1 files changed, 100 insertions, 0 deletions
diff --git a/g4f/Provider/npm/node_modules/@fastify/busboy/deps/dicer/lib/HeaderParser.js b/g4f/Provider/npm/node_modules/@fastify/busboy/deps/dicer/lib/HeaderParser.js
new file mode 100644
index 00000000..65f667b5
--- /dev/null
+++ b/g4f/Provider/npm/node_modules/@fastify/busboy/deps/dicer/lib/HeaderParser.js
@@ -0,0 +1,100 @@
+'use strict'
+
+const EventEmitter = require('node:events').EventEmitter
+const inherits = require('node:util').inherits
+const getLimit = require('../../../lib/utils/getLimit')
+
+const StreamSearch = require('../../streamsearch/sbmh')
+
+const B_DCRLF = Buffer.from('\r\n\r\n')
+const RE_CRLF = /\r\n/g
+const RE_HDR = /^([^:]+):[ \t]?([\x00-\xFF]+)?$/ // eslint-disable-line no-control-regex
+
+function HeaderParser (cfg) {
+  EventEmitter.call(this)
+
+  cfg = cfg || {}
+  const self = this
+  this.nread = 0
+  this.maxed = false
+  this.npairs = 0
+  this.maxHeaderPairs = getLimit(cfg, 'maxHeaderPairs', 2000)
+  this.maxHeaderSize = getLimit(cfg, 'maxHeaderSize', 80 * 1024)
+  this.buffer = ''
+  this.header = {}
+  this.finished = false
+  this.ss = new StreamSearch(B_DCRLF)
+  this.ss.on('info', function (isMatch, data, start, end) {
+    if (data && !self.maxed) {
+      if (self.nread + end - start >= self.maxHeaderSize) {
+        end = self.maxHeaderSize - self.nread + start
+        self.nread = self.maxHeaderSize
+        self.maxed = true
+      } else { self.nread += (end - start) }
+
+      self.buffer += data.toString('binary', start, end)
+    }
+    if (isMatch) { self._finish() }
+  })
+}
+inherits(HeaderParser, EventEmitter)
+
+HeaderParser.prototype.push = function (data) {
+  const r = this.ss.push(data)
+  if (this.finished) { return r }
+}
+
+HeaderParser.prototype.reset = function () {
+  this.finished = false
+  this.buffer = ''
+  this.header = {}
+  this.ss.reset()
+}
+
+HeaderParser.prototype._finish = function () {
+  if (this.buffer) { this._parseHeader() }
+  this.ss.matches = this.ss.maxMatches
+  const header = this.header
+  this.header = {}
+  this.buffer = ''
+  this.finished = true
+  this.nread = this.npairs = 0
+  this.maxed = false
+  this.emit('header', header)
+}
+
+HeaderParser.prototype._parseHeader = function () {
+  if (this.npairs === this.maxHeaderPairs) { return }
+
+  const lines = this.buffer.split(RE_CRLF)
+  const len = lines.length
+  let m, h
+
+  for (var i = 0; i < len; ++i) { // eslint-disable-line no-var
+    if (lines[i].length === 0) { continue }
+    if (lines[i][0] === '\t' || lines[i][0] === ' ') {
+      // folded header content
+      // RFC2822 says to just remove the CRLF and not the whitespace following
+      // it, so we follow the RFC and include the leading whitespace ...
+      if (h) {
+        this.header[h][this.header[h].length - 1] += lines[i]
+        continue
+      }
+    }
+
+    const posColon = lines[i].indexOf(':')
+    if (
+      posColon === -1 ||
+      posColon === 0
+    ) {
+      return
+    }
+    m = RE_HDR.exec(lines[i])
+    h = m[1].toLowerCase()
+    this.header[h] = this.header[h] || []
+    this.header[h].push((m[2] || ''))
+    if (++this.npairs === this.maxHeaderPairs) { break }
+  }
+}
+
+module.exports = HeaderParser