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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <ctype.h>
#include <osmocom/core/select.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/core/fsm.h>
#include <osmocom/vty/vty.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/sigtran/osmo_ss7.h>
#include <osmocom/sigtran/sccp_sap.h>
#include <osmocom/sigtran/sccp_helpers.h>
#include <osmocom/sigtran/protocol/sua.h>
#include <osmocom/sigtran/protocol/m3ua.h>
#include "internal.h"
static struct osmo_sccp_instance *g_sccp;
static struct osmo_sccp_instance *sua_server_helper(int local_port, const char *local_address, int local_pc,
int remote_port, const char *remote_address, int remote_pc)
{
struct osmo_sccp_instance *sccp;
sccp = osmo_sccp_simple_server(NULL, local_pc, OSMO_SS7_ASP_PROT_M3UA, local_port, local_address);
if (sccp == NULL)
return NULL;
osmo_sccp_simple_server_add_clnt(sccp, OSMO_SS7_ASP_PROT_M3UA, "client", remote_pc, local_port,
remote_port, remote_address);
return sccp;
}
/***********************************************************************
* Initialization
***********************************************************************/
static void signal_handler(int signal)
{
fprintf(stdout, "signal %d received\n", signal);
switch (signal) {
case SIGUSR1:
talloc_report_full(osmo_sccp_get_ss7(g_sccp), stderr);
break;
case SIGUSR2:
talloc_report_full(NULL, stderr);
break;
}
}
static const struct log_info_cat log_info_cat[] = {
};
static const struct log_info log_info = {
.cat = log_info_cat,
.num_cat = ARRAY_SIZE(log_info_cat),
};
static void init_logging(void)
{
const int log_cats[] = { DLSS7, DLSUA, DLM3UA, DLSCCP, DLINP };
unsigned int i;
void *tall_ctx = talloc_named_const(NULL, 1, "example");
msgb_talloc_ctx_init(tall_ctx, 0);
osmo_init_logging2(tall_ctx, &log_info);
for (i = 0; i < ARRAY_SIZE(log_cats); i++)
log_set_category_filter(osmo_stderr_target, log_cats[i], 1, LOGL_DEBUG);
}
static struct vty_app_info vty_info = {
.name = "sccp-demo-user",
.version = 0,
};
#define DEFAULT_LOCAL_ADDRESS_SERVER "127.0.0.1"
#define DEFAULT_LOCAL_ADDRESS_CLIENT "127.0.0.2"
#define DEFAULT_REMOTE_ADDRESS_CLIENT DEFAULT_LOCAL_ADDRESS_SERVER
#define DEFAULT_REMOTE_ADDRESS_SERVER DEFAULT_LOCAL_ADDRESS_CLIENT
#define DEFAULT_LOCAL_PORT_SERVER M3UA_PORT
#define DEFAULT_LOCAL_PORT_CLIENT M3UA_PORT
#define DEFAULT_REMOTE_PORT_CLIENT DEFAULT_LOCAL_PORT_SERVER
#define DEFAULT_REMOTE_PORT_SERVER DEFAULT_LOCAL_PORT_CLIENT
#define DEFAULT_REMOTE_PORT_SERVER_STR DEFAULT_LOCAL_PORT_CLIENT_STR
#define DEFAULT_PC_SERVER 1
#define DEFAULT_PC_CLIENT 23
static void usage(void) {
fprintf(stderr, "sccp_demo_user [-c] [-l LOCAL_ADDRESS[:LOCAL_PORT]]\n"
" [-r REMOTE_ADDRESS[:REMOTE_PORT]]\n"
" [-L LOCAL_POINT_CODE] [-R REMOTE_POINT_CODE]\n"
"Options:\n"
" -c: Run in client mode (default is server mode)\n"
" -l: local IP address and SCTP port (default is %s:%d in server mode,\n"
" %s:%d in client mode)\n"
" -r: remote IP address and SCTP port (default is %s:%d in server mode,\n"
" %s:%d in client mode)\n"
" -L: local point code (default is %d in server mode, %d in client mode)\n"
" -R: remote point code (default is %d in server mode, %d in client mode)\n",
DEFAULT_LOCAL_ADDRESS_SERVER, DEFAULT_LOCAL_PORT_SERVER,
