source3/nsswitch/winbindd_misc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind daemon - miscellaneous other functions
   5
   6    Copyright (C) Tim Potter      2000
   7    Copyright (C) Andrew Bartlett 2002
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "winbindd.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_WINBIND
  28
  29 /* Check the machine account password is valid */
  30
  31 enum winbindd_result winbindd_check_machine_acct(struct winbindd_cli_state *state)
  32 {
  33         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
  34         uchar trust_passwd[16];
  35         int num_retries = 0;
  36         struct cli_state *cli;
  37         uint32 sec_channel_type;
  38         const char *contact_domain_name = NULL;
  39
  40         DEBUG(3, ("[%5lu]: check machine account\n", (unsigned long)state->pid));
  41
  42         /* Get trust account password */
  43
  44  again:
  45         if (!secrets_fetch_trust_account_password(
  46                     lp_workgroup(), trust_passwd, NULL, &sec_channel_type)) {
  47                 result = NT_STATUS_INTERNAL_ERROR;
  48                 goto done;
  49         }
  50
  51
  52         /* use the realm name if appropriate and possible */
  53
  54         if ( lp_security() == SEC_ADS )
  55                 contact_domain_name = lp_realm();
  56
  57         if ( !contact_domain_name || !*contact_domain_name )
  58                 contact_domain_name = lp_workgroup();
  59
  60         /* This call does a cli_nt_setup_creds() which implicitly checks
  61            the trust account password. */
  62         /* Don't shut this down - it belongs to the connection cache code */
  63
  64         result = cm_get_netlogon_cli(contact_domain_name,
  65                 trust_passwd, sec_channel_type, True, &cli);
  66
  67         if (!NT_STATUS_IS_OK(result)) {
  68                 DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
  69                 goto done;
  70         }
  71
  72         /* There is a race condition between fetching the trust account
  73            password and the periodic machine password change.  So it's
  74            possible that the trust account password has been changed on us.
  75            We are returned NT_STATUS_ACCESS_DENIED if this happens. */
  76
  77 #define MAX_RETRIES 8
  78
  79         if ((num_retries < MAX_RETRIES) &&
  80             NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED)) {
  81                 num_retries++;
  82                 goto again;
  83         }
  84
  85         /* Pass back result code - zero for success, other values for
  86            specific failures. */
  87
  88         DEBUG(3, ("secret is %s\n", NT_STATUS_IS_OK(result) ?
  89                   "good" : "bad"));
  90
  91  done:
  92         state->response.data.auth.nt_status = NT_STATUS_V(result);
  93         fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
  94         fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
  95         state->response.data.auth.pam_error = nt_status_to_pam(result);
  96
  97         DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Checking the trust account password returned %s\n",
  98                                                 state->response.data.auth.nt_status_string));
  99
 100         return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 101 }
 102
 103 enum winbindd_result winbindd_list_trusted_domains(struct winbindd_cli_state
 104                                                    *state)
 105 {
 106         struct winbindd_domain *domain;
 107         int total_entries = 0, extra_data_len = 0;
 108         char *ted, *extra_data = NULL;
 109
 110         DEBUG(3, ("[%5lu]: list trusted domains\n", (unsigned long)state->pid));
 111
 112         /* We need to refresh the trusted domain list as the domains may
 113            have changed since we last looked.  There may be a sequence
 114            number or something we should use but I haven't found it yet. */
 115
 116         if (!init_domain_list()) {
 117                 DEBUG(1, ("winbindd_list_trusted_domains: could not "
 118                           "refresh trusted domain list\n"));
 119                 return WINBINDD_ERROR;
 120         }
 121
 122         for(domain = domain_list(); domain; domain = domain->next) {
 123
 124                 /* Skip own domain */
 125
 126                 if (strequal(domain->name, lp_workgroup())) continue;
 127
 128                 /* Add domain to list */
 129
 130                 total_entries++;
 131                 ted = Realloc(extra_data, sizeof(fstring) *
 132                               total_entries);
 133
 134                 if (!ted) {
 135                         DEBUG(0,("winbindd_list_trusted_domains: failed to enlarge buffer!\n"));
 136                         SAFE_FREE(extra_data);
 137                         return WINBINDD_ERROR;
 138                 } else
 139                         extra_data = ted;
