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_client_prepare(TALLOC_CTX *mem_ctx, struct auth_generic_state **auth_generic_state)
  52 {
  53         struct auth_generic_state *ans;
  54         NTSTATUS nt_status;
  55         size_t idx = 0;
  56         struct gensec_settings *gensec_settings;
  57         const struct gensec_security_ops **backends = NULL;
  58         struct loadparm_context *lp_ctx;
  59
  60         ans = talloc_zero(mem_ctx, struct auth_generic_state);
  61         if (!ans) {
  62                 DEBUG(0,("auth_generic_start: talloc failed!\n"));
  63                 return NT_STATUS_NO_MEMORY;
  64         }
  65
  66         lp_ctx = loadparm_init_s3(ans, loadparm_s3_helpers());
  67         if (lp_ctx == NULL) {
  68                 DEBUG(10, ("loadparm_init_s3 failed\n"));
  69                 TALLOC_FREE(ans);
  70                 return NT_STATUS_INVALID_SERVER_STATE;
  71         }
  72
  73         gensec_settings = lpcfg_gensec_settings(ans, lp_ctx);
  74         if (lp_ctx == NULL) {
  75                 DEBUG(10, ("lpcfg_gensec_settings failed\n"));
  76                 TALLOC_FREE(ans);
  77                 return NT_STATUS_NO_MEMORY;
  78         }
  79
  80         backends = talloc_zero_array(gensec_settings,
  81                                      const struct gensec_security_ops *, 6);
  82         if (backends == NULL) {
  83                 TALLOC_FREE(ans);
  84                 return NT_STATUS_NO_MEMORY;
  85         }
  86         gensec_settings->backends = backends;
  87
  88         gensec_init();
  89
  90         /* These need to be in priority order, krb5 before NTLMSSP */
  91 #if defined(HAVE_KRB5)
  92         backends[idx++] = &gensec_gse_krb5_security_ops;
  93 #endif
  94
  95         backends[idx++] = &gensec_ntlmssp3_client_ops;
  96
  97         backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_SPNEGO);
  98         backends[idx++] = gensec_security_by_auth_type(NULL, DCERPC_AUTH_TYPE_SCHANNEL);
  99         backends[idx++] = gensec_security_by_auth_type(NULL, DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM);
 100
 101         nt_status = gensec_client_start(ans, &ans->gensec_security, gensec_settings);
 102
 103         if (!NT_STATUS_IS_OK(nt_status)) {
 104                 TALLOC_FREE(ans);
 105                 return nt_status;
 106         }
 107
 108         ans->credentials = cli_credentials_init(ans);
 109         if (!ans->credentials) {
 110                 TALLOC_FREE(ans);
 111                 return NT_STATUS_NO_MEMORY;
 112         }
 113
 114         cli_credentials_guess(ans->credentials, lp_ctx);
 115
 116         talloc_unlink(ans, lp_ctx);
 117         talloc_unlink(ans, gensec_settings);
 118
 119         *auth_generic_state = ans;
 120         return NT_STATUS_OK;
 121 }
 122
 123 NTSTATUS auth_generic_client_start(struct auth_generic_state *ans, const char *oid)
 124 {
 125         NTSTATUS status;
 126
 127         /* Transfer the credentials to gensec */
 128         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 129         if (!NT_STATUS_IS_OK(status)) {
 130                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 131                           nt_errstr(status)));
 132                 return status;
 133         }
 134         talloc_unlink(ans, ans->credentials);
 135         ans->credentials = NULL;
 136
 137         status = gensec_start_mech_by_oid(ans->gensec_security,
 138                                           oid);
 139         if (!NT_STATUS_IS_OK(status)) {
 140                 return status;
 141         }
 142
 143         return NT_STATUS_OK;
 144 }
 145
 146 NTSTATUS auth_generic_client_start_by_authtype(struct auth_generic_state *ans,
 147                                                uint8_t auth_type,
 148                                                uint8_t auth_level)
 149 {
 150         NTSTATUS status;
 151
 152         /* Transfer the credentials to gensec */
 153         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 154         if (!NT_STATUS_IS_OK(status)) {
 155                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 156                           nt_errstr(status)));
 157                 return status;
 158         }
 159         talloc_unlink(ans, ans->credentials);
 160         ans->credentials = NULL;
 161
 162         status = gensec_start_mech_by_authtype(ans->gensec_security,
 163                                                auth_type, auth_level);
 164         if (!NT_STATUS_IS_OK(status)) {
 165                 return status;
 166         }
 167
 168         return NT_STATUS_OK;
 169 }