mac: Zip packages when they are selected by the file opener.

chrome/browser/file_select_helper_mac.mm

+// 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/file_select_helper.h"
+
+#include <Cocoa/Cocoa.h>
+#include <sys/stat.h>
+
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/mac/foundation_util.h"
+#include "content/public/browser/browser_thread.h"
+#include "third_party/zlib/google/zip.h"
+#include "ui/shell_dialogs/selected_file_info.h"
+
+namespace {
+
+// Given the |path| of a package, returns the destination that the package
+// should be zipped to. Returns an empty path on any errors.
+base::FilePath ZipDestination(const base::FilePath& path) {
+  NSMutableString* dest =
+      [NSMutableString stringWithString:NSTemporaryDirectory()];
+
+  // Couldn't get the temporary directory.
+  if (!dest)
+    return base::FilePath();
+
+  [dest appendFormat:@"%@/zip_cache/%@",
+                     [[NSBundle mainBundle] bundleIdentifier],
+                     [[NSProcessInfo processInfo] globallyUniqueString]];
+
+  return base::mac::NSStringToFilePath(dest);
+}
+
+// Returns the path of the package and its components relative to the package's
+// parent directory.
+std::vector<base::FilePath> RelativePathsForPackage(
+    const base::FilePath& package) {
+  // Get the base directory.
+  base::FilePath base_dir = package.DirName();
+
+  // Add the package as the first relative path.
+  std::vector<base::FilePath> relative_paths;
+  relative_paths.push_back(package.BaseName());
+
+  // Add the components of the package as relative paths.
+  base::FileEnumerator file_enumerator(
+      package,
+      true /* recursive */,
+      base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES);
+  for (base::FilePath path = file_enumerator.Next(); !path.empty();
+       path = file_enumerator.Next()) {
+    base::FilePath relative_path;
+    bool success = base_dir.AppendRelativePath(path, &relative_path);
+    if (success)
+      relative_paths.push_back(relative_path);
+  }
+
+  return relative_paths;
+}
+
+}  // namespace
+
+base::FilePath FileSelectHelper::ZipPackage(const base::FilePath& path) {
+  base::FilePath dest(ZipDestination(path));
+  if (dest.empty())
+    return dest;
+
+  if (!base::CreateDirectory(dest.DirName()))
+    return base::FilePath();
+
+  base::File file(dest, base::File::FLAG_CREATE | base::File::FLAG_WRITE);
+  if (!file.IsValid())
+    return base::FilePath();
+
+  std::vector<base::FilePath> files_to_zip(RelativePathsForPackage(path));
+  base::FilePath base_dir = path.DirName();
+  bool success = zip::ZipFiles(base_dir, files_to_zip, file.GetPlatformFile());
+
+  int result = -1;
+  if (success)
+    result = fchmod(file.GetPlatformFile(), S_IRUSR);
+
+  return result >= 0 ? dest : base::FilePath();
+}
+
+void FileSelectHelper::ProcessSelectedFilesMac(
+    const std::vector<ui::SelectedFileInfo>& files) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::FILE_USER_BLOCKING);
+
+  // Make a mutable copy of the input files.
+  std::vector<ui::SelectedFileInfo> files_out(files);
+  std::vector<base::FilePath> temporary_files;
+
+  for (auto& file_info : files_out) {
+    NSString* filename = base::mac::FilePathToNSString(file_info.local_path);
+    BOOL isPackage =
+        [[NSWorkspace sharedWorkspace] isFilePackageAtPath:filename];
+    if (isPackage && base::DirectoryExists(file_info.local_path)) {
+      base::FilePath result = ZipPackage(file_info.local_path);
+
+      if (!result.empty()) {
+        temporary_files.push_back(result);
+        file_info.local_path = result;
+        file_info.file_path = result;
+        file_info.display_name.append(".zip");
+      }
+    }
+  }
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::UI,
+      FROM_HERE,
+      base::Bind(&FileSelectHelper::ProcessSelectedFilesMacOnUIThread,
+                 base::Unretained(this),
+                 files_out,
+                 temporary_files));
+}
+
+void FileSelectHelper::ProcessSelectedFilesMacOnUIThread(
+    const std::vector<ui::SelectedFileInfo>& files,
+    const std::vector<base::FilePath>& temporary_files) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  if (!temporary_files.empty()) {
+    temporary_files_.insert(
+        temporary_files_.end(), temporary_files.begin(), temporary_files.end());
+
+    // Typically, |temporary_files| are deleted after |web_contents_| is
+    // destroyed. If |web_contents_| is already NULL, then the temporary files
+    // need to be deleted now.
+    if (!web_contents_) {
+      DeleteTemporaryFiles();
+      RunFileChooserEnd();
+      return;
+    }
+  }
+
+  NotifyRenderViewHostAndEnd(files);
+}