1 files changed, 348 insertions, 0 deletions
diff --git a/ext/node/polyfills/_crypto/crypto_browserify/asn1.js/encoders/der.js b/ext/node/polyfills/_crypto/crypto_browserify/asn1.js/encoders/der.js
new file mode 100644
index 000000000..3f03ef347
--- /dev/null
+++ b/ext/node/polyfills/_crypto/crypto_browserify/asn1.js/encoders/der.js
@@ -0,0 +1,348 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// Copyright 2017 Fedor Indutny. All rights reserved. MIT license.
+
+import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
+import { Node } from "internal:deno_node/polyfills/_crypto/crypto_browserify/asn1.js/base/node.js";
+
+// Import DER constants
+import * as der from "internal:deno_node/polyfills/_crypto/crypto_browserify/asn1.js/constants/der.js";
+
+export function DEREncoder(entity) {
+  this.enc = "der";
+  this.name = entity.name;
+  this.entity = entity;
+
+  // Construct base tree
+  this.tree = new DERNode();
+  this.tree._init(entity.body);
+}
+
+DEREncoder.prototype.encode = function encode(data, reporter) {
+  return this.tree._encode(data, reporter).join();
+};
+
+// Tree methods
+
+function DERNode(parent) {
+  Node.call(this, "der", parent);
+}
+// inherits(DERNode, Node);
+DERNode.prototype = Object.create(Node.prototype, {
+  constructor: {
+    value: DERNode,
+    enumerable: false,
+    writable: true,
+    configurable: true,
+  },
+});
+
+DERNode.prototype._encodeComposite = function encodeComposite(
+  tag,
+  primitive,
+  cls,
+  content,
+) {
+  const encodedTag = encodeTag(tag, primitive, cls, this.reporter);
+
+  // Short form
+  if (content.length < 0x80) {
+    const header = Buffer.alloc(2);
+    header[0] = encodedTag;
+    header[1] = content.length;
+    return this._createEncoderBuffer([header, content]);
+  }
+
+  // Long form
+  // Count octets required to store length
+  let lenOctets = 1;
+  for (let i = content.length; i >= 0x100; i >>= 8) {
+    lenOctets++;
+  }
+
+  const header = Buffer.alloc(1 + 1 + lenOctets);
+  header[0] = encodedTag;
+  header[1] = 0x80 | lenOctets;
+
+  for (let i = 1 + lenOctets, j = content.length; j > 0; i--, j >>= 8) {
+    header[i] = j & 0xff;
+  }
+
+  return this._createEncoderBuffer([header, content]);
+};
+
+DERNode.prototype._encodeStr = function encodeStr(str, tag) {
+  if (tag === "bitstr") {
+    return this._createEncoderBuffer([str.unused | 0, str.data]);
+  } else if (tag === "bmpstr") {
+    const buf = Buffer.alloc(str.length * 2);
+    for (let i = 0; i < str.length; i++) {
+      buf.writeUInt16BE(str.charCodeAt(i), i * 2);
+    }
+    return this._createEncoderBuffer(buf);
+  } else if (tag === "numstr") {
+    if (!this._isNumstr(str)) {
+      return this.reporter.error(
+        "Encoding of string type: numstr supports " +
+          "only digits and space",
+      );
+    }
+    return this._createEncoderBuffer(str);
+  } else if (tag === "printstr") {
+    if (!this._isPrintstr(str)) {
+      return this.reporter.error(
+        "Encoding of string type: printstr supports " +
+          "only latin upper and lower case letters, " +
+          "digits, space, apostrophe, left and rigth " +
+          "parenthesis, plus sign, comma, hyphen, " +
+          "dot, slash, colon, equal sign, " +
+          "question mark",
+      );
+    }
+    return this._createEncoderBuffer(str);
+  } else if (/str$/.test(tag)) {
+    return this._createEncoderBuffer(str);
+  } else if (tag === "objDesc") {
+    return this._createEncoderBuffer(str);
+  } else {
+    return this.reporter.error(
+      "Encoding of string type: " + tag +
+        " unsupported",
+    );
+  }
+};
+
+DERNode.prototype._encodeObjid = function encodeObjid(id, values, relative) {
+  if (typeof id === "string") {
+    if (!values) {
+      return this.reporter.error("string objid given, but no values map found");
+    }
+    // deno-lint-ignore no-prototype-builtins
+    if (!values.hasOwnProperty(id)) {
+      return this.reporter.error("objid not found in values map");
+    }
+    id = values[id].split(/[\s.]+/g);
+    for (let i = 0; i < id.length; i++) {
+      id[i] |= 0;
+    }
+  } else if (Array.isArray(id)) {
+    id = id.slice();
+    for (let i = 0; i < id.length; i++) {
+      id[i] |= 0;
+    }
+  }
+
+  if (!Array.isArray(id)) {
+    return this.reporter.error(
+      "objid() should be either array or string, " +
+        "got: " + JSON.stringify(id),
+    );
+  }
+
+  if (!relative) {
+    if (id[1] >= 40) {
+      return this.reporter.error("Second objid identifier OOB");
+    }
+    id.splice(0, 2, id[0] * 40 + id[1]);
