├── .gitignore ├── HELP.md ├── LICENSE ├── README.md ├── build.gradle.kts ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── settings.gradle.kts └── src ├── main ├── java │ └── wf │ │ └── garnier │ │ └── spring │ │ └── security │ │ └── thegoodparts │ │ ├── DanielAuthenticationProvider.java │ │ ├── ForbiddenFilter.java │ │ ├── GreetingsController.java │ │ ├── RobotAccountConfigurer.java │ │ ├── RobotAuthentication.java │ │ ├── RobotAuthenticationFilter.java │ │ ├── RobotAuthenticationProvider.java │ │ ├── SecurityConfig.java │ │ └── TheGoodPartsApplication.java └── resources │ ├── application.yml │ ├── static │ ├── css │ │ └── style.css │ └── favicon.svg │ └── templates │ ├── private.html │ └── public.html └── test └── java └── wf └── garnier └── spring └── security └── thegoodparts └── TheGoodPartsApplicationTests.java /.gitignore: -------------------------------------------------------------------------------- 1 | HELP.md 2 | .gradle 3 | build/ 4 | !gradle/wrapper/gradle-wrapper.jar 5 | !**/src/main/**/build/ 6 | !**/src/test/**/build/ 7 | 8 | ### STS ### 9 | .apt_generated 10 | .classpath 11 | .factorypath 12 | .project 13 | .settings 14 | .springBeans 15 | .sts4-cache 16 | bin/ 17 | !**/src/main/**/bin/ 18 | !**/src/test/**/bin/ 19 | 20 | ### IntelliJ IDEA ### 21 | .idea 22 | *.iws 23 | *.iml 24 | *.ipr 25 | out/ 26 | !**/src/main/**/out/ 27 | !**/src/test/**/out/ 28 | 29 | ### NetBeans ### 30 | /nbproject/private/ 31 | /nbbuild/ 32 | /dist/ 33 | /nbdist/ 34 | /.nb-gradle/ 35 | 36 | ### VS Code ### 37 | .vscode/ 38 | -------------------------------------------------------------------------------- /HELP.md: -------------------------------------------------------------------------------- 1 | # Read Me First 2 | The following was discovered as part of building this project: 3 | 4 | * The original package name 'wf.garnier.spring.security.the-good-parts' is invalid and this project uses 'wf.garnier.spring.security.thegoodparts' instead. 5 | 6 | # Getting Started 7 | 8 | ### Reference Documentation 9 | For further reference, please consider the following sections: 10 | 11 | * [Official Gradle documentation](https://docs.gradle.org) 12 | * [Spring Boot Gradle Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/3.0.3/gradle-plugin/reference/html/) 13 | * [Create an OCI image](https://docs.spring.io/spring-boot/docs/3.0.3/gradle-plugin/reference/html/#build-image) 14 | * [Spring Web](https://docs.spring.io/spring-boot/docs/3.0.3/reference/htmlsingle/#web) 15 | * [Thymeleaf](https://docs.spring.io/spring-boot/docs/3.0.3/reference/htmlsingle/#web.servlet.spring-mvc.template-engines) 16 | 17 | ### Guides 18 | The following guides illustrate how to use some features concretely: 19 | 20 | * [Building a RESTful Web Service](https://spring.io/guides/gs/rest-service/) 21 | * [Serving Web Content with Spring MVC](https://spring.io/guides/gs/serving-web-content/) 22 | * [Building REST services with Spring](https://spring.io/guides/tutorials/rest/) 23 | * [Handling Form Submission](https://spring.io/guides/gs/handling-form-submission/) 24 | 25 | ### Additional Links 26 | These additional references should also help you: 27 | 28 | * [Gradle Build Scans – insights for your project's build](https://scans.gradle.com#gradle) 29 | 30 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ⚠️ Archival notice 2 | 3 | This repository has been archived. It is kept around so that the link stays alive. 4 | 5 | For newer versions of this content, please visit 6 | [Kehrlann/spring-security-the-good-parts](https://github.com/Kehrlann/spring-security-the-good-parts). 7 | 8 | --- 9 | 10 | 11 | # spring-security-the-good-parts-code 12 | 13 | Code for "Spring Security: The Good Parts" 14 | 15 | ## Demo scenario 16 | 17 | 18 | ### Step 1: A Boot app, with no security 19 | 20 | We create a `/public` and `/private` page. No security is applied. 21 | 22 | The `/private` page has some tricks to show a logout button ... if some `_csrf` token is available. 23 | It's not the case yet, it will be injected by Spring Security later on. When you think about it, it 24 | makes sense: you can't "log in", so you shouldn't be able to "log out" either. 25 | 26 | ### Step 2: Basic Spring-Security setup 27 | 28 | We introduce Spring Security. We create a `SecurityConfig` configuration class, where we will store 29 | all of our security-related configuration customizations. 