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>

This replaces the use of uci_validate_section() with
uci_load_validate(), which removes the need to declare local variables
for every config option.

This also adds a service_triggers() function and removes some
unnecessary curly brackets.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

Init script to start instances of socat for port-forwarding etc.

Signed-off-by: Henning Schild <henning@hennsch.de>