Move parts over to util.c

1 files changed, 34 insertions, 0 deletions

diff --git a/util.c b/util.c
new file mode 100644
index 0000000..d9afa59
--- /dev/null
+++ b/util.c
@@ -0,0 +1,34 @@
+/* See LICENSE file for license details. */
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+void die(char *msg) {
+	fputs(msg, stderr);
+	exit(EXIT_FAILURE);
+}
+
+/* plundered from suckless' sic */
+static int
+dial(char *host, char *port) {
+	static struct addrinfo hints;
+	int srv;
+	struct addrinfo *res, *r;
+
+	memset(&hints, 0, sizeof hints);
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+	if(getaddrinfo(host, port, &hints, &res) != 0)
+		die("error: cannot resolve hostname\n");
+	for(r = res; r; r = r->ai_next) {
+		if((srv = socket(r->ai_family, r->ai_socktype, r->ai_protocol)) == -1)
+			continue;
+		if(connect(srv, r->ai_addr, r->ai_addrlen) == 0)
+			break;
+		close(srv);
+	}
+	freeaddrinfo(res);
+	if(!r)
+		die("error: cannot connect to host\n");
+	return srv;
+}