Merge "Changed regex matching for MCC and MNC" (5ffb4ad6) · Commits · e / os / android_frameworks_base

telephony/java/android/telephony/CellIdentity.java

+29 −2

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		package android.telephony;

		import android.annotation.CallSuper;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.os.Parcel;
		import android.os.Parcelable;
		@@ -61,7 +62,7 @@ public abstract class CellIdentity implements Parcelable {
		mType = type;

		// Only allow INT_MAX if unknown string mcc/mnc
		if (mcc == null \|\| mcc.matches("^[0-9]{3}$")) {
		if (mcc == null \|\| isMcc(mcc)) {
		mMccStr = mcc;
		} else if (mcc.isEmpty() \|\| mcc.equals(String.valueOf(Integer.MAX_VALUE))) {
		// If the mccStr is empty or unknown, set it as null.
		@@ -73,7 +74,7 @@ public abstract class CellIdentity implements Parcelable {
		log("invalid MCC format: " + mcc);
		}

		if (mnc == null \|\| mnc.matches("^[0-9]{2,3}$")) {
		if (mnc == null \|\| isMnc(mnc)) {
		mMncStr = mnc;
		} else if (mnc.isEmpty() \|\| mnc.equals(String.valueOf(Integer.MAX_VALUE))) {
		// If the mncStr is empty or unknown, set it as null.
		@@ -262,4 +263,30 @@ public abstract class CellIdentity implements Parcelable {
		if ((value < rangeMin \|\| value > rangeMax) && value != special) return CellInfo.UNAVAILABLE;
		return value;
		}

		/** @hide */
		private static boolean isMcc(@NonNull String mcc) {
		// ensure no out of bounds indexing
		if (mcc.length() != 3) return false;

		// Character.isDigit allows all unicode digits, not just [0-9]
		for (int i = 0; i < 3; i++) {
		if (mcc.charAt(i) < '0' \|\| mcc.charAt(i) > '9') return false;
		}

		return true;
		}

		/** @hide */
		private static boolean isMnc(@NonNull String mnc) {
		// ensure no out of bounds indexing
		if (mnc.length() < 2 \|\| mnc.length() > 3) return false;

		// Character.isDigit allows all unicode digits, not just [0-9]
		for (int i = 0; i < mnc.length(); i++) {
		if (mnc.charAt(i) < '0' \|\| mnc.charAt(i) > '9') return false;
		}

		return true;
		}
		}