contrib/tnftp/src/fetch.c

   1 /*      $NetBSD: fetch.c,v 1.18 2009/11/15 10:12:37 lukem Exp $ */
   2 /*      from    NetBSD: fetch.c,v 1.191 2009/08/17 09:08:16 christos Exp        */
   3
   4 /*-
   5  * Copyright (c) 1997-2009 The NetBSD Foundation, Inc.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to The NetBSD Foundation
   9  * by Luke Mewburn.
  10  *
  11  * This code is derived from software contributed to The NetBSD Foundation
  12  * by Scott Aaron Bamford.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions
  16  * are met:
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #include "tnftp.h"
  37
  38 #if 0   /* tnftp */
  39
  40 #include <sys/cdefs.h>
  41 #ifndef lint
  42 __RCSID(" NetBSD: fetch.c,v 1.191 2009/08/17 09:08:16 christos Exp  ");
  43 #endif /* not lint */
  44
  45 /*
  46  * FTP User Program -- Command line file retrieval
  47  */
  48
  49 #include <sys/types.h>
  50 #include <sys/param.h>
  51 #include <sys/socket.h>
  52 #include <sys/stat.h>
  53 #include <sys/time.h>
  54
  55 #include <netinet/in.h>
  56
  57 #include <arpa/ftp.h>
  58 #include <arpa/inet.h>
  59
  60 #include <ctype.h>
  61 #include <err.h>
  62 #include <errno.h>
  63 #include <netdb.h>
  64 #include <fcntl.h>
  65 #include <stdio.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <unistd.h>
  69 #include <time.h>
  70
  71 #endif  /* tnftp */
  72
  73 #include "ftp_var.h"
  74 #include "version.h"
  75
  76 typedef enum {
  77         UNKNOWN_URL_T=-1,
  78         HTTP_URL_T,
  79         FTP_URL_T,
  80         FILE_URL_T,
  81         CLASSIC_URL_T
  82 } url_t;
  83
  84 void            aborthttp(int);
  85 #ifndef NO_AUTH
  86 static int      auth_url(const char *, char **, const char *, const char *);
  87 static void     base64_encode(const unsigned char *, size_t, unsigned char *);
  88 #endif
  89 static int      go_fetch(const char *);
  90 static int      fetch_ftp(const char *);
  91 static int      fetch_url(const char *, const char *, char *, char *);
  92 static const char *match_token(const char **, const char *);
  93 static int      parse_url(const char *, const char *, url_t *, char **,
  94                             char **, char **, char **, in_port_t *, char **);
  95 static void     url_decode(char *);
  96
  97 static int      redirect_loop;
  98
  99
 100 #define STRNEQUAL(a,b)  (strncasecmp((a), (b), sizeof((b))-1) == 0)
 101 #define ISLWS(x)        ((x)=='\r' || (x)=='\n' || (x)==' ' || (x)=='\t')
 102 #define SKIPLWS(x)      do { while (ISLWS((*x))) x++; } while (0)
 103
 104
 105 #define ABOUT_URL       "about:"        /* propaganda */
 106 #define FILE_URL        "file://"       /* file URL prefix */
 107 #define FTP_URL         "ftp://"        /* ftp URL prefix */
 108 #define HTTP_URL        "http://"       /* http URL prefix */
 109
 110
 111 /*
 112  * Determine if token is the next word in buf (case insensitive).
 113  * If so, advance buf past the token and any trailing LWS, and
 114  * return a pointer to the token (in buf).  Otherwise, return NULL.
 115  * token may be preceded by LWS.
 116  * token must be followed by LWS or NUL.  (I.e, don't partial match).
 117  */
 118 static const char *
 119 match_token(const char **buf, const char *token)
 120 {
 121         const char      *p, *orig;
 122         size_t          tlen;
 123
 124         tlen = strlen(token);
 125         p = *buf;
 126         SKIPLWS(p);
 127         orig = p;
 128         if (strncasecmp(p, token, tlen) != 0)
 129                 return NULL;
 130         p += tlen;
 131         if (*p != '\0' && !ISLWS(*p))
 132                 return NULL;
 133         SKIPLWS(p);
 134         orig = *buf;
 135         *buf = p;
 136         return orig;
 137 }
 138
 139 #ifndef NO_AUTH
 140 /*
 141  * Generate authorization response based on given authentication challenge.
 142  * Returns -1 if an error occurred, otherwise 0.
 143  * Sets response to a malloc(3)ed string; caller should free.
