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fetch.c revision 1.201
      1 /*	$NetBSD: fetch.c,v 1.200 2012/12/22 16:57:09 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997-2009 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Luke Mewburn.
      9  *
     10  * This code is derived from software contributed to The NetBSD Foundation
     11  * by Scott Aaron Bamford.
     12  *
     13  * Redistribution and use in source and binary forms, with or without
     14  * modification, are permitted provided that the following conditions
     15  * are met:
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice, this list of conditions and the following disclaimer.
     18  * 2. Redistributions in binary form must reproduce the above copyright
     19  *    notice, this list of conditions and the following disclaimer in the
     20  *    documentation and/or other materials provided with the distribution.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #ifndef lint
     37 __RCSID("$NetBSD: fetch.c,v 1.200 2012/12/22 16:57:09 christos Exp $");
     38 #endif /* not lint */
     39 
     40 /*
     41  * FTP User Program -- Command line file retrieval
     42  */
     43 
     44 #include <sys/types.h>
     45 #include <sys/param.h>
     46 #include <sys/socket.h>
     47 #include <sys/stat.h>
     48 #include <sys/time.h>
     49 
     50 #include <netinet/in.h>
     51 
     52 #include <arpa/ftp.h>
     53 #include <arpa/inet.h>
     54 
     55 #include <assert.h>
     56 #include <ctype.h>
     57 #include <err.h>
     58 #include <errno.h>
     59 #include <netdb.h>
     60 #include <fcntl.h>
     61 #include <stdio.h>
     62 #include <stdlib.h>
     63 #include <string.h>
     64 #include <unistd.h>
     65 #include <time.h>
     66 
     67 #include "ssl.h"
     68 #include "ftp_var.h"
     69 #include "version.h"
     70 
     71 typedef enum {
     72 	UNKNOWN_URL_T=-1,
     73 	HTTP_URL_T,
     74 #ifdef WITH_SSL
     75 	HTTPS_URL_T,
     76 #endif
     77 	FTP_URL_T,
     78 	FILE_URL_T,
     79 	CLASSIC_URL_T
     80 } url_t;
     81 
     82 __dead static void	aborthttp(int);
     83 #ifndef NO_AUTH
     84 static int	auth_url(const char *, char **, const char *, const char *);
     85 static void	base64_encode(const unsigned char *, size_t, unsigned char *);
     86 #endif
     87 static int	go_fetch(const char *);
     88 static int	fetch_ftp(const char *);
     89 static int	fetch_url(const char *, const char *, char *, char *);
     90 static const char *match_token(const char **, const char *);
     91 static int	parse_url(const char *, const char *, url_t *, char **,
     92 			    char **, char **, char **, in_port_t *, char **);
     93 static void	url_decode(char *);
     94 
     95 static int	redirect_loop;
     96 
     97 
     98 #define	STRNEQUAL(a,b)	(strncasecmp((a), (b), sizeof((b))-1) == 0)
     99 #define	ISLWS(x)	((x)=='\r' || (x)=='\n' || (x)==' ' || (x)=='\t')
    100 #define	SKIPLWS(x)	do { while (ISLWS((*x))) x++; } while (0)
    101 
    102 
    103 #define	ABOUT_URL	"about:"	/* propaganda */
    104 #define	FILE_URL	"file://"	/* file URL prefix */
    105 #define	FTP_URL		"ftp://"	/* ftp URL prefix */
    106 #define	HTTP_URL	"http://"	/* http URL prefix */
    107 #ifdef WITH_SSL
    108 #define	HTTPS_URL	"https://"	/* https URL prefix */
    109 
    110 #define	IS_HTTP_TYPE(urltype) \
    111 	(((urltype) == HTTP_URL_T) || ((urltype) == HTTPS_URL_T))
    112 #else
    113 #define	IS_HTTP_TYPE(urltype) \
    114 	((urltype) == HTTP_URL_T)
    115 #endif
    116 
    117 /*
    118  * Determine if token is the next word in buf (case insensitive).
    119  * If so, advance buf past the token and any trailing LWS, and
    120  * return a pointer to the token (in buf).  Otherwise, return NULL.
    121  * token may be preceded by LWS.
    122  * token must be followed by LWS or NUL.  (I.e, don't partial match).
    123  */
    124 static const char *
    125 match_token(const char **buf, const char *token)
    126 {
    127 	const char	*p, *orig;
    128 	size_t		tlen;
    129 
    130 	tlen = strlen(token);
    131 	p = *buf;
    132 	SKIPLWS(p);
    133 	orig = p;
    134 	if (strncasecmp(p, token, tlen) != 0)
    135 		return NULL;
    136 	p += tlen;
    137 	if (*p != '\0' && !ISLWS(*p))
    138 		return NULL;
    139 	SKIPLWS(p);
    140 	orig = *buf;
    141 	*buf = p;
    142 	return orig;
    143 }
    144 
    145 #ifndef NO_AUTH
    146 /*
    147  * Generate authorization response based on given authentication challenge.
    148  * Returns -1 if an error occurred, otherwise 0.
    149  * Sets response to a malloc(3)ed string; caller should free.
    150  */
    151 static int
    152 auth_url(const char *challenge, char **response, const char *guser,
    153 	const char *gpass)
    154 {
    155 	const char	*cp, *scheme, *errormsg;
    156 	char		*ep, *clear, *realm;
    157 	char		 uuser[BUFSIZ], *gotpass;
    158 	const char	*upass;
    159 	int		 rval;
    160 	size_t		 len, clen, rlen;
    161 
    162 	*response = NULL;
    163 	clear = realm = NULL;
    164 	rval = -1;
    165 	cp = challenge;
    166 	scheme = "Basic";	/* only support Basic authentication */
    167 	gotpass = NULL;
    168 
    169 	DPRINTF("auth_url: challenge `%s'\n", challenge);
    170 
    171 	if (! match_token(&cp, scheme)) {
    172 		warnx("Unsupported authentication challenge `%s'",
    173 		    challenge);
    174 		goto cleanup_auth_url;
    175 	}
    176 
    177 #define	REALM "realm=\""
    178 	if (STRNEQUAL(cp, REALM))
    179 		cp += sizeof(REALM) - 1;
    180 	else {
    181 		warnx("Unsupported authentication challenge `%s'",
    182 		    challenge);
    183 		goto cleanup_auth_url;
    184 	}
    185 /* XXX: need to improve quoted-string parsing to support \ quoting, etc. */
    186 	if ((ep = strchr(cp, '\"')) != NULL) {
    187 		len = ep - cp;
    188 		realm = (char *)ftp_malloc(len + 1);
    189 		(void)strlcpy(realm, cp, len + 1);
    190 	} else {
    191 		warnx("Unsupported authentication challenge `%s'",
    192 		    challenge);
    193 		goto cleanup_auth_url;
    194 	}
    195 
    196 	fprintf(ttyout, "Username for `%s': ", realm);
    197 	if (guser != NULL) {
    198 		(void)strlcpy(uuser, guser, sizeof(uuser));
    199 		fprintf(ttyout, "%s\n", uuser);
    200 	} else {
    201 		(void)fflush(ttyout);
    202 		if (get_line(stdin, uuser, sizeof(uuser), &errormsg) < 0) {
    203 			warnx("%s; can't authenticate", errormsg);
    204 			goto cleanup_auth_url;
    205 		}
    206 	}
    207 	if (gpass != NULL)
    208 		upass = gpass;
    209 	else {
    210 		gotpass = getpass("Password: ");
    211 		if (gotpass == NULL) {
    212 			warnx("Can't read password");
    213 			goto cleanup_auth_url;
    214 		}
    215 		upass = gotpass;
    216 	}
    217 
    218 	clen = strlen(uuser) + strlen(upass) + 2;	/* user + ":" + pass + "\0" */
    219 	clear = (char *)ftp_malloc(clen);
    220 	(void)strlcpy(clear, uuser, clen);
    221 	(void)strlcat(clear, ":", clen);
    222 	(void)strlcat(clear, upass, clen);
    223 	if (gotpass)
    224 		memset(gotpass, 0, strlen(gotpass));
    225 
    226 						/* scheme + " " + enc + "\0" */
    227 	rlen = strlen(scheme) + 1 + (clen + 2) * 4 / 3 + 1;
    228 	*response = (char *)ftp_malloc(rlen);
    229 	(void)strlcpy(*response, scheme, rlen);
    230 	len = strlcat(*response, " ", rlen);
    231 			/* use  `clen - 1'  to not encode the trailing NUL */
    232 	base64_encode((unsigned char *)clear, clen - 1,
    233 	    (unsigned char *)*response + len);
    234 	memset(clear, 0, clen);
    235 	rval = 0;
    236 
    237  cleanup_auth_url:
    238 	FREEPTR(clear);
    239 	FREEPTR(realm);
    240 	return (rval);
    241 }
    242 
    243 /*
    244  * Encode len bytes starting at clear using base64 encoding into encoded,
    245  * which should be at least ((len + 2) * 4 / 3 + 1) in size.
    246  */
    247 static void
    248 base64_encode(const unsigned char *clear, size_t len, unsigned char *encoded)
    249 {
    250 	static const unsigned char enc[] =
    251 	    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    252 	unsigned char	*cp;
    253 	size_t	 i;
    254 
    255 	cp = encoded;
    256 	for (i = 0; i < len; i += 3) {
    257 		*(cp++) = enc[((clear[i + 0] >> 2))];
    258 		*(cp++) = enc[((clear[i + 0] << 4) & 0x30)
    259 			    | ((clear[i + 1] >> 4) & 0x0f)];
    260 		*(cp++) = enc[((clear[i + 1] << 2) & 0x3c)
    261 			    | ((clear[i + 2] >> 6) & 0x03)];
    262 		*(cp++) = enc[((clear[i + 2]     ) & 0x3f)];
    263 	}
    264 	*cp = '\0';
    265 	while (i-- > len)
    266 		*(--cp) = '=';
    267 }
    268 #endif
    269 
    270 /*
    271  * Decode %xx escapes in given string, `in-place'.
