diff -uNr netkit-ftp-0.17/CVS/Entries netkit-ftp/CVS/Entries diff -uNr netkit-ftp-0.17/ChangeLog netkit-ftp/ChangeLog --- netkit-ftp-0.17/ChangeLog Sun Jul 23 04:38:08 2000 +++ netkit-ftp/ChangeLog Tue Nov 28 03:50:10 2000 @@ -1,3 +1,6 @@ +28-Nov-2000: + IPv6 support. (Hiroyuki YAMAMORI ) + 8-Jul-2000: Fix misused printf-function call (not %n-exploitable though). diff -uNr netkit-ftp-0.17/configure netkit-ftp/configure --- netkit-ftp-0.17/configure Sat Jul 29 21:00:28 2000 +++ netkit-ftp/configure Sat Jan 27 06:14:54 2001 @@ -24,6 +24,7 @@ --binmode=mode Mode for binaries [755] --manmode=mode Mode for manual pages [644] --with-c-compiler=cc Program for compiling C source [guessed] + --enable-ipv6 Enable IPv6 support EOF exit 0;; --verbose) ;; @@ -39,6 +40,11 @@ --manmode=*) MANMODE=`echo $1 | sed 's/^[^=]*=//'` ;; --with-c-compiler=*) CC=`echo $1 | sed 's/^[^=]*=//'` ;; --without-readline|--disable-readline) WITHOUT_READLINE=1;; + + --disable-ipv6) ENABLE_IPV6=no;; + --enable-ipv6=*) ENABLE_IPV6=`echo $1 | sed 's/^[^=]*=//'`;; + --enable-ipv6) ENABLE_IPV6=yes;; + *) echo "Unrecognized option: $1"; exit 1;; esac shift @@ -142,6 +148,42 @@ LDFLAGS= LIBS= + +rm -f __conftest* + +################################################## +## Enable IPv6 +echo -n "Whether to enable IPv6 support... " +if [ x"$ENABLE_IPV6" = x"yes" ]; then + echo yes + CFLAGS="$CFLAGS -DINET6" +else + echo no +fi + +rm -f __conftest* + +## Search IPv6 Library / Headers +if [ x"$ENABLE_IPV6" = x"yes" ]; then + echo -n "Search for IPv6 library... " + inet6libdirs="/usr/local/v6/lib /usr/local/lib /usr /usr/inet6/lib" + inet6libs="inet6" + inet6found=no + for inet6libdir in $inet6libdirs; do + for inet6lib in $inet6libs; do + if [ -d $inet6libdir ] && [ -f $inet6libdir/lib$inet6lib.a ]; then + inet6found=yes + break 2 + fi + done + done + if [ x"$inet6found" = x"yes" ]; then + echo "$inet6libdir/lib$inet6lib.a" + LIBS="$LIBS -L$inet6libdir -l$inet6lib" + else + echo "not found" + fi +fi rm -f __conftest* diff -uNr netkit-ftp-0.17/ftp/CVS/Entries netkit-ftp/ftp/CVS/Entries --- netkit-ftp-0.17/ftp/CVS/Entries Thu Jan 1 02:00:00 1970 +++ netkit-ftp/ftp/CVS/Entries Mon Feb 19 06:50:49 2001 @@ -0,0 +1,16 @@ +/.cvsignore/1.1.1.1/Fri Nov 3 19:18:15 2000// +/Makefile/1.4/Sat Jan 27 05:57:08 2001// +/cmds.c/1.3/Fri Jan 12 21:36:27 2001// +/cmds.h/1.1.1.1/Fri Nov 3 19:18:15 2000// +/cmdtab.c/1.1.1.1/Fri Nov 3 19:18:15 2000// +/domacro.c/1.1.1.1/Fri Nov 3 19:18:15 2000// +/ftp.1/1.1.1.1/Fri Nov 3 19:18:15 2000// +/ftp.c/1.11/Sun Feb 11 12:26:59 2001// +/ftp_var.h/1.3/Fri Jan 12 21:36:27 2001// +/glob.c/1.1.1.1/Fri Nov 3 19:18:15 2000// +/glob.h/1.1.1.1/Fri Nov 3 19:18:15 2000// +/main.c/1.1.1.1/Fri Nov 3 19:18:15 2000// +/netrc.5/1.1.1.1/Fri Nov 3 19:18:15 2000// +/pathnames.h/1.1.1.1/Fri Nov 3 19:18:15 