Many small improvements

src/eckey.js

@@ -42,7 +42,6 @@ var ECKey = function (input) {
       this.compressed = true;
     } else {
       // hex string?
-      // Prepend zero byte to prevent interpretation as negative integer
       this.priv = BigInteger.fromByteArrayUnsigned(conv.hexToBytes(input));
     }
   }

src/script.js

@@ -121,19 +121,17 @@ Script.prototype.getOutType = function () {
     if (this.chunks[this.chunks.length-1] == Opcode.map.OP_CHECKMULTISIG &&
         this.chunks[this.chunks.length-2] <= 3) {
         // Transfer to M-OF-N
-        return 'Multisig';
-    } else if (this.chunks.length == 5 &&
+        return 'P2SH';
+    }
+    else if (this.chunks.length == 5 &&
         this.chunks[0] == Opcode.map.OP_DUP &&
         this.chunks[1] == Opcode.map.OP_HASH160 &&
         this.chunks[3] == Opcode.map.OP_EQUALVERIFY &&
         this.chunks[4] == Opcode.map.OP_CHECKSIG) {
         // Transfer to Bitcoin address
-        return 'Address';
-    } else if (this.chunks.length == 2 &&
-        this.chunks[1] == Opcode.map.OP_CHECKSIG) {
-        // Transfer to IP address
         return 'Pubkey';
-    } else {
+    }
+    else {
         return 'Strange';
     }   
 }
@@ -145,10 +143,9 @@ Script.prototype.getOutType = function () {
 Script.prototype.toScriptHash = function () {
     var outType = this.getOutType();
 
-    return outType == 'Address'       ? this.chunks[2]
-         : outType == 'Pubkey'        ? util.sha256ripe160(this.chunks[0])
-         : outType == 'Multisig'      ? util.sha256ripe160(this.buffer)
-         :                              util.sha256ripe160(this.buffer)
+    return outType == 'Pubkey'       ? this.chunks[2]
+         : outType == 'P2SH'         ? util.sha256ripe160(this.buffer)
+         :                             util.sha256ripe160(this.buffer)
 };
 
 Script.prototype.toAddress = function() {
@@ -368,7 +365,7 @@ Script.createMultiSigInputScript = function(signatures, script)
     if (signatures.length < k) return false; //Not enough sigs
     var inScript = new Script();
     inScript.writeOp(Opcode.map.OP_0);
-    signatures.map(inScript.writeBytes.bind(inScript));
+    signatures.map(function(sig) { inScript.writeBytes(sig) });
     inScript.writeBytes(script.buffer);
     return inScript;
 }

src/transaction.js

@@ -9,30 +9,33 @@ var ECDSA = require('./ecdsa');
 var Address = require('./address');
 
 var Transaction = function (doc) {
-  this.version = 1;
-  this.lock_time = 0;
-  this.ins = [];
-  this.outs = [];
-  this.timestamp = null;
-  this.block = null;
-
-  if (doc) {
-    if (doc.hash) this.hash = doc.hash;
-    if (doc.version) this.version = doc.version;
-    if (doc.lock_time) this.lock_time = doc.lock_time;
-    if (doc.ins && doc.ins.length) {
-      for (var i = 0; i < doc.ins.length; i++) {
-        this.addInput(new TransactionIn(doc.ins[i]));
-      }
-    }
-    if (doc.outs && doc.outs.length) {
-      for (var i = 0; i < doc.outs.length; i++) {
-        this.addOutput(new TransactionOut(doc.outs[i]));
-      }
+    this.version = 1;
+    this.lock_time = 0;
+    this.ins = [];
+    this.outs = [];
+    this.timestamp = null;
+    this.block = null;
+    
+    if (doc) {
+        if (typeof doc == "string" || util.isArray(doc)) {
+            doc = Transaction.deserialize(doc)
+        }
+        if (doc.hash) this.hash = doc.hash;
+        if (doc.version) this.version = doc.version;
+        if (doc.lock_time) this.lock_time = doc.lock_time;
+        if (doc.ins && doc.ins.length) {
+            for (var i = 0; i < doc.ins.length; i++) {
+                this.addInput(new TransactionIn(doc.ins[i]));
+            }
+        }
+        if (doc.outs && doc.outs.length) {
+            for (var i = 0; i < doc.outs.length; i++) {
+                this.addOutput(new TransactionOut(doc.outs[i]));
+            }
+        }
+        if (doc.timestamp) this.timestamp = doc.timestamp;
+        if (doc.block) this.block = doc.block;
     }
-    if (doc.timestamp) this.timestamp = doc.timestamp;
-    if (doc.block) this.block = doc.block;
-  }
 };
 
 /**
@@ -412,6 +415,9 @@ Transaction.prototype.calcImpact = function (wallet) {
  */
 
 Transaction.deserialize = function(buffer) {
+    if (typeof buffer == "string") {
+        buffer = conv.hexToBytes(buffer)
+    }
     var pos = 0;
     var readAsInt = function(bytes) {
         if (bytes == 0) return 0;
@@ -516,6 +522,10 @@ Transaction.prototype.p2shsign = function(index, script, key, type) {
 
 Transaction.prototype.multisign = Transaction.prototype.p2shsign;
 
+Transaction.prototype.applyMultisigs = function(index, script, sigs, type) {
+    this.ins[index].script = Script.createMultiSigInputScript(sigs, script);
+}
+
 Transaction.prototype.validateSig = function(index, script, sig, pub) {
     script = new Script(script);
     var hash = this.hashTransactionForSignature(script,index,1);