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 *getgrent_state;      /* State for getgrent() */
  69
  70         struct getpwent_state *pwent_state; /* State for getpwent() */
  71         struct getgrent_state *grent_state; /* State for getgrent() */
  72 };
  73
  74 /* State between get{pw,gr}ent() calls */
  75
  76 struct getent_state {
  77         struct getent_state *prev, *next;
  78         void *sam_entries;
  79         uint32 sam_entry_index, num_sam_entries;
  80         bool got_sam_entries;
  81         fstring domain_name;
  82 };
  83
  84 struct getpwent_state {
  85         struct winbindd_domain *domain;
  86         int next_user;
  87         int num_users;
  88         struct wbint_userinfo *users;
  89 };
  90
  91 struct getgrent_state {
  92         struct winbindd_domain *domain;
  93         int next_group;
  94         int num_groups;
  95         struct wbint_Principal *groups;
  96 };
  97
  98 /* Storage for cached getpwent() user entries */
  99
 100 struct getpwent_user {
 101         fstring name;                        /* Account name */
 102         fstring gecos;                       /* User information */
 103         fstring homedir;                     /* User Home Directory */
 104         fstring shell;                       /* User Login Shell */
 105         DOM_SID user_sid;                    /* NT user and primary group SIDs */
 106         DOM_SID group_sid;
 107 };
 108
 109 /* Our connection to the DC */
 110
 111 struct winbindd_cm_conn {
 112         struct cli_state *cli;
 113
 114         struct rpc_pipe_client *samr_pipe;
 115         struct policy_handle sam_connect_handle, sam_domain_handle;
 116
 117         struct rpc_pipe_client *lsa_pipe;
 118         struct rpc_pipe_client *lsa_pipe_tcp;
 119         struct policy_handle lsa_policy;
 120
 121         struct rpc_pipe_client *netlogon_pipe;
 122 };
 123
 124 struct winbindd_async_request;
 125
 126 /* Async child */
 127
 128 struct winbindd_domain;
 129
 130 struct winbindd_child_dispatch_table {
 131         const char *name;
 132         enum winbindd_cmd struct_cmd;
 133         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 134                                           struct winbindd_cli_state *state);
 135 };
 136
 137 struct winbindd_child {
 138         struct winbindd_child *next, *prev;
 139
 140         pid_t pid;
 141         struct winbindd_domain *domain;
 142         char *logfilename;
 143
 144         int sock;
 145         struct tevent_queue *queue;
 146         struct rpc_pipe_client *rpccli;
 147
 148         struct timed_event *lockout_policy_event;
 149         struct timed_event *machine_password_change_event;
 150
 151         const struct winbindd_child_dispatch_table *table;
 152 };
 153
 154 /* Structures to hold per domain information */
 155
 156 struct winbindd_domain {
 157         fstring name;                          /* Domain name (NetBIOS) */
 158         fstring alt_name;                      /* alt Domain name, if any (FQDN for ADS) */
 159         fstring forest_name;                   /* Name of the AD forest we're in */
 160         DOM_SID sid;                           /* SID for this domain */
 161         uint32 domain_flags;                   /* Domain flags from netlogon.h */
 162         uint32 domain_type;                    /* Domain type from netlogon.h */
 163         uint32 domain_trust_attribs;           /* Trust attribs from netlogon.h */
 164         bool initialized;                      /* Did we already ask for the domain mode? */
 165         bool native_mode;                      /* is this a win2k domain in native mode ? */
 166         bool active_directory;                 /* is this a win2k active directory ? */
 167         bool primary;                          /* is this our primary domain ? */
 168         bool internal;                         /* BUILTIN and member SAM */
 169         bool online;                           /* is this domain available ? */
 170         time_t startup_time;                   /* When we set "startup" true. */
 171         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 172
 173         bool can_do_samlogon_ex; /* Due to the lack of finer control what type
 174                                   * of DC we have, let us try to do a
 175                                   * credential-chain less samlogon_ex call
 176                                   * with AD and schannel. If this fails with
 177                                   * DCERPC_FAULT_OP_RNG_ERROR, then set this
 178                                   * to False. This variable is around so that
 179                                   * we don't have to try _ex every time. */
 180
