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