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1 /** |
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2 * Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * PASV command answer parser |
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16 * Author: Philippe Gabriel |
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17 * RFC 959 defines the syntax for answer to the PASV command |
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18 * We must parse an IP+Port number (decimal, big endian) |
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19 * (ip1,ip2,ip3,ip4,ip5,port1,port2) |
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20 * We parse these regular expressions using an FSM |
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21 * Use: |
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22 * TFtpPASVAnswerParser::Reset |
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23 * to Reset the parser before we begin to parse a new answer |
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24 * TFtpPASVAnswerParser::Parse |
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25 * to parse an answer |
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26 * returns: |
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27 * TRUE: we parsed an answer (answer might be correct or inccorect) |
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28 * FALSE: An answer has not been completely parsed yet |
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29 * TFtpPASVAnswerParser::Fetch |
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30 * Fetch an answer |
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31 * returns: |
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32 * TRUE: We got a valid answer |
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33 * FALSE: The answer we got had an invalid syntax |
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34 * |
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35 * |
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36 */ |
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37 |
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38 |
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39 |
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40 /** |
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41 @file PASVANS.H |
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42 @internalComponent |
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43 */ |
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44 |
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45 #if !defined(__PASVANS_H__) |
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46 #define __PASVANS_H__ |
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47 #include <e32base.h> |
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48 #include <in_sock.h> |
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49 |
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50 ////////////////////////////////////////////////////////////// |
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51 // Definitions |
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52 ////////////////////////////////////////////////////////////// |
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53 |
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54 class TFtpPASVAnswerParser |
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55 /** |
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56 @internalComponent |
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57 */ |
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58 { |
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59 |
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60 public: |
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61 enum TState |
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62 { |
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63 /** Do some clever encoding here |
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64 */ |
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65 EIdle=0, |
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66 /** to simplify parsing code |
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67 */ |
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68 EBeginParse=1, |
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69 EParsing=2, |
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70 ESuccess,EFailed |
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71 }; |
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72 |
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73 TFtpPASVAnswerParser(void){iState=EIdle;} |
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74 TBool Parse(const TDesC8&, const TInetAddr& aAddr); |
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75 TBool Fetch(TInetAddr& aFTPServerAddress); |
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76 void Reset(void); |
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77 private: |
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78 /** Helper to Parse() */ |
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79 TBool ParsePASV(const TDesC8&); |
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80 /** Helper to Parse() */ |
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81 TBool ParseEPSV(const TDesC8&); |
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82 /** The current state of the parser */ |
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83 TUint iState; |
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84 /** The parsed answer digits */ |
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85 TBuf<12> iDigit; |
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86 TInetAddr iFTPServerAddress; |
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87 TInt iNumberCounter; |
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88 }; |
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89 |
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90 #endif // __PASVANS_H__ |