[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 "errno-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("test", dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL | EXEC_DIR_IGNORE_ERRORS);
        else
                execute_directories("test", 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(__func__,
                            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(__func__,
                                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(__func__,
                                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(__func__,
                                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(__func__,
                                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
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
89711996	2
fa34123c	3	#include <stdlib.h>
89711996	4	#include <sys/stat.h>
89711996 ZJS	5	#include <unistd.h>
89711996 ZJS	6
c6e47247	7	#include "alloc-util.h"
28db6fbf	8	#include "constants.h"
3303d1b2	9	#include "env-util.h"
87fbd333	10	#include "errno-util.h"
89711996	11	#include "exec-util.h"
c6e47247	12	#include "fd-util.h"
89711996 ZJS	13	#include "fileio.h"
	14	#include "fs-util.h"
	15	#include "log.h"
78ec1bb4	16	#include "path-util.h"
89711996 ZJS	17	#include "rm-rf.h"
89711996 ZJS	18	#include "string-util.h"
c6e47247	19	#include "strv.h"
6d7c4033	20	#include "tests.h"
84e8602d	21	#include "tmpfile-util.h"
89711996	22
c6e47247	23	static int here = 0, here2 = 0, here3 = 0;
9b1c5610	24	static void *ignore_stdout_args[] = { &here, &here2, &here3 };
c6e47247 ZJS	25
	26	/* noop handlers, just check that arguments are passed correctly */
	27	static int ignore_stdout_func(int fd, void *arg) {
f21b863e YW	28	assert_se(fd >= 0);
f21b863e YW	29	assert_se(arg == &here);
c6e47247 ZJS	30	safe_close(fd);
	31
	32	return 0;
	33	}
	34	static int ignore_stdout_func2(int fd, void *arg) {
f21b863e YW	35	assert_se(fd >= 0);
f21b863e YW	36	assert_se(arg == &here2);
c6e47247 ZJS	37	safe_close(fd);
	38
	39	return 0;
	40	}
	41	static int ignore_stdout_func3(int fd, void *arg) {
f21b863e YW	42	assert_se(fd >= 0);
f21b863e YW	43	assert_se(arg == &here3);
c6e47247 ZJS	44	safe_close(fd);
	45
	46	return 0;
	47	}
	48
	49	static const gather_stdout_callback_t ignore_stdout[] = {
	50	ignore_stdout_func,
	51	ignore_stdout_func2,
	52	ignore_stdout_func3,
	53	};
	54
4f7452a8	55	static void test_execute_directory_one(bool gather_stdout) {
84e8602d	56	_cleanup_(rm_rf_physical_and_freep) char tmp_lo = NULL, tmp_hi = NULL;
f66137fb ZJS	57	const char name, name2, *name3,
	58	overridden, override,
	59	masked, mask,
	60	masked2, mask2, /* the mask is non-executable */
	61	masked2e, mask2e; /* the mask is executable */
89711996	62
c6e47247 ZJS	63	log_info("/* %s (%s) */", __func__, gather_stdout ? "gathering stdout" : "asynchronous");
c6e47247 ZJS	64
84e8602d YW	65	assert_se(mkdtemp_malloc("/tmp/test-exec-util.lo.XXXXXXX", &tmp_lo) >= 0);
	66	assert_se(mkdtemp_malloc("/tmp/test-exec-util.hi.XXXXXXX", &tmp_hi) >= 0);
	67
	68	const char * dirs[] = { tmp_hi, tmp_lo, NULL };
	69
	70	name = strjoina(tmp_lo, "/script");
	71	name2 = strjoina(tmp_hi, "/script2");
	72	name3 = strjoina(tmp_lo, "/useless");
	73	overridden = strjoina(tmp_lo, "/overridden");
	74	override = strjoina(tmp_hi, "/overridden");
	75	masked = strjoina(tmp_lo, "/masked");
	76	mask = strjoina(tmp_hi, "/masked");
	77	masked2 = strjoina(tmp_lo, "/masked2");
	78	mask2 = strjoina(tmp_hi, "/masked2");
	79	masked2e = strjoina(tmp_lo, "/masked2e");
