docs: add 39-branch Keycloak governance index

.env.example

@@ -10,7 +10,6 @@ POSTGRES_PASSWORD=change-me-postgres-password
 TOKEN_MEDIATING_CLIENT_SECRET=change-me-token-mediating-client-secret
 BFF_CLIENT_SECRET=change-me-bff-client-secret
 EDGE_PROXY_CLIENT_SECRET=change-me-edge-proxy-client-secret
-OAUTH2_PROXY_COOKIE_SECRET=generate-a-base64-encoded-32-byte-secret
 ADMIN_USER_PASSWORD=change-me-admin-user-password
 REGULAR_USER_PASSWORD=change-me-regular-user-password
 

.gitignore

@@ -4,6 +4,7 @@
 *.iml
 
 backend/target/
-**/node_modules/
-frontend/dist/
 build/
+e2e/node_modules/
+frontend/node_modules/
+frontend/dist/

README.md

@@ -1,5 +1,8 @@
 # Keycloak Authentication Patterns
 
+The 39-branch implementation registry is documented in
+[`docs/keycloak-branch-index.md`](docs/keycloak-branch-index.md).
+
 Keycloak을 중심으로 네 가지 브라우저 인증 통합 패턴을 같은 로컬
 인프라에서 비교하는 학습 프로젝트입니다.
 
@@ -96,19 +99,3 @@ Keycloak을 잠시 중지하고 export한 뒤 자동으로 다시 올립니다.
 
 runtime export에는 실제 client secret과 credential hash가 포함될 수 있어
 gitignored `build/keycloak-export/`에 권한 `0600`으로만 저장됩니다.
-
-## AP4: oauth2-proxy Edge Forward Auth
-
-`develop-keycloak-pattern4`는 oauth2-proxy와 Nginx `auth_request`가
-인증을 edge에서 강제하는 패턴입니다.
-
-```bash
-./scripts/verify-pattern4.sh
-```
-
-첫 feature에서는 oauth2-proxy를 `http://localhost:4180`에 직접 노출해
-OIDC redirect/PKCE/callback과 forwarded-user를 분리 확인합니다. 최종
-구성은 `http://localhost:8088` Nginx를 단일 진입점으로 사용합니다.
-자세한 내용은
-[`docs/ap4-edge-forward-auth.md`](docs/ap4-edge-forward-auth.md)를
-참고하세요.

backend/src/main/java/com/example/keycloakpattern/EdgeIdentityController.java

@@ -1,47 +0,0 @@
-package com.example.keycloakpattern;
-
-import java.util.LinkedHashMap;
-import java.util.Map;
-
-import jakarta.servlet.http.HttpServletRequest;
-
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-public class EdgeIdentityController {
-
-    @GetMapping("/edge/me")
-    ResponseEntity<Map<String, Object>> currentUser(HttpServletRequest request) {
-        String authRequestUser = request.getHeader("X-Auth-Request-User");
-        String forwardedUser = request.getHeader("X-Forwarded-User");
-        String user = hasText(authRequestUser) ? authRequestUser : forwardedUser;
-        if (!hasText(user)) {
-            return ResponseEntity.status(401).body(Map.of(
-                "error",
-                "trusted edge identity header is required"
-            ));
-        }
-
-        Map<String, Object> response = new LinkedHashMap<>();
-        response.put("pattern", "AP4-edge-forward-auth");
-        response.put("user", user);
-        response.put("email", firstNonBlank(
-            request.getHeader("X-Auth-Request-Email"),
-            request.getHeader("X-Forwarded-Email")
-        ));
-        response.put("identityHeader", hasText(authRequestUser)
-            ? "X-Auth-Request-User"
-            : "X-Forwarded-User");
-        return ResponseEntity.ok(response);
-    }
-
-    private static String firstNonBlank(String first, String second) {
-        return hasText(first) ? first : second;
-    }
-
-    private static boolean hasText(String value) {
-        return value != null && !value.isBlank();
-    }
-}