    272  */
    273 static void
    274 url_decode(char *url)
    275 {
    276 	unsigned char *p, *q;
    277 
    278 	if (EMPTYSTRING(url))
    279 		return;
    280 	p = q = (unsigned char *)url;
    281 
    282 #define	HEXTOINT(x) (x - (isdigit(x) ? '0' : (islower(x) ? 'a' : 'A') - 10))
    283 	while (*p) {
    284 		if (p[0] == '%'
    285 		    && p[1] && isxdigit((unsigned char)p[1])
    286 		    && p[2] && isxdigit((unsigned char)p[2])) {
    287 			*q++ = HEXTOINT(p[1]) * 16 + HEXTOINT(p[2]);
    288 			p+=3;
    289 		} else
    290 			*q++ = *p++;
    291 	}
    292 	*q = '\0';
    293 }
    294 
    295 
    296 /*
    297  * Parse URL of form (per RFC 3986):
    298  *	<type>://[<user>[:<password>]@]<host>[:<port>][/<path>]
    299  * Returns -1 if a parse error occurred, otherwise 0.
    300  * It's the caller's responsibility to url_decode() the returned
    301  * user, pass and path.
    302  *
    303  * Sets type to url_t, each of the given char ** pointers to a
    304  * malloc(3)ed strings of the relevant section, and port to
    305  * the number given, or ftpport if ftp://, or httpport if http://.
    306  *
    307  * XXX: this is not totally RFC 3986 compliant; <path> will have the
    308  * leading `/' unless it's an ftp:// URL, as this makes things easier
    309  * for file:// and http:// URLs.  ftp:// URLs have the `/' between the
    310  * host and the URL-path removed, but any additional leading slashes
    311  * in the URL-path are retained (because they imply that we should
    312  * later do "CWD" with a null argument).
    313  *
    314  * Examples:
    315  *	 input URL			 output path
    316  *	 ---------			 -----------
    317  *	"http://host"			"/"
    318  *	"http://host/"			"/"
    319  *	"http://host/path"		"/path"
    320  *	"file://host/dir/file"		"dir/file"
    321  *	"ftp://host"			""
    322  *	"ftp://host/"			""
    323  *	"ftp://host//"			"/"
    324  *	"ftp://host/dir/file"		"dir/file"
    325  *	"ftp://host//dir/file"		"/dir/file"
    326  */
    327 static int
    328 parse_url(const char *url, const char *desc, url_t *utype,
    329 		char **uuser, char **pass, char **host, char **port,
    330 		in_port_t *portnum, char **path)
    331 {
    332 	const char	*origurl, *tport;
    333 	char		*cp, *ep, *thost;
    334 	size_t		 len;
    335 
    336 	if (url == NULL || desc == NULL || utype == NULL || uuser == NULL
    337 	    || pass == NULL || host == NULL || port == NULL || portnum == NULL
    338 	    || path == NULL)
    339 		errx(1, "parse_url: invoked with NULL argument!");
    340 	DPRINTF("parse_url: %s `%s'\n", desc, url);
    341 
    342 	origurl = url;
    343 	*utype = UNKNOWN_URL_T;
    344 	*uuser = *pass = *host = *port = *path = NULL;
    345 	*portnum = 0;
    346 	tport = NULL;
    347 
    348 	if (STRNEQUAL(url, HTTP_URL)) {
    349 		url += sizeof(HTTP_URL) - 1;
    350 		*utype = HTTP_URL_T;
    351 		*portnum = HTTP_PORT;
    352 		tport = httpport;
    353 	} else if (STRNEQUAL(url, FTP_URL)) {
    354 		url += sizeof(FTP_URL) - 1;
    355 		*utype = FTP_URL_T;
    356 		*portnum = FTP_PORT;
    357 		tport = ftpport;
    358 	} else if (STRNEQUAL(url, FILE_URL)) {
    359 		url += sizeof(FILE_URL) - 1;
    360 		*utype = FILE_URL_T;
    361 #ifdef WITH_SSL
    362 	} else if (STRNEQUAL(url, HTTPS_URL)) {
    363 		url += sizeof(HTTPS_URL) - 1;
    364 		*utype = HTTPS_URL_T;
    365 		*portnum = HTTPS_PORT;
    366 		tport = httpsport;
    367 #endif
    368 	} else {
    369 		warnx("Invalid %s `%s'", desc, url);
    370  cleanup_parse_url:
    371 		FREEPTR(*uuser);
    372 		if (*pass != NULL)
    373 			memset(*pass, 0, strlen(*pass));
    374 		FREEPTR(*pass);
    375 		FREEPTR(*host);
    376 		FREEPTR(*port);
    377 		FREEPTR(*path);
    378 		return (-1);
    379 	}
    380 
    381 	if (*url == '\0')
    382 		return (0);
    383 
    384 			/* find [user[:pass]@]host[:port] */
    385 	ep = strchr(url, '/');
    386 	if (ep == NULL)
    387 		thost = ftp_strdup(url);
    388 	else {
    389 		len = ep - url;
    390 		thost = (char *)ftp_malloc(len + 1);
    391 		(void)strlcpy(thost, url, len + 1);
    392 		if (*utype == FTP_URL_T)	/* skip first / for ftp URLs */
    393 			ep++;
    394 		*path = ftp_strdup(ep);
    395 	}
    396 
    397 	cp = strchr(thost, '@');	/* look for user[:pass]@ in URLs */
    398 	if (cp != NULL) {
    399 		if (*utype == FTP_URL_T)
    400 			anonftp = 0;	/* disable anonftp */
    401 		*uuser = thost;
    402 		*cp = '\0';
    403 		thost = ftp_strdup(cp + 1);
    404 		cp = strchr(*uuser, ':');
    405 		if (cp != NULL) {
    406 			*cp = '\0';
    407 			*pass = ftp_strdup(cp + 1);
    408 		}
    409 		url_decode(*uuser);
    410 		if (*pass)
    411 			url_decode(*pass);
    412 	}
    413 
    414 #ifdef INET6
    415 			/*
    416 			 * Check if thost is an encoded IPv6 address, as per
    417 			 * RFC 3986:
    418 			 *	`[' ipv6-address ']'
    419 			 */
    420 	if (*thost == '[') {
    421 		cp = thost + 1;
    422 		if ((ep = strchr(cp, ']')) == NULL ||
    423 		    (ep[1] != '\0' && ep[1] != ':')) {
    424 			warnx("Invalid address `%s' in %s `%s'",
    425 			    thost, desc, origurl);
    426 			goto cleanup_parse_url;
    427 		}
    428 		len = ep - cp;		/* change `[xyz]' -> `xyz' */
    429 		memmove(thost, thost + 1, len);
    430 		thost[len] = '\0';
    431 		if (! isipv6addr(thost)) {
    432 			warnx("Invalid IPv6 address `%s' in %s `%s'",
    433 			    thost, desc, origurl);
    434 			goto cleanup_parse_url;
    435 		}
    436 		cp = ep + 1;
    437 		if (*cp == ':')
    438 			cp++;
    439 		else
    440 			cp = NULL;
    441 	} else
    442 #endif /* INET6 */
    443 		if ((cp = strchr(thost, ':')) != NULL)
    444 			*cp++ = '\0';
    445 	*host = thost;
    446 
    447 			/* look for [:port] */
    448 	if (cp != NULL) {
    449 		unsigned long	nport;
    450 
    451 		nport = strtoul(cp, &ep, 10);
    452 		if (*cp == '\0' || *ep != '\0' ||
    453 		    nport < 1 || nport > MAX_IN_PORT_T) {
    454 			warnx("Unknown port `%s' in %s `%s'",
    455 			    cp, desc, origurl);
    456 			goto cleanup_parse_url;
    457 		}
    458 		*portnum = nport;
    459 		tport = cp;
    460 	}
    461 
    462 	if (tport != NULL)
    463 		*port = ftp_strdup(tport);
    464 	if (*path == NULL) {
    465 		const char *emptypath = "/";
    466 		if (*utype == FTP_URL_T)	/* skip first / for ftp URLs */
    467 			emptypath++;
    468 		*path = ftp_strdup(emptypath);
    469 	}
    470 
    471 	DPRINTF("parse_url: user `%s' pass `%s' host %s port %s(%d) "
    472 	    "path `%s'\n",
    473 	    STRorNULL(*uuser), STRorNULL(*pass),
    474 	    STRorNULL(*host), STRorNULL(*port),
    475 	    *portnum ? *portnum : -1, STRorNULL(*path));
    476 
    477 	return (0);
    478 }
    479 
    480 sigjmp_buf	httpabort;
    481 
    482 /*
    483  * Retrieve URL, via a proxy if necessary, using HTTP.
    484  * If proxyenv is set, use that for the proxy, otherwise try ftp_proxy or
    485  * http_proxy/https_proxy as appropriate.
    486  * Supports HTTP redirects.
