[thirdparty/systemd.git] / src / test / test-exec-util.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>

#include "alloc-util.h"
#include "constants.h"
#include "env-util.h"
#include "exec-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "log.h"
#include "path-util.h"
#include "rm-rf.h"
#include "string-util.h"
#include "strv.h"
#include "tests.h"
#include "tmpfile-util.h"

static int here = 0, here2 = 0, here3 = 0;
static void *ignore_stdout_args[] = { &here, &here2, &here3 };

/* noop handlers, just check that arguments are passed correctly */
static int ignore_stdout_func(int fd, void *arg) {
        assert_se(fd >= 0);
        assert_se(arg == &here);
        safe_close(fd);

        return 0;
}
static int ignore_stdout_func2(int fd, void *arg) {
        assert_se(fd >= 0);
        assert_se(arg == &here2);
        safe_close(fd);

        return 0;
}
static int ignore_stdout_func3(int fd, void *arg) {
        assert_se(fd >= 0);
        assert_se(arg == &here3);
        safe_close(fd);

        return 0;
}

static const gather_stdout_callback_t ignore_stdout[] = {
        ignore_stdout_func,
        ignore_stdout_func2,
        ignore_stdout_func3,
};

static void test_execute_directory_one(bool gather_stdout) {
        _cleanup_(rm_rf_physical_and_freep) char *tmp_lo = NULL, *tmp_hi = NULL;
        const char *name, *name2, *name3,
                *overridden, *override,
                *masked, *mask,
                *masked2, *mask2,   /* the mask is non-executable */
                *masked2e, *mask2e; /* the mask is executable */

        log_info("/* %s (%s) */", __func__, gather_stdout ? "gathering stdout" : "asynchronous");

        assert_se(mkdtemp_malloc("/tmp/test-exec-util.lo.XXXXXXX", &tmp_lo) >= 0);
        assert_se(mkdtemp_malloc("/tmp/test-exec-util.hi.XXXXXXX", &tmp_hi) >= 0);

        const char * dirs[] = { tmp_hi, tmp_lo, NULL };

        name = strjoina(tmp_lo, "/script");
        name2 = strjoina(tmp_hi, "/script2");
        name3 = strjoina(tmp_lo, "/useless");
        overridden = strjoina(tmp_lo, "/overridden");
        override = strjoina(tmp_hi, "/overridden");
        masked = strjoina(tmp_lo, "/masked");
        mask = strjoina(tmp_hi, "/masked");
        masked2 = strjoina(tmp_lo, "/masked2");
        mask2 = strjoina(tmp_hi, "/masked2");
        masked2e = strjoina(tmp_lo, "/masked2e");
        mask2e = strjoina(tmp_hi, "/masked2e");

        assert_se(write_string_file(name,
                                    "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name2,
                                    "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(overridden,
                                    "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(override,
                                    "#!/bin/sh\necho 'Executing '$0",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(masked,
                                    "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(masked2,
                                    "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(masked2e,
                                    "#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(symlink("/dev/null", mask) == 0);
        assert_se(touch(mask2) == 0);
        assert_se(touch(mask2e) == 0);
        assert_se(touch(name3) >= 0);

        assert_se(chmod(name, 0755) == 0);
        assert_se(chmod(name2, 0755) == 0);
        assert_se(chmod(overridden, 0755) == 0);
        assert_se(chmod(override, 0755) == 0);
        assert_se(chmod(masked, 0755) == 0);
        assert_se(chmod(masked2, 0755) == 0);
        assert_se(chmod(masked2e, 0755) == 0);
        assert_se(chmod(mask2e, 0755) == 0);

        if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
                return;

        if (gather_stdout)
                execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
        else
                execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);

        assert_se(chdir(tmp_lo) == 0);
        assert_se(access("it_works", F_OK) >= 0);
        assert_se(access("failed", F_OK) < 0);

        assert_se(chdir(tmp_hi) == 0);
        assert_se(access("it_works2", F_OK) >= 0);
        assert_se(access("failed", F_OK) < 0);
}

TEST(execute_directory) {
        test_execute_directory_one(true);
        test_execute_directory_one(false);
}

