2004-06-21 08:07:58 +02:00
|
|
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
|
|
|
|
|
"http://www.w3.org/TR/html4/strict.dtd">
|
|
|
|
|
<html>
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
<head>
|
2004-06-21 08:07:58 +02:00
|
|
|
<meta name="description" content="LuaSocket: FTP support">
|
2004-11-28 09:17:16 +01:00
|
|
|
<meta name="keywords" content="Lua, LuaSocket, FTP, Network, Library, Support">
|
2004-06-21 08:07:58 +02:00
|
|
|
<title>LuaSocket: FTP support</title>
|
2003-08-31 03:00:15 +02:00
|
|
|
<link rel="stylesheet" href="reference.css" type="text/css">
|
|
|
|
|
</head>
|
|
|
|
|
|
|
|
|
|
<body>
|
|
|
|
|
|
|
|
|
|
<!-- header ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
|
|
|
|
|
|
<div class=header>
|
|
|
|
|
<hr>
|
|
|
|
|
<center>
|
|
|
|
|
<table summary="LuaSocket logo">
|
|
|
|
|
<tr><td align=center><a href="http://www.lua.org">
|
2004-06-21 08:07:58 +02:00
|
|
|
<img width=128 height=128 border=0 alt="LuaSocket" src="luasocket.png">
|
2003-08-31 03:00:15 +02:00
|
|
|
</a></td></tr>
|
|
|
|
|
<tr><td align=center valign=top>Network support for the Lua language
|
|
|
|
|
</td></tr>
|
|
|
|
|
</table>
|
|
|
|
|
<p class=bar>
|
2012-02-07 23:37:28 +01:00
|
|
|
<a href="index.html">home</a> ·
|
|
|
|
|
<a href="index.html#download">download</a> ·
|
2004-12-13 07:26:01 +01:00
|
|
|
<a href="installation.html">installation</a> ·
|
2003-08-31 03:00:15 +02:00
|
|
|
<a href="introduction.html">introduction</a> ·
|
|
|
|
|
<a href="reference.html">reference</a>
|
|
|
|
|
</p>
|
|
|
|
|
</center>
|
|
|
|
|
<hr>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<!-- ftp ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
|
|
|
|
|
|
<h2 id=ftp>FTP</h2>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
FTP (File Transfer Protocol) is a protocol used to transfer files
|
2004-06-16 06:28:21 +02:00
|
|
|
between hosts. The <tt>ftp</tt> namespace offers thorough support
|
|
|
|
|
to FTP, under a simple interface. The implementation conforms to
|
2003-08-31 03:00:15 +02:00
|
|
|
<a href="http://www.cs.princeton.edu/~diego/rfc/rfc0959.txt">RFC 959</a>.
|
|
|
|
|
</p>
|
|
|
|
|
|
2004-06-15 08:24:00 +02:00
|
|
|
<p>
|
|
|
|
|
High level functions are provided supporting the most common operations.
|
|
|
|
|
These high level functions are implemented on top of a lower level
|
2004-06-16 06:28:21 +02:00
|
|
|
interface. Using the low-level interface, users can easily create their
|
2004-06-15 08:24:00 +02:00
|
|
|
own functions to access <em>any</em> operation supported by the FTP
|
|
|
|
|
protocol. For that, check the implementation.
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p>
|
2004-06-16 06:28:21 +02:00
|
|
|
To really benefit from this module, a good understanding of
|
2004-06-15 08:24:00 +02:00
|
|
|
<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">
|
|
|
|
|
LTN012, Filters sources and sinks</a> is necessary.
