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/*
Unix SMB/CIFS implementation.
server specific string routines
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "lib/util/string_wrappers.h"
/* Make sure we can't write a string past the end of the buffer */
NTSTATUS srvstr_push_fn(const char *base_ptr, uint16_t smb_flags2, void *dest,
const char *src, int dest_len, int flags, size_t *ret_len)
{
size_t len;
int saved_errno;
NTSTATUS status;
if (dest_len < 0) {
return NT_STATUS_INVALID_PARAMETER;
}
saved_errno = errno;
errno = 0;
/* 'normal' push into size-specified buffer */
len = push_string_base(base_ptr, smb_flags2, dest, src,
dest_len, flags);
if (errno != 0) {
/*
* Special case E2BIG, EILSEQ, EINVAL
* as they mean conversion errors here,
* but we don't generically map them as
* they can mean different things in
* generic filesystem calls (such as
* read xattrs).
*/
if (errno == E2BIG || errno == EILSEQ || errno == EINVAL) {
status = NT_STATUS_ILLEGAL_CHARACTER;
} else {
status = map_nt_error_from_unix_common(errno);
/*
* Paranoia - Filter out STATUS_MORE_ENTRIES.
* I don't think we can get this but it has a
* specific meaning to the client.
*/
if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
status = NT_STATUS_UNSUCCESSFUL;
}
}
DEBUG(10,("character conversion failure "
"on string (%s) (%s)\n",
src, strerror(errno)));
} else {
/* Success - restore untouched errno. */
errno = saved_errno;
*ret_len = len;
status = NT_STATUS_OK;
}
return status;
}
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