1 files changed, 153 insertions, 0 deletions
diff --git a/telephony/java/com/android/internal/telephony/gsm/GsmSmsAddress.java b/telephony/java/com/android/internal/telephony/gsm/GsmSmsAddress.java
new file mode 100644
index 000000000000..2fbf7ed5648c
--- /dev/null
+++ b/telephony/java/com/android/internal/telephony/gsm/GsmSmsAddress.java
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2006 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 com.android.internal.telephony.gsm;
+
+import android.telephony.PhoneNumberUtils;
+import java.text.ParseException;
+import com.android.internal.telephony.GsmAlphabet;
+import com.android.internal.telephony.SmsAddress;
+
+public class GsmSmsAddress extends SmsAddress {
+
+    static final int OFFSET_ADDRESS_LENGTH = 0;
+
+    static final int OFFSET_TOA = 1;
+
+    static final int OFFSET_ADDRESS_VALUE = 2;
+
+    /**
+     * New GsmSmsAddress from TS 23.040 9.1.2.5 Address Field
+     *
+     * @param offset the offset of the Address-Length byte
+     * @param length the length in bytes rounded up, e.g. "2 +
+     *        (addressLength + 1) / 2"
+     * @throws ParseException
+     */
+
+    public GsmSmsAddress(byte[] data, int offset, int length) throws ParseException {
+        origBytes = new byte[length];
+        System.arraycopy(data, offset, origBytes, 0, length);
+
+        // addressLength is the count of semi-octets, not bytes
+        int addressLength = origBytes[OFFSET_ADDRESS_LENGTH] & 0xff;
+
+        int toa = origBytes[OFFSET_TOA] & 0xff;
+        ton = 0x7 & (toa >> 4);
+
+        // TOA must have its high bit set
+        if ((toa & 0x80) != 0x80) {
+            throw new ParseException("Invalid TOA - high bit must be set. toa = " + toa,
+                    offset + OFFSET_TOA);
+        }
+
+        if (isAlphanumeric()) {
+            // An alphanumeric address
+            int countSeptets = addressLength * 4 / 7;
+
+            address = GsmAlphabet.gsm7BitPackedToString(origBytes,
+                    OFFSET_ADDRESS_VALUE, countSeptets);
+        } else {
+            // TS 23.040 9.1.2.5 says
+            // that "the MS shall interpret reserved values as 'Unknown'
+            // but shall store them exactly as received"
+
+            byte lastByte = origBytes[length - 1];
+
+            if ((addressLength & 1) == 1) {
+                // Make sure the final unused BCD digit is 0xf
+                origBytes[length - 1] |= 0xf0;
+            }
+            address = PhoneNumberUtils.calledPartyBCDToString(origBytes,
+                    OFFSET_TOA, length - OFFSET_TOA);
+
+            // And restore origBytes
+            origBytes[length - 1] = lastByte;
+        }
+    }
+
+    @Override
+    public String getAddressString() {
+        return address;
+    }
+
+    /**
+     * Returns true if this is an alphanumeric address
+     */
+    @Override
+    public boolean isAlphanumeric() {
+        return ton == TON_ALPHANUMERIC;
+    }
+
+    @Override
+    public boolean isNetworkSpecific() {
+        return ton == TON_NETWORK;
+    }
+
+    /**
+     * Returns true of this is a valid CPHS voice message waiting indicator
+     * address
+     */
+    public boolean isCphsVoiceMessageIndicatorAddress() {
+        // CPHS-style MWI message
+        // See CPHS 4.7 B.4.2.1
+        //
+        // Basically:
+        //
+        // - Originating address should be 4 bytes long and alphanumeric
+        // - Decode will result with two chars:
+        // - Char 1
+        // 76543210
+        // ^ set/clear indicator (0 = clear)
+        // ^^^ type of indicator (000 = voice)
+        // ^^^^ must be equal to 0001
+        // - Char 2:
+        // 76543210
+        // ^ line number (0 = line 1)
+        // ^^^^^^^ set to 0
+        //
+        // Remember, since the alpha address is stored in 7-bit compact form,
+        // the "line number" is really the top bit of the first address value
+        // byte
+
+        return (origBytes[OFFSET_ADDRESS_LENGTH] & 0xff) == 4
+                && isAlphanumeric() && (origBytes[OFFSET_TOA] & 0x0f) == 0;
+    }
+
+    /**
+     * Returns true if this is a valid CPHS voice message waiting indicator
+     * address indicating a "set" of "indicator 1" of type "voice message
+     * waiting"
+     */
+    public boolean isCphsVoiceMessageSet() {
+        // 0x11 means "set" "voice message waiting" "indicator 1"
+        return isCphsVoiceMessageIndicatorAddress()
+                && (origBytes[OFFSET_ADDRESS_VALUE] & 0xff) == 0x11;
+
+    }
+
+    /**
+     * Returns true if this is a valid CPHS voice message waiting indicator
+     * address indicating a "clear" of "indicator 1" of type "voice message
+     * waiting"
+     */
+    public boolean isCphsVoiceMessageClear() {
+        // 0x10 means "clear" "voice message waiting" "indicator 1"
+        return isCphsVoiceMessageIndicatorAddress()
+                && (origBytes[OFFSET_ADDRESS_VALUE] & 0xff) == 0x10;
+
+    }
+}