s3: Make map_open_params_to_ntcreate() available in lib/

1 files changed, 148 insertions, 0 deletions

diff --git a/source3/lib/util.c b/source3/lib/util.c
index b320931146..689d41ed17 100644
--- a/source3/lib/util.c
+++ b/source3/lib/util.c
@@ -29,6 +29,7 @@
 #include "../lib/util/util_pw.h"
 #include "messages.h"
 #include <ccan/hash/hash.h>
+#include "libcli/security/security.h"
 
 /* Max allowable allococation - 256mb - 0x10000000 */
 #define MAX_ALLOC_SIZE (1024*1024*256)
@@ -2255,3 +2256,150 @@ bool is_executable(const char *fname)
 	}
 	return False;
 }
+
+/****************************************************************************
+ Open a file with a share mode - old openX method - map into NTCreate.
+****************************************************************************/
+
+bool map_open_params_to_ntcreate(const char *smb_base_fname,
+				 int deny_mode, int open_func,
+				 uint32 *paccess_mask,
+				 uint32 *pshare_mode,
+				 uint32 *pcreate_disposition,
+				 uint32 *pcreate_options,
+				 uint32_t *pprivate_flags)
+{
+	uint32 access_mask;
+	uint32 share_mode;
+	uint32 create_disposition;
+	uint32 create_options = FILE_NON_DIRECTORY_FILE;
+	uint32_t private_flags = 0;
+
+	DEBUG(10,("map_open_params_to_ntcreate: fname = %s, deny_mode = 0x%x, "
+		  "open_func = 0x%x\n",
+		  smb_base_fname, (unsigned int)deny_mode,
+		  (unsigned int)open_func ));
+
+	/* Create the NT compatible access_mask. */
+	switch (GET_OPENX_MODE(deny_mode)) {
+		case DOS_OPEN_EXEC: /* Implies read-only - used to be FILE_READ_DATA */
+		case DOS_OPEN_RDONLY:
+			access_mask = FILE_GENERIC_READ;
+			break;
+		case DOS_OPEN_WRONLY:
+			access_mask = FILE_GENERIC_WRITE;
+			break;
+		case DOS_OPEN_RDWR:
+		case DOS_OPEN_FCB:
+			access_mask = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
+			break;
+		default:
+			DEBUG(10,("map_open_params_to_ntcreate: bad open mode = 0x%x\n",
+				  (unsigned int)GET_OPENX_MODE(deny_mode)));
+			return False;
+	}
+
+	/* Create the NT compatible create_disposition. */
+	switch (open_func) {
+		case OPENX_FILE_EXISTS_FAIL|OPENX_FILE_CREATE_IF_NOT_EXIST:
+			create_disposition = FILE_CREATE;
+			break;
+
+		case OPENX_FILE_EXISTS_OPEN:
+			create_disposition = FILE_OPEN;
+			break;
+
+		case OPENX_FILE_EXISTS_OPEN|OPENX_FILE_CREATE_IF_NOT_EXIST:
+			create_disposition = FILE_OPEN_IF;
+			break;
+
+		case OPENX_FILE_EXISTS_TRUNCATE:
+			create_disposition = FILE_OVERWRITE;
+			break;
+
+		case OPENX_FILE_EXISTS_TRUNCATE|OPENX_FILE_CREATE_IF_NOT_EXIST:
+			create_disposition = FILE_OVERWRITE_IF;
+			break;
+
+		default:
+			/* From samba4 - to be confirmed. */
+			if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_EXEC) {
+				create_disposition = FILE_CREATE;
+				break;
+			}
+			DEBUG(10,("map_open_params_to_ntcreate: bad "
+				  "open_func 0x%x\n", (unsigned int)open_func));
+			return False;
+	}
+
+	/* Create the NT compatible share modes. */
+	switch (GET_DENY_MODE(deny_mode)) {
+		case DENY_ALL:
+			share_mode = FILE_SHARE_NONE;
+			break;
+
+		case DENY_WRITE:
+			share_mode = FILE_SHARE_READ;
+			break;
+
+		case DENY_READ:
+			share_mode = FILE_SHARE_WRITE;
+			break;
+
+		case DENY_NONE:
+			share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
+			break;
+
+		case DENY_DOS:
+			private_flags |= NTCREATEX_OPTIONS_PRIVATE_DENY_DOS;
+	                if (is_executable(smb_base_fname)) {
+				share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
+			} else {
+				if (GET_OPENX_MODE(deny_mode) == DOS_OPEN_RDONLY) {
+					share_mode = FILE_SHARE_READ;
+				} else {
+					share_mode = FILE_SHARE_NONE;
+				}
+			}
+			break;
+
+		case DENY_FCB:
+			private_flags |= NTCREATEX_OPTIONS_PRIVATE_DENY_FCB;
+			share_mode = FILE_SHARE_NONE;
+			break;
+
+		default:
+			DEBUG(10,("map_open_params_to_ntcreate: bad deny_mode 0x%x\n",
+				(unsigned int)GET_DENY_MODE(deny_mode) ));
+			return False;
+	}
+
+	DEBUG(10,("map_open_params_to_ntcreate: file %s, access_mask = 0x%x, "
+		  "share_mode = 0x%x, create_disposition = 0x%x, "
+		  "create_options = 0x%x private_flags = 0x%x\n",
+		  smb_base_fname,
+		  (unsigned int)access_mask,
+		  (unsigned int)share_mode,
+		  (unsigned int)create_disposition,
+		  (unsigned int)create_options,
+		  (unsigned int)private_flags));
+
+	if (paccess_mask) {
+		*paccess_mask = access_mask;
+	}
+	if (pshare_mode) {
+		*pshare_mode = share_mode;
+	}
+	if (pcreate_disposition) {
+		*pcreate_disposition = create_disposition;
+	}
+	if (pcreate_options) {
+		*pcreate_options = create_options;
+	}
+	if (pprivate_flags) {
+		*pprivate_flags = private_flags;
+	}
+
+	return True;
+
+}