1e541169cScgd /* 2e541169cScgd * Copyright (c) 1983 The Regents of the University of California. 3e541169cScgd * All rights reserved. 4e541169cScgd * 5e541169cScgd * Redistribution and use in source and binary forms, with or without 6e541169cScgd * modification, are permitted provided that the following conditions 7e541169cScgd * are met: 8e541169cScgd * 1. Redistributions of source code must retain the above copyright 9e541169cScgd * notice, this list of conditions and the following disclaimer. 10e541169cScgd * 2. Redistributions in binary form must reproduce the above copyright 11e541169cScgd * notice, this list of conditions and the following disclaimer in the 12e541169cScgd * documentation and/or other materials provided with the distribution. 13e541169cScgd * 3. All advertising materials mentioning features or use of this software 14e541169cScgd * must display the following acknowledgement: 15e541169cScgd * This product includes software developed by the University of 16e541169cScgd * California, Berkeley and its contributors. 17e541169cScgd * 4. Neither the name of the University nor the names of its contributors 18e541169cScgd * may be used to endorse or promote products derived from this software 19e541169cScgd * without specific prior written permission. 20e541169cScgd * 21e541169cScgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22e541169cScgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23e541169cScgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24e541169cScgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25e541169cScgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26e541169cScgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27e541169cScgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28e541169cScgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29e541169cScgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30e541169cScgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31e541169cScgd * SUCH DAMAGE. 32e541169cScgd */ 33e541169cScgd 34e541169cScgd #ifndef lint 35e541169cScgd char copyright[] = 36e541169cScgd "@(#) Copyright (c) 1983 The Regents of the University of California.\n\ 37e541169cScgd All rights reserved.\n"; 38e541169cScgd #endif /* not lint */ 39e541169cScgd 40e541169cScgd #ifndef lint 41e9d867efSmycroft /*static char sccsid[] = "from: @(#)rwhod.c 5.20 (Berkeley) 3/2/91";*/ 42*b55bc39bSandrew static char rcsid[] = "$Id: rwhod.c,v 1.7 1994/04/06 03:01:48 andrew Exp $"; 43e541169cScgd #endif /* not lint */ 44e541169cScgd 45e541169cScgd #include <sys/param.h> 46e541169cScgd #include <sys/socket.h> 47e541169cScgd #include <sys/stat.h> 48e541169cScgd #include <sys/signal.h> 49e541169cScgd #include <sys/ioctl.h> 50e541169cScgd #include <sys/file.h> 51e541169cScgd 52e541169cScgd #include <net/if.h> 53e541169cScgd #include <netinet/in.h> 54e541169cScgd 55e541169cScgd #include <nlist.h> 56e541169cScgd #include <errno.h> 57e541169cScgd #include <utmp.h> 58e541169cScgd #include <ctype.h> 59e541169cScgd #include <netdb.h> 60e541169cScgd #include <syslog.h> 61e541169cScgd #include <protocols/rwhod.h> 62e541169cScgd #include <stdio.h> 63e541169cScgd #include <paths.h> 64e541169cScgd 65e541169cScgd /* 66e541169cScgd * Alarm interval. Don't forget to change the down time check in ruptime 67e541169cScgd * if this is changed. 