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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.telephony;
     18 
     19 import android.os.Binder;
     20 import android.os.Parcel;
     21 import android.content.res.Resources;
     22 import android.text.TextUtils;
     23 
     24 import com.android.internal.telephony.GsmAlphabet;
     25 import com.android.internal.telephony.GsmAlphabet.TextEncodingDetails;
     26 import com.android.internal.telephony.SmsConstants;
     27 import com.android.internal.telephony.SmsMessageBase;
     28 import com.android.internal.telephony.SmsMessageBase.SubmitPduBase;
     29 import com.android.internal.telephony.Sms7BitEncodingTranslator;
     30 
     31 import java.lang.Math;
     32 import java.util.ArrayList;
     33 import java.util.Arrays;
     34 
     35 import static android.telephony.TelephonyManager.PHONE_TYPE_CDMA;
     36 
     37 
     38 /**
     39  * A Short Message Service message.
     40  * @see android.provider.Telephony.Sms.Intents#getMessagesFromIntent
     41  */
     42 public class SmsMessage {
     43     private static final String LOG_TAG = "SmsMessage";
     44 
     45     /**
     46      * SMS Class enumeration.
     47      * See TS 23.038.
     48      *
     49      */
     50     public enum MessageClass{
     51         UNKNOWN, CLASS_0, CLASS_1, CLASS_2, CLASS_3;
     52     }
     53 
     54     /** User data text encoding code unit size */
     55     public static final int ENCODING_UNKNOWN = 0;
     56     public static final int ENCODING_7BIT = 1;
     57     public static final int ENCODING_8BIT = 2;
     58     public static final int ENCODING_16BIT = 3;
     59     /**
     60      * @hide This value is not defined in global standard. Only in Korea, this is used.
     61      */
     62     public static final int ENCODING_KSC5601 = 4;
     63 
     64     /** The maximum number of payload bytes per message */
     65     public static final int MAX_USER_DATA_BYTES = 140;
     66 
     67     /**
     68      * The maximum number of payload bytes per message if a user data header
     69      * is present.  This assumes the header only contains the
     70      * CONCATENATED_8_BIT_REFERENCE element.
     71      */
     72     public static final int MAX_USER_DATA_BYTES_WITH_HEADER = 134;
     73 
     74     /** The maximum number of payload septets per message */
     75     public static final int MAX_USER_DATA_SEPTETS = 160;
     76 
     77     /**
     78      * The maximum number of payload septets per message if a user data header
     79      * is present.  This assumes the header only contains the
     80      * CONCATENATED_8_BIT_REFERENCE element.
     81      */
     82     public static final int MAX_USER_DATA_SEPTETS_WITH_HEADER = 153;
     83 
     84     /**
     85      * Indicates a 3GPP format SMS message.
     86      * @hide pending API council approval
     87      */
     88     public static final String FORMAT_3GPP = "3gpp";
     89 
     90     /**
     91      * Indicates a 3GPP2 format SMS message.
     92      * @hide pending API council approval
     93      */
     94     public static final String FORMAT_3GPP2 = "3gpp2";
     95 
     96     /** Contains actual SmsMessage. Only public for debugging and for framework layer.
     97      *
     98      * @hide
     99      */
    100     public SmsMessageBase mWrappedSmsMessage;
    101 
    102     /** Indicates the subId
    103      *
    104      * @hide
    105      */
    106     private int mSubId = 0;
    107 
    108     /** set Subscription information
    109      *
    110      * @hide
    111      */
    112     public void setSubId(int subId) {
    113         mSubId = subId;
    114     }
    115 
    116     /** get Subscription information
    117      *
    118      * @hide
    119      */
    120     public int getSubId() {
    121         return mSubId;
    122     }
    123 
    124     public static class SubmitPdu {
    125 
    126         public byte[] encodedScAddress; // Null if not applicable.
    127         public byte[] encodedMessage;
    128 
    129         @Override
    130         public String toString() {
    131             return "SubmitPdu: encodedScAddress = "
    132                     + Arrays.toString(encodedScAddress)
    133                     + ", encodedMessage = "
    134                     + Arrays.toString(encodedMessage);
    135         }
    136 
    137         /**
    138          * @hide
    139          */
    140         protected SubmitPdu(SubmitPduBase spb) {
    141             this.encodedMessage = spb.encodedMessage;
    142             this.encodedScAddress = spb.encodedScAddress;
    143         }
    144 
    145     }
    146 
    147     private SmsMessage(SmsMessageBase smb) {
    148         mWrappedSmsMessage = smb;
    149     }
    150 
    151     /**
    152      * Create an SmsMessage from a raw PDU. Guess format based on Voice
    153      * technology first, if it fails use other format.
