[thirdparty/systemd.git] / src / libsystemd / sd-path / sd-path.c

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

#include "sd-path.h"

#include "alloc-util.h"
#include "architecture.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "nulstr-util.h"
#include "path-lookup.h"
#include "path-util.h"
#include "string-util.h"
#include "strv.h"
#include "user-util.h"

static int from_environment(const char *envname, const char *fallback, const char **ret) {
        assert(ret);

        if (envname) {
                const char *e;

                e = secure_getenv(envname);
                if (e && path_is_absolute(e)) {
                        *ret = e;
                        return 0;
                }
        }

        if (fallback) {
                *ret = fallback;
                return 0;
        }

        return -ENXIO;
}

static int from_home_dir(const char *envname, const char *suffix, char **buffer, const char **ret) {
        _cleanup_free_ char *h = NULL;
        int r;

        assert(suffix);
        assert(buffer);
        assert(ret);

        if (envname) {
                const char *e = NULL;

                e = secure_getenv(envname);
                if (e && path_is_absolute(e)) {
                        *ret = e;
                        return 0;
                }
        }

        r = get_home_dir(&h);
        if (r < 0)
                return r;

        if (!path_extend(&h, suffix))
                return -ENOMEM;

        *buffer = h;
        *ret = TAKE_PTR(h);
        return 0;
}

static int from_user_dir(const char *field, char **buffer, const char **ret) {
        _cleanup_fclose_ FILE *f = NULL;
        _cleanup_free_ char *b = NULL;
        _cleanup_free_ const char *fn = NULL;
        const char *c = NULL;
        int r;

        assert(field);
        assert(buffer);
        assert(ret);

        r = from_home_dir("XDG_CONFIG_HOME", ".config", &b, &c);
        if (r < 0)
                return r;

        fn = path_join(c, "user-dirs.dirs");
        if (!fn)
                return -ENOMEM;

        f = fopen(fn, "re");
        if (!f) {
                if (errno == ENOENT)
                        goto fallback;

                return -errno;
        }

        /* This is an awful parse, but it follows closely what xdg-user-dirs does upstream */
        for (;;) {
                _cleanup_free_ char *line = NULL;
                char *p, *e;

                r = read_stripped_line(f, LONG_LINE_MAX, &line);
                if (r < 0)
                        return r;
                if (r == 0)
                        break;

                p = startswith(line, field);
                if (!p)
                        continue;

                p += strspn(p, WHITESPACE);

                if (*p != '=')
                        continue;
                p++;

                p += strspn(p, WHITESPACE);

                if (*p != '"')
                        continue;
                p++;

                e = strrchr(p, '"');
                if (!e)
                        continue;
                *e = 0;

                /* Three syntaxes permitted: relative to $HOME, $HOME itself, and absolute path */
                if (startswith(p, "$HOME/")) {
                        _cleanup_free_ char *h = NULL;

                        r = get_home_dir(&h);
                        if (r < 0)
                                return r;

                        if (!path_extend(&h, p+5))
                                return -ENOMEM;

                        *buffer = h;
                        *ret = TAKE_PTR(h);
                        return 0;
                } else if (streq(p, "$HOME")) {

                        r = get_home_dir(buffer);
                        if (r < 0)
                                return r;

                        *ret = *buffer;
                        return 0;
                } else if (path_is_absolute(p)) {
                        char *copy;

                        copy = strdup(p);
                        if (!copy)
                                return -ENOMEM;

                        *buffer = copy;
                        *ret = copy;
                        return 0;
                }
        }

fallback:
        /* The desktop directory defaults to $HOME/Desktop, the others to $HOME */
        if (streq(field, "XDG_DESKTOP_DIR")) {
                _cleanup_free_ char *h = NULL;

                r = get_home_dir(&h);
                if (r < 0)
                        return r;

                if (!path_extend(&h, "Desktop"))
                        return -ENOMEM;

                *buffer = h;
                *ret = TAKE_PTR(h);
        } else {
                r = get_home_dir(buffer);
                if (r < 0)
                        return r;

                *ret = *buffer;
        }

        return 0;
}

static int get_path(uint64_t type, char **buffer, const char **ret) {
        int r;

        assert(buffer);
        assert(ret);

        switch (type) {

        case SD_PATH_TEMPORARY:
                return tmp_dir(ret);

        case SD_PATH_TEMPORARY_LARGE:
                return var_tmp_dir(ret);

        case SD_PATH_SYSTEM_BINARIES:
                *ret = "/usr/bin";
                return 0;

        case SD_PATH_SYSTEM_INCLUDE:
                *ret = "/usr/include";
                return 0;

        case SD_PATH_SYSTEM_LIBRARY_PRIVATE:
                *ret = "/usr/lib";
                return 0;

        case SD_PATH_SYSTEM_LIBRARY_ARCH:
                *ret = LIBDIR;
                return 0;

        case SD_PATH_SYSTEM_SHARED:
                *ret = "/usr/share";
                return 0;

        case SD_PATH_SYSTEM_CONFIGURATION_FACTORY:
                *ret = "/usr/share/factory/etc";
                return 0;

        case SD_PATH_SYSTEM_STATE_FACTORY:
                *ret = "/usr/share/factory/var";
                return 0;

        case SD_PATH_SYSTEM_CONFIGURATION:
                *ret = "/etc";
                return 0;

        case SD_PATH_SYSTEM_RUNTIME:
                *ret = "/run";
                return 0;

        case SD_PATH_SYSTEM_RUNTIME_LOGS:
                *ret = "/run/log";
                return 0;

        case SD_PATH_SYSTEM_STATE_PRIVATE:
                *ret = "/var/lib";
                return 0;

        case SD_PATH_SYSTEM_STATE_LOGS:
                *ret = "/var/log";
                return 0;

        case SD_PATH_SYSTEM_STATE_CACHE:
                *ret = "/var/cache";
                return 0;

        case SD_PATH_SYSTEM_STATE_SPOOL:
                *ret = "/var/spool";
                return 0;

