Extremely WIP cross-signing and SSSS support

go.mod

@@ -27,3 +27,6 @@ require (
 	maunium.net/go/mauview v0.1.1
 	maunium.net/go/tcell v0.2.0
 )
+
+//replace maunium.net/go/mautrix => ../mautrix-go
+replace maunium.net/go/mautrix => github.com/nikofil/mautrix-go v0.5.2-0.20200911223256-b40ab761fadc

go.sum

@@ -1,28 +1,42 @@
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@@ -32,20 +46,21 @@ github.com/lithammer/fuzzysearch v1.1.0/go.mod h1:Bqx4wo8lTOFcJr3ckpY6HA9lEIOO0H
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@@ -53,15 +68,12 @@ github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0
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@@ -74,25 +86,27 @@ github.com/tidwall/sjson v1.1.1 h1:7h1vk049Jnd5EH9NyzNiEuwYW4b5qgreBbqRC19AS3U=
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@@ -106,19 +120,17 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/toast.v1 v1.0.0-20180812000517-0a84660828b2 h1:MZF6J7CV6s/h0HBkfqebrYfKCVEo5iN+wzE4QhV3Evo=
+gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/toast.v1 v1.0.0-20180812000517-0a84660828b2/go.mod h1:s1Sn2yZos05Qfs7NKt867Xe18emOmtsO3eAKbDaon0o=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/vansante/go-ffprobe.v2 v2.0.2 h1:DdxSfFnlqeawPIVbIQEI6LR6OQHQNR7tNgWb2mWuC4w=
 gopkg.in/vansante/go-ffprobe.v2 v2.0.2/go.mod h1:qF0AlAjk7Nqzqf3y333Ly+KxN3cKF2JqA3JT5ZheUGE=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 maunium.net/go/maulogger/v2 v2.1.1/go.mod h1:TYWy7wKwz/tIXTpsx8G3mZseIRiC5DoMxSZazOHy68A=
-maunium.net/go/mautrix v0.7.6 h1:jB9oCimPq0mVyolwQBC/9N1fu21AU+Ryq837cLf4gOo=
-maunium.net/go/mautrix v0.7.6/go.mod h1:Va/74MijqaS0DQ3aUqxmFO54/PMfr1LVsCOcGRHbYmo=
 maunium.net/go/mauview v0.1.1 h1:wfTXyPx3LGAGpTskh+UbBv/QItUWnEpaneHmywoYnfY=
 maunium.net/go/mauview v0.1.1/go.mod h1:3QBUiuLct9moP1LgDhCGIg0Ovxn38Bd2sGndnUOuj4o=
 maunium.net/go/tcell v0.2.0 h1:1Q0kN3wCOGAIGu1r3QHADsjSUOPDylKREvCv3EzJpVg=

interface/matrix.go

@@ -51,6 +51,7 @@ type MatrixContainer interface {
 
 	Login(user, password string) error
 	Logout()
+	UIAFallback(authType mautrix.AuthType, sessionID string) error
 
 	SendPreferencesToMatrix()
 	PrepareMarkdownMessage(roomID id.RoomID, msgtype event.MessageType, text, html string, relation *Relation) *muksevt.Event

matrix/matrix.go

@@ -429,8 +429,8 @@ func (c *Container) Start() {
 			return
 		default:
 			if err := c.client.Sync(); err != nil {
-				if httpErr, ok := err.(mautrix.HTTPError); ok && httpErr.Code == http.StatusUnauthorized {
+				if errors.Is(err, mautrix.MUnknownToken) {
-					debug.Print("Sync() errored with ", err, " -> logging out")
+					debug.Print("Sync() errored with", err, "-> logging out")
 					c.Logout()
 				} else {
 					debug.Print("Sync() errored", err)