    487  * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
    488  * is still open (e.g, ftp xfer with trailing /)
    489  */
    490 static int
    491 fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
    492 {
    493 	struct addrinfo		hints, *res, *res0 = NULL;
    494 	int			error;
    495 	sigfunc volatile	oldintr;
    496 	sigfunc volatile	oldintp;
    497 	int volatile		s;
    498 	struct stat		sb;
    499 	int volatile		ischunked;
    500 	int volatile		isproxy;
    501 	int volatile		rval;
    502 	int volatile		hcode;
    503 	int			len;
    504 	size_t			flen;
    505 	static size_t		bufsize;
    506 	static char		*xferbuf;
    507 	const char		*cp, *token;
    508 	char			*ep;
    509 	char			buf[FTPBUFLEN];
    510 	const char		*errormsg;
    511 	char			*volatile savefile;
    512 	char			*volatile auth;
    513 	char			*volatile location;
    514 	char			*volatile message;
    515 	char			*uuser, *pass, *host, *port, *path;
    516 	char			*volatile decodedpath;
    517 	char			*puser, *ppass, *useragent;
    518 	off_t			hashbytes, rangestart, rangeend, entitylen;
    519 	int			(*volatile closefunc)(FILE *);
    520 	FETCH			*volatile fin;
    521 	FILE			*volatile fout;
    522 	time_t			mtime;
    523 	url_t			urltype;
    524 	in_port_t		portnum;
    525 #ifdef WITH_SSL
    526 	void			*ssl;
    527 #endif
    528 
    529 	DPRINTF("fetch_url: `%s' proxyenv `%s'\n", url, STRorNULL(proxyenv));
    530 
    531 	oldintr = oldintp = NULL;
    532 	closefunc = NULL;
    533 	fin = NULL;
    534 	fout = NULL;
    535 	s = -1;
    536 	savefile = NULL;
    537 	auth = location = message = NULL;
    538 	ischunked = isproxy = hcode = 0;
    539 	rval = 1;
    540 	uuser = pass = host = path = decodedpath = puser = ppass = NULL;
    541 
    542 	if (parse_url(url, "URL", &urltype, &uuser, &pass, &host, &port,
    543 	    &portnum, &path) == -1)
    544 		goto cleanup_fetch_url;
    545 
    546 	if (urltype == FILE_URL_T && ! EMPTYSTRING(host)
    547 	    && strcasecmp(host, "localhost") != 0) {
    548 		warnx("No support for non local file URL `%s'", url);
    549 		goto cleanup_fetch_url;
    550 	}
    551 
    552 	if (EMPTYSTRING(path)) {
    553 		if (urltype == FTP_URL_T) {
    554 			rval = fetch_ftp(url);
    555 			goto cleanup_fetch_url;
    556 		}
    557 		if (!IS_HTTP_TYPE(urltype) || outfile == NULL)  {
    558 			warnx("Invalid URL (no file after host) `%s'", url);
    559 			goto cleanup_fetch_url;
    560 		}
    561 	}
    562 
    563 	decodedpath = ftp_strdup(path);
    564 	url_decode(decodedpath);
    565 
    566 	if (outfile)
    567 		savefile = ftp_strdup(outfile);
    568 	else {
    569 		cp = strrchr(decodedpath, '/');		/* find savefile */
    570 		if (cp != NULL)
    571 			savefile = ftp_strdup(cp + 1);
    572 		else
    573 			savefile = ftp_strdup(decodedpath);
    574 	}
    575 	DPRINTF("fetch_url: savefile `%s'\n", savefile);
    576 	if (EMPTYSTRING(savefile)) {
    577 		if (urltype == FTP_URL_T) {
    578 			rval = fetch_ftp(url);
    579 			goto cleanup_fetch_url;
    580 		}
    581 		warnx("No file after directory (you must specify an "
    582 		    "output file) `%s'", url);
    583 		goto cleanup_fetch_url;
    584 	}
    585 
    586 	restart_point = 0;
    587 	filesize = -1;
    588 	rangestart = rangeend = entitylen = -1;
    589 	mtime = -1;
    590 	if (restartautofetch) {
    591 		if (strcmp(savefile, "-") != 0 && *savefile != '|' &&
    592 		    stat(savefile, &sb) == 0)
    593 			restart_point = sb.st_size;
    594 	}
    595 	if (urltype == FILE_URL_T) {		/* file:// URLs */
    596 		direction = "copied";
    597 		fin = fetch_open(decodedpath, "r");
    598 		if (fin == NULL) {
    599 			warn("Can't open `%s'", decodedpath);
    600 			goto cleanup_fetch_url;
    601 		}
    602 		if (fstat(fetch_fileno(fin), &sb) == 0) {
    603 			mtime = sb.st_mtime;
    604 			filesize = sb.st_size;
    605 		}
    606 		if (restart_point) {
    607 			if (lseek(fetch_fileno(fin), restart_point, SEEK_SET) < 0) {
    608 				warn("Can't seek to restart `%s'",
    609 				    decodedpath);
    610 				goto cleanup_fetch_url;
    611 			}
    612 		}
    613 		if (verbose) {
    614 			fprintf(ttyout, "Copying %s", decodedpath);
    615 			if (restart_point)
    616 				fprintf(ttyout, " (restarting at " LLF ")",
    617 				    (LLT)restart_point);
    618 			fputs("\n", ttyout);
    619 		}
    620 		if (0 == rcvbuf_size) {
    621 			rcvbuf_size = 8 * 1024; /* XXX */
    622 		}
    623 	} else {				/* ftp:// or http:// URLs */
    624 		const char *leading;
    625 		int hasleading;
    626 
    627 		if (proxyenv == NULL) {
    628 #ifdef WITH_SSL
    629 			if (urltype == HTTPS_URL_T)
    630 				proxyenv = getoptionvalue("https_proxy");
    631 #endif
    632 			if (proxyenv == NULL && IS_HTTP_TYPE(urltype))
    633 				proxyenv = getoptionvalue("http_proxy");
    634 			else if (urltype == FTP_URL_T)
    635 				proxyenv = getoptionvalue("ftp_proxy");
    636 		}
    637 		direction = "retrieved";
    638 		if (! EMPTYSTRING(proxyenv)) {			/* use proxy */
    639 			url_t purltype;
    640 			char *phost, *ppath;
    641 			char *pport, *no_proxy;
    642 			in_port_t pportnum;
    643 
    644 			isproxy = 1;
    645 
    646 				/* check URL against list of no_proxied sites */
    647 			no_proxy = getoptionvalue("no_proxy");
    648 			if (! EMPTYSTRING(no_proxy)) {
    649 				char *np, *np_copy, *np_iter;
    650 				unsigned long np_port;
    651 				size_t hlen, plen;
    652 
    653 				np_iter = np_copy = ftp_strdup(no_proxy);
    654 				hlen = strlen(host);
    655 				while ((cp = strsep(&np_iter, " ,")) != NULL) {
    656 					if (*cp == '\0')
    657 						continue;
    658 					if ((np = strrchr(cp, ':')) != NULL) {
    659 						*np++ =  '\0';
    660 						np_port = strtoul(np, &ep, 10);
    661 						if (*np == '\0' || *ep != '\0')
    662 							continue;
    663 						if (np_port != portnum)
    664 							continue;
    665 					}
    666 					plen = strlen(cp);
    667 					if (hlen < plen)
    668 						continue;
    669 					if (strncasecmp(host + hlen - plen,
    670 					    cp, plen) == 0) {
    671 						isproxy = 0;
    672 						break;
    673 					}
    674 				}
    675 				FREEPTR(np_copy);
    676 				if (isproxy == 0 && urltype == FTP_URL_T) {
    677 					rval = fetch_ftp(url);
    678 					goto cleanup_fetch_url;
    679 				}
    680 			}
    681 
    682 			if (isproxy) {
    683 				if (restart_point) {
    684 					warnx("Can't restart via proxy URL `%s'",
    685 					    proxyenv);
    686 					goto cleanup_fetch_url;
    687 				}
    688 				if (parse_url(proxyenv, "proxy URL", &purltype,
    689 				    &puser, &ppass, &phost, &pport, &pportnum,
    690 				    &ppath) == -1)
    691 					goto cleanup_fetch_url;
    692 
    693 				if ((!IS_HTTP_TYPE(purltype)
    694 				     && purltype != FTP_URL_T) ||
    695 				    EMPTYSTRING(phost) ||
    696 				    (! EMPTYSTRING(ppath)
    697 				     && strcmp(ppath, "/") != 0)) {
    698 					warnx("Malformed proxy URL `%s'",
    699 					    proxyenv);
    700 					FREEPTR(phost);
    701 					FREEPTR(pport);
    702 					FREEPTR(ppath);
    703 					goto cleanup_fetch_url;
    704 				}
    705 				if (isipv6addr(host) &&
    706 				    strchr(host, '%') != NULL) {
    707 					warnx(
    708 "Scoped address notation `%s' disallowed via web proxy",
    709 					    host);
    710 					FREEPTR(phost);
    711 					FREEPTR(pport);
    712 					FREEPTR(ppath);
    713 					goto cleanup_fetch_url;
    714 				}
    715 
    716 				FREEPTR(host);
    717 				host = phost;
    718 				FREEPTR(port);
    719 				port = pport;
    720 				FREEPTR(path);
    721 				path = ftp_strdup(url);
    722 				FREEPTR(ppath);
    723 				urltype = purltype;
    724 			}
    725 		} /* ! EMPTYSTRING(proxyenv) */
    726 
    727 		memset(&hints, 0, sizeof(hints));
    728 		hints.ai_flags = 0;
    729 		hints.ai_family = family;
    730 		hints.ai_socktype = SOCK_STREAM;
    731 		hints.ai_protocol = 0;
    732 		error = getaddrinfo(host, port, &hints, &res0);
    733 		if (error) {
    734 			warnx("Can't LOOKUP `%s:%s': %s", host, port,
    735 			    (error == EAI_SYSTEM) ? strerror(errno)
    736 						  : gai_strerror(error));
    737 			goto cleanup_fetch_url;
    738 		}
    739 		if (res0->ai_canonname)
    740 			host = res0->ai_canonname;
    741 
    742 		s = -1;
    743 #ifdef WITH_SSL
    744 		ssl = NULL;
    745 #endif
    746 		for (res = res0; res; res = res->ai_next) {
    747 			char	hname[NI_MAXHOST], sname[NI_MAXSERV];
    748 
    749 			ai_unmapped(res);
    750 			if (getnameinfo(res->ai_addr, res->ai_addrlen,
    751 			    hname, sizeof(hname), sname, sizeof(sname),
    752 			    NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
    753 				strlcpy(hname, "?", sizeof(hname));
    754 				strlcpy(sname, "?", sizeof(sname));
    755 			}
    756 
    757 			if (verbose && res0->ai_next) {
    758 				fprintf(ttyout, "Trying %s:%s ...\n",
    759 				    hname, sname);
    760 			}
    761 
    762 			s = socket(res->ai_family, SOCK_STREAM,
    763 			    res->ai_protocol);
    764 			if (s < 0) {
    765 				warn(
    766 				    "Can't create socket for connection to "
    767 				    "`%s:%s'", hname, sname);
    768 				continue;
    769 			}
    770 
    771 			if (ftp_connect(s, res->ai_addr, res->ai_addrlen,
    772 			    verbose || !res->ai_next) < 0) {
    773 				close(s);
    774 				s = -1;
    775 				continue;
    776 			}
    777 
    778 #ifdef WITH_SSL
    779 			if (urltype == HTTPS_URL_T) {
    780 				if ((ssl = fetch_start_ssl(s)) == NULL) {
    781 					close(s);
    782 					s = -1;
    783 					continue;
    784 				}
    785 			}
    786 #endif
    787 
    788 			/* success */
    789 			break;
    790 		}
    791 
    792 		if (s < 0) {
    793 			warnx("Can't connect to `%s:%s'", host, port);
    794 			goto cleanup_fetch_url;
    795 		}
    796 
    797 		fin = fetch_fdopen(s, "r+");
    798 		fetch_set_ssl(fin, ssl);
    799 
    800 		/*
    801 		 * Construct and send the request.
