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  *              --krb5-ccache
  38  */
  39
  40 static bool dont_ask;
  41 static bool machine_account_pending;
  42
  43 enum opt { OPT_SIMPLE_BIND_DN, OPT_PASSWORD, OPT_KERBEROS, OPT_SIGN, OPT_ENCRYPT, OPT_KRB5_CCACHE };
  44
  45 static void popt_common_credentials_callback(poptContext con,
  46                                                 enum poptCallbackReason reason,
  47                                                 const struct poptOption *opt,
  48                                                 const char *arg, const void *data)
  49 {
  50         if (reason == POPT_CALLBACK_REASON_PRE) {
  51                 cmdline_credentials = cli_credentials_init(talloc_autofree_context());
  52                 return;
  53         }
  54
  55         if (reason == POPT_CALLBACK_REASON_POST) {
  56                 cli_credentials_guess(cmdline_credentials, cmdline_lp_ctx);
  57
  58                 if (!dont_ask) {
  59                         cli_credentials_set_cmdline_callbacks(cmdline_credentials);
  60                 }
  61
  62                 if (machine_account_pending) {
  63                         cli_credentials_set_machine_account(cmdline_credentials, cmdline_lp_ctx);
  64                 }
  65
  66                 return;
  67
  68         }
  69
  70         switch(opt->val) {
  71         case 'U':
  72         {
  73                 char *lp;
  74
  75                 cli_credentials_parse_string(cmdline_credentials, arg, CRED_SPECIFIED);
  76                 /* This breaks the abstraction, including the const above */
  77                 if ((lp=strchr_m(arg,'%'))) {
  78                         lp[0]='\0';
  79                         lp++;
  80                         /* Try to prevent this showing up in ps */
  81                         memset(lp,0,strlen(lp));
  82                 }
  83         }
  84         break;
  85
  86         case OPT_PASSWORD:
  87                 cli_credentials_set_password(cmdline_credentials, arg, CRED_SPECIFIED);
  88                 /* Try to prevent this showing up in ps */
  89                 memset(discard_const(arg),0,strlen(arg));
  90                 break;
  91
  92         case 'A':
  93                 cli_credentials_parse_file(cmdline_credentials, arg, CRED_SPECIFIED);
  94                 break;
  95
  96         case 'P':
  97                 /* Later, after this is all over, get the machine account details from the secrets.ldb */
  98                 machine_account_pending = true;
  99                 break;
 100
 101         case OPT_KERBEROS:
 102         {
 103                 bool use_kerberos = true;
 104                 /* Force us to only use kerberos */
 105                 if (arg) {
 106                         if (!set_boolean(arg, &use_kerberos)) {
 107                                 fprintf(stderr, "Error parsing -k %s. Should be "
 108                                         "-k [yes|no]\n", arg);
 109                                 exit(1);
 110                                 break;
 111                         }
 112                 }
 113
 114                 cli_credentials_set_kerberos_state(cmdline_credentials,
 115                                                    use_kerberos
 116                                                    ? CRED_MUST_USE_KERBEROS
 117                                                    : CRED_DONT_USE_KERBEROS);
 118                 break;
 119         }
 120
 121         case OPT_SIMPLE_BIND_DN:
 122         {
 123                 cli_credentials_set_bind_dn(cmdline_credentials, arg);
 124                 break;
 125         }
 126         case OPT_KRB5_CCACHE:
 127         {
 128                 const char *error_string;
 129                 if (cli_credentials_set_ccache(cmdline_credentials, cmdline_lp_ctx, arg, CRED_SPECIFIED,
 130                                                &error_string) != 0) {
 131                         fprintf(stderr, "Error reading krb5 credentials cache: '%s' %s", arg, error_string);
 132                         exit(1);
 133                 }
 134                 break;
 135         }
 136         case OPT_SIGN:
 137         {
 138                 uint32_t gensec_features;
 139
 140                 gensec_features = cli_credentials_get_gensec_features(cmdline_credentials);
 141
 142                 gensec_features |= GENSEC_FEATURE_SIGN;
 143                 cli_credentials_set_gensec_features(cmdline_credentials,
 144                                                     gensec_features);
 145                 break;
 146         }
 147         case OPT_ENCRYPT:
 148         {
 149                 uint32_t gensec_features;
 150
 151                 gensec_features = cli_credentials_get_gensec_features(cmdline_credentials);
 152
 153                 gensec_features |= GENSEC_FEATURE_SEAL;
 154                 cli_credentials_set_gensec_features(cmdline_credentials,
 155                                                     gensec_features);
 156                 break;
 157         }
 158         }
 159 }
 160
 161
 162
 163 struct poptOption popt_common_credentials4[] = {
 164         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST, (void *)popt_common_credentials_callback },
 165         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "[DOMAIN/]USERNAME[%PASSWORD]" },
 166         { "no-pass", 'N', POPT_ARG_NONE, &dont_ask, 'N', "Don't ask for a password" },
 167         { "password", 0, POPT_ARG_STRING, NULL, OPT_PASSWORD, "Password" },
 168         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 169         { "machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password (implies -k)" },
 170         { "simple-bind-dn", 0, POPT_ARG_STRING, NULL, OPT_SIMPLE_BIND_DN, "DN to use for a simple bind" },
 171         { "kerberos", 'k', POPT_ARG_STRING, NULL, OPT_KERBEROS, "Use Kerberos, -k [yes|no]" },
 172         { "krb5-ccache", 0, POPT_ARG_STRING, NULL, OPT_KRB5_CCACHE, "Credentials cache location for Kerberos" },
 173         { "sign", 'S', POPT_ARG_NONE, NULL, OPT_SIGN, "Sign connection to prevent modification in transit" },
 174         { "encrypt", 'e', POPT_ARG_NONE, NULL, OPT_ENCRYPT, "Encrypt connection for privacy" },
 175         { NULL }
 176 };