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authorGavin Atkinson <gavin@FreeBSD.org>2011-06-19 16:54:06 +0000
committerGavin Atkinson <gavin@FreeBSD.org>2011-06-19 16:54:06 +0000
commit04a7382c466e38a190fbd87cd29d712445a23c00 (patch)
treed536f826304d5d1048670212a5e33e4818109b14 /contrib/lukemftp/src/ftp.c
parentf367c1fb527185881321f1f4745a0e06337e0ff9 (diff)
downloadsrc-04a7382c466e38a190fbd87cd29d712445a23c00.tar.gz
src-04a7382c466e38a190fbd87cd29d712445a23c00.zip
Bootstrap lukemftp vendor areavendor/NetBSD/lukemftp
Notes
Notes: svn path=/vendor/lukemftp/dist/; revision=223300
Diffstat (limited to 'contrib/lukemftp/src/ftp.c')
-rw-r--r--contrib/lukemftp/src/ftp.c2171
1 files changed, 0 insertions, 2171 deletions
diff --git a/contrib/lukemftp/src/ftp.c b/contrib/lukemftp/src/ftp.c
deleted file mode 100644
index dae61313fd87..000000000000
--- a/contrib/lukemftp/src/ftp.c
+++ /dev/null
@@ -1,2171 +0,0 @@
-/* $NetBSD: ftp.c,v 1.132 2005/05/14 15:26:43 lukem Exp $ */
-
-/*-
- * Copyright (c) 1996-2005 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Luke Mewburn.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the NetBSD
- * Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * 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.
- */
-
-#include <sys/cdefs.h>
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)ftp.c 8.6 (Berkeley) 10/27/94";
-#else
-__RCSID("$NetBSD: ftp.c,v 1.132 2005/05/14 15:26:43 lukem Exp $");
-#endif
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <arpa/inet.h>
-#include <arpa/ftp.h>
-#include <arpa/telnet.h>
-
-#include <ctype.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <stdarg.h>
-
-#include "ftp_var.h"
-
-volatile sig_atomic_t abrtflag;
-volatile sig_atomic_t timeoutflag;
-
-sigjmp_buf ptabort;
-int ptabflg;
-int ptflag = 0;
-char pasv[BUFSIZ]; /* passive port for proxy data connection */
-
-static int empty(FILE *, FILE *, int);
-
-struct sockinet {
- union sockunion {
- struct sockaddr_in su_sin;
-#ifdef INET6
- struct sockaddr_in6 su_sin6;
-#endif
- } si_su;
-#if !HAVE_SOCKADDR_SA_LEN
- int si_len;
-#endif
-};
-
-#if !HAVE_SOCKADDR_SA_LEN
-# define su_len si_len
-#else
-# define su_len si_su.su_sin.sin_len
-#endif
-#define su_family si_su.su_sin.sin_family
-#define su_port si_su.su_sin.sin_port
-
-struct sockinet myctladdr, hisctladdr, data_addr;
-
-char *
-hookup(char *host, char *port)
-{
- int s = -1, error, portnum;
- struct addrinfo hints, *res, *res0;
- char hbuf[MAXHOSTNAMELEN];
- static char hostnamebuf[MAXHOSTNAMELEN];
- char *cause = "unknown";
- socklen_t len;
- int on = 1;
-
- memset((char *)&hisctladdr, 0, sizeof (hisctladdr));
- memset((char *)&myctladdr, 0, sizeof (myctladdr));
- memset(&hints, 0, sizeof(hints));
- portnum = parseport(port, FTP_PORT);
- hints.ai_flags = AI_CANONNAME;
- hints.ai_family = family;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_protocol = 0;
- error = getaddrinfo(host, NULL, &hints, &res0);
- if (error) {
- warnx("%s", gai_strerror(error));
- code = -1;
- return (0);
- }
-
- if (res0->ai_canonname)
- (void)strlcpy(hostnamebuf, res0->ai_canonname,
- sizeof(hostnamebuf));
- else
- (void)strlcpy(hostnamebuf, host, sizeof(hostnamebuf));
- hostname = hostnamebuf;
-
- for (res = res0; res; res = res->ai_next) {
- /*
- * make sure that ai_addr is NOT an IPv4 mapped address.
- * IPv4 mapped address complicates too many things in FTP
- * protocol handling, as FTP protocol is defined differently
- * between IPv4 and IPv6.
- *
- * This may not be the best way to handle this situation,
- * since the semantics of IPv4 mapped address is defined in
- * the kernel. There are configurations where we should use
- * IPv4 mapped address as native IPv6 address, not as
- * "an IPv6 address that embeds IPv4 address" (namely, SIIT).
- *
- * More complete solution would be to have an additional
- * getsockopt to grab "real" peername/sockname. "real"
- * peername/sockname will be AF_INET if IPv4 mapped address
- * is used to embed IPv4 address, and will be AF_INET6 if
- * we use it as native. What a mess!
- */
- ai_unmapped(res);
-#if 0 /*old behavior*/
- if (res != res0) /* not on the first address */
-#else
- if (res0->ai_next) /* if we have multiple possibilities */
-#endif
- {
- if (getnameinfo(res->ai_addr, res->ai_addrlen,
- hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST))
- strlcpy(hbuf, "?", sizeof(hbuf));
- fprintf(ttyout, "Trying %s...\n", hbuf);
- }
- ((struct sockaddr_in *)res->ai_addr)->sin_port = htons(portnum);
- s = socket(res->ai_family, SOCK_STREAM, res->ai_protocol);
- if (s < 0) {
- cause = "socket";
- continue;
- }
- error = xconnect(s, res->ai_addr, res->ai_addrlen);
- if (error) {
- /* this "if" clause is to prevent print warning twice */
- if (res->ai_next) {
- if (getnameinfo(res->ai_addr, res->ai_addrlen,
- hbuf, sizeof(hbuf), NULL, 0,
- NI_NUMERICHOST))
- strlcpy(hbuf, "?", sizeof(hbuf));
- warn("connect to address %s", hbuf);
- }
- cause = "connect";
- close(s);
- s = -1;
- continue;
- }
-
- /* finally we got one */
- break;
- }
- if (s < 0) {
- warn("%s", cause);
- code = -1;
- freeaddrinfo(res0);
- return 0;
- }
- memcpy(&hisctladdr.si_su, res->ai_addr, res->ai_addrlen);
- hisctladdr.su_len = res->ai_addrlen;
- freeaddrinfo(res0);
- res0 = res = NULL;
-
- len = hisctladdr.su_len;
- if (getsockname(s, (struct sockaddr *)&myctladdr.si_su, &len) == -1) {
- warn("getsockname");
- code = -1;
- goto bad;
- }
- myctladdr.su_len = len;
-
-#ifdef IPTOS_LOWDELAY
- if (hisctladdr.su_family == AF_INET) {
- int tos = IPTOS_LOWDELAY;
- if (setsockopt(s, IPPROTO_IP, IP_TOS,
- (void *)&tos, sizeof(tos)) == -1) {
- if (debug)
- warn("setsockopt %s (ignored)",
- "IPTOS_LOWDELAY");
- }
- }
-#endif
- cin = fdopen(s, "r");
- cout = fdopen(s, "w");
- if (cin == NULL || cout == NULL) {
- warnx("fdopen failed.");
- if (cin)
- (void)fclose(cin);
- if (cout)
- (void)fclose(cout);
- code = -1;
- goto bad;
- }
- if (verbose)
- fprintf(ttyout, "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;
- }
-
- if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE,
- (void *)&on, sizeof(on)) == -1) {
- if (debug)
- warn("setsockopt %s (ignored)", "SO_OOBINLINE");
- }
-
- return (hostname);
- bad:
- (void)close(s);
- return (NULL);
-}
-
-void
-cmdabort(int notused)
-{
- int oerrno = errno;
-
- sigint_raised = 1;
- alarmtimer(0);
- if (fromatty)
- write(fileno(ttyout), "\n", 1);
- abrtflag++;
- if (ptflag)
- siglongjmp(ptabort, 1);
- errno = oerrno;
-}
-
-void
-cmdtimeout(int notused)
-{
- int oerrno = errno;
-
- alarmtimer(0);
- if (fromatty)
- write(fileno(ttyout), "\n", 1);
- timeoutflag++;
- if (ptflag)
- siglongjmp(ptabort, 1);
- errno = oerrno;
-}
-
-/*VARARGS*/
-int
-command(const char *fmt, ...)
