first commit

4 files changed, 1656 insertions, 0 deletions

diff --git a/node_modules/busboy/lib/index.js b/node_modules/busboy/lib/index.js
new file mode 100644
index 0000000..873272d
--- /dev/null
+++ b/node_modules/busboy/lib/index.js
@@ -0,0 +1,57 @@
+'use strict';
+
+const { parseContentType } = require('./utils.js');
+
+function getInstance(cfg) {
+  const headers = cfg.headers;
+  const conType = parseContentType(headers['content-type']);
+  if (!conType)
+    throw new Error('Malformed content type');
+
+  for (const type of TYPES) {
+    const matched = type.detect(conType);
+    if (!matched)
+      continue;
+
+    const instanceCfg = {
+      limits: cfg.limits,
+      headers,
+      conType,
+      highWaterMark: undefined,
+      fileHwm: undefined,
+      defCharset: undefined,
+      defParamCharset: undefined,
+      preservePath: false,
+    };
+    if (cfg.highWaterMark)
+      instanceCfg.highWaterMark = cfg.highWaterMark;
+    if (cfg.fileHwm)
+      instanceCfg.fileHwm = cfg.fileHwm;
+    instanceCfg.defCharset = cfg.defCharset;
+    instanceCfg.defParamCharset = cfg.defParamCharset;
+    instanceCfg.preservePath = cfg.preservePath;
+    return new type(instanceCfg);
+  }
+
+  throw new Error(`Unsupported content type: ${headers['content-type']}`);
+}
+
+// Note: types are explicitly listed here for easier bundling
+// See: https://github.com/mscdex/busboy/issues/121
+const TYPES = [
+  require('./types/multipart'),
+  require('./types/urlencoded'),
+].filter(function(typemod) { return typeof typemod.detect === 'function'; });
+
+module.exports = (cfg) => {
+  if (typeof cfg !== 'object' || cfg === null)
+    cfg = {};
+
+  if (typeof cfg.headers !== 'object'
+      || cfg.headers === null
+      || typeof cfg.headers['content-type'] !== 'string') {
+    throw new Error('Missing Content-Type');
+  }
+
+  return getInstance(cfg);
+};
diff --git a/node_modules/busboy/lib/types/multipart.js b/node_modules/busboy/lib/types/multipart.js
new file mode 100644
index 0000000..cc0d7bb
--- /dev/null
+++ b/node_modules/busboy/lib/types/multipart.js
@@ -0,0 +1,653 @@
+'use strict';
+
+const { Readable, Writable } = require('stream');
+
+const StreamSearch = require('streamsearch');
+
+const {
+  basename,
+  convertToUTF8,
+  getDecoder,
+  parseContentType,
+  parseDisposition,
+} = require('../utils.js');
+
+const BUF_CRLF = Buffer.from('\r\n');
+const BUF_CR = Buffer.from('\r');
+const BUF_DASH = Buffer.from('-');
+
+function noop() {}
+
+const MAX_HEADER_PAIRS = 2000; // From node
+const MAX_HEADER_SIZE = 16 * 1024; // From node (its default value)
+
+const HPARSER_NAME = 0;
+const HPARSER_PRE_OWS = 1;
+const HPARSER_VALUE = 2;
+class HeaderParser {
+  constructor(cb) {
+    this.header = Object.create(null);
+    this.pairCount = 0;
+    this.byteCount = 0;
+    this.state = HPARSER_NAME;
+    this.name = '';
+    this.value = '';
+    this.crlf = 0;
+    this.cb = cb;
+  }
+
+  reset() {
+    this.header = Object.create(null);
+    this.pairCount = 0;
+    this.byteCount = 0;
+    this.state = HPARSER_NAME;
+    this.name = '';
+    this.value = '';
+    this.crlf = 0;
+  }
+
+  push(chunk, pos, end) {
+    let start = pos;
+    while (pos < end) {
+      switch (this.state) {
+        case HPARSER_NAME: {
+          let done = false;
+          for (; pos < end; ++pos) {
+            if (this.byteCount === MAX_HEADER_SIZE)
+              return -1;
+            ++this.byteCount;
+            const code = chunk[pos];
+            if (TOKEN[code] !== 1) {
+              if (code !== 58/* ':' */)
+                return -1;
+              this.name += chunk.latin1Slice(start, pos);
+              if (this.name.length === 0)
+                return -1;
+              ++pos;
+              done = true;
+              this.state = HPARSER_PRE_OWS;
+              break;
+            }
+          }
+          if (!done) {
+            this.name += chunk.latin1Slice(start, pos);
+            break;
+          }
+          // FALLTHROUGH
+        }
+        case HPARSER_PRE_OWS: {
+          // Skip optional whitespace
+          let done = false;
+          for (; pos < end; ++pos) {
+            if (this.byteCount === MAX_HEADER_SIZE)
+              return -1;
+            ++this.byteCount;
+            const code = chunk[pos];
+            if (code !== 32/* ' ' */ && code !== 9/* '\t' */) {
+              start = pos;
+              done = true;
+              this.state = HPARSER_VALUE;
+              break;
+            }
+          }
+          if (!done)
+            break;
+          // FALLTHROUGH
+        }
+        case HPARSER_VALUE:
+          switch (this.crlf) {
+            case 0: // Nothing yet
+              for (; pos < end; ++pos) {
+                if (this.byteCount === MAX_HEADER_SIZE)
+                  return -1;
+                ++this.byteCount;
+                const code = chunk[pos];
+                if (FIELD_VCHAR[code] !== 1) {
+                  if (code !== 13/* '\r' */)
+                    return -1;
+                  ++this.crlf;
+                  break;
+                }
+              }
+              this.value += chunk.latin1Slice(start, pos++);
+              break;
+            case 1: // Received CR
+              if (this.byteCount === MAX_HEADER_SIZE)
+                return -1;
+              ++this.byteCount;
+              if (chunk[pos++] !== 10/* '\n' */)
+                return -1;
