/* $USAGI$ */
/*
* Copyright (C) 1997 and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright (c) 1985, 1989 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* From: @(#)ftp.c 5.38 (Berkeley) 4/22/91
*/
char ftp_rcsid[] =
"$Id: ftp.c,v 1.11 2001/02/11 12:26:59 yoshfuji Exp $";
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/file.h>
#include <sys/poll.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <arpa/ftp.h>
#include <arpa/telnet.h>
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <netdb.h>
#include <pwd.h>
#include <stdarg.h>
#include "ftp_var.h"
#include "cmds.h"
#ifdef _USAGI
#include "version.h"
#else
#include "../version.h"
#endif
union sockunion {
struct sockinet {
u_short si_family;
u_short si_port;
} su_si;
struct sockaddr su_sa;
struct sockaddr_in su_sin;
#ifdef INET6
struct sockaddr_in6 su_sin6;
#endif
};
#define su_family su_sa.sa_family
#define su_port su_si.si_port
#ifdef INET6
#define ex_af2prot(a) (a == AF_INET ? 1 : (a == AF_INET6 ? 2 : 0))
#else
#define ex_af2prot(a) (a == AF_INET ? 1 : 0)
#endif
int data = -1;
off_t restart_point = 0;
static union sockunion hisctladdr;
static union sockunion data_addr;
static union sockunion myctladdr;
static int ptflag = 0;
static sigjmp_buf recvabort;
static sigjmp_buf sendabort;
static sigjmp_buf ptabort;
static int ptabflg = 0;
static int abrtflag = 0;
struct sockaddr_storage source;
void lostpeer(int);
extern int connected;
static char *gunique(char *);
static void proxtrans(const char *cmd, char *local, char *remote);
static int initconn(void);
static void ptransfer(const char *direction, long long bytes,
const struct timeval *t0,
const struct timeval *t1);
static void tvsub(struct timeval *tdiff,
const struct timeval *t1,
const struct timeval *t0);
static void abort_remote(FILE *din);
FILE *cin, *cout;
static FILE *dataconn(const char *);
char *
hookup(const char *host, const char *port)
{
int s, tos, error;
socklen_t len, alen;
static char hostnamebuf[256];
struct addrinfo hints, *res, *res0;
char hbuf[MAXHOSTNAMELEN], pbuf[NI_MAXSERV];
char *cause = "ftp: unknown";
if (port) {
strncpy(pbuf, port, sizeof(pbuf) - 1);
pbuf[sizeof(pbuf) - 1] = '\0';
} else {
sprintf(pbuf, "%d", ntohs(ftp_port));
}
memset(&hisctladdr, 0, sizeof(hisctladdr));
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME;
hints.ai_socktype = SOCK_STREAM;
error = getaddrinfo(host, pbuf, &hints, &res0);
if (error) {
if (port) {
strcpy(hbuf, " ");
} else {
hbuf[0] = '\0';
pbuf[0] = '\0';
}
fprintf(stderr, "ftp: %s%s%s: %s\n", host, hbuf, pbuf,
gai_strerror(error));
code = -1;
return (0);
}
if (res0->ai_canonname) {
struct addrinfo h, *a;
memset(&h, 0, sizeof(h));
h.ai_family = PF_UNSPEC;
h.ai_socktype = SOCK_STREAM;
h.ai_flags = AI_NUMERICHOST;
if (!getaddrinfo(res0->ai_canonname, NULL, &h, &a)) {
strncpy(hostnamebuf, res0->ai_canonname, sizeof(hostnamebuf));
freeaddrinfo(a);
} else
strncpy(hostnamebuf, host, sizeof(hostnamebuf));
}
else
strncpy(hostnamebuf, host, sizeof(hostnamebuf));
hostnamebuf[sizeof(hostnamebuf) - 1] = '\0';
hostname = hostnamebuf;
s = -1;
for (res = res0; res; res = res->ai_next) {
if (!ex_af2prot(res->ai_family)) {
cause = "ftp: mismatch address family";
errno = EPROTONOSUPPORT;
continue;
}
if ((size_t)res->ai_addrlen > sizeof(hisctladdr)) {
cause = "ftp: mismatch struct sockaddr size";
errno = EPROTO;
continue;
}
if (getnameinfo(res->ai_addr, res->ai_addrlen,
hbuf, sizeof(hbuf), NULL, 0,
NI_NUMERICHOST))
strcpy(hbuf, "???");
if (res0->ai_next) /* if we have multiple possibilities */
fprintf(stdout, "Trying %s...\n", hbuf);
s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (s < 0) {
cause = "ftp: socket";
continue;
}
while ((error = connect(s, res->ai_addr, res->ai_addrlen)) < 0
&& errno == EINTR) {
;
}
if (error) {
/* this "if" clause is to prevent print warning twice */
if (res->ai_next) {
fprintf(stderr,
"ftp: connect to address %s", hbuf);
perror("");
}
cause = "ftp: connect";
close(s);
s = -1;
continue;
}
/* finally we got one */
break;
}
if (s < 0) {
perror(cause);
code = -1;
freeaddrinfo(res0);
return NULL;
}
len = res->ai_addrlen;
memcpy(&hisctladdr, res->ai_addr, len);
freeaddrinfo(res0);
if (getsockname(s, (struct sockaddr *)&myctladdr, &len) < 0) {
perror("ftp: getsockname");
code = -1;
goto bad;
}
#ifdef IP_TOS
if (hisctladdr.su_family == AF_INET)
{
tos = IPTOS_LOWDELAY;
if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
perror("ftp: setsockopt TOS (ignored)");
}
#endif
cin = fdopen(s, "r");
cout = fdopen(s, "w");
if (cin == NULL || cout == NULL) {
fprintf(stderr, "ftp: fdopen failed.\n");
if (cin)
(void) fclose(cin);
if (cout)
(void) fclose(cout);
code = -1;
goto bad;
}
if (verbose)
printf("Connected to %s (%s).\n", hostname, hbuf);
alen = sizeof(source);
getsockname(s,(struct sockaddr*)&source, &alen);
switch (source.ss_family) {
/* We just want the addr, not the port */
case AF_INET:
((struct sockaddr_in *) &source)->sin_port = 0;
break;
case AF_INET6:
((struct sockaddr_in6 *) &source)->sin6_port = 0;
break;