matrix/uia-fallback.go

@@ -0,0 +1,114 @@
+// gomuks - A terminal Matrix client written in Go.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package matrix
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"net/url"
+	"time"
+
+	"maunium.net/go/mautrix"
+
+	"maunium.net/go/gomuks/debug"
+	"maunium.net/go/gomuks/lib/open"
+)
+
+const uiaFallbackPage = `<!DOCTYPE html>
+<html lang="en">
+<head>
+	<title>gomuks user-interactive auth</title>
+	<meta charset="utf-8"/>
+	<style>
+		body {
+			text-align: center;
+		}
+	</style>
+</head>
+<body>
+	<h2>Please complete the login in the popup window</h2>
+	<button onclick="openPopup()">Open popup</button>
+	<button onclick="finish(false)">Cancel</button>
+	<script>
+		const url = location.hash.substr(1)
+		let popupWindow
+
+		function finish(success) {
+			if (popupWindow) {
+				popupWindow.close()
+			}
+			fetch("", {method: success ? "POST" : "DELETE"}).then(() => window.close())
+		}
+
+		function openPopup() {
+			popupWindow = window.open(url)
+		}
+
+		window.addEventListener("message", evt => evt.data === "authDone" && finish(true))
+	</script>
+</body>
+</html>
+`
+
+func (c *Container) UIAFallback(loginType mautrix.AuthType, sessionID string) error {
+	errChan := make(chan error, 1)
+	server := &http.Server{Addr: ":29325"}
+	server.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method == "GET" {
+			w.Header().Add("Content-Type", "text/html")
+			w.WriteHeader(http.StatusOK)
+			_, _ = w.Write([]byte(uiaFallbackPage))
+		} else if r.Method == "POST" || r.Method == "DELETE" {
+			w.Header().Add("Content-Type", "text/html")
+			w.WriteHeader(http.StatusOK)
+
+			go func() {
+				ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+				defer cancel()
+				err := server.Shutdown(ctx)
+				if err != nil {
+					debug.Printf("Failed to shut down SSO server: %v\n", err)
+				}
+				if r.Method == "DELETE" {
+					errChan <- errors.New("login cancelled")
+				} else {
+					errChan <- nil
+				}
+			}()
+		} else {
+			w.WriteHeader(http.StatusMethodNotAllowed)
+		}
+	})
+	go server.ListenAndServe()
+	defer server.Close()
+	authURL := c.client.BuildURLWithQuery(mautrix.URLPath{"auth", loginType, "fallback", "web"}, map[string]string{
+		"session": sessionID,
+	})
+	link := url.URL{
+		Scheme:   "http",
+		Host:     "localhost:29325",
+		Path:     "/",
+		Fragment: authURL,
+	}
+	err := open.Open(link.String())
+	if err != nil {
+		return err
+	}
+	err = <-errChan
+	return err
+}

ui/command-processor.go

@@ -104,6 +104,9 @@ func NewCommandProcessor(parent *MainView) *CommandProcessor {
 			"e":          {"edit"},
 			"dl":         {"download"},
 			"o":          {"open"},
+			"4s":         {"ssss"},
+			"s4":         {"ssss"},
+			"cs":         {"cross-signing"},
 		},
 		autocompleters: map[string]CommandAutocompleter{
 			"devices":     autocompleteDevice,
@@ -172,6 +175,8 @@ func NewCommandProcessor(parent *MainView) *CommandProcessor {
 			"import":        cmdImportKeys,
 			"export":        cmdExportKeys,
 			"export-room":   cmdExportRoomKeys,
+			"ssss":          cmdSSSS,
+			"cross-signing": cmdCrossSigning,
 		},
 	}
 }

ui/crypto-commands.go

@@ -19,6 +19,7 @@
 package ui
 
 import (
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"path/filepath"
@@ -26,7 +27,10 @@ import (
 	"time"
 	"unicode"
 
+	ifc "maunium.net/go/gomuks/interface"
+	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/crypto"
+	"maunium.net/go/mautrix/crypto/ssss"
 	"maunium.net/go/mautrix/id"
 )
 
