extensions/common/manifest_handlers/webview_info.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 "extensions/common/manifest_handlers/webview_info.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "base/strings/string_util.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "base/values.h"
  12 #include "extensions/common/error_utils.h"
  13 #include "extensions/common/manifest.h"
  14 #include "extensions/common/manifest_constants.h"
  15
  16 namespace extensions {
  17
  18 namespace keys = extensions::manifest_keys;
  19 namespace errors = extensions::manifest_errors;
  20
  21 namespace {
  22
  23 const WebviewInfo* GetResourcesInfo(
  24     const Extension& extension) {
  25   return static_cast<WebviewInfo*>(
  26       extension.GetManifestData(keys::kWebviewAccessibleResources));
  27 }
  28
  29 }  // namespace
  30
  31 // A PartitionItem represents a set of accessible resources given a partition
  32 // ID pattern.
  33 class PartitionItem {
  34  public:
  35   explicit PartitionItem(const std::string& partition_pattern)
  36       : partition_pattern_(partition_pattern) {
  37   }
  38
  39   virtual ~PartitionItem() {
  40   }
  41
  42   bool Matches(const std::string& partition_id) const {
  43     return MatchPattern(partition_id, partition_pattern_);
  44   }
  45
  46   // Adds a pattern to the set. Returns true if a new pattern was inserted,
  47   // false if the pattern was already in the set.
  48   bool AddPattern(const URLPattern& pattern) {
  49     return accessible_resources_.AddPattern(pattern);
  50   }
  51
  52   const URLPatternSet& accessible_resources() const {
  53     return accessible_resources_;
  54   }
  55  private:
  56   // A pattern string that matches partition IDs.
  57   const std::string partition_pattern_;
  58   // A URL pattern set of resources accessible to the given
  59   // |partition_pattern_|.
  60   URLPatternSet accessible_resources_;
  61 };
  62
  63
  64 WebviewInfo::WebviewInfo() {
  65 }
  66
  67 WebviewInfo::~WebviewInfo() {
  68 }
  69
  70 // static
  71 bool WebviewInfo::IsResourceWebviewAccessible(
  72     const Extension* extension,
  73     const std::string& partition_id,
  74     const std::string& relative_path) {
  75   if (!extension)
  76     return false;
  77
  78   const WebviewInfo* info = GetResourcesInfo(*extension);
  79   if (!info)
  80     return false;
  81
  82   for (size_t i = 0; i < info->partition_items_.size(); ++i) {
  83     const PartitionItem* const item = info->partition_items_[i];
  84     if (item->Matches(partition_id) &&
  85         extension->ResourceMatches(item->accessible_resources(),
  86                                    relative_path)) {
  87       return true;
  88     }
  89   }
  90
  91   return false;
  92 }
  93
  94 void WebviewInfo::AddPartitionItem(scoped_ptr<PartitionItem> item) {
  95   partition_items_.push_back(item.release());
  96 }
  97
  98 WebviewHandler::WebviewHandler() {
  99 }
 100
 101 WebviewHandler::~WebviewHandler() {
 102 }
 103
 104 bool WebviewHandler::Parse(Extension* extension, base::string16* error) {
 105   scoped_ptr<WebviewInfo> info(new WebviewInfo());
 106
 107   const base::DictionaryValue* dict_value = NULL;
 108   if (!extension->manifest()->GetDictionary(keys::kWebview,
 109                                             &dict_value)) {
 110     *error = base::ASCIIToUTF16(errors::kInvalidWebview);
 111     return false;
 112   }
 113
 114   const base::ListValue* partition_list = NULL;
 115   if (!dict_value->GetList(keys::kWebviewPartitions, &partition_list)) {
 116     *error = base::ASCIIToUTF16(errors::kInvalidWebviewPartitionsList);
 117     return false;
 118   }
 119
 120   // The partition list must have at least one entry.
 121   if (partition_list->GetSize() == 0) {
 122     *error = base::ASCIIToUTF16(errors::kInvalidWebviewPartitionsList);
 123     return false;
 124   }
 125
 126   for (size_t i = 0; i < partition_list->GetSize(); ++i) {
 127     const base::DictionaryValue* partition = NULL;
 128     if (!partition_list->GetDictionary(i, &partition)) {
 129       *error = ErrorUtils::FormatErrorMessageUTF16(
 130           errors::kInvalidWebviewPartition, base::IntToString(i));
 131       return false;
 132     }
 133
 134     std::string partition_pattern;
 135     if (!partition->GetString(keys::kWebviewName, &partition_pattern)) {
 136       *error = ErrorUtils::FormatErrorMessageUTF16(
 137           errors::kInvalidWebviewPartitionName, base::IntToString(i));
 138       return false;
 139     }
 140
 141     const base::ListValue* url_list = NULL;
 142     if (!partition->GetList(keys::kWebviewAccessibleResources,
 143                             &url_list)) {
 144       *error = base::ASCIIToUTF16(
 145           errors::kInvalidWebviewAccessibleResourcesList);
 146       return false;
 147     }
 148
 149     // The URL list should have at least one entry.
 150     if (url_list->GetSize() == 0) {
 151       *error = base::ASCIIToUTF16(
 152           errors::kInvalidWebviewAccessibleResourcesList);
 153       return false;
 154     }
 155
 156     scoped_ptr<PartitionItem> partition_item(
 157         new PartitionItem(partition_pattern));
 158
 159     for (size_t i = 0; i < url_list->GetSize(); ++i) {
 160       std::string relative_path;
 161       if (!url_list->GetString(i, &relative_path)) {
 162         *error = ErrorUtils::FormatErrorMessageUTF16(
 163             errors::kInvalidWebviewAccessibleResource, base::IntToString(i));
 164         return false;
 165       }
 166       URLPattern pattern(URLPattern::SCHEME_EXTENSION,
 167                          Extension::GetResourceURL(extension->url(),
 168                                                    relative_path).spec());
 169       partition_item->AddPattern(pattern);
 170     }
 171     info->AddPartitionItem(partition_item.Pass());
 172   }
 173
 174   extension->SetManifestData(keys::kWebviewAccessibleResources, info.release());
 175   return true;
 176 }
 177
 178 const std::vector<std::string> WebviewHandler::Keys() const {
 179   return SingleKey(keys::kWebview);
 180 }
 181
 182 }  // namespace extensions