From 36aeaec0b6a04edf7887ecc57393ce2962a6e39c Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@datawire.io>
Date: Wed, 26 Dec 2018 14:46:37 -0500
Subject: first pass at precertificate support

---
 bin-src/crtsh-pem2html.go | 12 ++++++++++++
 bin-src/util/oid.go       | 10 ++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 bin-src/util/oid.go

diff --git a/bin-src/crtsh-pem2html.go b/bin-src/crtsh-pem2html.go
index 109917c..c0b815c 100644
--- a/bin-src/crtsh-pem2html.go
+++ b/bin-src/crtsh-pem2html.go
@@ -28,10 +28,20 @@ func handleBool(ok bool, str string, a ...interface{}) {
 	}
 }
 
+func rfc6962type(certX509 *x509.Certificate) string {
+	for _, ext := range certX509.Extensions {
+		if ext.Id.Equal(util.OID_RFC6962_Poison) {
+			return "Precertificate"
+		}
+	}
+	return "Certificate"
+}
+
 var tmpl = template.Must(template.New("pem2html").
 	Funcs(template.FuncMap{
 		"red":           red,
 		"green":         green,
+		"rfc6962type":   rfc6962type,
 		"date":          util.Date2HTML,
 		"datetime":      util.DateTime2HTML,
 		"colorDatetime": util.DateTime2ColorHTML,
@@ -43,6 +53,7 @@ var tmpl = template.Must(template.New("pem2html").
     <th>Logged</th>
     <th>NotBefore</th>
     <th>NotAfter</th>
+    <th>Type</th>
     <th>Subject.CN</th>
     <th>Issuer.O</th>
   </tr>
@@ -51,6 +62,7 @@ var tmpl = template.Must(template.New("pem2html").
     <td style="background-color: {{$cert.Updated        | green}}"><a target="_blank" href="{{$cert.Url}}">{{$cert.Updated        | date}}</a></td>
     <td style="background-color: {{$cert.X509.NotBefore | green}}"><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.NotBefore | date}}</a></td>
     <td style="background-color: {{$cert.X509.NotAfter  | red  }}"><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.NotAfter  | date}}</a></td>
+    <td><a target="_blank" href="{{$cert.Url}}">{{$cert.X509 | rfc6962type}}</a></td>
     <td><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.Subject.CommonName}}</a></td>
     <td><a target="_blank" href="{{$cert.Url}}">{{$cert.X509.Issuer.Organization}}</a></td>
   </tr>
diff --git a/bin-src/util/oid.go b/bin-src/util/oid.go
new file mode 100644
index 0000000..b9fee4c
--- /dev/null
+++ b/bin-src/util/oid.go
@@ -0,0 +1,10 @@
+package util
+
+import (
+	"encoding/asn1"
+)
+
+var (
+	OID_RFC6962_SCTs   = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 2}
+	OID_RFC6962_Poison = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 3}
+)
-- 
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