FreeCalypso > hg > themwi-system-sw
view sip-in/bye_in.c @ 84:f82157ac7303
sip-in: handle MNCC_RTP_CREATE
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 20 Sep 2022 22:44:44 -0800 |
parents | a9944b66dcc5 |
children | 0d6435808bcd |
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/* * Here we implement our handling of incoming SIP BYE requests. */ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <syslog.h> #include "../include/gsm48_const.h" #include "../libsip/parse.h" #include "../libsip/uas_basic.h" #include "../libsip/out_msg.h" #include "call.h" extern struct call *find_call_by_sip_id(); void handle_sip_bye(req, ess, sin) struct sip_pkt_rx *req; struct uas_parse_hdrs *ess; struct sockaddr_in *sin; { struct call *call; struct sip_msg_out resp; char cseq_str[32]; int rc; call = find_call_by_sip_id(ess->call_id); if (!call) { start_response_out_msg(&resp, "481 Call-ID not found"); rc = add_resp_basic_headers(&resp, ess, req->req_method); if (rc < 0) return; out_msg_finish(&resp); sip_tx_packet(&resp, sin); return; } switch (call->sip_state) { case SIP_STATE_INVITE_PROC: case SIP_STATE_RINGING: case SIP_STATE_RINGING_PRACK: call->overall_state = OVERALL_STATE_TEARDOWN; disconnect_mncc(call, GSM48_CAUSE_LOC_NET_BEYOND, GSM48_CC_CAUSE_NORM_CALL_CLEAR); disconnect_tmgw(call); strcpy(call->invite_fail, "487 Call attempt terminated"); signal_invite_error(call); break; case SIP_STATE_INVITE_200: case SIP_STATE_CONNECTED: call->overall_state = OVERALL_STATE_TEARDOWN; disconnect_mncc(call, GSM48_CAUSE_LOC_NET_BEYOND, GSM48_CC_CAUSE_NORM_CALL_CLEAR); disconnect_tmgw(call); call->sip_state = SIP_STATE_ENDED; break; case SIP_STATE_BYE_SENT: call->sip_state = SIP_STATE_ENDED; break; case SIP_STATE_INVITE_ERR: case SIP_STATE_ENDED: break; case SIP_STATE_MSG_SIZE_ERR: return; } /* send 200 response to BYE */ start_response_out_msg(&resp, "200 OK"); rc = out_msg_add_header(&resp, "From", call->invite_from); if (rc < 0) { msg_size_err: syslog(LOG_ERR, "BYE 200 response length exceeded"); call->sip_state = SIP_STATE_MSG_SIZE_ERR; return; } rc = out_msg_add_header(&resp, "To", call->invite_to); if (rc < 0) goto msg_size_err; rc = out_msg_add_header(&resp, "Call-ID", call->sip_call_id); if (rc < 0) goto msg_size_err; sprintf(cseq_str, "%u BYE", ess->cseq_num); rc = out_msg_add_header(&resp, "CSeq", cseq_str); if (rc < 0) goto msg_size_err; rc = out_msg_add_header(&resp, "Via", ess->via); if (rc < 0) goto msg_size_err; out_msg_finish(&resp); sip_tx_packet(&resp, sin); }