// enable > 2gb support (LFS)

#ifndef NOLFS
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#endif

#ifndef NOSSL
#include <openssl/ssl.h>
#endif

#include "ftplib.h"

#ifndef NOSSL
#include <openssl/ssl.h>
#endif

#if defined(_WIN32)
#include <windows.h>
#include <winsock.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <sys/types.h>

#if defined(_WIN32)
#define SETSOCKOPT_OPTVAL_TYPE (const char *)
#else
#define SETSOCKOPT_OPTVAL_TYPE (void *)
#endif

#if defined(_WIN32)
#define net_read(x,y,z) recv(x,(char*)y,z,0)
#define net_write(x,y,z) send(x,(char*)y,z,0)
#define net_close closesocket
#else
#define net_read read
#define net_write write
#define net_close close
#endif

#if defined(_WIN32)
typedef int socklen_t;
#endif

#if defined(_WIN32)
#define memccpy _memccpy
#define strdup _strdup
#endif

using namespace std;

/* socket values */
//#define SETSOCKOPT_OPTVAL_TYPE (void *)
#define FTPLIB_BUFSIZ 1024
#define ACCEPT_TIMEOUT 30

/* io types */
#define FTPLIB_CONTROL 0
#define FTPLIB_READ 1
#define FTPLIB_WRITE 2

/* win32 dll initializer */

#if defined(_WIN32)
BOOL APIENTRY DllMain (HINSTANCE hInst, DWORD reason, LPVOID reserved)
{
    switch (reason)
    {
        case DLL_PROCESS_ATTACH:
            break;
        case DLL_PROCESS_DETACH:
            break;
        case DLL_THREAD_ATTACH:
            break;
        case DLL_THREAD_DETACH:
            break;
    }

    /* Returns TRUE on success, FALSE on failure */
    return TRUE;
}
#endif

/*
 * Constructor
 */

ftplib::ftplib()
{
    #if defined(_WIN32)
    WSADATA wsa;
    if (WSAStartup(MAKEWORD(1, 1), &wsa))
    {
         printf("WSAStartup() failed, %lu\n", (unsigned long)GetLastError());
    }
    #endif

    #ifndef NOSSL
    SSL_library_init();
    #endif

    mp_ftphandle = static_cast<ftphandle *>(calloc(1,sizeof(ftphandle)));
    if (mp_ftphandle == NULL) perror("calloc");
    mp_ftphandle->buf = static_cast<char *>(malloc(FTPLIB_BUFSIZ));
    if (mp_ftphandle->buf == NULL)
    {
        perror("calloc");
        free(mp_ftphandle);
    }
    #ifndef NOSSL
    mp_ftphandle->ctx = SSL_CTX_new(_FTPLIB_SSL_CLIENT_METHOD_());
    SSL_CTX_set_verify(mp_ftphandle->ctx, SSL_VERIFY_NONE, NULL);
    mp_ftphandle->ssl = SSL_new(mp_ftphandle->ctx);
    #endif
    ClearHandle();
}

/*
 * Destructor
 */

ftplib::~ftplib()
{
    #ifndef NOSSL
    SSL_free(mp_ftphandle->ssl);
    SSL_CTX_free(mp_ftphandle->ctx);
    #endif
    free(mp_ftphandle->buf);
    free(mp_ftphandle);
}

void ftplib::sprint_rest(char *buf, off64_t offset) {
#if defined(__APPLE__)
        sprintf(buf,"REST %lld",offset);
#else
        sprintf(buf,"REST %ld",offset);
#endif
}

/*
 * socket_wait - wait for socket to receive or flush data
 *
 * return 1 if no user callback, otherwise, return value returned by
 * user callback
 */
int ftplib::socket_wait(ftphandle *ctl)
{
    fd_set fd,*rfd = NULL,*wfd = NULL;
    struct timeval tv;
    int rv = 0;

    if (ctl->idlecb == NULL) return 1;

    /*if ((ctl->dir == FTPLIB_CONTROL)
        || (ctl->idlecb == NULL)
        || ((ctl->idletime.tv_sec == 0)
        && //(ctl->idletime.tv_usec 0))
    return 1;*/

    if (ctl->dir == FTPLIB_WRITE) wfd = &fd;
    else rfd = &fd;

    FD_ZERO(&fd);
    do
    {
        FD_SET(ctl->handle,&fd);
        tv = ctl->idletime;
        rv = select(ctl->handle+1, rfd, wfd, NULL, &tv);
        if (rv == -1)
        {
            rv = 0;
            strncpy(ctl->ctrl->response, strerror(errno), sizeof(ctl->ctrl->response));
            break;
        }
        else if (rv > 0)
        {
            rv = 1;
            break;
        }
    } while ((rv = ctl->idlecb(ctl->cbarg)));

    return rv;
}

/*
 * read a line of text
 *
 * return -1 on error or bytecount
 */
int ftplib::readline(char *buf,int max,ftphandle *ctl)
{
    int x,retval = 0;
    char *end,*bp=buf;
    int eof = 0;

    if ((ctl->dir != FTPLIB_CONTROL) && (ctl->dir != FTPLIB_READ))
    return -1;
    if (max == 0)
    return 0;
    do
    {
        if (ctl->cavail > 0)
        {
            x = (max >= ctl->cavail) ? ctl->cavail : max-1;
            end = static_cast<char*>(memccpy(bp,ctl->cget,'\n',x));
            if (end != NULL)
            x = end - bp;
            retval += x;
            bp += x;
            *bp = '\0';
            max -= x;
            ctl->cget += x;
            ctl->cavail -= x;
            if (end != NULL)
            {
                bp -= 2;
                if (strcmp(bp,"\r\n") == 0)
                {
                    *bp++ = '\n';
                    *bp++ = '\0';
                    --retval;
                }
                break;
            }
        }
        if (max == 1)
        {
            *buf = '\0';
            break;
        }
        if (ctl->cput == ctl->cget)
        {
            ctl->cput = ctl->cget = ctl->buf;
            ctl->cavail = 0;
            ctl->cleft = FTPLIB_BUFSIZ;
        }
        if (eof)
        {
            if (retval == 0)
            retval = -1;
            break;
        }

        if (!socket_wait(ctl)) return retval;

