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NetBSD/usr.bin/ftp/fetch.c

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/* $NetBSD: fetch.c,v 1.26 1998/07/26 12:59:40 lukem Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason Thorpe and 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: fetch.c,v 1.26 1998/07/26 12:59:40 lukem Exp $");
#endif /* not lint */
/*
* FTP User Program -- Command line file retrieval
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/ftp.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include "ftp_var.h"
static int url_get __P((const char *, const char *, const char *));
void aborthttp __P((int));
#define ABOUT_URL "about:" /* propaganda */
#define FILE_URL "file://" /* file URL prefix */
#define FTP_URL "ftp://" /* ftp URL prefix */
#define HTTP_URL "http://" /* http URL prefix */
#define FTP_PROXY "ftp_proxy" /* env var with ftp proxy location */
#define HTTP_PROXY "http_proxy" /* env var with http proxy location */
#define EMPTYSTRING(x) ((x) == NULL || (*(x) == '\0'))
jmp_buf httpabort;
/*
* Retrieve URL, via the proxy in $proxyvar if necessary.
* Modifies the string argument given.
* Returns -1 on failure, 0 on success
*/
static int
url_get(origline, proxyenv, outfile)
const char *origline;
const char *proxyenv;
const char *outfile;
{
struct sockaddr_in sin;
int isredirected;
in_port_t port;
volatile int s;
size_t len;
char *cp, *ep, *portnum, *path;
const char *savefile;
char *line, *proxy, *host, *buf;
volatile sig_t oldintr, oldintp;
off_t hashbytes;
struct hostent *hp = NULL;
int (*closefunc) __P((FILE *));
FILE *fin, *fout;
int retval;
enum { HTTP_URL_T=0, FTP_URL_T, FILE_URL_T } urltype;
time_t mtime;
closefunc = NULL;
fin = fout = NULL;
s = -1;
proxy = buf = NULL;
isredirected = 0;
retval = -1;
#ifdef __GNUC__ /* to shut up gcc warnings */
(void)&closefunc;
(void)&fin;
(void)&fout;
(void)&buf;
(void)&proxy;
(void)&savefile;
(void)&retval;
#endif
line = strdup(origline);
if (line == NULL)
errx(1, "Can't allocate memory to parse URL");
if (strncasecmp(line, HTTP_URL, sizeof(HTTP_URL) - 1) == 0) {
host = line + sizeof(HTTP_URL) - 1;
urltype = HTTP_URL_T;
} else if (strncasecmp(line, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
host = line + sizeof(FTP_URL) - 1;
urltype = FTP_URL_T;
} else if (strncasecmp(line, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
host = line + sizeof(FILE_URL) - 1;
urltype = FILE_URL_T;
} else
errx(1, "url_get: Invalid URL '%s'", line);
path = strchr(host, '/'); /* find path */
if (EMPTYSTRING(path)) {
switch (urltype) {
case FILE_URL_T:
break;
case FTP_URL_T:
goto noftpautologin;
case HTTP_URL_T:
warnx("Invalid URL (no `/' after host): %s", origline);
goto cleanup_url_get;
default:
errx(1, "Unknown URL type %d\n", urltype);
}
}
*path++ = '\0';
if (urltype == FILE_URL_T &&
*host != '\0' && strcmp(host, "localhost") != 0) {
warnx("No support for non local file URL: %s", origline);
goto cleanup_url_get;
}
if (EMPTYSTRING(path)) {
if (urltype == FTP_URL_T)
goto noftpautologin;
warnx("Invalid URL (no file after host): %s", origline);
goto cleanup_url_get;
}
if (outfile)
