add some more code

This adds a basic "worker" program.

You can now do something like

    ./server &
    ./worker &
    ./client ci_run URL REV

and the server should pass a message to worker, after which it should
clone the repository at URL, checkout REV, and try to run the CI script.

It's extremely unfinished: I need to sort out the graceful shutdown, how
the server manages workers, etc.

1 files changed, 86 insertions, 0 deletions

diff --git a/src/worker_main.c b/src/worker_main.c
new file mode 100644
index 0000000..d88071d
--- /dev/null
+++ b/src/worker_main.c
@@ -0,0 +1,86 @@
+#include "const.h"
+#include "worker.h"
+
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static struct settings default_settings()
+{
+	struct settings settings = {DEFAULT_HOST, DEFAULT_PORT};
+	return settings;
+}
+
+static void print_usage(const char *argv0)
+{
+	printf("usage: %s [-h|--help] [-V|--version] [-H|--host HOST] [-p|--port PORT]\n", argv0);
+}
+
+static void print_version()
+{
+	printf("%s\n", VERSION);
+}
+
+static int parse_settings(struct settings *settings, int argc, char *argv[])
+{
+	int opt, longind;
+
+	*settings = default_settings();
+
+	static struct option long_options[] = {
+	    {"help", no_argument, 0, 'h'},
+	    {"version", no_argument, 0, 'V'},
+	    {"host", required_argument, 0, 'H'},
+	    {"port", required_argument, 0, 'p'},
+	    {0, 0, 0, 0},
+	};
+
+	while ((opt = getopt_long(argc, argv, "hVH:p:", long_options, &longind)) != -1) {
+		switch (opt) {
+		case 'h':
+			print_usage(argv[0]);
+			exit(0);
+			break;
+		case 'V':
+			print_version();
+			exit(0);
+			break;
+		case 'H':
+			settings->host = optarg;
+			break;
+		case 'p':
+			settings->port = optarg;
+			break;
+		default:
+			print_usage(argv[0]);
+			exit(1);
+			break;
+		}
+	}
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	struct settings settings;
+	struct worker worker;
+	int ret = 0;
+
+	ret = parse_settings(&settings, argc, argv);
+	if (ret < 0)
+		return ret;
+
+	ret = worker_create(&worker, &settings);
+	if (ret < 0)
+		return ret;
+
+	ret = worker_main(&worker, argc - optind, argv + optind);
+	if (ret < 0)
+		goto destroy_worker;
+
+destroy_worker:
+	worker_destroy(&worker);
+
+	return ret;
+}