30 | 31 | The first customization is to create a custom SecurityFilterChain, to override the defaults that 32 | Spring Boot give us. We make sure that every request must be authenticated, except the few things 33 | that we deem "public", such as `/` (public page), the favicon, the css resources, etc. We also 34 | introduce `.formLogin()` to ensure form login is enabled for us. 35 | 36 | We also introduce our own UserDetailsService, because we don't want to have to copy the random 37 | password that Boot generates every time we boot up the app. It's an in-memory implementation, for 38 | demo purposes. 39 | 40 | Finally, we leverage the `Authentication` object that Spring Security creates for us to display the 41 | name of the logged-in user. 42 | 43 | ### Step 3: Add SSO, with oauth2-login 44 | 45 | We add the dependencies and the code to make SSO login work. It requires adding some properties, and 46 | just enabling "oauth2 login" in our previous security configuration. Everything stays the same. 47 | 48 | We want a nicer "authentication name" when logged in with Google, rather than the ID we get back, so 49 | we tweak our GreetingController to display the e-mail when doing SSO login. 50 | 51 | ### Step 4: Our first Filter 52 | 53 | We create our first Filter, the `VerbotenFilter`. It sets the response code to 403 (Forbidden), with 54 | an error message, when the `x-forbidden: true` header is present. Otherwise it's a no-op. 55 | 56 | We register it in our filter chain. 57 | 58 | You can see the results, e.g. using HTTPie or cURL: 59 | 60 | ```shell 61 | $ curl localhost:8080 -H "x-forbidden: true" -v 62 | $ # or 63 | $ http localhost:8080 x-forbidden:true 64 | ``` 65 | 66 | ### Step 5: RobotAuthenticationFilter 67 | 68 | We create a filter that authenticates the user. In this case, it's a "robot account" that sends us a 69 | secret password in the `X-Robot-Password` header. 70 | 71 | If the header is present, we make sure the password is correct. If the password is incorrect, we 72 | reject the request. If the password is fine, we perform the actual authentication by creating an 73 | instance of an appropriate implementation of the `Authentication` interface. 74 | 75 | If the header is absent, we let the rest of the filter chain decide what to do. 76 | 77 | See: 78 | 79 | ```shell 80 | $ curl localhost:8080/private -H "x-robot-password: beep-boop" 81 | $ # or 82 | $ http localhost:8080/private x-robot-password:beep-boop 83 | ``` 84 | 85 | ### Step 6: Our first AuthenticationProvider, because user "daniel" is _special_ 86 | 87 | We create an AuthenticationProvider that will let user "daniel" in, no matter the password. 88 | 89 | We also turn on HTTP Basic authentication - and we don't have to do anything to grant the same 90 | rights to "daniel". 91 | 92 | See: 93 | 94 | ```shell 95 | $ curl localhost:8080/private -u "daniel:foobar" 96 | $ # or 97 | $ http localhost:8080/private --auth "daniel:barfoo" 98 | ``` 99 | 100 | This leverages the `ProviderManager`, which, for examples, produces Spring events when a login 101 | succeeds or fails. We listen to `AuthenticationSuccessEvents` and do a System.out.println with the 102 | Authentication class and the Authentication name. Notice how RobotAuthentications are _not_ logged, 103 | as they happen directly in a filter, without using an AuthenticationManager. 104 | 105 | ### Step 7: Rework the RobotAuthenticationFilter to use AuthenticationManager 106 | 107 | We make sure the RobotAuthenticationFilter actually uses an Authentication Manager, like the rest of 108 | Spring Security. To do this, we need to create an "unauthenticated" version of the 109 | RobotAuthentication. We also need an AuthenticationProvider to handle those RobotAuthentication. 110 | 111 | To get an AuthenticationManager, we access the Filter chain's local AuthenticationManager. See 112 | the [Spring Security without the WebSecurityConfigurerAdapter blog post](https://spring.io/blog/2022/02/21/spring-security-without-the-websecurityconfigureradapter), 113 | which talks about how to access that class. We create a bespoke AbstractHttpConfigurer and put all 114 | Robot-related configuration in the class, so we can get the authentication manager. 