#!/usr/bin/env python

"""
Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""

import time

from extra.safe2bin.safe2bin import safecharencode
from lib.core.agent import agent
from lib.core.common import Backend, calculateDeltaSeconds, extractExpectedValue, getCurrentThreadData, \
    getUnicode, hashDBRetrieve, hashDBWrite, isListLike
from lib.core.data import conf, kb, logger
from lib.core.dicts import SQL_STATEMENTS
from lib.core.enums import DBMS, EXPECTED
from lib.core.settings import UNICODE_ENCODING
from lib.utils.timeout import timeout

def direct(query, content=True):
    select = True
    query = agent.payloadDirect(query)
    query = agent.adjustLateValues(query)
    threadData = getCurrentThreadData()

    if Backend.isDbms(DBMS.ORACLE) and query.startswith("SELECT ") and " FROM " not in query:
        query = "%s FROM DUAL" % query

    for sqlTitle, sqlStatements in SQL_STATEMENTS.items():
        for sqlStatement in sqlStatements:
            if query.lower().startswith(sqlStatement) and sqlTitle != "SQL SELECT statement":
                select = False
                break

    if select and not query.upper().startswith("SELECT "):
        query = "SELECT %s" % query

    logger.log(9, query)

    output = hashDBRetrieve(query, True, True)
    start = time.time()

    if not select and "EXEC " not in query:
        _ = timeout(func=conf.dbmsConnector.execute, args=(query,), duration=conf.timeout, default=None)
    elif not (output and "sqlmapoutput" not in query and "sqlmapfile" not in query):
        output = timeout(func=conf.dbmsConnector.select, args=(query,), duration=conf.timeout, default=None)
        hashDBWrite(query, output, True)
    elif output:
        infoMsg = "resumed: %s..." % getUnicode(output, UNICODE_ENCODING)[:20]
        logger.info(infoMsg)
    threadData.lastQueryDuration = calculateDeltaSeconds(start)

    if not output:
        return output
    elif content:
        if output and isListLike(output):
            if len(output[0]) == 1:
                output = [_[0] for _ in output]

        retVal = getUnicode(output, noneToNull=True)
        return safecharencode(retVal) if kb.safeCharEncode else retVal
    else:
        return extractExpectedValue(output, EXPECTED.BOOL)