Add export function to WebUI certificate viewer.

chrome/browser/ui/webui/certificate_viewer.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/json/json_writer.h"
+#include "base/i18n/time_formatting.h"
 #include "base/utf_string_conversions.h"
 #include "base/string_number_conversions.h"
 #include "chrome/browser/ui/webui/certificate_viewer.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/gtk/certificate_dialogs.h"
 #include "chrome/browser/ui/views/html_dialog_view.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/common/net/x509_certificate_model.h"
+#include "content/browser/tab_contents/tab_contents.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "grit/generated_resources.h"
 
 namespace {
 
 // Default width/height of the dialog.
 const int kDefaultWidth = 450;
 const int kDefaultHeight = 450;
 
 }  // namespace
 
 // Shows a certificate using the WebUI certificate viewer.
 void ShowCertificateViewer(gfx::NativeWindow parent,
                            net::X509Certificate* cert) {
   CertificateViewerDialog::ShowDialog(parent, cert);
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// CertificateViewerDialog
+
 void CertificateViewerDialog::ShowDialog(gfx::NativeWindow owning_window,
                                          net::X509Certificate* cert) {
   Browser* browser = BrowserList::GetLastActive();
   DCHECK(browser);
   browser->BrowserShowHtmlDialog(new CertificateViewerDialog(cert),
                                  owning_window);
 }
 
-// TODO(flackr): This is duplicated from cookies_view_handler.cc
-// Encodes a pointer value into a hex string.
-std::string PointerToHexString(const void* pointer) {
-  return base::HexEncode(&pointer, sizeof(pointer));
-}
-
 CertificateViewerDialog::CertificateViewerDialog(net::X509Certificate* cert)
     : cert_(cert) {
-  // Construct the JSON string with a pointer to the stored certificate.
-  DictionaryValue args;
-  args.SetString("cert", PointerToHexString(cert_));
-  base::JSONWriter::Write(&args, false, &json_args_);
-
   // Construct the dialog title from the certificate.
   net::X509Certificate::OSCertHandles cert_chain;
   x509_certificate_model::GetCertChainFromCert(cert_->os_cert_handle(),
       &cert_chain);
   title_ = l10n_util::GetStringFUTF16(IDS_CERT_INFO_DIALOG_TITLE,
       UTF8ToUTF16(x509_certificate_model::GetTitle(cert_chain.front())));
 }
 
 bool CertificateViewerDialog::IsDialogModal() const {
   return false;
 }
 
 string16 CertificateViewerDialog::GetDialogTitle() const {
   return title_;
 }
 
 GURL CertificateViewerDialog::GetDialogContentURL() const {
   return GURL(chrome::kChromeUICertificateViewerURL);
 }
 
 void CertificateViewerDialog::GetWebUIMessageHandlers(
     std::vector<WebUIMessageHandler*>* handlers) const {
+  handlers->push_back(new CertificateViewerDialogHandler(cert_));
 }
 
 void CertificateViewerDialog::GetDialogSize(gfx::Size* size) const {
   size->SetSize(kDefaultWidth, kDefaultHeight);
 }
 
 std::string CertificateViewerDialog::GetDialogArgs() const {
-  return json_args_;
+  return std::string();
 }
 
 void CertificateViewerDialog::OnDialogClosed(const std::string& json_retval) {
   delete this;
 }
 
 void CertificateViewerDialog::OnCloseContents(TabContents* source,
                                               bool* out_close_dialog) {
   if (out_close_dialog)
     *out_close_dialog = true;
 }
 