115 | 116 | ### Step8: Rework the RobotAuthenticationFilter to extend AuthenticationFilter 117 | 118 | Most `Authentication` filters in Spring Security can be written as an `AuthenticationFilter` 119 | sublclass. It follows a simple "composition" pattern, where you declard an 120 | `AuthenticationConverter`, an `AuthenticationManager`, and both success and failure handlers. The 121 | wiring is then done by the base class, which does: 122 | 123 | 1. HttpRequest -> [AuthenticationConverter] -> Authentication 124 | 2. Authentication -> [AuthenticationManager] -> Authentication in the SecurityContext (if succesful) 125 | 3. Authentication(Exception) -> [Authentication(Success|Failure)Handler] 126 | -------------------------------------------------------------------------------- /build.gradle.kts: -------------------------------------------------------------------------------- 1 | plugins { 2 | java 3 | id("org.springframework.boot") version "3.2.4" 4 | id("io.spring.dependency-management") version "1.1.4" 5 | } 6 | 7 | group = "wf.garnier.spring.security" 8 | version = "0.0.1-SNAPSHOT" 9 | java.sourceCompatibility = JavaVersion.VERSION_17 10 | 11 | repositories { 12 | mavenCentral() 13 | } 14 | 15 | dependencies { 16 | implementation("org.springframework.boot:spring-boot-starter-thymeleaf") 17 | implementation("org.springframework.boot:spring-boot-starter-web") 18 | developmentOnly("org.springframework.boot:spring-boot-devtools") 19 | implementation("org.springframework.boot:spring-boot-starter-security") 20 | implementation("org.springframework.boot:spring-boot-starter-oauth2-client") 21 | testImplementation("org.springframework.boot:spring-boot-starter-test") 22 | } 23 | 24 | tasks.withType { 25 | useJUnitPlatform() 26 | } 27 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Kehrlann/spring-security-the-good-parts-code/d9b92256907bf52fbf6681f5a4fdacee50adcc9e/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-bin.zip 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | # 4 | # Copyright © 2015-2021 the original authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | # 21 | # Gradle start up script for POSIX generated by Gradle. 22 | # 23 | # Important for running: 24 | # 25 | # (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is 26 | # noncompliant, but you have some other compliant shell such as ksh or 27 | # bash, then to run this script, type that shell name before the whole 28 | # command line, like: 29 | # 30 | # ksh Gradle 31 | # 32 | # Busybox and similar reduced shells will NOT work, because this script 33 | # requires all of these POSIX shell features: 34 | # * functions; 35 | # * expansions «$var», «${var}», «${var:-default}», «${var+SET}», 36 | # «${var#prefix}», «${var%suffix}», and «$( cmd )»; 37 | # * compound commands having a testable exit status, especially «case»; 38 | # * various built-in commands including «command», «set», and «ulimit». 39 | # 40 | # Important for patching: 41 | # 42 | # (2) This script targets any POSIX shell, so it avoids extensions provided 43 | # by Bash, Ksh, etc; in particular arrays are avoided. 44 | # 45 | # The "traditional" practice of packing multiple parameters into a 46 | # space-separated string is a well documented source of bugs and security 47 | # problems, so this is (mostly) avoided, by progressively accumulating 48 | # options in "$@", and eventually passing that to Java. 49 | # 50 | # Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, 51 | # and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; 52 | # see the in-line comments for details. 53 | # 54 | # There are tweaks for specific operating systems such as AIX, CygWin, 55 | # Darwin, MinGW, and NonStop. 56 | # 57 | # (3) This script is generated from the Groovy template 58 | # https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt 59 | # within the Gradle project. 60 | # 61 | # You can find Gradle at https://github.com/gradle/gradle/. 62 | # 63 | ############################################################################## 64 | 65 | # Attempt to set APP_HOME 66 | 67 | # Resolve links: $0 may be a link 68 | app_path=$0 69 | 70 | # Need this for daisy-chained symlinks. 71 | while 72 | APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path 73 | [ -h "$app_path" ] 74 | do 75 | ls=$( ls -ld "$app_path" ) 76 | link=${ls#*' -> '} 77 | case $link in #( 78 | /*) app_path=$link ;; #( 79 | *) app_path=$APP_HOME$link ;; 80 | esac 81 | done 82 | 83 | APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit 84 | 85 | APP_NAME="Gradle" 86 | APP_BASE_NAME=${0##*/} 87 | 88 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 89 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 90 | 91 | # Use the maximum available, or set MAX_FD != -1 to use that value. 