[enh] plugins: tor_check: Add more keywords (#4726)

Previously, there was only one usable keyword for the tor_check plugin. Adding more keywords eliminates confusion.

Dockerfile

@@ -48,6 +48,8 @@ RUN apt-get update \
  && apt-get install -y --no-install-recommends \
     # healthcheck
     wget \
+    # lxml (ARMv7)
+    libxslt1.1 \
     # uwsgi
     libpcre3 \
     libxml2 \

docs/src/searx.botdetection.rst

@@ -53,7 +53,7 @@ Probe HTTP headers
 .. automodule:: searx.botdetection.http_user_agent
   :members:
 
-.. automodule:: searx.botdetection.sec_fetch
+.. automodule:: searx.botdetection.http_sec_fetch
   :members:
 
 .. _botdetection config:

searx/botdetection/http_sec_fetch.py

@@ -12,10 +12,10 @@ Metadata`_.  A request is filtered out in case of:
 .. _Fetch Metadata:
    https://developer.mozilla.org/en-US/docs/Glossary/Fetch_metadata_request_header
 
-.. Sec-Fetch-Dest:
+.. _Sec-Fetch-Dest:
    https://developer.mozilla.org/en-US/docs/Web/API/Request/destination
 
-.. Sec-Fetch-Mode:
+.. _Sec-Fetch-Mode:
    https://developer.mozilla.org/en-US/docs/Web/API/Request/mode
 
 
@@ -86,7 +86,7 @@ def filter_request(
     user_agent = request.headers.get('User-Agent', '')
     if is_browser_supported(user_agent):
         val = request.headers.get("Sec-Fetch-Mode", "")
-        if val != "navigate":
+        if val not in ('navigate', 'cors'):
             logger.debug("invalid Sec-Fetch-Mode '%s'", val)
             return flask.redirect(flask.url_for('index'), code=302)
 
@@ -96,7 +96,7 @@ def filter_request(
             flask.redirect(flask.url_for('index'), code=302)
 
         val = request.headers.get("Sec-Fetch-Dest", "")
-        if val != "document":
+        if val not in ('document', 'empty'):
             logger.debug("invalid Sec-Fetch-Dest '%s'", val)
             flask.redirect(flask.url_for('index'), code=302)
 

searx/plugins/tor_check.py

@@ -33,7 +33,7 @@ class SXNGPlugin(Plugin):
     """Rewrite hostnames, remove results or prioritize them."""
 
     id = "tor_check"
-    keywords = ["tor-check"]
+    keywords = ["tor-check", "tor_check", "torcheck", "tor", "tor check"]
 
     def __init__(self, plg_cfg: "PluginCfg") -> None:
         super().__init__(plg_cfg)
@@ -53,7 +53,7 @@ class SXNGPlugin(Plugin):
         if search.search_query.pageno > 1:
             return results
 
-        if search.search_query.query.lower() == "tor-check":
+        if search.search_query.query.lower() in self.keywords:
 
             # Request the list of tor exit nodes.
             try: