56 lines
1.9 KiB
Go
56 lines
1.9 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package openid
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import (
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"net/http"
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"sync"
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"time"
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"gitea.dev/modules/hostmatcher"
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"gitea.dev/modules/proxy"
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"gitea.dev/modules/setting"
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"github.com/yohcop/openid-go"
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)
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// For the demo, we use in-memory infinite storage nonce and discovery
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// cache. In your app, do not use this as it will eat up memory and
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// never
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// free it. Use your own implementation, on a better database system.
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// If you have multiple servers for example, you may need to share at
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// least
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// the nonceStore between them.
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var (
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nonceStore = openid.NewSimpleNonceStore()
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discoveryCache = newTimedDiscoveryCache(24 * time.Hour)
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// openIDInstance does discovery/verification via an SSRF-protected client, so a user-supplied
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// OpenID identifier can't reach internal/loopback/reserved addresses. It honors the operator's
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// [security] ALLOWED_HOST_LIST (empty defaults to "external"), matching the avatar/webhook/migration
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// clients, and validates the proxy path too. Lazy: reads proxy/settings once.
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openIDInstance = sync.OnceValue(func() *openid.OpenID {
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allowList := hostmatcher.ParseHostMatchList("security.ALLOWED_HOST_LIST", setting.Security.AllowedHostList)
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return openid.NewOpenID(&http.Client{
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Timeout: 30 * time.Second,
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Transport: hostmatcher.NewHTTPTransport("openid", allowList, nil, proxy.Proxy(), setting.Proxy.ProxyURLFixed, nil),
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})
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})
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)
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// Verify handles response from OpenID provider
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func Verify(fullURL string) (id string, err error) {
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return openIDInstance().Verify(fullURL, discoveryCache, nonceStore)
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}
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// Normalize normalizes an OpenID URI
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func Normalize(url string) (id string, err error) {
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return openid.Normalize(url)
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}
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// RedirectURL redirects browser
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func RedirectURL(id, callbackURL, realm string) (string, error) {
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return openIDInstance().RedirectURL(id, callbackURL, realm)
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}
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