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Rev | Author | Line No. | Line |
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260 | hidnplayr | 1 | ; |
2 | ; ETH.INC |
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3 | ; |
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4 | ; made by hidnplayr (hidnplayr@gmail.com) for KolibriOS |
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5 | ; |
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6 | ; The given code before every macro is only a simple example |
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7 | ; |
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8 | ; |
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9 | ; HISTORY |
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10 | ; |
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11 | ; v1.0: 18 august 2006 original release |
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12 | ; v1.1: december 2006 bugfixes and improvements |
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13 | ; |
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14 | |||
15 | |||
16 | macro mov arg1,arg2 { |
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17 | if arg1 eq arg2 |
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18 | else |
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19 | mov arg1,arg2 |
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20 | end if |
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21 | } |
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22 | |||
23 | TCB_LISTEN = 1 |
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24 | TCB_SYN_SENT = 2 |
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25 | TCB_SYN_RECEIVED = 3 |
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26 | TCB_ESTABLISHED = 4 |
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27 | TCB_FIN_WAIT_1 = 5 |
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28 | TCB_FIN_WAIT_2 = 6 |
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29 | TCB_CLOSE_WAIT = 7 |
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30 | TCB_CLOSING = 8 |
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31 | TCB_LAST_ASK = 9 |
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32 | TCB_TIME_WAIT = 10 |
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33 | TCB_CLOSED = 11 |
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34 | |||
35 | PASSIVE = 0 |
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36 | ACTIVE = 1 |
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37 | |||
38 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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39 | |||
40 | ; eth.get_IP eax |
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41 | ; |
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42 | ; gets the current IP that is defined in Stack (return in eax in this example) |
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43 | macro eth.get_IP IP { |
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44 | mov ebx,1 |
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45 | mov eax,52 |
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46 | int 0x40 |
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47 | |||
48 | mov IP ,eax |
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49 | } |
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50 | |||
51 | ; eth.get_GATEWAY eax |
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52 | ; |
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53 | ; gets the current GATEWAY that is defined in Stack (return in eax in this example) |
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54 | macro eth.get_GATEWAY GATEWAY { |
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55 | mov ebx,9 |
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56 | mov eax,52 |
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57 | int 0x40 |
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58 | move GATEWAY ,eax |
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59 | } |
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60 | |||
61 | ; eth.get_SUBNET eax |
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62 | ; |
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63 | ; gets the current SUBNET that is defined in Stack (return in eax in this example) |
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64 | macro eth.get_SUBNET SUBNET { |
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65 | mov ebx,10 |
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66 | mov eax,52 |
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67 | int 0x40 |
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68 | mov SUBNET ,eax |
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69 | } |
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70 | |||
71 | ; eth.get_DNS eax |
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72 | ; |
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73 | ; gets the current DNS that is defined in Stack (return in eax in this example) |
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74 | macro eth.get_DNS DNS { |
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75 | mov ebx,13 |
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76 | mov eax,52 |
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77 | int 0x40 |
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78 | mov DNS ,eax |
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79 | } |
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80 | |||
81 | ; eth.set_IP eax |
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82 | ; |
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83 | ; set a new IP in stack (input in eax in this example) |
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84 | macro eth.set_IP IP { |
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85 | mov ecx,IP |
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86 | mov ebx,3 |
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87 | mov eax,52 |
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88 | int 0x40 |
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89 | } |
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90 | |||
91 | ; eth.set_GATEWAY eax |
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92 | ; |
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93 | ; set a new GATEWAY in stack (input in eax in this example) |
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94 | macro eth.set_GATEWAY GATEWAY { |
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95 | mov ecx,GATEWAY |
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96 | mov ebx,11 |
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97 | mov eax,52 |
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98 | int 0x40 |
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99 | } |
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100 | |||
101 | ; eth.set_SUBNET eax |
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102 | ; |
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103 | ; set a new SUBNET in stack (input in eax in this example) |
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104 | macro eth.set_SUBNET SUBNET { |
