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

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <errno.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <unistd.h>

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

static int here = 0, here2 = 0, here3 = 0;
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(fd >= 0);
        assert(arg == &here);
        safe_close(fd);

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

        return 0;
}
static int ignore_stdout_func3(int fd, void *arg) {
        assert(fd >= 0);
        assert(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(bool gather_stdout) {
        char template_lo[] = "/tmp/test-exec-util.lo.XXXXXXX";
        char template_hi[] = "/tmp/test-exec-util.hi.XXXXXXX";
        const char * dirs[] = {template_hi, template_lo, 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(template_lo));
        assert_se(mkdtemp(template_hi));

        name = strjoina(template_lo, "/script");
        name2 = strjoina(template_hi, "/script2");
        name3 = strjoina(template_lo, "/useless");
        overridden = strjoina(template_lo, "/overridden");
        override = strjoina(template_hi, "/overridden");
        masked = strjoina(template_lo, "/masked");
        mask = strjoina(template_hi, "/masked");
        masked2 = strjoina(template_lo, "/masked2");
        mask2 = strjoina(template_hi, "/masked2");
        masked2e = strjoina(template_lo, "/masked2e");
        mask2e = strjoina(template_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 (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(template_lo) == 0);
        assert_se(access("it_works", F_OK) >= 0);
        assert_se(access("failed", F_OK) < 0);

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

        (void) rm_rf(template_lo, REMOVE_ROOT|REMOVE_PHYSICAL);
        (void) rm_rf(template_hi, REMOVE_ROOT|REMOVE_PHYSICAL);
}

static void test_execution_order(void) {
        char template_lo[] = "/tmp/test-exec-util-lo.XXXXXXX";
        char template_hi[] = "/tmp/test-exec-util-hi.XXXXXXX";
        const char *dirs[] = {template_hi, template_lo, NULL};
        const char *name, *name2, *name3, *overridden, *override, *masked, *mask;
        const char *output, *t;
        _cleanup_free_ char *contents = NULL;

        assert_se(mkdtemp(template_lo));
        assert_se(mkdtemp(template_hi));

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

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

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

        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_se(streq(contents, "30-override\n80-foo\n90-bar\nlast\n"));

        (void) rm_rf(template_lo, REMOVE_ROOT|REMOVE_PHYSICAL);
        (void) rm_rf(template_hi, REMOVE_ROOT|REMOVE_PHYSICAL);
}

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, **t;

        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_stdout[] = {
        gather_stdout_one,
        gather_stdout_two,
        gather_stdout_three,
};

static void test_stdout_gathering(void) {
        char template[] = "/tmp/test-exec-util.XXXXXXX";
        const char *dirs[] = {template, 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(template));

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

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

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

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

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

static void test_environment_gathering(void) {
        char template[] = "/tmp/test-exec-util.XXXXXXX", **p;
        const char *dirs[] = {template, 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(template));

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

        /* write files */
        name = strjoina(template, "/10-foo");
        name2 = strjoina(template, "/20-bar");
        name3 = strjoina(template, "/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 initramfs 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);

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

        /* now retest with "default" path passed in, as created by
         * manager_default_environment */
        env = strv_free(env);
        env = strv_new("PATH=" DEFAULT_PATH);
        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_se(streq(strv_env_get(env, "A"), "22:23:24"));
        assert_se(streq(strv_env_get(env, "B"), "12"));
        assert_se(streq(strv_env_get(env, "C"), "001"));
        assert_se(streq(strv_env_get(env, "PATH"), DEFAULT_PATH ":/no/such/file"));

        /* reset environ PATH */
        if (old)
                (void) setenv("PATH", old, 1);
        else
                (void) unsetenv("PATH");
}

static void test_error_catching(void) {
        char template[] = "/tmp/test-exec-util.XXXXXXX";
        const char *dirs[] = {template, NULL};
        const char *name, *name2, *name3;
        int r;

        assert_se(mkdtemp(template));