-{
- va_list ap;
- int r;
- sigfunc oldsigint;
-
- if (debug) {
- fputs("---> ", ttyout);
- va_start(ap, fmt);
- if (strncmp("PASS ", fmt, 5) == 0)
- fputs("PASS XXXX", ttyout);
- else if (strncmp("ACCT ", fmt, 5) == 0)
- fputs("ACCT XXXX", ttyout);
- else
- vfprintf(ttyout, fmt, ap);
- va_end(ap);
- putc('\n', ttyout);
- }
- if (cout == NULL) {
- warnx("No control connection for command.");
- code = -1;
- return (0);
- }
-
- abrtflag = 0;
-
- oldsigint = xsignal(SIGINT, cmdabort);
-
- va_start(ap, fmt);
- vfprintf(cout, fmt, ap);
- va_end(ap);
- fputs("\r\n", cout);
- (void)fflush(cout);
- cpend = 1;
- r = getreply(!strcmp(fmt, "QUIT"));
- if (abrtflag && oldsigint != SIG_IGN)
- (*oldsigint)(SIGINT);
- (void)xsignal(SIGINT, oldsigint);
- return (r);
-}
-
-int
-getreply(int expecteof)
-{
- char current_line[BUFSIZ]; /* last line of previous reply */
- int c, n, line;
- int dig;
- int originalcode = 0, continuation = 0;
- sigfunc oldsigint, oldsigalrm;
- int pflag = 0;
- char *cp, *pt = pasv;
-
- abrtflag = 0;
- timeoutflag = 0;
-
- oldsigint = xsignal(SIGINT, cmdabort);
- oldsigalrm = xsignal(SIGALRM, cmdtimeout);
-
- for (line = 0 ;; line++) {
- dig = n = code = 0;
- cp = current_line;
- while (alarmtimer(60),((c = getc(cin)) != '\n')) {
- if (c == IAC) { /* handle telnet commands */
- switch (c = getc(cin)) {
- case WILL:
- case WONT:
- c = getc(cin);
- fprintf(cout, "%c%c%c", IAC, DONT, c);
- (void)fflush(cout);
- break;
- case DO:
- case DONT:
- c = getc(cin);
- fprintf(cout, "%c%c%c", IAC, WONT, c);
- (void)fflush(cout);
- break;
- default:
- break;
- }
- continue;
- }
- dig++;
- if (c == EOF) {
- /*
- * these will get trashed by pswitch()
- * in lostpeer()
- */
- int reply_timeoutflag = timeoutflag;
- int reply_abrtflag = abrtflag;
-
- alarmtimer(0);
- if (expecteof && feof(cin)) {
- (void)xsignal(SIGINT, oldsigint);
- (void)xsignal(SIGALRM, oldsigalrm);
- code = 221;
- return (0);
- }
- cpend = 0;
- lostpeer(0);
- if (verbose) {
- if (reply_timeoutflag)
- fputs(
- "421 Service not available, remote server timed out. Connection closed\n",
- ttyout);
- else if (reply_abrtflag)
- fputs(
- "421 Service not available, user interrupt. Connection closed.\n",
- ttyout);
- else
- fputs(
- "421 Service not available, remote server has closed connection.\n",
- ttyout);
- (void)fflush(ttyout);
- }
- code = 421;
- (void)xsignal(SIGINT, oldsigint);
- (void)xsignal(SIGALRM, oldsigalrm);
- return (4);
- }
- if (c != '\r' && (verbose > 0 ||
- ((verbose > -1 && n == '5' && dig > 4) &&
- (((!n && c < '5') || (n && n < '5'))
- || !retry_connect)))) {
- if (proxflag &&
- (dig == 1 || (dig == 5 && verbose == 0)))
- fprintf(ttyout, "%s:", hostname);
- (void)putc(c, ttyout);
- }
- if (dig < 4 && isdigit(c))
- code = code * 10 + (c - '0');
- if (!pflag && (code == 227 || code == 228))
- pflag = 1;
- else if (!pflag && code == 229)
- pflag = 100;
- if (dig > 4 && pflag == 1 && isdigit(c))
- pflag = 2;
- if (pflag == 2) {
- if (c != '\r' && c != ')') {
- if (pt < &pasv[sizeof(pasv) - 1])
- *pt++ = c;
- } else {
- *pt = '\0';
- pflag = 3;
- }
- }
- if (pflag == 100 && c == '(')
- pflag = 2;
- if (dig == 4 && c == '-') {
- if (continuation)
- code = 0;
- continuation++;
- }
- if (n == 0)
- n = c;
- if (cp < &current_line[sizeof(current_line) - 1])
- *cp++ = c;
- }
- if (verbose > 0 || ((verbose > -1 && n == '5') &&
- (n < '5' || !retry_connect))) {
- (void)putc(c, ttyout);
- (void)fflush (ttyout);
- }
- if (cp[-1] == '\r')
- cp[-1] = '\0';
- *cp = '\0';
- if (line == 0)
- (void)strlcpy(reply_string, current_line,
- sizeof(reply_string));
- if (line > 0 && code == 0 && reply_callback != NULL)
- (*reply_callback)(current_line);
- if (continuation && code != originalcode) {
- if (originalcode == 0)
- originalcode = code;
- continue;
- }
- if (n != '1')
- cpend = 0;
- alarmtimer(0);
- (void)xsignal(SIGINT, oldsigint);
- (void)xsignal(SIGALRM, oldsigalrm);
- if (code == 421 || originalcode == 421)
- lostpeer(0);
- if (abrtflag && oldsigint != cmdabort && oldsigint != SIG_IGN)
- (*oldsigint)(SIGINT);
- if (timeoutflag && oldsigalrm != cmdtimeout &&
- oldsigalrm != SIG_IGN)
- (*oldsigalrm)(SIGINT);
- return (n - '0');
- }
-}
-
-static int
-empty(FILE *cin, FILE *din, int sec)
-{
- int nr, nfd;
- struct pollfd pfd[2];
-
- nfd = 0;
- if (cin) {
- pfd[nfd].fd = fileno(cin);
- pfd[nfd++].events = POLLIN;
- }
-
- if (din) {
- pfd[nfd].fd = fileno(din);
- pfd[nfd++].events = POLLIN;
- }
-
- if ((nr = xpoll(pfd, nfd, sec * 1000)) <= 0)
- return nr;
-
- nr = 0;
- nfd = 0;
- if (cin)
- nr |= (pfd[nfd++].revents & POLLIN) ? 1 : 0;
- if (din)
- nr |= (pfd[nfd++].revents & POLLIN) ? 2 : 0;
- return nr;
-}
-
-sigjmp_buf xferabort;
-
-void
-abortxfer(int notused)
-{
- char msgbuf[100];
- size_t len;
-
- sigint_raised = 1;
- alarmtimer(0);
- mflag = 0;
- abrtflag = 0;
- switch (direction[0]) {
- case 'r':
- strlcpy(msgbuf, "\nreceive", sizeof(msgbuf));
- break;
- case 's':
- strlcpy(msgbuf, "\nsend", sizeof(msgbuf));
- break;
- default:
- errx(1, "abortxfer called with unknown direction `%s'",
- direction);
- }
- len = strlcat(msgbuf, " aborted. Waiting for remote to finish abort.\n",
- sizeof(msgbuf));
- write(fileno(ttyout), msgbuf, len);
- siglongjmp(xferabort, 1);
-}
-
-void
-sendrequest(const char *cmd, const char *local, const char *remote,
- int printnames)
-{
