source3/nsswitch/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 Library General Public
  11    License as published by the Free Software Foundation; either
  12    version 2 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 Library General Public
  20    License along with this library; if not, write to the
  21    Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA  02111-1307, USA.
  23 */
  24
  25 #ifndef _WINBINDD_H
  26 #define _WINBINDD_H
  27
  28 #include "nterr.h"
  29
  30 #include "winbindd_nss.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 /* bits for fd_event.flags */
  44 #define EVENT_FD_READ 1
  45 #define EVENT_FD_WRITE 2
  46
  47 struct fd_event {
  48         struct fd_event *next, *prev;
  49         int fd;
  50         int flags; /* see EVENT_FD_* flags */
  51         void (*handler)(struct fd_event *fde, int flags);
  52         void *data;
  53         size_t length, done;
  54         void (*finished)(void *private_data, BOOL success);
  55         void *private_data;
  56 };
  57
  58 struct sid_ctr {
  59         DOM_SID *sid;
  60         BOOL finished;
  61         const char *domain;
  62         const char *name;
  63         enum lsa_SidType type;
  64 };
  65
  66 struct winbindd_cli_state {
  67         struct winbindd_cli_state *prev, *next;   /* Linked list pointers */
  68         int sock;                                 /* Open socket from client */
  69         struct fd_event fd_event;
  70         pid_t pid;                                /* pid of client */
  71         BOOL finished;                            /* Can delete from list */
  72         BOOL write_extra_data;                    /* Write extra_data field */
  73         time_t last_access;                       /* Time of last access (read or write) */
  74         BOOL privileged;                           /* Is the client 'privileged' */
  75
  76         TALLOC_CTX *mem_ctx;                      /* memory per request */
  77         struct winbindd_request request;          /* Request from client */
  78         struct winbindd_response response;        /* Respose to client */
  79         BOOL getpwent_initialized;                /* Has getpwent_state been
  80                                                    * initialized? */
  81         BOOL getgrent_initialized;                /* Has getgrent_state been
  82                                                    * initialized? */
  83         struct getent_state *getpwent_state;      /* State for getpwent() */
  84         struct getent_state *getgrent_state;      /* State for getgrent() */
  85 };
  86
  87 /* State between get{pw,gr}ent() calls */
  88
  89 struct getent_state {
  90         struct getent_state *prev, *next;
  91         void *sam_entries;
  92         uint32 sam_entry_index, num_sam_entries;
  93         BOOL got_sam_entries;
  94         fstring domain_name;
  95 };
  96
  97 /* Storage for cached getpwent() user entries */
  98
  99 struct getpwent_user {
 100         fstring name;                        /* Account name */
 101         fstring gecos;                       /* User information */
 102         fstring homedir;                     /* User Home Directory */
 103         fstring shell;                       /* User Login Shell */
 104         DOM_SID user_sid;                    /* NT user and primary group SIDs */
 105         DOM_SID group_sid;
 106 };
 107
 108 /* Server state structure */
 109
 110 struct winbindd_state {
 111
 112         /* User and group id pool */
 113
 114         uid_t uid_low, uid_high;               /* Range of uids to allocate */
 115         gid_t gid_low, gid_high;               /* Range of gids to allocate */
 116 };
 117
 118 extern struct winbindd_state server_state;  /* Server information */
 119
 120 typedef struct {
 121         char *acct_name;
 122         char *full_name;
 123         char *homedir;
 124         char *shell;
 125         DOM_SID user_sid;                    /* NT user and primary group SIDs */
 126         DOM_SID group_sid;
 127 } WINBIND_USERINFO;
 128
 129 /* Our connection to the DC */
 130
 131 struct winbindd_cm_conn {
 132         struct cli_state *cli;
 133
 134         struct rpc_pipe_client *samr_pipe;
 135         POLICY_HND sam_connect_handle, sam_domain_handle;
 136
 137         struct rpc_pipe_client *lsa_pipe;
 138         POLICY_HND lsa_policy;
 139
 140         struct rpc_pipe_client *netlogon_pipe;
 141 };
 142
 143 struct winbindd_async_request;
 144
 145 /* Async child */
 146
 147 struct winbindd_child {
 148         struct winbindd_child *next, *prev;
 149
 150         pid_t pid;
 151         struct winbindd_domain *domain;
 152         pstring logfilename;
 153
 154         TALLOC_CTX *mem_ctx;
 155         struct fd_event event;
 156         struct timed_event *lockout_policy_event;
 157         struct winbindd_async_request *requests;
 158 };
 159
 160 /* Structures to hold per domain information */
 161
 162 struct winbindd_domain {
 163         fstring name;                          /* Domain name */
 164         fstring alt_name;                      /* alt Domain name (if any) */
 165         DOM_SID sid;                           /* SID for this domain */
 166         BOOL initialized;                      /* Did we already ask for the domain mode? */
 167         BOOL native_mode;                      /* is this a win2k domain in native mode ? */
 168         BOOL active_directory;                 /* is this a win2k active directory ? */
 169         BOOL primary;                          /* is this our primary domain ? */
 170         BOOL internal;                         /* BUILTIN and member SAM */
 171         BOOL online;                           /* is this domain available ? */
 172         time_t startup_time;                   /* When we set "startup" true. */
 173         BOOL startup;                          /* are we in the first 30 seconds after startup_time ? */
 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         /* A working DC */
 187         fstring dcname;
 188         struct sockaddr_in dcaddr;
 189
 190         /* Sequence number stuff */
 191
 192         time_t last_seq_check;
 193         uint32 sequence_number;
 194         NTSTATUS last_status;
 195
 196         /* The smb connection */
 197
 198         struct winbindd_cm_conn conn;
 199
 200         /* The child pid we're talking to */
