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
  32 /* Let the build environment override the public winbindd socket location. This
  33  * is needed for launchd support -- jpeach.
  34  */
  35 #ifndef WINBINDD_SOCKET_DIR
  36 #define WINBINDD_SOCKET_DIR  "/tmp/.winbindd"  /* Name of PF_UNIX dir */
  37 #endif
  38
  39 #define WINBINDD_PRIV_SOCKET_SUBDIR "winbindd_privileged" /* name of subdirectory of lp_lockdir() to hold the 'privileged' pipe */
  40 #define WINBINDD_DOMAIN_ENV  "WINBINDD_DOMAIN" /* Environment variables */
  41 #define WINBINDD_DONT_ENV    "_NO_WINBINDD"
  42
  43 /* Update this when you change the interface.  */
  44
  45 #define WINBIND_INTERFACE_VERSION 18
  46
  47 /* Have to deal with time_t being 4 or 8 bytes due to structure alignment.
  48    On a 64bit Linux box, we have to support a constant structure size
  49    between /lib/libnss_winbind.so.2 and /li64/libnss_winbind.so.2.
  50    The easiest way to do this is to always use 8byte values for time_t. */
  51
  52 #if defined(int64)
  53 #  define SMB_TIME_T int64
  54 #else
  55 #  define SMB_TIME_T time_t
  56 #endif
  57
  58 /* Socket commands */
  59
  60 enum winbindd_cmd {
  61
  62         WINBINDD_INTERFACE_VERSION,    /* Always a well known value */
  63
  64         /* Get users and groups */
  65
  66         WINBINDD_GETPWNAM,
  67         WINBINDD_GETPWUID,
  68         WINBINDD_GETGRNAM,
  69         WINBINDD_GETGRGID,
  70         WINBINDD_GETGROUPS,
  71
  72         /* Enumerate users and groups */
  73
  74         WINBINDD_SETPWENT,
  75         WINBINDD_ENDPWENT,
  76         WINBINDD_GETPWENT,
  77         WINBINDD_SETGRENT,
  78         WINBINDD_ENDGRENT,
  79         WINBINDD_GETGRENT,
  80
  81         /* PAM authenticate and password change */
  82
  83         WINBINDD_PAM_AUTH,
  84         WINBINDD_PAM_AUTH_CRAP,
  85         WINBINDD_PAM_CHAUTHTOK,
  86         WINBINDD_PAM_LOGOFF,
  87         WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP,
  88
  89         /* List various things */
  90
  91         WINBINDD_LIST_USERS,         /* List w/o rid->id mapping */
  92         WINBINDD_LIST_GROUPS,        /* Ditto */
  93         WINBINDD_LIST_TRUSTDOM,
  94
  95         /* SID conversion */
  96
  97         WINBINDD_LOOKUPSID,
  98         WINBINDD_LOOKUPNAME,
  99         WINBINDD_LOOKUPRIDS,
 100
 101         /* Lookup functions */
 102
 103         WINBINDD_SID_TO_UID,
 104         WINBINDD_SID_TO_GID,
 105         WINBINDD_SIDS_TO_XIDS,
 106         WINBINDD_UID_TO_SID,
 107         WINBINDD_GID_TO_SID,
 108
 109         WINBINDD_ALLOCATE_UID,
 110         WINBINDD_ALLOCATE_GID,
 111         WINBINDD_SET_MAPPING,
 112         WINBINDD_SET_HWM,
 113
 114         /* Miscellaneous other stuff */
 115
 116         WINBINDD_DUMP_MAPS,
 117
 118         WINBINDD_CHECK_MACHACC,     /* Check machine account pw works */
 119         WINBINDD_PING,              /* Just tell me winbind is running */
 120         WINBINDD_INFO,              /* Various bit of info.  Currently just tidbits */
 121         WINBINDD_DOMAIN_NAME,       /* The domain this winbind server is a member of (lp_workgroup()) */
 122
 123         WINBINDD_DOMAIN_INFO,   /* Most of what we know from
 124                                    struct winbindd_domain */
 125         WINBINDD_GETDCNAME,     /* Issue a GetDCName Request */
 126
 127         WINBINDD_SHOW_SEQUENCE, /* display sequence numbers of domains */
 128
 129         /* WINS commands */
 130
 131         WINBINDD_WINS_BYIP,
 132         WINBINDD_WINS_BYNAME,
 133
 134         /* this is like GETGRENT but gives an empty group list */
 135         WINBINDD_GETGRLST,
 136
 137         WINBINDD_NETBIOS_NAME,       /* The netbios name of the server */
 138
 139         /* find the location of our privileged pipe */
 140         WINBINDD_PRIV_PIPE_DIR,
 141
 142         /* return a list of group sids for a user sid */
 143         WINBINDD_GETUSERSIDS,
 144
