The functionality in this file has been moved into smbd/unix_acls.c in order

to make the acl functionality regular (we can have smbd/posix_acls etc).
Jeremy.
(This used to be commit 9adb9399df27c5c1d7fec04f80d49e5476200738)

1 files changed, 0 insertions, 679 deletions

diff --git a/source3/lib/util_unixsd.c b/source3/lib/util_unixsd.c
deleted file mode 100644
index bee9f69641..0000000000
--- a/source3/lib/util_unixsd.c
+++ /dev/null
@@ -1,679 +0,0 @@
-/*
-   Unix SMB/Netbios implementation.
-   Version 1.9.
-   SMB NT Security Descriptor / Unix permission conversion.
-   Copyright (C) Jeremy Allison 1994-2000
-
-   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 2 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, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-#include "rpc_parse.h"
-#include "sids.h"
-
-#ifndef WITH_SURS
-extern DOM_SID global_sid_World;
-#define global_sid_everyone &global_sid_World
-#endif
-
-
-/****************************************************************************
- Map unix perms to NT.
-****************************************************************************/
-
-static SEC_ACCESS map_unix_perms(int *pacl_type, mode_t perm, int r_mask,
-				 int w_mask, int x_mask, BOOL is_directory)
-{
-	SEC_ACCESS sa;
-	uint32 nt_mask = 0;
-
-	*pacl_type = SEC_ACE_TYPE_ACCESS_ALLOWED;
-
-	if ((perm & (r_mask | w_mask | x_mask)) == (r_mask | w_mask | x_mask))
-	{
-		nt_mask = UNIX_ACCESS_RWX;
-	}
-	else if ((perm & (r_mask | w_mask | x_mask)) == 0)
-	{
-		nt_mask = UNIX_ACCESS_NONE;
-	}
-	else
-	{
-		nt_mask |= (perm & r_mask) ? UNIX_ACCESS_R : 0;
-		if (is_directory)
-			nt_mask |= (perm & w_mask) ? UNIX_ACCESS_W : 0;
-		else
-			nt_mask |= (perm & w_mask) ? UNIX_ACCESS_W : 0;
-		nt_mask |= (perm & x_mask) ? UNIX_ACCESS_X : 0;
-	}
-	make_sec_access(&sa, nt_mask);
-	return sa;
-}
-
-/****************************************************************************
- Function to create owner and group SIDs from a SMB_STRUCT_STAT.
-****************************************************************************/
-
-static BOOL create_file_sids(const SMB_STRUCT_STAT * psbuf,
-			     DOM_SID *powner_sid, DOM_SID *pgroup_sid)
-{
-	extern DOM_SID global_sam_sid;
-
-	sid_copy(powner_sid, &global_sam_sid);
-	sid_copy(pgroup_sid, &global_sam_sid);
-	sid_append_rid(powner_sid, pdb_uid_to_user_rid(psbuf->st_uid));
-	sid_append_rid(pgroup_sid, pdb_gid_to_group_rid(psbuf->st_gid));
-	return True;
-}
-
-#ifdef WITH_SURS
-static BOOL create_file_sids(const SMB_STRUCT_STAT * psbuf,
-			     DOM_SID *powner_sid, DOM_SID *pgroup_sid)
-{
-	SURS_POSIX_ID id;
-
-	ZERO_STRUCTP(powner_sid);
-	ZERO_STRUCTP(pgroup_sid);
-	DEBUG(0, ("TODO: create_file_sids: not ok "
-		  "to assume gid is NT group\n"));
-
-	id.type = SURS_POSIX_UID;
-	id.id = (uint32)psbuf->st_uid;
-
-	if (!surs_unixid_to_sam_sid(&id, powner_sid, False))
-	{
-		DEBUG(3, ("create_file_sids: map uid %d failed\n",
-			  (int)psbuf->st_uid));
-		return False;
-	}
-
-	id.type = SURS_POSIX_GID;
-	id.id = (uint32)psbuf->st_gid;
-
-	if (!surs_unixid_to_sam_sid(&id, pgroup_sid, False))
-	{
-		DEBUG(3, ("create_file_sids: map gid %d failed\n",
-			  (int)psbuf->st_gid));
-		return False;
-	}
-	return True;
-}
-#endif
-
-/****************************************************************************
- Reply to query a security descriptor from an fsp. If it succeeds it allocates
- the space for the return elements and returns True.
