move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7

1 files changed, 216 insertions, 0 deletions

diff --git a/src/ipaccess/abisip-find.c b/src/ipaccess/abisip-find.c
new file mode 100644
index 000000000..21d9f2290
--- /dev/null
+++ b/src/ipaccess/abisip-find.c
@@ -0,0 +1,216 @@
+/* ip.access nanoBTS configuration tool */
+
+/* (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+
+#include <osmocom/core/select.h>
+#include <osmocom/core/timer.h>
+#include <osmocom/gsm/protocol/ipaccess.h>
+#include <osmocom/gsm/ipa.h>
+#include <openbsc/gsm_data.h>
+
+static int udp_sock(const char *ifname)
+{
+	int fd, rc, bc = 1;
+	struct sockaddr_in sa;
+
+	fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if (fd < 0)
+		return fd;
+
+	if (ifname) {
+#ifdef __FreeBSD__
+		rc = setsockopt(fd, SOL_SOCKET, IP_RECVIF, ifname,
+				strlen(ifname));
+#else
+		rc = setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, ifname,
+				strlen(ifname));
+#endif
+		if (rc < 0)
+			goto err;
+	}
+
+	memset(&sa, 0, sizeof(sa));
+	sa.sin_family = AF_INET;
+	sa.sin_port = htons(3006);
+	sa.sin_addr.s_addr = INADDR_ANY;
+
+	rc = bind(fd, (struct sockaddr *)&sa, sizeof(sa));
+	if (rc < 0)
+		goto err;
+
+	rc = setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &bc, sizeof(bc));
+	if (rc < 0)
+		goto err;
+
+#if 0
+	/* we cannot bind, since the response packets don't come from
+	 * the broadcast address */
+	sa.sin_family = AF_INET;
+	sa.sin_port = htons(3006);
+	inet_aton("255.255.255.255", &sa.sin_addr);
+
+	rc = connect(fd, (struct sockaddr *)&sa, sizeof(sa));
+	if (rc < 0)
+		goto err;
+#endif
+	return fd;
+
+err:
+	close(fd);
+	return rc;
+}
+
+const unsigned char find_pkt[] = { 0x00, 0x0b+8, IPAC_PROTO_IPACCESS, 0x00,
+				IPAC_MSGT_ID_GET,
+					0x01, IPAC_IDTAG_MACADDR,
+					0x01, IPAC_IDTAG_IPADDR,
+					0x01, IPAC_IDTAG_UNIT,
+					0x01, IPAC_IDTAG_LOCATION1,
+					0x01, IPAC_IDTAG_LOCATION2,
+					0x01, IPAC_IDTAG_EQUIPVERS,
+					0x01, IPAC_IDTAG_SWVERSION,
+					0x01, IPAC_IDTAG_UNITNAME,
+					0x01, IPAC_IDTAG_SERNR,
+				};
+
+
+static int bcast_find(int fd)
+{
+	struct sockaddr_in sa;
+
+	sa.sin_family = AF_INET;
+	sa.sin_port = htons(3006);
+	inet_aton("255.255.255.255", &sa.sin_addr);
+
+	return sendto(fd, find_pkt, sizeof(find_pkt), 0, (struct sockaddr *) &sa, sizeof(sa));
+}
+
+static int parse_response(unsigned char *buf, int len)
+{
+	uint8_t t_len;
+	uint8_t t_tag;
+	uint8_t *cur = buf;
+
+	while (cur < buf + len) {
+		t_len = *cur++;
+		t_tag = *cur++;
+		
+		printf("%s='%s'  ", ipa_ccm_idtag_name(t_tag), cur);
+
+		cur += t_len;
+	}
+	printf("\n");
+	return 0;
+}
+
+static int read_response(int fd)
+{
+	unsigned char buf[255];
+	struct sockaddr_in sa;
+	int len;
+	socklen_t sa_len = sizeof(sa);
+
+	len = recvfrom(fd, buf, sizeof(buf), 0, (struct sockaddr *)&sa, &sa_len);
+	if (len < 0)
+		return len;
+
+	/* 2 bytes length, 1 byte protocol */
+	if (buf[2] != IPAC_PROTO_IPACCESS)
+		return 0;
+
+	if (buf[4] != IPAC_MSGT_ID_RESP)
+		return 0;
+
+	return parse_response(buf+6, len-6);
+}
+
+static int bfd_cb(struct osmo_fd *bfd, unsigned int flags)
+{
+	if (flags & BSC_FD_READ)
+		return read_response(bfd->fd);
+	if (flags & BSC_FD_WRITE) {
+		bfd->when &= ~BSC_FD_WRITE;
+		return bcast_find(bfd->fd);
+	}
+	return 0;
+}
+
+static struct osmo_timer_list timer;
+
+static void timer_cb(void *_data)
+{
+	struct osmo_fd *bfd = _data;
+
+	bfd->when |= BSC_FD_WRITE;
+
+	osmo_timer_schedule(&timer, 5, 0);
+}
+
+int main(int argc, char **argv)
+{
+	struct osmo_fd bfd;
+	char *ifname = NULL;
+	int rc;
+
+	printf("abisip-find (C) 2009 by Harald Welte\n");
+	printf("This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY\n\n");
+
+	if (argc < 2) {
+		fprintf(stdout, "you might need to specify the outgoing\n"
+			" network interface, e.g. ``%s eth0''\n", argv[0]);
+	} else {
+		ifname = argv[1];
+	}
+
+	bfd.cb = bfd_cb;
+	bfd.when = BSC_FD_READ | BSC_FD_WRITE;
+	bfd.fd = udp_sock(ifname);
+	if (bfd.fd < 0) {
+		perror("Cannot create local socket for broadcast udp");
+		exit(1);
+	}
+
+	rc = osmo_fd_register(&bfd);
+	if (rc < 0) {
+		fprintf(stderr, "Cannot register FD\n");
+		exit(1);
+	}
+
+	osmo_timer_setup(&timer, timer_cb, &bfd);
+	osmo_timer_schedule(&timer, 5, 0);
+
+	printf("Trying to find ip.access BTS by broadcast UDP...\n");
+
+	while (1) {
+		rc = osmo_select_main(0);
+		if (rc < 0)
+			exit(3);
+	}
+
+	exit(0);
+}
+