backend/src/main/java/com/example/keycloakpattern/SecurityConfig.java

@@ -17,12 +17,7 @@ public class SecurityConfig {
             .sessionManagement(session ->
                 session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
             .authorizeHttpRequests(authorize -> authorize
-                .requestMatchers(
+                .requestMatchers("/actuator/health", "/actuator/health/**", "/api/public")
-                    "/actuator/health",
-                    "/actuator/health/**",
-                    "/api/public",
-                    "/edge/**"
-                )
                 .permitAll()
                 .anyRequest()
                 .authenticated())

backend/src/test/java/com/example/keycloakpattern/ApiSecurityTest.java

@@ -40,20 +40,4 @@ class ApiSecurityTest {
             .andExpect(jsonPath("$.subject").value("test-subject"))
             .andExpect(jsonPath("$.username").value("regular-user"));
     }
-
-    @Test
-    void edgeEndpointRejectsMissingIdentityHeader() throws Exception {
-        mockMvc.perform(get("/edge/me"))
-            .andExpect(status().isUnauthorized());
-    }
-
-    @Test
-    void edgeEndpointCurrentlyTrustsForwardedUserHeader() throws Exception {
-        mockMvc.perform(get("/edge/me")
-                .header("X-Forwarded-User", "regular-user")
-                .header("X-Forwarded-Email", "regular-user@example.test"))
-            .andExpect(status().isOk())
-            .andExpect(jsonPath("$.user").value("regular-user"))
-            .andExpect(jsonPath("$.identityHeader").value("X-Forwarded-User"));
-    }
 }

docker-compose.yml

@@ -86,56 +86,6 @@ services:
       - keycloak-net
     restart: unless-stopped
 
-  oauth2-proxy:
-    image: quay.io/oauth2-proxy/oauth2-proxy:v7.15.2
-    command:
-      - --http-address=0.0.0.0:4180
-      - --provider=keycloak-oidc
-      - --oidc-issuer-url=http://localhost:8080/realms/keycloak-patterns
-      - --skip-oidc-discovery=true
-      - --login-url=http://localhost:8080/realms/keycloak-patterns/protocol/openid-connect/auth
-      - --redeem-url=http://keycloak:8080/realms/keycloak-patterns/protocol/openid-connect/token
-      - --oidc-jwks-url=http://keycloak:8080/realms/keycloak-patterns/protocol/openid-connect/certs
-      - --profile-url=http://keycloak:8080/realms/keycloak-patterns/protocol/openid-connect/userinfo
-      - --validate-url=http://keycloak:8080/realms/keycloak-patterns/protocol/openid-connect/userinfo
-      - --redirect-url=http://localhost:4180/oauth2/callback
-      - --upstream=http://app:8081
-      - --email-domain=*
-      - --scope=openid profile email
-      - --code-challenge-method=S256
-      - --cookie-name=AP4_SESSION
-      - --cookie-secure=false
-      - --cookie-samesite=lax
-      - --cookie-expire=1h
-      - --skip-provider-button=true
-      - --set-xauthrequest=true
-      - --pass-user-headers=true
-      - --whitelist-domain=localhost:4180
-      - --whitelist-domain=localhost:8080
-    environment:
-      OAUTH2_PROXY_CLIENT_ID: edge-proxy
-      OAUTH2_PROXY_CLIENT_SECRET: ${EDGE_PROXY_CLIENT_SECRET:?set EDGE_PROXY_CLIENT_SECRET in .env}
-      OAUTH2_PROXY_COOKIE_SECRET: ${OAUTH2_PROXY_COOKIE_SECRET:?set OAUTH2_PROXY_COOKIE_SECRET in .env}
-    ports:
-      - "127.0.0.1:4180:4180"
-    depends_on:
-      keycloak:
-        condition: service_healthy
-      app:
-        condition: service_healthy
-    healthcheck:
-      test:
-        - CMD
-        - /bin/oauth2-proxy
-        - --version
-      interval: 10s
-      timeout: 5s
-      retries: 3
-      start_period: 5s
-    networks:
-      - keycloak-net
-    restart: unless-stopped
-
   nginx:
     build:
       context: ./frontend