	80	mask2e = strjoina(tmp_hi, "/masked2e");
89711996	81
c6e47247 ZJS	82	assert_se(write_string_file(name,
	83	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works",
	84	WRITE_STRING_FILE_CREATE) == 0);
	85	assert_se(write_string_file(name2,
	86	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2",
	87	WRITE_STRING_FILE_CREATE) == 0);
	88	assert_se(write_string_file(overridden,
	89	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	90	WRITE_STRING_FILE_CREATE) == 0);
	91	assert_se(write_string_file(override,
	92	"#!/bin/sh\necho 'Executing '$0",
	93	WRITE_STRING_FILE_CREATE) == 0);
	94	assert_se(write_string_file(masked,
	95	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	96	WRITE_STRING_FILE_CREATE) == 0);
f66137fb ZJS	97	assert_se(write_string_file(masked2,
	98	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	99	WRITE_STRING_FILE_CREATE) == 0);
	100	assert_se(write_string_file(masked2e,
	101	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	102	WRITE_STRING_FILE_CREATE) == 0);
89711996	103	assert_se(symlink("/dev/null", mask) == 0);
f66137fb ZJS	104	assert_se(touch(mask2) == 0);
f66137fb ZJS	105	assert_se(touch(mask2e) == 0);
c6e47247 ZJS	106	assert_se(touch(name3) >= 0);
c6e47247 ZJS	107
89711996 ZJS	108	assert_se(chmod(name, 0755) == 0);
	109	assert_se(chmod(name2, 0755) == 0);
	110	assert_se(chmod(overridden, 0755) == 0);
	111	assert_se(chmod(override, 0755) == 0);
	112	assert_se(chmod(masked, 0755) == 0);
f66137fb ZJS	113	assert_se(chmod(masked2, 0755) == 0);
	114	assert_se(chmod(masked2e, 0755) == 0);
	115	assert_se(chmod(mask2e, 0755) == 0);
89711996	116
3c14dc61 TM	117	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	118	return;
	119
c6e47247	120	if (gather_stdout)
66b2d758	121	execute_directories("test", dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
c6e47247	122	else
66b2d758	123	execute_directories("test", dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
89711996	124
84e8602d	125	assert_se(chdir(tmp_lo) == 0);
89711996 ZJS	126	assert_se(access("it_works", F_OK) >= 0);
	127	assert_se(access("failed", F_OK) < 0);
	128
84e8602d	129	assert_se(chdir(tmp_hi) == 0);
89711996 ZJS	130	assert_se(access("it_works2", F_OK) >= 0);
89711996 ZJS	131	assert_se(access("failed", F_OK) < 0);
89711996 ZJS	132	}
89711996 ZJS	133
4f7452a8 JJ	134	TEST(execute_directory) {
	135	test_execute_directory_one(true);
	136	test_execute_directory_one(false);
	137	}
	138
	139	TEST(execution_order) {
84e8602d	140	_cleanup_(rm_rf_physical_and_freep) char tmp_lo = NULL, tmp_hi = NULL;
c6e47247 ZJS	141	const char name, name2, name3, overridden, override, masked, *mask;
	142	const char output, t;
	143	_cleanup_free_ char *contents = NULL;
	144
84e8602d YW	145	assert_se(mkdtemp_malloc("/tmp/test-exec-util-lo.XXXXXXX", &tmp_lo) >= 0);
	146	assert_se(mkdtemp_malloc("/tmp/test-exec-util-hi.XXXXXXX", &tmp_hi) >= 0);
	147
	148	const char *dirs[] = { tmp_hi, tmp_lo, NULL };
c6e47247	149
84e8602d	150	output = strjoina(tmp_hi, "/output");
c6e47247 ZJS	151
	152	log_info("/* %s >>%s */", __func__, output);
	153
	154	/* write files in "random" order */
84e8602d YW	155	name2 = strjoina(tmp_lo, "/90-bar");
	156	name = strjoina(tmp_hi, "/80-foo");
	157	name3 = strjoina(tmp_lo, "/last");
	158	overridden = strjoina(tmp_lo, "/30-override");
	159	override = strjoina(tmp_hi, "/30-override");
	160	masked = strjoina(tmp_lo, "/10-masked");
	161	mask = strjoina(tmp_hi, "/10-masked");
c6e47247 ZJS	162
