Merge remote-tracking branch 'upstream/develop' into registration-workflow

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Alex Gleason 2020-11-14 19:48:47 -06:00
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236 changed files with 5448 additions and 2802 deletions

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@ -20,12 +20,14 @@ Configuration options:
- `external`: only external users
- `active`: only active users
- `need_approval`: only unapproved users
- `unconfirmed`: only unconfirmed users
- `deactivated`: only deactivated users
- `is_admin`: users with admin role
- `is_moderator`: users with moderator role
- *optional* `page`: **integer** page number
- *optional* `page_size`: **integer** number of users per page (default is `50`)
- *optional* `tags`: **[string]** tags list
- *optional* `actor_types`: **[string]** actor type list (`Person`, `Service`, `Application`)
- *optional* `name`: **string** user display name
- *optional* `email`: **string** user email
- Example: `https://mypleroma.org/api/pleroma/admin/users?query=john&filters=local,active&page=1&page_size=10&tags[]=some_tag&tags[]=another_tag&name=display_name&email=email@example.com`

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@ -116,6 +116,10 @@ The modified chat message
This will return a list of chats that you have been involved in, sorted by their
last update (so new chats will be at the top).
Parameters:
- with_muted: Include chats from muted users (boolean).
Returned data:
```json
@ -173,11 +177,14 @@ Returned data:
"created_at": "2020-04-21T15:06:45.000Z",
"emojis": [],
"id": "12",
"unread": false
"unread": false,
"idempotency_key": "75442486-0874-440c-9db1-a7006c25a31f"
}
]
```
- idempotency_key: The copy of the `idempotency-key` HTTP request header that can be used for optimistic message sending. Included only during the first few minutes after the message creation.
### Posting a chat message
Posting a chat message for given Chat id works like this:

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@ -9,9 +9,13 @@ Pleroma uses 128-bit ids as opposed to Mastodon's 64 bits. However just like Mas
## Timelines
Adding the parameter `with_muted=true` to the timeline queries will also return activities by muted (not by blocked!) users.
Adding the parameter `exclude_visibilities` to the timeline queries will exclude the statuses with the given visibilities. The parameter accepts an array of visibility types (`public`, `unlisted`, `private`, `direct`), e.g., `exclude_visibilities[]=direct&exclude_visibilities[]=private`.
Adding the parameter `reply_visibility` to the public and home timelines queries will filter replies. Possible values: without parameter (default) shows all replies, `following` - replies directed to you or users you follow, `self` - replies directed to you.
Adding the parameter `instance=lain.com` to the public timeline will show only statuses originating from `lain.com` (or any remote instance).
## Statuses
- `visibility`: has an additional possible value `list`
@ -125,12 +129,30 @@ The `type` value is `pleroma:emoji_reaction`. Has these fields:
- `account`: The account of the user who reacted
- `status`: The status that was reacted on
### ChatMention Notification (not default)
This notification has to be requested explicitly.
The `type` value is `pleroma:chat_mention`
- `account`: The account who sent the message
- `chat_message`: The chat message
### Report Notification (not default)
This notification has to be requested explicitly.
The `type` value is `pleroma:report`
- `account`: The account who reported
- `report`: The report
## GET `/api/v1/notifications`
Accepts additional parameters:
- `exclude_visibilities`: will exclude the notifications for activities with the given visibilities. The parameter accepts an array of visibility types (`public`, `unlisted`, `private`, `direct`). Usage example: `GET /api/v1/notifications?exclude_visibilities[]=direct&exclude_visibilities[]=private`.
- `include_types`: will include the notifications for activities with the given types. The parameter accepts an array of types (`mention`, `follow`, `reblog`, `favourite`, `move`, `pleroma:emoji_reaction`). Usage example: `GET /api/v1/notifications?include_types[]=mention&include_types[]=reblog`.
- `include_types`: will include the notifications for activities with the given types. The parameter accepts an array of types (`mention`, `follow`, `reblog`, `favourite`, `move`, `pleroma:emoji_reaction`, `pleroma:chat_mention`, `pleroma:report`). Usage example: `GET /api/v1/notifications?include_types[]=mention&include_types[]=reblog`.
## DELETE `/api/v1/notifications/destroy_multiple`
@ -249,6 +271,12 @@ Has these additional fields under the `pleroma` object:
There is an additional `user:pleroma_chat` stream. Incoming chat messages will make the current chat be sent to this `user` stream. The `event` of an incoming chat message is `pleroma:chat_update`. The payload is the updated chat with the incoming chat message in the `last_message` field.
