#include "includes.h"
extern struct current_user current_user;
-extern struct generic_mapping file_generic_mapping;
+extern const struct generic_mapping file_generic_mapping;
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_ACLS
enum ace_owner owner_type;
enum ace_attribute attr;
posix_id unix_ug;
- BOOL inherited;
+ bool inherited;
} canon_ace;
#define ALL_ACE_PERMS (S_IRUSR|S_IWUSR|S_IXUSR)
struct pai_entry {
struct pai_entry *next, *prev;
enum ace_owner owner_type;
- posix_id unix_ug;
+ posix_id unix_ug;
};
-
+
struct pai_val {
- BOOL pai_protected;
+ bool pai_protected;
unsigned int num_entries;
struct pai_entry *entry_list;
unsigned int num_def_entries;
Create the on-disk format. Caller must free.
************************************************************************/
-static char *create_pai_buf(canon_ace *file_ace_list, canon_ace *dir_ace_list, BOOL pai_protected, size_t *store_size)
+static char *create_pai_buf(canon_ace *file_ace_list, canon_ace *dir_ace_list, bool pai_protected, size_t *store_size)
{
char *pai_buf = NULL;
canon_ace *ace_list = NULL;
************************************************************************/
static void store_inheritance_attributes(files_struct *fsp, canon_ace *file_ace_list,
- canon_ace *dir_ace_list, BOOL pai_protected)
+ canon_ace *dir_ace_list, bool pai_protected)
{
int ret;
size_t store_size;
Was this ACL protected ?
************************************************************************/
-static BOOL get_protected_flag(struct pai_val *pal)
+static bool get_protected_flag(struct pai_val *pal)
{
if (!pal)
return False;
Was this ACE inherited ?
************************************************************************/
-static BOOL get_inherited_flag(struct pai_val *pal, canon_ace *ace_entry, BOOL default_ace)
+static bool get_inherited_flag(struct pai_val *pal, canon_ace *ace_entry, bool default_ace)
{
struct pai_entry *paie;
Ensure an attribute just read is valid.
************************************************************************/
-static BOOL check_pai_ok(char *pai_buf, size_t pai_buf_data_size)
+static bool check_pai_ok(char *pai_buf, size_t pai_buf_data_size)
{
uint16 num_entries;
uint16 num_def_entries;
Is the identity in two ACEs equal ? Check both SID and uid/gid.
****************************************************************************/
-static BOOL identity_in_ace_equal(canon_ace *ace1, canon_ace *ace2)
+static bool identity_in_ace_equal(canon_ace *ace1, canon_ace *ace2)
{
if (sid_equal(&ace1->trustee, &ace2->trustee)) {
return True;
Check if we need to return NT4.x compatible ACL entries.
****************************************************************************/
-static BOOL nt4_compatible_acls(void)
+static bool nt4_compatible_acls(void)
{
int compat = lp_acl_compatibility();
static SEC_ACCESS map_canon_ace_perms(int snum,
int *pacl_type,
mode_t perms,
- BOOL directory_ace)
+ bool directory_ace)
{
SEC_ACCESS sa;
uint32 nt_mask = 0;
Ensure the enforced permissions for this share apply.
****************************************************************************/
-static void apply_default_perms(files_struct *fsp, canon_ace *pace, mode_t type)
+static void apply_default_perms(const files_struct *fsp, canon_ace *pace, mode_t type)
{
int snum = SNUM(fsp->conn);
mode_t and_bits = (mode_t)0;
expensive and will need optimisation. A *lot* of optimisation :-). JRA.
****************************************************************************/
-static BOOL uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
+static bool uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
{
- fstring u_name;
+ const char *u_name = NULL;
/* "Everyone" always matches every uid. */
if (uid_ace->unix_ug.uid == current_user.ut.uid && group_ace->unix_ug.gid == current_user.ut.gid)
return True;
- fstrcpy(u_name, uidtoname(uid_ace->unix_ug.uid));
+ /* u_name talloc'ed off tos. */
+ u_name = uidtoname(uid_ace->unix_ug.uid);
+ if (!u_name) {
+ return False;
+ }
return user_in_group_sid(u_name, &group_ace->trustee);
}
type.
