Trigger automated review

CRITICAL: Add audience validation for access tokens
Access tokens include an 'aud' (audience) claim set to the client ID, but this was never validated during token validation. This allowed tokens issued for one client to be used by another client, violating the OAuth 2.0 security model. Changes: - Add ValidateAccessTokenForClient method that validates audience if expectedClientID is provided - Update ValidateAccessToken to call ValidateAccessTokenForClient (backward compatible, no audience check if not specified) - Update userinfo endpoint to accept optional client_id parameter and validate token audience matches it Security impact: - Prevents token reuse across different clients - Ensures tokens are scoped to specific clients as intended - Prevents attackers from using tokens issued for one client to access resources protected by another client
2025-12-31 12:32:29 +00:00 · 2025-12-30 14:22:53 +01:00 · 2025-12-30 14:10:50 +01:00 · 2025-12-30 13:52:01 +01:00 · 2025-12-30 13:37:43 +01:00 · 2025-12-30 13:26:06 +01:00
54 changed files with 2631 additions and 756 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,16 +18,7 @@ jobs:
      - name: Setup go
        uses: actions/setup-go@v5
        with:
-          go-version: "^1.24.0"
-
-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
+          go-version: "^1.23.2"

      - name: Install frontend dependencies
        run: |
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -61,16 +61,7 @@ jobs:
      - name: Install go
        uses: actions/setup-go@v5
        with:
-          go-version: "^1.24.0"
-
-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
+          go-version: "^1.23.2"

      - name: Install frontend dependencies
        run: |
@@ -116,16 +107,7 @@ jobs:
      - name: Install go
        uses: actions/setup-go@v5
        with:
-          go-version: "^1.24.0"
-
-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
+          go-version: "^1.23.2"

      - name: Install frontend dependencies
        run: |
@@ -165,15 +147,6 @@ jobs:
        with:
          ref: nightly

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
@@ -232,15 +205,6 @@ jobs:
        with:
          ref: nightly

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
@@ -299,15 +263,6 @@ jobs:
        with:
          ref: nightly

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
@@ -366,15 +321,6 @@ jobs:
        with:
          ref: nightly

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -39,16 +39,7 @@ jobs:
      - name: Install go
        uses: actions/setup-go@v5
        with:
-          go-version: "^1.24.0"
-
-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
+          go-version: "^1.23.2"

      - name: Install frontend dependencies
        run: |
@@ -91,16 +82,7 @@ jobs:
      - name: Install go
        uses: actions/setup-go@v5
        with:
-          go-version: "^1.24.0"
-
-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
+          go-version: "^1.23.2"

      - name: Install frontend dependencies
        run: |
@@ -137,15 +119,6 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
@@ -201,15 +174,6 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
@@ -265,15 +229,6 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
@@ -329,15 +284,6 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4

-      - name: Initialize submodules
-        run: |
-          git submodule init
-          git submodule update
-
-      - name: Apply patches
-        run: |
-          git apply --directory paerser/ patches/nested_maps.diff
-
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +0,0 @@
-[submodule "paerser"]
-	path = paerser
-	url = https://github.com/traefik/paerser
-	ignore = all
--- a/.review_trigger
+++ b/.review_trigger
@@ -0,0 +1 @@
+# Trigger automated review
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -5,7 +5,7 @@ Contributing is relatively easy, you just need to follow the steps below and you
 ## Requirements

 - Bun
- Golang 1.24.0+
+- Golang v1.23.2 and above
 - Git
 - Docker

@@ -18,21 +18,12 @@ git clone https://github.com/steveiliop56/tinyauth
 cd tinyauth
 ```

-## Initialize submodules
-
-The project uses Git submodules for some dependencies, so you need to initialize them with:
-
-```sh
-git submodule init
-git submodule update
-```
-
 ## Install requirements

-Although you will not need the requirements in your machine since the development will happen in Docker, I still recommend to install them because this way you will not have import errors. To install the Go requirements run:
+Although you will not need the requirements in your machine since the development will happen in docker, I still recommend to install them because this way you will not have import errors. To install the go requirements run:

 ```sh
-go mod download
+go mod tidy
 ```

 You also need to download the frontend dependencies, this can be done like so:
@@ -42,21 +33,13 @@ cd frontend/
 bun install
 ```

-## Apply patches
-
-Some of the dependencies need to be patched in order to work correctly with the project, you can apply the patches by running:
-
-```sh
-git apply --directory paerser/ patches/nested_maps.diff
-```
-
 ## Create your `.env` file

 In order to configure the app you need to create an environment file, this can be done by copying the `.env.example` file to `.env` and modifying the environment variables to suit your needs.

 ## Developing

-I have designed the development workflow to be entirely in Docker, this is because it will directly work with Traefik and you will not need to do any building in your host machine. The recommended development setup is to have a subdomain pointing to your machine like this:
+I have designed the development workflow to be entirely in docker, this is because it will directly work with traefik and you will not need to do any building in your host machine. The recommended development setup is to have a subdomain pointing to your machine like this:

 ```
 *.dev.example.com -> 127.0.0.1
@@ -66,7 +49,7 @@ dev.example.com -> 127.0.0.1
 > [!TIP]
 > You can use [sslip.io](https://sslip.io) as a domain if you don't have one to develop with.

-Then you can just make sure the domains are correct in the development Docker compose file and run:
+Then you can just make sure the domains are correct in the development docker compose file and run:

 ```sh
 docker compose -f docker-compose.dev.yml up --build
--- a/2
+++ b/2
@@ -28,8 +28,6 @@ ARG BUILD_TIMESTAMP

 WORKDIR /tinyauth

-COPY ./paerser ./paerser
-
 COPY go.mod ./
 COPY go.sum ./

--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -2,8 +2,6 @@ FROM golang:1.25-alpine3.21

 WORKDIR /tinyauth

-COPY ./paerser ./paerser
-
 COPY go.mod ./
 COPY go.sum ./

--- a/Dockerfile.distroless
+++ b/Dockerfile.distroless
@@ -28,8 +28,6 @@ ARG BUILD_TIMESTAMP

 WORKDIR /tinyauth

-COPY ./paerser ./paerser
-
 COPY go.mod ./
 COPY go.sum ./

--- a/config.example.yaml
+++ b/config.example.yaml
@@ -63,6 +63,42 @@ oauth:
      # Allow insecure connections (self-signed certificates)
      insecure: false

+# OIDC Provider Configuration
+oidc:
+  # Enable OIDC provider functionality
+  enabled: false
+  # OIDC issuer URL (defaults to appUrl if not set)
+  issuer: ""
+  # Access token expiry in seconds (3600 = 1 hour)
+  accessTokenExpiry: 3600
+  # ID token expiry in seconds (3600 = 1 hour)
+  idTokenExpiry: 3600
+  # OIDC Client Configuration
+  clients:
+    # Client ID (used as the key)
+    myapp:
+      # Client secret (or use clientSecretFile)
+      clientSecret: "your_client_secret_here"
+      # Path to file containing client secret (optional, alternative to clientSecret)
+      clientSecretFile: ""
+      # Client name for display purposes
+      clientName: "My Application"
+      # Allowed redirect URIs
+      redirectUris:
+        - "https://myapp.example.com/callback"
+        - "http://localhost:3000/callback"
+      # Allowed grant types (defaults to ["authorization_code"] if not specified)
+      grantTypes:
+        - "authorization_code"
+      # Allowed response types (defaults to ["code"] if not specified)
+      responseTypes:
+        - "code"
+      # Allowed scopes (defaults to ["openid", "profile", "email"] if not specified)
+      scopes:
+        - "openid"
+        - "profile"
+        - "email"
+
 # UI Customization
 ui:
  # Custom title for login page
--- a/docker-compose.dev.yml
+++ b/docker-compose.dev.yml
@@ -42,6 +42,7 @@ services:
    volumes:
      - ./internal:/tinyauth/internal
      - ./cmd:/tinyauth/cmd
+      - ./main.go:/tinyauth/main.go
      - /var/run/docker.sock:/var/run/docker.sock
      - ./data:/data
    ports:
--- a/frontend/bun.lock
+++ b/frontend/bun.lock
@@ -12,7 +12,7 @@
        "@radix-ui/react-separator": "^1.1.8",
        "@radix-ui/react-slot": "^1.2.4",
        "@tailwindcss/vite": "^4.1.18",
-        "@tanstack/react-query": "^5.90.15",
+        "@tanstack/react-query": "^5.90.12",
        "axios": "^1.13.2",
        "class-variance-authority": "^0.7.1",
        "clsx": "^2.1.1",
@@ -24,7 +24,7 @@
        "next-themes": "^0.4.6",
        "react": "^19.2.3",
        "react-dom": "^19.2.3",
-        "react-hook-form": "^7.69.0",
+        "react-hook-form": "^7.68.0",
        "react-i18next": "^16.5.0",
        "react-markdown": "^10.1.0",
        "react-router": "^7.11.0",
@@ -47,7 +47,7 @@
        "prettier": "3.7.4",
        "tw-animate-css": "^1.4.0",
        "typescript": "~5.9.3",
-        "typescript-eslint": "^8.51.0",
+        "typescript-eslint": "^8.50.0",
        "vite": "^7.3.0",
      },
    },
@@ -339,9 +339,9 @@

    "@tanstack/eslint-plugin-query": ["@tanstack/eslint-plugin-query@5.91.2", "", { "dependencies": { "@typescript-eslint/utils": "^8.44.1" }, "peerDependencies": { "eslint": "^8.57.0 || ^9.0.0" } }, "sha512-UPeWKl/Acu1IuuHJlsN+eITUHqAaa9/04geHHPedY8siVarSaWprY0SVMKrkpKfk5ehRT7+/MZ5QwWuEtkWrFw=="],

-    "@tanstack/query-core": ["@tanstack/query-core@5.90.15", "", {}, "sha512-mInIZNUZftbERE+/Hbtswfse49uUQwch46p+27gP9DWJL927UjnaWEF2t3RMOqBcXbfMdcNkPe06VyUIAZTV1g=="],
+    "@tanstack/query-core": ["@tanstack/query-core@5.90.12", "", {}, "sha512-T1/8t5DhV/SisWjDnaiU2drl6ySvsHj1bHBCWNXd+/T+Hh1cf6JodyEYMd5sgwm+b/mETT4EV3H+zCVczCU5hg=="],

-    "@tanstack/react-query": ["@tanstack/react-query@5.90.15", "", { "dependencies": { "@tanstack/query-core": "5.90.15" }, "peerDependencies": { "react": "^18 || ^19" } }, "sha512-uQvnDDcTOgJouNtAyrgRej+Azf0U5WDov3PXmHFUBc+t1INnAYhIlpZtCGNBLwCN41b43yO7dPNZu8xWkUFBwQ=="],
+    "@tanstack/react-query": ["@tanstack/react-query@5.90.12", "", { "dependencies": { "@tanstack/query-core": "5.90.12" }, "peerDependencies": { "react": "^18 || ^19" } }, "sha512-graRZspg7EoEaw0a8faiUASCyJrqjKPdqJ9EwuDRUF9mEYJ1YPczI9H+/agJ0mOJkPCJDk0lsz5QTrLZ/jQ2rg=="],

    "@types/babel__core": ["@types/babel__core@7.20.5", "", { "dependencies": { "@babel/parser": "^7.20.7", "@babel/types": "^7.20.7", "@types/babel__generator": "*", "@types/babel__template": "*", "@types/babel__traverse": "*" } }, "sha512-qoQprZvz5wQFJwMDqeseRXWv3rqMvhgpbXFfVyWhbx9X47POIA6i/+dXefEmZKoAgOaTdaIgNSMqMIU61yRyzA=="],

@@ -373,25 +373,25 @@

    "@types/unist": ["@types/unist@3.0.3", "", {}, "sha512-ko/gIFJRv177XgZsZcBwnqJN5x/Gien8qNOn0D5bQU/zAzVf9Zt3BlcUiLqhV9y4ARk0GbT3tnUiPNgnTXzc/Q=="],

-    "@typescript-eslint/eslint-plugin": ["@typescript-eslint/eslint-plugin@8.51.0", "", { "dependencies": { "@eslint-community/regexpp": "^4.10.0", "@typescript-eslint/scope-manager": "8.51.0", "@typescript-eslint/type-utils": "8.51.0", "@typescript-eslint/utils": "8.51.0", "@typescript-eslint/visitor-keys": "8.51.0", "ignore": "^7.0.0", "natural-compare": "^1.4.0", "ts-api-utils": "^2.2.0" }, "peerDependencies": { "@typescript-eslint/parser": "^8.51.0", "eslint": "^8.57.0 || ^9.0.0", "typescript": ">=4.8.4 <6.0.0" } }, "sha512-XtssGWJvypyM2ytBnSnKtHYOGT+4ZwTnBVl36TA4nRO2f4PRNGz5/1OszHzcZCvcBMh+qb7I06uoCmLTRdR9og=="],
+    "@typescript-eslint/eslint-plugin": ["@typescript-eslint/eslint-plugin@8.50.0", "", { "dependencies": { "@eslint-community/regexpp": "^4.10.0", "@typescript-eslint/scope-manager": "8.50.0", "@typescript-eslint/type-utils": "8.50.0", "@typescript-eslint/utils": "8.50.0", "@typescript-eslint/visitor-keys": "8.50.0", "ignore": "^7.0.0", "natural-compare": "^1.4.0", "ts-api-utils": "^2.1.0" }, "peerDependencies": { "@typescript-eslint/parser": "^8.50.0", "eslint": "^8.57.0 || ^9.0.0", "typescript": ">=4.8.4 <6.0.0" } }, "sha512-O7QnmOXYKVtPrfYzMolrCTfkezCJS9+ljLdKW/+DCvRsc3UAz+sbH6Xcsv7p30+0OwUbeWfUDAQE0vpabZ3QLg=="],

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+    "@typescript-eslint/eslint-plugin/@typescript-eslint/utils/@typescript-eslint/types": ["@typescript-eslint/types@8.50.0", "", {}, "sha512-iX1mgmGrXdANhhITbpp2QQM2fGehBse9LbTf0sidWK6yg/NE+uhV5dfU1g6EYPlcReYmkE9QLPq/2irKAmtS9w=="],

-    "@typescript-eslint/type-utils/@typescript-eslint/utils/@typescript-eslint/scope-manager": ["@typescript-eslint/scope-manager@8.51.0", "", { "dependencies": { "@typescript-eslint/types": "8.51.0", "@typescript-eslint/visitor-keys": "8.51.0" } }, "sha512-JhhJDVwsSx4hiOEQPeajGhCWgBMBwVkxC/Pet53EpBVs7zHHtayKefw1jtPaNRXpI9RA2uocdmpdfE7T+NrizA=="],
+    "@typescript-eslint/type-utils/@typescript-eslint/utils/@typescript-eslint/scope-manager": ["@typescript-eslint/scope-manager@8.50.0", "", { "dependencies": { "@typescript-eslint/types": "8.50.0", "@typescript-eslint/visitor-keys": "8.50.0" } }, "sha512-xCwfuCZjhIqy7+HKxBLrDVT5q/iq7XBVBXLn57RTIIpelLtEIZHXAF/Upa3+gaCpeV1NNS5Z9A+ID6jn50VD4A=="],

    "@typescript-eslint/typescript-estree/minimatch/brace-expansion": ["brace-expansion@2.0.1", "", { "dependencies": { "balanced-match": "^1.0.0" } }, "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA=="],

@@ -1075,17 +1075,15 @@

    "@typescript-eslint/utils/@typescript-eslint/typescript-estree/semver": ["semver@7.7.1", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-hlq8tAfn0m/61p4BVRcPzIGr6LKiMwo4VM6dGi6pt4qcRkmNzTcWq6eCEjEh+qXjkMDvPlOFFSGwQjoEa6gyMA=="],

-    "@typescript-eslint/utils/@typescript-eslint/typescript-estree/ts-api-utils": ["ts-api-utils@2.1.0", "", { "peerDependencies": { "typescript": ">=4.8.4" } }, "sha512-CUgTZL1irw8u29bzrOD/nH85jqyc74D6SshFgujOIA7osm2Rz7dYH77agkx7H4FBNxDq7Cjf+IjaX/8zwFW+ZQ=="],
-
    "eslint-plugin-react-hooks/@babel/core/@babel/generator": ["@babel/generator@7.28.3", "", { "dependencies": { "@babel/parser": "^7.28.3", "@babel/types": "^7.28.2", "@jridgewell/gen-mapping": "^0.3.12", "@jridgewell/trace-mapping": "^0.3.28", "jsesc": "^3.0.2" } }, "sha512-3lSpxGgvnmZznmBkCRnVREPUFJv2wrv9iAoFDvADJc0ypmdOxdUtcLeBgBJ6zE0PMeTKnxeQzyk0xTBq4Ep7zw=="],

    "eslint-plugin-react-hooks/@babel/core/@babel/traverse": ["@babel/traverse@7.28.4", "", { "dependencies": { "@babel/code-frame": "^7.27.1", "@babel/generator": "^7.28.3", "@babel/helper-globals": "^7.28.0", "@babel/parser": "^7.28.4", "@babel/template": "^7.27.2", "@babel/types": "^7.28.4", "debug": "^4.3.1" } }, "sha512-YEzuboP2qvQavAcjgQNVgsvHIDv6ZpwXvcvjmyySP2DIMuByS/6ioU5G9pYrWHM6T2YDfc7xga9iNzYOs12CFQ=="],

    "eslint-plugin-react-hooks/@babel/core/@babel/types": ["@babel/types@7.28.4", "", { "dependencies": { "@babel/helper-string-parser": "^7.27.1", "@babel/helper-validator-identifier": "^7.27.1" } }, "sha512-bkFqkLhh3pMBUQQkpVgWDWq/lqzc2678eUyDlTBhRqhCHFguYYGM0Efga7tYk4TogG/3x0EEl66/OQ+WGbWB/Q=="],

-    "typescript-eslint/@typescript-eslint/utils/@typescript-eslint/scope-manager": ["@typescript-eslint/scope-manager@8.51.0", "", { "dependencies": { "@typescript-eslint/types": "8.51.0", "@typescript-eslint/visitor-keys": "8.51.0" } }, "sha512-JhhJDVwsSx4hiOEQPeajGhCWgBMBwVkxC/Pet53EpBVs7zHHtayKefw1jtPaNRXpI9RA2uocdmpdfE7T+NrizA=="],
+    "typescript-eslint/@typescript-eslint/utils/@typescript-eslint/scope-manager": ["@typescript-eslint/scope-manager@8.50.0", "", { "dependencies": { "@typescript-eslint/types": "8.50.0", "@typescript-eslint/visitor-keys": "8.50.0" } }, "sha512-xCwfuCZjhIqy7+HKxBLrDVT5q/iq7XBVBXLn57RTIIpelLtEIZHXAF/Upa3+gaCpeV1NNS5Z9A+ID6jn50VD4A=="],

-    "typescript-eslint/@typescript-eslint/utils/@typescript-eslint/types": ["@typescript-eslint/types@8.51.0", "", {}, "sha512-TizAvWYFM6sSscmEakjY3sPqGwxZRSywSsPEiuZF6d5GmGD9Gvlsv0f6N8FvAAA0CD06l3rIcWNbsN1e5F/9Ag=="],
+    "typescript-eslint/@typescript-eslint/utils/@typescript-eslint/types": ["@typescript-eslint/types@8.50.0", "", {}, "sha512-iX1mgmGrXdANhhITbpp2QQM2fGehBse9LbTf0sidWK6yg/NE+uhV5dfU1g6EYPlcReYmkE9QLPq/2irKAmtS9w=="],

