The OpenWrt Makefile that builds miniupnpd passes the firewall argument
to the configure script, so this is not needed and it is blocking us
from using nftables instead, which will be the default backend for
firewall4 to be used in the next OpenWrt stable release.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
There is missing corner case check when these functions return failure.
Network in this case does not work, so disable port forwarding to prevent
returning incorrect response about port forwarding state.
Also explicitly set disable_port_forwarding to 0 on success to make code
more readable.
Terminate the awk after getting the first interface name and IP address
from 'ip -4 addr' output. Otherwise, the test fails if the interface
in question has multiple IP addresses, as the test program returns
the first address, while awk prints all.
Fall back to getting the interface name from 'ip -4 addr' when there
is no default route. In this case, the test simply uses the interface
providing the IP address for 'ip -4 addr' (since the command is
implicitly called with no interface argument).
NFTables supports inet in the nat chain as well.
Use it instead of IPv4 chain so it is consistent with the filter chain.
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
This patch adds a lease file for IPv6 pinholes.
The leases are maintained and readded when miniupnpd restarts.
Currently all IPv6 leases are lost on restart.
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Obviously port forwarding cannot work when upstream interface is down. So
correctly report status code for port forwarding requests to clients in
this case.
IGD v2.0 specification for WANIPConnection:2 says:
When the external IP address could not be retrieved by the gateway (for
example, because the interface is down or because there was a failure in
the last connection setup attempt), then the ExternalIPAddress MUST be
equal to the empty string.
So instead of Error 501 "Action Failed" returns empty string to be
compliant with IGD v2.0 specification.
Option listen= is used for LAN interface/address and option ext_addr= is
used for public IP address. If users by mistake swap WAN and LAN interface
or public and private IP addresses then miniupnpd obviously would not work
and instead of hacking miniupnpd code users should rather check their
miniupnpd configuration or local firewall settings.
So add checks and hints which prevents security issues like swapping LAN
and WAN interfaces/addresses and therefore prevent exposing port forwarding
and firewall configuration on public Internet.
Thomas BERNARD
Stijn Tintel
Pali Rohár
Michał Górny
Sven Auhagen
Natanael Copa
SeaEagle1