1/* 2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23/* $OpenBSD: replace.c,v 1.2 1996/06/26 05:31:23 deraadt Exp $ */ 24/* $NetBSD: replace.c,v 1.6 1995/03/26 03:28:01 glass Exp $ */ 25 26/*- 27 * Copyright (c) 1990, 1993, 1994 28 * The Regents of the University of California. All rights reserved. 29 * 30 * This code is derived from software contributed to Berkeley by 31 * Hugh Smith at The University of Guelph. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by the University of 44 * California, Berkeley and its contributors. 45 * 4. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 */ 61 62#ifndef lint 63#if 0 64static char sccsid[] = "@(#)replace.c 8.3 (Berkeley) 4/2/94"; 65static char rcsid[] = "$OpenBSD: replace.c,v 1.2 1996/06/26 05:31:23 deraadt Exp $"; 66#endif 67#endif /* not lint */ 68 69#include <sys/param.h> 70#include <sys/stat.h> 71 72#include <ar.h> 73#include <dirent.h> 74#include <err.h> 75#include <fcntl.h> 76#include <stdio.h> 77#include <string.h> 78#include <unistd.h> 79 80#include "archive.h" 81#include "extern.h" 82 83/* 84 * replace -- 85 * Replace or add named members to archive. Entries already in the 86 * archive are swapped in place. Others are added before or after 87 * the key entry, based on the a, b and i options. If the u option 88 * is specified, modification dates select for replacement. 89 */ 90int 91replace(argv) 92 char **argv; 93{ 94 char *file; 95 int afd, curfd, errflg, exists, mods, sfd, tfd1, tfd2; 96 struct stat sb; 97 CF cf; 98 off_t size, tsize; 99 100 tsize = 0; 101 errflg = 0; 102 /* 103 * If doesn't exist, simply append to the archive. There's 104 * a race here, but it's pretty short, and not worth fixing. 105 */ 106 exists = !stat(archive, &sb); 107 afd = open_archive(O_CREAT|O_RDWR); 108 109 if (!exists) { 110 tfd1 = -1; 111 tfd2 = tmp(); 112 goto append; 113 } 114 115 tfd1 = tmp(); /* Files before key file. */ 116 tfd2 = tmp(); /* Files after key file. */ 117 118 /* 119 * Break archive into two parts -- entries before and after the key 120 * entry. If positioning before the key, place the key at the 121 * beginning of the after key entries and if positioning after the 122 * key, place the key at the end of the before key entries. Put it 123 * all back together at the end. 124 */ 125 mods = (options & (AR_A|AR_B)); 126 for (curfd = tfd1; get_arobj(afd);) { 127 if (*argv && (file = files(argv))) { 128 if ((sfd = open(file, O_RDONLY)) < 0) { 129 errflg = 1; 130 warn("%s", file); 131 goto useold; 132 } 133 (void)fstat(sfd, &sb); 134 if (options & AR_U && sb.st_mtime <= chdr.date) { 135 close(sfd); 136 goto useold; 137 } 138 139 if (options & AR_V) 140 (void)printf("r - %s\n", file); 141 142 /* Read from disk, write to an archive; pad on write */ 143 SETCF(sfd, file, curfd, tname, WPAD); 144 put_arobj(&cf, &sb); 145 (void)close(sfd); 146 skip_arobj(afd); 147 continue; 148 } 149 150 if (mods && compare(posname)) { 151 mods = 0; 152 if (options & AR_B) 153 curfd = tfd2; 154 /* Read and write to an archive; pad on both. */ 155 SETCF(afd, archive, curfd, tname, RPAD|WPAD); 156 put_arobj(&cf, (struct stat *)NULL); 157 if (options & AR_A) 158 curfd = tfd2; 159 } else { 160 /* Read and write to an archive; pad on both. */ 161useold: SETCF(afd, archive, curfd, tname, RPAD|WPAD); 162 put_arobj(&cf, (struct stat *)NULL); 163 } 164 } 165 166 if (mods) { 167 warnx("%s: archive member not found", posarg); 168 close_archive(afd); 169 return (1); 170 } 171 172 /* Append any left-over arguments to the end of the after file. */ 173append: while ((file = *argv++)) { 174 if (options & AR_V) 175 (void)printf("a - %s\n", file); 176 if ((sfd = open(file, O_RDONLY)) < 0) { 177 errflg = 1; 178 warn("%s", file); 179 continue; 180 } 181 (void)fstat(sfd, &sb); 182 /* Read from disk, write to an archive; pad on write. */ 183 SETCF(sfd, file, 184 options & (AR_A|AR_B) ? tfd1 : tfd2, tname, WPAD); 185 put_arobj(&cf, &sb); 186 (void)close(sfd); 187 } 188 189 (void)lseek(afd, (off_t)SARMAG, SEEK_SET); 190 191 SETCF(tfd1, tname, afd, archive, NOPAD); 192 if (tfd1 != -1) { 193 tsize = size = lseek(tfd1, (off_t)0, SEEK_CUR); 194 (void)lseek(tfd1, (off_t)0, SEEK_SET); 195 copy_ar(&cf, size); 196 } else 197 tsize = 0; 198 199 tsize += size = lseek(tfd2, (off_t)0, SEEK_CUR); 200 (void)lseek(tfd2, (off_t)0, SEEK_SET); 201 cf.rfd = tfd2; 202 copy_ar(&cf, size); 203 204 (void)ftruncate(afd, tsize + SARMAG); 205 close_archive(afd); 206 return (errflg); 207} 208