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105 | mov ecx,SUBNET |
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106 | mov ebx,12 |
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107 | mov eax,52 |
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108 | int 0x40 |
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109 | } |
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110 | |||
111 | ; eth.set_DNS eax |
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112 | ; |
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113 | ; set a new DNS in stack (input in eax in this example) |
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114 | macro eth.set_DNS DNS { |
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115 | mov ecx,DNS |
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116 | mov ebx,14 |
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117 | mov eax,52 |
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118 | int 0x40 |
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119 | } |
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120 | |||
121 | ; eth.open eax,80,ebx,[socket] |
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122 | ; |
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123 | ; open a socket on local port in eax to port 80 on server on ebx |
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124 | ; the socketnumber will be returned in [socket] (dword) |
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125 | macro eth.open_udp local,remote,ip,socket { |
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126 | mov ecx, local |
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127 | mov edx, remote |
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128 | mov esi, ip |
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129 | mov ebx, 0 |
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130 | mov eax, 53 |
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131 | int 0x40 |
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132 | |||
133 | mov socket,eax |
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134 | } |
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135 | |||
136 | ; eth.close [socket] |
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137 | ; |
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138 | ; closes socket on socketnumber [socket] |
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139 | macro eth.close_udp socket { |
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140 | mov ecx, socket |
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141 | mov ebx, 1 |
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142 | mov eax, 53 |
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143 | int 0x40 |
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144 | } |
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145 | |||
146 | ; eth.poll [socket],eax |
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147 | ; |
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148 | ; polls [socket] for data |
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149 | ; eax = 0 when there is data |
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150 | macro eth.poll socket { |
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151 | mov ecx, socket |
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152 | mov ebx, 2 |
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153 | mov eax, 53 |
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154 | int 0x40 |
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155 | } |
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156 | |||
157 | ; eth.read_byte [socket], bl |
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158 | ; |
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159 | ; reads a byte from the socket and returns in bl |
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160 | macro eth.read_byte socket, result { |
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161 | mov ecx, socket |
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162 | mov ebx, 3 |
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163 | mov eax, 53 |
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164 | int 0x40 |
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165 | |||
166 | mov result,bl |
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167 | } |
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168 | |||
169 | ; eth.read_byte [socket], bl |
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170 | ; |
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171 | ; reads a byte from the socket and returns in bl |
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172 | macro eth.read_packet socket, result { |
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173 | mov edx, result |
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174 | mov ecx, socket |
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175 | mov ebx, 10 |
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176 | mov eax, 53 |
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177 | int 0x40 |
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178 | } |
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179 | |||
180 | ; eth.write [socket],12,msg |
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181 | ; msg db 'hello world!' |
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182 | ; |
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183 | ; send message msg to socket |
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184 | macro eth.write_udp socket,length,msg,verify { |
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185 | mov ecx, socket |
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186 | mov edx, length |
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187 | mov esi, msg |
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188 | mov ebx, 4 |
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189 | mov eax, 53 |
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190 | int 0x40 |
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191 | |||
192 | if verify eq 1 |
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193 | call verifysend |
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194 | end if |
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195 | |||
196 | } |
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197 | |||
198 | verifysend: |
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199 | test eax,eax |
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200 | jnz @f |
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201 | ret |
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202 | @@: |
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203 | pusha |
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204 | mov eax,5 |
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205 | mov ebx,100 |
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206 | int 0x40 |
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207 | popa |
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208 | int 0x40 |
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209 | ret |
