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

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

#include "sd-path.h"

#include "alloc-util.h"
#include "architecture.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "missing.h"
#include "path-util.h"
#include "string-util.h"
#include "strv.h"
#include "user-util.h"
#include "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;
        char *cc = 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;

        cc = path_join(h, suffix);
        if (!cc)
                return -ENOMEM;

        *buffer = cc;
        *ret = cc;
        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;
        size_t n;
        int r;

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

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

        fn = strappend(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 */

        n = strlen(field);
        for (;;) {
                _cleanup_free_ char *line = NULL;
                char *l, *p, *e;

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

                l = strstrip(line);

                if (!strneq(l, field, n))
                        continue;

                p = l + n;
                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;
                        char *cc;

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

                        cc = strappend(h, p+5);
                        if (!cc)
                                return -ENOMEM;

                        *buffer = cc;
                        *ret = cc;
                        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;
                char *cc;

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

                cc = strappend(h, "/Desktop");
                if (!cc)
                        return -ENOMEM;

                *buffer = cc;
                *ret = cc;
        } 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:
                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);
        }

        return -EOPNOTSUPP;
}

_public_ int sd_path_home(uint64_t type, const char *suffix, char **path) {
        char *buffer = NULL, *cc;
        const char *ret;
        int r;

        assert_return(path, -EINVAL);

        if (IN_SET(type,
                   SD_PATH_SEARCH_BINARIES,
                   SD_PATH_SEARCH_BINARIES_DEFAULT,
                   SD_PATH_SEARCH_LIBRARY_PRIVATE,
                   SD_PATH_SEARCH_LIBRARY_ARCH,
                   SD_PATH_SEARCH_SHARED,
                   SD_PATH_SEARCH_CONFIGURATION_FACTORY,
                   SD_PATH_SEARCH_STATE_FACTORY,
                   SD_PATH_SEARCH_CONFIGURATION)) {

                _cleanup_strv_free_ char **l = NULL;

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

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

                *path = buffer;
                return 0;
        }

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

        if (!suffix) {
                if (!buffer) {
                        buffer = strdup(ret);
                        if (!buffer)
                                return -ENOMEM;
                }

                *path = buffer;
                return 0;
        }

        suffix += strspn(suffix, "/");
        cc = path_join(ret, suffix);

        free(buffer);

        if (!cc)
                return -ENOMEM;

        *path = cc;
        return 0;
}

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

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

        assert(list);

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

                        if (env_search_sufficient) {
                                *list = 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) {
                                strv_free(l);
                                return -ENOMEM;
                        }
                }
        }

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

                        if (!h) {
                                strv_free(l);
                                return -ENOMEM;
                        }
                }
        }

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

        *list = 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 ***list) {

        assert(list);

        switch(type) {

        case SD_PATH_SEARCH_BINARIES:
                return search_from_environment(list,
                                               NULL,
                                               ".local/bin",
                                               "PATH",
                                               true,
                                               ARRAY_SBIN_BIN("/usr/local/"),
                                               ARRAY_SBIN_BIN("/usr/"),
#if HAVE_SPLIT_USR
                                               ARRAY_SBIN_BIN("/"),
#endif
                                               NULL);

        case SD_PATH_SEARCH_LIBRARY_PRIVATE:
                return search_from_environment(list,
                                               NULL,
                                               ".local/lib",
                                               NULL,
                                               false,
                                               "/usr/local/lib",
                                               "/usr/lib",
#if HAVE_SPLIT_USR
                                               "/lib",
#endif
                                               NULL);

        case SD_PATH_SEARCH_LIBRARY_ARCH:
                return search_from_environment(list,
                                               NULL,
                                               ".local/lib/" LIB_ARCH_TUPLE,
                                               "LD_LIBRARY_PATH",
                                               true,
                                               LIBDIR,
#if HAVE_SPLIT_USR
                                               ROOTLIBDIR,
#endif
                                               NULL);

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

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

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

        case SD_PATH_SEARCH_BINARIES_DEFAULT: {
                char **t;

                t = strv_split_nulstr(DEFAULT_PATH_NULSTR);
                if (!t)
                        return -ENOMEM;

