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ftplib.cpp
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ftplib.cpp
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// 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;
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 -aL");
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);