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210 | |||
211 | ; eth.open_tcp 80,80,eax,0,[socket] |
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212 | ; |
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213 | ; opens a tcp socket on port 80 to port 80 on IP eax with passive open |
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214 | ; returns socket number in eax |
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215 | macro eth.open_tcp local,remote,ip,passive,socket { |
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216 | |||
217 | mov ecx, local |
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218 | mov edx, remote |
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219 | mov esi, ip |
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220 | mov edi, passive ; 0 = PASSIVE open |
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221 | mov ebx, 5 |
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222 | mov eax, 53 |
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223 | int 0x40 |
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224 | |||
225 | mov socket,eax |
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226 | } |
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227 | |||
228 | ; eth.socket_status [socket],eax |
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229 | ; |
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230 | ; returns socket status in eax |
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231 | macro eth.socket_status socket,result { |
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232 | mov ecx, socket |
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233 | mov ebx, 6 |
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234 | mov eax, 53 |
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235 | int 0x40 |
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236 | |||
237 | mov result,eax |
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238 | } |
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239 | |||
240 | ; eth.write_tcp [socket],12,msg |
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241 | ; |
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242 | ; msg db 'hello world!' |
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243 | ; |
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244 | ; send message to TCP socket |
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245 | macro eth.write_tcp socket,length,msg,verify { |
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246 | mov ecx, socket |
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247 | mov edx, length |
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248 | mov esi, msg |
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249 | mov ebx, 7 |
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250 | mov eax, 53 |
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251 | int 0x40 |
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252 | |||
253 | if verify eq 1 |
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254 | call verifysend |
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255 | end if |
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256 | } |
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257 | |||
258 | ; eth.close_tcp [socket] |
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259 | ; |
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260 | ; closes tcp socket [socket] |
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261 | macro eth.close_tcp socket { |
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262 | mov ecx, socket |
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263 | mov ebx, 8 |
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264 | mov eax, 53 |
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265 | int 0x40 |
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266 | } |
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267 | |||
268 | ; eth.check_port 165,eax |
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269 | ; |
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270 | ; checks if port 165 is used |
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271 | ; return is 0 when port is free |
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272 | macro eth.check_port port,result { |
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273 | mov ecx, port |
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274 | mov ebx, 9 |
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275 | mov eax, 53 |
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276 | int 0x40 |
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277 | |||
278 | mov result,eax |
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279 | } |
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280 | |||
281 | ; eth.status eax |
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282 | ; |
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283 | ; returns socket status in eax |
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284 | macro eth.status status { |
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285 | mov ebx, 255 |
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286 | mov ecx, 6 |
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287 | mov eax, 53 |
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288 | int 0x40 |
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289 | |||
290 | mov status,eax |
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291 | } |
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292 | |||
293 | ; eth.search 165,edx |
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294 | ; |
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295 | ; searches a free local port starting from 166 (165 + 1 !) |
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296 | ; returns in edx |
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297 | macro eth.search_port port,result { |
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298 | mov edx,port |
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299 | @@: |
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300 | inc edx |
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301 | eth.check_port edx,eax |
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302 | cmp eax,0 |
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303 | je @r |
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304 | mov result,edx |
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305 | } |
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306 | |||
307 | |||
308 | |||
309 | ; eth.read_data [socket],buffer,512 |
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310 | ; buffer rb 512 |
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311 | ; socket dd ? |
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312 | ; |
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313 | ; reads data from socket into a buffer, stops when there is no more data or buffer is full. |
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314 | macro eth.read_data socket,dest,endptr,bufferl { |
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315 | local .getdata,.loop,.end |
