FreeCalypso > hg > osmo-playpen
view smsc-daemon/gsup_rx.c @ 16:33129d7df7e4
README: update for current status
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 27 Aug 2023 22:01:45 -0800 |
parents | 81386a48c463 |
children |
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/* * This C module is part of proto-smsc-daemon concoction, a prototype/test * implementation of a GSUP-based GSM SMSC. It is based on the osmo-euse-demo * program from OsmoHLR package. * * proto-smsc-daemon author: Mychaela N. Falconia <falcon@freecalypso.org>, * no copyright. * * osmo-euse-demo author: Harald Welte <laforge@gnumonks.org>, (C) 2018, AGPL3+ */ #include <ctype.h> #include <string.h> #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <signal.h> #include <osmocom/core/msgb.h> #include <osmocom/core/select.h> #include <osmocom/core/application.h> #include <osmocom/core/utils.h> #include <osmocom/core/logging.h> #include <osmocom/gsm/gsup.h> #include <osmocom/gsupclient/gsup_client.h> #include "logging.h" extern void record_mo_sm(struct osmo_gsup_message *gmsg); extern char smsc_ipa_name[]; static void send_gsup_response(struct osmo_gsup_client *gsupc, struct osmo_gsup_message *orig_msg) { struct osmo_gsup_message resp = {0}; struct msgb *resp_msg; resp.message_type = OSMO_GSUP_TO_MSGT_RESULT(orig_msg->message_type); OSMO_STRLCPY_ARRAY(resp.imsi, orig_msg->imsi); resp.message_class = OSMO_GSUP_MESSAGE_CLASS_SMS; resp.sm_rp_mr = orig_msg->sm_rp_mr; resp.source_name = smsc_ipa_name; resp.source_name_len = strlen(smsc_ipa_name) + 1; resp.destination_name = orig_msg->source_name; resp.destination_name_len = orig_msg->source_name_len; resp_msg = osmo_gsup_client_msgb_alloc(); OSMO_ASSERT(resp_msg); osmo_gsup_encode(resp_msg, &resp); osmo_gsup_client_send(gsupc, resp_msg); } static void handle_mo_forward_sm(struct osmo_gsup_client *gsupc, struct osmo_gsup_message *gmsg) { if (!gmsg->sm_rp_mr) { LOGP(DMAIN, LOGL_ERROR, "error in MO-FORWARD-SM: missing SM-RP-MR\n"); return; } if (!gmsg->sm_rp_da_type) { LOGP(DMAIN, LOGL_ERROR, "error in MO-FORWARD-SM: missing SM-RP-DA\n"); return; } if (!gmsg->sm_rp_oa_type) { LOGP(DMAIN, LOGL_ERROR, "error in MO-FORWARD-SM: missing SM-RP-OA\n"); return; } if (!gmsg->sm_rp_ui) { LOGP(DMAIN, LOGL_ERROR, "error in MO-FORWARD-SM: missing SM-RP-UI\n"); return; } record_mo_sm(gmsg); send_gsup_response(gsupc, gmsg); } static void handle_ready_for_sm(struct osmo_gsup_client *gsupc, struct osmo_gsup_message *gmsg) { if (!gmsg->sm_rp_mr) { LOGP(DMAIN, LOGL_ERROR, "error in READY-FOR-SM: missing SM-RP-MR\n"); return; } send_gsup_response(gsupc, gmsg); } int gsupc_read_cb(struct osmo_gsup_client *gsupc, struct msgb *msg) { struct osmo_gsup_message gsup_msg = {0}; int rc; rc = osmo_gsup_decode(msgb_l2(msg), msgb_l2len(msg), &gsup_msg); if (rc < 0) { LOGP(DMAIN, LOGL_ERROR, "Error decoding GSUP: %s\n", msgb_hexdump(msg)); return rc; } DEBUGP(DMAIN, "Rx GSUP %s: %s\n", osmo_gsup_message_type_name(gsup_msg.message_type), msgb_hexdump(msg)); switch (gsup_msg.message_type) { case OSMO_GSUP_MSGT_MO_FORWARD_SM_REQUEST: handle_mo_forward_sm(gsupc, &gsup_msg); break; case OSMO_GSUP_MSGT_READY_FOR_SM_REQUEST: handle_ready_for_sm(gsupc, &gsup_msg); break; default: LOGP(DMAIN, LOGL_ERROR, "Unhandled GSUP message type %s\n", osmo_gsup_message_type_name(gsup_msg.message_type)); break; } msgb_free(msg); return 0; }