FreeCalypso > hg > fc-magnetite
annotate src/g23m-fad/ppp/ppp_papf.c @ 340:2f41f7883261
FCHG: logic error in the charge (re)start condition
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 15 Dec 2017 18:57:05 +0000 |
parents | 90eb61ecd093 |
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rev | line source |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : |
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4 | Modul : |
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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 : This modul is part of the entity PPP and implements all |
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18 | procedures and functions as described in the |
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19 | SDL-documentation (PAP-statemachine) |
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20 +----------------------------------------------------------------------------- |
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21 */ |
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22 |
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23 #ifndef PPP_PAPF_C |
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24 #define PPP_PAPF_C |
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25 #endif /* !PPP_PAPF_C */ |
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26 |
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27 #define ENTITY_PPP |
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28 |
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29 /*==== INCLUDES =============================================================*/ |
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30 |
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31 #include "typedefs.h" /* to get Condat data types */ |
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32 #include "vsi.h" /* to get a lot of macros */ |
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33 #include "macdef.h" /* to get a lot of macros */ |
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34 #include "custom.h" /* to get a lot of macros */ |
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35 #include "gsm.h" /* to get a lot of macros */ |
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36 #include "cnf_ppp.h" /* to get cnf-definitions */ |
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37 #include "mon_ppp.h" /* to get mon-definitions */ |
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38 #include "prim.h" /* to get the definitions of used SAP and directions */ |
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39 #include "dti.h" /* to get the DTILIB definitions */ |
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40 #include "ppp.h" /* to get the global entity definitions */ |
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41 |
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42 #include "ppp_arbf.h" /* to get function interface from arb */ |
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43 #include <string.h> /* to get memcpy */ |
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44 |
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45 /*==== CONST ================================================================*/ |
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46 |
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47 #define PAP_AUTH_ACK_LENGTH 5 |
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48 |
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49 /* |
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50 * the authentication request packet must be passable to the ISP in protocol |
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51 * configuration options (pco). The maximum length of pco is |
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52 * 251 octets (253 - 2 (identification overhead) = 251). There must also be |
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53 * space for other protocol packet, like LCP and IPCP. |
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54 * LCP needs |
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55 * 15 octets (3 (overhead pco) + 4 (overhead packet) + 4 (mru) + 4 |
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56 * (authentication protocol PAP) = 15) for server packet and |
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57 * 11 octets (3 (overhead pco) + 4 (overhead packet) + 4 (mru) = 11) for |
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58 * client packet. |
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59 * IPCP needs |
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60 * 31 octets (3 (overhead pco) + 4 (overhead packet) + 6 (IP address) + 6 |
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61 * (VJ header compression) + 6 (primary DNS) + 6 (secondary DNS) = 31) for |
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62 * client packet and |
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63 * 13 octets (3 (overhead pco) + 4 (overhead packet) + 6 |
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64 * (Gateway address) = 13) for gateway address packet. |
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65 * PAP needs |
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66 * 3 octets for pco overhead. |
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67 */ |
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68 #define PAP_AUTH_REQ_LENGTH_MAX (251 - 15 - 11 - 31 - 13 - 3) |
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69 |
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70 #define PAP_AUTH_NAK_TEXT "authentication packet to long" |
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71 #define PAP_AUTH_NAK_TEXT_LENGTH sizeof(PAP_AUTH_NAK_TEXT) |
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72 #define PAP_AUTH_NAK_LENGTH (5 + PAP_AUTH_NAK_TEXT_LENGTH) |
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73 |
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74 /*==== LOCAL VARS ===========================================================*/ |
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75 |
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76 /*==== PRIVATE FUNCTIONS ====================================================*/ |
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77 |
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78 /*==== PUBLIC FUNCTIONS =====================================================*/ |
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79 |
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80 |
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81 |
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82 /* |
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83 +------------------------------------------------------------------------------ |
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84 | Function : pap_init |
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85 +------------------------------------------------------------------------------ |
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86 | Description : The function pap_init() initializes Password Authentication |
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87 | Protocol |
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88 | |
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89 | Parameters : no parameters |
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90 | |
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91 +------------------------------------------------------------------------------ |
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92 */ |
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93 GLOBAL void pap_init () |
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94 { |
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95 TRACE_FUNCTION( "pap_init" ); |
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96 |
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97 /* |
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98 * initialize values |
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99 */ |
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100 ppp_data->pap.counter = 0; |
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101 ppp_data->pap.nari = 0; |
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102 ppp_data->pap.ar_packet = NULL; |
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103 |
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104 INIT_STATE( PPP_SERVICE_PAP , PAP_DOWN ); |
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105 } /* pap_init() */ |