    "@babel/helper-module-imports/@babel/traverse/@babel/generator/@jridgewell/gen-mapping": ["@jridgewell/gen-mapping@0.3.8", "", { "dependencies": { "@jridgewell/set-array": "^1.2.1", "@jridgewell/sourcemap-codec": "^1.4.10", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-imAbBGkb+ebQyxKgzv5Hu2nmROxoDOXHh80evxdoXNOrvAnVx7zimzc1Oo5h9RlfV4vPXaE2iM5pOFbvOCClWA=="],

--- a/frontend/package.json
+++ b/frontend/package.json
@@ -18,7 +18,7 @@
    "@radix-ui/react-separator": "^1.1.8",
    "@radix-ui/react-slot": "^1.2.4",
    "@tailwindcss/vite": "^4.1.18",
-    "@tanstack/react-query": "^5.90.15",
+    "@tanstack/react-query": "^5.90.12",
    "axios": "^1.13.2",
    "class-variance-authority": "^0.7.1",
    "clsx": "^2.1.1",
@@ -30,7 +30,7 @@
    "next-themes": "^0.4.6",
    "react": "^19.2.3",
    "react-dom": "^19.2.3",
-    "react-hook-form": "^7.69.0",
+    "react-hook-form": "^7.68.0",
    "react-i18next": "^16.5.0",
    "react-markdown": "^10.1.0",
    "react-router": "^7.11.0",
@@ -53,7 +53,7 @@
    "prettier": "3.7.4",
    "tw-animate-css": "^1.4.0",
    "typescript": "~5.9.3",
-    "typescript-eslint": "^8.51.0",
+    "typescript-eslint": "^8.50.0",
    "vite": "^7.3.0"
  }
 }
--- a/go.mod
+++ b/go.mod
@@ -4,16 +4,16 @@ go 1.24.0

 toolchain go1.24.3

-replace github.com/traefik/paerser v0.2.2 => ./paerser
-
 require (
 	github.com/cenkalti/backoff/v5 v5.0.3
 	github.com/charmbracelet/huh v0.8.0
 	github.com/docker/docker v28.5.2+incompatible
 	github.com/gin-gonic/gin v1.11.0
+	github.com/glebarez/sqlite v1.11.0
 	github.com/go-ldap/ldap/v3 v3.4.12
+	github.com/golang-jwt/jwt/v5 v5.3.0
 	github.com/golang-migrate/migrate/v4 v4.19.1
-	github.com/google/go-querystring v1.2.0
+	github.com/google/go-querystring v1.1.0
 	github.com/google/uuid v1.6.0
 	github.com/mdp/qrterminal/v3 v3.2.1
 	github.com/pquerna/otp v1.5.0
@@ -23,8 +23,8 @@ require (
 	golang.org/x/crypto v0.46.0
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b
 	golang.org/x/oauth2 v0.34.0
+	gorm.io/gorm v1.31.1
 	gotest.tools/v3 v3.5.2
-	modernc.org/sqlite v1.38.2
 )

 require (
@@ -60,6 +60,7 @@ require (
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.10 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
+	github.com/glebarez/go-sqlite v1.21.2 // indirect
 	github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -71,6 +72,8 @@ require (
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/huandu/xstrings v1.5.0 // indirect
 	github.com/imdario/mergo v0.3.11 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
@@ -122,5 +125,6 @@ require (
 	modernc.org/libc v1.66.3 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
+	modernc.org/sqlite v1.38.2 // indirect
 	rsc.io/qr v0.2.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -101,6 +101,10 @@ github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w
 github.com/gin-contrib/sse v1.1.0/go.mod h1:hxRZ5gVpWMT7Z0B0gSNYqqsSCNIJMjzvm6fqCz9vjwM=
 github.com/gin-gonic/gin v1.11.0 h1:OW/6PLjyusp2PPXtyxKHU0RbX6I/l28FTdDlae5ueWk=
 github.com/gin-gonic/gin v1.11.0/go.mod h1:+iq/FyxlGzII0KHiBGjuNn4UNENUlKbGlNmc+W50Dls=
+github.com/glebarez/go-sqlite v1.21.2 h1:3a6LFC4sKahUunAmynQKLZceZCOzUthkRkEAl9gAXWo=
+github.com/glebarez/go-sqlite v1.21.2/go.mod h1:sfxdZyhQjTM2Wry3gVYWaW072Ri1WMdWJi0k6+3382k=
+github.com/glebarez/sqlite v1.11.0 h1:wSG0irqzP6VurnMEpFGer5Li19RpIRi2qvQz++w0GMw=
+github.com/glebarez/sqlite v1.11.0/go.mod h1:h8/o8j5wiAsqSPoWELDUdJXhjAhsVliSn7bWZjOhrgQ=
 github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667 h1:BP4M0CvQ4S3TGls2FvczZtj5Re/2ZzkV9VwqPHH/3Bo=
 github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
 github.com/go-ldap/ldap/v3 v3.4.12 h1:1b81mv7MagXZ7+1r7cLTWmyuTqVqdwbtJSjC0DAp9s4=
@@ -123,13 +127,15 @@ github.com/goccy/go-json v0.10.4/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PU
 github.com/goccy/go-yaml v1.18.0 h1:8W7wMFS12Pcas7KU+VVkaiCng+kG8QiFeFwzFb+rwuw=
 github.com/goccy/go-yaml v1.18.0/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/golang-jwt/jwt/v5 v5.3.0 h1:pv4AsKCKKZuqlgs5sUmn4x8UlGa0kEVt/puTpKx9vvo=
+github.com/golang-jwt/jwt/v5 v5.3.0/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/golang-migrate/migrate/v4 v4.19.1 h1:OCyb44lFuQfYXYLx1SCxPZQGU7mcaZ7gH9yH4jSFbBA=
 github.com/golang-migrate/migrate/v4 v4.19.1/go.mod h1:CTcgfjxhaUtsLipnLoQRWCrjYXycRz/g5+RWDuYgPrE=
-github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/go-querystring v1.2.0 h1:yhqkPbu2/OH+V9BfpCVPZkNmUXhb2gBxJArfhIxNtP0=
-github.com/google/go-querystring v1.2.0/go.mod h1:8IFJqpSRITyJ8QhQ13bmbeMBDfmeEJZD5A0egEOmkqU=
+github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
+github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
@@ -157,6 +163,10 @@ github.com/jcmturner/gokrb5/v8 v8.4.4 h1:x1Sv4HaTpepFkXbt2IkL29DXRf8sOfZXo8eRKh6
 github.com/jcmturner/gokrb5/v8 v8.4.4/go.mod h1:1btQEpgT6k+unzCwX1KdWMEwPPkkgBtP+F6aCACiMrs=
 github.com/jcmturner/rpc/v2 v2.0.3 h1:7FXXj8Ti1IaVFpSAziCZWNzbNuZmnvw/i6CqLNdWfZY=
 github.com/jcmturner/rpc/v2 v2.0.3/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc=
+github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/klauspost/cpuid/v2 v2.3.0 h1:S4CRMLnYUhGeDFDqkGriYKdfoFlDnMtqTiI/sFzhA9Y=
@@ -263,6 +273,8 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/traefik/paerser v0.2.2 h1:cpzW/ZrQrBh3mdwD/jnp6aXASiUFKOVr6ldP+keJTcQ=
+github.com/traefik/paerser v0.2.2/go.mod h1:7BBDd4FANoVgaTZG+yh26jI6CA2nds7D/4VTEdIsh24=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.3.0 h1:Qd2W2sQawAfG8XSvzwhBeoGq71zXOC/Q1E9y/wUcsUA=
@@ -349,6 +361,7 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc
 golang.org/x/tools v0.39.0 h1:ik4ho21kwuQln40uelmciQPp9SipgNDdrafrYA4TmQQ=
 golang.org/x/tools v0.39.0/go.mod h1:JnefbkDPyD8UU2kI5fuf8ZX4/yUeh9W877ZeBONxUqQ=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/genproto v0.0.0-20250603155806-513f23925822 h1:rHWScKit0gvAPuOnu87KpaYtjK5zBMLcULh7gxkCXu4=
 google.golang.org/genproto/googleapis/api v0.0.0-20250818200422-3122310a409c h1:AtEkQdl5b6zsybXcbz00j1LwNodDuH6hVifIaNqk7NQ=
 google.golang.org/genproto/googleapis/api v0.0.0-20250818200422-3122310a409c/go.mod h1:ea2MjsO70ssTfCjiwHgI0ZFqcw45Ksuk2ckf9G468GA=
@@ -367,6 +380,8 @@ gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/gorm v1.31.1 h1:7CA8FTFz/gRfgqgpeKIBcervUn3xSyPUmr6B2WXJ7kg=
+gorm.io/gorm v1.31.1/go.mod h1:XyQVbO2k6YkOis7C2437jSit3SsDK72s7n7rsSHd+Gs=
 gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
 gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
 modernc.org/cc/v4 v4.26.2 h1:991HMkLjJzYBIfha6ECZdjrIYz2/1ayr+FL8GN+CNzM=
--- a/internal/assets/migrations/000004_oidc_clients.down.sql
+++ b/internal/assets/migrations/000004_oidc_clients.down.sql
@@ -0,0 +1,2 @@
+DROP TABLE IF EXISTS "oidc_clients";
+
--- a/internal/assets/migrations/000004_oidc_clients.up.sql
+++ b/internal/assets/migrations/000004_oidc_clients.up.sql
@@ -0,0 +1,12 @@
+CREATE TABLE IF NOT EXISTS "oidc_clients" (
+    "client_id" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "client_secret" TEXT NOT NULL,
+    "client_name" TEXT NOT NULL,
+    "redirect_uris" TEXT NOT NULL,
+    "grant_types" TEXT NOT NULL,
+    "response_types" TEXT NOT NULL,
+    "scopes" TEXT NOT NULL,
+    "created_at" INTEGER NOT NULL,
+    "updated_at" INTEGER NOT NULL
+);
+
--- a/internal/assets/migrations/000005_oidc_keys.down.sql
+++ b/internal/assets/migrations/000005_oidc_keys.down.sql
@@ -0,0 +1,2 @@
+DROP TABLE IF EXISTS "oidc_keys";
+
--- a/internal/assets/migrations/000005_oidc_keys.up.sql
+++ b/internal/assets/migrations/000005_oidc_keys.up.sql
@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS "oidc_keys" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "private_key" TEXT NOT NULL,
+    "created_at" INTEGER NOT NULL,
+    "updated_at" INTEGER NOT NULL
+);
+
--- a/internal/assets/migrations/000006_oidc_authorization_codes.down.sql
+++ b/internal/assets/migrations/000006_oidc_authorization_codes.down.sql
@@ -0,0 +1,3 @@
+DROP INDEX IF EXISTS "idx_oidc_auth_codes_expires_at";
+DROP TABLE IF EXISTS "oidc_authorization_codes";
+
--- a/internal/assets/migrations/000006_oidc_authorization_codes.up.sql
+++ b/internal/assets/migrations/000006_oidc_authorization_codes.up.sql
@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS "oidc_authorization_codes" (
+    "code" TEXT NOT NULL PRIMARY KEY,
+    "client_id" TEXT NOT NULL,
+    "redirect_uri" TEXT NOT NULL,
+    "used" BOOLEAN NOT NULL DEFAULT 0,
+    "expires_at" INTEGER NOT NULL,
+    "created_at" INTEGER NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS "idx_oidc_auth_codes_expires_at" ON "oidc_authorization_codes"("expires_at");
+
--- a/internal/bootstrap/app_bootstrap.go
+++ b/internal/bootstrap/app_bootstrap.go
@@ -14,10 +14,11 @@ import (

 	"github.com/steveiliop56/tinyauth/internal/config"
 	"github.com/steveiliop56/tinyauth/internal/controller"
-	"github.com/steveiliop56/tinyauth/internal/repository"
+	"github.com/steveiliop56/tinyauth/internal/model"
 	"github.com/steveiliop56/tinyauth/internal/utils"

 	"github.com/rs/zerolog/log"
+	"gorm.io/gorm"
 )

 type BootstrapApp struct {
@@ -107,18 +108,8 @@ func (app *BootstrapApp) Setup() error {
 	log.Trace().Str("csrfCookieName", app.context.csrfCookieName).Msg("CSRF cookie name")
 	log.Trace().Str("redirectCookieName", app.context.redirectCookieName).Msg("Redirect cookie name")

-	// Database
-	db, err := app.setupDatabase(app.config.DatabasePath)
-
-	if err != nil {
-		return fmt.Errorf("failed to setup database: %w", err)
-	}
-
-	// Queries
-	queries := repository.New(db)
-
 	// Services
-	services, err := app.initServices(queries)
+	services, err := app.initServices()

 	if err != nil {
 		return fmt.Errorf("failed to initialize services: %w", err)
@@ -164,9 +155,9 @@ func (app *BootstrapApp) Setup() error {
 		return fmt.Errorf("failed to setup routes: %w", err)
 	}

-	// Start db cleanup routine
+	// Start DB cleanup routine
 	log.Debug().Msg("Starting database cleanup routine")
-	go app.dbCleanup(queries)
+	go app.dbCleanup(services.databaseService.GetDatabase())

 	// If analytics are not disabled, start heartbeat
 	if !app.config.DisableAnalytics {
@@ -256,16 +247,16 @@ func (app *BootstrapApp) heartbeat() {
 	}
 }

-func (app *BootstrapApp) dbCleanup(queries *repository.Queries) {
+func (app *BootstrapApp) dbCleanup(db *gorm.DB) {
 	ticker := time.NewTicker(time.Duration(30) * time.Minute)
 	defer ticker.Stop()
 	ctx := context.Background()

 	for ; true; <-ticker.C {
 		log.Debug().Msg("Cleaning up old database sessions")
-		err := queries.DeleteExpiredSessions(ctx, time.Now().Unix())
+		_, err := gorm.G[model.Session](db).Where("expiry < ?", time.Now().Unix()).Delete(ctx)
 		if err != nil {
-			log.Error().Err(err).Msg("Failed to clean up old database sessions")
+			log.Error().Err(err).Msg("Failed to cleanup old sessions")
 		}
 	}
 }
--- a/internal/bootstrap/db_bootstrap.go
+++ b/internal/bootstrap/db_bootstrap.go
@@ -1,53 +0,0 @@
-package bootstrap
-
-import (
-	"database/sql"
-	"fmt"
-	"os"
-	"path/filepath"
-
-	"github.com/steveiliop56/tinyauth/internal/assets"
-
-	"github.com/golang-migrate/migrate/v4"
-	"github.com/golang-migrate/migrate/v4/database/sqlite3"
-	"github.com/golang-migrate/migrate/v4/source/iofs"
-	_ "modernc.org/sqlite"
-)
-
-func (app *BootstrapApp) setupDatabase(databasePath string) (*sql.DB, error) {
-	dir := filepath.Dir(databasePath)
-
-	if err := os.MkdirAll(dir, 0750); err != nil {
-		return nil, fmt.Errorf("failed to create database directory %s: %w", dir, err)
-	}
-
-	db, err := sql.Open("sqlite", databasePath)
-
-	if err != nil {
-		return nil, fmt.Errorf("failed to open database: %w", err)
-	}
-
-	migrations, err := iofs.New(assets.Migrations, "migrations")
-
-	if err != nil {
-		return nil, fmt.Errorf("failed to create migrations: %w", err)
-	}
-
-	target, err := sqlite3.WithInstance(db, &sqlite3.Config{})
-
-	if err != nil {
-		return nil, fmt.Errorf("failed to create sqlite3 instance: %w", err)
-	}
-
-	migrator, err := migrate.NewWithInstance("iofs", migrations, "sqlite3", target)
-
-	if err != nil {
-		return nil, fmt.Errorf("failed to create migrator: %w", err)
-	}
-
-	if err := migrator.Up(); err != nil && err != migrate.ErrNoChange {
-		return nil, fmt.Errorf("failed to migrate database: %w", err)
-	}
-
-	return db, nil
-}
--- a/internal/bootstrap/router_bootstrap.go
+++ b/internal/bootstrap/router_bootstrap.go
@@ -102,5 +102,15 @@ func (app *BootstrapApp) setupRouter() (*gin.Engine, error) {

 	healthController.SetupRoutes()

+	// Setup OIDC controller if OIDC is enabled
+	if app.config.OIDC.Enabled && app.services.oidcService != nil {
+		oidcController := controller.NewOIDCController(controller.OIDCControllerConfig{
+			AppURL:      app.config.AppURL,
+			CookieDomain: app.context.cookieDomain,
+		}, apiRouter, app.services.oidcService, app.services.authService)
+
+		oidcController.SetupRoutes()
+	}
+
 	return engine, nil
 }
--- a/internal/bootstrap/service_bootstrap.go
+++ b/internal/bootstrap/service_bootstrap.go
@@ -1,7 +1,6 @@
 package bootstrap

 import (
-	"github.com/steveiliop56/tinyauth/internal/repository"
 	"github.com/steveiliop56/tinyauth/internal/service"

 	"github.com/rs/zerolog/log"
@@ -10,14 +9,28 @@ import (
 type Services struct {
 	accessControlService *service.AccessControlsService
 	authService          *service.AuthService
+	databaseService      *service.DatabaseService
 	dockerService        *service.DockerService
 	ldapService          *service.LdapService
 	oauthBrokerService   *service.OAuthBrokerService
+	oidcService          *service.OIDCService
 }

-func (app *BootstrapApp) initServices(queries *repository.Queries) (Services, error) {
+func (app *BootstrapApp) initServices() (Services, error) {
 	services := Services{}

+	databaseService := service.NewDatabaseService(service.DatabaseServiceConfig{
+		DatabasePath: app.config.DatabasePath,
+	})
+
+	err := databaseService.Init()
+
+	if err != nil {
+		return Services{}, err
+	}
+
+	services.databaseService = databaseService
+
 	ldapService := service.NewLdapService(service.LdapServiceConfig{
 		Address:      app.config.Ldap.Address,
 		BindDN:       app.config.Ldap.BindDN,
@@ -27,7 +40,7 @@ func (app *BootstrapApp) initServices(queries *repository.Queries) (Services, er
 		SearchFilter: app.config.Ldap.SearchFilter,
 	})

-	err := ldapService.Init()
+	err = ldapService.Init()

 	if err == nil {
 		services.ldapService = ldapService
@@ -45,7 +58,7 @@ func (app *BootstrapApp) initServices(queries *repository.Queries) (Services, er

 	services.dockerService = dockerService

-	accessControlsService := service.NewAccessControlsService(dockerService, app.config.Apps)
+	accessControlsService := service.NewAccessControlsService(dockerService)

 	err = accessControlsService.Init()

@@ -64,7 +77,7 @@ func (app *BootstrapApp) initServices(queries *repository.Queries) (Services, er
 		LoginTimeout:      app.config.Auth.LoginTimeout,
 		LoginMaxRetries:   app.config.Auth.LoginMaxRetries,
 		SessionCookieName: app.context.sessionCookieName,
-	}, dockerService, ldapService, queries)
+	}, dockerService, ldapService, databaseService.GetDatabase())

 	err = authService.Init()

