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/dcerpc.h"
  29 #include "librpc/gen_ndr/wbint.h"
  30
  31 #include "talloc_dict.h"
  32
  33 #include "../lib/util/tevent_ntstatus.h"
  34
  35 #ifdef HAVE_LIBNSCD
  36 #include <libnscd.h>
  37 #endif
  38
  39 #ifdef HAVE_SYS_MMAN_H
  40 #include <sys/mman.h>
  41 #endif
  42
  43 #undef DBGC_CLASS
  44 #define DBGC_CLASS DBGC_WINBIND
  45
  46 #define WB_REPLACE_CHAR         '_'
  47
  48 struct sid_ctr {
  49         struct dom_sid *sid;
  50         bool finished;
  51         const char *domain;
  52         const char *name;
  53         enum lsa_SidType type;
  54 };
  55
  56 struct winbindd_cli_state {
  57         struct winbindd_cli_state *prev, *next;   /* Linked list pointers */
  58         int sock;                                 /* Open socket from client */
  59         pid_t pid;                                /* pid of client */
  60         time_t last_access;                       /* Time of last access (read or write) */
  61         bool privileged;                           /* Is the client 'privileged' */
  62
  63         TALLOC_CTX *mem_ctx;                      /* memory per request */
  64         const char *cmd_name;
  65         NTSTATUS (*recv_fn)(struct tevent_req *req,
  66                             struct winbindd_response *presp);
  67         struct winbindd_request *request;         /* Request from client */
  68         struct tevent_queue *out_queue;
  69         struct winbindd_response *response;        /* Respose to client */
  70         bool getpwent_initialized;                /* Has getpwent_state been
  71                                                    * initialized? */
  72         bool getgrent_initialized;                /* Has getgrent_state been
  73                                                    * initialized? */
  74
  75         struct getpwent_state *pwent_state; /* State for getpwent() */
  76         struct getgrent_state *grent_state; /* State for getgrent() */
  77 };
  78
  79 struct getpwent_state {
  80         struct winbindd_domain *domain;
  81         int next_user;
  82         int num_users;
  83         struct wbint_userinfo *users;
  84 };
  85
  86 struct getgrent_state {
  87         struct winbindd_domain *domain;
  88         int next_group;
  89         int num_groups;
  90         struct wbint_Principal *groups;
  91 };
  92
  93 /* Storage for cached getpwent() user entries */
  94
  95 struct getpwent_user {
  96         fstring name;                        /* Account name */
  97         fstring gecos;                       /* User information */
  98         fstring homedir;                     /* User Home Directory */
  99         fstring shell;                       /* User Login Shell */
 100         struct dom_sid user_sid;                    /* NT user and primary group SIDs */
 101         struct dom_sid group_sid;
 102 };
 103
 104 /* Our connection to the DC */
 105
 106 struct winbindd_cm_conn {
 107         struct cli_state *cli;
 108
 109         enum dcerpc_AuthLevel auth_level;
 110
 111         struct rpc_pipe_client *samr_pipe;
 112         struct policy_handle sam_connect_handle, sam_domain_handle;
 113
 114         struct rpc_pipe_client *lsa_pipe;
 115         struct rpc_pipe_client *lsa_pipe_tcp;
 116         struct policy_handle lsa_policy;
 117
 118         struct rpc_pipe_client *netlogon_pipe;
 119 };
 120
 121 /* Async child */
 122
 123 struct winbindd_domain;
 124
 125 struct winbindd_child_dispatch_table {
 126         const char *name;
 127         enum winbindd_cmd struct_cmd;
 128         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 129                                           struct winbindd_cli_state *state);
 130 };
 131
 132 struct winbindd_child {
 133         struct winbindd_child *next, *prev;
 134
 135         pid_t pid;
 136         struct winbindd_domain *domain;
 137         char *logfilename;
 138
 139         int sock;
 140         struct tevent_queue *queue;
 141         struct dcerpc_binding_handle *binding_handle;
 142
 143         struct tevent_timer *lockout_policy_event;
 144         struct tevent_timer *machine_password_change_event;
 145
 146         const struct winbindd_child_dispatch_table *table;
 147 };
 148
 149 /* Structures to hold per domain information */
 150
 151 struct winbindd_domain {
 152         char *name;                            /* Domain name (NetBIOS) */
 153         char *alt_name;                        /* alt Domain name, if any (FQDN for ADS) */
 154         char *forest_name;                     /* Name of the AD forest we're in */
 155         struct dom_sid sid;                           /* SID for this domain */
 156         uint32 domain_flags;                   /* Domain flags from netlogon.h */
 157         uint32 domain_type;                    /* Domain type from netlogon.h */
 158         uint32 domain_trust_attribs;           /* Trust attribs from netlogon.h */
 159         bool initialized;                      /* Did we already ask for the domain mode? */
 160         bool native_mode;                      /* is this a win2k domain in native mode ? */
