FreeCalypso > hg > themwi-system-sw
annotate sip-in/bye_in.c @ 216:6aa2cd650943
tcpserv-dump: specify bind IP on the command line
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 24 Jul 2023 22:19:08 -0800 |
parents | c1c94b7fc2e2 |
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rev | line source |
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1 /* |
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2 * Here we implement our handling of incoming SIP BYE requests. |
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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/gsm48_const.h" |
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16 #include "../libsip/parse.h" |
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17 #include "../libsip/uas_basic.h" |
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18 #include "../libsip/out_msg.h" |
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19 #include "call.h" |
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20 |
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21 extern struct call *find_call_by_sip_id(); |
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22 |
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23 extern unsigned sip_linger_gotbye; |
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24 extern unsigned sip_linger_error; |
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25 |
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26 void |
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27 handle_sip_bye(req, ess, sin) |
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28 struct sip_pkt_rx *req; |
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29 struct uas_parse_hdrs *ess; |
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30 struct sockaddr_in *sin; |
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31 { |
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32 struct call *call; |
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33 struct sip_msg_out resp; |
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34 char cseq_str[32]; |
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35 int rc; |
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36 |
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37 call = find_call_by_sip_id(ess->call_id); |
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38 if (!call) { |
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39 start_response_out_msg(&resp, "481 Call-ID not found"); |
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40 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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41 if (rc < 0) |
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42 return; |
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43 out_msg_finish(&resp); |
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44 sip_tx_packet(&resp, sin); |
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45 return; |
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46 } |
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47 switch (call->sip_state) { |
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48 case SIP_STATE_INVITE_PROC: |
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49 case SIP_STATE_RINGING: |
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50 case SIP_STATE_RINGING_REL: |
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51 call->overall_state = OVERALL_STATE_TEARDOWN; |
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52 disconnect_mncc(call, GSM48_CAUSE_LOC_NET_BEYOND, |
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53 GSM48_CC_CAUSE_NORM_CALL_CLEAR); |
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54 disconnect_tmgw(call); |
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55 strcpy(call->invite_fail, "487 Call attempt terminated"); |
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56 signal_invite_error(call); |
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57 break; |
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58 case SIP_STATE_INVITE_200: |
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59 case SIP_STATE_CONNECTED: |
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60 call->overall_state = OVERALL_STATE_TEARDOWN; |
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61 disconnect_mncc(call, GSM48_CAUSE_LOC_NET_BEYOND, |
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62 GSM48_CC_CAUSE_NORM_CALL_CLEAR); |
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63 disconnect_tmgw(call); |
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64 call->sip_state = SIP_STATE_ENDED; |
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65 sip_mark_end_time(call, sip_linger_gotbye); |
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66 break; |
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67 case SIP_STATE_BYE_SENT: |
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68 call->sip_state = SIP_STATE_ENDED; |
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69 sip_mark_end_time(call, sip_linger_gotbye); |
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70 transition_dead_sip(call); |
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71 break; |
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72 case SIP_STATE_INVITE_ERR: |
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73 case SIP_STATE_ENDED: |
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74 break; |
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75 case SIP_STATE_MSG_SIZE_ERR: |
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76 return; |
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77 } |
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78 /* send 200 response to BYE */ |
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79 start_response_out_msg(&resp, "200 OK"); |
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80 rc = out_msg_add_header(&resp, "From", call->invite_from); |
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81 if (rc < 0) { |
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82 msg_size_err: syslog(LOG_ERR, "BYE 200 response length exceeded"); |
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83 call->sip_state = SIP_STATE_MSG_SIZE_ERR; |
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84 sip_mark_end_time(call, sip_linger_error); |
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85 return; |
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86 } |
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87 rc = out_msg_add_header(&resp, "To", call->invite_to); |
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88 if (rc < 0) |
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89 goto msg_size_err; |
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90 rc = out_msg_add_header(&resp, "Call-ID", call->sip_call_id); |
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91 if (rc < 0) |
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92 goto msg_size_err; |
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93 sprintf(cseq_str, "%u BYE", ess->cseq_num); |
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94 rc = out_msg_add_header(&resp, "CSeq", cseq_str); |
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95 if (rc < 0) |
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96 goto msg_size_err; |
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97 rc = out_msg_add_header(&resp, "Via", ess->via); |
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98 if (rc < 0) |
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99 goto msg_size_err; |
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100 out_msg_finish(&resp); |
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101 sip_tx_packet(&resp, sin); |
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102 } |