68e541169cScgd */ 69e541169cScgd #define AL_INTERVAL (3 * 60) 70e541169cScgd 715a78b453Smycroft struct sockaddr_in s_in; 72e541169cScgd 73e541169cScgd char myname[MAXHOSTNAMELEN]; 74e541169cScgd 75e541169cScgd struct nlist nl[] = { 76e541169cScgd #define NL_BOOTTIME 0 77e541169cScgd { "_boottime" }, 78e541169cScgd 0 79e541169cScgd }; 80e541169cScgd 81e541169cScgd /* 82e541169cScgd * We communicate with each neighbor in 83e541169cScgd * a list constructed at the time we're 84e541169cScgd * started up. Neighbors are currently 85e541169cScgd * directly connected via a hardware interface. 86e541169cScgd */ 87e541169cScgd struct neighbor { 88e541169cScgd struct neighbor *n_next; 89e541169cScgd char *n_name; /* interface name */ 90e541169cScgd char *n_addr; /* who to send to */ 91e541169cScgd int n_addrlen; /* size of address */ 92e541169cScgd int n_flags; /* should forward?, interface flags */ 93e541169cScgd }; 94e541169cScgd 95e541169cScgd struct neighbor *neighbors; 96e541169cScgd struct whod mywd; 97e541169cScgd struct servent *sp; 98*b55bc39bSandrew int s, utmpf; 99e541169cScgd 100e541169cScgd #define WHDRSIZE (sizeof (mywd) - sizeof (mywd.wd_we)) 101e541169cScgd 102e541169cScgd extern int errno; 103e541169cScgd char *strcpy(), *malloc(); 104e541169cScgd void getkmem(), onalrm(); 105e541169cScgd struct in_addr inet_makeaddr(); 106e541169cScgd 107e541169cScgd main() 108e541169cScgd { 109e541169cScgd struct sockaddr_in from; 110e541169cScgd struct stat st; 111e541169cScgd char path[64]; 112e541169cScgd int on = 1; 113e541169cScgd char *cp, *index(), *strerror(); 114e541169cScgd 115e541169cScgd if (getuid()) { 116e541169cScgd fprintf(stderr, "rwhod: not super user\n"); 117e541169cScgd exit(1); 118e541169cScgd } 119e541169cScgd sp = getservbyname("who", "udp"); 120e541169cScgd if (sp == 0) { 121e541169cScgd fprintf(stderr, "rwhod: udp/who: unknown service\n"); 122e541169cScgd exit(1); 123e541169cScgd } 124e541169cScgd #ifndef DEBUG 125e541169cScgd daemon(1, 0); 126e541169cScgd #endif 127e541169cScgd if (chdir(_PATH_RWHODIR) < 0) { 128e541169cScgd (void)fprintf(stderr, "rwhod: %s: %s\n", 129e541169cScgd _PATH_RWHODIR, strerror(errno)); 130e541169cScgd exit(1); 131e541169cScgd } 132e541169cScgd (void) signal(SIGHUP, getkmem); 133e541169cScgd openlog("rwhod", LOG_PID, LOG_DAEMON); 134e541169cScgd /* 135e541169cScgd * Establish host name as returned by system. 