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HTTP-Download (paritial get, Head, unbekannte Dateigröße,...

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HTTP-Download (paritial get, Head, unbekannte Dateigröße,...

Verfasst: 16.12.2004 20:42
von GPI
Erstmal: Warum nicht in "Code, Tipps und Tricks"? - Weil noch nicht vollständig getestet...

Was kann der Code:

Http-Dateien Downloaden und das umfangreich:
* In eine Datei und in Speicher (Dateiname dann bitte "")
* Nur einen Teil der Datei Downloaden (sofern von Server unterstützt).
* Funktioniert auch bei unbekannter Dateigröße. (sowohl HTTP 1.0 als auch chunked für HTTP1.1)
* Erkennen von Server-Disconnect.
* Paßwortgeschützer bereich (nur BASE-Authorization. Mehr kann bsw. Opera auch nicht)
* Über Proxy.
* Eine Progressbar ist möglich
* Abbruch während des downloads

Für ausgiebige Test wäre ich dankbar

Code: Alles auswählen

;part of API_Filehandle

Structure API_FileHandle
  FHandle.l
  Buffer.l
  BufferLen.l
  ReadPos.l
  DataInBuffer.l
  readed.l
EndStructure

Procedure API_CloseFile(*File.API_FileHandle)
  If *File\FHandle<>#INVALID_HANDLE_VALUE
    CloseHandle_(*File\FHandle)
  EndIf
  If *File\Buffer
    FreeMemory(*File\Buffer):*File\Buffer=0
  EndIf
EndProcedure
Procedure API_FileCreate(*File.API_FileHandle,File$)
  *File\FHandle=CreateFile_(File$,#GENERIC_WRITE	,0,0,#CREATE_ALWAYS	,#FILE_ATTRIBUTE_NORMAL,0)
  If *File\FHandle=#INVALID_HANDLE_VALUE
    ProcedureReturn #False
  Else
    ProcedureReturn #True
  EndIf
EndProcedure
Procedure API_WriteData(*File.API_FileHandle,*Buffer,len)
  If WriteFile_(*File\FHandle,*Buffer,len,@written,0)
    ProcedureReturn written
  Else
    ProcedureReturn 0
  EndIf
EndProcedure

;Part of "new" math and string

Procedure HexVal(a$); - Convert a String in hexdecimal-format in numeric value
  a$=Trim(UCase(a$))
  If Asc(a$)='$'
    a$=Trim(Mid(a$,2,Len(a$)-1))
  EndIf
  Result=0
  *adr.BYTE=@a$
  For i=1 To Len(a$)
    Result<<4
    Select *adr\b
      Case '0'
      Case '1':Result+1
      Case '2':Result+2
      Case '3':Result+3
      Case '4':Result+4
      Case '5':Result+5
      Case '6':Result+6
      Case '7':Result+7
      Case '8':Result+8
      Case '9':Result+9
      Case 'A':Result+10
      Case 'B':Result+11
      Case 'C':Result+12
      Case 'D':Result+13
      Case 'E':Result+14
      Case 'F':Result+15
      Default:i=Len(a$)
    EndSelect
    *adr+1
  Next
  ProcedureReturn Result
EndProcedure

; HTTP

Structure HTTPGetId
  url$
  server$
  File$
  FileName$
  Port.l
  wenc$
  ProxyServer$
  ProxyPort.l
  penc$
  cookie$
  location$
  ConnectionID.l
  ErrorMessage$
  FileSize.l
  Date.l
  URLError.l
  Buffer.l
  BufferLength.l
  Realm$ 
  
  InHeader.l
  InChunk.l
  DoChunk.l
  ChunkRead.l
  
  FirstLine.l
  currentline$
  lastchar.l
  eol.l
  Received.l
  Typ$
  
  OutBuffer.l
  OutBufferLength.l
  
  StartPart.l
  EndPart.l
  
  HTTPVer.l
  
  FileHandle.API_FileHandle
  ; used for detect disconnect
  wc.WNDCLASS
  WindowName.s
  WindowHandle.l
  Disconnect.l
EndStructure
#URLError_OK=200
#URLError_CantCreateFile=1
#URLError_OutOfMemory=2
#URLError_CantGetPartial=3
#URLError_WrongPartialSize=4


