Initial commit to Gerrittizen/20120530.11.0_branch1.0

1 files changed, 112 insertions, 0 deletions

diff --git a/svc_socket.c b/svc_socket.c
new file mode 100644
index 0000000..927b2ea
--- /dev/null
+++ b/svc_socket.c
@@ -0,0 +1,112 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <errno.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+
+#include "common.h"
+#include "pot.h"
+
+static int svc_socket (u_long number, int type, int protocol, int port, int reuse)
+{
+	struct sockaddr_in addr;
+	char rpcdata [1024], servdata [1024];
+	struct rpcent rpcbuf, *rpcp = NULL;
+	struct servent servbuf, *servp = NULL;
+	int sock, ret;
+	const char *proto = protocol == IPPROTO_TCP ? "tcp" : "udp";
+
+	if ((sock = socket (AF_INET, type, protocol)) < 0) {
+		errstr(_("Cannot create socket: %s\n"), strerror(errno));
+		return -1;
+	}
+
+	if (reuse) {
+		ret = 1;
+		if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &ret, sizeof(ret)) < 0) {
+			errstr(_("Cannot set socket options: %s\n"), strerror(errno));
+			return -1;
+		}
+	}
+
+	memset(&addr, 0, sizeof(addr));
+	addr.sin_family = AF_INET;
+
+	if (!port) {
+		ret = getrpcbynumber_r(number, &rpcbuf, rpcdata, sizeof(rpcdata), &rpcp);
+		if (ret == 0 && rpcp != NULL) {
+			/* First try name */
+			ret = getservbyname_r(rpcp->r_name, proto, &servbuf, servdata,
+			                       sizeof servdata, &servp);
+			if ((ret != 0 || servp == NULL) && rpcp->r_aliases) {
+				const char **a;
+
+				/* Then we try aliases.	*/
+				for (a = (const char **) rpcp->r_aliases; *a != NULL; a++) {
+					ret = getservbyname_r(*a, proto, &servbuf, servdata,
+							 sizeof servdata, &servp);
+					if (ret == 0 && servp != NULL)
+						break;
+				}
+			}
+			if (ret == 0 && servp != NULL)
+				port = servp->s_port;
+		}
+	}
+	else
+		port = htons(port);
+
+	if (port) {
+		addr.sin_port = port;
+		if (bind(sock, (struct sockaddr *) &addr, sizeof(struct sockaddr_in)) < 0) {
+			errstr(_("Cannot bind to given address: %s\n"), strerror(errno));
+			close (sock);
+			return -1;
+		}
+	}
+	else {
+		/* Service not found? */
+		close(sock);
+		return -1;
+	}
+
+	return sock;
+}
+
+/*
+ * Create and bind a TCP socket based on program number
+ */
+int svctcp_socket(u_long number, int port, int reuse)
+{
+	return svc_socket(number, SOCK_STREAM, IPPROTO_TCP, port, reuse);
+}
+
+/*
+ * Create and bind a UDP socket based on program number
+ */
+int svcudp_socket(u_long number, int port, int reuse)
+{
+	return svc_socket(number, SOCK_DGRAM, IPPROTO_UDP, port, reuse);
+}