|
|
|
|
|
</p>
|
|
|
|
|
|
2004-06-16 22:41:03 +02:00
|
|
|
<p>
|
|
|
|
|
To obtain the <tt>ftp</tt> namespace, run:
|
2004-06-16 06:28:21 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre class=example>
|
|
|
|
|
-- loads the FTP module and any libraries it requires
|
2005-02-08 11:01:01 +01:00
|
|
|
local ftp = require("socket.ftp")
|
2004-06-16 06:28:21 +02:00
|
|
|
</pre>
|
|
|
|
|
|
2004-06-15 08:24:00 +02:00
|
|
|
<p>
|
2004-06-16 06:28:21 +02:00
|
|
|
URLs MUST conform to
|
|
|
|
|
<a href="http://www.cs.princeton.edu/~diego/rfc/rfc1738.txt">RFC
|
|
|
|
|
1738</a>, that is, an URL is a string in the form:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<blockquote>
|
|
|
|
|
<tt>
|
|
|
|
|
[ftp://][<user>[:<password>]@]<host>[:<port>][/<path>][<i>type</i>=a|i]</tt>
|
|
|
|
|
</blockquote>
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
|
The following constants in the namespace can be set to control the default behavior of
|
2004-06-15 08:24:00 +02:00
|
|
|
the FTP module:
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<ul>
|
|
|
|
|
<li> <tt>PASSWORD</tt>: default anonymous password.
|
|
|
|
|
<li> <tt>PORT</tt>: default port used for the control connection;
|
|
|
|
|
<li> <tt>TIMEOUT</tt>: sets the timeout for all I/O operations;
|
|
|
|
|
<li> <tt>USER</tt>: default anonymous user;
|
|
|
|
|
</ul>
|
|
|
|
|
|
2004-06-16 06:28:21 +02:00
|
|
|
|
2003-08-31 03:00:15 +02:00
|
|
|
<!-- ftp.get ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
|
|
|
|
|
|
<p class=name id=get>
|
2004-06-15 08:24:00 +02:00
|
|
|
ftp.<b>get(</b>url<b>)</b><br>
|
|
|
|
|
ftp.<b>get{</b><br>
|
|
|
|
|
host = <i>string</i>,<br>
|
|
|
|
|
sink = <i>LTN12 sink</i>,<br>
|
|
|
|
|
argument <i>or</i> path = <i>string</i>,<br>
|
|
|
|
|
[user = <i>string</i>,]<br>
|
|
|
|
|
[password = <i>string</i>]<br>
|
|
|
|
|
[command = <i>string</i>,]<br>
|
|
|
|
|
[port = <i>number</i>,]<br>
|
|
|
|
|
[type = <i>string</i>,]<br>
|
2004-06-16 22:41:03 +02:00
|
|
|
[step = <i>LTN12 pump step</i>,]<br>
|
2005-08-12 07:56:32 +02:00
|
|
|
[create = <i>function</i>]<br>
|
2003-08-31 03:00:15 +02:00
|
|
|
<b>}</b>
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p class=description>
|
2004-06-15 08:24:00 +02:00
|
|
|
The <tt>get</tt> function has two forms. The simple form has fixed
|
|
|
|
|
functionality: it downloads the contents of a URL and returns it as a
|
|
|
|
|
string. The generic form allows a <em>lot</em> more control, as explained
|
|
|
|
|
below.
