1437 lines
30 KiB
C
1437 lines
30 KiB
C
/*
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* Derived from Berkeley source code. Those parts are
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* Copyright (c) 1985 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)ftp.c 5.19 (Berkeley) 6/29/88";
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#endif /* not lint */
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#include "ftp_var.h" /* Dangerous ambiguous includes !!*/
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <arpa/ftp.h>
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#include <arpa/telnet.h>
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#include <stdio.h>
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#include <posix_signal.h>
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#include <errno.h>
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#include <netdb.h>
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#include <fcntl.h>
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#include <pwd.h>
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#include <string.h>
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#include <pcompat.h>
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#include <pmachine.h>
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#include <perrno.h>
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#include "vcache_macros.h"
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#include <vcache.h>
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#include <pfs.h> /* For quick_connect */
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#include <implicit_fixes.h>
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#include <sockettime.h>
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#ifdef SOLARIS
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/* Should be defined in stdio.h */
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extern FILE *fdopen(const int fd, const char *opt);
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#endif
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#ifdef AIX /* lucb */
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#include <sys/select.h>
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#endif
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#ifndef F_OPEN_TIMEOUT
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#define F_OPEN_TIMEOUT 5
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#endif
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#ifndef F_READ_TIMEOUT
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#define F_READ_TIMEOUT 60
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#endif
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struct sockaddr_in hisctladdr;
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struct sockaddr_in data_addr;
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int data = -1;
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int abrtflag = 0;
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int ptflag = 0;
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int connected;
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struct sockaddr_in myctladdr;
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uid_t getuid();
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FILE *cin, *cout;
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FILE *dataconn();
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char localerrst[MAXPATHLEN+10];
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char *myhostname();
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#include <pfs.h> /* for quick_connect(). */
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/* Re-stated in the following declaration. Here to explain the problem: this
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is difficult to declar, since SOCKADDR is different from call to call. So
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we use a cast. */
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extern int
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quick_connect(int s, struct sockaddr *name,int namelen, int timeout);
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/* Forward declerations */
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static void ptransfer(char *direction, long bytes, struct timeval *t0,
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struct timeval *t1, char *local,char *remote);
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static void tvsub(struct timeval *tdiff, struct timeval *t1,
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struct timeval *t0);
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static void proxtrans( char *cmd, char *local, char *remote);
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static int getreply(int expecteof);
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static int initconn();
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/* Returns hostname, or if fails then returns 0 and closes socket */
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char *
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hookup(char *host, int port)
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{
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int s,len;
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#ifndef SELECT_APPROACH
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register struct hostent *hp = 0;
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static char hostnamebuf[80];
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bzero((char *)&hisctladdr, sizeof (hisctladdr));
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hisctladdr.sin_addr.s_addr = inet_addr(host);
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if (hisctladdr.sin_addr.s_addr != -1) {
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hisctladdr.sin_family = AF_INET;
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(void) strncpy(hostnamebuf, host, sizeof(hostnamebuf)-1);
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}
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else {
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assert(P_IS_THIS_THREAD_MASTER());
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hp = gethostbyname(host);
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if (hp == NULL) {
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ERRSYS("Unknown host %s:%s %s", host);
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code = -1;
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return((char *) 0);
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}
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hisctladdr.sin_family = hp->h_addrtype;
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bcopy(hp->h_addr_list[0],
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(caddr_t)&hisctladdr.sin_addr, hp->h_length);
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(void) strncpy(hostnamebuf, hp->h_name, sizeof(hostnamebuf)-1);
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}
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hostname = hostnamebuf;
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s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
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if (s < 0) {
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ERRSYS("ftp: socket:%s %s");
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code = -1;
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return (0);
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}
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/* Note gopherget does ... = htons(port) */
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hisctladdr.sin_port = port;
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while (quick_connect(s, (struct sockaddr *) &hisctladdr,
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sizeof (hisctladdr), F_OPEN_TIMEOUT) < 0) {
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if (hp && hp->h_addr_list[1]) {
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int oerrno = errno;
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TRACE(5,"ftp: connect to address %s: ",
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inet_ntoa(hisctladdr.sin_addr));
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errno = oerrno;
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hp->h_addr_list++;
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bcopy(hp->h_addr_list[0],
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(caddr_t)&hisctladdr.sin_addr, hp->h_length);
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TRACE(5, "Trying %s...\n",
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inet_ntoa(hisctladdr.sin_addr));
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(void) close(s);
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s = socket(hisctladdr.sin_family, SOCK_STREAM, 0);
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if (s < 0) {
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ERRSYS("ftp: socket:%s %s");
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code = -1;
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return (0);
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}
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continue;
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}
