components/nacl/renderer/json_manifest.h

   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 #ifndef COMPONENTS_NACL_RENDERER_JSON_MANIFEST_H
   6 #define COMPONENTS_NACL_RENDERER_JSON_MANIFEST_H
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "components/nacl/renderer/ppb_nacl_private.h"
  12 #include "ppapi/c/pp_array_output.h"
  13 #include "third_party/jsoncpp/source/include/json/value.h"
  14
  15 namespace nacl {
  16 class JsonManifest;
  17 class NexeLoadManager;
  18
  19 class JsonManifest {
  20  public:
  21   struct ErrorInfo {
  22     PP_NaClError error;
  23     std::string string;
  24   };
  25
  26   JsonManifest(const std::string& manifest_base_url,
  27                const std::string& sandbox_isa,
  28                bool nonsfi_enabled,
  29                bool pnacl_debug);
  30
  31   // Initialize the manifest object for use by later lookups. Returns
  32   // true if the manifest parses correctly and matches the schema.
  33   bool Init(const std::string& json_manifest, ErrorInfo* error_info);
  34
  35   // Gets the full program URL for the current sandbox ISA from the
  36   // manifest file.
  37   bool GetProgramURL(std::string* full_url,
  38                      PP_PNaClOptions* pnacl_options,
  39                      bool* uses_nonsfi_mode,
  40                      ErrorInfo* error_info) const;
  41
  42   // Resolves a key from the "files" section to a fully resolved URL,
  43   // i.e., relative URL values are fully expanded relative to the
  44   // manifest's URL (via ResolveURL).
  45   // If there was an error, details are reported via error_info.
  46   bool ResolveKey(const std::string& key,
  47                   std::string* full_url,
  48                   PP_PNaClOptions* pnacl_options) const;
  49
  50  private:
  51   bool MatchesSchema(ErrorInfo* error_info);
  52   bool GetKeyUrl(const Json::Value& dictionary,
  53                  const std::string& key,
  54                  std::string* full_url,
  55                  PP_PNaClOptions* pnacl_options) const;
  56   bool GetURLFromISADictionary(const Json::Value& dictionary,
  57                                const std::string& parent_key,
  58                                std::string* url,
  59                                PP_PNaClOptions* pnacl_options,
  60                                bool* uses_nonsfi_mode,
  61                                ErrorInfo* error_info) const;
  62
  63   std::string manifest_base_url_;
  64   std::string sandbox_isa_;
  65   bool nonsfi_enabled_;
  66   bool pnacl_debug_;
  67
  68   // The dictionary of manifest information parsed in Init().
  69   Json::Value dictionary_;
  70 };
  71
  72 }  // namespace nacl
  73
  74 #endif  // COMPONENTS_NACL_RENDERER_JSON_MANIFEST_H