Add support for -ca-path option in the connect envoy command (#8606)

* Add support for -ca-path option in the connect envoy command
* Adding changelog entry

.changelog/8606.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+connect: `connect envoy` command now respects the `-ca-path` flag
+```

command/connect/envoy/envoy.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"os"
 	"os/exec"
@@ -20,6 +19,7 @@ import (
 	proxyCmd "github.com/hashicorp/consul/command/connect/proxy"
 	"github.com/hashicorp/consul/command/flags"
 	"github.com/hashicorp/consul/ipaddr"
+	"github.com/hashicorp/consul/tlsutil"
 )
 
 func New(ui cli.Ui) *cmd {
@@ -443,13 +443,11 @@ func (c *cmd) templateArgs() (*BootstrapTplArgs, error) {
 	}
 
 	var caPEM string
-	if httpCfg.TLSConfig.CAFile != "" {
+	pems, err := tlsutil.LoadCAs(httpCfg.TLSConfig.CAFile, httpCfg.TLSConfig.CAPath)
-		content, err := ioutil.ReadFile(httpCfg.TLSConfig.CAFile)
+	if err != nil {
-		if err != nil {
+		return nil, err
-			return nil, fmt.Errorf("Failed to read CA file: %s", err)
-		}
-		caPEM = strings.Replace(string(content), "\n", "\\n", -1)
 	}
+	caPEM = strings.Replace(strings.Join(pems, ""), "\n", "\\n", -1)
 
 	return &BootstrapTplArgs{
 		GRPC:                  grpcAddr,

command/connect/envoy/envoy_test.go

@@ -370,6 +370,46 @@ func TestGenerateConfig(t *testing.T) {
 				LocalAgentClusterName: xds.LocalAgentClusterName,
 			},
 		},
+		{
+			Name:  "missing-ca-path",
+			Flags: []string{"-proxy-id", "test-proxy", "-ca-path", "some/path"},
+			WantArgs: BootstrapTplArgs{
+				EnvoyVersion: defaultEnvoyVersion,
+				ProxyCluster: "test-proxy",
+				ProxyID:      "test-proxy",
+				// Should resolve IP, note this might not resolve the same way
+				// everywhere which might make this test brittle but not sure what else
+				// to do.
+				GRPC: GRPC{
+					AgentAddress: "127.0.0.1",
+					AgentPort:    "8502",
+				},
+			},
+			WantErr: "lstat some/path: no such file or directory",
+		},
+		{
+			Name:  "existing-ca-path",
+			Flags: []string{"-proxy-id", "test-proxy", "-ca-path", "../../../test/ca_path/"},
+			Env:   []string{"CONSUL_HTTP_SSL=1"},
+			WantArgs: BootstrapTplArgs{
+				EnvoyVersion: defaultEnvoyVersion,
+				ProxyCluster: "test-proxy",
+				ProxyID:      "test-proxy",
+				// Should resolve IP, note this might not resolve the same way
+				// everywhere which might make this test brittle but not sure what else
+				// to do.
+				GRPC: GRPC{
+					AgentAddress: "127.0.0.1",
+					AgentPort:    "8502",
+					AgentTLS:     true,
+				},
+				AgentCAPEM:            `-----BEGIN CERTIFICATE-----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\neVmy+z3U3MecP63X6oSPXekqSyZFuegXpNNuHkjNoL4ep2ix\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nwlW975rYa1ZqEdA=\n-----END CERTIFICATE-----\n`,
+				AdminAccessLogPath:    "/dev/null",
+				AdminBindAddress:      "127.0.0.1",
+				AdminBindPort:         "19000",
+				LocalAgentClusterName: xds.LocalAgentClusterName,
+			},
+		},
 		{
 			Name:  "custom-bootstrap",
 			Flags: []string{"-proxy-id", "test-proxy"},