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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 +------------------------------------------------------------------------------ |
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111 | Function : pap_fill_out_packet |
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112 +------------------------------------------------------------------------------ |
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113 | Description : The function pap_fill_out_packet() puts a PAP packet into |
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114 | the protocol configuration list |
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115 | |
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116 | Parameters : pco_buf - pco list buffer |
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117 | ptr_pos - position where to write the PAP packet, this value |
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118 | must get back to the calling funtion |
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119 | |
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120 +------------------------------------------------------------------------------ |
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121 */ |
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122 GLOBAL void pap_fill_out_packet (UBYTE pco_buf[], USHORT* ptr_pos) |
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123 { |
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124 USHORT pos; |
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125 |
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126 TRACE_FUNCTION( "pap_fill_out_packet" ); |
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127 |
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128 pos = *ptr_pos; |
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129 |
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130 /* |
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131 * copy stored authentication request packet |
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132 */ |
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133 /* |
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134 * Protocol ID |
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135 */ |
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136 pco_buf[pos] = PROTOCOL_PAP_MSB; |
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137 pos++; |
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138 pco_buf[pos] = PROTOCOL_PAP_LSB; |
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139 pos++; |
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140 /* |
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141 * Length of Protocol contents |
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142 */ |
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143 pco_buf[pos] = (UBYTE)ppp_data->pap.ar_packet->len; |
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144 pos++; |
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145 /* |
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146 * copy packet |
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147 */ |
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148 memcpy(&pco_buf[pos], |
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149 ppp_data->pap.ar_packet->buffer, |
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150 ppp_data->pap.ar_packet->len); |
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151 pos+= ppp_data->pap.ar_packet->len; |
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152 /* |
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153 * return new position |
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154 */ |
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155 *ptr_pos = pos; |
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156 } /* pap_fill_out_packet() */ |
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157 |
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158 |
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159 |
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160 /* |
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161 +------------------------------------------------------------------------------ |
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162 | Function : pap_get_sar |
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163 +------------------------------------------------------------------------------ |
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164 | Description : The function pap_get_sar() returns a PAP Authenticate Request |
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165 | packet. |
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166 | |
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167 | Parameters : ptr_packet - returns the Authenticate Request packet |
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168 | THE MEMORY FOR THE PACKET WILL BE ALLOCATED BY |
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169 | THIS FUNCTION |
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170 | |
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171 +------------------------------------------------------------------------------ |
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172 */ |
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173 GLOBAL void pap_get_sar (T_desc2** ptr_packet) |
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174 { |
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175 T_desc2* ret_desc; |
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176 USHORT len_pos; |
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177 USHORT pos; |
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178 UBYTE i; |
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179 |
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180 TRACE_FUNCTION( "pap_get_sar" ); |
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181 |
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182 /* |
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183 * Allocate the necessary size for the data descriptor. The size is |
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184 * calculated as follows: |
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185 * - take the size of a descriptor structure |
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186 * - subtract one because of the array buffer[1] to get the size of |
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187 * descriptor control information |
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188 * - add number of octets of descriptor data |
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189 */ |
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190 MALLOC (ret_desc, (USHORT)(sizeof(T_desc2) - 1 + |
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191 5 + /* |
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192 * 1 octet code field |
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193 * 1 octet identifier field |
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194 * 2 octets packet length field |
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195 * 1 octet peer id length field |
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196 */ |
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197 ppp_data->login.name_len + |
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198 1 + /* size of password length field */ |
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199 ppp_data->login.password_len)); |
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200 /* |
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201 * fill the packet |
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202 */ |
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203 ret_desc->next = (ULONG)NULL; |
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204 pos = 0; |
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205 /* |
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206 * Code field |
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207 */ |
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208 ret_desc->buffer[pos] = CODE_AUTH_REQ; |
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209 pos++; |
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210 /* |
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211 * Identifier field |
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212 */ |
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213 ret_desc->buffer[pos] = ppp_data->pap.nari;/*lint !e415 (Warning -- access of out-of-bounds pointer)*/ |
