Add basic transmit support (WIP)

9 files changed, 407 insertions, 76 deletions

diff --git a/RemoteControlManager.xml b/RemoteControlManager.xml
index c4cb500..8f80b19 100644
--- a/RemoteControlManager.xml
+++ b/RemoteControlManager.xml
@@ -23,6 +23,9 @@
       <arg type='aa{sv}' name='keymap_entries' direction='in'/>
       <arg type='aa{sv}' name='layout_entries' direction='in'/>
     </method>
+    <method name='Transmit'>
+      <arg type='au' name='data' direction='in'/>
+    </method>
     <signal name='KeyPressed'>
       <arg type='s' name='protocol'/>
       <arg type='t' name='scancode'/>
diff --git a/rcm-client-hardware-list.c b/rcm-client-hardware-list.c
index 662dbf3..2c47ee5 100644
--- a/rcm-client-hardware-list.c
+++ b/rcm-client-hardware-list.c
@@ -6,6 +6,7 @@
 #include <gtk/gtk.h>
 
 #include "generated.h"
+#include "shared.h"
 #include "rcm-client-main.h"
 #include "rcm-client-hardware-list.h"
 #include "rcm-client-receive.h"
@@ -84,12 +85,84 @@ hardware_properties_cb(GtkButton *button, gpointer user_data)
 	gtk_widget_hide(dialog);
 }
 
+static GVariant *
+encode_nec(uint32_t scancode_raw)
+{
+	GVariantBuilder *builder;
+	GVariant *r;
+	unsigned i;
+	uint32_t scancode;
+
+	scancode = ((((scancode_raw >> 24) & 0xff) <<  0) |
+		    (((scancode_raw >> 16) & 0xff) <<  8) |
+		    (((scancode_raw >>  8) & 0xff) << 16) |
+		    (((scancode_raw >>  0) & 0xff) << 24));
+
+	builder = g_variant_builder_new(G_VARIANT_TYPE_ARRAY);
+	g_variant_builder_add(builder, "u", 9000);
+	g_variant_builder_add(builder, "u", 4500);
+
+	for (i = 0; i < 32; i++) {
+		g_variant_builder_add(builder, "u", 560);
+		if (scancode & 0x1)
+			g_variant_builder_add(builder, "u", 3 * 560);
+		else
+			g_variant_builder_add(builder, "u", 1 * 560);
+		scancode >>= 1;
+	}
+
+	g_variant_builder_add(builder, "u", 560);
+
+	r = g_variant_builder_end(builder);
+	g_variant_builder_unref(builder);
+	return r;
+}
+
+static void
+advanced_transmit_cb(GtkButton *button, gpointer user_data)
+{
+	RCDevice *object = user_data;
+	GtkComboBoxText *protocolw;
+	GtkEntry *scancodew;
+	gchar *protocol;
+	const gchar *scancode;
+	uint64_t sc;
+	GError *error = NULL;
+	gboolean r;
+
+	protocolw = GTK_COMBO_BOX_TEXT(gtk_builder_get_object(global->builder, "advanced_main_transmit_protocol"));
+	scancodew = GTK_ENTRY(gtk_builder_get_object(global->builder, "advanced_main_transmit_scancode"));
+
+	protocol = gtk_combo_box_text_get_active_text(protocolw);
+	scancode = gtk_entry_get_text(scancodew);
+	printf("Asked to transmit: protocol %s scancode %s\n", protocol, scancode);
+	g_free(protocol);
+
+	if (!strcmp(protocol, "NEC")) {
+		printf("Invalid protocol: %s\n", protocol);
+		return;
+	}
+
+	r = strtoull_strict(scancode, &sc);
+	if (r < 0 || sc > UINT32_MAX) {
+		printf("Invalid scancode: %s\n", scancode);
+		return;
+	}
+
+	if (!rcdevice_call_transmit_sync(object, encode_nec(sc), NULL, &error)) {
+		printf("rcdevice_call_transmit_sync failed: %s\n",
+		       error ? error->message : "no error reported");
+		g_error_free(error);
+	}
+}
+
 static void
 advanced_cb(GtkButton *button, gpointer user_data)
 {
 	RCDevice *object = user_data;
 	GtkWidget *dialog;
 	GtkWidget *title;
+	GtkWidget *transmit;
 	gchar *titlestr;
 
 	dialog = GTK_WIDGET(gtk_builder_get_object(global->builder, "advanced"));
@@ -100,6 +173,9 @@ advanced_cb(GtkButton *button, gpointer user_data)
 	gtk_label_set_markup(GTK_LABEL(title), titlestr);
 	g_free(titlestr);
 