For viewing remote server timelines, there are `public:remote` and `public:remote:media` streams. Each of these accept a parameter like `?instance=lain.com`.
## User muting and thread muting
Both user muting and thread muting can be done for only a certain time by adding an `expires_in` parameter to the API calls and giving the expiration time in seconds.
## Not implemented
Pleroma is generally compatible with the Mastodon 2.7.2 API, but some newer features and non-essential features are omitted. These features usually return an HTTP 200 status code, but with an empty response. While they may be added in the future, they are considered low priority.

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@ -615,3 +615,41 @@ Emoji reactions work a lot like favourites do. They make it possible to react to
{"name": "😀", "count": 2, "me": true, "accounts": [{"id" => "xyz.."...}, {"id" => "zyx..."}]}
]
```
## `POST /api/v1/pleroma/backups`
### Create a user backup archive
* Method: `POST`
* Authentication: required
* Params: none
* Response: JSON
* Example response:
```json
[{
"content_type": "application/zip",
"file_size": 0,
"inserted_at": "2020-09-10T16:18:03.000Z",
"processed": false,
"url": "https://example.com/media/backups/archive-foobar-20200910T161803-QUhx6VYDRQ2wfV0SdA2Pfj_2CLM_ATUlw-D5l5TJf4Q.zip"
}]
```
## `GET /api/v1/pleroma/backups`
### Lists user backups
* Method: `GET`
* Authentication: not required
* Params: none
* Response: JSON
* Example response:
```json
[{
"content_type": "application/zip",
"file_size": 55457,
"inserted_at": "2020-09-10T16:18:03.000Z",
"processed": true,
"url": "https://example.com/media/backups/archive-foobar-20200910T161803-QUhx6VYDRQ2wfV0SdA2Pfj_2CLM_ATUlw-D5l5TJf4Q.zip"
}]
```

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@ -2,15 +2,37 @@
Pleroma includes support for exporting metrics via the [prometheus_ex](https://github.com/deadtrickster/prometheus.ex) library.
Config example:
```
config :prometheus, Pleroma.Web.Endpoint.MetricsExporter,
enabled: true,
auth: {:basic, "myusername", "mypassword"},
ip_whitelist: ["127.0.0.1"],
path: "/api/pleroma/app_metrics",
format: :text
```
* `enabled` (Pleroma extension) enables the endpoint
* `ip_whitelist` (Pleroma extension) could be used to restrict access only to specified IPs
* `auth` sets the authentication (`false` for no auth; configurable to HTTP Basic Auth, see [prometheus-plugs](https://github.com/deadtrickster/prometheus-plugs#exporting) documentation)
* `format` sets the output format (`:text` or `:protobuf`)
* `path` sets the path to app metrics page
## `/api/pleroma/app_metrics`
### Exports Prometheus application metrics
* Method: `GET`
* Authentication: not required
* Authentication: not required by default (see configuration options above)
* Params: none
* Response: JSON
* Response: text
## Grafana
### Config example
The following is a config example to use with [Grafana](https://grafana.com)
```

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@ -1,12 +1,23 @@
# Managing frontends
`mix pleroma.frontend install <frontend> [--ref <ref>] [--file <file>] [--build-url <build-url>] [--path <path>] [--build-dir <build-dir>]`
=== "OTP"
```sh
./bin/pleroma_ctl frontend install <frontend> [--ref <ref>] [--file <file>] [--build-url <build-url>] [--path <path>] [--build-dir <build-dir>]
```
=== "From Source"
```sh
mix pleroma.frontend install <frontend> [--ref <ref>] [--file <file>] [--build-url <build-url>] [--path <path>] [--build-dir <build-dir>]
```
Frontend can be installed either from local zip file, or automatically downloaded from the web.
You can give all the options directly on the command like, but missing information will be filled out by looking at the data configured under `frontends.available` in the config files.
You can give all the options directly on the command line, but missing information will be filled out by looking at the data configured under `frontends.available` in the config files.
Currently, known `<frontend>` values are:
Currently known `<frontend>` values are:
- [admin-fe](https://git.pleroma.social/pleroma/admin-fe)
- [kenoma](http://git.pleroma.social/lambadalambda/kenoma)
- [pleroma-fe](http://git.pleroma.social/pleroma/pleroma-fe)
@ -19,51 +30,67 @@ You can still install frontends that are not configured, see below.
