wscript_configure_system_mitkrb5

   1 import Logs, Options, sys
   2
   3 # Check for kerberos
   4 have_gssapi=False
   5
   6 krb5_min_required_version = "1.9"
   7
   8 # Requried versions
   9 krb5_required_version = krb5_min_required_version
  10 if conf.CONFIG_SET('AD_DC_BUILD_IS_ENABLED'):
  11     krb5_required_version = "1.15.1"
  12
  13 def parse_version(v):
  14     return tuple(map(int, (v.split("."))))
  15
  16 def krb5_define_syslib(conf, lib, deps):
  17     found = 'FOUND_SYSTEMLIB_' + lib
  18     if found in conf.env:
  19         return
  20     conf.SET_TARGET_TYPE(lib, 'SYSLIB')
  21     conf.SET_SYSLIB_DEPS(lib, deps)
  22     conf.env[found] = True
  23
  24 Logs.info("Looking for kerberos features")
  25 conf.find_program('krb5-config.heimdal', var='HEIMDAL_KRB5_CONFIG')
  26
  27 if isinstance(Options.options.with_system_mitkrb5, list):
  28     path_krb5_config = [x+'/bin' for x in Options.options.with_system_mitkrb5]
  29 else:
  30     path_krb5_config = None
  31
  32 conf.find_program('krb5-config', path_list=path_krb5_config, var='KRB5_CONFIG')
  33 if conf.env.KRB5_CONFIG:
  34     conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  35                package="", uselib_store="KRB5")
  36     krb5_define_syslib(conf, "krb5", conf.env['LIB_KRB5'])
  37
  38     conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  39                    package="kadm-server", uselib_store="KADM-SERVER")
  40     conf.CHECK_FUNCS_IN('kadm5_init', 'kadm5srv_mit')
  41
  42     conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  43                    package="kdb", uselib_store="KDB5")
  44     krb5_define_syslib(conf, "kdb5", conf.env['LIB_KDB5'])
  45
  46     conf.CHECK_CFG(path=conf.env.KRB5_CONFIG, args="--cflags --libs",
  47                package="gssapi", uselib_store="GSSAPI")
  48     krb5_define_syslib(conf, "gssapi", conf.env['LIB_GSSAPI'])
  49     if 'k5crypto' in conf.env['LIB_GSSAPI']:
  50         krb5_define_syslib(conf, "k5crypto", conf.env['LIB_GSSAPI'])
  51     if 'com_err' in conf.env['LIB_GSSAPI']:
  52         krb5_define_syslib(conf, "com_err", conf.env['LIB_GSSAPI'])
  53     if 'gssapi_krb5' in conf.env['LIB_GSSAPI']:
  54         krb5_define_syslib(conf, "gssapi_krb5", conf.env['LIB_GSSAPI'])
  55
  56     vendor = conf.cmd_and_log("%(path)s --vendor" % dict(path=conf.env.KRB5_CONFIG), dict())
  57     conf.env.KRB5_VENDOR = vendor.strip().lower()
  58     if conf.env.KRB5_VENDOR != 'heimdal':
  59         conf.define('USING_SYSTEM_KRB5', 1)
  60         del conf.env.HEIMDAL_KRB5_CONFIG
  61         krb5_conf_version = conf.cmd_and_log("%(path)s --version" % dict(path=conf.env.KRB5_CONFIG), dict()).strip()
  62
  63         krb5_version = krb5_conf_version.split()[-1]
  64
  65         # drop '-prerelease' suffix
  66         if krb5_version.find('-') > 0:
  67             krb5_version = krb5_version.split("-")[0]
  68
  69         if parse_version(krb5_version) < parse_version(krb5_required_version):
  70             Logs.error('ERROR: The MIT KRB5 build with Samba AD requires at least %s. %s has been found and cannot be used' % (krb5_required_version, krb5_version))
  71             Logs.error('ERROR: If you want to just build Samba FS (File Server) use the option --without-ad-dc which requires version %s' % (krb5_min_required_version))
  72             Logs.error('ERROR: You may try to build with embedded Heimdal Kerberos by not specifying --with-system-mitkrb5')
  73             sys.exit(1)
  74         else:
  75             Logs.info('MIT Kerberos %s detected, MIT krb5 build can proceed' % (krb5_version))
  76
  77 conf.CHECK_CFG(args="--cflags --libs", package="com_err", uselib_store="com_err")
  78 conf.CHECK_FUNCS_IN('_et_list', 'com_err')