+	transmit = GTK_WIDGET(gtk_builder_get_object(global->builder, "advanced_main_transmit_button"));
+	g_signal_connect(transmit, "clicked", G_CALLBACK(advanced_transmit_cb), object);
+
 	g_signal_connect_swapped(dialog, "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), dialog);
 	gtk_widget_show(dialog);
 }
diff --git a/rcm-client.ui b/rcm-client.ui
index ba5c893..8384abd 100644
--- a/rcm-client.ui
+++ b/rcm-client.ui
@@ -61,10 +61,10 @@
             <child>
               <object class="GtkButton" id="advanced_main_transmit_button">
                 <property name="visible">True</property>
-                <property name="sensitive">False</property>
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
                 <property name="halign">end</property>
+                <property name="valign">start</property>
                 <property name="image">advanced_button_transmit_image</property>
               </object>
               <packing>
@@ -98,11 +98,80 @@
               </packing>
             </child>
             <child>
-              <object class="GtkLabel" id="advanced_main_transmit_label">
+              <object class="GtkGrid" id="advanced_main_transmit_grid">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="label" translatable="yes">Transmit raw commands</property>
-                <property name="xalign">0</property>
+                <property name="row_spacing">6</property>
+                <property name="column_spacing">12</property>
+                <child>
+                  <object class="GtkLabel" id="advanced_main_transmit_label">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="label" translatable="yes">&lt;b&gt;Transmit raw command&lt;/b&gt;</property>
+                    <property name="use_markup">True</property>
+                    <property name="xalign">0</property>
+                  </object>
+                  <packing>
+                    <property name="left_attach">0</property>
+                    <property name="top_attach">0</property>
+                    <property name="width">2</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="advanced_main_transmit_protocol_label">
+                    <property name="visible">True</property>
+                    <property name="sensitive">False</property>
+                    <property name="can_focus">False</property>
+                    <property name="margin_left">6</property>
+                    <property name="label" translatable="yes">Protocol</property>
+                    <property name="xalign">1</property>
+                  </object>
+                  <packing>
+                    <property name="left_attach">0</property>
+                    <property name="top_attach">1</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="advanced_main_transmit_scancode_label">
+                    <property name="visible">True</property>
+                    <property name="sensitive">False</property>
+                    <property name="can_focus">False</property>
+                    <property name="margin_left">6</property>
+                    <property name="label" translatable="yes">Scancode</property>
+                    <property name="xalign">1</property>
+                  </object>
+                  <packing>
+                    <property name="left_attach">0</property>
+                    <property name="top_attach">2</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkComboBoxText" id="advanced_main_transmit_protocol">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="active">0</property>
+                    <items>
+                      <item translatable="yes">NEC</item>
+                    </items>
+                  </object>
+                  <packing>
+                    <property name="left_attach">1</property>
+                    <property name="top_attach">1</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkEntry" id="advanced_main_transmit_scancode">
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="max_length">10</property>
+                    <property name="text" translatable="yes">0x01FE0FF0</property>
+                    <property name="input_hints">GTK_INPUT_HINT_UPPERCASE_CHARS | GTK_INPUT_HINT_NONE</property>
+                  </object>
+                  <packing>
+                    <property name="left_attach">1</property>
+                    <property name="top_attach">2</property>
+                  </packing>
+                </child>
               </object>
               <packing>
                 <property name="left_attach">1</property>
diff --git a/rcm-server-evdev.c b/rcm-server-evdev.c
index 1c04864..ab5ac0e 100644
--- a/rcm-server-evdev.c
+++ b/rcm-server-evdev.c
@@ -173,10 +173,10 @@ evdev_read(sd_event_source *s, int fd, uint32_t revents, void *userdata)
 		if (r != LIBEVDEV_READ_STATUS_SUCCESS)
 			continue;
 
-		printf("Event: %s %s %d\n",
+		printf("Event: %s %s %u (0x%08x)\n",
 		       libevdev_event_type_get_name(ev.type),
 		       libevdev_event_code_get_name(ev.type, ev.code),
-		       ev.value);
+		       ev.value, ev.value);
 
 		switch (ev.type) {
 		case EV_KEY:
diff --git a/rcm-server-keymap.c b/rcm-server-keymap.c
index 15b7fe8..56e17f6 100644
--- a/rcm-server-keymap.c
+++ b/rcm-server-keymap.c
@@ -11,7 +11,6 @@
 #include <unistd.h>
 #include <ctype.h>
 #include <errno.h>
-#include <limits.h>
 
 #include "utils.h"
 #include "shared.h"
@@ -37,60 +36,6 @@ struct inis iniss[] = {
 	{ .name = NULL, .value = INI_SECTION_UNDEFINED },
 };
 
