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 winbind_internal_pipes;
  47 struct ads_struct;
  48
  49 struct winbindd_cli_state {
  50         struct winbindd_cli_state *prev, *next;   /* Linked list pointers */
  51         int sock;                                 /* Open socket from client */
  52         pid_t pid;                                /* pid of client */
  53         char client_name[32];                     /* The process name of the client */
  54         time_t last_access;                       /* Time of last access (read or write) */
  55         bool privileged;                           /* Is the client 'privileged' */
  56
  57         TALLOC_CTX *mem_ctx;                      /* memory per request */
  58         const char *cmd_name;
  59         NTSTATUS (*recv_fn)(struct tevent_req *req,
  60                             struct winbindd_response *presp);
  61         struct winbindd_request *request;         /* Request from client */
  62         struct tevent_queue *out_queue;
  63         struct winbindd_response *response;        /* Response to client */
  64         struct tevent_req *io_req; /* wb_req_read_* or wb_resp_write_* */
  65
  66         struct getpwent_state *pwent_state; /* State for getpwent() */
  67         struct getgrent_state *grent_state; /* State for getgrent() */
  68 };
  69
  70 struct getpwent_state {
  71         struct winbindd_domain *domain;
  72         uint32_t next_user;
  73         struct wbint_RidArray rids;
  74 };
  75
  76 struct getgrent_state {
  77         struct winbindd_domain *domain;
  78         uint32_t next_group;
  79         uint32_t num_groups;
  80         struct wbint_Principal *groups;
  81 };
  82
  83 /* Our connection to the DC */
  84
  85 struct winbindd_cm_conn {
  86         struct cli_state *cli;
  87
  88         enum dcerpc_AuthLevel auth_level;
  89
  90         struct rpc_pipe_client *samr_pipe;
  91         struct policy_handle sam_connect_handle, sam_domain_handle;
  92
  93         struct rpc_pipe_client *lsa_pipe;
  94         struct rpc_pipe_client *lsa_pipe_tcp;
  95         struct policy_handle lsa_policy;
  96
  97         struct rpc_pipe_client *netlogon_pipe;
  98         struct netlogon_creds_cli_context *netlogon_creds_ctx;
  99         bool netlogon_force_reauth;
 100 };
 101
 102 /* Async child */
 103
 104 struct winbindd_domain;
 105
 106 struct winbindd_child {
 107         pid_t pid;
 108         struct winbindd_domain *domain;
 109         char *logfilename;
 110
 111         int sock;
 112         struct tevent_fd *monitor_fde; /* Watch for dead children/sockets */
 113         struct tevent_queue *queue;
 114         struct dcerpc_binding_handle *binding_handle;
 115
 116         struct tevent_timer *lockout_policy_event;
 117         struct tevent_timer *machine_password_change_event;
 118 };
 119
 120 /* Structures to hold per domain information */
 121
 122 struct winbindd_domain {
 123         char *name;                            /* Domain name (NetBIOS) */
 124         char *alt_name;                        /* alt Domain name, if any (FQDN for ADS) */
 125         char *forest_name;                     /* Name of the AD forest we're in */
 126         struct dom_sid sid;                           /* SID for this domain */
 127         enum netr_SchannelType secure_channel_type;
 128         uint32_t domain_flags;                   /* Domain flags from netlogon.h */
 129         uint32_t domain_type;                    /* Domain type from netlogon.h */
 130         uint32_t domain_trust_attribs;           /* Trust attribs from netlogon.h */
 131         struct winbindd_domain *routing_domain;
 132         bool initialized;                      /* Did we already ask for the domain mode? */
 133         bool active_directory;                 /* is this a win2k active directory ? */
 134         bool primary;                          /* is this our primary domain ? */
 135         bool internal;                         /* BUILTIN and member SAM */
 136         bool rodc;                             /* Are we an RODC for this AD domain? (do some operations locally) */
 137         bool online;                           /* is this domain available ? */
 138         time_t startup_time;                   /* When we set "startup" true. monotonic clock */
 139         bool startup;                          /* are we in the first 30 seconds after startup_time ? */
 140
 141         bool can_do_ncacn_ip_tcp;
 142
 143         /*
 144          * Lookup methods for this domain (LDAP or RPC). The backend
 145          * methods are used by the cache layer.