    802 		 */
    803 		if (verbose)
    804 			fprintf(ttyout, "Requesting %s\n", url);
    805 		leading = "  (";
    806 		hasleading = 0;
    807 		if (isproxy) {
    808 			if (verbose) {
    809 				fprintf(ttyout, "%svia %s:%s", leading,
    810 				    host, port);
    811 				leading = ", ";
    812 				hasleading++;
    813 			}
    814 			fetch_printf(fin, "GET %s HTTP/1.0\r\n", path);
    815 			if (flushcache)
    816 				fetch_printf(fin, "Pragma: no-cache\r\n");
    817 		} else {
    818 			fetch_printf(fin, "GET %s HTTP/1.1\r\n", path);
    819 			if (strchr(host, ':')) {
    820 				char *h, *p;
    821 
    822 				/*
    823 				 * strip off IPv6 scope identifier, since it is
    824 				 * local to the node
    825 				 */
    826 				h = ftp_strdup(host);
    827 				if (isipv6addr(h) &&
    828 				    (p = strchr(h, '%')) != NULL) {
    829 					*p = '\0';
    830 				}
    831 				fetch_printf(fin, "Host: [%s]", h);
    832 				free(h);
    833 			} else
    834 				fetch_printf(fin, "Host: %s", host);
    835 #ifdef WITH_SSL
    836 			if ((urltype == HTTP_URL_T && portnum != HTTP_PORT) ||
    837 			    (urltype == HTTPS_URL_T && portnum != HTTPS_PORT))
    838 #else
    839 			if (portnum != HTTP_PORT)
    840 #endif
    841 				fetch_printf(fin, ":%u", portnum);
    842 			fetch_printf(fin, "\r\n");
    843 			fetch_printf(fin, "Accept: */*\r\n");
    844 			fetch_printf(fin, "Connection: close\r\n");
    845 			if (restart_point) {
    846 				fputs(leading, ttyout);
    847 				fprintf(ttyout, "Range: bytes=" LLF "-\r\n",
    848 				    (LLT)restart_point);
    849 				fprintf(ttyout, "restarting at " LLF,
    850 				    (LLT)restart_point);
    851 				leading = ", ";
    852 				hasleading++;
    853 			}
    854 			if (flushcache)
    855 				fetch_printf(fin, "Cache-Control: no-cache\r\n");
    856 		}
    857 		if ((useragent=getenv("FTPUSERAGENT")) != NULL) {
    858 			fetch_printf(fin, "User-Agent: %s\r\n", useragent);
    859 		} else {
    860 			fetch_printf(fin, "User-Agent: %s/%s\r\n",
    861 			    FTP_PRODUCT, FTP_VERSION);
    862 		}
    863 		if (wwwauth) {
    864 			if (verbose) {
    865 				fprintf(ttyout, "%swith authorization",
    866 				    leading);
    867 				leading = ", ";
    868 				hasleading++;
    869 			}
    870 			fetch_printf(fin, "Authorization: %s\r\n", wwwauth);
    871 		}
    872 		if (proxyauth) {
    873 			if (verbose) {
    874 				fprintf(ttyout,
    875 				    "%swith proxy authorization", leading);
    876 				leading = ", ";
    877 				hasleading++;
    878 			}
    879 			fetch_printf(fin, "Proxy-Authorization: %s\r\n", proxyauth);
    880 		}
    881 		if (verbose && hasleading)
    882 			fputs(")\n", ttyout);
    883 		fetch_printf(fin, "\r\n");
    884 		if (fetch_flush(fin) == EOF) {
    885 			warn("Writing HTTP request");
    886 			goto cleanup_fetch_url;
    887 		}
    888 
    889 				/* Read the response */
    890 		len = fetch_getline(fin, buf, sizeof(buf), &errormsg);
    891 		if (len < 0) {
    892 			if (*errormsg == '\n')
    893 				errormsg++;
    894 			warnx("Receiving HTTP reply: %s", errormsg);
    895 			goto cleanup_fetch_url;
    896 		}
    897 		while (len > 0 && (ISLWS(buf[len-1])))
    898 			buf[--len] = '\0';
    899 		DPRINTF("fetch_url: received `%s'\n", buf);
    900 
    901 				/* Determine HTTP response code */
    902 		cp = strchr(buf, ' ');
    903 		if (cp == NULL)
    904 			goto improper;
    905 		else
    906 			cp++;
    907 		hcode = strtol(cp, &ep, 10);
    908 		if (*ep != '\0' && !isspace((unsigned char)*ep))
    909 			goto improper;
    910 		message = ftp_strdup(cp);
    911 
    912 				/* Read the rest of the header. */
    913 		while (1) {
    914 			len = fetch_getline(fin, buf, sizeof(buf), &errormsg);
    915 			if (len < 0) {
    916 				if (*errormsg == '\n')
    917 					errormsg++;
    918 				warnx("Receiving HTTP reply: %s", errormsg);
    919 				goto cleanup_fetch_url;
    920 			}
    921 			while (len > 0 && (ISLWS(buf[len-1])))
    922 				buf[--len] = '\0';
    923 			if (len == 0)
    924 				break;
    925 			DPRINTF("fetch_url: received `%s'\n", buf);
    926 
    927 		/*
    928 		 * Look for some headers
    929 		 */
    930 
    931 			cp = buf;
    932 
    933 			if (match_token(&cp, "Content-Length:")) {
    934 				filesize = STRTOLL(cp, &ep, 10);
    935 				if (filesize < 0 || *ep != '\0')
    936 					goto improper;
    937 				DPRINTF("fetch_url: parsed len as: " LLF "\n",
    938 				    (LLT)filesize);
    939 
    940 			} else if (match_token(&cp, "Content-Range:")) {
    941 				if (! match_token(&cp, "bytes"))
    942 					goto improper;
    943 
    944 				if (*cp == '*')
    945 					cp++;
    946 				else {
    947 					rangestart = STRTOLL(cp, &ep, 10);
    948 					if (rangestart < 0 || *ep != '-')
    949 						goto improper;
    950 					cp = ep + 1;
    951 					rangeend = STRTOLL(cp, &ep, 10);
    952 					if (rangeend < 0 || rangeend < rangestart)
    953 						goto improper;
    954 					cp = ep;
    955 				}
    956 				if (*cp != '/')
    957 					goto improper;
    958 				cp++;
    959 				if (*cp == '*')
    960 					cp++;
    961 				else {
    962 					entitylen = STRTOLL(cp, &ep, 10);
    963 					if (entitylen < 0)
    964 						goto improper;
    965 					cp = ep;
    966 				}
    967 				if (*cp != '\0')
    968 					goto improper;
    969 
    970 #ifndef NO_DEBUG
    971 				if (ftp_debug) {
    972 					fprintf(ttyout, "parsed range as: ");
    973 					if (rangestart == -1)
    974 						fprintf(ttyout, "*");
    975 					else
    976 						fprintf(ttyout, LLF "-" LLF,
    977 						    (LLT)rangestart,
    978 						    (LLT)rangeend);
    979 					fprintf(ttyout, "/" LLF "\n", (LLT)entitylen);
    980 				}
    981 #endif
    982 				if (! restart_point) {
    983 					warnx(
    984 				    "Received unexpected Content-Range header");
    985 					goto cleanup_fetch_url;
    986 				}
    987 
    988 			} else if (match_token(&cp, "Last-Modified:")) {
    989 				struct tm parsed;
    990 				const char *t;
    991 
    992 				memset(&parsed, 0, sizeof(parsed));
    993 				t = parse_rfc2616time(&parsed, cp);
    994 				if (t != NULL) {
    995 					parsed.tm_isdst = -1;
    996 					if (*t == '\0')
    997 						mtime = timegm(&parsed);
    998 #ifndef NO_DEBUG
    999 					if (ftp_debug && mtime != -1) {
   1000 						fprintf(ttyout,
   1001 						    "parsed time as: %s",
   1002 						rfc2822time(localtime(&mtime)));
   1003 					}
   1004 #endif
   1005 				}
   1006 
   1007 			} else if (match_token(&cp, "Location:")) {
   1008 				location = ftp_strdup(cp);
   1009 				DPRINTF("fetch_url: parsed location as `%s'\n",
