bTgKey := toByteKey(bPrefix, bTgId, "tg")
+	bXmppKey := toByteKey(bPrefix, bXmppId, "xmpp")
+
+	return db.db.Update(func(txn *badger.Txn) error {
+		// save new pair
+		if err := txn.Set(bTgKey, bXmppId); err != nil {
+			return err
+		}
+		if err := txn.Set(bXmppKey, bTgId); err != nil {
+			return err
+		}
+		// delete old xmpp->tg entry
+		return txn.Delete(bOldXmppKey)
+	})
+}
+
+// ReplaceTgId replaces an old Tg ID with new Tg ID and keeps Tg chat ID and XMPP ID intact
+func (db *IdsDB) ReplaceTgId(tgAccount, xmppAccount string, chatId, oldMsgId, newMsgId int64) error {
+	// read old XMPP ID
+	xmppId, err := db.GetByTgIds(tgAccount, xmppAccount, chatId, oldMsgId)
+	if err != nil {
+		return err
+	}
+
+	bPrefix := toKeyPrefix(tgAccount, xmppAccount)
+
+	bOldTgId := toTgByteString(chatId, oldMsgId)
+	bOldTgKey := toByteKey(bPrefix, bOldTgId, "tg")
+
+	bTgId := toTgByteString(chatId, newMsgId)
+	bXmppId := toXmppByteString(xmppId)
+	bTgKey := toByteKey(bPrefix, bTgId, "tg")
+	bXmppKey := toByteKey(bPrefix, bXmppId, "xmpp")
+
+	return db.db.Update(func(txn *badger.Txn) error {
+		// save new pair
+		if err := txn.Set(bTgKey, bXmppId); err != nil {
+			return err
+		}
+		if err := txn.Set(bXmppKey, bTgId); err != nil {
+			return err
+		}
+		// delete old tg->xmpp entry
+		return txn.Delete(bOldTgKey)
+	})
+}
+
+// Gc compacts the value log
+func (db *IdsDB) Gc() {
+	db.db.RunValueLogGC(0.7)
+}
+
+// Close closes a DB
+func (db *IdsDB) Close() {
+	db.db.Close()
+}

badger/ids_test.go

@@ -0,0 +1,72 @@
+package badger
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestToKeyPrefix(t *testing.T) {
+	if !reflect.DeepEqual(toKeyPrefix("+123456789", "test@example.com"), []byte("+123456789/test@example.com/")) {
+		t.Error("Wrong prefix")
+	}
+}
+
+func TestToByteKey(t *testing.T) {
+	if !reflect.DeepEqual(toByteKey([]byte("ababa/galamaga/"), []byte("123"), "ppp"), []byte("ababa/galamaga/ppp/123")) {
+		t.Error("Wrong key")
+	}
+}
+
+func TestToTgByteString(t *testing.T) {
+	if !reflect.DeepEqual(toTgByteString(-2345, 6789), []byte("-2345/6789")) {
+		t.Error("Wrong tg string")
+	}
+}
+
+func TestToXmppByteString(t *testing.T) {
+	if !reflect.DeepEqual(toXmppByteString("aboba"), []byte("aboba")) {
+		t.Error("Wrong xmpp string")
+	}
+}
+
+func TestSplitTgByteStringUnparsable(t *testing.T) {
+	_, _, err := splitTgByteString([]byte("@#U*&$(@#"))
+	if err == nil {
+		t.Error("Unparsable should not be parsed")
+		return
+	}
+	if err.Error() != "Couldn't parse tg id pair" {
+		t.Error("Wrong parse error")
+	}
+}
+
+func TestSplitTgByteManyParts(t *testing.T) {
+	_, _, err := splitTgByteString([]byte("a/b/c/d"))
+	if err == nil {
+		t.Error("Should not parse many parts")
+		return
+	}
+	if err.Error() != "Couldn't parse tg id pair" {
+		t.Error("Wrong parse error")
+	}
+}
+
+func TestSplitTgByteNonNumeric(t *testing.T) {
+	_, _, err := splitTgByteString([]byte("0/a"))
+	if err == nil {
+		t.Error("Should not parse non-numeric msgid")
+	}
+}
+
+func TestSplitTgByteSuccess(t *testing.T) {
+	chatId, msgId, err := splitTgByteString([]byte("-198282398/23798478"))
+	if err != nil {
+		t.Error("Should be parsed well")
+	}
+	if chatId != -198282398 {
+		t.Error("Wrong chatId")
+	}
+	if msgId != 23798478 {
+		t.Error("Wrong msgId")
+	}
+}

config.yml.example

@@ -4,6 +4,8 @@
         :path: '/var/www/telegabber/content' # webserver workdir
         :link: 'http://tlgrm.localhost/content' # webserver public address
         :upload: 'https:///xmppfiles.localhost' # xmpp http upload address
+        :user: 'www-data' # owner of content files
+        :quota: '256MB' # maximum storage size
     :tdlib_verbosity: 1
     :tdlib:
         :datadir: './sessions/'

config/config.go

@@ -38,6 +38,8 @@ type TelegramContentConfig struct {
 	Path   string `yaml:":path"`
 	Link   string `yaml:":link"`
 	Upload string `yaml:":upload"`
+	User   string `yaml:":user"`
+	Quota  string `yaml:":quota"`
 }
 
 // TelegramTdlibConfig is for :tdlib: subtree

config_schema.json

@@ -21,6 +21,12 @@
             },
             ":upload": {
               "type": "string"
+            },
+            ":user": {
+              "type": "string"
+            },
+            ":quota": {
+              "type": "string"
             }
           }
         },

go.mod

@@ -1,10 +1,11 @@
 module dev.narayana.im/narayana/telegabber
 
-go 1.13
+go 1.19
 
 require (
-	github.com/Arman92/go-tdlib v0.0.0-20191002071913-526f4e1d15f7
+	github.com/dgraph-io/badger/v4 v4.1.0
-	github.com/pkg/errors v0.8.1
+	github.com/google/uuid v1.1.1
+	github.com/pkg/errors v0.9.1
 	github.com/santhosh-tekuri/jsonschema v1.2.4
 	github.com/sirupsen/logrus v1.4.2
 	github.com/soheilhy/args v0.0.0-20150720134047-6bcf4c78e87e
@@ -13,4 +14,25 @@ require (
 	gosrc.io/xmpp v0.5.2-0.20211214110136-5f99e1cd06e1
 )
 
-replace gosrc.io/xmpp => dev.narayana.im/narayana/go-xmpp v0.0.0-20211218155535-e55463fc9829
+require (
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/dgraph-io/ristretto v0.1.1 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
+	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
+	github.com/golang/protobuf v1.3.2 // indirect
+	github.com/golang/snappy v0.0.3 // indirect
+	github.com/google/flatbuffers v1.12.1 // indirect
+	github.com/klauspost/compress v1.12.3 // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
+	go.opencensus.io v0.22.5 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	nhooyr.io/websocket v1.6.5 // indirect
+)
+
+replace gosrc.io/xmpp => dev.narayana.im/narayana/go-xmpp v0.0.0-20240512132113-6725c3862314
+
+replace github.com/zelenin/go-tdlib => dev.narayana.im/narayana/go-tdlib v0.0.0-20240124222245-b4c12addb061

go.sum

@@ -1,32 +1,39 @@
-dev.narayana.im/narayana/go-xmpp v0.0.0-20211218155535-e55463fc9829 h1:qe81G6+t1V1ySRMa7lSu5CayN5aP5GEiHXL2DYwHzuA=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-dev.narayana.im/narayana/go-xmpp v0.0.0-20211218155535-e55463fc9829/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20230730021136-47da33180615 h1:RRUZJSro+k8FkazNx7QEYLVoO4wZtchvsd0Y2RBWjeU=
-github.com/Arman92/go-tdlib v0.0.0-20191002071913-526f4e1d15f7 h1:GbV1Lv3lVHsSeKAqPTBem72OCsGjXntW4jfJdXciE+w=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20230730021136-47da33180615/go.mod h1:Xs8fXbk5n7VaPyrSs9DP7QYoBScWYsjX+lUcWmx1DIU=
-github.com/Arman92/go-tdlib v0.0.0-20191002071913-526f4e1d15f7/go.mod h1:ZzkRfuaFj8etIYMj/ECtXtgfz72RE6U+dos27b3XIwk=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20231111182840-bc2f985e6268 h1:NCbc2bYuUGQsb/3z5SCIia3N34Ktwq3FwaUAfgF/WEU=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20231111182840-bc2f985e6268/go.mod h1:Xs8fXbk5n7VaPyrSs9DP7QYoBScWYsjX+lUcWmx1DIU=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20240124222245-b4c12addb061 h1:CWAQT74LwQne/3Po5KXDvudu3N0FBWm3XZZZhtl5j2w=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20240124222245-b4c12addb061/go.mod h1:Xs8fXbk5n7VaPyrSs9DP7QYoBScWYsjX+lUcWmx1DIU=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20220524203317-306b4ff58e8f h1:6249ajbMjgYz53Oq0IjTvjHXbxTfu29Mj1J/6swRHs4=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20220524203317-306b4ff58e8f/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240131013505-18c46e6c59fd h1:+UW+E7JjI88aH4beDn1cw6D8rs1I061hN91HU4Y4pT8=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240131013505-18c46e6c59fd/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240512132113-6725c3862314 h1:29/NjOGOUDceO73Hk4Nj4uVa1je8MULJlsDSvKxSN/k=
+dev.narayana.im/narayana/go-xmpp v0.0.0-20240512132113-6725c3862314/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/agnivade/wasmbrowsertest v0.3.1/go.mod h1:zQt6ZTdl338xxRaMW395qccVE2eQm0SjC/SDz0mPWQI=
-github.com/bodqhrohro/go-tdlib v0.1.1 h1:lmHognymABxP3cmHkfAGhGnWaJaZ3htpJ7RSbZacin4=
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@@ -70,8 +95,9 @@ github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
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+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
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@@ -134,12 +207,9 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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-gosrc.io/xmpp v0.1.3 h1:VYP1bA35irlQ1ZAJqNhJOz8NSsSTkzQRhREfmuG1H80=
-gosrc.io/xmpp v0.1.3/go.mod h1:fWixaMaFvx8cxXcJVJ5kU9csMeD/JN8on7ybassU8rY=
-gosrc.io/xmpp v0.5.2-0.20211214110136-5f99e1cd06e1 h1:E3uJqX6ImJL9AFdjGbiW04jq8IQ+NcOK+JSiWq2TbRw=
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+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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 nhooyr.io/websocket v1.6.5/go.mod h1:F259lAzPRAH0htX2y3ehpJe09ih1aSHN7udWki1defY=

persistence/sessions.go

@@ -3,6 +3,7 @@ package persistence
 import (
 	"github.com/pkg/errors"
 	"io/ioutil"
+	"sync"
 	"time"
 
 	"dev.narayana.im/narayana/telegabber/yamldb"
@@ -34,29 +35,57 @@ type SessionsMap struct {
 
 // Session is a key-values subtree
 type Session struct {
-	Login       string `yaml:":login"`
+	Login           string         `yaml:":login"`
-	Timezone    string `yaml:":timezone"`
+	Timezone        string         `yaml:":timezone"`
-	KeepOnline  bool   `yaml:":keeponline"`
+	KeepOnline      bool           `yaml:":keeponline"`
-	RawMessages bool   `yaml:":rawmessages"`
+	RawMessages     bool           `yaml:":rawmessages"`
-	AsciiArrows bool   `yaml:":asciiarrows"`
+	AsciiArrows     bool           `yaml:":asciiarrows"`
+	OOBMode         bool           `yaml:":oobmode"`
+	Carbons         bool           `yaml:":carbons"`
+	HideIds         bool           `yaml:":hideids"`
+	Receipts        bool           `yaml:":receipts"`
+	NativeEdits     bool           `yaml:":nativeedits"`
+	IgnoredChats    []int64        `yaml:":ignoredchats"`
+	ignoredChatsMap map[int64]bool `yaml:"-"`
+
+	IgnoreGroupDeletions bool `yaml:":ignoregroupdeletions"`
 }
 
-var configKeys = []string{
+const (
+	PropertyTypeUnknown byte = iota
+	PropertyTypeString
+	PropertyTypeBool
+)
+
+var ConfigKeys = []string{
 	"timezone",
 	"keeponline",
 	"rawmessages",
 	"asciiarrows",
+	"oobmode",
+	"carbons",
+	"hideids",
+	"receipts",
+	"nativeedits",
+	"ignoregroupdeletions",
 }
 
 var sessionDB *SessionsYamlDB
+var sessionsLock sync.Mutex
 
 // SessionMarshaller implementation for YamlDB
 func SessionMarshaller() ([]byte, error) {
 	cleanedMap := SessionsMap{}
 	emptySessionsMap(&cleanedMap)
 
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
 	for jid, session := range sessionDB.Data.Sessions {
 		if session.Login != "" {
+			session.IgnoredChats = make([]int64, 0, len(session.ignoredChatsMap))
+			for chatID := range session.ignoredChatsMap {
+				session.IgnoredChats = append(session.IgnoredChats, chatID)
+			}
 			cleanedMap.Sessions[jid] = session
 		}
 	}
@@ -98,6 +127,16 @@ func initYamlDB(path string, dataPtr *SessionsMap) (*SessionsYamlDB, error) {
 		emptySessionsMap(dataPtr)
 	}
 
+	// convert ignored users slice to map
+	for jid, session := range dataPtr.Sessions {
+		session.ignoredChatsMap = make(map[int64]bool)
+		for _, chatID := range session.IgnoredChats {
+			session.ignoredChatsMap[chatID] = true
+		}
+		session.IgnoredChats = nil
+		dataPtr.Sessions[jid] = session
+	}
+
 	return &SessionsYamlDB{
 		YamlDB: yamldb.YamlDB{
 			Path:    path,
@@ -109,6 +148,13 @@ func initYamlDB(path string, dataPtr *SessionsMap) (*SessionsYamlDB, error) {
 
 // Get retrieves a session value
 func (s *Session) Get(key string) (string, error) {
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
+
+	return s.get(key)
+}
+
+func (s *Session) get(key string) (string, error) {
 	switch key {
 	case "timezone":
 		return s.Timezone, nil
@@ -118,6 +164,18 @@ func (s *Session) Get(key string) (string, error) {
 		return fromBool(s.RawMessages), nil
 	case "asciiarrows":
 		return fromBool(s.AsciiArrows), nil
+	case "oobmode":
+		return fromBool(s.OOBMode), nil
+	case "carbons":
+		return fromBool(s.Carbons), nil
+	case "hideids":
+		return fromBool(s.HideIds), nil
+	case "receipts":
+		return fromBool(s.Receipts), nil
+	case "nativeedits":
+		return fromBool(s.NativeEdits), nil
+	case "ignoregroupdeletions":
+		return fromBool(s.IgnoreGroupDeletions), nil
 	}
 
 	return "", errors.New("Unknown session property")
@@ -125,9 +183,12 @@ func (s *Session) Get(key string) (string, error) {
 
 // ToMap converts the session to a map
 func (s *Session) ToMap() map[string]string {
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
+
 	m := make(map[string]string)
-	for _, configKey := range configKeys {
+	for _, configKey := range ConfigKeys {
-		value, _ := s.Get(configKey)
+		value, _ := s.get(configKey)
 		m[configKey] = value
 	}
 
@@ -136,6 +197,9 @@ func (s *Session) ToMap() map[string]string {
 
 // Set sets a session value
 func (s *Session) Set(key string, value string) (string, error) {
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
+
 	switch key {
 	case "timezone":
 		s.Timezone = value
@@ -161,11 +225,65 @@ func (s *Session) Set(key string, value string) (string, error) {
 		}
 		s.AsciiArrows = b
 		return value, nil
+	case "oobmode":
+		b, err := toBool(value)
+		if err != nil {
+			return "", err
+		}
+		s.OOBMode = b
+		return value, nil
+	case "carbons":
+		b, err := toBool(value)
+		if err != nil {
+			return "", err
+		}
+		s.Carbons = b
+		return value, nil
+	case "hideids":
+		b, err := toBool(value)
+		if err != nil {
+			return "", err
+		}
+		s.HideIds = b
+		return value, nil
+	case "receipts":
+		b, err := toBool(value)
+		if err != nil {
+			return "", err
+		}
+		s.Receipts = b
+		return value, nil
+	case "nativeedits":
+		b, err := toBool(value)
+		if err != nil {
+			return "", err
+		}
+		s.NativeEdits = b
+		return value, nil
+	case "ignoregroupdeletions":
+		b, err := toBool(value)
+		if err != nil {
+			return "", err
+		}
+		s.IgnoreGroupDeletions = b
+		return value, nil
 	}
 
 	return "", errors.New("Unknown session property")
 }
 
+// PropertyType determines the property type
+func PropertyType(key string) byte {
+	switch key {
+	case "timezone":
+		return PropertyTypeString
+	case "keeponline", "rawmessages", "asciiarrows", "oobmode", "carbons", "hideids",
+		"receipts", "nativeedits", "ignoregroupdeletions":
+		return PropertyTypeBool
+	}
+	return PropertyTypeUnknown
+}
+
 // TimezoneToLocation tries to convert config timezone to location
 func (s *Session) TimezoneToLocation() *time.Location {
 	time, err := time.Parse("-07:00", s.Timezone)
@@ -177,6 +295,51 @@ func (s *Session) TimezoneToLocation() *time.Location {
 	return zeroLocation
 }
 
