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
  42 /* In order of priority */
  43 enum credentials_obtained {
  44         CRED_UNINITIALISED = 0,  /* We don't even have a guess yet */
  45         CRED_SMB_CONF,           /* Current value should be used, which comes from smb.conf */
  46         CRED_CALLBACK,           /* Callback should be used to obtain value */
  47         CRED_GUESS_ENV,          /* Current value should be used, which was guessed */
  48         CRED_GUESS_FILE,         /* A guess from a file (or file pointed at in env variable) */
  49         CRED_CALLBACK_RESULT,    /* Value was obtained from a callback */
  50         CRED_SPECIFIED           /* Was explicitly specified on the command-line */
  51 };
  52
  53 enum credentials_use_kerberos {
  54         CRED_AUTO_USE_KERBEROS = 0, /* Default, we try kerberos if available */
  55         CRED_DONT_USE_KERBEROS,     /* Sometimes trying kerberos just does 'bad things', so don't */
  56         CRED_MUST_USE_KERBEROS      /* Sometimes administrators are paranoid, so always do kerberos */
  57 };
  58
  59 enum credentials_krb_forwardable {
  60         CRED_AUTO_KRB_FORWARDABLE = 0, /* Default, follow library defaults */
  61         CRED_NO_KRB_FORWARDABLE,       /* not forwardable */
  62         CRED_FORCE_KRB_FORWARDABLE     /* forwardable */
  63 };
  64
  65 #define CLI_CRED_NTLM2       0x01
  66 #define CLI_CRED_NTLMv2_AUTH 0x02
  67 #define CLI_CRED_LANMAN_AUTH 0x04
  68 #define CLI_CRED_NTLM_AUTH   0x08
  69 #define CLI_CRED_CLEAR_AUTH  0x10   /* TODO:  Push cleartext auth with this flag */
  70
  71 const char *cli_credentials_get_workstation(struct cli_credentials *cred);
  72 bool cli_credentials_set_workstation(struct cli_credentials *cred,
  73                                      const char *val,
  74                                      enum credentials_obtained obtained);
  75 bool cli_credentials_is_anonymous(struct cli_credentials *cred);
  76 struct cli_credentials *cli_credentials_init(TALLOC_CTX *mem_ctx);
  77 void cli_credentials_set_anonymous(struct cli_credentials *cred);
  78 bool cli_credentials_wrong_password(struct cli_credentials *cred);
  79 const char *cli_credentials_get_password(struct cli_credentials *cred);
  80 void cli_credentials_get_ntlm_username_domain(struct cli_credentials *cred, TALLOC_CTX *mem_ctx,
  81                                               const char **username,
  82                                               const char **domain);
  83 NTSTATUS cli_credentials_get_ntlm_response(struct cli_credentials *cred, TALLOC_CTX *mem_ctx,
  84                                            int *flags,
  85                                            DATA_BLOB challenge,
  86                                            const NTTIME *server_timestamp,
  87                                            DATA_BLOB target_info,
  88                                            DATA_BLOB *_lm_response, DATA_BLOB *_nt_response,
  89                                            DATA_BLOB *_lm_session_key, DATA_BLOB *_session_key);
  90 const char *cli_credentials_get_realm(struct cli_credentials *cred);
  91 const char *cli_credentials_get_username(struct cli_credentials *cred);
  92 int cli_credentials_get_krb5_context(struct cli_credentials *cred,
  93                                      struct loadparm_context *lp_ctx,
  94                                      struct smb_krb5_context **smb_krb5_context);
  95 int cli_credentials_get_ccache(struct cli_credentials *cred,
  96                                struct tevent_context *event_ctx,
  97                                struct loadparm_context *lp_ctx,
  98                                struct ccache_container **ccc,
  99                                const char **error_string);
 100 int cli_credentials_get_named_ccache(struct cli_credentials *cred,
 101                                      struct tevent_context *event_ctx,
 102                                      struct loadparm_context *lp_ctx,
 103                                      char *ccache_name,
 104                                      struct ccache_container **ccc, const char **error_string);
 105 bool cli_credentials_failed_kerberos_login(struct cli_credentials *cred,
 106                                            const char *principal,
 107                                            unsigned int *count);
 108 int cli_credentials_get_keytab(struct cli_credentials *cred,
 109                                struct loadparm_context *lp_ctx,
 110                                struct keytab_container **_ktc);
 111 const char *cli_credentials_get_domain(struct cli_credentials *cred);
 112 struct netlogon_creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred);