+              ++this.crlf;
+              break;
+            case 2: { // Received CR LF
+              if (this.byteCount === MAX_HEADER_SIZE)
+                return -1;
+              ++this.byteCount;
+              const code = chunk[pos];
+              if (code === 32/* ' ' */ || code === 9/* '\t' */) {
+                // Folded value
+                start = pos;
+                this.crlf = 0;
+              } else {
+                if (++this.pairCount < MAX_HEADER_PAIRS) {
+                  this.name = this.name.toLowerCase();
+                  if (this.header[this.name] === undefined)
+                    this.header[this.name] = [this.value];
+                  else
+                    this.header[this.name].push(this.value);
+                }
+                if (code === 13/* '\r' */) {
+                  ++this.crlf;
+                  ++pos;
+                } else {
+                  // Assume start of next header field name
+                  start = pos;
+                  this.crlf = 0;
+                  this.state = HPARSER_NAME;
+                  this.name = '';
+                  this.value = '';
+                }
+              }
+              break;
+            }
+            case 3: { // Received CR LF CR
+              if (this.byteCount === MAX_HEADER_SIZE)
+                return -1;
+              ++this.byteCount;
+              if (chunk[pos++] !== 10/* '\n' */)
+                return -1;
+              // End of header
+              const header = this.header;
+              this.reset();
+              this.cb(header);
+              return pos;
+            }
+          }
+          break;
+      }
+    }
+
+    return pos;
+  }
+}
+
+class FileStream extends Readable {
+  constructor(opts, owner) {
+    super(opts);
+    this.truncated = false;
+    this._readcb = null;
+    this.once('end', () => {
+      // We need to make sure that we call any outstanding _writecb() that is
+      // associated with this file so that processing of the rest of the form
+      // can continue. This may not happen if the file stream ends right after
+      // backpressure kicks in, so we force it here.
+      this._read();
+      if (--owner._fileEndsLeft === 0 && owner._finalcb) {
+        const cb = owner._finalcb;
+        owner._finalcb = null;
+        // Make sure other 'end' event handlers get a chance to be executed
+        // before busboy's 'finish' event is emitted
+        process.nextTick(cb);
+      }
+    });
+  }
+  _read(n) {
+    const cb = this._readcb;
+    if (cb) {
+      this._readcb = null;
+      cb();
+    }
+  }
+}
+
+const ignoreData = {
+  push: (chunk, pos) => {},
+  destroy: () => {},
+};
+
+function callAndUnsetCb(self, err) {
+  const cb = self._writecb;
+  self._writecb = null;
+  if (err)
+    self.destroy(err);
+  else if (cb)
+    cb();
+}
+
+function nullDecoder(val, hint) {
+  return val;
+}
+
+class Multipart extends Writable {
+  constructor(cfg) {
+    const streamOpts = {
+      autoDestroy: true,
+      emitClose: true,
+      highWaterMark: (typeof cfg.highWaterMark === 'number'
+                      ? cfg.highWaterMark
+                      : undefined),
+    };
+    super(streamOpts);
+
+    if (!cfg.conType.params || typeof cfg.conType.params.boundary !== 'string')
+      throw new Error('Multipart: Boundary not found');
+
+    const boundary = cfg.conType.params.boundary;
+    const paramDecoder = (typeof cfg.defParamCharset === 'string'
+                            && cfg.defParamCharset
+                          ? getDecoder(cfg.defParamCharset)
+                          : nullDecoder);
+    const defCharset = (cfg.defCharset || 'utf8');
+    const preservePath = cfg.preservePath;
+    const fileOpts = {
+      autoDestroy: true,
+      emitClose: true,
+      highWaterMark: (typeof cfg.fileHwm === 'number'
+                      ? cfg.fileHwm
+                      : undefined),
+    };
+
+    const limits = cfg.limits;
+    const fieldSizeLimit = (limits && typeof limits.fieldSize === 'number'
+                            ? limits.fieldSize
+                            : 1 * 1024 * 1024);
+    const fileSizeLimit = (limits && typeof limits.fileSize === 'number'
+                           ? limits.fileSize
+                           : Infinity);
+    const filesLimit = (limits && typeof limits.files === 'number'
+                        ? limits.files
+                        : Infinity);
+    const fieldsLimit = (limits && typeof limits.fields === 'number'
+                         ? limits.fields
+                         : Infinity);
+    const partsLimit = (limits && typeof limits.parts === 'number'
+                        ? limits.parts
+                        : Infinity);
+
+    let parts = -1; // Account for initial boundary
+    let fields = 0;
+    let files = 0;
+    let skipPart = false;
+
+    this._fileEndsLeft = 0;
+    this._fileStream = undefined;
+    this._complete = false;
+    let fileSize = 0;
+
+    let field;
+    let fieldSize = 0;
+    let partCharset;
+    let partEncoding;
+    let partType;
+    let partName;
+    let partTruncated = false;
+
+    let hitFilesLimit = false;
+    let hitFieldsLimit = false;
+
+    this._hparser = null;
+    const hparser = new HeaderParser((header) => {
+      this._hparser = null;
+      skipPart = false;
+
+      partType = 'text/plain';
+      partCharset = defCharset;
+      partEncoding = '7bit';