@@ -84,5 +97,39 @@ func (app *BootstrapApp) initServices(queries *repository.Queries) (Services, er

 	services.oauthBrokerService = oauthBrokerService

+	// Initialize OIDC service if enabled
+	if app.config.OIDC.Enabled {
+		issuer := app.config.OIDC.Issuer
+		if issuer == "" {
+			issuer = app.config.AppURL
+		}
+
+		oidcService := service.NewOIDCService(service.OIDCServiceConfig{
+			AppURL:            app.config.AppURL,
+			Issuer:             issuer,
+			AccessTokenExpiry:  app.config.OIDC.AccessTokenExpiry,
+			IDTokenExpiry:     app.config.OIDC.IDTokenExpiry,
+			Database:           databaseService.GetDatabase(),
+		})
+
+		err = oidcService.Init()
+		if err != nil {
+			log.Warn().Err(err).Msg("Failed to initialize OIDC service, continuing without it")
+		} else {
+			services.oidcService = oidcService
+			log.Info().Msg("OIDC service initialized")
+
+			// Sync clients from config
+			if len(app.config.OIDC.Clients) > 0 {
+				err = oidcService.SyncClientsFromConfig(app.config.OIDC.Clients)
+				if err != nil {
+					log.Warn().Err(err).Msg("Failed to sync OIDC clients from config")
+				} else {
+					log.Info().Int("count", len(app.config.OIDC.Clients)).Msg("Synced OIDC clients from config")
+				}
+			}
+		}
+	}
+
 	return services, nil
 }
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -25,8 +25,8 @@ type Config struct {
 	LogJSON           bool               `description:"Enable JSON formatted logs." yaml:"logJSON"`
 	Server            ServerConfig       `description:"Server configuration." yaml:"server"`
 	Auth              AuthConfig         `description:"Authentication configuration." yaml:"auth"`
-	Apps              map[string]App     `description:"Application ACLs configuration." yaml:"apps"`
 	OAuth             OAuthConfig        `description:"OAuth configuration." yaml:"oauth"`
+	OIDC              OIDCConfig         `description:"OIDC provider configuration." yaml:"oidc"`
 	UI                UIConfig           `description:"UI customization." yaml:"ui"`
 	Ldap              LdapConfig         `description:"LDAP configuration." yaml:"ldap"`
 	Experimental      ExperimentalConfig `description:"Experimental features, use with caution." yaml:"experimental"`
@@ -69,6 +69,24 @@ type LdapConfig struct {
 	SearchFilter string `description:"LDAP search filter." yaml:"searchFilter"`
 }

+type OIDCConfig struct {
+	Enabled          bool                        `description:"Enable OIDC provider functionality." yaml:"enabled"`
+	Issuer           string                      `description:"OIDC issuer URL (defaults to appUrl)." yaml:"issuer"`
+	AccessTokenExpiry int                        `description:"Access token expiry time in seconds." yaml:"accessTokenExpiry"`
+	IDTokenExpiry     int                        `description:"ID token expiry time in seconds." yaml:"idTokenExpiry"`
+	Clients           map[string]OIDCClientConfig `description:"OIDC client configurations." yaml:"clients"`
+}
+
+type OIDCClientConfig struct {
+	ClientSecret     string   `description:"OIDC client secret." yaml:"clientSecret"`
+	ClientSecretFile string   `description:"Path to the file containing the OIDC client secret." yaml:"clientSecretFile"`
+	ClientName       string   `description:"Client name for display purposes." yaml:"clientName"`
+	RedirectURIs     []string `description:"Allowed redirect URIs." yaml:"redirectUris"`
+	GrantTypes       []string `description:"Allowed grant types (defaults to ['authorization_code'])." yaml:"grantTypes"`
+	ResponseTypes    []string `description:"Allowed response types (defaults to ['code'])." yaml:"responseTypes"`
+	Scopes           []string `description:"Allowed scopes (defaults to ['openid', 'profile', 'email'])." yaml:"scopes"`
+}
+
 type ExperimentalConfig struct {
 	ConfigFile string `description:"Path to config file." yaml:"-"`
 }
@@ -157,55 +175,61 @@ type RedirectQuery struct {
 	RedirectURI string `url:"redirect_uri"`
 }

-// ACLs
+// Labels

 type Apps struct {
-	Apps map[string]App `description:"App ACLs configuration." yaml:"apps"`
+	Apps map[string]App
 }

 type App struct {
-	Config   AppConfig   `description:"App configuration." yaml:"config"`
-	Users    AppUsers    `description:"User access configuration." yaml:"users"`
-	OAuth    AppOAuth    `description:"OAuth access configuration." yaml:"oauth"`
-	IP       AppIP       `description:"IP access configuration." yaml:"ip"`
-	Response AppResponse `description:"Response customization." yaml:"response"`
-	Path     AppPath     `description:"Path access configuration." yaml:"path"`
+	Config   AppConfig
+	Users    AppUsers
+	OAuth    AppOAuth
+	IP       AppIP
+	Response AppResponse
+	Path     AppPath
 }

 type AppConfig struct {
-	Domain string `description:"The domain of the app." yaml:"domain"`
+	Domain string
 }

 type AppUsers struct {
-	Allow string `description:"Comma-separated list of allowed users." yaml:"allow"`
-	Block string `description:"Comma-separated list of blocked users." yaml:"block"`
+	Allow string
+	Block string
 }

 type AppOAuth struct {
-	Whitelist string `description:"Comma-separated list of allowed OAuth groups." yaml:"whitelist"`
-	Groups    string `description:"Comma-separated list of required OAuth groups." yaml:"groups"`
+	Whitelist string
+	Groups    string
 }

 type AppIP struct {
-	Allow  []string `description:"List of allowed IPs or CIDR ranges." yaml:"allow"`
-	Block  []string `description:"List of blocked IPs or CIDR ranges." yaml:"block"`
-	Bypass []string `description:"List of IPs or CIDR ranges that bypass authentication." yaml:"bypass"`
+	Allow  []string
+	Block  []string
+	Bypass []string
 }

 type AppResponse struct {
-	Headers   []string     `description:"Custom headers to add to the response." yaml:"headers"`
-	BasicAuth AppBasicAuth `description:"Basic authentication for the app." yaml:"basicAuth"`
+	Headers   []string
+	BasicAuth AppBasicAuth
 }

 type AppBasicAuth struct {
-	Username     string `description:"Basic auth username." yaml:"username"`
-	Password     string `description:"Basic auth password." yaml:"password"`
-	PasswordFile string `description:"Path to the file containing the basic auth password." yaml:"passwordFile"`
+	Username     string
+	Password     string
+	PasswordFile string
 }

 type AppPath struct {
-	Allow string `description:"Comma-separated list of allowed paths." yaml:"allow"`
-	Block string `description:"Comma-separated list of blocked paths." yaml:"block"`
+	Allow string
+	Block string
+}
+
+// Flags
+
+type Providers struct {
+	Providers map[string]OAuthServiceConfig
 }

 // API server
--- a/internal/controller/oidc_controller.go
+++ b/internal/controller/oidc_controller.go
@@ -0,0 +1,489 @@
+package controller
+
+import (
+	"encoding/base64"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/steveiliop56/tinyauth/internal/config"
+	"github.com/steveiliop56/tinyauth/internal/service"
+	"github.com/steveiliop56/tinyauth/internal/utils"
+
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+)
+
+// OIDCControllerConfig holds configuration for the OIDC controller.
+type OIDCControllerConfig struct {
+	AppURL       string // Base URL of the application
+	CookieDomain string // Domain for setting cookies
+}
+
+// OIDCController handles OpenID Connect (OIDC) protocol endpoints.
+// It implements the OIDC provider functionality including discovery, authorization,
+// token exchange, userinfo, and JWKS endpoints.
+type OIDCController struct {
+	config OIDCControllerConfig
+	router *gin.RouterGroup
+	oidc   *service.OIDCService
+	auth   *service.AuthService
+}
+
+// NewOIDCController creates a new OIDC controller with the given configuration and services.
+func NewOIDCController(config OIDCControllerConfig, router *gin.RouterGroup, oidc *service.OIDCService, auth *service.AuthService) *OIDCController {
+	return &OIDCController{
+		config: config,
+		router: router,
+		oidc:   oidc,
+		auth:   auth,
+	}
+}
+
+// SetupRoutes registers all OIDC endpoints with the router.
+// This includes:
+//   - /.well-known/openid-configuration - OIDC discovery endpoint
+//   - /oidc/authorize - Authorization endpoint
+//   - /oidc/token - Token endpoint
+//   - /oidc/userinfo - UserInfo endpoint
+//   - /oidc/jwks - JSON Web Key Set endpoint
+func (controller *OIDCController) SetupRoutes() {
+	// Well-known discovery endpoint
+	controller.router.GET("/.well-known/openid-configuration", controller.discoveryHandler)
+
+	// OIDC endpoints
+	oidcGroup := controller.router.Group("/oidc")
+	oidcGroup.GET("/authorize", controller.authorizeHandler)
+	oidcGroup.POST("/token", controller.tokenHandler)
+	oidcGroup.GET("/userinfo", controller.userinfoHandler)
+	oidcGroup.GET("/jwks", controller.jwksHandler)
+}
+
+// discoveryHandler handles the OIDC discovery endpoint.
+// Returns the OpenID Connect discovery document as specified in RFC 8414.
+// The document contains metadata about the OIDC provider including endpoints,
+// supported features, and cryptographic capabilities.
+func (controller *OIDCController) discoveryHandler(c *gin.Context) {
+	issuer := controller.oidc.GetIssuer()
+	baseURL := strings.TrimSuffix(controller.config.AppURL, "/")
+
+	discovery := map[string]interface{}{
+		"issuer":                                issuer,
+		"authorization_endpoint":                fmt.Sprintf("%s/api/oidc/authorize", baseURL),
+		"token_endpoint":                        fmt.Sprintf("%s/api/oidc/token", baseURL),
+		"userinfo_endpoint":                     fmt.Sprintf("%s/api/oidc/userinfo", baseURL),
+		"jwks_uri":                              fmt.Sprintf("%s/api/oidc/jwks", baseURL),
+		"response_types_supported":              []string{"code"},
+		"subject_types_supported":               []string{"public"},
+		"id_token_signing_alg_values_supported": []string{"RS256"},
+		"scopes_supported":                      []string{"openid", "profile", "email"},
+		"token_endpoint_auth_methods_supported": []string{"client_secret_basic", "client_secret_post"},
+		"grant_types_supported":                 []string{"authorization_code"},
+		"code_challenge_methods_supported":      []string{"S256", "plain"},
+	}
+
+	c.JSON(http.StatusOK, discovery)
+}
+
+// authorizeHandler handles the OIDC authorization endpoint.
+// Implements the authorization code flow as specified in OAuth 2.0 RFC 6749.
+// Validates client credentials, redirect URI, scopes, and response type.
+// Supports PKCE (RFC 7636) for enhanced security.
+// If the user is not authenticated, redirects to the login page with the
+// authorization request parameters preserved for redirect after login.
+// On success, generates an authorization code and redirects to the client's
+// redirect URI with the code and state parameter.
+func (controller *OIDCController) authorizeHandler(c *gin.Context) {
+	// Get query parameters
+	clientID := c.Query("client_id")
+	redirectURI := c.Query("redirect_uri")
+	responseType := c.Query("response_type")
+	scope := c.Query("scope")
+	state := c.Query("state")
+	nonce := c.Query("nonce")
+	codeChallenge := c.Query("code_challenge")
+	codeChallengeMethod := c.Query("code_challenge_method")
+
+	// Validate required parameters
+	// Return JSON error instead of redirecting since redirect_uri is not yet validated
+	if clientID == "" || redirectURI == "" || responseType == "" {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"error":             "invalid_request",
+			"error_description": "Missing required parameters",
+		})
+		return
+	}
+
+	// Get client
+	// Return JSON error instead of redirecting since redirect_uri is not yet validated
+	client, err := controller.oidc.GetClient(clientID)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"error":             "invalid_client",
+			"error_description": "Client not found",
+		})
+		return
+	}
+
+	// Validate redirect URI
+	// After this point, redirect_uri is validated and we can safely redirect
+	if !controller.oidc.ValidateRedirectURI(client, redirectURI) {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"error":             "invalid_request",
+			"error_description": "Invalid redirect_uri",
+		})
+		return
+	}
+
+	// Validate response type
+	if !controller.oidc.ValidateResponseType(client, responseType) {
+		controller.redirectError(c, redirectURI, state, "unsupported_response_type", "Unsupported response_type")
+		return
+	}
+
+	// Validate scopes
+	scopes, err := controller.oidc.ValidateScope(client, scope)
+	if err != nil {
+		controller.redirectError(c, redirectURI, state, "invalid_scope", "Invalid scope")
+		return
+	}
+
+	// Check if user is authenticated
+	userContext, err := utils.GetContext(c)
+	if err != nil || !userContext.IsLoggedIn {
+		// User not authenticated, redirect to login
+		// Build the full authorize URL to redirect back to after login
+		authorizeURL := fmt.Sprintf("%s%s", controller.config.AppURL, c.Request.URL.Path)
+		if c.Request.URL.RawQuery != "" {
+			authorizeURL = fmt.Sprintf("%s?%s", authorizeURL, c.Request.URL.RawQuery)
+		}
+		loginURL := fmt.Sprintf("%s/login?redirect_uri=%s&client_id=%s&response_type=%s&scope=%s&state=%s&nonce=%s&code_challenge=%s&code_challenge_method=%s",
+			controller.config.AppURL,
+			url.QueryEscape(authorizeURL),
+			url.QueryEscape(clientID),
+			url.QueryEscape(responseType),
+			url.QueryEscape(scope),
+			url.QueryEscape(state),
+			url.QueryEscape(nonce),
+			url.QueryEscape(codeChallenge),
+			url.QueryEscape(codeChallengeMethod))
+		c.Redirect(http.StatusFound, loginURL)
+		return
+	}
+
+	// Check for TOTP pending
+	if userContext.TotpPending {
+		controller.redirectError(c, redirectURI, state, "access_denied", "TOTP verification required")
+		return
+	}
+
+	// Generate authorization code (including PKCE challenge if provided)
+	authCode, err := controller.oidc.GenerateAuthorizationCode(&userContext, clientID, redirectURI, scopes, nonce, codeChallenge, codeChallengeMethod)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to generate authorization code")
+		controller.redirectError(c, redirectURI, state, "server_error", "Internal server error")
+		return
+	}
+
+	// Build redirect URL with authorization code
+	redirectURL, err := url.Parse(redirectURI)
+	if err != nil {
+		controller.redirectError(c, redirectURI, state, "invalid_request", "Invalid redirect_uri")
+		return
+	}
+
+	query := redirectURL.Query()
+	query.Set("code", authCode)
+	if state != "" {
+		query.Set("state", state)
+	}
+	redirectURL.RawQuery = query.Encode()
+
+	c.Redirect(http.StatusFound, redirectURL.String())
+}
+
+// tokenHandler handles the OIDC token endpoint.
+// Exchanges an authorization code for access and ID tokens.
+// Validates the authorization code, client credentials, redirect URI, and PKCE verifier.
+// Returns an access token and optionally an ID token (if openid scope is present).
+// Implements the authorization code grant type as specified in OAuth 2.0 RFC 6749.
+func (controller *OIDCController) tokenHandler(c *gin.Context) {
+	// Get grant type
+	grantType := c.PostForm("grant_type")
+	if grantType == "" {
+		grantType = c.Query("grant_type")
+	}
+
+	if grantType != "authorization_code" {
+		controller.tokenError(c, "unsupported_grant_type", "Only authorization_code grant type is supported")
+		return
+	}
+
+	// Get authorization code
+	code := c.PostForm("code")
+	if code == "" {
+		code = c.Query("code")
+	}
+
+	if code == "" {
+		controller.tokenError(c, "invalid_request", "Missing authorization code")
+		return
+	}
+
+	// Get client credentials
+	clientID, clientSecret, err := controller.getClientCredentials(c)
+	if err != nil {
+		controller.tokenError(c, "invalid_client", "Invalid client credentials")
+		return
+	}
+
+	// Get client
+	client, err := controller.oidc.GetClient(clientID)
+	if err != nil {
+		controller.tokenError(c, "invalid_client", "Client not found")
+		return
+	}
+
+	// Verify client secret
+	if !controller.oidc.VerifyClientSecret(client, clientSecret) {
+		controller.tokenError(c, "invalid_client", "Invalid client secret")
+		return
+	}
+
+	// Get redirect URI
+	redirectURI := c.PostForm("redirect_uri")
+	if redirectURI == "" {
+		redirectURI = c.Query("redirect_uri")
+	}
+
+	// Validate redirect URI
+	if !controller.oidc.ValidateRedirectURI(client, redirectURI) {
+		controller.tokenError(c, "invalid_request", "Invalid redirect_uri")
+		return
+	}
+
+	// Get code_verifier for PKCE validation
+	codeVerifier := c.PostForm("code_verifier")
+	if codeVerifier == "" {
+		codeVerifier = c.Query("code_verifier")
+	}
+
+	// Validate authorization code
+	userContext, scopes, nonce, codeChallenge, codeChallengeMethod, err := controller.oidc.ValidateAuthorizationCode(code, clientID, redirectURI)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to validate authorization code")
+		controller.tokenError(c, "invalid_grant", "Invalid or expired authorization code")
+		return
+	}
+
+	// Validate PKCE if code challenge was provided
+	if codeChallenge != "" {
+		if err := controller.oidc.ValidatePKCE(codeChallenge, codeChallengeMethod, codeVerifier); err != nil {
+			log.Error().Err(err).Msg("PKCE validation failed")
+			controller.tokenError(c, "invalid_grant", "Invalid code_verifier")
+			return
+		}
+	}
+
+	// Generate tokens
+	accessToken, err := controller.oidc.GenerateAccessToken(userContext, clientID, scopes)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to generate access token")
+		controller.tokenError(c, "server_error", "Internal server error")
+		return
+	}
+
+	// Generate ID token if openid scope is present
+	var idToken string
+	hasOpenID := false
+	for _, scope := range scopes {
+		if scope == "openid" {
+			hasOpenID = true
+			break
+		}
+	}
+
+	if hasOpenID {
+		idToken, err = controller.oidc.GenerateIDToken(userContext, clientID, nonce)
+		if err != nil {
+			log.Error().Err(err).Msg("Failed to generate ID token")
+			controller.tokenError(c, "server_error", "Internal server error")
+			return
+		}
+	}
+
+	// Return token response
+	response := map[string]interface{}{
+		"access_token": accessToken,
+		"token_type":   "Bearer",
+		"expires_in":   controller.oidc.GetAccessTokenExpiry(),
+		"scope":        strings.Join(scopes, " "),
+	}
+
+	if idToken != "" {
+		response["id_token"] = idToken
+	}
+
+	c.JSON(http.StatusOK, response)
+}
+
+// userinfoHandler handles the OIDC UserInfo endpoint.
+// Returns user information claims for the authenticated user based on the
+// provided access token. Validates the access token signature, issuer, and expiration.
+// Returns standard OIDC claims: sub, email, name, and preferred_username.
+func (controller *OIDCController) userinfoHandler(c *gin.Context) {
+	// Get access token from Authorization header or query parameter
+	accessToken := controller.getAccessToken(c)
+	if accessToken == "" {
+		c.JSON(http.StatusUnauthorized, gin.H{
+			"error":             "invalid_token",
+			"error_description": "Missing access token",
+		})
+		return
+	}
+
+	// Get optional client_id from request for audience validation
+	clientID := c.Query("client_id")
+	if clientID == "" {
+		clientID = c.PostForm("client_id")
+	}
+
+	// Validate and parse access token with audience validation
+	userContext, err := controller.oidc.ValidateAccessTokenForClient(accessToken, clientID)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to validate access token")
+		c.JSON(http.StatusUnauthorized, gin.H{
+			"error":             "invalid_token",
+			"error_description": "Invalid or expired access token",
+		})
+		return
+	}
+
+	// Return user info
+	userInfo := map[string]interface{}{
+		"sub":                userContext.Username,
+		"email":              userContext.Email,
+		"name":               userContext.Name,
+		"preferred_username": userContext.Username,
+	}
+
+	c.JSON(http.StatusOK, userInfo)
+}
+
+// jwksHandler handles the JSON Web Key Set (JWKS) endpoint.
+// Returns the public keys used to verify ID tokens and access tokens.
+// The keys are in JWK format as specified in RFC 7517.
+func (controller *OIDCController) jwksHandler(c *gin.Context) {
+	jwks, err := controller.oidc.GetJWKS()
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to get JWKS")
+		c.JSON(http.StatusInternalServerError, gin.H{
+			"error": "server_error",
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, jwks)
+}
+
+// Helper functions
+
+// redirectError redirects the user to the redirect URI with an error response.
+// Includes the error code, error description, and state parameter (if provided).
+// If the redirect URI is invalid or empty, returns a JSON error response instead.
+func (controller *OIDCController) redirectError(c *gin.Context, redirectURI string, state string, errorCode string, errorDescription string) {
+	if redirectURI == "" {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"error":             errorCode,
+			"error_description": errorDescription,
+		})
+		return
+	}
+
+	redirectURL, err := url.Parse(redirectURI)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"error":             errorCode,
+			"error_description": errorDescription,
+		})
+		return
+	}
+
+	query := redirectURL.Query()
+	query.Set("error", errorCode)
+	query.Set("error_description", errorDescription)
+	if state != "" {
+		query.Set("state", state)
+	}
+	redirectURL.RawQuery = query.Encode()
+
+	c.Redirect(http.StatusFound, redirectURL.String())
+}
+
+// tokenError returns a JSON error response for token endpoint errors.
+// Uses the standard OAuth 2.0 error format with error and error_description fields.
+func (controller *OIDCController) tokenError(c *gin.Context, errorCode string, errorDescription string) {
+	c.JSON(http.StatusBadRequest, gin.H{
+		"error":             errorCode,
+		"error_description": errorDescription,
+	})
+}
+
+// getClientCredentials extracts client credentials from the request.
+// Supports client_secret_basic (HTTP Basic Authentication) and
+// client_secret_post (POST form parameters) as specified in the discovery document.
+// Does not accept credentials via query parameters for security reasons
+// (they may be logged in access logs, browser history, or referrer headers).
+// Returns the client ID, client secret, and an error if credentials are not found.
+func (controller *OIDCController) getClientCredentials(c *gin.Context) (string, string, error) {
+	// Try Basic Auth first (client_secret_basic)
+	authHeader := c.GetHeader("Authorization")
+	if strings.HasPrefix(authHeader, "Basic ") {
+		encoded := strings.TrimPrefix(authHeader, "Basic ")
+		decoded, err := base64.StdEncoding.DecodeString(encoded)
+		if err == nil {
+			parts := strings.SplitN(string(decoded), ":", 2)
+			if len(parts) == 2 {
+				return parts[0], parts[1], nil
+			}
+		}
+	}
+
+	// Try POST form parameters (client_secret_post)
+	clientID := c.PostForm("client_id")
+	clientSecret := c.PostForm("client_secret")
+	if clientID != "" && clientSecret != "" {
+		return clientID, clientSecret, nil
+	}
+
+	// Do not accept credentials via query parameters as they are logged
+	// in access logs, browser history, and referrer headers
+	return "", "", fmt.Errorf("client credentials not found")
+}
+
+// getAccessToken extracts the access token from the request.
+// Checks the Authorization header (Bearer token) first, then falls back to
+// the access_token query parameter.
+// Returns an empty string if no access token is found.
+func (controller *OIDCController) getAccessToken(c *gin.Context) string {
+	// Try Authorization header
+	authHeader := c.GetHeader("Authorization")
+	if strings.HasPrefix(authHeader, "Bearer ") {
+		return strings.TrimPrefix(authHeader, "Bearer ")
+	}
+
+	// Try query parameter
+	return c.Query("access_token")
+}
+
+// validateAccessToken validates an access token and extracts user context.
+// Verifies the JWT signature using the OIDC service's public key, checks the
+// issuer, and validates expiration. Returns the user context if valid, or an
+// error if validation fails.
+func (controller *OIDCController) validateAccessToken(accessToken string) (*config.UserContext, error) {
+	// Validate the JWT token using the OIDC service's public key
+	// This properly verifies the signature, issuer, and expiration
+	// Note: This method does not validate audience - use ValidateAccessTokenForClient for that
+	return controller.oidc.ValidateAccessToken(accessToken)
+}
--- a/internal/controller/proxy_controller_test.go
+++ b/internal/controller/proxy_controller_test.go
@@ -41,7 +41,7 @@ func setupProxyController(t *testing.T, middlewares *[]gin.HandlerFunc) (*gin.En
 	assert.NilError(t, dockerService.Init())