- struct stat st;
- int c, d;
- FILE *fin, *dout;
- int (*closefunc)(FILE *);
- sigfunc oldintr, oldintp;
- volatile off_t hashbytes;
- char *lmode, *bufp;
- static size_t bufsize;
- static char *buf;
- int oprogress;
-
-#ifdef __GNUC__ /* to shut up gcc warnings */
- (void)&fin;
- (void)&dout;
- (void)&closefunc;
- (void)&oldintr;
- (void)&oldintp;
- (void)&lmode;
-#endif
-
- hashbytes = mark;
- direction = "sent";
- dout = NULL;
- bytes = 0;
- filesize = -1;
- oprogress = progress;
- if (verbose && printnames) {
- if (local && *local != '-')
- fprintf(ttyout, "local: %s ", local);
- if (remote)
- fprintf(ttyout, "remote: %s\n", remote);
- }
- if (proxy) {
- proxtrans(cmd, local, remote);
- return;
- }
- if (curtype != type)
- changetype(type, 0);
- closefunc = NULL;
- oldintr = NULL;
- oldintp = NULL;
- lmode = "w";
- if (sigsetjmp(xferabort, 1)) {
- while (cpend)
- (void)getreply(0);
- code = -1;
- goto cleanupsend;
- }
- (void)xsignal(SIGQUIT, psummary);
- oldintr = xsignal(SIGINT, abortxfer);
- if (strcmp(local, "-") == 0) {
- fin = stdin;
- progress = 0;
- } else if (*local == '|') {
- oldintp = xsignal(SIGPIPE, SIG_IGN);
- fin = popen(local + 1, "r");
- if (fin == NULL) {
- warn("%s", local + 1);
- code = -1;
- goto cleanupsend;
- }
- progress = 0;
- closefunc = pclose;
- } else {
- fin = fopen(local, "r");
- if (fin == NULL) {
- warn("local: %s", local);
- code = -1;
- goto cleanupsend;
- }
- closefunc = fclose;
- if (fstat(fileno(fin), &st) < 0 || !S_ISREG(st.st_mode)) {
- fprintf(ttyout, "%s: not a plain file.\n", local);
- code = -1;
- goto cleanupsend;
- }
- filesize = st.st_size;
- }
- if (initconn()) {
- code = -1;
- goto cleanupsend;
- }
- if (sigsetjmp(xferabort, 1))
- goto abort;
-
- if (restart_point &&
- (strcmp(cmd, "STOR") == 0 || strcmp(cmd, "APPE") == 0)) {
- int rc;
-
- rc = -1;
- switch (curtype) {
- case TYPE_A:
- rc = fseeko(fin, restart_point, SEEK_SET);
- break;
- case TYPE_I:
- case TYPE_L:
- rc = lseek(fileno(fin), restart_point, SEEK_SET);
- break;
- }
- if (rc < 0) {
- warn("local: %s", local);
- goto cleanupsend;
- }
- if (command("REST " LLF, (LLT)restart_point) != CONTINUE)
- goto cleanupsend;
- lmode = "r+";
- }
- if (remote) {
- if (command("%s %s", cmd, remote) != PRELIM)
- goto cleanupsend;
- } else {
- if (command("%s", cmd) != PRELIM)
- goto cleanupsend;
- }
- dirchange = 1;
- dout = dataconn(lmode);
- if (dout == NULL)
- goto abort;
-
- if (sndbuf_size > bufsize) {
- if (buf)
- (void)free(buf);
- bufsize = sndbuf_size;
- buf = xmalloc(bufsize);
- }
-
- progressmeter(-1);
- oldintp = xsignal(SIGPIPE, SIG_IGN);
-
- switch (curtype) {
-
- case TYPE_I:
- case TYPE_L:
- if (rate_put) { /* rate limited */
- while (1) {
- struct timeval then, now, td;
- off_t bufrem;
-
- (void)gettimeofday(&then, NULL);
- errno = c = d = 0;
- bufrem = rate_put;
- while (bufrem > 0) {
- if ((c = read(fileno(fin), buf,
- MIN(bufsize, bufrem))) <= 0)
- goto senddone;
- bytes += c;
- bufrem -= c;
- for (bufp = buf; c > 0;
- c -= d, bufp += d)
- if ((d = write(fileno(dout),
- bufp, c)) <= 0)
- break;
- if (d < 0)
- goto senddone;
- if (hash &&
- (!progress || filesize < 0) ) {
- while (bytes >= hashbytes) {
- (void)putc('#', ttyout);
- hashbytes += mark;
- }
- (void)fflush(ttyout);
- }
- }
- while (1) {
- (void)gettimeofday(&now, NULL);
- timersub(&now, &then, &td);
- if (td.tv_sec > 0)
- break;
- usleep(1000000 - td.tv_usec);
- }
- }
- } else { /* simpler/faster; no rate limit */
- while (1) {
- errno = c = d = 0;
- if ((c = read(fileno(fin), buf, bufsize)) <= 0)
- goto senddone;
- bytes += c;
- for (bufp = buf; c > 0; c -= d, bufp += d)
- if ((d = write(fileno(dout), bufp, c))
- <= 0)
- break;
- if (d < 0)
- goto senddone;
- if (hash && (!progress || filesize < 0) ) {
- while (bytes >= hashbytes) {
- (void)putc('#', ttyout);
- hashbytes += mark;
- }
- (void)fflush(ttyout);
- }
- }
- }
- senddone:
- if (hash && (!progress || filesize < 0) && bytes > 0) {
- if (bytes < mark)
- (void)putc('#', ttyout);
- (void)putc('\n', ttyout);
- }
- if (c < 0)
- warn("local: %s", local);
- if (d < 0) {
- if (errno != EPIPE)
- warn("netout");
- bytes = -1;
- }
- break;
-
- case TYPE_A:
- while ((c = getc(fin)) != EOF) {
- if (c == '\n') {
- while (hash && (!progress || filesize < 0) &&
- (bytes >= hashbytes)) {
- (void)putc('#', ttyout);
- (void)fflush(ttyout);
- hashbytes += mark;
- }
- if (ferror(dout))
- break;
- (void)putc('\r', dout);
- bytes++;
- }
- (void)putc(c, dout);
- bytes++;
-#if 0 /* this violates RFC */
- if (c == '\r') {
- (void)putc('\0', dout);
- bytes++;
- }
-#endif
- }
- if (hash && (!progress || filesize < 0)) {
- if (bytes < hashbytes)
- (void)putc('#', ttyout);
- (void)putc('\n', ttyout);
- }
- if (ferror(fin))
- warn("local: %s", local);
- if (ferror(dout)) {
- if (errno != EPIPE)
- warn("netout");
- bytes = -1;
- }
- break;
- }
-
- progressmeter(1);
- if (closefunc != NULL) {
- (*closefunc)(fin);
- fin = NULL;
- }
- (void)fclose(dout);
- dout = NULL;
- (void)getreply(0);
- if (bytes > 0)
- ptransfer(0);
- goto cleanupsend;
-
- abort:
- (void)xsignal(SIGINT, oldintr);
- oldintr = NULL;
- if (!cpend) {
- code = -1;
- goto cleanupsend;
- }
- if (data >= 0) {
- (void)close(data);
- data = -1;
- }
- if (dout) {
- (void)fclose(dout);
- dout = NULL;
- }
- (void)getreply(0);
- code = -1;
- if (bytes > 0)
