FreeCalypso > hg > fc-magnetite
annotate src/g23m-aci/aci/plmn_decoder.c @ 636:57e67ca2e1cb
pcmdata.c: default +CGMI to "FreeCalypso" and +CGMM to model
The present change has no effect whatsoever on Falconia-made and Openmoko-made
devices on which /pcm/CGMI and /pcm/CGMM files have been programmed in FFS
with sensible ID strings by the respective factories, but what should AT+CGMI
and AT+CGMM queries return when the device is a Huawei GTM900 or Tango modem
that has been converted to FreeCalypso with a firmware change? Before the
present change they would return compiled-in defaults of "<manufacturer>" and
"<model>", respectively; with the present change the firmware will self-identify
as "FreeCalypso GTM900-FC" or "FreeCalypso Tango" on the two respective targets.
This firmware identification will become important if someone incorporates an
FC-converted GTM900 or Tango modem into a ZeroPhone-style smartphone where some
high-level software like ofono will be talking to the modem and will need to
properly identify this modem as FreeCalypso, as opposed to some other AT command
modem flavor with different quirks.
In technical terms, the compiled-in default for the AT+CGMI query (which will
always be overridden by the /pcm/CGMI file in FFS if one is present) is now
"FreeCalypso" in all configs on all targets; the compiled-in default for the
AT+CGMM query (likewise always overridden by /pcm/CGMM if present) is
"GTM900-FC" if CONFIG_TARGET_GTM900 or "Tango" if CONFIG_TARGET_TANGO or the
original default of "<model>" otherwise.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 19 Jan 2020 20:14:58 +0000 |
| parents | 53929b40109c |
| children |
| rev | line source |
|---|---|
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1 /* plmn_decoder.cpp : Defines the entry point for the console application. */ |
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2 |
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3 #include <assert.h> |
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4 #include <stdio.h> |
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5 #include <stddef.h> |
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6 #include <stdlib.h> |
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7 #include <string.h> |
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8 |
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9 #ifdef TI_PS_OP_OPN_TAB_ROMBASED |
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10 #ifndef CMH_PLMN_DECODER_C |
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11 #define CMH_PLMN_DECODER_C |
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12 #endif |
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13 |
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14 #include "aci_all.h" |
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15 |
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16 /*==== INCLUDES ===================================================*/ |
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17 |
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18 #include "aci_cmh.h" |
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19 #include "ati_cmd.h" |
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20 #include "aci_cmd.h" |
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21 #include "aci_mem.h" |
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22 #include "pcm.h" |
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23 |
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24 #ifdef TI_PS_OP_OPN_TAB_ROMBASED |
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25 #include "rom_tables.h" |
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26 #endif /* TI_PS_OP_OPN_TAB_ROMBASED */ |
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27 |
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28 |
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29 #ifdef FAX_AND_DATA |
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30 #include "aci_fd.h" |
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31 #endif /* of #ifdef FAX_AND_DATA */ |
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32 |
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33 #include "aci.h" |
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34 #include "psa.h" |
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35 #include "psa_mm.h" |
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36 #include "psa_sim.h" |
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37 #include "psa_util.h" |
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38 #include "cmh.h" |
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39 |
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40 |
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41 |
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42 #define PLMN_LONGNAME_LOOKUP 0xff |
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43 |
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44 EXTERN void cmhSIM_getMncMccFrmPLMNsel( const UBYTE* ntry, |
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45 SHORT* mcc, |
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46 SHORT* mnc ); |
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47 |
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48 /* NHK: |
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49 * Once the tables plmn_compressed, plmn_dict_offset and plmn_dict go to ROM, their names below should match corresponding ROM addresses |
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50 * KSR: Moved to g23m\condat\com\src\drivers\rom_tables.c |
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51 */ |
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52 |
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53 /* |
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54 +----------------------------------------------------------------------------+ |
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55 | PROJECT : GSM-PS (6147) MODULE : MM_MM | |
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56 | STATE : code ROUTINE : cmhMM_CompLongLength | |
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57 +----------------------------------------------------------------------------+ |
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58 |
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59 PURPOSE : This function gets the compressed length of the longName |
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60 from a compressed PLMN entry. |
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61 |
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62 */ |
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63 LOCAL USHORT cmhMM_CompLongLength (const UBYTE *plmn_comp_entry) |
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64 { |
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65 UBYTE length_byte; |
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66 |
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67 length_byte = *(plmn_comp_entry + 3); |
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68 |
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69 return ((length_byte >> 3) & 0x1f) + 1; |
