FreeCalypso > hg > themwi-system-sw
annotate sip-out/invite.c @ 217:9f6a148ceb25
tcpserv-dump: brown paper bag
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 24 Jul 2023 22:33:01 -0800 |
parents | bfa9f0c0f0ac |
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rev | line source |
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156
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1 /* |
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2 * In this module we handle responses to INVITE. |
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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 "../include/out_routes.h" |
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17 #include "../libsip/parse.h" |
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18 #include "../libsip/sdp.h" |
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19 #include "../libsip/out_msg.h" |
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20 #include "call.h" |
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21 |
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22 extern char *get_single_header(); |
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23 extern char *extract_to_tag(); |
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24 |
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25 extern unsigned sip_linger_invite_err; |
156
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26 extern unsigned sip_linger_response_err; |
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27 |
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28 static |
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29 check_sdp_present(msg) |
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30 struct sip_pkt_rx *msg; |
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31 { |
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32 char *hval; |
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33 |
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34 if (!msg->msg_body_len) |
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35 return 0; |
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36 hval = get_single_header(msg, "Content-Type", "c", (int *) 0); |
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37 if (!hval) |
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38 return 0; |
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39 if (!strcasecmp(hval, "application/sdp")) |
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40 return 1; |
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41 else |
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42 return 0; |
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43 } |
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44 |
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45 static |
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46 extract_sdp(call, msg) |
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47 struct call *call; |
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48 struct sip_pkt_rx *msg; |
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49 { |
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50 struct sdp_parse sdp_parse; |
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51 int rc, use_pcma; |
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52 |
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53 rc = parse_incoming_sdp(msg->msg_body, msg->msg_body_len, &sdp_parse); |
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54 if (rc < 0) |
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55 return rc; |
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56 switch (sdp_parse.codec_mask) { |
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57 case SDP_CODEC_MASK_PCMU: |
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58 case SDP_CODEC_MASK_BOTH: |
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59 use_pcma = 0; |
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60 break; |
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61 case SDP_CODEC_MASK_PCMA: |
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62 case SDP_CODEC_MASK_BOTH | SDP_CODEC_MASK_PCMA_PREF: |
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63 use_pcma = 1; |
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64 break; |
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65 default: |
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66 return -2; |
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67 } |
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68 call->pstn_rtp_remote.sin_family = AF_INET; |
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69 call->pstn_rtp_remote.sin_addr = sdp_parse.ip_addr; |
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70 call->pstn_rtp_remote.sin_port = htons(sdp_parse.audio_port); |
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71 call->use_pcma = use_pcma; |
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72 return 0; |
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73 } |
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74 |
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75 static void |
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76 handle_1xx(call, msg, tag, sin) |
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77 struct call *call; |
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78 struct sip_pkt_rx *msg; |
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79 char *tag; |
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80 struct sockaddr_in *sin; |
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81 { |
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82 int rc; |
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83 |
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84 switch (call->sip_state) { |
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85 case SIP_STATE_INV_SENT: |
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86 call->sip_state = SIP_STATE_100_RCVD; |
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87 /* FALL THRU */ |
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88 case SIP_STATE_100_RCVD: |
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89 if (msg->status_code == 180) |
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90 call->overall_state = OVERALL_STATE_RINGING; |
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91 if (check_sdp_present(msg) && |
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92 call->mgw_state == MGW_STATE_ALLOCATED) { |
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93 rc = extract_sdp(call, msg); |
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94 if (rc < 0) { |
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95 syslog(LOG_ERR, "bad SDP in %03u response", |
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96 msg->status_code); |
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97 call->overall_state = OVERALL_STATE_TEARDOWN; |
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98 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU, |
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99 GSM48_CC_CAUSE_BEARER_CA_UNAVAIL); |
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100 disconnect_tmgw(call); |
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101 initiate_sip_cancel(call); |
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102 return; |
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103 } |
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104 tmgw_send_mdcx_connect(call, 1); |
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105 } else if (msg->status_code == 180) |
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106 mncc_signal_alerting(call); |
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107 return; |
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108 case SIP_STATE_ACCEPT_100: |
