Configure Single-Sign-On for the web server

cmd/runmqserver/post_init.go

@@ -20,18 +20,26 @@ import (
 )
 
 // postInit is run after /var/mqm is set up
-// This version of postInit is only included as part of the MQ Advanced for Developers build
 func postInit(name string) error {
 	disable := os.Getenv("MQ_DISABLE_WEB_CONSOLE")
 	if disable != "true" && disable != "1" {
+
+		// Configure Single-Sign-On for the web server (if enabled)
+		enableSSO := os.Getenv("MQ_ENABLE_SSO")
+		if enableSSO == "true" || enableSSO == "1" {
+			err := configureSSO()
+			if err != nil {
+				return err
+			}
+		}
+
 		// Configure the web server (if installed)
 		err := configureWebServer()
 		if err != nil {
 			return err
 		}
 		// Start the web server, in the background (if installed)
-		// WARNING: No error handling or health checking available for the web server,
+		// WARNING: No error handling or health checking available for the web server
-		// which is why it's limited to use with MQ Advanced for Developers only
 		go func() {
 			startWebServer()
 		}()

cmd/runmqserver/webserver.go

@@ -23,9 +23,12 @@ import (
 	"os/user"
 	"path/filepath"
 	"strconv"
+	"strings"
 	"syscall"
 
 	"github.com/ibm-messaging/mq-container/internal/command"
+	"github.com/ibm-messaging/mq-container/internal/keystore"
+	"github.com/ibm-messaging/mq-container/internal/mqtemplate"
 )
 
 func startWebServer() error {
@@ -88,6 +91,101 @@ func CopyFile(src, dest string) error {
 	return err
 }
 
+func configureSSO() error {
+
+	// Ensure all required environment variables are set for SSO
+	requiredEnvVars := []string{
+		"MQ_WEB_ADMIN_USERS",
+		"MQ_OIDC_CLIENT_ID",
+		"MQ_OIDC_CLIENT_SECRET",
+		"MQ_OIDC_AUTHORIZATION_ENDPOINT",
+		"MQ_OIDC_TOKEN_ENDPOINT",
+		"MQ_OIDC_JWK_ENDPOINT",
+		"MQ_OIDC_ISSUER_IDENTIFIER",
+		"MQ_OIDC_CERTIFICATE",
+	}
+	for _, envVar := range requiredEnvVars {
+		if len(os.Getenv(envVar)) == 0 {
+			return fmt.Errorf("%v must be set when MQ_ENABLE_SSO=true", envVar)
+		}
+	}
+
+	// Check mqweb directory exists
+	const mqwebDir string = "/etc/mqm/web/installations/Installation1/servers/mqweb"
+	_, err := os.Stat(mqwebDir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+
+	// Process SSO template for generating file mqwebuser.xml
+	adminUsers := strings.Split(os.Getenv("MQ_WEB_ADMIN_USERS"), ",")
+	err = mqtemplate.ProcessTemplateFile(mqwebDir+"/mqwebuser.xml.tpl", mqwebDir+"/mqwebuser.xml", map[string][]string{"AdminUser": adminUsers}, log)
+	if err != nil {
+		return err
+	}
+
+	// Configure SSO TLS
+	return configureSSO_TLS()
+}
+
+func configureSSO_TLS() error {
+
+	// Create tls directory
+	dir := "/run/tls"
+	_, err := os.Stat(dir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = os.MkdirAll(dir, 0770)
+			if err != nil {
+				return err
+			}
+			mqmUID, mqmGID, err := command.LookupMQM()
+			if err != nil {
+				log.Error(err)
+				return err
+			}
+			err = os.Chown(dir, mqmUID, mqmGID)
+			if err != nil {
+				log.Error(err)
+				return err
+			}
+		} else {
+			return err
+		}
+	}
+
+	// Setup key store & trust store
+	ks := keystore.NewJKSKeyStore(filepath.Join(dir, "key.jks"), "password")
+	ts := keystore.NewJKSKeyStore(filepath.Join(dir, "trust.jks"), "password")
+
+	log.Debug("Creating key store")
+	err = ks.Create(log)
+	if err != nil {
+		return err
+	}
+	log.Debug("Creating trust store")
+	err = ts.Create(log)
+	if err != nil {
+		return err
+	}
+	log.Debug("Creating self-signed certificate in key store")
+	err = ks.CreateSelfSignedCertificate("default", "CN=IBMMQWeb,O=IBM,OU=Platform,C=GB")
+	if err != nil {
+		return err
+	}
+	log.Debug("Importing self-signed certificate into trust store")
+	err = ts.Import(ks.Filename, ks.Password)
+	if err != nil {
+		return err
+	}
+	log.Debug("Adding OIDC CA certificate to trust store")
+	err = ts.Add(os.Getenv("MQ_OIDC_CERTIFICATE"), "OIDC")
+	return err
+}
+
 func configureWebServer() error {
 	_, err := os.Stat("/opt/mqm/bin/strmqweb")
 	if err != nil {

internal/keystore/keystore.go

@@ -150,6 +150,24 @@ func (ks *KeyStore) Import(inputFile, password string) error {
 	return nil
 }
 
