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         struct tevent_req *io_req; /* wb_req_read_* or wb_resp_write_* */
  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         uint32_t next_user;
  79         struct wbint_RidArray rids;
  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 /* Our connection to the DC */
  90
  91 struct winbindd_cm_conn {
  92         struct cli_state *cli;
  93
  94         enum dcerpc_AuthLevel auth_level;
  95
  96         struct rpc_pipe_client *samr_pipe;
  97         struct policy_handle sam_connect_handle, sam_domain_handle;
  98
  99         struct rpc_pipe_client *lsa_pipe;
 100         struct rpc_pipe_client *lsa_pipe_tcp;
 101         struct policy_handle lsa_policy;
 102
 103         struct rpc_pipe_client *netlogon_pipe;
 104         struct netlogon_creds_cli_context *netlogon_creds;
 105         uint32_t netlogon_flags;
 106         bool netlogon_force_reauth;
 107 };
 108
 109 /* Async child */
 110
 111 struct winbindd_domain;
 112
 113 struct winbindd_child_dispatch_table {
 114         const char *name;
 115         enum winbindd_cmd struct_cmd;
 116         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 117                                           struct winbindd_cli_state *state);
 118 };
 119
 120 struct winbindd_child {
 121         struct winbindd_child *next, *prev;
 122
 123         pid_t pid;
 124         struct winbindd_domain *domain;
 125         char *logfilename;
 126
 127         int sock;
 128         struct tevent_queue *queue;
 129         struct dcerpc_binding_handle *binding_handle;
 130
 131         struct tevent_timer *lockout_policy_event;
 132         struct tevent_timer *machine_password_change_event;
 133
 134         const struct winbindd_child_dispatch_table *table;
 135 };
 136
 137 /* Structures to hold per domain information */
 138
 139 struct winbindd_domain {
 140         char *name;                            /* Domain name (NetBIOS) */
 141         char *alt_name;                        /* alt Domain name, if any (FQDN for ADS) */
 142         char *forest_name;                     /* Name of the AD forest we're in */
 143         struct dom_sid sid;                           /* SID for this domain */
 144         uint32_t domain_flags;                   /* Domain flags from netlogon.h */
 145         uint32_t domain_type;                    /* Domain type from netlogon.h */
 146         uint32_t domain_trust_attribs;           /* Trust attribs from netlogon.h */
 147         bool initialized;                      /* Did we already ask for the domain mode? */
 148         bool native_mode;                      /* is this a win2k domain in native mode ? */
 149         bool active_directory;                 /* is this a win2k active directory ? */
 150         bool primary;                          /* is this our primary domain ? */
 151         bool internal;                         /* BUILTIN and member SAM */
 152         bool rodc;                             /* Are we an RODC for this AD domain? (do some operations locally) */
 153         bool online;                           /* is this domain available ? */
 154         time_t startup_time;                   /* When we set "startup" true. monotonic clock */
 155         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 156
 157         bool can_do_ncacn_ip_tcp;
 158
 159         /*
 160          * Lookup methods for this domain (LDAP or RPC). The backend
 161          * methods are used by the cache layer.
 162          */
 163         struct winbindd_methods *backend;
 164
 165         /* Private data for the backends (used for connection cache) */
 166
 167         void *private_data;
 168
 169         /* A working DC */
 170         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 171         char *dcname;
 172         struct sockaddr_storage dcaddr;
 173
 174         /* Sequence number stuff */
 175
 176         time_t last_seq_check;
 177         uint32_t sequence_number;
 178         NTSTATUS last_status;
 179
 180         /* The smb connection */
 181
 182         struct winbindd_cm_conn conn;
 183
 184         /* The child pid we're talking to */
 185
 186         struct winbindd_child *children;
 187
 188         /* Callback we use to try put us back online. */
 189
 190         uint32_t check_online_timeout;
 191         struct tevent_timer *check_online_event;
 192
 193         /* Linked list info */
 194
 195         struct winbindd_domain *prev, *next;
 196 };
 197
 198 struct wb_acct_info {
 199         fstring acct_name; /* account name */
 200         fstring acct_desc; /* account name */
 201         uint32_t rid; /* domain-relative RID */
 202 };
 203
 204 /* per-domain methods. This is how LDAP vs RPC is selected
 205  */
 206 struct winbindd_methods {
 207         /* does this backend provide a consistent view of the data? (ie. is the primary group
 208            always correct) */
 209         bool consistent;
 210
 211         /* get a list of users, returning a wbint_userinfo for each one */
 212         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 213                                    TALLOC_CTX *mem_ctx,
 214                                    uint32_t **rids);
 215
 216         /* get a list of domain groups */
 217         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 218                                     TALLOC_CTX *mem_ctx,
 219                                     uint32_t *num_entries,
 220                                     struct wb_acct_info **info);
 221
 222         /* get a list of domain local groups */
 223         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 224                                     TALLOC_CTX *mem_ctx,
 225                                     uint32_t *num_entries,
 226                                     struct wb_acct_info **info);
 227
 228         /* convert one user or group name to a sid */
