Add script to generate certs for local development

cmd/hub/gencerts.sh

@@ -0,0 +1,174 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash --pure
+#! nix-shell -p bash cfssl openssl
+#! nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/4ecab3273592f27479a583fb6d975d4aba3486fe.tar.gz
+
+
+TMPDIR=$(mktemp -d)
+OUTDIR="./.certs"
+ca="ca"
+ca_csr="${TMPDIR}/ca.json"
+ca_config="${TMPDIR}/ca-config.json"
+
+
+key_algo=rsa
+key_size=2048
+cert_expire=43800 # = 5 years * 365 days * 24 hours
+
+C="US"
+L="PA"
+O="Equinix Metal Development"
+OU="Nautilus"
+ST="Philadelphia"
+
+cat <<-EOFCACONFIG > ${ca_config}
+{
+    "signing": {
+        "default": {
+            "expiry": "${cert_expire}h"
+        },
+        "profiles": {
+            "server": {
+                "expiry": "${cert_expire}h",
+                "usages": [
+                    "signing",
+                    "key encipherment",
+                    "server auth"
+                ]
+            },
+            "client": {
+                "expiry": "${cert_expire}h",
+                "usages": [
+                    "signing",
+                    "key encipherment",
+                    "client auth"
+                ]
+            },
+            "client-server": {
+                "expiry": "${cert_expire}h",
+                "usages": [
+                    "signing",
+                    "key encipherment",
+                    "server auth",
+                    "client auth"
+                ]
+            }
+        }
+    }
+}
+EOFCACONFIG
+
+function generate_ca {
+    echo "==================== generating self-signed CA key pair"
+
+    cat <<-EOFCACSR > ${ca_csr}
+{
+    "CN": "Nautilus Local CA",
+    "key": {
+        "algo": "${key_algo}",
+        "size": ${key_size}
+    },
+    "names": [
+        {
+            "C": "${C}",
+            "L": "${L}",
+            "O": "${O}",
+            "ST": "${ST}",
+            "OU": "${OU}"
+        }
+    ]
+}
+EOFCACSR
+
+    cfssl gencert -initca "${ca_csr}" | cfssljson -bare ${ca}
+    mv "${ca}.pem" "${OUTDIR}/${ca}.pem"
+    mv "${ca}-key.pem" "${OUTDIR}/${ca}-key.pem"
+}
+
+function generate_server_certificate {
+    echo "=================== generating server certificate"
+
+    server_csr="${TMPDIR}/server-csr.json"
+    cat <<EOF > ${server_csr}
+{
+    "CN": "Nautilus Hub",
+    "hosts": [ "localhost", "hub.example.net" ],
+    "key": {
+        "algo": "${key_algo}",
+        "size": ${key_size}
+    }
+}
+EOF
+
+    cfssl gencert -ca="${OUTDIR}/${ca}.pem" -ca-key="${OUTDIR}/${ca}-key.pem" -config="${ca_config}" -profile=client-server ${server_csr} | cfssljson -bare server
+}
+
+function generate_client_certificate {
+    echo "================== generating client certificate"
+
+    client_csr="${TMPDIR}/client-csr.json"
+    cat <<EOF > ${client_csr}
+{
+    "CN": "Nautilus Spoke 1",
+    "hosts": [ "localhost", "spoke1.example.net" ],
+    "key": {
+        "algo": "${key_algo}",
+        "size": ${key_size}
+    }
+}
+EOF
+
+    cfssl gencert -ca="${OUTDIR}/${ca}.pem" -ca-key="${OUTDIR}/${ca}-key.pem" -config="${ca_config}" -profile=client ${client_csr} | cfssljson -bare client
+}
+
+
+function generate_admin_certificate {
+    echo "================= generating admin certificate"
+
+    admin_csr="${TMPDIR}/admin-csr.json"
+    cat <<EOF > ${admin_csr}
+{
+    "CN": "Nautilus Admin - Adam",
+    "key": {
+        "algo": "${key_algo}",
+        "size": ${key_size}
+    },
+    "names": [
+        {
+            "C": "${C}",
+            "L": "${L}",
+            "O": "${O}",
+            "ST": "${ST}",
+            "OU": "Nautilus Admins"
+        }
+    ]
+}
+EOF
+    cfssl gencert -ca="${OUTDIR}/${ca}.pem" -ca-key="${OUTDIR}/${ca}-key.pem" -config="${ca_config}" -profile=client ${admin_csr} | cfssljson -bare admin
+}
+
+
+function move_certs {
+        echo "================ copying certificates to ${OUTDIR}"
+    for c in server client admin; do
+	[[ -f "${c}-key.pem" ]] &&  mv "${c}-key.pem" "${OUTDIR}/${c}-key.pem" || echo "${c}-key.pem not regenerated"
+	[[ -f "${c}.pem" ]] && mv "${c}.pem" "${OUTDIR}/${c}.pem" || echo "${c}.pem not regenerated"
+    done
+}
+
+
+function main {
+    mkdir -p "${OUTDIR}"
+
+    [[ -f "${OUTDIR}/ca.pem" ]] || generate_ca
+    [[ -f "${OUTDIR}/server.pem" ]] || generate_server_certificate
+    [[ -f "${OUTDIR}/client.pem" ]] || generate_client_certificate
+    [[ -f "${OUTDIR}/admin.pem" ]] || generate_admin_certificate
+    move_certs
+
+    rm {ca,server,admin,client}.csr 2>/dev/null
+
+    chmod 600 ${OUTDIR}/*-key.pem
+}
+
+main