2.11BSD/src/ucb/ftp/ftp.c
/*
* Copyright (c) 1985, 1989 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if !defined(lint) && defined(DOSCCS)
static char sccsid[] = "@(#)ftp.c 5.28.1 (2.11BSD) 1997/10/2";
#endif
#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 <netinet/in.h>
#include <arpa/ftp.h>
#include <arpa/telnet.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <signal.h>
#include <errno.h>
#include <netdb.h>
#include <fcntl.h>
#include <pwd.h>
#include <unistd.h>
#include <varargs.h>
#include "ftp_var.h"
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64
#endif
#ifdef sun
/* FD_SET wasn't defined until 4.0. its a cheap test for uid_t presence */
#ifndef FD_SET
#define NBBY 8 /* number of bits in a byte */
/*
* Select uses bit masks of file descriptors in longs.
* These macros manipulate such bit fields (the filesystem macros use chars).
* FD_SETSIZE may be defined by the user, but the default here
* should be >= NOFILE (param.h).
*/
#ifndef FD_SETSIZE
#define FD_SETSIZE 256
#endif
typedef long fd_mask;
#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
#ifndef howmany
#define howmany(x, y) (((x)+((y)-1))/(y))
#endif
#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
typedef int uid_t;
typedef int gid_t;
#endif
#endif
struct sockaddr_in hisctladdr;
struct sockaddr_in data_addr;
int data = -1;
int abrtflag = 0;
int ptflag = 0;
int connected;
int allbinary;
struct sockaddr_in myctladdr;
uid_t getuid();
off_t restart_point = 0;
FILE *cin, *cout;
FILE *dataconn();
char *
hookup(host, port)
char *host;
int port;
{
register struct hostent *hp = 0;
int s,len;
static char hostnamebuf[80];
bzero((char *)&hisctladdr, sizeof (hisctladdr));
hisctladdr.sin_addr.s_addr = inet_addr(host);
if (hisctladdr.sin_addr.s_addr != -1) {
hisctladdr.sin_family = AF_INET;
(void) strncpy(hostnamebuf, host, sizeof(hostnamebuf));
} else {
hp = gethostbyname(host);
if (hp == NULL) {
fprintf(stderr, "ftp: %s: ", host);
herror((char *)NULL);
code = -1;
return((char *) 0);
}
hisctladdr.sin_family = hp->h_addrtype;
bcopy(hp->h_addr_list[0],
(caddr_t)&hisctladdr.sin_addr, hp->h_length);
(void) strncpy(hostnamebuf, hp->h_name, sizeof(hostnamebuf));
}
hostname = hostnamebuf;
s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
if (s < 0) {
perror("ftp: socket");
code = -1;
return (0);
}
hisctladdr.sin_port = port;
while (connect(s, &hisctladdr, sizeof (hisctladdr)) < 0) {
if (hp && hp->h_addr_list[1]) {
int oerrno = errno;
fprintf(stderr, "ftp: connect to address %s: ",
inet_ntoa(hisctladdr.sin_addr));
errno = oerrno;
perror((char *) 0);
hp->h_addr_list++;
bcopy(hp->h_addr_list[0],
(caddr_t)&hisctladdr.sin_addr, hp->h_length);
fprintf(stdout, "Trying %s...\n",
inet_ntoa(hisctladdr.sin_addr));
(void) close(s);
s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
if (s < 0) {
perror("ftp: socket");
code = -1;
return (0);
}
continue;
}
perror("ftp: connect");
code = -1;
goto bad;
}
len = sizeof (myctladdr);
if (getsockname(s, (char *)&myctladdr, &len) < 0) {
perror("ftp: getsockname");
code = -1;
goto bad;
}
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.\n", hostname);
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, &on, sizeof(on))
< 0 && debug) {
perror("ftp: setsockopt");
}
}
#endif SO_OOBINLINE
return (hostname);
bad:
(void) close(s);
return ((char *)0);
}
login(host)
char *host;
{
char tmp[80];
char *user, *pass, *acct;
int n, aflag = 0;
