mirror of
https://mau.dev/maunium/synapse.git
synced 2024-10-01 01:36:05 -04:00
91 lines
2.5 KiB
Markdown
91 lines
2.5 KiB
Markdown
# Shared-Secret Registration
|
|
|
|
This API allows for the creation of users in an administrative and
|
|
non-interactive way. This is generally used for bootstrapping a Synapse
|
|
instance with administrator accounts.
|
|
|
|
To authenticate yourself to the server, you will need both the shared secret
|
|
([`registration_shared_secret`](../usage/configuration/config_documentation.md#registration_shared_secret)
|
|
in the homeserver configuration), and a one-time nonce. If the registration
|
|
shared secret is not configured, this API is not enabled.
|
|
|
|
To fetch the nonce, you need to request one from the API:
|
|
|
|
```
|
|
> GET /_synapse/admin/v1/register
|
|
|
|
< {"nonce": "thisisanonce"}
|
|
```
|
|
|
|
Once you have the nonce, you can make a `POST` to the same URL with a JSON
|
|
body containing the nonce, username, password, whether they are an admin
|
|
(optional, False by default), and a HMAC digest of the content. Also you can
|
|
set the displayname (optional, `username` by default).
|
|
|
|
As an example:
|
|
|
|
```
|
|
> POST /_synapse/admin/v1/register
|
|
> {
|
|
"nonce": "thisisanonce",
|
|
"username": "pepper_roni",
|
|
"displayname": "Pepper Roni",
|
|
"password": "pizza",
|
|
"admin": true,
|
|
"mac": "mac_digest_here"
|
|
}
|
|
|
|
< {
|
|
"access_token": "token_here",
|
|
"user_id": "@pepper_roni:localhost",
|
|
"home_server": "test",
|
|
"device_id": "device_id_here"
|
|
}
|
|
```
|
|
|
|
The MAC is the hex digest output of the HMAC-SHA1 algorithm, with the key being
|
|
the shared secret and the content being the nonce, user, password, either the
|
|
string "admin" or "notadmin", and optionally the user_type
|
|
each separated by NULs.
|
|
|
|
Here is an easy way to generate the HMAC digest if you have Bash and OpenSSL:
|
|
|
|
```bash
|
|
# Update these values and then paste this code block into a bash terminal
|
|
nonce='thisisanonce'
|
|
username='pepper_roni'
|
|
password='pizza'
|
|
admin='admin'
|
|
secret='shared_secret'
|
|
|
|
printf '%s\0%s\0%s\0%s' "$nonce" "$username" "$password" "$admin" |
|
|
openssl sha1 -hmac "$secret" |
|
|
awk '{print $2}'
|
|
```
|
|
|
|
For an example of generation in Python:
|
|
|
|
```python
|
|
import hmac, hashlib
|
|
|
|
def generate_mac(nonce, user, password, admin=False, user_type=None):
|
|
|
|
mac = hmac.new(
|
|
key=shared_secret,
|
|
digestmod=hashlib.sha1,
|
|
)
|
|
|
|
mac.update(nonce.encode('utf8'))
|
|
mac.update(b"\x00")
|
|
mac.update(user.encode('utf8'))
|
|
mac.update(b"\x00")
|
|
mac.update(password.encode('utf8'))
|
|
mac.update(b"\x00")
|
|
mac.update(b"admin" if admin else b"notadmin")
|
|
if user_type:
|
|
mac.update(b"\x00")
|
|
mac.update(user_type.encode('utf8'))
|
|
|
|
return mac.hexdigest()
|
|
```
|