[PATCHv2] logs.cgi/ids.dat: Rework linking to external rule documentation.

[Stefan Schantl <stefan.schantl@ipfire.org>]

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Check if the sid of a rule belongs to sourcefire and link to the
changed URL for gathering more details. If the sid of the rule belongs
to emergingthreads now link to the emergingthreads documentation.

Fixes #11806.

Signed-off-by: Stefan Schantl <stefan.schantl(a)ipfire.org>
---
 html/cgi-bin/logs.cgi/ids.dat | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/html/cgi-bin/logs.cgi/ids.dat b/html/cgi-bin/logs.cgi/ids.dat
index 98176d690..030fd4b64 100644
--- a/html/cgi-bin/logs.cgi/ids.dat
+++ b/html/cgi-bin/logs.cgi/ids.dat
@@ -335,10 +335,18 @@ print <<END
 <td valign='top'>
 END
 	;
-	if ($sid ne "n/a") {
-		print "<a href='https://www.snort.org/rule_docs/$sid' ";
+	if ($sid eq "n/a") {
+		print $sid;
+	} elsif ($sid < 1000000) {
+		# Link to sourcefire if the the rule sid is less than 1000000.
+		print "<a href='https://www.snort.org/rule_docs/1-$sid' ";
+		print "target='_blank'>$sid</a></td>\n";
+	} elsif ($sid >= 2000000 and $sid < 3000000) {
+		# Link to emergingthreats if the rule sid is between 2000000 and 3000000.
+		print "<a href='http://doc.emergingthreats.net/$sid' ";
 		print "target='_blank'>$sid</a></td>\n";
 	} else {
+		# No external link for user defined rules
 		print $sid;
 	}
 print <<END
-- 
2.17.1