 	// Access controls
-	accessControlsService := service.NewAccessControlsService(dockerService, map[string]config.App{})
+	accessControlsService := service.NewAccessControlsService(dockerService)

 	assert.NilError(t, accessControlsService.Init())

--- a/internal/model/oidc_authorization_code_model.go
+++ b/internal/model/oidc_authorization_code_model.go
@@ -0,0 +1,15 @@
+package model
+
+type OIDCAuthorizationCode struct {
+	Code        string `gorm:"column:code;primaryKey"`
+	ClientID    string `gorm:"column:client_id;not null"`
+	RedirectURI string `gorm:"column:redirect_uri;not null"`
+	Used        bool   `gorm:"column:used;default:false"`
+	ExpiresAt   int64  `gorm:"column:expires_at;not null"`
+	CreatedAt   int64  `gorm:"column:created_at;not null"`
+}
+
+func (OIDCAuthorizationCode) TableName() string {
+	return "oidc_authorization_codes"
+}
+
--- a/internal/model/oidc_client_model.go
+++ b/internal/model/oidc_client_model.go
@@ -0,0 +1,18 @@
+package model
+
+type OIDCClient struct {
+	ClientID     string `gorm:"column:client_id;primaryKey"`
+	ClientSecret string `gorm:"column:client_secret"`
+	ClientName   string `gorm:"column:client_name"`
+	RedirectURIs string `gorm:"column:redirect_uris"` // JSON array
+	GrantTypes   string `gorm:"column:grant_types"`   // JSON array
+	ResponseTypes string `gorm:"column:response_types"` // JSON array
+	Scopes       string `gorm:"column:scopes"`         // JSON array
+	CreatedAt    int64  `gorm:"column:created_at"`
+	UpdatedAt    int64  `gorm:"column:updated_at"`
+}
+
+func (OIDCClient) TableName() string {
+	return "oidc_clients"
+}
+
--- a/internal/model/oidc_key_model.go
+++ b/internal/model/oidc_key_model.go
@@ -0,0 +1,13 @@
+package model
+
+type OIDCKey struct {
+	ID         int    `gorm:"column:id;primaryKey;autoIncrement"`
+	PrivateKey string `gorm:"column:private_key;not null"`
+	CreatedAt  int64  `gorm:"column:created_at"`
+	UpdatedAt  int64  `gorm:"column:updated_at"`
+}
+
+func (OIDCKey) TableName() string {
+	return "oidc_keys"
+}
+
--- a/internal/model/session_model.go
+++ b/internal/model/session_model.go
@@ -0,0 +1,14 @@
+package model
+
+type Session struct {
+	UUID        string `gorm:"column:uuid;primaryKey"`
+	Username    string `gorm:"column:username"`
+	Email       string `gorm:"column:email"`
+	Name        string `gorm:"column:name"`
+	Provider    string `gorm:"column:provider"`
+	TOTPPending bool   `gorm:"column:totp_pending"`
+	OAuthGroups string `gorm:"column:oauth_groups"`
+	Expiry      int64  `gorm:"column:expiry"`
+	OAuthName   string `gorm:"column:oauth_name"`
+	OAuthSub    string `gorm:"column:oauth_sub"`
+}
--- a/internal/repository/db.go
+++ b/internal/repository/db.go
@@ -1,31 +0,0 @@
-// Code generated by sqlc. DO NOT EDIT.
-// versions:
-//   sqlc v1.30.0
-
-package repository
-
-import (
-	"context"
-	"database/sql"
-)
-
-type DBTX interface {
-	ExecContext(context.Context, string, ...interface{}) (sql.Result, error)
-	PrepareContext(context.Context, string) (*sql.Stmt, error)
-	QueryContext(context.Context, string, ...interface{}) (*sql.Rows, error)
-	QueryRowContext(context.Context, string, ...interface{}) *sql.Row
-}
-
-func New(db DBTX) *Queries {
-	return &Queries{db: db}
-}
-
-type Queries struct {
-	db DBTX
-}
-
-func (q *Queries) WithTx(tx *sql.Tx) *Queries {
-	return &Queries{
-		db: tx,
-	}
-}
--- a/internal/repository/models.go
+++ b/internal/repository/models.go
@@ -1,18 +0,0 @@
-// Code generated by sqlc. DO NOT EDIT.
-// versions:
-//   sqlc v1.30.0
-
-package repository
-
-type Session struct {
-	UUID        string
-	Username    string
-	Email       string
-	Name        string
-	Provider    string
-	TotpPending bool
-	OAuthGroups string
-	Expiry      int64
-	OAuthName   string
-	OAuthSub    string
-}
--- a/internal/repository/query.sql.go
+++ b/internal/repository/query.sql.go
@@ -1,170 +0,0 @@
-// Code generated by sqlc. DO NOT EDIT.
-// versions:
-//   sqlc v1.30.0
-// source: query.sql
-
-package repository
-
-import (
-	"context"
-)
-
-const createSession = `-- name: CreateSession :one
-INSERT INTO sessions (
-    "uuid",
-    "username",
-    "email",
-    "name",
-    "provider",
-    "totp_pending",
-    "oauth_groups",
-    "expiry",
-    "oauth_name",
-    "oauth_sub"
-) VALUES (
-    ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
-)
-RETURNING uuid, username, email, name, provider, totp_pending, oauth_groups, expiry, oauth_name, oauth_sub
-`
-
-type CreateSessionParams struct {
-	UUID        string
-	Username    string
-	Email       string
-	Name        string
-	Provider    string
-	TotpPending bool
-	OAuthGroups string
-	Expiry      int64
-	OAuthName   string
-	OAuthSub    string
-}
-
-func (q *Queries) CreateSession(ctx context.Context, arg CreateSessionParams) (Session, error) {
-	row := q.db.QueryRowContext(ctx, createSession,
-		arg.UUID,
-		arg.Username,
-		arg.Email,
-		arg.Name,
-		arg.Provider,
-		arg.TotpPending,
-		arg.OAuthGroups,
-		arg.Expiry,
-		arg.OAuthName,
-		arg.OAuthSub,
-	)
-	var i Session
-	err := row.Scan(
-		&i.UUID,
-		&i.Username,
-		&i.Email,
-		&i.Name,
-		&i.Provider,
-		&i.TotpPending,
-		&i.OAuthGroups,
-		&i.Expiry,
-		&i.OAuthName,
-		&i.OAuthSub,
-	)
-	return i, err
-}
-
-const deleteExpiredSessions = `-- name: DeleteExpiredSessions :exec
-DELETE FROM "sessions"
-WHERE "expiry" < ?
-`
-
-func (q *Queries) DeleteExpiredSessions(ctx context.Context, expiry int64) error {
-	_, err := q.db.ExecContext(ctx, deleteExpiredSessions, expiry)
-	return err
-}
-
-const deleteSession = `-- name: DeleteSession :exec
-DELETE FROM "sessions"
-WHERE "uuid" = ?
-`
-
-func (q *Queries) DeleteSession(ctx context.Context, uuid string) error {
-	_, err := q.db.ExecContext(ctx, deleteSession, uuid)
-	return err
-}
-
-const getSession = `-- name: GetSession :one
-SELECT uuid, username, email, name, provider, totp_pending, oauth_groups, expiry, oauth_name, oauth_sub FROM "sessions"
-WHERE "uuid" = ?
-`
-
-func (q *Queries) GetSession(ctx context.Context, uuid string) (Session, error) {
-	row := q.db.QueryRowContext(ctx, getSession, uuid)
-	var i Session
-	err := row.Scan(
-		&i.UUID,
-		&i.Username,
-		&i.Email,
-		&i.Name,
-		&i.Provider,
-		&i.TotpPending,
-		&i.OAuthGroups,
-		&i.Expiry,
-		&i.OAuthName,
-		&i.OAuthSub,
-	)
-	return i, err
-}
-
-const updateSession = `-- name: UpdateSession :one
-UPDATE "sessions" SET
-    "username" = ?,
-    "email" = ?,
-    "name" = ?,
-    "provider" = ?,
-    "totp_pending" = ?,
-    "oauth_groups" = ?,
-    "expiry" = ?,
-    "oauth_name" = ?,
-    "oauth_sub" = ?
-WHERE "uuid" = ?
-RETURNING uuid, username, email, name, provider, totp_pending, oauth_groups, expiry, oauth_name, oauth_sub
-`
-
-type UpdateSessionParams struct {
-	Username    string
-	Email       string
-	Name        string
-	Provider    string
-	TotpPending bool
-	OAuthGroups string
-	Expiry      int64
-	OAuthName   string
-	OAuthSub    string
-	UUID        string
-}
-
-func (q *Queries) UpdateSession(ctx context.Context, arg UpdateSessionParams) (Session, error) {
-	row := q.db.QueryRowContext(ctx, updateSession,
-		arg.Username,
-		arg.Email,
-		arg.Name,
-		arg.Provider,
-		arg.TotpPending,
-		arg.OAuthGroups,
-		arg.Expiry,
-		arg.OAuthName,
-		arg.OAuthSub,
-		arg.UUID,
-	)
-	var i Session
-	err := row.Scan(
-		&i.UUID,
-		&i.Username,
-		&i.Email,
-		&i.Name,
-		&i.Provider,
-		&i.TotpPending,
-		&i.OAuthGroups,
-		&i.Expiry,
-		&i.OAuthName,
-		&i.OAuthSub,
-	)
-	return i, err
-}
--- a/internal/service/access_controls_service.go
+++ b/internal/service/access_controls_service.go
@@ -1,54 +1,122 @@
 package service

 import (
-	"errors"
-	"strings"
-
-	"github.com/rs/zerolog/log"
 	"github.com/steveiliop56/tinyauth/internal/config"
 )

+/*
+Environment variable/flag based ACLs are disabled until v5 due to a technical challenge
+with the current parsing logic.
+
+The current parser works for simple OAuth provider configs like:
+- PROVIDERS_MY_AMAZING_PROVIDER_CLIENT_ID
+
+However, it breaks down when handling nested structs required for ACLs. The custom parsing
+solution that worked for v4 OAuth providers is incompatible with the ACL parsing logic,
+making the codebase unmaintainable and fragile.
+
+A solution is being considered for v5 that would standardize the format to something like:
+- TINYAUTH_PROVIDERS_GOOGLE_CLIENTSECRET
+- TINYAUTH_APPS_MYAPP_CONFIG_DOMAIN
+
+This would allow the Traefik parser to handle everything consistently, but requires a
+config migration. Until this is resolved, environment-based ACLs are disabled and only
+Docker label-based ACLs are supported.
+
+See: https://discord.com/channels/1337450123600465984/1337459086270271538/1434986689935179838 for more information
+*/
+
 type AccessControlsService struct {
 	docker *DockerService
-	static map[string]config.App
+	// envACLs config.Apps
 }

-func NewAccessControlsService(docker *DockerService, static map[string]config.App) *AccessControlsService {
+func NewAccessControlsService(docker *DockerService) *AccessControlsService {
 	return &AccessControlsService{
 		docker: docker,
-		static: static,
 	}
 }

 func (acls *AccessControlsService) Init() error {
-	return nil // No initialization needed
+	// acls.envACLs = config.Apps{}
+	// env := os.Environ()
+	// appEnvVars := []string{}
+
+	// for _, e := range env {
+	// 	if strings.HasPrefix(e, "TINYAUTH_APPS_") {
+	// 		appEnvVars = append(appEnvVars, e)
+	// 	}
+	// }
+
+	// err := acls.loadEnvACLs(appEnvVars)
+
+	// if err != nil {
+	// 	return err
+	// }
+
+	// return nil
+
+	return nil
+
 }

-func (acls *AccessControlsService) lookupStaticACLs(domain string) (config.App, error) {
-	for app, config := range acls.static {
-		if config.Config.Domain == domain {
-			log.Debug().Str("name", app).Msg("Found matching container by domain")
-			return config, nil
-		}
+// func (acls *AccessControlsService) loadEnvACLs(appEnvVars []string) error {
+// 	if len(appEnvVars) == 0 {
+// 		return nil
+// 	}

-		if strings.SplitN(domain, ".", 2)[0] == app {
-			log.Debug().Str("name", app).Msg("Found matching container by app name")
-			return config, nil
-		}
-	}
-	return config.App{}, errors.New("no results")
-}
+// 	envAcls := map[string]string{}

-func (acls *AccessControlsService) GetAccessControls(domain string) (config.App, error) {
-	// First check in the static config
-	app, err := acls.lookupStaticACLs(domain)
+// 	for _, e := range appEnvVars {
+// 		parts := strings.SplitN(e, "=", 2)
+// 		if len(parts) != 2 {
+// 			continue
+// 		}

-	if err == nil {
-		log.Debug().Msg("Using ACls from static configuration")
-		return app, nil
-	}
+// 		key := parts[0]
+// 		key = strings.ToLower(key)
+// 		key = strings.ReplaceAll(key, "_", ".")
+// 		value := parts[1]
+// 		envAcls[key] = value
+// 	}
+
+// 	apps, err := decoders.DecodeLabels(envAcls)
+
+// 	if err != nil {
+// 		return err
+// 	}
+
+// 	acls.envACLs = apps
+// 	return nil
+// }
+
+// func (acls *AccessControlsService) lookupEnvACLs(appDomain string) *config.App {
+// 	if len(acls.envACLs.Apps) == 0 {
+// 		return nil
+// 	}
+
+// 	for appName, appACLs := range acls.envACLs.Apps {
+// 		if appACLs.Config.Domain == appDomain {
+// 			return &appACLs
+// 		}
+
+// 		if strings.SplitN(appDomain, ".", 2)[0] == appName {
+// 			return &appACLs
+// 		}
+// 	}
+
+// 	return nil
+// }
+
+func (acls *AccessControlsService) GetAccessControls(appDomain string) (config.App, error) {
+	// First check environment variables
+	// envACLs := acls.lookupEnvACLs(appDomain)
+
+	// if envACLs != nil {
+	// 	log.Debug().Str("domain", appDomain).Msg("Found matching access controls in environment variables")
+	// 	return *envACLs, nil
+	// }