  79 conf.CHECK_HEADERS('com_err.h', lib='com_err')
  80 conf.CHECK_HEADERS('kdb.h', lib='kdb5')
  81
  82 conf.CHECK_HEADERS('krb5.h krb5/locate_plugin.h', lib='krb5')
  83 conf.CHECK_HEADERS('krb5.h krb5/localauth_plugin.h', lib='krb5')
  84 possible_gssapi_headers="gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_ext.h gssapi/gssapi_krb5.h gssapi/gssapi_oid.h"
  85 conf.CHECK_HEADERS(possible_gssapi_headers, lib='gssapi')
  86
  87 conf.CHECK_FUNCS_IN('krb5_encrypt_data', 'k5crypto')
  88 conf.CHECK_FUNCS_IN('des_set_key','crypto')
  89 conf.CHECK_FUNCS_IN('copy_Authenticator', 'asn1')
  90 conf.CHECK_FUNCS_IN('roken_getaddrinfo_hostspec', 'roken')
  91
  92 conf.CHECK_HEADERS('profile.h')
  93
  94 if conf.CHECK_FUNCS_IN('gss_display_status', 'gssapi gssapi_krb5'):
  95     have_gssapi=True
  96
  97 if not have_gssapi:
  98     if conf.env.KRB5_CONFIG and conf.env.KRB5_CONFIG != 'heimdal':
  99         Logs.error("ERROR: WAF build with MIT Krb5 requires working GSSAPI implementation")
 100         sys.exit(1)
 101
 102 conf.CHECK_FUNCS_IN('''
 103        gss_wrap_iov
 104        gss_krb5_import_cred
 105        gss_get_name_attribute
 106        gss_mech_krb5
 107        gss_oid_equal
 108        gss_inquire_sec_context_by_oid
 109        gsskrb5_extract_authz_data_from_sec_context
 110        gss_krb5_export_lucid_sec_context
 111        gss_import_cred gss_export_cred
 112        gss_acquire_cred_from
 113        ''', 'gssapi gssapi_krb5')
 114 conf.CHECK_VARIABLE('GSS_KRB5_CRED_NO_CI_FLAGS_X', headers=possible_gssapi_headers)
 115 conf.CHECK_FUNCS_IN('krb5_mk_req_extended krb5_kt_compare', 'krb5')
 116 conf.CHECK_FUNCS('''
 117        krb5_auth_con_getrecvsubkey
 118        krb5_auth_con_getsendsubkey
 119        krb5_set_default_in_tkt_etypes krb5_set_default_tgs_enctypes
 120        krb5_set_default_tgs_ktypes krb5_principal2salt
 121        krb5_c_string_to_key krb5_get_pw_salt krb5_string_to_key_salt krb5_auth_con_setkey
 122        krb5_auth_con_setuseruserkey krb5_get_permitted_enctypes
 123        krb5_get_default_in_tkt_etypes krb5_free_data_contents
 124        krb5_principal_get_comp_string krb5_free_unparsed_name
 125        krb5_free_keytab_entry_contents krb5_kt_free_entry krb5_krbhst_init
 126        krb5_krbhst_get_addrinfo
 127        krb5_crypto_init krb5_crypto_destroy
 128        krb5_c_verify_checksum krb5_principal_compare_any_realm
 129        krb5_parse_name_norealm krb5_princ_size krb5_get_init_creds_opt_set_pac_request
 130        krb5_get_renewed_creds krb5_free_error_contents
 131        initialize_krb5_error_table krb5_get_init_creds_opt_alloc
 132        krb5_get_init_creds_opt_free krb5_get_init_creds_opt_get_error
 133        krb5_enctype_to_string krb5_fwd_tgt_creds krb5_auth_con_set_req_cksumtype
 134        krb5_get_creds_opt_alloc krb5_get_creds_opt_set_impersonate krb5_get_creds
 135        krb5_get_credentials_for_user krb5_get_host_realm krb5_free_host_realm
 136        krb5_get_init_creds_keyblock krb5_get_init_creds_keytab
 137        krb5_make_principal krb5_build_principal_alloc_va
 138        krb5_cc_get_lifetime krb5_cc_retrieve_cred
 139        krb5_cc_copy_creds
 140        krb5_free_checksum_contents krb5_c_make_checksum krb5_create_checksum
 141        krb5_config_get_bool_default krb5_get_profile
 142        krb5_data_copy
 143        krb5_init_keyblock krb5_principal_set_realm krb5_principal_get_type
 144        krb5_principal_set_type
 145        krb5_warnx
 146        krb5_get_prompt_types
 147        ''',
 148      lib='krb5 k5crypto')
 149 conf.CHECK_DECLS('''krb5_get_credentials_for_user
 150                     krb5_auth_con_set_req_cksumtype''',
 151                     headers='krb5.h', always=True)