2000// +/ruserpass.c/1.1.1.1/Fri Nov 3 19:18:15 2000// +D diff -uNr netkit-ftp-0.17/ftp/CVS/Repository netkit-ftp/ftp/CVS/Repository --- netkit-ftp-0.17/ftp/CVS/Repository Thu Jan 1 02:00:00 1970 +++ netkit-ftp/ftp/CVS/Repository Mon Feb 19 06:50:49 2001 @@ -0,0 +1 @@ +usagi/src/netkit-ftp/ftp diff -uNr netkit-ftp-0.17/ftp/CVS/Root netkit-ftp/ftp/CVS/Root --- netkit-ftp-0.17/ftp/CVS/Root Thu Jan 1 02:00:00 1970 +++ netkit-ftp/ftp/CVS/Root Mon Feb 19 06:50:49 2001 @@ -0,0 +1 @@ +:pserver:anoncvs@anoncvs.linux-ipv6.org:/cvsroot/usagi diff -uNr netkit-ftp-0.17/ftp/Makefile netkit-ftp/ftp/Makefile --- netkit-ftp-0.17/ftp/Makefile Sun Aug 1 09:00:12 1999 +++ netkit-ftp/ftp/Makefile Sat Jan 27 07:57:08 2001 @@ -16,10 +16,13 @@ cmds.o glob.o: glob.h install: ftp + install -d $(INSTALLROOT)$(BINDIR) install -s -m$(BINMODE) ftp $(INSTALLROOT)$(BINDIR) ln -sf ftp $(INSTALLROOT)$(BINDIR)/pftp + install -d $(INSTALLROOT)$(MANDIR)/man1 install -m$(MANMODE) ftp.1 $(INSTALLROOT)$(MANDIR)/man1 ln -sf ftp.1 $(INSTALLROOT)$(MANDIR)/man1/pftp.1 + install -d $(INSTALLROOT)$(MANDIR)/man5 install -m$(MANMODE) netrc.5 $(INSTALLROOT)$(MANDIR)/man5 clean: diff -uNr netkit-ftp-0.17/ftp/cmds.c netkit-ftp/ftp/cmds.c --- netkit-ftp-0.17/ftp/cmds.c Sun Jul 23 04:36:59 2000 +++ netkit-ftp/ftp/cmds.c Fri Jan 12 23:36:27 2001 @@ -1,3 +1,5 @@ +/* $USAGI$ */ + /* * Copyright (c) 1985, 1989 Regents of the University of California. * All rights reserved. @@ -35,7 +37,7 @@ * from: @(#)cmds.c 5.26 (Berkeley) 3/5/91 */ char cmds_rcsid[] = - "$Id: cmds.c,v 1.33 2000/07/23 01:36:59 dholland Exp $"; + "$Id: cmds.c,v 1.3 2001/01/12 21:36:27 sekiya Exp $"; /* * FTP User Program -- Command Routines. @@ -190,7 +192,7 @@ setpeer(int argc, char *argv[]) { char *host; - unsigned short port; + char *port; if (connected) { printf("Already connected to %s, use close first.\n", @@ -205,22 +207,17 @@ code = -1; return; } - port = ftp_port; + port = NULL; if (argc > 2) { - port = atoi(argv[2]); - if (port < 1) { - printf("%s: bad port number-- %s\n", argv[1], argv[2]); - printf ("usage: %s host-name [port]\n", argv[0]); - code = -1; - return; - } - port = htons(port); + port = argv[2]; } host = hookup(argv[1], port); if (host) { int overbose; connected = 1; + try_epsv = 1; + try_eprt = 1; /* * Set up defaults for FTP. */ diff -uNr netkit-ftp-0.17/ftp/cmdtab.c netkit-ftp/ftp/cmdtab.c --- netkit-ftp-0.17/ftp/cmdtab.c Tue Sep 28 18:36:05 1999 +++ netkit-ftp/ftp/cmdtab.c Fri Nov 3 21:18:15 2000 @@ -35,7 +35,7 @@ * from: @(#)cmdtab.c 5.10 (Berkeley) 6/1/90 */ char cmdtab_rcsid[] = - "$Id: cmdtab.c,v 1.8 1999/09/28 15:36:05 dholland Exp $"; + "$Id: cmdtab.c,v 1.1.1.1 2000/11/03 19:18:15 mk Exp $"; #include /* for NULL */ #include "ftp_var.h" diff -uNr netkit-ftp-0.17/ftp/domacro.c netkit-ftp/ftp/domacro.c --- netkit-ftp-0.17/ftp/domacro.c Thu