92 | MAX_FD=maximum 93 | 94 | warn () { 95 | echo "$*" 96 | } >&2 97 | 98 | die () { 99 | echo 100 | echo "$*" 101 | echo 102 | exit 1 103 | } >&2 104 | 105 | # OS specific support (must be 'true' or 'false'). 106 | cygwin=false 107 | msys=false 108 | darwin=false 109 | nonstop=false 110 | case "$( uname )" in #( 111 | CYGWIN* ) cygwin=true ;; #( 112 | Darwin* ) darwin=true ;; #( 113 | MSYS* | MINGW* ) msys=true ;; #( 114 | NONSTOP* ) nonstop=true ;; 115 | esac 116 | 117 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 118 | 119 | 120 | # Determine the Java command to use to start the JVM. 121 | if [ -n "$JAVA_HOME" ] ; then 122 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 123 | # IBM's JDK on AIX uses strange locations for the executables 124 | JAVACMD=$JAVA_HOME/jre/sh/java 125 | else 126 | JAVACMD=$JAVA_HOME/bin/java 127 | fi 128 | if [ ! -x "$JAVACMD" ] ; then 129 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 130 | 131 | Please set the JAVA_HOME variable in your environment to match the 132 | location of your Java installation." 133 | fi 134 | else 135 | JAVACMD=java 136 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 137 | 138 | Please set the JAVA_HOME variable in your environment to match the 139 | location of your Java installation." 140 | fi 141 | 142 | # Increase the maximum file descriptors if we can. 143 | if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then 144 | case $MAX_FD in #( 145 | max*) 146 | MAX_FD=$( ulimit -H -n ) || 147 | warn "Could not query maximum file descriptor limit" 148 | esac 149 | case $MAX_FD in #( 150 | '' | soft) :;; #( 151 | *) 152 | ulimit -n "$MAX_FD" || 153 | warn "Could not set maximum file descriptor limit to $MAX_FD" 154 | esac 155 | fi 156 | 157 | # Collect all arguments for the java command, stacking in reverse order: 158 | # * args from the command line 159 | # * the main class name 160 | # * -classpath 161 | # * -D...appname settings 162 | # * --module-path (only if needed) 163 | # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. 164 | 165 | # For Cygwin or MSYS, switch paths to Windows format before running java 166 | if "$cygwin" || "$msys" ; then 167 | APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) 168 | CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) 169 | 170 | JAVACMD=$( cygpath --unix "$JAVACMD" ) 171 | 172 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 173 | for arg do 174 | if 175 | case $arg in #( 176 | -*) false ;; # don't mess with options #( 177 | /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath 178 | [ -e "$t" ] ;; #( 179 | *) false ;; 180 | esac 181 | then 182 | arg=$( cygpath --path --ignore --mixed "$arg" ) 183 | fi 184 | # Roll the args list around exactly as many times as the number of 185 | # args, so each arg winds up back in the position where it started, but 186 | # possibly modified. 187 | # 188 | # NB: a `for` loop captures its iteration list before it begins, so 189 | # changing the positional parameters here affects neither the number of 190 | # iterations, nor the values presented in `arg`. 191 | shift # remove old arg 192 | set -- "$@" "$arg" # push replacement arg 193 | done 194 | fi 195 | 196 | # Collect all arguments for the java command; 197 | # * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of 198 | # shell script including quotes and variable substitutions, so put them in 199 | # double quotes to make sure that they get re-expanded; and 200 | # * put everything else in single quotes, so that it's not re-expanded. 201 | 202 | set -- \ 203 | "-Dorg.gradle.appname=$APP_BASE_NAME" \ 204 | -classpath "$CLASSPATH" \ 205 | org.gradle.wrapper.GradleWrapperMain \ 206 | "$@" 207 | 208 | # Stop when "xargs" is not available. 209 | if ! command -v xargs >/dev/null 2>&1 210 | then 211 | die "xargs is not available" 212 | fi 213 | 214 | # Use "xargs" to parse quoted args. 215 | # 216 | # With -n1 it outputs one arg per line, with the quotes and backslashes removed. 