 bool CertificateViewerDialog::ShouldShowDialogTitle() const {
   return true;
 }
 
 bool CertificateViewerDialog::HandleContextMenu(
     const ContextMenuParams& params) {
   return true;
 }
+
+////////////////////////////////////////////////////////////////////////////////
+// CertificateViewerDialogHandler
+
+CertificateViewerDialogHandler::CertificateViewerDialogHandler(
+    net::X509Certificate* cert) : cert_(cert) {
+  x509_certificate_model::GetCertChainFromCert(cert_->os_cert_handle(),
+      &cert_chain_);
+}
+
+void CertificateViewerDialogHandler::RegisterMessages() {
+  web_ui_->RegisterMessageCallback("ExportCertificate",
+      NewCallback(this,
+          &CertificateViewerDialogHandler::ExportCertificate));
+  web_ui_->RegisterMessageCallback("RequestCertificateInfo",
+      NewCallback(this,
+          &CertificateViewerDialogHandler::RequestCertificateInfo));
+  web_ui_->RegisterMessageCallback("RequestCertificateFields",
+      NewCallback(this,
+          &CertificateViewerDialogHandler::RequestCertificateFields));
+}
+
+void CertificateViewerDialogHandler::ExportCertificate(
+    const base::ListValue* args) {
+  int cert_index;
+  std::string val;
+  if (!(args->GetString(0, &val)))

[Rick Byers, 2011/08/09 17:29:18]

You should be able to use GetDouble here rather than going through a string (I
think I saw somewhere that it was the preferred style now - even though most
WebUI still passes args as strings).  I spent a few minutes trying to look into
how this works (and whether GetInteger might automatically do the truncation
too) but it's not obvious to me where this is coming from (V8ValueConverter
perhaps).

[flackr, 2011/08/09 18:25:15]

Done. Both ways seemed a little ugly. I tried using GetInteger but the Javscript
always passes it as a double and it won't automatically truncate.

[Rick Byers, 2011/08/09 20:03:41]

Yeah, Javascript has only doubles, so at least this makes some sense..

+    return;
+  if (!(base::StringToInt(val, &cert_index)))
+    return;
+  if (cert_index < 0 || cert_index >= (int)cert_chain_.size())
+    return;
+  ShowCertExportDialog(web_ui_->tab_contents(),
+                       web_ui_->tab_contents()->GetDialogRootWindow(),
+                       cert_chain_[cert_index]);
+}
+

[flackr, 2011/08/09 15:51:27]

The following code is moved from
chrome/browser/ui/webui/certificate_viewer_ui.cc with minor changes to how the
certificate is selected (first few lines).

