source: branches/samba-3.5.x/source3/winbindd/winbindd_getpwnam.c

/*
   Unix SMB/CIFS implementation.
   async implementation of WINBINDD_GETPWNAM
   Copyright (C) Volker Lendecke 2009

   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 "winbindd.h"

struct winbindd_getpwnam_state {
        struct tevent_context *ev;
        fstring domname;
        fstring username;
        struct dom_sid sid;
        enum lsa_SidType type;
        struct winbindd_pw pw;
};

static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq);
static void winbindd_getpwnam_done(struct tevent_req *subreq);

struct tevent_req *winbindd_getpwnam_send(TALLOC_CTX *mem_ctx,
                                          struct tevent_context *ev,
                                          struct winbindd_cli_state *cli,
                                          struct winbindd_request *request)
{
        struct tevent_req *req, *subreq;
        struct winbindd_getpwnam_state *state;
        char *domuser, *mapped_user;
        NTSTATUS status;

        req = tevent_req_create(mem_ctx, &state,
                                struct winbindd_getpwnam_state);
        if (req == NULL) {
                return NULL;
        }
        state->ev = ev;

        /* Ensure null termination */
        request->data.username[sizeof(request->data.username)-1]='\0';

        DEBUG(3, ("getpwnam %s\n", request->data.username));

        domuser = request->data.username;

        status = normalize_name_unmap(state, domuser, &mapped_user);

        if (NT_STATUS_IS_OK(status)
            || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
                /* normalize_name_unmapped did something */
                domuser = mapped_user;
        }

        if (!parse_domain_user(domuser, state->domname, state->username)) {
                DEBUG(5, ("Could not parse domain user: %s\n", domuser));
                tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
                return tevent_req_post(req, ev);
        }

        if (lp_winbind_trusted_domains_only()
            && strequal(state->domname, lp_workgroup())) {
                DEBUG(7,("winbindd_getpwnam: My domain -- "
                         "rejecting getpwnam() for %s\\%s.\n",
                         state->domname, state->username));
                tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
                return tevent_req_post(req, ev);
        }

        subreq = wb_lookupname_send(state, ev, state->domname, state->username,
                                    LOOKUP_NAME_NO_NSS);
        if (tevent_req_nomem(subreq, req)) {
                return tevent_req_post(req, ev);
        }
        tevent_req_set_callback(subreq, winbindd_getpwnam_lookupname_done,
                                req);
        return req;
}

static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq)
{
        struct tevent_req *req = tevent_req_callback_data(
                subreq, struct tevent_req);
        struct winbindd_getpwnam_state *state = tevent_req_data(
                req, struct winbindd_getpwnam_state);
        NTSTATUS status;

        status = wb_lookupname_recv(subreq, &state->sid, &state->type);
        TALLOC_FREE(subreq);
        if (!NT_STATUS_IS_OK(status)) {
                tevent_req_nterror(req, status);
                return;
        }

        subreq = wb_getpwsid_send(state, state->ev, &state->sid, &state->pw);
        if (tevent_req_nomem(subreq, req)) {
                return;
        }
        tevent_req_set_callback(subreq, winbindd_getpwnam_done, req);
}

static void winbindd_getpwnam_done(struct tevent_req *subreq)
{
        struct tevent_req *req = tevent_req_callback_data(
                subreq, struct tevent_req);
        NTSTATUS status;

        status = wb_getpwsid_recv(subreq);
        TALLOC_FREE(subreq);
        if (!NT_STATUS_IS_OK(status)) {
                tevent_req_nterror(req, status);
                return;
        }
        tevent_req_done(req);
}

NTSTATUS winbindd_getpwnam_recv(struct tevent_req *req,
                                struct winbindd_response *response)
{
        struct winbindd_getpwnam_state *state = tevent_req_data(
                req, struct winbindd_getpwnam_state);
        NTSTATUS status;

        if (tevent_req_is_nterror(req, &status)) {
                DEBUG(5, ("Could not convert sid %s: %s\n",
                          sid_string_dbg(&state->sid), nt_errstr(status)));
                return status;
        }
        response->data.pw = state->pw;
        return NT_STATUS_OK;
}