[fix]Fixed five known issues, including token authentication and multi-worker operation. (#63)

* 0.6.1Version

* fix 0.5.1 schema async bug

* fix security bug

* fix security bug

* Add complete Token, JWT, OAuth authentication system

* Add complete Token, JWT, OAuth authentication system

* Add complete Token, JWT, OAuth authentication system

* Add complete Token, JWT, OAuth authentication system

* Add a controllable MCP Server DB Pool permission authentication system, connect it with the Doris permission system, and provide it to enterprise-level applications concurrently with the multi-Worker mode.

* Add Tokens Management

* change version

* fix stdio start bug

* fix stdio start bug

* fix stdio start bug

doris_mcp_server/main.py

@@ -642,6 +642,16 @@ class DorisServer:
                                 # Store auth context in scope for potential use by tools/resources
                                 scope["auth_context"] = auth_context
 
+                                # FIX for Issue #62 Bug 1: Set auth_context in context variable
+                                # This allows tools to access token information for token-bound database configuration
+                                try:
+                                    from contextvars import ContextVar
+                                    auth_context_var: ContextVar = ContextVar('mcp_auth_context', default=None)
+                                    auth_context_var.set(auth_context)
+                                    self.logger.debug(f"Set auth_context in context variable with token: {bool(hasattr(auth_context, 'token') and auth_context.token)}")
+                                except Exception as ctx_error:
+                                    self.logger.warning(f"Failed to set auth_context in context variable: {ctx_error}")
+
                             except Exception as auth_error:
                                 self.logger.error(f"MCP authentication failed: {auth_error}")
                                 # Return 401 Unauthorized

doris_mcp_server/utils/db.py

@@ -95,12 +95,14 @@ class DorisConnection:
                 await cursor.execute(sql, params)
 
                 # Check if it's a query statement (statement that returns result set)
+                # FIX for Issue #62 Bug 5: Added WITH support for Common Table Expressions (CTE)
                 sql_upper = sql.strip().upper()
                 if (sql_upper.startswith("SELECT") or
                     sql_upper.startswith("SHOW") or
                     sql_upper.startswith("DESCRIBE") or
                     sql_upper.startswith("DESC") or
-                    sql_upper.startswith("EXPLAIN")):
+                    sql_upper.startswith("EXPLAIN") or
+                    sql_upper.startswith("WITH")):  # FIX: Support CTE queries
                     data = await cursor.fetchall()
                     row_count = len(data)
                 else:
@@ -250,7 +252,16 @@ class DorisConnectionManager:
         self.logger = get_logger(__name__)
         self.security_manager = security_manager
         self.token_manager = token_manager  # Token manager for token-bound DB config
-        self.session_cache = DorisSessionCache(self)
+
+        # FIX for Issue #58 Problem 1: Disable session caching to prevent connection sharing
+        # Session caching causes multiple threads to share the same MySQL connection,
+        # leading to race conditions and deadlocks in multi-threaded environments
+        # By disabling caching, each request gets a fresh connection from the pool
+        self.session_cache = DorisSessionCache(
+            self,
+            cache_system_session=False,  # Disabled to prevent multi-thread issues
+            cache_user_session=False     # Disabled to prevent multi-thread issues
+        )
         
         # Store original database config for fallback
         self.original_db_config = {
@@ -1258,10 +1269,36 @@ class DorisConnectionManager:
     async def execute_query(
         self, session_id: str, sql: str, params: tuple | None = None, auth_context=None
     ) -> QueryResult:
-        """Execute query - Simplified Strategy with automatic connection management"""
+        """Execute query - Simplified Strategy with automatic connection management
+
+        FIX for Issue #62 Bug 1: Configure token-bound database before query execution
+        """
         connection = None
         try:
-            # Always get fresh connection from pool
+            # FIX: Configure database for token BEFORE getting connection
+            # This ensures token-bound database configuration is used instead of global config
+            if auth_context and hasattr(auth_context, 'token') and auth_context.token:
+                try:
+                    success, config_source = await self.configure_for_token(auth_context.token)
+                    if success:
+                        self.logger.info(f"Session {session_id}: Using {config_source} database configuration")
+                    else:
+                        self.logger.warning(f"Session {session_id}: Token configuration failed, may use global config")
+                except Exception as token_config_error:
+                    # SECURITY: If token should have config but configuration fails, don't fallback
+                    # This prevents privilege escalation (using high-privilege default user)
+                    if self.token_manager:
+                        self.logger.error(f"Session {session_id}: Token database configuration failed: {token_config_error}")
+                        raise RuntimeError(
+                            f"Failed to configure database for authenticated token. "
+                            f"This is a security measure to prevent using default high-privilege credentials. "
+                            f"Error: {token_config_error}"
+                        )
+                    else:
+                        # No token manager, can use global config
+                        self.logger.warning(f"Session {session_id}: No token manager, using global config")
+
+            # Always get fresh connection from pool (with configured database)
             connection = await self.get_connection(session_id)
 
