Merge "Parse params needed for SipDelegate routing" am: 9a13fb1dbf

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1616689

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3d5ceb7b6d830e684d3b159e6f50bc8b41b70728

core/api/system-current.txt

@@ -11819,10 +11819,12 @@ package android.telephony.ims {
   public final class SipMessage implements android.os.Parcelable {
     ctor public SipMessage(@NonNull String, @NonNull String, @NonNull byte[]);
     method public int describeContents();
+    method @Nullable public String getCallIdParameter();
     method @NonNull public byte[] getContent();
     method @NonNull public byte[] getEncodedMessage();
     method @NonNull public String getHeaderSection();
     method @NonNull public String getStartLine();
+    method @Nullable public String getViaBranchParameter();
     method public void writeToParcel(@NonNull android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.telephony.ims.SipMessage> CREATOR;
   }

telephony/common/com/android/internal/telephony/SipMessageParsingUtils.java

@@ -65,6 +65,11 @@ public class SipMessageParsingUtils {
     // compact form of the via header key
     private static final String VIA_SIP_HEADER_KEY_COMPACT = "v";
 
+    // call-id header key
+    private static final String CALL_ID_SIP_HEADER_KEY = "call-id";
+    // compact form of the call-id header key
+    private static final String CALL_ID_SIP_HEADER_KEY_COMPACT = "i";
+
     /**
      * @return true if the SIP message start line is considered a request (based on known request
      * methods).
@@ -124,6 +129,17 @@ public class SipMessageParsingUtils {
         return null;
     }
 
+    /**
+     * Return the call-id header key's associated value.
+     * @param headerString The string containing the headers of the SIP message.
+     */
+    public static String getCallId(String headerString) {
+        // search for the call-Id header, there should only be one in the header.
+        List<Pair<String, String>> headers = parseHeaders(headerString, true,
+                CALL_ID_SIP_HEADER_KEY, CALL_ID_SIP_HEADER_KEY_COMPACT);
+        return !headers.isEmpty() ? headers.get(0).second : null;
+    }
+
     private static String[] splitStartLineAndVerify(String startLine) {
         String[] splitLine = startLine.split(" ");
         if (isStartLineMalformed(splitLine)) return null;

telephony/java/android/telephony/ims/SipMessage.java

@@ -19,6 +19,7 @@ package android.telephony.ims;
 import static java.nio.charset.StandardCharsets.UTF_8;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.os.Build;
 import android.os.Parcel;
@@ -46,6 +47,8 @@ public final class SipMessage implements Parcelable {
     private final String mStartLine;
     private final String mHeaderSection;
     private final byte[] mContent;
+    private final String mViaBranchParam;
+    private final String mCallIdParam;
 
     /**
      * Represents a partially encoded SIP message.
@@ -63,6 +66,9 @@ public final class SipMessage implements Parcelable {
         mStartLine = startLine;
         mHeaderSection = headerSection;
         mContent = content;
+
+        mViaBranchParam = SipMessageParsingUtils.getTransactionId(mHeaderSection);
+        mCallIdParam = SipMessageParsingUtils.getCallId(mHeaderSection);
     }
 
     /**
@@ -73,6 +79,8 @@ public final class SipMessage implements Parcelable {
         mHeaderSection = source.readString();
         mContent = new byte[source.readInt()];
         source.readByteArray(mContent);
+        mViaBranchParam = source.readString();
+        mCallIdParam = source.readString();
     }
 
     /**
@@ -97,6 +105,25 @@ public final class SipMessage implements Parcelable {
         return mContent;
     }
 
+    /**
+     * @return the branch parameter enclosed in the Via header key's value. See RFC 3261 section
+     * 20.42 for more information on the Via header. If {@code null}, then there was either no
+     * Via parameter found in this SIP message's headers or no branch parameter found in the
+     * Via header.
+     */
+    public @Nullable String getViaBranchParameter() {
+        return mViaBranchParam;
+    }
+
+    /**
+     * @return the value associated with the call-id header of this SIP message. See RFC 3261
+     * section 20.8 for more information on the call-id header. If {@code null}, then there was no
+     * call-id header found in this SIP message's headers.
+     */
+    public @Nullable String getCallIdParameter() {
+        return mCallIdParam;
+    }
+
     @Override
     public int describeContents() {
         return 0;
@@ -108,6 +135,8 @@ public final class SipMessage implements Parcelable {
         dest.writeString(mHeaderSection);
         dest.writeInt(mContent.length);
         dest.writeByteArray(mContent);
+        dest.writeString(mViaBranchParam);
+        dest.writeString(mCallIdParam);
     }
 
     public static final @NonNull Creator<SipMessage> CREATOR = new Creator<SipMessage>() {

telephony/java/android/telephony/ims/aidl/SipDelegateAidlWrapper.java

@@ -31,8 +31,6 @@ import android.telephony.ims.stub.SipDelegate;
 import android.text.TextUtils;
 import android.util.Log;
 
-import com.android.internal.telephony.SipMessageParsingUtils;
-
 import java.util.ArrayList;
 import java.util.Set;
 import java.util.concurrent.Executor;
@@ -188,7 +186,7 @@ public class SipDelegateAidlWrapper implements DelegateStateCallback, DelegateMe
     }
 
     private void notifyLocalMessageFailedToBeReceived(SipMessage m, int reason) {
-        String transactionId = SipMessageParsingUtils.getTransactionId(m.getHeaderSection());
+        String transactionId = m.getViaBranchParameter();
         if (TextUtils.isEmpty(transactionId)) {
             Log.w(LOG_TAG, "failure to parse SipMessage.");
             throw new IllegalArgumentException("Malformed SipMessage, can not determine "

telephony/java/android/telephony/ims/aidl/SipDelegateConnectionAidlWrapper.java

@@ -32,8 +32,6 @@ import android.text.TextUtils;
 import android.util.ArraySet;
 import android.util.Log;
 
-import com.android.internal.telephony.SipMessageParsingUtils;
-
 import java.util.List;
 import java.util.NoSuchElementException;
 import java.util.concurrent.Executor;
@@ -268,7 +266,7 @@ public class SipDelegateConnectionAidlWrapper implements SipDelegateConnection,
     }
 
     private void notifyLocalMessageFailedToSend(SipMessage m, int reason) {
-        String transactionId = SipMessageParsingUtils.getTransactionId(m.getHeaderSection());
+        String transactionId = m.getViaBranchParameter();
         if (TextUtils.isEmpty(transactionId)) {
             Log.w(LOG_TAG, "sendMessage detected a malformed SipMessage and can not get a "
                     + "transaction ID.");