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Fix x509_extension event.

Browse source 
The event now really returns the extension. If openssl supports printing
it, it is converted into the openssl ascii output.

The output does not always look pretty because it can contain newlines.

New event syntax:
event x509_extension(c: connection, is_orig: bool, cert:X509, extension: X509_extension_info)

Example output for extension:
  [name=X509v3 Extended Key Usage,
    short_name=extendedKeyUsage,
    oid=2.5.29.37,
    critical=F,
    value=TLS Web Server Authentication, TLS Web Client Authentication]
  [name=X509v3 Certificate Policies,
   short_name=certificatePolicies,
   oid=2.5.29.32,
   critical=F,
   value=Policy: 1.3.6.1.4.1.6449.1.2.1.3.4^J  CPS: https://secure.comodo.com/CPS^J]
This commit is contained in:
Bernhard Amann 2014-01-27 10:22:06 -08:00
parent 392d1cb759
commit 6d73b8c57e
7 changed files with 90 additions and 19 deletions
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12
scripts/base/init-bare.bro
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@ -2432,6 +2432,18 @@ type X509: record {
not_valid_after: time; ##< Timestamp after when certificate is not valid.
};
## An X509 extension.
##
##
## .. bro:see:: x509_extension
type X509_extension_info: record {
name: string; ##< long name of extension. oid if name not known
short_name: string &optional; ##< short name of extension if known.
oid: string; ##< oid of extension
critical: bool; ##< true if extension is critical
value: string; ##< extension content parsed to string for known extensions. Raw data otherwise.
};
## HTTP session statistics.
##
## .. bro:see:: http_stats