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

/***
  This file is part of systemd.

  Copyright 2014 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#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;

        if (endswith(h, "/"))
                cc = strappend(h, suffix);
        else
                cc = strjoin(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;
        char line[LINE_MAX];
        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);
        FOREACH_LINE(line, f, return -errno) {
                char *l, *p, *e;

                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_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, "/");

        if (endswith(ret, "/"))
                cc = strappend(ret, suffix);
        else
                cc = strjoin(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)) {
                        if (endswith(e, "/"))
                                h = strappend(e, home_suffix);
                        else
                                h = strjoin(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;
}

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,
                                               "/usr/local/sbin",
                                               "/usr/local/bin",
                                               "/usr/sbin",
                                               "/usr/bin",
#if HAVE_SPLIT_USR
                                               "/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);
        }

        return -EOPNOTSUPP;
}

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

        assert_return(paths, -EINVAL);

        if (!IN_SET(type,
                    SD_PATH_SEARCH_BINARIES,
                    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 = l;
                return 0;
        }

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

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

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

        j = n;
        STRV_FOREACH(i, l) {

                if (endswith(*i, "/"))
                        *j = strappend(*i, suffix);
                else
                        *j = strjoin(*i, "/", suffix);

                if (!*j) {
                        strv_free(l);
                        strv_free(n);
                        return -ENOMEM;
                }

