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
  29 #ifdef HAVE_LIBNSCD
  30 #include <libnscd.h>
  31 #endif
  32
  33 #ifdef HAVE_SYS_MMAN_H
  34 #include <sys/mman.h>
  35 #endif
  36
  37 #undef DBGC_CLASS
  38 #define DBGC_CLASS DBGC_WINBIND
  39
  40 #define WB_REPLACE_CHAR         '_'
  41
  42 struct sid_ctr {
  43         DOM_SID *sid;
  44         bool finished;
  45         const char *domain;
  46         const char *name;
  47         enum lsa_SidType type;
  48 };
  49
  50 struct winbindd_cli_state {
  51         struct winbindd_cli_state *prev, *next;   /* Linked list pointers */
  52         int sock;                                 /* Open socket from client */
  53         pid_t pid;                                /* pid of client */
  54         time_t last_access;                       /* Time of last access (read or write) */
  55         bool privileged;                           /* Is the client 'privileged' */
  56
  57         TALLOC_CTX *mem_ctx;                      /* memory per request */
  58         NTSTATUS (*recv_fn)(struct tevent_req *req, TALLOC_CTX *mem_ctx,
  59                             struct winbindd_response **presp);
  60         struct winbindd_request *request;         /* Request from client */
  61         struct winbindd_request _request;
  62         struct tevent_queue *out_queue;
  63         struct winbindd_response *response;
  64         struct winbindd_response _response;        /* Respose to client */
  65         bool getpwent_initialized;                /* Has getpwent_state been
  66                                                    * initialized? */
  67         bool getgrent_initialized;                /* Has getgrent_state been
  68                                                    * initialized? */
  69         struct getent_state *getpwent_state;      /* State for getpwent() */
  70         struct getent_state *getgrent_state;      /* State for getgrent() */
  71 };
  72
  73 /* State between get{pw,gr}ent() calls */
  74
  75 struct getent_state {
  76         struct getent_state *prev, *next;
  77         void *sam_entries;
  78         uint32 sam_entry_index, num_sam_entries;
  79         bool got_sam_entries;
  80         fstring domain_name;
  81 };
  82
  83 /* Storage for cached getpwent() user entries */
  84
  85 struct getpwent_user {
  86         fstring name;                        /* Account name */
  87         fstring gecos;                       /* User information */
  88         fstring homedir;                     /* User Home Directory */
  89         fstring shell;                       /* User Login Shell */
  90         DOM_SID user_sid;                    /* NT user and primary group SIDs */
  91         DOM_SID group_sid;
  92 };
  93
  94 /* Server state structure */
  95
  96 typedef struct {
  97         char *acct_name;
  98         char *full_name;
  99         char *homedir;
 100         char *shell;
 101         gid_t primary_gid;                   /* allow the nss_info
 102                                                 backend to set the primary group */
 103         DOM_SID user_sid;                    /* NT user and primary group SIDs */
 104         DOM_SID group_sid;
 105 } WINBIND_USERINFO;
 106
 107 /* Our connection to the DC */
 108
 109 struct winbindd_cm_conn {
 110         struct cli_state *cli;
 111
 112         struct rpc_pipe_client *samr_pipe;
 113         struct policy_handle sam_connect_handle, sam_domain_handle;
 114
 115         struct rpc_pipe_client *lsa_pipe;
 116         struct policy_handle lsa_policy;
 117
 118         struct rpc_pipe_client *netlogon_pipe;
 119 };
 120
 121 struct winbindd_async_request;
 122
 123 /* Async child */
 124
 125 struct winbindd_domain;
 126
 127 struct winbindd_child_dispatch_table {
 128         const char *name;
 129         enum winbindd_cmd struct_cmd;
 130         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 131                                           struct winbindd_cli_state *state);
 132 };
 133
 134 struct winbindd_child {
 135         struct winbindd_child *next, *prev;
 136
 137         pid_t pid;
 138         struct winbindd_domain *domain;
 139         char *logfilename;
 140
 141         int sock;
 142         struct tevent_queue *queue;
 143
 144         struct timed_event *lockout_policy_event;
 145         struct timed_event *machine_password_change_event;
 146
 147         const struct winbindd_child_dispatch_table *table;
 148 };
 149
 150 /* Structures to hold per domain information */
 151
 152 struct winbindd_domain {
 153         fstring name;                          /* Domain name (NetBIOS) */
 154         fstring alt_name;                      /* alt Domain name, if any (FQDN for ADS) */
 155         fstring forest_name;                   /* Name of the AD forest we're in */
 156         DOM_SID sid;                           /* SID for this domain */
 157         uint32 domain_flags;                   /* Domain flags from netlogon.h */
 158         uint32 domain_type;                    /* Domain type from netlogon.h */
 159         uint32 domain_trust_attribs;           /* Trust attribs from netlogon.h */
 160         bool initialized;                      /* Did we already ask for the domain mode? */