For a frontend configured under the `available` key, it's enough to install it by name.
```sh tab="OTP"
./bin/pleroma_ctl frontend install pleroma
```
=== "OTP"
```sh tab="From Source"
mix pleroma.frontend install pleroma
```
```sh
./bin/pleroma_ctl frontend install pleroma
```
This will download the latest build for the the pre-configured `ref` and install it. It can then be configured as the one of the served frontends in the config file (see `primary` or `admin`).
=== "From Source"
You can override any of the details. To install a pleroma build from a different url, you could do this:
```sh
mix pleroma.frontend install pleroma
```
```sh tab="OPT"
./bin/pleroma_ctl frontend install pleroma --ref 2hu_edition --build-url https://example.org/raymoo.zip
```
This will download the latest build for the pre-configured `ref` and install it. It can then be configured as the one of the served frontends in the config file (see `primary` or `admin`).
```sh tab="From Source"
mix pleroma.frontend install pleroma --ref 2hu_edition --build-url https://example.org/raymoo.zip
```
You can override any of the details. To install a pleroma build from a different URL, you could do this:
=== "OTP"
```sh
./bin/pleroma_ctl frontend install pleroma --ref 2hu_edition --build-url https://example.org/raymoo.zip
```
=== "From Source"
```sh
mix pleroma.frontend install pleroma --ref 2hu_edition --build-url https://example.org/raymoo.zip
```
Similarly, you can also install from a local zip file.
```sh tab="OTP"
./bin/pleroma_ctl frontend install pleroma --ref mybuild --file ~/Downloads/doomfe.zip
```
=== "OTP"
```sh tab="From Source"
mix pleroma.frontend install pleroma --ref mybuild --file ~/Downloads/doomfe.zip
```
```sh
./bin/pleroma_ctl frontend install pleroma --ref mybuild --file ~/Downloads/doomfe.zip
```
The resulting frontend will always be installed into a folder of this template: `${instance_static}/frontends/${name}/${ref}`
=== "From Source"
Careful: This folder will be completely replaced on installation
```sh
mix pleroma.frontend install pleroma --ref mybuild --file ~/Downloads/doomfe.zip
```
The resulting frontend will always be installed into a folder of this template: `${instance_static}/frontends/${name}/${ref}`.
Careful: This folder will be completely replaced on installation.
## Example installation for an unknown frontend
The installation process is the same, but you will have to give all the needed options on the commond line. For example:
The installation process is the same, but you will have to give all the needed options on the command line. For example:
```sh tab="OTP"
./bin/pleroma_ctl frontend install gensokyo --ref master --build-url https://gensokyo.2hu/builds/marisa.zip
```
=== "OTP"
```sh tab="From Source"
mix pleroma.frontend install gensokyo --ref master --build-url https://gensokyo.2hu/builds/marisa.zip
```
```sh
./bin/pleroma_ctl frontend install gensokyo --ref master --build-url https://gensokyo.2hu/builds/marisa.zip
```
If you don't have a zip file but just want to install a frontend from a local path, you can simply copy the files over a folder of this template: `${instance_static}/frontends/${name}/${ref}`
=== "From Source"
```sh
mix pleroma.frontend install gensokyo --ref master --build-url https://gensokyo.2hu/builds/marisa.zip
```
If you don't have a zip file but just want to install a frontend from a local path, you can simply copy the files over a folder of this template: `${instance_static}/frontends/${name}/${ref}`.

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@ -40,3 +40,5 @@ If any of the options are left unspecified, you will be prompted interactively.
- `--strip-uploads <Y|N>` - use ExifTool to strip uploads of sensitive location data
- `--anonymize-uploads <Y|N>` - randomize uploaded filenames
- `--dedupe-uploads <Y|N>` - store files based on their hash to reduce data storage requirements if duplicates are uploaded with different filenames
- `--skip-release-env` - skip generation the release environment file
- `--release-env-file` - release environment file path

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@ -1,11 +1,41 @@
# ChatMessages
# AP Extensions
## Actor endpoints
ChatMessages are the messages sent in 1-on-1 chats. They are similar to
The following endpoints are additionally present into our actors.