#ifndef NOSSL
        if (ctl->tlsdata) x = SSL_read(ctl->ssl, ctl->cput, ctl->cleft);
        else
        {
            if (ctl->tlsctrl) x = SSL_read(ctl->ssl, ctl->cput, ctl->cleft);
            else x = net_read(ctl->handle,ctl->cput,ctl->cleft);
        }
#else
        x = net_read(ctl->handle,ctl->cput,ctl->cleft);
#endif
        if ( x == -1)
        {
            perror("read");
            retval = -1;
            break;
        }

        // LOGGING FUNCTIONALITY!!!

        if ((ctl->dir == FTPLIB_CONTROL) && (mp_ftphandle->logcb != NULL))
        {
            *((ctl->cput)+x) = '\0';
            mp_ftphandle->logcb(ctl->cput, mp_ftphandle->cbarg, true);
        }

        if (x == 0) eof = 1;
        ctl->cleft -= x;
        ctl->cavail += x;
        ctl->cput += x;
    } while (1);
    return retval;
}

/*
 * write lines of text
 *
 * return -1 on error or bytecount
 */
int ftplib::writeline(char *buf, int len, ftphandle *nData)
{
    int x, nb=0, w;
    char *ubp = buf, *nbp;
    char lc=0;

    if (nData->dir != FTPLIB_WRITE)
    return -1;
    nbp = nData->buf;
    for (x=0; x < len; x++)
    {
        if ((*ubp == '\n') && (lc != '\r'))
        {
            if (nb == FTPLIB_BUFSIZ)
            {
                if (!socket_wait(nData)) return x;
#ifndef NOSSL
                if (nData->tlsctrl) w = SSL_write(nData->ssl, nbp, FTPLIB_BUFSIZ);
                else w = net_write(nData->handle, nbp, FTPLIB_BUFSIZ);
#else
                w = net_write(nData->handle, nbp, FTPLIB_BUFSIZ);
#endif
                if (w != FTPLIB_BUFSIZ)
                {
                    printf("write(1) returned %d, errno = %d\n", w, errno);
                    return(-1);
                }
                nb = 0;
            }
            nbp[nb++] = '\r';
        }
        if (nb == FTPLIB_BUFSIZ)
        {
            if (!socket_wait(nData))
            return x;
#ifndef NOSSL
            if (nData->tlsctrl) w = SSL_write(nData->ssl, nbp, FTPLIB_BUFSIZ);
            else w = net_write(nData->handle, nbp, FTPLIB_BUFSIZ);
#else
            w = net_write(nData->handle, nbp, FTPLIB_BUFSIZ);
#endif
            if (w != FTPLIB_BUFSIZ)
            {
                printf("write(2) returned %d, errno = %d\n", w, errno);
                return(-1);
            }
            nb = 0;
        }
        nbp[nb++] = lc = *ubp++;
    }
    if (nb)
    {
        if (!socket_wait(nData)) return x;
#ifndef NOSSL
        if (nData->tlsctrl) w = SSL_write(nData->ssl, nbp, nb);
        else w = net_write(nData->handle, nbp, nb);
#else
        w = net_write(nData->handle, nbp, nb);
#endif
        if (w != nb)
        {
            printf("write(3) returned %d, errno = %d\n", w, errno);
            return(-1);
        }
    }
    return len;
}

/*
 * read a response from the server
 *
 * return 0 if first char doesn't match
 * return 1 if first char matches
 */
int ftplib::readresp(char c, ftphandle *nControl)
{
    char match[5];

    if (readline(nControl->response,256,nControl) == -1)
    {
        perror("Control socket read failed");
        return 0;
    }

    if (nControl->response[3] == '-')
    {
        strncpy(match,nControl->response,3);
        match[3] = ' ';
        match[4] = '\0';
        do
        {
            if (readline(nControl->response,256,nControl) == -1)
            {
                perror("Control socket read failed");
                return 0;
            }
        } while (strncmp(nControl->response,match,4));
    }
    if (nControl->response[0] == c) return 1;
    return 0;
}

/*
 * FtpLastResponse - return a pointer to the last response received
 */
char* ftplib::LastResponse()
{
    if ((mp_ftphandle) && (mp_ftphandle->dir == FTPLIB_CONTROL)) return mp_ftphandle->response;
    return NULL;
}

/*
 * ftplib::Connect - connect to remote server
 *
 * return 1 if connected, 0 if not
 */
int ftplib::Connect(const char *host)
{
    int sControl;
    struct sockaddr_in sin;
    struct hostent *phe;
    struct servent *pse;
    int on=1;
    [[maybe_unused]] int ret;
    char *lhost;
    char *pnum;

    mp_ftphandle->dir = FTPLIB_CONTROL;
    mp_ftphandle->ctrl = NULL;
    mp_ftphandle->xfered = 0;
    mp_ftphandle->xfered1 = 0;
#ifndef NOSSL
    mp_ftphandle->tlsctrl = 0;
    mp_ftphandle->tlsdata = 0;
#endif
    mp_ftphandle->offset = 0;
    mp_ftphandle->handle = 0;

    memset(&sin,0,sizeof(sin));
    sin.sin_family = AF_INET;
    lhost = strdup(host);
    pnum = strchr(lhost,':');
    if (pnum == NULL)
    {
        if ((pse = getservbyname("ftp","tcp")) == NULL)
        {
            perror("getservbyname");
            free(lhost);
            return 0;
        }
        sin.sin_port = pse->s_port;
    }
    else
    {
        *pnum++ = '\0';
        if (isdigit(*pnum)) sin.sin_port = htons(atoi(pnum));
        else
        {
            pse = getservbyname(pnum,"tcp");
            sin.sin_port = pse->s_port;
        }
    }

