FreeCalypso > hg > themwi-system-sw
annotate sip-in/mgw_ops.c @ 87:9e9034ef476c
sip-in: send CONNECT ACK to GSM upon SIP ACK after 200
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 20 Sep 2022 23:20:50 -0800 |
parents | f332ccc240f1 |
children | 423610bb2c9e |
rev | line source |
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60
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1 /* |
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2 * In this module we implement all transactions from themwi-sip-in |
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3 * toward themwi-mgw. |
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4 */ |
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5 |
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6 #include <sys/types.h> |
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7 #include <sys/socket.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/tmgw_ctrl.h" |
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16 #include "../include/tmgw_const.h" |
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17 #include "call.h" |
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18 |
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19 extern struct call *call_list; |
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20 |
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21 struct call * |
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22 find_call_with_mgw_xact(xact_id) |
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23 uint32_t xact_id; |
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24 { |
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25 struct call *call; |
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26 |
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27 for (call = call_list; call; call = call->next) |
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28 if (call->mgw_xact && call->mgw_xact_id == xact_id) |
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29 return call; |
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30 return 0; |
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31 } |
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32 |
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33 uint32_t |
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34 get_new_tmgw_xact_id() |
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35 { |
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36 static uint32_t next_xact_id; |
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37 |
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38 for (;;) { |
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39 next_xact_id++; |
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40 if (!find_call_with_mgw_xact(next_xact_id)) |
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41 return next_xact_id; |
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42 } |
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43 } |
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44 |
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45 void |
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46 tmgw_send_crcx(call) |
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47 struct call *call; |
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48 { |
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49 struct tmgw_ctrl_req req; |
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50 |
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51 bzero(&req, sizeof req); |
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52 req.opcode = TMGW_CTRL_OP_CRCX; |
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53 req.transact_ref = get_new_tmgw_xact_id(); |
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54 req.ep_id = TMGW_EP_TYPE_GATEWAY; |
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55 req.setup_mask = TMGW_CTRL_MASK_PSTN_CONN; |
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56 bcopy(&call->pstn_rtp_remote, &req.pstn_addr, |
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57 sizeof(struct sockaddr_in)); |
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58 req.pstn_payload_type = |
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59 call->use_pcma ? PSTN_CODEC_PCMA : PSTN_CODEC_PCMU; |
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60 send_req_to_tmgw(&req); |
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61 call->mgw_xact = TMGW_CTRL_OP_CRCX; |
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62 call->mgw_xact_id = req.transact_ref; |
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63 } |
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64 |
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65 void |
86
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62
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66 tmgw_send_mdcx_connect(call) |
60
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67 struct call *call; |
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68 { |
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69 struct tmgw_ctrl_req req; |
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70 |
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71 bzero(&req, sizeof req); |
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72 req.opcode = TMGW_CTRL_OP_MDCX; |
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73 req.transact_ref = get_new_tmgw_xact_id(); |
61
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74 req.ep_id = call->mgw_ep_id; |
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62
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75 req.setup_mask = TMGW_CTRL_MASK_GSM_CONN | TMGW_CTRL_MASK_FWD_MODE; |
60
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76 bcopy(&call->gsm_rtp_osmo, &req.gsm_addr, |
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77 sizeof(struct sockaddr_storage)); |
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78 req.gsm_payload_type = call->gsm_payload_type; |
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79 req.gsm_payload_msg_type = call->gsm_payload_msg_type; |
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62
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80 req.fwd_mode = TMGW_FWD_MODE_SENDRECV; |
60
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81 send_req_to_tmgw(&req); |
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82 call->mgw_state = MGW_STATE_CONNECTING; |
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83 call->mgw_xact = TMGW_CTRL_OP_MDCX; |
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84 call->mgw_xact_id = req.transact_ref; |
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85 } |
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86 |
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87 void |
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88 tmgw_send_dlcx(call) |
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89 struct call *call; |
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90 { |
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91 struct tmgw_ctrl_req req; |
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92 |
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93 bzero(&req, sizeof req); |
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94 req.opcode = TMGW_CTRL_OP_DLCX; |
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95 req.transact_ref = get_new_tmgw_xact_id(); |
61
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96 req.ep_id = call->mgw_ep_id; |
60
