diff options
Diffstat (limited to 'modules/caddytls/values.go')
| -rw-r--r-- | modules/caddytls/values.go | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/modules/caddytls/values.go b/modules/caddytls/values.go index 21a6b33..d231650 100644 --- a/modules/caddytls/values.go +++ b/modules/caddytls/values.go @@ -17,6 +17,7 @@ package caddytls import ( "crypto/tls" "crypto/x509" + "fmt" "github.com/go-acme/lego/v3/certcrypto" "github.com/klauspost/cpuid" @@ -127,9 +128,36 @@ var SupportedProtocols = map[string]uint16{ "tls1.3": tls.VersionTLS13, } +// unsupportedProtocols is a map of unsupported protocols. +// Used for logging only, not enforcement. +var unsupportedProtocols = map[string]uint16{ + "ssl3.0": tls.VersionSSL30, + "tls1.0": tls.VersionTLS10, + "tls1.1": tls.VersionTLS11, +} + // publicKeyAlgorithms is the map of supported public key algorithms. var publicKeyAlgorithms = map[string]x509.PublicKeyAlgorithm{ "rsa": x509.RSA, "dsa": x509.DSA, "ecdsa": x509.ECDSA, } + +// ProtocolName returns the standard name for the passed protocol version ID +// (e.g. "TLS1.3") or a fallback representation of the ID value if the version +// is not supported. +func ProtocolName(id uint16) string { + for k, v := range SupportedProtocols { + if v == id { + return k + } + } + + for k, v := range unsupportedProtocols { + if v == id { + return k + } + } + + return fmt.Sprintf("0x%04x", id) +} |