-****************************************************************************/
-
-size_t convertperms_unix_to_sd(const SMB_STRUCT_STAT * sbuf,
-			       BOOL is_directory, mode_t mode,
-			       SEC_DESC ** ppdesc)
-{
-	SEC_ACE *ace_list = NULL;
-	DOM_SID owner_sid;
-	DOM_SID group_sid;
-	size_t sec_desc_size;
-	SEC_ACL *psa = NULL;
-	SEC_ACCESS owner_access;
-	int owner_acl_type;
-	SEC_ACCESS group_access;
-	int grp_acl_type;
-	SEC_ACCESS other_access;
-	int other_acl_type;
-	int num_acls = 0;
-
-	(*ppdesc) = NULL;
-
-	if (!lp_nt_acl_support() || sbuf == NULL)
-	{
-		sid_copy(&owner_sid, global_sid_everyone);
-		sid_copy(&group_sid, global_sid_everyone);
-	}
-	else
-	{
-		if (!create_file_sids(sbuf, &owner_sid, &group_sid))
-		{
-			DEBUG(3, ("create_file_sids: uid or gid "
-				  "not mapped to SIDS\n"));
-			return 0;
-		}
-
-		/*
-		 * Create the generic 3 element UNIX acl.
-		 */
-
-		owner_access = map_unix_perms(&owner_acl_type, sbuf->st_mode,
-					      S_IRUSR, S_IWUSR, S_IXUSR,
-					      is_directory);
-		group_access = map_unix_perms(&grp_acl_type, sbuf->st_mode,
-					      S_IRGRP, S_IWGRP, S_IXGRP,
-					      is_directory);
-		other_access = map_unix_perms(&other_acl_type, sbuf->st_mode,
-					      S_IROTH, S_IWOTH, S_IXOTH,
-					      is_directory);
-
-		if (owner_access.mask)
-		{
-			ace_list = g_renew(SEC_ACE, ace_list, num_acls + 1);
-			if (ace_list == NULL)
-			{
-				return 0;
-			}
-			make_sec_ace(&ace_list[num_acls++], &owner_sid,
-				     owner_acl_type, owner_access, 0);
-		}
-
-		if (group_access.mask)
-		{
-			ace_list = g_renew(SEC_ACE, ace_list, num_acls + 1);
-			if (ace_list == NULL)
-			{
-				return 0;
-			}
-
-			make_sec_ace(&ace_list[num_acls++], &group_sid,
-				     grp_acl_type, group_access, 0);
-		}
-
-		if (other_access.mask)
-		{
-			ace_list = g_renew(SEC_ACE, ace_list, num_acls + 1);
-			if (ace_list == NULL)
-			{
-				return 0;
-			}
-
-			make_sec_ace(&ace_list[num_acls++],
-				     global_sid_everyone, other_acl_type,
-				     other_access, 0);
-		}
-
-		if (is_directory)
-		{
-			/*
-			 * For directory ACLs we also add in the
-			 * inherited permissions ACE entries. These
-			 * are the permissions a file would get when
-			 * being created in the directory.
-			 */
-
-			owner_access = map_unix_perms(&owner_acl_type, mode,
-						      S_IRUSR, S_IWUSR,
-						      S_IXUSR, is_directory);
-			group_access = map_unix_perms(&grp_acl_type,
-						      mode, S_IRGRP,
-						      S_IWGRP, S_IXGRP,
-						      is_directory);
-			other_access = map_unix_perms(&other_acl_type,
-						      mode, S_IROTH,
-						      S_IWOTH, S_IXOTH,
-						      is_directory);
-
-			if (owner_access.mask)
-			{
-				ace_list = g_renew(SEC_ACE, ace_list,
-						   num_acls + 1);
-				if (ace_list == NULL)
-				{
-					return 0;
-				}
-
-				make_sec_ace(&ace_list[num_acls++],
-					     &owner_sid, owner_acl_type,
-					     owner_access,
-					     SEC_ACE_FLAG_OBJECT_INHERIT |
-					     SEC_ACE_FLAG_INHERIT_ONLY);
-			}
-
-			if (group_access.mask)
-			{
-				ace_list = g_renew(SEC_ACE, ace_list,
-						   num_acls + 1);
-				if (ace_list == NULL)
-				{
-					return 0;
-				}
-
-				make_sec_ace(&ace_list[num_acls++],
-					     &group_sid, grp_acl_type,
-					     group_access,
-					     SEC_ACE_FLAG_OBJECT_INHERIT |
-					     SEC_ACE_FLAG_INHERIT_ONLY);
-			}
-
-			if (other_access.mask)
-			{
-				ace_list = g_renew(SEC_ACE, ace_list,
-						   num_acls + 1);
