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annotate sip-out/disconnect.c @ 235:bd493b21f215

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libnumdb2: port check_nanp.c
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 14 Aug 2023 13:57:10 -0800
parents e54b0a9e322f
children
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1 /*
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2 * In this module we implement call disconnection and clearing procedures.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/socket.h>
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7 #include <sys/time.h>
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8 #include <netinet/in.h>
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9 #include <stdio.h>
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10 #include <stdint.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include <syslog.h>
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15 #include "../include/mncc.h"
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16 #include "../include/gsm48_const.h"
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17 #include "../include/out_routes.h"
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18 #include "call.h"
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19
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20 extern unsigned sip_linger_timeout;
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21
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22 void
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23 disconnect_mncc(call, cause_loc, cause_val)
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24 struct call *call;
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25 {
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26 struct gsm_mncc msg;
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27
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28 if (!call->mncc)
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29 return;
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30 switch (call->mncc_state) {
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31 case MNCC_STATE_DISCONNECT:
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32 case MNCC_STATE_RELEASE:
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33 return;
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34 }
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35 bzero(&msg, sizeof(struct gsm_mncc));
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36 msg.msg_type = MNCC_DISC_REQ;
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37 msg.callref = call->mncc_callref;
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38 mncc_set_cause(&msg, cause_loc, cause_val);
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39 send_mncc_to_sock(call->mncc, &msg, sizeof(struct gsm_mncc));
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40 call->mncc_state = MNCC_STATE_DISCONNECT;
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41 }
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42
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43 void
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44 disconnect_tmgw(call)
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45 struct call *call;
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46 {
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47 switch (call->mgw_state) {
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48 case MGW_STATE_NO_EXIST:
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49 case MGW_STATE_DELETING:
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50 case MGW_STATE_MDCX_IBT:
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51 case MGW_STATE_MDCX_CONN:
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52 case MGW_STATE_MDCX_HOLD:
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53 case MGW_STATE_MDCX_RETR:
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54 case MGW_STATE_DTMF_OP:
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55 return;
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56 case MGW_STATE_ALLOCATED:
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57 case MGW_STATE_IBT_CONN:
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58 case MGW_STATE_COMPLETE:
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59 case MGW_STATE_HELD:
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60 tmgw_send_dlcx(call);
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61 return;
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62 default:
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63 syslog(LOG_CRIT,
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64 "FATAL: invalid MGW state 0x%x in disconnect_tmgw()",
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65 call->mgw_state);
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66 exit(1);
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67 }
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68 }
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69
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70 void
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71 disconnect_sip(call)
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72 struct call *call;
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73 {
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74 if (!call->sip_call_exists)
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75 return;
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76 switch (call->sip_state) {
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77 case SIP_STATE_INV_SENT:
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78 call->sip_state = SIP_STATE_ACCEPT_100;
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79 sip_mark_end_time(call, sip_linger_timeout);
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80 break;
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81 case SIP_STATE_100_RCVD:
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82 initiate_sip_cancel(call);
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83 break;
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84 case SIP_STATE_CONNECTED:
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85 initiate_bye(call);
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86 break;
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87 }
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88 }