savefile = outfile;
else {
savefile = strrchr(path, '/'); /* find savefile */
if (savefile != NULL)
savefile++;
else
savefile = path;
}
if (EMPTYSTRING(savefile)) {
if (urltype == FTP_URL_T)
goto noftpautologin;
warnx("Invalid URL (no file after directory): %s", origline);
goto cleanup_url_get;
}
filesize = -1;
mtime = -1;
if (urltype == FILE_URL_T) { /* file:// URLs */
struct stat sb;
direction = "copied";
*--path = '/'; /* put / back in */
fin = fopen(path, "r");
if (fin == NULL) {
warn("Cannot open file %s", path);
goto cleanup_url_get;
}
if (fstat(fileno(fin), &sb) == 0) {
mtime = sb.st_mtime;
filesize = sb.st_size;
}
fprintf(ttyout, "Copying %s\n", path);
} else { /* ftp:// or http:// URLs */
direction = "retrieved";
if (proxyenv != NULL) { /* use proxy */
proxy = strdup(proxyenv);
if (proxy == NULL)
errx(1, "Can't allocate memory for proxy URL.");
if (strncasecmp(proxy, HTTP_URL,
sizeof(HTTP_URL) - 1) == 0)
host = proxy + sizeof(HTTP_URL) - 1;
else if (strncasecmp(proxy, FTP_URL,
sizeof(FTP_URL) - 1) == 0)
host = proxy + sizeof(FTP_URL) - 1;
else {
warnx("Malformed proxy URL: %s", proxyenv);
goto cleanup_url_get;
}
if (EMPTYSTRING(host)) {
warnx("Malformed proxy URL: %s", proxyenv);
goto cleanup_url_get;
}
*--path = '/'; /* add / back to real path */
path = strchr(host, '/');
/* remove trailing / on host */
if (! EMPTYSTRING(path))
*path++ = '\0';
path = line;
}
portnum = strchr(host, ':'); /* find portnum */
if (portnum != NULL)
*portnum++ = '\0';
if (debug)
fprintf(ttyout,
"host %s, port %s, path %s, save as %s.\n",
host, portnum, path, savefile);
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
if (isdigit((unsigned char)host[0])) {
if (inet_aton(host, &sin.sin_addr) == 0) {
warnx("Invalid IP address: %s", host);
goto cleanup_url_get;
}
} else {
hp = gethostbyname(host);
if (hp == NULL) {
warnx("%s: %s", host, hstrerror(h_errno));
goto cleanup_url_get;
}
if (hp->h_addrtype != AF_INET) {
warnx("%s: not an Internet address?", host);
goto cleanup_url_get;
}
memcpy(&sin.sin_addr, hp->h_addr, hp->h_length);
}
if (! EMPTYSTRING(portnum)) {
char *ep;
long nport;
nport = strtol(portnum, &ep, 10);
if (nport < 1 || nport > MAX_IN_PORT_T || *ep != '\0') {
warnx("Invalid port: %s", portnum);
goto cleanup_url_get;
}
port = htons((in_port_t)nport);
} else
port = httpport;
sin.sin_port = port;
s = socket(AF_INET, SOCK_STREAM, 0);
if (s == -1) {
warn("Can't create socket");
goto cleanup_url_get;
}
while (xconnect(s, (struct sockaddr *)&sin,
sizeof(sin)) == -1) {
if (errno == EINTR)
continue;
if (hp && hp->h_addr_list[1]) {
int oerrno = errno;
char *ia;
ia = inet_ntoa(sin.sin_addr);
errno = oerrno;
warn("connect to address %s", ia);
hp->h_addr_list++;
memcpy(&sin.sin_addr, hp->h_addr_list[0],
(size_t)hp->h_length);
fprintf(ttyout, "Trying %s...\n",
inet_ntoa(sin.sin_addr));
(void)close(s);
s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0) {
warn("Can't create socket");
goto cleanup_url_get;
}
continue;
}
warn("Can't connect to %s", host);
goto cleanup_url_get;
}
fin = fdopen(s, "r+");
/*
* Construct and send the request. Proxy requests don't want
* leading /.