                *list = t;
                return 0;
        }}

        return -EOPNOTSUPP;
}

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

        assert_return(paths, -EINVAL);

        if (!IN_SET(type,
                    SD_PATH_SEARCH_BINARIES,
                    SD_PATH_SEARCH_BINARIES_DEFAULT,
                    SD_PATH_SEARCH_LIBRARY_PRIVATE,
                    SD_PATH_SEARCH_LIBRARY_ARCH,
                    SD_PATH_SEARCH_SHARED,
                    SD_PATH_SEARCH_CONFIGURATION_FACTORY,
                    SD_PATH_SEARCH_STATE_FACTORY,
                    SD_PATH_SEARCH_CONFIGURATION)) {

                char *p;

                r = sd_path_home(type, suffix, &p);
                if (r < 0)
                        return r;

                l = new(char*, 2);
                if (!l) {
                        free(p);
                        return -ENOMEM;
                }

                l[0] = p;
                l[1] = NULL;

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

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

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

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

        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
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
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"
07630cea	10	#include "missing.h"
9a00f57a	11	#include "path-util.h"
07630cea	12	#include "string-util.h"
9a00f57a	13	#include "strv.h"
b1d4f8e1	14	#include "user-util.h"
07630cea	15	#include "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;
	40	char *cc = NULL;
	41	int r;
	42
	43	assert(suffix);
	44	assert(buffer);
	45	assert(ret);
	46
	47	if (envname) {
	48	const char *e = NULL;
	49
	50	e = secure_getenv(envname);
	51	if (e && path_is_absolute(e)) {
	52	*ret = e;
	53	return 0;
	54	}
	55	}
	56
	57	r = get_home_dir(&h);
	58	if (r < 0)
	59	return r;
	60
657ee2d8	61	cc = path_join(h, suffix);
9a00f57a LP	62	if (!cc)
	63	return -ENOMEM;
	64
	65	*buffer = cc;
	66	*ret = cc;
	67	return 0;
	68	}
	69
	70	static int from_user_dir(const char field, char buffer, const char *ret) {
	71	_cleanup_fclose_ FILE *f = NULL;
	72	_cleanup_free_ char *b = NULL;
b6b0cfaa EGP	73	_cleanup_free_ const char *fn = NULL;
b6b0cfaa EGP	74	const char *c = NULL;
9a00f57a LP	75	size_t n;
	76	int r;
	77
	78	assert(field);
	79	assert(buffer);
	80	assert(ret);
	81
b6b0cfaa	82	r = from_home_dir("XDG_CONFIG_HOME", ".config", &b, &c);
9a00f57a LP	83	if (r < 0)
	84	return r;
	85
b6b0cfaa EGP	86	fn = strappend(c, "/user-dirs.dirs");
	87	if (!fn)
	88	return -ENOMEM;
	89
9a00f57a LP	90	f = fopen(fn, "re");
	91	if (!f) {
	92	if (errno == ENOENT)
	93	goto fallback;
	94
	95	return -errno;
	96	}
	97
	98	/* This is an awful parse, but it follows closely what
	99	* xdg-user-dirs does upstream */