TEST(execution_order) {
        _cleanup_(rm_rf_physical_and_freep) char *tmp_lo = NULL, *tmp_hi = NULL;
        const char *name, *name2, *name3, *overridden, *override, *masked, *mask;
        const char *output, *t;
        _cleanup_free_ char *contents = NULL;

        assert_se(mkdtemp_malloc("/tmp/test-exec-util-lo.XXXXXXX", &tmp_lo) >= 0);
        assert_se(mkdtemp_malloc("/tmp/test-exec-util-hi.XXXXXXX", &tmp_hi) >= 0);

        const char *dirs[] = { tmp_hi, tmp_lo, NULL };

        output = strjoina(tmp_hi, "/output");

        log_info("/* %s >>%s */", __func__, output);

        /* write files in "random" order */
        name2 = strjoina(tmp_lo, "/90-bar");
        name = strjoina(tmp_hi, "/80-foo");
        name3 = strjoina(tmp_lo, "/last");
        overridden = strjoina(tmp_lo, "/30-override");
        override = strjoina(tmp_hi, "/30-override");
        masked = strjoina(tmp_lo, "/10-masked");
        mask = strjoina(tmp_hi, "/10-masked");

        t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
        assert_se(write_string_file(name, t, WRITE_STRING_FILE_CREATE) == 0);

        t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
        assert_se(write_string_file(name2, t, WRITE_STRING_FILE_CREATE) == 0);

        t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
        assert_se(write_string_file(name3, t, WRITE_STRING_FILE_CREATE) == 0);

        t = strjoina("#!/bin/sh\necho OVERRIDDEN >>", output);
        assert_se(write_string_file(overridden, t, WRITE_STRING_FILE_CREATE) == 0);

        t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
        assert_se(write_string_file(override, t, WRITE_STRING_FILE_CREATE) == 0);

        t = strjoina("#!/bin/sh\necho MASKED >>", output);
        assert_se(write_string_file(masked, t, WRITE_STRING_FILE_CREATE) == 0);

        assert_se(symlink("/dev/null", mask) == 0);

        assert_se(chmod(name, 0755) == 0);
        assert_se(chmod(name2, 0755) == 0);
        assert_se(chmod(name3, 0755) == 0);
        assert_se(chmod(overridden, 0755) == 0);
        assert_se(chmod(override, 0755) == 0);
        assert_se(chmod(masked, 0755) == 0);

        if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
                return;

        execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);

        assert_se(read_full_file(output, &contents, NULL) >= 0);
        ASSERT_STREQ(contents, "30-override\n80-foo\n90-bar\nlast\n");
}

static int gather_stdout_one(int fd, void *arg) {
        char ***s = arg, *t;
        char buf[128] = {};

        assert_se(s);
        assert_se(read(fd, buf, sizeof buf) >= 0);
        safe_close(fd);

        assert_se(t = strndup(buf, sizeof buf));
        assert_se(strv_push(s, t) >= 0);

        return 0;
}
static int gather_stdout_two(int fd, void *arg) {
        char ***s = arg;

        STRV_FOREACH(t, *s)
                assert_se(write(fd, *t, strlen(*t)) == (ssize_t) strlen(*t));
        safe_close(fd);

        return 0;
}
static int gather_stdout_three(int fd, void *arg) {
        char **s = arg;
        char buf[128] = {};

        assert_se(read(fd, buf, sizeof buf - 1) > 0);
        safe_close(fd);
        assert_se(*s = strndup(buf, sizeof buf));

        return 0;
}

const gather_stdout_callback_t gather_stdouts[] = {
        gather_stdout_one,
        gather_stdout_two,
        gather_stdout_three,
};

TEST(stdout_gathering) {
        _cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
        const char *name, *name2, *name3;
        int r;

        char **tmp = NULL; /* this is only used in the forked process, no cleanup here */
        _cleanup_free_ char *output = NULL;

        void* args[] = {&tmp, &tmp, &output};

        assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);

        const char *dirs[] = { tmpdir, NULL };

