#!/usr/bin/env python
# vim: ft=python expandtab

HEIMDAL_REQ_VERSION = '1.4'

import os

try:
    krb5_config_path = os.environ['KRB5CONFIG']
except KeyError:
    krb5_config_path = 'krb5-config'

# FIXME: See if vendor is heimdal and version provided is >= HEIMDAL_REQ_VERSION,
# if so: 
# conf.define('USING_SYSTEM_HEIMDAL', 1)

if not conf.CONFIG_SET("USING_SYSTEM_HEIMDAL"):
    conf.CHECK_TYPE('u_char', 'uint8_t')
    conf.CHECK_TYPE('u_int32_t', 'uint32_t')

    conf.CHECK_HEADERS('err.h')

    conf.CHECK_HEADERS('ifaddrs.h')
    conf.CHECK_HEADERS('''crypt.h errno.h inttypes.h netdb.h signal.h sys/bswap.h
                      sys/file.h sys/stropts.h sys/timeb.h sys/times.h sys/uio.h sys/un.h
                  sys/utsname.h time.h timezone.h ttyname.h netinet/in.h
                  netinet/in6.h netinet6/in6.h libintl.h''')

    conf.CHECK_HEADERS('curses.h term.h termcap.h', together=True)

    conf.CHECK_FUNCS('''atexit cgetent getprogname setprogname gethostname
                        putenv rcmd readv sendmsg setitimer strlwr strncasecmp
                strptime strsep strsep_copy    strtok_r strupr swab umask uname unsetenv
                closefrom err warn errx warnx flock writev''')

    conf.CHECK_FUNCS_IN('hstrerror', 'resolv socket nsl', checklibc=True)
    conf.CHECK_FUNCS_IN('''getnameinfo sendmsg socket getipnodebyname gethostent gethostent_r
                           sethostent endhostent getipnodebyaddr freehostent gethostbyname
                           gethostbyname_r gethostbyaddr''',
                        'socket nsl',
                        checklibc=True)

    conf.CHECK_FUNCS_IN('dgettext gettext', 'intl', headers='libintl.h')

    conf.CHECK_FUNCS('iruserok')

    conf.CHECK_FUNCS('bswap16')
    conf.CHECK_FUNCS('bswap32')

    conf.CHECK_TYPE('struct winsize', define='HAVE_STRUCT_WINSIZE', headers='sys/termios.h sys/ioctl.h')
    conf.CHECK_STRUCTURE_MEMBER('struct winsize', 'ws_xpixel',
                        define='HAVE_WS_XPIXEL', headers='sys/termios.h sys/ioctl.h')
    conf.CHECK_STRUCTURE_MEMBER('struct winsize', 'ws_ypixel',
                        define='HAVE_WS_YPIXEL', headers='sys/termios.h sys/ioctl.h')
    conf.DEFINE('HAVE_KRB_STRUCT_WINSIZE', 1)
    conf.DEFINE('VOID_RETSIGTYPE', 1)

    conf.CHECK_VARIABLE('h_errno', headers='netdb.h')

    # strangely enough, we need it with another define too
    conf.CHECK_DECLS('h_errno', headers='netdb.h')

    conf.CHECK_FUNCS_IN('res_search res_nsearch res_ndestroy dns_search dn_expand', 'resolv',
                        checklibc=True, headers='netinet/in.h arpa/nameser.h resolv.h dns.h')
    conf.CHECK_VARIABLE('_res', headers='netinet/in.h arpa/nameser.h resolv.h')
    conf.CHECK_DECLS('_res', headers='netinet/in.h arpa/nameser.h resolv.h')
    conf.CHECK_FUNCS_IN('openpty', 'util', checklibc=True, headers='pty.h util.h libutil.h')

    conf.DEFINE('HAVE_KRB5',1)
    conf.DEFINE('HAVE_GSSAPI',1)

    conf.CHECK_FUNCS('dirfd', headers='dirent.h')
    conf.CHECK_DECLS('dirfd', reverse=True, headers='dirent.h')
    conf.CHECK_STRUCTURE_MEMBER('DIR', 'dd_fd', define='HAVE_DIR_DD_FD',  headers='dirent.h')

    conf.DEFINE('SAMBA4_INTERNAL_HEIMDAL', 1)

    conf.DEFINE('HDB_STRUCT_HAS_HDB_CHECK_S4U2SELF', 1)
else:
    def krb5_config_flags(library, kind):
        return os.popen("%s --%s %s" % (krb5_config_path, kind, library)).read().rstrip()

    conf.SET_TARGET_TYPE('HEIMDAL_GSSAPI', 'SYSLIB')
    conf.env.CCFLAGS_HEIMDAL_GSSAPI = krb5_config_flags("gssapi", "cflags")
    conf.env.LDFLAGS_HEIMDAL_GSSAPI = krb5_config_flags("gssapi", "libs")
    conf.SET_TARGET_TYPE('HEIMDAL_KRB5', 'SYSLIB')
    conf.env.CCFLAGS_HEIMDAL_KRB5 = krb5_config_flags("krb5", "cflags")
    conf.env.LDFLAGS_HEIMDAL_KRB5 = krb5_config_flags("krb5", "libs")
    conf.SET_TARGET_TYPE('HEIMDAL_HDB', 'SYSLIB')
    conf.env.CCFLAGS_HEIMDAL_HDB = krb5_config_flags("krb5", "cflags")
    conf.env.LDFLAGS_HEIMDAL_HDB = krb5_config_flags("krb5", "libs") + " -lhdb"
    conf.SET_TARGET_TYPE('HEIMDAL_HDB_KEYS', 'SYSLIB')
    conf.env.CCFLAGS_HEIMDAL_HDB_KEYS = krb5_config_flags("krb5", "cflags")
    conf.env.LDFLAGS_HEIMDAL_HDB_KEYS = krb5_config_flags("krb5", "libs") + " -lhdb"
    conf.SET_TARGET_TYPE('HEIMDAL_KDC', 'SYSLIB')
    conf.env.CCFLAGS_HEIMDAL_KDC = krb5_config_flags("krb5", "cflags")
    conf.env.LDFLAGS_HEIMDAL_KDC = krb5_config_flags("krb5", "libs") + " -lkdc"

    conf.CHECK_STRUCTURE_MEMBER('struct HDB', 'hdb_check_s4u2self',
                        define='HDB_STRUCT_HAS_HDB_CHECK_S4U2SELF', headers='hdb.h')

    conf.DEFINE('HAVE_KRB5',1)
    conf.DEFINE('HAVE_GSSAPI',1)