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-rw-r--r--src/Makefile.in1
-rw-r--r--src/configure.in1
-rw-r--r--src/plugins/hostrealm/test/Makefile.in21
-rw-r--r--src/plugins/hostrealm/test/deps14
-rw-r--r--src/plugins/hostrealm/test/hostrealm_test.exports2
-rw-r--r--src/plugins/hostrealm/test/main.c197
-rw-r--r--src/tests/Makefile.in11
-rw-r--r--src/tests/hrealm.c99
-rw-r--r--src/tests/t_hostrealm.py128
9 files changed, 471 insertions, 3 deletions
diff --git a/src/Makefile.in b/src/Makefile.in
index 0000510d42..2f4e6fcd0b 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -10,6 +10,7 @@ mydir=.
SUBDIRS=util include lib \
@sam2_plugin@ \
plugins/kadm5_hook/test \
+ plugins/hostrealm/test \
plugins/localauth/test \
plugins/pwqual/test \
plugins/kdb/db2 \
diff --git a/src/configure.in b/src/configure.in
index b2802baee9..81c684d16d 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -1357,6 +1357,7 @@ dnl ccapi ccapi/lib ccapi/lib/unix ccapi/server ccapi/server/unix ccapi/test
kdc slave config-files build-tools man doc include
+ plugins/hostrealm/test
plugins/locate/python
plugins/localauth/test
plugins/kadm5_hook/test
diff --git a/src/plugins/hostrealm/test/Makefile.in b/src/plugins/hostrealm/test/Makefile.in
new file mode 100644
index 0000000000..2d9c38e32a
--- /dev/null
+++ b/src/plugins/hostrealm/test/Makefile.in
@@ -0,0 +1,21 @@
+mydir=plugins$(S)hostrealm$(S)test
+BUILDTOP=$(REL)..$(S)..$(S)..
+
+LIBBASE=hostrealm_test
+LIBMAJOR=0
+LIBMINOR=0
+RELDIR=../plugins/hostrealm/test
+# Depends on libkrb5
+SHLIB_EXPDEPS= $(KRB5_DEPLIB)
+SHLIB_EXPLIBS= $(KRB5_LIB)
+
+STLIBOBJS=main.o
+
+SRCS= $(srcdir)/main.c
+
+all-unix:: all-libs
+install-unix::
+clean-unix:: clean-libs clean-libobjs
+
+@libnover_frag@
+@libobj_frag@
diff --git a/src/plugins/hostrealm/test/deps b/src/plugins/hostrealm/test/deps
new file mode 100644
index 0000000000..d91fef860d
--- /dev/null
+++ b/src/plugins/hostrealm/test/deps
@@ -0,0 +1,14 @@
+#
+# Generated makefile dependencies follow.
+#
+main.so main.po $(OUTPRE)main.$(OBJEXT): $(BUILDTOP)/include/autoconf.h \
+ $(BUILDTOP)/include/krb5/krb5.h $(BUILDTOP)/include/osconf.h \
+ $(BUILDTOP)/include/profile.h $(COM_ERR_DEPS) $(top_srcdir)/include/k5-buf.h \
+ $(top_srcdir)/include/k5-err.h $(top_srcdir)/include/k5-gmt_mktime.h \
+ $(top_srcdir)/include/k5-int-pkinit.h $(top_srcdir)/include/k5-int.h \
+ $(top_srcdir)/include/k5-platform.h $(top_srcdir)/include/k5-plugin.h \
+ $(top_srcdir)/include/k5-thread.h $(top_srcdir)/include/k5-trace.h \
+ $(top_srcdir)/include/krb5.h $(top_srcdir)/include/krb5/authdata_plugin.h \
+ $(top_srcdir)/include/krb5/hostrealm_plugin.h $(top_srcdir)/include/krb5/plugin.h \
+ $(top_srcdir)/include/port-sockets.h $(top_srcdir)/include/socket-utils.h \
+ main.c
diff --git a/src/plugins/hostrealm/test/hostrealm_test.exports b/src/plugins/hostrealm/test/hostrealm_test.exports
new file mode 100644
index 0000000000..1adb759285
--- /dev/null
+++ b/src/plugins/hostrealm/test/hostrealm_test.exports
@@ -0,0 +1,2 @@
+hostrealm_test1_initvt
+hostrealm_test2_initvt
diff --git a/src/plugins/hostrealm/test/main.c b/src/plugins/hostrealm/test/main.c
new file mode 100644
index 0000000000..3b36dce77d
--- /dev/null
+++ b/src/plugins/hostrealm/test/main.c
@@ -0,0 +1,197 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* plugins/hostrealm/test/main.c - test module for host-realm interface */
+/*
+ * Copyright (C) 2010,2013 by the Massachusetts Institute of Technology.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This file implements two hostrealm modules named "test1" and "test2".