*/
if (!proxy) {
fprintf(ttyout, "Requesting %s\n", origline);
fprintf(fin, "GET /%s HTTP/1.1\r\n", path);
fprintf(fin, "Host: %s\r\n", host);
fprintf(fin, "Connection: close\r\n\r\n");
} else {
fprintf(ttyout, "Requesting %s\n (via %s)\n",
origline, proxyenv);
fprintf(fin, "GET %s HTTP/1.0\r\n\r\n", path);
}
if (fflush(fin) == EOF) {
warn("Writing HTTP request");
goto cleanup_url_get;
}
/* Read the response */
if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0)) == NULL) {
warn("Receiving HTTP reply");
goto cleanup_url_get;
}
while (len > 0 && (buf[len-1] == '\r' || buf[len-1] == '\n'))
buf[--len] = '\0';
if (debug)
fprintf(ttyout, "received '%s'\n", buf);
cp = strchr(buf, ' ');
if (cp == NULL)
goto improper;
else
cp++;
if (strncmp(cp, "301", 3) == 0 || strncmp(cp, "302", 3) == 0) {
isredirected++;
} else if (strncmp(cp, "200", 3)) {
warnx("Error retrieving file: %s", cp);
goto cleanup_url_get;
}
/* Read the rest of the header. */
free(buf);
while (1) {
if ((buf = fparseln(fin, &len, NULL, "\0\0\0", 0))
== NULL) {
warn("Receiving HTTP reply");
goto cleanup_url_get;
}
while (len > 0 &&
(buf[len-1] == '\r' || buf[len-1] == '\n'))
buf[--len] = '\0';
if (len == 0)
break;
if (debug)
fprintf(ttyout, "received '%s'\n", buf);
/* Look for some headers */
cp = buf;
#define CONTENTLEN "Content-Length: "
if (strncasecmp(cp, CONTENTLEN,
sizeof(CONTENTLEN) - 1) == 0) {
cp += sizeof(CONTENTLEN) - 1;
filesize = strtol(cp, &ep, 10);
if (filesize < 1 || *ep != '\0')
goto improper;
if (debug)
fprintf(ttyout,
#ifndef NO_QUAD
"parsed length as: %qd\n",
(long long)filesize);
#else
"parsed length as: %ld\n",
(long)filesize);
#endif
#define LASTMOD "Last-Modified: "
} else if (strncasecmp(cp, LASTMOD,
sizeof(LASTMOD) - 1) == 0) {
struct tm parsed;
char *t;
cp += sizeof(LASTMOD) - 1;
/* RFC 1123 */
if ((t = strptime(cp,
"%a, %d %b %Y %H:%M:%S GMT",
&parsed))
/* RFC 850 */
|| (t = strptime(cp,
"%a, %d-%b-%y %H:%M:%S GMT",
&parsed))
/* asctime */
|| (t = strptime(cp,
"%a, %b %d %H:%M:%S %Y",
&parsed))) {
if (*t == '\0')
mtime = mktime(&parsed);
if (debug && mtime != -1)
fprintf(ttyout,
"parsed date as: %s",
ctime(&mtime));
}
#define LOCATION "Location: "
} else if (isredirected &&
strncasecmp(cp, LOCATION,
sizeof(LOCATION) - 1) == 0) {
cp += sizeof(LOCATION) - 1;
if (debug)
fprintf(ttyout,
"parsed location as: %s\n", cp);
if (verbose)
fprintf(ttyout,
"Redirected to %s\n", cp);
resetsockbufsize();
if (fin != NULL)
fclose(fin);
else if (s != -1)
close(s);
if (closefunc != NULL && fout != NULL)
(*closefunc)(fout);
if (proxy)
free(proxy);
free(line);
retval = url_get(cp, proxyenv, outfile);
if (buf)
free(buf);
return retval;
}
}
free(buf);
}
oldintr = oldintp = NULL;
/* Open the output file. */
if (strcmp(savefile, "-") == 0) {
fout = stdout;
} else if (*savefile == '|') {
oldintp = signal(SIGPIPE, SIG_IGN);
fout = popen(savefile + 1, "w");
if (fout == NULL) {
warn("Can't run %s", savefile + 1);
goto cleanup_url_get;
}
closefunc = pclose;
} else {
fout = fopen(savefile, "w");
if (fout == NULL) {
warn("Can't open %s", savefile);
goto cleanup_url_get;
}
closefunc = fclose;
}
/* Trap signals */
if (setjmp(httpabort)) {
if (oldintr)
(void)signal(SIGINT, oldintr);
if (oldintp)
(void)signal(SIGPIPE, oldintp);
goto cleanup_url_get;
}
oldintr = signal(SIGINT, aborthttp);
bytes = 0;
hashbytes = mark;
progressmeter(-1);
/* Finally, suck down the file. */
if ((buf = malloc(BUFSIZ)) == NULL)
errx(1, "Can't allocate memory for transfer buffer\n");
while ((len = fread(buf, sizeof(char), BUFSIZ, fin)) > 0) {
bytes += len;
if (fwrite(buf, sizeof(char), len, fout) != len) {
warn("Writing %s", savefile);
goto cleanup_url_get;
}
if (hash && !progress) {
while (bytes >= hashbytes) {
(void)putc('#', ttyout);
hashbytes += mark;
}
(void)fflush(ttyout);
}
}
if (hash && !progress && bytes > 0) {
