pam_listfile: add a test for return values

* modules/pam_listfile/tst-pam_listfile-retval.c: New file.
* modules/pam_listfile/Makefile.am (TESTS): Add $(check_PROGRAMS).
(check_PROGRAMS, tst_pam_listfile_retval_LDADD): New variables.

2 files changed, 589 insertions, 1 deletions

diff --git a/modules/pam_listfile/Makefile.am b/modules/pam_listfile/Makefile.am
index c9ba85f6..f840b25d 100644
--- a/modules/pam_listfile/Makefile.am
+++ b/modules/pam_listfile/Makefile.am
@@ -12,7 +12,7 @@ dist_man_MANS = pam_listfile.8
 endif
 XMLS = README.xml pam_listfile.8.xml
 dist_check_SCRIPTS = tst-pam_listfile
-TESTS = $(dist_check_SCRIPTS)
+TESTS = $(dist_check_SCRIPTS) $(check_PROGRAMS)
 
 securelibdir = $(SECUREDIR)
 if HAVE_VENDORDIR
@@ -31,6 +31,9 @@ endif
 securelib_LTLIBRARIES = pam_listfile.la
 pam_listfile_la_LIBADD = $(top_builddir)/libpam/libpam.la
 
+check_PROGRAMS = tst-pam_listfile-retval
+tst_pam_listfile_retval_LDADD = $(top_builddir)/libpam/libpam.la
+
 if ENABLE_REGENERATE_MAN
 dist_noinst_DATA = README
 -include $(top_srcdir)/Make.xml.rules
diff --git a/modules/pam_listfile/tst-pam_listfile-retval.c b/modules/pam_listfile/tst-pam_listfile-retval.c
new file mode 100644
index 00000000..daf4b0ae
--- /dev/null
+++ b/modules/pam_listfile/tst-pam_listfile-retval.c
@@ -0,0 +1,585 @@
+/*
+ * Check pam_listfile return values.
+ *
+ * Copyright (c) 2023 Dmitry V. Levin <ldv@strace.io>
+ */
+
+#include "test_assert.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <pwd.h>
+#include <grp.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <security/pam_appl.h>
+
+#define MODULE_NAME "pam_listfile"
+#define TEST_NAME "tst-" MODULE_NAME "-retval"
+
+static const char service_file[] = TEST_NAME ".service";
+static const char list_file[] = TEST_NAME ".list";
+static struct pam_conv conv;
+
+int
+main(void)
+{
+	pam_handle_t *pamh = NULL;
+	FILE *fp;
+
+	char cwd[PATH_MAX];
+	ASSERT_NE(NULL, getcwd(cwd, sizeof(cwd)));
+
+	struct passwd *pw;
+	ASSERT_NE(NULL, (pw = getpwuid(geteuid())));
+
+	struct group *gr;
+	ASSERT_NE(NULL, (gr = getgrgid(getegid())));
+
+	/* invalid onerr= specified */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr\n"
+			     "account required %s/.libs/%s.so onerr=\n"
+			     "password required %s/.libs/%s.so onerr=0\n"
+			     "session required %s/.libs/%s.so onerr=1\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* unknown option, implicit onerr=fail */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so one=1\n"
+			     "account required %s/.libs/%s.so two=2\n"
+			     "password required %s/.libs/%s.so three=3\n"
+			     "session required %s/.libs/%s.so four=4\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* unknown option, onerr=succeed after unknown option */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so one=1 onerr=succeed\n"
+			     "account required %s/.libs/%s.so two=2 onerr=succeed\n"
+			     "password required %s/.libs/%s.so three=3 onerr=succeed\n"
+			     "session required %s/.libs/%s.so four=4 onerr=succeed\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* unknown option, onerr=succeed before unknown option */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr=succeed one=1\n"
+			     "account required %s/.libs/%s.so onerr=succeed two=2\n"
+			     "password required %s/.libs/%s.so onerr=succeed three=3\n"
+			     "session required %s/.libs/%s.so onerr=succeed four=4\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no item= or invalid item= specified, implicit onerr=fail */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so\n"
+			     "account required %s/.libs/%s.so item\n"
+			     "password required %s/.libs/%s.so item=\n"
+			     "session required %s/.libs/%s.so item=bad\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no item= or invalid item= specified, explicit onerr=fail */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr=fail\n"
+			     "account required %s/.libs/%s.so onerr=fail item\n"
+			     "password required %s/.libs/%s.so onerr=fail item=\n"
+			     "session required %s/.libs/%s.so onerr=fail item=bad\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no item= or invalid item= specified, onerr=succeed */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr=succeed\n"
+			     "account required %s/.libs/%s.so onerr=succeed item\n"
+			     "password required %s/.libs/%s.so onerr=succeed item=\n"
+			     "session required %s/.libs/%s.so onerr=succeed item=bad\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no file= specified, implicit onerr=fail */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user\n"
+			     "account required %s/.libs/%s.so item=group\n"
+			     "password required %s/.libs/%s.so item=ruser\n"
+			     "session required %s/.libs/%s.so item=rhost\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no file= specified, onerr=succeed */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr=succeed item=user\n"
+			     "account required %s/.libs/%s.so onerr=succeed item=group\n"
+			     "password required %s/.libs/%s.so onerr=succeed item=ruser\n"
+			     "session required %s/.libs/%s.so onerr=succeed item=rhost\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no sense= or invalid sense= specified, implicit onerr=fail */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user file=.\n"
+			     "account required %s/.libs/%s.so item=group file=. sense\n"
+			     "password required %s/.libs/%s.so item=shell file=. sense=\n"
+			     "session required %s/.libs/%s.so item=tty file=. sense=bad\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* no sense= or invalid sense= specified, onerr=succeed */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr=succeed item=user file=.\n"
+			     "account required %s/.libs/%s.so onerr=succeed item=group file=. sense\n"
+			     "password required %s/.libs/%s.so onerr=succeed item=shell file=. sense=\n"
+			     "session required %s/.libs/%s.so onerr=succeed item=tty file=. sense=bad\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* invalid apply= specified, implicit onerr=fail */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=ruser file=. sense=allow apply=\n"
