387 lines
10 KiB
C
387 lines
10 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2016-2020 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAfRRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <mio.h>
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#include <mio-utl.h>
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#include <mio-sck.h>
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#include <mio-pro.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <signal.h>
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#include <net/if.h>
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#include <assert.h>
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#if defined(HAVE_OPENSSL_SSL_H) && defined(HAVE_SSL)
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# include <openssl/ssl.h>
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# if defined(HAVE_OPENSSL_ERR_H)
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# include <openssl/err.h>
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# endif
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# if defined(HAVE_OPENSSL_ENGINE_H)
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# include <openssl/engine.h>
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# endif
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# define USE_SSL
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#endif
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/* ========================================================================= */
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struct mmgr_stat_t
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{
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mio_oow_t total_count;
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};
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typedef struct mmgr_stat_t mmgr_stat_t;
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static mmgr_stat_t mmgr_stat;
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static void* mmgr_alloc (mio_mmgr_t* mmgr, mio_oow_t size)
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{
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void* x;
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#if 0
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if (((mmgr_stat_t*)mmgr->ctx)->total_count > 300)
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{
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printf ("CRITICAL ERROR ---> too many heap chunks...\n");
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return MIO_NULL;
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}
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#endif
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x = malloc (size);
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if (x) ((mmgr_stat_t*)mmgr->ctx)->total_count++;
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return x;
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}
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static void* mmgr_realloc (mio_mmgr_t* mmgr, void* ptr, mio_oow_t size)
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{
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return realloc (ptr, size);
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}
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static void mmgr_free (mio_mmgr_t* mmgr, void* ptr)
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{
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((mmgr_stat_t*)mmgr->ctx)->total_count--;
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return free (ptr);
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}
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static mio_mmgr_t mmgr =
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{
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mmgr_alloc,
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mmgr_realloc,
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mmgr_free,
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&mmgr_stat
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};
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/* ========================================================================= */
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#if defined(USE_SSL)
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static void cleanup_openssl ()
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{
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/* ERR_remove_state() should be called for each thread if the application is thread */
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ERR_remove_state (0);
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#if defined(HAVE_ENGINE_CLEANUP)
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ENGINE_cleanup ();
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#endif
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ERR_free_strings ();
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EVP_cleanup ();
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#if defined(HAVE_CRYPTO_CLEANUP_ALL_EX_DATA)
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CRYPTO_cleanup_all_ex_data ();
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#endif
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}
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#endif
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struct tcp_server_t
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{
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int tally;
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};
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typedef struct tcp_server_t tcp_server_t;
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static void tcp_sck_on_disconnect (mio_dev_sck_t* tcp)
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{
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switch (MIO_DEV_SCK_GET_PROGRESS(tcp))
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{
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case MIO_DEV_SCK_CONNECTING:
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MIO_INFO1 (tcp->mio, "OUTGOING SESSION DISCONNECTED - FAILED TO CONNECT (%d) TO REMOTE SERVER\n", (int)tcp->hnd);
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break;
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case MIO_DEV_SCK_CONNECTING_SSL:
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MIO_INFO1 (tcp->mio, "OUTGOING SESSION DISCONNECTED - FAILED TO SSL-CONNECT (%d) TO REMOTE SERVER\n", (int)tcp->hnd);
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break;
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case MIO_DEV_SCK_LISTENING:
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MIO_INFO1 (tcp->mio, "SHUTTING DOWN THE SERVER SOCKET(%d)...\n", (int)tcp->hnd);
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break;
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case MIO_DEV_SCK_CONNECTED:
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MIO_INFO1 (tcp->mio, "OUTGOING CLIENT CONNECTION GOT TORN DOWN(%d).......\n", (int)tcp->hnd);
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break;
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case MIO_DEV_SCK_ACCEPTING_SSL:
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MIO_INFO1 (tcp->mio, "INCOMING SSL-ACCEPT GOT DISCONNECTED(%d) ....\n", (int)tcp->hnd);
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break;
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case MIO_DEV_SCK_ACCEPTED:
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MIO_INFO1 (tcp->mio, "INCOMING CLIENT BEING SERVED GOT DISCONNECTED(%d).......\n", (int)tcp->hnd);
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break;
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default:
