Add GrpcSecurity

2025-01-21 12:12:04 +00:00
parent aa809aaf8a
commit aa8d680c3f
23 changed files with 1528 additions and 0 deletions
--- a/samples/grpc-secure/README.md
+++ b/samples/grpc-secure/README.md
@@ -0,0 +1,70 @@
+# Spring Boot gRPC Sample
+
+This project is a copy one of the samples from the [gRPC Spring Boot Starter](https://github.com/yidongnan/grpc-spring-boot-starter/blob/master/examples/local-grpc-server/build.gradle). Build and run any way you like to run Spring Boot. E.g:
+
+```
+$ ./mvnw spring-boot:run
+...
+  .   ____          _            __ _ _
+ /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
+( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
+ \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
+  '  |____| .__|_| |_|_| |_\__, | / / / /
+ =========|_|==============|___/=/_/_/_/
+ :: Spring Boot ::                (v3.0.0)
+
+2022-12-08T05:32:24.934-08:00  INFO 551632 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication using Java 17.0.5 with PID 551632 (/home/dsyer/dev/scratch/demo/target/classes started by dsyer in /home/dsyer/dev/scratch/demo)
+2022-12-08T05:32:24.938-08:00  INFO 551632 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to 1 default profile: "default"
+2022-12-08T05:32:25.377-08:00  WARN 551632 --- [           main] ocalVariableTableParameterNameDiscoverer : Using deprecated '-debug' fallback for parameter name resolution. Compile the affected code with '-parameters' instead or avoid its introspection: net.devh.boot.grpc.server.autoconfigure.GrpcHealthServiceAutoConfiguration
+2022-12-08T05:32:25.416-08:00  WARN 551632 --- [           main] ocalVariableTableParameterNameDiscoverer : Using deprecated '-debug' fallback for parameter name resolution. Compile the affected code with '-parameters' instead or avoid its introspection: net.devh.boot.grpc.server.autoconfigure.GrpcServerAutoConfiguration
+2022-12-08T05:32:25.425-08:00  WARN 551632 --- [           main] ocalVariableTableParameterNameDiscoverer : Using deprecated '-debug' fallback for parameter name resolution. Compile the affected code with '-parameters' instead or avoid its introspection: net.devh.boot.grpc.server.autoconfigure.GrpcServerFactoryAutoConfiguration
+2022-12-08T05:32:25.427-08:00  INFO 551632 --- [           main] g.s.a.GrpcServerFactoryAutoConfiguration : Detected grpc-netty: Creating NettyGrpcServerFactory
+2022-12-08T05:32:25.712-08:00  INFO 551632 --- [           main] n.d.b.g.s.s.AbstractGrpcServerFactory    : Registered gRPC service: Simple, bean: grpcServerService, class: com.example.demo.GrpcServerService
+2022-12-08T05:32:25.712-08:00  INFO 551632 --- [           main] n.d.b.g.s.s.AbstractGrpcServerFactory    : Registered gRPC service: grpc.health.v1.Health, bean: grpcHealthService, class: io.grpc.protobuf.services.HealthServiceImpl
+2022-12-08T05:32:25.712-08:00  INFO 551632 --- [           main] n.d.b.g.s.s.AbstractGrpcServerFactory    : Registered gRPC service: grpc.reflection.v1alpha.ServerReflection, bean: protoReflectionService, class: io.grpc.protobuf.services.ProtoReflectionService
+2022-12-08T05:32:25.820-08:00  INFO 551632 --- [           main] n.d.b.g.s.s.GrpcServerLifecycle          : gRPC Server started, listening on address: *, port: 9090
+2022-12-08T05:32:25.831-08:00  INFO 551632 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 1.264 seconds (process running for 1.623)
+```
+
+The server starts by default on port 9090. Test with [gRPCurl](https://github.com/fullstorydev/grpcurl).  There is a B/S insecure channel that lets you authenticate by asserting in a header that you are a user:
+
+```
+$ grpcurl -H "X-User: user" -d '{"name":"Hi"}' -plaintext localhost:9090 Simple.SayHello
+{
+  "message": "Hello ==\u003e Hi"
+}
+```
+
+There is also an HTTP Basic authentication channel that requires a username and password (the user's password is the same as the username):
+
+```
+$ grpcurl -H "Authorization: Basic $(echo -n user:user | base64)" -d '{"name":"Hi"}' -plaintext localhost:9090 Simple.SayHello
+{
+  "message": "Hello ==\u003e Hi"
+}
+```
+
+## Native Image
+
+The app compiles to a native image if the JVM is GraalVM:
+
+```
+$ ./mvnw -Pnative native:compile
+$ ./target/demo
+  .   ____          _            __ _ _
+ /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
+( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
+ \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
+  '  |____| .__|_| |_|_| |_\__, | / / / /
+ =========|_|==============|___/=/_/_/_/
+ :: Spring Boot ::                (v3.0.0)
+
