CA Provider Plugins (#4751)
This adds the `agent/connect/ca/plugin` library for consuming/serving Connect CA providers as [go-plugin](https://github.com/hashicorp/go-plugin) plugins. This **does not** wire this up in any way to Consul itself, so this will not enable using these plugins yet. ## Why? We want to enable CA providers to be pluggable without modifying Consul so that any CA or PKI system can potentially back the Connect certificates. This CA system may also be used in the future for easier bootstrapping and internal cluster security. ### go-plugin The benefit of `go-plugin` is that for the plugin consumer, the fact that the interface implementation is communicating over multi-process RPC is invisible. Internals of Consul will continue to just use `ca.Provider` interface implementations as if they're local. For plugin _authors_, they simply have to implement the interface. The network/transport/process management issues are handled by go-plugin itself. The CA provider plugins support both `net/rpc` and gRPC transports. This enables easy authoring in any language. go-plugin handles the actual protocol handshake and connection. This is just a feature of go-plugin. `go-plugin` is already in production use for years by Packer, Terraform, Nomad, Vault, and Sentinel. We've shown stability for both desktop and server-side software. It is very mature. ## Implementation Details ### `map[string]interface{}` The `Configure` method passes a `map[string]interface{}`. This map contains only Go primitives and containers of primitives (no funcs, chans, etc.). For `net/rpc` we encode as-is using Gob. For gRPC we marshal to JSON and transmit as a `bytes` type. This is the same approach we take with Vault and other software. Note that this is just the transport protocol, the end software views it fully decoded. ### `x509.Certificate` and `CertificateRequest` We transmit the raw ASN.1 bytes and decode on the other side. Unit tests are verifying we get the same cert/csrs across the wire. ### Testing `go-plugin` exposes test helpers that enable testing the full plugin RPC over real loopback network connections. We test all endpoints for success and error for both `net/rpc` and gRPC. ### Vendoring This PR doesn't introduce vendoring for two reasons: 1. @banks's `f-envoy` branch introduces a lot of these and I didn't want conflict. 2. The library isn't actually used yet so it doesn't introduce compile-time errors (it does introduce test errors). ## Next Steps With this in place, we need to figure out the proper way to actually hook these up to Consul, load them, etc. This discussion can happen elsewhere, since regardless of approach this plugin library implementation is the exact same.
This commit is contained in:
Mitchell Hashimoto
Matt Keeler
parent
801e7e1c38
commit
5452c32f50
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@ -7,7 +7,9 @@ GOTOOLS = \
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|||
golang.org/x/tools/cmd/cover \
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golang.org/x/tools/cmd/stringer \
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github.com/axw/gocov/gocov \
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gopkg.in/matm/v1/gocov-html
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gopkg.in/matm/v1/gocov-html \
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github.com/gogo/protobuf/protoc-gen-gofast \
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github.com/vektra/mockery/cmd/mockery
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GOTAGS ?=
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GOFILES ?= $(shell go list ./... | grep -v /vendor/)
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@ -271,6 +273,8 @@ ui-docker: ui-build-image
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ui-legacy-docker: ui-legacy-build-image
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@$(SHELL) $(CURDIR)/build-support/scripts/build-docker.sh ui-legacy
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proto:
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protoc agent/connect/ca/plugin/*.proto --gofast_out=plugins=grpc:../../..
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.PHONY: all ci bin dev dist cov test test-ci test-internal test-install-deps cover format vet ui static-assets tools vendorfmt
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.PHONY: docker-images go-build-image ui-build-image ui-legacy-build-image static-assets-docker consul-docker ui-docker ui-legacy-docker version
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.PHONY: docker-images go-build-image ui-build-image ui-legacy-build-image static-assets-docker consul-docker ui-docker ui-legacy-docker version proto
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|
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@ -0,0 +1,214 @@
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// Code generated by mockery v1.0.0. DO NOT EDIT.
