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https://github.com/sqlmapproject/sqlmap.git
synced 2024-11-22 09:36:35 +03:00
minor refactoring, added possibility to compare the remote file and downloaded file (--file-read), prepping for #223
This commit is contained in:
Bernardo Damele
parent
9a1eca20b5
commit
8d9aa2c384
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@ -343,7 +343,7 @@ class Filesystem(GenericFilesystem):
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self._stackedWriteFileVbs(tmpPath, wFileContent, dFile, fileType)
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sameFile = self.askCheckWrittenFile(wFile, dFile, fileType)
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sameFile = self.askCheckWrittenFile(wFile, dFile)
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if sameFile is False:
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message = "do you want to try to upload the file with "
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@ -353,3 +353,4 @@ class Filesystem(GenericFilesystem):
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if not choice or choice.lower() == "y":
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self._stackedWriteFileDebugExe(tmpPath, wFile, wFileContent, dFile, fileType)
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#self._stackedWriteFilePS(tmpPath, wFileContent, dFile, fileType)
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self.askCheckWrittenFile(wFile, dFile)
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@ -100,7 +100,7 @@ class Filesystem(GenericFilesystem):
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sqlQuery = "%s INTO DUMPFILE '%s'" % (fcEncodedStr, dFile)
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unionUse(sqlQuery, unpack=False)
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self.askCheckWrittenFile(wFile, dFile, fileType)
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self.askCheckWrittenFile(wFile, dFile)
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warnMsg = "expect junk characters inside the "
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warnMsg += "file as a leftover from UNION query"
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@ -133,4 +133,4 @@ class Filesystem(GenericFilesystem):
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# Reference: http://dev.mysql.com/doc/refman/5.1/en/select.html
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inject.goStacked("SELECT %s FROM %s INTO DUMPFILE '%s'" % (self.tblField, self.fileTblName, dFile), silent=True)
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self.askCheckWrittenFile(wFile, dFile, fileType)
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self.askCheckWrittenFile(wFile, dFile)
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@ -110,6 +110,6 @@ class Filesystem(GenericFilesystem):
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# (pg_largeobject 'data' field)
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inject.goStacked("SELECT lo_export(%d, '%s')" % (self.oid, dFile), silent=True)
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self.askCheckWrittenFile(wFile, dFile, fileType)
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self.askCheckWrittenFile(wFile, dFile)
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inject.goStacked("SELECT lo_unlink(%d)" % self.oid)
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@ -36,40 +36,44 @@ class Filesystem:
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self.fileTblName = "sqlmapfile"
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self.tblField = "data"
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def _checkWrittenFile(self, wFile, dFile, fileType):
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def _checkFileLength(self, localFile, remoteFile, fileRead=False):
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if Backend.isDbms(DBMS.MYSQL):
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lengthQuery = "SELECT LENGTH(LOAD_FILE('%s'))" % dFile
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lengthQuery = "SELECT LENGTH(LOAD_FILE('%s'))" % remoteFile
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elif Backend.isDbms(DBMS.PGSQL):
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if fileRead:
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lengthQuery = True
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else:
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lengthQuery = "SELECT LENGTH(data) FROM pg_largeobject WHERE loid=%d" % self.oid
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elif Backend.isDbms(DBMS.MSSQL):
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self.createSupportTbl(self.fileTblName, self.tblField, "text")
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# Reference: http://msdn.microsoft.com/en-us/library/ms188365.aspx
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inject.goStacked("BULK INSERT %s FROM '%s' WITH (CODEPAGE='RAW', FIELDTERMINATOR='%s', ROWTERMINATOR='%s')" % (self.fileTblName, dFile, randomStr(10), randomStr(10)))
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inject.goStacked("BULK INSERT %s FROM '%s' WITH (CODEPAGE='RAW', FIELDTERMINATOR='%s', ROWTERMINATOR='%s')" % (self.fileTblName, remoteFile, randomStr(10), randomStr(10)))
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lengthQuery = "SELECT DATALENGTH(%s) FROM %s" % (self.tblField, self.fileTblName)
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wFileSize = os.path.getsize(wFile)
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localFileSize = os.path.getsize(localFile)
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logger.debug("checking if the %s file has been written" % fileType)
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dFileSize = inject.getValue(lengthQuery, resumeValue=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
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logger.debug("checking the length of the remote file %s" % remoteFile)
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remoteFileSize = inject.getValue(lengthQuery, resumeValue=False, expected=EXPECTED.INT, charsetType=CHARSET_TYPE.DIGITS)
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sameFile = None
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if isNumPosStrValue(dFileSize):
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infoMsg = "the file has been successfully written and "
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infoMsg += "its size is %s bytes" % dFileSize
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dFileSize = long(dFileSize)
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if wFileSize == dFileSize:
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sameFile = True
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infoMsg += ", same size as the local file '%s'" % wFile
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else:
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if isNumPosStrValue(remoteFileSize):
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remoteFileSize = long(remoteFileSize)
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sameFile = False
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if localFileSize == remoteFileSize:
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sameFile = True
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infoMsg = "the local file %s and the remote file " % localFile
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infoMsg += "%s have the same size" % remoteFile
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elif remoteFileSize > localFileSize:
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infoMsg = "the remote file %s is larger than " % remoteFile
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infoMsg += "the local file %s" % localFile
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else:
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infoMsg += ", but the size differs from the local "
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infoMsg += "file '%s' (%d bytes)" % (wFile, wFileSize)
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infoMsg += "file '%s' (%d bytes)" % (localFile, localFileSize)
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logger.info(infoMsg)
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else:
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@ -133,38 +137,49 @@ class Filesystem:
