Windows: Add an "Open in Adobe Reader" menu item for PDF files in the download shelf.

chrome/browser/ui/pdf/adobe_reader_info_win.cc

+// Copyright 2014 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 "chrome/browser/ui/pdf/adobe_reader_info_win.h"
+
+#include <shlwapi.h>
+
+#include <algorithm>
+#include <vector>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/file_version_info.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/plugins/plugin_finder.h"
+#include "chrome/browser/plugins/plugin_metadata.h"
+#include "chrome/browser/plugins/plugin_prefs.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "content/public/browser/plugin_service.h"
+#include "content/public/common/registry_utils_win.h"
+
+namespace {
+
+// Hardcoded value for the secure version of Acrobat Reader.
+const char kSecureVersion[] = "11.0.7.79";
+
+const char kAdobeReaderIdentifier[] = "adobe-reader";
+const char kPdfMimeType[] = "application/pdf";
+
+bool IsPdfMimeType(const content::WebPluginMimeType& plugin_mime_type) {
+  return plugin_mime_type.mime_type == kPdfMimeType;
+}
+
+AdobeReaderPluginInfo GetReaderPlugin(
+    Profile* profile,
+    const std::vector<content::WebPluginInfo>& plugins) {
+  AdobeReaderPluginInfo reader_info;
+  reader_info.is_installed = false;
+  reader_info.is_enabled = false;
+  reader_info.is_secure = false;
+
+  PluginFinder* plugin_finder = PluginFinder::GetInstance();
+  for (size_t i = 0; i < plugins.size(); ++i) {
+    const content::WebPluginInfo& plugin = plugins[i];
+    if (plugin.is_pepper_plugin())
+      continue;
+    if (std::find_if(plugin.mime_types.begin(), plugin.mime_types.end(),
+                     IsPdfMimeType) == plugin.mime_types.end())
+      continue;
+    scoped_ptr<PluginMetadata> plugin_metadata(
+        plugin_finder->GetPluginMetadata(plugins[i]));
+    if (plugin_metadata->identifier() != kAdobeReaderIdentifier)
+      continue;
+
+    reader_info.is_installed = true;
+
+    if (profile) {
+      PluginPrefs* plugin_prefs = PluginPrefs::GetForProfile(profile);
+      PluginPrefs::PolicyStatus plugin_status =
+          plugin_prefs->PolicyStatusForPlugin(plugin_metadata->name());
+      reader_info.is_enabled = plugin_status != PluginPrefs::POLICY_DISABLED;
+    }
+
+    PluginMetadata::SecurityStatus security_status =
+        plugin_metadata->GetSecurityStatus(plugins[i]);
+    reader_info.is_secure =
+        security_status == PluginMetadata::SECURITY_STATUS_UP_TO_DATE;
+
+    reader_info.plugin_info = plugins[i];
+    break;
+  }
+  return reader_info;
+}
+
+void OnGotPluginInfo(Profile* profile,
+                     const GetAdobeReaderPluginInfoCallback& callback,
+                     const std::vector<content::WebPluginInfo>& plugins) {
+  if (!g_browser_process->profile_manager()->IsValidProfile(profile))
+    profile = NULL;
+  callback.Run(GetReaderPlugin(profile, plugins));
+}
+
+bool IsAdobeReaderDefaultPDFViewerInternal(base::FilePath* path) {
+  base::char16 app_cmd_buf[MAX_PATH];
+  DWORD app_cmd_buf_len = MAX_PATH;
+  HRESULT hr = AssocQueryString(ASSOCF_NONE, ASSOCSTR_COMMAND, L".pdf", L"open",
+                                app_cmd_buf, &app_cmd_buf_len);
+  if (FAILED(hr))
+    return false;
+
+  // Looks for the install paths for Acrobat / Reader.
+  base::FilePath install_path;
+  bool has_reader = content::GetInstalledPath(
+      content::kRegistryAcrobatReader, &install_path);
+  if (has_reader) {
+    install_path = install_path.Append(content::kRegistryAcrobatReader);
+  } else {
+    has_reader = content::GetInstalledPath(
+        content::kRegistryAcrobat, &install_path);
+    if (has_reader)
+      install_path = install_path.Append(content::kRegistryAcrobat);
+    else
+      return false;
+  }
+
+  base::string16 app_cmd(app_cmd_buf);
+  bool found = app_cmd.find(install_path.value()) != base::string16::npos;
+  if (found && path)
+    *path = install_path;
+  return found;
+}
+
+}  // namespace
+
+void GetAdobeReaderPluginInfoAsync(
+    Profile* profile,
+    const GetAdobeReaderPluginInfoCallback& callback) {
+  DCHECK(!callback.is_null());
+  content::PluginService::GetInstance()->GetPlugins(
+      base::Bind(&OnGotPluginInfo, profile, callback));
+}
+
+bool GetAdobeReaderPluginInfo(Profile* profile,
+                              AdobeReaderPluginInfo* reader_info) {
+  DCHECK(reader_info);
+  std::vector<content::WebPluginInfo> plugins;
+  bool up_to_date = content::PluginService::GetInstance()->GetPluginInfoArray(
+      GURL(), kPdfMimeType, false, &plugins, NULL);
+  *reader_info = GetReaderPlugin(profile, plugins);
+  return up_to_date;
+}
+
+bool IsAdobeReaderDefaultPDFViewer() {
+  return IsAdobeReaderDefaultPDFViewerInternal(NULL);
+}
+
+bool IsAdobeReaderUpToDate() {
+  base::FilePath install_path;
+  bool is_default = IsAdobeReaderDefaultPDFViewerInternal(&install_path);
+  if (!is_default)
+    return false;
+
+  scoped_ptr<FileVersionInfo> file_version_info(
+      FileVersionInfo::CreateFileVersionInfo(install_path));
+  if (!file_version_info)
+    return false;
+
+  std::string reader_version =
+      base::UTF16ToUTF8(file_version_info->product_version());
+  // Convert 1.2.03.45 to 1.2.3.45 so base::Version considers it as valid.
+  for (int i = 1; i <= 9; ++i) {
+    std::string from = base::StringPrintf(".0%d", i);
+    std::string to = base::StringPrintf(".%d", i);
+    ReplaceSubstringsAfterOffset(&reader_version, 0, from, to);
+  }
+  base::Version file_version(reader_version);
+  return file_version.IsValid() && !file_version.IsOlderThan(kSecureVersion);

[jam, 2014/06/19 16:37:06]

what if IsAdobeReaderDefaultPDFViewerInternal returns the path to Adobe Acrobat,
I'm guessing that'll have a different secure version?

[Lei Zhang, 2014/06/19 18:12:30]

http://www.adobe.com/support/downloads/product.jsp?product=1&platform=Windows
seems to indicate the latest is 11.0.7, which is the same as Reader. I don't
have a copy to verify the revision number is 79+ though.

+}