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Rev | Author | Line No. | Line |
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3701 | hidnplayr | 1 | server_parser: |
2 | |||
3 | ; Commands are always 3 numbers and followed by a space |
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4 | ; If a server decides it needs multiline output, |
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5 | ; first lines will have a dash instead of space after numbers, |
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3789 | hidnplayr | 6 | ; thus they are simply ignored in this simple command parser. |
3701 | hidnplayr | 7 | |
4922 | ashmew2 | 8 | cmp dword[buf_cmd], "150 " |
4920 | hidnplayr | 9 | je data_loop |
3701 | hidnplayr | 10 | |
4922 | ashmew2 | 11 | cmp dword[buf_cmd], "220 " |
3701 | hidnplayr | 12 | je welcome |
13 | |||
4922 | ashmew2 | 14 | ; cmp dword[buf_cmd], "226 " |
3967 | hidnplayr | 15 | ; je transfer_ok |
3789 | hidnplayr | 16 | |
4922 | ashmew2 | 17 | cmp dword[buf_cmd], "227 " |
3701 | hidnplayr | 18 | je pasv_ok |
19 | |||
4922 | ashmew2 | 20 | cmp dword[buf_cmd], "230 " |
3701 | hidnplayr | 21 | je login_ok |
22 | |||
4922 | ashmew2 | 23 | ; cmp dword[buf_cmd], "250" |
3800 | hidnplayr | 24 | ; je op_ok |
3790 | hidnplayr | 25 | |
4922 | ashmew2 | 26 | cmp dword[buf_cmd], "331 " |
3701 | hidnplayr | 27 | je pass |
28 | |||
4922 | ashmew2 | 29 | ; cmp dword[buf_cmd], "421 " |
3789 | hidnplayr | 30 | ; je timeout |
3701 | hidnplayr | 31 | |
4922 | ashmew2 | 32 | cmp dword[buf_cmd], "503 " ; login first |
3818 | hidnplayr | 33 | je welcome |
34 | |||
4922 | ashmew2 | 35 | cmp dword[buf_cmd], "530 " ; password incorrect |
6394 | nisargshah | 36 | mov [use_params], 0 |
3789 | hidnplayr | 37 | je welcome |
3701 | hidnplayr | 38 | |
4922 | ashmew2 | 39 | cmp dword[buf_cmd], "550 " |
3800 | hidnplayr | 40 | je close_datacon |
41 | |||
4922 | ashmew2 | 42 | cmp byte[buf_cmd+3], "-" |
4729 | hidnplayr | 43 | je wait_for_servercommand |
3789 | hidnplayr | 44 | jmp wait_for_usercommand |
45 | |||
46 | |||
3701 | hidnplayr | 47 | welcome: |
48 | |||
49 | mov [status], STATUS_CONNECTED |
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3789 | hidnplayr | 50 | jmp wait_for_usercommand |
3701 | hidnplayr | 51 | |
52 | |||
53 | pass: |
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54 | |||
55 | mov [status], STATUS_NEEDPASSWORD |
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3789 | hidnplayr | 56 | jmp wait_for_usercommand |
3701 | hidnplayr | 57 | |
58 | |||
59 | login_ok: |
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60 | |||
61 | mov [status], STATUS_LOGGED_IN |
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6394 | nisargshah | 62 | cmp [use_params], 0 |
63 | je wait_for_usercommand |
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3701 | hidnplayr | 64 | |
6394 | nisargshah | 65 | cmp [param_path+4], 0 |
66 | je wait_for_usercommand |
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67 | ; copy path to buf_cmd and execute CWD |
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68 | mov edi, buf_cmd |
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69 | mov esi, param_path |
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70 | @@: |
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71 | lodsb |
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72 | stosb |
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73 | cmp byte[esi-1], 0 |
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74 | jne @b |
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75 | jmp cmd_cwd |
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3701 | hidnplayr | 76 | |
77 | pasv_ok: |
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78 | |||
3818 | hidnplayr | 79 | sub ecx, 4 |
3701 | hidnplayr | 80 | jb .fail |
81 | mov al, "(" |
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4922 | ashmew2 | 82 | mov edi, buf_cmd + 4 |
3701 | hidnplayr | 83 | repne scasb |
84 | |||
85 | mcall socket, AF_INET4, SOCK_STREAM, 0 |
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86 | cmp eax, -1 |
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3813 | hidnplayr | 87 | je error_socket |
3701 | hidnplayr | 88 | mov [datasocket], eax |
89 | |||
90 | mov esi, edi |
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91 | call ascii_dec |
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92 | mov byte[sockaddr2.ip+0], bl |
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93 | call ascii_dec |
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94 | mov byte[sockaddr2.ip+1], bl |
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95 | call ascii_dec |
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96 | mov byte[sockaddr2.ip+2], bl |
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97 | call ascii_dec |
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98 | mov byte[sockaddr2.ip+3], bl |
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99 | |||
100 | call ascii_dec |
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3789 | hidnplayr | 101 | mov byte[sockaddr2.port+0], bl |
102 | call ascii_dec |
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3701 | hidnplayr | 103 | mov byte[sockaddr2.port+1], bl |
104 | |||
3789 | hidnplayr | 105 | invoke con_write_asciiz, str_open |
3701 | hidnplayr | 106 | mcall connect, [datasocket], sockaddr2, 18 |
5011 | hidnplayr | 107 | cmp eax, -1 |
108 | je error_socket |
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3818 | hidnplayr | 109 | jmp wait_for_servercommand |
3701 | hidnplayr | 110 | |
111 | .fail: |
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3818 | hidnplayr | 112 | invoke con_write_asciiz, str_unknown |
3789 | hidnplayr | 113 | jmp wait_for_servercommand |
3701 | hidnplayr | 114 | |
115 | |||
4920 | hidnplayr | 116 | data_loop: |
3701 | hidnplayr | 117 | |
4922 | ashmew2 | 118 | invoke con_write_asciiz, str_dot |
3967 | hidnplayr | 119 | |
3800 | hidnplayr | 120 | cmp [operation], OPERATION_STOR |
121 | je .stor |
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122 | |||
123 | ; we are receiving data |
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4922 | ashmew2 | 124 | mcall recv, [datasocket], buf_buffer2, BUFFERSIZE, 0 |
3792 | hidnplayr | 125 | test ebx, ebx |
3800 | hidnplayr | 126 | jnz .done |