+ *
+ * The first module returns multi-element lists. For host_realm and
+ * fallback_realm, it returns a list of the host's components in order. For
+ * default_realm, it returns a list containing "one" and "two".
+ *
+ * The second module tests error handling. For host_realm and fallback_realm,
+ * it returns a fatal error on hosts beginning with 'z', a list containing "a"
+ * for hosts beginning with 'a', and passes control to later modules otherwise.
+ * For default_realm, it returns a fatal error.
+ */
+
+#include <k5-int.h>
+#include <krb5/hostrealm_plugin.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+static krb5_error_code
+split_comps(krb5_context context, krb5_hostrealm_moddata data,
+ const char *host, char ***realms_out)
+{
+ krb5_error_code ret;
+ const char *p, *q;
+ char *word = NULL, **list = NULL, **newptr;
+ size_t count = 0;
+
+ *realms_out = NULL;
+ if (*host == '\0')
+ return KRB5_PLUGIN_NO_HANDLE;
+ p = host;
+ while (TRUE) {
+ q = strchr(p, '.');
+ word = (q == NULL) ? strdup(p) : k5memdup0(p, q - p, &ret);
+ if (word == NULL)
+ goto oom;
+ newptr = realloc(list, (count + 2) * sizeof(*list));
+ if (newptr == NULL)
+ goto oom;
+ list = newptr;
+ list[count++] = word;
+ list[count] = NULL;
+ word = NULL;
+ if (q == NULL)
+ break;
+ p = q + 1;
+ }
+ *realms_out = list;
+ return 0;
+
+oom:
+ krb5_free_host_realm(context, list);
+ free(word);
+ return ENOMEM;
+}
+
+static krb5_error_code
+multi_defrealm(krb5_context context, krb5_hostrealm_moddata data,
+ char ***realms_out)
+{
+ char **list = NULL, *one = NULL, *two = NULL;
+
+ *realms_out = NULL;
+ one = strdup("one");
+ if (one == NULL)
+ goto oom;
+ two = strdup("two");
+ if (two == NULL)
+ goto oom;
+ list = calloc(3, sizeof(*list));
+ if (list == NULL)
+ goto oom;
+ list[0] = one;
+ list[1] = two;
+ list[2] = NULL;
+ *realms_out = list;
+ return 0;
+
+oom:
+ free(one);
+ free(two);
+ free(list);
+ return ENOMEM;
+}
+
+static krb5_error_code
+maybe_realm(krb5_context context, krb5_hostrealm_moddata data,
+ const char *host, char ***realms_out)
+{
+ char **list, *a;
+
+ *realms_out = NULL;
+ if (*host == 'z')
+ return KRB5_ERR_NO_SERVICE;
+ if (*host != 'a')
+ return KRB5_PLUGIN_NO_HANDLE;
+ a = strdup("a");
+ if (a == NULL)
+ return ENOMEM;
+ list = calloc(2, sizeof(*list));
+ if (list == NULL) {
+ free(a);
+ return ENOMEM;
+ }
+ list[0] = a;
+ list[1] = NULL;
+ *realms_out = list;
+ return 0;
+}
+
+static krb5_error_code
+error(krb5_context context, krb5_hostrealm_moddata data, char ***realms_out)
+{
+ *realms_out = NULL;
+ return KRB5_ERR_NO_SERVICE;
+}
+
+static void
+free_realmlist(krb5_context context, krb5_hostrealm_moddata data,
+ char **list)
+{
+ krb5_free_host_realm(context, list);
+}
+
+krb5_error_code
+hostrealm_test1_initvt(krb5_context context, int maj_ver, int min_ver,
+ krb5_plugin_vtable vtable);
+krb5_error_code
+hostrealm_test2_initvt(krb5_context context, int maj_ver, int min_ver,
+ krb5_plugin_vtable vtable);
+
+krb5_error_code
+hostrealm_test1_initvt(krb5_context context, int maj_ver, int min_ver,
+ krb5_plugin_vtable vtable)
+{
+ krb5_hostrealm_vtable vt;
+
+ if (maj_ver != 1)
+ return KRB5_PLUGIN_VER_NOTSUPP;
+ vt = (krb5_hostrealm_vtable)vtable;
+ vt->name = "test1";
+ vt->host_realm = split_comps;
