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https://github.com/transatoshi-mw/grin-web-wallet.git
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This commit is contained in:
transatoshi
418
scripts/slate_input.js
Executable file
418
scripts/slate_input.js
Executable file
@@ -0,0 +1,418 @@
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// Use strict
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"use strict";
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// Classes
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// Slate input class
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class SlateInput {
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// Public
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// Constructor
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constructor(serializedSlateInputOrFeatures, slateOrCommit) {
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// Reset
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this.reset();
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// Check if a binary serialized slate input is provided
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if(serializedSlateInputOrFeatures instanceof BitReader === true) {
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// Get serialized slate input
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var serializedSlateInput = serializedSlateInputOrFeatures;
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// Get slate
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var slate = slateOrCommit;
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// Unserialize the serialized slate input
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this.unserialize(serializedSlateInput, slate);
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}
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// Otherwise check if a serialized slate input is provided
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else if(Object.isObject(serializedSlateInputOrFeatures) === true) {
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// Get serialized slate input
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var serializedSlateInput = serializedSlateInputOrFeatures;
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// Get slate
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var slate = slateOrCommit;
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// Unserialize the serialized slate input
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this.unserialize(serializedSlateInput, slate);
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}
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// Otherwise check if arguments are provided
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else if(typeof serializedSlateInputOrFeatures === "number") {
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// Get features
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var features = serializedSlateInputOrFeatures;
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// Get Commit
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var commit = slateOrCommit;
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// Set features to provided features
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this.features = features;
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// Set commit to provided commit
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this.commit = commit;
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}
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// Otherwise
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else {
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// Throw error
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throw "Unsupported input.";
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}
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}
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// Serialize
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serialize(slateOrVersion, bitWriter) {
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// Get slate version
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var slateVersion = (slateOrVersion instanceof Slate === true) ? slateOrVersion.getVersion() : slateOrVersion;
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// Check slate's version
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switch((slateVersion instanceof BigNumber === true) ? slateVersion.toFixed() : slateVersion) {
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// Version two and three
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case Slate.VERSION_TWO.toFixed():
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case Slate.VERSION_THREE.toFixed():
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// Return serialized slate input
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return {
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// Features
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"features": SlateInput.featuresToText(this.getFeatures()),
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// Commit
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"commit": Common.toHexString(this.getCommit())
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};
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// Version four
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case Slate.VERSION_FOUR.toFixed():
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// Check if serializing slate input as binary
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if(typeof bitWriter !== "undefined") {
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// Try
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try {
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// Write features
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bitWriter.setBytes([this.getFeatures()]);
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// Write commit
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bitWriter.setBytes(this.getCommit());
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}
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// Catch errors
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catch(error) {
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// Throw error
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throw "Unsupported input.";
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}
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}
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// Otherwise
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else {
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// Create serialized slate input
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var serializedSlateInput = {
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// Commit
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"c": Common.toHexString(this.getCommit())
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};
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// Check if not plain
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if(this.isPlain() === false) {
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// Set serialized slate input's features
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serializedSlateInput["f"] = this.getFeatures();
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}
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// Return serialized slate input
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return serializedSlateInput;
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}
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// Break
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break;
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// Default
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default:
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// Throw error
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throw "Unsupported slate version.";
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}
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}
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// Get transaction
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getTransaction() {
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// Return transaction
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return {
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// Features
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"features": SlateInput.featuresToText(this.getFeatures()),
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// Commit
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"commit": Common.toHexString(this.getCommit())
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};
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}
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// Get features
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getFeatures() {
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// Return features
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return this.features;
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}
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// Get commit
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getCommit() {
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// Return commit
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return this.commit;
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}
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// Is plain
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isPlain() {
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// Return if features is plain
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return this.getFeatures() === SlateInput.PLAIN_FEATURES;
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}
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// Is coinbase
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isCoinbase() {
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// Return if features is coinbase
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return this.getFeatures() === SlateInput.COINBASE_FEATURES;
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}
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// Get hash
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getHash() {
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// Return hash
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return new Hash([
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// Features
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new Uint8Array([this.getFeatures()]),
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// Commit
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this.getCommit()
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]);
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}
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// Is equal to
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isEqualTo(slateInput) {
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// Check if features aren't equal
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if(this.getFeatures() !== slateInput.getFeatures())
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// Return false
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return false;
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// Check if commits aren't equal
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if(Common.arraysAreEqual(this.getCommit(), slateInput.getCommit()) === false)
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// Return false
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return false;
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// Return true
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return true;
