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all: adapt to opaque netaddr types

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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>
This commit is contained in:
Josh Bleecher Snyder
2021-05-14 18:07:28 -07:00
committed by Josh Bleecher Snyder
parent 4f92f405ee
commit 25df067dd0
54 changed files with 358 additions and 371 deletions
Download Patch File Download Diff File Expand all files Collapse all files
wgengine/filter/filter.go
+12 -14
View File
@@ -98,8 +98,8 @@ const (
// everything. Use in tests only, as it permits some kinds of spoofing
// attacks to reach the OS network stack.
func NewAllowAllForTest(logf logger.Logf) *Filter {
any4 := netaddr.IPPrefix{IP: netaddr.IPv4(0, 0, 0, 0), Bits: 0}
any6 := netaddr.IPPrefix{IP: netaddr.IPFrom16([16]byte{}), Bits: 0}
any4 := netaddr.IPPrefixFrom(netaddr.IPv4(0, 0, 0, 0), 0)
any6 := netaddr.IPPrefixFrom(netaddr.IPFrom16([16]byte{}), 0)
ms := []Match{
{
Srcs: []netaddr.IPPrefix{any4},
@@ -185,12 +185,12 @@ func matchesFamily(ms matches, keep func(netaddr.IP) bool) matches {
var retm Match
retm.IPProto = m.IPProto
for _, src := range m.Srcs {
if keep(src.IP) {
if keep(src.IP()) {
retm.Srcs = append(retm.Srcs, src)
}
}
for _, dst := range m.Dsts {
if keep(dst.Net.IP) {
if keep(dst.Net.IP()) {
retm.Dsts = append(retm.Dsts, dst)
}
}
@@ -266,12 +266,10 @@ func (f *Filter) CheckTCP(srcIP, dstIP netaddr.IP, dstPort uint16) Response {
default:
panic("unreachable")
}
pkt.Src.IP = srcIP
pkt.Dst.IP = dstIP
pkt.Src = netaddr.IPPortFrom(srcIP, 0)
pkt.Dst = netaddr.IPPortFrom(dstIP, dstPort)
pkt.IPProto = ipproto.TCP
pkt.TCPFlags = packet.TCPSyn
pkt.Src.Port = 0
pkt.Dst.Port = dstPort
return f.RunIn(pkt, 0)
}
@@ -321,7 +319,7 @@ func (f *Filter) runIn4(q *packet.Parsed) (r Response, why string) {
// A compromised peer could try to send us packets for
// destinations we didn't explicitly advertise. This check is to
// prevent that.
if !f.local.Contains(q.Dst.IP) {
if !f.local.Contains(q.Dst.IP()) {
return Drop, "destination not allowed"
}
@@ -378,7 +376,7 @@ func (f *Filter) runIn6(q *packet.Parsed) (r Response, why string) {
// A compromised peer could try to send us packets for
// destinations we didn't explicitly advertise. This check is to
// prevent that.
if !f.local.Contains(q.Dst.IP) {
if !f.local.Contains(q.Dst.IP()) {
return Drop, "destination not allowed"
}
@@ -480,11 +478,11 @@ func (f *Filter) pre(q *packet.Parsed, rf RunFlags, dir direction) Response {
return Drop
}
if q.Dst.IP.IsMulticast() {
if q.Dst.IP().IsMulticast() {
f.logRateLimit(rf, q, dir, Drop, "multicast")
return Drop
}
if q.Dst.IP.IsLinkLocalUnicast() && q.Dst.IP != gcpDNSAddr {
if q.Dst.IP().IsLinkLocalUnicast() && q.Dst.IP() != gcpDNSAddr {
f.logRateLimit(rf, q, dir, Drop, "link-local-unicast")
return Drop
}
@@ -506,7 +504,7 @@ func (f *Filter) pre(q *packet.Parsed, rf RunFlags, dir direction) Response {
// loggingAllowed reports whether p can appear in logs at all.
func (f *Filter) loggingAllowed(p *packet.Parsed) bool {
return f.logIPs.Contains(p.Src.IP) && f.logIPs.Contains(p.Dst.IP)
return f.logIPs.Contains(p.Src.IP()) && f.logIPs.Contains(p.Dst.IP())
}
// omitDropLogging reports whether packet p, which has already been
@@ -518,5 +516,5 @@ func omitDropLogging(p *packet.Parsed, dir direction) bool {
return false
}
return p.Dst.IP.IsMulticast() || (p.Dst.IP.IsLinkLocalUnicast() && p.Dst.IP != gcpDNSAddr) || p.IPProto == ipproto.IGMP
return p.Dst.IP().IsMulticast() || (p.Dst.IP().IsLinkLocalUnicast() && p.Dst.IP() != gcpDNSAddr) || p.IPProto == ipproto.IGMP
}