Merge branch 'master' into muc

.gitignore

@@ -3,3 +3,4 @@ telegabber
 sessions/
 session.dat
 session.dat.new
+release/

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/telegabber /usr/local/bin/
+ENTRYPOINT ["/usr/local/bin/telegabber"]
+
+FROM scratch AS binaries
+COPY --from=telegabber /usr/local/bin/telegabber /

Makefile

@@ -1,10 +1,18 @@
 .PHONY: all test
 
+COMMIT := $(shell git rev-parse --short HEAD)
+TD_COMMIT := "8517026415e75a8eec567774072cbbbbb52376c1"
+VERSION := "v2.0.0-dev"
+MAKEOPTS := "-j4"
+
 all:
-	go build -o telegabber
+	go build -ldflags "-X main.commit=${COMMIT}" -o telegabber
 
 test:
-	go test -v ./config ./ ./telegram ./xmpp ./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 .

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")
+	}
+}

go.mod

@@ -1,10 +1,10 @@
 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/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 +13,25 @@ require (
 	gosrc.io/xmpp v0.5.2-0.20211214110136-5f99e1cd06e1
 )
 
+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/google/uuid v1.1.1 // 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 v0.0.0-20220708184440-35d9cd68e55f
+replace github.com/zelenin/go-tdlib => dev.narayana.im/narayana/go-tdlib v0.0.0-20230730021136-47da33180615

go.sum

@@ -1,36 +1,35 @@
-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=
+dev.narayana.im/narayana/go-tdlib v0.0.0-20230730021136-47da33180615/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 v0.0.0-20220708184440-35d9cd68e55f h1:aT50UsPH1dLje9CCAquRRhr7I9ZvL3kQU6WIWTe8PZ0=
 dev.narayana.im/narayana/go-xmpp v0.0.0-20220708184440-35d9cd68e55f/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
 github.com/Arman92/go-tdlib v0.0.0-20191002071913-526f4e1d15f7 h1:GbV1Lv3lVHsSeKAqPTBem72OCsGjXntW4jfJdXciE+w=
 github.com/Arman92/go-tdlib v0.0.0-20191002071913-526f4e1d15f7/go.mod h1:ZzkRfuaFj8etIYMj/ECtXtgfz72RE6U+dos27b3XIwk=
+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=
+github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/bodqhrohro/go-tdlib v0.1.2-0.20191121200156-e826071d3317 h1:+mv4FwWXl8hTa7PrhekwVzPknH+rHqB60jIPBi2XqI8=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
-github.com/bodqhrohro/go-tdlib v0.1.2-0.20191121200156-e826071d3317/go.mod h1:Xs8fXbk5n7VaPyrSs9DP7QYoBScWYsjX+lUcWmx1DIU=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/bodqhrohro/go-tdlib v0.1.2-0.20191121233100-48d2382034fb h1:y5PnjdAnNVS0q8xuwjm3TxBfLriJmykQdoGiyYZB3s0=
-github.com/bodqhrohro/go-tdlib v0.1.2-0.20191121233100-48d2382034fb/go.mod h1:Xs8fXbk5n7VaPyrSs9DP7QYoBScWYsjX+lUcWmx1DIU=
-github.com/bodqhrohro/go-tdlib v0.4.4-0.20211229000346-ee6018be8ec0 h1:9ysLk2hG2q0NeNdX6StzS+4fTAG2FeZJYKKegCuB4q4=
-github.com/bodqhrohro/go-tdlib v0.4.4-0.20211229000346-ee6018be8ec0/go.mod h1:sOdXFpJ3zn6RHRc8aNVkJYALHpoplwBgMwIbRCYABIg=
-github.com/bodqhrohro/go-xmpp v0.1.4-0.20191106203535-f3b463f3b26c h1:LzcQyE+Gs+0kAbpnPAUD68FvUCieKZip44URAmH70PI=
-github.com/bodqhrohro/go-xmpp v0.1.4-0.20191106203535-f3b463f3b26c/go.mod h1:fWixaMaFvx8cxXcJVJ5kU9csMeD/JN8on7ybassU8rY=
-github.com/bodqhrohro/go-xmpp v0.2.1-0.20191105232737-9abd5be0aa1b h1:9BLd/SNO4JJZLRl1Qb1v9mNivIlHuwHDe2c8hQvBxFA=
-github.com/bodqhrohro/go-xmpp v0.2.1-0.20191105232737-9abd5be0aa1b/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
-github.com/bodqhrohro/go-xmpp v0.2.1-0.20211205194122-f8c4ecb59d8b h1:rTK55SNCBmssyRgNAweVwVVfuoRstI8RbL+8Ys/RzxE=
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@@ -40,25 +39,43 @@ github.com/go-interpreter/wagon v0.6.0/go.mod h1:5+b/MBYkclRZngKF5s6qrgWxSLgE9F5
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@@ -74,8 +91,9 @@ github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
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 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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+golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190306220234-b354f8bf4d9e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20190618155005-516e3c20635f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190712062909-fae7ac547cb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190927073244-c990c680b611 h1:q9u40nxWT5zRClI/uU9dHCiYGottAg6Nzz4YUQyHxdA=
 golang.org/x/sys v0.0.0-20190927073244-c990c680b611/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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+golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 h1:SvFZT6jyqRaOeXpc5h/JSfZenJ2O330aBsf7JfSUXmQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190920225731-5eefd052ad72/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 h1:9zdDQZ7Thm29KFXgAX/+yaf3eVbP7djjWp/dXAppNCc=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
@@ -138,12 +203,9 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-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=
-gosrc.io/xmpp v0.5.2-0.20211214110136-5f99e1cd06e1/go.mod h1:L3NFMqYOxyLz3JGmgFyWf7r9htE91zVGiK40oW4RwdY=
 gotest.tools v2.1.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 gotest.tools/gotestsum v0.3.5/go.mod h1:Mnf3e5FUzXbkCfynWBGOwLssY7gTQgCHObK9tMpAriY=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 mvdan.cc/sh v2.6.4+incompatible/go.mod h1:IeeQbZq+x2SUGBensq/jge5lLQbS3XT2ktyp3wrt4x8=
 nhooyr.io/websocket v1.6.5 h1:8TzpkldRfefda5JST+CnOH135bzVPz5uzfn/AF+gVKg=
 nhooyr.io/websocket v1.6.5/go.mod h1:F259lAzPRAH0htX2y3ehpJe09ih1aSHN7udWki1defY=

persistence/sessions.go

@@ -40,6 +40,9 @@ type Session struct {
 	RawMessages bool   `yaml:":rawmessages"`
 	AsciiArrows bool   `yaml:":asciiarrows"`
 	MUC         bool   `yaml:":muc"`
+	OOBMode     bool   `yaml:":oobmode"`
+	Carbons     bool   `yaml:":carbons"`
+	HideIds     bool   `yaml:":hideids"`
 }
 
 var configKeys = []string{
@@ -48,6 +51,9 @@ var configKeys = []string{
 	"rawmessages",
 	"asciiarrows",
 	"muc",
+	"oobmode",
+	"carbons",
+	"hideids",
 }
 
 var sessionDB *SessionsYamlDB
@@ -122,6 +128,12 @@ func (s *Session) Get(key string) (string, error) {
 		return fromBool(s.AsciiArrows), nil
 	case "muc":
 		return fromBool(s.MUC), nil
+	case "oobmode":
+		return fromBool(s.OOBMode), nil
+	case "carbons":
+		return fromBool(s.Carbons), nil
+	case "hideids":
+		return fromBool(s.HideIds), nil
 	}
 
 	return "", errors.New("Unknown session property")
@@ -172,6 +184,27 @@ func (s *Session) Set(key string, value string) (string, error) {
 		}
 		s.MUC = 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
 	}
 
 	return "", errors.New("Unknown session property")

persistence/sessions_test.go

@@ -48,6 +48,7 @@ func TestSessionToMap(t *testing.T) {
 		Timezone:    "klsf",
 		RawMessages: true,
 		MUC:         true,
+		OOBMode:     true,
 	}
 	m := session.ToMap()
 	sample := map[string]string{
@@ -56,6 +57,9 @@ func TestSessionToMap(t *testing.T) {
 		"muc":         "true",
 		"rawmessages": "true",
 		"asciiarrows": "false",
+		"oobmode":     "true",
+		"carbons":     "false",
+		"hideids":     "false",
 	}
 	if !reflect.DeepEqual(m, sample) {
 		t.Errorf("Map does not match the sample: %v", m)

telegabber.go

@@ -15,7 +15,8 @@ import (
 	goxmpp "gosrc.io/xmpp"
 )
 
-const version string = "1.2.1"
+var version string = "2.0.0-dev"
+var commit string
 
 var sm *goxmpp.StreamManager
 var component *goxmpp.Component
@@ -25,11 +26,17 @@ 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()
 
@@ -55,7 +62,9 @@ func main() {
 
 	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)
 	if err != nil {
 		log.Fatal(err)
 	}

telegram/cache/cache.go

@@ -133,3 +133,13 @@ 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

@@ -2,6 +2,7 @@ package telegram
 
 import (
 	"github.com/pkg/errors"
+	"hash/maphash"
 	"path/filepath"
 	"strconv"
 	"sync"
@@ -44,7 +45,7 @@ type DelayedStatus struct {
 type Client struct {
 	client     *client.Client
 	authorizer *clientAuthorizer
-	parameters *client.TdlibParameters
+	parameters *client.SetTdlibParametersRequest
 	options    []client.Option
 	me         *client.User
 
@@ -52,6 +53,7 @@ type Client struct {
 	jid       string
 	Session   *persistence.Session
 	resources map[string]bool
+	outbox    map[string]string
 	content   *config.TelegramContentConfig
 	cache     *cache.Cache
 	online    bool
@@ -59,13 +61,22 @@ type Client struct {
 	DelayedStatuses     map[int64]*DelayedStatus
 	DelayedStatusesLock sync.Mutex
 
-	locks clientLocks
+	lastMsgHashes map[int64]uint64
+	msgHashSeed   maphash.Seed
+
+	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
+	lastMsgHashesLock  sync.Mutex
+
+	authorizerReadLock  sync.Mutex
+	authorizerWriteLock sync.Mutex
 }
 
 // NewClient instantiates a Telegram App
@@ -92,7 +103,7 @@ 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),
@@ -121,10 +132,13 @@ func NewClient(conf config.TelegramConfig, jid string, component *xmpp.Component
 		jid:             jid,
 		Session:         session,
 		resources:       make(map[string]bool),
+		outbox:          make(map[string]string),
 		content:         &conf.Content,
 		cache:           cache.NewCache(),
 		options:         options,
 		DelayedStatuses: make(map[int64]*DelayedStatus),
+		lastMsgHashes:   make(map[int64]uint64),
+		msgHashSeed:     maphash.MakeSeed(),
 		locks: clientLocks{
 			chatMessageLocks: make(map[int64]*sync.Mutex),
 		},

telegram/commands.go

@@ -15,11 +15,11 @@ import (
 )
 
 const notEnoughArguments string = "Not enough arguments"
-const telegramNotInitialized string = "Telegram connection is not initialized yet"
+const TelegramNotInitialized string = "Telegram connection is not initialized yet"
+const TelegramAuthDone string = "Authorization is done already"
 const notOnline string = "Not online"
 