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ERRSYS("ftp: connect:%s %s");
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code = -1;
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goto bad;
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}
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#else
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if ((s = quick_open_tcp_stream(host,port,F_OPEN_TIMEOUT)) < 0) {
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ERRSYS("ftp: socket:%s %s");
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code = -1;
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return 0;
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}
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#endif /*SELECT_APPROACH*/
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len = sizeof (myctladdr);
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if (getsockname(s, (char *)&myctladdr, &len) < 0) {
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ERRSYS("ftp: getsockname:%s %s");
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code = -1;
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goto bad;
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}
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cin = fdopen(s, "r");
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cout = fdopen(s, "w");
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if (cin == NULL || cout == NULL) {
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ERRSYS("ftp: fdopen failed.%s: %s");
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if (cin)
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(void) fclose(cin);
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if (cout)
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(void) fclose(cout);
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code = -1;
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goto bad;
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}
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TRACE(5,"Connected to %s.\n", hostname);
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if (getreply(0) > 2) { /* read startup message from server */
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if (cin)
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(void) fclose(cin);
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if (cout)
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(void) fclose(cout);
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code = -1;
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goto bad;
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}
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#ifdef SO_OOBINLINE
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{
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int on = 1;
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if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, &on, sizeof(on)) < 0 )
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ERRSYS("ftp: setsockopt:%s %s");
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}
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#endif SO_OOBINLINE
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#ifdef SELECT_APPROACH
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return(host);
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#else
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return (hostname);
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#endif /*SELECT_APPROACH*/
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bad:
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(void) close(s);
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return ((char *)0);
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}
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int
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login(char *host)
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{
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char tmp[80];
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char *user, *pass, *l_acct, *getlogin(), *getpass();
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int n, aflag = 0;
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char *myhstnm, username[120], password[120], account[120];
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struct passwd *whoiampw;
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assert(P_IS_THIS_THREAD_MASTER()); /* getpwuid MT-Unsafe */
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DISABLE_PFS(whoiampw = getpwuid(getuid()));
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user = pass = l_acct = 0;
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if (anonlogin) {
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user = "anonymous";
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if((myhstnm = myhostname()) == NULL)
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myhstnm = "";
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pass = password;
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if (whoiampw == NULL) pass = "PROSPERO";
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else sprintf(pass,"PROSPERO(%s)@%s",whoiampw->pw_name,myhstnm);
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}
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while (user == NULL) {
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char *myname;
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DISABLE_PFS(myname = getlogin());
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if (myname == NULL) {
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if (whoiampw != NULL)
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myname = whoiampw->pw_name;
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}
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DISABLE_PFS(code = ruserpass(host, &user, &pass, &l_acct));
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if (user) {
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strncpy(username, user, sizeof(username)-1);
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free(user);
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user = username;
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}
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if (pass) {
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strncpy(password, pass, sizeof(password)-1);
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free(pass);
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}
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if (l_acct) {
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strncpy(account, l_acct, sizeof(account)-1);
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free(l_acct);
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l_acct = account;
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}
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if (code < 0) {
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user = pass = l_acct = NULL;
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}
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if (user) myname = user; /* Use name found in .netrc */
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if (myname) {
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TRACE(1,"Name (%s:%s): ", host, myname);
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} else
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TRACE(1,"Name (%s): ", host);
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(void) fgets(tmp, sizeof(tmp) - 1, stdin);
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tmp[strlen(tmp) - 1] = '\0';
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if (*tmp == '\0')
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user = myname;
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else
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user = tmp;
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}
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/* Get around bizarre bug in SCO where need putc before first fprintf*/
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n = fputc('U',cout);
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if (verbose) fputc('U',stderr);
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n = command("SER %s", user);
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if (n == CONTINUE) {
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if (!anonlogin)
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pass = getpass("Password:");
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n = command("PASS %s", pass);
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}
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if (n == CONTINUE) {
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aflag++;
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l_acct = getpass("Account:");
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n = command("ACCT %s", l_acct);
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}
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if (n != COMPLETE) {
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ERR("Login failed.");
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return (0);
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}
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if (!aflag && l_acct != NULL)