 144  */
 145 static int
 146 auth_url(const char *challenge, char **response, const char *guser,
 147         const char *gpass)
 148 {
 149         const char      *cp, *scheme, *errormsg;
 150         char            *ep, *clear, *realm;
 151         char             uuser[BUFSIZ], *gotpass;
 152         const char      *upass;
 153         int              rval;
 154         size_t           len, clen, rlen;
 155
 156         *response = NULL;
 157         clear = realm = NULL;
 158         rval = -1;
 159         cp = challenge;
 160         scheme = "Basic";       /* only support Basic authentication */
 161         gotpass = NULL;
 162
 163         DPRINTF("auth_url: challenge `%s'\n", challenge);
 164
 165         if (! match_token(&cp, scheme)) {
 166                 warnx("Unsupported authentication challenge `%s'",
 167                     challenge);
 168                 goto cleanup_auth_url;
 169         }
 170
 171 #define REALM "realm=\""
 172         if (STRNEQUAL(cp, REALM))
 173                 cp += sizeof(REALM) - 1;
 174         else {
 175                 warnx("Unsupported authentication challenge `%s'",
 176                     challenge);
 177                 goto cleanup_auth_url;
 178         }
 179 /* XXX: need to improve quoted-string parsing to support \ quoting, etc. */
 180         if ((ep = strchr(cp, '\"')) != NULL) {
 181                 len = ep - cp;
 182                 realm = (char *)ftp_malloc(len + 1);
 183                 (void)strlcpy(realm, cp, len + 1);
 184         } else {
 185                 warnx("Unsupported authentication challenge `%s'",
 186                     challenge);
 187                 goto cleanup_auth_url;
 188         }
 189
 190         fprintf(ttyout, "Username for `%s': ", realm);
 191         if (guser != NULL) {
 192                 (void)strlcpy(uuser, guser, sizeof(uuser));
 193                 fprintf(ttyout, "%s\n", uuser);
 194         } else {
 195                 (void)fflush(ttyout);
 196                 if (get_line(stdin, uuser, sizeof(uuser), &errormsg) < 0) {
 197                         warnx("%s; can't authenticate", errormsg);
 198                         goto cleanup_auth_url;
 199                 }
 200         }
 201         if (gpass != NULL)
 202                 upass = gpass;
 203         else {
 204                 gotpass = getpass("Password: ");
 205                 if (gotpass == NULL) {
 206                         warnx("Can't read password");
 207                         goto cleanup_auth_url;
 208                 }
 209                 upass = gotpass;
 210         }
 211
 212         clen = strlen(uuser) + strlen(upass) + 2;       /* user + ":" + pass + "\0" */
 213         clear = (char *)ftp_malloc(clen);
 214         (void)strlcpy(clear, uuser, clen);
 215         (void)strlcat(clear, ":", clen);
 216         (void)strlcat(clear, upass, clen);
 217         if (gotpass)
 218                 memset(gotpass, 0, strlen(gotpass));
 219
 220                                                 /* scheme + " " + enc + "\0" */
 221         rlen = strlen(scheme) + 1 + (clen + 2) * 4 / 3 + 1;
 222         *response = (char *)ftp_malloc(rlen);
 223         (void)strlcpy(*response, scheme, rlen);
 224         len = strlcat(*response, " ", rlen);
 225                         /* use  `clen - 1'  to not encode the trailing NUL */
 226         base64_encode((unsigned char *)clear, clen - 1,
 227             (unsigned char *)*response + len);
 228         memset(clear, 0, clen);
 229         rval = 0;
 230
 231  cleanup_auth_url:
 232         FREEPTR(clear);
 233         FREEPTR(realm);
 234         return (rval);
 235 }
 236
 237 /*
 238  * Encode len bytes starting at clear using base64 encoding into encoded,
 239  * which should be at least ((len + 2) * 4 / 3 + 1) in size.
 240  */
 241 static void
 242 base64_encode(const unsigned char *clear, size_t len, unsigned char *encoded)
 243 {
 244         static const unsigned char enc[] =
 245             "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 246         unsigned char   *cp;
 247         size_t   i;
 248
 249         cp = encoded;
 250         for (i = 0; i < len; i += 3) {
 251                 *(cp++) = enc[((clear[i + 0] >> 2))];
 252                 *(cp++) = enc[((clear[i + 0] << 4) & 0x30)
 253                             | ((clear[i + 1] >> 4) & 0x0f)];
 254                 *(cp++) = enc[((clear[i + 1] << 2) & 0x3c)
 255                             | ((clear[i + 2] >> 6) & 0x03)];
 256                 *(cp++) = enc[((clear[i + 2]     ) & 0x3f)];
 257         }
 258         *cp = '\0';
 259         while (i-- > len)
 260                 *(--cp) = '=';
 261 }
 262 #endif
 263
 264 /*
 265  * Decode %xx escapes in given string, `in-place'.
 266  */
 267 static void
 268 url_decode(char *url)
 269 {
 270         unsigned char *p, *q;
 271
 272         if (EMPTYSTRING(url))
 273                 return;
 274         p = q = (unsigned char *)url;
 275
 276 #define HEXTOINT(x) (x - (isdigit(x) ? '0' : (islower(x) ? 'a' : 'A') - 10))
 277         while (*p) {
 278                 if (p[0] == '%'
 279                     && p[1] && isxdigit((unsigned char)p[1])
 280                     && p[2] && isxdigit((unsigned char)p[2])) {
 281                         *q++ = HEXTOINT(p[1]) * 16 + HEXTOINT(p[2]);
 282                         p+=3;
 283                 } else
 284                         *q++ = *p++;
 285         }
 286         *q = '\0';
 287 }
 288
 289
 290 /*
 291  * Parse URL of form (per RFC3986):
 292  *      <type>://[<user>[:<password>]@]<host>[:<port>][/<path>]
 293  * Returns -1 if a parse error occurred, otherwise 0.
 294  * It's the caller's responsibility to url_decode() the returned
 295  * user, pass and path.
 296  *
 297  * Sets type to url_t, each of the given char ** pointers to a
 298  * malloc(3)ed strings of the relevant section, and port to
 299  * the number given, or ftpport if ftp://, or httpport if http://.
 300  *
 301  * XXX: this is not totally RFC3986 compliant; <path> will have the
 302  * leading `/' unless it's an ftp:// URL, as this makes things easier
 303  * for file:// and http:// URLs.  ftp:// URLs have the `/' between the
 304  * host and the URL-path removed, but any additional leading slashes
 305  * in the URL-path are retained (because they imply that we should
 306  * later do "CWD" with a null argument).