	163	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	164	assert_se(write_string_file(name, t, WRITE_STRING_FILE_CREATE) == 0);
	165
	166	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	167	assert_se(write_string_file(name2, t, WRITE_STRING_FILE_CREATE) == 0);
	168
	169	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	170	assert_se(write_string_file(name3, t, WRITE_STRING_FILE_CREATE) == 0);
	171
	172	t = strjoina("#!/bin/sh\necho OVERRIDDEN >>", output);
	173	assert_se(write_string_file(overridden, t, WRITE_STRING_FILE_CREATE) == 0);
	174
	175	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	176	assert_se(write_string_file(override, t, WRITE_STRING_FILE_CREATE) == 0);
	177
	178	t = strjoina("#!/bin/sh\necho MASKED >>", output);
	179	assert_se(write_string_file(masked, t, WRITE_STRING_FILE_CREATE) == 0);
	180
	181	assert_se(symlink("/dev/null", mask) == 0);
	182
	183	assert_se(chmod(name, 0755) == 0);
	184	assert_se(chmod(name2, 0755) == 0);
	185	assert_se(chmod(name3, 0755) == 0);
	186	assert_se(chmod(overridden, 0755) == 0);
	187	assert_se(chmod(override, 0755) == 0);
	188	assert_se(chmod(masked, 0755) == 0);
	189
3c14dc61 TM	190	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	191	return;
	192
66b2d758 ZJS	193	execute_directories(__func__,
	194	dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL,
	195	EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
c6e47247 ZJS	196
c6e47247 ZJS	197	assert_se(read_full_file(output, &contents, NULL) >= 0);
c79e88b3	198	ASSERT_STREQ(contents, "30-override\n80-foo\n90-bar\nlast\n");
c6e47247 ZJS	199	}
	200
	201	static int gather_stdout_one(int fd, void *arg) {
	202	char **s = arg, t;
	203	char buf[128] = {};
	204
	205	assert_se(s);
	206	assert_se(read(fd, buf, sizeof buf) >= 0);
	207	safe_close(fd);
	208
	209	assert_se(t = strndup(buf, sizeof buf));
	210	assert_se(strv_push(s, t) >= 0);
	211
	212	return 0;
	213	}
	214	static int gather_stdout_two(int fd, void *arg) {
de010b0b	215	char ***s = arg;
c6e47247 ZJS	216
	217	STRV_FOREACH(t, *s)
	218	assert_se(write(fd, t, strlen(t)) == (ssize_t) strlen(*t));
	219	safe_close(fd);
	220
	221	return 0;
	222	}
	223	static int gather_stdout_three(int fd, void *arg) {
	224	char **s = arg;
	225	char buf[128] = {};
	226
	227	assert_se(read(fd, buf, sizeof buf - 1) > 0);
	228	safe_close(fd);
	229	assert_se(*s = strndup(buf, sizeof buf));
	230
	231	return 0;
	232	}
	233
1a735f9b	234	const gather_stdout_callback_t gather_stdouts[] = {
c6e47247 ZJS	235	gather_stdout_one,
	236	gather_stdout_two,
	237	gather_stdout_three,
	238	};
	239
4f7452a8	240	TEST(stdout_gathering) {
84e8602d	241	_cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
c6e47247 ZJS	242	const char name, name2, *name3;
	243	int r;
	244
	245	char *tmp = NULL; / this is only used in the forked process, no cleanup here */
	246	_cleanup_free_ char *output = NULL;
	247
	248	void* args[] = {&tmp, &tmp, &output};
	249
84e8602d YW	250	assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);
	251
	252	const char *dirs[] = { tmpdir, NULL };
c6e47247	253
c6e47247	254	/* write files */
84e8602d YW	255	name = strjoina(tmpdir, "/10-foo");
	256	name2 = strjoina(tmpdir, "/20-bar");
	257	name3 = strjoina(tmpdir, "/30-last");
c6e47247 ZJS	258
	259	assert_se(write_string_file(name,
	260	"#!/bin/sh\necho a\necho b\necho c\n",
	261	WRITE_STRING_FILE_CREATE) == 0);
	262	assert_se(write_string_file(name2,
	263	"#!/bin/sh\necho d\n",
	264	WRITE_STRING_FILE_CREATE) == 0);
	265	assert_se(write_string_file(name3,
	266	"#!/bin/sh\nsleep 1",
	267	WRITE_STRING_FILE_CREATE) == 0);
	268
	269	assert_se(chmod(name, 0755) == 0);