-var permissionsAdmin = client.ChatMemberStatusAdministrator{
+var permissionsAdmin = client.ChatAdministratorRights{
-	CanBeEdited:        true,
 	CanChangeInfo:      true,
 	CanPostMessages:    true,
 	CanEditMessages:    true,
@@ -30,20 +30,27 @@ var permissionsAdmin = client.ChatMemberStatusAdministrator{
 	CanPromoteMembers:  false,
 }
 var permissionsMember = client.ChatPermissions{
-	CanSendMessages:       true,
+	CanSendBasicMessages:  true,
-	CanSendMediaMessages:  true,
+	CanSendAudios:         true,
+	CanSendDocuments:      true,
+	CanSendPhotos:         true,
+	CanSendVideos:         true,
+	CanSendVideoNotes:     true,
+	CanSendVoiceNotes:     true,
 	CanSendPolls:          true,
 	CanSendOtherMessages:  true,
 	CanAddWebPagePreviews: true,
 	CanChangeInfo:         true,
 	CanInviteUsers:        true,
 	CanPinMessages:        true,
+	CanManageTopics:       true,
 }
 var permissionsReadonly = client.ChatPermissions{}
 
 var transportCommands = map[string]command{
 	"login":       command{"phone", "sign in"},
 	"logout":      command{"", "sign out"},
+	"cancelauth":  command{"", "quit the signin wizard"},
 	"code":        command{"", "check one-time code"},
 	"password":    command{"", "check 2fa password"},
 	"setusername": command{"", "update @username"},
@@ -52,6 +59,10 @@ var transportCommands = map[string]command{
 	"setpassword": command{"[old] [new]", "set or remove password"},
 	"config":      command{"[param] [value]", "view or update configuration options"},
 	"report":      command{"[chat] [comment]", "report a chat by id or @username"},
+	"add":         command{"@username", "add @username to your chat list"},
+	"join":        command{"https://t.me/invite_link", "join to chat via invite link or @publicname"},
+	"supergroup":  command{"title description", "create new supergroup «title» with «description»"},
+	"channel":     command{"title description", "create new channel «title» with «description»"},
 }
 
 var chatCommands = map[string]command{
@@ -60,6 +71,7 @@ var chatCommands = map[string]command{
 	"silent":     command{"message", "send a message without sound"},
 	"schedule":   command{"{online | 2006-01-02T15:04:05 | 15:04:05} message", "schedules a message either to timestamp or to whenever the user goes online"},
 	"forward":    command{"message_id target_chat", "forwards a message"},
+	"vcard":      command{"", "print vCard as text"},
 	"add":        command{"@username", "add @username to your chat list"},
 	"join":       command{"https://t.me/invite_link", "join to chat via invite link or @publicname"},
 	"group":      command{"title", "create groupchat «title» with current user"},
@@ -168,6 +180,10 @@ func rawCmdArguments(cmdline string, start uint8) string {
 	return ""
 }
 
+func keyValueString(key, value string) string {
+	return fmt.Sprintf("%s: %s", key, value)
+}
+
 func (c *Client) unsubscribe(chatID int64) error {
 	return gateway.SendPresence(
 		c.xmpp,
@@ -179,11 +195,17 @@ func (c *Client) unsubscribe(chatID int64) error {
 
 func (c *Client) sendMessagesReverse(chatID int64, messages []*client.Message) {
 	for i := len(messages) - 1; i >= 0; i-- {
+		message := messages[i]
+		reply, _ := c.getMessageReply(message)
+
 		gateway.SendMessage(
 			c.jid,
 			strconv.FormatInt(chatID, 10),
-			c.formatMessage(0, 0, false, messages[i]),
+			c.formatMessage(0, 0, false, message),
+			strconv.FormatInt(message.Id, 10),
 			c.xmpp,
+			reply,
+			false,
 		)
 	}
 }
@@ -215,7 +237,7 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) string
 	switch cmd {
 	case "login", "code", "password":
 		if cmd == "login" && c.Session.Login != "" {
-			return ""
+			return "Phone number already provided, use /cancelauth to start over"
 		}
 
 		if len(args) < 1 {
@@ -223,36 +245,35 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) string
 		}
 
 		if cmd == "login" {
-			wasSessionLoginEmpty := c.Session.Login == ""
+			err := c.TryLogin(resource, args[0])
-			c.Session.Login = args[0]
+			if err != nil {
-
+				return err.Error()
-			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: the command just needs to be resent again
-				time.Sleep(1e5)
 			}
-		}
 
-		if c.authorizer == nil {
+			c.locks.authorizerWriteLock.Lock()
-			return telegramNotInitialized
+			defer c.locks.authorizerWriteLock.Unlock()
-		}
 
-		switch cmd {
-		// sign in
-		case "login":
 			c.authorizer.PhoneNumber <- args[0]
-		// check auth code
+		} else {
-		case "code":
+			c.locks.authorizerWriteLock.Lock()
-			c.authorizer.Code <- args[0]
+			defer c.locks.authorizerWriteLock.Unlock()
-		// check auth password
+
-		case "password":
+			if c.authorizer == nil {
-			c.authorizer.Password <- args[0]
+				return TelegramNotInitialized
+			}
+
+			if c.authorizer.isClosed {
+				return TelegramAuthDone
+			}
+
+			switch cmd {
+			// check auth code
+			case "code":
+				c.authorizer.Code <- args[0]
+			// check auth password
+			case "password":
+				c.authorizer.Password <- args[0]
+			}
 		}
 	// sign out
 	case "logout":
@@ -271,6 +292,13 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) string
 		}
 
 		c.Session.Login = ""
+	// cancel auth
+	case "cancelauth":
+		if c.Online() {
+			return "Not allowed when online, use /logout instead"
+		}
+		c.cancelAuth()
+		return "Cancelled"
 	// set @username
 	case "setusername":
 		if !c.Online() {
@@ -290,25 +318,36 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) string
 		}
 	// set My Name
 	case "setname":
-		if !c.Online() {
-			return notOnline
-		}
-
 		var firstname string
 		var lastname string
 		if len(args) > 0 {
 			firstname = args[0]
 		}
+		if firstname == "" {
+			return "The name should contain at least one character"
+		}
 		if len(args) > 1 {
-			lastname = args[1]
+			lastname = rawCmdArguments(cmdline, 1)
 		}
 
-		_, err := c.client.SetName(&client.SetNameRequest{
+		c.locks.authorizerWriteLock.Lock()
-			FirstName: firstname,
+		if c.authorizer != nil && !c.authorizer.isClosed {
-			LastName:  lastname,
+			c.authorizer.FirstName <- firstname
-		})
+			c.authorizer.LastName <- lastname
-		if err != nil {
+			c.locks.authorizerWriteLock.Unlock()
-			return errors.Wrap(err, "Couldn't set name").Error()
+		} else {
+			c.locks.authorizerWriteLock.Unlock()
+			if !c.Online() {
+				return notOnline
+			}
+
+			_, err := c.client.SetName(&client.SetNameRequest{
+				FirstName: firstname,
+				LastName:  lastname,
+			})
+			if err != nil {
+				return errors.Wrap(err, "Couldn't set name").Error()
+			}
 		}
 	// set About
 	case "setbio":
@@ -344,6 +383,10 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) string
 		}
 	case "config":
 		if len(args) > 1 {
+			if gateway.MessageOutgoingPermissionVersion == 0 && args[0] == "carbons" && args[1] == "true" {
+				return "The server did not allow to enable carbons"
+			}
+
 			value, err := c.Session.Set(args[0], args[1])
 			if err != nil {
 				return err.Error()
@@ -387,6 +430,14 @@ func (c *Client) ProcessTransportCommand(cmdline string, resource string) string
 		} else {
 			return "Reported"
 		}
+	case "add":
+		return c.cmdAdd(args)
+	case "join":
+		return c.cmdJoin(args)
+	case "supergroup":
+		return c.cmdSupergroup(args, cmdline)
+	case "channel":
+		return c.cmdChannel(args, cmdline)
 	case "help":
 		return helpString(helpTypeTransport)
 	}
@@ -463,14 +514,17 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 			return "Last message is empty", true
 		}
 
-		content := c.ProcessOutgoingMessage(0, rawCmdArguments(cmdline, 0), "")
+		content := c.PrepareOutgoingMessageContent(rawCmdArguments(cmdline, 0))
 
 		if content != nil {
-			c.client.EditMessageText(&client.EditMessageTextRequest{
+			_, err = c.client.EditMessageText(&client.EditMessageTextRequest{
 				ChatId:              chatID,
 				MessageId:           message.Id,
 				InputMessageContent: content,
 			})
+			if err != nil {
+				return "Message editing error", true
+			}
 		} else {
 			return "Message processing error", true
 		}
@@ -480,7 +534,7 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 			return "Not enough arguments", true
 		}
 
-		content := c.ProcessOutgoingMessage(0, rawCmdArguments(cmdline, 0), "")
+		content := c.PrepareOutgoingMessageContent(rawCmdArguments(cmdline, 0))
 
 		if content != nil {
 			_, err := c.client.SendMessage(&client.SendMessageRequest{
@@ -559,7 +613,7 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 			}
 		}
 
-		content := c.ProcessOutgoingMessage(0, rawCmdArguments(cmdline, 1), "")
+		content := c.PrepareOutgoingMessageContent(rawCmdArguments(cmdline, 1))
 
 		if content != nil {
 			_, err := c.client.SendMessage(&client.SendMessageRequest{
@@ -606,80 +660,33 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 				c.ProcessIncomingMessage(targetChatId, message)
 			}
 		}
+	// print vCard
+	case "vcard":
+		info, err := c.GetVcardInfo(chatID)
+		if err != nil {
+			return err.Error(), true
+		}
+		_, link := c.PermastoreFile(info.Photo, true)
+		entries := []string{
+			keyValueString("Chat title", info.Fn),
+			keyValueString("Photo", link),
+			keyValueString("Usernames", c.usernamesToString(info.Nicknames)),
+			keyValueString("Full name", info.Given+" "+info.Family),
+			keyValueString("Phone number", info.Tel),
+		}
+		return strings.Join(entries, "\n"), true
 	// add @contact
 	case "add":
-		if len(args) < 1 {
+		return c.cmdAdd(args), true
-			return notEnoughArguments, true
-		}
-
-		chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
-			Username: args[0],
-		})
-		if err != nil {
-			return err.Error(), true
-		}
-		if chat == nil {
-			return "No error, but chat is nil", true
-		}
-
-		c.subscribeToID(chat.Id, chat)
 	// join https://t.me/publichat or @publicchat
 	case "join":
-		if len(args) < 1 {
+		return c.cmdJoin(args), true
-			return notEnoughArguments, true
-		}
-
-		if strings.HasPrefix(args[0], "@") {
-			chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
-				Username: args[0],
-			})
-			if err != nil {
-				return err.Error(), true
-			}
-			if chat == nil {
-				return "No error, but chat is nil", true
-			}
-			_, err = c.client.JoinChat(&client.JoinChatRequest{
-				ChatId: chat.Id,
-			})
-			if err != nil {
-				return err.Error(), true
-			}
-		} else {
-			_, err := c.client.JoinChatByInviteLink(&client.JoinChatByInviteLinkRequest{
-				InviteLink: args[0],
-			})
-			if err != nil {
-				return err.Error(), true
-			}
-		}
 	// create new supergroup
 	case "supergroup":
-		if len(args) < 1 {
+		return c.cmdSupergroup(args, cmdline), true
-			return notEnoughArguments, true
-		}
-
-		_, err := c.client.CreateNewSupergroupChat(&client.CreateNewSupergroupChatRequest{
-			Title:       args[0],
-			Description: rawCmdArguments(cmdline, 1),
-		})
-		if err != nil {
-			return err.Error(), true
-		}
 	// create new channel
 	case "channel":
-		if len(args) < 1 {
+		return c.cmdChannel(args, cmdline), true
-			return notEnoughArguments, true
-		}
-
-		_, err := c.client.CreateNewSupergroupChat(&client.CreateNewSupergroupChatRequest{
-			Title:       args[0],
-			Description: rawCmdArguments(cmdline, 1),
-			IsChannel:   true,
-		})
-		if err != nil {
-			return err.Error(), true
-		}
 	// create new secret chat with current user
 	case "secret":
 		_, err := c.client.CreateNewSecretChat(&client.CreateNewSecretChatRequest{
@@ -880,7 +887,10 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 		}
 