****************************************************************************/
-static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
- files_struct *fsp,
+static bool ensure_canon_entry_valid(canon_ace **pp_ace,
+ const files_struct *fsp,
const DOM_SID *pfile_owner_sid,
const DOM_SID *pfile_grp_sid,
SMB_STRUCT_STAT *pst,
- BOOL setting_acl)
+ bool setting_acl)
{
canon_ace *pace;
- BOOL got_user = False;
- BOOL got_grp = False;
- BOOL got_other = False;
+ bool got_user = False;
+ bool got_grp = False;
+ bool got_other = False;
canon_ace *pace_other = NULL;
for (pace = *pp_ace; pace; pace = pace->next) {
/* See if the owning user is in any of the other groups in
the ACE. If so, OR in the permissions from that group. */
- BOOL group_matched = False;
+ bool group_matched = False;
canon_ace *pace_iter;
for (pace_iter = *pp_ace; pace_iter; pace_iter = pace_iter->next) {
static void check_owning_objs(canon_ace *ace, DOM_SID *pfile_owner_sid, DOM_SID *pfile_grp_sid)
{
- BOOL got_user_obj, got_group_obj;
+ bool got_user_obj, got_group_obj;
canon_ace *current_ace;
int i, entries;
Unpack a SEC_DESC into two canonical ace lists.
****************************************************************************/
-static BOOL create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
+static bool create_canon_ace_lists(files_struct *fsp, SMB_STRUCT_STAT *pst,
DOM_SID *pfile_owner_sid,
DOM_SID *pfile_grp_sid,
canon_ace **ppfile_ace, canon_ace **ppdir_ace,
SEC_ACL *dacl)
{
- BOOL all_aces_are_inherit_only = (fsp->is_directory ? True : False);
+ bool all_aces_are_inherit_only = (fsp->is_directory ? True : False);
canon_ace *file_ace = NULL;
canon_ace *dir_ace = NULL;
canon_ace *current_ace = NULL;
- BOOL got_dir_allow = False;
- BOOL got_file_allow = False;
+ bool got_dir_allow = False;
+ bool got_file_allow = False;
int i, j;
*ppfile_ace = NULL;
no user/group/world entries.
****************************************************************************/
-static mode_t create_default_mode(files_struct *fsp, BOOL interitable_mode)
+static mode_t create_default_mode(files_struct *fsp, bool interitable_mode)
{
int snum = SNUM(fsp->conn);
mode_t and_bits = (mode_t)0;
succeeding.
****************************************************************************/
-static BOOL unpack_canon_ace(files_struct *fsp,
+static bool unpack_canon_ace(files_struct *fsp,
SMB_STRUCT_STAT *pst,
DOM_SID *pfile_owner_sid,
DOM_SID *pfile_grp_sid,
Create a linked list of canonical ACE entries.
****************************************************************************/
-static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_STRUCT_STAT *psbuf,
+static canon_ace *canonicalise_acl( const files_struct *fsp, SMB_ACL_T posix_acl, SMB_STRUCT_STAT *psbuf,
const DOM_SID *powner, const DOM_SID *pgroup, struct pai_val *pal, SMB_ACL_TYPE_T the_acl_type)
{
connection_struct *conn = fsp->conn;
Check if the current user group list contains a given group.
****************************************************************************/
-static BOOL current_user_in_group(gid_t gid)
+static bool current_user_in_group(gid_t gid)
{
int i;
and 'dos filemode'
****************************************************************************/
-static BOOL acl_group_override(connection_struct *conn, gid_t prim_gid)
+static bool acl_group_override(connection_struct *conn, gid_t prim_gid)
{
if ( (errno == EACCES || errno == EPERM)
&& (lp_acl_group_control(SNUM(conn)) || lp_dos_filemode(SNUM(conn)))
Attempt to apply an ACL to a file or directory.
