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move asyncftpclient to nimble packages (#20952)
This commit is contained in:
ringabout
@@ -1,524 +0,0 @@
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#
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#
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# Nim's Runtime Library
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# (c) Copyright 2015 Dominik Picheta
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## This module implements an asynchronous FTP client. It allows you to connect
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## to an FTP server and perform operations on it such as for example:
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##
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## * The upload of new files.
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## * The removal of existing files.
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## * Download of files.
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## * Changing of files' permissions.
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## * Navigation through the FTP server's directories.
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##
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## Connecting to an FTP server
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## ===========================
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##
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## In order to begin any sort of transfer of files you must first
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## connect to an FTP server. You can do so with the `connect` procedure.
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##
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## ```Nim
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## import std/[asyncdispatch, asyncftpclient]
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## proc main() {.async.} =
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## var ftp = newAsyncFtpClient("example.com", user = "test", pass = "test")
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## await ftp.connect()
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## echo("Connected")
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## waitFor(main())
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## ```
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##
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## A new `main` async procedure must be declared to allow the use of the
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## `await` keyword. The connection will complete asynchronously and the
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## client will be connected after the `await ftp.connect()` call.
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##
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## Uploading a new file
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## ====================
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##
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## After a connection is made you can use the `store` procedure to upload
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## a new file to the FTP server. Make sure to check you are in the correct
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## working directory before you do so with the `pwd` procedure, you can also
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## instead specify an absolute path.
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##
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## ```Nim
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## import std/[asyncdispatch, asyncftpclient]
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## proc main() {.async.} =
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## var ftp = newAsyncFtpClient("example.com", user = "test", pass = "test")
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## await ftp.connect()
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## let currentDir = await ftp.pwd()
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## assert currentDir == "/home/user/"
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## await ftp.store("file.txt", "file.txt")
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## echo("File finished uploading")
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## waitFor(main())
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## ```
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##
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## Checking the progress of a file transfer
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## ========================================
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##
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## The progress of either a file upload or a file download can be checked
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## by specifying a `onProgressChanged` procedure to the `store` or
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## `retrFile` procedures.
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##
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## Procs that take an `onProgressChanged` callback will call this every
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## `progressInterval` milliseconds.
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##
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## ```Nim
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## import std/[asyncdispatch, asyncftpclient]
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##
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## proc onProgressChanged(total, progress: BiggestInt,
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## speed: float) {.async.} =
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## echo("Uploaded ", progress, " of ", total, " bytes")
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## echo("Current speed: ", speed, " kb/s")
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##
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## proc main() {.async.} =
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## var ftp = newAsyncFtpClient("example.com", user = "test", pass = "test", progressInterval = 500)
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## await ftp.connect()
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## await ftp.store("file.txt", "/home/user/file.txt", onProgressChanged)
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## echo("File finished uploading")
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## waitFor(main())
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## ```
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import asyncdispatch, asyncnet, nativesockets, strutils, parseutils, os, times
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from net import BufferSize, SslContext
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when defined(nimPreviewSlimSystem):
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import std/syncio
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when defined(ssl):
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from net import SslHandshakeType, newContext, SslCVerifyMode
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var defaultSslContext {.threadvar.}: SslContext
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proc getSSLContext(): SslContext =
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if defaultSSLContext == nil:
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defaultSSLContext = newContext(verifyMode = CVerifyPeer)
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result = defaultSSLContext
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when defined(nimPreviewSlimSystem):
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import std/assertions
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type
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AsyncFtpClient* = ref object
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csock*: AsyncSocket
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dsock*: AsyncSocket
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user*, pass*: string
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address*: string
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port*: Port
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progressInterval: int
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jobInProgress*: bool
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job*: FtpJob
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dsockConnected*: bool
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useTls: bool
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when defined(ssl):
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sslContext: SslContext
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FtpJobType* = enum
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JRetrText, JRetr, JStore
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FtpJob = ref object
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prc: proc (ftp: AsyncFtpClient, async: bool): bool {.nimcall, gcsafe.}
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case typ*: FtpJobType
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of JRetrText:
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lines: string
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of JRetr, JStore:
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file: File
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filename: string
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total: BiggestInt # In bytes.
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progress: BiggestInt # In bytes.
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oneSecond: BiggestInt # Bytes transferred in one second.
