/*
- * Copyright 1998 The University of Newcastle upon Tyne
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation for any purpose other than its commercial exploitation
- * is hereby granted without fee, provided that the above copyright
- * notice appear in all copies and that both that copyright notice and
- * this permission notice appear in supporting documentation, and that
- * the name of The University of Newcastle upon Tyne not be used in
- * advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. The University of
- * Newcastle upon Tyne makes no representations about the suitability of
- * this software for any purpose. It is provided "as is" without express
- * or implied warranty.
- *
- * THE UNIVERSITY OF NEWCASTLE UPON TYNE DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE UNIVERSITY OF
- * NEWCASTLE UPON TYNE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
- * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
- * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- *
- * Author: Gerry Tomlinson (gerry.tomlinson@newcastle.ac.uk)
- * Computing Science Department, University of Newcastle upon Tyne, UK
- */
-
-/*
- *
- * program afile
- *
- *
- * show creator/type of netatalk file
- *
- * usage afile [-a] file ....
- *
- * looks for MAGIC at start to see if an AppleDouble else assumes it's a
- * data fork and only reports if corresponding .AppleDouble exists unless -a option set
- * in which case report unknown if not a directory (does not look for
- * extension mappings)
- *
- * returns exit status 0 if all files have corresponding readable valid .AppleDouble or data fork
- *
- * if both parts of file don't exist in correct form it returns (for last file):
- *
- * 1 file doesn't exist
- * 2 file is unreadable
- * 3 file is directory
- * 4 file is AppleDouble without data fork
- * 5 file is AppleDouble with unreadable data fork
- * 6 file is data fork without AppleDouble
- * 7 file is data fork with unreadable AppleDouble
- * 8 file is data for with short AppleDouble
- * 9 bad magic in AppleDouble
- * 99 bad command line options
- *
- * by gerry.tomlinson@ncl.ac.uk
- * last update 26/2/98
+ * $Id: afile.c,v 1.7 2009-10-14 01:38:28 didg Exp $
*
- */
+ afile - determine the MacOS creator/type of files
+
+ Copyright (C) 2001 Sebastian Rittau.
+ All rights reserved.
+
+ This file may be distributed and/or modfied under the terms of the
+ following license:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the author nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <strings.h>
+#include <string.h>
+#include <errno.h>
+
#include <sys/types.h>
-#include <netinet/in.h>
#include <sys/stat.h>
-
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif /* HAVE_UNISTD_H */
#include <atalk/adouble.h>
+#include "common.h"
+
+/* Possible return types. These are taken from the original afile for
+ * compatibility.
+ */
+#define RET_OK 0 /* everything went fine */
+#define RET_NO_SUCH_FILE 1 /* file doesn't exist */
+#define RET_UNREADABLE 2 /* file is unreadable */
+#define RET_IS_DIR 3 /* file is a directory */
+#define RET_NO_DF 4 /* there is no corresponding data fork */
+#define RET_INVALID_DF 5 /* data fork exists but can't be read */
+#define RET_NO_AD 6 /* AppleDouble file doesn't exist */
+#define RET_INVALID_AD 7 /* AppleDouble file exists but can't be read */
+#define RET_SHORT_AD 8 /* AppleDouble file is too short */
+#define RET_BAD_MAGIC 9 /* AppleDouble file has a bad magic value */
+#define RET_BAD_ARGS 99 /* bad command line options */
+
+
+/* Global Variables */
+static int showall = 0;
-extern char *optarg;
-extern int optind, opterr;
-#define AD ".AppleDouble"
+/* Print usage information. */
+static void usage(char *prog)
+{
+ fprintf(stderr, "Usage: %s [-a] FILE ...\n", prog);
+}
+
+/* Print extensive help. */
+static void help(char *prog)
+{
+ usage(prog);
+ fprintf(stderr,
+ "\n"
+ "Determine the MacOS creator/type of FILEs.\n"
+ "\n"
+ " -a, --show-all also show unknown files and directories\n"
+ " -h, --help show this help and exit\n"
+ " -v, --version show version information and exit\n");