- ptransfer(0);
-
- cleanupsend:
- if (oldintr)
- (void)xsignal(SIGINT, oldintr);
- if (oldintp)
- (void)xsignal(SIGPIPE, oldintp);
- if (data >= 0) {
- (void)close(data);
- data = -1;
- }
- if (closefunc != NULL && fin != NULL)
- (*closefunc)(fin);
- if (dout)
- (void)fclose(dout);
- progress = oprogress;
- restart_point = 0;
- bytes = 0;
-}
-
-void
-recvrequest(const char *cmd, const char *local, const char *remote,
- const char *lmode, int printnames, int ignorespecial)
-{
- FILE *fout, *din;
- int (*closefunc)(FILE *);
- sigfunc oldintr, oldintp;
- int c, d;
- volatile int is_retr, tcrflag, bare_lfs;
- static size_t bufsize;
- static char *buf;
- volatile off_t hashbytes;
- struct stat st;
- time_t mtime;
- struct timeval tval[2];
- int oprogress;
- int opreserve;
-
-#ifdef __GNUC__ /* to shut up gcc warnings */
- (void)&local;
- (void)&fout;
- (void)&din;
- (void)&closefunc;
- (void)&oldintr;
- (void)&oldintp;
-#endif
-
- fout = NULL;
- din = NULL;
- hashbytes = mark;
- direction = "received";
- bytes = 0;
- bare_lfs = 0;
- filesize = -1;
- oprogress = progress;
- opreserve = preserve;
- is_retr = (strcmp(cmd, "RETR") == 0);
- if (is_retr && verbose && printnames) {
- if (local && (ignorespecial || *local != '-'))
- fprintf(ttyout, "local: %s ", local);
- if (remote)
- fprintf(ttyout, "remote: %s\n", remote);
- }
- if (proxy && is_retr) {
- proxtrans(cmd, local, remote);
- return;
- }
- closefunc = NULL;
- oldintr = NULL;
- oldintp = NULL;
- tcrflag = !crflag && is_retr;
- if (sigsetjmp(xferabort, 1)) {
- while (cpend)
- (void)getreply(0);
- code = -1;
- goto cleanuprecv;
- }
- (void)xsignal(SIGQUIT, psummary);
- oldintr = xsignal(SIGINT, abortxfer);
- if (ignorespecial || (strcmp(local, "-") && *local != '|')) {
- if (access(local, W_OK) < 0) {
- char *dir = strrchr(local, '/');
-
- if (errno != ENOENT && errno != EACCES) {
- warn("local: %s", local);
- code = -1;
- goto cleanuprecv;
- }
- if (dir != NULL)
- *dir = 0;
- d = access(dir == local ? "/" :
- dir ? local : ".", W_OK);
- if (dir != NULL)
- *dir = '/';
- if (d < 0) {
- warn("local: %s", local);
- code = -1;
- goto cleanuprecv;
- }
- if (!runique && errno == EACCES &&
- chmod(local, (S_IRUSR|S_IWUSR)) < 0) {
- warn("local: %s", local);
- code = -1;
- goto cleanuprecv;
- }
- if (runique && errno == EACCES &&
- (local = gunique(local)) == NULL) {
- code = -1;
- goto cleanuprecv;
- }
- }
- else if (runique && (local = gunique(local)) == NULL) {
- code = -1;
- goto cleanuprecv;
- }
- }
- if (!is_retr) {
- if (curtype != TYPE_A)
- changetype(TYPE_A, 0);
- } else {
- if (curtype != type)
- changetype(type, 0);
- filesize = remotesize(remote, 0);
- if (code == 421 || code == -1)
- goto cleanuprecv;
- }
- if (initconn()) {
- code = -1;
- goto cleanuprecv;
- }
- if (sigsetjmp(xferabort, 1))
- goto abort;
- if (is_retr && restart_point &&
- command("REST " LLF, (LLT) restart_point) != CONTINUE)
- goto cleanuprecv;
- if (! EMPTYSTRING(remote)) {
- if (command("%s %s", cmd, remote) != PRELIM)
- goto cleanuprecv;
- } else {
- if (command("%s", cmd) != PRELIM)
- goto cleanuprecv;
- }
- din = dataconn("r");
- if (din == NULL)
- goto abort;
- if (!ignorespecial && strcmp(local, "-") == 0) {
- fout = stdout;
- progress = 0;
- preserve = 0;
- } else if (!ignorespecial && *local == '|') {
- oldintp = xsignal(SIGPIPE, SIG_IGN);
- fout = popen(local + 1, "w");
- if (fout == NULL) {
- warn("%s", local+1);
- goto abort;
- }
- progress = 0;
- preserve = 0;
- closefunc = pclose;
- } else {
- fout = fopen(local, lmode);
- if (fout == NULL) {
- warn("local: %s", local);
- goto abort;
- }
- closefunc = fclose;
- }
-
- if (fstat(fileno(fout), &st) != -1 && !S_ISREG(st.st_mode)) {
- progress = 0;
- preserve = 0;
- }
- if (rcvbuf_size > bufsize) {
- if (buf)
- (void)free(buf);
- bufsize = rcvbuf_size;
- buf = xmalloc(bufsize);
- }
-
- progressmeter(-1);
-
- switch (curtype) {
-
- case TYPE_I:
- case TYPE_L:
- if (is_retr && restart_point &&
- lseek(fileno(fout), restart_point, SEEK_SET) < 0) {
- warn("local: %s", local);
- goto cleanuprecv;
- }
- if (rate_get) { /* rate limiting */
- while (1) {
- struct timeval then, now, td;
- off_t bufrem;
-
- (void)gettimeofday(&then, NULL);
- errno = c = d = 0;
- for (bufrem = rate_get; bufrem > 0; ) {
- if ((c = read(fileno(din), buf,
- MIN(bufsize, bufrem))) <= 0)
- goto recvdone;
- bytes += c;
- bufrem -=c;
- if ((d = write(fileno(fout), buf, c))
- != c)
- goto recvdone;
- if (hash &&
- (!progress || filesize < 0)) {
- while (bytes >= hashbytes) {
- (void)putc('#', ttyout);
- hashbytes += mark;
- }
- (void)fflush(ttyout);
- }
- }
- /* sleep until time is up */
- while (1) {
- (void)gettimeofday(&now, NULL);
- timersub(&now, &then, &td);
- if (td.tv_sec > 0)
- break;
- usleep(1000000 - td.tv_usec);
- }
- }
- } else { /* faster code (no limiting) */
- while (1) {
- errno = c = d = 0;
- if ((c = read(fileno(din), buf, bufsize)) <= 0)
- goto recvdone;
- bytes += c;
- if ((d = write(fileno(fout), buf, c)) != c)
- goto recvdone;
- if (hash && (!progress || filesize < 0)) {
- while (bytes >= hashbytes) {
- (void)putc('#', ttyout);
- hashbytes += mark;
- }
- (void)fflush(ttyout);
- }
- }
- }
- recvdone:
- if (hash && (!progress || filesize < 0) && bytes > 0) {
- if (bytes < mark)
- (void)putc('#', ttyout);
- (void)putc('\n', ttyout);
- }
- if (c < 0) {
- if (errno != EPIPE)
