#include "includes.h"
enum ace_owner {UID_ACE, GID_ACE, WORLD_ACE};
enum ace_attribute {ALLOW_ACE, DENY_ACE};
typedef union posix_id {
uid_t uid;
gid_t gid;
int world;
} posix_id;
typedef struct canon_ace {
struct canon_ace *next, *prev;
SMB_ACL_TAG_T type;
mode_t perms;
DOM_SID trustee;
enum ace_owner owner_type;
enum ace_attribute attr;
posix_id unix_ug;
} canon_ace;
#define ALL_ACE_PERMS (S_IRUSR|S_IWUSR|S_IXUSR)
static size_t count_canon_ace_list( canon_ace *list_head )
{
size_t count = 0;
canon_ace *ace;
for (ace = list_head; ace; ace = ace->next)
count++;
return count;
}
static void free_canon_ace_list( canon_ace *list_head )
{
while (list_head) {
canon_ace *old_head = list_head;
DLIST_REMOVE(list_head, list_head);
SAFE_FREE(old_head);
}
}
static canon_ace *dup_canon_ace( canon_ace *src_ace)
{
canon_ace *dst_ace = (canon_ace *)malloc(sizeof(canon_ace));
if (dst_ace == NULL)
return NULL;
*dst_ace = *src_ace;
dst_ace->prev = dst_ace->next = NULL;
return dst_ace;
}
static void print_canon_ace(canon_ace *pace, int num)
{
fstring str;
dbgtext( "canon_ace index %d. Type = %s ", num, pace->attr == ALLOW_ACE ? "allow" : "deny" );
dbgtext( "SID = %s ", sid_to_string( str, &pace->trustee));
if (pace->owner_type == UID_ACE) {
char *u_name = uidtoname(pace->unix_ug.uid);
dbgtext( "uid %u (%s) ", (unsigned int)pace->unix_ug.uid, u_name);
} else if (pace->owner_type == GID_ACE) {
char *g_name = gidtoname(pace->unix_ug.gid);
dbgtext( "gid %u (%s) ", (unsigned int)pace->unix_ug.gid, g_name);
} else
dbgtext( "other ");
switch (pace->type) {
case SMB_ACL_USER:
dbgtext( "SMB_ACL_USER ");
break;
case SMB_ACL_USER_OBJ:
dbgtext( "SMB_ACL_USER_OBJ ");
break;
case SMB_ACL_GROUP:
dbgtext( "SMB_ACL_GROUP ");
break;
case SMB_ACL_GROUP_OBJ:
dbgtext( "SMB_ACL_GROUP_OBJ ");
break;
case SMB_ACL_OTHER:
dbgtext( "SMB_ACL_OTHER ");
break;
}
dbgtext( "perms ");
dbgtext( "%c", pace->perms & S_IRUSR ? 'r' : '-');
dbgtext( "%c", pace->perms & S_IWUSR ? 'w' : '-');
dbgtext( "%c\n", pace->perms & S_IXUSR ? 'x' : '-');
}
static void print_canon_ace_list(const char *name, canon_ace *ace_list)
{
int count = 0;
if( DEBUGLVL( 10 )) {
dbgtext( "print_canon_ace_list: %s\n", name );
for (;ace_list; ace_list = ace_list->next, count++)
print_canon_ace(ace_list, count );
}
}
static mode_t convert_permset_to_mode_t(SMB_ACL_PERMSET_T permset)
{
mode_t ret = 0;
ret |= (sys_acl_get_perm(permset, SMB_ACL_READ) ? S_IRUSR : 0);
ret |= (sys_acl_get_perm(permset, SMB_ACL_WRITE) ? S_IWUSR : 0);
ret |= (sys_acl_get_perm(permset, SMB_ACL_EXECUTE) ? S_IXUSR : 0);
return ret;
}
static mode_t unix_perms_to_acl_perms(mode_t mode, int r_mask, int w_mask, int x_mask)
{
mode_t ret = 0;
if (mode & r_mask)
ret |= S_IRUSR;
if (mode & w_mask)
ret |= S_IWUSR;
if (mode & x_mask)
ret |= S_IXUSR;
return ret;
}
static int map_acl_perms_to_permset(mode_t mode, SMB_ACL_PERMSET_T *p_permset)
{
if (sys_acl_clear_perms(*p_permset) == -1)
return -1;
if (mode & S_IRUSR) {
if (sys_acl_add_perm(*p_permset, SMB_ACL_READ) == -1)
return -1;
}
if (mode & S_IWUSR) {
if (sys_acl_add_perm(*p_permset, SMB_ACL_WRITE) == -1)
return -1;
}
if (mode & S_IXUSR) {
if (sys_acl_add_perm(*p_permset, SMB_ACL_EXECUTE) == -1)
return -1;
}
return 0;
}
static void create_file_sids(SMB_STRUCT_STAT *psbuf, DOM_SID *powner_sid, DOM_SID *pgroup_sid)
{
uid_to_sid( powner_sid, psbuf->st_uid );
gid_to_sid( pgroup_sid, psbuf->st_gid );
}
static void merge_aces( canon_ace **pp_list_head )
{
canon_ace *list_head = *pp_list_head;
canon_ace *curr_ace_outer;
canon_ace *curr_ace_outer_next;
for (curr_ace_outer = list_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
canon_ace *curr_ace;
canon_ace *curr_ace_next;
curr_ace_outer_next = curr_ace_outer->next;
for (curr_ace = curr_ace_outer->next; curr_ace; curr_ace = curr_ace_next) {
curr_ace_next = curr_ace->next;
if (sid_equal(&curr_ace->trustee, &curr_ace_outer->trustee) &&
(curr_ace->attr == curr_ace_outer->attr)) {
if( DEBUGLVL( 10 )) {
dbgtext("merge_aces: Merging ACE's\n");
print_canon_ace( curr_ace_outer, 0);
print_canon_ace( curr_ace, 0);
}
curr_ace_outer->perms |= curr_ace->perms;
DLIST_REMOVE(list_head, curr_ace);
SAFE_FREE(curr_ace);
curr_ace_outer_next = curr_ace_outer->next;
}
}
}
for (curr_ace_outer = list_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
canon_ace *curr_ace;
canon_ace *curr_ace_next;
curr_ace_outer_next = curr_ace_outer->next;
for (curr_ace = curr_ace_outer->next; curr_ace; curr_ace = curr_ace_next) {
curr_ace_next = curr_ace->next;
if (sid_equal(&curr_ace->trustee, &curr_ace_outer->trustee) &&
(curr_ace_outer->attr == DENY_ACE) && (curr_ace->attr == ALLOW_ACE)) {
if( DEBUGLVL( 10 )) {
dbgtext("merge_aces: Masking ACE's\n");
print_canon_ace( curr_ace_outer, 0);
print_canon_ace( curr_ace, 0);
}
curr_ace->perms &= ~curr_ace_outer->perms;
