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            0x00000001
 192 #define WBFLAG_PAM_INFO3_TEXT           0x00000002
 193 #define WBFLAG_PAM_USER_SESSION_KEY     0x00000004
 194 #define WBFLAG_PAM_LMKEY                0x00000008
 195 #define WBFLAG_PAM_CONTACT_TRUSTDOM     0x00000010
 196 #define WBFLAG_QUERY_ONLY               0x00000020
 197 #define WBFLAG_PAM_UNIX_NAME            0x00000080
 198 #define WBFLAG_PAM_AFS_TOKEN            0x00000100
 199 #define WBFLAG_PAM_NT_STATUS_SQUASH     0x00000200
 200
 201 /* This is a flag that can only be sent from parent to child */
 202 #define WBFLAG_IS_PRIVILEGED            0x00000400
 203 /* Flag to say this is a winbindd internal send - don't recurse. */
 204 #define WBFLAG_RECURSE                  0x00000800
 205
 206 #define WBFLAG_PAM_KRB5                 0x00001000
 207 #define WBFLAG_PAM_FALLBACK_AFTER_KRB5  0x00002000
 208 #define WBFLAG_PAM_CACHED_LOGIN         0x00004000
 209 #define WBFLAG_PAM_GET_PWD_POLICY       0x00008000
 210 #define WBFLAG_BIG_NTLMV2_BLOB          0x00010000
 211
 212 #define WINBINDD_MAX_EXTRA_DATA (128*1024)
 213
 214 /* Winbind request structure */
 215
 216 /*******************************************************************************
 217  * This structure MUST be the same size in the 32bit and 64bit builds
 218  * for compatibility between /lib64/libnss_winbind.so and /lib/libnss_winbind.so
 219  *
 220  * DO NOT CHANGE THIS STRUCTURE WITHOUT TESTING THE 32BIT NSS LIB AGAINST
 221  * A 64BIT WINBINDD    --jerry
 222  ******************************************************************************/
 223
 224 struct winbindd_request {
 225         uint32 length;
 226         enum winbindd_cmd cmd;   /* Winbindd command to execute */
 227         pid_t pid;               /* pid of calling process */
 228         uint32 flags;            /* flags relavant to a given request */
 229         fstring domain_name;    /* name of domain for which the request applies */
 230
 231         union {
 232                 fstring winsreq;     /* WINS request */
 233                 fstring username;    /* getpwnam */
 234                 fstring groupname;   /* getgrnam */
 235                 uid_t uid;           /* getpwuid, uid_to_sid */
 236                 gid_t gid;           /* getgrgid, gid_to_sid */
 237                 struct {
 238                         /* We deliberatedly don't split into domain/user to
 239                            avoid having the client know what the separator
 240                            character is. */
 241                         fstring user;
 242                         fstring pass;
 243                         pstring require_membership_of_sid;
 244                         fstring krb5_cc_type;
 245                         uid_t uid;
 246                 } auth;              /* pam_winbind auth module */
 247                 struct {
 248                         unsigned char chal[8];
 249                         uint32 logon_parameters;
 250                         fstring user;
 251                         fstring domain;
 252                         fstring lm_resp;
 253                         uint32 lm_resp_len;
 254                         fstring nt_resp;
 255                         uint32 nt_resp_len;
 256                         fstring workstation;
 257                         fstring require_membership_of_sid;
 258                 } auth_crap;
 259                 struct {
 260                     fstring user;
 261                     fstring oldpass;
 262                     fstring newpass;
 263                 } chauthtok;         /* pam_winbind passwd module */
 264                 struct {
 265                         fstring user;
 266                         fstring domain;
 267                         unsigned char new_nt_pswd[516];
 268                         uint16  new_nt_pswd_len;
 269                         unsigned char old_nt_hash_enc[16];
 270                         uint16  old_nt_hash_enc_len;
 271                         unsigned char new_lm_pswd[516];
 272                         uint16  new_lm_pswd_len;
 273                         unsigned char old_lm_hash_enc[16];
 274                         uint16  old_lm_hash_enc_len;
 275                 } chng_pswd_auth_crap;/* pam_winbind passwd module */
 276                 struct {
 277                         fstring user;
 278                         fstring krb5ccname;
 279                         uid_t uid;
 280                 } logoff;              /* pam_winbind session module */
 281                 fstring sid;         /* lookupsid, sid_to_[ug]id */
 282                 struct {
 283                         fstring dom_name;       /* lookupname */
 284                         fstring name;
 285                 } name;
 286                 uint32 num_entries;  /* getpwent, getgrent */
 287                 struct {
 288                         fstring username;
 289                         fstring groupname;
 290                 } acct_mgt;
 291                 struct {
 292                         BOOL is_primary;
 293                         fstring dcname;
 294                 } init_conn;
 295                 struct {
 296                         fstring sid;
 297                         fstring name;
 298                 } dual_sid2id;
 299                 struct {
 300                         fstring sid;
 301                         uint32 type;
 302                         uint32 id;
 303                 } dual_idmapset;
 304                 BOOL list_all_domains;
 305
 306                 struct {
 307                         uid_t uid;
 308                         fstring user;
 309                         /* the effective uid of the client, must be the uid for 'user'.
 310                            This is checked by the main daemon, trusted by children. */
 311                         /* if the blobs are length zero, then this doesn't
 312                            produce an actual challenge response. It merely
 313                            succeeds if there are cached credentials available
 314                            that could be used. */
 315                         uint32 initial_blob_len; /* blobs in extra_data */
 316                         uint32 challenge_blob_len;
 317                 } ccache_ntlm_auth;
 318
 319                 /* padding -- needed to fix alignment between 32bit and 64bit libs.