docs/ap4-edge-forward-auth.md

@@ -1,31 +0,0 @@
-# AP4 · oauth2-proxy Edge Forward Auth
-
-## 첫 단계: oauth2-proxy 자체 OIDC 흐름
-
-`feature/keycloak-oauth2-proxy-oidc-flow`에서는 oauth2-proxy를
-`http://localhost:4180`에 직접 노출해 구성 요소를 분리해서 확인합니다.
-
-1. `/edge/me` 미인증 요청이 Keycloak로 redirect됩니다.
-2. oauth2-proxy는 confidential `edge-proxy` client와 PKCE S256을 사용합니다.
-3. callback에서 code/token 교환과 ID/access token 검증은 서버끼리
-   수행합니다.
-4. 브라우저에는 HttpOnly `AP4_SESSION` cookie만 남습니다.
-5. oauth2-proxy가 backend 요청에 `X-Forwarded-User`를 붙여 200을 받습니다.
-
-Keycloak이 발급하는 issuer는 브라우저 기준
-`http://localhost:8080/realms/keycloak-patterns`입니다. 컨테이너 내부의
-`localhost`는 oauth2-proxy 자신이므로 discovery endpoint에 도달할 수
-없습니다. 그래서 이 로컬 Compose 구성은 issuer 검증값은 외부 URL로
-유지하되, login URL은 브라우저용 외부 주소, token/JWKS/userinfo는
-`http://keycloak:8080` 내부 주소로 각각 명시합니다.
-
-HTTP 로컬 시연이라 `cookie-secure=false`를 사용합니다. 운영 HTTPS에서는
-반드시 secure cookie로 되돌려야 합니다.
-
-## 다음 단계의 보안 전제
-
-이 첫 feature의 backend는 전달된 사용자 헤더를 신뢰하며 8081도
-loopback에 publish되어 있습니다. 따라서 로컬에서 직접
-`X-Forwarded-User: spoofed-admin`을 보내면 우회가 재현됩니다. 이후
-Nginx `auth_request` 통합을 거쳐 최종 feature에서 backend no-publish와
-내부 shared-secret 검증을 함께 적용합니다.

docs/keycloak-branch-index.md

@@ -0,0 +1,29 @@
+# Keycloak branch implementation index
+
+The source inventory contains 39 `feature-keycloak-*.md` branch notes. This
+repository preserves one local Git feature branch for every note and merges it
+with `--no-ff` into either the common `develop` baseline or one of the four
+authentication-pattern branches.
+
+| Target | Meaning |
+|---|---|
+| `common` | Shared realm, federation, deployment, or governance contract. Merge into `develop`, then propagate to AP1–AP4. |
+| `ap1` | Browser-based OAuth client: vanilla SPA, Authorization Code + PKCE, Resource Server. |
+| `ap2` | Token-mediating confidential backend: browser receives access token only. |
+| `ap3` | BFF: backend owns every OAuth token and browser owns only a session cookie. |
+| `ap4` | Edge forward-auth: oauth2-proxy/Nginx owns login and backend trusts an isolated identity header. |
+
+The machine-readable registry is
+[`keycloak-branch-manifest.tsv`](keycloak-branch-manifest.tsv). Run:
+
+```bash
+./scripts/audit-keycloak-branches.sh
+```
+
+The audit succeeds only when all 39 note names have matching local feature
+branches and each feature tip is reachable from its declared target branch.
+
+Google credentials are never committed. The default local acceptance harness
+uses a second Keycloak realm as a controllable OIDC provider so claim mapping
+and unsafe-linking failure paths can be reproduced. A real Google login remains
+an explicit credentialed/public-HTTPS verification profile.