+// IgnoreChat adds a chat id to ignore list, returns false if already ignored
+func (s *Session) IgnoreChat(chatID int64) bool {
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
+
+	if s.ignoredChatsMap == nil {
+		s.ignoredChatsMap = make(map[int64]bool)
+	} else if _, ok := s.ignoredChatsMap[chatID]; ok {
+		return false
+	}
+
+	s.ignoredChatsMap[chatID] = true
+	return true
+}
+
+// UnignoreChat removes a chat id from ignore list, returns false if not already ignored
+func (s *Session) UnignoreChat(chatID int64) bool {
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
+
+	if s.ignoredChatsMap == nil {
+		return false
+	}
+
+	if _, ok := s.ignoredChatsMap[chatID]; !ok {
+		return false
+	}
+
+	delete(s.ignoredChatsMap, chatID)
+	return true
+}
+
+// IsChatIgnored checks the chat id against the ignore list
+func (s *Session) IsChatIgnored(chatID int64) bool {
+	sessionsLock.Lock()
+	defer sessionsLock.Unlock()
+
+	if s.ignoredChatsMap == nil {
+		return false
+	}
+
+	_, ok := s.ignoredChatsMap[chatID]
+	return ok
+}
+
 func fromBool(b bool) string {
 	if b {
 		return "true"

persistence/sessions_test.go

@@ -47,6 +47,8 @@ func TestSessionToMap(t *testing.T) {
 	session := Session{
 		Timezone:    "klsf",
 		RawMessages: true,
+		OOBMode:     true,
+		Receipts:    true,
 	}
 	m := session.ToMap()
 	sample := map[string]string{
@@ -54,6 +56,11 @@ func TestSessionToMap(t *testing.T) {
 		"keeponline":  "false",
 		"rawmessages": "true",
 		"asciiarrows": "false",
+		"oobmode":     "true",
+		"carbons":     "false",
+		"hideids":     "false",
+		"receipts":    "true",
+		"nativeedits": "false",
 	}
 	if !reflect.DeepEqual(m, sample) {
 		t.Errorf("Map does not match the sample: %v", m)
@@ -81,3 +88,31 @@ func TestSessionSetAbsent(t *testing.T) {
 		t.Error("There shouldn't come a donkey!")
 	}
 }
+
+func TestSessionIgnore(t *testing.T) {
+	session := Session{}
+	if session.IsChatIgnored(3) {
+		t.Error("Shouldn't be ignored yet")
+	}
+	if !session.IgnoreChat(3) {
+		t.Error("Shouldn't have been ignored")
+	}
+	if session.IgnoreChat(3) {
+		t.Error("Shouldn't ignore second time")
+	}
+	if !session.IsChatIgnored(3) {
+		t.Error("Should be ignored already")
+	}
+	if session.IsChatIgnored(-145) {
+		t.Error("Wrong chat is ignored")
+	}
+	if !session.UnignoreChat(3) {
+		t.Error("Should successfully unignore")
+	}
+	if session.UnignoreChat(3) {
+		t.Error("Should unignore second time")
+	}
+	if session.IsChatIgnored(3) {
+		t.Error("Shouldn't be ignored already")
+	}
+}

staging.Dockerfile

@@ -0,0 +1,46 @@
+FROM golang:1.19-bullseye AS base
+
+RUN apt-get update
+RUN apt-get install -y libssl-dev cmake build-essential gperf libz-dev make git php
+
+FROM base AS tdlib
+
+ARG TD_COMMIT
+ARG MAKEOPTS
+RUN git clone https://github.com/tdlib/td /src/
+RUN git -C /src/ checkout "${TD_COMMIT}"
+RUN mkdir build
+WORKDIR /build/
+RUN cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/compiled/ /src/
+RUN cmake --build . --target prepare_cross_compiling ${MAKEOPTS}
+WORKDIR /src/
+RUN php SplitSource.php
+WORKDIR /build/
+RUN cmake --build . ${MAKEOPTS}
+RUN make install
+
+FROM base AS cache
+ARG VERSION
+COPY --from=tdlib /compiled/ /usr/local/
+WORKDIR /src
+RUN go env -w GOCACHE=/go-cache
+RUN go env -w GOMODCACHE=/gomod-cache
+RUN --mount=type=cache,target=/gomod-cache \
+    --mount=type=bind,source=./,target=/src,rw \
+    /bin/bash -c 'go mod tidy; go get -t'
+
+FROM cache AS build
+ARG MAKEOPTS
+WORKDIR /src
+RUN --mount=type=bind,source=./,target=/src,rw \
+    --mount=type=cache,target=/go-cache \
+    --mount=type=cache,target=/gomod-cache \
+    --mount=type=cache,destination=/src/release \
+    make ${MAKEOPTS}
+
+FROM build AS release
+RUN --mount=type=cache,destination=/src/release \
+    cp /src/release/telegabber /
+
+FROM scratch AS binaries
+COPY --from=release /telegabber /

tdlib.Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.19-bullseye AS base
+
+RUN apt-get update
+RUN apt-get install -y libssl-dev cmake build-essential gperf libz-dev make git php
+
+FROM base AS tdlib
+
+ARG TD_COMMIT
+ARG MAKEOPTS
+RUN git clone https://github.com/tdlib/td /src/
+RUN git -C /src/ checkout "${TD_COMMIT}"
+RUN mkdir build
+WORKDIR /build/
+RUN cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/compiled/ /src/
+RUN cmake --build . --target prepare_cross_compiling ${MAKEOPTS}
+WORKDIR /src/
+RUN php SplitSource.php
+WORKDIR /build/
+RUN cmake --build . ${MAKEOPTS}
+RUN make install
+
+FROM scratch AS binaries
+COPY --from=tdlib /compiled/ /

telegabber.go

@@ -12,9 +12,13 @@ import (
 	"dev.narayana.im/narayana/telegabber/xmpp"
 
 	log "github.com/sirupsen/logrus"
+	"github.com/zelenin/go-tdlib/client"
 	goxmpp "gosrc.io/xmpp"
 )
 
+var version string = "1.12.8"
+var commit string
+
 var sm *goxmpp.StreamManager
 var component *goxmpp.Component
 var err error
@@ -23,13 +27,25 @@ var cleanupDone chan struct{}
 var sigintChannel chan os.Signal
 
 func main() {
+	if commit != "" {
+		version = fmt.Sprintf("%v-%v", version, commit)
+	}
+
 	var profilingPort = flag.Int("profiling-port", 0, "The port for pprof server")
 	// YAML config, compatible with the format of Zhabogram 2.0.0
 	var configPath = flag.String("config", "config.yml", "Config file path")
 	// JSON schema (not for editing by a user)
 	var schemaPath = flag.String("schema", "./config_schema.json", "Schema file path")
+	// Folder for Badger DB of message ids
+	var idsPath = flag.String("ids", "ids", "Ids folder path")
+	var versionFlag = flag.Bool("version", false, "Print the version and exit")
 	flag.Parse()
 
+	if *versionFlag {
+		fmt.Printf("%v\n", version)
+		os.Exit(0)
+	}
+
 	if *profilingPort > 0 {
 		go func() {
 			log.Println(http.ListenAndServe(fmt.Sprintf("localhost:%v", *profilingPort), nil))
@@ -45,9 +61,14 @@ func main() {
 		log.Fatal(err)
 	}
 
+	client.SetLogVerbosityLevel(&client.SetLogVerbosityLevelRequest{
+		NewVerbosityLevel: stringToTdlibLogConstant(config.Telegram.Loglevel),
+	})
 	SetLogrusLevel(config.XMPP.Loglevel)
 
-	sm, component, err = xmpp.NewComponent(config.XMPP, config.Telegram)
+	log.Infof("Starting telegabber version %v", version)
+
+	sm, component, err = xmpp.NewComponent(config.XMPP, config.Telegram, *idsPath, version)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -72,6 +93,25 @@ func main() {
 	}
 }
 
+var tdlibLogConstants = map[string]int32{
+	":fatal":   0,
+	":error":   1,
+	":warn":    2,
+	":info":    3,
+	":debug":   4,
+	":verbose": 5,
+	":all":     1023,
+}
+
+func stringToTdlibLogConstant(c string) int32 {
+	level, ok := tdlibLogConstants[c]
+	if !ok {
+		level = 0
+	}
+
+	return level
+}
+
 func exit() {
 	xmpp.Close(component)
 	close(cleanupDone)

telegabber_test.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestTdlibLogInfo(t *testing.T) {
+	tdlibConstant := stringToTdlibLogConstant(":info")
+	if tdlibConstant != 3 {
+		t.Errorf("Wrong TDlib constant for info")
+	}
+}
+
+func TestTdlibLogInvalid(t *testing.T) {
+	tdlibConstant := stringToTdlibLogConstant("ziz")
+	if tdlibConstant != 0 {
+		t.Errorf("Unknown strings should return fatal loglevel")
+	}
+}

telegram/cache/cache.go

@@ -16,7 +16,8 @@ type Status struct {
 // Cache allows operating the chats and users cache in
 // a thread-safe manner
 type Cache struct {
-	chats        map[int64]*client.Chat
+	ownChats     map[int64]*client.Chat
+	auxChats     map[int64]*client.Chat
 	users        map[int64]*client.User
 	statuses     map[int64]*Status
 	chatsLock    sync.Mutex
@@ -27,7 +28,8 @@ type Cache struct {
 // NewCache initializes a cache
 func NewCache() *Cache {
 	return &Cache{
-		chats:    map[int64]*client.Chat{},
+		ownChats: map[int64]*client.Chat{},
+		auxChats: map[int64]*client.Chat{},
 		users:    map[int64]*client.User{},
 		statuses: map[int64]*Status{},
 	}
@@ -40,7 +42,23 @@ func (cache *Cache) ChatsKeys() []int64 {
 	defer cache.chatsLock.Unlock()
 
 	var keys []int64
-	for id := range cache.chats {
+	for id := range cache.ownChats {
+		keys = append(keys, id)
+	}
+	for id := range cache.auxChats {
+		keys = append(keys, id)
+	}
+	return keys
+}
+
+// OwnChatsKeys grabs only own chat ids synchronously to avoid lockups
+// while they are used
+func (cache *Cache) OwnChatsKeys() []int64 {
+	cache.chatsLock.Lock()
+	defer cache.chatsLock.Unlock()
+
+	var keys []int64
+	for id := range cache.ownChats {
 		keys = append(keys, id)
 	}
 	return keys
@@ -84,7 +102,10 @@ func (cache *Cache) GetChat(id int64) (*client.Chat, bool) {
 	cache.chatsLock.Lock()
 	defer cache.chatsLock.Unlock()
 
-	chat, ok := cache.chats[id]
+	chat, ok := cache.ownChats[id]
+	if !ok {
+		chat, ok = cache.auxChats[id]
+	}
 	return chat, ok
 }
 
@@ -107,11 +128,21 @@ func (cache *Cache) GetStatus(id int64) (*Status, bool) {
 }
 
 // SetChat stores a chat in the cache
-func (cache *Cache) SetChat(id int64, chat *client.Chat) {
+func (cache *Cache) SetChat(id int64, chat *client.Chat, own bool) {
 	cache.chatsLock.Lock()
 	defer cache.chatsLock.Unlock()
 
-	cache.chats[id] = chat
+	if own {
+		cache.ownChats[id] = chat
+		// move from aux to own, but not vice versa
+		// (own: true means that presences for the chat are needed
+		// for sure, false means just "not necessarily")
+		if _, ok := cache.auxChats[id]; ok {
+			delete(cache.auxChats, id)
+		}
+	} else {
+		cache.auxChats[id] = chat
+	}
 }
 
 // SetUser stores a user in the cache
@@ -133,3 +164,13 @@ func (cache *Cache) SetStatus(id int64, show string, status string) {
 		Description: status,
 	}
 }
+
+// Destruct splits a cached status into show, description and type
+func (status *Status) Destruct() (show, description, typ string) {
+	show, description = status.XMPP, status.Description
+	if show == "unavailable" {
+		typ = show
+		show = ""
+	}
+	return
+}

telegram/client.go

@@ -15,40 +15,61 @@ import (
 	"gosrc.io/xmpp"
 )
 
-var logConstants = map[string]int32{
-	":fatal":   0,
-	":error":   1,
-	":warn":    2,
-	":info":    3,
-	":debug":   4,
-	":verbose": 5,
-	":all":     1023,
-}
-
-func stringToLogConstant(c string) int32 {
-	level, ok := logConstants[c]
-	if !ok {
-		level = 0
-	}
-
-	return level
-}
-
 // DelayedStatus describes an online status expiring on timeout
 type DelayedStatus struct {
 	TimestampOnline  int64
 	TimestampExpired int64
 }
 
+// HashedAvatar stores a SHA-1 hash and a Telegram file ID
+type HashedAvatar struct {
+	Hash string
+	File int32
+}
+
+// NewId stores message ids and timestamps of their additions so old ones can be truncated to save memory
+type newId struct {
+	Id      int64
+	Ts      int64
+	lock    sync.Mutex
+	ownLock sync.Mutex
+	locked  bool
+	fired   bool
+}
+
+func newNewId() *newId {
+	return &newId{Ts: time.Now().Unix()}
+}
+
+func (i *newId) Lock() {
+	i.ownLock.Lock()
+	if i.fired {
+		i.ownLock.Unlock()
+		return
+	}
+	i.locked = true
+	i.ownLock.Unlock()
+	i.lock.Lock()
+}
+
+func (i *newId) Unlock() {
+	i.ownLock.Lock()
+	if i.locked {
+		i.lock.Unlock()
+		i.locked = false
+		i.fired = true
+	}
+	i.ownLock.Unlock()
+}
+
 // Client stores the metadata for lazily invoked TDlib instance
 type Client struct {
 	client     *client.Client
 	authorizer *clientAuthorizer
-	parameters *client.TdlibParameters
+	parameters *client.SetTdlibParametersRequest
 	options    []client.Option
 	me         *client.User
 
-	resource  string
 	xmpp      *xmpp.Component
 	jid       string
 	Session   *persistence.Session
@@ -57,26 +78,60 @@ type Client struct {
 	cache     *cache.Cache
 	online    bool
 
+	loginWizard *loginWizardMetadata
+
+	lastAuthorizationStateType string
+
+	outbox     map[string]string
+	editOutbox map[string]string
+
 	DelayedStatuses     map[int64]*DelayedStatus
 	DelayedStatusesLock sync.Mutex
 
-	locks clientLocks
+	lastMsgHashes map[int64]uint64
+	lastMsgIds    map[int64]string
+
+	LastBotCmdString string
+
+	XmppClientFeatures     map[string]*[]string
+	XmppClientFeaturesLock sync.Mutex
+
+	AvatarHashes     map[int64]*HashedAvatar
+	AvatarHashesLock sync.Mutex
+
+	MessageIdChanges     map[int64]map[int64]*newId
+	MessageIdChangesLock sync.Mutex
+
+	locks           clientLocks
+	SendMessageLock sync.Mutex
 }
 
 type clientLocks struct {
-	authorizationReady sync.WaitGroup
+	authorizationReady sync.Mutex
 	chatMessageLocks   map[int64]*sync.Mutex
 	resourcesLock      sync.Mutex
+	outboxLock         sync.Mutex
+	editOutboxLock     sync.Mutex
+	lastMsgHashesLock  sync.Mutex
+	lastMsgIdsLock     sync.RWMutex
+
+	authorizerReadLock  sync.Mutex
+	authorizerWriteLock sync.Mutex
+
+	loginWizardReadLock  sync.Mutex
+	loginWizardWriteLock sync.Mutex
+}
+
+type loginWizardMetadata struct {
+	nextStage   chan string
+	chanBusy    bool
+	commandSent bool
 }
 
 // NewClient instantiates a Telegram App
 func NewClient(conf config.TelegramConfig, jid string, component *xmpp.Component, session *persistence.Session) (*Client, error) {
 	var options []client.Option
 
-	options = append(options, client.WithLogVerbosity(&client.SetLogVerbosityLevelRequest{
-		NewVerbosityLevel: stringToLogConstant(conf.Loglevel),
-	}))
-
 	if conf.Tdlib.Client.CatchTimeout != 0 {
 		options = append(options, client.WithCatchTimeout(
 			time.Duration(conf.Tdlib.Client.CatchTimeout)*time.Second,
@@ -93,7 +148,7 @@ func NewClient(conf config.TelegramConfig, jid string, component *xmpp.Component
 		datadir = "./sessions/" // ye olde defaute
 	}
 
-	parameters := client.TdlibParameters{
+	parameters := client.SetTdlibParametersRequest{
 		UseTestDc: false,
 
 		DatabaseDirectory: filepath.Join(datadir, jid),
@@ -116,22 +171,23 @@ func NewClient(conf config.TelegramConfig, jid string, component *xmpp.Component
 		IgnoreFileNames:        false,
 	}
 
-	resource := conf.Tdlib.Client.DeviceModel
-	if resource == "" {
-		resource = "telegabber"
-	}
-
 	return &Client{
-		parameters:      &parameters,
+		parameters:         &parameters,
-		resource:        resource,
+		xmpp:               component,
-		xmpp:            component,
+		jid:                jid,
-		jid:             jid,
+		Session:            session,
-		Session:         session,
+		resources:          make(map[string]bool),
-		resources:       make(map[string]bool),
+		content:            &conf.Content,
-		content:         &conf.Content,
+		cache:              cache.NewCache(),
-		cache:           cache.NewCache(),
+		outbox:             make(map[string]string),
-		options:         options,
+		editOutbox:         make(map[string]string),
-		DelayedStatuses: make(map[int64]*DelayedStatus),
+		options:            options,
+		DelayedStatuses:    make(map[int64]*DelayedStatus),
+		lastMsgHashes:      make(map[int64]uint64),
+		lastMsgIds:         make(map[int64]string),
+		XmppClientFeatures: make(map[string]*[]string),
+		AvatarHashes:       make(map[int64]*HashedAvatar),
+		MessageIdChanges:   make(map[int64]map[int64]*newId),
 		locks: clientLocks{
 			chatMessageLocks: make(map[int64]*sync.Mutex),
 		},

telegram/client_test.go

@@ -1,19 +0,0 @@
-package telegram
-
-import (
-	"testing"
-)
-
-func TestLogInfo(t *testing.T) {
-	tdlibConstant := stringToLogConstant(":info")
-	if tdlibConstant != 3 {
-		t.Errorf("Wrong TDlib constant for info")
-	}
-}
-
-func TestLogInvalid(t *testing.T) {
-	tdlibConstant := stringToLogConstant("ziz")
-	if tdlibConstant != 0 {
-		t.Errorf("Unknown strings should return fatal loglevel")
-	}
-}

telegram/connect.go

@@ -2,7 +2,7 @@ package telegram
 
 import (
 	"github.com/pkg/errors"
-	"strconv"
+	"time"
 
 	"dev.narayana.im/narayana/telegabber/xmpp/gateway"
 