        /* write files */
        name = strjoina(tmpdir, "/10-foo");
        name2 = strjoina(tmpdir, "/20-bar");
        name3 = strjoina(tmpdir, "/30-last");

        assert_se(write_string_file(name,
                                    "#!/bin/sh\necho a\necho b\necho c\n",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name2,
                                    "#!/bin/sh\necho d\n",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name3,
                                    "#!/bin/sh\nsleep 1",
                                    WRITE_STRING_FILE_CREATE) == 0);

        assert_se(chmod(name, 0755) == 0);
        assert_se(chmod(name2, 0755) == 0);
        assert_se(chmod(name3, 0755) == 0);

        if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
                return;

        r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_stdouts, args, NULL, NULL,
                                EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
        assert_se(r >= 0);

        log_info("got: %s", output);

        ASSERT_STREQ(output, "a\nb\nc\nd\n");
}

TEST(environment_gathering) {
        _cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
        const char *name, *name2, *name3, *old;
        int r;

        char **tmp = NULL; /* this is only used in the forked process, no cleanup here */
        _cleanup_strv_free_ char **env = NULL;

        void* const args[] = { &tmp, &tmp, &env };

        assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);

        const char *dirs[] = { tmpdir, NULL };

        /* write files */
        name = strjoina(tmpdir, "/10-foo");
        name2 = strjoina(tmpdir, "/20-bar");
        name3 = strjoina(tmpdir, "/30-last");

        assert_se(write_string_file(name,
                                    "#!/bin/sh\n"
                                    "echo A=23\n",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name2,
                                    "#!/bin/sh\n"
                                    "echo A=22:$A\n\n\n",            /* substitution from previous generator */
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name3,
                                    "#!/bin/sh\n"
                                    "echo A=$A:24\n"
                                    "echo B=12\n"
                                    "echo C=000\n"
                                    "echo C=001\n"                    /* variable overwriting */
                                     /* various invalid entries */
                                    "echo unset A\n"
                                    "echo unset A=\n"
                                    "echo unset A=B\n"
                                    "echo unset \n"
                                    "echo A B=C\n"
                                    "echo A\n"
                                    /* test variable assignment without newline */
                                    "echo PATH=$PATH:/no/such/file",   /* no newline */
                                    WRITE_STRING_FILE_CREATE) == 0);

        assert_se(chmod(name, 0755) == 0);
        assert_se(chmod(name2, 0755) == 0);
        assert_se(chmod(name3, 0755) == 0);

        /* When booting in containers or without initrd there might not be any PATH in the environment and if
         * there is no PATH /bin/sh built-in PATH may leak and override systemd's default path which is not
         * good. Force our own PATH in environment, to prevent expansion of sh built-in $PATH */
        old = getenv("PATH");
        r = setenv("PATH", "no-sh-built-in-path", 1);
        assert_se(r >= 0);

        if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
                return;

        r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
        assert_se(r >= 0);

        STRV_FOREACH(p, env)
                log_info("got env: \"%s\"", *p);

        ASSERT_STREQ(strv_env_get(env, "A"), "22:23:24");
        ASSERT_STREQ(strv_env_get(env, "B"), "12");
        ASSERT_STREQ(strv_env_get(env, "C"), "001");
        ASSERT_STREQ(strv_env_get(env, "PATH"), "no-sh-built-in-path:/no/such/file");

        /* Now retest with some "default" path passed. */
        env = strv_free(env);
        env = strv_new("PATH=" DEFAULT_PATH_WITHOUT_SBIN);
        assert_se(env);

        r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, env, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
        assert_se(r >= 0);

        STRV_FOREACH(p, env)
                log_info("got env: \"%s\"", *p);

        ASSERT_STREQ(strv_env_get(env, "A"), "22:23:24");
        ASSERT_STREQ(strv_env_get(env, "B"), "12");
        ASSERT_STREQ(strv_env_get(env, "C"), "001");
        ASSERT_STREQ(strv_env_get(env, "PATH"), DEFAULT_PATH_WITHOUT_SBIN ":/no/such/file");

        /* reset environ PATH */
        assert_se(set_unset_env("PATH", old, true) == 0);
}

TEST(error_catching) {
        _cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
        const char *name, *name2, *name3;
        int r;

        assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);

        const char *dirs[] = { tmpdir, NULL };