 113 void cli_credentials_set_machine_account_pending(struct cli_credentials *cred,
 114                                                  struct loadparm_context *lp_ctx);
 115 void cli_credentials_set_conf(struct cli_credentials *cred,
 116                               struct loadparm_context *lp_ctx);
 117 char *cli_credentials_get_principal(struct cli_credentials *cred, TALLOC_CTX *mem_ctx);
 118 int cli_credentials_get_server_gss_creds(struct cli_credentials *cred,
 119                                          struct loadparm_context *lp_ctx,
 120                                          struct gssapi_creds_container **_gcc);
 121 int cli_credentials_get_client_gss_creds(struct cli_credentials *cred,
 122                                          struct tevent_context *event_ctx,
 123                                          struct loadparm_context *lp_ctx,
 124                                          struct gssapi_creds_container **_gcc,
 125                                          const char **error_string);
 126 void cli_credentials_set_forced_sasl_mech(struct cli_credentials *creds,
 127                                           const char *sasl_mech);
 128 void cli_credentials_set_kerberos_state(struct cli_credentials *creds,
 129                                         enum credentials_use_kerberos use_kerberos);
 130 void cli_credentials_set_krb_forwardable(struct cli_credentials *creds,
 131                                          enum credentials_krb_forwardable krb_forwardable);
 132 bool cli_credentials_set_domain(struct cli_credentials *cred,
 133                                 const char *val,
 134                                 enum credentials_obtained obtained);
 135 bool cli_credentials_set_domain_callback(struct cli_credentials *cred,
 136                                          const char *(*domain_cb) (struct cli_credentials *));
 137 bool cli_credentials_set_username(struct cli_credentials *cred,
 138                                   const char *val, enum credentials_obtained obtained);
 139 bool cli_credentials_set_username_callback(struct cli_credentials *cred,
 140                                   const char *(*username_cb) (struct cli_credentials *));
 141 bool cli_credentials_set_principal(struct cli_credentials *cred,
 142                                    const char *val,
 143                                    enum credentials_obtained obtained);
 144 bool cli_credentials_set_principal_callback(struct cli_credentials *cred,
 145                                   const char *(*principal_cb) (struct cli_credentials *));
 146 bool cli_credentials_set_password(struct cli_credentials *cred,
 147                                   const char *val,
 148                                   enum credentials_obtained obtained);
 149 struct cli_credentials *cli_credentials_init_anon(TALLOC_CTX *mem_ctx);
 150 void cli_credentials_parse_string(struct cli_credentials *credentials, const char *data, enum credentials_obtained obtained);
 151 struct samr_Password *cli_credentials_get_nt_hash(struct cli_credentials *cred,
 152                                                   TALLOC_CTX *mem_ctx);
 153 struct samr_Password *cli_credentials_get_old_nt_hash(struct cli_credentials *cred,
 154                                                       TALLOC_CTX *mem_ctx);
 155 bool cli_credentials_set_realm(struct cli_credentials *cred,
 156                                const char *val,
 157                                enum credentials_obtained obtained);
 158 void cli_credentials_set_secure_channel_type(struct cli_credentials *cred,
 159                                      enum netr_SchannelType secure_channel_type);
 160 void cli_credentials_set_password_last_changed_time(struct cli_credentials *cred,
 161                                                              time_t last_change_time);
 162 void cli_credentials_set_netlogon_creds(
 163         struct cli_credentials *cred,
 164         const struct netlogon_creds_CredentialState *netlogon_creds);
 165 NTSTATUS cli_credentials_set_krb5_context(struct cli_credentials *cred,
 166                                           struct smb_krb5_context *smb_krb5_context);
 167 NTSTATUS cli_credentials_set_stored_principal(struct cli_credentials *cred,
 168                                               struct loadparm_context *lp_ctx,
 169                                               const char *serviceprincipal);
 170 NTSTATUS cli_credentials_set_machine_account(struct cli_credentials *cred,
 171                                              struct loadparm_context *lp_ctx);
 172 /**
 173  * Fill in credentials for the machine trust account, from the
 174  * secrets.ldb or passed in handle to secrets.tdb (perhaps in CTDB).
