lib/roles/cgi/private.h

   1 /*
   2  * libwebsockets - small server side websockets and web server implementation
   3  *
   4  * Copyright (C) 2010 - 2018 Andy Green <andy@warmcat.com>
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public
   8  *  License as published by the Free Software Foundation:
   9  *  version 2.1 of the License.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  19  *  MA  02110-1301  USA
  20  *
  21  *  This is included from core/private.h if LWS_ROLE_WS
  22  */
  23
  24 #if defined(LWS_WITH_ZLIB)
  25 #if defined(LWS_WITH_MINIZ)
  26 #include <miniz.h>
  27 #else
  28 #include <zlib.h>
  29 #endif
  30 #endif
  31
  32 extern struct lws_role_ops role_ops_cgi;
  33
  34 #define lwsi_role_cgi(wsi) (wsi->role_ops == &role_ops_cgi)
  35
  36 #define LWS_HTTP_CHUNK_HDR_SIZE 16
  37
  38 enum {
  39         SIGNIFICANT_HDR_CONTENT_LENGTH,         /* numeric */
  40         SIGNIFICANT_HDR_LOCATION,
  41         SIGNIFICANT_HDR_STATUS,                 /* numeric */
  42         SIGNIFICANT_HDR_TRANSFER_ENCODING,
  43         SIGNIFICANT_HDR_CONTENT_ENCODING_GZIP,
  44
  45         SIGNIFICANT_HDR_COUNT
  46 };
  47
  48 struct lws;
  49
  50 /* wsi who is master of the cgi points to an lws_cgi */
  51
  52 struct lws_cgi {
  53         struct lws_cgi *cgi_list;
  54         struct lws *stdwsi[3]; /* points to the associated stdin/out/err wsis */
  55         struct lws *wsi; /* owner */
  56         unsigned char *headers_buf;
  57         unsigned char *headers_start;
  58         unsigned char *headers_pos;
  59         unsigned char *headers_dumped;
  60         unsigned char *headers_end;
  61
  62         char summary[128];
  63 #if defined(LWS_WITH_ZLIB)
  64         z_stream inflate;
  65         uint8_t inflate_buf[1024];
  66 #endif
  67
  68         lws_filepos_t post_in_expected;
  69         lws_filepos_t content_length;
  70         lws_filepos_t content_length_seen;
  71
  72         int pipe_fds[3][2];
  73         int match[SIGNIFICANT_HDR_COUNT];
  74         char l[12];
  75         int pid;
  76         int response_code;
  77         int lp;
  78
  79         unsigned char being_closed:1;
  80         unsigned char explicitly_chunked:1;
  81         unsigned char cgi_transaction_over:1;
  82         unsigned char implied_chunked:1;
  83         unsigned char gzip_inflate:1;
  84         unsigned char gzip_init:1;
  85
  86         unsigned char chunked_grace;
  87 };