| 1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This code is derived from software contributed to Berkeley by |
| 6 | * Hugh Smith at The University of Guelph. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. All advertising materials mentioning features or use of this software |
| 17 | * must display the following acknowledgement: |
| 18 | * This product includes software developed by the University of |
| 19 | * California, Berkeley and its contributors. |
| 20 | * 4. Neither the name of the University nor the names of its contributors |
| 21 | * may be used to endorse or promote products derived from this software |
| 22 | * without specific prior written permission. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | * SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #ifndef lint |
| 38 | static char sccsid[] = "@(#)extract.c 5.5 (Berkeley) 3/12/91"; |
| 39 | #endif /* not lint */ |
| 40 | |
| 41 | #include <sys/param.h> |
| 42 | #include <sys/time.h> |
| 43 | #include <sys/stat.h> |
| 44 | #include <fcntl.h> |
| 45 | #include <errno.h> |
| 46 | #include <dirent.h> |
| 47 | #include <unistd.h> |
| 48 | #include <stdio.h> |
| 49 | #include <string.h> |
| 50 | #include "archive.h" |
| 51 | #include "extern.h" |
| 52 | |
| 53 | extern CHDR chdr; /* converted header */ |
| 54 | extern char *archive; /* archive name */ |
| 55 | |
| 56 | /* |
| 57 | * extract -- |
| 58 | * Extract files from the named archive - if member names given only |
| 59 | * extract those members otherwise extract all members. If 'o' option |
| 60 | * selected modify date of newly created file to be same as archive |
| 61 | * members date otherwise date is time of extraction. Does not modify |
| 62 | * archive. |
| 63 | */ |
| 64 | extract(argv) |
| 65 | char **argv; |
| 66 | { |
| 67 | register int afd, all, tfd; |
| 68 | struct timeval tv[2]; |
| 69 | struct stat sb; |
| 70 | CF cf; |
| 71 | int eval; |
| 72 | char *file; |
| 73 | |
| 74 | eval = 0; |
| 75 | tv[0].tv_usec = tv[1].tv_usec = 0; |
| 76 | |
| 77 | afd = open_archive(O_RDONLY); |
| 78 | |
| 79 | /* Read from an archive, write to disk; pad on read. */ |
| 80 | SETCF(afd, archive, 0, 0, RPAD); |
| 81 | for (all = !*argv; get_arobj(afd);) { |
| 82 | if (all) |
| 83 | file = chdr.name; |
| 84 | else if (!(file = files(argv))) { |
| 85 | skip_arobj(afd); |
| 86 | continue; |
| 87 | } |
| 88 | |
| 89 | if (options & AR_U && !stat(file, &sb) && |
| 90 | sb.st_mtime > chdr.date) |
| 91 | continue; |
| 92 | |
| 93 | if ((tfd = open(file, O_WRONLY|O_CREAT|O_TRUNC, S_IWUSR)) < 0) { |
| 94 | (void)fprintf(stderr, "ar: %s: %s.\n", |
| 95 | file, strerror(errno)); |
| 96 | skip_arobj(afd); |
| 97 | eval = 1; |
| 98 | continue; |
| 99 | } |
| 100 | |
| 101 | if (options & AR_V) |
| 102 | (void)printf("x - %s\n", file); |
| 103 | |
| 104 | cf.wfd = tfd; |
| 105 | cf.wname = file; |
| 106 | copy_ar(&cf, chdr.size); |
| 107 | |
| 108 | if (fchmod(tfd, (short)chdr.mode)) { |
| 109 | (void)fprintf(stderr, "ar: %s: chmod: %s\n", |
| 110 | file, strerror(errno)); |
| 111 | eval = 1; |
| 112 | } |
| 113 | if (options & AR_O) { |
| 114 | tv[0].tv_sec = tv[1].tv_sec = chdr.date; |
| 115 | if (utimes(file, tv)) { |
| 116 | (void)fprintf(stderr, "ar: %s: utimes: %s\n", |
| 117 | file, strerror(errno)); |
| 118 | eval = 1; |
| 119 | } |
| 120 | } |
| 121 | (void)close(tfd); |
| 122 | if (!all && !*argv) |
| 123 | break; |
| 124 | } |
| 125 | close_archive(afd); |
| 126 | |
| 127 | if (*argv) { |
| 128 | orphans(argv); |
| 129 | return(1); |
| 130 | } |
| 131 | return(0); |
| 132 | } |