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 /*
  12  * This should be under the HAVE_KRB5 flag but since they're used
  13  * in lp_kerberos_method(), they ned to be always available
  14  */
  15 #define KERBEROS_VERIFY_SECRETS 0
  16 #define KERBEROS_VERIFY_SYSTEM_KEYTAB 1
  17 #define KERBEROS_VERIFY_DEDICATED_KEYTAB 2
  18 #define KERBEROS_VERIFY_SECRETS_AND_KEYTAB 3
  19
  20 /*
  21  * If you add any entries to the above, please modify the below expressions
  22  * so they remain accurate.
  23  */
  24 #define USE_KERBEROS_KEYTAB (KERBEROS_VERIFY_SECRETS != lp_kerberos_method())
  25 #define USE_SYSTEM_KEYTAB \
  26     ((KERBEROS_VERIFY_SECRETS_AND_KEYTAB == lp_kerberos_method()) || \
  27      (KERBEROS_VERIFY_SYSTEM_KEYTAB == lp_kerberos_method()))
  28
  29 #define TOK_ID_KRB_AP_REQ       ((const uint8_t *)"\x01\x00")
  30 #define TOK_ID_KRB_AP_REP       ((const uint8_t *)"\x02\x00")
  31 #define TOK_ID_KRB_ERROR        ((const uint8_t *)"\x03\x00")
  32 #define TOK_ID_GSS_GETMIC       ((const uint8_t *)"\x01\x01")
  33 #define TOK_ID_GSS_WRAP         ((const uint8_t *)"\x02\x01")
  34
  35 enum wb_posix_mapping {
  36         WB_POSIX_MAP_UNKNOWN    = -1,
  37         WB_POSIX_MAP_TEMPLATE   = 0,
  38         WB_POSIX_MAP_SFU        = 1,
  39         WB_POSIX_MAP_SFU20      = 2,
  40         WB_POSIX_MAP_RFC2307    = 3,
  41         WB_POSIX_MAP_UNIXINFO   = 4
  42 };
  43
  44 /* there are 5 possible types of errors the ads subsystem can produce */
  45 enum ads_error_type {ENUM_ADS_ERROR_KRB5, ENUM_ADS_ERROR_GSS,
  46                      ENUM_ADS_ERROR_LDAP, ENUM_ADS_ERROR_SYSTEM, ENUM_ADS_ERROR_NT};
  47
  48 typedef struct {
  49         enum ads_error_type error_type;
  50         union err_state{
  51                 int rc;
  52                 NTSTATUS nt_status;
  53         } err;
  54         /* For error_type = ENUM_ADS_ERROR_GSS minor_status describe GSS API error */
  55         /* Where rc represents major_status of GSS API error */
  56         int minor_status;
  57 } ADS_STATUS;
  58
  59 struct ads_struct;
  60
  61 struct ads_saslwrap_ops {
  62         const char *name;
  63         ADS_STATUS (*wrap)(struct ads_struct *, uint8 *buf, uint32 len);
  64         ADS_STATUS (*unwrap)(struct ads_struct *);
  65         void (*disconnect)(struct ads_struct *);
  66 };
  67
  68 enum ads_saslwrap_type {
  69         ADS_SASLWRAP_TYPE_PLAIN = 1,
  70         ADS_SASLWRAP_TYPE_SIGN = 2,
  71         ADS_SASLWRAP_TYPE_SEAL = 4
  72 };
  73
  74 typedef struct ads_struct {
  75         int is_mine;    /* do I own this structure's memory? */
  76
  77         /* info needed to find the server */
  78         struct {
  79                 char *realm;
  80                 char *workgroup;
  81                 char *ldap_server;
  82                 int foreign; /* set to 1 if connecting to a foreign
  83                               * realm */
  84                 bool gc;     /* Is this a global catalog server? */
  85         } server;
  86
  87         /* info needed to authenticate */
  88         struct {
  89                 char *realm;
  90                 char *password;
  91                 char *user_name;
  92                 char *kdc_server;
  93                 unsigned flags;
  94                 int time_offset;
  95                 time_t tgt_expire;
  96                 time_t tgs_expire;
  97                 time_t renewable;
  98         } auth;
  99
 100         /* info derived from the servers config */
