rusers.c revision 1.5
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 char rcsid[] = "$Id: rusers.c,v 1.5 1993/11/10 04:19:03 deraadt Exp $"; 36 #endif /* not lint */ 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 #include <netdb.h> 42 #include <stdio.h> 43 #include <strings.h> 44 #include <rpc/rpc.h> 45 #include <arpa/inet.h> 46 #include <rpcsvc/rnusers.h> 47 48 #define MAX_INT 0x7fffffff 49 #define HOST_WIDTH 20 50 #define LINE_WIDTH 8 51 char *argv0; 52 53 int longopt; 54 int allopt; 55 56 struct host_list { 57 struct host_list *next; 58 struct in_addr addr; 59 } *hosts; 60 61 int 62 search_host(addr) 63 struct in_addr addr; 64 { 65 struct host_list *hp; 66 67 if (!hosts) 68 return(0); 69 70 for (hp = hosts; hp != NULL; hp = hp->next) { 71 if (hp->addr.s_addr == addr.s_addr) 72 return(1); 73 } 74 return(0); 75 } 76 77 void 78 remember_host(addr) 79 struct in_addr addr; 80 { 81 struct host_list *hp; 82 83 if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) { 84 fprintf(stderr, "%s: no memory.\n", argv0); 85 exit(1); 86 } 87 hp->addr.s_addr = addr.s_addr; 88 hp->next = hosts; 89 hosts = hp; 90 } 91 92 rusers_reply(replyp, raddrp) 93 char *replyp; 94 struct sockaddr_in *raddrp; 95 { 96 int x, idle; 97 char date[32], idle_time[64], remote[64]; 98 struct hostent *hp; 99 utmpidlearr *up = (utmpidlearr *)replyp; 100 char *host; 101 int days, hours, minutes, seconds; 102 103 if (search_host(raddrp->sin_addr)) 104 return(0); 105 106 if (!allopt && !up->utmpidlearr_len) 107 return(0); 108 109 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 110 sizeof(struct in_addr), AF_INET); 111 if (hp) 112 host = hp->h_name; 113 else 114 host = inet_ntoa(raddrp->sin_addr); 115 116 if (!longopt) 117 printf("%-*.*s ", HOST_WIDTH, HOST_WIDTH, host); 118 119 for (x = 0; x < up->utmpidlearr_len; x++) { 120 strncpy(date, 121 &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[4]), 122 sizeof(date)-1); 123 124 idle = up->utmpidlearr_val[x].ui_idle; 125 sprintf(idle_time, " :%02d", idle); 126 if (idle == MAX_INT) 127 strcpy(idle_time, "??"); 128 else if (idle == 0) 129 strcpy(idle_time, ""); 130 else { 131 seconds = idle; 132 days = seconds/(60*60*24); 133 seconds %= (60*60*24); 134 hours = seconds/(60*60); 135 seconds %= (60*60); 136 minutes = seconds/60; 137 seconds %= 60; 138 if (idle > 60) 139 sprintf(idle_time, "%2d:%02d", 140 minutes, seconds); 141 if (idle >= (60*60)) 142 sprintf(idle_time, "%2d:%02d:%02d", 143 hours, minutes, seconds); 144 if (idle >= (24*60*60)) 145 sprintf(idle_time, "%d days, %d:%02d:%02d", 146 days, hours, minutes, seconds); 147 } 148 149 strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host, 150 sizeof(remote)-1); 151 if (strlen(remote) != 0) 152 sprintf(remote, "(%.16s)", 153 up->utmpidlearr_val[x].ui_utmp.ut_host); 154 155 if (longopt) 156 printf("%-8.8s %-*.*s:%-*.*s %-12.12s %8s %.18s\n", 157 up->utmpidlearr_val[x].ui_utmp.ut_name, 158 HOST_WIDTH, HOST_WIDTH, host, 159 LINE_WIDTH, LINE_WIDTH, 160 up->utmpidlearr_val[x].ui_utmp.ut_line, 161 date, 162 idle_time, 163 remote); 164 else 165 printf("%s ", 166 up->utmpidlearr_val[x].ui_utmp.ut_name); 167 } 168 if (!longopt) 169 putchar('\n'); 170 171 remember_host(raddrp->sin_addr); 172 return(0); 173 } 174 175 onehost(host) 176 char *host; 177 { 178 utmpidlearr up; 179 CLIENT *rusers_clnt; 180 struct sockaddr_in addr; 181 struct hostent *hp; 182 183 hp = gethostbyname(host); 184 if (hp == NULL) { 185 fprintf(stderr, "%s: unknown host \"%s\"\n", 186 argv0, host); 187 exit(1); 188 } 189 190 rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); 191 if (rusers_clnt == NULL) { 192 clnt_pcreateerror(argv0); 193 exit(1); 194 } 195 196 bzero((char *)&up, sizeof(up)); 197 if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL, 198 xdr_utmpidlearr, &up, NULL) != RPC_SUCCESS) { 199 clnt_perror(rusers_clnt, argv0); 200 exit(1); 201 } 202 addr.sin_addr.s_addr = *(int *)hp->h_addr; 203 rusers_reply((char *)&up, &addr); 204 } 205 206 allhosts() 207 { 208 utmpidlearr up; 209 enum clnt_stat clnt_stat; 210 211 bzero((char *)&up, sizeof(up)); 212 clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, 213 RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, 214 &up, rusers_reply); 215 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) { 216 fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat)); 217 exit(1); 218 } 219 } 220 221 usage() 222 { 223 fprintf(stderr, "Usage: %s [-la] [hosts ...]\n", argv0); 224 exit(1); 225 } 226 227 main(argc, argv) 228 int argc; 229 char *argv[]; 230 { 231 int ch; 232 extern int optind; 233 234 if (!(argv0 = rindex(argv[0], '/'))) 235 argv0 = argv[0]; 236 else 237 argv0++; 238 239 240 while ((ch = getopt(argc, argv, "al")) != -1) 241 switch (ch) { 242 case 'a': 243 allopt++; 244 break; 245 case 'l': 246 longopt++; 247 break; 248 default: 249 usage(); 250 /*NOTREACHED*/ 251 } 252 253 setlinebuf(stdout); 254 if (argc == optind) 255 allhosts(); 256 else { 257 for (; optind < argc; optind++) 258 (void) onehost(argv[optind]); 259 } 260 exit(0); 261 } 262
Indexes created Mon Sep 29 15:09:53 GMT 2025