[PATCH 07/15] unit: Add basic pmksa test

James Prestwood
2024-11-22T15:16:07Z

From: Denis Kenzior <denkenz@gmail.com>

---
.gitignore | 1 +
Makefile.am | 7 +-
unit/test-pmksa.c | 164 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 171 insertions(+), 1 deletion(-)
create mode 100644 unit/test-pmksa.c

diff --git a/.gitignore b/.gitignore
index 8af48c16..5fb9145e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -67,6 +67,7 @@ unit/test-band
unit/test-dpp
unit/test-json
unit/test-nl80211util
+unit/test-pmksa
unit/cert-*.pem
unit/cert-*.csr
unit/cert-*.srl
diff --git a/Makefile.am b/Makefile.am
index 7805ed26..598b8f90 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -438,7 +438,8 @@ unit_tests += unit/test-cmac-aes \
unit/test-ie unit/test-util unit/test-ssid-security \
unit/test-arc4 unit/test-wsc unit/test-eap-mschapv2 \
unit/test-eap-sim unit/test-sae unit/test-p2p unit/test-band \
- unit/test-dpp unit/test-json unit/test-nl80211util
+ unit/test-dpp unit/test-json unit/test-nl80211util \
+ unit/test-pmksa
endif

if CLIENT
@@ -594,6 +595,10 @@ unit_test_nl80211util_SOURCES = unit/test-nl80211util.c \
src/ie.h src/ie.c \
src/util.h src/util.c
unit_test_nl80211util_LDADD = $(ell_ldadd)
+
+unit_test_pmksa_SOURCES = unit/test-pmksa.c src/pmksa.c src/pmksa.h \
+ src/module.h src/util.h
+unit_test_pmksa_LDADD = $(ell_ldadd)
endif

if CLIENT
diff --git a/unit/test-pmksa.c b/unit/test-pmksa.c
new file mode 100644
index 00000000..4c7111aa
--- /dev/null
+++ b/unit/test-pmksa.c
@@ -0,0 +1,164 @@
+/*
+ *
+ * Wireless daemon for Linux
+ *
+ * Copyright (C) 2023 Cruise LLC. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <ell/ell.h>
+
+#include "src/module.h"
+#include "src/util.h"
+#include "src/pmksa.h"
+
+static bool verbose = false;
+static struct l_settings *config;
+extern struct iwd_module_desc __start___iwd_module[];
+extern struct iwd_module_desc __stop___iwd_module[];
+/* There's a single module compiled in, so it will be the pmksa one */
+static struct iwd_module_desc *pmksa = __start___iwd_module;
+
+static void print_cache()
+{
+ uint32_t used;
+ struct pmksa **entries = __pmksa_cache_get_all(&used);
+ uint32_t i;
+
+ for (i = 0; i < used; i++) {
+ struct pmksa *pmksa = entries[i];
+
+ fprintf(stderr, "%02u aa "MAC" spa "MAC" expiration: %"
+ PRIu64"\n", i,
+ MAC_STR(pmksa->aa), MAC_STR(pmksa->spa),
+ pmksa->expiration);
+ }
+}
+
+static struct pmksa *make_pmksa()
+{
+ static uint32_t counter = 0xabcdef00;
+ struct pmksa *pmksa = l_new(struct pmksa, 1);
+
+ memcpy(pmksa->aa, &counter, sizeof(counter));
+ counter += 1;
+ memcpy(pmksa->spa, &counter, sizeof(counter));
+ counter += 1;
+
+ pmksa->ssid_len = 6;
+ pmksa->ssid[0] = 'F';
+ pmksa->ssid[1] = 'o';
+ pmksa->ssid[2] = 'o';
+ pmksa->ssid[3] = 'b';
+ pmksa->ssid[4] = 'a';
+ pmksa->ssid[5] = 'r';
+
+ pmksa->akm = 0x4;
+
+ return pmksa;
+}
+
+static void test_pmksa(const void *data)
+{
+ struct pmksa *p;
+ struct pmksa **entries;
+ uint32_t used;
+
+ config = l_settings_new();
+ l_settings_set_uint(config, "PMKSA", "Capacity", 7);
+ __pmksa_set_config(config);
+ pmksa->init();
+
+ p = make_pmksa();
+ p->expiration = 20;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 15;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 32;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 48;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 102;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 55;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 41;
+ assert(!pmksa_cache_put(p));
+
+ p = make_pmksa();
+ p->expiration = 66;
+ assert(!pmksa_cache_put(p));
+
+ if (verbose)
+ print_cache();
+
+ entries = __pmksa_cache_get_all(&used);
+ assert(used == 7);
+ assert(entries[0]->expiration == 20);
+
+ /* Reverse spa and aa */
+ p = pmksa_cache_get(entries[0]->aa, entries[0]->spa,
+ entries[0]->ssid, entries[0]->ssid_len,
+ 0xff);
+ assert(!p);
+
+ p = pmksa_cache_get(entries[0]->spa, entries[0]->aa,
+ entries[0]->ssid, entries[0]->ssid_len,
+ 0xff);
+ assert(p);
+ l_free(p);
+
+ entries = __pmksa_cache_get_all(&used);
+ assert(used == 6);
+ assert(entries[0]->expiration == 32);
+
+ assert(pmksa_cache_expire(48) == 3);
+ entries = __pmksa_cache_get_all(&used);
+ assert(used == 3);
+ assert(entries[0]->expiration == 55);
+
+ pmksa->exit();
+ l_settings_free(config);
+}
+
+int main(int argc, char *argv[])
+{
+ l_test_init(&argc, &argv);
+
+ l_test_add("PMKSA/basics", test_pmksa, NULL);
+
+ return l_test_run();
+}
--
2.34.1