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 "winbind/wb_async_helpers.h"
  26 #include "winbind/wb_helper.h"
  27 #include "smbd/service_task.h"
  28 #include "nsswitch/winbindd_nss.h"
  29 #include "libnet/libnet_proto.h"
  30 #include "param/param.h"
  31 #include "libcli/security/proto.h"
  32 #include "auth/credentials/credentials.h"
  33
  34 struct cmd_getpwuid_state {
  35         struct composite_context *ctx;
  36         struct wbsrv_service *service;
  37         uid_t uid;
  38         char *workgroup;
  39         struct wbsrv_domain *domain;
  40
  41         struct winbindd_pw *result;
  42 };
  43
  44 static void cmd_getpwuid_recv_sid(struct composite_context *ctx);
  45 static void cmd_getpwuid_recv_domain(struct composite_context *ctx);
  46 static void cmd_getpwuid_recv_user_info(struct composite_context *ctx);
  47 static void cmd_getpwuid_recv_gid(struct composite_context *ctx);
  48
  49 /* Get the SID using the uid */
  50
  51 struct composite_context *wb_cmd_getpwuid_send(TALLOC_CTX *mem_ctx,
  52                                                  struct wbsrv_service *service,
  53                                                  uid_t uid)
  54 {
  55         struct composite_context *ctx, *result;
  56         struct cmd_getpwuid_state *state;
  57
  58         DEBUG(5, ("wb_cmd_getpwnam_send called\n"));
  59
  60         result = composite_create(mem_ctx, service->task->event_ctx);
  61         if (!result) return NULL;
  62
  63         state = talloc(result, struct cmd_getpwuid_state);
  64         if (composite_nomem(state, result)) return result;
  65         state->ctx = result;
  66         result->private_data = state;
  67         state->service = service;
  68         state->uid = uid;
  69
  70         ctx = wb_uid2sid_send(state, service, uid);
  71         if (composite_nomem(ctx, state->ctx)) return result;
  72
  73         composite_continue(result, ctx, cmd_getpwuid_recv_sid, state);
  74         return result;
  75 }
  76
  77
  78 /* Receive the sid and get the domain structure with it */
  79
  80 static void cmd_getpwuid_recv_sid(struct composite_context *ctx)
  81 {
  82         struct cmd_getpwuid_state *state =
  83                 talloc_get_type(ctx->async.private_data,
  84                                 struct cmd_getpwuid_state);
  85         struct dom_sid *sid;
  86
  87         DEBUG(5, ("cmd_getpwuid_recv_sid called %p\n", ctx->private_data));
  88
  89         state->ctx->status = wb_uid2sid_recv(ctx, state, &sid);
  90         if (!composite_is_ok(state->ctx)) return;
  91
  92         ctx = wb_sid2domain_send(state, state->service, sid);
  93
  94         composite_continue(state->ctx, ctx, cmd_getpwuid_recv_domain, state);
  95 }
  96
  97 /* Receive the domain struct and call libnet to get the user info struct */
  98
  99 static void cmd_getpwuid_recv_domain(struct composite_context *ctx)
 100 {
 101         struct cmd_getpwuid_state *state =
 102                 talloc_get_type(ctx->async.private_data,
 103                                 struct cmd_getpwuid_state);
 104         struct libnet_UserInfo *user_info;
 105
 106         DEBUG(5, ("cmd_getpwuid_recv_domain called\n"));
 107
 108         state->ctx->status = wb_sid2domain_recv(ctx, &state->domain);
 109         if (!composite_is_ok(state->ctx)) return;
 110
 111         user_info = talloc(state, struct libnet_UserInfo);
 112         if (composite_nomem(user_info, state->ctx)) return;
 113
 114         user_info->in.user_name = state->domain->libnet_ctx->cred->username;
