bool pdb_set_group_sid(struct samu *sampass, const DOM_SID *g_sid, enum pdb_value_state flag)
{
gid_t gid;
if (!g_sid)
return False;
if ( !(sampass->group_sid = TALLOC_P( sampass, DOM_SID )) ) {
return False;
}
/* if we cannot resolve the SID to gid, then just ignore it and
store DOMAIN_USERS as the primary groupSID */
if ( sid_to_gid( g_sid, &gid ) ) {
sid_copy(sampass->group_sid, g_sid);
} else {
sid_compose(sampass->group_sid, get_global_sam_sid(),
DOMAIN_GROUP_RID_USERS);
}
DEBUG(10, ("pdb_set_group_sid: setting group sid %s\n",
sid_string_dbg(sampass->group_sid)));
return pdb_set_init_flags(sampass, PDB_GROUPSID, flag);
}
/**
* Turn SID into UID/GID and setup a struct ifs_identity
*/
static bool
onefs_sid_to_identity(const struct dom_sid *sid, struct ifs_identity *id,
bool is_group)
{
enum ifs_identity_type type = IFS_ID_TYPE_LAST+1;
uid_t uid = 0;
gid_t gid = 0;
if (!sid || sid_equal(sid, &global_sid_NULL))
type = IFS_ID_TYPE_NULL;
else if (sid_equal(sid, &global_sid_World))
type = IFS_ID_TYPE_EVERYONE;
else if (sid_equal(sid, &global_sid_Creator_Owner))
type = IFS_ID_TYPE_CREATOR_OWNER;
else if (sid_equal(sid, &global_sid_Creator_Group))
type = IFS_ID_TYPE_CREATOR_GROUP;
else if (is_group) {
if (!sid_to_gid(sid, &gid))
return false;
type = IFS_ID_TYPE_GID;
} else {
if (sid_to_uid(sid, &uid))
type = IFS_ID_TYPE_UID;
else if (sid_to_gid(sid, &gid))
type = IFS_ID_TYPE_GID;
else
return false;
}
if (aclu_initialize_identity(id, type, uid, gid, is_group)) {
DEBUG(3, ("Call to aclu_initialize_identity failed! id=%x, "
"type=%d, uid=%u, gid=%u, is_group=%d\n",
(unsigned int)id, type, uid, gid, is_group));
return false;
}
return true;
}
/**
* Create the requested BUILTIN if it doesn't already exist. This requires
* winbindd to be running.
*
* @param[in] rid BUILTIN rid to create
* @return Normal NTSTATUS return.
*/
static NTSTATUS create_builtin(uint32 rid)
{
NTSTATUS status = NT_STATUS_OK;
struct dom_sid sid;
gid_t gid;
if (!sid_compose(&sid, &global_sid_Builtin, rid)) {
return NT_STATUS_NO_SUCH_ALIAS;
}
if (!sid_to_gid(&sid, &gid)) {
if (!lp_winbind_nested_groups() || !winbind_ping()) {
return NT_STATUS_PROTOCOL_UNREACHABLE;
}
status = pdb_create_builtin_alias(rid);
}
return status;
}
static NTSTATUS find_forced_group(bool force_user,
int snum, const char *username,
DOM_SID *pgroup_sid,
gid_t *pgid)
{
NTSTATUS result = NT_STATUS_NO_SUCH_GROUP;
TALLOC_CTX *frame = talloc_stackframe();
DOM_SID group_sid;
enum lsa_SidType type;
char *groupname;
bool user_must_be_member = False;
gid_t gid;
groupname = talloc_strdup(talloc_tos(), lp_force_group(snum));
if (groupname == NULL) {
DEBUG(1, ("talloc_strdup failed\n"));
result = NT_STATUS_NO_MEMORY;
goto done;
}
if (groupname[0] == '+') {
user_must_be_member = True;
groupname += 1;
}
groupname = talloc_string_sub(talloc_tos(), groupname,
"%S", lp_servicename(snum));
if (groupname == NULL) {
DEBUG(1, ("talloc_string_sub failed\n"));
result = NT_STATUS_NO_MEMORY;
goto done;
}
if (!lookup_name_smbconf(talloc_tos(), groupname,
LOOKUP_NAME_ALL|LOOKUP_NAME_GROUP,
NULL, NULL, &group_sid, &type)) {
DEBUG(10, ("lookup_name_smbconf(%s) failed\n",
groupname));
goto done;
}
if ((type != SID_NAME_DOM_GRP) && (type != SID_NAME_ALIAS) &&
(type != SID_NAME_WKN_GRP)) {
DEBUG(10, ("%s is a %s, not a group\n", groupname,
sid_type_lookup(type)));
goto done;
}
if (!sid_to_gid(&group_sid, &gid)) {
DEBUG(10, ("sid_to_gid(%s) for %s failed\n",
sid_string_dbg(&group_sid), groupname));
goto done;
}
/*
* If the user has been forced and the forced group starts with a '+',
* then we only set the group to be the forced group if the forced
* user is a member of that group. Otherwise, the meaning of the '+'
* would be ignored.
