| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.telephony; |
| |
| import android.annotation.NonNull; |
| import android.annotation.SystemApi; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.Log; |
| |
| import java.util.Objects; |
| import java.util.regex.Pattern; |
| |
| /** |
| * This class is used to represent a range of phone numbers. Each range corresponds to a contiguous |
| * block of phone numbers. |
| * |
| * Example: |
| * {@code |
| * { |
| * mCountryCode = "1" |
| * mPrefix = "650555" |
| * mLowerBound = "0055" |
| * mUpperBound = "0899" |
| * } |
| * } |
| * would match 16505550089 and 6505550472, but not 63827593759 or 16505550900 |
| * @hide |
| */ |
| @SystemApi |
| public final class PhoneNumberRange implements Parcelable { |
| public static final Creator<PhoneNumberRange> CREATOR = new Creator<PhoneNumberRange>() { |
| @Override |
| public PhoneNumberRange createFromParcel(Parcel in) { |
| return new PhoneNumberRange(in); |
| } |
| |
| @Override |
| public PhoneNumberRange[] newArray(int size) { |
| return new PhoneNumberRange[size]; |
| } |
| }; |
| |
| private final String mCountryCode; |
| private final String mPrefix; |
| private final String mLowerBound; |
| private final String mUpperBound; |
| |
| /** |
| * @param countryCode The country code, omitting the leading "+" |
| * @param prefix A prefix that all numbers matching the range must have. |
| * @param lowerBound When concatenated with the prefix, represents the lower bound of phone |
| * numbers that match this range. |
| * @param upperBound When concatenated with the prefix, represents the upper bound of phone |
| * numbers that match this range. |
| */ |
| public PhoneNumberRange(@NonNull String countryCode, @NonNull String prefix, |
| @NonNull String lowerBound, @NonNull String upperBound) { |
| validateLowerAndUpperBounds(lowerBound, upperBound); |
| if (!Pattern.matches("[0-9]+", countryCode)) { |
| throw new IllegalArgumentException("Country code must be all numeric"); |
| } |
| if (!Pattern.matches("[0-9]+", prefix)) { |
| throw new IllegalArgumentException("Prefix must be all numeric"); |
| } |
| mCountryCode = countryCode; |
| mPrefix = prefix; |
| mLowerBound = lowerBound; |
| mUpperBound = upperBound; |
| } |
| |
| private PhoneNumberRange(Parcel in) { |
| mCountryCode = in.readStringNoHelper(); |
| mPrefix = in.readStringNoHelper(); |
| mLowerBound = in.readStringNoHelper(); |
| mUpperBound = in.readStringNoHelper(); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeStringNoHelper(mCountryCode); |
| dest.writeStringNoHelper(mPrefix); |
| dest.writeStringNoHelper(mLowerBound); |
| dest.writeStringNoHelper(mUpperBound); |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| PhoneNumberRange that = (PhoneNumberRange) o; |
| return Objects.equals(mCountryCode, that.mCountryCode) |
| && Objects.equals(mPrefix, that.mPrefix) |
| && Objects.equals(mLowerBound, that.mLowerBound) |
| && Objects.equals(mUpperBound, that.mUpperBound); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mCountryCode, mPrefix, mLowerBound, mUpperBound); |
| } |
| |
| @Override |
| public String toString() { |
| return "PhoneNumberRange{" |
| + "mCountryCode='" + mCountryCode + '\'' |
| + ", mPrefix='" + mPrefix + '\'' |
| + ", mLowerBound='" + mLowerBound + '\'' |
| + ", mUpperBound='" + mUpperBound + '\'' |
| + '}'; |
| } |
| |
| private void validateLowerAndUpperBounds(String lowerBound, String upperBound) { |
| if (lowerBound.length() != upperBound.length()) { |
| throw new IllegalArgumentException("Lower and upper bounds must have the same length"); |
| } |
| if (!Pattern.matches("[0-9]+", lowerBound)) { |
| throw new IllegalArgumentException("Lower bound must be all numeric"); |
| } |
| if (!Pattern.matches("[0-9]+", upperBound)) { |
| throw new IllegalArgumentException("Upper bound must be all numeric"); |
| } |
| if (Integer.parseInt(lowerBound) > Integer.parseInt(upperBound)) { |
| throw new IllegalArgumentException("Lower bound must be lower than upper bound"); |
| } |
| } |
| |
| /** |
| * Checks to see if the provided phone number matches this range. |
| * @param number A phone number, with or without separators or a country code. |
| * @return {@code true} if the number matches, {@code false} otherwise. |
| */ |
| public boolean matches(String number) { |
| // Check the prefix, make sure it matches either with or without the country code. |
| String normalizedNumber = number.replaceAll("[^0-9]", ""); |
| String prefixWithCountryCode = mCountryCode + mPrefix; |
| String numberPostfix; |
| if (normalizedNumber.startsWith(prefixWithCountryCode)) { |
| numberPostfix = normalizedNumber.substring(prefixWithCountryCode.length()); |
| } else if (normalizedNumber.startsWith(mPrefix)) { |
| numberPostfix = normalizedNumber.substring(mPrefix.length()); |
| } else { |
| return false; |
| } |
| |
| // Next check the postfix to make sure it lies within the bounds. |
| try { |
| int lower = Integer.parseInt(mLowerBound); |
| int upper = Integer.parseInt(mUpperBound); |
| int numberToCheck = Integer.parseInt(numberPostfix); |
| return numberToCheck <= upper && numberToCheck >= lower; |
| } catch (NumberFormatException e) { |
| Log.e(PhoneNumberRange.class.getSimpleName(), "Invalid bounds or number.", e); |
| return false; |
| } |
| } |
| } |