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
  68         ans = talloc_zero(mem_ctx, struct auth_generic_state);
  69         if (!ans) {
  70                 DEBUG(0,("auth_generic_start: talloc failed!\n"));
  71                 return NT_STATUS_NO_MEMORY;
  72         }
  73
  74         lp_ctx = loadparm_init_s3(ans, loadparm_s3_helpers());
  75         if (lp_ctx == NULL) {
  76                 DEBUG(10, ("loadparm_init_s3 failed\n"));
  77                 TALLOC_FREE(ans);
  78                 return NT_STATUS_INVALID_SERVER_STATE;
  79         }
  80
  81         gensec_settings = lpcfg_gensec_settings(ans, lp_ctx);
  82         if (lp_ctx == NULL) {
  83                 DEBUG(10, ("lpcfg_gensec_settings failed\n"));
  84                 TALLOC_FREE(ans);
  85                 return NT_STATUS_NO_MEMORY;
  86         }
  87
  88         backends = talloc_zero_array(gensec_settings,
  89                                      const struct gensec_security_ops *, 6);
  90         if (backends == NULL) {
  91                 TALLOC_FREE(ans);
  92                 return NT_STATUS_NO_MEMORY;
  93         }
  94         gensec_settings->backends = backends;
  95
  96         gensec_init();
  97
  98         /* These need to be in priority order, krb5 before NTLMSSP */
  99 #if defined(HAVE_KRB5)
 100         backends[idx++] = &gensec_gse_krb5_security_ops;
 101 #endif
 102
 103         backends[idx++] = &gensec_ntlmssp3_client_ops;
 104
 105         backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_SPNEGO);
 106         backends[idx++] = gensec_security_by_auth_type(NULL, DCERPC_AUTH_TYPE_SCHANNEL);
 107         backends[idx++] = gensec_security_by_auth_type(NULL, DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM);
 108
 109         nt_status = gensec_client_start(ans, &ans->gensec_security, gensec_settings);
 110
 111         if (!NT_STATUS_IS_OK(nt_status)) {
 112                 TALLOC_FREE(ans);
 113                 return nt_status;
 114         }
 115
 116         ans->credentials = cli_credentials_init(ans);
 117         if (!ans->credentials) {
 118                 TALLOC_FREE(ans);
 119                 return NT_STATUS_NO_MEMORY;
 120         }
 121
 122         cli_credentials_guess(ans->credentials, lp_ctx);
 123
 124         talloc_unlink(ans, lp_ctx);
 125         talloc_unlink(ans, gensec_settings);
 126
 127         *auth_generic_state = ans;
 128         return NT_STATUS_OK;
 129 }
 130
 131 NTSTATUS auth_generic_client_start(struct auth_generic_state *ans, const char *oid)
 132 {
 133         NTSTATUS status;
 134
 135         /* Transfer the credentials to gensec */
 136         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 137         if (!NT_STATUS_IS_OK(status)) {
 138                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 139                           nt_errstr(status)));
 140                 return status;
 141         }
 142         talloc_unlink(ans, ans->credentials);
 143         ans->credentials = NULL;
 144
 145         status = gensec_start_mech_by_oid(ans->gensec_security,
 146                                           oid);
 147         if (!NT_STATUS_IS_OK(status)) {
 148                 return status;
 149         }
 150
 151         return NT_STATUS_OK;
 152 }
 153
 154 NTSTATUS auth_generic_client_start_by_authtype(struct auth_generic_state *ans,
 155                                                uint8_t auth_type,
 156                                                uint8_t auth_level)
 157 {
 158         NTSTATUS status;
 159
 160         /* Transfer the credentials to gensec */
 161         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 162         if (!NT_STATUS_IS_OK(status)) {
 163                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 164                           nt_errstr(status)));
 165                 return status;
 166         }
 167         talloc_unlink(ans, ans->credentials);
 168         ans->credentials = NULL;
 169
 170         status = gensec_start_mech_by_authtype(ans->gensec_security,
 171                                                auth_type, auth_level);
 172         if (!NT_STATUS_IS_OK(status)) {
 173                 return status;
 174         }
 175
 176         return NT_STATUS_OK;
 177 }