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 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 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