test(fuzz): add fuzz tests

.gitignore

@@ -2,7 +2,7 @@
 node_modules/
 npm*
 test/lib/
-test/typescript/definitions.js
 dist/
 openpgp.store/
 coverage
+test/fuzz/reports

package.json

@@ -47,6 +47,8 @@
     "prepare": "npm run build",
     "test": "mocha --timeout 120000 test/unittests.js",
     "test-type-definitions": "node --loader ts-node/esm test/typescript/definitions.ts",
+    "fuzz": "jazzer test/fuzz/$TARGET.cjs -- -artifact_prefix=test/fuzz/reports/",
+    "fuzz-coverage": "jazzer test/fuzz/$TARGET.cjs --coverage --cov_dir=test/fuzz/coverage -- -artifact_prefix=test/fuzz/reports/",
     "benchmark-time": "node test/benchmarks/time.js",
     "benchmark-memory-usage": "node test/benchmarks/memory_usage.js",
     "start": "http-server",

test/fuzz/createCleartextMessage.cjs

@@ -0,0 +1,14 @@
+const { FuzzedDataProvider } = require('@jazzer.js/core');
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const data = new FuzzedDataProvider(inputData);
+    const text = data.bufToPrintableString(inputData, 2, 444, 'utf-8');
+    return openpgp.default.createCleartextMessage({ text });
+  });
+
+};
+

test/fuzz/createMessageBinary.cjs

@@ -0,0 +1,9 @@
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    return openpgp.default.createMessage({ binary: new Uint8Array(inputData) });
+  });
+};
+

test/fuzz/createMessageText.cjs

@@ -0,0 +1,11 @@
+const { FuzzedDataProvider } = require('@jazzer.js/core');
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const data = new FuzzedDataProvider(inputData);
+    return openpgp.default.createMessage({ text: data.consumeString(444, 'utf-8') });
+  });
+};

test/fuzz/generateKey.cjs

@@ -0,0 +1,22 @@
+const { FuzzedDataProvider } = require('@jazzer.js/core');
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const data = new FuzzedDataProvider(inputData);
+    const asciiString = data.consumeString(111);
+    const utf8String = data.consumeString(33, 'utf-8');
+
+    return openpgp.default.generateKey({ userIDs: [
+      { name: utf8String },
+      { email: utf8String },
+      { comment: asciiString },
+      { name: utf8String, email: utf8String, comment: asciiString }
+    ],
+    passphrase: asciiString,
+    format: 'object' });
+  });
+};
+

test/fuzz/readKeyArmored.cjs

@@ -0,0 +1,26 @@
+const { FuzzedDataProvider } = require('@jazzer.js/core');
+
+const ignored = ['Misformed armored text'];
+
+function ignoredError(error) {
+  return ignored.some(message => error.message.includes(message));
+}
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const data = new FuzzedDataProvider(inputData);
+    const fuzzedText = data.consumeString(333, 'utf-8');
+    const armoredKey = `-----BEGIN PGP PRIVATE KEY BLOCK----- ${fuzzedText} -----END PGP PRIVATE KEY BLOCK-----`;
+
+    return openpgp.default.readKey({ armoredKey })
+      .catch(error => {
+        if (error.message && !ignoredError(error)) {
+          throw error;
+        }
+      });
+  });
+};
+

test/fuzz/readKeyBinary.cjs

@@ -0,0 +1,22 @@
+const ignored = ['This message / key probably does not conform to a valid OpenPGP format'];
+
+function ignoredError(error) {
+  return ignored.some(message => error.message.includes(message));
+}
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const binaryKey = new Uint8Array(`-----BEGIN PGP PRIVATE KEY BLOCK----- ${inputData} -----END PGP PRIVATE KEY BLOCK-----`);
+
+    return openpgp.default.readKey({ binaryKey })
+      .catch(error => {
+        if (error.message && !ignoredError(error)) {
+          throw error;
+        }
+      });
+  });
+};
+

test/fuzz/readMessageBinary.cjs

@@ -0,0 +1,22 @@
+const ignored = ['This message / key probably does not conform to a valid OpenPGP format'];
+
+function ignoredError(error) {
+  return ignored.some(message => error.message.includes(message));
+}
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const binaryMessage = new Uint8Array(`-----BEGIN PGP MESSAGE----- ${inputData} -----END PGP MESSAGE-----`);
+
+    return openpgp.default.readMessage({ binaryMessage })
+      .catch(error => {
+        if (error.message && !ignoredError(error)) {
+          throw error;
+        }
+      });
+  });
+};
+

test/fuzz/readMessageText.cjs

@@ -0,0 +1,26 @@
+const { FuzzedDataProvider } = require('@jazzer.js/core');
+
+const ignored = ['Misformed armored text'];
+
+function ignoredError(error) {
+  return ignored.some(message => error.message.includes(message));
+}
+
+/**
+ * @param { Buffer } inputData
+ */
+module.exports.fuzz = function(inputData) {
+  import('../initOpenpgp.js').then(openpgp => {
+    const data = new FuzzedDataProvider(inputData);
+    const fuzzedText = data.consumeString(333, 'utf-8');
+    const armoredMessage = `-----BEGIN PGP MESSAGE----- ${fuzzedText} -----END PGP MESSAGE-----`;
+
+    return openpgp.default.readMessage({ armoredMessage })
+      .catch(error => {
+        if (error.message && !ignoredError(error)) {
+          throw error;
+        }
+      });
+  });
+};
+