+  }
+
+  // Count number of octets
+  let size = 0;
+  for (let i = 0; i < id.length; i++) {
+    let ident = id[i];
+    for (size++; ident >= 0x80; ident >>= 7) {
+      size++;
+    }
+  }
+
+  const objid = Buffer.alloc(size);
+  let offset = objid.length - 1;
+  for (let i = id.length - 1; i >= 0; i--) {
+    let ident = id[i];
+    objid[offset--] = ident & 0x7f;
+    while ((ident >>= 7) > 0) {
+      objid[offset--] = 0x80 | (ident & 0x7f);
+    }
+  }
+
+  return this._createEncoderBuffer(objid);
+};
+
+function two(num) {
+  if (num < 10) {
+    return "0" + num;
+  } else {
+    return num;
+  }
+}
+
+DERNode.prototype._encodeTime = function encodeTime(time, tag) {
+  let str;
+  const date = new Date(time);
+
+  if (tag === "gentime") {
+    str = [
+      two(date.getUTCFullYear()),
+      two(date.getUTCMonth() + 1),
+      two(date.getUTCDate()),
+      two(date.getUTCHours()),
+      two(date.getUTCMinutes()),
+      two(date.getUTCSeconds()),
+      "Z",
+    ].join("");
+  } else if (tag === "utctime") {
+    str = [
+      two(date.getUTCFullYear() % 100),
+      two(date.getUTCMonth() + 1),
+      two(date.getUTCDate()),
+      two(date.getUTCHours()),
+      two(date.getUTCMinutes()),
+      two(date.getUTCSeconds()),
+      "Z",
+    ].join("");
+  } else {
+    this.reporter.error("Encoding " + tag + " time is not supported yet");
+  }
+
+  return this._encodeStr(str, "octstr");
+};
+
+DERNode.prototype._encodeNull = function encodeNull() {
+  return this._createEncoderBuffer("");
+};
+
+DERNode.prototype._encodeInt = function encodeInt(num, values) {
+  if (typeof num === "string") {
+    if (!values) {
+      return this.reporter.error("String int or enum given, but no values map");
+    }
+    // deno-lint-ignore no-prototype-builtins
+    if (!values.hasOwnProperty(num)) {
+      return this.reporter.error(
+        "Values map doesn't contain: " +
+          JSON.stringify(num),
+      );
+    }
+    num = values[num];
+  }
+
+  // Bignum, assume big endian
+  if (typeof num !== "number" && !Buffer.isBuffer(num)) {
+    const numArray = num.toArray();
+    if (!num.sign && numArray[0] & 0x80) {
+      numArray.unshift(0);
+    }
+    num = Buffer.from(numArray);
+  }
+
+  if (Buffer.isBuffer(num)) {
+    let size = num.length;
+    if (num.length === 0) {
+      size++;
+    }
+
+    const out = Buffer.alloc(size);
+    num.copy(out);
+    if (num.length === 0) {
+      out[0] = 0;
+    }
+    return this._createEncoderBuffer(out);
+  }
+
+  if (num < 0x80) {
+    return this._createEncoderBuffer(num);
+  }
+
+  if (num < 0x100) {
+    return this._createEncoderBuffer([0, num]);
+  }
+
+  let size = 1;
+  for (let i = num; i >= 0x100; i >>= 8) {
+    size++;
+  }
+
+  const out = new Array(size);
+  for (let i = out.length - 1; i >= 0; i--) {
+    out[i] = num & 0xff;
+    num >>= 8;
+  }
+  if (out[0] & 0x80) {
+    out.unshift(0);
+  }
+
+  return this._createEncoderBuffer(Buffer.from(out));
+};
+
+DERNode.prototype._encodeBool = function encodeBool(value) {
+  return this._createEncoderBuffer(value ? 0xff : 0);
+};
+
+DERNode.prototype._use = function use(entity, obj) {
+  if (typeof entity === "function") {
+    entity = entity(obj);
+  }
+  return entity._getEncoder("der").tree;
+};
+
+DERNode.prototype._skipDefault = function skipDefault(
+  dataBuffer,
+  reporter,
+  parent,
+) {
+  const state = this._baseState;
+  let i;
+  if (state["default"] === null) {
+    return false;
+  }
+
+  const data = dataBuffer.join();
+  if (state.defaultBuffer === undefined) {
+    state.defaultBuffer = this._encodeValue(state["default"], reporter, parent)
+      .join();
+  }
+
+  if (data.length !== state.defaultBuffer.length) {
+    return false;
+  }
+
+  for (i = 0; i < data.length; i++) {
+    if (data[i] !== state.defaultBuffer[i]) {
+      return false;
+    }
+  }
+
+  return true;
+};
+
+// Utility methods
+
+function encodeTag(tag, primitive, cls, reporter) {
+  let res;
+
+  if (tag === "seqof") {
+    tag = "seq";
+  } else if (tag === "setof") {
+    tag = "set";
+  }
+
+  // deno-lint-ignore no-prototype-builtins
+  if (der.tagByName.hasOwnProperty(tag)) {
+    res = der.tagByName[tag];
+  } else if (typeof tag === "number" && (tag | 0) === tag) {
+    res = tag;
+  } else {
+    return reporter.error("Unknown tag: " + tag);
+  }
+
+  if (res >= 0x1f) {
+    return reporter.error("Multi-octet tag encoding unsupported");
+  }
+
+  if (!primitive) {
+    res |= 0x20;
+  }
+
+  res |= der.tagClassByName[cls || "universal"] << 6;
+
+  return res;
+}