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 // static
  62 bool WebviewInfo::IsResourceWebviewAccessible(
  63     const Extension* extension,
  64     const std::string& partition_id,
  65     const std::string& relative_path) {
  66   if (!extension)
  67     return false;
  68
  69   const WebviewInfo* webview_info = static_cast<const WebviewInfo*>(
  70       extension->GetManifestData(keys::kWebviewAccessibleResources));
  71   if (!webview_info)
  72     return false;
  73
  74   for (const PartitionItem* item : webview_info->partition_items_) {
  75     if (item->Matches(partition_id) &&
  76         extension->ResourceMatches(item->accessible_resources(),
  77                                    relative_path)) {
  78       return true;
  79     }
  80   }
  81
  82   return false;
  83 }
  84
  85 void WebviewInfo::AddPartitionItem(scoped_ptr<PartitionItem> item) {
  86   partition_items_.push_back(item.release());
  87 }
  88
  89 WebviewHandler::WebviewHandler() {
  90 }
  91
  92 WebviewHandler::~WebviewHandler() {
  93 }
  94
  95 bool WebviewHandler::Parse(Extension* extension, base::string16* error) {
  96   scoped_ptr<WebviewInfo> info(new WebviewInfo(extension->id()));
  97
  98   const base::DictionaryValue* dict_value = NULL;
  99   if (!extension->manifest()->GetDictionary(keys::kWebview,
 100                                             &dict_value)) {
 101     *error = base::ASCIIToUTF16(errors::kInvalidWebview);
 102     return false;
 103   }
 104
 105   const base::ListValue* partition_list = NULL;
 106   if (!dict_value->GetList(keys::kWebviewPartitions, &partition_list)) {
 107     *error = base::ASCIIToUTF16(errors::kInvalidWebviewPartitionsList);
 108     return false;
 109   }
 110
 111   // The partition list must have at least one entry.
 112   if (partition_list->GetSize() == 0) {
 113     *error = base::ASCIIToUTF16(errors::kInvalidWebviewPartitionsList);
 114     return false;
 115   }
 116
 117   for (size_t i = 0; i < partition_list->GetSize(); ++i) {
 118     const base::DictionaryValue* partition = NULL;
 119     if (!partition_list->GetDictionary(i, &partition)) {
 120       *error = ErrorUtils::FormatErrorMessageUTF16(
 121           errors::kInvalidWebviewPartition, base::IntToString(i));
 122       return false;
 123     }
 124
 125     std::string partition_pattern;
 126     if (!partition->GetString(keys::kWebviewName, &partition_pattern)) {
 127       *error = ErrorUtils::FormatErrorMessageUTF16(
 128           errors::kInvalidWebviewPartitionName, base::IntToString(i));
 129       return false;
 130     }
 131
 132     const base::ListValue* url_list = NULL;
 133     if (!partition->GetList(keys::kWebviewAccessibleResources,
 134                             &url_list)) {
 135       *error = base::ASCIIToUTF16(
 136           errors::kInvalidWebviewAccessibleResourcesList);
 137       return false;
 138     }
 139
 140     // The URL list should have at least one entry.
 141     if (url_list->GetSize() == 0) {
 142       *error = base::ASCIIToUTF16(
 143           errors::kInvalidWebviewAccessibleResourcesList);
 144       return false;
 145     }
 146
 147     scoped_ptr<PartitionItem> partition_item(
 148         new PartitionItem(partition_pattern));
 149
 150     for (size_t i = 0; i < url_list->GetSize(); ++i) {
 151       std::string relative_path;
 152       if (!url_list->GetString(i, &relative_path)) {
 153         *error = ErrorUtils::FormatErrorMessageUTF16(
 154             errors::kInvalidWebviewAccessibleResource, base::IntToString(i));
 155         return false;
 156       }
 157       URLPattern pattern(URLPattern::SCHEME_EXTENSION,
 158                          Extension::GetResourceURL(extension->url(),
 159                                                    relative_path).spec());
 160       partition_item->AddPattern(pattern);
 161     }
 162     info->AddPartitionItem(partition_item.Pass());
 163   }
 164
 165   extension->SetManifestData(keys::kWebviewAccessibleResources, info.release());
 166   return true;
 167 }
 168
 169 const std::vector<std::string> WebviewHandler::Keys() const {
 170   return SingleKey(keys::kWebview);
 171 }
 172
 173 }  // namespace extensions