@@ -13,25 +13,25 @@ import (
 const chatsLimit int32 = 999
 
 type clientAuthorizer struct {
-	TdlibParameters chan *client.TdlibParameters
+	TdlibParameters chan *client.SetTdlibParametersRequest
 	PhoneNumber     chan string
 	Code            chan string
 	State           chan client.AuthorizationState
 	Password        chan string
+	FirstName       chan string
+	LastName        chan string
+	isClosed        bool
 }
 
 func (stateHandler *clientAuthorizer) Handle(c *client.Client, state client.AuthorizationState) error {
+	if stateHandler.isClosed {
+		return errors.New("Channel is closed")
+	}
 	stateHandler.State <- state
 
 	switch state.AuthorizationStateType() {
 	case client.TypeAuthorizationStateWaitTdlibParameters:
-		_, err := c.SetTdlibParameters(&client.SetTdlibParametersRequest{
+		_, err := c.SetTdlibParameters(<-stateHandler.TdlibParameters)
-			Parameters: <-stateHandler.TdlibParameters,
-		})
-		return err
-
-	case client.TypeAuthorizationStateWaitEncryptionKey:
-		_, err := c.CheckDatabaseEncryptionKey(&client.CheckDatabaseEncryptionKeyRequest{})
 		return err
 
 	case client.TypeAuthorizationStateWaitPhoneNumber:
@@ -52,7 +52,11 @@ func (stateHandler *clientAuthorizer) Handle(c *client.Client, state client.Auth
 		return err
 
 	case client.TypeAuthorizationStateWaitRegistration:
-		return client.ErrNotSupportedAuthorizationState
+		_, err := c.RegisterUser(&client.RegisterUserRequest{
+			FirstName: <-stateHandler.FirstName,
+			LastName:  <-stateHandler.LastName,
+		})
+		return err
 
 	case client.TypeAuthorizationStateWaitPassword:
 		_, err := c.CheckAuthenticationPassword(&client.CheckAuthenticationPasswordRequest{
@@ -64,10 +68,10 @@ func (stateHandler *clientAuthorizer) Handle(c *client.Client, state client.Auth
 		return nil
 
 	case client.TypeAuthorizationStateLoggingOut:
-		return client.ErrNotSupportedAuthorizationState
+		return nil
 
 	case client.TypeAuthorizationStateClosing:
-		return client.ErrNotSupportedAuthorizationState
+		return nil
 
 	case client.TypeAuthorizationStateClosed:
 		return client.ErrNotSupportedAuthorizationState
@@ -77,41 +81,55 @@ func (stateHandler *clientAuthorizer) Handle(c *client.Client, state client.Auth
 }
 
 func (stateHandler *clientAuthorizer) Close() {
+	if stateHandler.isClosed {
+		return
+	}
+	stateHandler.isClosed = true
 	close(stateHandler.TdlibParameters)
 	close(stateHandler.PhoneNumber)
 	close(stateHandler.Code)
 	close(stateHandler.State)
 	close(stateHandler.Password)
+	close(stateHandler.FirstName)
+	close(stateHandler.LastName)
 }
 
 // Connect starts TDlib connection
 func (c *Client) Connect(resource string) error {
+	log.Warn("Attempting to connect to Telegram network...")
+
 	// avoid conflict if another authorization is pending already
-	c.locks.authorizationReady.Wait()
+	c.locks.authorizationReady.Lock()
 
 	if c.Online() {
 		c.roster(resource)
+		c.locks.authorizationReady.Unlock()
 		return nil
 	}
 
 	log.Warn("Connecting to Telegram network...")
 
+	c.locks.authorizerWriteLock.Lock()
 	c.authorizer = &clientAuthorizer{
-		TdlibParameters: make(chan *client.TdlibParameters, 1),
+		TdlibParameters: make(chan *client.SetTdlibParametersRequest, 1),
 		PhoneNumber:     make(chan string, 1),
 		Code:            make(chan string, 1),
 		State:           make(chan client.AuthorizationState, 10),
 		Password:        make(chan string, 1),
+		FirstName:       make(chan string, 1),
+		LastName:        make(chan string, 1),
 	}
 
-	c.locks.authorizationReady.Add(1)
-
 	go c.interactor()
+	log.Warn("Interactor launched")
 
 	c.authorizer.TdlibParameters <- c.parameters
+	c.locks.authorizerWriteLock.Unlock()
 
 	tdlibClient, err := client.NewClient(c.authorizer, c.options...)
 	if err != nil {
+		c.locks.authorizationReady.Unlock()
+		c.wizardStageOrPrompt("cancel", "")
 		return errors.Wrap(err, "Couldn't initialize a Telegram client instance")
 	}
 
@@ -120,6 +138,8 @@ func (c *Client) Connect(resource string) error {
 	// stage 3: if a client is succesfully created, AuthorizationStateReady is already reached
 	log.Warn("Authorization successful!")
 
+	c.wizardStageOrPrompt("success", "")
+
 	c.me, err = c.client.GetMe()
 	if err != nil {
 		log.Error("Could not retrieve me info")
@@ -129,25 +149,68 @@ func (c *Client) Connect(resource string) error {
 
 	go c.updateHandler()
 	c.online = true
-	c.locks.authorizationReady.Done()
+	c.locks.authorizationReady.Unlock()
 	c.addResource(resource)
 
 	go func() {
-		_, err = c.client.GetChats(&client.GetChatsRequest{
+		chats, err := c.client.GetChats(&client.GetChatsRequest{
 			Limit: chatsLimit,
 		})
 		if err != nil {
 			log.Errorf("Could not retrieve chats: %v", err)
+		} else {
+			log.Infof("Obtained ≈%v chats for initialization", chats.TotalCount)
 		}
 
-		gateway.SendPresence(c.xmpp, c.jid, gateway.SPType("subscribe"))
+		gateway.SubscribeToTransport(c.xmpp, c.jid)
-		gateway.SendPresence(c.xmpp, c.jid, gateway.SPType("subscribed"))
+		c.sendPresence(gateway.SPStatus("Logged in as: " + c.Session.Login))
-		gateway.SendPresence(c.xmpp, c.jid, gateway.SPStatus("Logged in as: "+c.Session.Login))
 	}()
 
 	return nil
 }
 
+func (c *Client) TryLogin(resource string, login string) error {
+	wasSessionLoginEmpty := c.Session.Login == ""
+	c.Session.Login = login
+
+	if wasSessionLoginEmpty && c.authorizer == nil {
+		go func() {
+			err := c.Connect(resource)
+			if err != nil {
+				log.Error(errors.Wrap(err, "TDlib connection failure"))
+			}
+		}()
+		// a quirk for authorizer to become ready. If it's still not,
+		// nothing bad: just re-login again
+		time.Sleep(1e5)
+	}
+
+	c.locks.authorizerWriteLock.Lock()
+	defer c.locks.authorizerWriteLock.Unlock()
+
+	if c.authorizer == nil {
+		return errors.New(TelegramNotInitialized)
+	}
+
+	if c.authorizer.isClosed {
+		return errors.New(TelegramAuthDone)
+	}
+
+	return nil
+}
+
+func (c *Client) SetPhoneNumber(login string) error {
+	c.locks.authorizerWriteLock.Lock()
+	defer c.locks.authorizerWriteLock.Unlock()
+
+	if c.authorizer == nil || c.authorizer.isClosed {
+		return errors.New("Authorization not needed")
+	}
+
+	c.authorizer.PhoneNumber <- login
+	return nil
+}
+
 // Disconnect drops TDlib connection and
 // returns the flag indicating if disconnecting is permitted
 func (c *Client) Disconnect(resource string, quit bool) bool {
@@ -168,29 +231,28 @@ func (c *Client) Disconnect(resource string, quit bool) bool {
 	log.Warn("Disconnecting from Telegram network...")
 
 	// we're offline (unsubscribe if logout)
-	for _, id := range c.cache.ChatsKeys() {
+	for _, id := range c.cache.OwnChatsKeys() {
-		gateway.SendPresence(
+		args := gateway.SimplePresence(id, "unavailable")
-			c.xmpp,
+		c.sendPresence(args...)
-			c.jid,
-			gateway.SPFrom(strconv.FormatInt(id, 10)),
-			gateway.SPType("unavailable"),
-		)
 	}
 
-	_, err := c.client.Close()
+	c.close()
-	if err != nil {
-		log.Errorf("Couldn't close the Telegram instance: %v; %#v", err, c)
-	}
-	c.forceClose()
 
 	return true
 }
 
 func (c *Client) interactor() {
 	for {
+		c.locks.authorizerReadLock.Lock()
+		if c.authorizer == nil {
+			log.Warn("Authorizer is lost, halting the interactor")
+			c.locks.authorizerReadLock.Unlock()
+			return
+		}
 		state, ok := <-c.authorizer.State
 		if !ok {
 			log.Warn("Interactor is disconnected")
+			c.locks.authorizerReadLock.Unlock()
 			return
 		}
 
@@ -198,6 +260,8 @@ func (c *Client) interactor() {
 		log.Infof("Telegram authorization state: %#v", stateType)
 		log.Debugf("%#v", state)
 
+		c.lastAuthorizationStateType = stateType
+
 		switch stateType {
 		// stage 0: set login
 		case client.TypeAuthorizationStateWaitPhoneNumber:
@@ -205,25 +269,58 @@ func (c *Client) interactor() {
 			if c.Session.Login != "" {
 				c.authorizer.PhoneNumber <- c.Session.Login
 			} else {
-				gateway.SendMessage(c.jid, "", "Please, enter your Telegram login via /login 12345", c.xmpp)
+				c.wizardStageOrPrompt("login", "Please, enter your Telegram login via /login 12345, or use the Login Wizard via Ad-Hoc commands")
 			}
 		// stage 1: wait for auth code
 		case client.TypeAuthorizationStateWaitCode:
 			log.Warn("Waiting for authorization code...")
-			gateway.SendMessage(c.jid, "", "Please, enter authorization code via /code 12345", c.xmpp)
+			c.wizardStageOrPrompt("code", "Please, enter authorization code via /code 12345")
+		// stage 1b: wait for registration
+		case client.TypeAuthorizationStateWaitRegistration:
+			log.Warn("Waiting for full name...")
+			gateway.SendServiceMessage(c.jid, "This number is not registered yet! Please, enter your name via /setname John Doe", c.xmpp)
 		// stage 2: wait for 2fa
 		case client.TypeAuthorizationStateWaitPassword:
 			log.Warn("Waiting for 2FA password...")
-			gateway.SendMessage(c.jid, "", "Please, enter 2FA passphrase via /password 12345", c.xmpp)
+			c.wizardStageOrPrompt("password", "Please, enter 2FA passphrase via /password 12345")
 		}
+		c.locks.authorizerReadLock.Unlock()
 	}
 }
 
 func (c *Client) forceClose() {
+	c.locks.authorizerReadLock.Lock()
+	c.locks.authorizerWriteLock.Lock()
+	defer c.locks.authorizerReadLock.Unlock()
+	defer c.locks.authorizerWriteLock.Unlock()
+
 	c.online = false
 	c.authorizer = nil
 }
 
+func (c *Client) close() {
+	c.locks.authorizerWriteLock.Lock()
+	if c.authorizer != nil && !c.authorizer.isClosed {
+		log.Debug("Closing authorizer")
+		c.authorizer.Close()
+	}
+	c.locks.authorizerWriteLock.Unlock()
+
+	if c.client != nil {
+		_, err := c.client.Close()
+		if err != nil {
+			log.Errorf("Couldn't close the Telegram instance: %v; %#v", err, c)
+		}
+	}
+	c.forceClose()
+}
+
+func (c *Client) cancelAuth() {
+	c.StopLoginWizard()
+	c.close()
+	c.Session.Login = ""
+}
+
 // Online checks if the updates listener is alive
 func (c *Client) Online() bool {
 	return c.online

telegram/formatter/formatter.go

@@ -2,30 +2,56 @@ package formatter
 
 import (
 	"sort"
+	"unicode"
 
 	log "github.com/sirupsen/logrus"
 	"github.com/zelenin/go-tdlib/client"
 )
 
-// Insertion is a piece of text in given position
+type insertionType int
-type Insertion struct {
+
+const (
+	insertionOpening insertionType = iota
+	insertionClosing
+	insertionUnpaired
+)
+
+type MarkupModeType int
+
+const (
+	MarkupModeXEP0393 MarkupModeType = iota
+	MarkupModeMarkdown
+)
+
+// insertion is a piece of text in given position
+type insertion struct {
 	Offset int32
 	Runes  []rune
+	Type   insertionType
 }
 
-// InsertionStack contains the sequence of insertions
+// insertionStack contains the sequence of insertions
 // from the start or from the end
-type InsertionStack []*Insertion
+type insertionStack []*insertion
 
 var boldRunesMarkdown = []rune("**")
 var boldRunesXEP0393 = []rune("*")
 var italicRunes = []rune("_")
-var codeRunes = []rune("\n```\n")
+var strikeRunesMarkdown = []rune("~~")
+var strikeRunesXEP0393 = []rune("~")
+var codeRunes = []rune("`")
+var preRunesStart = []rune("```\n")
+var preRunesEnd = []rune("\n```")
+var quoteRunes = []rune("> ")
+var newlineRunes = []rune("\n")
+var doubleNewlineRunes = []rune("\n\n")
+var newlineCode = rune(0x0000000a)
+var bmpCeil = rune(0x0000ffff)
 
-// rebalance pumps all the values at given offset to current stack (growing
+// rebalance pumps all the values until the given offset to current stack (growing
 // from start) from given stack (growing from end); should be called
 // before any insertions to the current stack at the given offset
-func (s InsertionStack) rebalance(s2 InsertionStack, offset int32) (InsertionStack, InsertionStack) {
+func (s insertionStack) rebalance(s2 insertionStack, offset int32) (insertionStack, insertionStack) {
 	for len(s2) > 0 && s2[len(s2)-1].Offset <= offset {
 		s = append(s, s2[len(s2)-1])
 		s2 = s2[:len(s2)-1]
@@ -36,10 +62,10 @@ func (s InsertionStack) rebalance(s2 InsertionStack, offset int32) (InsertionSta
 
 // NewIterator is a second order function that sequentially scans and returns
 // stack elements; starts returning nil when elements are ended
-func (s InsertionStack) NewIterator() func() *Insertion {
+func (s insertionStack) NewIterator() func() *insertion {
 	i := -1
 
-	return func() *Insertion {
+	return func() *insertion {
 		i++
 		if i < len(s) {
 			return s[i]
@@ -54,8 +80,8 @@ func SortEntities(entities []*client.TextEntity) []*client.TextEntity {
 	copy(sortedEntities, entities)
 
 	sort.Slice(sortedEntities, func(i int, j int) bool {
-		entity1 := entities[i]
+		entity1 := sortedEntities[i]
-		entity2 := entities[j]
+		entity2 := sortedEntities[j]
 		if entity1.Offset < entity2.Offset {
 			return true
 		} else if entity1.Offset == entity2.Offset {
@@ -66,74 +92,271 @@ func SortEntities(entities []*client.TextEntity) []*client.TextEntity {
 	return sortedEntities
 }
 
-func markupBraces(entity *client.TextEntity, lbrace, rbrace []rune) (*Insertion, *Insertion) {
+// MergeAdjacentEntities merges entities of a same kind
-	return &Insertion{
+func MergeAdjacentEntities(entities []*client.TextEntity) []*client.TextEntity {
-			Offset: entity.Offset,
+	mergedEntities := make([]*client.TextEntity, 0, len(entities))
-			Runes:  lbrace,
+	excludedIndices := make(map[int]bool)
-		}, &Insertion{
+
-			Offset: entity.Offset + entity.Length,
+	for i, entity := range entities {
-			Runes:  rbrace,
+		if excludedIndices[i] || entity.Type == nil {
+			continue
 		}
+
+		typ := entity.Type.TextEntityTypeType()
+		start := entity.Offset
+		end := start + entity.Length
+		ei := make(map[int]bool)
+
+		// collect continuations
+		for j, entity2 := range entities[i+1:] {
+			if entity2.Type != nil && entity2.Type.TextEntityTypeType() == typ && entity2.Offset == end {
+				end += entity2.Length
+				ei[j+i+1] = true
+			}
+		}
+
+		// check for intersections with other entities
+		var isIntersecting bool
+		if len(ei) > 0 {
+			for _, entity2 := range entities {
+				entity2End := entity2.Offset + entity2.Length
+				if (entity2.Offset < start && entity2End > start && entity2End < end) ||
+					(entity2.Offset > start && entity2.Offset < end && entity2End > end) {
+					isIntersecting = true
+					break
+				}
+			}
+		}
+
+		if !isIntersecting {
+			entity.Length = end - start
+			for j := range ei {
+				excludedIndices[j] = true
+			}
+		}
+		mergedEntities = append(mergedEntities, entity)
+	}
+
+	return mergedEntities
 }
 