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lastProgressReport: float # Time
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toStore: string # Data left to upload (Only used with async)
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FtpEventType* = enum
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EvTransferProgress, EvLines, EvRetr, EvStore
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FtpEvent* = object ## Event
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filename*: string
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case typ*: FtpEventType
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of EvLines:
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lines*: string ## Lines that have been transferred.
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of EvRetr, EvStore: ## Retr/Store operation finished.
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nil
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of EvTransferProgress:
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bytesTotal*: BiggestInt ## Bytes total.
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bytesFinished*: BiggestInt ## Bytes transferred.
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speed*: BiggestInt ## Speed in bytes/s
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currentJob*: FtpJobType ## The current job being performed.
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ReplyError* = object of IOError
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ProgressChangedProc* =
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proc (total, progress: BiggestInt, speed: float):
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Future[void] {.closure, gcsafe.}
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const multiLineLimit = 10000
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proc expectReply(ftp: AsyncFtpClient): Future[string] {.async.} =
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var line = await ftp.csock.recvLine()
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result = line
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var count = 0
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while line.len > 3 and line[3] == '-':
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## Multi-line reply.
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line = await ftp.csock.recvLine()
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result.add("\n" & line)
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count.inc()
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if count >= multiLineLimit:
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raise newException(ReplyError, "Reached maximum multi-line reply count.")
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proc send*(ftp: AsyncFtpClient, m: string): Future[string] {.async.} =
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## Send a message to the server, and wait for a primary reply.
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## `\c\L` is added for you.
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##
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## You need to make sure that the message `m` doesn't contain any newline
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## characters. Failing to do so will raise `AssertionDefect`.
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##
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## **Note:** The server may return multiple lines of coded replies.
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doAssert(not m.contains({'\c', '\L'}), "message shouldn't contain any newline characters")
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await ftp.csock.send(m & "\c\L")
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return await ftp.expectReply()
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proc assertReply(received: string, expected: varargs[string]) =
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for i in items(expected):
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if received.startsWith(i): return
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raise newException(ReplyError,
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"Expected reply '$1' got: $2" %
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[expected.join("' or '"), received])
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proc pasv(ftp: AsyncFtpClient) {.async.} =
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## Negotiate a data connection.
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ftp.dsock = newAsyncSocket()
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var pasvMsg = (await ftp.send("PASV")).strip
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assertReply(pasvMsg, "227")
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var betweenParens = captureBetween(pasvMsg, '(', ')')
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var nums = betweenParens.split(',')
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var ip = nums[0 .. ^3]
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var port = nums[^2 .. ^1]
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var properPort = port[0].parseInt()*256+port[1].parseInt()
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let address = ip.join(".")
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await ftp.dsock.connect(address, Port(properPort))
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ftp.dsockConnected = true
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if ftp.useTls:
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when defined(ssl):
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try:
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ftp.sslContext.wrapConnectedSocket(ftp.dsock, handshakeAsClient, address)
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except:
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ftp.dsock.close()
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raise getCurrentException()
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else:
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doAssert false, "TLS support is not available. Cannot connect over TLS. Compile with -d:ssl to enable."
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proc normalizePathSep(path: string): string =
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return replace(path, '\\', '/')
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proc connect*(ftp: AsyncFtpClient) {.async.} =
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## Connect to the FTP server specified by `ftp`.
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await ftp.csock.connect(ftp.address, ftp.port)
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var reply = await ftp.expectReply()
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if reply.startsWith("120"):
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# 120 Service ready in nnn minutes.
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# We wait until we receive 220.
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reply = await ftp.expectReply()
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# Handle 220 messages from the server
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assertReply(reply, "220")
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if ftp.useTls:
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when defined(ssl):
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assertReply(await(ftp.send("AUTH TLS")), "234")
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try:
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ftp.sslContext.wrapConnectedSocket(ftp.csock, handshakeAsClient, ftp.address)
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except:
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ftp.csock.close()
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raise getCurrentException()
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else:
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doAssert false, "TLS support is not available. Cannot connect over TLS. Compile with -d:ssl to enable."
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if ftp.user != "":
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assertReply(await(ftp.send("USER " & ftp.user)), "230", "331")
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if ftp.pass != "":
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assertReply(await(ftp.send("PASS " & ftp.pass)), "230")
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if ftp.useTls:
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assertReply(await(ftp.send("PBSZ 0")), "200")
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assertReply(await(ftp.send("PROT P")), "200")
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assertReply(await(ftp.send("TYPE I")), "200")
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proc pwd*(ftp: AsyncFtpClient): Future[string] {.async.} =
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## Returns the current working directory.
