text:  /*
   * libwebsockets - small server side websockets and web server implementation
   *
   * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to
   * deal in the Software without restriction, including without limitation the
   * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   * sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   *
   * This is included from private-lib-core.h if LWS_ROLE_WS
   */
  
  #if defined(LWS_WITH_ZLIB)
  #if defined(LWS_WITH_MINIZ)
  #include <miniz.h>
  #else
  #include <zlib.h>
  #endif
  #endif
  
  extern const struct lws_role_ops role_ops_cgi;
  
  #define lwsi_role_cgi(wsi) (wsi->role_ops == &role_ops_cgi)
  
  #define LWS_HTTP_CHUNK_HDR_SIZE 16
  
  enum {
  	SIGNIFICANT_HDR_CONTENT_LENGTH,		/* numeric */
  	SIGNIFICANT_HDR_LOCATION,
  	SIGNIFICANT_HDR_STATUS,			/* numeric */
  	SIGNIFICANT_HDR_TRANSFER_ENCODING,
  	SIGNIFICANT_HDR_CONTENT_ENCODING_GZIP,
  
  	SIGNIFICANT_HDR_COUNT
  };
  
  struct lws;
  
  /* wsi who is master of the cgi points to an lws_cgi */
  
  struct lws_cgi {
  	struct lws_cgi *cgi_list;
  	struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
  	struct lws *wsi; /* owner */
  	unsigned char *headers_buf;
  	unsigned char *headers_start;
  	unsigned char *headers_pos;
  	unsigned char *headers_dumped;
  	unsigned char *headers_end;
  
  	char summary[128];
  #if defined(LWS_WITH_ZLIB)
  	z_stream inflate;
  	uint8_t inflate_buf[1024];
  #endif
  
  	lws_filepos_t post_in_expected;
  	lws_filepos_t content_length;
  	lws_filepos_t content_length_seen;
  
  	int pipe_fds[3][2];
  	int match[SIGNIFICANT_HDR_COUNT];
  	char l[12];
  	int pid;
  	int response_code;
  	int lp;
  
  	unsigned char being_closed:1;
  	unsigned char explicitly_chunked:1;
  	unsigned char cgi_transaction_over:1;
  	unsigned char implied_chunked:1;
  	unsigned char gzip_inflate:1;
  	unsigned char gzip_init:1;
  
  	unsigned char chunked_grace;
  };
  