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| 1 // Copyright (c) 2012 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 "components/autofill/browser/form_structure.h" | |
| 6 | |
| 7 #include <utility> | |
| 8 | |
| 9 #include "base/basictypes.h" | |
| 10 #include "base/command_line.h" | |
| 11 #include "base/logging.h" | |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "base/sha1.h" | |
| 14 #include "base/strings/string_number_conversions.h" | |
| 15 #include "base/strings/string_util.h" | |
| 16 #include "base/strings/stringprintf.h" | |
| 17 #include "base/strings/utf_string_conversions.h" | |
| 18 #include "base/time.h" | |
| 19 #include "components/autofill/browser/autofill_metrics.h" | |
| 20 #include "components/autofill/browser/autofill_type.h" | |
| 21 #include "components/autofill/browser/autofill_xml_parser.h" | |
| 22 #include "components/autofill/browser/field_types.h" | |
| 23 #include "components/autofill/browser/form_field.h" | |
| 24 #include "components/autofill/content/browser/autocheckout_page_meta_data.h" | |
| 25 #include "components/autofill/core/common/autofill_constants.h" | |
| 26 #include "components/autofill/core/common/form_data.h" | |
| 27 #include "components/autofill/core/common/form_data_predictions.h" | |
| 28 #include "components/autofill/core/common/form_field_data.h" | |
| 29 #include "components/autofill/core/common/form_field_data_predictions.h" | |
| 30 #include "third_party/libjingle/source/talk/xmllite/xmlelement.h" | |
| 31 | |
| 32 namespace autofill { | |
| 33 namespace { | |
| 34 | |
| 35 const char kFormMethodPost[] = "post"; | |
| 36 | |
| 37 // XML elements and attributes. | |
| 38 const char kAttributeAcceptedFeatures[] = "accepts"; | |
| 39 const char kAttributeAutofillUsed[] = "autofillused"; | |
| 40 const char kAttributeAutofillType[] = "autofilltype"; | |
| 41 const char kAttributeClientVersion[] = "clientversion"; | |
| 42 const char kAttributeDataPresent[] = "datapresent"; | |
| 43 const char kAttributeFieldID[] = "fieldid"; | |
| 44 const char kAttributeFieldType[] = "fieldtype"; | |
| 45 const char kAttributeFormSignature[] = "formsignature"; | |
| 46 const char kAttributeName[] = "name"; | |
| 47 const char kAttributeSignature[] = "signature"; | |
| 48 const char kAttributeUrlprefixSignature[] = "urlprefixsignature"; | |
| 49 const char kAcceptedFeaturesExperiment[] = "e"; // e=experiments | |
| 50 const char kAcceptedFeaturesAutocheckoutExperiment[] = "a,e"; // a=autocheckout | |
| 51 const char kClientVersion[] = "6.1.1715.1442/en (GGLL)"; | |
| 52 const char kXMLDeclaration[] = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"; | |
| 53 const char kXMLElementAutofillQuery[] = "autofillquery"; | |
| 54 const char kXMLElementAutofillUpload[] = "autofillupload"; | |
| 55 const char kXMLElementFieldAssignments[] = "fieldassignments"; | |
| 56 const char kXMLElementField[] = "field"; | |
| 57 const char kXMLElementFields[] = "fields"; | |
| 58 const char kXMLElementForm[] = "form"; | |
| 59 const char kBillingSection[] = "billing"; | |
| 60 const char kShippingSection[] = "shipping"; | |
| 61 | |
| 62 // Helper for |EncodeUploadRequest()| that creates a bit field corresponding to | |
| 63 // |available_field_types| and returns the hex representation as a string. | |
| 64 std::string EncodeFieldTypes(const FieldTypeSet& available_field_types) { | |
| 65 // There are |MAX_VALID_FIELD_TYPE| different field types and 8 bits per byte, | |
| 66 // so we need ceil(MAX_VALID_FIELD_TYPE / 8) bytes to encode the bit field. | |
| 67 const size_t kNumBytes = (MAX_VALID_FIELD_TYPE + 0x7) / 8; | |
| 68 | |
| 69 // Pack the types in |available_field_types| into |bit_field|. | |
| 70 std::vector<uint8> bit_field(kNumBytes, 0); | |
| 71 for (FieldTypeSet::const_iterator field_type = available_field_types.begin(); | |
| 72 field_type != available_field_types.end(); | |
| 73 ++field_type) { | |
| 74 // Set the appropriate bit in the field. The bit we set is the one | |
| 75 // |field_type| % 8 from the left of the byte. | |
| 76 const size_t byte = *field_type / 8; | |
| 77 const size_t bit = 0x80 >> (*field_type % 8); | |
| 78 DCHECK(byte < bit_field.size()); | |
| 79 bit_field[byte] |= bit; | |
| 80 } | |
| 81 | |
| 82 // Discard any trailing zeroes. | |
| 83 // If there are no available types, we return the empty string. | |
| 84 size_t data_end = bit_field.size(); | |
| 85 for (; data_end > 0 && !bit_field[data_end - 1]; --data_end) { | |
| 86 } | |
| 87 | |
| 88 // Print all meaningfull bytes into a string. | |
| 89 std::string data_presence; | |
| 90 data_presence.reserve(data_end * 2 + 1); | |
| 91 for (size_t i = 0; i < data_end; ++i) { | |
| 92 base::StringAppendF(&data_presence, "%02x", bit_field[i]); | |
| 93 } | |
| 94 | |
| 95 return data_presence; | |
| 96 } | |
| 97 | |
| 98 // Helper for |EncodeFormRequest()| that creates XmlElements for the given field | |
| 99 // in upload xml, and also add them to the parent XmlElement. | |
| 100 void EncodeFieldForUpload(const AutofillField& field, | |
| 101 buzz::XmlElement* parent) { | |
| 102 // Don't upload checkable fields. | |
| 103 if (field.is_checkable) | |
| 104 return; | |
| 105 | |
| 106 FieldTypeSet types = field.possible_types(); | |
| 107 // |types| could be empty in unit-tests only. | |
| 108 for (FieldTypeSet::iterator field_type = types.begin(); | |
| 109 field_type != types.end(); ++field_type) { | |
| 110 buzz::XmlElement *field_element = new buzz::XmlElement( | |
| 111 buzz::QName(kXMLElementField)); | |
| 112 | |
| 113 field_element->SetAttr(buzz::QName(kAttributeSignature), | |
| 114 field.FieldSignature()); | |
| 115 field_element->SetAttr(buzz::QName(kAttributeAutofillType), | |
| 116 base::IntToString(*field_type)); | |
| 117 parent->AddElement(field_element); | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 // Helper for |EncodeFormRequest()| that creates XmlElement for the given field | |
| 122 // in query xml, and also add it to the parent XmlElement. | |
| 123 void EncodeFieldForQuery(const AutofillField& field, | |
| 124 buzz::XmlElement* parent) { | |
| 125 buzz::XmlElement *field_element = new buzz::XmlElement( | |
| 126 buzz::QName(kXMLElementField)); | |
| 127 field_element->SetAttr(buzz::QName(kAttributeSignature), | |
| 128 field.FieldSignature()); | |
| 129 parent->AddElement(field_element); | |
| 130 } | |
| 131 | |
| 132 // Helper for |EncodeFormRequest()| that creates XmlElements for the given field | |
| 133 // in field assignments xml, and also add them to the parent XmlElement. | |
| 134 void EncodeFieldForFieldAssignments(const AutofillField& field, | |
| 135 buzz::XmlElement* parent) { | |
