source3/winbindd/winbindd.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind daemon for ntdom nss module
   5
   6    Copyright (C) Tim Potter 2000
   7    Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
   8
   9    This library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public
  11    License as published by the Free Software Foundation; either
  12    version 3 of the License, or (at your option) any later version.
  13
  14    This library 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 GNU
  17    Library General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #ifndef _WINBINDD_H
  24 #define _WINBINDD_H
  25
  26 #include "nsswitch/winbind_struct_protocol.h"
  27 #include "nsswitch/libwbclient/wbclient.h"
  28 #include "librpc/gen_ndr/wbint.h"
  29
  30 #ifdef HAVE_LIBNSCD
  31 #include <libnscd.h>
  32 #endif
  33
  34 #ifdef HAVE_SYS_MMAN_H
  35 #include <sys/mman.h>
  36 #endif
  37
  38 #undef DBGC_CLASS
  39 #define DBGC_CLASS DBGC_WINBIND
  40
  41 #define WB_REPLACE_CHAR         '_'
  42
  43 struct sid_ctr {
  44         DOM_SID *sid;
  45         bool finished;
  46         const char *domain;
  47         const char *name;
  48         enum lsa_SidType type;
  49 };
  50
  51 struct winbindd_cli_state {
  52         struct winbindd_cli_state *prev, *next;   /* Linked list pointers */
  53         int sock;                                 /* Open socket from client */
  54         pid_t pid;                                /* pid of client */
  55         time_t last_access;                       /* Time of last access (read or write) */
  56         bool privileged;                           /* Is the client 'privileged' */
  57
  58         TALLOC_CTX *mem_ctx;                      /* memory per request */
  59         NTSTATUS (*recv_fn)(struct tevent_req *req,
  60                             struct winbindd_response *presp);
  61         struct winbindd_request *request;         /* Request from client */
  62         struct tevent_queue *out_queue;
  63         struct winbindd_response *response;        /* Respose to client */
  64         bool getpwent_initialized;                /* Has getpwent_state been
  65                                                    * initialized? */
  66         bool getgrent_initialized;                /* Has getgrent_state been
  67                                                    * initialized? */
  68         struct getent_state *getpwent_state;      /* State for getpwent() */
  69         struct getent_state *getgrent_state;      /* State for getgrent() */
  70 };
  71
  72 /* State between get{pw,gr}ent() calls */
  73
  74 struct getent_state {
  75         struct getent_state *prev, *next;
  76         void *sam_entries;
  77         uint32 sam_entry_index, num_sam_entries;
  78         bool got_sam_entries;
  79         fstring domain_name;
  80 };
  81
  82 /* Storage for cached getpwent() user entries */
  83
  84 struct getpwent_user {
  85         fstring name;                        /* Account name */
  86         fstring gecos;                       /* User information */
  87         fstring homedir;                     /* User Home Directory */
  88         fstring shell;                       /* User Login Shell */
  89         DOM_SID user_sid;                    /* NT user and primary group SIDs */
  90         DOM_SID group_sid;
  91 };
  92
  93 /* Our connection to the DC */
  94
  95 struct winbindd_cm_conn {
  96         struct cli_state *cli;
  97
  98         struct rpc_pipe_client *samr_pipe;
  99         struct policy_handle sam_connect_handle, sam_domain_handle;
 100
 101         struct rpc_pipe_client *lsa_pipe;
 102         struct policy_handle lsa_policy;
 103
 104         struct rpc_pipe_client *netlogon_pipe;
 105 };
 106
 107 struct winbindd_async_request;
 108
 109 /* Async child */
 110
 111 struct winbindd_domain;
 112
 113 struct winbindd_child_dispatch_table {
 114         const char *name;
 115         enum winbindd_cmd struct_cmd;
 116         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 117                                           struct winbindd_cli_state *state);
 118 };
 119
 120 struct winbindd_child {
 121         struct winbindd_child *next, *prev;
 122
 123         pid_t pid;
 124         struct winbindd_domain *domain;
 125         char *logfilename;
 126
 127         int sock;
 128         struct tevent_queue *queue;
 129         struct rpc_pipe_client *rpccli;
 130
 131         struct timed_event *lockout_policy_event;
 132         struct timed_event *machine_password_change_event;
 133
 134         const struct winbindd_child_dispatch_table *table;
 135 };
 136
 137 /* Structures to hold per domain information */
 138
 139 struct winbindd_domain {
 140         fstring name;                          /* Domain name (NetBIOS) */
 141         fstring alt_name;                      /* alt Domain name, if any (FQDN for ADS) */
 142         fstring forest_name;                   /* Name of the AD forest we're in */
 143         DOM_SID sid;                           /* SID for this domain */
 144         uint32 domain_flags;                   /* Domain flags from netlogon.h */
 145         uint32 domain_type;                    /* Domain type from netlogon.h */
 146         uint32 domain_trust_attribs;           /* Trust attribs from netlogon.h */