217 | # 218 | # In Bash we could simply go: 219 | # 220 | # readarray ARGS < <( xargs -n1 <<<"$var" ) && 221 | # set -- "${ARGS[@]}" "$@" 222 | # 223 | # but POSIX shell has neither arrays nor command substitution, so instead we 224 | # post-process each arg (as a line of input to sed) to backslash-escape any 225 | # character that might be a shell metacharacter, then use eval to reverse 226 | # that process (while maintaining the separation between arguments), and wrap 227 | # the whole thing up as a single "set" statement. 228 | # 229 | # This will of course break if any of these variables contains a newline or 230 | # an unmatched quote. 231 | # 232 | 233 | eval "set -- $( 234 | printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | 235 | xargs -n1 | 236 | sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | 237 | tr '\n' ' ' 238 | )" '"$@"' 239 | 240 | exec "$JAVACMD" "$@" 241 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%"=="" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%"=="" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if %ERRORLEVEL% equ 0 goto execute 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto execute 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :execute 68 | @rem Setup the command line 69 | 70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 71 | 72 | 73 | @rem Execute Gradle 74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 75 | 76 | :end 77 | @rem End local scope for the variables with windows NT shell 78 | if %ERRORLEVEL% equ 0 goto mainEnd 79 | 80 | :fail 81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 82 | rem the _cmd.exe /c_ return code! 83 | set EXIT_CODE=%ERRORLEVEL% 84 | if %EXIT_CODE% equ 0 set EXIT_CODE=1 85 | if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% 86 | exit /b %EXIT_CODE% 87 | 88 | :mainEnd 89 | if "%OS%"=="Windows_NT" endlocal 90 | 91 | :omega 92 | -------------------------------------------------------------------------------- /settings.gradle.kts: -------------------------------------------------------------------------------- 1 | rootProject.name = "the-good-parts" 2 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/DanielAuthenticationProvider.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import java.util.Objects; 4 | 5 | import org.springframework.security.authentication.AuthenticationProvider; 6 | import org.springframework.security.authentication.UsernamePasswordAuthenticationToken; 7 | import org.springframework.security.core.Authentication; 8 | import org.springframework.security.core.AuthenticationException; 9 | import org.springframework.security.core.userdetails.User; 10 | import org.springframework.security.core.userdetails.UserDetails; 11 | 12 | class DanielAuthenticationProvider implements AuthenticationProvider { 13 | @Override 14 | public Authentication authenticate(Authentication authentication) throws AuthenticationException { 15 | var name = authentication.getName(); 16 | if (Objects.equals(name, "daniel")) { 17 | var daniel = User.withUsername("daniel") 18 | .password("default") 19 | .roles("user", "admin") 20 | .build(); 21 | return UsernamePasswordAuthenticationToken.authenticated( 22 | daniel, 23 | null, 24 | daniel.getAuthorities() 25 | ); 26 | } 27 | return null; 28 | } 29 | 30 | @Override 31 | public boolean supports(Class authentication) { 32 | return UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication); 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/ForbiddenFilter.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import java.io.IOException; 4 | import java.nio.charset.StandardCharsets; 5 | import java.util.Objects; 6 | 7 | import jakarta.servlet.FilterChain; 8 | import jakarta.servlet.ServletException; 9 | import jakarta.servlet.http.HttpServletRequest; 10 | import jakarta.servlet.http.HttpServletResponse; 11 | import org.springframework.http.HttpStatus; 12 | import org.springframework.web.filter.OncePerRequestFilter; 13 | 14 | class ForbiddenFilter extends OncePerRequestFilter { 15 | @Override 16 | protected void doFilterInternal( 17 | HttpServletRequest request, 18 | HttpServletResponse response, 19 | FilterChain filterChain 20 | ) throws ServletException, IOException { 21 | if (Objects.equals(request.getHeader("x-forbidden"), "true")) { 22 | response.setStatus(HttpStatus.FORBIDDEN.value()); 23 | response.setCharacterEncoding(StandardCharsets.UTF_8.name()); 24 | response.getWriter().write("That's forbidden. 