*/
if (force_user && user_must_be_member) {
if (user_in_group_sid(username, &group_sid)) {
sid_copy(pgroup_sid, &group_sid);
*pgid = gid;
DEBUG(3,("Forced group %s for member %s\n",
groupname, username));
} else {
DEBUG(0,("find_forced_group: forced user %s is not a member "
"of forced group %s. Disallowing access.\n",
username, groupname ));
result = NT_STATUS_MEMBER_NOT_IN_GROUP;
goto done;
}
} else {
sid_copy(pgroup_sid, &group_sid);
*pgid = gid;
DEBUG(3,("Forced group %s\n", groupname));
}
result = NT_STATUS_OK;
done:
TALLOC_FREE(frame);
return result;
}
void add_supplementary_nt_login_groups(int *n_groups, gid_t **pp_groups, NT_USER_TOKEN **pptok)
{
int total_groups;
int current_n_groups = *n_groups;
gid_t *final_groups = NULL;
size_t i;
NT_USER_TOKEN *ptok = *pptok;
NT_USER_TOKEN *new_tok = NULL;
if (!ptok || (ptok->num_sids == 0))
return;
new_tok = dup_nt_token(ptok);
if (!new_tok) {
DEBUG(0,("add_supplementary_nt_login_groups: Failed to malloc new token\n"));
return;
}
/* Leave the allocated space but empty the number of SIDs. */
new_tok->num_sids = 0;
total_groups = current_n_groups + ptok->num_sids;
final_groups = (gid_t *)malloc(total_groups * sizeof(gid_t));
if (!final_groups) {
DEBUG(0,("add_supplementary_nt_login_groups: Failed to malloc new groups.\n"));
delete_nt_token(&new_tok);
return;
}
memcpy(final_groups, *pp_groups, current_n_groups * sizeof(gid_t));
for (i = 0; i < ptok->num_sids; i++) {
enum SID_NAME_USE sid_type;
gid_t new_grp;
if (sid_to_gid(&ptok->user_sids[i], &new_grp, &sid_type)) {
/*
* Don't add the gid_t if it is already in the current group
* list. Some UNIXen don't like the same group more than once.
*/
int j;
for (j = 0; j < current_n_groups; j++)
if (final_groups[j] == new_grp)
break;
if ( j == current_n_groups) {
/* Group not already present. */
final_groups[current_n_groups++] = new_grp;
}
} else {
/* SID didn't map. Copy to the new token to be saved. */
sid_copy(&new_tok->user_sids[new_tok->num_sids++], &ptok->user_sids[i]);
}
}
SAFE_FREE(*pp_groups);
*pp_groups = final_groups;
*n_groups = current_n_groups;
/* Replace the old token with the truncated one. */
delete_nt_token(&ptok);
*pptok = new_tok;
}
/*******************************************************************
gets a domain user's groups
********************************************************************/
NTSTATUS get_alias_user_groups(TALLOC_CTX *ctx, DOM_SID *sid, int *numgroups, uint32 **prids, DOM_SID *q_sid)
{
SAM_ACCOUNT *sam_pass=NULL;
int i, cur_rid=0;
gid_t gid;
gid_t *groups = NULL;
int num_groups;
GROUP_MAP map;
DOM_SID tmp_sid;
fstring user_name;
fstring str_domsid, str_qsid;
uint32 rid,grid;
uint32 *rids=NULL, *new_rids=NULL;
gid_t winbind_gid_low, winbind_gid_high;
BOOL ret;
BOOL winbind_groups_exist;
/*
* this code is far from perfect.
* first it enumerates the full /etc/group and that can be slow.