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70 } |
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71 |
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72 /* |
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73 +----------------------------------------------------------------------------+ |
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74 | PROJECT : GSM-PS (6147) MODULE : MM_MM | |
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75 | STATE : code ROUTINE : cmhMM_CompShrtLength | |
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76 +----------------------------------------------------------------------------+ |
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77 |
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78 PURPOSE : This function gets the compressed length of the shrtName |
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79 from a compressed PLMN entry. |
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80 |
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81 */ |
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82 LOCAL USHORT cmhMM_CompShrtLength (const UBYTE *plmn_comp_entry) |
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83 { |
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84 UBYTE length_byte; |
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85 |
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86 length_byte = *(plmn_comp_entry + 3); |
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87 |
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88 return ((length_byte ) & 0x07) + 1; |
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89 } |
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90 |
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91 |
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92 /* |
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93 +----------------------------------------------------------------------------+ |
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94 | PROJECT : GSM-PS (6147) MODULE : MM_MM | |
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95 | STATE : code ROUTINE : cmhMM_PlmnEntryLength | |
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96 +----------------------------------------------------------------------------+ |
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97 |
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98 PURPOSE : This function gets the length of a compressed PLMN entry. |
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99 |
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100 */ |
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101 GLOBAL USHORT cmhMM_PlmnEntryLength (const UBYTE *plmn_comp_entry) |
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102 { |
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103 return (4 + cmhMM_CompLongLength (plmn_comp_entry) |
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104 + cmhMM_CompShrtLength (plmn_comp_entry)); |
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105 } |
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106 |
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107 |
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108 /* |
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109 +----------------------------------------------------------------------------+ |
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110 | PROJECT : GSM-PS (6147) MODULE : MM_MM | |
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111 | STATE : code ROUTINE : cmhMM_Decompress | |
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112 +----------------------------------------------------------------------------+ |
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113 |
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114 PURPOSE : This function decompresses a compressed string. |
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115 If the decompressed string is the long PLMN name the longName |
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116 parameter is NULL, when the decompressed string is the short |
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117 PLMN name the longName parameter is the previously decompressed |
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118 PLMN long name, as in some cases the short PLMN name consists of |
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119 parts of the long PLMN name lookups within the decompressed long |
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120 name will be done when advised to do so by the compressed byte |
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121 string. |
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122 On success the function returns with zero, on detection of an |
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123 internal error a negative value is returned. |
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124 |
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125 */ |
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126 LOCAL SHORT cmhMM_Decompress (char *decomp_string, |
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127 const char *longName, |
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128 const UBYTE *comp_string, |
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129 USHORT comp_length) |
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130 { |
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131 USHORT offset; |
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132 USHORT length; |
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133 |
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134 while (comp_length > 0) |
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135 { |
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136 if (*comp_string < 128) |
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137 { |
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138 /* GSM default alphabet. Take character 1:1 */ |
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139 *decomp_string = *comp_string; |
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140 decomp_string++; |
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141 } |
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142 else if (*comp_string EQ PLMN_LONGNAME_LOOKUP) |
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143 { |
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144 if ((longName EQ NULL) OR (comp_length <= 1)) |
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145 { |
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146 TRACE_ERROR ("Cannot process longName lookup"); |
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147 return -1; |
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148 } |
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149 |
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150 /* Decoding short name. Lookup into long name */ |
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151 |
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152 /* Skip PLMN_LONGNAME_LOOKUP */ |
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153 comp_string++; |