                j++;
        }

        *j = NULL;
        *paths = n;
        return 0;
}
Commit	Line	Data
9a00f57a LP	1	/***
	2	This file is part of systemd.
	3
	4	Copyright 2014 Lennart Poettering
	5
	6	systemd is free software; you can redistribute it and/or modify it
	7	under the terms of the GNU Lesser General Public License as published by
	8	the Free Software Foundation; either version 2.1 of the License, or
	9	(at your option) any later version.
	10
	11	systemd is distributed in the hope that it will be useful, but
	12	WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	Lesser General Public License for more details.
	15
	16	You should have received a copy of the GNU Lesser General Public License
	17	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	18	***/
	19
07630cea LP	20	#include "sd-path.h"
07630cea LP	21
b5efdb8a	22	#include "alloc-util.h"
9a00f57a	23	#include "architecture.h"
3ffd4af2	24	#include "fd-util.h"
0d39fa9c	25	#include "fileio.h"
fccb4486	26	#include "fs-util.h"
07630cea	27	#include "missing.h"
9a00f57a	28	#include "path-util.h"
07630cea	29	#include "string-util.h"
9a00f57a	30	#include "strv.h"
b1d4f8e1	31	#include "user-util.h"
07630cea	32	#include "util.h"
9a00f57a LP	33
	34	static int from_environment(const char envname, const char fallback, const char **ret) {
	35	assert(ret);
	36
	37	if (envname) {
	38	const char *e;
	39
	40	e = secure_getenv(envname);
	41	if (e && path_is_absolute(e)) {
	42	*ret = e;
	43	return 0;
	44	}
	45	}
	46
	47	if (fallback) {
	48	*ret = fallback;
	49	return 0;
	50	}
	51
	52	return -ENXIO;
	53	}
	54
	55	static int from_home_dir(const char envname, const char suffix, char buffer, const char ret) {
	56	_cleanup_free_ char *h = NULL;
	57	char *cc = NULL;
	58	int r;
	59
	60	assert(suffix);
	61	assert(buffer);
	62	assert(ret);
	63
	64	if (envname) {
	65	const char *e = NULL;
	66
	67	e = secure_getenv(envname);
	68	if (e && path_is_absolute(e)) {
	69	*ret = e;
	70	return 0;
	71	}
	72	}
	73
	74	r = get_home_dir(&h);
	75	if (r < 0)
	76	return r;
	77
	78	if (endswith(h, "/"))
	79	cc = strappend(h, suffix);
	80	else
605405c6	81	cc = strjoin(h, "/", suffix);
9a00f57a LP	82	if (!cc)
	83	return -ENOMEM;
	84
	85	*buffer = cc;
	86	*ret = cc;
	87	return 0;
	88	}
	89
	90	static int from_user_dir(const char field, char buffer, const char *ret) {
	91	_cleanup_fclose_ FILE *f = NULL;
	92	_cleanup_free_ char *b = NULL;
b6b0cfaa EGP	93	_cleanup_free_ const char *fn = NULL;
b6b0cfaa EGP	94	const char *c = NULL;
9a00f57a LP	95	char line[LINE_MAX];
	96	size_t n;
	97	int r;
	98
	99	assert(field);
	100	assert(buffer);
	101	assert(ret);
	102
b6b0cfaa	103	r = from_home_dir("XDG_CONFIG_HOME", ".config", &b, &c);
9a00f57a LP	104	if (r < 0)
	105	return r;
	106
b6b0cfaa EGP	107	fn = strappend(c, "/user-dirs.dirs");
	108	if (!fn)
	109	return -ENOMEM;
	110
9a00f57a LP	111	f = fopen(fn, "re");
	112	if (!f) {
	113	if (errno == ENOENT)
	114	goto fallback;
	115
	116	return -errno;
	117	}
	118
	119	/* This is an awful parse, but it follows closely what
	120	* xdg-user-dirs does upstream */
	121
	122	n = strlen(field);
	123	FOREACH_LINE(line, f, return -errno) {
	124	char l, p, *e;
	125
	126	l = strstrip(line);
	127
	128	if (!strneq(l, field, n))
	129	continue;
	130
	131	p = l + n;
	132	p += strspn(p, WHITESPACE);
	133
	134	if (*p != '=')
	135	continue;
	136	p++;
	137
	138	p += strspn(p, WHITESPACE);
	139
	140	if (*p != '"')
	141	continue;
	142	p++;
	143
