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Private Sub Srv_http()
Dim arguments As String() = New String() {"--base", "web", "--address", monip, "--port", port_http}
Log("serveur web lancé avec " & monip & ":" & port_http, True)
WebHTTP(arguments)
End Sub
Private ReadOnly type_de_contenu As New Dictionary(Of String, String) From {
{".htm", "text/html"},
{".html", "text/html"},
{".js", "text/javascript"},
{".css", "text/css"},
{".png", "image/png"},
{".jpg", "image/jpeg"},
{".jpeg", "image/jpeg"},
{".gif", "image/gif"}
} ' ajout si besoin
Private Function Trouve_type_de_contenu(ByVal chemin As String) As String
Dim ext As String = IO.Path.GetExtension(chemin)
If type_de_contenu.ContainsKey(ext) Then Return type_de_contenu(ext)
Return "text/plain"
End Function
Private Const READ_BUFFER_SIZE As Integer = 512 * 1024
Public Sub WebHTTP(ByVal arguments() As String)
Dim occupe As Boolean = False
Try
Dim options As New Dictionary(Of String, String) From {{"--port", "8080"}, {"--address", "127.0.0.1"}, {"--base", String.Empty}}
For i As Integer = 0 To arguments.Length - 2
If arguments(i).StartsWith("-") AndAlso options.ContainsKey(arguments(i)) Then options(arguments(i)) = arguments(i + 1)
Next
'recupere le chemin de base
Dim basedir As String = Path.Combine(My.Computer.FileSystem.CurrentDirectory, options("--base"))
'on ecoute
Dim s As New TcpListener(IPAddress.Parse(options("--address")), Integer.Parse(options("--port")))
Dim client As TcpClient
s.Start()
Do
client = s.AcceptTcpClient() 'on attend le prochain TCP client, et accepte la cnx
Dim flux As NetworkStream = client.GetStream() 'on lit
Dim sendingData As New Text.StringBuilder()
Dim rdata(READ_BUFFER_SIZE - 1) As Byte
Dim read As Integer
Try
Do
read = flux.Read(rdata, 0, READ_BUFFER_SIZE)
sendingData.Append(Encoding.UTF8.GetString(rdata, 0, read))
Loop While read = READ_BUFFER_SIZE
Catch
End Try
#If Not DEBUG Then
Try
#End If
If sendingData.Length > 0 Then
occupe = True
Dim data As String = sendingData.ToString()
Dim headers() As String = data.Split({ControlChars.Cr, ControlChars.Lf}, StringSplitOptions.RemoveEmptyEntries)
Dim basicRequestInfo() As String = headers(0).Split(" "c)
Dim method As String = basicRequestInfo(0)
Dim filepath As String = basicRequestInfo(1).Substring(1)
Dim actualFilepath As String = Path.Combine(basedir, Uri.UnescapeDataString(Regex.Replace(filepath, "\?.*$", "")).TrimStart("/"c).Replace("/"c, "\"c))
Dim httpVersion As String = basicRequestInfo(2)
Dim responseHeaders As New Dictionary(Of String, String)
Dim statusCode As String = "200"
Dim statusReason As String = "OK"
Dim responseContent() As Byte = {}
If httpVersion <> "HTTP/1.0" AndAlso httpVersion <> "HTTP/1.1" Then 'verifie la version http : HTTP/1.0 and HTTP/1.1 seulement
statusCode = "505"
statusReason = "HTTP Version Not Supported"
responseContent = Encoding.UTF8.GetBytes("505 HTTP Version Not Supported")
Else
If (filepath) = "now" Then
Statistique_v2(Date.Parse(Now.Year & "-" & Now.Month & "-" & Now.Day & " 00:00:01"), Date.Parse(Now.Year & "-" & Now.Month & "-" & Now.Day & " 23:59:59"))
filepath = Path.Combine(basedir, "stats.html")
actualFilepath = Path.Combine(basedir, "stats.html")
End If
If (filepath) = "yesterday" Then
filepath = Path.Combine(basedir, "stats.html")
actualFilepath = Path.Combine(basedir, "stats.html")
Statistique_v2((Date.Parse(Now.Year & "-" & Now.Month & "-" & Now.Day & " 00:00:01")).AddDays(-1), Date.Parse((Now.Year & "-" & Now.Month & "-" & Now.Day & " 23:59:59")).AddDays(-1))
End If
If (filepath) = "week" Then
filepath = Path.Combine(basedir, "stats.html")
actualFilepath = Path.Combine(basedir, "stats.html")
Statistique_v2((Date.Parse(Now.Year & "-" & Now.Month & "-" & Now.Day & " 00:00:01")).AddDays(-7), Date.Parse((Now.Year & "-" & Now.Month & "-" & Now.Day & " 23:59:59")))
End If
If (filepath) = "month" Then
filepath = Path.Combine(basedir, "stats.html")
actualFilepath = Path.Combine(basedir, "stats.html")
Statistique_v2((Date.Parse(Now.Year & "-" & Now.Month & "-" & Now.Day & " 00:00:01")).AddMonths(-1), Date.Parse((Now.Year & "-" & Now.Month & "-" & Now.Day & " 23:59:59")))
End If
Try 'Attempt to check if the requested path is a directory; if so, we'll add index.html to it:
If filepath = String.Empty OrElse filepath = "/" Then
actualFilepath = Path.Combine(basedir, "index.html")
filepath = "/"
ElseIf Directory.Exists(actualFilepath) Then
actualFilepath = Path.Combine(actualFilepath, "index.html")
End If
Catch
'Ignore the error; it will appear once again when we try to read the file.
