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now passing btest
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2 changed files with 4 additions and 27 deletions
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@ -4,7 +4,7 @@
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@load base/protocols/ssl
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@load base/files/x509
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@load base/utils/directions-and-hosts
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@load ./extract-certs-pem.bro
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module SSL;
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@ -36,40 +36,16 @@ export {
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## Control if host certificates offered by the defined hosts
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## will be written to the PEM certificates file.
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## Choices are: LOCAL_HOSTS, REMOTE_HOSTS, ALL_HOSTS, NO_HOSTS.
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const extract_certs_pem = ALL_HOSTS &redef;
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redef extract_certs_pem = ALL_HOSTS;
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}
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# This is an internally maintained variable to prevent relogging of
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# certificates that have already been seen. It is indexed on an sha1 sum of
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# the certificate.
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global extracted_certs: set[string] = set() &read_expire=1hr &redef;
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event ssl_established(c: connection) &priority=5
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{
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if ( ! c$ssl?$cert_chain || |c$ssl$cert_chain| == 0 ||
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! c$ssl$cert_chain[0]?$x509 )
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return;
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if ( ! addr_matches_host(c$id$resp_h, extract_certs_pem) )
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return;
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local hash = c$ssl$cert_chain[0]$sha1;
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local cert = c$ssl$cert_chain[0]$x509$handle;
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c$ssl$server_cert_sha1 = hash;
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if ( hash in extracted_certs )
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# If we already extracted this cert, don't do it again.
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return;
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add extracted_certs[hash];
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local filename = Site::is_local_addr(c$id$resp_h) ? "certs-local.pem" : "certs-remote.pem";
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local outfile = open_for_append(filename);
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enable_raw_output(outfile);
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print outfile, x509_get_certificate_string(cert, T);
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close(outfile);
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c$ssl$server_cert_sha1 = c$ssl$cert_chain[0]$sha1;
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}
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event ssl_client_hello(c: connection, version: count, possible_ts: time, client_random: string, session_id: string, ciphers: index_vec) &priority=5
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@ -101,6 +101,7 @@
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@load protocols/ssl/validate-ocsp.bro
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@load protocols/ssl/validate-sct.bro
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@load protocols/ssl/weak-keys.bro
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@load protocols/ssl/ssl-verbose.bro
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@load tuning/__load__.bro
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@load tuning/defaults/__load__.bro
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@load tuning/defaults/extracted_file_limits.bro
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