        case SD_PATH_USER_BINARIES:
                return from_home_dir(NULL, ".local/bin", buffer, ret);

        case SD_PATH_USER_LIBRARY_PRIVATE:
                return from_home_dir(NULL, ".local/lib", buffer, ret);

        case SD_PATH_USER_LIBRARY_ARCH:
                return from_home_dir(NULL, ".local/lib/" LIB_ARCH_TUPLE, buffer, ret);

        case SD_PATH_USER_SHARED:
                return from_home_dir("XDG_DATA_HOME", ".local/share", buffer, ret);

        case SD_PATH_USER_CONFIGURATION:
                return from_home_dir("XDG_CONFIG_HOME", ".config", buffer, ret);

        case SD_PATH_USER_RUNTIME:
                return from_environment("XDG_RUNTIME_DIR", NULL, ret);

        case SD_PATH_USER_STATE_CACHE:
                return from_home_dir("XDG_CACHE_HOME", ".cache", buffer, ret);

        case SD_PATH_USER_STATE_PRIVATE:
                return from_home_dir("XDG_STATE_HOME", ".local/state", buffer, ret);

        case SD_PATH_USER:
                r = get_home_dir(buffer);
                if (r < 0)
                        return r;

                *ret = *buffer;
                return 0;

        case SD_PATH_USER_DOCUMENTS:
                return from_user_dir("XDG_DOCUMENTS_DIR", buffer, ret);

        case SD_PATH_USER_MUSIC:
                return from_user_dir("XDG_MUSIC_DIR", buffer, ret);

        case SD_PATH_USER_PICTURES:
                return from_user_dir("XDG_PICTURES_DIR", buffer, ret);

        case SD_PATH_USER_VIDEOS:
                return from_user_dir("XDG_VIDEOS_DIR", buffer, ret);

        case SD_PATH_USER_DOWNLOAD:
                return from_user_dir("XDG_DOWNLOAD_DIR", buffer, ret);

        case SD_PATH_USER_PUBLIC:
                return from_user_dir("XDG_PUBLICSHARE_DIR", buffer, ret);

        case SD_PATH_USER_TEMPLATES:
                return from_user_dir("XDG_TEMPLATES_DIR", buffer, ret);

        case SD_PATH_USER_DESKTOP:
                return from_user_dir("XDG_DESKTOP_DIR", buffer, ret);

        case SD_PATH_SYSTEMD_UTIL:
                *ret = PREFIX_NOSLASH "/lib/systemd";
                return 0;

        case SD_PATH_SYSTEMD_SYSTEM_UNIT:
                *ret = SYSTEM_DATA_UNIT_DIR;
                return 0;

        case SD_PATH_SYSTEMD_SYSTEM_PRESET:
                *ret = PREFIX_NOSLASH "/lib/systemd/system-preset";
                return 0;

        case SD_PATH_SYSTEMD_USER_UNIT:
                *ret = USER_DATA_UNIT_DIR;
                return 0;

        case SD_PATH_SYSTEMD_USER_PRESET:
                *ret = PREFIX_NOSLASH "/lib/systemd/user-preset";
                return 0;

        case SD_PATH_SYSTEMD_SYSTEM_CONF:
                *ret = SYSTEM_CONFIG_UNIT_DIR;
                return 0;

        case SD_PATH_SYSTEMD_USER_CONF:
                *ret = USER_CONFIG_UNIT_DIR;
                return 0;

        case SD_PATH_SYSTEMD_SYSTEM_GENERATOR:
                *ret = SYSTEM_GENERATOR_DIR;
                return 0;

        case SD_PATH_SYSTEMD_USER_GENERATOR:
                *ret = USER_GENERATOR_DIR;
                return 0;

        case SD_PATH_SYSTEMD_SLEEP:
                *ret = PREFIX_NOSLASH "/lib/systemd/system-sleep";
                return 0;

        case SD_PATH_SYSTEMD_SHUTDOWN:
                *ret = PREFIX_NOSLASH "/lib/systemd/system-shutdown";
                return 0;

        case SD_PATH_TMPFILES:
                *ret = "/usr/lib/tmpfiles.d";
                return 0;

        case SD_PATH_SYSUSERS:
                *ret = PREFIX_NOSLASH "/lib/sysusers.d";
                return 0;

        case SD_PATH_SYSCTL:
                *ret = PREFIX_NOSLASH "/lib/sysctl.d";
                return 0;

        case SD_PATH_BINFMT:
                *ret = PREFIX_NOSLASH "/lib/binfmt.d";
                return 0;

        case SD_PATH_MODULES_LOAD:
                *ret = PREFIX_NOSLASH "/lib/modules-load.d";
                return 0;

        case SD_PATH_CATALOG:
                *ret = "/usr/lib/systemd/catalog";
                return 0;

        case SD_PATH_SYSTEMD_SYSTEM_ENVIRONMENT_GENERATOR:
                *ret = SYSTEM_ENV_GENERATOR_DIR;
                return 0;

        case SD_PATH_SYSTEMD_USER_ENVIRONMENT_GENERATOR:
                *ret = USER_ENV_GENERATOR_DIR;
                return 0;
        }

        return -EOPNOTSUPP;
}

static int get_path_alloc(uint64_t type, const char *suffix, char **path) {
        _cleanup_free_ char *buffer = NULL;
        char *buffer2 = NULL;
        const char *ret;
        int r;

        assert(path);

        r = get_path(type, &buffer, &ret);
        if (r < 0)
                return r;

        if (suffix) {
                suffix += strspn(suffix, "/");
                buffer2 = path_join(ret, suffix);
                if (!buffer2)
                        return -ENOMEM;
        } else if (!buffer) {
                buffer = strdup(ret);
                if (!buffer)
                        return -ENOMEM;
        }

        *path = buffer2 ?: TAKE_PTR(buffer);
        return 0;
}

_public_ int sd_path_lookup(uint64_t type, const char *suffix, char **path) {
        int r;

        assert_return(path, -EINVAL);

        r = get_path_alloc(type, suffix, path);
        if (r != -EOPNOTSUPP)
                return r;

