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dbus

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IoI_xD 2026-04-15 16:12:38 -07:00
commit 54fed150e8
8 changed files with 223 additions and 143 deletions
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119
src/lowlevel.c
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@ -61,3 +61,122 @@ void MwLLCreateCommon(MwLL handle) {
void MwLLDestroyCommon(MwLL handle) {
free(handle->common.handler);
}
#ifdef USE_DBUS
MwBool MwLLDBusFuncSetup(MwLLDBusFuncTable* tbl) {
tbl->lib = MwDynamicOpen("libdbus-1.so");
if(!tbl->lib) {
fprintf(stderr, "[WARNING] dbus library (libdbus-1.so) not found, will not be able to check for any XDG settings.\n");
return MwFALSE;
}
#define DBUS_FUNC(x) \
tbl->x = MwDynamicSymbol(tbl->lib, #x); \
if(!tbl->x) { \
fprintf(stderr, "[WARNING] dbus function %s not found, will not be able to check for any XDG settings.\n", #x); \
dlclose(tbl->lib); \
return MwFALSE; \
}
DBUS_FUNC(dbus_error_init);
DBUS_FUNC(dbus_bus_get);
DBUS_FUNC(dbus_error_is_set);
DBUS_FUNC(dbus_error_free);
DBUS_FUNC(dbus_message_new_method_call);
DBUS_FUNC(dbus_message_iter_init_append);
DBUS_FUNC(dbus_message_iter_append_basic);
DBUS_FUNC(dbus_connection_send_with_reply_and_block);
DBUS_FUNC(dbus_message_unref);
DBUS_FUNC(dbus_message_iter_init);
DBUS_FUNC(dbus_message_iter_get_arg_type);
DBUS_FUNC(dbus_message_iter_recurse);
DBUS_FUNC(dbus_connection_unref);
DBUS_FUNC(dbus_message_iter_get_basic);
return MwTRUE;
}
#endif
MwBool MwLLDBusNewContext(MwLLDBusFuncTable* tbl, MwLLDBusContext* ctx) {
if(!tbl->lib) {
return MwFALSE;
}
tbl->dbus_error_init(&ctx->dbus_err);
ctx->dbus_conn = tbl->dbus_bus_get(DBUS_BUS_SESSION, &ctx->dbus_err);
if(tbl->dbus_error_is_set(&ctx->dbus_err)) {
fprintf(stderr, "[WARNING] Could not initialize dbus: Connection error: %s\n", ctx->dbus_err.message);
tbl->dbus_error_free(&ctx->dbus_err);
return MwFALSE;
}
if(!ctx->dbus_conn) {
fprintf(stderr, "[WARNING] Could not initialize dbus: Failed to connect to session bus\n");
return MwFALSE;
}
return MwTRUE;
};
MWDECL MwBool MwLLDBusPortalGet(MwLLDBusFuncTable* tbl, MwLLDBusContext* ctx, const char* portal, const char* namespace, const char* key, void* out) {
if(!ctx->dbus_conn) {
return MwFALSE;
}
ctx->dbus_msg = tbl->dbus_message_new_method_call(
"org.freedesktop.portal.Desktop",
"/org/freedesktop/portal/desktop",
portal,
"Read");
if(!ctx->dbus_msg) {
fprintf(stderr, "[WARNING] Couldn't get %s::%s: Failed to create message\n", namespace, key);
return MwFALSE;
}
tbl->dbus_message_iter_init_append(ctx->dbus_msg, &ctx->dbus_args);
tbl->dbus_message_iter_append_basic(&ctx->dbus_args, 's', &namespace);
tbl->dbus_message_iter_append_basic(&ctx->dbus_args, 's', &key);
ctx->dbus_reply = tbl->dbus_connection_send_with_reply_and_block(ctx->dbus_conn, ctx->dbus_msg, 100, &ctx->dbus_err);
if(tbl->dbus_error_is_set(&ctx->dbus_err)) {
fprintf(stderr, "[WARNING] Couldn't get %s::%s: Send error: %s\n", namespace, key, ctx->dbus_err.message);
tbl->dbus_error_free(&ctx->dbus_err);
return MwFALSE;
}
if(!ctx->dbus_reply) {
fprintf(stderr, "[WARNING] Couldn't get %s::%s: No reply received\n", namespace, key);
return MwFALSE;
}
if(!tbl->dbus_message_iter_init(ctx->dbus_reply, &ctx->dbus_args)) {
fprintf(stderr, "[WARNING] Couldn't get %s::%s: Reply has no arguments\n", namespace, key);
tbl->dbus_message_unref(ctx->dbus_reply);
return MwFALSE;
}
if(tbl->dbus_message_iter_get_arg_type(&ctx->dbus_args) != 'v') {
fprintf(stderr, "[WARNING] Couldn't get %s::%s: Expected outer variant\n", namespace, key);
tbl->dbus_message_unref(ctx->dbus_reply);
return MwFALSE;
}
tbl->dbus_message_iter_recurse(&ctx->dbus_args, &ctx->dbus_variant);
/* Some portals wrap the value in a second variant */
if(tbl->dbus_message_iter_get_arg_type(&ctx->dbus_variant) == 'v') {
tbl->dbus_message_iter_recurse(&ctx->dbus_variant, &ctx->dbus_inner_variant);
tbl->dbus_message_iter_get_basic(&ctx->dbus_inner_variant, out);
} else {
tbl->dbus_message_iter_get_basic(&ctx->dbus_variant, out);
}
tbl->dbus_message_unref(ctx->dbus_msg);
return MwTRUE;
}
void MwLLDBusFreeContext(MwLLDBusFuncTable* tbl, MwLLDBusContext* ctx) {
if(!tbl->lib) {
return;
}
if(ctx->dbus_reply) tbl->dbus_message_unref(ctx->dbus_reply);
if(ctx->dbus_conn) tbl->dbus_connection_unref(ctx->dbus_conn);
};