+			     "account required %s/.libs/%s.so item=rhost file=. sense=allow apply=\n"
+			     "password required %s/.libs/%s.so item=tty file=. sense=allow apply=@\n"
+			     "session required %s/.libs/%s.so item=tty file=. sense=allow apply=\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* invalid apply= specified, onerr=succeed */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so onerr=succeed item=ruser file=. sense=allow apply=\n"
+			     "account required %s/.libs/%s.so onerr=succeed item=rhost file=. sense=allow apply=\n"
+			     "password required %s/.libs/%s.so onerr=succeed item=tty file=. sense=allow apply=@\n"
+			     "session required %s/.libs/%s.so onerr=succeed item=tty file=. sense=allow apply=\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, "", &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* PAM_IGNORE -> PAM_PERM_DENIED */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=rhost file=. sense=allow apply=:\n"
+			     "account required %s/.libs/%s.so item=tty file=. sense=allow apply=@:\n"
+			     "password required %s/.libs/%s.so item=rhost file=. sense=allow apply=:\n"
+			     "session required %s/.libs/%s.so item=tty file=. sense=allow apply=@:\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_PERM_DENIED, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* item not set, sense=allow */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=rhost file=. sense=allow apply=%s\n"
+			     "account required %s/.libs/%s.so item=tty file=. sense=allow apply=%s\n"
+			     "password required %s/.libs/%s.so item=rhost file=. sense=allow apply=@%s\n"
+			     "session required %s/.libs/%s.so item=tty file=. sense=allow apply=@%s\n",
+			     cwd, MODULE_NAME, pw->pw_name,
+			     cwd, MODULE_NAME, pw->pw_name,
+			     cwd, MODULE_NAME, gr->gr_name,
+			     cwd, MODULE_NAME, gr->gr_name));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_AUTH_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* item not set, sense=deny */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=ruser file=. sense=deny\n"
+			     "account required %s/.libs/%s.so item=rhost file=. sense=deny\n"
+			     "password required %s/.libs/%s.so item=tty file=. sense=deny\n"
+			     "session required %s/.libs/%s.so item=ruser file=. sense=deny\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* file does not exist, not a regular file, or world writable */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user file= sense=allow\n"
+			     "account required %s/.libs/%s.so item=user file=. sense=allow onerr=succeed\n"
+			     "password required %s/.libs/%s.so item=user file=/ sense=allow onerr=succeed\n"
+			     "session required %s/.libs/%s.so item=user file=/dev/null sense=allow onerr=succeed\n",
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME,
+			     cwd, MODULE_NAME));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SERVICE_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* item is listed, sense=allow */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user file=%s sense=allow\n"
+			     "account required %s/.libs/%s.so item=user file=%s sense=allow\n"
+			     "password required %s/.libs/%s.so item=user file=%s sense=allow\n"
+			     "session required %s/.libs/%s.so item=user file=%s sense=allow\n",
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_NE(NULL, fp = fopen(list_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "%s\n", pw->pw_name));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* item is listed, sense=deny */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user file=%s sense=deny\n"
+			     "account required %s/.libs/%s.so item=user file=%s sense=deny\n"
+			     "password required %s/.libs/%s.so item=user file=%s sense=deny\n"
+			     "session required %s/.libs/%s.so item=user file=%s sense=deny\n",
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_NE(NULL, fp = fopen(list_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "%s\n", pw->pw_name));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_AUTH_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* item is not listed, sense=allow */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user file=%s sense=allow\n"
+			     "account required %s/.libs/%s.so item=user file=%s sense=allow\n"
+			     "password required %s/.libs/%s.so item=user file=%s sense=allow\n"
+			     "session required %s/.libs/%s.so item=user file=%s sense=allow\n",
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_NE(NULL, fp = fopen(list_file, "w"));
+	ASSERT_LT(0, fprintf(fp, ":\n"));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_AUTH_ERR, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_PERM_DENIED, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_AUTH_ERR, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	/* item is not listed, sense=deny */
+	ASSERT_NE(NULL, fp = fopen(service_file, "w"));
+	ASSERT_LT(0, fprintf(fp, "#%%PAM-1.0\n"
+			     "auth required %s/.libs/%s.so item=user file=%s sense=deny\n"
+			     "account required %s/.libs/%s.so item=user file=%s sense=deny\n"
+			     "password required %s/.libs/%s.so item=user file=%s sense=deny\n"
+			     "session required %s/.libs/%s.so item=user file=%s sense=deny\n",
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file,
+			     cwd, MODULE_NAME, list_file));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_NE(NULL, fp = fopen(list_file, "w"));
+	ASSERT_LT(0, fprintf(fp, ":\n"));
+	ASSERT_EQ(0, fclose(fp));
+
+	ASSERT_EQ(PAM_SUCCESS,
+		  pam_start_confdir(service_file, pw->pw_name, &conv, ".", &pamh));
+	ASSERT_NE(NULL, pamh);
+	ASSERT_EQ(PAM_SUCCESS, pam_authenticate(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_setcred(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_acct_mgmt(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_chauthtok(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_open_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_close_session(pamh, 0));
+	ASSERT_EQ(PAM_SUCCESS, pam_end(pamh, 0));
+	pamh = NULL;
+
+	ASSERT_EQ(0, unlink(list_file));
+	ASSERT_EQ(0, unlink(service_file));
+
+	return 0;
+}