        /* Fall back to sd_path_lookup_strv */
        _cleanup_strv_free_ char **l = NULL;
        char *buffer;

        r = sd_path_lookup_strv(type, suffix, &l);
        if (r < 0)
                return r;

        buffer = strv_join(l, ":");
        if (!buffer)
                return -ENOMEM;

        *path = buffer;
        return 0;
}

static int search_from_environment(
                char ***ret,
                const char *env_home,
                const char *home_suffix,
                const char *env_search,
                bool env_search_sufficient,
                const char *first, ...) {

        _cleanup_strv_free_ char **l = NULL;
        const char *e;
        char *h = NULL;
        int r;

        assert(ret);

        if (env_search) {
                e = secure_getenv(env_search);
                if (e) {
                        l = strv_split(e, ":");
                        if (!l)
                                return -ENOMEM;

                        if (env_search_sufficient) {
                                *ret = TAKE_PTR(l);
                                return 0;
                        }
                }
        }

        if (!l && first) {
                va_list ap;

                va_start(ap, first);
                l = strv_new_ap(first, ap);
                va_end(ap);

                if (!l)
                        return -ENOMEM;
        }

        if (env_home) {
                e = secure_getenv(env_home);
                if (e && path_is_absolute(e)) {
                        h = strdup(e);
                        if (!h)
                                return -ENOMEM;
                }
        }

        if (!h && home_suffix) {
                e = secure_getenv("HOME");
                if (e && path_is_absolute(e)) {
                        h = path_join(e, home_suffix);
                        if (!h)
                                return -ENOMEM;
                }
        }

        if (h) {
                r = strv_consume_prepend(&l, h);
                if (r < 0)
                        return -ENOMEM;
        }

        *ret = TAKE_PTR(l);
        return 0;
}

#if HAVE_SPLIT_BIN
#  define ARRAY_SBIN_BIN(x) x "sbin", x "bin"
#else
#  define ARRAY_SBIN_BIN(x) x "bin"
#endif

static int get_search(uint64_t type, char ***ret) {
        int r;

        assert(ret);

        switch (type) {

        case SD_PATH_SEARCH_BINARIES:
                return search_from_environment(ret,
                                               NULL,
                                               ".local/bin",
                                               "PATH",
                                               true,
                                               ARRAY_SBIN_BIN("/usr/local/"),
                                               ARRAY_SBIN_BIN("/usr/"),
                                               NULL);

        case SD_PATH_SEARCH_LIBRARY_PRIVATE:
                return search_from_environment(ret,
                                               NULL,
                                               ".local/lib",
                                               NULL,
                                               false,
                                               "/usr/local/lib",
                                               "/usr/lib",
                                               NULL);

        case SD_PATH_SEARCH_LIBRARY_ARCH:
                return search_from_environment(ret,
                                               NULL,
                                               ".local/lib/" LIB_ARCH_TUPLE,
                                               "LD_LIBRARY_PATH",
                                               true,
                                               LIBDIR,
                                               NULL);

        case SD_PATH_SEARCH_SHARED:
                return search_from_environment(ret,
                                               "XDG_DATA_HOME",
                                               ".local/share",
                                               "XDG_DATA_DIRS",
                                               false,
                                               "/usr/local/share",
                                               "/usr/share",
                                               NULL);

        case SD_PATH_SEARCH_CONFIGURATION_FACTORY:
                return search_from_environment(ret,
                                               NULL,
                                               NULL,
                                               NULL,
                                               false,
                                               "/usr/local/share/factory/etc",
                                               "/usr/share/factory/etc",
                                               NULL);

        case SD_PATH_SEARCH_STATE_FACTORY:
                return search_from_environment(ret,
                                               NULL,
                                               NULL,
                                               NULL,
                                               false,
                                               "/usr/local/share/factory/var",
                                               "/usr/share/factory/var",
                                               NULL);

        case SD_PATH_SEARCH_CONFIGURATION:
                return search_from_environment(ret,
                                               "XDG_CONFIG_HOME",
                                               ".config",
                                               "XDG_CONFIG_DIRS",
                                               false,
                                               "/etc",
                                               NULL);

        case SD_PATH_SEARCH_BINARIES_DEFAULT: {
                char **t = strv_split(default_PATH(), ":");
                if (!t)
                        return -ENOMEM;

                *ret = t;
                return 0;
        }

        case SD_PATH_SYSTEMD_SEARCH_SYSTEM_UNIT:
        case SD_PATH_SYSTEMD_SEARCH_USER_UNIT: {
                _cleanup_(lookup_paths_done) LookupPaths lp = {};
                RuntimeScope scope = type == SD_PATH_SYSTEMD_SEARCH_SYSTEM_UNIT ?
                        RUNTIME_SCOPE_SYSTEM : RUNTIME_SCOPE_USER;

                r = lookup_paths_init(&lp, scope, 0, NULL);
                if (r < 0)
                        return r;

                *ret = TAKE_PTR(lp.search_path);
                return 0;
        }

        case SD_PATH_SYSTEMD_SEARCH_SYSTEM_GENERATOR:
        case SD_PATH_SYSTEMD_SEARCH_USER_GENERATOR: {
                RuntimeScope scope = type == SD_PATH_SYSTEMD_SEARCH_SYSTEM_GENERATOR ?
                        RUNTIME_SCOPE_SYSTEM : RUNTIME_SCOPE_USER;
                char **t;

                t = generator_binary_paths(scope);
                if (!t)
                        return -ENOMEM;

                *ret = t;
                return 0;
        }

        case SD_PATH_SYSTEMD_SEARCH_SYSTEM_ENVIRONMENT_GENERATOR:
        case SD_PATH_SYSTEMD_SEARCH_USER_ENVIRONMENT_GENERATOR: {
                char **t;

                t = env_generator_binary_paths(type == SD_PATH_SYSTEMD_SEARCH_SYSTEM_ENVIRONMENT_GENERATOR ?
                                               RUNTIME_SCOPE_SYSTEM : RUNTIME_SCOPE_USER);
                if (!t)
                        return -ENOMEM;

