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-rw-r--r--synapse/config/_base.py42
-rw-r--r--synapse/config/captcha.py4
-rw-r--r--synapse/config/consent_config.py2
-rw-r--r--synapse/config/registration.py4
4 files changed, 29 insertions, 23 deletions
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index 94144efc87..6a0768ce00 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -203,11 +203,28 @@ class Config:
         with open(file_path) as file_stream:
             return file_stream.read()
 
+    def read_template(self, filename: str) -> jinja2.Template:
+        """Load a template file from disk.
+
+        This function will attempt to load the given template from the default Synapse
+        template directory.
+
+        Files read are treated as Jinja templates. The templates is not rendered yet
+        and has autoescape enabled.
+
+        Args:
+            filename: A template filename to read.
+
+        Raises:
+            ConfigError: if the file's path is incorrect or otherwise cannot be read.
+
+        Returns:
+            A jinja2 template.
+        """
+        return self.read_templates([filename])[0]
+
     def read_templates(
-        self,
-        filenames: List[str],
-        custom_template_directory: Optional[str] = None,
-        autoescape: bool = False,
+        self, filenames: List[str], custom_template_directory: Optional[str] = None,
     ) -> List[jinja2.Template]:
         """Load a list of template files from disk using the given variables.
 
@@ -215,7 +232,8 @@ class Config:
         template directory. If `custom_template_directory` is supplied, that directory
         is tried first.
 
-        Files read are treated as Jinja templates. These templates are not rendered yet.
+        Files read are treated as Jinja templates. The templates are not rendered yet
+        and have autoescape enabled.
 
         Args:
             filenames: A list of template filenames to read.
@@ -223,16 +241,12 @@ class Config:
             custom_template_directory: A directory to try to look for the templates
                 before using the default Synapse template directory instead.
 
-            autoescape: Whether to autoescape variables before inserting them into the
-                template.
-
         Raises:
             ConfigError: if the file's path is incorrect or otherwise cannot be read.
 
         Returns:
             A list of jinja2 templates.
         """
-        templates = []
         search_directories = [self.default_template_dir]
 
         # The loader will first look in the custom template directory (if specified) for the
@@ -249,7 +263,7 @@ class Config:
             search_directories.insert(0, custom_template_directory)
 
         loader = jinja2.FileSystemLoader(search_directories)
-        env = jinja2.Environment(loader=loader, autoescape=autoescape)
+        env = jinja2.Environment(loader=loader, autoescape=jinja2.select_autoescape(),)
 
         # Update the environment with our custom filters
         env.filters.update(
@@ -259,12 +273,8 @@ class Config:
             }
         )
 
-        for filename in filenames:
-            # Load the template
-            template = env.get_template(filename)
-            templates.append(template)
-
-        return templates
+        # Load the templates
+        return [env.get_template(filename) for filename in filenames]
 
 
 def _format_ts_filter(value: int, format: str):
diff --git a/synapse/config/captcha.py b/synapse/config/captcha.py
index cb00958165..9e48f865cc 100644
--- a/synapse/config/captcha.py
+++ b/synapse/config/captcha.py
@@ -28,9 +28,7 @@ class CaptchaConfig(Config):
             "recaptcha_siteverify_api",
             "https://www.recaptcha.net/recaptcha/api/siteverify",
         )
-        self.recaptcha_template = self.read_templates(
-            ["recaptcha.html"], autoescape=True
-        )[0]
+        self.recaptcha_template = self.read_template("recaptcha.html")
 
     def generate_config_section(self, **kwargs):
         return """\
diff --git a/synapse/config/consent_config.py b/synapse/config/consent_config.py
index 6efa59b110..c47f364b14 100644
--- a/synapse/config/consent_config.py
+++ b/synapse/config/consent_config.py
@@ -89,7 +89,7 @@ class ConsentConfig(Config):
 
     def read_config(self, config, **kwargs):
         consent_config = config.get("user_consent")
-        self.terms_template = self.read_templates(["terms.html"], autoescape=True)[0]
+        self.terms_template = self.read_template("terms.html")
 
         if consent_config is None:
             return
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index 4bfc69cb7a..ac48913a0b 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -176,9 +176,7 @@ class RegistrationConfig(Config):
         self.session_lifetime = session_lifetime
 
         # The success template used during fallback auth.
-        self.fallback_success_template = self.read_templates(
-            ["auth_success.html"], autoescape=True
-        )[0]
+        self.fallback_success_template = self.read_template("auth_success.html")
 
     def generate_config_section(self, generate_secrets=False, **kwargs):
         if generate_secrets: