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This program is free software: you can redistribute it and/or modify
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the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Copyright (c) 2020-2021 The Oxen Project
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# Session File Server
This is the Session file server that hosts encrypted avatars and attachments for the Session
network. It is effectively a "dumb" store of data as it simply stores, retrieves, and expires but
cannot read the encrypted blobs.
It has one additional feature used by Session which is acting as a cache and server of the current
version of Session (as posted on GitHub) to allow Session clients to check the version without
leaking metadata (by making an onion request through the Oxen service node network).
## Requires
### Python3
A reasonably recent version of Python 3 (3.8 or newer are tested, earlier may or may not work), with
the following modules installed. (Most of these are available as `apt install python3-NAME` on
Debian/Ubuntu).
- flask
- coloredlogs
- psycopg 3.x (*not* the older psycopg2 currently found in most linux distros)
- psycopg_pool
- requests
Additionally you need to build the Oxen Project's pyoxenmq and pylibonionreq. This repository links
to them as submodules; `make` will build them locally for simple setups (proper deb packaging of
those libs is still a TODO).
### WSGI request handler
The file server uses WSGI for incoming HTTP requests. See below for one possible way to set this
up.
### PostgreSQL
Everything is stored in PostgreSQL; no local file storage is used at all.
## Getting started
0. Create a user, clone the code as a user, run the code as a user, NOT as root.
1. Install the required Python packages:
```bash
sudo apt install python3 python3-flask python3-coloredlogs python3-requests python3-pip
pip3 install psycopg psycopg_pool # Or as above, once these enter Debian/Ubuntu
```
2. Build the required oxen Python modules:
make
3. Set up a postgresql database for the files to live in. Note that this can be *large* because
file content is stored in the database, so ensure it is on a filesystem with lots of available
storage.
A quick setup, if you've never used it before, is:
```bash
sudo apt install postgresql-server postgresql-client # Install server and client
sudo su - postgres # Change to postgres system user
createuser YOURUSER # Replace with your username, *NOT* root
createdb -O YOURUSER sessionfiles # Creates an empty database for session files, owned by you
exit # Exit the postgres shell, return to your user
# Test that postgresql lets us connect to the database:
echo "select 'hello'" | psql sessionfiles
# Should should you "ok / ---- / hello"; if it gives an error then something is wrong.
# Load the database structure (run this from the session-file-server dir):
psql -f schema.pgsql sessionfiles
# The 'sessionfiles' database is now ready to go.
```
4. Copy `config.py.sample` to `config.py` and edit as needed. In particular you'll need to edit the
`pgsql_connect_opts` variable to specify database connection parameters.
5. Set up the application to run via wsgi. The setup I use is:
1. Install `uwsgi-emperor` and `uwsgi-plugin-python3`
1. Configure it by adding `cap = setgid,setuid` and `emperor-tyrant = true` into
`/etc/uwsgi-emperor/emperor.ini`
1. Create a file `/etc/uwsgi-emperor/vassals/sfs.ini` with content:
```ini
[uwsgi]
chdir = /home/YOURUSER/session-file-server
socket = sfs.wsgi
chmod-socket = 660
plugins = python3,logfile
processes = 4
manage-script-name = true
mount = /=fileserver:app
logger = file:logfile=/home/YOURUSER/session-file-server/sfs.log
```
You will need to change the `chdir` and `logger` paths to match where you have set up the
code.
6. Run:
```bash
sudo chown YOURUSER:www-data /etc/uwsgi-emperor/vassals/sfs.ini
```
Because of the configuration you added in step 5, the ownership of the `sfs.ini` determines the
user and group the program runs as. Also note that uwsgi sensibly refuses to run as root, but if
you are contemplating running this program in the first place then hopefully you knew not to do
that anyway.
7. Set up nginx or apache2 to serve HTTP or HTTPS requests that are handled by the file server.
- For nginx you want this snippet added to your `/etc/nginx/sites-enabled/SITENAME` file
(SITENAME can be `default` if you will only use the web server for the Session file server).:
```nginx
location / {
uwsgi_pass unix:///home/YOURUSER/session-file-server/sfs.wsgi;
include uwsgi_params;
}
```
- If you prefer to use Apache then you want to use a
```apache
ProxyPass / unix:/home/YOURUSER/session-file-server/sfs.wsgi|uwsgi://uwsgi-session-file-server/
```
directive in `<VirtualHost>` section serving the site.
