1 // Copyright 2013 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/core/browser/form_field.h" 6 7 #include <stddef.h> 8 #include <string> 9 #include <utility> 10 11 #include "base/logging.h" 12 #include "base/memory/scoped_ptr.h" 13 #include "base/strings/string_util.h" 14 #include "base/strings/stringprintf.h" 15 #include "base/strings/utf_string_conversions.h" 16 #include "components/autofill/core/browser/address_field.h" 17 #include "components/autofill/core/browser/autofill_field.h" 18 #include "components/autofill/core/browser/autofill_regexes.h" 19 #include "components/autofill/core/browser/autofill_scanner.h" 20 #include "components/autofill/core/browser/credit_card_field.h" 21 #include "components/autofill/core/browser/email_field.h" 22 #include "components/autofill/core/browser/form_structure.h" 23 #include "components/autofill/core/browser/name_field.h" 24 #include "components/autofill/core/browser/phone_field.h" 25 #include "ui/base/l10n/l10n_util.h" 26 27 namespace autofill { 28 namespace { 29 30 bool IsCheckable(const AutofillField* field) { 31 return field->is_checkable; 32 } 33 34 } // namespace 35 36 // static 37 void FormField::ParseFormFields(const std::vector<AutofillField*>& fields, 38 ServerFieldTypeMap* map) { 39 // Set up a working copy of the fields to be processed. 40 std::vector<const AutofillField*> remaining_fields(fields.size()); 41 std::copy(fields.begin(), fields.end(), remaining_fields.begin()); 42 43 // Ignore checkable fields as they interfere with parsers assuming context. 44 // Eg., while parsing address, "Is PO box" checkbox after ADDRESS_LINE1 45 // interferes with correctly understanding ADDRESS_LINE2. 46 remaining_fields.erase( 47 std::remove_if(remaining_fields.begin(), remaining_fields.end(), 48 IsCheckable), 49 remaining_fields.end()); 50 51 // Email pass. 52 ParseFormFieldsPass(EmailField::Parse, &remaining_fields, map); 53 54 // Phone pass. 55 ParseFormFieldsPass(PhoneField::Parse, &remaining_fields, map); 56 57 // Address pass. 58 ParseFormFieldsPass(AddressField::Parse, &remaining_fields, map); 59 60 // Credit card pass. 61 ParseFormFieldsPass(CreditCardField::Parse, &remaining_fields, map); 62 63 // Name pass. 64 ParseFormFieldsPass(NameField::Parse, &remaining_fields, map); 65 } 66 67 // static 68 bool FormField::ParseField(AutofillScanner* scanner, 69 const base::string16& pattern, 70 const AutofillField** match) { 71 return ParseFieldSpecifics(scanner, pattern, MATCH_DEFAULT, match); 72 } 73 74 // static 75 bool FormField::ParseFieldSpecifics(AutofillScanner* scanner, 76 const base::string16& pattern, 77 int match_type, 78 const AutofillField** match) { 79 if (scanner->IsEnd()) 80 return false; 81 82 const AutofillField* field = scanner->Cursor(); 83 84 if (!MatchesFormControlType(field->form_control_type, match_type)) 85 return false; 86 87 return MatchAndAdvance(scanner, pattern, match_type, match); 88 } 89 90 // static 91 bool FormField::ParseEmptyLabel(AutofillScanner* scanner, 92 const AutofillField** match) { 93 return ParseFieldSpecifics(scanner, 94 base::ASCIIToUTF16("^$"), 95 MATCH_LABEL | MATCH_ALL_INPUTS, 96 match); 97 } 98 99 // static 100 bool FormField::AddClassification(const AutofillField* field, 101 ServerFieldType type, 102 ServerFieldTypeMap* map) { 103 // Several fields are optional. 104 if (!field) 105 return true; 106 107 return map->insert(make_pair(field->unique_name(), type)).second; 108 } 109 110 // static. 111 bool FormField::MatchAndAdvance(AutofillScanner* scanner, 112 const base::string16& pattern, 113 int match_type, 114 const AutofillField** match) { 115 const AutofillField* field = scanner->Cursor(); 116 if (FormField::Match(field, pattern, match_type)) { 117 if (match) 118 *match = field; 119 scanner->Advance(); 120 return true; 121 } 122 123 return false; 124 } 125 126 // static 127 bool FormField::Match(const AutofillField* field, 128 const base::string16& pattern, 129 int match_type) { 130 if ((match_type & FormField::MATCH_LABEL) && 131 autofill::MatchesPattern(field->label, pattern)) { 132 return true; 133 } 134 135 if ((match_type & FormField::MATCH_NAME) && 136 autofill::MatchesPattern(field->name, pattern)) { 137 return true; 138 } 139 140 if ((match_type & FormField::MATCH_VALUE) && 141 autofill::MatchesPattern(field->value, pattern)) { 142 return true; 143 } 144 145 return false; 146 } 147 148 // static 149 void FormField::ParseFormFieldsPass(ParseFunction parse, 150 std::vector<const AutofillField*>* fields, 151 ServerFieldTypeMap* map) { 152 // Store unmatched fields for further processing by the caller. 153 std::vector<const AutofillField*> remaining_fields; 154 155 AutofillScanner scanner(*fields); 156 while (!scanner.IsEnd()) { 157 scoped_ptr<FormField> form_field(parse(&scanner)); 158 if (!form_field.get()) { 159 remaining_fields.push_back(scanner.Cursor()); 160 scanner.Advance(); 161 continue; 162 } 163 164 // Add entries into the map for each field type found in |form_field|. 165 bool ok = form_field->ClassifyField(map); 166 DCHECK(ok); 167 } 168 169 std::swap(*fields, remaining_fields); 170 } 171 172 bool FormField::MatchesFormControlType(const std::string& type, 173 int match_type) { 174 if ((match_type & MATCH_TEXT) && type == "text") 175 return true; 176 177 if ((match_type & MATCH_EMAIL) && type == "email") 178 return true; 179 180 if ((match_type & MATCH_TELEPHONE) && type == "tel") 181 return true; 182 183 if ((match_type & MATCH_SELECT) && type == "select-one") 184 return true; 185 186 if ((match_type & MATCH_TEXT_AREA) && type == "textarea") 187 return true; 188 189 return false; 190 } 191 192 } // namespace autofill 193