@@ -243,7 +247,7 @@ func cmdImportKeys(cmd *Command) {
 		cmd.Reply("Failed to read %s: %v", path, err)
 		return
 	}
-	passphrase, ok := cmd.MainView.AskPassword("Key import", false)
+	passphrase, ok := cmd.MainView.AskPassword("Key import", "passphrase", "", false)
 	if !ok {
 		cmd.Reply("Passphrase entry cancelled")
 		return
@@ -263,7 +267,7 @@ func exportKeys(cmd *Command, sessions []*crypto.InboundGroupSession) {
 		cmd.Reply("Failed to get absolute path: %v", err)
 		return
 	}
-	passphrase, ok := cmd.MainView.AskPassword("Key export", true)
+	passphrase, ok := cmd.MainView.AskPassword("Key export", "passphrase", "", true)
 	if !ok {
 		cmd.Reply("Passphrase entry cancelled")
 		return
@@ -299,3 +303,341 @@ func cmdExportRoomKeys(cmd *Command) {
 	}
 	exportKeys(cmd, sessions)
 }
+
+const ssssHelp = `Usage: /%s <subcommand> [...]
+
+Subcommands:
+* status [key ID] - Check the status of your SSSS.
+* generate [--set-default] - Generate a SSSS key and optionally set it as the default.
+* set-default <key ID> - Set a SSSS key as the default.`
+
+func cmdSSSS(cmd *Command) {
+	if len(cmd.Args) == 0 {
+		cmd.Reply(ssssHelp, cmd.OrigCommand)
+		return
+	}
+
+	mach := cmd.Matrix.Crypto().(*crypto.OlmMachine)
+
+	switch strings.ToLower(cmd.Args[0]) {
+	case "status":
+		keyID := ""
+		if len(cmd.Args) > 1 {
+			keyID = cmd.Args[1]
+		}
+		cmdS4Status(cmd, mach, keyID)
+	case "generate":
+		setDefault := len(cmd.Args) > 1 && strings.ToLower(cmd.Args[1]) == "--set-default"
+		cmdS4Generate(cmd, mach, setDefault)
+	case "set-default":
+		if len(cmd.Args) < 2 {
+			cmd.Reply("Usage: /%s set-default <key ID>", cmd.OrigCommand)
+			return
+		}
+		cmdS4SetDefault(cmd, mach, cmd.Args[1])
+	default:
+		cmd.Reply(ssssHelp, cmd.OrigCommand)
+	}
+}
+
+func cmdS4Status(cmd *Command, mach *crypto.OlmMachine, keyID string) {
+	var keyData *ssss.KeyMetadata
+	var err error
+	if len(keyID) == 0 {
+		keyID, keyData, err = mach.SSSS.GetDefaultKeyData()
+	} else {
+		keyData, err = mach.SSSS.GetKeyData(keyID)
+	}
+	if errors.Is(err, ssss.ErrNoDefaultKeyAccountDataEvent) {
+		cmd.Reply("SSSS is not set up: no default key set")
+	} else if err != nil {
+		cmd.Reply("Failed to get key data: %v", err)
+		return
+	}
+	hasPassphrase := "no"
+	if keyData.Passphrase != nil {
+		hasPassphrase = fmt.Sprintf("yes (alg=%s,bits=%d,iter=%d)", keyData.Passphrase.Algorithm, keyData.Passphrase.Bits, keyData.Passphrase.Iterations)
+	}
+	algorithm := keyData.Algorithm
+	if algorithm != ssss.AlgorithmAESHMACSHA2 {
+		algorithm += " (not supported!)"
+	}
+	cmd.Reply("Default key is set.\n  Key ID: %s\n  Has passphrase: %s\n  Algorithm: %s", keyID, hasPassphrase, algorithm)
+}
+
+func cmdS4Generate(cmd *Command, mach *crypto.OlmMachine, setDefault bool) {
+	passphrase, ok := cmd.MainView.AskPassword("Passphrase", "", "", false)
+	if !ok {
+		return
+	}
+
+	key, err := ssss.NewKey(passphrase)
+	if err != nil {
+		cmd.Reply("Failed to generate new key: %v", err)
+		return
+	}
+
+	err = mach.SSSS.SetKeyData(key.ID, key.Metadata)
+	if err != nil {
+		cmd.Reply("Failed to upload key metadata: %v", err)
+		return
+	}
+
+	// TODO if we start persisting command replies, the recovery key needs to be moved into a popup
+	cmd.Reply("Successfully generated key %s\nRecovery key: %s", key.ID, key.RecoveryKey())
+
+	if setDefault {
+		err = mach.SSSS.SetDefaultKeyID(key.ID)
+		if err != nil {
+			cmd.Reply("Failed to set key as default: %v", err)
+		}
+	} else {
+		cmd.Reply("You can use `/%s set-default %s` to set it as the default", cmd.OrigCommand, key.ID)
+	}
+}
+
+func cmdS4SetDefault(cmd *Command, mach *crypto.OlmMachine, keyID string) {
+	_, err := mach.SSSS.GetKeyData(keyID)
+	if err != nil {