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214 pos++; |
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215 /* |
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216 * Length field (store the position) |
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217 */ |
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218 len_pos = pos; |
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219 pos++; |
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220 pos++; |
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221 /* |
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222 * authentication: peer-id and passwort |
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223 */ |
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224 ret_desc->buffer[pos] = ppp_data->login.name_len;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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225 pos++; |
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226 for (i = 0; i < ppp_data->login.name_len; i++) |
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227 { |
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228 ret_desc->buffer[pos] = ppp_data->login.name[i];/*lint !e661 !e662 (Warning -- Possible access/creation of out-of-bounds pointer)*/ |
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229 pos++; |
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230 } |
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231 ret_desc->buffer[pos] = ppp_data->login.password_len;/*lint !e661 !e662 (Warning -- Possible access/creation of out-of-bounds pointer)*/ |
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232 pos++; |
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233 for (i = 0; i < ppp_data->login.password_len; i++) |
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234 { |
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235 ret_desc->buffer[pos] = ppp_data->login.password[i];/*lint !e661 !e662 (Warning -- Possible access/creation of out-of-bounds pointer)*/ |
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236 pos++; |
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237 } |
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238 /* |
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239 * insert packet length |
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240 */ |
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241 ret_desc->len = pos; |
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242 ret_desc->buffer[len_pos] = (UBYTE)(pos >> 8);/*lint !e661 !e662 (Warning -- Possible access/creation of out-of-bounds pointer)*/ |
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243 len_pos++; |
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244 ret_desc->buffer[len_pos] = (UBYTE)(pos & 0x00ff);/*lint !e661 !e662 (Warning -- Possible access/creation of out-of-bounds pointer)*/ |
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245 |
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246 /* |
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247 * return the created packet |
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248 */ |
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249 *ptr_packet = ret_desc; |
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250 } /* pap_get_sar() */ |
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251 |
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252 |
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253 |
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254 /* |
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255 +------------------------------------------------------------------------------ |
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256 | Function : pap_get_saa |
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257 +------------------------------------------------------------------------------ |
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258 | Description : The function pap_get_saa() returns a PAP Authenticate Ack |
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259 | packet. |
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260 | |
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261 | Parameters : ptr_packet - returns the Authenticate Ack packet |
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262 | THE MEMORY FOR THE PACKET WILL BE ALLOCATED BY |
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263 | THIS FUNCTION |
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264 | |
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265 +------------------------------------------------------------------------------ |
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266 */ |
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267 GLOBAL void pap_get_saa (T_desc2** ptr_packet) |
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268 { |
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269 T_desc2* packet; |
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270 USHORT pos; |
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271 |
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272 TRACE_FUNCTION( "pap_get_saa" ); |
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273 |
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274 /* |
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275 * Allocate the necessary size for the data descriptor. The size is |
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276 * calculated as follows: |
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277 * - take the size of a descriptor structure |
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278 * - subtract one because of the array buffer[1] to get the size of |
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279 * descriptor control information |
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280 * - add number of octets of descriptor data |
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281 */ |
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282 MALLOC (packet, (USHORT)(sizeof(T_desc2) - 1 + PAP_AUTH_ACK_LENGTH)); |
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283 packet->len = PAP_AUTH_ACK_LENGTH; |
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284 packet->next = (ULONG)NULL; |
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285 pos = 0; |
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286 /* |
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287 * code field |
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288 */ |
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289 packet->buffer[pos] = CODE_AUTH_ACK; |
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290 pos++; |
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291 /* |
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292 * identifier field |
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293 */ |
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294 packet->buffer[pos] = ppp_data->pap.nari;/*lint !e415 (Warning -- access of out-of-bounds pointer)*/ |
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295 pos++; |
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296 /* |
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297 * length field |
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298 */ |
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299 packet->buffer[pos] = 0;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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300 pos++; |
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301 packet->buffer[pos] = PAP_AUTH_ACK_LENGTH;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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302 pos++; |
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303 /* |
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304 * set Msg-Length field |
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305 */ |
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306 packet->buffer[pos] = 0;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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307 /* |
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308 * return the created packet |
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309 */ |
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310 *ptr_packet = packet; |
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311 } /* pap_get_saa() */ |
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312 |
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313 |
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314 |