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

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

        r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_NONE);

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

static void test_exec_command_flags_from_strv(void) {
        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_AMBIENT_MAGIC));
        assert_se(!FLAGS_SET(flags, EXEC_COMMAND_FULLY_PRIVILEGED));

        r = exec_command_flags_from_strv(invalid_strv, &flags);

        assert_se(r == -EINVAL);
}

static void test_exec_command_flags_to_strv(void) {
        _cleanup_strv_free_ char **opts = NULL, **empty_opts = NULL, **invalid_opts = NULL;
        ExecCommandFlags flags = 0;
        int r;

        flags |= (EXEC_COMMAND_AMBIENT_MAGIC|EXEC_COMMAND_NO_ENV_EXPAND|EXEC_COMMAND_IGNORE_FAILURE);

        r = exec_command_flags_to_strv(flags, &opts);

        assert_se(r == 0);
        assert_se(strv_equal(opts, STRV_MAKE("ignore-failure", "ambient", "no-env-expand")));

        r = exec_command_flags_to_strv(0, &empty_opts);

        assert_se(r == 0);
        assert_se(strv_equal(empty_opts, STRV_MAKE_EMPTY));

        flags = _EXEC_COMMAND_FLAGS_INVALID;

        r = exec_command_flags_to_strv(flags, &invalid_opts);

        assert_se(r == -EINVAL);
}

int main(int argc, char *argv[]) {
        test_setup_logging(LOG_DEBUG);

        test_execute_directory(true);
        test_execute_directory(false);
        test_execution_order();
        test_stdout_gathering();
        test_environment_gathering();
        test_error_catching();
        test_exec_command_flags_from_strv();
        test_exec_command_flags_to_strv();

