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-rw-r--r--librpc/ndr/ndr_basic.c34
1 files changed, 22 insertions, 12 deletions
diff --git a/librpc/ndr/ndr_basic.c b/librpc/ndr/ndr_basic.c
index 7a4e22ad70..1887838779 100644
--- a/librpc/ndr/ndr_basic.c
+++ b/librpc/ndr/ndr_basic.c
@@ -1247,16 +1247,21 @@ _PUBLIC_ void ndr_print_DATA_BLOB(struct ndr_print *ndr, const char *name, DATA_
/*
- push a DATA_BLOB onto the wire.
-*/
+ * Push a DATA_BLOB onto the wire.
+ * 1) When called with LIBNDR_FLAG_ALIGN* alignment flags set, push padding
+ * bytes _only_. The length is determined by the alignment required and the
+ * current ndr offset.
+ * 2) When called with the LIBNDR_FLAG_REMAINING flag, push the byte array to
+ * the ndr buffer.
+ * 3) Otherwise, push a uint32 length _and_ a corresponding byte array to the
+ * ndr buffer.
+ */
_PUBLIC_ enum ndr_err_code ndr_push_DATA_BLOB(struct ndr_push *ndr, int ndr_flags, DATA_BLOB blob)
{
if (ndr->flags & LIBNDR_FLAG_REMAINING) {
/* nothing to do */
- } else if (ndr->flags & LIBNDR_ALIGN_FLAGS) {
- if (ndr->flags & LIBNDR_FLAG_NOALIGN) {
- blob.length = 0;
- } else if (ndr->flags & LIBNDR_FLAG_ALIGN2) {
+ } else if (ndr->flags & (LIBNDR_ALIGN_FLAGS & ~LIBNDR_FLAG_NOALIGN)) {
+ if (ndr->flags & LIBNDR_FLAG_ALIGN2) {
blob.length = NDR_ALIGN(ndr, 2);
} else if (ndr->flags & LIBNDR_FLAG_ALIGN4) {
blob.length = NDR_ALIGN(ndr, 4);
@@ -1273,18 +1278,23 @@ _PUBLIC_ enum ndr_err_code ndr_push_DATA_BLOB(struct ndr_push *ndr, int ndr_flag
}
/*
- pull a DATA_BLOB from the wire.
-*/
+ * Pull a DATA_BLOB from the wire.
+ * 1) when called with LIBNDR_FLAG_ALIGN* alignment flags set, pull padding
+ * bytes _only_. The length is determined by the alignment required and the
+ * current ndr offset.
+ * 2) When called with the LIBNDR_FLAG_REMAINING flag, pull all remaining bytes
+ * from the ndr buffer.
+ * 3) Otherwise, pull a uint32 length _and_ a corresponding byte array from the
+ * ndr buffer.
+ */
_PUBLIC_ enum ndr_err_code ndr_pull_DATA_BLOB(struct ndr_pull *ndr, int ndr_flags, DATA_BLOB *blob)
{
uint32_t length = 0;
if (ndr->flags & LIBNDR_FLAG_REMAINING) {
length = ndr->data_size - ndr->offset;
- } else if (ndr->flags & LIBNDR_ALIGN_FLAGS) {
- if (ndr->flags & LIBNDR_FLAG_NOALIGN) {
- length = 0;
- } else if (ndr->flags & LIBNDR_FLAG_ALIGN2) {
+ } else if (ndr->flags & (LIBNDR_ALIGN_FLAGS & ~LIBNDR_FLAG_NOALIGN)) {
+ if (ndr->flags & LIBNDR_FLAG_ALIGN2) {
length = NDR_ALIGN(ndr, 2);
} else if (ndr->flags & LIBNDR_FLAG_ALIGN4) {
length = NDR_ALIGN(ndr, 4);