 161         bool active_directory;                 /* is this a win2k active directory ? */
 162         bool primary;                          /* is this our primary domain ? */
 163         bool internal;                         /* BUILTIN and member SAM */
 164         bool online;                           /* is this domain available ? */
 165         time_t startup_time;                   /* When we set "startup" true. monotonic clock */
 166         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 167
 168         bool can_do_samlogon_ex; /* Due to the lack of finer control what type
 169                                   * of DC we have, let us try to do a
 170                                   * credential-chain less samlogon_ex call
 171                                   * with AD and schannel. If this fails with
 172                                   * DCERPC_FAULT_OP_RNG_ERROR, then set this
 173                                   * to False. This variable is around so that
 174                                   * we don't have to try _ex every time. */
 175
 176         bool can_do_ncacn_ip_tcp;
 177         bool can_do_validation6;
 178
 179         /* Lookup methods for this domain (LDAP or RPC) */
 180         struct winbindd_methods *methods;
 181
 182         /* the backend methods are used by the cache layer to find the right
 183            backend */
 184         struct winbindd_methods *backend;
 185
 186         /* Private data for the backends (used for connection cache) */
 187
 188         void *private_data;
 189
 190         /*
 191          * idmap config settings, used to tell the idmap child which
 192          * special domain config to use for a mapping
 193          */
 194         bool have_idmap_config;
 195         uint32_t id_range_low, id_range_high;
 196
 197         /* A working DC */
 198         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 199         char *dcname;
 200         struct sockaddr_storage dcaddr;
 201
 202         /* Sequence number stuff */
 203
 204         time_t last_seq_check;
 205         uint32 sequence_number;
 206         NTSTATUS last_status;
 207
 208         /* The smb connection */
 209
 210         struct winbindd_cm_conn conn;
 211
 212         /* The child pid we're talking to */
 213
 214         struct winbindd_child *children;
 215
 216         /* Callback we use to try put us back online. */
 217
 218         uint32 check_online_timeout;
 219         struct tevent_timer *check_online_event;
 220
 221         /* Linked list info */
 222
 223         struct winbindd_domain *prev, *next;
 224 };
 225
 226 struct wb_acct_info {
 227         fstring acct_name; /* account name */
 228         fstring acct_desc; /* account name */
 229         uint32_t rid; /* domain-relative RID */
 230 };
 231
 232 /* per-domain methods. This is how LDAP vs RPC is selected
 233  */
 234 struct winbindd_methods {
 235         /* does this backend provide a consistent view of the data? (ie. is the primary group
 236            always correct) */
 237         bool consistent;
 238
 239         /* get a list of users, returning a wbint_userinfo for each one */
 240         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 241                                    TALLOC_CTX *mem_ctx,
 242                                    uint32 *num_entries,
 243                                    struct wbint_userinfo **info);
 244
 245         /* get a list of domain groups */
 246         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 247                                     TALLOC_CTX *mem_ctx,
 248                                     uint32 *num_entries,
 249                                     struct wb_acct_info **info);
 250
 251         /* get a list of domain local groups */
 252         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 253                                     TALLOC_CTX *mem_ctx,
 254                                     uint32 *num_entries,
 255                                     struct wb_acct_info **info);
 256
 257         /* convert one user or group name to a sid */
 258         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 259                                 TALLOC_CTX *mem_ctx,
 260                                 const char *domain_name,
 261                                 const char *name,
 262                                 uint32_t flags,
 263                                 struct dom_sid *sid,
 264                                 enum lsa_SidType *type);
 265
 266         /* convert a sid to a user or group name */
 267         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 268                                 TALLOC_CTX *mem_ctx,
 269                                 const struct dom_sid *sid,
 270                                 char **domain_name,
 271                                 char **name,
 272                                 enum lsa_SidType *type);
 273
 274         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 275                                   TALLOC_CTX *mem_ctx,
 276                                   const struct dom_sid *domain_sid,
 277                                   uint32 *rids,
 278                                   size_t num_rids,
