FreeCalypso > hg > themwi-system-sw
annotate sip-out/reinvite.c @ 262:f1c024b2b835
smpp-trx-sa/log.c: additional cleanup
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 11 Oct 2023 21:21:34 -0800 |
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1 /* |
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2 * Here we handle incoming INVITE requests in the UAS role: even though |
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3 * we are strictly outbound, BulkVS servers will send us periodic |
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4 * re-INVITEs as keepalives, and we have to play along. |
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5 */ |
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6 |
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7 #include <sys/types.h> |
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8 #include <sys/socket.h> |
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9 #include <sys/time.h> |
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10 #include <netinet/in.h> |
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11 #include <stdio.h> |
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12 #include <stdint.h> |
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13 #include <stdlib.h> |
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14 #include <string.h> |
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15 #include <strings.h> |
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16 #include <syslog.h> |
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17 #include "../include/out_routes.h" |
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18 #include "../libsip/parse.h" |
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19 #include "../libsip/uas_basic.h" |
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20 #include "../libsip/out_msg.h" |
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21 #include "call.h" |
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22 |
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23 extern struct call *find_call_by_sip_id(); |
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24 |
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25 static void |
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26 invite_found_call(req, ess, sin, call) |
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27 struct sip_pkt_rx *req; |
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28 struct uas_parse_hdrs *ess; |
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29 struct sockaddr_in *sin; |
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30 struct call *call; |
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31 { |
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32 struct sip_msg_out resp; |
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33 int rc; |
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34 |
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35 switch (call->sip_state) { |
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36 case SIP_STATE_INV_SENT: |
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37 case SIP_STATE_100_RCVD: |
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38 start_response_out_msg(&resp, "491 Outbound INVITE pending"); |
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39 break; |
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40 case SIP_STATE_CONNECTED: |
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41 start_response_out_msg(&resp, "200 OK"); |
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42 break; |
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43 case SIP_STATE_CANCEL_SENT: |
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44 case SIP_STATE_BYE_SENT: |
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45 case SIP_STATE_ACCEPT_100: |
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46 case SIP_STATE_ACCEPT_200: |
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47 case SIP_STATE_ENDED: |
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48 start_response_out_msg(&resp, "488 Call terminated"); |
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49 break; |
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50 case SIP_STATE_MSG_SIZE_ERR: |
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51 return; |
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52 default: |
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53 syslog(LOG_CRIT, |
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54 "FATAL: invalid SIP state 0x%x on incoming re-INVITE", |
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55 call->sip_state); |
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56 exit(1); |
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57 } |
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58 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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59 if (rc < 0) { |
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60 syslog(LOG_ERR, "Re-INVITE response message size error"); |
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61 return; |
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62 } |
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63 out_msg_finish(&resp); |
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64 sip_tx_packet(&resp, sin); |
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65 } |
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66 |
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67 static void |
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68 invite_unknown_call(req, ess, sin) |
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69 struct sip_pkt_rx *req; |
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70 struct uas_parse_hdrs *ess; |
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71 struct sockaddr_in *sin; |
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72 { |
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73 struct sip_msg_out resp; |
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74 int rc; |
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75 |
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76 start_response_out_msg(&resp, "405 This gateway is outbound only"); |
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77 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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78 if (rc < 0) |
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79 return; |
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80 out_msg_finish(&resp); |
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81 sip_tx_packet(&resp, sin); |
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82 } |
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83 |
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84 void |
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85 handle_invite_req(req, ess, sin) |
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86 struct sip_pkt_rx *req; |
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87 struct uas_parse_hdrs *ess; |
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88 struct sockaddr_in *sin; |
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89 { |
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90 struct call *call; |
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91 |
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92 call = find_call_by_sip_id(ess->call_id); |
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93 if (call) |
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94 invite_found_call(req, ess, sin, call); |
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95 else |
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96 invite_unknown_call(req, ess, sin); |
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97 } |