zeek/scripts/policy/protocols/http/software.bro
2012-01-08 02:22:52 -05:00

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##! Software identification and extraction for HTTP traffic.
@load base/frameworks/software
module HTTP;
export {
redef enum Software::Type += {
## Identifier for web servers in the software framework.
SERVER,
## Identifier for app servers in the software framework.
APPSERVER,
## Identifier for web browsers in the software framework.
BROWSER,
};
## The pattern of HTTP User-Agents which you would like to ignore.
const ignored_user_agents = /NO_DEFAULT/ &redef;
}
event http_header(c: connection, is_orig: bool, name: string, value: string) &priority=2
{
if ( is_orig )
{
if ( name == "USER-AGENT" && ignored_user_agents !in value )
Software::found(c$id, Software::parse(value, c$id$orig_h, BROWSER));
}
else
{
if ( name == "SERVER" )
Software::found(c$id, Software::parse(value, c$id$resp_h, SERVER));
else if ( name == "X-POWERED-BY" )
Software::found(c$id, Software::parse(value, c$id$resp_h, APPSERVER));
else if ( name == "MICROSOFTSHAREPOINTTEAMSERVICES" )
{
value = cat("SharePoint/", value);
Software::found(c$id, Software::parse(value, c$id$resp_h, APPSERVER));
}
}
}