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      1 /*
      2  * Copyright (C) 2015 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 com.android.voicemail.impl;
     18 
     19 /**
     20  * Wrapper class to hold relevant OMTP constants as defined in the OMTP spec.
     21  *
     22  * <p>In essence this is a programmatic representation of the relevant portions of OMTP spec.
     23  */
     24 public class OmtpConstants {
     25   public static final String SMS_FIELD_SEPARATOR = ";";
     26   public static final String SMS_KEY_VALUE_SEPARATOR = "=";
     27   public static final String SMS_PREFIX_SEPARATOR = ":";
     28 
     29   public static final String SYNC_SMS_PREFIX = "SYNC";
     30   public static final String STATUS_SMS_PREFIX = "STATUS";
     31 
     32   // This is the format designated by the OMTP spec.
     33   public static final String DATE_TIME_FORMAT = "dd/MM/yyyy HH:mm Z";
     34 
     35   /** OMTP protocol versions. */
     36   public static final String PROTOCOL_VERSION1_1 = "11";
     37 
     38   public static final String PROTOCOL_VERSION1_2 = "12";
     39   public static final String PROTOCOL_VERSION1_3 = "13";
     40 
     41   ///////////////////////// Client/Mobile originated SMS //////////////////////
     42 
     43   /** Mobile Originated requests */
     44   public static final String ACTIVATE_REQUEST = "Activate";
     45 
     46   public static final String DEACTIVATE_REQUEST = "Deactivate";
     47   public static final String STATUS_REQUEST = "Status";
     48 
     49   /** fields that can be present in a Mobile Originated OMTP SMS */
     50   public static final String CLIENT_TYPE = "ct";
     51 
     52   public static final String APPLICATION_PORT = "pt";
     53   public static final String PROTOCOL_VERSION = "pv";
     54 
     55   //////////////////////////////// Sync SMS fields ////////////////////////////
     56 
     57   /**
     58    * Sync SMS fields.
     59    *
     60    * <p>Each string constant is the field's key in the SMS body which is used by the parser to
     61    * identify the field's value, if present, in the SMS body.
     62    */
     63 
     64   /** The event that triggered this SYNC SMS. See {@link OmtpConstants#SYNC_TRIGGER_EVENT_VALUES} */
     65   public static final String SYNC_TRIGGER_EVENT = "ev";
     66 
     67   public static final String MESSAGE_UID = "id";
     68   public static final String MESSAGE_LENGTH = "l";
     69   public static final String NUM_MESSAGE_COUNT = "c";
     70   /** See {@link OmtpConstants#CONTENT_TYPE_VALUES} */
     71   public static final String CONTENT_TYPE = "t";
     72 
     73   public static final String SENDER = "s";
     74   public static final String TIME = "dt";
     75 
     76   /**
     77    * SYNC message trigger events.
     78    *
     79    * <p>These are the possible values of {@link OmtpConstants#SYNC_TRIGGER_EVENT}.
     80    */
     81   public static final String NEW_MESSAGE = "NM";
     82 
     83   public static final String MAILBOX_UPDATE = "MBU";
     84   public static final String GREETINGS_UPDATE = "GU";
     85 
     86   public static final String[] SYNC_TRIGGER_EVENT_VALUES = {
     87     NEW_MESSAGE, MAILBOX_UPDATE, GREETINGS_UPDATE
     88   };
     89 
     90   /**
     91    * Content types supported by OMTP VVM.
     92    *
     93    * <p>These are the possible values of {@link OmtpConstants#CONTENT_TYPE}.
     94    */
     95   public static final String VOICE = "v";
     96 
     97   public static final String VIDEO = "o";
     98   public static final String FAX = "f";
     99   /** Voice message deposited by an external application */
    100   public static final String INFOTAINMENT = "i";
    101   /** Empty Call Capture - i.e. voicemail with no voice message. */
    102   public static final String ECC = "e";
    103 
    104   public static final String[] CONTENT_TYPE_VALUES = {VOICE, VIDEO, FAX, INFOTAINMENT, ECC};
    105 
    106   ////////////////////////////// Status SMS fields ////////////////////////////
    107 
    108   /**
    109    * Status SMS fields.
    110    *
    111    * <p>Each string constant is the field's key in the SMS body which is used by the parser to
    112    * identify the field's value, if present, in the SMS body.
    113    */
    114   /** See {@link OmtpConstants#PROVISIONING_STATUS_VALUES} */
    115   public static final String PROVISIONING_STATUS = "st";
    116   /** See {@link OmtpConstants#RETURN_CODE_VALUES} */
    117   public static final String RETURN_CODE = "rc";
    118   /** URL to send users to for activation VVM */
    119   public static final String SUBSCRIPTION_URL = "rs";
    120   /** IMAP4/SMTP server IP address or fully qualified domain name */
    121   public static final String SERVER_ADDRESS = "srv";
    122   /** Phone number to access voicemails through Telephony User Interface */
    123   public static final String TUI_ACCESS_NUMBER = "tui";
    124 
    125   public static final String TUI_PASSWORD_LENGTH = "pw_len";
    126   /** Number to send client origination SMS */
    127   public static final String CLIENT_SMS_DESTINATION_NUMBER = "dn";
    128 
    129   public static final String IMAP_PORT = "ipt";
    130   public static final String IMAP_USER_NAME = "u";
    131   public static final String IMAP_PASSWORD = "pw";
    132   public static final String SMTP_PORT = "spt";
    133   public static final String SMTP_USER_NAME = "smtp_u";
    134   public static final String SMTP_PASSWORD = "smtp_pw";
    135 
    136   /**
    137    * User provisioning status values.