+}
-main(int argc, char *argv[])
+/* Print the version. */
+static void version(void)
+{
+ fprintf(stderr, "afile (netatalk " VERSION ")\n");
+}
+/* Argument Handling
+ * known options: -a, -h, -v
+ * known long options: --show-all, --help, --version
+ */
+#define OPTSTRING "ahv-:"
+static int parse_args(int argc, char *argv[])
{
- int fdata, fres;
- struct stat statbuf;
- int n,i;
- char adbuf [AD_DATASZ];
- struct adouble *ad;
- int datafork;
- char *dname;
- char *rname;
- mode_t dmode;
- mode_t rmode;
- char *slash;
- char c;
- char *type = 0;
- char *creator = 0;
- char *p;
- int errflag = 0;
- int aflag = 0;
- int status = 0;
- int gotdata;
-
- while ((c = getopt(argc, argv, "a")) != -1)
+ int c;
+
+ /* iterate through the command line */
+ while ((c = getopt(argc, argv, OPTSTRING)) != -1) {
switch (c) {
- case 'a':
- aflag = 1; break;
- case '?' :
- errflag = 1; break;
+ case 'h':
+ help(argv[0]);
+ exit(0);
+ case 'v':
+ version();
+ exit(0);
+ case 'a':
+ showall = 1;
+ break;
+ case '-':
+ if (strcmp(optarg, "help") == 0) {
+ help(argv[0]);
+ exit(0);
+ }
+ if (strcmp(optarg, "version") == 0) {
+ version();
+ exit(0);
+ }
+ if (strcmp(optarg, "show-all") == 0)
+ showall = 1;
+ break;
+ default:
+ usage(argv[0]);
+ return -1;
}
+ }
- if (errflag || argc == optind) {
- fprintf(stderr,"usage: afile [-a] file ...\n");
- exit(99);
- }
+ /* At least one file argument is required. */
+ if (argc == optind) {
+ usage(argv[0]);
+ return -1;
+ }
+
+ return 0;
+}
-
- for (; optind < argc; optind++) {
- close (fdata);
- close (fres);
-
- dname = argv[optind];
- rname = 0;
- datafork = 1; /* assume file is a data fork */
- gotdata = 1; /* assume data fork ok */
-
- if (stat(dname, &statbuf)) {
- fprintf(stderr,"afile: %s does not exist\n",dname);
- status = 1;
- continue;
- }
-
- if ((fdata = open(dname,O_RDONLY,0)) == -1) {
- fprintf(stderr,"afile: cannot open %s\n",dname);
- status = 2;
- continue;
- }
-
- fstat(fdata, &statbuf);
- if (S_ISDIR(statbuf.st_mode)) {
- if (aflag)
- printf("directory %s\n",dname);
- status = 3;
- continue;
- }
-
- if ( read(fdata,adbuf,AD_DATASZ) == AD_DATASZ) {
- ad = (struct adouble*)adbuf;
- if (ad->ad_magic == ntohl(AD_MAGIC)) { /* AppleDouble Header */
- datafork = 0;
- rmode = statbuf.st_mode;
- rname = dname;
- dname = calloc(strlen(rname)+4,1);
- slash = rindex(rname,'/');
- if (!slash) {
- strcpy(dname,"../");
- strcat(dname,rname);
- }
- else {
- strncpy(dname, rname, slash + 1 - rname);
- strcat(dname,"../");
- strcat(dname,slash+1);
- }
- if (stat(dname, &statbuf)) {
- status = 4; /* data fork doesn't exist */
- gotdata = 0;
- } else if ((fdata = open(dname,O_RDONLY,0)) == -1) {
- status = 5; /* can't open data fork for reading */
- gotdata = 0;
- }
- dmode = statbuf.st_mode;
- }
- }
-
- if (datafork) {
- dmode = statbuf.st_mode;
- rname = calloc(strlen(dname)+strlen(AD)+2, 1);
- slash = rindex(dname,'/');
- strncpy(rname,dname,slash ? slash + 1 - dname : 0);
- strcat(rname,AD);
- strcat(rname,"/");
- strcat(rname,slash ? slash+1 : dname);
-
- if (stat(rname, &statbuf)) {
- if (aflag)
- printf("unknown %s\n",dname);
- else
- status = 6;
- continue;
- }
- rmode = statbuf.st_mode;
- if ((fres = open(rname, O_RDONLY,0)) == -1) {
- fprintf(stderr,"afile: cannot read %s\n",rname);
- status = 7;
- continue;
- }
- if (read(fres,adbuf,AD_DATASZ) != AD_DATASZ) {
- fprintf(stderr,"afile: %s too small\n",rname);
- status = 8;
- continue;
- }
-
- ad = (struct adouble*)adbuf;
- }
-
- if (ad->ad_magic != ntohl(AD_MAGIC)) {
- fprintf(stderr,"afile: bad MAGIC in %s\n",rname);
- status = 9;
- continue;
- }
-
- printf("%4.4s %4.4s %s\n",adbuf+ADEDOFF_FINDERI, adbuf+ADEDOFF_FINDERI+4,
- datafork ? dname : rname);
-
- if (!gotdata) {
- if (status == 4)
- fprintf(stderr,"afile: %s does not exist\n",dname);
- if (status == 5)
- fprintf(stderr,"afile: cannot read %s\n",dname);
- } else if (dmode != rmode) {
- fprintf(stderr,"afile: %s mode does not match\n",datafork ? rname : dname);
- status = 0;
- }
+/* Print the creator/type as taken from the supplied character stream, which
+ * must be a AppleDouble file header.