| 136 FieldTypeSet types = field.possible_types(); | |
| 137 for (FieldTypeSet::iterator field_type = types.begin(); | |
| 138 field_type != types.end(); ++field_type) { | |
| 139 buzz::XmlElement *field_element = new buzz::XmlElement( | |
| 140 buzz::QName(kXMLElementFields)); | |
| 141 | |
| 142 field_element->SetAttr(buzz::QName(kAttributeFieldID), | |
| 143 field.FieldSignature()); | |
| 144 field_element->SetAttr(buzz::QName(kAttributeFieldType), | |
| 145 base::IntToString(*field_type)); | |
| 146 field_element->SetAttr(buzz::QName(kAttributeName), | |
| 147 UTF16ToUTF8(field.name)); | |
| 148 parent->AddElement(field_element); | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 // Returns |true| iff the |token| is a type hint for a contact field, as | |
| 153 // specified in the implementation section of http://is.gd/whatwg_autocomplete | |
| 154 // Note that "fax" and "pager" are intentionally ignored, as Chrome does not | |
| 155 // support filling either type of information. | |
| 156 bool IsContactTypeHint(const std::string& token) { | |
| 157 return token == "home" || token == "work" || token == "mobile"; | |
| 158 } | |
| 159 | |
| 160 // Returns |true| iff the |token| is a type hint appropriate for a field of the | |
| 161 // given |field_type|, as specified in the implementation section of | |
| 162 // http://is.gd/whatwg_autocomplete | |
| 163 bool ContactTypeHintMatchesFieldType(const std::string& token, | |
| 164 AutofillFieldType field_type) { | |
| 165 // The "home" and "work" type hints are only appropriate for email and phone | |
| 166 // number field types. | |
| 167 if (token == "home" || token == "work") { | |
| 168 return field_type == EMAIL_ADDRESS || | |
| 169 (field_type >= PHONE_HOME_NUMBER && | |
| 170 field_type <= PHONE_HOME_WHOLE_NUMBER); | |
| 171 } | |
| 172 | |
| 173 // The "mobile" type hint is only appropriate for phone number field types. | |
| 174 // Note that "fax" and "pager" are intentionally ignored, as Chrome does not | |
| 175 // support filling either type of information. | |
| 176 if (token == "mobile") { | |
| 177 return field_type >= PHONE_HOME_NUMBER && | |
| 178 field_type <= PHONE_HOME_WHOLE_NUMBER; | |
| 179 } | |
| 180 | |
| 181 return false; | |
| 182 } | |
| 183 | |
| 184 // Returns the Chrome Autofill-supported field type corresponding to the given | |
| 185 // |autocomplete_type|, if there is one, in the context of the given |field|. | |
| 186 // Chrome Autofill supports a subset of the field types listed at | |
| 187 // http://is.gd/whatwg_autocomplete | |
| 188 AutofillFieldType FieldTypeFromAutocompleteType( | |
| 189 const std::string& autocomplete_type, | |
| 190 const AutofillField& field) { | |
| 191 if (autocomplete_type == "name") | |
| 192 return NAME_FULL; | |
| 193 | |
| 194 if (autocomplete_type == "given-name") | |
| 195 return NAME_FIRST; | |
| 196 | |
| 197 if (autocomplete_type == "additional-name") { | |
| 198 if (field.max_length == 1) | |
| 199 return NAME_MIDDLE_INITIAL; | |
| 200 else | |
| 201 return NAME_MIDDLE; | |
| 202 } | |
| 203 | |
| 204 if (autocomplete_type == "family-name") | |
| 205 return NAME_LAST; | |
| 206 | |
| 207 if (autocomplete_type == "honorific-suffix") | |
| 208 return NAME_SUFFIX; | |
| 209 | |
| 210 if (autocomplete_type == "organization") | |
| 211 return COMPANY_NAME; | |
| 212 | |
| 213 if (autocomplete_type == "street-address" || | |
| 214 autocomplete_type == "address-line1") | |
| 215 return ADDRESS_HOME_LINE1; | |
| 216 | |
| 217 if (autocomplete_type == "address-line2") | |
| 218 return ADDRESS_HOME_LINE2; | |
| 219 | |
| 220 if (autocomplete_type == "locality") | |
| 221 return ADDRESS_HOME_CITY; | |
| 222 | |
| 223 if (autocomplete_type == "region") | |
| 224 return ADDRESS_HOME_STATE; | |
| 225 | |
| 226 if (autocomplete_type == "country") | |
| 227 return ADDRESS_HOME_COUNTRY; | |
| 228 | |
| 229 if (autocomplete_type == "postal-code") | |
| 230 return ADDRESS_HOME_ZIP; | |
| 231 | |
| 232 if (autocomplete_type == "cc-name") | |
| 233 return CREDIT_CARD_NAME; | |
| 234 | |
| 235 if (autocomplete_type == "cc-number") | |
| 236 return CREDIT_CARD_NUMBER; | |
| 237 | |
| 238 if (autocomplete_type == "cc-exp") { | |
| 239 if (field.max_length == 5) | |
| 240 return CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR; | |
| 241 else | |
| 242 return CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR; | |
| 243 } | |
| 244 | |
| 245 if (autocomplete_type == "cc-exp-month") | |
| 246 return CREDIT_CARD_EXP_MONTH; | |
| 247 | |
| 248 if (autocomplete_type == "cc-exp-year") { | |
| 249 if (field.max_length == 2) | |
| 250 return CREDIT_CARD_EXP_2_DIGIT_YEAR; | |
| 251 else | |
| 252 return CREDIT_CARD_EXP_4_DIGIT_YEAR; | |
| 253 } | |
| 254 | |
| 255 if (autocomplete_type == "cc-csc") | |
| 256 return CREDIT_CARD_VERIFICATION_CODE; | |
| 257 | |
| 258 if (autocomplete_type == "cc-type") | |
| 259 return CREDIT_CARD_TYPE; | |
| 260 | |
| 261 if (autocomplete_type == "tel") | |
| 262 return PHONE_HOME_WHOLE_NUMBER; | |
| 263 | |
| 264 if (autocomplete_type == "tel-country-code") | |
| 265 return PHONE_HOME_COUNTRY_CODE; | |
| 266 | |
| 267 if (autocomplete_type == "tel-national") | |
| 268 return PHONE_HOME_CITY_AND_NUMBER; | |
| 269 | |
| 270 if (autocomplete_type == "tel-area-code") | |
| 271 return PHONE_HOME_CITY_CODE; | |
| 272 | |
| 273 if (autocomplete_type == "tel-local") | |
| 274 return PHONE_HOME_NUMBER; | |
| 275 | |
| 276 if (autocomplete_type == "tel-local-prefix") | |
| 277 return PHONE_HOME_NUMBER; | |
| 278 | |
| 279 if (autocomplete_type == "tel-local-suffix") | |
| 280 return PHONE_HOME_NUMBER; | |
| 281 | |
| 282 if (autocomplete_type == "email") | |
| 283 return EMAIL_ADDRESS; | |
| 284 | |
| 285 return UNKNOWN_TYPE; | |
| 286 } | |
| 287 | |
| 288 } // namespace | |
| 289 | |
| 290 FormStructure::FormStructure(const FormData& form, | |
| 291 const std::string& autocheckout_url_prefix) | |
| 292 : form_name_(form.name), | |
| 293 source_url_(form.origin), | |
| 294 target_url_(form.action), | |
| 295 autofill_count_(0), | |
| 296 active_field_count_(0), | |
| 297 upload_required_(USE_UPLOAD_RATES), | |
| 298 server_experiment_id_("no server response"), | |
| 299 has_author_specified_types_(false), | |
| 300 autocheckout_url_prefix_(autocheckout_url_prefix), | |
| 301 filled_by_autocheckout_(false) { | |
| 302 // Copy the form fields. | |
| 303 std::map<base::string16, size_t> unique_names; | |
| 304 for (std::vector<FormFieldData>::const_iterator field = | |
| 305 form.fields.begin(); | |
| 306 field != form.fields.end(); field++) { | |
| 307 | |
| 308 if (!ShouldSkipField(*field)) { | |