 307  *
 308  * Examples:
 309  *       input URL                       output path
 310  *       ---------                       -----------
 311  *      "http://host"                   "/"
 312  *      "http://host/"                  "/"
 313  *      "http://host/path"              "/path"
 314  *      "file://host/dir/file"          "dir/file"
 315  *      "ftp://host"                    ""
 316  *      "ftp://host/"                   ""
 317  *      "ftp://host//"                  "/"
 318  *      "ftp://host/dir/file"           "dir/file"
 319  *      "ftp://host//dir/file"          "/dir/file"
 320  */
 321 static int
 322 parse_url(const char *url, const char *desc, url_t *utype,
 323                 char **uuser, char **pass, char **host, char **port,
 324                 in_port_t *portnum, char **path)
 325 {
 326         const char      *origurl, *tport;
 327         char            *cp, *ep, *thost;
 328         size_t           len;
 329
 330         if (url == NULL || desc == NULL || utype == NULL || uuser == NULL
 331             || pass == NULL || host == NULL || port == NULL || portnum == NULL
 332             || path == NULL)
 333                 errx(1, "parse_url: invoked with NULL argument!");
 334         DPRINTF("parse_url: %s `%s'\n", desc, url);
 335
 336         origurl = url;
 337         *utype = UNKNOWN_URL_T;
 338         *uuser = *pass = *host = *port = *path = NULL;
 339         *portnum = 0;
 340         tport = NULL;
 341
 342         if (STRNEQUAL(url, HTTP_URL)) {
 343                 url += sizeof(HTTP_URL) - 1;
 344                 *utype = HTTP_URL_T;
 345                 *portnum = HTTP_PORT;
 346                 tport = httpport;
 347         } else if (STRNEQUAL(url, FTP_URL)) {
 348                 url += sizeof(FTP_URL) - 1;
 349                 *utype = FTP_URL_T;
 350                 *portnum = FTP_PORT;
 351                 tport = ftpport;
 352         } else if (STRNEQUAL(url, FILE_URL)) {
 353                 url += sizeof(FILE_URL) - 1;
 354                 *utype = FILE_URL_T;
 355         } else {
 356                 warnx("Invalid %s `%s'", desc, url);
 357  cleanup_parse_url:
 358                 FREEPTR(*uuser);
 359                 if (*pass != NULL)
 360                         memset(*pass, 0, strlen(*pass));
 361                 FREEPTR(*pass);
 362                 FREEPTR(*host);
 363                 FREEPTR(*port);
 364                 FREEPTR(*path);
 365                 return (-1);
 366         }
 367
 368         if (*url == '\0')
 369                 return (0);
 370
 371                         /* find [user[:pass]@]host[:port] */
 372         ep = strchr(url, '/');
 373         if (ep == NULL)
 374                 thost = ftp_strdup(url);
 375         else {
 376                 len = ep - url;
 377                 thost = (char *)ftp_malloc(len + 1);
 378                 (void)strlcpy(thost, url, len + 1);
 379                 if (*utype == FTP_URL_T)        /* skip first / for ftp URLs */
 380                         ep++;
 381                 *path = ftp_strdup(ep);
 382         }
 383
 384         cp = strchr(thost, '@');        /* look for user[:pass]@ in URLs */
 385         if (cp != NULL) {
 386                 if (*utype == FTP_URL_T)
 387                         anonftp = 0;    /* disable anonftp */
 388                 *uuser = thost;
 389                 *cp = '\0';
 390                 thost = ftp_strdup(cp + 1);
 391                 cp = strchr(*uuser, ':');
 392                 if (cp != NULL) {
 393                         *cp = '\0';
 394                         *pass = ftp_strdup(cp + 1);
 395                 }
 396                 url_decode(*uuser);
 397                 if (*pass)
 398                         url_decode(*pass);
 399         }
 400
 401 #ifdef INET6
 402                         /*
 403                          * Check if thost is an encoded IPv6 address, as per
 404                          * RFC3986:
 405                          *      `[' ipv6-address ']'
 406                          */
 407         if (*thost == '[') {
 408                 cp = thost + 1;
 409                 if ((ep = strchr(cp, ']')) == NULL ||
 410                     (ep[1] != '\0' && ep[1] != ':')) {
 411                         warnx("Invalid address `%s' in %s `%s'",
 412                             thost, desc, origurl);
 413                         goto cleanup_parse_url;
 414                 }
 415                 len = ep - cp;          /* change `[xyz]' -> `xyz' */
 416                 memmove(thost, thost + 1, len);
 417                 thost[len] = '\0';
 418                 if (! isipv6addr(thost)) {
 419                         warnx("Invalid IPv6 address `%s' in %s `%s'",
 420                             thost, desc, origurl);
 421                         goto cleanup_parse_url;
 422                 }
 423                 cp = ep + 1;
 424                 if (*cp == ':')
 425                         cp++;
 426                 else
 427                         cp = NULL;
 428         } else
 429 #endif /* INET6 */
 430                 if ((cp = strchr(thost, ':')) != NULL)
 431                         *cp++ = '\0';
 432         *host = thost;
 433
 434                         /* look for [:port] */
 435         if (cp != NULL) {
 436                 unsigned long   nport;
 437
 438                 nport = strtoul(cp, &ep, 10);
 439                 if (*cp == '\0' || *ep != '\0' ||
 440                     nport < 1 || nport > MAX_IN_PORT_T) {
 441                         warnx("Unknown port `%s' in %s `%s'",
 442                             cp, desc, origurl);
 443                         goto cleanup_parse_url;
 444                 }
 445                 *portnum = nport;
 446                 tport = cp;
 447         }
 448
 449         if (tport != NULL)
 450                 *port = ftp_strdup(tport);
 451         if (*path == NULL) {
 452                 const char *emptypath = "/";
 453                 if (*utype == FTP_URL_T)        /* skip first / for ftp URLs */
 454                         emptypath++;
 455                 *path = ftp_strdup(emptypath);
 456         }
 457
 458         DPRINTF("parse_url: user `%s' pass `%s' host %s port %s(%d) "
 459             "path `%s'\n",
 460             STRorNULL(*uuser), STRorNULL(*pass),
 461             STRorNULL(*host), STRorNULL(*port),
 462             *portnum ? *portnum : -1, STRorNULL(*path));
 463
 464         return (0);
 465 }
 466
 467 sigjmp_buf      httpabort;
 468
 469 /*
 470  * Retrieve URL, via a proxy if necessary, using HTTP.