- warn("netin");
- bytes = -1;
- }
- if (d < c) {
- if (d < 0)
- warn("local: %s", local);
- else
- warnx("%s: short write", local);
- }
- break;
-
- case TYPE_A:
- if (is_retr && restart_point) {
- int ch;
- off_t i;
-
- if (fseeko(fout, (off_t)0, SEEK_SET) < 0)
- goto done;
- for (i = 0; i++ < restart_point;) {
- if ((ch = getc(fout)) == EOF)
- goto done;
- if (ch == '\n')
- i++;
- }
- if (fseeko(fout, (off_t)0, SEEK_CUR) < 0) {
- done:
- warn("local: %s", local);
- goto cleanuprecv;
- }
- }
- while ((c = getc(din)) != EOF) {
- if (c == '\n')
- bare_lfs++;
- while (c == '\r') {
- while (hash && (!progress || filesize < 0) &&
- (bytes >= hashbytes)) {
- (void)putc('#', ttyout);
- (void)fflush(ttyout);
- hashbytes += mark;
- }
- bytes++;
- if ((c = getc(din)) != '\n' || tcrflag) {
- if (ferror(fout))
- goto break2;
- (void)putc('\r', fout);
- if (c == '\0') {
- bytes++;
- goto contin2;
- }
- if (c == EOF)
- goto contin2;
- }
- }
- (void)putc(c, fout);
- bytes++;
- contin2: ;
- }
- break2:
- if (hash && (!progress || filesize < 0)) {
- if (bytes < hashbytes)
- (void)putc('#', ttyout);
- (void)putc('\n', ttyout);
- }
- if (ferror(din)) {
- if (errno != EPIPE)
- warn("netin");
- bytes = -1;
- }
- if (ferror(fout))
- warn("local: %s", local);
- break;
- }
-
- progressmeter(1);
- if (closefunc != NULL) {
- (*closefunc)(fout);
- fout = NULL;
- }
- (void)fclose(din);
- din = NULL;
- (void)getreply(0);
- if (bare_lfs) {
- fprintf(ttyout,
- "WARNING! %d bare linefeeds received in ASCII mode.\n",
- bare_lfs);
- fputs("File may not have transferred correctly.\n", ttyout);
- }
- if (bytes >= 0 && is_retr) {
- if (bytes > 0)
- ptransfer(0);
- if (preserve && (closefunc == fclose)) {
- mtime = remotemodtime(remote, 0);
- if (mtime != -1) {
- (void)gettimeofday(&tval[0], NULL);
- tval[1].tv_sec = mtime;
- tval[1].tv_usec = 0;
- if (utimes(local, tval) == -1) {
- fprintf(ttyout,
- "Can't change modification time on %s to %s",
- local, asctime(localtime(&mtime)));
- }
- }
- }
- }
- goto cleanuprecv;
-
- abort:
- /*
- * abort using RFC 959 recommended IP,SYNC sequence
- */
- if (! sigsetjmp(xferabort, 1)) {
- /* this is the first call */
- (void)xsignal(SIGINT, abort_squared);
- if (!cpend) {
- code = -1;
- goto cleanuprecv;
- }
- abort_remote(din);
- }
- code = -1;
- if (bytes > 0)
- ptransfer(0);
-
- cleanuprecv:
- if (oldintr)
- (void)xsignal(SIGINT, oldintr);
- if (oldintp)
- (void)xsignal(SIGPIPE, oldintp);
- if (data >= 0) {
- (void)close(data);
- data = -1;
- }
- if (closefunc != NULL && fout != NULL)
- (*closefunc)(fout);
- if (din)
- (void)fclose(din);
- progress = oprogress;
- preserve = opreserve;
- bytes = 0;
-}
-
-/*
- * Need to start a listen on the data channel before we send the command,
- * otherwise the server's connect may fail.
- */
-int
-initconn(void)
-{
- char *p, *a;
- int result, tmpno = 0;
- int on = 1;
- int error;
- u_int addr[16], port[2];
- u_int af, hal, pal;
- socklen_t len;
- char *pasvcmd = NULL;
-
-#ifdef INET6
- if (myctladdr.su_family == AF_INET6 && debug &&
- (IN6_IS_ADDR_LINKLOCAL(&myctladdr.si_su.su_sin6.sin6_addr) ||
- IN6_IS_ADDR_SITELOCAL(&myctladdr.si_su.su_sin6.sin6_addr))) {
- warnx("use of scoped address can be troublesome");
- }
-#endif
- reinit:
- if (passivemode) {
- data_addr = myctladdr;
- data = socket(data_addr.su_family, SOCK_STREAM, 0);
- if (data < 0) {
- warn("socket");
- return (1);
- }
- if ((options & SO_DEBUG) &&
- setsockopt(data, SOL_SOCKET, SO_DEBUG,
- (void *)&on, sizeof(on)) == -1) {
- if (debug)
- warn("setsockopt %s (ignored)", "SO_DEBUG");
- }
- result = COMPLETE + 1;
- switch (data_addr.su_family) {
- case AF_INET:
- if (epsv4 && !epsv4bad) {
- pasvcmd = "EPSV";
- result = command("EPSV");
- if (!connected)
- return (1);
- /*
- * this code is to be friendly with broken
- * BSDI ftpd
- */
- if (code / 10 == 22 && code != 229) {
- fputs(
-"wrong server: return code must be 229\n",
- ttyout);
- result = COMPLETE + 1;
- }
- if (result != COMPLETE) {
- epsv4bad = 1;
- if (debug)
- fputs(
- "disabling epsv4 for this connection\n",
- ttyout);
- }
- }
- if (result != COMPLETE) {
- pasvcmd = "PASV";
- result = command("PASV");
- if (!connected)
- return (1);
- }
- break;
-#ifdef INET6
- case AF_INET6:
- pasvcmd = "EPSV";
- result = command("EPSV");
- if (!connected)
- return (1);
- /* this code is to be friendly with broken BSDI ftpd */
- if (code / 10 == 22 && code != 229) {
- fputs(
-"wrong server: return code must be 229\n",
- ttyout);
- result = COMPLETE + 1;
- }
- if (result != COMPLETE) {
- pasvcmd = "LPSV";
- result = command("LPSV");
- }
- if (!connected)
- return (1);
- break;
-#endif
- default:
- result = COMPLETE + 1;
- break;
- }
- if (result != COMPLETE) {
- if (activefallback) {
- (void)close(data);
- data = -1;
- passivemode = 0;
-#if 0
- activefallback = 0;
-#endif
- goto reinit;
- }
- fputs("Passive mode refused.\n", ttyout);
- goto bad;
- }
-
-#define pack2(var, off) \
- (((var[(off) + 0] & 0xff) << 8) | ((var[(off) + 1] & 0xff) << 0))
-#define pack4(var, off) \
- (((var[(off) + 0] & 0xff) << 24) | ((var[(off) + 1] & 0xff) << 16) | \
- ((var[(off) + 2] & 0xff) << 8) | ((var[(off) + 3] & 0xff) << 0))
-#define UC(b) (((int)b)&0xff)
-
- /*
- * What we've got at this point is a string of comma separated
- * one-byte unsigned integer values, separated by commas.