    154      * All applications which handle
    155      * incoming SMS messages by processing the {@code SMS_RECEIVED_ACTION} broadcast
    156      * intent <b>must</b> now pass the new {@code format} String extra from the intent
    157      * into the new method {@code createFromPdu(byte[], String)} which takes an
    158      * extra format parameter. This is required in order to correctly decode the PDU on
    159      * devices that require support for both 3GPP and 3GPP2 formats at the same time,
    160      * such as dual-mode GSM/CDMA and CDMA/LTE phones.
    161      * @deprecated Use {@link #createFromPdu(byte[], String)} instead.
    162      */
    163     @Deprecated
    164     public static SmsMessage createFromPdu(byte[] pdu) {
    165          SmsMessage message = null;
    166 
    167         // cdma(3gpp2) vs gsm(3gpp) format info was not given,
    168         // guess from active voice phone type
    169         int activePhone = TelephonyManager.getDefault().getCurrentPhoneType();
    170         String format = (PHONE_TYPE_CDMA == activePhone) ?
    171                 SmsConstants.FORMAT_3GPP2 : SmsConstants.FORMAT_3GPP;
    172         message = createFromPdu(pdu, format);
    173 
    174         if (null == message || null == message.mWrappedSmsMessage) {
    175             // decoding pdu failed based on activePhone type, must be other format
    176             format = (PHONE_TYPE_CDMA == activePhone) ?
    177                     SmsConstants.FORMAT_3GPP : SmsConstants.FORMAT_3GPP2;
    178             message = createFromPdu(pdu, format);
    179         }
    180         return message;
    181     }
    182 
    183     /**
    184      * Create an SmsMessage from a raw PDU with the specified message format. The
    185      * message format is passed in the
    186      * {@link android.provider.Telephony.Sms.Intents#SMS_RECEIVED_ACTION} as the {@code format}
    187      * String extra, and will be either "3gpp" for GSM/UMTS/LTE messages in 3GPP format
    188      * or "3gpp2" for CDMA/LTE messages in 3GPP2 format.
    189      *
    190      * @param pdu the message PDU from the
    191      * {@link android.provider.Telephony.Sms.Intents#SMS_RECEIVED_ACTION} intent
    192      * @param format the format extra from the
    193      * {@link android.provider.Telephony.Sms.Intents#SMS_RECEIVED_ACTION} intent
    194      */
    195     public static SmsMessage createFromPdu(byte[] pdu, String format) {
    196         SmsMessageBase wrappedMessage;
    197 
    198         if (SmsConstants.FORMAT_3GPP2.equals(format)) {
    199             wrappedMessage = com.android.internal.telephony.cdma.SmsMessage.createFromPdu(pdu);
    200         } else if (SmsConstants.FORMAT_3GPP.equals(format)) {
    201             wrappedMessage = com.android.internal.telephony.gsm.SmsMessage.createFromPdu(pdu);
    202         } else {
    203             Rlog.e(LOG_TAG, "createFromPdu(): unsupported message format " + format);
    204             return null;
    205         }
    206 
    207         return new SmsMessage(wrappedMessage);
    208     }
    209 
    210     /**
    211      * TS 27.005 3.4.1 lines[0] and lines[1] are the two lines read from the
    212      * +CMT unsolicited response (PDU mode, of course)
    213      *  +CMT: [&lt;alpha>],<length><CR><LF><pdu>
    214      *
    215      * Only public for debugging and for RIL
    216      *
    217      * {@hide}
    218      */
    219     public static SmsMessage newFromCMT(String[] lines) {
    220         // received SMS in 3GPP format
    221         SmsMessageBase wrappedMessage =
    222                 com.android.internal.telephony.gsm.SmsMessage.newFromCMT(lines);
    223 
    224         return new SmsMessage(wrappedMessage);
    225     }
    226 
    227     /** @hide */
    228     public static SmsMessage newFromParcel(Parcel p) {
    229         // received SMS in 3GPP2 format
    230         SmsMessageBase wrappedMessage =
    231                 com.android.internal.telephony.cdma.SmsMessage.newFromParcel(p);
    232 
    233         return new SmsMessage(wrappedMessage);
    234     }
    235 
    236     /**
    237      * Create an SmsMessage from an SMS EF record.
