source3/winbindd/winbindd_pam_chng_pswd_auth_crap.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_PAM_CHNG_PSWD_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 #include "lib/global_contexts.h"
  23 #include "librpc/gen_ndr/ndr_winbind_c.h"
  24
  25 struct winbindd_pam_chng_pswd_auth_crap_state {
  26         struct wbint_PamAuthCrapChangePassword r;
  27 };
  28
  29 static void winbindd_pam_chng_pswd_auth_crap_done(struct tevent_req *subreq);
  30
  31 struct tevent_req *winbindd_pam_chng_pswd_auth_crap_send(
  32         TALLOC_CTX *mem_ctx,
  33         struct tevent_context *ev,
  34         struct winbindd_cli_state *cli,
  35         struct winbindd_request *request)
  36 {
  37         struct tevent_req *req, *subreq;
  38         struct winbindd_pam_chng_pswd_auth_crap_state *state;
  39         struct winbindd_domain *domain;
  40         const char *domain_name;
  41
  42         req = tevent_req_create(mem_ctx, &state,
  43                                 struct winbindd_pam_chng_pswd_auth_crap_state);
  44         if (req == NULL) {
  45                 return NULL;
  46         }
  47
  48         /* Ensure null termination */
  49         request->data.chng_pswd_auth_crap.user[
  50                 sizeof(request->data.chng_pswd_auth_crap.user)-1]='\0';
  51         request->data.chng_pswd_auth_crap.domain[
  52                 sizeof(request->data.chng_pswd_auth_crap.domain)-1]=0;
  53
  54         DEBUG(3, ("[%5lu]: pam change pswd auth crap domain: %s user: %s\n",
  55                   (unsigned long)cli->pid,
  56                   request->data.chng_pswd_auth_crap.domain,
  57                   request->data.chng_pswd_auth_crap.user));
  58
  59         domain_name = NULL;
  60         if (*request->data.chng_pswd_auth_crap.domain != '\0') {
  61                 domain_name = request->data.chng_pswd_auth_crap.domain;
  62         } else if (lp_winbind_use_default_domain()) {
  63                 domain_name = lp_workgroup();
  64         }
  65
  66         domain = NULL;
  67         if (domain_name != NULL) {
  68                 domain = find_domain_from_name(domain_name);
  69         }
  70
  71         if (domain == NULL) {
  72                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
  73                 return tevent_req_post(req, ev);
  74         }
  75
  76         state->r.in.client_pid = request->pid;
  77         state->r.in.client_name = talloc_strdup(state, request->client_name);
  78         if (tevent_req_nomem(state->r.in.client_name, req)) {
  79                 return tevent_req_post(req, ev);
  80         }
  81
  82         state->r.in.domain = talloc_strdup(state, domain_name);
  83         if (tevent_req_nomem(state->r.in.domain, req)) {
  84                 return tevent_req_post(req, ev);
  85         }
  86         state->r.in.user = talloc_strdup(state,
  87                 request->data.chng_pswd_auth_crap.user);
  88         if (tevent_req_nomem(state->r.in.user, req)) {
  89                 return tevent_req_post(req, ev);
  90         }
  91
  92         state->r.in.new_nt_pswd = data_blob_talloc(state,
  93                 request->data.chng_pswd_auth_crap.new_nt_pswd,
  94                 request->data.chng_pswd_auth_crap.new_nt_pswd_len);
  95         if (tevent_req_nomem(state->r.in.new_nt_pswd.data, req)) {
  96                 return tevent_req_post(req, ev);
  97         }
  98
  99         state->r.in.old_nt_hash_enc = data_blob_talloc(state,
 100                 request->data.chng_pswd_auth_crap.old_nt_hash_enc,
 101                 request->data.chng_pswd_auth_crap.old_nt_hash_enc_len);
 102         if (tevent_req_nomem(state->r.in.old_nt_hash_enc.data, req)) {
 103                 return tevent_req_post(req, ev);
 104         }
 105
 106         if (request->data.chng_pswd_auth_crap.new_lm_pswd_len > 0) {
 107                 state->r.in.new_lm_pswd = data_blob_talloc(state,
 108                         request->data.chng_pswd_auth_crap.new_lm_pswd,
 109                         request->data.chng_pswd_auth_crap.new_lm_pswd_len);
 110                 if (tevent_req_nomem(state->r.in.new_lm_pswd.data, req)) {
 111                         return tevent_req_post(req, ev);
 112                 }
 113
 114                 state->r.in.old_lm_hash_enc = data_blob_talloc(state,
 115                         request->data.chng_pswd_auth_crap.old_lm_hash_enc,
 116                         request->data.chng_pswd_auth_crap.old_lm_hash_enc_len);
 117                 if (tevent_req_nomem(state->r.in.old_lm_hash_enc.data, req)) {
 118                         return tevent_req_post(req, ev);
 119                 }
 120         } else {
 121                 state->r.in.new_lm_pswd = data_blob_null;
 122                 state->r.in.old_lm_hash_enc = data_blob_null;
 123         }
 124
 125         subreq = dcerpc_wbint_PamAuthCrapChangePassword_r_send(state,
 126                                                 global_event_context(),
 127                                                 dom_child_handle(domain),
 128                                                 &state->r);
 129         if (tevent_req_nomem(subreq, req)) {
 130                 return tevent_req_post(req, ev);
 131         }
 132         tevent_req_set_callback(subreq, winbindd_pam_chng_pswd_auth_crap_done,
 133                                 req);
 134         return req;
 135 }
 136
 137 static void winbindd_pam_chng_pswd_auth_crap_done(struct tevent_req *subreq)
 138 {
 139         struct tevent_req *req = tevent_req_callback_data(
 140                 subreq, struct tevent_req);
 141         struct winbindd_pam_chng_pswd_auth_crap_state *state = tevent_req_data(
 142                 req, struct winbindd_pam_chng_pswd_auth_crap_state);
 143         NTSTATUS status;
 144
 145         status = dcerpc_wbint_PamAuthCrapChangePassword_r_recv(subreq, state);
 146         TALLOC_FREE(subreq);
 147         if (tevent_req_nterror(req, status)) {
 148                 return;
 149         }
 150
 151         tevent_req_done(req);
 152 }
 153
 154 NTSTATUS winbindd_pam_chng_pswd_auth_crap_recv(
 155         struct tevent_req *req,
 156         struct winbindd_response *response)
 157 {
 158         struct winbindd_pam_chng_pswd_auth_crap_state *state = tevent_req_data(
 159                 req, struct winbindd_pam_chng_pswd_auth_crap_state);
 160         NTSTATUS status = NT_STATUS_OK;
 161
 162         if (tevent_req_is_nterror(req, &status)) {
 163                 set_auth_errors(response, status);
 164                 return status;
 165         }
 166
 167         response->result = WINBINDD_PENDING;
 168         set_auth_errors(response, state->r.out.result);
 169
 170         return NT_STATUS(response->data.auth.nt_status);
 171 }