1 files changed, 78 insertions, 0 deletions
diff --git a/source3/smbd/srvstr.c b/source3/smbd/srvstr.c
new file mode 100644
index 0000000..5298ea7
--- /dev/null
+++ b/source3/smbd/srvstr.c
@@ -0,0 +1,78 @@
+/* 
+   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;
+}