-static int strtol_strict(const char *str, int *result)
-{
-	char *end;
-	long val;
-
-	errno = 0;
-	val = strtol(str, &end, 10);
-
-	if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
-		return -EINVAL;
-
-	if (errno != 0 && val == 0)
-		return -EINVAL;
-
-	if (end == str)
-		return -EINVAL;
-
-	if (*end != '\0')
-		return -EINVAL;
-
-	if (val < 1 || val > UINT16_MAX)
-		return -EINVAL;
-
-	*result = val;
-	return 0;
-}
-
-static int strtoull_strict(const char *str, uint64_t *result)
-{
-	char *end;
-	unsigned long long val;
-
-	errno = 0;
-	val = strtoull(str, &end, 16);
-
-	if (errno == ERANGE && (val == ULLONG_MAX || val == 0))
-		return -EINVAL;
-
-	if (errno != 0 && val == 0)
-		return -EINVAL;
-
-	if (end == str)
-		return -EINVAL;
-
-	if (*end != '\0')
-		return -EINVAL;
-
-	if (val > UINT64_MAX)
-		return -EINVAL;
-
-	*result = val;
-	return 0;
-}
-
 static int
 keymap_parse(FILE *fp, char **line, size_t *buf_size, struct keymap *keymap,
 	     uint16_t *rows_return, uint16_t *cols_return,
diff --git a/rcm-server-main.c b/rcm-server-main.c
index 4a0adbc..4d23f89 100644
--- a/rcm-server-main.c
+++ b/rcm-server-main.c
@@ -649,6 +649,58 @@ out:
 	return sd_bus_error_set_errno(error, r);
 }
 
+static void
+lirc_write(int fd, const uint32_t *v, unsigned count)
+{
+	unsigned nv[count];
+	unsigned i;
+	size_t l = count * sizeof(uint32_t);
+
+	for (i = 0; i < count; i++)
+		nv[i] = v[i];
+
+	printf("Write to lirc fd of %zu bytes returned %zi errno is %i aka %s\n",
+	       l, write(fd, nv, l), errno, strerror(errno));
+}
+
+static int
+method_transmit(sd_bus_message *m, void *userdata, sd_bus_error *error)
+{
+	_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+	struct manager *mgr = userdata;
+	struct device *dev;
+	const void *v;
+	size_t l;
+	int r;
+	const uint32_t *values;
+	size_t count;
+
+	printf("Transmit method called\n");
+	dev = find_device_by_path(mgr, sd_bus_message_get_path(m));
+	if (!dev) {
+		sd_bus_error_set_const(error, "org.gnome.RemoteControlManager.InvalidDevice", "Sorry, invalid device");
+		return -EINVAL;
+	}
+
+	r = sd_bus_message_read_array(m, SD_BUS_TYPE_UINT32, &v, &l);
+	if (r < 0) {
+		goto out;
+	} else if (r == 0 || l % sizeof(uint32_t) != 0) {
+		r = -EBADMSG;
+		goto out;
+	}
+
+	values = v;
+	count = l / sizeof(uint32_t);
+	lirc_write(dev->lirc_fd, values, count);
+
+
+	return sd_bus_reply_method_return(m, NULL);
+
+out:
+	return sd_bus_error_set_errno(error, r);
+}
+
 static const sd_bus_vtable device_vtable[] = {
 	SD_BUS_VTABLE_START(0),
 	SD_BUS_PROPERTY("SysName", "s", property_get, 0, 0),
@@ -660,6 +712,7 @@ static const sd_bus_vtable device_vtable[] = {
 	SD_BUS_METHOD("ListKeymaps", NULL, "as", method_listkeymaps, SD_BUS_VTABLE_UNPRIVILEGED),
 	SD_BUS_METHOD("GetKeymap", "s", "ssqqaa{sv}aa{sv}", method_getkeymap, SD_BUS_VTABLE_UNPRIVILEGED),
 	SD_BUS_METHOD("SetKeymap", "sssqqaa{sv}aa{sv}", NULL, method_setkeymap, SD_BUS_VTABLE_UNPRIVILEGED),
+	SD_BUS_METHOD("Transmit", "au", NULL, method_transmit, SD_BUS_VTABLE_UNPRIVILEGED),
 	SD_BUS_SIGNAL("KeyPressed", "sts", 0),
 	SD_BUS_SIGNAL("KeyReleased", "s", 0),
 	SD_BUS_VTABLE_END
@@ -684,6 +737,63 @@ remove_device(struct manager *mgr, struct udev_device *udev)
 	}
 }
 
