/*
* Frees memories allocated for the passed account fields.
*/
void
smb_account_free(smb_account_t *account)
{
free(account->a_name);
free(account->a_domain);
smb_sid_free(account->a_sid);
smb_sid_free(account->a_domsid);
}
/*
* smb_sd_term
*
* Free non-NULL members of 'sd' which has to be in
* absolute (pointer) form.
*/
void
smb_sd_term(smb_sd_t *sd)
{
ASSERT(sd);
ASSERT((sd->sd_control & SE_SELF_RELATIVE) == 0);
smb_sid_free(sd->sd_owner);
smb_sid_free(sd->sd_group);
smb_acl_free(sd->sd_dacl);
smb_acl_free(sd->sd_sacl);
bzero(sd, sizeof (smb_sd_t));
}
void
smb_ids_free(smb_ids_t *ids)
{
smb_id_t *id;
int i;
if ((ids != NULL) && (ids->i_ids != NULL)) {
id = ids->i_ids;
for (i = 0; i < ids->i_cnt; i++, id++)
smb_sid_free(id->i_sid);
free(ids->i_ids);
}
}
/*
* Lookup local SMB user account database (/var/smb/smbpasswd)
* if there's a match query its SID from idmap service and make
* sure the SID is a local SID.
*
* The memory for the returned SID must be freed by the caller.
*/
static uint32_t
smb_sam_lookup_user(char *name, smb_sid_t **sid)
{
smb_passwd_t smbpw;
if (smb_pwd_getpwnam(name, &smbpw) == NULL)
return (NT_STATUS_NO_SUCH_USER);
if (smb_idmap_getsid(smbpw.pw_uid, SMB_IDMAP_USER, sid)
!= IDMAP_SUCCESS)
return (NT_STATUS_NONE_MAPPED);
if (!smb_sid_islocal(*sid)) {
smb_sid_free(*sid);
return (NT_STATUS_NONE_MAPPED);
}
return (NT_STATUS_SUCCESS);
}
void
smb_acl_free(smb_acl_t *acl)
{
int i, size;
void *ace;
if (acl == NULL)
return;
for (i = 0; i < acl->sl_acecnt; i++)
smb_sid_free(acl->sl_aces[i].se_sid);
while ((ace = list_head(&acl->sl_sorted)) != NULL)
list_remove(&acl->sl_sorted, ace);
list_destroy(&acl->sl_sorted);
size = sizeof (smb_acl_t) + (acl->sl_acecnt * sizeof (smb_ace_t));
kmem_free(acl, size);
}
/*
* Updates a list of groups in which the given user is a member
* by adding any local (SAM) groups.
*
* We are a member of local groups where the local group
* contains either the user's primary SID, or any of their
* other SIDs such as from domain groups, SID history, etc.
* We can have indirect membership via domain groups.
*/
uint32_t
smb_sam_usr_groups(smb_sid_t *user_sid, smb_ids_t *gids)
{
smb_ids_t new_gids;
smb_id_t *ids, *new_ids;
smb_giter_t gi;
smb_group_t lgrp;
int i, gcnt, total_cnt;
uint32_t ret;
boolean_t member;
/*
* First pass: count groups to be added (gcnt)
*/
gcnt = 0;
if (smb_lgrp_iteropen(&gi) != SMB_LGRP_SUCCESS)
return (NT_STATUS_INTERNAL_ERROR);
while (smb_lgrp_iterate(&gi, &lgrp) == SMB_LGRP_SUCCESS) {
member = B_FALSE;
if (smb_lgrp_is_member(&lgrp, user_sid))
member = B_TRUE;
else for (i = 0, ids = gids->i_ids;
i < gids->i_cnt; i++, ids++) {
if (smb_lgrp_is_member(&lgrp, ids->i_sid)) {
member = B_TRUE;
break;
}
}
/* Careful: only count lgrp once */
if (member)
gcnt++;
smb_lgrp_free(&lgrp);
}
smb_lgrp_iterclose(&gi);
if (gcnt == 0)
return (NT_STATUS_SUCCESS);
/*
* Second pass: add to groups list.
* Do not modify gcnt after here.