* second, it works only with users' SIDs
* whereas the day we support nested groups, it will have to
* support both users's SIDs and domain groups' SIDs
*
* having our own ldap backend would be so much faster !
* we're far from that, but hope one day ;-) JFM.
*/
*prids=NULL;
*numgroups=0;
winbind_groups_exist = lp_idmap_gid(&winbind_gid_low, &winbind_gid_high);
DEBUG(10,("get_alias_user_groups: looking if SID %s is a member of groups in the SID domain %s\n",
sid_to_string(str_qsid, q_sid), sid_to_string(str_domsid, sid)));
pdb_init_sam(&sam_pass);
become_root();
ret = pdb_getsampwsid(sam_pass, q_sid);
unbecome_root();
if (ret == False) {
pdb_free_sam(&sam_pass);
return NT_STATUS_NO_SUCH_USER;
}
fstrcpy(user_name, pdb_get_username(sam_pass));
grid=pdb_get_group_rid(sam_pass);
if (!NT_STATUS_IS_OK(sid_to_gid(pdb_get_group_sid(sam_pass), &gid))) {
/* this should never happen */
DEBUG(2,("get_alias_user_groups: sid_to_gid failed!\n"));
pdb_free_sam(&sam_pass);
return NT_STATUS_UNSUCCESSFUL;
}
become_root();
/* on some systems this must run as root */
num_groups = getgroups_user(user_name, &groups);
unbecome_root();
if (num_groups == -1) {
/* this should never happen */
DEBUG(2,("get_alias_user_groups: getgroups_user failed\n"));
pdb_free_sam(&sam_pass);
return NT_STATUS_UNSUCCESSFUL;
}
for (i=0;i<num_groups;i++) {
if (!get_group_from_gid(groups[i], &map)) {
DEBUG(10,("get_alias_user_groups: gid %d. not found\n", (int)groups[i]));
continue;
}
/* if it's not an alias, continue */
if (map.sid_name_use != SID_NAME_ALIAS) {
DEBUG(10,("get_alias_user_groups: not returing %s, not an ALIAS group.\n", map.nt_name));
continue;
}
sid_copy(&tmp_sid, &map.sid);
sid_split_rid(&tmp_sid, &rid);
/* if the sid is not in the correct domain, continue */
if (!sid_equal(&tmp_sid, sid)) {
DEBUG(10,("get_alias_user_groups: not returing %s, not in the domain SID.\n", map.nt_name));
continue;
}
/* Don't return winbind groups as they are not local! */
if (winbind_groups_exist && (groups[i] >= winbind_gid_low) && (groups[i] <= winbind_gid_high)) {
DEBUG(10,("get_alias_user_groups: not returing %s, not local.\n", map.nt_name));
continue;
}
/* Don't return user private groups... */
if (Get_Pwnam(map.nt_name) != 0) {
DEBUG(10,("get_alias_user_groups: not returing %s, clashes with user.\n", map.nt_name));
continue;
}
new_rids=(uint32 *)Realloc(rids, sizeof(uint32)*(cur_rid+1));
if (new_rids==NULL) {
DEBUG(10,("get_alias_user_groups: could not realloc memory\n"));
pdb_free_sam(&sam_pass);
free(groups);
return NT_STATUS_NO_MEMORY;
}
rids=new_rids;
sid_peek_rid(&map.sid, &(rids[cur_rid]));
cur_rid++;
break;
}
if(num_groups)
free(groups);
/* now check for the user's gid (the primary group rid) */
for (i=0; i<cur_rid && grid!=rids[i]; i++)
;
/* the user's gid is already there */
if (i!=cur_rid) {
DEBUG(10,("get_alias_user_groups: user is already in the list. good.\n"));
goto done;
}
DEBUG(10,("get_alias_user_groups: looking for gid %d of user %s\n", (int)gid, user_name));
if(!get_group_from_gid(gid, &map)) {
DEBUG(0,("get_alias_user_groups: gid of user %s doesn't exist. Check your "
"/etc/passwd and /etc/group files\n", user_name));
goto done;
}
/* the primary group isn't an alias */
if (map.sid_name_use!=SID_NAME_ALIAS) {
DEBUG(10,("get_alias_user_groups: not returing %s, not an ALIAS group.\n", map.nt_name));
goto done;
}
sid_copy(&tmp_sid, &map.sid);
sid_split_rid(&tmp_sid, &rid);
/* if the sid is not in the correct domain, continue */
if (!sid_equal(&tmp_sid, sid)) {
DEBUG(10,("get_alias_user_groups: not returing %s, not in the domain SID.\n", map.nt_name));
goto done;
}
/* Don't return winbind groups as they are not local! */