Aug 15 02:27:28 1996 +++ netkit-ftp/ftp/domacro.c Fri Nov 3 21:18:15 2000 @@ -35,7 +35,7 @@ * from: @(#)domacro.c 1.8 (Berkeley) 9/28/90 */ char domacro_rcsid[] = - "$Id: domacro.c,v 1.4 1996/08/14 23:27:28 dholland Exp $"; + "$Id: domacro.c,v 1.1.1.1 2000/11/03 19:18:15 mk Exp $"; #include #include diff -uNr netkit-ftp-0.17/ftp/ftp.1 netkit-ftp/ftp/ftp.1 --- netkit-ftp-0.17/ftp/ftp.1 Mon Jul 31 02:56:59 2000 +++ netkit-ftp/ftp/ftp.1 Fri Nov 3 21:18:15 2000 @@ -30,7 +30,7 @@ .\" SUCH DAMAGE. .\" .\" from: @(#)ftp.1 6.18 (Berkeley) 7/30/91 -.\" $Id: ftp.1,v 1.14 2000/07/30 23:56:59 dholland Exp $ +.\" $Id: ftp.1,v 1.1.1.1 2000/11/03 19:18:15 mk Exp $ .\" .Dd August 15, 1999 .Dt FTP 1 diff -uNr netkit-ftp-0.17/ftp/ftp.c netkit-ftp/ftp/ftp.c --- netkit-ftp-0.17/ftp/ftp.c Mon Dec 13 22:33:20 1999 +++ netkit-ftp/ftp/ftp.c Sun Feb 11 14:26:59 2001 @@ -1,3 +1,34 @@ +/* $USAGI$ */ + +/* + * Copyright (C) 1997 and 1998 WIDE Project. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + /* * Copyright (c) 1985, 1989 Regents of the University of California. * All rights reserved. @@ -35,7 +66,7 @@ * From: @(#)ftp.c 5.38 (Berkeley) 4/22/91 */ char ftp_rcsid[] = - "$Id: ftp.c,v 1.25 1999/12/13 20:33:20 dholland Exp $"; + "$Id: ftp.c,v 1.11 2001/02/11 12:26:59 yoshfuji Exp $"; #include #include @@ -63,14 +94,38 @@ #include "ftp_var.h" #include "cmds.h" +#ifdef _USAGI +#include "version.h" +#else #include "../version.h" +#endif + +union sockunion { + struct sockinet { + u_short si_family; + u_short si_port; + } su_si; + struct sockaddr su_sa; + struct sockaddr_in su_sin; +#ifdef INET6 + struct sockaddr_in6 su_sin6; +#endif +}; +#define su_family su_sa.sa_family +#define su_port su_si.si_port + +#ifdef INET6 +#define ex_af2prot(a) (a == AF_INET ? 1 : (a == AF_INET6 ? 2 : 0)) +#else +#define ex_af2prot(a) (a == AF_INET ? 1 : 0) +#endif int data = -1; off_t restart_point = 0; -static struct sockaddr_in hisctladdr; -static struct sockaddr_in data_addr; -static struct sockaddr_in myctladdr; +static union sockunion hisctladdr; +static union sockunion data_addr; +static union sockunion myctladdr; static int ptflag = 0; static sigjmp_buf recvabort; static sigjmp_buf sendabort; @@ -96,79 +151,119 @@ static FILE *dataconn(const char *); char * -hookup(char *host, int port) +hookup(const char *host, const char *port) { - register struct hostent *hp = 0; - int s, tos; + int s, tos, error; socklen_t len; static char hostnamebuf[256]; - + struct addrinfo hints, *res, *res0; + char hbuf[MAXHOSTNAMELEN], pbuf[NI_MAXSERV]; + char *cause = "ftp: unknown"; + + if (port) { + strncpy(pbuf, port, sizeof(pbuf) - 1); + pbuf[sizeof(pbuf) - 1] = '\0'; + } else { + sprintf(pbuf, "%d", ntohs(ftp_port)); + } memset(&hisctladdr, 0, sizeof(hisctladdr)); - if (inet_aton(host, &hisctladdr.sin_addr)) { - hisctladdr.sin_family = AF_INET; - strncpy(hostnamebuf, host, sizeof(hostnamebuf)); - hostnamebuf[sizeof(hostnamebuf)-1]=0; - } - else { - hp = gethostbyname(host); - if (hp == NULL) { - fprintf(stderr, "ftp: %s: ", host); - herror((char *)NULL); - code = -1; - return((char *) 0); + memset(&hints, 0, sizeof(hints)); + hints.ai_flags = AI_CANONNAME; + hints.ai_socktype = SOCK_STREAM; + error = getaddrinfo(host, pbuf, &hints, &res0); + if (error) { + if (port) { + strcpy(hbuf, " "); + } else { + hbuf[0] = '\0'; + pbuf[0] = '\0'; } - hisctladdr.sin_family = hp->h_addrtype; - if (hp->h_length > (int)sizeof(hisctladdr.sin_addr)) { - hp->h_length = sizeof(hisctladdr.sin_addr); - } - memcpy(&hisctladdr.sin_addr, hp->h_addr_list[0], hp->h_length); - (void) strncpy(hostnamebuf, hp->h_name, sizeof(hostnamebuf)); - hostnamebuf[sizeof(hostnamebuf)-1] = 0; - } - hostname = hostnamebuf; - s = socket(hisctladdr.sin_family, SOCK_STREAM, 0); - if (s < 0) { - perror("ftp: socket"); + fprintf(stderr, "ftp: %s%s%s: %s\n", host, hbuf, pbuf, + gai_strerror(error)); code = -1; return (0); } - hisctladdr.sin_port = port; - while (connect(s, (struct sockaddr *)&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++; - memcpy(&hisctladdr.sin_addr, hp->h_addr_list[0], - 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); + + if (res0->ai_canonname) { + struct addrinfo h, *a; + memset(&h, 0, sizeof(h)); + h.ai_family = PF_UNSPEC; + h.ai_socktype = SOCK_STREAM; + h.ai_flags = AI_NUMERICHOST; + if (!getaddrinfo(res0->ai_canonname, NULL, &h, &a)) { + strncpy(hostnamebuf, res0->ai_canonname, sizeof(hostnamebuf)); + freeaddrinfo(a); + } else + strncpy(hostnamebuf, host, sizeof(hostnamebuf)); + } + else + strncpy(hostnamebuf, host, sizeof(hostnamebuf)); + hostnamebuf[sizeof(hostnamebuf) - 1] = '\0'; + hostname = hostnamebuf; + + s = -1; + for (res = res0; res; res = res->ai_next) { + if (!ex_af2prot(res->ai_family)) { + cause = "ftp: mismatch address family"; + errno = EPROTONOSUPPORT; + continue; + } + if ((size_t)res->ai_addrlen > sizeof(hisctladdr)) { + cause = "ftp: mismatch struct sockaddr size"; + errno = EPROTO; + continue; + } + if (getnameinfo(res->ai_addr, res->ai_addrlen, + hbuf, sizeof(hbuf), NULL, 0, + NI_NUMERICHOST)) + strcpy(hbuf, "???"); + if (res0->ai_next) /* if we have multiple possibilities */ + fprintf(stdout, "Trying %s...\n", hbuf); + s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); + if (s < 0) { + cause = "ftp: socket"; + continue; + } + while ((error = connect(s, res->ai_addr, res->ai_addrlen)) < 0 + && errno == EINTR) { + ; + } + if (error) { + /* this "if" clause is to prevent print warning twice */ + if (res->ai_next) { + fprintf(stderr, + "ftp: connect to address %s", hbuf); + perror(""); } + cause = "ftp: connect"; + close(s); + s = -1; continue; } - perror("ftp: connect"); + /* finally we got one */ + break; + } + if (s < 0) { + perror(cause); code = -1; - goto bad; + freeaddrinfo(res0); + return NULL; } - len = sizeof (myctladdr); + len = res->ai_addrlen; + memcpy(&hisctladdr, res->ai_addr, len); + freeaddrinfo(res0); if (getsockname(s, (struct sockaddr *)&myctladdr, &len) < 0) { perror("ftp: getsockname"); code = -1; goto bad; } #ifdef IP_TOS + if (hisctladdr.su_family == AF_INET) + { tos = IPTOS_LOWDELAY; if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0) perror("ftp: setsockopt TOS (ignored)"); + } #endif cin = fdopen(s, "r"); cout = fdopen(s, "w"); @@ -182,7 +277,7 @@ goto bad; } if (verbose) - printf("Connected to %s.\n", hostname); + printf("Connected to %s (%s).\n", hostname, hbuf); if (getreply(0) > 2) { /* read startup message from server */ if (cin) (void) fclose(cin); @@ -392,8 +487,10 @@ } if (dig < 4 && isdigit(c)) code = code * 10 + (c - '0'); - if (!pflag && code == 227) + if (!pflag && (code == 227 || code == 228)) pflag = 1; + else if (!pflag && code == 229) + pflag = 100; if (dig > 4 && pflag == 1 && isdigit(c)) pflag = 2; if (pflag == 2) { @@ -405,6 +502,8 @@ pflag = 3; } } + if (pflag == 100 && c == '(') + pflag = 2; if (dig == 4 && c == '-') { if (continuation) code = 0; @@ -1083,15 +1182,25 @@ static int initconn(void) { - register char *p, *a; + u_char *p, *a; int result, tmpno = 0; socklen_t len; int on = 1; - int tos; - u_long a1,a2,a3,a4,p1,p2; - + int tos, error = 0; + u_int ad[16], po[2], af, alen, plen; + char *pasvcmd = NULL; + char hbuf[MAXHOSTNAMELEN], pbuf[NI_MAXSERV]; + +#ifdef INET6 + if (myctladdr.su_family == AF_INET6 + && (IN6_IS_ADDR_LINKLOCAL(&myctladdr.su_sin6.sin6_addr) + || IN6_IS_ADDR_SITELOCAL(&myctladdr.su_sin6.sin6_addr))) { + fprintf(stderr, "use of scoped address can be troublesome\n"); + } +#endif if (passivemode) { - data = socket(AF_INET, SOCK_STREAM, 0); + data_addr = hisctladdr; + data = socket(data_addr.su_family, SOCK_STREAM, 0); if (data < 0) { perror("ftp: socket"); return(1); @@ -1100,52 +1209,203 @@ setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on, sizeof (on)) < 0) perror("ftp: setsockopt (ignored)"); - if (command("PASV") != COMPLETE) { + switch (data_addr.su_family) { + case AF_INET: +#if 0 + if (try_epsv) { + result = command(pasvcmd = "EPSV 1"); + if (code / 10 == 22 && code != 229) { + fprintf(stderr, + "wrong server: return code must be 229\n"); + result = COMPLETE + 1; + } + } else { +#endif + result = COMPLETE + 1; + + if (result != COMPLETE) { + try_epsv = 0; + result = command(pasvcmd = "PASV"); + } + break; +#ifdef INET6 + case AF_INET6: + if (try_epsv) { + result = command(pasvcmd = "EPSV 2"); + if (code / 10 == 22 && code != 229) { + fprintf(stderr, + "wrong server: return code must be 229\n"); + result = COMPLETE + 1; + } + } else { + result = COMPLETE + 1; + } + if (result != COMPLETE) { + try_epsv = 0; + result = command(pasvcmd = "LPSV"); + } + break; +#endif + default: + result = COMPLETE + 1; + break; + } + if (result != COMPLETE) { printf("Passive mode refused.