Index: components/autofill/browser/password_generator.cc |
diff --git a/components/autofill/browser/password_generator.cc b/components/autofill/browser/password_generator.cc |
deleted file mode 100644 |
index 196770669133eedcec77c65a412c26e4fcace206..0000000000000000000000000000000000000000 |
--- a/components/autofill/browser/password_generator.cc |
+++ /dev/null |
@@ -1,125 +0,0 @@ |
-// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "components/autofill/browser/password_generator.h" |
- |
-#include <algorithm> |
-#include <vector> |
- |
-#include "base/basictypes.h" |
-#include "base/logging.h" |
-#include "base/rand_util.h" |
- |
-const int kMinUpper = 65; // First upper case letter 'A' |
-const int kMaxUpper = 90; // Last upper case letter 'Z' |
-const int kMinLower = 97; // First lower case letter 'a' |
-const int kMaxLower = 122; // Last lower case letter 'z' |
-const int kMinDigit = 48; // First digit '0' |
-const int kMaxDigit = 57; // Last digit '9' |
-// Copy of the other printable symbols from the ASCII table since they are |
-// disjointed. |
-const char kOtherSymbols[] = |
- {'!', '\"', '#', '$', '%', '&', '\'', '(', |
- ')', '*', '+', ',', '-', '.', '/', ':', |
- ';', '<', '=', '>', '?', '@', '[', '\\', |
- ']', '^', '_', '`', '{', '|', '}', '~'}; |
-const size_t kMinPasswordLength = 4; |
-const size_t kMaxPasswordLength = 15; |
- |
-namespace { |
- |
-// A helper function to get the length of the generated password from |
-// |max_length| retrieved from input password field. |
-size_t GetLengthFromHint(size_t max_length, size_t default_length) { |
- if (max_length >= kMinPasswordLength && max_length <= kMaxPasswordLength) |
- return max_length; |
- else |
- return default_length; |
-} |
- |
-void InitializeAlphaNumericCharacters(std::vector<char>* characters) { |
- for (int i = kMinDigit; i <= kMaxDigit; ++i) |
- characters->push_back(static_cast<char>(i)); |
- for (int i = kMinUpper; i <= kMaxUpper; ++i) |
- characters->push_back(static_cast<char>(i)); |
- for (int i = kMinLower; i <= kMaxLower; ++i) |
- characters->push_back(static_cast<char>(i)); |
-} |
- |
-// Classic algorithm to randomly select |num_select| elements out of |
-// |num_total| elements. One description can be found at: |
-// "http://stackoverflow.com/questions/48087/select-a-random-n-elements-from-listt-in-c-sharp/48089#48089" |
-void GetRandomSelection(size_t num_to_select, |
- size_t num_total, |
- std::vector<size_t>* selections) { |
- DCHECK_GE(num_total, num_to_select); |
- size_t num_left = num_total; |
- size_t num_needed = num_to_select; |
- for (size_t i = 0; i < num_total && num_needed > 0; ++i) { |
- // we have probability = |num_needed| / |num_left| to select |
- // this position. |
- size_t probability = base::RandInt(0, num_left - 1); |
- if (probability < num_needed) { |
- selections->push_back(i); |
- --num_needed; |
- } |
- --num_left; |
- } |
- DCHECK_EQ(num_to_select, selections->size()); |
-} |
- |
-} // namespace |
- |
-namespace autofill { |
- |
-const size_t PasswordGenerator::kDefaultPasswordLength = 12; |
- |
-PasswordGenerator::PasswordGenerator(size_t max_length) |
- : password_length_(GetLengthFromHint(max_length, kDefaultPasswordLength)) {} |
-PasswordGenerator::~PasswordGenerator() {} |
- |
-std::string PasswordGenerator::Generate() const { |
- std::string ret; |
- CR_DEFINE_STATIC_LOCAL(std::vector<char>, alphanumeric_characters, ()); |
- if (alphanumeric_characters.empty()) |
- InitializeAlphaNumericCharacters(&alphanumeric_characters); |
- |
- // First, randomly select 4 positions to hold one upper case letter, |
- // one lower case letter, one digit, and one other symbol respectively, |
- // to make sure at least one of each category of characters will be |
- // included in the password. |
- std::vector<size_t> positions; |
- GetRandomSelection(4u, password_length_, &positions); |
- |
- // To enhance the strengh of the password, we random suffle the positions so |
- // that the 4 catagories can be put at a random position in it. |
- std::random_shuffle(positions.begin(), positions.end()); |
- |
- // Next, generate each character of the password. |
- for (size_t i = 0; i < password_length_; ++i) { |
- if (i == positions[0]) { |
- // Generate random upper case letter. |
- ret.push_back(static_cast<char>(base::RandInt(kMinUpper, kMaxUpper))); |
- } else if (i == positions[1]) { |
- // Generate random lower case letter. |
- ret.push_back(static_cast<char>(base::RandInt(kMinLower, kMaxLower))); |
- } else if (i == positions[2]) { |
- // Generate random digit. |
- ret.push_back(static_cast<char>(base::RandInt(kMinDigit, kMaxDigit))); |
- } else if (i == positions[3]) { |
- // Generate random other symbol. |
- ret.push_back( |
- kOtherSymbols[base::RandInt(0, arraysize(kOtherSymbols) - 1)]); |
- } else { |
- // Generate random alphanumeric character. We don't use other symbols |
- // here as most sites don't allow a lot of non-alphanumeric characters. |
- ret.push_back( |
- alphanumeric_characters.at( |
- base::RandInt(0, alphanumeric_characters.size() - 1))); |
- } |
- } |
- return ret; |
-} |
- |
-} // namespace autofill |