auth/credentials/credentials.h

   1 /*
   2    samba -- Unix SMB/CIFS implementation.
   3
   4    Client credentials structure
   5
   6    Copyright (C) Jelmer Vernooij 2004-2006
   7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22 #ifndef __CREDENTIALS_H__
  23 #define __CREDENTIALS_H__
  24
  25 #include "../lib/util/time.h"
  26 #include "../lib/util/data_blob.h"
  27 #include "librpc/gen_ndr/misc.h"
  28
  29 struct cli_credentials;
  30 struct ccache_container;
  31 struct tevent_context;
  32 struct netlogon_creds_CredentialState;
  33 struct ldb_context;
  34 struct ldb_message;
  35 struct loadparm_context;
  36 struct ccache_container;
  37 struct gssapi_creds_container;
  38 struct smb_krb5_context;
  39 struct keytab_container;
  40 struct db_context;
  41 enum smb_signing_setting;
  42 enum smb_encryption_setting;
  43
  44 /* In order of priority */
  45 enum credentials_obtained {
  46         CRED_UNINITIALISED = 0,  /* We don't even have a guess yet */
  47         CRED_SMB_CONF,           /* Current value should be used, which comes from smb.conf */
  48         CRED_CALLBACK,           /* Callback should be used to obtain value */
  49         CRED_GUESS_ENV,          /* Current value should be used, which was guessed */
  50         CRED_GUESS_FILE,         /* A guess from a file (or file pointed at in env variable) */
  51         CRED_CALLBACK_RESULT,    /* Value was obtained from a callback */
  52         CRED_SPECIFIED           /* Was explicitly specified on the command-line */
  53 };
  54
  55 enum credentials_use_kerberos {
  56         /** Sometimes trying kerberos just does 'bad things', so don't */
  57         CRED_USE_KERBEROS_DISABLED = 0,
  58         /** Default, we try kerberos if available */
  59         CRED_USE_KERBEROS_DESIRED,
  60         /** Sometimes administrators are paranoid, so always do kerberos */
  61         CRED_USE_KERBEROS_REQUIRED,
  62 };
  63
  64 enum credentials_client_protection {
  65         CRED_CLIENT_PROTECTION_DEFAULT = -1,
  66         CRED_CLIENT_PROTECTION_PLAIN = 0,
  67         CRED_CLIENT_PROTECTION_SIGN,
  68         CRED_CLIENT_PROTECTION_ENCRYPT,
  69 };
  70
  71 enum credentials_krb_forwardable {
  72         CRED_AUTO_KRB_FORWARDABLE = 0, /* Default, follow library defaults */
  73         CRED_NO_KRB_FORWARDABLE,       /* not forwardable */
  74         CRED_FORCE_KRB_FORWARDABLE     /* forwardable */
  75 };
  76
  77 #define CLI_CRED_NTLM2       0x01
  78 #define CLI_CRED_NTLMv2_AUTH 0x02
  79 #define CLI_CRED_LANMAN_AUTH 0x04
  80 #define CLI_CRED_NTLM_AUTH   0x08
  81 #define CLI_CRED_CLEAR_AUTH  0x10   /* TODO:  Push cleartext auth with this flag */
  82
  83 const char *cli_credentials_get_workstation(struct cli_credentials *cred);
  84 bool cli_credentials_set_workstation(struct cli_credentials *cred,
  85                                      const char *val,
  86                                      enum credentials_obtained obtained);
  87 bool cli_credentials_is_anonymous(struct cli_credentials *cred);
  88 struct cli_credentials *cli_credentials_init(TALLOC_CTX *mem_ctx);
  89 struct cli_credentials *cli_credentials_init_server(TALLOC_CTX *mem_ctx,
  90                                                     struct loadparm_context *lp_ctx);
  91 void cli_credentials_set_anonymous(struct cli_credentials *cred);
  92 bool cli_credentials_wrong_password(struct cli_credentials *cred);
  93 const char *cli_credentials_get_password(struct cli_credentials *cred);
  94 const char *cli_credentials_get_password_and_obtained(struct cli_credentials *cred,
  95                                                       enum credentials_obtained *obtained);
  96 void cli_credentials_get_ntlm_username_domain(struct cli_credentials *cred, TALLOC_CTX *mem_ctx,
  97                                               const char **username,
  98                                               const char **domain);
  99 NTSTATUS cli_credentials_get_ntlm_response(struct cli_credentials *cred, TALLOC_CTX *mem_ctx,
 100                                            int *flags,
 101                                            DATA_BLOB challenge,
 102                                            const NTTIME *server_timestamp,
 103                                            DATA_BLOB target_info,
 104                                            DATA_BLOB *_lm_response, DATA_BLOB *_nt_response,