 175  *
 176  * This version is used in parts of the code that can link in the
 177  * CTDB dbwrap backend, by passing down the already open handle.
 178  *
 179  * @param cred Credentials structure to fill in
 180  * @param db_ctx dbwrap context for secrets.tdb
 181  * @retval NTSTATUS error detailing any failure
 182  */
 183 NTSTATUS cli_credentials_set_machine_account_db_ctx(struct cli_credentials *cred,
 184                                                     struct loadparm_context *lp_ctx,
 185                                                     struct db_context *db_ctx);
 186
 187 bool cli_credentials_authentication_requested(struct cli_credentials *cred);
 188 void cli_credentials_guess(struct cli_credentials *cred,
 189                            struct loadparm_context *lp_ctx);
 190 bool cli_credentials_set_bind_dn(struct cli_credentials *cred,
 191                                  const char *bind_dn);
 192 const char *cli_credentials_get_bind_dn(struct cli_credentials *cred);
 193 bool cli_credentials_parse_file(struct cli_credentials *cred, const char *file, enum credentials_obtained obtained);
 194 char *cli_credentials_get_unparsed_name(struct cli_credentials *credentials, TALLOC_CTX *mem_ctx);
 195 bool cli_credentials_set_password_callback(struct cli_credentials *cred,
 196                                            const char *(*password_cb) (struct cli_credentials *));
 197 enum netr_SchannelType cli_credentials_get_secure_channel_type(struct cli_credentials *cred);
 198 time_t cli_credentials_get_password_last_changed_time(struct cli_credentials *cred);
 199 void cli_credentials_set_kvno(struct cli_credentials *cred,
 200                               int kvno);
 201 bool cli_credentials_set_utf16_password(struct cli_credentials *cred,
 202                                         const DATA_BLOB *password_utf16,
 203                                         enum credentials_obtained obtained);
 204 bool cli_credentials_set_old_utf16_password(struct cli_credentials *cred,
 205                                             const DATA_BLOB *password_utf16);
 206 void cli_credentials_set_password_will_be_nt_hash(struct cli_credentials *cred,
 207                                                   bool val);
 208 bool cli_credentials_set_nt_hash(struct cli_credentials *cred,
 209                                  const struct samr_Password *nt_hash,
 210                                  enum credentials_obtained obtained);
 211 bool cli_credentials_set_old_nt_hash(struct cli_credentials *cred,
 212                                      const struct samr_Password *nt_hash);
 213 bool cli_credentials_set_ntlm_response(struct cli_credentials *cred,
 214                                        const DATA_BLOB *lm_response,
 215                                        const DATA_BLOB *nt_response,
 216                                        enum credentials_obtained obtained);
 217 int cli_credentials_set_keytab_name(struct cli_credentials *cred,
 218                                     struct loadparm_context *lp_ctx,
 219                                     const char *keytab_name,
 220                                     enum credentials_obtained obtained);
 221 void cli_credentials_set_gensec_features(struct cli_credentials *creds, uint32_t gensec_features);
 222 uint32_t cli_credentials_get_gensec_features(struct cli_credentials *creds);
 223 int cli_credentials_set_ccache(struct cli_credentials *cred,
 224                                struct loadparm_context *lp_ctx,
 225                                const char *name,
 226                                enum credentials_obtained obtained,
 227                                const char **error_string);
 228 bool cli_credentials_parse_password_file(struct cli_credentials *credentials, const char *file, enum credentials_obtained obtained);
 229 bool cli_credentials_parse_password_fd(struct cli_credentials *credentials,
 230                                        int fd, enum credentials_obtained obtained);
 231 void cli_credentials_invalidate_ccache(struct cli_credentials *cred,
 232                                        enum credentials_obtained obtained);
 233 void cli_credentials_set_salt_principal(struct cli_credentials *cred, const char *principal);
