diff options
Diffstat (limited to 'libraries/spongycastle/mail/src/main/java/org/spongycastle/mail/smime/SMIMEGenerator.java')
| -rw-r--r-- | libraries/spongycastle/mail/src/main/java/org/spongycastle/mail/smime/SMIMEGenerator.java | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/libraries/spongycastle/mail/src/main/java/org/spongycastle/mail/smime/SMIMEGenerator.java b/libraries/spongycastle/mail/src/main/java/org/spongycastle/mail/smime/SMIMEGenerator.java deleted file mode 100644 index 168cc4a42..000000000 --- a/libraries/spongycastle/mail/src/main/java/org/spongycastle/mail/smime/SMIMEGenerator.java +++ /dev/null @@ -1,223 +0,0 @@ -package org.bouncycastle.mail.smime; - -import java.io.IOException; -import java.security.NoSuchAlgorithmException; -import java.security.Provider; -import java.util.Enumeration; -import java.util.HashMap; -import java.util.Map; - -import javax.crypto.KeyGenerator; -import javax.mail.Header; -import javax.mail.MessagingException; -import javax.mail.Multipart; -import javax.mail.Session; -import javax.mail.internet.MimeBodyPart; -import javax.mail.internet.MimeMessage; - -import org.bouncycastle.cms.CMSEnvelopedGenerator; -import org.bouncycastle.util.Strings; - -/** - * super class of the various generators. - */ -public class SMIMEGenerator -{ - private static Map BASE_CIPHER_NAMES = new HashMap(); - - static - { - BASE_CIPHER_NAMES.put(CMSEnvelopedGenerator.DES_EDE3_CBC, "DESEDE"); - BASE_CIPHER_NAMES.put(CMSEnvelopedGenerator.AES128_CBC, "AES"); - BASE_CIPHER_NAMES.put(CMSEnvelopedGenerator.AES192_CBC, "AES"); - BASE_CIPHER_NAMES.put(CMSEnvelopedGenerator.AES256_CBC, "AES"); - } - - protected boolean useBase64 = true; - protected String encoding = "base64"; // default sets base64 - - /** - * base constructor - */ - protected SMIMEGenerator() - { - } - - /** - * set the content-transfer-encoding for the CMS block (enveloped data, signature, etc...) in the message. - * - * @param encoding the encoding to use, default "base64", use "binary" for a binary encoding. - */ - public void setContentTransferEncoding( - String encoding) - { - this.encoding = encoding; - this.useBase64 = Strings.toLowerCase(encoding).equals("base64"); - } - - /** - * Make sure we have a valid content body part - setting the headers - * with defaults if neccessary. - */ - protected MimeBodyPart makeContentBodyPart( - MimeBodyPart content) - throws SMIMEException - { - // - // add the headers to the body part - if they are missing, in - // the event they have already been set the content settings override - // any defaults that might be set. - // - try - { - MimeMessage msg = new MimeMessage((Session)null); - - Enumeration e = content.getAllHeaders(); - - msg.setDataHandler(content.getDataHandler()); - - while (e.hasMoreElements()) - { - Header hdr =(Header)e.nextElement(); - - msg.setHeader(hdr.getName(), hdr.getValue()); - } - - msg.saveChanges(); - - // - // we do this to make sure at least the default headers are - // set in the body part. - // - e = msg.getAllHeaders(); - - while (e.hasMoreElements()) - { - Header hdr =(Header)e.nextElement(); - - if (Strings.toLowerCase(hdr.getName()).startsWith("content-")) - { - content.setHeader(hdr.getName(), hdr.getValue()); - } - } - } - catch (MessagingException e) - { - throw new SMIMEException("exception saving message state.", e); - } - - return content; - } - - /** - * extract an appropriate body part from the passed in MimeMessage - */ - protected MimeBodyPart makeContentBodyPart( - MimeMessage message) - throws SMIMEException - { - MimeBodyPart content = new MimeBodyPart(); - - // - // add the headers to the body part. - // - try - { - message.removeHeader("Message-Id"); - message.removeHeader("Mime-Version"); - - // JavaMail has a habit of reparsing some content types, if the bodypart is - // a multipart it might be signed, we rebuild the body part using the raw input stream for the message. - try - { - if (message.getContent() instanceof Multipart) - { - content.setContent(message.getRawInputStream(), message.getContentType()); - - extractHeaders(content, message); - - return content; - } - } - catch (MessagingException e) - { - // fall back to usual method below - } - - content.setContent(message.getContent(), message.getContentType()); - - content.setDataHandler(message.getDataHandler()); - - extractHeaders(content, message); - } - catch (MessagingException e) - { - throw new SMIMEException("exception saving message state.", e); - } - catch (IOException e) - { - throw new SMIMEException("exception getting message content.", e); - } - - return content; - } - - private void extractHeaders(MimeBodyPart content, MimeMessage message) - throws MessagingException - { - Enumeration e = message.getAllHeaders(); - - while (e.hasMoreElements()) - { - Header hdr =(Header)e.nextElement(); - - content.addHeader(hdr.getName(), hdr.getValue()); - } - } - - protected KeyGenerator createSymmetricKeyGenerator( - String encryptionOID, - Provider provider) - throws NoSuchAlgorithmException - { - try - { - return createKeyGenerator(encryptionOID, provider); - } - catch (NoSuchAlgorithmException e) - { - try - { - String algName = (String)BASE_CIPHER_NAMES.get(encryptionOID); - if (algName != null) - { - return createKeyGenerator(algName, provider); - } - } - catch (NoSuchAlgorithmException ex) - { - // ignore - } - if (provider != null) - { - return createSymmetricKeyGenerator(encryptionOID, null); - } - throw e; - } - } - - private KeyGenerator createKeyGenerator( - String algName, - Provider provider) - throws NoSuchAlgorithmException - { - if (provider != null) - { - return KeyGenerator.getInstance(algName, provider); - } - else - { - return KeyGenerator.getInstance(algName); - } - } -} |