 145         /* Various group queries */
 146         WINBINDD_GETUSERDOMGROUPS,
 147
 148         /* Initialize connection in a child */
 149         WINBINDD_INIT_CONNECTION,
 150
 151         /* Blocking calls that are not allowed on the main winbind pipe, only
 152          * between parent and children */
 153         WINBINDD_DUAL_SID2UID,
 154         WINBINDD_DUAL_SID2GID,
 155         WINBINDD_DUAL_SIDS2XIDS,
 156         WINBINDD_DUAL_UID2SID,
 157         WINBINDD_DUAL_GID2SID,
 158         WINBINDD_DUAL_SET_MAPPING,
 159         WINBINDD_DUAL_SET_HWM,
 160         WINBINDD_DUAL_DUMP_MAPS,
 161
 162         /* Wrapper around possibly blocking unix nss calls */
 163         WINBINDD_DUAL_UID2NAME,
 164         WINBINDD_DUAL_NAME2UID,
 165         WINBINDD_DUAL_GID2NAME,
 166         WINBINDD_DUAL_NAME2GID,
 167
 168         WINBINDD_DUAL_USERINFO,
 169         WINBINDD_DUAL_GETSIDALIASES,
 170
 171         /* Complete the challenge phase of the NTLM authentication
 172            protocol using cached password. */
 173         WINBINDD_CCACHE_NTLMAUTH,
 174
 175         WINBINDD_NUM_CMDS
 176 };
 177
 178 typedef struct winbindd_pw {
 179         fstring pw_name;
 180         fstring pw_passwd;
 181         uid_t pw_uid;
 182         gid_t pw_gid;
 183         fstring pw_gecos;
 184         fstring pw_dir;
 185         fstring pw_shell;
 186 } WINBINDD_PW;
 187
 188
 189 typedef struct winbindd_gr {
 190         fstring gr_name;
 191         fstring gr_passwd;
 192         gid_t gr_gid;
 193         uint32 num_gr_mem;
 194         uint32 gr_mem_ofs;   /* offset to group membership */
 195 } WINBINDD_GR;
 196
 197
 198 #define WBFLAG_PAM_INFO3_NDR            0x0001
 199 #define WBFLAG_PAM_INFO3_TEXT           0x0002
 200 #define WBFLAG_PAM_USER_SESSION_KEY     0x0004
 201 #define WBFLAG_PAM_LMKEY                0x0008
 202 #define WBFLAG_PAM_CONTACT_TRUSTDOM     0x0010
 203 #define WBFLAG_QUERY_ONLY               0x0020
 204 #define WBFLAG_PAM_UNIX_NAME            0x0080
 205 #define WBFLAG_PAM_AFS_TOKEN            0x0100
 206 #define WBFLAG_PAM_NT_STATUS_SQUASH     0x0200
 207
 208 /* This is a flag that can only be sent from parent to child */
 209 #define WBFLAG_IS_PRIVILEGED            0x0400
 210 /* Flag to say this is a winbindd internal send - don't recurse. */
 211 #define WBFLAG_RECURSE                  0x0800
 212
 213 #define WBFLAG_PAM_KRB5                 0x1000
 214 #define WBFLAG_PAM_FALLBACK_AFTER_KRB5  0x2000
 215 #define WBFLAG_PAM_CACHED_LOGIN         0x4000
 216 #define WBFLAG_PAM_GET_PWD_POLICY       0x8000  /* not used */
 217
 218 #define WINBINDD_MAX_EXTRA_DATA (128*1024)
 219
 220 /* Winbind request structure */
 221
 222 /*******************************************************************************
 223  * This structure MUST be the same size in the 32bit and 64bit builds
 224  * for compatibility between /lib64/libnss_winbind.so and /lib/libnss_winbind.so
 225  *
 226  * DO NOT CHANGE THIS STRUCTURE WITHOUT TESTING THE 32BIT NSS LIB AGAINST
 227  * A 64BIT WINBINDD    --jerry
 228  ******************************************************************************/
 229
 230 struct winbindd_request {
 231         uint32 length;
 232         enum winbindd_cmd cmd;   /* Winbindd command to execute */
 233         pid_t pid;               /* pid of calling process */
 234         uint32 flags;            /* flags relavant to a given request */
 235         fstring domain_name;    /* name of domain for which the request applies */
 236
 237         union {
 238                 fstring winsreq;     /* WINS request */
 239                 fstring username;    /* getpwnam */
 240                 fstring groupname;   /* getgrnam */
 241                 uid_t uid;           /* getpwuid, uid_to_sid */
 242                 gid_t gid;           /* getgrgid, gid_to_sid */
 243                 struct {
 244                         /* We deliberatedly don't split into domain/user to