 471  * If proxyenv is set, use that for the proxy, otherwise try ftp_proxy or
 472  * http_proxy as appropriate.
 473  * Supports HTTP redirects.
 474  * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
 475  * is still open (e.g, ftp xfer with trailing /)
 476  */
 477 static int
 478 fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
 479 {
 480         struct addrinfo         hints, *res, *res0 = NULL;
 481         int                     error;
 482         sigfunc volatile        oldintr;
 483         sigfunc volatile        oldintp;
 484         int volatile            s;
 485         struct stat             sb;
 486         int volatile            ischunked;
 487         int volatile            isproxy;
 488         int volatile            rval;
 489         int volatile            hcode;
 490         int                     len;
 491         size_t                  flen;
 492         static size_t           bufsize;
 493         static char             *xferbuf;
 494         const char              *cp, *token;
 495         char                    *ep;
 496         char                    buf[FTPBUFLEN];
 497         const char              *errormsg;
 498         char                    *volatile savefile;
 499         char                    *volatile auth;
 500         char                    *volatile location;
 501         char                    *volatile message;
 502         char                    *uuser, *pass, *host, *port, *path;
 503         char                    *volatile decodedpath;
 504         char                    *puser, *ppass, *useragent;
 505         off_t                   hashbytes, rangestart, rangeend, entitylen;
 506         int                     (*volatile closefunc)(FILE *);
 507         FILE                    *volatile fin;
 508         FILE                    *volatile fout;
 509         time_t                  mtime;
 510         url_t                   urltype;
 511         in_port_t               portnum;
 512
 513         DPRINTF("fetch_url: `%s' proxyenv `%s'\n", url, STRorNULL(proxyenv));
 514
 515         oldintr = oldintp = NULL;
 516         closefunc = NULL;
 517         fin = fout = NULL;
 518         s = -1;
 519         savefile = NULL;
 520         auth = location = message = NULL;
 521         ischunked = isproxy = hcode = 0;
 522         rval = 1;
 523         uuser = pass = host = path = decodedpath = puser = ppass = NULL;
 524
 525         if (parse_url(url, "URL", &urltype, &uuser, &pass, &host, &port,
 526             &portnum, &path) == -1)
 527                 goto cleanup_fetch_url;
 528
 529         if (urltype == FILE_URL_T && ! EMPTYSTRING(host)
 530             && strcasecmp(host, "localhost") != 0) {
 531                 warnx("No support for non local file URL `%s'", url);
 532                 goto cleanup_fetch_url;
 533         }
 534
 535         if (EMPTYSTRING(path)) {
 536                 if (urltype == FTP_URL_T) {
 537                         rval = fetch_ftp(url);
 538                         goto cleanup_fetch_url;
 539                 }
 540                 if (urltype != HTTP_URL_T || outfile == NULL)  {
 541                         warnx("Invalid URL (no file after host) `%s'", url);
 542                         goto cleanup_fetch_url;
 543                 }
 544         }
 545
 546         decodedpath = ftp_strdup(path);
 547         url_decode(decodedpath);
 548
 549         if (outfile)
 550                 savefile = outfile;
 551         else {
 552                 cp = strrchr(decodedpath, '/');         /* find savefile */
 553                 if (cp != NULL)
 554                         savefile = ftp_strdup(cp + 1);
 555                 else
 556                         savefile = ftp_strdup(decodedpath);
 557         }
 558         DPRINTF("fetch_url: savefile `%s'\n", savefile);
 559         if (EMPTYSTRING(savefile)) {
 560                 if (urltype == FTP_URL_T) {
 561                         rval = fetch_ftp(url);
 562                         goto cleanup_fetch_url;
 563                 }
 564                 warnx("No file after directory (you must specify an "
 565                     "output file) `%s'", url);
 566                 goto cleanup_fetch_url;
 567         }
 568
 569         restart_point = 0;
 570         filesize = -1;
 571         rangestart = rangeend = entitylen = -1;
 572         mtime = -1;
 573         if (restartautofetch) {
 574                 if (stat(savefile, &sb) == 0)
 575                         restart_point = sb.st_size;
 576         }
 577         if (urltype == FILE_URL_T) {            /* file:// URLs */
 578                 direction = "copied";
 579                 fin = fopen(decodedpath, "r");
 580                 if (fin == NULL) {
 581                         warn("Can't open `%s'", decodedpath);
 582                         goto cleanup_fetch_url;
 583                 }
 584                 if (fstat(fileno(fin), &sb) == 0) {
 585                         mtime = sb.st_mtime;
 586                         filesize = sb.st_size;
 587                 }
 588                 if (restart_point) {
 589                         if (lseek(fileno(fin), restart_point, SEEK_SET) < 0) {
 590                                 warn("Can't seek to restart `%s'",
 591                                     decodedpath);
 592                                 goto cleanup_fetch_url;
 593                         }
 594                 }
 595                 if (verbose) {
 596                         fprintf(ttyout, "Copying %s", decodedpath);
 597                         if (restart_point)
 598                                 fprintf(ttyout, " (restarting at " LLF ")",
 599                                     (LLT)restart_point);
 600                         fputs("\n", ttyout);
 601                 }
 602         } else {                                /* ftp:// or http:// URLs */
 603                 const char *leading;
 604                 int hasleading;
 605
 606                 if (proxyenv == NULL) {
 607                         if (urltype == HTTP_URL_T)
 608                                 proxyenv = getoptionvalue("http_proxy");
 609                         else if (urltype == FTP_URL_T)
 610                                 proxyenv = getoptionvalue("ftp_proxy");
 611                 }
 612                 direction = "retrieved";
 613                 if (! EMPTYSTRING(proxyenv)) {                  /* use proxy */
 614                         url_t purltype;
 615                         char *phost, *ppath;
 616                         char *pport, *no_proxy;
 617                         in_port_t pportnum;
 618
 619                         isproxy = 1;
 620
 621                                 /* check URL against list of no_proxied sites */
