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#include <osmocom/core/msgb.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/gsm/gsup.h>
#include "db.h"
#include "logging.h"
#include "gsup_server.h"
#include "rand.h"
static struct db_context *g_dbc;
/* process an incoming SAI request */
static int rx_send_auth_info(struct osmo_gsup_conn *conn,
const struct osmo_gsup_message *gsup)
{
struct osmo_gsup_message gsup_out;
struct msgb *msg_out;
int rc;
/* initialize return message structure */
memset(&gsup_out, 0, sizeof(gsup_out));
gsup_out.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT;
memcpy(&gsup_out.imsi, &gsup->imsi, sizeof(gsup_out.imsi));
rc = db_get_auc(g_dbc, gsup->imsi, gsup_out.auth_vectors,
ARRAY_SIZE(gsup_out.auth_vectors),
NULL /* gsup->rand_auts */, gsup->auts);
if (rc <= 0) {
gsup_out.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR;
}
msg_out = msgb_alloc(1024, "GSUP response");
osmo_gsup_encode(msg_out, &gsup_out);
return osmo_gsup_conn_send(conn, msg_out);
}
static int read_cb(struct osmo_gsup_conn *conn, struct msgb *msg)
{
static struct osmo_gsup_message gsup;
int rc;
rc = osmo_gsup_decode(msgb_l3(msg), msgb_l3len(msg), &gsup);
if (rc < 0) {
LOGP(DMAIN, LOGL_ERROR, "error in GSUP decode: %d\n", rc);
return rc;
}
switch (gsup.message_type) {
/* requests sent to us */
case OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST:
rx_send_auth_info(conn, &gsup);
break;
case OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST:
break;
/* responses to requests sent by us */
case OSMO_GSUP_MSGT_INSERT_DATA_ERROR:
break;
case OSMO_GSUP_MSGT_INSERT_DATA_RESULT:
break;
default:
LOGP(DMAIN, LOGL_DEBUG, "Unhandled GSUP message type %u\n",
gsup.message_type);
break;
}
return 0;
}
int main(int argc, char **argv)
{
struct osmo_gsup_server *gs;
int rc;
rc = osmo_init_logging(&hlr_log_info);
if (rc < 0) {
fprintf(stderr, "Error initializing logging\n");
exit(1);
}
LOGP(DMAIN, LOGL_NOTICE, "hlr starting\n");
rc = rand_init();
if (rc < 0) {
LOGP(DMAIN, LOGL_FATAL, "Error initializing random source\n");
exit(1);
}
g_dbc = db_open(NULL, "hlr.db");
if (!g_dbc) {
LOGP(DMAIN, LOGL_FATAL, "Error opening database\n");
exit(1);
}
gs = osmo_gsup_server_create(NULL, NULL, 2222, read_cb);
if (!gs) {
LOGP(DMAIN, LOGL_FATAL, "Error starting GSUP server\n");
exit(1);
}
while (1) {
osmo_select_main(0);
}
db_close(g_dbc);
log_fini();
exit(0);
}
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