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97 send_req_to_tmgw(&req); |
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98 call->mgw_state = MGW_STATE_DELETING; |
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99 call->mgw_xact = TMGW_CTRL_OP_DLCX; |
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100 call->mgw_xact_id = req.transact_ref; |
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101 } |
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102 |
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103 static void |
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104 handle_crcx_fail(call, msg) |
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105 struct call *call; |
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106 struct tmgw_ctrl_resp *msg; |
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107 { |
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108 call->overall_state = OVERALL_STATE_TEARDOWN; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
109 strcpy(call->invite_fail, "503 Gateway resource allocation failure"); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
110 signal_invite_error(call); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
111 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
112 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
113 static void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
114 crcx_response(call, msg) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 struct call *call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 struct tmgw_ctrl_resp *msg; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 if (msg->res == TMGW_RESP_OK) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
119 call->mgw_state = MGW_STATE_ALLOCATED; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
120 call->mgw_ep_id = msg->ep_id; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 bcopy(&msg->gsm_addr, &call->gsm_rtp_tmgw, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 sizeof(struct sockaddr_storage)); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
123 bcopy(&msg->pstn_addr, &call->pstn_rtp_local, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
124 sizeof(struct sockaddr_in)); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
125 switch (call->overall_state) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
126 case OVERALL_STATE_CRCX: |
62
75b7a7b61824
sip-in: got as far as sending MNCC_SETUP_REQ to themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
61
diff
changeset
|
127 proceed_with_call_setup(call); |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
128 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
129 case OVERALL_STATE_TEARDOWN: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
130 tmgw_send_dlcx(call); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
131 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
132 default: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
133 bad_state: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 syslog(LOG_CRIT, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
135 "FATAL: invalid overall state 0x%x on CRCX response", |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
136 call->overall_state); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 exit(1); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 } else { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
140 switch (call->overall_state) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 case OVERALL_STATE_CRCX: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 handle_crcx_fail(call, msg); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 case OVERALL_STATE_TEARDOWN: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
146 default: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 goto bad_state; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
148 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
149 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
150 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
151 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
152 static void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
153 mdcx_response(call, msg) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 struct call *call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
155 struct tmgw_ctrl_resp *msg; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
156 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
157 /* will be handled later */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
158 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 static void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 dlcx_response(call, msg) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 struct call *call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 struct tmgw_ctrl_resp *msg; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
165 if (msg->res != TMGW_RESP_OK) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 syslog(LOG_CRIT, "FATAL: TMGW DLCX failed with code 0x%x", |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 msg->res); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 exit(1); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 call->mgw_state = MGW_STATE_NO_EXIST; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 /* TODO: transition from TEARDOWN to DEAD_SIP */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
172 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
175 process_tmgw_response(msg) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
176 struct tmgw_ctrl_resp *msg; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
177 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 struct call *call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
179 unsigned opc; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 call = find_call_with_mgw_xact(msg->transact_ref); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 if (!call) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 syslog(LOG_CRIT, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 "FATAL: response from TMGW xact 0x%x does not match any call", |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
185 msg->transact_ref); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 exit(1); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 opc = call->mgw_xact; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 call->mgw_xact = 0; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
190 switch (opc) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 case TMGW_CTRL_OP_CRCX: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
192 crcx_response(call, msg); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
193 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
194 case TMGW_CTRL_OP_MDCX: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
195 mdcx_response(call, msg); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
196 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
197 case TMGW_CTRL_OP_DLCX: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
198 dlcx_response(call, msg); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
199 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
200 default: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
201 syslog(LOG_CRIT, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
202 "FATAL: invalid opcode 0x%x in call->msg_xact", opc); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
203 exit(1); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
204 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
205 } |