source/nsswitch/winbindd_nss.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) Gerald Carter 2006
   8
   9    You are free to use this interface definition in any way you see
  10    fit, including without restriction, using this header in your own
  11    products. You do not need to give any attribution.
  12 */
  13
  14
  15 #ifndef CONST_DISCARD
  16 #define CONST_DISCARD(type, ptr)      ((type) ((void *) (ptr)))
  17 #endif
  18
  19 #ifndef CONST_ADD
  20 #define CONST_ADD(type, ptr)          ((type) ((const void *) (ptr)))
  21 #endif
  22
  23 #ifndef SAFE_FREE
  24 #define SAFE_FREE(x) do { if(x) {free(x); x=NULL;} } while(0)
  25 #endif
  26
  27 #ifndef _WINBINDD_NTDOM_H
  28 #define _WINBINDD_NTDOM_H
  29
  30 #define WINBINDD_SOCKET_NAME "pipe"            /* Name of PF_UNIX socket */
  31 #define WINBINDD_SOCKET_DIR  "/tmp/.winbindd"  /* Name of PF_UNIX dir */
  32 #define WINBINDD_PRIV_SOCKET_SUBDIR "winbindd_privileged" /* name of subdirectory of lp_lockdir() to hold the 'privileged' pipe */
  33 #define WINBINDD_DOMAIN_ENV  "WINBINDD_DOMAIN" /* Environment variables */
  34 #define WINBINDD_DONT_ENV    "_NO_WINBINDD"
  35
  36 /* Update this when you change the interface.  */
  37
  38 #define WINBIND_INTERFACE_VERSION 18
  39
  40 /* Have to deal with time_t being 4 or 8 bytes due to structure alignment.
  41    On a 64bit Linux box, we have to support a constant structure size
  42    between /lib/libnss_winbind.so.2 and /li64/libnss_winbind.so.2.
  43    The easiest way to do this is to always use 8byte values for time_t. */
  44
  45 #if defined(int64)
  46 #  define SMB_TIME_T int64
  47 #else
  48 #  define SMB_TIME_T time_t
  49 #endif
  50
  51 /* Socket commands */
  52
  53 enum winbindd_cmd {
  54
  55         WINBINDD_INTERFACE_VERSION,    /* Always a well known value */
  56
  57         /* Get users and groups */
  58
  59         WINBINDD_GETPWNAM,
  60         WINBINDD_GETPWUID,
  61         WINBINDD_GETGRNAM,
  62         WINBINDD_GETGRGID,
  63         WINBINDD_GETGROUPS,
  64
  65         /* Enumerate users and groups */
  66
  67         WINBINDD_SETPWENT,
  68         WINBINDD_ENDPWENT,
  69         WINBINDD_GETPWENT,
  70         WINBINDD_SETGRENT,
  71         WINBINDD_ENDGRENT,
  72         WINBINDD_GETGRENT,
  73
  74         /* PAM authenticate and password change */
  75
  76         WINBINDD_PAM_AUTH,
  77         WINBINDD_PAM_AUTH_CRAP,
  78         WINBINDD_PAM_CHAUTHTOK,
  79         WINBINDD_PAM_LOGOFF,
  80         WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP,
  81
  82         /* List various things */
  83
  84         WINBINDD_LIST_USERS,         /* List w/o rid->id mapping */
  85         WINBINDD_LIST_GROUPS,        /* Ditto */
  86         WINBINDD_LIST_TRUSTDOM,
  87
  88         /* SID conversion */
  89
  90         WINBINDD_LOOKUPSID,
  91         WINBINDD_LOOKUPNAME,
  92         WINBINDD_LOOKUPRIDS,
  93
  94         /* Lookup functions */
  95
  96         WINBINDD_SID_TO_UID,
  97         WINBINDD_SID_TO_GID,
  98         WINBINDD_SIDS_TO_XIDS,
  99         WINBINDD_UID_TO_SID,
 100         WINBINDD_GID_TO_SID,
 101
 102         WINBINDD_ALLOCATE_UID,
 103         WINBINDD_ALLOCATE_GID,
 104         WINBINDD_SET_MAPPING,
 105         WINBINDD_SET_HWM,
 106
 107         /* Miscellaneous other stuff */
 108
 109         WINBINDD_DUMP_MAPS,
 110
 111         WINBINDD_CHECK_MACHACC,     /* Check machine account pw works */
 112         WINBINDD_PING,              /* Just tell me winbind is running */
 113         WINBINDD_INFO,              /* Various bit of info.  Currently just tidbits */
 114         WINBINDD_DOMAIN_NAME,       /* The domain this winbind server is a member of (lp_workgroup()) */
 115
 116         WINBINDD_DOMAIN_INFO,   /* Most of what we know from
 117                                    struct winbindd_domain */
 118         WINBINDD_GETDCNAME,     /* Issue a GetDCName Request */
 119
 120         WINBINDD_SHOW_SEQUENCE, /* display sequence numbers of domains */
 121
 122         /* WINS commands */
 123
 124         WINBINDD_WINS_BYIP,
 125         WINBINDD_WINS_BYNAME,
 126