+		if errors.Is(err, mautrix.MNotFound) {
+			cmd.Reply("Couldn't find key data on server")
+		} else {
+			cmd.Reply("Failed to fetch key data: %v", err)
+		}
+		return
+	}
+
+	err = mach.SSSS.SetDefaultKeyID(keyID)
+	if err != nil {
+		cmd.Reply("Failed to set key as default: %v", err)
+	} else {
+		cmd.Reply("Successfully set key %s as default", keyID)
+	}
+}
+
+const crossSigningHelp = `Usage: /%s <subcommand> [...]
+
+Subcommands:
+* status
+    Check the status of your own cross-signing keys.
+* generate [--force]
+    Generate and upload new cross-signing keys.
+    This will prompt you to enter your account password.
+    If you already have existing keys, --force is required.
+* fetch [--save-to-disk]
+    Fetch your cross-signing keys from SSSS and decrypt them.
+    If --save-to-disk is specified, the keys are saved to disk.
+* upload
+    Upload your cross-signing keys to SSSS.`
+
+func cmdCrossSigning(cmd *Command) {
+	if len(cmd.Args) == 0 {
+		cmd.Reply(crossSigningHelp, cmd.OrigCommand)
+		return
+	}
+
+	client := cmd.Matrix.Client()
+	mach := cmd.Matrix.Crypto().(*crypto.OlmMachine)
+
+	switch strings.ToLower(cmd.Args[0]) {
+	case "status":
+		cmdCrossSigningStatus(cmd, mach, client)
+	case "generate":
+		force := len(cmd.Args) > 1 && strings.ToLower(cmd.Args[1]) == "--force"
+		cmdCrossSigningGenerate(cmd, cmd.Matrix, mach, client, force)
+	case "fetch":
+		saveToDisk := len(cmd.Args) > 1 && strings.ToLower(cmd.Args[1]) == "--save-to-disk"
+		cmdCrossSigningFetch(cmd, mach, saveToDisk)
+	case "upload":
+		cmdCrossSigningUpload(cmd, mach)
+	default:
+		cmd.Reply(crossSigningHelp, cmd.OrigCommand)
+	}
+}
+
+func parseKeyResp(keys *mautrix.RespQueryKeys, userID id.UserID) (id.Ed25519, id.Ed25519, id.Ed25519, bool) {
+	masterKeys, ok := keys.MasterKeys[userID]
+	if !ok {
+		return "", "", "", false
+	}
+	selfSigningKeys, ok := keys.SelfSigningKeys[userID]
+	if !ok {
+		return "", "", "", false
+	}
+	userSigningKeys, ok := keys.UserSigningKeys[userID]
+	if !ok {
+		return masterKeys.FirstKey(), selfSigningKeys.FirstKey(), "", true
+	}
+	return masterKeys.FirstKey(), userSigningKeys.FirstKey(), selfSigningKeys.FirstKey(), true
+}
+
+func cmdCrossSigningStatus(cmd *Command, mach *crypto.OlmMachine, client *mautrix.Client) {
+	if mach.CrossSigningKeys != nil {
+		cmd.Reply("Cross-signing is set up and private keys are cached")
+		cmd.Reply("Master key: %s", mach.CrossSigningKeys.MasterKey.PublicKey)
+		cmd.Reply("User signing key: %s", mach.CrossSigningKeys.UserSigningKey.PublicKey)
+		cmd.Reply("Self-signing key: %s", mach.CrossSigningKeys.SelfSigningKey.PublicKey)
+		return
+	}
+	keys, err := client.QueryKeys(&mautrix.ReqQueryKeys{
+		DeviceKeys: mautrix.DeviceKeysRequest{
+			client.UserID: mautrix.DeviceIDList{client.DeviceID},
+		},
+	})
+	if err != nil {
+		cmd.Reply("Failed to query own keys: %v", err)
+		return
+	}
+	masterKey, selfSigningKey, userSigningKey, ok := parseKeyResp(keys, client.UserID)
+	if !ok {
+		cmd.Reply("Didn't find published cross-signing keys")
+		return
+	}
+	cmd.Reply("Cross-signing is set up, but private keys are not cached")
+	cmd.Reply("Master key: %s", masterKey)
+	cmd.Reply("User signing key: %s", userSigningKey)
+	cmd.Reply("Self-signing key: %s", selfSigningKey)
+}
+
+func cmdCrossSigningFetch(cmd *Command, mach *crypto.OlmMachine, saveToDisk bool) {
+	key := getSSSS(cmd, mach)
+	if key == nil {
+		return
+	}
+
+	err := mach.FetchCrossSigningKeysFromSSSS(key)
+	if err != nil {
+		cmd.Reply("Error fetching cross-signing keys: %v", err)
+		return
+	}
+	if saveToDisk {
+		cmd.Reply("Saving keys to disk is not yet implemented")
+	}
+	cmd.Reply("Successfully unlocked cross-signing keys")
+}
+