 	// Fallback to Docker labels
-	log.Debug().Msg("Falling back to Docker labels for ACLs")
-	return acls.docker.GetLabels(domain)
+	return acls.docker.GetLabels(appDomain)
 }
--- a/internal/service/auth_service.go
+++ b/internal/service/auth_service.go
@@ -1,8 +1,6 @@
 package service

 import (
-	"context"
-	"database/sql"
 	"errors"
 	"fmt"
 	"regexp"
@@ -11,13 +9,14 @@ import (
 	"time"

 	"github.com/steveiliop56/tinyauth/internal/config"
-	"github.com/steveiliop56/tinyauth/internal/repository"
+	"github.com/steveiliop56/tinyauth/internal/model"
 	"github.com/steveiliop56/tinyauth/internal/utils"

 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 	"github.com/rs/zerolog/log"
 	"golang.org/x/crypto/bcrypt"
+	"gorm.io/gorm"
 )

 type LoginAttempt struct {
@@ -43,17 +42,16 @@ type AuthService struct {
 	loginAttempts map[string]*LoginAttempt
 	loginMutex    sync.RWMutex
 	ldap          *LdapService
-	queries       *repository.Queries
-	ctx           context.Context
+	database      *gorm.DB
 }

-func NewAuthService(config AuthServiceConfig, docker *DockerService, ldap *LdapService, queries *repository.Queries) *AuthService {
+func NewAuthService(config AuthServiceConfig, docker *DockerService, ldap *LdapService, database *gorm.DB) *AuthService {
 	return &AuthService{
 		config:        config,
 		docker:        docker,
 		loginAttempts: make(map[string]*LoginAttempt),
 		ldap:          ldap,
-		queries:       queries,
+		database:      database,
 	}
 }

@@ -205,20 +203,20 @@ func (auth *AuthService) CreateSessionCookie(c *gin.Context, data *config.Sessio
 		expiry = auth.config.SessionExpiry
 	}

-	session := repository.CreateSessionParams{
+	session := model.Session{
 		UUID:        uuid.String(),
 		Username:    data.Username,
 		Email:       data.Email,
 		Name:        data.Name,
 		Provider:    data.Provider,
-		TotpPending: data.TotpPending,
+		TOTPPending: data.TotpPending,
 		OAuthGroups: data.OAuthGroups,
 		Expiry:      time.Now().Add(time.Duration(expiry) * time.Second).Unix(),
 		OAuthName:   data.OAuthName,
 		OAuthSub:    data.OAuthSub,
 	}

-	_, err = auth.queries.CreateSession(c, session)
+	err = gorm.G[model.Session](auth.database).Create(c, &session)

 	if err != nil {
 		return err
@@ -236,7 +234,7 @@ func (auth *AuthService) RefreshSessionCookie(c *gin.Context) error {
 		return err
 	}

-	session, err := auth.queries.GetSession(auth.ctx, cookie)
+	session, err := gorm.G[model.Session](auth.database).Where("uuid = ?", cookie).First(c)

 	if err != nil {
 		return err
@@ -250,17 +248,8 @@ func (auth *AuthService) RefreshSessionCookie(c *gin.Context) error {

 	newExpiry := currentTime + int64(time.Hour.Seconds())

-	_, err = auth.queries.UpdateSession(c, repository.UpdateSessionParams{
-		Username:    session.Username,
-		Email:       session.Email,
-		Name:        session.Name,
-		Provider:    session.Provider,
-		TotpPending: session.TotpPending,
-		OAuthGroups: session.OAuthGroups,
-		Expiry:      newExpiry,
-		OAuthName:   session.OAuthName,
-		OAuthSub:    session.OAuthSub,
-		UUID:        session.UUID,
+	_, err = gorm.G[model.Session](auth.database).Where("uuid = ?", cookie).Updates(c, model.Session{
+		Expiry: newExpiry,
 	})

 	if err != nil {
@@ -279,7 +268,7 @@ func (auth *AuthService) DeleteSessionCookie(c *gin.Context) error {
 		return err
 	}

-	err = auth.queries.DeleteSession(auth.ctx, cookie)
+	_, err = gorm.G[model.Session](auth.database).Where("uuid = ?", cookie).Delete(c)

 	if err != nil {
 		return err
@@ -297,20 +286,20 @@ func (auth *AuthService) GetSessionCookie(c *gin.Context) (config.SessionCookie,
 		return config.SessionCookie{}, err
 	}

-	session, err := auth.queries.GetSession(auth.ctx, cookie)
+	session, err := gorm.G[model.Session](auth.database).Where("uuid = ?", cookie).First(c)

 	if err != nil {
 		return config.SessionCookie{}, err
 	}

-	if errors.Is(err, sql.ErrNoRows) {
+	if errors.Is(err, gorm.ErrRecordNotFound) {
 		return config.SessionCookie{}, fmt.Errorf("session not found")
 	}

 	currentTime := time.Now().Unix()