user = pass = acct = 0;
if (ruserpass(host, &user, &pass, &acct) < 0) {
code = -1;
return(0);
}
while (user == NULL) {
char *myname = getlogin();
if (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);
(void) fgets(tmp, sizeof(tmp) - 1, stdin);
tmp[strlen(tmp) - 1] = '\0';
if (*tmp == '\0')
user = myname;
else
user = tmp;
}
n = command("USER %s", user);
if (n == CONTINUE) {
if (pass == NULL)
pass = getpass("Password:");
n = command("PASS %s", pass);
}
if (n == CONTINUE) {
aflag++;
acct = getpass("Account:");
n = command("ACCT %s", acct);
}
if (n != COMPLETE) {
fprintf(stderr, "Login failed.\n");
return (0);
}
if (!aflag && acct != NULL)
(void) command("ACCT %s", acct);
if (proxy)
return(1);
for (n = 0; n < macnum; ++n) {
if (!strcmp("init", macros[n].mac_name)) {
(void) strcpy(line, "$init");
makeargv();
domacro(margc, margv);
break;
}
}
return (1);
}
cmdabort()
{
extern jmp_buf ptabort;
printf("\n");
(void) fflush(stdout);
abrtflag++;
if (ptflag)
longjmp(ptabort,1);
}
/*VARARGS1*/
#ifdef pyr
command(fmt, va_alist)
char *fmt;
va_dcl
#else
command(fmt, args)
char *fmt;
#endif /* !pyr */
{
#ifdef pyr
va_list ap;
#endif /* pyr */
int r, (*oldintr)(), cmdabort();
abrtflag = 0;
if (debug) {
printf("---> ");
#ifdef pyr
va_start(ap);
_doprnt(fmt, ap, stdout);
va_end(ap);
#else
_doprnt(fmt, &args, stdout);
#endif /* !pyr */
printf("\n");
(void) fflush(stdout);
}
if (cout == NULL) {
perror ("No control connection for command");
code = -1;
return (0);
}
oldintr = signal(SIGINT,cmdabort);
#ifdef pyr
va_start(ap);
_doprnt(fmt, ap, cout);
va_end(ap);
#else
_doprnt(fmt, &args, cout);
#endif /* !pyr */
fprintf(cout, "\r\n");
(void) fflush(cout);
cpend = 1;
r = getreply(!strcmp(fmt, "QUIT"));
if (abrtflag && oldintr != SIG_IGN)
(*oldintr)();
(void) signal(SIGINT, oldintr);
return(r);
}
char reply_string[BUFSIZ]; /* last line of previous reply */
#include <ctype.h>
getreply(expecteof)
int expecteof;
{
register int c, n;
register int dig;
register char *cp;
int originalcode = 0, continuation = 0, (*oldintr)(), cmdabort();
int pflag = 0;
char *pt = 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();
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)
pflag = 1;
if (dig > 4 && pflag == 1 && isdigit(c))
pflag = 2;
if (pflag == 2) {
if (c != '\r' && c != ')')
*pt++ = c;
else {
*pt = '\0';
pflag = 3;
}
}
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();
if (abrtflag && oldintr != cmdabort && oldintr != SIG_IGN)
(*oldintr)();
return (n - '0');
}
}
empty(mask, sec)
struct fd_set *mask;
int sec;
{
struct timeval t;
t.tv_sec = (long) sec;
t.tv_usec = 0;
return(select(32, mask, (struct fd_set *) 0, (struct fd_set *) 0, &t));
}
jmp_buf sendabort;
abortsend()
{
mflag = 0;
abrtflag = 0;
printf("\nsend aborted\n");
(void) fflush(stdout);
longjmp(sendabort, 1);
}
#define HASHBYTES 1024
sendrequest(cmd, local, remote, printnames)
char *cmd, *local, *remote;
int printnames;
{
FILE *fin, *dout = 0, *popen();
int (*closefunc)(), pclose(), fclose(), (*oldintr)(), (*oldintp)();
int abortsend();
char buf[BUFSIZ], *bufp;
long bytes = 0, hashbytes = HASHBYTES;
register int c, d;
struct stat st;
struct timeval start, stop;
char *mode;
if (verbose && printnames) {
if (local && *local != '-')
printf("local: %s ", local);
if (remote)
printf("remote: %s\n", remote);
}
if (proxy) {
proxtrans(cmd, local, remote);
return;
}
closefunc = NULL;
oldintr = NULL;
oldintp = NULL;