+func cmdCrossSigningGenerate(cmd *Command, container ifc.MatrixContainer, mach *crypto.OlmMachine, client *mautrix.Client, force bool) {
+	if !force {
+		keys, err := client.QueryKeys(&mautrix.ReqQueryKeys{
+			DeviceKeys: mautrix.DeviceKeysRequest{
+				client.UserID: mautrix.DeviceIDList{client.DeviceID},
+			},
+		})
+		if err == nil {
+			_, _, _, ok := parseKeyResp(keys, client.UserID)
+			if ok {
+				cmd.Reply("Found existing cross-signing keys. Use `--force` if you want to overwrite them.")
+				return
+			}
+		}
+	}
+
+	keys, err := mach.GenerateCrossSigningKeys()
+	if err != nil {
+		cmd.Reply("Failed to generate cross-signing keys: %v", err)
+		return
+	}
+
+	err = mach.PublishCrossSigningKeys(keys, func(uia *mautrix.RespUserInteractive) interface{} {
+		if !uia.HasSingleStageFlow(mautrix.AuthTypePassword) {
+			for _, flow := range uia.Flows {
+				if len(flow.Stages) != 1 {
+					return nil
+				}
+				cmd.Reply("Opening browser for authentication")
+				err := container.UIAFallback(flow.Stages[0], uia.Session)
+				if err != nil {
+					cmd.Reply("Authentication failed: %v", err)
+					return nil
+				}
+				return &mautrix.BaseAuthData{
+					Type:    flow.Stages[0],
+					Session: uia.Session,
+				}
+			}
+			cmd.Reply("No supported authentication mechanisms found")
+			return nil
+		}
+		password, ok := cmd.MainView.AskPassword("Account password", "", "correct horse battery staple", false)
+		if !ok {
+			return nil
+		}
+		return &mautrix.ReqUIAuthLogin{
+			BaseAuthData: mautrix.BaseAuthData{
+				Type:    mautrix.AuthTypePassword,
+				Session: uia.Session,
+			},
+			User:     mach.Client.UserID.String(),
+			Password: password,
+		}
+	})
+	if err != nil {
+		cmd.Reply("Failed to publish cross-signing keys: %v", err)
+		return
+	}
+
+	mach.CrossSigningKeys = keys
+}
+
+func getSSSS(cmd *Command, mach *crypto.OlmMachine) *ssss.Key {
+	_, keyData, err := mach.SSSS.GetDefaultKeyData()
+	if err != nil {
+		if errors.Is(err, mautrix.MNotFound) {
+			cmd.Reply("SSSS not set up, use `!ssss generate --set-default` first")
+		} else {
+			cmd.Reply("Failed to fetch default SSSS key data: %v", err)
+		}
+		return nil
+	}
+
+	var key *ssss.Key
+	if keyData.Passphrase != nil && keyData.Passphrase.Algorithm == ssss.PassphraseAlgorithmPBKDF2 {
+		passphrase, ok := cmd.MainView.AskPassword("Passphrase", "", "correct horse battery staple", false)
+		if !ok {
+			return nil
+		}
+		key, err = keyData.VerifyPassphrase(passphrase)
+		if errors.Is(err, ssss.ErrIncorrectSSSSKey) {
+			cmd.Reply("Incorrect passphrase")
+			return nil
+		}
+	} else {
+		recoveryKey, ok := cmd.MainView.AskPassword("Recovery key", "", "tDAK LMRH PiYE bdzi maCe xLX5 wV6P Nmfd c5mC wLef 15Fs VVSc", false)
+		if !ok {
+			return nil
+		}
+		key, err = keyData.VerifyRecoveryKey(recoveryKey)
+		if errors.Is(err, ssss.ErrInvalidRecoveryKey) {
+			cmd.Reply("Malformed recovery key")
+			return nil
+		} else if errors.Is(err, ssss.ErrIncorrectSSSSKey) {
+			cmd.Reply("Incorrect recovery key")
+			return nil
+		}
+	}
+	// All the errors should already be handled above, this is just for backup
+	if err != nil {
+		cmd.Reply("Failed to get SSSS key: %v", err)
+		return nil
+	}
+	return key
+}
+
+func cmdCrossSigningUpload(cmd *Command, mach *crypto.OlmMachine) {
+	if mach.CrossSigningKeys == nil {
+		cmd.Reply("Cross-signing keys not cached, use `!%s generate` first", cmd.OrigCommand)
+		return
+	}
+
+	key := getSSSS(cmd, mach)
+	if key == nil {
+		return
+	}
+
+	err := mach.UploadCrossSigningKeysToSSSS(key, mach.CrossSigningKeys)
+	if err != nil {
+		cmd.Reply("Failed to upload keys to SSSS: %v", err)
+	} else {
+		cmd.Reply("Successfully uploaded cross-signing keys to SSSS")
+	}
+}

