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/*
* Copyright (c) 2009 Frank Lahm <franklahm@gmail.com>
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* 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.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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 <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <string.h>
#include <libgen.h>
#include <atalk/util.h>
#include <atalk/cnid.h>
#include <atalk/bstrlib.h>
#include <atalk/bstradd.h>
#include <atalk/logger.h>
#include <atalk/errchk.h>
#include <atalk/unicode.h>
/*!
* Build path relativ to volume root
*
* path might be:
* (a) relative:
* "dir/subdir" with cwd: "/afp_volume/topdir"
* (b) absolute:
* "/afp_volume/dir/subdir"
*
* @param path (r) path relative to cwd() or absolute
* @param volpath (r) volume path that path is a subdir of (has been computed in volinfo funcs)
*
* @returns relative path in new bstring, caller must bdestroy it
*/
bstring rel_path_in_vol(const char *path, const char *volpath)
{
EC_INIT;
int cwd = -1;
bstring fpath = NULL;
char *dname = NULL;
struct stat st;
if (path == NULL || volpath == NULL)
return NULL;
EC_NEG1_LOG(cwd = open(".", O_RDONLY));
EC_ZERO( lstat(path, &st) );
if (path[0] == '/') {
EC_NULL(fpath = bfromcstr(path));
} else {
switch (S_IFMT & st.st_mode) {
case S_IFREG:
case S_IFLNK:
EC_NULL_LOG(dname = strdup(path));
EC_ZERO_LOGSTR(chdir(dirname(dname)), "chdir(%s): %s", dirname, strerror(errno));
free(dname);
dname = NULL;
EC_NULL(fpath = bfromcstr(getcwdpath()));
BSTRING_STRIP_SLASH(fpath);
EC_ZERO(bcatcstr(fpath, "/"));
EC_NULL_LOG(dname = strdup(path));
EC_ZERO(bcatcstr(fpath, basename(dname)));
break;
case S_IFDIR:
EC_ZERO_LOGSTR(chdir(path), "chdir(%s): %s", path, strerror(errno));
EC_NULL(fpath = bfromcstr(getcwdpath()));
break;
default:
EC_FAIL;
}
}
BSTRING_STRIP_SLASH(fpath);
/*
* Now we have e.g.:
* fpath: /Volume/netatalk/dir/bla
* volpath: /Volume/netatalk/
* we want: "dir/bla"
*/
int len = strlen(volpath);
if (volpath[len-1] != '/')
/* in case volpath has no trailing slash */
len ++;
EC_ZERO(bdelete(fpath, 0, len));
EC_CLEANUP:
if (dname) free(dname);
if (cwd != -1) {
fchdir(cwd);
close(cwd);
}
if (ret != 0)
return NULL;
return fpath;
}
/*!
* Resolves CNID of a given path
*
* path might be:
* (a) relative:
* "dir/subdir" with cwd: "/afp_volume/topdir"
* (b) absolute:
* "/afp_volume/dir/subdir"
*
* path MUST be pointing inside vol, this is usually the case as vol has been build from
* path using loadvolinfo and friends.
*
* @param cdb (r) CNID db handle
* @param volpath (r) UNIX path of volume
* @param path (r) path, see above
* @param did (w) parent CNID of returned CNID
*
* @returns CNID of path
*/
cnid_t cnid_for_path(struct _cnid_db *cdb,
const char *volpath,
const char *path,
cnid_t *did)
{
EC_INIT;
cnid_t cnid;
bstring rpath = NULL;
bstring statpath = NULL;
struct bstrList *l = NULL;
struct stat st;
cnid = htonl(2);
EC_NULL(rpath = rel_path_in_vol(path, volpath));
EC_NULL(statpath = bfromcstr(volpath));
EC_ZERO(bcatcstr(statpath, "/"));
l = bsplit(rpath, '/');
for (int i = 0; i < l->qty ; i++) {
*did = cnid;
EC_ZERO( bconcat(statpath, l->entry[i]) );
EC_ZERO( lstat(cfrombstr(statpath), &st) );
if ((cnid = cnid_add(cdb,
&st,
*did,
cfrombstr(l->entry[i]),
blength(l->entry[i]),
0)) == CNID_INVALID) {
EC_FAIL;
}
EC_ZERO(bcatcstr(statpath, "/"));
}
EC_CLEANUP:
bdestroy(rpath);
bstrListDestroy(l);
bdestroy(statpath);
if (ret != 0)
return CNID_INVALID;
return cnid;
}
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