/*
- * $Id: unix.c,v 1.35 2002-06-06 10:14:26 didg Exp $
+ * $Id: unix.c,v 1.41 2003-01-08 15:01:36 didg Exp $
*
* Copyright (c) 1990,1993 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
#include <netatalk/endian.h>
#include <dirent.h>
#include <limits.h>
+#include <atalk/adouble.h>
#include <atalk/afp.h>
/* STDC check */
struct stat *stat;
struct maccess *ma;
{
- mode_t mode;
+mode_t mode;
mode = stat->st_mode;
-
ma->ma_world = utombits( mode );
mode = mode >> 3;
ma->ma_owner = utombits( mode );
- /* ma_user is a union of all permissions */
-
+ /* ma_user is a union of all permissions but we must follow
+ * unix perm
+ */
if ( (uuid == stat->st_uid) || (uuid == 0)) {
ma->ma_user = ma->ma_owner | AR_UOWN;
}
- if ( gmem( stat->st_gid )) {
- ma->ma_user |= ma->ma_group;
- }
- ma->ma_user |= ma->ma_world;
+ else if ( gmem( stat->st_gid )) {
+ ma->ma_user = ma->ma_group;
+ }
+ else {
+ ma->ma_user = ma->ma_world;
+ }
/*
* There are certain things the mac won't try if you don't have
*
* Note: the previous method, using access(), does not work correctly
* over NFS.
+ * FIXME what about ACL?
*/
-void accessmode( path, ma, dir )
+void accessmode( path, ma, dir, st )
char *path;
struct maccess *ma;
-struct dir *dir;
+struct dir *dir;
+struct stat *st;
+
{
- struct stat sb;
- ma->ma_user = ma->ma_owner = 0;
- if ( stat( path, &sb ) == 0 )
- utommode( &sb, ma );
+struct stat sb;
+
+ ma->ma_user = ma->ma_owner = ma->ma_world = ma->ma_group = 0;
+ if (!st) {
+ if (stat(path, &sb) != 0)
+ return;
+ st = &sb;
+ }
+ utommode( st, ma );
return;
}
return( mode );
}
-int stickydirmode(name, mode, dropbox)
+/*
+ a dropbox is a folder where w is set but not r eg:
+ rwx-wx-wx or rwx-wx--
+ rwx----wx (is not asked by a Mac with OS >= 8.0 ?)
+*/
+static int stickydirmode(name, mode, dropbox)
char * name;
const mode_t mode;
const int dropbox;
{
- int retval;
-#ifdef DROPKLUDGE
- int uid;
-#endif /* DROPKLUDGE */
+ int retval = 0;
- /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
- retval=0;
#ifdef DROPKLUDGE
+ /* Turn on the sticky bit if this is a drop box, also turn off the setgid bit */
if (dropbox) {
- if (mode & S_IWOTH) {
- if (mode & S_IROTH);
- else { /* if S_IWOTH and not S_IROTH */
- uid=geteuid();
- if ( seteuid(0) < 0) {
- LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
- }
- if ( retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) ) < 0) {
- LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
- return(AFPERR_ACCESS);
- } else {
+ int uid;
+
+ if ( ( (mode & S_IWOTH) && !(mode & S_IROTH)) ||
+ ( (mode & S_IWGRP) && !(mode & S_IRGRP)) )
+ {
+ uid=geteuid();
+ if ( seteuid(0) < 0) {
+ LOG(log_error, logtype_afpd, "stickydirmode: unable to seteuid root: %s", strerror(errno));
+ }
+ if ( (retval=chmod( name, ( (DIRBITS | mode | S_ISVTX) & ~default_options.umask) )) < 0) {
+ LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s", name, strerror(errno) );
+ } else {
#ifdef DEBUG
- LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
+ LOG(log_info, logtype_afpd, "stickydirmode: (debug) chmod \"%s\": %s", name, strerror(retval) );
#endif /* DEBUG */
- seteuid(uid);
- } /* end getting retval */
- } /* end if not & S_IROTH */
- } else { /* end if S_IWOTH and not S_IROTH */
-#endif /* DROPKLUDGE */
-
- /*
- * Ignore EPERM errors: We may be dealing with a directory that is
- * group writable, in which case chmod will fail.
- */
- if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
- LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",
- name, strerror(errno) );
- retval = -1;
}
-#ifdef DROPKLUDGE
- } /* end if not mode */
- } /* end checking for "dropbox" */
+ seteuid(uid);
+ return retval;
+ }
+ }
#endif /* DROPKLUDGE */
+
+ /*
+ * Ignore EPERM errors: We may be dealing with a directory that is
+ * group writable, in which case chmod will fail.