 115         user_info->in.domain_name = state->domain->libnet_ctx->samr.name;
 116
 117         /* We need the workgroup later, so copy it  */
 118         state->workgroup = talloc_strdup(state,
 119                         state->domain->libnet_ctx->samr.name);
 120         if (composite_nomem(state->workgroup, state->ctx)) return;
 121
 122         ctx = libnet_UserInfo_send(state->domain->libnet_ctx, state, user_info,
 123                         NULL);
 124
 125         composite_continue(state->ctx, ctx, cmd_getpwuid_recv_user_info, state);
 126 }
 127
 128 /* Receive the user info struct and get the gid for the user */
 129
 130 static void cmd_getpwuid_recv_user_info(struct composite_context *ctx)
 131 {
 132         struct cmd_getpwuid_state *state =
 133                 talloc_get_type(ctx->async.private_data,
 134                                 struct cmd_getpwuid_state);
 135         struct libnet_UserInfo *user_info;
 136         struct winbindd_pw *pw;
 137
 138         DEBUG(5, ("cmd_getpwuid_recv_user_info called\n"));
 139
 140         pw = talloc(state, struct winbindd_pw);
 141         if (composite_nomem(pw, state->ctx)) return;
 142
 143         user_info = talloc(state, struct libnet_UserInfo);
 144         if(composite_nomem(user_info, state->ctx)) return;
 145
 146         state->ctx->status = libnet_UserInfo_recv(ctx, state, user_info);
 147         if (!composite_is_ok(state->ctx)) return;
 148
 149         WBSRV_SAMBA3_SET_STRING(pw->pw_name, user_info->out.account_name);
 150         WBSRV_SAMBA3_SET_STRING(pw->pw_passwd, "*");
 151         WBSRV_SAMBA3_SET_STRING(pw->pw_gecos, user_info->out.full_name);
 152         WBSRV_SAMBA3_SET_STRING(pw->pw_dir, lp_template_homedir());
 153         all_string_sub(pw->pw_dir, "%WORKGROUP%", state->workgroup,
 154                         sizeof(fstring) - 1);
 155         all_string_sub(pw->pw_dir, "%ACCOUNTNAME%", user_info->out.account_name,
 156                         sizeof(fstring) - 1);
 157         WBSRV_SAMBA3_SET_STRING(pw->pw_shell, lp_template_shell());
 158
 159         pw->pw_uid = state->uid;
 160
 161         state->result = pw;
 162
 163         ctx = wb_sid2gid_send(state, state->service,
 164                         user_info->out.primary_group_sid);
 165
 166         composite_continue(state->ctx, ctx, cmd_getpwuid_recv_gid, state);
 167 }
 168
 169 static void cmd_getpwuid_recv_gid(struct composite_context *ctx)
 170 {
 171         struct cmd_getpwuid_state *state =
 172                 talloc_get_type(ctx->async.private_data,
 173                                 struct cmd_getpwuid_state);
 174         gid_t gid;
 175
 176         DEBUG(5, ("cmd_getpwuid_recv_gid called\n"));
 177
 178         state->ctx->status = wb_sid2gid_recv(ctx, &gid);
 179         if (!composite_is_ok(state->ctx)) return;
 180
 181         state->result->pw_gid = gid;
 182
 183         composite_done(state->ctx);
 184 }
 185
 186 NTSTATUS wb_cmd_getpwuid_recv(struct composite_context *ctx,
 187                 TALLOC_CTX *mem_ctx, struct winbindd_pw **pw)
 188 {
 189         NTSTATUS status = composite_wait(ctx);
 190
 191         DEBUG(5, ("wb_cmd_getpwnam_recv called\n"));
 192
 193         if (NT_STATUS_IS_OK(status)) {
 194                 struct cmd_getpwuid_state *state =
 195                         talloc_get_type(ctx->private_data,
 196                                         struct cmd_getpwuid_state);
 197                 *pw = talloc_steal(mem_ctx, state->result);
 198         }
 199         talloc_free(ctx);
 200         return status;
 201
 202 }
 203