    238      *
    239      * @param index Index of SMS record. This should be index in ArrayList
    240      *              returned by SmsManager.getAllMessagesFromSim + 1.
    241      * @param data Record data.
    242      * @return An SmsMessage representing the record.
    243      *
    244      * @hide
    245      */
    246     public static SmsMessage createFromEfRecord(int index, byte[] data) {
    247         SmsMessageBase wrappedMessage;
    248 
    249         if (isCdmaVoice()) {
    250             wrappedMessage = com.android.internal.telephony.cdma.SmsMessage.createFromEfRecord(
    251                     index, data);
    252         } else {
    253             wrappedMessage = com.android.internal.telephony.gsm.SmsMessage.createFromEfRecord(
    254                     index, data);
    255         }
    256 
    257         return wrappedMessage != null ? new SmsMessage(wrappedMessage) : null;
    258     }
    259 
    260     /**
    261      * Get the TP-Layer-Length for the given SMS-SUBMIT PDU Basically, the
    262      * length in bytes (not hex chars) less the SMSC header
    263      *
    264      * FIXME: This method is only used by a CTS test case that isn't run on CDMA devices.
    265      * We should probably deprecate it and remove the obsolete test case.
    266      */
    267     public static int getTPLayerLengthForPDU(String pdu) {
    268         if (isCdmaVoice()) {
    269             return com.android.internal.telephony.cdma.SmsMessage.getTPLayerLengthForPDU(pdu);
    270         } else {
    271             return com.android.internal.telephony.gsm.SmsMessage.getTPLayerLengthForPDU(pdu);
    272         }
    273     }
    274 
    275     /*
    276      * TODO(cleanup): It would make some sense if the result of
    277      * preprocessing a message to determine the proper encoding (i.e.
    278      * the resulting data structure from calculateLength) could be
    279      * passed as an argument to the actual final encoding function.
    280      * This would better ensure that the logic behind size calculation
    281      * actually matched the encoding.
    282      */
    283 
    284     /**
    285      * Calculates the number of SMS's required to encode the message body and
    286      * the number of characters remaining until the next message.
    287      *
    288      * @param msgBody the message to encode
    289      * @param use7bitOnly if true, characters that are not part of the
    290      *         radio-specific 7-bit encoding are counted as single
    291      *         space chars.  If false, and if the messageBody contains
    292      *         non-7-bit encodable characters, length is calculated
    293      *         using a 16-bit encoding.
    294      * @return an int[4] with int[0] being the number of SMS's
    295      *         required, int[1] the number of code units used, and
    296      *         int[2] is the number of code units remaining until the
    297      *         next message. int[3] is an indicator of the encoding
    298      *         code unit size (see the ENCODING_* definitions in SmsConstants)
    299      */
    300     public static int[] calculateLength(CharSequence msgBody, boolean use7bitOnly) {
    301         // this function is for MO SMS
    302         TextEncodingDetails ted = (useCdmaFormatForMoSms()) ?
    303             com.android.internal.telephony.cdma.SmsMessage.calculateLength(msgBody, use7bitOnly,
    304                     true) :
    305             com.android.internal.telephony.gsm.SmsMessage.calculateLength(msgBody, use7bitOnly);
    306         int ret[] = new int[4];
    307         ret[0] = ted.msgCount;
    308         ret[1] = ted.codeUnitCount;
    309         ret[2] = ted.codeUnitsRemaining;
    310         ret[3] = ted.codeUnitSize;
    311         return ret;
    312     }
    313 
    314     /**
    315      * Divide a message text into several fragments, none bigger than
    316      * the maximum SMS message text size.
    317      *
    318      * @param text text, must not be null.
    319      * @return an <code>ArrayList</code> of strings that, in order,
    320      *   comprise the original msg text
    321      *
    322      * @hide
    323      */
    324     public static ArrayList<String> fragmentText(String text) {
    325         // This function is for MO SMS
    326         TextEncodingDetails ted = (useCdmaFormatForMoSms()) ?
    327             com.android.internal.telephony.cdma.SmsMessage.calculateLength(text, false, true) :
    328             com.android.internal.telephony.gsm.SmsMessage.calculateLength(text, false);
    329 
    330         // TODO(cleanup): The code here could be rolled into the logic
    331         // below cleanly if these MAX_* constants were defined more
    332         // flexibly...
