/*
Unix SMB/CIFS implementation.
Async helpers for blocking functions
Copyright (C) Volker Lendecke 2005
Copyright (C) Gerald Carter 2006
The helpers always consist of three functions:
* A request setup function that takes the necessary parameters together
with a continuation function that is to be called upon completion
* A private continuation function that is internal only. This is to be
called by the lower-level functions in do_async(). Its only task is to
properly call the continuation function named above.
* A worker function that is called inside the appropriate child process.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#include "includes.h"
#include "winbindd.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND
struct do_async_state {
TALLOC_CTX *mem_ctx;
struct winbindd_request request;
struct winbindd_response response;
void (*cont)(TALLOC_CTX *mem_ctx,
bool success,
struct winbindd_response *response,
void *c, void *private_data);
void *c, *private_data;
};
static void do_async_recv(void *private_data, bool success)
{
struct do_async_state *state =
talloc_get_type_abort(private_data, struct do_async_state);
state->cont(state->mem_ctx, success, &state->response,
state->c, state->private_data);
}
void do_async(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
const struct winbindd_request *request,
void (*cont)(TALLOC_CTX *mem_ctx, bool success,
struct winbindd_response *response,
void *c, void *private_data),
void *c, void *private_data)
{
struct do_async_state *state;
state = TALLOC_ZERO_P(mem_ctx, struct do_async_state);
if (state == NULL) {
DEBUG(0, ("talloc failed\n"));
cont(mem_ctx, False, NULL, c, private_data);
return;
}
state->mem_ctx = mem_ctx;
state->request = *request;
state->request.length = sizeof(state->request);
state->cont = cont;
state->c = c;
state->private_data = private_data;
async_request(mem_ctx, child, &state->request,
&state->response, do_async_recv, state);
}
static void do_async_domain(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
const struct winbindd_request *request,
void (*cont)(TALLOC_CTX *mem_ctx, bool success,
struct winbindd_response *response,
void *c, void *private_data),
void *c, void *private_data)
{
struct do_async_state *state;
state = TALLOC_ZERO_P(mem_ctx, struct do_async_state);
if (state == NULL) {
DEBUG(0, ("talloc failed\n"));
cont(mem_ctx, False, NULL, c, private_data);
return;
}
state->mem_ctx = mem_ctx;
state->request = *request;
state->request.length = sizeof(state->request);
state->cont = cont;
state->c = c;
state->private_data = private_data;
async_domain_request(mem_ctx, domain, &state->request,
&state->response, do_async_recv, state);
}
enum winbindd_result winbindd_dual_lookupsid(struct winbindd_domain *domain,
struct winbindd_cli_state *state)
{
enum lsa_SidType type;
DOM_SID sid;
char *name;
char *dom_name;
/* Ensure null termination */
state->request->data.sid[sizeof(state->request->data.sid)-1]='\0';
DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
state->request->data.sid));
/* Lookup sid from PDC using lsa_lookup_sids() */
if (!string_to_sid(&sid, state->request->data.sid)) {
DEBUG(5, ("%s not a SID\n", state->request->data.sid));
return WINBINDD_ERROR;
}
/* Lookup the sid */
if (!winbindd_lookup_name_by_sid(state->mem_ctx, domain, &sid,
&dom_name, &name, &type))
{
TALLOC_FREE(dom_name);
TALLOC_FREE(name);
return WINBINDD_ERROR;
}
fstrcpy(state->response->data.name.dom_name, dom_name);
fstrcpy(state->response->data.name.name, name);
state->response->data.name.type = type;
TALLOC_FREE(dom_name);
TALLOC_FREE(name);
return WINBINDD_OK;
}
enum winbindd_result winbindd_dual_lookupname(struct winbindd_domain *domain,
struct winbindd_cli_state *state)
{
enum lsa_SidType type;
char *name_domain, *name_user;
DOM_SID sid;
char *p;
/* Ensure null termination */
state->request->data.name.dom_name[sizeof(state->request->data.name.dom_name)-1]='\0';
/* Ensure null termination */
state->request->data.name.name[sizeof(state->request->data.name.name)-1]='\0';
/* cope with the name being a fully qualified name */
p = strstr(state->request->data.name.name, lp_winbind_separator());
if (p) {
*p = 0;
name_domain = state->request->data.name.name;