-				if (ace_list == NULL)
-				{
-					return 0;
-				}
-
-				make_sec_ace(&ace_list[num_acls++],
-					     global_sid_everyone,
-					     other_acl_type, other_access,
-					     SEC_ACE_FLAG_OBJECT_INHERIT |
-					     SEC_ACE_FLAG_INHERIT_ONLY);
-			}
-		}
-
-		if (num_acls)
-		{
-			psa = g_new(SEC_ACL, 1);
-			if (psa == NULL)
-			{
-				safe_free(ace_list);
-			}
-			if (!make_sec_acl(psa, 2, num_acls, ace_list))
-			{
-				DEBUG(0, ("get_nt_acl: Unable to malloc "
-					  "space for acl.\n"));
-				safe_free(ace_list);
-				safe_free(psa);
-				return 0;
-			}
-		}
-	}
-
-	(*ppdesc) = g_new(SEC_DESC, 1);
-
-	if ((*ppdesc) == NULL)
-	{
-		DEBUG(0, ("get_nt_acl: Unable to malloc space "
-			  "for security descriptor.\n"));
-		sec_desc_size = 0;
-		free_sec_acl(psa);
-		safe_free(psa);
-		return 0;
-	}
-
-	sec_desc_size = make_sec_desc((*ppdesc), 1,
-				      SEC_DESC_SELF_RELATIVE |
-				      (sbuf?SEC_DESC_DACL_PRESENT:0),
-				      sid_dup(&owner_sid),
-				      sid_dup(&group_sid), NULL, psa);
-
-	return sec_desc_size;
-}
-
-/****************************************************************************
- Map NT perms to UNIX.
-****************************************************************************/
-
-#define FILE_SPECIFIC_READ_BITS \
-	(FILE_READ_DATA|FILE_READ_EA|FILE_READ_ATTRIBUTES)
-#define FILE_SPECIFIC_WRITE_BITS \
-	(FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA|FILE_WRITE_ATTRIBUTES)
-#define FILE_SPECIFIC_EXECUTE_BITS (FILE_EXECUTE)
-
-#define PRINT_SPECIFIC_READ_BITS (PRINTER_READ)
-#define PRINT_SPECIFIC_WRITE_BITS (PRINTER_READ)
-#define PRINT_SPECIFIC_EXECUTE_BITS (PRINTER_ALL_ACCESS)
-
-static mode_t map_nt_perms(SEC_ACCESS sec_access, int type)
-{
-	uint32 write_bits;
-	uint32 read_bits;
-	uint32 execute_bits;
-	mode_t mode = 0;
-
-	write_bits = FILE_SPECIFIC_WRITE_BITS;
-	read_bits = FILE_SPECIFIC_READ_BITS;
-	execute_bits = FILE_SPECIFIC_EXECUTE_BITS;
-
-	switch (type)
-	{
-		case S_IRUSR:
-			if (sec_access.mask & GENERIC_ALL_ACCESS)
-				mode = S_IRUSR | S_IWUSR | S_IXUSR;
-			else
-			{
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_READ_ACCESS |
-					  read_bits)) ? S_IRUSR : 0;
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_WRITE_ACCESS |
-					  write_bits)) ? S_IWUSR : 0;
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_EXECUTE_ACCESS |
-					  execute_bits)) ? S_IXUSR : 0;
-			}
-			break;
-		case S_IRGRP:
-			if (sec_access.mask & GENERIC_ALL_ACCESS)
-				mode = S_IRGRP | S_IWGRP | S_IXGRP;
-			else
-			{
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_READ_ACCESS |
-					  read_bits)) ? S_IRGRP : 0;
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_WRITE_ACCESS |
-					  write_bits)) ? S_IWGRP : 0;
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_EXECUTE_ACCESS |
-					  execute_bits)) ? S_IXGRP : 0;
-			}
-			break;
-		case S_IROTH:
-			if (sec_access.mask & GENERIC_ALL_ACCESS)
-				mode = S_IROTH | S_IWOTH | S_IXOTH;
-			else
-			{
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_READ_ACCESS |
-					  read_bits)) ? S_IROTH : 0;
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_WRITE_ACCESS |
-					  write_bits)) ? S_IWOTH : 0;
-				mode |=
-					(sec_access.mask &
-					 (GENERIC_EXECUTE_ACCESS |
-					  execute_bits)) ? S_IXOTH : 0;
-			}
-			break;
-	}
-
-	return mode;
-}
-
-#ifndef WITH_SURS
-/****************************************************************************
- Validate a SID.