;-URL-Commands
;{Day,Month
Dim wkday$(6)
Dim weekday$(6)
Dim Month$(12)
wkday$(1)="MON" 
wkday$(2)="TUE" 
wkday$(3)="WED"
wkday$(4)="THU" 
wkday$(5)="FRI"
wkday$(6)="SAT"
wkday$(0)="SUN"
weekday$(1)="MONDAY"
weekday$(2)="TUESDAY"
weekday$(3)="WEDNESDAY"
weekday$(4)="THURSDAY"
weekday$(5)="FRIDAY"
weekday$(6)="SATURDAY"
weekday$(0)="SUNDAY"
Month$(1)="JAN"
Month$(2)="FEB"
Month$(3)="MAR"
Month$(4)="APR"
Month$(5)="MAY"
Month$(6)="JUN"
Month$(7)="JUL"
Month$(8)="AUG"
Month$(9)="SEP"
Month$(10)="OCT"
Month$(11)="NOV"
Month$(12)="DEC"
;}
Procedure.s HTTP_CreateDate(Date); - Create a HTTP-String of the date
  ProcedureReturn FormatDate(wkday$(DayOfWeek(Date))+" %dd "+Month$(Month(Date))+" %yyyy %hh:%ii:%ss GMT",Date)
EndProcedure
Procedure HTTP_AnalyseDate(TestTime$); - Convert the HTTP-String to date
  TestTime$=ReplaceString(Trim(UCase(TestTime$)),"  "," ")
  Day=0:Month$="":Year=0:Time$=""
  For i=0 To 6
    If Left(TestTime$,4)=wkday$(i)+","                        ;{"rfc1123-Date"
      Day=Val(StringField(TestTime$,2," "))
      Month$=StringField(TestTime$,3," ")
      Year=Val(StringField(TestTime$,4," "))
      Time$=StringField(TestTime$,5," ")
      Break
      ;}
    ElseIf Left(TestTime$,Len(weekday$(i))+1)=weekday$(i)+"," ;{"rfc850-Date"
      SubTime$=StringField(TestTime$,2," ")
      Day=Val(StringField(SubTime$,1,"-"))
      Month$=StringField(SubTime$,2,"-")
      Year=Val(StringField(SubTime$,3,"-"))
      If Year>80:Year+1900:Else:Year+2000:EndIf
      Time$=StringField(TestTime$,3," ")
      Break
      ;}
    ElseIf Left(TestTime$,4)=wkday$(i)+" "                    ;{"asctime-Date"
      Day=Val(StringField(TestTime$,3," "))
      Month$=StringField(TestTime$,2," ")
      Year=Val(StringField(TestTime$,5," "))
      Time$=StringField(TestTime$,4," ") 
      Break
      ;}
    EndIf
  Next
  For i=1 To 12
    If Month$(i)=Month$ : Month=i:Break : EndIf
  Next
  Date=ParseDate("%hh:%ii:%ss",Time$)
  Hour=Hour(Date)
  Min=Minute(Date)
  Sec=Second(Date)
  ProcedureReturn Date(Year,Month,Day,Hour,Min,Sec)
EndProcedure  
Procedure.s HTTP_CryptedUserPass(user$,pass$); - Create the authorization string
  If user$
    conc$=user$+":"+pass$ 
    OutputBuffer = AllocateMemory(Len(conc$)*2) 
    Base64Encoder(conc$,Len(conc$),OutputBuffer,Len(conc$)*2) 
    penc$=PeekS(OutputBuffer) 
    FreeMemory(OutputBuffer)
  Else
    penc$=""
  EndIf
  ProcedureReturn penc$
EndProcedure

Declare HTTP_ReConnect(*Handle.HTTPGetId)
Declare HTTP_ChangeURL(*Handle.HTTPGetId,url$)
Declare HTTP_CloseURL(*Handle.HTTPGetId)

;internal
Procedure.s HTTP_CreateRequestString(*Handle.HTTPGetId); - internal use
  If *Handle\ProxyServer$
    com$=UCase(*Handle\Typ$)+" "+*Handle\url$+" HTTP/1.1"+#CRLF$
  Else
    com$=UCase(*Handle\Typ$)+" "+*Handle\File$+" HTTP/1.1"+#CRLF$
  EndIf
  com$+"Host: "+*Handle\server$+#CRLF$
  com$+"Accept: */*"+#CRLF$
  
  com$+"User-Agent: PBGPIHTTPs"+#CRLF$
  If *Handle\ProxyServer$<>"" And *Handle\penc$
    com$+"Proxy-Authorization: Basic "+*Handle\penc$+#CRLF$
  EndIf
  If *Handle\wenc$<>""
    com$+"Authorization: Basic "+*Handle\wenc$+#CRLF$
  EndIf
  If *Handle\cookie$<>""
    com$+"Cookie: "+*Handle\cookie$+#CRLF$
  EndIf
  ; If *Handle\location$<>""
  ; com$+"Location: "+*Handle\location$+#CRLF$
  ; EndIf
  If *Handle\StartPart Or *Handle\EndPart
    com$+"Range: bytes="+Str(*Handle\StartPart)+"-"+Str(*Handle\EndPart)+#CRLF$
  EndIf
  ;com$+"Transfer-Encoding: chunked"+#crlf$
  ;com$+"Accept-Encoding: chunked"+#crlf$
  com$+#CRLF$
  ProcedureReturn com$
EndProcedure
Procedure HTTP_WindowCallback_(hwnd,msg,wParam,lParam); - internal use
  *Handle.HTTPGetId=GetWindowLong_(hwnd,#GWL_UserData)
  If *Handle
    If msg=#WM_LBUTTONDBLCLK
      *Handle\Disconnect=#True
      ProcedureReturn #False
    EndIf
  EndIf
  If msg=#WM_CLOSE Or msg=#WM_DESTROY
    UnregisterClass_(*Handle\WindowName,*Handle\wc\hInstance) 
  EndIf 
  ProcedureReturn DefWindowProc_(hwnd, msg, wParam, lParam)
EndProcedure
Procedure HTTP_NetworkConnect_(*Handle.HTTPGetId,ServerName.s,Port); - internal use 
  Result=#False
  ConnectionID=OpenNetworkConnection(ServerName,Port)
  If ConnectionID
    