        return 0;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
89711996 ZJS	2
89711996 ZJS	3	#include <errno.h>
89711996 ZJS	4	#include <sys/stat.h>
	5	#include <sys/wait.h>
	6	#include <unistd.h>
	7
c6e47247 ZJS	8	#include "alloc-util.h"
c6e47247 ZJS	9	#include "copy.h"
89711996	10	#include "def.h"
3303d1b2	11	#include "env-util.h"
89711996	12	#include "exec-util.h"
c6e47247	13	#include "fd-util.h"
89711996 ZJS	14	#include "fileio.h"
	15	#include "fs-util.h"
	16	#include "log.h"
	17	#include "macro.h"
78ec1bb4	18	#include "path-util.h"
89711996 ZJS	19	#include "rm-rf.h"
89711996 ZJS	20	#include "string-util.h"
c6e47247	21	#include "strv.h"
6d7c4033	22	#include "tests.h"
89711996	23
c6e47247 ZJS	24	static int here = 0, here2 = 0, here3 = 0;
	25	void *ignore_stdout_args[] = {&here, &here2, &here3};
	26
	27	/* noop handlers, just check that arguments are passed correctly */
	28	static int ignore_stdout_func(int fd, void *arg) {
	29	assert(fd >= 0);
	30	assert(arg == &here);
	31	safe_close(fd);
	32
	33	return 0;
	34	}
	35	static int ignore_stdout_func2(int fd, void *arg) {
	36	assert(fd >= 0);
	37	assert(arg == &here2);
	38	safe_close(fd);
	39
	40	return 0;
	41	}
	42	static int ignore_stdout_func3(int fd, void *arg) {
	43	assert(fd >= 0);
	44	assert(arg == &here3);
	45	safe_close(fd);
	46
	47	return 0;
	48	}
	49
	50	static const gather_stdout_callback_t ignore_stdout[] = {
	51	ignore_stdout_func,
	52	ignore_stdout_func2,
	53	ignore_stdout_func3,
	54	};
	55
	56	static void test_execute_directory(bool gather_stdout) {
f66137fb ZJS	57	char template_lo[] = "/tmp/test-exec-util.lo.XXXXXXX";
f66137fb ZJS	58	char template_hi[] = "/tmp/test-exec-util.hi.XXXXXXX";
89711996	59	const char * dirs[] = {template_hi, template_lo, NULL};
f66137fb ZJS	60	const char name, name2, *name3,
	61	overridden, override,
	62	masked, mask,
	63	masked2, mask2, /* the mask is non-executable */
	64	masked2e, mask2e; /* the mask is executable */
89711996	65
c6e47247 ZJS	66	log_info("/* %s (%s) */", __func__, gather_stdout ? "gathering stdout" : "asynchronous");
c6e47247 ZJS	67
89711996 ZJS	68	assert_se(mkdtemp(template_lo));
	69	assert_se(mkdtemp(template_hi));
	70
	71	name = strjoina(template_lo, "/script");
	72	name2 = strjoina(template_hi, "/script2");
	73	name3 = strjoina(template_lo, "/useless");
	74	overridden = strjoina(template_lo, "/overridden");
	75	override = strjoina(template_hi, "/overridden");
	76	masked = strjoina(template_lo, "/masked");
	77	mask = strjoina(template_hi, "/masked");
f66137fb ZJS	78	masked2 = strjoina(template_lo, "/masked2");
	79	mask2 = strjoina(template_hi, "/masked2");
	80	masked2e = strjoina(template_lo, "/masked2e");
	81	mask2e = strjoina(template_hi, "/masked2e");
89711996	82
c6e47247 ZJS	83	assert_se(write_string_file(name,
	84	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works",
	85	WRITE_STRING_FILE_CREATE) == 0);
	86	assert_se(write_string_file(name2,
	87	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/it_works2",
	88	WRITE_STRING_FILE_CREATE) == 0);
	89	assert_se(write_string_file(overridden,
	90	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	91	WRITE_STRING_FILE_CREATE) == 0);
	92	assert_se(write_string_file(override,
	93	"#!/bin/sh\necho 'Executing '$0",
	94	WRITE_STRING_FILE_CREATE) == 0);
