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         bool can_do_validation6;
 173
 174         /* Lookup methods for this domain (LDAP or RPC) */
 175         struct winbindd_methods *methods;
 176
 177         /* the backend methods are used by the cache layer to find the right
 178            backend */
 179         struct winbindd_methods *backend;
 180
 181         /* Private data for the backends (used for connection cache) */
 182
 183         void *private_data;
 184
 185         /*
 186          * idmap config settings, used to tell the idmap child which
 187          * special domain config to use for a mapping
 188          */
 189         bool have_idmap_config;
 190         uint32_t id_range_low, id_range_high;
 191
 192         /* A working DC */
 193         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 194         fstring dcname;
 195         struct sockaddr_storage dcaddr;
 196
 197         /* Sequence number stuff */
 198
 199         time_t last_seq_check;
 200         uint32 sequence_number;
 201         NTSTATUS last_status;
 202
 203         /* The smb connection */
 204
 205         struct winbindd_cm_conn conn;
 206
 207         /* The child pid we're talking to */
 208
 209         struct winbindd_child *children;
 210
 211         /* Callback we use to try put us back online. */
 212
 213         uint32 check_online_timeout;
 214         struct timed_event *check_online_event;
 215
 216         /* Linked list info */
 217
 218         struct winbindd_domain *prev, *next;
 219 };
 220
 221 /* per-domain methods. This is how LDAP vs RPC is selected
 222  */
 223 struct winbindd_methods {
 224         /* does this backend provide a consistent view of the data? (ie. is the primary group
 225            always correct) */
 226         bool consistent;
 227
 228         /* get a list of users, returning a wbint_userinfo for each one */
 229         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 230                                    TALLOC_CTX *mem_ctx,
 231                                    uint32 *num_entries,
 232                                    struct wbint_userinfo **info);
 233
 234         /* get a list of domain groups */
 235         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 236                                     TALLOC_CTX *mem_ctx,
 237                                     uint32 *num_entries,
 238                                     struct acct_info **info);
 239
 240         /* get a list of domain local groups */
 241         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 242                                     TALLOC_CTX *mem_ctx,
 243                                     uint32 *num_entries,
 244                                     struct acct_info **info);
 245
 246         /* convert one user or group name to a sid */
 247         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 248                                 TALLOC_CTX *mem_ctx,
 249                                 const char *domain_name,
 250                                 const char *name,
 251                                 uint32_t flags,
 252                                 struct dom_sid *sid,
 253                                 enum lsa_SidType *type);
 254
 255         /* convert a sid to a user or group name */
 256         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 257                                 TALLOC_CTX *mem_ctx,
 258                                 const struct dom_sid *sid,
 259                                 char **domain_name,
 260                                 char **name,
 261                                 enum lsa_SidType *type);
 262
 263         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 264                                   TALLOC_CTX *mem_ctx,
 265                                   const struct dom_sid *domain_sid,
 266                                   uint32 *rids,
 267                                   size_t num_rids,
 268                                   char **domain_name,
 269                                   char ***names,
 270                                   enum lsa_SidType **types);
 271
 272         /* lookup user info for a given SID */
 273         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 274                                TALLOC_CTX *mem_ctx,
 275                                const struct dom_sid *user_sid,
 276                                struct wbint_userinfo *user_info);
 277
 278         /* lookup all groups that a user is a member of. The backend
 279            can also choose to lookup by username or rid for this
 280            function */
 281         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 282                                       TALLOC_CTX *mem_ctx,
 283                                       const struct dom_sid *user_sid,
 284                                       uint32 *num_groups, struct dom_sid **user_gids);
 285
 286         /* Lookup all aliases that the sids delivered are member of. This is
 287          * to implement 'domain local groups' correctly */
 288         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 289                                        TALLOC_CTX *mem_ctx,
 290                                        uint32 num_sids,
 291                                        const struct dom_sid *sids,
 292                                        uint32 *num_aliases,
 293                                        uint32 **alias_rids);
 294
 295         /* find all members of the group with the specified group_rid */
 296         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 297                                     TALLOC_CTX *mem_ctx,
 298                                     const struct dom_sid *group_sid,
 299                                     enum lsa_SidType type,
 300                                     uint32 *num_names,
 301                                     struct dom_sid **sid_mem, char ***names,
 302                                     uint32 **name_types);
 303
 304         /* return the current global sequence number */
 305         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32 *seq);
 306
 307         /* return the lockout policy */
 308         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 309                                    TALLOC_CTX *mem_ctx,
 310                                    struct samr_DomInfo12 *lockout_policy);
 311
 312         /* return the lockout policy */
 313         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 314                                     TALLOC_CTX *mem_ctx,
 315                                     struct samr_DomInfo1 *password_policy);
 316
 317         /* enumerate trusted domains */
 318         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 319                                     TALLOC_CTX *mem_ctx,
 320                                     struct netr_DomainTrustList *trusts);
 321 };
 322
 323 /* Filled out by IDMAP backends */
 324 struct winbindd_idmap_methods {
 325   /* Called when backend is first loaded */
 326   bool (*init)(void);
 327
 328   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 329   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 330
 331   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 332   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 333
 334   /* Called when backend is unloaded */
 335   bool (*close)(void);
 336   /* Called to dump backend status */
 337   void (*status)(void);
 338 };
 339
 340 /* Data structures for dealing with the trusted domain cache */
 341
 342 struct winbindd_tdc_domain {
 343         const char *domain_name;
 344         const char *dns_name;
 345         struct dom_sid sid;
 346         uint32 trust_flags;
 347         uint32 trust_attribs;
 348         uint32 trust_type;
 349 };
 350
 351 /* Switch for listing users or groups */
 352 enum ent_type {
 353         LIST_USERS = 0,
 354         LIST_GROUPS,
 355 };
 356
 357 struct WINBINDD_MEMORY_CREDS {
 358         struct WINBINDD_MEMORY_CREDS *next, *prev;
 359         const char *username; /* lookup key. */
 360         uid_t uid;
 361         int ref_count;
 362         size_t len;
 363         uint8_t *nt_hash; /* Base pointer for the following 2 */
 364         uint8_t *lm_hash;
 365         char *pass;
 366 };
 367
 368 struct WINBINDD_CCACHE_ENTRY {
 369         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 370         const char *principal_name;
 371         const char *ccname;
 372         const char *service;
 373         const char *username;
 374         const char *realm;
 375         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 376         int ref_count;
 377         uid_t uid;
 378         time_t create_time;
 379         time_t renew_until;
 380         time_t refresh_time;
 381         struct timed_event *event;
 382 };
 383
 384 #include "winbindd/winbindd_proto.h"
 385
 386 #define WINBINDD_ESTABLISH_LOOP 30
 387 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 388 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 389 #define DOM_SEQUENCE_NONE ((uint32)-1)
 390
 391 #define winbind_event_context server_event_context
 392
 393 #endif /* _WINBINDD_H */