/*
form a security_unix_token from the current security_token
*/
NTSTATUS security_token_to_unix_token(TALLOC_CTX *mem_ctx,
struct wbc_context *wbc_ctx,
struct security_token *token,
struct security_unix_token **sec)
{
uint32_t s, g;
NTSTATUS status;
struct id_map *ids;
struct composite_context *ctx;
/* we can't do unix security without a user and group */
if (token->num_sids < 2) {
return NT_STATUS_ACCESS_DENIED;
}
*sec = talloc_zero(mem_ctx, struct security_unix_token);
if (*sec == NULL) {
return NT_STATUS_NO_MEMORY;
}
ids = talloc_zero_array(mem_ctx, struct id_map, token->num_sids);
NT_STATUS_HAVE_NO_MEMORY(ids);
for (s=0; s < token->num_sids; s++) {
ids[s].sid = &token->sids[s];
ids[s].status = ID_UNKNOWN;
}
ctx = wbc_sids_to_xids_send(wbc_ctx, ids, token->num_sids, ids);
NT_STATUS_HAVE_NO_MEMORY(ctx);
status = wbc_sids_to_xids_recv(ctx, &ids);
NT_STATUS_NOT_OK_RETURN(status);
g = token->num_sids;
if (ids[0].xid.type != ID_TYPE_BOTH) {
g--;
}
(*sec)->ngroups = g;
(*sec)->groups = talloc_array(*sec, gid_t, (*sec)->ngroups);
NT_STATUS_HAVE_NO_MEMORY((*sec)->groups);
g=0;
if (ids[0].xid.type == ID_TYPE_BOTH) {
(*sec)->uid = ids[0].xid.id;
(*sec)->groups[g] = ids[0].xid.id;
g++;
} else if (ids[0].xid.type == ID_TYPE_UID) {
(*sec)->uid = ids[0].xid.id;
} else {
char *sid_str = dom_sid_string(mem_ctx, ids[0].sid);
DEBUG(0, ("Unable to convert first SID (%s) in user token to a UID. Conversion was returned as type %d, full token:\n",
sid_str, (int)ids[0].xid.type));
security_token_debug(0, 0, token);
talloc_free(sid_str);
return NT_STATUS_INVALID_SID;
}
if (ids[1].xid.type == ID_TYPE_BOTH ||
ids[1].xid.type == ID_TYPE_GID) {
(*sec)->gid = ids[1].xid.id;
(*sec)->groups[g] = ids[1].xid.id;
g++;
} else {
char *sid_str = dom_sid_string(mem_ctx, ids[1].sid);
DEBUG(0, ("Unable to convert second SID (%s) in user token to a GID. Conversion was returned as type %d, full token:\n",
sid_str, (int)ids[1].xid.type));
security_token_debug(0, 0, token);
talloc_free(sid_str);
return NT_STATUS_INVALID_SID;
}
for (s=2; s < token->num_sids; s++) {
if (ids[s].xid.type == ID_TYPE_BOTH ||
ids[s].xid.type == ID_TYPE_GID) {
(*sec)->groups[g] = ids[s].xid.id;
g++;
} else {
char *sid_str = dom_sid_string(mem_ctx, ids[s].sid);
DEBUG(0, ("Unable to convert SID (%s) at index %u in user token to a GID. Conversion was returned as type %d, full token:\n",
sid_str, (unsigned int)s, (int)ids[s].xid.type));
security_token_debug(0, 0, token);
talloc_free(sid_str);
return NT_STATUS_INVALID_SID;
}
}
DEBUG(5, ("Successfully converted security token to a unix token:"));
security_token_debug(0, 5, token);
TALLOC_FREE(ids);
return NT_STATUS_OK;
}
/*
save the acl for a file into system.nfs4acl
*/
static NTSTATUS pvfs_acl_save_nfs4(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd,
struct security_descriptor *sd)
{
NTSTATUS status;
void *privs;
struct nfs4acl acl;
int i;
TALLOC_CTX *tmp_ctx;
struct id_map *ids;
struct composite_context *ctx;
tmp_ctx = talloc_new(pvfs);
