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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "sd-path.h"
#include "conf-files.h"
#include "constants.h"
#include "env-file.h"
#include "escape.h"
#include "glyph-util.h"
#include "log.h"
#include "main-func.h"
#include "path-lookup.h"
#include "strv.h"
static int environment_dirs(char ***ret) {
_cleanup_strv_free_ char **dirs = NULL;
_cleanup_free_ char *c = NULL;
int r;
dirs = strv_new(CONF_PATHS("environment.d"));
if (!dirs)
return -ENOMEM;
/* ~/.config/systemd/environment.d */
r = sd_path_lookup(SD_PATH_USER_CONFIGURATION, "environment.d", &c);
if (r < 0)
return r;
r = strv_consume_prepend(&dirs, TAKE_PTR(c));
if (r < 0)
return r;
if (DEBUG_LOGGING) {
_cleanup_free_ char *t = NULL;
t = strv_join(dirs, "\n\t");
log_debug("Looking for environment.d files in (higher priority first):\n\t%s", strna(t));
}
*ret = TAKE_PTR(dirs);
return 0;
}
static int load_and_print(void) {
_cleanup_strv_free_ char **dirs = NULL, **files = NULL, **env = NULL;
int r;
r = environment_dirs(&dirs);
if (r < 0)
return r;
r = conf_files_list_strv(&files, ".conf", NULL, 0, (const char **) dirs);
if (r < 0)
return r;
/* This will mutate the existing environment, based on the presumption
* that in case of failure, a partial update is better than none. */
STRV_FOREACH(i, files) {
log_debug("Reading %s%s", *i, special_glyph(SPECIAL_GLYPH_ELLIPSIS));
r = merge_env_file(&env, NULL, *i);
if (r == -ENOMEM)
return r;
}
STRV_FOREACH(i, env) {
char *t;
_cleanup_free_ char *q = NULL;
t = strchr(*i, '=');
assert(t);
q = shell_maybe_quote(t + 1, 0);
if (!q)
return log_oom();
printf("%.*s=%s\n", (int) (t - *i), *i, q);
}
return 0;
}
static int run(int argc, char *argv[]) {
int r;
log_setup();
if (argc > 1)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes no arguments.");
r = load_and_print();
if (r < 0)
return log_error_errno(r, "Failed to load environment.d: %m");
return 0;
}
DEFINE_MAIN_FUNCTION(run);
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