if (curr_ace->perms == 0) {
DLIST_REMOVE(list_head, curr_ace);
SAFE_FREE(curr_ace);
curr_ace_outer_next = curr_ace_outer->next;
} else {
DLIST_REMOVE(list_head, curr_ace_outer);
SAFE_FREE(curr_ace_outer);
break;
}
}
}
}
*pp_list_head = list_head;
}
static SEC_ACCESS map_canon_ace_perms(int *pacl_type, DOM_SID *powner_sid, canon_ace *ace)
{
SEC_ACCESS sa;
uint32 nt_mask = 0;
*pacl_type = SEC_ACE_TYPE_ACCESS_ALLOWED;
if ((ace->perms & ALL_ACE_PERMS) == ALL_ACE_PERMS) {
nt_mask = UNIX_ACCESS_RWX;
} else if ((ace->perms & ALL_ACE_PERMS) == (mode_t)0) {
nt_mask = UNIX_ACCESS_NONE;
} else {
nt_mask |= ((ace->perms & S_IRUSR) ? UNIX_ACCESS_R : 0 );
nt_mask |= ((ace->perms & S_IWUSR) ? UNIX_ACCESS_W : 0 );
nt_mask |= ((ace->perms & S_IXUSR) ? UNIX_ACCESS_X : 0 );
}
DEBUG(10,("map_canon_ace_perms: Mapped (UNIX) %x to (NT) %x\n",
(unsigned int)ace->perms, (unsigned int)nt_mask ));
init_sec_access(&sa,nt_mask);
return sa;
}
#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)
static mode_t map_nt_perms( SEC_ACCESS sec_access, int type)
{
mode_t mode = 0;
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|FILE_SPECIFIC_READ_BITS)) ? S_IRUSR : 0;
mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWUSR : 0;
mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_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|FILE_SPECIFIC_READ_BITS)) ? S_IRGRP : 0;
mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWGRP : 0;
mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_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|FILE_SPECIFIC_READ_BITS)) ? S_IROTH : 0;
mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWOTH : 0;
mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXOTH : 0;
}
break;
}
return mode;
}
static BOOL unpack_nt_owners(SMB_STRUCT_STAT *psbuf, uid_t *puser, gid_t *pgrp, uint32 security_info_sent, SEC_DESC *psd)
{
DOM_SID owner_sid;
DOM_SID grp_sid;
enum SID_NAME_USE sid_type;
*puser = (uid_t)-1;
*pgrp = (gid_t)-1;
if(security_info_sent == 0) {
DEBUG(0,("unpack_nt_owners: no security info sent !\n"));
return True;
}
memset(&owner_sid, '\0', sizeof(owner_sid));
memset(&grp_sid, '\0', sizeof(grp_sid));
DEBUG(5,("unpack_nt_owners: validating owner_sids.\n"));
if (security_info_sent & OWNER_SECURITY_INFORMATION) {
sid_copy(&owner_sid, psd->owner_sid);
if (!sid_to_uid( &owner_sid, puser, &sid_type)) {
DEBUG(3,("unpack_nt_owners: unable to validate owner sid.\n"));
return False;
}
}
if (security_info_sent & GROUP_SECURITY_INFORMATION) {
sid_copy(&grp_sid, psd->grp_sid);
if (!sid_to_gid( &grp_sid, pgrp, &sid_type)) {
DEBUG(3,("unpack_nt_owners: unable to validate group sid.\n"));
return False;
}
}
DEBUG(5,("unpack_nt_owners: owner_sids validated.\n"));
return True;
}
static mode_t apply_default_perms(files_struct *fsp, mode_t perms, mode_t type)
{
int snum = SNUM(fsp->conn);
mode_t and_bits = (mode_t)0;
mode_t or_bits = (mode_t)0;
if (fsp->is_directory) {
and_bits = lp_dir_security_mask(snum);
or_bits = lp_force_dir_security_mode(snum);
} else {
and_bits = lp_security_mask(snum);
or_bits = lp_force_security_mode(snum);
}
switch(type) {
case S_IRUSR:
and_bits = unix_perms_to_acl_perms(and_bits, S_IRUSR, S_IWUSR, S_IXUSR);
or_bits = unix_perms_to_acl_perms(or_bits, S_IRUSR, S_IWUSR, S_IXUSR);
break;
case S_IRGRP:
and_bits = unix_perms_to_acl_perms(and_bits, S_IRGRP, S_IWGRP, S_IXGRP);
or_bits = unix_perms_to_acl_perms(or_bits, S_IRGRP, S_IWGRP, S_IXGRP);
break;
case S_IROTH:
and_bits = unix_perms_to_acl_perms(and_bits, S_IROTH, S_IWOTH, S_IXOTH);
or_bits = unix_perms_to_acl_perms(or_bits, S_IROTH, S_IWOTH, S_IXOTH);
break;
}
return ((perms & and_bits)|or_bits);
}
static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
files_struct *fsp,
DOM_SID *pfile_owner_sid,
DOM_SID *pfile_grp_sid,
SMB_STRUCT_STAT *pst,
BOOL setting_acl)
{
extern DOM_SID global_sid_World;
canon_ace *pace;
BOOL got_user = False;
BOOL got_grp = False;
BOOL got_other = False;
for (pace = *pp_ace; pace; pace = pace->next) {
if (pace->type == SMB_ACL_USER_OBJ) {
if (setting_acl) {
pace->perms |= S_IRUSR;
if (fsp->is_directory)
pace->perms |= (S_IWUSR|S_IXUSR);
pace->perms = apply_default_perms(fsp, pace->perms, S_IRUSR);
}
got_user = True;
} else if (pace->type == SMB_ACL_GROUP_OBJ) {
if (setting_acl)
pace->perms = apply_default_perms(fsp, pace->perms, S_IRGRP);
got_grp = True;
} else if (pace->type == SMB_ACL_OTHER) {
if (setting_acl)
pace->perms = apply_default_perms(fsp, pace->perms, S_IROTH);
got_other = True;
}
}
if (!got_user) {
if ((pace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
return False;
}
ZERO_STRUCTP(pace);
pace->type = SMB_ACL_USER_OBJ;
pace->owner_type = UID_ACE;
pace->unix_ug.uid = pst->st_uid;
pace->trustee = *pfile_owner_sid;
pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRUSR, S_IWUSR, S_IXUSR);
