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