}
if (getreply(0) > 2) { /* read startup message from server */
if (cin)
(void) fclose(cin);
if (cout)
(void) fclose(cout);
code = -1;
goto bad;
}
#ifdef SO_OOBINLINE
{
int on = 1;
if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on))
< 0 && debug) {
perror("ftp: setsockopt");
}
}
#endif /* SO_OOBINLINE */
return (hostname);
bad:
(void) close(s);
return ((char *)0);
}
int
dologin(const char *host)
{
char tmp[80];
char *luser, *pass, *zacct;
int n, aflag = 0;
luser = pass = zacct = 0;
if (xruserpass(host, &luser, &pass, &zacct) < 0) {
code = -1;
return(0);
}
while (luser == NULL) {
char *myname = NULL;
struct passwd *pp = getpwuid(getuid());
if (pp != NULL)
myname = pp->pw_name;
if (myname)
printf("Name (%s:%s): ", host, myname);
else
printf("Name (%s): ", host);
if (fgets(tmp, sizeof(tmp) - 1, stdin)==NULL) {
fprintf(stderr, "\nLogin failed.\n");
return 0;
}
tmp[strlen(tmp) - 1] = '\0';
if (*tmp == '\0')
luser = myname;
else
luser = tmp;
}
n = command("USER %s", luser);
if (n == CONTINUE) {
if (pass == NULL) {
/* fflush(stdout); */
pass = getpass("Password:");
}
n = command("PASS %s", pass);
}
if (n == CONTINUE) {
aflag++;
/* fflush(stdout); */
if(zacct==NULL)
zacct = getpass("Account:");
n = command("ACCT %s", zacct);
}
if (n != COMPLETE) {
fprintf(stderr, "Login failed.\n");
return (0);
}
if (!aflag && zacct != NULL)
(void) command("ACCT %s", zacct);
if (proxy)
return(1);
for (n = 0; n < macnum; ++n) {
if (!strcmp("init", macros[n].mac_name)) {
int margc;
char **margv;
strcpy(line, "$init");
margv = makeargv(&margc, NULL);
domacro(margc, margv);
break;
}
}
return (1);
}
static void
cmdabort(int ignore)
{
(void)ignore;
printf("\n");
fflush(stdout);
abrtflag++;
if (ptflag) siglongjmp(ptabort,1);
}
int
command(const char *fmt, ...)
{
va_list ap;
int r;
void (*oldintr)(int);
abrtflag = 0;
if (debug) {
printf("---> ");
va_start(ap, fmt);
if (strncmp("PASS ", fmt, 5) == 0)
printf("PASS XXXX");
else
vfprintf(stdout, fmt, ap);
va_end(ap);
printf("\n");
(void) fflush(stdout);
}
if (cout == NULL) {
perror ("No control connection for command");
code = -1;
return (0);
}
oldintr = signal(SIGINT, cmdabort);
va_start(ap, fmt);
vfprintf(cout, fmt, ap);
va_end(ap);
fprintf(cout, "\r\n");
(void) fflush(cout);
cpend = 1;
r = getreply(!strcmp(fmt, "QUIT"));
if (abrtflag && oldintr != SIG_IGN)
(*oldintr)(SIGINT);
(void) signal(SIGINT, oldintr);
return(r);
}
char reply_string[BUFSIZ]; /* last line of previous reply */
#include <ctype.h>
int
getreply(int expecteof)
{
register int c, n;
register int dig;
register char *cp;
int originalcode = 0, continuation = 0;
void (*oldintr)(int);
int pflag = 0;
size_t px = 0;
size_t psize = sizeof(pasv);
oldintr = signal(SIGINT, cmdabort);
for (;;) {
dig = n = code = 0;
cp = reply_string;
while ((c = getc(cin)) != '\n') {
if (c == IAC) { /* handle telnet commands */
switch (c = getc(cin)) {
case WILL:
case WONT:
c = getc(cin);
fprintf(cout, "%c%c%c", IAC, DONT, c);
(void) fflush(cout);
break;
case DO:
case DONT:
c = getc(cin);
fprintf(cout, "%c%c%c", IAC, WONT, c);
(void) fflush(cout);
break;
default:
break;
}
continue;
}
dig++;
if (c == EOF) {
if (expecteof) {
(void) signal(SIGINT,oldintr);
code = 221;
return (0);
}
lostpeer(0);
if (cout) {
fclose(cout);
cout = NULL;
}
if (verbose) {
printf("421 Service not available, remote server has closed connection\n");
(void) fflush(stdout);
}
code = 421;
return(4);
}
if (c != '\r' && (verbose > 0 ||
(verbose > -1 && n == '5' && dig > 4))) {
if (proxflag &&
(dig == 1 || (dig == 5 && verbose == 0)))
printf("%s:",hostname);
(void) putchar(c);
}
if (dig < 4 && isdigit(c))
code = code * 10 + (c - '0');
if (!pflag && (code == 227 || code == 228))
pflag = 1;
else if (!pflag && code == 229)
pflag = 100;
if (dig > 4 && pflag == 1 && isdigit(c))
pflag = 2;
if (pflag == 2) {
if (c != '\r' && c != ')') {
if (px < psize-1) pasv[px++] = c;
}
else {
pasv[px] = '\0';
pflag = 3;
}
}
if (pflag == 100 && c == '(')
pflag = 2;
if (dig == 4 && c == '-') {
if (continuation)
code = 0;
continuation++;
}
if (n == 0)
n = c;
if (cp < &reply_string[sizeof(reply_string) - 1])
*cp++ = c;
}
if (verbose > 0 || (verbose > -1 && n == '5')) {
(void) putchar(c);
(void) fflush (stdout);
}
if (continuation && code != originalcode) {
if (originalcode == 0)
originalcode = code;
continue;
}
*cp = '\0';
if (n != '1')
cpend = 0;
(void) signal(SIGINT,oldintr);
if (code == 421 || originalcode == 421)
{
lostpeer(0);
if(cout)
{
fclose(cout);
cout = NULL;
}
}
if (abrtflag && oldintr != cmdabort && oldintr != SIG_IGN)
(*oldintr)(SIGINT);
return (n - '0');
}
}
static int
empty(fd_set *mask, int hifd, int sec)
{
struct timeval t;
t.tv_sec = (long) sec;
t.tv_usec = 0;
return(select(hifd+1, mask, (fd_set *) 0, (fd_set *) 0, &t));
}
static void
abortsend(int ignore)
{
(void)ignore;
mflag = 0;
abrtflag = 0;
printf("\nsend aborted\nwaiting for remote to finish abort\n");
(void) fflush(stdout);
siglongjmp(sendabort, 1);
}
#define HASHBYTES 1024
void
sendrequest(const char *cmd, char *local, char *remote, int printnames)