pace->attr = ALLOW_ACE;
DLIST_ADD(*pp_ace, pace);
}
if (!got_grp) {
if ((pace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
return False;
}
ZERO_STRUCTP(pace);
pace->type = SMB_ACL_GROUP_OBJ;
pace->owner_type = GID_ACE;
pace->unix_ug.uid = pst->st_gid;
pace->trustee = *pfile_grp_sid;
pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRGRP, S_IWGRP, S_IXGRP);
pace->attr = ALLOW_ACE;
DLIST_ADD(*pp_ace, pace);
}
if (!got_other) {
if ((pace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
return False;
}
ZERO_STRUCTP(pace);
pace->type = SMB_ACL_OTHER;
pace->owner_type = WORLD_ACE;
pace->unix_ug.world = -1;
pace->trustee = global_sid_World;
pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IROTH, S_IWOTH, S_IXOTH);
pace->attr = ALLOW_ACE;
DLIST_ADD(*pp_ace, pace);
}
return True;
}
static BOOL create_canon_ace_lists(files_struct *fsp,
DOM_SID *pfile_owner_sid,
DOM_SID *pfile_grp_sid,
canon_ace **ppfile_ace, canon_ace **ppdir_ace,
SEC_ACL *dacl)
{
extern DOM_SID global_sid_World;
extern struct generic_mapping file_generic_mapping;
BOOL all_aces_are_inherit_only = (fsp->is_directory ? True : False);
canon_ace *file_ace = NULL;
canon_ace *dir_ace = NULL;
canon_ace *tmp_ace = NULL;
canon_ace *current_ace = NULL;
BOOL got_dir_allow = False;
BOOL got_file_allow = False;
int i, j;
*ppfile_ace = NULL;
*ppdir_ace = NULL;
for(i = 0; i < dacl->num_aces; i++) {
SEC_ACE *psa = &dacl->ace[i];
if((psa->type != SEC_ACE_TYPE_ACCESS_ALLOWED) && (psa->type != SEC_ACE_TYPE_ACCESS_DENIED)) {
DEBUG(3,("create_canon_ace_lists: unable to set anything but an ALLOW or DENY ACE.\n"));
return False;
}
se_map_generic(&psa->info.mask, &file_generic_mapping);
psa->info.mask &= (UNIX_ACCESS_NONE|FILE_ALL_ACCESS);
if(psa->info.mask != UNIX_ACCESS_NONE)
psa->info.mask &= ~UNIX_ACCESS_NONE;
}
for(i = 0; i < dacl->num_aces; i++) {
SEC_ACE *psa1 = &dacl->ace[i];
for (j = i + 1; j < dacl->num_aces; j++) {
SEC_ACE *psa2 = &dacl->ace[j];
if (psa1->info.mask != psa2->info.mask)
continue;
if (!sid_equal(&psa1->trustee, &psa2->trustee))
continue;
if (psa1->flags & SEC_ACE_FLAG_INHERIT_ONLY) {
psa1->flags |= (psa2->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT));
psa2->flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT);
} else if (psa2->flags & SEC_ACE_FLAG_INHERIT_ONLY) {
psa2->flags |= (psa1->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT));
psa1->flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT);
}
}
}
for(i = 0; i < dacl->num_aces; i++) {
enum SID_NAME_USE sid_type;
SEC_ACE *psa = &dacl->ace[i];
if (non_mappable_sid(&psa->trustee)) {
fstring str;
DEBUG(10,("create_canon_ace_lists: ignoring non-mappable SID %s\n",
sid_to_string(str, &psa->trustee) ));
continue;
}
if ((current_ace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
DEBUG(0,("create_canon_ace_lists: malloc fail.\n"));
return False;
}
ZERO_STRUCTP(current_ace);
sid_copy(¤t_ace->trustee, &psa->trustee);
if( sid_equal(¤t_ace->trustee, &global_sid_World)) {
current_ace->owner_type = WORLD_ACE;
current_ace->unix_ug.world = -1;
} else if (sid_to_uid( ¤t_ace->trustee, ¤t_ace->unix_ug.uid, &sid_type)) {
current_ace->owner_type = UID_ACE;
} else if (sid_to_gid( ¤t_ace->trustee, ¤t_ace->unix_ug.gid, &sid_type)) {
current_ace->owner_type = GID_ACE;
} else {
fstring str;
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
DEBUG(0,("create_canon_ace_lists: unable to map SID %s to uid or gid.\n",
sid_to_string(str, ¤t_ace->trustee) ));
SAFE_FREE(current_ace);
return False;
}
current_ace->perms |= map_nt_perms( psa->info, S_IRUSR);
current_ace->attr = (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) ? ALLOW_ACE : DENY_ACE;
if(sid_equal(¤t_ace->trustee, pfile_owner_sid)) {
current_ace->type = SMB_ACL_USER_OBJ;
} else if( sid_equal(¤t_ace->trustee, pfile_grp_sid)) {
current_ace->type = SMB_ACL_GROUP_OBJ;
} else if( sid_equal(¤t_ace->trustee, &global_sid_World)) {
current_ace->type = SMB_ACL_OTHER;
} else {
current_ace->type = (current_ace->owner_type == UID_ACE) ? SMB_ACL_USER : SMB_ACL_GROUP;
}
if (fsp->is_directory) {
if ((psa->flags & (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) ==
(SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) {
DLIST_ADD_END(dir_ace, current_ace, tmp_ace);
if (current_ace->attr == ALLOW_ACE)
got_dir_allow = True;
if ((current_ace->attr == DENY_ACE) && got_dir_allow) {
DEBUG(0,("create_canon_ace_lists: malformed ACL in inheritable ACL ! \
Deny entry after Allow entry. Failing to set on file %s.\n", fsp->fsp_name ));
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
SAFE_FREE(current_ace);
return False;
}
if( DEBUGLVL( 10 )) {
dbgtext("create_canon_ace_lists: adding dir ACL:\n");
print_canon_ace( current_ace, 0);
}
if (!(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY)) {