             # Execute query

doris_mcp_server/utils/query_executor.py

@@ -546,9 +546,13 @@ class DorisQueryExecutor:
         limit: int = 1000,
         timeout: int = 30,
         session_id: str = "mcp_session",
-        user_id: str = "mcp_user"
+        user_id: str = "mcp_user",
+        auth_context = None  # FIX for Issue #62 Bug 1: Accept auth_context with token
     ) -> Dict[str, Any]:
-        """Execute SQL query for MCP interface - unified method"""
+        """Execute SQL query for MCP interface - unified method
+
+        FIX for Issue #62 Bug 1: Now accepts auth_context parameter to support token-bound database configuration
+        """
         max_retries = 2
         retry_count = 0
 
@@ -564,14 +568,20 @@ class DorisQueryExecutor:
                 # Import required security modules
                 from .security import DorisSecurityManager, AuthContext, SecurityLevel
 
-                # Create proper auth context with read-only permissions
+                # FIX: Use provided auth_context if available (contains token for DB config)
+                # Otherwise create default auth context for backward compatibility
+                if auth_context is None:
                     auth_context = AuthContext(
                         user_id=user_id,
                         roles=["read_only_user"],  # Restrictive role for MCP interface
                         permissions=["read_data"],  # Only read permissions
                         session_id=session_id,
-                    security_level=SecurityLevel.INTERNAL
+                        security_level=SecurityLevel.INTERNAL,
+                        token=""  # No token in default context
                     )
+                else:
+                    # Use provided auth_context (may contain token for database configuration)
+                    self.logger.debug(f"Using provided auth_context with token: {bool(hasattr(auth_context, 'token') and auth_context.token)}")
 
                 # Perform SQL security validation if enabled
                 if hasattr(self.connection_manager, 'config') and hasattr(self.connection_manager.config, 'security'):
@@ -880,17 +890,20 @@ async def execute_sql_query(sql: str, connection_manager: DorisConnectionManager
 
     This function now includes security validation to ensure safe query execution.
     All queries are validated against the configured security policies before execution.
+
+    FIX for Issue #62 Bug 1: Now supports auth_context parameter for token-bound database configuration
+    FIX for Issue #58 Problem 2: Removed executor.close() to prevent ClosedResourceError in multi-worker mode
     """
     try:
         # Create query executor with the connection manager's configuration
         executor = DorisQueryExecutor(connection_manager)
 
-        try:
         # Extract parameters from kwargs or use defaults
         limit = kwargs.get("limit", 1000)
         timeout = kwargs.get("timeout", 30)
         session_id = kwargs.get("session_id", "mcp_session")
         user_id = kwargs.get("user_id", "mcp_user")
+        auth_context = kwargs.get("auth_context", None)  # FIX: Extract auth_context
 
         # The execute_sql_for_mcp method now includes security validation
         result = await executor.execute_sql_for_mcp(
@@ -898,11 +911,17 @@ async def execute_sql_query(sql: str, connection_manager: DorisConnectionManager
             limit=limit,
             timeout=timeout,
             session_id=session_id,
-                user_id=user_id
+            user_id=user_id,
+            auth_context=auth_context  # FIX: Pass auth_context with token
         )
+
+        # FIX for Issue #58 Problem 2: Do NOT close executor here
+        # In multi-worker mode, closing here causes ClosedResourceError
+        # The executor's resources (cache, background tasks) will be managed
+        # by the connection_manager lifecycle and Python's garbage collection
+        # This prevents premature cleanup while MCP session manager is still processing
+
         return result
-        finally:
-            await executor.close()
 
     except Exception as e:
         return {

doris_mcp_server/utils/schema_extractor.py

@@ -1464,6 +1464,9 @@ class MetadataExtractor:
         """
         Execute SQL query and return results, supports catalog federation queries
         Unified interface for MCP tools
+
+        FIX for Issue #62 Bug 1: Now retrieves auth_context from context variable to support token-bound database configuration
+        FIX for Issue #62 Bug 3: Now uses db_name and catalog_name parameters to switch database context
         """
         logger.info(f"Executing SQL query: {sql}, DB: {db_name}, Catalog: {catalog_name}, MaxRows: {max_rows}, Timeout: {timeout}")
 