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315 /* |
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316 +------------------------------------------------------------------------------ |
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317 | Function : pap_rar |
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318 +------------------------------------------------------------------------------ |
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319 | Description : The function pap_rar() checks whether the given |
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320 | Authenticate Request packet is valid and if so it returns |
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321 | FORWARD_RARP and an Authentication Ack packet. |
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322 | |
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323 | Parameters : ptr_packet - Authenticate Request packet |
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324 | forward - returns result of analysis |
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325 | |
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326 +------------------------------------------------------------------------------ |
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327 */ |
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328 GLOBAL void pap_rar (T_desc2** ptr_packet, UBYTE* forward) |
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329 { |
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330 T_desc2* packet; |
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331 USHORT packet_len; |
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332 USHORT pos; |
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333 |
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334 TRACE_FUNCTION( "pap_rar" ); |
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335 |
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336 /* |
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337 * this packet can only reveiced in server mode |
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338 */ |
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339 if(ppp_data->mode NEQ PPP_SERVER) |
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340 { |
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341 *forward = FORWARD_DISCARD; |
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342 return; |
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343 } |
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344 /* |
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345 * check correct length |
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346 */ |
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347 packet = *ptr_packet; |
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348 packet_len = packet->buffer[2];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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349 packet_len = packet_len << 8; |
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350 packet_len+= packet->buffer[3];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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351 if((packet_len < 6) || (packet_len > packet->len)) |
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352 { |
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353 *forward = FORWARD_DISCARD; |
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354 return; |
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355 } |
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356 |
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357 /* |
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358 * check consistence of length of packet and length of log on information |
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359 */ |
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360 pos = 4; |
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361 pos+= packet->buffer[pos];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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362 pos++; |
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363 pos+= packet->buffer[pos]; |
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364 pos++; |
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365 if(pos > packet_len) |
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366 { |
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367 *forward = FORWARD_DISCARD; |
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368 return; |
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369 } |
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370 |
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371 /* |
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372 * store authentication packet |
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373 */ |
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374 if(packet_len > PAP_AUTH_REQ_LENGTH_MAX) |
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375 { |
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376 /* |
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377 * create Authentication Nak |
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378 */ |
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379 /* |
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380 * change code field |
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381 */ |
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382 packet->buffer[0] = CODE_AUTH_NAK; |
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383 /* |
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384 * change length field |
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385 */ |
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386 packet->buffer[2] = 0;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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387 packet->buffer[3] = PAP_AUTH_NAK_LENGTH;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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388 packet->len = PAP_AUTH_NAK_LENGTH; |
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389 /* |
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390 * set Msg-Length field |
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391 */ |
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392 packet->buffer[4] = PAP_AUTH_NAK_TEXT_LENGTH;/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
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393 /* |
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394 * fill out Message |
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395 */ |
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396 memcpy(&packet->buffer[5], PAP_AUTH_NAK_TEXT, PAP_AUTH_NAK_TEXT_LENGTH);/*lint !e419 !e416 (Warning -- creation of out-of-bounds pointer, Apparent data overrun)*/ |
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397 /* |
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398 * set return values |
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|
399 */ |
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|
400 *forward = FORWARD_RARN; |
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401 *ptr_packet = packet; |
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402 return; |
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|
403 } |
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|
404 arb_discard_packet(ppp_data->pap.ar_packet); |
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|
405 ppp_data->pap.ar_packet = packet; |
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|
406 ppp_data->pap.nari = packet->buffer[1];/*lint !e415 (Warning -- access of out-of-bounds pointer)*/ |
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|
407 /* |
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|
408 * create Authenticate Ack packet and |
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|
409 * set return values |
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|
410 */ |
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|
411 pap_get_saa(ptr_packet); |
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412 *forward = FORWARD_RARP; |
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413 } /* pap_rar */ |
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|
414 |
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|
415 |
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|
416 |
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|
417 /* |
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|
418 +------------------------------------------------------------------------------ |