canon_ace *dup_ace = dup_canon_ace(current_ace);
if (!dup_ace) {
DEBUG(0,("create_canon_ace_lists: malloc fail !\n"));
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
return False;
}
current_ace = dup_ace;
} else {
current_ace = NULL;
}
}
}
if (!(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY)) {
DLIST_ADD_END(file_ace, current_ace, tmp_ace);
if (current_ace->attr == ALLOW_ACE)
got_file_allow = True;
if ((current_ace->attr == DENY_ACE) && got_file_allow) {
DEBUG(0,("create_canon_ace_lists: malformed ACL in file ACL ! \
Deny entry after Allow entry. Failing to set on file %s.\n", fsp->fsp_name ));
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
SAFE_FREE(current_ace);
return False;
}
if( DEBUGLVL( 10 )) {
dbgtext("create_canon_ace_lists: adding file ACL:\n");
print_canon_ace( current_ace, 0);
}
all_aces_are_inherit_only = False;
current_ace = NULL;
}
SAFE_FREE(current_ace);
}
if (fsp->is_directory && all_aces_are_inherit_only) {
DEBUG(10,("create_canon_ace_lists: Win2k inherit acl traverse. Ignoring DACL.\n"));
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
file_ace = NULL;
dir_ace = NULL;
}
*ppfile_ace = file_ace;
*ppdir_ace = dir_ace;
return True;
}
static BOOL uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
{
extern DOM_SID global_sid_World;
fstring u_name;
fstring g_name;
if (sid_equal(&group_ace->trustee, &global_sid_World))
return True;
fstrcpy(u_name, uidtoname(uid_ace->unix_ug.uid));
fstrcpy(g_name, gidtoname(group_ace->unix_ug.gid));
return user_in_group_list(u_name, g_name );
}
static void process_deny_list( canon_ace **pp_ace_list )
{
extern DOM_SID global_sid_World;
canon_ace *ace_list = *pp_ace_list;
canon_ace *curr_ace = NULL;
canon_ace *curr_ace_next = NULL;
for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
canon_ace *allow_ace_p;
curr_ace_next = curr_ace->next;
if (curr_ace->attr != DENY_ACE)
continue;
if (curr_ace->perms == (mode_t)0) {
DLIST_REMOVE(ace_list, curr_ace);
continue;
}
if (!sid_equal(&curr_ace->trustee, &global_sid_World))
continue;
SMB_ASSERT(curr_ace->owner_type == WORLD_ACE);
if (curr_ace->perms == ALL_ACE_PERMS) {
canon_ace *prev_entry = curr_ace->prev;
free_canon_ace_list( curr_ace );
if (prev_entry)
prev_entry->next = NULL;
else {
ace_list = NULL;
}
break;
}
for (allow_ace_p = curr_ace->next; allow_ace_p; allow_ace_p = allow_ace_p->next) {
if (allow_ace_p->attr != ALLOW_ACE)
continue;
allow_ace_p->perms &= ~curr_ace->perms;
}
DLIST_REMOVE(ace_list, curr_ace);
}
for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
mode_t new_perms = (mode_t)0;
canon_ace *allow_ace_p;
canon_ace *tmp_ace;
curr_ace_next = curr_ace->next;
if (curr_ace->attr != DENY_ACE)
continue;
if (curr_ace->owner_type != UID_ACE)
continue;
if (curr_ace->perms == ALL_ACE_PERMS) {
curr_ace->attr = ALLOW_ACE;
curr_ace->perms = (mode_t)0;
DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
continue;
}
for (allow_ace_p = curr_ace->next; allow_ace_p; allow_ace_p = allow_ace_p->next) {
if (allow_ace_p->attr != ALLOW_ACE)
continue;
if (allow_ace_p->owner_type == UID_ACE)
continue;
if (uid_entry_in_group( curr_ace, allow_ace_p))
new_perms |= allow_ace_p->perms;
}
curr_ace->attr = ALLOW_ACE;
curr_ace->perms = (new_perms & ~curr_ace->perms);
DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
}
for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
canon_ace *tmp_ace;
canon_ace *allow_ace_p;
canon_ace *allow_everyone_p = NULL;
curr_ace_next = curr_ace->next;
if (curr_ace->attr != DENY_ACE)
continue;
if (curr_ace->owner_type != GID_ACE)
continue;
for (allow_ace_p = curr_ace->next; allow_ace_p; allow_ace_p = allow_ace_p->next) {
if (allow_ace_p->attr != ALLOW_ACE)
continue;
if (allow_ace_p->owner_type == WORLD_ACE)
allow_everyone_p = allow_ace_p;
if (allow_ace_p->owner_type != UID_ACE)
continue;
if (uid_entry_in_group( allow_ace_p, curr_ace))
allow_ace_p->perms &= ~curr_ace->perms;
}
curr_ace->attr = ALLOW_ACE;
if (allow_everyone_p)
curr_ace->perms = allow_everyone_p->perms & ~curr_ace->perms;
else
curr_ace->perms = (mode_t)0;
DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
}
*pp_ace_list = ace_list;
}
static mode_t create_default_mode(files_struct *fsp, BOOL interitable_mode)
{
int snum = SNUM(fsp->conn);
mode_t and_bits = (mode_t)0;
mode_t or_bits = (mode_t)0;
mode_t mode = interitable_mode ? unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name) : S_IRUSR;
if (fsp->is_directory)
mode |= (S_IWUSR|S_IXUSR);
if (fsp->is_directory) {
and_bits = lp_dir_security_mask(snum);
or_bits = lp_force_dir_security_mode(snum);
} else {
and_bits = lp_security_mask(snum);
or_bits = lp_force_security_mode(snum);
}
return ((mode & and_bits)|or_bits);
}
static BOOL unpack_canon_ace(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,
