source3/include/ads.h

   1 #ifndef _INCLUDE_ADS_H_
   2 #define _INCLUDE_ADS_H_
   3 /*
   4   header for ads (active directory) library routines
   5
   6   basically this is a wrapper around ldap
   7 */
   8
   9 #include "../libds/common/flags.h"
  10
  11 enum wb_posix_mapping {
  12         WB_POSIX_MAP_UNKNOWN    = -1,
  13         WB_POSIX_MAP_TEMPLATE   = 0,
  14         WB_POSIX_MAP_SFU        = 1,
  15         WB_POSIX_MAP_SFU20      = 2,
  16         WB_POSIX_MAP_RFC2307    = 3,
  17         WB_POSIX_MAP_UNIXINFO   = 4
  18 };
  19
  20 /* there are 5 possible types of errors the ads subsystem can produce */
  21 enum ads_error_type {ENUM_ADS_ERROR_KRB5, ENUM_ADS_ERROR_GSS,
  22                      ENUM_ADS_ERROR_LDAP, ENUM_ADS_ERROR_SYSTEM, ENUM_ADS_ERROR_NT};
  23
  24 typedef struct {
  25         enum ads_error_type error_type;
  26         union err_state{
  27                 int rc;
  28                 NTSTATUS nt_status;
  29         } err;
  30         /* For error_type = ENUM_ADS_ERROR_GSS minor_status describe GSS API error */
  31         /* Where rc represents major_status of GSS API error */
  32         int minor_status;
  33 } ADS_STATUS;
  34
  35 struct ads_struct;
  36
  37 struct ads_saslwrap_ops {
  38         const char *name;
  39         ADS_STATUS (*wrap)(struct ads_struct *, uint8 *buf, uint32 len);
  40         ADS_STATUS (*unwrap)(struct ads_struct *);
  41         void (*disconnect)(struct ads_struct *);
  42 };
  43
  44 enum ads_saslwrap_type {
  45         ADS_SASLWRAP_TYPE_PLAIN = 1,
  46         ADS_SASLWRAP_TYPE_SIGN = 2,
  47         ADS_SASLWRAP_TYPE_SEAL = 4
  48 };
  49
  50 typedef struct ads_struct {
  51         int is_mine;    /* do I own this structure's memory? */
  52
  53         /* info needed to find the server */
  54         struct {
  55                 char *realm;
  56                 char *workgroup;
  57                 char *ldap_server;
  58                 int foreign; /* set to 1 if connecting to a foreign
  59                               * realm */
  60                 bool gc;     /* Is this a global catalog server? */
  61         } server;
  62
  63         /* info needed to authenticate */
  64         struct {
  65                 char *realm;
  66                 char *password;
  67                 char *user_name;
  68                 char *kdc_server;
  69                 unsigned flags;
  70                 int time_offset;
  71                 time_t tgt_expire;
  72                 time_t tgs_expire;
  73                 time_t renewable;
  74         } auth;
  75
  76         /* info derived from the servers config */
  77         struct {
  78                 uint32 flags; /* cldap flags identifying the services. */
  79                 char *realm;
  80                 char *bind_path;
  81                 char *ldap_server_name;
  82                 char *server_site_name;
  83                 char *client_site_name;
