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// Copyright (c) 2012 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.
#ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_RESOURCES_H_
#define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_RESOURCES_H_
#include <map>
#include <vector>
#include "native_client/src/include/nacl_macros.h"
#include "native_client/src/include/nacl_string.h"
#include "native_client/src/trusted/desc/nacl_desc_wrapper.h"
#include "ppapi/c/private/pp_file_handle.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/native_client/src/trusted/plugin/plugin_error.h"
namespace plugin {
class Manifest;
class Plugin;
class PnaclCoordinator;
// Constants for loading LLC and LD.
class PnaclUrls {
public:
// Get the base URL prefix for Pnacl resources (without platform prefix).
static nacl::string GetBaseUrl();
static bool IsPnaclComponent(const nacl::string& full_url);
static nacl::string PnaclComponentURLToFilename(
const nacl::string& full_url);
// Get the URL for the resource info JSON file that contains information
// about loadable resources.
static const nacl::string GetResourceInfoUrl() {
return nacl::string(kResourceInfoUrl);
}
private:
static const char kResourceInfoUrl[];
};
// Loads a list of resources, providing a way to get file descriptors for
// these resources. URLs for resources are resolved by the manifest
// and point to pnacl component filesystem resources.
class PnaclResources {
public:
PnaclResources(Plugin* plugin,
PnaclCoordinator* coordinator,
const Manifest* manifest)
: plugin_(plugin),
coordinator_(coordinator),
manifest_(manifest) {
}
virtual ~PnaclResources();
// Read the resource info JSON file. This is the first step after
// construction; it has to be completed before StartLoad is called.
virtual void ReadResourceInfo(
const nacl::string& resource_info_url,
const pp::CompletionCallback& resource_info_read_cb);
// Start loading the resources.
virtual void StartLoad(
const pp::CompletionCallback& all_loaded_callback);
const nacl::string& GetLlcUrl() {
return llc_tool_name;
}
const nacl::string& GetLdUrl() {
return ld_tool_name;
}
nacl::string GetFullUrl(const nacl::string& partial_url,
const nacl::string& sandbox_arch) const;
// Get file descs by name. Only valid after StartLoad's completion callback
// fired.
nacl::DescWrapper* WrapperForUrl(const nacl::string& url);
static int32_t GetPnaclFD(Plugin* plugin, const char* filename);
private:
NACL_DISALLOW_COPY_AND_ASSIGN(PnaclResources);
// The plugin requesting the resource loading.
Plugin* plugin_;
// The coordinator responsible for reporting errors, etc.
PnaclCoordinator* coordinator_;
// The manifest for looking up resource URLs.
const Manifest* manifest_;
// The descriptor wrappers for the downloaded URLs. Only valid
// once all_loaded_callback_ has been invoked.
std::map<nacl::string, nacl::DescWrapper*> resource_wrappers_;
// Tool names for llc and ld; read from the resource info file.
nacl::string llc_tool_name;
nacl::string ld_tool_name;
// Parses resource info json data in |buf|. Returns true if successful.
// Otherwise returns false and places an error message in |errmsg|.
bool ParseResourceInfo(const nacl::string& buf, nacl::string& errmsg);
// Convenience function for reporting an error while reading the resource
// info file.
void ReadResourceInfoError(const nacl::string& msg);
};
} // namespace plugin;
#endif // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_RESOURCES_H_
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