 245                            avoid having the client know what the separator
 246                            character is. */
 247                         fstring user;
 248                         fstring pass;
 249                         pstring require_membership_of_sid;
 250                         fstring krb5_cc_type;
 251                         uid_t uid;
 252                 } auth;              /* pam_winbind auth module */
 253                 struct {
 254                         unsigned char chal[8];
 255                         uint32 logon_parameters;
 256                         fstring user;
 257                         fstring domain;
 258                         fstring lm_resp;
 259                         uint32 lm_resp_len;
 260                         fstring nt_resp;
 261                         uint32 nt_resp_len;
 262                         fstring workstation;
 263                         fstring require_membership_of_sid;
 264                 } auth_crap;
 265                 struct {
 266                     fstring user;
 267                     fstring oldpass;
 268                     fstring newpass;
 269                 } chauthtok;         /* pam_winbind passwd module */
 270                 struct {
 271                         fstring user;
 272                         fstring domain;
 273                         unsigned char new_nt_pswd[516];
 274                         uint16  new_nt_pswd_len;
 275                         unsigned char old_nt_hash_enc[16];
 276                         uint16  old_nt_hash_enc_len;
 277                         unsigned char new_lm_pswd[516];
 278                         uint16  new_lm_pswd_len;
 279                         unsigned char old_lm_hash_enc[16];
 280                         uint16  old_lm_hash_enc_len;
 281                 } chng_pswd_auth_crap;/* pam_winbind passwd module */
 282                 struct {
 283                         fstring user;
 284                         fstring krb5ccname;
 285                         uid_t uid;
 286                 } logoff;              /* pam_winbind session module */
 287                 fstring sid;         /* lookupsid, sid_to_[ug]id */
 288                 struct {
 289                         fstring dom_name;       /* lookupname */
 290                         fstring name;
 291                 } name;
 292                 uint32 num_entries;  /* getpwent, getgrent */
 293                 struct {
 294                         fstring username;
 295                         fstring groupname;
 296                 } acct_mgt;
 297                 struct {
 298                         BOOL is_primary;
 299                         fstring dcname;
 300                 } init_conn;
 301                 struct {
 302                         fstring sid;
 303                         fstring name;
 304                 } dual_sid2id;
 305                 struct {
 306                         fstring sid;
 307                         uint32 type;
 308                         uint32 id;
 309                 } dual_idmapset;
 310                 BOOL list_all_domains;
 311
 312                 struct {
 313                         uid_t uid;
 314                         fstring user;
 315                         /* the effective uid of the client, must be the uid for 'user'.
 316                            This is checked by the main daemon, trusted by children. */
 317                         /* if the blobs are length zero, then this doesn't
 318                            produce an actual challenge response. It merely
 319                            succeeds if there are cached credentials available
 320                            that could be used. */
 321                         uint32 initial_blob_len; /* blobs in extra_data */
 322                         uint32 challenge_blob_len;
 323                 } ccache_ntlm_auth;
 324
 325                 /* padding -- needed to fix alignment between 32bit and 64bit libs.
