#!/usr/bin/php
<?php
/**
 * script: set_proxy
 *
 * Copyright 2005-2024, Lime Technology
 *
 * Call this script (/usr/local/sbin/set_proxy.php) to set up proxy files.
 */

$opmPlugin	= "dynamix";
require_once("plugins/".$opmPlugin."/include/OutgoingProxyLib.php");

/* Files generated by this script based on the data in proxy.cfg. */
$proxy_sh	= '/etc/profile.d/proxy.sh';
$proxy_ini	= '/usr/local/emhttp/state/proxy.ini';

/* Random file extension for atomic writes. */
$rnd		= rand();

/* Comments to beginning of the proxy_sh file. */
$comments	= "#!/bin/bash\n"."# Do not edit. This file is autogenerated by /usr/local/sbin/set_proxy.\n";

/* Set verbose if command line switch is set. */
$verbose = false;
if (isset($argv[1]) && ($argv[1] == '-v')) {
	$verbose = true;
}

/* Initialize global variables. */
$proxy_active	= "";
$proxy_url		= "";
$no_proxy		= "";

/* Write comments and content to a file. */
function write_file($file, $content, $show_comments = false) {
	global $rnd, $comments;

	$tmpFile = "{$file}.{$rnd}";
	file_put_contents($tmpFile, ($show_comments ? $comments : "").$content);
	chmod($tmpFile, 0755);
	rename($tmpFile, $file);
}

/* Write environment variables to /etc/profile.d/proxy.sh. */
function set_proxy_sh() {
	global $proxy_sh, $proxy_url, $no_proxy;

	$content	 = "export http_proxy=".$proxy_url."\n";
	$content	.= "export https_proxy=".$proxy_url."\n";
	$content	.= "export no_proxy=".$no_proxy."\n";

	write_file($proxy_sh, $content, true);
}

/* Clear environment variables from /etc/profile.d/proxy.sh. */
function unset_proxy_sh() {
	global $proxy_sh;

	$content	 = "unset http_proxy\n";
	$content	.= "unset https_proxy\n";
	$content	.= "unset no_proxy\n";

	write_file($proxy_sh, $content, true);
}

/* Write proxy information to /usr/local/emhttp/state/proxy.ini. */
function set_proxy_ini() {
    global $proxy_ini, $proxy_url, $no_proxy;

    $content	 = "http_proxy=".$proxy_url."\n";
	$content	.= "https_proxy=".$proxy_url."\n";
	$content	.= "no_proxy=".$no_proxy."\n";

    write_file($proxy_ini, $content);
}

/* Clear /usr/local/emhttp/state/proxy.ini. */
function unset_proxy_ini() {
    /* Vars are empty now, call set_proxy_ini to add empty vars to proxy.ini. */
    set_proxy_ini();
}

/* Generate proxy files. */
function add_proxy_to_generated_files() {
    global $verbose;

    echo("generating proxy files\n");
    set_proxy_sh();
    set_proxy_ini();
    if ($verbose) {
        display_generated_files();
    }
}

/* Remove proxy info from all generated files. */
function remove_proxy_from_generated_files() {
	global $verbose;

	echo("removing proxy info from generated files\n");
	unset_proxy_sh();
	unset_proxy_ini();
	if ($verbose) {
		display_generated_files();
	}
}

/* When verbose mode is enabled. */
function display_generated_files() {
	global $proxy_sh, $proxy_ini;

	echo("\n");
	display_generated_file($proxy_sh);
	echo("\n");
	display_generated_file($proxy_ini);
}

/* When verbose mode is enabled. */
function display_generated_file($file) {
	echo("file: ".$file."\n");
	if (file_exists($file)) {
		echo(file_get_contents($file));
	} else {
		echo("file does not exist\n");
	}
}

/* Read current proxy information from Outgoing Proxy Manager config file. */
$config = parse_plugin_config();

/* Get the current active proxy. */
$proxy_active	= $config['proxy_active'];
$proxy_url		= "";

/* Only build full url for an active proxy. */
if ($proxy_active != "0") {
	/* Get the active proxy url, user, and pass. */
	$proxy_url		= "proxy_url_".$proxy_active;
	$proxy_user		= "proxy_user_".$proxy_active;
	$proxy_pass		= "proxy_pass_".$proxy_active;

	/* Get the full url for the active proxy. */
	$url_array		= get_proxy_info($config[$proxy_url] ?? "", $config[$proxy_user] ?? "", $config[$proxy_pass] ?? "");
	$proxy_url		= $proxy_active ? $url_array['full_url'] : "";