   1010 				    cp);
   1011 
   1012 			} else if (match_token(&cp, "Transfer-Encoding:")) {
   1013 				if (match_token(&cp, "binary")) {
   1014 					warnx(
   1015 			"Bogus transfer encoding `binary' (fetching anyway)");
   1016 					continue;
   1017 				}
   1018 				if (! (token = match_token(&cp, "chunked"))) {
   1019 					warnx(
   1020 				    "Unsupported transfer encoding `%s'",
   1021 					    token);
   1022 					goto cleanup_fetch_url;
   1023 				}
   1024 				ischunked++;
   1025 				DPRINTF("fetch_url: using chunked encoding\n");
   1026 
   1027 			} else if (match_token(&cp, "Proxy-Authenticate:")
   1028 				|| match_token(&cp, "WWW-Authenticate:")) {
   1029 				if (! (token = match_token(&cp, "Basic"))) {
   1030 					DPRINTF(
   1031 			"fetch_url: skipping unknown auth scheme `%s'\n",
   1032 						    token);
   1033 					continue;
   1034 				}
   1035 				FREEPTR(auth);
   1036 				auth = ftp_strdup(token);
   1037 				DPRINTF("fetch_url: parsed auth as `%s'\n", cp);
   1038 			}
   1039 
   1040 		}
   1041 				/* finished parsing header */
   1042 
   1043 		switch (hcode) {
   1044 		case 200:
   1045 			break;
   1046 		case 206:
   1047 			if (! restart_point) {
   1048 				warnx("Not expecting partial content header");
   1049 				goto cleanup_fetch_url;
   1050 			}
   1051 			break;
   1052 		case 300:
   1053 		case 301:
   1054 		case 302:
   1055 		case 303:
   1056 		case 305:
   1057 		case 307:
   1058 			if (EMPTYSTRING(location)) {
   1059 				warnx(
   1060 				"No redirection Location provided by server");
   1061 				goto cleanup_fetch_url;
   1062 			}
   1063 			if (redirect_loop++ > 5) {
   1064 				warnx("Too many redirections requested");
   1065 				goto cleanup_fetch_url;
   1066 			}
   1067 			if (hcode == 305) {
   1068 				if (verbose)
   1069 					fprintf(ttyout, "Redirected via %s\n",
   1070 					    location);
   1071 				rval = fetch_url(url, location,
   1072 				    proxyauth, wwwauth);
   1073 			} else {
   1074 				if (verbose)
   1075 					fprintf(ttyout, "Redirected to %s\n",
   1076 					    location);
   1077 				rval = go_fetch(location);
   1078 			}
   1079 			goto cleanup_fetch_url;
   1080 #ifndef NO_AUTH
   1081 		case 401:
   1082 		case 407:
   1083 		    {
   1084 			char **authp;
   1085 			char *auser, *apass;
   1086 
   1087 			if (hcode == 401) {
   1088 				authp = &wwwauth;
   1089 				auser = uuser;
   1090 				apass = pass;
   1091 			} else {
   1092 				authp = &proxyauth;
   1093 				auser = puser;
   1094 				apass = ppass;
   1095 			}
   1096 			if (verbose || *authp == NULL ||
   1097 			    auser == NULL || apass == NULL)
   1098 				fprintf(ttyout, "%s\n", message);
   1099 			if (EMPTYSTRING(auth)) {
   1100 				warnx(
   1101 			    "No authentication challenge provided by server");
   1102 				goto cleanup_fetch_url;
   1103 			}
   1104 			if (*authp != NULL) {
   1105 				char reply[10];
   1106 
   1107 				fprintf(ttyout,
   1108 				    "Authorization failed. Retry (y/n)? ");
   1109 				if (get_line(stdin, reply, sizeof(reply), NULL)
   1110 				    < 0) {
   1111 					goto cleanup_fetch_url;
   1112 				}
   1113 				if (tolower((unsigned char)reply[0]) != 'y')
   1114 					goto cleanup_fetch_url;
   1115 				auser = NULL;
   1116 				apass = NULL;
   1117 			}
   1118 			if (auth_url(auth, authp, auser, apass) == 0) {
   1119 				rval = fetch_url(url, proxyenv,
   1120 				    proxyauth, wwwauth);
   1121 				memset(*authp, 0, strlen(*authp));
   1122 				FREEPTR(*authp);
   1123 			}
   1124 			goto cleanup_fetch_url;
   1125 		    }
   1126 #endif
   1127 		default:
   1128 			if (message)
   1129 				warnx("Error retrieving file `%s'", message);
   1130 			else
   1131 				warnx("Unknown error retrieving file");
   1132 			goto cleanup_fetch_url;
   1133 		}
   1134 	}		/* end of ftp:// or http:// specific setup */
   1135 
   1136 			/* Open the output file. */
   1137 	if (strcmp(savefile, "-") == 0) {
   1138 		fout = stdout;
   1139 	} else if (*savefile == '|') {
   1140 		oldintp = xsignal(SIGPIPE, SIG_IGN);
   1141 		fout = popen(savefile + 1, "w");
   1142 		if (fout == NULL) {
   1143 			warn("Can't execute `%s'", savefile + 1);
   1144 			goto cleanup_fetch_url;
   1145 		}
   1146 		closefunc = pclose;
   1147 	} else {
   1148 		if ((rangeend != -1 && rangeend <= restart_point) ||
   1149 		    (rangestart == -1 && filesize != -1 && filesize <= restart_point)) {
   1150 			/* already done */
   1151 			if (verbose)
   1152 				fprintf(ttyout, "already done\n");
   1153 			rval = 0;
   1154 			goto cleanup_fetch_url;
   1155 		}
   1156 		if (restart_point && rangestart != -1) {
   1157 			if (entitylen != -1)
   1158 				filesize = entitylen;
   1159 			if (rangestart != restart_point) {
   1160 				warnx(
   1161 				    "Size of `%s' differs from save file `%s'",
   1162 				    url, savefile);
   1163 				goto cleanup_fetch_url;
   1164 			}
   1165 			fout = fopen(savefile, "a");
   1166 		} else
   1167 			fout = fopen(savefile, "w");
   1168 		if (fout == NULL) {
   1169 			warn("Can't open `%s'", savefile);
   1170 			goto cleanup_fetch_url;
   1171 		}
   1172 		closefunc = fclose;
   1173 	}
   1174 
   1175 			/* Trap signals */
   1176 	if (sigsetjmp(httpabort, 1))
   1177 		goto cleanup_fetch_url;
   1178 	(void)xsignal(SIGQUIT, psummary);
   1179 	oldintr = xsignal(SIGINT, aborthttp);
   1180 
   1181 	assert(rcvbuf_size > 0);
   1182 	if ((size_t)rcvbuf_size > bufsize) {
   1183 		if (xferbuf)
   1184 			(void)free(xferbuf);
   1185 		bufsize = rcvbuf_size;
   1186 		xferbuf = ftp_malloc(bufsize);
   1187 	}
   1188 
   1189 	bytes = 0;
   1190 	hashbytes = mark;
   1191 	progressmeter(-1);
   1192 
   1193 			/* Finally, suck down the file. */
   1194 	do {
   1195 		long chunksize;
   1196 		short lastchunk;
   1197 
   1198 		chunksize = 0;
   1199 		lastchunk = 0;
   1200 					/* read chunk-size */
   1201 		if (ischunked) {
   1202 			if (fetch_getln(xferbuf, bufsize, fin) == NULL) {
   1203 				warnx("Unexpected EOF reading chunk-size");
   1204 				goto cleanup_fetch_url;
   1205 			}
   1206 			errno = 0;
   1207 			chunksize = strtol(xferbuf, &ep, 16);
   1208 			if (ep == xferbuf) {
   1209 				warnx("Invalid chunk-size");
   1210 				goto cleanup_fetch_url;
   1211 			}
   1212 			if (errno == ERANGE || chunksize < 0) {
   1213 				errno = ERANGE;
   1214 				warn("Chunk-size `%.*s'",
   1215 				    (int)(ep-xferbuf), xferbuf);
   1216 				goto cleanup_fetch_url;
   1217 			}
   1218 
   1219 				/*
   1220 				 * XXX:	Work around bug in Apache 1.3.9 and
   1221 				 *	1.3.11, which incorrectly put trailing
   1222 				 *	space after the chunk-size.
