// 
// Decompiled by Procyon v0.6.0
// 

package org.bouncycastle.asn1.cms;

import org.bouncycastle.asn1.ASN1TaggedObjectParser;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.ASN1SetParser;
import java.io.IOException;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1SequenceParser;

public class SignedDataParser
{
    private ASN1SequenceParser _seq;
    private ASN1Integer _version;
    private Object _nextObject;
    private boolean _certsCalled;
    private boolean _crlsCalled;
    
    public static SignedDataParser getInstance(final Object o) throws IOException {
        if (o instanceof ASN1Sequence) {
            return new SignedDataParser(((ASN1Sequence)o).parser());
        }
        if (o instanceof ASN1SequenceParser) {
            return new SignedDataParser((ASN1SequenceParser)o);
        }
        throw new IOException("unknown object encountered: " + o.getClass().getName());
    }
    
    private SignedDataParser(final ASN1SequenceParser seq) throws IOException {
        this._seq = seq;
        this._version = (ASN1Integer)seq.readObject();
    }
    
    public ASN1Integer getVersion() {
        return this._version;
    }
    
    public ASN1SetParser getDigestAlgorithms() throws IOException {
        final ASN1Encodable object = this._seq.readObject();
        if (object instanceof ASN1Set) {
            return ((ASN1Set)object).parser();
        }
        return (ASN1SetParser)object;
    }
    
    public ContentInfoParser getEncapContentInfo() throws IOException {
        return new ContentInfoParser((ASN1SequenceParser)this._seq.readObject());
    }
    
    public ASN1SetParser getCertificates() throws IOException {
        this._certsCalled = true;
        this._nextObject = this._seq.readObject();
        if (this._nextObject instanceof ASN1TaggedObjectParser) {
            final ASN1TaggedObjectParser asn1TaggedObjectParser = (ASN1TaggedObjectParser)this._nextObject;
            if (asn1TaggedObjectParser.hasContextTag(0)) {
                final ASN1SetParser asn1SetParser = (ASN1SetParser)asn1TaggedObjectParser.parseBaseUniversal(false, 17);
                this._nextObject = null;
                return asn1SetParser;
            }
        }
        return null;
    }
    
    public ASN1SetParser getCrls() throws IOException {
        if (!this._certsCalled) {
            throw new IOException("getCerts() has not been called.");
        }
        this._crlsCalled = true;
        if (this._nextObject == null) {
            this._nextObject = this._seq.readObject();
        }
        if (this._nextObject instanceof ASN1TaggedObjectParser) {
            final ASN1TaggedObjectParser asn1TaggedObjectParser = (ASN1TaggedObjectParser)this._nextObject;
            if (asn1TaggedObjectParser.hasContextTag(1)) {
                final ASN1SetParser asn1SetParser = (ASN1SetParser)asn1TaggedObjectParser.parseBaseUniversal(false, 17);
                this._nextObject = null;
                return asn1SetParser;
            }
        }
        return null;
    }
    
    public ASN1SetParser getSignerInfos() throws IOException {
        if (!this._certsCalled || !this._crlsCalled) {
            throw new IOException("getCerts() and/or getCrls() has not been called.");
        }
        if (this._nextObject == null) {
            this._nextObject = this._seq.readObject();
        }
        return (ASN1SetParser)this._nextObject;
    }
}