    333 
    334         int limit;
    335         if (ted.codeUnitSize == SmsConstants.ENCODING_7BIT) {
    336             int udhLength;
    337             if (ted.languageTable != 0 && ted.languageShiftTable != 0) {
    338                 udhLength = GsmAlphabet.UDH_SEPTET_COST_TWO_SHIFT_TABLES;
    339             } else if (ted.languageTable != 0 || ted.languageShiftTable != 0) {
    340                 udhLength = GsmAlphabet.UDH_SEPTET_COST_ONE_SHIFT_TABLE;
    341             } else {
    342                 udhLength = 0;
    343             }
    344 
    345             if (ted.msgCount > 1) {
    346                 udhLength += GsmAlphabet.UDH_SEPTET_COST_CONCATENATED_MESSAGE;
    347             }
    348 
    349             if (udhLength != 0) {
    350                 udhLength += GsmAlphabet.UDH_SEPTET_COST_LENGTH;
    351             }
    352 
    353             limit = SmsConstants.MAX_USER_DATA_SEPTETS - udhLength;
    354         } else {
    355             if (ted.msgCount > 1) {
    356                 limit = SmsConstants.MAX_USER_DATA_BYTES_WITH_HEADER;
    357                 // If EMS is not supported, break down EMS into single segment SMS
    358                 // and add page info " x/y".
    359                 // In the case of UCS2 encoding, we need 8 bytes for this,
    360                 // but we only have 6 bytes from UDH, so truncate the limit for
    361                 // each segment by 2 bytes (1 char).
    362                 // Make sure total number of segments is less than 10.
    363                 if (!hasEmsSupport() && ted.msgCount < 10) {
    364                     limit -= 2;
    365                 }
    366             } else {
    367                 limit = SmsConstants.MAX_USER_DATA_BYTES;
    368             }
    369         }
    370 
    371         String newMsgBody = null;
    372         Resources r = Resources.getSystem();
    373         if (r.getBoolean(com.android.internal.R.bool.config_sms_force_7bit_encoding)) {
    374             newMsgBody  = Sms7BitEncodingTranslator.translate(text);
    375         }
    376         if (TextUtils.isEmpty(newMsgBody)) {
    377             newMsgBody = text;
    378         }
    379         int pos = 0;  // Index in code units.
    380         int textLen = newMsgBody.length();
    381         ArrayList<String> result = new ArrayList<String>(ted.msgCount);
    382         while (pos < textLen) {
    383             int nextPos = 0;  // Counts code units.
    384             if (ted.codeUnitSize == SmsConstants.ENCODING_7BIT) {
    385                 if (useCdmaFormatForMoSms() && ted.msgCount == 1) {
    386                     // For a singleton CDMA message, the encoding must be ASCII...
    387                     nextPos = pos + Math.min(limit, textLen - pos);
    388                 } else {
    389                     // For multi-segment messages, CDMA 7bit equals GSM 7bit encoding (EMS mode).
    390                     nextPos = GsmAlphabet.findGsmSeptetLimitIndex(newMsgBody, pos, limit,
    391                             ted.languageTable, ted.languageShiftTable);
    392                 }
    393             } else {  // Assume unicode.
    394                 nextPos = SmsMessageBase.findNextUnicodePosition(pos, limit, newMsgBody);
    395             }
    396             if ((nextPos <= pos) || (nextPos > textLen)) {
    397                 Rlog.e(LOG_TAG, "fragmentText failed (" + pos + " >= " + nextPos + " or " +
    398                           nextPos + " >= " + textLen + ")");
    399                 break;
    400             }
    401             result.add(newMsgBody.substring(pos, nextPos));
    402             pos = nextPos;
    403         }
    404         return result;
    405     }
    406 
    407     /**
    408      * Calculates the number of SMS's required to encode the message body and
    409      * the number of characters remaining until the next message, given the
    410      * current encoding.
    411      *
    412      * @param messageBody the message to encode
    413      * @param use7bitOnly if true, characters that are not part of the radio
    414      *         specific (GSM / CDMA) alphabet encoding are converted to as a
    415      *         single space characters. If false, a messageBody containing
    416      *         non-GSM or non-CDMA alphabet characters are encoded using
    417      *         16-bit encoding.
    418      * @return an int[4] with int[0] being the number of SMS's required, int[1]
    419      *         the number of code units used, and int[2] is the number of code
    420      *         units remaining until the next message. int[3] is the encoding
    421      *         type that should be used for the message.