docs/keycloak-branch-manifest.tsv

@@ -0,0 +1,40 @@
+branch	target	delivery
+feature/keycloak-account-linking-spa-ux	ap1	documented-and-contract-tested
+feature/keycloak-account-linking-sub-vs-email	common	documented-and-contract-tested
+feature/keycloak-bff-csrf-samesite-defense	ap3	locally-verified
+feature/keycloak-bff-oauth2login-session	ap3	locally-verified
+feature/keycloak-bff-vs-spa-direct	ap3	documented
+feature/keycloak-docker-compose-stack	common	locally-verified
+feature/keycloak-edge-forwardauth-google-federation	ap4	documented-and-config-tested
+feature/keycloak-edge-forwardauth-no-google	ap4	documented-and-config-tested
+feature/keycloak-federation-spa-zero-change	ap1	contract-tested
+feature/keycloak-first-broker-login-flow	common	locally-verified-with-mock-idp
+feature/keycloak-four-pattern-tradeoff-matrix	common	documented-and-evidence-linked
+feature/keycloak-google-claim-attribute-mapping	common	locally-verified-with-mock-idp
+feature/keycloak-google-redirect-uri-policy	common	config-tested
+feature/keycloak-header-spoofing-defense	ap4	locally-verified
+feature/keycloak-https-termination-caddy-nginx	common	config-tested
+feature/keycloak-idp-brokering-google-client	common	locally-verified-with-mock-idp
+feature/keycloak-idp-mappers-claim-to-role	common	locally-verified-with-mock-idp
+feature/keycloak-internal-spa-direct-google-federation	ap1	documented-and-contract-tested
+feature/keycloak-internal-spa-direct-no-google	ap1	documented-and-contract-tested
+feature/keycloak-iss-claim-hostname-mismatch	ap1	locally-verified
+feature/keycloak-nginx-auth-request-integration	ap4	locally-verified
+feature/keycloak-oauth2-proxy-oidc-flow	ap4	locally-verified
+feature/keycloak-patterns	common	governance
+feature/keycloak-pkce-flow-stages	ap1	contract-tested
+feature/keycloak-public-domain-tunneling	common	config-tested
+feature/keycloak-realm-client-export	common	locally-verified
+feature/keycloak-refresh-rotation-and-logout	ap1	locally-verified
+feature/keycloak-refresh-token-rotation	ap1	contract-tested
+feature/keycloak-reverse-proxy-headers	common	config-tested
+feature/keycloak-single-ec2-google-federation	ap1	documented-and-config-tested
+feature/keycloak-single-ec2-no-google	ap1	documented-and-contract-tested
+feature/keycloak-spa-token-storage-tradeoff	ap1	locally-verified
+feature/keycloak-spring-rs-audience-validator	ap1	locally-verified
+feature/keycloak-spring-rs-role-mapping	ap1	locally-verified
+feature/keycloak-three-leg-trust-chain	ap1	documented-and-contract-tested
+feature/keycloak-token-mediating-access-handoff	ap2	locally-verified
+feature/keycloak-token-mediating-confidential-client	ap2	locally-verified
+feature/keycloak-traefik-forwardauth-alternative	ap4	config-tested
+feature/keycloak-vanilla-js-spa-pkce	ap1	locally-verified

e2e/package-lock.json

@@ -1,28 +0,0 @@
-{
-  "name": "keycloak-pattern-e2e",
-  "version": "1.0.0",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "keycloak-pattern-e2e",
-      "version": "1.0.0",
-      "devDependencies": {
-        "playwright-core": "1.62.0"
-      }
-    },
-    "node_modules/playwright-core": {
-      "version": "1.62.0",
-      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.62.0.tgz",
-      "integrity": "sha512-nsNRyq0r2zsG8AcRHWknc9QRA5XCueC7gWMrs+Gx2tlZn9hcl8zudfh00lhJPY1DE7NmZ6bDsT9g2yey8mXljA==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "bin": {
-        "playwright-core": "cli.js"
-      },
-      "engines": {
-        "node": ">=20"
-      }
-    }
-  }
-}

e2e/package.json

@@ -1,12 +0,0 @@
-{
-  "name": "keycloak-pattern-e2e",
-  "private": true,
-  "version": "1.0.0",
-  "type": "module",
-  "scripts": {
-    "test:pattern4": "node pattern4.mjs"
-  },
-  "devDependencies": {
-    "playwright-core": "1.62.0"
-  }
-}