	/* If the active proxy url is defined, create the generated files. */
	if ($proxy_url) {
		/* Proxies are defined, write generated files. */
		$no_proxy = "127.0.0.1,localhost";
		add_proxy_to_generated_files();
	}
} else {
	/* If no active proxies, remove proxy info from all generated files. */
	remove_proxy_from_generated_files();
}
?>
=======
#!/bin/bash
#
# script: set_proxy
#
# Copyright 2005-2024, Lime Technology
#
# call this script (/usr/local/sbin/set_proxy) when /boot/config/proxy.cfg changes

# proxy.cfg is the source of all proxy information
CFG=/boot/config/proxy.cfg

# these files are generated by this script based on the data in proxy.cfg
PROXY_SH=/etc/profile.d/proxy.sh
PROXY_INI=/usr/local/emhttp/state/proxy.ini

# random file extension for atomic writes
RND=$RANDOM

VERBOSE=
[[ "$1" == "-v" ]] && VERBOSE=1

# global vars defined later
proxy_active=
proxy_url=
no_proxy=

# write environment variables to /etc/profile.d/proxy.sh
set_proxy_sh() {
  local FILE
  FILE="${PROXY_SH}"
  cat <<EOF >"${FILE}.${RND}"
#!/bin/bash
# Do not edit. This file is autogenerated by /usr/local/sbin/set_proxy
export http_proxy="${proxy_url}"
export https_proxy="${proxy_url}"
export no_proxy="${no_proxy}"
EOF
  chmod 755 "${FILE}.${RND}"
  mv "${FILE}.${RND}" "${FILE}"
}

# clear environment variables from /etc/profile.d/proxy.sh
unset_proxy_sh() {
  local FILE
  FILE="${PROXY_SH}"
  cat <<EOF >"${FILE}.${RND}"
#!/bin/bash
# Do not edit. This file is autogenerated by /usr/local/sbin/set_proxy
unset http_proxy
unset https_proxy
unset no_proxy
EOF
  chmod 755 "${FILE}.${RND}"
  mv "${FILE}.${RND}" "${FILE}"
}

set_proxy_ini() {
  local FILE
  FILE="${PROXY_INI}"
  cat <<EOF >"${FILE}.${RND}"
http_proxy="${proxy_url}"
https_proxy="${proxy_url}"
no_proxy="${no_proxy}"
EOF
  chmod 644 "${FILE}.${RND}"
  mv "${FILE}.${RND}" "${FILE}"
}

# clear /usr/local/emhttp/state/proxy.ini
unset_proxy_ini() {
  # vars are empty now, call set_proxy_ini to add empty vars to proxy.ini
  set_proxy_ini
}

# generate proxy files
add_proxy_to_generated_files_and_exit() {
  echo "generating proxy files"
  set_proxy_sh
  set_proxy_ini
  [[ -n "${VERBOSE}" ]] && display_generated_files
  exit 0
}

# remove proxy info from all generated files and exit
remove_proxy_from_generated_files_and_exit() {
  echo "removing proxy info from generated files"
  unset_proxy_sh
  unset_proxy_ini
  [[ -n "${VERBOSE}" ]] && display_generated_files
  exit 0
}

# when verbose mode enabled
display_generated_files() {
  echo
  display_generated_file "${PROXY_SH}"
  display_generated_file "${PROXY_INI}"
}

# when verbose mode enabled
display_generated_file() {
  local FILE
  FILE=$1
  echo "${FILE}"
  [[ -f "${FILE}" ]] && cat "${FILE}" || echo "file does not exist"
  echo
}

# if no proxy config, remove proxy info from all generated files and exit
[[ ! -f "${CFG}" ]] && remove_proxy_from_generated_files_and_exit

# read current proxy information from /boot/config/proxy.cfg
# shellcheck source=/dev/null
. <(/usr/bin/fromdos <"${CFG}")

# determine proxy information
proxy_url_var="proxy_url_${proxy_active:=}"
proxy_url="${!proxy_url_var}"

# if no active proxies, remove proxy info from all generated files and exit
if [[ "${proxy_active:=0}" == "0" || "${proxy_url}" == "" ]]; then
  remove_proxy_from_generated_files_and_exit
fi

# proxies are defined, write generated files
no_proxy="127.0.0.1,localhost"
add_proxy_to_generated_files_and_exit