	100
	101	n = strlen(field);
710bf2ae LP	102	for (;;) {
710bf2ae LP	103	_cleanup_free_ char *line = NULL;
9a00f57a LP	104	char l, p, *e;
9a00f57a LP	105
710bf2ae LP	106	r = read_line(f, LONG_LINE_MAX, &line);
	107	if (r < 0)
	108	return r;
	109	if (r == 0)
	110	break;
	111
9a00f57a LP	112	l = strstrip(line);
	113
	114	if (!strneq(l, field, n))
	115	continue;
	116
	117	p = l + n;
	118	p += strspn(p, WHITESPACE);
	119
	120	if (*p != '=')
	121	continue;
	122	p++;
	123
	124	p += strspn(p, WHITESPACE);
	125
	126	if (*p != '"')
	127	continue;
	128	p++;
	129
	130	e = strrchr(p, '"');
	131	if (!e)
	132	continue;
	133	*e = 0;
	134
	135	/* Three syntaxes permitted: relative to $HOME, $HOME itself, and absolute path */
	136	if (startswith(p, "$HOME/")) {
	137	_cleanup_free_ char *h = NULL;
	138	char *cc;
	139
	140	r = get_home_dir(&h);
	141	if (r < 0)
	142	return r;
	143
	144	cc = strappend(h, p+5);
	145	if (!cc)
	146	return -ENOMEM;
	147
	148	*buffer = cc;
	149	*ret = cc;
	150	return 0;
	151	} else if (streq(p, "$HOME")) {
	152
	153	r = get_home_dir(buffer);
	154	if (r < 0)
	155	return r;
	156
	157	ret = buffer;
	158	return 0;
	159	} else if (path_is_absolute(p)) {
	160	char *copy;
	161
	162	copy = strdup(p);
	163	if (!copy)
	164	return -ENOMEM;
	165
	166	*buffer = copy;
	167	*ret = copy;
	168	return 0;
	169	}
	170	}
	171
	172	fallback:
	173	/* The desktop directory defaults to $HOME/Desktop, the others to $HOME */
	174	if (streq(field, "XDG_DESKTOP_DIR")) {
	175	_cleanup_free_ char *h = NULL;
176	char *cc;
177
178	r = get_home_dir(&h);
179	if (r < 0)
180	return r;
181
182	cc = strappend(h, "/Desktop");
183	if (!cc)
184	return -ENOMEM;
185
186	*buffer = cc;
187	*ret = cc;
188	} else {
189
190	r = get_home_dir(buffer);
191	if (r < 0)
192	return r;
193
194	ret = buffer;
195	}
196
197	return 0;
198	}
199
200	static int get_path(uint64_t type, char buffer, const char ret) {
201	int r;
202
203	assert(buffer);
204	assert(ret);
205
206	switch (type) {
207
208	case SD_PATH_TEMPORARY:
fccb4486	209	return tmp_dir(ret);
9a00f57a LP	210
9a00f57a LP	211	case SD_PATH_TEMPORARY_LARGE:
fccb4486	212	return var_tmp_dir(ret);
9a00f57a LP	213
	214	case SD_PATH_SYSTEM_BINARIES:
	215	*ret = "/usr/bin";
	216	return 0;
	217
	218	case SD_PATH_SYSTEM_INCLUDE:
	219	*ret = "/usr/include";
	220	return 0;
	221
	222	case SD_PATH_SYSTEM_LIBRARY_PRIVATE:
	223	*ret = "/usr/lib";
	224	return 0;
	225
	226	case SD_PATH_SYSTEM_LIBRARY_ARCH:
	227	*ret = LIBDIR;
	228	return 0;
	229
	230	case SD_PATH_SYSTEM_SHARED:
	231	*ret = "/usr/share";
	232	return 0;
	233
	234	case SD_PATH_SYSTEM_CONFIGURATION_FACTORY:
	235	*ret = "/usr/share/factory/etc";
	236	return 0;
	237
	238	case SD_PATH_SYSTEM_STATE_FACTORY:
	239	*ret = "/usr/share/factory/var";
	240	return 0;
	241
	242	case SD_PATH_SYSTEM_CONFIGURATION:
	243	*ret = "/etc";