8. If you want to use HTTPS then set it up in nginx or apache and put the above directives in the
location for the HTTPS server. This will work but is *not* required for Session and does not
enhance the security because requests are always onion encrypted; the extra layer of HTTPS
encryption adds nothing (and makes requests marginally slower).
9. Restart the web server and UWSGI emperor: `systemctl restart nginx uwsgi-emperor`
10. In the future, if you update the file server code and want to restart it, you can just `touch
/etc/uwsgi-emperor/vassals/` — uwsgi-emperor watches the files for modifications and restarts
gracefully upon modifications (or in this case simply touching, which updates the file's
modification time without changing its content).

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from config_base import *
# Configuration options
#
# This file overrides things set in config_base.py; put local modifications here so that on upgrades
# you don't have to merge new changes added to the base config. This file (when copied to
# local_config.py) is ignored by git.
# Example config override:
#BACKWARDS_COMPAT_IDS = False
# This one is pretty much always needed. For a local DB you'll need at least the dbname; for a
# remote DB you'll need more. See psycopg documentation for details.
pgsql_connect_opts = {
"dbname": "sessionfiles",
}
# Log level:
#
#import logging
#log_level = logging.INFO

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# Configuration options
#
import logging
# This sucks: current versions of Session are entirely inflexible as to the data received: they
# *must* get back an integer value for the id, and shove the integer into a double which means we
# can only (perfectly) represent integers from [0, 2^53].
BACKWARDS_COMPAT_IDS = True
# Use this bit suffix in generated backwards compatible integer IDs. This is intended to avoid
# synchronization conflicts when setting up multi-master database synchronization. The bits added
# here (which must be an array of 0 or 1s) will be hard-coded into the most significant bits of the
# value, then the remaining 53-bit determined randomly. E.g. 1 reserved bit is enough for 2
# servers, 2 is enough for 4, etc. Each server in a cluster should have a different bit pattern
# with exactly the same number of fixed bits. Should be empty for a single server file server.
BACKWARDS_COMPAT_IDS_FIXED_BITS = []
# Maximum file size we will accept, in bytes. This should generally be the same as Session's value,
# and has to be small enough that it can fit, post-base64 encoding + onion wrapping, into the 10MB
# size limit of storage server messages.
MAX_FILE_SIZE = 6_000_000
# Same as above, but for a base64-encoded string
MAX_FILE_SIZE_B64 = 8_000_000
# File expiry, in a postgresql-compatible duration relative to `now()`. Be aware if using `days` or
# larger units that postgresql days and months are variable: a day could be 23-25 hours (if it
# crosses a DST change), and a month could be 28-31 days ± 1 hour. If you need a precise interval,
# use a precise unit.
FILE_EXPIRY = '3 weeks'
# postgresql connect options
pgsql_connect_opts = {
"dbname": "sessionfiles",
}
# The log level
log_level = logging.WARN

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openapi: 3.0.1
info:
title: Session File Server
description: >
API documentation for the Session file server. This is the API that
[Session](https://getsession.org) and related tools use to interface with encrypted, stored
files that are sent to and retrieved from the file server via onion requests.
contact:
name: The Oxen Project
email: team@oxen.io
url: https://getsession.org
license:
name: GPL v3.0
url: https://www.gnu.org/licenses/gpl-3.0.en.html
version: "3.0"
externalDocs:
description: Find out more about the Oxen project
url: http://oxen.io
paths:
/file:
post:
summary: "Uploads a file to the file server."
description: >
Uploads an opaque file (typically encrypted) to the file server. This takes the file body
as binary.
This endpoint de-duplicates: that is, uploading an identical file body (which also implies
identical encryption) will *not* store the file a second time: instead it just updates the
file expiry.
requestBody:
description: The file content, in bytes.
required: true
content:
'*/*':
{}
responses:
200:
description: File successfully stored
content:
application/json:
schema:
type: object
properties:
id:
type: string
description: >
Random string id of the file on the server to be used in the `/file/ID`
endpoint for retrieval. Will contain only path-safe characters from
`[a-zA-Z0-9_-]`.
Currently this identifier is a 44 character value (264 bits, in base64
encoding, chosen to be the smallest padding-free base64 encodable size >= 256
bits), but that may change in future versions and should not be relied upon.
