FreeCalypso > hg > themwi-system-sw
annotate mncc/call_setup.c @ 269:ff1ed366c84d
doc/Number-database: first draft written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 26 Nov 2023 14:51:22 -0800 |
parents | 59a166c50d0e |
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rev | line source |
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1 /* |
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2 * In this module we implement setup of new calls: either new MO calls |
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3 * coming from GSM or new MT calls coming from a ThemWi call socket. |
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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 <stdio.h> |
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9 #include <stdint.h> |
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10 #include <stdlib.h> |
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11 #include <string.h> |
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12 #include <strings.h> |
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13 #include <syslog.h> |
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14 #include "../include/mncc.h" |
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15 #include "../include/gsm48_const.h" |
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16 #include "../include/number_db_v2.h" |
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17 #include "../libnumdb2/lookup_func.h" |
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18 #include "struct.h" |
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19 #include "gsm_call.h" |
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20 |
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21 preen_msc_provided_number(nums) |
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22 struct gsm_mncc_number *nums; |
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23 { |
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24 int len; |
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25 |
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26 len = grok_number_string(nums->number, 0); |
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27 switch (len) { |
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28 case 4: |
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29 nums->type = GSM48_TON_NET_SPEC; |
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30 nums->plan = GSM48_NPI_PRIVATE; |
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31 break; |
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32 case 11: |
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33 if (nums->number[0] != '1') |
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34 return(0); |
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35 nums->type = GSM48_TON_INTERNATIONAL; |
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36 nums->plan = GSM48_NPI_ISDN_E164; |
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37 break; |
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38 default: |
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39 return(0); |
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40 } |
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41 nums->screen = GSM48_SCRN_NETWORK; |
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42 return(1); |
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43 } |
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44 |
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45 void |
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46 reject_mo_call(callref, cause_loc, cause_val) |
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47 uint32_t callref; |
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48 { |
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49 struct gsm_mncc msg; |
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50 |
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51 bzero(&msg, sizeof(struct gsm_mncc)); |
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52 msg.msg_type = MNCC_REJ_REQ; |
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53 msg.callref = callref; |
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54 mncc_set_cause(&msg, cause_loc, cause_val); |
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55 send_mncc_to_gsm(&msg, sizeof(struct gsm_mncc)); |
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56 } |
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57 |
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58 void |
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59 process_mo_call_setup(msg) |
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60 struct gsm_mncc *msg; |
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61 { |
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62 struct gsm_call *call; |
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63 struct owned_number_rec *own; |
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64 struct short_number_rec *snum; |
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65 int is_nanp, is_itn, is_local; |
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66 |
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67 if (preen_msc_provided_number(&msg->calling)) |
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68 msg->fields |= MNCC_F_CALLING; |
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69 else |
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70 msg->fields &= ~MNCC_F_CALLING; |
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71 if (!(msg->fields & MNCC_F_CALLED)) { |
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72 syslog(LOG_ERR, "rejecting MO call 0x%x: no called number", |
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73 msg->callref); |
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74 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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75 GSM48_CC_CAUSE_INVAL_MAND_INF); |
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76 return; |
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77 } |
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78 call = create_gsm_call(msg->callref); |
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79 if (!call) { |
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80 syslog(LOG_ERR, "rejecting MO call 0x%x: no memory for call", |
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81 msg->callref); |
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82 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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83 GSM48_CC_CAUSE_RESOURCE_UNAVAIL); |
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84 return; |
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85 } |
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86 /* route based on destination address */ |
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87 refresh_number_db(); |
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88 is_nanp = is_itn = 0; |
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89 switch (grok_number_string(msg->called.number, 0)) { |
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90 case 4: |
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91 if (msg->called.type != GSM48_TON_UNKNOWN && |
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92 msg->called.type != GSM48_TON_NET_SPEC && |
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93 msg->called.type != GSM48_TON_SHORT_CODE) |
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94 break; |
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95 if (msg->called.plan != GSM48_NPI_UNKNOWN && |
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96 msg->called.plan != GSM48_NPI_ISDN_E164 && |
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97 msg->called.plan != GSM48_NPI_PRIVATE) |
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98 break; |
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99 snum = numdb_lookup_short(msg->called.number); |
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100 if (!snum) { |
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101 syslog(LOG_ERR, |
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102 "rejecting MO call 0x%x: unassigned short number", |
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103 msg->callref); |
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104 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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105 GSM48_CC_CAUSE_UNASSIGNED_NR); |
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106 call->gc_flag = 1; |