	244	return 0;
	245
	246	case SD_PATH_SYSTEM_RUNTIME:
	247	*ret = "/run";
	248	return 0;
	249
	250	case SD_PATH_SYSTEM_RUNTIME_LOGS:
	251	*ret = "/run/log";
	252	return 0;
	253
	254	case SD_PATH_SYSTEM_STATE_PRIVATE:
	255	*ret = "/var/lib";
	256	return 0;
	257
	258	case SD_PATH_SYSTEM_STATE_LOGS:
	259	*ret = "/var/log";
	260	return 0;
	261
	262	case SD_PATH_SYSTEM_STATE_CACHE:
	263	*ret = "/var/cache";
	264	return 0;
	265
	266	case SD_PATH_SYSTEM_STATE_SPOOL:
	267	*ret = "/var/spool";
	268	return 0;
	269
	270	case SD_PATH_USER_BINARIES:
	271	return from_home_dir(NULL, ".local/bin", buffer, ret);
	272
	273	case SD_PATH_USER_LIBRARY_PRIVATE:
	274	return from_home_dir(NULL, ".local/lib", buffer, ret);
	275
	276	case SD_PATH_USER_LIBRARY_ARCH:
613e3a26	277	return from_home_dir(NULL, ".local/lib/" LIB_ARCH_TUPLE, buffer, ret);
9a00f57a LP	278
	279	case SD_PATH_USER_SHARED:
	280	return from_home_dir("XDG_DATA_HOME", ".local/share", buffer, ret);
	281
	282	case SD_PATH_USER_CONFIGURATION:
	283	return from_home_dir("XDG_CONFIG_HOME", ".config", buffer, ret);
	284
	285	case SD_PATH_USER_RUNTIME:
	286	return from_environment("XDG_RUNTIME_DIR", NULL, ret);
	287
	288	case SD_PATH_USER_STATE_CACHE:
	289	return from_home_dir("XDG_CACHE_HOME", ".cache", buffer, ret);
	290
	291	case SD_PATH_USER:
	292	r = get_home_dir(buffer);
	293	if (r < 0)
	294	return r;
	295
	296	ret = buffer;
	297	return 0;
	298
	299	case SD_PATH_USER_DOCUMENTS:
	300	return from_user_dir("XDG_DOCUMENTS_DIR", buffer, ret);
	301
	302	case SD_PATH_USER_MUSIC:
	303	return from_user_dir("XDG_MUSIC_DIR", buffer, ret);
	304
	305	case SD_PATH_USER_PICTURES:
	306	return from_user_dir("XDG_PICTURES_DIR", buffer, ret);
	307
	308	case SD_PATH_USER_VIDEOS:
	309	return from_user_dir("XDG_VIDEOS_DIR", buffer, ret);
	310
	311	case SD_PATH_USER_DOWNLOAD:
	312	return from_user_dir("XDG_DOWNLOAD_DIR", buffer, ret);
	313
	314	case SD_PATH_USER_PUBLIC:
	315	return from_user_dir("XDG_PUBLICSHARE_DIR", buffer, ret);
	316
	317	case SD_PATH_USER_TEMPLATES:
	318	return from_user_dir("XDG_TEMPLATES_DIR", buffer, ret);
	319
	320	case SD_PATH_USER_DESKTOP:
	321	return from_user_dir("XDG_DESKTOP_DIR", buffer, ret);
	322	}
	323
15411c0c	324	return -EOPNOTSUPP;
9a00f57a LP	325	}
9a00f57a LP	326
2de30868	327	_public_ int sd_path_home(uint64_t type, const char suffix, char *path) {
9a00f57a LP	328	char buffer = NULL, cc;
	329	const char *ret;
	330	int r;
	331
	332	assert_return(path, -EINVAL);
	333
	334	if (IN_SET(type,
	335	SD_PATH_SEARCH_BINARIES,
e12d446b	336	SD_PATH_SEARCH_BINARIES_DEFAULT,
9a00f57a LP	337	SD_PATH_SEARCH_LIBRARY_PRIVATE,
	338	SD_PATH_SEARCH_LIBRARY_ARCH,
	339	SD_PATH_SEARCH_SHARED,
	340	SD_PATH_SEARCH_CONFIGURATION_FACTORY,
	341	SD_PATH_SEARCH_STATE_FACTORY,
	342	SD_PATH_SEARCH_CONFIGURATION)) {
	343
	344	_cleanup_strv_free_ char **l = NULL;
