From da4f881cc99b7cdcf333c73fbf16c74a4d19dd05 Mon Sep 17 00:00:00 2001
From: Charlotte Meyer <dev@buffet.sh>
Date: Sat, 13 Apr 2019 21:45:34 +0200
Subject: [PATCH] Basic command handling (without arguments)

---
 include/kiwmi/commands.h | 21 +++++++++++++++++
 kiwmi/commands.c         | 50 ++++++++++++++++++++++++++++++++++++++++
 kiwmi/frontend.c         | 11 ++++++---
 kiwmi/meson.build        |  1 +
 4 files changed, 80 insertions(+), 3 deletions(-)
 create mode 100644 include/kiwmi/commands.h
 create mode 100644 kiwmi/commands.c

diff --git a/include/kiwmi/commands.h b/include/kiwmi/commands.h
new file mode 100644
index 0000000..227891c
--- /dev/null
+++ b/include/kiwmi/commands.h
@@ -0,0 +1,21 @@
+/* Copyright (c), Charlotte Meyer <dev@buffet.sh>
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef KIWMI_COMMANDS_H
+#define KIWMI_COMMANDS_H
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "kiwmi/server.h"
+
+bool handle_client_command(
+    char *command,
+    FILE *client,
+    struct kiwmi_server *server);
+
+#endif /* KIWMI_COMMANDS_H */
diff --git a/kiwmi/commands.c b/kiwmi/commands.c
new file mode 100644
index 0000000..f3f6d0a
--- /dev/null
+++ b/kiwmi/commands.c
@@ -0,0 +1,50 @@
+/* Copyright (c), Charlotte Meyer <dev@buffet.sh>
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include "kiwmi/commands.h"
+
+#include <string.h>
+
+static bool
+cmd_quit(
+    FILE *UNUSED(client),
+    const char **UNUSED(args),
+    struct kiwmi_server *server)
+{
+    wl_display_terminate(server->wl_display);
+    return false;
+}
+
+typedef bool (
+    *cmd_handler)(FILE *client, const char **args, struct kiwmi_server *server);
+
+static const struct {
+    const char *name;
+    cmd_handler handler;
+} commands[] = {
+    {"quit", cmd_quit},
+};
+
+bool
+handle_client_command(char *command, FILE *client, struct kiwmi_server *server)
+{
+#define SIZE(arr) (sizeof((arr)) / sizeof(*(arr)))
+
+    const char *name = strtok(command, " \t\r");
+
+    for (size_t i = 0; i < SIZE(commands); ++i) {
+	if (strcmp(name, commands[i].name) == 0) {
+	    return commands[i].handler(client, NULL, server);
+	}
+    }
+
+    fprintf(client, "Unknown command: %s\n", name);
+
+    return false;
+
+#undef SIZE
+}
diff --git a/kiwmi/frontend.c b/kiwmi/frontend.c
index 5ade5b2..f805742 100644
--- a/kiwmi/frontend.c
+++ b/kiwmi/frontend.c
@@ -20,6 +20,7 @@
 
 #include <wlr/util/log.h>
 
+#include "kiwmi/commands.h"
 #include "kiwmi/server.h"
 
 static void
@@ -40,10 +41,12 @@ display_destroy_notify(struct wl_listener *listener, void *UNUSED(data))
 }
 
 static int
-ipc_connection(int fd, uint32_t mask, void *UNUSED(data))
+ipc_connection(int fd, uint32_t mask, void *data)
 {
     wlr_log(WLR_DEBUG, "Received an IPC event");
 
+    struct kiwmi_server *server = data;
+
     if (!(mask & WL_EVENT_READABLE)) {
         return 0;
     }
@@ -85,8 +88,10 @@ ipc_connection(int fd, uint32_t mask, void *UNUSED(data))
 
     msg[msg_len] = '\0';
 
-    for (const char *cmd = strtok(msg, "\n"); cmd; cmd = strtok(NULL, "\n")) {
-        // TODO: handle client command
+    for (char *cmd = strtok(msg, "\n"); cmd; cmd = strtok(NULL, "\n")) {
+        if (!handle_client_command(cmd, client_file, server)) {
+            break;
+        }
     }
 
     fclose(client_file);
diff --git a/kiwmi/meson.build b/kiwmi/meson.build
index 3a8feeb..5c1d227 100644
--- a/kiwmi/meson.build
+++ b/kiwmi/meson.build
@@ -1,5 +1,6 @@
 kiwmi_sources = files(
   'main.c',
+  'commands.c',
   'frontend.c',
   'server.c',
   'desktop/desktop.c',