+2022-12-08T05:36:54.365-08:00  INFO 554359 --- [           main] com.example.demo.DemoApplication         : Starting AOT-processed DemoApplication using Java 17.0.5 with PID 554359 (/home/dsyer/dev/scratch/demo/target/demo started by dsyer in /home/dsyer/dev/scratch/demo)
+2022-12-08T05:36:54.366-08:00  INFO 554359 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to 1 default profile: "default"
+2022-12-08T05:36:54.377-08:00  INFO 554359 --- [           main] g.s.a.GrpcServerFactoryAutoConfiguration : Detected grpc-netty: Creating NettyGrpcServerFactory
+2022-12-08T05:36:54.392-08:00  INFO 554359 --- [           main] n.d.b.g.s.s.AbstractGrpcServerFactory    : Registered gRPC service: Simple, bean: grpcServerService, class: com.example.demo.GrpcServerService
+2022-12-08T05:36:54.392-08:00  INFO 554359 --- [           main] n.d.b.g.s.s.AbstractGrpcServerFactory    : Registered gRPC service: grpc.health.v1.Health, bean: grpcHealthService, class: io.grpc.protobuf.services.HealthServiceImpl
+2022-12-08T05:36:54.392-08:00  INFO 554359 --- [           main] n.d.b.g.s.s.AbstractGrpcServerFactory    : Registered gRPC service: grpc.reflection.v1alpha.ServerReflection, bean: protoReflectionService, class: io.grpc.protobuf.services.ProtoReflectionService
+2022-12-08T05:36:54.396-08:00  INFO 554359 --- [           main] n.d.b.g.s.s.GrpcServerLifecycle          : gRPC Server started, listening on address: *, port: 9090
+2022-12-08T05:36:54.396-08:00  INFO 554359 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 0.046 seconds (process running for 0.052)
+```
--- a/samples/grpc-secure/build.gradle
+++ b/samples/grpc-secure/build.gradle
@@ -0,0 +1,60 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.4.0'
+	id 'io.spring.dependency-management' version '1.1.6'
+	id 'org.graalvm.buildtools.native' version '0.10.3'
+	id 'com.google.protobuf' version '0.9.4'
+}
+
+group = 'com.example'
+version = '0.3.0-SNAPSHOT'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(17)
+	}
+}
+
+repositories {
+	mavenLocal()
+	mavenCentral()
+	maven { url 'https://repo.spring.io/milestone' }
+	maven { url 'https://repo.spring.io/snapshot' }
+}
+
+dependencyManagement {
+	imports {
+		mavenBom 'org.springframework.grpc:spring-grpc-dependencies:0.3.0-SNAPSHOT'
+	}
+}
+
+dependencies {
+	implementation 'org.springframework.grpc:spring-grpc-spring-boot-starter'
+	implementation 'org.springframework.boot:spring-boot-starter-security'
+	implementation 'io.grpc:grpc-services'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.grpc:spring-grpc-test'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}
+
+protobuf {
+    protoc {
+        artifact = "com.google.protobuf:protoc:${dependencyManagement.importedProperties['protobuf-java.version']}"
+    }
+    plugins {
+        grpc {
+            artifact = "io.grpc:protoc-gen-grpc-java:${dependencyManagement.importedProperties['grpc.version']}"
+        }
+    }
+    generateProtoTasks {
+        all()*.plugins {
+            grpc {
+				option 'jakarta_omit'
+			}
+		}
+    }
+}
--- a/samples/grpc-secure/gradle/wrapper/gradle-wrapper.jar
+++ b/samples/grpc-secure/gradle/wrapper/gradle-wrapper.jar
--- a/samples/grpc-secure/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/grpc-secure/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/samples/grpc-secure/gradlew
+++ b/samples/grpc-secure/gradlew
@@ -0,0 +1,252 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/samples/grpc-secure/gradlew.bat
+++ b/samples/grpc-secure/gradlew.bat
@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/samples/grpc-secure/pom.xml
+++ b/samples/grpc-secure/pom.xml
@@ -0,0 +1,182 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.4.0</version>
+		<relativePath /> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>org.springframework.grpc</groupId>
+	<artifactId>grpc-secure-sample</artifactId>
+	<version>0.3.0-SNAPSHOT</version>
+	<name>Spring gRPC Server Sample</name>
+	<description>Demo project for Spring gRPC</description>
+	<url />
+	<licenses>
+		<license />
+	</licenses>
+	<developers>
+		<developer />
+	</developers>
+	<scm>
+		<connection />
+		<developerConnection />
+		<tag />
+		<url />
+	</scm>
+	<properties>
+		<java.version>17</java.version>
+		<spring-javaformat-maven-plugin.version>0.0.39</spring-javaformat-maven-plugin.version>
+		<protobuf-java.version>3.25.5</protobuf-java.version>
+		<grpc.version>1.63.2</grpc.version>
+	</properties>
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.grpc</groupId>
+				<artifactId>spring-grpc-dependencies</artifactId>
+				<version>0.3.0-SNAPSHOT</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.grpc</groupId>