+static int
+lirc_read(sd_event_source *s, int fd, uint32_t revents, void *userdata)
+{
+	struct device *device = userdata;
+	uint8_t buf[100];
+	ssize_t bytes_read;
+
+	if (fd != device->lirc_fd)
+		fprintf(stderr, "lirc fd mismatch: %i != %i\n", device->lirc_fd, fd);
+
+	if (revents & EPOLLHUP) {
+		fprintf(stderr, "lirc connection closed!\n");
+		close(fd);
+		device->lirc_fd = -1;
+		return 0;
+	}
+
+	if (!(revents & EPOLLIN)) {
+		fprintf(stderr, "unexpected lirc event: %" PRIu32 "\n", revents);
+		return 0;
+	}
+
+	while ((bytes_read = read(fd, buf, sizeof(buf))) > 0)
+		printf("Read %zi bytes from lirc dev\n", bytes_read);
+
+	return 0;
+}
+
+static int
+lirc_setup(struct device *device, const char *path)
+{
+	if (!device)
+		return -EINVAL;
+
+	if (device->lirc_fd >= 0) {
+		printf("Multiple lirc devices!?\n");
+		return 0;
+	}
+
+	device->lirc_fd = open(path, O_RDWR | O_NONBLOCK);
+	if (device->lirc_fd < 0) {
+		printf("Failed to open lirc device %s: %s\n", path, strerror(errno));
+		return -errno;
+	}
+
+	if (sd_event_add_io(device->mgr->event, &device->lirc_ev,
+			    device->lirc_fd, EPOLLIN, lirc_read, device) < 0) {
+		printf("Failed to add event source for lirc device %s: %s\n",
+		       path, strerror(errno));
+		close(device->lirc_fd);
+		device->lirc_fd = -1;
+		return -errno;
+	}
+
+	return 0;
+}
+
 static void
 add_device(struct manager *mgr, struct udev_device *udev)
 {
@@ -693,7 +803,6 @@ add_device(struct manager *mgr, struct udev_device *udev)
 	struct device *device;
 	struct udev_enumerate *enumerate;
 	struct udev_list_entry *devices, *dev_list_entry;
-	struct udev_device *evdev;
 	int r;
 
 	name = udev_device_get_sysname(udev);
@@ -714,7 +823,9 @@ add_device(struct manager *mgr, struct udev_device *udev)
 	device->path = path;
 	device->name = device->path + strlen("/org/gnome/RemoteControlManager/");
 	device->evdev_fd = -1;
+	device->lirc_fd = -1;
 	device->error = NULL;
+	device->input_name = NULL;
 
 	if (keymaps_load(device) < 0) {
 		fprintf(stderr, "failed to load keymaps: %m\n");
@@ -726,12 +837,15 @@ add_device(struct manager *mgr, struct udev_device *udev)
 	enumerate = udev_enumerate_new(mgr->udev);
 	udev_enumerate_add_match_parent(enumerate, udev);
 	udev_enumerate_add_match_sysname(enumerate, "event*");
+	udev_enumerate_add_match_sysname(enumerate, "lirc*");
 	udev_enumerate_scan_devices(enumerate);
 	devices = udev_enumerate_get_list_entry(enumerate);
 
 	udev_list_entry_foreach(dev_list_entry, devices) {
 		const char *path;
+		struct udev_device *udev_dev;
 		const char *devnode;
+		const char *subsys;
 
 		path = udev_list_entry_get_name(dev_list_entry);
 		if (!path) {
@@ -739,29 +853,47 @@ add_device(struct manager *mgr, struct udev_device *udev)
 			continue;
 		}
 
-		evdev = udev_device_new_from_syspath(mgr->udev, path);
-		if (!evdev) {
+		udev_dev = udev_device_new_from_syspath(mgr->udev, path);
+		if (!udev_dev) {
 			printf("Failed to create udev device\n");
 			continue;
 		}
 
-		devnode = udev_device_get_devnode(evdev);
+		devnode = udev_device_get_devnode(udev_dev);
 		if (!devnode) {
-			printf("Failed to determine evdev devnode\n");
-			udev_device_unref(evdev);
-			continue;
+			printf("Failed to determine udev_dev devnode\n");
+			goto next;
 		}
 