🚫🚫🚫🚫"); 25 | return; 26 | } 27 | 28 | filterChain.doFilter(request, response); 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/GreetingsController.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import org.springframework.security.core.Authentication; 4 | import org.springframework.security.oauth2.core.oidc.user.OidcUser; 5 | import org.springframework.stereotype.Controller; 6 | import org.springframework.ui.Model; 7 | import org.springframework.web.bind.annotation.GetMapping; 8 | 9 | @Controller 10 | class GreetingsController { 11 | @GetMapping("/") 12 | public String publicPage() { 13 | return "public"; 14 | } 15 | 16 | @GetMapping("/private") 17 | public String privatePage(Model model, Authentication authentication) { 18 | model.addAttribute("name", getName(authentication)); 19 | return "private"; 20 | } 21 | 22 | private static String getName(Authentication authentication) { 23 | if (authentication.getPrincipal() instanceof OidcUser oidcUser) { 24 | return oidcUser.getEmail(); 25 | } 26 | return authentication.getName(); 27 | } 28 | 29 | } 30 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/RobotAccountConfigurer.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import org.springframework.security.authentication.AuthenticationManager; 4 | import org.springframework.security.config.annotation.web.builders.HttpSecurity; 5 | import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer; 6 | import org.springframework.security.web.access.intercept.AuthorizationFilter; 7 | 8 | class RobotAccountConfigurer extends AbstractHttpConfigurer { 9 | @Override 10 | public void init(HttpSecurity http) throws Exception { 11 | http.authenticationProvider( 12 | new RobotAuthenticationProvider() 13 | ); 14 | } 15 | 16 | @Override 17 | public void configure(HttpSecurity http) throws Exception { 18 | var authManager = http.getSharedObject(AuthenticationManager.class); 19 | http.addFilterBefore( 20 | new RobotAuthenticationFilter(authManager), 21 | AuthorizationFilter.class 22 | ); 23 | } 24 | } 25 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/RobotAuthentication.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import java.util.Collection; 4 | 5 | import org.springframework.security.authentication.AbstractAuthenticationToken; 6 | import org.springframework.security.core.GrantedAuthority; 7 | import org.springframework.security.core.authority.AuthorityUtils; 8 | 9 | class RobotAuthentication extends AbstractAuthenticationToken { 10 | private final String password; 11 | 12 | private RobotAuthentication() { 13 | super(AuthorityUtils.createAuthorityList("ROLE_robot")); 14 | super.setAuthenticated(true); 15 | this.password = null; 16 | } 17 | 18 | private RobotAuthentication(String password) { 19 | super(AuthorityUtils.NO_AUTHORITIES); 20 | super.setAuthenticated(false); 21 | this.password = password; 22 | } 23 | 24 | public static RobotAuthentication authenticated() { 25 | return new RobotAuthentication(); 26 | } 27 | 28 | public static RobotAuthentication unauthenticated(String password) { 29 | return new RobotAuthentication(password); 30 | } 31 | 32 | @Override 33 | public Object getCredentials() { 34 | return this.getPassword(); 35 | } 36 | 37 | public String getPassword() { 38 | return this.password; 39 | } 40 | 41 | @Override 42 | public Object getPrincipal() { 43 | return "Ms Robot 🤖"; 44 | } 45 | 46 | @Override 47 | public void setAuthenticated(boolean authenticated) { 48 | throw new RuntimeException("DON'T CHANGE THE AUTH STATUS 😱"); 49 | } 50 | } 51 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/RobotAuthenticationFilter.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import java.io.IOException; 4 | import java.nio.charset.StandardCharsets; 5 | import java.util.Collections; 6 | import java.util.Objects; 7 | 8 | import jakarta.servlet.FilterChain; 9 | import jakarta.servlet.ServletException; 10 | import jakarta.servlet.http.HttpServletRequest; 11 | import jakarta.servlet.http.HttpServletResponse; 12 | import org.springframework.http.HttpStatus; 13 | import org.springframework.security.authentication.AuthenticationManager; 14 | import org.springframework.security.core.Authentication; 15 | import org.springframework.security.core.AuthenticationException; 16 | import org.springframework.security.core.context.SecurityContextHolder; 17 | import org.springframework.security.web.authentication.AuthenticationConverter; 18 | import