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 "../lib/util/tevent_ntstatus.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 winbindd_cli_state {
  47         struct winbindd_cli_state *prev, *next;   /* Linked list pointers */
  48         int sock;                                 /* Open socket from client */
  49         pid_t pid;                                /* pid of client */
  50         time_t last_access;                       /* Time of last access (read or write) */
  51         bool privileged;                           /* Is the client 'privileged' */
  52
  53         TALLOC_CTX *mem_ctx;                      /* memory per request */
  54         const char *cmd_name;
  55         NTSTATUS (*recv_fn)(struct tevent_req *req,
  56                             struct winbindd_response *presp);
  57         struct winbindd_request *request;         /* Request from client */
  58         struct tevent_queue *out_queue;
  59         struct winbindd_response *response;        /* Respose to client */
  60         struct tevent_req *io_req; /* wb_req_read_* or wb_resp_write_* */
  61
  62         struct getpwent_state *pwent_state; /* State for getpwent() */
  63         struct getgrent_state *grent_state; /* State for getgrent() */
  64 };
  65
  66 struct getpwent_state {
  67         struct winbindd_domain *domain;
  68         uint32_t next_user;
  69         struct wbint_RidArray rids;
  70 };
  71
  72 struct getgrent_state {
  73         struct winbindd_domain *domain;
  74         int next_group;
  75         int num_groups;
  76         struct wbint_Principal *groups;
  77 };
  78
  79 /* Our connection to the DC */
  80
  81 struct winbindd_cm_conn {
  82         struct cli_state *cli;
  83
  84         enum dcerpc_AuthLevel auth_level;
  85
  86         struct rpc_pipe_client *samr_pipe;
  87         struct policy_handle sam_connect_handle, sam_domain_handle;
  88
  89         struct rpc_pipe_client *lsa_pipe;
  90         struct rpc_pipe_client *lsa_pipe_tcp;
  91         struct policy_handle lsa_policy;
  92
  93         struct rpc_pipe_client *netlogon_pipe;
  94         struct netlogon_creds_cli_context *netlogon_creds_ctx;
  95         bool netlogon_force_reauth;
  96 };
  97
  98 /* Async child */
  99
 100 struct winbindd_domain;
 101
 102 struct winbindd_child_dispatch_table {
 103         const char *name;
 104         enum winbindd_cmd struct_cmd;
 105         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 106                                           struct winbindd_cli_state *state);
 107 };
 108
 109 struct winbindd_child {
 110         pid_t pid;
 111         struct winbindd_domain *domain;
 112         char *logfilename;
 113
 114         int sock;
 115         struct tevent_fd *monitor_fde; /* Watch for dead children/sockets */
 116         struct tevent_queue *queue;
 117         struct dcerpc_binding_handle *binding_handle;
 118
 119         struct tevent_timer *lockout_policy_event;
 120         struct tevent_timer *machine_password_change_event;
 121
 122         const struct winbindd_child_dispatch_table *table;
 123 };
 124
 125 /* Structures to hold per domain information */
 126
 127 struct winbindd_domain {
 128         char *name;                            /* Domain name (NetBIOS) */
 129         char *alt_name;                        /* alt Domain name, if any (FQDN for ADS) */
 130         char *forest_name;                     /* Name of the AD forest we're in */
 131         struct dom_sid sid;                           /* SID for this domain */
 132         enum netr_SchannelType secure_channel_type;
 133         uint32_t domain_flags;                   /* Domain flags from netlogon.h */
 134         uint32_t domain_type;                    /* Domain type from netlogon.h */
 135         uint32_t domain_trust_attribs;           /* Trust attribs from netlogon.h */
 136         struct winbindd_domain *routing_domain;
 137         bool initialized;                      /* Did we already ask for the domain mode? */
 138         bool native_mode;                      /* is this a win2k domain in native mode ? */
 139         bool active_directory;                 /* is this a win2k active directory ? */
 140         bool primary;                          /* is this our primary domain ? */
 141         bool internal;                         /* BUILTIN and member SAM */
 142         bool rodc;                             /* Are we an RODC for this AD domain? (do some operations locally) */
 143         bool online;                           /* is this domain available ? */
 144         time_t startup_time;                   /* When we set "startup" true. monotonic clock */
 145         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 146
 147         bool can_do_ncacn_ip_tcp;
 148
 149         /*
 150          * Lookup methods for this domain (LDAP or RPC). The backend
 151          * methods are used by the cache layer.
