Annotation of src/usr.bin/rusers/rusers.c, Revision 1.12
1.12 ! deraadt 1: /* $OpenBSD: rusers.c,v 1.11 2001/02/17 16:52:23 pjanzen Exp $ */
1.3 deraadt 2:
1.1 deraadt 3: /*-
4: * Copyright (c) 1993 John Brezak
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. The name of the author may not be used to endorse or promote products
16: * derived from this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
19: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
22: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
27: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28: * POSSIBILITY OF SUCH DAMAGE.
29: */
30:
31: #ifndef lint
1.12 ! deraadt 32: static char rcsid[] = "$OpenBSD: rusers.c,v 1.11 2001/02/17 16:52:23 pjanzen Exp $";
1.1 deraadt 33: #endif /* not lint */
34:
35: #include <sys/types.h>
36: #include <sys/param.h>
37: #include <sys/socket.h>
38: #include <netdb.h>
1.11 pjanzen 39: #include <err.h>
1.1 deraadt 40: #include <stdio.h>
1.8 millert 41: #include <string.h>
1.1 deraadt 42: #include <rpc/rpc.h>
1.6 deraadt 43: #include <rpc/pmap_clnt.h>
1.1 deraadt 44: #include <arpa/inet.h>
45: #include <utmp.h>
46: #include <stdlib.h>
47:
48: /*
49: * For now we only try version 2 of the protocol. The current
50: * version is 3 (rusers.h), but only Solaris and NetBSD seem
51: * to support it currently.
52: */
53: #include <rpcsvc/rnusers.h> /* Old version */
54:
55: #define MAX_INT 0x7fffffff
1.11 pjanzen 56: /* Preferred formatting */
1.1 deraadt 57: #define HOST_WIDTH 20
58: #define LINE_WIDTH 8
1.11 pjanzen 59: #define NAME_WIDTH 8
1.1 deraadt 60:
61: struct timeval timeout = { 25, 0 };
62: int longopt;
63: int allopt;
64:
65: struct host_list {
66: struct host_list *next;
67: struct in_addr addr;
68: } *hosts;
69:
1.11 pjanzen 70: extern char *__progname;
71:
1.1 deraadt 72: int
73: search_host(struct in_addr addr)
74: {
75: struct host_list *hp;
76:
77: if (!hosts)
78: return(0);
79:
80: for (hp = hosts; hp != NULL; hp = hp->next) {
81: if (hp->addr.s_addr == addr.s_addr)
82: return(1);
83: }
84: return(0);
85: }
86:
87: void
88: remember_host(struct in_addr addr)
89: {
90: struct host_list *hp;
91:
1.11 pjanzen 92: if (!(hp = (struct host_list *)malloc(sizeof(struct host_list))))
93: err(1, NULL);
1.1 deraadt 94: hp->addr.s_addr = addr.s_addr;
95: hp->next = hosts;
96: hosts = hp;
97: }
98:
99: int
100: rusers_reply(char *replyp, struct sockaddr_in *raddrp)
101: {
1.11 pjanzen 102: int x, idle, i;
103: char date[32], idle_time[64], remote[UT_HOSTSIZE + 1];
104: char local[HOST_WIDTH + LINE_WIDTH + 2];
105: char utline[UT_LINESIZE + 1];
1.1 deraadt 106: struct hostent *hp;
1.4 deraadt 107: utmpidlearr *up = (utmpidlearr *)replyp;
1.11 pjanzen 108: char *host, *tmp;
1.1 deraadt 109: int days, hours, minutes, seconds;
110:
111: if (search_host(raddrp->sin_addr))
112: return(0);
113:
114: if (!allopt && !up->uia_cnt)
115: return(0);
116:
117: hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
118: sizeof(struct in_addr), AF_INET);
119: if (hp)
120: host = hp->h_name;
121: else
122: host = inet_ntoa(raddrp->sin_addr);
123:
124: if (!longopt)
125: printf("%-*.*s ", HOST_WIDTH, HOST_WIDTH, host);
126:
127: for (x = 0; x < up->uia_cnt; x++) {
1.11 pjanzen 128: strlcpy(date,
1.4 deraadt 129: &(ctime((time_t *)&(up->uia_arr[x]->ui_utmp.ut_time))[4]),
1.11 pjanzen 130: sizeof(date));
131: /* ctime() adds a trailing \n. Trimming it is only
132: * mandatory if the output formatting changes.
