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/*
* Copyright (C) 2003-2008 by CERN/IT/ADC/CA
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: nsgetacl.c,v $ $Revision: 1.5 $ $Date: 2008/09/24 11:25:01 $ CERN IT-ADC/CA Jean-Philippe Baud";
#endif /* not lint */
/* nsgetacl - get the Access Control List for a file/directory */
#include <errno.h>
#include <sys/types.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#if defined(_WIN32)
#include <winsock2.h>
#include "statbits.h"
#endif
#include "Cns.h"
#include "Cns_api.h"
#include "serrno.h"
static char *decode_group(gid_t);
static char *decode_perm(unsigned char);
static char *decode_user(uid_t);
extern char *getenv();
extern int optind;
int aflag;
int dflag;
main(argc, argv)
int argc;
char **argv;
{
struct Cns_acl acl[CA_MAXACLENTRIES];
struct Cns_acl *aclp;
int c;
int errflg = 0;
char fullpath[CA_MAXPATHLEN+1];
int i;
int j;
unsigned char mask = 0xFF;
int nentries;
char *p;
char *path;
#if defined(_WIN32)
WSADATA wsadata;
#endif
while ((c = getopt (argc, argv, "ad")) != EOF) {
switch (c) {
case 'a':
aflag++;
break;
case 'd':
dflag++;
break;
case '?':
errflg++;
break;
default:
break;
}
}
if (errflg || optind >= argc) {
fprintf (stderr,
"usage: %s [-a] [-d] file...\n", argv[0]);
exit (USERR);
}
#if defined(_WIN32)
if (WSAStartup (MAKEWORD (2, 0), &wsadata)) {
fprintf (stderr, NS052);
exit (SYERR);
}
#endif
for (i = optind; i < argc; i++) {
path = argv[i];
if (*path != '/' && strstr (path, ":/") == NULL) {
if ((p = getenv (CNS_HOME_ENV)) == NULL ||
strlen (p) + strlen (path) + 1 > CA_MAXPATHLEN) {
fprintf (stderr, "%s: invalid path\n", path);
errflg++;
continue;
} else
sprintf (fullpath, "%s/%s", p, path);
} else {
if (strlen (path) > CA_MAXPATHLEN) {
fprintf (stderr, "%s: %s\n", path,
sstrerror(SENAMETOOLONG));
errflg++;
continue;
} else
strcpy (fullpath, path);
}
if ((nentries = Cns_getacl (fullpath, CA_MAXACLENTRIES, acl)) < 0) {
fprintf (stderr, "%s: %s\n", path, sstrerror(serrno));
errflg++;
continue;
}
/* Print header */
printf ("# file: %s\n", path);
for (j = 0, aclp = acl; j < nentries; j++, aclp++) {
if (aclp->a_type == CNS_ACL_USER_OBJ)
printf ("# owner: %s\n", decode_user (aclp->a_id));
else if (aclp->a_type == CNS_ACL_GROUP_OBJ)
printf ("# group: %s\n", decode_group (aclp->a_id));
else if (aclp->a_type == CNS_ACL_MASK) {
mask = aclp->a_perm;
break;
}
}
for (j = 0, aclp = acl; j < nentries; j++, aclp++) {
switch (aclp->a_type) {
case CNS_ACL_USER_OBJ:
if (! dflag)
printf ("user::%s\n",
decode_perm (aclp->a_perm));
break;
case CNS_ACL_USER:
if (! dflag) {
printf ("user:%s:%s\t\t",
decode_user(aclp->a_id),
decode_perm (aclp->a_perm));
printf ("#effective:%s\n",
decode_perm (aclp->a_perm & mask));
}
break;
case CNS_ACL_GROUP_OBJ:
if (! dflag) {
printf ("group::%s\t\t",
decode_perm (aclp->a_perm));
printf ("#effective:%s\n",
decode_perm (aclp->a_perm & mask));
}
break;
case CNS_ACL_GROUP:
if (! dflag) {
printf ("group:%s:%s\t\t",
decode_group (aclp->a_id),
decode_perm (aclp->a_perm));
printf ("#effective:%s\n",
decode_perm (aclp->a_perm & mask));
}
break;
case CNS_ACL_MASK:
if (! dflag)
printf ("mask::%s\n",
decode_perm (aclp->a_perm));
break;
case CNS_ACL_OTHER:
if (! dflag)
printf ("other::%s\n",
decode_perm (aclp->a_perm));
break;
case CNS_ACL_USER_OBJ | CNS_ACL_DEFAULT:
if (! aflag)
printf ("default:user::%s\n",
decode_perm (aclp->a_perm));
break;
case CNS_ACL_USER | CNS_ACL_DEFAULT:
if (! aflag)
printf ("default:user:%s:%s\n",
decode_user (aclp->a_id),
decode_perm (aclp->a_perm));
break;
case CNS_ACL_GROUP_OBJ | CNS_ACL_DEFAULT:
if (! aflag)
printf ("default:group::%s\n",
decode_perm (aclp->a_perm));
break;
case CNS_ACL_GROUP | CNS_ACL_DEFAULT:
if (! aflag)
printf ("default:group:%s:%s\n",
decode_group (aclp->a_id),
decode_perm (aclp->a_perm));
break;
case CNS_ACL_MASK | CNS_ACL_DEFAULT:
if (! aflag)
printf ("default:mask::%s\n",
decode_perm (aclp->a_perm));
break;
case CNS_ACL_OTHER | CNS_ACL_DEFAULT:
if (! aflag)
printf ("default:other::%s\n",
decode_perm (aclp->a_perm));
break;
}
}
if (i < argc - 1)
printf ("\n");
}
#if defined(_WIN32)
WSACleanup();
#endif
if (errflg)
exit (USERR);
exit (0);
}
static char *
decode_group(gid_t gid)
{
struct group *gr;
static gid_t sav_gid = -1;
static char sav_gidstr[256];
if (gid != sav_gid) {
#ifdef VIRTUAL_ID
if (gid == 0)
return ("root");
sav_gid = gid;
if (Cns_getgrpbygid (sav_gid, sav_gidstr) < 0)
#else
sav_gid = gid;
if (gr = getgrgid (sav_gid)) {
strncpy (sav_gidstr, gr->gr_name, sizeof(sav_gidstr) - 1);
sav_gidstr[sizeof(sav_gidstr) - 1] = '\0';
} else
#endif
sprintf (sav_gidstr, "%d", sav_gid);
}
return (sav_gidstr);
}
static char *
decode_perm(unsigned char perm)
{
static char modestr[4] = "---";
modestr[0] = (perm & S_IROTH) ? 'r' : '-';
modestr[1] = (perm & S_IWOTH) ? 'w' : '-';
modestr[2] = (perm & S_IXOTH) ? 'x' : '-';
return (modestr);
}
static char *
decode_user(uid_t uid)
{
struct passwd *pw;
static uid_t sav_uid = -1;
static char sav_uidstr[256];
if (uid != sav_uid) {
#ifdef VIRTUAL_ID
if (uid == 0)
return ("root");
sav_uid = uid;
if (Cns_getusrbyuid (sav_uid, sav_uidstr) < 0)
#else
sav_uid = uid;
if (pw = getpwuid (sav_uid))
strcpy (sav_uidstr, pw->pw_name);
else
#endif
sprintf (sav_uidstr, "%d", sav_uid);
}
return (sav_uidstr);
}
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