libmicrohttpd2

HTTP server C library (MHD 2.x, alpha)
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stream_get_info.c (4338B)

      1 /* SPDX-License-Identifier: LGPL-2.1-or-later OR (GPL-2.0-or-later WITH eCos-exception-2.0) */
      2 /*
      3   This file is part of GNU libmicrohttpd.
      4   Copyright (C) 2025 Evgeny Grin (Karlson2k)
      5 
      6   GNU libmicrohttpd 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; either
      9   version 2.1 of the License, or (at your option) any later version.
     10 
     11   GNU libmicrohttpd 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   Alternatively, you can redistribute GNU libmicrohttpd and/or
     17   modify it under the terms of the GNU General Public License as
     18   published by the Free Software Foundation; either version 2 of
     19   the License, or (at your option) any later version, together
     20   with the eCos exception, as follows:
     21 
     22     As a special exception, if other files instantiate templates or
     23     use macros or inline functions from this file, or you compile this
     24     file and link it with other works to produce a work based on this
     25     file, this file does not by itself cause the resulting work to be
     26     covered by the GNU General Public License. However the source code
     27     for this file must still be made available in accordance with
     28     section (3) of the GNU General Public License v2.
     29 
     30     This exception does not invalidate any other reasons why a work
     31     based on this file might be covered by the GNU General Public
     32     License.
     33 
     34   You should have received copies of the GNU Lesser General Public
     35   License and the GNU General Public License along with this library;
     36   if not, see <https://www.gnu.org/licenses/>.
     37 */
     38 
     39 /**
     40  * @file src/mhd2/stream_get_info.c
     41  * @brief  The implementation of MHD_stream_get_info_*() functions
     42  * @author Karlson2k (Evgeny Grin)
     43  */
     44 
     45 #include "mhd_sys_options.h"
     46 
     47 #include "mhd_unreachable.h"
     48 #include "mhd_cntnr_ptr.h"
     49 
     50 #include "mhd_stream.h"
     51 #include "mhd_connection.h"
     52 
     53 #include "daemon_funcs.h"
     54 
     55 #include "mhd_public_api.h"
     56 
     57 
     58 MHD_EXTERN_ MHD_FN_MUST_CHECK_RESULT_
     59 MHD_FN_PAR_NONNULL_ (1)
     60 MHD_FN_PAR_NONNULL_ (3) MHD_FN_PAR_OUT_ (3) enum MHD_StatusCode
     61 MHD_stream_get_info_fixed_sz (
     62   struct MHD_Stream *MHD_RESTRICT stream,
     63   enum MHD_StreamInfoFixedType info_type,
     64   union MHD_StreamInfoFixedData *MHD_RESTRICT output_buf,
     65   size_t output_buf_size)
     66 {
     67   switch (info_type)
     68   {
     69   case MHD_STREAM_INFO_FIXED_DAEMON:
     70     if (sizeof(output_buf->v_daemon) > output_buf_size)
     71       return MHD_SC_INFO_GET_BUFF_TOO_SMALL;
     72     output_buf->v_daemon =
     73       mhd_daemon_get_master_daemon (mhd_CNTNR_PTR (stream, \
     74                                                    struct MHD_Connection, \
     75                                                    h1_stream)->daemon);
     76     return MHD_SC_OK;
     77   case MHD_STREAM_INFO_FIXED_CONNECTION:
     78     if (sizeof(output_buf->v_connection) > output_buf_size)
     79       return MHD_SC_INFO_GET_BUFF_TOO_SMALL;
     80     output_buf->v_connection = mhd_CNTNR_PTR (stream, \
     81                                               struct MHD_Connection, \
     82                                               h1_stream);
     83     return MHD_SC_OK;
     84 
     85   case MHD_STREAM_INFO_FIXED_SENTINEL:
     86   default:
     87     break;
     88   }
     89   return MHD_SC_INFO_GET_TYPE_UNKNOWN;
     90 }
     91 
     92 
     93 MHD_EXTERN_ MHD_FN_MUST_CHECK_RESULT_
     94 MHD_FN_PAR_NONNULL_ (1)
     95 MHD_FN_PAR_NONNULL_ (3) MHD_FN_PAR_OUT_ (3) enum MHD_StatusCode
     96 MHD_stream_get_info_dynamic_sz (
     97   struct MHD_Stream *MHD_RESTRICT stream,
     98   enum MHD_StreamInfoDynamicType info_type,
     99   union MHD_StreamInfoDynamicData *MHD_RESTRICT output_buf,
    100   size_t output_buf_size)
    101 {
    102   switch (info_type)
    103   {
    104   case MHD_STREAM_INFO_DYNAMIC_REQUEST:
    105     if (mhd_HTTP_STAGE_REQ_LINE_RECEIVED >
    106         mhd_CNTNR_PTR (stream, \
    107                        struct MHD_Connection, \
    108                        h1_stream)->stage)
    109       return MHD_SC_TOO_EARLY;
    110     if (sizeof(output_buf->v_request) > output_buf_size)
    111       return MHD_SC_INFO_GET_BUFF_TOO_SMALL;
    112     output_buf->v_request =
    113       &(mhd_CNTNR_PTR (stream, \
    114                        struct MHD_Connection, \
    115                        h1_stream)->rq);
    116     return MHD_SC_OK;
    117 
    118   case MHD_STREAM_INFO_DYNAMIC_SENTINEL:
    119   default:
    120     break;
    121   }
    122   return MHD_SC_INFO_GET_TYPE_UNKNOWN;
    123 }