sqlmapproject/sqlmap · error · TypeError

oracle must be callable

Error message

oracle must be callable

What it means

Error "oracle must be callable" thrown in sqlmapproject/sqlmap.

Source

Thrown at extra/esperanto/engine.py:36

from .extraction import _Extraction
from .enumeration import _Enumeration


class Esperanto(_OracleCore, _Discovery, _Extraction, _Enumeration):
    """DBMS-agnostic blind extractor. Behaviour lives in four mixins by concern
    (oracle / discovery / extraction / enumeration); this class only holds
    construction + the query counter."""

    def __init__(self, oracle, verbose=False, maxlen=4096, retries=1, quorum=1,
                 maxbytes=None, max_queries=None):
        """oracle: callable(condition_str) -> bool.
        quorum>1 turns on majority voting (2*quorum-1 samples) so a noisy or
        intermittently-erroring oracle can't flip a single probe and corrupt a
        result; retries re-attempts a raised call before it counts as an error.
        maxlen caps text characters; maxbytes separately caps byte/hex recovery
        (default 4*maxlen); max_queries is an optional hard oracle-call ceiling."""
        if not callable(oracle):
            raise TypeError("oracle must be callable")
        self.oracle = oracle
        self.verbose = verbose
        self.maxlen = maxlen
        self.maxbytes = maxlen * 4 if maxbytes is None else maxbytes
        self.retries = retries
        self.quorum = max(1, quorum)
        self.max_queries = max_queries
        self.dialect = Dialect()
        self._queries = 0
        self._errors = 0
        self._hexProbed = False
        self._hexOrdered = None
        self._backslashEscape = None
        self._codeTmpl = None
        self._comparator = "gt"         # ordered-compare op: "gt" / "between" / operator-free rung / "membership"
        self._cmpTemplate = None        # operator-free ordered rung: an "expr > n" template with {expr}/{n}
        self._inOk = True               # IN(...) usable (order-free subset bisection)
        self._lastTruncated = False

View on GitHub (pinned to 0a35b20e39)

When it happens

Trigger: Thrown at extra/esperanto/engine.py:36 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/a6df71365ab5bbae. Report an issue: GitHub.