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-rw-r--r--src/mds-kkbd.c201
1 files changed, 195 insertions, 6 deletions
diff --git a/src/mds-kkbd.c b/src/mds-kkbd.c
index ccf62d1..40b4805 100644
--- a/src/mds-kkbd.c
+++ b/src/mds-kkbd.c
@@ -59,6 +59,12 @@
#define MDS_KKBD_VARS_VERSION 0
+/**
+ * The name of the keyboard for which its server implements control
+ */
+#define KEYBOARD_ID "kernel"
+
+
/**
* This variable should declared by the actual server implementation.
@@ -80,7 +86,7 @@ server_characteristics_t server_characteristics =
/**
* Value of the ‘Message ID’ header for the next message
*/
-static int32_t message_id = 1;
+static int32_t message_id = 2;
/**
* Buffer for received messages
@@ -173,9 +179,19 @@ int initialise_server(void)
const char* const message =
"Command: intercept\n"
"Message ID: 0\n"
- "Length: 18\n"
+ "Length: 54\n"
+ "\n"
+ "Command: set-keyboard-leds\n"
+ "Command: get-keyboard-leds\n"
+ /* NEXT MESSAGE */
+ "Command: intercept\n"
+ "Message ID: 1\n"
+ "Modifying: yes\n"
+ "Length: 59\n"
"\n"
- "Command: keyboard\n";
+ "Command: enumerate-keyboards\n"
+ "Command: keyboard-enumeration\n"
+ ;
if (full_send(message, strlen(message)))
return 1;
@@ -361,7 +377,7 @@ int master_loop(void)
int r = mds_message_read(&received, socket_fd);
if (r == 0)
{
- if (r = 0, r == 0) /* TODO handle_message() */
+ if (r = handle_message(), r == 0)
continue;
}
@@ -429,6 +445,179 @@ void* keyboard_loop(void* data)
/**
+ * Handle the received message
+ *
+ * @return Zero on success, -1 on error
+ */
+int handle_message(void)
+{
+ const char* recv_command = NULL;
+ const char* recv_client_id = "0:0";
+ const char* recv_message_id = NULL;
+ const char* recv_modify_id = NULL;
+ const char* recv_active = NULL;
+ const char* recv_mask = NULL;
+ const char* recv_keyboard = NULL;
+ size_t i;
+
+#define __get_header(storage, header) \
+ (startswith(received.headers[i], header)) \
+ storage = received.headers[i] + strlen(header)
+
+ for (i = 0; i < received.header_count; i++)
+ {
+ if __get_header(recv_command, "Command: ");
+ else if __get_header(recv_client_id, "Client ID: ");
+ else if __get_header(recv_message_id, "Message ID: ");
+ else if __get_header(recv_modify_id, "Modify ID: ");
+ else if __get_header(recv_active, "Active: ");
+ else if __get_header(recv_mask, "Mask: ");
+ else if __get_header(recv_keyboard, "Keyboard: ");
+ }
+
+#undef __get_header
+
+ if (recv_message_id == NULL)
+ {
+ eprint("received message with ID, ignoring, master server is misbehaving.");
+ return 0;
+ }
+
+ if (recv_command == NULL)
+ return 0; /* How did that get here, not matter, just ignore it? */
+
+ if (strequals(recv_command, "enumerate-keyboards"))
+ return handle_enumerate_keyboards(recv_client_id, recv_message_id, recv_modify_id);
+ if (strequals(recv_command, "keyboard-enumeration"))
+ return handle_keyboard_enumeration(recv_modify_id);
+ if (strequals(recv_command, "set-keyboard-leds"))
+ return handle_set_keyboard_leds(recv_active, recv_mask, recv_keyboard);
+ if (strequals(recv_command, "get-keyboard-leds"))
+ return handle_get_keyboard_leds(recv_client_id, recv_message_id, recv_keyboard);
+
+ return 0; /* How did that get here, not matter, just ignore it? */
+}
+
+
+/**
+ * Handle the received message after it has been
+ * identified to contain `Command: enumerate-keyboards`
+ *
+ * @param recv_client_id The value of the `Client ID`-header, `NULL` if omitted