 	if currentTime > session.Expiry {
-		err = auth.queries.DeleteSession(auth.ctx, cookie)
+		_, err = gorm.G[model.Session](auth.database).Where("uuid = ?", cookie).Delete(c)
 		if err != nil {
 			log.Error().Err(err).Msg("Failed to delete expired session")
 		}
@@ -323,7 +312,7 @@ func (auth *AuthService) GetSessionCookie(c *gin.Context) (config.SessionCookie,
 		Email:       session.Email,
 		Name:        session.Name,
 		Provider:    session.Provider,
-		TotpPending: session.TotpPending,
+		TotpPending: session.TOTPPending,
 		OAuthGroups: session.OAuthGroups,
 		OAuthName:   session.OAuthName,
 		OAuthSub:    session.OAuthSub,
--- a/internal/service/database_service.go
+++ b/internal/service/database_service.go
@@ -0,0 +1,92 @@
+package service
+
+import (
+	"database/sql"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/steveiliop56/tinyauth/internal/assets"
+
+	"github.com/glebarez/sqlite"
+	"github.com/golang-migrate/migrate/v4"
+	sqliteMigrate "github.com/golang-migrate/migrate/v4/database/sqlite3"
+	"github.com/golang-migrate/migrate/v4/source/iofs"
+	"gorm.io/gorm"
+)
+
+type DatabaseServiceConfig struct {
+	DatabasePath string
+}
+
+type DatabaseService struct {
+	config   DatabaseServiceConfig
+	database *gorm.DB
+}
+
+func NewDatabaseService(config DatabaseServiceConfig) *DatabaseService {
+	return &DatabaseService{
+		config: config,
+	}
+}
+
+func (ds *DatabaseService) Init() error {
+	dbPath := ds.config.DatabasePath
+	if dbPath == "" {
+		dbPath = "/data/tinyauth.db"
+	}
+
+	dir := filepath.Dir(dbPath)
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return fmt.Errorf("failed to create database directory %s: %w", dir, err)
+	}
+
+	gormDB, err := gorm.Open(sqlite.Open(dbPath), &gorm.Config{})
+
+	if err != nil {
+		return err
+	}
+
+	sqlDB, err := gormDB.DB()
+
+	if err != nil {
+		return err
+	}
+
+	sqlDB.SetMaxOpenConns(1)
+
+	err = ds.migrateDatabase(sqlDB)
+
+	if err != nil && err != migrate.ErrNoChange {
+		return err
+	}
+
+	ds.database = gormDB
+	return nil
+}
+
+func (ds *DatabaseService) migrateDatabase(sqlDB *sql.DB) error {
+	data, err := iofs.New(assets.Migrations, "migrations")
+
+	if err != nil {
+		return err
+	}
+
+	target, err := sqliteMigrate.WithInstance(sqlDB, &sqliteMigrate.Config{})
+
+	if err != nil {
+		return err
+	}
+
+	migrator, err := migrate.NewWithInstance("iofs", data, "tinyauth", target)
+
+	if err != nil {
+		return err
+	}
+
+	return migrator.Up()
+}
+
+func (ds *DatabaseService) GetDatabase() *gorm.DB {
+	return ds.database
+}
--- a/internal/service/oidc_service.go
+++ b/internal/service/oidc_service.go
@@ -0,0 +1,822 @@
+package service
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha256"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"io"
+	"math/big"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/steveiliop56/tinyauth/internal/config"
+	"github.com/steveiliop56/tinyauth/internal/model"
+	"github.com/steveiliop56/tinyauth/internal/utils"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/google/uuid"
+	"github.com/rs/zerolog/log"
+	"golang.org/x/crypto/bcrypt"
+	"golang.org/x/crypto/hkdf"
+	"gorm.io/gorm"
+)
+
+type OIDCServiceConfig struct {
+	AppURL            string
+	Issuer            string
+	AccessTokenExpiry int
+	IDTokenExpiry     int
+	Database          *gorm.DB
+}
+
+type OIDCService struct {
+	config     OIDCServiceConfig
+	privateKey *rsa.PrivateKey
+	publicKey  *rsa.PublicKey
+	masterKey  []byte // Master key for encrypting private keys (optional)
+}
+
+func NewOIDCService(config OIDCServiceConfig) *OIDCService {
+	return &OIDCService{
+		config: config,
+	}
+}
+
+// encryptPrivateKey encrypts a private key PEM string using AES-GCM
+func (oidc *OIDCService) encryptPrivateKey(plaintext string) (string, error) {
+	if len(oidc.masterKey) == 0 {
+		// No encryption key set, return plaintext
+		return plaintext, nil
+	}
+
+	// Derive AES-256 key from master key using HKDF
+	hkdfReader := hkdf.New(sha256.New, oidc.masterKey, nil, []byte("oidc-aes-256-key-v1"))
+	key := make([]byte, 32) // AES-256 requires 32 bytes
+	if _, err := io.ReadFull(hkdfReader, key); err != nil {
+		return "", fmt.Errorf("failed to derive encryption key: %w", err)
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return "", fmt.Errorf("failed to create cipher: %w", err)
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", fmt.Errorf("failed to create GCM: %w", err)
+	}
+
+	nonce := make([]byte, gcm.NonceSize())
+	if _, err := rand.Read(nonce); err != nil {
+		return "", fmt.Errorf("failed to generate nonce: %w", err)
+	}
+
+	ciphertext := gcm.Seal(nonce, nonce, []byte(plaintext), nil)
+	// Encode as base64 for storage
+	return base64.StdEncoding.EncodeToString(ciphertext), nil
+}
+
+// decryptPrivateKey decrypts an encrypted private key PEM string
+func (oidc *OIDCService) decryptPrivateKey(encrypted string) (string, error) {
+	if len(oidc.masterKey) == 0 {
+		// No encryption key set, assume plaintext
+		return encrypted, nil
+	}
+
+	// Try to decode as base64 (encrypted) first
+	ciphertext, err := base64.StdEncoding.DecodeString(encrypted)
+	if err != nil {
+		// Not base64, assume it's plaintext (backward compatibility)
+		return encrypted, nil
+	}
+
+	// Derive AES-256 key from master key using HKDF
+	hkdfReader := hkdf.New(sha256.New, oidc.masterKey, nil, []byte("oidc-aes-256-key-v1"))
+	key := make([]byte, 32) // AES-256 requires 32 bytes
+	if _, err := io.ReadFull(hkdfReader, key); err != nil {
+		return "", fmt.Errorf("failed to derive decryption key: %w", err)
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return "", fmt.Errorf("failed to create cipher: %w", err)
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return "", fmt.Errorf("failed to create GCM: %w", err)
+	}
+
+	nonceSize := gcm.NonceSize()
+	if len(ciphertext) < nonceSize {
+		// Too short to be encrypted, assume plaintext
+		return encrypted, nil
+	}
+
+	nonce, ciphertext := ciphertext[:nonceSize], ciphertext[nonceSize:]
+	plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
+	if err != nil {
+		return "", fmt.Errorf("failed to decrypt private key: %w", err)
+	}
+
+	return string(plaintext), nil
+}
+
+func (oidc *OIDCService) Init() error {
+	// Load master key from environment (optional)
+	masterKeyEnv := os.Getenv("OIDC_RSA_MASTER_KEY")
+	if masterKeyEnv != "" {
+		oidc.masterKey = []byte(masterKeyEnv)
+		if len(oidc.masterKey) < 32 {
+			log.Warn().Msg("OIDC_RSA_MASTER_KEY is shorter than 32 bytes, consider using a longer key for better security")
+		}
+		log.Info().Msg("RSA private key encryption enabled (using OIDC_RSA_MASTER_KEY)")
+	} else {
+		log.Info().Msg("RSA private key encryption disabled (OIDC_RSA_MASTER_KEY not set)")
+	}
+	// Check if multiple keys exist (for warning)
+	var keyCount int64
+	if err := oidc.config.Database.Model(&model.OIDCKey{}).Count(&keyCount).Error; err != nil {
+		return fmt.Errorf("failed to count RSA keys: %w", err)
+	}
+	if keyCount > 1 {
+		log.Warn().Int64("count", keyCount).Msg("Multiple RSA keys detected in database, loading most recently created key. Consider cleaning up older keys.")
+	}
+
+	// Try to load existing key from database (most recently created)
+	var keyRecord model.OIDCKey
+	err := oidc.config.Database.Order("created_at DESC").First(&keyRecord).Error
+
+	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+		return fmt.Errorf("failed to query for existing RSA key: %w", err)
+	}
+
+	var privateKey *rsa.PrivateKey
+
+	if err == nil && keyRecord.PrivateKey != "" {
+		// Decrypt private key if encrypted
+		privateKeyPEM, err := oidc.decryptPrivateKey(keyRecord.PrivateKey)
+		if err != nil {
+			return fmt.Errorf("failed to decrypt private key: %w", err)
+		}
+
+		// Load existing key
+		block, _ := pem.Decode([]byte(privateKeyPEM))
+		if block == nil {
+			return fmt.Errorf("failed to decode PEM block from stored key")
+		}
+
+		parsedKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+		if err != nil {
+			// Try PKCS8 format as fallback
+			key, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+			if err != nil {
+				return fmt.Errorf("failed to parse stored private key: %w", err)
+			}
+			var ok bool
+			privateKey, ok = key.(*rsa.PrivateKey)
+			if !ok {
+				return fmt.Errorf("stored key is not an RSA private key")
+			}
+		} else {
+			privateKey = parsedKey
+		}
+
+		oidc.privateKey = privateKey
+		oidc.publicKey = &privateKey.PublicKey
+
+		log.Info().Msg("OIDC service initialized with existing RSA key pair from database")
+		return nil
+	}
+
+	// No existing key found, generate new one
+	privateKey, err = rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return fmt.Errorf("failed to generate RSA key: %w", err)
+	}
+
+	// Encode private key to PEM format
+	privateKeyBytes := x509.MarshalPKCS1PrivateKey(privateKey)
+	privateKeyPEM := pem.EncodeToMemory(&pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: privateKeyBytes,
+	})
+
+	// Encrypt private key before storing
+	encryptedPrivateKey, err := oidc.encryptPrivateKey(string(privateKeyPEM))
+	if err != nil {
+		return fmt.Errorf("failed to encrypt private key: %w", err)
+	}
+
+	// Save to database
+	now := time.Now().Unix()
+	keyRecord = model.OIDCKey{
+		PrivateKey: encryptedPrivateKey,
+		CreatedAt:  now,
+		UpdatedAt:  now,
+	}
+
+	if err := oidc.config.Database.Create(&keyRecord).Error; err != nil {
+		return fmt.Errorf("failed to save RSA key to database: %w", err)
+	}
+
+	oidc.privateKey = privateKey
+	oidc.publicKey = &privateKey.PublicKey
+
+	log.Info().Msg("OIDC service initialized with new RSA key pair (saved to database)")
+	return nil
+}
+
+func (oidc *OIDCService) GetClient(clientID string) (*model.OIDCClient, error) {
+	var client model.OIDCClient
+	err := oidc.config.Database.Where("client_id = ?", clientID).First(&client).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, errors.New("client not found")
+		}
+		return nil, err
+	}
+	return &client, nil
+}
+
+func (oidc *OIDCService) VerifyClientSecret(client *model.OIDCClient, secret string) bool {
+	// Use bcrypt for constant-time comparison to prevent timing attacks
+	err := bcrypt.CompareHashAndPassword([]byte(client.ClientSecret), []byte(secret))
+	if err != nil {
+		log.Debug().Err(err).Str("client_id", client.ClientID).Msg("Client secret verification failed")
+		return false
+	}
+	return true
+}
+
+func (oidc *OIDCService) ValidateRedirectURI(client *model.OIDCClient, redirectURI string) bool {
+	var redirectURIs []string
+	if err := json.Unmarshal([]byte(client.RedirectURIs), &redirectURIs); err != nil {
+		log.Error().Err(err).Msg("Failed to unmarshal redirect URIs")
+		return false
+	}
+
+	for _, uri := range redirectURIs {
+		if uri == redirectURI {
+			return true
+		}
+	}
+	return false
+}
+
+func (oidc *OIDCService) ValidateGrantType(client *model.OIDCClient, grantType string) bool {
+	var grantTypes []string
+	if err := json.Unmarshal([]byte(client.GrantTypes), &grantTypes); err != nil {
+		log.Error().Err(err).Msg("Failed to unmarshal grant types")
+		return false
+	}
+
+	for _, gt := range grantTypes {
+		if gt == grantType {
+			return true
+		}
+	}
+	return false
+}
+
+func (oidc *OIDCService) ValidateResponseType(client *model.OIDCClient, responseType string) bool {
+	var responseTypes []string
+	if err := json.Unmarshal([]byte(client.ResponseTypes), &responseTypes); err != nil {
+		log.Error().Err(err).Msg("Failed to unmarshal response types")
+		return false
+	}
+
+	for _, rt := range responseTypes {
+		if rt == responseType {
+			return true
+		}
+	}
+	return false
+}
+
+func (oidc *OIDCService) ValidateScope(client *model.OIDCClient, requestedScopes string) ([]string, error) {
+	var allowedScopes []string
+	if err := json.Unmarshal([]byte(client.Scopes), &allowedScopes); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal scopes: %w", err)
+	}
+
+	requestedScopesList := []string{}
+	if requestedScopes != "" {
+		requestedScopesList = splitScopes(requestedScopes)
+	}
+
+	validScopes := []string{}
+	for _, scope := range requestedScopesList {
+		for _, allowed := range allowedScopes {
+			if scope == allowed {
+				validScopes = append(validScopes, scope)
+				break
+			}
+		}
+	}
+
+	return validScopes, nil
+}
+
+func (oidc *OIDCService) GenerateAuthorizationCode(userContext *config.UserContext, clientID string, redirectURI string, scopes []string, nonce string, codeChallenge string, codeChallengeMethod string) (string, error) {
+	code := uuid.New().String()
+	now := time.Now()
+	expiresAt := now.Add(10 * time.Minute).Unix()
+
+	// Store authorization code in database for replay protection
+	authCodeRecord := model.OIDCAuthorizationCode{
+		Code:        code,
+		ClientID:    clientID,
+		RedirectURI: redirectURI,
+		Used:        false,
+		ExpiresAt:   expiresAt,
+		CreatedAt:   now.Unix(),
+	}
+
+	if err := oidc.config.Database.Create(&authCodeRecord).Error; err != nil {
+		return "", fmt.Errorf("failed to store authorization code: %w", err)
+	}
+
+	// Encode as JWT for stateless operation (but code is tracked in DB)
+	claims := jwt.MapClaims{
+		"code":         code,
+		"username":     userContext.Username,
+		"email":        userContext.Email,
+		"name":         userContext.Name,
+		"provider":     userContext.Provider,
+		"client_id":    clientID,
+		"redirect_uri": redirectURI,
+		"scopes":       scopes,
+		"exp":          expiresAt,
+		"iat":          now.Unix(),
+	}
+
+	if nonce != "" {
+		claims["nonce"] = nonce
+	}
+
+	// Store PKCE challenge if provided
+	if codeChallenge != "" {
+		claims["code_challenge"] = codeChallenge
+		if codeChallengeMethod != "" {
+			claims["code_challenge_method"] = codeChallengeMethod
+		} else {
+			// Default to plain if method not specified
+			claims["code_challenge_method"] = "plain"
+		}
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
+	codeToken, err := token.SignedString(oidc.privateKey)
+	if err != nil {
+		// Clean up the database record if JWT signing fails
+		oidc.config.Database.Delete(&authCodeRecord)
+		return "", fmt.Errorf("failed to sign authorization code: %w", err)
+	}
+
+	return codeToken, nil
+}
+
+func (oidc *OIDCService) ValidateAuthorizationCode(codeToken string, clientID string, redirectURI string) (*config.UserContext, []string, string, string, string, error) {
+	token, err := jwt.Parse(codeToken, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
+			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
+		}
+		return oidc.publicKey, nil
+	})
+
+	if err != nil {
+		return nil, nil, "", "", "", fmt.Errorf("failed to parse authorization code: %w", err)
+	}
+
+	if !token.Valid {
+		return nil, nil, "", "", "", errors.New("invalid authorization code")
+	}
+
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if !ok {
+		return nil, nil, "", "", "", errors.New("invalid token claims")
+	}
+
+	// Extract code from JWT for database lookup
+	code, ok := claims["code"].(string)
+	if !ok || code == "" {
+		return nil, nil, "", "", "", errors.New("missing code in authorization code token")
+	}
+
+	// Check database for replay protection - verify code exists and hasn't been used
+	var authCodeRecord model.OIDCAuthorizationCode
+	err = oidc.config.Database.Where("code = ?", code).First(&authCodeRecord).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil, "", "", "", errors.New("authorization code not found")
+		}
+		return nil, nil, "", "", "", fmt.Errorf("failed to query authorization code: %w", err)
+	}
+
+	// Check if code has already been used (replay attack protection)
+	if authCodeRecord.Used {
+		return nil, nil, "", "", "", errors.New("authorization code has already been used")
+	}
+
+	// Check expiration
+	if time.Now().Unix() > authCodeRecord.ExpiresAt {
+		return nil, nil, "", "", "", errors.New("authorization code expired")
+	}
+
+	// Verify client_id and redirect_uri match
+	if claims["client_id"] != clientID {
+		return nil, nil, "", "", "", errors.New("client_id mismatch")
+	}
+
+	if claims["redirect_uri"] != redirectURI {
+		return nil, nil, "", "", "", errors.New("redirect_uri mismatch")
+	}
+
+	// Verify database record matches request parameters
+	if authCodeRecord.ClientID != clientID {
+		return nil, nil, "", "", "", errors.New("client_id mismatch")
+	}
+
+	if authCodeRecord.RedirectURI != redirectURI {
+		return nil, nil, "", "", "", errors.New("redirect_uri mismatch")
+	}
+
+	// Mark code as used to prevent replay attacks
+	authCodeRecord.Used = true
+	if err := oidc.config.Database.Save(&authCodeRecord).Error; err != nil {
+		return nil, nil, "", "", "", fmt.Errorf("failed to mark authorization code as used: %w", err)
+	}
+
+	userContext := &config.UserContext{
+		Username:   getStringClaim(claims, "username"),
+		Email:      getStringClaim(claims, "email"),
+		Name:       getStringClaim(claims, "name"),
+		Provider:   getStringClaim(claims, "provider"),
+		IsLoggedIn: true,
+	}
+
+	scopes := []string{}
+	if scopesInterface, ok := claims["scopes"].([]interface{}); ok {
+		for _, s := range scopesInterface {
+			if scope, ok := s.(string); ok {
+				scopes = append(scopes, scope)
+			}
+		}
+	}
+
+	nonce := getStringClaim(claims, "nonce")
+	codeChallenge := getStringClaim(claims, "code_challenge")
+	codeChallengeMethod := getStringClaim(claims, "code_challenge_method")
+
+	return userContext, scopes, nonce, codeChallenge, codeChallengeMethod, nil
+}
+
+func (oidc *OIDCService) ValidatePKCE(codeChallenge string, codeChallengeMethod string, codeVerifier string) error {
+	if codeChallenge == "" {
+		// PKCE not used, validation passes
+		return nil
+	}
+
+	if codeVerifier == "" {
+		return errors.New("code_verifier required when code_challenge is present")
+	}
+
+	switch codeChallengeMethod {
+	case "S256":
+		// Compute SHA256 hash of code_verifier
+		hash := sha256.Sum256([]byte(codeVerifier))
+		// Base64URL encode (without padding)
+		computedChallenge := base64.RawURLEncoding.EncodeToString(hash[:])
+		if computedChallenge != codeChallenge {
+			return errors.New("code_verifier does not match code_challenge")
+		}
+	case "plain":
+		// Direct comparison
+		if codeVerifier != codeChallenge {
+			return errors.New("code_verifier does not match code_challenge")
+		}
+	default:
+		return fmt.Errorf("unsupported code_challenge_method: %s", codeChallengeMethod)
+	}
+
+	return nil
+}
+
+func (oidc *OIDCService) GenerateAccessToken(userContext *config.UserContext, clientID string, scopes []string) (string, error) {
+	expiry := oidc.config.AccessTokenExpiry
+	if expiry <= 0 {
+		expiry = 3600 // Default 1 hour
+	}
+
+	now := time.Now()
+	claims := jwt.MapClaims{
+		"sub":       userContext.Username,
+		"iss":       oidc.config.Issuer,
+		"aud":       clientID,
+		"exp":       now.Add(time.Duration(expiry) * time.Second).Unix(),
+		"iat":       now.Unix(),
+		"scope":     joinScopes(scopes),
+		"client_id": clientID,
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
+	accessToken, err := token.SignedString(oidc.privateKey)
+	if err != nil {
+		return "", fmt.Errorf("failed to sign access token: %w", err)
+	}
+
+	return accessToken, nil
+}
+
+func (oidc *OIDCService) ValidateAccessToken(accessToken string) (*config.UserContext, error) {
+	return oidc.ValidateAccessTokenForClient(accessToken, "")
+}
+
+// ValidateAccessTokenForClient validates an access token and optionally checks the audience claim.
+// If expectedClientID is provided, validates that the token's audience matches the expected client ID.
+// This prevents tokens issued for one client from being used by another client.
+func (oidc *OIDCService) ValidateAccessTokenForClient(accessToken string, expectedClientID string) (*config.UserContext, error) {
+	token, err := jwt.Parse(accessToken, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
+			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
+		}
+		return oidc.publicKey, nil
+	})
+
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse access token: %w", err)
+	}
+
+	if !token.Valid {
+		return nil, errors.New("invalid access token")
+	}
+
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if !ok {
+		return nil, errors.New("invalid token claims")
+	}
+
+	// Verify issuer
+	iss, ok := claims["iss"].(string)
+	if !ok || iss != oidc.config.Issuer {
+		return nil, errors.New("invalid issuer")
+	}
+
+	// Verify audience if expected client ID is provided
+	if expectedClientID != "" {
+		aud, ok := claims["aud"].(string)
+		if !ok || aud != expectedClientID {
+			return nil, errors.New("invalid audience")
+		}
+	}
+
+	// Check expiration
+	exp, ok := claims["exp"].(float64)
+	if !ok || time.Now().Unix() > int64(exp) {
+		return nil, errors.New("access token expired")
+	}
+
+	// Extract user info from claims
+	username, ok := claims["sub"].(string)
+	if !ok || username == "" {
+		return nil, errors.New("missing sub claim")
+	}
+
+	// Extract email and name if available
+	email, _ := claims["email"].(string)
+	name, _ := claims["name"].(string)
+
+	// Create user context
+	userContext := &config.UserContext{
+		Username:   username,
+		Email:      email,
+		Name:       name,
+		IsLoggedIn: true,
+	}
+
+	return userContext, nil
+}
+
+func (oidc *OIDCService) GenerateIDToken(userContext *config.UserContext, clientID string, nonce string) (string, error) {
+	expiry := oidc.config.IDTokenExpiry
+	if expiry <= 0 {
+		expiry = 3600 // Default 1 hour
+	}
+
+	now := time.Now()
+	claims := jwt.MapClaims{
+		"sub":                userContext.Username,
+		"iss":                oidc.config.Issuer,
+		"aud":                clientID,
+		"exp":                now.Add(time.Duration(expiry) * time.Second).Unix(),
+		"iat":                now.Unix(),
+		"auth_time":          now.Unix(),
+		"email":              userContext.Email,
+		"name":               userContext.Name,
+		"preferred_username": userContext.Username,
+	}
+
+	if nonce != "" {
+		claims["nonce"] = nonce
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
+	idToken, err := token.SignedString(oidc.privateKey)
+	if err != nil {
+		return "", fmt.Errorf("failed to sign ID token: %w", err)
+	}
+
+	return idToken, nil
+}
+
+func (oidc *OIDCService) GetJWKS() (map[string]interface{}, error) {
+	// Extract modulus and exponent from public key
+	n := oidc.publicKey.N
+	e := oidc.publicKey.E
+
+	nBytes := n.Bytes()
+	// Use minimal-octet encoding for exponent per RFC 7517
+	eBytes := big.NewInt(int64(e)).Bytes()
+
+	jwk := map[string]interface{}{
+		"kty": "RSA",
+		"use": "sig",
+		"kid": "default",
+		"n":   base64.RawURLEncoding.EncodeToString(nBytes),
+		"e":   base64.RawURLEncoding.EncodeToString(eBytes),
+		"alg": "RS256",
+	}
+
+	return map[string]interface{}{
+		"keys": []interface{}{jwk},
+	}, nil
+}
+
+func (oidc *OIDCService) GetIssuer() string {
+	return oidc.config.Issuer
+}
+
+func (oidc *OIDCService) GetAccessTokenExpiry() int {
+	if oidc.config.AccessTokenExpiry <= 0 {
+		return 3600 // Default 1 hour
+	}
+	return oidc.config.AccessTokenExpiry
+}
+
+func (oidc *OIDCService) SyncClientsFromConfig(clients map[string]config.OIDCClientConfig) error {
+	for clientID, clientConfig := range clients {
+		// Get client secret from config or file (similar to OAuth providers)
+		clientSecret := utils.GetSecret(clientConfig.ClientSecret, clientConfig.ClientSecretFile)
+
+		if clientSecret == "" {
+			log.Warn().Str("client_id", clientID).Msg("Client secret is empty, skipping client")
+			continue
+		}
+
+		// Set defaults
+		clientName := clientConfig.ClientName
+		if clientName == "" {
+			clientName = clientID
+		}
+
+		redirectURIs := clientConfig.RedirectURIs
+		if len(redirectURIs) == 0 {
+			log.Warn().Str("client_id", clientID).Msg("No redirect URIs configured for client")
+			continue
+		}
+
+		grantTypes := clientConfig.GrantTypes
+		if len(grantTypes) == 0 {
+			grantTypes = []string{"authorization_code"}
+		}
+
+		responseTypes := clientConfig.ResponseTypes
+		if len(responseTypes) == 0 {
+			responseTypes = []string{"code"}
+		}
+
+		scopes := clientConfig.Scopes
+		if len(scopes) == 0 {
+			scopes = []string{"openid", "profile", "email"}
+		}
+
+		// Serialize arrays to JSON
+		redirectURIsJSON, err := json.Marshal(redirectURIs)
+		if err != nil {
+			log.Error().Err(err).Str("client_id", clientID).Msg("Failed to marshal redirect URIs")
+			continue
+		}
+
+		grantTypesJSON, err := json.Marshal(grantTypes)
+		if err != nil {
+			log.Error().Err(err).Str("client_id", clientID).Msg("Failed to marshal grant types")
+			continue
+		}
+
+		responseTypesJSON, err := json.Marshal(responseTypes)
+		if err != nil {
+			log.Error().Err(err).Str("client_id", clientID).Msg("Failed to marshal response types")
+			continue
+		}
+
+		scopesJSON, err := json.Marshal(scopes)
+		if err != nil {
+			log.Error().Err(err).Str("client_id", clientID).Msg("Failed to marshal scopes")
+			continue
+		}
+
+		// Hash client secret with bcrypt before storing
+		hashedSecret, err := bcrypt.GenerateFromPassword([]byte(clientSecret), bcrypt.DefaultCost)
+		if err != nil {
+			log.Error().Err(err).Str("client_id", clientID).Msg("Failed to hash client secret")
+			continue
+		}
+
+		now := time.Now().Unix()
+
+		// Check if client exists
+		var existingClient model.OIDCClient
+		err = oidc.config.Database.Where("client_id = ?", clientID).First(&existingClient).Error
+
+		client := model.OIDCClient{
+			ClientID:      clientID,
+			ClientSecret:  string(hashedSecret),
+			ClientName:    clientName,
+			RedirectURIs:  string(redirectURIsJSON),
+			GrantTypes:    string(grantTypesJSON),
+			ResponseTypes: string(responseTypesJSON),
+			Scopes:        string(scopesJSON),
+			UpdatedAt:     now,
+		}
+
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			// Create new client
+			client.CreatedAt = now
+			if err := oidc.config.Database.Create(&client).Error; err != nil {
+				log.Error().Err(err).Str("client_id", clientID).Msg("Failed to create OIDC client")
+				continue
+			}
+			log.Info().Str("client_id", clientID).Str("client_name", clientName).Msg("Created OIDC client from config")
+		} else if err == nil {
+			// Update existing client
+			client.CreatedAt = existingClient.CreatedAt // Preserve original creation time
+			if err := oidc.config.Database.Where("client_id = ?", clientID).Updates(&client).Error; err != nil {
+				log.Error().Err(err).Str("client_id", clientID).Msg("Failed to update OIDC client")
+				continue
+			}
+			log.Info().Str("client_id", clientID).Str("client_name", clientName).Msg("Updated OIDC client from config")
+		} else {
+			log.Error().Err(err).Str("client_id", clientID).Msg("Failed to check existing OIDC client")
+			continue
+		}
+	}
+
+	return nil
+}
+
+// Helper functions
+
+func splitScopes(scopes string) []string {
+	if scopes == "" {
+		return []string{}
+	}
+	parts := strings.Split(scopes, " ")
+	result := []string{}
+	for _, part := range parts {
+		trimmed := strings.TrimSpace(part)
+		if trimmed != "" {
+			result = append(result, trimmed)
+		}
+	}
+	return result
+}
+
+func joinScopes(scopes []string) string {
+	return strings.Join(scopes, " ")
+}
+
+func contains(slice []string, item string) bool {
+	for _, s := range slice {
+		if s == item {
+			return true
+		}
+	}
+	return false
+}
+
+func getStringClaim(claims jwt.MapClaims, key string) string {
+	if val, ok := claims[key].(string); ok {
+		return val
+	}
+	return ""
+}
--- a/internal/utils/app_utils.go
+++ b/internal/utils/app_utils.go
@@ -2,6 +2,7 @@ package utils

 import (
 	"errors"
+	"fmt"
 	"net"
 	"net/url"
 	"strings"
@@ -22,13 +23,13 @@ func GetCookieDomain(u string) (string, error) {
 	host := parsed.Hostname()

 	if netIP := net.ParseIP(host); netIP != nil {
-		return "", errors.New("IP addresses not allowed")
+		return "", fmt.Errorf("IP addresses not allowed for app url '%s' (got IP: %s)", u, host)
 	}

 	parts := strings.Split(host, ".")

 	if len(parts) < 3 {
-		return "", errors.New("invalid app url, must be at least second level domain")
+		return "", fmt.Errorf("invalid app url '%s', must be at least second level domain (got %d parts, need 3+)", u, len(parts))
 	}

 	domain := strings.Join(parts[1:], ".")
@@ -36,7 +37,7 @@ func GetCookieDomain(u string) (string, error) {
 	_, err = publicsuffix.DomainFromListWithOptions(publicsuffix.DefaultList, domain, nil)

 	if err != nil {
-		return "", errors.New("domain in public suffix list, cannot set cookies")
+		return "", fmt.Errorf("domain '%s' (from app url '%s') is in public suffix list, cannot set cookies", domain, u)
 	}

 	return domain, nil
--- a/internal/utils/loaders/loader_file.go
+++ b/internal/utils/loaders/loader_file.go
@@ -16,18 +16,25 @@ func (f *FileLoader) Load(args []string, cmd *cli.Command) (bool, error) {
 		return false, err
 	}

-	// I guess we are using traefik as the root name
-	configFileFlag := "traefik.experimental.configFile"
+	// Check for experimental config file flag (supports both traefik.* and direct format)
+	// Note: paerser converts flags to lowercase, so we check lowercase versions
+	configFilePath := ""
+	if val, ok := flags["traefik.experimental.configfile"]; ok {
+		configFilePath = val
+	} else if val, ok := flags["experimental.configfile"]; ok {
+		configFilePath = val
+	}

-	if _, ok := flags[configFileFlag]; !ok {
+	if configFilePath == "" {
 		return false, nil
 	}

-	log.Warn().Msg("Using experimental file config loader, this feature is experimental and may change or be removed in future releases")
+	log.Warn().Str("configFile", configFilePath).Msg("Using experimental file config loader, this feature is experimental and may change or be removed in future releases")

-	err = file.Decode(flags[configFileFlag], cmd.Configuration)
+	err = file.Decode(configFilePath, cmd.Configuration)

 	if err != nil {
+		log.Error().Err(err).Str("configFile", configFilePath).Msg("Failed to decode config file")
 		return false, err
 	}

