Remove support for ftp_proxy

Was limited to HTTP proxy servers and prevents simplifying and fixing
HTTP proxy support.

doc/src/code/index.rst

@@ -51,7 +51,6 @@ according to the URL scheme.
    "1" -> "13" [arrowhead="empty", arrowtail="none"];
    "2" -> "13" [arrowhead="empty", arrowtail="none"];
    "3" -> "6" [arrowhead="empty", arrowtail="none"];
-   "3" -> "10" [arrowhead="empty", arrowtail="none"];
    "4" -> "6" [arrowhead="empty", arrowtail="none"];
    "4" -> "10" [arrowhead="empty", arrowtail="none"];
    "5" -> "12" [arrowhead="empty", arrowtail="none"];

doc/src/man/linkchecker.rst

@@ -325,9 +325,9 @@ and one to all URLs starting with **https://example.org/**:
 PROXY SUPPORT
 -------------
 
-To use a proxy on Unix or Windows set the :envvar:`http_proxy`, :envvar:`https_proxy` or
-:envvar:`ftp_proxy` environment variables to the proxy URL. The URL should be of
-the form
+To use a proxy on Unix or Windows set the :envvar:`http_proxy` or
+:envvar:`https_proxy` environment variables to the proxy URL. The URL should be
+of the form
 **http://**\ [*user*\ **:**\ *pass*\ **@**]\ *host*\ [**:**\ *port*].
 LinkChecker also detects manual proxy settings of Internet Explorer
 under Windows systems, and GNOME or KDE on Linux systems. On a Mac use

doc/upgrading.txt

@@ -5,6 +5,8 @@ Migrating from 10.0 to 10.x
 If installing from source and application translations are needed the Python
 polib package is required to be installed before LinkChecker is installed.
 
+The environment variable ftp_proxy is no longer supported.
+
 Migrating from 9.x to 10.0
 --------------------------
 Python 3.6 or newer is required.

linkcheck/checker/ftpurl.py

@@ -21,11 +21,11 @@ import ftplib
 from io import StringIO
 
 from .. import log, LOG_CHECK, LinkCheckerError, mimeutil
-from . import proxysupport, httpurl, internpaturl, get_index_html
+from . import internpaturl, get_index_html
 from .const import WARN_FTP_MISSING_SLASH
 
 
-class FtpUrl(internpaturl.InternPatternUrl, proxysupport.ProxySupport):
+class FtpUrl(internpaturl.InternPatternUrl):
     """
     Url link with ftp scheme.
     """
@@ -43,25 +43,8 @@ class FtpUrl(internpaturl.InternPatternUrl, proxysupport.ProxySupport):
 
     def check_connection(self):
         """
-        In case of proxy, delegate to HttpUrl. Else check in this
-        order: login, changing directory, list the file.
+        Check in this order: login, changing directory, list the file.
         """
-        # proxy support (we support only http)
-        self.set_proxy(self.aggregate.config["proxy"].get(self.scheme))
-        if self.proxy:
-            # using a (HTTP) proxy
-            http = httpurl.HttpUrl(
-                self.base_url,
-                self.recursion_level,
-                self.aggregate,
-                parent_url=self.parent_url,
-                base_ref=self.base_ref,
-                line=self.line,
-                column=self.column,
-                name=self.name,
-            )
-            http.build_url()
-            return http.check()
         self.login()
         self.negotiate_encoding()
         self.filename = self.cwd()

linkcheck/configuration/__init__.py

@@ -333,10 +333,6 @@ class Configuration(dict):
             http_proxy = get_gnome_proxy() or get_kde_http_proxy()
             if http_proxy:
                 self["proxy"]["http"] = http_proxy
-        if "ftp" not in self["proxy"]:
-            ftp_proxy = get_gnome_proxy(protocol="FTP") or get_kde_ftp_proxy()
-            if ftp_proxy:
-                self["proxy"]["ftp"] = ftp_proxy
 
     def sanitize_plugins(self):
         """Ensure each plugin is configurable."""
@@ -482,15 +478,6 @@ def get_kde_http_proxy():
         log.debug(LOG_CHECK, "error getting HTTP proxy from KDE: %s", msg)
 
 
-def get_kde_ftp_proxy():
-    """Return host:port for KDE HTTP proxy if found, else None."""
-    try:
-        data = read_kioslaverc()
-        return data.get("ftp_proxy")
-    except Exception as msg:
-        log.debug(LOG_CHECK, "error getting FTP proxy from KDE: %s", msg)
-
-
 # The following KDE functions are largely ported and ajusted from
 # Google Chromium:
 # http://src.chromium.org/viewvc/chrome/trunk/src/net/proxy/proxy_config_service_linux.cc?revision=HEAD&view=markup
@@ -610,8 +597,6 @@ def add_kde_setting(key, value, data):
         add_kde_proxy("http_proxy", value, data)
     elif key == "httpsProxy":
         add_kde_proxy("https_proxy", value, data)
-    elif key == "ftpProxy":
-        add_kde_proxy("ftp_proxy", value, data)
     elif key == "ReversedException":
         if value == "true":
             value = True
@@ -650,13 +635,13 @@ def resolve_kde_settings(data):
     if "mode" not in data:
         return
     if data["mode"] == "indirect":
-        for key in ("http_proxy", "https_proxy", "ftp_proxy"):
+        for key in ("http_proxy", "https_proxy"):
             if key in data:
                 resolve_indirect(data, key)
         if "ignore_hosts" in data:
             resolve_indirect(data, "ignore_hosts", splithosts=True)
     elif data["mode"] != "manual":
         # unsupported config
-        for key in ("http_proxy", "https_proxy", "ftp_proxy"):
+        for key in ("http_proxy", "https_proxy"):
             if key in data:
                 del data[key]

linkcheck/director/console.py

@@ -105,7 +105,7 @@ def print_env_info(key, out=stderr):
 
 def print_proxy_info(out=stderr):
     """Print proxy info."""
-    for key in ("http_proxy", "ftp_proxy", "no_proxy"):
+    for key in ("http_proxy", "no_proxy"):
         print_env_info(key, out=out)