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984263bc MD |
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. | |
dc71b7ab | 13 | * 3. Neither the name of the University nor the names of its contributors |
984263bc MD |
14 | * may be used to endorse or promote products derived from this software |
15 | * without specific prior written permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
1de703da | 28 | * |
ce0e08e2 | 29 | * $FreeBSD: src/usr.bin/rusers/rusers.c,v 1.17 2005/05/21 09:55:08 ru Exp $ |
815943a9 | 30 | * $DragonFly: src/usr.bin/rusers/rusers.c,v 1.4 2008/10/16 01:52:33 swildner Exp $ |
984263bc MD |
31 | */ |
32 | ||
984263bc MD |
33 | #include <sys/types.h> |
34 | #include <sys/socket.h> | |
ce0e08e2 | 35 | |
984263bc MD |
36 | #include <rpc/rpc.h> |
37 | #include <rpc/pmap_clnt.h> | |
38 | #include <rpcsvc/rnusers.h> | |
ce0e08e2 | 39 | |
984263bc | 40 | #include <arpa/inet.h> |
ce0e08e2 | 41 | |
984263bc MD |
42 | #include <err.h> |
43 | #include <netdb.h> | |
44 | #include <stdio.h> | |
45 | #include <stdlib.h> | |
ce0e08e2 | 46 | #include <string.h> |
984263bc MD |
47 | #include <unistd.h> |
48 | ||
49 | #define MAX_INT 0x7fffffff | |
50 | #define HOST_WIDTH 20 | |
51 | #define LINE_WIDTH 15 | |
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 | ||
ce0e08e2 | 61 | static int |
984263bc MD |
62 | search_host(struct in_addr addr) |
63 | { | |
64 | struct host_list *hp; | |
65 | ||
66 | if (hosts == NULL) | |
67 | return (0); | |
68 | ||
69 | for (hp = hosts; hp != NULL; hp = hp->next) { | |
70 | if (hp->addr.s_addr == addr.s_addr) | |
71 | return (1); | |
72 | } | |
73 | return (0); | |
74 | } | |
75 | ||
ce0e08e2 | 76 | static void |
984263bc MD |
77 | remember_host(struct in_addr addr) |
78 | { | |
79 | struct host_list *hp; | |
80 | ||
81 | if ((hp = (struct host_list *)malloc(sizeof(struct host_list))) == NULL) | |
82 | errx(1, "no memory"); | |
83 | hp->addr.s_addr = addr.s_addr; | |
84 | hp->next = hosts; | |
85 | hosts = hp; | |
86 | } | |
87 | ||
ce0e08e2 PA |
88 | static int |
89 | rusers_reply(caddr_t replyp, struct sockaddr_in *raddrp) | |
984263bc | 90 | { |
ce0e08e2 PA |
91 | u_int x; |
92 | int idle; | |
984263bc MD |
93 | char date[32], idle_time[64], remote[64]; |
94 | struct hostent *hp; | |
ce0e08e2 | 95 | utmpidlearr *up, u; |
984263bc MD |
96 | char *host; |
97 | int days, hours, minutes, seconds; | |
98 | ||
ce0e08e2 PA |
99 | up = &u; |
100 | memcpy(up, replyp, sizeof(*up)); | |
984263bc MD |
101 | if (search_host(raddrp->sin_addr)) |
102 | return (0); | |
103 | ||
104 | if (!allopt && up->utmpidlearr_len == 0) | |
105 | return (0); | |
106 | ||
15b85273 SW |
107 | hp = gethostbyaddr(&raddrp->sin_addr.s_addr, sizeof(struct in_addr), |
108 | AF_INET); | |
984263bc MD |
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 | strncpy(date, | |
119 | &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[4]), | |
120 | sizeof(date) - 1); | |
121 | ||
122 | idle = up->utmpidlearr_val[x].ui_idle; | |
123 | sprintf(idle_time, " :%02d", idle); | |
124 | if (idle == MAX_INT) | |
125 | strcpy(idle_time, "??"); | |
126 | else if (idle == 0) | |
127 | strcpy(idle_time, ""); | |
128 | else { | |
129 | seconds = idle; | |
130 | days = seconds / (60 * 60 * 24); | |
131 | seconds %= (60 * 60 * 24); | |
132 | hours = seconds / (60 * 60); | |
133 | seconds %= (60 * 60); | |
134 | minutes = seconds / 60; | |
135 | seconds %= 60; | |
136 | if (idle > 60) | |
137 | sprintf(idle_time, "%d:%02d", minutes, seconds); | |