if (bytes < mark)
(void)putc('#', ttyout);
(void)putc('\n', ttyout);
(void)fflush(ttyout);
}
if (ferror(fin)) {
warn("Reading file");
goto cleanup_url_get;
}
progressmeter(1);
(void)fflush(fout);
(void)signal(SIGINT, oldintr);
if (oldintp)
(void)signal(SIGPIPE, oldintp);
if (closefunc == fclose && mtime != -1) {
struct timeval tval[2];
(void)gettimeofday(&tval[0], NULL);
tval[1].tv_sec = mtime;
tval[1].tv_usec = 0;
if (futimes(fileno(fout), tval) == -1) {
fprintf(ttyout,
"Can't change modification time to %s",
asctime(localtime(&mtime)));
}
}
if (bytes > 0)
ptransfer(0);
retval = 0;
goto cleanup_url_get;
noftpautologin:
warnx(
"Auto-login using ftp URLs isn't supported when using $ftp_proxy");
goto cleanup_url_get;
improper:
warnx("Improper response from %s", host);
cleanup_url_get:
resetsockbufsize();
if (fin != NULL)
fclose(fin);
else if (s != -1)
close(s);
if (closefunc != NULL && fout != NULL)
(*closefunc)(fout);
if (buf)
free(buf);
if (proxy)
free(proxy);
free(line);
return (retval);
}
/*
* Abort a http retrieval
*/
void
aborthttp(notused)
int notused;
{
alarmtimer(0);
fputs("\nHTTP fetch aborted.\n", ttyout);
(void)fflush(ttyout);
longjmp(httpabort, 1);
}
/*
* Retrieve multiple files from the command line, transferring
* URLs of the form "host:path", "ftp://host/path" using the
* ftp protocol, URLs of the form "http://host/path" using the
* http protocol, and URLs of the form "file:///" by simple
* copying.
* If path has a trailing "/", then return (-1);
* the path will be cd-ed into and the connection remains open,
* and the function will return -1 (to indicate the connection
* is alive).
* If an error occurs the return value will be the offset+1 in
* argv[] of the file that caused a problem (i.e, argv[x]
* returns x+1)
* Otherwise, 0 is returned if all files retrieved successfully.
*/
int
auto_fetch(argc, argv, outfile)
int argc;
char *argv[];
char *outfile;
{
static char lasthost[MAXHOSTNAMELEN];
char *xargv[5];
char *cp, *line, *host, *dir, *file, *portnum;
char *user, *pass;
char *ftpproxy, *httpproxy;
int rval, xargc;
volatile int argpos;
int dirhasglob, filehasglob;
char rempath[MAXPATHLEN];
#ifdef __GNUC__ /* to shut up gcc warnings */
(void)&outfile;
#endif
argpos = 0;
if (setjmp(toplevel)) {
if (connected)
disconnect(0, NULL);
return (argpos + 1);
}
(void)signal(SIGINT, (sig_t)intr);
(void)signal(SIGPIPE, (sig_t)lostpeer);
ftpproxy = getenv(FTP_PROXY);
httpproxy = getenv(HTTP_PROXY);
/*
* Loop through as long as there's files to fetch.
*/
for (rval = 0; (rval == 0) && (argpos < argc); free(line), argpos++) {
if (strchr(argv[argpos], ':') == NULL)
break;
host = dir = file = portnum = user = pass = NULL;
/*
* We muck with the string, so we make a copy.
*/
line = strdup(argv[argpos]);
if (line == NULL)
errx(1, "Can't allocate memory for auto-fetch.");
#ifndef SMALL
/*
* Check for about:*
*/
if (strncasecmp(line, ABOUT_URL, sizeof(ABOUT_URL) - 1) == 0) {
cp = line + sizeof(ABOUT_URL) -1;
if (strcasecmp(cp, "ftp") == 0) {
fprintf(ttyout, "%s\n%s\n",
"This version of ftp has been enhanced by Luke Mewburn <lukem@netbsd.org>.",
"Execute 'man ftp' for more details");
} else if (strcasecmp(cp, "netbsd") == 0) {
fprintf(ttyout, "%s\n%s\n",
"NetBSD is a freely available and redistributable UNIX-like operating system.",
"For more information, see http://www.netbsd.org/index.html");
} else {
fprintf(ttyout,
"'%s' is an interesting topic.\n", cp);
}
continue;
}
#endif /* SMALL */
/*
* Check for file:// and http:// URLs.
*/
if (strncasecmp(line, HTTP_URL, sizeof(HTTP_URL) - 1) == 0 ||
strncasecmp(line, FILE_URL, sizeof(FILE_URL) - 1) == 0) {
if (url_get(line, httpproxy, outfile) == -1)
rval = argpos + 1;
continue;
}
/*
* Try FTP URL-style arguments next. If ftpproxy is
* set, use url_get() instead of standard ftp.
* Finally, try host:file.