+// CreateSelfSignedCertificate creates a self-signed certificate in the keystore
+func (ks *KeyStore) CreateSelfSignedCertificate(label, dn string) error {
+	out, _, err := command.Run(ks.command, "-cert", "-create", "-db", ks.Filename, "-pw", ks.Password, "-label", label, "-dn", dn)
+	if err != nil {
+		return fmt.Errorf("error running \"%v -cert -create\": %v %s", ks.command, err, out)
+	}
+	return nil
+}
+
+// Add adds a CA certificate to the keystore
+func (ks *KeyStore) Add(inputFile, label string) error {
+	out, _, err := command.Run(ks.command, "-cert", "-add", "-db", ks.Filename, "-type", ks.keyStoreType, "-pw", ks.Password, "-file", inputFile, "-label", label)
+	if err != nil {
+		return fmt.Errorf("error running \"%v -cert -add\": %v %s", ks.command, err, out)
+	}
+	return nil
+}
+
 // GetCertificateLabels returns the labels of all certificates in the key store
 func (ks *KeyStore) GetCertificateLabels() ([]string, error) {
 	out, _, err := command.Run(ks.command, "-cert", "-list", "-type", ks.keyStoreType, "-db", ks.Filename, "-pw", ks.Password)

web/installations/Installation1/servers/mqweb/mqwebuser.xml.tpl

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<server>
+    <featureManager>
+        <feature>openidConnectClient-1.0</feature>
+        <feature>ssl-1.0</feature>
+    </featureManager>
+    <enterpriseApplication id="com.ibm.mq.console">
+        <application-bnd>
+            <security-role name="MQWebAdmin">
+                <group name="MQWebUI" realm="defaultRealm"/>
+                {{- range $index, $element := .AdminUser}}
+                <user name="admin{{$index}}" access-id="{{.}}"/>
+                {{- end}}
+            </security-role>
+        </application-bnd>
+    </enterpriseApplication>
+    <enterpriseApplication id="com.ibm.mq.rest">
+        <application-bnd>
+            <security-role name="MQWebAdmin">
+                <group name="MQWebUI" realm="defaultRealm"/>
+            </security-role>
+            <security-role name="MQWebUser">
+                <group name="MQWebMessaging" realm="defaultRealm"/>
+            </security-role>
+        </application-bnd>
+    </enterpriseApplication>
+    <openidConnectClient id="mqclient"
+        clientId="${env.MQ_OIDC_CLIENT_ID}"
+        clientSecret="${env.MQ_OIDC_CLIENT_SECRET}"
+        authorizationEndpointUrl="${env.MQ_OIDC_AUTHORIZATION_ENDPOINT}"
+        tokenEndpointUrl="${env.MQ_OIDC_TOKEN_ENDPOINT}"
+        scope="openid profile email"
+        inboundPropagation="supported"
+        jwkEndpointUrl="${env.MQ_OIDC_JWK_ENDPOINT}"
+        signatureAlgorithm="RS256"
+        issuerIdentifier="${env.MQ_OIDC_ISSUER_IDENTIFIER}">
+    </openidConnectClient>
+    <variable name="httpHost" value="*"/>
+    <keyStore id="MQWebKeyStore" location="/run/tls/key.jks" type="JKS" password="password"/>
+    <keyStore id="MQWebTrustStore" location="/run/tls/trust.jks" type="JKS" password="password"/>
+    <ssl id="thisSSLConfig" clientAuthenticationSupported="true" keyStoreRef="MQWebKeyStore" trustStoreRef="MQWebTrustStore" sslProtocol="TLSv1.2" serverKeyAlias="default"/>
+    <sslDefault sslRef="thisSSLConfig"/>
+    <httpDispatcher enableWelcomePage="false" appOrContextRootMissingMessage='&lt;script&gt;document.location.href="/ibmmq/console";&lt;/script&gt;' />
+</server>