int drop_in_file(const char *dir, const char *unit, unsigned level,
const char *name, char **_p, char **_q) {
char prefix[DECIMAL_STR_MAX(unsigned)];
_cleanup_free_ char *b = NULL;
char *p, *q;
assert(unit);
assert(name);
assert(_p);
assert(_q);
sprintf(prefix, "%u", level);
b = xescape(name, "/.");
if (!b)
return -ENOMEM;
if (!filename_is_valid(b))
return -EINVAL;
p = strjoin(dir, "/", unit, ".d");
if (!p)
return -ENOMEM;
q = strjoin(p, "/", prefix, "-", b, ".conf");
if (!q) {
free(p);
return -ENOMEM;
}
*_p = p;
*_q = q;
return 0;
}
int pull_find_old_etags(
const char *url,
const char *image_root,
int dt,
const char *prefix,
const char *suffix,
char ***etags) {
_cleanup_free_ char *escaped_url = NULL;
_cleanup_closedir_ DIR *d = NULL;
_cleanup_strv_free_ char **l = NULL;
struct dirent *de;
int r;
assert(url);
assert(etags);
if (!image_root)
image_root = "/var/lib/machines";
escaped_url = xescape(url, FILENAME_ESCAPE);
if (!escaped_url)
return -ENOMEM;
d = opendir(image_root);
if (!d) {
if (errno == ENOENT) {
*etags = NULL;
return 0;
}
return -errno;
}
FOREACH_DIRENT_ALL(de, d, return -errno) {
const char *a, *b;
char *u;
if (de->d_type != DT_UNKNOWN &&
de->d_type != dt)
continue;
if (prefix) {
a = startswith(de->d_name, prefix);
if (!a)
continue;
} else
a = de->d_name;
a = startswith(a, escaped_url);
if (!a)
continue;
a = startswith(a, ".");
if (!a)
continue;
if (suffix) {
b = endswith(de->d_name, suffix);
if (!b)
continue;
} else
b = strchr(de->d_name, 0);
if (a >= b)
continue;
r = cunescape_length(a, b - a, 0, &u);
if (r < 0)
return r;
if (!http_etag_is_valid(u)) {
free(u);
continue;
}
r = strv_consume(&l, u);
if (r < 0)
return r;
}
*etags = l;
l = NULL;
return 0;
}
