FreeCalypso > hg > themwi-system-sw
annotate sip-in/mncc_handle.c @ 72:9ca6f0708237
libsip: add extract_to_tag() function
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 20 Sep 2022 10:54:10 -0800 |
parents | 5beb51de1bae |
children | 3e3fbf44f9d7 |
rev | line source |
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1 /* |
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2 * In this module we implement our handling of call control messages |
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3 * from OsmoMSC relayed to us via themwi-mncc. |
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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/mncc.h" |
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16 #include "../include/gsm48_const.h" |
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17 #include "call.h" |
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18 |
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19 extern struct call *find_call_by_mncc_callref(); |
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20 |
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21 static void |
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22 handle_alerting(call, msg) |
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23 struct call *call; |
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24 struct gsm_mncc *msg; |
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25 { |
65
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26 if (call->mncc_state != MNCC_STATE_STARTED) { |
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27 syslog(LOG_ERR, "MNCC_ALERT_IND in wrong MNCC state 0x%x", |
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28 call->mncc_state); |
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29 return; |
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30 } |
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31 call->mncc_state = MNCC_STATE_ALERTING; |
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32 call->overall_state = OVERALL_STATE_ALERTING; |
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33 signal_invite_ringing(call); |
63
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34 } |
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35 |
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36 static void |
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37 handle_answer(call, msg) |
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38 struct call *call; |
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39 struct gsm_mncc *msg; |
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40 { |
66
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41 if (call->mncc_state != MNCC_STATE_STARTED && |
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42 call->mncc_state != MNCC_STATE_ALERTING) { |
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43 syslog(LOG_ERR, "MNCC_SETUP_CNF in wrong MNCC state 0x%x", |
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44 call->mncc_state); |
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45 return; |
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46 } |
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47 call->mncc_state = MNCC_STATE_ANSWERED; |
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48 call->overall_state = OVERALL_STATE_ANSWERED; |
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49 signal_invite_200(call); |
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50 } |
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51 |
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52 static void |
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53 handle_disconnect_ind(call, msg) |
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54 struct call *call; |
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55 struct gsm_mncc *msg; |
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56 { |
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57 /* handling to be implemented */ |
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58 } |
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59 |
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60 static void |
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61 handle_final_release(call, msg) |
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62 struct call *call; |
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63 struct gsm_mncc *msg; |
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64 { |
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65 /* handling to be implemented */ |
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66 } |
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67 |
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68 static void |
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69 handle_signaling_msg(msg, msglen) |
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70 struct gsm_mncc *msg; |
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71 unsigned msglen; |
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72 { |
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73 struct call *call; |
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74 |
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75 if (msglen != sizeof(struct gsm_mncc)) { |
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76 syslog(LOG_CRIT, |
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77 "FATAL: Rx MNCC message type 0x%x has wrong length", |
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78 msg->msg_type); |
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79 exit(1); |
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80 } |
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81 call = find_call_by_mncc_callref(msg->callref); |
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82 if (!call) { |
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83 syslog(LOG_CRIT, |
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84 "error: Rx MNCC message type 0x%x has invalid callref 0x%x", |
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85 msg->msg_type, msg->callref); |
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86 exit(1); |
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87 } |
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88 switch (msg->msg_type) { |
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89 case MNCC_SETUP_CNF: |
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90 handle_answer(call, msg); |
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91 return; |
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92 case MNCC_ALERT_IND: |
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93 handle_alerting(call, msg); |
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94 return; |
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95 case MNCC_DISC_IND: |
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96 handle_disconnect_ind(call, msg); |
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97 return; |
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98 case MNCC_REL_IND: |
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99 case MNCC_REL_CNF: |
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100 case MNCC_REJ_IND: |
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101 handle_final_release(call, msg); |
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102 return; |
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103 case MNCC_START_DTMF_IND: |
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104 msg->msg_type = MNCC_START_DTMF_REJ; |
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105 mncc_set_cause(msg, GSM48_CAUSE_LOC_PRN_S_LU, |
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106 GSM48_CC_CAUSE_SERV_OPT_UNIMPL); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
107 send_mncc_to_gsm(msg, sizeof(struct gsm_mncc)); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
108 return; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
109 case MNCC_STOP_DTMF_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
110 msg->msg_type = MNCC_STOP_DTMF_RSP; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
111 send_mncc_to_gsm(msg, sizeof(struct gsm_mncc)); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
112 return; |
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sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
113 case MNCC_MODIFY_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
114 msg->msg_type = MNCC_MODIFY_REJ; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 mncc_set_cause(msg, GSM48_CAUSE_LOC_PRN_S_LU, |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 GSM48_CC_CAUSE_SERV_OPT_UNIMPL); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 send_mncc_to_gsm(msg, sizeof(struct gsm_mncc)); |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 return; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
119 case MNCC_HOLD_IND: |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
120 msg->msg_type = MNCC_HOLD_REJ; |
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sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 mncc_set_cause(msg, GSM48_CAUSE_LOC_PRN_S_LU, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 GSM48_CC_CAUSE_SERV_OPT_UNIMPL); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
123 send_mncc_to_gsm(msg, sizeof(struct gsm_mncc)); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
124 return; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
125 case MNCC_RETRIEVE_IND: |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
126 msg->msg_type = MNCC_RETRIEVE_REJ; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
127 mncc_set_cause(msg, GSM48_CAUSE_LOC_PRN_S_LU, |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
128 GSM48_CC_CAUSE_SERV_OPT_UNIMPL); |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
129 send_mncc_to_gsm(msg, sizeof(struct gsm_mncc)); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
130 return; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
131 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
132 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
133 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 static void |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
135 handle_rtp_create(msg, msglen) |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
136 struct gsm_mncc_rtp *msg; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 unsigned msglen; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 { |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 struct call *call; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
140 |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 if (msglen != sizeof(struct gsm_mncc_rtp)) { |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 syslog(LOG_CRIT, |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 "FATAL: Rx MNCC message type 0x%x has wrong length", |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 msg->msg_type); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 exit(1); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
146 } |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 call = find_call_by_mncc_callref(msg->callref); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
148 if (!call) { |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
149 syslog(LOG_CRIT, |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
150 "error: Rx MNCC message type 0x%x has invalid callref 0x%x", |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
151 msg->msg_type, msg->callref); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
152 exit(1); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
153 } |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 /* handling to be implemented */ |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
155 } |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
156 |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
157 void |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
158 msg_from_mncc(msg, msglen) |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 union mncc_msg *msg; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 unsigned msglen; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 { |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 switch (msg->msg_type) { |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 case MNCC_SETUP_CNF: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 case MNCC_CALL_CONF_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
165 case MNCC_ALERT_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 case MNCC_NOTIFY_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 case MNCC_DISC_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 case MNCC_FACILITY_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 case MNCC_START_DTMF_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 case MNCC_STOP_DTMF_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 case MNCC_MODIFY_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
172 case MNCC_HOLD_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 case MNCC_RETRIEVE_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 case MNCC_USERINFO_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
175 case MNCC_REL_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
176 case MNCC_REL_CNF: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
177 case MNCC_REJ_IND: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 handle_signaling_msg(msg, msglen); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
179 return; |
e5aee661e3b2
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 case MNCC_RTP_CREATE: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 handle_rtp_create(msg, msglen); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 return; |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 default: |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 syslog(LOG_CRIT, |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
185 "FATAL: received unexpected MNCC message type 0x%x", |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 msg->msg_type); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 exit(1); |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 } |
e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 } |