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 "components/autofill/core/common/autofill_data_validation.h"
6
7#include "components/autofill/core/common/form_data.h"
8#include "components/autofill/core/common/form_field_data.h"
9#include "components/autofill/core/common/password_form_fill_data.h"
10#include "url/gurl.h"
11
12namespace autofill {
13
14const size_t kMaxDataLength = 1024;
15
16// Allow enough space for all countries (roughly 300 distinct values) and all
17// timezones (roughly 400 distinct values), plus some extra wiggle room.
18const size_t kMaxListSize = 512;
19
20bool IsValidString(const std::string& str) {
21  return str.size() <= kMaxDataLength;
22}
23
24bool IsValidString16(const base::string16& str) {
25  return str.size() <= kMaxDataLength;
26}
27
28bool IsValidGURL(const GURL& url) {
29  return url.is_empty() || url.is_valid();
30}
31
32bool IsValidFormFieldData(const FormFieldData& field) {
33  return
34      IsValidString16(field.label) &&
35      IsValidString16(field.name) &&
36      IsValidString16(field.value) &&
37      IsValidString(field.form_control_type) &&
38      IsValidString(field.autocomplete_attribute) &&
39      IsValidString16Vector(field.option_values) &&
40      IsValidString16Vector(field.option_contents);
41}
42
43bool IsValidFormData(const FormData& form) {
44  if (!IsValidString16(form.name) ||
45      !IsValidGURL(form.origin) ||
46      !IsValidGURL(form.action))
47    return false;
48
49  if (form.fields.size() > kMaxListSize)
50    return false;
51
52  for (std::vector<FormFieldData>::const_iterator it = form.fields.begin();
53       it != form.fields.end(); ++it) {
54    if (!IsValidFormFieldData(*it))
55      return false;
56  }
57
58  return true;
59}
60
61bool IsValidPasswordFormFillData(const PasswordFormFillData& form) {
62  if (!IsValidFormData(form.basic_data) ||
63      !IsValidString(form.preferred_realm))
64    return false;
65
66  for (PasswordFormFillData::LoginCollection::const_iterator it =
67           form.additional_logins.begin();
68       it != form.additional_logins.end(); ++it) {
69    if (!IsValidString16(it->first) ||
70        !IsValidString16(it->second.password) ||
71        !IsValidString(it->second.realm))
72      return false;
73  }
74
75  for (PasswordFormFillData::UsernamesCollection::const_iterator it =
76           form.other_possible_usernames.begin();
77       it != form.other_possible_usernames.end(); ++it) {
78    if (!IsValidString16(it->first.username) ||
79        !IsValidString16(it->first.password) ||
80        !IsValidString(it->first.realm) ||
81        !IsValidString16Vector(it->second))
82      return false;
83  }
84
85  return true;
86}
87
88bool IsValidString16Vector(const std::vector<base::string16>& v) {
89  if (v.size() > kMaxListSize)
90    return false;
91
92  for (std::vector<base::string16>::const_iterator it = v.begin();
93       it != v.end(); ++it) {
94    if (!IsValidString16(*it))
95      return false;
96  }
97
98  return true;
99}
100
101bool IsValidFormDataVector(const std::vector<FormData>& v) {
102  if (v.size() > kMaxListSize)
103    return false;
104
105  for (std::vector<FormData>::const_iterator it = v.begin(); it != v.end();
106       ++it) {
107    if (!IsValidFormData(*it))
108      return false;
109  }
110
111  return true;
112}
113
114}  // namespace autofill
115