{
struct stat st;
struct timeval start, stop;
register int c, d;
FILE *volatile fin, *volatile dout = 0;
int (*volatile closefunc)(FILE *);
void (*volatile oldintr)(int);
void (*volatile oldintp)(int);
volatile long long bytes = 0, hashbytes = HASHBYTES;
char buf[BUFSIZ], *bufp;
const char *volatile lmode;
int old_code_l;
if (verbose && printnames) {
if (local && *local != '-')
printf("local: %s ", local);
if (remote)
printf("remote: %s\n", remote);
}
if (proxy) {
proxtrans(cmd, local, remote);
return;
}
if (curtype != type)
changetype(type, 0);
closefunc = NULL;
oldintr = NULL;
oldintp = NULL;
lmode = "w";
if (sigsetjmp(sendabort, 1)) {
while (cpend) {
(void) getreply(0);
}
if (data >= 0) {
(void) close(data);
data = -1;
}
if (oldintr)
(void) signal(SIGINT,oldintr);
if (oldintp)
(void) signal(SIGPIPE,oldintp);
code = -1;
return;
}
oldintr = signal(SIGINT, abortsend);
if (strcmp(local, "-") == 0)
fin = stdin;
else if (*local == '|') {
oldintp = signal(SIGPIPE,SIG_IGN);
fin = popen(local + 1, "r");
if (fin == NULL) {
perror(local + 1);
(void) signal(SIGINT, oldintr);
(void) signal(SIGPIPE, oldintp);
code = -1;
return;
}
closefunc = pclose;
} else {
fin = fopen(local, "r");
if (fin == NULL) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
closefunc = fclose;
if (fstat(fileno(fin), &st) < 0 ||
(st.st_mode&S_IFMT) != S_IFREG) {
fprintf(stdout, "%s: not a plain file.\n", local);
(void) signal(SIGINT, oldintr);
fclose(fin);
code = -1;
return;
}
}
if (initconn()) {
(void) signal(SIGINT, oldintr);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
code = -1;
if (closefunc != NULL)
(*closefunc)(fin);
return;
}
if (sigsetjmp(sendabort, 1))
goto abort;
if (restart_point &&
(strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
if (fseek(fin, (long) restart_point, 0) < 0) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
restart_point = 0;
if (closefunc != NULL)
(*closefunc)(fin);
return;
}
if (command("REST %ld", (long) restart_point)
!= CONTINUE) {
restart_point = 0;
if (closefunc != NULL)
(*closefunc)(fin);
return;
}
restart_point = 0;
lmode = "r+w";
}
if (remote) {
if (command("%s %s", cmd, remote) != PRELIM) {
(void) signal(SIGINT, oldintr);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
if (closefunc != NULL)
(*closefunc)(fin);
return;
}
} else
if (command("%s", cmd) != PRELIM) {
(void) signal(SIGINT, oldintr);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
if (closefunc != NULL)
(*closefunc)(fin);
return;
}
dout = dataconn(lmode);
if (dout == NULL)
goto abort;
(void) gettimeofday(&start, (struct timezone *)0);
oldintp = signal(SIGPIPE, SIG_IGN);
switch (curtype) {
case TYPE_I:
case TYPE_L:
errno = d = 0;
while ((c = read(fileno(fin), buf, sizeof (buf))) > 0) {
bytes += c;
for (bufp = buf; c > 0; c -= d, bufp += d)
if ((d = write(fileno(dout), bufp, c)) <= 0)
break;
if (hash) {
while (bytes >= hashbytes) { /* <-- 'long long' signed overflow is */
(void) putchar('#'); /* possible. In this case, we can */
hashbytes += HASHBYTES; /* 'cycle' there for very long time. */
} /* Search 'hasbytes' in file down, */
(void) fflush(stdout); /* there are similar parts. */
} /* <praszyk@redhat.com> */
if (tick && (bytes >= hashbytes)) {
printf("\rBytes transferred: %lld", bytes);
(void) fflush(stdout);
while (bytes >= hashbytes)
hashbytes += TICKBYTES;
}
}
if (hash && (bytes > 0)) {
if (bytes < HASHBYTES)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (tick) {
(void) printf("\rBytes transferred: %lld\n", bytes);
(void) fflush(stdout);
}
if (c < 0)
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
if (d < 0) {
if (errno != EPIPE)
perror("netout");
bytes = -1;
}
break;
case TYPE_A:
while ((c = getc(fin)) != EOF) {
if (c == '\n') {
while (hash && (bytes >= hashbytes)) {
(void) putchar('#');
(void) fflush(stdout);
hashbytes += HASHBYTES;
}
if (tick && (bytes >= hashbytes)) {
(void) printf("\rBytes transferred: %lld",
bytes);
(void) fflush(stdout);
while (bytes >= hashbytes)
hashbytes += TICKBYTES;
}
if (ferror(dout))
break;
(void) putc('\r', dout);
bytes++;
}
(void) putc(c, dout);
bytes++;
/* if (c == '\r') { */
/* (void) putc('\0', dout); (* this violates rfc */
/* bytes++; */
/* } */
}
if (hash) {
if (bytes < hashbytes)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (tick) {
(void) printf("\rBytes transferred: %lld\n", bytes);
(void) fflush(stdout);
}
if (ferror(fin))
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
if (ferror(dout)) {
if (errno != EPIPE)
perror("netout");
bytes = -1;
}
break;
}
(void) gettimeofday(&stop, (struct timezone *)0);
if (closefunc != NULL)
(*closefunc)(fin);
(void) fclose(dout);
/* closes data as well, so discard it */
data = -1;
old_code_l = code;
(void) getreply(0);
/* Following "if" will avoid a bug #165083 in ftp-server */
/* It can be later removed. */
if (old_code_l == 150 && code == 150 && cpend == 1
&& sunique == 1 && cin != NULL && fileno (cin) >= 0 ) {
struct pollfd fds_events_l [2] ;
int rc;
fds_events_l [0] .fd = fileno (cin);