****************************************************************************/
-static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL default_ace, gid_t prim_gid, BOOL *pacl_set_support)
+static bool set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, bool default_ace, gid_t prim_gid, bool *pacl_set_support)
{
connection_struct *conn = fsp->conn;
- BOOL ret = False;
+ bool ret = False;
SMB_ACL_T the_acl = SMB_VFS_SYS_ACL_INIT(conn, (int)count_canon_ace_list(the_ace) + 1);
canon_ace *p_ace;
int i;
SMB_ACL_ENTRY_T mask_entry;
- BOOL got_mask_entry = False;
+ bool got_mask_entry = False;
SMB_ACL_PERMSET_T mask_permset;
SMB_ACL_TYPE_T the_acl_type = (default_ace ? SMB_ACL_TYPE_DEFAULT : SMB_ACL_TYPE_ACCESS);
- BOOL needs_mask = False;
+ bool needs_mask = False;
mode_t mask_perms = 0;
#if defined(POSIX_ACL_NEEDS_MASK)
#define MAP_PERM(p,mask,result) (((p) & (mask)) ? (result) : 0 )
-static BOOL convert_canon_ace_to_posix_perms( files_struct *fsp, canon_ace *file_ace_list, mode_t *posix_perms)
+static bool convert_canon_ace_to_posix_perms( files_struct *fsp, canon_ace *file_ace_list, mode_t *posix_perms)
{
int snum = SNUM(fsp->conn);
size_t ace_count = count_canon_ace_list(file_ace_list);
for (j = i+1; j < num_aces; j++) {
uint32 i_flags_ni = (nt_ace_list[i].flags & ~SEC_ACE_FLAG_INHERITED_ACE);
uint32 j_flags_ni = (nt_ace_list[j].flags & ~SEC_ACE_FLAG_INHERITED_ACE);
- BOOL i_inh = (nt_ace_list[i].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
- BOOL j_inh = (nt_ace_list[j].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
+ bool i_inh = (nt_ace_list[i].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
+ bool j_inh = (nt_ace_list[j].flags & SEC_ACE_FLAG_INHERITED_ACE) ? True : False;
/* We know the lower number ACE's are file entries. */
if ((nt_ace_list[i].type == nt_ace_list[j].type) &&
}
if (num_aces) {
- if((psa = make_sec_acl( main_loop_talloc_get(), NT4_ACL_REVISION, num_aces, nt_ace_list)) == NULL) {
+ if((psa = make_sec_acl( talloc_tos(), NT4_ACL_REVISION, num_aces, nt_ace_list)) == NULL) {
DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n"));
goto done;
}
}
} /* security_info & DACL_SECURITY_INFORMATION */
- psd = make_standard_sec_desc( main_loop_talloc_get(),
+ psd = make_standard_sec_desc( talloc_tos(),
(security_info & OWNER_SECURITY_INFORMATION) ? &owner_sid : NULL,
(security_info & GROUP_SECURITY_INFORMATION) ? &group_sid : NULL,
psa,
/* Case (2) / (3) */
if (lp_enable_privileges()) {
- BOOL has_take_ownership_priv = user_has_privileges(current_user.nt_user_token,
+ bool has_take_ownership_priv = user_has_privileges(current_user.nt_user_token,
&se_take_ownership);
- BOOL has_restore_priv = user_has_privileges(current_user.nt_user_token,
+ bool has_restore_priv = user_has_privileges(current_user.nt_user_token,
&se_restore);
/* Case (2) */
{
mode_t perms;
SEC_ACCESS acc;
- int acl_type;
+ int nt_acl_type;
DOM_SID trustee;
switch (ugw) {
return NT_STATUS_INVALID_PARAMETER;
}
acc = map_canon_ace_perms(SNUM(fsp->conn),
- &acl_type,
+ &nt_acl_type,
perms,
fsp->is_directory);
init_sec_ace(se,
&trustee,
- acl_type,
+ nt_acl_type,
acc,
0);
return NT_STATUS_OK;
DOM_SID file_grp_sid;
canon_ace *file_ace_list = NULL;
canon_ace *dir_ace_list = NULL;
- BOOL acl_perms = False;
+ bool acl_perms = False;
mode_t orig_mode = (mode_t)0;
NTSTATUS status;
if((security_info_sent & DACL_SECURITY_INFORMATION) && (psd->dacl != NULL)) {
- BOOL acl_set_support = False;
- BOOL ret = False;
+ bool acl_set_support = False;
+ bool ret = False;
/*
* Try using the POSIX ACL set first. Fall back to chmod if
Check for an existing default POSIX ACL on a directory.