#if defined(_WIN32)
    if ((sin.sin_addr.s_addr = inet_addr(lhost)) == -1)
#else
    ret = inet_aton(lhost, &sin.sin_addr);
    if (ret == 0)
#endif
    {
        if ((phe = gethostbyname(lhost)) == NULL)
        {
            perror("gethostbyname");
            free(lhost);
            return 0;
        }
        memcpy((char *)&sin.sin_addr, phe->h_addr, phe->h_length);
    }

    free(lhost);

    sControl = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (sControl == -1)
    {
        perror("socket");
        return 0;
    }

    if (setsockopt(sControl,SOL_SOCKET,SO_REUSEADDR, SETSOCKOPT_OPTVAL_TYPE &on, sizeof(on)) == -1)
    {
        perror("setsockopt");
        net_close(sControl);
        return 0;
    }
    if (connect(sControl, (struct sockaddr *)&sin, sizeof(sin)) == -1)
    {
        perror("connect");
        net_close(sControl);
        return 0;
    }

    mp_ftphandle->handle = sControl;

    if (readresp('2', mp_ftphandle) == 0)
    {
        net_close(sControl);
        mp_ftphandle->handle = 0;
        return 0;
    }

    return 1;
}

/*
 * FtpSendCmd - send a command and wait for expected response
 *
 * return 1 if proper response received, 0 otherwise
 */
int ftplib::FtpSendCmd(const char *cmd, char expresp, ftphandle *nControl)
{
    char buf[256];
    int x;

    if (!nControl->handle) return 0;

    if (nControl->dir != FTPLIB_CONTROL) return 0;
    sprintf(buf,"%s\r\n",cmd);

#ifndef NOSSL
    if (nControl->tlsctrl) x = SSL_write(nControl->ssl,buf,strlen(buf));
    else x = net_write(nControl->handle,buf,strlen(buf));
#else
    x = net_write(nControl->handle,buf,strlen(buf));
#endif
    if (x <= 0)
    {
        perror("write");
        return 0;
    }

    if (mp_ftphandle->logcb != NULL) mp_ftphandle->logcb(buf, mp_ftphandle->cbarg, false);

    return readresp(expresp, nControl);
}

/*
 * FtpLogin - log in to remote server
 *
 * return 1 if logged in, 0 otherwise
 */
int ftplib::Login(const char *user, const char *pass)
{
    char tempbuf[64];

    if (((strlen(user) + 7) > sizeof(tempbuf)) || ((strlen(pass) + 7) > sizeof(tempbuf))) return 0;
    sprintf(tempbuf, "USER %s", user);
    if (!FtpSendCmd(tempbuf,'3',mp_ftphandle))
    {
        if (mp_ftphandle->ctrl != NULL) return 1;
        if (*LastResponse() == '2') return 1;
        return 0;
    }
    sprintf(tempbuf,"PASS %s",pass);
    return FtpSendCmd(tempbuf,'2',mp_ftphandle);
}

/*
 * FtpAcceptConnection - accept connection from server
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::FtpAcceptConnection(ftphandle *nData, ftphandle *nControl)
{
    int sData;
    struct sockaddr addr;
    socklen_t l;
    int i;
    struct timeval tv;
    fd_set mask;
    int rv = 0;

    FD_ZERO(&mask);
    FD_SET(nControl->handle, &mask);
    FD_SET(nData->handle, &mask);
    tv.tv_usec = 0;
    tv.tv_sec = ACCEPT_TIMEOUT;
    i = nControl->handle;
    if (i < nData->handle) i = nData->handle;
    i = select(i+1, &mask, NULL, NULL, &tv);

    if (i == -1)
    {
        strncpy(nControl->response, strerror(errno), sizeof(nControl->response));
        net_close(nData->handle);
        nData->handle = 0;
        rv = 0;
    }
    else if (i == 0)
    {
        strcpy(nControl->response, "timed out waiting for connection");
        net_close(nData->handle);
        nData->handle = 0;
        rv = 0;
    }
    else
    {
        if (FD_ISSET(nData->handle, &mask))
        {
            l = sizeof(addr);
            sData = accept(nData->handle, &addr, &l);
            i = errno;
            net_close(nData->handle);
            if (sData > 0)
            {
                rv = 1;
                nData->handle = sData;
                nData->ctrl = nControl;
            }
            else
            {
                strncpy(nControl->response, strerror(i), sizeof(nControl->response));
                nData->handle = 0;
                rv = 0;
            }
        }
        else if (FD_ISSET(nControl->handle, &mask))
        {
            net_close(nData->handle);
            nData->handle = 0;
            readresp('2', nControl);
            rv = 0;
        }
    }
    return rv;
}

/*
 * FtpAccess - return a handle for a data stream
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::FtpAccess(const char *path, accesstype type, transfermode mode, ftphandle *nControl, ftphandle **nData)
{
    char buf[256];
    int dir;

    if ((path == NULL) && ((type == ftplib::filewrite)
        || (type == ftplib::fileread)
        || (type == ftplib::filereadappend)
        || (type == ftplib::filewriteappend)))
    {
        sprintf(nControl->response,"Missing path argument for file transfer\n");
        return 0;
    }
    sprintf(buf, "TYPE %c", mode);
    if (!FtpSendCmd(buf, '2', nControl)) return 0;

    switch (type)
    {
    case ftplib::dir:
        strcpy(buf,"NLST");
        dir = FTPLIB_READ;
        break;
    case ftplib::dirverbose:
        strcpy(buf,"LIST");
        dir = FTPLIB_READ;
        break;
    case ftplib::filereadappend:
    case ftplib::fileread:
        strcpy(buf,"RETR");
        dir = FTPLIB_READ;
        break;
    case ftplib::filewriteappend:
    case ftplib::filewrite:
        strcpy(buf,"STOR");
        dir = FTPLIB_WRITE;
        break;
    default:
        sprintf(nControl->response, "Invalid open type %d\n", type);
        return 0;
    }
    if (path != NULL)
    {
        int i = strlen(buf);
        buf[i++] = ' ';
        if ((strlen(path) + i) >= sizeof(buf)) return 0;
        strcpy(&buf[i],path);
    }

    if (nControl->cmode == ftplib::pasv)
    {
        if (FtpOpenPasv(nControl, nData, mode, dir, buf) == -1) return 0;
    }

    if (nControl->cmode == ftplib::port)
    {
        if (FtpOpenPort(nControl, nData, mode, dir, buf) == -1) return 0;
        if (!FtpAcceptConnection(*nData,nControl))
        {
            FtpClose(*nData);
            *nData = NULL;
            return 0;
        }
    }

