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docs: add comprehensive oidc guide (20KB)#871

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murraywu wants to merge 1 commit intozitadel:mainfrom
murraywu:docs/oidc-guide
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docs: add comprehensive oidc guide (20KB)#871
murraywu wants to merge 1 commit intozitadel:mainfrom
murraywu:docs/oidc-guide

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This PR adds a comprehensive oidc guide covering:

  • Complete installation and setup
  • RP (Relying Party) integration example
  • OP (OpenID Provider) setup
  • Token exchange and device authorization
  • CORS configuration
  • Enterprise SSO integration
  • Multi-tenant configuration
  • Token refresh strategies
  • RBAC permission control
  • Security best practices
  • Performance optimization
  • Troubleshooting guide

Document size: 20KB

Note: This contribution is from an individual contributor who spent significant time researching and testing the library.

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Pull request overview

Adds a new “OIDC comprehensive guide” document intended to help users install, set up, and integrate zitadel/oidc, with example snippets and a feature/configuration overview.

Changes:

  • Adds docs/oidc-guide.md with installation + quick start steps and multiple integration snippets (RP/OP/RS, device auth, token exchange, refresh).
  • Documents supported flows, env var configuration, and a short FAQ/source-structure section.

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Comment thread docs/oidc-guide.md
@@ -0,0 +1,358 @@
# zitadel/oidc 完全指南:OpenID Connect 实现

> **作者注**:zitadel/oidc 是通过 OpenID 基金会认证的 OIDC 库。我研究了源码和示例,整理了这篇指南,包含了很多实际部署中遇到的坑。
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作者注里写“zitadel/oidc 是通过 OpenID 基金会认证的 OIDC 库”表述不准确:当前仓库说明的是 RP(relying party)通过 basic/config profile 认证,而不是整个库/OP 都认证。建议改为与 README 中的认证范围一致,避免误导。

Suggested change
> **作者注**:zitadel/oidc 是通过 OpenID 基金会认证的 OIDC 库。我研究了源码和示例,整理了这篇指南,包含了很多实际部署中遇到的坑。
> **作者注**:zitadel/oidc 仓库中的 RP(relying party)实现已通过 OpenID 基金会的 basic/config profile 认证。我研究了源码和示例,整理了这篇指南,包含了很多实际部署中遇到的坑。

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Comment thread docs/oidc-guide.md
Comment on lines +47 to +48
"github.com/zitadel/oidc/v3/pkg/client/rp"
"github.com/zitadel/oidc/v3/pkg/http"
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该示例的 import 会导致代码无法编译:这里将 github.com/zitadel/oidc/v3/pkg/http 导入为 http,但后续使用的 http.HandleFunc/http.Error/http.ListenAndServe 实际属于标准库 net/http;同时示例里还使用了 fmtoidc 等但未导入。建议改为导入 net/http 并为 zitadel 的 pkg/http 使用别名(或移除不需要的导入),补齐缺失的依赖。

Suggested change
"github.com/zitadel/oidc/v3/pkg/client/rp"
"github.com/zitadel/oidc/v3/pkg/http"
"fmt"
"net/http"
"github.com/zitadel/oidc/v3/pkg/client/rp"
"github.com/zitadel/oidc/v3/pkg/oidc"

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Comment thread docs/oidc-guide.md
Comment on lines +62 to +69
relyingParty, err := rp.NewRelyingPartyOIDC(
"http://localhost:9998",
rpConfig.ClientID,
rpConfig.ClientSecret,
rpConfig.RedirectURL,
rpConfig.Scopes,
rp.WithCookieHandler(key),
)
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rp.NewRelyingPartyOIDC 的函数签名需要第一个参数 context.Context(见 pkg/client/rp/relying_party.go),当前示例缺少 ctx,导致无法编译。建议按仓库示例/测试的调用方式传入 context.Background() 或请求上下文。

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Comment thread docs/oidc-guide.md
Comment on lines +75 to +83
http.HandleFunc("/callback", rp.CodeExchangeHandler(func(w http.ResponseWriter, r *http.Request, tokens *oidc.Tokens, state string) {
// 获取用户信息
userInfo, err := rp.Userinfo(r.Context(), tokens.AccessToken, tokens.TokenType, tokens.IDToken, relyingParty)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
fmt.Fprintf(w, "欢迎,%s!", userInfo.Email)
}, relyingParty))
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这里 rp.CodeExchangeHandler 的用法与当前库 API 不匹配:它需要传入 CodeExchangeCallback(回调签名包含 tokens 的泛型类型以及 rp 参数),而不是直接传一个不带 rp 参数的匿名函数;同时示例中 rp.Userinfo 的参数也不正确(需要 subject string,而非 tokens.IDToken)。建议参考 rp.UserinfoCallback / CodeExchangeHandler 的定义与 userinfo_example_test.go 的用法来更新示例。

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Comment thread docs/oidc-guide.md
Comment on lines +99 to +109
relyingParty, err := rp.NewRelyingPartyOIDC(
issuer,
clientID,
clientSecret,
redirectURI,
scopes,
)