 		// clone the permissions
-		status := permissionsAdmin
+		status := client.ChatMemberStatusAdministrator{
+			CanBeEdited: true,
+			Rights:      &permissionsAdmin,
+		}
 
 		if len(args) > 1 {
 			status.CustomTitle = args[1]
@@ -930,9 +940,9 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 				return "Invalid TTL", true
 			}
 		}
-		_, err = c.client.SetChatMessageTtl(&client.SetChatMessageTtlRequest{
+		_, err = c.client.SetChatMessageAutoDeleteTime(&client.SetChatMessageAutoDeleteTimeRequest{
-			ChatId: chatID,
+			ChatId:                chatID,
-			Ttl:    int32(ttl),
+			MessageAutoDeleteTime: int32(ttl),
 		})
 
 		if err != nil {
@@ -1076,3 +1086,89 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool)
 
 	return "", true
 }
+
+func (c *Client) cmdAdd(args []string) string {
+	if len(args) < 1 {
+		return notEnoughArguments
+	}
+
+	chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
+		Username: args[0],
+	})
+	if err != nil {
+		return err.Error()
+	}
+	if chat == nil {
+		return "No error, but chat is nil"
+	}
+
+	c.subscribeToID(chat.Id, chat)
+
+	return ""
+}
+
+func (c *Client) cmdJoin(args []string) string {
+	if len(args) < 1 {
+		return notEnoughArguments
+	}
+
+	if strings.HasPrefix(args[0], "@") {
+		chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
+			Username: args[0],
+		})
+		if err != nil {
+			return err.Error()
+		}
+		if chat == nil {
+			return "No error, but chat is nil"
+		}
+		_, err = c.client.JoinChat(&client.JoinChatRequest{
+			ChatId: chat.Id,
+		})
+		if err != nil {
+			return err.Error()
+		}
+	} else {
+		_, err := c.client.JoinChatByInviteLink(&client.JoinChatByInviteLinkRequest{
+			InviteLink: args[0],
+		})
+		if err != nil {
+			return err.Error()
+		}
+	}
+
+	return ""
+}
+
+func (c *Client) cmdSupergroup(args []string, cmdline string) string {
+	if len(args) < 1 {
+		return notEnoughArguments
+	}
+
+	_, err := c.client.CreateNewSupergroupChat(&client.CreateNewSupergroupChatRequest{
+		Title:       args[0],
+		Description: rawCmdArguments(cmdline, 1),
+	})
+	if err != nil {
+		return err.Error()
+	}
+
+	return ""
+}
+
+func (c *Client) cmdChannel(args []string, cmdline string) string {
+	if len(args) < 1 {
+		return notEnoughArguments
+	}
+
+	_, err := c.client.CreateNewSupergroupChat(&client.CreateNewSupergroupChatRequest{
+		Title:       args[0],
+		Description: rawCmdArguments(cmdline, 1),
+		IsChannel:   true,
+	})
+	if err != nil {
+		return err.Error()
+	}
+
+	return ""
+}

telegram/connect.go

@@ -3,6 +3,7 @@ package telegram
 import (
 	"github.com/pkg/errors"
 	"strconv"
+	"time"
 
 	"dev.narayana.im/narayana/telegabber/xmpp/gateway"
 
@@ -13,25 +14,25 @@ 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 +53,11 @@ 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{
@@ -77,42 +82,54 @@ 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.Done()
+		c.locks.authorizationReady.Unlock()
 		return errors.Wrap(err, "Couldn't initialize a Telegram client instance")
 	}
 
@@ -130,7 +147,7 @@ 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() {
@@ -141,14 +158,55 @@ func (c *Client) Connect(resource string) error {
 			log.Errorf("Could not retrieve chats: %v", err)
 		}
 
-		gateway.SendPresence(c.xmpp, c.jid, gateway.SPType("subscribe"))
+		gateway.SubscribeToTransport(c.xmpp, c.jid)
-		gateway.SendPresence(c.xmpp, c.jid, gateway.SPType("subscribed"))
 		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 {
@@ -178,20 +236,23 @@ func (c *Client) Disconnect(resource string, quit bool) bool {
 		)
 	}
 
-	_, 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
 		}
 
@@ -206,25 +267,56 @@ 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)
+				gateway.SendServiceMessage(c.jid, "Please, enter your Telegram login via /login 12345", c.xmpp)
 			}
 		// 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)
+			gateway.SendServiceMessage(c.jid, "Please, enter authorization code via /code 12345", c.xmpp)
+		// 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)
+			gateway.SendServiceMessage(c.jid, "Please, enter 2FA passphrase via /password 12345", c.xmpp)
 		}
+		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 {
+		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.close()
+	c.Session.Login = ""
+}
+
 // Online checks if the updates listener is alive
 func (c *Client) Online() bool {
 	return c.online

telegram/handlers.go

@@ -203,11 +203,11 @@ 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
 
-		// 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()
 
@@ -223,13 +223,35 @@ func (c *Client) updateNewMessage(update *client.UpdateNewMessage) {
 		}).Warn("New message from chat")
 
 		c.ProcessIncomingMessage(chatId, update.Message)
+
+		c.updateLastMessageHash(update.Message.ChatId, update.Message.Id, update.Message.Content)
 	}()
 }
 
 // message content updated
 func (c *Client) updateMessageContent(update *client.UpdateMessageContent) {
-	markupFunction := formatter.EntityToXEP0393
+	markupFunction := c.getFormatter()
-	if update.NewContent.MessageContentType() == client.TypeMessageText {
+
+	defer c.updateLastMessageHash(update.ChatId, update.MessageId, update.NewContent)
+
+	c.SendMessageLock.Lock()
+	c.SendMessageLock.Unlock()
+	xmppId, err := gateway.IdsDB.GetByTgIds(c.Session.Login, c.jid, update.ChatId, update.MessageId)
+	var ignoredResource string
+	if err == nil {
+		ignoredResource = c.popFromOutbox(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 && c.hasLastMessageHashChanged(update.ChatId, update.MessageId, update.NewContent) {
 		textContent := update.NewContent.(*client.MessageText)
 		var editChar string
 		if c.Session.AsciiArrows {
@@ -242,7 +264,9 @@ func (c *Client) updateMessageContent(update *client.UpdateMessageContent) {
 			textContent.Text.Entities,
 			markupFunction,
 		))
-		gateway.SendMessage(c.jid, strconv.FormatInt(update.ChatId, 10), text, c.xmpp)
+		for _, jid := range jids {
+			gateway.SendMessage(jid, strconv.FormatInt(update.ChatId, 10), text, "e"+strconv.FormatInt(update.MessageId, 10), c.xmpp, nil, false)
+		}
 	}
 }
 
@@ -256,7 +280,7 @@ func (c *Client) updateDeleteMessages(update *client.UpdateDeleteMessages) {
 			deleteChar = "✗ "
 		}
 		text := deleteChar + strings.Join(int64SliceToStringSlice(update.MessageIds), ",")
-		gateway.SendMessage(c.jid, strconv.FormatInt(update.ChatId, 10), text, c.xmpp)
+		gateway.SendTextMessage(c.jid, strconv.FormatInt(update.ChatId, 10), text, c.xmpp)
 	}
 }
 
@@ -272,6 +296,11 @@ func (c *Client) updateAuthorizationState(update *client.UpdateAuthorizationStat
 
 // clean uploaded files
 func (c *Client) updateMessageSendSucceeded(update *client.UpdateMessageSendSucceeded) {
+	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())
+	}
+
 	file, _ := c.contentToFile(update.Message.Content)
 	if file != nil && file.Local != nil {
 		c.cleanTempFile(file.Local.Path)
@@ -289,8 +318,13 @@ 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)
-	_, user, _ := c.GetContactByID(update.ChatId, nil)
+	chat, user, _ := c.GetContactByID(update.ChatId, nil)
 	if user == nil {
 		c.ProcessStatusUpdate(update.ChatId, update.Title, "chat", gateway.SPImmed(true))
 	}
+
+	// update chat title in the cache
+	if chat != nil {
+		chat.Title = update.Title
+	}
 }

telegram/utils.go

@@ -2,8 +2,10 @@ package telegram
 
 import (
 	"crypto/sha1"
+	"encoding/binary"
 	"fmt"
 	"github.com/pkg/errors"
+	"hash/maphash"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -24,12 +26,23 @@ import (
 	"github.com/zelenin/go-tdlib/client"
 )
 
+type VCardInfo struct {
+	Fn        string
+	Photo     *client.File
+	Nicknames []string
+	Given     string
+	Family    string
+	Tel       string
+	Info      string
+}
+
 var errOffline = errors.New("TDlib instance is offline")
 
 var spaceRegex = regexp.MustCompile(`\s+`)
 var replyRegex = regexp.MustCompile("\\A>>? ?([0-9]+)\\n")
 
 const newlineChar string = "\n"
+const messageHeaderSeparator string = " | "
 
 // GetContactByUsername resolves username to user id retrieves user and chat information
 func (c *Client) GetContactByUsername(username string) (*client.Chat, *client.User, error) {
@@ -108,6 +121,33 @@ func (c *Client) GetContactByID(id int64, chat *client.Chat) (*client.Chat, *cli
 	return chat, user, nil
 }
 
+// IsPM checks if a chat is PM
+func (c *Client) IsPM(id int64) (bool, error) {
+	if !c.Online() || id == 0 {
+		return false, errOffline
+	}
+
+	var err error
+
+	chat, ok := c.cache.GetChat(id)
+	if !ok {
+		chat, err = c.client.GetChat(&client.GetChatRequest{
+			ChatId: id,
+		})
+		if err != nil {
+			return false, err
+		}
+
+		c.cache.SetChat(id, chat)
+	}
+
+	chatType := chat.Type.ChatTypeType()
+	if chatType == client.TypeChatTypePrivate || chatType == client.TypeChatTypeSecret {
+		return true, nil
+	}
+	return false, nil
+}
+
 func (c *Client) userStatusToText(status client.UserStatus, chatID int64) (string, string, string) {
 	var show, textStatus, presenceType string
 
@@ -179,7 +219,7 @@ func (c *Client) ProcessStatusUpdate(chatID int64, status string, show string, o
 
 	var photo string
 	if chat != nil && chat.Photo != nil {
-		file, path, err := c.OpenPhotoFile(chat.Photo.Small, 1)
+		file, path, err := c.ForceOpenFile(chat.Photo.Small, 1)
 		if err == nil {
 			defer file.Close()
 
@@ -203,15 +243,33 @@ func (c *Client) ProcessStatusUpdate(chatID int64, status string, show string, o
 	cachedStatus, ok := c.cache.GetStatus(chatID)
 	if status == "" {
 		if ok {
-			show, status = cachedStatus.XMPP, cachedStatus.Description
+			var typ string
+			show, status, typ = cachedStatus.Destruct()
+			if presenceType == "" {
+				presenceType = typ
+			}
+			log.WithFields(log.Fields{
+				"show":         show,
+				"status":       status,
+				"presenceType": presenceType,
+			}).Debug("Cached status")
 		} else if user != nil && user.Status != nil {
 			show, status, presenceType = c.userStatusToText(user.Status, chatID)
+			log.WithFields(log.Fields{
+				"show":         show,
+				"status":       status,
+				"presenceType": presenceType,
+			}).Debug("Status to text")
 		} else {
 			show, status = "chat", chat.Title
 		}
 	}
 
-	c.cache.SetStatus(chatID, show, status)
+	cacheShow := show
+	if presenceType == "unavailable" {
+		cacheShow = presenceType
+	}
+	c.cache.SetStatus(chatID, cacheShow, status)
 
 	newArgs := []args.V{
 		gateway.SPFrom(strconv.FormatInt(chatID, 10)),
@@ -246,12 +304,15 @@ func (c *Client) formatContact(chatID int64) string {
 	if chat != nil {
 		str = fmt.Sprintf("%s (%v)", chat.Title, chat.Id)
 	} else if user != nil {
-		username := user.Username
+		var usernames string
-		if username == "" {
+		if user.Usernames != nil {
-			username = strconv.FormatInt(user.Id, 10)
+			usernames = c.usernamesToString(user.Usernames.ActiveUsernames)
+		}
+		if usernames == "" {
+			usernames = strconv.FormatInt(user.Id, 10)
 		}
 
-		str = fmt.Sprintf("%s %s (%v)", user.FirstName, user.LastName, username)
+		str = fmt.Sprintf("%s %s (%v)", user.FirstName, user.LastName, usernames)
 	} else {
 		str = strconv.FormatInt(chatID, 10)
 	}
@@ -261,6 +322,50 @@ func (c *Client) formatContact(chatID int64) string {
 	return str
 }
 
