1 files changed, 258 insertions, 0 deletions
diff --git a/librpc/ndr/uuid.c b/librpc/ndr/uuid.c
new file mode 100644
index 0000000..a759900
--- /dev/null
+++ b/librpc/ndr/uuid.c
@@ -0,0 +1,258 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   UUID/GUID functions
+
+   Copyright (C) Theodore Ts'o               1996, 1997,
+   Copyright (C) Jim McDonough                     2002.
+   Copyright (C) Andrew Tridgell                   2003.
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "lib/util/samba_util.h"
+#include "lib/util/genrand.h"
+#include "librpc/ndr/libndr.h"
+#include "librpc/gen_ndr/ndr_misc.h"
+#include "lib/util/util_str_hex.h"
+
+_PUBLIC_ NTSTATUS GUID_to_ndr_buf(
+	const struct GUID *guid, struct GUID_ndr_buf *buf)
+{
+	DATA_BLOB b = { .data = buf->buf, .length = sizeof(buf->buf), };
+	enum ndr_err_code ndr_err;
+
+	ndr_err = ndr_push_struct_into_fixed_blob(
+		&b, guid, (ndr_push_flags_fn_t)ndr_push_GUID);
+	return ndr_map_error2ntstatus(ndr_err);
+}
+
+/**
+  build a NDR blob from a GUID
+*/
+_PUBLIC_ NTSTATUS GUID_to_ndr_blob(const struct GUID *guid, TALLOC_CTX *mem_ctx, DATA_BLOB *b)
+{
+	struct GUID_ndr_buf buf = { .buf = {0}, };
+	NTSTATUS status;
+
+	status = GUID_to_ndr_buf(guid, &buf);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	*b = data_blob_talloc(mem_ctx, buf.buf, sizeof(buf.buf));
+	if (b->data == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	return NT_STATUS_OK;
+}
+
+
+/**
+  build a GUID from a NDR data blob
+*/
+_PUBLIC_ NTSTATUS GUID_from_ndr_blob(const DATA_BLOB *b, struct GUID *guid)
+{
+	enum ndr_err_code ndr_err =
+		ndr_pull_struct_blob_all_noalloc(b, guid,
+						 (ndr_pull_flags_fn_t)ndr_pull_GUID);
+	return ndr_map_error2ntstatus(ndr_err);
+}
+
+
+/**
+  build a GUID from a string
+*/
+_PUBLIC_ NTSTATUS GUID_from_data_blob(const DATA_BLOB *s, struct GUID *guid)
+{
+	bool ok;
+
+	if (s->data == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (s->length == 36) {
+		ok = parse_guid_string((char *)s->data, guid);
+		return ok ? NT_STATUS_OK : NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (s->length == 38) {
+		if (s->data[0] != '{' || s->data[37] != '}') {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+		ok = parse_guid_string((char *)s->data + 1, guid);
+		return ok ? NT_STATUS_OK : NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (s->length == 32) {
+		uint8_t buf16[16] = {0};
+		DATA_BLOB blob16 = { .data = buf16, .length = sizeof(buf16) };
+		size_t rlen = strhex_to_str((char *)blob16.data, blob16.length,
+					    (const char *)s->data, s->length);
+		if (rlen != blob16.length) {
+			return NT_STATUS_INVALID_PARAMETER;
+		}
+
+		return GUID_from_ndr_blob(&blob16, guid);
+	}
+
+	if (s->length == 16) {
+		return GUID_from_ndr_blob(s, guid);
+	}
+
+	return NT_STATUS_INVALID_PARAMETER;
+}
+
+/**
+  build a GUID from a string
+*/
+_PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
+{
+	DATA_BLOB blob = data_blob_string_const(s);
+	return GUID_from_data_blob(&blob, guid);
+}
+
+/**
+ * generate a random GUID
+ */
+_PUBLIC_ struct GUID GUID_random(void)
+{
+	struct GUID guid;
+
+	generate_random_buffer((uint8_t *)&guid, sizeof(guid));