 127         /* this is like GETGRENT but gives an empty group list */
 128         WINBINDD_GETGRLST,
 129
 130         WINBINDD_NETBIOS_NAME,       /* The netbios name of the server */
 131
 132         /* find the location of our privileged pipe */
 133         WINBINDD_PRIV_PIPE_DIR,
 134
 135         /* return a list of group sids for a user sid */
 136         WINBINDD_GETUSERSIDS,
 137
 138         /* Various group queries */
 139         WINBINDD_GETUSERDOMGROUPS,
 140
 141         /* Initialize connection in a child */
 142         WINBINDD_INIT_CONNECTION,
 143
 144         /* Blocking calls that are not allowed on the main winbind pipe, only
 145          * between parent and children */
 146         WINBINDD_DUAL_SID2UID,
 147         WINBINDD_DUAL_SID2GID,
 148         WINBINDD_DUAL_SIDS2XIDS,
 149         WINBINDD_DUAL_UID2SID,
 150         WINBINDD_DUAL_GID2SID,
 151         WINBINDD_DUAL_SET_MAPPING,
 152         WINBINDD_DUAL_SET_HWM,
 153         WINBINDD_DUAL_DUMP_MAPS,
 154
 155         /* Wrapper around possibly blocking unix nss calls */
 156         WINBINDD_DUAL_UID2NAME,
 157         WINBINDD_DUAL_NAME2UID,
 158         WINBINDD_DUAL_GID2NAME,
 159         WINBINDD_DUAL_NAME2GID,
 160
 161         WINBINDD_DUAL_USERINFO,
 162         WINBINDD_DUAL_GETSIDALIASES,
 163
 164         /* Complete the challenge phase of the NTLM authentication
 165            protocol using cached password. */
 166         WINBINDD_CCACHE_NTLMAUTH,
 167
 168         WINBINDD_NUM_CMDS
 169 };
 170
 171 typedef struct winbindd_pw {
 172         fstring pw_name;
 173         fstring pw_passwd;
 174         uid_t pw_uid;
 175         gid_t pw_gid;
 176         fstring pw_gecos;
 177         fstring pw_dir;
 178         fstring pw_shell;
 179 } WINBINDD_PW;
 180
 181
 182 typedef struct winbindd_gr {
 183         fstring gr_name;
 184         fstring gr_passwd;
 185         gid_t gr_gid;
 186         uint32 num_gr_mem;
 187         uint32 gr_mem_ofs;   /* offset to group membership */
 188 } WINBINDD_GR;
 189
 190
 191 #define WBFLAG_PAM_INFO3_NDR            0x0001
 192 #define WBFLAG_PAM_INFO3_TEXT           0x0002
 193 #define WBFLAG_PAM_USER_SESSION_KEY     0x0004
 194 #define WBFLAG_PAM_LMKEY                0x0008
 195 #define WBFLAG_PAM_CONTACT_TRUSTDOM     0x0010
 196 #define WBFLAG_QUERY_ONLY               0x0020
 197 #define WBFLAG_PAM_UNIX_NAME            0x0080
 198 #define WBFLAG_PAM_AFS_TOKEN            0x0100
 199 #define WBFLAG_PAM_NT_STATUS_SQUASH     0x0200
 200
 201 /* This is a flag that can only be sent from parent to child */
 202 #define WBFLAG_IS_PRIVILEGED            0x0400
 203 /* Flag to say this is a winbindd internal send - don't recurse. */
 204 #define WBFLAG_RECURSE                  0x0800
 205
 206 #define WBFLAG_PAM_KRB5                 0x1000
 207 #define WBFLAG_PAM_FALLBACK_AFTER_KRB5  0x2000
 208 #define WBFLAG_PAM_CACHED_LOGIN         0x4000
 209 #define WBFLAG_PAM_GET_PWD_POLICY       0x8000  /* not used */
 210
 211 #define WINBINDD_MAX_EXTRA_DATA (128*1024)
 212
 213 /* Winbind request structure */
 214
 215 /*******************************************************************************
 216  * This structure MUST be the same size in the 32bit and 64bit builds
 217  * for compatibility between /lib64/libnss_winbind.so and /lib/libnss_winbind.so
 218  *
 219  * DO NOT CHANGE THIS STRUCTURE WITHOUT TESTING THE 32BIT NSS LIB AGAINST
 220  * A 64BIT WINBINDD    --jerry
 221  ******************************************************************************/
 222
 223 struct winbindd_request {
 224         uint32 length;
 225         enum winbindd_cmd cmd;   /* Winbindd command to execute */
 226         pid_t pid;               /* pid of calling process */
 227         uint32 flags;            /* flags relavant to a given request */
 228         fstring domain_name;    /* name of domain for which the request applies */
 229
 230         union {
 231                 fstring winsreq;     /* WINS request */
 232                 fstring username;    /* getpwnam */
 233                 fstring groupname;   /* getgrnam */
 234                 uid_t uid;           /* getpwuid, uid_to_sid */