 326                    The size is the sizeof the union without the padding aligned on
 327                    an 8 byte boundary.   --jerry */
 328
 329                 char padding[1560];
 330         } data;
 331         union {
 332                 SMB_TIME_T padding;
 333                 char *data;
 334         } extra_data;
 335         uint32 extra_len;
 336         char null_term;
 337 };
 338
 339 /* Response values */
 340
 341 enum winbindd_result {
 342         WINBINDD_ERROR,
 343         WINBINDD_PENDING,
 344         WINBINDD_OK
 345 };
 346
 347 /* Winbind response structure */
 348
 349 /*******************************************************************************
 350  * This structure MUST be the same size in the 32bit and 64bit builds
 351  * for compatibility between /lib64/libnss_winbind.so and /lib/libnss_winbind.so
 352  *
 353  * DO NOT CHANGE THIS STRUCTURE WITHOUT TESTING THE 32BIT NSS LIB AGAINST
 354  * A 64BIT WINBINDD    --jerry
 355  ******************************************************************************/
 356
 357 struct winbindd_response {
 358
 359         /* Header information */
 360
 361         uint32 length;                        /* Length of response */
 362         enum winbindd_result result;          /* Result code */
 363
 364         /* Fixed length return data */
 365
 366         union {
 367                 int interface_version;  /* Try to ensure this is always in the same spot... */
 368
 369                 fstring winsresp;               /* WINS response */
 370
 371                 /* getpwnam, getpwuid */
 372
 373                 struct winbindd_pw pw;
 374
 375                 /* getgrnam, getgrgid */
 376
 377                 struct winbindd_gr gr;
 378
 379                 uint32 num_entries; /* getpwent, getgrent */
 380                 struct winbindd_sid {
 381                         fstring sid;        /* lookupname, [ug]id_to_sid */
 382                         int type;
 383                 } sid;
 384                 struct winbindd_name {
 385                         fstring dom_name;       /* lookupsid */
 386                         fstring name;
 387                         int type;
 388                 } name;
 389                 uid_t uid;          /* sid_to_uid */
 390                 gid_t gid;          /* sid_to_gid */
 391                 struct winbindd_info {
 392                         char winbind_separator;
 393                         fstring samba_version;
 394                 } info;
 395                 fstring domain_name;
 396                 fstring netbios_name;
 397                 fstring dc_name;
 398
 399                 struct auth_reply {
 400                         uint32 nt_status;
 401                         fstring nt_status_string;
 402                         fstring error_string;
 403                         int pam_error;
 404                         char user_session_key[16];
 405                         char first_8_lm_hash[8];
 406                         fstring krb5ccname;
 407                         uint32 reject_reason;
 408                         uint32 padding;
 409                         struct policy_settings {
 410                                 uint32 min_length_password;
 411                                 uint32 password_history;
 412                                 uint32 password_properties;
 413                                 uint32 padding;
 414                                 SMB_TIME_T expire;
 415                                 SMB_TIME_T min_passwordage;
 416                         } policy;
 417                         struct info3_text {
 418                                 SMB_TIME_T logon_time;
 419                                 SMB_TIME_T logoff_time;
 420                                 SMB_TIME_T kickoff_time;
 421                                 SMB_TIME_T pass_last_set_time;
 422                                 SMB_TIME_T pass_can_change_time;
 423                                 SMB_TIME_T pass_must_change_time;
 424                                 uint32 logon_count;
 425                                 uint32 bad_pw_count;
 426                                 uint32 user_rid;
 427                                 uint32 group_rid;
 428                                 uint32 num_groups;
 429                                 uint32 user_flgs;
 430                                 uint32 acct_flags;
 431                                 uint32 num_other_sids;
 432                                 fstring dom_sid;
 433                                 fstring user_name;
 434                                 fstring full_name;
 435                                 fstring logon_script;
 436                                 fstring profile_path;
 437                                 fstring home_dir;
 438                                 fstring dir_drive;
 439                                 fstring logon_srv;
 440                                 fstring logon_dom;
 441                         } info3;
 442                 } auth;
 443                 struct {
 444                         fstring name;
 445                         fstring alt_name;
 446                         fstring sid;
 447                         BOOL native_mode;
 448                         BOOL active_directory;
 449                         BOOL primary;
 450                         uint32 sequence_number;
 451                 } domain_info;
 452                 struct {
 453                         fstring acct_name;
 454                         fstring full_name;
 455                         fstring homedir;
 456                         fstring shell;
 457                         uint32 primary_gid;
 458                         uint32 group_rid;
 459                 } user_info;
 460                 struct {
 461                         uint32 auth_blob_len; /* blob in extra_data */
 462                 } ccache_ntlm_auth;
 463         } data;
 464
 465         /* Variable length return data */
 466
 467         union {
 468                 SMB_TIME_T padding;
 469                 void *data;
 470         } extra_data;
 471 };
 472
 473 struct WINBINDD_MEMORY_CREDS {
 474         struct WINBINDD_MEMORY_CREDS *next, *prev;
 475         const char *username; /* lookup key. */
 476         uid_t uid;
 477         int ref_count;
 478         size_t len;
 479         unsigned char *nt_hash; /* Base pointer for the following 2 */
 480         unsigned char *lm_hash;
 481         char *pass;
 482 };
 483
 484 struct WINBINDD_CCACHE_ENTRY {
 485         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 486         const char *principal_name;
 487         const char *ccname;
 488         const char *service;
 489         const char *username;
 490         const char *realm;
 491         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 492         int ref_count;
 493         uid_t uid;
 494         time_t create_time;
 495         time_t renew_until;
 496         time_t refresh_time;
 497         struct timed_event *event;
 498 };
 499
 500 #endif