*/
#include "includes.h"
+#include "dlinklist.h"
#define NDR_BASE_MARSHALL_SIZE 1024
+/*
+ work out the number of bytes needed to align on a n byte boundary
+*/
+size_t ndr_align_size(uint32_t offset, size_t n)
+{
+ if ((offset & (n-1)) == 0) return 0;
+ return n - (offset & (n-1));
+}
+
/*
initialise a ndr parse structure from a data blob
*/
-struct ndr_pull *ndr_pull_init_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx)
+struct ndr_pull *ndr_pull_init_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx)
{
struct ndr_pull *ndr;
- ndr = talloc(mem_ctx, sizeof(*ndr));
+ ndr = talloc_zero(mem_ctx, struct ndr_pull);
if (!ndr) return NULL;
- ndr->flags = 0;
ndr->data = blob->data;
ndr->data_size = blob->length;
- ndr->offset = 0;
- ndr->mem_ctx = mem_ctx;
return ndr;
}
-
-/* limit the remaining size of the current ndr parse structure to the
- given size, starting at the given offset
-
- this is used when a ndr packet has an explicit size on the wire, and we
- need to make sure that we don't use more data than is indicated
-
- the 'ofs' parameter indicates how many bytes back from the current
- offset in the buffer the 'size' number of bytes starts
+/*
+ create an ndr sub-context based on an existing context. The new context starts
+ at the current offset, with the given size limit
*/
-NTSTATUS ndr_pull_limit_size(struct ndr_pull *ndr, uint32 size, uint32 ofs)
+NTSTATUS ndr_pull_subcontext(struct ndr_pull *ndr, struct ndr_pull *ndr2, uint32_t size)
{
- uint32 new_size;
- new_size = ndr->offset + size - ofs;
-
- if (new_size > ndr->data_size) {
- return NT_STATUS_BUFFER_TOO_SMALL;
- }
- ndr->data_size = new_size;
-
+ NDR_PULL_NEED_BYTES(ndr, size);
+ *ndr2 = *ndr;
+ ndr2->data += ndr2->offset;
+ ndr2->offset = 0;
+ ndr2->data_size = size;
+ ndr2->flags = ndr->flags;
return NT_STATUS_OK;
}
/*
advance by 'size' bytes
*/
-NTSTATUS ndr_pull_advance(struct ndr_pull *ndr, uint32 size)
+NTSTATUS ndr_pull_advance(struct ndr_pull *ndr, uint32_t size)
{
ndr->offset += size;
if (ndr->offset > ndr->data_size) {
- return NT_STATUS_BUFFER_TOO_SMALL;
+ return ndr_pull_error(ndr, NDR_ERR_BUFSIZE,
+ "ndr_pull_advance by %u failed",
+ size);
}
return NT_STATUS_OK;
}
/*
set the parse offset to 'ofs'
*/
-NTSTATUS ndr_pull_set_offset(struct ndr_pull *ndr, uint32 ofs)
+NTSTATUS ndr_pull_set_offset(struct ndr_pull *ndr, uint32_t ofs)
{
ndr->offset = ofs;
if (ndr->offset > ndr->data_size) {
- return NT_STATUS_BUFFER_TOO_SMALL;
+ return ndr_pull_error(ndr, NDR_ERR_BUFSIZE,
+ "ndr_pull_set_offset %u failed",
+ ofs);
}
return NT_STATUS_OK;
}
}
-
-
/* create a ndr_push structure, ready for some marshalling */
-struct ndr_push *ndr_push_init(void)
+struct ndr_push *ndr_push_init_ctx(TALLOC_CTX *mem_ctx)
{
struct ndr_push *ndr;
- TALLOC_CTX *mem_ctx = talloc_init("ndr_push_init");
- if (!mem_ctx) return NULL;
- ndr = talloc(mem_ctx, sizeof(*ndr));
