From 7c1444b7143710066f5173119a529c3b5e101300 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Wed, 20 Apr 2022 15:03:04 +0200
Subject: Move pki to pass

---
 gen_pki | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100755 gen_pki

(limited to 'gen_pki')

diff --git a/gen_pki b/gen_pki
new file mode 100755
index 0000000..57da699
--- /dev/null
+++ b/gen_pki
@@ -0,0 +1,118 @@
+#!/usr/bin/env sh
+
+set -ex
+
+cd $(dirname $0)
+
+CLUSTER="$1"
+if [ -z "$CLUSTER" ] || [ ! -d "cluster/$CLUSTER" ]; then
+	echo "Usage: $0 <cluster name>"
+	echo "The cluster name must be the name of a subdirectory of cluster/"
+	exit 1
+fi
+
+PREFIX="deuxfleurs/cluster/$CLUSTER"
+
+YEAR=$(date +%Y)
+for APP in consul nomad; do
+	# 1. Create certificate authority
+	if ! pass $PREFIX/$APP-ca.key >/dev/null; then
+		echo "Generating $APP CA keys..."
+		openssl genrsa 4096 | pass insert -m $PREFIX/$APP-ca.key
+
+		openssl req -x509 -new -nodes \
+			-key <(pass $PREFIX/$APP-ca.key) -sha256 \
+			-days 3650 -subj "/C=FR/O=Deuxfleurs/CN=$APP" \
+			| pass insert -m -f $PREFIX/$APP-ca.crt
+	fi
+
+	CERT="${APP}${YEAR}"
+
+	# 2. Create and sign certificates for inter-node communication
+	if ! pass $PREFIX/$CERT.crt >/dev/null; then
+		echo "Generating $CERT agent keys..."
+		if ! pass $PREFIX/$CERT.key >/dev/null; then
+			openssl genrsa 4096 | pass insert -m $PREFIX/$CERT.key
+		fi
+		openssl req -new -sha256 -key <(pass $PREFIX/$CERT.key) \
+			-subj "/C=FR/O=Deuxfleurs/CN=$APP" \
+			-out /tmp/tmp-$CLUSTER-$CERT.csr
+		openssl req -in /tmp/tmp-$CLUSTER-$CERT.csr  -noout -text
+		openssl x509 -req -in /tmp/tmp-$CLUSTER-$CERT.csr \
+			-extensions v3_req \
+			-extfile <(cat <<EOF
+[req]
+distinguished_name = req_distinguished_name
+req_extensions = v3_req
+prompt = no
+
+[req_distinguished_name]
+C = FR
+O = Deuxfleurs
+CN = $APP
+
+[v3_req]
+keyUsage = keyEncipherment, keyCertSign, dataEncipherment
+extendedKeyUsage = serverAuth, clientAuth
+subjectAltName = @alt_names
+
+[alt_names]
+DNS.1 = server.$CLUSTER.$APP
+DNS.2 = client.$CLUSTER.$APP
+DNS.3 = localhost
+DNS.4 = 127.0.0.1
+EOF
+	) \
+			-CA <(pass $PREFIX/$APP-ca.crt) \
+			-CAkey <(pass $PREFIX/$APP-ca.key) -CAcreateserial \
+			-CAserial /tmp/tmp-$CLUSTER-$CERT.srl \
+			-days 700 \
+			| pass insert -m $PREFIX/$CERT.crt
+		rm /tmp/tmp-$CLUSTER-$CERT.{csr,srl}
+	fi
+
+	# 3. Create client-only certificate used for the CLI
+	if ! pass $PREFIX/$CERT-client.crt >/dev/null; then
+		echo "Generating $CERT client keys..."
+		if ! pass $PREFIX/$CERT-client.key >/dev/null; then
+			openssl genrsa 4096 | pass insert -m $PREFIX/$CERT-client.key
+		fi
+		openssl req -new -sha256 -key <(pass $PREFIX/$CERT-client.key) \
+			-subj "/C=FR/O=Deuxfleurs/CN=$APP-client" \
+			-out /tmp/tmp-$CLUSTER-$CERT-client.csr
+		openssl req -in /tmp/tmp-$CLUSTER-$CERT-client.csr -noout -text
+		openssl x509 -req -in /tmp/tmp-$CLUSTER-$CERT-client.csr \
+			-extensions v3_req \
+			-extfile <(cat <<EOF
+[req]
+distinguished_name = req_distinguished_name
+req_extensions = v3_req
+prompt = no
+
+[req_distinguished_name]
+C = FR
+O = Deuxfleurs
+CN = $APP-client
+
+[v3_req]
+keyUsage = keyEncipherment, keyCertSign, dataEncipherment
+extendedKeyUsage = clientAuth
+subjectAltName = @alt_names
+
+[alt_names]
+DNS.1 = client.$CLUSTER.$APP
+EOF
+	) \
+			-CA <(pass $PREFIX/$APP-ca.crt) \
+			-CAkey <(pass $PREFIX/$APP-ca.key) \
+			-CAcreateserial -days 700 \
+			-CAserial /tmp/tmp-$CLUSTER-$CERT-client.srl \
+			| pass insert -m $PREFIX/$CERT-client.crt
+		rm /tmp/tmp-$CLUSTER-$CERT-client.{csr,srl}
+	fi
+
+	#if [ ! -f $CERT-client.p12 ]; then
+	#	openssl pkcs12 -export -out $CERT-client.p12 \
+	#		-in $APP-ca.pem -in $CERT-client.crt -inkey $CERT-client.key
+	#fi
+done
-- 
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