                *ret = t;
                return 0;
        }

        case SD_PATH_SYSTEMD_SEARCH_NETWORK:
                return strv_from_nulstr(ret, NETWORK_DIRS_NULSTR);

        }

        return -EOPNOTSUPP;
}

_public_ int sd_path_lookup_strv(uint64_t type, const char *suffix, char ***paths) {
        _cleanup_strv_free_ char **l = NULL, **n = NULL;
        int r;

        assert_return(paths, -EINVAL);

        r = get_search(type, &l);
        if (r == -EOPNOTSUPP) {
                _cleanup_free_ char *t = NULL;

                r = get_path_alloc(type, suffix, &t);
                if (r < 0)
                        return r;

                l = new(char*, 2);
                if (!l)
                        return -ENOMEM;
                l[0] = TAKE_PTR(t);
                l[1] = NULL;

                *paths = TAKE_PTR(l);
                return 0;

        } else if (r < 0)
                return r;

        if (!suffix) {
                *paths = TAKE_PTR(l);
                return 0;
        }

        n = new(char*, strv_length(l)+1);
        if (!n)
                return -ENOMEM;

        char **j = n;
        STRV_FOREACH(i, l) {
                *j = path_join(*i, suffix);
                if (!*j)
                        return -ENOMEM;

                j++;
        }
        *j = NULL;

