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archie/prospero/user/vcache/ftp.c
Mario Fetka d71d446104 Intial commit
2024-05-27 16:13:40 +02:00

1437 lines
30 KiB
C
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/*
* Derived from Berkeley source code. Those parts are
* Copyright (c) 1985 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 MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char sccsid[] = "@(#)ftp.c 5.19 (Berkeley) 6/29/88";
#endif /* not lint */
#include "ftp_var.h" /* Dangerous ambiguous includes !!*/
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <arpa/ftp.h>
#include <arpa/telnet.h>
#include <stdio.h>
#include <posix_signal.h>
#include <errno.h>
#include <netdb.h>
#include <fcntl.h>
#include <pwd.h>
#include <string.h>
#include <pcompat.h>
#include <pmachine.h>
#include <perrno.h>
#include "vcache_macros.h"
#include <vcache.h>
#include <pfs.h> /* For quick_connect */
#include <implicit_fixes.h>
#include <sockettime.h>
#ifdef SOLARIS
/* Should be defined in stdio.h */
extern FILE *fdopen(const int fd, const char *opt);
#endif
#ifdef AIX /* lucb */
#include <sys/select.h>
#endif
#ifndef F_OPEN_TIMEOUT
#define F_OPEN_TIMEOUT 5
#endif
#ifndef F_READ_TIMEOUT
#define F_READ_TIMEOUT 60
#endif
struct sockaddr_in hisctladdr;
struct sockaddr_in data_addr;
int data = -1;
int abrtflag = 0;
int ptflag = 0;
int connected;
struct sockaddr_in myctladdr;
uid_t getuid();
FILE *cin, *cout;
FILE *dataconn();
char localerrst[MAXPATHLEN+10];
char *myhostname();
#include <pfs.h> /* for quick_connect(). */
/* Re-stated in the following declaration. Here to explain the problem: this
is difficult to declar, since SOCKADDR is different from call to call. So
we use a cast. */
extern int
quick_connect(int s, struct sockaddr *name,int namelen, int timeout);
/* Forward declerations */
static void ptransfer(char *direction, long bytes, struct timeval *t0,
struct timeval *t1, char *local,char *remote);
static void tvsub(struct timeval *tdiff, struct timeval *t1,
struct timeval *t0);
static void proxtrans( char *cmd, char *local, char *remote);
static int getreply(int expecteof);
static int initconn();
/* Returns hostname, or if fails then returns 0 and closes socket */
char *
hookup(char *host, int port)
{
int s,len;
#ifndef SELECT_APPROACH
register struct hostent *hp = 0;
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)-1);
}
else {
assert(P_IS_THIS_THREAD_MASTER());
hp = gethostbyname(host);
if (hp == NULL) {
ERRSYS("Unknown host %s:%s %s", host);
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)-1);
}
hostname = hostnamebuf;
s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
if (s < 0) {
ERRSYS("ftp: socket:%s %s");
code = -1;
return (0);
}
/* Note gopherget does ... = htons(port) */
hisctladdr.sin_port = port;
while (quick_connect(s, (struct sockaddr *) &hisctladdr,
sizeof (hisctladdr), F_OPEN_TIMEOUT) < 0) {
if (hp && hp->h_addr_list[1]) {
int oerrno = errno;
TRACE(5,"ftp: connect to address %s: ",
inet_ntoa(hisctladdr.sin_addr));
errno = oerrno;
hp->h_addr_list++;
bcopy(hp->h_addr_list[0],
(caddr_t)&hisctladdr.sin_addr, hp->h_length);
TRACE(5, "Trying %s...\n",
inet_ntoa(hisctladdr.sin_addr));
(void) close(s);
s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
if (s < 0) {
ERRSYS("ftp: socket:%s %s");
code = -1;
return (0);
}
continue;
}
ERRSYS("ftp: connect:%s %s");
code = -1;
goto bad;
}
#else
if ((s = quick_open_tcp_stream(host,port,F_OPEN_TIMEOUT)) < 0) {
ERRSYS("ftp: socket:%s %s");
code = -1;
return 0;
}
#endif /*SELECT_APPROACH*/
len = sizeof (myctladdr);
if (getsockname(s, (char *)&myctladdr, &len) < 0) {
ERRSYS("ftp: getsockname:%s %s");
code = -1;
goto bad;
}
cin = fdopen(s, "r");
cout = fdopen(s, "w");
if (cin == NULL || cout == NULL) {
ERRSYS("ftp: fdopen failed.%s: %s");
if (cin)