 105                                            DATA_BLOB *_lm_session_key, DATA_BLOB *_session_key);
 106 const char *cli_credentials_get_realm(struct cli_credentials *cred);
 107 const char *cli_credentials_get_username(struct cli_credentials *cred);
 108 const char *cli_credentials_get_username_and_obtained(struct cli_credentials *cred,
 109                                                       enum credentials_obtained *obtained);
 110 int cli_credentials_get_krb5_context(struct cli_credentials *cred,
 111                                      struct loadparm_context *lp_ctx,
 112                                      struct smb_krb5_context **smb_krb5_context);
 113 int cli_credentials_get_ccache(struct cli_credentials *cred,
 114                                struct tevent_context *event_ctx,
 115                                struct loadparm_context *lp_ctx,
 116                                struct ccache_container **ccc,
 117                                const char **error_string);
 118 int cli_credentials_get_named_ccache(struct cli_credentials *cred,
 119                                      struct tevent_context *event_ctx,
 120                                      struct loadparm_context *lp_ctx,
 121                                      char *ccache_name,
 122                                      struct ccache_container **ccc, const char **error_string);
 123 bool cli_credentials_failed_kerberos_login(struct cli_credentials *cred,
 124                                            const char *principal,
 125                                            unsigned int *count);
 126 int cli_credentials_get_keytab(struct cli_credentials *cred,
 127                                struct loadparm_context *lp_ctx,
 128                                struct keytab_container **_ktc);
 129 const char *cli_credentials_get_domain(struct cli_credentials *cred);
 130 struct netlogon_creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred);
 131 void cli_credentials_set_machine_account_pending(struct cli_credentials *cred,
 132                                                  struct loadparm_context *lp_ctx);
 133 bool cli_credentials_set_conf(struct cli_credentials *cred,
 134                               struct loadparm_context *lp_ctx);
 135 char *cli_credentials_get_principal(struct cli_credentials *cred, TALLOC_CTX *mem_ctx);
 136 int cli_credentials_get_server_gss_creds(struct cli_credentials *cred,
 137                                          struct loadparm_context *lp_ctx,
 138                                          struct gssapi_creds_container **_gcc);
 139 int cli_credentials_get_client_gss_creds(struct cli_credentials *cred,
 140                                          struct tevent_context *event_ctx,
 141                                          struct loadparm_context *lp_ctx,
 142                                          struct gssapi_creds_container **_gcc,
 143                                          const char **error_string);
 144 void cli_credentials_set_forced_sasl_mech(struct cli_credentials *creds,
 145                                           const char *sasl_mech);
 146 bool cli_credentials_set_kerberos_state(struct cli_credentials *creds,
 147                                         enum credentials_use_kerberos kerberos_state,
 148                                         enum credentials_obtained obtained);
 149 void cli_credentials_set_krb_forwardable(struct cli_credentials *creds,
 150                                          enum credentials_krb_forwardable krb_forwardable);
 151 bool cli_credentials_set_domain(struct cli_credentials *cred,
 152                                 const char *val,
 153                                 enum credentials_obtained obtained);
 154 bool cli_credentials_set_domain_callback(struct cli_credentials *cred,
 155                                          const char *(*domain_cb) (struct cli_credentials *));
 156 bool cli_credentials_set_username(struct cli_credentials *cred,
 157                                   const char *val, enum credentials_obtained obtained);
 158 bool cli_credentials_set_username_callback(struct cli_credentials *cred,
 159                                   const char *(*username_cb) (struct cli_credentials *));
 160 bool cli_credentials_set_principal(struct cli_credentials *cred,
