mirror of
https://github.com/Llewellynvdm/conky.git
synced 2024-11-18 19:15:12 +00:00
e5893c4329
git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky@130 7f574dfc-610e-0410-a909-a81674777703
937 lines
16 KiB
C
937 lines
16 KiB
C
/*
|
|
* ftp.c: basic handling of an FTP command connection to check for
|
|
* directory availability. No transfer is needed.
|
|
*
|
|
* Reference: RFC 959
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
#include <resolv.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <netdb.h>
|
|
#include <string.h>
|
|
|
|
#include "ftp.h"
|
|
|
|
/* #define DEBUG_FTP 1 */
|
|
#ifdef STANDALONE
|
|
#define DEBUG_FTP 1
|
|
#endif
|
|
|
|
static int ftpFd = -1;
|
|
static struct sockaddr_in ftpAddr;
|
|
static char hostname[100];
|
|
static int ftpPassive = 1;
|
|
static int dataFd = -1;
|
|
|
|
#define FTP_COMMAND_OK 200
|
|
#define FTP_SYNTAX_ERROR 500
|
|
#define FTP_GET_PASSWD 331
|
|
|
|
/*
|
|
* Initialize the FTP handling.
|
|
*/
|
|
|
|
void initFtp(void)
|
|
{
|
|
gethostname(hostname, sizeof(hostname));
|
|
}
|
|
|
|
/*
|
|
* Parsing of the server answer, we just extract the code.
|
|
* return 0 for errors
|
|
* +XXX for last line of response
|
|
* -XXX for response to be continued
|
|
*/
|
|
int parseFtpResponse(char *buf, int len)
|
|
{
|
|
int val = 0;
|
|
|
|
if (len < 3)
|
|
return (-1);
|
|
if ((*buf >= '0') && (*buf <= '9'))
|
|
val = val * 10 + (*buf - '0');
|
|
else
|
|
return (0);
|
|
buf++;
|
|
if ((*buf >= '0') && (*buf <= '9'))
|
|
val = val * 10 + (*buf - '0');
|
|
else
|
|
return (0);
|
|
buf++;
|
|
if ((*buf >= '0') && (*buf <= '9'))
|
|
val = val * 10 + (*buf - '0');
|
|
else
|
|
return (0);
|
|
buf++;
|
|
if (*buf == '-')
|
|
return (-val);
|
|
return (val);
|
|
}
|
|
|
|
/*
|
|
* Read the response from the FTP server after a command.
|
|
* Returns the code number
|
|
*
|
|
*/
|
|
int readFtpResponse(char *buf, int size)
|
|
{
|
|
char *ptr, *end;
|
|
int len;
|
|
int res = -1;
|
|
|
|
if (size <= 0)
|
|
return (-1);
|
|
|
|
get_more:
|
|
if ((len = recv(ftpFd, buf, size - 1, 0)) < 0) {
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
if (len == 0) {
|
|
return (-1);
|
|
}
|
|
|
|
end = &buf[len];
|
|
*end = 0;
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
ptr = buf;
|
|
while (ptr < end) {
|
|
res = parseFtpResponse(ptr, end - ptr);
|
|
if (res > 0)
|
|
break;
|
|
if (res == 0) {
|
|
#ifdef DEBUG_FTP
|
|
fprintf(stderr, "readFtpResponse failed: %s\n",
|
|
ptr);
|
|
#endif
|
|
return (-1);
|
|
}
|
|
while ((ptr < end) && (*ptr != '\n'))
|
|
ptr++;
|
|
if (ptr >= end) {
|
|
#ifdef DEBUG_FTP
|
|
fprintf(stderr,
|
|
"readFtpResponse: unexpected end %s\n",
|
|
buf);
|
|
#endif
|
|
return ((-res) / 100);
|
|
}
|
|
if (*ptr != '\r')
|
|
ptr++;
|
|
}
|
|
|
|
if (res < 0)
|
|
goto get_more;
|
|
|
|
#ifdef DEBUG_FTP
|
|
printf("Got %d\n", res);
|
|
#endif
|
|
return (res / 100);
|
|
}
|
|
|
|
/*
|
|
* Get the response from the FTP server after a command.