  84                 time_t current_time;
  85                 char *schema_path;
  86                 char *config_path;
  87         } config;
  88
  89         /* info about the current LDAP connection */
  90 #ifdef HAVE_LDAP
  91         struct {
  92                 LDAP *ld;
  93                 struct sockaddr_storage ss; /* the ip of the active connection, if any */
  94                 time_t last_attempt; /* last attempt to reconnect */
  95                 int port;
  96
  97                 enum ads_saslwrap_type wrap_type;
  98
  99 #ifdef HAVE_LDAP_SASL_WRAPPING
 100                 Sockbuf_IO_Desc *sbiod; /* lowlevel state for LDAP wrapping */
 101 #endif /* HAVE_LDAP_SASL_WRAPPING */
 102                 TALLOC_CTX *mem_ctx;
 103                 const struct ads_saslwrap_ops *wrap_ops;
 104                 void *wrap_private_data;
 105                 struct {
 106                         uint32 ofs;
 107                         uint32 needed;
 108                         uint32 left;
 109 #define        ADS_SASL_WRAPPING_IN_MAX_WRAPPED        0x0FFFFFFF
 110                         uint32 max_wrapped;
 111                         uint32 min_wrapped;
 112                         uint32 size;
 113                         uint8 *buf;
 114                 } in;
 115                 struct {
 116                         uint32 ofs;
 117                         uint32 left;
 118 #define        ADS_SASL_WRAPPING_OUT_MAX_WRAPPED       0x00A00000
 119                         uint32 max_unwrapped;
 120                         uint32 sig_size;
 121                         uint32 size;
 122                         uint8 *buf;
 123                 } out;
 124         } ldap;
 125 #endif /* HAVE_LDAP */
 126 } ADS_STRUCT;
 127
 128 /* used to remember the names of the posix attributes in AD */
 129 /* see the rfc2307 & sfu nss backends */
 130
 131 struct posix_schema {
 132         char *posix_homedir_attr;
 133         char *posix_shell_attr;
 134         char *posix_uidnumber_attr;
 135         char *posix_gidnumber_attr;
 136         char *posix_gecos_attr;
 137         char *posix_uid_attr;
 138 };
 139
 140
 141
 142 #ifdef HAVE_ADS
 143 typedef LDAPMod **ADS_MODLIST;
 144 #else
 145 typedef void **ADS_MODLIST;
 146 #endif
 147
 148 /* macros to simplify error returning */
 149 #define ADS_ERROR(rc) ADS_ERROR_LDAP(rc)
 150 #define ADS_ERROR_LDAP(rc) ads_build_error(ENUM_ADS_ERROR_LDAP, rc, 0)
 151 #define ADS_ERROR_SYSTEM(rc) ads_build_error(ENUM_ADS_ERROR_SYSTEM, rc?rc:EINVAL, 0)
 152 #define ADS_ERROR_KRB5(rc) ads_build_error(ENUM_ADS_ERROR_KRB5, rc, 0)
 153 #define ADS_ERROR_GSS(rc, minor) ads_build_error(ENUM_ADS_ERROR_GSS, rc, minor)
 154 #define ADS_ERROR_NT(rc) ads_build_nt_error(ENUM_ADS_ERROR_NT,rc)
 155
 156 #define ADS_ERR_OK(status) ((status.error_type == ENUM_ADS_ERROR_NT) ? NT_STATUS_IS_OK(status.err.nt_status):(status.err.rc == 0))
 157 #define ADS_SUCCESS ADS_ERROR(0)
 158