413:
description: >
Invalid upload size. Returns for an invalid size (i.e. greater than the current limit
of 6MB; *note: 6MB != 6MiB*).
content: {}
/file/{fileId}:
get:
summary: Retrieve a stored file.
description: >
Retrieves a file stored on the file server. The file is returned as binary.
parameters:
- name: fileId
in: path
description: "The file ID of the uploaded file."
required: true
schema:
type: string
responses:
200:
description: File successfully retrieved.
content:
application/octet-stream:
schema:
type: string
format: binary
404:
description: The file was not found or has expired.
content: {}
/file/{fileId}/info:
get:
summary: Retrieves metadata of a stored file.
description: >
Returns information about a file without actually returning the file content itself.
parameters:
- $ref: "#/file/~1file~1%7BfileId%7D/parameters/0"
responses:
200:
description: File metadata retrieved.
content:
application/json:
schema:
type: object
properties:
size:
type: integer
format: int64
description: Size of the file contents, in bytes.
uploaded:
type: number
format: double
description: The unix timestamp when the file was uploaded.
expires:
type: number
format: double
description: >
The unix timestamp when the file is scheduled to be removed.
404:
description: The file was not found or has expired.
content: {}
/session_version:
get:
summary: Retrieves the latest Session release version.
deprecated: True
description: >
Returns the current version of session for one of the three platforms (desktop, ios, or
android); this is effectively proxying (and caching) the response from the github release
page.
Note that the value is cached and can be up to 30 minutes out of date normally, and up to 24
hours out of date if we cannot reach the Github API for some reason.
parameters:
- name: platform
in: query
required: true
description: The session platform to query.
schema:
type: string
format: int32
enum: ["desktop", "android", "ios"]
responses:
200:
description: Version retrieved.
content:
application/json:
schema:
type: object
properties:
status_code: >
The value 200. Included for backwards compatibility, and may be removed
someday.
result:
type: string
description: The Session version.
updated:
type: number
format: double
description: >
The unix timestamp when this version was retrieved from Github; this can be up
to 24 hours ago in case of consistent fetch errors, though normally will be
within the last 30 minutes.
404:
description: "No such platform: the `platform` value was invalid."
content: {}
502:
description: >
Bad gateway. Returned if the current version could not be successfuly retrieved from
Github within the last 24 hours.
content: {}
/files:
post:
deprecated: true
summary: Uploads a file to the file server wastefully.
description: >
Uploads an opaque file (typically encrypted) to the file server. This takes the file body
as a json parameter, encoded in base64. It is mainly provided for backwards compatibility:
see the `/file` endpoint which uses 25% less data by avoiding an unnecessary extra layer of
base64 encoding.
This endpoint also always returns the file id as an integer in the range [0, 2^53], and does
not de-duplicate identical uploads.
This is deprecated and will be removed in the future once all known users have migrated to
the `/file` endpoint.
requestBody:
required: true
content:
application/json:
schema:
type: object
required: [file]
properties:
file:
type: string
format: byte
description: The file content (typically encrypted), in base64 encoding.
responses:
200:
description: File successfully stored
content:
application/json:
schema:
type: object
properties:
id:
type: integer
format: int64
description: >
Random id of the file on the server to be used in the `/files/ID`
endpoint for retrieval. Will be a value between 1 and 2^53.
This endpoint is deprecated for Session clients that would break with a
non-integer identifier; the more efficient and robust `/file` endpoint should
be used instead.
413:
description: >
Invalid upload size. Returns for an invalid size (i.e. greater than the current limit
of 6MB). Note that the size here refers to the size in decoded bytes, not the size of
the base64 encoded value; in base64 encoded bytes the limit is 8MB.
content: {}
507:
description: >
Insufficient storage. This is returned if the file server is unable to find a suitable
random id for the upload.
content: {}
/files/{fileId}:
get:
deprecated: true
summary: Retrieve a stored file wastefully.
description: >
Retrieves a file stored on the file server. The file is returned wrapped in an unnecessary
layer of JSON and base64, for backwards compatibility.
parameters:
- $ref: "#/file/~1file~1%7BfileId%7D/parameters/0"
responses:
200:
description: File successfully retrieved.
content:
application/json:
schema:
type: object
properties:
status_code:
type: integer
format: int32
description: >
The value 200. Included for backwards compatibility.
result:
type: string
format: byte
description: The file content, encoded in base64.