 622                         no_proxy = getoptionvalue("no_proxy");
 623                         if (! EMPTYSTRING(no_proxy)) {
 624                                 char *np, *np_copy, *np_iter;
 625                                 unsigned long np_port;
 626                                 size_t hlen, plen;
 627
 628                                 np_iter = np_copy = ftp_strdup(no_proxy);
 629                                 hlen = strlen(host);
 630                                 while ((cp = strsep(&np_iter, " ,")) != NULL) {
 631                                         if (*cp == '\0')
 632                                                 continue;
 633                                         if ((np = strrchr(cp, ':')) != NULL) {
 634                                                 *np++ =  '\0';
 635                                                 np_port = strtoul(np, &ep, 10);
 636                                                 if (*np == '\0' || *ep != '\0')
 637                                                         continue;
 638                                                 if (np_port != portnum)
 639                                                         continue;
 640                                         }
 641                                         plen = strlen(cp);
 642                                         if (hlen < plen)
 643                                                 continue;
 644                                         if (strncasecmp(host + hlen - plen,
 645                                             cp, plen) == 0) {
 646                                                 isproxy = 0;
 647                                                 break;
 648                                         }
 649                                 }
 650                                 FREEPTR(np_copy);
 651                                 if (isproxy == 0 && urltype == FTP_URL_T) {
 652                                         rval = fetch_ftp(url);
 653                                         goto cleanup_fetch_url;
 654                                 }
 655                         }
 656
 657                         if (isproxy) {
 658                                 if (restart_point) {
 659                                         warnx("Can't restart via proxy URL `%s'",
 660                                             proxyenv);
 661                                         goto cleanup_fetch_url;
 662                                 }
 663                                 if (parse_url(proxyenv, "proxy URL", &purltype,
 664                                     &puser, &ppass, &phost, &pport, &pportnum,
 665                                     &ppath) == -1)
 666                                         goto cleanup_fetch_url;
 667
 668                                 if ((purltype != HTTP_URL_T
 669                                      && purltype != FTP_URL_T) ||
 670                                     EMPTYSTRING(phost) ||
 671                                     (! EMPTYSTRING(ppath)
 672                                      && strcmp(ppath, "/") != 0)) {
 673                                         warnx("Malformed proxy URL `%s'",
 674                                             proxyenv);
 675                                         FREEPTR(phost);
 676                                         FREEPTR(pport);
 677                                         FREEPTR(ppath);
 678                                         goto cleanup_fetch_url;
 679                                 }
 680                                 if (isipv6addr(host) &&
 681                                     strchr(host, '%') != NULL) {
 682                                         warnx(
 683 "Scoped address notation `%s' disallowed via web proxy",
 684                                             host);
 685                                         FREEPTR(phost);
 686                                         FREEPTR(pport);
 687                                         FREEPTR(ppath);
 688                                         goto cleanup_fetch_url;
 689                                 }
 690
 691                                 FREEPTR(host);
 692                                 host = phost;
 693                                 FREEPTR(port);
 694                                 port = pport;
 695                                 FREEPTR(path);
 696                                 path = ftp_strdup(url);
 697                                 FREEPTR(ppath);
 698                         }
 699                 } /* ! EMPTYSTRING(proxyenv) */
 700
 701                 memset(&hints, 0, sizeof(hints));
 702                 hints.ai_flags = 0;
 703                 hints.ai_family = family;
 704                 hints.ai_socktype = SOCK_STREAM;
 705                 hints.ai_protocol = 0;
 706                 error = getaddrinfo(host, port, &hints, &res0);
 707                 if (error) {
 708                         warnx("Can't lookup `%s:%s': %s", host, port,
 709                             (error == EAI_SYSTEM) ? strerror(errno)
 710                                                   : gai_strerror(error));
 711                         goto cleanup_fetch_url;
 712                 }
 713                 if (res0->ai_canonname)
 714                         host = res0->ai_canonname;
 715
 716                 s = -1;
 717                 for (res = res0; res; res = res->ai_next) {
 718                         char    hname[NI_MAXHOST], sname[NI_MAXSERV];
 719
 720                         ai_unmapped(res);
 721                         if (getnameinfo(res->ai_addr, res->ai_addrlen,
 722                             hname, sizeof(hname), sname, sizeof(sname),
 723                             NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
 724                                 strlcpy(hname, "?", sizeof(hname));
 725                                 strlcpy(sname, "?", sizeof(sname));
 726                         }
 727
 728                         if (verbose && res0->ai_next) {
 729                                 fprintf(ttyout, "Trying %s:%s ...\n",
 730                                     hname, sname);
 731                         }
 732
 733                         s = socket(res->ai_family, SOCK_STREAM,
 734                             res->ai_protocol);
 735                         if (s < 0) {
 736                                 warn(
 737                                     "Can't create socket for connection to "
 738                                     "`%s:%s'", hname, sname);
 739                                 continue;
 740                         }
 741
 742                         if (ftp_connect(s, res->ai_addr, res->ai_addrlen) < 0) {
