1 /*- 2 * Copyright (c) 1993, John Brezak 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/types.h> 39 #include <sys/socket.h> 40 41 #include <rpc/rpc.h> 42 #include <rpc/pmap_clnt.h> 43 #include <rpcsvc/rnusers.h> 44 45 #include <arpa/inet.h> 46 47 #include <err.h> 48 #include <netdb.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <timeconv.h> 53 #include <unistd.h> 54 55 #define MAX_INT 0x7fffffff 56 #define HOST_WIDTH 20 57 #define LINE_WIDTH 15 58 59 static int longopt; 60 static int allopt; 61 62 static struct host_list { 63 struct host_list *next; 64 struct in_addr addr; 65 } *hosts; 66 67 static int 68 search_host(struct in_addr addr) 69 { 70 struct host_list *hp; 71 72 if (hosts == NULL) 73 return (0); 74 75 for (hp = hosts; hp != NULL; hp = hp->next) { 76 if (hp->addr.s_addr == addr.s_addr) 77 return (1); 78 } 79 return (0); 80 } 81 82 static void 83 remember_host(struct in_addr addr) 84 { 85 struct host_list *hp; 86 87 if ((hp = (struct host_list *)malloc(sizeof(struct host_list))) == NULL) 88 errx(1, "no memory"); 89 hp->addr.s_addr = addr.s_addr; 90 hp->next = hosts; 91 hosts = hp; 92 } 93 94 static int 95 rusers_reply(caddr_t replyp, struct sockaddr_in *raddrp) 96 { 97 u_int x; 98 int idle; 99 char date[32], idle_time[64], remote[64]; 100 struct hostent *hp; 101 utmpidlearr *up, u; 102 char *host; 103 int days, hours, minutes, seconds; 104 105 up = &u; 106 memcpy(up, replyp, sizeof(*up)); 107 if (search_host(raddrp->sin_addr)) 108 return (0); 109 110 if (!allopt && up->utmpidlearr_len == 0) 111 return (0); 112 113 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 114 sizeof(struct in_addr), AF_INET); 115 if (hp != NULL) 116 host = hp->h_name; 117 else 118 host = inet_ntoa(raddrp->sin_addr); 119 120 if (!longopt) 121 printf("%-*s ", HOST_WIDTH, host); 122 123 for (x = 0; x < up->utmpidlearr_len; x++) { 124 time_t t = _int_to_time(up->utmpidlearr_val[x].ui_utmp.ut_time); 125 strncpy(date, &(ctime(&t)[4]), sizeof(date) - 1); 126 127 idle = up->utmpidlearr_val[x].ui_idle; 128 sprintf(idle_time, " :%02d", idle); 129 if (idle == MAX_INT) 130 strcpy(idle_time, "??"); 131 else if (idle == 0) 132 strcpy(idle_time, ""); 133 else { 134 seconds = idle; 135 days = seconds / (60 * 60 * 24); 136 seconds %= (60 * 60 * 24); 137 hours = seconds / (60 * 60); 138 seconds %= (60 * 60); 139 minutes = seconds / 60; 140 seconds %= 60; 141 if (idle > 60) 142 sprintf(idle_time, "%d:%02d", minutes, seconds); 143 if (idle >= (60 * 60)) 144 sprintf(idle_time, "%d:%02d:%02d", 145 hours, minutes, seconds); 146 if (idle >= (24 * 60 * 60)) 147 sprintf(idle_time, "%d days, %d:%02d:%02d", 148 days, hours, minutes, seconds); 149 } 150 151 strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host, 152 sizeof(remote) - 1); 153 if (strlen(remote) != 0) 154 sprintf(remote, "(%.16s)", 155 up->utmpidlearr_val[x].ui_utmp.ut_host); 156 157 if (longopt) 158 printf("%-8.8s %*s:%-*.*s %-12.12s %6s %.18s\n", 159 up->utmpidlearr_val[x].ui_utmp.ut_name, 160 HOST_WIDTH, host, LINE_WIDTH, LINE_WIDTH, 161 up->utmpidlearr_val[x].ui_utmp.ut_line, date, 162 idle_time, remote ); 163 else 164 printf("%s ", 165 up->utmpidlearr_val[x].ui_utmp.ut_name); 166 } 167 if (!longopt) 168 putchar('\n'); 169 170 remember_host(raddrp->sin_addr); 171 return (0); 172 } 173 174 static void 175 onehost(char *host) 176 { 177 utmpidlearr up; 178 CLIENT *rusers_clnt; 179 struct sockaddr_in addr; 180 struct hostent *hp; 181 struct timeval tv; 182 183 hp = gethostbyname(host); 184 if (hp == NULL) 185 errx(1, "unknown host \"%s\"", host); 186 187 rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); 188 if (rusers_clnt == NULL) 189 errx(1, "%s", clnt_spcreateerror("")); 190 191 bzero((char *)&up, sizeof(up)); 192 tv.tv_sec = 15; /* XXX ?? */ 193 tv.tv_usec = 0; 194 if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, (xdrproc_t)xdr_void, NULL, 195 (xdrproc_t)xdr_utmpidlearr, &up, tv) != RPC_SUCCESS) 196 errx(1, "%s", clnt_sperror(rusers_clnt, "")); 197 memcpy(&addr.sin_addr.s_addr, hp->h_addr, sizeof(addr.sin_addr.s_addr)); 198 rusers_reply((caddr_t)&up, &addr); 199 clnt_destroy(rusers_clnt); 200 } 201 202 static void 203 allhosts(void) 204 { 205 utmpidlearr up; 206 enum clnt_stat clnt_stat; 207 208 bzero((char *)&up, sizeof(up)); 209 clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, 210 RUSERSPROC_NAMES, (xdrproc_t)xdr_void, NULL, 211 (xdrproc_t)xdr_utmpidlearr, (char *)&up, 212 (resultproc_t)rusers_reply); 213 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) 214 errx(1, "%s", clnt_sperrno(clnt_stat)); 215 } 216 217 static void 218 usage(void) 219 { 220 221 fprintf(stderr, "usage: rusers [-al] [host ...]\n"); 222 exit(1); 223 } 224 225 int 226 main(int argc, char *argv[]) 227 { 228 int ch; 229 230 while ((ch = getopt(argc, argv, "al")) != -1) 231 switch (ch) { 232 case 'a': 233 allopt++; 234 break; 235 case 'l': 236 longopt++; 237 break; 238 default: 239 usage(); 240 /* NOTREACHED */ 241 } 242 243 setlinebuf(stdout); 244 if (argc == optind) 245 allhosts(); 246 else { 247 for (; optind < argc; optind++) 248 (void)onehost(argv[optind]); 249 } 250 exit(0); 251 } 252