        *paths = TAKE_PTR(n);
        return 0;
}
Commit	Line	Data
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
9a00f57a	2
07630cea LP	3	#include "sd-path.h"
07630cea LP	4
b5efdb8a	5	#include "alloc-util.h"
9a00f57a	6	#include "architecture.h"
3ffd4af2	7	#include "fd-util.h"
0d39fa9c	8	#include "fileio.h"
fccb4486	9	#include "fs-util.h"
08af3cc5	10	#include "nulstr-util.h"
9c5bb203	11	#include "path-lookup.h"
9a00f57a	12	#include "path-util.h"
07630cea	13	#include "string-util.h"
9a00f57a	14	#include "strv.h"
b1d4f8e1	15	#include "user-util.h"
9a00f57a LP	16
	17	static int from_environment(const char envname, const char fallback, const char **ret) {
	18	assert(ret);
	19
	20	if (envname) {
	21	const char *e;
	22
	23	e = secure_getenv(envname);
	24	if (e && path_is_absolute(e)) {
	25	*ret = e;
	26	return 0;
	27	}
	28	}
	29
	30	if (fallback) {
	31	*ret = fallback;
	32	return 0;
	33	}
	34
	35	return -ENXIO;
	36	}
	37
	38	static int from_home_dir(const char envname, const char suffix, char buffer, const char ret) {
	39	_cleanup_free_ char *h = NULL;
9a00f57a LP	40	int r;
	41
	42	assert(suffix);
	43	assert(buffer);
	44	assert(ret);
	45
	46	if (envname) {
	47	const char *e = NULL;
	48
	49	e = secure_getenv(envname);
	50	if (e && path_is_absolute(e)) {
	51	*ret = e;
	52	return 0;
	53	}
	54	}
	55
	56	r = get_home_dir(&h);
	57	if (r < 0)
	58	return r;
	59
4ede9802	60	if (!path_extend(&h, suffix))
9a00f57a LP	61	return -ENOMEM;
9a00f57a LP	62
4ede9802 LP	63	*buffer = h;
4ede9802 LP	64	*ret = TAKE_PTR(h);
9a00f57a LP	65	return 0;
	66	}
	67
	68	static int from_user_dir(const char field, char buffer, const char *ret) {
	69	_cleanup_fclose_ FILE *f = NULL;
	70	_cleanup_free_ char *b = NULL;
b6b0cfaa EGP	71	_cleanup_free_ const char *fn = NULL;
b6b0cfaa EGP	72	const char *c = NULL;
9a00f57a LP	73	int r;
	74
	75	assert(field);
	76	assert(buffer);
	77	assert(ret);
	78
b6b0cfaa	79	r = from_home_dir("XDG_CONFIG_HOME", ".config", &b, &c);
9a00f57a LP	80	if (r < 0)
	81	return r;
	82
b910cc72	83	fn = path_join(c, "user-dirs.dirs");
b6b0cfaa EGP	84	if (!fn)
	85	return -ENOMEM;
	86
9a00f57a LP	87	f = fopen(fn, "re");
	88	if (!f) {
	89	if (errno == ENOENT)
	90	goto fallback;
	91
	92	return -errno;
	93	}
	94
0ff6ff2b	95	/* This is an awful parse, but it follows closely what xdg-user-dirs does upstream */
710bf2ae LP	96	for (;;) {
710bf2ae LP	97	_cleanup_free_ char *line = NULL;
0ff6ff2b	98	char p, e;
9a00f57a	99
0ff6ff2b	100	r = read_stripped_line(f, LONG_LINE_MAX, &line);
710bf2ae LP	101	if (r < 0)
	102	return r;
	103	if (r == 0)
	104	break;
	105
0ff6ff2b LP	106	p = startswith(line, field);
0ff6ff2b LP	107	if (!p)
9a00f57a LP	108	continue;
9a00f57a LP	109
9a00f57a LP	110	p += strspn(p, WHITESPACE);
	111
	112	if (*p != '=')
	113	continue;
	114	p++;
	115
	116	p += strspn(p, WHITESPACE);
	117
	118	if (*p != '"')
	119	continue;
	120	p++;
	121
	122	e = strrchr(p, '"');
	123	if (!e)
	124	continue;
	125	*e = 0;
	126
	127	/* Three syntaxes permitted: relative to $HOME, $HOME itself, and absolute path */
	128	if (startswith(p, "$HOME/")) {
	129	_cleanup_free_ char *h = NULL;
9a00f57a LP	130
	131	r = get_home_dir(&h);
	132	if (r < 0)
	133	return r;
	134
4ede9802	135	if (!path_extend(&h, p+5))
9a00f57a LP	136	return -ENOMEM;
9a00f57a LP	137
4ede9802 LP	138	*buffer = h;
4ede9802 LP	139	*ret = TAKE_PTR(h);
9a00f57a LP	140	return 0;
	141	} else if (streq(p, "$HOME")) {
	142
	143	r = get_home_dir(buffer);
	144	if (r < 0)
	145	return r;
	146
	147	ret = buffer;
	148	return 0;
	149	} else if (path_is_absolute(p)) {
	150	char *copy;
	151
	152	copy = strdup(p);
	153	if (!copy)
	154	return -ENOMEM;
	155
	156	*buffer = copy;
	157	*ret = copy;
	158	return 0;
	159	}
	160	}
	161
	162	fallback:
	163	/* The desktop directory defaults to $HOME/Desktop, the others to $HOME */
	164	if (streq(field, "XDG_DESKTOP_DIR")) {
	165	_cleanup_free_ char *h = NULL;
9a00f57a LP	166
	167	r = get_home_dir(&h);
	168	if (r < 0)
	169	return r;
	170
4ede9802	171	if (!path_extend(&h, "Desktop"))
9a00f57a LP	172	return -ENOMEM;
9a00f57a LP	173
4ede9802 LP	174	*buffer = h;
4ede9802 LP	175	*ret = TAKE_PTR(h);
9a00f57a	176	} else {
9a00f57a LP	177	r = get_home_dir(buffer);
	178	if (r < 0)
	179	return r;
	180
	181	ret = buffer;
	182	}
	183
	184	return 0;
	185	}
	186
	187	static int get_path(uint64_t type, char buffer, const char ret) {
	188	int r;
	189
	190	assert(buffer);
	191	assert(ret);
	192
	193	switch (type) {
	194
	195	case SD_PATH_TEMPORARY:
fccb4486	196	return tmp_dir(ret);
9a00f57a LP	197
9a00f57a LP	198	case SD_PATH_TEMPORARY_LARGE:
fccb4486	199	return var_tmp_dir(ret);
9a00f57a LP	200
	201	case SD_PATH_SYSTEM_BINARIES:
	202	*ret = "/usr/bin";
	203	return 0;
	204
	205	case SD_PATH_SYSTEM_INCLUDE:
	206	*ret = "/usr/include";
	207	return 0;
	208
	209	case SD_PATH_SYSTEM_LIBRARY_PRIVATE:
	210	*ret = "/usr/lib";
	211	return 0;
	212
	213	case SD_PATH_SYSTEM_LIBRARY_ARCH:
	214	*ret = LIBDIR;
	215	return 0;
	216
	217	case SD_PATH_SYSTEM_SHARED:
	218	*ret = "/usr/share";
	219	return 0;
	220
	221	case SD_PATH_SYSTEM_CONFIGURATION_FACTORY:
	222	*ret = "/usr/share/factory/etc";
	223	return 0;
	224
	225	case SD_PATH_SYSTEM_STATE_FACTORY:
	226	*ret = "/usr/share/factory/var";
	227	return 0;
	228
	229	case SD_PATH_SYSTEM_CONFIGURATION:
	230	*ret = "/etc";
	231	return 0;
	232
	233	case SD_PATH_SYSTEM_RUNTIME:
	234	*ret = "/run";
	235	return 0;
	236
	237	case SD_PATH_SYSTEM_RUNTIME_LOGS:
	238	*ret = "/run/log";
	239	return 0;
	240
	241	case SD_PATH_SYSTEM_STATE_PRIVATE:
	242	*ret = "/var/lib";
	243	return 0;
	244
	245	case SD_PATH_SYSTEM_STATE_LOGS:
	246	*ret = "/var/log";
	247	return 0;
	248
	249	case SD_PATH_SYSTEM_STATE_CACHE:
	250	*ret = "/var/cache";
	251	return 0;
	252
	253	case SD_PATH_SYSTEM_STATE_SPOOL:
	254	*ret = "/var/spool";
	255	return 0;
	256
	257	case SD_PATH_USER_BINARIES:
	258	return from_home_dir(NULL, ".local/bin", buffer, ret);
	259
	260	case SD_PATH_USER_LIBRARY_PRIVATE:
	261	return from_home_dir(NULL, ".local/lib", buffer, ret);
	262
	263	case SD_PATH_USER_LIBRARY_ARCH:
613e3a26	264	return from_home_dir(NULL, ".local/lib/" LIB_ARCH_TUPLE, buffer, ret);
9a00f57a LP	265
	266	case SD_PATH_USER_SHARED:
	267	return from_home_dir("XDG_DATA_HOME", ".local/share", buffer, ret);
	268
	269	case SD_PATH_USER_CONFIGURATION:
	270	return from_home_dir("XDG_CONFIG_HOME", ".config", buffer, ret);
	271
	272	case SD_PATH_USER_RUNTIME:
	273	return from_environment("XDG_RUNTIME_DIR", NULL, ret);
	274
	275	case SD_PATH_USER_STATE_CACHE:
	276	return from_home_dir("XDG_CACHE_HOME", ".cache", buffer, ret);
	277
9a653235 LP	278	case SD_PATH_USER_STATE_PRIVATE:
	279	return from_home_dir("XDG_STATE_HOME", ".local/state", buffer, ret);
	280
9a00f57a LP	281	case SD_PATH_USER:
	282	r = get_home_dir(buffer);
	283	if (r < 0)
	284	return r;
	285
	286	ret = buffer;
	287	return 0;
	288
	289	case SD_PATH_USER_DOCUMENTS:
	290	return from_user_dir("XDG_DOCUMENTS_DIR", buffer, ret);
	291
	292	case SD_PATH_USER_MUSIC:
	293	return from_user_dir("XDG_MUSIC_DIR", buffer, ret);
	294
	295	case SD_PATH_USER_PICTURES:
	296	return from_user_dir("XDG_PICTURES_DIR", buffer, ret);
	297
	298	case SD_PATH_USER_VIDEOS:
	299	return from_user_dir("XDG_VIDEOS_DIR", buffer, ret);
	300
	301	case SD_PATH_USER_DOWNLOAD:
	302	return from_user_dir("XDG_DOWNLOAD_DIR", buffer, ret);
	303
	304	case SD_PATH_USER_PUBLIC:
	305	return from_user_dir("XDG_PUBLICSHARE_DIR", buffer, ret);
	306
	307	case SD_PATH_USER_TEMPLATES:
	308	return from_user_dir("XDG_TEMPLATES_DIR", buffer, ret);
	309
	310	case SD_PATH_USER_DESKTOP:
	311	return from_user_dir("XDG_DESKTOP_DIR", buffer, ret);
9c5bb203	312
ccdf03b9	313	case SD_PATH_SYSTEMD_UTIL:
b0d3095f	314	*ret = PREFIX_NOSLASH "/lib/systemd";
9c5bb203 ZJS	315	return 0;
9c5bb203 ZJS	316
ccdf03b9	317	case SD_PATH_SYSTEMD_SYSTEM_UNIT:
835cf75a	318	*ret = SYSTEM_DATA_UNIT_DIR;
9c5bb203 ZJS	319	return 0;
9c5bb203 ZJS	320
ccdf03b9	321	case SD_PATH_SYSTEMD_SYSTEM_PRESET:
b0d3095f	322	*ret = PREFIX_NOSLASH "/lib/systemd/system-preset";
9c5bb203 ZJS	323	return 0;
9c5bb203 ZJS	324
ccdf03b9	325	case SD_PATH_SYSTEMD_USER_UNIT:
96d33e4a	326	*ret = USER_DATA_UNIT_DIR;
9c5bb203 ZJS	327	return 0;
9c5bb203 ZJS	328
ccdf03b9	329	case SD_PATH_SYSTEMD_USER_PRESET:
b0d3095f	330	*ret = PREFIX_NOSLASH "/lib/systemd/user-preset";
9c5bb203 ZJS	331	return 0;
9c5bb203 ZJS	332
ccdf03b9	333	case SD_PATH_SYSTEMD_SYSTEM_CONF:
96d33e4a	334	*ret = SYSTEM_CONFIG_UNIT_DIR;
9c5bb203 ZJS	335	return 0;
9c5bb203 ZJS	336
ccdf03b9	337	case SD_PATH_SYSTEMD_USER_CONF:
96d33e4a	338	*ret = USER_CONFIG_UNIT_DIR;
9c5bb203 ZJS	339	return 0;
9c5bb203 ZJS	340
ccdf03b9	341	case SD_PATH_SYSTEMD_SYSTEM_GENERATOR:
96d33e4a	342	*ret = SYSTEM_GENERATOR_DIR;
9c5bb203 ZJS	343	return 0;
9c5bb203 ZJS	344
ccdf03b9	345	case SD_PATH_SYSTEMD_USER_GENERATOR:
96d33e4a	346	*ret = USER_GENERATOR_DIR;
9c5bb203 ZJS	347	return 0;
9c5bb203 ZJS	348
ccdf03b9	349	case SD_PATH_SYSTEMD_SLEEP:
b0d3095f	350	*ret = PREFIX_NOSLASH "/lib/systemd/system-sleep";
9c5bb203 ZJS	351	return 0;
9c5bb203 ZJS	352
ccdf03b9	353	case SD_PATH_SYSTEMD_SHUTDOWN:
b0d3095f	354	*ret = PREFIX_NOSLASH "/lib/systemd/system-shutdown";