 743                                 close(s);
 744                                 s = -1;
 745                                 continue;
 746                         }
 747
 748                         /* success */
 749                         break;
 750                 }
 751
 752                 if (s < 0) {
 753                         warnx("Can't connect to `%s:%s'", host, port);
 754                         goto cleanup_fetch_url;
 755                 }
 756
 757                 fin = fdopen(s, "r+");
 758                 /*
 759                  * Construct and send the request.
 760                  */
 761                 if (verbose)
 762                         fprintf(ttyout, "Requesting %s\n", url);
 763                 leading = "  (";
 764                 hasleading = 0;
 765                 if (isproxy) {
 766                         if (verbose) {
 767                                 fprintf(ttyout, "%svia %s:%s", leading,
 768                                     host, port);
 769                                 leading = ", ";
 770                                 hasleading++;
 771                         }
 772                         fprintf(fin, "GET %s HTTP/1.0\r\n", path);
 773                         if (flushcache)
 774                                 fprintf(fin, "Pragma: no-cache\r\n");
 775                 } else {
 776                         fprintf(fin, "GET %s HTTP/1.1\r\n", path);
 777                         if (strchr(host, ':')) {
 778                                 char *h, *p;
 779
 780                                 /*
 781                                  * strip off IPv6 scope identifier, since it is
 782                                  * local to the node
 783                                  */
 784                                 h = ftp_strdup(host);
 785                                 if (isipv6addr(h) &&
 786                                     (p = strchr(h, '%')) != NULL) {
 787                                         *p = '\0';
 788                                 }
 789                                 fprintf(fin, "Host: [%s]", h);
 790                                 free(h);
 791                         } else
 792                                 fprintf(fin, "Host: %s", host);
 793                         if (portnum != HTTP_PORT)
 794                                 fprintf(fin, ":%u", portnum);
 795                         fprintf(fin, "\r\n");
 796                         fprintf(fin, "Accept: */*\r\n");
 797                         fprintf(fin, "Connection: close\r\n");
 798                         if (restart_point) {
 799                                 fputs(leading, ttyout);
 800                                 fprintf(fin, "Range: bytes=" LLF "-\r\n",
 801                                     (LLT)restart_point);
 802                                 fprintf(ttyout, "restarting at " LLF,
 803                                     (LLT)restart_point);
 804                                 leading = ", ";
 805                                 hasleading++;
 806                         }
 807                         if (flushcache)
 808                                 fprintf(fin, "Cache-Control: no-cache\r\n");
 809                 }
 810                 if ((useragent=getenv("FTPUSERAGENT")) != NULL) {
 811                         fprintf(fin, "User-Agent: %s\r\n", useragent);
 812                 } else {
 813                         fprintf(fin, "User-Agent: %s/%s\r\n",
 814                             FTP_PRODUCT, FTP_VERSION);
 815                 }
 816                 if (wwwauth) {
 817                         if (verbose) {
 818                                 fprintf(ttyout, "%swith authorization",
 819                                     leading);
 820                                 leading = ", ";
 821                                 hasleading++;
 822                         }
 823                         fprintf(fin, "Authorization: %s\r\n", wwwauth);
 824                 }
 825                 if (proxyauth) {
 826                         if (verbose) {
 827                                 fprintf(ttyout,
 828                                     "%swith proxy authorization", leading);
 829                                 leading = ", ";
 830                                 hasleading++;
 831                         }
 832                         fprintf(fin, "Proxy-Authorization: %s\r\n", proxyauth);
 833                 }
 834                 if (verbose && hasleading)
 835                         fputs(")\n", ttyout);
 836                 fprintf(fin, "\r\n");
 837                 if (fflush(fin) == EOF) {
 838                         warn("Writing HTTP request");
 839                         goto cleanup_fetch_url;
 840                 }
 841
 842                                 /* Read the response */
 843                 len = get_line(fin, buf, sizeof(buf), &errormsg);
 844                 if (len < 0) {
 845                         if (*errormsg == '\n')
 846                                 errormsg++;
 847                         warnx("Receiving HTTP reply: %s", errormsg);
 848                         goto cleanup_fetch_url;
 849                 }
 850                 while (len > 0 && (ISLWS(buf[len-1])))
 851                         buf[--len] = '\0';
 852                 DPRINTF("fetch_url: received `%s'\n", buf);
 853
 854                                 /* Determine HTTP response code */
 855                 cp = strchr(buf, ' ');
 856                 if (cp == NULL)
 857                         goto improper;
 858                 else
 859                         cp++;
 860                 hcode = strtol(cp, &ep, 10);
 861                 if (*ep != '\0' && !isspace((unsigned char)*ep))
 862                         goto improper;
 863                 message = ftp_strdup(cp);
 864
 865                                 /* Read the rest of the header. */
 866                 while (1) {
 867                         len = get_line(fin, buf, sizeof(buf), &errormsg);
 868                         if (len < 0) {
 869                                 if (*errormsg == '\n')
 870                                         errormsg++;
 871                                 warnx("Receiving HTTP reply: %s", errormsg);
 872                                 goto cleanup_fetch_url;
 873                         }
 874                         while (len > 0 && (ISLWS(buf[len-1])))
 875                                 buf[--len] = '\0';
 876                         if (len == 0)
 877                                 break;
 878                         DPRINTF("fetch_url: received `%s'\n", buf);
 879
 880                 /*
