1 files changed, 167 insertions, 0 deletions
diff --git a/ext/node/polyfills/_crypto/crypto_browserify/asn1.js/base/buffer.js b/ext/node/polyfills/_crypto/crypto_browserify/asn1.js/base/buffer.js
new file mode 100644
index 000000000..cb01476cd
--- /dev/null
+++ b/ext/node/polyfills/_crypto/crypto_browserify/asn1.js/base/buffer.js
@@ -0,0 +1,167 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// Copyright 2017 Fedor Indutny. All rights reserved. MIT license.
+
+import { Reporter } from "internal:deno_node/polyfills/_crypto/crypto_browserify/asn1.js/base/reporter.js";
+import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
+
+export function DecoderBuffer(base, options) {
+  Reporter.call(this, options);
+  if (!Buffer.isBuffer(base)) {
+    this.error("Input not Buffer");
+    return;
+  }
+
+  this.base = base;
+  this.offset = 0;
+  this.length = base.length;
+}
+// inherits(DecoderBuffer, Reporter);
+DecoderBuffer.prototype = Object.create(Reporter.prototype, {
+  constructor: {
+    value: DecoderBuffer,
+    enumerable: false,
+    writable: true,
+    configurable: true,
+  },
+});
+
+DecoderBuffer.isDecoderBuffer = function isDecoderBuffer(data) {
+  if (data instanceof DecoderBuffer) {
+    return true;
+  }
+
+  // Or accept compatible API
+  const isCompatible = typeof data === "object" &&
+    Buffer.isBuffer(data.base) &&
+    data.constructor.name === "DecoderBuffer" &&
+    typeof data.offset === "number" &&
+    typeof data.length === "number" &&
+    typeof data.save === "function" &&
+    typeof data.restore === "function" &&
+    typeof data.isEmpty === "function" &&
+    typeof data.readUInt8 === "function" &&
+    typeof data.skip === "function" &&
+    typeof data.raw === "function";
+
+  return isCompatible;
+};
+
+DecoderBuffer.prototype.save = function save() {
+  return { offset: this.offset, reporter: Reporter.prototype.save.call(this) };
+};
+
+DecoderBuffer.prototype.restore = function restore(save) {
+  // Return skipped data
+  const res = new DecoderBuffer(this.base);
+  res.offset = save.offset;
+  res.length = this.offset;
+
+  this.offset = save.offset;
+  Reporter.prototype.restore.call(this, save.reporter);
+
+  return res;
+};
+
+DecoderBuffer.prototype.isEmpty = function isEmpty() {
+  return this.offset === this.length;
+};
+
+DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) {
+  if (this.offset + 1 <= this.length) {
+    return this.base.readUInt8(this.offset++, true);
+  } else {
+    return this.error(fail || "DecoderBuffer overrun");
+  }
+};
+
+DecoderBuffer.prototype.skip = function skip(bytes, fail) {
+  if (!(this.offset + bytes <= this.length)) {
+    return this.error(fail || "DecoderBuffer overrun");
+  }
+
+  const res = new DecoderBuffer(this.base);
+
+  // Share reporter state
+  res._reporterState = this._reporterState;
+
+  res.offset = this.offset;
+  res.length = this.offset + bytes;
+  this.offset += bytes;
+  return res;
+};
+
+DecoderBuffer.prototype.raw = function raw(save) {
+  return this.base.slice(save ? save.offset : this.offset, this.length);
+};
+
+export function EncoderBuffer(value, reporter) {
+  if (Array.isArray(value)) {
+    this.length = 0;
+    this.value = value.map(function (item) {
+      if (!EncoderBuffer.isEncoderBuffer(item)) {
+        item = new EncoderBuffer(item, reporter);
+      }
+      this.length += item.length;
+      return item;
+    }, this);
+  } else if (typeof value === "number") {
+    if (!(0 <= value && value <= 0xff)) {
+      return reporter.error("non-byte EncoderBuffer value");
+    }
+    this.value = value;
+    this.length = 1;
+  } else if (typeof value === "string") {
+    this.value = value;
+    this.length = Buffer.byteLength(value);
+  } else if (Buffer.isBuffer(value)) {
+    this.value = value;
+    this.length = value.length;
+  } else {
+    return reporter.error("Unsupported type: " + typeof value);
+  }
+}
+
+EncoderBuffer.isEncoderBuffer = function isEncoderBuffer(data) {
+  if (data instanceof EncoderBuffer) {
+    return true;
+  }
+
+  // Or accept compatible API
+  const isCompatible = typeof data === "object" &&
+    data.constructor.name === "EncoderBuffer" &&
+    typeof data.length === "number" &&
+    typeof data.join === "function";
+
+  return isCompatible;
+};
+
+EncoderBuffer.prototype.join = function join(out, offset) {
+  if (!out) {
+    out = Buffer.alloc(this.length);
+  }
+  if (!offset) {
+    offset = 0;
+  }
+
+  if (this.length === 0) {
+    return out;
+  }
+
+  if (Array.isArray(this.value)) {
+    this.value.forEach(function (item) {
+      item.join(out, offset);
+      offset += item.length;
+    });
+  } else {
+    if (typeof this.value === "number") {
+      out[offset] = this.value;
+    } else if (typeof this.value === "string") {
+      out.write(this.value, offset);
+    } else if (Buffer.isBuffer(this.value)) {
+      this.value.copy(out, offset);
+    }
+    offset += this.length;
+  }
+
+  return out;
+};