DEFAULT_LOCAL_ADDRESS_CLIENT, DEFAULT_LOCAL_PORT_CLIENT,
DEFAULT_REMOTE_ADDRESS_SERVER, DEFAULT_REMOTE_PORT_SERVER,
DEFAULT_REMOTE_ADDRESS_CLIENT, DEFAULT_REMOTE_PORT_CLIENT,
DEFAULT_PC_SERVER, DEFAULT_PC_CLIENT,
DEFAULT_PC_CLIENT, DEFAULT_PC_SERVER);
exit(1);
}
static int is_decimal_string(const char *s)
{
const char *p = s;
if (*p == '\0')
return 0;
while (*p) {
if (!isdigit(*p++))
return 0;
}
return 1;
}
static int parse_address_port(char **address, int *port, const char *arg)
{
char *s, *colon;
s = strdup(arg);
OSMO_ASSERT(s);
colon = strrchr(s, ':');
if (colon) {
char *portstr = colon + 1;
*colon = '\0';
if (*portstr == '\0') {
fprintf(stderr, "missing port number after : in '%s'\n", arg);
free(s);
return 1;
}
if (!is_decimal_string(portstr)) {
fprintf(stderr, "invalid port number: '%s'\n", portstr);
free(s);
return 1;
}
*port = atoi(portstr);
}
*address = s;
return 0;
}
int main(int argc, char **argv)
{
bool client = false;
int rc, ch;
char *local_address = DEFAULT_LOCAL_ADDRESS_SERVER;
int local_port = DEFAULT_LOCAL_PORT_SERVER;
int local_pc = DEFAULT_PC_SERVER;
char *remote_address = DEFAULT_REMOTE_ADDRESS_SERVER;
int remote_port = DEFAULT_REMOTE_PORT_SERVER;
int remote_pc = DEFAULT_PC_CLIENT;
bool lflag = false, rflag = false, Lflag = false, Rflag = false;
while ((ch = getopt(argc, argv, "cl:r:L:R:")) != -1) {
switch (ch) {
case 'c':
client = true;
/* Set client-mode defaults unless already overridden during option parsing. */
if (!lflag) {
local_address = DEFAULT_LOCAL_ADDRESS_CLIENT;
local_port = DEFAULT_LOCAL_PORT_CLIENT;
}
if (!Lflag)
local_pc = DEFAULT_PC_CLIENT;
if (!rflag) {
remote_address = DEFAULT_REMOTE_ADDRESS_CLIENT;
remote_port = DEFAULT_REMOTE_PORT_CLIENT;
}
if (!Rflag)
remote_pc = DEFAULT_PC_SERVER;
break;
case 'l':
if (parse_address_port(&local_address, &local_port, optarg))
exit(1);
lflag = true;
break;
case 'r':
if (parse_address_port(&remote_address, &remote_port, optarg))
exit(1);
rflag = true;
break;
case 'L':
if (!is_decimal_string(optarg)) {
fprintf(stderr, "invalid decimal point code: '%s'\n", optarg);
exit(1);
}
local_pc = atoi(optarg);
Lflag = true;
break;
case 'R':
if (!is_decimal_string(optarg)) {
fprintf(stderr, "invalid decimal point code: '%s'\n", optarg);
exit(1);
}
remote_pc = atoi(optarg);
Rflag = true;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
talloc_enable_leak_report_full();
signal(SIGUSR1, &signal_handler);
signal(SIGUSR2, &signal_handler);
init_logging();
OSMO_ASSERT(osmo_ss7_init() == 0);
osmo_fsm_log_addr(false);
vty_init(&vty_info);
osmo_ss7_vty_init_asp(NULL);
osmo_sccp_vty_init();
rc = telnet_init_dynif(NULL, NULL, vty_get_bind_addr(), 2324+client);
if (rc < 0) {
perror("Error binding VTY port");
exit(1);
}
if (client) {
g_sccp = osmo_sccp_simple_client(NULL, "client", local_pc, OSMO_SS7_ASP_PROT_M3UA,
local_port, local_address, remote_port, remote_address);
if (g_sccp == NULL) {
perror("Could not create SCCP client");
exit (1);
}
sccp_test_user_vty_install(g_sccp, OSMO_SCCP_SSN_BSSAP);
} else {
g_sccp = sua_server_helper(local_port, local_address, local_pc,
remote_port, remote_address, remote_pc);
if (g_sccp == NULL) {
perror("Could not create SCCP server");
exit(1);
}
sccp_test_server_init(g_sccp);
}
while (1) {
osmo_select_main(0);
}
}
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