	270	assert_se(chmod(name2, 0755) == 0);
	271	assert_se(chmod(name3, 0755) == 0);
	272
3c14dc61 TM	273	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	274	return;
	275
66b2d758 ZJS	276	r = execute_directories(__func__,
66b2d758 ZJS	277	dirs, DEFAULT_TIMEOUT_USEC, gather_stdouts, args, NULL, NULL,
1a735f9b	278	EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
c6e47247 ZJS	279	assert_se(r >= 0);
	280
	281	log_info("got: %s", output);
	282
c79e88b3	283	ASSERT_STREQ(output, "a\nb\nc\nd\n");
c6e47247 ZJS	284	}
c6e47247 ZJS	285
4f7452a8	286	TEST(environment_gathering) {
84e8602d	287	_cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
78ec1bb4	288	const char name, name2, name3, old;
3303d1b2 ZJS	289	int r;
	290
	291	char *tmp = NULL; / this is only used in the forked process, no cleanup here */
	292	_cleanup_strv_free_ char **env = NULL;
	293
	294	void* const args[] = { &tmp, &tmp, &env };
	295
84e8602d YW	296	assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);
	297
	298	const char *dirs[] = { tmpdir, NULL };
3303d1b2	299
3303d1b2	300	/* write files */
84e8602d YW	301	name = strjoina(tmpdir, "/10-foo");
	302	name2 = strjoina(tmpdir, "/20-bar");
	303	name3 = strjoina(tmpdir, "/30-last");
3303d1b2 ZJS	304
	305	assert_se(write_string_file(name,
	306	"#!/bin/sh\n"
	307	"echo A=23\n",
	308	WRITE_STRING_FILE_CREATE) == 0);
	309	assert_se(write_string_file(name2,
	310	"#!/bin/sh\n"
	311	"echo A=22:$A\n\n\n", /* substitution from previous generator */
	312	WRITE_STRING_FILE_CREATE) == 0);
	313	assert_se(write_string_file(name3,
	314	"#!/bin/sh\n"
	315	"echo A=$A:24\n"
	316	"echo B=12\n"
	317	"echo C=000\n"
184d1904 ZJS	318	"echo C=001\n" /* variable overwriting */
	319	/* various invalid entries */
	320	"echo unset A\n"
	321	"echo unset A=\n"
	322	"echo unset A=B\n"
	323	"echo unset \n"
	324	"echo A B=C\n"
	325	"echo A\n"
	326	/* test variable assignment without newline */
	327	"echo PATH=$PATH:/no/such/file", /* no newline */
3303d1b2 ZJS	328	WRITE_STRING_FILE_CREATE) == 0);
	329
	330	assert_se(chmod(name, 0755) == 0);
	331	assert_se(chmod(name2, 0755) == 0);
	332	assert_se(chmod(name3, 0755) == 0);
	333
32e27670	334	/* When booting in containers or without initrd there might not be any PATH in the environment and if
0f36a4c8	335	* there is no PATH /bin/sh built-in PATH may leak and override systemd's default path which is not
32e27670	336	* good. Force our own PATH in environment, to prevent expansion of sh built-in $PATH */
78ec1bb4 DJL	337	old = getenv("PATH");
	338	r = setenv("PATH", "no-sh-built-in-path", 1);
	339	assert_se(r >= 0);
	340
3c14dc61 TM	341	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	342	return;
	343
66b2d758 ZJS	344	r = execute_directories(__func__,
	345	dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, NULL,
	346	EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
78ec1bb4 DJL	347	assert_se(r >= 0);
	348
	349	STRV_FOREACH(p, env)
	350	log_info("got env: \"%s\"", *p);
	351
c79e88b3 IK	352	ASSERT_STREQ(strv_env_get(env, "A"), "22:23:24");
	353	ASSERT_STREQ(strv_env_get(env, "B"), "12");
	354	ASSERT_STREQ(strv_env_get(env, "C"), "001");
	355	ASSERT_STREQ(strv_env_get(env, "PATH"), "no-sh-built-in-path:/no/such/file");
78ec1bb4	356
0f36a4c8	357	/* Now retest with some "default" path passed. */
78ec1bb4	358	env = strv_free(env);
0f36a4c8	359	env = strv_new("PATH=" DEFAULT_PATH_WITHOUT_SBIN);
bea1a013	360	assert_se(env);
78ec1bb4	361
66b2d758 ZJS	362	r = execute_directories(__func__,
	363	dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, env,