|
|
* Returns the code number
|
|
*
|
|
*/
|
|
int getFtpResponse(void)
|
|
{
|
|
char buf[16 * 1024 + 1];
|
|
|
|
/**************
|
|
fd_set rfd;
|
|
struct timeval tv;
|
|
int res;
|
|
|
|
tv.tv_sec = 10;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(ftpFd, &rfd);
|
|
res = select(ftpFd + 1, &rfd, NULL, NULL, &tv);
|
|
if (res <= 0) return(res);
|
|
**************/
|
|
|
|
return (readFtpResponse(buf, 16 * 1024));
|
|
}
|
|
|
|
/*
|
|
* Check if there is a response from the FTP server after a command.
|
|
* Returns the code number, or 0
|
|
*/
|
|
int checkFtpResponse(void)
|
|
{
|
|
char buf[1024 + 1];
|
|
fd_set rfd;
|
|
struct timeval tv;
|
|
|
|
tv.tv_sec = 0;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(ftpFd, &rfd);
|
|
switch (select(ftpFd + 1, &rfd, NULL, NULL, &tv)) {
|
|
case 0:
|
|
return (0);
|
|
case -1:
|
|
#ifdef DEBUG_FTP
|
|
perror("select");
|
|
#endif
|
|
return (-1);
|
|
|
|
}
|
|
|
|
return (readFtpResponse(buf, 1024));
|
|
}
|
|
|
|
/*
|
|
* Send the user authentification
|
|
*/
|
|
|
|
int sendUser(void)
|
|
{
|
|
char buf[200];
|
|
int len;
|
|
int res;
|
|
|
|
len = snprintf(buf, sizeof(buf), "USER anonymous\r\n");
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0)
|
|
return (res);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Send the password authentification
|
|
*/
|
|
|
|
int sendPasswd(void)
|
|
{
|
|
char buf[200];
|
|
int len;
|
|
int res;
|
|
|
|
len =
|
|
snprintf(buf, sizeof(buf), "PASS mirrorfind@%s\r\n", hostname);
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0)
|
|
return (res);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Send a QUIT
|
|
*/
|
|
|
|
int sendQuit(void)
|
|
{
|
|
char buf[200];
|
|
int len;
|
|
int res;
|
|
|
|
len = snprintf(buf, sizeof(buf), "QUIT\r\n");
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Connecting to the server, port 21 by default.
|
|
*/
|
|
|
|
int connectFtp(const char *server, int port)
|
|
{
|
|
struct hostent *hp;
|
|
int res;
|
|
|
|
/*
|
|
* do the blocking DNS query.
|
|
*/
|
|
hp = gethostbyname(server);
|
|
if (hp == NULL)
|
|
return (-1);
|
|
|
|
/*
|
|
* Prepare the socket
|
|
*/
|
|
memset(&ftpAddr, 0, sizeof(ftpAddr));
|
|
ftpAddr.sin_family = AF_INET;
|
|
memcpy(&ftpAddr.sin_addr, hp->h_addr_list[0], hp->h_length);
|
|
if (port == 0)
|
|
port = 21;
|
|
ftpAddr.sin_port = htons(port);
|
|
ftpFd = socket(AF_INET, SOCK_STREAM, 0);
|
|
if (ftpFd < 0)
|
|
return (-1);
|
|
|
|
/*
|
|
* Do the connect.
|
|
*/
|
|
if (connect(ftpFd, (struct sockaddr *) &ftpAddr,
|
|
sizeof(struct sockaddr_in)) < 0) {
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Wait for the HELLO from the server.
