Remove some unnecessary casts.
[dragonfly.git] / usr.bin / rusers / rusers.c
CommitLineData
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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.
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32 *
33 * $FreeBSD: src/usr.bin/rusers/rusers.c,v 1.8.2.1 2001/07/02 23:43:05 mikeh Exp $
815943a9 34 * $DragonFly: src/usr.bin/rusers/rusers.c,v 1.4 2008/10/16 01:52:33 swildner Exp $
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35 */
36
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37#include <sys/types.h>
38#include <sys/socket.h>
39#include <rpc/rpc.h>
40#include <rpc/pmap_clnt.h>
41#include <rpcsvc/rnusers.h>
42#include <arpa/inet.h>
43#include <err.h>
44#include <netdb.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <strings.h>
48#include <unistd.h>
49
50#define MAX_INT 0x7fffffff
51#define HOST_WIDTH 20
52#define LINE_WIDTH 15
53
54int longopt;
55int allopt;
56
57struct host_list {
58 struct host_list *next;
59 struct in_addr addr;
60} *hosts;
61
62int
63search_host(struct in_addr addr)
64{
65 struct host_list *hp;
66
67 if (hosts == NULL)
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
77void
78remember_host(struct in_addr addr)
79{
80 struct host_list *hp;
81
82 if ((hp = (struct host_list *)malloc(sizeof(struct host_list))) == NULL)
83 errx(1, "no memory");
84 hp->addr.s_addr = addr.s_addr;
85 hp->next = hosts;
86 hosts = hp;
87}
88
89int
90rusers_reply(char *replyp, struct sockaddr_in *raddrp)
91{
92 int x, idle;
93 char date[32], idle_time[64], remote[64];
94 struct hostent *hp;
ca93da31 95 utmpidlearr *up, u;
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96 char *host;
97 int days, hours, minutes, seconds;
98
99 if (search_host(raddrp->sin_addr))
100 return (0);
101
102 if (!allopt && up->utmpidlearr_len == 0)
103 return (0);
104
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105 hp = gethostbyaddr(&raddrp->sin_addr.s_addr, sizeof(struct in_addr),
106 AF_INET);
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107 if (hp != NULL)
108 host = hp->h_name;
109 else
110 host = inet_ntoa(raddrp->sin_addr);
111
112 if (!longopt)
113 printf("%-*s ", HOST_WIDTH, host);
114
115 for (x = 0; x < up->utmpidlearr_len; x++) {
116 strncpy(date,
117 &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[4]),
118 sizeof(date) - 1);
119
120 idle = up->utmpidlearr_val[x].ui_idle;
121 sprintf(idle_time, " :%02d", idle);
122 if (idle == MAX_INT)
123 strcpy(idle_time, "??");
124 else if (idle == 0)
125 strcpy(idle_time, "");
126 else {
127 seconds = idle;
128 days = seconds / (60 * 60 * 24);
129 seconds %= (60 * 60 * 24);
130 hours = seconds / (60 * 60);
131 seconds %= (60 * 60);
132 minutes = seconds / 60;
133 seconds %= 60;
134 if (idle > 60)
135 sprintf(idle_time, "%d:%02d", minutes, seconds);
136 if (idle >= (60 * 60))
137 sprintf(idle_time, "%d:%02d:%02d",
138 hours, minutes, seconds);
139 if (idle >= (24 * 60 * 60))
140 sprintf(idle_time, "%d days, %d:%02d:%02d",
141 days, hours, minutes, seconds);
142 }
143
144 strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host,
145 sizeof(remote) - 1);
146 if (strlen(remote) != 0)
147 sprintf(remote, "(%.16s)",
148 up->utmpidlearr_val[x].ui_utmp.ut_host);
149
150 if (longopt)
151 printf("%-8.8s %*s:%-*.*s %-12.12s %6s %.18s\n",
152 up->utmpidlearr_val[x].ui_utmp.ut_name,
153 HOST_WIDTH, host, LINE_WIDTH, LINE_WIDTH,
154 up->utmpidlearr_val[x].ui_utmp.ut_line, date,
155 idle_time, remote );
156 else
157 printf("%s ",
158 up->utmpidlearr_val[x].ui_utmp.ut_name);
159 }
160 if (!longopt)
161 putchar('\n');
162
163 remember_host(raddrp->sin_addr);
164 return (0);
165}
166
167void
168onehost(char *host)
169{
170 utmpidlearr up;
171 CLIENT *rusers_clnt;
172 struct sockaddr_in addr;
173 struct hostent *hp;
174 struct timeval tv;
175
176 hp = gethostbyname(host);
177 if (hp == NULL)
178 errx(1, "unknown host \"%s\"", host);
179
180 rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp");
181 if (rusers_clnt == NULL)
182 errx(1, "%s", clnt_spcreateerror(""));
183
184 bzero((char *)&up, sizeof(up));
185 tv.tv_sec = 15; /* XXX ?? */
186 tv.tv_usec = 0;
187 if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL,
188 xdr_utmpidlearr, &up, tv) != RPC_SUCCESS)
189 errx(1, "%s", clnt_sperror(rusers_clnt, ""));
ca93da31 190 memcpy(&addr.sin_addr.s_addr, hp->h_addr, sizeof(addr.sin_addr.s_addr));
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191 rusers_reply((char *)&up, &addr);
192 clnt_destroy(rusers_clnt);
193}
194
195void
815943a9 196allhosts(void)
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197{
198 utmpidlearr up;
199 enum clnt_stat clnt_stat;
200
201 bzero((char *)&up, sizeof(up));
202 clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE,
203 RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, (char *)&up,
204 rusers_reply);
205 if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT)
206 errx(1, "%s", clnt_sperrno(clnt_stat));
207}
208
209static void
815943a9 210usage(void)
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211{
212
213 fprintf(stderr, "usage: rusers [-la] [hosts ...]\n");
214 exit(1);
215}
216
217int
218main(int argc, char *argv[])
219{
220 int ch;
221
222 while ((ch = getopt(argc, argv, "al")) != -1)
223 switch (ch) {
224 case 'a':
225 allopt++;
226 break;
227 case 'l':
228 longopt++;
229 break;
230 default:
231 usage();
232 /* NOTREACHED */
233 }
234
235 setlinebuf(stdout);
236 if (argc == optind)
237 allhosts();
238 else {
239 for (; optind < argc; optind++)
240 (void)onehost(argv[optind]);
241 }
242 exit(0);
243}