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net/socks5/tssocks: add new package, move SOCKS5 glue out of tailscaled

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Prep for #1970, #2264, #2268

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-06-28 11:29:25 -07:00
parent 5e19ac7adc
commit 3910c1edaf
4 changed files with 74 additions and 38 deletions
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5
cmd/tailscaled/depaware.txt
View File

@@ -110,7 +110,8 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
💣 tailscale.com/net/netstat from tailscale.com/ipn/ipnserver
tailscale.com/net/packet from tailscale.com/wgengine+
tailscale.com/net/portmapper from tailscale.com/net/netcheck+
tailscale.com/net/socks5 from tailscale.com/cmd/tailscaled
tailscale.com/net/socks5 from tailscale.com/net/socks5/tssocks
tailscale.com/net/socks5/tssocks from tailscale.com/cmd/tailscaled
tailscale.com/net/stun from tailscale.com/net/netcheck+
tailscale.com/net/tlsdial from tailscale.com/control/controlclient+
tailscale.com/net/tsaddr from tailscale.com/ipn/ipnlocal+
@@ -154,7 +155,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/wgengine/filter from tailscale.com/control/controlclient+
tailscale.com/wgengine/magicsock from tailscale.com/wgengine+
tailscale.com/wgengine/monitor from tailscale.com/wgengine+
tailscale.com/wgengine/netstack from tailscale.com/cmd/tailscaled
tailscale.com/wgengine/netstack from tailscale.com/cmd/tailscaled+
tailscale.com/wgengine/router from tailscale.com/cmd/tailscaled+
tailscale.com/wgengine/wgcfg from tailscale.com/ipn/ipnlocal+
tailscale.com/wgengine/wgcfg/nmcfg from tailscale.com/ipn/ipnlocal

36
cmd/tailscaled/tailscaled.go
View File

@@ -24,22 +24,18 @@ import (
"runtime/debug"
"strconv"
"strings"
"sync"
"syscall"
"time"
"github.com/go-multierror/multierror"
"inet.af/netaddr"
"tailscale.com/ipn/ipnserver"
"tailscale.com/logpolicy"
"tailscale.com/net/dns"
"tailscale.com/net/socks5"
"tailscale.com/net/tsaddr"
"tailscale.com/net/socks5/tssocks"
"tailscale.com/net/tstun"
"tailscale.com/paths"
"tailscale.com/types/flagtype"
"tailscale.com/types/logger"
"tailscale.com/types/netmap"
"tailscale.com/util/osshare"
"tailscale.com/version"
"tailscale.com/version/distro"
@@ -248,35 +244,7 @@ func run() error {
}
if socksListener != nil {
srv := &socks5.Server{
Logf: logger.WithPrefix(logf, "socks5: "),
}
var (
mu sync.Mutex // guards the following field
dns netstack.DNSMap
)
e.AddNetworkMapCallback(func(nm *netmap.NetworkMap) {
mu.Lock()
defer mu.Unlock()
dns = netstack.DNSMapFromNetworkMap(nm)
})
useNetstackForIP := func(ip netaddr.IP) bool {
// TODO(bradfitz): this isn't exactly right.
// We should also support subnets when the
// prefs are configured as such.
return tsaddr.IsTailscaleIP(ip)
}
srv.Dialer = func(ctx context.Context, network, addr string) (net.Conn, error) {
ipp, err := dns.Resolve(ctx, addr)
if err != nil {
return nil, err
}
if ns != nil && useNetstackForIP(ipp.IP()) {
return ns.DialContextTCP(ctx, addr)
}
var d net.Dialer
return d.DialContext(ctx, network, ipp.String())
}
srv := tssocks.NewServer(logger.WithPrefix(logf, "socks5: "), e, ns)
go func() {
log.Fatalf("SOCKS5 server exited: %v", srv.Serve(socksListener))
}()