@@ -1471,15 +1474,63 @@ class MetadataExtractor:
             if not sql:
                 return self._format_response(success=False, error="No SQL statement provided", message="Please provide SQL statement to execute")
 
+            # FIX for Issue #62 Bug 3: Build context switching SQL if db_name or catalog_name is specified
+            final_sql = sql
+            if catalog_name or db_name:
+                context_statements = []
+
+                if catalog_name:
+                    # Switch to specified catalog
+                    context_statements.append(f"USE CATALOG `{catalog_name}`")
+                    logger.debug(f"Switching to catalog: {catalog_name}")
+
+                if db_name:
+                    # Switch to specified database
+                    if catalog_name:
+                        context_statements.append(f"USE `{catalog_name}`.`{db_name}`")
+                    else:
+                        context_statements.append(f"USE `{db_name}`")
+                    logger.debug(f"Switching to database: {db_name}")
+
+                # Combine context switching with original SQL
+                if context_statements:
+                    # Remove trailing semicolon from context statements if present
+                    context_sql = "; ".join(context_statements)
+                    # Ensure original SQL doesn't start with semicolon
+                    sql_clean = sql.lstrip(";").strip()
+                    final_sql = f"{context_sql}; {sql_clean}"
+                    logger.debug(f"Modified SQL with context switching: {final_sql[:200]}...")
+
+            # FIX: Try to get auth_context from context variable (set by HTTP middleware)
+            # This allows token-bound database configuration to work
+            auth_context = None
+            try:
+                from contextvars import ContextVar
+                from .security import AuthContext
+
+                # Try to get auth_context from context variable
+                # This will be set by the HTTP request handler in main.py
+                auth_context_var: ContextVar = ContextVar('mcp_auth_context', default=None)
+                auth_context = auth_context_var.get()
+
+                if auth_context:
+                    logger.debug(f"Retrieved auth_context from context variable with token: {bool(hasattr(auth_context, 'token') and auth_context.token)}")
+                else:
+                    logger.debug("No auth_context found in context variable, using default")
+            except Exception as ctx_error:
+                logger.debug(f"Could not retrieve auth_context from context variable: {ctx_error}")
+                auth_context = None
+
             # Import query executor
             from .query_executor import execute_sql_query
 
-            # Call execute_sql_query to execute query
+            # Call execute_sql_query to execute query with auth_context
             exec_result = await execute_sql_query(
-                sql=sql,
+                sql=final_sql,  # Use modified SQL with context switching
                 connection_manager=self.connection_manager,
                 limit=max_rows,
-                timeout=timeout
+                timeout=timeout,
+                auth_context=auth_context  # FIX: Pass auth_context with token
             )
 
             return exec_result

doris_mcp_server/utils/security.py

@@ -939,28 +939,69 @@ class SQLSecurityValidator:
     async def _check_sql_injection(
         self, sql: str, parsed: Statement
     ) -> ValidationResult:
-        """Check SQL injection risks"""
+        """Check SQL injection risks with improved pattern detection
-        # Check common SQL injection patterns
+
+        FIX for Issue #62 Bug 2: Improved patterns to reduce false positives
+        Now better distinguishes between legitimate SQL (like BETWEEN...AND) and injection attempts
+        """
+        # Improved injection patterns that are more specific and less prone to false positives
         injection_patterns = [
-            r"(?i)(?<![A-Za-z0-9_])(union|select|insert|update|delete|drop|create|alter)(?![A-Za-z0-9_])\s+[\s\S]*?\s+(?<![A-Za-z0-9_])(union|select|insert|update|delete|drop|create|alter)(?![A-Za-z0-9_])",
+            # Stacked queries with dangerous operations (true injection risk)
-            r"(\s|^)(or|and)\s+\d+\s*=\s*\d+",
+            r";\s*(DROP|DELETE|TRUNCATE|ALTER|CREATE|INSERT|UPDATE)\s+",
-            r"(\s|^)(or|and)\s+['\"].*['\"]",
+
-            r";\s*(drop|delete|truncate|alter|create)",
+            # UNION-based injection (but allow legitimate UNION queries)
-            r"(exec|execute|sp_|xp_)",
+            # Only flag if UNION is followed by suspicious patterns like SELECT with WHERE 1=1
-            r"(script|javascript|vbscript)",
+            r"UNION\s+(ALL\s+)?SELECT\s+.*\s+(WHERE|AND|OR)\s+\d+\s*=\s*\d+",
-            r"(char|ascii|substring|concat)\s*\(",
+
+            # Boolean-based blind injection with comments (true injection pattern)
+            r"(WHERE|AND|OR)\s+\d+\s*=\s*\d+\s*(--|#|/\*)",
+
+            # Quote-based injection attempts (but not in legitimate strings)
+            r"(WHERE|AND|OR)\s+(['\"])[^\2]*\2\s*=\s*\2[^\2]*\2",
+
+            # Time-based blind injection
+            r"(SLEEP|WAITFOR|BENCHMARK)\s*\(",
+
+            # System stored procedure injection
+            r"(EXEC|EXECUTE|SP_|XP_)\s*\(",
+
+            # Script injection attempts
+            r"<\s*(SCRIPT|JAVASCRIPT|VBSCRIPT)",
         ]
 