 181         bool can_do_ncacn_ip_tcp;
 182
 183         /* Lookup methods for this domain (LDAP or RPC) */
 184         struct winbindd_methods *methods;
 185
 186         /* the backend methods are used by the cache layer to find the right
 187            backend */
 188         struct winbindd_methods *backend;
 189
 190         /* Private data for the backends (used for connection cache) */
 191
 192         void *private_data;
 193
 194         /*
 195          * idmap config settings, used to tell the idmap child which
 196          * special domain config to use for a mapping
 197          */
 198         bool have_idmap_config;
 199         uint32_t id_range_low, id_range_high;
 200
 201         /* A working DC */
 202         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 203         fstring dcname;
 204         struct sockaddr_storage dcaddr;
 205
 206         /* Sequence number stuff */
 207
 208         time_t last_seq_check;
 209         uint32 sequence_number;
 210         NTSTATUS last_status;
 211
 212         /* The smb connection */
 213
 214         struct winbindd_cm_conn conn;
 215
 216         /* The child pid we're talking to */
 217
 218         struct winbindd_child child;
 219
 220         /* Callback we use to try put us back online. */
 221
 222         uint32 check_online_timeout;
 223         struct timed_event *check_online_event;
 224
 225         /* Linked list info */
 226
 227         struct winbindd_domain *prev, *next;
 228 };
 229
 230 /* per-domain methods. This is how LDAP vs RPC is selected
 231  */
 232 struct winbindd_methods {
 233         /* does this backend provide a consistent view of the data? (ie. is the primary group
 234            always correct) */
 235         bool consistent;
 236
 237         /* get a list of users, returning a wbint_userinfo for each one */
 238         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 239                                    TALLOC_CTX *mem_ctx,
 240                                    uint32 *num_entries,
 241                                    struct wbint_userinfo **info);
 242
 243         /* get a list of domain groups */
 244         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 245                                     TALLOC_CTX *mem_ctx,
 246                                     uint32 *num_entries,
 247                                     struct acct_info **info);
 248
 249         /* get a list of domain local groups */
 250         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 251                                     TALLOC_CTX *mem_ctx,
 252                                     uint32 *num_entries,
 253                                     struct acct_info **info);
 254
 255         /* convert one user or group name to a sid */
 256         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 257                                 TALLOC_CTX *mem_ctx,
 258                                 const char *domain_name,
 259                                 const char *name,
 260                                 uint32_t flags,
 261                                 DOM_SID *sid,
 262                                 enum lsa_SidType *type);
 263
 264         /* convert a sid to a user or group name */
 265         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 266                                 TALLOC_CTX *mem_ctx,
 267                                 const DOM_SID *sid,
 268                                 char **domain_name,
 269                                 char **name,
 270                                 enum lsa_SidType *type);
 271
 272         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 273                                   TALLOC_CTX *mem_ctx,
 274                                   const DOM_SID *domain_sid,
 275                                   uint32 *rids,
 276                                   size_t num_rids,
 277                                   char **domain_name,
 278                                   char ***names,
 279                                   enum lsa_SidType **types);
 280
 281         /* lookup user info for a given SID */
 282         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 283                                TALLOC_CTX *mem_ctx,
 284                                const DOM_SID *user_sid,
 285                                struct wbint_userinfo *user_info);
 286
 287         /* lookup all groups that a user is a member of. The backend
 288            can also choose to lookup by username or rid for this
 289            function */
 290         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 291                                       TALLOC_CTX *mem_ctx,
