Firefox doesn't follow system proxy settings

Hi. I’ve just installed Fedora 38.
Firefox doesn’t follow the proxy rules I’ve set in Gnome control center.

When I set HTTP and HTTPS proxy settings and run the Firefox through terminal, It follows the settings but when Only Socks5 proxy is set, it doesn’t use proxy even after running it in terminal.

Great :slight_smile:

I’ve kinda fixed it. This is how:

This is /usr/bin/firefox file which runs the firefox when we click on firefox icon:

#!/usr/bin/bash
#
# The contents of this file are subject to the Netscape Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/NPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is mozilla.org code.
#
# The Initial Developer of the Original Code is Netscape
# Communications Corporation.  Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s):
#

##
## Usage:
##
## $ firefox
##
## This script is meant to run a mozilla program from the mozilla
## rpm installation.
##
## The script will setup all the environment voodoo needed to make
## mozilla work.

cmdname=`basename $0`

##
## Variables
##
MOZ_ARCH=$(uname -m)
case $MOZ_ARCH in
	x86_64 | s390x | sparc64)
		MOZ_LIB_DIR="/usr/lib64"
		SECONDARY_LIB_DIR="/usr/lib"
		;;
	* )
		MOZ_LIB_DIR="/usr/lib"
		SECONDARY_LIB_DIR="/usr/lib64"
		;;
esac

MOZ_FIREFOX_FILE="firefox"

if [ ! -r $MOZ_LIB_DIR/firefox/$MOZ_FIREFOX_FILE ]; then
    if [ ! -r $SECONDARY_LIB_DIR/firefox/$MOZ_FIREFOX_FILE ]; then
	echo "Error: $MOZ_LIB_DIR/firefox/$MOZ_FIREFOX_FILE not found"
	if [ -d $SECONDARY_LIB_DIR ]; then
	    echo "       $SECONDARY_LIB_DIR/firefox/$MOZ_FIREFOX_FILE not found"
	fi
	exit 1
    fi
    MOZ_LIB_DIR="$SECONDARY_LIB_DIR"
fi
MOZ_DIST_BIN="$MOZ_LIB_DIR/firefox"
MOZ_LANGPACKS_DIR="$MOZ_DIST_BIN/langpacks"
MOZ_EXTENSIONS_PROFILE_DIR="$HOME/.mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}"
MOZ_PROGRAM="$MOZ_DIST_BIN/$MOZ_FIREFOX_FILE"
MOZ_LAUNCHER="$MOZ_DIST_BIN/run-mozilla.sh"
GETENFORCE_FILE="/usr/sbin/getenforce"

##
## Enable Wayland backend?
##
if ! [ $MOZ_DISABLE_WAYLAND ] && [ "$WAYLAND_DISPLAY" ]; then
  if [ "$XDG_CURRENT_DESKTOP" == "GNOME" ]; then
    export MOZ_ENABLE_WAYLAND=1
  fi
##  Enable Wayland on KDE/Sway
##
  if [ "$XDG_SESSION_TYPE" == "wayland" ]; then
    export MOZ_ENABLE_WAYLAND=1
  fi
fi

##
## Use D-Bus remote exclusively when there's Wayland display.
##
if [ "$WAYLAND_DISPLAY" ]; then
  export MOZ_DBUS_REMOTE=1
fi

##
## Set MOZ_GRE_CONF
##
MOZ_GRE_CONF=/etc/gre.d/gre.conf
if [ "$MOZ_LIB_DIR" == "/usr/lib64" ]; then
  MOZ_GRE_CONF=/etc/gre.d/gre64.conf
fi
export MOZ_GRE_CONF

##
## Set MOZILLA_FIVE_HOME
##
MOZILLA_FIVE_HOME="$MOZ_DIST_BIN"

export MOZILLA_FIVE_HOME

##
## Make sure that we set the plugin path
##
MOZ_PLUGIN_DIR="plugins"

if [ "$MOZ_PLUGIN_PATH" ]
then
  MOZ_PLUGIN_PATH=$MOZ_PLUGIN_PATH:$MOZ_LIB_DIR/mozilla/$MOZ_PLUGIN_DIR:$MOZ_DIST_BIN/$MOZ_PLUGIN_DIR
else
  MOZ_PLUGIN_PATH=$MOZ_LIB_DIR/mozilla/$MOZ_PLUGIN_DIR:$MOZ_DIST_BIN/$MOZ_PLUGIN_DIR
fi
export MOZ_PLUGIN_PATH