9c5bb203 ZJS	355	return 0;
9c5bb203 ZJS	356
ccdf03b9	357	case SD_PATH_TMPFILES:
9c5bb203 ZJS	358	*ret = "/usr/lib/tmpfiles.d";
	359	return 0;
	360
ccdf03b9	361	case SD_PATH_SYSUSERS:
b0d3095f	362	*ret = PREFIX_NOSLASH "/lib/sysusers.d";
9c5bb203 ZJS	363	return 0;
9c5bb203 ZJS	364
ccdf03b9	365	case SD_PATH_SYSCTL:
b0d3095f	366	*ret = PREFIX_NOSLASH "/lib/sysctl.d";
9c5bb203 ZJS	367	return 0;
9c5bb203 ZJS	368
ccdf03b9	369	case SD_PATH_BINFMT:
b0d3095f	370	*ret = PREFIX_NOSLASH "/lib/binfmt.d";
9c5bb203 ZJS	371	return 0;
9c5bb203 ZJS	372
ccdf03b9	373	case SD_PATH_MODULES_LOAD:
b0d3095f	374	*ret = PREFIX_NOSLASH "/lib/modules-load.d";
9c5bb203 ZJS	375	return 0;
9c5bb203 ZJS	376
ccdf03b9	377	case SD_PATH_CATALOG:
9c5bb203 ZJS	378	*ret = "/usr/lib/systemd/catalog";
9c5bb203 ZJS	379	return 0;
71006538 DT	380
	381	case SD_PATH_SYSTEMD_SYSTEM_ENVIRONMENT_GENERATOR:
	382	*ret = SYSTEM_ENV_GENERATOR_DIR;
	383	return 0;
	384
	385	case SD_PATH_SYSTEMD_USER_ENVIRONMENT_GENERATOR:
	386	*ret = USER_ENV_GENERATOR_DIR;
	387	return 0;
9a00f57a LP	388	}
9a00f57a LP	389
15411c0c	390	return -EOPNOTSUPP;
9a00f57a LP	391	}
9a00f57a LP	392
ce7eb6aa	393	static int get_path_alloc(uint64_t type, const char suffix, char *path) {
a13de89d	394	_cleanup_free_ char *buffer = NULL;
ce7eb6aa	395	char *buffer2 = NULL;
9a00f57a LP	396	const char *ret;
	397	int r;
	398
ce7eb6aa	399	assert(path);
9a00f57a	400
ce7eb6aa ZJS	401	r = get_path(type, &buffer, &ret);
	402	if (r < 0)
	403	return r;
9a00f57a	404
ce7eb6aa ZJS	405	if (suffix) {
	406	suffix += strspn(suffix, "/");
	407	buffer2 = path_join(ret, suffix);
	408	if (!buffer2)
	409	return -ENOMEM;
	410	} else if (!buffer) {
	411	buffer = strdup(ret);
9a00f57a LP	412	if (!buffer)
9a00f57a LP	413	return -ENOMEM;
9a00f57a LP	414	}
9a00f57a LP	415
ce7eb6aa ZJS	416	*path = buffer2 ?: TAKE_PTR(buffer);
	417	return 0;
	418	}
	419
	420	_public_ int sd_path_lookup(uint64_t type, const char suffix, char *path) {
	421	int r;
	422
	423	assert_return(path, -EINVAL);
	424
	425	r = get_path_alloc(type, suffix, path);
	426	if (r != -EOPNOTSUPP)
9a00f57a LP	427	return r;
9a00f57a LP	428
ce7eb6aa ZJS	429	/* Fall back to sd_path_lookup_strv */
	430	_cleanup_strv_free_ char **l = NULL;
	431	char *buffer;
9a00f57a	432
ce7eb6aa ZJS	433	r = sd_path_lookup_strv(type, suffix, &l);
	434	if (r < 0)
	435	return r;
9a00f57a	436
ce7eb6aa ZJS	437	buffer = strv_join(l, ":");
ce7eb6aa ZJS	438	if (!buffer)
9a00f57a LP	439	return -ENOMEM;
9a00f57a LP	440
ce7eb6aa	441	*path = buffer;
9a00f57a LP	442	return 0;
	443	}
	444
	445	static int search_from_environment(
c1fa6427	446	char ***ret,
9a00f57a LP	447	const char *env_home,
	448	const char *home_suffix,
	449	const char *env_search,
	450	bool env_search_sufficient,
	451	const char *first, ...) {
	452
623550af	453	_cleanup_strv_free_ char **l = NULL;
9a00f57a LP	454	const char *e;
9a00f57a LP	455	char *h = NULL;
9a00f57a LP	456	int r;
9a00f57a LP	457
c1fa6427	458	assert(ret);
9a00f57a LP	459
	460	if (env_search) {
	461	e = secure_getenv(env_search);
	462	if (e) {
	463	l = strv_split(e, ":");
	464	if (!l)
	465	return -ENOMEM;
	466
	467	if (env_search_sufficient) {
c1fa6427	468	*ret = TAKE_PTR(l);
9a00f57a LP	469	return 0;
	470	}
	471	}
	472	}
	473
	474	if (!l && first) {
	475	va_list ap;
	476
	477	va_start(ap, first);
	478	l = strv_new_ap(first, ap);
	479	va_end(ap);
	480
	481	if (!l)
	482	return -ENOMEM;
	483	}
	484
	485	if (env_home) {
	486	e = secure_getenv(env_home);
	487	if (e && path_is_absolute(e)) {
	488	h = strdup(e);
623550af	489	if (!h)
9a00f57a	490	return -ENOMEM;
9a00f57a LP	491	}
	492	}
	493
	494	if (!h && home_suffix) {
	495	e = secure_getenv("HOME");
	496	if (e && path_is_absolute(e)) {
657ee2d8	497	h = path_join(e, home_suffix);
623550af	498	if (!h)
9a00f57a	499	return -ENOMEM;
9a00f57a LP	500	}
	501	}
	502
	503	if (h) {
	504	r = strv_consume_prepend(&l, h);
623550af	505	if (r < 0)
9a00f57a	506	return -ENOMEM;
9a00f57a LP	507	}
9a00f57a LP	508
c1fa6427	509	*ret = TAKE_PTR(l);
9a00f57a LP	510	return 0;
	511	}
	512
671f0f8d ZJS	513	#if HAVE_SPLIT_BIN
	514	# define ARRAY_SBIN_BIN(x) x "sbin", x "bin"
	515	#else
	516	# define ARRAY_SBIN_BIN(x) x "bin"
	517	#endif
	518
c1fa6427	519	static int get_search(uint64_t type, char ***ret) {
9c5bb203	520	int r;
9a00f57a	521
c1fa6427	522	assert(ret);
9a00f57a	523
79893116	524	switch (type) {
9a00f57a LP	525
9a00f57a LP	526	case SD_PATH_SEARCH_BINARIES:
c1fa6427	527	return search_from_environment(ret,
9a00f57a LP	528	NULL,
	529	".local/bin",
	530	"PATH",
	531	true,
671f0f8d ZJS	532	ARRAY_SBIN_BIN("/usr/local/"),
