1 files changed, 77 insertions, 0 deletions
diff --git a/source3/smbd/srvstr.c b/source3/smbd/srvstr.c
new file mode 100644
index 0000000000..bae77d5d4b
--- /dev/null
+++ b/source3/smbd/srvstr.c
@@ -0,0 +1,77 @@
+/* 
+   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"
+extern int max_send;
+
+/* Make sure we can't write a string past the end of the buffer */
+
+size_t srvstr_push_fn(const char *function, unsigned int line,
+		      const char *base_ptr, uint16 smb_flags2, void *dest,
+		      const char *src, int dest_len, int flags)
+{
+	if (dest_len < 0) {
+		return 0;
+	}
+
+	/* 'normal' push into size-specified buffer */
+	return push_string_fn(function, line, base_ptr, smb_flags2, dest, src,
+			      dest_len, flags);
+}
+
+/*******************************************************************
+ Add a string to the end of a smb_buf, adjusting bcc and smb_len.
+ Return the bytes added
+********************************************************************/
+
+ssize_t message_push_string(uint8 **outbuf, const char *str, int flags)
+{
+	size_t buf_size = smb_len(*outbuf) + 4;
+	size_t grow_size;
+	size_t result;
+	uint8 *tmp;
+
+	/*
+	 * We need to over-allocate, now knowing what srvstr_push will
+	 * actually use. This is very generous by incorporating potential
+	 * padding, the terminating 0 and at most 4 chars per UTF-16 code
+	 * point.
+	 */
+	grow_size = (strlen(str) + 2) * 4;
+
+	if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8,
+					 buf_size + grow_size))) {
+		DEBUG(0, ("talloc failed\n"));
+		return -1;
+	}
+
+	result = srvstr_push((char *)tmp, SVAL(tmp, smb_flg2),
+			     tmp + buf_size, str, grow_size, flags);
+
+	if (result == (size_t)-1) {
+		DEBUG(0, ("srvstr_push failed\n"));
+		return -1;
+	}
+	set_message_bcc((char *)tmp, smb_buflen(tmp) + result);
+
+	*outbuf = tmp;
+
+	return result;
+}