hash_plugin.py

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# SPDX-License-Identifier: AGPL-3.0-or-later
# pylint: disable=missing-module-docstring, missing-class-docstring
from __future__ import annotations
import typing
 
import re
import hashlib
 
from flask_babel import gettext
 
from searx.plugins import Plugin, PluginInfo
from searx.result_types import EngineResults
 
if typing.TYPE_CHECKING:
    from searx.search import SearchWithPlugins
    from searx.extended_types import SXNG_Request
    from searx.plugins import PluginCfg
 
 
class SXNGPlugin(Plugin):
    """Plugin converts strings to different hash digests.  The results are
    displayed in area for the "answers".
    """
 
    id = "hash_plugin"
    keywords = ["md5", "sha1", "sha224", "sha256", "sha384", "sha512"]
 
    def __init__(self, plg_cfg: "PluginCfg") -> None:
        super().__init__(plg_cfg)
 
        self.parser_re = re.compile(f"({'|'.join(self.keywords)}) (.*)", re.I)
        self.info = PluginInfo(
            id=self.id,
            name=gettext("Hash plugin"),
            description=gettext("Converts strings to different hash digests."),
            examples=["sha512 The quick brown fox jumps over the lazy dog"],
            preference_section="query",
        )
 
    def post_search(self, request: "SXNG_Request", search: "SearchWithPlugins") -> EngineResults:
        """Returns a result list only for the first page."""
        results = EngineResults()
 
        if search.search_query.pageno > 1:
            return results
 
        m = self.parser_re.match(search.search_query.query)
        if not m:
            # wrong query
            return results
 
        function, string = m.groups()
        if not string.strip():
            # end if the string is empty
            return results
 
        # select hash function
        f = hashlib.new(function.lower())
 
        # make digest from the given string
        f.update(string.encode("utf-8").strip())
        answer = function + " " + gettext("hash digest") + ": " + f.hexdigest()
 
        results.add(results.types.Answer(answer=answer))
 
        return results