- */
- if (strcmp(pasvcmd, "PASV") == 0) {
- if (data_addr.su_family != AF_INET) {
- fputs(
- "Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
- error = 1;
- goto bad;
- }
- if (code / 10 == 22 && code != 227) {
- fputs("wrong server: return code must be 227\n",
- ttyout);
- error = 1;
- goto bad;
- }
- error = sscanf(pasv, "%u,%u,%u,%u,%u,%u",
- &addr[0], &addr[1], &addr[2], &addr[3],
- &port[0], &port[1]);
- if (error != 6) {
- fputs(
-"Passive mode address scan failure. Shouldn't happen!\n", ttyout);
- error = 1;
- goto bad;
- }
- error = 0;
- memset(&data_addr, 0, sizeof(data_addr));
- data_addr.su_family = AF_INET;
- data_addr.su_len = sizeof(struct sockaddr_in);
- data_addr.si_su.su_sin.sin_addr.s_addr =
- htonl(pack4(addr, 0));
- data_addr.su_port = htons(pack2(port, 0));
- } else if (strcmp(pasvcmd, "LPSV") == 0) {
- if (code / 10 == 22 && code != 228) {
- fputs("wrong server: return code must be 228\n",
- ttyout);
- error = 1;
- goto bad;
- }
- switch (data_addr.su_family) {
- case AF_INET:
- error = sscanf(pasv,
-"%u,%u,%u,%u,%u,%u,%u,%u,%u",
- &af, &hal,
- &addr[0], &addr[1], &addr[2], &addr[3],
- &pal, &port[0], &port[1]);
- if (error != 9) {
- fputs(
-"Passive mode address scan failure. Shouldn't happen!\n", ttyout);
- error = 1;
- goto bad;
- }
- if (af != 4 || hal != 4 || pal != 2) {
- fputs(
-"Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
- error = 1;
- goto bad;
- }
-
- error = 0;
- memset(&data_addr, 0, sizeof(data_addr));
- data_addr.su_family = AF_INET;
- data_addr.su_len = sizeof(struct sockaddr_in);
- data_addr.si_su.su_sin.sin_addr.s_addr =
- htonl(pack4(addr, 0));
- data_addr.su_port = htons(pack2(port, 0));
- break;
-#ifdef INET6
- case AF_INET6:
- error = sscanf(pasv,
-"%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u,%u",
- &af, &hal,
- &addr[0], &addr[1], &addr[2], &addr[3],
- &addr[4], &addr[5], &addr[6], &addr[7],
- &addr[8], &addr[9], &addr[10],
- &addr[11], &addr[12], &addr[13],
- &addr[14], &addr[15],
- &pal, &port[0], &port[1]);
- if (error != 21) {
- fputs(
-"Passive mode address scan failure. Shouldn't happen!\n", ttyout);
- error = 1;
- goto bad;
- }
- if (af != 6 || hal != 16 || pal != 2) {
- fputs(
-"Passive mode AF mismatch. Shouldn't happen!\n", ttyout);
- error = 1;
- goto bad;
- }
-
- error = 0;
- memset(&data_addr, 0, sizeof(data_addr));
- data_addr.su_family = AF_INET6;
- data_addr.su_len = sizeof(struct sockaddr_in6);
- {
- int i;
- for (i = 0; i < sizeof(struct in6_addr); i++) {
- data_addr.si_su.su_sin6.sin6_addr.s6_addr[i] =
- UC(addr[i]);
- }
- }
- data_addr.su_port = htons(pack2(port, 0));
- break;
-#endif
- default:
- error = 1;
- }
- } else if (strcmp(pasvcmd, "EPSV") == 0) {
- char delim[4];
-
- port[0] = 0;
- if (code / 10 == 22 && code != 229) {
- fputs("wrong server: return code must be 229\n",
- ttyout);
- error = 1;
- goto bad;
- }
- if (sscanf(pasv, "%c%c%c%d%c", &delim[0],
- &delim[1], &delim[2], &port[1],
- &delim[3]) != 5) {
- fputs("parse error!\n", ttyout);
- error = 1;
- goto bad;
- }
- if (delim[0] != delim[1] || delim[0] != delim[2]
- || delim[0] != delim[3]) {
- fputs("parse error!\n", ttyout);
- error = 1;
- goto bad;
- }
- data_addr = hisctladdr;
- data_addr.su_port = htons(port[1]);
- } else
- goto bad;
-
- while (xconnect(data, (struct sockaddr *)&data_addr.si_su,
- data_addr.su_len) < 0) {
- if (activefallback) {
- (void)close(data);
- data = -1;
- passivemode = 0;
-#if 0
- activefallback = 0;
-#endif
- goto reinit;
- }
- warn("connect for data channel");
- goto bad;
- }
-#ifdef IPTOS_THROUGHPUT
- if (data_addr.su_family == AF_INET) {
- on = IPTOS_THROUGHPUT;
- if (setsockopt(data, IPPROTO_IP, IP_TOS,
- (void *)&on, sizeof(on)) == -1) {
- if (debug)
- warn("setsockopt %s (ignored)",
- "IPTOS_THROUGHPUT");
- }
- }
-#endif
- return (0);
- }
-
- noport:
- data_addr = myctladdr;
- if (sendport)
- data_addr.su_port = 0; /* let system pick one */
- if (data != -1)
- (void)close(data);
- data = socket(data_addr.su_family, SOCK_STREAM, 0);
- if (data < 0) {
- warn("socket");
- if (tmpno)
- sendport = 1;
- return (1);
- }
- if (!sendport)
- if (setsockopt(data, SOL_SOCKET, SO_REUSEADDR,
- (void *)&on, sizeof(on)) == -1) {
- warn("setsockopt %s", "SO_REUSEADDR");
- goto bad;
- }
- if (bind(data, (struct sockaddr *)&data_addr.si_su,
- data_addr.su_len) < 0) {
- warn("bind");
- goto bad;
- }
- if ((options & SO_DEBUG) &&
- setsockopt(data, SOL_SOCKET, SO_DEBUG,
- (void *)&on, sizeof(on)) == -1) {
- if (debug)
- warn("setsockopt %s (ignored)", "SO_DEBUG");
- }
- len = sizeof(data_addr.si_su);
- memset((char *)&data_addr, 0, sizeof (data_addr));
- if (getsockname(data, (struct sockaddr *)&data_addr.si_su, &len) == -1) {
- warn("getsockname");
- goto bad;
- }
- data_addr.su_len = len;
- if (xlisten(data, 1) < 0)
- warn("listen");
-
- if (sendport) {
- char hname[NI_MAXHOST], sname[NI_MAXSERV];
- int af;
- struct sockinet tmp;
-
- switch (data_addr.su_family) {
- case AF_INET:
- if (!epsv4 || epsv4bad) {
- result = COMPLETE + 1;
- break;
- }
- /* FALLTHROUGH */
-#ifdef INET6
- case AF_INET6:
-#endif
- af = (data_addr.su_family == AF_INET) ? 1 : 2;
- tmp = data_addr;
-#ifdef INET6
- if (tmp.su_family == AF_INET6)
- tmp.si_su.su_sin6.sin6_scope_id = 0;
-#endif
- if (getnameinfo((struct sockaddr *)&tmp.si_su,
- tmp.su_len, hname, sizeof(hname), sname,
- sizeof(sname), NI_NUMERICHOST | NI_NUMERICSERV)) {
- result = ERROR;
- } else {
- result = command("EPRT |%d|%s|%s|", af, hname,
- sname);
- if (!connected)
- return (1);
- if (result != COMPLETE) {
- epsv4bad = 1;
- if (debug)
- fputs(