    *Handle\WindowName="httpGPI"+Str(ConnectionID)
    *Handle\wc\lpfnWndProc    =  @HTTP_WindowCallback_() 
    *Handle\wc\hInstance      =  GetModuleHandle_(0)
    *Handle\wc\lpszClassName  =  @*Handle\WindowName
    If RegisterClass_(*Handle\wc) 
      *Handle\WindowHandle=CreateWindowEx_(0,*Handle\WindowName,"",0,#CW_USEDEFAULT,0,#CW_USEDEFAULT,0,0,0,*Handle\wc\hInstance ,0) 
      If *Handle\WindowHandle
        SetWindowLong_(*Handle\WindowHandle,#GWL_UserData,*Handle)
        *Handle\Disconnect=#False
        If WSAAsyncSelect_(ConnectionID, *Handle\WindowHandle, #WM_LBUTTONDBLCLK, #FD_CLOSE) = #SOCKET_ERROR ; If this happened we'll now know when an server unexpectedly die on us 
          err.l = WSAGetLastError_() ; This line should be here even if we don't act on the result. 
        EndIf
        Result=#True
      Else
        UnregisterClass_(*Handle\WindowName,*Handle\wc\hInstance)
      EndIf
    EndIf
    
    If Result=#False
      CloseNetworkConnection(ConnectionID)
      ConnectionID=#False
    EndIf
  EndIf
  ProcedureReturn ConnectionID
EndProcedure 
Procedure HTTP_Disconnect_(*Handle.HTTPGetId,ConnectionID); - internal use
  CloseNetworkConnection(ConnectionID)
  DestroyWindow_(*Handle\WindowHandle)
EndProcedure
;Get Information
Procedure HTTP_IsHeaderReceived(*Handle.HTTPGetId); - Return is #true, when the header is complete received
  ProcedureReturn #True-*Handle\InHeader
EndProcedure
Procedure HTTP_GetProgress(*Handle.HTTPGetId); Header must be received! And the download size must be known.
  If *Handle\FileSize
    ProcedureReturn *Handle\Received*100/*Handle\FileSize
  EndIf
EndProcedure
Procedure HTTP_GetError(*Handle.HTTPGetId); Header must be received!
  ProcedureReturn *Handle\URLError
EndProcedure
Procedure.s HTTP_GetErrorMessage(*Handle.HTTPGetId); Header must be received!
  ProcedureReturn *Handle\ErrorMessage$
EndProcedure 
Procedure.s HTTP_GetNewLocation(*Handle.HTTPGetId); Header must be received!
  ProcedureReturn *Handle\location$
EndProcedure
Procedure.s HTTP_GetAuthenticateRealm(*Handle.HTTPGetId); Header must be received!
  ProcedureReturn *Handle\Realm$
EndProcedure
Procedure HTTP_GetFileSize(*Handle.HTTPGetId); Header must be received! And the download size must be known.
  ProcedureReturn *Handle\FileSize
EndProcedure
Procedure HTTP_GetFileReceived(*Handle.HTTPGetId); Return the current (and when ready: final) size of the download
  ProcedureReturn *Handle\Received
EndProcedure
Procedure HTTP_GetFileDate(*Handle.HTTPGetId); Header must be received!
  ProcedureReturn *Handle\Date
EndProcedure
Procedure HTTP_GetOutBuffer(*Handle.HTTPGetId); File must be downloaded with localfile$="". Please free the memory with FreeMemory(outbuffer)
  ProcedureReturn *Handle\OutBuffer
EndProcedure

;Change Settings
Procedure HTTP_ChangeURL(*Handle.HTTPGetId,url$); Change only the URL (for 3xx-Errors)
  ;Port finden
  s_start=FindString(url$,":",7)
  s_end=FindString(url$,"/",s_start)
  If s_start And s_end
    port$=Mid(url$,s_start+1,s_end-(s_start+1))
  EndIf
  ;Servername finden
  For a=1 To Len(url$)
    s_start=FindString(url$,"//",1)
    s_end=FindString(url$,"/",s_start+2)
    server$=Mid(url$,s_start+2,s_end-(s_start+2))
    If port$<>""
      server$=ReplaceString(server$,":"+port$,"",1)
    EndIf
  Next
  ;standard-Name
  If Port=0: Port=80 :EndIf
  ;Dateiname
  File$=ReplaceString(url$,"http://"+server$,"",1)
  