| 309 // Add all supported form fields (including with empty names) to the | |
| 310 // signature. This is a requirement for Autofill servers. | |
| 311 form_signature_field_names_.append("&"); | |
| 312 form_signature_field_names_.append(UTF16ToUTF8(field->name)); | |
| 313 | |
| 314 ++active_field_count_; | |
| 315 } | |
| 316 | |
| 317 // Generate a unique name for this field by appending a counter to the name. | |
| 318 // Make sure to prepend the counter with a non-numeric digit so that we are | |
| 319 // guaranteed to avoid collisions. | |
| 320 if (!unique_names.count(field->name)) | |
| 321 unique_names[field->name] = 1; | |
| 322 else | |
| 323 ++unique_names[field->name]; | |
| 324 base::string16 unique_name = field->name + ASCIIToUTF16("_") + | |
| 325 base::IntToString16(unique_names[field->name]); | |
| 326 fields_.push_back(new AutofillField(*field, unique_name)); | |
| 327 } | |
| 328 | |
| 329 std::string method = UTF16ToUTF8(form.method); | |
| 330 if (StringToLowerASCII(method) == kFormMethodPost) { | |
| 331 method_ = POST; | |
| 332 } else { | |
| 333 // Either the method is 'get', or we don't know. In this case we default | |
| 334 // to GET. | |
| 335 method_ = GET; | |
| 336 } | |
| 337 } | |
| 338 | |
| 339 FormStructure::~FormStructure() {} | |
| 340 | |
| 341 void FormStructure::DetermineHeuristicTypes( | |
| 342 const AutofillMetrics& metric_logger) { | |
| 343 // First, try to detect field types based on each field's |autocomplete| | |
| 344 // attribute value. If there is at least one form field that specifies an | |
| 345 // autocomplete type hint, don't try to apply other heuristics to match fields | |
| 346 // in this form. | |
| 347 bool has_author_specified_sections; | |
| 348 ParseFieldTypesFromAutocompleteAttributes(&has_author_specified_types_, | |
| 349 &has_author_specified_sections); | |
| 350 | |
| 351 if (!has_author_specified_types_) { | |
| 352 FieldTypeMap field_type_map; | |
| 353 FormField::ParseFormFields(fields_.get(), &field_type_map); | |
| 354 for (size_t index = 0; index < field_count(); index++) { | |
| 355 AutofillField* field = fields_[index]; | |
| 356 FieldTypeMap::iterator iter = field_type_map.find(field->unique_name()); | |
| 357 if (iter != field_type_map.end()) | |
| 358 field->set_heuristic_type(iter->second); | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 UpdateAutofillCount(); | |
| 363 IdentifySections(has_author_specified_sections); | |
| 364 | |
| 365 if (IsAutofillable(true)) { | |
| 366 metric_logger.LogDeveloperEngagementMetric( | |
| 367 AutofillMetrics::FILLABLE_FORM_PARSED); | |
| 368 if (has_author_specified_types_) { | |
| 369 metric_logger.LogDeveloperEngagementMetric( | |
| 370 AutofillMetrics::FILLABLE_FORM_CONTAINS_TYPE_HINTS); | |
| 371 } | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 bool FormStructure::EncodeUploadRequest( | |
| 376 const FieldTypeSet& available_field_types, | |
| 377 bool form_was_autofilled, | |
| 378 std::string* encoded_xml) const { | |
| 379 DCHECK(ShouldBeCrowdsourced()); | |
| 380 | |
| 381 // Verify that |available_field_types| agrees with the possible field types we | |
| 382 // are uploading. | |
| 383 for (std::vector<AutofillField*>::const_iterator field = begin(); | |
| 384 field != end(); | |
| 385 ++field) { | |
| 386 for (FieldTypeSet::const_iterator type = (*field)->possible_types().begin(); | |
| 387 type != (*field)->possible_types().end(); | |
| 388 ++type) { | |
| 389 DCHECK(*type == UNKNOWN_TYPE || | |
| 390 *type == EMPTY_TYPE || | |
| 391 available_field_types.count(*type)); | |
| 392 } | |
| 393 } | |
| 394 | |
| 395 // Set up the <autofillupload> element and its attributes. | |
| 396 buzz::XmlElement autofill_request_xml( | |
| 397 (buzz::QName(kXMLElementAutofillUpload))); | |
| 398 autofill_request_xml.SetAttr(buzz::QName(kAttributeClientVersion), | |
| 399 kClientVersion); | |
| 400 autofill_request_xml.SetAttr(buzz::QName(kAttributeFormSignature), | |
| 401 FormSignature()); | |
| 402 autofill_request_xml.SetAttr(buzz::QName(kAttributeAutofillUsed), | |
| 403 form_was_autofilled ? "true" : "false"); | |
| 404 autofill_request_xml.SetAttr(buzz::QName(kAttributeDataPresent), | |
| 405 EncodeFieldTypes(available_field_types).c_str()); | |
| 406 | |
| 407 if (!EncodeFormRequest(FormStructure::UPLOAD, &autofill_request_xml)) | |
| 408 return false; // Malformed form, skip it. | |
| 409 | |
| 410 // Obtain the XML structure as a string. | |
| 411 *encoded_xml = kXMLDeclaration; | |
| 412 *encoded_xml += autofill_request_xml.Str().c_str(); | |
| 413 | |
| 414 // To enable this logging, run with the flag --vmodule="form_structure=2". | |
| 415 VLOG(2) << "\n" << *encoded_xml; | |
| 416 | |
| 417 return true; | |
| 418 } | |
| 419 | |
| 420 bool FormStructure::EncodeFieldAssignments( | |
| 421 const FieldTypeSet& available_field_types, | |
| 422 std::string* encoded_xml) const { | |
| 423 DCHECK(ShouldBeCrowdsourced()); | |
| 424 | |
| 425 // Set up the <fieldassignments> element and its attributes. | |
| 426 buzz::XmlElement autofill_request_xml( | |
| 427 (buzz::QName(kXMLElementFieldAssignments))); | |
| 428 autofill_request_xml.SetAttr(buzz::QName(kAttributeFormSignature), | |
| 429 FormSignature()); | |
| 430 | |
| 431 if (!EncodeFormRequest(FormStructure::FIELD_ASSIGNMENTS, | |
| 432 &autofill_request_xml)) | |
| 433 return false; // Malformed form, skip it. | |
| 434 | |
| 435 // Obtain the XML structure as a string. | |
| 436 *encoded_xml = kXMLDeclaration; | |
| 437 *encoded_xml += autofill_request_xml.Str().c_str(); | |
| 438 | |
| 439 return true; | |
| 440 } | |
| 441 | |
| 442 // static | |
| 443 bool FormStructure::EncodeQueryRequest( | |
| 444 const std::vector<FormStructure*>& forms, | |
| 445 std::vector<std::string>* encoded_signatures, | |
| 446 std::string* encoded_xml) { | |
| 447 DCHECK(encoded_signatures); | |
| 448 DCHECK(encoded_xml); | |
| 449 encoded_xml->clear(); | |
| 450 encoded_signatures->clear(); | |
| 451 encoded_signatures->reserve(forms.size()); | |
| 452 | |
| 453 // Set up the <autofillquery> element and attributes. | |
| 454 buzz::XmlElement autofill_request_xml( | |
| 455 (buzz::QName(kXMLElementAutofillQuery))); | |
| 456 autofill_request_xml.SetAttr(buzz::QName(kAttributeClientVersion), | |
| 457 kClientVersion); | |
| 458 | |
| 459 // autocheckout_url_prefix tells the Autofill server where the forms in the | |
| 460 // request came from, and the the Autofill server checks internal status and | |
| 461 // decide to enable Autocheckout or not and may return Autocheckout related | |
| 462 // data in the response accordingly. | |
| 463 // There is no page/frame level object associated with FormStructure that | |