+func (c *Client) getSenderId(message *client.Message) (senderId int64) {
+	if message.SenderId != nil {
+		switch message.SenderId.MessageSenderType() {
+		case client.TypeMessageSenderUser:
+			senderUser, _ := message.SenderId.(*client.MessageSenderUser)
+			senderId = senderUser.UserId
+		case client.TypeMessageSenderChat:
+			senderChat, _ := message.SenderId.(*client.MessageSenderChat)
+			senderId = senderChat.ChatId
+		}
+	}
+
+	return
+}
+
+func (c *Client) formatSender(message *client.Message) string {
+	return c.formatContact(c.getSenderId(message))
+}
+
+func (c *Client) getMessageReply(message *client.Message) (reply *gateway.Reply, replyMsg *client.Message) {
+	if message.ReplyToMessageId != 0 {
+		var err error
+		replyMsg, err = c.client.GetMessage(&client.GetMessageRequest{
+			ChatId:    message.ChatId,
+			MessageId: message.ReplyToMessageId,
+		})
+		if err != nil {
+			log.Errorf("<error fetching message: %s>", err.Error())
+			return
+		}
+
+		replyId, err := gateway.IdsDB.GetByTgIds(c.Session.Login, c.jid, message.ChatId, message.ReplyToMessageId)
+		if err != nil {
+			replyId = strconv.FormatInt(message.ReplyToMessageId, 10)
+		}
+		reply = &gateway.Reply{
+			Author: fmt.Sprintf("%v@%s", c.getSenderId(replyMsg), gateway.Jid.Full()),
+			Id:     replyId,
+		}
+	}
+
+	return
+}
+
 func (c *Client) formatMessage(chatID int64, messageID int64, preview bool, message *client.Message) string {
 	var err error
 	if message == nil {
@@ -279,18 +384,7 @@ func (c *Client) formatMessage(chatID int64, messageID int64, preview bool, mess
 
 	var str strings.Builder
 	// add messageid and sender
-	var senderId int64
+	str.WriteString(fmt.Sprintf("%v | %s | ", message.Id, c.formatSender(message)))
-	if message.SenderId != nil {
-		switch message.SenderId.MessageSenderType() {
-		case client.TypeMessageSenderUser:
-			senderUser, _ := message.SenderId.(*client.MessageSenderUser)
-			senderId = senderUser.UserId
-		case client.TypeMessageSenderChat:
-			senderChat, _ := message.SenderId.(*client.MessageSenderChat)
-			senderId = senderChat.ChatId
-		}
-	}
-	str.WriteString(fmt.Sprintf("%v | %s | ", message.Id, c.formatContact(senderId)))
 	// add date
 	if !preview {
 		str.WriteString(
@@ -350,10 +444,24 @@ func (c *Client) formatForward(fwd *client.MessageForwardInfo) string {
 	return "Unknown forward type"
 }
 
-func (c *Client) formatFile(file *client.File, compact bool) string {
+func (c *Client) formatFile(file *client.File, compact bool) (string, string) {
+	if file == nil {
+		return "", ""
+	}
+	src, link := c.PermastoreFile(file, false)
+
+	if compact {
+		return link, link
+	} else {
+		return fmt.Sprintf("%s (%v kbytes) | %s", filepath.Base(src), file.Size/1024, link), link
+	}
+}
+
+// PermastoreFile steals a file out of TDlib control into an independent shared directory
+func (c *Client) PermastoreFile(file *client.File, clone bool) (string, string) {
 	log.Debugf("file: %#v", file)
 	if file == nil || file.Local == nil || file.Remote == nil {
-		return ""
+		return "", ""
 	}
 
 	gateway.StorageLock.Lock()
@@ -367,7 +475,7 @@ func (c *Client) formatFile(file *client.File, compact bool) string {
 		_, err := os.Stat(src)
 		if err != nil {
 			log.Errorf("Cannot access source file: %v", err)
-			return ""
+			return "", ""
 		}
 
 		size64 := uint64(file.Size)
@@ -377,18 +485,57 @@ func (c *Client) formatFile(file *client.File, compact bool) string {
 		dest := c.content.Path + "/" + basename // destination path
 		link = c.content.Link + "/" + basename  // download link
 
-		// move
+		if clone {
-		err = os.Rename(src, dest)
+			file, path, err := c.ForceOpenFile(file, 1)
-		if err != nil {
+			if err == nil {
-			linkErr := err.(*os.LinkError)
+				defer file.Close()
-			if linkErr.Err.Error() == "file exists" {
+
-				log.Warn(err.Error())
+				// mode
+				mode := os.FileMode(0644)
+				fi, err := os.Stat(path)
+				if err == nil {
+					mode = fi.Mode().Perm()
+				}
+
+				// create destination
+				tempFile, err := os.OpenFile(dest, os.O_CREATE|os.O_EXCL|os.O_WRONLY, mode)
+				if err != nil {
+					pathErr := err.(*os.PathError)
+					if pathErr.Err.Error() == "file exists" {
+						log.Warn(err.Error())
+						return src, link
+					} else {
+						log.Errorf("File creation error: %v", err)
+						return "<ERROR>", ""
+					}
+				}
+				defer tempFile.Close()
+				// copy
+				_, err = io.Copy(tempFile, file)
+				if err != nil {
+					log.Errorf("File copying error: %v", err)
+					return "<ERROR>", ""
+				}
+			} else if path != "" {
+				log.Errorf("Source file does not exist: %v", path)
+				return "<ERROR>", ""
 			} else {
-				log.Errorf("File moving error: %v", err)
+				log.Errorf("PHOTO: %#v", err.Error())
-				return "<ERROR>"
+				return "<ERROR>", ""
+			}
+		} else {
+			// move
+			err = os.Rename(src, dest)
+			if err != nil {
+				linkErr := err.(*os.LinkError)
+				if linkErr.Err.Error() == "file exists" {
+					log.Warn(err.Error())
+				} else {
+					log.Errorf("File moving error: %v", err)
+					return "<ERROR>", ""
+				}
 			}
 		}
-		gateway.CachedStorageSize += size64
 
 		// chown
 		if c.content.User != "" {
@@ -407,13 +554,12 @@ func (c *Client) formatFile(file *client.File, compact bool) string {
 				log.Errorf("Wrong user name for chown: %v", err)
 			}
 		}
+
+		// copy or move should have succeeded at this point
+		gateway.CachedStorageSize += size64
 	}
 
-	if compact {
+	return src, link
-		return link
-	} else {
-		return fmt.Sprintf("%s (%v kbytes) | %s", filepath.Base(src), file.Size/1024, link)
-	}
 }
 
 func (c *Client) formatBantime(hours int64) int32 {
@@ -441,7 +587,7 @@ func (c *Client) messageToText(message *client.Message, preview bool) string {
 		return "<empty message>"
 	}
 
-	markupFunction := formatter.EntityToXEP0393
+	markupFunction := c.getFormatter()
 	switch message.Content.MessageContentType() {
 	case client.TypeMessageSticker:
 		sticker, _ := message.Content.(*client.MessageSticker)
@@ -612,6 +758,22 @@ func (c *Client) messageToText(message *client.Message, preview bool) string {
 
 			return strings.Join(rows, "\n")
 		}
+	case client.TypeMessageChatSetMessageAutoDeleteTime:
+		ttl, _ := message.Content.(*client.MessageChatSetMessageAutoDeleteTime)
+		name := c.formatContact(ttl.FromUserId)
+		if name == "" {
+			if ttl.MessageAutoDeleteTime == 0 {
+				return "The self-destruct timer was disabled"
+			} else {
+				return fmt.Sprintf("The self-destruct timer was set to %v seconds", ttl.MessageAutoDeleteTime)
+			}
+		} else {
+			if ttl.MessageAutoDeleteTime == 0 {
+				return fmt.Sprintf("%s disabled the self-destruct timer", name)
+			} else {
+				return fmt.Sprintf("%s set the self-destruct timer to %v seconds", name, ttl.MessageAutoDeleteTime)
+			}
+		}
 	}
 
 	return fmt.Sprintf("unknown message (%s)", message.Content.MessageContentType())
@@ -626,7 +788,7 @@ func (c *Client) contentToFile(content client.MessageContent) (*client.File, *cl
 	case client.TypeMessageSticker:
 		sticker, _ := content.(*client.MessageSticker)
 		file := sticker.Sticker.Sticker
-		if sticker.Sticker.IsAnimated && sticker.Sticker.Thumbnail != nil && sticker.Sticker.Thumbnail.File != nil {
+		if sticker.Sticker.Format.StickerFormatType() == client.TypeStickerFormatTgs && sticker.Sticker.Thumbnail != nil && sticker.Sticker.Thumbnail.File != nil {
 			file = sticker.Sticker.Thumbnail.File
 		}
 		return file, nil
@@ -681,40 +843,62 @@ func (c *Client) contentToFile(content client.MessageContent) (*client.File, *cl
 	return nil, nil
 }
 
-func (c *Client) messageToPrefix(message *client.Message, previewString string, fileString string) string {
+func (c *Client) countCharsInLines(lines *[]string) (count int) {
+	for _, line := range *lines {
+		count += len(line)
+	}
+	return
+}
+
+func (c *Client) messageToPrefix(message *client.Message, previewString string, fileString string, replyMsg *client.Message) (string, int, int) {
+	isPM, err := c.IsPM(message.ChatId)
+	if err != nil {
+		log.Errorf("Could not determine if chat is PM: %v", err)
+	}
+	isCarbonsEnabled := gateway.MessageOutgoingPermissionVersion > 0 && c.Session.Carbons
+	// with carbons, hide for all messages in PM and only for outgoing in group chats
+	hideSender := isCarbonsEnabled && (message.IsOutgoing || isPM)
+
+	var replyStart, replyEnd int
 	prefix := []string{}
 	// message direction
 	var directionChar string
-	if c.Session.AsciiArrows {
+	if !hideSender {
-		if message.IsOutgoing {
+		if c.Session.AsciiArrows {
-			directionChar = "> "
+			if message.IsOutgoing {
+				directionChar = "> "
+			} else {
+				directionChar = "< "
+			}
 		} else {
-			directionChar = "< "
+			if message.IsOutgoing {
-		}
+				directionChar = "➡ "
-	} else {
+			} else {
-		if message.IsOutgoing {
+				directionChar = "⬅ "
-			directionChar = "➡ "
+			}
-		} else {
-			directionChar = "⬅ "
 		}
 	}
-	prefix = append(prefix, directionChar+strconv.FormatInt(message.Id, 10))
+	if !isPM || !c.Session.HideIds {
+		prefix = append(prefix, directionChar+strconv.FormatInt(message.Id, 10))
+	}
 	// show sender in group chats
-	if message.ChatId < 0 && message.SenderId != nil {
+	if !hideSender {
-		var senderId int64
+		sender := c.formatSender(message)
-		switch message.SenderId.MessageSenderType() {
+		if sender != "" {
-		case client.TypeMessageSenderUser:
+			prefix = append(prefix, sender)
-			senderUser, _ := message.SenderId.(*client.MessageSenderUser)
-			senderId = senderUser.UserId
-		case client.TypeMessageSenderChat:
-			senderChat, _ := message.SenderId.(*client.MessageSenderChat)
-			senderId = senderChat.ChatId
 		}
-		prefix = append(prefix, c.formatContact(senderId))
 	}
 	// reply to
 	if message.ReplyToMessageId != 0 {
-		prefix = append(prefix, "reply: "+c.formatMessage(message.ChatId, message.ReplyToMessageId, true, nil))
+		if len(prefix) > 0 {
+			replyStart = c.countCharsInLines(&prefix) + (len(prefix)-1)*len(messageHeaderSeparator)
+		}
+		replyLine := "reply: " + c.formatMessage(message.ChatId, message.ReplyToMessageId, true, replyMsg)
+		prefix = append(prefix, replyLine)
+		replyEnd = replyStart + len(replyLine)
+		if len(prefix) > 0 {
+			replyEnd += len(messageHeaderSeparator)
+		}
 	}
 	if message.ForwardInfo != nil {
 		prefix = append(prefix, "fwd: "+c.formatForward(message.ForwardInfo))
@@ -728,7 +912,7 @@ func (c *Client) messageToPrefix(message *client.Message, previewString string,
 		prefix = append(prefix, "file: "+fileString)
 	}
 
-	return strings.Join(prefix, " | ")
+	return strings.Join(prefix, messageHeaderSeparator), replyStart, replyEnd
 }
 
 func (c *Client) ensureDownloadFile(file *client.File) *client.File {
@@ -749,7 +933,13 @@ func (c *Client) ensureDownloadFile(file *client.File) *client.File {
 
 // ProcessIncomingMessage transfers a message to XMPP side and marks it as read on Telegram side
 func (c *Client) ProcessIncomingMessage(chatId int64, message *client.Message) {
-	var text string
+	isCarbon := gateway.MessageOutgoingPermissionVersion > 0 && c.Session.Carbons && message.IsOutgoing
+	jids := c.getCarbonFullJids(isCarbon, "")
+
+	var text, oob, auxText string
+
+	reply, replyMsg := c.getMessageReply(message)
+
 	content := message.Content
 	if content != nil && content.MessageContentType() == client.TypeMessageChatChangePhoto {
 		chat, err := c.client.GetChat(&client.GetChatRequest{
@@ -764,27 +954,47 @@ func (c *Client) ProcessIncomingMessage(chatId int64, message *client.Message) {
 		text = c.messageToText(message, false)
 
