fedimbed: finally impl request signing

untested

.gitignore

@@ -1,4 +1,5 @@
 node_modules/
+priv/
 
 config.json
 config.prod.json

package.json

@@ -19,6 +19,7 @@
   "homepage": "https://gitdab.com/Cynosphere/HiddenPhox#readme",
   "dependencies": {
     "@ctrl/tinycolor": "^3.6.0",
+    "@peertube/http-signature": "^1.7.0",
     "@projectdysnomia/dysnomia": "^0.1.2",
     "dumpy": "github:Cynosphere/dumpy.js",
     "google-images": "^2.1.0",

pnpm-lock.yaml

@@ -4,6 +4,9 @@ dependencies:
   '@ctrl/tinycolor':
     specifier: ^3.6.0
     version: 3.6.0
+  '@peertube/http-signature':
+    specifier: ^1.7.0
+    version: 1.7.0
   '@projectdysnomia/dysnomia':
     specifier: ^0.1.2
     version: 0.1.2
@@ -898,6 +901,15 @@ packages:
     dev: false
     optional: true
 
+  /@peertube/http-signature@1.7.0:
+    resolution: {integrity: sha512-aGQIwo6/sWtyyqhVK4e1MtxYz4N1X8CNt6SOtCc+Wnczs5S5ONaLHDDR8LYaGn0MgOwvGgXyuZ5sJIfd7iyoUw==}
+    engines: {node: '>=0.10'}
+    dependencies:
+      assert-plus: 1.0.0
+      jsprim: 1.4.2
+      sshpk: 1.17.0
+    dev: false
+
   /@projectdysnomia/dysnomia@0.1.2:
     resolution: {integrity: sha512-F64G64JwFWn/QUFqkhsyBvXJ0Du3E6Y0yu8tSrcukAnSeW8qV+reKqeQnMmHcQWYopwuYM8Q6OF/VX6VKggtOA==}
     engines: {node: '>=10.4.0'}
@@ -1057,6 +1069,17 @@ packages:
     resolution: {integrity: sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==}
     dev: true
 
+  /asn1@0.2.6:
+    resolution: {integrity: sha512-ix/FxPn0MDjeyJ7i/yoHGFt/EX6LyNbxSEhPPXODPL+KB0VPk86UYfL0lMdy+KCnv+fmvIzySwaK5COwqVbWTQ==}
+    dependencies:
+      safer-buffer: 2.1.2
+    dev: false
+
+  /assert-plus@1.0.0:
+    resolution: {integrity: sha512-NfJ4UzBCcQGLDlQq7nHxH+tv3kyZ0hHQqF5BO6J7tNJeP5do1llPr8dZ8zHonfhAu0PHAdMkSo+8o0wxg9lZWw==}
+    engines: {node: '>=0.8'}
+    dev: false
+
   /balanced-match@1.0.2:
     resolution: {integrity: sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==}
 
@@ -1064,6 +1087,12 @@ packages:
     resolution: {integrity: sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==}
     dev: false
 
+  /bcrypt-pbkdf@1.0.2:
+    resolution: {integrity: sha512-qeFIXtP4MSoi6NLqO12WfqARWWuCKi2Rn/9hJLEmtB5yTNr9DqFWkJRCf2qShWzPeAMRnOgCrq0sg/KLv5ES9w==}
+    dependencies:
+      tweetnacl: 0.14.5
+    dev: false
+
   /bl@4.1.0:
     resolution: {integrity: sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==}
     dependencies:
@@ -1218,6 +1247,10 @@ packages:
     resolution: {integrity: sha512-ty/fTekppD2fIwRvnZAVdeOiGd1c7YXEixbgJTNzqcxJWKQnjJ/V1bNEEE6hygpM3WjwHFUVK6HTjWSzV4a8sQ==}
     dev: false
 
+  /core-util-is@1.0.2:
+    resolution: {integrity: sha512-3lqz5YjWTYnW6dlDa5TLaTCcShfar1e40rmcJVwCBJC6mWlFuj0eCHIElmG1g5kyuJ/GD+8Wn4FFCcz4gJPfaQ==}
+    dev: false
+
   /create-error-class@3.0.2:
     resolution: {integrity: sha512-gYTKKexFO3kh200H1Nit76sRwRtOY32vQd3jpAQKpLtZqyNsSQNfI4N7o3eP2wUjV35pTWKRYqFUDBvUha/Pkw==}
     engines: {node: '>=0.10.0'}
@@ -1253,6 +1286,13 @@ packages:
     resolution: {integrity: sha512-iKuQcq+NdHqlAcwUY0o/HL69XQrUaQdMjmStJ8JFmUaiiQErlhrmuigkg/CU4E2J0IyUKUrMAgl36TvN67MqTw==}
     dev: false
 