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
acl.a_version = 0;
acl.a_flags = sd->type;
acl.a_count = sd->dacl?sd->dacl->num_aces:0;
acl.a_owner_mask = 0;
acl.a_group_mask = 0;
acl.a_other_mask = 0;
acl.ace = talloc_array(tmp_ctx, struct nfs4ace, acl.a_count);
if (!acl.ace) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
ids = talloc_array(tmp_ctx, struct id_map, acl.a_count);
if (ids == NULL) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
for (i=0;i<acl.a_count;i++) {
struct security_ace *ace = &sd->dacl->aces[i];
ZERO_STRUCT(ids[i].xid);
ids[i].sid = dom_sid_dup(ids, &ace->trustee);
if (ids[i].sid == NULL) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
ids[i].status = ID_UNKNOWN;
}
ctx = wbc_sids_to_xids_send(pvfs->wbc_ctx,ids, acl.a_count, ids);
if (ctx == NULL) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
status = wbc_sids_to_xids_recv(ctx, &ids);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return status;
}
for (i=0;i<acl.a_count;i++) {
struct nfs4ace *a = &acl.ace[i];
struct security_ace *ace = &sd->dacl->aces[i];
a->e_type = ace->type;
a->e_flags = ace->flags;
a->e_mask = ace->access_mask;
if (ids[i].xid.type != ID_TYPE_UID) {
a->e_flags |= ACE4_IDENTIFIER_GROUP;
}
a->e_id = ids[i].xid.id;
a->e_who = "";
}
privs = root_privileges();
status = pvfs_xattr_ndr_save(pvfs, name->full_name, fd,
NFS4ACL_XATTR_NAME,
&acl, (void *) ndr_push_nfs4acl);
talloc_free(privs);
talloc_free(tmp_ctx);
return status;
}
/*
form a security_unix_token from the current security_token
*/
NTSTATUS security_token_to_unix_token(TALLOC_CTX *mem_ctx,
struct wbc_context *wbc_ctx,
struct security_token *token,
struct security_unix_token **sec)
{
int i;
NTSTATUS status;
struct id_map *ids;
struct composite_context *ctx;
*sec = talloc(mem_ctx, struct security_unix_token);
/* we can't do unix security without a user and group */
if (token->num_sids < 2) {
return NT_STATUS_ACCESS_DENIED;
}
ids = talloc_array(mem_ctx, struct id_map, token->num_sids);
NT_STATUS_HAVE_NO_MEMORY(ids);
(*sec)->ngroups = token->num_sids - 2;
(*sec)->groups = talloc_array(*sec, gid_t, (*sec)->ngroups);
NT_STATUS_HAVE_NO_MEMORY((*sec)->groups);
for (i=0;i<token->num_sids;i++) {
ZERO_STRUCT(ids[i].xid);
ids[i].sid = &token->sids[i];
ids[i].status = ID_UNKNOWN;
}
ctx = wbc_sids_to_xids_send(wbc_ctx, ids, token->num_sids, ids);
NT_STATUS_HAVE_NO_MEMORY(ctx);
status = wbc_sids_to_xids_recv(ctx, &ids);
NT_STATUS_NOT_OK_RETURN(status);
if (ids[0].xid.type == ID_TYPE_BOTH ||
ids[0].xid.type == ID_TYPE_UID) {
(*sec)->uid = ids[0].xid.id;
} else {
return NT_STATUS_INVALID_SID;
}
if (ids[1].xid.type == ID_TYPE_BOTH ||
ids[1].xid.type == ID_TYPE_GID) {
(*sec)->gid = ids[1].xid.id;
} else {
return NT_STATUS_INVALID_SID;
}
for (i=0;i<(*sec)->ngroups;i++) {
if (ids[i+2].xid.type == ID_TYPE_BOTH ||
ids[i+2].xid.type == ID_TYPE_GID) {
(*sec)->groups[i] = ids[i+2].xid.id;
} else {
return NT_STATUS_INVALID_SID;
}
}
TALLOC_FREE(ids);
return NT_STATUS_OK;
}