mojo/shell/mojo_url_resolver.cc

   1 // Copyright 2014 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 "mojo/shell/mojo_url_resolver.h"
   6
   7 #include "base/base_paths.h"
   8 #include "base/files/file_path.h"
   9 #include "base/logging.h"
  10 #include "base/path_service.h"
  11 #include "net/base/filename_util.h"
  12 #include "url/url_util.h"
  13
  14 namespace mojo {
  15 namespace shell {
  16 namespace {
  17
  18 std::string MakeSharedLibraryName(const std::string& host_name) {
  19 #if defined(OS_WIN)
  20   return host_name + ".dll";
  21 #elif defined(OS_LINUX) || defined(OS_ANDROID)
  22   return "lib" + host_name + ".so";
  23 #elif defined(OS_MACOSX)
  24   return host_name + ".so";
  25 #else
  26   NOTREACHED() << "dynamic loading of services not supported";
  27   return std::string();
  28 #endif
  29 }
  30
  31 }  // namespace
  32
  33 MojoURLResolver::MojoURLResolver() {
  34   // Needed to treat first component of mojo URLs as host, not path.
  35   url::AddStandardScheme("mojo");
  36 }
  37
  38 MojoURLResolver::~MojoURLResolver() {
  39 }
  40
  41 void MojoURLResolver::AddCustomMapping(const GURL& mojo_url,
  42                                        const GURL& resolved_url) {
  43   url_map_[mojo_url] = resolved_url;
  44 }
  45
  46 void MojoURLResolver::AddLocalFileMapping(const GURL& mojo_url) {
  47   local_file_set_.insert(mojo_url);
  48 }
  49
  50 GURL MojoURLResolver::Resolve(const GURL& mojo_url) const {
  51   std::map<GURL, GURL>::const_iterator it = url_map_.find(mojo_url);
  52   if (it != url_map_.end())
  53     return it->second;
  54
  55   std::string lib = MakeSharedLibraryName(mojo_url.host());
  56
  57   if (local_file_set_.find(mojo_url) != local_file_set_.end()) {
  58     // Resolve to a local file URL.
  59     base::FilePath path;
  60     PathService::Get(base::DIR_MODULE, &path);
  61     path = path.Append(base::FilePath::FromUTF8Unsafe(lib));
  62     return net::FilePathToFileURL(path);
  63   }
  64
  65   // Otherwise, resolve to an URL relative to origin_.
  66   return GURL(origin_ + "/" + lib);
  67 }
  68
  69 }  // namespace shell
  70 }  // namespace mojo