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-rw-r--r--source3/smbd/srvstr.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/source3/smbd/srvstr.c b/source3/smbd/srvstr.c
index 4462a423c8..1daa25553f 100644
--- a/source3/smbd/srvstr.c
+++ b/source3/smbd/srvstr.c
@@ -41,3 +41,43 @@ size_t srvstr_push_fn(const char *function, unsigned int line,
/* 'normal' push into size-specified buffer */
return push_string_fn(function, line, base_ptr, 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, tmp + buf_size, str, grow_size,
+ flags);
+
+ if (result == (size_t)-1) {
+ DEBUG(0, ("srvstr_push failed\n"));
+ return -1;
+ }
+ set_message_bcc(NULL, (char *)tmp, smb_buflen(tmp) + result);
+
+ *outbuf = tmp;
+
+ return result;
+}