if (winbind_groups_exist && (gid >= winbind_gid_low) && (gid <= winbind_gid_high)) {
DEBUG(10,("get_alias_user_groups: not returing %s, not local.\n", map.nt_name ));
goto done;
}
/* Don't return user private groups... */
if (Get_Pwnam(map.nt_name) != 0) {
DEBUG(10,("get_alias_user_groups: not returing %s, clashes with user.\n", map.nt_name ));
goto done;
}
new_rids=(uint32 *)Realloc(rids, sizeof(uint32)*(cur_rid+1));
if (new_rids==NULL) {
DEBUG(10,("get_alias_user_groups: could not realloc memory\n"));
pdb_free_sam(&sam_pass);
return NT_STATUS_NO_MEMORY;
}
rids=new_rids;
sid_peek_rid(&map.sid, &(rids[cur_rid]));
cur_rid++;
done:
*prids=rids;
*numgroups=cur_rid;
pdb_free_sam(&sam_pass);
return NT_STATUS_OK;
}
static connection_struct *make_connection_snum(int snum, user_struct *vuser,
DATA_BLOB password,
const char *pdev,
NTSTATUS *status)
{
struct passwd *pass = NULL;
BOOL guest = False;
connection_struct *conn;
SMB_STRUCT_STAT st;
fstring user;
fstring dev;
int ret;
struct timespec atime_ts, mtime_ts, ctime_ts;
*user = 0;
fstrcpy(dev, pdev);
SET_STAT_INVALID(st);
if (NT_STATUS_IS_ERR(*status = share_sanity_checks(snum, dev))) {
return NULL;
}
conn = conn_new();
if (!conn) {
DEBUG(0,("Couldn't find free connection.\n"));
*status = NT_STATUS_INSUFFICIENT_RESOURCES;
return NULL;
}
conn->params->service = snum;
conn->nt_user_token = NULL;
if (lp_guest_only(snum)) {
const char *guestname = lp_guestaccount();
NTSTATUS status2;
char *found_username = NULL;
guest = True;
pass = getpwnam_alloc(NULL, guestname);
if (!pass) {
DEBUG(0,("make_connection_snum: Invalid guest "
"account %s??\n",guestname));
conn_free(conn);
*status = NT_STATUS_NO_SUCH_USER;
return NULL;
}
status2 = create_token_from_username(conn->mem_ctx, pass->pw_name, True,
&conn->uid, &conn->gid,
&found_username,
&conn->nt_user_token);
if (!NT_STATUS_IS_OK(status2)) {
TALLOC_FREE(pass);
conn_free(conn);
*status = status2;
return NULL;
}
fstrcpy(user, found_username);
string_set(&conn->user,user);
conn->force_user = True;
TALLOC_FREE(found_username);
TALLOC_FREE(pass);
DEBUG(3,("Guest only user %s\n",user));
} else if (vuser) {
if (vuser->guest) {
if (!lp_guest_ok(snum)) {
DEBUG(2, ("guest user (from session setup) "
"not permitted to access this share "
"(%s)\n", lp_servicename(snum)));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
}
} else {
if (!user_ok_token(vuser->user.unix_name,
vuser->nt_user_token, snum)) {
DEBUG(2, ("user '%s' (from session setup) not "
"permitted to access this share "
"(%s)\n", vuser->user.unix_name,
lp_servicename(snum)));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
}
}
conn->vuid = vuser->vuid;
conn->uid = vuser->uid;
conn->gid = vuser->gid;
string_set(&conn->user,vuser->user.unix_name);
fstrcpy(user,vuser->user.unix_name);
guest = vuser->guest;
} else if (lp_security() == SEC_SHARE) {
NTSTATUS status2;
char *found_username = NULL;
/* add it as a possible user name if we
are in share mode security */
add_session_user(lp_servicename(snum));
/* shall we let them in? */
if (!authorise_login(snum,user,password,&guest)) {
DEBUG( 2, ( "Invalid username/password for [%s]\n",
lp_servicename(snum)) );
conn_free(conn);
*status = NT_STATUS_WRONG_PASSWORD;
return NULL;
}
pass = Get_Pwnam(user);
status2 = create_token_from_username(conn->mem_ctx, pass->pw_name, True,
&conn->uid, &conn->gid,
&found_username,
&conn->nt_user_token);
if (!NT_STATUS_IS_OK(status2)) {
conn_free(conn);
*status = status2;
return NULL;
}
fstrcpy(user, found_username);
string_set(&conn->user,user);
TALLOC_FREE(found_username);
conn->force_user = True;
} else {
DEBUG(0, ("invalid VUID (vuser) but not in security=share\n"));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