command/connect/envoy/testdata/existing-ca-path.golden

@@ -0,0 +1,125 @@
+{
+  "admin": {
+    "access_log_path": "/dev/null",
+    "address": {
+      "socket_address": {
+        "address": "127.0.0.1",
+        "port_value": 19000
+      }
+    }
+  },
+  "node": {
+    "cluster": "test-proxy",
+    "id": "test-proxy",
+    "metadata": {
+      "namespace": "default",
+      "envoy_version": "1.15.0"
+    }
+  },
+  "static_resources": {
+    "clusters": [
+      {
+        "name": "local_agent",
+        "connect_timeout": "1s",
+        "type": "STATIC",
+        "tls_context": {
+          "common_tls_context": {
+            "validation_context": {
+              "trusted_ca": {
+                "inline_string": "-----BEGIN CERTIFICATE-----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\neVmy+z3U3MecP63X6oSPXekqSyZFuegXpNNuHkjNoL4ep2ix\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----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\nwlW975rYa1ZqEdA=\n-----END CERTIFICATE-----\n"
+              }
+            }
+          }
+        },
+        "http2_protocol_options": {},
+        "hosts": [
+          {
+            "socket_address": {
+              "address": "127.0.0.1",
+              "port_value": 8502
+            }
+          }
+        ]
+      }
+    ]
+  },
+  "stats_config": {
+    "stats_tags": [
+      {
+        "regex": "^cluster\\.((?:([^.]+)~)?(?:[^.]+\\.)?[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.custom_hash"
+      },
+      {
+        "regex": "^cluster\\.((?:[^.]+~)?(?:([^.]+)\\.)?[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.service_subset"
+      },
+      {
+        "regex": "^cluster\\.((?:[^.]+~)?(?:[^.]+\\.)?([^.]+)\\.[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.service"
+      },
+      {
+        "regex": "^cluster\\.((?:[^.]+~)?(?:[^.]+\\.)?[^.]+\\.([^.]+)\\.[^.]+\\.[^.]+\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.namespace"
+      },
+      {
+        "regex": "^cluster\\.((?:[^.]+~)?(?:[^.]+\\.)?[^.]+\\.[^.]+\\.([^.]+)\\.[^.]+\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.datacenter"
+      },
+      {
+        "regex": "^cluster\\.((?:[^.]+~)?(?:[^.]+\\.)?[^.]+\\.[^.]+\\.[^.]+\\.([^.]+)\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.routing_type"
+      },
+      {
+        "regex": "^cluster\\.((?:[^.]+~)?(?:[^.]+\\.)?[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.([^.]+)\\.consul\\.)",
+        "tag_name": "consul.trust_domain"
+      },
+      {
+        "regex": "^cluster\\.(((?:[^.]+~)?(?:[^.]+\\.)?[^.]+\\.[^.]+\\.[^.]+)\\.[^.]+\\.[^.]+\\.consul\\.)",
+        "tag_name": "consul.target"
+      },
+      {
+        "regex": "^cluster\\.(((?:[^.]+~)?(?:[^.]+\\.)?[^.]+\\.[^.]+\\.[^.]+\\.[^.]+\\.[^.]+)\\.consul\\.)",
+        "tag_name": "consul.full_target"
+      },
+      {
+        "tag_name": "local_cluster",
+        "fixed_value": "test-proxy"
+      }
+    ],
+    "use_all_default_tags": true
+  },
+  "dynamic_resources": {
+    "lds_config": {
+      "ads": {}
+    },
+    "cds_config": {
+      "ads": {}
+    },
+    "ads_config": {
+      "api_type": "GRPC",
+      "grpc_services": {
+        "initial_metadata": [
+          {
+            "key": "x-consul-token",
+            "value": ""
+          }
+        ],
+        "envoy_grpc": {
+          "cluster_name": "local_agent"
+        }
+      }
+    }
+  },
+  "layered_runtime": {
+    "layers": [
+      {
+        "name": "static_layer",
+        "static_layer": {
+          "envoy.deprecated_features:envoy.api.v2.Cluster.tls_context": true,
+          "envoy.deprecated_features:envoy.config.trace.v2.ZipkinConfig.HTTP_JSON_V1": true,
+          "envoy.deprecated_features:envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager.Tracing.operation_name": true
+        }
+      }
+    ]
+  }
+}

tlsutil/config.go

@@ -238,7 +238,7 @@ func (c *Configurator) Update(config Config) error {
 	if err != nil {
 		return err
 	}
-	pems, err := loadCAs(config.CAFile, config.CAPath)
+	pems, err := LoadCAs(config.CAFile, config.CAPath)
 	if err != nil {
 		return err
 	}
@@ -420,7 +420,7 @@ func loadKeyPair(certFile, keyFile string) (*tls.Certificate, error) {
 	return &cert, nil
 }
 
-func loadCAs(caFile, caPath string) ([]string, error) {
+func LoadCAs(caFile, caPath string) ([]string, error) {
 	if caFile == "" && caPath == "" {
 		return nil, nil
 	}

tlsutil/config_test.go

@@ -519,7 +519,7 @@ func TestConfigurator_ErrorPropagation(t *testing.T) {
 		if !v.excludeCheck {
 			cert, err := v.config.KeyPair()
 			require.NoError(t, err, info)
-			pems, err := loadCAs(v.config.CAFile, v.config.CAPath)
+			pems, err := LoadCAs(v.config.CAFile, v.config.CAPath)
 			require.NoError(t, err, info)
 			pool, err := pool(pems)
 			require.NoError(t, err, info)
@@ -562,7 +562,7 @@ func TestConfigurator_CommonTLSConfigServerNameNodeName(t *testing.T) {
 	}
 }
 
-func TestConfigurator_loadCAs(t *testing.T) {
+func TestConfigurator_LoadCAs(t *testing.T) {
 	type variant struct {
 		cafile, capath string
 		shouldErr      bool
@@ -579,7 +579,7 @@ func TestConfigurator_loadCAs(t *testing.T) {
 		{"../test/ca/root.cer", "../test/ca_path", false, false, 1},
 	}
 	for i, v := range variants {
-		pems, err1 := loadCAs(v.cafile, v.capath)
+		pems, err1 := LoadCAs(v.cafile, v.capath)
 		pool, err2 := pool(pems)
 		info := fmt.Sprintf("case %d", i)
 		if v.shouldErr {