pcmk_daemon_user_test.c

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/*
 * Copyright 2022 the Pacemaker project contributors
 *
 * The version control history for this file may have further details.
 *
 * This source code is licensed under the GNU General Public License version 2
 * or later (GPLv2+) WITHOUT ANY WARRANTY.
 */

#include <crm_internal.h>

#include <crm/common/unittest_internal.h>

#include "crmcommon_private.h"
#include "mock_private.h"

#include <pwd.h>
#include <sys/types.h>

static void
no_matching_pwent(void **state)
{
    uid_t uid;
    gid_t gid;

    // Set getpwnam_r() return value and result parameter
    pcmk__mock_getpwnam_r = true;

    expect_string(__wrap_getpwnam_r, name, "hacluster");
    expect_any(__wrap_getpwnam_r, pwd);
    expect_any(__wrap_getpwnam_r, buf);
    expect_value(__wrap_getpwnam_r, buflen, PCMK__PW_BUFFER_LEN);
    expect_any(__wrap_getpwnam_r, result);
    will_return(__wrap_getpwnam_r, ENOENT);
    will_return(__wrap_getpwnam_r, NULL);

    assert_int_equal(pcmk_daemon_user(&uid, &gid), -ENOENT);

    pcmk__mock_getpwnam_r = false;
}

static void
entry_found(void **state)
{
    uid_t uid;
    gid_t gid;

    /* We don't care about any of the other fields of the password entry, so just
     * leave them blank.
     */
    struct passwd returned_ent = { .pw_uid = 1000, .pw_gid = 1000 };

    /* Test getpwnam_r returning a valid passwd entry, but we don't pass uid or gid. */

    // Set getpwnam_r() return value and result parameter
    pcmk__mock_getpwnam_r = true;

    expect_string(__wrap_getpwnam_r, name, "hacluster");
    expect_any(__wrap_getpwnam_r, pwd);
    expect_any(__wrap_getpwnam_r, buf);
    expect_value(__wrap_getpwnam_r, buflen, PCMK__PW_BUFFER_LEN);
    expect_any(__wrap_getpwnam_r, result);
    will_return(__wrap_getpwnam_r, 0);
    will_return(__wrap_getpwnam_r, &returned_ent);

    assert_int_equal(pcmk_daemon_user(NULL, NULL), 0);

    /* Test getpwnam_r returning a valid passwd entry, and we do pass uid and gid. */

    /* We don't need to call will_return() again because pcmk_daemon_user()
     * will have cached the uid/gid from the previous call and won't make
     * another call to getpwnam_r().
     */
    assert_int_equal(pcmk_daemon_user(&uid, &gid), 0);
    assert_int_equal(uid, 1000);
    assert_int_equal(gid, 1000);

    pcmk__mock_getpwnam_r = false;
}

PCMK__UNIT_TEST(NULL, NULL,
                cmocka_unit_test(no_matching_pwent),
                cmocka_unit_test(entry_found))