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32 Commits

Author SHA1 Message Date
Brad Fitzpatrick
a12aad6b47 all: convert more code to use net/netip directly 
perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.)
    perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. )
    goimports -w .

Then delete some stuff from the net/netaddr shim package which is no
longer neeed.

Updates #5162

Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-07-25 21:53:49 -07:00
Brad Fitzpatrick
6a396731eb all: use various net/netip parse funcs directly 
Mechanical change with perl+goimports.

Changed {Must,}Parse{IP,IPPrefix,IPPort} to their netip variants, then
goimports -d .

Finally, removed the net/netaddr wrappers, to prevent future use.

Updates #5162

Change-Id: I59c0e38b5fbca5a935d701645789cddf3d7863ad
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-07-25 21:12:28 -07:00
Brad Fitzpatrick
7eaf5e509f net/netaddr: start migrating to net/netip via new netaddr adapter package 
Updates #5162

Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2022-07-25 16:20:43 -07:00
Josh Bleecher Snyder
0868329936 all: use any instead of interface{} 
My favorite part of generics.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2022-03-17 11:35:09 -07:00
slowy07
ac0353e982 fix: typo spelling grammar 
Signed-off-by: slowy07 <slowy.arfy@gmail.com>
 2021-08-24 07:55:04 -07:00
David Crawshaw
297b3d6fa4 staticcheck.conf: turn off noisy lint errors 
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2021-06-18 15:48:20 -07:00
Josh Bleecher Snyder
25df067dd0 all: adapt to opaque netaddr types 
This commit is a mishmash of automated edits using gofmt:

gofmt -r 'netaddr.IPPort{IP: a, Port: b} -> netaddr.IPPortFrom(a, b)' -w .
gofmt -r 'netaddr.IPPrefix{IP: a, Port: b} -> netaddr.IPPrefixFrom(a, b)' -w .

gofmt -r 'a.IP.Is4 -> a.IP().Is4' -w .
gofmt -r 'a.IP.As16 -> a.IP().As16' -w .
gofmt -r 'a.IP.Is6 -> a.IP().Is6' -w .
gofmt -r 'a.IP.As4 -> a.IP().As4' -w .
gofmt -r 'a.IP.String -> a.IP().String' -w .

And regexps:

\w*(.*)\.Port = (.*)  ->  $1 = $1.WithPort($2)
\w*(.*)\.IP = (.*)  ->  $1 = $1.WithIP($2)

And lots of manual fixups.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-05-16 14:52:00 -07:00
Josh Bleecher Snyder
d31eff8473 tstest/natlab: use net.ErrClosed 
We are now on 1.16.
And wgconn.NetErrClosed has been removed upstream.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-03-24 09:46:36 -07:00
Josh Bleecher Snyder
138055dd70 tstest/natlab: use net.ErrClosed instead of a new error 
Upstream wireguard-go decided to use errors.Is(err, net.ErrClosed)
instead of checking the error string.

It also provided an unsafe linknamed version of net.ErrClosed
for clients running Go 1.15. Switch to that.

