ndr: split out ndr enum functions

This allows for easier implementation of the NDR32/NDR64 split

3 files changed, 78 insertions, 4 deletions

diff --git a/librpc/ndr/libndr.h b/librpc/ndr/libndr.h
index 16a1ff65d0..03b4362b37 100644
--- a/librpc/ndr/libndr.h
+++ b/librpc/ndr/libndr.h
@@ -541,4 +541,11 @@ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid);
 char *NS_GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid);
 struct GUID GUID_random(void);
 
+_PUBLIC_ enum ndr_err_code ndr_pull_enum_uint8(struct ndr_pull *ndr, int ndr_flags, uint8_t *v);
+_PUBLIC_ enum ndr_err_code ndr_pull_enum_uint16(struct ndr_pull *ndr, int ndr_flags, uint16_t *v);
+_PUBLIC_ enum ndr_err_code ndr_pull_enum_uint32(struct ndr_pull *ndr, int ndr_flags, uint32_t *v);
+_PUBLIC_ enum ndr_err_code ndr_push_enum_uint8(struct ndr_push *ndr, int ndr_flags, uint8_t v);
+_PUBLIC_ enum ndr_err_code ndr_push_enum_uint16(struct ndr_push *ndr, int ndr_flags, uint16_t v);
+_PUBLIC_ enum ndr_err_code ndr_push_enum_uint32(struct ndr_push *ndr, int ndr_flags, uint32_t v);
+
 #endif /* __LIBNDR_H__ */
diff --git a/librpc/ndr/ndr.c b/librpc/ndr/ndr.c
index d629d852e8..cb47ca1d60 100644
--- a/librpc/ndr/ndr.c
+++ b/librpc/ndr/ndr.c
@@ -459,7 +459,7 @@ _PUBLIC_ enum ndr_err_code ndr_pull_subcontext_start(struct ndr_pull *ndr,
 
 	case 4: {
 		uint32_t content_size;
-		NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &content_size));
+		NDR_CHECK(ndr_pull_uint3264(ndr, NDR_SCALARS, &content_size));
 		if (size_is >= 0 && size_is != content_size) {
 			return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) size_is(%d) mismatch content_size %d", 
 						(int)size_is, (int)content_size);
@@ -544,7 +544,7 @@ _PUBLIC_ enum ndr_err_code ndr_pull_subcontext_start(struct ndr_pull *ndr,
 
 	subndr = talloc_zero(ndr, struct ndr_pull);
 	NDR_ERR_HAVE_NO_MEMORY(subndr);
-	subndr->flags		= ndr->flags;
+	subndr->flags		= ndr->flags & ~LIBNDR_FLAG_NDR64;
 	subndr->current_mem_ctx	= ndr->current_mem_ctx;
 
 	subndr->data = ndr->data + ndr->offset;
@@ -588,7 +588,7 @@ _PUBLIC_ enum ndr_err_code ndr_push_subcontext_start(struct ndr_push *ndr,
 
 	subndr = ndr_push_init_ctx(ndr, ndr->iconv_convenience);
 	NDR_ERR_HAVE_NO_MEMORY(subndr);
-	subndr->flags	= ndr->flags;
+	subndr->flags	= ndr->flags & ~LIBNDR_FLAG_NDR64;
 
 	*_subndr = subndr;
 	return NDR_ERR_SUCCESS;
@@ -623,7 +623,7 @@ _PUBLIC_ enum ndr_err_code ndr_push_subcontext_end(struct ndr_push *ndr,
 		break;
 
 	case 4: 
-		NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, subndr->offset));
+		NDR_CHECK(ndr_push_uint3264(ndr, NDR_SCALARS, subndr->offset));
 		break;
 
 	case 0xFFFFFC01:
diff --git a/librpc/ndr/ndr_basic.c b/librpc/ndr/ndr_basic.c
index efadb1e95e..00e33ad9d0 100644
--- a/librpc/ndr/ndr_basic.c
+++ b/librpc/ndr/ndr_basic.c
@@ -272,6 +272,73 @@ _PUBLIC_ enum ndr_err_code ndr_pull_WERROR(struct ndr_pull *ndr, int ndr_flags,
 	return NDR_ERR_SUCCESS;
 }
 
+
+/*
+  parse a uint8_t enum
+*/
+_PUBLIC_ enum ndr_err_code ndr_pull_enum_uint8(struct ndr_pull *ndr, int ndr_flags, uint8_t *v)
+{
+	return ndr_pull_uint8(ndr, ndr_flags, v);
+}
+
+/*
+  parse a uint16_t enum (uint32_t on NDR64)
+*/
+_PUBLIC_ enum ndr_err_code ndr_pull_enum_uint16(struct ndr_pull *ndr, int ndr_flags, uint16_t *v)
+{
+	if (unlikely(ndr->flags & LIBNDR_FLAG_NDR64)) {
+		uint32_t v32;
+		NDR_CHECK(ndr_pull_uint32(ndr, ndr_flags, &v32));
+		*v = v32;
+		if (v32 != *v) {
+			DEBUG(0,(__location__ ": non-zero upper 16 bits 0x%08x\n", (unsigned)v32));
+			return NDR_ERR_NDR64;
+		}
+		return NDR_ERR_SUCCESS;
+	}
+	NDR_PULL_ALIGN(ndr, 2);
+	NDR_PULL_NEED_BYTES(ndr, 2);
+	*v = NDR_SVAL(ndr, ndr->offset);
+	ndr->offset += 2;
+	return NDR_ERR_SUCCESS;
+}
+
+/*
+  parse a uint32_t enum
+*/
+_PUBLIC_ enum ndr_err_code ndr_pull_enum_uint32(struct ndr_pull *ndr, int ndr_flags, uint32_t *v)
+{
+	return ndr_pull_uint32(ndr, ndr_flags, v);
+}
+
+/*
+  push a uint8_t enum
+*/
+_PUBLIC_ enum ndr_err_code ndr_push_enum_uint8(struct ndr_push *ndr, int ndr_flags, uint8_t v)
+{
+	return ndr_push_uint8(ndr, ndr_flags, v);
+}
+
+/*
+  push a uint16_t enum (uint32_t on NDR64)
+*/
+_PUBLIC_ enum ndr_err_code ndr_push_enum_uint16(struct ndr_push *ndr, int ndr_flags, uint16_t v)
+{
+	if (unlikely(ndr->flags & LIBNDR_FLAG_NDR64)) {
+		return ndr_push_uint32(ndr, ndr_flags, v);
+	}
+	return ndr_push_uint16(ndr, ndr_flags, v);
+}
+
+/*
+  push a uint32_t enum
+*/
+_PUBLIC_ enum ndr_err_code ndr_push_enum_uint32(struct ndr_push *ndr, int ndr_flags, uint32_t v)
+{
+	return ndr_push_uint32(ndr, ndr_flags, v);
+}
+
+
 /*
   push a WERROR
 */