 152 conf.CHECK_VARIABLE('AP_OPTS_USE_SUBKEY', headers='krb5.h')
 153 conf.CHECK_VARIABLE('KV5M_KEYTAB', headers='krb5.h')
 154 conf.CHECK_VARIABLE('KRB5_KU_OTHER_CKSUM', headers='krb5.h')
 155 conf.CHECK_VARIABLE('KRB5_KEYUSAGE_APP_DATA_CKSUM', headers='krb5.h')
 156 conf.CHECK_VARIABLE('ENCTYPE_AES128_CTS_HMAC_SHA1_96', headers='krb5.h')
 157 conf.CHECK_VARIABLE('ENCTYPE_AES256_CTS_HMAC_SHA1_96', headers='krb5.h')
 158 conf.CHECK_DECLS('KRB5_PDU_NONE', reverse=True, headers='krb5.h')
 159 conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'key', headers='krb5.h',
 160                             define='HAVE_KRB5_KEYTAB_ENTRY_KEY')
 161 conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'keyblock', headers='krb5.h',
 162                             define='HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK')
 163 conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'magic', headers='krb5.h',
 164                             define='HAVE_MAGIC_IN_KRB5_ADDRESS')
 165 conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'addrtype', headers='krb5.h',
 166                             define='HAVE_ADDRTYPE_IN_KRB5_ADDRESS')
 167 conf.CHECK_STRUCTURE_MEMBER('krb5_ap_req', 'ticket', headers='krb5.h',
 168                             define='HAVE_TICKET_POINTER_IN_KRB5_AP_REQ')
 169 conf.CHECK_STRUCTURE_MEMBER('krb5_prompt', 'type', headers='krb5.h',
 170                             define='HAVE_KRB5_PROMPT_TYPE')
 171
 172 conf.CHECK_TYPE('krb5_encrypt_block', headers='krb5.h')
 173
 174 conf.CHECK_CODE('''
 175        krb5_context ctx;
 176        krb5_get_init_creds_opt *opt = NULL;
 177        krb5_get_init_creds_opt_free(ctx, opt);
 178        ''',
 179     'KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT',
 180     headers='krb5.h', link=False,
 181     msg="Checking whether krb5_get_init_creds_opt_free takes a context argument")
 182 conf.CHECK_CODE('''
 183        const krb5_data *pkdata;
 184        krb5_context context;
 185        krb5_principal principal;
 186        pkdata = krb5_princ_component(context, principal, 0);
 187        ''',
 188     'HAVE_KRB5_PRINC_COMPONENT',
 189     headers='krb5.h', lib='krb5',
 190     msg="Checking whether krb5_princ_component is available")
 191
 192 conf.CHECK_CODE('''
 193        int main(void) {
 194        char buf[256];
 195        krb5_enctype_to_string(1, buf, 256);
 196        return 0;
 197        }''',
 198     'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG',
 199     headers='krb5.h', lib='krb5 k5crypto',
 200     addmain=False, cflags=conf.env['WERROR_CFLAGS'],
 201     msg="Checking whether krb5_enctype_to_string takes size_t argument")
 202
 203 conf.CHECK_CODE('''
 204        int main(void) {
 205        krb5_context context = NULL;
 206        char *str = NULL;
 207        krb5_enctype_to_string(context, 1, &str);
 208        if (str) free (str);
 209        return 0;
 210        }''',
 211     'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG',
 212     headers='krb5.h stdlib.h', lib='krb5',
 213     addmain=False, cflags=conf.env['WERROR_CFLAGS'],
 214     msg="Checking whether krb5_enctype_to_string takes krb5_context argument")
 215 conf.CHECK_CODE('''
 216        int main(void) {
 217        krb5_context ctx = NULL;
 218        krb5_principal princ = NULL;
 219        const char *str = krb5_princ_realm(ctx, princ)->data;
 220        return 0;
 221        }''',
 222     'HAVE_KRB5_PRINC_REALM',
 223     headers='krb5.h', lib='krb5',
 224     addmain=False,
 225     msg="Checking whether the macro krb5_princ_realm is defined")
 226 conf.CHECK_CODE('''
 227        int main(void) {
 228            krb5_context context;
 229            krb5_principal principal;
 230            const char *realm; realm = krb5_principal_get_realm(context, principal);