|
|
*/
|
|
res = getFtpResponse();
|
|
if (res != 2) {
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* State diagram for the login operation on the FTP server
|
|
*
|
|
* Reference: RFC 959
|
|
*
|
|
* 1
|
|
* +---+ USER +---+------------->+---+
|
|
* | B |---------->| W | 2 ---->| E |
|
|
* +---+ +---+------ | -->+---+
|
|
* | | | | |
|
|
* 3 | | 4,5 | | |
|
|
* -------------- ----- | | |
|
|
* | | | | |
|
|
* | | | | |
|
|
* | --------- |
|
|
* | 1| | | |
|
|
* V | | | |
|
|
* +---+ PASS +---+ 2 | ------>+---+
|
|
* | |---------->| W |------------->| S |
|
|
* +---+ +---+ ---------->+---+
|
|
* | | | | |
|
|
* 3 | |4,5| | |
|
|
* -------------- -------- |
|
|
* | | | | |
|
|
* | | | | |
|
|
* | -----------
|
|
* | 1,3| | | |
|
|
* V | 2| | |
|
|
* +---+ ACCT +---+-- | ----->+---+
|
|
* | |---------->| W | 4,5 -------->| F |
|
|
* +---+ +---+------------->+---+
|
|
*/
|
|
res = sendUser();
|
|
if (res < 0) {
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
res = getFtpResponse();
|
|
switch (res) {
|
|
case 2:
|
|
return (0);
|
|
case 3:
|
|
break;
|
|
case 1:
|
|
case 4:
|
|
case 5:
|
|
case -1:
|
|
default:
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
res = sendPasswd();
|
|
if (res < 0) {
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
res = getFtpResponse();
|
|
switch (res) {
|
|
case 2:
|
|
return (0);
|
|
case 3:
|
|
fprintf(stderr,
|
|
"FTP server asking for ACCNT on anonymous\n");
|
|
case 1:
|
|
case 4:
|
|
case 5:
|
|
case -1:
|
|
default:
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check an FTP directory on the server
|
|
*/
|
|
|
|
int changeFtpDirectory(char *directory)
|
|
{
|
|
char buf[400];
|
|
int len;
|
|
int res;
|
|
|
|
/*
|
|
* Expected response code for CWD:
|
|
*
|
|
* CWD
|
|
* 250
|
|
* 500, 501, 502, 421, 530, 550
|
|
*/
|
|
len = snprintf(buf, sizeof(buf), "CWD %s\r\n", directory);
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0)
|
|
return (res);
|
|
res = getFtpResponse();
|
|
if (res == 4) {
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
if (res == 2)
|
|
return (1);
|
|
if (res == 5) {
|
|
return (0);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* dataConnectFtp
|
|
*/
|
|
int dataConnectFtp()
|
|
{
|
|
char buf[200];
|
|
int len, i;
|
|
int res;
|
|
unsigned char ad[6], *cur, *adp, *portp;
|
|
unsigned int temp[6];
|
|
struct sockaddr_in dataAddr;
|
|
socklen_t dataAddrLen;
|
|
|
|
dataFd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
|
if (dataFd < 0) {
|
|
fprintf(stderr,
|
|
"dataConnectFtp: failed to create socket\n");
|
|
}
|
|
dataAddrLen = sizeof(dataAddr);
|
|
memset(&dataAddr, 0, dataAddrLen);
|
|
dataAddr.sin_family = AF_INET;
|
|
|
|
if (ftpPassive) {
|
|
len = snprintf(buf, sizeof(buf), "PASV\r\n");
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (res);
|
|
}
|
|
res = readFtpResponse(buf, sizeof(buf) - 1);
|
|
if (res != 2) {
|
|
if (res == 5) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
} else {
|
|
/*
|
|
* retry with an active connection
|
|
*/
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
ftpPassive = 0;
|
|
}
|
|
}
|
|
cur = &buf[4];
|
|
while (((*cur < '0') || (*cur > '9')) && *cur != '\0')
|
|
cur++;
|
|
if (sscanf
|
|
(cur, "%d,%d,%d,%d,%d,%d", &temp[0], &temp[1],
|
|
&temp[2], &temp[3], &temp[4], &temp[5]) != 6) {
|
|
fprintf(stderr, "Invalid answer to PASV\n");
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
for (i = 0; i < 6; i++)
|
|
ad[i] = (unsigned char) (temp[i] & 0xff);
|
|
memcpy(&dataAddr.sin_addr, &ad[0], 4);
|
|
memcpy(&dataAddr.sin_port, &ad[4], 2);
|
|
if (connect
|
|
(dataFd, (struct sockaddr *) &dataAddr,
|
|
dataAddrLen) < 0) {
|
|
fprintf(stderr,
|
|
"Failed to create a data connection\n");
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
} else {
|
|
getsockname(dataFd, (struct sockaddr *) &dataAddr,
|
|
&dataAddrLen);
|
|
dataAddr.sin_port = 0;
|
|
if (bind