- `oauthRegistrationEndpoint` (`http://litepub.social/ns#oauthRegistrationEndpoint`)
- `uploadMedia` (`https://www.w3.org/ns/activitystreams#uploadMedia`)
### oauthRegistrationEndpoint
Points to MastodonAPI `/api/v1/apps` for now.
See <https://docs.joinmastodon.org/methods/apps/>
### uploadMedia
Inspired by <https://www.w3.org/wiki/SocialCG/ActivityPub/MediaUpload>, it is part of the ActivityStreams namespace because it used to be part of the ActivityPub specification and got removed from it.
Content-Type: multipart/form-data
Parameters:
- (required) `file`: The file being uploaded
- (optionnal) `description`: A plain-text description of the media, for accessibility purposes.
Response: HTTP 201 Created with the object into the body, no `Location` header provided as it doesn't have an `id`
The object given in the reponse should then be inserted into an Object's `attachment` field.
## ChatMessages
`ChatMessage`s are the messages sent in 1-on-1 chats. They are similar to
`Note`s, but the addresing is done by having a single AP actor in the `to`
field. Addressing multiple actors is not allowed. These messages are always
private, there is no public version of them. They are created with a `Create`
activity.
They are part of the `litepub` namespace as `http://litepub.social/ns#ChatMessage`.
Example:
```json

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@ -7,97 +7,105 @@ Feel free to contact us to be added to this list!
- Homepage: <https://www.pleroma.com/#desktopApp>
- Source Code: <https://github.com/roma-apps/roma-desktop>
- Platforms: Windows, Mac, Linux
- Features: Streaming Ready
- Features: MastoAPI, Streaming Ready
### Social
- Source Code: <https://gitlab.gnome.org/World/Social>
- Contact: [@brainblasted@social.libre.fi](https://social.libre.fi/users/brainblasted)
- Platforms: Linux (GNOME)
- Note(2019-01-28): Not at a pre-alpha stage yet
- Features: MastoAPI
### Whalebird
- Homepage: <https://whalebird.org/>
- Source Code: <https://github.com/h3poteto/whalebird-desktop>
- Contact: [@h3poteto@pleroma.io](https://pleroma.io/users/h3poteto)
- Platforms: Windows, Mac, Linux
- Features: Streaming Ready
- Features: MastoAPI, Streaming Ready
## Handheld
### AndStatus
- Homepage: <http://andstatus.org/>
- Source Code: <https://github.com/andstatus/andstatus/>
- Platforms: Android
- Features: MastoAPI, ActivityPub (Client-to-Server)
### Amaroq
- Homepage: <https://itunes.apple.com/us/app/amaroq-for-mastodon/id1214116200>
- Source Code: <https://github.com/ReticentJohn/Amaroq>
- Contact: [@eurasierboy@mastodon.social](https://mastodon.social/users/eurasierboy)
- Platforms: iOS
- Features: No Streaming
- Features: MastoAPI, No Streaming
### Fedilab
- Homepage: <https://fedilab.app/>
- Source Code: <https://framagit.org/tom79/fedilab/>
- Contact: [@fedilab@framapiaf.org](https://framapiaf.org/users/fedilab)
- Platforms: Android
- Features: Streaming Ready, Moderation, Text Formatting
- Features: MastoAPI, Streaming Ready, Moderation, Text Formatting
### Kyclos
- Source Code: <https://git.pleroma.social/pleroma/harbour-kyclos>
- Platforms: SailfishOS
- Features: No Streaming
- Features: MastoAPI, No Streaming
### Husky
- Source code: <https://git.mentality.rip/FWGS/Husky>
- Contact: [@Husky@enigmatic.observer](https://enigmatic.observer/users/Husky)
- Platforms: Android
- Features: No Streaming, Emoji Reactions, Text Formatting, FE Stickers
- Features: MastoAPI, No Streaming, Emoji Reactions, Text Formatting, FE Stickers
### Fedi
- Homepage: <https://www.fediapp.com/>
- Source Code: Proprietary, but gratis
- Platforms: iOS, Android
- Features: Pleroma-specific features like Reactions
- Features: MastoAPI, Pleroma-specific features like Reactions
### Tusky
- Homepage: <https://tuskyapp.github.io/>
- Source Code: <https://github.com/tuskyapp/Tusky>
- Contact: [@ConnyDuck@mastodon.social](https://mastodon.social/users/ConnyDuck)
- Platforms: Android
- Features: No Streaming
- Features: MastoAPI, No Streaming
### Twidere
- Homepage: <https://twidere.mariotaku.org/>
- Source Code: <https://github.com/TwidereProject/Twidere-Android/>
- Contact: <me@mariotaku.org>
- Platform: Android
- Features: No Streaming