 101         struct {
 102                 uint32 flags; /* cldap flags identifying the services. */
 103                 char *realm;
 104                 char *bind_path;
 105                 char *ldap_server_name;
 106                 char *server_site_name;
 107                 char *client_site_name;
 108                 time_t current_time;
 109                 char *schema_path;
 110                 char *config_path;
 111         } config;
 112
 113         /* info about the current LDAP connection */
 114 #ifdef HAVE_LDAP
 115         struct {
 116                 LDAP *ld;
 117                 struct sockaddr_storage ss; /* the ip of the active connection, if any */
 118                 time_t last_attempt; /* last attempt to reconnect */
 119                 int port;
 120
 121                 enum ads_saslwrap_type wrap_type;
 122
 123 #ifdef HAVE_LDAP_SASL_WRAPPING
 124                 Sockbuf_IO_Desc *sbiod; /* lowlevel state for LDAP wrapping */
 125 #endif /* HAVE_LDAP_SASL_WRAPPING */
 126                 TALLOC_CTX *mem_ctx;
 127                 const struct ads_saslwrap_ops *wrap_ops;
 128                 void *wrap_private_data;
 129                 struct {
 130                         uint32 ofs;
 131                         uint32 needed;
 132                         uint32 left;
 133 #define        ADS_SASL_WRAPPING_IN_MAX_WRAPPED        0x0FFFFFFF
 134                         uint32 max_wrapped;
 135                         uint32 min_wrapped;
 136                         uint32 size;
 137                         uint8 *buf;
 138                 } in;
 139                 struct {
 140                         uint32 ofs;
 141                         uint32 left;
 142 #define        ADS_SASL_WRAPPING_OUT_MAX_WRAPPED       0x00A00000
 143                         uint32 max_unwrapped;
 144                         uint32 sig_size;
 145                         uint32 size;
 146                         uint8 *buf;
 147                 } out;
 148         } ldap;
 149 #endif /* HAVE_LDAP */
 150 } ADS_STRUCT;
 151
 152 /* used to remember the names of the posix attributes in AD */
 153 /* see the rfc2307 & sfu nss backends */
 154
 155 struct posix_schema {
 156         char *posix_homedir_attr;
 157         char *posix_shell_attr;
 158         char *posix_uidnumber_attr;
 159         char *posix_gidnumber_attr;
 160         char *posix_gecos_attr;
 161         char *posix_uid_attr;
 162 };
 163
 164
 165
 166 #ifdef HAVE_ADS
 167 typedef LDAPMod **ADS_MODLIST;
 168 #else
 169 typedef void **ADS_MODLIST;
 170 #endif
 171
 172 /* macros to simplify error returning */
 173 #define ADS_ERROR(rc) ADS_ERROR_LDAP(rc)
 174 #define ADS_ERROR_LDAP(rc) ads_build_error(ENUM_ADS_ERROR_LDAP, rc, 0)
 175 #define ADS_ERROR_SYSTEM(rc) ads_build_error(ENUM_ADS_ERROR_SYSTEM, rc?rc:EINVAL, 0)
 176 #define ADS_ERROR_KRB5(rc) ads_build_error(ENUM_ADS_ERROR_KRB5, rc, 0)
 177 #define ADS_ERROR_GSS(rc, minor) ads_build_error(ENUM_ADS_ERROR_GSS, rc, minor)
 178 #define ADS_ERROR_NT(rc) ads_build_nt_error(ENUM_ADS_ERROR_NT,rc)
 179
 180 #define ADS_ERR_OK(status) ((status.error_type == ENUM_ADS_ERROR_NT) ? NT_STATUS_IS_OK(status.err.nt_status):(status.err.rc == 0))
 181 #define ADS_SUCCESS ADS_ERROR(0)
 182
 183 #define ADS_ERROR_HAVE_NO_MEMORY(x) do { \
 184         if (!(x)) {\
 185                 return ADS_ERROR(LDAP_NO_MEMORY);\
 186         }\
 187 } while (0)
 188
 189
 190 /* time between reconnect attempts */
 191 #define ADS_RECONNECT_TIME 5