 		// OTR support (I do not know why would you need it, seriously)
-		if !(strings.HasPrefix(text, "?OTR") || c.Session.RawMessages) {
+		if !(strings.HasPrefix(text, "?OTR") || (c.Session.RawMessages && !c.Session.OOBMode)) {
 			file, preview := c.contentToFile(content)
 
 			// download file and preview (if present)
 			file = c.ensureDownloadFile(file)
 			preview = c.ensureDownloadFile(preview)
 
-			var prefix strings.Builder
+			previewName, _ := c.formatFile(preview, true)
-			prefix.WriteString(c.messageToPrefix(message, c.formatFile(preview, true), c.formatFile(file, false)))
+			fileName, link := c.formatFile(file, false)
-			if text != "" {
+
-				// \n if it is groupchat and message is not empty
+			oob = link
-				if chatId < 0 {
+			if c.Session.OOBMode && oob != "" {
-					prefix.WriteString("\n")
+				typ := message.Content.MessageContentType()
-				} else if chatId > 0 {
+				if typ != client.TypeMessageSticker {
-					prefix.WriteString(" | ")
+					auxText = text
+				}
+				text = oob
+			} else if !c.Session.RawMessages {
+				var newText strings.Builder
+
+				prefix, replyStart, replyEnd := c.messageToPrefix(message, previewName, fileName, replyMsg)
+				newText.WriteString(prefix)
+				if reply != nil {
+					reply.Start = uint64(replyStart)
+					reply.End = uint64(replyEnd)
 				}
 
-				prefix.WriteString(text)
+				if text != "" {
-			}
+					// \n if it is groupchat and message is not empty
+					if prefix != "" {
+						if chatId < 0 {
+							newText.WriteString("\n")
+						} else if chatId > 0 {
+							newText.WriteString(" | ")
+						}
+					}
 
-			text = prefix.String()
+					newText.WriteString(text)
+				}
+				text = newText.String()
+			}
 		}
 	}
 
@@ -794,26 +1004,40 @@ func (c *Client) ProcessIncomingMessage(chatId int64, message *client.Message) {
 		MessageIds: []int64{message.Id},
 		ForceRead:  true,
 	})
+
 	// forward message to XMPP
-	gateway.SendMessage(c.jid, strconv.FormatInt(chatId, 10), text, c.xmpp)
+	sId := strconv.FormatInt(message.Id, 10)
+	sChatId := strconv.FormatInt(chatId, 10)
+
+	for _, jid := range jids {
+		gateway.SendMessageWithOOB(jid, sChatId, text, sId, c.xmpp, reply, oob, isCarbon)
+		if auxText != "" {
+			gateway.SendMessage(jid, sChatId, auxText, sId, c.xmpp, reply, isCarbon)
+		}
+	}
 }
 
-// ProcessOutgoingMessage executes commands or sends messages to mapped chats
+// PrepareMessageContent creates a simple text message
-func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid string) client.InputMessageContent {
+func (c *Client) PrepareOutgoingMessageContent(text string) client.InputMessageContent {
+	return c.prepareOutgoingMessageContent(text, nil)
+}
+
+// ProcessOutgoingMessage executes commands or sends messages to mapped chats, returns message id
+func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid string, replyId int64, replaceId int64) int64 {
 	if !c.Online() {
 		// we're offline
-		return nil
+		return 0
 	}
 
-	if returnJid != "" && (strings.HasPrefix(text, "/") || strings.HasPrefix(text, "!")) {
+	if replaceId == 0 && (strings.HasPrefix(text, "/") || strings.HasPrefix(text, "!")) {
 		// try to execute commands
 		response, isCommand := c.ProcessChatCommand(chatID, text)
 		if response != "" {
-			gateway.SendMessage(returnJid, strconv.FormatInt(chatID, 10), response, c.xmpp)
+			c.returnMessage(returnJid, chatID, response)
 		}
 		// do not send on success
 		if isCommand {
-			return nil
+			return 0
 		}
 	}
 
@@ -821,67 +1045,41 @@ func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid str
 
 	// quotations
 	var reply int64
-	replySlice := replyRegex.FindStringSubmatch(text)
+	if replaceId == 0 && replyId == 0 {
-	if len(replySlice) > 1 {
+		replySlice := replyRegex.FindStringSubmatch(text)
-		reply, _ = strconv.ParseInt(replySlice[1], 10, 64)
+		if len(replySlice) > 1 {
+			reply, _ = strconv.ParseInt(replySlice[1], 10, 64)
+		}
+	} else {
+		reply = replyId
 	}
 
 	// attach a file
 	var file *client.InputFileLocal
-	if chatID != 0 && c.content.Upload != "" && strings.HasPrefix(text, c.content.Upload) {
+	if c.content.Upload != "" && strings.HasPrefix(text, c.content.Upload) {
 		response, err := http.Get(text)
 		if err != nil {
-			gateway.SendMessage(
+			c.returnError(returnJid, chatID, "Failed to fetch the uploaded file", err)
-				returnJid,
-				strconv.FormatInt(chatID, 10),
-				fmt.Sprintf("Failed to fetch the uploaded file: %s", err.Error()),
-				c.xmpp,
-			)
-			return nil
 		}
 		if response != nil && response.Body != nil {
 			defer response.Body.Close()
 
 			if response.StatusCode != 200 {
-				gateway.SendMessage(
+				c.returnMessage(returnJid, chatID, fmt.Sprintf("Received status code %v", response.StatusCode))
-					returnJid,
-					strconv.FormatInt(chatID, 10),
-					fmt.Sprintf("Received status code %v", response.StatusCode),
-					c.xmpp,
-				)
-				return nil
 			}
 
 			tempDir, err := ioutil.TempDir("", "telegabber-*")
 			if err != nil {
-				gateway.SendMessage(
+				c.returnError(returnJid, chatID, "Failed to create a temporary directory", err)
-					returnJid,
-					strconv.FormatInt(chatID, 10),
-					fmt.Sprintf("Failed to create a temporary directory: %s", err.Error()),
-					c.xmpp,
-				)
-				return nil
 			}
 			tempFile, err := os.Create(filepath.Join(tempDir, filepath.Base(text)))
 			if err != nil {
-				gateway.SendMessage(
+				c.returnError(returnJid, chatID, "Failed to create a temporary file", err)
-					returnJid,
-					strconv.FormatInt(chatID, 10),
-					fmt.Sprintf("Failed to create a temporary file: %s", err.Error()),
-					c.xmpp,
-				)
-				return nil
 			}
 
 			_, err = io.Copy(tempFile, response.Body)
 			if err != nil {
-				gateway.SendMessage(
+				c.returnError(returnJid, chatID, "Failed to write a temporary file", err)
-					returnJid,
-					strconv.FormatInt(chatID, 10),
-					fmt.Sprintf("Failed to write a temporary file: %s", err.Error()),
-					c.xmpp,
-				)
-				return nil
 			}
 
 			file = &client.InputFileLocal{
@@ -891,7 +1089,7 @@ func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid str
 	}
 
 	// remove first line from text
-	if file != nil || reply != 0 {
+	if file != nil || (reply != 0 && replyId == 0) {
 		newlinePos := strings.Index(text, newlineChar)
 		if newlinePos != -1 {
 			text = text[newlinePos+1:]
@@ -900,42 +1098,60 @@ func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid str
 		}
 	}
 
+	content := c.prepareOutgoingMessageContent(text, file)
+
+	if replaceId != 0 {
+		tgMessage, err := c.client.EditMessageText(&client.EditMessageTextRequest{
+			ChatId:              chatID,
+			MessageId:           replaceId,
+			InputMessageContent: content,
+		})
+		if err != nil {
+			c.returnError(returnJid, chatID, "Not edited", err)
+			return 0
+		}
+		return tgMessage.Id
+	}
+
+	tgMessage, err := c.client.SendMessage(&client.SendMessageRequest{
+		ChatId:              chatID,
+		ReplyToMessageId:    reply,
+		InputMessageContent: content,
+	})
+	if err != nil {
+		c.returnError(returnJid, chatID, "Not sent", err)
+		return 0
+	}
+	return tgMessage.Id
+}
+
+func (c *Client) returnMessage(returnJid string, chatID int64, text string) {
+	gateway.SendTextMessage(returnJid, strconv.FormatInt(chatID, 10), text, c.xmpp)
+}
+
+func (c *Client) returnError(returnJid string, chatID int64, msg string, err error) {
+	c.returnMessage(returnJid, chatID, fmt.Sprintf("%s: %s", msg, err.Error()))
+}
+
+func (c *Client) prepareOutgoingMessageContent(text string, file *client.InputFileLocal) client.InputMessageContent {
 	formattedText := &client.FormattedText{
 		Text: text,
 	}
 
-	var message client.InputMessageContent
+	var content client.InputMessageContent
 	if file != nil {
 		// we can try to send a document
-		message = &client.InputMessageDocument{
+		content = &client.InputMessageDocument{
 			Document: file,
 			Caption:  formattedText,
 		}
 	} else {
 		// compile our message
-		message = &client.InputMessageText{
+		content = &client.InputMessageText{
 			Text: formattedText,
 		}
 	}
-
+	return content
-	if chatID != 0 {
-		_, err := c.client.SendMessage(&client.SendMessageRequest{
-			ChatId:              chatID,
-			ReplyToMessageId:    reply,
-			InputMessageContent: message,
-		})
-		if err != nil {
-			gateway.SendMessage(
-				returnJid,
-				strconv.FormatInt(chatID, 10),
-				fmt.Sprintf("Not sent: %s", err.Error()),
-				c.xmpp,
-			)
-		}
-		return nil
-	} else {
-		return message
-	}
 }
 
 // StatusesRange proxies the following function from unexported cache
@@ -962,11 +1178,33 @@ func (c *Client) deleteResource(resource string) {
 	}
 }
 
+func (c *Client) resourcesRange() chan string {
+	c.locks.resourcesLock.Lock()
+
+	resourceChan := make(chan string, 1)
+
+	go func() {
+		defer func() {
+			c.locks.resourcesLock.Unlock()
+			close(resourceChan)
+		}()
+
+		for resource := range c.resources {
+			resourceChan <- resource
+		}
+	}()
+
+	return resourceChan
+}
+
 // resend statuses to (to another resource, for example)
 func (c *Client) roster(resource string) {
+	c.locks.resourcesLock.Lock()
 	if _, ok := c.resources[resource]; ok {
+		c.locks.resourcesLock.Unlock()
 		return // we know it
 	}
+	c.locks.resourcesLock.Unlock()
 
 	log.Warnf("Sending roster for %v", resource)
 
@@ -980,7 +1218,7 @@ func (c *Client) roster(resource string) {
 }
 
 // get last messages from specified chat
-func (c *Client) getLastMessages(id int64, query string, from int64, count int32) (*client.Messages, error) {
+func (c *Client) getLastMessages(id int64, query string, from int64, count int32) (*client.FoundChatMessages, error) {
 	return c.client.SearchChatMessages(&client.SearchChatMessagesRequest{
 		ChatId:   id,
 		Query:    query,
@@ -999,20 +1237,20 @@ func (c *Client) DownloadFile(id int32, priority int32, synchronous bool) (*clie
 	})
 }
 
-// OpenPhotoFile reliably obtains a photo if possible
+// ForceOpenFile reliably obtains a file if possible
-func (c *Client) OpenPhotoFile(photoFile *client.File, priority int32) (*os.File, string, error) {
+func (c *Client) ForceOpenFile(tgFile *client.File, priority int32) (*os.File, string, error) {
-	if photoFile == nil {
+	if tgFile == nil {
-		return nil, "", errors.New("Photo file not found")
+		return nil, "", errors.New("File not found")
 	}
 