+void CertificateViewerDialogHandler::RequestCertificateInfo(
+    const base::ListValue* args) {
+  // Certificate information. The keys in this dictionary's general key
+  // correspond to the IDs in the Html page.
+  DictionaryValue cert_info;
+  net::X509Certificate::OSCertHandle cert_hnd = cert_->os_cert_handle();
+
+  // Get the certificate chain.
+  net::X509Certificate::OSCertHandles cert_chain;
+  x509_certificate_model::GetCertChainFromCert(cert_hnd, &cert_chain);
+
+  // Certificate usage.
+  std::vector<std::string> usages;
+  x509_certificate_model::GetUsageStrings(cert_hnd, &usages);
+  std::string usagestr;
+  for (std::vector<std::string>::iterator it = usages.begin();
+      it != usages.end(); ++it) {
+    if (usagestr.length() > 0) {
+      usagestr += "\n";
+    }
+    usagestr += *it;
+  }
+  cert_info.SetString("general.usages", usagestr);
+
+  // Standard certificate details.
+  const std::string alternative_text =
+      l10n_util::GetStringUTF8(IDS_CERT_INFO_FIELD_NOT_PRESENT);
+  cert_info.SetString("general.title", l10n_util::GetStringFUTF8(
+      IDS_CERT_INFO_DIALOG_TITLE, UTF8ToUTF16(x509_certificate_model::GetTitle(
+          cert_chain.front()))));
+
+  // Issued to information.
+  cert_info.SetString("general.issued-cn",
+      x509_certificate_model::GetSubjectCommonName(cert_hnd, alternative_text));
+  cert_info.SetString("general.issued-o",
+      x509_certificate_model::GetSubjectOrgName(cert_hnd, alternative_text));
+  cert_info.SetString("general.issued-ou",
+      x509_certificate_model::GetSubjectOrgUnitName(cert_hnd,
+                                                    alternative_text));
+  cert_info.SetString("general.issued-sn",
+      x509_certificate_model::GetSerialNumberHexified(cert_hnd,
+                                                      alternative_text));
+
+  // Issuer information.
+  cert_info.SetString("general.issuer-cn",
+      x509_certificate_model::GetIssuerCommonName(cert_hnd, alternative_text));
+  cert_info.SetString("general.issuer-o",
+      x509_certificate_model::GetIssuerOrgName(cert_hnd, alternative_text));
+  cert_info.SetString("general.issuer-ou",
+      x509_certificate_model::GetIssuerOrgUnitName(cert_hnd, alternative_text));
+
+  // Validity period.
+  base::Time issued, expires;
+  std::string issued_str, expires_str;
+  if (x509_certificate_model::GetTimes(cert_hnd, &issued, &expires)) {
+    issued_str = UTF16ToUTF8(
+        base::TimeFormatShortDateNumeric(issued));
+    expires_str = UTF16ToUTF8(
+        base::TimeFormatShortDateNumeric(expires));
+  } else {
+    issued_str = alternative_text;
+    expires_str = alternative_text;
+  }
+  cert_info.SetString("general.issue-date", issued_str);
+  cert_info.SetString("general.expiry-date", expires_str);
+
+  cert_info.SetString("general.sha256",
+      x509_certificate_model::HashCertSHA256(cert_hnd));
+  cert_info.SetString("general.sha1",
+      x509_certificate_model::HashCertSHA1(cert_hnd));
+
+  // Certificate hierarchy is constructed from bottom up.
+  ListValue* children = NULL;
+  int index = 0;
+  for (net::X509Certificate::OSCertHandles::const_iterator i =
+      cert_chain.begin(); i != cert_chain.end(); ++i, ++index) {
+    DictionaryValue* cert_node = new DictionaryValue();
+    ListValue cert_details;
+    cert_node->SetString("label", x509_certificate_model::GetTitle(*i).c_str());
+    cert_node->SetString("payload.index", base::IntToString(index));
+    // Add the child from the previous iteration.
+    if (children)
+      cert_node->Set("children", children);
+
+    // Add this node to the children list for the next iteration.
+    children = new ListValue();
+    children->Append(cert_node);
+  }
+  // Set the last node as the top of the certificate hierarchy.
+  cert_info.Set("hierarchy", children);
+
+  // Send certificate information to javascript.
+  web_ui_->CallJavascriptFunction("cert_viewer.getCertificateInfo", cert_info);
+}
+
+void CertificateViewerDialogHandler::RequestCertificateFields(
+    const base::ListValue* args) {
+  int cert_index;
+  std::string val;
+  if (!(args->GetString(0, &val)))
+    return;
+  if (!(base::StringToInt(val, &cert_index)))
+    return;
+  if (cert_index < 0 || cert_index >= (int)cert_chain_.size())
+    return;
+  net::X509Certificate::OSCertHandle cert = cert_chain_[cert_index];
+
+  ListValue root_list;
+  DictionaryValue* node_details;
+  DictionaryValue* alt_node_details;
+  ListValue* cert_sub_fields;
+  root_list.Append(node_details = new DictionaryValue());
+  node_details->SetString("label", x509_certificate_model::GetTitle(cert));
+
+  ListValue* cert_fields;