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419 | Function : pap_raa |
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|
420 +------------------------------------------------------------------------------ |
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421 | Description : The function pap_raa() checks whether the given |
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422 | Authenticate Ack packet is valid and if so it returns |
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423 | FORWARD_RAA. |
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424 | |
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425 | Parameters : packet - Authenticate Ack packet |
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426 | forward - returns result of analysis |
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|
427 | |
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|
428 +------------------------------------------------------------------------------ |
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|
429 */ |
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|
430 GLOBAL void pap_raa (T_desc2* packet, UBYTE* forward) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
431 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
432 USHORT packet_len; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
433 |
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parents:
diff
changeset
|
434 TRACE_FUNCTION( "pap_raa" ); |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
435 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
436 /* |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
437 * this packet can only reveiced in client mode |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
438 */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
439 if(ppp_data->mode NEQ PPP_CLIENT) |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
440 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
441 *forward = FORWARD_DISCARD; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
442 return; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
443 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
444 /* |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
445 * check correct length |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
446 */ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
447 packet_len = packet->buffer[2];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
448 packet_len = packet_len << 8; |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
449 packet_len+= packet->buffer[3];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
450 if((packet_len < 5) || (packet_len > packet->len)) |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
451 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
452 *forward = FORWARD_DISCARD; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
453 return; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
454 } |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
455 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
456 if(packet->buffer[1] NEQ ppp_data->pap.nari)/*lint !e415 (Warning -- access of out-of-bounds pointer)*/ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
457 { |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
458 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
459 * invalid packet |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
460 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
461 *forward = FORWARD_DISCARD; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
462 return; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
463 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
464 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
465 * acceptable packet |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
466 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
467 arb_discard_packet(packet); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
468 ppp_data->pap.nari++; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
469 *forward = FORWARD_RAA; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
470 } /* pap_raa */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
471 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
472 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
473 |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
474 /* |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
475 +------------------------------------------------------------------------------ |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
476 | Function : pap_ran |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
477 +------------------------------------------------------------------------------ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
478 | Description : The function pap_ran() checks whether the given |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
479 | Authenticate Nak packet is valid and if so it returns |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
480 | FORWARD_RAN. |
90eb61ecd093
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
481 | |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
482 | Parameters : packet - Authenticate Nak packet |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
483 | forward - returns result of analysis |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
484 | |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
485 +------------------------------------------------------------------------------ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
486 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
487 GLOBAL void pap_ran (T_desc2* packet, UBYTE* forward) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
488 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
489 USHORT packet_len; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
490 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
491 TRACE_FUNCTION( "pap_ran" ); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
492 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
493 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
494 * this packet can only reveiced in client mode |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
495 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
496 if(ppp_data->mode NEQ PPP_CLIENT) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
497 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
498 *forward = FORWARD_DISCARD; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
499 return; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
500 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
501 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
502 * check correct length |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
503 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
504 packet_len = packet->buffer[2];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
505 packet_len = packet_len << 8; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
506 packet_len+= packet->buffer[3];/*lint !e415 !e416 (Warning -- access/creation of out-of-bounds pointer)*/ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
507 if((packet_len < 5) || (packet_len > packet->len)) |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
508 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
509 *forward = FORWARD_DISCARD; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
510 return; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
511 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
512 |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
513 if(packet->buffer[1] NEQ ppp_data->pap.nari)/*lint !e415 (Warning -- access of out-of-bounds pointer)*/ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
514 { |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
515 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
516 * invalid packet |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
517 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
518 *forward = FORWARD_DISCARD; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
519 return; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
520 } |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
521 /* |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
522 * acceptable packet |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
523 */ |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
524 arb_discard_packet(packet); |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
525 *forward = FORWARD_RAN; |
90eb61ecd093
src/g23m-fad: initial import from TCS3.2/LoCosto
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
526 } /* pap_ran */ |