-	path := photoFile.Local.Path
+	path := tgFile.Local.Path
 	file, err := os.Open(path)
 	if err == nil {
 		return file, path, nil
 	} else
 	// obtain the photo right now if still not downloaded
-	if !photoFile.Local.IsDownloadingCompleted {
+	if !tgFile.Local.IsDownloadingCompleted {
-		tdFile, tdErr := c.DownloadFile(photoFile.Id, priority, true)
+		tdFile, tdErr := c.DownloadFile(tgFile.Id, priority, true)
 		if tdErr == nil {
 			path = tdFile.Local.Path
 			file, err = os.Open(path)
@@ -1033,10 +1271,18 @@ func (c *Client) GetChatDescription(chat *client.Chat) string {
 			UserId: privateType.UserId,
 		})
 		if err == nil {
-			if fullInfo.Bio != "" {
+			if fullInfo.Bio != nil && fullInfo.Bio.Text != "" {
-				return fullInfo.Bio
+				return formatter.Format(
-			} else if fullInfo.Description != "" {
+					fullInfo.Bio.Text,
-				return fullInfo.Description
+					fullInfo.Bio.Entities,
+					c.getFormatter(),
+				)
+			} else if fullInfo.BotInfo != nil {
+				if fullInfo.BotInfo.ShortDescription != "" {
+					return fullInfo.BotInfo.ShortDescription
+				} else {
+					return fullInfo.BotInfo.Description
+				}
 			}
 		} else {
 			log.Warnf("Couldn't retrieve private chat info: %v", err.Error())
@@ -1155,3 +1401,162 @@ func (c *Client) prepareDiskSpace(size uint64) {
 		}
 	}
 }
+
+func (c *Client) GetVcardInfo(toID int64) (VCardInfo, error) {
+	var info VCardInfo
+	chat, user, err := c.GetContactByID(toID, nil)
+	if err != nil {
+		return info, err
+	}
+
+	if chat != nil {
+		info.Fn = chat.Title
+
+		if chat.Photo != nil {
+			info.Photo = chat.Photo.Small
+		}
+		info.Info = c.GetChatDescription(chat)
+	}
+	if user != nil {
+		if user.Usernames != nil {
+			info.Nicknames = make([]string, len(user.Usernames.ActiveUsernames))
+			copy(info.Nicknames, user.Usernames.ActiveUsernames)
+		}
+		info.Given = user.FirstName
+		info.Family = user.LastName
+		info.Tel = user.PhoneNumber
+	}
+
+	return info, nil
+}
+
+func (c *Client) UpdateChatNicknames() {
+	for _, id := range c.cache.ChatsKeys() {
+		chat, ok := c.cache.GetChat(id)
+		if ok {
+			newArgs := []args.V{
+				gateway.SPFrom(strconv.FormatInt(id, 10)),
+				gateway.SPNickname(chat.Title),
+			}
+
+			cachedStatus, ok := c.cache.GetStatus(id)
+			if ok {
+				show, status, typ := cachedStatus.Destruct()
+				newArgs = append(newArgs, gateway.SPShow(show), gateway.SPStatus(status))
+				if typ != "" {
+					newArgs = append(newArgs, gateway.SPType(typ))
+				}
+			}
+
+			gateway.SendPresence(
+				c.xmpp,
+				c.jid,
+				newArgs...,
+			)
+
+			gateway.SetNickname(c.jid, strconv.FormatInt(id, 10), chat.Title, c.xmpp)
+		}
+	}
+}
+
+// AddToOutbox remembers the resource from which a message with given ID was sent
+func (c *Client) AddToOutbox(xmppId, resource string) {
+	c.locks.outboxLock.Lock()
+	defer c.locks.outboxLock.Unlock()
+
+	c.outbox[xmppId] = resource
+}
+
+func (c *Client) popFromOutbox(xmppId string) string {
+	c.locks.outboxLock.Lock()
+	defer c.locks.outboxLock.Unlock()
+
+	resource, ok := c.outbox[xmppId]
+	if ok {
+		delete(c.outbox, xmppId)
+	} else {
+		log.Warnf("No %v xmppId in outbox", xmppId)
+	}
+	return resource
+}
+
+func (c *Client) getCarbonFullJids(isOutgoing bool, ignoredResource string) []string {
+	var jids []string
+	if isOutgoing {
+		for resource := range c.resourcesRange() {
+			if ignoredResource == "" || resource != ignoredResource {
+				jids = append(jids, c.jid+"/"+resource)
+			}
+		}
+	} else {
+		jids = []string{c.jid}
+	}
+	return jids
+}
+
+func (c *Client) calculateMessageHash(messageId int64, content client.MessageContent) uint64 {
+	var h maphash.Hash
+	h.SetSeed(c.msgHashSeed)
+
+	buf8 := make([]byte, 8)
+	binary.BigEndian.PutUint64(buf8, uint64(messageId))
+	h.Write(buf8)
+
+	if content != nil && content.MessageContentType() == client.TypeMessageText {
+		textContent, ok := content.(*client.MessageText)
+		if !ok {
+			uhOh()
+		}
+
+		if textContent.Text != nil {
+			h.WriteString(textContent.Text.Text)
+			for _, entity := range textContent.Text.Entities {
+				buf4 := make([]byte, 4)
+				binary.BigEndian.PutUint32(buf4, uint32(entity.Offset))
+				h.Write(buf4)
+				binary.BigEndian.PutUint32(buf4, uint32(entity.Length))
+				h.Write(buf4)
+				h.WriteString(entity.Type.TextEntityTypeType())
+			}
+		}
+	}
+
+	return h.Sum64()
+}
+
+func (c *Client) updateLastMessageHash(chatId, messageId int64, content client.MessageContent) {
+	c.locks.lastMsgHashesLock.Lock()
+	defer c.locks.lastMsgHashesLock.Unlock()
+
+	c.lastMsgHashes[chatId] = c.calculateMessageHash(messageId, content)
+}
+
+func (c *Client) hasLastMessageHashChanged(chatId, messageId int64, content client.MessageContent) bool {
+	c.locks.lastMsgHashesLock.Lock()
+	defer c.locks.lastMsgHashesLock.Unlock()
+
+	oldHash, ok := c.lastMsgHashes[chatId]
+	newHash := c.calculateMessageHash(messageId, content)
+
+	if !ok {
+		log.Warnf("Last message hash for chat %v does not exist", chatId)
+	}
+	log.WithFields(log.Fields{
+		"old hash": oldHash,
+		"new hash": newHash,
+	}).Info("Message hashes")
+
+	return !ok || oldHash != newHash
+}
+
+func (c *Client) getFormatter() func(*client.TextEntity) (*formatter.Insertion, *formatter.Insertion) {
+	return formatter.EntityToXEP0393
+}
+
+func (c *Client) usernamesToString(usernames []string) string {
+	var atUsernames []string
+	for _, username := range usernames {
+		atUsernames = append(atUsernames, "@"+username)
+	}
+	return strings.Join(atUsernames, ", ")
+}

telegram/utils_test.go

@@ -146,10 +146,13 @@ func TestFormatFile(t *testing.T) {
 		},
 	}
 
-	content := c.formatFile(&file, false)
+	content, link := c.formatFile(&file, false)
 	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) {
@@ -168,10 +171,13 @@ func TestFormatPreview(t *testing.T) {
 		},
 	}
 
-	content := c.formatFile(&file, true)
+	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) {
@@ -363,6 +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{},
@@ -383,10 +436,16 @@ func TestMessageToPrefix1(t *testing.T) {
 			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "", "")
+	prefix, replyStart, replyEnd := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "", "", nil)
 	if prefix != "➡ 42 | fwd: ziz" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if replyStart != 0 {
+		t.Errorf("Wrong replyStart: %v", replyStart)
+	}
+	if replyEnd != 0 {
+		t.Errorf("Wrong replyEnd: %v", replyEnd)
+	}
 }
 
 func TestMessageToPrefix2(t *testing.T) {
@@ -398,10 +457,16 @@ func TestMessageToPrefix2(t *testing.T) {
 			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "y.jpg", "")
+	prefix, replyStart, replyEnd := (&Client{Session: &persistence.Session{}}).messageToPrefix(&message, "y.jpg", "", nil)
 	if prefix != "⬅ 56 | fwd:  (zaz) | preview: y.jpg" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if replyStart != 0 {
+		t.Errorf("Wrong replyStart: %v", replyStart)
+	}
+	if replyEnd != 0 {
+		t.Errorf("Wrong replyEnd: %v", replyEnd)
+	}
 }
 
 func TestMessageToPrefix3(t *testing.T) {
@@ -413,10 +478,16 @@ func TestMessageToPrefix3(t *testing.T) {
 			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "a.jpg")
+	prefix, replyStart, replyEnd := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "a.jpg", nil)
 	if prefix != "< 56 | fwd:  (zuz) | file: a.jpg" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if replyStart != 0 {
+		t.Errorf("Wrong replyStart: %v", replyStart)
+	}
+	if replyEnd != 0 {
+		t.Errorf("Wrong replyEnd: %v", replyEnd)
+	}
 }
 
 func TestMessageToPrefix4(t *testing.T) {
@@ -424,10 +495,16 @@ func TestMessageToPrefix4(t *testing.T) {
 		Id:         23,
 		IsOutgoing: true,
 	}
-	prefix := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "")
+	prefix, replyStart, replyEnd := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "", nil)
 	if prefix != "> 23" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if replyStart != 0 {
+		t.Errorf("Wrong replyStart: %v", replyStart)
+	}
+	if replyEnd != 0 {
+		t.Errorf("Wrong replyEnd: %v", replyEnd)
+	}
 }
 
 func TestMessageToPrefix5(t *testing.T) {
@@ -439,8 +516,72 @@ func TestMessageToPrefix5(t *testing.T) {
 			},
 		},
 	}
-	prefix := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "h.jpg", "a.jpg")
+	prefix, replyStart, replyEnd := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "h.jpg", "a.jpg", nil)
 	if prefix != "< 560 | fwd:  (zyz) | preview: h.jpg | file: a.jpg" {
 		t.Errorf("Wrong prefix: %v", prefix)
 	}
+	if replyStart != 0 {
+		t.Errorf("Wrong replyStart: %v", replyStart)
+	}
+	if replyEnd != 0 {
+		t.Errorf("Wrong replyEnd: %v", replyEnd)
+	}
+}
+
+func TestMessageToPrefix6(t *testing.T) {
+	message := client.Message{
+		Id:               23,
+		IsOutgoing:       true,
+		ReplyToMessageId: 42,
+	}
+	reply := client.Message{
+		Id: 42,
+		Content: &client.MessageText{
+			Text: &client.FormattedText{
+				Text: "tist",
+			},
+		},
+	}
+	prefix, replyStart, replyEnd := (&Client{Session: &persistence.Session{AsciiArrows: true}}).messageToPrefix(&message, "", "", &reply)
+	if prefix != "> 23 | reply: 42 |  | tist" {
+		t.Errorf("Wrong prefix: %v", prefix)
+	}
+	if replyStart != 4 {
+		t.Errorf("Wrong replyStart: %v", replyStart)
+	}
+	if replyEnd != 26 {
+		t.Errorf("Wrong replyEnd: %v", replyEnd)
+	}
+}
+
+func GetSenderIdEmpty(t *testing.T) {
+	message := client.Message{}
+	senderId := (&Client{}).getSenderId(&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{}).getSenderId(&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{}).getSenderId(&message)
+	if senderId != -42 {
+		t.Errorf("Wrong sender id: %v", senderId)
+	}
 }

xmpp/component.go

@@ -7,6 +7,7 @@ import (
 	"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"
@@ -38,7 +39,7 @@ 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) (*xmpp.StreamManager, *xmpp.Component, error) {
 	var err error
 
 	gateway.Jid, err = stanza.NewJid(conf.Jid)
@@ -53,6 +54,8 @@ func NewComponent(conf config.XMPPConfig, tc config.TelegramConfig) (*xmpp.Strea
 		}
 	}
 
+	gateway.IdsDB = badger.IdsDBOpen(idsPath)
+
 	tgConf = tc
 
 	if tc.Content.Quota != "" {
@@ -163,6 +166,8 @@ func heartbeat(component *xmpp.Component) {
 			// it would be resolved on the next iteration
 			SaveSessions()
 		}
+
+		gateway.IdsDB.Gc()
 	}
 }
 
@@ -240,6 +245,9 @@ func Close(component *xmpp.Component) {
 	// save sessions
 	SaveSessions()
 
+	// flush the ids database
+	gateway.IdsDB.Close()
+
 	// close stream
 	component.Disconnect()
 }

xmpp/extensions/extensions.go

@@ -2,6 +2,7 @@ package extensions
 
 import (
 	"encoding/xml"
+	"strconv"
 
