* xds: refactor ingress listener SDS configuration
* xds: update resolveListenerSDS call args in listeners_test
* ingress: add TLS min, max and cipher suites to GatewayTLSConfig
* xds: implement envoyTLSVersions and envoyTLSCipherSuites
* xds: merge TLS config
* xds: configure TLS parameters with ingress TLS context from leaf
* xds: nil check in resolveListenerTLSConfig validation
* xds: nil check in makeTLSParameters* functions
* changelog: add entry for TLS params on ingress config entries
* xds: remove indirection for TLS params in TLSConfig structs
* xds: return tlsContext, nil instead of ambiguous err
Co-authored-by: Chris S. Kim <ckim@hashicorp.com>
* xds: switch zero checks to types.TLSVersionUnspecified
* ingress: add validation for ingress config entry TLS params
* ingress: validate listener TLS config
* xds: add basic ingress with TLS params tests
* xds: add ingress listeners mixed TLS min version defaults precedence test
* xds: add more explicit tests for ingress listeners inheriting gateway defaults
* xds: add test for single TLS listener on gateway without TLS defaults
* xds: regen golden files for TLSVersionInvalid zero value, add TLSVersionAuto listener test
* types/tls: change TLSVersion to string
* types/tls: update TLSCipherSuite to string type
* types/tls: implement validation functions for TLSVersion and TLSCipherSuites, make some maps private
* api: add TLS params to GatewayTLSConfig, add tests
* api: add TLSMinVersion to ingress gateway config entry test JSON
* xds: switch to Envoy TLS cipher suite encoding from types package
* xds: fixup validation for TLSv1_3 min version with cipher suites
* add some kitchen sink tests and add a missing struct tag
* xds: check if mergedCfg.TLSVersion is in TLSVersionsWithConfigurableCipherSuites
* xds: update connectTLSEnabled comment
* xds: remove unsued resolveGatewayServiceTLSConfig function
* xds: add makeCommonTLSContextFromLeafWithoutParams
* types/tls: add LessThan comparator function for concrete values
* types/tls: change tlsVersions validation map from string to TLSVersion keys
* types/tls: remove unused envoyTLSCipherSuites
* types/tls: enable chacha20 cipher suites for Consul agent
* types/tls: remove insecure cipher suites from allowed config
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 and TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 are both explicitly listed as insecure and disabled in the Go source.
Refs https://cs.opensource.google/go/go/+/refs/tags/go1.17.3:src/crypto/tls/cipher_suites.go;l=329-330
* types/tls: add ValidateConsulAgentCipherSuites function, make direct lookup map private
* types/tls: return all unmatched cipher suites in validation errors
* xds: check that Envoy API value matching TLS version is found when building TlsParameters
* types/tls: check that value is found in map before appending to slice in MarshalEnvoyTLSCipherSuiteStrings
* types/tls: cast to string rather than fmt.Printf in TLSCihperSuite.String()
* xds: add TLSVersionUnspecified to list of configurable cipher suites
* structs: update note about config entry warning
* xds: remove TLS min version cipher suite unconfigurable test placeholder
* types/tls: update tests to remove assumption about private map values
Co-authored-by: R.B. Boyer <rb@hashicorp.com>
Mike Morris