public List getSignatures()

in jsign-core/src/main/java/net/jsign/msi/MSIFile.java [220:252]
28 lines of code
8 McCabe index (conditional complexity)

    public List<CMSSignedData> getSignatures() throws IOException {
        List<CMSSignedData> signatures = new ArrayList<>();

        try {
            DocumentEntry digitalSignature = (DocumentEntry) fsRead.getRoot().getEntry(DIGITAL_SIGNATURE_ENTRY_NAME);
            if (digitalSignature != null) {
                byte[] signatureBytes = IOUtils.toByteArray(new DocumentInputStream(digitalSignature));
                try {
                    CMSSignedData signedData = new CMSSignedData((CMSProcessable) null, ContentInfo.getInstance(new ASN1InputStream(signatureBytes).readObject()));
                    signatures.add(signedData);

                    // look for nested signatures
                    SignerInformation signerInformation = signedData.getSignerInfos().getSigners().iterator().next();
                    AttributeTable unsignedAttributes = signerInformation.getUnsignedAttributes();
                    if (unsignedAttributes != null) {
                        Attribute nestedSignatures = unsignedAttributes.get(AuthenticodeObjectIdentifiers.SPC_NESTED_SIGNATURE_OBJID);
                        if (nestedSignatures != null) {
                            for (ASN1Encodable nestedSignature : nestedSignatures.getAttrValues()) {
                                signatures.add(new CMSSignedData((CMSProcessable) null, ContentInfo.getInstance(nestedSignature)));
                            }
                        }
                    }
                } catch (UnsupportedOperationException e) {
                    // unsupported type, just skip
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        } catch (FileNotFoundException e) {
        }
        
        return signatures;
    }