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return retVal
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def askCheckWrittenFile(self, wFile, dFile, fileType):
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message = "do you want confirmation that the file '%s' " % dFile
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def askCheckWrittenFile(self, localFile, remoteFile):
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message = "do you want confirmation that the local file '%s' " % localFile
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message += "has been successfully written on the back-end DBMS "
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message += "file system? [Y/n] "
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message += "file system (%s)? [Y/n] " % remoteFile
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output = readInput(message, default="Y")
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if not output or output in ("y", "Y"):
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return self._checkWrittenFile(wFile, dFile, fileType)
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return self._checkFileLength(localFile, remoteFile)
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return True
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def nonStackedReadFile(self, rFile):
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def askCheckReadFile(self, localFile, remoteFile):
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message = "do you want confirmation that the remote file '%s' " % remoteFile
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message += "has been successfully downloaded from the back-end "
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message += "DBMS file system? [Y/n] "
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output = readInput(message, default="Y")
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if not output or output in ("y", "Y"):
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return self._checkFileLength(localFile, remoteFile, True)
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return True
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def nonStackedReadFile(self, remoteFile):
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errMsg = "'nonStackedReadFile' method must be defined "
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errMsg += "into the specific DBMS plugin"
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raise SqlmapUndefinedMethod, errMsg
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def stackedReadFile(self, rFile):
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def stackedReadFile(self, remoteFile):
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errMsg = "'stackedReadFile' method must be defined "
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errMsg += "into the specific DBMS plugin"
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raise SqlmapUndefinedMethod, errMsg
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def unionWriteFile(self, wFile, dFile, fileType):
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def unionWriteFile(self, localFile, remoteFile, fileType):
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errMsg = "'unionWriteFile' method must be defined "
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errMsg += "into the specific DBMS plugin"
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raise SqlmapUndefinedMethod, errMsg
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def stackedWriteFile(self, wFile, dFile, fileType):
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def stackedWriteFile(self, localFile, remoteFile, fileType):
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errMsg = "'stackedWriteFile' method must be defined "
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errMsg += "into the specific DBMS plugin"
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raise SqlmapUndefinedMethod, errMsg
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def readFile(self, rFile):
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def readFile(self, remoteFile):
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fileContent = None
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self.checkDbmsOs()
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@ -177,13 +192,13 @@ class Filesystem:
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debugMsg += "injection technique"
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logger.debug(debugMsg)
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fileContent = self.stackedReadFile(rFile)
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fileContent = self.stackedReadFile(remoteFile)
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elif Backend.isDbms(DBMS.MYSQL):
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debugMsg = "going to read the file with a non-stacked query "
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debugMsg += "SQL injection technique"
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logger.debug(debugMsg)
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fileContent = self.nonStackedReadFile(rFile)
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fileContent = self.nonStackedReadFile(remoteFile)
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else:
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errMsg = "none of the SQL injection techniques detected can "
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errMsg += "be used to read files from the underlying file "
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@ -214,14 +229,16 @@ class Filesystem:
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fileContent = newFileContent
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fileContent = decodeHexValue(fileContent)
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rFilePath = dataToOutFile(fileContent)
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remoteFilePath = dataToOutFile(fileContent)
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if not Backend.isDbms(DBMS.PGSQL):
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self.cleanup(onlyFileTbl=True)
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return rFilePath
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self.askCheckReadFile(remoteFilePath, remoteFile)
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def writeFile(self, wFile, dFile, fileType=None):
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return remoteFilePath
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def writeFile(self, localFile, remoteFile, fileType=None):
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self.checkDbmsOs()
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if conf.direct or isTechniqueAvailable(PAYLOAD.TECHNIQUE.STACKED):
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@ -230,14 +247,14 @@ class Filesystem:
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debugMsg += "stacked query SQL injection technique"
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logger.debug(debugMsg)
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self.stackedWriteFile(wFile, dFile, fileType)
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self.stackedWriteFile(localFile, remoteFile, fileType)
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self.cleanup(onlyFileTbl=True)
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elif isTechniqueAvailable(PAYLOAD.TECHNIQUE.UNION) and Backend.isDbms(DBMS.MYSQL):
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debugMsg = "going to upload the %s file with " % fileType
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debugMsg += "UNION query SQL injection technique"
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logger.debug(debugMsg)
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self.unionWriteFile(wFile, dFile, fileType)
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self.unionWriteFile(localFile, remoteFile, fileType)
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else:
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errMsg = "none of the SQL injection techniques detected can "
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errMsg += "be used to write files to the underlying file "
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