    422      */
    423     public static int[] calculateLength(String messageBody, boolean use7bitOnly) {
    424         return calculateLength((CharSequence)messageBody, use7bitOnly);
    425     }
    426 
    427     /*
    428      * TODO(cleanup): It looks like there is now no useful reason why
    429      * apps should generate pdus themselves using these routines,
    430      * instead of handing the raw data to SMSDispatcher (and thereby
    431      * have the phone process do the encoding).  Moreover, CDMA now
    432      * has shared state (in the form of the msgId system property)
    433      * which can only be modified by the phone process, and hence
    434      * makes the output of these routines incorrect.  Since they now
    435      * serve no purpose, they should probably just return null
    436      * directly, and be deprecated.  Going further in that direction,
    437      * the above parsers of serialized pdu data should probably also
    438      * be gotten rid of, hiding all but the necessarily visible
    439      * structured data from client apps.  A possible concern with
    440      * doing this is that apps may be using these routines to generate
    441      * pdus that are then sent elsewhere, some network server, for
    442      * example, and that always returning null would thereby break
    443      * otherwise useful apps.
    444      */
    445 
    446     /**
    447      * Get an SMS-SUBMIT PDU for a destination address and a message.
    448      * This method will not attempt to use any GSM national language 7 bit encodings.
    449      *
    450      * @param scAddress Service Centre address.  Null means use default.
    451      * @return a <code>SubmitPdu</code> containing the encoded SC
    452      *         address, if applicable, and the encoded message.
    453      *         Returns null on encode error.
    454      */
    455     public static SubmitPdu getSubmitPdu(String scAddress,
    456             String destinationAddress, String message, boolean statusReportRequested) {
    457         SubmitPduBase spb;
    458 
    459         if (useCdmaFormatForMoSms()) {
    460             spb = com.android.internal.telephony.cdma.SmsMessage.getSubmitPdu(scAddress,
    461                     destinationAddress, message, statusReportRequested, null);
    462         } else {
    463             spb = com.android.internal.telephony.gsm.SmsMessage.getSubmitPdu(scAddress,
    464                     destinationAddress, message, statusReportRequested);
    465         }
    466 
    467         return new SubmitPdu(spb);
    468     }
    469 
    470     /**
    471      * Get an SMS-SUBMIT PDU for a data message to a destination address &amp; port.
    472      * This method will not attempt to use any GSM national language 7 bit encodings.
    473      *
    474      * @param scAddress Service Centre address. null == use default
    475      * @param destinationAddress the address of the destination for the message
    476      * @param destinationPort the port to deliver the message to at the
    477      *        destination
    478      * @param data the data for the message
    479      * @return a <code>SubmitPdu</code> containing the encoded SC
    480      *         address, if applicable, and the encoded message.
    481      *         Returns null on encode error.
    482      */
    483     public static SubmitPdu getSubmitPdu(String scAddress,
    484             String destinationAddress, short destinationPort, byte[] data,
    485             boolean statusReportRequested) {
    486         SubmitPduBase spb;
    487 
    488         if (useCdmaFormatForMoSms()) {
    489             spb = com.android.internal.telephony.cdma.SmsMessage.getSubmitPdu(scAddress,
    490                     destinationAddress, destinationPort, data, statusReportRequested);
    491         } else {
    492             spb = com.android.internal.telephony.gsm.SmsMessage.getSubmitPdu(scAddress,
    493                     destinationAddress, destinationPort, data, statusReportRequested);
    494         }
    495 
    496         return new SubmitPdu(spb);
    497     }
    498 
    499     /**
    500      * Returns the address of the SMS service center that relayed this message
    501      * or null if there is none.
    502      */
    503     public String getServiceCenterAddress() {
    504         return mWrappedSmsMessage.getServiceCenterAddress();
    505     }
    506 
    507     /**
    508      * Returns the originating address (sender) of this SMS message in String
    509      * form or null if unavailable
    510      */
    511     public String getOriginatingAddress() {
    512         return mWrappedSmsMessage.getOriginatingAddress();
    513     }
    514 
    515     /**
    516      * Returns the originating address, or email from address if this message
    517      * was from an email gateway. Returns null if originating address
    518      * unavailable.
    519      */
    520     public String getDisplayOriginatingAddress() {
    521         return mWrappedSmsMessage.getDisplayOriginatingAddress();
    522     }
    523 
    524     /**
    525      * Returns the message body as a String, if it exists and is text based.