|
2003-08-31 03:00:15 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p class=parameters>
|
2004-06-15 08:24:00 +02:00
|
|
|
If the argument of the <tt>get</tt> function is a table, the function
|
|
|
|
|
expects at least the fields <tt>host</tt>, <tt>sink</tt>, and one of
|
|
|
|
|
<tt>argument</tt> or <tt>path</tt> (<tt>argument</tt> takes
|
|
|
|
|
precedence). <tt>Host</tt> is the server to connect to. <tt>Sink</tt> is
|
2004-06-16 22:41:03 +02:00
|
|
|
the <em>simple</em>
|
|
|
|
|
<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">LTN12</a>
|
|
|
|
|
sink that will receive the downloaded data. <tt>Argument</tt> or
|
2004-06-15 08:24:00 +02:00
|
|
|
<tt>path</tt> give the target path to the resource in the server. The
|
|
|
|
|
optional arguments are the following:
|
2003-08-31 03:00:15 +02:00
|
|
|
</p>
|
2004-06-15 08:24:00 +02:00
|
|
|
<ul>
|
|
|
|
|
<li><tt>user</tt>, <tt>password</tt>: User name and password used for
|
|
|
|
|
authentication. Defaults to "<tt>ftp:anonymous@anonymous.org</tt>";
|
|
|
|
|
<li><tt>command</tt>: The FTP command used to obtain data. Defaults to
|
|
|
|
|
"<tt>retr</tt>", but see example below;
|
2004-06-16 06:28:21 +02:00
|
|
|
<li><tt>port</tt>: The port to used for the control connection. Defaults to 21;
|
2004-06-15 08:24:00 +02:00
|
|
|
<li><tt>type</tt>: The transfer mode. Can take values "<tt>i</tt>" or
|
|
|
|
|
"<tt>a</tt>". Defaults to whatever is the server default;
|
2004-06-16 22:41:03 +02:00
|
|
|
<li><tt>step</tt>:
|
|
|
|
|
<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">LTN12</a>
|
|
|
|
|
pump step function used to pass data from the
|
2005-08-12 07:56:32 +02:00
|
|
|
server to the sink. Defaults to the LTN12 <tt>pump.step</tt> function;
|
2005-10-05 05:16:17 +02:00
|
|
|
<li><tt>create</tt>: An optional function to be used instead of
|
2005-08-12 07:56:32 +02:00
|
|
|
<a href=tcp.html#socket.tcp><tt>socket.tcp</tt></a> when the communications socket is created.
|
2004-06-15 08:24:00 +02:00
|
|
|
</ul>
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
<p class=return>
|
2004-06-15 08:24:00 +02:00
|
|
|
If successful, the simple version returns the URL contents as a
|
|
|
|
|
string, and the generic function returns 1. In case of error, both
|
|
|
|
|
functions return <b><tt>nil</tt></b> and an error message describing the
|
|
|
|
|
error.
|
2003-08-31 03:00:15 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre class=example>
|
2004-06-15 08:24:00 +02:00
|
|
|
-- load the ftp support
|
2005-02-08 11:01:01 +01:00
|
|
|
local ftp = require("socket.ftp")
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
-- Log as user "anonymous" on server "ftp.tecgraf.puc-rio.br",
|
2004-06-15 08:24:00 +02:00
|
|
|
-- and get file "lua.tar.gz" from directory "pub/lua" as binary.
|
|
|
|
|
f, e = ftp.get("ftp://ftp.tecgraf.puc-rio.br/pub/lua/lua.tar.gz;type=i")
|
2003-08-31 03:00:15 +02:00
|
|
|
</pre>
|
|
|
|
|
|
2004-06-15 08:24:00 +02:00
|
|
|
<pre class=example>
|
|
|
|
|
-- load needed modules
|
2005-02-08 11:01:01 +01:00
|
|
|
local ftp = require("socket.ftp")
|
2004-06-15 08:24:00 +02:00
|
|
|
local ltn12 = require("ltn12")
|
2005-02-08 11:01:01 +01:00
|
|
|
local url = require("socket.url")
|
2004-06-15 08:24:00 +02:00
|
|
|
|
|
|
|
|
-- a function that returns a directory listing
|
2004-11-27 08:58:04 +01:00
|
|
|
