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      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 "lib" + host_name + ".dylib";
     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 #if defined(OS_ANDROID)
     61     // On Android, additional lib are bundled.
     62     PathService::Get(base::DIR_MODULE, &path);
     63 #else
     64     PathService::Get(base::DIR_EXE, &path);
     65 #if !defined(OS_WIN)
     66     path = path.Append(FILE_PATH_LITERAL("lib"));
     67 #endif  // !defined(OS_WIN)
     68 #endif  // defined(OS_ANDROID)
     69     path = path.Append(base::FilePath::FromUTF8Unsafe(lib));
     70     return net::FilePathToFileURL(path);
     71   }
     72 
     73   // Otherwise, resolve to an URL relative to origin_.
     74   return GURL(origin_ + "/" + lib);
     75 }
     76 
     77 }  // namespace shell
     78 }  // namespace mojo
     79