sqlmapproject/sqlmap · error · SqlmapGenericException

error occurred while running preprocess function '%s' ('%s')

Error message

error occurred while running preprocess function '%s' ('%s')

What it means

Error "error occurred while running preprocess function '%s' ('%s')" thrown in sqlmapproject/sqlmap.

Source

Thrown at lib/request/connect.py:682

                    else:
                        post = urldecode(post, convall=True)
                        post = encodeBase64(post, safe=conf.base64Safe)

                if target and cmdLineOptions.method or method and method not in (HTTPMETHOD.GET, HTTPMETHOD.POST):
                    req = MethodRequest(url, post, headers)
                    req.set_method(cmdLineOptions.method or method)
                elif url is not None:
                    req = _urllib.request.Request(url, post, headers)
                else:
                    return None, None, None

                for function in kb.preprocessFunctions:
                    try:
                        function(req)
                    except Exception as ex:
                        errMsg = "error occurred while running preprocess "
                        errMsg += "function '%s' ('%s')" % (function.__name__, getSafeExString(ex))
                        raise SqlmapGenericException(errMsg)
                    else:
                        post, headers = req.data, req.headers

                requestHeaders += "\r\n".join(["%s: %s" % (u"-".join(_.capitalize() for _ in getUnicode(key).split(u'-')) if hasattr(key, "capitalize") else getUnicode(key), getUnicode(value)) for (key, value) in req.header_items()])

                if not getRequestHeader(req, HTTP_HEADER.COOKIE) and conf.cj:
                    conf.cj._policy._now = conf.cj._now = int(time.time())
                    with conf.cj._cookies_lock:
                        cookies = conf.cj._cookies_for_request(req)
                    requestHeaders += "\r\n%s" % ("Cookie: %s" % ";".join("%s=%s" % (getUnicode(cookie.name), getUnicode(cookie.value)) for cookie in cookies))

                if post is not None:
                    if not getRequestHeader(req, HTTP_HEADER.CONTENT_LENGTH) and not chunked:
                        requestHeaders += "\r\n%s: %d" % (string.capwords(HTTP_HEADER.CONTENT_LENGTH), len(post))

                if not getRequestHeader(req, HTTP_HEADER.CONNECTION):
                    requestHeaders += "\r\n%s: %s" % (HTTP_HEADER.CONNECTION, "close" if not conf.keepAlive else "keep-alive")

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at lib/request/connect.py:682 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sqlmapproject/sqlmap@0a35b20e39 (2026-08-26). Data as JSON: /api/errors/bf7ceab50c739aac. Report an issue: GitHub.