packages/net/socat/files/socat.init
Dobroslaw Kijowski 218b7521aa socat: allow more complex command line options
Current implementation of socat's init service doesn't allow to run more
complex configurations. As an example there's no possibility to execute
following command:

  socat TCP-LISTEN:8080,fork,reuseaddr,bind=192.168.1.1 \
    EXEC:"/sbin/ip netns exec somenetns socat STDIO TCP:10.0.0.1:80"

In such command the first line is argv[1] and the second line is
argv[2]. SocatOptions config option is a string. As as a consequence of
this each word will be passed as a separate argv element. Socat won't be
able to parse arguments correctly.

In order to mitigate this issue, we can also accept SocatOptions as a
list of strings. Following config file will work correctly:

config socat 'tunnel_8080_into_somenetns'
	option enable '1'
	list SocatOptions 'TCP-LISTEN:8080,fork,reuseaddr,bind=192.168.1.1'
	list SocatOptions 'EXEC:"/sbin/ip netns exec somenetns socat STDIO TCP:10.0.0.1:80"'

While we're at it, pass stdout and stderr into logread.

Signed-off-by: Dobroslaw Kijowski <dobo90@gmail.com>
2021-01-27 21:24:38 +01:00

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#!/bin/sh /etc/rc.common
# Copyright (C) 2008-2014 OpenWrt.org
START=99
STOP=99
USE_PROCD=1
PROG=/usr/bin/socat
NAME=socat
validate_section_socat()
{
uci_load_validate socat socat "$1" "$2" \
'enable:bool:1' \
'SocatOptions:or(string, list(string))'
}
append_param_command()
{
procd_append_param command "$1"
}
socat_instance()
{
local is_list
[ "$2" = 0 ] || {
echo "validation failed"
return 1
}
[ "$enable" = "0" ] && return 1
procd_open_instance
procd_set_param command "$PROG"
config_get is_list "$1" SocatOptions_LENGTH
if [ -z "$is_list" ]; then
procd_append_param command $SocatOptions
else
config_list_foreach "$1" SocatOptions append_param_command
fi
procd_set_param stdout 1
procd_set_param stderr 1
procd_close_instance
}
start_service () {
config_load "$NAME"
config_foreach validate_section_socat socat socat_instance
}
service_triggers() {
procd_add_reload_trigger "$NAME"
procd_add_validation validate_section_socat
}