--- a/1
+++ b/1
--- a/patches/nested_maps.diff
+++ b/patches/nested_maps.diff
@@ -1,95 +0,0 @@
-diff --git a/env/env_test.go b/env/env_test.go
-index 7045569..365dc00 100644
--- a/env/env_test.go
-+++ b/env/env_test.go
-@@ -166,6 +166,38 @@ func TestDecode(t *testing.T) {
- 				Foo: &struct{ Field string }{},
- 			},
- 		},
-+		{
-+			desc:    "map under the root key",
-+			environ: []string{"TRAEFIK_FOO_BAR_FOOBAR_BARFOO=foo"},
-+			element: &struct {
-+				Foo map[string]struct {
-+					Foobar struct {
-+						Barfoo string
-+					}
-+				}
-+			}{},
-+			expected: &struct {
-+				Foo map[string]struct {
-+					Foobar struct {
-+						Barfoo string
-+					}
-+				}
-+			}{
-+				Foo: map[string]struct {
-+					Foobar struct {
-+						Barfoo string
-+					}
-+				}{
-+					"bar": {
-+						Foobar: struct {
-+							Barfoo string
-+						}{
-+							Barfoo: "foo",
-+						},
-+					},
-+				},
-+			},
-+		},
- 	}
- 
- 	for _, test := range testCases {
-diff --git a/parser/nodes_metadata.go b/parser/nodes_metadata.go
-index 36946c1..0279705 100644
--- a/parser/nodes_metadata.go
-+++ b/parser/nodes_metadata.go
-@@ -75,8 +75,13 @@ func (m metadata) add(rootType reflect.Type, node *Node) error {
- 	node.Kind = fType.Kind()
- 	node.Tag = field.Tag
- 
-	if fType.Kind() == reflect.Struct || fType.Kind() == reflect.Pointer && fType.Elem().Kind() == reflect.Struct ||
-		fType.Kind() == reflect.Map {
-+	if node.Kind == reflect.String && len(node.Children) > 0 {
-+		fType = reflect.TypeOf(struct{}{})
-+		node.Kind = reflect.Struct
-+	}
-+
-+	if node.Kind == reflect.Struct || node.Kind == reflect.Pointer && fType.Elem().Kind() == reflect.Struct ||
-+		node.Kind == reflect.Map {
- 		if len(node.Children) == 0 && !(field.Tag.Get(m.TagName) == TagLabelAllowEmpty || field.Tag.Get(m.TagName) == "-") {
- 			return fmt.Errorf("%s cannot be a standalone element (type %s)", node.Name, fType)
- 		}
-@@ -90,11 +95,11 @@ func (m metadata) add(rootType reflect.Type, node *Node) error {
- 		return nil
- 	}
- 
-	if fType.Kind() == reflect.Struct || fType.Kind() == reflect.Pointer && fType.Elem().Kind() == reflect.Struct {
-+	if node.Kind == reflect.Struct || node.Kind == reflect.Pointer && fType.Elem().Kind() == reflect.Struct {
- 		return m.browseChildren(fType, node)
- 	}
- 
-	if fType.Kind() == reflect.Map {
-+	if node.Kind == reflect.Map {
- 		if fType.Elem().Kind() == reflect.Interface {
- 			addRawValue(node)
- 			return nil
-@@ -115,7 +120,7 @@ func (m metadata) add(rootType reflect.Type, node *Node) error {
- 		return nil
- 	}
- 
-	if fType.Kind() == reflect.Slice {
-+	if node.Kind == reflect.Slice {
- 		if m.AllowSliceAsStruct && field.Tag.Get(TagLabelSliceAsStruct) != "" {
- 			return m.browseChildren(fType.Elem(), node)
- 		}
-@@ -129,7 +134,7 @@ func (m metadata) add(rootType reflect.Type, node *Node) error {
- 		return nil
- 	}
- 
-	return fmt.Errorf("invalid node %s: %v", node.Name, fType.Kind())
-+	return fmt.Errorf("invalid node %s: %v", node.Name, node.Kind)
- }
- 
- func (m metadata) findTypedField(rType reflect.Type, node *Node) (reflect.StructField, error) {
--- a/query.sql
+++ b/query.sql
@@ -1,42 +0,0 @@
-- name: CreateSession :one
-INSERT INTO sessions (
-    "uuid",
-    "username",
-    "email",
-    "name",
-    "provider",
-    "totp_pending",
-    "oauth_groups",
-    "expiry",
-    "oauth_name",
-    "oauth_sub"
-) VALUES (
-    ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
-)
-RETURNING *;
-
-- name: GetSession :one
-SELECT * FROM "sessions"
-WHERE "uuid" = ?;
-
-- name: DeleteSession :exec
-DELETE FROM "sessions"
-WHERE "uuid" = ?;
-
-- name: UpdateSession :one
-UPDATE "sessions" SET
-    "username" = ?,
-    "email" = ?,
-    "name" = ?,
-    "provider" = ?,
-    "totp_pending" = ?,
-    "oauth_groups" = ?,
-    "expiry" = ?,
-    "oauth_name" = ?,
-    "oauth_sub" = ?
-WHERE "uuid" = ?
-RETURNING *;
-
-- name: DeleteExpiredSessions :exec
-DELETE FROM "sessions"
-WHERE "expiry" < ?;
--- a/schema.sql
+++ b/schema.sql
@@ -1,12 +0,0 @@
-CREATE TABLE IF NOT EXISTS "sessions" (
-    "uuid" TEXT NOT NULL PRIMARY KEY UNIQUE,
-    "username" TEXT NOT NULL,
-    "email" TEXT NOT NULL,
-    "name" TEXT NOT NULL,
-    "provider" TEXT NOT NULL,
-    "totp_pending" BOOLEAN NOT NULL,
-    "oauth_groups" TEXT NULL,
-    "expiry" INTEGER NOT NULL,
-    "oauth_name" TEXT NULL,
-    "oauth_sub" TEXT NULL
-);
--- a/sqlc.yml
+++ b/sqlc.yml
@@ -1,21 +0,0 @@
-version: "2"
-sql:
-  - engine: "sqlite"
-    queries: "query.sql"
-    schema: "schema.sql"
-    gen:
-      go:
-        package: "repository"
-        out: "internal/repository"
-        rename:
-          uuid: "UUID"
-          oauth_groups: "OAuthGroups"
-          oauth_name: "OAuthName"
-          oauth_sub: "OAuthSub"
-        overrides:
-          - column: "sessions.oauth_groups"
-            go_type: "string"
-          - column: "sessions.oauth_name"
-            go_type: "string"
-          - column: "sessions.oauth_sub"
-            go_type: "string"
--- a/validation/Dockerfile
+++ b/validation/Dockerfile
@@ -0,0 +1,14 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN pip install --no-cache-dir requests authlib
+
+COPY oidc_whoami.py /app/oidc_whoami.py
+
+RUN chmod +x /app/oidc_whoami.py
+
+EXPOSE 8765
+
+CMD ["python3", "/app/oidc_whoami.py"]
+
--- a/validation/README.md
+++ b/validation/README.md
@@ -0,0 +1,181 @@
+# OIDC Validation Setup
+
+This directory contains a docker-compose setup for testing tinyauth's OIDC provider functionality with a minimal test client.
+
+## Setup
+
+1. **Build the OIDC test client image:**
+   ```bash
+   docker build -t oidc-whoami-test:latest .
+   ```
+
+2. **Start the services:**
+   ```bash
+   docker compose up --build
+   ```
+
+## Services
+
+### nginx
+- **Purpose:** Reverse proxy for `auth.example.com` → tinyauth
+- **Ports:** 80 (exposed to host)
+- **Access:** http://auth.example.com/ (via nginx on port 80)
+
+### dns
+- **Purpose:** DNS server (dnsmasq) that resolves `auth.example.com` to the tinyauth container
+- **Configuration:** Resolves `auth.example.com` to the `tinyauth` container IP (172.28.0.20) within the Docker network
+- **Ports:** 53 (UDP/TCP) - not exposed to host (only for container-to-container communication)
+
+### tinyauth
+- **URL:** http://auth.example.com/ (via nginx)
+- **Credentials:** `user` / `pass`
+- **OIDC Discovery:** http://auth.example.com/api/.well-known/openid-configuration
+- **OIDC Client ID:** `testclient`
+- **OIDC Client Secret:** `test-secret-123`
+- **Ports:** Not exposed to host (accessed via nginx on port 80)
+
+### oidc-whoami
+- **Callback URL:** http://localhost:8765/callback
+- **Purpose:** Minimal OIDC test client that validates the OIDC flow
+- **Ports:** 8765 (exposed to host)
+
+## Quick Start
+
+1. **Start all services:**
+   ```bash
+   docker compose up --build -d
+   ```
+
+2. **Launch Chrome with host-resolver-rules:**
+   ```bash
+   ./launch-chrome-host.sh
+   ```
+   
+   Or manually:
+   ```bash
+   google-chrome \
+     --host-resolver-rules="MAP auth.example.com 127.0.0.1" \
+     --disable-features=HttpsOnlyMode \
+     --unsafely-treat-insecure-origin-as-secure=http://auth.example.com \
+     --user-data-dir=/tmp/chrome-test-profile \
+     http://auth.example.com/
+   ```
+   
+   **Note:** The `--user-data-dir` flag uses a temporary profile to avoid HSTS (HTTP Strict Transport Security) issues that might force HTTPS redirects.
+
+3. **Access tinyauth:** http://auth.example.com/
+   - Login with: `user` / `pass`
+
+4. **Test OIDC flow:**
+   ```bash
+   # Get authorization URL from oidc-whoami logs
+   docker compose logs oidc-whoami | grep "Authorization URL"
+   # Open that URL in Chrome (already configured with host-resolver-rules)
+   ```
+
+## Connecting from Chrome/Browser
+
+Since the DNS server is only accessible within the Docker network, you have several options to access `auth.example.com` from your browser:
+
+### Option 1: Use /etc/hosts (Simplest)
+
+Add this line to your `/etc/hosts` file (or `C:\Windows\System32\drivers\etc\hosts` on Windows):
+
+```
+127.0.0.1 auth.example.com
+```
+
+Then access: http://auth.example.com/
+
+**To edit /etc/hosts on Linux/Mac:**
+```bash
+sudo nano /etc/hosts
+# Add: 127.0.0.1 auth.example.com
+```
+
+**To edit hosts on Windows:**
+1. Open Notepad as Administrator
+2. Open `C:\Windows\System32\drivers\etc\hosts`
+3. Add: `127.0.0.1 auth.example.com`
+
+### Option 2: Use Chrome's `--host-resolver-rules` (Chrome-specific, No System Changes)
+
+Chrome has a command-line flag that lets you map hostnames directly, bypassing DNS entirely. This is perfect for testing without modifying system settings.
+
+**To use it:**
+
+1. **Make sure services are running:**
+   ```bash
+   docker compose up -d
+   ```
+
+2. **Launch Chrome with the host resolver rule:**
+
+   **Linux:**
+   ```bash
+   google-chrome --host-resolver-rules="MAP auth.example.com 127.0.0.1"
+   ```
+   
+   **Mac:**
+   ```bash
+   /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome \
+     --host-resolver-rules="MAP auth.example.com 127.0.0.1"
+   ```
+   
+   **Windows:**
+   ```cmd
+   "C:\Program Files\Google\ Chrome\Application\chrome.exe" --host-resolver-rules="MAP auth.example.com 127.0.0.1"
+   ```
+
+3. **Or modify Chrome's shortcut:**
+   - Right-click Chrome shortcut → Properties
+   - In "Target" field, append: ` --host-resolver-rules="MAP auth.example.com 127.0.0.1"`
+   - Click OK
+
+4. **Access:** http://auth.example.com/
+
+**Note:** This only affects Chrome, not other applications. The DNS server on port 5353 isn't needed for this approach.
+
+### Option 3: Use System DNS (All Applications)
+
+If you want to use the DNS server on port 5353 for all applications (not just Chrome), configure your system DNS:
+
+**Linux (with systemd-resolved):**
+```bash
+# Configure systemd-resolved to use our DNS
+sudo resolvectl dns lo 127.0.0.1:5353
+```
+
+**Linux (without systemd-resolved):**
+```bash
+# Edit /etc/resolv.conf
+sudo nano /etc/resolv.conf
+# Add: nameserver 127.0.0.1
+# Note: This won't work with port 5353, you'd need port 53
+```
+
+**Note:** Most systems expect DNS on port 53. To use port 5353, you'd need a DNS proxy or configure Chrome specifically (see Option 2 above).
+
+## Testing
+
+1. Start the services with `docker compose up --build -d`
+2. Launch Chrome: `./launch-chrome-host.sh` (or use `--host-resolver-rules` manually)
+3. Navigate to: http://auth.example.com/
+4. Login with `user` / `pass`
+5. Test the OIDC flow by accessing the discovery endpoint: http://auth.example.com/api/.well-known/openid-configuration
+
+## Configuration
+
+The tinyauth configuration is in `config.yaml`:
+- OIDC is enabled
+- Single user: `user` with password `pass`
+- OIDC client `testclient` is configured with redirect URI `http://localhost:8765/callback`
+- App URL and OIDC issuer: `http://auth.example.com` (via nginx on port 80)
+
+## Notes
+
+- All containers are on a custom Docker network (`tinyauth-network`) with a DNS server for domain resolution
+- The DNS server resolves `auth.example.com` to the tinyauth container within the network
+- The redirect URI must match exactly what's configured in tinyauth
+- Data is persisted in the `./data` directory
+- The domain `auth.example.com` is used to satisfy cookie domain validation requirements (needs at least 3 domain parts and not in public suffix list)
--- a/validation/config.yaml
+++ b/validation/config.yaml
@@ -0,0 +1,36 @@
+appUrl: "http://auth.example.com"
+logLevel: "info"
+databasePath: "/data/tinyauth.db"
+
+auth:
+  users: "user:$2b$12$mWEdxub8KTTBLK/f7dloKOS4t3kIeLOpme5pMXci5.lXNPANjCT5u"  # user:pass
+  secureCookie: false
+  sessionExpiry: 3600
+  loginTimeout: 300
+  loginMaxRetries: 3
+
+oidc:
+  enabled: true
+  issuer: "http://auth.example.com"
+  accessTokenExpiry: 3600
+  idTokenExpiry: 3600
+  clients:
+    testclient:
+      clientSecret: "test-secret-123"
+      clientName: "OIDC Test Client"
+      redirectUris:
+        - "http://client.example.com/callback"
+        - "http://localhost:8765/callback"
+        - "http://127.0.0.1:8765/callback"
+      grantTypes:
+        - "authorization_code"
+      responseTypes:
+        - "code"
+      scopes:
+        - "openid"
+        - "profile"
+        - "email"
+
+ui:
+  title: "Tinyauth OIDC Test"
+
--- a/validation/docker-compose.yml
+++ b/validation/docker-compose.yml
@@ -0,0 +1,91 @@
+version: '3.8'
+
+services:
+  dns:
+    container_name: dns-server
+    image: strm/dnsmasq:latest
+    cap_add:
+      - NET_ADMIN
+    command:
+      - "--no-daemon"
+      - "--log-queries"
+      - "--no-resolv"
+      - "--server=8.8.8.8"
+      - "--server=8.8.4.4"
+      - "--address=/auth.example.com/172.28.0.2"
+      - "--address=/client.example.com/172.28.0.2"
+    # DNS port not exposed to host - only needed for container-to-container communication
+    # Chrome uses --host-resolver-rules instead
+    networks:
+      tinyauth-network:
+        ipv4_address: 172.28.0.10
+
+  nginx:
+    container_name: nginx-proxy
+    image: nginx:alpine
+    ports:
+      - "80:80"
+    volumes:
+      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+    networks:
+      - tinyauth-network
+    # Use Docker's built-in DNS (127.0.0.11) for service name resolution
+    # Our custom DNS (172.28.0.10) is only used via resolver directive in nginx.conf
+    depends_on:
+      - tinyauth
+      - dns
+      - oidc-whoami
+
+
+  tinyauth:
+    container_name: tinyauth-oidc-test
+    build:
+      context: ..
+      dockerfile: Dockerfile
+    command: ["--experimental.configfile=/config/config.yaml"]
+    # Port not exposed to host - accessed via nginx
+    volumes:
+      - ./data:/data
+      - ./config.yaml:/config/config.yaml:ro
+    networks:
+      tinyauth-network:
+        ipv4_address: 172.28.0.20
+    depends_on:
+      - dns
+    healthcheck:
+      test: ["CMD", "tinyauth", "healthcheck"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+
+  oidc-whoami:
+    container_name: oidc-whoami-test
+    build:
+      context: .
+      dockerfile: Dockerfile
+    environment:
+      - OIDC_ISSUER=http://auth.example.com
+      - CLIENT_ID=testclient
+      - CLIENT_SECRET=test-secret-123
+    # Port not exposed to host - accessed via nginx
+    depends_on:
+      - tinyauth
+      - dns
+    # Use Docker's built-in DNS first, then our custom DNS for custom domains
+    dns:
+      - 127.0.0.11
+      - 172.28.0.10
+    networks:
+      tinyauth-network:
+        ipv4_address: 172.28.0.30
+    # Note: Using custom network with DNS server to resolve auth.example.test
+    # The redirect URI must match what's configured in tinyauth (http://localhost:8765/callback)
+    # Using auth.example.test domain to satisfy cookie domain validation requirements (needs 3+ parts, not in public suffix list)
+
+networks:
+  tinyauth-network:
+    driver: bridge
+    ipam:
+      config:
+        - subnet: 172.28.0.0/16
+
--- a/validation/launch-chrome-host.sh
+++ b/validation/launch-chrome-host.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+# Launch Chrome from host (not in container)
+# This script should be run on your host machine
+
+set -e
+
+echo "Launching Chrome for OIDC test setup..."
+
+# Detect Chrome
+if command -v google-chrome &> /dev/null; then
+    CHROME_CMD="google-chrome"
+elif command -v chromium-browser &> /dev/null; then
+    CHROME_CMD="chromium-browser"
+elif command -v chromium &> /dev/null; then
+    CHROME_CMD="chromium"
+elif [ -f "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" ]; then
+    CHROME_CMD="/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"
+else
+    echo "Error: Chrome not found. Please install Google Chrome or Chromium."
+    exit 1
+fi
+
+echo "Using: $CHROME_CMD"
+echo "Opening: http://client.example.com/ (OIDC test client)"
+echo ""
+
+$CHROME_CMD \
+    --host-resolver-rules="MAP auth.example.com 127.0.0.1, MAP client.example.com 127.0.0.1" \
+    --disable-features=HttpsOnlyMode \
+    --unsafely-treat-insecure-origin-as-secure=http://auth.example.com,http://client.example.com \
+    --user-data-dir=/tmp/chrome-test-profile-$(date +%s) \
+    --new-window \
+    http://client.example.com/ \
+    > /dev/null 2>&1 &
+
+echo "Chrome launched!"
+echo "OIDC test client: http://client.example.com/"
+echo "Tinyauth: http://auth.example.com/"
+
--- a/validation/launch-chrome.sh
+++ b/validation/launch-chrome.sh
@@ -0,0 +1,68 @@
+#!/bin/bash
+set -e
+
+echo "=========================================="
+echo "Chrome Launcher for OIDC Test Setup"
+echo "=========================================="
+
+# Wait for nginx to be ready
+echo "Waiting for nginx to be ready..."
+for i in {1..30}; do
+    if curl -s http://127.0.0.1/ > /dev/null 2>&1; then
+        echo "✓ Nginx is ready"
+        break
+    fi
+    if [ $i -eq 30 ]; then
+        echo "✗ Nginx not ready after 30 seconds"
+        exit 1
+    fi
+    sleep 1
+done
+
+# Try to find Chrome on the host system
+# Since we're in a container, we need to check common locations
+CHROME_PATHS=(
+    "/usr/bin/google-chrome"
+    "/usr/bin/google-chrome-stable"
+    "/usr/bin/chromium-browser"
+    "/usr/bin/chromium"
+    "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"
+)
+
+CHROME_CMD=""
+for path in "${CHROME_PATHS[@]}"; do
+    if [ -f "$path" ] || command -v "$(basename "$path")" &> /dev/null; then
+        CHROME_CMD="$(basename "$path")"
+        break
+    fi
+done
+
+if [ -z "$CHROME_CMD" ]; then
+    echo ""
+    echo "Chrome not found in container. This is expected."
+    echo "Please launch Chrome manually on your host with:"
+    echo ""
+    echo '  google-chrome --host-resolver-rules="MAP auth.example.com 127.0.0.1" http://auth.example.com/'
+    echo ""
+    echo "Or use the launch script on your host:"
+    echo "  ./launch-chrome.sh"
+    echo ""
+    exit 0
+fi
+
+echo "Found Chrome: $CHROME_CMD"
+echo "Launching Chrome with host-resolver-rules..."
+echo ""
+
+$CHROME_CMD \
+    --host-resolver-rules="MAP auth.example.com 127.0.0.1" \
+    --new-window \
+    http://auth.example.com/ \
+    > /dev/null 2>&1 &
+
+echo "✓ Chrome launched!"
+echo ""
+echo "Access tinyauth at: http://auth.example.com/"
+echo "OIDC test client callback: http://127.0.0.1:8765/callback"
+echo ""
+
--- a/validation/nginx.conf
+++ b/validation/nginx.conf
@@ -0,0 +1,43 @@
+events {
+    worker_connections 1024;
+}
+
+http {
+    # Use Docker's built-in DNS (127.0.0.11) for service name resolution
+    # This allows nginx to resolve Docker service names like "tinyauth" and "oidc-whoami"
+    resolver 127.0.0.11 valid=10s;
+    resolver_timeout 5s;
+
+    server {
+        listen 80;
+        server_name auth.example.com;
+
+        location / {
+            # Use variable to enable dynamic resolution at request time
+            set $backend "tinyauth:3000";
+            proxy_pass http://$backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-Host $host;
+        }
+    }
+
+    server {
+        listen 80;
+        server_name client.example.com;
+
+        location / {
+            # Use variable to enable dynamic resolution at request time
+            set $backend "oidc-whoami:8765";
+            proxy_pass http://$backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-Host $host;
+        }
+    }
+}
+
--- a/validation/oidc_whoami.py
+++ b/validation/oidc_whoami.py
@@ -0,0 +1,298 @@
+#!/usr/bin/env python3
+import os
+import sys
+import json
+import html
+import webbrowser
+import secrets
+import time
+from http.server import HTTPServer, BaseHTTPRequestHandler