+ ndr = talloc_zero(mem_ctx, struct ndr_push);
if (!ndr) {
- talloc_destroy(mem_ctx);
return NULL;
}
- ndr->mem_ctx = mem_ctx;
ndr->flags = 0;
ndr->alloc_size = NDR_BASE_MARSHALL_SIZE;
- ndr->data = talloc(ndr->mem_ctx, ndr->alloc_size);
+ ndr->data = talloc_array(ndr, uint8_t, ndr->alloc_size);
if (!ndr->data) {
- ndr_push_free(ndr);
return NULL;
}
- ndr->offset = 0;
-
+
return ndr;
}
+
+/* create a ndr_push structure, ready for some marshalling */
+struct ndr_push *ndr_push_init(void)
+{
+ return ndr_push_init_ctx(NULL);
+}
+
/* free a ndr_push structure */
void ndr_push_free(struct ndr_push *ndr)
{
- talloc_destroy(ndr->mem_ctx);
+ talloc_free(ndr);
}
/*
expand the available space in the buffer to 'size'
*/
-NTSTATUS ndr_push_expand(struct ndr_push *ndr, uint32 size)
+NTSTATUS ndr_push_expand(struct ndr_push *ndr, uint32_t size)
{
if (ndr->alloc_size >= size) {
return NT_STATUS_OK;
if (size > ndr->alloc_size) {
ndr->alloc_size = size;
}
- ndr->data = talloc_realloc(ndr->mem_ctx, ndr->data, ndr->alloc_size);
+ ndr->data = talloc_realloc(ndr, ndr->data, uint8_t, ndr->alloc_size);
if (!ndr->data) {
- return NT_STATUS_NO_MEMORY;
+ return ndr_push_error(ndr, NDR_ERR_ALLOC, "Failed to push_expand to %u",
+ ndr->alloc_size);
}
return NT_STATUS_OK;
/*
set the push offset to 'ofs'
*/
-NTSTATUS ndr_push_set_offset(struct ndr_push *ndr, uint32 ofs)
+NTSTATUS ndr_push_set_offset(struct ndr_push *ndr, uint32_t ofs)
{
NDR_CHECK(ndr_push_expand(ndr, ofs));
ndr->offset = ofs;
push a generic array
*/
NTSTATUS ndr_push_array(struct ndr_push *ndr, int ndr_flags, void *base,
- size_t elsize, uint32 count,
- NTSTATUS (*push_fn)(struct ndr_push *, int, void *))
+ size_t elsize, uint32_t count,
+ NTSTATUS (*push_fn)(struct ndr_push *, int, void *))
{
int i;
char *p = base;
pull a constant sized array
*/
NTSTATUS ndr_pull_array(struct ndr_pull *ndr, int ndr_flags, void *base,
- size_t elsize, uint32 count,
+ size_t elsize, uint32_t count,
NTSTATUS (*pull_fn)(struct ndr_pull *, int, void *))
{
int i;
return NT_STATUS_OK;
}
+/*
+ pull a constant size array of structures
+*/
+NTSTATUS ndr_pull_struct_array(struct ndr_pull *ndr, uint32_t count,
+ size_t elsize, void **info,
+ NTSTATUS (*pull_fn)(struct ndr_pull *, int, void *))
+{
+ int i;
+ char *base;
+
+ NDR_ALLOC_N_SIZE(ndr, *info, count, elsize);
+ base = (char *)*info;
+
+ for (i = 0; i < count; i++) {
+ ndr->data += ndr->offset;
+ ndr->offset = 0;
+ NDR_CHECK(pull_fn(ndr, NDR_SCALARS|NDR_BUFFERS, &base[count * elsize]));
+ }
+
+ return NT_STATUS_OK;
+}
/*
print a generic array
*/
void ndr_print_array(struct ndr_print *ndr, const char *name, void *base,
- size_t elsize, uint32 count,
+ size_t elsize, uint32_t count,
void (*print_fn)(struct ndr_print *, const char *, void *))
{
int i;
-static void ndr_print_debug_helper(struct ndr_print *ndr, const char *format, ...)