 159 #define ADS_ERROR_HAVE_NO_MEMORY(x) do { \
 160         if (!(x)) {\
 161                 return ADS_ERROR(LDAP_NO_MEMORY);\
 162         }\
 163 } while (0)
 164
 165
 166 /* time between reconnect attempts */
 167 #define ADS_RECONNECT_TIME 5
 168
 169 /* ldap control oids */
 170 #define ADS_PAGE_CTL_OID        "1.2.840.113556.1.4.319"
 171 #define ADS_NO_REFERRALS_OID    "1.2.840.113556.1.4.1339"
 172 #define ADS_SERVER_SORT_OID     "1.2.840.113556.1.4.473"
 173 #define ADS_PERMIT_MODIFY_OID   "1.2.840.113556.1.4.1413"
 174 #define ADS_ASQ_OID             "1.2.840.113556.1.4.1504"
 175 #define ADS_EXTENDED_DN_OID     "1.2.840.113556.1.4.529"
 176 #define ADS_SD_FLAGS_OID        "1.2.840.113556.1.4.801"
 177
 178 /* ldap attribute oids (Services for Unix 3.0, 3.5) */
 179 #define ADS_ATTR_SFU_UIDNUMBER_OID      "1.2.840.113556.1.6.18.1.310"
 180 #define ADS_ATTR_SFU_GIDNUMBER_OID      "1.2.840.113556.1.6.18.1.311"
 181 #define ADS_ATTR_SFU_HOMEDIR_OID        "1.2.840.113556.1.6.18.1.344"
 182 #define ADS_ATTR_SFU_SHELL_OID          "1.2.840.113556.1.6.18.1.312"
 183 #define ADS_ATTR_SFU_GECOS_OID          "1.2.840.113556.1.6.18.1.337"
 184 #define ADS_ATTR_SFU_UID_OID            "1.2.840.113556.1.6.18.1.309"
 185
 186 /* ldap attribute oids (Services for Unix 2.0) */
 187 #define ADS_ATTR_SFU20_UIDNUMBER_OID    "1.2.840.113556.1.4.7000.187.70"
 188 #define ADS_ATTR_SFU20_GIDNUMBER_OID    "1.2.840.113556.1.4.7000.187.71"
 189 #define ADS_ATTR_SFU20_HOMEDIR_OID      "1.2.840.113556.1.4.7000.187.106"
 190 #define ADS_ATTR_SFU20_SHELL_OID        "1.2.840.113556.1.4.7000.187.72"
 191 #define ADS_ATTR_SFU20_GECOS_OID        "1.2.840.113556.1.4.7000.187.97"
 192 #define ADS_ATTR_SFU20_UID_OID          "1.2.840.113556.1.4.7000.187.102"
 193
 194
 195 /* ldap attribute oids (RFC2307) */
 196 #define ADS_ATTR_RFC2307_UIDNUMBER_OID  "1.3.6.1.1.1.1.0"
 197 #define ADS_ATTR_RFC2307_GIDNUMBER_OID  "1.3.6.1.1.1.1.1"
 198 #define ADS_ATTR_RFC2307_HOMEDIR_OID    "1.3.6.1.1.1.1.3"
 199 #define ADS_ATTR_RFC2307_SHELL_OID      "1.3.6.1.1.1.1.4"
 200 #define ADS_ATTR_RFC2307_GECOS_OID      "1.3.6.1.1.1.1.2"
 201 #define ADS_ATTR_RFC2307_UID_OID        "0.9.2342.19200300.100.1.1"
 202
 203 /* ldap bitwise searches */
 204 #define ADS_LDAP_MATCHING_RULE_BIT_AND  "1.2.840.113556.1.4.803"
 205 #define ADS_LDAP_MATCHING_RULE_BIT_OR   "1.2.840.113556.1.4.804"
 206
 207 #define ADS_PINGS          0x0000FFFF  /* Ping response */
 208 #define ADS_DNS_CONTROLLER 0x20000000  /* DomainControllerName is a DNS name*/
 209 #define ADS_DNS_DOMAIN     0x40000000  /* DomainName is a DNS name */
 210 #define ADS_DNS_FOREST     0x80000000  /* DnsForestName is a DNS name */
 211
 212 /* ads auth control flags */
 213 #define ADS_AUTH_DISABLE_KERBEROS 0x0001
 214 #define ADS_AUTH_NO_BIND          0x0002
 215 #define ADS_AUTH_ANON_BIND        0x0004
 216 #define ADS_AUTH_SIMPLE_BIND      0x0008
 217 #define ADS_AUTH_ALLOW_NTLMSSP    0x0010