 279                                   char **domain_name,
 280                                   char ***names,
 281                                   enum lsa_SidType **types);
 282
 283         /* lookup user info for a given SID */
 284         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 285                                TALLOC_CTX *mem_ctx,
 286                                const struct dom_sid *user_sid,
 287                                struct wbint_userinfo *user_info);
 288
 289         /* lookup all groups that a user is a member of. The backend
 290            can also choose to lookup by username or rid for this
 291            function */
 292         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 293                                       TALLOC_CTX *mem_ctx,
 294                                       const struct dom_sid *user_sid,
 295                                       uint32 *num_groups, struct dom_sid **user_gids);
 296
 297         /* Lookup all aliases that the sids delivered are member of. This is
 298          * to implement 'domain local groups' correctly */
 299         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 300                                        TALLOC_CTX *mem_ctx,
 301                                        uint32 num_sids,
 302                                        const struct dom_sid *sids,
 303                                        uint32 *num_aliases,
 304                                        uint32 **alias_rids);
 305
 306         /* find all members of the group with the specified group_rid */
 307         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 308                                     TALLOC_CTX *mem_ctx,
 309                                     const struct dom_sid *group_sid,
 310                                     enum lsa_SidType type,
 311                                     uint32 *num_names,
 312                                     struct dom_sid **sid_mem, char ***names,
 313                                     uint32 **name_types);
 314
 315         /* return the current global sequence number */
 316         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32 *seq);
 317
 318         /* return the lockout policy */
 319         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 320                                    TALLOC_CTX *mem_ctx,
 321                                    struct samr_DomInfo12 *lockout_policy);
 322
 323         /* return the lockout policy */
 324         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 325                                     TALLOC_CTX *mem_ctx,
 326                                     struct samr_DomInfo1 *password_policy);
 327
 328         /* enumerate trusted domains */
 329         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 330                                     TALLOC_CTX *mem_ctx,
 331                                     struct netr_DomainTrustList *trusts);
 332 };
 333
 334 /* Filled out by IDMAP backends */
 335 struct winbindd_idmap_methods {
 336   /* Called when backend is first loaded */
 337   bool (*init)(void);
 338
 339   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 340   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 341
 342   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 343   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 344
 345   /* Called when backend is unloaded */
 346   bool (*close)(void);
 347   /* Called to dump backend status */
 348   void (*status)(void);
 349 };
 350
 351 /* Data structures for dealing with the trusted domain cache */
 352
 353 struct winbindd_tdc_domain {
 354         const char *domain_name;
 355         const char *dns_name;
 356         struct dom_sid sid;
 357         uint32 trust_flags;
 358         uint32 trust_attribs;
 359         uint32 trust_type;
 360 };
 361
 362 /* Switch for listing users or groups */
 363 enum ent_type {
 364         LIST_USERS = 0,
 365         LIST_GROUPS,
 366 };
 367
 368 struct WINBINDD_MEMORY_CREDS {
 369         struct WINBINDD_MEMORY_CREDS *next, *prev;
 370         const char *username; /* lookup key. */
 371         uid_t uid;
 372         int ref_count;
 373         size_t len;
 374         uint8_t *nt_hash; /* Base pointer for the following 2 */
 375         uint8_t *lm_hash;
 376         char *pass;
 377 };
 378
 379 struct WINBINDD_CCACHE_ENTRY {
 380         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 381         const char *principal_name;
 382         const char *ccname;
 383         const char *service;
 384         const char *username;
 385         const char *realm;
 386         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 387         int ref_count;
 388         uid_t uid;
 389         time_t create_time;
 390         time_t renew_until;
 391         time_t refresh_time;
 392         struct tevent_timer *event;
 393 };
 394
 395 #include "winbindd/winbindd_proto.h"
 396
 397 #define WINBINDD_ESTABLISH_LOOP 30
 398 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 399 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 400 #define DOM_SEQUENCE_NONE ((uint32)-1)
 401
 402 #endif /* _WINBINDD_H */