133: */
134: if ((tmp = strchr(date, '\n')) != NULL)
135: *tmp = '\0';
1.1 deraadt 136:
137: idle = up->uia_arr[x]->ui_idle;
138: sprintf(idle_time, " :%02d", idle);
139: if (idle == MAX_INT)
140: strcpy(idle_time, "??");
141: else if (idle == 0)
142: strcpy(idle_time, "");
143: else {
144: seconds = idle;
145: days = seconds/(60*60*24);
146: seconds %= (60*60*24);
147: hours = seconds/(60*60);
148: seconds %= (60*60);
149: minutes = seconds/60;
150: seconds %= 60;
151: if (idle > 60)
152: sprintf(idle_time, "%2d:%02d",
1.4 deraadt 153: minutes, seconds);
1.1 deraadt 154: if (idle >= (60*60))
155: sprintf(idle_time, "%2d:%02d:%02d",
1.4 deraadt 156: hours, minutes, seconds);
1.1 deraadt 157: if (idle >= (24*60*60))
158: sprintf(idle_time, "%d days, %d:%02d:%02d",
1.4 deraadt 159: days, hours, minutes, seconds);
1.1 deraadt 160: }
161:
162: strncpy(remote, up->uia_arr[x]->ui_utmp.ut_host,
163: sizeof(remote)-1);
1.11 pjanzen 164: remote[sizeof(remote) - 1] = '\0';
1.1 deraadt 165: if (strlen(remote) != 0)
1.11 pjanzen 166: snprintf(remote, UT_HOSTSIZE + 1, "(%.16s)",
1.1 deraadt 167: up->uia_arr[x]->ui_utmp.ut_host);
168:
169: if (longopt) {
170: strncpy(local, host, sizeof(local));
1.11 pjanzen 171: strncpy(utline, up->uia_arr[x]->ui_utmp.ut_line,
172: UT_LINESIZE);
173: utline[sizeof(utline) - 1] = '\0';
174: i = sizeof(local) - strlen(utline) - 2;
175: if (i < 0)
176: i = 0;
177: local[i] = '\0';
1.1 deraadt 178: strcat(local, ":");
1.11 pjanzen 179: strlcat(local, utline, sizeof(local));
1.1 deraadt 180:
1.9 deraadt 181: printf("%-*.*s %-*.*s %-12.12s %8s %.18s\n",
1.11 pjanzen 182: NAME_WIDTH, UT_NAMESIZE,
1.1 deraadt 183: up->uia_arr[x]->ui_utmp.ut_name,
1.4 deraadt 184: HOST_WIDTH+LINE_WIDTH+1, HOST_WIDTH+LINE_WIDTH+1,
185: local, date, idle_time, remote);
1.1 deraadt 186: } else
1.9 deraadt 187: printf("%.*s ", UT_NAMESIZE,
1.1 deraadt 188: up->uia_arr[x]->ui_utmp.ut_name);
189: }
190: if (!longopt)
191: putchar('\n');
192:
193: remember_host(raddrp->sin_addr);
194: return(0);
195: }
196:
197: void
198: onehost(char *host)
199: {
1.4 deraadt 200: utmpidlearr up;
1.1 deraadt 201: CLIENT *rusers_clnt;
202: struct sockaddr_in addr;
203: struct hostent *hp;
204:
205: hp = gethostbyname(host);
1.11 pjanzen 206: if (hp == NULL)
207: errx(1, "unknown host \"%s\"", host);
1.1 deraadt 208:
209: rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp");
210: if (rusers_clnt == NULL) {
1.11 pjanzen 211: clnt_pcreateerror(__progname);
1.1 deraadt 212: exit(1);
213: }
214:
215: bzero((char *)&up, sizeof(up));
216: if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL,
217: xdr_utmpidlearr, &up, timeout) != RPC_SUCCESS) {
1.11 pjanzen 218: clnt_perror(rusers_clnt, __progname);
1.12 ! deraadt 219: clnt_destroy(rusers_clnt);
1.1 deraadt 220: exit(1);
221: }
222: addr.sin_addr.s_addr = *(int *)hp->h_addr;
223: rusers_reply((char *)&up, &addr);
1.12 ! deraadt 224: clnt_destroy(rusers_clnt);
1.1 deraadt 225: }
226:
227: void
228: allhosts(void)
229: {
1.4 deraadt 230: utmpidlearr up;
1.1 deraadt 231: enum clnt_stat clnt_stat;
232:
233: bzero((char *)&up, sizeof(up));
234: clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE,
235: RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr,
1.6 deraadt 236: (char *)&up, rusers_reply);
1.11 pjanzen 237: if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
238: errx(1, "%s", clnt_sperrno(clnt_stat));
1.1 deraadt 239: }
240:
1.2 deraadt 241: void
242: usage(void)
1.1 deraadt 243: {
1.11 pjanzen 244: fprintf(stderr, "Usage: %s [-la] [hosts ...]\n", __progname);
1.1 deraadt 245: exit(1);
246: }
247:
1.2 deraadt 248: int
249: main(int argc, char *argv[])
1.1 deraadt 250: {
251: int ch;
252: extern int optind;
253:
254: while ((ch = getopt(argc, argv, "al")) != -1)
255: switch (ch) {
256: case 'a':
257: allopt++;
258: break;
259: case 'l':
260: longopt++;
261: break;
262: default:
263: usage();
264: /*NOTREACHED*/
265: }
266:
267: setlinebuf(stdout);
268: if (argc == optind)
269: allhosts();
270: else {
271: for (; optind < argc; optind++)
272: (void) onehost(argv[optind]);
273: }
274: exit(0);
275: }
![[BACK]](/icons/back.gif){kind=icon}
Return to rusers.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / rusers