 218 #define ADS_AUTH_SASL_SIGN        0x0020
 219 #define ADS_AUTH_SASL_SEAL        0x0040
 220 #define ADS_AUTH_SASL_FORCE       0x0080
 221 #define ADS_AUTH_USER_CREDS       0x0100
 222
 223 /* Kerberos environment variable names */
 224 #define KRB5_ENV_CCNAME "KRB5CCNAME"
 225
 226 /* Heimdal uses a slightly different name */
 227 #if defined(HAVE_ENCTYPE_ARCFOUR_HMAC_MD5)
 228 #define ENCTYPE_ARCFOUR_HMAC ENCTYPE_ARCFOUR_HMAC_MD5
 229 #endif
 230
 231 /* The older versions of heimdal that don't have this
 232    define don't seem to use it anyway.  I'm told they
 233    always use a subkey */
 234 #ifndef HAVE_AP_OPTS_USE_SUBKEY
 235 #define AP_OPTS_USE_SUBKEY 0
 236 #endif
 237
 238 #define WELL_KNOWN_GUID_COMPUTERS       "AA312825768811D1ADED00C04FD8D5CD"
 239 #define WELL_KNOWN_GUID_USERS           "A9D1CA15768811D1ADED00C04FD8D5CD"
 240
 241 #ifndef KRB5_ADDR_NETBIOS
 242 #define KRB5_ADDR_NETBIOS 0x14
 243 #endif
 244
 245 #ifndef KRB5KRB_ERR_RESPONSE_TOO_BIG
 246 #define KRB5KRB_ERR_RESPONSE_TOO_BIG (-1765328332L)
 247 #endif
 248
 249 #ifdef HAVE_KRB5
 250 typedef struct {
 251 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
 252         krb5_address **addrs;
 253 #elif defined(HAVE_KRB5_ADDRESSES) /* Heimdal */
 254         krb5_addresses *addrs;
 255 #else
 256 #error UNKNOWN_KRB5_ADDRESS_TYPE
 257 #endif /* defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) */
 258 } smb_krb5_addresses;
 259
 260 #ifdef HAVE_KRB5_KEYBLOCK_KEYVALUE /* Heimdal */
 261 #define KRB5_KEY_TYPE(k)        ((k)->keytype)
 262 #define KRB5_KEY_LENGTH(k)      ((k)->keyvalue.length)
 263 #define KRB5_KEY_DATA(k)        ((k)->keyvalue.data)
 264 #define KRB5_KEY_DATA_CAST      void
 265 #else /* MIT */
 266 #define KRB5_KEY_TYPE(k)        ((k)->enctype)
 267 #define KRB5_KEY_LENGTH(k)      ((k)->length)
 268 #define KRB5_KEY_DATA(k)        ((k)->contents)
 269 #define KRB5_KEY_DATA_CAST      krb5_octet
 270 #endif /* HAVE_KRB5_KEYBLOCK_KEYVALUE */
 271
 272 #ifdef HAVE_KRB5_KEYTAB_ENTRY_KEY               /* MIT */
 273 #define KRB5_KT_KEY(k)          (&(k)->key)
 274 #elif HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK          /* Heimdal */
 275 #define KRB5_KT_KEY(k)          (&(k)->keyblock)
 276 #else
 277 #error krb5_keytab_entry has no key or keyblock member
 278 #endif /* HAVE_KRB5_KEYTAB_ENTRY_KEY */
 279
 280 #endif /* HAVE_KRB5 */
 281
 282 enum ads_extended_dn_flags {
 283         ADS_EXTENDED_DN_HEX_STRING      = 0,
 284         ADS_EXTENDED_DN_STRING          = 1 /* not supported on win2k */
 285 };
 286
 287 /* this is probably not very well suited to pass other controls generically but
 288  * is good enough for the extended dn control where it is only used for atm */
 289
 290 typedef struct {
 291         const char *control;
 292         int val;
 293         int critical;
 294 } ads_control;
 295
 296 #define ADS_IGNORE_PRINCIPAL "not_defined_in_RFC4178@please_ignore"
 297
 298 #endif  /* _INCLUDE_ADS_H_ */