-// EntityToMarkdown generates the wrapping Markdown tags
+// ClaspDirectives to the following span as required by XEP-0393
-func EntityToMarkdown(entity *client.TextEntity) (*Insertion, *Insertion) {
+func ClaspDirectives(doubledRunes []rune, entities []*client.TextEntity) []*client.TextEntity {
+	alignedEntities := make([]*client.TextEntity, len(entities))
+	copy(alignedEntities, entities)
+
+	for i, entity := range alignedEntities {
+		var dirty bool
+		endOffset := entity.Offset + entity.Length
+
+		if unicode.IsSpace(doubledRunes[entity.Offset]) {
+			for j, r := range doubledRunes[entity.Offset+1 : endOffset] {
+				if !unicode.IsSpace(r) {
+					dirty = true
+					entity.Offset += int32(j + 1)
+					entity.Length -= int32(j + 1)
+					break
+				}
+			}
+		}
+		if unicode.IsSpace(doubledRunes[endOffset-1]) {
+			for j := endOffset - 2; j >= entity.Offset; j-- {
+				if !unicode.IsSpace(doubledRunes[j]) {
+					dirty = true
+					entity.Length = j + 1 - entity.Offset
+					break
+				}
+			}
+		}
+
+		if dirty {
+			alignedEntities[i] = entity
+		}
+	}
+
+	return alignedEntities
+}
+
+func markupBraces(entity *client.TextEntity, lbrace, rbrace []rune) []*insertion {
+	return []*insertion{
+		&insertion{
+			Offset: entity.Offset,
+			Runes:  lbrace,
+			Type:   insertionOpening,
+		},
+		&insertion{
+			Offset: entity.Offset + entity.Length,
+			Runes:  rbrace,
+			Type:   insertionClosing,
+		},
+	}
+}
+
+func quotePrependNewlines(entity *client.TextEntity, doubledRunes []rune, markupMode MarkupModeType) []*insertion {
+	if len(doubledRunes) == 0 {
+		return []*insertion{}
+	}
+
+	startRunes := []rune("\n> ")
+	if entity.Offset == 0 || doubledRunes[entity.Offset-1] == newlineCode {
+		startRunes = quoteRunes
+	}
+	insertions := []*insertion{
+		&insertion{
+			Offset: entity.Offset,
+			Runes:  startRunes,
+			Type:   insertionUnpaired,
+		},
+	}
+
+	entityEnd := entity.Offset + entity.Length
+	entityEndInt := int(entityEnd)
+
+	var wasNewline bool
+	// last newline is omitted, there's no need to put quote mark after the quote
+	for i := entity.Offset; i < entityEnd-1; i++ {
+		isNewline := doubledRunes[i] == newlineCode
+		if (isNewline && markupMode == MarkupModeXEP0393) || (wasNewline && isNewline && markupMode == MarkupModeMarkdown) {
+			insertions = append(insertions, &insertion{
+				Offset: i + 1,
+				Runes:  quoteRunes,
+				Type:   insertionUnpaired,
+			})
+		}
+
+		if isNewline {
+			wasNewline = true
+		} else {
+			wasNewline = false
+		}
+	}
+
+	var rbrace []rune
+	if len(doubledRunes) > entityEndInt {
+		if doubledRunes[entityEnd] == newlineCode {
+			if markupMode == MarkupModeMarkdown && len(doubledRunes) > entityEndInt+1 && doubledRunes[entityEndInt+1] != newlineCode {
+				rbrace = newlineRunes
+			}
+		} else {
+			if markupMode == MarkupModeMarkdown {
+				rbrace = doubleNewlineRunes
+			} else {
+				rbrace = newlineRunes
+			}
+		}
+	}
+	insertions = append(insertions, &insertion{
+		Offset: entityEnd,
+		Runes:  rbrace,
+		Type:   insertionClosing,
+	})
+
+	return insertions
+}
+
+// entityToMarkdown generates the wrapping Markdown tags
+func entityToMarkdown(entity *client.TextEntity, doubledRunes []rune, markupMode MarkupModeType) []*insertion {
+	if entity == nil || entity.Type == nil {
+		return []*insertion{}
+	}
+
 	switch entity.Type.TextEntityTypeType() {
 	case client.TypeTextEntityTypeBold:
 		return markupBraces(entity, boldRunesMarkdown, boldRunesMarkdown)
 	case client.TypeTextEntityTypeItalic:
 		return markupBraces(entity, italicRunes, italicRunes)
-	case client.TypeTextEntityTypeCode, client.TypeTextEntityTypePre:
+	case client.TypeTextEntityTypeStrikethrough:
+		return markupBraces(entity, strikeRunesMarkdown, strikeRunesMarkdown)
+	case client.TypeTextEntityTypeCode:
 		return markupBraces(entity, codeRunes, codeRunes)
+	case client.TypeTextEntityTypePre:
+		return markupBraces(entity, preRunesStart, preRunesEnd)
 	case client.TypeTextEntityTypePreCode:
 		preCode, _ := entity.Type.(*client.TextEntityTypePreCode)
-		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), codeRunes)
+		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), preRunesEnd)
+	case client.TypeTextEntityTypeBlockQuote:
+		return quotePrependNewlines(entity, doubledRunes, MarkupModeMarkdown)
 	case client.TypeTextEntityTypeTextUrl:
 		textURL, _ := entity.Type.(*client.TextEntityTypeTextUrl)
 		return markupBraces(entity, []rune("["), []rune("]("+textURL.Url+")"))
 	}
 
-	return nil, nil
+	return []*insertion{}
 }
 
-// EntityToXEP0393 generates the wrapping XEP-0393 tags
+// entityToXEP0393 generates the wrapping XEP-0393 tags
-func EntityToXEP0393(entity *client.TextEntity) (*Insertion, *Insertion) {
+func entityToXEP0393(entity *client.TextEntity, doubledRunes []rune, markupMode MarkupModeType) []*insertion {
+	if entity == nil || entity.Type == nil {
+		return []*insertion{}
+	}
+
 	switch entity.Type.TextEntityTypeType() {
 	case client.TypeTextEntityTypeBold:
 		return markupBraces(entity, boldRunesXEP0393, boldRunesXEP0393)
 	case client.TypeTextEntityTypeItalic:
 		return markupBraces(entity, italicRunes, italicRunes)
-	case client.TypeTextEntityTypeCode, client.TypeTextEntityTypePre:
+	case client.TypeTextEntityTypeStrikethrough:
+		return markupBraces(entity, strikeRunesXEP0393, strikeRunesXEP0393)
+	case client.TypeTextEntityTypeCode:
 		return markupBraces(entity, codeRunes, codeRunes)
+	case client.TypeTextEntityTypePre:
+		return markupBraces(entity, preRunesStart, preRunesEnd)
 	case client.TypeTextEntityTypePreCode:
 		preCode, _ := entity.Type.(*client.TextEntityTypePreCode)
-		// TODO: inline code support (non-standard too)
+		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), preRunesEnd)
-		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), codeRunes)
+	case client.TypeTextEntityTypeBlockQuote:
+		return quotePrependNewlines(entity, doubledRunes, MarkupModeXEP0393)
 	case client.TypeTextEntityTypeTextUrl:
 		textURL, _ := entity.Type.(*client.TextEntityTypeTextUrl)
 		// non-standard, Pidgin-specific
 		return markupBraces(entity, []rune{}, []rune(" <"+textURL.Url+">"))
 	}
 
-	return nil, nil
+	return []*insertion{}
+}
+
+// transform the source text into a form with uniform runes and code points,
+// by duplicating anything beyond the Basic Multilingual Plane
+func textToDoubledRunes(text string) []rune {
+	doubledRunes := make([]rune, 0, len(text)*2)
+	for _, cp := range text {
+		if cp > bmpCeil {
+			doubledRunes = append(doubledRunes, cp, cp)
+		} else {
+			doubledRunes = append(doubledRunes, cp)
+		}
+	}
+
+	return doubledRunes
 }
 
 // Format traverses an already sorted list of entities and wraps the text in a markup
 func Format(
 	sourceText string,
 	entities []*client.TextEntity,
-	entityToMarkup func(*client.TextEntity) (*Insertion, *Insertion),
+	markupMode MarkupModeType,
 ) string {
 	if len(entities) == 0 {
 		return sourceText
 	}
 
-	startStack := make(InsertionStack, 0, len(sourceText))
+	var entityToMarkup func(*client.TextEntity, []rune, MarkupModeType) []*insertion
-	endStack := make(InsertionStack, 0, len(sourceText))
+	if markupMode == MarkupModeXEP0393 {
+		entityToMarkup = entityToXEP0393
+	} else {
+		entityToMarkup = entityToMarkdown
+	}
+
+	doubledRunes := textToDoubledRunes(sourceText)
+
+	mergedEntities := SortEntities(ClaspDirectives(doubledRunes, MergeAdjacentEntities(SortEntities(entities))))
+
+	startStack := make(insertionStack, 0, len(sourceText))
+	endStack := make(insertionStack, 0, len(sourceText))
 
 	// convert entities to a stack of brackets
 	var maxEndOffset int32
-	for _, entity := range entities {
+	for _, entity := range mergedEntities {
 		log.Debugf("%#v", entity)
 		if entity.Length <= 0 {
 			continue
@@ -146,36 +369,70 @@ func Format(
 
 		startStack, endStack = startStack.rebalance(endStack, entity.Offset)
 
-		startInsertion, endInsertion := entityToMarkup(entity)
+		insertions := entityToMarkup(entity, doubledRunes, markupMode)
-		if startInsertion != nil {
+		if len(insertions) > 1 {
-			startStack = append(startStack, startInsertion)
+			startStack = append(startStack, insertions[0:len(insertions)-1]...)
 		}
-		if endInsertion != nil {
+		if len(insertions) > 0 {
-			endStack = append(endStack, endInsertion)
+			endStack = append(endStack, insertions[len(insertions)-1])
 		}
 	}
 	// flush the closing brackets that still remain in endStack
 	startStack, endStack = startStack.rebalance(endStack, maxEndOffset)
+	// sort unpaired insertions
+	sort.SliceStable(startStack, func(i int, j int) bool {
+		ins1 := startStack[i]
+		ins2 := startStack[j]
+		if ins1.Type == insertionUnpaired && ins2.Type == insertionUnpaired {
+			return ins1.Offset < ins2.Offset
+		}
+		if ins1.Type == insertionUnpaired {
+			if ins1.Offset == ins2.Offset {
+				if ins2.Type == insertionOpening { // > **
+					return true
+				} else if ins2.Type == insertionClosing { // **>
+					return false
+				}
+			} else {
+				return ins1.Offset < ins2.Offset
+			}
+		}
+		if ins2.Type == insertionUnpaired {
+			if ins1.Offset == ins2.Offset {
+				if ins1.Type == insertionOpening { // > **
+					return false
+				} else if ins1.Type == insertionClosing { // **>
+					return true
+				}
+			} else {
+				return ins1.Offset < ins2.Offset
+			}
+		}
+		return false
+	})
 
 	// merge brackets into text
 	markupRunes := make([]rune, 0, len(sourceText))
 
 	nextInsertion := startStack.NewIterator()
 	insertion := nextInsertion()
-	var runeI int32
+	var skipNext bool
 
-	for _, cp := range sourceText {
+	for i, cp := range doubledRunes {
-		for insertion != nil && insertion.Offset <= runeI {
+		if skipNext {
+			skipNext = false
+			continue
+		}
+
+		for insertion != nil && int(insertion.Offset) <= i {
 			markupRunes = append(markupRunes, insertion.Runes...)
 			insertion = nextInsertion()
 		}
 
 		markupRunes = append(markupRunes, cp)
 		// skip two UTF-16 code units (not points actually!) if needed
-		if cp > 0x0000ffff {
+		if cp > bmpCeil {
-			runeI += 2
+			skipNext = true
-		} else {
-			runeI++
 		}
 	}
 	for insertion != nil {

telegram/formatter/formatter_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 func TestNoFormatting(t *testing.T) {
-	markup := Format("abc\ndef", []*client.TextEntity{}, EntityToMarkdown)
+	markup := Format("abc\ndef", []*client.TextEntity{}, MarkupModeMarkdown)
 	if markup != "abc\ndef" {
 		t.Errorf("No formatting expected, but: %v", markup)
 	}
@@ -20,7 +20,7 @@ func TestFormattingSimple(t *testing.T) {
 			Length: 4,
 			Type:   &client.TextEntityTypeBold{},
 		},
-	}, EntityToMarkdown)
+	}, MarkupModeMarkdown)
 	if markup != "👙**🐧🐖**" {
 		t.Errorf("Wrong simple formatting: %v", markup)
 	}
@@ -40,7 +40,7 @@ func TestFormattingAdjacent(t *testing.T) {
 				Url: "https://narayana.im/",
 			},
 		},
-	}, EntityToMarkdown)
+	}, MarkupModeMarkdown)
 	if markup != "a👙_🐧_[🐖](https://narayana.im/)" {
 		t.Errorf("Wrong adjacent formatting: %v", markup)
 	}
@@ -63,18 +63,18 @@ func TestFormattingAdjacentAndNested(t *testing.T) {
 			Length: 2,
 			Type:   &client.TextEntityTypeItalic{},
 		},
-	}, EntityToMarkdown)
+	}, MarkupModeMarkdown)
-	if markup != "\n```\n**👙**🐧\n```\n_🐖_" {
+	if markup != "```\n**👙**🐧\n```_🐖_" {
 		t.Errorf("Wrong adjacent&nested formatting: %v", markup)
 	}
 }
 
 func TestRebalanceTwoZero(t *testing.T) {
-	s1 := InsertionStack{
+	s1 := insertionStack{
-		&Insertion{Offset: 7},
+		&insertion{Offset: 7},
-		&Insertion{Offset: 8},
+		&insertion{Offset: 8},
 	}
-	s2 := InsertionStack{}
+	s2 := insertionStack{}
 	s1, s2 = s1.rebalance(s2, 7)
 	if !(len(s1) == 2 && len(s2) == 0 && s1[0].Offset == 7 && s1[1].Offset == 8) {
 		t.Errorf("Wrong rebalance 2–0: %#v %#v", s1, s2)
@@ -82,13 +82,13 @@ func TestRebalanceTwoZero(t *testing.T) {
 }
 
 func TestRebalanceNeeded(t *testing.T) {
-	s1 := InsertionStack{
+	s1 := insertionStack{
-		&Insertion{Offset: 7},
+		&insertion{Offset: 7},
-		&Insertion{Offset: 8},
+		&insertion{Offset: 8},
 	}
-	s2 := InsertionStack{
+	s2 := insertionStack{
-		&Insertion{Offset: 10},
+		&insertion{Offset: 10},
-		&Insertion{Offset: 9},
+		&insertion{Offset: 9},
 	}
 	s1, s2 = s1.rebalance(s2, 9)
 	if !(len(s1) == 3 && len(s2) == 1 &&
@@ -99,13 +99,13 @@ func TestRebalanceNeeded(t *testing.T) {
 }
 
 func TestRebalanceNotNeeded(t *testing.T) {
-	s1 := InsertionStack{
+	s1 := insertionStack{
-		&Insertion{Offset: 7},
+		&insertion{Offset: 7},
-		&Insertion{Offset: 8},
+		&insertion{Offset: 8},
 	}
-	s2 := InsertionStack{
+	s2 := insertionStack{
-		&Insertion{Offset: 10},
+		&insertion{Offset: 10},
-		&Insertion{Offset: 9},
+		&insertion{Offset: 9},
 	}
 	s1, s2 = s1.rebalance(s2, 8)
 	if !(len(s1) == 2 && len(s2) == 2 &&
@@ -116,13 +116,13 @@ func TestRebalanceNotNeeded(t *testing.T) {
 }
 
 func TestRebalanceLate(t *testing.T) {
-	s1 := InsertionStack{
+	s1 := insertionStack{
-		&Insertion{Offset: 7},
+		&insertion{Offset: 7},
-		&Insertion{Offset: 8},
+		&insertion{Offset: 8},
 	}
-	s2 := InsertionStack{
+	s2 := insertionStack{
-		&Insertion{Offset: 10},
+		&insertion{Offset: 10},
-		&Insertion{Offset: 9},
+		&insertion{Offset: 9},
 	}
 	s1, s2 = s1.rebalance(s2, 10)
 	if !(len(s1) == 4 && len(s2) == 0 &&
@@ -133,7 +133,7 @@ func TestRebalanceLate(t *testing.T) {
 }
 
 func TestIteratorEmpty(t *testing.T) {
-	s := InsertionStack{}
+	s := insertionStack{}
 	g := s.NewIterator()
 	v := g()
 	if v != nil {
@@ -142,9 +142,9 @@ func TestIteratorEmpty(t *testing.T) {
 }
 