| 464 // we could extract URL prefix from. But, all the forms should come from the | |
| 465 // same frame, so they should have the same Autocheckout URL prefix. Thus we | |
| 466 // use URL prefix from the first form with Autocheckout enabled. | |
| 467 std::string autocheckout_url_prefix; | |
| 468 | |
| 469 // Some badly formatted web sites repeat forms - detect that and encode only | |
| 470 // one form as returned data would be the same for all the repeated forms. | |
| 471 std::set<std::string> processed_forms; | |
| 472 for (ScopedVector<FormStructure>::const_iterator it = forms.begin(); | |
| 473 it != forms.end(); | |
| 474 ++it) { | |
| 475 std::string signature((*it)->FormSignature()); | |
| 476 if (processed_forms.find(signature) != processed_forms.end()) | |
| 477 continue; | |
| 478 processed_forms.insert(signature); | |
| 479 scoped_ptr<buzz::XmlElement> encompassing_xml_element( | |
| 480 new buzz::XmlElement(buzz::QName(kXMLElementForm))); | |
| 481 encompassing_xml_element->SetAttr(buzz::QName(kAttributeSignature), | |
| 482 signature); | |
| 483 | |
| 484 if (!(*it)->EncodeFormRequest(FormStructure::QUERY, | |
| 485 encompassing_xml_element.get())) | |
| 486 continue; // Malformed form, skip it. | |
| 487 | |
| 488 if ((*it)->IsAutocheckoutEnabled()) { | |
| 489 if (autocheckout_url_prefix.empty()) { | |
| 490 autocheckout_url_prefix = (*it)->autocheckout_url_prefix_; | |
| 491 } else { | |
| 492 // Making sure all the forms in the request has the same url_prefix. | |
| 493 DCHECK_EQ(autocheckout_url_prefix, (*it)->autocheckout_url_prefix_); | |
| 494 } | |
| 495 } | |
| 496 | |
| 497 autofill_request_xml.AddElement(encompassing_xml_element.release()); | |
| 498 encoded_signatures->push_back(signature); | |
| 499 } | |
| 500 | |
| 501 if (!encoded_signatures->size()) | |
| 502 return false; | |
| 503 | |
| 504 if (autocheckout_url_prefix.empty()) { | |
| 505 autofill_request_xml.SetAttr(buzz::QName(kAttributeAcceptedFeatures), | |
| 506 kAcceptedFeaturesExperiment); | |
| 507 } else { | |
| 508 autofill_request_xml.SetAttr(buzz::QName(kAttributeAcceptedFeatures), | |
| 509 kAcceptedFeaturesAutocheckoutExperiment); | |
| 510 autofill_request_xml.SetAttr(buzz::QName(kAttributeUrlprefixSignature), | |
| 511 Hash64Bit(autocheckout_url_prefix)); | |
| 512 } | |
| 513 | |
| 514 // Obtain the XML structure as a string. | |
| 515 *encoded_xml = kXMLDeclaration; | |
| 516 *encoded_xml += autofill_request_xml.Str().c_str(); | |
| 517 | |
| 518 return true; | |
| 519 } | |
| 520 | |
| 521 // static | |
| 522 void FormStructure::ParseQueryResponse( | |
| 523 const std::string& response_xml, | |
| 524 const std::vector<FormStructure*>& forms, | |
| 525 autofill::AutocheckoutPageMetaData* page_meta_data, | |
| 526 const AutofillMetrics& metric_logger) { | |
| 527 metric_logger.LogServerQueryMetric(AutofillMetrics::QUERY_RESPONSE_RECEIVED); | |
| 528 | |
| 529 // Parse the field types from the server response to the query. | |
| 530 std::vector<AutofillServerFieldInfo> field_infos; | |
| 531 UploadRequired upload_required; | |
| 532 std::string experiment_id; | |
| 533 AutofillQueryXmlParser parse_handler(&field_infos, | |
| 534 &upload_required, | |
| 535 &experiment_id, | |
| 536 page_meta_data); | |
| 537 buzz::XmlParser parser(&parse_handler); | |
| 538 parser.Parse(response_xml.c_str(), response_xml.length(), true); | |
| 539 if (!parse_handler.succeeded()) | |
| 540 return; | |
| 541 | |
| 542 metric_logger.LogServerQueryMetric(AutofillMetrics::QUERY_RESPONSE_PARSED); | |
| 543 metric_logger.LogServerExperimentIdForQuery(experiment_id); | |
| 544 | |
| 545 bool heuristics_detected_fillable_field = false; | |
| 546 bool query_response_overrode_heuristics = false; | |
| 547 | |
| 548 // Copy the field types into the actual form. | |
| 549 std::vector<AutofillServerFieldInfo>::iterator current_info = | |
| 550 field_infos.begin(); | |
| 551 for (std::vector<FormStructure*>::const_iterator iter = forms.begin(); | |
| 552 iter != forms.end(); ++iter) { | |
| 553 FormStructure* form = *iter; | |
| 554 form->upload_required_ = upload_required; | |
| 555 form->server_experiment_id_ = experiment_id; | |
| 556 | |
| 557 for (std::vector<AutofillField*>::iterator field = form->fields_.begin(); | |
| 558 field != form->fields_.end(); ++field) { | |
| 559 if (form->ShouldSkipField(**field)) | |
| 560 continue; | |
| 561 | |
| 562 // In some cases *successful* response does not return all the fields. | |
| 563 // Quit the update of the types then. | |
| 564 if (current_info == field_infos.end()) | |
| 565 break; | |
| 566 | |
| 567 // UNKNOWN_TYPE is reserved for use by the client. | |
| 568 DCHECK_NE(current_info->field_type, UNKNOWN_TYPE); | |
| 569 | |
| 570 AutofillFieldType heuristic_type = (*field)->type(); | |
| 571 if (heuristic_type != UNKNOWN_TYPE) | |
| 572 heuristics_detected_fillable_field = true; | |
| 573 | |
| 574 (*field)->set_server_type(current_info->field_type); | |
| 575 if (heuristic_type != (*field)->type()) | |
| 576 query_response_overrode_heuristics = true; | |
| 577 | |
| 578 // Copy default value into the field if available. | |
| 579 if (!current_info->default_value.empty()) | |
| 580 (*field)->set_default_value(current_info->default_value); | |
| 581 | |
| 582 ++current_info; | |
| 583 } | |
| 584 | |
| 585 form->UpdateAutofillCount(); | |
| 586 form->IdentifySections(false); | |
| 587 } | |
| 588 | |
| 589 AutofillMetrics::ServerQueryMetric metric; | |
| 590 if (query_response_overrode_heuristics) { | |
| 591 if (heuristics_detected_fillable_field) { | |
| 592 metric = AutofillMetrics::QUERY_RESPONSE_OVERRODE_LOCAL_HEURISTICS; | |
| 593 } else { | |
| 594 metric = AutofillMetrics::QUERY_RESPONSE_WITH_NO_LOCAL_HEURISTICS; | |
| 595 } | |
| 596 } else { | |
| 597 metric = AutofillMetrics::QUERY_RESPONSE_MATCHED_LOCAL_HEURISTICS; | |
| 598 } | |
| 599 metric_logger.LogServerQueryMetric(metric); | |
| 600 } | |
| 601 | |
| 602 // static | |
| 603 void FormStructure::GetFieldTypePredictions( | |
| 604 const std::vector<FormStructure*>& form_structures, | |
| 605 std::vector<FormDataPredictions>* forms) { | |
| 606 forms->clear(); | |
| 607 forms->reserve(form_structures.size()); | |
| 608 for (size_t i = 0; i < form_structures.size(); ++i) { | |
| 609 FormStructure* form_structure = form_structures[i]; | |
| 610 FormDataPredictions form; | |
| 611 form.data.name = form_structure->form_name_; | |
| 612 form.data.method = | |
| 613 ASCIIToUTF16((form_structure->method_ == POST) ? "POST" : "GET"); | |
| 614 form.data.origin = form_structure->source_url_; | |
| 615 form.data.action = form_structure->target_url_; | |
