411 lines
9.2 KiB
C
411 lines
9.2 KiB
C
/* Relay UDT/all SCCP messages */
|
|
/*
|
|
* (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
|
|
* (C) 2010-2011 by On-Waves
|
|
* All Rights Reserved
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#include <mtp_data.h>
|
|
#include <mtp_level3.h>
|
|
#include <mtp_pcap.h>
|
|
#include <thread.h>
|
|
#include <bsc_data.h>
|
|
#include <snmp_mtp.h>
|
|
#include <cellmgr_debug.h>
|
|
#include <sctp_m2ua.h>
|
|
|
|
#include <osmocom/m2ua/m2ua_msg.h>
|
|
|
|
#include <osmocore/talloc.h>
|
|
|
|
#include <osmocom/vty/vty.h>
|
|
#include <osmocom/vty/telnet_interface.h>
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <unistd.h>
|
|
|
|
#ifndef _GNU_SOURCE
|
|
#define _GNU_SOURCE
|
|
#endif
|
|
#include <getopt.h>
|
|
|
|
#undef PACKAGE_NAME
|
|
#undef PACKAGE_VERSION
|
|
#undef PACKAGE_BUGREPORT
|
|
#undef PACKAGE_TARNAME
|
|
#undef PACKAGE_STRING
|
|
#include <cellmgr_config.h>
|
|
|
|
static struct log_target *stderr_target;
|
|
|
|
static char *config = "osmo_stp.cfg";
|
|
|
|
struct bsc_data bsc;
|
|
extern void cell_vty_init(void);
|
|
|
|
/*
|
|
* methods called from the MTP Level3 part
|
|
*/
|
|
void mtp_link_set_forward_sccp(struct mtp_link_set *link, struct msgb *_msg, int sls)
|
|
{
|
|
struct mtp_link_set *target;
|
|
|
|
target = bsc.m2ua_set == link ? bsc.link_set : bsc.m2ua_set;
|
|
mtp_link_set_submit_sccp_data(target, sls, _msg->l2h, msgb_l2len(_msg));
|
|
}
|
|
|
|
void mtp_link_set_forward_isup(struct mtp_link_set *set, struct msgb *msg, int sls)
|
|
{
|
|
struct mtp_link_set *target;
|
|
|
|
target = bsc.m2ua_set == set ? bsc.link_set : bsc.m2ua_set;
|
|
mtp_link_set_submit_isup_data(target, sls, msg->l3h, msgb_l3len(msg));
|
|
}
|
|
|
|
void mtp_linkset_down(struct mtp_link_set *set)
|
|
{
|
|
set->available = 0;
|
|
mtp_link_set_stop(set);
|
|
}
|
|
|
|
void mtp_linkset_up(struct mtp_link_set *set)
|
|
{
|
|
set->available = 1;
|
|
mtp_link_set_reset(set);
|
|
}
|
|
|
|
static void print_usage()
|
|
{
|
|
printf("Usage: osmo-stp\n");
|
|
}
|
|
|
|
static void sigint()
|
|
{
|
|
static pthread_mutex_t exit_mutex = PTHREAD_MUTEX_INITIALIZER;
|
|
static int handled = 0;
|
|
|
|
/* failed to lock */
|
|
if (pthread_mutex_trylock(&exit_mutex) != 0)
|
|
return;
|
|
if (handled)
|
|
goto out;
|
|
|
|
printf("Terminating.\n");
|
|
handled = 1;
|
|
if (bsc.setup)
|
|
link_shutdown_all(bsc.link_set);
|
|
exit(0);
|
|
|
|
out:
|
|
pthread_mutex_unlock(&exit_mutex);
|
|
}
|
|
|
|
static void print_help()
|
|
{
|
|
printf(" Some useful help...\n");
|
|
printf(" -h --help this text\n");
|
|
printf(" -c --config=CFG The config file to use.\n");
|
|
printf(" -p --pcap=FILE. Write MSUs to the PCAP file.\n");
|
|
printf(" -c --once. Send the SLTM msg only once.\n");
|
|
printf(" -v --version. Print the version number\n");
|
|
}
|
|
|
|
static void handle_options(int argc, char **argv)
|
|
{
|
|
while (1) {
|
|
int option_index = 0, c;
|
|
static struct option long_options[] = {
|
|
{"help", 0, 0, 'h'},
|
|
{"config", 1, 0, 'c'},
|
|
{"pcap", 1, 0, 'p'},
|
|
{"version", 0, 0, 0},
|
|
{0, 0, 0, 0},
|
|
};
|
|
|
|
c = getopt_long(argc, argv, "hc:p:v",
|
|
long_options, &option_index);
|
|