 201
 202         struct winbindd_child child;
 203
 204         /* Callback we use to try put us back online. */
 205
 206         struct timed_event *check_online_event;
 207
 208         /* Linked list info */
 209
 210         struct winbindd_domain *prev, *next;
 211 };
 212
 213 /* per-domain methods. This is how LDAP vs RPC is selected
 214  */
 215 struct winbindd_methods {
 216         /* does this backend provide a consistent view of the data? (ie. is the primary group
 217            always correct) */
 218         BOOL consistent;
 219
 220         /* get a list of users, returning a WINBIND_USERINFO for each one */
 221         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 222                                    TALLOC_CTX *mem_ctx,
 223                                    uint32 *num_entries,
 224                                    WINBIND_USERINFO **info);
 225
 226         /* get a list of domain groups */
 227         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 228                                     TALLOC_CTX *mem_ctx,
 229                                     uint32 *num_entries,
 230                                     struct acct_info **info);
 231
 232         /* get a list of domain local groups */
 233         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 234                                     TALLOC_CTX *mem_ctx,
 235                                     uint32 *num_entries,
 236                                     struct acct_info **info);
 237
 238         /* convert one user or group name to a sid */
 239         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 240                                 TALLOC_CTX *mem_ctx,
 241                                 const char *domain_name,
 242                                 const char *name,
 243                                 DOM_SID *sid,
 244                                 enum lsa_SidType *type);
 245
 246         /* convert a sid to a user or group name */
 247         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 248                                 TALLOC_CTX *mem_ctx,
 249                                 const DOM_SID *sid,
 250                                 char **domain_name,
 251                                 char **name,
 252                                 enum lsa_SidType *type);
 253
 254         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 255                                   TALLOC_CTX *mem_ctx,
 256                                   const DOM_SID *domain_sid,
 257                                   uint32 *rids,
 258                                   size_t num_rids,
 259                                   char **domain_name,
 260                                   char ***names,
 261                                   enum lsa_SidType **types);
 262
 263         /* lookup user info for a given SID */
 264         NTSTATUS (*query_user)(struct winbindd_domain *domain,
 265                                TALLOC_CTX *mem_ctx,
 266                                const DOM_SID *user_sid,
 267                                WINBIND_USERINFO *user_info);
 268
 269         /* lookup all groups that a user is a member of. The backend
 270            can also choose to lookup by username or rid for this
 271            function */
 272         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 273                                       TALLOC_CTX *mem_ctx,
 274                                       const DOM_SID *user_sid,
 275                                       uint32 *num_groups, DOM_SID **user_gids);
 276
 277         /* Lookup all aliases that the sids delivered are member of. This is
 278          * to implement 'domain local groups' correctly */
 279         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 280                                        TALLOC_CTX *mem_ctx,
 281                                        uint32 num_sids,
 282                                        const DOM_SID *sids,
 283                                        uint32 *num_aliases,
 284                                        uint32 **alias_rids);
 285
 286         /* find all members of the group with the specified group_rid */
 287         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 288                                     TALLOC_CTX *mem_ctx,
 289                                     const DOM_SID *group_sid,
 290                                     uint32 *num_names,
 291                                     DOM_SID **sid_mem, char ***names,
 292                                     uint32 **name_types);
 293
 294         /* return the current global sequence number */
 295         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32 *seq);
 296
 297         /* return the lockout policy */
 298         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 299                                    TALLOC_CTX *mem_ctx,
 300                                    SAM_UNK_INFO_12 *lockout_policy);
 301
 302         /* return the lockout policy */
 303         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 304                                     TALLOC_CTX *mem_ctx,
 305                                     SAM_UNK_INFO_1 *password_policy);
 306
 307         /* enumerate trusted domains */
 308         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 309                                     TALLOC_CTX *mem_ctx,
 310                                     uint32 *num_domains,
 311                                     char ***names,
 312                                     char ***alt_names,
 313                                     DOM_SID **dom_sids);
 314 };
 315
 316 /* Used to glue a policy handle and cli_state together */
 317
 318 typedef struct {
 319         struct cli_state *cli;
 320         POLICY_HND pol;
 321 } CLI_POLICY_HND;
 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, DOM_SID *sid);
 329   BOOL (*get_sid_from_gid)(gid_t gid, DOM_SID *sid);
 330
 331   BOOL (*get_uid_from_sid)(DOM_SID *sid, uid_t *uid);
 332   BOOL (*get_gid_from_sid)(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 #include "nsswitch/winbindd_proto.h"
 341
 342 #define WINBINDD_ESTABLISH_LOOP 30
 343 #define WINBINDD_RESCAN_FREQ 300
 344 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 345 #define DOM_SEQUENCE_NONE ((uint32)-1)
 346
 347 #endif /* _WINBINDD_H */