        /* write files */
        name = strjoina(tmpdir, "/10-foo");
        name2 = strjoina(tmpdir, "/20-bar");
        name3 = strjoina(tmpdir, "/30-last");

        assert_se(write_string_file(name,
                                    "#!/bin/sh\necho a\necho b\necho c\n",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name2,
                                    "#!/bin/sh\nexit 42\n",
                                    WRITE_STRING_FILE_CREATE) == 0);
        assert_se(write_string_file(name3,
                                    "#!/bin/sh\nexit 12",
                                    WRITE_STRING_FILE_CREATE) == 0);

        assert_se(chmod(name, 0755) == 0);
        assert_se(chmod(name2, 0755) == 0);
        assert_se(chmod(name3, 0755) == 0);

        if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
                return;

        r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC,
                                /* callbacks = */ NULL, /* callback_args = */ NULL,
                                /* argv = */ NULL, /* envp = */ NULL, /* flags = */ 0);

        /* we should exit with the error code of the first script that failed */
        assert_se(r == 42);
}

TEST(exec_command_flags_from_strv) {
        ExecCommandFlags flags = 0;
        char **valid_strv = STRV_MAKE("no-env-expand", "no-setuid", "ignore-failure");
        char **invalid_strv = STRV_MAKE("no-env-expand", "no-setuid", "nonexistent-option", "ignore-failure");
        int r;

        r = exec_command_flags_from_strv(valid_strv, &flags);

        assert_se(r == 0);
        assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_ENV_EXPAND));
        assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_SETUID));
        assert_se(FLAGS_SET(flags, EXEC_COMMAND_IGNORE_FAILURE));
        assert_se(!FLAGS_SET(flags, EXEC_COMMAND_FULLY_PRIVILEGED));

        r = exec_command_flags_from_strv(invalid_strv, &flags);

        assert_se(r == -EINVAL);
}

TEST(exec_command_flags_to_strv) {
        _cleanup_strv_free_ char **opts = NULL;

        ASSERT_OK(exec_command_flags_to_strv(EXEC_COMMAND_NO_ENV_EXPAND|EXEC_COMMAND_IGNORE_FAILURE, &opts));
        assert_se(strv_equal(opts, STRV_MAKE("ignore-failure", "no-env-expand")));

        opts = strv_free(opts);

        ASSERT_OK(exec_command_flags_to_strv(0, &opts));
        assert_se(strv_isempty(opts));

        opts = strv_free(opts);