org.springframework.security.web.authentication.AuthenticationFailureHandler; 19 | import org.springframework.security.web.authentication.AuthenticationFilter; 20 | import org.springframework.security.web.authentication.AuthenticationSuccessHandler; 21 | import org.springframework.web.filter.OncePerRequestFilter; 22 | 23 | class RobotAuthenticationFilter extends AuthenticationFilter { 24 | 25 | private final static String HEADER_NAME = "x-robot-password"; 26 | private static final AuthenticationConverter authenticationConverter = req -> { 27 | if (Collections.list(req.getHeaderNames()).contains(HEADER_NAME)) { 28 | return RobotAuthentication.unauthenticated(req.getHeader(HEADER_NAME)); 29 | } 30 | return null; 31 | }; 32 | 33 | private final AuthenticationFailureHandler failureHandler = (request, response, exception) -> { 34 | response.setStatus(HttpStatus.FORBIDDEN.value()); 35 | response.setCharacterEncoding(StandardCharsets.UTF_8.name()); 36 | response.setContentType("text/plain;charset=utf8"); 37 | response.getWriter().write(exception.getMessage()); 38 | }; 39 | 40 | private final AuthenticationSuccessHandler successHandler = (request, response, authentication) -> { 41 | // noop 42 | }; 43 | 44 | public RobotAuthenticationFilter(AuthenticationManager authenticationManager) { 45 | super(authenticationManager, authenticationConverter); 46 | setFailureHandler(failureHandler); 47 | setSuccessHandler(successHandler); 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/RobotAuthenticationProvider.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import java.util.List; 4 | 5 | import org.springframework.security.authentication.AuthenticationProvider; 6 | import org.springframework.security.authentication.BadCredentialsException; 7 | import org.springframework.security.core.Authentication; 8 | import org.springframework.security.core.AuthenticationException; 9 | 10 | class RobotAuthenticationProvider implements AuthenticationProvider { 11 | 12 | private final List validPasswords = List.of("beep-boop", "boop-beep"); 13 | 14 | @Override 15 | public Authentication authenticate(Authentication authentication) throws AuthenticationException { 16 | var authRequest = (RobotAuthentication) authentication; 17 | if (validPasswords.contains(authRequest.getPassword())) { 18 | return RobotAuthentication.authenticated(); 19 | } 20 | throw new BadCredentialsException("You are not Ms Robot 🤖"); 21 | } 22 | 23 | @Override 24 | public boolean supports(Class authentication) { 25 | return RobotAuthentication.class.isAssignableFrom(authentication); 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/SecurityConfig.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import org.springframework.context.ApplicationListener; 4 | import org.springframework.context.annotation.Bean; 5 | import org.springframework.context.annotation.Configuration; 6 | import org.springframework.security.authentication.event.AuthenticationSuccessEvent; 7 | import org.springframework.security.config.annotation.web.builders.HttpSecurity; 8 | import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; 9 | import org.springframework.security.core.userdetails.User; 10 | import org.springframework.security.core.userdetails.UserDetailsService; 11 | import org.springframework.security.provisioning.InMemoryUserDetailsManager; 12 | import org.springframework.security.web.SecurityFilterChain; 13 | import org.springframework.security.web.access.intercept.AuthorizationFilter; 14 | 15 | import static org.springframework.security.config.Customizer.withDefaults; 16 | 17 | @Configuration 18 | @EnableWebSecurity 19 | class SecurityConfig { 20 | 21 | @Bean 22 | SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception { 23 | return http 24 | .authorizeHttpRequests( 25 | authorizeHttp -> { 26 | authorizeHttp.requestMatchers("/").permitAll(); 27 | authorizeHttp.requestMatchers("/favicon.svg").permitAll(); 28 | authorizeHttp.requestMatchers("/css/*").permitAll(); 29 | authorizeHttp.requestMatchers("/error").permitAll(); 30 | authorizeHttp.anyRequest().authenticated(); 31 | } 32 | ) 33 | .formLogin(withDefaults()) 34 | .oauth2Login(withDefaults()) 35 | .httpBasic(withDefaults()) 36 | .apply(new RobotAccountConfigurer()).and() 37 | .addFilterBefore(new ForbiddenFilter(), AuthorizationFilter.class) 38 | .authenticationProvider(new DanielAuthenticationProvider()) 