| 616 form.signature = form_structure->FormSignature(); | |
| 617 form.experiment_id = form_structure->server_experiment_id_; | |
| 618 | |
| 619 for (std::vector<AutofillField*>::const_iterator field = | |
| 620 form_structure->fields_.begin(); | |
| 621 field != form_structure->fields_.end(); ++field) { | |
| 622 form.data.fields.push_back(FormFieldData(**field)); | |
| 623 | |
| 624 FormFieldDataPredictions annotated_field; | |
| 625 annotated_field.signature = (*field)->FieldSignature(); | |
| 626 annotated_field.heuristic_type = | |
| 627 AutofillType::FieldTypeToString((*field)->heuristic_type()); | |
| 628 annotated_field.server_type = | |
| 629 AutofillType::FieldTypeToString((*field)->server_type()); | |
| 630 annotated_field.overall_type = | |
| 631 AutofillType::FieldTypeToString((*field)->type()); | |
| 632 form.fields.push_back(annotated_field); | |
| 633 } | |
| 634 | |
| 635 forms->push_back(form); | |
| 636 } | |
| 637 } | |
| 638 | |
| 639 std::string FormStructure::FormSignature() const { | |
| 640 std::string scheme(target_url_.scheme()); | |
| 641 std::string host(target_url_.host()); | |
| 642 | |
| 643 // If target host or scheme is empty, set scheme and host of source url. | |
| 644 // This is done to match the Toolbar's behavior. | |
| 645 if (scheme.empty() || host.empty()) { | |
| 646 scheme = source_url_.scheme(); | |
| 647 host = source_url_.host(); | |
| 648 } | |
| 649 | |
| 650 std::string form_string = scheme + "://" + host + "&" + | |
| 651 UTF16ToUTF8(form_name_) + | |
| 652 form_signature_field_names_; | |
| 653 | |
| 654 return Hash64Bit(form_string); | |
| 655 } | |
| 656 | |
| 657 bool FormStructure::IsAutocheckoutEnabled() const { | |
| 658 return !autocheckout_url_prefix_.empty(); | |
| 659 } | |
| 660 | |
| 661 bool FormStructure::ShouldSkipField(const FormFieldData& field) const { | |
| 662 return (field.is_checkable || field.form_control_type == "password") && | |
| 663 !IsAutocheckoutEnabled(); | |
| 664 } | |
| 665 | |
| 666 size_t FormStructure::RequiredFillableFields() const { | |
| 667 return IsAutocheckoutEnabled() ? 0 : kRequiredAutofillFields; | |
| 668 } | |
| 669 | |
| 670 bool FormStructure::IsAutofillable(bool require_method_post) const { | |
| 671 if (autofill_count() < RequiredFillableFields()) | |
| 672 return false; | |
| 673 | |
| 674 return ShouldBeParsed(require_method_post); | |
| 675 } | |
| 676 | |
| 677 void FormStructure::UpdateAutofillCount() { | |
| 678 autofill_count_ = 0; | |
| 679 for (std::vector<AutofillField*>::const_iterator iter = begin(); | |
| 680 iter != end(); ++iter) { | |
| 681 AutofillField* field = *iter; | |
| 682 if (field && field->IsFieldFillable()) | |
| 683 ++autofill_count_; | |
| 684 } | |
| 685 } | |
| 686 | |
| 687 bool FormStructure::ShouldBeParsed(bool require_method_post) const { | |
| 688 if (active_field_count() < RequiredFillableFields()) | |
| 689 return false; | |
| 690 | |
| 691 // Rule out http(s)://*/search?... | |
| 692 // e.g. http://www.google.com/search?q=... | |
| 693 // http://search.yahoo.com/search?p=... | |
| 694 if (target_url_.path() == "/search") | |
| 695 return false; | |
| 696 | |
| 697 if (!IsAutocheckoutEnabled()) { | |
| 698 // Make sure there is at least one text field when Autocheckout is | |
| 699 // not enabled. | |
| 700 bool has_text_field = false; | |
| 701 for (std::vector<AutofillField*>::const_iterator it = begin(); | |
| 702 it != end() && !has_text_field; ++it) { | |
| 703 has_text_field |= (*it)->form_control_type != "select-one"; | |
| 704 } | |
| 705 if (!has_text_field) | |
| 706 return false; | |
| 707 } | |
| 708 | |
| 709 return !require_method_post || (method_ == POST); | |
| 710 } | |
| 711 | |
| 712 bool FormStructure::ShouldBeCrowdsourced() const { | |
| 713 // Allow all forms in Autocheckout flow to be crowdsourced. | |
| 714 return (!has_author_specified_types_ && ShouldBeParsed(true)) || | |
| 715 IsAutocheckoutEnabled(); | |
| 716 } | |
| 717 | |
| 718 void FormStructure::UpdateFromCache(const FormStructure& cached_form) { | |
| 719 // Map from field signatures to cached fields. | |
| 720 std::map<std::string, const AutofillField*> cached_fields; | |
| 721 for (size_t i = 0; i < cached_form.field_count(); ++i) { | |
| 722 const AutofillField* field = cached_form.field(i); | |
| 723 cached_fields[field->FieldSignature()] = field; | |
| 724 } | |
| 725 | |
| 726 for (std::vector<AutofillField*>::const_iterator iter = begin(); | |
| 727 iter != end(); ++iter) { | |
| 728 AutofillField* field = *iter; | |
| 729 | |
| 730 std::map<std::string, const AutofillField*>::const_iterator | |
| 731 cached_field = cached_fields.find(field->FieldSignature()); | |
| 732 if (cached_field != cached_fields.end()) { | |
| 733 if (field->form_control_type != "select-one" && | |
| 734 field->value == cached_field->second->value) { | |
| 735 // From the perspective of learning user data, text fields containing | |
| 736 // default values are equivalent to empty fields. | |
| 737 field->value = base::string16(); | |
| 738 } | |
| 739 | |
| 740 field->set_heuristic_type(cached_field->second->heuristic_type()); | |
| 741 field->set_server_type(cached_field->second->server_type()); | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 UpdateAutofillCount(); | |
| 746 | |
| 747 filled_by_autocheckout_ = cached_form.filled_by_autocheckout(); | |
| 748 server_experiment_id_ = cached_form.server_experiment_id(); | |
| 749 | |
| 750 // The form signature should match between query and upload requests to the | |
| 751 // server. On many websites, form elements are dynamically added, removed, or | |
| 752 // rearranged via JavaScript between page load and form submission, so we | |
| 753 // copy over the |form_signature_field_names_| corresponding to the query | |
| 754 // request. | |
| 755 DCHECK_EQ(cached_form.form_name_, form_name_); | |
| 756 DCHECK_EQ(cached_form.source_url_, source_url_); | |
| 757 DCHECK_EQ(cached_form.target_url_, target_url_); | |
| 758 form_signature_field_names_ = cached_form.form_signature_field_names_; | |
| 759 } | |
| 760 | |
| 761 void FormStructure::LogQualityMetrics( | |
| 762 const AutofillMetrics& metric_logger, | |
| 763 const base::TimeTicks& load_time, | |
| 764 const base::TimeTicks& interaction_time, | |
| 765 const base::TimeTicks& submission_time) const { | |
| 766 std::string experiment_id = server_experiment_id(); | |
| 767 metric_logger.LogServerExperimentIdForUpload(experiment_id); | |
| 768 | |
| 769 size_t num_detected_field_types = 0; | |
| 770 bool did_autofill_all_possible_fields = true; | |
| 771 bool did_autofill_some_possible_fields = false; | |
| 772 for (size_t i = 0; i < field_count(); ++i) { | |