+  /dashdash@1.14.1:
+    resolution: {integrity: sha512-jRFi8UDGo6j+odZiEpjazZaWqEal3w/basFjQHQEwVtZJGDpxbH1MeYluwCS8Xq5wmLJooDlMgvVarmWfGM44g==}
+    engines: {node: '>=0.10'}
+    dependencies:
+      assert-plus: 1.0.0
+    dev: false
+
   /debug@4.3.4:
     resolution: {integrity: sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==}
     engines: {node: '>=6.0'}
@@ -1337,6 +1377,13 @@ packages:
     resolution: {integrity: sha512-1A8za6ws41LQgv9HrE/66jyC5yuSjQ3L/KOpFtoBilsAK2iA2wuS5rTt1OCzIvtS2V7nVmedsUU+DGRcjBmOYA==}
     dev: false
 
+  /ecc-jsbn@0.1.2:
+    resolution: {integrity: sha512-eh9O+hwRHNbG4BLTjEl3nw044CkGm5X6LoaCf7LPp7UU8Qrt47JYNi6nPX8xjW97TKGKm1ouctg0QSpZe9qrnw==}
+    dependencies:
+      jsbn: 0.1.1
+      safer-buffer: 2.1.2
+    dev: false
+
   /emoji-regex@8.0.0:
     resolution: {integrity: sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==}
     dev: false
@@ -1480,6 +1527,11 @@ packages:
     engines: {node: '>=6'}
     dev: false
 
+  /extsprintf@1.3.0:
+    resolution: {integrity: sha512-11Ndz7Nv+mvAC1j0ktTa7fAb0vLyGGX+rMHNBYQviQDGU0Hw7lhctJANqbPhu9nV9/izT/IntTgZ7Im/9LJs9g==}
+    engines: {'0': node >=0.6.0}
+    dev: false
+
   /fast-deep-equal@3.1.3:
     resolution: {integrity: sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==}
     dev: true
@@ -1583,6 +1635,12 @@ packages:
     engines: {node: '>=4'}
     dev: false
 
+  /getpass@0.1.7:
+    resolution: {integrity: sha512-0fzj9JxOLfJ+XGLhR8ze3unN0KZCgZwiSSDz168VERjK8Wl8kVSdcu2kspd4s4wtAa1y/qrVRiAA0WclVsu0ng==}
+    dependencies:
+      assert-plus: 1.0.0
+    dev: false
+
   /gifwrap@0.9.4:
     resolution: {integrity: sha512-MDMwbhASQuVeD4JKd1fKgNgCRL3fGqMM4WaqpNhWO0JiMOAjbQdumbs4BbBZEy9/M00EHEjKN3HieVhCUlwjeQ==}
     dependencies:
@@ -1890,14 +1948,32 @@ packages:
       argparse: 2.0.1
     dev: true
 
+  /jsbn@0.1.1:
+    resolution: {integrity: sha512-UVU9dibq2JcFWxQPA6KCqj5O42VOmAY3zQUfEKxU0KpTGXwNoCjkX1e13eHNvw/xPynt6pU0rZ1htjWTNTSXsg==}
+    dev: false
+
   /json-schema-traverse@0.4.1:
     resolution: {integrity: sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==}
     dev: true
 
+  /json-schema@0.4.0:
+    resolution: {integrity: sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA==}
+    dev: false
+
   /json-stable-stringify-without-jsonify@1.0.1:
     resolution: {integrity: sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw==}
     dev: true
 
+  /jsprim@1.4.2:
+    resolution: {integrity: sha512-P2bSOMAc/ciLz6DzgjVlGJP9+BrJWu5UDGK70C2iweC5QBIeFf0ZXRvGjEj2uYgrY2MkAAhsSWHDWlFtEroZWw==}
+    engines: {node: '>=0.6.0'}
+    dependencies:
+      assert-plus: 1.0.0
+      extsprintf: 1.3.0
+      json-schema: 0.4.0
+      verror: 1.10.0
+    dev: false
+
   /levn@0.4.1:
     resolution: {integrity: sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ==}
     engines: {node: '>= 0.8.0'}
@@ -2476,7 +2552,6 @@ packages:
   /safer-buffer@2.1.2:
     resolution: {integrity: sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==}
     dev: false
-    optional: true
 
   /sax@1.2.4:
     resolution: {integrity: sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==}
@@ -2593,6 +2668,22 @@ packages:
       - supports-color
     dev: false
 
+  /sshpk@1.17.0:
+    resolution: {integrity: sha512-/9HIEs1ZXGhSPE8X6Ccm7Nam1z8KcoCqPdI7ecm1N33EzAetWahvQWVqLZtaZQ+IDKX4IyA2o0gBzqIMkAagHQ==}
+    engines: {node: '>=0.10.0'}
+    hasBin: true
+    dependencies:
+      asn1: 0.2.6
+      assert-plus: 1.0.0
+      bcrypt-pbkdf: 1.0.2
+      dashdash: 1.14.1
+      ecc-jsbn: 0.1.2
+      getpass: 0.1.7
+      jsbn: 0.1.1
+      safer-buffer: 2.1.2
+      tweetnacl: 0.14.5
+    dev: false
+
   /ssri@8.0.1:
     resolution: {integrity: sha512-97qShzy1AiyxvPNIkLWoGua7xoQzzPjQ0HAH4B0rWKo7SZ6USuPcrUiAFrws0UH8RrbWmgq3LMTObhPIHbbBeQ==}
     engines: {node: '>= 8'}
@@ -2723,6 +2814,10 @@ packages:
       safe-buffer: 5.2.1
     dev: false
 