(void) fclose(cin);
if (cout)
(void) fclose(cout);
code = -1;
goto bad;
}
TRACE(5,"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 )
ERRSYS("ftp: setsockopt:%s %s");
}
#endif SO_OOBINLINE
#ifdef SELECT_APPROACH
return(host);
#else
return (hostname);
#endif /*SELECT_APPROACH*/
bad:
(void) close(s);
return ((char *)0);
}
int
login(char *host)
{
char tmp[80];
char *user, *pass, *l_acct, *getlogin(), *getpass();
int n, aflag = 0;
char *myhstnm, username[120], password[120], account[120];
struct passwd *whoiampw;
assert(P_IS_THIS_THREAD_MASTER()); /* getpwuid MT-Unsafe */
DISABLE_PFS(whoiampw = getpwuid(getuid()));
user = pass = l_acct = 0;
if (anonlogin) {
user = "anonymous";
if((myhstnm = myhostname()) == NULL)
myhstnm = "";
pass = password;
if (whoiampw == NULL) pass = "PROSPERO";
else sprintf(pass,"PROSPERO(%s)@%s",whoiampw->pw_name,myhstnm);
}
while (user == NULL) {
char *myname;
DISABLE_PFS(myname = getlogin());
if (myname == NULL) {
if (whoiampw != NULL)
myname = whoiampw->pw_name;
}
DISABLE_PFS(code = ruserpass(host, &user, &pass, &l_acct));
if (user) {
strncpy(username, user, sizeof(username)-1);
free(user);
user = username;
}
if (pass) {
strncpy(password, pass, sizeof(password)-1);
free(pass);
}
if (l_acct) {
strncpy(account, l_acct, sizeof(account)-1);
free(l_acct);
l_acct = account;
}
if (code < 0) {
user = pass = l_acct = NULL;
}
if (user) myname = user; /* Use name found in .netrc */
if (myname) {
TRACE(1,"Name (%s:%s): ", host, myname);
} else
TRACE(1,"Name (%s): ", host);
(void) fgets(tmp, sizeof(tmp) - 1, stdin);
tmp[strlen(tmp) - 1] = '\0';
if (*tmp == '\0')
user = myname;
else
user = tmp;
}
/* Get around bizarre bug in SCO where need putc before first fprintf*/
n = fputc('U',cout);
if (verbose) fputc('U',stderr);
n = command("SER %s", user);
if (n == CONTINUE) {
if (!anonlogin)
pass = getpass("Password:");
n = command("PASS %s", pass);
}
if (n == CONTINUE) {
aflag++;
l_acct = getpass("Account:");
n = command("ACCT %s", l_acct);
}
if (n != COMPLETE) {
ERR("Login failed.");
return (0);
}
if (!aflag && l_acct != NULL)
(void) command("ACCT %s", l_acct);
if (proxy)
return(1);
#ifdef UNDEFINED
/* Do not execute FTP macros */
for (n = 0; n < macnum; ++n) {
if (!strcmp("init", macros[n].mac_name)) {
(void) strcpy(line, "$init");
makeargv();
domacro(margc, margv);
break;
}
}
#endif UNDEFINED
return (1);
}
SIGNAL_RET_TYPE cmdabort()
{
extern jmp_buf ptabort;
TRACE(1,"\n");
abrtflag++;
if (ptflag)
longjmp(ptabort,1);
}
int
command(fmt,a1,a2,a3,a4,a5,a6,a7)
char *fmt;
int a1,a2,a3,a4,a5,a6,a7;
{
int r;
SIGNAL_RET_TYPE (*oldintr)();
SIGNAL_RET_TYPE (*cmdabpt)() = cmdabort;
abrtflag = 0;
if (verbose) {
fprintf(stderr,"---> ");
fprintf(stderr,fmt,a1,a2,a3,a4,a5,a6,a7);
fprintf(stderr,"\n");
}
if (cout == NULL) {
ERRSYS("No control connection for command:%s %s");
code = -1;
return (0);
}
oldintr = signal(SIGINT,cmdabpt);
fprintf(cout, fmt, a1,a2,a3,a4,a5,a6,a7);
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>
static int
getreply(int expecteof)
{
register int c, firstchar;
register int dig;
register char *cp;
int originalcode = 0, continuation = 0;
SIGNAL_RET_TYPE (*oldintr)();
SIGNAL_RET_TYPE (*cmdabpt)() = cmdabort;
int pflag = 0;
char *pt = pasv;
oldintr = signal(SIGINT,cmdabpt);
for (;;) {
dig = firstchar = code = 0;
cp = reply_string;
while ((c = quick_fgetc(cin,F_READ_TIMEOUT)) != '\n') {
if (verbose)
fputc(c,stderr);
if (c == IAC) { /* handle telnet commands */
switch (c = quick_fgetc(cin,F_READ_TIMEOUT)) {
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: /* Including EOF */
break;
}
continue;
}
dig++;
if (c == EOF) {
if (expecteof) {
(void) signal(SIGINT,oldintr);
code = 221;
return (0);
}
lostpeer();
if (errno == ETIMEDOUT) {
/* Unfortunately haveto return error this way*/
ERR("421 Service timed out");
} else {
