source3/winbindd/winbindd_pam_auth_crap.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_PAM_AUTH_CRAP
   4    Copyright (C) Volker Lendecke 2010
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "winbindd.h"
  22
  23 struct winbindd_pam_auth_crap_state {
  24         struct winbindd_response *response;
  25 };
  26
  27 static void winbindd_pam_auth_crap_done(struct tevent_req *subreq);
  28
  29 struct tevent_req *winbindd_pam_auth_crap_send(
  30         TALLOC_CTX *mem_ctx,
  31         struct tevent_context *ev,
  32         struct winbindd_cli_state *cli,
  33         struct winbindd_request *request)
  34 {
  35         struct tevent_req *req, *subreq;
  36         struct winbindd_pam_auth_crap_state *state;
  37         struct winbindd_domain *domain;
  38         const char *domain_name;
  39
  40         req = tevent_req_create(mem_ctx, &state,
  41                                 struct winbindd_pam_auth_crap_state);
  42         if (req == NULL) {
  43                 return NULL;
  44         }
  45
  46         /* Ensure null termination */
  47         request->data.auth_crap.user[
  48                 sizeof(request->data.auth_crap.user)-1] = '\0';
  49         request->data.auth_crap.domain[
  50                 sizeof(request->data.auth_crap.domain)-1] = '\0';
  51         request->data.auth_crap.workstation[
  52                 sizeof(request->data.auth_crap.workstation)-1] = '\0';
  53
  54         DEBUG(3, ("[%5lu]: pam auth crap domain: [%s] user: %s\n",
  55                   (unsigned long)cli->pid,
  56                   request->data.auth_crap.domain,
  57                   request->data.auth_crap.user));
  58
  59         if (!check_request_flags(request->flags)) {
  60                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
  61                 return tevent_req_post(req, ev);
  62         }
  63
  64         domain_name = NULL;
  65
  66         if (request->data.auth_crap.domain[0] != '\0') {
  67                 domain_name = request->data.auth_crap.domain;
  68         } else if (lp_winbind_use_default_domain()) {
  69                 domain_name = lp_workgroup();
  70         }
  71
  72         domain = NULL;
  73
  74         if (domain_name != NULL) {
  75                 domain = find_auth_domain(request->flags, domain_name);
  76         }
  77
  78         if (domain == NULL) {
  79                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
  80                 return tevent_req_post(req, ev);
  81         }
  82
  83         fstrcpy(request->data.auth_crap.domain, domain->name);
  84
  85         if (request->data.auth_crap.workstation[0] == '\0') {
  86                 fstrcpy(request->data.auth_crap.workstation, global_myname());
  87         }
  88
  89         subreq = wb_domain_request_send(state, winbind_event_context(), domain,
  90                                         request);
  91         if (tevent_req_nomem(subreq, req)) {
  92                 return tevent_req_post(req, ev);
  93         }
  94         tevent_req_set_callback(subreq, winbindd_pam_auth_crap_done, req);
  95         return req;
  96 }
  97
  98 static void winbindd_pam_auth_crap_done(struct tevent_req *subreq)
  99 {
 100         struct tevent_req *req = tevent_req_callback_data(
 101                 subreq, struct tevent_req);
 102         struct winbindd_pam_auth_crap_state *state = tevent_req_data(
 103                 req, struct winbindd_pam_auth_crap_state);
 104         int res, err;
 105
 106         res = wb_domain_request_recv(subreq, state, &state->response, &err);
 107         TALLOC_FREE(subreq);
 108         if (res == -1) {
 109                 tevent_req_nterror(req, map_nt_error_from_unix(err));
 110                 return;
 111         }
 112         tevent_req_done(req);
 113 }
 114
 115 NTSTATUS winbindd_pam_auth_crap_recv(struct tevent_req *req,
 116                                      struct winbindd_response *response)
 117 {
 118         struct winbindd_pam_auth_crap_state *state = tevent_req_data(
 119                 req, struct winbindd_pam_auth_crap_state);
 120         NTSTATUS status;
 121
 122         if (tevent_req_is_nterror(req, &status)) {
 123                 set_auth_errors(response, status);
 124                 return status;
 125         }
 126         *response = *state->response;
 127         response->result = WINBINDD_PENDING;
 128         state->response = talloc_move(response, &state->response);
 129         return NT_STATUS(response->data.auth.nt_status);
 130 }