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109 initiate_sip_cancel(call); |
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110 return; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
111 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
112 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
113 |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
114 static |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 send_ack(call, tag, sin) |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 struct call *call; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 char *tag; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 struct sockaddr_in *sin; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
119 { |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
120 struct sip_msg_out msg; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 int rc; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
123 rc = start_request_out_msg(&msg, "ACK", call->to_uri); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
124 if (rc < 0) |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
125 return rc; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
126 rc = add_req_boilerplate(&msg, call, "1 ACK", tag); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
127 if (rc < 0) |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
128 return rc; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
129 out_msg_finish(&msg); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
130 sip_tx_packet(&msg, sin); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
131 return 0; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
132 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
133 |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 static void |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
135 handle_200(call, msg, tag, sin) |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
136 struct call *call; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 struct sip_pkt_rx *msg; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 char *tag; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 struct sockaddr_in *sin; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
140 { |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 int rc; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 switch (call->sip_state) { |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 case SIP_STATE_INV_SENT: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 case SIP_STATE_100_RCVD: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
146 rc = send_ack(call, tag, sin); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 if (rc < 0) { |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
148 syslog(LOG_CRIT, |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
149 "ACK to %03u response exceeds msg size!", |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
150 msg->status_code); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
151 call->overall_state = OVERALL_STATE_TEARDOWN; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
152 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU, |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
153 GSM48_CC_CAUSE_DEST_OOO); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 disconnect_tmgw(call); |
163
bfa9f0c0f0ac
sip-out: handle incoming BYE as UAS
Mychaela Falconia <falcon@freecalypso.org>
parents:
158
diff
changeset
|
155 call->sip_state = SIP_STATE_MSG_SIZE_ERR; |
156
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
156 sip_mark_end_time(call, sip_linger_response_err); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
157 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
158 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 if (tag) |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 strcpy(call->to_tag, tag); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 call->sip_state = SIP_STATE_CONNECTED; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 if (!check_sdp_present(msg)) { |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 syslog(LOG_ERR, "error: %03u response has no SDP", |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 msg->status_code); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
165 call->overall_state = OVERALL_STATE_TEARDOWN; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU, |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 GSM48_CC_CAUSE_DEST_OOO); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 disconnect_tmgw(call); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 initiate_bye(call); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
172 rc = extract_sdp(call, msg); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 if (rc < 0) { |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 syslog(LOG_ERR, "bad SDP in %03u response", |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
175 msg->status_code); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
176 call->overall_state = OVERALL_STATE_TEARDOWN; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
177 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU, |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 GSM48_CC_CAUSE_BEARER_CA_UNAVAIL); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
179 disconnect_tmgw(call); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 initiate_bye(call); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 call->overall_state = OVERALL_STATE_CONNECTED; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 switch (call->mgw_state) { |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
185 case MGW_STATE_ALLOCATED: |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 case MGW_STATE_IBT_CONN: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 tmgw_send_mdcx_connect(call, 0); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 case MGW_STATE_MDCX_IBT: |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
190 return; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 default: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
192 syslog(LOG_CRIT, |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
193 "FATAL: invalid MGW state 0x%x on INVITE %03u response", |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
194 call->mgw_state, msg->status_code); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
195 exit(1); |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
196 } |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
197 case SIP_STATE_CONNECTED: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
198 case SIP_STATE_BYE_SENT: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
199 if (tag && call->to_tag[0] && strcmp(call->to_tag, tag)) { |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
200 syslog(LOG_ERR, |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
201 "received %u response with different To tag, ignoring", |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
202 msg->status_code); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
203 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
204 } |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
205 send_ack(call, call->to_tag, sin); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
206 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
207 case SIP_STATE_CANCEL_SENT: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
208 case SIP_STATE_ACCEPT_100: |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
209 case SIP_STATE_ACCEPT_200: |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
210 rc = send_ack(call, tag, sin); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
211 if (rc < 0) { |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
212 syslog(LOG_CRIT, |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
213 "ACK to %03u response exceeds msg size!", |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
214 msg->status_code); |
163
bfa9f0c0f0ac
