Implement a Jinja2 filter to extract localparts from email addresses (#12212)
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Add a new Jinja2 template filter to extract the local part of an email address.
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@ -1948,7 +1948,8 @@ saml2_config:
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# localpart_template: Jinja2 template for the localpart of the MXID.
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# If this is not set, the user will be prompted to choose their
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# own username (see the documentation for the
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# 'sso_auth_account_details.html' template).
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# 'sso_auth_account_details.html' template). This template can
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# use the 'localpart_from_email' filter.
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#
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# confirm_localpart: Whether to prompt the user to validate (or
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# change) the generated localpart (see the documentation for the
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@ -36,6 +36,13 @@ Turns a `mxc://` URL for media content into an HTTP(S) one using the homeserver'
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Example: `message.sender_avatar_url|mxc_to_http(32,32)`
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```python
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localpart_from_email(address: str) -> str
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```
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Returns the local part of an email address (e.g. `alice` in `alice@example.com`).
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Example: `user.email_address|localpart_from_email`
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## Email templates
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@ -183,7 +183,8 @@ class OIDCConfig(Config):
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# localpart_template: Jinja2 template for the localpart of the MXID.
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# If this is not set, the user will be prompted to choose their
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# own username (see the documentation for the
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# 'sso_auth_account_details.html' template).
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# 'sso_auth_account_details.html' template). This template can
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# use the 'localpart_from_email' filter.
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#
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# confirm_localpart: Whether to prompt the user to validate (or
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# change) the generated localpart (see the documentation for the
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@ -45,6 +45,7 @@ from synapse.types import JsonDict, UserID, map_username_to_mxid_localpart
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from synapse.util import Clock, json_decoder
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from synapse.util.caches.cached_call import RetryOnExceptionCachedCall
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from synapse.util.macaroons import get_value_from_macaroon, satisfy_expiry
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from synapse.util.templates import _localpart_from_email_filter
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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@ -1308,6 +1309,11 @@ def jinja_finalize(thing: Any) -> Any:
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env = Environment(finalize=jinja_finalize)
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env.filters.update(
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{
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"localpart_from_email": _localpart_from_email_filter,
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}
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)
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@attr.s(slots=True, frozen=True, auto_attribs=True)
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@ -64,6 +64,7 @@ def build_jinja_env(
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{
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"format_ts": _format_ts_filter,
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"mxc_to_http": _create_mxc_to_http_filter(config.server.public_baseurl),
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"localpart_from_email": _localpart_from_email_filter,
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}
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)
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@ -112,3 +113,7 @@ def _create_mxc_to_http_filter(
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def _format_ts_filter(value: int, format: str) -> str:
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return time.strftime(format, time.localtime(value / 1000))
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def _localpart_from_email_filter(address: str) -> str:
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return address.rsplit("@", 1)[0]
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