+ vt->fallback_realm = split_comps;
+ vt->default_realm = multi_defrealm;
+ vt->free_list = free_realmlist;
+ return 0;
+}
+
+krb5_error_code
+hostrealm_test2_initvt(krb5_context context, int maj_ver, int min_ver,
+ krb5_plugin_vtable vtable)
+{
+ krb5_hostrealm_vtable vt;
+
+ if (maj_ver != 1)
+ return KRB5_PLUGIN_VER_NOTSUPP;
+ vt = (krb5_hostrealm_vtable)vtable;
+ vt->name = "test2";
+ vt->host_realm = maybe_realm;
+ vt->default_realm = error;
+ vt->free_list = free_realmlist;
+ return 0;
+}
diff --git a/src/tests/Makefile.in b/src/tests/Makefile.in
index 5828a90212..3525b48ad9 100644
--- a/src/tests/Makefile.in
+++ b/src/tests/Makefile.in
@@ -26,6 +26,9 @@ gcred: gcred.o $(KRB5_BASE_DEPLIBS)
hist: hist.o $(KDB5_DEPLIBS) $(KADMSRV_DEPLIBS) $(KRB5_BASE_DEPLIBS)
$(CC_LINK) -o $@ hist.o $(KDB5_LIBS) $(KADMSRV_LIBS) $(KRB5_BASE_LIBS)
+hrealm: hrealm.o $(KRB5_BASE_DEPLIBS)
+ $(CC_LINK) -o $@ hrealm.o $(KRB5_BASE_LIBS)
+
kdbtest: kdbtest.o $(KDB5_DEPLIBS) $(KADMSRV_DEPLIBS) $(KRB5_BASE_DEPLIBS)
$(CC_LINK) -o $@ kdbtest.o $(KDB5_LIBS) $(KADMSRV_LIBS) \
$(KRB5_BASE_LIBS)
@@ -84,7 +87,8 @@ kdb_check: kdc.conf krb5.conf
$(RUN_SETUP) $(VALGRIND) ../kadmin/dbutil/kdb5_util $(KADMIN_OPTS) destroy -f
$(RM) $(TEST_DB)* stash_file
-check-pytests:: gcred hist kdbtest plugorder responder t_init_creds t_localauth
+check-pytests:: gcred hist hrealm kdbtest plugorder responder
+check-pytests:: t_init_creds t_localauth
$(RUNPYTEST) $(srcdir)/t_general.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_dump.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_iprop.py $(PYTESTFLAGS)
@@ -95,6 +99,7 @@ check-pytests:: gcred hist kdbtest plugorder responder t_init_creds t_localauth
$(RUNPYTEST) $(srcdir)/t_localauth.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_kadm5_hook.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_pwqual.py $(PYTESTFLAGS)
+ $(RUNPYTEST) $(srcdir)/t_hostrealm.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_kdb_locking.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_keyrollover.py $(PYTESTFLAGS)
$(RUNPYTEST) $(srcdir)/t_renew.py $(PYTESTFLAGS)
@@ -115,6 +120,6 @@ check-pytests:: gcred hist kdbtest plugorder responder t_init_creds t_localauth
$(RUNPYTEST) $(srcdir)/t_cve-2013-1417.py $(PYTESTFLAGS)
clean::
- $(RM) gcred hist kdbtest plugorder responder t_init_creds t_localauth
- $(RM) krb5.conf kdc.conf
+ $(RM) gcred hist hrealm kdbtest plugorder responder
+ $(RM) t_init_creds t_localauth krb5.conf kdc.conf
$(RM) -rf kdc_realm/sandbox ldap
diff --git a/src/tests/hrealm.c b/src/tests/hrealm.c
new file mode 100644
index 0000000000..f464c8fd66
--- /dev/null
+++ b/src/tests/hrealm.c
@@ -0,0 +1,99 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* tests/hrealm.c - Test harness for host-realm interfaces */
+/*
+ * Copyright (C) 2012 by the Massachusetts Institute of Technology.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This program is intended to be run from a python script as:
+ *
+ * hrealm -h|-f|-d [hostname]
+ *
+ * Calls krb5_get_host_realm, krb5_get_fallback_host_realm, or
+ * krb5_default_realm depending on the option given. For the first two
+ * choices, hostname or NULL is passed as the argument. The results are
+ * displayed one per line.