- Features: MastoAPI, No Streaming
### Indigenous
- Homepage: <https://indigenous.realize.be/>
- Source Code: <https://github.com/swentel/indigenous-android/>
- Contact: [@realize.be@realize.be](@realize.be@realize.be)
- Contact: [@swentel@realize.be](https://realize.be)
- Platforms: Android
- Features: No Streaming
- Features: MastoAPI, No Streaming
## Alternative Web Interfaces
### Brutaldon
- Homepage: <https://jfm.carcosa.net/projects/software/brutaldon/>
- Source Code: <https://git.carcosa.net/jmcbray/brutaldon>
- Contact: [@gcupc@glitch.social](https://glitch.social/users/gcupc)
- Features: No Streaming
- Features: MastoAPI, No Streaming
### Halcyon
- Source Code: <https://notabug.org/halcyon-suite/halcyon>
- Contact: [@halcyon@social.csswg.org](https://social.csswg.org/users/halcyon)
- Features: Streaming Ready
- Features: MastoAPI, Streaming Ready
### Pinafore
- Homepage: <https://pinafore.social/>
- Source Code: <https://github.com/nolanlawson/pinafore>
- Contact: [@pinafore@mastodon.technology](https://mastodon.technology/users/pinafore)
- Note: Pleroma support is a secondary goal
- Features: No Streaming
- Features: MastoAPI, No Streaming
### Sengi
- Homepage: <https://nicolasconstant.github.io/sengi/>
- Source Code: <https://github.com/NicolasConstant/sengi>
- Contact: [@sengi_app@mastodon.social](https://mastodon.social/users/sengi_app)
- Features: MastoAPI
### DashFE
- Source Code: <https://notabug.org/daisuke/DashboardFE>
@ -107,3 +115,4 @@ Feel free to contact us to be added to this list!
- Source Code: <https://git.freesoftwareextremist.com/bloat/>
- Contact: [@r@freesoftwareextremist.com](https://freesoftwareextremist.com/users/r)
- Features: Does not requires JavaScript
- Features: MastoAPI

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@ -45,6 +45,7 @@ To add configuration to your config file, you can copy it from the base config.
older software for theses nicknames.
* `max_pinned_statuses`: The maximum number of pinned statuses. `0` will disable the feature.
* `autofollowed_nicknames`: Set to nicknames of (local) users that every new user should automatically follow.
* `autofollowing_nicknames`: Set to nicknames of (local) users that automatically follows every newly registered user.
* `attachment_links`: Set to true to enable automatically adding attachment link text to statuses.
* `max_report_comment_size`: The maximum size of the report comment (Default: `1000`).
* `safe_dm_mentions`: If set to true, only mentions at the beginning of a post will be used to address people in direct messages. This is to prevent accidental mentioning of people when talking about them (e.g. "@friend hey i really don't like @enemy"). Default: `false`.
@ -1077,6 +1078,20 @@ Control favicons for instances.
* `enabled`: Allow/disallow displaying and getting instances favicons
## Pleroma.User.Backup
!!! note
Requires enabled email
* `:purge_after_days` an integer, remove backup achives after N days.
* `:limit_days` an integer, limit user to export not more often than once per N days.
* `:dir` a string with a path to backup temporary directory or `nil` to let Pleroma choose temporary directory in the following order:
1. the directory named by the TMPDIR environment variable
2. the directory named by the TEMP environment variable
3. the directory named by the TMP environment variable
4. C:\TMP on Windows or /tmp on Unix-like operating systems
5. as a last resort, the current working directory
## Frontend management
Frontends in Pleroma are swappable - you can specify which one to use here.

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@ -0,0 +1,136 @@
# Configuring Ejabberd (XMPP Server) to use Pleroma for authentication
If you want to give your Pleroma users an XMPP (chat) account, you can configure [Ejabberd](https://github.com/processone/ejabberd) to use your Pleroma server for user authentication, automatically giving every local user an XMPP account.
In general, you just have to follow the configuration described at [https://docs.ejabberd.im/admin/configuration/authentication/#external-script](https://docs.ejabberd.im/admin/configuration/authentication/#external-script). Please read this section carefully.