39 | .build(); 40 | } 41 | 42 | @Bean 43 | UserDetailsService userDetailsService(){ 44 | return new InMemoryUserDetailsManager( 45 | User.withUsername("user") 46 | .password("{noop}password") 47 | .roles("user") 48 | .build() 49 | ); 50 | } 51 | 52 | @Bean 53 | ApplicationListener successListener() { 54 | return event -> { 55 | System.out.println("🎉 [%s] %s".formatted( 56 | event.getAuthentication().getClass().getSimpleName(), 57 | event.getAuthentication().getName() 58 | )); 59 | }; 60 | } 61 | 62 | } 63 | -------------------------------------------------------------------------------- /src/main/java/wf/garnier/spring/security/thegoodparts/TheGoodPartsApplication.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import org.springframework.boot.SpringApplication; 4 | import org.springframework.boot.autoconfigure.SpringBootApplication; 5 | 6 | @SpringBootApplication 7 | public class TheGoodPartsApplication { 8 | 9 | public static void main(String[] args) { 10 | SpringApplication.run(TheGoodPartsApplication.class, args); 11 | } 12 | 13 | } 14 | -------------------------------------------------------------------------------- /src/main/resources/application.yml: -------------------------------------------------------------------------------- 1 | spring: 2 | thymeleaf: 3 | cache: false 4 | security: 5 | oauth2: 6 | client: 7 | registration: 8 | google: 9 | client-id: 10 | client-secret: 11 | server: 12 | servlet: 13 | session: 14 | persistent: false 15 | -------------------------------------------------------------------------------- /src/main/resources/static/css/style.css: -------------------------------------------------------------------------------- 1 | /* keep me */ 2 | body { 3 | font-family: Metropolis, Arial, sans-serif; 4 | display: flex; 5 | flex-direction: column; 6 | align-items: center; 7 | } 8 | 9 | h1 { 10 | border: 4px solid; 11 | padding: 20px; 12 | width: 400px; 13 | text-align: center; 14 | color: #6db33f; 15 | border-radius: 20px; 16 | } 17 | 18 | .btn { 19 | padding: 10px 20px; 20 | border: 2px solid black; 21 | border-radius: 0; 22 | cursor: pointer; 23 | background: transparent; 24 | text-transform: uppercase; 25 | transition: color .2s ease-in-out; 26 | font-weight: bold; 27 | overflow:hidden; 28 | position: relative; 29 | text-decoration: none; 30 | color: black; 31 | 32 | 33 | display: inline-block; 34 | font-size: .9rem; 35 | line-height: 20px; 36 | z-index: 0; 37 | } 38 | .btn:hover { 39 | color: white; 40 | text-decoration: none; 41 | } 42 | 43 | .btn:before { 44 | background-color:black; 45 | bottom:-1px; 46 | content:""; 47 | left:-1px; 48 | position:absolute; 49 | right:-1px; 50 | top:-1px; 51 | -webkit-transform:translateX(-101%); 52 | transform:translateX(-101%); 53 | transition:.2s ease-in-out; 54 | z-index:-1; 55 | } 56 | .btn:before:hover { 57 | color: black; 58 | text-decoration:none; 59 | } 60 | .btn:hover:before { 61 | -webkit-transform:translateX(0); 62 | transform:translateX(0); 63 | } -------------------------------------------------------------------------------- /src/main/resources/static/favicon.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /src/main/resources/templates/private.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 🔐 Private Page [Spring Sec: The Good Parts] 6 | 7 | 8 | 9 | 10 |

VIP section 🥳🎉🎊

11 |

Hello, ~[]~ !

12 |

You are on the very exclusive private page.

13 |

14 |
15 | 16 | 17 |
18 | 19 | -------------------------------------------------------------------------------- /src/main/resources/templates/public.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | ✅ Public Page [Spring Sec: The Good Parts] 6 | 7 | 8 | 9 | 10 |

Hello world!

11 |

This page is totally public.

12 |

13 | Go to private 14 | 15 | -------------------------------------------------------------------------------- /src/test/java/wf/garnier/spring/security/thegoodparts/TheGoodPartsApplicationTests.java: -------------------------------------------------------------------------------- 1 | package wf.garnier.spring.security.thegoodparts; 2 | 3 | import org.junit.jupiter.api.Test; 4 | import org.springframework.boot.test.context.SpringBootTest; 5 | 6 | @SpringBootTest 7 | class TheGoodPartsApplicationTests { 8 | 9 | @Test 10 | void contextLoads() { 11 | } 12 | 13 | } 14 | --------------------------------------------------------------------------------