mode = "w";
if (setjmp(sendabort)) {
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) {
perror(local);
(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 (setjmp(sendabort))
goto abort;
if (restart_point &&
(strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
if (fseek(fin, (long) restart_point, 0) < 0) {
perror(local);
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;
mode = "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(mode);
if (dout == NULL)
goto abort;
(void) gettimeofday(&start, (struct timezone *)0);
oldintp = signal(SIGPIPE, SIG_IGN);
switch (type) {
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) {
(void) putchar('#');
hashbytes += HASHBYTES;
}
(void) fflush(stdout);
}
}
if (hash && bytes > 0) {
if (bytes < HASHBYTES)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (c < 0)
perror(local);
if (d <= 0) {
if (d == 0)
fprintf(stderr, "netout: write returned 0?\n");
else 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 (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 (ferror(fin))
perror(local);
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);
(void) getreply(0);
(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 (data >= 0) {
(void) close(data);
data = -1;
}
if (dout)
(void) fclose(dout);
(void) getreply(0);
code = -1;
if (closefunc != NULL && fin != NULL)
(*closefunc)(fin);
if (bytes > 0)
ptransfer("sent", bytes, &start, &stop);
}
jmp_buf recvabort;
abortrecv()
{
mflag = 0;
abrtflag = 0;
printf("\n");
(void) fflush(stdout);
longjmp(recvabort, 1);
}
recvrequest(cmd, local, remote, mode, printnames)
char *cmd, *local, *remote, *mode;
{
FILE *fout, *din = 0, *popen();
int (*closefunc)(), pclose(), fclose(), (*oldintr)(), (*oldintp)();
int abortrecv(), oldverbose, oldtype = 0, is_retr, tcrflag, nfnd;
char *bufp, *gunique(), msg;
static char *buf;
static long bufsize;
long bytes = 0, hashbytes = HASHBYTES;
struct fd_set mask;
register int c, d;
struct timeval start, stop;
struct stat st;
extern char *malloc();
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 (setjmp(recvabort)) {
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, 2) < 0) {
char *dir = rindex(local, '/');
if (errno != ENOENT && errno != EACCES) {
perror(local);
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
if (dir != NULL)
*dir = 0;
d = access(dir ? local : ".", 2);
if (dir != NULL)
*dir = '/';
if (d < 0) {
perror(local);
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
if (!runique && errno == EACCES &&
chmod(local, 0600) < 0) {
perror(local);
(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 && (local = gunique(local)) == NULL) {
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
}
if (initconn()) {
(void) signal(SIGINT, oldintr);
code = -1;
return;
}
if (setjmp(recvabort))
goto abort;
if (!is_retr) {
if (type != TYPE_A && (allbinary == 0 || type != TYPE_I)) {
oldtype = type;
oldverbose = verbose;
if (!debug)
verbose = 0;
setascii();
verbose = oldverbose;
}
} else if (restart_point) {
if (command("REST %ld", (long) restart_point) != CONTINUE)
return;
}
if (remote) {
if (command("%s %s", cmd, remote) != PRELIM) {
(void) signal(SIGINT, oldintr);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
verbose = oldverbose;
}
return;
}
} else {
if (command("%s", cmd) != PRELIM) {
(void) signal(SIGINT, oldintr);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
verbose = oldverbose;
}