  *Handle\url$=url$
  *Handle\Port=Port
  *Handle\server$=server$
  *Handle\File$=File$
EndProcedure
Procedure HTTP_ChangeWWWAuthenticate(*Handle.HTTPGetId,wenc$); Change WWWAuthenticate for 401-error
  *Handle\wenc$=wenc$
EndProcedure
Procedure HTTP_ChangeProxyAuthenticate(*Handle.HTTPGetId,penc$); Change ProxyAuthenticate for 407-error
  *Handle\penc$=penc$
EndProcedure
;Commands
Procedure HTTP_Connect_(*Handle.HTTPGetId,LocalFile$,url$,wenc$,StartPart,EndPart,ProxyServer$,ProxyPort,penc$,BufferLength,Typ$); internal
  If BufferLength<=0: BufferLength=10240 :EndIf
  
  HTTP_ChangeURL(*Handle.HTTPGetId,url$)
  
  If ProxyPort=0: ProxyPort=3196 :EndIf
  
  If *Handle\OutBuffer
    FreeMemory(*Handle\OutBuffer)
    *Handle\OutBuffer=0
  EndIf 
  
  ;{ Infos speichern
  *Handle\FileName$=LocalFile$
  *Handle\wenc$=wenc$
  *Handle\ProxyServer$=ProxyServer$
  *Handle\ProxyPort=ProxyPort
  *Handle\penc$=penc$
  *Handle\cookie$=""
  *Handle\Buffer=0
  *Handle\BufferLength=BufferLength
  *Handle\Typ$=Typ$
  *Handle\StartPart=StartPart
  *Handle\EndPart=EndPart
  ;}
  
  ProcedureReturn HTTP_ReConnect(*Handle)
EndProcedure
Procedure HTTP_OpenURLPartial(*Handle.HTTPGetId,LocalFile$,url$,wenc$,StartPart,EndPart,ProxyServer$,ProxyPort,penc$,BufferLength); same as HTTP_OpenUrl(), but download only a part (not supported by all servers!)
  ProcedureReturn HTTP_Connect_(*Handle.HTTPGetId,LocalFile$,url$,wenc$,StartPart,EndPart,ProxyServer$,ProxyPort,penc$,BufferLength,"GET")
EndProcedure
Procedure HTTP_OpenUrl(*Handle.HTTPGetId,LocalFile$,url$,wenc$,ProxyServer$,ProxyPort,penc$,BufferLength);LocalFile$="" -> load in memory
  ProcedureReturn HTTP_Connect_(*Handle.HTTPGetId,LocalFile$,url$,wenc$,0,0,ProxyServer$,ProxyPort,penc$,BufferLength,"GET")
EndProcedure
Procedure HTTP_UrlInfo(*Handle.HTTPGetId,url$,wenc$,ProxyServer$,ProxyPort,penc$,BufferLength); read only the FileInformation (date and size)
  ProcedureReturn HTTP_Connect_(*Handle.HTTPGetId,"",url$,wenc$,0,0,ProxyServer$,ProxyPort,penc$,BufferLength,"HEAD")
EndProcedure
Procedure HTTP_ReConnect(*Handle.HTTPGetId); Usefull, when url is moved or authenticate is needed, reconnect
  HTTP_CloseURL(*Handle)
  If *Handle\OutBuffer
    FreeMemory(*Handle\OutBuffer)
    *Handle\OutBuffer=0
  EndIf 
  *Handle\location$=""
  *Handle\FileSize=0
  *Handle\Date=0
  *Handle\ErrorMessage$=""
  *Handle\InHeader=#True
  *Handle\FirstLine=#True
  *Handle\currentline$=""
  *Handle\lastchar=0
  *Handle\eol=0
  *Handle\URLError=0
  *Handle\HTTPVer=0
  *Handle\Realm$=""
  *Handle\Received=0
  *Handle\InChunk=0
  *Handle\DoChunk=0
  If *Handle\ProxyServer$<>""
    *Handle\ConnectionID = HTTP_NetworkConnect_(*Handle,*Handle\ProxyServer$, *Handle\ProxyPort)
  Else
    *Handle\ConnectionID = HTTP_NetworkConnect_(*Handle,*Handle\server$, *Handle\Port)
  EndIf
  
  If *Handle\ConnectionID
    com$=HTTP_CreateRequestString(*Handle)
    SendNetworkData(*Handle\ConnectionID,@com$,Len(com$))
    ProcedureReturn #True
  Else
    ProcedureReturn #False
  EndIf
EndProcedure
Procedure HTTP_CloseURL(*Handle.HTTPGetId); finish/cancel download. little note: this don't earse file-info (HTTP_GET*) and outbuffer!
  If *Handle\ConnectionID
    HTTP_Disconnect_(*Handle,*Handle\ConnectionID)
    *Handle\ConnectionID=#False
  EndIf
  If *Handle\Buffer
    FreeMemory(*Handle\Buffer)
    *Handle\Buffer=0
  EndIf
  API_CloseFile(*Handle\FileHandle)
EndProcedure
Procedure HTTP_ReceiveData(*Handle.HTTPGetId) ; #True=Not ready  #False=AllDatasRecived/Disconnect
  Result=#True
  NCEvent = NetworkClientEvent(*Handle\ConnectionID)
  If PeekMessage_(m.MSG, *Handle\WindowHandle, 0, 0,#PM_REMOVE) 
    TranslateMessage_(m) 
    DispatchMessage_(m)
  EndIf
  