+void ndr_print_debug_helper(struct ndr_print *ndr, const char *format, ...) _PRINTF_ATTRIBUTE(2,3)
{
va_list ap;
char *s = NULL;
/*
a useful helper function for printing idl structures via DEBUG()
*/
-void ndr_print_debug(void (*fn)(struct ndr_print *, const char *, void *),
- const char *name,
- void *ptr)
+void ndr_print_debug(ndr_print_fn_t fn, const char *name, void *ptr)
{
- struct ndr_print ndr;
+ struct ndr_print *ndr;
- ndr.mem_ctx = talloc_init("ndr_print_debug");
- if (!ndr.mem_ctx) return;
- ndr.print = ndr_print_debug_helper;
- ndr.depth = 1;
- fn(&ndr, name, ptr);
- talloc_destroy(ndr.mem_ctx);
+ ndr = talloc_zero(NULL, struct ndr_print);
+ if (!ndr) return;
+ ndr->print = ndr_print_debug_helper;
+ ndr->depth = 1;
+ ndr->flags = 0;
+ fn(ndr, name, ptr);
+ talloc_free(ndr);
}
/*
- a useful helper function for printing idl unions via DEBUG()
+ a useful helper function for printing idl function calls via DEBUG()
*/
-void ndr_print_union_debug(void (*fn)(struct ndr_print *, const char *, uint16, void *),
- const char *name,
- uint16 level,
- void *ptr)
+void ndr_print_function_debug(ndr_print_function_t fn, const char *name, int flags, void *ptr)
+{
+ struct ndr_print *ndr;
+
+ ndr = talloc_zero(NULL, struct ndr_print);
+ if (!ndr) return;
+ ndr->print = ndr_print_debug_helper;
+ ndr->depth = 1;
+ ndr->flags = 0;
+ fn(ndr, name, flags, ptr);
+ talloc_free(ndr);
+}
+
+void ndr_set_flags(uint32_t *pflags, uint32_t new_flags)
+{
+ /* the big/little endian flags are inter-dependent */
+ if (new_flags & LIBNDR_FLAG_LITTLE_ENDIAN) {
+ (*pflags) &= ~LIBNDR_FLAG_BIGENDIAN;
+ }
+ if (new_flags & LIBNDR_FLAG_BIGENDIAN) {
+ (*pflags) &= ~LIBNDR_FLAG_LITTLE_ENDIAN;
+ }
+ (*pflags) |= new_flags;
+}
+
+static NTSTATUS ndr_map_error(enum ndr_err_code err)
{
- struct ndr_print ndr;
+ switch (err) {
+ case NDR_ERR_BUFSIZE:
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ case NDR_ERR_TOKEN:
+ return NT_STATUS_INTERNAL_ERROR;
+ case NDR_ERR_ALLOC:
+ return NT_STATUS_NO_MEMORY;
+ case NDR_ERR_ARRAY_SIZE:
+ return NT_STATUS_ARRAY_BOUNDS_EXCEEDED;
+ default:
+ break;
+ }
- ndr.mem_ctx = talloc_init("ndr_print_debug");
- if (!ndr.mem_ctx) return;
- ndr.print = ndr_print_debug_helper;
- ndr.depth = 1;
- fn(&ndr, name, level, ptr);
- talloc_destroy(ndr.mem_ctx);
+ /* we should all error codes to different status codes */
+ return NT_STATUS_INVALID_PARAMETER;
}
/*
return and possibly log an NDR error
*/
-NTSTATUS ndr_pull_error(struct ndr_pull *ndr, enum ndr_err_code err, const char *format, ...)
+NTSTATUS ndr_pull_error(struct ndr_pull *ndr,
+ enum ndr_err_code err, const char *format, ...) _PRINTF_ATTRIBUTE(3,4)
{
char *s=NULL;
va_list ap;
DEBUG(3,("ndr_pull_error(%u): %s\n", err, s));
free(s);
- /* we should map to different status codes */
- return NT_STATUS_INVALID_PARAMETER;
+
+ return ndr_map_error(err);
}
/*
return and possibly log an NDR error
*/
-NTSTATUS ndr_push_error(struct ndr_push *ndr, enum ndr_err_code err, const char *format, ...)
