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Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

Mirrored from https://github.com/Slazee/caddy.git

Synced Nov 12, 12:00 UTC

caddytls: set server name in context (#6324)

Set the requested server name in a context value for CertGetter implementations to use. Pass ctx to tscert.GetCertificateWithContext. Signed-off-by: Will Norris <will@tailscale.com>

Will Norris committed May 18, 2024 at 02:52 UTC e66040a6f0b384d9cebd38a78f746f08f4cb22c1
3 files changed +8 -4
go.mod
+1 -1
@@ -26,7 +26,7 @@ require (
26 github.com/spf13/cobra v1.8.0
27 github.com/spf13/pflag v1.0.5
28 github.com/stretchr/testify v1.9.0
29 - github.com/tailscale/tscert v0.0.0-20230806124524-28a91b69a046
29 + github.com/tailscale/tscert v0.0.0-20240517230440-bbccfbf48933
30 github.com/yuin/goldmark v1.7.1
31 github.com/yuin/goldmark-highlighting/v2 v2.0.0-20230729083705-37449abec8cc
32 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.1
go.sum
+2 -2
@@ -410,8 +410,8 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
410 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
411 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
412 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
413 -github.com/tailscale/tscert v0.0.0-20230806124524-28a91b69a046 h1:8rUlviSVOEe7TMk7W0gIPrW8MqEzYfZHpsNWSf8s2vg=
414 -github.com/tailscale/tscert v0.0.0-20230806124524-28a91b69a046/go.mod h1:kNGUQ3VESx3VZwRwA9MSCUegIl6+saPL8Noq82ozCaU=
413 +github.com/tailscale/tscert v0.0.0-20240517230440-bbccfbf48933 h1:pV0H+XIvFoP7pl1MRtyPXh5hqoxB5I7snOtTHgrn6HU=
414 +github.com/tailscale/tscert v0.0.0-20240517230440-bbccfbf48933/go.mod h1:kNGUQ3VESx3VZwRwA9MSCUegIl6+saPL8Noq82ozCaU=
415 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
416 github.com/urfave/cli v1.22.14 h1:ebbhrRiGK2i4naQJr+1Xj92HXZCrK7MsyTS/ob3HnAk=
417 github.com/urfave/cli v1.22.14/go.mod h1:X0eDS6pD6Exaclxm99NJ3FiCDRED7vIHpx2mDOHLvkA=
modules/caddytls/certmanagers.go
+5 -1
@@ -22,6 +22,9 @@ func init() {
22 caddy.RegisterModule(HTTPCertGetter{})
23 }
24
25 +// For referencing the requested SNI server name.
26 +const ClientHelloSNICtxKey caddy.CtxKey = "client_hello_sni"
27 +
28 // Tailscale is a module that can get certificates from the local Tailscale process.
29 type Tailscale struct {
30 logger *zap.Logger
@@ -41,6 +44,7 @@ func (ts *Tailscale) Provision(ctx caddy.Context) error {
44 }
45
46 func (ts Tailscale) GetCertificate(ctx context.Context, hello *tls.ClientHelloInfo) (*tls.Certificate, error) {
47 + ctx = context.WithValue(ctx, ClientHelloSNICtxKey, hello.ServerName)
48 canGetCert, err := ts.canHazCertificate(ctx, hello)
49 if err == nil && !canGetCert {
50 return nil, nil // pass-thru: Tailscale can't offer a cert for this name
@@ -48,7 +52,7 @@ func (ts Tailscale) GetCertificate(ctx context.Context, hello *tls.ClientHelloIn
52 if err != nil {
53 ts.logger.Warn("could not get status; will try to get certificate anyway", zap.Error(err))
54 }
51 - return tscert.GetCertificate(hello)
55 + return tscert.GetCertificateWithContext(ctx, hello)
56 }
57
58 // canHazCertificate returns true if Tailscale reports it can get a certificate for the given ClientHello.