+      partName = undefined;
+      partTruncated = false;
+
+      let filename;
+      if (!header['content-disposition']) {
+        skipPart = true;
+        return;
+      }
+
+      const disp = parseDisposition(header['content-disposition'][0],
+                                    paramDecoder);
+      if (!disp || disp.type !== 'form-data') {
+        skipPart = true;
+        return;
+      }
+
+      if (disp.params) {
+        if (disp.params.name)
+          partName = disp.params.name;
+
+        if (disp.params['filename*'])
+          filename = disp.params['filename*'];
+        else if (disp.params.filename)
+          filename = disp.params.filename;
+
+        if (filename !== undefined && !preservePath)
+          filename = basename(filename);
+      }
+
+      if (header['content-type']) {
+        const conType = parseContentType(header['content-type'][0]);
+        if (conType) {
+          partType = `${conType.type}/${conType.subtype}`;
+          if (conType.params && typeof conType.params.charset === 'string')
+            partCharset = conType.params.charset.toLowerCase();
+        }
+      }
+
+      if (header['content-transfer-encoding'])
+        partEncoding = header['content-transfer-encoding'][0].toLowerCase();
+
+      if (partType === 'application/octet-stream' || filename !== undefined) {
+        // File
+
+        if (files === filesLimit) {
+          if (!hitFilesLimit) {
+            hitFilesLimit = true;
+            this.emit('filesLimit');
+          }
+          skipPart = true;
+          return;
+        }
+        ++files;
+
+        if (this.listenerCount('file') === 0) {
+          skipPart = true;
+          return;
+        }
+
+        fileSize = 0;
+        this._fileStream = new FileStream(fileOpts, this);
+        ++this._fileEndsLeft;
+        this.emit(
+          'file',
+          partName,
+          this._fileStream,
+          { filename,
+            encoding: partEncoding,
+            mimeType: partType }
+        );
+      } else {
+        // Non-file
+
+        if (fields === fieldsLimit) {
+          if (!hitFieldsLimit) {
+            hitFieldsLimit = true;
+            this.emit('fieldsLimit');
+          }
+          skipPart = true;
+          return;
+        }
+        ++fields;
+
+        if (this.listenerCount('field') === 0) {
+          skipPart = true;
+          return;
+        }
+
+        field = [];
+        fieldSize = 0;
+      }
+    });
+
+    let matchPostBoundary = 0;
+    const ssCb = (isMatch, data, start, end, isDataSafe) => {
+retrydata:
+      while (data) {
+        if (this._hparser !== null) {
+          const ret = this._hparser.push(data, start, end);
+          if (ret === -1) {
+            this._hparser = null;
+            hparser.reset();
+            this.emit('error', new Error('Malformed part header'));
+            break;
+          }
+          start = ret;
+        }
+
+        if (start === end)
+          break;
+
+        if (matchPostBoundary !== 0) {
+          if (matchPostBoundary === 1) {
+            switch (data[start]) {
+              case 45: // '-'
+                // Try matching '--' after boundary
+                matchPostBoundary = 2;
+                ++start;
+                break;
+              case 13: // '\r'
+                // Try matching CR LF before header
+                matchPostBoundary = 3;
+                ++start;
+                break;
+              default:
+                matchPostBoundary = 0;
+            }
+            if (start === end)
+              return;
+          }
+
+          if (matchPostBoundary === 2) {
+            matchPostBoundary = 0;
+            if (data[start] === 45/* '-' */) {
+              // End of multipart data
+              this._complete = true;
+              this._bparser = ignoreData;
+              return;
+            }
+            // We saw something other than '-', so put the dash we consumed
+            // "back"
+            const writecb = this._writecb;
+            this._writecb = noop;
+            ssCb(false, BUF_DASH, 0, 1, false);
+            this._writecb = writecb;
+          } else if (matchPostBoundary === 3) {
+            matchPostBoundary = 0;
+            if (data[start] === 10/* '\n' */) {
+              ++start;
+              if (parts >= partsLimit)
+                break;
+              // Prepare the header parser
+              this._hparser = hparser;
+              if (start === end)
+                break;
+              // Process the remaining data as a header
+              continue retrydata;
+            } else {
+              // We saw something other than LF, so put the CR we consumed
+              // "back"
+              const writecb = this._writecb;
+              this._writecb = noop;
+              ssCb(false, BUF_CR, 0, 1, false);
+              this._writecb = writecb;
+            }
+          }
+        }
+
+        if (!skipPart) {
+          if (this._fileStream) {
+            let chunk;
+            const actualLen = Math.min(end - start, fileSizeLimit - fileSize);
+            if (!isDataSafe) {
+              chunk = Buffer.allocUnsafe(actualLen);
+              data.copy(chunk, 0, start, start + actualLen);
+            } else {
+              chunk = data.slice(start, start + actualLen);
+            }
+
+            fileSize += chunk.length;
+            if (fileSize === fileSizeLimit) {
+              if (chunk.length > 0)