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316 | mov eax, dest |
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317 | mov endptr, eax |
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318 | |||
319 | ; we have data - this will be the response |
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320 | .getdata: |
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321 | mov eax,endptr |
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322 | cmp eax,bufferl |
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323 | jg .end |
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324 | |||
325 | eth.read_byte socket,bl |
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326 | |||
327 | ; Store the data in the response buffer |
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328 | mov eax, endptr |
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329 | mov [eax], bl |
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330 | inc dword endptr |
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331 | |||
332 | eth.poll socket |
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333 | |||
334 | cmp eax,0 |
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335 | jne .getdata ; yes, so get it |
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336 | |||
337 | ; now we are going to wait 30 times 10 ms (300ms) |
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338 | |||
339 | mov edx,0 |
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340 | .loop: |
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341 | mov eax,5 |
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342 | mov ebx,1 |
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343 | int 0x40 |
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344 | |||
345 | eth.poll socket |
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346 | |||
347 | cmp eax, 0 |
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348 | jne .getdata ; yes, so get it |
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349 | |||
350 | inc edx |
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351 | cmp edx,100 |
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352 | jl .loop |
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353 | |||
354 | .end: |
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355 | |||
356 | } |
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357 | |||
358 | ; eth.wait_for_data [socket],60,abort |
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359 | ; eth.read_data .... |
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360 | ; abort: |
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361 | ; |
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362 | ; Waits for data with timeout |
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363 | |||
364 | macro eth.wait_for_data socket,TIMEOUT,abort { |
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365 | |||
366 | mov edx,TIMEOUT |
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367 | |||
368 | @@: |
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369 | eth.poll socket |
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370 | |||
371 | cmp eax,0 |
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372 | jne @f |
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373 | |||
374 | dec edx |
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375 | jz abort |
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376 | |||
377 | mov eax,5 ; wait here for event |
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378 | mov ebx,10 |
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379 | int 0x40 |
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380 | |||
381 | jmp @r |
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382 | @@: |
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383 | |||
384 | } |
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385 | |||
386 | |||
387 | ; The function 'resolve' resolves the address in edx and puts the resulting IP in eax. |
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388 | ; When the input is an IP-adress, the function will output this IP in eax. |
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389 | ; If something goes wrong, the result in eax should be 0 |
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390 | ; |
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391 | ; example: |
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392 | ; |
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393 | ; resolve query1,IP,PORT |
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394 | ; resolve '192.168.0.1',IP,PORT |
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395 | ; resolve query2,IP,PORT |
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396 | ; |
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397 | ; query1 db 'www.google.com',0 |
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398 | ; query2 db '49.78.84.45',0 |
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399 | ; IP dd ? |
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400 | ; PORT dd ? |
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401 | |||
402 | macro resolve query,result { |
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403 | |||
404 | if query eqtype 0 |
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405 | mov edx,query |
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406 | else |
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407 | local ..string, ..label |
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408 | jmp ..label |
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409 | ..string db query,0 |
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410 | ..label: |
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411 | mov edx,..string |
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412 | end if |
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413 | |||
414 | call __resolve |
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415 | |||
416 | mov result,eax |
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417 | |||
418 | } |
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419 | |||
420 | if used __resolve |
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421 | |||
422 | __resolve: |
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423 | |||
424 | if __DEBUG__ eq 1 |
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425 | DEBUGF 1,'Resolving started\n' |
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426 | end if |
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427 | |||
428 | ; This code validates if the query is an IP containing 4 numbers and 3 dots |
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429 | |||
430 | |||
431 | push edx ; push edx (query address) onto stack |
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432 | xor al, al ; make al (dot count) zero |
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433 | |||
434 | @@: |
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435 | cmp byte[edx],'0' ; check if this byte is a number, if not jump to no_IP |
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436 | jl no_IP ; |
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437 | cmp byte[edx],'9' ; |