 881                  * Look for some headers
 882                  */
 883
 884                         cp = buf;
 885
 886                         if (match_token(&cp, "Content-Length:")) {
 887                                 filesize = STRTOLL(cp, &ep, 10);
 888                                 if (filesize < 0 || *ep != '\0')
 889                                         goto improper;
 890                                 DPRINTF("fetch_url: parsed len as: " LLF "\n",
 891                                     (LLT)filesize);
 892
 893                         } else if (match_token(&cp, "Content-Range:")) {
 894                                 if (! match_token(&cp, "bytes"))
 895                                         goto improper;
 896
 897                                 if (*cp == '*')
 898                                         cp++;
 899                                 else {
 900                                         rangestart = STRTOLL(cp, &ep, 10);
 901                                         if (rangestart < 0 || *ep != '-')
 902                                                 goto improper;
 903                                         cp = ep + 1;
 904                                         rangeend = STRTOLL(cp, &ep, 10);
 905                                         if (rangeend < 0 || rangeend < rangestart)
 906                                                 goto improper;
 907                                         cp = ep;
 908                                 }
 909                                 if (*cp != '/')
 910                                         goto improper;
 911                                 cp++;
 912                                 if (*cp == '*')
 913                                         cp++;
 914                                 else {
 915                                         entitylen = STRTOLL(cp, &ep, 10);
 916                                         if (entitylen < 0)
 917                                                 goto improper;
 918                                         cp = ep;
 919                                 }
 920                                 if (*cp != '\0')
 921                                         goto improper;
 922
 923 #ifndef NO_DEBUG
 924                                 if (ftp_debug) {
 925                                         fprintf(ttyout, "parsed range as: ");
 926                                         if (rangestart == -1)
 927                                                 fprintf(ttyout, "*");
 928                                         else
 929                                                 fprintf(ttyout, LLF "-" LLF,
 930                                                     (LLT)rangestart,
 931                                                     (LLT)rangeend);
 932                                         fprintf(ttyout, "/" LLF "\n", (LLT)entitylen);
 933                                 }
 934 #endif
 935                                 if (! restart_point) {
 936                                         warnx(
 937                                     "Received unexpected Content-Range header");
 938                                         goto cleanup_fetch_url;
 939                                 }
 940
 941                         } else if (match_token(&cp, "Last-Modified:")) {
 942                                 struct tm parsed;
 943                                 char *t;
 944
 945                                 memset(&parsed, 0, sizeof(parsed));
 946                                                         /* RFC1123 */
 947                                 if ((t = strptime(cp,
 948                                                 "%a, %d %b %Y %H:%M:%S GMT",
 949                                                 &parsed))
 950                                                         /* RFC0850 */
 951                                     || (t = strptime(cp,
 952                                                 "%a, %d-%b-%y %H:%M:%S GMT",
 953                                                 &parsed))
 954                                                         /* asctime */
 955                                     || (t = strptime(cp,
 956                                                 "%a, %b %d %H:%M:%S %Y",
 957                                                 &parsed))) {
 958                                         parsed.tm_isdst = -1;
 959                                         if (*t == '\0')
 960                                                 mtime = timegm(&parsed);
 961 #ifndef NO_DEBUG
 962                                         if (ftp_debug && mtime != -1) {
 963                                                 fprintf(ttyout,
 964                                                     "parsed date as: %s",
 965                                                 rfc2822time(localtime(&mtime)));
 966                                         }
 967 #endif
 968                                 }
 969
 970                         } else if (match_token(&cp, "Location:")) {
 971                                 location = ftp_strdup(cp);
 972                                 DPRINTF("fetch_url: parsed location as `%s'\n",
 973                                     cp);
 974
 975                         } else if (match_token(&cp, "Transfer-Encoding:")) {
 976                                 if (match_token(&cp, "binary")) {
 977                                         warnx(
 978                         "Bogus transfer encoding `binary' (fetching anyway)");
 979                                         continue;
 980                                 }
 981                                 if (! (token = match_token(&cp, "chunked"))) {
 982                                         warnx(
 983                                     "Unsupported transfer encoding `%s'",
 984                                             token);
 985                                         goto cleanup_fetch_url;
 986                                 }
 987                                 ischunked++;
 988                                 DPRINTF("fetch_url: using chunked encoding\n");
 989
 990                         } else if (match_token(&cp, "Proxy-Authenticate:")
 991                                 || match_token(&cp, "WWW-Authenticate:")) {
 992                                 if (! (token = match_token(&cp, "Basic"))) {
 993                                         DPRINTF(
 994                         "fetch_url: skipping unknown auth scheme `%s'\n",
 995                                                     token);
 996                                         continue;
 997                                 }
 998                                 FREEPTR(auth);