 161         bool native_mode;                      /* is this a win2k domain in native mode ? */
 162         bool active_directory;                 /* is this a win2k active directory ? */
 163         bool primary;                          /* is this our primary domain ? */
 164         bool internal;                         /* BUILTIN and member SAM */
 165         bool online;                           /* is this domain available ? */
 166         time_t startup_time;                   /* When we set "startup" true. */
 167         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 168
 169         bool can_do_samlogon_ex; /* Due to the lack of finer control what type
 170                                   * of DC we have, let us try to do a
 171                                   * credential-chain less samlogon_ex call
 172                                   * with AD and schannel. If this fails with
 173                                   * DCERPC_FAULT_OP_RNG_ERROR, then set this
 174                                   * to False. This variable is around so that
 175                                   * we don't have to try _ex every time. */
 176
 177         /* Lookup methods for this domain (LDAP or RPC) */
 178         struct winbindd_methods *methods;
 179
 180         /* the backend methods are used by the cache layer to find the right
 181            backend */
 182         struct winbindd_methods *backend;
 183
 184         /* Private data for the backends (used for connection cache) */
 185
 186         void *private_data;
 187
 188         /*
 189          * idmap config settings, used to tell the idmap child which
 190          * special domain config to use for a mapping
 191          */
 192         bool have_idmap_config;
 193         uint32_t id_range_low, id_range_high;
 194
 195         /* A working DC */
 196         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 197         fstring dcname;
 198         struct sockaddr_storage dcaddr;
 199
 200         /* Sequence number stuff */
 201
 202         time_t last_seq_check;
 203         uint32 sequence_number;
 204         NTSTATUS last_status;
 205
 206         /* The smb connection */
 207
 208         struct winbindd_cm_conn conn;
 209
 210         /* The child pid we're talking to */
 211
 212         struct winbindd_child child;
 213
 214         /* Callback we use to try put us back online. */
 215
 216         uint32 check_online_timeout;
 217         struct timed_event *check_online_event;
 218
 219         /* Linked list info */
 220
 221         struct winbindd_domain *prev, *next;
 222 };
 223
 224 /* per-domain methods. This is how LDAP vs RPC is selected
 225  */
 226 struct winbindd_methods {
 227         /* does this backend provide a consistent view of the data? (ie. is the primary group
 228            always correct) */
 229         bool consistent;
 230
 231         /* get a list of users, returning a WINBIND_USERINFO for each one */
 232         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 233                                    TALLOC_CTX *mem_ctx,
 234                                    uint32 *num_entries,
 235                                    WINBIND_USERINFO **info);
 236
 237         /* get a list of domain groups */
 238         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 239                                     TALLOC_CTX *mem_ctx,
 240                                     uint32 *num_entries,
 241                                     struct acct_info **info);
 242
 243         /* get a list of domain local groups */
 244         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 245                                     TALLOC_CTX *mem_ctx,
 246                                     uint32 *num_entries,
 247                                     struct acct_info **info);
 248
 249         /* convert one user or group name to a sid */
 250         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 251                                 TALLOC_CTX *mem_ctx,
 252                                 enum winbindd_cmd orig_cmd,
 253                                 const char *domain_name,
 254                                 const char *name,
 255                                 DOM_SID *sid,
 256                                 enum lsa_SidType *type);
 257
 258         /* convert a sid to a user or group name */
 259         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 260                                 TALLOC_CTX *mem_ctx,
 261                                 const DOM_SID *sid,
 262                                 char **domain_name,
 263                                 char **name,
 264                                 enum lsa_SidType *type);
 265
 266         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 267                                   TALLOC_CTX *mem_ctx,
 268                                   const DOM_SID *domain_sid,
 269                                   uint32 *rids,
 270                                   size_t num_rids,
 271                                   char **domain_name,
 272                                   char ***names,
 273                                   enum lsa_SidType **types);
 274
 275         /* lookup user info for a given SID */