-****************************************************************************/
-static BOOL validate_unix_sid(DOM_SID *psid, uint32 *prid, DOM_SID *sd_sid)
-{
-	extern DOM_SID global_sam_sid;
-	DOM_SID sid;
-
-	if (!sd_sid)
-	{
-		DEBUG(5, ("validate_unix_sid: sid missing.\n"));
-		return False;
-	}
-
-	sid_copy(psid, sd_sid);
-	sid_copy(&sid, sd_sid);
-
-	if (!sid_split_rid(&sid, prid))
-	{
-		DEBUG(5, ("validate_unix_sid: cannot get RID from sid.\n"));
-		return False;
-	}
-
-	if (!sid_equal(&sid, &global_sam_sid))
-	{
-		DEBUG(5, ("validate_unix_sid: sid is not ours.\n"));
-		return False;
-	}
-
-	return True;
-}
-#endif
-
-/****************************************************************************
- Unpack a SEC_DESC into a owner, group and set of UNIX permissions.
-****************************************************************************/
-
-BOOL convertperms_sd_to_unix(SMB_STRUCT_STAT * psbuf, uid_t * puser,
-			     gid_t * pgrp, mode_t * pmode,
-			     uint32 security_info_sent, SEC_DESC * psd,
-			     BOOL is_directory)
-{
-	DOM_SID file_owner_sid;
-	DOM_SID file_grp_sid;
-	SEC_ACL *dacl = psd->dacl;
-	BOOL all_aces_are_inherit_only = (is_directory ? True : False);
-	int i;
-#ifdef WITH_SURS
-	SURS_POSIX_ID id;
-#else
-	DOM_SID owner_sid;
-	DOM_SID grp_sid;
-	uint32 owner_rid;
-	uint32 grp_rid;
-#endif
-
-	*pmode = 0;
-	*puser = (uid_t) - 1;
-	*pgrp = (gid_t) - 1;
-
-	if (security_info_sent == 0)
-	{
-		DEBUG(0, ("unpack_nt_permissions: "
-			  "no security info sent !\n"));
-		return False;
-	}
-
-	/*
-	 * Windows 2000 sends the owner and group SIDs as the logged in
-	 * user, not the connected user. But it still sends the file
-	 * owner SIDs on an ACL set. So we need to check for the file
-	 * owner and group SIDs as well as the owner SIDs. JRA.
-	 */
-
-	if (!create_file_sids(psbuf, &file_owner_sid, &file_grp_sid))
-	{
-		DEBUG(3, ("create_file_sids: uid or gid "
-			  "not mapped to SIDS\n"));
-		return 0;
-	}
-
-	/*
-	 * Don't immediately fail if the owner sid cannot be validated.
-	 * This may be a group chown only set.
-	 */
-
-	DEBUG(0, ("TODO: LsaLookupSids to find type of owner_sid\n"));
-
-#ifdef WITH_SURS
-	if (security_info_sent & OWNER_SECURITY_INFORMATION &&
-	    surs_sam_sid_to_unixid(psd->owner_sid, &id, False) &&
-	    id.type == SURS_POSIX_UID)
-	{
-		*puser = (uid_t) id.id;
-	}
-
-#else
-	if (!validate_unix_sid(&owner_sid, &owner_rid, psd->owner_sid))
-		DEBUG(3,
-		      ("unpack_nt_permissions: unable to validate owner sid.\n"));
-	else if (security_info_sent & OWNER_SECURITY_INFORMATION)
-		*puser = pdb_user_rid_to_uid(owner_rid);
-
-	if (security_info_sent & OWNER_SECURITY_INFORMATION)
-	{
-		*puser = pdb_user_rid_to_uid(owner_rid);
-	}
-
-#endif
-	/*
-	 * Don't immediately fail if the group sid cannot be validated.
-	 * This may be an owner chown only set.
-	 */
-
-#ifdef WITH_SURS
-	if (security_info_sent & GROUP_SECURITY_INFORMATION &&
-	    surs_sam_sid_to_unixid(psd->grp_sid, &id, False) &&
-	    (id.type == SURS_POSIX_GID))
-	{
-		*pgrp = (gid_t) id.id;
-	}
-#else
-	if (!validate_unix_sid(&grp_sid, &grp_rid, psd->grp_sid))
-		DEBUG(3,
-		      ("unpack_nt_permissions: unable to validate group sid.\n"));
-	else if (security_info_sent & GROUP_SECURITY_INFORMATION)
-		*pgrp = pdb_user_rid_to_gid(grp_rid);
-
-#endif
-	/*
-	 * If no DACL then this is a chown only security descriptor.
-	 */
-
-	if (!(security_info_sent & DACL_SECURITY_INFORMATION) || !dacl)
-	{
-		*pmode = 0;
-		return True;
-	}
-
-	/*
-	 * Now go through the DACL and ensure that
-	 * any owner/group sids match.
