feat: Add new ENV VAR for custom error message on error on signup / password change due to password not meeting requirements (open-webui#20650)

* add env var for custom auth pw message

* Update auth.py

* Update auth.py

Author: Classic298

backend/open_webui/env.py

@@ -455,6 +455,8 @@ def parse_section(section):
         r"^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[^\w\s]).{8,}$"
     )
 
+PASSWORD_VALIDATION_HINT = os.environ.get("PASSWORD_VALIDATION_HINT", "")
+
 
 BYPASS_MODEL_ACCESS_CONTROL = (
     os.environ.get("BYPASS_MODEL_ACCESS_CONTROL", "False").lower() == "true"

backend/open_webui/routers/auths.py

@@ -813,6 +813,8 @@ async def signup(
             }
         else:
             raise HTTPException(500, detail=ERROR_MESSAGES.CREATE_USER_ERROR)
+    except HTTPException:
+        raise
     except Exception as err:
         log.error(f"Signup error: {str(err)}")
         raise HTTPException(500, detail="An internal error occurred during signup.")
@@ -954,6 +956,8 @@ async def add_user(
             }
         else:
             raise HTTPException(500, detail=ERROR_MESSAGES.CREATE_USER_ERROR)
+    except HTTPException:
+        raise
     except Exception as err:
         log.error(f"Add user error: {str(err)}")
         raise HTTPException(

backend/open_webui/utils/auth.py

@@ -33,6 +33,7 @@
     ENABLE_PASSWORD_VALIDATION,
     OFFLINE_MODE,
     LICENSE_BLOB,
+    PASSWORD_VALIDATION_HINT,
     PASSWORD_VALIDATION_REGEX_PATTERN,
     REDIS_KEY_PREFIX,
     pk,
@@ -173,7 +174,7 @@ def validate_password(password: str) -> bool:
 
     if ENABLE_PASSWORD_VALIDATION:
         if not PASSWORD_VALIDATION_REGEX_PATTERN.match(password):
-            raise Exception(ERROR_MESSAGES.INVALID_PASSWORD())
+            raise Exception(ERROR_MESSAGES.INVALID_PASSWORD(PASSWORD_VALIDATION_HINT))
 
     return True