# vim:sw=2:et:tw=100

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#!/usr/bin/env python3
import flask
from flask import request, g
import base64
import coloredlogs
from hashlib import blake2b
import json
import logging
import psycopg
from psycopg_pool import ConnectionPool
import requests
import secrets
from werkzeug.local import LocalProxy
import config
from timer import timer
# error status codes:
HTTP_ERROR_PAYLOAD_TOO_LARGE = 413
HTTP_ERROR_INSUFFICIENT_STORAGE = 507
HTTP_ERROR_INTERNAL_SERVER_ERROR = 500
HTTP_BAD_GATEWAY = 502
HTTP_BAD_REQUEST = 400
HTTP_NOT_FOUND = 404
if config.BACKWARDS_COMPAT_IDS:
assert all(x in (0, 1) for x in config.BACKWARDS_COMPAT_IDS_FIXED_BITS)
BACKWARDS_COMPAT_MSB = sum(
y << x for x, y in enumerate(reversed(config.BACKWARDS_COMPAT_IDS_FIXED_BITS)))
BACKWARDS_COMPAT_RANDOM_BITS = 53 - len(config.BACKWARDS_COMPAT_IDS_FIXED_BITS)
app = flask.Flask(__name__)
psql_pool = ConnectionPool(min_size=2, max_size=32, **config.pgsql_connect_opts, autocommit=True)
coloredlogs.install(level=config.log_level, milliseconds=True, isatty=True)
def get_psql_conn():
if 'psql' not in g:
g.psql = psql_pool.getconn()
return g.psql
@app.teardown_appcontext
def release_psql_conn(exception):
psql = g.pop('psql', None)
if psql is not None:
psql_pool.putconn(psql)
psql = LocalProxy(get_psql_conn)
@timer(15)
def periodic(signum):
with app.app_context(), psql, psql.cursor() as cur:
cur.execute("DELETE FROM files WHERE expiry <= NOW()")
psql.commit()
# NB: we do this infrequently (once every 30 minutes, per project) because Github rate
# limits if you make more than 60 requests in an hour.
# Limit to 1 because, if there are more than 1 outdated, it doesn't hurt anything to delay
# the next one by 30 seconds (and avoids triggering github rate limiting).
cur.execute("""
SELECT project, version FROM release_versions
WHERE updated < NOW() + '30 minutes ago' LIMIT 1""")
row = cur.fetchone()
if row:
project, old_v = row
v = requests.get(
'https://api.github.com/repos/{}/releases/latest'.format(project),
timeout=5
).json()['tag_name']
if v != old_v:
logging.info("{} latest release version changed from {} to {}".format(
project, old_v, v))
cur.execute("""
UPDATE release_versions SET updated = NOW(), version = %s
WHERE project = %s""", (v, project))
def error_resp(code):
"""
Simple JSON error response to send back, embedded as `status_code` and also as the HTTP response
code.
"""
return flask.Response(
json.dumps({'status_code': code}),
status=code,
mimetype='application/json')
def generate_file_id(data):
"""
Generate a file ID by blake2b hashing the file body, then using a 33-byte digest encoded into 44
base64 chars. (Ideally would be 32, but that would result in base64 padding, so increased to 33
to fit perfectly).
"""
return base64.urlsafe_b64encode(
blake2b(data, digest_size=33, salt=b'SessionFileSvr\0\0').digest()).decode()
@app.route('/file', methods=['POST'])
def submit_file(*, body=None, deprecated=False):
if body is None:
body = request.data
if not 0 < len(body) <= config.MAX_FILE_SIZE:
logging.warn("Rejecting upload of size {} ∉ (0, {}]".format(
len(body), config.MAX_FILE_SIZE))
return error_resp(HTTP_ERROR_PAYLOAD_TOO_LARGE)
id = None
try:
if config.BACKWARDS_COMPAT_IDS:
done = False
for attempt in range(25):
id = (BACKWARDS_COMPAT_MSB << BACKWARDS_COMPAT_RANDOM_BITS
| secrets.randbits(BACKWARDS_COMPAT_RANDOM_BITS))
if not deprecated:
id = str(id) # New ids are always strings; legacy requests require an integer
try:
with psql.cursor() as cur:
cur.execute(
"INSERT INTO files (id, data, expiry) VALUES (%s, %s, NOW() + %s)",
(id, body, config.FILE_EXPIRY))
except psycopg.errors.UniqueViolation:
continue
done = True
break
if not done:
logging.error(
"Tried 25 random IDs and got all constraint failures, something getting wrong!")