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MIO_INFO2 (tcp->mio, "SOCKET DEVICE DISCONNECTED (%d - %x)\n", (int)tcp->hnd, (unsigned int)tcp->state);
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break;
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}
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}
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static void tcp_sck_on_connect (mio_dev_sck_t* tcp)
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{
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mio_bch_t buf1[128], buf2[128];
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mio_skadtobcstr (tcp->mio, &tcp->localaddr, buf1, MIO_COUNTOF(buf1), MIO_SKAD_TO_BCSTR_ADDR | MIO_SKAD_TO_BCSTR_PORT);
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mio_skadtobcstr (tcp->mio, &tcp->remoteaddr, buf2, MIO_COUNTOF(buf2), MIO_SKAD_TO_BCSTR_ADDR | MIO_SKAD_TO_BCSTR_PORT);
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if (tcp->state & MIO_DEV_SCK_CONNECTED)
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{
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MIO_INFO3 (tcp->mio, "DEVICE connected to a remote server... LOCAL %hs REMOTE %hs SCK: %d\n", buf1, buf2, tcp->hnd);
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}
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else if (tcp->state & MIO_DEV_SCK_ACCEPTED)
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{
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MIO_INFO3 (tcp->mio, "DEVICE accepted client device... .LOCAL %hs REMOTE %hs SCK: %d\n", buf1, buf2, tcp->hnd);
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}
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if (mio_dev_sck_write(tcp, "hello", 5, MIO_NULL, MIO_NULL) <= -1)
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{
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mio_dev_sck_halt (tcp);
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}
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}
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static int tcp_sck_on_write (mio_dev_sck_t* tcp, mio_iolen_t wrlen, void* wrctx, const mio_skad_t* dstaddr)
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{
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tcp_server_t* ts;
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mio_ntime_t tmout;
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if (wrlen <= -1)
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{
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MIO_INFO1 (tcp->mio, "TCP_SCK_ON_WRITE(%d) >>> SEDING TIMED OUT...........\n", (int)tcp->hnd);
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mio_dev_sck_halt (tcp);
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}
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else
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{
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ts = (tcp_server_t*)(tcp + 1);
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if (wrlen == 0)
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{
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MIO_INFO1 (tcp->mio, "TCP_SCK_ON_WRITE(%d) >>> CLOSED WRITING END\n", (int)tcp->hnd);
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}
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else
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{
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MIO_INFO3 (tcp->mio, "TCP_SCK_ON_WRITE(%d) >>> SENT MESSAGE %d of length %ld\n", (int)tcp->hnd, ts->tally, (long int)wrlen);
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}
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ts->tally++;
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// if (ts->tally >= 2) mio_dev_sck_halt (tcp);
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MIO_INIT_NTIME (&tmout, 5, 0);
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//mio_dev_sck_read (tcp, 1);
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MIO_INFO3 (tcp->mio, "TCP_SCK_ON_WRITE(%d) >>> REQUESTING to READ with timeout of %ld.%08ld\n", (int)tcp->hnd, (long int)tmout.sec, (long int)tmout.nsec);
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mio_dev_sck_timedread (tcp, 1, &tmout);
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}
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return 0;
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}
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static int tcp_sck_on_read (mio_dev_sck_t* tcp, const void* buf, mio_iolen_t len, const mio_skad_t* srcaddr)
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{
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int n;
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if (len <= -1)
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{
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MIO_INFO1 (tcp->mio, "TCP_SCK_ON_READ(%d) STREAM DEVICE: TIMED OUT...\n", (int)tcp->hnd);
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mio_dev_sck_halt (tcp);
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return 0;
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}
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else if (len <= 0)
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{
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MIO_INFO1 (tcp->mio, "TCP_SCK_ON_READ(%d) STREAM DEVICE: EOF RECEIVED...\n", (int)tcp->hnd);
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/* no outstanding request. but EOF */
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mio_dev_sck_halt (tcp);
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return 0;
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}
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MIO_INFO2 (tcp->mio, "TCP_SCK_ON_READ(%d) - received %d bytes\n", (int)tcp->hnd, (int)len);
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{
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mio_ntime_t tmout;
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static char a ='A';
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static char xxx[1000000];
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memset (xxx, a++ , MIO_SIZEOF(xxx));
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MIO_INFO2 (tcp->mio, "TCP_SCK_ON_READ(%d) >>> REQUESTING to write data of %d bytes\n", (int)tcp->hnd, MIO_SIZEOF(xxx));
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//return mio_dev_sck_write (tcp, "HELLO", 5, MIO_NULL);
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MIO_INIT_NTIME (&tmout, 5, 0);
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n = mio_dev_sck_timedwrite(tcp, xxx, MIO_SIZEOF(xxx), &tmout, MIO_NULL, MIO_NULL);
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if (n <= -1) return -1;
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}
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MIO_INFO1 (tcp->mio, "TCP_SCK_ON_READ(%d) - REQUESTING TO STOP READ\n", (int)tcp->hnd);
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mio_dev_sck_read (tcp, 0);
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#if 0
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MIO_INFO1 (tcp->mio, "TCP_SCK_ON_READ(%d) - REQUESTING TO CLOSE WRITING END\n", (int)tcp->hnd);
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/* post the write finisher - close the writing end */
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n = mio_dev_sck_write(tcp, MIO_NULL, 0, MIO_NULL, MIO_NULL);
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if (n <= -1) return -1;
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#endif
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return 0;
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/* return 1; let the main loop to read more greedily without consulting the multiplexer */
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}
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/* ========================================================================= */