-        sql_lower = sql.lower()
+        # FIX: Don't flag legitimate SQL functions and keywords
+        # These patterns are too broad and cause false positives:
+        # - REMOVED: r"(char|ascii|substring|concat)\s*\(" - These are legitimate SQL functions
+        # - REMOVED: r"(\s|^)(or|and)\s+\d+\s*=\s*\d+" - This flags BETWEEN...AND constructs
+        # - REMOVED: r"(\s|^)(or|and)\s+['\"].*['\"]" - This is too broad
+
+        sql_upper = sql.upper()
+
+        # Special case: Allow BETWEEN...AND which is legitimate SQL
+        # This prevents false positives like "WHERE dt BETWEEN '2025-01-01' AND '2025-01-31'"
+        if "BETWEEN" in sql_upper and "AND" in sql_upper:
+            # This is likely a BETWEEN clause, not injection
+            # Check if AND appears in a BETWEEN context
+            between_pattern = r"BETWEEN\s+[^\s]+\s+AND\s+[^\s]+"
+            if re.search(between_pattern, sql_upper, re.IGNORECASE):
+                # Remove BETWEEN clauses before checking other patterns
+                sql_cleaned = re.sub(between_pattern, "BETWEEN_CLAUSE", sql_upper, flags=re.IGNORECASE)
+                sql_to_check = sql_cleaned
+            else:
+                sql_to_check = sql_upper
+        else:
+            sql_to_check = sql_upper
+
         for pattern in injection_patterns:
-            if re.search(pattern, sql_lower, re.IGNORECASE):
+            if re.search(pattern, sql_to_check, re.IGNORECASE):
+                self.logger.warning(f"Potential SQL injection pattern detected: {pattern}")
                 return ValidationResult(
                     is_valid=False,
                     error_message="Potential SQL injection risk detected",
                     risk_level="high",
                 )
 
-        # Check suspicious quotes and comments
+        # Check suspicious quotes and comments (with improved detection)
         if self._has_suspicious_quotes_or_comments(sql):
             return ValidationResult(
                 is_valid=False,
@@ -971,20 +1012,68 @@ class SQLSecurityValidator:
         return ValidationResult(is_valid=True)
 
     def _has_suspicious_quotes_or_comments(self, sql: str) -> bool:
-        """Check suspicious quote and comment patterns"""
+        """Check suspicious quote and comment patterns with improved detection
-        # Check unmatched quotes
-        single_quotes = sql.count("'")
-        double_quotes = sql.count('"')
 
+        FIX for Issue #62 Bug 2: Improved detection to reduce false positives
+        Now distinguishes between legitimate comments/strings and injection attempts
+        """
+        try:
+            # Use sqlparse to parse the SQL and distinguish between code and comments/strings
+            import sqlparse
+            from sqlparse.tokens import Comment, String
+
+            # Parse the SQL
+            parsed = sqlparse.parse(sql)
+            if not parsed:
+                # If parsing fails, be conservative
+                return True
+
+            statement = parsed[0]
+
+            # Check for unmatched quotes ONLY in non-string tokens
+            # This prevents false positives from legitimate string content
+            non_string_content = []
+            has_string_tokens = False
+
+            for token in statement.flatten():
+                if token.ttype in (String.Single, String.Double):
+                    has_string_tokens = True
+                    # Skip string content - quotes inside strings are legitimate
+                    continue
+                elif token.ttype in (Comment.Single, Comment.Multi):
+                    # Comments are generally OK, but check for suspicious injection patterns
+                    comment_value = str(token).lower()
+                    # Check if comment contains dangerous SQL keywords
+                    dangerous_in_comments = ['drop', 'delete', 'insert', 'update', 'union', 'exec', 'execute']
+                    if any(keyword in comment_value for keyword in dangerous_in_comments):
+                        self.logger.warning(f"Suspicious SQL keyword in comment: {token}")
+                        return True
+                    # Normal comments are OK
+                    continue
+                else:
+                    # Accumulate non-string, non-comment content
+                    non_string_content.append(str(token))
+
+            # Check for unmatched quotes in non-string content
+            non_string_text = ''.join(non_string_content)
+            single_quotes = non_string_text.count("'")
+            double_quotes = non_string_text.count('"')
+
+            # Only flag if there are unmatched quotes in actual SQL code (not in strings)
             if single_quotes % 2 != 0 or double_quotes % 2 != 0:
                 return True
 