   1223 				 */
   1224 			while (*ep == ' ')
   1225 				ep++;
   1226 
   1227 					/* skip [ chunk-ext ] */
   1228 			if (*ep == ';') {
   1229 				while (*ep && *ep != '\r')
   1230 					ep++;
   1231 			}
   1232 
   1233 			if (strcmp(ep, "\r\n") != 0) {
   1234 				warnx("Unexpected data following chunk-size");
   1235 				goto cleanup_fetch_url;
   1236 			}
   1237 			DPRINTF("fetch_url: got chunk-size of " LLF "\n",
   1238 			    (LLT)chunksize);
   1239 			if (chunksize == 0) {
   1240 				lastchunk = 1;
   1241 				goto chunkdone;
   1242 			}
   1243 		}
   1244 					/* transfer file or chunk */
   1245 		while (1) {
   1246 			struct timeval then, now, td;
   1247 			off_t bufrem;
   1248 
   1249 			if (rate_get)
   1250 				(void)gettimeofday(&then, NULL);
   1251 			bufrem = rate_get ? rate_get : (off_t)bufsize;
   1252 			if (ischunked)
   1253 				bufrem = MIN(chunksize, bufrem);
   1254 			while (bufrem > 0) {
   1255 				flen = fetch_read(xferbuf, sizeof(char),
   1256 				    MIN((off_t)bufsize, bufrem), fin);
   1257 				if (flen <= 0)
   1258 					goto chunkdone;
   1259 				bytes += flen;
   1260 				bufrem -= flen;
   1261 				if (fwrite(xferbuf, sizeof(char), flen, fout)
   1262 				    != flen) {
   1263 					warn("Writing `%s'", savefile);
   1264 					goto cleanup_fetch_url;
   1265 				}
   1266 				if (hash && !progress) {
   1267 					while (bytes >= hashbytes) {
   1268 						(void)putc('#', ttyout);
   1269 						hashbytes += mark;
   1270 					}
   1271 					(void)fflush(ttyout);
   1272 				}
   1273 				if (ischunked) {
   1274 					chunksize -= flen;
   1275 					if (chunksize <= 0)
   1276 						break;
   1277 				}
   1278 			}
   1279 			if (rate_get) {
   1280 				while (1) {
   1281 					(void)gettimeofday(&now, NULL);
   1282 					timersub(&now, &then, &td);
   1283 					if (td.tv_sec > 0)
   1284 						break;
   1285 					usleep(1000000 - td.tv_usec);
   1286 				}
   1287 			}
   1288 			if (ischunked && chunksize <= 0)
   1289 				break;
   1290 		}
   1291 					/* read CRLF after chunk*/
   1292  chunkdone:
   1293 		if (ischunked) {
   1294 			if (fetch_getln(xferbuf, bufsize, fin) == NULL) {
   1295 				warnx("Unexpected EOF reading chunk CRLF");
   1296 				goto cleanup_fetch_url;
   1297 			}
   1298 			if (strcmp(xferbuf, "\r\n") != 0) {
   1299 				warnx("Unexpected data following chunk");
   1300 				goto cleanup_fetch_url;
   1301 			}
   1302 			if (lastchunk)
   1303 				break;
   1304 		}
   1305 	} while (ischunked);
   1306 
   1307 /* XXX: deal with optional trailer & CRLF here? */
   1308 
   1309 	if (hash && !progress && bytes > 0) {
   1310 		if (bytes < mark)
   1311 			(void)putc('#', ttyout);
   1312 		(void)putc('\n', ttyout);
   1313 	}
   1314 	if (fetch_error(fin)) {
   1315 		warn("Reading file");
   1316 		goto cleanup_fetch_url;
   1317 	}
   1318 	progressmeter(1);
   1319 	(void)fflush(fout);
   1320 	if (closefunc == fclose && mtime != -1) {
   1321 		struct timeval tval[2];
   1322 
   1323 		(void)gettimeofday(&tval[0], NULL);
   1324 		tval[1].tv_sec = mtime;
   1325 		tval[1].tv_usec = 0;
   1326 		(*closefunc)(fout);
   1327 		fout = NULL;
   1328 
   1329 		if (utimes(savefile, tval) == -1) {
   1330 			fprintf(ttyout,
   1331 			    "Can't change modification time to %s",
   1332 			    rfc2822time(localtime(&mtime)));
   1333 		}
   1334 	}
   1335 	if (bytes > 0)
   1336 		ptransfer(0);
   1337 	bytes = 0;
   1338 
   1339 	rval = 0;
   1340 	goto cleanup_fetch_url;
   1341 
   1342  improper:
   1343 	warnx("Improper response from `%s:%s'", host, port);
   1344 
   1345  cleanup_fetch_url:
   1346 	if (oldintr)
   1347 		(void)xsignal(SIGINT, oldintr);
   1348 	if (oldintp)
   1349 		(void)xsignal(SIGPIPE, oldintp);
   1350 	if (fin != NULL)
   1351 		fetch_close(fin);
   1352 	else if (s != -1)
   1353 		close(s);
   1354 	if (closefunc != NULL && fout != NULL)
   1355 		(*closefunc)(fout);
   1356 	if (res0)
   1357 		freeaddrinfo(res0);
   1358 	FREEPTR(savefile);
   1359 	FREEPTR(uuser);
   1360 	if (pass != NULL)
   1361 		memset(pass, 0, strlen(pass));
   1362 	FREEPTR(pass);
   1363 	FREEPTR(host);
   1364 	FREEPTR(port);
   1365 	FREEPTR(path);
   1366 	FREEPTR(decodedpath);
   1367 	FREEPTR(puser);
   1368 	if (ppass != NULL)
   1369 		memset(ppass, 0, strlen(ppass));
   1370 	FREEPTR(ppass);
   1371 	FREEPTR(auth);
   1372 	FREEPTR(location);
   1373 	FREEPTR(message);
   1374 	return (rval);
   1375 }
   1376 
   1377 /*
   1378  * Abort a HTTP retrieval
   1379  */
   1380 static void
   1381 aborthttp(int notused)
   1382 {
   1383 	char msgbuf[100];
   1384 	size_t len;
   1385 
   1386 	sigint_raised = 1;
   1387 	alarmtimer(0);
   1388 	len = strlcpy(msgbuf, "\nHTTP fetch aborted.\n", sizeof(msgbuf));
   1389 	write(fileno(ttyout), msgbuf, len);
   1390 	siglongjmp(httpabort, 1);
   1391 }
   1392 
   1393 /*
   1394  * Retrieve ftp URL or classic ftp argument using FTP.
   1395  * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
   1396  * is still open (e.g, ftp xfer with trailing /)
   1397  */
   1398 static int
   1399 fetch_ftp(const char *url)
   1400 {
   1401 	char		*cp, *xargv[5], rempath[MAXPATHLEN];
   1402 	char		*host, *path, *dir, *file, *uuser, *pass;
   1403 	char		*port;
   1404 	char		 cmdbuf[MAXPATHLEN];
   1405 	char		 dirbuf[4];
   1406 	int		 dirhasglob, filehasglob, rval, transtype, xargc;
   1407 	int		 oanonftp, oautologin;
   1408 	in_port_t	 portnum;
   1409 	url_t		 urltype;
   1410 
   1411 	DPRINTF("fetch_ftp: `%s'\n", url);
   1412 	host = path = dir = file = uuser = pass = NULL;
   1413 	port = NULL;
   1414 	rval = 1;
   1415 	transtype = TYPE_I;
   1416 
   1417 	if (STRNEQUAL(url, FTP_URL)) {
   1418 		if ((parse_url(url, "URL", &urltype, &uuser, &pass,
   1419 		    &host, &port, &portnum, &path) == -1) ||
   1420 		    (uuser != NULL && *uuser == '\0') ||
   1421 		    EMPTYSTRING(host)) {
   1422 			warnx("Invalid URL `%s'", url);
   1423 			goto cleanup_fetch_ftp;
   1424 		}
   1425 		/*
   1426 		 * Note: Don't url_decode(path) here.  We need to keep the
   1427 		 * distinction between "/" and "%2F" until later.
   1428 		 */
   1429 
   1430 					/* check for trailing ';type=[aid]' */
   1431 		if (! EMPTYSTRING(path) && (cp = strrchr(path, ';')) != NULL) {
   1432 			if (strcasecmp(cp, ";type=a") == 0)
   1433 				transtype = TYPE_A;
   1434 			else if (strcasecmp(cp, ";type=i") == 0)
   1435 				transtype = TYPE_I;
   1436 			else if (strcasecmp(cp, ";type=d") == 0) {
   1437 				warnx(
   1438 			    "Directory listing via a URL is not supported");
   1439 				goto cleanup_fetch_ftp;
   1440 			} else {
   1441 				warnx("Invalid suffix `%s' in URL `%s'", cp,
   1442 				    url);
   1443 				goto cleanup_fetch_ftp;
   1444 			}
   1445 			*cp = 0;
   1446 		}
   1447 	} else {			/* classic style `[user@]host:[file]' */
   1448 		urltype = CLASSIC_URL_T;
   1449 		host = ftp_strdup(url);
   1450 		cp = strchr(host, '@');
   1451 		if (cp != NULL) {
   1452 			*cp = '\0';
   1453 			uuser = host;
   1454 			anonftp = 0;	/* disable anonftp */
   1455 			host = ftp_strdup(cp + 1);
   1456 		}
   1457 		cp = strchr(host, ':');
   1458 		if (cp != NULL) {
   1459 			*cp = '\0';
   1460 			path = ftp_strdup(cp + 1);
   1461 		}
   1462 	}
   1463 	if (EMPTYSTRING(host))
   1464 		goto cleanup_fetch_ftp;
   1465 
   1466 			/* Extract the file and (if present) directory name. */
   1467 	dir = path;
   1468 	if (! EMPTYSTRING(dir)) {
   1469 		/*
   1470 		 * If we are dealing with classic `[user@]host:[path]' syntax,
   1471 		 * then a path of the form `/file' (resulting from input of the
   1472 		 * form `host:/file') means that we should do "CWD /" before
   1473 		 * retrieving the file.  So we set dir="/" and file="file".
   1474 		 *
   1475 		 * But if we are dealing with URLs like `ftp://host/path' then
   1476 		 * a path of the form `/file' (resulting from a URL of the form
   1477 		 * `ftp://host//file') means that we should do `CWD ' (with an
   1478 		 * empty argument) before retrieving the file.  So we set
   1479 		 * dir="" and file="file".
   1480 		 *
   1481 		 * If the path does not contain / at all, we set dir=NULL.
   1482 		 * (We get a path without any slashes if we are dealing with
   1483 		 * classic `[user@]host:[file]' or URL `ftp://host/file'.)
   1484 		 *
   1485 		 * In all other cases, we set dir to a string that does not
   1486 		 * include the final '/' that separates the dir part from the
   1487 		 * file part of the path.  (This will be the empty string if
   1488 		 * and only if we are dealing with a path of the form `/file'
   1489 		 * resulting from an URL of the form `ftp://host//file'.)