+ */
+static void print_type(const char *filename, const char *creator, const char *type)
+{
+ printf("%4.4s %4.4s %s\n", creator, type, filename);
+}
+
+
+static int handle_ad(struct AFile *rfile)
+{
+ int fd;
+ char *dataname;
+
+ dataname = adname_to_dataname(afile_filename(rfile));
+
+ /* Try to open data file. */
+ fd = open(dataname, O_RDONLY);
+ free(dataname);
+ if (fd == -1) {
+ if (errno == ENOENT)
+ return RET_NO_DF; /* There is no data fork. */
+ else
+ return RET_INVALID_DF; /* The data fork can't be read. */
+ }
+ /* FIXME: stat */
+
+ close(fd);
+
+ return RET_OK;
+}
+
+
+static int handle_datafile(struct AFile *datafile)
+{
+ int ret;
+ char *adname;
+ struct AFile *rfile;
+
+ /* Try to load AppleDouble file. */
+ adname = dataname_to_adname(afile_filename(datafile));
+ rfile = afile_new(adname);
+ if (!rfile) {
+ if (errno == ENOENT) {
+ free(adname);
+ if (showall)
+ printf("unknown %s\n", afile_filename(datafile));
+ return RET_NO_AD;
}
- exit (status);
+ fprintf(stderr, "afile:%s: %s\n", adname, strerror(errno));
+ free(adname);
+ return RET_INVALID_AD;
+ }
+ free(adname);
+
+ /* Check if this is really an AppleDouble file. */
+ if (afile_is_ad(rfile)) {
+ print_type(afile_filename(datafile),
+ afile_creator(rfile), afile_type(rfile));
+ if (afile_mode(datafile) != afile_mode(rfile))
+ fprintf(stderr, "afile:%s: mode does not match", afile_filename(datafile));
+ ret = RET_OK;
+ } else
+ ret = RET_INVALID_AD;
+
+ afile_delete(rfile);
+
+ return ret;
+}
+
+
+/* Parse a file and its resource fork. Output the file's creator/type. */
+static int parse_file(char *filename)
+{
+ int ret;
+ struct AFile *afile;
+
+ afile = afile_new(filename);
+ if (!afile) {
+ fprintf(stderr, "afile:%s: %s\n", filename, strerror(errno));
+ return errno == ENOENT ? RET_NO_SUCH_FILE : RET_UNREADABLE;
+ }
+
+ if (afile_is_dir(afile)) {
+ if (showall)
+ printf("directory %s\n", filename);
+ ret = RET_IS_DIR;
+ } else if (afile_is_ad(afile))
+ ret = handle_ad(afile);
+ else
+ ret = handle_datafile(afile);
+
+ afile_delete(afile);
+
+ return ret;
}
-/* end of program afile */
+
+int main(int argc, char *argv[])
+{
+ int ret = RET_OK;
+
+ /* argument handling */
+ if (parse_args(argc, argv) == -1)
+ return RET_BAD_ARGS;
+
+ /* iterate through all files specified as arguments */
+ while (optind < argc)
+ ret = parse_file(argv[optind++]);
+
+ return ret;
+}
projects / netatalk.git / blobdiff