 func TestIterator(t *testing.T) {
-	s := InsertionStack{
+	s := insertionStack{
-		&Insertion{Offset: 7},
+		&insertion{Offset: 7},
-		&Insertion{Offset: 8},
+		&insertion{Offset: 8},
 	}
 	g := s.NewIterator()
 	v := g()
@@ -206,3 +206,377 @@ func TestSortEmpty(t *testing.T) {
 		t.Errorf("Empty entities set sorting error: %#v", entities)
 	}
 }
+
+func TestNoFormattingXEP0393(t *testing.T) {
+	markup := Format("abc\ndef", []*client.TextEntity{}, MarkupModeXEP0393)
+	if markup != "abc\ndef" {
+		t.Errorf("No formatting expected, but: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393Simple(t *testing.T) {
+	markup := Format("👙🐧🐖", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 2,
+			Length: 4,
+			Type:   &client.TextEntityTypeBold{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "👙*🐧🐖*" {
+		t.Errorf("Wrong simple formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393Adjacent(t *testing.T) {
+	markup := Format("a👙🐧🐖", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 3,
+			Length: 2,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+		&client.TextEntity{
+			Offset: 5,
+			Length: 2,
+			Type: &client.TextEntityTypeTextUrl{
+				Url: "https://narayana.im/",
+			},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "a👙_🐧_🐖 <https://narayana.im/>" {
+		t.Errorf("Wrong adjacent formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393AdjacentAndNested(t *testing.T) {
+	markup := Format("👙🐧🐖", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 0,
+			Length: 4,
+			Type:   &client.TextEntityTypePre{},
+		},
+		&client.TextEntity{
+			Offset: 0,
+			Length: 2,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 4,
+			Length: 2,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "```\n*👙*🐧\n```_🐖_" {
+		t.Errorf("Wrong adjacent&nested formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393AdjacentItalicBoldItalic(t *testing.T) {
+	markup := Format("раса двуногих крысолюдей, которую так редко замечают, что многие отрицают само их существование", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 0,
+			Length: 26,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+		&client.TextEntity{
+			Offset: 26,
+			Length: 69,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 26,
+			Length: 69,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "_раса двуногих крысолюдей, *которую так редко замечают, что многие отрицают само их существование*_" {
+		t.Errorf("Wrong adjacent italic/bold-italic formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393MultipleAdjacent(t *testing.T) {
+	markup := Format("abcde", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 1,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 2,
+			Length: 1,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 3,
+			Length: 1,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 4,
+			Length: 1,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "a*bcd*_e_" {
+		t.Errorf("Wrong multiple adjacent formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393Intersecting(t *testing.T) {
+	markup := Format("abcde", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 1,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 2,
+			Length: 3,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+		&client.TextEntity{
+			Offset: 2,
+			Length: 1,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 3,
+			Length: 1,
+			Type:   &client.TextEntityTypeBold{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "a*b*_*cd*e_" {
+		t.Errorf("Wrong intersecting formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393InlineCode(t *testing.T) {
+	markup := Format("Is Gajim a thing?\n\necho 'Hello'\necho 'world'\n\nhruck(", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 3,
+			Length: 5,
+			Type:   &client.TextEntityTypeCode{},
+		},
+		&client.TextEntity{
+			Offset: 19,
+			Length: 25,
+			Type:   &client.TextEntityTypePre{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "Is `Gajim` a thing?\n\n```\necho 'Hello'\necho 'world'\n```\n\nhruck(" {
+		t.Errorf("Wrong intersecting formatting: %v", markup)
+	}
+}
+
+func TestFormattingMarkdownStrikethrough(t *testing.T) {
+	markup := Format("Everyone dislikes cake.", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 9,
+			Length: 3,
+			Type:   &client.TextEntityTypeStrikethrough{},
+		},
+	}, MarkupModeMarkdown)
+	if markup != "Everyone ~~dis~~likes cake." {
+		t.Errorf("Wrong strikethrough formatting: %v", markup)
+	}
+}
+
+func TestFormattingXEP0393Strikethrough(t *testing.T) {
+	markup := Format("Everyone dislikes cake.", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 9,
+			Length: 3,
+			Type:   &client.TextEntityTypeStrikethrough{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "Everyone ~dis~likes cake." {
+		t.Errorf("Wrong strikethrough formatting: %v", markup)
+	}
+}
+
+func TestClaspLeft(t *testing.T) {
+	text := textToDoubledRunes("a b c")
+	entities := []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 2,
+		},
+	}
+	entities = ClaspDirectives(text, entities)
+	if !(len(entities) == 1 &&
+		entities[0].Offset == 2 && entities[0].Length == 1) {
+		t.Errorf("Wrong claspleft: %#v", entities)
+	}
+}
+
+func TestClaspBoth(t *testing.T) {
+	text := textToDoubledRunes("a b c")
+	entities := []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 3,
+		},
+	}
+	entities = ClaspDirectives(text, entities)
+	if !(len(entities) == 1 &&
+		entities[0].Offset == 2 && entities[0].Length == 1) {
+		t.Errorf("Wrong claspboth: %#v", entities)
+	}
+}
+
+func TestClaspNotNeeded(t *testing.T) {
+	text := textToDoubledRunes(" abc ")
+	entities := []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 3,
+		},
+	}
+	entities = ClaspDirectives(text, entities)
+	if !(len(entities) == 1 &&
+		entities[0].Offset == 1 && entities[0].Length == 3) {
+		t.Errorf("Wrong claspnotneeded: %#v", entities)
+	}
+}
+
+func TestClaspNested(t *testing.T) {
+	text := textToDoubledRunes("a b c")
+	entities := []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 3,
+		},
+		&client.TextEntity{
+			Offset: 2,
+			Length: 2,
+		},
+	}
+	entities = ClaspDirectives(text, entities)
+	if !(len(entities) == 2 &&
+		entities[0].Offset == 2 && entities[0].Length == 1 &&
+		entities[1].Offset == 2 && entities[1].Length == 1) {
+		t.Errorf("Wrong claspnested: %#v", entities)
+	}
+}
+
+func TestClaspEmoji(t *testing.T) {
+	text := textToDoubledRunes("a 🐖 c")
+	entities := []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 1,
+			Length: 4,
+		},
+	}
+	entities = ClaspDirectives(text, entities)
+	if !(len(entities) == 1 &&
+		entities[0].Offset == 2 && entities[0].Length == 2) {
+		t.Errorf("Wrong claspemoji: %#v", entities)
+	}
+}
+
+func TestNoNewlineBlockquoteXEP0393(t *testing.T) {
+	markup := Format("yes it can i think", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 4,
+			Length: 6,
+			Type:   &client.TextEntityTypeBlockQuote{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "yes \n> it can\n i think" {
+		t.Errorf("Wrong blockquote formatting: %v", markup)
+	}
+}
+
+func TestNoNewlineBlockquoteMarkdown(t *testing.T) {
+	markup := Format("yes it can i think", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 4,
+			Length: 6,
+			Type:   &client.TextEntityTypeBlockQuote{},
+		},
+	}, MarkupModeMarkdown)
+	if markup != "yes \n> it can\n\n i think" {
+		t.Errorf("Wrong blockquote formatting: %v", markup)
+	}
+}
+
+func TestMultilineBlockquoteXEP0393(t *testing.T) {
+	markup := Format("hruck\npuck\n\nshuck\ntext", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 0,
+			Length: 17,
+			Type:   &client.TextEntityTypeBlockQuote{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "> hruck\n> puck\n> \n> shuck\ntext" {
+		t.Errorf("Wrong blockquote formatting: %v", markup)
+	}
+}
+
+func TestMultilineBlockquoteMarkdown(t *testing.T) {
+	markup := Format("hruck\npuck\n\nshuck\ntext", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 0,
+			Length: 17,
+			Type:   &client.TextEntityTypeBlockQuote{},
+		},
+	}, MarkupModeMarkdown)
+	if markup != "> hruck\npuck\n\n> shuck\n\ntext" {
+		t.Errorf("Wrong blockquote formatting: %v", markup)
+	}
+}
+
+func TestMixedBlockquoteXEP0393(t *testing.T) {
+	markup := Format("hruck\npuck\nshuck\ntext", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 0,
+			Length: 16,
+			Type:   &client.TextEntityTypeBlockQuote{},
+		},
+		&client.TextEntity{
+			Offset: 0,
+			Length: 16,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 0,
+			Length: 10,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+		&client.TextEntity{
+			Offset: 7,
+			Length: 2,
+			Type:   &client.TextEntityTypeStrikethrough{},
+		},
+	}, MarkupModeXEP0393)
+	if markup != "> *_hruck\n> p~uc~k_\n> shuck*\ntext" {
+		t.Errorf("Wrong blockquote formatting: %v", markup)
+	}
+}
+
+func TestMixedBlockquoteMarkdown(t *testing.T) {
+	markup := Format("hruck\npuck\nshuck\ntext", []*client.TextEntity{
+		&client.TextEntity{
+			Offset: 0,
+			Length: 16,
+			Type:   &client.TextEntityTypeBlockQuote{},
+		},
+		&client.TextEntity{
+			Offset: 0,
+			Length: 16,
+			Type:   &client.TextEntityTypeBold{},
+		},
+		&client.TextEntity{
+			Offset: 0,
+			Length: 10,
+			Type:   &client.TextEntityTypeItalic{},
+		},
+		&client.TextEntity{
+			Offset: 7,
+			Length: 2,
+			Type:   &client.TextEntityTypeStrikethrough{},
+		},
+	}, MarkupModeMarkdown)
+	if markup != "> **_hruck\np~~uc~~k_\nshuck**\n\ntext" {
+		t.Errorf("Wrong blockquote formatting: %v", markup)
+	}
+}

telegram/handlers.go

@@ -45,6 +45,41 @@ func (c *Client) getChatMessageLock(chatID int64) *sync.Mutex {
 	return lock
 }
 
+func (c *Client) cleanTempFile(path string) {
+	os.Remove(path)
+
+	dir := filepath.Dir(path)
+	dirName := filepath.Base(dir)
+	if strings.HasPrefix(dirName, "telegabber-") {
+		os.Remove(dir)
+	}
+}
+
+func (c *Client) sendMarker(chatId, messageId int64, typ gateway.MarkerType) {
+	xmppId, err := gateway.IdsDB.GetByTgIds(c.Session.Login, c.jid, chatId, messageId)
+	if err != nil {
+		xmppId = strconv.FormatInt(messageId, 10)
+	}
+
+	var stringType string
+	if typ == gateway.MarkerTypeReceived {
+		stringType = "received"
+	} else if typ == gateway.MarkerTypeDisplayed {
+		stringType = "displayed"
+	}
+	log.WithFields(log.Fields{
+		"xmppId": xmppId,
+	}).Debugf("marker: %s", stringType)
+
+	gateway.SendMessageMarker(
+		c.jid,
+		strconv.FormatInt(chatId, 10),
+		c.xmpp,
+		typ,
+		xmppId,
+	)
+}
+
 func (c *Client) updateHandler() {
 	listener := c.client.GetListener()
 	defer listener.Close()
@@ -107,19 +142,36 @@ func (c *Client) updateHandler() {
 					uhOh()
 				}
 				c.updateDeleteMessages(typedUpdate)
-			case client.TypeUpdateFile:
-				typedUpdate, ok := update.(*client.UpdateFile)
-				if !ok {
-					uhOh()
-				}
-				c.updateFile(typedUpdate)
-				log.Debugf("%#v", typedUpdate.File)
 			case client.TypeUpdateAuthorizationState:
 				typedUpdate, ok := update.(*client.UpdateAuthorizationState)
 				if !ok {
 					uhOh()
 				}
 				c.updateAuthorizationState(typedUpdate)
+			case client.TypeUpdateMessageSendSucceeded:
+				typedUpdate, ok := update.(*client.UpdateMessageSendSucceeded)
+				if !ok {
+					uhOh()
+				}
+				c.updateMessageSendSucceeded(typedUpdate)
+			case client.TypeUpdateMessageSendFailed:
+				typedUpdate, ok := update.(*client.UpdateMessageSendFailed)
+				if !ok {
+					uhOh()
+				}
+				c.updateMessageSendFailed(typedUpdate)
+			case client.TypeUpdateChatTitle:
+				typedUpdate, ok := update.(*client.UpdateChatTitle)
+				if !ok {
+					uhOh()
+				}
+				c.updateChatTitle(typedUpdate)
+			case client.TypeUpdateChatReadOutbox:
+				typedUpdate, ok := update.(*client.UpdateChatReadOutbox)
+				if !ok {
+					uhOh()
+				}
+				c.updateChatReadOutbox(typedUpdate)
 			default:
 				// log only handled types
 				continue
@@ -134,13 +186,13 @@ func (c *Client) updateHandler() {
 func (c *Client) updateUser(update *client.UpdateUser) {
 	c.cache.SetUser(update.User.Id, update.User)
 	show, status, presenceType := c.userStatusToText(update.User.Status, update.User.Id)
-	go c.ProcessStatusUpdate(update.User.Id, status, show, gateway.SPType(presenceType))
+	go c.ProcessStatusUpdate(update.User.Id, status, show, false, gateway.SPType(presenceType))
 }
 
 // user status changed
 func (c *Client) updateUserStatus(update *client.UpdateUserStatus) {
 	show, status, presenceType := c.userStatusToText(update.Status, update.UserId)
-	go c.ProcessStatusUpdate(update.UserId, status, show, gateway.SPImmed(false), gateway.SPType(presenceType))
+	go c.ProcessStatusUpdate(update.UserId, status, show, false, gateway.SPImmed(false), gateway.SPType(presenceType))
 }
 
 // new chat discovered
@@ -154,14 +206,14 @@ func (c *Client) updateNewChat(update *client.UpdateNewChat) {
 			}
 		}
 
-		c.cache.SetChat(update.Chat.Id, update.Chat)
+		c.cache.SetChat(update.Chat.Id, update.Chat, true)
 
 		if update.Chat.Positions != nil && len(update.Chat.Positions) > 0 {
 			c.subscribeToID(update.Chat.Id, update.Chat)
 		}
 
 		if update.Chat.Id < 0 {
-			c.ProcessStatusUpdate(update.Chat.Id, update.Chat.Title, "chat")
+			c.ProcessStatusUpdate(update.Chat.Id, update.Chat.Title, "chat", true)
 		}
 	}()
 }
@@ -182,18 +234,34 @@ func (c *Client) updateChatLastMessage(update *client.UpdateChatLastMessage) {
 
 // message received
 func (c *Client) updateNewMessage(update *client.UpdateNewMessage) {
-	go func() {
+	chatId := update.Message.ChatId
-		chatId := update.Message.ChatId
+	if c.Session.IsChatIgnored(chatId) {
+		return
+	}
 
-		// guarantee sequential message delivering per chat
+	// guarantee sequential message delivering per chat
-		lock := c.getChatMessageLock(chatId)
+	lock := c.getChatMessageLock(chatId)
+	go func() {
 		lock.Lock()
 		defer lock.Unlock()
 
+		var forceCmd bool
+		if c.LastBotCmdString != "" && update.Message.IsOutgoing {
+			if update.Message.Content.MessageContentType() == client.TypeMessageText {
+				textMessage, _ := update.Message.Content.(*client.MessageText)
+
+				if textMessage.Text != nil && textMessage.Text.Text == c.LastBotCmdString {
+					forceCmd = true
+					c.LastBotCmdString = ""
+				}
+			}
+		}
+
 		// ignore self outgoing messages
 		if update.Message.IsOutgoing &&
 			update.Message.SendingState != nil &&
-			update.Message.SendingState.MessageSendingStateType() == client.TypeMessageSendingStatePending {
+			update.Message.SendingState.MessageSendingStateType() == client.TypeMessageSendingStatePending &&
+			!forceCmd {
 			return
 		}
 
@@ -201,98 +269,160 @@ func (c *Client) updateNewMessage(update *client.UpdateNewMessage) {
 			"chat_id": chatId,
 		}).Warn("New message from chat")
 
-		var text string
+		c.ProcessIncomingMessage(chatId, update.Message)
-		content := update.Message.Content
-		if content != nil && content.MessageContentType() == client.TypeMessageChatChangePhoto {
-			chat, err := c.client.GetChat(&client.GetChatRequest{
-				ChatId: chatId,
-			})
-			if err == nil {
-				c.cache.SetChat(chatId, chat)
-				go c.ProcessStatusUpdate(chatId, "", "", gateway.SPImmed(true))
-				text = "<Chat photo has changed>"
-			}
-		} else {
-			text = c.messageToText(update.Message, false)
-			file, filename := c.contentToFilename(content)
-
-			// download file(s)
-			if file != nil && !file.Local.IsDownloadingCompleted {
-				newFile, err := c.DownloadFile(file.Id, 1, true)
-				if err == nil {
-					file = newFile
-				}
-			}
-			// OTR support (I do not know why would you need it, seriously)
-			if !(strings.HasPrefix(text, "?OTR") || c.Session.RawMessages) {
-				var prefix strings.Builder
-				prefix.WriteString(c.messageToPrefix(update.Message, c.formatContent(file, filename)))
-				if text != "" {
-					// \n if it is groupchat and message is not empty
-					if chatId < 0 {
-						prefix.WriteString("\n")
-					} else if chatId > 0 {
-						prefix.WriteString(" | ")
-					}
-
-					prefix.WriteString(text)
-				}
-
-				text = prefix.String()
-			}
-		}
-
-		// mark message as read
-		c.client.ViewMessages(&client.ViewMessagesRequest{
-			ChatId:     chatId,
-			MessageIds: []int64{update.Message.Id},
-			ForceRead:  true,
-		})
-		// forward message to XMPP
-		gateway.SendMessage(c.jid, strconv.FormatInt(chatId, 10), text, c.xmpp)
 	}()
 }
 
 // message content updated
 func (c *Client) updateMessageContent(update *client.UpdateMessageContent) {
-	markupFunction := formatter.EntityToXEP0393
+	if c.Session.IsChatIgnored(update.ChatId) {
+		return
+	}
+
+	markupFunction := c.getFormatter()
+
+	log.Debugf("newContent: %#v", update.NewContent)
+
+	lock := c.getChatMessageLock(update.ChatId)
+	lock.Lock()
+	lock.Unlock()
+	c.SendMessageLock.Lock()
+	c.SendMessageLock.Unlock()
+
+	xmppId, xmppIdErr := gateway.IdsDB.GetByTgIds(c.Session.Login, c.jid, update.ChatId, update.MessageId)
+	var ignoredResource string
+	if xmppIdErr == nil {
+		ignoredResource = c.popFromEditOutbox(xmppId)
+	} else {
+		log.Infof("Couldn't retrieve XMPP message ids for %v, an echo may happen", update.MessageId)
+	}
+	log.Infof("ignoredResource: %v", ignoredResource)
+
+	jids := c.getCarbonFullJids(true, ignoredResource)
+	if len(jids) == 0 {
+		log.Info("The only resource is ignored, aborting")
+		return
+	}
+
 	if update.NewContent.MessageContentType() == client.TypeMessageText {
 		textContent := update.NewContent.(*client.MessageText)
-		text := fmt.Sprintf("✎ %v | %s", update.MessageId, formatter.Format(
+		log.Debugf("textContent: %#v", textContent.Text)
-			textContent.Text.Text,
+
-			formatter.SortEntities(textContent.Text.Entities),
+		var replaceId string
-			markupFunction,
+		sId := strconv.FormatInt(update.MessageId, 10)
-		))
+		var isCarbon bool
-		gateway.SendMessage(c.jid, strconv.FormatInt(update.ChatId, 10), text, c.xmpp)
+
+		go func() {
+			message, messageErr := c.client.GetMessage(&client.GetMessageRequest{
+				ChatId:    update.ChatId,
+				MessageId: update.MessageId,
+			})
+			if messageErr != nil {
+				// odnako za vremya puti
+				// sobaka mogla podrasti
+				c.MessageIdChangesLock.Lock()
+				idsMap, idsMapOk := c.MessageIdChanges[update.ChatId]
+				hadNoId := false
+				if idsMapOk {
+					newId, newIdOk := idsMap[update.MessageId]
+					if newIdOk {
+						if newId.Id == 0 {
+							hadNoId = true
+							c.MessageIdChangesLock.Unlock()
+							newId.Lock()
+						}
+						log.Infof("falling back to updated message id: %v/%v->%v", update.ChatId, update.MessageId, newId.Id)
+						message, messageErr = c.client.GetMessage(&client.GetMessageRequest{
+							ChatId:    update.ChatId,
+							MessageId: newId.Id,
+						})
+					}
+				}
+				if !hadNoId {
+					c.MessageIdChangesLock.Unlock()
+				}
+			}
+			var prefix string
+			if messageErr == nil {
+				if message.EditDate == 0 {
+					return
+				}
+				log.Debugf("editDate: %v", message.EditDate)
+
+				isCarbon = c.isCarbonsEnabled() && message.IsOutgoing
+				// reply correction support in clients is suboptimal yet, so cut them out for now
+				prefix, _ = c.messageToPrefix(message, "", "", true)
+			} else {
+				log.Errorf("No message %v/%v found, cannot reliably determine if it is a carbon and if it is edited: %v", update.ChatId, update.MessageId, messageErr.Error())
+			}
+
+			// use XEP-0308 edits only if the last message is edited for sure, fallback otherwise
+			if c.Session.NativeEdits {
+				lastXmppId, ok := c.getLastChatMessageId(update.ChatId)
+				if xmppIdErr != nil {
+					xmppId = sId
+				}
+				if ok && lastXmppId == xmppId {
+					replaceId = xmppId
+				} else {
+					log.Infof("Mismatching message ids: %v %v, falling back to separate edit message", lastXmppId, xmppId)
+				}
+			}
+
+			var text strings.Builder
+
+			if replaceId == "" {
+				var editChar string
+				if c.Session.AsciiArrows {
+					editChar = "e"
+				} else {
+					editChar = "✎"
+				}
+				text.WriteString(fmt.Sprintf("%s %v | ", editChar, update.MessageId))
+			} else if prefix != "" {
+				text.WriteString(prefix)
+				text.WriteString(c.getPrefixSeparator(update.ChatId))
+			}
+
+			text.WriteString(formatter.Format(
+				textContent.Text.Text,
+				textContent.Text.Entities,
+				markupFunction,
+			))
+
+			sChatId := strconv.FormatInt(update.ChatId, 10)
+			for _, jid := range jids {
+				gateway.SendMessage(jid, sChatId, text.String(), "e"+sId, c.xmpp, nil, replaceId, isCarbon, false)
+			}
+		}()
 	}
 }
 