-	 */
-
-	for (i = 0; i < dacl->num_aces; i++)
-	{
-		DOM_SID ace_sid;
-		SEC_ACE *psa = &dacl->ace[i];
-
-		if ((psa->type != SEC_ACE_TYPE_ACCESS_ALLOWED) &&
-		    (psa->type != SEC_ACE_TYPE_ACCESS_DENIED))
-		{
-			DEBUG(3, ("unpack_nt_permissions: "
-				  "unable to set anything but an "
-				  "ALLOW or DENY ACE.\n"));
-			return False;
-		}
-
-		/*
-		 * Ignore or remove bits we don't care about on a directory ACE.
-		 */
-
-		if (is_directory)
-		{
-			if (psa->flags & SEC_ACE_FLAG_INHERIT_ONLY)
-			{
-				DEBUG(3, ("unpack_nt_permissions: "
-					  "ignoring inherit only ACE.\n"));
-				continue;
-			}
-
-			/*
-			 * At least one of the ACE entries wasn't inherit only.
-			 * Flag this so we know the returned mode is valid.
-			 */
-
-			all_aces_are_inherit_only = False;
-		}
-
-		/*
-		 * Windows 2000 sets these flags even on *file* ACE's.
-		 * This is wrong but we can ignore them for now.
-		 * Revisit this when we go to POSIX ACLs on directories.
-		 */
-
-		psa->flags &=
-			~(SEC_ACE_FLAG_OBJECT_INHERIT |
-			  SEC_ACE_FLAG_CONTAINER_INHERIT);
-
-		if (psa->flags != 0)
-		{
-			DEBUG(1,
-			      ("unpack_nt_permissions: unable to set ACE flags (%x).\n",
-			       (unsigned int)psa->flags));
-			return False;
-		}
-
-		/*
-		 * The security mask may be UNIX_ACCESS_NONE which
-		 * should map into no permissions (we overload the
-		 * WRITE_OWNER bit for this) or it should be one of
-		 * the ALL/EXECUTE/READ/WRITE bits. Arrange for this
-		 * to be so. Any other bits override the
-		 * UNIX_ACCESS_NONE bit.
-		 */
-
-		psa->info.mask &=
-			(GENERIC_ALL_ACCESS | GENERIC_EXECUTE_ACCESS |
-			 GENERIC_WRITE_ACCESS | GENERIC_READ_ACCESS |
-			 UNIX_ACCESS_NONE | FILE_ALL_ATTRIBUTES);
-
-		if (psa->info.mask != UNIX_ACCESS_NONE)
-			psa->info.mask &= ~UNIX_ACCESS_NONE;
-
-		sid_copy(&ace_sid, &psa->sid);
-
-		if (sid_equal(&ace_sid, &file_owner_sid))
-		{
-			/*
-			 * Map the desired permissions into owner perms.
-			 */
-
-			if (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
-				*pmode |= map_nt_perms(psa->info, S_IRUSR);
-			else
-				*pmode &= ~(map_nt_perms(psa->info, S_IRUSR));
-
-		}
-		else if (sid_equal(&ace_sid, &file_grp_sid))
-		{
-			/*
-			 * Map the desired permissions into group perms.
-			 */
-
-			if (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
-				*pmode |= map_nt_perms(psa->info, S_IRGRP);
-			else
-				*pmode &= ~(map_nt_perms(psa->info, S_IRGRP));
-
-		}
-		else if (sid_equal(&ace_sid, global_sid_everyone))
-		{
-			/*
-			 * Map the desired permissions into other perms.
-			 */
-
-			if (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
-				*pmode |= map_nt_perms(psa->info, S_IROTH);
-			else
-				*pmode &= ~(map_nt_perms(psa->info, S_IROTH));
-
-		}
-		else
-		{
-			DEBUG(0, ("unpack_nt_permissions: "
-				  "unknown SID used in ACL.\n"));
-			return False;
-		}
-	}
-
-	if (is_directory && all_aces_are_inherit_only)
-	{
-		/*
-		 * Windows 2000 is doing one of these weird 'inherit acl'
-		 * traverses to conserve NTFS ACL resources. Just pretend
-		 * there was no DACL sent. JRA.
-		 */
-
-		DEBUG(10, ("unpack_nt_permissions: "
-			   "Win2k inherit acl traverse. "
-			   "Ignoring DACL.\n"));
-		free_sec_acl(psd->dacl);
-		safe_free(psd->dacl);
-		psd->dacl = NULL;
-	}
-
-	return True;
-}