  If NCEvent=2 ; Raw-data
    If *Handle\Buffer=0
      *Handle\Buffer=AllocateMemory(*Handle\BufferLength)
      If *Handle\Buffer=0
        *Handle\URLError=#URLError_OutOfMemory
        ProcedureReturn #False
      EndIf
    EndIf
    InBuffer=ReceiveNetworkData(*Handle\ConnectionID,*Handle\Buffer,*Handle\BufferLength)
    *start.BYTE=*Handle\Buffer
    Repeat
      
      If *Handle\InHeader ;{ Header analysieren
        While InBuffer
          char=(*start\b & $FF):InBuffer-1:*start+1
          Select char
            Case #CR;: #crlf$
            Case #LF
              If *Handle\lastchar=#CR; Ende der Zeile entdeckt!
                If *Handle\eol; zum zweiten mal -> nun daten
                  *Handle\InHeader=#False
                  ;{-Header eingelesen ->Auswerten
                  If *Handle\URLError=200 
                    If *Handle\StartPart<>0 Or *Handle\EndPart<>0
                      *Handle\URLError=#URLError_CantGetPartial
                      Result=#False
                      ;else ->Datei öffnen/Speicher reservieren
                    EndIf
                  ElseIf *Handle\URLError=206
                    If *Handle\FileSize=*Handle\EndPart-*Handle\StartPart+1
                      *Handle\URLError=200
                      ; ->Datei öffnen/Speicher reservieren
                    Else
                      *Handle\URLError=#URLError_WrongPartialSize
                      Result=#False
                    EndIf
                  Else 
                    Result=#False
                  EndIf
                  
                  ;Datei öffnen/Speicher reservieren
                  If *Handle\URLError=200
                    If ((*Handle\FileSize Or *Handle\DoChunk) Or (*Handle\HTTPVer=10 And *Handle\FileSize=0)) And *Handle\Typ$="GET"
                      If *Handle\DoChunk
                        *Handle\InChunk=1
                        *Handle\currentline$=""
                      EndIf
                      If *Handle\FileName$
                        ;{Datei
                        If API_FileCreate(*Handle\FileHandle,*Handle\FileName$)=#False
                          *Handle\URLError=#URLError_CantCreateFile
                          Result=#False
                        EndIf
                        ;}
                      Else
                        ;{Speicher
                        If *Handle\FileSize
                          *Handle\OutBufferLength=*Handle\FileSize
                        Else
                          *Handle\OutBufferLength=*Handle\Buffer*10
                        EndIf
                        *Handle\OutBuffer=AllocateMemory(*Handle\OutBufferLength)
                        If *Handle\OutBuffer=0
                          *Handle\URLError=#URLError_OutOfMemory
                          Result=#False
                        EndIf
                        ;}
                      EndIf
                    Else
                      Result=#False
                    EndIf
                  EndIf
                  
                  ;*Handle\FileSize+1000000;------
                  
                  ;}
                  Break
                Else
                  *Handle\eol=#True
                  If *Handle\FirstLine;{-Status-code auslesen
                    *Handle\FirstLine=#False
                    a1=FindString(*Handle\currentline$," ",0)
                    a2=FindString(*Handle\currentline$," ",a1+1):If a2=0:a2=Len(*Handle\currentline$)+1:EndIf
                    ;HTTP/1.0
                    *Handle\HTTPVer=Val(ReplaceString(Mid(*Handle\currentline$,a1-3,3),".",""))
                    *Handle\URLError=Val(Mid(*Handle\currentline$,a1+1,a2-a1-1))
                    *Handle\ErrorMessage$=Right(*Handle\currentline$,Len(*Handle\currentline$)-a2)
                    ;}
                  Else;{-Header-Zeile analysieren
                    a=FindString(*Handle\currentline$,":",1)
                    Variable$=Trim(Left(*Handle\currentline$,a-1))
                    Set$=Trim(Right(*Handle\currentline$,Len(*Handle\currentline$)-a))
                    Select UCase(Variable$)
                      Case "PROXY-AUTHENTICATE";{  Realm auslesen
                        a=FindString(Set$,"realm=",0)
                        b=FindString(Set$,#DQUOTE$,a+7)
                        If a And b
                          *Handle\Realm$=Mid(Set$,a+7,b-a-7)
                        EndIf
                        ;}
                      Case "WWW-AUTHENTICATE";{    Realm auslesen
                        a=FindString(Set$,"realm=",0)
                        b=FindString(Set$,#DQUOTE$,a+7)
                        If a And b
                          *Handle\Realm$=Mid(Set$,a+7,b-a-7)
                        EndIf
                        ;}
                      Case "LOCATION":            *Handle\location$=Set$
                      Case "SET-COOKIE";{          Cookie suchen
                        a=FindString(Set$,";",0):If a=0: a=Len(Set$)+1 :EndIf
                        *Handle\cookie$=Left(Set$,a-1)
                        ;}
                      Case "CONTENT-LENGTH":      *Handle\FileSize=Val(Set$)
                      Case "LAST-MODIFIED":       *Handle\Date=HTTP_AnalyseDate(Set$)
                      Case "TRANSFER-ENCODING";{   Chunked
                        If UCase(Set$)="CHUNKED"
                          *Handle\DoChunk=#True
                        EndIf
                        ;}
                    EndSelect    
                    ;}
                  EndIf
                  *Handle\currentline$=""
                EndIf
              EndIf
            Default
              *Handle\eol=#False
              *Handle\currentline$+Chr(char)
          EndSelect
          *Handle\lastchar=char
        Wend
        ;}
      EndIf
      If *Handle\InChunk>0 And *Handle\InHeader=#False And InBuffer
        While InBuffer
          char=(*start\b & $FF):InBuffer-1:*start+1
          Select char
            Case #CR;: #crlf$
            Case #LF
              If *Handle\lastchar=#CR; Ende der Zeile entdeckt!
                *Handle\InChunk-1
                If *Handle\InChunk=0
                  a=FindString(*Handle\currentline$,";",0)
                  If a
                    *Handle\currentline$=Left(*Handle\currentline$,a-1)
                  EndIf
                  *Handle\ChunkRead=HexVal(Trim(*Handle\currentline$))
                  *Handle\FileSize+*Handle\ChunkRead
                  