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, mode);
if (fout == NULL) {
perror(local);
goto abort;
}
closefunc = fclose;
}
if (fstat(fileno(fout), &st) < 0 || st.st_blksize == 0)
st.st_blksize = BUFSIZ;
if (st.st_blksize > bufsize) {
if (buf)
(void) free(buf);
buf = malloc((int)st.st_blksize);
if (buf == NULL) {
perror("malloc");
bufsize = 0;
goto abort;
}
bufsize = st.st_blksize;
}
(void) gettimeofday(&start, (struct timezone *)0);
switch (type) {
case TYPE_I:
case TYPE_L:
if (restart_point &&
lseek(fileno(fout), (long) restart_point, L_SET) < 0) {
perror(local);
if (closefunc != NULL)
(*closefunc)(fout);
return;
}
errno = d = 0;
while ((c = read(fileno(din), buf, (int)bufsize)) > 0) {
if ((d = write(fileno(fout), buf, c)) != c)
break;
bytes += c;
if (hash) {
while (bytes >= hashbytes) {
(void) putchar('#');
hashbytes += HASHBYTES;
}
(void) fflush(stdout);
}
}
if (hash && bytes > 0) {
if (bytes < HASHBYTES)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (c < 0) {
if (errno != EPIPE)
perror("netin");
bytes = -1;
}
if (d < c) {
if (d < 0)
perror(local);
else
fprintf(stderr, "%s: short write\n", local);
}
break;
case TYPE_A:
if (restart_point) {
register int i, n, c;
if (fseek(fout, 0L, L_SET) < 0)
goto done;
n = restart_point;
i = 0;
while (i++ < n) {
if ((c=getc(fout)) == EOF)
goto done;
if (c == '\n')
i++;
}
if (fseek(fout, 0L, L_INCR) < 0) {
done:
perror(local);
if (closefunc != NULL)
(*closefunc)(fout);
return;
}
}
while ((c = getc(din)) != EOF) {
while (c == '\r') {
while (hash && (bytes >= hashbytes)) {
(void) putchar('#');
(void) fflush(stdout);
hashbytes += HASHBYTES;
}
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) {
if (bytes < hashbytes)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (ferror(din)) {
if (errno != EPIPE)
perror("netin");
bytes = -1;
}
if (ferror(fout))
perror(local);
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);
(void) getreply(0);
if (bytes > 0 && is_retr)
ptransfer("received", bytes, &start, &stop);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
verbose = oldverbose;
}
return;
abort:
/* abort using RFC959 recommended IP,SYNC sequence */
(void) gettimeofday(&stop, (struct timezone *)0);
if (oldintp)
(void) signal(SIGPIPE, oldintr);
(void) signal(SIGINT,SIG_IGN);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
verbose = oldverbose;
}
if (!cpend) {
code = -1;
(void) signal(SIGINT,oldintr);
return;
}
fprintf(cout,"%c%c",IAC,IP);
(void) fflush(cout);
msg = IAC;
/* send IAC in urgent mode instead of DM because UNIX places oob mark */
/* after urgent byte rather than before as now is protocol */
if (send(fileno(cout),&msg,1,MSG_OOB) != 1) {
perror("abort");
}
fprintf(cout,"%cABOR\r\n",DM);
(void) fflush(cout);
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if (din) {
FD_SET(fileno(din), &mask);
}
if ((nfnd = empty(&mask,10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
code = -1;
lostpeer();
}
if (din && FD_ISSET(fileno(din), &mask)) {
while ((c = read(fileno(din), buf, (int)bufsize)) > 0)
;
}
if ((c = getreply(0)) == ERROR && code == 552) { /* needed for nic style abort */
if (data >= 0) {
(void) close(data);
data = -1;
}
(void) getreply(0);
}
(void) getreply(0);
code = -1;
if (data >= 0) {
(void) close(data);
data = -1;
}
if (closefunc != NULL && fout != NULL)
(*closefunc)(fout);
if (din)
(void) fclose(din);
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.