uint32 security_info_sent, SEC_DESC *psd)
{
canon_ace *file_ace = NULL;
canon_ace *dir_ace = NULL;
*ppfile_ace = NULL;
*ppdir_ace = NULL;
if(security_info_sent == 0) {
DEBUG(0,("unpack_canon_ace: no security info sent !\n"));
return False;
}
if(!(security_info_sent & DACL_SECURITY_INFORMATION) || !psd->dacl)
return True;
if (!create_canon_ace_lists( fsp, pfile_owner_sid, pfile_grp_sid,
&file_ace, &dir_ace, psd->dacl))
return False;
if ((file_ace == NULL) && (dir_ace == NULL)) {
return True;
}
print_canon_ace_list( "file ace - before merge", file_ace);
merge_aces( &file_ace );
print_canon_ace_list( "dir ace - before merge", dir_ace);
merge_aces( &dir_ace );
print_canon_ace_list( "file ace - before deny", file_ace);
process_deny_list( &file_ace);
print_canon_ace_list( "dir ace - before deny", dir_ace);
process_deny_list( &dir_ace);
print_canon_ace_list( "file ace - before valid", file_ace);
pst->st_mode = create_default_mode(fsp, False);
if (!ensure_canon_entry_valid(&file_ace, fsp, pfile_owner_sid, pfile_grp_sid, pst, True)) {
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
return False;
}
print_canon_ace_list( "dir ace - before valid", dir_ace);
pst->st_mode = create_default_mode(fsp, True);
if (!ensure_canon_entry_valid(&dir_ace, fsp, pfile_owner_sid, pfile_grp_sid, pst, True)) {
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
return False;
}
print_canon_ace_list( "file ace - return", file_ace);
print_canon_ace_list( "dir ace - return", dir_ace);
*ppfile_ace = file_ace;
*ppdir_ace = dir_ace;
return True;
}
static void arrange_posix_perms( char *filename, canon_ace **pp_list_head)
{
canon_ace *list_head = *pp_list_head;
canon_ace *owner_ace = NULL;
canon_ace *other_ace = NULL;
canon_ace *ace = NULL;
for (ace = list_head; ace; ace = ace->next) {
if (ace->type == SMB_ACL_USER_OBJ)
owner_ace = ace;
else if (ace->type == SMB_ACL_OTHER) {
other_ace = ace;
}
}
if (!owner_ace || !other_ace) {
DEBUG(0,("arrange_posix_perms: Invalid POSIX permissions for file %s, missing owner or other.\n",
filename ));
return;
}
if (owner_ace) {
DLIST_PROMOTE(list_head, owner_ace);
}
if (other_ace) {
DLIST_DEMOTE(list_head, other_ace, ace);
}
*pp_list_head = list_head;
}
static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_STRUCT_STAT *psbuf,
DOM_SID *powner, DOM_SID *pgroup)
{
extern DOM_SID global_sid_World;
mode_t acl_mask = (S_IRUSR|S_IWUSR|S_IXUSR);
canon_ace *list_head = NULL;
canon_ace *ace = NULL;
canon_ace *next_ace = NULL;
int entry_id = SMB_ACL_FIRST_ENTRY;
SMB_ACL_ENTRY_T entry;
size_t ace_count;
while ( posix_acl && (sys_acl_get_entry(posix_acl, entry_id, &entry) == 1)) {
SMB_ACL_TAG_T tagtype;
SMB_ACL_PERMSET_T permset;
DOM_SID sid;
posix_id unix_ug;
enum ace_owner owner_type;
if (entry_id == SMB_ACL_FIRST_ENTRY)
entry_id = SMB_ACL_NEXT_ENTRY;
if (sys_acl_get_tag_type(entry, &tagtype) == -1)
continue;
if (sys_acl_get_permset(entry, &permset) == -1)
continue;
switch(tagtype) {
case SMB_ACL_USER_OBJ:
uid_to_sid( &sid, psbuf->st_uid );
unix_ug.uid = psbuf->st_uid;
owner_type = UID_ACE;
break;
case SMB_ACL_USER:
{
uid_t *puid = (uid_t *)sys_acl_get_qualifier(entry);
if (puid == NULL) {
DEBUG(0,("canonicalise_acl: Failed to get uid.\n"));
continue;
}
uid_to_sid( &sid, *puid);
unix_ug.uid = *puid;
owner_type = UID_ACE;
sys_acl_free_qualifier((void *)puid,tagtype);
break;
}
case SMB_ACL_GROUP_OBJ:
gid_to_sid( &sid, psbuf->st_gid );
unix_ug.gid = psbuf->st_gid;
owner_type = GID_ACE;
break;
case SMB_ACL_GROUP:
{
gid_t *pgid = (gid_t *)sys_acl_get_qualifier(entry);
if (pgid == NULL) {
DEBUG(0,("canonicalise_acl: Failed to get gid.\n"));
continue;
}
gid_to_sid( &sid, *pgid);
unix_ug.gid = *pgid;
owner_type = GID_ACE;
sys_acl_free_qualifier((void *)pgid,tagtype);
break;
}
case SMB_ACL_MASK:
acl_mask = convert_permset_to_mode_t(permset);
continue;
case SMB_ACL_OTHER:
sid = global_sid_World;
unix_ug.world = -1;
owner_type = WORLD_ACE;
break;
default:
DEBUG(0,("canonicalise_acl: Unknown tagtype %u\n", (unsigned int)tagtype));
continue;
}
if ((ace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL)
goto fail;
ZERO_STRUCTP(ace);
ace->type = tagtype;
ace->perms = convert_permset_to_mode_t(permset);
ace->attr = ALLOW_ACE;
ace->trustee = sid;
ace->unix_ug = unix_ug;
ace->owner_type = owner_type;
DLIST_ADD(list_head, ace);
}
if (!ensure_canon_entry_valid(&list_head, fsp, powner, pgroup, psbuf, False))
goto fail;
arrange_posix_perms(fsp->fsp_name,&list_head );
DEBUG(10,("canonicalise_acl: ace entries before arrange :\n"));
for ( ace_count = 0, ace = list_head; ace; ace = next_ace, ace_count++) {
next_ace = ace->next;
if (ace->type != SMB_ACL_OTHER && ace->type != SMB_ACL_USER_OBJ)
ace->perms &= acl_mask;
if (ace->perms == 0) {
DLIST_PROMOTE(list_head, ace);
}
if( DEBUGLVL( 10 ) ) {
