diff options
Diffstat (limited to 'contrib/lukemftp/src/ftp.c')
| -rw-r--r-- | contrib/lukemftp/src/ftp.c | 2171 |
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 dae6131..0000000 --- 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 < ¤t_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 -} |
