source3/libsmb/auth_generic.c

   1 /*
   2    NLTMSSP wrappers
   3
   4    Copyright (C) Andrew Tridgell      2001
   5    Copyright (C) Andrew Bartlett 2001-2003,2011
   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 "auth/ntlmssp/ntlmssp.h"
  23 #include "auth_generic.h"
  24 #include "auth/gensec/gensec.h"
  25 #include "auth/credentials/credentials.h"
  26 #include "librpc/rpc/dcerpc.h"
  27 #include "lib/param/param.h"
  28 #include "librpc/crypto/gse.h"
  29
  30 NTSTATUS auth_generic_set_username(struct auth_generic_state *ans,
  31                                    const char *user)
  32 {
  33         cli_credentials_set_username(ans->credentials, user, CRED_SPECIFIED);
  34         return NT_STATUS_OK;
  35 }
  36
  37 NTSTATUS auth_generic_set_domain(struct auth_generic_state *ans,
  38                                  const char *domain)
  39 {
  40         cli_credentials_set_domain(ans->credentials, domain, CRED_SPECIFIED);
  41         return NT_STATUS_OK;
  42 }
  43
  44 NTSTATUS auth_generic_set_password(struct auth_generic_state *ans,
  45                                    const char *password)
  46 {
  47         cli_credentials_set_password(ans->credentials, password, CRED_SPECIFIED);
  48         return NT_STATUS_OK;
  49 }
  50
  51 NTSTATUS auth_generic_set_creds(struct auth_generic_state *ans,
  52                                 struct cli_credentials *creds)
  53 {
  54         talloc_unlink(ans->credentials, creds);
  55         ans->credentials = creds;
  56         return NT_STATUS_OK;
  57 }
  58
  59 NTSTATUS auth_generic_client_prepare(TALLOC_CTX *mem_ctx, struct auth_generic_state **auth_generic_state)
  60 {
  61         struct auth_generic_state *ans;
  62         NTSTATUS nt_status;
  63         size_t idx = 0;
  64         struct gensec_settings *gensec_settings;
  65         const struct gensec_security_ops **backends = NULL;
  66         struct loadparm_context *lp_ctx;
  67         bool ok;
  68
  69         ans = talloc_zero(mem_ctx, struct auth_generic_state);
  70         if (!ans) {
  71                 DEBUG(0,("auth_generic_start: talloc failed!\n"));
  72                 return NT_STATUS_NO_MEMORY;
  73         }
  74
  75         lp_ctx = loadparm_init_s3(ans, loadparm_s3_helpers());
  76         if (lp_ctx == NULL) {
  77                 DEBUG(10, ("loadparm_init_s3 failed\n"));
  78                 TALLOC_FREE(ans);
  79                 return NT_STATUS_INVALID_SERVER_STATE;
  80         }
  81
  82         gensec_settings = lpcfg_gensec_settings(ans, lp_ctx);
  83         if (lp_ctx == NULL) {
  84                 DEBUG(10, ("lpcfg_gensec_settings failed\n"));
  85                 TALLOC_FREE(ans);
  86                 return NT_STATUS_NO_MEMORY;
  87         }
  88
  89         backends = talloc_zero_array(gensec_settings,
  90                                      const struct gensec_security_ops *, 7);
  91         if (backends == NULL) {
  92                 TALLOC_FREE(ans);
  93                 return NT_STATUS_NO_MEMORY;
  94         }
  95         gensec_settings->backends = backends;
  96
  97         gensec_init();
  98
  99         /* These need to be in priority order, krb5 before NTLMSSP */
 100 #if defined(HAVE_KRB5)
 101         backends[idx++] = &gensec_gse_krb5_security_ops;
 102 #endif
 103
 104         backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_NTLMSSP);
 105         backends[idx++] = gensec_security_by_name(NULL, "ntlmssp_resume_ccache");
 106
 107         backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_SPNEGO);
 108         backends[idx++] = gensec_security_by_auth_type(NULL, DCERPC_AUTH_TYPE_SCHANNEL);
 109         backends[idx++] = gensec_security_by_auth_type(NULL, DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM);
 110
 111         nt_status = gensec_client_start(ans, &ans->gensec_security, gensec_settings);
 112
 113         if (!NT_STATUS_IS_OK(nt_status)) {
 114                 TALLOC_FREE(ans);
 115                 return nt_status;
 116         }
 117
 118         ans->credentials = cli_credentials_init(ans);
