/*      $NetBSD: bench_http.c,v 1.1.1.3 2021/04/07 02:43:15 christos Exp $      */
/*
* Copyright 2008-2012 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/

#include <sys/types.h>
#include <sys/stat.h>
#ifdef _WIN32
#include <winsock2.h>
#else
#include <sys/socket.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <unistd.h>
#endif
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include "event2/event.h"
#include "event2/buffer.h"
#include "event2/util.h"
#include "event2/http.h"
#include "event2/thread.h"

static void http_basic_cb(struct evhttp_request *req, void *arg);

static char *content;
static size_t content_len = 0;

static void
http_basic_cb(struct evhttp_request *req, void *arg)
{
       struct evbuffer *evb = evbuffer_new();

       evbuffer_add(evb, content, content_len);

       /* allow sending of an empty reply */
       evhttp_send_reply(req, HTTP_OK, "Everything is fine", evb);

       evbuffer_free(evb);
}

#if LIBEVENT_VERSION_NUMBER >= 0x02000200
static void
http_ref_cb(struct evhttp_request *req, void *arg)
{
       struct evbuffer *evb = evbuffer_new();

       evbuffer_add_reference(evb, content, content_len, NULL, NULL);

       /* allow sending of an empty reply */
       evhttp_send_reply(req, HTTP_OK, "Everything is fine", evb);

       evbuffer_free(evb);
}
#endif

int
main(int argc, char **argv)
{
       struct event_config *cfg = event_config_new();
       struct event_base *base;
       struct evhttp *http;
       int i;
       int c;
       int use_iocp = 0;
       ev_uint16_t port = 8080;
       char *endptr = NULL;

#ifdef _WIN32
       WSADATA WSAData;
       WSAStartup(0x101, &WSAData);
#else
       if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
               return (1);
#endif

       setbuf(stdout, NULL);
       setbuf(stderr, NULL);

       for (i = 1; i < argc; ++i) {
               if (*argv[i] != '-')
                       continue;

               c = argv[i][1];

               if ((c == 'p' || c == 'l') && i + 1 >= argc) {
                       fprintf(stderr, "-%c requires argument.\n", c);
                       exit(1);
               }

               switch (c) {
               case 'p':
                       if (i+1 >= argc || !argv[i+1]) {
                               fprintf(stderr, "Missing port\n");
                               exit(1);
                       }
                       port = (int)strtol(argv[i+1], &endptr, 10);
                       if (*endptr != '\0') {
                               fprintf(stderr, "Bad port\n");
                               exit(1);
                       }
                       break;
               case 'l':
                       if (i+1 >= argc || !argv[i+1]) {
                               fprintf(stderr, "Missing content length\n");
                               exit(1);
                       }
                       content_len = (size_t)strtol(argv[i+1], &endptr, 10);
                       if (*endptr != '\0' || content_len == 0) {
                               fprintf(stderr, "Bad content length\n");
                               exit(1);
                       }
                       break;
#ifdef _WIN32
               case 'i':
                       use_iocp = 1;
#ifdef EVTHREAD_USE_WINDOWS_THREADS_IMPLEMENTED
                       evthread_use_windows_threads();
#endif
                       event_config_set_flag(cfg,EVENT_BASE_FLAG_STARTUP_IOCP);
                       break;
#endif
               default:
                       fprintf(stderr, "Illegal argument \"%c\"\n", c);
                       exit(1);
               }
       }

       base = event_base_new_with_config(cfg);
       if (!base) {
               fprintf(stderr, "creating event_base failed. Exiting.\n");
               return 1;
       }

       http = evhttp_new(base);

       content = malloc(content_len);
       if (content == NULL) {
               fprintf(stderr, "Cannot allocate content\n");
               exit(1);
       } else {
               int i = 0;
               for (i = 0; i < (int)content_len; ++i)
                       content[i] = (i & 255);
       }

       evhttp_set_cb(http, "/ind", http_basic_cb, NULL);
       fprintf(stderr, "/ind - basic content (memory copy)\n");

       evhttp_set_cb(http, "/ref", http_ref_cb, NULL);
       fprintf(stderr, "/ref - basic content (reference)\n");

       fprintf(stderr, "Serving %d bytes on port %d using %s\n",
           (int)content_len, port,
           use_iocp? "IOCP" : event_base_get_method(base));

       evhttp_bind_socket(http, "0.0.0.0", port);

#ifdef _WIN32
       if (use_iocp) {
               struct timeval tv={99999999,0};
               event_base_loopexit(base, &tv);
       }
#endif
       event_base_dispatch(base);

#ifdef _WIN32
       WSACleanup();
#endif

       /* NOTREACHED */
       return (0);
}