torrentd

commit b13eb6063df000d202ae7568db7f2c0d6c826a77
parent 29b8cb7c38ed9c8cdbf1dddfdde3f2cfa25f763f
Author: sin <sin@2f30.org>
Date:   Thu, 17 Dec 2015 16:29:28 +0000

Add sock.c

Diffstat:
M
Makefile
 | 
1
+
A
sock.c
 | 
49
+++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -10,6 +10,7 @@ OBJ =\
 	ben.o\
 	sbtd.o\
 	sha1.o\
+	sock.o\
 	tracker.o\
 	util.o
 
diff --git a/sock.c b/sock.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2015 Dimitris Papastamos <sin@2f30.org>
+ *
+ * Permission to use, copy, modify, and 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 <sys/types.h>
+#include <sys/socket.h>
+
+#include <netdb.h>
+
+#include <err.h>
+#include <string.h>
+#include <unistd.h>
+
+int
+dial(char *host, char *port)
+{
+	struct addrinfo hints, *res, *r;
+	int sock;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_INET;
+	hints.ai_socktype = SOCK_STREAM;
+	if (getaddrinfo(host, port, &hints, &res))
+		errx(1, "can't resolve %s", host);
+	for (r = res; r; r = r->ai_next) {
+		sock = socket(r->ai_family, r->ai_socktype, 0);
+		if (sock < 0)
+			continue;
+		if (!connect(sock, r->ai_addr, r->ai_addrlen))
+			break;
+		close(sock);
+	}
+	freeaddrinfo(res);
+	if (!r)
+		errx(1, "cannot connect to %s", host);
+	return sock;
+}