root/ext/ftp/ftp.h

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/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Andrew Skalski <askalski@chek.com>                          |
   |          Stefan Esser <sesser@php.net> (resume functions)            |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#ifndef FTP_H
#define FTP_H

#include "php_network.h"

#include <stdio.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif

#define FTP_DEFAULT_TIMEOUT     90
#define FTP_DEFAULT_AUTOSEEK 1
#define PHP_FTP_FAILED                  0
#define PHP_FTP_FINISHED                1
#define PHP_FTP_MOREDATA                2

/* XXX this should be configurable at runtime XXX */
#define FTP_BUFSIZE     4096

typedef enum ftptype {
        FTPTYPE_ASCII=1,
        FTPTYPE_IMAGE
} ftptype_t;

typedef struct databuf
{
        int             listener;               /* listener socket */
        php_socket_t            fd;                     /* data connection */
        ftptype_t       type;                   /* transfer type */
        char            buf[FTP_BUFSIZE];       /* data buffer */
#if HAVE_OPENSSL_EXT
        SSL             *ssl_handle;    /* ssl handle */
        int             ssl_active;             /* flag if ssl is active or not */
#endif
} databuf_t;

typedef struct ftpbuf
{
        php_socket_t            fd;                     /* control connection */
        php_sockaddr_storage    localaddr;      /* local address */
        int             resp;                   /* last response code */
        char            inbuf[FTP_BUFSIZE];     /* last response text */
        char            *extra;                 /* extra characters */
        int             extralen;               /* number of extra chars */
        char            outbuf[FTP_BUFSIZE];    /* command output buffer */
        char            *pwd;                   /* cached pwd */
        char            *syst;                  /* cached system type */
        ftptype_t       type;                   /* current transfer type */
        int             pasv;                   /* 0=off; 1=pasv; 2=ready */
        php_sockaddr_storage    pasvaddr;       /* passive mode address */
        long    timeout_sec;    /* User configureable timeout (seconds) */
        int                     autoseek;       /* User configureable autoseek flag */

        int                             nb;             /* "nonblocking" transfer in progress */
        databuf_t               *data;  /* Data connection for "nonblocking" transfers */
        php_stream              *stream; /* output stream for "nonblocking" transfers */
        int                             lastch;         /* last char of previous call */
        int                             direction;      /* recv = 0 / send = 1 */
        int                             closestream;/* close or not close stream */
#if HAVE_OPENSSL_EXT
        int                             use_ssl; /* enable(1) or disable(0) ssl */
        int                             use_ssl_for_data; /* en/disable ssl for the dataconnection */
        int                             old_ssl;        /* old mode = forced data encryption */
        SSL                             *ssl_handle;      /* handle for control connection */
        int                             ssl_active;               /* ssl active on control conn */
#endif

} ftpbuf_t;



/* open a FTP connection, returns ftpbuf (NULL on error)
 * port is the ftp port in network byte order, or 0 for the default
 */
ftpbuf_t*       ftp_open(const char *host, short port, long timeout_sec TSRMLS_DC);

/* quits from the ftp session (it still needs to be closed)
 * return true on success, false on error
 */
int             ftp_quit(ftpbuf_t *ftp);

/* frees up any cached data held in the ftp buffer */
void            ftp_gc(ftpbuf_t *ftp);

/* close the FTP connection and return NULL */
ftpbuf_t*       ftp_close(ftpbuf_t *ftp);

/* logs into the FTP server, returns true on success, false on error */
int             ftp_login(ftpbuf_t *ftp, const char *user, const char *pass TSRMLS_DC);

/* reinitializes the connection, returns true on success, false on error */
int             ftp_reinit(ftpbuf_t *ftp);

/* returns the remote system type (NULL on error) */
const char*     ftp_syst(ftpbuf_t *ftp);

/* returns the present working directory (NULL on error) */
const char*     ftp_pwd(ftpbuf_t *ftp);

/* exec a command [special features], return true on success, false on error */
int     ftp_exec(ftpbuf_t *ftp, const char *cmd);

/* send a raw ftp command, return response as a hashtable, NULL on error */
void    ftp_raw(ftpbuf_t *ftp, const char *cmd, zval *return_value);

/* changes directories, return true on success, false on error */
int             ftp_chdir(ftpbuf_t *ftp, const char *dir);

/* changes to parent directory, return true on success, false on error */
int             ftp_cdup(ftpbuf_t *ftp);

/* creates a directory, return the directory name on success, NULL on error.
 * the return value must be freed
 */
char*           ftp_mkdir(ftpbuf_t *ftp, const char *dir);

/* removes a directory, return true on success, false on error */
int             ftp_rmdir(ftpbuf_t *ftp, const char *dir);

/* Set permissions on a file */
int             ftp_chmod(ftpbuf_t *ftp, const int mode, const char *filename, const int filename_len);

/* Allocate space on remote server with ALLO command
 * Many servers will respond with 202 Allocation not necessary,
 * however some servers will not accept STOR or APPE until ALLO is confirmed. 
 * If response is passed, it is estrdup()ed from ftp->inbuf and must be freed
 * or assigned to a zval returned to the user */
int             ftp_alloc(ftpbuf_t *ftp, const long size, char **response);

/* returns a NULL-terminated array of filenames in the given path
 * or NULL on error.  the return array must be freed (but don't
 * free the array elements)
 */
char**          ftp_nlist(ftpbuf_t *ftp, const char *path TSRMLS_DC);

/* returns a NULL-terminated array of lines returned by the ftp
 * LIST command for the given path or NULL on error.  the return
 * array must be freed (but don't
 * free the array elements)
 */
char**          ftp_list(ftpbuf_t *ftp, const char *path, int recursive TSRMLS_DC);

/* switches passive mode on or off
 * returns true on success, false on error
 */
int             ftp_pasv(ftpbuf_t *ftp, int pasv);

/* retrieves a file and saves its contents to outfp
 * returns true on success, false on error
 */
int             ftp_get(ftpbuf_t *ftp, php_stream *outstream, const char *path, ftptype_t type, long resumepos TSRMLS_DC);

/* stores the data from a file, socket, or process as a file on the remote server
 * returns true on success, false on error
 */
int             ftp_put(ftpbuf_t *ftp, const char *path, php_stream *instream, ftptype_t type, long startpos TSRMLS_DC);

/* returns the size of the given file, or -1 on error */
long            ftp_size(ftpbuf_t *ftp, const char *path);

/* returns the last modified time of the given file, or -1 on error */
time_t          ftp_mdtm(ftpbuf_t *ftp, const char *path);

/* renames a file on the server */
int             ftp_rename(ftpbuf_t *ftp, const char *src, const char *dest);

/* deletes the file from the server */
int             ftp_delete(ftpbuf_t *ftp, const char *path);

/* sends a SITE command to the server */
int             ftp_site(ftpbuf_t *ftp, const char *cmd);

/* retrieves part of a file and saves its contents to outfp
 * returns true on success, false on error
 */
int             ftp_nb_get(ftpbuf_t *ftp, php_stream *outstream, const char *path, ftptype_t type, long resumepos TSRMLS_DC);

/* stores the data from a file, socket, or process as a file on the remote server
 * returns true on success, false on error
 */
int             ftp_nb_put(ftpbuf_t *ftp, const char *path, php_stream *instream, ftptype_t type, long startpos TSRMLS_DC);

/* continues a previous nb_(f)get command
 */
int             ftp_nb_continue_read(ftpbuf_t *ftp TSRMLS_DC);

/* continues a previous nb_(f)put command
 */
int             ftp_nb_continue_write(ftpbuf_t *ftp TSRMLS_DC);


#endif

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