        ASSERT_ERROR(exec_command_flags_to_strv(1U << 20, &opts), EINVAL);
}

DEFINE_TEST_MAIN(LOG_DEBUG);
Commit	Line	Data
	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
	2
	3	#include <stdlib.h>
	4	#include <sys/stat.h>
	5	#include <unistd.h>
	6
	7	#include "alloc-util.h"
	8	#include "constants.h"
	9	#include "env-util.h"
	10	#include "exec-util.h"
	11	#include "fd-util.h"
	12	#include "fileio.h"
	13	#include "fs-util.h"
	14	#include "log.h"
	15	#include "path-util.h"
	16	#include "rm-rf.h"
	17	#include "string-util.h"
	18	#include "strv.h"
	19	#include "tests.h"
	20	#include "tmpfile-util.h"
	21
	22	static int here = 0, here2 = 0, here3 = 0;
	23	static void *ignore_stdout_args[] = { &here, &here2, &here3 };
	24
	25	/* noop handlers, just check that arguments are passed correctly */
	26	static int ignore_stdout_func(int fd, void *arg) {
	27	assert_se(fd >= 0);
	28	assert_se(arg == &here);
	29	safe_close(fd);
	30
	31	return 0;
	32	}
	33	static int ignore_stdout_func2(int fd, void *arg) {
	34	assert_se(fd >= 0);
	35	assert_se(arg == &here2);
	36	safe_close(fd);
	37
	38	return 0;
	39	}
	40	static int ignore_stdout_func3(int fd, void *arg) {
	41	assert_se(fd >= 0);
	42	assert_se(arg == &here3);
	43	safe_close(fd);
	44
	45	return 0;
	46	}
	47
	48	static const gather_stdout_callback_t ignore_stdout[] = {
	49	ignore_stdout_func,
	50	ignore_stdout_func2,
	51	ignore_stdout_func3,
	52	};
	53
	54	static void test_execute_directory_one(bool gather_stdout) {
	55	_cleanup_(rm_rf_physical_and_freep) char tmp_lo = NULL, tmp_hi = NULL;
	56	const char name, name2, *name3,
	57	overridden, override,
	58	masked, mask,
	59	masked2, mask2, /* the mask is non-executable */
	60	masked2e, mask2e; /* the mask is executable */
	61
	62	log_info("/* %s (%s) */", __func__, gather_stdout ? "gathering stdout" : "asynchronous");
	63
	64	assert_se(mkdtemp_malloc("/tmp/test-exec-util.lo.XXXXXXX", &tmp_lo) >= 0);
	65	assert_se(mkdtemp_malloc("/tmp/test-exec-util.hi.XXXXXXX", &tmp_hi) >= 0);
	66
	67	const char * dirs[] = { tmp_hi, tmp_lo, NULL };
	68
	69	name = strjoina(tmp_lo, "/script");
	70	name2 = strjoina(tmp_hi, "/script2");
	71	name3 = strjoina(tmp_lo, "/useless");
	72	overridden = strjoina(tmp_lo, "/overridden");
	73	override = strjoina(tmp_hi, "/overridden");
	74	masked = strjoina(tmp_lo, "/masked");
	75	mask = strjoina(tmp_hi, "/masked");
	76	masked2 = strjoina(tmp_lo, "/masked2");
	77	mask2 = strjoina(tmp_hi, "/masked2");
	78	masked2e = strjoina(tmp_lo, "/masked2e");
	79	mask2e = strjoina(tmp_hi, "/masked2e");
	80
	81	assert_se(write_string_file(name,
	82	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works",
	83	WRITE_STRING_FILE_CREATE) == 0);
	84	assert_se(write_string_file(name2,
	85	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2",
	86	WRITE_STRING_FILE_CREATE) == 0);
	87	assert_se(write_string_file(overridden,
	88	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	89	WRITE_STRING_FILE_CREATE) == 0);
	90	assert_se(write_string_file(override,
	91	"#!/bin/sh\necho 'Executing '$0",
	92	WRITE_STRING_FILE_CREATE) == 0);
	93	assert_se(write_string_file(masked,
	94	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	95	WRITE_STRING_FILE_CREATE) == 0);
	96	assert_se(write_string_file(masked2,
	97	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	98	WRITE_STRING_FILE_CREATE) == 0);
	99	assert_se(write_string_file(masked2e,
	100	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	101	WRITE_STRING_FILE_CREATE) == 0);
	102	assert_se(symlink("/dev/null", mask) == 0);
	103	assert_se(touch(mask2) == 0);
	104	assert_se(touch(mask2e) == 0);
	105	assert_se(touch(name3) >= 0);
	106
	107	assert_se(chmod(name, 0755) == 0);
	108	assert_se(chmod(name2, 0755) == 0);
	109	assert_se(chmod(overridden, 0755) == 0);