 161                                    const char *val,
 162                                    enum credentials_obtained obtained);
 163 bool cli_credentials_set_principal_callback(struct cli_credentials *cred,
 164                                   const char *(*principal_cb) (struct cli_credentials *));
 165 bool cli_credentials_set_password(struct cli_credentials *cred,
 166                                   const char *val,
 167                                   enum credentials_obtained obtained);
 168 struct cli_credentials *cli_credentials_init_anon(TALLOC_CTX *mem_ctx);
 169 void cli_credentials_parse_string(struct cli_credentials *credentials, const char *data, enum credentials_obtained obtained);
 170 struct samr_Password *cli_credentials_get_nt_hash(struct cli_credentials *cred,
 171                                                   TALLOC_CTX *mem_ctx);
 172 struct samr_Password *cli_credentials_get_old_nt_hash(struct cli_credentials *cred,
 173                                                       TALLOC_CTX *mem_ctx);
 174 bool cli_credentials_set_realm(struct cli_credentials *cred,
 175                                const char *val,
 176                                enum credentials_obtained obtained);
 177 void cli_credentials_set_secure_channel_type(struct cli_credentials *cred,
 178                                      enum netr_SchannelType secure_channel_type);
 179 void cli_credentials_set_password_last_changed_time(struct cli_credentials *cred,
 180                                                              time_t last_change_time);
 181 void cli_credentials_set_netlogon_creds(
 182         struct cli_credentials *cred,
 183         const struct netlogon_creds_CredentialState *netlogon_creds);
 184 NTSTATUS cli_credentials_set_krb5_context(struct cli_credentials *cred,
 185                                           struct smb_krb5_context *smb_krb5_context);
 186 NTSTATUS cli_credentials_set_stored_principal(struct cli_credentials *cred,
 187                                               struct loadparm_context *lp_ctx,
 188                                               const char *serviceprincipal);
 189 NTSTATUS cli_credentials_set_machine_account(struct cli_credentials *cred,
 190                                              struct loadparm_context *lp_ctx);
 191 /**
 192  * Fill in credentials for the machine trust account, from the
 193  * secrets.ldb or passed in handle to secrets.tdb (perhaps in CTDB).
 194  *
 195  * This version is used in parts of the code that can link in the
 196  * CTDB dbwrap backend, by passing down the already open handle.
 197  *
 198  * @param cred Credentials structure to fill in
 199  * @param db_ctx dbwrap context for secrets.tdb
 200  * @retval NTSTATUS error detailing any failure
 201  */
 202 NTSTATUS cli_credentials_set_machine_account_db_ctx(struct cli_credentials *cred,
 203                                                     struct loadparm_context *lp_ctx,
 204                                                     struct db_context *db_ctx);
 205
 206 bool cli_credentials_authentication_requested(struct cli_credentials *cred);
 207 bool cli_credentials_guess(struct cli_credentials *cred,
 208                            struct loadparm_context *lp_ctx);
 209 bool cli_credentials_set_bind_dn(struct cli_credentials *cred,
 210                                  const char *bind_dn);
 211 const char *cli_credentials_get_bind_dn(struct cli_credentials *cred);
 212 bool cli_credentials_parse_file(struct cli_credentials *cred, const char *file, enum credentials_obtained obtained);
 213 char *cli_credentials_get_unparsed_name(struct cli_credentials *credentials, TALLOC_CTX *mem_ctx);
 214 bool cli_credentials_set_password_callback(struct cli_credentials *cred,
 215                                            const char *(*password_cb) (struct cli_credentials *));
 216 enum netr_SchannelType cli_credentials_get_secure_channel_type(struct cli_credentials *cred);
 217 time_t cli_credentials_get_password_last_changed_time(struct cli_credentials *cred);
 218 void cli_credentials_set_kvno(struct cli_credentials *cred,
 219                               int kvno);
 220 bool cli_credentials_set_utf16_password(struct cli_credentials *cred,
 221                                         const DATA_BLOB *password_utf16,
 222                                         enum credentials_obtained obtained);
