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# nanoftp

## Name

nanoftp --

## Synopsis

    void        (*ftpListCallback)              (void *userData,
                                                 const char *filename,
                                                 const char *attrib,
                                                 const char *owner,
                                                 const char *group,
                                                 unsigned long size,
                                                 int links,
                                                 int year,
                                                 const char *month,
                                                 int day,
                                                 int hour,
                                                 int minute);
    void        (*ftpDataCallback)              (void *userData,
                                                 const char *data,
                                                 int len);
    void        xmlNanoFTPInit                  (void);
    void        xmlNanoFTPCleanup               (void);
    void*       xmlNanoFTPNewCtxt               (const char *URL);
    void        xmlNanoFTPFreeCtxt              (void *ctx);
    void*       xmlNanoFTPConnectTo             (const char *server,
                                                 int port);
    void*       xmlNanoFTPOpen                  (const char *URL);
    int         xmlNanoFTPConnect               (void *ctx);
    int         xmlNanoFTPClose                 (void *ctx);
    int         xmlNanoFTPQuit                  (void *ctx);
    void        xmlNanoFTPScanProxy             (const char *URL);
    void        xmlNanoFTPProxy                 (const char *host,
                                                 int port,
                                                 const char *user,
                                                 const char *passwd,
                                                 int type);
    int         xmlNanoFTPUpdateURL             (void *ctx,
                                                 const char *URL);
    int         xmlNanoFTPGetResponse           (void *ctx);
    int         xmlNanoFTPCheckResponse         (void *ctx);
    int         xmlNanoFTPCwd                   (void *ctx,
                                                 char *directory);
    int         xmlNanoFTPGetConnection         (void *ctx);
    int         xmlNanoFTPCloseConnection       (void *ctx);
    int         xmlNanoFTPList                  (void *ctx,
                                                 ftpListCallback callback,
                                                 void *userData,
                                                 char *filename);
    int         xmlNanoFTPGetSocket             (void *ctx,
                                                 const char *filename);
    int         xmlNanoFTPGet                   (void *ctx,
                                                 ftpDataCallback callback,
                                                 void *userData,
                                                 const char *filename);
    int         xmlNanoFTPRead                  (void *ctx,
                                                 void *dest,
                                                 int len);

## Description

## Details

### ftpListCallback ()

    void        (*ftpListCallback)              (void *userData,
                                                 const char *filename,
                                                 const char *attrib,
                                                 const char *owner,
                                                 const char *group,
                                                 unsigned long size,
                                                 int links,
                                                 int year,
                                                 const char *month,
                                                 int day,
                                                 int hour,
                                                 int minute);

`userData` : |
`filename` : |
`attrib` : |
`owner` : |
`group` : |
`size` : |
`links` : |
`year` : |
`month` : |
`day` : |
`hour` : |
`minute` : |

### ftpDataCallback ()

    void        (*ftpDataCallback)              (void *userData,
                                                 const char *data,
                                                 int len);

`userData` : |
`data` : |
`len` : |

### xmlNanoFTPInit ()

    void        xmlNanoFTPInit                  (void);

Initialize the FTP protocol layer. Currently it just checks for proxy informations, and get the hostname

### xmlNanoFTPCleanup ()

    void        xmlNanoFTPCleanup               (void);

### xmlNanoFTPNewCtxt ()

    void*       xmlNanoFTPNewCtxt               (const char *URL);

Allocate and initialize a new FTP context.

`URL` : | The URL used to initialize the context

### xmlNanoFTPFreeCtxt ()

    void        xmlNanoFTPFreeCtxt              (void *ctx);

Frees the context after closing the connection.

`ctx` : | an FTP context

### xmlNanoFTPConnectTo ()

    void*       xmlNanoFTPConnectTo             (const char *server,
                                                 int port);

Tries to open a control connection to the given server/port

`server` : | an FTP server name
`port` : | the port (use 21 if 0)

### xmlNanoFTPOpen ()

    void*       xmlNanoFTPOpen                  (const char *URL);

Start to fetch the given ftp:// resource

`URL` : | the URL to the resource

### xmlNanoFTPConnect ()

    int         xmlNanoFTPConnect               (void *ctx);

Tries to open a control connection

`ctx` : | an FTP context
Returns : | -1 in case of error, 0 otherwise

### xmlNanoFTPClose ()

    int         xmlNanoFTPClose                 (void *ctx);

Close the connection and both control and transport

`ctx` : | an FTP context
Returns : | -1 incase of error, 0 otherwise

### xmlNanoFTPQuit ()

    int         xmlNanoFTPQuit                  (void *ctx);

Send a QUIT command to the server

`ctx` : | an FTP context
Returns : | -1 in case of error, 0 otherwise

### xmlNanoFTPScanProxy ()

    void        xmlNanoFTPScanProxy             (const char *URL);

(Re)Initialize the FTP Proxy context by parsing the URL and finding the protocol host port it indicates. Should be like ftp://myproxy/ or ftp://myproxy:3128/ A NULL URL cleans up proxy informations.