	95	assert_se(write_string_file(masked,
	96	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	97	WRITE_STRING_FILE_CREATE) == 0);
f66137fb ZJS	98	assert_se(write_string_file(masked2,
	99	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	100	WRITE_STRING_FILE_CREATE) == 0);
	101	assert_se(write_string_file(masked2e,
	102	"#!/bin/sh\necho 'Executing '$0\ntouch $(dirname $0)/failed",
	103	WRITE_STRING_FILE_CREATE) == 0);
89711996	104	assert_se(symlink("/dev/null", mask) == 0);
f66137fb ZJS	105	assert_se(touch(mask2) == 0);
f66137fb ZJS	106	assert_se(touch(mask2e) == 0);
c6e47247 ZJS	107	assert_se(touch(name3) >= 0);
c6e47247 ZJS	108
89711996 ZJS	109	assert_se(chmod(name, 0755) == 0);
	110	assert_se(chmod(name2, 0755) == 0);
	111	assert_se(chmod(overridden, 0755) == 0);
	112	assert_se(chmod(override, 0755) == 0);
	113	assert_se(chmod(masked, 0755) == 0);
f66137fb ZJS	114	assert_se(chmod(masked2, 0755) == 0);
	115	assert_se(chmod(masked2e, 0755) == 0);
	116	assert_se(chmod(mask2e, 0755) == 0);
89711996	117
c6e47247	118	if (gather_stdout)
4b05f0c9	119	execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
c6e47247	120	else
4b05f0c9	121	execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
89711996 ZJS	122
	123	assert_se(chdir(template_lo) == 0);
	124	assert_se(access("it_works", F_OK) >= 0);
	125	assert_se(access("failed", F_OK) < 0);
	126
	127	assert_se(chdir(template_hi) == 0);
	128	assert_se(access("it_works2", F_OK) >= 0);
	129	assert_se(access("failed", F_OK) < 0);
	130
	131	(void) rm_rf(template_lo, REMOVE_ROOT\|REMOVE_PHYSICAL);
	132	(void) rm_rf(template_hi, REMOVE_ROOT\|REMOVE_PHYSICAL);
	133	}
	134
c6e47247 ZJS	135	static void test_execution_order(void) {
	136	char template_lo[] = "/tmp/test-exec-util-lo.XXXXXXX";
	137	char template_hi[] = "/tmp/test-exec-util-hi.XXXXXXX";
	138	const char *dirs[] = {template_hi, template_lo, NULL};
	139	const char name, name2, name3, overridden, override, masked, *mask;
	140	const char output, t;
	141	_cleanup_free_ char *contents = NULL;
	142
	143	assert_se(mkdtemp(template_lo));
	144	assert_se(mkdtemp(template_hi));
	145
	146	output = strjoina(template_hi, "/output");
	147
	148	log_info("/* %s >>%s */", __func__, output);
	149
	150	/* write files in "random" order */
	151	name2 = strjoina(template_lo, "/90-bar");
	152	name = strjoina(template_hi, "/80-foo");
	153	name3 = strjoina(template_lo, "/last");
	154	overridden = strjoina(template_lo, "/30-override");
	155	override = strjoina(template_hi, "/30-override");
	156	masked = strjoina(template_lo, "/10-masked");
	157	mask = strjoina(template_hi, "/10-masked");
	158
	159	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	160	assert_se(write_string_file(name, t, WRITE_STRING_FILE_CREATE) == 0);
	161
	162	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	163	assert_se(write_string_file(name2, t, WRITE_STRING_FILE_CREATE) == 0);
	164
	165	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	166	assert_se(write_string_file(name3, t, WRITE_STRING_FILE_CREATE) == 0);
	167
	168	t = strjoina("#!/bin/sh\necho OVERRIDDEN >>", output);
	169	assert_se(write_string_file(overridden, t, WRITE_STRING_FILE_CREATE) == 0);
	170
	171	t = strjoina("#!/bin/sh\necho $(basename $0) >>", output);
	172	assert_se(write_string_file(override, t, WRITE_STRING_FILE_CREATE) == 0);