****************************************************************************/
-BOOL directory_has_default_acl(connection_struct *conn, const char *fname)
+bool directory_has_default_acl(connection_struct *conn, const char *fname)
{
SMB_ACL_T def_acl = SMB_VFS_SYS_ACL_GET_FILE( conn, fname, SMB_ACL_TYPE_DEFAULT);
- BOOL has_acl = False;
+ bool has_acl = False;
SMB_ACL_ENTRY_T entry;
if (def_acl != NULL && (SMB_VFS_SYS_ACL_GET_ENTRY(conn, def_acl, SMB_ACL_FIRST_ENTRY, &entry) == 1)) {
Map from wire type to permset.
****************************************************************************/
-static BOOL unix_ex_wire_to_permset(connection_struct *conn, unsigned char wire_perm, SMB_ACL_PERMSET_T *p_permset)
+static bool unix_ex_wire_to_permset(connection_struct *conn, unsigned char wire_perm, SMB_ACL_PERMSET_T *p_permset)
{
if (wire_perm & ~(SMB_POSIX_ACL_READ|SMB_POSIX_ACL_WRITE|SMB_POSIX_ACL_EXECUTE)) {
return False;
Map from wire type to tagtype.
****************************************************************************/
-static BOOL unix_ex_wire_to_tagtype(unsigned char wire_tt, SMB_ACL_TAG_T *p_tt)
+static bool unix_ex_wire_to_tagtype(unsigned char wire_tt, SMB_ACL_TAG_T *p_tt)
{
switch (wire_tt) {
case SMB_POSIX_ACL_USER_OBJ:
on the directory.
****************************************************************************/
-BOOL set_unix_posix_default_acl(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf,
+bool set_unix_posix_default_acl(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf,
uint16 num_def_acls, const char *pdata)
{
SMB_ACL_T def_acl = NULL;
FIXME ! How does the share mask/mode fit into this.... ?
****************************************************************************/
-static BOOL remove_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname)
+static bool remove_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname)
{
SMB_ACL_T file_acl = NULL;
int entry_id = SMB_ACL_FIRST_ENTRY;
SMB_ACL_ENTRY_T entry;
- BOOL ret = False;
+ bool ret = False;
/* Create a new ACL with only 3 entries, u/g/w. */
SMB_ACL_T new_file_acl = SMB_VFS_SYS_ACL_INIT(conn, 3);
SMB_ACL_ENTRY_T user_ent = NULL;
except SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, SMB_ACL_OTHER.
****************************************************************************/
-BOOL set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname, uint16 num_acls, const char *pdata)
+bool set_unix_posix_acl(connection_struct *conn, files_struct *fsp, const char *fname, uint16 num_acls, const char *pdata)
{
SMB_ACL_T file_acl = NULL;
}
/****************************************************************************
- Check for POSIX group ACLs. If none use stat entry.
- Return -1 if no match, 0 if match and denied, 1 if match and allowed.
+ Helper function that gets a security descriptor by connection and
+ file name.
+ NOTE: This is transitional, in the sense that SMB_VFS_GET_NT_ACL really
+ should *not* get a files_struct pointer but a connection_struct ptr
+ (automatic by the vfs handle) and the file name and _use_ that!