+NTSTATUS ndr_push_error(struct ndr_push *ndr, enum ndr_err_code err, const char *format, ...) _PRINTF_ATTRIBUTE(3,4)
{
char *s=NULL;
va_list ap;
DEBUG(3,("ndr_push_error(%u): %s\n", err, s));
free(s);
- /* we should map to different status codes */
- return NT_STATUS_INVALID_PARAMETER;
+
+ return ndr_map_error(err);
+}
+
+
+/*
+ handle subcontext buffers, which in midl land are user-marshalled, but
+ we use magic in pidl to make them easier to cope with
+*/
+NTSTATUS ndr_pull_subcontext_header(struct ndr_pull *ndr,
+ size_t header_size,
+ ssize_t size_is,
+ struct ndr_pull *ndr2)
+{
+ ndr2->flags = ndr->flags;
+
+ switch (header_size) {
+ case 0: {
+ uint32_t content_size = ndr->data_size - ndr->offset;
+ if (size_is >= 0) {
+ content_size = size_is;
+ }
+ NDR_CHECK(ndr_pull_subcontext(ndr, ndr2, content_size));
+ break;
+ }
+
+ case 2: {
+ uint16_t content_size;
+ NDR_CHECK(ndr_pull_uint16(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",
+ size_is, content_size);
+ }
+ NDR_CHECK(ndr_pull_subcontext(ndr, ndr2, content_size));
+ break;
+ }
+
+ case 4: {
+ uint32_t content_size;
+ NDR_CHECK(ndr_pull_uint32(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",
+ size_is, content_size);
+ }
+ NDR_CHECK(ndr_pull_subcontext(ndr, ndr2, content_size));
+ break;
+ }
+ default:
+ return ndr_pull_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PULL) header_size %d",
+ header_size);
+ }
+ return NT_STATUS_OK;
+}
+
+/*
+ push a subcontext header
+*/
+NTSTATUS ndr_push_subcontext_header(struct ndr_push *ndr,
+ size_t header_size,
+ ssize_t size_is,
+ struct ndr_push *ndr2)
+{
+ if (size_is >= 0) {
+ ssize_t padding_len = size_is - ndr2->offset;
+ if (padding_len > 0) {
+ NDR_CHECK(ndr_push_zero(ndr2, padding_len));
+ } else if (padding_len < 0) {
+ return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext (PUSH) content_size %d is larger than size_is(%d)",
+ ndr2->offset, size_is);
+ }
+ }
+
+ switch (header_size) {
+ case 0:
+ break;
+
+ case 2:
+ NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, ndr2->offset));
+ break;
+
+ case 4:
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, ndr2->offset));
+ break;
+
+ default:
+ return ndr_push_error(ndr, NDR_ERR_SUBCONTEXT, "Bad subcontext header size %d",
+ header_size);
+ }
+ return NT_STATUS_OK;
+}
+
+/*
+ mark the start of a structure
+*/
+NTSTATUS ndr_pull_struct_start(struct ndr_pull *ndr)
+{
+ return NT_STATUS_OK;
+}
+
+/*
+ mark the end of a structure
+*/
+void ndr_pull_struct_end(struct ndr_pull *ndr)
+{
+}
+
+/*
+ mark the start of a structure
+*/
+NTSTATUS ndr_push_struct_start(struct ndr_push *ndr)
+{
+ return NT_STATUS_OK;
+}
+
+/*
+ mark the end of a structure
+*/
+void ndr_push_struct_end(struct ndr_push *ndr)
+{
+}
+
+/*
+ store a token in the ndr context, for later retrieval
+*/
+static NTSTATUS ndr_token_store(TALLOC_CTX *mem_ctx,
+ struct ndr_token_list **list,
+ const void *key,
+ uint32_t value)
+{
+ struct ndr_token_list *tok;
+ tok = talloc(mem_ctx, struct ndr_token_list);
+ if (tok == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ tok->key = key;
+ tok->value = value;
+ DLIST_ADD((*list), tok);
+ return NT_STATUS_OK;
+}
+
+/*
+ retrieve a token from a ndr context
+*/
+static NTSTATUS ndr_token_retrieve(struct ndr_token_list **list, const void *key, uint32_t *v)
+{
+ struct ndr_token_list *tok;
+ for (tok=*list;tok;tok=tok->next) {
+ if (tok->key == key) {
+ DLIST_REMOVE((*list), tok);
+ *v = tok->value;
+ return NT_STATUS_OK;
+ }
+ }
+ return ndr_map_error(NDR_ERR_TOKEN);
+}
+
+/*
+ peek at but don't removed a token from a ndr context
+*/
+static uint32_t ndr_token_peek(struct ndr_token_list **list, const void *key)