 147         bool initialized;                      /* Did we already ask for the domain mode? */
 148         bool native_mode;                      /* is this a win2k domain in native mode ? */
 149         bool active_directory;                 /* is this a win2k active directory ? */
 150         bool primary;                          /* is this our primary domain ? */
 151         bool internal;                         /* BUILTIN and member SAM */
 152         bool online;                           /* is this domain available ? */
 153         time_t startup_time;                   /* When we set "startup" true. */
 154         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 155
 156         bool can_do_samlogon_ex; /* Due to the lack of finer control what type
 157                                   * of DC we have, let us try to do a
 158                                   * credential-chain less samlogon_ex call
 159                                   * with AD and schannel. If this fails with
 160                                   * DCERPC_FAULT_OP_RNG_ERROR, then set this
 161                                   * to False. This variable is around so that
 162                                   * we don't have to try _ex every time. */
 163
 164         /* Lookup methods for this domain (LDAP or RPC) */
 165         struct winbindd_methods *methods;
 166
 167         /* the backend methods are used by the cache layer to find the right
 168            backend */
 169         struct winbindd_methods *backend;
 170
 171         /* Private data for the backends (used for connection cache) */
 172
 173         void *private_data;
 174
 175         /*
 176          * idmap config settings, used to tell the idmap child which
 177          * special domain config to use for a mapping
 178          */
 179         bool have_idmap_config;
 180         uint32_t id_range_low, id_range_high;
 181
 182         /* A working DC */
 183         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 184         fstring dcname;
 185         struct sockaddr_storage dcaddr;
 186
 187         /* Sequence number stuff */
 188
 189         time_t last_seq_check;
 190         uint32 sequence_number;
 191         NTSTATUS last_status;
 192
 193         /* The smb connection */
 194
 195         struct winbindd_cm_conn conn;
 196
 197         /* The child pid we're talking to */
 198
 199         struct winbindd_child child;
 200
 201         /* Callback we use to try put us back online. */
 202
 203         uint32 check_online_timeout;
 204         struct timed_event *check_online_event;
 205
 206         /* Linked list info */
 207
 208         struct winbindd_domain *prev, *next;
 209 };
 210
 211 /* per-domain methods. This is how LDAP vs RPC is selected
 212  */
 213 struct winbindd_methods {
 214         /* does this backend provide a consistent view of the data? (ie. is the primary group
 215            always correct) */
 216         bool consistent;
 217
 218         /* get a list of users, returning a wbint_userinfo for each one */
 219         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 220                                    TALLOC_CTX *mem_ctx,
 221                                    uint32 *num_entries,
 222                                    struct wbint_userinfo **info);
 223
 224         /* get a list of domain groups */
 225         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 226                                     TALLOC_CTX *mem_ctx,
 227                                     uint32 *num_entries,
 228                                     struct acct_info **info);
 229
 230         /* get a list of domain local groups */
 231         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 232                                     TALLOC_CTX *mem_ctx,
 233                                     uint32 *num_entries,
 234                                     struct acct_info **info);
 235
 236         /* convert one user or group name to a sid */
 237         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 238                                 TALLOC_CTX *mem_ctx,
 239                                 const char *domain_name,
 240                                 const char *name,
 241                                 uint32_t flags,
 242                                 DOM_SID *sid,
 243                                 enum lsa_SidType *type);
 244
 245         /* convert a sid to a user or group name */
 246         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 247                                 TALLOC_CTX *mem_ctx,
 248                                 const DOM_SID *sid,
 249                                 char **domain_name,
 250                                 char **name,
 251                                 enum lsa_SidType *type);
 252
 253         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 254                                   TALLOC_CTX *mem_ctx,
 255                                   const DOM_SID *domain_sid,
 256                                   uint32 *rids,
 257                                   size_t num_rids,
 258                                   char **domain_name,
 259                                   char ***names,
 260                                   enum lsa_SidType **types);