ERR("421 Service not available, remote server has closed connection");
}
code = 421;
return(4);
}
if (c != '\r' && proxflag)
TRACE(1,"%s:%c",hostname,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 (firstchar == 0)
firstchar = c;
if (cp < &reply_string[sizeof(reply_string) - 1])
*cp++ = c;
} /*while*/
if (verbose > 0) {
if (verbose <= 0) fputs(" (remote)",stderr);
(void) putc(c,stderr);
(void) fflush (stderr);
}
if (continuation && code != originalcode) {
if (originalcode == 0)
originalcode = code;
continue;
}
*cp = '\0';
if (firstchar != '1')
cpend = 0;
(void) signal(SIGINT,oldintr);
if (code == 421 || originalcode == 421)
lostpeer();
if (abrtflag && oldintr != cmdabpt && oldintr != SIG_IGN)
(*oldintr)();
return (firstchar - '0');
} /*for*/
}
int
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 recvabort;
void
abortrecv()
{
mflag = 0;
abrtflag = 0;
if (verbose) {
TRACE(1,"\nreceive aborted\nwaiting for remote to finish abort\n");
(void) fflush(stdout);
}
longjmp(recvabort, 1);
}
#undef type /* needed because the compatability with the
old formula VLINKS #defines 'type'. */
int
recvrequest(char *cmd, char *local, char *remote, char *recv_mode)
{
FILE *fout, *din = 0, *mypopen();
int (*closefunc)(), mypclose(), fclose();
SIGNAL_RET_TYPE (*oldintr)(), (*oldintp)();
void abortrecv();
int oldverbose, oldtype = 0, tcrflag, nfnd;
char buf[BUFSIZ], *gunique(), msg;
long bytes = 0, hashbytes = sizeof (buf);
struct fd_set mask;
register int c, d;
int retval = 0;
struct timeval start, stop;
sprintf(localerrst,"%s (local)",local);
if (proxy && strcmp(cmd,"RETR") == 0) {
proxtrans(cmd, local, remote);
return(0);
}
closefunc = NULL;
oldintr = NULL;
oldintp = NULL;
tcrflag = !crflag && !strcmp(cmd, "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(-1);
}
oldintr = signal(SIGINT, abortrecv);
if (strcmp(local, "-") && *local != '|') {
if (access(local, 2) < 0) {
char *dir = strrchr(local, '/');
if (errno != ENOENT && errno != EACCES) {
ERRSYS("%s%s: %s",localerrst);
(void) signal(SIGINT, oldintr);
code = -1;
return(-1);
}
if (dir != NULL)
*dir = 0;
d = access(dir ? local : ".", 2);
if (dir != NULL)
*dir = '/';
if (d < 0) {
ERRSYS("%s%s: %s", localerrst);
(void) signal(SIGINT, oldintr);
code = -1;
return(-1);
}
if (!runique && errno == EACCES &&
chmod(local,0600) < 0) {
ERRSYS("%s%s: %s",localerrst);
(void) signal(SIGINT, oldintr);
code = -1;
return(-1);
}
if (runique && errno == EACCES &&
(local = gunique(local)) == NULL) {
(void) signal(SIGINT, oldintr);
code = -1;
return(-1);
}
}
else if (runique && (local = gunique(local)) == NULL) {
(void) signal(SIGINT, oldintr);
code = -1;
return(-1);
}
}
if (initconn()) {
(void) signal(SIGINT, oldintr);
code = -1;
return(-1);
}
if (setjmp(recvabort))
goto abort;
if (strcmp(cmd, "RETR") && type != TYPE_A) {
oldtype = type;
oldverbose = verbose;
if (!debug)
verbose = 0;
set_type("ascii");
verbose = oldverbose;
}
if (remote) {
if((retval = command("%s %s", cmd, remote, 0)) != PRELIM) {
(void) signal(SIGINT, oldintr);
p_err_string = qsprintf_stcopyr(p_err_string,
"ftp: %s", &reply_string);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
verbose = oldverbose;
}
return(-1);
}
} else {
if (command("%s", cmd, 0) != PRELIM) {
(void) signal(SIGINT, oldintr);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
verbose = oldverbose;
}
return(-1);
}
}
din = dataconn("r");
if (din == NULL)
goto abort;
if (strcmp(local, "-") == 0)
fout = stdout;
else if (*local == '|') {
oldintp = signal(SIGPIPE, SIG_IGN);
fout = mypopen(local + 1, "w");
if (fout == NULL) {
ERRSYS("%s%s: %s", localerrst+1);
goto abort;
}
closefunc = mypclose;
}
else {
fout = fopen(local, recv_mode);
if (fout == NULL) {
ERRSYS("%s%s: %s",localerrst);
goto abort;
}
closefunc = fclose;
}
(void) gettimeofday(&start, (struct timezone *)0);