function nlst(u)
|
2004-06-15 08:24:00 +02:00
|
|
|
local t = {}
|
|
|
|
|
local p = url.parse(u)
|
|
|
|
|
p.command = "nlst"
|
|
|
|
|
p.sink = ltn12.sink.table(t)
|
|
|
|
|
local r, e = ftp.get(p)
|
|
|
|
|
return r and table.concat(t), e
|
|
|
|
|
end
|
|
|
|
|
</pre>
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
<!-- put ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
|
|
|
|
|
|
<p class=name id=put>
|
2004-06-15 08:24:00 +02:00
|
|
|
ftp.<b>put(</b>url, content<b>)</b><br>
|
|
|
|
|
ftp.<b>put{</b><br>
|
|
|
|
|
host = <i>string</i>,<br>
|
|
|
|
|
source = <i>LTN12 sink</i>,<br>
|
|
|
|
|
argument <i>or</i> path = <i>string</i>,<br>
|
|
|
|
|
[user = <i>string</i>,]<br>
|
|
|
|
|
[password = <i>string</i>]<br>
|
|
|
|
|
[command = <i>string</i>,]<br>
|
|
|
|
|
[port = <i>number</i>,]<br>
|
|
|
|
|
[type = <i>string</i>,]<br>
|
2004-06-16 22:41:03 +02:00
|
|
|
[step = <i>LTN12 pump step</i>,]<br>
|
2005-08-12 07:56:32 +02:00
|
|
|
[create = <i>function</i>]<br>
|
2003-08-31 03:00:15 +02:00
|
|
|
<b>}</b>
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p class=description>
|
2004-06-15 08:24:00 +02:00
|
|
|
The <tt>put</tt> function has two forms. The simple form has fixed
|
|
|
|
|
functionality: it uploads a string of content into a URL. The generic form
|
|
|
|
|
allows a <em>lot</em> more control, as explained below.
|
2003-08-31 03:00:15 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<p class=parameters>
|
2004-06-15 08:24:00 +02:00
|
|
|
If the argument of the <tt>put</tt> function is a table, the function
|
|
|
|
|
expects at least the fields <tt>host</tt>, <tt>source</tt>, and one of
|
|
|
|
|
<tt>argument</tt> or <tt>path</tt> (<tt>argument</tt> takes
|
|
|
|
|
precedence). <tt>Host</tt> is the server to connect to. <tt>Source</tt> is
|
2004-06-16 22:41:03 +02:00
|
|
|
the <em>simple</em>
|
|
|
|
|
<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">LTN12</a>
|
|
|
|
|
source that will provide the contents to be uploaded.
|
2004-06-15 08:24:00 +02:00
|
|
|
<tt>Argument</tt> or
|
|
|
|
|
<tt>path</tt> give the target path to the resource in the server. The
|
|
|
|
|
optional arguments are the following:
|
2003-08-31 03:00:15 +02:00
|
|
|
</p>
|
2004-06-15 08:24:00 +02:00
|
|
|
<ul>
|
|
|
|
|
<li><tt>user</tt>, <tt>password</tt>: User name and password used for
|
|
|
|
|
authentication. Defaults to "<tt>ftp:anonymous@anonymous.org</tt>";
|
2004-06-16 06:28:21 +02:00
|
|
|
<li><tt>command</tt>: The FTP command used to send data. Defaults to
|
|
|
|
|
"<tt>stor</tt>", but see example below;
|
|
|
|
|
<li><tt>port</tt>: The port to used for the control connection. Defaults to 21;
|
2004-06-15 08:24:00 +02:00
|
|
|
<li><tt>type</tt>: The transfer mode. Can take values "<tt>i</tt>" or
|
|
|
|
|
"<tt>a</tt>". Defaults to whatever is the server default;
|
2004-06-16 22:41:03 +02:00
|
|
|
<li><tt>step</tt>:
|
|
|
|
|
<a href="http://lua-users.org/wiki/FiltersSourcesAndSinks">LTN12</a>
|
|
|
|
|
pump step function used to pass data from the
|
2005-08-12 07:56:32 +02:00
|
|
|
server to the sink. Defaults to the LTN12 <tt>pump.step</tt> function;
|
2005-10-05 05:16:17 +02:00
|
|
|
<li><tt>create</tt>: An optional function to be used instead of
|
2005-08-12 07:56:32 +02:00
|
|
|
<a href=tcp.html#socket.tcp><tt>socket.tcp</tt></a> when the communications socket is created.
