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From "Raffaele Gambelli (JIRA)" <mime4j-...@james.apache.org>
Subject [jira] [Commented] (MIME4J-265) Possible wrong calculation of header length
Date Mon, 08 Jan 2018 08:43:00 GMT

    [ https://issues.apache.org/jira/browse/MIME4J-265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16315879#comment-16315879

Raffaele Gambelli commented on MIME4J-265:

{quote}What is misleading is that maxHeaderLength is the total length of a header (and not
of a line).{quote}

The point IMHO is exactly that one, for what I know there is no overall header limit, the
only limit is on the single line, read for example [here|http://support.everycloudtech.com/support/solutions/articles/4000070246-rfc-2822-line-limits-applicable-for-mime-body-line-limits-]

> Possible wrong calculation of header length
> -------------------------------------------
>                 Key: MIME4J-265
>                 URL: https://issues.apache.org/jira/browse/MIME4J-265
>             Project: James Mime4j
>          Issue Type: Bug
>    Affects Versions: 0.7.2
>            Reporter: Raffaele Gambelli
>              Labels: headers
> I've implemented a sort of mail server and I have many threads listening for incoming
> I'm using mime4j to parse javamail Message.
> I had only one case of:
> Caused by: org.apache.james.mime4j.io.MaxHeaderLengthLimitException: Maximum header length
limit exceeded
>  at org.apache.james.mime4j.stream.DefaultFieldBuilder.append(DefaultFieldBuilder.java:63)
>         at org.apache.james.mime4j.stream.MimeEntity.readRawField(MimeEntity.java:212)
>         at org.apache.james.mime4j.stream.MimeEntity.nextField(MimeEntity.java:258)
> Looking at the code of DefaultFieldBuilder, it seems that the check over line length
is not done on the single line but on the overall header, I'm refering to this line:
> {code:java}
> if (this.maxlen > 0 && this.buf.length() + len >= this.maxlen) {
> {code}
> Why should you add "this.buf.length" ?
> I know that there is no limit on header length, but only in its lines.
> I can't attach my eml for privacy reasons but I can confirm that I have no too much long
> Thanks

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