Add escaping string literal in sql for copy&pasting in dbshell

debug_toolbar/utils/tracking/db.py

@@ -9,18 +9,20 @@
 from django.utils.encoding import force_unicode, smart_str
 from django.utils.hashcompat import sha_constructor
 
-from debug_toolbar.utils import ms_from_timedelta, tidy_stacktrace, get_template_info, \
-                                get_stack
+from debug_toolbar.utils import ms_from_timedelta, tidy_stacktrace, \
+                                get_template_info, get_stack
 from debug_toolbar.utils.compat.db import connections
 # TODO:This should be set in the toolbar loader as a default and panels should
 # get a copy of the toolbar object with access to its config dictionary
 SQL_WARNING_THRESHOLD = getattr(settings, 'DEBUG_TOOLBAR_CONFIG', {}) \
                             .get('SQL_WARNING_THRESHOLD', 500)
 
+
 class SQLQueryTriggered(Exception):
     """Thrown when template panel triggers a query"""
     pass
 
+
 class ThreadLocalState(local):
     def __init__(self):
         self.enabled = True
@@ -34,12 +36,15 @@ def Wrapper(self):
     def recording(self, v):
         self.enabled = v
 
+
 state = ThreadLocalState()
-recording = state.recording # export function
+recording = state.recording  # export function
+
 
 def CursorWrapper(*args, **kwds):  # behave like a class
     return state.Wrapper(*args, **kwds)
 
+
 class ExceptionCursorWrapper(object):
     """
     Wraps a cursor and raises an exception on any operation.
@@ -51,6 +56,7 @@ def __init__(self, cursor, db, logger):
     def __getattr__(self, attr):
         raise SQLQueryTriggered()
 
+
 class NormalCursorWrapper(object):
     """
     Wraps a cursor and logs queries.
@@ -63,6 +69,19 @@ def __init__(self, cursor, db, logger):
         # logger must implement a ``record`` method
         self.logger = logger
 
+    def _quote_expr(self, element):
+        if isinstance(element, basestring):
+            element = element.replace("'", "''")
+            return "'%s'" % element
+        else:
+            return repr(element)
+
+    def _quote_params(self, params):
+        if isinstance(params, dict):
+            return dict((key, self._quote_expr(value))
+                            for key, value in params.iteritems())
+        return map(self._quote_expr, params)
+
     def execute(self, sql, params=()):
         __traceback_hide__ = True
         start = datetime.now()
@@ -71,17 +90,20 @@ def execute(self, sql, params=()):
         finally:
             stop = datetime.now()
             duration = ms_from_timedelta(stop - start)
-            enable_stacktraces = getattr(settings, 'DEBUG_TOOLBAR_CONFIG', {}) \
+            enable_stacktraces = getattr(settings,
+                                        'DEBUG_TOOLBAR_CONFIG', {}) \
                                     .get('ENABLE_STACKTRACES', True)
             if enable_stacktraces:
                 stacktrace = tidy_stacktrace(reversed(get_stack()))
             else:
                 stacktrace = []
             _params = ''
             try:
-                _params = simplejson.dumps([force_unicode(x, strings_only=True) for x in params])
+                _params = simplejson.dumps(
+                        [force_unicode(x, strings_only=True) for x in params]
+                            )
             except TypeError:
-                pass # object not JSON serializable
+                pass  # object not JSON serializable
 
             template_info = None
             cur_frame = sys._getframe().f_back
@@ -108,11 +130,14 @@ def execute(self, sql, params=()):
             params = {
                 'engine': engine,
                 'alias': alias,
-                'sql': self.db.ops.last_executed_query(self.cursor, sql, params),
+                'sql': self.db.ops.last_executed_query(self.cursor, sql,
+                                                self._quote_params(params)),
                 'duration': duration,
                 'raw_sql': sql,
                 'params': _params,
-                'hash': sha_constructor(settings.SECRET_KEY + smart_str(sql) + _params).hexdigest(),
+                'hash': sha_constructor(settings.SECRET_KEY \
+                                        + smart_str(sql) \
+                                        + _params).hexdigest(),
                 'stacktrace': stacktrace,
                 'start_time': start,
                 'stop_time': stop,
@@ -129,7 +154,6 @@ def execute(self, sql, params=()):
                     'encoding': conn.encoding,
                 })
 
-
             # We keep `sql` to maintain backwards compatibility
             self.logger.record(**params)