Add initial wayvncctl executable

Signed-off-by: Jim Ramsay <i.am@jimramsay.com>

meson.build

@@ -109,6 +109,18 @@ dependencies = [
 	jansson,
 ]
 
+ctlsources = [
+	'src/wayvncctl.c',
+	'src/util.c',
+	'src/json-ipc.c',
+	'src/ctl-client.c',
+	'src/strlcpy.c',
+]
+
+ctldependencies = [
+	jansson,
+]
+
 config = configuration_data()
 
 config.set('PREFIX', '"' + prefix + '"')
@@ -147,6 +159,14 @@ executable(
 	install: true,
 )
 
+executable(
+	'wayvncctl',
+	ctlsources,
+	dependencies: ctldependencies,
+	include_directories: inc,
+	install: true,
+)
+
 scdoc = dependency('scdoc', native: true, required: get_option('man-pages'))
 if scdoc.found()
 	scdoc_prog = find_program(scdoc.get_pkgconfig_variable('scdoc'), native: true)

src/wayvncctl.c

@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2022 Jim Ramsay
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <assert.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <signal.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "util.h"
+#include "ctl-client.h"
+
+#define MAYBE_UNUSED __attribute__((unused))
+
+struct wayvncctl {
+	bool do_exit;
+
+	struct ctl_client* ctl;
+};
+
+static int wayvncctl_usage(FILE* stream, int rc)
+{
+	static const char* usage =
+"Usage: wayvncctl [options] [command [--param1=value1 ...]]\n"
+"\n"
+"Connects to and interacts with a running wauvnc instance."
+"\n"
+"Try the \"help\" command for a list of available commands.\n"
+"\n"
+"    -S,--socket=<path>                        Wayvnc control socket path.\n"
+"                                              Default: $XDG_RUNTIME_DIR/wayvncctl\n"
+"    -V,--version                              Show version info.\n"
+"    -v,--verbose                              Be more verbose.\n"
+"    -h,--help                                 Get help (this text).\n"
+"\n";
+
+	fprintf(stream, "%s", usage);
+
+	return rc;
+}
+
+static int show_version(void)
+{
+	printf("wayvnc: %s\n", wayvnc_version);
+	return 0;
+}
+
+int main(int argc, char* argv[])
+{
+	struct wayvncctl self = { 0 };
+
+	static const char* shortopts = "+S:hVv";
+
+	bool verbose = false;
+	const char* socket_path = NULL;
+
+	static const struct option longopts[] = {
+		{ "socket", required_argument, NULL, 'S' },
+		{ "help", no_argument, NULL, 'h' },
+		{ "version", no_argument, NULL, 'V' },
+		{ "verbose", no_argument, NULL, 'v' },
+		{ NULL, 0, NULL, 0 }
+	};
+
+	while (1) {
+		int c = getopt_long(argc, argv, shortopts, longopts, NULL);
+		if (c < 0)
+			break;
+
+		switch (c) {
+		case 'S':
+			socket_path = optarg;
+			break;
+		case 'v':
+			verbose = true;
+			break;
+		case 'V':
+			return show_version();
+		case 'h':
+			return wayvncctl_usage(stdout, 0);
+		default:
+			return wayvncctl_usage(stderr, 1);
+		}
+	}
+	argc -= optind;
+	argv = &argv[optind];
+
+	ctl_client_debug_log(verbose);
+	self.ctl = ctl_client_new(socket_path, &self);
+	if (!self.ctl)
+		goto ctl_client_failure;
+
+	int result = ctl_client_run_command(self.ctl, argc, argv);
+
+	ctl_client_destroy(self.ctl);
+
+	return result;
+
+ctl_client_failure:
+	return 1;
+}