Copy the script below to suitable path on your system and set owner and permissions. Also do not forget adjusting `PLEROMA_HOST` and `PLEROMA_PORT`, if necessary.
```bash
cp pleroma_ejabberd_auth.py /etc/ejabberd/pleroma_ejabberd_auth.py
chown ejabberd /etc/ejabberd/pleroma_ejabberd_auth.py
chmod 700 /etc/ejabberd/pleroma_ejabberd_auth.py
```
Set external auth params in ejabberd.yaml file:
```bash
auth_method: [external]
extauth_program: "python3 /etc/ejabberd/pleroma_ejabberd_auth.py"
extauth_instances: 3
auth_use_cache: false
```
Restart / reload your ejabberd service.
After restarting your Ejabberd server, your users should now be able to connect with their Pleroma credentials.
```python
import sys
import struct
import http.client
from base64 import b64encode
import logging
PLEROMA_HOST = "127.0.0.1"
PLEROMA_PORT = "4000"
AUTH_ENDPOINT = "/api/v1/accounts/verify_credentials"
USER_ENDPOINT = "/api/v1/accounts"
LOGFILE = "/var/log/ejabberd/pleroma_auth.log"
logging.basicConfig(filename=LOGFILE, level=logging.INFO)
# Pleroma functions
def create_connection():
return http.client.HTTPConnection(PLEROMA_HOST, PLEROMA_PORT)
def verify_credentials(user: str, password: str) -> bool:
user_pass_b64 = b64encode("{}:{}".format(
user, password).encode('utf-8')).decode("ascii")
params = {}
headers = {
"Authorization": "Basic {}".format(user_pass_b64)
}
try:
conn = create_connection()
conn.request("GET", AUTH_ENDPOINT, params, headers)
response = conn.getresponse()
if response.status == 200:
return True
return False
except Exception as e:
logging.info("Can not connect: %s", str(e))
return False
def does_user_exist(user: str) -> bool:
conn = create_connection()
conn.request("GET", "{}/{}".format(USER_ENDPOINT, user))
response = conn.getresponse()
if response.status == 200:
return True
return False
def auth(username: str, server: str, password: str) -> bool:
return verify_credentials(username, password)
def isuser(username, server):
return does_user_exist(username)
def read():
(pkt_size,) = struct.unpack('>H', bytes(sys.stdin.read(2), encoding='utf8'))
pkt = sys.stdin.read(pkt_size)
cmd = pkt.split(':')[0]
if cmd == 'auth':
username, server, password = pkt.split(':', 3)[1:]
write(auth(username, server, password))
elif cmd == 'isuser':
username, server = pkt.split(':', 2)[1:]
write(isuser(username, server))
elif cmd == 'setpass':
# u, s, p = pkt.split(':', 3)[1:]
write(False)
elif cmd == 'tryregister':
# u, s, p = pkt.split(':', 3)[1:]
write(False)
elif cmd == 'removeuser':
# u, s = pkt.split(':', 2)[1:]
write(False)
elif cmd == 'removeuser3':
# u, s, p = pkt.split(':', 3)[1:]
write(False)
else:
write(False)
def write(result):
if result:
sys.stdout.write('\x00\x02\x00\x01')
else:
sys.stdout.write('\x00\x02\x00\x00')
sys.stdout.flush()
if __name__ == "__main__":
logging.info("Starting pleroma ejabberd auth daemon...")
while True:
try:
read()
except Exception as e:
logging.info(
"Error while processing data from ejabberd %s", str(e))
pass
```

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@ -0,0 +1,66 @@
# Optimizing the BEAM
Pleroma is built upon the Erlang/OTP VM known as BEAM. The BEAM VM is highly optimized for latency, but this has drawbacks in environments without dedicated hardware. One of the tricks used by the BEAM VM is [busy waiting](https://en.wikipedia.org/wiki/Busy_waiting). This allows the application to pretend to be busy working so the OS kernel does not pause the application process and switch to another process waiting for the CPU to execute its workload. It does this by spinning for a period of time which inflates the apparent CPU usage of the application so it is immediately ready to execute another task. This can be observed with utilities like **top(1)** which will show consistently high CPU usage for the process. Switching between procesess is a rather expensive operation and also clears CPU caches further affecting latency and performance. The goal of busy waiting is to avoid this penalty.
