rusers.c revision 1.2
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/types.h> 35 #include <sys/param.h> 36 #include <sys/socket.h> 37 #include <netdb.h> 38 #include <stdio.h> 39 #include <strings.h> 40 #include <rpc/rpc.h> 41 #include <arpa/inet.h> 42 #include <rpcsvc/rnusers.h> 43 44 #define MAX_INT 0x7fffffff 45 #define HOST_WIDTH 20 46 #define LINE_WIDTH 15 47 char *argv0; 48 49 int longopt; 50 int allopt; 51 52 struct host_list { 53 struct host_list *next; 54 struct in_addr addr; 55 } *hosts; 56 57 int search_host(struct in_addr addr) 58 { 59 struct host_list *hp; 60 61 if (!hosts) 62 return(0); 63 64 for (hp = hosts; hp != NULL; hp = hp->next) { 65 if (hp->addr.s_addr == addr.s_addr) 66 return(1); 67 } 68 return(0); 69 } 70 71 void remember_host(struct in_addr addr) 72 { 73 struct host_list *hp; 74 75 if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) { 76 fprintf(stderr, "%s: no memory.\n", argv0); 77 exit(1); 78 } 79 hp->addr.s_addr = addr.s_addr; 80 hp->next = hosts; 81 hosts = hp; 82 } 83 84 rusers_reply(char *replyp, struct sockaddr_in *raddrp) 85 { 86 int x, idle; 87 char date[32], idle_time[64], remote[64]; 88 struct hostent *hp; 89 utmpidlearr *up = (utmpidlearr *)replyp; 90 char *host; 91 int days, hours, minutes, seconds; 92 93 if (search_host(raddrp->sin_addr)) 94 return(0); 95 96 if (!allopt && !up->utmpidlearr_len) 97 return(0); 98 99 hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr, 100 sizeof(struct in_addr), AF_INET); 101 if (hp) 102 host = hp->h_name; 103 else 104 host = inet_ntoa(raddrp->sin_addr); 105 106 if (!longopt) 107 printf("%-*s ", HOST_WIDTH, host); 108 109 for (x = 0; x < up->utmpidlearr_len; x++) { 110 strncpy(date, 111 &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[4]), 112 sizeof(date)-1); 113 114 idle = up->utmpidlearr_val[x].ui_idle; 115 sprintf(idle_time, " :%02d", idle); 116 if (idle == MAX_INT) 117 strcpy(idle_time, "??"); 118 else if (idle == 0) 119 strcpy(idle_time, ""); 120 else { 121 seconds = idle; 122 days = seconds/(60*60*24); 123 seconds %= (60*60*24); 124 hours = seconds/(60*60); 125 seconds %= (60*60); 126 minutes = seconds/60; 127 seconds %= 60; 128 if (idle > 60) 129 sprintf(idle_time, "%d:%02d", 130 minutes, seconds); 131 if (idle >= (60*60)) 132 sprintf(idle_time, "%d:%02d:%02d", 133 hours, minutes, seconds); 134 if (idle >= (24*60*60)) 135 sprintf(idle_time, "%d days, %d:%02d:%02d", 136 days, hours, minutes, seconds); 137 } 138 139 strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host, sizeof(remote)-1); 140 if (strlen(remote) != 0) 141 sprintf(remote, "(%.16s)", up->utmpidlearr_val[x].ui_utmp.ut_host); 142 143 if (longopt) 144 printf("%-8.8s %*s:%-*.*s %-12.12s %6s %.18s\n", 145 up->utmpidlearr_val[x].ui_utmp.ut_name, 146 HOST_WIDTH, host, 147 LINE_WIDTH, LINE_WIDTH, up->utmpidlearr_val[x].ui_utmp.ut_line, 148 date, 149 idle_time, 150 remote 151 ); 152 else 153 printf("%s ", 154 up->utmpidlearr_val[x].ui_utmp.ut_name); 155 } 156 if (!longopt) 157 putchar('\n'); 158 159 remember_host(raddrp->sin_addr); 160 return(0); 161 } 162 163 onehost(char *host) 164 { 165 utmpidlearr up; 166 CLIENT *rusers_clnt; 167 struct sockaddr_in addr; 168 struct hostent *hp; 169 170 hp = gethostbyname(host); 171 if (hp == NULL) { 172 fprintf(stderr, "%s: unknown host \"%s\"\n", 173 argv0, host); 174 exit(1); 175 } 176 177 rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); 178 if (rusers_clnt == NULL) { 179 clnt_pcreateerror(argv0); 180 exit(1); 181 } 182 183 bzero((char *)&up, sizeof(up)); 184 if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, &up, NULL) != RPC_SUCCESS) { 185 clnt_perror(rusers_clnt, argv0); 186 exit(1); 187 } 188 addr.sin_addr.s_addr = *(int *)hp->h_addr; 189 rusers_reply((char *)&up, &addr); 190 } 191 192 allhosts() 193 { 194 utmpidlearr up; 195 enum clnt_stat clnt_stat; 196 197 bzero((char *)&up, sizeof(up)); 198 clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, RUSERSPROC_NAMES, 199 xdr_void, NULL, 200 xdr_utmpidlearr, &up, rusers_reply); 201 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) { 202 fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat)); 203 exit(1); 204 } 205 } 206 207 usage() 208 { 209 fprintf(stderr, "Usage: %s [-la] [hosts ...]\n", argv0); 210 exit(1); 211 } 212 213 main(int argc, char *argv[]) 214 { 215 int ch; 216 extern int optind; 217 218 if (!(argv0 = rindex(argv[0], '/'))) 219 argv0 = argv[0]; 220 else 221 argv0++; 222 223 224 while ((ch = getopt(argc, argv, "al")) != -1) 225 switch (ch) { 226 case 'a': 227 allopt++; 228 break; 229 case 'l': 230 longopt++; 231 break; 232 default: 233 usage(); 234 /*NOTREACHED*/ 235 } 236 237 if (argc == optind) 238 allhosts(); 239 else { 240 for (; optind < argc; optind++) 241 (void) onehost(argv[optind]); 242 } 243 exit(0); 244 } 245
Indexes created Sat Sep 27 22:09:54 GMT 2025