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package ca
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import mock "github.com/stretchr/testify/mock"
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import x509 "crypto/x509"
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// MockProvider is an autogenerated mock type for the Provider type
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type MockProvider struct {
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mock.Mock
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}
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// ActiveIntermediate provides a mock function with given fields:
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func (_m *MockProvider) ActiveIntermediate() (string, error) {
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ret := _m.Called()
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var r0 string
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if rf, ok := ret.Get(0).(func() string); ok {
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r0 = rf()
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func() error); ok {
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r1 = rf()
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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// ActiveRoot provides a mock function with given fields:
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func (_m *MockProvider) ActiveRoot() (string, error) {
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ret := _m.Called()
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var r0 string
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if rf, ok := ret.Get(0).(func() string); ok {
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r0 = rf()
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func() error); ok {
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r1 = rf()
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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// Cleanup provides a mock function with given fields:
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func (_m *MockProvider) Cleanup() error {
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ret := _m.Called()
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var r0 error
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if rf, ok := ret.Get(0).(func() error); ok {
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r0 = rf()
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} else {
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r0 = ret.Error(0)
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}
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return r0
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}
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// Configure provides a mock function with given fields: clusterId, isRoot, rawConfig
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func (_m *MockProvider) Configure(clusterId string, isRoot bool, rawConfig map[string]interface{}) error {
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ret := _m.Called(clusterId, isRoot, rawConfig)
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var r0 error
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if rf, ok := ret.Get(0).(func(string, bool, map[string]interface{}) error); ok {
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r0 = rf(clusterId, isRoot, rawConfig)
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} else {
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r0 = ret.Error(0)
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}
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return r0
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}
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// CrossSignCA provides a mock function with given fields: _a0
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func (_m *MockProvider) CrossSignCA(_a0 *x509.Certificate) (string, error) {
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ret := _m.Called(_a0)
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var r0 string
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if rf, ok := ret.Get(0).(func(*x509.Certificate) string); ok {
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r0 = rf(_a0)
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func(*x509.Certificate) error); ok {
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r1 = rf(_a0)
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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// GenerateIntermediate provides a mock function with given fields:
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func (_m *MockProvider) GenerateIntermediate() (string, error) {
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ret := _m.Called()
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var r0 string
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if rf, ok := ret.Get(0).(func() string); ok {
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r0 = rf()
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func() error); ok {
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r1 = rf()
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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// GenerateIntermediateCSR provides a mock function with given fields:
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func (_m *MockProvider) GenerateIntermediateCSR() (string, error) {
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ret := _m.Called()
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var r0 string
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if rf, ok := ret.Get(0).(func() string); ok {
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r0 = rf()
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func() error); ok {
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r1 = rf()
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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// GenerateRoot provides a mock function with given fields:
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func (_m *MockProvider) GenerateRoot() error {
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ret := _m.Called()
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var r0 error
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if rf, ok := ret.Get(0).(func() error); ok {
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r0 = rf()
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} else {
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r0 = ret.Error(0)
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}
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return r0
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}
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// SetIntermediate provides a mock function with given fields: intermediatePEM, rootPEM
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func (_m *MockProvider) SetIntermediate(intermediatePEM string, rootPEM string) error {
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ret := _m.Called(intermediatePEM, rootPEM)
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var r0 error
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if rf, ok := ret.Get(0).(func(string, string) error); ok {
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r0 = rf(intermediatePEM, rootPEM)
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} else {
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r0 = ret.Error(0)
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}
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return r0
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}
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// Sign provides a mock function with given fields: _a0
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func (_m *MockProvider) Sign(_a0 *x509.CertificateRequest) (string, error) {
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ret := _m.Called(_a0)
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var r0 string
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if rf, ok := ret.Get(0).(func(*x509.CertificateRequest) string); ok {
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r0 = rf(_a0)
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func(*x509.CertificateRequest) error); ok {
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r1 = rf(_a0)
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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// SignIntermediate provides a mock function with given fields: _a0
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func (_m *MockProvider) SignIntermediate(_a0 *x509.CertificateRequest) (string, error) {
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ret := _m.Called(_a0)
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var r0 string
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if rf, ok := ret.Get(0).(func(*x509.CertificateRequest) string); ok {
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r0 = rf(_a0)
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} else {
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r0 = ret.Get(0).(string)
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}
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var r1 error
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if rf, ok := ret.Get(1).(func(*x509.CertificateRequest) error); ok {
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r1 = rf(_a0)
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} else {
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r1 = ret.Error(1)
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}
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return r0, r1
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}
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@ -0,0 +1,18 @@
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package plugin
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import (
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"github.com/hashicorp/go-plugin"
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)
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// ClientConfig returns a base *plugin.ClientConfig that is configured to
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// be able to dispense CA provider plugins. The returned value should be
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// modified with additional options prior to execution (such as Cmd, Managed,
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// etc.)
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func ClientConfig() *plugin.ClientConfig {
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return &plugin.ClientConfig{
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HandshakeConfig: handshakeConfig,
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Plugins: map[string]plugin.Plugin{
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Name: &ProviderPlugin{},
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},
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}
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}
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@ -0,0 +1,41 @@
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package plugin
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import (
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"context"
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"net/rpc"
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"github.com/hashicorp/consul/agent/connect/ca"
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"github.com/hashicorp/go-plugin"
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"google.golang.org/grpc"
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)
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// ProviderPlugin implements plugin.Plugin for initializing a plugin
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// server and client for both net/rpc and gRPC.