+ */
+
+#include "k5-int.h"
+
+static krb5_context ctx;
+
+static void
+check(krb5_error_code code)
+{
+ const char *errmsg;
+
+ if (code) {
+ errmsg = krb5_get_error_message(ctx, code);
+ fprintf(stderr, "%s\n", errmsg);
+ krb5_free_error_message(ctx, errmsg);
+ exit(1);
+ }
+}
+
+static void
+display(char **realms)
+{
+ while (realms != NULL && *realms != NULL)
+ printf("%s\n", *realms++);
+}
+
+int
+main(int argc, char **argv)
+{
+ krb5_data d;
+ char **realms, *realm;
+
+ check(krb5_init_context(&ctx));
+
+ /* Parse arguments. */
+ if (argc < 2 || argc > 3)
+ abort();
+
+ if (strcmp(argv[1], "-d") == 0) {
+ check(krb5_get_default_realm(ctx, &realm));
+ printf("%s\n", realm);
+ krb5_free_default_realm(ctx, realm);
+ } else if (strcmp(argv[1], "-h") == 0) {
+ check(krb5_get_host_realm(ctx, argv[2], &realms));
+ display(realms);
+ krb5_free_host_realm(ctx, realms);
+ } else if (strcmp(argv[1], "-f") == 0) {
+ assert(argc == 3);
+ d = string2data(argv[2]);
+ check(krb5_get_fallback_host_realm(ctx, &d, &realms));
+ display(realms);
+ krb5_free_host_realm(ctx, realms);
+ } else {
+ abort();
+ }
+ krb5_free_context(ctx);
+ return 0;
+}
diff --git a/src/tests/t_hostrealm.py b/src/tests/t_hostrealm.py
new file mode 100644
index 0000000000..76b282d2ac
--- /dev/null
+++ b/src/tests/t_hostrealm.py
@@ -0,0 +1,128 @@
+#!/usr/bin/python
+from k5test import *
+
+plugin = os.path.join(buildtop, "plugins", "hostrealm", "test",
+ "hostrealm_test.so")
+
+# Disable the "dns" module (we can't easily test TXT lookups) and
+# arrange the remaining modules in an order which makes sense for most
+# tests.
+conf = {'plugins': {'hostrealm': {'module': ['test1:' + plugin,
+ 'test2:' + plugin],
+ 'enable_only': ['test2', 'profile',
+ 'domain', 'test1']}},
+ 'domain_realm': {'.x': 'DOTMATCH', 'x': 'MATCH', '.1': 'NUMMATCH'}}
+realm = K5Realm(krb5_conf=conf, create_kdb=False)
+
+def test(realm, args, expected_realms, msg, env=None):
+ out = realm.run(['./hrealm'] + args, env=env)
+ if out.split('\n') != expected_realms + ['']:
+ fail(msg)
+
+def test_error(realm, args, expected_error, msg, env=None):
+ out = realm.run(['./hrealm'] + args, env=env, expected_code=1)
+ if expected_error not in out:
+ fail(msg)
+
+def testh(realm, host, expected_realms, msg, env=None):
+ test(realm, ['-h', host], expected_realms, msg, env=env)
+def testf(realm, host, expected_realms, msg, env=None):
+ test(realm, ['-f', host], expected_realms, msg, env=env)
+def testd(realm, expected_realm, msg, env=None):
+ test(realm, ['-d'], [expected_realm], msg, env=env)
+def testh_error(realm, host, expected_error, msg, env=None):
+ test_error(realm, ['-h', host], expected_error, msg, env=env)
+def testf_error(realm, host, expected_error, msg, env=None):
+ test_error(realm, ['-f', host], expected_error, msg, env=env)
+def testd_error(realm, expected_error, msg, env=None):
+ test_error(realm, ['-d'], expected_error, msg, env=env)
+
+###
+### krb5_get_host_realm tests
+###
+
+# The test2 module returns a fatal error on hosts beginning with 'z',
+# and an answer on hosts begining with 'a'.
