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-rw-r--r--src/locale/localed.c76
1 files changed, 66 insertions, 10 deletions
diff --git a/src/locale/localed.c b/src/locale/localed.c
index 46405ca68a..3b22a582ac 100644
--- a/src/locale/localed.c
+++ b/src/locale/localed.c
@@ -24,6 +24,7 @@
#ifdef HAVE_XKBCOMMON
#include <xkbcommon/xkbcommon.h>
+#include <dlfcn.h>
#endif
#include "sd-bus.h"
@@ -1101,6 +1102,7 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
}
#ifdef HAVE_XKBCOMMON
+
_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;
@@ -1109,7 +1111,24 @@ static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char
log_internalv(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, fmt, args);
}
+#define LOAD_SYMBOL(symbol, dl, name) \
+ ({ \
+ (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
+ (symbol) ? 0 : -EOPNOTSUPP; \
+ })
+
static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
+
+ /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
+ * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
+ * pointers to the shared library are below: */
+
+ struct xkb_context* (*symbol_xkb_context_new)(enum xkb_context_flags flags) = NULL;
+ void (*symbol_xkb_context_unref)(struct xkb_context *context) = NULL;
+ void (*symbol_xkb_context_set_log_fn)(struct xkb_context *context, void (*log_fn)(struct xkb_context *context, enum xkb_log_level level, const char *format, va_list args)) = NULL;
+ struct xkb_keymap* (*symbol_xkb_keymap_new_from_names)(struct xkb_context *context, const struct xkb_rule_names *names, enum xkb_keymap_compile_flags flags) = NULL;
+ void (*symbol_xkb_keymap_unref)(struct xkb_keymap *keymap) = NULL;
+
const struct xkb_rule_names rmlvo = {
.model = model,
.layout = layout,
@@ -1118,35 +1137,68 @@ static int verify_xkb_rmlvo(const char *model, const char *layout, const char *v
};
struct xkb_context *ctx = NULL;
struct xkb_keymap *km = NULL;
+ void *dl;
int r;
- /* compile keymap from RMLVO information to check out its validity */
+ /* Compile keymap from RMLVO information to check out its validity */
+
+ dl = dlopen("libxkbcommon.so.0", RTLD_LAZY);
+ if (!dl)
+ return -EOPNOTSUPP;
+
+ r = LOAD_SYMBOL(symbol_xkb_context_new, dl, "xkb_context_new");
+ if (r < 0)
+ goto finish;
+
+ r = LOAD_SYMBOL(symbol_xkb_context_unref, dl, "xkb_context_unref");
+ if (r < 0)
+ goto finish;
+
+ r = LOAD_SYMBOL(symbol_xkb_context_set_log_fn, dl, "xkb_context_set_log_fn");
+ if (r < 0)
+ goto finish;
- ctx = xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
+ r = LOAD_SYMBOL(symbol_xkb_keymap_new_from_names, dl, "xkb_keymap_new_from_names");
+ if (r < 0)
+ goto finish;
+
+ r = LOAD_SYMBOL(symbol_xkb_keymap_unref, dl, "xkb_keymap_unref");
+ if (r < 0)
+ goto finish;
+
+ ctx = symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
if (!ctx) {
r = -ENOMEM;
- goto exit;
+ goto finish;
}
- xkb_context_set_log_fn(ctx, log_xkb);
+ symbol_xkb_context_set_log_fn(ctx, log_xkb);
- km = xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
+ km = symbol_xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!km) {
r = -EINVAL;
- goto exit;
+ goto finish;
}
r = 0;
-exit:
- xkb_keymap_unref(km);
- xkb_context_unref(ctx);
+finish:
+ if (symbol_xkb_keymap_unref && km)
+ symbol_xkb_keymap_unref(km);
+
+ if (symbol_xkb_context_unref && ctx)
+ symbol_xkb_context_unref(ctx);
+
+ (void) dlclose(dl);
return r;
}
+
#else
+
static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
return 0;
}
+
#endif
static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
@@ -1203,7 +1255,11 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
if (r < 0) {
log_error_errno(r, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
strempty(model), strempty(layout), strempty(variant), strempty(options));
- return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot compile XKB keymap, refusing");
+
+ if (r == -EOPNOTSUPP)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Local keyboard configuration not supported on this system.");
+
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Specified keymap cannot be compiled, refusing as invalid.");
}
if (free_and_strdup(&c->x11_layout, layout) < 0 ||