minor optimization

_sqlmap.py

@@ -35,6 +35,7 @@ from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.data import paths
+from lib.core.dump import dumper
 from lib.core.common import unhandledExceptionMessage
 from lib.core.exception import exceptionsTuple
 from lib.core.exception import sqlmapSilentQuitException
@@ -44,7 +45,6 @@ from lib.core.profiling import profile
 from lib.core.settings import LEGAL_DISCLAIMER
 from lib.core.testing import smokeTest
 from lib.core.testing import liveTest
-from lib.core.xmldump import closeDumper
 from lib.parse.cmdline import cmdLineParser
 
 def modulePath():
@@ -85,27 +85,23 @@ def main():
     except sqlmapUserQuitException:
         errMsg = "user quit"
         logger.error(errMsg)
-        closeDumper(False, errMsg)
 
     except sqlmapSilentQuitException:
-        closeDumper(False)
+        pass
 
     except exceptionsTuple, e:
         e = getUnicode(e)
         logger.critical(e)
-        closeDumper(False, e)
 
     except KeyboardInterrupt:
         print
         errMsg = "user aborted"
         logger.error(errMsg)
-        closeDumper(False, errMsg)
 
     except EOFError:
         print
         errMsg = "exit"
         logger.error(errMsg)
-        closeDumper(False, errMsg)
 
     except SystemExit:
         pass
@@ -115,10 +111,6 @@ def main():
         errMsg = unhandledExceptionMessage()
         logger.critical(errMsg)
         traceback.print_exc()
-        closeDumper(False, errMsg)
-
-    else:
-        closeDumper(True)
 
     finally:
         dataToStdout("\n[*] shutting down at %s\n\n" % time.strftime("%X"), forceOutput=True)
@@ -126,12 +118,14 @@ def main():
         kb.threadContinue = False
         kb.threadException = True
 
-        if conf.get('hashDB', None):
+        if conf.get("hashDB", None):
             try:
                 conf.hashDB.flush(True)
             except KeyboardInterrupt:
                 pass
 
+        dumper.flush()
+
         # Reference: http://stackoverflow.com/questions/1635080/terminate-a-multi-thread-python-program
         if hasattr(conf, "threads") and conf.threads > 1:
             os._exit(0)

lib/core/dump.py

@@ -8,8 +8,10 @@ See the file 'doc/COPYING' for copying permission
 """
 
 import codecs
+import cStringIO
 import re
 import os
+import threading
 
 from lib.core.common import Backend
 from lib.core.common import dataToDumpFile
@@ -26,6 +28,7 @@ from lib.core.data import logger
 from lib.core.enums import DBMS
 from lib.core.exception import sqlmapValueException
 from lib.core.replication import Replication
+from lib.core.settings import BUFFERED_LOG_SIZE
 from lib.core.settings import TRIM_STDOUT_DUMP_SIZE
 from lib.core.settings import UNICODE_ENCODING
 
@@ -39,23 +42,40 @@ class Dump:
     def __init__(self):
         self.__outputFile = None
         self.__outputFP = None
+        self.__outputBP = None
+        self.__lock = threading.Lock()
 
     def __write(self, data, n=True, console=True):
         text = "%s%s" % (data, "\n" if n else " ")
         if console:
             dataToStdout(text)
 
-        self.__outputFP.write(text)
-        self.__outputFP.flush()
+        if kb.get("multiThreadMode"):
+            self.__lock.acquire()
+
+        self.__outputBP.write(text)
+
+        if self.__outputBP.tell() > BUFFERED_LOG_SIZE:
+            self.flush()
+
+        if kb.get("multiThreadMode"):
+            self.__lock.release()
 
         kb.dataOutputFlag = True
 
+    def flush(self):
+        if self.__outputBP and self.__outputFP and self.__outputBP.tell() > 0:
+            _ = self.__outputBP.getvalue()
+            self.__outputBP.reset()
+            self.__outputFP.write(_)
+
     def __formatString(self, inpStr):
         return restoreDumpMarkedChars(getUnicode(inpStr))
 
     def setOutputFile(self):
         self.__outputFile = "%s%slog" % (conf.outputPath, os.sep)
         self.__outputFP = codecs.open(self.__outputFile, "ab", UNICODE_ENCODING)
+        self.__outputBP = cStringIO.StringIO()
 
     def getOutputFile(self):
         return self.__outputFile

lib/core/settings.py

@@ -432,3 +432,6 @@ SLOW_ORDER_COUNT_THRESHOLD = 10000
 
 # Give up on hash recognition if nothing was found in first given number of rows
 HASH_RECOGNITION_QUIT_THRESHOLD = 10000
+
+# Size of a buffer used for log file output
+BUFFERED_LOG_SIZE = 10000