2
* $Id: achfile.c,v 1.5 2001/10/19 02:39:07 jmarcus Exp $
4
afile - determine the MacOS creator/type of files
6
Copyright (C) 2001 Sebastian Rittau.
9
This file may be distributed and/or modfied under the terms of the
12
Redistribution and use in source and binary forms, with or without
13
modification, are permitted provided that the following conditions
15
1. Redistributions of source code must retain the above copyright
16
notice, this list of conditions and the following disclaimer.
17
2. Redistributions in binary form must reproduce the above copyright
18
notice, this list of conditions and the following disclaimer in the
19
documentation and/or other materials provided with the distribution.
20
3. Neither the name of the author 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.
24
THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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
39
#endif /* HAVE_CONFIG_H */
45
#include <sys/types.h>
49
#endif /* HAVE_FCNTL_H */
52
#endif /* HAVE_UNISTD_H */
54
#include <atalk/adouble.h>
58
/* Global Variables */
59
const char *type = NULL;
60
const char *creator = NULL;
63
/* Print usage information. */
64
void usage(char *prog)
66
fprintf(stderr, "Usage: %s [-t TYPE] [-c CREATOR] FILE ...\n", prog);
69
/* Print extensive help. */
75
"Change the MacOS creator/type of FILEs.\n"
77
" -t, --type=TYPE choose type\n"
78
" -c, --creator=CREATOR choose creator\n"
79
" -h, --help show this help and exit\n"
80
" -v, --version show version information and exit\n");
83
/* Print the version. */
86
fprintf(stderr, "achfile (netatalk " VERSION ")\n");
90
* known options: -t, -c, -h, -v
91
* known long options: --help, --version
93
#define OPTSTRING "t:c:hv-:"
94
const char *get_long_arg(int argc, char *argv[], const char *arg, const char *oa) {
100
fprintf(stderr, "%s: option \'%s\' requires an argument\n", argv[0], arg);
103
return argv[optind++];
105
fprintf(stderr, "%s: unrecognized option \'%s\'\n", argv[0], arg);
111
int parse_args(int argc, char *argv[])
116
/* iterate through the command line */
117
while ((c = getopt(argc, argv, OPTSTRING)) != -1) {
132
if (strcmp(optarg, "help") == 0) {
136
if (strcmp(optarg, "version") == 0) {
140
if (strncmp(optarg, "type", 4) == 0) {
141
longarg = get_long_arg(argc, argv, "type", &optarg[4]);
145
} else if (strncmp(optarg, "creator", 7) == 0) {
146
longarg = get_long_arg(argc, argv, "creator", &optarg[7]);
158
/* At least one file argument is required. */
159
if (argc == optind) {
164
/* Either type or creator is required. */
165
if (!type && !creator) {
166
fprintf(stderr, "achfile: either type or creator must be specified\n");
170
/* Type and creator must be exactly four characters long. */
171
if ((type && strlen(type) != 4) || (creator && strlen(creator) != 4)) {
172
fprintf(stderr, "achfile: type and creator must be four character IDs\n");
180
/* Change the owner/creator of each file specified on the command line. */
181
int handle_file(const char *filename)
188
struct adouble *ad = (struct adouble *) &buf;
190
if (stat(filename, &statbuf) == -1) {
191
fprintf(stderr, "achfile:%s: %s\n", filename, strerror(errno));
195
adname = dataname_to_adname(filename);
196
fd = open(adname, O_RDWR, 0);
199
fprintf(stderr, "achfile:%s: no resource fork\n", filename);
201
fprintf(stderr, "achfile:%s: %s\n", adname, strerror(errno));
205
sz = read(fd, buf, AD_DATASZ);
207
fprintf(stderr, "achfile:%s: %s\n", adname, strerror(errno));
211
} else if (sz < AD_DATASZ) {
212
fprintf(stderr, "achfile:%s: corrupt resource fork\n", filename);
217
if ( ntohl(ad->ad_magic) != AD_MAGIC) {
218
fprintf(stderr, "achfile:%s: corrupt resource fork\n", filename);
226
buf[ADEDOFF_FINDERI + 0] = type[0];
227
buf[ADEDOFF_FINDERI + 1] = type[1];
228
buf[ADEDOFF_FINDERI + 2] = type[2];
229
buf[ADEDOFF_FINDERI + 3] = type[3];
234
buf[ADEDOFF_FINDERI + 4] = creator[0];
235
buf[ADEDOFF_FINDERI + 5] = creator[1];
236
buf[ADEDOFF_FINDERI + 6] = creator[2];
237
buf[ADEDOFF_FINDERI + 7] = creator[3];
240
/* Write file back to disk. */
241
if (lseek(fd, 0, SEEK_SET) == -1) {
242
fprintf(stderr, "achfile:%s: %s\n", adname, strerror(errno));
247
if (write(fd, &buf, AD_DATASZ) < AD_DATASZ) {
248
fprintf(stderr, "achfile:%s: %s\n", adname, strerror(errno));
262
int main(int argc, char *argv[])
264
/* argument handling */
265
if (parse_args(argc, argv) == -1)
268
while (optind < argc)
269
handle_file(argv[optind++]);