-        # Check SQL comments
+            # FIX: Don't flag legitimate SQL comments
-        if "--" in sql or "/*" in sql:
+            # Comments are OK as long as they don't contain dangerous patterns (already checked above)
-            return True
 
             return False
 
+        except Exception as e:
+            self.logger.debug(f"SQL parsing error in quote/comment check: {e}")
+            # On parsing error, fall back to conservative check
+            # But be more lenient than before
+            return False  # Don't flag on parse errors to reduce false positives
+
     async def _check_blocked_keywords(self, parsed: Statement) -> ValidationResult:
         """Check blocked keywords"""
         blocked_operations = []

start_server.sh

@@ -64,9 +64,10 @@ else
 fi
 
 # Set HTTP-specific environment variables
+# FIX for Issue #62 Bug 4: Use SERVER_PORT instead of MCP_PORT for consistency with code
 export MCP_TRANSPORT_TYPE="http"
 export MCP_HOST="${MCP_HOST:-0.0.0.0}"
-export MCP_PORT="${MCP_PORT:-3000}"
+export SERVER_PORT="${SERVER_PORT:-3000}"  # Changed from MCP_PORT to SERVER_PORT
 export WORKERS="${WORKERS:-1}"
 export ALLOWED_ORIGINS="${ALLOWED_ORIGINS:-*}"
 export LOG_LEVEL="${LOG_LEVEL:-info}"
@@ -77,15 +78,15 @@ export MCP_DEBUG_ADAPTER="true"
 export PYTHONPATH="$(pwd):$PYTHONPATH"
 
 echo -e "${GREEN}Starting MCP server (Streamable HTTP mode)...${NC}"
-echo -e "${YELLOW}Service will run on http://${MCP_HOST}:${MCP_PORT}/mcp${NC}"
+echo -e "${YELLOW}Service will run on http://${MCP_HOST}:${SERVER_PORT}/mcp${NC}"
-echo -e "${YELLOW}Health Check: http://${MCP_HOST}:${MCP_PORT}/health${NC}"
+echo -e "${YELLOW}Health Check: http://${MCP_HOST}:${SERVER_PORT}/health${NC}"
-echo -e "${YELLOW}MCP Endpoint: http://${MCP_HOST}:${MCP_PORT}/mcp${NC}"
+echo -e "${YELLOW}MCP Endpoint: http://${MCP_HOST}:${SERVER_PORT}/mcp${NC}"
-echo -e "${YELLOW}Local access: http://localhost:${MCP_PORT}/mcp${NC}"
+echo -e "${YELLOW}Local access: http://localhost:${SERVER_PORT}/mcp${NC}"
 echo -e "${YELLOW}Workers: ${WORKERS}${NC}"
 echo -e "${YELLOW}Use Ctrl+C to stop the service${NC}"
 
 # Start the server in HTTP mode (Streamable HTTP)
-python -m doris_mcp_server.main --transport http --host ${MCP_HOST} --port ${MCP_PORT} --workers ${WORKERS}
+python -m doris_mcp_server.main --transport http --host ${MCP_HOST} --port ${SERVER_PORT} --workers ${WORKERS}
 
 # Check exit status
 if [ $? -ne 0 ]; then
@@ -97,4 +98,4 @@ fi
 echo -e "${YELLOW}Tip: If the page displays abnormally, please clear your browser cache or use incognito mode${NC}"
 echo -e "${YELLOW}Chrome browser clear cache shortcut: Ctrl+Shift+Del (Windows) or Cmd+Shift+Del (Mac)${NC}"
 echo -e "${CYAN}For testing HTTP endpoints, you can use:${NC}"
-echo -e "${CYAN}  curl -X POST http://localhost:${MCP_PORT}/mcp -H 'Content-Type: application/json' -d '{\"method\":\"tools/list\"}'${NC}" 
+echo -e "${CYAN}  curl -X POST http://localhost:${SERVER_PORT}/mcp -H 'Content-Type: application/json' -d '{\"method\":\"tools/list\"}'${NC}"