                  If *Handle\ChunkRead=0
                    InBuffer=0
                    If *Handle\FileName$
                      API_CloseFile(*Handle\FileHandle)
                    EndIf
                    Result=#False
                  EndIf
                  Break
                EndIf
                *Handle\currentline$=""
              EndIf 
            Default
              *Handle\eol=#False
              *Handle\currentline$+Chr(char)
          EndSelect
          *Handle\lastchar=char
        Wend
      EndIf 
      If *Handle\InChunk=0 And *Handle\InHeader=#False And InBuffer;{
        CopyData=InBuffer
        If *Handle\DoChunk
          If CopyData>*Handle\ChunkRead
            CopyData=*Handle\ChunkRead
          EndIf
          *Handle\ChunkRead-CopyData
          If *Handle\ChunkRead=0
            ;*Handle\ChunkRead=10000
            *Handle\InChunk=2
          EndIf
        EndIf
        InBuffer-CopyData
        If *Handle\FileName$
          *Handle\Received+CopyData
          API_WriteData(*Handle\FileHandle,*start,CopyData)
          *start+CopyData
          If *Handle\Received=*Handle\FileSize And *Handle\DoChunk=#False; And *Handle\HTTPVer=11
            Result=#False;fertig
            API_CloseFile(*Handle\FileHandle)
          EndIf
          ;}
        Else
          ;{Speicher
          need=*Handle\Received+CopyData
          If need>OutBufferLength 
            If *Handle\FileSize>=need
              *Handle\OutBufferLength=*Handle\FileSize
            Else
              *Handle\OutBufferLength=need+*Handle\Buffer*10
            EndIf
            *Handle\OutBuffer=ReAllocateMemory(*Handle\OutBuffer,*Handle\OutBufferLength)
            If *Handle\OutBuffer=0
              Result=#False
              URLError=#URLError_OutOfMemory
            EndIf
          EndIf
          If *Handle\OutBuffer
            CopyMemory(*start,*Handle\OutBuffer+*Handle\Received,CopyData)
            *Handle\Received+CopyData
            *start+CopyData
            If *Handle\Received=*Handle\FileSize And *Handle\DoChunk=#False; And *Handle\HTTPVer=11
              Result=#False;fertig
            EndIf 
          EndIf
          ;}
        EndIf
        
        
      EndIf
    Until InBuffer=0
  Else
    If *Handle\Disconnect
      If *Handle\FileName$
        API_CloseFile(*Handle\FileHandle)
      EndIf
      
      Result=#False
    EndIf
  EndIf
  
  ProcedureReturn Result
EndProcedure

CompilerIf #True
;- example

;url.s="http://shinji.chaosnet.org/phpinfo.php"
;url.s="http://shinji.chaosnet.org/phpinfo.php?=PHPE9568F35-D428-11d2-A769-00AA001ACF42"
;url.s="http://192.168.1.1/Crillion2/UniversalInternetUpdater.pack"
url.s="http://192.168.1.1/"
;url.s="http://www.sedtech.com/isedquickpdf/downloads/4.35/iSQP0435DLL.zip"
;url.s="http://gpihome.de/Crillion/English_asdfdafs_.txt"

;File$="C:\test.txt"
File$="c:\test.zip"

; ;Proxy required?
 ; ProxyServer$="192.168.1.1"
 ; ProxyPort=8080
; ProxyServer$="195.140.251.142"
; ProxyPort=8080
;ProxyPass$=CreateCryptedPass("user","pass")

; ;user and password required?
; WebPass$=CreateCryptedPass(user$,pass$)