+                this._fileStream.push(chunk);
+              this._fileStream.emit('limit');
+              this._fileStream.truncated = true;
+              skipPart = true;
+            } else if (!this._fileStream.push(chunk)) {
+              if (this._writecb)
+                this._fileStream._readcb = this._writecb;
+              this._writecb = null;
+            }
+          } else if (field !== undefined) {
+            let chunk;
+            const actualLen = Math.min(
+              end - start,
+              fieldSizeLimit - fieldSize
+            );
+            if (!isDataSafe) {
+              chunk = Buffer.allocUnsafe(actualLen);
+              data.copy(chunk, 0, start, start + actualLen);
+            } else {
+              chunk = data.slice(start, start + actualLen);
+            }
+
+            fieldSize += actualLen;
+            field.push(chunk);
+            if (fieldSize === fieldSizeLimit) {
+              skipPart = true;
+              partTruncated = true;
+            }
+          }
+        }
+
+        break;
+      }
+
+      if (isMatch) {
+        matchPostBoundary = 1;
+
+        if (this._fileStream) {
+          // End the active file stream if the previous part was a file
+          this._fileStream.push(null);
+          this._fileStream = null;
+        } else if (field !== undefined) {
+          let data;
+          switch (field.length) {
+            case 0:
+              data = '';
+              break;
+            case 1:
+              data = convertToUTF8(field[0], partCharset, 0);
+              break;
+            default:
+              data = convertToUTF8(
+                Buffer.concat(field, fieldSize),
+                partCharset,
+                0
+              );
+          }
+          field = undefined;
+          fieldSize = 0;
+          this.emit(
+            'field',
+            partName,
+            data,
+            { nameTruncated: false,
+              valueTruncated: partTruncated,
+              encoding: partEncoding,
+              mimeType: partType }
+          );
+        }
+
+        if (++parts === partsLimit)
+          this.emit('partsLimit');
+      }
+    };
+    this._bparser = new StreamSearch(`\r\n--${boundary}`, ssCb);
+
+    this._writecb = null;
+    this._finalcb = null;
+
+    // Just in case there is no preamble
+    this.write(BUF_CRLF);
+  }
+
+  static detect(conType) {
+    return (conType.type === 'multipart' && conType.subtype === 'form-data');
+  }
+
+  _write(chunk, enc, cb) {
+    this._writecb = cb;
+    this._bparser.push(chunk, 0);
+    if (this._writecb)
+      callAndUnsetCb(this);
+  }
+
+  _destroy(err, cb) {
+    this._hparser = null;
+    this._bparser = ignoreData;
+    if (!err)
+      err = checkEndState(this);
+    const fileStream = this._fileStream;
+    if (fileStream) {
+      this._fileStream = null;
+      fileStream.destroy(err);
+    }
+    cb(err);
+  }
+
+  _final(cb) {
+    this._bparser.destroy();
+    if (!this._complete)
+      return cb(new Error('Unexpected end of form'));
+    if (this._fileEndsLeft)
+      this._finalcb = finalcb.bind(null, this, cb);
+    else
+      finalcb(this, cb);
+  }
+}
+
+function finalcb(self, cb, err) {
+  if (err)
+    return cb(err);
+  err = checkEndState(self);
+  cb(err);
+}
+
+function checkEndState(self) {
+  if (self._hparser)
+    return new Error('Malformed part header');
+  const fileStream = self._fileStream;
+  if (fileStream) {
+    self._fileStream = null;
+    fileStream.destroy(new Error('Unexpected end of file'));
+  }
+  if (!self._complete)
+    return new Error('Unexpected end of form');
+}
+
+const TOKEN = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+];
+
+const FIELD_VCHAR = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+];
+
+module.exports = Multipart;
diff --git a/node_modules/busboy/lib/types/urlencoded.js b/node_modules/busboy/lib/types/urlencoded.js
new file mode 100644
index 0000000..5c463a2
--- /dev/null
+++ b/node_modules/busboy/lib/types/urlencoded.js
@@ -0,0 +1,350 @@
+'use strict';
+
+const { Writable } = require('stream');
+
+const { getDecoder } = require('../utils.js');
+
+class URLEncoded extends Writable {
+  constructor(cfg) {
+    const streamOpts = {
+      autoDestroy: true,
+      emitClose: true,
+      highWaterMark: (typeof cfg.highWaterMark === 'number'
+                      ? cfg.highWaterMark
+                      : undefined),
+    };
+    super(streamOpts);
+
+    let charset = (cfg.defCharset || 'utf8');
+    if (cfg.conType.params && typeof cfg.conType.params.charset === 'string')
+      charset = cfg.conType.params.charset;
+
+    this.charset = charset;
+
+    const limits = cfg.limits;
+    this.fieldSizeLimit = (limits && typeof limits.fieldSize === 'number'
+                           ? limits.fieldSize
+                           : 1 * 1024 * 1024);
+    this.fieldsLimit = (limits && typeof limits.fields === 'number'
+                        ? limits.fields
+                        : Infinity);
+    this.fieldNameSizeLimit = (
+      limits && typeof limits.fieldNameSize === 'number'
+      ? limits.fieldNameSize
+      : 100
+    );
+
+    this._inKey = true;
+    this._keyTrunc = false;
+    this._valTrunc = false;
+    this._bytesKey = 0;
+    this._bytesVal = 0;
+    this._fields = 0;
+    this._key = '';
+    this._val = '';
+    this._byte = -2;
+    this._lastPos = 0;
+    this._encode = 0;