+  node_details->Set("children", cert_fields = new ListValue());
+  cert_fields->Append(node_details = new DictionaryValue());
+
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_CERTIFICATE));
+  node_details->Set("children", cert_fields = new ListValue());
+
+  // Main certificate fields.
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_VERSION));
+  std::string version = x509_certificate_model::GetVersion(cert);
+  if (!version.empty())
+    node_details->SetString("payload.val",
+        l10n_util::GetStringFUTF8(IDS_CERT_DETAILS_VERSION_FORMAT,
+                                  UTF8ToUTF16(version)));
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_SERIAL_NUMBER));
+  node_details->SetString("payload.val",
+      x509_certificate_model::GetSerialNumberHexified(cert,
+          l10n_util::GetStringUTF8(IDS_CERT_INFO_FIELD_NOT_PRESENT)));
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_CERTIFICATE_SIG_ALG));
+  node_details->SetString("payload.val",
+      x509_certificate_model::ProcessSecAlgorithmSignature(cert));
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_ISSUER));
+  node_details->SetString("payload.val",
+      x509_certificate_model::GetIssuerName(cert));
+
+  // Validity period.
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_VALIDITY));
+
+  node_details->Set("children", cert_sub_fields = new ListValue());
+  cert_sub_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_NOT_BEFORE));
+  cert_sub_fields->Append(alt_node_details = new DictionaryValue());
+  alt_node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_NOT_AFTER));
+  base::Time issued, expires;
+  if (x509_certificate_model::GetTimes(cert, &issued, &expires)) {
+    node_details->SetString("payload.val",
+        UTF16ToUTF8(base::TimeFormatShortDateAndTime(issued)));
+    alt_node_details->SetString("payload.val",
+        UTF16ToUTF8(base::TimeFormatShortDateAndTime(expires)));
+  }
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_SUBJECT));
+  node_details->SetString("payload.val",
+      x509_certificate_model::GetSubjectName(cert));
+
+  // Subject key information.
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_SUBJECT_KEY_INFO));
+
+  node_details->Set("children", cert_sub_fields = new ListValue());
+  cert_sub_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_SUBJECT_KEY_ALG));
+  node_details->SetString("payload.val",
+      x509_certificate_model::ProcessSecAlgorithmSubjectPublicKey(cert));
+  cert_sub_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_SUBJECT_KEY));
+  node_details->SetString("payload.val",
+      x509_certificate_model::ProcessSubjectPublicKeyInfo(cert));
+
+  // Extensions.
+  x509_certificate_model::Extensions extensions;
+  x509_certificate_model::GetExtensions(
+      l10n_util::GetStringUTF8(IDS_CERT_EXTENSION_CRITICAL),
+      l10n_util::GetStringUTF8(IDS_CERT_EXTENSION_NON_CRITICAL),
+      cert, &extensions);
+
+  if (!extensions.empty()) {
+    cert_fields->Append(node_details = new DictionaryValue());
+    node_details->SetString("label",
+        l10n_util::GetStringUTF8(IDS_CERT_DETAILS_EXTENSIONS));
+
+    node_details->Set("children", cert_sub_fields = new ListValue());
+    for (x509_certificate_model::Extensions::const_iterator i =
+         extensions.begin(); i != extensions.end(); ++i) {
+      cert_sub_fields->Append(node_details = new DictionaryValue());
+      node_details->SetString("label", i->name);
+      node_details->SetString("payload.val", i->value);
+    }
+  }
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_CERTIFICATE_SIG_ALG));
+  node_details->SetString("payload.val",
+      x509_certificate_model::ProcessSecAlgorithmSignatureWrap(cert));
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_DETAILS_CERTIFICATE_SIG_VALUE));
+  node_details->SetString("payload.val",
+      x509_certificate_model::ProcessRawBitsSignatureWrap(cert));
+
+  cert_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_INFO_FINGERPRINTS_GROUP));
+  node_details->Set("children", cert_sub_fields = new ListValue());
+
+  cert_sub_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_INFO_SHA256_FINGERPRINT_LABEL));
+  node_details->SetString("payload.val",
+      x509_certificate_model::HashCertSHA256(cert));
+  cert_sub_fields->Append(node_details = new DictionaryValue());
+  node_details->SetString("label",
+      l10n_util::GetStringUTF8(IDS_CERT_INFO_SHA1_FINGERPRINT_LABEL));
+  node_details->SetString("payload.val",
+      x509_certificate_model::HashCertSHA1(cert));
+
+  // Send certificate information to javascript.
+  web_ui_->CallJavascriptFunction("cert_viewer.getCertificateFields",
+      root_list);
+}