+			<artifactId>spring-grpc-spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-security</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>io.grpc</groupId>
+			<artifactId>grpc-services</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>io.projectreactor.netty</groupId>
+			<artifactId>reactor-netty-core</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.grpc</groupId>
+			<artifactId>spring-grpc-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<extensions>
+			<extension>
+				<groupId>kr.motd.maven</groupId>
+				<artifactId>os-maven-plugin</artifactId>
+				<version>1.7.1</version>
+			</extension>
+		</extensions>
+		<plugins>
+			<plugin>
+				<groupId>org.graalvm.buildtools</groupId>
+				<artifactId>native-maven-plugin</artifactId>
+				<configuration>
+					<buildArgs>
+						<buildArg>--verbose</buildArg>
+					</buildArgs>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-deploy-plugin</artifactId>
+				<configuration>
+					<skip>true</skip>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>io.spring.javaformat</groupId>
+				<artifactId>spring-javaformat-maven-plugin</artifactId>
+				<version>${spring-javaformat-maven-plugin.version}</version>
+				<executions>
+					<execution>
+						<?m2e ignore?>
+						<phase>validate</phase>
+						<inherited>true</inherited>
+						<goals>
+							<goal>validate</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.xolstice.maven.plugins</groupId>
+				<artifactId>protobuf-maven-plugin</artifactId>
+				<version>0.6.1</version>
+				<configuration>
+					<protocArtifact>
+						com.google.protobuf:protoc:${protobuf-java.version}:exe:${os.detected.classifier}</protocArtifact>
+					<pluginId>grpc-java</pluginId>
+					<pluginArtifact>
+						io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}</pluginArtifact>
+				</configuration>
+				<executions>
+					<execution>
+						<configuration>
+							<pluginParameter>
+								jakarta_omit,@generated=omit
+							</pluginParameter>
+						</configuration>
+						<goals>
+							<goal>compile</goal>
+							<goal>compile-custom</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
+		</plugins>
+	</build>
+
+	<repositories>
+		<repository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/milestone</url>
+			<snapshots>
+				<enabled>false</enabled>
+			</snapshots>
+		</repository>
+		<repository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/snapshot</url>
+			<releases>
+				<enabled>false</enabled>
+			</releases>
+		</repository>
+	</repositories>
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-milestones</id>
+			<name>Spring Milestones</name>
+			<url>https://repo.spring.io/milestone</url>
+			<snapshots>
+				<enabled>false</enabled>
+			</snapshots>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-snapshots</id>
+			<name>Spring Snapshots</name>
+			<url>https://repo.spring.io/snapshot</url>
+			<releases>
+				<enabled>false</enabled>
+			</releases>
+		</pluginRepository>
+	</pluginRepositories>
+
+
+</project>
--- a/samples/grpc-secure/settings.gradle
+++ b/samples/grpc-secure/settings.gradle
@@ -0,0 +1,8 @@
+pluginManagement {
+	repositories {
+		maven { url 'https://repo.spring.io/milestone' }
+		maven { url 'https://repo.spring.io/snapshot' }
+		gradlePluginPortal()
+	}
+}
+rootProject.name = 'demo'
--- a/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerApplication.java
+++ b/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerApplication.java
@@ -0,0 +1,61 @@
+package org.springframework.grpc.sample;
+
+import static org.springframework.security.config.Customizer.withDefaults;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Import;
+import org.springframework.grpc.server.GlobalServerInterceptor;
+import org.springframework.grpc.server.security.GrpcSecurity;
+import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.core.authority.AuthorityUtils;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
+
+import io.grpc.Metadata;
+import io.grpc.ServerInterceptor;
+
+@SpringBootApplication
+@EnableMethodSecurity
+@Import(AuthenticationConfiguration.class)
+public class GrpcServerApplication {
+
+	public static final Metadata.Key<String> USER_KEY = Metadata.Key.of("X-USER", Metadata.ASCII_STRING_MARSHALLER);
+
+	public static void main(String[] args) {
+		SpringApplication.run(GrpcServerApplication.class, args);
+	}
+
+	@Bean
+	public InMemoryUserDetailsManager inMemoryUserDetailsManager() {
+		return new InMemoryUserDetailsManager(
+				User.withUsername("user").password("{noop}user").authorities("ROLE_USER").build(),