switch (type) {
case TYPE_I:
case TYPE_L:
errno = d = 0;
while ((c = quick_read(fileno(din), buf, sizeof (buf),F_READ_TIMEOUT)) > 0) {
if ((d = write(fileno(fout), buf, c)) < 0)
break;
bytes += c;
if (hash) {
(void) putchar('#');
(void) fflush(stdout);
}
}
if (hash && bytes > 0) {
(void) putchar('\n');
(void) fflush(stdout);
}
if (c < 0)
ERRSYS("netin:%s %s");
if (d < 0)
ERRSYS("%s%s: %s", localerrst);
break;
case TYPE_A:
while ((c = quick_fgetc(din,F_READ_TIMEOUT)) != EOF) {
while (c == '\r') {
while (hash && (bytes >= hashbytes)) {
(void) putchar('#');
(void) fflush(stdout);
hashbytes += sizeof (buf);
}
bytes++;
if ((c = quick_fgetc(din, F_READ_TIMEOUT))
!= '\n' || tcrflag) {
if (ferror (fout))
break;
(void) putc ('\r', fout);
}
/*if (c == '\0') {
bytes++;
continue;
}*/
}
(void) putc (c, fout);
bytes++;
}
if (hash) {
if (bytes < hashbytes)
(void) putchar('#');
(void) putchar('\n');
(void) fflush(stdout);
}
if (ferror (din))
ERRSYS("netin:%s %s");
if (ferror (fout))
ERRSYS("%s:%s %s",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 && verbose)
ptransfer("received", bytes, &start, &stop, local, remote);
if (oldtype) {
if (!debug)
verbose = 0;
switch (oldtype) {
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
verbose = oldverbose;
}
return(0);
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:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
verbose = oldverbose;
}
if (!cpend) {
code = -1;
(void) signal(SIGINT,oldintr);
return(-1);
}
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) {
ERRSYS("abort:%s %s");
}
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) {
ERRSYS("abort:%s %s");
}
code = -1;
lostpeer();
}
if (din && FD_ISSET(fileno(din), &mask)) {
while ((c = quick_read(fileno(din), buf, sizeof (buf),F_READ_TIMEOUT)) > 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 && verbose)
ptransfer("received", bytes, &start, &stop, local, remote);
(void) signal(SIGINT,oldintr);
return(0);
}
/*
* Need to start a listen on the data channel
* before we send the command, otherwise the
* server's connect may fail.
*/
int sendport = -1;
/* Returns: 1 failure to socket !! Can leave socket open on failure */
static int
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) {
ERRSYS("ftp socket:%s %s");
if (tmpno)
sendport = 1;
return (1);
}
if (!sendport)
if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof (on)) < 0) {
ERRSYS("ftp: setsockopt (reuse address):%s %s");
goto bad;
}
if (bind(data, (struct sockaddr *)&data_addr, sizeof (data_addr)) < 0) {
ERRSYS("ftp: bind:%s %s");
goto bad;
}
if (options & SO_DEBUG &&
setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof (on)) < 0)
ERRSYS("ftp: setsockopt (ignored):%s %s");
len = sizeof (data_addr);
if (getsockname(data, (char *)&data_addr, &len) < 0) {
ERRSYS("ftp: getsockname:%s %s");
goto bad;
}
if (listen(data, 1) < 0)
ERRSYS("ftp: listen:%s %s");
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]), 0);
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(char *dataconn_mode)
{
struct sockaddr_in from;
int s, fromlen = sizeof (from);
s = accept(data, (struct sockaddr *) &from, &fromlen);
if (s < 0) {
ERRSYS("ftp: accept:%s %s");
(void) close(data), data = -1;
return (NULL);
}
(void) close(data);
data = s;
return (fdopen(data, dataconn_mode));
}
void
ptransfer(direction, bytes, t0, t1, local, remote)
char *direction, *local, *remote;
long bytes;
struct timeval *t0, *t1;
{
struct timeval td;
float s, bs;
tvsub(&td, t1, t0);
s = td.tv_sec + (td.tv_usec / 1000000.);
#define nz(x) ((x) == 0 ? 1 : (x))
bs = bytes / nz(s);
if (verbose) {
if (local && *local != '-')
TRACE(5,"local: %s ", local);
if (remote)
TRACE(5,"remote: %s\n", remote);
TRACE(5,"%ld bytes %s in %.2g seconds (%.2g Kbytes/s)\n",
bytes, direction, s, bs / 1024.);
}
}
void
