source: vendor/current/source3/winbindd/winbindd_list_users.c@ 740

/*
   Unix SMB/CIFS implementation.
   async implementation of WINBINDD_LIST_USERS
   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"
#include "librpc/gen_ndr/ndr_wbint_c.h"

struct winbindd_list_users_domstate {
        struct tevent_req *subreq;
        struct winbindd_domain *domain;
        struct wbint_userinfos users;
};

struct winbindd_list_users_state {
        int num_received;
        /* All domains */
        int num_domains;
        struct winbindd_list_users_domstate *domains;
};

static void winbindd_list_users_done(struct tevent_req *subreq);

struct tevent_req *winbindd_list_users_send(TALLOC_CTX *mem_ctx,
                                            struct tevent_context *ev,
                                            struct winbindd_cli_state *cli,
                                            struct winbindd_request *request)
{
        struct tevent_req *req;
        struct winbindd_list_users_state *state;
        struct winbindd_domain *domain;
        int i;

        req = tevent_req_create(mem_ctx, &state,
                                struct winbindd_list_users_state);
        if (req == NULL) {
                return NULL;
        }

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

        DEBUG(3, ("list_users %s\n", request->domain_name));

        if (request->domain_name[0] != '\0') {
                state->num_domains = 1;
        } else {
                state->num_domains = 0;
                for (domain = domain_list(); domain; domain = domain->next) {
                        state->num_domains += 1;
                }
        }

        state->domains = talloc_array(state,
                                      struct winbindd_list_users_domstate,
                                      state->num_domains);
        if (tevent_req_nomem(state->domains, req)) {
                return tevent_req_post(req, ev);
        }

        if (request->domain_name[0] != '\0') {
                state->domains[0].domain = find_domain_from_name_noinit(
                        request->domain_name);
                if (state->domains[0].domain == NULL) {
                        tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
                        return tevent_req_post(req, ev);
                }
        } else {
                i = 0;
                for (domain = domain_list(); domain; domain = domain->next) {
                        state->domains[i++].domain = domain;
                }
        }

        for (i=0; i<state->num_domains; i++) {
                struct winbindd_list_users_domstate *d = &state->domains[i];

                d->subreq = dcerpc_wbint_QueryUserList_send(
                        state->domains, ev, dom_child_handle(d->domain),
                        &d->users);
                if (tevent_req_nomem(d->subreq, req)) {
                        TALLOC_FREE(state->domains);
                        return tevent_req_post(req, ev);
                }
                tevent_req_set_callback(d->subreq, winbindd_list_users_done,
                                        req);
        }
        state->num_received = 0;
        return req;
}

static void winbindd_list_users_done(struct tevent_req *subreq)
{
        struct tevent_req *req = tevent_req_callback_data(
                subreq, struct tevent_req);
        struct winbindd_list_users_state *state = tevent_req_data(
                req, struct winbindd_list_users_state);
        NTSTATUS status, result;
        int i;

        status = dcerpc_wbint_QueryUserList_recv(subreq, state->domains,
                                                 &result);

        for (i=0; i<state->num_domains; i++) {
                if (subreq == state->domains[i].subreq) {
                        break;
                }
        }
        if (i < state->num_domains) {
                struct winbindd_list_users_domstate *d = &state->domains[i];

                DEBUG(10, ("Domain %s returned %d users\n", d->domain->name,
                           d->users.num_userinfos));

                d->subreq = NULL;

                if (!NT_STATUS_IS_OK(status) || !NT_STATUS_IS_OK(result)) {
                        DEBUG(10, ("List_users for domain %s failed\n",
                                   d->domain->name));
                        d->users.num_userinfos = 0;
                }
        }

        TALLOC_FREE(subreq);

        state->num_received += 1;

        if (state->num_received >= state->num_domains) {
                tevent_req_done(req);
        }
}

NTSTATUS winbindd_list_users_recv(struct tevent_req *req,
                                  struct winbindd_response *response)
{
        struct winbindd_list_users_state *state = tevent_req_data(
                req, struct winbindd_list_users_state);
        NTSTATUS status;
        char *result;
        int i;
        uint32_t j;
        size_t len;

        if (tevent_req_is_nterror(req, &status)) {
                return status;
        }

        len = 0;
        response->data.num_entries = 0;
        for (i=0; i<state->num_domains; i++) {
                struct winbindd_list_users_domstate *d = &state->domains[i];

                for (j=0; j<d->users.num_userinfos; j++) {
                        fstring name;
                        fill_domain_username(name, d->domain->name,
                                             d->users.userinfos[j].acct_name,
                                             True);
                        len += strlen(name)+1;
                }
                response->data.num_entries += d->users.num_userinfos;
        }

        result = talloc_array(response, char, len+1);
        if (result == 0) {
                return NT_STATUS_NO_MEMORY;
        }

        len = 0;
        for (i=0; i<state->num_domains; i++) {
                struct winbindd_list_users_domstate *d = &state->domains[i];

                for (j=0; j<d->users.num_userinfos; j++) {
                        fstring name;
                        size_t this_len;
                        fill_domain_username(name, d->domain->name,
                                             d->users.userinfos[j].acct_name,
                                             True);
                        this_len = strlen(name);
                        memcpy(result+len, name, this_len);
                        len += this_len;
                        result[len] = ',';
                        len += 1;
                }
        }
        result[len-1] = '\0';

        response->extra_data.data = result;
        response->length += len;

        return NT_STATUS_OK;
}