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 "content/renderer/history_serialization.h" 6 7 #include "content/common/page_state_serialization.h" 8 #include "content/public/common/page_state.h" 9 #include "content/renderer/history_entry.h" 10 #include "third_party/WebKit/public/platform/WebFloatPoint.h" 11 #include "third_party/WebKit/public/platform/WebHTTPBody.h" 12 #include "third_party/WebKit/public/platform/WebPoint.h" 13 #include "third_party/WebKit/public/platform/WebString.h" 14 #include "third_party/WebKit/public/platform/WebVector.h" 15 #include "third_party/WebKit/public/web/WebHistoryItem.h" 16 #include "third_party/WebKit/public/web/WebSerializedScriptValue.h" 17 18 using blink::WebHTTPBody; 19 using blink::WebHistoryItem; 20 using blink::WebSerializedScriptValue; 21 using blink::WebString; 22 using blink::WebVector; 23 24 namespace content { 25 namespace { 26 27 void ToNullableString16Vector(const WebVector<WebString>& input, 28 std::vector<base::NullableString16>* output) { 29 output->reserve(input.size()); 30 for (size_t i = 0; i < input.size(); ++i) 31 output->push_back(input[i]); 32 } 33 34 void ToExplodedHttpBodyElement(const WebHTTPBody::Element& input, 35 ExplodedHttpBodyElement* output) { 36 switch (input.type) { 37 case WebHTTPBody::Element::TypeData: 38 output->data.assign(input.data.data(), input.data.size()); 39 break; 40 case WebHTTPBody::Element::TypeFile: 41 output->file_path = input.filePath; 42 output->file_start = input.fileStart; 43 output->file_length = input.fileLength; 44 output->file_modification_time = input.modificationTime; 45 break; 46 case WebHTTPBody::Element::TypeFileSystemURL: 47 output->filesystem_url = input.fileSystemURL; 48 output->file_start = input.fileStart; 49 output->file_length = input.fileLength; 50 output->file_modification_time = input.modificationTime; 51 break; 52 case WebHTTPBody::Element::TypeBlob: 53 output->blob_uuid = input.blobUUID.utf8(); 54 break; 55 } 56 } 57 58 void AppendHTTPBodyElement(const ExplodedHttpBodyElement& element, 59 WebHTTPBody* http_body) { 60 switch (element.type) { 61 case WebHTTPBody::Element::TypeData: 62 http_body->appendData(element.data); 63 break; 64 case WebHTTPBody::Element::TypeFile: 65 http_body->appendFileRange( 66 element.file_path, 67 element.file_start, 68 element.file_length, 69 element.file_modification_time); 70 break; 71 case WebHTTPBody::Element::TypeFileSystemURL: 72 http_body->appendFileSystemURLRange( 73 element.filesystem_url, 74 element.file_start, 75 element.file_length, 76 element.file_modification_time); 77 break; 78 case WebHTTPBody::Element::TypeBlob: 79 http_body->appendBlob(WebString::fromUTF8(element.blob_uuid)); 80 break; 81 } 82 } 83 84 void GenerateFrameStateFromItem(const WebHistoryItem& item, 85 ExplodedFrameState* state) { 86 state->url_string = item.urlString(); 87 state->referrer = item.referrer(); 88 state->referrer_policy = item.referrerPolicy(); 89 state->target = item.target(); 90 if (!item.stateObject().isNull()) 91 state->state_object = item.stateObject().toString(); 92 state->pinch_viewport_scroll_offset = item.pinchViewportScrollOffset(); 93 state->scroll_offset = item.scrollOffset(); 94 state->item_sequence_number = item.itemSequenceNumber(); 95 state->document_sequence_number = 96 item.documentSequenceNumber(); 97 state->page_scale_factor = item.pageScaleFactor(); 98 ToNullableString16Vector(item.documentState(), &state->document_state); 99 100 state->http_body.http_content_type = item.httpContentType(); 101 const WebHTTPBody& http_body = item.httpBody(); 102 if (!