/**
* Verify the email is signed by the given certificate.
*
* @param signedData
* @param mailMsg
* @return
* @throws CMSException
* @throws OperatorCreationException
* @throws CertificateException
*/
@SuppressWarnings({"rawtypes"})
protected boolean isValid(CMSSignedData signedData, MailMessage mailMsg)
throws OperatorCreationException, CMSException, CertificateException {
boolean verify = false;
SignerInformationStore signerStore = signedData.getSignerInfos();
Iterator<SignerInformation> it = signerStore.getSigners().iterator();
while (it.hasNext()) {
SignerInformation signer = it.next();
org.bouncycastle.util.Store store = signedData.getCertificates();
@SuppressWarnings("unchecked")
Collection certCollection = store.getMatches(signer.getSID());
Iterator certIt = certCollection.iterator();
X509CertificateHolder certHolder = (X509CertificateHolder) certIt.next();
X509Certificate certificate =
new JcaX509CertificateConverter().setProvider(PROVIDER_NAME).getCertificate(certHolder);
verify =
signer.verify(
new JcaSimpleSignerInfoVerifierBuilder()
.setProvider(PROVIDER_NAME)
.build(certificate));
mailMsg.setHasSignature(true);
mailMsg.setSignaturePassed(verify);
mailMsg.setNameOfPrincipal(certificate.getSubjectDN().getName());
}
return verify;
}
/**
* Process the MimeMessage for simple mail with/without attachment.
*
* @param mime
* @param mailMsg
* @return
* @throws IOException
* @throws MessagingException
* @throws ParseException
*/
private String processSimpleMail(MimeMessage mime, MailMessage mailMsg)
throws IOException, MessagingException, ParseException {
mailMsg.setHasSignature(false);
mailMsg.setSignaturePassed(false);
this.setMailBasicInfoForMailMsg(mime, mailMsg);
String txtBody = null;
String htmlBody = null;
if (mime.isMimeType("text/plain")) {
txtBody = mime.getContent().toString();
} else if (mime.isMimeType("text/html")) {
htmlBody = mime.getContent().toString();
} else if (mime.getContent() instanceof Multipart) {
// Get the content of the messsage, it's an Multipart object like a package including all the
// email text and attachments.
Multipart multi = (Multipart) mime.getContent();
// First, verify the quantity and size of attachments.
boolean isValidMailMsg = this.isValidMailMsg(multi);
if (isValidMailMsg) {
// process each part in order.
for (int i = 0, n = multi.getCount(); i < n; i++) {
// unpack, get each part of Multipart, part 0 may email text and part 1 may attachment. Or
// it is another embedded Multipart.
Part part1 = multi.getBodyPart(i);
if (part1.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part1.getDisposition())) {
txtBody = part1.getContent().toString();
} else if (part1.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part1.getDisposition())) {
htmlBody = part1.getContent().toString();
} else if (part1.isMimeType("multipart/alternative")) {
// generally if the content type multipart/alternative, it is email text.
if (part1.getContent() instanceof Multipart) {
Multipart multi1 = (Multipart) part1.getContent();
for (int k = 0; k < multi1.getCount(); k++) {
Part part2 = multi1.getBodyPart(k);
if (part2.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part2.getDisposition())) {
txtBody = part2.getContent().toString();
} else if (part2.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part2.getDisposition())) {
htmlBody = part2.getContent().toString();
}
}
}
} else if (part1.isMimeType("multipart/related")) {
if (part1.getContent() instanceof Multipart) {
Multipart multi1 = (Multipart) part1.getContent();
for (int m = 0; m < multi1.getCount(); m++) {
Part part2 = multi1.getBodyPart(m);
if (part2.isMimeType("multipart/alternative")) {
if (part2.getContent() instanceof Multipart) {
Multipart multi2 = (Multipart) part2.getContent();
for (int p = 0; p < multi2.getCount(); p++) {
Part part3 = multi2.getBodyPart(p);
if (part3.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part3.getDisposition())) {
txtBody = part3.getContent().toString();
} else if (part3.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part3.getDisposition())) {
htmlBody = part3.getContent().toString();
}
}
}
} else if (part2.isMimeType("text/plain")
&& !Part.ATTACHMENT.equalsIgnoreCase(part2.getDisposition())) {
txtBody = part2.getContent().toString();
} else if (part2.isMimeType("text/html")
&& !Part.ATTACHMENT.equalsIgnoreCase(part2.getDisposition())) {
htmlBody = part2.getContent().toString();
} else {
// This is an embedded picture, set it as an attachment.
mailMsg.setHasAttachments(true);
}
}
}
} else {
String disposition = part1.getDisposition();
if (disposition != null && Part.ATTACHMENT.equalsIgnoreCase(disposition)) {
mailMsg.setHasAttachments(true);
}
}
}
}
}
if (!isNull(txtBody)) {
mailMsg.setBody(txtBody);
} else {
mailMsg.setBody(htmlBody);
}
return JSONObject.fromObject(mailMsg).toString();
}