136e541169cScgd */ 137e541169cScgd if (gethostname(myname, sizeof (myname) - 1) < 0) { 138e541169cScgd syslog(LOG_ERR, "gethostname: %m"); 139e541169cScgd exit(1); 140e541169cScgd } 141e541169cScgd if ((cp = index(myname, '.')) != NULL) 142e541169cScgd *cp = '\0'; 143e541169cScgd strncpy(mywd.wd_hostname, myname, sizeof (myname) - 1); 144e541169cScgd utmpf = open(_PATH_UTMP, O_RDONLY|O_CREAT, 0644); 145e541169cScgd if (utmpf < 0) { 146e541169cScgd syslog(LOG_ERR, "%s: %m", _PATH_UTMP); 147e541169cScgd exit(1); 148e541169cScgd } 149e541169cScgd getkmem(); 150e541169cScgd if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 151e541169cScgd syslog(LOG_ERR, "socket: %m"); 152e541169cScgd exit(1); 153e541169cScgd } 154e541169cScgd if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof (on)) < 0) { 155e541169cScgd syslog(LOG_ERR, "setsockopt SO_BROADCAST: %m"); 156e541169cScgd exit(1); 157e541169cScgd } 1585a78b453Smycroft s_in.sin_family = AF_INET; 1595a78b453Smycroft s_in.sin_port = sp->s_port; 1605a78b453Smycroft if (bind(s, (struct sockaddr *)&s_in, sizeof (s_in)) < 0) { 161e541169cScgd syslog(LOG_ERR, "bind: %m"); 162e541169cScgd exit(1); 163e541169cScgd } 164e541169cScgd if (!configure(s)) 165e541169cScgd exit(1); 166e541169cScgd signal(SIGALRM, onalrm); 167e541169cScgd onalrm(); 168e541169cScgd for (;;) { 169e541169cScgd struct whod wd; 170e541169cScgd int cc, whod, len = sizeof (from); 171e541169cScgd 172e541169cScgd cc = recvfrom(s, (char *)&wd, sizeof (struct whod), 0, 173e541169cScgd (struct sockaddr *)&from, &len); 174e541169cScgd if (cc <= 0) { 175e541169cScgd if (cc < 0 && errno != EINTR) 176e541169cScgd syslog(LOG_WARNING, "recv: %m"); 177e541169cScgd continue; 178e541169cScgd } 179e541169cScgd if (from.sin_port != sp->s_port) { 180e541169cScgd syslog(LOG_WARNING, "%d: bad from port", 181e541169cScgd ntohs(from.sin_port)); 182e541169cScgd continue; 183e541169cScgd } 184e541169cScgd if (wd.wd_vers != WHODVERSION) 185e541169cScgd continue; 186e541169cScgd if (wd.wd_type != WHODTYPE_STATUS) 187e541169cScgd continue; 188e541169cScgd if (!verify(wd.wd_hostname)) { 189e541169cScgd syslog(LOG_WARNING, "malformed host name from %x", 190e541169cScgd from.sin_addr); 191e541169cScgd continue; 192e541169cScgd } 193e541169cScgd (void) sprintf(path, "whod.%s", wd.wd_hostname); 194e541169cScgd /* 195e541169cScgd * Rather than truncating and growing the file each time, 196e541169cScgd * use ftruncate if size is less than previous size. 197e541169cScgd */ 198e541169cScgd whod = open(path, O_WRONLY | O_CREAT, 0644); 199e541169cScgd if (whod < 0) { 200e541169cScgd syslog(LOG_WARNING, "%s: %m", path); 201e541169cScgd continue; 202e541169cScgd } 203e541169cScgd #if ENDIAN != BIG_ENDIAN 204e541169cScgd { 205e541169cScgd int i, n = (cc - WHDRSIZE)/sizeof(struct whoent); 206e541169cScgd struct whoent *we; 207e541169cScgd 208e541169cScgd /* undo header byte swapping before writing to file */ 209e541169cScgd wd.wd_sendtime = ntohl(wd.wd_sendtime); 210e541169cScgd for (i = 0; i < 3; i++) 211e541169cScgd wd.wd_loadav[i] = ntohl(wd.wd_loadav[i]); 212e541169cScgd wd.wd_boottime = ntohl(wd.wd_boottime); 213e541169cScgd we = wd.wd_we; 214e541169cScgd for (i = 0; i < n; i++) { 215e541169cScgd we->we_idle = ntohl(we->we_idle); 216e541169cScgd we->we_utmp.out_time = 217e541169cScgd ntohl(we->we_utmp.out_time); 218e541169cScgd we++; 219e541169cScgd } 220e541169cScgd } 221e541169cScgd #endif 222e541169cScgd (void) time((time_t *)&wd.wd_recvtime); 223e541169cScgd (void) write(whod, (char *)&wd, cc); 224e541169cScgd if (fstat(whod, &st) < 0 || st.st_size > cc) 225e541169cScgd ftruncate(whod, cc); 226e541169cScgd (void) close(whod); 227e541169cScgd } 228e541169cScgd } 229e541169cScgd 230e541169cScgd /* 231e541169cScgd * Check out host name for unprintables 232e541169cScgd * and other funnies before allowing a file 233e541169cScgd * to be created. Sorry, but blanks aren't allowed. 