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/*
Unix SMB/CIFS implementation.
Winbind client library.
Copyright (C) 2008 Kai Blin <kai@samba.org>
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 <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include <tevent.h>
#include "libcli/wbclient/wbclient.h"
#include "nsswitch/wb_reqtrans.h"
#include "system/network.h"
#include "libcli/util/error.h"
#include "libcli/security/dom_sid.h"
/**
* Initialize the wbclient context, talloc_free() when done.
*
* \param mem_ctx talloc context to allocate memory from
* \param msg_ctx message context to use
* \param
*/
struct wbc_context *wbc_init(TALLOC_CTX *mem_ctx,
struct imessaging_context *msg_ctx,
struct tevent_context *event_ctx)
{
struct wbc_context *ctx;
ctx = talloc(mem_ctx, struct wbc_context);
if (ctx == NULL) return NULL;
ctx->event_ctx = event_ctx;
ctx->irpc_handle = irpc_binding_handle_by_name(ctx, msg_ctx,
"winbind_server",
&ndr_table_winbind);
if (ctx->irpc_handle == NULL) {
talloc_free(ctx);
return NULL;
}
return ctx;
}
struct wbc_idmap_state {
struct composite_context *ctx;
struct winbind_get_idmap *req;
struct id_map *ids;
};
static void sids_to_xids_recv_ids(struct tevent_req *subreq);
struct composite_context *wbc_sids_to_xids_send(struct wbc_context *wbc_ctx,
TALLOC_CTX *mem_ctx,
uint32_t count,
struct id_map *ids)
{
struct composite_context *ctx;
struct wbc_idmap_state *state;
struct tevent_req *subreq;
DEBUG(5, ("wbc_sids_to_xids called\n"));
ctx = composite_create(mem_ctx, wbc_ctx->event_ctx);
if (ctx == NULL) return NULL;
state = talloc(ctx, struct wbc_idmap_state);
if (composite_nomem(state, ctx)) return ctx;
ctx->private_data = state;
state->req = talloc(state, struct winbind_get_idmap);
if (composite_nomem(state->req, ctx)) return ctx;
state->req->in.count = count;
state->req->in.level = WINBIND_IDMAP_LEVEL_SIDS_TO_XIDS;
state->req->in.ids = ids;
state->ctx = ctx;
subreq = dcerpc_winbind_get_idmap_r_send(state,
wbc_ctx->event_ctx,
wbc_ctx->irpc_handle,
state->req);
if (composite_nomem(subreq, ctx)) return ctx;
tevent_req_set_callback(subreq, sids_to_xids_recv_ids, state);
return ctx;
}
static void sids_to_xids_recv_ids(struct tevent_req *subreq)
{
struct wbc_idmap_state *state =
tevent_req_callback_data(subreq,
struct wbc_idmap_state);
state->ctx->status = dcerpc_winbind_get_idmap_r_recv(subreq, state);
TALLOC_FREE(subreq);
if (!composite_is_ok(state->ctx)) return;
state->ids = state->req->out.ids;
composite_done(state->ctx);
}
NTSTATUS wbc_sids_to_xids_recv(struct composite_context *ctx,
struct id_map **ids)
{
NTSTATUS status = composite_wait(ctx);
DEBUG(5, ("wbc_sids_to_xids_recv called\n"));
if (NT_STATUS_IS_OK(status)) {
struct wbc_idmap_state *state = talloc_get_type_abort(
ctx->private_data,
struct wbc_idmap_state);
*ids = state->ids;
}
return status;
}
static void xids_to_sids_recv_ids(struct tevent_req *subreq);
struct composite_context *wbc_xids_to_sids_send(struct wbc_context *wbc_ctx,
TALLOC_CTX *mem_ctx,
uint32_t count,
struct id_map *ids)
{
struct composite_context *ctx;
struct wbc_idmap_state *state;
struct tevent_req *subreq;
DEBUG(5, ("wbc_xids_to_sids called\n"));
ctx = composite_create(mem_ctx, wbc_ctx->event_ctx);
if (ctx == NULL) return NULL;
state = talloc(ctx, struct wbc_idmap_state);
if (composite_nomem(state, ctx)) return ctx;
ctx->private_data = state;
state->req = talloc(state, struct winbind_get_idmap);
if (composite_nomem(state->req, ctx)) return ctx;
state->req->in.count = count;
state->req->in.level = WINBIND_IDMAP_LEVEL_XIDS_TO_SIDS;
state->req->in.ids = ids;
state->ctx = ctx;
subreq = dcerpc_winbind_get_idmap_r_send(state,
wbc_ctx->event_ctx,
wbc_ctx->irpc_handle,
state->req);
if (composite_nomem(subreq, ctx)) return ctx;