    526      * @return message body is there is one, otherwise null
    527      */
    528     public String getMessageBody() {
    529         return mWrappedSmsMessage.getMessageBody();
    530     }
    531 
    532     /**
    533      * Returns the class of this message.
    534      */
    535     public MessageClass getMessageClass() {
    536         switch(mWrappedSmsMessage.getMessageClass()) {
    537             case CLASS_0: return MessageClass.CLASS_0;
    538             case CLASS_1: return MessageClass.CLASS_1;
    539             case CLASS_2: return MessageClass.CLASS_2;
    540             case CLASS_3: return MessageClass.CLASS_3;
    541             default: return MessageClass.UNKNOWN;
    542 
    543         }
    544     }
    545 
    546     /**
    547      * Returns the message body, or email message body if this message was from
    548      * an email gateway. Returns null if message body unavailable.
    549      */
    550     public String getDisplayMessageBody() {
    551         return mWrappedSmsMessage.getDisplayMessageBody();
    552     }
    553 
    554     /**
    555      * Unofficial convention of a subject line enclosed in parens empty string
    556      * if not present
    557      */
    558     public String getPseudoSubject() {
    559         return mWrappedSmsMessage.getPseudoSubject();
    560     }
    561 
    562     /**
    563      * Returns the service centre timestamp in currentTimeMillis() format
    564      */
    565     public long getTimestampMillis() {
    566         return mWrappedSmsMessage.getTimestampMillis();
    567     }
    568 
    569     /**
    570      * Returns true if message is an email.
    571      *
    572      * @return true if this message came through an email gateway and email
    573      *         sender / subject / parsed body are available
    574      */
    575     public boolean isEmail() {
    576         return mWrappedSmsMessage.isEmail();
    577     }
    578 
    579      /**
    580      * @return if isEmail() is true, body of the email sent through the gateway.
    581      *         null otherwise
    582      */
    583     public String getEmailBody() {
    584         return mWrappedSmsMessage.getEmailBody();
    585     }
    586 
    587     /**
    588      * @return if isEmail() is true, email from address of email sent through
    589      *         the gateway. null otherwise
    590      */
    591     public String getEmailFrom() {
    592         return mWrappedSmsMessage.getEmailFrom();
    593     }
    594 
    595     /**
    596      * Get protocol identifier.
    597      */
    598     public int getProtocolIdentifier() {
    599         return mWrappedSmsMessage.getProtocolIdentifier();
    600     }
    601 
    602     /**
    603      * See TS 23.040 9.2.3.9 returns true if this is a "replace short message"
    604      * SMS
    605      */
    606     public boolean isReplace() {
    607         return mWrappedSmsMessage.isReplace();
    608     }
    609 
    610     /**
    611      * Returns true for CPHS MWI toggle message.
    612      *
    613      * @return true if this is a CPHS MWI toggle message See CPHS 4.2 section
    614      *         B.4.2
    615      */
    616     public boolean isCphsMwiMessage() {
    617         return mWrappedSmsMessage.isCphsMwiMessage();
    618     }
    619 
    620     /**
    621      * returns true if this message is a CPHS voicemail / message waiting
    622      * indicator (MWI) clear message
    623      */
    624     public boolean isMWIClearMessage() {
    625         return mWrappedSmsMessage.isMWIClearMessage();
    626     }
    627 
    628     /**
    629      * returns true if this message is a CPHS voicemail / message waiting
    630      * indicator (MWI) set message
    631      */
    632     public boolean isMWISetMessage() {
    633         return mWrappedSmsMessage.isMWISetMessage();
    634     }
    635 
    636     /**
    637      * returns true if this message is a "Message Waiting Indication Group:
    638      * Discard Message" notification and should not be stored.
    639      */
    640     public boolean isMwiDontStore() {
    641         return mWrappedSmsMessage.isMwiDontStore();
    642     }
    643 
    644     /**
    645      * returns the user data section minus the user data header if one was
    646      * present.
    647      */
    648     public byte[] getUserData() {
    649         return mWrappedSmsMessage.getUserData();
    650     }
    651 
    652     /**
    653      * Returns the raw PDU for the message.
    654      *
    655      * @return the raw PDU for the message.
    656      */
    657     public byte[] getPdu() {
    658         return mWrappedSmsMessage.getPdu();
    659     }
    660 
    661     /**
    662      * Returns the status of the message on the SIM (read, unread, sent, unsent).