if (c == -1)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'h':
|
|
print_usage();
|
|
print_help();
|
|
exit(0);
|
|
case 'p':
|
|
if (bsc.pcap_fd >= 0)
|
|
close(bsc.pcap_fd);
|
|
bsc.pcap_fd = open(optarg, O_WRONLY | O_TRUNC | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP| S_IROTH);
|
|
if (bsc.pcap_fd < 0) {
|
|
fprintf(stderr, "Failed to open PCAP file.\n");
|
|
exit(0);
|
|
}
|
|
mtp_pcap_write_header(bsc.pcap_fd);
|
|
break;
|
|
case 'c':
|
|
config = optarg;
|
|
break;
|
|
case 'v':
|
|
printf("This is %s version %s.\n", PACKAGE, VERSION);
|
|
exit(0);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown option.\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct mtp_link_set *find_link_set(struct bsc_data *bsc,
|
|
int len, const char *buf)
|
|
{
|
|
if (strncmp(buf, "mtp", len) == 0)
|
|
return bsc->link_set;
|
|
else if (strncmp(buf, "m2ua", len) == 0)
|
|
return bsc->m2ua_set;
|
|
return NULL;
|
|
}
|
|
|
|
static int inject_read_cb(struct bsc_fd *fd, unsigned int what)
|
|
{
|
|
struct msgb *msg;
|
|
struct m2ua_msg_part *data, *link;
|
|
struct bsc_data *bsc;
|
|
struct m2ua_msg *m2ua;
|
|
struct mtp_link_set *out_set;
|
|
uint8_t buf[4096];
|
|
|
|
bsc = fd->data;
|
|
|
|
int rc = read(fd->fd, buf, sizeof(buf));
|
|
if (rc <= 0) {
|
|
LOGP(DINP, LOGL_ERROR, "Failed to read from the console.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!bsc->allow_inject) {
|
|
LOGP(DINP, LOGL_ERROR, "Injecting messages is not allowed.\n");
|
|
return -1;
|
|
}
|
|
|
|
m2ua = m2ua_from_msg(rc, buf);
|
|
if (!m2ua) {
|
|
LOGP(DINP, LOGL_ERROR, "Failed to parse M2UA.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (m2ua->hdr.msg_class == M2UA_CLS_MAUP && m2ua->hdr.msg_type == M2UA_MAUP_DATA) {
|
|
data = m2ua_msg_find_tag(m2ua, M2UA_TAG_DATA);
|
|
if (!data) {
|
|
LOGP(DINP, LOGL_ERROR, "MAUP Data without data.\n");
|
|
goto exit;
|
|
}
|
|
|
|
if (data->len > 2048) {
|
|
LOGP(DINP, LOGL_ERROR, "Data is too big for this configuration.\n");
|
|
goto exit;
|
|
}
|
|
|
|
link = m2ua_msg_find_tag(m2ua, MUA_TAG_IDENT_TEXT);
|
|
if (!link) {
|
|
LOGP(DINP, LOGL_ERROR, "Interface Identifier Text is mandantory.\n");
|
|
goto exit;
|
|
}
|
|
|
|
if (link->len > 255) {
|
|
LOGP(DINP, LOGL_ERROR, "Spec violation. Ident text should be shorter than 255.\n");
|
|
goto exit;
|
|
}
|
|
|
|
out_set = find_link_set(bsc, link->len, (const char *) link->dat);
|
|
if (!out_set) {
|
|
LOGP(DINP, LOGL_ERROR, "Identified linkset does not exist.\n");
|
|
goto exit;
|
|
}
|
|
|
|
msg = msgb_alloc(2048, "inject-data");
|
|
if (!msg) {
|
|
LOGP(DINP, LOGL_ERROR, "Failed to allocate storage.\n");
|
|
goto exit;
|
|
}
|
|
|
|
msg->l2h = msgb_put(msg, data->len);
|
|
memcpy(msg->l2h, data->dat, data->len);
|
|
|
|
/* we are diretcly going to the output. no checking of anything */
|
|
if (mtp_link_set_send(out_set, msg) != 0) {
|
|
LOGP(DINP, LOGL_ERROR, "Failed to send message.\n");
|
|
msgb_free(msg);
|
|
}
|
|
}
|
|
|
|
exit:
|
|
m2ua_msg_free(m2ua);
|
|
return 0;
|
|
}
|
|
|
|
static int inject_init(struct bsc_data *bsc)
|
|
{
|
|
int fd;
|
|
struct sockaddr_in addr;
|
|
|
|
fd = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.sin_family = AF_INET;
|
|
addr.sin_port = htons(5001);
|
|
|
|