   1490 		 */
   1491 		cp = strrchr(dir, '/');
   1492 		if (cp == dir && urltype == CLASSIC_URL_T) {
   1493 			file = cp + 1;
   1494 			(void)strlcpy(dirbuf, "/", sizeof(dirbuf));
   1495 			dir = dirbuf;
   1496 		} else if (cp != NULL) {
   1497 			*cp++ = '\0';
   1498 			file = cp;
   1499 		} else {
   1500 			file = dir;
   1501 			dir = NULL;
   1502 		}
   1503 	} else
   1504 		dir = NULL;
   1505 	if (urltype == FTP_URL_T && file != NULL) {
   1506 		url_decode(file);
   1507 		/* but still don't url_decode(dir) */
   1508 	}
   1509 	DPRINTF("fetch_ftp: user `%s' pass `%s' host %s port %s "
   1510 	    "path `%s' dir `%s' file `%s'\n",
   1511 	    STRorNULL(uuser), STRorNULL(pass),
   1512 	    STRorNULL(host), STRorNULL(port),
   1513 	    STRorNULL(path), STRorNULL(dir), STRorNULL(file));
   1514 
   1515 	dirhasglob = filehasglob = 0;
   1516 	if (doglob && urltype == CLASSIC_URL_T) {
   1517 		if (! EMPTYSTRING(dir) && strpbrk(dir, "*?[]{}") != NULL)
   1518 			dirhasglob = 1;
   1519 		if (! EMPTYSTRING(file) && strpbrk(file, "*?[]{}") != NULL)
   1520 			filehasglob = 1;
   1521 	}
   1522 
   1523 			/* Set up the connection */
   1524 	oanonftp = anonftp;
   1525 	if (connected)
   1526 		disconnect(0, NULL);
   1527 	anonftp = oanonftp;
   1528 	(void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf));
   1529 	xargv[0] = cmdbuf;
   1530 	xargv[1] = host;
   1531 	xargv[2] = NULL;
   1532 	xargc = 2;
   1533 	if (port) {
   1534 		xargv[2] = port;
   1535 		xargv[3] = NULL;
   1536 		xargc = 3;
   1537 	}
   1538 	oautologin = autologin;
   1539 		/* don't autologin in setpeer(), use ftp_login() below */
   1540 	autologin = 0;
   1541 	setpeer(xargc, xargv);
   1542 	autologin = oautologin;
   1543 	if ((connected == 0) ||
   1544 	    (connected == 1 && !ftp_login(host, uuser, pass))) {
   1545 		warnx("Can't connect or login to host `%s:%s'",
   1546 			host, port ? port : "?");
   1547 		goto cleanup_fetch_ftp;
   1548 	}
   1549 
   1550 	switch (transtype) {
   1551 	case TYPE_A:
   1552 		setascii(1, xargv);
   1553 		break;
   1554 	case TYPE_I:
   1555 		setbinary(1, xargv);
   1556 		break;
   1557 	default:
   1558 		errx(1, "fetch_ftp: unknown transfer type %d", transtype);
   1559 	}
   1560 
   1561 		/*
   1562 		 * Change directories, if necessary.
   1563 		 *
   1564 		 * Note: don't use EMPTYSTRING(dir) below, because
   1565 		 * dir=="" means something different from dir==NULL.
   1566 		 */
   1567 	if (dir != NULL && !dirhasglob) {
   1568 		char *nextpart;
   1569 
   1570 		/*
   1571 		 * If we are dealing with a classic `[user@]host:[path]'
   1572 		 * (urltype is CLASSIC_URL_T) then we have a raw directory
   1573 		 * name (not encoded in any way) and we can change
   1574 		 * directories in one step.
   1575 		 *
   1576 		 * If we are dealing with an `ftp://host/path' URL
   1577 		 * (urltype is FTP_URL_T), then RFC 3986 says we need to
   1578 		 * send a separate CWD command for each unescaped "/"
   1579 		 * in the path, and we have to interpret %hex escaping
   1580 		 * *after* we find the slashes.  It's possible to get
   1581 		 * empty components here, (from multiple adjacent
   1582 		 * slashes in the path) and RFC 3986 says that we should
   1583 		 * still do `CWD ' (with a null argument) in such cases.
   1584 		 *
   1585 		 * Many ftp servers don't support `CWD ', so if there's an
   1586 		 * error performing that command, bail out with a descriptive
   1587 		 * message.
   1588 		 *
   1589 		 * Examples:
   1590 		 *
   1591 		 * host:			dir="", urltype=CLASSIC_URL_T
   1592 		 *		logged in (to default directory)
   1593 		 * host:file			dir=NULL, urltype=CLASSIC_URL_T
   1594 		 *		"RETR file"
   1595 		 * host:dir/			dir="dir", urltype=CLASSIC_URL_T
   1596 		 *		"CWD dir", logged in
   1597 		 * ftp://host/			dir="", urltype=FTP_URL_T
   1598 		 *		logged in (to default directory)
   1599 		 * ftp://host/dir/		dir="dir", urltype=FTP_URL_T
   1600 		 *		"CWD dir", logged in
   1601 		 * ftp://host/file		dir=NULL, urltype=FTP_URL_T
   1602 		 *		"RETR file"
   1603 		 * ftp://host//file		dir="", urltype=FTP_URL_T
   1604 		 *		"CWD ", "RETR file"
   1605 		 * host:/file			dir="/", urltype=CLASSIC_URL_T
   1606 		 *		"CWD /", "RETR file"
   1607 		 * ftp://host///file		dir="/", urltype=FTP_URL_T
   1608 		 *		"CWD ", "CWD ", "RETR file"
   1609 		 * ftp://host/%2F/file		dir="%2F", urltype=FTP_URL_T
   1610 		 *		"CWD /", "RETR file"
   1611 		 * ftp://host/foo/file		dir="foo", urltype=FTP_URL_T
   1612 		 *		"CWD foo", "RETR file"
   1613 		 * ftp://host/foo/bar/file	dir="foo/bar"
   1614 		 *		"CWD foo", "CWD bar", "RETR file"
   1615 		 * ftp://host//foo/bar/file	dir="/foo/bar"
   1616 		 *		"CWD ", "CWD foo", "CWD bar", "RETR file"
   1617 		 * ftp://host/foo//bar/file	dir="foo//bar"
   1618 		 *		"CWD foo", "CWD ", "CWD bar", "RETR file"
   1619 		 * ftp://host/%2F/foo/bar/file	dir="%2F/foo/bar"
   1620 		 *		"CWD /", "CWD foo", "CWD bar", "RETR file"
   1621 		 * ftp://host/%2Ffoo/bar/file	dir="%2Ffoo/bar"
   1622 		 *		"CWD /foo", "CWD bar", "RETR file"
   1623 		 * ftp://host/%2Ffoo%2Fbar/file	dir="%2Ffoo%2Fbar"
   1624 		 *		"CWD /foo/bar", "RETR file"
   1625 		 * ftp://host/%2Ffoo%2Fbar%2Ffile	dir=NULL
   1626 		 *		"RETR /foo/bar/file"
   1627 		 *
   1628 		 * Note that we don't need `dir' after this point.
   1629 		 */
   1630 		do {
   1631 			if (urltype == FTP_URL_T) {
   1632 				nextpart = strchr(dir, '/');
   1633 				if (nextpart) {
   1634 					*nextpart = '\0';
   1635 					nextpart++;
   1636 				}
   1637 				url_decode(dir);
   1638 			} else
   1639 				nextpart = NULL;
   1640 			DPRINTF("fetch_ftp: dir `%s', nextpart `%s'\n",
   1641 			    STRorNULL(dir), STRorNULL(nextpart));
   1642 			if (urltype == FTP_URL_T || *dir != '\0') {
   1643 				(void)strlcpy(cmdbuf, "cd", sizeof(cmdbuf));
   1644 				xargv[0] = cmdbuf;
   1645 				xargv[1] = dir;
   1646 				xargv[2] = NULL;
   1647 				dirchange = 0;
   1648 				cd(2, xargv);
   1649 				if (! dirchange) {
   1650 					if (*dir == '\0' && code == 500)
   1651 						fprintf(stderr,
   1652 "\n"
   1653 "ftp: The `CWD ' command (without a directory), which is required by\n"
   1654 "     RFC 3986 to support the empty directory in the URL pathname (`//'),\n"
   1655 "     conflicts with the server's conformance to RFC 959.\n"
   1656 "     Try the same URL without the `//' in the URL pathname.\n"
   1657 "\n");
   1658 					goto cleanup_fetch_ftp;
   1659 				}
   1660 			}
   1661 			dir = nextpart;
   1662 		} while (dir != NULL);
   1663 	}
   1664 
   1665 	if (EMPTYSTRING(file)) {
   1666 		rval = -1;
   1667 		goto cleanup_fetch_ftp;
   1668 	}
   1669 
   1670 	if (dirhasglob) {
   1671 		(void)strlcpy(rempath, dir,	sizeof(rempath));
   1672 		(void)strlcat(rempath, "/",	sizeof(rempath));
   1673 		(void)strlcat(rempath, file,	sizeof(rempath));
   1674 		file = rempath;
   1675 	}
   1676 
   1677 			/* Fetch the file(s). */
   1678 	xargc = 2;
   1679 	(void)strlcpy(cmdbuf, "get", sizeof(cmdbuf));
   1680 	xargv[0] = cmdbuf;
   1681 	xargv[1] = file;
   1682 	xargv[2] = NULL;
   1683 	if (dirhasglob || filehasglob) {
   1684 		int ointeractive;
   1685 
   1686 		ointeractive = interactive;
   1687 		interactive = 0;
   1688 		if (restartautofetch)
   1689 			(void)strlcpy(cmdbuf, "mreget", sizeof(cmdbuf));
   1690 		else
   1691 			(void)strlcpy(cmdbuf, "mget", sizeof(cmdbuf));
   1692 		xargv[0] = cmdbuf;
   1693 		mget(xargc, xargv);
   1694 		interactive = ointeractive;
   1695 	} else {
   1696 		if (outfile == NULL) {
   1697 			cp = strrchr(file, '/');	/* find savefile */
   1698 			if (cp != NULL)
   1699 				outfile = cp + 1;
   1700 			else
   1701 				outfile = file;
   1702 		}
   1703 		xargv[2] = (char *)outfile;
   1704 		xargv[3] = NULL;
   1705 		xargc++;
   1706 		if (restartautofetch)
   1707 			reget(xargc, xargv);
   1708 		else
   1709 			get(xargc, xargv);
   1710 	}
   1711 
   1712 	if ((code / 100) == COMPLETE)
   1713 		rval = 0;
   1714 
   1715  cleanup_fetch_ftp:
   1716 	FREEPTR(port);
   1717 	FREEPTR(host);
   1718 	FREEPTR(path);
   1719 	FREEPTR(uuser);
   1720 	if (pass)
   1721 		memset(pass, 0, strlen(pass));
   1722 	FREEPTR(pass);
   1723 	return (rval);
   1724 }
   1725 
   1726 /*
   1727  * Retrieve the given file to outfile.