+    this._decoder = getDecoder(charset);
+  }
+
+  static detect(conType) {
+    return (conType.type === 'application'
+            && conType.subtype === 'x-www-form-urlencoded');
+  }
+
+  _write(chunk, enc, cb) {
+    if (this._fields >= this.fieldsLimit)
+      return cb();
+
+    let i = 0;
+    const len = chunk.length;
+    this._lastPos = 0;
+
+    // Check if we last ended mid-percent-encoded byte
+    if (this._byte !== -2) {
+      i = readPctEnc(this, chunk, i, len);
+      if (i === -1)
+        return cb(new Error('Malformed urlencoded form'));
+      if (i >= len)
+        return cb();
+      if (this._inKey)
+        ++this._bytesKey;
+      else
+        ++this._bytesVal;
+    }
+
+main:
+    while (i < len) {
+      if (this._inKey) {
+        // Parsing key
+
+        i = skipKeyBytes(this, chunk, i, len);
+
+        while (i < len) {
+          switch (chunk[i]) {
+            case 61: // '='
+              if (this._lastPos < i)
+                this._key += chunk.latin1Slice(this._lastPos, i);
+              this._lastPos = ++i;
+              this._key = this._decoder(this._key, this._encode);
+              this._encode = 0;
+              this._inKey = false;
+              continue main;
+            case 38: // '&'
+              if (this._lastPos < i)
+                this._key += chunk.latin1Slice(this._lastPos, i);
+              this._lastPos = ++i;
+              this._key = this._decoder(this._key, this._encode);
+              this._encode = 0;
+              if (this._bytesKey > 0) {
+                this.emit(
+                  'field',
+                  this._key,
+                  '',
+                  { nameTruncated: this._keyTrunc,
+                    valueTruncated: false,
+                    encoding: this.charset,
+                    mimeType: 'text/plain' }
+                );
+              }
+              this._key = '';
+              this._val = '';
+              this._keyTrunc = false;
+              this._valTrunc = false;
+              this._bytesKey = 0;
+              this._bytesVal = 0;
+              if (++this._fields >= this.fieldsLimit) {
+                this.emit('fieldsLimit');
+                return cb();
+              }
+              continue;
+            case 43: // '+'
+              if (this._lastPos < i)
+                this._key += chunk.latin1Slice(this._lastPos, i);
+              this._key += ' ';
+              this._lastPos = i + 1;
+              break;
+            case 37: // '%'
+              if (this._encode === 0)
+                this._encode = 1;
+              if (this._lastPos < i)
+                this._key += chunk.latin1Slice(this._lastPos, i);
+              this._lastPos = i + 1;
+              this._byte = -1;
+              i = readPctEnc(this, chunk, i + 1, len);
+              if (i === -1)
+                return cb(new Error('Malformed urlencoded form'));
+              if (i >= len)
+                return cb();
+              ++this._bytesKey;
+              i = skipKeyBytes(this, chunk, i, len);
+              continue;
+          }
+          ++i;
+          ++this._bytesKey;
+          i = skipKeyBytes(this, chunk, i, len);
+        }
+        if (this._lastPos < i)
+          this._key += chunk.latin1Slice(this._lastPos, i);
+      } else {
+        // Parsing value
+
+        i = skipValBytes(this, chunk, i, len);
+
+        while (i < len) {
+          switch (chunk[i]) {
+            case 38: // '&'
+              if (this._lastPos < i)
+                this._val += chunk.latin1Slice(this._lastPos, i);
+              this._lastPos = ++i;
+              this._inKey = true;
+              this._val = this._decoder(this._val, this._encode);
+              this._encode = 0;
+              if (this._bytesKey > 0 || this._bytesVal > 0) {
+                this.emit(
+                  'field',
+                  this._key,
+                  this._val,
+                  { nameTruncated: this._keyTrunc,
+                    valueTruncated: this._valTrunc,
+                    encoding: this.charset,
+                    mimeType: 'text/plain' }
+                );
+              }
+              this._key = '';
+              this._val = '';
+              this._keyTrunc = false;
+              this._valTrunc = false;
+              this._bytesKey = 0;
+              this._bytesVal = 0;
+              if (++this._fields >= this.fieldsLimit) {
+                this.emit('fieldsLimit');
+                return cb();
+              }
+              continue main;
+            case 43: // '+'
+              if (this._lastPos < i)
+                this._val += chunk.latin1Slice(this._lastPos, i);
+              this._val += ' ';
+              this._lastPos = i + 1;
+              break;
+            case 37: // '%'
+              if (this._encode === 0)
+                this._encode = 1;
+              if (this._lastPos < i)
+                this._val += chunk.latin1Slice(this._lastPos, i);
+              this._lastPos = i + 1;
+              this._byte = -1;
+              i = readPctEnc(this, chunk, i + 1, len);
+              if (i === -1)
+                return cb(new Error('Malformed urlencoded form'));
+              if (i >= len)
+                return cb();
+              ++this._bytesVal;
+              i = skipValBytes(this, chunk, i, len);
+              continue;
+          }
+          ++i;
+          ++this._bytesVal;