****************************************************************************/
-
-static int check_posix_acl_group_access(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf, uint32 access_mask)
+static NTSTATUS conn_get_nt_acl(TALLOC_CTX *mem_ctx,
+ struct connection_struct *conn,
+ const char *fname,
+ SMB_STRUCT_STAT *psbuf,
+ struct security_descriptor **psd)
{
- SMB_ACL_T posix_acl = NULL;
- int entry_id = SMB_ACL_FIRST_ENTRY;
- SMB_ACL_ENTRY_T entry;
- int i;
- BOOL seen_mask = False;
- BOOL seen_owning_group = False;
- int ret = -1;
- gid_t cu_gid;
-
- DEBUG(10,("check_posix_acl_group_access: requesting 0x%x on file %s\n",
- (unsigned int)access_mask, fname ));
-
- if ((posix_acl = SMB_VFS_SYS_ACL_GET_FILE(conn, fname, SMB_ACL_TYPE_ACCESS)) == NULL) {
- goto check_stat;
- }
-
- /* First ensure the group mask allows group access. */
- /* Also check any user entries (these take preference over group). */
-
- while ( SMB_VFS_SYS_ACL_GET_ENTRY(conn, posix_acl, entry_id, &entry) == 1) {
- SMB_ACL_TAG_T tagtype;
- SMB_ACL_PERMSET_T permset;
- int have_write = -1;
- int have_read = -1;
-
- /* get_next... */
- if (entry_id == SMB_ACL_FIRST_ENTRY)
- entry_id = SMB_ACL_NEXT_ENTRY;
-
- if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1) {
- goto check_stat;
- }
-
- if (SMB_VFS_SYS_ACL_GET_PERMSET(conn, entry, &permset) == -1) {
- goto check_stat;
- }
-
- have_read = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_READ);
- if (have_read == -1) {
- goto check_stat;
- }
+ NTSTATUS status;
+ struct files_struct *fsp = NULL;
+ struct security_descriptor *secdesc = NULL;
+ size_t secdesc_size;
- have_write = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_WRITE);
- if (have_write == -1) {
- goto check_stat;
+ if (!VALID_STAT(*psbuf)) {
+ if (SMB_VFS_STAT(conn, fname, psbuf) != 0) {
+ return map_nt_error_from_unix(errno);
}
+ }
- /*
- * Solaris returns 2 for this if write is available.
- * canonicalize to 0 or 1.
- */
- have_write = (have_write ? 1 : 0);
- have_read = (have_read ? 1 : 0);
+ /* fake a files_struct ptr: */
- switch(tagtype) {
- case SMB_ACL_MASK:
- seen_mask = True;
- switch (access_mask) {
- case FILE_READ_DATA:
- if (!have_read) {
- ret = -1;
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "refusing read due to mask.\n", fname));
- goto done;
- }
- break;
- case FILE_WRITE_DATA:
- if (!have_write) {
- ret = -1;
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "refusing write due to mask.\n", fname));
- goto done;
- }
- break;
- default: /* FILE_READ_DATA|FILE_WRITE_DATA */
- if (!have_write || !have_read) {
- ret = -1;
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "refusing read/write due to mask.\n", fname));
- goto done;
- }
- break;
- }
- break;
- case SMB_ACL_USER:
- {
- /* Check against current_user.ut.uid. */
- uid_t *puid = (uid_t *)SMB_VFS_SYS_ACL_GET_QUALIFIER(conn, entry);
- if (puid == NULL) {
- goto check_stat;
- }
- if (current_user.ut.uid == *puid) {
- /* We have a uid match but we must ensure we have seen the acl mask. */
- switch (access_mask) {
- case FILE_READ_DATA:
- ret = have_read;
- break;
- case FILE_WRITE_DATA:
- ret = have_write;
- break;
- default: /* FILE_READ_DATA|FILE_WRITE_DATA */
- ret = (have_write & have_read);
- break;
- }
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "match on user %u -> %s.\n",
- fname, (unsigned int)*puid,
- ret ? "can access" : "cannot access"));
- if (seen_mask) {
- goto done;
- }
- }
- break;
- }
- default:
- continue;
- }
+ status = open_file_stat(conn, NULL, fname, psbuf, &fsp);
+ /* Perhaps it is a directory */
+ if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
+ status = open_directory(conn, NULL, fname, psbuf,
+ READ_CONTROL_ACCESS,
+ FILE_SHARE_READ|FILE_SHARE_WRITE,
+ FILE_OPEN,
+ 0,
+ FILE_ATTRIBUTE_DIRECTORY,
+ NULL, &fsp);
}
-
- /* If ret is anything other than -1 we matched on a user entry. */
- if (ret != -1) {
- goto done;
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("Unable to open file %s: %s\n", fname,
+ nt_errstr(status)));
+ return status;
}
- /* Next check all group entries. */
- entry_id = SMB_ACL_FIRST_ENTRY;
- while ( SMB_VFS_SYS_ACL_GET_ENTRY(conn, posix_acl, entry_id, &entry) == 1) {
- SMB_ACL_TAG_T tagtype;
- SMB_ACL_PERMSET_T permset;
- int have_write = -1;
- int have_read = -1;
-
- /* get_next... */
- if (entry_id == SMB_ACL_FIRST_ENTRY)
- entry_id = SMB_ACL_NEXT_ENTRY;
-
- if (SMB_VFS_SYS_ACL_GET_TAG_TYPE(conn, entry, &tagtype) == -1) {
- goto check_stat;
- }
-
- if (SMB_VFS_SYS_ACL_GET_PERMSET(conn, entry, &permset) == -1) {
- goto check_stat;
- }
-
- have_read = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_READ);
- if (have_read == -1) {
- goto check_stat;
- }
-
- have_write = SMB_VFS_SYS_ACL_GET_PERM(conn, permset, SMB_ACL_WRITE);
- if (have_write == -1) {
- goto check_stat;
- }
-
- /*
- * Solaris returns 2 for this if write is available.
- * canonicalize to 0 or 1.
- */
- have_write = (have_write ? 1 : 0);
- have_read = (have_read ? 1 : 0);
-
- switch(tagtype) {
- case SMB_ACL_GROUP:
- case SMB_ACL_GROUP_OBJ:
- {
- gid_t *pgid = NULL;
-
- if (tagtype == SMB_ACL_GROUP) {
- pgid = (gid_t *)SMB_VFS_SYS_ACL_GET_QUALIFIER(conn, entry);
- } else {
- seen_owning_group = True;
- pgid = &psbuf->st_gid;
- }
- if (pgid == NULL) {
- goto check_stat;
- }
-
- /*
- * Does it match the current effective group
- * or supplementary groups ?
- */
- for (cu_gid = get_current_user_gid_first(&i); cu_gid != (gid_t)-1;
- cu_gid = get_current_user_gid_next(&i)) {
- if (cu_gid == *pgid) {
- switch (access_mask) {
- case FILE_READ_DATA:
- ret = have_read;
- break;
- case FILE_WRITE_DATA:
- ret = have_write;
- break;
- default: /* FILE_READ_DATA|FILE_WRITE_DATA */
- ret = (have_write & have_read);
- break;
- }
-
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "match on group %u -> can access.\n",
- fname, (unsigned int)cu_gid ));
-
- /* If we don't have access permission this entry doesn't
- terminate the enumeration of the entries. */
- if (ret) {
- goto done;
- }
- /* But does terminate the group iteration. */
- break;
- }
- }
- break;
- }
- default:
- continue;
- }
+ secdesc_size = SMB_VFS_GET_NT_ACL(fsp, fname,
+ (OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION |
+ DACL_SECURITY_INFORMATION),
+ &secdesc);
+ if (secdesc_size == 0) {
+ DEBUG(5, ("Unable to get NT ACL for file %s\n", fname));
+ return NT_STATUS_ACCESS_DENIED;
}
- /* If ret is -1 here we didn't match on the user entry or
- supplemental group entries. */
-
- DEBUG(10,("check_posix_acl_group_access: ret = %d before check_stat:\n", ret));
-
- check_stat:
-
- /*
- * We only check the S_I[RW]GRP permissions if we haven't already
- * seen an owning group SMB_ACL_GROUP_OBJ ace entry. If there is an
- * SMB_ACL_GROUP_OBJ ace entry then the group bits in st_gid are
- * the same as the SMB_ACL_MASK bits, not the SMB_ACL_GROUP_OBJ
- * bits. Thanks to Marc Cousin <mcousin@sigma.fr> for pointing
- * this out. JRA.
