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-rw-r--r--synapse/config/_base.py14
-rw-r--r--synapse/config/_base.pyi7
-rw-r--r--synapse/config/_util.py35
-rw-r--r--synapse/config/oidc_config.py2
-rw-r--r--synapse/config/password_auth_providers.py5
-rw-r--r--synapse/config/repository.py6
-rw-r--r--synapse/config/room_directory.py2
-rw-r--r--synapse/config/saml2_config.py2
-rw-r--r--synapse/config/spam_checker.py9
-rw-r--r--synapse/config/third_party_event_rules.py4
10 files changed, 59 insertions, 27 deletions
diff --git a/synapse/config/_base.py b/synapse/config/_base.py
index 85f65da4d9..2931a88207 100644
--- a/synapse/config/_base.py
+++ b/synapse/config/_base.py
@@ -23,7 +23,7 @@ import urllib.parse
 from collections import OrderedDict
 from hashlib import sha256
 from textwrap import dedent
-from typing import Any, Callable, List, MutableMapping, Optional
+from typing import Any, Callable, Iterable, List, MutableMapping, Optional
 
 import attr
 import jinja2
@@ -32,7 +32,17 @@ import yaml
 
 
 class ConfigError(Exception):
-    pass
+    """Represents a problem parsing the configuration
+
+    Args:
+        msg:  A textual description of the error.
+        path: Where appropriate, an indication of where in the configuration
+           the problem lies.
+    """
+
+    def __init__(self, msg: str, path: Optional[Iterable[str]] = None):
+        self.msg = msg
+        self.path = path
 
 
 # We split these messages out to allow packages to override with package
diff --git a/synapse/config/_base.pyi b/synapse/config/_base.pyi
index b8faafa9bd..ed26e2fb60 100644
--- a/synapse/config/_base.pyi
+++ b/synapse/config/_base.pyi
@@ -1,4 +1,4 @@
-from typing import Any, List, Optional
+from typing import Any, Iterable, List, Optional
 
 from synapse.config import (
     api,
@@ -35,7 +35,10 @@ from synapse.config import (
     workers,
 )
 
-class ConfigError(Exception): ...
+class ConfigError(Exception):
+    def __init__(self, msg: str, path: Optional[Iterable[str]] = None):
+        self.msg = msg
+        self.path = path
 
 MISSING_REPORT_STATS_CONFIG_INSTRUCTIONS: str
 MISSING_REPORT_STATS_SPIEL: str
diff --git a/synapse/config/_util.py b/synapse/config/_util.py
index c74969a977..1bbe83c317 100644
--- a/synapse/config/_util.py
+++ b/synapse/config/_util.py
@@ -38,14 +38,27 @@ def validate_config(
     try:
         jsonschema.validate(config, json_schema)
     except jsonschema.ValidationError as e:
-        # copy `config_path` before modifying it.
-        path = list(config_path)
-        for p in list(e.path):
-            if isinstance(p, int):
-                path.append("<item %i>" % p)
-            else:
-                path.append(str(p))
-
-        raise ConfigError(
-            "Unable to parse configuration: %s at %s" % (e.message, ".".join(path))
-        )
+        raise json_error_to_config_error(e, config_path)
+
+
+def json_error_to_config_error(
+    e: jsonschema.ValidationError, config_path: Iterable[str]
+) -> ConfigError:
+    """Converts a json validation error to a user-readable ConfigError
+
+    Args:
+        e: the exception to be converted
+        config_path: the path within the config file. This will be used as a basis
+           for the error message.
+
+    Returns:
+        a ConfigError
+    """
+    # copy `config_path` before modifying it.
+    path = list(config_path)
+    for p in list(e.path):
+        if isinstance(p, int):
+            path.append("<item %i>" % p)
+        else:
+            path.append(str(p))
+    return ConfigError(e.message, path)
diff --git a/synapse/config/oidc_config.py b/synapse/config/oidc_config.py
index 69d188341c..1abf8ed405 100644
--- a/synapse/config/oidc_config.py
+++ b/synapse/config/oidc_config.py
@@ -66,7 +66,7 @@ class OIDCConfig(Config):
         (
             self.oidc_user_mapping_provider_class,
             self.oidc_user_mapping_provider_config,
-        ) = load_module(ump_config)
+        ) = load_module(ump_config, ("oidc_config", "user_mapping_provider"))
 
         # Ensure loaded user mapping module has defined all necessary methods
         required_methods = [
diff --git a/synapse/config/password_auth_providers.py b/synapse/config/password_auth_providers.py
index 4fda8ae987..85d07c4f8f 100644
--- a/synapse/config/password_auth_providers.py
+++ b/synapse/config/password_auth_providers.py
@@ -36,7 +36,7 @@ class PasswordAuthProviderConfig(Config):
             providers.append({"module": LDAP_PROVIDER, "config": ldap_config})
 
         providers.extend(config.get("password_providers") or [])
-        for provider in providers:
+        for i, provider in enumerate(providers):
             mod_name = provider["module"]
 
