mirror of
https://github.com/zeek/zeek.git
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116 lines
2.6 KiB
Text
116 lines
2.6 KiB
Text
@load base/files/extract
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@load base/files/hash
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redef FileExtract::prefix = "./";
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global test_file_analysis_source: string = "" &redef;
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global test_file_analyzers: set[Files::Tag];
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global test_get_file_name: function(f: fa_file): string =
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function(f: fa_file): string { return ""; } &redef;
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global test_print_file_data_events: bool = F &redef;
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global file_count: count = 0;
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global file_map: table[string] of count;
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function canonical_file_name(f: fa_file): string
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{
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return fmt("file #%d", file_map[f$id]);
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}
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event file_chunk(f: fa_file, data: string, off: count)
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{
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if ( test_print_file_data_events )
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print "file_chunk", canonical_file_name(f), |data|, off, data;
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}
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event file_stream(f: fa_file, data: string)
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{
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if ( test_print_file_data_events )
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print "file_stream", canonical_file_name(f), |data|, data;
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}
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event file_new(f: fa_file)
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{
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print "FILE_NEW";
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file_map[f$id] = file_count;
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++file_count;
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print canonical_file_name(f), f$seen_bytes, f$missing_bytes;
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if ( test_file_analysis_source == "" ||
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f$source == test_file_analysis_source )
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{
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for ( tag in test_file_analyzers )
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Files::add_analyzer(f, tag);
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local filename: string = test_get_file_name(f);
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if ( filename != "" )
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Files::add_analyzer(f, Files::ANALYZER_EXTRACT,
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[$extract_filename=filename]);
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Files::add_analyzer(f, Files::ANALYZER_DATA_EVENT,
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[$chunk_event=file_chunk,
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$stream_event=file_stream]);
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}
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}
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event file_over_new_connection(f: fa_file, c: connection, is_orig: bool)
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{
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print "FILE_OVER_NEW_CONNECTION";
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}
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event file_timeout(f: fa_file)
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{
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print "FILE_TIMEOUT";
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}
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event file_gap(f: fa_file, offset: count, len: count)
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{
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print "FILE_GAP";
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}
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event file_state_remove(f: fa_file)
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{
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print "FILE_STATE_REMOVE";
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print canonical_file_name(f), f$seen_bytes, f$missing_bytes;
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if ( f?$conns )
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for ( cid in f$conns )
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print cid;
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if ( f?$bof_buffer )
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{
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print "FILE_BOF_BUFFER";
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print f$bof_buffer[0:11];
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}
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if ( f$info?$mime_type )
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{
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print "MIME_TYPE";
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print f$info$mime_type;
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}
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if ( f?$total_bytes )
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print "total bytes: " + fmt("%s", f$total_bytes);
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if ( f?$source )
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print "source: " + f$source;
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if ( ! f?$info ) return;
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if ( f$info?$md5 )
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print fmt("MD5: %s", f$info$md5);
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if ( f$info?$sha1 )
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print fmt("SHA1: %s", f$info$sha1);
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if ( f$info?$sha256 )
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print fmt("SHA256: %s", f$info$sha256);
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}
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event zeek_init()
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{
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add test_file_analyzers[Files::ANALYZER_MD5];
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add test_file_analyzers[Files::ANALYZER_SHA1];
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add test_file_analyzers[Files::ANALYZER_SHA256];
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}
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