fds_events_l [0] .events = POLLIN | POLLERR | POLLHUP;
rc = poll (fds_events_l, 1, 5000);
switch (rc) {
case 1:
(void) getreply (0);
break;
case 0:
fprintf (stderr, "ftp: no answer from ftp-server "
"(more than 5 sec).\n");
break;
case -1:
perror("ftp: poll");
break;
}
}
(void) signal(SIGINT, oldintr);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
if (bytes > 0)
ptransfer("sent", bytes, &start, &stop);
return;
abort:
(void) gettimeofday(&stop, (struct timezone *)0);
(void) signal(SIGINT, oldintr);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
if (!cpend) {
code = -1;
return;
}
if (dout) {
(void) fclose(dout);
}
if (data >= 0) {
/* if it just got closed with dout, again won't hurt */
(void) close(data);
data = -1;
}
(void) getreply(0);
code = -1;
if (closefunc != NULL && fin != NULL)
(*closefunc)(fin);
if (bytes > 0)
ptransfer("sent", bytes, &start, &stop);
}
static void
abortrecv(int ignore)
{
(void)ignore;
mflag = 0;
abrtflag = 0;
printf("\nreceive aborted\nwaiting for remote to finish abort\n");
(void) fflush(stdout);
siglongjmp(recvabort, 1);
}
void
recvrequest(const char *cmd,
char *volatile local, char *remote,
const char *lmode, int printnames)
{
FILE *volatile fout, *volatile din = 0;
int (*volatile closefunc)(FILE *);
void (*volatile oldintp)(int);
void (*volatile oldintr)(int);
volatile int is_retr, tcrflag, bare_lfs = 0;
static unsigned bufsize=0;
static char *buf;
volatile long long bytes = 0, hashbytes = HASHBYTES;
register int c, d;
struct timeval start, stop;
struct stat st;
is_retr = strcmp(cmd, "RETR") == 0;
if (is_retr && verbose && printnames) {
if (local && *local != '-')
printf("local: %s ", local);
if (remote)
printf("remote: %s\n", remote);
}
if (proxy && is_retr) {
proxtrans(cmd, local, remote);
return;
}
closefunc = NULL;
oldintr = NULL;
oldintp = NULL;
tcrflag = !crflag && is_retr;
if (sigsetjmp(recvabort, 1)) {
while (cpend) {
(void) getreply(0);
}
if (data >= 0) {
(void) close(data);
data = -1;
}
if (oldintr)
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
oldintr = signal(SIGINT, abortrecv);
if (strcmp(local, "-") && *local != '|') {
if (access(local, W_OK) < 0) {
char *dir = rindex(local, '/');
if (errno != ENOENT && errno != EACCES) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
if (dir != NULL)
*dir = 0;
d = access(dir ? local : ".", W_OK);
if (dir != NULL)
*dir = '/';
if (d < 0) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
if (!runique && errno == EACCES &&
chmod(local, 0600) < 0) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
/*
* Believe it or not, this was actually
* repeated in the original source.
*/
(void) signal(SIGINT, oldintr);
/*(void) signal(SIGINT, oldintr);*/
code = -1;
return;
}
if (runique && errno == EACCES &&
(local = gunique(local)) == NULL) {
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
}
else if (runique && (strcmp(cmd, "NLST") != 0) &&
(local = gunique(local)) == NULL)
{
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
}
if (!is_retr) {
if (curtype != TYPE_A)
changetype(TYPE_A, 0);
}
else if (curtype != type) {
changetype(type, 0);
}
if (initconn()) {
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
if (sigsetjmp(recvabort, 1))
goto abort;
if (is_retr && restart_point &&
command("REST %ld", (long) restart_point) != CONTINUE)
return;
if (remote) {
if (command("%s %s", cmd, remote) != PRELIM) {
(void) signal(SIGINT, oldintr);
return;
}
}
else {
if (command("%s", cmd) != PRELIM) {
(void) signal(SIGINT, oldintr);
return;
}
}
din = dataconn("r");
if (din == NULL)
goto abort;
if (strcmp(local, "-") == 0)
fout = stdout;
else if (*local == '|') {
oldintp = signal(SIGPIPE, SIG_IGN);
fout = popen(local + 1, "w");
if (fout == NULL) {
perror(local+1);
goto abort;
}
closefunc = pclose;
}
else {
fout = fopen(local, lmode);
if (fout == NULL) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
goto abort;
}
closefunc = fclose;
}
if (fstat(fileno(fout), &st) < 0 || st.st_blksize == 0)
st.st_blksize = BUFSIZ;
if ((unsigned)st.st_blksize > bufsize) {
if (buf)
(void) free(buf);
buf = malloc((unsigned)st.st_blksize);
if (buf == NULL) {
perror("malloc");
bufsize = 0;
goto abort;
}
bufsize = st.st_blksize;
}
(void) gettimeofday(&start, (struct timezone *)0);
switch (curtype) {
case TYPE_I:
case TYPE_L:
if (restart_point &&
lseek(fileno(fout), (long) restart_point, L_SET) < 0) {
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
if (closefunc != NULL)
(*closefunc)(fout);
return;
}
errno = d = 0;
while ((c = read(fileno(din), buf, bufsize)) > 0) {
if ((d = write(fileno(fout), buf, c)) != c)
break;
bytes += c;
if (hash && is_retr) {
while (bytes >= hashbytes) {
(void) putchar('#');
hashbytes += HASHBYTES;
}
(void) fflush(stdout);
}
if (tick && (bytes >= hashbytes) && is_retr) {
(void) printf("\rBytes transferred: %lld",
bytes);
(void) fflush(stdout);
while (bytes >= hashbytes)
hashbytes += TICKBYTES;
}
}
if (hash && bytes > 0) {
if (bytes < HASHBYTES)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (tick && is_retr) {