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type ProviderPlugin struct {
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Impl ca.Provider
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}
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func (p ProviderPlugin) Server(*plugin.MuxBroker) (interface{}, error) {
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return &providerPluginRPCServer{impl: p.Impl}, nil
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}
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func (ProviderPlugin) Client(b *plugin.MuxBroker, c *rpc.Client) (interface{}, error) {
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return &providerPluginRPCClient{client: c}, nil
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}
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func (p ProviderPlugin) GRPCServer(_ *plugin.GRPCBroker, s *grpc.Server) error {
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RegisterCAServer(s, &providerPluginGRPCServer{impl: p.Impl})
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return nil
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}
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func (ProviderPlugin) GRPCClient(doneCtx context.Context, _ *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
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return &providerPluginGRPCClient{
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client: NewCAClient(c),
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clientConn: c,
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doneCtx: doneCtx,
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}, nil
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}
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// Verification
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var _ plugin.Plugin = ProviderPlugin{}
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var _ plugin.GRPCPlugin = ProviderPlugin{}
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@ -0,0 +1,311 @@
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package plugin
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import (
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"crypto/x509"
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"encoding/pem"
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"errors"
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"testing"
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"github.com/hashicorp/consul/agent/connect"
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"github.com/hashicorp/consul/agent/connect/ca"
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"github.com/hashicorp/go-plugin"
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"github.com/stretchr/testify/mock"
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"github.com/stretchr/testify/require"
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)
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func TestProvider_Configure(t *testing.T) {
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testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
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require := require.New(t)
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// Basic configure
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m.On("Configure", "foo", false, map[string]interface{}{
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"string": "bar",
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"number": float64(42), // because json
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}).Once().Return(nil)
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require.NoError(p.Configure("foo", false, map[string]interface{}{
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"string": "bar",
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"number": float64(42),
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}))
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m.AssertExpectations(t)
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// Try with an error
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m.Mock = mock.Mock{}
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m.On("Configure", "foo", false, map[string]interface{}{}).Once().Return(errors.New("hello world"))
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err := p.Configure("foo", false, map[string]interface{}{})
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require.Error(err)
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require.Contains(err.Error(), "hello")
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m.AssertExpectations(t)
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})
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}
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func TestProvider_GenerateRoot(t *testing.T) {
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testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
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require := require.New(t)
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// Try cleanup with no error
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m.On("GenerateRoot").Once().Return(nil)
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require.NoError(p.GenerateRoot())
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m.AssertExpectations(t)
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// Try with an error
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m.Mock = mock.Mock{}
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m.On("GenerateRoot").Once().Return(errors.New("hello world"))
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err := p.GenerateRoot()
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require.Error(err)
|
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require.Contains(err.Error(), "hello")
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m.AssertExpectations(t)
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})
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}
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func TestProvider_ActiveRoot(t *testing.T) {
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testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
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require := require.New(t)
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// Try cleanup with no error
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m.On("ActiveRoot").Once().Return("foo", nil)
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actual, err := p.ActiveRoot()
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require.NoError(err)
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require.Equal(actual, "foo")
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m.AssertExpectations(t)
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// Try with an error
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m.Mock = mock.Mock{}