	345
	346	r = sd_path_search(type, suffix, &l);
	347	if (r < 0)
	348	return r;
	349
	350	buffer = strv_join(l, ":");
	351	if (!buffer)
	352	return -ENOMEM;
	353
	354	*path = buffer;
	355	return 0;
	356	}
	357
	358	r = get_path(type, &buffer, &ret);
	359	if (r < 0)
	360	return r;
	361
	362	if (!suffix) {
	363	if (!buffer) {
	364	buffer = strdup(ret);
	365	if (!buffer)
	366	return -ENOMEM;
	367	}
	368
	369	*path = buffer;
	370	return 0;
	371	}
	372
	373	suffix += strspn(suffix, "/");
657ee2d8	374	cc = path_join(ret, suffix);
9a00f57a LP	375
	376	free(buffer);
	377
	378	if (!cc)
	379	return -ENOMEM;
	380
	381	*path = cc;
	382	return 0;
	383	}
	384
	385	static int search_from_environment(
	386	char ***list,
	387	const char *env_home,
	388	const char *home_suffix,
	389	const char *env_search,
	390	bool env_search_sufficient,
	391	const char *first, ...) {
	392
	393	const char *e;
	394	char *h = NULL;
	395	char **l = NULL;
	396	int r;
	397
	398	assert(list);
	399
	400	if (env_search) {
	401	e = secure_getenv(env_search);
	402	if (e) {
	403	l = strv_split(e, ":");
	404	if (!l)
	405	return -ENOMEM;
	406
	407	if (env_search_sufficient) {
	408	*list = l;
	409	return 0;
	410	}
	411	}
	412	}
	413
	414	if (!l && first) {
	415	va_list ap;
	416
	417	va_start(ap, first);
	418	l = strv_new_ap(first, ap);
	419	va_end(ap);
	420
	421	if (!l)
	422	return -ENOMEM;
	423	}
	424
	425	if (env_home) {
	426	e = secure_getenv(env_home);
	427	if (e && path_is_absolute(e)) {
	428	h = strdup(e);
	429	if (!h) {
	430	strv_free(l);
	431	return -ENOMEM;
	432	}
	433	}
	434	}
	435
	436	if (!h && home_suffix) {
	437	e = secure_getenv("HOME");
	438	if (e && path_is_absolute(e)) {
657ee2d8	439	h = path_join(e, home_suffix);
9a00f57a LP	440
	441	if (!h) {
	442	strv_free(l);
	443	return -ENOMEM;
	444	}
	445	}
	446	}
	447
	448	if (h) {
	449	r = strv_consume_prepend(&l, h);
	450	if (r < 0) {
	451	strv_free(l);
	452	return -ENOMEM;
	453	}
	454	}
	455
	456	*list = l;
	457	return 0;
	458	}
	459
671f0f8d ZJS	460	#if HAVE_SPLIT_BIN
	461	# define ARRAY_SBIN_BIN(x) x "sbin", x "bin"
	462	#else
	463	# define ARRAY_SBIN_BIN(x) x "bin"
	464	#endif
	465
9a00f57a LP	466	static int get_search(uint64_t type, char ***list) {
	467
	468	assert(list);
	469
	470	switch(type) {
	471
	472	case SD_PATH_SEARCH_BINARIES:
	473	return search_from_environment(list,
	474	NULL,
	475	".local/bin",
	476	"PATH",
	477	true,
671f0f8d ZJS	478	ARRAY_SBIN_BIN("/usr/local/"),
671f0f8d ZJS	479	ARRAY_SBIN_BIN("/usr/"),
349cc4a5	480	#if HAVE_SPLIT_USR
671f0f8d	481	ARRAY_SBIN_BIN("/"),
9a00f57a LP	482	#endif
	483	NULL);
	484
	485	case SD_PATH_SEARCH_LIBRARY_PRIVATE:
	486	return search_from_environment(list,
	487	NULL,
	488	".local/lib",
	489	NULL,
	490	false,
	491	"/usr/local/lib",
	492	"/usr/lib",
349cc4a5	493	#if HAVE_SPLIT_USR
9a00f57a LP	494	"/lib",