tevent_req_set_callback(subreq, xids_to_sids_recv_ids, state);
return ctx;
}
static void xids_to_sids_recv_ids(struct tevent_req *subreq)
{
struct wbc_idmap_state *state =
tevent_req_callback_data(subreq,
struct wbc_idmap_state);
state->ctx->status = dcerpc_winbind_get_idmap_r_recv(subreq, state);
TALLOC_FREE(subreq);
if (!composite_is_ok(state->ctx)) return;
state->ids = state->req->out.ids;
composite_done(state->ctx);
}
NTSTATUS wbc_xids_to_sids_recv(struct composite_context *ctx,
struct id_map **ids)
{
NTSTATUS status = composite_wait(ctx);
DEBUG(5, ("wbc_xids_to_sids_recv called\n"));
if (NT_STATUS_IS_OK(status)) {
struct wbc_idmap_state *state = talloc_get_type_abort(
ctx->private_data,
struct wbc_idmap_state);
*ids = state->ids;
}
return status;
}
static int wb_simple_trans(struct tevent_context *ev, int fd,
struct winbindd_request *wb_req,
TALLOC_CTX *mem_ctx,
struct winbindd_response **resp, int *err)
{
struct tevent_req *req;
bool polled;
int ret;
req = wb_simple_trans_send(ev, ev, NULL, fd, wb_req);
if (req == NULL) {
*err = ENOMEM;
return -1;
}
polled = tevent_req_poll(req, ev);
if (!polled) {
*err = errno;
DEBUG(10, ("tevent_req_poll returned %s\n",
strerror(*err)));
return -1;
}
ret = wb_simple_trans_recv(req, mem_ctx, resp, err);
TALLOC_FREE(req);
return ret;
}
static const char *winbindd_socket_dir(void)
{
#ifdef SOCKET_WRAPPER
const char *env_dir;
env_dir = getenv(WINBINDD_SOCKET_DIR_ENVVAR);
if (env_dir) {
return env_dir;
}
#endif
return WINBINDD_SOCKET_DIR;
}
static int winbindd_pipe_sock(void)
{
struct sockaddr_un sunaddr = {};
int ret, fd;
char *path;
ret = asprintf(&path, "%s/%s", winbindd_socket_dir(),
WINBINDD_SOCKET_NAME);
if (ret == -1) {
errno = ENOMEM;
return -1;
}
sunaddr.sun_family = AF_UNIX;
strlcpy(sunaddr.sun_path, path, sizeof(sunaddr.sun_path));
free(path);
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd == -1) {
return -1;
}
ret = connect(fd, (struct sockaddr *)&sunaddr, sizeof(sunaddr));
if (ret == -1) {
int err = errno;
close(fd);
errno = err;
return -1;
}
return fd;
}
NTSTATUS wbc_sids_to_xids(struct tevent_context *ev, struct id_map *ids,
uint32_t count)
{
TALLOC_CTX *mem_ctx;
struct winbindd_request req = {};
struct winbindd_response *resp;
uint32_t i;
int fd, ret, err;
char *sids, *p;
size_t sidslen;
fd = winbindd_pipe_sock();
if (fd == -1) {
return map_nt_error_from_unix_common(errno);
}
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
close(fd);
return NT_STATUS_NO_MEMORY;
}
sidslen = count * (DOM_SID_STR_BUFLEN + 1);
sids = talloc_array(mem_ctx, char, sidslen);
if (sids == NULL) {
close(fd);
TALLOC_FREE(mem_ctx);
return NT_STATUS_NO_MEMORY;
}
p = sids;
for (i=0; i<count; i++) {
p += dom_sid_string_buf(ids[i].sid, p, sidslen - (p - sids));
*p++ = '\n';
}
*p++ = '\0';
DEBUG(10, ("sids=\n%s", sids));
req.length = sizeof(struct winbindd_request);
req.cmd = WINBINDD_SIDS_TO_XIDS;
req.pid = getpid();
req.extra_data.data = sids;
req.extra_len = sidslen;
ret = wb_simple_trans(ev, fd, &req, mem_ctx, &resp, &err);
if (ret == -1) {
return map_nt_error_from_unix_common(err);
}
close(fd);
p = resp->extra_data.data;
for (i=0; i<count; i++) {
struct unixid *id = &ids[i].xid;
char *q;
switch (p[0]) {
case 'U':
id->type = ID_TYPE_UID;
id->id = strtoul(p+1, &q, 10);
break;
case 'G':
id->type = ID_TYPE_GID;
id->id = strtoul(p+1, &q, 10);
break;
case 'B':
id->type = ID_TYPE_BOTH;
id->id = strtoul(p+1, &q, 10);
break;
default:
id->type = ID_TYPE_NOT_SPECIFIED;
id->id = UINT32_MAX;
q = strchr(p, '\n');
break;
};
ids[i].status = ID_MAPPED;
if (q == NULL || q[0] != '\n') {
TALLOC_FREE(mem_ctx);
return NT_STATUS_INTERNAL_ERROR;
}
p = q+1;
}
return NT_STATUS_OK;
}
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