print_canon_ace(ace, ace_count);
}
}
print_canon_ace_list( "canonicalise_acl: ace entries after arrange", list_head );
return list_head;
fail:
free_canon_ace_list(list_head);
return NULL;
}
static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL default_ace, BOOL *pacl_set_support)
{
BOOL ret = False;
SMB_ACL_T the_acl = sys_acl_init((int)count_canon_ace_list(the_ace) + 1);
canon_ace *p_ace;
int i;
SMB_ACL_ENTRY_T mask_entry;
SMB_ACL_PERMSET_T mask_permset;
SMB_ACL_TYPE_T the_acl_type = (default_ace ? SMB_ACL_TYPE_DEFAULT : SMB_ACL_TYPE_ACCESS);
if (the_acl == NULL) {
if (errno != ENOSYS) {
DEBUG(0,("set_canon_ace_list: Unable to init %s ACL. (%s)\n",
default_ace ? "default" : "file", strerror(errno) ));
}
*pacl_set_support = False;
return False;
}
for (i = 0, p_ace = the_ace; p_ace; p_ace = p_ace->next, i++ ) {
SMB_ACL_ENTRY_T the_entry;
SMB_ACL_PERMSET_T the_permset;
if (sys_acl_create_entry( &the_acl, &the_entry) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to create entry %d. (%s)\n",
i, strerror(errno) ));
goto done;
}
*pacl_set_support = True;
if (sys_acl_set_tag_type(the_entry, p_ace->type) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to set tag type on entry %d. (%s)\n",
i, strerror(errno) ));
goto done;
}
if ((p_ace->type == SMB_ACL_USER) || (p_ace->type == SMB_ACL_GROUP)) {
if (sys_acl_set_qualifier(the_entry,(void *)&p_ace->unix_ug.uid) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to set qualifier on entry %d. (%s)\n",
i, strerror(errno) ));
goto done;
}
}
if (sys_acl_get_permset(the_entry, &the_permset) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to get permset on entry %d. (%s)\n",
i, strerror(errno) ));
goto done;
}
if (map_acl_perms_to_permset(p_ace->perms, &the_permset) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to create permset for mode (%u) on entry %d. (%s)\n",
(unsigned int)p_ace->perms, i, strerror(errno) ));
goto done;
}
if (sys_acl_set_permset(the_entry, the_permset) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to add permset on entry %d. (%s)\n",
i, strerror(errno) ));
goto done;
}
if( DEBUGLVL( 10 ))
print_canon_ace( p_ace, i);
}
if (sys_acl_create_entry( &the_acl, &mask_entry) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to create mask entry. (%s)\n", strerror(errno) ));
goto done;
}
if (sys_acl_set_tag_type(mask_entry, SMB_ACL_MASK) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to set tag type on mask entry. (%s)\n",strerror(errno) ));
goto done;
}
if (sys_acl_get_permset(mask_entry, &mask_permset) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to get mask permset. (%s)\n", strerror(errno) ));
goto done;
}
if (map_acl_perms_to_permset(S_IRUSR|S_IWUSR|S_IXUSR, &mask_permset) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to create mask permset. (%s)\n", strerror(errno) ));
goto done;
}
if (sys_acl_set_permset(mask_entry, mask_permset) == -1) {
DEBUG(0,("set_canon_ace_list: Failed to add mask permset. (%s)\n", strerror(errno) ));
goto done;
}
if (sys_acl_valid(the_acl) == -1) {
DEBUG(0,("set_canon_ace_list: ACL type (%s) is invalid for set (%s).\n",
the_acl_type == SMB_ACL_TYPE_DEFAULT ? "directory default" : "file",
strerror(errno) ));
goto done;
}
if(default_ace || fsp->is_directory || fsp->fd == -1) {
if (sys_acl_set_file(dos_to_unix(fsp->fsp_name,False), the_acl_type, the_acl) == -1) {
if (errno == ENOSYS)
*pacl_set_support = False;
DEBUG(2,("set_canon_ace_list: sys_acl_set_file type %s failed for file %s (%s).\n",
the_acl_type == SMB_ACL_TYPE_DEFAULT ? "directory default" : "file",
fsp->fsp_name, strerror(errno) ));
goto done;
}
} else {
if (sys_acl_set_fd(fsp->fd, the_acl) == -1) {
if (errno == ENOSYS)
*pacl_set_support = False;
DEBUG(2,("set_canon_ace_list: sys_acl_set_file failed for file %s (%s).\n",
fsp->fsp_name, strerror(errno) ));
goto done;
}
}
ret = True;
done:
if (the_acl != NULL)
sys_acl_free_acl(the_acl);
return ret;
}
#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)
{
int snum = SNUM(fsp->conn);
size_t ace_count = count_canon_ace_list(file_ace_list);
canon_ace *ace_p;
canon_ace *owner_ace = NULL;
canon_ace *group_ace = NULL;
canon_ace *other_ace = NULL;
mode_t and_bits;
mode_t or_bits;
if (ace_count != 3) {
DEBUG(3,("convert_canon_ace_to_posix_perms: Too many ACE entries for file %s to convert to \
posix perms.\n", fsp->fsp_name ));
return False;
}
for (ace_p = file_ace_list; ace_p; ace_p = ace_p->next) {
if (ace_p->owner_type == UID_ACE)
owner_ace = ace_p;
else if (ace_p->owner_type == GID_ACE)
group_ace = ace_p;
else if (ace_p->owner_type == WORLD_ACE)
other_ace = ace_p;
}
if (!owner_ace || !group_ace || !other_ace) {
DEBUG(3,("convert_canon_ace_to_posix_perms: Can't get standard entries for file %s.\n",
fsp->fsp_name ));
return False;
}
*posix_perms = (mode_t)0;
