mirror of
https://codeberg.org/superseriousbusiness/gotosocial.git
synced 2024-12-21 16:34:26 +03:00
123 lines
3.5 KiB
Go
123 lines
3.5 KiB
Go
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package middleware
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import (
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"bytes"
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"fmt"
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"net/http"
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"path"
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"text/template"
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)
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func SwaggerUIOAuth2Callback(opts SwaggerUIOpts, next http.Handler) http.Handler {
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opts.EnsureDefaults()
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pth := opts.OAuthCallbackURL
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tmpl := template.Must(template.New("swaggeroauth").Parse(swaggerOAuthTemplate))
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buf := bytes.NewBuffer(nil)
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_ = tmpl.Execute(buf, &opts)
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b := buf.Bytes()
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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if path.Join(r.URL.Path) == pth {
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rw.Header().Set("Content-Type", "text/html; charset=utf-8")
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rw.WriteHeader(http.StatusOK)
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_, _ = rw.Write(b)
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return
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}
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if next == nil {
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rw.Header().Set("Content-Type", "text/plain")
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rw.WriteHeader(http.StatusNotFound)
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_, _ = rw.Write([]byte(fmt.Sprintf("%q not found", pth)))
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return
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}
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next.ServeHTTP(rw, r)
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})
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}
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const (
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swaggerOAuthTemplate = `
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>{{ .Title }}</title>
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</head>
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<body>
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<script>
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'use strict';
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function run () {
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var oauth2 = window.opener.swaggerUIRedirectOauth2;
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var sentState = oauth2.state;
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var redirectUrl = oauth2.redirectUrl;
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var isValid, qp, arr;
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if (/code|token|error/.test(window.location.hash)) {
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qp = window.location.hash.substring(1).replace('?', '&');
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} else {
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qp = location.search.substring(1);
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}
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arr = qp.split("&");
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arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';});
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qp = qp ? JSON.parse('{' + arr.join() + '}',
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function (key, value) {
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return key === "" ? value : decodeURIComponent(value);
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}
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) : {};
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isValid = qp.state === sentState;
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if ((
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oauth2.auth.schema.get("flow") === "accessCode" ||
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oauth2.auth.schema.get("flow") === "authorizationCode" ||
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oauth2.auth.schema.get("flow") === "authorization_code"
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) && !oauth2.auth.code) {
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if (!isValid) {
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oauth2.errCb({
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authId: oauth2.auth.name,
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source: "auth",
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level: "warning",
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message: "Authorization may be unsafe, passed state was changed in server. The passed state wasn't returned from auth server."
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});
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}
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if (qp.code) {
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delete oauth2.state;
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oauth2.auth.code = qp.code;
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oauth2.callback({auth: oauth2.auth, redirectUrl: redirectUrl});
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} else {
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let oauthErrorMsg;
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if (qp.error) {
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oauthErrorMsg = "["+qp.error+"]: " +
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(qp.error_description ? qp.error_description+ ". " : "no accessCode received from the server. ") +
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(qp.error_uri ? "More info: "+qp.error_uri : "");
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}
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oauth2.errCb({
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authId: oauth2.auth.name,
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source: "auth",
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level: "error",
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message: oauthErrorMsg || "[Authorization failed]: no accessCode received from the server."
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});
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}
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} else {
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oauth2.callback({auth: oauth2.auth, token: qp, isValid: isValid, redirectUrl: redirectUrl});
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}
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window.close();
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}
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if (document.readyState !== 'loading') {
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run();
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} else {
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document.addEventListener('DOMContentLoaded', function () {
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run();
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});
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}
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</script>
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</body>
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</html>
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`
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)
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