#ifndef NOSSL
    if (nControl->tlsdata)
    {
        (*nData)->ssl = SSL_new(nControl->ctx);
        (*nData)->sbio = BIO_new_socket((*nData)->handle, BIO_NOCLOSE);
        SSL_set_bio((*nData)->ssl,(*nData)->sbio,(*nData)->sbio);
        ret = SSL_connect((*nData)->ssl);
        if (ret != 1) return 0;
        (*nData)->tlsdata = 1;
    }
#endif
    return 1;
}

/*
 * FtpOpenPort - Establishes a PORT connection for data transfer
 *
 * return 1 if successful, -1 otherwise
 */
int ftplib::FtpOpenPort(ftphandle *nControl, ftphandle **nData, transfermode mode, int dir, char *cmd)
{
    int sData;
    union {
    struct sockaddr sa;
    struct sockaddr_in in;
    } sin;
    struct linger lng = { 0, 0 };
    socklen_t l;
    int on=1;
    ftphandle *ctrl;
    char buf[256];

    if (nControl->dir != FTPLIB_CONTROL) return -1;
    if ((dir != FTPLIB_READ) && (dir != FTPLIB_WRITE))
    {
        sprintf(nControl->response, "Invalid direction %d\n", dir);
        return -1;
    }
    if ((mode != ftplib::ascii) && (mode != ftplib::image))
    {
        sprintf(nControl->response, "Invalid mode %c\n", mode);
        return -1;
    }
    l = sizeof(sin);

    if (getsockname(nControl->handle, &sin.sa, &l) < 0)
    {
        perror("getsockname");
        return -1;
    }

    sData = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
    if (sData == -1)
    {
        perror("socket");
        return -1;
    }
    if (setsockopt(sData,SOL_SOCKET,SO_REUSEADDR, SETSOCKOPT_OPTVAL_TYPE &on,sizeof(on)) == -1)
    {
        perror("setsockopt");
        net_close(sData);
        return -1;
    }
    if (setsockopt(sData,SOL_SOCKET,SO_LINGER, SETSOCKOPT_OPTVAL_TYPE &lng,sizeof(lng)) == -1)
    {
        perror("setsockopt");
        net_close(sData);
        return -1;
    }

    sin.in.sin_port = 0;
    if (bind(sData, &sin.sa, sizeof(sin)) == -1)
    {
        perror("bind");
        net_close(sData);
        return -1;
    }
    if (listen(sData, 1) < 0)
    {
        perror("listen");
        net_close(sData);
        return -1;
    }
    if (getsockname(sData, &sin.sa, &l) < 0) return 0;
    sprintf(buf, "PORT %hhu,%hhu,%hhu,%hhu,%hhu,%hhu",
        (unsigned char) sin.sa.sa_data[2],
        (unsigned char) sin.sa.sa_data[3],
        (unsigned char) sin.sa.sa_data[4],
        (unsigned char) sin.sa.sa_data[5],
        (unsigned char) sin.sa.sa_data[0],
        (unsigned char) sin.sa.sa_data[1]);
    if (!FtpSendCmd(buf,'2',nControl))
    {
        net_close(sData);
        return -1;
    }

    if (mp_ftphandle->offset != 0)
    {
    char buf[256];
  sprint_rest(buf, mp_ftphandle->offset);
    if (!FtpSendCmd(buf,'3',nControl))
    {
        net_close(sData);
        return 0;
    }
    }

    ctrl = static_cast<ftphandle*>(calloc(1,sizeof(ftphandle)));
    if (ctrl == NULL)
    {
        perror("calloc");
        net_close(sData);
        return -1;
    }
    if ((mode == 'A') && ((ctrl->buf = static_cast<char*>(malloc(FTPLIB_BUFSIZ))) == NULL))
    {
        perror("calloc");
        net_close(sData);
        free(ctrl);
        return -1;
    }

    if (!FtpSendCmd(cmd, '1', nControl))
    {
        FtpClose(*nData);
        *nData = NULL;
        return -1;
    }

    ctrl->handle = sData;
    ctrl->dir = dir;
    ctrl->ctrl = (nControl->cmode == ftplib::pasv) ? nControl : NULL;
    ctrl->idletime = nControl->idletime;
    ctrl->cbarg = nControl->cbarg;
    ctrl->xfered = 0;
    ctrl->xfered1 = 0;
    ctrl->cbbytes = nControl->cbbytes;
    if (ctrl->idletime.tv_sec || ctrl->idletime.tv_usec) ctrl->idlecb = nControl->idlecb;
    else ctrl->idlecb = NULL;
    if (ctrl->cbbytes ) ctrl->xfercb = nControl->xfercb;
    else ctrl->xfercb = NULL;
    *nData = ctrl;

    return 1;
}

/*
 * FtpOpenPasv - Establishes a PASV connection for data transfer
 *
 * return 1 if successful, -1 otherwise
 */
int ftplib::FtpOpenPasv(ftphandle *nControl, ftphandle **nData, transfermode mode, int dir, char *cmd)
{
    int sData;
    union {
        struct sockaddr sa;
        struct sockaddr_in in;
    } sin;
    struct linger lng = { 0, 0 };
    unsigned int l;
    int on=1;
    ftphandle *ctrl;
    char *cp;
    unsigned char v[6];
    int ret;

    if (nControl->dir != FTPLIB_CONTROL) return -1;
    if ((dir != FTPLIB_READ) && (dir != FTPLIB_WRITE))
    {
        sprintf(nControl->response, "Invalid direction %d\n", dir);
        return -1;
    }
    if ((mode != ftplib::ascii) && (mode != ftplib::image))
    {
        sprintf(nControl->response, "Invalid mode %c\n", mode);
        return -1;
    }
    l = sizeof(sin);

    memset(&sin, 0, l);
    sin.in.sin_family = AF_INET;
    if (!FtpSendCmd("PASV",'2',nControl)) return -1;
    cp = strchr(nControl->response,'(');
    if (cp == NULL) return -1;
    cp++;
#if defined(_WIN32)
    unsigned int v_i[6];
    sscanf(cp,"%u,%u,%u,%u,%u,%u",&v_i[2],&v_i[3],&v_i[4],&v_i[5],&v_i[0],&v_i[1]);
    for (int i = 0; i < 6; i++) v[i] = (unsigned char) v_i[i];
#else
    sscanf(cp,"%hhu,%hhu,%hhu,%hhu,%hhu,%hhu",&v[2],&v[3],&v[4],&v[5],&v[0],&v[1]);
#endif
    if (nControl->correctpasv) if (!CorrectPasvResponse(v)) return -1;
    sin.sa.sa_data[2] = v[2];
    sin.sa.sa_data[3] = v[3];
    sin.sa.sa_data[4] = v[4];
    sin.sa.sa_data[5] = v[5];
    sin.sa.sa_data[0] = v[0];
    sin.sa.sa_data[1] = v[1];