|
|
(dataFd, (struct sockaddr *) &dataAddr,
|
|
dataAddrLen) < 0) {
|
|
fprintf(stderr, "Failed to bind a port\n");
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
getsockname(dataFd, (struct sockaddr *) &dataAddr,
|
|
&dataAddrLen);
|
|
|
|
if (listen(dataFd, 1) < 0) {
|
|
fprintf(stderr, "Could not listen on port %d\n",
|
|
ntohs(dataAddr.sin_port));
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
adp = (unsigned char *) &dataAddr.sin_addr;
|
|
portp = (unsigned char *) &dataAddr.sin_port;
|
|
len =
|
|
snprintf(buf, sizeof(buf),
|
|
"PORT %d,%d,%d,%d,%d,%d\r\n", adp[0] & 0xff,
|
|
adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff,
|
|
portp[0] & 0xff, portp[1] & 0xff);
|
|
buf[sizeof(buf) - 1] = 0;
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (res);
|
|
}
|
|
res = getFtpResponse();
|
|
if (res != 2) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
}
|
|
return (dataFd);
|
|
|
|
}
|
|
|
|
/*
|
|
* dataConnectEndFtp
|
|
*/
|
|
int dataConnectEndFtp()
|
|
{
|
|
int res;
|
|
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
res = getFtpResponse();
|
|
if (res != 2) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* parseListFtp
|
|
*/
|
|
|
|
int parseListFtp(const char *list, ftpListCallback callback,
|
|
void *userData)
|
|
{
|
|
const char *cur = list;
|
|
char filename[151];
|
|
char attrib[11];
|
|
char owner[11];
|
|
char group[11];
|
|
char month[4];
|
|
int year = 0;
|
|
int minute = 0;
|
|
int hour = 0;
|
|
int day = 0;
|
|
unsigned long size = 0;
|
|
int links = 0;
|
|
int i;
|
|
|
|
if (!strncmp(cur, "total", 5)) {
|
|
cur += 5;
|
|
while (*cur == ' ')
|
|
cur++;
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
links = (links * 10) + (*cur++ - '0');
|
|
while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r'))
|
|
cur++;
|
|
return (cur - list);
|
|
} else if (*list == '+') {
|
|
return (0);
|
|
} else {
|
|
while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r'))
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 10)
|
|
attrib[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
}
|
|
attrib[10] = 0;
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
links = (links * 10) + (*cur++ - '0');
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 10)
|
|
owner[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
}
|
|
owner[i] = 0;
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 10)
|
|
group[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
}
|
|
group[i] = 0;
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
size = (size * 10) + (*cur++ - '0');
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
i = 0;
|
|
while (*cur != ' ') {
|
|
if (i < 3)
|
|
month[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
}
|
|
month[i] = 0;
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
day = (day * 10) + (*cur++ - '0');
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
if ((cur[1] == 0) || (cur[2] == 0))
|
|
return (0);
|
|
if ((cur[1] == ':') || (cur[2] == ':')) {
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
hour = (hour * 10) + (*cur++ - '0');
|
|
if (*cur == ':')
|
|
cur++;
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
minute = (minute * 10) + (*cur++ - '0');
|
|
} else {
|
|
while ((*cur >= '0') && (*cur <= '9'))
|
|
year = (year * 10) + (*cur++ - '0');
|
|
}
|
|
while (*cur == ' ')
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
i = 0;
|
|
while ((*cur != '\n') && (*cur != '\r')) {
|
|
if (i < 150)
|
|
filename[i++] = *cur;
|
|
cur++;
|
|
if (*cur == 0)
|
|
return (0);
|
|
}
|
|
filename[i] = 0;
|
|
if ((*cur != '\n') && (*cur != '\r'))
|
|
return (0);
|
|
while ((*cur == '\n') || (*cur == '\r'))
|
|
cur++;
|
|
}
|
|
if (callback != NULL) {
|
|
callback(userData, filename, attrib, owner, group, size,
|
|
links, year, month, day, minute);
|
|
}
|
|
return (cur - list);
|
|
}
|
|
|
|
/*
|
|
* listFtp
|
|
*/
|
|
