dpow_notarytx: start preparations for VRSC sapling

usesigs? when we should create unsignedrawtx and when preimage for signing?

iguana/dpow/dpow_tx.c

@@ -267,43 +267,65 @@ int32_t dpow_voutstandard(struct supernet_info *myinfo,struct dpow_block *bp,uin
 bits256 dpow_notarytx(struct supernet_info *myinfo,char *signedtx,int32_t *numsigsp,int32_t isPoS,struct dpow_block *bp,int8_t bestk,uint64_t bestmask,int32_t usesigs,int32_t src_or_dest,uint8_t pubkeys[][33],int32_t numratified)
 {
     uint32_t k,m,numsigs,version,vout,crcval,sequenceid = 0xffffffff; bits256 zero; int32_t n,siglen,len; uint8_t serialized[32768],*sig; bits256 txid; struct dpow_entry *ep; struct dpow_coinentry *cp;
-    signedtx[0] = 0;
+    
+	struct iguana_info *coin = (src_or_dest != 0) ? bp->destcoin : bp->srccoin;
+	uint32_t zcash = (strcmp(coin->symbol, "VRSC") == 0 || strcmp(coin->symbol, "VRSCTEST") == 0);
+	printf("[Decker] dpow_notarytx: src.(%s) dst.(%s) src_or_dest.(%d) usesigs.(%d)\n", bp->srccoin->symbol, bp->destcoin->symbol, src_or_dest, usesigs);
+	
+	signedtx[0] = 0;
     *numsigsp = 0;
     memset(zero.bytes,0,sizeof(zero));
     len = numsigs = 0;
     version = 1;
-    len += iguana_rwnum(1,&serialized[len],sizeof(version),&version);
-    if ( isPoS != 0 )
+	
+	if (zcash) {
+		version = 4;
+		version = 1 << 31 | version; // overwintered
+	}
+	
+	len += iguana_rwnum(1,&serialized[len],sizeof(version),&version);
+	
+	if (zcash) {
+		uint32_t versiongroupid = 0x892f2085; // sapling
+		len += iguana_rwnum(1, &serialized[len], sizeof(versiongroupid), &versiongroupid);
+	}
+	
+	    
+	if ( isPoS != 0 )
         len += iguana_rwnum(1,&serialized[len],sizeof(bp->timestamp),&bp->timestamp);
     m = bp->minsigs;
     len += iguana_rwvarint32(1,&serialized[len],(uint32_t *)&m);
-    for (k=m=0; k<bp->numnotaries; k++)
+    // -- vins --
+	for (k=m=0; k<bp->numnotaries; k++)
     {
         siglen = 0;
         sig = 0;
         if ( ((1LL << k) & bestmask) != 0 )
         {
-            if ( pubkeys != 0 && numratified > 0 )
+            if ( pubkeys != 0 && numratified > 0 ) // state [1]
             {
+				printf("[Decker] dpow_notarytx: state [1]\n");
                 if ( src_or_dest != 0 )
                 {
                     txid = bp->notaries[k].ratifydestutxo;
                     vout = bp->notaries[k].ratifydestvout;
-                }
+                } 
                 else
                 {
                     txid = bp->notaries[k].ratifysrcutxo;
                     vout = bp->notaries[k].ratifysrcvout;
                 }
-                if ( bestk >= 0 )
+                
+				if ( bestk >= 0 ) // 
                 {
                     siglen = bp->notaries[k].ratifysiglens[src_or_dest];
                     sig = bp->notaries[k].ratifysigs[src_or_dest];
                 }
                 //char str[65]; printf("j.%d k.%d m.%d vin.(%s) v%d siglen.%d\n",j,k,m,bits256_str(str,txid),vout,siglen);
             }
-            else
+            else // state [2]
             {
+				printf("[Decker] dpow_notarytx: state [2]\n");
                 ep = &bp->notaries[k];
                 cp = (src_or_dest != 0) ? &bp->notaries[k].dest : &bp->notaries[k].src;
                 if ( bits256_nonz(cp->prev_hash) == 0 )
@@ -321,7 +343,8 @@ bits256 dpow_notarytx(struct supernet_info *myinfo,char *signedtx,int32_t *numsi
             }
             len += iguana_rwbignum(1,&serialized[len],sizeof(txid),txid.bytes);
             len += iguana_rwnum(1,&serialized[len],sizeof(vout),&vout);
-            if ( usesigs != 0 && bestk >= 0 )
+            
+			if ( usesigs != 0 && bestk >= 0 )
             {
                 len += iguana_rwvarint32(1,&serialized[len],(uint32_t *)&siglen);
                 if ( siglen > 0 && siglen <= sizeof(cp->sigs[bestk]) )
@@ -331,6 +354,7 @@ bits256 dpow_notarytx(struct supernet_info *myinfo,char *signedtx,int32_t *numsi
                     numsigs++;
                 } //else printf("%s -> %s src_or_dest.%d Missing sig from k.%d\n",bp->srccoin->symbol,bp->destcoin->symbol,src_or_dest,k);
             } else serialized[len++] = 0;
+
             len += iguana_rwnum(1,&serialized[len],sizeof(sequenceid),&sequenceid);
             //printf("height.%d mod.%d VINI.%d <- i.%d j.%d\n",height,height % numnotaries,m,i,j);
             m++;
@@ -338,6 +362,7 @@ bits256 dpow_notarytx(struct supernet_info *myinfo,char *signedtx,int32_t *numsi
                 break;
         }
     }
+	// -- vins --
     if ( (n= dpow_voutstandard(myinfo,bp,&serialized[len],m,src_or_dest,pubkeys,numratified)) < 0 )
     {
         printf("error dpow_voutstandard m.%d src_or_dest.%d\n",m,src_or_dest);
@@ -345,6 +370,8 @@ bits256 dpow_notarytx(struct supernet_info *myinfo,char *signedtx,int32_t *numsi
     }
     len += n;
     init_hexbytes_noT(signedtx,serialized,len);
+	printf("[Decker] dpow_notarytx: signedtx.(%s)\n", signedtx);
+
     //printf("notarytx.(%s) opretlen.%d\n",signedtx,opretlen);
     if ( usesigs == 0 && bestk >= 0 )
     {