 234 void cli_credentials_set_impersonate_principal(struct cli_credentials *cred,
 235                                                const char *principal,
 236                                                const char *self_service);
 237 void cli_credentials_set_target_service(struct cli_credentials *cred, const char *principal);
 238 const char *cli_credentials_get_salt_principal(struct cli_credentials *cred);
 239 const char *cli_credentials_get_impersonate_principal(struct cli_credentials *cred);
 240 const char *cli_credentials_get_self_service(struct cli_credentials *cred);
 241 const char *cli_credentials_get_target_service(struct cli_credentials *cred);
 242 enum credentials_use_kerberos cli_credentials_get_kerberos_state(struct cli_credentials *creds);
 243 const char *cli_credentials_get_forced_sasl_mech(struct cli_credentials *cred);
 244 enum credentials_krb_forwardable cli_credentials_get_krb_forwardable(struct cli_credentials *creds);
 245 NTSTATUS cli_credentials_set_secrets(struct cli_credentials *cred,
 246                                      struct loadparm_context *lp_ctx,
 247                                      struct ldb_context *ldb,
 248                                      const char *base,
 249                                      const char *filter,
 250                                      char **error_string);
 251  int cli_credentials_get_kvno(struct cli_credentials *cred);
 252
 253 bool cli_credentials_set_username_callback(struct cli_credentials *cred,
 254                                   const char *(*username_cb) (struct cli_credentials *));
 255
 256 /**
 257  * Obtain the client principal for this credentials context.
 258  * @param cred credentials context
 259  * @retval The username set on this context.
 260  * @note Return value will never be NULL except by programmer error.
 261  */
 262 char *cli_credentials_get_principal_and_obtained(struct cli_credentials *cred, TALLOC_CTX *mem_ctx, enum credentials_obtained *obtained);
 263 bool cli_credentials_set_principal(struct cli_credentials *cred,
 264                                    const char *val,
 265                                    enum credentials_obtained obtained);
 266 bool cli_credentials_set_principal_callback(struct cli_credentials *cred,
 267                                   const char *(*principal_cb) (struct cli_credentials *));
 268
 269 /**
 270  * Obtain the 'old' password for this credentials context (used for join accounts).
 271  * @param cred credentials context
 272  * @retval If set, the cleartext password, otherwise NULL
 273  */
 274 const char *cli_credentials_get_old_password(struct cli_credentials *cred);
 275 bool cli_credentials_set_old_password(struct cli_credentials *cred,
 276                                       const char *val,
 277                                       enum credentials_obtained obtained);
 278 bool cli_credentials_set_domain_callback(struct cli_credentials *cred,
 279                                          const char *(*domain_cb) (struct cli_credentials *));
 280 bool cli_credentials_set_realm_callback(struct cli_credentials *cred,
 281                                         const char *(*realm_cb) (struct cli_credentials *));
 282 bool cli_credentials_set_workstation_callback(struct cli_credentials *cred,
 283                                               const char *(*workstation_cb) (struct cli_credentials *));
 284
 285 void cli_credentials_set_callback_data(struct cli_credentials *cred,
 286                                        void *callback_data);
 287 void *_cli_credentials_callback_data(struct cli_credentials *cred);
 288 #define cli_credentials_callback_data(_cred, _type) \
 289         talloc_get_type_abort(_cli_credentials_callback_data(_cred), _type)
 290 #define cli_credentials_callback_data_void(_cred) \
 291         _cli_credentials_callback_data(_cred)
 292
 293 /**
 294  * Return attached NETLOGON credentials
 295  */
 296 struct netlogon_creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred);
 297
 298 NTSTATUS netlogon_creds_session_encrypt(
 299         struct netlogon_creds_CredentialState *state,
 300         DATA_BLOB data);
 301
 302 #endif /* __CREDENTIALS_H__ */