+          i = skipValBytes(this, chunk, i, len);
+        }
+        if (this._lastPos < i)
+          this._val += chunk.latin1Slice(this._lastPos, i);
+      }
+    }
+
+    cb();
+  }
+
+  _final(cb) {
+    if (this._byte !== -2)
+      return cb(new Error('Malformed urlencoded form'));
+    if (!this._inKey || this._bytesKey > 0 || this._bytesVal > 0) {
+      if (this._inKey)
+        this._key = this._decoder(this._key, this._encode);
+      else
+        this._val = this._decoder(this._val, this._encode);
+      this.emit(
+        'field',
+        this._key,
+        this._val,
+        { nameTruncated: this._keyTrunc,
+          valueTruncated: this._valTrunc,
+          encoding: this.charset,
+          mimeType: 'text/plain' }
+      );
+    }
+    cb();
+  }
+}
+
+function readPctEnc(self, chunk, pos, len) {
+  if (pos >= len)
+    return len;
+
+  if (self._byte === -1) {
+    // We saw a '%' but no hex characters yet
+    const hexUpper = HEX_VALUES[chunk[pos++]];
+    if (hexUpper === -1)
+      return -1;
+
+    if (hexUpper >= 8)
+      self._encode = 2; // Indicate high bits detected
+
+    if (pos < len) {
+      // Both hex characters are in this chunk
+      const hexLower = HEX_VALUES[chunk[pos++]];
+      if (hexLower === -1)
+        return -1;
+
+      if (self._inKey)
+        self._key += String.fromCharCode((hexUpper << 4) + hexLower);
+      else
+        self._val += String.fromCharCode((hexUpper << 4) + hexLower);
+
+      self._byte = -2;
+      self._lastPos = pos;
+    } else {
+      // Only one hex character was available in this chunk
+      self._byte = hexUpper;
+    }
+  } else {
+    // We saw only one hex character so far
+    const hexLower = HEX_VALUES[chunk[pos++]];
+    if (hexLower === -1)
+      return -1;
+
+    if (self._inKey)
+      self._key += String.fromCharCode((self._byte << 4) + hexLower);
+    else
+      self._val += String.fromCharCode((self._byte << 4) + hexLower);
+
+    self._byte = -2;
+    self._lastPos = pos;
+  }
+
+  return pos;
+}
+
+function skipKeyBytes(self, chunk, pos, len) {
+  // Skip bytes if we've truncated
+  if (self._bytesKey > self.fieldNameSizeLimit) {
+    if (!self._keyTrunc) {
+      if (self._lastPos < pos)
+        self._key += chunk.latin1Slice(self._lastPos, pos - 1);
+    }
+    self._keyTrunc = true;
+    for (; pos < len; ++pos) {
+      const code = chunk[pos];
+      if (code === 61/* '=' */ || code === 38/* '&' */)
+        break;
+      ++self._bytesKey;
+    }
+    self._lastPos = pos;
+  }
+
+  return pos;
+}
+
+function skipValBytes(self, chunk, pos, len) {
+  // Skip bytes if we've truncated
+  if (self._bytesVal > self.fieldSizeLimit) {
+    if (!self._valTrunc) {
+      if (self._lastPos < pos)
+        self._val += chunk.latin1Slice(self._lastPos, pos - 1);
+    }
+    self._valTrunc = true;
+    for (; pos < len; ++pos) {
+      if (chunk[pos] === 38/* '&' */)
+        break;
+      ++self._bytesVal;
+    }
+    self._lastPos = pos;
+  }
+
+  return pos;
+}
+
+/* eslint-disable no-multi-spaces */
+const HEX_VALUES = [
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+   0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1,
+  -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+];
+/* eslint-enable no-multi-spaces */
+
+module.exports = URLEncoded;
diff --git a/node_modules/busboy/lib/utils.js b/node_modules/busboy/lib/utils.js
new file mode 100644
index 0000000..8274f6c
--- /dev/null
+++ b/node_modules/busboy/lib/utils.js
@@ -0,0 +1,596 @@
+'use strict';
+
+function parseContentType(str) {
+  if (str.length === 0)
+    return;
+
+  const params = Object.create(null);
+  let i = 0;
+
+  // Parse type
+  for (; i < str.length; ++i) {
+    const code = str.charCodeAt(i);
+    if (TOKEN[code] !== 1) {
+      if (code !== 47/* '/' */ || i === 0)
+        return;
+      break;
+    }
+  }
+  // Check for type without subtype
+  if (i === str.length)
+    return;
+
+  const type = str.slice(0, i).toLowerCase();
+
+  // Parse subtype
+  const subtypeStart = ++i;
+  for (; i < str.length; ++i) {
+    const code = str.charCodeAt(i);
+    if (TOKEN[code] !== 1) {
+      // Make sure we have a subtype
+      if (i === subtypeStart)
+        return;
+
+      if (parseContentTypeParams(str, i, params) === undefined)
+        return;
+      break;
+    }
+  }
+  // Make sure we have a subtype
+  if (i === subtypeStart)
+    return;
+
+  const subtype = str.slice(subtypeStart, i).toLowerCase();
+
+  return { type, subtype, params };
+}
+
+function parseContentTypeParams(str, i, params) {
+  while (i < str.length) {
+    // Consume whitespace
+    for (; i < str.length; ++i) {
+      const code = str.charCodeAt(i);
+      if (code !== 32/* ' ' */ && code !== 9/* '\t' */)
+        break;
+    }
+
+    // Ended on whitespace
+    if (i === str.length)
+      break;
+
+    // Check for malformed parameter
+    if (str.charCodeAt(i++) !== 59/* ';' */)
+      return;
+
+    // Consume whitespace
+    for (; i < str.length; ++i) {
+      const code = str.charCodeAt(i);
+      if (code !== 32/* ' ' */ && code !== 9/* '\t' */)
+        break;
+    }
+
+    // Ended on whitespace (malformed)
+    if (i === str.length)
+      return;
+
+    let name;
+    const nameStart = i;
+    // Parse parameter name
+    for (; i < str.length; ++i) {
+      const code = str.charCodeAt(i);
+      if (TOKEN[code] !== 1) {
+        if (code !== 61/* '=' */)
+          return;