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static void pro_on_close (mio_dev_pro_t* pro, mio_dev_pro_sid_t sid)
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{
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mio_t* mio = pro->mio;
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if (sid == MIO_DEV_PRO_MASTER)
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MIO_INFO1 (mio, "PROCESS(%d) CLOSE MASTER\n", (int)pro->child_pid);
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else
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MIO_INFO2 (mio, "PROCESS(%d) CLOSE SLAVE[%d]\n", (int)pro->child_pid, sid);
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}
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static int pro_on_read (mio_dev_pro_t* pro, mio_dev_pro_sid_t sid, const void* data, mio_iolen_t dlen)
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{
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mio_t* mio = pro->mio;
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if (dlen <= -1)
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{
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MIO_INFO1 (mio, "PROCESS(%d): READ TIMED OUT...\n", (int)pro->child_pid);
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mio_dev_pro_halt (pro);
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return 0;
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}
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else if (dlen <= 0)
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{
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MIO_INFO1 (mio, "PROCESS(%d): EOF RECEIVED...\n", (int)pro->child_pid);
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/* no outstanding request. but EOF */
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mio_dev_pro_halt (pro);
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return 0;
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}
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MIO_INFO5 (mio, "PROCESS(%d) READ DATA ON SLAVE[%d] len=%d [%.*hs]\n", (int)pro->child_pid, (int)sid, (int)dlen, dlen, (char*)data);
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if (sid == MIO_DEV_PRO_OUT)
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{
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mio_dev_pro_read (pro, sid, 0);
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mio_dev_pro_write (pro, "HELLO\n", 6, MIO_NULL);
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}
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return 0;
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}
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static int pro_on_write (mio_dev_pro_t* pro, mio_iolen_t wrlen, void* wrctx)
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{
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mio_t* mio = pro->mio;
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mio_ntime_t tmout;
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if (wrlen <= -1)
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{
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MIO_INFO1 (mio, "PROCESS(%d): WRITE TIMED OUT...\n", (int)pro->child_pid);
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mio_dev_pro_halt (pro);
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return 0;
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}
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MIO_DEBUG2 (mio, "PROCESS(%d) wrote data of %d bytes\n", (int)pro->child_pid, (int)wrlen);
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/*mio_dev_pro_read (pro, MIO_DEV_PRO_OUT, 1);*/
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MIO_INIT_NTIME (&tmout, 5, 0);
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mio_dev_pro_timedread (pro, MIO_DEV_PRO_OUT, 1, &tmout);
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return 0;
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}
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/* ========================================================================= */
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static mio_t* g_mio;
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static void handle_signal (int sig)
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{
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if (g_mio) mio_stop (g_mio, MIO_STOPREQ_TERMINATION);
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}
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int main (int argc, char* argv[])
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{
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mio_t* mio = MIO_NULL;
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mio_dev_sck_t* tcpsvr;
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mio_dev_sck_make_t tcp_make;
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mio_dev_sck_connect_t tcp_conn;
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tcp_server_t* ts;
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mio = mio_open(&mmgr, 0, MIO_NULL, 512, MIO_NULL);
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if (!mio)
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{
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printf ("Cannot open mio\n");
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goto oops;
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}
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memset (&tcp_make, 0, MIO_SIZEOF(tcp_make));
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tcp_make.type = MIO_DEV_SCK_TCP4;
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tcp_make.on_write = tcp_sck_on_write;
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tcp_make.on_read = tcp_sck_on_read;
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tcp_make.on_connect = tcp_sck_on_connect;
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tcp_make.on_disconnect = tcp_sck_on_disconnect;
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tcpsvr = mio_dev_sck_make(mio, MIO_SIZEOF(tcp_server_t), &tcp_make);
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if (!tcpsvr)
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{
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printf ("Cannot make a tcp server\n");
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goto oops;
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}
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ts = (tcp_server_t*)(tcpsvr + 1);
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ts->tally = 0;
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memset (&tcp_conn, 0, MIO_SIZEOF(tcp_conn));
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mio_bcstrtoskad(mio, "127.0.0.1:9999", &tcp_conn.remoteaddr);
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MIO_INIT_NTIME (&tcp_conn.connect_tmout, 5, 0);
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tcp_conn.options = 0;
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if (mio_dev_sck_connect(tcpsvr, &tcp_conn) <= -1)
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{
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}
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#if 0
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while (1)
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{
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mio_exec (mio);
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}
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#endif
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mio_loop (mio);
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oops:
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if (mio) mio_close (mio);
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return 0;
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}
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