17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
217c478bd9Sstevel@tonic-gate */
227c478bd9Sstevel@tonic-gate /*
23*740638c8Sbw * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
287c478bd9Sstevel@tonic-gate /* All Rights Reserved */
297c478bd9Sstevel@tonic-gate
307c478bd9Sstevel@tonic-gate /*
317c478bd9Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 4.3 BSD
327c478bd9Sstevel@tonic-gate * under license from the Regents of the University of California.
337c478bd9Sstevel@tonic-gate */
347c478bd9Sstevel@tonic-gate
357c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
367c478bd9Sstevel@tonic-gate
377c478bd9Sstevel@tonic-gate /*
387c478bd9Sstevel@tonic-gate * Finger server.
397c478bd9Sstevel@tonic-gate */
407c478bd9Sstevel@tonic-gate #include <sys/types.h>
417c478bd9Sstevel@tonic-gate #include <netinet/in.h>
427c478bd9Sstevel@tonic-gate #include <sys/socket.h>
437c478bd9Sstevel@tonic-gate #include <stdio.h>
447c478bd9Sstevel@tonic-gate #include <ctype.h>
457c478bd9Sstevel@tonic-gate
467c478bd9Sstevel@tonic-gate #define MAXARGS 10
477c478bd9Sstevel@tonic-gate
48*740638c8Sbw void fatal(char *prog, char *s);
49*740638c8Sbw
50*740638c8Sbw int
main(argc,argv)517c478bd9Sstevel@tonic-gate main(argc, argv)
52*740638c8Sbw int argc;
537c478bd9Sstevel@tonic-gate char *argv[];
547c478bd9Sstevel@tonic-gate {
557c478bd9Sstevel@tonic-gate register char *sp;
567c478bd9Sstevel@tonic-gate char line[512];
577c478bd9Sstevel@tonic-gate struct sockaddr_storage sin;
587c478bd9Sstevel@tonic-gate pid_t pid, w;
597c478bd9Sstevel@tonic-gate int i, p[2], status;
607c478bd9Sstevel@tonic-gate FILE *fp;
617c478bd9Sstevel@tonic-gate char *av[MAXARGS + 1];
627c478bd9Sstevel@tonic-gate
637c478bd9Sstevel@tonic-gate i = sizeof (sin);
647c478bd9Sstevel@tonic-gate if (getpeername(0, (struct sockaddr *)&sin, &i) < 0)
657c478bd9Sstevel@tonic-gate fatal(argv[0], "getpeername");
667c478bd9Sstevel@tonic-gate line[0] = '\0';
677c478bd9Sstevel@tonic-gate if (fgets(line, sizeof (line), stdin) == NULL)
687c478bd9Sstevel@tonic-gate exit(1);
697c478bd9Sstevel@tonic-gate sp = line;
707c478bd9Sstevel@tonic-gate av[0] = "finger";
717c478bd9Sstevel@tonic-gate i = 1;
727c478bd9Sstevel@tonic-gate
737c478bd9Sstevel@tonic-gate /* skip past leading white space */
747c478bd9Sstevel@tonic-gate while (isspace(*sp))
757c478bd9Sstevel@tonic-gate sp++;
767c478bd9Sstevel@tonic-gate
777c478bd9Sstevel@tonic-gate /*
787c478bd9Sstevel@tonic-gate * The finger protocol says a "/W" switch means verbose output.
797c478bd9Sstevel@tonic-gate * We explicitly set either the "long" or "short" output flags
807c478bd9Sstevel@tonic-gate * to the finger program so that we don't have to know what what
817c478bd9Sstevel@tonic-gate * the "finger" program's default is.