If InitNetwork()
  
  OpenConsole()
  ; PrintN("***Getting file information***")
  ; If HTTP_UrlInfo(Info.HTTPGetId,url,WebPass$,ProxyServer$,ProxyPort,ProxyPass$,0)
  ; PrintN("connect...")
  ; While HTTP_ReceiveData(Info); wait for header
  ; Delay(100)
  ; Wend
  ; HTTP_CloseURL(Info)
  ; Select HTTP_GetError(Info)
  ; Case #URLError_OK
  ; PrintN("FileSize:"+Str(HTTP_GetFileSize(Info)))
  ; PrintN("FileDate:"+FormatDate("%dd.%mm.%yyyy %hh:%ii:%ss",HTTP_GetFileDate(Info)))
  ; Case #URLError_OutOfMemory:PrintN("Out of memory")
  ; Case #URLError_CantCreateFile:PrintN("Can't create file")
  ; ;for all other errors: See download
  ; Default
  ; PrintN(Str(HTTP_GetError(Info))+" "+HTTP_GetErrorMessage(Info))
  ; EndSelect
  ; EndIf
  
  
  PrintN("")
  PrintN("***Getting file***")
  If HTTP_OpenUrl(Get.HTTPGetId,File$,url,WebPass$,ProxyServer$,ProxyPort,ProxyPass$,0)
    Repeat
      PrintN("Connect...")
      ReTry=#False:Progress=0
      While HTTP_ReceiveData(Get)
        ;WindowEvent()
        a=HTTP_GetProgress(Get)
        If a<>Progress
          PrintN("Progress: "+Str(a)+"%")
          Progress=a
        EndIf
        ;if want abort
        ;  http_closeurl(get$)
        ;  printn("Abort")
        ;  break 2
        ;endif
        Delay(100)
      Wend
      HTTP_CloseURL(Get)
      
      Select HTTP_GetError(Get)
        Case #URLError_OK:PrintN("Download complete")
          ;{for memorydownload
          ; OutBuffer=HTTP_GetOutBuffer(Get)
          ; Size=HTTP_GetFileSize(Get)
          ; Print("save to "+File$+".mem."+GetExtensionPart(File$))
          ; API_FileCreate(out.API_FileHandle,File$+".mem."+GetExtensionPart(File$))
          ; API_WriteData(out,OutBuffer,Size)
          ; API_CloseFile(out)
          ; FreeMemory(outbuffer)
          ;}
           PrintN(" done") 
        Case #URLError_OutOfMemory:PrintN("Out of memory")
        Case #URLError_CantCreateFile:PrintN("Can't create file")
        Case 301;Moved permanently
          PrintN("Moved permanently:"+HTTP_GetNewLocation(Get))
          HTTP_ChangeURL(Get,HTTP_GetNewLocation(Get))
          If HTTP_ReConnect(Get); neu anfordern
            ReTry=#True
          Else
            PrintN("Can't connect")
          EndIf
        Case 302;Moved temporarily
          PrintN("Moved temporarily:"+HTTP_GetNewLocation(Get))
          HTTP_ChangeURL(Get,HTTP_GetNewLocation(Get))
          If HTTP_ReConnect(Get); neu anfordern
            ReTry=#True
          Else
            PrintN("Can't connect")
          EndIf
        Case 305;Use Proxy
          PrintN("Use Proxy:"+HTTP_GetNewLocation(Get))
        Case 401;unauthorized
          PrintN("Unauthorized:"+HTTP_GetAuthenticateRealm(Get))
          Print("  UserName:"):user$=Input():PrintN("")
          Print("  Password:"):pass$=Input():PrintN("")
          If user$
            WebPass$=HTTP_CryptedUserPass(user$,pass$)
            HTTP_ChangeWWWAuthenticate(Get,WebPass$)
            If HTTP_ReConnect(Get); neu anfordern
              ReTry=#True
            Else
              PrintN("Can't connect")
            EndIf
          Else
            PrintN("  abort")
          EndIf
        Case 407;Proxy Authentication Required
          PrintN("Proxy Authentication Required:"+HTTP_GetAuthenticateRealm(Get))
          Print("  UserName:"):user$=Input():PrintN("")
          Print("  Password:"):pass$=Input():PrintN("")
          If user$
            ProxyPass$=HTTP_CryptedUserPass(user$,pass$)
            HTTP_ChangeProxyAuthenticate(Get,ProxyPass$)
            If HTTP_ReConnect(Get); neu anfordern
              ReTry=#True
            Else
              PrintN("Can't connect")
            EndIf
          Else
            PrintN("  abort")
          EndIf
        Default
          PrintN("ServerError:")
          PrintN(Str(HTTP_GetError(Get))+" "+HTTP_GetErrorMessage(Get))
      EndSelect
    Until ReTry=#False
    
    PrintN("")
    PrintN("FileSize:"+Str(HTTP_GetFileSize(Get)))
    PrintN("FileReceived:"+Str(Get\Received))
    PrintN("FileDate:"+FormatDate("%dd.%mm.%yyyy %hh:%ii:%ss",HTTP_GetFileDate(Get)))
    
  Else
    PrintN("Cann't connect")
  EndIf
  
  PrintN("")
  PrintN("Press any key")
  Input()
  CloseConsole()
EndIf

End
CompilerEndIf
Edit: Einen kleinen Fehler korrigiert.
Edit: Zweiten Fehler beseitigt.