| 773 const AutofillField* field = this->field(i); | |
| 774 metric_logger.LogQualityMetric(AutofillMetrics::FIELD_SUBMITTED, | |
| 775 experiment_id); | |
| 776 | |
| 777 // No further logging for empty fields nor for fields where the entered data | |
| 778 // does not appear to already exist in the user's stored Autofill data. | |
| 779 const FieldTypeSet& field_types = field->possible_types(); | |
| 780 DCHECK(!field_types.empty()); | |
| 781 if (field_types.count(EMPTY_TYPE) || field_types.count(UNKNOWN_TYPE)) | |
| 782 continue; | |
| 783 | |
| 784 ++num_detected_field_types; | |
| 785 if (field->is_autofilled) | |
| 786 did_autofill_some_possible_fields = true; | |
| 787 else | |
| 788 did_autofill_all_possible_fields = false; | |
| 789 | |
| 790 // Collapse field types that Chrome treats as identical, e.g. home and | |
| 791 // billing address fields. | |
| 792 FieldTypeSet collapsed_field_types; | |
| 793 for (FieldTypeSet::const_iterator it = field_types.begin(); | |
| 794 it != field_types.end(); | |
| 795 ++it) { | |
| 796 // Since we currently only support US phone numbers, the (city code + main | |
| 797 // digits) number is almost always identical to the whole phone number. | |
| 798 // TODO(isherman): Improve this logic once we add support for | |
| 799 // international numbers. | |
| 800 if (*it == PHONE_HOME_CITY_AND_NUMBER) | |
| 801 collapsed_field_types.insert(PHONE_HOME_WHOLE_NUMBER); | |
| 802 else | |
| 803 collapsed_field_types.insert(AutofillType::GetEquivalentFieldType(*it)); | |
| 804 } | |
| 805 | |
| 806 // Capture the field's type, if it is unambiguous. | |
| 807 AutofillFieldType field_type = UNKNOWN_TYPE; | |
| 808 if (collapsed_field_types.size() == 1) | |
| 809 field_type = *collapsed_field_types.begin(); | |
| 810 | |
| 811 AutofillFieldType heuristic_type = field->heuristic_type(); | |
| 812 AutofillFieldType server_type = field->server_type(); | |
| 813 AutofillFieldType predicted_type = field->type(); | |
| 814 | |
| 815 // Log heuristic, server, and overall type quality metrics, independently of | |
| 816 // whether the field was autofilled. | |
| 817 if (heuristic_type == UNKNOWN_TYPE) { | |
| 818 metric_logger.LogHeuristicTypePrediction(AutofillMetrics::TYPE_UNKNOWN, | |
| 819 field_type, experiment_id); | |
| 820 } else if (field_types.count(heuristic_type)) { | |
| 821 metric_logger.LogHeuristicTypePrediction(AutofillMetrics::TYPE_MATCH, | |
| 822 field_type, experiment_id); | |
| 823 } else { | |
| 824 metric_logger.LogHeuristicTypePrediction(AutofillMetrics::TYPE_MISMATCH, | |
| 825 field_type, experiment_id); | |
| 826 } | |
| 827 | |
| 828 if (server_type == NO_SERVER_DATA) { | |
| 829 metric_logger.LogServerTypePrediction(AutofillMetrics::TYPE_UNKNOWN, | |
| 830 field_type, experiment_id); | |
| 831 } else if (field_types.count(server_type)) { | |
| 832 metric_logger.LogServerTypePrediction(AutofillMetrics::TYPE_MATCH, | |
| 833 field_type, experiment_id); | |
| 834 } else { | |
| 835 metric_logger.LogServerTypePrediction(AutofillMetrics::TYPE_MISMATCH, | |
| 836 field_type, experiment_id); | |
| 837 } | |
| 838 | |
| 839 if (predicted_type == UNKNOWN_TYPE) { | |
| 840 metric_logger.LogOverallTypePrediction(AutofillMetrics::TYPE_UNKNOWN, | |
| 841 field_type, experiment_id); | |
| 842 } else if (field_types.count(predicted_type)) { | |
| 843 metric_logger.LogOverallTypePrediction(AutofillMetrics::TYPE_MATCH, | |
| 844 field_type, experiment_id); | |
| 845 } else { | |
| 846 metric_logger.LogOverallTypePrediction(AutofillMetrics::TYPE_MISMATCH, | |
| 847 field_type, experiment_id); | |
| 848 } | |
| 849 | |
| 850 // TODO(isherman): <select> fields don't support |is_autofilled()|, so we | |
| 851 // have to skip them for the remaining metrics. | |
| 852 if (field->form_control_type == "select-one") | |
| 853 continue; | |
| 854 | |
| 855 if (field->is_autofilled) { | |
| 856 metric_logger.LogQualityMetric(AutofillMetrics::FIELD_AUTOFILLED, | |
| 857 experiment_id); | |
| 858 } else { | |
| 859 metric_logger.LogQualityMetric(AutofillMetrics::FIELD_NOT_AUTOFILLED, | |
| 860 experiment_id); | |
| 861 | |
| 862 if (heuristic_type == UNKNOWN_TYPE) { | |
| 863 metric_logger.LogQualityMetric( | |
| 864 AutofillMetrics::NOT_AUTOFILLED_HEURISTIC_TYPE_UNKNOWN, | |
| 865 experiment_id); | |
| 866 } else if (field_types.count(heuristic_type)) { | |
| 867 metric_logger.LogQualityMetric( | |
| 868 AutofillMetrics::NOT_AUTOFILLED_HEURISTIC_TYPE_MATCH, | |
| 869 experiment_id); | |
| 870 } else { | |
| 871 metric_logger.LogQualityMetric( | |
| 872 AutofillMetrics::NOT_AUTOFILLED_HEURISTIC_TYPE_MISMATCH, | |
| 873 experiment_id); | |
| 874 } | |
| 875 | |
| 876 if (server_type == NO_SERVER_DATA) { | |
| 877 metric_logger.LogQualityMetric( | |
| 878 AutofillMetrics::NOT_AUTOFILLED_SERVER_TYPE_UNKNOWN, | |
| 879 experiment_id); | |
| 880 } else if (field_types.count(server_type)) { | |
| 881 metric_logger.LogQualityMetric( | |
| 882 AutofillMetrics::NOT_AUTOFILLED_SERVER_TYPE_MATCH, | |
| 883 experiment_id); | |
| 884 } else { | |
| 885 metric_logger.LogQualityMetric( | |
| 886 AutofillMetrics::NOT_AUTOFILLED_SERVER_TYPE_MISMATCH, | |
| 887 experiment_id); | |
| 888 } | |
| 889 } | |
| 890 } | |
| 891 | |
| 892 if (num_detected_field_types < RequiredFillableFields()) { | |
| 893 metric_logger.LogUserHappinessMetric( | |
| 894 AutofillMetrics::SUBMITTED_NON_FILLABLE_FORM); | |
| 895 } else { | |
| 896 if (did_autofill_all_possible_fields) { | |
| 897 metric_logger.LogUserHappinessMetric( | |
| 898 AutofillMetrics::SUBMITTED_FILLABLE_FORM_AUTOFILLED_ALL); | |
| 899 } else if (did_autofill_some_possible_fields) { | |
| 900 metric_logger.LogUserHappinessMetric( | |
| 901 AutofillMetrics::SUBMITTED_FILLABLE_FORM_AUTOFILLED_SOME); | |
| 902 } else { | |
| 903 metric_logger.LogUserHappinessMetric( | |
| 904 AutofillMetrics::SUBMITTED_FILLABLE_FORM_AUTOFILLED_NONE); | |
| 905 } | |
| 906 | |
| 907 // Unlike the other times, the |submission_time| should always be available. | |
| 908 DCHECK(!submission_time.is_null()); | |
| 909 | |
| 910 // The |load_time| might be unset, in the case that the form was dynamically | |
| 911 // added to the DOM. | |
| 912 if (!load_time.is_null()) { | |
| 913 // Submission should always chronologically follow form load. | |
| 914 DCHECK(submission_time > load_time); | |
| 915 base::TimeDelta elapsed = submission_time - load_time; | |
| 916 if (did_autofill_some_possible_fields) | |
| 917 metric_logger.LogFormFillDurationFromLoadWithAutofill(elapsed); | |
| 918 else | |
| 919 metric_logger.LogFormFillDurationFromLoadWithoutAutofill(elapsed); | |
| 920 } | |
| 921 | |