827c478bd9Sstevel@tonic-gate */
837c478bd9Sstevel@tonic-gate if (*sp == '/' && (sp[1] == 'W' || sp[1] == 'w')) {
847c478bd9Sstevel@tonic-gate sp += 2;
857c478bd9Sstevel@tonic-gate av[i++] = "-l";
867c478bd9Sstevel@tonic-gate } else {
877c478bd9Sstevel@tonic-gate av[i++] = "-s";
887c478bd9Sstevel@tonic-gate }
897c478bd9Sstevel@tonic-gate
907c478bd9Sstevel@tonic-gate /* look for username arguments */
917c478bd9Sstevel@tonic-gate while (i < MAXARGS) {
927c478bd9Sstevel@tonic-gate
937c478bd9Sstevel@tonic-gate /* skip over leading white space */
947c478bd9Sstevel@tonic-gate while (isspace(*sp))
957c478bd9Sstevel@tonic-gate sp++;
967c478bd9Sstevel@tonic-gate
977c478bd9Sstevel@tonic-gate /* check for end of "command line" */
987c478bd9Sstevel@tonic-gate if (*sp == '\0')
997c478bd9Sstevel@tonic-gate break;
1007c478bd9Sstevel@tonic-gate
1017c478bd9Sstevel@tonic-gate /* pick up another name argument */
1027c478bd9Sstevel@tonic-gate av[i++] = sp;
1037c478bd9Sstevel@tonic-gate while ((*sp != '\0') && !isspace(*sp))
1047c478bd9Sstevel@tonic-gate sp++;
1057c478bd9Sstevel@tonic-gate
1067c478bd9Sstevel@tonic-gate /* check again for end of "command line" */
1077c478bd9Sstevel@tonic-gate if (*sp == '\0')
1087c478bd9Sstevel@tonic-gate break;
1097c478bd9Sstevel@tonic-gate else
1107c478bd9Sstevel@tonic-gate *sp++ = '\0';
1117c478bd9Sstevel@tonic-gate }
1127c478bd9Sstevel@tonic-gate
1137c478bd9Sstevel@tonic-gate av[i] = (char *)0;
1147c478bd9Sstevel@tonic-gate if (pipe(p) < 0)
1157c478bd9Sstevel@tonic-gate fatal(argv[0], "pipe");
1167c478bd9Sstevel@tonic-gate
1177c478bd9Sstevel@tonic-gate if ((pid = fork()) == 0) {
1187c478bd9Sstevel@tonic-gate close(p[0]);
1197c478bd9Sstevel@tonic-gate if (p[1] != 1) {
1207c478bd9Sstevel@tonic-gate dup2(p[1], 1);
1217c478bd9Sstevel@tonic-gate close(p[1]);
1227c478bd9Sstevel@tonic-gate }
1237c478bd9Sstevel@tonic-gate execv("/usr/bin/finger", av);
1247c478bd9Sstevel@tonic-gate printf("No local finger program found\n");
1257c478bd9Sstevel@tonic-gate fflush(stdout);
1267c478bd9Sstevel@tonic-gate _exit(1);
1277c478bd9Sstevel@tonic-gate }
1287c478bd9Sstevel@tonic-gate if (pid == (pid_t)-1)
1297c478bd9Sstevel@tonic-gate fatal(argv[0], "fork");
1307c478bd9Sstevel@tonic-gate close(p[1]);
1317c478bd9Sstevel@tonic-gate if ((fp = fdopen(p[0], "r")) == NULL)
1327c478bd9Sstevel@tonic-gate fatal(argv[0], "fdopen");
1337c478bd9Sstevel@tonic-gate while ((i = getc(fp)) != EOF) {
1347c478bd9Sstevel@tonic-gate if (i == '\n')
1357c478bd9Sstevel@tonic-gate putchar('\r');
1367c478bd9Sstevel@tonic-gate putchar(i);
1377c478bd9Sstevel@tonic-gate }
1387c478bd9Sstevel@tonic-gate fclose(fp);
1397c478bd9Sstevel@tonic-gate while ((w = wait(&status)) != pid && w != (pid_t)-1)
1407c478bd9Sstevel@tonic-gate ;
1417c478bd9Sstevel@tonic-gate return (0);
1427c478bd9Sstevel@tonic-gate }
1437c478bd9Sstevel@tonic-gate
144*740638c8Sbw void
fatal(prog,s)1457c478bd9Sstevel@tonic-gate fatal(prog, s)
1467c478bd9Sstevel@tonic-gate char *prog, *s;
1477c478bd9Sstevel@tonic-gate {
1487c478bd9Sstevel@tonic-gate
1497c478bd9Sstevel@tonic-gate fprintf(stderr, "%s: ", prog);
1507c478bd9Sstevel@tonic-gate perror(s);
1517c478bd9Sstevel@tonic-gate exit(1);
1527c478bd9Sstevel@tonic-gate }
153