 140
 141                 memcpy(&extra_data[extra_data_len], domain->name,
 142                        strlen(domain->name));
 143
 144                 extra_data_len  += strlen(domain->name);
 145                 extra_data[extra_data_len++] = ',';
 146         }
 147
 148         if (extra_data) {
 149                 if (extra_data_len > 1)
 150                         extra_data[extra_data_len - 1] = '\0';
 151                 state->response.extra_data = extra_data;
 152                 state->response.length += extra_data_len;
 153         }
 154
 155         return WINBINDD_OK;
 156 }
 157
 158
 159 enum winbindd_result winbindd_show_sequence(struct winbindd_cli_state *state)
 160 {
 161         struct winbindd_domain *domain;
 162         char *extra_data = NULL;
 163         const char *which_domain;
 164
 165         DEBUG(3, ("[%5lu]: show sequence\n", (unsigned long)state->pid));
 166
 167         /* Ensure null termination */
 168         state->request.domain_name[sizeof(state->request.domain_name)-1]='\0';
 169         which_domain = state->request.domain_name;
 170
 171         extra_data = strdup("");
 172
 173         /* this makes for a very simple data format, and is easily parsable as well
 174            if that is ever needed */
 175         for (domain = domain_list(); domain; domain = domain->next) {
 176                 char *s;
 177
 178                 /* if we have a domain name restricting the request and this
 179                    one in the list doesn't match, then just bypass the remainder
 180                    of the loop */
 181
 182                 if ( *which_domain && !strequal(which_domain, domain->name) )
 183                         continue;
 184
 185                 domain->methods->sequence_number(domain, &domain->sequence_number);
 186
 187                 if (DOM_SEQUENCE_NONE == (unsigned)domain->sequence_number) {
 188                         asprintf(&s,"%s%s : DISCONNECTED\n", extra_data,
 189                                  domain->name);
 190                 } else {
 191                         asprintf(&s,"%s%s : %u\n", extra_data,
 192                                  domain->name, (unsigned)domain->sequence_number);
 193                 }
 194                 free(extra_data);
 195                 extra_data = s;
 196         }
 197
 198         state->response.extra_data = extra_data;
 199         /* must add one to length to copy the 0 for string termination */
 200         state->response.length += strlen(extra_data) + 1;
 201
 202         return WINBINDD_OK;
 203 }
 204
 205 enum winbindd_result winbindd_ping(struct winbindd_cli_state
 206                                                    *state)
 207 {
 208         DEBUG(3, ("[%5lu]: ping\n", (unsigned long)state->pid));
 209
 210         return WINBINDD_OK;
 211 }
 212
 213 /* List various tidbits of information */
 214
 215 enum winbindd_result winbindd_info(struct winbindd_cli_state *state)
 216 {
 217
 218         DEBUG(3, ("[%5lu]: request misc info\n", (unsigned long)state->pid));
 219
 220         state->response.data.info.winbind_separator = *lp_winbind_separator();
 221         fstrcpy(state->response.data.info.samba_version, SAMBA_VERSION_STRING);
 222
 223         return WINBINDD_OK;
 224 }
 225
 226 /* Tell the client the current interface version */
 227
 228 enum winbindd_result winbindd_interface_version(struct winbindd_cli_state *state)
 229 {
 230
 231         DEBUG(3, ("[%5lu]: request interface version\n", (unsigned long)state->pid));
 232
 233         state->response.data.interface_version = WINBIND_INTERFACE_VERSION;
 234
 235         return WINBINDD_OK;
 236 }
 237
 238 /* What domain are we a member of? */
 239
 240 enum winbindd_result winbindd_domain_name(struct winbindd_cli_state *state)
 241 {
 242
 243         DEBUG(3, ("[%5lu]: request domain name\n", (unsigned long)state->pid));
 244
 245         fstrcpy(state->response.data.domain_name, lp_workgroup());
 246
 247         return WINBINDD_OK;
 248 }
 249
 250 /* What's my name again? */
 251
 252 enum winbindd_result winbindd_netbios_name(struct winbindd_cli_state *state)
 253 {
 254
 255         DEBUG(3, ("[%5lu]: request netbios name\n", (unsigned long)state->pid));
 256
 257         fstrcpy(state->response.data.netbios_name, global_myname());
 258
 259         return WINBINDD_OK;
 260 }
 261
 262 /* Where can I find the privilaged pipe? */
 263
 264 enum winbindd_result winbindd_priv_pipe_dir(struct winbindd_cli_state *state)
 265 {
 266
 267         DEBUG(3, ("[%5lu]: request location of privileged pipe\n", (unsigned long)state->pid));
 268
 269         state->response.extra_data = strdup(get_winbind_priv_pipe_dir());
 270         if (!state->response.extra_data)
 271                 return WINBINDD_ERROR;
 272
 273         /* must add one to length to copy the 0 for string termination */
 274         state->response.length += strlen((char *)state->response.extra_data) + 1;
 275
 276         return WINBINDD_OK;
 277 }