 223 bool cli_credentials_set_old_utf16_password(struct cli_credentials *cred,
 224                                             const DATA_BLOB *password_utf16);
 225 void cli_credentials_set_password_will_be_nt_hash(struct cli_credentials *cred,
 226                                                   bool val);
 227 bool cli_credentials_is_password_nt_hash(struct cli_credentials *cred);
 228 bool cli_credentials_set_nt_hash(struct cli_credentials *cred,
 229                                  const struct samr_Password *nt_hash,
 230                                  enum credentials_obtained obtained);
 231 bool cli_credentials_set_old_nt_hash(struct cli_credentials *cred,
 232                                      const struct samr_Password *nt_hash);
 233 bool cli_credentials_set_ntlm_response(struct cli_credentials *cred,
 234                                        const DATA_BLOB *lm_response,
 235                                        const DATA_BLOB *lm_session_key,
 236                                        const DATA_BLOB *nt_response,
 237                                        const DATA_BLOB *nt_session_key,
 238                                        enum credentials_obtained obtained);
 239 int cli_credentials_set_keytab_name(struct cli_credentials *cred,
 240                                     struct loadparm_context *lp_ctx,
 241                                     const char *keytab_name,
 242                                     enum credentials_obtained obtained);
 243 bool cli_credentials_set_gensec_features(struct cli_credentials *creds,
 244                                          uint32_t gensec_features,
 245                                          enum credentials_obtained obtained);
 246 uint32_t cli_credentials_get_gensec_features(struct cli_credentials *creds);
 247 int cli_credentials_set_ccache(struct cli_credentials *cred,
 248                                struct loadparm_context *lp_ctx,
 249                                const char *name,
 250                                enum credentials_obtained obtained,
 251                                const char **error_string);
 252 bool cli_credentials_parse_password_file(struct cli_credentials *credentials, const char *file, enum credentials_obtained obtained);
 253 bool cli_credentials_parse_password_fd(struct cli_credentials *credentials,
 254                                        int fd, enum credentials_obtained obtained);
 255 void cli_credentials_invalidate_ccache(struct cli_credentials *cred,
 256                                        enum credentials_obtained obtained);
 257 void cli_credentials_set_salt_principal(struct cli_credentials *cred, const char *principal);
 258 void cli_credentials_set_impersonate_principal(struct cli_credentials *cred,
 259                                                const char *principal,
 260                                                const char *self_service);
 261 void cli_credentials_set_target_service(struct cli_credentials *cred, const char *principal);
 262 const char *cli_credentials_get_salt_principal(struct cli_credentials *cred);
 263 const char *cli_credentials_get_impersonate_principal(struct cli_credentials *cred);
 264 const char *cli_credentials_get_self_service(struct cli_credentials *cred);
 265 const char *cli_credentials_get_target_service(struct cli_credentials *cred);
 266 enum credentials_use_kerberos cli_credentials_get_kerberos_state(struct cli_credentials *creds);
 267 const char *cli_credentials_get_forced_sasl_mech(struct cli_credentials *cred);
 268 enum credentials_krb_forwardable cli_credentials_get_krb_forwardable(struct cli_credentials *creds);
 269 NTSTATUS cli_credentials_set_secrets(struct cli_credentials *cred,
 270                                      struct loadparm_context *lp_ctx,
 271                                      struct ldb_context *ldb,
 272                                      const char *base,
 273                                      const char *filter,
 274                                      char **error_string);
 275  int cli_credentials_get_kvno(struct cli_credentials *cred);
 276
 277 bool cli_credentials_set_username_callback(struct cli_credentials *cred,
 278                                   const char *(*username_cb) (struct cli_credentials *));
 279
 280 /**
 281  * Obtain the client principal for this credentials context.