| 922 // The |interaction_time| might be unset, in the case that the user | |
| 923 // submitted a blank form. | |
| 924 if (!interaction_time.is_null()) { | |
| 925 // Submission should always chronologically follow interaction. | |
| 926 DCHECK(submission_time > interaction_time); | |
| 927 base::TimeDelta elapsed = submission_time - interaction_time; | |
| 928 if (did_autofill_some_possible_fields) { | |
| 929 metric_logger.LogFormFillDurationFromInteractionWithAutofill(elapsed); | |
| 930 } else { | |
| 931 metric_logger.LogFormFillDurationFromInteractionWithoutAutofill( | |
| 932 elapsed); | |
| 933 } | |
| 934 } | |
| 935 } | |
| 936 } | |
| 937 | |
| 938 const AutofillField* FormStructure::field(size_t index) const { | |
| 939 if (index >= fields_.size()) { | |
| 940 NOTREACHED(); | |
| 941 return NULL; | |
| 942 } | |
| 943 | |
| 944 return fields_[index]; | |
| 945 } | |
| 946 | |
| 947 AutofillField* FormStructure::field(size_t index) { | |
| 948 return const_cast<AutofillField*>( | |
| 949 static_cast<const FormStructure*>(this)->field(index)); | |
| 950 } | |
| 951 | |
| 952 size_t FormStructure::field_count() const { | |
| 953 return fields_.size(); | |
| 954 } | |
| 955 | |
| 956 size_t FormStructure::active_field_count() const { | |
| 957 return active_field_count_; | |
| 958 } | |
| 959 | |
| 960 std::string FormStructure::server_experiment_id() const { | |
| 961 return server_experiment_id_; | |
| 962 } | |
| 963 | |
| 964 FormData FormStructure::ToFormData() const { | |
| 965 // |data.user_submitted| will always be false. | |
| 966 FormData data; | |
| 967 data.name = form_name_; | |
| 968 data.origin = source_url_; | |
| 969 data.action = target_url_; | |
| 970 data.method = ASCIIToUTF16(method_ == POST ? "POST" : "GET"); | |
| 971 | |
| 972 for (size_t i = 0; i < fields_.size(); ++i) { | |
| 973 data.fields.push_back(FormFieldData(*fields_[i])); | |
| 974 } | |
| 975 | |
| 976 return data; | |
| 977 } | |
| 978 | |
| 979 bool FormStructure::operator==(const FormData& form) const { | |
| 980 // TODO(jhawkins): Is this enough to differentiate a form? | |
| 981 if (form_name_ == form.name && | |
| 982 source_url_ == form.origin && | |
| 983 target_url_ == form.action) { | |
| 984 return true; | |
| 985 } | |
| 986 | |
| 987 // TODO(jhawkins): Compare field names, IDs and labels once we have labels | |
| 988 // set up. | |
| 989 | |
| 990 return false; | |
| 991 } | |
| 992 | |
| 993 bool FormStructure::operator!=(const FormData& form) const { | |
| 994 return !operator==(form); | |
| 995 } | |
| 996 | |
| 997 std::string FormStructure::Hash64Bit(const std::string& str) { | |
| 998 std::string hash_bin = base::SHA1HashString(str); | |
| 999 DCHECK_EQ(20U, hash_bin.length()); | |
| 1000 | |
| 1001 uint64 hash64 = (((static_cast<uint64>(hash_bin[0])) & 0xFF) << 56) | | |
| 1002 (((static_cast<uint64>(hash_bin[1])) & 0xFF) << 48) | | |
| 1003 (((static_cast<uint64>(hash_bin[2])) & 0xFF) << 40) | | |
| 1004 (((static_cast<uint64>(hash_bin[3])) & 0xFF) << 32) | | |
| 1005 (((static_cast<uint64>(hash_bin[4])) & 0xFF) << 24) | | |
| 1006 (((static_cast<uint64>(hash_bin[5])) & 0xFF) << 16) | | |
| 1007 (((static_cast<uint64>(hash_bin[6])) & 0xFF) << 8) | | |
| 1008 ((static_cast<uint64>(hash_bin[7])) & 0xFF); | |
| 1009 | |
| 1010 return base::Uint64ToString(hash64); | |
| 1011 } | |
| 1012 | |
| 1013 bool FormStructure::EncodeFormRequest( | |
| 1014 FormStructure::EncodeRequestType request_type, | |
| 1015 buzz::XmlElement* encompassing_xml_element) const { | |
| 1016 if (!field_count()) // Nothing to add. | |
| 1017 return false; | |
| 1018 | |
| 1019 // Some badly formatted web sites repeat fields - limit number of fields to | |
| 1020 // 48, which is far larger than any valid form and XML still fits into 2K. | |
| 1021 // Do not send requests for forms with more than this many fields, as they are | |
| 1022 // near certainly not valid/auto-fillable. | |
| 1023 const size_t kMaxFieldsOnTheForm = 48; | |
| 1024 if (field_count() > kMaxFieldsOnTheForm) | |
| 1025 return false; | |
| 1026 | |
| 1027 // Add the child nodes for the form fields. | |
| 1028 for (size_t index = 0; index < field_count(); ++index) { | |
| 1029 const AutofillField* field = fields_[index]; | |
| 1030 switch (request_type) { | |
| 1031 case FormStructure::UPLOAD: | |
| 1032 EncodeFieldForUpload(*field, encompassing_xml_element); | |
| 1033 break; | |
| 1034 case FormStructure::QUERY: | |
| 1035 if (ShouldSkipField(*field)) | |
| 1036 continue; | |
| 1037 EncodeFieldForQuery(*field, encompassing_xml_element); | |
| 1038 break; | |
| 1039 case FormStructure::FIELD_ASSIGNMENTS: | |
| 1040 EncodeFieldForFieldAssignments(*field, encompassing_xml_element); | |
| 1041 break; | |
| 1042 } | |
| 1043 } | |
| 1044 return true; | |
| 1045 } | |
| 1046 | |
| 1047 void FormStructure::ParseFieldTypesFromAutocompleteAttributes( | |
| 1048 bool* found_types, | |
| 1049 bool* found_sections) { | |
| 1050 const std::string kDefaultSection = "-default"; | |
| 1051 | |
| 1052 *found_types = false; | |
| 1053 *found_sections = false; | |
| 1054 for (std::vector<AutofillField*>::iterator it = fields_.begin(); | |
| 1055 it != fields_.end(); ++it) { | |
| 1056 AutofillField* field = *it; | |
| 1057 | |
| 1058 // To prevent potential section name collisions, add a default suffix for | |
| 1059 // other fields. Without this, 'autocomplete' attribute values | |
| 1060 // "section--shipping street-address" and "shipping street-address" would be | |
| 1061 // parsed identically, given the section handling code below. We do this | |
| 1062 // before any validation so that fields with invalid attributes still end up | |
| 1063 // in the default section. These default section names will be overridden | |
| 1064 // by subsequent heuristic parsing steps if there are no author-specified | |
| 1065 // section names. | |
| 1066 field->set_section(kDefaultSection); | |
| 1067 | |
| 1068 // Canonicalize the attribute value by trimming whitespace, collapsing | |
| 1069 // non-space characters (e.g. tab) to spaces, and converting to lowercase. | |
| 1070 std::string autocomplete_attribute = | |
| 1071 CollapseWhitespaceASCII(field->autocomplete_attribute, false); | |
| 1072 autocomplete_attribute = StringToLowerASCII(autocomplete_attribute); | |
| 1073 | |
| 1074 // The autocomplete attribute is overloaded: it can specify either a field | |
| 1075 // type hint or whether autocomplete should be enabled at all. Ignore the | |
| 1076 // latter type of attribute value. | |
| 1077 if (autocomplete_attribute.empty() || | |
| 1078 autocomplete_attribute == "on" || | |
| 1079 autocomplete_attribute == "off") { | |
| 1080 continue; | |
