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bc5cd3acc8
So they're easier to override (just provide a new handler without specifying a priority).
48 lines
1.1 KiB
Text
48 lines
1.1 KiB
Text
@load ./main
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@load base/utils/conn-ids
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@load base/frameworks/file-analysis/main
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module FTP;
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export {
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## Default file handle provider for FTP.
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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_handle_string(c: connection): string
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{
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return cat(ANALYZER_FTP_DATA, " ", c$start_time, " ", id_string(c$id));
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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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if ( [c$id$resp_h, c$id$resp_p] !in ftp_data_expected ) return "";
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local info: FTP::Info = ftp_data_expected[c$id$resp_h, c$id$resp_p];
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if ( info$passive )
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# FTP client initiates data channel.
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if ( is_orig )
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# Don't care about FTP client data.
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return "";
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else
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# Do care about FTP server data.
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return get_handle_string(c);
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else
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# FTP server initiates dta channel.
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if ( is_orig )
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# Do care about FTP server data.
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return get_handle_string(c);
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else
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# Don't care about FTP client data.
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return "";
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}
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module GLOBAL;
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event get_file_handle(tag: AnalyzerTag, c: connection, is_orig: bool)
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&priority=5
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{
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if ( tag != ANALYZER_FTP_DATA ) return;
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set_file_handle(FTP::get_file_handle(c, is_orig));
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}
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