234e541169cScgd */ 235e541169cScgd verify(name) 236e541169cScgd register char *name; 237e541169cScgd { 238e541169cScgd register int size = 0; 239e541169cScgd 240e541169cScgd while (*name) { 241e541169cScgd if (!isascii(*name) || !(isalnum(*name) || ispunct(*name))) 242e541169cScgd return (0); 243e541169cScgd name++, size++; 244e541169cScgd } 245e541169cScgd return (size > 0); 246e541169cScgd } 247e541169cScgd 248e541169cScgd int utmptime; 249e541169cScgd int utmpent; 250e541169cScgd int utmpsize = 0; 251e541169cScgd struct utmp *utmp; 252e541169cScgd int alarmcount; 253e541169cScgd 254e541169cScgd void 255e541169cScgd onalrm() 256e541169cScgd { 257e541169cScgd register struct neighbor *np; 258e541169cScgd register struct whoent *we = mywd.wd_we, *wlast; 259e541169cScgd register int i; 260e541169cScgd struct stat stb; 261e541169cScgd int cc; 262e541169cScgd double avenrun[3]; 263e541169cScgd time_t now = time((time_t *)NULL); 264e541169cScgd char *strerror(); 265e541169cScgd 266e541169cScgd if (alarmcount % 10 == 0) 267e541169cScgd getkmem(); 268e541169cScgd alarmcount++; 269e541169cScgd (void) fstat(utmpf, &stb); 270e541169cScgd if ((stb.st_mtime != utmptime) || (stb.st_size > utmpsize)) { 271e541169cScgd utmptime = stb.st_mtime; 272e541169cScgd if (stb.st_size > utmpsize) { 273e541169cScgd utmpsize = stb.st_size + 10 * sizeof(struct utmp); 274e541169cScgd if (utmp) 275e541169cScgd utmp = (struct utmp *)realloc(utmp, utmpsize); 276e541169cScgd else 277e541169cScgd utmp = (struct utmp *)malloc(utmpsize); 278e541169cScgd if (! utmp) { 279e541169cScgd fprintf(stderr, "rwhod: malloc failed\n"); 280e541169cScgd utmpsize = 0; 281e541169cScgd goto done; 282e541169cScgd } 283e541169cScgd } 2847a6e8896Scgd (void) lseek(utmpf, 0, L_SET); 285e541169cScgd cc = read(utmpf, (char *)utmp, stb.st_size); 286e541169cScgd if (cc < 0) { 287e541169cScgd fprintf(stderr, "rwhod: %s: %s\n", 288e541169cScgd _PATH_UTMP, strerror(errno)); 289e541169cScgd goto done; 290e541169cScgd } 291e541169cScgd wlast = &mywd.wd_we[1024 / sizeof (struct whoent) - 1]; 292e541169cScgd utmpent = cc / sizeof (struct utmp); 293e541169cScgd for (i = 0; i < utmpent; i++) 294e541169cScgd if (utmp[i].ut_name[0]) { 295e541169cScgd bcopy(utmp[i].ut_line, we->we_utmp.out_line, 296e541169cScgd sizeof (utmp[i].ut_line)); 297e541169cScgd bcopy(utmp[i].ut_name, we->we_utmp.out_name, 298e541169cScgd sizeof (utmp[i].ut_name)); 299e541169cScgd we->we_utmp.out_time = htonl(utmp[i].ut_time); 300e541169cScgd if (we >= wlast) 301e541169cScgd break; 302e541169cScgd we++; 303e541169cScgd } 304e541169cScgd utmpent = we - mywd.wd_we; 305e541169cScgd } 306e541169cScgd 307e541169cScgd /* 308e541169cScgd * The test on utmpent looks silly---after all, if no one is 309e541169cScgd * logged on, why worry about efficiency?