+        break;
+      }
+    }
+
+    // No value (malformed)
+    if (i === str.length)
+      return;
+
+    name = str.slice(nameStart, i);
+    ++i; // Skip over '='
+
+    // No value (malformed)
+    if (i === str.length)
+      return;
+
+    let value = '';
+    let valueStart;
+    if (str.charCodeAt(i) === 34/* '"' */) {
+      valueStart = ++i;
+      let escaping = false;
+      // Parse quoted value
+      for (; i < str.length; ++i) {
+        const code = str.charCodeAt(i);
+        if (code === 92/* '\\' */) {
+          if (escaping) {
+            valueStart = i;
+            escaping = false;
+          } else {
+            value += str.slice(valueStart, i);
+            escaping = true;
+          }
+          continue;
+        }
+        if (code === 34/* '"' */) {
+          if (escaping) {
+            valueStart = i;
+            escaping = false;
+            continue;
+          }
+          value += str.slice(valueStart, i);
+          break;
+        }
+        if (escaping) {
+          valueStart = i - 1;
+          escaping = false;
+        }
+        // Invalid unescaped quoted character (malformed)
+        if (QDTEXT[code] !== 1)
+          return;
+      }
+
+      // No end quote (malformed)
+      if (i === str.length)
+        return;
+
+      ++i; // Skip over double quote
+    } else {
+      valueStart = i;
+      // Parse unquoted value
+      for (; i < str.length; ++i) {
+        const code = str.charCodeAt(i);
+        if (TOKEN[code] !== 1) {
+          // No value (malformed)
+          if (i === valueStart)
+            return;
+          break;
+        }
+      }
+      value = str.slice(valueStart, i);
+    }
+
+    name = name.toLowerCase();
+    if (params[name] === undefined)
+      params[name] = value;
+  }
+
+  return params;
+}
+
+function parseDisposition(str, defDecoder) {
+  if (str.length === 0)
+    return;
+
+  const params = Object.create(null);
+  let i = 0;
+
+  for (; i < str.length; ++i) {
+    const code = str.charCodeAt(i);
+    if (TOKEN[code] !== 1) {
+      if (parseDispositionParams(str, i, params, defDecoder) === undefined)
+        return;
+      break;
+    }
+  }
+
+  const type = str.slice(0, i).toLowerCase();
+
+  return { type, params };
+}
+
+function parseDispositionParams(str, i, params, defDecoder) {
+  while (i < str.length) {
+    // Consume whitespace
+    for (; i < str.length; ++i) {
+      const code = str.charCodeAt(i);
+      if (code !== 32/* ' ' */ && code !== 9/* '\t' */)
+        break;
+    }
+
+    // Ended on whitespace
+    if (i === str.length)
+      break;
+
+    // Check for malformed parameter
+    if (str.charCodeAt(i++) !== 59/* ';' */)
+      return;
+
+    // Consume whitespace
+    for (; i < str.length; ++i) {
+      const code = str.charCodeAt(i);
+      if (code !== 32/* ' ' */ && code !== 9/* '\t' */)
+        break;
+    }
+
+    // Ended on whitespace (malformed)
+    if (i === str.length)
+      return;
+
+    let name;
+    const nameStart = i;
+    // Parse parameter name
+    for (; i < str.length; ++i) {
+      const code = str.charCodeAt(i);
+      if (TOKEN[code] !== 1) {
+        if (code === 61/* '=' */)
+          break;
+        return;
+      }
+    }
+
+    // No value (malformed)
+    if (i === str.length)
+      return;
+
+    let value = '';
+    let valueStart;
+    let charset;
+    //~ let lang;
+    name = str.slice(nameStart, i);
+    if (name.charCodeAt(name.length - 1) === 42/* '*' */) {
+      // Extended value
+
+      const charsetStart = ++i;
+      // Parse charset name
+      for (; i < str.length; ++i) {
+        const code = str.charCodeAt(i);
+        if (CHARSET[code] !== 1) {
+          if (code !== 39/* '\'' */)
+            return;
+          break;
+        }
+      }
+
+      // Incomplete charset (malformed)
+      if (i === str.length)
+        return;
+
+      charset = str.slice(charsetStart, i);
+      ++i; // Skip over the '\''
+
+      //~ const langStart = ++i;
+      // Parse language name
+      for (; i < str.length; ++i) {
+        const code = str.charCodeAt(i);
+        if (code === 39/* '\'' */)
+          break;
+      }
+
+      // Incomplete language (malformed)
+      if (i === str.length)
+        return;
+
+      //~ lang = str.slice(langStart, i);
+      ++i; // Skip over the '\''
+
+      // No value (malformed)
+      if (i === str.length)
+        return;
+
+      valueStart = i;
+
+      let encode = 0;
+      // Parse value
+      for (; i < str.length; ++i) {
+        const code = str.charCodeAt(i);
+        if (EXTENDED_VALUE[code] !== 1) {
+          if (code === 37/* '%' */) {
+            let hexUpper;
+            let hexLower;
+            if (i + 2 < str.length
+                && (hexUpper = HEX_VALUES[str.charCodeAt(i + 1)]) !== -1
+                && (hexLower = HEX_VALUES[str.charCodeAt(i + 2)]) !== -1) {
+              const byteVal = (hexUpper << 4) + hexLower;
+              value += str.slice(valueStart, i);
+              value += String.fromCharCode(byteVal);
+              i += 2;
+              valueStart = i + 1;
+              if (byteVal >= 128)
+                encode = 2;
+              else if (encode === 0)
+                encode = 1;
+              continue;
+            }
+            // '%' disallowed in non-percent encoded contexts (malformed)
+            return;
+          }
+          break;
+        }
+      }
+
+      value += str.slice(valueStart, i);