    if (mp_ftphandle->offset != 0)
    {
        char buf[256];
    sprint_rest(buf, mp_ftphandle->offset);
        if (!FtpSendCmd(buf,'3',nControl)) return 0;
    }

    sData = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
    if (sData == -1)
    {
        perror("socket");
        return -1;
    }
    if (setsockopt(sData,SOL_SOCKET,SO_REUSEADDR, SETSOCKOPT_OPTVAL_TYPE &on,sizeof(on)) == -1)
    {
        perror("setsockopt");
        net_close(sData);
        return -1;
    }
    if (setsockopt(sData,SOL_SOCKET,SO_LINGER, SETSOCKOPT_OPTVAL_TYPE &lng,sizeof(lng)) == -1)
    {
        perror("setsockopt");
        net_close(sData);
        return -1;
    }

    if (nControl->dir != FTPLIB_CONTROL) return -1;
    memcpy(cmd + strlen(cmd), "\r\n\0", 3);
#ifndef NOSSL
    if (nControl->tlsctrl) ret = SSL_write(nControl->ssl,cmd,strlen(cmd));
    else ret = net_write(nControl->handle,cmd,strlen(cmd));
#else
    ret = net_write(nControl->handle,cmd,strlen(cmd));
#endif
    if (ret <= 0)
    {
        perror("write");
        return -1;
    }

    if (connect(sData, &sin.sa, sizeof(sin.sa)) == -1)
    {
        perror("connect");
        net_close(sData);
        return -1;
    }
    if (!readresp('1', nControl))
    {
        net_close(sData);
        return -1;
    }
    ctrl = static_cast<ftphandle*>(calloc(1,sizeof(ftphandle)));
    if (ctrl == NULL)
    {
        perror("calloc");
        net_close(sData);
        return -1;
    }
    if ((mode == 'A') && ((ctrl->buf = static_cast<char*>(malloc(FTPLIB_BUFSIZ))) == NULL))
    {
        perror("calloc");
        net_close(sData);
        free(ctrl);
        return -1;
    }
    ctrl->handle = sData;
    ctrl->dir = dir;
    ctrl->ctrl = (nControl->cmode == ftplib::pasv) ? nControl : NULL;
    ctrl->idletime = nControl->idletime;
    ctrl->cbarg = nControl->cbarg;
    ctrl->xfered = 0;
    ctrl->xfered1 = 0;
    ctrl->cbbytes = nControl->cbbytes;
    if (ctrl->idletime.tv_sec || ctrl->idletime.tv_usec) ctrl->idlecb = nControl->idlecb;
    else ctrl->idlecb = NULL;
    if (ctrl->cbbytes ) ctrl->xfercb = nControl->xfercb;
    else ctrl->xfercb = NULL;
    *nData = ctrl;

    return 1;
}

/*
 * FtpClose - close a data connection
 */
int ftplib::FtpClose(ftphandle *nData)
{
    ftphandle *ctrl;

    if (nData->dir == FTPLIB_WRITE)
    {
        if (nData->buf != NULL) writeline(NULL, 0, nData);
    }
    else if (nData->dir != FTPLIB_READ) return 0;
    if (nData->buf) free(nData->buf);
    shutdown(nData->handle,2);
    net_close(nData->handle);

    ctrl = nData->ctrl;
#ifndef NOSSL
    SSL_free(nData->ssl);
#endif
    free(nData);
    if (ctrl) return readresp('2', ctrl);
    return 1;
}

/*
 * FtpRead - read from a data connection
 */
int ftplib::FtpRead(void *buf, int max, ftphandle *nData)
{
    int i;

    if (nData->dir != FTPLIB_READ)
    return 0;
    if (nData->buf) i = readline(static_cast<char*>(buf), max, nData);
    else
    {
        i = socket_wait(nData);
        if (i != 1) return 0;
#ifndef NOSSL
        if (nData->tlsdata) i = SSL_read(nData->ssl, buf, max);
        else i = net_read(nData->handle,buf,max);
#else
        i = net_read(nData->handle,buf,max);
#endif
    }
    if (i == -1) return 0;
    nData->xfered += i;
    if (nData->xfercb && nData->cbbytes)
    {
        nData->xfered1 += i;
        if (nData->xfered1 > nData->cbbytes)
        {
            if (nData->xfercb(nData->xfered, nData->cbarg) == 0) return 0;
            nData->xfered1 = 0;
        }
    }
    return i;
}

/*
 * FtpWrite - write to a data connection
 */
int ftplib::FtpWrite(void *buf, int len, ftphandle *nData)
{
    int i;

    if (nData->dir != FTPLIB_WRITE) return 0;
    if (nData->buf) i = writeline(static_cast<char*>(buf), len, nData);
    else
    {
        socket_wait(nData);
#ifndef NOSSL
        if (nData->tlsdata) i = SSL_write(nData->ssl, buf, len);
        else i = net_write(nData->handle, buf, len);
#else
        i = net_write(nData->handle, buf, len);
#endif
    }
    if (i == -1) return 0;
    nData->xfered += i;

    if (nData->xfercb && nData->cbbytes)
    {
        nData->xfered1 += i;
        if (nData->xfered1 > nData->cbbytes)
        {
            if (nData->xfercb(nData->xfered, nData->cbarg) == 0) return 0;
            nData->xfered1 = 0;
        }
    }
    return i;
}