*/
int sendport = -1;
initconn()
{
register char *p, *a;
int result, len, tmpno = 0;
int on = 1;
noport:
data_addr = myctladdr;
if (sendport)
data_addr.sin_port = 0; /* let system pick one */
if (data != -1)
(void) close (data);
data = socket(AF_INET, 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 (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, (char *)&data_addr, &len) < 0) {
perror("ftp: getsockname");
goto bad;
}
if (listen(data, 1) < 0)
perror("ftp: listen");
if (sendport) {
a = (char *)&data_addr.sin_addr;
p = (char *)&data_addr.sin_port;
#define UC(b) (((int)b)&0xff)
result =
command("PORT %d,%d,%d,%d,%d,%d",
UC(a[0]), UC(a[1]), UC(a[2]), UC(a[3]),
UC(p[0]), UC(p[1]));
if (result == ERROR && sendport == -1) {
sendport = 0;
tmpno = 1;
goto noport;
}
return (result != COMPLETE);
}
if (tmpno)
sendport = 1;
return (0);
bad:
(void) close(data), data = -1;
if (tmpno)
sendport = 1;
return (1);
}
FILE *
dataconn(mode)
char *mode;
{
struct sockaddr_in from;
int s, fromlen = sizeof (from);
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;
return (fdopen(data, mode));
}
ptransfer(direction, bytes, t0, t1)
char *direction;
long bytes;
struct timeval *t0, *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("%ld bytes %s in %.2g seconds (%.2g Kbytes/s)\n",
bytes, direction, s, bs / 1024.);
}
}
/*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;
} */
tvsub(tdiff, t1, t0)
struct timeval *tdiff, *t1, *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;
}
psabort()
{
extern int abrtflag;
abrtflag++;
}
pswitch(flag)
int flag;
{
extern int proxy, abrtflag;
int (*oldintr)();
static struct comvars {
int connect;
char name[MAXHOSTNAMELEN];
struct sockaddr_in mctl;
struct sockaddr_in hctl;
FILE *in;
FILE *out;
int tpe;
int cpnd;
int sunqe;
int runqe;
int mcse;
int ntflg;
char nti[17];
char nto[17];
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[strlen(ip->name)] = '\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;
if (!type)
type = 1;
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, 16);
(ip->nti)[strlen(ip->nti)] = '\0';
(void) strcpy(ntin, op->nti);
(void) strncpy(ip->nto, ntout, 16);
(ip->nto)[strlen(ip->nto)] = '\0';
(void) strcpy(ntout, op->nto);
ip->mapflg = mapflag;
mapflag = op->mapflg;
(void) strncpy(ip->mi, mapin, MAXPATHLEN - 1);
(ip->mi)[strlen(ip->mi)] = '\0';
(void) strcpy(mapin, op->mi);
(void) strncpy(ip->mo, mapout, MAXPATHLEN - 1);
(ip->mo)[strlen(ip->mo)] = '\0';
(void) strcpy(mapout, op->mo);
(void) signal(SIGINT, oldintr);
if (abrtflag) {
abrtflag = 0;
(*oldintr)();
}
}
jmp_buf ptabort;
int ptabflg;
abortpt()
{
printf("\n");
(void) fflush(stdout);
ptabflg++;
mflag = 0;
abrtflag = 0;
longjmp(ptabort, 1);
}
proxtrans(cmd, local, remote)
char *cmd, *local, *remote;
{
int (*oldintr)(), abortpt(), tmptype, oldtype = 0, secndflag = 0, nfnd;
extern jmp_buf ptabort;
char *cmd2;
struct fd_set mask;
if (strcmp(cmd, "RETR"))
cmd2 = "RETR";
else
cmd2 = runique ? "STOU" : "STOR";
if (command("PASV") != COMPLETE) {
printf("proxy server does not support third part transfers.\n");
return;
}
tmptype = type;
pswitch(0);
if (!connected) {
printf("No primary connection\n");
pswitch(1);
code = -1;
return;
}
if (type != tmptype) {
oldtype = type;
switch (tmptype) {
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
}
if (command("PORT %s", pasv) != COMPLETE) {
switch (oldtype) {
case 0:
break;
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