sip-out: handle incoming BYE as UAS
Mychaela Falconia <falcon@freecalypso.org>
parents:
158
diff
changeset
|
215 call->sip_state = SIP_STATE_MSG_SIZE_ERR; |
156
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
216 sip_mark_end_time(call, sip_linger_response_err); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
217 return; |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
218 } |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
219 if (tag) |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
220 strcpy(call->to_tag, tag); |
0bacca1f2f7b
sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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221 initiate_bye(call); |
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222 return; |
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223 case SIP_STATE_ENDED: |
163
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224 case SIP_STATE_MSG_SIZE_ERR: |
156
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225 return; |
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226 default: |
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227 syslog(LOG_CRIT, |
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228 "FATAL: invalid SIP state 0x%x on INVITE %03u response", |
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229 call->sip_state, msg->status_code); |
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230 exit(1); |
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parents:
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|
231 } |
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232 } |
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233 |
158
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234 static int |
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235 sip_error_to_gsm_cause(sip_status_code) |
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236 unsigned sip_status_code; |
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237 { |
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238 /* mapping taken from osmo-sip-connector */ |
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239 switch (sip_status_code) { |
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240 case 400: |
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|
241 return GSM48_CC_CAUSE_TEMP_FAILURE; |
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242 case 401: |
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243 case 402: |
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244 case 403: |
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245 return GSM48_CC_CAUSE_CALL_REJECTED; |
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|
246 case 404: |
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247 return GSM48_CC_CAUSE_UNASSIGNED_NR; |
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248 case 405: |
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157
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249 return GSM48_CC_CAUSE_SERV_OPT_UNAVAIL; |
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|
250 case 406: |
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251 return GSM48_CC_CAUSE_CHAN_UNACCEPT; |
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|
252 case 407: |
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253 return GSM48_CC_CAUSE_CALL_REJECTED; |
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254 case 408: |
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255 return GSM48_CC_CAUSE_RECOVERY_TIMER; |
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256 case 410: |
51cf5ea7f320
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257 return GSM48_CC_CAUSE_NUMBER_CHANGED; |
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258 case 413: |
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259 case 414: |
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260 return GSM48_CC_CAUSE_INTERWORKING; |
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|
261 case 415: |
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262 return GSM48_CC_CAUSE_SERV_OPT_UNIMPL; |
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|
263 case 416: |
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|
264 return GSM48_CC_CAUSE_INVAL_TRANS_ID; |
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265 case 420: |
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|
266 case 421: |
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diff
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267 case 423: |
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diff
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|
268 return GSM48_CC_CAUSE_INTERWORKING; |
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diff
changeset
|
269 case 480: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
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157
diff
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270 return GSM48_CC_CAUSE_USER_NOTRESPOND; |
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157
diff
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|
271 case 481: |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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272 return GSM48_CC_CAUSE_TEMP_FAILURE; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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|
273 case 482: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
274 case 483: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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|
275 return GSM48_CC_CAUSE_PRE_EMPTION; |
51cf5ea7f320
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157
diff
changeset
|
276 case 484: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
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157
diff
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|
277 return GSM48_CC_CAUSE_INV_NR_FORMAT; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
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157
diff
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|
278 case 485: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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|
279 return GSM48_CC_CAUSE_NO_ROUTE; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
280 case 486: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
281 return GSM48_CC_CAUSE_USER_BUSY; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
282 case 488: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
283 return GSM48_CC_CAUSE_INCOMPAT_DEST; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
284 case 500: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
285 return GSM48_CC_CAUSE_TEMP_FAILURE; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
286 case 501: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
287 return GSM48_CC_CAUSE_SERV_OPT_UNIMPL; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
288 case 502: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
289 return GSM48_CC_CAUSE_DEST_OOO; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
290 case 503: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
291 return GSM48_CC_CAUSE_RESOURCE_UNAVAIL; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
292 case 504: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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|
293 return GSM48_CC_CAUSE_RECOVERY_TIMER; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
294 case 505: |
51cf5ea7f320
sip-out: map INVITE errors to GSM cause values
Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
295 case 513: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
296 return GSM48_CC_CAUSE_INTERWORKING; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
297 case 600: |
51cf5ea7f320
sip-out: map INVITE errors to GSM cause values
Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
298 return GSM48_CC_CAUSE_USER_BUSY; |
51cf5ea7f320
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parents:
157
diff
changeset
|
299 case 603: |
51cf5ea7f320
sip-out: map INVITE errors to GSM cause values
Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
300 return GSM48_CC_CAUSE_CALL_REJECTED; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
301 case 604: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
302 return GSM48_CC_CAUSE_NO_ROUTE; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
303 case 606: |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
changeset
|
304 return GSM48_CC_CAUSE_INCOMPAT_DEST; |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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|
305 default: |
51cf5ea7f320
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parents:
157
diff
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|
306 return GSM48_CC_CAUSE_NORMAL_UNSPEC; |
51cf5ea7f320
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parents:
157
diff
changeset
|
307 } |
51cf5ea7f320
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Mychaela Falconia <falcon@freecalypso.org>
parents:
157
diff
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|
308 } |
51cf5ea7f320
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parents:
157
diff
changeset
|
309 |
156
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
310 static void |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
311 handle_error(call, msg, tag, sin) |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
312 struct call *call; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
313 struct sip_pkt_rx *msg; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
314 char *tag; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
315 struct sockaddr_in *sin; |
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
316 { |
157
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
parents:
156
diff
changeset
|
317 int rc; |
156
0bacca1f2f7b
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
318 |
163
bfa9f0c0f0ac
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parents:
158
diff
changeset
|
319 if (call->sip_state == SIP_STATE_MSG_SIZE_ERR) |
bfa9f0c0f0ac
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parents:
158
diff
changeset
|
320 return; |
157
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Mychaela Falconia <falcon@freecalypso.org>
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156
diff
changeset
|
321 rc = send_ack(call, tag, sin); |
7643b779dbea
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156
diff
changeset
|
322 if (rc < 0) |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
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156
diff
changeset
|
323 syslog(LOG_CRIT, "ACK to %03u response exceeds msg size!", |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
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156
diff
changeset
|
324 msg->status_code); |
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Mychaela Falconia <falcon@freecalypso.org>
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156
diff
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|
325 switch (call->sip_state) { |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
parents:
156
diff
changeset
|
326 case SIP_STATE_INV_SENT: |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
parents:
156
diff
changeset
|
327 case SIP_STATE_100_RCVD: |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
parents:
156
diff
changeset
|
328 call->overall_state = OVERALL_STATE_TEARDOWN; |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
parents:
156
diff
changeset
|
329 disconnect_mncc(call, GSM48_CAUSE_LOC_NET_BEYOND, |
7643b779dbea
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Mychaela Falconia <falcon@freecalypso.org>
parents:
156
diff
changeset
|
330 sip_error_to_gsm_cause(msg->status_code)); |
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331 disconnect_tmgw(call); |
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332 call->sip_state = SIP_STATE_ENDED; |
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333 sip_mark_end_time(call, sip_linger_invite_err); |
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334 return; |
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335 case SIP_STATE_CANCEL_SENT: |
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336 case SIP_STATE_ACCEPT_100: |
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337 case SIP_STATE_ACCEPT_200: |
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338 call->sip_state = SIP_STATE_ENDED; |
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339 sip_mark_end_time(call, sip_linger_invite_err); |
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340 return; |
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341 case SIP_STATE_CONNECTED: |
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342 case SIP_STATE_BYE_SENT: |
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343 case SIP_STATE_ENDED: |
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344 return; |
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345 default: |
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346 syslog(LOG_CRIT, |
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347 "FATAL: invalid SIP state 0x%x on INVITE %03u response", |
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348 call->sip_state, msg->status_code); |
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349 exit(1); |
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350 } |
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351 } |
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352 |
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353 void |
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354 handle_invite_response(call, msg, sin) |
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355 struct call *call; |
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356 struct sip_pkt_rx *msg; |
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357 struct sockaddr_in *sin; |
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358 { |
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359 char *tag; |
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360 |
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361 tag = extract_to_tag(msg, call->to_uri); |
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362 if (tag) { |
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363 if (!*tag) { |
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364 syslog(LOG_ERR, |
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365 "To tag in INVITE %03u response is null", |
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366 msg->status_code); |
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367 tag = 0; |
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368 } else if (strlen(tag) > MAX_SIP_TO_TAG) { |
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369 syslog(LOG_ERR, |
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370 "To tag in INVITE %03u response exceeds length limit", |
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371 msg->status_code); |
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372 tag = 0; |
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373 } |
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374 } |
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375 if (msg->status_code >= 100 && msg->status_code <= 199) |
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376 handle_1xx(call, msg, tag, sin); |
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377 else if (msg->status_code >= 200 && msg->status_code <= 299) |
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378 handle_200(call, msg, tag, sin); |
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379 else |
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380 handle_error(call, msg, tag, sin); |
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381 } |