+  /tweetnacl@0.14.5:
+    resolution: {integrity: sha512-KXXFFdAbFXY4geFIwoyNK+f5Z1b7swfXABfL7HXCmoIWMKU3dmS26672A4EeQtDzLKy7SXmfBu51JolvEKwtGA==}
+    dev: false
+
   /tweetnacl@1.0.3:
     resolution: {integrity: sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw==}
     requiresBuild: true
@@ -2800,6 +2895,15 @@ packages:
     resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
     dev: false
 
+  /verror@1.10.0:
+    resolution: {integrity: sha512-ZZKSmDAEFOijERBLkmYfJ+vmk3w+7hOLYDNkRCuRuMJGEmqYNCNLyBBFwWKVMhfwaEF3WOd0Zlw86U/WC/+nYw==}
+    engines: {'0': node >=0.6.0}
+    dependencies:
+      assert-plus: 1.0.0
+      core-util-is: 1.0.2
+      extsprintf: 1.3.0
+    dev: false
+
   /webidl-conversions@3.0.1:
     resolution: {integrity: sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==}
     dev: false

src/modules/fedimbed.js

@@ -1,4 +1,7 @@
 const {MessageFlags} = require("@projectdysnomia/dysnomia").Constants;
+const fs = require("node:fs");
+const path = require("node:path");
+const httpSignature = require("@peertube/http-signature");
 
 const events = require("../lib/events.js");
 const logger = require("../lib/logger.js");
@@ -64,6 +67,38 @@ async function resolvePlatform(url) {
   return nodeinfo.software.name;
 }
 
+const keyId = "https://hf.c7.pm/action#main-key";
+const privKey = fs.readFileSync(path.resolve("../../priv/private.pem"));
+async function signedFetch(url, options) {
+  const urlObj = new URL(url);
+
+  const headers = {
+    host: urlObj.host,
+    date: new Date().toUTCString(),
+  };
+
+  const headerNames = ["(request-target)", "host", "date"];
+
+  httpSignature.sign(
+    {
+      getHeader: (name) => headers[name.toLowerCase()],
+      setHeader: (name, value) => (headers[name] = value),
+      method: options.method ?? "GET",
+      path: urlObj.pathname,
+    },
+    {
+      keyId,
+      key: privKey,
+      headers: headerNames,
+      authorizationHeaderName: "signature",
+    }
+  );
+
+  options.headers = Object.assign(headers, options.headers ?? {});
+
+  return await fetch(url, options);
+}
+
 async function processUrl(msg, url, spoiler = false) {
   let urlObj = new URL(url);
   let platform = await resolvePlatform(url);
@@ -78,7 +113,7 @@ async function processUrl(msg, url, spoiler = false) {
   let content, cw, author, timestamp;
 
   // Fetch post
-  const rawPostData = await fetch(url, {
+  const rawPostData = await signedFetch(url, {
     headers: {
       "User-Agent": FRIENDLY_USERAGENT,
       Accept: "application/activity+json",
@@ -106,7 +141,7 @@ async function processUrl(msg, url, spoiler = false) {
 
     // Follow redirect from /object since we need the ID from /notice
     if (PATH_REGEX.pleroma.test(urlObj.pathname)) {
-      url = await fetch(url, {
+      url = await signedFetch(url, {
         method: "HEAD",
         headers: {
           "User-Agent": FRIENDLY_USERAGENT,
@@ -157,7 +192,7 @@ async function processUrl(msg, url, spoiler = false) {
           options
         )}, ${JSON.stringify(headers)}`
       );
-      const rawPostData2 = await fetch(
+      const rawPostData2 = await signedFetch(
         redirUrl,
         Object.assign(options, {
           headers: Object.assign(headers, {
@@ -299,12 +334,15 @@ async function processUrl(msg, url, spoiler = false) {
     }
 
     // Author data is not sent with the post with AS2
-    const authorData = await fetch(postData.actor ?? postData.attributedTo, {
+    const authorData = await signedFetch(
-      headers: {
+      postData.actor ?? postData.attributedTo,
-        "User-Agent": FRIENDLY_USERAGENT,
+      {
-        Accept: "application/activity+json",
+        headers: {
-      },
+          "User-Agent": FRIENDLY_USERAGENT,
-    })
+          Accept: "application/activity+json",
+        },
+      }
+    )
       .then((res) => res.json())
       .catch((err) => {
         logger.error("fedimbed", `Failed to get author for "${url}": ${err}`);