|
2004-06-15 08:24:00 +02:00
|
|
|
</ul>
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
<p class=return>
|
2004-06-15 08:24:00 +02:00
|
|
|
Both functions return 1 if successful, or <b><tt>nil</tt></b> and an error
|
|
|
|
|
message describing the reason for failure.
|
2003-08-31 03:00:15 +02:00
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
<pre class=example>
|
2004-06-15 08:24:00 +02:00
|
|
|
-- load the ftp support
|
2005-02-08 11:01:01 +01:00
|
|
|
local ftp = require("socket.ftp")
|
2003-08-31 03:00:15 +02:00
|
|
|
|
2004-06-21 00:19:54 +02:00
|
|
|
-- Log as user "fulano" on server "ftp.example.com",
|
|
|
|
|
-- using password "silva", and store a file "README" with contents
|
2004-06-15 08:24:00 +02:00
|
|
|
-- "wrong password, of course"
|
2004-06-21 00:19:54 +02:00
|
|
|
f, e = ftp.put("ftp://fulano:silva@ftp.example.com/README",
|
2004-06-16 06:28:21 +02:00
|
|
|
"wrong password, of course")
|
2004-06-15 08:24:00 +02:00
|
|
|
</pre>
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
<pre class=example>
|
2004-06-15 08:24:00 +02:00
|
|
|
-- load the ftp support
|
2005-02-08 11:01:01 +01:00
|
|
|
local ftp = require("socket.ftp")
|
2004-06-15 08:24:00 +02:00
|
|
|
local ltn12 = require("ltn12")
|
|
|
|
|
|
2004-06-21 00:19:54 +02:00
|
|
|
-- Log as user "fulano" on server "ftp.example.com",
|
|
|
|
|
-- using password "silva", and append to the remote file "LOG", sending the
|
2004-06-16 06:28:21 +02:00
|
|
|
-- contents of the local file "LOCAL-LOG"
|
2004-06-15 08:24:00 +02:00
|
|
|
f, e = ftp.put{
|
2004-06-21 00:19:54 +02:00
|
|
|
host = "ftp.example.com",
|
|
|
|
|
user = "fulano",
|
|
|
|
|
password = "silva",
|
2004-06-15 08:24:00 +02:00
|
|
|
command = "appe",
|
|
|
|
|
argument = "LOG",
|
|
|
|
|
source = ltn12.source.file(io.open("LOCAL-LOG", "r"))
|
2003-08-31 03:00:15 +02:00
|
|
|
}
|
|
|
|
|
</pre>
|
2004-06-15 08:24:00 +02:00
|
|
|
|
2003-08-31 03:00:15 +02:00
|
|
|
|
|
|
|
|
<!-- footer +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
|
|
|
|
|
|
|
|
|
|
<div class=footer>
|
|
|
|
|
<hr>
|
|
|
|
|
<center>
|
|
|
|
|
<p class=bar>
|
2012-02-07 23:37:28 +01:00
|
|
|
<a href="index.html">home</a> ·
|
|
|
|
|
<a href="index.html#download">download</a> ·
|
2004-12-13 07:26:01 +01:00
|
|
|
<a href="installation.html">installation</a> ·
|
2003-08-31 03:00:15 +02:00
|
|
|
<a href="introduction.html">introduction</a> ·
|
|
|
|
|
<a href="reference.html">reference</a>
|
|
|
|
|
</p>
|
|
|
|
|
<p>
|
|
|
|
|
<small>
|
|
|
|
|
Last modified by Diego Nehab on <br>
|
2006-04-20 06:27:13 +02:00
|
|
|
Thu Apr 20 00:25:18 EDT 2006
|
2003-08-31 03:00:15 +02:00
|
|
|
</small>
|
|
|
|
|
</p>
|
|
|
|
|
</center>
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|
