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cdf6b7864e
- Recorrected the module name to Files.
- Added Files::analyzer_name to get a more readable name for a
file analyzer.
- Improved and just overall better handled multipart mime
transfers in HTTP and SMTP. HTTP now has orig_fuids and resp_fuids
log fields since multiple "files" can be transferred with
multipart mime in a single request/response pair. SMTP has
an fuids field which has file unique IDs for all parts
transferred. FTP and IRC have a log field named fuid added
because only a single file can be transferred per irc and ftp
log line.
34 lines
No EOL
807 B
Text
34 lines
No EOL
807 B
Text
@load ./main
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@load ./entities
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@load base/utils/conn-ids
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@load base/frameworks/files
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module SMTP;
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export {
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redef record Info += {
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## An ordered vector of file unique IDs seen attached to
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## the message.
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fuids: vector of string &log &default=string_vec();
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};
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## Default file handle provider for SMTP.
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global get_file_handle: function(c: connection, is_orig: bool): string;
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}
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function get_file_handle(c: connection, is_orig: bool): string
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{
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return cat(Analyzer::ANALYZER_SMTP, c$start_time, c$smtp$trans_depth,
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c$smtp_state$mime_depth);
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}
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event bro_init() &priority=5
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{
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Files::register_protocol(Analyzer::ANALYZER_SMTP, SMTP::get_file_handle);
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}
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event file_over_new_connection(f: fa_file, c: connection) &priority=5
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{
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if ( c?$smtp )
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c$smtp$fuids[|c$smtp$fuids|] = f$id;
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} |