+				User.withUsername("admin").password("{noop}admin").authorities("ROLE_ADMIN").build());
+	}
+
+	@Bean
+	@GlobalServerInterceptor
+	public ServerInterceptor securityInterceptor(GrpcSecurity security) throws Exception {
+		return security
+				.authorizeRequests(requests -> requests
+						.methods("Simple/StreamHello").hasAuthority("ROLE_ADMIN")
+						.methods("Simple/SayHello").hasAuthority("ROLE_USER")
+						.allRequests().permitAll())
+				.httpBasic(withDefaults())
+				.preauth(withDefaults())
+				.authenticationExtractor((headers, attributes) -> {
+					String user = headers.get(USER_KEY);
+					if (user != null) {
+						return new PreAuthenticatedAuthenticationToken(user, "N/A",
+								AuthorityUtils.createAuthorityList("ROLE_" + user.toUpperCase()));
+					}
+					return null;
+				})
+				.build();
+
+	}
+
+}
--- a/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerService.java
+++ b/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerService.java
@@ -0,0 +1,50 @@
+package org.springframework.grpc.sample;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.grpc.sample.proto.HelloReply;
+import org.springframework.grpc.sample.proto.HelloRequest;
+import org.springframework.grpc.sample.proto.SimpleGrpc;
+import org.springframework.stereotype.Service;
+
+import io.grpc.stub.StreamObserver;
+
+@Service
+public class GrpcServerService extends SimpleGrpc.SimpleImplBase {
+
+	private static Log log = LogFactory.getLog(GrpcServerService.class);
+
+	@Override
+	// @PreAuthorize("hasAuthority('ROLE_USER')")
+	public void sayHello(HelloRequest req, StreamObserver<HelloReply> responseObserver) {
+		log.info("Hello " + req.getName());
+		if (req.getName().startsWith("error")) {
+			throw new IllegalArgumentException("Bad name: " + req.getName());
+		}
+		HelloReply reply = HelloReply.newBuilder().setMessage("Hello ==> " + req.getName()).build();
+		responseObserver.onNext(reply);
+		responseObserver.onCompleted();
+	}
+
+	@Override
+	// @PreAuthorize("hasAuthority('ROLE_ADMIN')")
+	public void streamHello(HelloRequest req, StreamObserver<HelloReply> responseObserver) {
+		log.info("Hello " + req.getName());
+		int count = 0;
+		while (count < 10) {
+			HelloReply reply = HelloReply.newBuilder().setMessage("Hello(" + count + ") ==> " + req.getName()).build();
+			responseObserver.onNext(reply);
+			count++;
+			try {
+				Thread.sleep(1000L);
+			}
+			catch (InterruptedException e) {
+				Thread.currentThread().interrupt();
+				responseObserver.onError(e);
+				return;
+			}
+		}
+		responseObserver.onCompleted();
+	}
+
+}
--- a/samples/grpc-secure/src/main/proto/hello.proto
+++ b/samples/grpc-secure/src/main/proto/hello.proto
@@ -0,0 +1,23 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "org.springframework.grpc.sample.proto";
+option java_outer_classname = "HelloWorldProto";
+
+// The greeting service definition.
+service Simple {
+    // Sends a greeting
+    rpc SayHello (HelloRequest) returns (HelloReply) {
+    }
+    rpc StreamHello(HelloRequest) returns (stream HelloReply) {}
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+    string name = 1;
+}
+
+// The response message containing the greetings
+message HelloReply {
+    string message = 1;
+}
--- a/samples/grpc-secure/src/main/resources/META-INF/native-image/org.springframework.samples/grpc-server-sample/native-image.properties
+++ b/samples/grpc-secure/src/main/resources/META-INF/native-image/org.springframework.samples/grpc-server-sample/native-image.properties
@@ -0,0 +1,2 @@
+# Ignored unless building in Nix (https://github.com/oracle/graal/issues/8639)
+Args = -ENIX_LDFLAGS -ENIX_CC_WRAPPER_TARGET_HOST_x86_64_unknown_linux_gnu
--- a/samples/grpc-secure/src/main/resources/application.properties
+++ b/samples/grpc-secure/src/main/resources/application.properties
@@ -0,0 +1,2 @@
+spring.application.name=grpc-server
+logging.level.org.springframework.security=debug
--- a/samples/grpc-secure/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
+++ b/samples/grpc-secure/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
@@ -0,0 +1,129 @@
+package org.springframework.grpc.sample;
+
+import static org.junit.Assert.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.grpc.client.ChannelBuilderOptions;
+import org.springframework.grpc.client.GrpcChannelFactory;
+import org.springframework.grpc.client.security.BasicAuthenticationInterceptor;
+import org.springframework.grpc.sample.proto.HelloReply;
+import org.springframework.grpc.sample.proto.HelloRequest;
+import org.springframework.grpc.sample.proto.SimpleGrpc;
