mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-22 12:24:58 -05:00
120 lines
3.9 KiB
Python
120 lines
3.9 KiB
Python
# Copyright 2021 The Matrix.org Foundation C.I.C.
|
|
#
|
|
# 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.
|
|
|
|
"""Utilities for dealing with jinja2 templates"""
|
|
|
|
import time
|
|
import urllib.parse
|
|
from typing import TYPE_CHECKING, Callable, Optional, Sequence, Union
|
|
|
|
import jinja2
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.config.homeserver import HomeServerConfig
|
|
|
|
|
|
def build_jinja_env(
|
|
template_search_directories: Sequence[str],
|
|
config: "HomeServerConfig",
|
|
autoescape: Union[bool, Callable[[Optional[str]], bool], None] = None,
|
|
) -> jinja2.Environment:
|
|
"""Set up a Jinja2 environment to load templates from the given search path
|
|
|
|
The returned environment defines the following filters:
|
|
- format_ts: formats timestamps as strings in the server's local timezone
|
|
(XXX: why is that useful??)
|
|
- mxc_to_http: converts mxc: uris to http URIs. Args are:
|
|
(uri, width, height, resize_method="crop")
|
|
|
|
and the following global variables:
|
|
- server_name: matrix server name
|
|
|
|
Args:
|
|
template_search_directories: directories to search for templates
|
|
|
|
config: homeserver config, for things like `server_name` and `public_baseurl`
|
|
|
|
autoescape: whether template variables should be autoescaped. bool, or
|
|
a function mapping from template name to bool. Defaults to escaping templates
|
|
whose names end in .html, .xml or .htm.
|
|
|
|
Returns:
|
|
jinja environment
|
|
"""
|
|
|
|
if autoescape is None:
|
|
autoescape = jinja2.select_autoescape()
|
|
|
|
loader = jinja2.FileSystemLoader(template_search_directories)
|
|
env = jinja2.Environment(loader=loader, autoescape=autoescape)
|
|
|
|
# Update the environment with our custom filters
|
|
env.filters.update(
|
|
{
|
|
"format_ts": _format_ts_filter,
|
|
"mxc_to_http": _create_mxc_to_http_filter(config.server.public_baseurl),
|
|
"localpart_from_email": _localpart_from_email_filter,
|
|
}
|
|
)
|
|
|
|
# common variables for all templates
|
|
env.globals.update({"server_name": config.server.server_name})
|
|
|
|
return env
|
|
|
|
|
|
def _create_mxc_to_http_filter(
|
|
public_baseurl: Optional[str],
|
|
) -> Callable[[str, int, int, str], str]:
|
|
"""Create and return a jinja2 filter that converts MXC urls to HTTP
|
|
|
|
Args:
|
|
public_baseurl: The public, accessible base URL of the homeserver
|
|
"""
|
|
|
|
def mxc_to_http_filter(
|
|
value: str, width: int, height: int, resize_method: str = "crop"
|
|
) -> str:
|
|
if not public_baseurl:
|
|
raise RuntimeError(
|
|
"public_baseurl must be set in the homeserver config to convert MXC URLs to HTTP URLs."
|
|
)
|
|
|
|
if value[0:6] != "mxc://":
|
|
return ""
|
|
|
|
server_and_media_id = value[6:]
|
|
fragment = None
|
|
if "#" in server_and_media_id:
|
|
server_and_media_id, fragment = server_and_media_id.split("#", 1)
|
|
fragment = "#" + fragment
|
|
|
|
params = {"width": width, "height": height, "method": resize_method}
|
|
return "%s_matrix/media/v1/thumbnail/%s?%s%s" % (
|
|
public_baseurl,
|
|
server_and_media_id,
|
|
urllib.parse.urlencode(params),
|
|
fragment or "",
|
|
)
|
|
|
|
return mxc_to_http_filter
|
|
|
|
|
|
def _format_ts_filter(value: int, format: str) -> str:
|
|
return time.strftime(format, time.localtime(value / 1000))
|
|
|
|
|
|
def _localpart_from_email_filter(address: str) -> str:
|
|
return address.rsplit("@", 1)[0]
|