 // message(s) deleted
 func (c *Client) updateDeleteMessages(update *client.UpdateDeleteMessages) {
 	if update.IsPermanent {
-		text := "✗ " + strings.Join(int64SliceToStringSlice(update.MessageIds), ",")
+		for _, deleteId := range update.MessageIds {
-		gateway.SendMessage(c.jid, strconv.FormatInt(update.ChatId, 10), text, c.xmpp)
+			c.tryUnlockMessageId(update.ChatId, deleteId)
-	}
-}
-
-// file downloaded
-func (c *Client) updateFile(update *client.UpdateFile) {
-	// not really
-	if !update.File.Local.IsDownloadingCompleted {
-		return
-	}
-
-	err := os.Symlink(
-		update.File.Local.Path,
-		c.formatFilePath(c.content.Path, update.File.Remote.UniqueId, filepath.Ext(update.File.Local.Path)),
-	)
-	if err != nil {
-		linkErr := err.(*os.LinkError)
-		if linkErr.Err.Error() == "file exists" {
-			log.Warn(err.Error())
-		} else {
-			log.Errorf("Error creating symlink: %v", err)
 		}
+
+		if c.Session.IsChatIgnored(update.ChatId) {
+			return
+		}
+		if c.Session.IgnoreGroupDeletions {
+			chatType, chatTypeErr := c.GetChatType(update.ChatId, false)
+			if chatTypeErr == nil && (chatType == ChatTypeBasicGroup || chatType == ChatTypeSupergroup) {
+				return
+			}
+		}
+
+		var deleteChar string
+		if c.Session.AsciiArrows {
+			deleteChar = "X "
+		} else {
+			deleteChar = "✗ "
+		}
+		text := deleteChar + strings.Join(int64SliceToStringSlice(update.MessageIds), ",")
+		gateway.SendTextMessage(c.jid, strconv.FormatInt(update.ChatId, 10), text, c.xmpp)
 	}
 }
 
@@ -305,3 +435,74 @@ func (c *Client) updateAuthorizationState(update *client.UpdateAuthorizationStat
 		c.forceClose()
 	}
 }
+
+func (c *Client) updateMessageSendSucceeded(update *client.UpdateMessageSendSucceeded) {
+	// replace message ID in local database
+	log.Debugf("replace message %v with %v", update.OldMessageId, update.Message.Id)
+	if err := gateway.IdsDB.ReplaceTgId(c.Session.Login, c.jid, update.Message.ChatId, update.OldMessageId, update.Message.Id); err != nil {
+		log.Errorf("failed to replace %v with %v: %v", update.OldMessageId, update.Message.Id, err.Error())
+	}
+
+	c.MessageIdChangesLock.Lock()
+	idsMap, ok := c.MessageIdChanges[update.Message.ChatId]
+	if !ok {
+		idsMap = make(map[int64]*newId)
+		c.MessageIdChanges[update.Message.ChatId] = idsMap
+	}
+	id, ok := idsMap[update.OldMessageId]
+	if !ok {
+		id = newNewId()
+		idsMap[update.OldMessageId] = id
+	}
+	id.Id = update.Message.Id
+	c.MessageIdChangesLock.Unlock()
+
+	c.sendMarker(update.Message.ChatId, update.Message.Id, gateway.MarkerTypeReceived)
+
+	// clean uploaded files
+	file, _ := c.contentToFile(update.Message.Content)
+	if file != nil && file.Local != nil {
+		c.cleanTempFile(file.Local.Path)
+	}
+}
+func (c *Client) updateMessageSendFailed(update *client.UpdateMessageSendFailed) {
+	c.tryUnlockMessageId(update.Message.ChatId, update.OldMessageId)
+
+	// clean uploaded files
+	file, _ := c.contentToFile(update.Message.Content)
+	if file != nil && file.Local != nil {
+		c.cleanTempFile(file.Local.Path)
+	}
+}
+
+// chat title changed
+func (c *Client) updateChatTitle(update *client.UpdateChatTitle) {
+	gateway.SetNickname(c.jid, strconv.FormatInt(update.ChatId, 10), update.Title, c.xmpp)
+
+	// set also the status (for group chats only)
+	chat, user, _ := c.GetContactByID(update.ChatId, nil, false)
+	if user == nil {
+		c.ProcessStatusUpdate(update.ChatId, update.Title, "chat", false, gateway.SPImmed(true))
+	}
+
+	// update chat title in the cache
+	if chat != nil {
+		chat.Title = update.Title
+	}
+}
+
+func (c *Client) updateChatReadOutbox(update *client.UpdateChatReadOutbox) {
+	c.sendMarker(update.ChatId, update.LastReadOutboxMessageId, gateway.MarkerTypeDisplayed)
+}
+
+func (c *Client) tryUnlockMessageId(chatId, messageId int64) {
+	c.MessageIdChangesLock.Lock()
+	idsMap, ok := c.MessageIdChanges[chatId]
+	if ok {
+		id, ok := idsMap[messageId]
+		if ok {
+			id.Unlock()
+		}
+	}
+	c.MessageIdChangesLock.Unlock()
+}

telegram/loginwizard.go

@@ -0,0 +1,82 @@
+package telegram
+
+import (
+	"dev.narayana.im/narayana/telegabber/xmpp/gateway"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/zelenin/go-tdlib/client"
+)
+
+// StartLoginWizard initiates a loginWizard object
+func (c *Client) StartLoginWizard(inCommand bool) {
+	if c.loginWizard == nil {
+		c.loginWizard = &loginWizardMetadata{
+			nextStage:   make(chan string, 1),
+			commandSent: inCommand,
+		}
+	} else {
+		c.loginWizard.commandSent = inCommand
+	}
+}
+
+// StopLoginWizard safely destroys the loginWizard object
+func (c *Client) StopLoginWizard() {
+	c.locks.loginWizardReadLock.Lock()
+	c.locks.loginWizardWriteLock.Lock()
+	if c.loginWizard != nil {
+		close(c.loginWizard.nextStage)
+		c.loginWizard = nil
+	}
+	c.locks.loginWizardReadLock.Unlock()
+	c.locks.loginWizardWriteLock.Unlock()
+}
+
+// GetLoginWizardNextStage waits for the next stage from the channel
+func (c *Client) GetLoginWizardNextStage() string {
+	c.locks.loginWizardReadLock.Lock()
+	defer c.locks.loginWizardReadLock.Unlock()
+
+	if c.loginWizard != nil {
+		if c.loginWizard.commandSent {
+			log.Debugf("waiting for nextStage...")
+			nextStage := <-c.loginWizard.nextStage
+			c.loginWizard.commandSent = false
+			c.loginWizard.chanBusy = false
+			log.Debugf("yielded stage %v", nextStage)
+			return nextStage
+		} else {
+			if c.lastAuthorizationStateType == client.TypeAuthorizationStateWaitPhoneNumber ||
+				c.lastAuthorizationStateType == client.TypeAuthorizationStateClosing ||
+				c.Session.Login == "" {
+				return "login"
+			}
+			switch c.lastAuthorizationStateType {
+			case client.TypeAuthorizationStateWaitCode:
+				return "code"
+			case client.TypeAuthorizationStateWaitPassword:
+				return "password"
+			}
+		}
+	}
+
+	return ""
+}
+
+func (c *Client) wizardStageOrPrompt(stage, message string) {
+	c.locks.loginWizardWriteLock.Lock()
+	if c.loginWizard == nil {
+		c.locks.loginWizardWriteLock.Unlock()
+		if message != "" {
+			gateway.SendServiceMessage(c.jid, message, c.xmpp)
+		}
+	} else {
+		if !c.loginWizard.chanBusy {
+			log.Debugf("writing wizard stage %v", stage)
+			c.loginWizard.nextStage <- stage
+		} else {
+			log.Warn("Skipping stage %v, wizard cannot keep up", stage)
+		}
+		c.loginWizard.chanBusy = true
+		c.locks.loginWizardWriteLock.Unlock()
+	}
+}

telegram/utils_test.go

@@ -30,7 +30,7 @@ func TestOnlineRecently(t *testing.T) {
 }
 
 func TestOnlineOfflineAway(t *testing.T) {
-	location, _ := time.LoadLocation("Europe/Berlin")
+	location := time.FixedZone("UTC+1", 3600)
 	timestamp := time.Now().In(location).Unix() - 3599
 	tm := time.Unix(timestamp, 0).In(location)
 	c := &Client{
@@ -130,7 +130,7 @@ func TestFormatMessageMultilinePreview(t *testing.T) {
 	}
 }
 
-func TestFormatContent(t *testing.T) {
+func TestFormatFile(t *testing.T) {
 	file := client.File{
 		Size: 23899,
 		Local: &client.LocalFile{
@@ -146,10 +146,38 @@ func TestFormatContent(t *testing.T) {
 		},
 	}
 
-	content := c.formatContent(&file, "a.jpg")
+	content, link := c.formatFile(&file, false)
-	if content != "a.jpg (23 kbytes) | localhvost/b0896d9e9f1de7d2af59b080c3f0947b838c5c6c64f71c68a4b690a15de2ccf8.jpg" {
+	if content != ". (23 kbytes) | " {
 		t.Errorf("Wrong file label: %v", content)
 	}
+	if link != "" {
+		t.Errorf("Wrong file link: %v", link)
+	}
+}
+
+func TestFormatPreview(t *testing.T) {
+	file := client.File{
+		Size: 23899,
+		Local: &client.LocalFile{
+			Path: "c:/pron/smokovnica_vhsrip.mov",
+		},
+		Remote: &client.RemoteFile{
+			UniqueId: "aZaZaZ",
+		},
+	}
+	c := Client{
+		content: &config.TelegramContentConfig{
+			Link: "localhvost",
+		},
+	}
+
+	content, link := c.formatFile(&file, true)
+	if content != "" {
+		t.Errorf("Wrong preview label: %v", content)
+	}
+	if link != "" {
+		t.Errorf("Wrong preview link: %v", link)
+	}
 }
 
 func TestMessageToTextSticker(t *testing.T) {
@@ -341,6 +369,53 @@ func TestMessageAnimation(t *testing.T) {
 	}
 }
 
+func TestMessageTtl1(t *testing.T) {
+	ttl := client.Message{
+		Content: &client.MessageChatSetMessageAutoDeleteTime{},
+	}
+	text := (&Client{}).messageToText(&ttl, false)
+	if text != "The self-destruct timer was disabled" {
+		t.Errorf("Wrong anonymous off ttl label: %v", text)
+	}
+}
+
+func TestMessageTtl2(t *testing.T) {
+	ttl := client.Message{
+		Content: &client.MessageChatSetMessageAutoDeleteTime{
+			MessageAutoDeleteTime: 3,
+		},
+	}
+	text := (&Client{}).messageToText(&ttl, false)
+	if text != "The self-destruct timer was set to 3 seconds" {
+		t.Errorf("Wrong anonymous ttl label: %v", text)
+	}
+}
+
+func TestMessageTtl3(t *testing.T) {
+	ttl := client.Message{
+		Content: &client.MessageChatSetMessageAutoDeleteTime{
+			FromUserId: 3,
+		},
+	}
+	text := (&Client{}).messageToText(&ttl, false)
+	if text != "unknown contact: TDlib instance is offline disabled the self-destruct timer" {
+		t.Errorf("Wrong off ttl label: %v", text)
+	}
+}
+
+func TestMessageTtl4(t *testing.T) {
+	ttl := client.Message{
+		Content: &client.MessageChatSetMessageAutoDeleteTime{
+			FromUserId:            3,
+			MessageAutoDeleteTime: 3,
+		},
+	}
+	text := (&Client{}).messageToText(&ttl, false)
+	if text != "unknown contact: TDlib instance is offline set the self-destruct timer to 3 seconds" {
+		t.Errorf("Wrong ttl label: %v", text)
+	}
+}
+
 func TestMessageUnknown(t *testing.T) {
 	unknown := client.Message{
 		Content: &client.MessageExpiredPhoto{},
@@ -351,184 +426,59 @@ func TestMessageUnknown(t *testing.T) {
 	}
 }
 
-func TestContentToFilenameSticker(t *testing.T) {
-	sticker := client.MessageSticker{
-		Sticker: &client.Sticker{},
-	}
-	_, filename := (&Client{}).contentToFilename(&sticker)
-	if filename != "sticker.webp" {
-		t.Errorf("Wrong sticker filename")
-	}
-}
-
-func TestContentToFilenameVoice(t *testing.T) {
-	voice := client.MessageVoiceNote{
-		VoiceNote: &client.VoiceNote{
-			Duration: 56,
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&voice)
-	if filename != "voice note (56 s.).oga" {
-		t.Errorf("Wrong voice note filename")
-	}
-}
-
-func TestContentToFilenameVideoNote(t *testing.T) {
-	video := client.MessageVideoNote{
-		VideoNote: &client.VideoNote{
-			Duration: 56,
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&video)
-	if filename != "video note (56 s.).mp4" {
-		t.Errorf("Wrong video note filename")
-	}
-}
-
-func TestContentToFilenameAnimation(t *testing.T) {
-	animation := client.MessageAnimation{
-		Animation: &client.Animation{},
-	}
-	_, filename := (&Client{}).contentToFilename(&animation)
-	if filename != "animation.mp4" {
-		t.Errorf("Wrong animation filename")
-	}
-}
-
-func TestContentToFilenamePhoto(t *testing.T) {
-	photo := client.MessagePhoto{
-		Photo: &client.Photo{
-			Sizes: []*client.PhotoSize{
-				&client.PhotoSize{
-					Photo: &client.File{},
-				},
-				&client.PhotoSize{
-					Photo: &client.File{
-						Id: 56,
-					},
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&photo)
-	if filename != "56.jpg" {
-		t.Errorf("Wrong photo filename")
-	}
-}
-
-func TestContentToFilenamePhotoNoSizes(t *testing.T) {
-	photo := client.MessagePhoto{
-		Photo: &client.Photo{
-			Sizes: []*client.PhotoSize{},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&photo)
-	if filename != "" {
-		t.Errorf("Wrong filename of sizeless photo")
-	}
-}
-
-func TestContentToFilenameAudio(t *testing.T) {
-	audio := client.MessageAudio{
-		Audio: &client.Audio{
-			FileName: "swine.mp3",
-			Audio: &client.File{
-				Local: &client.LocalFile{
-					Path: "C:/WINNT/swine.mp3",
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&audio)
-	if filename != "swine.mp3" {
-		t.Errorf("Not oinking, shame on you!")
-	}
-}
-
-func TestContentToFilenameVideo(t *testing.T) {
-	video := client.MessageVideo{
-		Video: &client.Video{
-			FileName: "swine.3gp",
-			Video: &client.File{
-				Local: &client.LocalFile{
-					Path: "C:/Document and Settings/Svinarchuk-PC/swine.3gp",
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&video)
-	if filename != "swine.3gp" {
-		t.Errorf("Not pigdancing, shame on you!")
-	}
-}
-
-func TestContentToFilenameDocument(t *testing.T) {
-	document := client.MessageDocument{
-		Document: &client.Document{
-			FileName: "swine.doc",
-			Document: &client.File{
-				Local: &client.LocalFile{
-					Path: "D:/My Documents/swine.doc",
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&document)
-	if filename != "swine.doc" {
-		t.Errorf("Not hoofstomping, shame on you!")
-	}
-}
-
-func TestContentToFilenameUnknown(t *testing.T) {
-	unknown := client.MessageExpiredPhoto{}
-	_, filename := (&Client{}).contentToFilename(&unknown)
-	if filename != "" {
-		t.Errorf("Wrong filename of unknown content")
-	}
-}
-
 func TestMessageToPrefix1(t *testing.T) {
 	message := client.Message{
 		Id:         42,
 		IsOutgoing: true,
 		ForwardInfo: &client.MessageForwardInfo{
-			Origin: &client.MessageForwardOriginHiddenUser{
+			Origin: &client.MessageOriginHiddenUser{
 				SenderName: "ziz",
 			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "")
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "", "", false)
 	if prefix != "➡ 42 | fwd: ziz" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
 }
 
 func TestMessageToPrefix2(t *testing.T) {
 	message := client.Message{
 		Id: 56,
 		ForwardInfo: &client.MessageForwardInfo{
-			Origin: &client.MessageForwardOriginChannel{
+			Origin: &client.MessageOriginChannel{
 				AuthorSignature: "zaz",
 			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "")
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "y.jpg", "", false)
-	if prefix != "⬅ 56 | fwd:  (zaz)" {
+	if prefix != "⬅ 56 | fwd:  (zaz) | preview: y.jpg" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
 }
 
 func TestMessageToPrefix3(t *testing.T) {
 	message := client.Message{
 		Id: 56,
 		ForwardInfo: &client.MessageForwardInfo{
-			Origin: &client.MessageForwardOriginChannel{},
+			Origin: &client.MessageOriginChannel{
+				AuthorSignature: "zuz",
+			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "a.jpg")
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "a.jpg", false)
-	if prefix != "< 56 | fwd:  | file: a.jpg" {
+	if prefix != "< 56 | fwd:  (zuz) | file: a.jpg" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
 }
 
