librpc: add dcerpc_get_auth_length() helper function

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

diff --git a/librpc/rpc/dcerpc_util.c b/librpc/rpc/dcerpc_util.c
index 0808131dd145a648d9103193759b361b71a4b0f4..6cd3e38a75a0dd1fb08488db0c055bcd345cb2db 100644 (file)
--- a/librpc/rpc/dcerpc_util.c
+++ b/librpc/rpc/dcerpc_util.c
@@ -59,6 +59,15 @@ void dcerpc_set_auth_length(DATA_BLOB *blob, uint16_t v)
        }
 }
 
+uint16_t dcerpc_get_auth_length(const DATA_BLOB *blob)
+{
+       if (CVAL(blob->data,DCERPC_DREP_OFFSET) & DCERPC_DREP_LE) {
+               return SVAL(blob->data, DCERPC_AUTH_LEN_OFFSET);
+       } else {
+               return RSVAL(blob->data, DCERPC_AUTH_LEN_OFFSET);
+       }
+}
+
 uint8_t dcerpc_get_endian_flag(DATA_BLOB *blob)
 {
        return blob->data[DCERPC_DREP_OFFSET];

diff --git a/librpc/rpc/rpc_common.h b/librpc/rpc/rpc_common.h
index cdc9fe8ac88262feaeec5d096ab7658b79418027..d5b5d590bff36dcf9a4ea419c8f8a2828b131c30 100644 (file)
--- a/librpc/rpc/rpc_common.h
+++ b/librpc/rpc/rpc_common.h
@@ -168,6 +168,7 @@ enum dcerpc_transport_t dcerpc_transport_by_tower(const struct epm_tower *tower)
 void dcerpc_set_frag_length(DATA_BLOB *blob, uint16_t v);
 uint16_t dcerpc_get_frag_length(const DATA_BLOB *blob);
 void dcerpc_set_auth_length(DATA_BLOB *blob, uint16_t v);
+uint16_t dcerpc_get_auth_length(const DATA_BLOB *blob);
 uint8_t dcerpc_get_endian_flag(DATA_BLOB *blob);
 const char *dcerpc_default_transport_endpoint(TALLOC_CTX *mem_ctx,
                                              enum dcerpc_transport_t transport,