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107 return; |
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108 } |
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109 switch (snum->short_num_type) { |
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110 case SHORT_NUM_TYPE_ABBREV: |
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111 is_nanp = 1; |
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112 msg->called.type = GSM48_TON_INTERNATIONAL; |
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parents:
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|
113 msg->called.plan = GSM48_NPI_ISDN_E164; |
243
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167
diff
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|
114 sprintf(msg->called.number, "1%03u%03u%04u", |
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167
diff
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|
115 snum->fullnum_prefix[0], |
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167
diff
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|
116 snum->fullnum_prefix[1], snum->short_num); |
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parents:
167
diff
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|
117 break; |
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167
diff
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|
118 case SHORT_NUM_TYPE_ITN: |
15
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parents:
diff
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|
119 is_itn = 1; |
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parents:
diff
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|
120 msg->called.type = GSM48_TON_NET_SPEC; |
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parents:
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|
121 msg->called.plan = GSM48_NPI_PRIVATE; |
243
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167
diff
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|
122 break; |
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167
diff
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|
123 case SHORT_NUM_TYPE_TEST_SINK: |
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167
diff
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|
124 syslog(LOG_ERR, |
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parents:
167
diff
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|
125 "rejecting MO call 0x%x: test sink not implemented", |
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parents:
167
diff
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|
126 msg->callref); |
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167
diff
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|
127 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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parents:
167
diff
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|
128 GSM48_CC_CAUSE_DEST_OOO); |
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167
diff
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|
129 call->gc_flag = 1; |
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167
diff
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130 return; |
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167
diff
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|
131 default: |
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167
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132 syslog(LOG_ERR, |
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parents:
167
diff
changeset
|
133 "rejecting MO call 0x%x: unknown short number type 0x%02X", |
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167
diff
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|
134 msg->callref, snum->short_num_type); |
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167
diff
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|
135 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
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|
136 GSM48_CC_CAUSE_DEST_OOO); |
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167
diff
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|
137 call->gc_flag = 1; |
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167
diff
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|
138 return; |
15
ccc5ab6d8388
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parents:
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|
139 } |
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parents:
diff
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|
140 break; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
141 case 10: |
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parents:
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142 if (msg->called.type != GSM48_TON_UNKNOWN && |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
143 msg->called.type != GSM48_TON_NATIONAL) |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
144 break; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 if (msg->called.plan != GSM48_NPI_UNKNOWN && |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
146 msg->called.plan != GSM48_NPI_ISDN_E164 && |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 msg->called.plan != GSM48_NPI_NATIONAL) |
ccc5ab6d8388
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parents:
diff
changeset
|
148 break; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
149 if (!is_nanp_valid_prefix(msg->called.number)) { |
28
660126bd5f59
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Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
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|
150 syslog(LOG_ERR, |
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Mychaela Falconia <falcon@freecalypso.org>
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27
diff
changeset
|
151 "rejecting MO call 0x%x: invalid NANP number", |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
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|
152 msg->callref); |
15
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parents:
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changeset
|
153 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 GSM48_CC_CAUSE_INV_NR_FORMAT); |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
155 call->gc_flag = 1; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
156 return; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
157 } |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
158 is_nanp = 1; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 /* canonicalize to international format */ |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 bcopy(msg->called.number, msg->called.number+1, 11); |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 msg->called.number[0] = '1'; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 msg->called.type = GSM48_TON_INTERNATIONAL; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 msg->called.plan = GSM48_NPI_ISDN_E164; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
164 break; |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
165 case 11: |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 if (msg->called.type != GSM48_TON_UNKNOWN && |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 msg->called.type != GSM48_TON_INTERNATIONAL) |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 break; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 if (msg->called.plan != GSM48_NPI_UNKNOWN && |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 msg->called.plan != GSM48_NPI_ISDN_E164) |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 break; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
172 if (msg->called.number[0] != '1') |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 break; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
174 if (!is_nanp_valid_prefix(msg->called.number+1)) { |
28
660126bd5f59
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Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
changeset
|
175 syslog(LOG_ERR, |
660126bd5f59
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Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
changeset
|
176 "rejecting MO call 0x%x: invalid NANP number", |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
changeset
|
177 msg->callref); |
15
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
178 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
179 GSM48_CC_CAUSE_INV_NR_FORMAT); |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 call->gc_flag = 1; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 return; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 } |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 is_nanp = 1; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