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let wd = await ftp.send("PWD")
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assertReply wd, "257"
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return wd.captureBetween('"') # "
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proc cd*(ftp: AsyncFtpClient, dir: string) {.async.} =
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## Changes the current directory on the remote FTP server to `dir`.
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assertReply(await(ftp.send("CWD " & dir.normalizePathSep)), "250")
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proc cdup*(ftp: AsyncFtpClient) {.async.} =
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## Changes the current directory to the parent of the current directory.
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assertReply(await(ftp.send("CDUP")), "200")
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proc getLines(ftp: AsyncFtpClient): Future[string] {.async.} =
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## Downloads text data in ASCII mode
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assert ftp.dsockConnected
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while ftp.dsockConnected:
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let r = await ftp.dsock.recvLine()
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if r.len == 0:
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ftp.dsock.close()
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ftp.dsockConnected = false
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else:
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if result.len > 0: result.add "\n"
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result.add r
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assertReply(await(ftp.expectReply()), "226")
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proc listDirs*(ftp: AsyncFtpClient, dir = ""): Future[seq[string]] {.async.} =
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## Returns a list of filenames in the given directory. If `dir` is "",
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## the current directory is used. If `async` is true, this
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## function will return immediately and it will be your job to
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## use asyncdispatch's `poll` to progress this operation.
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await ftp.pasv()
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assertReply(await(ftp.send("NLST " & dir.normalizePathSep)), ["125", "150"])
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result = splitLines(await ftp.getLines())
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proc fileExists*(ftp: AsyncFtpClient, file: string): Future[bool] {.async.} =
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## Determines whether `file` exists.
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var files = await ftp.listDirs()
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for f in items(files):
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if f.normalizePathSep == file.normalizePathSep: return true
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proc createDir*(ftp: AsyncFtpClient, dir: string, recursive = false){.async.} =
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## Creates a directory `dir`. If `recursive` is true, the topmost
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## subdirectory of `dir` will be created first, following the secondmost...
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## etc. this allows you to give a full path as the `dir` without worrying
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## about subdirectories not existing.
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if not recursive:
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assertReply(await(ftp.send("MKD " & dir.normalizePathSep)), "257")
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else:
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var reply = ""
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var previousDirs = ""
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for p in split(dir, {os.DirSep, os.AltSep}):
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if p != "":
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previousDirs.add(p)
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reply = await ftp.send("MKD " & previousDirs)
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previousDirs.add('/')
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assertReply reply, "257"
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proc chmod*(ftp: AsyncFtpClient, path: string,
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permissions: set[FilePermission]) {.async.} =
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## Changes permission of `path` to `permissions`.
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var userOctal = 0
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var groupOctal = 0
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var otherOctal = 0
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for i in items(permissions):
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case i
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of fpUserExec: userOctal.inc(1)
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of fpUserWrite: userOctal.inc(2)
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of fpUserRead: userOctal.inc(4)
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of fpGroupExec: groupOctal.inc(1)
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of fpGroupWrite: groupOctal.inc(2)
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of fpGroupRead: groupOctal.inc(4)
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of fpOthersExec: otherOctal.inc(1)
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of fpOthersWrite: otherOctal.inc(2)
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of fpOthersRead: otherOctal.inc(4)
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var perm = $userOctal & $groupOctal & $otherOctal
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assertReply(await(ftp.send("SITE CHMOD " & perm &
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" " & path.normalizePathSep)), "200")
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proc list*(ftp: AsyncFtpClient, dir = ""): Future[string] {.async.} =
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## Lists all files in `dir`. If `dir` is `""`, uses the current
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## working directory.
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await ftp.pasv()
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let reply = await ftp.send("LIST" & " " & dir.normalizePathSep)
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assertReply(reply, ["125", "150"])
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result = await ftp.getLines()
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proc retrText*(ftp: AsyncFtpClient, file: string): Future[string] {.async.} =
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## Retrieves `file`. File must be ASCII text.
