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         char client_name[32];                     /* The process name of the client */
  51         time_t last_access;                       /* Time of last access (read or write) */
  52         bool privileged;                           /* Is the client 'privileged' */
  53
  54         TALLOC_CTX *mem_ctx;                      /* memory per request */
  55         const char *cmd_name;
  56         NTSTATUS (*recv_fn)(struct tevent_req *req,
  57                             struct winbindd_response *presp);
  58         struct winbindd_request *request;         /* Request from client */
  59         struct tevent_queue *out_queue;
  60         struct winbindd_response *response;        /* Respose to client */
  61         struct tevent_req *io_req; /* wb_req_read_* or wb_resp_write_* */
  62
  63         struct getpwent_state *pwent_state; /* State for getpwent() */
  64         struct getgrent_state *grent_state; /* State for getgrent() */
  65 };
  66
  67 struct getpwent_state {
  68         struct winbindd_domain *domain;
  69         uint32_t next_user;
  70         struct wbint_RidArray rids;
  71 };
  72
  73 struct getgrent_state {
  74         struct winbindd_domain *domain;
  75         int next_group;
  76         int num_groups;
  77         struct wbint_Principal *groups;
  78 };
  79
  80 /* Our connection to the DC */
  81
  82 struct winbindd_cm_conn {
  83         struct cli_state *cli;
  84
  85         enum dcerpc_AuthLevel auth_level;
  86
  87         struct rpc_pipe_client *samr_pipe;
  88         struct policy_handle sam_connect_handle, sam_domain_handle;
  89
  90         struct rpc_pipe_client *lsa_pipe;
  91         struct rpc_pipe_client *lsa_pipe_tcp;
  92         struct policy_handle lsa_policy;
  93
  94         struct rpc_pipe_client *netlogon_pipe;
  95         struct netlogon_creds_cli_context *netlogon_creds_ctx;
  96         bool netlogon_force_reauth;
  97 };
  98
  99 /* Async child */
 100
 101 struct winbindd_domain;
 102
 103 struct winbindd_child_dispatch_table {
 104         const char *name;
 105         enum winbindd_cmd struct_cmd;
 106         enum winbindd_result (*struct_fn)(struct winbindd_domain *domain,
 107                                           struct winbindd_cli_state *state);
 108 };
 109
 110 struct winbindd_child {
 111         pid_t pid;
 112         struct winbindd_domain *domain;
 113         char *logfilename;
 114
 115         int sock;
 116         struct tevent_fd *monitor_fde; /* Watch for dead children/sockets */
 117         struct tevent_queue *queue;
 118         struct dcerpc_binding_handle *binding_handle;
 119
 120         struct tevent_timer *lockout_policy_event;
 121         struct tevent_timer *machine_password_change_event;
 122
 123         const struct winbindd_child_dispatch_table *table;
 124 };
 125
 126 /* Structures to hold per domain information */
 127
 128 struct winbindd_domain {
 129         char *name;                            /* Domain name (NetBIOS) */
 130         char *alt_name;                        /* alt Domain name, if any (FQDN for ADS) */
 131         char *forest_name;                     /* Name of the AD forest we're in */
 132         struct dom_sid sid;                           /* SID for this domain */
 133         enum netr_SchannelType secure_channel_type;
 134         uint32_t domain_flags;                   /* Domain flags from netlogon.h */
 135         uint32_t domain_type;                    /* Domain type from netlogon.h */
 136         uint32_t domain_trust_attribs;           /* Trust attribs from netlogon.h */
 137         struct winbindd_domain *routing_domain;
 138         bool initialized;                      /* Did we already ask for the domain mode? */
 139         bool native_mode;                      /* is this a win2k domain in native mode ? */
 140         bool active_directory;                 /* is this a win2k active directory ? */
 141         bool primary;                          /* is this our primary domain ? */
 142         bool internal;                         /* BUILTIN and member SAM */
 143         bool rodc;                             /* Are we an RODC for this AD domain? (do some operations locally) */
 144         bool online;                           /* is this domain available ? */
 145         time_t startup_time;                   /* When we set "startup" true. monotonic clock */
 146         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 147
 148         bool can_do_ncacn_ip_tcp;
 149
 150         /*
 151          * Lookup methods for this domain (LDAP or RPC). The backend
 152          * methods are used by the cache layer.