This strategy is very successful in making a performant and responsive application, but is not desirable on Virtual Machines or hardware with few CPU cores. Pleroma instances are often deployed on the same server as the required PostgreSQL database which can lead to situations where the Pleroma application is holding the CPU in a busy-wait loop and as a result the database cannot process requests in a timely manner. The fewer CPUs available, the more this problem is exacerbated. The latency is further amplified by the OS being installed on a Virtual Machine as the Hypervisor uses CPU time-slicing to pause the entire OS and switch between other tasks.
More adventurous admins can be creative with CPU affinity (e.g., *taskset* for Linux and *cpuset* on FreeBSD) to pin processes to specific CPUs and eliminate much of this contention. The most important advice is to run as few processes as possible on your server to achieve the best performance. Even idle background processes can occasionally create [software interrupts](https://en.wikipedia.org/wiki/Interrupt) and take attention away from the executing process creating latency spikes and invalidation of the CPU caches as they must be cleared when switching between processes for security.
Please only change these settings if you are experiencing issues or really know what you are doing. In general, there's no need to change these settings.
## VPS Provider Recommendations
### Good
* Hetzner Cloud
### Bad
* AWS (known to use burst scheduling)
## Example configurations
Tuning the BEAM requires you provide a config file normally called [vm.args](http://erlang.org/doc/man/erl.html#emulator-flags). If you are using systemd to manage the service you can modify the unit file as such:
`ExecStart=/usr/bin/elixir --erl '-args_file /opt/pleroma/config/vm.args' -S /usr/bin/mix phx.server`
Check your OS documentation to adopt a similar strategy on other platforms.
### Virtual Machine and/or few CPU cores
Disable the busy-waiting. This should generally only be done if you're on a platform that does burst scheduling, like AWS.
**vm.args:**
```
+sbwt none
+sbwtdcpu none
+sbwtdio none
```
### Dedicated Hardware
Enable more busy waiting, increase the internal maximum limit of BEAM processes and ports. You can use this if you run on dedicated hardware, but it is not necessary.
**vm.args:**
```
+P 16777216
+Q 16777216
+K true
+A 128
+sbt db
+sbwt very_long
+swt very_low
+sub true
+Mulmbcs 32767
+Mumbcgs 1
+Musmbcs 2047
```
## Additional Reading
* [WhatsApp: Scaling to Millions of Simultaneous Connections](https://www.erlang-factory.com/upload/presentations/558/efsf2012-whatsapp-scaling.pdf)
* [Preemptive Scheduling and Spinlocks](https://www.uio.no/studier/emner/matnat/ifi/nedlagte-emner/INF3150/h03/annet/slides/preemptive.pdf)
* [The Curious Case of BEAM CPU Usage](https://stressgrid.com/blog/beam_cpu_usage/)

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@ -21,3 +21,26 @@ This document contains notes and guidelines for Pleroma developers.
## Auth-related configuration, OAuth consumer mode etc.
See `Authentication` section of [the configuration cheatsheet](configuration/cheatsheet.md#authentication).
## MRF policies descriptions
If MRF policy depends on config, it can be added into MRF tab to adminFE by adding `config_description/0` method, which returns map with special structure.