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await ftp.pasv()
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let reply = await ftp.send("RETR " & file.normalizePathSep)
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assertReply(reply, ["125", "150"])
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result = await ftp.getLines()
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proc getFile(ftp: AsyncFtpClient, file: File, total: BiggestInt,
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onProgressChanged: ProgressChangedProc) {.async.} =
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assert ftp.dsockConnected
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var progress = 0
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var progressInSecond = 0
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var countdownFut = sleepAsync(ftp.progressInterval)
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var dataFut = ftp.dsock.recv(BufferSize)
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while ftp.dsockConnected:
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await dataFut or countdownFut
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if countdownFut.finished:
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asyncCheck onProgressChanged(total, progress,
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progressInSecond.float)
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progressInSecond = 0
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countdownFut = sleepAsync(ftp.progressInterval)
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if dataFut.finished:
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let data = dataFut.read
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if data.len > 0:
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progress.inc(data.len)
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progressInSecond.inc(data.len)
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file.write(data)
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dataFut = ftp.dsock.recv(BufferSize)
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else:
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ftp.dsockConnected = false
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ftp.dsock.close()
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assertReply(await(ftp.expectReply()), "226")
|
||||
|
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proc defaultOnProgressChanged*(total, progress: BiggestInt,
|
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speed: float): Future[void] {.nimcall, gcsafe.} =
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## Default FTP `onProgressChanged` handler. Does nothing.
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result = newFuture[void]()
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#echo(total, " ", progress, " ", speed)
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result.complete()
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proc retrFile*(ftp: AsyncFtpClient, file, dest: string,
|
||||
onProgressChanged: ProgressChangedProc = defaultOnProgressChanged) {.async.} =
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||||
## Downloads `file` and saves it to `dest`.
|
||||
## The `EvRetr` event is passed to the specified `handleEvent` function
|
||||
## when the download is finished. The event's `filename` field will be equal
|
||||
## to `file`.
|
||||
var destFile = open(dest, mode = fmWrite)
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await ftp.pasv()
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var reply = await ftp.send("RETR " & file.normalizePathSep)
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assertReply reply, ["125", "150"]
|
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if {'(', ')'} notin reply:
|
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raise newException(ReplyError, "Reply has no file size.")
|
||||
var fileSize: BiggestInt
|
||||
if reply.captureBetween('(', ')').parseBiggestInt(fileSize) == 0:
|
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raise newException(ReplyError, "Reply has no file size.")
|
||||
|
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await getFile(ftp, destFile, fileSize, onProgressChanged)
|
||||
destFile.close()
|
||||
|
||||
proc doUpload(ftp: AsyncFtpClient, file: File,
|
||||
onProgressChanged: ProgressChangedProc) {.async.} =
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assert ftp.dsockConnected
|
||||
|
||||
let total = file.getFileSize()
|
||||
var data = newString(4000)
|
||||
var progress = 0
|
||||
var progressInSecond = 0
|
||||
var countdownFut = sleepAsync(ftp.progressInterval)
|
||||
var sendFut: Future[void] = nil
|
||||
while ftp.dsockConnected:
|
||||
if sendFut == nil or sendFut.finished:
|
||||
# TODO: Async file reading.
|
||||
let len = file.readBuffer(addr data[0], 4000)
|
||||
setLen(data, len)
|
||||
if len == 0:
|
||||
# File finished uploading.
|
||||
ftp.dsock.close()
|
||||
ftp.dsockConnected = false
|
||||
|
||||
assertReply(await(ftp.expectReply()), "226")
|
||||
else:
|
||||
progress.inc(len)
|
||||
progressInSecond.inc(len)
|
||||
sendFut = ftp.dsock.send(data)
|
||||
|
||||
if countdownFut.finished:
|
||||
asyncCheck onProgressChanged(total, progress, progressInSecond.float)
|
||||
progressInSecond = 0
|
||||
countdownFut = sleepAsync(ftp.progressInterval)