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m.On("ActiveRoot").Once().Return("", errors.New("hello world"))
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actual, err = p.ActiveRoot()
|
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require.Error(err)
|
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require.Contains(err.Error(), "hello")
|
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m.AssertExpectations(t)
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})
|
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}
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func TestProvider_GenerateIntermediateCSR(t *testing.T) {
|
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testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
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require := require.New(t)
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// Try cleanup with no error
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m.On("GenerateIntermediateCSR").Once().Return("foo", nil)
|
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actual, err := p.GenerateIntermediateCSR()
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require.NoError(err)
|
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require.Equal(actual, "foo")
|
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m.AssertExpectations(t)
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|
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// Try with an error
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m.Mock = mock.Mock{}
|
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m.On("GenerateIntermediateCSR").Once().Return("", errors.New("hello world"))
|
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actual, err = p.GenerateIntermediateCSR()
|
||||
require.Error(err)
|
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require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_SetIntermediate(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
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require := require.New(t)
|
||||
|
||||
// Try cleanup with no error
|
||||
m.On("SetIntermediate", "foo", "bar").Once().Return(nil)
|
||||
err := p.SetIntermediate("foo", "bar")
|
||||
require.NoError(err)
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("SetIntermediate", "foo", "bar").Once().Return(errors.New("hello world"))
|
||||
err = p.SetIntermediate("foo", "bar")
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_ActiveIntermediate(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
||||
require := require.New(t)
|
||||
|
||||
// Try cleanup with no error
|
||||
m.On("ActiveIntermediate").Once().Return("foo", nil)
|
||||
actual, err := p.ActiveIntermediate()
|
||||
require.NoError(err)
|
||||
require.Equal(actual, "foo")
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("ActiveIntermediate").Once().Return("", errors.New("hello world"))
|
||||
actual, err = p.ActiveIntermediate()
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_GenerateIntermediate(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
||||
require := require.New(t)
|
||||
|
||||
// Try cleanup with no error
|
||||
m.On("GenerateIntermediate").Once().Return("foo", nil)
|
||||
actual, err := p.GenerateIntermediate()
|
||||
require.NoError(err)
|
||||
require.Equal(actual, "foo")
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("GenerateIntermediate").Once().Return("", errors.New("hello world"))
|
||||
actual, err = p.GenerateIntermediate()
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_Sign(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
||||
require := require.New(t)
|
||||
|
||||
// Create a CSR
|
||||
csrPEM, _ := connect.TestCSR(t, connect.TestSpiffeIDService(t, "web"))
|
||||
block, _ := pem.Decode([]byte(csrPEM))
|
||||
csr, err := x509.ParseCertificateRequest(block.Bytes)
|
||||
require.NoError(err)
|
||||
require.NoError(csr.CheckSignature())
|
||||
|
||||
// No error
|
||||
m.On("Sign", mock.Anything).Once().Return("foo", nil).Run(func(args mock.Arguments) {
|
||||
csr := args.Get(0).(*x509.CertificateRequest)
|
||||
require.NoError(csr.CheckSignature())
|
||||
})
|
||||
actual, err := p.Sign(csr)
|
||||
require.NoError(err)
|
||||
require.Equal(actual, "foo")
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("Sign", mock.Anything).Once().Return("", errors.New("hello world"))
|
||||
actual, err = p.Sign(csr)
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_SignIntermediate(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
||||
require := require.New(t)
|
||||
|
||||
// Create a CSR
|
||||
csrPEM, _ := connect.TestCSR(t, connect.TestSpiffeIDService(t, "web"))
|
||||
block, _ := pem.Decode([]byte(csrPEM))
|
||||
csr, err := x509.ParseCertificateRequest(block.Bytes)
|
||||
require.NoError(err)
|
||||
require.NoError(csr.CheckSignature())
|
||||
|
||||
// No error
|
||||
m.On("SignIntermediate", mock.Anything).Once().Return("foo", nil).Run(func(args mock.Arguments) {
|
||||
csr := args.Get(0).(*x509.CertificateRequest)
|
||||
require.NoError(csr.CheckSignature())
|
||||
})
|
||||
actual, err := p.SignIntermediate(csr)
|
||||
require.NoError(err)
|
||||
require.Equal(actual, "foo")
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("SignIntermediate", mock.Anything).Once().Return("", errors.New("hello world"))
|
||||
actual, err = p.SignIntermediate(csr)
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_CrossSignCA(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
||||
require := require.New(t)
|
||||
|
||||
// Create a CSR
|
||||
root := connect.TestCA(t, nil)
|
||||
block, _ := pem.Decode([]byte(root.RootCert))
|
||||
crt, err := x509.ParseCertificate(block.Bytes)
|
||||
require.NoError(err)
|
||||
|
||||
// No error
|
||||
m.On("CrossSignCA", mock.Anything).Once().Return("foo", nil).Run(func(args mock.Arguments) {
|
||||
actual := args.Get(0).(*x509.Certificate)
|
||||
require.True(crt.Equal(actual))
|
||||
})
|
||||
actual, err := p.CrossSignCA(crt)
|
||||
require.NoError(err)
|
||||
require.Equal(actual, "foo")
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("CrossSignCA", mock.Anything).Once().Return("", errors.New("hello world"))
|
||||
actual, err = p.CrossSignCA(crt)
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
func TestProvider_Cleanup(t *testing.T) {
|
||||
testPlugin(t, func(t *testing.T, m *ca.MockProvider, p ca.Provider) {
|
||||
require := require.New(t)
|
||||
|
||||
// Try cleanup with no error
|
||||
m.On("Cleanup").Once().Return(nil)
|
||||
require.NoError(p.Cleanup())
|
||||
m.AssertExpectations(t)
|
||||
|
||||
// Try with an error
|
||||
m.Mock = mock.Mock{}
|
||||
m.On("Cleanup").Once().Return(errors.New("hello world"))
|
||||
err := p.Cleanup()
|
||||
require.Error(err)
|
||||
require.Contains(err.Error(), "hello")
|
||||
m.AssertExpectations(t)
|
||||
})
|
||||
}
|
||||
|
||||
// testPlugin runs the given test function callback for all supported
|
||||
// transports of the plugin RPC layer.