 276         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 277                                TALLOC_CTX *mem_ctx,
 278                                const DOM_SID *user_sid,
 279                                WINBIND_USERINFO *user_info);
 280
 281         /* lookup all groups that a user is a member of. The backend
 282            can also choose to lookup by username or rid for this
 283            function */
 284         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 285                                       TALLOC_CTX *mem_ctx,
 286                                       const DOM_SID *user_sid,
 287                                       uint32 *num_groups, DOM_SID **user_gids);
 288
 289         /* Lookup all aliases that the sids delivered are member of. This is
 290          * to implement 'domain local groups' correctly */
 291         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 292                                        TALLOC_CTX *mem_ctx,
 293                                        uint32 num_sids,
 294                                        const DOM_SID *sids,
 295                                        uint32 *num_aliases,
 296                                        uint32 **alias_rids);
 297
 298         /* find all members of the group with the specified group_rid */
 299         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 300                                     TALLOC_CTX *mem_ctx,
 301                                     const DOM_SID *group_sid,
 302                                     uint32 *num_names,
 303                                     DOM_SID **sid_mem, char ***names,
 304                                     uint32 **name_types);
 305
 306         /* return the current global sequence number */
 307         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32 *seq);
 308
 309         /* return the lockout policy */
 310         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 311                                    TALLOC_CTX *mem_ctx,
 312                                    struct samr_DomInfo12 *lockout_policy);
 313
 314         /* return the lockout policy */
 315         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 316                                     TALLOC_CTX *mem_ctx,
 317                                     struct samr_DomInfo1 *password_policy);
 318
 319         /* enumerate trusted domains */
 320         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 321                                     TALLOC_CTX *mem_ctx,
 322                                     uint32 *num_domains,
 323                                     char ***names,
 324                                     char ***alt_names,
 325                                     DOM_SID **dom_sids);
 326 };
 327
 328 /* Filled out by IDMAP backends */
 329 struct winbindd_idmap_methods {
 330   /* Called when backend is first loaded */
 331   bool (*init)(void);
 332
 333   bool (*get_sid_from_uid)(uid_t uid, DOM_SID *sid);
 334   bool (*get_sid_from_gid)(gid_t gid, DOM_SID *sid);
 335
 336   bool (*get_uid_from_sid)(DOM_SID *sid, uid_t *uid);
 337   bool (*get_gid_from_sid)(DOM_SID *sid, gid_t *gid);
 338
 339   /* Called when backend is unloaded */
 340   bool (*close)(void);
 341   /* Called to dump backend status */
 342   void (*status)(void);
 343 };
 344
 345 /* Data structures for dealing with the trusted domain cache */
 346
 347 struct winbindd_tdc_domain {
 348         const char *domain_name;
 349         const char *dns_name;
 350         DOM_SID sid;
 351         uint32 trust_flags;
 352         uint32 trust_attribs;
 353         uint32 trust_type;
 354 };
 355
 356 /* Switch for listing users or groups */
 357 enum ent_type {
 358         LIST_USERS = 0,
 359         LIST_GROUPS,
 360 };
 361
 362 struct WINBINDD_MEMORY_CREDS {
 363         struct WINBINDD_MEMORY_CREDS *next, *prev;
 364         const char *username; /* lookup key. */
 365         uid_t uid;
 366         int ref_count;
 367         size_t len;
 368         uint8_t *nt_hash; /* Base pointer for the following 2 */
 369         uint8_t *lm_hash;
 370         char *pass;
 371 };
 372
 373 struct WINBINDD_CCACHE_ENTRY {
 374         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 375         const char *principal_name;
 376         const char *ccname;
 377         const char *service;
 378         const char *username;
 379         const char *realm;
 380         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 381         int ref_count;
 382         uid_t uid;
 383         time_t create_time;
 384         time_t renew_until;
 385         time_t refresh_time;
 386         struct timed_event *event;
 387 };
 388
 389 #include "winbindd/winbindd_proto.h"
 390
 391 #define WINBINDD_ESTABLISH_LOOP 30
 392 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 393 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 394 #define DOM_SEQUENCE_NONE ((uint32)-1)
 395
 396 #define IS_DOMAIN_OFFLINE(x) ( lp_winbind_offline_logon() && \
 397                                ( get_global_winbindd_state_offline() \
 398                                  || !(x)->online ) )
 399 #define IS_DOMAIN_ONLINE(x) (!IS_DOMAIN_OFFLINE(x))
 400
 401 #endif /* _WINBINDD_H */