    663      *
    664      * @return the status of the message on the SIM.  These are:
    665      *         SmsManager.STATUS_ON_SIM_FREE
    666      *         SmsManager.STATUS_ON_SIM_READ
    667      *         SmsManager.STATUS_ON_SIM_UNREAD
    668      *         SmsManager.STATUS_ON_SIM_SEND
    669      *         SmsManager.STATUS_ON_SIM_UNSENT
    670      * @deprecated Use getStatusOnIcc instead.
    671      */
    672     @Deprecated public int getStatusOnSim() {
    673         return mWrappedSmsMessage.getStatusOnIcc();
    674     }
    675 
    676     /**
    677      * Returns the status of the message on the ICC (read, unread, sent, unsent).
    678      *
    679      * @return the status of the message on the ICC.  These are:
    680      *         SmsManager.STATUS_ON_ICC_FREE
    681      *         SmsManager.STATUS_ON_ICC_READ
    682      *         SmsManager.STATUS_ON_ICC_UNREAD
    683      *         SmsManager.STATUS_ON_ICC_SEND
    684      *         SmsManager.STATUS_ON_ICC_UNSENT
    685      */
    686     public int getStatusOnIcc() {
    687         return mWrappedSmsMessage.getStatusOnIcc();
    688     }
    689 
    690     /**
    691      * Returns the record index of the message on the SIM (1-based index).
    692      * @return the record index of the message on the SIM, or -1 if this
    693      *         SmsMessage was not created from a SIM SMS EF record.
    694      * @deprecated Use getIndexOnIcc instead.
    695      */
    696     @Deprecated public int getIndexOnSim() {
    697         return mWrappedSmsMessage.getIndexOnIcc();
    698     }
    699 
    700     /**
    701      * Returns the record index of the message on the ICC (1-based index).
    702      * @return the record index of the message on the ICC, or -1 if this
    703      *         SmsMessage was not created from a ICC SMS EF record.
    704      */
    705     public int getIndexOnIcc() {
    706         return mWrappedSmsMessage.getIndexOnIcc();
    707     }
    708 
    709     /**
    710      * GSM:
    711      * For an SMS-STATUS-REPORT message, this returns the status field from
    712      * the status report.  This field indicates the status of a previously
    713      * submitted SMS, if requested.  See TS 23.040, 9.2.3.15 TP-Status for a
    714      * description of values.
    715      * CDMA:
    716      * For not interfering with status codes from GSM, the value is
    717      * shifted to the bits 31-16.
    718      * The value is composed of an error class (bits 25-24) and a status code (bits 23-16).
    719      * Possible codes are described in C.S0015-B, v2.0, 4.5.21.
    720      *
    721      * @return 0 indicates the previously sent message was received.
    722      *         See TS 23.040, 9.9.2.3.15 and C.S0015-B, v2.0, 4.5.21
    723      *         for a description of other possible values.
    724      */
    725     public int getStatus() {
    726         return mWrappedSmsMessage.getStatus();
    727     }
    728 
    729     /**
    730      * Return true iff the message is a SMS-STATUS-REPORT message.
    731      */
    732     public boolean isStatusReportMessage() {
    733         return mWrappedSmsMessage.isStatusReportMessage();
    734     }
    735 
    736     /**
    737      * Returns true iff the <code>TP-Reply-Path</code> bit is set in
    738      * this message.
    739      */
    740     public boolean isReplyPathPresent() {
    741         return mWrappedSmsMessage.isReplyPathPresent();
    742     }
    743 
    744     /**
    745      * Determines whether or not to use CDMA format for MO SMS.
    746      * If SMS over IMS is supported, then format is based on IMS SMS format,
    747      * otherwise format is based on current phone type.
    748      *
    749      * @return true if Cdma format should be used for MO SMS, false otherwise.
    750      */
    751     private static boolean useCdmaFormatForMoSms() {
    752         if (!SmsManager.getDefault().isImsSmsSupported()) {
    753             // use Voice technology to determine SMS format.
    754             return isCdmaVoice();
    755         }
    756         // IMS is registered with SMS support, check the SMS format supported
    757         return (SmsConstants.FORMAT_3GPP2.equals(SmsManager.getDefault().getImsSmsFormat()));
    758     }
    759 
    760     /**
    761      * Determines whether or not to current phone type is cdma.
    762      *
    763      * @return true if current phone type is cdma, false otherwise.