}
add_session_user(user);
safe_strcpy(conn->client_address, client_addr(),
sizeof(conn->client_address)-1);
conn->num_files_open = 0;
conn->lastused = conn->lastused_count = time(NULL);
conn->used = True;
conn->printer = (strncmp(dev,"LPT",3) == 0);
conn->ipc = ( (strncmp(dev,"IPC",3) == 0) ||
( lp_enable_asu_support() && strequal(dev,"ADMIN$")) );
conn->dirptr = NULL;
/* Case options for the share. */
if (lp_casesensitive(snum) == Auto) {
/* We will be setting this per packet. Set to be case
* insensitive for now. */
conn->case_sensitive = False;
} else {
conn->case_sensitive = (BOOL)lp_casesensitive(snum);
}
conn->case_preserve = lp_preservecase(snum);
conn->short_case_preserve = lp_shortpreservecase(snum);
conn->veto_list = NULL;
conn->hide_list = NULL;
conn->veto_oplock_list = NULL;
conn->aio_write_behind_list = NULL;
string_set(&conn->dirpath,"");
string_set(&conn->user,user);
conn->read_only = lp_readonly(SNUM(conn));
conn->admin_user = False;
/*
* If force user is true, then store the given userid and the gid of
* the user we're forcing.
* For auxiliary groups see below.
*/
if (*lp_force_user(snum)) {
NTSTATUS status2;
status2 = find_forced_user(conn,
(vuser != NULL) && vuser->guest,
user);
if (!NT_STATUS_IS_OK(status2)) {
conn_free(conn);
*status = status2;
return NULL;
}
string_set(&conn->user,user);
conn->force_user = True;
DEBUG(3,("Forced user %s\n",user));
}
/*
* If force group is true, then override
* any groupid stored for the connecting user.
*/
if (*lp_force_group(snum)) {
NTSTATUS status2;
DOM_SID group_sid;
status2 = find_forced_group(conn->force_user,
snum, user,
&group_sid, &conn->gid);
if (!NT_STATUS_IS_OK(status2)) {
conn_free(conn);
*status = status2;
return NULL;
}
if ((conn->nt_user_token == NULL) && (vuser != NULL)) {
/* Not force user and not security=share, but force
* group. vuser has a token to copy */
conn->nt_user_token = dup_nt_token(
NULL, vuser->nt_user_token);
if (conn->nt_user_token == NULL) {
DEBUG(0, ("dup_nt_token failed\n"));
conn_free(conn);
*status = NT_STATUS_NO_MEMORY;
return NULL;
}
}
/* If conn->nt_user_token is still NULL, we have
* security=share. This means ignore the SID, as we had no
* vuser to copy from */
if (conn->nt_user_token != NULL) {
/* Overwrite the primary group sid */
sid_copy(&conn->nt_user_token->user_sids[1],
&group_sid);
}
conn->force_group = True;
}
if (conn->nt_user_token != NULL) {
size_t i;
/* We have a share-specific token from force [user|group].
* This means we have to create the list of unix groups from
* the list of sids. */
conn->ngroups = 0;
conn->groups = NULL;
for (i=0; i<conn->nt_user_token->num_sids; i++) {
gid_t gid;
DOM_SID *sid = &conn->nt_user_token->user_sids[i];
if (!sid_to_gid(sid, &gid)) {
DEBUG(10, ("Could not convert SID %s to gid, "
"ignoring it\n",
sid_string_static(sid)));
continue;
}
if (!add_gid_to_array_unique(conn->mem_ctx, gid, &conn->groups,
&conn->ngroups)) {
DEBUG(0, ("add_gid_to_array_unique failed\n"));
conn_free(conn);
*status = NT_STATUS_NO_MEMORY;
return NULL;
}
}
}
{
pstring s;
pstrcpy(s,lp_pathname(snum));
standard_sub_advanced(lp_servicename(SNUM(conn)), conn->user,
conn->connectpath, conn->gid,
get_current_username(),
current_user_info.domain,
s, sizeof(s));
if (s[0] == '\0') {
DEBUG(6, ("service [%s] did not resolve to a path\n",
lp_servicename(snum)));
conn_free(conn);
*status = NT_STATUS_BAD_NETWORK_NAME;
return NULL;
}
set_conn_connectpath(conn,s);
DEBUG(3,("Connect path is '%s' for service [%s]\n",s,
lp_servicename(snum)));
}
/*
* New code to check if there's a share security descripter
* added from NT server manager. This is done after the
* smb.conf checks are done as we need a uid and token. JRA.
