diff options
| author | Stefan Metzmacher <metze@samba.org> | 2015-10-28 12:23:00 +0100 |
|---|---|---|
| committer | Andreas Schneider <asn@cryptomilk.org> | 2016-10-26 11:20:13 +0200 |
| commit | fc65e48cbef3a6fe2171fda069f77e7d561b6c3f (patch) | |
| tree | fa84dedfe34e7ba914b43c7cd32defe606dad98e /librpc/rpc | |
| parent | ab7868a9646f295c0edf534b84b47a5e7dc9f7d9 (diff) | |
| download | samba-fc65e48cbef3a6fe2171fda069f77e7d561b6c3f.tar.gz | |
librpc/rpc: move dcerpc_pull_ncacn_packet() from source3/librpc/rpc/ to the toplevel
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Diffstat (limited to 'librpc/rpc')
| -rw-r--r-- | librpc/rpc/dcerpc_util.c | 44 | ||||
| -rw-r--r-- | librpc/rpc/rpc_common.h | 4 |
2 files changed, 48 insertions, 0 deletions
diff --git a/librpc/rpc/dcerpc_util.c b/librpc/rpc/dcerpc_util.c index df149481559..e978b7ef17d 100644 --- a/librpc/rpc/dcerpc_util.c +++ b/librpc/rpc/dcerpc_util.c @@ -63,6 +63,50 @@ uint8_t dcerpc_get_endian_flag(DATA_BLOB *blob) return blob->data[DCERPC_DREP_OFFSET]; } +/** +* @brief Decodes a ncacn_packet +* +* @param mem_ctx The memory context on which to allocate the packet +* elements +* @param blob The blob of data to decode +* @param r An empty ncacn_packet, must not be NULL +* +* @return a NTSTATUS error code +*/ +NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx, + const DATA_BLOB *blob, + struct ncacn_packet *r) +{ + enum ndr_err_code ndr_err; + struct ndr_pull *ndr; + + ndr = ndr_pull_init_blob(blob, mem_ctx); + if (!ndr) { + return NT_STATUS_NO_MEMORY; + } + + if (!(CVAL(ndr->data, DCERPC_DREP_OFFSET) & DCERPC_DREP_LE)) { + ndr->flags |= LIBNDR_FLAG_BIGENDIAN; + } + + if (CVAL(ndr->data, DCERPC_PFC_OFFSET) & DCERPC_PFC_FLAG_OBJECT_UUID) { + ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT; + } + + ndr_err = ndr_pull_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, r); + + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + talloc_free(ndr); + return ndr_map_error2ntstatus(ndr_err); + } + talloc_free(ndr); + + if (r->frag_length != blob->length) { + return NT_STATUS_RPC_PROTOCOL_ERROR; + } + + return NT_STATUS_OK; +} /** * @brief Pull a dcerpc_auth structure, taking account of any auth diff --git a/librpc/rpc/rpc_common.h b/librpc/rpc/rpc_common.h index bd0985ad6a9..1b10b7ea735 100644 --- a/librpc/rpc/rpc_common.h +++ b/librpc/rpc/rpc_common.h @@ -168,6 +168,10 @@ const char *dcerpc_default_transport_endpoint(TALLOC_CTX *mem_ctx, enum dcerpc_transport_t transport, const struct ndr_interface_table *table); +NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx, + const DATA_BLOB *blob, + struct ncacn_packet *r); + /** * @brief Pull a dcerpc_auth structure, taking account of any auth * padding in the blob. For request/response packets we pass |