	173
	174	t = strjoina("#!/bin/sh\necho MASKED >>", output);
	175	assert_se(write_string_file(masked, t, WRITE_STRING_FILE_CREATE) == 0);
	176
	177	assert_se(symlink("/dev/null", mask) == 0);
	178
	179	assert_se(chmod(name, 0755) == 0);
	180	assert_se(chmod(name2, 0755) == 0);
	181	assert_se(chmod(name3, 0755) == 0);
	182	assert_se(chmod(overridden, 0755) == 0);
	183	assert_se(chmod(override, 0755) == 0);
	184	assert_se(chmod(masked, 0755) == 0);
	185
4b05f0c9	186	execute_directories(dirs, DEFAULT_TIMEOUT_USEC, ignore_stdout, ignore_stdout_args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
c6e47247 ZJS	187
	188	assert_se(read_full_file(output, &contents, NULL) >= 0);
	189	assert_se(streq(contents, "30-override\n80-foo\n90-bar\nlast\n"));
	190
	191	(void) rm_rf(template_lo, REMOVE_ROOT\|REMOVE_PHYSICAL);
	192	(void) rm_rf(template_hi, REMOVE_ROOT\|REMOVE_PHYSICAL);
	193	}
	194
	195	static int gather_stdout_one(int fd, void *arg) {
	196	char **s = arg, t;
	197	char buf[128] = {};
	198
	199	assert_se(s);
	200	assert_se(read(fd, buf, sizeof buf) >= 0);
	201	safe_close(fd);
	202
	203	assert_se(t = strndup(buf, sizeof buf));
	204	assert_se(strv_push(s, t) >= 0);
	205
	206	return 0;
	207	}
	208	static int gather_stdout_two(int fd, void *arg) {
	209	char *s = arg, t;
	210
	211	STRV_FOREACH(t, *s)
	212	assert_se(write(fd, t, strlen(t)) == (ssize_t) strlen(*t));
	213	safe_close(fd);
	214
	215	return 0;
	216	}
	217	static int gather_stdout_three(int fd, void *arg) {
	218	char **s = arg;
	219	char buf[128] = {};
	220
	221	assert_se(read(fd, buf, sizeof buf - 1) > 0);
	222	safe_close(fd);
	223	assert_se(*s = strndup(buf, sizeof buf));
	224
	225	return 0;
	226	}
	227
4fa3993b	228	const gather_stdout_callback_t gather_stdout[] = {
c6e47247 ZJS	229	gather_stdout_one,
	230	gather_stdout_two,
	231	gather_stdout_three,
	232	};
	233
c6e47247 ZJS	234	static void test_stdout_gathering(void) {
	235	char template[] = "/tmp/test-exec-util.XXXXXXX";
	236	const char *dirs[] = {template, NULL};
	237	const char name, name2, *name3;
	238	int r;
	239
	240	char *tmp = NULL; / this is only used in the forked process, no cleanup here */
	241	_cleanup_free_ char *output = NULL;
	242
	243	void* args[] = {&tmp, &tmp, &output};
	244
	245	assert_se(mkdtemp(template));
	246
	247	log_info("/* %s */", __func__);
	248
	249	/* write files */
	250	name = strjoina(template, "/10-foo");
	251	name2 = strjoina(template, "/20-bar");
	252	name3 = strjoina(template, "/30-last");
	253
	254	assert_se(write_string_file(name,
	255	"#!/bin/sh\necho a\necho b\necho c\n",
	256	WRITE_STRING_FILE_CREATE) == 0);
	257	assert_se(write_string_file(name2,
	258	"#!/bin/sh\necho d\n",
	259	WRITE_STRING_FILE_CREATE) == 0);
	260	assert_se(write_string_file(name3,
	261	"#!/bin/sh\nsleep 1",
	262	WRITE_STRING_FILE_CREATE) == 0);
	263
	264	assert_se(chmod(name, 0755) == 0);
	265	assert_se(chmod(name2, 0755) == 0);
	266	assert_se(chmod(name3, 0755) == 0);
	267
4b05f0c9	268	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_stdout, args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
c6e47247 ZJS	269	assert_se(r >= 0);
	270
	271	log_info("got: %s", output);
	272
	273	assert_se(streq(output, "a\nb\nc\nd\n"));
	274	}
	275
3303d1b2 ZJS	276	static void test_environment_gathering(void) {