 231            return 0;
 232        }''',
 233     'HAVE_KRB5_PRINCIPAL_GET_REALM',
 234     headers='krb5.h', lib='krb5',
 235     addmain=False,
 236     msg="Checking whether krb5_principal_get_realm is defined")
 237 conf.CHECK_CODE('''
 238        krb5_enctype enctype;
 239        enctype = ENCTYPE_ARCFOUR_HMAC_MD5;
 240        ''',
 241     '_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5',
 242     headers='krb5.h', lib='krb5',
 243     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_MD5 key type definition is available");
 244 conf.CHECK_CODE('''
 245        krb5_enctype enctype;
 246        enctype = ENCTYPE_ARCFOUR_HMAC_MD5_56;
 247        ''',
 248     '_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5_56',
 249     headers='krb5.h', lib='krb5',
 250     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_MD5_56 key type definition is available");
 251 conf.CHECK_CODE('''
 252        krb5_keytype keytype;
 253        keytype = KEYTYPE_ARCFOUR_56;
 254        ''',
 255     '_HAVE_KEYTYPE_ARCFOUR_56',
 256     headers='krb5.h', lib='krb5',
 257     msg="Checking whether the HAVE_KEYTYPE_ARCFOUR_56 key type definition is available");
 258 if conf.CONFIG_SET('_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5') and conf.CONFIG_SET('_HAVE_KEYTYPE_ARCFOUR_56'):
 259     conf.DEFINE('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5', '1')
 260 if conf.CONFIG_SET('_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5_56') and conf.CONFIG_SET('_HAVE_KEYTYPE_ARCFOUR_56'):
 261     conf.DEFINE('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5_56', '1')
 262
 263 conf.CHECK_CODE('''
 264        krb5_enctype enctype;
 265        enctype = ENCTYPE_ARCFOUR_HMAC;
 266        ''',
 267     'HAVE_ENCTYPE_ARCFOUR_HMAC',
 268     headers='krb5.h', lib='krb5',
 269     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC key type definition is available");
 270 conf.CHECK_CODE('''
 271        krb5_enctype enctype;
 272        enctype = ENCTYPE_ARCFOUR_HMAC_EXP;
 273        ''',
 274     'HAVE_ENCTYPE_ARCFOUR_HMAC_EXP',
 275     headers='krb5.h', lib='krb5',
 276     msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_EXP key type definition is available");
 277
 278 conf.CHECK_CODE('''
 279        krb5_context context;
 280        krb5_keytab keytab;
 281        krb5_init_context(&context);
 282        return krb5_kt_resolve(context, "WRFILE:api", &keytab);
 283        ''',
 284     'HAVE_WRFILE_KEYTAB',
 285     headers='krb5.h', lib='krb5', execute=True,
 286     msg="Checking whether the WRFILE -keytab is supported");
 287 # Check for KRB5_DEPRECATED handling
 288 conf.CHECK_CODE('''#define KRB5_DEPRECATED 1
 289        #include <krb5.h>''',
 290    'HAVE_KRB5_DEPRECATED_WITH_IDENTIFIER', addmain=False,
 291     link=False,
 292     msg="Checking for KRB5_DEPRECATED define taking an identifier")
 293
 294 conf.CHECK_CODE('''
 295        krb5_creds creds;
 296        creds.flags.b.initial = 0;
 297        ''',
 298     'HAVE_FLAGS_IN_KRB5_CREDS',
 299     headers='krb5.h', lib='krb5', execute=False,
 300     msg="Checking whether krb5_creds have flags property")
 301
 302 # Check for MIT KDC
 303 if conf.CONFIG_SET('AD_DC_BUILD_IS_ENABLED'):
 304     Logs.info("Looking for MIT KDC")
 305     conf.DEFINE('SAMBA_USES_MITKDC', 1);
 306
 307     kdc_path_list = [ '/usr/sbin', '/usr/lib/mit/sbin']
 308
 309     if getattr(Options.options, 'with_system_mitkdc', None):
 310         conf.DEFINE('MIT_KDC_PATH', '"' + Options.options.with_system_mitkdc + '"')
 311     else:
 312         conf.find_program('krb5kdc', path_list=kdc_path_list, var='MIT_KDC_BINARY', mandatory=True)
 313         conf.DEFINE('MIT_KDC_PATH', '"' + conf.env.MIT_KDC_BINARY + '"')