`URL` : | The proxy URL used to initialize the proxy context

### xmlNanoFTPProxy ()

    void        xmlNanoFTPProxy                 (const char *host,
                                                 int port,
                                                 const char *user,
                                                 const char *passwd,
                                                 int type);

Setup the FTP proxy informations. This can also be done by using ftp_proxy ftp_proxy_user and ftp_proxy_password environment variables.

`host` : | the proxy host name
`port` : | the proxy port
`user` : | the proxy user name
`passwd` : | the proxy password
`type` : | the type of proxy 1 for using SITE, 2 for USER a`b`

### xmlNanoFTPUpdateURL ()

    int         xmlNanoFTPUpdateURL             (void *ctx,
                                                 const char *URL);

Update an FTP context by parsing the URL and finding new path it indicates. If there is an error in the protocol, hostname, port or other information, the error is raised. It indicates a new connection has to be established.

`ctx` : | an FTP context
`URL` : | The URL used to update the context
Returns : | 0 if Ok, -1 in case of error (other host).

### xmlNanoFTPGetResponse ()

    int         xmlNanoFTPGetResponse           (void *ctx);

Get the response from the FTP server after a command.

`ctx` : | an FTP context
Returns : | the code number

### xmlNanoFTPCheckResponse ()

    int         xmlNanoFTPCheckResponse         (void *ctx);

Check if there is a response from the FTP server after a command.

`ctx` : | an FTP context
Returns : | the code number, or 0

### xmlNanoFTPCwd ()

    int         xmlNanoFTPCwd                   (void *ctx,
                                                 char *directory);

Tries to change the remote directory

`ctx` : | an FTP context
`directory` : | a directory on the server
Returns : | -1 incase of error, 1 if CWD worked, 0 if it failed

### xmlNanoFTPGetConnection ()

    int         xmlNanoFTPGetConnection         (void *ctx);

Try to open a data connection to the server. Currently only passive mode is supported.

`ctx` : | an FTP context
Returns : | -1 incase of error, 0 otherwise

### xmlNanoFTPCloseConnection ()

    int         xmlNanoFTPCloseConnection       (void *ctx);

Close the data connection from the server

`ctx` : | an FTP context
Returns : | -1 incase of error, 0 otherwise

### xmlNanoFTPList ()

    int         xmlNanoFTPList                  (void *ctx,
                                                 ftpListCallback callback,
                                                 void *userData,
                                                 char *filename);

Do a listing on the server. All files info are passed back in the callbacks.

`ctx` : | an FTP context
`callback` : | the user callback
`userData` : | the user callback data
`filename` : | optional files to list
Returns : | -1 incase of error, 0 otherwise

### xmlNanoFTPGetSocket ()

    int         xmlNanoFTPGetSocket             (void *ctx,
                                                 const char *filename);

Initiate fetch of the given file from the server.

`ctx` : | an FTP context
`filename` : | the file to retrieve (or NULL if path is in context).
Returns : | the socket for the data connection, or <0 in case of error

### xmlNanoFTPGet ()

    int         xmlNanoFTPGet                   (void *ctx,
                                                 ftpDataCallback callback,
                                                 void *userData,
                                                 const char *filename);

Fetch the given file from the server. All data are passed back in the callbacks. The last callback has a size of 0 block.

`ctx` : | an FTP context
`callback` : | the user callback
`userData` : | the user callback data
`filename` : | the file to retrieve
Returns : | -1 incase of error, 0 otherwise

### xmlNanoFTPRead ()

    int         xmlNanoFTPRead                  (void *ctx,
                                                 void *dest,
                                                 int len);

This function tries to read `len` bytes from the existing FTP connection and saves them in `dest`. This is a blocking call.

`ctx` : | the FTP context
`dest` : | a buffer
`len` : | the buffer length
Returns : | the number of byte read. 0 is an indication of an end of connection. -1 indicates a parameter error.

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