   1728  * Supports arguments of the form:
   1729  *	"host:path", "ftp://host/path"	if $ftpproxy, call fetch_url() else
   1730  *					call fetch_ftp()
   1731  *	"http://host/path"		call fetch_url() to use HTTP
   1732  *	"file:///path"			call fetch_url() to copy
   1733  *	"about:..."			print a message
   1734  *
   1735  * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
   1736  * is still open (e.g, ftp xfer with trailing /)
   1737  */
   1738 static int
   1739 go_fetch(const char *url)
   1740 {
   1741 	char *proxyenv;
   1742 	char *p;
   1743 
   1744 #ifndef NO_ABOUT
   1745 	/*
   1746 	 * Check for about:*
   1747 	 */
   1748 	if (STRNEQUAL(url, ABOUT_URL)) {
   1749 		url += sizeof(ABOUT_URL) -1;
   1750 		if (strcasecmp(url, "ftp") == 0 ||
   1751 		    strcasecmp(url, "tnftp") == 0) {
   1752 			fputs(
   1753 "This version of ftp has been enhanced by Luke Mewburn <lukem (at) NetBSD.org>\n"
   1754 "for the NetBSD project.  Execute `man ftp' for more details.\n", ttyout);
   1755 		} else if (strcasecmp(url, "lukem") == 0) {
   1756 			fputs(
   1757 "Luke Mewburn is the author of most of the enhancements in this ftp client.\n"
   1758 "Please email feedback to <lukem (at) NetBSD.org>.\n", ttyout);
   1759 		} else if (strcasecmp(url, "netbsd") == 0) {
   1760 			fputs(
   1761 "NetBSD is a freely available and redistributable UNIX-like operating system.\n"
   1762 "For more information, see http://www.NetBSD.org/\n", ttyout);
   1763 		} else if (strcasecmp(url, "version") == 0) {
   1764 			fprintf(ttyout, "Version: %s %s%s\n",
   1765 			    FTP_PRODUCT, FTP_VERSION,
   1766 #ifdef INET6
   1767 			    ""
   1768 #else
   1769 			    " (-IPv6)"
   1770 #endif
   1771 			);
   1772 		} else {
   1773 			fprintf(ttyout, "`%s' is an interesting topic.\n", url);
   1774 		}
   1775 		fputs("\n", ttyout);
   1776 		return (0);
   1777 	}
   1778 #endif
   1779 
   1780 	/*
   1781 	 * Check for file:// and http:// URLs.
   1782 	 */
   1783 	if (STRNEQUAL(url, HTTP_URL)
   1784 #ifdef WITH_SSL
   1785 	    || STRNEQUAL(url, HTTPS_URL)
   1786 #endif
   1787 	    || STRNEQUAL(url, FILE_URL))
   1788 		return (fetch_url(url, NULL, NULL, NULL));
   1789 
   1790 	/*
   1791 	 * If it contains "://" but does not begin with ftp://
   1792 	 * or something that was already handled, then it's
   1793 	 * unsupported.
   1794 	 *
   1795 	 * If it contains ":" but not "://" then we assume the
   1796 	 * part before the colon is a host name, not an URL scheme,
   1797 	 * so we don't try to match that here.
   1798 	 */
   1799 	if ((p = strstr(url, "://")) != NULL && ! STRNEQUAL(url, FTP_URL))
   1800 		errx(1, "Unsupported URL scheme `%.*s'", (int)(p - url), url);
   1801 
   1802 	/*
   1803 	 * Try FTP URL-style and host:file arguments next.
   1804 	 * If ftpproxy is set with an FTP URL, use fetch_url()
   1805 	 * Othewise, use fetch_ftp().
   1806 	 */
   1807 	proxyenv = getoptionvalue("ftp_proxy");
   1808 	if (!EMPTYSTRING(proxyenv) && STRNEQUAL(url, FTP_URL))
   1809 		return (fetch_url(url, NULL, NULL, NULL));
   1810 
   1811 	return (fetch_ftp(url));
   1812 }
   1813 
   1814 /*
   1815  * Retrieve multiple files from the command line,
   1816  * calling go_fetch() for each file.
   1817  *
   1818  * If an ftp path has a trailing "/", the path will be cd-ed into and
   1819  * the connection remains open, and the function will return -1
   1820  * (to indicate the connection is alive).
   1821  * If an error occurs the return value will be the offset+1 in
   1822  * argv[] of the file that caused a problem (i.e, argv[x]
   1823  * returns x+1)
   1824  * Otherwise, 0 is returned if all files retrieved successfully.
   1825  */
   1826 int
   1827 auto_fetch(int argc, char *argv[])
   1828 {
   1829 	volatile int	argpos, rval;
   1830 
   1831 	argpos = rval = 0;
   1832 
   1833 	if (sigsetjmp(toplevel, 1)) {
   1834 		if (connected)
   1835 			disconnect(0, NULL);
   1836 		if (rval > 0)
   1837 			rval = argpos + 1;
   1838 		return (rval);
   1839 	}
   1840 	(void)xsignal(SIGINT, intr);
   1841 	(void)xsignal(SIGPIPE, lostpeer);
   1842 
   1843 	/*
   1844 	 * Loop through as long as there's files to fetch.
   1845 	 */
   1846 	for (; (rval == 0) && (argpos < argc); argpos++) {
   1847 		if (strchr(argv[argpos], ':') == NULL)
   1848 			break;
   1849 		redirect_loop = 0;
   1850 		if (!anonftp)
   1851 			anonftp = 2;	/* Handle "automatic" transfers. */
   1852 		rval = go_fetch(argv[argpos]);
   1853 		if (outfile != NULL && strcmp(outfile, "-") != 0
   1854 		    && outfile[0] != '|')
   1855 			outfile = NULL;
   1856 		if (rval > 0)
   1857 			rval = argpos + 1;
   1858 	}
   1859 
   1860 	if (connected && rval != -1)
   1861 		disconnect(0, NULL);
   1862 	return (rval);
   1863 }
   1864 
   1865 
   1866 /*
   1867  * Upload multiple files from the command line.
   1868  *
   1869  * If an error occurs the return value will be the offset+1 in
   1870  * argv[] of the file that caused a problem (i.e, argv[x]
   1871  * returns x+1)
   1872  * Otherwise, 0 is returned if all files uploaded successfully.
   1873  */
   1874 int
   1875 auto_put(int argc, char **argv, const char *uploadserver)
   1876 {
   1877 	char	*uargv[4], *path, *pathsep;
   1878 	int	 uargc, rval, argpos;
   1879 	size_t	 len;
   1880 	char	 cmdbuf[MAX_C_NAME];
   1881 
   1882 	(void)strlcpy(cmdbuf, "mput", sizeof(cmdbuf));
   1883 	uargv[0] = cmdbuf;
   1884 	uargv[1] = argv[0];
   1885 	uargc = 2;
   1886 	uargv[2] = uargv[3] = NULL;
   1887 	pathsep = NULL;
   1888 	rval = 1;
   1889 
   1890 	DPRINTF("auto_put: target `%s'\n", uploadserver);
   1891 
   1892 	path = ftp_strdup(uploadserver);
   1893 	len = strlen(path);
   1894 	if (path[len - 1] != '/' && path[len - 1] != ':') {
   1895 			/*
   1896 			 * make sure we always pass a directory to auto_fetch
   1897 			 */
   1898 		if (argc > 1) {		/* more than one file to upload */
   1899 			len = strlen(uploadserver) + 2;	/* path + "/" + "\0" */
   1900 			free(path);
   1901 			path = (char *)ftp_malloc(len);
   1902 			(void)strlcpy(path, uploadserver, len);
   1903 			(void)strlcat(path, "/", len);
   1904 		} else {		/* single file to upload */
   1905 			(void)strlcpy(cmdbuf, "put", sizeof(cmdbuf));
   1906 			uargv[0] = cmdbuf;
   1907 			pathsep = strrchr(path, '/');
   1908 			if (pathsep == NULL) {
   1909 				pathsep = strrchr(path, ':');
   1910 				if (pathsep == NULL) {
   1911 					warnx("Invalid URL `%s'", path);
   1912 					goto cleanup_auto_put;
   1913 				}
   1914 				pathsep++;
   1915 				uargv[2] = ftp_strdup(pathsep);
   1916 				pathsep[0] = '/';
   1917 			} else
   1918 				uargv[2] = ftp_strdup(pathsep + 1);
   1919 			pathsep[1] = '\0';
   1920 			uargc++;
   1921 		}
   1922 	}
   1923 	DPRINTF("auto_put: URL `%s' argv[2] `%s'\n",
   1924 	    path, STRorNULL(uargv[2]));
   1925 
   1926 			/* connect and cwd */
   1927 	rval = auto_fetch(1, &path);
   1928 	if(rval >= 0)
   1929 		goto cleanup_auto_put;
   1930 
   1931 	rval = 0;
   1932 
   1933 			/* target filename provided; upload 1 file */
   1934 			/* XXX : is this the best way? */
   1935 	if (uargc == 3) {
   1936 		uargv[1] = argv[0];
   1937 		put(uargc, uargv);
   1938 		if ((code / 100) != COMPLETE)
   1939 			rval = 1;
   1940 	} else {	/* otherwise a target dir: upload all files to it */
   1941 		for(argpos = 0; argv[argpos] != NULL; argpos++) {
   1942 			uargv[1] = argv[argpos];
   1943 			mput(uargc, uargv);
   1944 			if ((code / 100) != COMPLETE) {
   1945 				rval = argpos + 1;
   1946 				break;
   1947 			}
   1948 		}
   1949 	}
   1950 
   1951  cleanup_auto_put:
   1952 	free(path);
   1953 	FREEPTR(uargv[2]);
   1954 	return (rval);
   1955 }
   1956