	144	e = strrchr(p, '"');
	145	if (!e)
	146	continue;
	147	*e = 0;
	148
	149	/* Three syntaxes permitted: relative to $HOME, $HOME itself, and absolute path */
	150	if (startswith(p, "$HOME/")) {
	151	_cleanup_free_ char *h = NULL;
	152	char *cc;
	153
	154	r = get_home_dir(&h);
	155	if (r < 0)
	156	return r;
	157
	158	cc = strappend(h, p+5);
	159	if (!cc)
	160	return -ENOMEM;
	161
	162	*buffer = cc;
	163	*ret = cc;
	164	return 0;
	165	} else if (streq(p, "$HOME")) {
	166
	167	r = get_home_dir(buffer);
	168	if (r < 0)
	169	return r;
	170
	171	ret = buffer;
	172	return 0;
	173	} else if (path_is_absolute(p)) {
	174	char *copy;
175
176	copy = strdup(p);
177	if (!copy)
178	return -ENOMEM;
179
180	*buffer = copy;
181	*ret = copy;
182	return 0;
183	}
184	}
185
186	fallback:
187	/* The desktop directory defaults to $HOME/Desktop, the others to $HOME */
188	if (streq(field, "XDG_DESKTOP_DIR")) {
189	_cleanup_free_ char *h = NULL;
190	char *cc;
191
192	r = get_home_dir(&h);
193	if (r < 0)
194	return r;
195
196	cc = strappend(h, "/Desktop");
197	if (!cc)
198	return -ENOMEM;
199
200	*buffer = cc;
201	*ret = cc;
202	} else {
203
204	r = get_home_dir(buffer);
205	if (r < 0)
206	return r;
207
208	ret = buffer;
209	}
210
211	return 0;
212	}
213
214	static int get_path(uint64_t type, char buffer, const char ret) {
215	int r;
216
217	assert(buffer);
218	assert(ret);
219
220	switch (type) {
221
222	case SD_PATH_TEMPORARY:
fccb4486	223	return tmp_dir(ret);
9a00f57a LP	224
9a00f57a LP	225	case SD_PATH_TEMPORARY_LARGE:
fccb4486	226	return var_tmp_dir(ret);
9a00f57a LP	227
	228	case SD_PATH_SYSTEM_BINARIES:
	229	*ret = "/usr/bin";
	230	return 0;
	231
	232	case SD_PATH_SYSTEM_INCLUDE:
	233	*ret = "/usr/include";
	234	return 0;
	235
	236	case SD_PATH_SYSTEM_LIBRARY_PRIVATE:
	237	*ret = "/usr/lib";
	238	return 0;
	239
	240	case SD_PATH_SYSTEM_LIBRARY_ARCH:
	241	*ret = LIBDIR;
	242	return 0;
	243
	244	case SD_PATH_SYSTEM_SHARED:
	245	*ret = "/usr/share";
	246	return 0;
	247
	248	case SD_PATH_SYSTEM_CONFIGURATION_FACTORY:
	249	*ret = "/usr/share/factory/etc";
	250	return 0;
	251
	252	case SD_PATH_SYSTEM_STATE_FACTORY:
	253	*ret = "/usr/share/factory/var";
	254	return 0;
	255
	256	case SD_PATH_SYSTEM_CONFIGURATION:
	257	*ret = "/etc";
	258	return 0;
	259
	260	case SD_PATH_SYSTEM_RUNTIME:
	261	*ret = "/run";
	262	return 0;
	263
	264	case SD_PATH_SYSTEM_RUNTIME_LOGS:
	265	*ret = "/run/log";
	266	return 0;
	267
	268	case SD_PATH_SYSTEM_STATE_PRIVATE:
	269	*ret = "/var/lib";
	270	return 0;
	271
	272	case SD_PATH_SYSTEM_STATE_LOGS:
	273	*ret = "/var/log";
	274	return 0;
	275
	276	case SD_PATH_SYSTEM_STATE_CACHE:
	277	*ret = "/var/cache";
	278	return 0;
	279
	280	case SD_PATH_SYSTEM_STATE_SPOOL:
	281	*ret = "/var/spool";
	282	return 0;
	283
	284	case SD_PATH_USER_BINARIES:
	285	return from_home_dir(NULL, ".local/bin", buffer, ret);
	286
	287	case SD_PATH_USER_LIBRARY_PRIVATE:
	288	return from_home_dir(NULL, ".local/lib", buffer, ret);
	289
	290	case SD_PATH_USER_LIBRARY_ARCH:
613e3a26	291	return from_home_dir(NULL, ".local/lib/" LIB_ARCH_TUPLE, buffer, ret);
9a00f57a LP	292
	293	case SD_PATH_USER_SHARED:
	294	return from_home_dir("XDG_DATA_HOME", ".local/share", buffer, ret);
	295
	296	case SD_PATH_USER_CONFIGURATION:
	297	return from_home_dir("XDG_CONFIG_HOME", ".config", buffer, ret);
	298
	299	case SD_PATH_USER_RUNTIME:
	300	return from_environment("XDG_RUNTIME_DIR", NULL, ret);
	301
	302	case SD_PATH_USER_STATE_CACHE:
	303	return from_home_dir("XDG_CACHE_HOME", ".cache", buffer, ret);
	304
	305	case SD_PATH_USER:
	306	r = get_home_dir(buffer);
	307	if (r < 0)
	308	return r;
	309
	310	ret = buffer;
	311	return 0;
	312
	313	case SD_PATH_USER_DOCUMENTS:
	314	return from_user_dir("XDG_DOCUMENTS_DIR", buffer, ret);
	315
	316	case SD_PATH_USER_MUSIC:
	317	return from_user_dir("XDG_MUSIC_DIR", buffer, ret);
	318
	319	case SD_PATH_USER_PICTURES:
	320	return from_user_dir("XDG_PICTURES_DIR", buffer, ret);
	321
	322	case SD_PATH_USER_VIDEOS:
	323	return from_user_dir("XDG_VIDEOS_DIR", buffer, ret);
	324
	325	case SD_PATH_USER_DOWNLOAD:
	326	return from_user_dir("XDG_DOWNLOAD_DIR", buffer, ret);
	327
	328	case SD_PATH_USER_PUBLIC:
	329	return from_user_dir("XDG_PUBLICSHARE_DIR", buffer, ret);
	330
	331	case SD_PATH_USER_TEMPLATES:
	332	return from_user_dir("XDG_TEMPLATES_DIR", buffer, ret);
	333
	334	case SD_PATH_USER_DESKTOP:
	335	return from_user_dir("XDG_DESKTOP_DIR", buffer, ret);
	336	}
	337
15411c0c	338	return -EOPNOTSUPP;
9a00f57a LP	339	}
9a00f57a LP	340
2de30868	341	_public_ int sd_path_home(uint64_t type, const char suffix, char *path) {
9a00f57a LP	342	char buffer = NULL, cc;
	343	const char *ret;
	344	int r;
	345
	346	assert_return(path, -EINVAL);
	347
	348	if (IN_SET(type,
	349	SD_PATH_SEARCH_BINARIES,
	350	SD_PATH_SEARCH_LIBRARY_PRIVATE,
	351	SD_PATH_SEARCH_LIBRARY_ARCH,
	352	SD_PATH_SEARCH_SHARED,
	353	SD_PATH_SEARCH_CONFIGURATION_FACTORY,
	354	SD_PATH_SEARCH_STATE_FACTORY,
	355	SD_PATH_SEARCH_CONFIGURATION)) {
	356
	357	_cleanup_strv_free_ char **l = NULL;
	358
	359	r = sd_path_search(type, suffix, &l);
	360	if (r < 0)
	361	return r;
	362
	363	buffer = strv_join(l, ":");
	364	if (!buffer)
	365	return -ENOMEM;
	366
	367	*path = buffer;
	368	return 0;
	369	}
	370
	371	r = get_path(type, &buffer, &ret);
	372	if (r < 0)
	373	return r;
	374
	375	if (!suffix) {
	376	if (!buffer) {
	377	buffer = strdup(ret);
	378	if (!buffer)
	379	return -ENOMEM;
	380	}
	381
	382	*path = buffer;
	383	return 0;
	384	}
	385
	386	suffix += strspn(suffix, "/");
	387
	388	if (endswith(ret, "/"))
	389	cc = strappend(ret, suffix);
	390	else
605405c6	391	cc = strjoin(ret, "/", suffix);
9a00f57a LP	392
	393	free(buffer);
	394
	395	if (!cc)
	396	return -ENOMEM;
	397
	398	*path = cc;
	399	return 0;
	400	}
	401
	402	static int search_from_environment(
	403	char ***list,
	404	const char *env_home,
	405	const char *home_suffix,
	406	const char *env_search,
	407	bool env_search_sufficient,
	408	const char *first, ...) {
	409
	410	const char *e;
	411	char *h = NULL;
	412	char **l = NULL;
	413	int r;
	414
	415	assert(list);
	416
	417	if (env_search) {
	418	e = secure_getenv(env_search);
	419	if (e) {
	420	l = strv_split(e, ":");
	421	if (!l)
	422	return -ENOMEM;
	423
	424	if (env_search_sufficient) {
	425	*list = l;
	426	return 0;
	427	}
	428	}
	429	}
	430
	431	if (!l && first) {
	432	va_list ap;
	433
	434	va_start(ap, first);
	435	l = strv_new_ap(first, ap);
	436	va_end(ap);
	437
	438	if (!l)
	439	return -ENOMEM;
	440	}
	441
	442	if (env_home) {
	443	e = secure_getenv(env_home);
	444	if (e && path_is_absolute(e)) {
	445	h = strdup(e);
	446	if (!h) {
	447	strv_free(l);
	448	return -ENOMEM;
	449	}
	450	}
	451	}
	452
	453	if (!h && home_suffix) {
	454	e = secure_getenv("HOME");
	455	if (e && path_is_absolute(e)) {
456	if (endswith(e, "/"))
457	h = strappend(e, home_suffix);
458	else
605405c6	459	h = strjoin(e, "/", home_suffix);
