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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "dlfcn-util.h"
#include "log.h"
#include "macro.h"
#include "string-util.h"
#include "xkbcommon-util.h"
#if HAVE_XKBCOMMON
static void *xkbcommon_dl = NULL;
DLSYM_PROTOTYPE(xkb_context_new) = NULL;
DLSYM_PROTOTYPE(xkb_context_unref) = NULL;
DLSYM_PROTOTYPE(xkb_context_set_log_fn) = NULL;
DLSYM_PROTOTYPE(xkb_keymap_new_from_names) = NULL;
DLSYM_PROTOTYPE(xkb_keymap_unref) = NULL;
static int dlopen_xkbcommon(void) {
ELF_NOTE_DLOPEN("xkbcommon",
"Support for keyboard locale descriptions",
ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED, "libxkbcommon.so.0");
return dlopen_many_sym_or_warn(
&xkbcommon_dl, "libxkbcommon.so.0", LOG_DEBUG,
DLSYM_ARG(xkb_context_new),
DLSYM_ARG(xkb_context_unref),
DLSYM_ARG(xkb_context_set_log_fn),
DLSYM_ARG(xkb_keymap_new_from_names),
DLSYM_ARG(xkb_keymap_unref));
}
_printf_(3, 0)
static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {
const char *fmt;
fmt = strjoina("libxkbcommon: ", format);
DISABLE_WARNING_FORMAT_NONLITERAL;
log_internalv(LOG_DEBUG, 0, PROJECT_FILE, __LINE__, __func__, fmt, args);
REENABLE_WARNING;
}
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct xkb_context *, sym_xkb_context_unref, NULL);
DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct xkb_keymap *, sym_xkb_keymap_unref, NULL);
int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
_cleanup_(sym_xkb_context_unrefp) struct xkb_context *ctx = NULL;
_cleanup_(sym_xkb_keymap_unrefp) struct xkb_keymap *km = NULL;
const struct xkb_rule_names rmlvo = {
.model = model,
.layout = layout,
.variant = variant,
.options = options,
};
int r;
/* Compile keymap from RMLVO information to check out its validity */
r = dlopen_xkbcommon();
if (r < 0)
return r;
ctx = sym_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
if (!ctx)
return -ENOMEM;
sym_xkb_context_set_log_fn(ctx, log_xkb);
km = sym_xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!km)
return -EINVAL;
return 0;
}
#endif
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