 282  * @param cred credentials context
 283  * @retval The username set on this context.
 284  * @note Return value will never be NULL except by programmer error.
 285  */
 286 char *cli_credentials_get_principal_and_obtained(struct cli_credentials *cred, TALLOC_CTX *mem_ctx, enum credentials_obtained *obtained);
 287 bool cli_credentials_set_principal(struct cli_credentials *cred,
 288                                    const char *val,
 289                                    enum credentials_obtained obtained);
 290 bool cli_credentials_set_principal_callback(struct cli_credentials *cred,
 291                                   const char *(*principal_cb) (struct cli_credentials *));
 292
 293 /**
 294  * Obtain the 'old' password for this credentials context (used for join accounts).
 295  * @param cred credentials context
 296  * @retval If set, the cleartext password, otherwise NULL
 297  */
 298 const char *cli_credentials_get_old_password(struct cli_credentials *cred);
 299 bool cli_credentials_set_old_password(struct cli_credentials *cred,
 300                                       const char *val,
 301                                       enum credentials_obtained obtained);
 302 bool cli_credentials_set_domain_callback(struct cli_credentials *cred,
 303                                          const char *(*domain_cb) (struct cli_credentials *));
 304 bool cli_credentials_set_realm_callback(struct cli_credentials *cred,
 305                                         const char *(*realm_cb) (struct cli_credentials *));
 306 bool cli_credentials_set_workstation_callback(struct cli_credentials *cred,
 307                                               const char *(*workstation_cb) (struct cli_credentials *));
 308
 309 void cli_credentials_set_callback_data(struct cli_credentials *cred,
 310                                        void *callback_data);
 311 void *_cli_credentials_callback_data(struct cli_credentials *cred);
 312 #define cli_credentials_callback_data(_cred, _type) \
 313         talloc_get_type_abort(_cli_credentials_callback_data(_cred), _type)
 314 #define cli_credentials_callback_data_void(_cred) \
 315         _cli_credentials_callback_data(_cred)
 316
 317 bool cli_credentials_set_smb_signing(struct cli_credentials *cred,
 318                                      enum smb_signing_setting signing_state,
 319                                      enum credentials_obtained obtained);
 320 enum smb_signing_setting
 321 cli_credentials_get_smb_signing(struct cli_credentials *cred);
 322
 323 bool cli_credentials_set_smb_ipc_signing(struct cli_credentials *cred,
 324                                          enum smb_signing_setting ipc_signing_state,
 325                                          enum credentials_obtained obtained);
 326 enum smb_signing_setting
 327 cli_credentials_get_smb_ipc_signing(struct cli_credentials *cred);
 328
 329 bool cli_credentials_set_smb_encryption(struct cli_credentials *cred,
 330                                         enum smb_encryption_setting encryption_state,
 331                                         enum credentials_obtained obtained);
 332 enum smb_encryption_setting
 333 cli_credentials_get_smb_encryption(struct cli_credentials *cred);
 334
 335 bool cli_credentials_set_cmdline_callbacks(struct cli_credentials *cred);
 336
 337 void cli_credentials_dump(struct cli_credentials *creds);
 338
 339 /**
 340  * Return attached NETLOGON credentials
 341  */
 342 struct netlogon_creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred);
 343
 344 NTSTATUS netlogon_creds_session_encrypt(
 345         struct netlogon_creds_CredentialState *state,
 346         DATA_BLOB data);
 347
 348 int cli_credentials_get_aes256_key(struct cli_credentials *cred,
 349                                    TALLOC_CTX *mem_ctx,
 350                                    struct loadparm_context *lp_ctx,
 351                                    const char *salt,
 352                                    DATA_BLOB *aes_256);
 353
 354 #endif /* __CREDENTIALS_H__ */