annotate src/gpf3/ccd/gsm7_lv.c @ 516:1ed9de6c90bd

src/g23m-gsm/sms/sms_for.c: bogus malloc removed The new error handling code that was not present in TCS211 blob version contains a malloc call that is bogus for 3 reasons: 1) The memory allocation in question is not needed in the first place; 2) libc malloc is used instead of one of the firmware's proper ways; 3) The memory allocation is made inside a function and then never freed, i.e., a memory leak. This bug was caught in gcc-built FreeCalypso fw projects (Citrine and Selenite) because our gcc environment does not allow any use of libc malloc (any reference to malloc produces a link failure), but this code from TCS3.2 is wrong even for Magnetite: if this code path is executed repeatedly over a long time, the many small allocations made by this malloc call without a subsequent free will eventually exhaust the malloc heap provided by the TMS470 environment, malloc will start returning NULL, and the bogus code will treat it as an error. Because the memory allocation in question is not needed at all, the fix entails simply removing it.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Jul 2018 06:04:49 +0000
parents c41a534f33c6
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project :
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4 | Modul : gsm7_lv.c
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : Definition of encoding and decoding functions for GSM7_LV elements
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18 +-----------------------------------------------------------------------------
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19 */
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20
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21
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22 /*
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23 * standard definitions like GLOBAL, UCHAR, ERROR etc.
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24 */
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25 #include "typedefs.h"
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26 #include "header.h"
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27
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28 /*
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29 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only
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30 * look at ccdapi.h
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31 */
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32 #undef USE_DRIVER
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33 #include "ccdapi.h"
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34
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35 /*
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36 * Types and functions for bit access and manipulation
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37 */
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38 #include "ccd_globs.h"
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39 #include "bitfun.h"
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40
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41 /*
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42 * Prototypes of ccd internal functions
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43 */
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44 #include "ccd.h"
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45
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46 /*
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47 * Declaration of coder/decoder tables
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48 */
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49 #include "ccdtable.h"
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50 #include "ccddata.h"
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51
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52 #ifndef RUN_INT_RAM
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53 /*
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54 +--------------------------------------------------------------------+
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55 | PROJECT : CCD (6144) MODULE : CDC_GSM |
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56 | STATE : code ROUTINE : cdc_gsm7lv_decode |
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57 +--------------------------------------------------------------------+
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58
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59 PURPOSE : Decoding of the GSM Type 7LV element. This element
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60 consists of a 7 bit L component which defines the length
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61 of the following V value in bits and a V component wich
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62 length depends on the value of the L component.
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63 */
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64
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65 SHORT cdc_gsm7lv_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
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66 {
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67 T_TLV_SORT tlv_inf;
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68
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69 tlv_inf.gotTag = FALSE;
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70 tlv_inf.gotLen = TRUE;
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71
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72 #ifdef DEBUG_CCD
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73 #ifndef CCD_SYMBOLS
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74 TRACE_CCD (globs, "cdc_gsm7lv_decode()");
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75 #else
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76 TRACE_CCD (globs, "cdc_gsm7lv_decode() %s", ccddata_get_alias((USHORT) e_ref, 1));
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77 #endif
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78 #endif
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79
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80 return cdc_tlv_decode (c_ref, e_ref, &tlv_inf, globs);
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81 }
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82 #endif /* !RUN_INT_RAM */
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83
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84 #ifndef RUN_INT_RAM
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85 /*
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86 +--------------------------------------------------------------------+
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87 | PROJECT : CCD (6144) MODULE : CDC_GSM |
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88 | STATE : code ROUTINE : cdc_gsm7lv_encode |
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89 +--------------------------------------------------------------------+
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90
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91 PURPOSE : Encoding of the GSM Type 7LV element. This element
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92 consists of a 7 bit L component which defines the length
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93 of the following V value in bits and a V component wich
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94 length depends on the value of the L component.
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95
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96 */
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97
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98 SHORT cdc_gsm7lv_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
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99 {
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100 #ifdef DEBUG_CCD
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101 #ifndef CCD_SYMBOLS
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102 TRACE_CCD (globs, "cdc_gsm7lv_encode()");
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103 #else
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104 TRACE_CCD (globs, "cdc_gsm7lv_encode() %s", ccddata_get_alias((USHORT) e_ref, 1));
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105 #endif
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106 #endif
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107
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108 cdc_tlv_encode (e_ref, 0, 7, globs);
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109
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110 return 1;
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111 }
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112 #endif /* !RUN_INT_RAM */