    764      */
    765     private static boolean isCdmaVoice() {
    766         int activePhone = TelephonyManager.getDefault().getCurrentPhoneType();
    767         return (PHONE_TYPE_CDMA == activePhone);
    768     }
    769 
    770     /**
    771      * Decide if the carrier supports long SMS.
    772      * {@hide}
    773      */
    774     public static boolean hasEmsSupport() {
    775         if (!isNoEmsSupportConfigListExisted()) {
    776             return true;
    777         }
    778 
    779         String simOperator;
    780         String gid;
    781         final long identity = Binder.clearCallingIdentity();
    782         try {
    783             simOperator = TelephonyManager.getDefault().getSimOperatorNumeric();
    784             gid = TelephonyManager.getDefault().getGroupIdLevel1();
    785         } finally {
    786             Binder.restoreCallingIdentity(identity);
    787         }
    788 
    789         if (!TextUtils.isEmpty(simOperator)) {
    790             for (NoEmsSupportConfig currentConfig : mNoEmsSupportConfigList) {
    791                 if (simOperator.startsWith(currentConfig.mOperatorNumber) &&
    792                         (TextUtils.isEmpty(currentConfig.mGid1) ||
    793                                 (!TextUtils.isEmpty(currentConfig.mGid1) &&
    794                                         currentConfig.mGid1.equalsIgnoreCase(gid)))) {
    795                     return false;
    796                 }
    797             }
    798         }
    799         return true;
    800     }
    801 
    802     /**
    803      * Check where to add " x/y" in each SMS segment, begin or end.
    804      * {@hide}
    805      */
    806     public static boolean shouldAppendPageNumberAsPrefix() {
    807         if (!isNoEmsSupportConfigListExisted()) {
    808             return false;
    809         }
    810 
    811         String simOperator;
    812         String gid;
    813         final long identity = Binder.clearCallingIdentity();
    814         try {
    815             simOperator = TelephonyManager.getDefault().getSimOperatorNumeric();
    816             gid = TelephonyManager.getDefault().getGroupIdLevel1();
    817         } finally {
    818             Binder.restoreCallingIdentity(identity);
    819         }
    820 
    821         for (NoEmsSupportConfig currentConfig : mNoEmsSupportConfigList) {
    822             if (simOperator.startsWith(currentConfig.mOperatorNumber) &&
    823                 (TextUtils.isEmpty(currentConfig.mGid1) ||
    824                 (!TextUtils.isEmpty(currentConfig.mGid1)
    825                 && currentConfig.mGid1.equalsIgnoreCase(gid)))) {
    826                 return currentConfig.mIsPrefix;
    827             }
    828         }
    829         return false;
    830     }
    831 
    832     private static class NoEmsSupportConfig {
    833         String mOperatorNumber;
    834         String mGid1;
    835         boolean mIsPrefix;
    836 
    837         public NoEmsSupportConfig(String[] config) {
    838             mOperatorNumber = config[0];
    839             mIsPrefix = "prefix".equals(config[1]);
    840             mGid1 = config.length > 2 ? config[2] : null;
    841         }
    842 
    843         @Override
    844         public String toString() {
    845             return "NoEmsSupportConfig { mOperatorNumber = " + mOperatorNumber
    846                     + ", mIsPrefix = " + mIsPrefix + ", mGid1 = " + mGid1 + " }";
    847         }
    848     }
    849 
    850     private static NoEmsSupportConfig[] mNoEmsSupportConfigList = null;
    851     private static boolean mIsNoEmsSupportConfigListLoaded = false;
    852 
    853     private static boolean isNoEmsSupportConfigListExisted() {
    854         if (!mIsNoEmsSupportConfigListLoaded) {
    855             Resources r = Resources.getSystem();
    856             if (r != null) {
    857                 String[] listArray = r.getStringArray(
    858                         com.android.internal.R.array.no_ems_support_sim_operators);
    859                 if ((listArray != null) && (listArray.length > 0)) {
    860                     mNoEmsSupportConfigList = new NoEmsSupportConfig[listArray.length];
    861                     for (int i=0; i<listArray.length; i++) {
    862                         mNoEmsSupportConfigList[i] = new NoEmsSupportConfig(listArray[i].split(";"));
    863                     }
    864                 }
    865                 mIsNoEmsSupportConfigListLoaded = true;
    866             }
    867         }
    868 
    869         if (mNoEmsSupportConfigList != null && mNoEmsSupportConfigList.length != 0) {
    870             return true;
    871         }
    872 
    873         return false;
    874     }
    875 }
    876