4922 | ashmew2 | 127 | mov byte[buf_buffer2 + eax], 0 |
3701 | hidnplayr | 128 | |
3800 | hidnplayr | 129 | cmp [operation], OPERATION_RETR |
130 | je .retr |
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131 | |||
5011 | hidnplayr | 132 | cmp [operation], OPERATION_RDIR |
133 | je .rdir |
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134 | |||
3800 | hidnplayr | 135 | ; not retreiving, just print to console |
4922 | ashmew2 | 136 | invoke con_write_asciiz, buf_buffer2 |
4920 | hidnplayr | 137 | jmp data_loop |
3789 | hidnplayr | 138 | |
3800 | hidnplayr | 139 | ; retreiving, save to file |
140 | .retr: |
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4922 | ashmew2 | 141 | mov [filestruct.ptr], buf_buffer2 |
3800 | hidnplayr | 142 | mov [filestruct.size], eax |
143 | push eax |
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144 | mcall 70, filestruct |
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145 | pop eax |
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146 | add [filestruct.offset], eax |
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4920 | hidnplayr | 147 | jmp data_loop |
3792 | hidnplayr | 148 | |
3800 | hidnplayr | 149 | ; storing, send all data |
150 | .stor: |
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151 | mcall 70, filestruct |
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152 | cmp eax, 6 ; end of file |
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153 | je .last_call |
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154 | test eax, eax ; error |
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155 | ; jne .fileerror |
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156 | add [filestruct.offset], ebx |
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157 | mov esi, ebx |
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4922 | ashmew2 | 158 | mcall send, [datasocket], buf_buffer2, , 0 |
3800 | hidnplayr | 159 | jmp .stor |
160 | |||
161 | .last_call: |
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162 | mov esi, ebx |
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4922 | ashmew2 | 163 | mcall send, [datasocket], buf_buffer2, , 0 |
3800 | hidnplayr | 164 | |
165 | .done: |
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3967 | hidnplayr | 166 | invoke con_write_asciiz, str_close |
3789 | hidnplayr | 167 | mcall close, [datasocket] |
4920 | hidnplayr | 168 | mov [operation], OPERATION_NONE |
3789 | hidnplayr | 169 | jmp wait_for_servercommand |
3701 | hidnplayr | 170 | |
4922 | ashmew2 | 171 | .rdir: |
5011 | hidnplayr | 172 | ; alloc/realloc memory block to store filenames |
173 | mov ecx, eax ; eax is size of buffer received |
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174 | inc ecx |
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175 | add ecx, [size_fname] ; added old size to form new required size |
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176 | mcall 68, 20, , [ptr_fname] ; realloc |
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177 | test eax, eax |
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178 | je error_heap |
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179 | mov [ptr_fname], eax ; eax contains the new block now |
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180 | mov [ptr_queue], eax |
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4922 | ashmew2 | 181 | |
5011 | hidnplayr | 182 | ; copy filenames into fname buffer |
183 | mov esi, buf_buffer2 |
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184 | mov edi, eax |
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185 | add edi, [size_fname] |
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4922 | ashmew2 | 186 | .copy_buf: |
5011 | hidnplayr | 187 | lodsb |
188 | cmp al, 13 ; ignore any carriage return character |
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189 | je .copy_buf |
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190 | stosb |
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191 | cmp al, 10 ; linefeed marks end of filename |
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192 | je @f |
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193 | inc [queued] |
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194 | @@: |
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195 | test al, al ; 0 marks end of buffer |
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196 | jne .copy_buf |
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4922 | ashmew2 | 197 | |
5011 | hidnplayr | 198 | ; All received filenames have been copied, calculate new size of fname buffer |
199 | dec edi ; dont count the trailing 0 byte |
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200 | sub edi, [ptr_fname] |
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201 | mov [size_fname], edi |
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202 | jmp data_loop |
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4922 | ashmew2 | 203 | |
204 | |||
3800 | hidnplayr | 205 | close_datacon: |
4920 | hidnplayr | 206 | cmp [operation], OPERATION_NONE |
207 | je wait_for_usercommand |
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3967 | hidnplayr | 208 | invoke con_write_asciiz, str_close |
3800 | hidnplayr | 209 | mcall close, [datasocket] |
210 | jmp wait_for_usercommand |
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211 | |||
212 | |||
3701 | hidnplayr | 213 | ascii_dec: |
214 | |||
215 | xor ebx, ebx |
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3789 | hidnplayr | 216 | mov cl, 4 ; max length is 3 digits + 1 separator |
3701 | hidnplayr | 217 | .loop: |
218 | lodsb |
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219 | sub al, '0' |
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220 | jb .done |
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221 | cmp al, 9 |
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222 | ja .done |
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3789 | hidnplayr | 223 | lea ebx, [ebx*4+ebx] ; ebx *5 |
224 | shl ebx, 1 ; ebx *2 |
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3701 | hidnplayr | 225 | add bl, al |
226 | dec cl |
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227 | jnz .loop |
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228 | |||
229 | .done: |
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230 | ret |