(void) printf("\rBytes transferred: %lld\n", bytes);
(void) fflush(stdout);
}
if (c < 0) {
if (errno != EPIPE)
perror("netin");
bytes = -1;
}
if (d < c) {
if (d < 0)
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
else
fprintf(stderr, "%s: short write\n", local);
}
break;
case TYPE_A:
if (restart_point) {
register int i, n, ch;
if (fseek(fout, 0L, L_SET) < 0)
goto done;
n = restart_point;
for (i = 0; i++ < n;) {
if ((ch = getc(fout)) == EOF)
goto done;
if (ch == '\n')
i++;
}
if (fseek(fout, 0L, L_INCR) < 0) {
done:
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
if (closefunc != NULL)
(*closefunc)(fout);
return;
}
}
while ((c = getc(din)) != EOF) {
if (c == '\n')
bare_lfs++;
while (c == '\r') {
while (hash && (bytes >= hashbytes)
&& is_retr) {
(void) putchar('#');
(void) fflush(stdout);
hashbytes += HASHBYTES;
}
if (tick && (bytes >= hashbytes) && is_retr) {
printf("\rBytes transferred: %lld",
bytes);
fflush(stdout);
while (bytes >= hashbytes)
hashbytes += TICKBYTES;
}
bytes++;
if ((c = getc(din)) != '\n' || tcrflag) {
if (ferror(fout))
goto break2;
(void) putc('\r', fout);
if (c == '\0') {
bytes++;
goto contin2;
}
if (c == EOF)
goto contin2;
}
}
(void) putc(c, fout);
bytes++;
contin2: ;
}
break2:
if (hash && is_retr) {
if (bytes < hashbytes)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (tick && is_retr) {
(void) printf("\rBytes transferred: %lld\n", bytes);
(void) fflush(stdout);
}
if (bare_lfs) {
printf("WARNING! %d bare linefeeds received in ASCII mode\n", bare_lfs);
printf("File may not have transferred correctly.\n");
}
if (ferror(din)) {
if (errno != EPIPE)
perror("netin");
bytes = -1;
}
if (ferror(fout))
fprintf(stderr, "local: %s: %s\n", local,
strerror(errno));
break;
}
if (closefunc != NULL)
(*closefunc)(fout);
(void) signal(SIGINT, oldintr);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
(void) gettimeofday(&stop, (struct timezone *)0);
(void) fclose(din);
/* closes data as well, so discard it */
data = -1;
(void) getreply(0);
if (bytes > 0 && is_retr)
ptransfer("received", bytes, &start, &stop);
return;
abort:
/* abort using RFC959 recommended IP,SYNC sequence */
(void) gettimeofday(&stop, (struct timezone *)0);
if (oldintp)
(void) signal(SIGPIPE, oldintp);
(void) signal(SIGINT, SIG_IGN);
if (!cpend) {
code = -1;
(void) signal(SIGINT, oldintr);
return;
}
abort_remote(din);
code = -1;
if (closefunc != NULL && fout != NULL)
(*closefunc)(fout);
if (din) {
(void) fclose(din);
}
if (data >= 0) {
/* if it just got closed with din, again won't hurt */
(void) close(data);
data = -1;
}
if (bytes > 0)
ptransfer("received", bytes, &start, &stop);
(void) signal(SIGINT, oldintr);
}
/*
* Need to start a listen on the data channel before we send the command,
* otherwise the server's connect may fail.
*/
static int
initconn(void)
{
int rc;
u_char *p, *a;
int result, tmpno = 0;
socklen_t len;
int on = 1;
int tos, error = 0;
u_int ad[16], po[2], af, alen, plen;
char *pasvcmd = NULL;
char hbuf[MAXHOSTNAMELEN], pbuf[NI_MAXSERV];
struct timeval timeout;
timeout.tv_sec = 30;
timeout.tv_usec = 0;
#ifdef INET6
if (myctladdr.su_family == AF_INET6
&& (IN6_IS_ADDR_LINKLOCAL(&myctladdr.su_sin6.sin6_addr)
|| IN6_IS_ADDR_SITELOCAL(&myctladdr.su_sin6.sin6_addr))) {
fprintf(stderr, "use of scoped address can be troublesome\n");
}
#endif
if (passivemode) {
if (data >= 0){
rc = close (data);
data = -1;
if (rc == -1){
perror ("ftp: close");
}
}
data_addr = hisctladdr;
data = socket(data_addr.su_family, SOCK_STREAM, 0);
if (data < 0) {
perror("ftp: socket");
return(1);
}
if((multihome) &&
bind(data, (struct sockaddr *)&source, sizeof(source)) == -1) {
close(data);
data = -1;
perror("ftp multihome bind");
return(1);
}
if (options & SO_DEBUG &&
setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
sizeof (on)) < 0)
perror("ftp: setsockopt (ignored)");
switch (data_addr.su_family) {
case AF_INET:
#if 0
/*@*/ if (try_epsv) {
/*@*/ result = command(pasvcmd = "EPSV 1");
/*@*/ if (code / 10 == 22 && code != 229) {
/*@*/ fprintf(stderr,
/*@*/ "wrong server: return code must be 229\n");
/*@*/ result = COMPLETE + 1;
/*@*/ }
/*@*/ } else {
#endif
result = COMPLETE + 1;
if (result != COMPLETE) {
try_epsv = 0;
result = command(pasvcmd = "PASV");
}
break;
#ifdef INET6
case AF_INET6:
if (try_epsv) {
result = command(pasvcmd = "EPSV 2");
if (code / 10 == 22 && code != 229) {
fprintf(stderr,
"wrong server: return code must be 229\n");
result = COMPLETE + 1;
}
} else {
result = COMPLETE + 1;
}
if (result != COMPLETE) {
try_epsv = 0;
result = command(pasvcmd = "LPSV");
}
break;
#endif
default:
result = COMPLETE + 1;
break;
}
if (result != COMPLETE) {
printf("Passive mode refused.\n");
goto bad;
}
#define pack2(var) \
(((var[0] & 0xff) << 8) | ((var[1] & 0xff) << 0))
#define pack4(var) \
((((var)[0] & 0xff) << 24) | (((var)[1] & 0xff) << 16) | \
(((var)[2] & 0xff) << 8) | (((var)[3] & 0xff) << 0))
/*
* What we've got at this point is a string of comma separated
* one-byte unsigned integer values, separated by commas.