138 | if (idle >= (60 * 60)) | |
139 | sprintf(idle_time, "%d:%02d:%02d", | |
140 | hours, minutes, seconds); | |
141 | if (idle >= (24 * 60 * 60)) | |
142 | sprintf(idle_time, "%d days, %d:%02d:%02d", | |
143 | days, hours, minutes, seconds); | |
144 | } | |
145 | ||
146 | strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host, | |
147 | sizeof(remote) - 1); | |
148 | if (strlen(remote) != 0) | |
149 | sprintf(remote, "(%.16s)", | |
150 | up->utmpidlearr_val[x].ui_utmp.ut_host); | |
151 | ||
152 | if (longopt) | |
153 | printf("%-8.8s %*s:%-*.*s %-12.12s %6s %.18s\n", | |
154 | up->utmpidlearr_val[x].ui_utmp.ut_name, | |
155 | HOST_WIDTH, host, LINE_WIDTH, LINE_WIDTH, | |
156 | up->utmpidlearr_val[x].ui_utmp.ut_line, date, | |
157 | idle_time, remote ); | |
158 | else | |
159 | printf("%s ", | |
160 | up->utmpidlearr_val[x].ui_utmp.ut_name); | |
161 | } | |
162 | if (!longopt) | |
163 | putchar('\n'); | |
164 | ||
165 | remember_host(raddrp->sin_addr); | |
166 | return (0); | |
167 | } | |
168 | ||
ce0e08e2 | 169 | static void |
984263bc MD |
170 | onehost(char *host) |
171 | { | |
172 | utmpidlearr up; | |
173 | CLIENT *rusers_clnt; | |
174 | struct sockaddr_in addr; | |
175 | struct hostent *hp; | |
176 | struct timeval tv; | |
177 | ||
178 | hp = gethostbyname(host); | |
179 | if (hp == NULL) | |
180 | errx(1, "unknown host \"%s\"", host); | |
181 | ||
182 | rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp"); | |
183 | if (rusers_clnt == NULL) | |
184 | errx(1, "%s", clnt_spcreateerror("")); | |
185 | ||
186 | bzero((char *)&up, sizeof(up)); | |
187 | tv.tv_sec = 15; /* XXX ?? */ | |
188 | tv.tv_usec = 0; | |
ce0e08e2 PA |
189 | if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, (xdrproc_t)xdr_void, NULL, |
190 | (xdrproc_t)xdr_utmpidlearr, &up, tv) != RPC_SUCCESS) | |
984263bc | 191 | errx(1, "%s", clnt_sperror(rusers_clnt, "")); |
ce0e08e2 PA |
192 | memcpy(&addr.sin_addr.s_addr, hp->h_addr, sizeof(addr.sin_addr.s_addr)); |
193 | rusers_reply((caddr_t)&up, &addr); | |
984263bc MD |
194 | clnt_destroy(rusers_clnt); |
195 | } | |
196 | ||
ce0e08e2 | 197 | static void |
815943a9 | 198 | allhosts(void) |
984263bc MD |
199 | { |
200 | utmpidlearr up; | |
201 | enum clnt_stat clnt_stat; | |
202 | ||
203 | bzero((char *)&up, sizeof(up)); | |
204 | clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, | |
ce0e08e2 PA |
205 | RUSERSPROC_NAMES, (xdrproc_t)xdr_void, NULL, |
206 | (xdrproc_t)xdr_utmpidlearr, (char *)&up, | |
207 | (resultproc_t)rusers_reply); | |
984263bc MD |
208 | if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) |
209 | errx(1, "%s", clnt_sperrno(clnt_stat)); | |
210 | } | |
211 | ||
212 | static void | |
815943a9 | 213 | usage(void) |
984263bc MD |
214 | { |
215 | ||
ce0e08e2 | 216 | fprintf(stderr, "usage: rusers [-al] [host ...]\n"); |
984263bc MD |
217 | exit(1); |
218 | } | |
219 | ||
220 | int | |
221 | main(int argc, char *argv[]) | |
222 | { | |
223 | int ch; | |
224 | ||
225 | while ((ch = getopt(argc, argv, "al")) != -1) | |
226 | switch (ch) { | |
227 | case 'a': | |
228 | allopt++; | |
229 | break; | |
230 | case 'l': | |
231 | longopt++; | |
232 | break; | |
233 | default: | |
234 | usage(); | |
235 | /* NOTREACHED */ | |
236 | } | |
237 | ||
238 | setlinebuf(stdout); | |
239 | if (argc == optind) | |
240 | allhosts(); | |
241 | else { | |
242 | for (; optind < argc; optind++) | |
ce0e08e2 | 243 | onehost(argv[optind]); |
984263bc MD |
244 | } |
245 | exit(0); | |
246 | } |