- "disabling epsv4 for this connection\n",
- ttyout);
- }
- }
- break;
- default:
- result = COMPLETE + 1;
- break;
- }
- if (result == COMPLETE)
- goto skip_port;
-
- switch (data_addr.su_family) {
- case AF_INET:
- a = (char *)&data_addr.si_su.su_sin.sin_addr;
- p = (char *)&data_addr.su_port;
- 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]));
- break;
-#ifdef INET6
- case AF_INET6:
- a = (char *)&data_addr.si_su.su_sin6.sin6_addr;
- p = (char *)&data_addr.su_port;
- result = command(
- "LPRT %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d",
- 6, 16,
- UC(a[0]),UC(a[1]),UC(a[2]),UC(a[3]),
- UC(a[4]),UC(a[5]),UC(a[6]),UC(a[7]),
- UC(a[8]),UC(a[9]),UC(a[10]),UC(a[11]),
- UC(a[12]),UC(a[13]),UC(a[14]),UC(a[15]),
- 2, UC(p[0]), UC(p[1]));
- break;
-#endif
- default:
- result = COMPLETE + 1; /* xxx */
- }
- if (!connected)
- return (1);
- skip_port:
-
- if (result == ERROR && sendport == -1) {
- sendport = 0;
- tmpno = 1;
- goto noport;
- }
- return (result != COMPLETE);
- }
- if (tmpno)
- sendport = 1;
-#ifdef IPTOS_THROUGHPUT
- if (data_addr.su_family == AF_INET) {
- on = IPTOS_THROUGHPUT;
- if (setsockopt(data, IPPROTO_IP, IP_TOS,
- (void *)&on, sizeof(on)) == -1)
- if (debug)
- warn("setsockopt %s (ignored)",
- "IPTOS_THROUGHPUT");
- }
-#endif
- return (0);
- bad:
- (void)close(data);
- data = -1;
- if (tmpno)
- sendport = 1;
- return (1);
-}
-
-FILE *
-dataconn(const char *lmode)
-{
- struct sockinet from;
- int s, flags, rv, timeout;
- struct timeval endtime, now, td;
- struct pollfd pfd[1];
- socklen_t fromlen;
-
- if (passivemode) /* passive data connection */
- return (fdopen(data, lmode));
-
- /* active mode data connection */
-
- if ((flags = fcntl(data, F_GETFL, 0)) == -1)
- goto dataconn_failed; /* get current socket flags */
- if (fcntl(data, F_SETFL, flags | O_NONBLOCK) == -1)
- goto dataconn_failed; /* set non-blocking connect */
-
- /* NOTE: we now must restore socket flags on successful exit */
-
- /* limit time waiting on listening socket */
- pfd[0].fd = data;
- pfd[0].events = POLLIN;
- (void)gettimeofday(&endtime, NULL); /* determine end time */
- endtime.tv_sec += (quit_time > 0) ? quit_time: 60;
- /* without -q, default to 60s */
- do {
- (void)gettimeofday(&now, NULL);
- timersub(&endtime, &now, &td);
- timeout = td.tv_sec * 1000 + td.tv_usec/1000;
- if (timeout < 0)
- timeout = 0;
- rv = xpoll(pfd, 1, timeout);
- } while (rv == -1 && errno == EINTR); /* loop until poll ! EINTR */
- if (rv == -1) {
- warn("poll waiting before accept");
- goto dataconn_failed;
- }
- if (rv == 0) {
- warn("poll timeout waiting before accept");
- goto dataconn_failed;
- }
-
- /* (non-blocking) accept the connection */
- fromlen = myctladdr.su_len;
- do {
- s = accept(data, (struct sockaddr *) &from.si_su, &fromlen);
- } while (s == -1 && errno == EINTR); /* loop until accept ! EINTR */
- if (s == -1) {
- warn("accept");
- goto dataconn_failed;
- }
-
- (void)close(data);
- data = s;
- if (fcntl(data, F_SETFL, flags) == -1) /* restore socket flags */
- goto dataconn_failed;
-
-#ifdef IPTOS_THROUGHPUT
- if (from.su_family == AF_INET) {
- int tos = IPTOS_THROUGHPUT;
- if (setsockopt(s, IPPROTO_IP, IP_TOS,
- (void *)&tos, sizeof(tos)) == -1) {
- if (debug)
- warn("setsockopt %s (ignored)",
- "IPTOS_THROUGHPUT");
- }
- }
-#endif
- return (fdopen(data, lmode));
-
- dataconn_failed:
- (void)close(data);
- data = -1;
- return (NULL);
-}
-
-void
-psabort(int notused)
-{
- int oerrno = errno;
-
- sigint_raised = 1;
- alarmtimer(0);
- abrtflag++;
- errno = oerrno;
-}
-
-void
-pswitch(int flag)
-{
- sigfunc oldintr;
- static struct comvars {
- int connect;
- char name[MAXHOSTNAMELEN];
- struct sockinet mctl;
- struct sockinet hctl;
- FILE *in;
- FILE *out;
- int tpe;
- int curtpe;
- 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 = xsignal(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)strlcpy(ip->name, hostname, sizeof(ip->name));
- else
- ip->name[0] = '\0';
- hostname = op->name;
- ip->hctl = hisctladdr;
- hisctladdr = op->hctl;
- ip->mctl = myctladdr;
- myctladdr = op->mctl;
- ip->in = cin;
- cin = op->in;
- ip->out = cout;
- cout = op->out;
- ip->tpe = type;
- type = op->tpe;
- ip->curtpe = curtype;
- curtype = op->curtpe;
- ip->cpnd = cpend;
- cpend = op->cpnd;
- ip->sunqe = sunique;
- sunique = op->sunqe;
- ip->runqe = runique;
- runique = op->runqe;
- ip->mcse = mcase;
- mcase = op->mcse;
- ip->ntflg = ntflag;
- ntflag = op->ntflg;
- (void)strlcpy(ip->nti, ntin, sizeof(ip->nti));
- (void)strlcpy(ntin, op->nti, sizeof(ntin));
- (void)strlcpy(ip->nto, ntout, sizeof(ip->nto));
- (void)strlcpy(ntout, op->nto, sizeof(ntout));
- ip->mapflg = mapflag;
- mapflag = op->mapflg;
- (void)strlcpy(ip->mi, mapin, sizeof(ip->mi));
- (void)strlcpy(mapin, op->mi, sizeof(mapin));
- (void)strlcpy(ip->mo, mapout, sizeof(ip->mo));
- (void)strlcpy(mapout, op->mo, sizeof(mapout));
- (void)xsignal(SIGINT, oldintr);
- if (abrtflag) {
- abrtflag = 0;
- (*oldintr)(SIGINT);
- }
-}
-
-void
-abortpt(int notused)
-{
-
- sigint_raised = 1;
- alarmtimer(0);
- if (fromatty)
- write(fileno(ttyout), "\n", 1);
- ptabflg++;
- mflag = 0;
- abrtflag = 0;
- siglongjmp(ptabort, 1);
-}
-
-void
-proxtrans(const char *cmd, const char *local, const char *remote)
-{
- sigfunc oldintr;
- int prox_type, nfnd;
- volatile int secndflag;
- char *cmd2;
-
-#ifdef __GNUC__ /* to shut up gcc warnings */
- (void)&oldintr;
- (void)&cmd2;
-#endif
-
- oldintr = NULL;
- secndflag = 0;
- if (strcmp(cmd, "RETR"))
- cmd2 = "RETR";
- else
- cmd2 = runique ? "STOU" : "STOR";
- if ((prox_type = type) == 0) {
