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