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https://bro-tracker.atlassian.net/browse/BIT-1338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=19932#comment-19932
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Jon Siwek commented on BIT-1338:
--------------------------------
{quote}
The connection object is not available directly from fa_file.
{quote}
The "conns" field of fa_file should hold all the connection records over which
the file was transferred, if any. Does that help simplify your analysis? E.g.:
{code}
event file_mime_type(f: fa_file, mime_type: string)
{
if ( ! f?$conns ) return;
for ( cid in f$conns )
{
local c: connection = f$conns[cid];
# Do stuff with 'c' ...
}
}
{code}
{quote}
One suggestion I'd make is 2.4 release notes do not adequately convey this
event change
(https://www.bro.org/sphinx-git/install/release-notes.html#changed-functionality),
at least to me. A note about changes in when information is available in event
progression would have helped me.
{quote}
Definitely, I'll add that note. Thanks.
> http response mime types uninitialized in file_over_new_connection event
> ------------------------------------------------------------------------
>
> Key: BIT-1338
> URL: https://bro-tracker.atlassian.net/browse/BIT-1338
> Project: Bro Issue Tracker
> Issue Type: Problem
> Components: Bro
> Affects Versions: git/master
> Reporter: Paul Pearce
> Labels: mime
> Fix For: 2.4
>
>
> http resp_mime_types (accessed via: connection$http$resp_mime_types) are no
> longer initialized during the file_over_new_connection event. This is new
> behavior between Bro v2.3 and git/master.
> The following snippet shows the new behavior on one of the included bro test
> traces.
> {code:bash}
> $ bro_v23 -e 'event file_over_new_connection(f: fa_file, c:connection,
> is_orig:bool){ print c$http?$resp_mime_types; }' -r
> bro/testing/btest/Traces/http/get.trace
> T
> $ bro_git -e 'event file_over_new_connection(f: fa_file, c:connection,
> is_orig:bool){ print c$http?$resp_mime_types; }' -r
> bro/testing/btest/Traces/http/get.trace
> F
> {code}
> It's worth pointing out that ultimately the resp_mime_types field does get
> set for subsequent events.
> {code:bash}
> $ bro_v23 -e 'event http_message_done (c: connection, is_orig: bool, stat:
> http_message_stat){ if (!is_orig) print c$http?$resp_mime_types; }' -r
> bro/testing/btest/Traces/http/get.trace
> T
> $ bro_git -e 'event http_message_done (c: connection, is_orig: bool, stat:
> http_message_stat){ if (!is_orig) print c$http?$resp_mime_types; }' -r
> bro/testing/btest/Traces/http/get.trace
> T
> {code}
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