*/
error = 0;
if (strcmp(pasvcmd, "PASV") == 0) {
if (data_addr.su_family != AF_INET) {
error = 2;
goto psv_done;
}
if (code / 10 == 22 && code != 227) {
error = 227;
goto psv_done;
}
if (sscanf(pasv, "%u,%u,%u,%u,%u,%u",
&ad[0], &ad[1], &ad[2], &ad[3],
&po[0], &po[1]) != 6) {
error = 1;
goto psv_done;
}
data_addr.su_sin.sin_addr.s_addr = htonl(pack4(ad));
data_addr.su_port = htons(pack2(po));
} else
if (strcmp(pasvcmd, "LPSV") == 0) {
if (code / 10 == 22 && code != 228) {
error = 228;
goto psv_done;
}
switch (data_addr.su_family) {
case AF_INET:
if (sscanf(pasv, "%u,%u,%u,%u,%u,%u,%u,%u,%u",
&af, &alen,
&ad[0], &ad[1], &ad[2], &ad[3],
&plen, &po[0], &po[1]) != 9) {
error = 1;
goto psv_done;
}
if (af != 4 || alen != 4 || plen != 2) {
error = 2;
goto psv_done;
}
data_addr.su_sin.sin_addr.s_addr =
htonl(pack4(ad));
data_addr.su_port = htons(pack2(po));
break;
#ifdef INET6
case AF_INET6:
if (sscanf(pasv,
"%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u",
&af, &alen,
&ad[0], &ad[1], &ad[2], &ad[3],
&ad[4], &ad[5], &ad[6], &ad[7],
&ad[8], &ad[9], &ad[10], &ad[11],
&ad[12], &ad[13], &ad[14], &ad[15],
&plen, &po[0], &po[1]) != 21) {
error = 1;
goto psv_done;
}
if (af != 6 || alen != 16 || plen != 2) {
error = 2;
goto psv_done;
}
data_addr.su_sin6.sin6_addr.s6_addr32[0] =
htonl(pack4(ad));
data_addr.su_sin6.sin6_addr.s6_addr32[1] =
htonl(pack4(ad+4));
data_addr.su_sin6.sin6_addr.s6_addr32[2] =
htonl(pack4(ad+8));
data_addr.su_sin6.sin6_addr.s6_addr32[3] =
htonl(pack4(ad+12));
data_addr.su_port = htons(pack2(po));
break;
#endif
default:
error = 1;
}
} else if (strncmp(pasvcmd, "EPSV", 4) == 0) {
char delim[4];
u_int epsvpo;
if (code / 10 == 22 && code != 229) {
error = 229;
goto psv_done;
}
if (sscanf(pasv, "%c%c%c%u%c", &delim[0], &delim[1],
&delim[2], &epsvpo, &delim[3]) != 5) {
error = 1;
goto psv_done;
}
if (delim[0] != delim[1] || delim[0] != delim[2]
|| delim[0] != delim[3]) {
error = 1;
goto psv_done;
}
data_addr.su_port = htons(epsvpo);
} else {
error = 1;
}
psv_done:
switch (error) {
case 0:
break;
case 1:
fprintf(stderr,
"Passive mode address scan failure. Shouldn't happen!\n");
goto bad;
case 2:
fprintf(stderr,
"Passive mode AF mismatch. Shouldn't happen!\n");
goto bad;
case 227:
case 228:
case 229:
fprintf(stderr,
"wrong server: return code must be %d\n", error);
goto bad;
default:
fprintf(stderr, "Bug\n");
}
if (connect(data, (struct sockaddr *) &data_addr,
(data_addr.su_family == AF_INET ?
