1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
// Copyright 2017 Vector Creations Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"crypto/hmac"
"crypto/sha1"
"encoding/hex"
"encoding/json"
"flag"
"fmt"
"io"
"net/http"
"os"
"regexp"
"strings"
"time"
"github.com/tidwall/gjson"
"github.com/sirupsen/logrus"
"golang.org/x/term"
"github.com/matrix-org/dendrite/setup"
)
const usage = `Usage: %s
Creates a new user account on the homeserver.
Example:
# provide password by parameter
%s --config dendrite.yaml -username alice -password foobarbaz
# use password from file
%s --config dendrite.yaml -username alice -passwordfile my.pass
# ask user to provide password
%s --config dendrite.yaml -username alice
# read password from stdin
%s --config dendrite.yaml -username alice -passwordstdin < my.pass
cat my.pass | %s --config dendrite.yaml -username alice -passwordstdin
Arguments:
`
var (
username = flag.String("username", "", "The username of the account to register (specify the localpart only, e.g. 'alice' for '@alice:domain.com')")
password = flag.String("password", "", "The password to associate with the account")
pwdFile = flag.String("passwordfile", "", "The file to use for the password (e.g. for automated account creation)")
pwdStdin = flag.Bool("passwordstdin", false, "Reads the password from stdin")
isAdmin = flag.Bool("admin", false, "Create an admin account")
resetPassword = flag.Bool("reset-password", false, "Deprecated")
serverURL = flag.String("url", "https://localhost:8448", "The URL to connect to.")
validUsernameRegex = regexp.MustCompile(`^[0-9a-z_\-=./]+$`)
)
var cl = http.Client{
Timeout: time.Second * 10,
Transport: http.DefaultTransport,
}
func main() {
name := os.Args[0]
flag.Usage = func() {
_, _ = fmt.Fprintf(os.Stderr, usage, name, name, name, name, name, name)
flag.PrintDefaults()
}
cfg := setup.ParseFlags(true)
if *resetPassword {
logrus.Fatalf("The reset-password flag has been replaced by the POST /_dendrite/admin/resetPassword/{localpart} admin API.")
}
if cfg.ClientAPI.RegistrationSharedSecret == "" {
logrus.Fatalln("Shared secret registration is not enabled, enable it by setting a shared secret in the config: 'client_api.registration_shared_secret'")
}
if *username == "" {
flag.Usage()
os.Exit(1)
}
if !validUsernameRegex.MatchString(*username) {
logrus.Warn("Username can only contain characters a-z, 0-9, or '_-./='")
os.Exit(1)
}
if len(fmt.Sprintf("@%s:%s", *username, cfg.Global.ServerName)) > 255 {
logrus.Fatalf("Username can not be longer than 255 characters: %s", fmt.Sprintf("@%s:%s", *username, cfg.Global.ServerName))
}
pass, err := getPassword(*password, *pwdFile, *pwdStdin, os.Stdin)
if err != nil {
logrus.Fatalln(err)
}
accessToken, err := sharedSecretRegister(cfg.ClientAPI.RegistrationSharedSecret, *serverURL, *username, pass, *isAdmin)
if err != nil {
logrus.Fatalln("Failed to create the account:", err.Error())
}
logrus.Infof("Created account: %s (AccessToken: %s)", *username, accessToken)
}
type sharedSecretRegistrationRequest struct {
User string `json:"username"`
Password string `json:"password"`
Nonce string `json:"nonce"`
MacStr string `json:"mac"`
Admin bool `json:"admin"`
}
func sharedSecretRegister(sharedSecret, serverURL, localpart, password string, admin bool) (accesToken string, err error) {
registerURL := fmt.Sprintf("%s/_synapse/admin/v1/register", serverURL)
nonceReq, err := http.NewRequest(http.MethodGet, registerURL, nil)
if err != nil {
return "", fmt.Errorf("unable to create http request: %w", err)
}
nonceResp, err := cl.Do(nonceReq)
if err != nil {
return "", fmt.Errorf("unable to get nonce: %w", err)
}
body, err := io.ReadAll(nonceResp.Body)
if err != nil {
return "", fmt.Errorf("failed to read response body: %w", err)
}
defer nonceResp.Body.Close() // nolint: errcheck
nonce := gjson.GetBytes(body, "nonce").Str
adminStr := "notadmin"
if admin {
adminStr = "admin"
}
reg := sharedSecretRegistrationRequest{
User: localpart,
Password: password,
Nonce: nonce,
Admin: admin,
}
macStr, err := getRegisterMac(sharedSecret, nonce, localpart, password, adminStr)
if err != nil {
return "", err
}
reg.MacStr = macStr
js, err := json.Marshal(reg)
if err != nil {
return "", fmt.Errorf("unable to marshal json: %w", err)
}
registerReq, err := http.NewRequest(http.MethodPost, registerURL, bytes.NewBuffer(js))
if err != nil {
return "", fmt.Errorf("unable to create http request: %w", err)
}
regResp, err := cl.Do(registerReq)
if err != nil {
return "", fmt.Errorf("unable to create account: %w", err)
}
defer regResp.Body.Close() // nolint: errcheck
if regResp.StatusCode < 200 || regResp.StatusCode >= 300 {
body, _ = io.ReadAll(regResp.Body)
return "", fmt.Errorf(gjson.GetBytes(body, "error").Str)
}
r, _ := io.ReadAll(regResp.Body)
return gjson.GetBytes(r, "access_token").Str, nil
}
func getRegisterMac(sharedSecret, nonce, localpart, password, adminStr string) (string, error) {
joined := strings.Join([]string{nonce, localpart, password, adminStr}, "\x00")
mac := hmac.New(sha1.New, []byte(sharedSecret))
_, err := mac.Write([]byte(joined))
if err != nil {
return "", fmt.Errorf("unable to construct mac: %w", err)
}
regMac := mac.Sum(nil)
return hex.EncodeToString(regMac), nil
}
func getPassword(password, pwdFile string, pwdStdin bool, r io.Reader) (string, error) {
// read password from file
if pwdFile != "" {
pw, err := os.ReadFile(pwdFile)
if err != nil {
return "", fmt.Errorf("Unable to read password from file: %v", err)
}
return strings.TrimSpace(string(pw)), nil
}
// read password from stdin
if pwdStdin {
data, err := io.ReadAll(r)
if err != nil {
return "", fmt.Errorf("Unable to read password from stdin: %v", err)
}
return strings.TrimSpace(string(data)), nil
}
// If no parameter was set, ask the user to provide the password
if password == "" {
fmt.Print("Enter Password: ")
bytePassword, err := term.ReadPassword(int(os.Stdin.Fd()))
if err != nil {
return "", fmt.Errorf("Unable to read password: %v", err)
}
fmt.Println()
fmt.Print("Confirm Password: ")
bytePassword2, err := term.ReadPassword(int(os.Stdin.Fd()))
if err != nil {
return "", fmt.Errorf("Unable to read password: %v", err)
}
fmt.Println()
if strings.TrimSpace(string(bytePassword)) != strings.TrimSpace(string(bytePassword2)) {
return "", fmt.Errorf("Entered passwords don't match")
}
return strings.TrimSpace(string(bytePassword)), nil
}
return password, nil
}
|
