shithub: moonfish

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improve signal handling for 'lichess' CLI

--- a/tools/lichess.c

+++ b/tools/lichess.c

@@ -5,6 +5,7 @@

 #include <stdlib.h>

 #include <pthread.h>

 #include <signal.h>

+#include <sys/wait.h>

 #include <cjson/cJSON.h>

@@ -456,6 +457,15 @@

 	return username;

 }

+static void moonfish_signal(int signal)

+{

+	(void) signal;

+	

+	for (;;) {

+		if (waitpid(-1, NULL, WNOHANG) <= 0) break;

+	}

+}

+

 int main(int argc, char **argv)

 {

 	static char *format = "<cmd> <args>...";

@@ -472,6 +482,7 @@

 	int command_count;

 	struct tls *tls;

 	char *username;

+	struct sigaction action;

 	command = moonfish_args(args, format, argc, argv);

 	command_count = argc - (command - argv);

@@ -490,7 +501,14 @@

 		}

 	}

-	if (signal(SIGCHLD, SIG_IGN) == SIG_ERR) return 1;

+	action.sa_handler = &moonfish_signal;

+	sigemptyset(&action.sa_mask);

+	action.sa_flags = 0;

+	

+	if (sigaction(SIGCHLD, &action, NULL)) {

+		perror(argv[0]);

+		return 1;

+	}

 	tls = moonfish_connect(argv[0], args[0].value, args[1].value);

 	moonfish_request(argv[0], tls, args[0].value, "GET /api/stream/event", token, NULL, 0);

-- 

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