+import org.springframework.grpc.test.LocalGrpcPort;
+import org.springframework.test.annotation.DirtiesContext;
+
+import io.grpc.CallOptions;
+import io.grpc.Channel;
+import io.grpc.ClientCall;
+import io.grpc.ClientInterceptor;
+import io.grpc.ForwardingClientCall.SimpleForwardingClientCall;
+import io.grpc.MethodDescriptor;
+import io.grpc.Status.Code;
+import io.grpc.StatusRuntimeException;
+
+@SpringBootTest(properties = { "spring.grpc.server.port=0",
+		"spring.grpc.client.channels.stub.address=static://0.0.0.0:${local.grpc.port}",
+		"spring.grpc.client.channels.basic.address=static://0.0.0.0:${local.grpc.port}",
+		"spring.grpc.client.channels.secure.address=static://0.0.0.0:${local.grpc.port}" })
+public class GrpcServerApplicationTests {
+
+	public static void main(String[] args) {
+		new SpringApplicationBuilder(GrpcServerApplication.class, ExtraConfiguration.class)
+				.run(args);
+	}
+
+	@Autowired
+	@Qualifier("stub")
+	private SimpleGrpc.SimpleBlockingStub stub;
+
+	@Autowired
+	@Qualifier("secure")
+	private SimpleGrpc.SimpleBlockingStub secure;
+
+	@Autowired
+	@Qualifier("basic")
+	private SimpleGrpc.SimpleBlockingStub basic;
+
+	@Test
+	@DirtiesContext
+	void contextLoads() {
+	}
+
+	@Test
+	@DirtiesContext
+	void unauthenticated() {
+		StatusRuntimeException exception = assertThrows(StatusRuntimeException.class,
+				() -> stub.sayHello(HelloRequest.newBuilder().setName("Alien").build()));
+		assertEquals(Code.UNAUTHENTICATED, exception.getStatus().getCode());
+	}
+
+	@Test
+	@DirtiesContext
+	void unauthauthorized() {
+		StatusRuntimeException exception = assertThrows(StatusRuntimeException.class,
+				() -> secure.streamHello(HelloRequest.newBuilder().setName("Alien").build()).next());
+		assertEquals(Code.PERMISSION_DENIED, exception.getStatus().getCode());
+	}
+
+	@Test
+	@DirtiesContext
+	void authenticated() {
+		HelloReply response = secure.sayHello(HelloRequest.newBuilder().setName("Alien").build());
+		assertEquals("Hello ==> Alien", response.getMessage());
+	}
+
+	@Test
+	@DirtiesContext
+	void basic() {
+		HelloReply response = basic.sayHello(HelloRequest.newBuilder().setName("Alien").build());
+		assertEquals("Hello ==> Alien", response.getMessage());
+	}
+
+	@TestConfiguration
+	static class ExtraConfiguration {
+
+		@Bean
+		@Lazy
+		SimpleGrpc.SimpleBlockingStub secure(GrpcChannelFactory channels) {
+			return SimpleGrpc.newBlockingStub(channels.createChannel("secure",
+					ChannelBuilderOptions.defaults().withInterceptors(List.of(new ClientInterceptor() {
+						@Override
+						public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method,
+								CallOptions callOptions, Channel next) {
+							return new SimpleForwardingClientCall<ReqT, RespT>(next.newCall(method, callOptions)) {
+								public void start(ClientCall.Listener<RespT> responseListener,
+										io.grpc.Metadata headers) {
+									headers.put(GrpcServerApplication.USER_KEY, "user");
+									super.start(responseListener, headers);
+								};
+							};
+						}
+					}))));
+		}
+
+		@Bean
+		@Lazy
+		SimpleGrpc.SimpleBlockingStub basic(GrpcChannelFactory channels) {
+			return SimpleGrpc.newBlockingStub(channels.createChannel("basic", ChannelBuilderOptions.defaults()
+					.withInterceptors(List.of(new BasicAuthenticationInterceptor("user", "user")))));
+		}
+
+		@Bean
+		@Lazy
+		SimpleGrpc.SimpleBlockingStub stub(GrpcChannelFactory channels, @LocalGrpcPort int port) {
+			return SimpleGrpc.newBlockingStub(channels.createChannel("stub"));
+		}
+
+	}
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/AuthenticationServerInterceptor.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/AuthenticationServerInterceptor.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.core.Ordered;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.authentication.AnonymousAuthenticationToken;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.authorization.AuthorizationManager;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.authority.AuthorityUtils;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+import io.grpc.ForwardingServerCallListener;
+import io.grpc.Metadata;
+import io.grpc.ServerCall;
+import io.grpc.ServerCall.Listener;
+import io.grpc.ServerCallHandler;
+import io.grpc.ServerInterceptor;
+
+/**
+ * An interceptor that extracts the authentication credentials from the gRPC
+ * request
+ * headers and metadata, authenticates the user, and sets the authentication in
+ * the
+ * SecurityContext. This interceptor should be registered with the gRPC server
+ * to handle
+ * authentication.