    138    *
    139    * <p>Referred by {@link OmtpConstants#PROVISIONING_STATUS}.
    140    */
    141   public static final String SUBSCRIBER_NEW = "N";
    142 
    143   public static final String SUBSCRIBER_READY = "R";
    144   public static final String SUBSCRIBER_PROVISIONED = "P";
    145   public static final String SUBSCRIBER_UNKNOWN = "U";
    146   public static final String SUBSCRIBER_BLOCKED = "B";
    147 
    148   public static final String[] PROVISIONING_STATUS_VALUES = {
    149     SUBSCRIBER_NEW, SUBSCRIBER_READY, SUBSCRIBER_PROVISIONED, SUBSCRIBER_UNKNOWN, SUBSCRIBER_BLOCKED
    150   };
    151 
    152   /**
    153    * The return code included in a status message.
    154    *
    155    * <p>These are the possible values of {@link OmtpConstants#RETURN_CODE}.
    156    */
    157   public static final String SUCCESS = "0";
    158 
    159   public static final String SYSTEM_ERROR = "1";
    160   public static final String SUBSCRIBER_ERROR = "2";
    161   public static final String MAILBOX_UNKNOWN = "3";
    162   public static final String VVM_NOT_ACTIVATED = "4";
    163   public static final String VVM_NOT_PROVISIONED = "5";
    164   public static final String VVM_CLIENT_UKNOWN = "6";
    165   public static final String VVM_MAILBOX_NOT_INITIALIZED = "7";
    166 
    167   public static final String[] RETURN_CODE_VALUES = {
    168     SUCCESS,
    169     SYSTEM_ERROR,
    170     SUBSCRIBER_ERROR,
    171     MAILBOX_UNKNOWN,
    172     VVM_NOT_ACTIVATED,
    173     VVM_NOT_PROVISIONED,
    174     VVM_CLIENT_UKNOWN,
    175     VVM_MAILBOX_NOT_INITIALIZED,
    176   };
    177 
    178   /** IMAP command extensions */
    179 
    180   /**
    181    * OMTP spec v1.3 2.3.1 Change password request syntax
    182    *
    183    * <p>This changes the PIN to access the Telephone User Interface, the traditional voicemail
    184    * system.
    185    */
    186   public static final String IMAP_CHANGE_TUI_PWD_FORMAT = "XCHANGE_TUI_PWD PWD=%1$s OLD_PWD=%2$s";
    187 
    188   /**
    189    * OMTP spec v1.3 2.4.1 Change languate request syntax
    190    *
    191    * <p>This changes the language in the Telephone User Interface.
    192    */
    193   public static final String IMAP_CHANGE_VM_LANG_FORMAT = "XCHANGE_VM_LANG LANG=%1$s";
    194 
    195   /**
    196    * OMTP spec v1.3 2.5.1 Close NUT Request syntax
    197    *
    198    * <p>This disables the new user tutorial, the message played to new users calling in the
    199    * Telephone User Interface.
    200    */
    201   public static final String IMAP_CLOSE_NUT = "XCLOSE_NUT";
    202 
    203   /** Possible NO responses for CHANGE_TUI_PWD */
    204   public static final String RESPONSE_CHANGE_PIN_TOO_SHORT = "password too short";
    205 
    206   public static final String RESPONSE_CHANGE_PIN_TOO_LONG = "password too long";
    207   public static final String RESPONSE_CHANGE_PIN_TOO_WEAK = "password too weak";
    208   public static final String RESPONSE_CHANGE_PIN_MISMATCH = "old password mismatch";
    209   public static final String RESPONSE_CHANGE_PIN_INVALID_CHARACTER =
    210       "password contains invalid characters";
    211 
    212   public static String getClientType() {
    213     String manufacturer =
    214         truncate(
    215             android.os.Build.MANUFACTURER
    216                 .replace('=', '_')
    217                 .replace(';', '_')
    218                 .replace('.', '_')
    219                 .replace(' ', '_'),
    220             12);
    221 
    222     String version =
    223         truncate(
    224             android.os.Build.VERSION
    225                 .RELEASE
    226                 .replace('=', '_')
    227                 .replace(';', '_')
    228                 .replace('.', '_')
    229                 .replace(' ', '_'),
    230             8);
    231 
    232     String model =
    233         truncate(
    234             android.os.Build.MODEL
    235                 .replace('=', '_')
    236                 .replace(';', '_')
    237                 .replace('.', '_')
    238                 .replace(' ', '_'),
    239             28 - manufacturer.length() - version.length());
    240 
    241     return String.format("%s.%s.%s", manufacturer, model, version);
    242   }
    243 
    244   private static final String truncate(String string, int length) {
    245     return string.substring(0, Math.min(length, string.length()));
    246   }
    247 }
    248