return error_resp(HTTP_ERROR_INSUFFICIENT_STORAGE)
else:
with psql.transaction(), psql.cursor() as cur:
id = generate_file_id(body)
try:
# Don't pass the data yet because we might be de-duplicating
with psql.transaction():
cur.execute(
"INSERT INTO files (id, data, expiry) VALUES (%s, '', NOW() + %s)",
(id, config.FILE_EXPIRY))
except psycopg.errors.UniqueViolation:
# Found a duplicate id, so de-duplicate by just refreshing the expiry
cur.execute(
"UPDATE files SET uploaded = NOW(), expiry = NOW() + %s WHERE id = %s",
(config.FILE_EXPIRY, id))
else:
cur.execute("UPDATE files SET data = %s WHERE id = %s", (body, id))
except Exception as e:
logging.error("Failed to insert file: {}".format(e))
return error_resp(HTTP_ERROR_INTERNAL_SERVER_ERROR)
response = {"id": id}
if deprecated:
response['status_code'] = 200
return flask.jsonify(response)
@app.route('/files', methods=['POST'])
def submit_file_old():
input = request.json()
if input is None or 'file' not in input:
logging.warn("Invalid request: did not find json with a 'file' property")
return error_resp(HTTP_BAD_REQUEST)
body = input['file']
if not 0 < len(body) <= config.MAX_FILE_SIZE_B64:
logging.warn("Rejecting upload of b64-encoded size {} ∉ (0, {}]".format(
len(body), config.MAX_FILE_SIZE_B64))
return error_resp(HTTP_ERROR_PAYLOAD_TOO_LARGE)
# base64.b64decode is picky about padding (but not, by default, about random non-alphabet
# characters in the middle of the data, wtf!)
while len(body) % 4 != 0:
body += '='
body = base64.b64decode(body, validate=True)
return submit_file(body=body)
@app.route('/file/<id>')
def get_file(id):
with psql.cursor() as cur:
cur.execute("SELECT data FROM files WHERE id = %s", (id,), binary=True)
row = cur.fetchone()
if row:
response = flask.make_response(row[0].tobytes())
response.headers.set('Content-Type', 'application/octet-stream')
return response
else:
logging.warn("File '{}' does not exist".format(id))
return error_resp(HTTP_NOT_FOUND)
@app.route('/files/<id>')
def get_file_old(id):
with psql.cursor() as cur:
cur.execute("SELECT data FROM files WHERE id = %s", (id,), binary=True)
row = cur.fetchone()
if row:
return flask.jsonify({
"status_code": 200,
"result": base64.b64encode(row[0])
})
else:
logging.warn("File '{}' does not exist".format(id))
return error_resp(HTTP_NOT_FOUND)
@app.route('/file/<id>/info')
def get_file_info(id):
with psql.cursor() as cur:
cur.execute("SELECT length(data), uploaded, expiry FROM files WHERE id = %s", (id,))
row = cur.fetchone()
if row:
return flask.jsonify({
"size": row[0],
"uploaded": row[1].timestamp(),
"expires": row[2].timestamp()
})
else:
logging.warn("File '{}' does not exist".format(id))
return error_resp(HTTP_NOT_FOUND)
@app.route('/session_version')
def get_session_version():
platform = request.args['platform']
if platform not in ('desktop', 'android', 'ios'):
logging.warn("Invalid session platform '{}'".format(platform))
return error_resp(HTTP_NOT_FOUND)
project = 'oxen-io/session-' + platform
with psql.cursor() as cur:
cur.execute("""
SELECT version, updated FROM release_versions
WHERE project = %s AND updated >= NOW() + '24 hours ago'
""", (project,))
row = cur.fetchone()
if row is None:
logging.warn("{} version is more than 24 hours stale!".format(project))
return error_resp(HTTP_BAD_GATEWAY)
return flask.jsonify({
"status_code": 200,
"updated": row[1].timestamp(),
"result": row[0]
})

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#!/usr/bin/env python3
import psycopg
import sys
import os
import os.path
from datetime import datetime
import config
psql = psycopg.connect(**config.pgsql_connect_opts, autocommit=True)
if len(sys.argv) != 2 or sys.argv[1].startswith('-'):
print("Usage: {} /path/to/session-open-group-server".format(sys.argv[0]), file=sys.stderr)
sys.exit(1)
filesdir = sys.argv[1] + '/files/main_files'
if not os.path.isdir(filesdir):
print("Error: {} does not exist or is not a directory".format(filesdir), file=sys.stderr)