 152          */
 153         struct winbindd_methods *backend;
 154
 155         /* Private data for the backends (used for connection cache) */
 156
 157         void *private_data;
 158
 159         /* A working DC */
 160         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 161         char *dcname;
 162         struct sockaddr_storage dcaddr;
 163
 164         /* Sequence number stuff */
 165
 166         time_t last_seq_check;
 167         uint32_t sequence_number;
 168         NTSTATUS last_status;
 169
 170         /* The smb connection */
 171
 172         struct winbindd_cm_conn conn;
 173
 174         /* The child pid we're talking to */
 175
 176         struct winbindd_child *children;
 177
 178         struct tevent_queue *queue;
 179         struct dcerpc_binding_handle *binding_handle;
 180
 181         /* Callback we use to try put us back online. */
 182
 183         uint32_t check_online_timeout;
 184         struct tevent_timer *check_online_event;
 185
 186         /* Linked list info */
 187
 188         struct winbindd_domain *prev, *next;
 189 };
 190
 191 struct wb_acct_info {
 192         fstring acct_name; /* account name */
 193         fstring acct_desc; /* account name */
 194         uint32_t rid; /* domain-relative RID */
 195 };
 196
 197 /* per-domain methods. This is how LDAP vs RPC is selected
 198  */
 199 struct winbindd_methods {
 200         /* does this backend provide a consistent view of the data? (ie. is the primary group
 201            always correct) */
 202         bool consistent;
 203
 204         /* get a list of users, returning a wbint_userinfo for each one */
 205         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 206                                    TALLOC_CTX *mem_ctx,
 207                                    uint32_t **rids);
 208
 209         /* get a list of domain groups */
 210         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 211                                     TALLOC_CTX *mem_ctx,
 212                                     uint32_t *num_entries,
 213                                     struct wb_acct_info **info);
 214
 215         /* get a list of domain local groups */
 216         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 217                                     TALLOC_CTX *mem_ctx,
 218                                     uint32_t *num_entries,
 219                                     struct wb_acct_info **info);
 220
 221         /* convert one user or group name to a sid */
 222         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 223                                 TALLOC_CTX *mem_ctx,
 224                                 const char *domain_name,
 225                                 const char *name,
 226                                 uint32_t flags,
 227                                 const char **pdom_name,
 228                                 struct dom_sid *sid,
 229                                 enum lsa_SidType *type);
 230
 231         /* convert a sid to a user or group name */
 232         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 233                                 TALLOC_CTX *mem_ctx,
 234                                 const struct dom_sid *sid,
 235                                 char **domain_name,
 236                                 char **name,
 237                                 enum lsa_SidType *type);
 238
 239         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 240                                   TALLOC_CTX *mem_ctx,
 241                                   const struct dom_sid *domain_sid,
 242                                   uint32_t *rids,
 243                                   size_t num_rids,
 244                                   char **domain_name,
 245                                   char ***names,
 246                                   enum lsa_SidType **types);
 247
 248         /* lookup all groups that a user is a member of. The backend
 249            can also choose to lookup by username or rid for this
 250            function */
 251         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 252                                       TALLOC_CTX *mem_ctx,
 253                                       const struct dom_sid *user_sid,
 254                                       uint32_t *num_groups, struct dom_sid **user_gids);
 255
 256         /* Lookup all aliases that the sids delivered are member of. This is
 257          * to implement 'domain local groups' correctly */
 258         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 259                                        TALLOC_CTX *mem_ctx,
 260                                        uint32_t num_sids,
 261                                        const struct dom_sid *sids,
 262                                        uint32_t *num_aliases,
 263                                        uint32_t **alias_rids);
 264
 265         /* find all members of the group with the specified group_rid */
 266         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 267                                     TALLOC_CTX *mem_ctx,
 268                                     const struct dom_sid *group_sid,
 269                                     enum lsa_SidType type,
 270                                     uint32_t *num_names,
 271                                     struct dom_sid **sid_mem, char ***names,
 272                                     uint32_t **name_types);
 273
 274         /* return the current global sequence number */
 275         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32_t *seq);
 276
 277         /* return the lockout policy */
 278         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 279                                    TALLOC_CTX *mem_ctx,
 280                                    struct samr_DomInfo12 *lockout_policy);
 281
 282         /* return the lockout policy */
 283         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 284                                     TALLOC_CTX *mem_ctx,
 285                                     struct samr_DomInfo1 *password_policy);
 286
 287         /* enumerate trusted domains */
 288         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 289                                     TALLOC_CTX *mem_ctx,
 290                                     struct netr_DomainTrustList *trusts);
 291 };
 292
 293 /* Filled out by IDMAP backends */
 294 struct winbindd_idmap_methods {
 295   /* Called when backend is first loaded */
 296   bool (*init)(void);
 297
 298   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 299   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 300
 301   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 302   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 303
 304   /* Called when backend is unloaded */
 305   bool (*close)(void);
 306   /* Called to dump backend status */
 307   void (*status)(void);
 308 };
 309
 310 /* Data structures for dealing with the trusted domain cache */
 311
 312 struct winbindd_tdc_domain {
 313         const char *domain_name;
 314         const char *dns_name;
 315         struct dom_sid sid;
 316         uint32_t trust_flags;
 317         uint32_t trust_attribs;
 318         uint32_t trust_type;
 319 };
 320
 321 struct WINBINDD_MEMORY_CREDS {
 322         struct WINBINDD_MEMORY_CREDS *next, *prev;
 323         const char *username; /* lookup key. */
 324         uid_t uid;
 325         int ref_count;
 326         size_t len;
 327         uint8_t *nt_hash; /* Base pointer for the following 2 */
 328         uint8_t *lm_hash;
 329         char *pass;
 330 };
 331
 332 struct WINBINDD_CCACHE_ENTRY {
 333         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 334         const char *principal_name;
 335         const char *ccname;
 336         const char *service;
 337         const char *username;
 338         const char *realm;
 339         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 340         int ref_count;
 341         uid_t uid;
 342         time_t create_time;
 343         time_t renew_until;
 344         time_t refresh_time;
 345         struct tevent_timer *event;
 346 };
 347
 348 #include "winbindd/winbindd_proto.h"
 349
 350 #define WINBINDD_ESTABLISH_LOOP 30
 351 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 352 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 353 #define DOM_SEQUENCE_NONE ((uint32_t)-1)
 354
 355 #endif /* _WINBINDD_H */