##
## Set MOZ_APP_LAUNCHER for gnome-session
##
export MOZ_APP_LAUNCHER="/usr/bin/firefox"

##
## Set FONTCONFIG_PATH for Xft/fontconfig
##
FONTCONFIG_PATH="/etc/fonts:${MOZILLA_FIVE_HOME}/res/Xft"
export FONTCONFIG_PATH

##
## We want Firefox to use Openh264 provided by Fedora
##
export MOZ_GMP_PATH=$MOZ_LIB_DIR/mozilla/plugins/gmp-gmpopenh264/system-installed

##
## In order to better support certain scripts (such as Indic and some CJK
## scripts), Fedora builds its Firefox, with permission from the Mozilla
## Corporation, with the Pango system as its text renderer.  This change
## may negatively impact performance on some pages.  To disable the use of
## Pango, set MOZ_DISABLE_PANGO=1 in your environment before launching
## Firefox.
##
#
# MOZ_DISABLE_PANGO=1
# export MOZ_DISABLE_PANGO
#

##
## Disable the GNOME crash dialog, Moz has it's own
##
GNOME_DISABLE_CRASH_DIALOG=1
export GNOME_DISABLE_CRASH_DIALOG

##
## Disable the SLICE allocator (rhbz#1014858)
##
export G_SLICE=always-malloc

##
## Enable Xinput2 (mozbz#1207973)
##
export MOZ_USE_XINPUT2=${MOZ_USE_XINPUT2-1}

# OK, here's where all the real work gets done


##
## To disable the use of Firefox localization, set MOZ_DISABLE_LANGPACKS=1
## in your environment before launching Firefox.
##
#
# MOZ_DISABLE_LANGPACKS=1
# export MOZ_DISABLE_LANGPACKS
#

##
## Automatically installed langpacks are tracked by .fedora-langpack-install
## config file.
##
FEDORA_LANGPACK_CONFIG="$MOZ_EXTENSIONS_PROFILE_DIR/.fedora-langpack-install"

# MOZ_DISABLE_LANGPACKS disables language packs completely
MOZILLA_DOWN=0
if ! [ $MOZ_DISABLE_LANGPACKS ] || [ $MOZ_DISABLE_LANGPACKS -eq 0 ]; then
    if [ -x $MOZ_DIST_BIN/$MOZ_FIREFOX_FILE ]; then
        # Is firefox running?
        /usr/bin/pidof $MOZ_PROGRAM > /dev/null 2>&1
        MOZILLA_DOWN=$?
    fi
fi

# When Firefox is not running, restore SELinux labels for profile files
# (rhbz#1731371)
if [ $MOZILLA_DOWN -ne 0 ]; then
  if [ -x $GETENFORCE_FILE ] && [ `$GETENFORCE_FILE` != "Disabled" ]; then
    (restorecon -vr ~/.mozilla/firefox/* &)
  fi
fi

# Modify language pack configuration only when firefox is not running
# and language packs are not disabled
if [ $MOZILLA_DOWN -ne 0 ]; then

    # Clear already installed langpacks
    mkdir -p $MOZ_EXTENSIONS_PROFILE_DIR
    if [ -f $FEDORA_LANGPACK_CONFIG ]; then
        rm `cat $FEDORA_LANGPACK_CONFIG` > /dev/null 2>&1
        rm $FEDORA_LANGPACK_CONFIG > /dev/null 2>&1
        # remove all empty langpacks dirs while they block installation of langpacks
        rmdir $MOZ_EXTENSIONS_PROFILE_DIR/langpack* > /dev/null 2>&1
    fi

    # Get locale from system
    CURRENT_LOCALE=$LC_ALL
    CURRENT_LOCALE=${CURRENT_LOCALE:-$LC_MESSAGES}
    CURRENT_LOCALE=${CURRENT_LOCALE:-$LANG}