---but is useful on 310e541169cScgd * (e.g.) compute servers. 311e541169cScgd */ 312e541169cScgd if (utmpent && chdir(_PATH_DEV)) { 313e541169cScgd syslog(LOG_ERR, "chdir(%s): %m", _PATH_DEV); 314e541169cScgd exit(1); 315e541169cScgd } 316e541169cScgd we = mywd.wd_we; 317e541169cScgd for (i = 0; i < utmpent; i++) { 318e541169cScgd if (stat(we->we_utmp.out_line, &stb) >= 0) 319e541169cScgd we->we_idle = htonl(now - stb.st_atime); 320e541169cScgd we++; 321e541169cScgd } 322e541169cScgd (void) getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0])); 323e541169cScgd for (i = 0; i < 3; i++) 324e541169cScgd mywd.wd_loadav[i] = htonl((u_long)(avenrun[i] * 100)); 325e541169cScgd cc = (char *)we - (char *)&mywd; 326e541169cScgd mywd.wd_sendtime = htonl(time(0)); 327e541169cScgd mywd.wd_vers = WHODVERSION; 328e541169cScgd mywd.wd_type = WHODTYPE_STATUS; 329e541169cScgd for (np = neighbors; np != NULL; np = np->n_next) 330e541169cScgd (void) sendto(s, (char *)&mywd, cc, 0, 331e541169cScgd (struct sockaddr *)np->n_addr, np->n_addrlen); 332e541169cScgd if (utmpent && chdir(_PATH_RWHODIR)) { 333e541169cScgd syslog(LOG_ERR, "chdir(%s): %m", _PATH_RWHODIR); 334e541169cScgd exit(1); 335e541169cScgd } 336e541169cScgd done: 337e541169cScgd (void) alarm(AL_INTERVAL); 338e541169cScgd } 339e541169cScgd 340e541169cScgd void 341e541169cScgd getkmem() 342e541169cScgd { 343e541169cScgd static ino_t vmunixino; 344e541169cScgd static time_t vmunixctime; 345e541169cScgd struct stat sb; 346e541169cScgd 347e541169cScgd if (stat(_PATH_UNIX, &sb) < 0) { 348e541169cScgd if (vmunixctime) 349e541169cScgd return; 350e541169cScgd } else { 351e541169cScgd if (sb.st_ctime == vmunixctime && sb.st_ino == vmunixino) 352e541169cScgd return; 353e541169cScgd vmunixctime = sb.st_ctime; 354e541169cScgd vmunixino= sb.st_ino; 355e541169cScgd } 356*b55bc39bSandrew 357*b55bc39bSandrew if (kvm_nlist(nl)) { 358e541169cScgd syslog(LOG_WARNING, "%s: namelist botch", _PATH_UNIX); 359*b55bc39bSandrew mywd.wd_boottime = 0; 360*b55bc39bSandrew return; 361e541169cScgd } 362*b55bc39bSandrew (void) kvm_read((void *)nl[NL_BOOTTIME].n_value, &mywd.wd_boottime, 363e541169cScgd sizeof (mywd.wd_boottime)); 364e541169cScgd mywd.wd_boottime = htonl(mywd.wd_boottime); 365e541169cScgd } 366e541169cScgd 367e541169cScgd /* 368e541169cScgd * Figure out device configuration and select 369e541169cScgd * networks which deserve status information. 370e541169cScgd */ 371e541169cScgd configure(s) 372e541169cScgd int s; 373e541169cScgd { 374e541169cScgd char buf[BUFSIZ], *cp, *cplim; 375e541169cScgd struct ifconf ifc; 376e541169cScgd struct ifreq ifreq, *ifr; 3775a78b453Smycroft struct sockaddr_in *s_in; 378e541169cScgd register struct neighbor *np; 379e541169cScgd 380e541169cScgd ifc.ifc_len = sizeof (buf); 381e541169cScgd ifc.ifc_buf = buf; 382e541169cScgd if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) { 