+ * @param recv_message_id The value of the `Message ID`-header, `NULL` if omitted
+ * @param recv_modify_id The value of the `Modify ID`-header, `NULL` if omitted
+ * @return Zero on success, -1 on error
+ */
+int handle_enumerate_keyboards(const char* recv_client_id, const char* recv_message_id,
+ const char* recv_modify_id)
+{
+ if (recv_modify_id == NULL)
+ {
+ eprint("did not get add modify ID, ignoring.");
+ return 0;
+ }
+
+ if (strequals(recv_client_id, "0:0"))
+ {
+ eprint("received information request from an anonymous client, sending non-modifying response.");
+ /* TODO send non-modifying response */
+ return 0;
+ }
+
+ /* TODO */
+
+ return 0;
+}
+
+
+/**
+ * Handle the received message after it has been
+ * identified to contain `Command: keyboard-enumeration`
+ *
+ * @param recv_modify_id The value of the `Modify ID`-header, `NULL` if omitted
+ * @return Zero on success, -1 on error
+ */
+int handle_keyboard_enumeration(const char* recv_modify_id)
+{
+ if (recv_modify_id == NULL)
+ {
+ eprint("did not get add modify ID, ignoring.");
+ return 0;
+ }
+
+ /* TODO */
+
+ return 0;
+}
+
+
+/**
+ * Handle the received message after it has been
+ * identified to contain `Command: set-keyboard-leds`
+ *
+ * @param recv_active The value of the `Active`-header, `NULL` if omitted
+ * @param recv_mask The value of the `Mask`-header, `NULL` if omitted
+ * @param recv_keyboard The value of the `Keyboard`-header, `NULL` if omitted
+ * @return Zero on success, -1 on error
+ */
+int handle_set_keyboard_leds(const char* recv_active, const char* recv_mask,
+ const char* recv_keyboard)
+{
+ if ((recv_keyboard != NULL) && !strequals(recv_keyboard, KEYBOARD_ID))
+ return 0;
+
+ if (recv_active == NULL)
+ {
+ eprint("received LED writing request without active header, ignoring.");
+ return 0;
+ }
+
+ if (recv_mask == NULL)
+ {
+ eprint("received LED writing request without mask header, ignoring.");
+ return 0;
+ }
+
+ /* TODO */
+
+ return 0;
+}
+
+
+/**
+ * Handle the received message after it has been
+ * identified to contain `Command: get-keyboard-leds`
+ *
+ * @param recv_client_id The value of the `Client ID`-header, `NULL` if omitted
+ * @param recv_message_id The value of the `Message ID`-header, `NULL` if omitted
+ * @param recv_keyboard The value of the `Keyboard`-header, `NULL` if omitted
+ * @return Zero on success, -1 on error
+ */
+int handle_get_keyboard_leds(const char* recv_client_id, const char* recv_message_id,
+ const char* recv_keyboard)
+{
+ if ((recv_keyboard != NULL) && !strequals(recv_keyboard, KEYBOARD_ID))
+ return 0;
+
+ if (recv_keyboard == NULL)
+ {
+ eprint("received LED reading request but no specified keyboard, ignoring.");
+ return 0;
+ }
+
+ if (strequals(recv_client_id, "0:0"))
+ {
+ eprint("received information request from an anonymous client, ignoring.");
+ return 0;
+ }
+
+ /* TODO */
+
+ return 0;
+}
+
+
+/**
* Send a singal to all threads except the current thread
*
* @param signo The signal
@@ -607,7 +796,7 @@ int send_key(int* restrict scancode, int trio)
"Scancode: %i %i %i\n"
"Keycode: %i\n"
"Released: %s\n"
- "Keyboard: kernel\n"
+ "Keyboard: " KEYBOARD_ID "\n"
"Message ID: " PRIi32 "\n"
"\n",
scancode[0], scancode[1], scancode[2], keycode,
@@ -618,7 +807,7 @@ int send_key(int* restrict scancode, int trio)
"Scancode: %i\n"
"Keycode: %i\n"
"Released: %s\n"
- "Keyboard: kernel\n"
+ "Keyboard: " KEYBOARD_ID "\n"
"Message ID: " PRIi32 "\n"
"\n",
scancode[0], keycode,