 119         if (!ans->credentials) {
 120                 TALLOC_FREE(ans);
 121                 return NT_STATUS_NO_MEMORY;
 122         }
 123
 124         ok = cli_credentials_guess(ans->credentials, lp_ctx);
 125         if (!ok) {
 126                 TALLOC_FREE(ans);
 127                 return NT_STATUS_INTERNAL_ERROR;
 128         }
 129
 130         talloc_unlink(ans, lp_ctx);
 131         talloc_unlink(ans, gensec_settings);
 132
 133         *auth_generic_state = ans;
 134         return NT_STATUS_OK;
 135 }
 136
 137 NTSTATUS auth_generic_client_start(struct auth_generic_state *ans, const char *oid)
 138 {
 139         NTSTATUS status;
 140
 141         /* Transfer the credentials to gensec */
 142         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 143         if (!NT_STATUS_IS_OK(status)) {
 144                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 145                           nt_errstr(status)));
 146                 return status;
 147         }
 148         talloc_unlink(ans, ans->credentials);
 149         ans->credentials = NULL;
 150
 151         status = gensec_start_mech_by_oid(ans->gensec_security,
 152                                           oid);
 153         if (!NT_STATUS_IS_OK(status)) {
 154                 return status;
 155         }
 156
 157         return NT_STATUS_OK;
 158 }
 159
 160 NTSTATUS auth_generic_client_start_by_name(struct auth_generic_state *ans,
 161                                            const char *name)
 162 {
 163         NTSTATUS status;
 164
 165         /* Transfer the credentials to gensec */
 166         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 167         if (!NT_STATUS_IS_OK(status)) {
 168                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 169                           nt_errstr(status)));
 170                 return status;
 171         }
 172         talloc_unlink(ans, ans->credentials);
 173         ans->credentials = NULL;
 174
 175         status = gensec_start_mech_by_name(ans->gensec_security, name);
 176         if (!NT_STATUS_IS_OK(status)) {
 177                 return status;
 178         }
 179
 180         return NT_STATUS_OK;
 181 }
 182
 183 NTSTATUS auth_generic_client_start_by_authtype(struct auth_generic_state *ans,
 184                                                uint8_t auth_type,
 185                                                uint8_t auth_level)
 186 {
 187         NTSTATUS status;
 188
 189         /* Transfer the credentials to gensec */
 190         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 191         if (!NT_STATUS_IS_OK(status)) {
 192                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 193                           nt_errstr(status)));
 194                 return status;
 195         }
 196         talloc_unlink(ans, ans->credentials);
 197         ans->credentials = NULL;
 198
 199         status = gensec_start_mech_by_authtype(ans->gensec_security,
 200                                                auth_type, auth_level);
 201         if (!NT_STATUS_IS_OK(status)) {
 202                 return status;
 203         }
 204
 205         return NT_STATUS_OK;
 206 }
 207
 208 NTSTATUS auth_generic_client_start_by_sasl(struct auth_generic_state *ans,
 209                                            const char **sasl_list)
 210 {
 211         NTSTATUS status;
 212
 213         /* Transfer the credentials to gensec */
 214         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 215         if (!NT_STATUS_IS_OK(status)) {
 216                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 217                           nt_errstr(status)));
 218                 return status;
 219         }
 220         talloc_unlink(ans, ans->credentials);
 221         ans->credentials = NULL;
 222
 223         status = gensec_start_mech_by_sasl_list(ans->gensec_security, sasl_list);
 224         if (!NT_STATUS_IS_OK(status)) {
 225                 return status;
 226         }
 227
 228         return NT_STATUS_OK;
 229 }