/*
 * FtpSite - send a SITE command
 *
 * return 1 if command successful, 0 otherwise
 */
int ftplib::Site(const char *cmd)
{
    char buf[256];

    if ((strlen(cmd) + 7) > sizeof(buf)) return 0;
    sprintf(buf,"SITE %s",cmd);
    if (!FtpSendCmd(buf,'2',mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpRaw - send a raw string
 *
 * return 1 if command successful, 0 otherwise
 */

int ftplib::Raw(const char *cmd)
{
    char buf[256];
    strncpy(buf, cmd, 256);
    if (!FtpSendCmd(buf,'2',mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpSysType - send a SYST command
 *
 * Fills in the user buffer with the remote system type.  If more
 * information from the response is required, the user can parse
 * it out of the response buffer returned by FtpLastResponse().
 *
 * return 1 if command successful, 0 otherwise
 */
int ftplib::SysType(char *buf, int max)
{
    int l = max;
    char *b = buf;
    char *s;
    if (!FtpSendCmd("SYST",'2',mp_ftphandle)) return 0;
    s = &mp_ftphandle->response[4];
    while ((--l) && (*s != ' ')) *b++ = *s++;
    *b++ = '\0';
    return 1;
}

/*
 * FtpMkdir - create a directory at server
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Mkdir(const char *path)
{
    char buf[256];

    if ((strlen(path) + 6) > sizeof(buf)) return 0;
    sprintf(buf,"MKD %s",path);
    if (!FtpSendCmd(buf,'2', mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpChdir - change path at remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Chdir(const char *path)
{
    char buf[256];

    if ((strlen(path) + 6) > sizeof(buf)) return 0;
    sprintf(buf,"CWD %s",path);
    if (!FtpSendCmd(buf,'2',mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpCDUp - move to parent directory at remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Cdup()
{
    if (!FtpSendCmd("CDUP",'2',mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpRmdir - remove directory at remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Rmdir(const char *path)
{
    char buf[256];

    if ((strlen(path) + 6) > sizeof(buf)) return 0;
    sprintf(buf,"RMD %s",path);
    if (!FtpSendCmd(buf,'2',mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpPwd - get working directory at remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Pwd(char *path, int max)
{
    int l = max;
    char *b = path;
    char *s;

    if (!FtpSendCmd("PWD",'2',mp_ftphandle)) return 0;
    s = strchr(mp_ftphandle->response, '"');
    if (s == NULL) return 0;
   s++;
    while ((--l) && (*s) && (*s != '"')) *b++ = *s++;
    *b = '\0';
    return 1;
}

/*
 * FtpXfer - issue a command and transfer data
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::FtpXfer(const char *localfile, const char *path, ftphandle *nControl, accesstype type, transfermode mode)
{
    int l,c;
    char *dbuf;
    FILE *local = NULL;
    ftphandle *nData;

    if (localfile != NULL)
    {
        char ac[3] = "  ";
        if ((type == ftplib::dir) || (type == ftplib::dirverbose)) { ac[0] = 'w'; ac[1] = '\0'; }
        if (type == ftplib::fileread) { ac[0] = 'w'; ac[1] = '\0'; }
        if (type == ftplib::filewriteappend) { ac[0] = 'r'; ac[1] = '\0'; }
        if (type == ftplib::filereadappend) { ac[0] = 'a'; ac[1] = '\0'; }
        if (type == ftplib::filewrite) { ac[0] = 'r'; ac[1] = '\0'; }
        if (mode == ftplib::image) ac[1] = 'b';

        local = fopen64(localfile, ac);
        if (local == NULL)
        {
            strncpy(nControl->response, strerror(errno), sizeof(nControl->response));
            return 0;
        }
        if (type == ftplib::filewriteappend) fseeko64(local,mp_ftphandle->offset,SEEK_SET);
    }
    if (local == NULL) local = ((type == ftplib::filewrite)
        || (type == ftplib::filewriteappend)) ? stdin : stdout;
    if (!FtpAccess(path, type, mode, nControl, &nData))
    {
        if (localfile != NULL) fclose(local);
        return 0;
    }

    dbuf = static_cast<char*>(malloc(FTPLIB_BUFSIZ));
    if ((type == ftplib::filewrite) || (type == ftplib::filewriteappend))
    {
        while ((l = fread(dbuf, 1, FTPLIB_BUFSIZ, local)) > 0)
        {
            if ((c = FtpWrite(dbuf, l, nData)) < l)
            {
                printf("short write: passed %d, wrote %d\n", l, c);
                break;
            }
        }
    }
    else
    {
        while ((l = FtpRead(dbuf, FTPLIB_BUFSIZ, nData)) > 0)
        {
            if (fwrite(dbuf, 1, l, local) <= 0)
            {
                perror("localfile write");
                break;
            }
        }
    }
    free(dbuf);
    fflush(local);
    if (localfile != NULL) fclose(local);
    return FtpClose(nData);
}

/*
 * FtpNlst - issue an NLST command and write response to output
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Nlst(const char *outputfile, const char *path)
{
    mp_ftphandle->offset = 0;
    return FtpXfer(outputfile, path, mp_ftphandle, ftplib::dir, ftplib::ascii);
}

/*
 * FtpDir - issue a LIST command and write response to output
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Dir(const char *outputfile, const char *path)
{
    mp_ftphandle->offset = 0;
    return FtpXfer(outputfile, path, mp_ftphandle, ftplib::dirverbose, ftplib::ascii);
}

/*
 * FtpSize - determine the size of a remote file
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Size(const char *path, int *size, transfermode mode)
{
   char cmd[256];
   int resp,sz,rv=1;

   if ((strlen(path) + 7) > sizeof(cmd)) return 0;

    sprintf(cmd, "TYPE %c", mode);
   if (!FtpSendCmd(cmd, '2', mp_ftphandle)) return 0;

    sprintf(cmd,"SIZE %s",path);
   if (!FtpSendCmd(cmd,'2',mp_ftphandle)) rv = 0;
   else
   {
        if (sscanf(mp_ftphandle->response, "%d %d", &resp, &sz) == 2) *size = sz;
        else rv = 0;
   }
   return rv;
}

/*
 * FtpModDate - determine the modification date of a remote file
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::ModDate(const char *path, char *dt, int max)
{
    char buf[256];
    int rv = 1;

    if ((strlen(path) + 7) > sizeof(buf)) return 0;
    sprintf(buf,"MDTM %s",path);
   if (!FtpSendCmd(buf,'2',mp_ftphandle)) rv = 0;
    else strncpy(dt, &mp_ftphandle->response[4], max);
    return rv;
}