sys.exit(2)
cur = psql.cursor()
count = 0
committed_size = 0
skipped = 0
skipped_size = 0
started = datetime.now()
window = [(0, started)]
total_files = sum(1 for _ in os.scandir(filesdir))
for dentry in os.scandir(filesdir):
if not dentry.name.isdigit() or not dentry.is_file():
print("\nWARNING: {} doesn't look like an old file server upload, skipping.".format(
dentry.name),
file=sys.stderr)
continue
stat = dentry.stat()
size = stat.st_size
row = cur.execute("SELECT length(data) FROM files WHERE id = %s", (dentry.name,)).fetchone()
if row:
if size != row[0]:
print(("\nWARNING: Skipping duplicate id {} with mismatched size "
"(expected {} ≠ actual {})").format(dentry.name, size, row[0]))
skipped += 1
skipped_size += size
else:
uploaded = datetime.fromtimestamp(stat.st_mtime)
with open(dentry.path, mode='rb') as f:
data = f.read()
cur.execute(
"""
INSERT INTO files (id, data, uploaded, expiry)
VALUES (%s, %b, %s, %s + %s)
""",
(dentry.name, data, uploaded, uploaded, config.FILE_EXPIRY))
count += 1
committed_size += size
now = datetime.now()
if (now - window[-1][1]).total_seconds() > 0.5:
if len(window) >= 10:
window.pop(0)
mb = committed_size / 1_000_000
window.append((mb, now))
speed = ((window[-1][0] - window[0][0]) / (window[-1][1] - window[0][1]).total_seconds()
if len(window) > 1 else 0)
print(("\rImported {:,} (new: {:,}, skipped: {:,}) / {:,} files containing "
"{:,.1f}MB new ({:,.2f}MB/s), {:,.1f}MB skipped data").format(
count + skipped, count, skipped, total_files,
mb, speed, skipped_size / 1_000_000
), end='', flush=True)
duration = (datetime.now() - started).total_seconds()
print("""
Import finished: imported {:,} files containing {:,d} bytes of data in {:,.2f} seconds ({:,.2f}MB/s)
Skipped {:,} already-existing files containing {:,} bytes
""".format(
count, committed_size, duration, committed_size / 1_000_000 / duration,
skipped, skipped_size))

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BEGIN;
CREATE TABLE files (
id VARCHAR(44) PRIMARY KEY CHECK(id ~ '^[a-zA-Z0-9_-]+$'),
data BYTEA NOT NULL,
uploaded TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
expiry TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW() + '30 days'
);
/* Disable default compression of data because we expect to always be given encrypted (and therefore
* uncompressable) data: */
ALTER TABLE files ALTER COLUMN data SET STORAGE EXTERNAL;
CREATE INDEX files_expiry ON files(expiry);
CREATE TABLE release_versions (
project varchar(50) PRIMARY KEY,
version varchar(25) NOT NULL,
updated TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
);
-- Abritrary version values at the (approx) time this was written; this don't really matter as
-- they'll get updated within a first few seconds of initial startup.
INSERT INTO release_versions (project, version, updated) VALUES ('oxen-io/session-desktop', 'v1.7.3', '2021-10-14Z');
INSERT INTO release_versions (project, version, updated) VALUES ('oxen-io/session-android', '1.11.11', '2021-10-14Z');
INSERT INTO release_versions (project, version, updated) VALUES ('oxen-io/session-ios', '1.11.17', '2021-10-14Z');
COMMIT;
-- vim:ft=sql

34
timer.py Normal file
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import logging
class timer:
"""Wrapper around a uwsgi timer that fails gracefully when we aren't under uwsgi. When such a
failure occurs the timer does not run."""
def __init__(self, secs):
try:
import uwsgi
self.secs = secs
except ModuleNotFoundError:
import sys
logging.error("""
WARNING:
uwsgidecorators not installed or not running under uwsgi.
File cleanup and session version updating will not be enabled!
""")
self.secs = None
def __call__(self, f):
if self.secs is None:
return
import uwsgi
signum = None
for n in range(256):
if not uwsgi.signal_registered(n):
signum = n
break
if signum is None:
raise RuntimeError("Could not find a free uwsgi signal slot")
uwsgi.register_signal(signum, '', f)
uwsgi.add_timer(signum, self.secs)
return f