| 1081 } | |
| 1082 | |
| 1083 // Any other value, even it is invalid, is considered to be a type hint. | |
| 1084 // This allows a website's author to specify an attribute like | |
| 1085 // autocomplete="other" on a field to disable all Autofill heuristics for | |
| 1086 // the form. | |
| 1087 *found_types = true; | |
| 1088 | |
| 1089 // Tokenize the attribute value. Per the spec, the tokens are parsed in | |
| 1090 // reverse order. | |
| 1091 std::vector<std::string> tokens; | |
| 1092 Tokenize(autocomplete_attribute, " ", &tokens); | |
| 1093 | |
| 1094 // The final token must be the field type. | |
| 1095 // If it is not one of the known types, abort. | |
| 1096 DCHECK(!tokens.empty()); | |
| 1097 std::string field_type_token = tokens.back(); | |
| 1098 tokens.pop_back(); | |
| 1099 AutofillFieldType field_type = | |
| 1100 FieldTypeFromAutocompleteType(field_type_token, *field); | |
| 1101 if (field_type == UNKNOWN_TYPE) | |
| 1102 continue; | |
| 1103 | |
| 1104 // The preceding token, if any, may be a type hint. | |
| 1105 if (!tokens.empty() && IsContactTypeHint(tokens.back())) { | |
| 1106 // If it is, it must match the field type; otherwise, abort. | |
| 1107 // Note that an invalid token invalidates the entire attribute value, even | |
| 1108 // if the other tokens are valid. | |
| 1109 if (!ContactTypeHintMatchesFieldType(tokens.back(), field_type)) | |
| 1110 continue; | |
| 1111 | |
| 1112 // Chrome Autofill ignores these type hints. | |
| 1113 tokens.pop_back(); | |
| 1114 } | |
| 1115 | |
| 1116 // The preceding token, if any, may be a fixed string that is either | |
| 1117 // "shipping" or "billing". Chrome Autofill treats these as implicit | |
| 1118 // section name suffixes. | |
| 1119 DCHECK_EQ(kDefaultSection, field->section()); | |
| 1120 std::string section = field->section(); | |
| 1121 if (!tokens.empty() && | |
| 1122 (tokens.back() == kShippingSection || | |
| 1123 tokens.back() == kBillingSection)) { | |
| 1124 // Set Autofill field type to billing if section is billing. | |
| 1125 if (tokens.back() == kBillingSection) | |
| 1126 field_type = AutofillType::GetEquivalentBillingFieldType(field_type); | |
| 1127 section = "-" + tokens.back(); | |
| 1128 tokens.pop_back(); | |
| 1129 } | |
| 1130 | |
| 1131 // The preceding token, if any, may be a named section. | |
| 1132 const std::string kSectionPrefix = "section-"; | |
| 1133 if (!tokens.empty() && | |
| 1134 StartsWithASCII(tokens.back(), kSectionPrefix, true)) { | |
| 1135 // Prepend this section name to the suffix set in the preceding block. | |
| 1136 section = tokens.back().substr(kSectionPrefix.size()) + section; | |
| 1137 tokens.pop_back(); | |
| 1138 } | |
| 1139 | |
| 1140 // No other tokens are allowed. If there are any remaining, abort. | |
| 1141 if (!tokens.empty()) | |
| 1142 continue; | |
| 1143 | |
| 1144 if (section != kDefaultSection) { | |
| 1145 *found_sections = true; | |
| 1146 field->set_section(section); | |
| 1147 } | |
| 1148 | |
| 1149 // No errors encountered while parsing! | |
| 1150 // Update the |field|'s type based on what was parsed from the attribute. | |
| 1151 field->set_heuristic_type(field_type); | |
| 1152 if (field_type_token == "tel-local-prefix") | |
| 1153 field->set_phone_part(AutofillField::PHONE_PREFIX); | |
| 1154 else if (field_type_token == "tel-local-suffix") | |
| 1155 field->set_phone_part(AutofillField::PHONE_SUFFIX); | |
| 1156 } | |
| 1157 } | |
| 1158 | |
| 1159 void FormStructure::IdentifySections(bool has_author_specified_sections) { | |
| 1160 if (fields_.empty()) | |
| 1161 return; | |
| 1162 | |
| 1163 if (!has_author_specified_sections) { | |
| 1164 // Name sections after the first field in the section. | |
| 1165 base::string16 current_section = fields_.front()->unique_name(); | |
| 1166 | |
| 1167 // Keep track of the types we've seen in this section. | |
| 1168 std::set<AutofillFieldType> seen_types; | |
| 1169 AutofillFieldType previous_type = UNKNOWN_TYPE; | |
| 1170 | |
| 1171 for (std::vector<AutofillField*>::iterator field = fields_.begin(); | |
| 1172 field != fields_.end(); ++field) { | |
| 1173 const AutofillFieldType current_type = | |
| 1174 AutofillType::GetEquivalentFieldType((*field)->type()); | |
| 1175 | |
| 1176 bool already_saw_current_type = seen_types.count(current_type) > 0; | |
| 1177 | |
| 1178 // Forms often ask for multiple phone numbers -- e.g. both a daytime and | |
| 1179 // evening phone number. Our phone number detection is also generally a | |
| 1180 // little off. Hence, ignore this field type as a signal here. | |
| 1181 if (AutofillType(current_type).group() == AutofillType::PHONE_HOME) | |
| 1182 already_saw_current_type = false; | |
| 1183 | |
| 1184 // Some forms have adjacent fields of the same type. Two common examples: | |
| 1185 // * Forms with two email fields, where the second is meant to "confirm" | |
| 1186 // the first. | |
| 1187 // * Forms with a <select> menu for states in some countries, and a | |
| 1188 // freeform <input> field for states in other countries. (Usually, | |
| 1189 // only one of these two will be visible for any given choice of | |
| 1190 // country.) | |
| 1191 // Generally, adjacent fields of the same type belong in the same logical | |
| 1192 // section. | |
| 1193 if (current_type == previous_type) | |
| 1194 already_saw_current_type = false; | |
| 1195 | |
| 1196 previous_type = current_type; | |
| 1197 | |
| 1198 if (current_type != UNKNOWN_TYPE && already_saw_current_type) { | |
| 1199 // We reached the end of a section, so start a new section. | |
| 1200 seen_types.clear(); | |
| 1201 current_section = (*field)->unique_name(); | |
| 1202 } | |
| 1203 | |
| 1204 seen_types.insert(current_type); | |
| 1205 (*field)->set_section(UTF16ToUTF8(current_section)); | |
| 1206 } | |
| 1207 } | |
| 1208 | |
| 1209 // Ensure that credit card and address fields are in separate sections. | |
| 1210 // This simplifies the section-aware logic in autofill_manager.cc. | |
| 1211 for (std::vector<AutofillField*>::iterator field = fields_.begin(); | |
| 1212 field != fields_.end(); ++field) { | |
| 1213 AutofillType::FieldTypeGroup field_type_group = | |
| 1214 AutofillType((*field)->type()).group(); | |
| 1215 if (field_type_group == AutofillType::CREDIT_CARD) | |
| 1216 (*field)->set_section((*field)->section() + "-cc"); | |
| 1217 else | |
| 1218 (*field)->set_section((*field)->section() + "-default"); | |
| 1219 } | |
| 1220 } | |
| 1221 | |
| 1222 } // namespace autofill | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 17392006:
In components/autofill, move browser/ to core/browser/ (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src