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https://issues.apache.org/jira/browse/MIME4J-48?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12612799#action_12612799
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Oleg Kalnichevski commented on MIME4J-48:
-----------------------------------------
I guess I was wrong. Post no comment before first cup of coffee syndrome.
Please go ahead and commit the fix. Meanwhile I'll try to add more test
coverage for embedded base64 or qp encoded multipart messages to make sure we
have all cases covered
Oleg
> NPE when parsing embedded quoted printable encoded message
> ----------------------------------------------------------
>
> Key: MIME4J-48
> URL: https://issues.apache.org/jira/browse/MIME4J-48
> Project: Mime4j
> Issue Type: Bug
> Affects Versions: 0.4
> Reporter: Niklas Therning
> Fix For: 0.4
>
> Attachments: 36442979.msg
>
>
> When trying to parse a message which contains an embedded quoted printable
> message I received a NullPointerException:
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.james.mime4j.decoder.QuotedPrintableInputStream.populatePushbackQueue(QuotedPrintableInputStream.java:85)
> at
> org.apache.james.mime4j.decoder.QuotedPrintableInputStream.fillBuffer(QuotedPrintableInputStream.java:119)
> at
> org.apache.james.mime4j.decoder.QuotedPrintableInputStream.read(QuotedPrintableInputStream.java:57)
> at
> org.apache.james.mime4j.BufferingInputStreamAdaptor.doReadLine(BufferingInputStreamAdaptor.java:78)
> at
> org.apache.james.mime4j.BufferingInputStreamAdaptor.readLine(BufferingInputStreamAdaptor.java:68)
> at
> org.apache.james.mime4j.AbstractEntity.fillFieldBuffer(AbstractEntity.java:129)
> at
> org.apache.james.mime4j.AbstractEntity.parseField(AbstractEntity.java:162)
> at org.apache.james.mime4j.MimeEntity.advance(MimeEntity.java:97)
> at
> org.apache.james.mime4j.MimeTokenStream.next(MimeTokenStream.java:363)
> at Mime4jTest.main(Mime4jTest.java:83)
> I've figured out that it is the following code in MimeEntity which passes the
> null stream when creating the QuotedPrintableInputStream:
> private EntityStateMachine nextMessage() {
> String transferEncoding = body.getTransferEncoding();
> InputStream instream;
> if (MimeUtil.isBase64Encoding(transferEncoding)) {
> log.debug("base64 encoded message/rfc822 detected");
> instream = new Base64InputStream(mimeStream);
> } else if (MimeUtil.isQuotedPrintableEncoded(transferEncoding)) {
> log.debug("quoted-printable encoded message/rfc822 detected");
> instream = new QuotedPrintableInputStream(mimeStream);
>
> } else {
> instream = dataStream;
> }
> mimeStream seems to be null in this situation. I've tried to use dataStream
> instead of mimeStream. This seems to work better but when I do that I get an
> infinite loop when trying to parse an embedded multipart message which has
> =3D in its boundary. I'll attach such a message.
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