End Try
If method = "GET" Then 'Check the method - we only support GET and HEAD:
If filepath.Contains("..") Then 'Make sure nobody's trying to hack the system by requesting ../whatever or an absolute path:
statusCode = "403"
statusReason = "Forbidden"
responseContent = Encoding.UTF8.GetBytes("403 Forbidden")
Log("fichier {0} en erreur 403 Forbidden : " & filepath)
ElseIf Not File.Exists(actualFilepath) Then
statusCode = "404"
statusReason = "Not Found"
responseContent = Encoding.UTF8.GetBytes("404 Not Found :(")
Log("fichier {0} en erreur 404 Not Found : " & filepath & " " & actualFilepath)
Else
Try
responseContent = File.ReadAllBytes(actualFilepath) 'Read the requested file:
responseHeaders.Add("Content-Length", responseContent.Length.ToString()) 'Get the requested file's length:
responseHeaders.Add("Content-Type", trouve_type_de_contenu(actualFilepath)) 'And get its content type too:
Catch
statusCode = "403" 'Couldn't get the file's information - assume forbidden.
statusReason = "Forbidden"
responseContent = Encoding.UTF8.GetBytes("403 Forbidden")
End Try
End If
ElseIf method = "HEAD" Then
If filepath.Contains("..") Then 'Make sure nobody's trying to hack the system by requesting ../whatever or an absolute path:
statusCode = "403"
statusReason = "Forbidden"
responseContent = Encoding.UTF8.GetBytes("403 Forbidden")
Log("fichier {0} en erreur 403 Forbidden : " & filepath)
ElseIf Not File.Exists(actualFilepath) Then
statusCode = "404"
statusReason = "Not Found"
responseContent = Encoding.UTF8.GetBytes("404 Not Found")
Log("{0} en erreur 404 Not Found : " & filepath)
Else
Try
responseHeaders.Add("Content-Length", New FileInfo(actualFilepath).Length.ToString()) 'Get the requested file's length:
responseHeaders.Add("Content-Type", trouve_type_de_contenu(actualFilepath)) 'And get its content type too:
Catch
statusCode = "403"
statusReason = "Forbidden"
responseContent = Encoding.UTF8.GetBytes("403 Forbidden")
End Try
End If
Else
statusCode = "405"
statusReason = "Method Not Allowed"
End If
Dim response As New List(Of Byte) 'Prepare the response:
response.AddRange(Encoding.UTF8.GetBytes("HTTP/1.1 " & statusCode & statusReason & ControlChars.CrLf)) 'Prepare the response's HTTP version and status:
Dim combinedResponseHeaders As New List(Of String) 'Prepare the response's headers:
For Each header As KeyValuePair(Of String, String) In responseHeaders : combinedResponseHeaders.Add(header.Key & ": " & header.Value) : Next
response.AddRange(Encoding.UTF8.GetBytes(String.Join(ControlChars.CrLf, combinedResponseHeaders.ToArray())))
response.Add(13) : response.Add(10) : response.Add(13) : response.Add(10) : response.AddRange(responseContent) 'Prepare the response's content:
flux.Write(response.ToArray(), 0, response.Count) 'Finally, write the response:
End If
End If
#If Not DEBUG Then
Catch ex As Exception
Console.WriteLine("Serious error while processing request: ")
Console.WriteLine(ex.ToString())
Try
Dim errorResponse() As Byte = Encoding.UTF8.GetBytes("HTTP/1.1 500 Internal Server Error" & ControlChars.CrLf & ControlChars.CrLf & "500 Internal Server Error")
ns.Write(errorResponse, 0, errorResponse.Length)
Catch
End Try
End Try
#End If
client.Close()
occupe = False
Loop
Catch ex As SocketException
Log(" pb socket tcp; socket deja utilisé ", True)
End Try
End Sub |
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