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c2fd5c94 WJ |
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 | } |