*/
host = line;
if (strncasecmp(line, FTP_URL, sizeof(FTP_URL) - 1) == 0) {
if (ftpproxy) {
if (url_get(line, ftpproxy, outfile) == -1)
rval = argpos + 1;
continue;
}
host += sizeof(FTP_URL) - 1;
dir = strchr(host, '/');
/* look for [user:pass@]host[:port] */
pass = strpbrk(host, ":@/");
if (pass == NULL || *pass == '/') {
pass = NULL;
goto parsed_url;
}
if (pass == host || *pass == '@') {
bad_url:
warnx("Invalid URL: %s", argv[argpos]);
rval = argpos + 1;
continue;
}
*pass++ = '\0';
cp = strpbrk(pass, ":@/");
if (cp == NULL || *cp == '/') {
portnum = pass;
pass = NULL;
goto parsed_url;
}
if (EMPTYSTRING(cp) || *cp == ':')
goto bad_url;
*cp++ = '\0';
user = host;
if (EMPTYSTRING(user))
goto bad_url;
host = cp;
portnum = strchr(host, ':');
if (portnum != NULL)
*portnum++ = '\0';
} else { /* classic style `host:file' */
dir = strchr(host, ':');
}
parsed_url:
if (EMPTYSTRING(host)) {
rval = argpos + 1;
continue;
}
/*
* If dir is NULL, the file wasn't specified
* (URL looked something like ftp://host)
*/
if (dir != NULL)
*dir++ = '\0';
/*
* Extract the file and (if present) directory name.
*/
if (! EMPTYSTRING(dir)) {
cp = strrchr(dir, '/');
if (cp != NULL) {
*cp++ = '\0';
file = cp;
} else {
file = dir;
dir = NULL;
}
}
if (debug)
fprintf(ttyout,
"user %s:%s host %s port %s dir %s file %s\n",
user, pass, host, portnum, dir, file);
/*
* Set up the connection if we don't have one.
*/
if (strcmp(host, lasthost) != 0) {
int oautologin;
(void)strcpy(lasthost, host);
if (connected)
disconnect(0, NULL);
xargv[0] = __progname;
xargv[1] = host;
xargv[2] = NULL;
xargc = 2;
if (! EMPTYSTRING(portnum)) {
xargv[2] = portnum;
xargv[3] = NULL;
xargc = 3;
}
oautologin = autologin;
if (user != NULL)
autologin = 0;
setpeer(xargc, xargv);
autologin = oautologin;
if ((connected == 0)
|| ((connected == 1) &&
!ftp_login(host, user, pass)) ) {
warnx("Can't connect or login to host `%s'",
host);
rval = argpos + 1;
continue;
}
/* Always use binary transfers. */
setbinary(0, NULL);
}
/* cd back to '/' */
xargv[0] = "cd";
xargv[1] = "/";
xargv[2] = NULL;
cd(2, xargv);
if (! dirchange) {
rval = argpos + 1;
continue;
}
dirhasglob = filehasglob = 0;
if (doglob) {
if (! EMPTYSTRING(dir) &&
strpbrk(dir, "*?[]{}") != NULL)
dirhasglob = 1;
if (! EMPTYSTRING(file) &&
strpbrk(file, "*?[]{}") != NULL)
filehasglob = 1;
}
/* Change directories, if necessary. */
if (! EMPTYSTRING(dir) && !dirhasglob) {
xargv[0] = "cd";
xargv[1] = dir;
xargv[2] = NULL;
cd(2, xargv);
if (! dirchange) {
rval = argpos + 1;
continue;
}
}
if (EMPTYSTRING(file)) {
rval = -1;
continue;
}
if (!verbose)
fprintf(ttyout, "Retrieving %s/%s\n", dir ? dir : "",
file);
if (dirhasglob) {
snprintf(rempath, sizeof(rempath), "%s/%s", dir, file);
file = rempath;
}
/* Fetch the file(s). */
xargc = 2;
xargv[0] = "get";
xargv[1] = file;
xargv[2] = NULL;
if (dirhasglob || filehasglob) {
int ointeractive;
ointeractive = interactive;
interactive = 0;
xargv[0] = "mget";
mget(xargc, xargv);
interactive = ointeractive;
} else {
if (outfile != NULL) {
xargv[2] = outfile;
xargv[3] = NULL;
xargc++;
}
get(xargc, xargv);
if (outfile != NULL && strcmp(outfile, "-") != 0
&& outfile[0] != '|')
outfile = NULL;
}
if ((code / 100) != COMPLETE)
rval = argpos + 1;
}
if (connected && rval != -1)
disconnect(0, NULL);
return (rval);
}
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