	110	assert_se(chmod(override, 0755) == 0);
	111	assert_se(chmod(masked, 0755) == 0);
	112	assert_se(chmod(masked2, 0755) == 0);
	113	assert_se(chmod(masked2e, 0755) == 0);
	114	assert_se(chmod(mask2e, 0755) == 0);
	115
	116	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	117	return;
	118
	119	if (gather_stdout)
	120	execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
	121	else
	122	execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
	123
	124	assert_se(chdir(tmp_lo) == 0);
	125	assert_se(access("it_works", F_OK) >= 0);
	126	assert_se(access("failed", F_OK) < 0);
	127
	128	assert_se(chdir(tmp_hi) == 0);
	129	assert_se(access("it_works2", F_OK) >= 0);
	130	assert_se(access("failed", F_OK) < 0);
	131	}
	132
	133	TEST(execute_directory) {
	134	test_execute_directory_one(true);
	135	test_execute_directory_one(false);
	136	}
	137
	138	TEST(execution_order) {
	139	_cleanup_(rm_rf_physical_and_freep) char tmp_lo = NULL, tmp_hi = NULL;
	140	const char name, name2, name3, overridden, override, masked, *mask;
	141	const char output, t;
	142	_cleanup_free_ char *contents = NULL;
	143
	144	assert_se(mkdtemp_malloc("/tmp/test-exec-util-lo.XXXXXXX", &tmp_lo) >= 0);
	145	assert_se(mkdtemp_malloc("/tmp/test-exec-util-hi.XXXXXXX", &tmp_hi) >= 0);
	146
	147	const char *dirs[] = { tmp_hi, tmp_lo, NULL };
	148
	149	output = strjoina(tmp_hi, "/output");
	150
	151	log_info("/* %s >>%s */", __func__, output);
	152
	153	/* write files in "random" order */
	154	name2 = strjoina(tmp_lo, "/90-bar");
	155	name = strjoina(tmp_hi, "/80-foo");
	156	name3 = strjoina(tmp_lo, "/last");
	157	overridden = strjoina(tmp_lo, "/30-override");
	158	override = strjoina(tmp_hi, "/30-override");
	159	masked = strjoina(tmp_lo, "/10-masked");
	160	mask = strjoina(tmp_hi, "/10-masked");
	161
	162	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	163	assert_se(write_string_file(name, t, WRITE_STRING_FILE_CREATE) == 0);
	164
	165	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	166	assert_se(write_string_file(name2, t, WRITE_STRING_FILE_CREATE) == 0);
	167
	168	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	169	assert_se(write_string_file(name3, t, WRITE_STRING_FILE_CREATE) == 0);
	170
	171	t = strjoina("#!/bin/sh\necho OVERRIDDEN >>", output);
	172	assert_se(write_string_file(overridden, t, WRITE_STRING_FILE_CREATE) == 0);
	173
	174	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	175	assert_se(write_string_file(override, t, WRITE_STRING_FILE_CREATE) == 0);
	176
	177	t = strjoina("#!/bin/sh\necho MASKED >>", output);
	178	assert_se(write_string_file(masked, t, WRITE_STRING_FILE_CREATE) == 0);
	179
	180	assert_se(symlink("/dev/null", mask) == 0);
	181
	182	assert_se(chmod(name, 0755) == 0);
	183	assert_se(chmod(name2, 0755) == 0);
	184	assert_se(chmod(name3, 0755) == 0);
	185	assert_se(chmod(overridden, 0755) == 0);
	186	assert_se(chmod(override, 0755) == 0);
	187	assert_se(chmod(masked, 0755) == 0);
	188
	189	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	190	return;
	191
	192	execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
	193
	194	assert_se(read_full_file(output, &contents, NULL) >= 0);
	195	ASSERT_STREQ(contents, "30-override\n80-foo\n90-bar\nlast\n");
	196	}
	197
	198	static int gather_stdout_one(int fd, void *arg) {
	199	char **s = arg, t;
	200	char buf[128] = {};
	201
	202	assert_se(s);
	203	assert_se(read(fd, buf, sizeof buf) >= 0);
	204	safe_close(fd);
	205
	206	assert_se(t = strndup(buf, sizeof buf));
	207	assert_se(strv_push(s, t) >= 0);
	208
	209	return 0;
	210	}
	211	static int gather_stdout_two(int fd, void *arg) {
	212	char ***s = arg;
	213
	214	STRV_FOREACH(t, *s)
	215	assert_se(write(fd, t, strlen(t)) == (ssize_t) strlen(*t));
	216	safe_close(fd);
	217
