libmicrohttpd

HTTP/1.x server C library (MHD 1.x, stable)
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commit 337922f27f5f7368e0f3cb674acacbb23736d2be
parent 9181dd0a072670d61a2e6839f23d7e33165ca089
Author: Christian Grothoff <christian@grothoff.org>
Date:   Sun, 24 Aug 2008 18:20:40 +0000

example

Diffstat:
Msrc/examples/Makefile.am | 8+++++++-
Asrc/examples/refuse_post_example.c | 95+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 102 insertions(+), 1 deletion(-)

diff --git a/src/examples/Makefile.am b/src/examples/Makefile.am @@ -10,7 +10,8 @@ authorization_example \ minimal_example \ querystring_example \ fileserver_example \ -fileserver_example_external_select +fileserver_example_external_select \ +refuse_post_example if ENABLE_HTTPS noinst_PROGRAMS += https_server_example @@ -26,6 +27,11 @@ authorization_example_SOURCES = \ authorization_example_LDADD = \ $(top_builddir)/src/daemon/libmicrohttpd.la +refuse_post_example_SOURCES = \ + refuse_post_example.c +refuse_post_example_LDADD = \ + $(top_builddir)/src/daemon/libmicrohttpd.la + querystring_example_SOURCES = \ querystring_example.c querystring_example_LDADD = \ diff --git a/src/examples/refuse_post_example.c b/src/examples/refuse_post_example.c @@ -0,0 +1,95 @@ +/* + This file is part of libmicrohttpd + (C) 2007, 2008 Christian Grothoff (and other contributing authors) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +*/ +/** + * @file refuse_post_example.c + * @brief example for how to refuse a POST request properly + * @author Christian Grothoff and Sebastian Gerhardt + */ +#include "platform.h" +#include <microhttpd.h> + +const char* askpage = "<html><body>\n\ + Upload a file, please!<br>\n\ + <form action=\"/filepost\" method=\"post\" enctype=\"multipart/form-data\">\n\ + <input name=\"file\" type=\"file\">\n\ + <input type=\"submit\" value=\" Send \"></form>\n\ + </body></html>"; + +#define BUSYPAGE "<html><head><title>Webserver busy</title></head><body>We are too busy to process POSTs right now.</body></html>" + +static int +ahc_echo (void *cls, + struct MHD_Connection *connection, + const char *url, + const char *method, + const char *version, + const char *upload_data, unsigned int *upload_data_size, void **ptr) +{ + static int aptr; + const char *me = cls; + struct MHD_Response *response; + int ret; + + if ((0 != strcmp (method, "GET")) && (0 != strcmp (method, "POST"))) + return MHD_NO; /* unexpected method */ + + if (&aptr != *ptr) + { + *ptr = &aptr; + + /* always to busy for POST requests */ + if (0 == strcmp (method, "POST")) + { + response = MHD_create_response_from_data (strlen (BUSYPAGE), + (void *) BUSYPAGE, MHD_NO, MHD_NO); + ret = MHD_queue_response (connection, MHD_HTTP_SERVICE_UNAVAILABLE, response); + MHD_destroy_response (response); + return ret; + } + } + + *ptr = NULL; /* reset when done */ + response = MHD_create_response_from_data (strlen (me), + (void *) me, MHD_NO, MHD_NO); + ret = MHD_queue_response (connection, MHD_HTTP_OK, response); + MHD_destroy_response (response); + return ret; +} + +int +main (int argc, char *const *argv) +{ + struct MHD_Daemon *d; + + if (argc != 3) + { + printf ("%s PORT SECONDS-TO-RUN\n", argv[0]); + return 1; + } + d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_DEBUG, + atoi (argv[1]), + NULL, NULL, &ahc_echo, (void *) askpage, MHD_OPTION_END); + if (d == NULL) + return 1; + sleep (atoi (argv[2])); + MHD_stop_daemon (d); + return 0; +} + +/* end of refuse_post_example.c */