/*
 * FtpGet - issue a GET command and write received data to output
 *
 * return 1 if successful, 0 otherwise
 */

int ftplib::Get(const char *outputfile, const char *path, transfermode mode, off64_t offset)
{
    mp_ftphandle->offset = offset;
    if (offset == 0) return FtpXfer(outputfile, path, mp_ftphandle, ftplib::fileread, mode);
    else return FtpXfer(outputfile, path, mp_ftphandle, ftplib::filereadappend, mode);
}

/*
 * FtpPut - issue a PUT command and send data from input
 *
 * return 1 if successful, 0 otherwise
 */

int ftplib::Put(const char *inputfile, const char *path, transfermode mode, off64_t offset)
{
    mp_ftphandle->offset = offset;
    if (offset == 0) return FtpXfer(inputfile, path, mp_ftphandle, ftplib::filewrite, mode);
    else return FtpXfer(inputfile, path, mp_ftphandle, ftplib::filewriteappend, mode);
}

int ftplib::Rename(const char *src, const char *dst)
{
    char cmd[256];

    if (((strlen(src) + 7) > sizeof(cmd)) || ((strlen(dst) + 7) > sizeof(cmd))) return 0;
    sprintf(cmd,"RNFR %s",src);
    if (!FtpSendCmd(cmd,'3',mp_ftphandle)) return 0;
    sprintf(cmd,"RNTO %s",dst);
    if (!FtpSendCmd(cmd,'2',mp_ftphandle)) return 0;

    return 1;
}

int ftplib::Delete(const char *path)
{
    char cmd[256];

    if ((strlen(path) + 7) > sizeof(cmd)) return 0;
    sprintf(cmd,"DELE %s",path);
    if (!FtpSendCmd(cmd,'2', mp_ftphandle)) return 0;
    return 1;
}

/*
 * FtpQuit - disconnect from remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Quit()
{
    if (mp_ftphandle->dir != FTPLIB_CONTROL) return 0;
    if (mp_ftphandle->handle == 0)
    {
        strcpy(mp_ftphandle->response, "error: no answer from server\n");
        return 0;
    }
    if (!FtpSendCmd("QUIT",'2',mp_ftphandle))
    {
        net_close(mp_ftphandle->handle);
        return 0;
    }
    else
    {
        net_close(mp_ftphandle->handle);
        return 1;
    }
}

int ftplib::Fxp(ftplib* src, ftplib* dst, const char *pathSrc, const char *pathDst, transfermode mode, fxpmethod method)
{
    char *cp;
    unsigned char v[6];
    char buf[256];
    int retval = 0;

    sprintf(buf, "TYPE %c", mode);
    if (!dst->FtpSendCmd(buf,'2',dst->mp_ftphandle)) return -1;
    if (!src->FtpSendCmd(buf,'2',src->mp_ftphandle)) return -1;

    if (method == ftplib::defaultfxp)
    {
        // PASV dst

        if (!dst->FtpSendCmd("PASV",'2',dst->mp_ftphandle)) return -1;
        cp = strchr(dst->mp_ftphandle->response,'(');
        if (cp == NULL) return -1;
        cp++;
#if defined(_WIN32)
        unsigned int v_i[6];
        sscanf(cp,"%u,%u,%u,%u,%u,%u",&v_i[2],&v_i[3],&v_i[4],&v_i[5],&v_i[0],&v_i[1]);
        for (int i = 0; i < 6; i++) v[i] = (unsigned char) v_i[i];
#else
        sscanf(cp,"%hhu,%hhu,%hhu,%hhu,%hhu,%hhu",&v[2],&v[3],&v[4],&v[5],&v[0],&v[1]);
#endif
        if (dst->mp_ftphandle->correctpasv) if (!dst->CorrectPasvResponse(v)) return -1;

        // PORT src

        sprintf(buf, "PORT %d,%d,%d,%d,%d,%d", v[2],v[3],v[4],v[5],v[0],v[1]);
        if (!src->FtpSendCmd(buf,'2',src->mp_ftphandle)) return -1;

        // RETR src

        strcpy(buf,"RETR");
        if (pathSrc != NULL)
        {
            int i = strlen(buf);
            buf[i++] = ' ';
            if ((strlen(pathSrc) + i) >= sizeof(buf)) return 0;
            strcpy(&buf[i],pathSrc);
        }
        if (!src->FtpSendCmd(buf, '1', src->mp_ftphandle)) return 0;

        // STOR dst

        strcpy(buf,"STOR");
        if (pathDst != NULL)
        {
            int i = strlen(buf);
            buf[i++] = ' ';
            if ((strlen(pathDst) + i) >= sizeof(buf)) return 0;
            strcpy(&buf[i],pathDst);
        }
        if (!dst->FtpSendCmd(buf, '1', dst->mp_ftphandle))
        {
            /* this closes the data connection, to abort the RETR on
            the source ftp. all hail pftp, it took me several
            hours and i was absolutely clueless, playing around with
            ABOR and whatever, when i desperately checked the pftp
            source which gave me this final hint. thanks dude(s). */

            dst->FtpSendCmd("PASV", '2', dst->mp_ftphandle);
            src->readresp('4', src->mp_ftphandle);
            return 0;
        }

        retval = (src->readresp('2', src->mp_ftphandle)) & (dst->readresp('2', dst->mp_ftphandle));

    }
    else
    {
        // PASV src

        if (!src->FtpSendCmd("PASV",'2',src->mp_ftphandle)) return -1;
        cp = strchr(src->mp_ftphandle->response,'(');
        if (cp == NULL) return -1;
        cp++;
#if defined(_WIN32)
        unsigned int v_i[6];
        sscanf(cp,"%u,%u,%u,%u,%u,%u",&v_i[2],&v_i[3],&v_i[4],&v_i[5],&v_i[0],&v_i[1]);
        for (int i = 0; i < 6; i++) v[i] = (unsigned char) v_i[i];
#else
        sscanf(cp,"%hhu,%hhu,%hhu,%hhu,%hhu,%hhu",&v[2],&v[3],&v[4],&v[5],&v[0],&v[1]);
#endif
        if (src->mp_ftphandle->correctpasv) if (!src->CorrectPasvResponse(v)) return -1;

        // PORT dst

        sprintf(buf, "PORT %d,%d,%d,%d,%d,%d", v[2],v[3],v[4],v[5],v[0],v[1]);
        if (!dst->FtpSendCmd(buf,'2',dst->mp_ftphandle)) return -1;