	218	return 0;
	219	}
	220	static int gather_stdout_three(int fd, void *arg) {
	221	char **s = arg;
	222	char buf[128] = {};
	223
	224	assert_se(read(fd, buf, sizeof buf - 1) > 0);
	225	safe_close(fd);
	226	assert_se(*s = strndup(buf, sizeof buf));
	227
	228	return 0;
	229	}
	230
	231	const gather_stdout_callback_t gather_stdouts[] = {
	232	gather_stdout_one,
	233	gather_stdout_two,
	234	gather_stdout_three,
	235	};
	236
	237	TEST(stdout_gathering) {
	238	_cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
	239	const char name, name2, *name3;
	240	int r;
	241
	242	char *tmp = NULL; / this is only used in the forked process, no cleanup here */
	243	_cleanup_free_ char *output = NULL;
	244
	245	void* args[] = {&tmp, &tmp, &output};
	246
	247	assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);
	248
	249	const char *dirs[] = { tmpdir, NULL };
	250
	251	/* write files */
	252	name = strjoina(tmpdir, "/10-foo");
	253	name2 = strjoina(tmpdir, "/20-bar");
	254	name3 = strjoina(tmpdir, "/30-last");
	255
	256	assert_se(write_string_file(name,
	257	"#!/bin/sh\necho a\necho b\necho c\n",
	258	WRITE_STRING_FILE_CREATE) == 0);
	259	assert_se(write_string_file(name2,
	260	"#!/bin/sh\necho d\n",
	261	WRITE_STRING_FILE_CREATE) == 0);
	262	assert_se(write_string_file(name3,
	263	"#!/bin/sh\nsleep 1",
	264	WRITE_STRING_FILE_CREATE) == 0);
	265
	266	assert_se(chmod(name, 0755) == 0);
	267	assert_se(chmod(name2, 0755) == 0);
	268	assert_se(chmod(name3, 0755) == 0);
	269
	270	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	271	return;
	272
	273	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_stdouts, args, NULL, NULL,
	274	EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
	275	assert_se(r >= 0);
	276
	277	log_info("got: %s", output);
	278
	279	ASSERT_STREQ(output, "a\nb\nc\nd\n");
	280	}
	281
	282	TEST(environment_gathering) {
	283	_cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
	284	const char name, name2, name3, old;
	285	int r;
	286
	287	char *tmp = NULL; / this is only used in the forked process, no cleanup here */
	288	_cleanup_strv_free_ char **env = NULL;
	289
	290	void* const args[] = { &tmp, &tmp, &env };
	291
	292	assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);
	293
	294	const char *dirs[] = { tmpdir, NULL };
	295
	296	/* write files */
	297	name = strjoina(tmpdir, "/10-foo");
	298	name2 = strjoina(tmpdir, "/20-bar");
	299	name3 = strjoina(tmpdir, "/30-last");
	300
	301	assert_se(write_string_file(name,
	302	"#!/bin/sh\n"
	303	"echo A=23\n",
	304	WRITE_STRING_FILE_CREATE) == 0);
	305	assert_se(write_string_file(name2,
	306	"#!/bin/sh\n"
	307	"echo A=22:$A\n\n\n", /* substitution from previous generator */
	308	WRITE_STRING_FILE_CREATE) == 0);
	309	assert_se(write_string_file(name3,
	310	"#!/bin/sh\n"
	311	"echo A=$A:24\n"
	312	"echo B=12\n"
	313	"echo C=000\n"
	314	"echo C=001\n" /* variable overwriting */
	315	/* various invalid entries */
	316	"echo unset A\n"
	317	"echo unset A=\n"
	318	"echo unset A=B\n"
	319	"echo unset \n"
	320	"echo A B=C\n"
	321	"echo A\n"
	322	/* test variable assignment without newline */
	323	"echo PATH=$PATH:/no/such/file", /* no newline */
	324	WRITE_STRING_FILE_CREATE) == 0);
	325
	326	assert_se(chmod(name, 0755) == 0);
	327	assert_se(chmod(name2, 0755) == 0);
	328	assert_se(chmod(name3, 0755) == 0);
	329
	330	/* When booting in containers or without initrd there might not be any PATH in the environment and if
	331	* there is no PATH /bin/sh built-in PATH may leak and override systemd's default path which is not
	332	* good. Force our own PATH in environment, to prevent expansion of sh built-in $PATH */
	333	old = getenv("PATH");
	334	r = setenv("PATH", "no-sh-built-in-path", 1);
	335	assert_se(r >= 0);
	336
