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