+ *
+ * @author Dave Syer
+ */
+public class AuthenticationServerInterceptor implements ServerInterceptor, Ordered {
+
+	private final AuthenticationManager authenticationManager;
+
+	private final GrpcAuthenticationExtractor extractor;
+
+	private final AuthorizationManager<CallContext> authorizationManager;
+
+	@Override
+	public int getOrder() {
+		return GrpcSecurity.CONTEXT_FILTER_ORDER - 10;
+	}
+
+	public AuthenticationServerInterceptor(AuthenticationManager authenticationManager,
+			GrpcAuthenticationExtractor extractor, AuthorizationManager<CallContext> authorizationManager) {
+		this.authenticationManager = authenticationManager;
+		this.extractor = extractor;
+		this.authorizationManager = authorizationManager;
+	}
+
+	@Override
+	public <ReqT, RespT> Listener<ReqT> interceptCall(ServerCall<ReqT, RespT> call, Metadata headers,
+			ServerCallHandler<ReqT, RespT> next) {
+		SecurityContext securityContext = SecurityContextHolder.getContext();
+		Authentication user = this.extractor.extract(headers, call.getAttributes());
+		Authentication authenticated;
+		if (user != null) {
+			authenticated = this.authenticationManager.authenticate(user);
+		} else {
+			authenticated = new AnonymousAuthenticationToken("anonymous", "anonymous",
+					AuthorityUtils.createAuthorityList("ROLE_ANONYMOUS"));
+		}
+		securityContext.setAuthentication(authenticated);
+		CallContext context = new CallContext(headers, call.getAttributes(), call.getMethodDescriptor());
+		if (this.authorizationManager != null && authenticated != null) {
+			return new AuthenticationListener<ReqT>(next.startCall(call, headers), this.authorizationManager, context,
+					authenticated);
+		}
+		return next.startCall(call, headers);
+	}
+
+	static class AuthenticationListener<ReqT> extends ForwardingServerCallListener<ReqT> {
+
+		private final Listener<ReqT> delegate;
+		private final AuthorizationManager<CallContext> authorizationManager;
+		private final CallContext context;
+		private final Authentication authentication;
+
+		AuthenticationListener(io.grpc.ServerCall.Listener<ReqT> delegate,
+				AuthorizationManager<CallContext> authorizationManager, CallContext context,
+				Authentication authenticated) {
+			this.delegate = delegate;
+			this.authorizationManager = authorizationManager;
+			this.context = context;
+			this.authentication = authenticated;
+		}
+
+		@Override
+		public void onReady() {
+			if (!this.authorizationManager.authorize(() -> authentication, this.context).isGranted()) {
+				throw new AccessDeniedException("not allowed");
+			}
+			super.onReady();
+		}
+
+		@Override
+		protected Listener<ReqT> delegate() {
+			return this.delegate;
+		}
+
+	}
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallContext.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallContext.java
@@ -0,0 +1,8 @@
+package org.springframework.grpc.server.security;
+
+import io.grpc.Attributes;
+import io.grpc.Metadata;
+import io.grpc.MethodDescriptor;
+
+public record CallContext(Metadata headers, Attributes attributes, MethodDescriptor<?, ?> method) {
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallMatcher.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallMatcher.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+public interface CallMatcher {
+
+	CallMatcher ALL = (context) -> true;
+
+	boolean matches(CallContext context);
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/GrpcAuthenticationExtractor.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/GrpcAuthenticationExtractor.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.security.core.Authentication;
+
+import io.grpc.Attributes;
+import io.grpc.Metadata;
+
+public interface GrpcAuthenticationExtractor {
+
+	Authentication extract(Metadata headers, Attributes attributes);
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicAuthenticationExtractor.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicAuthenticationExtractor.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+import java.util.Locale;
+
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+
+import io.grpc.Attributes;
+import io.grpc.Metadata;
+
+/**
+ * Extracts the HTTP Basic authentication credentials from the gRPC request headers. If
+ * the 'Authorization' header is present and starts with 'Basic ', the username and
+ * password are extracted from the Base64-encoded header value and returned as a
+ * {@link UsernamePasswordAuthenticationToken}. If the header is not present or does not
+ * start with 'Basic ', this method returns null.