This reduces the time required for the wgengine/magicsock tests
on my machine from ~35s back to the ~13s it was before
456cf8a376.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2021-02-05 13:44:46 -08:00
David Anderson
f794493b4f wgengine/magicsock: explicitly check path discovery, add a firewall test. 
The test proves that active discovery can traverse two facing firewalls.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-27 14:09:54 -07:00
David Anderson
5a370d545a tstest/natlab: drop packets that can't be routed in a LAN. 
LANs are authoritative for their prefixes, so we should not bounce
packets back and forth to the default gateway in that case.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-27 14:09:54 -07:00
David Anderson
45578b47f3 tstest/natlab: refactor PacketHandler into a larger interface. 
The new interface lets implementors more precisely distinguish
local traffic from forwarded traffic, and applies different
forwarding logic within Machines for each type. This allows
Machines to be packet forwarders, which didn't quite work
with the implementation of Inject.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-15 14:38:33 -07:00
David Anderson
23123907c0 tstest/natlab: add a configurable SNAT44 translator. 
This lets us implement the most common kinds of NAT in the wild.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-14 12:17:47 -07:00
David Anderson
88e8456e9b wgengine/magicsock: add a connectivity test for facing firewalls. 
The test demonstrates that magicsock can traverse two stateful
firewalls facing each other, that each require localhost to
initiate connections.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-11 07:04:08 +00:00
David Anderson
b3d65ba943 tstest/natlab: refactor, expose a Packet type. 
HandlePacket and Inject now receive/take Packets. This is a handy
container for the packet, and the attached Trace method can be used
to print traces from custom packet handlers that integrate nicely
with natlab's internal traces.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-11 06:33:01 +00:00
David Anderson
5eedbcedd1 tstest/natlab: add a stateful firewall. 
The firewall provides a ProcessPacket handler, and implements an
address-and-port endpoint dependent firewall that allows all
traffic to egress from the trusted interface, and only allows
inbound traffic if corresponding outbound traffic was previously
seen.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-11 05:17:38 +00:00
David Anderson
0ed9f62ed0 tstest/natlab: provide inbound interface to HandlePacket. 
Requires a bunch of refactoring so that Networks only ever
refer to Interfaces that have been attached to them, and
Interfaces know about both their Network and Machine.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-10 20:08:48 -07:00
Brad Fitzpatrick
6c74065053 wgengine/magicsock, tstest/natlab: start hooking up natlab to magicsock 
Also adds ephemeral port support to natlab.

Work in progress.

Pairing with @danderson.
 2020-07-10 14:32:58 -07:00
David Anderson
0aea087766 tstest/natlab: add PacketHandler and Inject. 
Together, they can be used to plug custom packet processors into
Machines.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-02 21:51:09 -07:00
David Anderson
73db7e99ab tstest/natlab: make Machine constructible directly. 
This is a prelude to adding more fields, which would otherwise
become more unnamed function params.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-02 21:51:09 -07:00
David Anderson
d94593e884 tstest/natlab: unregister conn4 if registration of conn6 fails. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-03 02:27:31 +00:00
David Anderson
d7bc4ec029 tstest/natlab: use common helper for conn registration. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-03 02:26:54 +00:00
David Anderson
80a14c49c6 tstest/natlab: add comments to conns4/conns6. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-03 02:23:01 +00:00
David Anderson
622c0d0cb3 tstest/natlab: print trace data when NATLAB_TRACE is set. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-03 02:10:41 +00:00
David Anderson
1d4f9852a7 tstest/natlab: correctly handle dual-stacked PacketConns. 
Adds a test with multiple networks, one of which is v4-only.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-02 19:09:31 -07:00
David Anderson
771eb05bcb tstest/natlab: first network attached becomes the default route. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-03 01:03:05 +00:00
David Anderson
f2e5da916a tstest/natlab: allow sensible default construction of networks. 
Add a test for LAN->LAN traffic.

Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-07-03 00:53:24 +00:00
Brad Fitzpatrick
97910ce712 tstest/natlab: remove unused PacketConner type 2020-07-02 14:50:04 -07:00
Brad Fitzpatrick
3f4f1cfe66 tstest/natlab: basic NAT-free packet delivery works 
Pairing with @danderson
 2020-07-02 14:18:36 -07:00
Brad Fitzpatrick
a477e70632 tstest/natlab: network address allocation 
Pairing with @danderson
 2020-07-02 13:39:41 -07:00
Brad Fitzpatrick
bb1a9e4700 tstest/natlab: bit more of in-memory network testing package 
Pairing with @danderson
 2020-07-02 13:02:13 -07:00
Brad Fitzpatrick
23c93da942 tstest/natlab: start of in-memory network testing package 
Pairing with @danderson
 2020-07-02 12:36:12 -07:00