 func TestMessageToPrefix4(t *testing.T) {
@@ -536,8 +486,139 @@ func TestMessageToPrefix4(t *testing.T) {
 		Id:         23,
 		IsOutgoing: true,
 	}
-	prefix := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "")
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "", false)
 	if prefix != "> 23" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
+}
+
+func TestMessageToPrefix5(t *testing.T) {
+	message := client.Message{
+		Id: 560,
+		ForwardInfo: &client.MessageForwardInfo{
+			Origin: &client.MessageOriginChat{
+				AuthorSignature: "zyz",
+			},
+		},
+	}
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "h.jpg", "a.jpg", false)
+	if prefix != "< 560 | fwd:  (zyz) | preview: h.jpg | file: a.jpg" {
+		t.Errorf("Wrong prefix: %v", prefix)
+	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
+}
+
+func TestMessageToPrefix6(t *testing.T) {
+	message := client.Message{
+		Id:         23,
+		ChatId:     25,
+		IsOutgoing: true,
+		ReplyTo: &client.MessageReplyToMessage{
+			ChatId: 41,
+			Quote: &client.TextQuote{
+				Text: &client.FormattedText{
+					Text: "tist\nuz\niz",
+				},
+			},
+			Origin: &client.MessageOriginHiddenUser{
+				SenderName: "ziz",
+			},
+		},
+	}
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "", false)
+	if prefix != "> 23 | reply: ziz @ unknown contact: TDlib instance is offline | tist uz iz" {
+		t.Errorf("Wrong prefix: %v", prefix)
+	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
+}
+
+func TestMessageToPrefix7(t *testing.T) {
+	message := client.Message{
+		Id:         23,
+		ChatId:     42,
+		IsOutgoing: true,
+		ReplyTo: &client.MessageReplyToMessage{
+			ChatId: 41,
+			Content: &client.MessageText{
+				Text: &client.FormattedText{
+					Text: "tist",
+				},
+			},
+			Origin: &client.MessageOriginChannel{
+				AuthorSignature: "zaz",
+			},
+		},
+	}
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "", false)
+	if prefix != "> 23 | reply:  (zaz) @ unknown contact: TDlib instance is offline | tist" {
+		t.Errorf("Wrong prefix: %v", prefix)
+	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
+}
+
+func TestMessageToPrefix8(t *testing.T) {
+	message := client.Message{
+		Id:         23,
+		ChatId:     42,
+		IsOutgoing: true,
+		ReplyTo: &client.MessageReplyToMessage{
+			ChatId: 41,
+			Content: &client.MessageText{
+				Text: &client.FormattedText{
+					Text: "tist",
+				},
+			},
+			Origin: &client.MessageOriginChannel{
+				AuthorSignature: "zuz",
+			},
+		},
+	}
+	prefix, gatewayReply := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "", true)
+	if prefix != "> 23" {
+		t.Errorf("Wrong prefix: %v", prefix)
+	}
+	if gatewayReply != nil {
+		t.Errorf("Reply is not nil: %v", gatewayReply)
+	}
+}
+
+func GetSenderIdEmpty(t *testing.T) {
+	message := client.Message{}
+	senderId := (&Client{}).getMessageSenderId(&message)
+	if senderId != 0 {
+		t.Errorf("Wrong sender id: %v", senderId)
+	}
+}
+
+func GetSenderIdUser(t *testing.T) {
+	message := client.Message{
+		SenderId: &client.MessageSenderUser{
+			UserId: 42,
+		},
+	}
+	senderId := (&Client{}).getMessageSenderId(&message)
+	if senderId != 42 {
+		t.Errorf("Wrong sender id: %v", senderId)
+	}
+}
+
+func GetSenderIdChat(t *testing.T) {
+	message := client.Message{
+		SenderId: &client.MessageSenderChat{
+			ChatId: -42,
+		},
+	}
+	senderId := (&Client{}).getMessageSenderId(&message)
+	if senderId != -42 {
+		t.Errorf("Wrong sender id: %v", senderId)
+	}
 }

xmpp/component.go

@@ -2,9 +2,12 @@ package xmpp
 
 import (
 	"github.com/pkg/errors"
+	"regexp"
+	"strconv"
 	"sync"
 	"time"
 
+	"dev.narayana.im/narayana/telegabber/badger"
 	"dev.narayana.im/narayana/telegabber/config"
 	"dev.narayana.im/narayana/telegabber/persistence"
 	"dev.narayana.im/narayana/telegabber/telegram"
@@ -20,18 +23,49 @@ var sessions map[string]*telegram.Client
 var db *persistence.SessionsYamlDB
 var sessionLock sync.Mutex
 
+const (
+	B  uint64 = 1
+	KB        = B << 10
+	MB        = KB << 10
+	GB        = MB << 10
+	TB        = GB << 10
+	PB        = TB << 10
+	EB        = PB << 10
+
+	maxUint64 uint64 = (1 << 64) - 1
+)
+
+var sizeRegex = regexp.MustCompile("\\A([0-9]+) ?([KMGTPE]?B?)\\z")
+
 // NewComponent starts a new component and wraps it in
 // a stream manager that you should start yourself
-func NewComponent(conf config.XMPPConfig, tc config.TelegramConfig) (*xmpp.StreamManager, *xmpp.Component, error) {
+func NewComponent(conf config.XMPPConfig, tc config.TelegramConfig, idsPath string, version string) (*xmpp.StreamManager, *xmpp.Component, error) {
 	var err error
 
 	gateway.Jid, err = stanza.NewJid(conf.Jid)
+	gateway.Version = version
 	if err != nil {
 		return nil, nil, err
 	}
+	if gateway.Jid.Resource == "" {
+		if tc.Tdlib.Client.DeviceModel != "" {
+			gateway.Jid.Resource = tc.Tdlib.Client.DeviceModel
+		} else {
+			gateway.Jid.Resource = "telegabber"
+		}
+	}
+
+	gateway.IdsDB = badger.IdsDBOpen(idsPath)
 
 	tgConf = tc
 
+	if tc.Content.Quota != "" {
+		gateway.StorageQuota, err = parseSize(tc.Content.Quota)
+		if err != nil {
+			log.Warnf("Error parsing the storage quota: %v; the cleaner is disabled", err)
+		}
+	}
+
 	options := xmpp.ComponentOptions{
 		TransportConfiguration: xmpp.TransportConfiguration{
 			Address: conf.Host + ":" + conf.Port,
@@ -80,10 +114,22 @@ func heartbeat(component *xmpp.Component) {
 	}
 	sessionLock.Unlock()
 
+	quotaLowThreshold := gateway.StorageQuota / 10 * 9
+
 	log.Info("Starting heartbeat queue")
 
 	// status updater thread
 	for {
+		gateway.StorageLock.Lock()
+		if quotaLowThreshold > 0 && tgConf.Content.Path != "" {
+			gateway.MeasureStorageSize(tgConf.Content.Path)
+
+			if gateway.CachedStorageSize > quotaLowThreshold {
+				gateway.CleanOldFiles(tgConf.Content.Path, quotaLowThreshold)
+			}
+		}
+		gateway.StorageLock.Unlock()
+
 		time.Sleep(60e9)
 		now := time.Now().Unix()
 
@@ -96,11 +142,24 @@ func heartbeat(component *xmpp.Component) {
 						chatID,
 						session.LastSeenStatus(delayedStatus.TimestampOnline),
 						"away",
+						true,
 					)
 					delete(session.DelayedStatuses, chatID)
 				}
 			}
 			session.DelayedStatusesLock.Unlock()
+
+			// shrink message id maps
+			session.MessageIdChangesLock.Lock()
+			for _, idsMap := range session.MessageIdChanges {
+				for oldMessageId, newId := range idsMap {
+					if newId.Ts < now - 60 {
+						newId.Unlock()
+						delete(idsMap, oldMessageId)
+					}
+				}
+			}
+			session.MessageIdChangesLock.Unlock()
 		}
 		sessionLock.Unlock()
 
@@ -121,6 +180,8 @@ func heartbeat(component *xmpp.Component) {
 			// it would be resolved on the next iteration
 			SaveSessions()
 		}
+
+		gateway.IdsDB.Gc()
 	}
 }
 
@@ -198,6 +259,53 @@ func Close(component *xmpp.Component) {
 	// save sessions
 	SaveSessions()
 
+	// flush the ids database
+	gateway.IdsDB.Close()
+
 	// close stream
 	component.Disconnect()
 }
+
+// based on https://github.com/c2h5oh/datasize/blob/master/datasize.go
+func parseSize(sSize string) (uint64, error) {
+	sizeParts := sizeRegex.FindStringSubmatch(sSize)
+
+	if len(sizeParts) > 2 {
+		numPart, err := strconv.ParseInt(sizeParts[1], 10, 64)
+		if err != nil {
+			return 0, err
+		}
+
+		var divisor uint64
+		val := uint64(numPart)
+
+		if len(sizeParts[2]) > 0 {
+			switch sizeParts[2][0] {
+			case 'B':
+				divisor = 1
+			case 'K':
+				divisor = KB
+			case 'M':
+				divisor = MB
+			case 'G':
+				divisor = GB
+			case 'T':
+				divisor = TB
+			case 'P':
+				divisor = PB
+			case 'E':
+				divisor = EB
+			}
+		}
+
+		if divisor == 0 {
+			return 0, &strconv.NumError{"Wrong suffix", sSize, strconv.ErrSyntax}
+		}
+		if val > maxUint64/divisor {
+			return 0, &strconv.NumError{"Overflow", sSize, strconv.ErrRange}
+		}
+		return val * divisor, nil
+	}
+
+	return 0, &strconv.NumError{"Not enough parts", sSize, strconv.ErrSyntax}
+}

xmpp/component_test.go

@@ -0,0 +1,47 @@
+package xmpp
+
+import (
+	"testing"
+)
+
+func TestParseSizeGarbage(t *testing.T) {
+	_, err := parseSize("abc")
+	if err == nil {
+		t.Error("abc should not be accepted")
+	}
+}
+
+func TestParseSizeAsphalt(t *testing.T) {
+	size, err := parseSize("2B")
+	if size != 2 {
+		t.Errorf("Error parsing two bytes: %v %v", size, err)
+	}
+}
+
+func TestParseSize9K(t *testing.T) {
+	size, err := parseSize("9 KB")
+	if size != 9216 {
+		t.Errorf("Error parsing 9K: %v %v", size, err)
+	}
+}
+
+func TestParseSizeBits(t *testing.T) {
+	size, err := parseSize("9 Kb")
+	if err == nil {
+		t.Errorf("Error parsing kilobits: %v %v", size, err)
+	}
+}
+
+func TestParseSizeEB(t *testing.T) {
+	size, err := parseSize("3EB")
+	if size != 3458764513820540928 {
+		t.Errorf("Error parsing exabytes: %v %v", size, err)
+	}
+}
+
+func TestParseSizeOverflow(t *testing.T) {
+	size, err := parseSize("314EB")
+	if err == nil {
+		t.Errorf("Overflow is not overflowing: %v %v", size, err)
+	}
+}

xmpp/extensions/extensions.go

@@ -2,6 +2,7 @@ package extensions
 
 import (
 	"encoding/xml"
+	"strconv"
 
 	"gosrc.io/xmpp/stanza"
 )
@@ -32,6 +33,7 @@ type IqVcardTemp struct {
 	N         IqVcardN
 	Tel       IqVcardTel
 	Photo     IqVcardPhoto
+	Desc      IqVcardDesc
 	ResultSet *stanza.ResultSet `xml:"set,omitempty"`
 }
 
@@ -104,6 +106,127 @@ type IqVcardPhotoBinval struct {
 	Text    string   `xml:",chardata"`
 }
 
+// IqVcardDesc is vCard/DESC
+type IqVcardDesc struct {
+	XMLName xml.Name `xml:"DESC"`
+	Text    string   `xml:",chardata"`
+}
+
+// Reply is from XEP-0461
+type Reply struct {
+	XMLName xml.Name `xml:"urn:xmpp:reply:0 reply"`
+	To      string   `xml:"to,attr"`
+	Id      string   `xml:"id,attr"`
+}
+
+// Fallback is from XEP-0428
+type Fallback struct {
+	XMLName xml.Name          `xml:"urn:xmpp:fallback:0 fallback"`
+	For     string            `xml:"for,attr"`
+	Body    []FallbackBody    `xml:"urn:xmpp:fallback:0 body"`
+	Subject []FallbackSubject `xml:"urn:xmpp:fallback:0 subject"`
+}
+
+// FallbackBody is from XEP-0428
+type FallbackBody struct {
+	XMLName xml.Name `xml:"urn:xmpp:fallback:0 body"`
+	Start   string   `xml:"start,attr"`
+	End     string   `xml:"end,attr"`
+}
+
+// FallbackSubject is from XEP-0428
+type FallbackSubject struct {
+	XMLName xml.Name `xml:"urn:xmpp:fallback:0 subject"`
+	Start   string   `xml:"start,attr"`
+	End     string   `xml:"end,attr"`
+}
+
+// CarbonReceived is from XEP-0280
+type CarbonReceived struct {
+	XMLName   xml.Name         `xml:"urn:xmpp:carbons:2 received"`
+	Forwarded stanza.Forwarded `xml:"urn:xmpp:forward:0 forwarded"`
+}
+
+// CarbonSent is from XEP-0280
+type CarbonSent struct {
+	XMLName   xml.Name         `xml:"urn:xmpp:carbons:2 sent"`
+	Forwarded stanza.Forwarded `xml:"urn:xmpp:forward:0 forwarded"`
+}
+
+// ComponentPrivilege is from XEP-0356
+type ComponentPrivilege1 struct {
+	XMLName   xml.Name         `xml:"urn:xmpp:privilege:1 privilege"`
+	Perms     []ComponentPerm  `xml:"perm"`
+	Forwarded stanza.Forwarded `xml:"urn:xmpp:forward:0 forwarded"`
+}
+
+// ComponentPrivilege is from XEP-0356
+type ComponentPrivilege2 struct {
+	XMLName   xml.Name         `xml:"urn:xmpp:privilege:2 privilege"`
+	Perms     []ComponentPerm  `xml:"perm"`
+	Forwarded stanza.Forwarded `xml:"urn:xmpp:forward:0 forwarded"`
+}
+
+// ComponentPerm is from XEP-0356
+type ComponentPerm struct {
+	XMLName xml.Name `xml:"perm"`
+	Access  string   `xml:"access,attr"`
+	Type    string   `xml:"type,attr"`
+	Push    bool     `xml:"push,attr"`
+}
+
+// ClientMessage is a jabber:client NS message compatible with Prosody's XEP-0356 implementation
+type ClientMessage struct {
+	XMLName xml.Name `xml:"jabber:client message"`
+	stanza.Attrs
+
+	Subject    string                `xml:"subject,omitempty"`
+	Body       string                `xml:"body,omitempty"`
+	Thread     string                `xml:"thread,omitempty"`
+	Error      stanza.Err            `xml:"error,omitempty"`
+	Extensions []stanza.MsgExtension `xml:",omitempty"`
+}
+
+// Replace is from XEP-0308
+type Replace struct {
+	XMLName xml.Name `xml:"urn:xmpp:message-correct:0 replace"`
+	Id      string   `xml:"id,attr"`
+}
+
+// QueryRegister is from XEP-0077
+type QueryRegister struct {
+	XMLName      xml.Name                 `xml:"jabber:iq:register query"`
+	Instructions string                   `xml:"instructions"`
+	Username     string                   `xml:"username"`
+	Registered   *QueryRegisterRegistered `xml:"registered"`
+	Remove       *QueryRegisterRemove     `xml:"remove"`
+	ResultSet    *stanza.ResultSet        `xml:"set,omitempty"`
+}
+
+// QueryRegisterRegistered is a child element from XEP-0077
+type QueryRegisterRegistered struct {
+	XMLName xml.Name `xml:"registered"`
+}
+
+// QueryRegisterRemove is a child element from XEP-0077
+type QueryRegisterRemove struct {
+	XMLName xml.Name `xml:"remove"`
+}
+
+// EntityTime is from XEP-0202
+type EntityTime struct {
+	XMLName   xml.Name          `xml:"urn:xmpp:time time"`
+	Tzo       string            `xml:"tzo"`
+	Utc       string            `xml:"utc"`
+	ResultSet *stanza.ResultSet `xml:"set,omitempty"`
+}
+
+// AttachTo is from XEP-0367
+type AttachTo struct {
+	XMLName xml.Name `xml:"urn:xmpp:message-attaching:1 attach-to"`
+	Id      string   `xml:"id,attr"`
+}
+
 // Namespace is a namespace!
 func (c PresenceNickExtension) Namespace() string {
 	return c.XMLName.Space
@@ -119,11 +242,89 @@ func (c IqVcardTemp) Namespace() string {
 	return c.XMLName.Space
 }
 
-// Namespace is a namespace!
+// GetSet getsets!
 func (c IqVcardTemp) GetSet() *stanza.ResultSet {
 	return c.ResultSet
 }
 
+// Namespace is a namespace!
+func (c Reply) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c Fallback) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c CarbonReceived) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c CarbonSent) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c ComponentPrivilege1) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c ComponentPrivilege2) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c Replace) Namespace() string {
+	return c.XMLName.Space
+}
+
+// Namespace is a namespace!
+func (c QueryRegister) Namespace() string {
+	return c.XMLName.Space
+}
+
+// GetSet getsets!
+func (c QueryRegister) GetSet() *stanza.ResultSet {
+	return c.ResultSet
+}
+
+// Namespace is a namespace!
+func (c EntityTime) Namespace() string {
+	return c.XMLName.Space
+}
+
+// GetSet getsets!
+func (c EntityTime) GetSet() *stanza.ResultSet {
+	return c.ResultSet
+}
+
+// Name is a packet name
+func (ClientMessage) Name() string {
+	return "message"
+}
+
+// Namespace is a namespace!
+func (c AttachTo) Namespace() string {
+	return c.XMLName.Space
+}
+
+// NewReplyFallback initializes a fallback range
+func NewReplyFallback(start uint64, end uint64) Fallback {
+	return Fallback{
+		For: "urn:xmpp:reply:0",
+		Body: []FallbackBody{
+			FallbackBody{
+				Start: strconv.FormatUint(start, 10),
+				End:   strconv.FormatUint(end, 10),
+			},
+		},
+	}
+}
+
 func init() {
 	// presence nick
 	stanza.TypeRegistry.MapExtension(stanza.PKTPresence, xml.Name{
@@ -142,4 +343,64 @@ func init() {
 		"vcard-temp",
 		"vCard",
 	}, IqVcardTemp{})
+
+	// reply
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:reply:0",
+		"reply",
+	}, Reply{})
+
+	// fallback
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:fallback:0",
+		"fallback",
+	}, Fallback{})
+
+	// carbon received
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:carbons:2",
+		"received",
+	}, CarbonReceived{})
+
+	// carbon sent
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:carbons:2",
+		"sent",
+	}, CarbonSent{})
+
+	// component privilege v1
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:privilege:1",
+		"privilege",
+	}, ComponentPrivilege1{})
+
+	// component privilege v2
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:privilege:2",
+		"privilege",
+	}, ComponentPrivilege2{})
+
+	// message edit
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:message-correct:0",
+		"replace",
+	}, Replace{})
+
+	// register query
+	stanza.TypeRegistry.MapExtension(stanza.PKTIQ, xml.Name{
+		"jabber:iq:register",
+		"query",
+	}, QueryRegister{})
+
+	// entity time
+	stanza.TypeRegistry.MapExtension(stanza.PKTIQ, xml.Name{
+		"urn:xmpp:time",
+		"time",
+	}, EntityTime{})
+
+	// attach-to
+	stanza.TypeRegistry.MapExtension(stanza.PKTMessage, xml.Name{
+		"urn:xmpp:message-attaching:1",
+		"attach-to",
+	}, AttachTo{})
 }

xmpp/gateway/gateway.go

@@ -2,17 +2,47 @@ package gateway
 
 import (
 	"encoding/xml"
+	"github.com/pkg/errors"
+	"strconv"
 	"strings"
 	"sync"
 