+      value = convertToUTF8(value, charset, encode);
+      if (value === undefined)
+        return;
+    } else {
+      // Non-extended value
+
+      ++i; // Skip over '='
+
+      // No value (malformed)
+      if (i === str.length)
+        return;
+
+      if (str.charCodeAt(i) === 34/* '"' */) {
+        valueStart = ++i;
+        let escaping = false;
+        // Parse quoted value
+        for (; i < str.length; ++i) {
+          const code = str.charCodeAt(i);
+          if (code === 92/* '\\' */) {
+            if (escaping) {
+              valueStart = i;
+              escaping = false;
+            } else {
+              value += str.slice(valueStart, i);
+              escaping = true;
+            }
+            continue;
+          }
+          if (code === 34/* '"' */) {
+            if (escaping) {
+              valueStart = i;
+              escaping = false;
+              continue;
+            }
+            value += str.slice(valueStart, i);
+            break;
+          }
+          if (escaping) {
+            valueStart = i - 1;
+            escaping = false;
+          }
+          // Invalid unescaped quoted character (malformed)
+          if (QDTEXT[code] !== 1)
+            return;
+        }
+
+        // No end quote (malformed)
+        if (i === str.length)
+          return;
+
+        ++i; // Skip over double quote
+      } else {
+        valueStart = i;
+        // Parse unquoted value
+        for (; i < str.length; ++i) {
+          const code = str.charCodeAt(i);
+          if (TOKEN[code] !== 1) {
+            // No value (malformed)
+            if (i === valueStart)
+              return;
+            break;
+          }
+        }
+        value = str.slice(valueStart, i);
+      }
+
+      value = defDecoder(value, 2);
+      if (value === undefined)
+        return;
+    }
+
+    name = name.toLowerCase();
+    if (params[name] === undefined)
+      params[name] = value;
+  }
+
+  return params;
+}
+
+function getDecoder(charset) {
+  let lc;
+  while (true) {
+    switch (charset) {
+      case 'utf-8':
+      case 'utf8':
+        return decoders.utf8;
+      case 'latin1':
+      case 'ascii': // TODO: Make these a separate, strict decoder?
+      case 'us-ascii':
+      case 'iso-8859-1':
+      case 'iso8859-1':
+      case 'iso88591':
+      case 'iso_8859-1':
+      case 'windows-1252':
+      case 'iso_8859-1:1987':
+      case 'cp1252':
+      case 'x-cp1252':
+        return decoders.latin1;
+      case 'utf16le':
+      case 'utf-16le':
+      case 'ucs2':
+      case 'ucs-2':
+        return decoders.utf16le;
+      case 'base64':
+        return decoders.base64;
+      default:
+        if (lc === undefined) {
+          lc = true;
+          charset = charset.toLowerCase();
+          continue;
+        }
+        return decoders.other.bind(charset);
+    }
+  }
+}
+
+const decoders = {
+  utf8: (data, hint) => {
+    if (data.length === 0)
+      return '';
+    if (typeof data === 'string') {
+      // If `data` never had any percent-encoded bytes or never had any that
+      // were outside of the ASCII range, then we can safely just return the
+      // input since UTF-8 is ASCII compatible
+      if (hint < 2)
+        return data;
+
+      data = Buffer.from(data, 'latin1');
+    }
+    return data.utf8Slice(0, data.length);
+  },
+
+  latin1: (data, hint) => {
+    if (data.length === 0)
+      return '';
+    if (typeof data === 'string')
+      return data;
+    return data.latin1Slice(0, data.length);
+  },
+
+  utf16le: (data, hint) => {
+    if (data.length === 0)
+      return '';
+    if (typeof data === 'string')
+      data = Buffer.from(data, 'latin1');
+    return data.ucs2Slice(0, data.length);
+  },
+
+  base64: (data, hint) => {
+    if (data.length === 0)
+      return '';
+    if (typeof data === 'string')
+      data = Buffer.from(data, 'latin1');
+    return data.base64Slice(0, data.length);
+  },
+
+  other: (data, hint) => {
+    if (data.length === 0)
+      return '';
+    if (typeof data === 'string')
+      data = Buffer.from(data, 'latin1');
+    try {
+      const decoder = new TextDecoder(this);
+      return decoder.decode(data);
+    } catch {}
+  },
+};
+
+function convertToUTF8(data, charset, hint) {
+  const decode = getDecoder(charset);
+  if (decode)
+    return decode(data, hint);
+}
+
+function basename(path) {
+  if (typeof path !== 'string')
+    return '';
+  for (let i = path.length - 1; i >= 0; --i) {
+    switch (path.charCodeAt(i)) {
+      case 0x2F: // '/'
+      case 0x5C: // '\'
+        path = path.slice(i + 1);
+        return (path === '..' || path === '.' ? '' : path);
+    }
+  }
+  return (path === '..' || path === '.' ? '' : path);
+}
+
+const TOKEN = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+];
+
+const QDTEXT = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+];
+
+const CHARSET = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+];
+
+const EXTENDED_VALUE = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+];
+
+/* eslint-disable no-multi-spaces */
+const HEX_VALUES = [
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+   0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1,
+  -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+];
+/* eslint-enable no-multi-spaces */
+
+module.exports = {
+  basename,
+  convertToUTF8,
+  getDecoder,
+  parseContentType,
+  parseDisposition,
+};