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#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/sctp.h>
#include <osmocom/core/application.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/select.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/msgb.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include "hnbgw.h"
#include "hnbgw_hnbap.h"
static void *tall_hnb_ctx;
struct hnb_gw g_hnb_gw = {
.config = {
.iuh_listen_port = IUH_DEFAULT_SCTP_PORT,
},
};
static int hnb_socket_cb(struct osmo_fd *fd, unsigned int what)
{
struct hnb_context *hnb = fd->data;
struct sctp_sndrcvinfo sinfo;
struct msgb *msg = msgb_alloc(IUH_MSGB_SIZE, "Iuh rx");
int flags;
int rc;
if (!msg)
return -ENOMEM;
rc = sctp_recvmsg(fd->fd, msgb_data(msg), msgb_tailroom(msg),
NULL, NULL, &sinfo, &flags);
if (rc < 0) {
LOGP(DMAIN, LOGL_ERROR, "Error during sctp_recvmsg()\n");
/* FIXME: clean up after disappeared HNB */
return rc;
} else
msgb_put(msg, rc);
switch (sinfo.sinfo_ppid) {
case IUH_PPI_HNBAP:
rc = hnbgw_hnbap_rx(hnb, msg);
break;
case IUH_PPI_RUA:
//rc = hnbgw_rua_rx(hnb, msg);
break;
case IUH_PPI_SABP:
case IUH_PPI_RNA:
case IUH_PPI_PUA:
LOGP(DMAIN, LOGL_ERROR, "Unimplemented SCTP PPID=%u received\n",
sinfo.sinfo_ppid);
rc = 0;
break;
default:
LOGP(DMAIN, LOGL_ERROR, "Unknown SCTP PPID=%u received\n",
sinfo.sinfo_ppid);
rc = 0;
break;
}
return rc;
}
/*! call-back when the listen FD has something to read */
static int listen_fd_cb(struct osmo_fd *fd, unsigned int what)
{
struct hnb_gw *gw = fd->data;
struct hnb_context *ctx;
struct sockaddr_storage sockaddr;
socklen_t len = sizeof(sockaddr);
int new_fd = accept(fd->fd, (struct sockaddr *)&sockaddr, &len);
if (new_fd < 0) {
LOGP(DMAIN, LOGL_ERROR, "Iuh accept() failed\n");
return new_fd;
}
LOGP(DMAIN, LOGL_INFO, "SCTP Connection accept()ed\n");
ctx = talloc_zero(tall_hnb_ctx, struct hnb_context);
if (!ctx)
return -ENOMEM;
ctx->gw = gw;
ctx->socket.data = ctx;
ctx->socket.fd = new_fd;
ctx->socket.when = BSC_FD_READ;
ctx->socket.cb = hnb_socket_cb;
osmo_fd_register(&ctx->socket);
llist_add_tail(&ctx->list, &gw->hnb_list);
return 0;
}
static const struct log_info_cat log_cat[] = {
[DMAIN] = {
.name = "DMAIN", .loglevel = LOGL_DEBUG, .enabled = 1,
.color = "",
.description = "Main program",
},
};
static const struct log_info hnbgw_log_info = {
.cat = log_cat,
.num_cat = ARRAY_SIZE(log_cat),
};
static struct vty_app_info vty_info = {
.name = "OsmoHNBGW",
.version = "0",
};
static int daemonize = 0;
int main(int argc, char **argv)
{
int rc;
tall_hnb_ctx = talloc_named_const(NULL, 0, "hnb_context");
g_hnb_gw.listen_fd.cb = listen_fd_cb;
g_hnb_gw.listen_fd.when = BSC_FD_READ;
g_hnb_gw.listen_fd.data = &g_hnb_gw;
rc = osmo_init_logging(&hnbgw_log_info);
if (rc < 0)
exit(1);
vty_init(&vty_info);
rc = telnet_init(NULL, &g_hnb_gw, 2323);
if (rc < 0) {
perror("Error binding VTY port");
exit(1);
}
rc = osmo_sock_init_ofd(&g_hnb_gw.listen_fd, AF_INET, SOCK_STREAM,
IPPROTO_SCTP, "127.0.0.1",
g_hnb_gw.config.iuh_listen_port, OSMO_SOCK_F_BIND);
if (rc < 0) {
perror("Error binding Iuh port");
exit(1);
}
if (daemonize) {
rc = osmo_daemonize();
if (rc < 0) {
perror("Error during daemonize");
exit(1);
}
}
while (1) {
rc = osmo_select_main(0);
if (rc < 0)
exit(3);
}
/* not reached */
exit(0);
}
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