+	guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
+	guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
+
+	return guid;
+}
+
+/**
+ * generate an empty GUID 
+ */
+_PUBLIC_ struct GUID GUID_zero(void)
+{
+	return (struct GUID) { .time_low = 0 };
+}
+
+_PUBLIC_ bool GUID_all_zero(const struct GUID *u)
+{
+	if (u->time_low != 0 ||
+	    u->time_mid != 0 ||
+	    u->time_hi_and_version != 0 ||
+	    u->clock_seq[0] != 0 ||
+	    u->clock_seq[1] != 0 ||
+	    !all_zero(u->node, 6)) {
+		return false;
+	}
+	return true;
+}
+
+_PUBLIC_ bool GUID_equal(const struct GUID *u1, const struct GUID *u2)
+{
+	return (GUID_compare(u1, u2) == 0);
+}
+
+_PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
+{
+	if (u1->time_low != u2->time_low) {
+		return u1->time_low > u2->time_low ? 1 : -1;
+	}
+
+	if (u1->time_mid != u2->time_mid) {
+		return u1->time_mid > u2->time_mid ? 1 : -1;
+	}
+
+	if (u1->time_hi_and_version != u2->time_hi_and_version) {
+		return u1->time_hi_and_version > u2->time_hi_and_version ? 1 : -1;
+	}
+
+	if (u1->clock_seq[0] != u2->clock_seq[0]) {
+		return u1->clock_seq[0] > u2->clock_seq[0] ? 1 : -1;
+	}
+
+	if (u1->clock_seq[1] != u2->clock_seq[1]) {
+		return u1->clock_seq[1] > u2->clock_seq[1] ? 1 : -1;
+	}
+
+	return memcmp(u1->node, u2->node, 6);
+}
+
+/**
+  its useful to be able to display these in debugging messages
+*/
+_PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
+{
+	struct GUID_txt_buf buf;
+	return talloc_strdup(mem_ctx, GUID_buf_string(guid, &buf));
+}
+
+/**
+ * Does the same without allocating memory, using the structure buffer.
+ * Useful for debug messages, so that you do not have to talloc_free the result
+ */
+_PUBLIC_ char* GUID_buf_string(const struct GUID *guid,
+			       struct GUID_txt_buf *dst)
+{
+	if (!guid) {
+		return NULL;
+	}
+	snprintf(dst->buf, sizeof(dst->buf),
+		 "%08"PRIx32"-%04"PRIx16"-%04"PRIx16"-%02"PRIx8"%02"PRIx8"-%02"PRIx8"%02"PRIx8"%02"PRIx8"%02"PRIx8"%02"PRIx8"%02"PRIx8,
+		 guid->time_low, guid->time_mid,
+		 guid->time_hi_and_version,
+		 guid->clock_seq[0],
+		 guid->clock_seq[1],
+		 guid->node[0], guid->node[1],
+		 guid->node[2], guid->node[3],
+		 guid->node[4], guid->node[5]);
+	return dst->buf;
+}
+
+_PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
+{
+	struct GUID_txt_buf buf;
+	char *ret = talloc_asprintf(
+		mem_ctx, "{%s}", GUID_buf_string(guid, &buf));
+	return ret;
+}
+
+_PUBLIC_ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid)
+{
+	char *ret = NULL;
+	DATA_BLOB guid_blob = { .data = NULL };
+	NTSTATUS status;
+
+	status = GUID_to_ndr_blob(guid, mem_ctx, &guid_blob);
+	if (NT_STATUS_IS_OK(status)) {
+		ret = data_blob_hex_string_upper(mem_ctx, &guid_blob);
+	}
+	TALLOC_FREE(guid_blob.data);
+	return ret;
+}
+
+_PUBLIC_ bool ndr_policy_handle_empty(const struct policy_handle *h)
+{
+	return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
+}
+
+_PUBLIC_ bool ndr_policy_handle_equal(const struct policy_handle *hnd1,
+				  const struct policy_handle *hnd2)
+{
+	if (!hnd1 || !hnd2) {
+		return false;
+	}
+
+	return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
+}