if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) != 0) {
|
|
LOGP(DINP, LOGL_ERROR, "Failed to bind to port 5001.\n");
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
bsc->inject_fd.fd = fd;
|
|
bsc->inject_fd.when = BSC_FD_READ;
|
|
bsc->inject_fd.cb = inject_read_cb;
|
|
bsc->inject_fd.data = bsc;
|
|
|
|
if (bsc_register_fd(&bsc->inject_fd) != 0) {
|
|
LOGP(DINP, LOGL_ERROR, "Failed to register.\n");
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int rc;
|
|
struct mtp_link *data;
|
|
struct mtp_m2ua_link *lnk;
|
|
INIT_LLIST_HEAD(&bsc.sccp_connections);
|
|
|
|
bsc.app = APP_STP;
|
|
bsc.dpc = 1;
|
|
bsc.opc = 0;
|
|
bsc.sccp_opc = -1;
|
|
bsc.isup_opc = -1;
|
|
bsc.udp_port = 3456;
|
|
bsc.udp_ip = NULL;
|
|
bsc.src_port = 1313;
|
|
bsc.ni_ni = MTP_NI_NATION_NET;
|
|
bsc.ni_spare = 0;
|
|
bsc.udp_nr_links = 1;
|
|
|
|
mtp_link_set_init();
|
|
thread_init();
|
|
|
|
log_init(&log_info);
|
|
stderr_target = log_target_create_stderr();
|
|
log_add_target(stderr_target);
|
|
|
|
/* enable filters */
|
|
log_set_all_filter(stderr_target, 1);
|
|
log_set_category_filter(stderr_target, DINP, 1, LOGL_INFO);
|
|
log_set_category_filter(stderr_target, DSCCP, 1, LOGL_INFO);
|
|
log_set_category_filter(stderr_target, DMSC, 1, LOGL_INFO);
|
|
log_set_category_filter(stderr_target, DMGCP, 1, LOGL_INFO);
|
|
log_set_print_timestamp(stderr_target, 1);
|
|
log_set_use_color(stderr_target, 0);
|
|
|
|
sccp_set_log_area(DSCCP);
|
|
m2ua_set_log_area(DM2UA);
|
|
|
|
bsc.setup = 0;
|
|
bsc.msc_address = "127.0.0.1";
|
|
bsc.pcap_fd = -1;
|
|
bsc.udp_reset_timeout = 180;
|
|
bsc.ping_time = 20;
|
|
bsc.pong_time = 5;
|
|
bsc.msc_time = 20;
|
|
bsc.forward_only = 1;
|
|
|
|
handle_options(argc, argv);
|
|
|
|
signal(SIGPIPE, SIG_IGN);
|
|
signal(SIGINT, sigint);
|
|
srand(time(NULL));
|
|
|
|
cell_vty_init();
|
|
if (vty_read_config_file(config, NULL) < 0) {
|
|
fprintf(stderr, "Failed to read the VTY config.\n");
|
|
return -1;
|
|
}
|
|
|
|
rc = telnet_init(NULL, NULL, 4242);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (inject_init(&bsc) != 0) {
|
|
LOGP(DINP, LOGL_NOTICE, "Failed to initialize inject interface.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (link_init(&bsc) != 0)
|
|
return -1;
|
|
|
|
bsc.m2ua_set = mtp_link_set_alloc();
|
|
bsc.m2ua_set->dpc = 92;
|
|
bsc.m2ua_set->opc = 9;
|
|
bsc.m2ua_set->sccp_opc = 9;
|
|
bsc.m2ua_set->isup_opc = 9;
|
|
bsc.m2ua_set->ni = 3;
|
|
bsc.m2ua_set->bsc = &bsc;
|
|
bsc.m2ua_set->pcap_fd = bsc.pcap_fd;
|
|
bsc.m2ua_set->name = talloc_strdup(bsc.m2ua_set, "M2UA");
|
|
|
|
/* for both links we want to have all isup messages */
|
|
if (bsc.isup_pass) {
|
|
LOGP(DINP, LOGL_NOTICE, "Going to pass through all ISUP messages.\n");
|
|
bsc.m2ua_set->pass_all_isup = 1;
|
|
bsc.link_set->pass_all_isup = 1;
|
|
}
|
|
|
|
lnk = sctp_m2ua_transp_create("0.0.0.0", 2904);
|
|
lnk->base.pcap_fd = -1;
|
|
mtp_link_set_add_link(bsc.m2ua_set, (struct mtp_link *) lnk);
|
|
|
|
llist_for_each_entry(data, &bsc.m2ua_set->links, entry)
|
|
data->start(data);
|
|
|
|
while (1) {
|
|
bsc_select_main(0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* dummy for links */
|
|
int msc_init(struct bsc_data *data, int dummy)
|
|
{
|
|
return 0;
|
|
}
|
|
|