|
||||
func testPlugin(t *testing.T, f func(t *testing.T, m *ca.MockProvider, actual ca.Provider)) {
|
||||
t.Run("net/rpc", func(t *testing.T) {
|
||||
// Create a mock provider
|
||||
mockP := new(ca.MockProvider)
|
||||
client, _ := plugin.TestPluginRPCConn(t, map[string]plugin.Plugin{
|
||||
Name: &ProviderPlugin{Impl: mockP},
|
||||
}, nil)
|
||||
defer client.Close()
|
||||
|
||||
// Request the provider
|
||||
raw, err := client.Dispense(Name)
|
||||
require.NoError(t, err)
|
||||
provider := raw.(ca.Provider)
|
||||
|
||||
// Call the test function
|
||||
f(t, mockP, provider)
|
||||
})
|
||||
|
||||
t.Run("gRPC", func(t *testing.T) {
|
||||
// Create a mock provider
|
||||
mockP := new(ca.MockProvider)
|
||||
client, _ := plugin.TestPluginGRPCConn(t, map[string]plugin.Plugin{
|
||||
Name: &ProviderPlugin{Impl: mockP},
|
||||
})
|
||||
defer client.Close()
|
||||
|
||||
// Request the provider
|
||||
raw, err := client.Dispense(Name)
|
||||
require.NoError(t, err)
|
||||
provider := raw.(ca.Provider)
|
||||
|
||||
// Call the test function
|
||||
f(t, mockP, provider)
|
||||
})
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,84 @@
|
|||
/* This proto file contains the service and structures for implementing
|
||||
* a Consul CA provider plugin. For clearer documentation on what each
|
||||
* RPC method should do, please refer to the Go interface documentation
|
||||
* for `agent/connect/ca.Provider`.
|
||||
*
|
||||
* After implementing this service, the plugin must also output the proper
|
||||
* format to stdout for the plugin handshake. Please refer to the Consul
|
||||
* documentation for more information.
|
||||
*/
|
||||
|
||||
syntax = "proto3";
|
||||
|
||||
option go_package = "github.com/hashicorp/consul/agent/connect/ca/plugin";
|
||||
|
||||
package plugin;
|
||||
|
||||
service CA {
|
||||
rpc Configure(ConfigureRequest) returns (Empty);
|
||||
rpc GenerateRoot(Empty) returns (Empty);
|
||||
rpc ActiveRoot(Empty) returns (ActiveRootResponse);
|
||||
rpc GenerateIntermediateCSR(Empty) returns (GenerateIntermediateCSRResponse);
|
||||
rpc SetIntermediate(SetIntermediateRequest) returns (Empty);
|
||||
rpc ActiveIntermediate(Empty) returns (ActiveIntermediateResponse);
|
||||
rpc GenerateIntermediate(Empty) returns (GenerateIntermediateResponse);
|
||||
rpc Sign(SignRequest) returns (SignResponse);
|
||||
rpc SignIntermediate(SignIntermediateRequest) returns (SignIntermediateResponse);
|
||||
rpc CrossSignCA(CrossSignCARequest) returns (CrossSignCAResponse);
|
||||
rpc Cleanup(Empty) returns (Empty);
|
||||
}
|
||||
|
||||
message ConfigureRequest {
|
||||
string cluster_id = 1;
|
||||
bool is_root = 2;
|
||||
bytes config = 3; // JSON-encoded structure
|
||||
}
|
||||
|
||||
message SetIntermediateRequest {
|
||||
string intermediate_pem = 1;
|
||||
string root_pem = 2;
|
||||
}
|
||||
|
||||
message SignRequest {
|
||||
bytes csr = 1;
|
||||
}
|
||||
|
||||
message SignIntermediateRequest {
|
||||
bytes csr = 1;
|
||||
}
|
||||
|
||||
message CrossSignCARequest {
|
||||
bytes crt = 1;
|
||||
}
|
||||
|
||||
message ActiveRootResponse {
|
||||
string crt_pem = 1;
|
||||
}
|
||||
|
||||
message GenerateIntermediateCSRResponse {
|
||||
string csr_pem = 1;
|
||||
}
|
||||
|
||||
message ActiveIntermediateResponse {
|
||||
string crt_pem = 1;
|
||||
}
|
||||
|
||||
message GenerateIntermediateResponse {
|
||||
string crt_pem = 1;
|
||||
}
|
||||
|
||||
message SignResponse {
|
||||
string crt_pem = 1;
|
||||
}
|
||||
|
||||
message SignIntermediateResponse {
|
||||
string crt_pem = 1;
|
||||
}
|
||||
|
||||
message CrossSignCAResponse {
|
||||
string crt_pem = 1;
|
||||
}
|
||||
|
||||
// Protobufs doesn't allow no req/resp so in the cases where there are
|
||||
// no arguments we use the Empty message.
|
||||
message Empty {}
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
package plugin
|
||||
|
||||
import (
|
||||
"github.com/hashicorp/consul/agent/connect/ca"
|
||||
"github.com/hashicorp/go-plugin"
|
||||
)
|
||||
|
||||
// Name is the name of the plugin that users of the package should use
|
||||
// with *plugin.Client.Dispense to get the proper plugin instance.
|
||||
const Name = "consul-connect-ca"
|
||||
|
||||
// handshakeConfig is the HandshakeConfig used to configure clients and servers.