ui/password-modal.go

@@ -17,6 +17,9 @@
 package ui
 
 import (
+	"fmt"
+	"strings"
+
 	"maunium.net/go/mauview"
 	"maunium.net/go/tcell"
 )
@@ -41,13 +44,20 @@ type PasswordModal struct {
 	parent *MainView
 }
 
-func (view *MainView) AskPassword(title string, isNew bool) (string, bool) {
+func (view *MainView) AskPassword(title, thing, placeholder string, isNew bool) (string, bool) {
-	pwm := NewPasswordModal(view, title, isNew)
+	pwm := NewPasswordModal(view, title, thing, placeholder, isNew)
 	view.ShowModal(pwm)
+	view.parent.Render()
 	return pwm.Wait()
 }
 
-func NewPasswordModal(parent *MainView, title string, isNew bool) *PasswordModal {
+func NewPasswordModal(parent *MainView, title, thing, placeholder string, isNew bool) *PasswordModal {
+	if placeholder == "" {
+		placeholder = "correct horse battery staple"
+	}
+	if thing == "" {
+		thing = strings.ToLower(title)
+	}
 	pwm := &PasswordModal{
 		parent:     parent,
 		form:       mauview.NewForm(),
@@ -64,13 +74,13 @@ func NewPasswordModal(parent *MainView, title string, isNew bool) *PasswordModal
 
 	pwm.text = mauview.NewTextField()
 	if isNew {
-		pwm.text.SetText("Create a passphrase")
+		pwm.text.SetText(fmt.Sprintf("Create a %s", thing))
 	} else {
-		pwm.text.SetText("Enter the passphrase")
+		pwm.text.SetText(fmt.Sprintf("Enter the %s", thing))
 	}
 	pwm.input = mauview.NewInputField().
 		SetMaskCharacter('*').
-		SetPlaceholder("correct horse battery staple")
+		SetPlaceholder(placeholder)
 	pwm.form.AddComponent(pwm.text, 1, 1, 3, 1)
 	pwm.form.AddFormItem(pwm.input, 1, 2, 3, 1)
 
@@ -78,10 +88,10 @@ func NewPasswordModal(parent *MainView, title string, isNew bool) *PasswordModal
 		height += 3
 		pwm.confirmInput = mauview.NewInputField().
 			SetMaskCharacter('*').
-			SetPlaceholder("correct horse battery staple").
+			SetPlaceholder(placeholder).
 			SetChangedFunc(pwm.HandleChange)
 		pwm.input.SetChangedFunc(pwm.HandleChange)
-		pwm.confirmText = mauview.NewTextField().SetText("Confirm passphrase")
+		pwm.confirmText = mauview.NewTextField().SetText(fmt.Sprintf("Confirm %s", thing))
 
 		pwm.form.SetRow(3, 1).SetRow(4, 1).SetRow(5, 1)
 		pwm.form.AddComponent(pwm.confirmText, 1, 4, 3, 1)
@@ -125,9 +135,9 @@ func (pwm *PasswordModal) ClickSubmit() {
 
 func (pwm *PasswordModal) Wait() (string, bool) {
 	select {
-	case result := <- pwm.outputChan:
+	case result := <-pwm.outputChan:
 		return result, true
-	case <- pwm.cancelChan:
+	case <-pwm.cancelChan:
 		return "", false
 	}
 }