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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2021. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __WIN32__
# include <io.h>
#else
# include <unistd.h>
# include <errno.h>
# include <pthread.h>
#endif
#include "ei.h"
static void usage1(char *what);
static void usage2(char *what, char *val);
static void fail1(char *what);
char *progname;
ei_cnode cnode;
char *node_name = NULL;
char *cookie = NULL;
short creation = -1;
#ifdef __WIN32__
static unsigned __stdcall ei_node_executor(LPVOID unused)
#else
static void *ei_node_executor(void *unused)
#endif
{
int lfd, pfd, res, port;
ei_init();
res = ei_connect_init(&cnode, node_name, cookie, creation);
if (res < 0)
fail1("ei_connect_init");
port = 0;
lfd = ei_listen(&cnode, &port, 5);
if (lfd < 0)
fail1("ei_listen");
pfd = ei_publish(&cnode, port);
if (pfd < 0)
fail1("ei_publish");
printf("accepting");
fflush(stdout);
while (!0) {
ErlConnect conn;
int afd = ei_accept(&cnode, lfd, &conn);
if (afd < 0)
fail1("ei_accept");
while (!0) {
ei_x_buff x;
erlang_msg msg;
ei_x_new(&x);
do {
res = ei_xreceive_msg(afd, &msg, &x);
} while (res == ERL_TICK);
if (res != ERL_MSG) {
/* connection closed... */
ei_close_connection(afd);
break;
}
switch (msg.msgtype) {
case ERL_SEND:
case ERL_REG_SEND:
ei_send_reg_encoded(afd, &cnode.self, "cnode_forward_receiver",
x.buff, x.index);
break;
case ERL_LINK:
fail1("received link");
break;
case ERL_UNLINK:
fail1("received unlink");
break;
case ERL_EXIT:
fail1("received exit");
break;
default:
fail1("received invalid signal");
break;
}
ei_x_free(&x);
}
}
#ifdef __WIN32__
return 0;
#else
return NULL;
#endif
}
int
main(int argc, char *argv[])
{
#ifdef __WIN32__
unsigned tid;
HANDLE thndl;
#else
pthread_t tid;
#endif
int i;
progname = argv[0];
i = 1;
while (i < argc) {
if (strcmp(argv[i], "-sname") == 0) {
i++;
if (i == argc)
usage1("Missing -sname value");
node_name = argv[i];
}
else if (strcmp(argv[i], "-cookie") == 0) {
i++;
if (i == argc)
usage1("Missing -cookie value");
cookie = argv[i];
}
else if (strcmp(argv[i], "-creation") == 0) {
char *endp;
long int val;
i++;
if (i == argc)
usage1("Missing -creation value");
val = strtol(argv[i], &endp, 10);
creation = (short) val;
if (*endp != '\0' || creation < 4)
usage2("Invalid creation", argv[i]);
}
else {
usage2("Unknown parameter", argv[i]);
}
i++;
}
if (!node_name)
usage1("Missing -sname parameter");
if (!cookie)
usage1("Missing -cookie parameter");
if (creation < 0)
usage1("Missing -creation parameter");
#ifdef __WIN32__
thndl = (HANDLE) _beginthreadex(NULL, 0, ei_node_executor,
NULL, 0, &tid);
if (thndl == (HANDLE) 0)
fail1("_beginthreadex() failed");
#else
if (pthread_create(&tid, NULL, ei_node_executor, NULL) != 0)
fail1("pthread_create() failed");
#endif
/* Wait until stdin is closed. Terminate when that happens... */
while (!0) {
char buf[128];
#ifdef __WIN32__
int res = _read(0, (void *) &buf[0], sizeof(buf));
#else
ssize_t res = read(0, (void *) &buf[0], sizeof(buf));
#endif
if (res == 0)
exit(0); /* erlang port closed... */
if (res < 0 && errno != EINTR) {
fail1("read() failed");
}
}
return 0;
}
static void
usage1(char *what)
{
fprintf(stderr,
"ERROR: %s\n\n"
" Usage:\n"
" %s -sname <node name> -cookie <cookie> -creation <creation>\n",
what, progname);
exit(1);
}
static void
usage2(char *what, char *val)
{
fprintf(stderr,
"ERROR: %s: %s\n\n"
" Usage:\n"
" %s -sname <node name> -cookie <cookie> -creation <creation>\n",
what, val, progname);
exit(1);
}
static void
fail1(char *what)
{
fprintf(stderr, "%s FAILED: %s; %d\n",
cnode.thisalivename, what, erl_errno);
exit(1);
}
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