int listFtp(ftpListCallback callback, void *userData)
|
|
{
|
|
char buf[4096 + 1];
|
|
int len, res;
|
|
int index = 0, base;
|
|
fd_set rfd, efd;
|
|
struct timeval tv;
|
|
|
|
dataFd = dataConnectFtp();
|
|
|
|
len = snprintf(buf, sizeof(buf), "LIST -L\r\n");
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (res);
|
|
}
|
|
res = readFtpResponse(buf, sizeof(buf) - 1);
|
|
if (res != 1) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-res);
|
|
}
|
|
|
|
do {
|
|
tv.tv_sec = 1;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(dataFd, &rfd);
|
|
FD_ZERO(&efd);
|
|
FD_SET(dataFd, &efd);
|
|
res = select(dataFd + 1, &rfd, NULL, &efd, &tv);
|
|
if (res < 0) {
|
|
#ifdef DEBUG_FTP
|
|
perror("select");
|
|
#endif
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
if (res == 0) {
|
|
res = checkFtpResponse();
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
if (res == 2) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (0);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if ((len =
|
|
read(dataFd, &buf[index],
|
|
sizeof(buf) - (index + 1))) < 0) {
|
|
#ifdef DEBUG_FTP
|
|
perror("read");
|
|
#endif
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
#ifdef DEBUG_FTP
|
|
write(1, &buf[index], len);
|
|
#endif
|
|
index += len;
|
|
buf[index] = 0;
|
|
base = 0;
|
|
do {
|
|
res = parseListFtp(&buf[base], callback, userData);
|
|
base += res;
|
|
} while (res > 0);
|
|
|
|
memmove(&buf[0], &buf[base], index - base);
|
|
index -= base;
|
|
} while (len != 0);
|
|
dataConnectEndFtp();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* getFtpSocket:
|
|
*/
|
|
|
|
int getFtpSocket(const char *filename)
|
|
{
|
|
char buf[300];
|
|
int res, len;
|
|
if (filename == NULL)
|
|
return (-1);
|
|
dataFd = dataConnectFtp();
|
|
|
|
len = snprintf(buf, sizeof(buf), "TYPE I\r\n");
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (res);
|
|
}
|
|
res = readFtpResponse(buf, sizeof(buf) - 1);
|
|
if (res != 2) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-res);
|
|
}
|
|
len = snprintf(buf, sizeof(buf), "RETR %s\r\n", filename);
|
|
#ifdef DEBUG_FTP
|
|
printf(buf);
|
|
#endif
|
|
res = send(ftpFd, buf, len, 0);
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (res);
|
|
}
|
|
res = readFtpResponse(buf, sizeof(buf) - 1);
|
|
if (res != 1) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-res);
|
|
}
|
|
return (dataFd);
|
|
}
|
|
|
|
/*
|
|
* closeFtpSocket
|
|
*/
|
|
|
|
int closeFtpSocket()
|
|
{
|
|
return (dataConnectEndFtp());
|
|
}
|
|
|
|
/*
|
|
* listFtp
|
|
*/
|
|
int getFtp(ftpDataCallback callback, void *userData, const char *filename)
|
|
{
|
|
char buf[4096];
|
|
int len = 0, res;
|
|
fd_set rfd;
|
|
struct timeval tv;
|
|
|
|
if (filename == NULL)
|
|
return (-1);
|
|
if (callback == NULL)
|
|
return (-1);
|
|
if (getFtpSocket(filename) < 0)
|
|
return (-1);
|
|
|
|
do {
|
|
tv.tv_sec = 1;
|
|
tv.tv_usec = 0;
|
|
FD_ZERO(&rfd);
|
|
FD_SET(dataFd, &rfd);
|
|
res = select(dataFd + 1, &rfd, NULL, NULL, &tv);
|
|
if (res < 0) {
|
|
#ifdef DEBUG_FTP
|
|
perror("select");
|
|
#endif
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
if (res == 0) {
|
|
res = checkFtpResponse();
|
|
if (res < 0) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
dataFd = -1;
|
|
return (-1);
|
|
}
|
|
if (res == 2) {
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
return (0);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
if ((len = read(dataFd, &buf, sizeof(buf))) < 0) {
|
|
callback(userData, buf, len);
|
|
close(dataFd);
|
|
dataFd = -1;
|
|
ftpFd = -1;
|
|
return (-1);
|
|
}
|
|
callback(userData, buf, len);
|
|
} while (len != 0);
|
|
|
|
return (closeFtpSocket());
|
|
}
|
|
|
|
/*
|
|
* Disconnect from the FTP server.
|
|
*/
|
|
|
|
int disconnectFtp(void)
|
|
{
|
|
if (ftpFd < 0)
|
|
return (-1);
|
|
sendQuit();
|
|
close(ftpFd);
|
|
ftpFd = -1;
|
|
ftpFd = -1;
|
|
return (0);
|
|
}
|