    # Try with a local variant first, then without a local variant
    SHORTMOZLOCALE=`echo $CURRENT_LOCALE | sed "s|_\([^.]*\).*||g" | sed "s|\..*||g"`
    MOZLOCALE=`echo $CURRENT_LOCALE | sed "s|_\([^.]*\).*|-\1|g" | sed "s|\..*||g"`

    function create_langpack_link() {
        local language=$*
        local langpack=langpack-${language}@firefox.mozilla.org.xpi
        if [ -f $MOZ_LANGPACKS_DIR/$langpack ]; then
            rm -rf $MOZ_EXTENSIONS_PROFILE_DIR/$langpack
            # If the target file is a symlink (the fallback langpack),
            # install the original file instead of the fallback one
            if [ -h $MOZ_LANGPACKS_DIR/$langpack ]; then
                langpack=`readlink $MOZ_LANGPACKS_DIR/$langpack`
            fi
            ln -s $MOZ_LANGPACKS_DIR/$langpack \
                  $MOZ_EXTENSIONS_PROFILE_DIR/$langpack
            echo $MOZ_EXTENSIONS_PROFILE_DIR/$langpack > $FEDORA_LANGPACK_CONFIG
            return 0
        fi
        return 1
    }

    create_langpack_link $MOZLOCALE || create_langpack_link $SHORTMOZLOCALE || true
fi

# BEAST fix (rhbz#1005611)
NSS_SSL_CBC_RANDOM_IV=${NSS_SSL_CBC_RANDOM_IV-1}
export NSS_SSL_CBC_RANDOM_IV

# Prepare command line arguments
script_args=""
pass_arg_count=0
while [ $# -gt $pass_arg_count ]
do
  case "$1" in
    -g | --debug)
      script_args="$script_args -g"
      debugging=1
      shift
      ;;
    -d | --debugger)
      if [ $# -gt 1 ]; then
        script_args="$script_args -d $2"
        shift 2
      else
        shift
      fi
      ;;
    *)
      # Move the unrecognized argument to the end of the list.
      arg="$1"
      shift
      set -- "$@" "$arg"
      pass_arg_count=`expr $pass_arg_count + 1`
      ;;
  esac
done

# Flatpak specific environment variables


# Don't throw "old profile" dialog box.
export MOZ_ALLOW_DOWNGRADE=1

# Run the browser
debugging=0
if [ $debugging = 1 ]
then
  echo $MOZ_LAUNCHER $script_args $MOZ_PROGRAM "$@"
fi

exec $MOZ_LAUNCHER $script_args $MOZ_PROGRAM "$@" 

I’ve add this extra script at the top of the # Run the browser section (run sudo gnome-text-editor /usr/bin/firefox to edit the file, if you don’t know how):

# Setup system proxy
if [[ "$(dconf read /system/proxy/mode)" = "'manual'" ]]; then
	echo "proxy: active"
	http_proxy="http://$(dconf read /system/proxy/http/host | cut -c 2- | rev | cut -c 2- | rev):$(dconf read /system/proxy/http/port)"
	HTTP_PROXY="$http_proxy"
	https_proxy="https://$(dconf read /system/proxy/https/host | cut -c 2- | rev | cut -c 2- | rev):$(dconf read /system/proxy/http/port)"
	HTTPS_PROXY="$https_proxy"
	all_proxy="socks://$(dconf read /system/proxy/socks/host | cut -c 2- | rev | cut -c 2- | rev):$(dconf read /system/proxy/socks/port)"
	ALL_PROXY="$all_proxy"
else
	echo "proxy: inactive"
	http_proxy=""
	HTTP_PROXY="$http_proxy"
	https_proxy=""
	HTTPS_PROXY="$https_proxy"
	all_proxy=""
	ALL_PROXY="$all_proxy"
fi
	export https_proxy=$https_proxy
	export HTTPS_PROXY=$HTTPS_PROXY
	export http_proxy=$http_proxy
	export HTTP_PROXY=$HTTP_PROXY
	export ALL_PROXY=$ALL_PROXY
	export all_proxy=$all_proxy

You should close and reopen firefox if you make change to system proxy setting or turn it on/off, but at least now it somehow works :sweat_smile:

After all it seems that The script will NOT setup all the environment voodoo needed to make mozilla work like it says at the top comment.

I don’t know how to apply the proxy settings while it’s running yet but I hope maintainers fix it.