 	"gosrc.io/xmpp/stanza"
 )
@@ -111,6 +112,107 @@ type IqVcardDesc struct {
 	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"`
+}
+
 // Namespace is a namespace!
 func (c PresenceNickExtension) Namespace() string {
 	return c.XMLName.Space
@@ -131,6 +233,69 @@ 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
+}
+
+// Name is a packet name
+func (ClientMessage) Name() string {
+	return "message"
+}
+
+// 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{
@@ -149,4 +314,52 @@ 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{})
 }

xmpp/gateway/gateway.go

@@ -2,9 +2,11 @@ package gateway
 
 import (
 	"encoding/xml"
+	"github.com/pkg/errors"
 	"strings"
 	"sync"
 
+	"dev.narayana.im/narayana/telegabber/badger"
 	"dev.narayana.im/narayana/telegabber/xmpp/extensions"
 
 	log "github.com/sirupsen/logrus"
@@ -13,6 +15,13 @@ import (
 	"gosrc.io/xmpp/stanza"
 )
 
+type Reply struct {
+	Author string
+	Id     string
+	Start  uint64
+	End    uint64
+}
+
 const NSNick string = "http://jabber.org/protocol/nick"
 
 // Queue stores presences to send later
@@ -22,16 +31,51 @@ var QueueLock = sync.Mutex{}
 // Jid stores the component's JID object
 var Jid *stanza.Jid
 
+// 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, isCarbon bool) {
+	sendMessageWrapper(to, from, body, id, component, reply, "", isCarbon)
+}
+
+// SendServiceMessage creates and sends a simple message stanza from transport
+func SendServiceMessage(to string, body string, component *xmpp.Component) {
+	sendMessageWrapper(to, "", body, "", component, nil, "", false)
+}
+
+// SendTextMessage creates and sends a simple message stanza
+func SendTextMessage(to string, from string, body string, component *xmpp.Component) {
+	sendMessageWrapper(to, from, body, "", component, nil, "", 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 string, isCarbon bool) {
+	sendMessageWrapper(to, from, body, id, component, reply, oob, isCarbon)
+}
+
+func sendMessageWrapper(to string, from string, body string, id string, component *xmpp.Component, reply *Reply, oob string, isCarbon 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
@@ -39,6 +83,12 @@ 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,
@@ -48,13 +98,67 @@ 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,
 	}
 
-	sendMessage(&message, component)
+	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 !isCarbon && toJid.Resource != "" {
+		message.Extensions = append(message.Extensions, stanza.HintNoCopy{})
+	}
+
+	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
@@ -255,3 +359,21 @@ 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
+}

xmpp/handlers.go

@@ -4,16 +4,19 @@ import (
 	"bytes"
 	"encoding/base64"
 	"encoding/xml"
+	"fmt"
 	"github.com/pkg/errors"
 	"io"
 	"strconv"
 	"strings"
 
 	"dev.narayana.im/narayana/telegabber/persistence"
+	"dev.narayana.im/narayana/telegabber/telegram"
 	"dev.narayana.im/narayana/telegabber/xmpp/extensions"
 	"dev.narayana.im/narayana/telegabber/xmpp/gateway"
 
 	log "github.com/sirupsen/logrus"
+	"github.com/soheilhy/args"
 	"gosrc.io/xmpp"
 	"gosrc.io/xmpp/stanza"
 )
@@ -66,6 +69,17 @@ func HandleIq(s xmpp.Sender, p stanza.Packet) {
 			go handleGetDisco(discoTypeItems, s, iq)
 			return
 		}
+		_, ok = iq.Payload.(*extensions.QueryRegister)
+		if ok {
+			go handleGetQueryRegister(s, iq)
+			return
+		}
+	} else if iq.Type == "set" {
+		query, ok := iq.Payload.(*extensions.QueryRegister)
+		if ok {
+			go handleSetQueryRegister(s, iq, query)
+			return
+		}
 	}
 }
 
@@ -90,7 +104,7 @@ func HandleMessage(s xmpp.Sender, p stanza.Packet) {
 		}).Warn("Message")
 		log.Debugf("%#v", msg)
 
-		bare, resource, ok := splitFrom(msg.From)
+		bare, resource, ok := gateway.SplitJID(msg.From)
 		if !ok {
 			return
 		}
@@ -100,30 +114,164 @@ func HandleMessage(s xmpp.Sender, p stanza.Packet) {
 		session, ok := sessions[bare]
 		if !ok {
 			if msg.To == gatewayJid {
-				gateway.SendPresence(component, msg.From, gateway.SPType("subscribe"))
+				gateway.SubscribeToTransport(component, msg.From)
-				gateway.SendPresence(component, msg.From, gateway.SPType("subscribed"))
 			} else {
 				log.Error("Message from stranger")
-				return
 			}
+			return
 		}
 
 		toID, ok := toToID(msg.To)
 		if ok {
-			session.ProcessOutgoingMessage(toID, msg.Body, msg.From)
+			var reply extensions.Reply
+			var fallback extensions.Fallback
+			var replace extensions.Replace
+			msg.Get(&reply)
+			msg.Get(&fallback)
+			msg.Get(&replace)
+			log.Debugf("reply: %#v", reply)
+			log.Debugf("fallback: %#v", fallback)
+			log.Debugf("replace: %#v", replace)
+
+			var replyId int64
+			var err error
+			text := msg.Body
+			if len(reply.Id) > 0 {
+				chatId, msgId, err := gateway.IdsDB.GetByXmppId(session.Session.Login, bare, reply.Id)
+				if err == nil {
+					if chatId != toID {
+						log.Warnf("Chat mismatch: %v ≠ %v", chatId, toID)
+					} else {
+						replyId = msgId
+						log.Debugf("replace tg: %#v %#v", chatId, msgId)
+					}
+				} else {
+					id := reply.Id
+					if id[0] == 'e' {
+						id = id[1:]
+					}
+					replyId, err = strconv.ParseInt(id, 10, 64)
+					if err != nil {
+						log.Warn(errors.Wrap(err, "Failed to parse message ID!"))
+					}
+				}
+
+				if replyId != 0 && fallback.For == "urn:xmpp:reply:0" && len(fallback.Body) > 0 {
+					body := fallback.Body[0]
+					var start, end int64
+					start, err = strconv.ParseInt(body.Start, 10, 64)
+					if err != nil {
+						log.WithFields(log.Fields{
+							"start": body.Start,
+						}).Warn(errors.Wrap(err, "Failed to parse fallback start!"))
+					}
+					end, err = strconv.ParseInt(body.End, 10, 64)
+					if err != nil {
+						log.WithFields(log.Fields{
+							"end": body.End,
+						}).Warn(errors.Wrap(err, "Failed to parse fallback end!"))
+					}
+
+					fullRunes := []rune(text)
+					cutRunes := make([]rune, 0, len(text)-int(end-start))
+					cutRunes = append(cutRunes, fullRunes[:start]...)
+					cutRunes = append(cutRunes, fullRunes[end:]...)
+					text = string(cutRunes)
+				}
+			}
+			var replaceId int64
+			if replace.Id != "" {
+				chatId, msgId, err := gateway.IdsDB.GetByXmppId(session.Session.Login, bare, replace.Id)
+				if err == nil {
+					if chatId != toID {
+						gateway.SendTextMessage(msg.From, strconv.FormatInt(toID, 10), "<ERROR: Chat mismatch>", component)
+						return
+					}
+					replaceId = msgId
+					log.Debugf("replace tg: %#v %#v", chatId, msgId)
+				} else {
+					gateway.SendTextMessage(msg.From, strconv.FormatInt(toID, 10), "<ERROR: Could not find matching message to edit>", component)
+					return
+				}
+			}
+
+			session.SendMessageLock.Lock()
+			defer session.SendMessageLock.Unlock()
+			tgMessageId := session.ProcessOutgoingMessage(toID, text, msg.From, replyId, replaceId)
+			if tgMessageId != 0 {
+				if replaceId != 0 {
+					// not needed (is it persistent among clients though?)
+					/* err = gateway.IdsDB.ReplaceIdPair(session.Session.Login, bare, replace.Id, msg.Id, tgMessageId)
+					if err != nil {
+						log.Errorf("Failed to replace id %v with %v %v", replace.Id, msg.Id, tgMessageId)
+					} */
+					session.AddToOutbox(replace.Id, resource)
+				} else {
+					err = gateway.IdsDB.Set(session.Session.Login, bare, toID, tgMessageId, msg.Id)
+					if err != nil {
+						log.Errorf("Failed to save ids %v/%v %v", toID, tgMessageId, msg.Id)
+					}
+				}
+			} else {
+				/*
+					// if a message failed to edit on Telegram side, match new XMPP ID with old Telegram ID anyway
+					if replaceId != 0 {
+						err = gateway.IdsDB.ReplaceXmppId(session.Session.Login, bare, replace.Id, msg.Id)
+						if err != nil {
+							log.Errorf("Failed to replace id %v with %v", replace.Id, msg.Id)
+						}
+					} */
+			}
 			return
 		} else {
 			toJid, err := stanza.NewJid(msg.To)
 			if err == nil && toJid.Bare() == gatewayJid && (strings.HasPrefix(msg.Body, "/") || strings.HasPrefix(msg.Body, "!")) {
 				response := session.ProcessTransportCommand(msg.Body, resource)
 				if response != "" {
-					gateway.SendMessage(msg.From, "", response, component)
+					gateway.SendServiceMessage(msg.From, response, component)
 				}
 				return
 			}
 		}
 		log.Warn("Unknown purpose of the message, skipping")
 	}
+
+	if msg.Body == "" {
+		var privilege1 extensions.ComponentPrivilege1
+		if ok := msg.Get(&privilege1); ok {
+			log.Debugf("privilege1: %#v", privilege1)
+		}
+
+		for _, perm := range privilege1.Perms {
+			if perm.Access == "message" && perm.Type == "outgoing" {
+				gateway.MessageOutgoingPermissionVersion = 1
+			}
+		}
+
+		var privilege2 extensions.ComponentPrivilege2
+		if ok := msg.Get(&privilege2); ok {
+			log.Debugf("privilege2: %#v", privilege2)
+		}
+
+		for _, perm := range privilege2.Perms {
+			if perm.Access == "message" && perm.Type == "outgoing" {
+				gateway.MessageOutgoingPermissionVersion = 2
+			}
+		}
+	}
+
+	if msg.Type == "error" {
+		log.Errorf("MESSAGE ERROR: %#v", p)
+
+		if msg.XMLName.Space == "jabber:component:accept" && msg.Error.Code == 401 {
+			suffix := "@" + msg.From
+			for bare := range sessions {
+				if strings.HasSuffix(bare, suffix) {
+					gateway.SendServiceMessage(bare, "Your server \""+msg.From+"\" does not allow to send carbons", component)
+				}
+			}
+		}
+	}
 }
 
 // HandlePresence processes an incoming XMPP presence
@@ -168,7 +316,7 @@ func handleSubscription(s xmpp.Sender, p stanza.Presence) {
 	if !ok {
 		return
 	}
-	bare, _, ok := splitFrom(p.From)
+	bare, _, ok := gateway.SplitJID(p.From)
 	if !ok {
 		return
 	}
@@ -199,7 +347,7 @@ func handlePresence(s xmpp.Sender, p stanza.Presence) {
 	log.Debugf("%#v", p)
 
 	// create session
-	bare, resource, ok := splitFrom(p.From)
+	bare, resource, ok := gateway.SplitJID(p.From)
 	if !ok {
 		return
 	}
@@ -229,13 +377,21 @@ func handlePresence(s xmpp.Sender, p stanza.Presence) {
 				log.Error(errors.Wrap(err, "TDlib connection failure"))
 			} else {
 				for status := range session.StatusesRange() {
+					show, description, typ := status.Destruct()
+					newArgs := []args.V{
+						gateway.SPImmed(false),
+					}
+					if typ != "" {
+						newArgs = append(newArgs, gateway.SPType(typ))
+					}
 					go session.ProcessStatusUpdate(
 						status.ID,
-						status.Description,
+						description,
-						status.XMPP,
+						show,
-						gateway.SPImmed(false),
+						newArgs...,
 					)
 				}
+				session.UpdateChatNicknames()
 			}
 		}()
 	}
@@ -265,45 +421,12 @@ func handleGetVcardIq(s xmpp.Sender, iq *stanza.IQ, typ byte) {
 		log.Error("Invalid IQ to")
 		return
 	}
-	chat, user, err := session.GetContactByID(toID, nil)
+	info, err := session.GetVcardInfo(toID)
 	if err != nil {
 		log.Error(err)
 		return
 	}
 