|
||||
var handshakeConfig = plugin.HandshakeConfig{
|
||||
// The ProtocolVersion is the version that must match between Consul
|
||||
// and CA plugins. This should be bumped whenever a change happens in
|
||||
// one or the other that makes it so that they can't safely communicate.
|
||||
ProtocolVersion: 1,
|
||||
|
||||
// The magic cookie values should NEVER be changed.
|
||||
MagicCookieKey: "CONSUL_PLUGIN_MAGIC_COOKIE",
|
||||
MagicCookieValue: "f31f63b28fa82a3cdb30a6284cb1e50e3a13b7e60ba105a2c91219da319d216c",
|
||||
}
|
||||
|
||||
// Serve serves a CA plugin. This function never returns and should be the
|
||||
// final function called in the main function of the plugin.
|
||||
func Serve(p ca.Provider) {
|
||||
plugin.Serve(&plugin.ServeConfig{
|
||||
HandshakeConfig: handshakeConfig,
|
||||
Plugins: map[string]plugin.Plugin{
|
||||
Name: &ProviderPlugin{Impl: p},
|
||||
},
|
||||
})
|
||||
}
|
||||
|
|
@ -0,0 +1,210 @@
|
|||
package plugin
|
||||
|
||||
import (
|
||||
"context"
|
||||
"crypto/x509"
|
||||
"encoding/json"
|
||||
|
||||
"github.com/hashicorp/consul/agent/connect/ca"
|
||||
"google.golang.org/grpc"
|
||||
)
|
||||
|
||||
// providerPluginGRPCServer implements the CAServer interface for gRPC.
|
||||
type providerPluginGRPCServer struct {
|
||||
impl ca.Provider
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) Configure(_ context.Context, req *ConfigureRequest) (*Empty, error) {
|
||||
var rawConfig map[string]interface{}
|
||||
if err := json.Unmarshal(req.Config, &rawConfig); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &Empty{}, p.impl.Configure(req.ClusterId, req.IsRoot, rawConfig)
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) GenerateRoot(context.Context, *Empty) (*Empty, error) {
|
||||
return &Empty{}, p.impl.GenerateRoot()
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) ActiveRoot(context.Context, *Empty) (*ActiveRootResponse, error) {
|
||||
pem, err := p.impl.ActiveRoot()
|
||||
return &ActiveRootResponse{CrtPem: pem}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) GenerateIntermediateCSR(context.Context, *Empty) (*GenerateIntermediateCSRResponse, error) {
|
||||
pem, err := p.impl.GenerateIntermediateCSR()
|
||||
return &GenerateIntermediateCSRResponse{CsrPem: pem}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) SetIntermediate(_ context.Context, req *SetIntermediateRequest) (*Empty, error) {
|
||||
return &Empty{}, p.impl.SetIntermediate(req.IntermediatePem, req.RootPem)
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) ActiveIntermediate(context.Context, *Empty) (*ActiveIntermediateResponse, error) {
|
||||
pem, err := p.impl.ActiveIntermediate()
|
||||
return &ActiveIntermediateResponse{CrtPem: pem}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) GenerateIntermediate(context.Context, *Empty) (*GenerateIntermediateResponse, error) {
|
||||
pem, err := p.impl.GenerateIntermediate()
|
||||
return &GenerateIntermediateResponse{CrtPem: pem}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) Sign(_ context.Context, req *SignRequest) (*SignResponse, error) {
|
||||
csr, err := x509.ParseCertificateRequest(req.Csr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
crtPEM, err := p.impl.Sign(csr)
|
||||
return &SignResponse{CrtPem: crtPEM}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) SignIntermediate(_ context.Context, req *SignIntermediateRequest) (*SignIntermediateResponse, error) {
|
||||
csr, err := x509.ParseCertificateRequest(req.Csr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
crtPEM, err := p.impl.SignIntermediate(csr)
|
||||
return &SignIntermediateResponse{CrtPem: crtPEM}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) CrossSignCA(_ context.Context, req *CrossSignCARequest) (*CrossSignCAResponse, error) {
|
||||
crt, err := x509.ParseCertificate(req.Crt)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
crtPEM, err := p.impl.CrossSignCA(crt)
|
||||
return &CrossSignCAResponse{CrtPem: crtPEM}, err
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCServer) Cleanup(context.Context, *Empty) (*Empty, error) {
|
||||
return &Empty{}, p.impl.Cleanup()
|
||||
}
|
||||
|
||||
// providerPluginGRPCClient implements ca.Provider for acting as a client
|
||||
// to a remote CA provider plugin over gRPC.