	495	#endif
	496	NULL);
	497
	498	case SD_PATH_SEARCH_LIBRARY_ARCH:
	499	return search_from_environment(list,
	500	NULL,
613e3a26	501	".local/lib/" LIB_ARCH_TUPLE,
9a00f57a LP	502	"LD_LIBRARY_PATH",
	503	true,
	504	LIBDIR,
349cc4a5	505	#if HAVE_SPLIT_USR
9a00f57a LP	506	ROOTLIBDIR,
	507	#endif
	508	NULL);
	509
	510	case SD_PATH_SEARCH_SHARED:
	511	return search_from_environment(list,
	512	"XDG_DATA_HOME",
	513	".local/share",
	514	"XDG_DATA_DIRS",
	515	false,
	516	"/usr/local/share",
	517	"/usr/share",
	518	NULL);
	519
	520	case SD_PATH_SEARCH_CONFIGURATION_FACTORY:
	521	return search_from_environment(list,
	522	NULL,
	523	NULL,
	524	NULL,
	525	false,
	526	"/usr/local/share/factory/etc",
	527	"/usr/share/factory/etc",
	528	NULL);
	529
	530	case SD_PATH_SEARCH_STATE_FACTORY:
	531	return search_from_environment(list,
	532	NULL,
	533	NULL,
	534	NULL,
	535	false,
	536	"/usr/local/share/factory/var",
	537	"/usr/share/factory/var",
	538	NULL);
	539
	540	case SD_PATH_SEARCH_CONFIGURATION:
	541	return search_from_environment(list,
	542	"XDG_CONFIG_HOME",
	543	".config",
	544	"XDG_CONFIG_DIRS",
	545	false,
	546	"/etc",
	547	NULL);
e12d446b ZJS	548
	549	case SD_PATH_SEARCH_BINARIES_DEFAULT: {
	550	char **t;
	551
	552	t = strv_split_nulstr(DEFAULT_PATH_NULSTR);
	553	if (!t)
	554	return -ENOMEM;
	555
	556	*list = t;
	557	return 0;
	558	}}
9a00f57a	559
15411c0c	560	return -EOPNOTSUPP;
9a00f57a LP	561	}
9a00f57a LP	562
2de30868	563	_public_ int sd_path_search(uint64_t type, const char suffix, char **paths) {
a605e46f FB	564	char i, j;
a605e46f FB	565	_cleanup_strv_free_ char l = NULL, n = NULL;
9a00f57a LP	566	int r;
	567
	568	assert_return(paths, -EINVAL);
	569
	570	if (!IN_SET(type,
	571	SD_PATH_SEARCH_BINARIES,
e12d446b	572	SD_PATH_SEARCH_BINARIES_DEFAULT,
9a00f57a LP	573	SD_PATH_SEARCH_LIBRARY_PRIVATE,
	574	SD_PATH_SEARCH_LIBRARY_ARCH,
	575	SD_PATH_SEARCH_SHARED,
	576	SD_PATH_SEARCH_CONFIGURATION_FACTORY,
	577	SD_PATH_SEARCH_STATE_FACTORY,
	578	SD_PATH_SEARCH_CONFIGURATION)) {
	579
	580	char *p;
	581
	582	r = sd_path_home(type, suffix, &p);
	583	if (r < 0)
	584	return r;
	585
	586	l = new(char*, 2);
	587	if (!l) {
	588	free(p);
	589	return -ENOMEM;
	590	}
	591
	592	l[0] = p;
	593	l[1] = NULL;
	594
a605e46f	595	*paths = TAKE_PTR(l);
9a00f57a LP	596	return 0;
	597	}
	598
	599	r = get_search(type, &l);
	600	if (r < 0)
	601	return r;
	602
	603	if (!suffix) {
a605e46f	604	*paths = TAKE_PTR(l);
9a00f57a LP	605	return 0;
	606	}
	607
	608	n = new(char*, strv_length(l)+1);
a605e46f	609	if (!n)
9a00f57a	610	return -ENOMEM;
9a00f57a LP	611
	612	j = n;
	613	STRV_FOREACH(i, l) {
657ee2d8	614	j = path_join(i, suffix);
a605e46f	615	if (!*j)
9a00f57a	616	return -ENOMEM;
9a00f57a LP	617
	618	j++;
	619	}
	620
	621	*j = NULL;
a605e46f	622	*paths = TAKE_PTR(n);
9a00f57a LP	623	return 0;
9a00f57a LP	624	}