+ *
+ * @author Dave Syer
+ */
+public class HttpBasicAuthenticationExtractor implements GrpcAuthenticationExtractor {
+
+	@Override
+	public Authentication extract(Metadata headers, Attributes attributes) {
+		String auth = headers.get(GrpcSecurity.AUTHORIZATION_KEY);
+		if (auth == null) {
+			return null;
+		}
+		if (!auth.toLowerCase(Locale.ROOT).startsWith("basic ")) {
+			return null;
+		}
+		auth = auth.substring("basic ".length());
+		return extract(auth);
+	}
+
+	private Authentication extract(String auth) {
+		String[] parts = new String(Base64.getDecoder().decode(auth), StandardCharsets.UTF_8).split(":");
+		if (parts.length != 2) {
+			return null;
+		}
+		return new UsernamePasswordAuthenticationToken(parts[0], parts[1]);
+	}
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicConfigurer.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicConfigurer.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
+import org.springframework.security.config.annotation.SecurityBuilder;
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.core.userdetails.UserDetailsService;
+
+public final class HttpBasicConfigurer<H extends SecurityBuilder<AuthenticationServerInterceptor>>
+		extends SecurityConfigurerAdapter<AuthenticationServerInterceptor, H> {
+
+	private final ApplicationContext context;
+
+	private final AuthenticationManagerBuilder authenticationManagerBuilder;
+
+	private UserDetailsService userDetailsService;
+
+	public HttpBasicConfigurer(AuthenticationManagerBuilder authenticationManagerBuilder, ApplicationContext context) {
+		this.authenticationManagerBuilder = authenticationManagerBuilder;
+		this.context = context;
+	}
+
+	public HttpBasicConfigurer<H> userDetailsService(UserDetailsService userDetailsService) {
+		this.userDetailsService = userDetailsService;
+		return this;
+	}
+
+	@Override
+	public void configure(H builder) throws Exception {
+		DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
+		UserDetailsService userDetailsService = this.userDetailsService;
+		if (userDetailsService == null) {
+			userDetailsService = this.authenticationManagerBuilder.getDefaultUserDetailsService();
+		}
+		if (userDetailsService == null) {
+			userDetailsService = this.context.getBean(UserDetailsService.class);
+		}
+		provider.setUserDetailsService(userDetailsService);
+		this.authenticationManagerBuilder.authenticationProvider(provider);
+	}
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/PreAuthConfigurer.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/PreAuthConfigurer.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.security.config.annotation.SecurityBuilder;
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.core.userdetails.UserDetailsByNameServiceWrapper;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationProvider;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
+
+public final class PreAuthConfigurer<H extends SecurityBuilder<AuthenticationServerInterceptor>>
+		extends SecurityConfigurerAdapter<AuthenticationServerInterceptor, H> {
+
+	private final ApplicationContext context;
+
+	private final AuthenticationManagerBuilder authenticationManagerBuilder;
+
+	private UserDetailsService userDetailsService;
+
+	public PreAuthConfigurer(AuthenticationManagerBuilder authenticationManagerBuilder, ApplicationContext context) {
+		this.authenticationManagerBuilder = authenticationManagerBuilder;
+		this.context = context;
+	}
+
+	public PreAuthConfigurer<H> userDetailsService(UserDetailsService userDetailsService) {
+		this.userDetailsService = userDetailsService;
+		return this;
+	}
+
+	@Override
+	public void configure(H builder) throws Exception {
+		PreAuthenticatedAuthenticationProvider provider = new PreAuthenticatedAuthenticationProvider();
+		UserDetailsService userDetailsService = this.userDetailsService;
+		if (userDetailsService == null) {
+			userDetailsService = this.authenticationManagerBuilder.getDefaultUserDetailsService();
+		}
+		if (userDetailsService == null) {
+			userDetailsService = this.context.getBean(UserDetailsService.class);
+		}
+		UserDetailsByNameServiceWrapper<PreAuthenticatedAuthenticationToken> details = new UserDetailsByNameServiceWrapper<>(
+				userDetailsService);
+		provider.setPreAuthenticatedUserDetailsService(details);
+		this.authenticationManagerBuilder.authenticationProvider(provider);
+	}
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/RequestMapperConfigurer.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/RequestMapperConfigurer.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Supplier;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.security.access.hierarchicalroles.NullRoleHierarchy;
+import org.springframework.security.access.hierarchicalroles.RoleHierarchy;
+import org.springframework.security.authorization.AuthorityAuthorizationManager;
+import org.springframework.security.authorization.AuthorizationDecision;
+import org.springframework.security.authorization.AuthorizationManager;
+import org.springframework.security.authorization.AuthorizationManagers;
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.core.Authentication;
+import org.springframework.util.Assert;
+import org.springframework.util.PatternMatchUtils;
+import org.springframework.util.function.SingletonSupplier;
+
+public class RequestMapperConfigurer
+		extends SecurityConfigurerAdapter<AuthenticationServerInterceptor, GrpcSecurity> {
+
+	private List<AuthorizedCall> authorizedCalls = new ArrayList<>();
+
+	private final Supplier<RoleHierarchy> roleHierarchy;
