1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "chrome/browser/chromeos/attestation/attestation_ca_client.h"
6
7 #include <string>
8
9 #include "chrome/browser/browser_process.h"
10 #include "net/base/load_flags.h"
11 #include "net/http/http_status_code.h"
12 #include "net/url_request/url_fetcher.h"
13 #include "net/url_request/url_request_status.h"
14 #include "url/gurl.h"
15
16 namespace {
17
18 const char kCertificateRequestURL[] = "https://chromeos-ca.gstatic.com/sign";
19 const char kEnrollRequestURL[] = "https://chromeos-ca.gstatic.com/enroll";
20 const char kMimeContentType[] = "application/octet-stream";
21
22 } // namespace
23
24 namespace chromeos {
25 namespace attestation {
26
AttestationCAClient()27 AttestationCAClient::AttestationCAClient() {}
28
~AttestationCAClient()29 AttestationCAClient::~AttestationCAClient() {}
30
SendEnrollRequest(const std::string & request,const DataCallback & on_response)31 void AttestationCAClient::SendEnrollRequest(const std::string& request,
32 const DataCallback& on_response) {
33 FetchURL(kEnrollRequestURL, request, on_response);
34 }
35
SendCertificateRequest(const std::string & request,const DataCallback & on_response)36 void AttestationCAClient::SendCertificateRequest(
37 const std::string& request,
38 const DataCallback& on_response) {
39 FetchURL(kCertificateRequestURL, request, on_response);
40 }
41
OnURLFetchComplete(const net::URLFetcher * source)42 void AttestationCAClient::OnURLFetchComplete(const net::URLFetcher* source) {
43 FetcherCallbackMap::iterator iter = pending_requests_.find(source);
44 if (iter == pending_requests_.end()) {
45 LOG(WARNING) << "Callback from unknown source.";
46 return;
47 }
48
49 DataCallback callback = iter->second;
50 pending_requests_.erase(iter);
51 scoped_ptr<const net::URLFetcher> scoped_source(source);
52
53 if (source->GetStatus().status() != net::URLRequestStatus::SUCCESS) {
54 LOG(ERROR) << "Attestation CA request failed, status: "
55 << source->GetStatus().status() << ", error: "
56 << source->GetStatus().error();
57 callback.Run(false, "");
58 return;
59 }
60
61 if (source->GetResponseCode() != net::HTTP_OK) {
62 LOG(ERROR) << "Attestation CA sent an error response: "
63 << source->GetResponseCode();
64 callback.Run(false, "");
65 return;
66 }
67
68 std::string response;
69 bool result = source->GetResponseAsString(&response);
70 DCHECK(result) << "Invalid fetcher setting.";
71
72 // Run the callback last because it may delete |this|.
73 callback.Run(true, response);
74 }
75
FetchURL(const std::string & url,const std::string & request,const DataCallback & on_response)76 void AttestationCAClient::FetchURL(const std::string& url,
77 const std::string& request,
78 const DataCallback& on_response) {
79 // The first argument allows the use of TestURLFetcherFactory in tests.
80 net::URLFetcher* fetcher = net::URLFetcher::Create(0,
81 GURL(url),
82 net::URLFetcher::POST,
83 this);
84 fetcher->SetRequestContext(g_browser_process->system_request_context());
85 fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
86 net::LOAD_DO_NOT_SAVE_COOKIES |
87 net::LOAD_DISABLE_CACHE);
88 fetcher->SetUploadData(kMimeContentType, request);
89 pending_requests_[fetcher] = on_response;
90 fetcher->Start();
91 }
92
93 } // namespace attestation
94 } // namespace chromeos
95