Example:
```elixir
%{
key: :mrf_activity_expiration,
related_policy: "Pleroma.Web.ActivityPub.MRF.ActivityExpirationPolicy",
label: "MRF Activity Expiration Policy",
description: "Adds automatic expiration to all local activities",
children: [
%{
key: :days,
type: :integer,
description: "Default global expiration time for all local activities (in days)",
suggestions: [90, 365]
}
]
}
```

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@ -13,6 +13,7 @@ It assumes that you have administrative rights, either as root or a user with [s
* `erlang-parsetools`
* `erlang-xmerl`
* `git`
* `file-dev`
* Development Tools
* `cmake`
@ -42,7 +43,7 @@ sudo apk upgrade
* Install some tools, which are needed later:
```shell
sudo apk add git build-base cmake
sudo apk add git build-base cmake file-dev
```
### Install Elixir and Erlang

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@ -10,6 +10,7 @@ This guide will assume that you have administrative rights, either as root or a
* `git`
* `base-devel`
* `cmake`
* `file`
#### Optional packages used in this guide
@ -30,7 +31,7 @@ sudo pacman -Syu
* Install some of the above mentioned programs:
```shell
sudo pacman -S git base-devel elixir cmake
sudo pacman -S git base-devel elixir cmake file
```
### Install PostgreSQL

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@ -10,6 +10,7 @@ This guide will assume you are on Debian Stretch. This guide should also work wi
* `elixir` (1.8+, Follow the guide to install from the Erlang Solutions repo or use [asdf](https://github.com/asdf-vm/asdf) as the pleroma user)
* `erlang-dev`
* `erlang-nox`
* `libmagic-dev`
* `git`
* `build-essential`
* `cmake`
@ -34,7 +35,7 @@ sudo apt full-upgrade
* Install some of the above mentioned programs:
```shell
sudo apt install git build-essential postgresql postgresql-contrib cmake
sudo apt install git build-essential postgresql postgresql-contrib cmake libmagic-devel
```
### Install Elixir and Erlang
@ -100,6 +101,7 @@ sudo -Hu pleroma mix deps.get
mv config/{generated_config.exs,prod.secret.exs}
```
* The previous command creates also the file `config/setup_db.psql`, with which you can create the database:
```shell

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@ -17,6 +17,7 @@
- `git`
- `build-essential`
- `cmake`
- `libmagic-dev`
#### このガイドで利用している追加パッケージ
@ -36,7 +37,7 @@ sudo apt full-upgrade
* 上記に挙げたパッケージをインストールしておきます。
```
sudo apt install git build-essential postgresql postgresql-contrib cmake ffmpeg imagemagick
sudo apt install git build-essential postgresql postgresql-contrib cmake ffmpeg imagemagick libmagic-dev
```
### ElixirとErlangをインストールします

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@ -29,6 +29,7 @@ Gentoo quite pointedly does not come with a cron daemon installed, and as such i
* `dev-lang/elixir`
* `dev-vcs/git`
* `dev-util/cmake`
* `sys-apps/file`
#### Optional ebuilds used in this guide
@ -50,7 +51,7 @@ Gentoo quite pointedly does not come with a cron daemon installed, and as such i
* Emerge all required the required and suggested software in one go:
```shell
# emerge --ask dev-db/postgresql dev-lang/elixir dev-vcs/git www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx dev-util/cmake
# emerge --ask dev-db/postgresql dev-lang/elixir dev-vcs/git www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx dev-util/cmake sys-apps/file
```
If you would not like to install the optional packages, remove them from this line.

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@ -27,22 +27,23 @@ Other than things bundled in the OTP release Pleroma depends on:
* PostgreSQL (also utilizes extensions in postgresql-contrib)
* nginx (could be swapped with another reverse proxy but this guide covers only it)
* certbot (for Let's Encrypt certificates, could be swapped with another ACME client, but this guide covers only it)
* libmagic/file
=== "Alpine"
```
echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories
apk update
apk add curl unzip ncurses postgresql postgresql-contrib nginx certbot
apk add curl unzip ncurses postgresql postgresql-contrib nginx certbot file-dev
```
=== "Debian/Ubuntu"
```
apt install curl unzip libncurses5 postgresql postgresql-contrib nginx certbot
apt install curl unzip libncurses5 postgresql postgresql-contrib nginx certbot libmagic-dev
```
### Installing optional packages
Per [`docs/installation/optional/media_graphics_packages.md`](docs/installation/optional/media_graphics_packages.md):
Per [`docs/installation/optional/media_graphics_packages.md`](optional/media_graphics_packages.md):
* ImageMagick
* ffmpeg
* exiftool
@ -158,7 +159,7 @@ su pleroma -s $SHELL -lc "./bin/pleroma_ctl migrate"
# su pleroma -s $SHELL -lc "./bin/pleroma_ctl migrate --migrations-path priv/repo/optional_migrations/rum_indexing/"
# Start the instance to verify that everything is working as expected
su pleroma -s $SHELL -lc "./bin/pleroma daemon"
su pleroma -s $SHELL -lc "export $(cat /opt/pleroma/config/pleroma.env); ./bin/pleroma daemon"
# Wait for about 20 seconds and query the instance endpoint, if it shows your uri, name and email correctly, you are configured correctly
sleep 20 && curl http://localhost:4000/api/v1/instance
@ -310,4 +311,3 @@ This will create an account withe the username of 'joeuser' with the email addre
## Questions
Questions about the installation or didnt it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.