name_user = p+1;
} else {
name_domain = state->request->data.name.dom_name;
name_user = state->request->data.name.name;
}
DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
name_domain, lp_winbind_separator(), name_user));
/* Lookup name from DC using lsa_lookup_names() */
if (!winbindd_lookup_sid_by_name(state->mem_ctx, state->request->original_cmd, domain, name_domain,
name_user, &sid, &type)) {
return WINBINDD_ERROR;
}
sid_to_fstring(state->response->data.sid.sid, &sid);
state->response->data.sid.type = type;
return WINBINDD_OK;
}
bool print_sidlist(TALLOC_CTX *mem_ctx, const DOM_SID *sids,
size_t num_sids, char **result, ssize_t *len)
{
size_t i;
size_t buflen = 0;
*len = 0;
*result = NULL;
for (i=0; i= sizeof(tmp)-1) {
return false;
}
memcpy(tmp, p, sidlen);
tmp[sidlen] = '\0';
q += 1;
if (!string_to_sid(&sid, tmp)) {
DEBUG(0, ("Could not parse sid %s\n", p));
return False;
}
if (!NT_STATUS_IS_OK(add_sid_to_array(mem_ctx, &sid, sids,
num_sids)))
{
return False;
}
p = q;
}
return True;
}
static void getsidaliases_recv(TALLOC_CTX *mem_ctx, bool success,
struct winbindd_response *response,
void *c, void *private_data)
{
void (*cont)(void *priv, bool succ,
DOM_SID *aliases, size_t num_aliases) =
(void (*)(void *, bool, DOM_SID *, size_t))c;
char *aliases_str;
DOM_SID *sids = NULL;
size_t num_sids = 0;
if (!success) {
DEBUG(5, ("Could not trigger getsidaliases\n"));
cont(private_data, success, NULL, 0);
return;
}
if (response->result != WINBINDD_OK) {
DEBUG(5, ("getsidaliases returned an error\n"));
cont(private_data, False, NULL, 0);
return;
}
aliases_str = (char *)response->extra_data.data;
if (aliases_str == NULL) {
DEBUG(10, ("getsidaliases return 0 SIDs\n"));
cont(private_data, True, NULL, 0);
return;
}
if (!parse_sidlist(mem_ctx, aliases_str, &sids, &num_sids)) {
DEBUG(0, ("Could not parse sids\n"));
cont(private_data, False, NULL, 0);
return;
}
cont(private_data, True, sids, num_sids);
}
void winbindd_getsidaliases_async(struct winbindd_domain *domain,
TALLOC_CTX *mem_ctx,
const DOM_SID *sids, size_t num_sids,
void (*cont)(void *private_data,
bool success,
const DOM_SID *aliases,
size_t num_aliases),
void *private_data)
{
struct winbindd_request request;
char *sidstr = NULL;
ssize_t len;
if (num_sids == 0) {
cont(private_data, True, NULL, 0);
return;
}
if (!print_sidlist(mem_ctx, sids, num_sids, &sidstr, &len)) {
cont(private_data, False, NULL, 0);
return;
}
ZERO_STRUCT(request);
request.cmd = WINBINDD_DUAL_GETSIDALIASES;
request.extra_len = len;
request.extra_data.data = sidstr;
do_async_domain(mem_ctx, domain, &request, getsidaliases_recv,
(void *)cont, private_data);
}
static void query_user_recv(TALLOC_CTX *mem_ctx, bool success,
struct winbindd_response *response,
void *c, void *private_data)
{
void (*cont)(void *priv, bool succ, const char *acct_name,
const char *full_name, const char *homedir,
const char *shell, uint32 gid, uint32 group_rid) =
(void (*)(void *, bool, const char *, const char *,
const char *, const char *, uint32, uint32))c;
if (!success) {
DEBUG(5, ("Could not trigger query_user\n"));
cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
return;
}
if (response->result != WINBINDD_OK) {
DEBUG(5, ("query_user returned an error\n"));
cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
return;
}
cont(private_data, True, response->data.user_info.acct_name,
response->data.user_info.full_name,
response->data.user_info.homedir,
response->data.user_info.shell,
response->data.user_info.primary_gid,
response->data.user_info.group_rid);
}
void query_user_async(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
const DOM_SID *sid,
void (*cont)(void *private_data, bool success,
const char *acct_name,
const char *full_name,
const char *homedir,
const char *shell,
gid_t gid,
uint32 group_rid),
void *private_data)
{
struct winbindd_request request;
ZERO_STRUCT(request);
request.cmd = WINBINDD_DUAL_USERINFO;
sid_to_fstring(request.data.sid, sid);
do_async_domain(mem_ctx, domain, &request, query_user_recv,
(void *)cont, private_data);
}
enum winbindd_result winbindd_dual_ping(struct winbindd_domain *domain,
struct winbindd_cli_state *state)
{
return WINBINDD_OK;
}