184 /* canonicalize to international format */ |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
185 msg->called.type = GSM48_TON_INTERNATIONAL; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
186 msg->called.plan = GSM48_NPI_ISDN_E164; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 break; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 } |
ccc5ab6d8388
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 is_local = is_itn; |
243
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
190 if (is_nanp && (own = numdb_lookup_nanp(msg->called.number+1))) { |
15
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 is_local = 1; |
243
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
192 switch (own->usage & NUMBER_USAGE_MASK) { |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
193 case NUMBER_USAGE_TYPE_GSM_SUB: |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
194 break; |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
195 case NUMBER_USAGE_TYPE_ALIAS: |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
196 sprintf(msg->called.number, "1%03u%03u%04u", |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
197 own->remap[0], own->remap[1], own->remap[2]); |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
198 break; |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
199 default: |
59a166c50d0e
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Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
200 syslog(LOG_ERR, |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
201 "rejecting MO call 0x%x: unassigned owned NANP", |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
202 msg->callref); |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
203 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
204 GSM48_CC_CAUSE_UNASSIGNED_NR); |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
205 call->gc_flag = 1; |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
206 return; |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
207 } |
59a166c50d0e
themwi-mncc: convert to libnumdb2
Mychaela Falconia <falcon@freecalypso.org>
parents:
167
diff
changeset
|
208 } |
15
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
209 /* weed out attempts to call yourself */ |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
210 if (is_local && !strcmp(msg->calling.number, msg->called.number)) { |
28
660126bd5f59
themwi-mncc: fix one bug, add debug syslog output
Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
changeset
|
211 syslog(LOG_ERR, "rejecting MO call 0x%x: call to self", |
660126bd5f59
themwi-mncc: fix one bug, add debug syslog output
Mychaela Falconia <falcon@freecalypso.org>
parents:
27
diff
changeset
|
212 msg->callref); |
15
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
213 reject_mo_call(msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
214 GSM48_CC_CAUSE_INCOMPAT_DEST); |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
215 call->gc_flag = 1; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
216 return; |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
217 } |
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
218 /* actually route the call */ |
167
2ebad02adbe5
themwi-mncc: route outbound calls to themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents:
28
diff
changeset
|
219 if (is_local) |
15
ccc5ab6d8388
first version of themwi-mncc for ThemWi2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
220 internal_switch_mo_setup(call, msg); |
167
2ebad02adbe5
themwi-mncc: route outbound calls to themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents:
28
diff
changeset
|
221 else |
2ebad02adbe5
themwi-mncc: route outbound calls to themwi-sip-out
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222 outbound_mo_setup(call, msg); |
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223 } |
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224 |
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225 static void |
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226 reject_mt_call(conn, callref, cause_loc, cause_val) |
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227 struct socket_conn *conn; |
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228 uint32_t callref; |
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229 { |
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230 struct gsm_mncc msg; |
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231 |
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232 bzero(&msg, sizeof(struct gsm_mncc)); |
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233 msg.msg_type = MNCC_REJ_REQ; |
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234 msg.callref = callref; |
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235 mncc_set_cause(&msg, cause_loc, cause_val); |
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236 mncc_signal_to_socket_nocall(conn, &msg); |
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237 } |
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238 |
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239 void |
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240 process_ext_mtcall_setup(conn, msg) |
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241 struct socket_conn *conn; |
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242 struct gsm_mncc *msg; |
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243 { |
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244 struct gsm_call *call; |
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245 |
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246 if (!(msg->fields & MNCC_F_CALLED) && !msg->imsi[0]) { |
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660126bd5f59
themwi-mncc: fix one bug, add debug syslog output
Mychaela Falconia <falcon@freecalypso.org>
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247 syslog(LOG_ERR, "rejecting ext MT: no called number"); |
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248 reject_mt_call(conn, msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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249 GSM48_CC_CAUSE_INVAL_MAND_INF); |
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250 return; |
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251 } |
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252 call = create_new_mt_call(); |
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253 if (!call) { |
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254 syslog(LOG_ERR, "rejecting ext MT: no memory for call"); |
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255 reject_mt_call(conn, msg->callref, GSM48_CAUSE_LOC_PRN_S_LU, |
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256 GSM48_CC_CAUSE_RESOURCE_UNAVAIL); |
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257 return; |
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258 } |
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259 call->socket = conn; |
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260 call->socket_ref = msg->callref; |
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261 conn->ncalls++; |
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262 syslog(LOG_DEBUG, "mapped socket callref 0x%x to GSM callref 0x%x", |
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263 msg->callref, call->callref); |
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264 /* forward to GSM MNCC interface */ |
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265 msg->callref = call->callref; |
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themwi-mncc: fix bug in forwarding from call socket to GSM
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266 send_mncc_to_gsm(msg, sizeof(struct gsm_mncc)); |
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267 } |
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268 |
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269 preen_connected_number(msg) |
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270 struct gsm_mncc *msg; |
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271 { |
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272 if (preen_msc_provided_number(&msg->connected)) |
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273 msg->fields |= MNCC_F_CONNECTED; |
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274 else |
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275 msg->fields &= ~MNCC_F_CONNECTED; |
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276 } |