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         struct loadparm_context *lp_ctx;
  58
  59         ans = talloc_zero(mem_ctx, struct auth_generic_state);
  60         if (!ans) {
  61                 DEBUG(0,("auth_generic_start: talloc failed!\n"));
  62                 return NT_STATUS_NO_MEMORY;
  63         }
  64
  65         lp_ctx = loadparm_init_s3(ans, loadparm_s3_helpers());
  66         if (lp_ctx == NULL) {
  67                 DEBUG(10, ("loadparm_init_s3 failed\n"));
  68                 TALLOC_FREE(ans);
  69                 return NT_STATUS_INVALID_SERVER_STATE;
  70         }
  71
  72         gensec_settings = lpcfg_gensec_settings(ans, lp_ctx);
  73         if (lp_ctx == NULL) {
  74                 DEBUG(10, ("lpcfg_gensec_settings failed\n"));
  75                 TALLOC_FREE(ans);
  76                 return NT_STATUS_NO_MEMORY;
  77         }
  78
  79         gensec_settings->backends = talloc_zero_array(gensec_settings,
  80                                         struct gensec_security_ops *, 4);
  81         if (gensec_settings->backends == NULL) {
  82                 TALLOC_FREE(ans);
  83                 return NT_STATUS_NO_MEMORY;
  84         }
  85
  86         gensec_init();
  87
  88         /* These need to be in priority order, krb5 before NTLMSSP */
  89 #if defined(HAVE_KRB5)
  90         gensec_settings->backends[idx++] = &gensec_gse_krb5_security_ops;
  91 #endif
  92
  93         gensec_settings->backends[idx++] = &gensec_ntlmssp3_client_ops;
  94
  95         gensec_settings->backends[idx++] = gensec_security_by_oid(NULL,
  96                                                 GENSEC_OID_SPNEGO);
  97
  98         nt_status = gensec_client_start(ans, &ans->gensec_security, gensec_settings);
  99
 100         if (!NT_STATUS_IS_OK(nt_status)) {
 101                 TALLOC_FREE(ans);
 102                 return nt_status;
 103         }
 104
 105         ans->credentials = cli_credentials_init(ans);
 106         if (!ans->credentials) {
 107                 TALLOC_FREE(ans);
 108                 return NT_STATUS_NO_MEMORY;
 109         }
 110
 111         cli_credentials_guess(ans->credentials, lp_ctx);
 112
 113         talloc_unlink(ans, lp_ctx);
 114         talloc_unlink(ans, gensec_settings);
 115
 116         *auth_generic_state = ans;
 117         return NT_STATUS_OK;
 118 }
 119
 120 NTSTATUS auth_generic_client_start(struct auth_generic_state *ans, const char *oid)
 121 {
 122         NTSTATUS status;
 123
 124         /* Transfer the credentials to gensec */
 125         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 126         if (!NT_STATUS_IS_OK(status)) {
 127                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 128                           nt_errstr(status)));
 129                 return status;
 130         }
 131         talloc_unlink(ans, ans->credentials);
 132         ans->credentials = NULL;
 133
 134         status = gensec_start_mech_by_oid(ans->gensec_security,
 135                                           oid);
 136         if (!NT_STATUS_IS_OK(status)) {
 137                 return status;
 138         }
 139
 140         return NT_STATUS_OK;
 141 }
 142
 143 NTSTATUS auth_generic_client_start_by_authtype(struct auth_generic_state *ans,
 144                                                uint8_t auth_type,
 145                                                uint8_t auth_level)
 146 {
 147         NTSTATUS status;
 148
 149         /* Transfer the credentials to gensec */
 150         status = gensec_set_credentials(ans->gensec_security, ans->credentials);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
 153                           nt_errstr(status)));
 154                 return status;
 155         }
 156         talloc_unlink(ans, ans->credentials);
 157         ans->credentials = NULL;
 158
 159         status = gensec_start_mech_by_authtype(ans->gensec_security,
 160                                                auth_type, auth_level);
 161         if (!NT_STATUS_IS_OK(status)) {
 162                 return status;
 163         }
 164
 165         return NT_STATUS_OK;
 166 }