 235                 gid_t gid;           /* getgrgid, gid_to_sid */
 236                 struct {
 237                         /* We deliberatedly don't split into domain/user to
 238                            avoid having the client know what the separator
 239                            character is. */
 240                         fstring user;
 241                         fstring pass;
 242                         fstring require_membership_of_sid;
 243                         fstring krb5_cc_type;
 244                         uid_t uid;
 245                 } auth;              /* pam_winbind auth module */
 246                 struct {
 247                         unsigned char chal[8];
 248                         uint32 logon_parameters;
 249                         fstring user;
 250                         fstring domain;
 251                         fstring lm_resp;
 252                         uint32 lm_resp_len;
 253                         fstring nt_resp;
 254                         uint32 nt_resp_len;
 255                         fstring workstation;
 256                         fstring require_membership_of_sid;
 257                 } auth_crap;
 258                 struct {
 259                     fstring user;
 260                     fstring oldpass;
 261                     fstring newpass;
 262                 } chauthtok;         /* pam_winbind passwd module */
 263                 struct {
 264                         fstring user;
 265                         fstring domain;
 266                         unsigned char new_nt_pswd[516];
 267                         uint16  new_nt_pswd_len;
 268                         unsigned char old_nt_hash_enc[16];
 269                         uint16  old_nt_hash_enc_len;
 270                         unsigned char new_lm_pswd[516];
 271                         uint16  new_lm_pswd_len;
 272                         unsigned char old_lm_hash_enc[16];
 273                         uint16  old_lm_hash_enc_len;
 274                 } chng_pswd_auth_crap;/* pam_winbind passwd module */
 275                 struct {
 276                         fstring user;
 277                         fstring krb5ccname;
 278                         uid_t uid;
 279                 } logoff;              /* pam_winbind session module */
 280                 fstring sid;         /* lookupsid, sid_to_[ug]id */
 281                 struct {
 282                         fstring dom_name;       /* lookupname */
 283                         fstring name;
 284                 } name;
 285                 uint32 num_entries;  /* getpwent, getgrent */
 286                 struct {
 287                         fstring username;
 288                         fstring groupname;
 289                 } acct_mgt;
 290                 struct {
 291                         BOOL is_primary;
 292                         fstring dcname;
 293                 } init_conn;
 294                 struct {
 295                         fstring sid;
 296                         fstring name;
 297                 } dual_sid2id;
 298                 struct {
 299                         fstring sid;
 300                         uint32 type;
 301                         uint32 id;
 302                 } dual_idmapset;
 303                 BOOL list_all_domains;
 304
 305                 struct {
 306                         uid_t uid;
 307                         fstring user;
 308                         /* the effective uid of the client, must be the uid for 'user'.
 309                            This is checked by the main daemon, trusted by children. */
 310                         /* if the blobs are length zero, then this doesn't
 311                            produce an actual challenge response. It merely
 312                            succeeds if there are cached credentials available
 313                            that could be used. */
 314                         uint32 initial_blob_len; /* blobs in extra_data */
 315                         uint32 challenge_blob_len;
 316                 } ccache_ntlm_auth;
 317
 318                 /* padding -- needed to fix alignment between 32bit and 64bit libs.