- */
-
- if (!seen_owning_group) {
- /* Do we match on the owning group entry ? */
- /*
- * Does it match the current effective group
- * or supplementary groups ?
- */
- for (cu_gid = get_current_user_gid_first(&i); cu_gid != (gid_t)-1;
- cu_gid = get_current_user_gid_next(&i)) {
- if (cu_gid == psbuf->st_gid) {
- switch (access_mask) {
- case FILE_READ_DATA:
- ret = (psbuf->st_mode & S_IRGRP) ? 1 : 0;
- break;
- case FILE_WRITE_DATA:
- ret = (psbuf->st_mode & S_IWGRP) ? 1 : 0;
- break;
- default: /* FILE_READ_DATA|FILE_WRITE_DATA */
- if ((psbuf->st_mode & (S_IWGRP|S_IRGRP)) == (S_IWGRP|S_IRGRP)) {
- ret = 1;
- } else {
- ret = 0;
- }
- break;
- }
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "match on owning group %u -> %s.\n",
- fname, (unsigned int)psbuf->st_gid,
- ret ? "can access" : "cannot access"));
- break;
- }
- }
-
- if (cu_gid == (gid_t)-1) {
- DEBUG(10,("check_posix_acl_group_access: file %s "
- "failed to match on user or group in token (ret = %d).\n",
- fname, ret ));
- }
- }
+ *psd = talloc_move(mem_ctx, &secdesc);
+ close_file(fsp, NORMAL_CLOSE);
+ return NT_STATUS_OK;
+}
- done:
+static bool can_access_file_acl(struct connection_struct *conn,
+ const char * fname, SMB_STRUCT_STAT *psbuf,
+ uint32_t access_mask)
+{
+ bool result;
+ NTSTATUS status;
+ uint32_t access_granted;
+ struct security_descriptor *secdesc = NULL;
- if (posix_acl) {
- SMB_VFS_SYS_ACL_FREE_ACL(conn, posix_acl);
+ status = conn_get_nt_acl(talloc_tos(), conn, fname, psbuf, &secdesc);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(5, ("Could not get acl: %s\n", nt_errstr(status)));
+ return false;
}
- DEBUG(10,("check_posix_acl_group_access: file %s returning (ret = %d).\n", fname, ret ));
- return ret;
+ result = se_access_check(secdesc, current_user.nt_user_token,
+ access_mask, &access_granted, &status);
+ TALLOC_FREE(secdesc);
+ return result;
}
/****************************************************************************
this to successfully return ACCESS_DENIED on a file open for delete access.
****************************************************************************/
-BOOL can_delete_file_in_directory(connection_struct *conn, const char *fname)
+bool can_delete_file_in_directory(connection_struct *conn, const char *fname)
{
- SMB_STRUCT_STAT sbuf;
- pstring dname;
- int ret;
+ SMB_STRUCT_STAT sbuf;
+ TALLOC_CTX *ctx = talloc_tos();
+ char *dname = NULL;
if (!CAN_WRITE(conn)) {
return False;
}
/* Get the parent directory permission mask and owners. */
- pstrcpy(dname, parent_dirname(fname));
+ if (!parent_dirname_talloc(ctx,
+ fname,
+ &dname,
+ NULL)) {
+ return False;
+ }
if(SMB_VFS_STAT(conn, dname, &sbuf) != 0) {
return False;
}
+
+ /* fast paths first */
+
if (!S_ISDIR(sbuf.st_mode)) {
return False;
}
#ifdef S_ISVTX
/* sticky bit means delete only by owner or root. */
if (sbuf.st_mode & S_ISVTX) {
- SMB_STRUCT_STAT sbuf_file;
+ SMB_STRUCT_STAT sbuf_file;
if(SMB_VFS_STAT(conn, fname, &sbuf_file) != 0) {
if (errno == ENOENT) {
/* If the file doesn't already exist then
}
#endif
- /* Check group or explicit user acl entry write access. */
- ret = check_posix_acl_group_access(conn, dname, &sbuf, FILE_WRITE_DATA);
- if (ret == 0 || ret == 1) {
- return ret ? True : False;
- }
+ /* now for ACL checks */
- /* Finally check other write access. */
- return (sbuf.st_mode & S_IWOTH) ? True : False;
+ return can_access_file(conn, dname, &sbuf, FILE_WRITE_DATA);
}
/****************************************************************************
Note this doesn't take into account share write permissions.
