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