 229         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 230                                 TALLOC_CTX *mem_ctx,
 231                                 const char *domain_name,
 232                                 const char *name,
 233                                 uint32_t flags,
 234                                 struct dom_sid *sid,
 235                                 enum lsa_SidType *type);
 236
 237         /* convert a sid to a user or group name */
 238         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 239                                 TALLOC_CTX *mem_ctx,
 240                                 const struct dom_sid *sid,
 241                                 char **domain_name,
 242                                 char **name,
 243                                 enum lsa_SidType *type);
 244
 245         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 246                                   TALLOC_CTX *mem_ctx,
 247                                   const struct dom_sid *domain_sid,
 248                                   uint32_t *rids,
 249                                   size_t num_rids,
 250                                   char **domain_name,
 251                                   char ***names,
 252                                   enum lsa_SidType **types);
 253
 254         /* lookup all groups that a user is a member of. The backend
 255            can also choose to lookup by username or rid for this
 256            function */
 257         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 258                                       TALLOC_CTX *mem_ctx,
 259                                       const struct dom_sid *user_sid,
 260                                       uint32_t *num_groups, struct dom_sid **user_gids);
 261
 262         /* Lookup all aliases that the sids delivered are member of. This is
 263          * to implement 'domain local groups' correctly */
 264         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 265                                        TALLOC_CTX *mem_ctx,
 266                                        uint32_t num_sids,
 267                                        const struct dom_sid *sids,
 268                                        uint32_t *num_aliases,
 269                                        uint32_t **alias_rids);
 270
 271         /* find all members of the group with the specified group_rid */
 272         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 273                                     TALLOC_CTX *mem_ctx,
 274                                     const struct dom_sid *group_sid,
 275                                     enum lsa_SidType type,
 276                                     uint32_t *num_names,
 277                                     struct dom_sid **sid_mem, char ***names,
 278                                     uint32_t **name_types);
 279
 280         /* return the current global sequence number */
 281         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32_t *seq);
 282
 283         /* return the lockout policy */
 284         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 285                                    TALLOC_CTX *mem_ctx,
 286                                    struct samr_DomInfo12 *lockout_policy);
 287
 288         /* return the lockout policy */
 289         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 290                                     TALLOC_CTX *mem_ctx,
 291                                     struct samr_DomInfo1 *password_policy);
 292
 293         /* enumerate trusted domains */
 294         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 295                                     TALLOC_CTX *mem_ctx,
 296                                     struct netr_DomainTrustList *trusts);
 297 };
 298
 299 /* Filled out by IDMAP backends */
 300 struct winbindd_idmap_methods {
 301   /* Called when backend is first loaded */
 302   bool (*init)(void);
 303
 304   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 305   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 306
 307   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 308   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 309
 310   /* Called when backend is unloaded */
 311   bool (*close)(void);
 312   /* Called to dump backend status */
 313   void (*status)(void);
 314 };
 315
 316 /* Data structures for dealing with the trusted domain cache */
 317
 318 struct winbindd_tdc_domain {
 319         const char *domain_name;
 320         const char *dns_name;
 321         struct dom_sid sid;
 322         uint32_t trust_flags;
 323         uint32_t trust_attribs;
 324         uint32_t trust_type;
 325 };
 326
 327 struct WINBINDD_MEMORY_CREDS {
 328         struct WINBINDD_MEMORY_CREDS *next, *prev;
 329         const char *username; /* lookup key. */
 330         uid_t uid;
 331         int ref_count;
 332         size_t len;
 333         uint8_t *nt_hash; /* Base pointer for the following 2 */
 334         uint8_t *lm_hash;
 335         char *pass;
 336 };
 337
 338 struct WINBINDD_CCACHE_ENTRY {
 339         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 340         const char *principal_name;
 341         const char *ccname;
 342         const char *service;
 343         const char *username;
 344         const char *realm;
 345         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 346         int ref_count;
 347         uid_t uid;
 348         time_t create_time;
 349         time_t renew_until;
 350         time_t refresh_time;
 351         struct tevent_timer *event;
 352 };
 353
 354 #include "winbindd/winbindd_proto.h"
 355
 356 #define WINBINDD_ESTABLISH_LOOP 30
 357 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 358 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 359 #define DOM_SEQUENCE_NONE ((uint32_t)-1)
 360
 361 #endif /* _WINBINDD_H */