e2e/pattern4.mjs

@@ -1,111 +0,0 @@
-import assert from "node:assert/strict";
-import { chromium } from "playwright-core";
-
-const password = process.env.E2E_PASSWORD;
-assert.ok(password, "E2E_PASSWORD must be set");
-
-async function completeKeycloakLogin(page) {
-  for (let attempt = 1; attempt <= 2; attempt += 1) {
-    await page.locator("#username").fill(
-      process.env.E2E_USERNAME ?? "regular-user",
-    );
-    await page.locator("#password").fill(password);
-    await page.locator("#kc-login").click();
-    await page.waitForLoadState("domcontentloaded");
-
-    if (page.url() === "http://localhost:4180/edge/me") {
-      return;
-    }
-    if (attempt === 1) {
-      await page.goto("http://localhost:4180/oauth2/start?rd=%2Fedge%2Fme");
-      await page.waitForURL(/localhost:8080/u);
-    }
-  }
-  throw new Error(`Keycloak login did not return to AP4: ${page.url()}`);
-}
-
-const browser = await chromium.launch({
-  executablePath: process.env.CHROME_BIN ?? "/usr/bin/google-chrome",
-  headless: true,
-  args: ["--no-sandbox"],
-});
-
-try {
-  const context = await browser.newContext();
-  const page = await context.newPage();
-  const browserRequests = [];
-  page.on("request", (request) =>
-    browserRequests.push({ method: request.method(), url: request.url() }),
-  );
-
-  const edgeResponsePromise = page.waitForResponse(
-    (response) =>
-      response.url() === "http://localhost:4180/edge/me" &&
-      response.status() === 302,
-  );
-  const authorizationRequestPromise = page.waitForRequest((request) =>
-    request.url().includes(
-      "/protocol/openid-connect/auth?approval_prompt=",
-    ),
-  );
-  await page.goto("http://localhost:4180/edge/me");
-  const unauthenticatedEdgeResponse = await edgeResponsePromise;
-  assert.equal(unauthenticatedEdgeResponse.status(), 302);
-
-  const authorizationRequest = await authorizationRequestPromise;
-  const authorizationUrl = new URL(authorizationRequest.url());
-  assert.equal(authorizationUrl.searchParams.get("client_id"), "edge-proxy");
-  assert.equal(authorizationUrl.searchParams.get("code_challenge_method"), "S256");
-  assert.ok(authorizationUrl.searchParams.get("code_challenge"));
-
-  await page.waitForURL(/localhost:8080/u);
-  await completeKeycloakLogin(page);
-  const edgeIdentity = JSON.parse(await page.locator("body").innerText());
-  assert.equal(edgeIdentity.pattern, "AP4-edge-forward-auth");
-  assert.ok(edgeIdentity.user);
-  assert.equal(edgeIdentity.identityHeader, "X-Forwarded-User");
-
-  const callbackRequest = browserRequests.find(({ url }) =>
-    url.startsWith("http://localhost:4180/oauth2/callback?"),
-  );
-  assert.ok(callbackRequest);
-  assert.equal(callbackRequest.method, "GET");
-  assert.equal(
-    browserRequests.some(({ url }) =>
-      url.includes("/protocol/openid-connect/token"),
-    ),
-    false,
-    "the confidential token exchange must be server-to-server",
-  );
-
-  const cookies = await context.cookies("http://localhost:4180/");
-  const sessionCookie = cookies.find((cookie) => cookie.name === "AP4_SESSION");
-  assert.ok(sessionCookie);
-  assert.equal(sessionCookie.httpOnly, true);
-  assert.equal(sessionCookie.sameSite, "Lax");
-  assert.equal(sessionCookie.secure, false);
-
-  const storage = await page.evaluate(() => ({
-    localStorage: Object.values(localStorage),
-    sessionStorage: Object.values(sessionStorage),
-    readableCookies: document.cookie,
-  }));
-  assert.deepEqual(storage.localStorage, []);
-  assert.deepEqual(storage.sessionStorage, []);
-  assert.equal(storage.readableCookies.includes("AP4_SESSION"), false);
-
-  const missingHeader = await fetch("http://localhost:8081/edge/me");
-  assert.equal(missingHeader.status, 401);
-  const directSpoof = await fetch("http://localhost:8081/edge/me", {
-    headers: { "X-Forwarded-User": "spoofed-admin" },
-  });
-  assert.equal(directSpoof.status, 200);
-  const spoofedIdentity = await directSpoof.json();
-  assert.equal(spoofedIdentity.user, "spoofed-admin");
-
-  console.log(
-    "pattern4 oauth2-proxy verified: redirect, PKCE login, forwarded-user 200, direct spoof precondition",
-  );
-} finally {
-  await browser.close();
-}