pswitch(1);
return;
}
if (setjmp(ptabort))
goto abort;
oldintr = signal(SIGINT, abortpt);
if (command("%s %s", cmd, remote) != PRELIM) {
(void) signal(SIGINT, oldintr);
switch (oldtype) {
case 0:
break;
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
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);
switch (oldtype) {
case 0:
break;
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
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);
switch (oldtype) {
case 0:
break;
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
if (cpend) {
char msg[2];
fprintf(cout,"%c%c",IAC,IP);
(void) fflush(cout);
*msg = IAC;
*(msg+1) = DM;
if (send(fileno(cout),msg,2,MSG_OOB) != 2)
perror("abort");
fprintf(cout,"ABOR\r\n");
(void) fflush(cout);
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask,10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer();
}
(void) getreply(0);
(void) getreply(0);
}
}
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
return;
}
if (cpend) {
char msg[2];
fprintf(cout,"%c%c",IAC,IP);
(void) fflush(cout);
*msg = IAC;
*(msg+1) = DM;
if (send(fileno(cout),msg,2,MSG_OOB) != 2)
perror("abort");
fprintf(cout,"ABOR\r\n");
(void) fflush(cout);
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask,10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer();
}
(void) getreply(0);
(void) getreply(0);
}
pswitch(!proxy);
if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
if (command("%s %s", cmd2, local) != PRELIM) {
pswitch(0);
switch (oldtype) {
case 0:
break;
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
if (cpend) {
char msg[2];
fprintf(cout,"%c%c",IAC,IP);
(void) fflush(cout);
*msg = IAC;
*(msg+1) = DM;
if (send(fileno(cout),msg,2,MSG_OOB) != 2)
perror("abort");
fprintf(cout,"ABOR\r\n");
(void) fflush(cout);
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask,10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer();
}
(void) getreply(0);
(void) getreply(0);
}
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
return;
}
}
if (cpend) {
char msg[2];
fprintf(cout,"%c%c",IAC,IP);
(void) fflush(cout);
*msg = IAC;
*(msg+1) = DM;
if (send(fileno(cout),msg,2,MSG_OOB) != 2)
perror("abort");
fprintf(cout,"ABOR\r\n");
(void) fflush(cout);
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask,10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer();
}
(void) getreply(0);
(void) getreply(0);
}
pswitch(!proxy);
if (cpend) {
FD_ZERO(&mask);
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask,10)) <= 0) {
if (nfnd < 0) {
perror("abort");
}
if (ptabflg)
code = -1;
lostpeer();
}
(void) getreply(0);
(void) getreply(0);
}
if (proxy)
pswitch(0);
switch (oldtype) {
case 0:
break;
case TYPE_A:
setascii();
break;
case TYPE_I:
setbinary();
break;
case TYPE_E:
setebcdic();
break;
case TYPE_L:
settenex();
break;
}
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
}
reset()
{
struct fd_set mask;
int nfnd = 1;
FD_ZERO(&mask);
while (nfnd > 0) {
FD_SET(fileno(cin), &mask);
if ((nfnd = empty(&mask,0)) < 0) {
perror("reset");
code = -1;
lostpeer();
}
else if (nfnd) {
(void) getreply(0);
}
}
}
char *
gunique(local)
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 : ".", 2);
if (cp)
*cp = '/';
if (d < 0) {
perror(local);
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, 0)) < 0)
break;
if (ext != '0')
cp--;
else if (*(cp - 2) == '.')
*(cp - 1) = '1';
else {
*(cp - 2) = *(cp - 2) + 1;
cp--;
}
}
return(new);
}