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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.
#include "chrome/browser/extensions/extension_permissions_api_helpers.h"
#include "base/values.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_error_utils.h"
#include "chrome/common/extensions/extension_permission_set.h"
#include "chrome/common/extensions/url_pattern_set.h"
namespace extensions {
namespace permissions_api {
namespace {
const char kInvalidOrigin[] =
"Invalid value for origin pattern *: *";
const char kUnknownPermissionError[] =
"'*' is not a recognized permission.";
const char kApisKey[] = "permissions";
const char kOriginsKey[] = "origins";
} // namespace
DictionaryValue* PackPermissionsToValue(const ExtensionPermissionSet* set) {
DictionaryValue* value = new DictionaryValue();
// Generate the list of API permissions.
ListValue* apis = new ListValue();
ExtensionPermissionsInfo* info = ExtensionPermissionsInfo::GetInstance();
for (ExtensionAPIPermissionSet::const_iterator i = set->apis().begin();
i != set->apis().end(); ++i)
apis->Append(Value::CreateStringValue(info->GetByID(*i)->name()));
// Generate the list of origin permissions.
URLPatternSet hosts = set->explicit_hosts();
ListValue* origins = new ListValue();
for (URLPatternSet::const_iterator i = hosts.begin(); i != hosts.end(); ++i)
origins->Append(Value::CreateStringValue(i->GetAsString()));
value->Set(kApisKey, apis);
value->Set(kOriginsKey, origins);
return value;
}
// Creates a new ExtensionPermissionSet from its |value| and passes ownership to
// the caller through |ptr|. Sets |bad_message| to true if the message is badly
// formed. Returns false if the method fails to unpack a permission set.
bool UnpackPermissionsFromValue(DictionaryValue* value,
scoped_refptr<ExtensionPermissionSet>* ptr,
bool* bad_message,
std::string* error) {
ExtensionPermissionsInfo* info = ExtensionPermissionsInfo::GetInstance();
ExtensionAPIPermissionSet apis;
if (value->HasKey(kApisKey)) {
ListValue* api_list = NULL;
if (!value->GetList(kApisKey, &api_list)) {
*bad_message = true;
return false;
}
for (size_t i = 0; i < api_list->GetSize(); ++i) {
std::string api_name;
if (!api_list->GetString(i, &api_name)) {
*bad_message = true;
return false;
}
ExtensionAPIPermission* permission = info->GetByName(api_name);
if (!permission) {
*error = ExtensionErrorUtils::FormatErrorMessage(
kUnknownPermissionError, api_name);
return false;
}
apis.insert(permission->id());
}
}
URLPatternSet origins;
if (value->HasKey(kOriginsKey)) {
ListValue* origin_list = NULL;
if (!value->GetList(kOriginsKey, &origin_list)) {
*bad_message = true;
return false;
}
for (size_t i = 0; i < origin_list->GetSize(); ++i) {
std::string pattern;
if (!origin_list->GetString(i, &pattern)) {
*bad_message = true;
return false;
}
URLPattern origin(Extension::kValidHostPermissionSchemes);
URLPattern::ParseResult parse_result = origin.Parse(pattern);
if (URLPattern::PARSE_SUCCESS != parse_result) {
*error = ExtensionErrorUtils::FormatErrorMessage(
kInvalidOrigin,
pattern,
URLPattern::GetParseResultString(parse_result));
return false;
}
origins.AddPattern(origin);
}
}
*ptr = new ExtensionPermissionSet(apis, origins, URLPatternSet());
return true;
}
} // namespace permissions_api
} // namespace extensions
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