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authorDavid E. O'Brien <obrien@FreeBSD.org>2001-07-19 16:26:14 +0000
committerDavid E. O'Brien <obrien@FreeBSD.org>2001-07-19 16:26:14 +0000
commite25f7def37f0ffffe46ea434abca403a1fa6f30c (patch)
treeb2e212d8817efdff7190924a6cf96f692ec3f76d /contrib/lukemftp/src/ftp.c
downloadsrc-e25f7def37f0ffffe46ea434abca403a1fa6f30c.tar.gz
src-e25f7def37f0ffffe46ea434abca403a1fa6f30c.zip
Import of LukeM's ftp client, version 1.5.vendor/tnftp/1.5vendor/NetBSD/lukemftp/1.5
Notes
Notes: svn path=/vendor/lukemftp/dist/; revision=79971 svn path=/vendor/tnftp/1.5/; revision=223303; tag=vendor/tnftp/1.5
Diffstat (limited to 'contrib/lukemftp/src/ftp.c')
-rw-r--r--contrib/lukemftp/src/ftp.c2100
1 files changed, 2100 insertions, 0 deletions
diff --git a/contrib/lukemftp/src/ftp.c b/contrib/lukemftp/src/ftp.c
new file mode 100644
index 000000000000..b627b2b534b0
--- /dev/null
+++ b/contrib/lukemftp/src/ftp.c
@@ -0,0 +1,2100 @@
+/* $NetBSD: ftp.c,v 1.109 2000/09/28 12:29:24 lukem Exp $ */
+
+/*-
+ * Copyright (c) 1996-2000 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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 "lukemftp.h"
+
+#include <arpa/telnet.h>
+
+#include "ftp_var.h"
+
+volatile int abrtflag = 0;
+volatile int timeoutflag = 0;
+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, len, error, portnum;
+ struct addrinfo hints, *res, *res0;
+ char hbuf[MAXHOSTNAMELEN];
+ static char hostnamebuf[MAXHOSTNAMELEN];
+ char *cause = "unknown";
+
+ 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 = AF_UNSPEC;
+ 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
+ {
+ getnameinfo(res->ai_addr, res->ai_addrlen,
+ hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST);
+ 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;
+ }
+ while ((error = xconnect(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) {
+ getnameinfo(res->ai_addr, res->ai_addrlen,
+ hbuf, sizeof(hbuf), NULL, 0,
+ NI_NUMERICHOST);
+ 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) < 0) {
+ 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, (char *)&tos,
+ sizeof(int)) < 0)
+ warn("setsockopt TOS (ignored)");
+ }
+#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;
+ }
+ {
+ int on = 1;
+
+ if (setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char *)&on, sizeof(on))
+ < 0 && debug) {
+ warn("setsockopt");
+ }
+ }
+
+ return (hostname);
+ bad:
+ (void)close(s);
+ return (NULL);
+}
+
+void
+cmdabort(int notused)
+{
+ int oerrno = errno;
+
+ 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 != ')')
+ *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;
+ int nfd = 0;
+
+#ifdef USE_SELECT
+ struct timeval t;
+ fd_set rmask;
+
+ FD_ZERO(&rmask);
+ if (cin) {
+ if (nfd < fileno(cin))
+ nfd = fileno(cin);
+ FD_SET(fileno(cin), &rmask);
+ }
+ if (din) {
+ if (nfd < fileno(din))
+ nfd = fileno(din);
+ FD_SET(fileno(din), &rmask);
+ }
+
+ t.tv_sec = (long) sec;
+ t.tv_usec = 0;
+ if ((nr = select(nfd, &rmask, NULL, NULL, &t)) <= 0)
+ return nr;
+
+ nr = 0;
+ if (cin)
+ nr |= FD_ISSET(fileno(cin), &rmask) ? 1 : 0;
+ if (din)
+ nr |= FD_ISSET(fileno(din), &rmask) ? 2 : 0;
+
+#else
+ struct pollfd pfd[2];
+
+ if (cin) {
+ pfd[nfd].fd = fileno(cin);
+ pfd[nfd++].events = POLLIN;
+ }
+
+ if (din) {
+ pfd[nfd].fd = fileno(din);
+ pfd[nfd++].events = POLLIN;
+ }
+
+ if ((nr = poll(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;
+#endif
+ return nr;
+}
+
+sigjmp_buf xferabort;
+
+void
+abortxfer(int notused)
+{
+ char msgbuf[100];
+ int len;
+
+ 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 = fseek(fin, (long) 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+w";
+ }
+ if (remote) {
+ if (command("%s %s", cmd, remote) != PRELIM)