        // STOR dest

        strcpy(buf,"STOR");
        if (pathDst != NULL)
        {
            int i = strlen(buf);
            buf[i++] = ' ';
            if ((strlen(pathDst) + i) >= sizeof(buf)) return 0;
            strcpy(&buf[i],pathDst);
        }
        if (!dst->FtpSendCmd(buf, '1', dst->mp_ftphandle)) return 0;

        // RETR src

        strcpy(buf,"RETR");
        if (pathSrc != NULL)
        {
            int i = strlen(buf);
            buf[i++] = ' ';
            if ((strlen(pathSrc) + i) >= sizeof(buf)) return 0;
            strcpy(&buf[i],pathSrc);
        }
        if (!src->FtpSendCmd(buf, '1', src->mp_ftphandle))
        {
            src->FtpSendCmd("PASV", '2', src->mp_ftphandle);
            dst->readresp('4', dst->mp_ftphandle);
            return 0;
        }

        // wait till its finished!

        retval = (src->readresp('2', src->mp_ftphandle)) & (dst->readresp('2', dst->mp_ftphandle));

    }

    return retval;
}

int ftplib::TestControlConnection()
{
    if (!FtpSendCmd("PASV",'2', mp_ftphandle))
        return 0;
    return 1;
}

int ftplib::SetDataEncryption(dataencryption enc)
{
#ifdef NOSSL
    (void)enc;
    return 0;
#else
    if (!mp_ftphandle->tlsctrl) return 0;
    if (!FtpSendCmd("PBSZ 0",'2',mp_ftphandle)) return 0;
    switch(enc)
    {
    case ftplib::unencrypted:
        mp_ftphandle->tlsdata = 0;
        if (!FtpSendCmd("PROT C",'2',mp_ftphandle)) return 0;
        break;
    case ftplib::secure:
        mp_ftphandle->tlsdata = 1;
        if (!FtpSendCmd("PROT P",'2',mp_ftphandle)) return 0;
        break;
    default:
        return 0;
    }
    return 1;
#endif
}

int ftplib::NegotiateEncryption()
{
#ifdef NOSSL
    return 0;
#else
    int ret;

    if (!FtpSendCmd("AUTH TLS",'2',mp_ftphandle)) return 0;

    mp_ftphandle->sbio = BIO_new_socket(mp_ftphandle->handle, BIO_NOCLOSE);
    SSL_set_bio(mp_ftphandle->ssl,mp_ftphandle->sbio,mp_ftphandle->sbio);

    ret = SSL_connect(mp_ftphandle->ssl);
    if (ret == 1) mp_ftphandle->tlsctrl = 1;

    if (mp_ftphandle->certcb != NULL)
    {
        X509 *cert = SSL_get_peer_certificate(mp_ftphandle->ssl);
        if (!mp_ftphandle->certcb(mp_ftphandle->cbarg, cert)) return 0;
    }

    if (ret < 1) return 0;

    return 1;
#endif
}

void ftplib::SetCallbackCertFunction(FtpCallbackCert pointer)
{
#ifdef NOSSL
    (void)pointer;
#else
    mp_ftphandle->certcb = pointer;
#endif
}

void ftplib::SetCallbackIdleFunction(FtpCallbackIdle pointer)
{
    mp_ftphandle->idlecb = pointer;
}

void ftplib::SetCallbackXferFunction(FtpCallbackXfer pointer)
{
    mp_ftphandle->xfercb = pointer;
}

void ftplib::SetCallbackLogFunction(FtpCallbackLog pointer)
{
    mp_ftphandle->logcb = pointer;
}

void ftplib::SetCallbackArg(void *arg)
{
    mp_ftphandle->cbarg = arg;
}

void ftplib::SetCallbackBytes(off64_t bytes)
{
    mp_ftphandle->cbbytes = bytes;
}

void ftplib::SetCallbackIdletime(int time)
{
    mp_ftphandle->idletime.tv_sec = time / 1000;
    mp_ftphandle->idletime.tv_usec = (time % 1000) * 1000;
}

void ftplib::SetConnmode(connmode mode)
{
    mp_ftphandle->cmode = mode;
}

void ftplib::ClearHandle()
{
    mp_ftphandle->dir = FTPLIB_CONTROL;
    mp_ftphandle->ctrl = NULL;
    mp_ftphandle->cmode = ftplib::pasv;
    mp_ftphandle->idlecb = NULL;
    mp_ftphandle->idletime.tv_sec = mp_ftphandle->idletime.tv_usec = 0;
    mp_ftphandle->cbarg = NULL;
    mp_ftphandle->xfered = 0;
    mp_ftphandle->xfered1 = 0;
    mp_ftphandle->cbbytes = 0;
#ifndef NOSSL
    mp_ftphandle->tlsctrl = 0;
    mp_ftphandle->tlsdata = 0;
    mp_ftphandle->certcb = NULL;
#endif
    mp_ftphandle->offset = 0;
    mp_ftphandle->handle = 0;
    mp_ftphandle->logcb = NULL;
    mp_ftphandle->xfercb = NULL;
    mp_ftphandle->correctpasv = false;
}

int ftplib::CorrectPasvResponse(unsigned char *v)
{
    struct sockaddr ipholder;
    socklen_t ipholder_size = sizeof(ipholder);

    if (getpeername(mp_ftphandle->handle, &ipholder, &ipholder_size) == -1)
    {
        perror("getpeername");
        net_close(mp_ftphandle->handle);
        return 0;
    }

    for (int i = 2; i < 6; i++) v[i] = ipholder.sa_data[i];

    return 1;
}

ftphandle* ftplib::RawOpen(const char *path, accesstype type, transfermode mode)
{
    int ret;
    ftphandle* datahandle;
    ret = FtpAccess(path, type, mode, mp_ftphandle, &datahandle);
    if (ret) return datahandle;
    else return NULL;
}

int ftplib::RawClose(ftphandle* handle)
{
    return FtpClose(handle);
}

int ftplib::RawWrite(void* buf, int len, ftphandle* handle)
{
    return FtpWrite(buf, len, handle);
}

int ftplib::RawRead(void* buf, int max, ftphandle* handle)
{
    return FtpRead(buf, max, handle);
}