+
+	public RequestMapperConfigurer(ApplicationContext context) {
+		this.roleHierarchy = SingletonSupplier.of(() -> (context.getBeanNamesForType(RoleHierarchy.class).length > 0)
+				? context.getBean(RoleHierarchy.class)
+				: new NullRoleHierarchy());
+	}
+
+	@Override
+	public void configure(GrpcSecurity builder) throws Exception {
+		builder.authorizationManager(new RequestMapperAuthorizationManager(this.authorizedCalls));
+	}
+
+	public AuthorizedCall allRequests() {
+		AuthorizedCall call = new AuthorizedCall(CallMatcher.ALL);
+		this.authorizedCalls.add(call);
+		return call;
+	}
+
+	public AuthorizedCall methods(String... patterns) {
+		AuthorizedCall call = new AuthorizedCall(new MethodCallMatcher(patterns));
+		this.authorizedCalls.add(call);
+		return call;
+	}
+
+	private static class MethodCallMatcher implements CallMatcher {
+
+		private String[] patterns;
+
+		public MethodCallMatcher(String... patterns) {
+			this.patterns = patterns;
+		}
+
+		@Override
+		public boolean matches(CallContext context) {
+			return PatternMatchUtils.simpleMatch(patterns, context.method().getFullMethodName());
+		}
+	}
+
+	public class AuthorizedCall {
+
+		static final AuthorizationManager<Object> permitAllAuthorizationManager = (a,
+				o) -> new AuthorizationDecision(true);
+
+		private CallMatcher matcher;
+
+		private boolean not;
+
+		private AuthorizationManager<Object> authorizationManager;
+
+		public AuthorizedCall(CallMatcher matcher) {
+			this.matcher = matcher;
+		}
+
+		public AuthorizedCall not() {
+			this.not = true;
+			return this;
+		}
+
+		public RequestMapperConfigurer permitAll() {
+			return access(permitAllAuthorizationManager);
+		}
+
+		public RequestMapperConfigurer denyAll() {
+			return access((a, o) -> new AuthorizationDecision(false));
+		}
+
+		public RequestMapperConfigurer hasAuthority(String authority) {
+			return access(withRoleHierarchy(AuthorityAuthorizationManager.hasAuthority(authority)));
+		}
+
+		public RequestMapperConfigurer hasAnyAuthority(String... authorities) {
+			return access(withRoleHierarchy(AuthorityAuthorizationManager.hasAnyAuthority(authorities)));
+		}
+
+		public RequestMapperConfigurer access(AuthorizationManager<Object> manager) {
+			Assert.notNull(manager, "manager cannot be null");
+			this.authorizationManager = (this.not)
+					? AuthorizationManagers.not(manager)
+					: manager;
+			return RequestMapperConfigurer.this;
+		}
+
+		private AuthorityAuthorizationManager<Object> withRoleHierarchy(
+				AuthorityAuthorizationManager<Object> manager) {
+			manager.setRoleHierarchy(RequestMapperConfigurer.this.roleHierarchy.get());
+			return manager;
+		}
+
+	}
+
+	public static class RequestMapperAuthorizationManager implements AuthorizationManager<CallContext> {
+
+		private final List<AuthorizedCall> authorizedCalls;
+
+		public RequestMapperAuthorizationManager(List<AuthorizedCall> authorizedCalls) {
+			this.authorizedCalls = authorizedCalls;
+		}
+
+		@SuppressWarnings("deprecation")
+		@Override
+		public AuthorizationDecision check(Supplier<Authentication> authentication, CallContext context) {
+			for (AuthorizedCall authorizedCall : this.authorizedCalls) {
+				if (authorizedCall.matcher.matches(context)) {
+					return authorizedCall.authorizationManager.check(authentication, context);
+				}
+			}
+			return new AuthorizationDecision(false);
+		}
+
+	}
+
+}
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/SslContextPreAuthenticationExtractor.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/SslContextPreAuthenticationExtractor.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.grpc.server.security;
+
+import java.security.cert.Certificate;
+import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.net.ssl.SSLSession;
+
+import org.springframework.lang.Nullable;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
+import org.springframework.security.web.authentication.preauth.x509.SubjectDnX509PrincipalExtractor;
+import org.springframework.security.web.authentication.preauth.x509.X509PrincipalExtractor;
+
+import io.grpc.Attributes;
+import io.grpc.Grpc;
+import io.grpc.Metadata;
+
+public class SslContextPreAuthenticationExtractor implements GrpcAuthenticationExtractor {
+
+	private X509PrincipalExtractor principalExtractor;
+
+	public SslContextPreAuthenticationExtractor() {
+		this(new SubjectDnX509PrincipalExtractor());
+	}
+
+	public SslContextPreAuthenticationExtractor(X509PrincipalExtractor principalExtractor) {
+		this.principalExtractor = principalExtractor;
+	}
+
+	@Override
+	public Authentication extract(Metadata headers, Attributes attributes) {
+		SSLSession session = attributes.get(Grpc.TRANSPORT_ATTR_SSL_SESSION);
+		if (session != null) {
+			X509Certificate[] certificates = initCertificates(session);
+			if (certificates != null) {
+				return new PreAuthenticatedAuthenticationToken(
+						this.principalExtractor.extractPrincipal(certificates[0]), certificates[0]);
+			}
+		}
+		return null;
+	}
+
+	@Nullable
+	private static X509Certificate[] initCertificates(SSLSession session) {
+		Certificate[] certificates;
+		try {
+			certificates = session.getPeerCertificates();
+		}
+		catch (Throwable ex) {
+			return null;
+		}
+
+		List<X509Certificate> result = new ArrayList<>(certificates.length);
+		for (Certificate certificate : certificates) {
+			if (certificate instanceof X509Certificate x509Certificate) {
+				result.add(x509Certificate);
+			}
+		}
+		return (!result.isEmpty() ? result.toArray(new X509Certificate[0]) : null);
+	}
+
+}