diff options
Diffstat (limited to 'telephony/java/android/service')
| -rw-r--r-- | telephony/java/android/service/euicc/EuiccService.java | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/telephony/java/android/service/euicc/EuiccService.java b/telephony/java/android/service/euicc/EuiccService.java index ef11f469d9a0..93155865c166 100644 --- a/telephony/java/android/service/euicc/EuiccService.java +++ b/telephony/java/android/service/euicc/EuiccService.java @@ -31,7 +31,9 @@ import android.os.RemoteException; import android.telephony.TelephonyManager; import android.telephony.euicc.DownloadableSubscription; import android.telephony.euicc.EuiccInfo; +import android.telephony.euicc.EuiccManager; import android.telephony.euicc.EuiccManager.OtaStatus; +import android.text.TextUtils; import android.util.Log; import java.io.PrintWriter; @@ -311,6 +313,65 @@ public abstract class EuiccService extends Service { mStubWrapper = new IEuiccServiceWrapper(); } + /** + * Given a SubjectCode[5.2.6.1] and ReasonCode[5.2.6.2] from GSMA (SGP.22 v2.2), encode it to + * the format described in + * {@link android.telephony.euicc.EuiccManager#OPERATION_SMDX_SUBJECT_REASON_CODE} + * + * @param subjectCode SubjectCode[5.2.6.1] from GSMA (SGP.22 v2.2) + * @param reasonCode ReasonCode[5.2.6.2] from GSMA (SGP.22 v2.2) + * @return encoded error code described in + * {@link android.telephony.euicc.EuiccManager#OPERATION_SMDX_SUBJECT_REASON_CODE} + * @throws NumberFormatException when the Subject/Reason code contains non digits + * @throws IllegalArgumentException when Subject/Reason code is null/empty + * @throws UnsupportedOperationException when sections has more than four layers (e.g 5.8.1.2) + * or when an number is bigger than 15 + */ + public int encodeSmdxSubjectAndReasonCode(@Nullable String subjectCode, + @Nullable String reasonCode) + throws NumberFormatException, IllegalArgumentException, UnsupportedOperationException { + final int maxSupportedSection = 3; + final int maxSupportedDigit = 15; + final int bitsPerSection = 4; + + if (TextUtils.isEmpty(subjectCode) || TextUtils.isEmpty(reasonCode)) { + throw new IllegalArgumentException("SubjectCode/ReasonCode is empty"); + } + + final String[] subjectCodeToken = subjectCode.split("\\."); + final String[] reasonCodeToken = reasonCode.split("\\."); + + if (subjectCodeToken.length > maxSupportedSection + || reasonCodeToken.length > maxSupportedSection) { + throw new UnsupportedOperationException("Only three nested layer is supported."); + } + + int result = EuiccManager.OPERATION_SMDX_SUBJECT_REASON_CODE; + + // Pad the 0s needed for subject code + result = result << (maxSupportedSection - subjectCodeToken.length) * bitsPerSection; + + for (String digitString : subjectCodeToken) { + int num = Integer.parseInt(digitString); + if (num > maxSupportedDigit) { + throw new UnsupportedOperationException("SubjectCode exceeds " + maxSupportedDigit); + } + result = (result << bitsPerSection) + num; + } + + // Pad the 0s needed for reason code + result = result << (maxSupportedSection - reasonCodeToken.length) * bitsPerSection; + for (String digitString : reasonCodeToken) { + int num = Integer.parseInt(digitString); + if (num > maxSupportedDigit) { + throw new UnsupportedOperationException("ReasonCode exceeds " + maxSupportedDigit); + } + result = (result << bitsPerSection) + num; + } + + return result; + } + @Override @CallSuper public void onCreate() { |