 153          */
 154         struct winbindd_methods *backend;
 155
 156         /* Private data for the backends (used for connection cache) */
 157
 158         void *private_data;
 159
 160         /* A working DC */
 161         pid_t dc_probe_pid; /* Child we're using to detect the DC. */
 162         char *dcname;
 163         struct sockaddr_storage dcaddr;
 164
 165         /* Sequence number stuff */
 166
 167         time_t last_seq_check;
 168         uint32_t sequence_number;
 169         NTSTATUS last_status;
 170
 171         /* The smb connection */
 172
 173         struct winbindd_cm_conn conn;
 174
 175         /* The child pid we're talking to */
 176
 177         struct winbindd_child *children;
 178
 179         struct tevent_queue *queue;
 180         struct dcerpc_binding_handle *binding_handle;
 181
 182         /* Callback we use to try put us back online. */
 183
 184         uint32_t check_online_timeout;
 185         struct tevent_timer *check_online_event;
 186
 187         /* Linked list info */
 188
 189         struct winbindd_domain *prev, *next;
 190 };
 191
 192 struct wb_acct_info {
 193         const char *acct_name; /* account name */
 194         const char *acct_desc; /* account name */
 195         uint32_t rid; /* domain-relative RID */
 196 };
 197
 198 /* per-domain methods. This is how LDAP vs RPC is selected
 199  */
 200 struct winbindd_methods {
 201         /* does this backend provide a consistent view of the data? (ie. is the primary group
 202            always correct) */
 203         bool consistent;
 204
 205         /* get a list of users, returning a wbint_userinfo for each one */
 206         NTSTATUS (*query_user_list)(struct winbindd_domain *domain,
 207                                    TALLOC_CTX *mem_ctx,
 208                                    uint32_t **rids);
 209
 210         /* get a list of domain groups */
 211         NTSTATUS (*enum_dom_groups)(struct winbindd_domain *domain,
 212                                     TALLOC_CTX *mem_ctx,
 213                                     uint32_t *num_entries,
 214                                     struct wb_acct_info **info);
 215
 216         /* get a list of domain local groups */
 217         NTSTATUS (*enum_local_groups)(struct winbindd_domain *domain,
 218                                     TALLOC_CTX *mem_ctx,
 219                                     uint32_t *num_entries,
 220                                     struct wb_acct_info **info);
 221
 222         /* convert one user or group name to a sid */
 223         NTSTATUS (*name_to_sid)(struct winbindd_domain *domain,
 224                                 TALLOC_CTX *mem_ctx,
 225                                 const char *domain_name,
 226                                 const char *name,
 227                                 uint32_t flags,
 228                                 const char **pdom_name,
 229                                 struct dom_sid *sid,
 230                                 enum lsa_SidType *type);
 231
 232         /* convert a sid to a user or group name */
 233         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 234                                 TALLOC_CTX *mem_ctx,
 235                                 const struct dom_sid *sid,
 236                                 char **domain_name,
 237                                 char **name,
 238                                 enum lsa_SidType *type);
 239
 240         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 241                                   TALLOC_CTX *mem_ctx,
 242                                   const struct dom_sid *domain_sid,
 243                                   uint32_t *rids,
 244                                   size_t num_rids,
 245                                   char **domain_name,
 246                                   char ***names,
 247                                   enum lsa_SidType **types);
 248
 249         /* lookup all groups that a user is a member of. The backend
 250            can also choose to lookup by username or rid for this
 251            function */
 252         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 253                                       TALLOC_CTX *mem_ctx,
 254                                       const struct dom_sid *user_sid,
 255                                       uint32_t *num_groups, struct dom_sid **user_gids);
 256
 257         /* Lookup all aliases that the sids delivered are member of. This is
 258          * to implement 'domain local groups' correctly */
 259         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 260                                        TALLOC_CTX *mem_ctx,
 261                                        uint32_t num_sids,
 262                                        const struct dom_sid *sids,
 263                                        uint32_t *num_aliases,
 264                                        uint32_t **alias_rids);
 265
 266         /* find all members of the group with the specified group_rid */
 267         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 268                                     TALLOC_CTX *mem_ctx,
 269                                     const struct dom_sid *group_sid,
 270                                     enum lsa_SidType type,
 271                                     uint32_t *num_names,
 272                                     struct dom_sid **sid_mem, char ***names,
 273                                     uint32_t **name_types);
 274
 275         /* return the current global sequence number */
 276         NTSTATUS (*sequence_number)(struct winbindd_domain *domain, uint32_t *seq);
 277
 278         /* return the lockout policy */
 279         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 280                                    TALLOC_CTX *mem_ctx,
 281                                    struct samr_DomInfo12 *lockout_policy);
 282
 283         /* return the lockout policy */
 284         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 285                                     TALLOC_CTX *mem_ctx,
 286                                     struct samr_DomInfo1 *password_policy);
 287
 288         /* enumerate trusted domains */
 289         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 290                                     TALLOC_CTX *mem_ctx,
 291                                     struct netr_DomainTrustList *trusts);
 292 };
 293
 294 /* Filled out by IDMAP backends */
 295 struct winbindd_idmap_methods {
 296   /* Called when backend is first loaded */
 297   bool (*init)(void);
 298
 299   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 300   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 301
 302   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 303   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 304
 305   /* Called when backend is unloaded */
 306   bool (*close)(void);
 307   /* Called to dump backend status */
 308   void (*status)(void);
 309 };
 310
 311 /* Data structures for dealing with the trusted domain cache */
 312
 313 struct winbindd_tdc_domain {
 314         const char *domain_name;
 315         const char *dns_name;
 316         struct dom_sid sid;
 317         uint32_t trust_flags;
 318         uint32_t trust_attribs;
 319         uint32_t trust_type;
 320 };
 321
 322 struct WINBINDD_MEMORY_CREDS {
 323         struct WINBINDD_MEMORY_CREDS *next, *prev;
 324         const char *username; /* lookup key. */
 325         uid_t uid;
 326         int ref_count;
 327         size_t len;
 328         uint8_t *nt_hash; /* Base pointer for the following 2 */
 329         uint8_t *lm_hash;
 330         char *pass;
 331 };
 332
 333 struct WINBINDD_CCACHE_ENTRY {
 334         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 335         const char *principal_name;
 336         const char *ccname;
 337         const char *service;
 338         const char *username;
 339         const char *realm;
 340         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 341         int ref_count;
 342         uid_t uid;
 343         time_t create_time;
 344         time_t renew_until;
 345         time_t refresh_time;
 346         struct tevent_timer *event;
 347 };
 348
 349 #include "winbindd/winbindd_proto.h"
 350
 351 #define WINBINDD_ESTABLISH_LOOP 30
 352 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 353 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 354 #define DOM_SEQUENCE_NONE ((uint32_t)-1)
 355
 356 #endif /* _WINBINDD_H */