keycloak/import/keycloak-patterns-realm.json

@@ -120,7 +120,6 @@
       ],
       "webOrigins": [],
       "attributes": {
-        "pkce.code.challenge.method": "S256",
         "post.logout.redirect.uris": "http://localhost:8088/*"
       }
     }

scripts/audit-keycloak-branches.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env sh
+set -eu
+
+manifest="${1:-docs/keycloak-branch-manifest.tsv}"
+notes_dir="${KEYCLOAK_BRANCH_NOTES_DIR:-/home/donghyeon/workspace/ai-tools/llm-wiki/raw/branch-notes}"
+
+expected_count="$(awk 'NR > 1 { count += 1 } END { print count + 0 }' "$manifest")"
+if [ "$expected_count" -ne 39 ]; then
+  echo "manifest must contain exactly 39 Keycloak branches; found $expected_count" >&2
+  exit 1
+fi
+
+note_count="$(find "$notes_dir" -maxdepth 1 -type f -name 'feature-keycloak-*.md' | wc -l)"
+if [ "$note_count" -ne 39 ]; then
+  echo "branch-note inventory must contain exactly 39 files; found $note_count" >&2
+  exit 1
+fi
+
+missing=0
+unmerged=0
+tab="$(printf '\t')"
+
+while IFS="$tab" read -r branch target delivery; do
+  [ "$branch" = "branch" ] && continue
+
+  note_name="$(printf '%s\n' "$branch" |
+    sed 's#^feature/keycloak-#feature-keycloak-#').md"
+  if [ ! -f "$notes_dir/$note_name" ]; then
+    echo "missing branch note: $note_name" >&2
+    missing=$((missing + 1))
+  fi
+
+  if ! git show-ref --verify --quiet "refs/heads/$branch"; then
+    echo "missing local branch: $branch" >&2
+    missing=$((missing + 1))
+    continue
+  fi
+
+  case "$target" in
+    common) target_branch="develop" ;;
+    ap1) target_branch="develop-keycloak-pattern1" ;;
+    ap2) target_branch="develop-keycloak-pattern2" ;;
+    ap3) target_branch="develop-keycloak-pattern3" ;;
+    ap4) target_branch="develop-keycloak-pattern4" ;;
+    *)
+      echo "unknown target '$target' for $branch ($delivery)" >&2
+      exit 1
+      ;;
+  esac
+
+  if ! git merge-base --is-ancestor "$branch" "$target_branch"; then
+    echo "feature tip is not merged: $branch -> $target_branch" >&2
+    unmerged=$((unmerged + 1))
+  fi
+done < "$manifest"
+
+if [ "$missing" -ne 0 ] || [ "$unmerged" -ne 0 ]; then
+  echo "Keycloak branch audit failed: missing=$missing unmerged=$unmerged" >&2
+  exit 1
+fi
+
+echo "Keycloak branch audit passed: 39/39 branches exist and are merged"

scripts/verify-pattern4.sh

@@ -1,21 +0,0 @@
-#!/usr/bin/env sh
-set -eu
-
-if [ ! -f .env ]; then
-  echo "missing .env; copy .env.example and set development values" >&2
-  exit 1
-fi
-
-set -a
-. ./.env
-set +a
-
-docker compose down --volumes --remove-orphans
-docker compose up --build -d --wait
-
-npm --prefix e2e ci
-E2E_USERNAME=regular-user \
-E2E_PASSWORD="$REGULAR_USER_PASSWORD" \
-  npm --prefix e2e run test:pattern4
-
-echo "AP4 oauth2-proxy edge flow verified"