sizeof(data_addr.su_sin) :
sizeof(data_addr.su_sin6)))<0) {
perror("ftp: connect");
return(1);
}
#ifdef IP_TOS
if (data_addr.su_family == AF_INET)
{
tos = IPTOS_THROUGHPUT;
if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&tos,
sizeof(tos)) < 0)
perror("ftp: setsockopt TOS (ignored)");
}
#endif
return(0);
}
noport:
data_addr = myctladdr;
if (sendport)
data_addr.su_port = 0; /* let system pick one */
if (data != -1)
(void) close(data);
data = socket(data_addr.su_family, SOCK_STREAM, 0);
if (data < 0) {
perror("ftp: socket");
if (tmpno)
sendport = 1;
return (1);
}
if (!sendport)
if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof (on)) < 0) {
perror("ftp: setsockopt (reuse address)");
goto bad;
}
if (setsockopt (data, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,
sizeof(timeout)) < 0) {
perror("ftp: setsockopt failed\n");
}
if (bind(data, (struct sockaddr *)&data_addr, sizeof (data_addr)) < 0) {
perror("ftp: bind");
goto bad;
}
if (options & SO_DEBUG &&
setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof (on)) < 0)
perror("ftp: setsockopt (ignored)");
len = sizeof (data_addr);
if (getsockname(data, (struct sockaddr *)&data_addr, &len) < 0) {
perror("ftp: getsockname");
goto bad;
}
if (listen(data, 1) < 0)
perror("ftp: listen");
if (sendport) {
af = ex_af2prot(data_addr.su_family);
if (try_eprt && af > 1) { /* only IPv6 */
if (getnameinfo((struct sockaddr *)&data_addr, len,
hbuf, sizeof(hbuf), pbuf, sizeof(pbuf),
NI_NUMERICHOST | NI_NUMERICSERV) == 0) {
result = command("EPRT |%d|%s|%s|",
af, hbuf, pbuf);
if (result != COMPLETE) {
try_eprt = 0;
}
} else {
result = ERROR;
}
} else {
result = COMPLETE + 1;
}
if (result == COMPLETE)
goto prt_done;
p = (u_char *)&data_addr.su_port;
switch (data_addr.su_family) {
case AF_INET:
a = (u_char *)&data_addr.su_sin.sin_addr;
result = command("PORT %u,%u,%u,%u,%u,%u",
a[0], a[1], a[2], a[3], p[0], p[1]);
break;
#ifdef INET6
case AF_INET6:
a = (u_char *)&data_addr.su_sin6.sin6_addr;
result = command(
"LPRT 6,16,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,2,%d,%d",
a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
a[8], a[9],a[10],a[11],a[12],a[13],a[14],a[15],
p[0], p[1]);
break;
#endif
default:
result = COMPLETE + 1; /* xxx */
}
prt_done:
if (result == ERROR && sendport == -1) {
sendport = 0;
tmpno = 1;
goto noport;
}
return (result != COMPLETE);
}
if (tmpno)
sendport = 1;
#ifdef IP_TOS
if (data_addr.su_family == AF_INET)
{
on = IPTOS_THROUGHPUT;
if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0)
perror("ftp: setsockopt TOS (ignored)");
}
#endif
return (0);
bad:
(void) close(data), data = -1;
if (tmpno)
sendport = 1;
return (1);
}
static FILE *
dataconn(const char *lmode)
{
union sockunion from;
int s, tos;
socklen_t fromlen = sizeof(from);
if (passivemode)
return (fdopen(data, lmode));
s = accept(data, (struct sockaddr *) &from, &fromlen);
if (s < 0) {
perror("ftp: accept");
(void) close(data), data = -1;
return (NULL);
}
(void) close(data);
data = s;
#ifdef IP_TOS
if (from.su_family == AF_INET)
{
tos = IPTOS_THROUGHPUT;
if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0)
perror("ftp: setsockopt TOS (ignored)");
}
#endif
return (fdopen(data, lmode));
}
static void
ptransfer(const char *direction, long long bytes,
const struct timeval *t0,
const struct timeval *t1)
{
struct timeval td;
float s, bs;
if (verbose) {
tvsub(&td, t1, t0);
s = td.tv_sec + (td.tv_usec / 1000000.);
#define nz(x) ((x) == 0 ? 1 : (x))
bs = bytes / nz(s);
printf("%lld bytes %s in %.3g secs (%.2f Kbytes/sec)\n",
bytes, direction, s, bs / 1000.0);
}
}
#if 0
tvadd(tsum, t0)
struct timeval *tsum, *t0;
{
tsum->tv_sec += t0->tv_sec;
tsum->tv_usec += t0->tv_usec;
if (tsum->tv_usec > 1000000)
tsum->tv_sec++, tsum->tv_usec -= 1000000;
}
#endif
static void
tvsub(struct timeval *tdiff,
const struct timeval *t1,
const struct timeval *t0)
{
tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
if (tdiff->tv_usec < 0)
tdiff->tv_sec--, tdiff->tv_usec += 1000000;
}
static
void
psabort(int ignore)
{
(void)ignore;
abrtflag++;
}
void
pswitch(int flag)
{
void (*oldintr)(int);
static struct comvars {
int connect;
char name[MAXHOSTNAMELEN];
union sockunion mctl;
union sockunion hctl;
FILE *in;
FILE *out;
int tpe;
int curtpe;
int cpnd;
int sunqe;
int runqe;
int mcse;
int ntflg;
char nti[NTRANS_MAX+1];
char nto[NTRANS_MAX+1];
int mapflg;
char mi[MAXPATHLEN];
char mo[MAXPATHLEN];
} proxstruct, tmpstruct;
struct comvars *ip, *op;
abrtflag = 0;
oldintr = signal(SIGINT, psabort);
if (flag) {
if (proxy)
return;
ip = &tmpstruct;
op = &proxstruct;
proxy++;
}
else {
if (!proxy)
return;
ip = &proxstruct;
op = &tmpstruct;
proxy = 0;
}
ip->connect = connected;
connected = op->connect;
if (hostname) {
(void) strncpy(ip->name, hostname, sizeof(ip->name) - 1);
ip->name[sizeof(ip->name) - 1] = '\0';
}
else {
ip->name[0] = 0;
}
hostname = op->name;
ip->hctl = hisctladdr;
hisctladdr = op->hctl;
ip->mctl = myctladdr;
myctladdr = op->mctl;
ip->in = cin;
cin = op->in;
ip->out = cout;
cout = op->out;
ip->tpe = type;
type = op->tpe;
ip->curtpe = curtype;
curtype = op->curtpe;
ip->cpnd = cpend;
cpend = op->cpnd;
