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