-	var fn, photo, nickname, given, family, tel, info string
-	if chat != nil {
-		fn = chat.Title
-
-		if chat.Photo != nil {
-			file, path, err := session.OpenPhotoFile(chat.Photo.Small, 32)
-			if err == nil {
-				defer file.Close()
-
-				buf := new(bytes.Buffer)
-				binval := base64.NewEncoder(base64.StdEncoding, buf)
-				_, err = io.Copy(binval, file)
-				binval.Close()
-				if err == nil {
-					photo = buf.String()
-				} else {
-					log.Errorf("Error calculating base64: %v", path)
-				}
-			} else if path != "" {
-				log.Errorf("Photo does not exist: %v", path)
-			} else {
-				log.Errorf("PHOTO: %#v", err.Error())
-			}
-		}
-		info = session.GetChatDescription(chat)
-	}
-	if user != nil {
-		nickname = user.Username
-		given = user.FirstName
-		family = user.LastName
-		tel = user.PhoneNumber
-	}
-
 	answer := stanza.IQ{
 		Attrs: stanza.Attrs{
 			From: iq.To,
@@ -311,7 +434,7 @@ func handleGetVcardIq(s xmpp.Sender, iq *stanza.IQ, typ byte) {
 			Id:   iq.Id,
 			Type: "result",
 		},
-		Payload: makeVCardPayload(typ, iq.To, fn, photo, nickname, given, family, tel, info),
+		Payload: makeVCardPayload(typ, iq.To, info, session),
 	}
 	log.Debugf("%#v", answer)
 
@@ -340,12 +463,15 @@ func handleGetDisco(dt discoType, s xmpp.Sender, iq *stanza.IQ) {
 	if dt == discoTypeInfo {
 		disco := answer.DiscoInfo()
 		toID, toOk := toToID(iq.To)
-		if !toOk {
+		if toOk {
+			disco.AddIdentity("", "account", "registered")
+		} else {
 			disco.AddIdentity("Telegram Gateway", "gateway", "telegram")
+			disco.AddFeatures("jabber:iq:register")
 		}
 
 		var isMuc bool
-		bare, _, fromOk := splitFrom(iq.From)
+		bare, _, fromOk := gateway.SplitJID(iq.From)
 		if fromOk {
 			session, sessionOk := sessions[bare]
 			if sessionOk && session.Session.MUC {
@@ -399,7 +525,7 @@ func handleGetDisco(dt discoType, s xmpp.Sender, iq *stanza.IQ) {
 
 		_, ok := toToID(iq.To)
 		if !ok {
-			bare, _, ok := splitFrom(iq.From)
+			bare, _, ok := gateway.SplitJID(iq.From)
 			if ok {
 				// raw access, no need to create a new instance if not connected
 				session, ok := sessions[bare]
@@ -428,15 +554,163 @@ func handleGetDisco(dt discoType, s xmpp.Sender, iq *stanza.IQ) {
 	_ = gateway.ResumableSend(component, answer)
 }
 
-func splitFrom(from string) (string, string, bool) {
+func handleGetQueryRegister(s xmpp.Sender, iq *stanza.IQ) {
-	fromJid, err := stanza.NewJid(from)
+	component, ok := s.(*xmpp.Component)
-	if err != nil {
+	if !ok {
-		log.WithFields(log.Fields{
+		log.Error("Not a component")
-			"from": from,
+		return
-		}).Error(errors.Wrap(err, "Invalid from JID!"))
+	}
-		return "", "", false
+
+	answer, err := stanza.NewIQ(stanza.Attrs{
+		Type: stanza.IQTypeResult,
+		From: iq.To,
+		To:   iq.From,
+		Id:   iq.Id,
+		Lang: "en",
+	})
+	if err != nil {
+		log.Errorf("Failed to create answer IQ: %v", err)
+		return
+	}
+
+	var login string
+	bare, _, ok := gateway.SplitJID(iq.From)
+	if ok {
+		session, ok := sessions[bare]
+		if ok {
+			login = session.Session.Login
+		}
+	}
+
+	var query stanza.IQPayload
+	if login == "" {
+		query = extensions.QueryRegister{
+			Instructions: fmt.Sprintf("Authorization in Telegram is a multi-step process, so please accept %v to your contacts and follow further instructions (provide the authentication code there, etc.).\nFor now, please provide your login.", iq.To),
+		}
+	} else {
+		query = extensions.QueryRegister{
+			Instructions: "Already logged in",
+			Username:     login,
+			Registered:   &extensions.QueryRegisterRegistered{},
+		}
+	}
+	answer.Payload = query
+
+	log.Debugf("%#v", query)
+
+	_ = gateway.ResumableSend(component, answer)
+
+	if login == "" {
+		gateway.SubscribeToTransport(component, iq.From)
+	}
+}
+
+func handleSetQueryRegister(s xmpp.Sender, iq *stanza.IQ, query *extensions.QueryRegister) {
+	component, ok := s.(*xmpp.Component)
+	if !ok {
+		log.Error("Not a component")
+		return
+	}
+
+	answer, err := stanza.NewIQ(stanza.Attrs{
+		Type: stanza.IQTypeResult,
+		From: iq.To,
+		To:   iq.From,
+		Id:   iq.Id,
+		Lang: "en",
+	})
+	if err != nil {
+		log.Errorf("Failed to create answer IQ: %v", err)
+		return
+	}
+
+	defer gateway.ResumableSend(component, answer)
+
+	if query.Remove != nil {
+		iqAnswerSetError(answer, query, 405)
+		return
+	}
+
+	var login string
+	var session *telegram.Client
+	bare, resource, ok := gateway.SplitJID(iq.From)
+	if ok {
+		session, ok = sessions[bare]
+		if ok {
+			login = session.Session.Login
+		}
+	}
+
+	if login == "" {
+		if !ok {
+			session, ok = getTelegramInstance(bare, &persistence.Session{}, component)
+			if !ok {
+				iqAnswerSetError(answer, query, 500)
+				return
+			}
+		}
+
+		err := session.TryLogin(resource, query.Username)
+		if err != nil {
+			if err.Error() == telegram.TelegramAuthDone {
+				iqAnswerSetError(answer, query, 406)
+			} else {
+				iqAnswerSetError(answer, query, 500)
+			}
+			return
+		}
+
+		err = session.SetPhoneNumber(query.Username)
+		if err != nil {
+			iqAnswerSetError(answer, query, 500)
+			return
+		}
+
+		// everything okay, the response should be empty with no payload/error at this point
+		gateway.SubscribeToTransport(component, iq.From)
+	} else {
+		iqAnswerSetError(answer, query, 406)
+	}
+}
+
+func iqAnswerSetError(answer *stanza.IQ, payload *extensions.QueryRegister, code int) {
+	answer.Type = stanza.IQTypeError
+	answer.Payload = *payload
+	switch code {
+	case 400:
+		answer.Error = &stanza.Err{
+			Code:   code,
+			Type:   stanza.ErrorTypeModify,
+			Reason: "bad-request",
+		}
+	case 405:
+		answer.Error = &stanza.Err{
+			Code:   code,
+			Type:   stanza.ErrorTypeCancel,
+			Reason: "not-allowed",
+			Text:   "Logging out is dangerous. If you are sure you would be able to receive the authentication code again, issue the /logout command to the transport",
+		}
+	case 406:
+		answer.Error = &stanza.Err{
+			Code:   code,
+			Type:   stanza.ErrorTypeModify,
+			Reason: "not-acceptable",
+			Text:   "Phone number already provided, chat with the transport for further instruction",
+		}
+	case 500:
+		answer.Error = &stanza.Err{
+			Code:   code,
+			Type:   stanza.ErrorTypeWait,
+			Reason: "internal-server-error",
+		}
+	default:
+		log.Error("Unknown error code, falling back with empty reason")
+		answer.Error = &stanza.Err{
+			Code:   code,
+			Type:   stanza.ErrorTypeCancel,
+			Reason: "undefined-condition",
+		}
 	}
-	return fromJid.Bare(), fromJid.Resource, true
 }
 
 func toToID(to string) (int64, bool) {
@@ -454,47 +728,69 @@ func toToID(to string) (int64, bool) {
 	return toID, true
 }
 
-func makeVCardPayload(typ byte, id, fn, photo, nickname, given, family, tel, info string) stanza.IQPayload {
+func makeVCardPayload(typ byte, id string, info telegram.VCardInfo, session *telegram.Client) stanza.IQPayload {
+	var base64Photo string
+	if info.Photo != nil {
+		file, path, err := session.ForceOpenFile(info.Photo, 32)
+		if err == nil {
+			defer file.Close()
+
+			buf := new(bytes.Buffer)
+			binval := base64.NewEncoder(base64.StdEncoding, buf)
+			_, err = io.Copy(binval, file)
+			binval.Close()
+			if err == nil {
+				base64Photo = buf.String()
+			} else {
+				log.Errorf("Error calculating base64: %v", path)
+			}
+		} else if path != "" {
+			log.Errorf("Photo does not exist: %v", path)
+		} else {
+			log.Errorf("PHOTO: %#v", err.Error())
+		}
+	}
+
 	if typ == TypeVCardTemp {
 		vcard := &extensions.IqVcardTemp{}
 
-		vcard.Fn.Text = fn
+		vcard.Fn.Text = info.Fn
-		if photo != "" {
+		if base64Photo != "" {
 			vcard.Photo.Type.Text = "image/jpeg"
-			vcard.Photo.Binval.Text = photo
+			vcard.Photo.Binval.Text = base64Photo
 		}
-		vcard.Nickname.Text = nickname
+		vcard.Nickname.Text = strings.Join(info.Nicknames, ",")
-		vcard.N.Given.Text = given
+		vcard.N.Given.Text = info.Given
-		vcard.N.Family.Text = family
+		vcard.N.Family.Text = info.Family
-		vcard.Tel.Number.Text = tel
+		vcard.Tel.Number.Text = info.Tel
-		vcard.Desc.Text = info
+		vcard.Desc.Text = info.Info
 
 		return vcard
 	} else if typ == TypeVCard4 {
 		nodes := []stanza.Node{}
-		if fn != "" {
+		if info.Fn != "" {
 			nodes = append(nodes, stanza.Node{
 				XMLName: xml.Name{Local: "fn"},
 				Nodes: []stanza.Node{
 					stanza.Node{
 						XMLName: xml.Name{Local: "text"},
-						Content: fn,
+						Content: info.Fn,
 					},
 				},
 			})
 		}
-		if photo != "" {
+		if base64Photo != "" {
 			nodes = append(nodes, stanza.Node{
 				XMLName: xml.Name{Local: "photo"},
 				Nodes: []stanza.Node{
 					stanza.Node{
 						XMLName: xml.Name{Local: "uri"},
-						Content: "data:image/jpeg;base64," + photo,
+						Content: "data:image/jpeg;base64," + base64Photo,
 					},
 				},
 			})
 		}
-		if nickname != "" {
+		for _, nickname := range info.Nicknames {
 			nodes = append(nodes, stanza.Node{
 				XMLName: xml.Name{Local: "nickname"},
 				Nodes: []stanza.Node{
@@ -513,39 +809,39 @@ func makeVCardPayload(typ byte, id, fn, photo, nickname, given, family, tel, inf
 				},
 			})
 		}
-		if family != "" || given != "" {
+		if info.Family != "" || info.Given != "" {
 			nodes = append(nodes, stanza.Node{
 				XMLName: xml.Name{Local: "n"},
 				Nodes: []stanza.Node{
 					stanza.Node{
 						XMLName: xml.Name{Local: "surname"},
-						Content: family,
+						Content: info.Family,
 					},
 					stanza.Node{
 						XMLName: xml.Name{Local: "given"},
-						Content: given,
+						Content: info.Given,
 					},
 				},
 			})
 		}
-		if tel != "" {
+		if info.Tel != "" {
 			nodes = append(nodes, stanza.Node{
 				XMLName: xml.Name{Local: "tel"},
 				Nodes: []stanza.Node{
 					stanza.Node{
 						XMLName: xml.Name{Local: "uri"},
-						Content: "tel:" + tel,
+						Content: "tel:" + info.Tel,
 					},
 				},
 			})
 		}
-		if info != "" {
+		if info.Info != "" {
 			nodes = append(nodes, stanza.Node{
 				XMLName: xml.Name{Local: "note"},
 				Nodes: []stanza.Node{
 					stanza.Node{
 						XMLName: xml.Name{Local: "text"},
-						Content: info,
+						Content: info.Info,
 					},
 				},
 			})