 320                    The size is the sizeof the union without the padding aligned on
 321                    an 8 byte boundary.   --jerry */
 322
 323                 char padding[1800];
 324         } data;
 325         union {
 326                 SMB_TIME_T padding;
 327                 char *data;
 328         } extra_data;
 329         uint32 extra_len;
 330         char null_term;
 331 };
 332
 333 /* Response values */
 334
 335 enum winbindd_result {
 336         WINBINDD_ERROR,
 337         WINBINDD_PENDING,
 338         WINBINDD_OK
 339 };
 340
 341 /* Winbind response structure */
 342
 343 /*******************************************************************************
 344  * This structure MUST be the same size in the 32bit and 64bit builds
 345  * for compatibility between /lib64/libnss_winbind.so and /lib/libnss_winbind.so
 346  *
 347  * DO NOT CHANGE THIS STRUCTURE WITHOUT TESTING THE 32BIT NSS LIB AGAINST
 348  * A 64BIT WINBINDD    --jerry
 349  ******************************************************************************/
 350
 351 struct winbindd_response {
 352
 353         /* Header information */
 354
 355         uint32 length;                        /* Length of response */
 356         enum winbindd_result result;          /* Result code */
 357
 358         /* Fixed length return data */
 359
 360         union {
 361                 int interface_version;  /* Try to ensure this is always in the same spot... */
 362
 363                 fstring winsresp;               /* WINS response */
 364
 365                 /* getpwnam, getpwuid */
 366
 367                 struct winbindd_pw pw;
 368
 369                 /* getgrnam, getgrgid */
 370
 371                 struct winbindd_gr gr;
 372
 373                 uint32 num_entries; /* getpwent, getgrent */
 374                 struct winbindd_sid {
 375                         fstring sid;        /* lookupname, [ug]id_to_sid */
 376                         int type;
 377                 } sid;
 378                 struct winbindd_name {
 379                         fstring dom_name;       /* lookupsid */
 380                         fstring name;
 381                         int type;
 382                 } name;
 383                 uid_t uid;          /* sid_to_uid */
 384                 gid_t gid;          /* sid_to_gid */
 385                 struct winbindd_info {
 386                         char winbind_separator;
 387                         fstring samba_version;
 388                 } info;
 389                 fstring domain_name;
 390                 fstring netbios_name;
 391                 fstring dc_name;
 392
 393                 struct auth_reply {
 394                         uint32 nt_status;
 395                         fstring nt_status_string;
 396                         fstring error_string;
 397                         int pam_error;
 398                         char user_session_key[16];
 399                         char first_8_lm_hash[8];
 400                         fstring krb5ccname;
 401                         uint32 reject_reason;
 402                         uint32 padding;
 403                         struct policy_settings {
 404                                 uint32 min_length_password;
 405                                 uint32 password_history;
 406                                 uint32 password_properties;
 407                                 uint32 padding;
 408                                 SMB_TIME_T expire;
 409                                 SMB_TIME_T min_passwordage;
 410                         } policy;
 411                         struct info3_text {
 412                                 SMB_TIME_T logon_time;
 413                                 SMB_TIME_T logoff_time;
 414                                 SMB_TIME_T kickoff_time;
 415                                 SMB_TIME_T pass_last_set_time;
 416                                 SMB_TIME_T pass_can_change_time;
 417                                 SMB_TIME_T pass_must_change_time;
 418                                 uint32 logon_count;
 419                                 uint32 bad_pw_count;
 420                                 uint32 user_rid;
 421                                 uint32 group_rid;
 422                                 uint32 num_groups;
 423                                 uint32 user_flgs;
 424                                 uint32 acct_flags;
 425                                 uint32 num_other_sids;
 426                                 fstring dom_sid;
 427                                 fstring user_name;
 428                                 fstring full_name;
 429                                 fstring logon_script;
 430                                 fstring profile_path;
 431                                 fstring home_dir;
 432                                 fstring dir_drive;
 433                                 fstring logon_srv;
 434                                 fstring logon_dom;
 435                         } info3;
 436                 } auth;
 437                 struct {
 438                         fstring name;
 439                         fstring alt_name;
 440                         fstring sid;
 441                         BOOL native_mode;
 442                         BOOL active_directory;
 443                         BOOL primary;
 444                         uint32 sequence_number;
 445                 } domain_info;
 446                 struct {
 447                         fstring acct_name;
 448                         fstring full_name;
 449                         fstring homedir;
 450                         fstring shell;
 451                         uint32 primary_gid;
 452                         uint32 group_rid;
 453                 } user_info;
 454                 struct {
 455                         uint32 auth_blob_len; /* blob in extra_data */
 456                 } ccache_ntlm_auth;
 457         } data;
 458
 459         /* Variable length return data */
 460
 461         union {
 462                 SMB_TIME_T padding;
 463                 void *data;
 464         } extra_data;
 465 };
 466
 467 struct WINBINDD_MEMORY_CREDS {
 468         struct WINBINDD_MEMORY_CREDS *next, *prev;
 469         const char *username; /* lookup key. */
 470         uid_t uid;
 471         int ref_count;
 472         size_t len;
 473         unsigned char *nt_hash; /* Base pointer for the following 2 */
 474         unsigned char *lm_hash;
 475         char *pass;
 476 };
 477
 478 struct WINBINDD_CCACHE_ENTRY {
 479         struct WINBINDD_CCACHE_ENTRY *next, *prev;
 480         const char *principal_name;
 481         const char *ccname;
 482         const char *service;
 483         const char *username;
 484         const char *realm;
 485         struct WINBINDD_MEMORY_CREDS *cred_ptr;
 486         int ref_count;
 487         uid_t uid;
 488         time_t create_time;
 489         time_t renew_until;
 490         time_t refresh_time;
 491         struct timed_event *event;
 492 };
 493
 494 #endif