*
*/
{
BOOL can_write = False;
NT_USER_TOKEN *token = conn->nt_user_token ?
conn->nt_user_token :
(vuser ? vuser->nt_user_token : NULL);
/*
* I don't believe this can happen. But the
* logic above is convoluted enough to confuse
* automated checkers, so be sure. JRA.
*/
if (token == NULL) {
DEBUG(0,("make_connection: connection to %s "
"denied due to missing "
"NT token.\n",
lp_servicename(snum)));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
}
can_write = share_access_check(token,
lp_servicename(snum),
FILE_WRITE_DATA);
if (!can_write) {
if (!share_access_check(token,
lp_servicename(snum),
FILE_READ_DATA)) {
/* No access, read or write. */
DEBUG(0,("make_connection: connection to %s "
"denied due to security "
"descriptor.\n",
lp_servicename(snum)));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
} else {
conn->read_only = True;
}
}
}
/* Initialise VFS function pointers */
if (!smbd_vfs_init(conn)) {
DEBUG(0, ("vfs_init failed for service %s\n",
lp_servicename(snum)));
conn_free(conn);
*status = NT_STATUS_BAD_NETWORK_NAME;
return NULL;
}
/*
* If widelinks are disallowed we need to canonicalise the connect
* path here to ensure we don't have any symlinks in the
* connectpath. We will be checking all paths on this connection are
* below this directory. We must do this after the VFS init as we
* depend on the realpath() pointer in the vfs table. JRA.
*/
if (!lp_widelinks(snum)) {
pstring s;
pstrcpy(s,conn->connectpath);
canonicalize_path(conn, s);
set_conn_connectpath(conn,s);
}
if ((!conn->printer) && (!conn->ipc)) {
conn->notify_ctx = notify_init(conn->mem_ctx, server_id_self(),
smbd_messaging_context(),
smbd_event_context(),
conn);
}
/* ROOT Activities: */
/* check number of connections */
if (!claim_connection(conn,
lp_servicename(snum),
lp_max_connections(snum),
False,0)) {
DEBUG(1,("too many connections - rejected\n"));
conn_free(conn);
*status = NT_STATUS_INSUFFICIENT_RESOURCES;
return NULL;
}
/* Preexecs are done here as they might make the dir we are to ChDir
* to below */
/* execute any "root preexec = " line */
if (*lp_rootpreexec(snum)) {
pstring cmd;
pstrcpy(cmd,lp_rootpreexec(snum));
standard_sub_advanced(lp_servicename(SNUM(conn)), conn->user,
conn->connectpath, conn->gid,
get_current_username(),
current_user_info.domain,
cmd, sizeof(cmd));
DEBUG(5,("cmd=%s\n",cmd));
ret = smbrun(cmd,NULL);
if (ret != 0 && lp_rootpreexec_close(snum)) {
DEBUG(1,("root preexec gave %d - failing "
"connection\n", ret));
yield_connection(conn, lp_servicename(snum));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
}
}
/* USER Activites: */
if (!change_to_user(conn, conn->vuid)) {
/* No point continuing if they fail the basic checks */
DEBUG(0,("Can't become connected user!\n"));
yield_connection(conn, lp_servicename(snum));
conn_free(conn);
*status = NT_STATUS_LOGON_FAILURE;
return NULL;
}
/* Remember that a different vuid can connect later without these
* checks... */
/* Preexecs are done here as they might make the dir we are to ChDir
* to below */
/* execute any "preexec = " line */
if (*lp_preexec(snum)) {
pstring cmd;
pstrcpy(cmd,lp_preexec(snum));
standard_sub_advanced(lp_servicename(SNUM(conn)), conn->user,
conn->connectpath, conn->gid,
get_current_username(),
current_user_info.domain,
cmd, sizeof(cmd));
ret = smbrun(cmd,NULL);
if (ret != 0 && lp_preexec_close(snum)) {
DEBUG(1,("preexec gave %d - failing connection\n",