*posix_perms |= owner_ace->perms;
*posix_perms |= MAP_PERM(group_ace->perms, S_IRUSR, S_IRGRP);
*posix_perms |= MAP_PERM(group_ace->perms, S_IWUSR, S_IWGRP);
*posix_perms |= MAP_PERM(group_ace->perms, S_IXUSR, S_IXGRP);
*posix_perms |= MAP_PERM(other_ace->perms, S_IRUSR, S_IROTH);
*posix_perms |= MAP_PERM(other_ace->perms, S_IWUSR, S_IWOTH);
*posix_perms |= MAP_PERM(other_ace->perms, S_IXUSR, S_IXOTH);
*posix_perms |= S_IRUSR;
if (fsp->is_directory)
*posix_perms |= (S_IWUSR|S_IXUSR);
if (fsp->is_directory) {
and_bits = lp_dir_security_mask(snum);
or_bits = lp_force_dir_security_mode(snum);
} else {
and_bits = lp_security_mask(snum);
or_bits = lp_force_security_mode(snum);
}
*posix_perms = (((*posix_perms) & and_bits)|or_bits);
DEBUG(10,("convert_canon_ace_to_posix_perms: converted u=%o,g=%o,w=%o to perm=0%o for file %s.\n",
(int)owner_ace->perms, (int)group_ace->perms, (int)other_ace->perms, (int)*posix_perms,
fsp->fsp_name ));
return True;
}
static int nt_ace_comp( SEC_ACE *a1, SEC_ACE *a2)
{
if (a1->type == a2->type)
return 0;
if (a1->type == SEC_ACE_TYPE_ACCESS_DENIED && a2->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
return -1;
return 1;
}
size_t get_nt_acl(files_struct *fsp, SEC_DESC **ppdesc)
{
SMB_STRUCT_STAT sbuf;
SEC_ACE *nt_ace_list = NULL;
DOM_SID owner_sid;
DOM_SID group_sid;
size_t sd_size = 0;
SEC_ACL *psa = NULL;
size_t num_acls = 0;
size_t num_dir_acls = 0;
size_t num_aces = 0;
SMB_ACL_T posix_acl = NULL;
SMB_ACL_T dir_acl = NULL;
canon_ace *file_ace = NULL;
canon_ace *dir_ace = NULL;
*ppdesc = NULL;
DEBUG(10,("get_nt_acl: called for file %s\n", fsp->fsp_name ));
if(fsp->is_directory || fsp->fd == -1) {
if(vfs_stat(fsp->conn,fsp->fsp_name, &sbuf) != 0) {
return 0;
}
posix_acl = sys_acl_get_file( dos_to_unix(fsp->fsp_name, False), SMB_ACL_TYPE_ACCESS);
if(fsp->is_directory)
dir_acl = sys_acl_get_file( dos_to_unix(fsp->fsp_name, False), SMB_ACL_TYPE_DEFAULT);
} else {
if(vfs_fstat(fsp,fsp->fd,&sbuf) != 0) {
return 0;
}
posix_acl = sys_acl_get_fd(fsp->fd);
}
DEBUG(5,("get_nt_acl : file ACL %s, directory ACL %s\n",
posix_acl ? "present" : "absent",
dir_acl ? "present" : "absent" ));
create_file_sids(&sbuf, &owner_sid, &group_sid);
file_ace = canonicalise_acl( fsp, posix_acl, &sbuf, &owner_sid, &group_sid);
num_acls = count_canon_ace_list(file_ace);
if (num_acls == 0) {
DEBUG(0,("get_nt_acl : No ACLs on file (%s) !\n", fsp->fsp_name ));
return 0;
}
if (fsp->is_directory) {
sbuf.st_mode = unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name);
dir_ace = canonicalise_acl(fsp, dir_acl, &sbuf, &owner_sid, &group_sid);
num_dir_acls = count_canon_ace_list(dir_ace);
}
if ((nt_ace_list = (SEC_ACE *)malloc((num_acls + num_dir_acls)* sizeof(SEC_ACE))) == NULL) {
DEBUG(0,("get_nt_acl: Unable to malloc space for nt_ace_list.\n"));
goto done;
}
memset(nt_ace_list, '\0', (num_acls + num_dir_acls) * sizeof(SEC_ACE) );
{
canon_ace *ace;
int nt_acl_type;
int i;
ace = file_ace;
for (i = 0; i < num_acls; i++, ace = ace->next) {
SEC_ACCESS acc = map_canon_ace_perms(&nt_acl_type, &owner_sid, ace );
init_sec_ace(&nt_ace_list[num_aces++], &ace->trustee, nt_acl_type, acc, 0);
}
ace = dir_ace;
for (i = 0; i < num_dir_acls; i++, ace = ace->next) {
SEC_ACCESS acc = map_canon_ace_perms(&nt_acl_type, &owner_sid, ace );
init_sec_ace(&nt_ace_list[num_aces++], &ace->trustee, nt_acl_type, acc,
SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY);
}
if (num_acls + num_dir_acls)
qsort( nt_ace_list, num_acls + num_dir_acls, sizeof(nt_ace_list[0]), QSORT_CAST nt_ace_comp);
}
if (num_acls) {
if((psa = make_sec_acl( main_loop_talloc_get(), ACL_REVISION, num_aces, nt_ace_list)) == NULL) {
DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n"));
goto done;
}
}
*ppdesc = make_standard_sec_desc( main_loop_talloc_get(), &owner_sid, &group_sid, psa, &sd_size);
if(!*ppdesc) {
DEBUG(0,("get_nt_acl: Unable to malloc space for security descriptor.\n"));
sd_size = 0;
}
done:
if (posix_acl)
sys_acl_free_acl(posix_acl);
if (dir_acl)
sys_acl_free_acl(dir_acl);
free_canon_ace_list(file_ace);
free_canon_ace_list(dir_ace);
SAFE_FREE(nt_ace_list);
return sd_size;
}
BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
{
connection_struct *conn = fsp->conn;
uid_t user = (uid_t)-1;
gid_t grp = (gid_t)-1;
SMB_STRUCT_STAT sbuf;
DOM_SID file_owner_sid;
DOM_SID file_grp_sid;
canon_ace *file_ace_list = NULL;
canon_ace *dir_ace_list = NULL;
BOOL acl_perms = False;
mode_t orig_mode = (mode_t)0;
uid_t orig_uid;
gid_t orig_gid;
DEBUG(10,("set_nt_acl: called for file %s\n", fsp->fsp_name ));
if(fsp->is_directory || fsp->fd == -1) {
if(vfs_stat(fsp->conn,fsp->fsp_name, &sbuf) != 0)
return False;
} else {
if(vfs_fstat(fsp,fsp->fd,&sbuf) != 0)
return False;
}
orig_mode = sbuf.st_mode;
orig_uid = sbuf.st_uid;
orig_gid = sbuf.st_gid;