-		r = evdev_setup(device, devnode);
-		if (r < 0) {
-			printf("Failed to setup evdev: %s\n", devnode);
-			device->error = "Error: Failed to setup evdev";
-			device->input_name = NULL;
-			udev_device_unref(evdev);
-			continue;
+		subsys = udev_device_get_subsystem(udev_dev);
+		if (!subsys) {
+			printf("Failed to determine udev_dev subsystem\n");
+			goto next;
+		}
+
+		if (!strcmp(subsys, "input")) {
+			r = evdev_setup(device, devnode);
+			if (r < 0) {
+				printf("Failed to setup evdev: %s\n", devnode);
+				device->error = "Error: Failed to setup evdev";
+				goto next;
+			}
+
+		} else if (!strcmp(subsys, "lirc")) {
+			r = lirc_setup(device, devnode);
+			if (r < 0) {
+				printf("Failed to setup lirc: %s\n", devnode);
+				device->error = "Error: Failed to setup lirc";
+				goto next;
+			}
+
+		} else {
+			printf("Unknown subsystem, ignored %s\n", devnode);
+			goto next;
 		}
 
-		udev_device_unref(evdev);
+next:
+		udev_device_unref(udev_dev);
 	}
 	udev_enumerate_unref(enumerate);
 
@@ -793,6 +925,7 @@ add_device(struct manager *mgr, struct udev_device *udev)
 	printf("\tDriver    : %s\n", device->driver_name);
 	printf("\tKernel map: %s\n", device->keymap_name);
 	printf("\tDevnode fd: %i\n", device->evdev_fd);
+	printf("\tLIRC fd   : %i\n", device->lirc_fd);
 	printf("\tDBUS path : %s\n", device->path);
 	printf("\tProtocols : %s\n",
 	       udev_device_get_sysattr_value(udev, "protocols"));
diff --git a/rcm-server-main.h b/rcm-server-main.h
index 689c4fd..4d2b57b 100644
--- a/rcm-server-main.h
+++ b/rcm-server-main.h
@@ -8,6 +8,8 @@ struct device {
 	char *driver_name;
 	char *keymap_name;
 	char *error;
+	int lirc_fd;
+	sd_event_source *lirc_ev;
 	int evdev_fd;
 	sd_event_source *evdev_ev;
 	struct libevdev *evdev_dev;
diff --git a/shared.c b/shared.c
index b07d8c0..a9875bc 100644
--- a/shared.c
+++ b/shared.c
@@ -1,5 +1,7 @@
 #include <stdlib.h>
 #include <strings.h>
+#include <errno.h>
+#include <limits.h>
 
 #include "shared.h"
 
@@ -43,3 +45,93 @@ get_linux_keycode_by_name(const char *name)
 	return NULL;
 }
 
+int
+strtol_strict(const char *str, int *result)
+{
+	char *end;
+	long val;
+
+	errno = 0;
+	val = strtol(str, &end, 10);
+
+	if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
+		return -EINVAL;
+
+	if (errno != 0 && val == 0)
+		return -EINVAL;
+
+	if (end == str)
+		return -EINVAL;
+
+	if (*end != '\0')
+		return -EINVAL;
+
+	if (val < 1 || val > UINT16_MAX)
+		return -EINVAL;
+
+	*result = val;
+	return 0;
+}
+
+int
+strtoull_strict(const char *str, uint64_t *result)
+{
+	char *end;
+	unsigned long long val;
+
+	errno = 0;
+	val = strtoull(str, &end, 16);
+
+	if (errno == ERANGE && (val == ULLONG_MAX || val == 0))
+		return -EINVAL;
+
+	if (errno != 0 && val == 0)
+		return -EINVAL;
+
+	if (end == str)
+		return -EINVAL;
+
+	if (*end != '\0')
+		return -EINVAL;
+
+	if (val > UINT64_MAX)
+		return -EINVAL;
+
+	*result = val;
+	return 0;
+}
+
+uint8_t const byte_rev_table[256] = {
+	0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+	0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
+	0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+	0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
+	0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
+	0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+	0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
+	0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
+	0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+	0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
+	0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
+	0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+	0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
+	0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
+	0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+	0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
+	0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
+	0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+	0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
+	0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
+	0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+	0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
+	0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
+	0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+	0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
+	0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
+	0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+	0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
+	0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
+	0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+	0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
+	0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, 
+};
diff --git a/shared.h b/shared.h
index 7dfcfca..1857555 100644
--- a/shared.h
+++ b/shared.h
@@ -22,4 +22,15 @@ extern struct linux_input_keycode linux_input_keycodes[];
 
 struct linux_input_keycode *get_linux_keycode_by_name(const char *name);
 
+int strtol_strict(const char *str, int *result);
+
+int strtoull_strict(const char *str, uint64_t *result);
+
+extern uint8_t const byte_rev_table[256];
+
+static inline uint8_t bitrev8(uint8_t byte)
+{
+	return byte_rev_table[byte];
+}
+
 #endif