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 #ifndef lint 35 static const char rcsid[] = 36 "$FreeBSD$"; 37 #endif /* not lint */ 38 39 #include <sys/types.h> 40 #include <sys/socket.h> 41 #include <rpc/rpc.h> 42 #include <rpc/pmap_clnt.h> 43 #include <rpcsvc/rnusers.h> 44 #include <arpa/inet.h> 45 #include <err.h> 46 #include <netdb.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <strings.h> 50 #include <unistd.h> 51 52 #define MAX_INT 0x7fffffff 53 #define HOST_WIDTH 20 54 #define LINE_WIDTH 15 55 56 int longopt; 57 int allopt; 58 59 struct host_list { 60 struct host_list *next; 61 struct in_addr addr; 62 } *hosts; 63 64 int 65 search_host(struct in_addr addr) 66 { 67 struct host_list *hp; 68 69 if (hosts == NULL) 70 return (0); 71 72 for (hp = hosts; hp != NULL; hp = hp->next) { 73 if (hp->addr.s_addr == addr.s_addr) 74 return (1); 75 } 76 return (0); 77 } 78 79 void 80 remember_host(struct in_addr addr) 81 { 82 struct host_list *hp; 83 84 if ((hp = (struct host_list *)malloc(sizeof(struct host_list))) == NULL) 85 errx(1, "no memory"); 86 hp->addr.s_addr = addr.s_addr; 87 hp->next = hosts; 88 hosts = hp; 89 } 90 91 int 92 rusers_reply(caddr_t replyp, struct sockaddr_in *raddrp) 93 { 94 int x, idle; 95 char date[32], idle_time[64], remote[64]; 96 struct hostent *hp; 97 utmpidlearr *up = (utmpidlearr *)replyp; 98 char *host; 99 int days, hours, minutes, seconds; 100 101 if (search_host(raddrp->sin_addr)) 102 return (0); 103 104 if (!allopt && up->utmpidlearr_len == 0) 105 return (0); 106 107 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 108 sizeof(struct in_addr), AF_INET); 109 if (hp != NULL) 110 host = hp->h_name; 111 else 112 host = inet_ntoa(raddrp->sin_addr); 113 114 if (!longopt) 115 printf("%-*s ", HOST_WIDTH, host); 116 117 for (x = 0; x < up->utmpidlearr_len; x++) { 118 time_t t = int_to_time(up->utmpidlearr_val[x].ui_utmp.ut_time); 119 strncpy(date, &(ctime(&t)[4]), sizeof(date) - 1); 120 121 idle = up->utmpidlearr_val[x].ui_idle; 122 sprintf(idle_time, " :%02d", idle); 123 if (idle == MAX_INT) 124 strcpy(idle_time, "??"); 125 else if (idle == 0) 126 strcpy(idle_time, ""); 127 else { 128 seconds = idle; 129 days = seconds / (60 * 60 * 24); 130 seconds %= (60 * 60 * 24); 131 hours = seconds / (60 * 60); 132 seconds %= (60 * 60); 133 minutes = seconds / 60; 134 seconds %= 60; 135 if (idle > 60) 136 sprintf(idle_time, "%d:%02d", minutes, seconds); 137 if (idle >= (60 * 60)) 138 sprintf(idle_time, "%d:%02d:%02d", 139 hours, minutes, seconds); 140 if (idle >= (24 * 60 * 60)) 141 sprintf(idle_time, "%d days, %d:%02d:%02d", 142 days, hours, minutes, seconds); 143 } 144 145 strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host, 146 sizeof(remote) - 1); 147 if (strlen(remote) != 0) 148 sprintf(remote, "(%.16s)", 149 up->utmpidlearr_val[x].ui_utmp.ut_host); 150 151 if (longopt) 152 printf("%-8.8s %*s:%-*.*s %-12.12s %6s %.18s\n", 153 up->utmpidlearr_val[x].ui_utmp.ut_name, 154 HOST_WIDTH, host, LINE_WIDTH, LINE_WIDTH, 155 up->utmpidlearr_val[x].ui_utmp.ut_line, date, 156 idle_time, remote ); 157 else 158 printf("%s ", 159 up->utmpidlearr_val[x].ui_utmp.ut_name); 160 } 161 if (!longopt) 162 putchar('\n'); 163 164 remember_host(raddrp->sin_addr); 165 return (0); 166 } 167 168 void 169 onehost(char *host) 170 { 171 utmpidlearr up; 172 CLIENT *rusers_clnt; 173 struct sockaddr_in addr; 174 struct hostent *hp; 175 struct timeval tv; 176 177 hp = gethostbyname(host); 178 if (hp == NULL) 179 errx(1, "unknown host \"%s\"", host); 180 181 rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); 182 if (rusers_clnt == NULL) 183 errx(1, "%s", clnt_spcreateerror("")); 184 185 bzero((char *)&up, sizeof(up)); 186 tv.tv_sec = 15; /* XXX ?? */ 187 tv.tv_usec = 0; 188 if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL, 189 xdr_utmpidlearr, &up, tv) != RPC_SUCCESS) 190 errx(1, "%s", clnt_sperror(rusers_clnt, "")); 191 addr.sin_addr.s_addr = *(int *)hp->h_addr; 192 rusers_reply((caddr_t)&up, &addr); 193 clnt_destroy(rusers_clnt); 194 } 195 196 void 197 allhosts() 198 { 199 utmpidlearr up; 200 enum clnt_stat clnt_stat; 201 202 bzero((char *)&up, sizeof(up)); 203 clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, 204 RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, (char *)&up, 205 rusers_reply); 206 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) 207 errx(1, "%s", clnt_sperrno(clnt_stat)); 208 } 209 210 static void 211 usage() 212 { 213 214 fprintf(stderr, "usage: rusers [-la] [hosts ...]\n"); 215 exit(1); 216 } 217 218 int 219 main(int argc, char *argv[]) 220 { 221 int ch; 222 223 while ((ch = getopt(argc, argv, "al")) != -1) 224 switch (ch) { 225 case 'a': 226 allopt++; 227 break; 228 case 'l': 229 longopt++; 230 break; 231 default: 232 usage(); 233 /* NOTREACHED */ 234 } 235 236 setlinebuf(stdout); 237 if (argc == optind) 238 allhosts(); 239 else { 240 for (; optind < argc; optind++) 241 (void)onehost(argv[optind]); 242 } 243 exit(0); 244 } 245