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;
}
void
psabort()
{
extern int abrtflag;
abrtflag++;
}
void
pswitch(int flag)
{
extern int proxy, abrtflag;
SIGNAL_RET_TYPE (*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;
void
abortpt()
{
TRACE(1,"\n");
ptabflg++;
mflag = 0;
abrtflag = 0;
longjmp(ptabort, 1);
}
void
proxtrans(cmd, local, remote)
char *cmd, *local, *remote;
{
void abortpt();
int tmptype, oldtype = 0, secndflag = 0, nfnd;
SIGNAL_RET_TYPE (*oldintr)();
extern jmp_buf ptabort;
char *cmd2;
struct fd_set mask;
if (strcmp(cmd, "RETR"))
cmd2 = "RETR";
else
cmd2 = runique ? "STOU" : "STOR";
if (command("PASV",0) != COMPLETE) {
ERR("proxy server does not support third part transfers.");
return;
}
tmptype = type;
pswitch(0);
if (!connected) {
ERR("No primary connection");
pswitch(1);
code = -1;
return;
}
if (type != tmptype) {
oldtype = type;
switch (tmptype) {
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
}
if (command("PORT %s", pasv, 0) != COMPLETE) {
switch (oldtype) {
case 0:
break;
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
pswitch(1);
return;
}
if (setjmp(ptabort))
goto abort;
oldintr = signal(SIGINT, abortpt);
if (command("%s %s", cmd, remote, 0) != PRELIM) {
(void) signal(SIGINT, oldintr);
switch (oldtype) {
case 0:
break;
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
pswitch(1);
return;
}
sleep(2);
pswitch(1);
secndflag++;
if (command("%s %s", cmd2, local, 0) != PRELIM)
goto abort;
ptflag++;
(void) getreply(0);
pswitch(0);
(void) getreply(0);
(void) signal(SIGINT, oldintr);
switch (oldtype) {
case 0:
break;
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
pswitch(1);
ptflag = 0;
TRACE(5,"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, 0) != PRELIM) {
pswitch(0);
switch (oldtype) {
case 0:
break;
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
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)
ERRSYS("abort:%s %s");
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) {
ERRSYS("abort:%s %s");
}
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)
ERRSYS("abort:%s %s");
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) {
ERRSYS("abort:%s %s");
}
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, 0) != PRELIM) {
pswitch(0);
switch (oldtype) {
case 0:
break;
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
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)
ERRSYS("abort:%s %s");
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) {
ERRSYS("abort:%s %s");
}
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)
ERRSYS("abort:%s %s");
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) {
ERRSYS("abort:%s %s");
}
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) {
ERRSYS("abort:%s %s");
}
if (ptabflg)
code = -1;
lostpeer();
}
(void) getreply(0);
(void) getreply(0);
}
if (proxy)
pswitch(0);
switch (oldtype) {
case 0:
break;
case TYPE_A:
set_type("ascii");
break;
case TYPE_I:
set_type("binary");
break;
case TYPE_E:
set_type("ebcdic");
break;
case TYPE_L:
set_type("tenex");
break;
}
pswitch(1);
if (ptabflg)
code = -1;
(void) signal(SIGINT, oldintr);
}
void
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) {
ERRSYS("reset:%s %s");
code = -1;
lostpeer();
}
else if (nfnd) {
(void) getreply(0);
}
}
}
char *
gunique(local)
char *local;
{
static char new[MAXPATHLEN];
char *cp = strrchr(local, '/');
int d, count=0;
char ext = '1';
sprintf(localerrst,"%s (local)",local);
if (cp)
*cp = '\0';
d = access(cp ? local : ".", 2);
if (cp)
*cp = '/';
if (d < 0) {
ERRSYS("%s%s: %s", localerrst);
return((char *) 0);
}
(void) strcpy(new, local);
cp = new + strlen(new);
*cp++ = '.';
while (!d) {
if (++count == 100) {
ERR("runique: can't find unique file name.");
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);
}
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