\n"); - return(1); + goto bad; } +#define pack2(var) \ + (((var[0] & 0xff) << 8) | ((var[1] & 0xff) << 0)) +#define pack4(var) \ + ((((var)[0] & 0xff) << 24) | (((var)[1] & 0xff) << 16) | \ + (((var)[2] & 0xff) << 8) | (((var)[3] & 0xff) << 0)) + /* * What we've got at this point is a string of comma separated * one-byte unsigned integer values, separated by commas. - * The first four are the an IP address. The fifth is the MSB - * of the port number, the sixth is the LSB. From that we'll - * prepare a sockaddr_in. */ - - if (sscanf(pasv,"%ld,%ld,%ld,%ld,%ld,%ld", - &a1,&a2,&a3,&a4,&p1,&p2) - != 6) - { - printf("Passive mode address scan failure. Shouldn't happen!\n"); - return(1); + error = 0; + if (strcmp(pasvcmd, "PASV") == 0) { + if (data_addr.su_family != AF_INET) { + error = 2; + goto psv_done; + } + if (code / 10 == 22 && code != 227) { + error = 227; + goto psv_done; + } + if (sscanf(pasv, "%u,%u,%u,%u,%u,%u", + &ad[0], &ad[1], &ad[2], &ad[3], + &po[0], &po[1]) != 6) { + error = 1; + goto psv_done; + } + data_addr.su_sin.sin_addr.s_addr = htonl(pack4(ad)); + data_addr.su_port = htons(pack2(po)); + } else + if (strcmp(pasvcmd, "LPSV") == 0) { + if (code / 10 == 22 && code != 228) { + error = 228; + goto psv_done; + } + switch (data_addr.su_family) { + case AF_INET: + if (sscanf(pasv, "%u,%u,%u,%u,%u,%u,%u,%u,%u", + &af, &alen, + &ad[0], &ad[1], &ad[2], &ad[3], + &plen, &po[0], &po[1]) != 9) { + error = 1; + goto psv_done; + } + if (af != 4 || alen != 4 || plen != 2) { + error = 2; + goto psv_done; + } + data_addr.su_sin.sin_addr.s_addr = + htonl(pack4(ad)); + data_addr.su_port = htons(pack2(po)); + break; +#ifdef INET6 + case AF_INET6: + if (sscanf(pasv, + "%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u", + &af, &alen, + &ad[0], &ad[1], &ad[2], &ad[3], + &ad[4], &ad[5], &ad[6], &ad[7], + &ad[8], &ad[9], &ad[10], &ad[11], + &ad[12], &ad[13], &ad[14], &ad[15], + &plen, &po[0], &po[1]) != 21) { + error = 1; + goto psv_done; + } + if (af != 6 || alen != 16 || plen != 2) { + error = 2; + goto psv_done; + } + data_addr.su_sin6.sin6_addr.s6_addr32[0] = + htonl(pack4(ad)); + data_addr.su_sin6.sin6_addr.s6_addr32[1] = + htonl(pack4(ad+4)); + data_addr.su_sin6.sin6_addr.s6_addr32[2] = + htonl(pack4(ad+8)); + data_addr.su_sin6.sin6_addr.s6_addr32[3] = + htonl(pack4(ad+12)); + data_addr.su_port = htons(pack2(po)); + break; +#endif + default: + error = 1; + } + } else if (strncmp(pasvcmd, "EPSV", 4) == 0) { + char delim[4]; + u_int epsvpo; + + if (code / 10 == 22 && code != 229) { + error = 229; + goto psv_done; + } + if (sscanf(pasv, "%c%c%c%u%c", &delim[0], &delim[1], + &delim[2], &epsvpo, &delim[3]) != 5) { + error = 1; + goto psv_done; + } + if (delim[0] != delim[1] || delim[0] != delim[2] + || delim[0] != delim[3]) { + error = 1; + goto psv_done; + } + data_addr.su_port = htons(epsvpo); + } else { + error = 1; + } +psv_done: + switch (error) { + case 0: + break; + case 1: + fprintf(stderr, + "Passive mode address scan failure. Shouldn't happen!