118 lines
4.4 KiB
118 lines
4.4 KiB
#!/usr/bin/env python
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"""
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Copyright (c) 2006-2024 sqlmap developers (https://sqlmap.org/)
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See the file 'LICENSE' for copying permission
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"""
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# 导入所需的模块
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import re
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import time
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from lib.core.agent import agent
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from lib.core.common import Backend
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from lib.core.common import calculateDeltaSeconds
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from lib.core.common import extractExpectedValue
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from lib.core.common import getCurrentThreadData
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from lib.core.common import hashDBRetrieve
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from lib.core.common import hashDBWrite
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from lib.core.common import isListLike
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from lib.core.convert import getUnicode
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from lib.core.data import conf
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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.dicts import SQL_STATEMENTS
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from lib.core.enums import CUSTOM_LOGGING
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from lib.core.enums import DBMS
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from lib.core.enums import EXPECTED
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from lib.core.enums import TIMEOUT_STATE
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from lib.core.settings import UNICODE_ENCODING
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from lib.utils.safe2bin import safecharencode
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from lib.utils.timeout import timeout
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def direct(query, content=True):
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"""
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直接执行SQL查询的主函数
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参数:
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query: 要执行的SQL查询语句
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content: 是否返回查询内容,默认为True
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"""
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# 标记是否为SELECT查询
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select = True
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# 处理查询语句,添加必要的payload
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query = agent.payloadDirect(query)
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query = agent.adjustLateValues(query)
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# 获取当前线程数据
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threadData = getCurrentThreadData()
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# 针对Oracle数据库的特殊处理:如果是不带FROM的SELECT语句,添加"FROM DUAL"
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if Backend.isDbms(DBMS.ORACLE) and query.upper().startswith("SELECT ") and " FROM " not in query.upper():
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query = "%s FROM DUAL" % query
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# 通过遍历SQL语句字典判断是否为SELECT查询
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for sqlTitle, sqlStatements in SQL_STATEMENTS.items():
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for sqlStatement in sqlStatements:
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if query.lower().startswith(sqlStatement) and sqlTitle != "SQL SELECT statement":
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select = False
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break
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# 如果是SELECT查询,进行相应处理
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if select:
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# 如果查询不以SELECT开头,添加SELECT
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if re.search(r"(?i)\ASELECT ", query) is None:
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query = "SELECT %s" % query
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# 处理二进制字段
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if conf.binaryFields:
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for field in conf.binaryFields:
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field = field.strip()
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if re.search(r"\b%s\b" % re.escape(field), query):
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query = re.sub(r"\b%s\b" % re.escape(field), agent.hexConvertField(field), query)
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# 记录查询语句到日志
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logger.log(CUSTOM_LOGGING.PAYLOAD, query)
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# 尝试从缓存中获取查询结果
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output = hashDBRetrieve(query, True, True)
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start = time.time()
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# 执行查询
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if not select and re.search(r"(?i)\bEXEC ", query) is None:
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# 非SELECT且非EXEC语句的执行
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timeout(func=conf.dbmsConnector.execute, args=(query,), duration=conf.timeout, default=None)
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elif not (output and ("%soutput" % conf.tablePrefix) not in query and ("%sfile" % conf.tablePrefix) not in query):
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# SELECT查询的执行
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output, state = timeout(func=conf.dbmsConnector.select, args=(query,), duration=conf.timeout, default=None)
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if state == TIMEOUT_STATE.NORMAL:
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# 正常执行完成,将结果写入缓存
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hashDBWrite(query, output, True)
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elif state == TIMEOUT_STATE.TIMEOUT:
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# 超时处理:关闭连接并重新连接
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conf.dbmsConnector.close()
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conf.dbmsConnector.connect()
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elif output:
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# 如果有缓存结果,显示提示信息
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infoMsg = "resumed: %s..." % getUnicode(output, UNICODE_ENCODING)[:20]
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logger.info(infoMsg)
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# 记录查询执行时间
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threadData.lastQueryDuration = calculateDeltaSeconds(start)
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# 处理返回结果
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if not output:
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return output
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elif content:
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# 如果需要返回内容
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if output and isListLike(output):
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if len(output[0]) == 1:
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# 如果结果只有一列,简化输出格式
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output = [_[0] for _ in output]
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# 转换为Unicode格式
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retVal = getUnicode(output, noneToNull=True)
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# 根据配置决定是否进行安全字符编码
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return safecharencode(retVal) if kb.safeCharEncode else retVal
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else:
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# 如果不需要返回内容,提取预期的布尔值
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return extractExpectedValue(output, EXPECTED.BOOL)
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