ip->sunqe = sunique;
sunique = op->sunqe;
ip->runqe = runique;
runique = op->runqe;
ip->mcse = mcase;
mcase = op->mcse;
ip->ntflg = ntflag;
ntflag = op->ntflg;
(void) strncpy(ip->nti, ntin, NTRANS_MAX);
(ip->nti)[NTRANS_MAX] = '\0'; /* shouldn't use strlen */
(void) strcpy(ntin, op->nti);
(void) strncpy(ip->nto, ntout, NTRANS_MAX);
(ip->nto)[NTRANS_MAX] = '\0';
(void) strcpy(ntout, op->nto);
ip->mapflg = mapflag;
mapflag = op->mapflg;
(void) strncpy(ip->mi, mapin, MAXPATHLEN - 1);
(ip->mi)[MAXPATHLEN - 1] = '\0';
(void) strcpy(mapin, op->mi);
(void) strncpy(ip->mo, mapout, MAXPATHLEN - 1);
(ip->mo)[MAXPATHLEN - 1] = '\0';
(void) strcpy(mapout, op->mo);
(void) signal(SIGINT, oldintr);
if (abrtflag) {
abrtflag = 0;
(*oldintr)(SIGINT);
}
}
static
void
abortpt(int ignore)
{
(void)ignore;
printf("\n");
fflush(stdout);
ptabflg++;
mflag = 0;
abrtflag = 0;
siglongjmp(ptabort, 1);
}
static void
proxtrans(const char *cmd, char *local, char *remote)
{
void (*volatile oldintr)(int);
volatile int secndflag = 0, prox_type, nfnd;
const char *volatile cmd2;
fd_set mask;
if (strcmp(cmd, "RETR"))
cmd2 = "RETR";
else
cmd2 = runique ? "STOU" : "STOR";
if ((prox_type = type) == 0) {
if (unix_server && unix_proxy)
prox_type = TYPE_I;
else
prox_type = TYPE_A;
}
if (curtype != prox_type)
changetype(prox_type, 1);
if (command("PASV") != COMPLETE) {
printf("proxy server does not support third party transfers.\n");
return;
}
pswitch(0);
if (!connected) {
printf("No primary connection\n");
pswitch(1);
code = -1;
return;
}
if (curtype != prox_type)
changetype(prox_type, 1);
if (command("PORT %s", pasv) != COMPLETE) {
pswitch(1);
return;
}
if (sigsetjmp(ptabort, 1))
goto abort;
oldintr = signal(SIGINT, abortpt);
if (command("%s %s", cmd, remote) != PRELIM) {
(void) signal(SIGINT, oldintr);
pswitch(1);
return;
}
sleep(2);
pswitch(1);
secndflag++;
if (command("%s %s", cmd2, local) != PRELIM)
goto abort;
ptflag++;
(void) getreply(0);
pswitch(0);
(void) getreply(0);
(void) signal(SIGINT, oldintr);
pswitch(1);
ptflag = 0;
printf("local: %s remote: %s\n", local, remote);
return;
abort:
(void) signal(SIGINT, SIG_IGN);
ptflag = 0;
if (strcmp(cmd, "RETR") && !proxy)
pswitch(1);
else if (!strcmp(cmd, "RETR") && proxy)
pswitch(0);
if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
if (command("%s %s", cmd2, local) != PRELIM) {
pswitch(0);
if (cpend)
abort_remote((FILE *) NULL);
}
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
return;
}
if (cpend)
abort_remote((FILE *) NULL);
pswitch(!proxy);
if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
if (command("%s %s", cmd2, local) != PRELIM) {
pswitch(0);
if (cpend)
abort_remote((FILE *) NULL);
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
return;
}
}
if (cpend)
abort_remote((FILE *) NULL);
pswitch(!proxy);
if (cpend) {
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask, fileno(cin), 10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer(0);
if(cout != NULL)
{
fclose(cout);
cout = NULL;
}
}
(void) getreply(0);
(void) getreply(0);
}
if (proxy)
pswitch(0);
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
}
void
reset(void)
{
fd_set mask;
int nfnd = 1;
FD_ZERO(&mask);
while (nfnd > 0) {
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask, fileno(cin), 0)) < 0) {
perror("reset");
code = -1;
lostpeer(0);
if(cout != NULL)
{
fclose(cout);
cout = NULL;
}
}
else if (nfnd) {
(void) getreply(0);
}
}
}
static char *
gunique(char *local)
{
static char new[MAXPATHLEN];
char *cp = rindex(local, '/');
int d, count=0;
char ext = '1';
if (cp)
*cp = '\0';
d = access(cp ? local : ".", W_OK);
if (cp)
*cp = '/';
if (d < 0) {
fprintf(stderr, "local: %s: %s\n", local, strerror(errno));
return((char *) 0);
}
(void) strcpy(new, local);
cp = new + strlen(new);
*cp++ = '.';
while (!d) {
if (++count == 100) {
printf("runique: can't find unique file name.\n");
return((char *) 0);
}
*cp++ = ext;
*cp = '\0';
if (ext == '9')
ext = '0';
else
ext++;
if ((d = access(new, F_OK)) < 0)
break;
if (ext != '0')
cp--;
else if (*(cp - 2) == '.')
*(cp - 1) = '1';
else {
*(cp - 2) = *(cp - 2) + 1;
cp--;
}
}
return(new);
}
static void
abort_remote(FILE *din)
{
char buf[BUFSIZ];
int nfnd, hifd;
fd_set mask;
/*
* send IAC in urgent mode instead of DM because 4.3BSD places oob mark
* after urgent byte rather than before as is protocol now
*/
snprintf(buf, sizeof(buf), "%c%c%c", IAC, IP, IAC);
if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
perror("abort");
fprintf(cout,"%cABOR\r\n", DM);
(void) fflush(cout);
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
hifd = fileno(cin);
if (din) {
FD_SET(fileno(din), &mask);
if (hifd < fileno(din)) hifd = fileno(din);
}
if ((nfnd = empty(&mask, hifd, 10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer(0);
if(cout != NULL)
{
fclose(cout);
cout = NULL;
}
}
if (din && FD_ISSET(fileno(din), &mask)) {
while (read(fileno(din), buf, BUFSIZ) > 0)
/* LOOP */;
}
if (getreply(0) == ERROR && code == 552) {
/* 552 needed for nic style abort */
(void) getreply(0);
}
(void) getreply(0);
}
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
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