- if (unix_server && unix_proxy)
- prox_type = TYPE_I;
- else
- prox_type = TYPE_A;
- }
- if (curtype != prox_type)
- changetype(prox_type, 1);
- if (command("PASV") != COMPLETE) {
- fputs("proxy server does not support third party transfers.\n",
- ttyout);
- return;
- }
- pswitch(0);
- if (!connected) {
- fputs("No primary connection.\n", ttyout);
- pswitch(1);
- code = -1;
- return;
- }
- if (curtype != prox_type)
- changetype(prox_type, 1);
- if (command("PORT %s", pasv) != COMPLETE) {
- pswitch(1);
- return;
- }
- if (sigsetjmp(ptabort, 1))
- goto abort;
- oldintr = xsignal(SIGINT, abortpt);
- if ((restart_point &&
- (command("REST " LLF, (LLT) restart_point) != CONTINUE))
- || (command("%s %s", cmd, remote) != PRELIM)) {
- (void)xsignal(SIGINT, oldintr);
- pswitch(1);
- return;
- }
- sleep(2);
- pswitch(1);
- secndflag++;
- if ((restart_point &&
- (command("REST " LLF, (LLT) restart_point) != CONTINUE))
- || (command("%s %s", cmd2, local) != PRELIM))
- goto abort;
- ptflag++;
- (void)getreply(0);
- pswitch(0);
- (void)getreply(0);
- (void)xsignal(SIGINT, oldintr);
- pswitch(1);
- ptflag = 0;
- fprintf(ttyout, "local: %s remote: %s\n", local, remote);
- return;
- abort:
- if (sigsetjmp(xferabort, 1)) {
- (void)xsignal(SIGINT, oldintr);
- return;
- }
- (void)xsignal(SIGINT, abort_squared);
- ptflag = 0;
- if (strcmp(cmd, "RETR") && !proxy)
- pswitch(1);
- else if (!strcmp(cmd, "RETR") && proxy)
- pswitch(0);
- if (!cpend && !secndflag) { /* only here if cmd = "STOR" (proxy=1) */
- if (command("%s %s", cmd2, local) != PRELIM) {
- pswitch(0);
- if (cpend)
- abort_remote(NULL);
- }
- pswitch(1);
- if (ptabflg)
- code = -1;
- (void)xsignal(SIGINT, oldintr);
- return;
- }
- if (cpend)
- abort_remote(NULL);
- pswitch(!proxy);
- if (!cpend && !secndflag) { /* only if cmd = "RETR" (proxy=1) */
- if (command("%s %s", cmd2, local) != PRELIM) {
- pswitch(0);
- if (cpend)
- abort_remote(NULL);
- pswitch(1);
- if (ptabflg)
- code = -1;
- (void)xsignal(SIGINT, oldintr);
- return;
- }
- }
- if (cpend)
- abort_remote(NULL);
- pswitch(!proxy);
- if (cpend) {
- if ((nfnd = empty(cin, NULL, 10)) <= 0) {
- if (nfnd < 0)
- warn("abort");
- if (ptabflg)
- code = -1;
- lostpeer(0);
- }
- (void)getreply(0);
- (void)getreply(0);
- }
- if (proxy)
- pswitch(0);
- pswitch(1);
- if (ptabflg)
- code = -1;
- (void)xsignal(SIGINT, oldintr);
-}
-
-void
-reset(int argc, char *argv[])
-{
- int nfnd = 1;
-
- if (argc == 0 && argv != NULL) {
- fprintf(ttyout, "usage: %s\n", argv[0]);
- code = -1;
- return;
- }
- while (nfnd > 0) {
- if ((nfnd = empty(cin, NULL, 0)) < 0) {
- warn("reset");
- code = -1;
- lostpeer(0);
- } else if (nfnd)
- (void)getreply(0);
- }
-}
-
-char *
-gunique(const char *local)
-{
- static char new[MAXPATHLEN];
- char *cp = strrchr(local, '/');
- int d, count=0, len;
- char ext = '1';
-
- if (cp)
- *cp = '\0';
- d = access(cp == local ? "/" : cp ? local : ".", W_OK);
- if (cp)
- *cp = '/';
- if (d < 0) {
- warn("local: %s", local);
- return (NULL);
- }
- len = strlcpy(new, local, sizeof(new));
- cp = &new[len];
- *cp++ = '.';
- while (!d) {
- if (++count == 100) {
- fputs("runique: can't find unique file name.\n",
- ttyout);
- return (NULL);
- }
- *cp++ = ext;
- *cp = '\0';
- if (ext == '9')
- ext = '0';
- else
- ext++;
- if ((d = access(new, F_OK)) < 0)
- break;
- if (ext != '0')
- cp--;
- else if (*(cp - 2) == '.')
- *(cp - 1) = '1';
- else {
- *(cp - 2) = *(cp - 2) + 1;
- cp--;
- }
- }
- return (new);
-}
-
-/*
- * abort_squared --
- * aborts abort_remote(). lostpeer() is called because if the user is
- * too impatient to wait or there's another problem then ftp really
- * needs to get back to a known state.
- */
-void
-abort_squared(int dummy)
-{
- char msgbuf[100];
- size_t len;
-
- sigint_raised = 1;
- alarmtimer(0);
- len = strlcpy(msgbuf, "\nremote abort aborted; closing connection.\n",
- sizeof(msgbuf));
- write(fileno(ttyout), msgbuf, len);
- lostpeer(0);
- siglongjmp(xferabort, 1);
-}
-
-void
-abort_remote(FILE *din)
-{
- char buf[BUFSIZ];
- int nfnd;
-
- if (cout == NULL) {
- warnx("Lost control connection for abort.");
- if (ptabflg)
- code = -1;
- lostpeer(0);
- return;
- }
- /*
- * send IAC in urgent mode instead of DM because 4.3BSD places oob mark
- * after urgent byte rather than before as is protocol now
- */
- buf[0] = IAC;
- buf[1] = IP;
- buf[2] = IAC;
- if (send(fileno(cout), buf, 3, MSG_OOB) != 3)
- warn("abort");
- fprintf(cout, "%cABOR\r\n", DM);
- (void)fflush(cout);
- if ((nfnd = empty(cin, din, 10)) <= 0) {
- if (nfnd < 0)
- warn("abort");
- if (ptabflg)
- code = -1;
- lostpeer(0);
- }
- if (din && (nfnd & 2)) {
- while (read(fileno(din), buf, BUFSIZ) > 0)
- continue;
- }
- if (getreply(0) == ERROR && code == 552) {
- /* 552 needed for nic style abort */
- (void)getreply(0);
- }
- (void)getreply(0);
-}
-
-void
-ai_unmapped(struct addrinfo *ai)
-{
-#ifdef INET6
- struct sockaddr_in6 *sin6;
- struct sockaddr_in sin;
- socklen_t len;
-
- if (ai->ai_family != AF_INET6)
- return;
- if (ai->ai_addrlen != sizeof(struct sockaddr_in6) ||
- sizeof(sin) > ai->ai_addrlen)
- return;
- sin6 = (struct sockaddr_in6 *)ai->ai_addr;
- if (!IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
- return;
-
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- len = sizeof(struct sockaddr_in);
- memcpy(&sin.sin_addr, &sin6->sin6_addr.s6_addr[12],
- sizeof(sin.sin_addr));
- sin.sin_port = sin6->sin6_port;
-
- ai->ai_family = AF_INET;
-#if HAVE_SOCKADDR_SA_LEN
- sin.sin_len = len;
-#endif
- memcpy(ai->ai_addr, &sin, len);
- ai->ai_addrlen = len;
-#endif
-}