+ */
+ if ( (chmod( name, (DIRBITS | mode) & ~default_options.umask ) < 0) && errno != EPERM) {
+ LOG(log_error, logtype_afpd, "stickydirmode: chmod \"%s\": %s",name, strerror(errno) );
+ retval = -1;
+ }
+
return retval;
}
return( 0 );
}
+int setfilmode(name, mode, st)
+char * name;
+mode_t mode;
+struct stat *st;
+{
+struct stat sb;
+mode_t mask = S_IRUSR |S_IWUSR | S_IRGRP | S_IWGRP |S_IROTH | S_IWOTH;
+
+ if (!st) {
+ if (stat(name, &sb) != 0)
+ return -1;
+ st = &sb;
+ }
+ mode &= mask; /* keep only rw-rw-rw in mode */
+ mode |= st->st_mode & ~mask; /* keep other bits from previous mode */
+ if ( chmod( name, mode & ~default_options.umask ) < 0 && errno != EPERM ) {
+ return -1;
+ }
+ return 0;
+}
+
int setdirmode( mode, noadouble, dropbox )
const mode_t mode;
const int noadouble;
char *m;
struct dirent *dirp;
DIR *dir;
-
+
if (( dir = opendir( "." )) == NULL ) {
LOG(log_error, logtype_afpd, "setdirmode: opendir .: %s", strerror(errno) );
return( -1 );
continue;
}
- if (S_ISREG(st.st_mode)) {
+ if (!S_ISDIR(st.st_mode)) {
+ if (setfilmode(dirp->d_name, mode, &st) < 0) {
+ LOG(log_error, logtype_afpd, "setdirmode: chmod %s: %s",
+ dirp->d_name, strerror(errno) );
+ return -1;
+ }
+ }
+#if 0
/* XXX: need to preserve special modes */
- if (S_ISDIR(st.st_mode)) {
+ else if (S_ISDIR(st.st_mode)) {
if (stickydirmode(dirp->d_name, DIRBITS | mode, dropbox) < 0)
return (-1);
} else if (stickydirmode(dirp->d_name, mode, dropbox) < 0)
return (-1);
}
+#endif
}
closedir( dir );
+
+ /* change perm of .AppleDouble's files
+ */
if (( dir = opendir( ".AppleDouble" )) == NULL ) {
if (noadouble)
goto setdirmode_noadouble;
LOG(log_error, logtype_afpd, "setdirmode: stat %s: %s", buf, strerror(errno) );
continue;
}
-
- if (S_ISDIR(st.st_mode)) {
- stickydirmode( buf, DIRBITS | mode, dropbox );
- } else
- stickydirmode( buf, mode, dropbox );
+ if (!S_ISDIR(st.st_mode)) {
+ if (setfilmode(buf, ad_hf_mode(mode), &st) < 0) {
+ /* FIXME what do we do then? */
+ }
+ }
} /* end for */
closedir( dir );
return( 0 );
}
+
+/* recursive chown()ing of a directory */
+static int recursive_chown(const char *path, uid_t uid, gid_t gid) {
+ struct stat sbuf;
+ DIR *odir = NULL;
+ struct dirent *entry;
+ char *name;
+ int ret = 0;
+ char newpath[PATH_MAX+1];
+ newpath[PATH_MAX] = '\0';
+
+ if (chown(path, uid, gid) < 0) {
+ LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s\n", path, uid, strerror(errno));
+ return -1;
+ }
+
+ if (stat(path, &sbuf) < 0) {
+ LOG(log_error, logtype_afpd, "cannot chown() file [%s] (uid = %d): %s\n", path, uid, strerror(errno));
+ return -1;
+ }
+
+ if (S_ISDIR(sbuf.st_mode)) {
+ odir = opendir(path);
+ if (odir == NULL) {
+ LOG(log_error, logtype_afpd, "cannot opendir() [%s] (uid = %d): %s\n", path, uid, strerror(errno));
+ goto recursive_chown_end;
+ }
+ while ((entry=readdir(odir)) != NULL) {
+ name = entry->d_name;
+ if (name[0] == '.' && name[1] == '\0')
+ continue;
+ if (name[0] == '.' && name[1] == '.' && name[2] == '\0')
+ continue;
+ sprintf(newpath, "%s/%s", path, name);
+ if (recursive_chown(newpath, uid, gid) < 0)
+ ret = -1;
+ } /* while */
+ } /* if */
+
+recursive_chown_end:
+ if (odir != NULL) {
+ closedir(odir);
+ }
+ return ret;
+}
+
+/* This is equivalent of unix rename(). */
+int unix_rename(const char *oldpath, const char *newpath)
+{
+ char pd_name[PATH_MAX+1];
+ int i;
+ struct stat pd_stat;
+ uid_t uid;
+
+ if (rename(oldpath, newpath) < 0)
+ return -1;
+
+ for (i = 0; i <= PATH_MAX && newpath[i] != '\0'; i++)
+ pd_name[i] = newpath[i];
+ pd_name[i] = '\0';
+
+ while (i > 0 && pd_name[i] != '/') i--;
+ if (pd_name[i] == '/') i++;
+
+ pd_name[i++] = '.'; pd_name[i++] = '\0';
+
+ if (stat(pd_name, &pd_stat) < 0) {
+ LOG(log_error, logtype_afpd, "stat() of parent dir failed: pd_name = %s, uid = %d: %s\n",
+ pd_name, geteuid(), strerror(errno));
+ return 0;
+ }
+
+ /* So we have SGID bit set... */
+ if ((S_ISGID & pd_stat.st_mode) != 0) {
+ uid = geteuid();
+ if (seteuid(0) < 0)
+ LOG(log_error, logtype_afpd, "seteuid() failed: %s\n", strerror(errno));
+ if (recursive_chown(newpath, uid, pd_stat.st_gid) < 0)
+ LOG(log_error, logtype_afpd, "chown() of parent dir failed: newpath=%s, uid=%d: %s\n",
+ pd_name, geteuid(), strerror(errno));
+ seteuid(uid);
+ }
+
+ return 0;
+}
+
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