+ goto cleanupsend;
+ } else {
+ if (command("%s", cmd) != PRELIM)
+ goto cleanupsend;
+ }
+ 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;
+ long i, n;
+
+ if (fseek(fout, 0L, SEEK_SET) < 0)
+ goto done;
+ n = (long)restart_point;
+ for (i = 0; i++ < n;) {
+ if ((ch = getc(fout)) == EOF)
+ goto done;
+ if (ch == '\n')
+ i++;
+ }
+ if (fseek(fout, 0L, 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, len, tmpno = 0;
+ int on = 1;
+ int error;
+ u_int addr[16], port[2];
+ u_int af, hal, pal;
+ 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, (char *)&on,
+ sizeof(on)) < 0)
+ warn("setsockopt (ignored)");
+ result = COMPLETE + 1;
+ switch (data_addr.su_family) {
+ case AF_INET:
+ if (epsv4 && !epsv4bad) {
+ result = command(pasvcmd = "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) {
+ result = command(pasvcmd = "PASV");
+ if (!connected)
+ return (1);
+ }
+ break;
+#ifdef INET6
+ case AF_INET6:
+ result = command(pasvcmd = "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)
+ result = command(pasvcmd = "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 (errno == EINTR)
+ continue;
+ if (activefallback) {
+ (void)close(data);
+ data = -1;
+ passivemode = 0;
+#if 0
+ activefallback = 0;
+#endif
+ goto reinit;
+ }
+ warn("connect");
+ goto bad;
+ }
+#ifdef IPTOS_THROUGHPUT
+ if (data_addr.su_family == AF_INET) {
+ on = IPTOS_THROUGHPUT;
+ if (setsockopt(data, IPPROTO_IP, IP_TOS, (char *)&on,
+ sizeof(int)) < 0)
+ warn("setsockopt TOS (ignored)");
+ }
+#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, (char *)&on,
+ sizeof(on)) < 0) {
+ warn("setsockopt (reuse address)");
+ 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, (char *)&on,
+ sizeof(on)) < 0)
+ warn("setsockopt (ignored)");
+ len = sizeof(data_addr.si_su);
+ memset((char *)&data_addr, 0, sizeof (data_addr));
+ if (getsockname(data, (struct sockaddr *)&data_addr.si_su, &len) < 0) {
+ warn("getsockname");
+ goto bad;
+ }
+ data_addr.su_len = len;
+ if (xlisten(data, 1) < 0)
+ warn("listen");
+
+ if (sendport) {
+#ifdef INET6
+ char hname[INET6_ADDRSTRLEN];
+ int af;
+#endif
+
+ switch (data_addr.su_family) {
+ case AF_INET:
+ if (!epsv4 || epsv4bad) {
+ result = COMPLETE + 1;
+ break;
+ }
+ /* FALLTHROUGH */
+#ifdef INET6
+ case AF_INET6:
+ af = (data_addr.su_family == AF_INET) ? 1 : 2;
+ if (getnameinfo((struct sockaddr *)&data_addr.si_su,
+ data_addr.su_len, hname, sizeof(hname), NULL, 0,
+ NI_NUMERICHOST)) {
+ result = ERROR;
+ } else {
+ result = command("EPRT |%d|%s|%d|", af, hname,
+ ntohs(data_addr.su_port));
+ if (!connected)
+ return (1);
+ if (result != COMPLETE) {
+ epsv4bad = 1;
+ if (debug)
+ fputs(
+ "disabling epsv4 for this connection\n",
+ ttyout);
+ }
+ }
+ break;
+#endif
+ 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, (char *)&on,
+ sizeof(int)) < 0)
+ warn("setsockopt TOS (ignored)");
+ }
+#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, fromlen = myctladdr.su_len;
+
+ if (passivemode)
+ return (fdopen(data, lmode));
+
+ s = accept(data, (struct sockaddr *) &from.si_su, &fromlen);
+ if (s < 0) {
+ warn("accept");
+ (void)close(data), data = -1;
+ return (NULL);
+ }
+ (void)close(data);
+ data = s;
+#ifdef IPTOS_THROUGHPUT
+ if (from.su_family == AF_INET) {
+ int tos = IPTOS_THROUGHPUT;
+ if (setsockopt(s, IPPROTO_IP, IP_TOS, (char *)&tos,
+ sizeof(int)) < 0) {
+ warn("setsockopt TOS (ignored)");
+ }
+ }
+#endif
+ return (fdopen(data, lmode));
+}
+
+void
+psabort(int notused)
+{
+ int oerrno = errno;
+
+ 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)
+{
+
+ 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];
+ int len;
+
+ 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;
+ int 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
+}