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annotate mncc/gsm_call.c @ 218:211a043a385f

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smpp-test1 program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 01 Aug 2023 22:38:04 -0800
parents 660126bd5f59
children
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1 /*
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2 * In this module we implement allocation, freeing and retrieval
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3 * of gsm_call structures.
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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 <stdio.h>
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8 #include <stdint.h>
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9 #include <stdlib.h>
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10 #include <string.h>
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11 #include <strings.h>
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12 #include <syslog.h>
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13 #include "struct.h"
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14 #include "gsm_call.h"
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16 struct gsm_call *call_list_head;
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17
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18 static uint32_t mt_callref;
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19
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20 struct gsm_call *
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21 find_gsm_callref(callref)
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22 uint32_t callref;
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23 {
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24 struct gsm_call *call;
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25
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26 for (call = call_list_head; call; call = call->next) {
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27 if (call->gc_flag)
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28 continue;
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29 if (call->callref == callref)
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30 return call;
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31 }
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32 return 0;
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33 }
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34
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35 struct gsm_call *
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36 find_socket_call(conn, ref)
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37 struct socket_conn *conn;
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38 uint32_t ref;
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39 {
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40 struct gsm_call *call;
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41
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42 for (call = call_list_head; call; call = call->next) {
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43 if (call->gc_flag)
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44 continue;
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45 if (call->socket == conn && call->socket_ref == ref)
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46 return call;
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47 }
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48 return 0;
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49 }
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50
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51 struct gsm_call *
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52 create_gsm_call(callref)
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53 uint32_t callref;
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54 {
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55 struct gsm_call *call;
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56
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57 call = malloc(sizeof(struct gsm_call));
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58 if (call) {
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59 bzero(call, sizeof(struct gsm_call));
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60 call->callref = callref;
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61 call->next = call_list_head;
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62 call_list_head = call;
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63 }
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64 return call;
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65 }
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66
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67 uint32_t
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68 alloc_mt_callref()
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69 {
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70 mt_callref++;
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71 if (mt_callref > 0x7FFFFFFF)
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72 mt_callref = 1;
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73 return mt_callref;
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74 }
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75
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76 struct gsm_call *
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77 create_new_mt_call()
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78 {
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79 uint32_t callref;
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80
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81 for (;;) {
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82 callref = alloc_mt_callref();
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83 if (!find_gsm_callref(callref))
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84 break;
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85 }
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86 syslog(LOG_DEBUG, "creating new MT callref 0x%x", callref);
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87 return create_gsm_call(callref);
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88 }
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89
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90 gc_call_list()
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91 {
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92 struct gsm_call *call, **cp;
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93
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94 for (cp = &call_list_head; call = *cp; ) {
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95 if (call->gc_flag) {
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96 *cp = call->next;
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97 free(call);
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98 continue;
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99 }
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100 cp = &call->next;
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101 }
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102 }