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/winbind.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
  71         struct getpwent_state *pwent_state; /* State for getpwent() */
  72         struct getgrent_state *grent_state; /* State for getgrent() */
  73 };
  74
  75 struct getpwent_state {
  76         struct winbindd_domain *domain;
  77         int next_user;
  78         int num_users;
  79         struct wbint_userinfo *users;
  80 };
  81
  82 struct getgrent_state {
  83         struct winbindd_domain *domain;
  84         int next_group;
  85         int num_groups;
  86         struct wbint_Principal *groups;
  87 };
  88
  89 /* Storage for cached getpwent() user entries */
  90
  91 struct getpwent_user {
  92         fstring name;                        /* Account name */
  93         fstring gecos;                       /* User information */
  94         fstring homedir;                     /* User Home Directory */
  95         fstring shell;                       /* User Login Shell */
  96         struct dom_sid user_sid;                    /* NT user and primary group SIDs */
  97         struct dom_sid group_sid;
  98 };
  99
 100 /* Our connection to the DC */
 101
 102 struct winbindd_cm_conn {
 103         struct cli_state *cli;
 104
 105         enum dcerpc_AuthLevel auth_level;
 106
 107         struct rpc_pipe_client *samr_pipe;
 108         struct policy_handle sam_connect_handle, sam_domain_handle;
 109
 110         struct rpc_pipe_client *lsa_pipe;
 111         struct rpc_pipe_client *lsa_pipe_tcp;
 112         struct policy_handle lsa_policy;
 113
 114         struct rpc_pipe_client *netlogon_pipe;
 115         struct netlogon_creds_cli_context *netlogon_creds;
 116         uint32_t netlogon_flags;
 117         bool netlogon_force_reauth;
 118 };
 119
 120 /* Async child */
 121
 122 struct winbindd_domain;
 123
 124 struct winbindd_child_dispatch_table {
 125         const char *name;
 126         enum winbindd_cmd struct_cmd;
 127         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 128                                           struct winbindd_cli_state *state);
 129 };
 130
 131 struct winbindd_child {
 132         struct winbindd_child *next, *prev;
 133
 134         pid_t pid;
 135         struct winbindd_domain *domain;
 136         char *logfilename;
 137
 138         int sock;
 139         struct tevent_queue *queue;
 140         struct dcerpc_binding_handle *binding_handle;
 141
 142         struct tevent_timer *lockout_policy_event;
 143         struct tevent_timer *machine_password_change_event;
 144
 145         const struct winbindd_child_dispatch_table *table;
 146 };
 147
 148 /* Structures to hold per domain information */
 149
 150 struct winbindd_domain {
 151         char *name;                            /* Domain name (NetBIOS) */
 152         char *alt_name;                        /* alt Domain name, if any (FQDN for ADS) */
 153         char *forest_name;                     /* Name of the AD forest we're in */
 154         struct dom_sid sid;                           /* SID for this domain */
 155         uint32_t domain_flags;                   /* Domain flags from netlogon.h */
 156         uint32_t domain_type;                    /* Domain type from netlogon.h */
 157         uint32_t domain_trust_attribs;           /* Trust attribs from netlogon.h */
 158         bool initialized;                      /* Did we already ask for the domain mode? */
 159         bool native_mode;                      /* is this a win2k domain in native mode ? */
 160         bool active_directory;                 /* is this a win2k active directory ? */
 161         bool primary;                          /* is this our primary domain ? */
 162         bool internal;                         /* BUILTIN and member SAM */
 163         bool rodc;                             /* Are we an RODC for this AD domain? (do some operations locally) */
 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_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         char *dcname;
 191         struct sockaddr_storage dcaddr;
 192
 193         /* Sequence number stuff */
 194
 195         time_t last_seq_check;
 196         uint32_t 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 *children;
 206
 207         /* Callback we use to try put us back online. */
 208
 209         uint32_t check_online_timeout;
 210         struct tevent_timer *check_online_event;
 211
 212         /* Linked list info */
 213
 214         struct winbindd_domain *prev, *next;
 215 };
 216
 217 struct wb_acct_info {
 218         fstring acct_name; /* account name */
 219         fstring acct_desc; /* account name */
 220         uint32_t rid; /* domain-relative RID */
 221 };
 222
 223 /* per-domain methods. This is how LDAP vs RPC is selected
 224  */
 225 struct winbindd_methods {
 226         /* does this backend provide a consistent view of the data? (ie. is the primary group
 227            always correct) */
 228         bool consistent;
 229
 230         /* get a list of users, returning a wbint_userinfo for each one */
 231         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 232                                    TALLOC_CTX *mem_ctx,
 233                                    uint32_t *num_entries,
 234                                    struct wbint_userinfo **info);
 235
 236         /* get a list of domain groups */
 237         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 238                                     TALLOC_CTX *mem_ctx,
 239                                     uint32_t *num_entries,
 240                                     struct wb_acct_info **info);
 241
 242         /* get a list of domain local groups */
 243         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 244                                     TALLOC_CTX *mem_ctx,
 245                                     uint32_t *num_entries,
 246                                     struct wb_acct_info **info);
 247
 248         /* convert one user or group name to a sid */
 249         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 250                                 TALLOC_CTX *mem_ctx,