383e541169cScgd syslog(LOG_ERR, "ioctl (get interface configuration)"); 384e541169cScgd return (0); 385e541169cScgd } 386e541169cScgd ifr = ifc.ifc_req; 387e541169cScgd #ifdef AF_LINK 388e541169cScgd #define max(a, b) (a > b ? a : b) 389e541169cScgd #define size(p) max((p).sa_len, sizeof(p)) 390e541169cScgd #else 391e541169cScgd #define size(p) (sizeof (p)) 392e541169cScgd #endif 393e541169cScgd cplim = buf + ifc.ifc_len; /*skip over if's with big ifr_addr's */ 394e541169cScgd for (cp = buf; cp < cplim; 395e541169cScgd cp += sizeof (ifr->ifr_name) + size(ifr->ifr_addr)) { 396e541169cScgd ifr = (struct ifreq *)cp; 397e541169cScgd for (np = neighbors; np != NULL; np = np->n_next) 398e541169cScgd if (np->n_name && 399e541169cScgd strcmp(ifr->ifr_name, np->n_name) == 0) 400e541169cScgd break; 401e541169cScgd if (np != NULL) 402e541169cScgd continue; 403e541169cScgd ifreq = *ifr; 404e541169cScgd np = (struct neighbor *)malloc(sizeof (*np)); 405e541169cScgd if (np == NULL) 406e541169cScgd continue; 407e541169cScgd np->n_name = malloc(strlen(ifr->ifr_name) + 1); 408e541169cScgd if (np->n_name == NULL) { 409e541169cScgd free((char *)np); 410e541169cScgd continue; 411e541169cScgd } 412e541169cScgd strcpy(np->n_name, ifr->ifr_name); 413e541169cScgd np->n_addrlen = sizeof (ifr->ifr_addr); 414e541169cScgd np->n_addr = malloc(np->n_addrlen); 415e541169cScgd if (np->n_addr == NULL) { 416e541169cScgd free(np->n_name); 417e541169cScgd free((char *)np); 418e541169cScgd continue; 419e541169cScgd } 420e541169cScgd bcopy((char *)&ifr->ifr_addr, np->n_addr, np->n_addrlen); 421e541169cScgd if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) { 422e541169cScgd syslog(LOG_ERR, "ioctl (get interface flags)"); 423aa14f04fSmycroft free(np->n_addr); 424aa14f04fSmycroft free(np->n_name); 425e541169cScgd free((char *)np); 426e541169cScgd continue; 427e541169cScgd } 428e541169cScgd if ((ifreq.ifr_flags & IFF_UP) == 0 || 429e541169cScgd (ifreq.ifr_flags & (IFF_BROADCAST|IFF_POINTOPOINT)) == 0) { 430aa14f04fSmycroft free(np->n_addr); 431aa14f04fSmycroft free(np->n_name); 432e541169cScgd free((char *)np); 433e541169cScgd continue; 434e541169cScgd } 435e541169cScgd np->n_flags = ifreq.ifr_flags; 436e541169cScgd if (np->n_flags & IFF_POINTOPOINT) { 437e541169cScgd if (ioctl(s, SIOCGIFDSTADDR, (char *)&ifreq) < 0) { 438e541169cScgd syslog(LOG_ERR, "ioctl (get dstaddr)"); 439aa14f04fSmycroft free(np->n_addr); 440aa14f04fSmycroft free(np->n_name); 441e541169cScgd free((char *)np); 442e541169cScgd continue; 443e541169cScgd } 444e541169cScgd /* we assume addresses are all the same size */ 445e541169cScgd bcopy((char *)&ifreq.ifr_dstaddr, 446e541169cScgd np->n_addr, np->n_addrlen); 447e541169cScgd } 448e541169cScgd if (np->n_flags & IFF_BROADCAST) { 449e541169cScgd if (ioctl(s, SIOCGIFBRDADDR, (char *)&ifreq) < 0) { 450e541169cScgd syslog(LOG_ERR, "ioctl (get broadaddr)"); 451aa14f04fSmycroft free(np->n_addr); 452aa14f04fSmycroft free(np->n_name); 453e541169cScgd free((char *)np); 454e541169cScgd continue; 455e541169cScgd } 456e541169cScgd /* we