|
||||
type providerPluginGRPCClient struct {
|
||||
client CAClient
|
||||
clientConn *grpc.ClientConn
|
||||
doneCtx context.Context
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) Configure(
|
||||
clusterId string,
|
||||
isRoot bool,
|
||||
rawConfig map[string]interface{}) error {
|
||||
config, err := json.Marshal(rawConfig)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
_, err = p.client.Configure(p.doneCtx, &ConfigureRequest{
|
||||
ClusterId: clusterId,
|
||||
IsRoot: isRoot,
|
||||
Config: config,
|
||||
})
|
||||
return p.err(err)
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) GenerateRoot() error {
|
||||
_, err := p.client.GenerateRoot(p.doneCtx, &Empty{})
|
||||
return p.err(err)
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) ActiveRoot() (string, error) {
|
||||
resp, err := p.client.ActiveRoot(p.doneCtx, &Empty{})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CrtPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) GenerateIntermediateCSR() (string, error) {
|
||||
resp, err := p.client.GenerateIntermediateCSR(p.doneCtx, &Empty{})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CsrPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) SetIntermediate(intermediatePEM, rootPEM string) error {
|
||||
_, err := p.client.SetIntermediate(p.doneCtx, &SetIntermediateRequest{
|
||||
IntermediatePem: intermediatePEM,
|
||||
RootPem: rootPEM,
|
||||
})
|
||||
return p.err(err)
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) ActiveIntermediate() (string, error) {
|
||||
resp, err := p.client.ActiveIntermediate(p.doneCtx, &Empty{})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CrtPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) GenerateIntermediate() (string, error) {
|
||||
resp, err := p.client.GenerateIntermediate(p.doneCtx, &Empty{})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CrtPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) Sign(csr *x509.CertificateRequest) (string, error) {
|
||||
resp, err := p.client.Sign(p.doneCtx, &SignRequest{
|
||||
Csr: csr.Raw,
|
||||
})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CrtPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) SignIntermediate(csr *x509.CertificateRequest) (string, error) {
|
||||
resp, err := p.client.SignIntermediate(p.doneCtx, &SignIntermediateRequest{
|
||||
Csr: csr.Raw,
|
||||
})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CrtPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) CrossSignCA(crt *x509.Certificate) (string, error) {
|
||||
resp, err := p.client.CrossSignCA(p.doneCtx, &CrossSignCARequest{
|
||||
Crt: crt.Raw,
|
||||
})
|
||||
if err != nil {
|
||||
return "", p.err(err)
|
||||
}
|
||||
|
||||
return resp.CrtPem, nil
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) Cleanup() error {
|
||||
_, err := p.client.Cleanup(p.doneCtx, &Empty{})
|
||||
return p.err(err)
|
||||
}
|
||||
|
||||
func (p *providerPluginGRPCClient) err(err error) error {
|
||||
if err := p.doneCtx.Err(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
// Verification
|
||||
var _ CAServer = &providerPluginGRPCServer{}
|
||||
var _ ca.Provider = &providerPluginGRPCClient{}
|
||||
|
|
@ -0,0 +1,185 @@
|
|||
package plugin
|
||||
|
||||
import (
|
||||
"crypto/x509"
|
||||
"net/rpc"
|
||||
|
||||
"github.com/hashicorp/consul/agent/connect/ca"
|
||||
)
|
||||
|
||||
// providerPluginRPCServer implements a net/rpc backed transport for
|
||||
// an underlying implementation of a ca.Provider. The server side is the
|
||||
// plugin binary itself.
|
||||
type providerPluginRPCServer struct {
|
||||
impl ca.Provider
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) Configure(args *ConfigureRPCRequest, _ *struct{}) error {
|
||||
return p.impl.Configure(args.ClusterId, args.IsRoot, args.RawConfig)
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) GenerateRoot(struct{}, *struct{}) error {
|
||||
return p.impl.GenerateRoot()
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) ActiveRoot(_ struct{}, resp *ActiveRootResponse) error {
|
||||
var err error
|
||||
resp.CrtPem, err = p.impl.ActiveRoot()
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) GenerateIntermediateCSR(_ struct{}, resp *GenerateIntermediateCSRResponse) error {
|
||||
var err error
|
||||
resp.CsrPem, err = p.impl.GenerateIntermediateCSR()
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) SetIntermediate(args *SetIntermediateRPCRequest, _ *struct{}) error {
|
||||
return p.impl.SetIntermediate(args.IntermediatePEM, args.RootPEM)
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) ActiveIntermediate(_ struct{}, resp *ActiveIntermediateResponse) error {
|
||||
var err error
|
||||
resp.CrtPem, err = p.impl.ActiveIntermediate()
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) GenerateIntermediate(_ struct{}, resp *GenerateIntermediateResponse) error {
|
||||
var err error
|
||||
resp.CrtPem, err = p.impl.GenerateIntermediate()
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) Sign(args *SignRequest, resp *SignResponse) error {
|
||||
csr, err := x509.ParseCertificateRequest(args.Csr)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
resp.CrtPem, err = p.impl.Sign(csr)
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) SignIntermediate(args *SignIntermediateRequest, resp *SignIntermediateResponse) error {
|
||||
csr, err := x509.ParseCertificateRequest(args.Csr)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
resp.CrtPem, err = p.impl.SignIntermediate(csr)
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) CrossSignCA(args *CrossSignCARequest, resp *CrossSignCAResponse) error {
|
||||
crt, err := x509.ParseCertificate(args.Crt)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
resp.CrtPem, err = p.impl.CrossSignCA(crt)
|
||||
return err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCServer) Cleanup(struct{}, *struct{}) error {
|
||||
return p.impl.Cleanup()
|
||||
}
|
||||
|
||||
// providerPluginRPCClient implements a net/rpc backed transport for
|
||||
// an underlying implementation of a ca.Provider. The client side is the
|
||||
// software calling into the plugin binary over rpc.