+{
+ struct ndr_token_list *tok;
+ for (tok=*list;tok;tok=tok->next) {
+ if (tok->key == key) {
+ return tok->value;
+ }
+ }
+ return 0;
+}
+
+/*
+ pull an array size field and add it to the array_size_list token list
+*/
+NTSTATUS ndr_pull_array_size(struct ndr_pull *ndr, const void *p)
+{
+ uint32_t size;
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &size));
+ return ndr_token_store(ndr, &ndr->array_size_list, p, size);
+}
+
+/*
+ get the stored array size field
+*/
+uint32_t ndr_get_array_size(struct ndr_pull *ndr, const void *p)
+{
+ return ndr_token_peek(&ndr->array_size_list, p);
+}
+
+/*
+ check the stored array size field
+*/
+NTSTATUS ndr_check_array_size(struct ndr_pull *ndr, void *p, uint32_t size)
+{
+ uint32_t stored;
+ NDR_CHECK(ndr_token_retrieve(&ndr->array_size_list, p, &stored));
+ if (stored != size) {
+ return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE,
+ "Bad array size - got %u expected %u\n",
+ stored, size);
+ }
+ return NT_STATUS_OK;
+}
+
+/*
+ pull an array length field and add it to the array_length_list token list
+*/
+NTSTATUS ndr_pull_array_length(struct ndr_pull *ndr, const void *p)
+{
+ uint32_t length, offset;
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &offset));
+ if (offset != 0) {
+ return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE,
+ "non-zero array offset %u\n", offset);
+ }
+ NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &length));
+ return ndr_token_store(ndr, &ndr->array_length_list, p, length);
+}
+
+/*
+ get the stored array length field
+*/
+uint32_t ndr_get_array_length(struct ndr_pull *ndr, const void *p)
+{
+ return ndr_token_peek(&ndr->array_length_list, p);
+}
+
+/*
+ check the stored array length field
+*/
+NTSTATUS ndr_check_array_length(struct ndr_pull *ndr, void *p, uint32_t length)
+{
+ uint32_t stored;
+ NDR_CHECK(ndr_token_retrieve(&ndr->array_length_list, p, &stored));
+ if (stored != length) {
+ return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE,
+ "Bad array length - got %u expected %u\n",
+ stored, length);
+ }
+ return NT_STATUS_OK;
+}
+
+/*
+ store a switch value
+ */
+NTSTATUS ndr_push_set_switch_value(struct ndr_push *ndr, const void *p, uint32_t val)
+{
+ return ndr_token_store(ndr, &ndr->switch_list, p, val);
+}
+
+NTSTATUS ndr_pull_set_switch_value(struct ndr_pull *ndr, const void *p, uint32_t val)
+{
+ return ndr_token_store(ndr, &ndr->switch_list, p, val);
+}
+
+NTSTATUS ndr_print_set_switch_value(struct ndr_print *ndr, const void *p, uint32_t val)
+{
+ return ndr_token_store(ndr, &ndr->switch_list, p, val);
+}
+
+/*
+ retrieve a switch value
+ */
+uint32_t ndr_push_get_switch_value(struct ndr_push *ndr, const void *p)
+{
+ return ndr_token_peek(&ndr->switch_list, p);
+}
+
+uint32_t ndr_pull_get_switch_value(struct ndr_pull *ndr, const void *p)
+{
+ return ndr_token_peek(&ndr->switch_list, p);
+}
+
+uint32_t ndr_print_get_switch_value(struct ndr_print *ndr, const void *p)
+{
+ return ndr_token_peek(&ndr->switch_list, p);
+}
+
+/*
+ pull a relative object - stage1
+ called during SCALARS processing
+*/
+NTSTATUS ndr_pull_relative_ptr1(struct ndr_pull *ndr, const void *p, uint32_t rel_offset)
+{
+ if (ndr->flags & LIBNDR_FLAG_RELATIVE_CURRENT) {
+ return ndr_token_store(ndr, &ndr->relative_list, p,
+ rel_offset + ndr->offset - 4);
+ } else {
+ return ndr_token_store(ndr, &ndr->relative_list, p, rel_offset);
+ }
+}
+
+/*
+ pull a relative object - stage2
+ called during BUFFERS processing
+*/
+NTSTATUS ndr_pull_relative_ptr2(struct ndr_pull *ndr, const void *p)
+{
+ uint32_t rel_offset;
+ NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &rel_offset));
+ return ndr_pull_set_offset(ndr, rel_offset);
