8137012ce6
a vif list and printing it a la netstat -g (but simpler). This doesn't get installed, so there's no man page.
125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/*
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* Copyright 1995 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*/
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <err.h>
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#include <sysexits.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "rsrr.h"
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char sunpath[MAXPATHLEN];
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int s;
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void exitfn(void) {
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close(s);
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unlink(sunpath);
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}
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int main(void) {
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struct sockaddr_un sun;
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char buf[RSRR_MAX_LEN];
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struct rsrr_header *rh;
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struct rsrr_vif *rvp;
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int i;
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s = socket(PF_LOCAL, SOCK_DGRAM, 0);
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if (s < 0) {
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err(EX_OSERR, "socket(PF_LOCAL, SOCK_DGRAM, 0)");
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}
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sun.sun_family = AF_LOCAL;
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snprintf(sunpath, sizeof sun.sun_path, "/tmp/testrsrr.%lu",
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(unsigned long)getpid());
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strcpy(sun.sun_path, sunpath);
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sun.sun_len = (offsetof(struct sockaddr_un, sun_path)
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+ strlen(sunpath));
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if (bind(s, (struct sockaddr *)&sun, sun.sun_len) < 0) {
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err(EX_OSERR, "bind: %s", sunpath);
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}
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atexit(exitfn); /* clean up if we exit on error */
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strcpy(sun.sun_path, RSRR_SERV_PATH);
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sun.sun_len = (offsetof(struct sockaddr_un, sun_path)
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+ strlen(sunpath));
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if (connect(s, (struct sockaddr *)&sun, sun.sun_len) < 0) {
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err(EX_OSERR, "connect: %s", RSRR_SERV_PATH);
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}
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rh = (struct rsrr_header *)buf;
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rh->version = RSRR_MAX_VERSION;
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rh->type = RSRR_INITIAL_QUERY;
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rh->flags = 0;
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rh->num = 0;
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if (write(s, rh, sizeof *rh) == (ssize_t)-1) {
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err(EX_OSERR, "write(initial query)");
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}
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if (read(s, buf, sizeof buf) == (ssize_t)-1) {
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err(EX_OSERR, "read(initial reply)");
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}
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if (rh->version != RSRR_MAX_VERSION) {
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errx(EX_PROTOCOL, "bad remote version %d", rh->version);
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}
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if (rh->type != RSRR_INITIAL_REPLY) {
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errx(EX_PROTOCOL, "remote returned unexpected message type %d",
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rh->type);
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}
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if (rh->flags) {
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printf("confusing flags: %d\n", rh->flags);
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}
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printf("There are %d vifs configured:\n", rh->num);
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printf(" Vif Thresh Status Local address\n");
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for(i = 0, rvp = (struct rsrr_vif *)(rh + 1); i < rh->num; i++,rvp++) {
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printf(" %3d %6d %6d %s\n", rvp->id, rvp->threshold,
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rvp->status, inet_ntoa(rvp->local_addr));
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}
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exit(0);
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}
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