****************************************************************************/
-BOOL can_access_file(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf, uint32 access_mask)
+bool can_access_file(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf, uint32 access_mask)
{
- int ret;
-
if (!(access_mask & (FILE_READ_DATA|FILE_WRITE_DATA))) {
return False;
}
access_mask &= (FILE_READ_DATA|FILE_WRITE_DATA);
+ /* some fast paths first */
+
DEBUG(10,("can_access_file: requesting 0x%x on file %s\n",
(unsigned int)access_mask, fname ));
}
}
- /* Check group or explicit user acl entry access. */
- ret = check_posix_acl_group_access(conn, fname, psbuf, access_mask);
- if (ret == 0 || ret == 1) {
- return ret ? True : False;
- }
-
- /* Finally check other access. */
- switch (access_mask) {
- case FILE_READ_DATA:
- return (psbuf->st_mode & S_IROTH) ? True : False;
-
- case FILE_WRITE_DATA:
- return (psbuf->st_mode & S_IWOTH) ? True : False;
-
- default: /* FILE_READ_DATA|FILE_WRITE_DATA */
+ /* now for ACL checks */
- if ((psbuf->st_mode & (S_IWOTH|S_IROTH)) == (S_IWOTH|S_IROTH)) {
- return True;
- }
- }
- return False;
+ return can_access_file_acl(conn, fname, psbuf, access_mask);
}
/****************************************************************************
Note this doesn't take into account share write permissions.
****************************************************************************/
-BOOL can_write_to_file(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf)
+bool can_write_to_file(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf)
{
return can_access_file(conn, fname, psbuf, FILE_WRITE_DATA);
}
descriptor via TALLOC_FREE(). This is designed for dealing with
user space access checks in smbd outside of the VFS. For example,
checking access rights in OpenEventlog().
-
+
Assume we are dealing with files (for now)
********************************************************************/
-SEC_DESC* get_nt_acl_no_snum( TALLOC_CTX *ctx, const char *fname)
+SEC_DESC *get_nt_acl_no_snum( TALLOC_CTX *ctx, const char *fname)
{
SEC_DESC *psd, *ret_sd;
connection_struct conn;
files_struct finfo;
struct fd_handle fh;
- pstring path;
- pstring filename;
-
+
ZERO_STRUCT( conn );
-
+
if ( !(conn.mem_ctx = talloc_init( "novfs_get_nt_acl" )) ) {
DEBUG(0,("get_nt_acl_no_snum: talloc() failed!\n"));
return NULL;
}
conn.params->service = -1;
-
- pstrcpy( path, "/" );
- set_conn_connectpath(&conn, path);
-
+
+ set_conn_connectpath(&conn, "/");
+
if (!smbd_vfs_init(&conn)) {
DEBUG(0,("get_nt_acl_no_snum: Unable to create a fake connection struct!\n"));
conn_free_internal( &conn );
return NULL;
}
-
+
ZERO_STRUCT( finfo );
ZERO_STRUCT( fh );
-
+
finfo.fnum = -1;
finfo.conn = &conn;
finfo.fh = &fh;
finfo.fh->fd = -1;
- pstrcpy( filename, fname );
- finfo.fsp_name = filename;
-
+ finfo.fsp_name = CONST_DISCARD(char *,fname);
+
if (get_nt_acl( &finfo, DACL_SECURITY_INFORMATION, &psd ) == 0) {
DEBUG(0,("get_nt_acl_no_snum: get_nt_acl returned zero.\n"));
conn_free_internal( &conn );
return NULL;
}
-
+
ret_sd = dup_sec_desc( ctx, psd );
-
+
conn_free_internal( &conn );
-
+
return ret_sd;
}
git.samba.org / obnox / samba / samba-obnox.git / blobdiff