ril: Fix unsol response array mapping

* Instead of messing around with indices, look up
   the requestNumber in the array.
 * This has a cost of O(N) instead of O(1) with the
   previous implementation, but we don't receive unsol
   response codes frequently enough to be worried about
   this.
 * This was needed because a few vendor reponses, aka
   RIL_UNSOL_SNDMGR_WB_AMR_REPORT at index 33 and
   RIL_UNSOL_SNDMGR_CLOCK_CTRL at index 34
   could not be addressed by their array indices anymore
   because we cannot calculate their index by the unsol
   response code we receive from the modem.

Change-Id: I27319e621c777fe19ae8908d7e0c4a46d6dd6d3b

ril/libril/ril.cpp

@@ -5656,23 +5656,36 @@ void RIL_onUnsolicitedResponse(int unsolResponse, const void *data,
 
     unsolResponseIndex = unsolResponse - RIL_UNSOL_RESPONSE_BASE;
     pRI = s_unsolResponses;
+    pRI_elements = (int32_t)NUM_ELEMS(s_unsolResponses);
 
     /* Hack to include Samsung responses */
     if (unsolResponse > RIL_VENDOR_COMMANDS_OFFSET + RIL_UNSOL_RESPONSE_BASE) {
-        unsolResponseIndex -= RIL_VENDOR_COMMANDS_OFFSET;
         pRI = s_unsolResponses_v;
+        pRI_elements = (int32_t)NUM_ELEMS(s_unsolResponses_v);
+
+        /*
+         * Some of the vendor response codes cannot be found by calculating their index anymore,
+         * because they have an even higher offset and are not ordered in the array.
+         * Example: RIL_UNSOL_SNDMGR_WB_AMR_REPORT = 20017, but it's at index 33 in the vendor
+         * response array.
+         * Thus, look through all the vendor URIs (Unsol Response Info) and pick the correct index.
+         * This has a cost of O(N).
+         */
+        int pRI_index;
+        for (pRI_index = 0; pRI_index < pRI_elements; pRI_index++) {
+            if (pRI[pRI_index].requestNumber == unsolResponse) {
+                unsolResponseIndex = pRI_index;
+            }
+        }
 
         RLOGD("SAMSUNG: unsolResponse=%d, unsolResponseIndex=%d", unsolResponse, unsolResponseIndex);
     }
 
-    pRI_elements = pRI == s_unsolResponses
-            ? (int32_t)NUM_ELEMS(s_unsolResponses) : (int32_t)NUM_ELEMS(s_unsolResponses_v);
-
     if (unsolResponseIndex >= 0 && unsolResponseIndex < pRI_elements) {
         pRI = &pRI[unsolResponseIndex];
     } else {
-        RLOGE("unsolResponseIndex out of bounds: %d, using %s response array", unsolResponseIndex,
-                pRI == s_unsolResponses ? "AOSP" : "Samsung");
+        RLOGE("could not map unsolResponse=%d to %s response array (index=%d)", unsolResponse,
+                pRI == s_unsolResponses ? "AOSP" : "Samsung", unsolResponseIndex);
     }
 
     if (pRI == NULL || pRI->responseFunction == NULL) {