(state->http_body.is_null = http_body.isNull())) { 103 state->http_body.identifier = http_body.identifier(); 104 state->http_body.elements.resize(http_body.elementCount()); 105 for (size_t i = 0; i < http_body.elementCount(); ++i) { 106 WebHTTPBody::Element element; 107 http_body.elementAt(i, element); 108 ToExplodedHttpBodyElement(element, &state->http_body.elements[i]); 109 } 110 state->http_body.contains_passwords = http_body.containsPasswordData(); 111 } 112 } 113 114 void RecursivelyGenerateFrameState(HistoryEntry::HistoryNode* node, 115 ExplodedFrameState* state) { 116 GenerateFrameStateFromItem(node->item(), state); 117 118 std::vector<HistoryEntry::HistoryNode*>& children = node->children(); 119 state->children.resize(children.size()); 120 for (size_t i = 0; i < children.size(); ++i) 121 RecursivelyGenerateFrameState(children[i], &state->children[i]); 122 } 123 124 void RecursivelyGenerateHistoryItem(const ExplodedFrameState& state, 125 HistoryEntry::HistoryNode* node) { 126 WebHistoryItem item; 127 item.initialize(); 128 item.setURLString(state.url_string); 129 item.setReferrer(state.referrer, state.referrer_policy); 130 item.setTarget(state.target); 131 if (!state.state_object.is_null()) { 132 item.setStateObject( 133 WebSerializedScriptValue::fromString(state.state_object)); 134 } 135 item.setDocumentState(state.document_state); 136 item.setPinchViewportScrollOffset(state.pinch_viewport_scroll_offset); 137 item.setScrollOffset(state.scroll_offset); 138 item.setPageScaleFactor(state.page_scale_factor); 139 140 // These values are generated at WebHistoryItem construction time, and we 141 // only want to override those new values with old values if the old values 142 // are defined. A value of 0 means undefined in this context. 143 if (state.item_sequence_number) 144 item.setItemSequenceNumber(state.item_sequence_number); 145 if (state.document_sequence_number) 146 item.setDocumentSequenceNumber(state.document_sequence_number); 147 148 item.setHTTPContentType(state.http_body.http_content_type); 149 if (!state.http_body.is_null) { 150 WebHTTPBody http_body; 151 http_body.initialize(); 152 http_body.setIdentifier(state.http_body.identifier); 153 for (size_t i = 0; i < state.http_body.elements.size(); ++i) 154 AppendHTTPBodyElement(state.http_body.elements[i], &http_body); 155 item.setHTTPBody(http_body); 156 } 157 node->set_item(item); 158 159 for (size_t i = 0; i < state.children.size(); ++i) 160 RecursivelyGenerateHistoryItem(state.children[i], node->AddChild()); 161 } 162 163 } // namespace 164 165 PageState HistoryEntryToPageState(HistoryEntry* entry) { 166 ExplodedPageState state; 167 ToNullableString16Vector(entry->root().getReferencedFilePaths(), 168 &state.referenced_files); 169 170 RecursivelyGenerateFrameState(entry->root_history_node(), &state.top); 171 172 std::string encoded_data; 173 if (!EncodePageState(state, &encoded_data)) 174 return PageState(); 175 176 return PageState::CreateFromEncodedData(encoded_data); 177 } 178 179 PageState SingleHistoryItemToPageState(const WebHistoryItem& item) { 180 ExplodedPageState state; 181 ToNullableString16Vector(item.getReferencedFilePaths(), 182 &state.referenced_files); 183 GenerateFrameStateFromItem(item, &state.top); 184 185 std::string encoded_data; 186 if (!EncodePageState(state, &encoded_data)) 187 return PageState(); 188 189 return PageState::CreateFromEncodedData(encoded_data); 190 } 191 192 scoped_ptr<HistoryEntry> PageStateToHistoryEntry(const PageState& page_state) { 193 ExplodedPageState state; 194 if (!DecodePageState(page_state.ToEncodedData(), &state)) 195 return scoped_ptr<HistoryEntry>(); 196 197 scoped_ptr<HistoryEntry> entry(new HistoryEntry()); 198 RecursivelyGenerateHistoryItem(state.top, entry->root_history_node()); 199 200 return entry.Pass(); 201 } 202 203 } // namespace content 204