ret));
change_to_root_user();
yield_connection(conn, lp_servicename(snum));
conn_free(conn);
*status = NT_STATUS_ACCESS_DENIED;
return NULL;
}
}
#ifdef WITH_FAKE_KASERVER
if (lp_afs_share(snum)) {
afs_login(conn);
}
#endif
/* Add veto/hide lists */
if (!IS_IPC(conn) && !IS_PRINT(conn)) {
set_namearray( &conn->veto_list, lp_veto_files(snum));
set_namearray( &conn->hide_list, lp_hide_files(snum));
set_namearray( &conn->veto_oplock_list, lp_veto_oplocks(snum));
}
/* Invoke VFS make connection hook - do this before the VFS_STAT call
to allow any filesystems needing user credentials to initialize
themselves. */
if (SMB_VFS_CONNECT(conn, lp_servicename(snum), user) < 0) {
DEBUG(0,("make_connection: VFS make connection failed!\n"));
change_to_root_user();
yield_connection(conn, lp_servicename(snum));
conn_free(conn);
*status = NT_STATUS_UNSUCCESSFUL;
return NULL;
}
/* win2000 does not check the permissions on the directory
during the tree connect, instead relying on permission
check during individual operations. To match this behaviour
I have disabled this chdir check (tridge) */
/* the alternative is just to check the directory exists */
if ((ret = SMB_VFS_STAT(conn, conn->connectpath, &st)) != 0 ||
!S_ISDIR(st.st_mode)) {
if (ret == 0 && !S_ISDIR(st.st_mode)) {
DEBUG(0,("'%s' is not a directory, when connecting to "
"[%s]\n", conn->connectpath,
lp_servicename(snum)));
} else {
DEBUG(0,("'%s' does not exist or permission denied "
"when connecting to [%s] Error was %s\n",
conn->connectpath, lp_servicename(snum),
strerror(errno) ));
}
change_to_root_user();
/* Call VFS disconnect hook */
SMB_VFS_DISCONNECT(conn);
yield_connection(conn, lp_servicename(snum));
conn_free(conn);
*status = NT_STATUS_BAD_NETWORK_NAME;
return NULL;
}
string_set(&conn->origpath,conn->connectpath);
mtime_ts = get_mtimespec(&st);
ctime_ts = get_ctimespec(&st);
atime_ts = get_atimespec(&st);
conn->ts_res = TIMESTAMP_SET_SECONDS;
if (mtime_ts.tv_nsec ||
atime_ts.tv_nsec ||
ctime_ts.tv_nsec) {
/* If any of the normal UNIX directory timestamps
* have a non-zero tv_nsec component assume
* we might be able to set sub-second timestamps.
* See what filetime set primitives we have.
*/
#if defined(HAVE_UTIMES)
/* utimes allows msec timestamps to be set. */
conn->ts_res = TIMESTAMP_SET_MSEC;
#elif defined(HAVE_UTIME)
/* utime only allows sec timestamps to be set. */
conn->ts_res = TIMESTAMP_SET_SECONDS;
#endif
/* TODO. Add a configure test for the Linux
* nsec timestamp set system call, and use it
* if available....
*/
DEBUG(10,("make_connection_snum: timestamp "
"resolution of %s "
"available on share %s, directory %s\n",
conn->ts_res == TIMESTAMP_SET_MSEC ? "msec" : "sec",
lp_servicename(conn->cnum),
conn->connectpath ));
}
#if SOFTLINK_OPTIMISATION
/* resolve any soft links early if possible */
if (vfs_ChDir(conn,conn->connectpath) == 0) {
pstring s;
pstrcpy(s,conn->connectpath);
vfs_GetWd(conn,s);
set_conn_connectpath(conn,s);
vfs_ChDir(conn,conn->connectpath);
}
#endif
if (lp_unix_extensions() && lp_widelinks(snum)) {
DEBUG(0,("Share '%s' has wide links and unix extensions enabled. "
"These parameters are incompatible. "
"Disabling wide links for this share.\n",
lp_servicename(snum) ));
lp_do_parameter(snum, "wide links", "False");
}
/*
* Print out the 'connected as' stuff here as we need
* to know the effective uid and gid we will be using
* (at least initially).