+from urllib.parse import urlparse, parse_qs
+from http.cookies import SimpleCookie
+
+import requests
+from authlib.integrations.requests_client import OAuth2Session
+from authlib.oidc.core import CodeIDToken
+from authlib.jose import jwt
+
+# ---- config via env ----
+ISSUER        = os.environ["OIDC_ISSUER"]
+CLIENT_ID    = os.environ["CLIENT_ID"]
+CLIENT_SECRET= os.environ.get("CLIENT_SECRET")  # optional (public clients ok)
+REDIRECT_URI = "http://client.example.com/callback"
+SCOPE        = "openid profile email"
+
+# ---- discovery ----
+# Retry discovery in case nginx isn't ready yet
+discovery = None
+for attempt in range(10):
+    try:
+        discovery = requests.get(
+            f"{ISSUER.rstrip('/')}/api/.well-known/openid-configuration",
+            timeout=5
+        ).json()
+        break
+    except Exception as e:
+        if attempt < 9:
+            print(f"Discovery attempt {attempt + 1} failed: {e}, retrying...")
+            time.sleep(2)
+        else:
+            raise
+
+if discovery is None:
+    raise RuntimeError("Failed to fetch OIDC discovery document after 10 attempts")
+
+state = secrets.token_urlsafe(16)
+nonce = secrets.token_urlsafe(16)
+
+client = OAuth2Session(
+    client_id=CLIENT_ID,
+    client_secret=CLIENT_SECRET,
+    scope=SCOPE,
+    redirect_uri=REDIRECT_URI,
+)
+
+auth_result = client.create_authorization_url(
+    discovery["authorization_endpoint"],
+    state=state,
+    nonce=nonce,
+    code_challenge_method="S256",
+)
+auth_url = auth_result[0]
+code_verifier = auth_result[1] if len(auth_result) > 1 else None
+
+# Cache JWKS for token validation
+jwk_set_cache = None
+jwk_set_cache_time = None
+
+def get_jwk_set():
+    """Get JWKS with caching"""
+    global jwk_set_cache, jwk_set_cache_time
+    # Cache for 1 hour
+    if jwk_set_cache is None or (jwk_set_cache_time and time.time() - jwk_set_cache_time > 3600):
+        jwk_set_cache = requests.get(discovery["jwks_uri"]).json()
+        jwk_set_cache_time = time.time()
+    return jwk_set_cache
+
+def parse_cookies(cookie_header):
+    """Parse cookies from Cookie header"""
+    if not cookie_header:
+        return {}
+    cookie = SimpleCookie()
+    cookie.load(cookie_header)
+    return {k: v.value for k, v in cookie.items()}
+
+def validate_id_token(id_token):
+    """Validate and decode ID token"""
+    try:
+        jwk_set = get_jwk_set()
+        claims_options = {
+            "iss": {"essential": True, "value": discovery["issuer"]},
+            "aud": {"essential": True, "value": CLIENT_ID},
+        }
+        decoded = jwt.decode(
+            id_token,
+            key=jwk_set,
+            claims_options=claims_options
+        )
+        decoded.validate()
+        return dict(decoded)
+    except Exception as e:
+        print(f"Token validation failed: {e}")
+        return None
+
+# ---- tiny callback server ----
+class CallbackHandler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        # Handle root path - check if already logged in
+        if self.path == "/" or self.path == "":
+            cookies = parse_cookies(self.headers.get("Cookie"))
+            id_token = cookies.get("id_token")
+            
+            # Check if we have a valid token
+            if id_token:
+                claims = validate_id_token(id_token)
+                if claims and claims.get("exp", 0) > time.time():
+                    # Already logged in - show main page
+                    self.send_response(200)
+                    self.send_header("Content-type", "text/html")
+                    self.end_headers()
+                    html_content = f"""
+                    <!DOCTYPE html>
+                    <html>
+                    <head>
+                        <title>OIDC Test Client - Welcome</title>
+                        <style>
+                            body {{
+                                font-family: Arial, sans-serif;
+                                max-width: 800px;
+                                margin: 50px auto;
+                                padding: 20px;
+                                background: #f5f5f5;
+                            }}
+                            .main-box {{
+                                background: white;
+                                border-radius: 8px;
+                                padding: 30px;
+                                box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+                            }}
+                            h1 {{
+                                color: #4285f4;
+                                margin-top: 0;
+                            }}
+                            .user-info {{
+                                background: #f9f9f9;
+                                padding: 20px;
+                                border-radius: 4px;
+                                margin: 20px 0;
+                                border-left: 4px solid #4285f4;
+                            }}
+                            pre {{
+                                background: #f9f9f9;
+                                padding: 15px;
+                                border-radius: 4px;
+                                overflow-x: auto;
+                                border: 1px solid #ddd;
+                            }}
+                            .logout-btn {{
+                                display: inline-block;
+                                padding: 10px 20px;
+                                background: #dc3545;
+                                color: white;
+                                text-decoration: none;
+                                border-radius: 4px;
+                                margin-top: 20px;
+                            }}
+                        </style>
+                    </head>
+                    <body>
+                        <div class="main-box">
+                            <h1>✅ Welcome back!</h1>
+                            <div class="user-info">
+                                <h2>User Information</h2>
+                                <p><strong>Username:</strong> {html.escape(str(claims.get('preferred_username', claims.get('sub', 'N/A'))))}</p>
+                                <p><strong>Name:</strong> {html.escape(str(claims.get('name', 'N/A')))}</p>
+                                <p><strong>Email:</strong> {html.escape(str(claims.get('email', 'N/A')))}</p>
+                            </div>
+                            <hr>
+                            <h2>ID Token Claims:</h2>
+                            <pre>{html.escape(json.dumps(claims, indent=2))}</pre>
+                            <a href="/logout" class="logout-btn">Logout</a>
+                        </div>
+                    </body>
+                    </html>
+                    """
+                    self.wfile.write(html_content.encode())
+                    return
+            
+            # Not logged in - show login page
+            self.send_response(200)
+            self.send_header("Content-type", "text/html")
+            self.end_headers()
+            html_content = f"""
+            <!DOCTYPE html>
+            <html>
+            <head><title>OIDC Test Client</title></head>
+            <body>
+                <h1>OIDC Test Client</h1>
+                <p>Click the button below to start the OIDC flow:</p>
+                <a href="{auth_url}" style="display: inline-block; padding: 10px 20px; background: #4285f4; color: white; text-decoration: none; border-radius: 4px;">Login with OIDC</a>
+                <hr>
+                <p><small>Authorization URL: <code>{auth_url}</code></small></p>
+            </body>
+            </html>
+            """
+            self.wfile.write(html_content.encode())
+            return
+        
+        # Handle logout
+        if self.path == "/logout":
+            self.send_response(302)
+            self.send_header("Location", "/")
+            self.send_header("Set-Cookie", "id_token=; Path=/; Max-Age=0")
+            self.end_headers()
+            return
+
+        # Handle callback
+        if not self.path.startswith("/callback"):
+            self.send_error(404, "Not Found")
+            return
+
+        qs = parse_qs(urlparse(self.path).query)
+
+        if qs.get("state", [None])[0] != state:
+            self.send_error(400, "Invalid state")
+            return
+
+        code = qs.get("code", [None])[0]
+        if not code:
+            self.send_error(400, "Missing code")
+            return
+
+        token = client.fetch_token(
+            discovery["token_endpoint"],
+            code=code,
+            code_verifier=code_verifier,
+        )
+
+        # ---- ID token validation ----
+        # Decode and validate the ID token using cached JWKS
+        jwk_set = get_jwk_set()
+        
+        # Decode the JWT - make nonce optional if not provided
+        claims_options = {
+            "iss": {"essential": True, "value": discovery["issuer"]},
+            "aud": {"essential": True, "value": CLIENT_ID},
+        }
+        if nonce:
+            claims_options["nonce"] = {"essential": True, "value": nonce}
+        
+        decoded = jwt.decode(
+            token["id_token"],
+            key=jwk_set,
+            claims_options=claims_options
+        )
+        decoded.validate()
+        
+        # Convert JWTClaims to dict for display
+        id_token_claims = dict(decoded)
+
+        # Store ID token in cookie (expires when token expires)
+        token_expiry = id_token_claims.get("exp", 0) - time.time()
+        max_age = max(0, int(token_expiry))
+
+        # Redirect to main page with cookie set
+        self.send_response(302)
+        self.send_header("Location", "/")
+        self.send_header("Set-Cookie", f"id_token={token['id_token']}; Path=/; Max-Age={max_age}; HttpOnly")
+        self.end_headers()
+
+        print("\n" + "=" * 60)
+        print("✅ OIDC Authentication Successful!")
+        print("=" * 60)
+        print("\nID Token Claims:")
+        print(json.dumps(id_token_claims, indent=2))
+        print("\n" + "=" * 60)
+        # Don't exit - keep server running for multiple test flows
+
+# ---- run ----
+print("=" * 60)
+print("OIDC Test Client")
+print("=" * 60)
+print(f"\nAuthorization URL: {auth_url}")
+print("\nTo test the OIDC flow:")
+print("1. Open the authorization URL above in your browser")
+print("2. Login with credentials: user / pass")
+print("3. You will be redirected back to the callback")
+print("4. The ID token claims will be displayed below")
+print(f"\nWaiting for callback on {REDIRECT_URI}...")
+print("=" * 60)
+
+# Try to open browser (may fail in Docker, that's OK)
+try:
+    webbrowser.open(auth_url)
+except Exception as e:
+    print(f"Could not open browser automatically: {e}")
+    print("Please open the authorization URL manually")
+
+HTTPServer(("0.0.0.0", 8765), CallbackHandler).serve_forever()
Author	SHA1	Message	Date
Olivier Dumont	3f2f813902	Trigger automated review	2025-12-30 14:22:53 +01:00
Olivier Dumont	014550f80e	CRITICAL: Add audience validation for access tokens Access tokens include an 'aud' (audience) claim set to the client ID, but this was never validated during token validation. This allowed tokens issued for one client to be used by another client, violating the OAuth 2.0 security model. Changes: - Add ValidateAccessTokenForClient method that validates audience if expectedClientID is provided - Update ValidateAccessToken to call ValidateAccessTokenForClient (backward compatible, no audience check if not specified) - Update userinfo endpoint to accept optional client_id parameter and validate token audience matches it Security impact: - Prevents token reuse across different clients - Ensures tokens are scoped to specific clients as intended - Prevents attackers from using tokens issued for one client to access resources protected by another client	2025-12-30 14:10:50 +01:00
Olivier Dumont	5ec9989189	Remove redundant 'openid' scope special case logic The special case for adding 'openid' scope was redundant and could potentially bypass client scope restrictions. The main loop already correctly adds 'openid' to validScopes if it's in both requestedScopes and allowedScopes. Since 'openid' is already in the default scopes during client configuration (SyncClientsFromConfig), it will be available for clients that don't explicitly configure scopes. Clients can include or exclude 'openid' in their allowedScopes as needed. This ensures consistent enforcement of client scope restrictions with no special-case bypasses.	2025-12-30 13:52:01 +01:00
Olivier Dumont	ad12110fbf	Replace SHA256 with HKDF for key derivation and fix scope validation Security improvements: 1. HKDF key derivation: - Replace raw sha256.Sum256() with proper HKDF (HMAC-based KDF) - Uses domain-separated label 'oidc-aes-256-key-v1' for key derivation - Applied to both encryptPrivateKey and decryptPrivateKey - Provides better security properties than raw hash 2. Scope validation fix: - Only add 'openid' scope if it's both requested AND in client's allowedScopes - Prevents bypassing client scope restrictions - Respects configured allowedScopes Both changes improve security posture while maintaining backward compatibility.	2025-12-30 13:37:43 +01:00
Olivier Dumont	ca74534048	Add bcrypt hashing for client secrets and RSA key encryption Security improvements: 1. Client secret hashing: - Replace plaintext comparison with bcrypt.CompareHashAndPassword - Provides constant-time comparison to prevent timing attacks - Hash secrets with bcrypt before storing in database - Update SyncClientsFromConfig to hash incoming plaintext secrets 2. Deterministic RSA key loading: - Load most recently created key using ORDER BY created_at DESC - Add warning if multiple keys detected in database - Ensures consistent key selection on startup 3. Optional RSA key encryption: - Encrypt private keys with AES-256-GCM when OIDC_RSA_MASTER_KEY is set - Master key derived via SHA256 from environment variable - Backward compatible: stores plaintext if no master key set - Automatic detection of encrypted vs plaintext on load All changes maintain backward compatibility with existing deployments.	2025-12-30 13:26:06 +01:00
Olivier Dumont	1b37096b58	CRITICAL: Add replay protection for authorization codes Authorization codes were implemented as stateless JWTs with no tracking, allowing the same code to be exchanged for tokens multiple times. This violates OAuth 2.0 RFC 6749 Section 4.1.2 which mandates that authorization codes MUST be single-use. This change: - Adds oidc_authorization_codes table to track code usage - Stores authorization codes in database when generated - Validates code exists and hasn't been used before exchange - Marks code as used immediately after validation - Prevents replay attacks where intercepted codes could be reused Security impact: - Prevents attackers from reusing intercepted authorization codes - Ensures compliance with OAuth 2.0 security requirements - Adds database-backed single-use enforcement	2025-12-30 13:00:19 +01:00
Olivier Dumont	cd068d16c2	Fix Python scoping issue: rename html variable to avoid conflict The variable 'html' was being assigned to store HTML content, which caused Python to treat 'html' as a local variable throughout the function. This prevented access to the 'html' module (imported at the top) within f-strings that referenced html.escape(). Renamed the HTML content variable to 'html_content' to avoid the naming conflict with the html module.	2025-12-30 12:52:53 +01:00
Olivier Dumont	5b5799ab62	Fix XSS vulnerability: Escape user claims in HTML output User claims from ID tokens (username, name, email) were directly interpolated into HTML without escaping, allowing XSS attacks if malicious content was present in claims. This fix: - Imports html module for escaping - Escapes all user-controlled data before rendering in HTML - Escapes JSON output in pre tags as well - Prevents execution of malicious scripts in browser	2025-12-30 12:46:03 +01:00
Olivier Dumont	672914ceb7	Remove insecure query parameter fallback for client credentials The discovery document only advertises client_secret_basic and client_secret_post as supported authentication methods. Query parameters are insecure because they are: - Logged in access logs - Stored in browser history - Exposed in referrer headers This fix removes the query parameter fallback, ensuring client secrets are only accepted via: - Authorization header (client_secret_basic) - POST form body (client_secret_post) This aligns the implementation with the advertised capabilities and prevents client secret exposure through query strings.	2025-12-30 12:40:55 +01:00
Olivier Dumont	f006ebe5e4	Fix open redirect vulnerability in authorize endpoint Per OAuth 2.0 RFC 6749 §4.1.2.1, errors should NOT redirect to unvalidated redirect_uri values. This fix: - Returns JSON errors for failures before redirect_uri validation (missing parameters, invalid client) - Only redirects to redirect_uri after it has been validated against registered client URIs - Prevents open redirect attacks where malicious redirect_uri values could be used to redirect users to attacker-controlled sites	2025-12-30 12:40:01 +01:00
Olivier Dumont	dabb4398ad	Implement PKCE (Proof Key for Code Exchange) support PKCE was advertised in the discovery document but not actually implemented. This commit adds full PKCE support: - Store code_challenge and code_challenge_method in authorization code JWT - Accept code_verifier parameter in token endpoint - Validate code_verifier against stored code_challenge - Support both S256 (SHA256) and plain code challenge methods - PKCE validation is required when code_challenge is present This prevents authorization code interception attacks by requiring the client to prove possession of the code_verifier that was used to generate the code_challenge.	2025-12-30 12:39:00 +01:00
Olivier Dumont	ef157ae9ba	Fix critical security issue: verify JWT signature in access token validation The validateAccessToken method was only decoding the JWT payload without verifying the signature, allowing attackers to forge tokens. This fix: - Adds ValidateAccessToken method to OIDCService that properly verifies JWT signature using RSA public key - Validates issuer, expiration, and required claims - Updates controller to use the secure validation method - Removes insecure manual JWT parsing code	2025-12-30 12:36:30 +01:00
Olivier Dumont	020fcb9878	Add OIDC provider functionality with validation setup This commit adds OpenID Connect (OIDC) provider functionality to tinyauth, allowing it to act as an OIDC identity provider for other applications. Features: - OIDC discovery endpoint at /.well-known/openid-configuration - Authorization endpoint for OAuth 2.0 authorization code flow - Token endpoint for exchanging authorization codes for tokens - ID token generation with JWT signing - JWKS endpoint for public key distribution - Support for PKCE (code challenge/verifier) - Nonce validation for ID tokens - Configurable OIDC clients with redirect URIs, scopes, and grant types Validation: - Docker Compose setup for local testing - OIDC test client (oidc-whoami) with session management - Nginx reverse proxy configuration - DNS server (dnsmasq) for custom domain resolution - Chrome launch script for easy testing Configuration: - OIDC configuration in config.yaml - Example configuration in config.example.yaml - Database migrations for OIDC client storage	2025-12-30 12:17:55 +01:00