*/
if (smb_lgrp_iteropen(&gi) != SMB_LGRP_SUCCESS)
return (NT_STATUS_INTERNAL_ERROR);
/*
* Expand the list (copy to a new, larger one)
* Note: were're copying pointers from the old
* array to the new (larger) array, and then
* adding new pointers after what we copied.
*/
ret = 0;
new_gids.i_cnt = gids->i_cnt;
total_cnt = gids->i_cnt + gcnt;
new_gids.i_ids = malloc(total_cnt * sizeof (smb_id_t));
if (new_gids.i_ids == NULL) {
ret = NT_STATUS_NO_MEMORY;
goto out;
}
(void) memcpy(new_gids.i_ids, gids->i_ids,
gids->i_cnt * sizeof (smb_id_t));
new_ids = new_gids.i_ids + gids->i_cnt;
(void) memset(new_ids, 0, gcnt * sizeof (smb_id_t));
/*
* Add group SIDs starting at the end of the
* previous list. (new_ids)
*/
while (smb_lgrp_iterate(&gi, &lgrp) == SMB_LGRP_SUCCESS) {
member = B_FALSE;
if (smb_lgrp_is_member(&lgrp, user_sid))
member = B_TRUE;
else for (i = 0, ids = gids->i_ids;
i < gids->i_cnt; i++, ids++) {
if (smb_lgrp_is_member(&lgrp, ids->i_sid)) {
member = B_TRUE;
break;
}
}
if (member && (new_gids.i_cnt < (gids->i_cnt + gcnt))) {
new_ids->i_sid = smb_sid_dup(lgrp.sg_id.gs_sid);
if (new_ids->i_sid == NULL) {
smb_lgrp_free(&lgrp);
ret = NT_STATUS_NO_MEMORY;
goto out;
}
new_ids->i_attrs = lgrp.sg_attr;
new_ids++;
new_gids.i_cnt++;
}
smb_lgrp_free(&lgrp);
}
out:
smb_lgrp_iterclose(&gi);
if (ret != 0) {
if (new_gids.i_ids != NULL) {
/*
* Free only the new sids we added.
* The old ones were copied ptrs.
*/
ids = new_gids.i_ids + gids->i_cnt;
for (i = 0; i < gcnt; i++, ids++) {
smb_sid_free(ids->i_sid);
}
free(new_gids.i_ids);
}
return (ret);
}
/*
* Success! Update passed gids and
* free the old array.
*/
free(gids->i_ids);
*gids = new_gids;
return (NT_STATUS_SUCCESS);
}
/*
* smb_lucache_do_update
*
* This function takes care of updating the AVL tree.
* If an entry has been updated, it'll be modified in place.
*
* New entries will be added to a temporary AVL tree then
* passwod file is unlocked and all the new entries will
* be transferred to the main cache from the temporary tree.
*
* This function MUST NOT be called directly
*/
static int
smb_lucache_do_update(void)
{
avl_tree_t tmp_cache;
smb_pwbuf_t pwbuf;
smb_passwd_t smbpw;
smb_ucnode_t uc_node;
smb_ucnode_t *uc_newnode;
smb_luser_t *user;
smb_sid_t *sid;
idmap_stat idm_stat;
int rc = SMB_PWE_SUCCESS;
void *cookie = NULL;
FILE *fp;
if ((rc = smb_pwd_lock()) != SMB_PWE_SUCCESS) {
syslog(LOG_WARNING, "smb_pwdutil: lock failed, err=%d", rc);
return (rc);
}
if ((fp = fopen(SMB_PASSWD, "rF")) == NULL) {
syslog(LOG_WARNING, "smb_pwdutil: open failed, %m");
(void) smb_pwd_unlock();
return (SMB_PWE_OPEN_FAILED);
}
avl_create(&tmp_cache, smb_lucache_cmp,
sizeof (smb_ucnode_t), offsetof(smb_ucnode_t, cn_link));
bzero(&pwbuf, sizeof (smb_pwbuf_t));
pwbuf.pw_pwd = &smbpw;
(void) rw_rdlock(&smb_uch.uc_cache_lck);
while (smb_pwd_fgetent(fp, &pwbuf, SMB_PWD_GETF_NOPWD) != NULL) {
