C++ (Cpp) ndr_pull_ncacn_packet Beispiele

Beispiel #1

Datei: dcerpc_helpers.c Projekt: Alexandr-Galko/samba

/**
* @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
* @param bigendian	Whether the packet is bignedian encoded
*
* @return a NTSTATUS error code
*/
NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx,
				  const DATA_BLOB *blob,
				  struct ncacn_packet *r,
				  bool bigendian)
{
	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 (bigendian) {
		ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
	}

	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 (DEBUGLEVEL >= 10) {
		NDR_PRINT_DEBUG(ncacn_packet, r);
	}

	return NT_STATUS_OK;
}

Beispiel #2

/* 
   parse a data blob into a ncacn_packet structure. This handles both
   input and output packets
*/
static NTSTATUS ncacn_pull(struct dcerpc_connection *c, DATA_BLOB *blob, TALLOC_CTX *mem_ctx, 
			    struct ncacn_packet *pkt)
{
	struct ndr_pull *ndr;
	enum ndr_err_code ndr_err;

	ndr = ndr_pull_init_flags(c, blob, mem_ctx);
	if (!ndr) {
		return NT_STATUS_NO_MEMORY;
	}

	if (! (CVAL(blob->data, DCERPC_DREP_OFFSET) & DCERPC_DREP_LE)) {
		ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
	}

	ndr_err = ndr_pull_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
		return ndr_map_error2ntstatus(ndr_err);
	}

	return NT_STATUS_OK;
}

Beispiel #3

Datei: dcerpc_helpers.c Projekt: 285858315/samba

/**
* @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
* @param bigendian	Whether the packet is bignedian encoded
*
* @return a NTSTATUS error code
*/
NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx,
				  const DATA_BLOB *blob,
				  struct ncacn_packet *r,
				  bool bigendian)
{
	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 (bigendian) {
		ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
	}

	if (CVAL(blob->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 (DEBUGLEVEL >= 10) {
		NDR_PRINT_DEBUG(ncacn_packet, r);
	}

	if (r->frag_length != blob->length) {
		return NT_STATUS_RPC_PROTOCOL_ERROR;
	}

	return NT_STATUS_OK;
}