 261
 262         /* lookup user info for a given SID */
 263         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 264                                TALLOC_CTX *mem_ctx,
 265                                const DOM_SID *user_sid,
 266                                struct wbint_userinfo *user_info);
 267
 268         /* lookup all groups that a user is a member of. The backend
 269            can also choose to lookup by username or rid for this
 270            function */
 271         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 272                                       TALLOC_CTX *mem_ctx,
 273                                       const DOM_SID *user_sid,
 274                                       uint32 *num_groups, DOM_SID **user_gids);
 275
 276         /* Lookup all aliases that the sids delivered are member of. This is
 277          * to implement 'domain local groups' correctly */
 278         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 279                                        TALLOC_CTX *mem_ctx,
 280                                        uint32 num_sids,
 281                                        const DOM_SID *sids,
 282                                        uint32 *num_aliases,
 283                                        uint32 **alias_rids);
 284
 285         /* find all members of the group with the specified group_rid */
 286         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 287                                     TALLOC_CTX *mem_ctx,
 288                                     const DOM_SID *group_sid,
 289                                     uint32 *num_names,
 290                                     DOM_SID **sid_mem, char ***names,
 291                                     uint32 **name_types);
 292
 293         /* return the current global sequence number */
 294         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32 *seq);
 295
 296         /* return the lockout policy */
 297         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 298                                    TALLOC_CTX *mem_ctx,
 299                                    struct samr_DomInfo12 *lockout_policy);
 300
 301         /* return the lockout policy */
 302         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 303                                     TALLOC_CTX *mem_ctx,
 304                                     struct samr_DomInfo1 *password_policy);
 305
 306         /* enumerate trusted domains */
 307         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 308                                     TALLOC_CTX *mem_ctx,
 309                                     uint32 *num_domains,
 310                                     char ***names,
 311                                     char ***alt_names,
 312                                     DOM_SID **dom_sids);
 313 };
 314
 315 /* Filled out by IDMAP backends */
 316 struct winbindd_idmap_methods {
 317   /* Called when backend is first loaded */
 318   bool (*init)(void);
 319
 320   bool (*get_sid_from_uid)(uid_t uid, DOM_SID *sid);
 321   bool (*get_sid_from_gid)(gid_t gid, DOM_SID *sid);
 322
 323   bool (*get_uid_from_sid)(DOM_SID *sid, uid_t *uid);
 324   bool (*get_gid_from_sid)(DOM_SID *sid, gid_t *gid);
 325
 326   /* Called when backend is unloaded */
 327   bool (*close)(void);
 328   /* Called to dump backend status */
 329   void (*status)(void);
 330 };
 331
 332 /* Data structures for dealing with the trusted domain cache */
 333
 334 struct winbindd_tdc_domain {
 335         const char *domain_name;
 336         const char *dns_name;
 337         DOM_SID sid;
 338         uint32 trust_flags;
 339         uint32 trust_attribs;
 340         uint32 trust_type;
 341 };
 342
 343 /* Switch for listing users or groups */
 344 enum ent_type {
 345         LIST_USERS = 0,
 346         LIST_GROUPS,
 347 };
 348
 349 struct WINBINDD_MEMORY_CREDS {
 350         struct WINBINDD_MEMORY_CREDS *next, *prev;
 351         const char *username; /* lookup key. */
 352         uid_t uid;
 353         int ref_count;
 354         size_t len;
 355         uint8_t *nt_hash; /* Base pointer for the following 2 */
 356         uint8_t *lm_hash;
 357         char *pass;
 358 };
 359
 360 struct WINBINDD_CCACHE_ENTRY {
 361         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 362         const char *principal_name;
 363         const char *ccname;
 364         const char *service;
 365         const char *username;
 366         const char *realm;
 367         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 368         int ref_count;
 369         uid_t uid;
 370         time_t create_time;
 371         time_t renew_until;
 372         time_t refresh_time;
 373         struct timed_event *event;
 374 };
 375
 376 #include "winbindd/winbindd_proto.h"
 377
 378 #define WINBINDD_ESTABLISH_LOOP 30
 379 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 380 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 381 #define DOM_SEQUENCE_NONE ((uint32)-1)
 382
 383 #define IS_DOMAIN_OFFLINE(x) ( lp_winbind_offline_logon() && \
 384                                ( get_global_winbindd_state_offline() \
 385                                  || !(x)->online ) )
 386 #define IS_DOMAIN_ONLINE(x) (!IS_DOMAIN_OFFLINE(x))
 387
 388 #endif /* _WINBINDD_H */