	337	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	338	return;
	339
	340	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
	341	assert_se(r >= 0);
	342
	343	STRV_FOREACH(p, env)
	344	log_info("got env: \"%s\"", *p);
	345
	346	ASSERT_STREQ(strv_env_get(env, "A"), "22:23:24");
	347	ASSERT_STREQ(strv_env_get(env, "B"), "12");
	348	ASSERT_STREQ(strv_env_get(env, "C"), "001");
	349	ASSERT_STREQ(strv_env_get(env, "PATH"), "no-sh-built-in-path:/no/such/file");
	350
	351	/* Now retest with some "default" path passed. */
	352	env = strv_free(env);
	353	env = strv_new("PATH=" DEFAULT_PATH_WITHOUT_SBIN);
	354	assert_se(env);
	355
	356	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, env, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
	357	assert_se(r >= 0);
	358
	359	STRV_FOREACH(p, env)
	360	log_info("got env: \"%s\"", *p);
	361
	362	ASSERT_STREQ(strv_env_get(env, "A"), "22:23:24");
	363	ASSERT_STREQ(strv_env_get(env, "B"), "12");
	364	ASSERT_STREQ(strv_env_get(env, "C"), "001");
	365	ASSERT_STREQ(strv_env_get(env, "PATH"), DEFAULT_PATH_WITHOUT_SBIN ":/no/such/file");
	366
	367	/* reset environ PATH */
	368	assert_se(set_unset_env("PATH", old, true) == 0);
	369	}
	370
	371	TEST(error_catching) {
	372	_cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
	373	const char name, name2, *name3;
	374	int r;
	375
	376	assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);
	377
	378	const char *dirs[] = { tmpdir, NULL };
	379
	380	/* write files */
	381	name = strjoina(tmpdir, "/10-foo");
	382	name2 = strjoina(tmpdir, "/20-bar");
	383	name3 = strjoina(tmpdir, "/30-last");
	384
	385	assert_se(write_string_file(name,
	386	"#!/bin/sh\necho a\necho b\necho c\n",
	387	WRITE_STRING_FILE_CREATE) == 0);
	388	assert_se(write_string_file(name2,
	389	"#!/bin/sh\nexit 42\n",
	390	WRITE_STRING_FILE_CREATE) == 0);
	391	assert_se(write_string_file(name3,
	392	"#!/bin/sh\nexit 12",
	393	WRITE_STRING_FILE_CREATE) == 0);
	394
	395	assert_se(chmod(name, 0755) == 0);
	396	assert_se(chmod(name2, 0755) == 0);
	397	assert_se(chmod(name3, 0755) == 0);
	398
	399	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	400	return;
	401
	402	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC,
	403	/* callbacks = / NULL, / callback_args = */ NULL,
	404	/* argv = / NULL, / envp = / NULL, / flags = */ 0);
	405
	406	/* we should exit with the error code of the first script that failed */
	407	assert_se(r == 42);
	408	}
	409
	410	TEST(exec_command_flags_from_strv) {
	411	ExecCommandFlags flags = 0;
	412	char **valid_strv = STRV_MAKE("no-env-expand", "no-setuid", "ignore-failure");
	413	char **invalid_strv = STRV_MAKE("no-env-expand", "no-setuid", "nonexistent-option", "ignore-failure");
	414	int r;
	415
	416	r = exec_command_flags_from_strv(valid_strv, &flags);
	417
	418	assert_se(r == 0);
	419	assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_ENV_EXPAND));
	420	assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_SETUID));
	421	assert_se(FLAGS_SET(flags, EXEC_COMMAND_IGNORE_FAILURE));
	422	assert_se(!FLAGS_SET(flags, EXEC_COMMAND_FULLY_PRIVILEGED));
	423
	424	r = exec_command_flags_from_strv(invalid_strv, &flags);
	425
	426	assert_se(r == -EINVAL);
	427	}
	428
	429	TEST(exec_command_flags_to_strv) {
	430	_cleanup_strv_free_ char **opts = NULL;
	431
	432	ASSERT_OK(exec_command_flags_to_strv(EXEC_COMMAND_NO_ENV_EXPAND\|EXEC_COMMAND_IGNORE_FAILURE, &opts));
	433	assert_se(strv_equal(opts, STRV_MAKE("ignore-failure", "no-env-expand")));
	434
	435	opts = strv_free(opts);
	436
	437	ASSERT_OK(exec_command_flags_to_strv(0, &opts));
	438	assert_se(strv_isempty(opts));
	439
	440	opts = strv_free(opts);
	441
	442	ASSERT_ERROR(exec_command_flags_to_strv(1U << 20, &opts), EINVAL);
	443	}
	444
	445	DEFINE_TEST_MAIN(LOG_DEBUG);