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Store redirect URL in a session variable #58

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Mar 25, 2022
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16 changes: 7 additions & 9 deletions src/main/java/org/jenkinsci/plugins/GitLabSecurityRealm.java
Original file line number Diff line number Diff line change
Expand Up @@ -274,20 +274,20 @@ public HttpResponse doCommenceLogin(StaplerRequest request, @QueryParameter Stri
} else {
redirectOnFinish = Jenkins.get().getRootUrl();
}
request.getSession().setAttribute(REFERER_ATTRIBUTE, redirectOnFinish);

List<NameValuePair> parameters = new ArrayList<>();
parameters.add(new BasicNameValuePair("redirect_uri", buildRedirectUrl(request, redirectOnFinish)));
parameters.add(new BasicNameValuePair("redirect_uri", buildRedirectUrl(request)));
parameters.add(new BasicNameValuePair("response_type", "code"));
parameters.add(new BasicNameValuePair("client_id", clientID));
parameters.add(new BasicNameValuePair("scope", "api"));

return new HttpRedirect(gitlabWebUri + "/oauth/authorize?" + URLEncodedUtils.format(parameters, StandardCharsets.UTF_8));
}

private String buildRedirectUrl(StaplerRequest request, String referer) throws MalformedURLException {
private String buildRedirectUrl(StaplerRequest request) throws MalformedURLException {
URL currentUrl = new URL(Jenkins.get().getRootUrl());
List<NameValuePair> parameters = new ArrayList<>();
parameters.add(new BasicNameValuePair("state", referer));

URL redirect_uri = new URL(currentUrl.getProtocol(), currentUrl.getHost(), currentUrl.getPort(),
request.getContextPath() + "/securityRealm/finishLogin?" + URLEncodedUtils.format(parameters, StandardCharsets.UTF_8));
Expand All @@ -305,16 +305,14 @@ public HttpResponse doFinishLogin(StaplerRequest request) throws IOException {
Log.info("doFinishLogin: missing code or private_token.");
return HttpResponses.redirectToContextRoot();
}

String state = request.getParameter("state");

String referer = (String)request.getSession().getAttribute(REFERER_ATTRIBUTE);
HttpPost httpPost = new HttpPost(gitlabWebUri + "/oauth/token");
List<NameValuePair> parameters = new ArrayList<>();
parameters.add(new BasicNameValuePair("client_id", clientID));
parameters.add(new BasicNameValuePair("client_secret", clientSecret));
parameters.add(new BasicNameValuePair("code", code));
parameters.add(new BasicNameValuePair("grant_type", "authorization_code"));
parameters.add(new BasicNameValuePair("redirect_uri", buildRedirectUrl(request, state)));
parameters.add(new BasicNameValuePair("redirect_uri", buildRedirectUrl(request)));
httpPost.setEntity(new UrlEncodedFormEntity(parameters, StandardCharsets.UTF_8));

CloseableHttpClient httpclient = HttpClients.createDefault();
Expand Down Expand Up @@ -366,8 +364,8 @@ public HttpResponse doFinishLogin(StaplerRequest request) throws IOException {
Log.info("GitLab did not return an access token.");
}

if (StringUtils.isNotBlank(state)) {
return HttpResponses.redirectTo(state);
if (StringUtils.isNotBlank(referer)) {
return HttpResponses.redirectTo(referer);
}
return HttpResponses.redirectToContextRoot();
}
Expand Down