source4/winbind/wb_cmd_getpwuid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Backend for getpwuid
   5
   6    Copyright (C) Kai Blin 2007
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "libcli/composite/composite.h"
  24 #include "winbind/wb_server.h"
  25 #include "smbd/service_task.h"
  26 #include "param/param.h"
  27
  28 struct cmd_getpwuid_state {
  29         struct composite_context *ctx;
  30         struct wbsrv_service *service;
  31         uid_t uid;
  32         struct dom_sid *sid;
  33         char *workgroup;
  34         struct wbsrv_domain *domain;
  35
  36         struct winbindd_pw *result;
  37 };
  38
  39 static void cmd_getpwuid_recv_sid(struct composite_context *ctx);
  40 static void cmd_getpwuid_recv_domain(struct composite_context *ctx);
  41 static void cmd_getpwuid_recv_user_info(struct composite_context *ctx);
  42 static void cmd_getpwuid_recv_gid(struct composite_context *ctx);
  43
  44 /* Get the SID using the uid */
  45
  46 struct composite_context *wb_cmd_getpwuid_send(TALLOC_CTX *mem_ctx,
  47                                                  struct wbsrv_service *service,
  48                                                  uid_t uid)
  49 {
  50         struct composite_context *ctx, *result;
  51         struct cmd_getpwuid_state *state;
  52
  53         DEBUG(5, ("wb_cmd_getpwuid_send called\n"));
  54
  55         result = composite_create(mem_ctx, service->task->event_ctx);
  56         if (!result) return NULL;
  57
  58         state = talloc(result, struct cmd_getpwuid_state);
  59         if (composite_nomem(state, result)) return result;
  60         state->ctx = result;
  61         result->private_data = state;
  62         state->service = service;
  63         state->uid = uid;
  64
  65         ctx = wb_uid2sid_send(state, service, uid);
  66         if (composite_nomem(ctx, state->ctx)) return result;
  67
  68         composite_continue(result, ctx, cmd_getpwuid_recv_sid, state);
  69         return result;
  70 }
  71
  72
  73 /* Receive the sid and get the domain structure with it */
  74
  75 static void cmd_getpwuid_recv_sid(struct composite_context *ctx)
  76 {
  77         struct cmd_getpwuid_state *state =
  78                 talloc_get_type(ctx->async.private_data,
  79                                 struct cmd_getpwuid_state);
  80
  81         DEBUG(5, ("cmd_getpwuid_recv_sid called %p\n", ctx->private_data));
  82
  83         state->ctx->status = wb_uid2sid_recv(ctx, state, &state->sid);
  84         if (!composite_is_ok(state->ctx)) return;
  85
  86         ctx = wb_sid2domain_send(state, state->service, state->sid);
  87
  88         composite_continue(state->ctx, ctx, cmd_getpwuid_recv_domain, state);
  89 }
  90
  91 /* Receive the domain struct and call libnet to get the user info struct */
  92
  93 static void cmd_getpwuid_recv_domain(struct composite_context *ctx)
  94 {
  95         struct cmd_getpwuid_state *state =
  96                 talloc_get_type(ctx->async.private_data,
  97                                 struct cmd_getpwuid_state);
  98         struct libnet_UserInfo *user_info;
  99
 100         DEBUG(5, ("cmd_getpwuid_recv_domain called\n"));
 101
 102         state->ctx->status = wb_sid2domain_recv(ctx, &state->domain);
 103         if (!composite_is_ok(state->ctx)) return;
 104
 105         user_info = talloc(state, struct libnet_UserInfo);
 106         if (composite_nomem(user_info, state->ctx)) return;
 107
 108         user_info->in.level = USER_INFO_BY_SID;
 109         user_info->in.data.user_sid = state->sid;
 110         user_info->in.domain_name = state->domain->libnet_ctx->samr.name;
 111
 112         /* We need the workgroup later, so copy it  */
 113         state->workgroup = talloc_strdup(state,
 114                         state->domain->libnet_ctx->samr.name);