 192
 193 /* ldap control oids */
 194 #define ADS_PAGE_CTL_OID        "1.2.840.113556.1.4.319"
 195 #define ADS_NO_REFERRALS_OID    "1.2.840.113556.1.4.1339"
 196 #define ADS_SERVER_SORT_OID     "1.2.840.113556.1.4.473"
 197 #define ADS_PERMIT_MODIFY_OID   "1.2.840.113556.1.4.1413"
 198 #define ADS_ASQ_OID             "1.2.840.113556.1.4.1504"
 199 #define ADS_EXTENDED_DN_OID     "1.2.840.113556.1.4.529"
 200 #define ADS_SD_FLAGS_OID        "1.2.840.113556.1.4.801"
 201
 202 /* ldap attribute oids (Services for Unix 3.0, 3.5) */
 203 #define ADS_ATTR_SFU_UIDNUMBER_OID      "1.2.840.113556.1.6.18.1.310"
 204 #define ADS_ATTR_SFU_GIDNUMBER_OID      "1.2.840.113556.1.6.18.1.311"
 205 #define ADS_ATTR_SFU_HOMEDIR_OID        "1.2.840.113556.1.6.18.1.344"
 206 #define ADS_ATTR_SFU_SHELL_OID          "1.2.840.113556.1.6.18.1.312"
 207 #define ADS_ATTR_SFU_GECOS_OID          "1.2.840.113556.1.6.18.1.337"
 208 #define ADS_ATTR_SFU_UID_OID            "1.2.840.113556.1.6.18.1.309"
 209
 210 /* ldap attribute oids (Services for Unix 2.0) */
 211 #define ADS_ATTR_SFU20_UIDNUMBER_OID    "1.2.840.113556.1.4.7000.187.70"
 212 #define ADS_ATTR_SFU20_GIDNUMBER_OID    "1.2.840.113556.1.4.7000.187.71"
 213 #define ADS_ATTR_SFU20_HOMEDIR_OID      "1.2.840.113556.1.4.7000.187.106"
 214 #define ADS_ATTR_SFU20_SHELL_OID        "1.2.840.113556.1.4.7000.187.72"
 215 #define ADS_ATTR_SFU20_GECOS_OID        "1.2.840.113556.1.4.7000.187.97"
 216 #define ADS_ATTR_SFU20_UID_OID          "1.2.840.113556.1.4.7000.187.102"
 217
 218
 219 /* ldap attribute oids (RFC2307) */
 220 #define ADS_ATTR_RFC2307_UIDNUMBER_OID  "1.3.6.1.1.1.1.0"
 221 #define ADS_ATTR_RFC2307_GIDNUMBER_OID  "1.3.6.1.1.1.1.1"
 222 #define ADS_ATTR_RFC2307_HOMEDIR_OID    "1.3.6.1.1.1.1.3"
 223 #define ADS_ATTR_RFC2307_SHELL_OID      "1.3.6.1.1.1.1.4"
 224 #define ADS_ATTR_RFC2307_GECOS_OID      "1.3.6.1.1.1.1.2"
 225 #define ADS_ATTR_RFC2307_UID_OID        "0.9.2342.19200300.100.1.1"
 226
 227 /* ldap bitwise searches */
 228 #define ADS_LDAP_MATCHING_RULE_BIT_AND  "1.2.840.113556.1.4.803"
 229 #define ADS_LDAP_MATCHING_RULE_BIT_OR   "1.2.840.113556.1.4.804"
 230
 231 #define ADS_PINGS          0x0000FFFF  /* Ping response */
 232
 233 /* ads auth control flags */
 234 #define ADS_AUTH_DISABLE_KERBEROS 0x0001
 235 #define ADS_AUTH_NO_BIND          0x0002
 236 #define ADS_AUTH_ANON_BIND        0x0004
 237 #define ADS_AUTH_SIMPLE_BIND      0x0008
 238 #define ADS_AUTH_ALLOW_NTLMSSP    0x0010
 239 #define ADS_AUTH_SASL_SIGN        0x0020
 240 #define ADS_AUTH_SASL_SEAL        0x0040
 241 #define ADS_AUTH_SASL_FORCE       0x0080
 242 #define ADS_AUTH_USER_CREDS       0x0100
 243
 244 /* Kerberos environment variable names */
 245 #define KRB5_ENV_CCNAME "KRB5CCNAME"
 246
 247 #define WELL_KNOWN_GUID_COMPUTERS       "AA312825768811D1ADED00C04FD8D5CD"
 248 #define WELL_KNOWN_GUID_USERS           "A9D1CA15768811D1ADED00C04FD8D5CD"
 249
 250 enum ads_extended_dn_flags {
 251         ADS_EXTENDED_DN_HEX_STRING      = 0,
 252         ADS_EXTENDED_DN_STRING          = 1 /* not supported on win2k */
 253 };
 254
 255 /* this is probably not very well suited to pass other controls generically but
 256  * is good enough for the extended dn control where it is only used for atm */
 257
 258 typedef struct {
 259         const char *control;
 260         int val;
 261         int critical;
 262 } ads_control;
 263
 264 #define ADS_IGNORE_PRINCIPAL "not_defined_in_RFC4178@please_ignore"
 265
 266 #endif  /* _INCLUDE_ADS_H_ */