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438 | jg no_IP ; |
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439 | |||
440 | inc edx ; the byte was a number, so lets check the next byte |
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441 | |||
442 | cmp byte[edx],0 ; is this byte zero? (have we reached end of query?) |
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443 | jz @f ; jump to next @@ then |
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444 | cmp byte[edx],':' |
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445 | jz @f |
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446 | |||
447 | cmp byte[edx],'.' ; is this byte a dot? |
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448 | jne @r ; if not, jump to previous @@ |
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449 | |||
450 | inc al ; the byte was a dot so increment al(dot count) |
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451 | inc edx ; next byte |
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452 | jmp @r ; lets check for numbers again (jump to previous @@) |
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453 | |||
454 | @@: ; we reach this when end of query reached |
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455 | cmp al,3 ; check if there where 3 dots |
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456 | jnz no_IP ; if not, jump to no_IP (this is where the DNS will take over) |
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457 | |||
458 | ; The following code will convert this IP into a dword and output it in eax |
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459 | ; If there is also a port number specified, this will be returned in ebx, otherwise ebx is -1 |
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460 | |||
461 | pop esi ; edx (query address) was pushed onto stack and is now popped in esi |
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462 | |||
463 | xor edx, edx ; result |
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464 | xor eax, eax ; current character |
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465 | xor ebx, ebx ; current byte |
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466 | |||
467 | .outer_loop: |
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468 | shl edx, 8 |
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469 | add edx, ebx |
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470 | xor ebx, ebx |
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471 | .inner_loop: |
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472 | lodsb |
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473 | test eax, eax |
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474 | jz .finish |
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475 | cmp al, '.' |
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476 | jz .outer_loop |
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477 | sub eax, '0' |
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478 | imul ebx, 10 |
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479 | add ebx, eax |
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480 | jmp .inner_loop |
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481 | .finish: |
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482 | shl edx, 8 |
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483 | add edx, ebx |
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484 | |||
485 | bswap edx ; we want little endian order |
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486 | mov eax, edx |
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487 | |||
488 | ret |
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489 | |||
490 | |||
491 | no_IP: |
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492 | |||
493 | pop edx |
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494 | |||
495 | ; The query is not an IP address, we will send the query to a DNS server and hope for answer ;) |
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496 | if __DEBUG__ eq 1 |
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497 | DEBUGF 1,'The query is no ip, Building request string from:%u\n',edx |
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498 | end if |
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499 | |||
500 | ; Build the request string |
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501 | mov eax, 0x00010100 |
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502 | mov [dnsMsg], eax |
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503 | mov eax, 0x00000100 |
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504 | mov [dnsMsg+4], eax |
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505 | mov eax, 0x00000000 |
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506 | mov [dnsMsg+8], eax |
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507 | |||
508 | ; domain name goes in at dnsMsg+12 |
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509 | mov esi, dnsMsg + 12 ; location of label length |
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510 | mov edi, dnsMsg + 13 ; label start |
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511 | mov ecx, 12 ; total string length so far |
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512 | |||
513 | td002: |
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514 | mov [esi], byte 0 |
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515 | inc ecx |
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516 | |||
517 | td0021: |
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518 | mov al, [edx] |
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519 | |||
520 | cmp al, 0 |
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521 | je td001 ; we have finished the string translation |
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522 | |||
523 | cmp al, '.' |
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524 | je td004 ; we have finished the label |
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525 | |||
526 | inc byte [esi] |
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527 | inc ecx |
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528 | mov [edi], al |
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529 | inc edi |
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530 | inc edx |
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531 | jmp td0021 |
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532 | |||
533 | td004: |
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534 | mov esi, edi |
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535 | inc edi |
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536 | inc edx |
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537 | jmp td002 |
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538 | |||
539 | ; write label len + label text |
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540 | td001: |
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541 | mov [edi], byte 0 |
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542 | inc ecx |
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543 | inc edi |
