auto check certs and enable https by default

index.ts

@@ -3,14 +3,17 @@ import Mustache from 'mustache';
 import path from 'path';
 import { getData } from './src/site';
 
-console.log(
+async function main() {
+  console.log(
     Mustache.render(
       fs.readFileSync(
         path.join(__dirname, '..', 'views', 'nginx.conf.mustache'),
         'utf8',
       ),
-    getData(process.env),
+      await getData(process.env),
       undefined,
       { escape: (v) => v },
     ),
-);
+  );
+}
+main();

package-lock.json

 {
-  "name": "myproject",
+  "name": "nginx-proxy",
   "version": "1.0.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "name": "myproject",
+      "name": "nginx-proxy",
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
+        "lodash": "^4.17.21",
         "mustache": "^4.2.0"
       },
       "devDependencies": {
         "@types/jest": "^28.1.6",
+        "@types/lodash": "^4.14.191",
         "@types/mustache": "^4.2.1",
         "@types/node": "^18.7.3",
         "@typescript-eslint/eslint-plugin": "^4.33.0",
@@ -1208,6 +1210,12 @@
       "integrity": "sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==",
       "dev": true
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.191",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
+      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "dev": true
+    },
     "node_modules/@types/mustache": {
       "version": "4.2.1",
       "resolved": "https://registry.npmjs.org/@types/mustache/-/mustache-4.2.1.tgz",
@@ -3512,6 +3520,11 @@
         "node": ">=8"
       }
     },
+    "node_modules/lodash": {
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+    },
     "node_modules/lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
@@ -5709,6 +5722,12 @@
       "integrity": "sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==",
       "dev": true
     },
+    "@types/lodash": {
+      "version": "4.14.191",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
+      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
+      "dev": true
+    },
     "@types/mustache": {
       "version": "4.2.1",
       "resolved": "https://registry.npmjs.org/@types/mustache/-/mustache-4.2.1.tgz",
@@ -7406,6 +7425,11 @@
         "p-locate": "^4.1.0"
       }
     },
+    "lodash": {
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+    },
     "lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",

package.json

@@ -41,6 +41,7 @@
   },
   "devDependencies": {
     "@types/jest": "^28.1.6",
+    "@types/lodash": "^4.14.191",
     "@types/mustache": "^4.2.1",
     "@types/node": "^18.7.3",
     "@typescript-eslint/eslint-plugin": "^4.33.0",
@@ -55,6 +56,7 @@
     "typescript": "^4.7.4"
   },
   "dependencies": {
+    "lodash": "^4.17.21",
     "mustache": "^4.2.0"
   }
 }

src/check-cert.ts

+import { X509Certificate } from 'crypto';
+import * as fs from 'fs';
+import path from 'path';
+import _ from 'lodash';
+
+class Cert {
+  public cert = new X509Certificate(
+    fs.readFileSync(path.join('/etc/nginx/certs', this.dir, 'fullchain.pem')),
+  );
+  constructor(public dir: string) {}
+
+  isNotExpired() {
+    const now = new Date();
+    const validFrom = new Date(this.cert.validFrom);
+    const validTo = new Date(this.cert.validTo);
+    return now > validFrom && now < validTo;
+  }
+
+  isOkWithDomain(domain: string) {
+    return this.cert.checkHost(domain);
+  }
+
+  isOkWithDomains(domains: string[]) {
+    return domains.every((domain) => this.isOkWithDomain(domain));
+  }
+}
+
+const certs = fs
+  .readdirSync('/etc/nginx/certs')
+  .filter((dir) =>
+    fs.existsSync(path.join('/etc/nginx/certs', dir, 'fullchain.pem')),
+  )
+  .map((dir) => new Cert(dir))
+  .filter((cert) => cert.isNotExpired());
+
+console.error(certs);
+
+export function pickCert(domains: string[]) {
+  const okCerts = certs.filter((cert) => cert.isOkWithDomains(domains));
+  if (!okCerts.length) {
+    return;
+  }
+  return _.maxBy(okCerts, (cert) => cert.cert.validTo).dir;
+}

src/site.ts

+import { pickCert } from './check-cert';
 import { Parser } from './parser';
 import { getSiteNames } from './utility';
 
@@ -45,23 +46,33 @@ export interface RenderData {
   httpExtra?: string[];
 }
 
-function getSiteData(
+async function getSiteData(
   domain: string,
   input: Record<string, string> = process.env,
-): SiteRenderData {
+): Promise<SiteRenderData> {
   const parser = new Parser(`SITE_${domain}_`, input);
   let https: SiteHttps;
   const httpsCert = parser.getString('HTTPS');
-  if (httpsCert) {
+  const domains = domain.split('+');
+  if (httpsCert !== '0' && httpsCert !== 'false') {
+    const cert =
+      !httpsCert ||
+      httpsCert === '1' ||
+      httpsCert === 'true' ||
+      httpsCert === 'auto'
+        ? pickCert(domains)
+        : httpsCert;
+    if (cert) {
       https = {
-      cert: httpsCert,
+        cert,
         ports: parser.getArrayNumber('HTTPS_PORT') || [443],
         redirect: !parser.getBoolean('HTTPS_NOREDIR'),
         hsts: parser.getBoolean('HSTS'),
       };
     }
+  }
   return {
-    domains: domain.split('+'),
+    domains: domains,
     ports: parser.getArrayNumber('PORT') || [80],
     https,
     headers: Object.entries(parser.getDict('HEADER')).map(([name, value]) => ({
@@ -82,9 +93,9 @@ function getSiteData(
   };
 }
 
-export function getData(
+export async function getData(
   input: Record<string, string> = process.env,
-): RenderData {
+): Promise<RenderData> {
   const parser = new Parser('', input);
   return {
     purgeAllowed: parser.getArray('PURGE_ALLOWED'),
@@ -98,7 +109,9 @@ export function getData(
     ticketKeyPath:
       parser.getString('TICKET_KEY_PATH') || '/etc/nginx/generated/ticket.key',
     certsPath: parser.getString('CERTS_PATH') || '/etc/nginx/certs',
-    sites: getSiteNames().map((domain) => getSiteData(domain, input)),
+    sites: await Promise.all(
+      getSiteNames().map((domain) => getSiteData(domain, input)),
+    ),
     httpExtra: parser.getArray('HTTP_EXTRA'),
   };
 }