ftpclient.sgml

来自「eCos操作系统源码」· SGML 代码 · 共 120 行

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<PART ID="net-ftpclient">
<TITLE>FTP Client for eCos TCP/IP Stack</TITLE>
<PARTINTRO>
<PARA>
The ftpclient package provides an FTP (File Transfer Protocol) client
for use with the TCP/IP stack in eCos. It supports both IPv4 and IPv6
and will use the DNS client, when its is part of the eCos configuration.
</PARA>
</PARTINTRO>
<CHAPTER id="net-ftpclient-features">
<TITLE>FTP Client Features</TITLE>
<SECT1 id="net-ftpclient-features-api">
<TITLE>FTP Client API</TITLE>
<para>
This package implements an FTP client.  The API is in include file
<filename>install/include/ftpclient.h</filename> and it can be used thus:
<programlisting>
#include &lt;network.h&gt;
#include &lt;ftpclient.h&gt;
</programlisting>
It looks like this:
</para>
<sect2 id="net-ftpclient-features-api-get">
<title>ftp_get</title>
<programlisting>
int ftp_get(char &ast; hostname, 
            char &ast; username, 
            char &ast; passwd, 
            char &ast; filename, 
            char &ast; buf, 
            unsigned buf_size,
            ftp_printf_t ftp_printf);
</programlisting>
<para>
Use the FTP protocol to retrieve a file from a server. Only binary
mode is supported. The filename can include a directory name. Only
use unix style &lsquo;/&rsquo; file separators,
not &lsquo;\&rsquo;.
The file is placed into <parameter>buf</parameter>.
<parameter>buf</parameter> has maximum size <parameter>buf_size</parameter>.
If the file is bigger than this, the
transfer fails and <errorcode>FTP_TOOBIG</errorcode> is returned.
Other error codes listed in the header can also be returned.
If the transfer is successful the number of bytes received is returned.
</para>
</sect2>
<sect2 id="net-ftpclient-features-api-put">
<title>ftp_put</title>
<programlisting>
int ftp_put(char &ast; hostname, 
            char &ast; username, 
            char &ast; passwd, 
            char &ast; filename, 
            char &ast; buf, 
            unsigned buf_size,
            ftp_printf_t ftp_printf);
</programlisting>
<para>
Use the FTP protocol to send a file to a server.
Only binary
mode is supported. The filename can include a directory name. Only
use unix style &lsquo;/&rsquo; file separators,
not &lsquo;\&rsquo;.
The contents of <parameter>buf</parameter> are placed into the file on the
server. If an error occurs one of the codes listed will be returned. If the
transfer is successful zero is returned.
</para>
</sect2>
<sect2 id="net-ftpclient-features-api-printf">
<title>ftpclient_printf</title>
<programlisting>
void ftpclient_printf(unsigned error, const char *fmt, ...);
</programlisting>
<para>
<function>ftp_get()</function> and <function>ftp_put</function>
take a pointer to a function to use for printing
out diagnostic and error messages. This is a sample implementation
which can be used if you don't want to implement the function
yourself.
<parameter>error</parameter> will be true when the message to print is an
error message. Otherwise the message is diagnostic, eg. the commands sent
and received from the server.
</para>
</sect2>
</SECT1>
</CHAPTER>
</PART>