*/
if( DEBUGLVL( IS_IPC(conn) ? 3 : 1 ) ) {
dbgtext( "%s (%s) ", get_remote_machine_name(),
conn->client_address );
dbgtext( "%s", srv_is_signing_active() ? "signed " : "");
dbgtext( "connect to service %s ", lp_servicename(snum) );
dbgtext( "initially as user %s ", user );
dbgtext( "(uid=%d, gid=%d) ", (int)geteuid(), (int)getegid() );
dbgtext( "(pid %d)\n", (int)sys_getpid() );
}
/* we've finished with the user stuff - go back to root */
change_to_root_user();
return(conn);
}
static bool smbacl4_fill_ace4(
const struct smb_filename *filename,
smbacl4_vfs_params *params,
uid_t ownerUID,
gid_t ownerGID,
const struct security_ace *ace_nt, /* input */
SMB_ACE4PROP_T *ace_v4 /* output */
)
{
DEBUG(10, ("got ace for %s\n", sid_string_dbg(&ace_nt->trustee)));
memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
/* only ACCESS|DENY supported right now */
ace_v4->aceType = ace_nt->type;
ace_v4->aceFlags = map_windows_ace_flags_to_nfs4_ace_flags(
ace_nt->flags);
/* remove inheritance flags on files */
if (VALID_STAT(filename->st) &&
!S_ISDIR(filename->st.st_ex_mode)) {
DEBUG(10, ("Removing inheritance flags from a file\n"));
ace_v4->aceFlags &= ~(SMB_ACE4_FILE_INHERIT_ACE|
SMB_ACE4_DIRECTORY_INHERIT_ACE|
SMB_ACE4_NO_PROPAGATE_INHERIT_ACE|
SMB_ACE4_INHERIT_ONLY_ACE);
}
ace_v4->aceMask = ace_nt->access_mask &
(SEC_STD_ALL | SEC_FILE_ALL);
se_map_generic(&ace_v4->aceMask, &file_generic_mapping);
if (ace_v4->aceFlags!=ace_nt->flags)
DEBUG(9, ("ace_v4->aceFlags(0x%x)!=ace_nt->flags(0x%x)\n",
ace_v4->aceFlags, ace_nt->flags));
if (ace_v4->aceMask!=ace_nt->access_mask)
DEBUG(9, ("ace_v4->aceMask(0x%x)!=ace_nt->access_mask(0x%x)\n",
ace_v4->aceMask, ace_nt->access_mask));
if (dom_sid_equal(&ace_nt->trustee, &global_sid_World)) {
ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
} else if (params->mode!=e_special &&
dom_sid_equal(&ace_nt->trustee,
&global_sid_Creator_Owner)) {
DEBUG(10, ("Map creator owner\n"));
ace_v4->who.special_id = SMB_ACE4_WHO_OWNER;
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
/* A non inheriting creator owner entry has no effect. */
ace_v4->aceFlags |= SMB_ACE4_INHERIT_ONLY_ACE;
if (!(ace_v4->aceFlags & SMB_ACE4_DIRECTORY_INHERIT_ACE)
&& !(ace_v4->aceFlags & SMB_ACE4_FILE_INHERIT_ACE)) {
return false;
}
} else if (params->mode!=e_special &&
dom_sid_equal(&ace_nt->trustee,
&global_sid_Creator_Group)) {
DEBUG(10, ("Map creator owner group\n"));
ace_v4->who.special_id = SMB_ACE4_WHO_GROUP;
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
/* A non inheriting creator group entry has no effect. */
ace_v4->aceFlags |= SMB_ACE4_INHERIT_ONLY_ACE;
if (!(ace_v4->aceFlags & SMB_ACE4_DIRECTORY_INHERIT_ACE)
&& !(ace_v4->aceFlags & SMB_ACE4_FILE_INHERIT_ACE)) {
return false;
}
} else {
uid_t uid;
gid_t gid;
if (sid_to_gid(&ace_nt->trustee, &gid)) {
ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
ace_v4->who.gid = gid;
} else if (sid_to_uid(&ace_nt->trustee, &uid)) {
ace_v4->who.uid = uid;
} else {
DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
"convert %s to uid or gid\n",
filename->base_name,
sid_string_dbg(&ace_nt->trustee)));
return false;
}
}
return true; /* OK */
}