uc_node.cn_user.su_name = smbpw.pw_name;
uc_newnode = avl_find(&smb_uch.uc_cache, &uc_node, NULL);
if (uc_newnode) {
/* update the node info */
uc_newnode->cn_user.su_ctrl = smbpw.pw_flags;
continue;
}
/* create a new node */
if ((uc_newnode = malloc(sizeof (smb_ucnode_t))) == NULL) {
rc = SMB_PWE_NO_MEMORY;
break;
}
bzero(uc_newnode, sizeof (smb_ucnode_t));
user = &uc_newnode->cn_user;
user->su_ctrl = smbpw.pw_flags;
idm_stat = smb_idmap_getsid(smbpw.pw_uid, SMB_IDMAP_USER, &sid);
if (idm_stat != IDMAP_SUCCESS) {
syslog(LOG_WARNING, "smb_pwdutil: couldn't obtain SID "
"for uid=%u (%d)", smbpw.pw_uid, idm_stat);
free(uc_newnode);
continue;
}
(void) smb_sid_getrid(sid, &user->su_rid);
smb_sid_free(sid);
user->su_name = strdup(smbpw.pw_name);
if (user->su_name == NULL) {
rc = SMB_PWE_NO_MEMORY;
free(uc_newnode);
break;
}
avl_add(&tmp_cache, uc_newnode);
}
(void) rw_unlock(&smb_uch.uc_cache_lck);
(void) fclose(fp);
(void) smb_pwd_unlock();
/* Destroy the temporary list */
(void) rw_wrlock(&smb_uch.uc_cache_lck);
while ((uc_newnode = avl_destroy_nodes(&tmp_cache, &cookie)) != NULL) {
avl_add(&smb_uch.uc_cache, uc_newnode);
}
(void) rw_unlock(&smb_uch.uc_cache_lck);
avl_destroy(&tmp_cache);
return (rc);
}
/*
* smbadm_group_delmember
*/
static int
smbadm_group_delmember(int argc, char **argv)
{
lsa_account_t acct;
char *gname = NULL;
char **mname;
char option;
smb_gsid_t msid;
int status;
int mcnt = 0;
int ret = 0;
int i;
mname = (char **)malloc(argc * sizeof (char *));
if (mname == NULL) {
warn(gettext("failed to delete group member"));
return (1);
}
bzero(mname, argc * sizeof (char *));
while ((option = getopt(argc, argv, "m:")) != -1) {
switch (option) {
case 'm':
mname[mcnt++] = optarg;
break;
default:
free(mname);
smbadm_usage(B_FALSE);
}
}
if (mcnt == 0) {
(void) fprintf(stderr, gettext("missing member name\n"));
free(mname);
smbadm_usage(B_FALSE);
}
gname = argv[optind];
if (optind >= argc || gname == NULL || *gname == 0) {
(void) fprintf(stderr, gettext("missing group name\n"));
free(mname);
smbadm_usage(B_FALSE);
}
for (i = 0; i < mcnt; i++) {
ret = 0;
if (mname[i] == NULL)
continue;
ret = smb_lookup_name(mname[i], SidTypeUnknown, &acct);
if ((ret != 0) || (acct.a_status != NT_STATUS_SUCCESS)) {
(void) fprintf(stderr,
gettext("failed to remove %s: "
"unable to obtain SID\n"),
mname[i]);
continue;
}
msid.gs_type = acct.a_sidtype;
if ((msid.gs_sid = smb_sid_fromstr(acct.a_sid)) == NULL) {
(void) fprintf(stderr,
gettext("failed to remove %s: no memory\n"),
mname[i]);
continue;
}
status = smb_lgrp_del_member(gname, msid.gs_sid, msid.gs_type);
smb_sid_free(msid.gs_sid);
if (status != SMB_LGRP_SUCCESS) {
(void) fprintf(stderr,
gettext("failed to remove %s (%s)\n"),
mname[i], smb_lgrp_strerror(status));
ret = 1;
} else {
(void) printf(
gettext("'%s' has been removed from %s\n"),
mname[i], gname);
}
}
return (ret);
}