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544 | mov [edi], dword 0x01000100 |
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545 | add ecx, 4 |
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546 | |||
547 | mov [dnsMsgLen], ecx ; We'll need the length of the message when we send it |
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548 | ; Now, lets send this and wait for an answer |
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549 | |||
550 | eth.search_port 1024,edx ; Find a free port starting from 1025 and store in edx |
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551 | eth.get_DNS esi ; Read DNS IP from stack into esi |
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552 | eth.open_udp edx,53,esi,[socketNum] ; First, open socket |
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553 | if __DEBUG__ eq 1 |
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554 | DEBUGF 1,'Socket opened: %u (port %u)\n',[socketNum],ecx |
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555 | end if |
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556 | eth.write_udp [socketNum],[dnsMsgLen],dnsMsg ; Write to socket ( request DNS lookup ) |
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557 | if __DEBUG__ eq 1 |
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558 | DEBUGF 1,'Data written, length:%u offset:%u\n',[dnsMsgLen],dnsMsg |
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559 | DEBUGF 1,'Waiting for data: (timeout is %us)\n',TIMEOUT |
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560 | end if |
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561 | eth.wait_for_data [socketNum],TIMEOUT,abort ; Now, we wait for data from remote |
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562 | eth.read_data [socketNum],dnsMsg,[dnsMsgLen],dnsMsg+BUFFER ; Read the data into the buffer |
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563 | if __DEBUG__ eq 1 |
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564 | DEBUGF 1,'Data received, offset:%u buffer size:%u length:%u\n',dnsMsg,BUFFER,esi-dnsMsg |
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565 | end if |
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566 | eth.close_udp [socketNum] ; We're done, close the socket |
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567 | if __DEBUG__ eq 1 |
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568 | DEBUGF 1,'Closed Socket\n' |
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569 | end if |
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570 | |||
571 | ; Now parse the message to get the host IP. Man, this is complicated. It's described in RFC 1035 |
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572 | ; 1) Validate that we have an answer with > 0 responses |
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573 | ; 2) Find the answer record with TYPE 0001 ( host IP ) |
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574 | ; 3) Finally, copy the IP address to the display |
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575 | ; Note: The response is in dnsMsg, the end of the buffer is pointed to by [dnsMsgLen] |
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576 | |||
577 | mov esi, dnsMsg |
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578 | |||
579 | mov al, [esi+2] ; Is this a response to my question? |
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580 | and al, 0x80 |
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581 | cmp al, 0x80 |
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582 | jne abort |
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583 | if __DEBUG__ eq 1 |
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584 | DEBUGF 1,'It was a response to my question\n' |
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585 | end if |
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586 | |||
587 | mov al, [esi+3] ; Were there any errors? |
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588 | and al, 0x0F |
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589 | cmp al, 0x00 |
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590 | jne abort |
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591 | |||
592 | if __DEBUG__ eq 1 |
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593 | DEBUGF 1,'There were no errors\n' |
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594 | end if |
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595 | |||
596 | mov ax, [esi+6] ; Is there ( at least 1 ) answer? |
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597 | cmp ax, 0x00 |
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598 | je abort |
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599 | |||
600 | ; Header validated. Scan through and get my answer |
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601 | add esi, 12 ; Skip to the question field |
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602 | call skipName ; Skip through the question field |
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603 | add esi, 4 ; skip past the questions qtype, qclass |
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604 | |||
605 | ctr002z: |
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606 | ; Now at the answer. There may be several answers, find the right one ( TYPE = 0x0001 ) |
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607 | call skipName |
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608 | mov ax, [esi] |
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609 | cmp ax, 0x0100 ; Is this the IP address answer? |
||
610 | jne ctr002c |
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611 | add esi, 10 ; Yes! Point eax to the first byte of the IP address |
||
612 | mov eax,[esi] |
||
613 | |||
614 | ret |
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615 | |||
616 | |||
617 | ctr002c: ; Skip through the answer, move to the next |
||
618 | add esi, 8 |
||
619 | movzx eax, byte [esi+1] |
||
620 | mov ah, [esi] |
||
621 | add esi, eax |
||
622 | add esi, 2 |
||
623 | |||
624 | cmp esi, [dnsMsgLen] ; Have we reached the end of the msg? This is an error condition, should not happen |
||
625 | jl ctr002z ; Check next answer |
||
626 | |||
627 | abort: |
||
628 | if __DEBUG__ eq 1 |
||
629 | DEBUGF 1,'Something went wrong, aborting\n' |
||
630 | end if |
||
631 | xor eax,eax |
||
632 | |||
633 | ret |
||
634 | |||
635 | |||
636 | skipName: |
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637 | ; Increment esi to the first byte past the name field |
||
638 | ; Names may use compressed labels. Normally do. |
||
639 | ; RFC 1035 page 30 gives details |
||
640 | mov al, [esi] |
||
641 | cmp al, 0 |
||
642 | je sn_exit |
||
643 | and al, 0xc0 |
||
644 | cmp al, 0xc0 |
||
645 | je sn001 |
||
646 | |||
647 | movzx eax, byte [esi] |
||
648 | inc eax |
||
649 | add esi, eax |
||
650 | jmp skipName |
||
651 | |||
652 | sn001: |
||
653 | add esi, 2 ; A pointer is always at the end |
||
654 | ret |
||
655 | |||
656 | sn_exit: |
||
657 | inc esi |
||
658 | ret |
||
659 | |||
660 | dnsMsgLen: dd 0 |
||
661 | socketNum: dd 0xFFFF |
||
662 | |||
663 | if ~defined dnsMsg |
||
664 | dnsMsg: rb BUFFER |
||
665 | end if |
||
666 | |||
667 | end if |
||
668 |