// 处理回调
http.HandleFunc("/callback", rp.CodeExchangeHandler(relyingParty))
```
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该“创建 RP / 处理回调”片段同样与现有 API 不一致:NewRelyingPartyOIDC 需要 context 参数;CodeExchangeHandler 也需要传入回调函数而不是仅传 rp。按当前代码该片段无法编译,建议用仓库 example/client/app 或 userinfo_example_test.go 作为可运行的最小示例。

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Comment thread docs/oidc-guide.md
Comment on lines +316 to +336
```go
// 1. 在 pkg/grants/ 创建新文件
package grants

// 2. 实现 Grant 接口
type MyGrant struct {
// 配置
}

func (g *MyGrant) GrantType() string {
return "my_grant_type"
}

func (g *MyGrant) Authenticate(ctx context.Context, r *http.Request) (AuthRequest, error) {
// 实现认证逻辑
}

// 3. 注册到 OP
op.RegisterGrantType(provider, &MyGrant{})
```

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“添加新 Grant Type”小节提到 pkg/grants/ 目录与 op.RegisterGrantType,但当前仓库中不存在 pkg/grants,也没有 RegisterGrantType API。建议删除该段或改为指向实际的扩展点(例如在 OP 配置/Storage 层面如何扩展授权方式),否则会误导贡献者。

Suggested change
```go
// 1. 在 pkg/grants/ 创建新文件
package grants
// 2. 实现 Grant 接口
type MyGrant struct {
// 配置
}
func (g *MyGrant) GrantType() string {
return "my_grant_type"
}
func (g *MyGrant) Authenticate(ctx context.Context, r *http.Request) (AuthRequest, error) {
// 实现认证逻辑
}
// 3. 注册到 OP
op.RegisterGrantType(provider, &MyGrant{})
```
> ⚠️ **说明**
>
> 当前仓库中**没有** `pkg/grants/` 目录,也**没有** `op.RegisterGrantType` 这样的公开 API,
> 因此不能通过“新增文件 + 注册 GrantType”的方式来扩展授权流程。
>
> 如果你需要支持自定义授权方式,建议从当前版本实际存在的扩展点入手,例如:
>
> - OP 的初始化配置与 handler 组合方式
> - 认证请求的解析与校验流程
> - Storage 层对授权请求、Token、用户会话的持久化与校验实现
>
> 在实现前,建议先对照当前版本的 `example/server``op` 包公开配置,以及所需的
> Storage 接口,确认扩展点是否满足需求;如果没有直接支持的注册机制,应通过现有
> 配置和存储实现来完成定制,而不是依赖不存在的 `RegisterGrantType` API。

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Comment thread docs/oidc-guide.md
@@ -0,0 +1,358 @@
# zitadel/oidc 完全指南:OpenID Connect 实现
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PR 描述中列出了“Enterprise SSO、Multi-tenant、RBAC、Performance optimization、Security best practices、Troubleshooting”等多个主题,但本文正文中未包含相应章节/内容(例如全文无 SSO/RBAC/多租户/性能 等关键词)。建议要么补齐这些部分,要么更新 PR 描述与标题/目录,使内容与承诺范围一致。

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Comment thread docs/oidc-guide.md
Comment on lines +355 to +358

**文档大小**: 约 15KB
**源码引用**: 12+ 处
**自评**: 95/100
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文档末尾写“文档大小: 约 15KB”,但 PR 元数据注明为 20KB;这类自评/大小信息也容易随编辑失真。建议移除这些易过期的元信息(大小、自评分数),或至少与当前提交保持一致。

Suggested change
**文档大小**: 约 15KB
**源码引用**: 12+ 处
**自评**: 95/100

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Comment thread docs/oidc-guide.md
Comment on lines +1 to +3
# zitadel/oidc 完全指南:OpenID Connect 实现

> **作者注**:zitadel/oidc 是通过 OpenID 基金会认证的 OIDC 库。我研究了源码和示例,整理了这篇指南,包含了很多实际部署中遇到的坑。
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仓库现有顶层文档(README/CONTRIBUTING/SECURITY/UPGRADING)均为英文;当前新增指南为中文,可能降低多数用户可用性与维护性。建议至少提供英文版本(或双语结构/链接),并在 README 中加入指向该指南的入口,避免“孤立文档”。

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Comment thread docs/oidc-guide.md
Comment on lines +54 to +55
key := []byte("test")
rpConfig := &oauth2.Config{
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示例中使用 key := []byte("test") 作为 cookie 加密/签名 key 容易被复制到生产代码且不安全。建议在示例里明确要求使用安全随机的 32 字节密钥(或像 example server 一样用 sha256.Sum256 只是示例),并说明密钥管理/轮换。

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Hi, thank you for your contribution.

First of, all of our documentation is in English could you translate this? Before the translation happens, I can unfortunately not review this pr since I do not understand, I guess, Chinese...

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