rusers from FreeBSD 1.1.5.1

Reviewed by:	Geoff.
Submitted by:	John Brezak

1 files changed, 249 insertions, 0 deletions

diff --git a/usr.bin/rusers/rusers.c b/usr.bin/rusers/rusers.c
new file mode 100644
index 0000000..0346601
--- /dev/null
+++ b/usr.bin/rusers/rusers.c
@@ -0,0 +1,249 @@
+/*-
+ * Copyright (c) 1993, John Brezak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char rcsid[] = "$Id: rusers.c,v 1.1 1993/09/16 01:15:48 jtc Exp $";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <strings.h>
+#include <rpc/rpc.h>
+#include <arpa/inet.h>
+#include <rpcsvc/rnusers.h>
+
+#define MAX_INT 0x7fffffff
+#define HOST_WIDTH 20
+#define LINE_WIDTH 15
+char *argv0;
+
+int longopt;
+int allopt;
+
+struct host_list {
+	struct host_list *next;
+	struct in_addr addr;
+} *hosts;
+
+int search_host(struct in_addr addr)
+{
+	struct host_list *hp;
+	
+	if (!hosts)
+		return(0);
+
+	for (hp = hosts; hp != NULL; hp = hp->next) {
+		if (hp->addr.s_addr == addr.s_addr)
+			return(1);
+	}
+	return(0);
+}
+
+void remember_host(struct in_addr addr)
+{
+	struct host_list *hp;
+
+	if (!(hp = (struct host_list *)malloc(sizeof(struct host_list)))) {
+		fprintf(stderr, "%s: no memory.\n", argv0);
+		exit(1);
+	}
+	hp->addr.s_addr = addr.s_addr;
+	hp->next = hosts;
+	hosts = hp;
+}
+
+rusers_reply(char *replyp, struct sockaddr_in *raddrp)
+{
+        int x, idle;
+        char date[32], idle_time[64], remote[64];
+        struct hostent *hp;
+        utmpidlearr *up = (utmpidlearr *)replyp;
+        char *host;
+        int days, hours, minutes, seconds;
+        
+	if (search_host(raddrp->sin_addr))
+		return(0);
+
+        if (!allopt && !up->utmpidlearr_len)
+                return(0);
+        
+        hp = gethostbyaddr((char *)&raddrp->sin_addr.s_addr,
+                           sizeof(struct in_addr), AF_INET);
+        if (hp)
+                host = hp->h_name;
+        else
+                host = inet_ntoa(raddrp->sin_addr);
+        
+        if (!longopt)
+                printf("%-*s ", HOST_WIDTH, host);
+        
+        for (x = 0; x < up->utmpidlearr_len; x++) {
+                strncpy(date,
+                        &(ctime((time_t *)&(up->utmpidlearr_val[x].ui_utmp.ut_time))[4]),
+                        sizeof(date)-1);
+
+                idle = up->utmpidlearr_val[x].ui_idle;
+                sprintf(idle_time, "  :%02d", idle);
+                if (idle == MAX_INT)
+                        strcpy(idle_time, "??");
+                else if (idle == 0)
+                        strcpy(idle_time, "");
+                else {
+                        seconds = idle;
+                        days = seconds/(60*60*24);
+                        seconds %= (60*60*24);
+                        hours = seconds/(60*60);
+                        seconds %= (60*60);
+                        minutes = seconds/60;
+                        seconds %= 60;
+                        if (idle > 60)
+                                sprintf(idle_time, "%d:%02d",
+                                        minutes, seconds);
+                        if (idle >= (60*60))
+                                sprintf(idle_time, "%d:%02d:%02d",
+                                        hours, minutes, seconds);
+                        if (idle >= (24*60*60))
+                                sprintf(idle_time, "%d days, %d:%02d:%02d",
+                                        days, hours, minutes, seconds);
+                }
+
+                strncpy(remote, up->utmpidlearr_val[x].ui_utmp.ut_host, sizeof(remote)-1);
+                if (strlen(remote) != 0)
+                        sprintf(remote, "(%.16s)", up->utmpidlearr_val[x].ui_utmp.ut_host);
+
+                if (longopt)
+                        printf("%-8.8s %*s:%-*.*s %-12.12s  %6s %.18s\n",
+                               up->utmpidlearr_val[x].ui_utmp.ut_name,
+                               HOST_WIDTH, host,
+                               LINE_WIDTH, LINE_WIDTH, up->utmpidlearr_val[x].ui_utmp.ut_line,
+                               date,
+                               idle_time,
+                               remote
+                               );
+                else
+                        printf("%s ",
+                               up->utmpidlearr_val[x].ui_utmp.ut_name);
+        }
+        if (!longopt)
+                putchar('\n');
+        
+	remember_host(raddrp->sin_addr);
+	return(0);
+}
+
+onehost(char *host)
+{
+        utmpidlearr up;
+        CLIENT *rusers_clnt;
+        struct sockaddr_in addr;
+        struct hostent *hp;
+        
+        hp = gethostbyname(host);
+        if (hp == NULL) {
+                fprintf(stderr, "%s: unknown host \"%s\"\n",
+                        argv0, host);
+                exit(1);
+        }
+
+        rusers_clnt = clnt_create(host, RUSERSPROG, RUSERSVERS_IDLE, "udp");
+        if (rusers_clnt == NULL) {
+                clnt_pcreateerror(argv0);
+                exit(1);
+        }
+
+	bzero((char *)&up, sizeof(up));
+	if (clnt_call(rusers_clnt, RUSERSPROC_NAMES, xdr_void, NULL, xdr_utmpidlearr, &up, NULL) != RPC_SUCCESS) {
+                clnt_perror(rusers_clnt, argv0);
+                exit(1);
+        }
+        addr.sin_addr.s_addr = *(int *)hp->h_addr;
+        rusers_reply((char *)&up, &addr);
+}
+
+allhosts()
+{
+        utmpidlearr up;
+	enum clnt_stat clnt_stat;
+
+	bzero((char *)&up, sizeof(up));
+	clnt_stat = clnt_broadcast(RUSERSPROG, RUSERSVERS_IDLE, RUSERSPROC_NAMES,
+				   xdr_void, NULL,
+				   xdr_utmpidlearr, &up, rusers_reply);
+	if (clnt_stat != RPC_SUCCESS && clnt_stat != RPC_TIMEDOUT) {
+		fprintf(stderr, "%s: %s\n", argv0, clnt_sperrno(clnt_stat));
+		exit(1);
+	}
+}
+
+usage()
+{
+        fprintf(stderr, "Usage: %s [-la] [hosts ...]\n", argv0);
+        exit(1);
+}
+
+main(int argc, char *argv[])
+{
+        int ch;
+        extern int optind;
+        
+        if (!(argv0 = rindex(argv[0], '/')))
+                argv0 = argv[0];
+        else
+                argv0++;
+
+
+        while ((ch = getopt(argc, argv, "al")) != -1)
+	        switch (ch) {
+                case 'a':
+                        allopt++;
+                        break;
+                case 'l':
+                        longopt++;
+                        break;
+                default:
+                        usage();
+                        /*NOTREACHED*/
+                }
+
+        setlinebuf(stdout);
+	if (argc == optind)
+		allhosts();
+	else {
+		for (; optind < argc; optind++)
+			(void) onehost(argv[optind]);
+	}
+        exit(0);
+}