 319                    The size is the sizeof the union without the padding aligned on
 320                    an 8 byte boundary.   --jerry */
 321
 322                 char padding[1560];
 323         } data;
 324         union {
 325                 SMB_TIME_T padding;
 326                 char *data;
 327         } extra_data;
 328         uint32 extra_len;
 329         char null_term;
 330 };
 331
 332 /* Response values */
 333
 334 enum winbindd_result {
 335         WINBINDD_ERROR,
 336         WINBINDD_PENDING,
 337         WINBINDD_OK
 338 };
 339
 340 /* Winbind response structure */
 341
 342 /*******************************************************************************
 343  * This structure MUST be the same size in the 32bit and 64bit builds
 344  * for compatibility between /lib64/libnss_winbind.so and /lib/libnss_winbind.so
 345  *
 346  * DO NOT CHANGE THIS STRUCTURE WITHOUT TESTING THE 32BIT NSS LIB AGAINST
 347  * A 64BIT WINBINDD    --jerry
 348  ******************************************************************************/
 349
 350 struct winbindd_response {
 351
 352         /* Header information */
 353
 354         uint32 length;                        /* Length of response */
 355         enum winbindd_result result;          /* Result code */
 356
 357         /* Fixed length return data */
 358
 359         union {
 360                 int interface_version;  /* Try to ensure this is always in the same spot... */
 361
 362                 fstring winsresp;               /* WINS response */
 363
 364                 /* getpwnam, getpwuid */
 365
 366                 struct winbindd_pw pw;
 367
 368                 /* getgrnam, getgrgid */
 369
 370                 struct winbindd_gr gr;
 371
 372                 uint32 num_entries; /* getpwent, getgrent */
 373                 struct winbindd_sid {
 374                         fstring sid;        /* lookupname, [ug]id_to_sid */
 375                         int type;
 376                 } sid;
 377                 struct winbindd_name {
 378                         fstring dom_name;       /* lookupsid */
 379                         fstring name;
 380                         int type;
 381                 } name;
 382                 uid_t uid;          /* sid_to_uid */
 383                 gid_t gid;          /* sid_to_gid */
 384                 struct winbindd_info {
 385                         char winbind_separator;
 386                         fstring samba_version;
 387                 } info;
 388                 fstring domain_name;
 389                 fstring netbios_name;
 390                 fstring dc_name;
 391
 392                 struct auth_reply {
 393                         uint32 nt_status;
 394                         fstring nt_status_string;
 395                         fstring error_string;
 396                         int pam_error;
 397                         char user_session_key[16];
 398                         char first_8_lm_hash[8];
 399                         fstring krb5ccname;
 400                         uint32 reject_reason;
 401                         uint32 padding;
 402                         struct policy_settings {
 403                                 uint32 min_length_password;
 404                                 uint32 password_history;
 405                                 uint32 password_properties;
 406                                 uint32 padding;
 407                                 SMB_TIME_T expire;
 408                                 SMB_TIME_T min_passwordage;
 409                         } policy;
 410                         struct info3_text {
 411                                 SMB_TIME_T logon_time;
 412                                 SMB_TIME_T logoff_time;
 413                                 SMB_TIME_T kickoff_time;
 414                                 SMB_TIME_T pass_last_set_time;
 415                                 SMB_TIME_T pass_can_change_time;
 416                                 SMB_TIME_T pass_must_change_time;
 417                                 uint32 logon_count;
 418                                 uint32 bad_pw_count;
 419                                 uint32 user_rid;
 420                                 uint32 group_rid;
 421                                 uint32 num_groups;
 422                                 uint32 user_flgs;
 423                                 uint32 acct_flags;
 424                                 uint32 num_other_sids;
 425                                 fstring dom_sid;
 426                                 fstring user_name;
 427                                 fstring full_name;
 428                                 fstring logon_script;
 429                                 fstring profile_path;
 430                                 fstring home_dir;
 431                                 fstring dir_drive;
 432                                 fstring logon_srv;
 433                                 fstring logon_dom;
 434                         } info3;
 435                 } auth;
 436                 struct {
 437                         fstring name;
 438                         fstring alt_name;
 439                         fstring sid;
 440                         BOOL native_mode;
 441                         BOOL active_directory;
 442                         BOOL primary;
 443                         uint32 sequence_number;
 444                 } domain_info;
 445                 struct {
 446                         fstring acct_name;
 447                         fstring full_name;
 448                         fstring homedir;
 449                         fstring shell;
 450                         uint32 group_rid;
 451                 } user_info;
 452                 struct {
 453                         uint32 auth_blob_len; /* blob in extra_data */
 454                 } ccache_ntlm_auth;
 455         } data;
 456
 457         /* Variable length return data */
 458
 459         union {
 460                 SMB_TIME_T padding;
 461                 void *data;
 462         } extra_data;
 463 };
 464
 465 struct WINBINDD_MEMORY_CREDS {
 466         struct WINBINDD_MEMORY_CREDS *next, *prev;
 467         const char *username; /* lookup key. */
 468         uid_t uid;
 469         int ref_count;
 470         size_t len;
 471         unsigned char *nt_hash; /* Base pointer for the following 2 */
 472         unsigned char *lm_hash;
 473         char *pass;
 474 };
 475
 476 struct WINBINDD_CCACHE_ENTRY {
 477         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 478         const char *principal_name;
 479         const char *ccname;
 480         const char *service;
 481         const char *username;
 482         const char *realm;
 483         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 484         int ref_count;
 485         uid_t uid;
 486         time_t create_time;
 487         time_t renew_until;
 488         BOOL refresh_tgt;
 489         time_t refresh_time;
 490         struct timed_event *event;
 491 };
 492
 493 #endif