\n"); + goto bad; + case 2: + fprintf(stderr, + "Passive mode AF mismatch. Shouldn't happen!\n"); + goto bad; + case 227: + case 228: + case 229: + fprintf(stderr, + "wrong server: return code must be %d\n", error); + goto bad; + default: + fprintf(stderr, "Bug\n"); } - data_addr.sin_family = AF_INET; - data_addr.sin_addr.s_addr = htonl((a1 << 24) | (a2 << 16) | - (a3 << 8) | a4); - data_addr.sin_port = htons((p1 << 8) | p2); - if (connect(data, (struct sockaddr *) &data_addr, - sizeof(data_addr))<0) { + (data_addr.su_family == AF_INET ? + sizeof(data_addr.su_sin) : + sizeof(data_addr.su_sin6)))<0) { perror("ftp: connect"); return(1); } #ifdef IP_TOS + if (data_addr.su_family == AF_INET) + { tos = IPTOS_THROUGHPUT; if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(tos)) < 0) perror("ftp: setsockopt TOS (ignored)"); + } #endif return(0); } noport: data_addr = myctladdr; if (sendport) - data_addr.sin_port = 0; /* let system pick one */ + data_addr.su_port = 0; /* let system pick one */ if (data != -1) (void) close(data); - data = socket(AF_INET, SOCK_STREAM, 0); + data = socket(data_addr.su_family, SOCK_STREAM, 0); if (data < 0) { perror("ftp: socket"); if (tmpno) @@ -1172,13 +1432,47 @@ 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])); + af = ex_af2prot(data_addr.su_family); + if (try_eprt && af > 1) { /* only IPv6 */ + if (getnameinfo((struct sockaddr *)&data_addr, len, + hbuf, sizeof(hbuf), pbuf, sizeof(pbuf), + NI_NUMERICHOST | NI_NUMERICSERV) == 0) { + result = command("EPRT |%d|%s|%s|", + af, hbuf, pbuf); + if (result != COMPLETE) { + try_eprt = 0; + } + } else { + result = ERROR; + } + } else { + result = COMPLETE + 1; + } + if (result == COMPLETE) + goto prt_done; + + p = (u_char *)&data_addr.su_port; + switch (data_addr.su_family) { + case AF_INET: + a = (u_char *)&data_addr.su_sin.sin_addr; + result = command("PORT %u,%u,%u,%u,%u,%u", + a[0], a[1], a[2], a[3], p[0], p[1]); + break; +#ifdef INET6 + case AF_INET6: + a = (u_char *)&data_addr.su_sin6.sin6_addr; + result = command( + "LPRT 6,16,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,2,%d,%d", + a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], + a[8], a[9],a[10],a[11],a[12],a[13],a[14],a[15], + p[0], p[1]); + break; +#endif + default: + result = COMPLETE + 1; /* xxx */ + } + + prt_done: if (result == ERROR && sendport == -1) { sendport = 0; tmpno = 1; @@ -1189,9 +1483,12 @@ if (tmpno) sendport = 1; #ifdef IP_TOS + if (data_addr.su_family == AF_INET) + { on = IPTOS_THROUGHPUT; if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on, sizeof(int)) < 0) perror("ftp: setsockopt TOS (ignored)"); + } #endif return (0); bad: @@ -1204,7 +1501,7 @@ static FILE * dataconn(const char *lmode) { - struct sockaddr_in from; + union sockunion from; int s, tos; socklen_t fromlen = sizeof(from); @@ -1220,9 +1517,12 @@ (void) close(data); data = s; #ifdef IP_TOS + if (from.su_family == AF_INET) + { tos = IPTOS_THROUGHPUT; if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos, sizeof(int)) < 0) perror("ftp: setsockopt TOS (ignored)"); + } #endif return (fdopen(data, lmode)); } @@ -1284,8 +1584,8 @@ static struct comvars { int connect; char name[MAXHOSTNAMELEN]; - struct sockaddr_in mctl; - struct sockaddr_in hctl; + union sockunion mctl; + union sockunion hctl; FILE *in; FILE *out; int tpe; @@ -1323,7 +1623,7 @@ connected = op->connect; if (hostname) { (void) strncpy(ip->name, hostname, sizeof(ip->name) - 1); - ip->name[strlen(ip->name)] = '\0'; + ip->name[sizeof(ip->name) - 1] = '\0'; } else { ip->name[0] = 0; @@ -1352,18 +1652,18 @@ ip->ntflg = ntflag; ntflag = op->ntflg; (void) strncpy(ip->nti, ntin, 16); - (ip->nti)[strlen(ip->nti)] = '\0'; + (ip->nti)[16] = '\0'; /* shouldn't use strlen */ (void) strcpy(ntin, op->nti); (void) strncpy(ip->nto, ntout, 16); - (ip->nto)[strlen(ip->nto)] = '\0'; + (ip->nto)[16] = '\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'; + (ip->mi)[MAXPATHLEN - 1] = '\0'; (void) strcpy(mapin, op->mi); (void) strncpy(ip->mo, mapout, MAXPATHLEN - 1); - (ip->mo)[strlen(ip->mo)] = '\0'; + (ip->mo)[MAXPATHLEN - 1] = '\0'; (void) strcpy(mapout, op->mo); (void) signal(SIGINT, oldintr); if (abrtflag) { diff -uNr netkit-ftp-0.17/ftp/ftp_var.h netkit-ftp/ftp/ftp_var.h --- netkit-ftp-0.17/ftp/ftp_var.h Sat Oct 2 21:39:17 1999 +++ netkit-ftp/ftp/ftp_var.h Fri Jan 12 23:36:27 2001 @@ -1,3 +1,5 @@ +/* $USAGI$ */ + /* * Copyright (c) 1985, 1989 Regents of the University of California. * All rights reserved. @@ -31,7 +33,7 @@ * SUCH DAMAGE. * * from: @(#)ftp_var.h 5.9 (Berkeley) 6/1/90 - * $Id: ftp_var.h,v 1.12 1999/10/02 18:39:17 dholland Exp $ + * $Id: ftp_var.h,v 1.3 2001/01/12 21:36:27 sekiya Exp $ */ /* @@ -112,6 +114,8 @@ Extern int mflag; /* flag: if != 0, then active multi command */ Extern int options; /* used during socket creation */ +Extern int try_epsv; /* try EPSV for this session */ +Extern int try_eprt; /* try EPRT for this session */ /* * Format of command table. @@ -140,7 +144,7 @@ Extern char macbuf[4096]; #define MACBUF_SIZE 4096 -char *hookup(char *host, int port); +char *hookup(const char *host, const char *port); struct cmd *getcmd(const char *); char **makeargv(int *pargc, char **parg); int dologin(const char *host);