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}
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// Private
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// Reset
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reset() {
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// Set features to plain features
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this.features = SlateInput.PLAIN_FEATURES;
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}
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// Unserialize
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unserialize(serializedSlateInput, slate) {
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// Check slate's version
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switch((slate.getVersion() instanceof BigNumber === true) ? slate.getVersion().toFixed() : slate.getVersion()) {
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// Version two and three
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case Slate.VERSION_TWO.toFixed():
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case Slate.VERSION_THREE.toFixed():
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// Check if serialized slate input's features isn't supported
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if("features" in serializedSlateInput === false || SlateInput.textToFeatures(serializedSlateInput["features"]) === SlateInput.UNSUPPORTED_FEATURES) {
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// Throw error
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throw "Unsupported input.";
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}
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// Set features to serialized slate input's features
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this.features = SlateInput.textToFeatures(serializedSlateInput["features"]);
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// Check if serialized slate input's commit isn't supported
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if("commit" in serializedSlateInput === false || Common.isHexString(serializedSlateInput["commit"]) === false || Common.hexStringLength(serializedSlateInput["commit"]) !== Crypto.COMMIT_LENGTH || Secp256k1Zkp.isValidCommit(Common.fromHexString(serializedSlateInput["commit"])) !== true) {
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// Throw error
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throw "Unsupported input.";
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}
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// Set commit to serialized slate input's commit
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this.commit = Common.fromHexString(serializedSlateInput["commit"]);
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// Break
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break;
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// Version four
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case Slate.VERSION_FOUR.toFixed():
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// Check if serialized slate input is binary
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if(serializedSlateInput instanceof BitReader === true) {
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// Get bit reader
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var bitReader = serializedSlateInput;
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// Try
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try {
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// Set features to serialized slate input's features
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this.features = bitReader.getBytes(1)[0];
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// Check if serialized slate input's features isn't supported
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if(this.getFeatures() !== SlateInput.PLAIN_FEATURES && this.getFeatures() !== SlateInput.COINBASE_FEATURES) {
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// Throw error
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throw "Unsupported input.";
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}
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// Set commit to serialized slate input's commit
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this.commit = bitReader.getBytes(Crypto.COMMIT_LENGTH);
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// Check if serialized slate input's commit isn't supported
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if(Secp256k1Zkp.isValidCommit(this.getCommit()) !== true) {
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// Throw error
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throw "Unsupported input.";
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}
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}
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// Catch errors
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catch(error) {
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// Throw error
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throw "Unsupported input.";
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}
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}
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// Otherwise
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else {
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// Check if serialized slate input's features isn't supported
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if("f" in serializedSlateInput === true && ((Common.isNumberString(serializedSlateInput["f"]) === false && serializedSlateInput["f"] instanceof BigNumber === false) || ((new BigNumber(serializedSlateInput["f"])).isEqualTo(SlateInput.PLAIN_FEATURES) === false && (new BigNumber(serializedSlateInput["f"])).isEqualTo(SlateInput.COINBASE_FEATURES) === false))) {
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// Throw error
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throw "Unsupported input.";
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}
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// Set features to serialized slate input's features
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this.features = ("f" in serializedSlateInput === true) ? (new BigNumber(serializedSlateInput["f"])).toNumber() : SlateInput.PLAIN_FEATURES;
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// Check if serialized slate input's commit isn't supported
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if("c" in serializedSlateInput === false || Common.isHexString(serializedSlateInput["c"]) === false || Common.hexStringLength(serializedSlateInput["c"]) !== Crypto.COMMIT_LENGTH || Secp256k1Zkp.isValidCommit(Common.fromHexString(serializedSlateInput["c"])) !== true) {
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// Throw error
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throw "Unsupported input.";
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}
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// Set commit to serialized slate input's commit
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this.commit = Common.fromHexString(serializedSlateInput["c"]);
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}
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// Break
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break;
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// Default
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default:
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// Throw error
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throw "Unsupported input.";
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}
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}
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// Features to text
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static featuresToText(features) {
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// Check features
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switch(features) {
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// Plain features
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case SlateInput.PLAIN_FEATURES:
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// Return plain text
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return "Plain";
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// Coinbase features
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case SlateInput.COINBASE_FEATURES:
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// Return coinbase text
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return "Coinbase";
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// Default
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default:
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// Return unsupported features
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return SlateInput.UNSUPPORTED_FEATURES;
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}
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}
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// Text to feature
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static textToFeatures(text) {
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// Check text
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switch(text) {
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// Plain text
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case "Plain":
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// Return plain features
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return SlateInput.PLAIN_FEATURES;
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// Coinbase text
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case "Coinbase":
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// Return coinbase features
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return SlateInput.COINBASE_FEATURES;
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// Default
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default:
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// Return unsupported features
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return SlateInput.UNSUPPORTED_FEATURES;
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}
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}
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// Plain features
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static get PLAIN_FEATURES() {
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// Return plain features
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return 0;
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}
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// Coinbase features
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static get COINBASE_FEATURES() {
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// Return coinbase features
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return SlateInput.PLAIN_FEATURES + 1;
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}
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// Unsupported features
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static get UNSUPPORTED_FEATURES() {
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// Return unsupported features
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return SlateInput.COINBASE_FEATURES + 1;
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}
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}
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// Main function
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// Set global object's slate input
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globalThis["SlateInput"] = SlateInput;
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