9a00f57a LP	460
	461	if (!h) {
	462	strv_free(l);
	463	return -ENOMEM;
	464	}
	465	}
	466	}
	467
	468	if (h) {
	469	r = strv_consume_prepend(&l, h);
	470	if (r < 0) {
	471	strv_free(l);
	472	return -ENOMEM;
	473	}
	474	}
	475
	476	*list = l;
	477	return 0;
	478	}
	479
	480	static int get_search(uint64_t type, char ***list) {
	481
	482	assert(list);
	483
	484	switch(type) {
	485
	486	case SD_PATH_SEARCH_BINARIES:
	487	return search_from_environment(list,
	488	NULL,
	489	".local/bin",
	490	"PATH",
	491	true,
	492	"/usr/local/sbin",
	493	"/usr/local/bin",
	494	"/usr/sbin",
	495	"/usr/bin",
349cc4a5	496	#if HAVE_SPLIT_USR
9a00f57a LP	497	"/sbin",
	498	"/bin",
	499	#endif
	500	NULL);
	501
	502	case SD_PATH_SEARCH_LIBRARY_PRIVATE:
	503	return search_from_environment(list,
	504	NULL,
	505	".local/lib",
	506	NULL,
	507	false,
	508	"/usr/local/lib",
	509	"/usr/lib",
349cc4a5	510	#if HAVE_SPLIT_USR
9a00f57a LP	511	"/lib",
	512	#endif
	513	NULL);
	514
	515	case SD_PATH_SEARCH_LIBRARY_ARCH:
	516	return search_from_environment(list,
	517	NULL,
613e3a26	518	".local/lib/" LIB_ARCH_TUPLE,
9a00f57a LP	519	"LD_LIBRARY_PATH",
	520	true,
	521	LIBDIR,
349cc4a5	522	#if HAVE_SPLIT_USR
9a00f57a LP	523	ROOTLIBDIR,
	524	#endif
	525	NULL);
	526
	527	case SD_PATH_SEARCH_SHARED:
	528	return search_from_environment(list,
	529	"XDG_DATA_HOME",
	530	".local/share",
	531	"XDG_DATA_DIRS",
	532	false,
	533	"/usr/local/share",
	534	"/usr/share",
	535	NULL);
	536
	537	case SD_PATH_SEARCH_CONFIGURATION_FACTORY:
	538	return search_from_environment(list,
	539	NULL,
	540	NULL,
	541	NULL,
	542	false,
	543	"/usr/local/share/factory/etc",
	544	"/usr/share/factory/etc",
	545	NULL);
	546
	547	case SD_PATH_SEARCH_STATE_FACTORY:
	548	return search_from_environment(list,
	549	NULL,
	550	NULL,
	551	NULL,
	552	false,
	553	"/usr/local/share/factory/var",
	554	"/usr/share/factory/var",
	555	NULL);
	556
	557	case SD_PATH_SEARCH_CONFIGURATION:
	558	return search_from_environment(list,
	559	"XDG_CONFIG_HOME",
	560	".config",
	561	"XDG_CONFIG_DIRS",
	562	false,
	563	"/etc",
	564	NULL);
	565	}
	566
15411c0c	567	return -EOPNOTSUPP;
9a00f57a LP	568	}
9a00f57a LP	569
2de30868	570	_public_ int sd_path_search(uint64_t type, const char suffix, char **paths) {
9a00f57a LP	571	char l, i, j, n;
	572	int r;
	573
	574	assert_return(paths, -EINVAL);
	575
	576	if (!IN_SET(type,
	577	SD_PATH_SEARCH_BINARIES,
	578	SD_PATH_SEARCH_LIBRARY_PRIVATE,
	579	SD_PATH_SEARCH_LIBRARY_ARCH,
	580	SD_PATH_SEARCH_SHARED,
	581	SD_PATH_SEARCH_CONFIGURATION_FACTORY,
	582	SD_PATH_SEARCH_STATE_FACTORY,
	583	SD_PATH_SEARCH_CONFIGURATION)) {
	584
	585	char *p;
	586
	587	r = sd_path_home(type, suffix, &p);
	588	if (r < 0)
	589	return r;
	590
	591	l = new(char*, 2);
	592	if (!l) {
	593	free(p);
	594	return -ENOMEM;
	595	}
	596
	597	l[0] = p;
	598	l[1] = NULL;
	599
	600	*paths = l;
	601	return 0;
	602	}
	603
	604	r = get_search(type, &l);
	605	if (r < 0)
	606	return r;
	607
	608	if (!suffix) {
	609	*paths = l;
	610	return 0;
	611	}
	612
	613	n = new(char*, strv_length(l)+1);
	614	if (!n) {
	615	strv_free(l);
	616	return -ENOMEM;
	617	}
	618
	619	j = n;
	620	STRV_FOREACH(i, l) {
	621
	622	if (endswith(*i, "/"))
	623	j = strappend(i, suffix);
	624	else
605405c6	625	j = strjoin(i, "/", suffix);
9a00f57a LP	626
	627	if (!*j) {
	628	strv_free(l);
	629	strv_free(n);
	630	return -ENOMEM;
	631	}
	632
	633	j++;
	634	}
	635
	636	*j = NULL;
	637	*paths = n;
	638	return 0;
	639	}