+	"dev.narayana.im/narayana/telegabber/badger"
 	"dev.narayana.im/narayana/telegabber/xmpp/extensions"
 
+	"github.com/google/uuid"
 	log "github.com/sirupsen/logrus"
 	"github.com/soheilhy/args"
 	"gosrc.io/xmpp"
 	"gosrc.io/xmpp/stanza"
 )
 
+type Reply struct {
+	Author string
+	Id     string
+	Start  uint64
+	End    uint64
+}
+
+type MarkerType byte
+
+const (
+	MarkerTypeReceived MarkerType = iota
+	MarkerTypeDisplayed
+)
+
+type marker struct {
+	Type MarkerType
+	Id   string
+}
+
+const NSNick string = "http://jabber.org/protocol/nick"
+const NodeVCard4 string = "urn:xmpp:vcard4"
+const NodeAvatarMetadata string = "urn:xmpp:avatar:metadata"
+const NodeAvatarMetadataNotify string = NodeAvatarMetadata + "+notify"
+const NodeAvatarData string = "urn:xmpp:avatar:data"
+const NSCommand string = "http://jabber.org/protocol/commands"
+
 // Queue stores presences to send later
 var Queue = make(map[string]*stanza.Presence)
 var QueueLock = sync.Mutex{}
@@ -20,16 +50,70 @@ var QueueLock = sync.Mutex{}
 // Jid stores the component's JID object
 var Jid *stanza.Jid
 
+// Version stores this software's version
+var Version string
+
+// IdsDB provides a disk-backed bidirectional dictionary of Telegram and XMPP ids
+var IdsDB badger.IdsDB
+
 // DirtySessions denotes that some Telegram session configurations
 // were changed and need to be re-flushed to the YamlDB
 var DirtySessions = false
 
+// MessageOutgoingPermissionVersion contains a XEP-0356 version to fake outgoing messages by foreign JIDs
+var MessageOutgoingPermissionVersion = 0
+
 // SendMessage creates and sends a message stanza
-func SendMessage(to string, from string, body string, component *xmpp.Component) {
+func SendMessage(to string, from string, body string, id string, component *xmpp.Component, reply *Reply, replaceId string, isCarbon, requestReceipt bool) {
+	sendMessageWrapper(to, from, body, id, component, reply, nil, "", replaceId, isCarbon, requestReceipt)
+}
+
+// SendServiceMessage creates and sends a simple message stanza from transport
+func SendServiceMessage(to string, body string, component *xmpp.Component) {
+	var id string
+	if uuid, err := uuid.NewRandom(); err == nil {
+		id = uuid.String()
+	}
+	sendMessageWrapper(to, "", body, id, component, nil, nil, "", "", false, false)
+}
+
+// SendTextMessage creates and sends a simple message stanza
+func SendTextMessage(to string, from string, body string, component *xmpp.Component) {
+	var id string
+	if uuid, err := uuid.NewRandom(); err == nil {
+		id = uuid.String()
+	}
+	sendMessageWrapper(to, from, body, id, component, nil, nil, "", "", false, false)
+}
+
+// SendMessageWithOOB creates and sends a message stanza with OOB URL
+func SendMessageWithOOB(to string, from string, body string, id string, component *xmpp.Component, reply *Reply, oob, replaceId string, isCarbon, requestReceipt bool) {
+	sendMessageWrapper(to, from, body, id, component, reply, nil, oob, replaceId, isCarbon, requestReceipt)
+}
+
+// SendMessageMarker creates and sends a message stanza with a XEP-0333 marker
+func SendMessageMarker(to string, from string, component *xmpp.Component, markerType MarkerType, markerId string) {
+	sendMessageWrapper(to, from, "", "", component, nil, &marker{
+		Type: markerType,
+		Id:   markerId,
+	}, "", "", false, false)
+}
+
+func sendMessageWrapper(to string, from string, body string, id string, component *xmpp.Component, reply *Reply, marker *marker, oob, replaceId string, isCarbon, requestReceipt bool) {
+	toJid, err := stanza.NewJid(to)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"to": to,
+		}).Error(errors.Wrap(err, "Invalid to JID!"))
+		return
+	}
+	bareTo := toJid.Bare()
+
 	componentJid := Jid.Full()
 
 	var logFrom string
 	var messageFrom string
+	var messageTo string
 	if from == "" {
 		logFrom = componentJid
 		messageFrom = componentJid
@@ -37,6 +121,12 @@ func SendMessage(to string, from string, body string, component *xmpp.Component)
 		logFrom = from
 		messageFrom = from + "@" + componentJid
 	}
+	if isCarbon {
+		messageTo = messageFrom
+		messageFrom = bareTo + "/" + Jid.Resource
+	} else {
+		messageTo = to
+	}
 
 	log.WithFields(log.Fields{
 		"from": logFrom,
@@ -46,12 +136,120 @@ func SendMessage(to string, from string, body string, component *xmpp.Component)
 	message := stanza.Message{
 		Attrs: stanza.Attrs{
 			From: messageFrom,
-			To:   to,
+			To:   messageTo,
 			Type: "chat",
+			Id:   id,
 		},
 		Body: body,
 	}
 
+	if oob != "" {
+		message.Extensions = append(message.Extensions, stanza.OOB{
+			URL: oob,
+		})
+	}
+	if reply != nil {
+		message.Extensions = append(message.Extensions, extensions.Reply{
+			To: reply.Author,
+			Id: reply.Id,
+		})
+		if reply.End > 0 {
+			message.Extensions = append(message.Extensions, extensions.NewReplyFallback(reply.Start, reply.End))
+		}
+	}
+	if marker != nil {
+		if marker.Type == MarkerTypeReceived {
+			message.Extensions = append(message.Extensions, stanza.MarkReceived{ID: marker.Id})
+		} else if marker.Type == MarkerTypeDisplayed {
+			message.Extensions = append(message.Extensions, stanza.MarkDisplayed{ID: marker.Id})
+			message.Extensions = append(message.Extensions, stanza.ReceiptReceived{ID: marker.Id})
+		}
+	}
+	if !isCarbon && toJid.Resource != "" {
+		message.Extensions = append(message.Extensions, stanza.HintNoCopy{})
+	}
+	if requestReceipt {
+		message.Extensions = append(message.Extensions, stanza.Markable{})
+	}
+	if replaceId != "" {
+		message.Extensions = append(message.Extensions, extensions.Replace{Id: replaceId})
+	}
+
+	if isCarbon {
+		carbonMessage := extensions.ClientMessage{
+			Attrs: stanza.Attrs{
+				From: bareTo,
+				To:   to,
+				Type: "chat",
+			},
+		}
+		carbonMessage.Extensions = append(carbonMessage.Extensions, extensions.CarbonSent{
+			Forwarded: stanza.Forwarded{
+				Stanza: extensions.ClientMessage(message),
+			},
+		})
+		privilegeMessage := stanza.Message{
+			Attrs: stanza.Attrs{
+				From: Jid.Bare(),
+				To:   toJid.Domain,
+			},
+		}
+		if MessageOutgoingPermissionVersion == 2 {
+			privilegeMessage.Extensions = append(privilegeMessage.Extensions, extensions.ComponentPrivilege2{
+				Forwarded: stanza.Forwarded{
+					Stanza: carbonMessage,
+				},
+			})
+		} else {
+			privilegeMessage.Extensions = append(privilegeMessage.Extensions, extensions.ComponentPrivilege1{
+				Forwarded: stanza.Forwarded{
+					Stanza: carbonMessage,
+				},
+			})
+		}
+		sendMessage(&privilegeMessage, component)
+	} else {
+		sendMessage(&message, component)
+	}
+}
+
+// SetNickname sets a new nickname for a contact
+func SetNickname(to string, from string, nickname string, component *xmpp.Component) {
+	componentJid := Jid.Bare()
+	messageFrom := from + "@" + componentJid
+
+	log.WithFields(log.Fields{
+		"from": from,
+		"to":   to,
+	}).Warn("Set nickname")
+
+	message := stanza.Message{
+		Attrs: stanza.Attrs{
+			From: messageFrom,
+			To:   to,
+			Type: "headline",
+		},
+		Extensions: []stanza.MsgExtension{
+			stanza.PubSubEvent{
+				EventElement: stanza.ItemsEvent{
+					Node: NSNick,
+					Items: []stanza.ItemEvent{
+						stanza.ItemEvent{
+							Any: &stanza.Node{
+								XMLName: xml.Name{Space: NSNick, Local: "nick"},
+								Content: nickname,
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	sendMessage(&message, component)
+}
+
+func sendMessage(message *stanza.Message, component *xmpp.Component) {
 	// explicit check, as marshalling is expensive
 	if log.GetLevel() == log.DebugLevel {
 		xmlMessage, err := xml.Marshal(message)
@@ -197,6 +395,20 @@ func SendPresence(component *xmpp.Component, to string, args ...args.V) error {
 	return nil
 }
 
+// SPAppendFrom appends numeric from and resource to varargs
+func SPAppendFrom(oldArgs []args.V, id int64) []args.V {
+	newArgs := append(oldArgs, SPFrom(strconv.FormatInt(id, 10)))
+	newArgs = append(newArgs, SPResource(Jid.Resource))
+	return newArgs
+}
+
+// SimplePresence crafts simple presence varargs
+func SimplePresence(from int64, typ string) []args.V {
+	args := []args.V{SPType(typ)}
+	args = SPAppendFrom(args, from)
+	return args
+}
+
 // ResumableSend tries to resume the connection once and sends the packet again
 func ResumableSend(component *xmpp.Component, packet stanza.Packet) error {
 	err := component.Send(packet)
@@ -213,3 +425,64 @@ func ResumableSend(component *xmpp.Component, packet stanza.Packet) error {
 	}
 	return err
 }
+
+// SubscribeToTransport ensures a two-way subscription to the transport
+func SubscribeToTransport(component *xmpp.Component, jid string) {
+	SendPresence(component, jid, SPType("subscribe"))
+	SendPresence(component, jid, SPType("subscribed"))
+}
+
+// SplitJID tokenizes a JID string to bare JID and resource
+func SplitJID(from string) (string, string, bool) {
+	fromJid, err := stanza.NewJid(from)
+	if err != nil {
+		log.WithFields(log.Fields{
+			"from": from,
+		}).Error(errors.Wrap(err, "Invalid from JID!"))
+		return "", "", false
+	}
+	return fromJid.Bare(), fromJid.Resource, true
+}
+
+// SendPubSubAvatarNotification encourages clients to fetch an avatar
+func SendPubSubAvatarNotification(component *xmpp.Component, jid string, chatId int64, sha1 string, size int64) {
+	info := stanza.Node{
+		XMLName: xml.Name{Local: "info"},
+		Attrs: []xml.Attr{
+			xml.Attr{Name: xml.Name{Local: "bytes"}, Value: strconv.FormatInt(size, 10)},
+			xml.Attr{Name: xml.Name{Local: "height"}, Value: "160"},
+			xml.Attr{Name: xml.Name{Local: "id"}, Value: sha1},
+			xml.Attr{Name: xml.Name{Local: "type"}, Value: "image/jpeg"},
+			xml.Attr{Name: xml.Name{Local: "width"}, Value: "160"},
+		},
+	}
+	log.WithFields(log.Fields{
+		"chatId": chatId,
+	}).Debugf("%#v", info)
+
+	event := &stanza.PubSubEvent{
+		EventElement: &stanza.ItemsEvent{
+			Node: NodeAvatarMetadata,
+			Items: []stanza.ItemEvent{
+				stanza.ItemEvent{
+					Id: sha1,
+					Any: &stanza.Node{
+						XMLName: xml.Name{Local: "metadata", Space: NodeAvatarMetadata},
+						Nodes:   []stanza.Node{info},
+					},
+				},
+			},
+		},
+	}
+
+	message := stanza.Message{
+		Attrs: stanza.Attrs{
+			From: strconv.FormatInt(chatId, 10) + "@" + Jid.Bare(),
+			To:   jid,
+			Type: stanza.MessageTypeHeadline,
+		},
+		Extensions: []stanza.MsgExtension{event},
+	}
+
+	_ = ResumableSend(component, message)
+}

xmpp/gateway/storage.go

@@ -0,0 +1,90 @@
+package gateway
+
+import (
+	"io/ioutil"
+	"os"
+	"sort"
+	"sync"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// StorageQuota is a value from config parsed to bytes number
+var StorageQuota uint64
+
+// CachedStorageSize estimates the storage size between full rescans
+var CachedStorageSize uint64
+var StorageLock = sync.Mutex{}
+
+// MeasureStorageSize replaces the estimated storage size with relevant data from the filesystem
+func MeasureStorageSize(path string) {
+	dents, err := ioutil.ReadDir(path)
+	if err != nil {
+		return
+	}
+
+	var total uint64
+	for _, fi := range dents {
+		if !fi.IsDir() {
+			total += uint64(fi.Size())
+		}
+	}
+
+	if total != CachedStorageSize {
+		if CachedStorageSize > 0 {
+			log.Warnf("Correcting cached storage size: was %v, actually %v", CachedStorageSize, total)
+		}
+		CachedStorageSize = total
+	}
+}
+
+// CleanOldFiles purges the oldest files in a directory that exceed the limit
+func CleanOldFiles(path string, limit uint64) {
+	dents, err := ioutil.ReadDir(path)
+	if err != nil {
+		return
+	}
+
+	var total uint64
+	for _, fi := range dents {
+		if !fi.IsDir() {
+			total += uint64(fi.Size())
+		}
+	}
+
+	// sort by time
+	sort.Slice(dents, func(i int, j int) bool {
+		return dents[i].ModTime().Before(dents[j].ModTime())
+	})
+
+	// purge
+	if total > limit {
+		toPurge := total - limit
+
+		var purgedAmount uint64
+		var purgedCount uint64
+
+		for _, fi := range dents {
+			if !fi.IsDir() {
+				err = os.Remove(path + string(os.PathSeparator) + fi.Name())
+				if err != nil {
+					log.Errorf("Couldn't remove %v: %v", fi.Name(), err)
+					continue
+				}
+
+				purgedAmount += uint64(fi.Size())
+				purgedCount += 1
+				if purgedAmount >= toPurge {
+					break
+				}
+			}
+		}
+
+		log.Infof("Cleaned %v bytes of %v old files", purgedAmount, purgedCount)
+		if CachedStorageSize > purgedAmount {
+			CachedStorageSize -= purgedAmount
+		} else {
+			CachedStorageSize = 0
+		}
+	}
+}

xmpp/loginwizard.go

@@ -0,0 +1,101 @@
+package xmpp
+
+import (
+	"fmt"
+
+	"dev.narayana.im/narayana/telegabber/telegram"
+	"dev.narayana.im/narayana/telegabber/xmpp/gateway"
+
+	log "github.com/sirupsen/logrus"
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+)
+
+func loginWizardPayload(bare string, requestForm *stanza.Form, resource string) (payload *stanza.Command, cancelSend bool, returnSession *telegram.Client) {
+	payload = &stanza.Command{
+		SessionId: "loginwizard",
+		Node:      "loginwizard",
+	}
+
+	session, ok := sessions[bare]
+	if ok {
+		returnSession = session
+
+		if requestForm == nil {
+			session.StartLoginWizard(false)
+			cancelSend = true
+		} else {
+			if len(requestForm.Fields) != 1 {
+				setCommandPayloadError(payload, "Hey, don't tinker with the form!")
+				return
+			}
+			field := requestForm.Fields[0]
+			if field != nil {
+				if len(field.ValuesList) < 1 {
+					setCommandPayloadError(payload, "No value")
+					return
+				}
+				switch field.Var {
+				case "login", "code", "password":
+				default:
+					setCommandPayloadError(payload, "Unknown field")
+					return
+				}
+
+				session.StartLoginWizard(true)
+				response, success := session.ProcessTransportCommand(fmt.Sprintf("/%v %v", field.Var, field.ValuesList[0]), resource)
+				if !success {
+					setCommandPayloadError(payload, response)
+					session.StopLoginWizard()
+					return
+				}
+
+				cancelSend = true
+			}
+		}
+	} else {
+		setCommandPayloadError(payload, fmt.Sprintf("Session is not initialized, add the transport (%v) to contacts first", gateway.Jid.Bare()))
+	}
+
+	return
+}
+
+func sendLoginWizardResponse(component *xmpp.Component, answer *stanza.IQ, session *telegram.Client) {
+	payload := &stanza.Command{
+		SessionId: "loginwizard",
+		Node:      "loginwizard",
+	}
+
+	nextStage := "login"
+	if session != nil {
+		nextStage = session.GetLoginWizardNextStage()
+	}
+	log.Debugf("nextStage: %v", nextStage)
+
+	if nextStage == "cancel" {
+		setCommandPayloadError(payload, "Cancelled")
+		session.StopLoginWizard()
+	} else if nextStage == "success" {
+		payload.Status = stanza.CommandStatusCompleted
+		session.StopLoginWizard()
+	} else {
+		required := ""
+		form := stanza.Form{
+			Type:  stanza.FormTypeForm,
+			Title: "Login Wizard",
+			Fields: []*stanza.Field{
+				&stanza.Field{
+					Var:      nextStage,
+					Label:    nextStage,
+					Required: &required,
+				},
+			},
+		}
+		payload.Status = stanza.CommandStatusExecuting
+		payload.CommandElements = append(payload.CommandElements, &form)
+	}
+
+	answer.Payload = payload
+
+	gateway.ResumableSend(component, answer)
+}