+testh_error(realm, 'zoo', 'service not available', 'host_realm test2 z')
+testh(realm, 'abacus', ['a'], 'host_realm test2 a')
+
+# The profile module gives answers for hostnames equal to or ending in
+# 'X', due to [domain_realms]. There is also an entry for hostnames
+# ending in '1', but hostnames which appear to be IP or IPv6 addresses
+# should instead fall through to test1.
+testh(realm, 'x', ['MATCH'], 'host_realm profile x')
+testh(realm, '.x', ['DOTMATCH'], 'host_realm profile .x')
+testh(realm, 'b.x', ['DOTMATCH'], 'host_realm profile b.x')
+testh(realm, '.b.c.x', ['DOTMATCH'], 'host_realm profile .b.c.x')
+testh(realm, 'b.1', ['NUMMATCH'], 'host_realm profile b.1')
+testh(realm, '4.3.2.1', ['4', '3', '2', '1'], 'host_realm profile 4.3.2.1')
+testh(realm, 'b:c.x', ['b:c', 'x'], 'host_realm profile b:c.x')
+# hostname cleaning should convert "X." to "x" before matching.
+testh(realm, 'X.', ['MATCH'], 'host_realm profile X.')
+
+# The test1 module returns a list of the hostname components.
+testh(realm, 'b.c.d', ['b', 'c', 'd'], 'host_realm test1')
+
+# If no module returns a result, we should get the referral realm.
+testh(realm, '', [''], 'host_realm referral realm')
+
+###
+### krb5_get_fallback_host_realm tests
+###
+
+# Return a special environment with realm_try_domains set to n.
+def try_env(realm, testname, n):
+ conf = {'libdefaults': {'realm_try_domains': str(n)}}
+ return realm.special_env(testname, False, krb5_conf=conf)
+
+# The domain module will answer with the uppercased parent domain,
+# with no special configuration.
+testf(realm, 'a.b.c', ['B.C'], 'fallback_realm domain a.b.c')
+
+# With realm_try_domains = 0, the hostname itself will be looked up as
+# a realm and returned if found.
+try0 = try_env(realm, 'try0', 0)
+testf(realm, 'krbtest.com', ['KRBTEST.COM'], 'fallback_realm try0', env=try0)
+testf(realm, 'a.b.krbtest.com', ['B.KRBTEST.COM'],
+ 'fallback_realm try0 grandparent', env=try0)
+testf(realm, 'a.b.c', ['B.C'], 'fallback_realm try0 nomatch', env=try0)
+
+# With realm_try_domains = 2, the parent and grandparent will be
+# checked as well, but it stops there.
+try2 = try_env(realm, 'try2', 2)
+testf(realm, 'krbtest.com', ['KRBTEST.COM'], 'fallback_realm try2', env=try2)
+testf(realm, 'a.b.krbtest.com', ['KRBTEST.COM'],
+ 'fallback_realm try2 grandparent', env=try2)
+testf(realm, 'a.b.c.krbtest.com', ['B.C.KRBTEST.COM'],
+ 'fallback_realm try2 great-grandparent', env=try2)
+
+# The test1 module answers with a list of components. Use an IPv4
+# address to bypass the domain module.
+testf(realm, '1.2.3.4', ['1', '2', '3', '4'], 'fallback_realm test1')
+
+# If no module answers, the default realm is returned. The test2
+# module returns an error when we try to look that up.
+testf_error(realm, '', 'service not available', 'fallback_realm default')
+
+###
+### krb5_get_default_realm tests
+###
+
+# The test2 module returns an error.
+testd_error(realm, 'service not available', 'default_realm test2')
+
+# The profile module returns the default realm from the profile.
+# Disable test2 to expose this behavior.
+disable_conf = {'plugins': {'hostrealm': {'disable': 'test2'}}}
+notest2 = realm.special_env('notest2', False, krb5_conf=disable_conf)
+testd(realm, 'KRBTEST.COM', 'default_realm profile', env=notest2)
+
+# The test1 module returns a list of two realms, of which we can only
+# see the first. Remove the profile default_realm setting to expose
+# this behavior.
+remove_default = {'libdefaults': {'default_realm': None}}
+nodefault_conf = dict(disable_conf.items() + remove_default.items())
+nodefault = realm.special_env('nodefault', False, krb5_conf=nodefault_conf)
+testd(realm, 'one', 'default_realm test1', env=nodefault)
+
+success('hostrealm interface tests')