	277	char template[] = "/tmp/test-exec-util.XXXXXXX", **p;
	278	const char *dirs[] = {template, NULL};
78ec1bb4	279	const char name, name2, name3, old;
3303d1b2 ZJS	280	int r;
	281
	282	char *tmp = NULL; / this is only used in the forked process, no cleanup here */
	283	_cleanup_strv_free_ char **env = NULL;
	284
	285	void* const args[] = { &tmp, &tmp, &env };
	286
	287	assert_se(mkdtemp(template));
	288
	289	log_info("/* %s */", __func__);
	290
	291	/* write files */
	292	name = strjoina(template, "/10-foo");
	293	name2 = strjoina(template, "/20-bar");
	294	name3 = strjoina(template, "/30-last");
	295
	296	assert_se(write_string_file(name,
	297	"#!/bin/sh\n"
	298	"echo A=23\n",
	299	WRITE_STRING_FILE_CREATE) == 0);
	300	assert_se(write_string_file(name2,
	301	"#!/bin/sh\n"
	302	"echo A=22:$A\n\n\n", /* substitution from previous generator */
	303	WRITE_STRING_FILE_CREATE) == 0);
	304	assert_se(write_string_file(name3,
	305	"#!/bin/sh\n"
	306	"echo A=$A:24\n"
	307	"echo B=12\n"
	308	"echo C=000\n"
184d1904 ZJS	309	"echo C=001\n" /* variable overwriting */
	310	/* various invalid entries */
	311	"echo unset A\n"
	312	"echo unset A=\n"
	313	"echo unset A=B\n"
	314	"echo unset \n"
	315	"echo A B=C\n"
	316	"echo A\n"
	317	/* test variable assignment without newline */
	318	"echo PATH=$PATH:/no/such/file", /* no newline */
3303d1b2 ZJS	319	WRITE_STRING_FILE_CREATE) == 0);
	320
	321	assert_se(chmod(name, 0755) == 0);
	322	assert_se(chmod(name2, 0755) == 0);
	323	assert_se(chmod(name3, 0755) == 0);
	324
78ec1bb4	325	/* When booting in containers or without initramfs there might not be
04193fb2	326	* any PATH in the environment and if there is no PATH /bin/sh built-in
78ec1bb4 DJL	327	* PATH may leak and override systemd's DEFAULT_PATH which is not
	328	* good. Force our own PATH in environment, to prevent expansion of sh
	329	* built-in $PATH */
	330	old = getenv("PATH");
	331	r = setenv("PATH", "no-sh-built-in-path", 1);
	332	assert_se(r >= 0);
	333
4b05f0c9	334	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, NULL, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
78ec1bb4 DJL	335	assert_se(r >= 0);
	336
	337	STRV_FOREACH(p, env)
	338	log_info("got env: \"%s\"", *p);
	339
	340	assert_se(streq(strv_env_get(env, "A"), "22:23:24"));
	341	assert_se(streq(strv_env_get(env, "B"), "12"));
	342	assert_se(streq(strv_env_get(env, "C"), "001"));
	343	assert_se(streq(strv_env_get(env, "PATH"), "no-sh-built-in-path:/no/such/file"));
	344
	345	/* now retest with "default" path passed in, as created by
	346	* manager_default_environment */
	347	env = strv_free(env);
bea1a013 LP	348	env = strv_new("PATH=" DEFAULT_PATH);
bea1a013 LP	349	assert_se(env);
78ec1bb4	350
4b05f0c9	351	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, gather_environment, args, NULL, env, EXEC_DIR_PARALLEL \| EXEC_DIR_IGNORE_ERRORS);
3303d1b2 ZJS	352	assert_se(r >= 0);
	353
	354	STRV_FOREACH(p, env)
	355	log_info("got env: \"%s\"", *p);
	356
	357	assert_se(streq(strv_env_get(env, "A"), "22:23:24"));
	358	assert_se(streq(strv_env_get(env, "B"), "12"));
	359	assert_se(streq(strv_env_get(env, "C"), "001"));
78ec1bb4 DJL	360	assert_se(streq(strv_env_get(env, "PATH"), DEFAULT_PATH ":/no/such/file"));
	361
	362	/* reset environ PATH */
04193fb2 ZJS	363	if (old)
	364	(void) setenv("PATH", old, 1);
