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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2018, Joyent, Inc.
*/
/*
* Send a raw Ethernet frame once a second to a specified MAC address.
*/
#include <stdio.h>
#include <errno.h>
#include <strings.h>
#include <unistd.h>
#include <stdarg.h>
#include <libgen.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <libdlpi.h>
#include <stddef.h>
#include <stdint.h>
#include <endian.h>
#include <err.h>
#include "dlsend.h"
static uint_t dlsend_sap = DLSEND_SAP;
static const char *dlsend_msg = DLSEND_MSG;
static const char *dlsend_prog;
static void
dlsend_usage(const char *fmt, ...)
{
if (fmt != NULL) {
va_list ap;
(void) fprintf(stderr, "%s: ", dlsend_prog);
va_start(ap, fmt);
(void) vfprintf(stderr, fmt, ap);
va_end(ap);
}
(void) fprintf(stderr, "Usage: %s [-s sap] device target-mac\n"
"\t-s sap\tspecify SAP to send on\n",
dlsend_prog);
}
int
main(int argc, char *argv[])
{
int c, maclen, ret;
unsigned long sap;
char *eptr;
uchar_t *mac;
char host[MAXHOSTNAMELEN];
uint_t bind_sap;
dlpi_handle_t dh;
uint64_t count;
dlsend_prog = basename(argv[0]);
while ((c = getopt(argc, argv, ":s:")) != -1) {
switch (c) {
case 's':
errno = 0;
sap = strtoul(optarg, &eptr, 10);
if (errno != 0 || sap == 0 || sap >= UINT16_MAX ||
*eptr != '\0') {
dlsend_usage("Invalid value for sap (-s): %s\n",
optarg);
return (2);
}
dlsend_sap = sap;
break;
case ':':
dlsend_usage("Option -%c requires an operand\n",
optopt);
return (2);
case '?':
dlsend_usage("Unknown option: -%c\n", optopt);
return (2);
}
}
argc -= optind;
argv += optind;
if (argc != 2) {
dlsend_usage("missing required operands\n");
return (2);
}
if ((mac = _link_aton(argv[1], &maclen)) == NULL) {
warnx("failed to convert target address %s\n", argv[1]);
return (1);
}
if (gethostname(host, sizeof (host)) != 0) {
warnx("failed to obtain the system hostname: %s\n",
strerror(errno));
(void) strlcpy(host, "<unknown host>", sizeof (host));
}
if ((ret = dlpi_open(argv[0], &dh, 0)) != DLPI_SUCCESS) {
warnx("failed to open %s: %s\n", argv[0],
dlpi_strerror(ret));
exit(1);
}
if ((ret = dlpi_bind(dh, dlsend_sap, &bind_sap)) != DLPI_SUCCESS) {
warnx("failed to bind to sap 0x%x: %s\n", dlsend_sap,
dlpi_strerror(ret));
exit(1);
}
if (bind_sap != dlsend_sap) {
warnx("failed to bind to requested sap 0x%x, bound to "
"0x%x\n", dlsend_sap, bind_sap);
exit(1);
}
count = 0;
for (;;) {
dlsend_msg_t msg;
count++;
bzero(&msg, sizeof (msg));
msg.dm_count = htobe64(count);
(void) strlcpy(msg.dm_host, host, sizeof (msg.dm_host));
(void) strlcpy(msg.dm_mesg, dlsend_msg, sizeof (msg.dm_mesg));
ret = dlpi_send(dh, mac, maclen, &msg, sizeof (msg), NULL);
if (ret != DLPI_SUCCESS) {
warnx("failed to send message: %s\n",
dlpi_strerror(ret));
exit(1);
}
(void) sleep(1);
}
/* LINTED: E_STMT_NOT_REACHED */
return (0);
}
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