if (!unpack_nt_owners( &sbuf, &user, &grp, security_info_sent, psd))
return False;
if((user != (uid_t)-1 || grp != (uid_t)-1) && (orig_uid != user || orig_gid != grp)) {
DEBUG(3,("set_nt_acl: chown %s. uid = %u, gid = %u.\n",
fsp->fsp_name, (unsigned int)user, (unsigned int)grp ));
if(vfs_chown( fsp->conn, fsp->fsp_name, user, grp) == -1) {
DEBUG(3,("set_nt_acl: chown %s, %u, %u failed. Error = %s.\n",
fsp->fsp_name, (unsigned int)user, (unsigned int)grp, strerror(errno) ));
return False;
}
if(fsp->is_directory) {
if(vfs_stat(fsp->conn, fsp->fsp_name, &sbuf) != 0) {
return False;
}
} else {
int ret;
if(fsp->fd == -1)
ret = vfs_stat(fsp->conn, fsp->fsp_name, &sbuf);
else
ret = vfs_fstat(fsp,fsp->fd,&sbuf);
if(ret != 0)
return False;
}
orig_mode = sbuf.st_mode;
orig_uid = sbuf.st_uid;
orig_gid = sbuf.st_gid;
}
create_file_sids(&sbuf, &file_owner_sid, &file_grp_sid);
acl_perms = unpack_canon_ace( fsp, &sbuf, &file_owner_sid, &file_grp_sid,
&file_ace_list, &dir_ace_list, security_info_sent, psd);
if ((file_ace_list == NULL) && (dir_ace_list == NULL)) {
return True;
}
if (!acl_perms) {
DEBUG(3,("set_nt_acl: cannot set permissions\n"));
free_canon_ace_list(file_ace_list);
free_canon_ace_list(dir_ace_list);
return False;
}
if((security_info_sent & DACL_SECURITY_INFORMATION) && (psd->dacl != NULL)) {
BOOL acl_set_support = False;
BOOL ret = False;
if (acl_perms && file_ace_list) {
ret = set_canon_ace_list(fsp, file_ace_list, False, &acl_set_support);
if (acl_set_support && ret == False) {
DEBUG(3,("set_nt_acl: failed to set file acl on file %s (%s).\n", fsp->fsp_name, strerror(errno) ));
free_canon_ace_list(file_ace_list);
free_canon_ace_list(dir_ace_list);
return False;
}
}
if (acl_perms && acl_set_support && fsp->is_directory) {
if (dir_ace_list) {
if (!set_canon_ace_list(fsp, dir_ace_list, True, &acl_set_support)) {
DEBUG(3,("set_nt_acl: failed to set default acl on directory %s (%s).\n", fsp->fsp_name, strerror(errno) ));
free_canon_ace_list(file_ace_list);
free_canon_ace_list(dir_ace_list);
return False;
}
} else {
if (sys_acl_delete_def_file(dos_to_unix(fsp->fsp_name,False)) == -1) {
DEBUG(3,("set_nt_acl: sys_acl_delete_def_file failed (%s)\n", strerror(errno)));
free_canon_ace_list(file_ace_list);
return False;
}
}
}
if(!acl_set_support && acl_perms) {
mode_t posix_perms;
if (!convert_canon_ace_to_posix_perms( fsp, file_ace_list, &posix_perms)) {
free_canon_ace_list(file_ace_list);
free_canon_ace_list(dir_ace_list);
DEBUG(3,("set_nt_acl: failed to convert file acl to posix permissions for file %s.\n",
fsp->fsp_name ));
return False;
}
if (orig_mode != posix_perms) {
DEBUG(3,("set_nt_acl: chmod %s. perms = 0%o.\n",
fsp->fsp_name, (unsigned int)posix_perms ));
if(conn->vfs_ops.chmod(conn,dos_to_unix(fsp->fsp_name, False), posix_perms) == -1) {
DEBUG(3,("set_nt_acl: chmod %s, 0%o failed. Error = %s.\n",
fsp->fsp_name, (unsigned int)posix_perms, strerror(errno) ));
free_canon_ace_list(file_ace_list);
free_canon_ace_list(dir_ace_list);
return False;
}
}
}
}
free_canon_ace_list(file_ace_list);
free_canon_ace_list(dir_ace_list);
return True;
}
static int chmod_acl_internals( SMB_ACL_T posix_acl, mode_t mode)
{
int entry_id = SMB_ACL_FIRST_ENTRY;
SMB_ACL_ENTRY_T entry;
int num_entries = 0;
while ( sys_acl_get_entry(posix_acl, entry_id, &entry) == 1) {
SMB_ACL_TAG_T tagtype;
SMB_ACL_PERMSET_T permset;
mode_t perms;
if (entry_id == SMB_ACL_FIRST_ENTRY)
entry_id = SMB_ACL_NEXT_ENTRY;
if (sys_acl_get_tag_type(entry, &tagtype) == -1)
return -1;
if (sys_acl_get_permset(entry, &permset) == -1)
return -1;
num_entries++;
switch(tagtype) {
case SMB_ACL_USER_OBJ:
perms = unix_perms_to_acl_perms(mode, S_IRUSR, S_IWUSR, S_IXUSR);
break;
case SMB_ACL_GROUP_OBJ:
perms = unix_perms_to_acl_perms(mode, S_IRGRP, S_IWGRP, S_IXGRP);
break;
case SMB_ACL_MASK:
perms = S_IRUSR|S_IWUSR|S_IXUSR;
break;
case SMB_ACL_OTHER:
perms = unix_perms_to_acl_perms(mode, S_IROTH, S_IWOTH, S_IXOTH);
break;
default:
continue;
}
if (map_acl_perms_to_permset(perms, &permset) == -1)
return -1;
if (sys_acl_set_permset(entry, permset) == -1)
return -1;
}
if ((num_entries == 3) || (num_entries == 0))
return -1;
return 0;
}
int chmod_acl(const char *name, mode_t mode)
{
SMB_ACL_T posix_acl = NULL;
int ret = -1;
if ((posix_acl = sys_acl_get_file(name, SMB_ACL_TYPE_ACCESS)) == NULL)
return -1;
if ((ret = chmod_acl_internals(posix_acl, mode)) == -1)
goto done;
ret = sys_acl_set_file(name, SMB_ACL_TYPE_ACCESS, posix_acl);
done:
sys_acl_free_acl(posix_acl);
return ret;
}
int fchmod_acl(int fd, mode_t mode)
{
SMB_ACL_T posix_acl = NULL;
int ret = -1;
if ((posix_acl = sys_acl_get_fd(fd)) == NULL)
return -1;
if ((ret = chmod_acl_internals(posix_acl, mode)) == -1)
goto done;
ret = sys_acl_set_fd(fd, posix_acl);
done:
sys_acl_free_acl(posix_acl);
return ret;
}