 251                                 const char *domain_name,
 252                                 const char *name,
 253                                 uint32_t flags,
 254                                 struct dom_sid *sid,
 255                                 enum lsa_SidType *type);
 256
 257         /* convert a sid to a user or group name */
 258         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 259                                 TALLOC_CTX *mem_ctx,
 260                                 const struct dom_sid *sid,
 261                                 char **domain_name,
 262                                 char **name,
 263                                 enum lsa_SidType *type);
 264
 265         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 266                                   TALLOC_CTX *mem_ctx,
 267                                   const struct dom_sid *domain_sid,
 268                                   uint32_t *rids,
 269                                   size_t num_rids,
 270                                   char **domain_name,
 271                                   char ***names,
 272                                   enum lsa_SidType **types);
 273
 274         /* lookup user info for a given SID */
 275         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 276                                TALLOC_CTX *mem_ctx,
 277                                const struct dom_sid *user_sid,
 278                                struct wbint_userinfo *user_info);
 279
 280         /* lookup all groups that a user is a member of. The backend
 281            can also choose to lookup by username or rid for this
 282            function */
 283         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 284                                       TALLOC_CTX *mem_ctx,
 285                                       const struct dom_sid *user_sid,
 286                                       uint32_t *num_groups, struct dom_sid **user_gids);
 287
 288         /* Lookup all aliases that the sids delivered are member of. This is
 289          * to implement 'domain local groups' correctly */
 290         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 291                                        TALLOC_CTX *mem_ctx,
 292                                        uint32_t num_sids,
 293                                        const struct dom_sid *sids,
 294                                        uint32_t *num_aliases,
 295                                        uint32_t **alias_rids);
 296
 297         /* find all members of the group with the specified group_rid */
 298         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 299                                     TALLOC_CTX *mem_ctx,
 300                                     const struct dom_sid *group_sid,
 301                                     enum lsa_SidType type,
 302                                     uint32_t *num_names,
 303                                     struct dom_sid **sid_mem, char ***names,
 304                                     uint32_t **name_types);
 305
 306         /* return the current global sequence number */
 307         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32_t *seq);
 308
 309         /* return the lockout policy */
 310         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 311                                    TALLOC_CTX *mem_ctx,
 312                                    struct samr_DomInfo12 *lockout_policy);
 313
 314         /* return the lockout policy */
 315         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 316                                     TALLOC_CTX *mem_ctx,
 317                                     struct samr_DomInfo1 *password_policy);
 318
 319         /* enumerate trusted domains */
 320         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 321                                     TALLOC_CTX *mem_ctx,
 322                                     struct netr_DomainTrustList *trusts);
 323 };
 324
 325 /* Filled out by IDMAP backends */
 326 struct winbindd_idmap_methods {
 327   /* Called when backend is first loaded */
 328   bool (*init)(void);
 329
 330   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 331   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 332
 333   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 334   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 335
 336   /* Called when backend is unloaded */
 337   bool (*close)(void);
 338   /* Called to dump backend status */
 339   void (*status)(void);
 340 };
 341
 342 /* Data structures for dealing with the trusted domain cache */
 343
 344 struct winbindd_tdc_domain {
 345         const char *domain_name;
 346         const char *dns_name;
 347         struct dom_sid sid;
 348         uint32_t trust_flags;
 349         uint32_t trust_attribs;
 350         uint32_t trust_type;
 351 };
 352
 353 /* Switch for listing users or groups */
 354 enum ent_type {
 355         LIST_USERS = 0,
 356         LIST_GROUPS,
 357 };
 358
 359 struct WINBINDD_MEMORY_CREDS {
 360         struct WINBINDD_MEMORY_CREDS *next, *prev;
 361         const char *username; /* lookup key. */
 362         uid_t uid;
 363         int ref_count;
 364         size_t len;
 365         uint8_t *nt_hash; /* Base pointer for the following 2 */
 366         uint8_t *lm_hash;
 367         char *pass;
 368 };
 369
 370 struct WINBINDD_CCACHE_ENTRY {
 371         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 372         const char *principal_name;
 373         const char *ccname;
 374         const char *service;
 375         const char *username;
 376         const char *realm;
 377         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 378         int ref_count;
 379         uid_t uid;
 380         time_t create_time;
 381         time_t renew_until;
 382         time_t refresh_time;
 383         struct tevent_timer *event;
 384 };
 385
 386 #include "winbindd/winbindd_proto.h"
 387
 388 #define WINBINDD_ESTABLISH_LOOP 30
 389 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 390 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 391 #define DOM_SEQUENCE_NONE ((uint32)-1)
 392
 393 #endif /* _WINBINDD_H */