 146          */
 147         struct winbindd_methods *backend;
 148
 149         struct {
 150                 struct winbind_internal_pipes *samr_pipes;
 151                 struct ads_struct *ads_conn;
 152         } backend_data;
 153
 154         /* A working DC */
 155         bool force_dc;
 156         char *dcname;
 157         const char *ping_dcname;
 158         struct sockaddr_storage dcaddr;
 159
 160         /* Sequence number stuff */
 161
 162         time_t last_seq_check;
 163         uint32_t sequence_number;
 164         NTSTATUS last_status;
 165
 166         /* The smb connection */
 167
 168         struct winbindd_cm_conn conn;
 169
 170         /* The child pid we're talking to */
 171
 172         struct winbindd_child *children;
 173
 174         struct tevent_queue *queue;
 175         struct dcerpc_binding_handle *binding_handle;
 176
 177         struct tevent_req *check_online_event;
 178
 179         /* Linked list info */
 180
 181         struct winbindd_domain *prev, *next;
 182 };
 183
 184 struct wb_parent_idmap_config_dom {
 185         unsigned low_id;
 186         unsigned high_id;
 187         const char *name;
 188         struct dom_sid sid;
 189 };
 190
 191 struct wb_parent_idmap_config {
 192         struct tevent_queue *queue;
 193         uint32_t num_doms;
 194         bool initialized;
 195         struct wb_parent_idmap_config_dom *doms;
 196 };
 197
 198 struct wb_acct_info {
 199         const char *acct_name; /* account name */
 200         const char *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                                 const char **pdom_name,
 235                                 struct dom_sid *sid,
 236                                 enum lsa_SidType *type);
 237
 238         /* convert a sid to a user or group name */
 239         NTSTATUS (*sid_to_name)(struct winbindd_domain *domain,
 240                                 TALLOC_CTX *mem_ctx,
 241                                 const struct dom_sid *sid,
 242                                 char **domain_name,
 243                                 char **name,
 244                                 enum lsa_SidType *type);
 245
 246         NTSTATUS (*rids_to_names)(struct winbindd_domain *domain,
 247                                   TALLOC_CTX *mem_ctx,
 248                                   const struct dom_sid *domain_sid,
 249                                   uint32_t *rids,
 250                                   size_t num_rids,
 251                                   char **domain_name,
 252                                   char ***names,
 253                                   enum lsa_SidType **types);
 254
 255         /* lookup all groups that a user is a member of. The backend
 256            can also choose to lookup by username or rid for this
 257            function */
 258         NTSTATUS (*lookup_usergroups)(struct winbindd_domain *domain,
 259                                       TALLOC_CTX *mem_ctx,
 260                                       const struct dom_sid *user_sid,
 261                                       uint32_t *num_groups, struct dom_sid **user_gids);
 262
 263         /* Lookup all aliases that the sids delivered are member of. This is
 264          * to implement 'domain local groups' correctly */
 265         NTSTATUS (*lookup_useraliases)(struct winbindd_domain *domain,
 266                                        TALLOC_CTX *mem_ctx,
 267                                        uint32_t num_sids,
 268                                        const struct dom_sid *sids,
 269                                        uint32_t *num_aliases,
 270                                        uint32_t **alias_rids);
 271
 272         /* find all members of the group with the specified group_rid */
 273         NTSTATUS (*lookup_groupmem)(struct winbindd_domain *domain,
 274                                     TALLOC_CTX *mem_ctx,
 275                                     const struct dom_sid *group_sid,
 276                                     enum lsa_SidType type,
 277                                     uint32_t *num_names,
 278                                     struct dom_sid **sid_mem, char ***names,
 279                                     uint32_t **name_types);
 280
 281         /* find all members of the alias with the specified alias_sid */
 282         NTSTATUS (*lookup_aliasmem)(struct winbindd_domain *domain,
 283                                     TALLOC_CTX *mem_ctx,
 284                                     const struct dom_sid *alias_sid,
 285                                     enum lsa_SidType type,
 286                                     uint32_t *num_sids,
 287                                     struct dom_sid **sid_mem);
 288
 289         /* return the lockout policy */
 290         NTSTATUS (*lockout_policy)(struct winbindd_domain *domain,
 291                                    TALLOC_CTX *mem_ctx,
 292                                    struct samr_DomInfo12 *lockout_policy);
 293
 294         /* return the lockout policy */
 295         NTSTATUS (*password_policy)(struct winbindd_domain *domain,
 296                                     TALLOC_CTX *mem_ctx,
 297                                     struct samr_DomInfo1 *password_policy);
 298
 299         /* enumerate trusted domains */
 300         NTSTATUS (*trusted_domains)(struct winbindd_domain *domain,
 301                                     TALLOC_CTX *mem_ctx,
 302                                     struct netr_DomainTrustList *trusts);
 303 };
 304
 305 /* Filled out by IDMAP backends */
 306 struct winbindd_idmap_methods {
 307   /* Called when backend is first loaded */
 308   bool (*init)(void);
 309
 310   bool (*get_sid_from_uid)(uid_t uid, struct dom_sid *sid);
 311   bool (*get_sid_from_gid)(gid_t gid, struct dom_sid *sid);
 312
 313   bool (*get_uid_from_sid)(struct dom_sid *sid, uid_t *uid);
 314   bool (*get_gid_from_sid)(struct dom_sid *sid, gid_t *gid);
 315
 316   /* Called when backend is unloaded */
 317   bool (*close)(void);
 318   /* Called to dump backend status */
 319   void (*status)(void);
 320 };
 321
 322 /* Data structures for dealing with the trusted domain cache */
 323
 324 struct winbindd_tdc_domain {
 325         const char *domain_name;
 326         const char *dns_name;
 327         struct dom_sid sid;
 328         uint32_t trust_flags;
 329         uint32_t trust_attribs;
 330         uint32_t trust_type;
 331 };
 332
 333 struct WINBINDD_MEMORY_CREDS {
 334         struct WINBINDD_MEMORY_CREDS *next, *prev;
 335         const char *username; /* lookup key. */
 336         uid_t uid;
 337         int ref_count;
 338         size_t len;
 339         uint8_t *nt_hash; /* Base pointer for the following 2 */
 340         uint8_t *lm_hash;
 341         char *pass;
 342 };
 343
 344 struct WINBINDD_CCACHE_ENTRY {
 345         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 346         const char *principal_name;
 347         const char *ccname;
 348         const char *service;
 349         const char *username;
 350         const char *realm;
 351         const char *canon_principal;
 352         const char *canon_realm;
 353         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 354         int ref_count;
 355         uid_t uid;
 356         time_t create_time;
 357         time_t renew_until;
 358         time_t refresh_time;
 359         struct tevent_timer *event;
 360 };
 361
 362 #include "winbindd/winbindd_proto.h"
 363
 364 #define WINBINDD_ESTABLISH_LOOP 30
 365 #define WINBINDD_RESCAN_FREQ lp_winbind_cache_time()
 366 #define WINBINDD_PAM_AUTH_KRB5_RENEW_TIME 2592000 /* one month */
 367 #define DOM_SEQUENCE_NONE ((uint32_t)-1)
 368
 369 #endif /* _WINBINDD_H */