Currently the config_entry.go subsystem delegates authorization decisions via the ConfigEntry interface CanRead and CanWrite code. Unfortunately this returns a true/false value and loses the details of the source.
This is not helpful, especially since it the config subsystem can be more complex to understand, since it covers so many domains.
This refactors CanRead/CanWrite to return a structured error message (PermissionDenied or the like) with more details about the reason for denial.
Part of #12241
Signed-off-by: Mark Anderson <manderson@hashicorp.com>
* 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>
Previous to this commit, the API response would include Gateway
Addresses in the form `domain.name.:8080`, which due to the addition of
the port is probably not the expected response.
This commit rightTrims any `.` characters from the end of the domain
before formatting the address to include the port resulting in
`domain.name:8080`
These types are used as values (not pointers) in other structs. Using a pointer receiver causes
problems when the value is printed. fmt will not call the String method if it is passed a value
and the String method has a pointer receiver. By using a value receiver the correct string is printed.
Also remove some unused methods.
Fixes#8466
Since Consul 1.8.0 there was a bug in how ingress gateway protocol
compatibility was enforced. At the point in time that an ingress-gateway
config entry was modified the discovery chain for each upstream was
checked to ensure the ingress gateway protocol matched. Unfortunately
future modifications of other config entries were not validated against
existing ingress-gateway definitions, such as:
1. create tcp ingress-gateway pointing to 'api' (ok)
2. create service-defaults for 'api' setting protocol=http (worked, but not ok)
3. create service-splitter or service-router for 'api' (worked, but caused an agent panic)
If you were to do these in a different order, it would fail without a
crash:
1. create service-defaults for 'api' setting protocol=http (ok)
2. create service-splitter or service-router for 'api' (ok)
3. create tcp ingress-gateway pointing to 'api' (fail with message about
protocol mismatch)
This PR introduces the missing validation. The two new behaviors are:
1. create tcp ingress-gateway pointing to 'api' (ok)
2. (NEW) create service-defaults for 'api' setting protocol=http ("ok" for back compat)
3. (NEW) create service-splitter or service-router for 'api' (fail with
message about protocol mismatch)
In consideration for any existing users that may be inadvertently be
falling into item (2) above, that is now officiall a valid configuration
to be in. For anyone falling into item (3) above while you cannot use
the API to manufacture that scenario anymore, anyone that has old (now
bad) data will still be able to have the agent use them just enough to
generate a new agent/proxycfg error message rather than a panic.
Unfortunately we just don't have enough information to properly fix the
config entries.
Previously, we were only returning a single ListenerPort for a single
service. However, we actually allow a single service to be serviced over
multiple ports, as well as allow users to define what hostnames they
expect their services to be contacted over. When no hosts are defined,
we return the default ingress domain for any configured DNS domain.
To show this in the UI, we modify the gateway-services-nodes API to
return a GatewayConfig.Addresses field, which is a list of addresses
over which the specific service can be contacted.
We can only allow host names that are valid domain names because we put
these hosts into a DNSSAN. In addition, we validate that the wildcard
specifier '*' is only present as the leftmost label to allow for a
wildcard DNSSAN and associated wildcard Host routing in the ingress
gateway proxy.
- Validate that this cannot be set on a 'tcp' listener nor on a wildcard
service.
- Add Hosts field to api and test in consul config write CLI
- xds: Configure envoy with user-provided hosts from ingress gateways
This commit adds the necessary changes to allow an ingress gateway to
route traffic from a single defined port to multiple different upstream
services in the Consul mesh.
To do this, we now require all HTTP requests coming into the ingress
gateway to specify a Host header that matches "<service-name>.*" in
order to correctly route traffic to the correct service.
- Differentiate multiple listener's route names by port
- Adds a case in xds for allowing default discovery chains to create a
route configuration when on an ingress gateway. This allows default
services to easily use host header routing
- ingress-gateways have a single route config for each listener
that utilizes domain matching to route to different services.
* Implements a simple, tcp ingress gateway workflow
This adds a new type of gateway for allowing Ingress traffic into Connect from external services.
Co-authored-by: Chris Piraino <cpiraino@hashicorp.com>
This config entry will be used to configure terminating gateways.
It accepts the name of the gateway and a list of services the gateway will represent.
For each service users will be able to specify: its name, namespace, and additional options for TLS origination.
Co-authored-by: Kyle Havlovitz <kylehav@gmail.com>
Co-authored-by: Chris Piraino <cpiraino@hashicorp.com>
* Add Ingress gateway config entry and other relevant structs
* Add api package tests for ingress gateways
* Embed EnterpriseMeta into ingress service struct
* Add namespace fields to api module and test consul config write decoding
* Don't require a port for ingress gateways
* Add snakeJSON and camelJSON cases in command test
* Run Normalize on service's ent metadata
Sadly cannot think of a way to test this in OSS.
* Every protocol requires at least 1 service
* Validate ingress protocols
* Update agent/structs/config_entry_gateways.go
Co-authored-by: Chris Piraino <cpiraino@hashicorp.com>
Co-authored-by: Freddy <freddygv@users.noreply.github.com>
Mark Anderson
Mike Morris
freddygv
Paul Banks
Freddy
R.B. Boyer
R.B. Boyer
John Cowen
Daniel Nephin
Jack
Chris Piraino
freddygv
Daniel Nephin
Kyle Havlovitz