Examples with ScriptChunk org.bitcoinj.script.ScriptChunk used on opensource projects

Example 1 with ScriptChunk

use of org.bitcoinj.script.ScriptChunk in project catena-java by alinush.

the class CatenaUtils method getCatenaTxData.

/**
 * Returns the OP_RETURN data in the specified Catena TX.
 *
 * @param tx
 * @return
 */
public static byte[] getCatenaTxData(Transaction tx) {
    Script pubKey = tx.getOutput(1).getScriptPubKey();
    checkState(pubKey.isOpReturn());
    ScriptChunk dataChunk = pubKey.getChunks().get(1);
    checkState(dataChunk.isPushData());
    return dataChunk.data;
}

Example 2 with ScriptChunk

use of org.bitcoinj.script.ScriptChunk in project balzac by balzac-lang.

the class AbstractScriptBuilderWithVar method addVariableChunk.

private void addVariableChunk(String name) {
    byte[] data = (FREEVAR_PREFIX + name).getBytes();
    checkState(data.length < 256, "data too long: " + data.length);
    ScriptChunk chunk = new ScriptChunk(OP_PUSHDATA1, data);
    super.addChunk(chunk);
}

Example 3 with ScriptChunk

use of org.bitcoinj.script.ScriptChunk in project balzac by balzac-lang.

the class AbstractScriptBuilderWithVar method signaturePlaceholder.

@SuppressWarnings("unchecked")
public T signaturePlaceholder(String keyID, SigHash hashType, boolean anyoneCanPay) {
    checkNotNull(keyID, "'keyID' cannot be null");
    checkNotNull(hashType, "'hashType' cannot be null");
    SignatureUtil sig = new SignatureUtil(keyID, hashType, anyoneCanPay);
    String mapKey = sig.getUniqueKey();
    byte[] data = (SIGNATURE_PREFIX + mapKey).getBytes();
    checkState(data.length < 256, "data too long: " + data.length);
    ScriptChunk chunk = new ScriptChunk(OP_PUSHDATA1, data);
    super.addChunk(chunk);
    this.signatures.put(mapKey, sig);
    return (T) this;
}

Example 4 with ScriptChunk

use of org.bitcoinj.script.ScriptChunk in project balzac by balzac-lang.

the class AbstractScriptBuilderWithVar method append.

/**
 * Append the given script builder to this one.
 * If it contains some free variables or signatures placeholder, they are merged ensuring consistency.
 * @param <U> the concrete type of the given builder
 * @param append the script builder to append
 * @return this builder
 */
@SuppressWarnings("unchecked")
public <U extends AbstractScriptBuilderWithVar<U>> T append(AbstractScriptBuilderWithVar<U> append) {
    for (ScriptChunk ch : append.getChunks()) {
        if (isVariable(ch)) {
            // merge free variables
            String name = getVariableName(ch);
            // check they are consistent
            if (hasVariable(name)) {
                checkState(getType(name).equals(append.getType(name)), "Inconsitent state: variable '%s' is bound to type '%s' (this) and type '%s' (append)", name, this.getType(name), append.getType(name));
                if (isBound(name) && append.isBound(name)) {
                    checkState(getValue(name).equals(append.getValue(name)), "Inconsitent state: variable '%s' is bound to value '%s' (this) and value '%s' (append)", name, this.getValue(name), append.getValue(name));
                }
            }
            this.addVariable(name, append.getType(name));
            if (!isBound(name) && append.isBound(name)) {
                this.bindVariable(name, append.getValue(name));
            }
        } else if (isSignature(ch)) {
            // merge signatures
            String mapKey = getMapKey(ch);
            checkNotNull(append.signatures.containsKey(mapKey));
            if (this.signatures.containsKey(mapKey)) {
                // check they are consistent
                checkState(this.signatures.get(mapKey).equals(append.signatures.get(mapKey)), "Inconsitent state: sig placeholder '%s' is bound to '%s' (this) and '%s' (append)", mapKey, this.signatures.get(mapKey), append.signatures.get(mapKey));
            } else {
                this.signatures.put(mapKey, append.signatures.get(mapKey));
            }
            this.addChunk(ch);
        } else {
            this.addChunk(ch);
        }
    }
    return (T) this;
}

Example 5 with ScriptChunk

use of org.bitcoinj.script.ScriptChunk in project balzac by balzac-lang.

the class AbstractScriptBuilderWithVar method substituteAllBinding.

/*
     * Return a Script, binding the variables.
     * This builder is assumed to be ready
     */
private Script substituteAllBinding() {
    ScriptBuilder sb = new ScriptBuilder();
    for (ScriptChunk chunk : getChunks()) {
        if (isVariable(chunk)) {
            String name = getVariableName(chunk);
            Object obj = getValue(name);
            Class<?> expectedClass = getType(name);
            if (expectedClass.isInstance(obj)) {
                for (ScriptChunk ch : BitcoinUtils.toScript(obj).getChunks()) {
                    sb.addChunk(ch);
                }
            } else
                throw new IllegalArgumentException("expected class " + expectedClass.getName() + ", got " + obj.getClass().getName());
        } else {
            sb.addChunk(chunk);
        }
    }
    return sb.build();
}