	365	else
	366	(void) unsetenv("PATH");
3303d1b2 ZJS	367	}
3303d1b2 ZJS	368
4b05f0c9 MK	369	static void test_error_catching(void) {
	370	char template[] = "/tmp/test-exec-util.XXXXXXX";
	371	const char *dirs[] = {template, NULL};
	372	const char name, name2, *name3;
	373	int r;
	374
	375	assert_se(mkdtemp(template));
	376
	377	log_info("/* %s */", __func__);
	378
	379	/* write files */
	380	name = strjoina(template, "/10-foo");
	381	name2 = strjoina(template, "/20-bar");
	382	name3 = strjoina(template, "/30-last");
	383
	384	assert_se(write_string_file(name,
	385	"#!/bin/sh\necho a\necho b\necho c\n",
	386	WRITE_STRING_FILE_CREATE) == 0);
	387	assert_se(write_string_file(name2,
	388	"#!/bin/sh\nexit 42\n",
	389	WRITE_STRING_FILE_CREATE) == 0);
	390	assert_se(write_string_file(name3,
	391	"#!/bin/sh\nexit 12",
	392	WRITE_STRING_FILE_CREATE) == 0);
	393
	394	assert_se(chmod(name, 0755) == 0);
	395	assert_se(chmod(name2, 0755) == 0);
	396	assert_se(chmod(name3, 0755) == 0);
	397
	398	r = execute_directories(dirs, DEFAULT_TIMEOUT_USEC, NULL, NULL, NULL, NULL, EXEC_DIR_NONE);
	399
	400	/* we should exit with the error code of the first script that failed */
	401	assert_se(r == 42);
	402	}
	403
b3d59367 AZ	404	static void test_exec_command_flags_from_strv(void) {
	405	ExecCommandFlags flags = 0;
	406	char **valid_strv = STRV_MAKE("no-env-expand", "no-setuid", "ignore-failure");
	407	char **invalid_strv = STRV_MAKE("no-env-expand", "no-setuid", "nonexistent-option", "ignore-failure");
	408	int r;
	409
	410	r = exec_command_flags_from_strv(valid_strv, &flags);
	411
	412	assert_se(r == 0);
	413	assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_ENV_EXPAND));
	414	assert_se(FLAGS_SET(flags, EXEC_COMMAND_NO_SETUID));
	415	assert_se(FLAGS_SET(flags, EXEC_COMMAND_IGNORE_FAILURE));
	416	assert_se(!FLAGS_SET(flags, EXEC_COMMAND_AMBIENT_MAGIC));
	417	assert_se(!FLAGS_SET(flags, EXEC_COMMAND_FULLY_PRIVILEGED));
	418
	419	r = exec_command_flags_from_strv(invalid_strv, &flags);
	420
	421	assert_se(r == -EINVAL);
	422	}
	423
	424	static void test_exec_command_flags_to_strv(void) {
	425	_cleanup_strv_free_ char opts = NULL, empty_opts = NULL, **invalid_opts = NULL;
	426	ExecCommandFlags flags = 0;
	427	int r;
	428
	429	flags \|= (EXEC_COMMAND_AMBIENT_MAGIC\|EXEC_COMMAND_NO_ENV_EXPAND\|EXEC_COMMAND_IGNORE_FAILURE);
	430
	431	r = exec_command_flags_to_strv(flags, &opts);
	432
	433	assert_se(r == 0);
	434	assert_se(strv_equal(opts, STRV_MAKE("ignore-failure", "ambient", "no-env-expand")));
	435
	436	r = exec_command_flags_to_strv(0, &empty_opts);
	437
	438	assert_se(r == 0);
	439	assert_se(strv_equal(empty_opts, STRV_MAKE_EMPTY));
	440
	441	flags = _EXEC_COMMAND_FLAGS_INVALID;
	442
	443	r = exec_command_flags_to_strv(flags, &invalid_opts);
	444
	445	assert_se(r == -EINVAL);
	446	}
	447
89711996	448	int main(int argc, char *argv[]) {
6d7c4033	449	test_setup_logging(LOG_DEBUG);
89711996	450
c6e47247 ZJS	451	test_execute_directory(true);
	452	test_execute_directory(false);
	453	test_execution_order();
	454	test_stdout_gathering();
3303d1b2	455	test_environment_gathering();
4b05f0c9	456	test_error_catching();
b3d59367 AZ	457	test_exec_command_flags_from_strv();
b3d59367 AZ	458	test_exec_command_flags_to_strv();
89711996 ZJS	459
	460	return 0;
	461	}