             # This is for backwards compat when the ldap auth provider resided
@@ -45,7 +45,8 @@ class PasswordAuthProviderConfig(Config):
                 mod_name = LDAP_PROVIDER
 
             (provider_class, provider_config) = load_module(
-                {"module": mod_name, "config": provider["config"]}
+                {"module": mod_name, "config": provider["config"]},
+                ("password_providers", "<item %i>" % i),
             )
 
             self.password_providers.append((provider_class, provider_config))
diff --git a/synapse/config/repository.py b/synapse/config/repository.py
index ba1e9d2361..17ce9145ef 100644
--- a/synapse/config/repository.py
+++ b/synapse/config/repository.py
@@ -142,7 +142,7 @@ class ContentRepositoryConfig(Config):
         # them to be started.
         self.media_storage_providers = []  # type: List[tuple]
 
-        for provider_config in storage_providers:
+        for i, provider_config in enumerate(storage_providers):
             # We special case the module "file_system" so as not to need to
             # expose FileStorageProviderBackend
             if provider_config["module"] == "file_system":
@@ -151,7 +151,9 @@ class ContentRepositoryConfig(Config):
                     ".FileStorageProviderBackend"
                 )
 
-            provider_class, parsed_config = load_module(provider_config)
+            provider_class, parsed_config = load_module(
+                provider_config, ("media_storage_providers", "<item %i>" % i)
+            )
 
             wrapper_config = MediaStorageProviderConfig(
                 provider_config.get("store_local", False),
diff --git a/synapse/config/room_directory.py b/synapse/config/room_directory.py
index 92e1b67528..9a3e1c3e7d 100644
--- a/synapse/config/room_directory.py
+++ b/synapse/config/room_directory.py
@@ -180,7 +180,7 @@ class _RoomDirectoryRule:
             self._alias_regex = glob_to_regex(alias)
             self._room_id_regex = glob_to_regex(room_id)
         except Exception as e:
-            raise ConfigError("Failed to parse glob into regex: %s", e)
+            raise ConfigError("Failed to parse glob into regex") from e
 
     def matches(self, user_id, room_id, aliases):
         """Tests if this rule matches the given user_id, room_id and aliases.
diff --git a/synapse/config/saml2_config.py b/synapse/config/saml2_config.py
index c1b8e98ae0..7b97d4f114 100644
--- a/synapse/config/saml2_config.py
+++ b/synapse/config/saml2_config.py
@@ -125,7 +125,7 @@ class SAML2Config(Config):
         (
             self.saml2_user_mapping_provider_class,
             self.saml2_user_mapping_provider_config,
-        ) = load_module(ump_dict)
+        ) = load_module(ump_dict, ("saml2_config", "user_mapping_provider"))
 
         # Ensure loaded user mapping module has defined all necessary methods
         # Note parse_config() is already checked during the call to load_module
diff --git a/synapse/config/spam_checker.py b/synapse/config/spam_checker.py
index 3d067d29db..3d05abc158 100644
--- a/synapse/config/spam_checker.py
+++ b/synapse/config/spam_checker.py
@@ -33,13 +33,14 @@ class SpamCheckerConfig(Config):
             # spam checker, and thus was simply a dictionary with module
             # and config keys. Support this old behaviour by checking
             # to see if the option resolves to a dictionary
-            self.spam_checkers.append(load_module(spam_checkers))
+            self.spam_checkers.append(load_module(spam_checkers, ("spam_checker",)))
         elif isinstance(spam_checkers, list):
-            for spam_checker in spam_checkers:
+            for i, spam_checker in enumerate(spam_checkers):
+                config_path = ("spam_checker", "<item %i>" % i)
                 if not isinstance(spam_checker, dict):
-                    raise ConfigError("spam_checker syntax is incorrect")
+                    raise ConfigError("expected a mapping", config_path)
 
-                self.spam_checkers.append(load_module(spam_checker))
+                self.spam_checkers.append(load_module(spam_checker, config_path))
         else:
             raise ConfigError("spam_checker syntax is incorrect")
 
diff --git a/synapse/config/third_party_event_rules.py b/synapse/config/third_party_event_rules.py
index 10a99c792e..c04e1c4e07 100644
--- a/synapse/config/third_party_event_rules.py
+++ b/synapse/config/third_party_event_rules.py
@@ -26,7 +26,9 @@ class ThirdPartyRulesConfig(Config):
 
         provider = config.get("third_party_event_rules", None)
         if provider is not None:
-            self.third_party_event_rules = load_module(provider)
+            self.third_party_event_rules = load_module(
+                provider, ("third_party_event_rules",)
+            )
 
     def generate_config_section(self, **kwargs):
         return """\
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-04 18:32:34 +0000