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154 comp_length--; |
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155 |
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156 /* Get offset and length of substring in long name */ |
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157 offset = (*comp_string >> 3) & 0x1f; |
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158 length = (*comp_string & 0x07) + 1; |
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159 memcpy (decomp_string, longName + offset, length); |
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160 decomp_string += length; |
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161 } |
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162 else |
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163 { |
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164 /* Dictionary lookup */ |
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165 |
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166 /* Get offset of dictionary entry */ |
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167 offset = *(ptr_plmn_dict_offset + (*comp_string - 128)); |
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168 |
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169 /* Get length of dictionary entry */ |
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170 length = *(ptr_plmn_dict_offset + (*comp_string - 128 + 1)) - offset; |
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171 memcpy (decomp_string, ptr_plmn_dict + offset, length); |
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172 decomp_string += length; |
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173 } |
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174 comp_string++; |
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175 comp_length--; |
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176 } |
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177 decomp_string = '\0'; |
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178 return 0; |
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179 } |
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180 |
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181 |
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182 /* |
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183 +----------------------------------------------------------------------------+ |
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184 | PROJECT : GSM-PS (6147) MODULE : MM_MM | |
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185 | STATE : code ROUTINE : cmhMM_decodePlmn | |
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186 +----------------------------------------------------------------------------+ |
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187 |
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188 PURPOSE : This function decodes a compressed PLMN entry into a decompressed |
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189 T_OPER_ENTRY structure. On success this function returns with |
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190 zero, if during decompression an internal error is detected the |
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191 function returns with a negative value. |
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192 |
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193 */ |
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194 GLOBAL SHORT cmhMM_decodePlmn (T_OPER_ENTRY *oper, const UBYTE *plmn_comp_entry) |
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195 { |
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196 SHORT mcc; /* Mobile Country Code */ |
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197 SHORT mnc; /* Mobile Network Code */ |
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198 USHORT comp_Length; /* Compressed string length */ |
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199 SHORT result; /* Decompression result */ |
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200 const UBYTE *comp_ptr; /* Compressed PLMNs pointer */ |
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201 |
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202 memset (oper, 0, sizeof (T_OPER_ENTRY)); |
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203 |
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204 cmhSIM_getMncMccFrmPLMNsel (plmn_comp_entry, &mcc, &mnc); |
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205 oper->mcc = mcc; |
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206 oper->mnc = mnc; |
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207 |
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208 if (mcc EQ -1) |
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209 return -1; /* Got end of list, not processing further */ |
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210 |
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Mychaela Falconia <falcon@freecalypso.org>
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211 /* Decompress longName */ |
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Mychaela Falconia <falcon@freecalypso.org>
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212 comp_ptr = plmn_comp_entry + 4; |
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Mychaela Falconia <falcon@freecalypso.org>
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213 comp_Length = cmhMM_CompLongLength (plmn_comp_entry); |
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Mychaela Falconia <falcon@freecalypso.org>
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214 result = cmhMM_Decompress (oper->longName, NULL, |
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215 comp_ptr, comp_Length); |
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Mychaela Falconia <falcon@freecalypso.org>
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216 if (result < 0) |
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217 return result; |
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218 |
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Mychaela Falconia <falcon@freecalypso.org>
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219 /* Decompress shrtName */ |
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Mychaela Falconia <falcon@freecalypso.org>
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220 comp_ptr += comp_Length; |
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221 comp_Length = cmhMM_CompShrtLength (plmn_comp_entry); |
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222 result = cmhMM_Decompress (oper->shrtName, oper->longName, |
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223 comp_ptr, comp_Length); |
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224 return result; |
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Mychaela Falconia <falcon@freecalypso.org>
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225 } |
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Mychaela Falconia <falcon@freecalypso.org>
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226 |
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227 #endif |
