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138 lines
3.3 KiB
Go
138 lines
3.3 KiB
Go
7 years ago
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// Copyright 2017 Drone.IO Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"flag"
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"fmt"
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"net/http"
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"os"
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"github.com/drone/go-login/login"
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"github.com/drone/go-login/login/bitbucket"
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"github.com/drone/go-login/login/github"
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"github.com/drone/go-login/login/gitlab"
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"github.com/drone/go-login/login/gogs"
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)
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var (
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provider = flag.String("provider", "github", "")
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providerURL = flag.String("provider-url", "", "")
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clientID = flag.String("client-id", "", "")
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clientSecret = flag.String("client-secret", "", "")
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redirectURL = flag.String("redirect-url", "http://localhost:8080/login", "")
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address = flag.String("address", ":8080", "")
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help = flag.Bool("help", false, "")
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)
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func main() {
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flag.Usage = usage
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flag.Parse()
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if *help {
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flag.Usage()
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os.Exit(0)
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}
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var auther http.Handler
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switch *provider {
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case "gogs", "gitea":
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auther = gogs.New(
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http.HandlerFunc(details),
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gogs.WithAddress(*providerURL),
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gogs.WithLoginRedirect("/login/form"),
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)
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case "gitlab":
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auther = gitlab.New(
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http.HandlerFunc(details),
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gitlab.WithClientID(*clientID),
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gitlab.WithClientSecret(*clientSecret),
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gitlab.WithRedirectURL(*redirectURL),
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gitlab.WithScope("read_user", "api"),
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)
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case "github":
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auther = github.New(
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http.HandlerFunc(details),
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github.WithClientID(*clientID),
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github.WithClientSecret(*clientSecret),
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github.WithScope("repo", "user", "read:org"),
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)
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case "bitbucket":
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auther = bitbucket.New(
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http.HandlerFunc(details),
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bitbucket.WithClientID(*clientID),
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bitbucket.WithClientSecret(*clientSecret),
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bitbucket.WithRedirectURL(*redirectURL),
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)
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}
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// handles the authorization flow and displays the
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// authorization results at completion.
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http.Handle("/login", auther)
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http.Handle("/login/form", http.HandlerFunc(form))
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// redirects the user to the login handler.
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http.Handle("/", http.RedirectHandler("/login", http.StatusSeeOther))
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http.ListenAndServe(*address, nil)
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}
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// returns the login credentials.
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func details(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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err := login.ErrorFrom(ctx)
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if err != nil {
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fmt.Fprintf(w, failure, err)
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return
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}
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token := login.TokenFrom(ctx)
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fmt.Fprintf(w, success, token.Access)
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}
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// display the login form.
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func form(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/html")
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fmt.Fprint(w, loginForm)
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}
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// html page displayed to collect credentials.
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var loginForm = `
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<form method="POST" action="/login">
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<input type="text" name="username" />
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<input type="password" name="password" />
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<input type="submit" />
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</form>
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`
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// html page displayed on success.
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var success = `
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<html>
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<body>
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<h1>Token</h1>
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<h2>%s</h2>
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</body>
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</html>
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`
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// html page displayed on failure.
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var failure = `
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<html>
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<body>
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<h1>Error</h1>
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<h2>%s</h2>
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</body>
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</html>
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`
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func usage() {
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fmt.Println(`Usage: go run main.go [OPTION]...
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|
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--provider oauth provider (github, gitlab, gogs, gitea, bitbucket)
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--provider-url oauth provider url (gitea, gogs only)
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--client-id oauth client id
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--client-secret oauth client secret
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--redirect-url oauth redirect url
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--address http server address (:8080)
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--help display this help and exit`)
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}
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