 292                                       const DOM_SID *user_sid,
 293                                       uint32 *num_groups, DOM_SID **user_gids);
 294
 295         /* Lookup all aliases that the sids delivered are member of. This is
 296          * to implement 'domain local groups' correctly */
 297         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 298                                        TALLOC_CTX *mem_ctx,
 299                                        uint32 num_sids,
 300                                        const DOM_SID *sids,
 301                                        uint32 *num_aliases,
 302                                        uint32 **alias_rids);
 303
 304         /* find all members of the group with the specified group_rid */
 305         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 306                                     TALLOC_CTX *mem_ctx,
 307                                     const DOM_SID *group_sid,
 308                                     enum lsa_SidType type,
 309                                     uint32 *num_names,
 310                                     DOM_SID **sid_mem, char ***names,
 311                                     uint32 **name_types);
 312
 313         /* return the current global sequence number */
 314         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32 *seq);
 315
 316         /* return the lockout policy */
 317         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 318                                    TALLOC_CTX *mem_ctx,
 319                                    struct samr_DomInfo12 *lockout_policy);
 320
 321         /* return the lockout policy */
 322         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 323                                     TALLOC_CTX *mem_ctx,
 324                                     struct samr_DomInfo1 *password_policy);
 325
 326         /* enumerate trusted domains */
 327         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 328                                     TALLOC_CTX *mem_ctx,
 329                                     uint32 *num_domains,
 330                                     char ***names,
 331                                     char ***alt_names,
 332                                     DOM_SID **dom_sids);
 333 };
 334
 335 /* Filled out by IDMAP backends */
 336 struct winbindd_idmap_methods {
 337   /* Called when backend is first loaded */
 338   bool (*init)(void);
 339
 340   bool (*get_sid_from_uid)(uid_t uid, DOM_SID *sid);
 341   bool (*get_sid_from_gid)(gid_t gid, DOM_SID *sid);
 342
 343   bool (*get_uid_from_sid)(DOM_SID *sid, uid_t *uid);
 344   bool (*get_gid_from_sid)(DOM_SID *sid, gid_t *gid);
 345
 346   /* Called when backend is unloaded */
 347   bool (*close)(void);
 348   /* Called to dump backend status */
 349   void (*status)(void);
 350 };
 351
 352 /* Data structures for dealing with the trusted domain cache */
 353
 354 struct winbindd_tdc_domain {
 355         const char *domain_name;
 356         const char *dns_name;
 357         DOM_SID sid;
 358         uint32 trust_flags;
 359         uint32 trust_attribs;
 360         uint32 trust_type;
 361 };
 362
 363 /* Switch for listing users or groups */
 364 enum ent_type {
 365         LIST_USERS = 0,
 366         LIST_GROUPS,
 367 };
 368
 369 struct WINBINDD_MEMORY_CREDS {
 370         struct WINBINDD_MEMORY_CREDS *next, *prev;
 371         const char *username; /* lookup key. */
 372         uid_t uid;
 373         int ref_count;
 374         size_t len;
 375         uint8_t *nt_hash; /* Base pointer for the following 2 */
 376         uint8_t *lm_hash;
 377         char *pass;
 378 };
 379
 380 struct WINBINDD_CCACHE_ENTRY {
 381         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 382         const char *principal_name;
 383         const char *ccname;
 384         const char *service;
 385         const char *username;
 386         const char *realm;
 387         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 388         int ref_count;
 389         uid_t uid;
 390         time_t create_time;
 391         time_t renew_until;
 392         time_t refresh_time;
 393         struct timed_event *event;
 394 };
 395
 396 #include "winbindd/winbindd_proto.h"
 397
 398 #define WINBINDD_ESTABLISH_LOOP 30
 399 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 400 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 401 #define DOM_SEQUENCE_NONE ((uint32)-1)
 402
 403 #define IS_DOMAIN_OFFLINE(x) ( lp_winbind_offline_logon() && \
 404                                ( get_global_winbindd_state_offline() \
 405                                  || !(x)->online ) )
 406 #define IS_DOMAIN_ONLINE(x) (!IS_DOMAIN_OFFLINE(x))
 407
 408 #endif /* _WINBINDD_H */