assume addresses are all the same size */ 457e541169cScgd bcopy((char *)&ifreq.ifr_broadaddr, 458e541169cScgd np->n_addr, np->n_addrlen); 459e541169cScgd } 460e541169cScgd /* gag, wish we could get rid of Internet dependencies */ 4615a78b453Smycroft s_in = (struct sockaddr_in *)np->n_addr; 4625a78b453Smycroft s_in->sin_port = sp->s_port; 463e541169cScgd np->n_next = neighbors; 464e541169cScgd neighbors = np; 465e541169cScgd } 466e541169cScgd return (1); 467e541169cScgd } 468e541169cScgd 469e541169cScgd #ifdef DEBUG 470e541169cScgd sendto(s, buf, cc, flags, to, tolen) 471e541169cScgd int s; 472e541169cScgd char *buf; 473e541169cScgd int cc, flags; 474e541169cScgd char *to; 475e541169cScgd int tolen; 476e541169cScgd { 477e541169cScgd register struct whod *w = (struct whod *)buf; 478e541169cScgd register struct whoent *we; 4795a78b453Smycroft struct sockaddr_in *s_in = (struct sockaddr_in *)to; 480e541169cScgd char *interval(); 481e541169cScgd 4825a78b453Smycroft printf("sendto %x.%d\n", ntohl(s_in->sin_addr), ntohs(s_in->sin_port)); 483e541169cScgd printf("hostname %s %s\n", w->wd_hostname, 484e541169cScgd interval(ntohl(w->wd_sendtime) - ntohl(w->wd_boottime), " up")); 485e541169cScgd printf("load %4.2f, %4.2f, %4.2f\n", 486e541169cScgd ntohl(w->wd_loadav[0]) / 100.0, ntohl(w->wd_loadav[1]) / 100.0, 487e541169cScgd ntohl(w->wd_loadav[2]) / 100.0); 488e541169cScgd cc -= WHDRSIZE; 489e541169cScgd for (we = w->wd_we, cc /= sizeof (struct whoent); cc > 0; cc--, we++) { 490e541169cScgd time_t t = ntohl(we->we_utmp.out_time); 491e541169cScgd printf("%-8.8s %s:%s %.12s", 492e541169cScgd we->we_utmp.out_name, 493e541169cScgd w->wd_hostname, we->we_utmp.out_line, 494e541169cScgd ctime(&t)+4); 495e541169cScgd we->we_idle = ntohl(we->we_idle) / 60; 496e541169cScgd if (we->we_idle) { 497e541169cScgd if (we->we_idle >= 100*60) 498e541169cScgd we->we_idle = 100*60 - 1; 499e541169cScgd if (we->we_idle >= 60) 500e541169cScgd printf(" %2d", we->we_idle / 60); 501e541169cScgd else 502e541169cScgd printf(" "); 503e541169cScgd printf(":%02d", we->we_idle % 60); 504e541169cScgd } 505e541169cScgd printf("\n"); 506e541169cScgd } 507e541169cScgd } 508e541169cScgd 509e541169cScgd char * 510e541169cScgd interval(time, updown) 511e541169cScgd int time; 512e541169cScgd char *updown; 513e541169cScgd { 514e541169cScgd static char resbuf[32]; 515e541169cScgd int days, hours, minutes; 516e541169cScgd 517e541169cScgd if (time < 0 || time > 3*30*24*60*60) { 518e541169cScgd (void) sprintf(resbuf, " %s ??:??", updown); 519e541169cScgd return (resbuf); 520e541169cScgd } 521e541169cScgd minutes = (time + 59) / 60; /* round to minutes */ 522e541169cScgd hours = minutes / 60; minutes %= 60; 523e541169cScgd days = hours / 24; hours %= 24; 524e541169cScgd if (days) 525e541169cScgd (void) sprintf(resbuf, "%s %2d+%02d:%02d", 526e541169cScgd updown, days, hours, minutes); 527e541169cScgd else 528e541169cScgd (void) sprintf(resbuf, "%s %2d:%02d", 529e541169cScgd updown, hours, minutes); 530e541169cScgd return (resbuf); 531e541169cScgd } 532e541169cScgd #endif 533