 115         if (composite_nomem(state->workgroup, state->ctx)) return;
 116
 117         ctx = libnet_UserInfo_send(state->domain->libnet_ctx, state, user_info,
 118                         NULL);
 119
 120         composite_continue(state->ctx, ctx, cmd_getpwuid_recv_user_info, state);
 121 }
 122
 123 /* Receive the user info struct and get the gid for the user */
 124
 125 static void cmd_getpwuid_recv_user_info(struct composite_context *ctx)
 126 {
 127         struct cmd_getpwuid_state *state =
 128                 talloc_get_type(ctx->async.private_data,
 129                                 struct cmd_getpwuid_state);
 130         struct libnet_UserInfo *user_info;
 131         struct winbindd_pw *pw;
 132         char *username_with_domain;
 133
 134         DEBUG(5, ("cmd_getpwuid_recv_user_info called\n"));
 135
 136         pw = talloc(state, struct winbindd_pw);
 137         if (composite_nomem(pw, state->ctx)) return;
 138
 139         user_info = talloc(state, struct libnet_UserInfo);
 140         if(composite_nomem(user_info, state->ctx)) return;
 141
 142         state->ctx->status = libnet_UserInfo_recv(ctx, state, user_info);
 143         if (!composite_is_ok(state->ctx)) return;
 144
 145         username_with_domain = talloc_asprintf(pw, "%s%s%s",
 146                 state->workgroup,
 147                 lpcfg_winbind_separator(state->service->task->lp_ctx),
 148                 user_info->out.account_name);
 149         if(composite_nomem(username_with_domain, state->ctx)) return;
 150
 151         WBSRV_SAMBA3_SET_STRING(pw->pw_name, username_with_domain);
 152         WBSRV_SAMBA3_SET_STRING(pw->pw_passwd, "*");
 153         WBSRV_SAMBA3_SET_STRING(pw->pw_gecos, user_info->out.full_name);
 154         WBSRV_SAMBA3_SET_STRING(pw->pw_dir,
 155                 lpcfg_template_homedir(state->service->task->lp_ctx));
 156         all_string_sub(pw->pw_dir, "%WORKGROUP%", state->workgroup,
 157                         sizeof(fstring) - 1);
 158         all_string_sub(pw->pw_dir, "%ACCOUNTNAME%", user_info->out.account_name,
 159                         sizeof(fstring) - 1);
 160         WBSRV_SAMBA3_SET_STRING(pw->pw_shell,
 161                                 lpcfg_template_shell(state->service->task->lp_ctx));
 162
 163         pw->pw_uid = state->uid;
 164
 165         state->result = pw;
 166
 167         ctx = wb_sid2gid_send(state, state->service,
 168                         user_info->out.primary_group_sid);
 169
 170         composite_continue(state->ctx, ctx, cmd_getpwuid_recv_gid, state);
 171 }
 172
 173 static void cmd_getpwuid_recv_gid(struct composite_context *ctx)
 174 {
 175         struct cmd_getpwuid_state *state =
 176                 talloc_get_type(ctx->async.private_data,
 177                                 struct cmd_getpwuid_state);
 178         gid_t gid;
 179
 180         DEBUG(5, ("cmd_getpwuid_recv_gid called\n"));
 181
 182         state->ctx->status = wb_sid2gid_recv(ctx, &gid);
 183         if (!composite_is_ok(state->ctx)) return;
 184
 185         state->result->pw_gid = gid;
 186
 187         composite_done(state->ctx);
 188 }
 189
 190 NTSTATUS wb_cmd_getpwuid_recv(struct composite_context *ctx,
 191                 TALLOC_CTX *mem_ctx, struct winbindd_pw **pw)
 192 {
 193         NTSTATUS status = composite_wait(ctx);
 194
 195         DEBUG(5, ("wb_cmd_getpwuid_recv called\n"));
 196
 197         if (NT_STATUS_IS_OK(status)) {
 198                 struct cmd_getpwuid_state *state =
 199                         talloc_get_type(ctx->private_data,
 200                                         struct cmd_getpwuid_state);
 201                 *pw = talloc_steal(mem_ctx, state->result);
 202         }
 203         talloc_free(ctx);
 204         return status;
 205
 206 }
 207