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(void) command("ACCT %s", l_acct);
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if (proxy)
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return(1);
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#ifdef UNDEFINED
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/* Do not execute FTP macros */
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for (n = 0; n < macnum; ++n) {
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if (!strcmp("init", macros[n].mac_name)) {
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(void) strcpy(line, "$init");
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makeargv();
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domacro(margc, margv);
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break;
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}
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}
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#endif UNDEFINED
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return (1);
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}
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SIGNAL_RET_TYPE cmdabort()
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{
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extern jmp_buf ptabort;
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TRACE(1,"\n");
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abrtflag++;
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if (ptflag)
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longjmp(ptabort,1);
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}
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int
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command(fmt,a1,a2,a3,a4,a5,a6,a7)
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char *fmt;
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int a1,a2,a3,a4,a5,a6,a7;
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{
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int r;
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SIGNAL_RET_TYPE (*oldintr)();
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SIGNAL_RET_TYPE (*cmdabpt)() = cmdabort;
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abrtflag = 0;
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if (verbose) {
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fprintf(stderr,"---> ");
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fprintf(stderr,fmt,a1,a2,a3,a4,a5,a6,a7);
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fprintf(stderr,"\n");
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}
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if (cout == NULL) {
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ERRSYS("No control connection for command:%s %s");
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code = -1;
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return (0);
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}
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oldintr = signal(SIGINT,cmdabpt);
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fprintf(cout, fmt, a1,a2,a3,a4,a5,a6,a7);
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fprintf(cout, "\r\n");
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(void) fflush(cout);
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cpend = 1;
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r = getreply(!strcmp(fmt, "QUIT"));
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if (abrtflag && oldintr != SIG_IGN)
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(*oldintr)();
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(void) signal(SIGINT, oldintr);
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return(r);
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}
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char reply_string[BUFSIZ]; /* last line of previous reply */
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#include <ctype.h>
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static int
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getreply(int expecteof)
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{
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register int c, firstchar;
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register int dig;
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register char *cp;
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int originalcode = 0, continuation = 0;
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SIGNAL_RET_TYPE (*oldintr)();
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SIGNAL_RET_TYPE (*cmdabpt)() = cmdabort;
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int pflag = 0;
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char *pt = pasv;
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oldintr = signal(SIGINT,cmdabpt);
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for (;;) {
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dig = firstchar = code = 0;
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cp = reply_string;
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while ((c = quick_fgetc(cin,F_READ_TIMEOUT)) != '\n') {
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if (verbose)
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fputc(c,stderr);
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if (c == IAC) { /* handle telnet commands */
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switch (c = quick_fgetc(cin,F_READ_TIMEOUT)) {
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case WILL:
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case WONT:
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c = getc(cin);
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fprintf(cout, "%c%c%c",IAC,DONT,c);
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(void) fflush(cout);
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break;
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case DO:
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case DONT:
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c = getc(cin);
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fprintf(cout, "%c%c%c",IAC,WONT,c);
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(void) fflush(cout);
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break;
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default: /* Including EOF */
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break;
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}
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continue;
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}
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dig++;
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if (c == EOF) {
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if (expecteof) {
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(void) signal(SIGINT,oldintr);
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code = 221;
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return (0);
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}
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lostpeer();
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if (errno == ETIMEDOUT) {
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/* Unfortunately haveto return error this way*/
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ERR("421 Service timed out");
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} else {
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ERR("421 Service not available, remote server has closed connection");
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}
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code = 421;
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return(4);
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}
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if (c != '\r' && proxflag)
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TRACE(1,"%s:%c",hostname,c);
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if (dig < 4 && isdigit(c))
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code = code * 10 + (c - '0');
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if (!pflag && code == 227)
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pflag = 1;
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if (dig > 4 && pflag == 1 && isdigit(c))
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pflag = 2;
|
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if (pflag == 2) {
|
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if (c != '\r' && c != ')')
|
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*pt++ = c;
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else {
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*pt = '\0';
|
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pflag = 3;
|
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}
|
|
}
|
|
if (dig == 4 && c == '-') {
|
|
if (continuation)
|
|
code = 0;
|
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continuation++;
|
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}
|
|
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
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|
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);
|
|
}
|