source4/lib/cmdline/popt_credentials.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Credentials popt routines
   4
   5    Copyright (C) Jelmer Vernooij 2002,2003,2005
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "lib/cmdline/popt_common.h"
  23 #include "lib/cmdline/credentials.h"
  24 #include "auth/credentials/credentials.h"
  25 #include "auth/gensec/gensec.h"
  26 #include "param/param.h"
  27
  28 /* Handle command line options:
  29  *              -U,--user
  30  *              -A,--authentication-file
  31  *              -k,--use-kerberos
  32  *              -N,--no-pass
  33  *              -S,--signing
  34  *              -P,--machine-pass
  35  *              --simple-bind-dn
  36  *              --password
  37  */
  38
  39 static bool dont_ask;
  40 static bool machine_account_pending;
  41
  42 enum opt { OPT_SIMPLE_BIND_DN, OPT_PASSWORD, OPT_KERBEROS, OPT_SIGN, OPT_ENCRYPT };
  43
  44 /*
  45   disable asking for a password
  46 */
  47 void popt_common_dont_ask(void)
  48 {
  49         dont_ask = true;
  50 }
  51
  52 static void popt_common_credentials_callback(poptContext con,
  53                                                 enum poptCallbackReason reason,
  54                                                 const struct poptOption *opt,
  55                                                 const char *arg, const void *data)
  56 {
  57         if (reason == POPT_CALLBACK_REASON_PRE) {
  58                 cmdline_credentials = cli_credentials_init(talloc_autofree_context());
  59                 return;
  60         }
  61
  62         if (reason == POPT_CALLBACK_REASON_POST) {
  63                 cli_credentials_guess(cmdline_credentials, cmdline_lp_ctx);
  64
  65                 if (!dont_ask) {
  66                         cli_credentials_set_cmdline_callbacks(cmdline_credentials);
  67                 }
  68
  69                 if (machine_account_pending) {
  70                         cli_credentials_set_machine_account(cmdline_credentials, cmdline_lp_ctx);
  71                 }
  72
  73                 return;
  74
  75         }
  76
  77         switch(opt->val) {
  78         case 'U':
  79         {
  80                 char *lp;
  81
  82                 cli_credentials_parse_string(cmdline_credentials, arg, CRED_SPECIFIED);
  83                 /* This breaks the abstraction, including the const above */
  84                 if ((lp=strchr_m(arg,'%'))) {
  85                         lp[0]='\0';
  86                         lp++;
  87                         /* Try to prevent this showing up in ps */
  88                         memset(lp,0,strlen(lp));
  89                 }
  90         }
  91         break;
  92
  93         case OPT_PASSWORD:
  94                 cli_credentials_set_password(cmdline_credentials, arg, CRED_SPECIFIED);
  95                 /* Try to prevent this showing up in ps */
  96                 memset(discard_const(arg),0,strlen(arg));
  97                 break;
  98
  99         case 'A':
 100                 cli_credentials_parse_file(cmdline_credentials, arg, CRED_SPECIFIED);
 101                 break;
 102
 103         case 'P':
 104                 /* Later, after this is all over, get the machine account details from the secrets.ldb */
 105                 machine_account_pending = true;
 106                 break;
 107
 108         case OPT_KERBEROS:
 109         {
 110                 bool use_kerberos = true;
 111                 /* Force us to only use kerberos */
 112                 if (arg) {
 113                         if (!set_boolean(arg, &use_kerberos)) {
 114                                 fprintf(stderr, "Error parsing -k %s. Should be "
 115                                         "-k [yes|no]\n", arg);
 116                                 exit(1);
 117                                 break;
 118                         }
 119                 }
 120
 121                 cli_credentials_set_kerberos_state(cmdline_credentials,
 122                                                    use_kerberos
 123                                                    ? CRED_MUST_USE_KERBEROS
 124                                                    : CRED_DONT_USE_KERBEROS);
 125                 break;
 126         }
 127
 128         case OPT_SIMPLE_BIND_DN:
 129         {
 130                 cli_credentials_set_bind_dn(cmdline_credentials, arg);
 131                 break;
 132         }
 133         case OPT_SIGN:
 134         {
 135                 uint32_t gensec_features;
 136
 137                 gensec_features = cli_credentials_get_gensec_features(cmdline_credentials);
 138
 139                 gensec_features |= GENSEC_FEATURE_SIGN;
 140                 cli_credentials_set_gensec_features(cmdline_credentials,
 141                                                     gensec_features);
 142                 break;
 143         }
 144         case OPT_ENCRYPT:
 145         {
 146                 uint32_t gensec_features;
 147
 148                 gensec_features = cli_credentials_get_gensec_features(cmdline_credentials);
 149
 150                 gensec_features |= GENSEC_FEATURE_SEAL;
 151                 cli_credentials_set_gensec_features(cmdline_credentials,
 152                                                     gensec_features);
 153                 break;
 154         }
 155         }
 156 }
 157
 158
 159
 160 struct poptOption popt_common_credentials[] = {
 161         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST, (void *)popt_common_credentials_callback },
 162         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "[DOMAIN/]USERNAME[%PASSWORD]" },
 163         { "no-pass", 'N', POPT_ARG_NONE, &dont_ask, 'N', "Don't ask for a password" },
 164         { "password", 0, POPT_ARG_STRING, NULL, OPT_PASSWORD, "Password" },
 165         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 166         { "machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password (implies -k)" },
 167         { "simple-bind-dn", 0, POPT_ARG_STRING, NULL, OPT_SIMPLE_BIND_DN, "DN to use for a simple bind" },
 168         { "kerberos", 'k', POPT_ARG_STRING, NULL, OPT_KERBEROS, "Use Kerberos, -k [yes|no]" },
 169         { "sign", 'S', POPT_ARG_NONE, NULL, OPT_SIGN, "Sign connection to prevent modification in transit" },
 170         { "encrypt", 'e', POPT_ARG_NONE, NULL, OPT_ENCRYPT, "Encrypt connection for privacy" },
 171         { NULL }
 172 };