	364	EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
3303d1b2 ZJS	365	assert_se(r >= 0);
	366
	367	STRV_FOREACH(p, env)
	368	log_info("got env: \"%s\"", *p);
	369
c79e88b3 IK	370	ASSERT_STREQ(strv_env_get(env, "A"), "22:23:24");
	371	ASSERT_STREQ(strv_env_get(env, "B"), "12");
	372	ASSERT_STREQ(strv_env_get(env, "C"), "001");
0f36a4c8	373	ASSERT_STREQ(strv_env_get(env, "PATH"), DEFAULT_PATH_WITHOUT_SBIN ":/no/such/file");
78ec1bb4 DJL	374
78ec1bb4 DJL	375	/* reset environ PATH */
063f9f0d	376	assert_se(set_unset_env("PATH", old, true) == 0);
3303d1b2 ZJS	377	}
3303d1b2 ZJS	378
4f7452a8	379	TEST(error_catching) {
84e8602d	380	_cleanup_(rm_rf_physical_and_freep) char *tmpdir = NULL;
4b05f0c9 MK	381	const char name, name2, *name3;
	382	int r;
	383
84e8602d YW	384	assert_se(mkdtemp_malloc("/tmp/test-exec-util.XXXXXXX", &tmpdir) >= 0);
	385
	386	const char *dirs[] = { tmpdir, NULL };
4b05f0c9	387
4b05f0c9	388	/* write files */
84e8602d YW	389	name = strjoina(tmpdir, "/10-foo");
	390	name2 = strjoina(tmpdir, "/20-bar");
	391	name3 = strjoina(tmpdir, "/30-last");
4b05f0c9 MK	392
	393	assert_se(write_string_file(name,
	394	"#!/bin/sh\necho a\necho b\necho c\n",
	395	WRITE_STRING_FILE_CREATE) == 0);
	396	assert_se(write_string_file(name2,
	397	"#!/bin/sh\nexit 42\n",
	398	WRITE_STRING_FILE_CREATE) == 0);
	399	assert_se(write_string_file(name3,
	400	"#!/bin/sh\nexit 12",
	401	WRITE_STRING_FILE_CREATE) == 0);
	402
	403	assert_se(chmod(name, 0755) == 0);
	404	assert_se(chmod(name2, 0755) == 0);
	405	assert_se(chmod(name3, 0755) == 0);
	406
3c14dc61 TM	407	if (access(name, X_OK) < 0 && ERRNO_IS_PRIVILEGE(errno))
	408	return;
	409
66b2d758 ZJS	410	r = execute_directories(__func__,
66b2d758 ZJS	411	dirs, DEFAULT_TIMEOUT_USEC,
93378148 YW	412	/* callbacks= / NULL, / callback_args= */ NULL,
93378148 YW	413	/* argv= / NULL, / envp= / NULL, / flags= */ 0);
4b05f0c9 MK	414
	415	/* we should exit with the error code of the first script that failed */
	416	assert_se(r == 42);
	417	}
	418
4f7452a8	419	TEST(exec_command_flags_from_strv) {
b3d59367 AZ	420	ExecCommandFlags flags = 0;
	421	char **valid_strv = STRV_MAKE("no-env-expand", "no-setuid", "ignore-failure");
	422	char **invalid_strv = STRV_MAKE("no-env-expand", "no-setuid", "nonexistent-option", "ignore-failure");
	423	int r;
	424
	425	r = exec_command_flags_from_strv(valid_strv, &flags);
	426
	427	assert_se(r == 0);
	428	assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_ENV_EXPAND));
	429	assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_SETUID));
	430	assert_se(FLAGS_SET(flags, EXEC_COMMAND_IGNORE_FAILURE));
b3d59367 AZ	431	assert_se(!FLAGS_SET(flags, EXEC_COMMAND_FULLY_PRIVILEGED));
	432
	433	r = exec_command_flags_from_strv(invalid_strv, &flags);
	434
	435	assert_se(r == -EINVAL);
	436	}
	437
4f7452a8	438	TEST(exec_command_flags_to_strv) {
05c754bc	439	_cleanup_strv_free_ char **opts = NULL;
b3d59367	440
00a415fc LP	441	ASSERT_OK(exec_command_flags_to_strv(EXEC_COMMAND_NO_ENV_EXPAND\|EXEC_COMMAND_IGNORE_FAILURE, &opts));
00a415fc LP	442	assert_se(strv_equal(opts, STRV_MAKE("ignore-failure", "no-env-expand")));
b3d59367	443
05c754bc	444	opts = strv_free(opts);
b3d59367	445
05c754bc MY	446	ASSERT_OK(exec_command_flags_to_strv(0, &opts));
05c754bc MY	447	assert_se(strv_isempty(opts));
b3d59367	448
05c754bc	449	opts = strv_free(opts);
b3d59367	450
05c754bc	451	ASSERT_ERROR(exec_command_flags_to_strv(1U << 20, &opts), EINVAL);
b3d59367 AZ	452	}
b3d59367 AZ	453
4f7452a8	454	DEFINE_TEST_MAIN(LOG_DEBUG);