|
||||
|
||||
await countdownFut or sendFut
|
||||
|
||||
proc store*(ftp: AsyncFtpClient, file, dest: string,
|
||||
onProgressChanged: ProgressChangedProc = defaultOnProgressChanged) {.async.} =
|
||||
## Uploads `file` to `dest` on the remote FTP server. Usage of this
|
||||
## function asynchronously is recommended to view the progress of
|
||||
## the download.
|
||||
## The `EvStore` event is passed to the specified `handleEvent` function
|
||||
## when the upload is finished, and the `filename` field will be
|
||||
## equal to `file`.
|
||||
var destFile = open(file)
|
||||
await ftp.pasv()
|
||||
|
||||
let reply = await ftp.send("STOR " & dest.normalizePathSep)
|
||||
assertReply reply, ["125", "150"]
|
||||
|
||||
await doUpload(ftp, destFile, onProgressChanged)
|
||||
|
||||
proc rename*(ftp: AsyncFtpClient, nameFrom: string, nameTo: string) {.async.} =
|
||||
## Rename a file or directory on the remote FTP Server from current name
|
||||
## `name_from` to new name `name_to`
|
||||
assertReply(await ftp.send("RNFR " & nameFrom), "350")
|
||||
assertReply(await ftp.send("RNTO " & nameTo), "250")
|
||||
|
||||
proc removeFile*(ftp: AsyncFtpClient, filename: string) {.async.} =
|
||||
## Delete a file `filename` on the remote FTP server
|
||||
assertReply(await ftp.send("DELE " & filename), "250")
|
||||
|
||||
proc removeDir*(ftp: AsyncFtpClient, dir: string) {.async.} =
|
||||
## Delete a directory `dir` on the remote FTP server
|
||||
assertReply(await ftp.send("RMD " & dir), "250")
|
||||
|
||||
proc newAsyncFtpClient*(address: string, port = Port(21),
|
||||
user, pass = "", progressInterval: int = 1000, useTls = false, sslContext: SslContext = nil): AsyncFtpClient =
|
||||
## Creates a new `AsyncFtpClient` object.
|
||||
new result
|
||||
result.user = user
|
||||
result.pass = pass
|
||||
result.address = address
|
||||
result.port = port
|
||||
result.progressInterval = progressInterval
|
||||
result.dsockConnected = false
|
||||
result.csock = newAsyncSocket()
|
||||
if useTls:
|
||||
when defined(ssl):
|
||||
result.useTls = true
|
||||
if sslContext == nil:
|
||||
result.sslContext = getSSLContext()
|
||||
else:
|
||||
result.sslContext = sslContext
|
||||
else:
|
||||
doAssert false, "TLS support is not available. Cannot connect over TLS. Compile with -d:ssl to enable."
|
||||
|
||||
when not defined(testing) and defined(ssl) and isMainModule:
|
||||
var ftp = newAsyncFtpClient("example.com", user = "test", pass = "test")
|
||||
proc main(ftp: AsyncFtpClient) {.async.} =
|
||||
await ftp.connect()
|
||||
echo await ftp.pwd()
|
||||
echo await ftp.listDirs()
|
||||
await ftp.store("payload.jpg", "payload.jpg")
|
||||
await ftp.retrFile("payload.jpg", "payload2.jpg")
|
||||
await ftp.rename("payload.jpg", "payload_renamed.jpg")
|
||||
await ftp.store("payload.jpg", "payload_remove.jpg")
|
||||
await ftp.removeFile("payload_remove.jpg")
|
||||
await ftp.createDir("deleteme")
|
||||
await ftp.removeDir("deleteme")
|
||||
echo("Finished")
|
||||
|
||||
var ftps = newAsyncFtpClient("example.com", user = "test", pass = "test", useTls = true)
|
||||
proc main1(ftp: AsyncFtpClient) {.async.} =
|
||||
await ftps.connect()
|
||||
echo await ftps.pwd()
|
||||
echo await ftps.listDirs()
|
||||
await ftps.store("payload.jpg", "payload.jpg")
|
||||
await ftps.retrFile("payload.jpg", "payload2.jpg")
|
||||
await ftps.rename("payload.jpg", "payload_renamed.jpg")
|
||||
await ftps.store("payload.jpg", "payload_remove.jpg")
|
||||
await ftps.removeFile("payload_remove.jpg")
|
||||
await ftps.createDir("deleteme")
|
||||
await ftps.removeDir("deleteme")
|
||||
echo("Finished")
|
||||
|
||||
waitFor main(ftp)
|
||||
waitFor main1(ftp)
|
||||
@@ -20,7 +20,6 @@ import
|
||||
algorithm,
|
||||
asyncdispatch,
|
||||
asyncfile,
|
||||
asyncftpclient,
|
||||
asyncfutures,
|
||||
asynchttpserver,
|
||||
asyncmacro,
|
||||
|
||||
Reference in New Issue
Block a user