|
||||
//
|
||||
// This implements ca.Provider.
|
||||
type providerPluginRPCClient struct {
|
||||
client *rpc.Client
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) Configure(
|
||||
clusterId string,
|
||||
isRoot bool,
|
||||
rawConfig map[string]interface{}) error {
|
||||
return p.client.Call("Plugin.Configure", &ConfigureRPCRequest{
|
||||
ClusterId: clusterId,
|
||||
IsRoot: isRoot,
|
||||
RawConfig: rawConfig,
|
||||
}, &struct{}{})
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) GenerateRoot() error {
|
||||
return p.client.Call("Plugin.GenerateRoot", struct{}{}, &struct{}{})
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) ActiveRoot() (string, error) {
|
||||
var resp ActiveRootResponse
|
||||
err := p.client.Call("Plugin.ActiveRoot", struct{}{}, &resp)
|
||||
return resp.CrtPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) GenerateIntermediateCSR() (string, error) {
|
||||
var resp GenerateIntermediateCSRResponse
|
||||
err := p.client.Call("Plugin.GenerateIntermediateCSR", struct{}{}, &resp)
|
||||
return resp.CsrPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) SetIntermediate(intermediatePEM, rootPEM string) error {
|
||||
return p.client.Call("Plugin.SetIntermediate", &SetIntermediateRPCRequest{
|
||||
IntermediatePEM: intermediatePEM,
|
||||
RootPEM: rootPEM,
|
||||
}, &struct{}{})
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) ActiveIntermediate() (string, error) {
|
||||
var resp ActiveIntermediateResponse
|
||||
err := p.client.Call("Plugin.ActiveIntermediate", struct{}{}, &resp)
|
||||
return resp.CrtPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) GenerateIntermediate() (string, error) {
|
||||
var resp GenerateIntermediateResponse
|
||||
err := p.client.Call("Plugin.GenerateIntermediate", struct{}{}, &resp)
|
||||
return resp.CrtPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) Sign(csr *x509.CertificateRequest) (string, error) {
|
||||
var resp SignResponse
|
||||
err := p.client.Call("Plugin.Sign", &SignRequest{
|
||||
Csr: csr.Raw,
|
||||
}, &resp)
|
||||
return resp.CrtPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) SignIntermediate(csr *x509.CertificateRequest) (string, error) {
|
||||
var resp SignIntermediateResponse
|
||||
err := p.client.Call("Plugin.SignIntermediate", &SignIntermediateRequest{
|
||||
Csr: csr.Raw,
|
||||
}, &resp)
|
||||
return resp.CrtPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) CrossSignCA(crt *x509.Certificate) (string, error) {
|
||||
var resp CrossSignCAResponse
|
||||
err := p.client.Call("Plugin.CrossSignCA", &CrossSignCARequest{
|
||||
Crt: crt.Raw,
|
||||
}, &resp)
|
||||
return resp.CrtPem, err
|
||||
}
|
||||
|
||||
func (p *providerPluginRPCClient) Cleanup() error {
|
||||
return p.client.Call("Plugin.Cleanup", struct{}{}, &struct{}{})
|
||||
}
|
||||
|
||||
// Verification
|
||||
var _ ca.Provider = &providerPluginRPCClient{}
|
||||
|
||||
//-------------------------------------------------------------------
|
||||
// Structs for net/rpc request and response
|
||||
|
||||
type ConfigureRPCRequest struct {
|
||||
ClusterId string
|
||||
IsRoot bool
|
||||
RawConfig map[string]interface{}
|
||||
}
|
||||
|
||||
type SetIntermediateRPCRequest struct {
|
||||
IntermediatePEM string
|
||||
RootPEM string
|
||||
}
|
||||
|
|
@ -4,6 +4,8 @@ import (
|
|||
"crypto/x509"
|
||||
)
|
||||
|
||||
//go:generate mockery -name Provider -inpkg
|
||||
|
||||
// Provider is the interface for Consul to interact with
|
||||
// an external CA that provides leaf certificate signing for
|
||||
// given SpiffeIDServices.
|
||||
|
|
|
|||
Loading…
Reference in New Issue