Verfasst: 16.12.2004 21:00
von Maurizio555
Hallo!
das "PrintN("Press any key") solltest du durch ...("Press ENTER") ersetzen, da nur diese Taste zum Schliessen der Console führt.
Wie kann man mit diesem Toll ein unterbrochenes Download fortsetzen? Macht's automatisch?

Verfasst: 16.12.2004 21:05
von GPI
Maurizio555 hat geschrieben:Hallo!
das "PrintN("Press any key") solltest du durch ...("Press ENTER") ersetzen, da nur diese Taste zum Schliessen der Console führt.
Wie kann man mit diesem Toll ein unterbrochenes Download fortsetzen? Macht's automatisch?
Nein, machts nicht. Aber es ist möglich. Du kannst ja abfragen, wieviel gedownloaded wurde (HTTP_GetFileReceived()) und wie groß sie sein sollte (HTTP_GetFileSize()) und dann startest du ein PartialGet (HTTP_OpenURLPartial). Allerdings hast du dann zwei dateien, die du dann zusammenkopieren mußt (oder du ließt in speicher ein und fügst es dann zusammen. Achtung nicht zu empfehlen bei 256MB-Files).

Verfasst: 16.12.2004 21:05
von DEU.exe
@GPI:

Top! Getestet mit Download to *mem.

Code: Alles auswählen

Case #URLError_OK:PrintN("Download complete") 
          ;{for memorydownload 
          OutBuffer=HTTP_GetOutBuffer(Get) 
          Size=HTTP_GetFileSize(Get) 
          ras$ = Space(Size) 
          CopyMemory(OutBuffer,@ras$,Size)
          PrintN(" done")
Was soll ich da noch sagen? :D
Perfekt.

Danke!

Verfasst: 16.12.2004 21:08
von GPI
du must das

Code: Alles auswählen

HTTP_OpenUrl(Get.HTTPGetId,File$,url,WebPass$,ProxyServer$,ProxyPort,ProxyPass$,0)
zu

Code: Alles auswählen

HTTP_OpenUrl(Get.HTTPGetId,"",url,WebPass$,ProxyServer$,ProxyPort,ProxyPass$,0)
ändern, ansonsten wird nichts in speicher geladen.

Verfasst: 16.12.2004 21:16
von DEU.exe
@GPI:

Haste falsch verstanden wahrscheinlich. Hab ich eh' gemacht - und es geht Super GUT!

:D

Verfasst: 17.12.2004 15:54
von bobobo
geht

Verfasst: 26.12.2004 17:26
von GPI
Einen kleinen Bug behoben.

Verfasst: 27.12.2004 13:40
von bluejoke
:shock:

Noch nicht getestet (muss jetzt zum Mittagessen) aber bei den Features läuft mir das Wasser im Mund zusammen.
Mir wäre eine Lib aber auch ganz recht :allright:

Simon

Verfasst: 28.12.2004 17:29
von deMattin
Wirklich eine tolle Funktionssammlung. Vor Allem sind fast alle Funktionen threadsicher (leider nur fast alle - gibt ja leider unumgängliche Stringfunktionen).

2 kleinere Fehler habe ich gefunden:
Im auskommentierten Bereich des Beispiels für Webseiten mit Authentifizierung wird auf eine falsche Subroutine verwiesen:
statt:

Code: Alles auswählen

; ;user and password required? 
; WebPass$=CreateCryptedPass(user$,pass$)
sollte/muss man das auf:

Code: Alles auswählen

; ;user and password required? 
user$="USERNAMEN"
pass$="PASSWORT"
WebPass$=HTTP_CryptedUserPass(user$,pass$)
ändern.

Dann ist da wohl noch ein Problem mit der Portangabe für Webseiten, die nicht auf Port 80 laufen.
So eine Anfrage sieht ja z.B. so in der Art aus:
http://www.webseite.de/verzeichnis/datei.txt:8080
und ich bin der Meinung, das funktioniert derzeit so nicht (s. HTTP_ChangeURL()) - weder wenn man den Port definiert per Variable noch wenn mann die Abfrage so komplett als URL angibt (mit Port). Die Suche des Ports in der Routine findet diese nicht und am Schluss ist da noch was mit Port und Port$ ...
Oder verstehe ich hier die Sub nur nicht richtig?!

Ansonsten schliese ich mich an - später daraus eine Lib zu machen wäre klasse. Sind Libs eigentlich automatisch threadsave bzgl. diesem Stringpointerproblem? ;)
Denn bei Programmen mit Webabfragen/Downloads kommt man an Programmierung mit Threads ja leider nicht vorbei.

Gruß und Danke,
Martin
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