+}
+
+/*
+ push a relative object - stage1
+ this is called during SCALARS processing
+*/
+NTSTATUS ndr_push_relative_ptr1(struct ndr_push *ndr, const void *p)
+{
+ if (p == NULL) {
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
+ return NT_STATUS_OK;
+ }
+ NDR_CHECK(ndr_push_align(ndr, 4));
+ NDR_CHECK(ndr_token_store(ndr, &ndr->relative_list, p, ndr->offset));
+ return ndr_push_uint32(ndr, NDR_SCALARS, 0xFFFFFFFF);
+}
+
+/*
+ push a relative object - stage2
+ this is called during buffers processing
+*/
+NTSTATUS ndr_push_relative_ptr2(struct ndr_push *ndr, const void *p)
+{
+ struct ndr_push_save save;
+ if (p == NULL) {
+ return NT_STATUS_OK;
+ }
+ NDR_CHECK(ndr_push_align(ndr, 4));
+ ndr_push_save(ndr, &save);
+ NDR_CHECK(ndr_token_retrieve(&ndr->relative_list, p, &ndr->offset));
+ if (ndr->flags & LIBNDR_FLAG_RELATIVE_CURRENT) {
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, save.offset - ndr->offset));
+ } else {
+ NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, save.offset));
+ }
+ ndr_push_restore(ndr, &save);
+ return NT_STATUS_OK;
+}
+
+/*
+ pull a struct from a blob using NDR
+*/
+NTSTATUS ndr_pull_struct_blob(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, void *p,
+ ndr_pull_flags_fn_t fn)
+{
+ struct ndr_pull *ndr;
+ ndr = ndr_pull_init_blob(blob, mem_ctx);
+ if (!ndr) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return fn(ndr, NDR_SCALARS|NDR_BUFFERS, p);
+}
+
+/*
+ pull a struct from a blob using NDR - failing if all bytes are not consumed
+*/
+NTSTATUS ndr_pull_struct_blob_all(const DATA_BLOB *blob, TALLOC_CTX *mem_ctx, void *p,
+ ndr_pull_flags_fn_t fn)
+{
+ struct ndr_pull *ndr;
+ NTSTATUS status;
+
+ ndr = ndr_pull_init_blob(blob, mem_ctx);
+ if (!ndr) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ status = fn(ndr, NDR_SCALARS|NDR_BUFFERS, p);
+ if (!NT_STATUS_IS_OK(status)) return status;
+ if (ndr->offset != ndr->data_size) {
+ return NT_STATUS_BUFFER_TOO_SMALL;
+ }
+ return status;
+}
+
+/*
+ push a struct to a blob using NDR
+*/
+NTSTATUS ndr_push_struct_blob(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, void *p,
+ ndr_push_flags_fn_t fn)
+{
+ NTSTATUS status;
+ struct ndr_push *ndr;
+ ndr = ndr_push_init_ctx(mem_ctx);
+ if (!ndr) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ status = fn(ndr, NDR_SCALARS|NDR_BUFFERS, p);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ *blob = ndr_push_blob(ndr);
+
+ return NT_STATUS_OK;
+}
+
+/*
+ generic ndr_size_*() handler for structures
+*/
+size_t ndr_size_struct(const void *p, int flags, ndr_push_flags_fn_t push)
+{
+ struct ndr_push *ndr;
+ NTSTATUS status;
+ size_t ret;
+
+ /* avoid recursion */
+ if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0;
+
+ ndr = ndr_push_init_ctx(NULL);
+ if (!ndr) return 0;
+ ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE;
+ status = push(ndr, NDR_SCALARS|NDR_BUFFERS, discard_const(p));
+ if (!NT_STATUS_IS_OK(status)) {
+ return 0;
+ }
+ ret = ndr->offset;
+ talloc_free(ndr);
+ return ret;
+}
+
+/*
+ generic ndr_size_*() handler for unions
+*/
+size_t ndr_size_union(const void *p, int flags, uint32_t level, ndr_push_flags_fn_t push)
+{
+ struct ndr_push *ndr;
+ NTSTATUS status;
+ size_t ret;
+
+ /* avoid recursion */
+ if (flags & LIBNDR_FLAG_NO_NDR_SIZE) return 0;
+
+ ndr = ndr_push_init_ctx(NULL);
+ if (!ndr) return 0;
+ ndr->flags |= flags | LIBNDR_FLAG_NO_NDR_SIZE;
+ ndr_push_set_switch_value(ndr, p, level);
+ status = push(ndr, NDR_SCALARS|NDR_BUFFERS, discard_const(p));
+ if (!NT_STATUS_IS_OK(status)) {
+ return 0;
+ }
+ ret = ndr->offset;
+ talloc_free(ndr);
+ return ret;
}
git.samba.org / samba.git / blobdiff