671f0f8d ZJS	533	ARRAY_SBIN_BIN("/usr/"),
9a00f57a LP	534	NULL);
	535
	536	case SD_PATH_SEARCH_LIBRARY_PRIVATE:
c1fa6427	537	return search_from_environment(ret,
9a00f57a LP	538	NULL,
	539	".local/lib",
	540	NULL,
	541	false,
	542	"/usr/local/lib",
	543	"/usr/lib",
9a00f57a LP	544	NULL);
	545
	546	case SD_PATH_SEARCH_LIBRARY_ARCH:
c1fa6427	547	return search_from_environment(ret,
9a00f57a	548	NULL,
613e3a26	549	".local/lib/" LIB_ARCH_TUPLE,
9a00f57a LP	550	"LD_LIBRARY_PATH",
	551	true,
	552	LIBDIR,
9a00f57a LP	553	NULL);
	554
	555	case SD_PATH_SEARCH_SHARED:
c1fa6427	556	return search_from_environment(ret,
9a00f57a LP	557	"XDG_DATA_HOME",
	558	".local/share",
	559	"XDG_DATA_DIRS",
	560	false,
	561	"/usr/local/share",
	562	"/usr/share",
	563	NULL);
	564
	565	case SD_PATH_SEARCH_CONFIGURATION_FACTORY:
c1fa6427	566	return search_from_environment(ret,
9a00f57a LP	567	NULL,
	568	NULL,
	569	NULL,
	570	false,
	571	"/usr/local/share/factory/etc",
	572	"/usr/share/factory/etc",
	573	NULL);
	574
	575	case SD_PATH_SEARCH_STATE_FACTORY:
c1fa6427	576	return search_from_environment(ret,
9a00f57a LP	577	NULL,
	578	NULL,
	579	NULL,
	580	false,
	581	"/usr/local/share/factory/var",
	582	"/usr/share/factory/var",
	583	NULL);
	584
	585	case SD_PATH_SEARCH_CONFIGURATION:
c1fa6427	586	return search_from_environment(ret,
9a00f57a LP	587	"XDG_CONFIG_HOME",
	588	".config",
	589	"XDG_CONFIG_DIRS",
	590	false,
	591	"/etc",
	592	NULL);
e12d446b	593
0f36a4c8 ZJS	594	case SD_PATH_SEARCH_BINARIES_DEFAULT: {
	595	char **t = strv_split(default_PATH(), ":");
	596	if (!t)
	597	return -ENOMEM;
	598
c1fa6427	599	*ret = t;
0f36a4c8 ZJS	600	return 0;
0f36a4c8 ZJS	601	}
e12d446b	602
ccdf03b9 LP	603	case SD_PATH_SYSTEMD_SEARCH_SYSTEM_UNIT:
ccdf03b9 LP	604	case SD_PATH_SYSTEMD_SEARCH_USER_UNIT: {
7dfc7139	605	_cleanup_(lookup_paths_done) LookupPaths lp = {};
4870133b LP	606	RuntimeScope scope = type == SD_PATH_SYSTEMD_SEARCH_SYSTEM_UNIT ?
4870133b LP	607	RUNTIME_SCOPE_SYSTEM : RUNTIME_SCOPE_USER;
9c5bb203 ZJS	608
	609	r = lookup_paths_init(&lp, scope, 0, NULL);
	610	if (r < 0)
	611	return r;
e12d446b	612
c1fa6427	613	*ret = TAKE_PTR(lp.search_path);
9c5bb203	614	return 0;
a7addf32	615	}
9a00f57a	616
ccdf03b9 LP	617	case SD_PATH_SYSTEMD_SEARCH_SYSTEM_GENERATOR:
ccdf03b9 LP	618	case SD_PATH_SYSTEMD_SEARCH_USER_GENERATOR: {
4870133b LP	619	RuntimeScope scope = type == SD_PATH_SYSTEMD_SEARCH_SYSTEM_GENERATOR ?
4870133b LP	620	RUNTIME_SCOPE_SYSTEM : RUNTIME_SCOPE_USER;
9c5bb203	621	char **t;
9c5bb203 ZJS	622
	623	t = generator_binary_paths(scope);
	624	if (!t)
	625	return -ENOMEM;
	626
c1fa6427	627	*ret = t;
9c5bb203	628	return 0;
f1bb691a ZJS	629	}
f1bb691a ZJS	630
71006538 DT	631	case SD_PATH_SYSTEMD_SEARCH_SYSTEM_ENVIRONMENT_GENERATOR:
	632	case SD_PATH_SYSTEMD_SEARCH_USER_ENVIRONMENT_GENERATOR: {
	633	char **t;
	634
4870133b LP	635	t = env_generator_binary_paths(type == SD_PATH_SYSTEMD_SEARCH_SYSTEM_ENVIRONMENT_GENERATOR ?
4870133b LP	636	RUNTIME_SCOPE_SYSTEM : RUNTIME_SCOPE_USER);
71006538 DT	637	if (!t)
	638	return -ENOMEM;
	639
c1fa6427	640	*ret = t;
71006538 DT	641	return 0;
	642	}
	643
ccdf03b9	644	case SD_PATH_SYSTEMD_SEARCH_NETWORK:
c1fa6427	645	return strv_from_nulstr(ret, NETWORK_DIRS_NULSTR);
f1bb691a ZJS	646
f1bb691a ZJS	647	}
9c5bb203	648
15411c0c	649	return -EOPNOTSUPP;
9a00f57a LP	650	}
9a00f57a LP	651
51327bcc	652	_public_ int sd_path_lookup_strv(uint64_t type, const char suffix, char **paths) {
a605e46f	653	_cleanup_strv_free_ char l = NULL, n = NULL;
9a00f57a LP	654	int r;
	655
	656	assert_return(paths, -EINVAL);
	657
ce7eb6aa ZJS	658	r = get_search(type, &l);
	659	if (r == -EOPNOTSUPP) {
	660	_cleanup_free_ char *t = NULL;
9a00f57a	661
ce7eb6aa	662	r = get_path_alloc(type, suffix, &t);
9a00f57a LP	663	if (r < 0)
	664	return r;
	665
	666	l = new(char*, 2);
ce7eb6aa	667	if (!l)
9a00f57a	668	return -ENOMEM;
ce7eb6aa	669	l[0] = TAKE_PTR(t);
9a00f57a LP	670	l[1] = NULL;
9a00f57a LP	671
a605e46f	672	*paths = TAKE_PTR(l);
9a00f57a	673	return 0;
9a00f57a	674
ce7eb6aa	675	} else if (r < 0)
9a00f57a LP	676	return r;
	677
	678	if (!suffix) {
a605e46f	679	*paths = TAKE_PTR(l);
9a00f57a LP	680	return 0;
	681	}
	682
	683	n = new(char*, strv_length(l)+1);
a605e46f	684	if (!n)
9a00f57a	685	return -ENOMEM;
9a00f57a	686
de010b0b	687	char **j = n;
9a00f57a	688	STRV_FOREACH(i, l) {
657ee2d8	689	j = path_join(i, suffix);
a605e46f	690	if (!*j)
9a00f57a	691	return -ENOMEM;
9a00f57a LP	692
	693	j++;
	694	}
9a00f57a	695	*j = NULL;
ce7eb6aa	696
a605e46f	697	*paths = TAKE_PTR(n);
9a00f57a LP	698	return 0;
9a00f57a LP	699	}