 999                                 auth = ftp_strdup(token);
1000                                 DPRINTF("fetch_url: parsed auth as `%s'\n", cp);
1001                         }
1002
1003                 }
1004                                 /* finished parsing header */
1005
1006                 switch (hcode) {
1007                 case 200:
1008                         break;
1009                 case 206:
1010                         if (! restart_point) {
1011                                 warnx("Not expecting partial content header");
1012                                 goto cleanup_fetch_url;
1013                         }
1014                         break;
1015                 case 300:
1016                 case 301:
1017                 case 302:
1018                 case 303:
1019                 case 305:
1020                 case 307:
1021                         if (EMPTYSTRING(location)) {
1022                                 warnx(
1023                                 "No redirection Location provided by server");
1024                                 goto cleanup_fetch_url;
1025                         }
1026                         if (redirect_loop++ > 5) {
1027                                 warnx("Too many redirections requested");
1028                                 goto cleanup_fetch_url;
1029                         }
1030                         if (hcode == 305) {
1031                                 if (verbose)
1032                                         fprintf(ttyout, "Redirected via %s\n",
1033                                             location);
1034                                 rval = fetch_url(url, location,
1035                                     proxyauth, wwwauth);
1036                         } else {
1037                                 if (verbose)
1038                                         fprintf(ttyout, "Redirected to %s\n",
1039                                             location);
1040                                 rval = go_fetch(location);
1041                         }
1042                         goto cleanup_fetch_url;
1043 #ifndef NO_AUTH
1044                 case 401:
1045                 case 407:
1046                     {
1047                         char **authp;
1048                         char *auser, *apass;
1049
1050                         if (hcode == 401) {
1051                                 authp = &wwwauth;
1052                                 auser = uuser;
1053                                 apass = pass;
1054                         } else {
1055                                 authp = &proxyauth;
1056                                 auser = puser;
1057                                 apass = ppass;
1058                         }
1059                         if (verbose || *authp == NULL ||
1060                             auser == NULL || apass == NULL)
1061                                 fprintf(ttyout, "%s\n", message);
1062                         if (EMPTYSTRING(auth)) {
1063                                 warnx(
1064                             "No authentication challenge provided by server");
1065                                 goto cleanup_fetch_url;
1066                         }
1067                         if (*authp != NULL) {
1068                                 char reply[10];
1069
1070                                 fprintf(ttyout,
1071                                     "Authorization failed. Retry (y/n)? ");
1072                                 if (get_line(stdin, reply, sizeof(reply), NULL)
1073                                     < 0) {
1074                                         goto cleanup_fetch_url;
1075                                 }
1076                                 if (tolower((unsigned char)reply[0]) != 'y')
1077                                         goto cleanup_fetch_url;
1078                                 auser = NULL;
1079                                 apass = NULL;
1080                         }
1081                         if (auth_url(auth, authp, auser, apass) == 0) {
1082                                 rval = fetch_url(url, proxyenv,
1083                                     proxyauth, wwwauth);
1084                                 memset(*authp, 0, strlen(*authp));
1085                                 FREEPTR(*authp);
1086                         }
1087                         goto cleanup_fetch_url;
1088                     }
1089 #endif
1090                 default:
1091                         if (message)
1092                                 warnx("Error retrieving file `%s'", message);
1093                         else
1094                                 warnx("Unknown error retrieving file");
1095                         goto cleanup_fetch_url;
1096                 }
1097         }               /* end of ftp:// or http:// specific setup */
1098
1099                         /* Open the output file. */
1100
1101         /*
1102          * Only trust filenames with special meaning if they came from
1103          * the command line
1104          */
1105         if (outfile == savefile) {
1106                 if (strcmp(savefile, "-") == 0) {
1107                         fout = stdout;
1108                 } else if (*savefile == '|') {
1109                         oldintp = xsignal(SIGPIPE, SIG_IGN);
1110                         fout = popen(savefile + 1, "w");
1111                         if (fout == NULL) {
1112                                 warn("Can't execute `%s'", savefile + 1);
1113                                 goto cleanup_fetch_url;
1114                         }
1115                         closefunc = pclose;
1116                 }
1117         }
1118         if (fout == NULL) {
1119                 if ((rangeend != -1 && rangeend <= restart_point) ||
1120                     (rangestart == -1 && filesize != -1 && filesize <= restart_point)) {
1121                         /* already done */
1122                         if (verbose)
1123                                 fprintf(ttyout, "already done\n");
1124                         rval = 0;
1125                         goto cleanup_fetch_url;
1126                 }
1127                 if (restart_point && rangestart != -1) {
1128                         if (entitylen != -1)
1129                                 filesize = entitylen;
1130                         if (rangestart != restart_point) {
1131                                 warnx(
1132                                     "Size of `%s' differs from save file `%s'",
1133                                     url, savefile);
1134                                 goto cleanup_fetch_url;
1135                         }
1136                         fout = fopen(savefile, "a");
1137                 } else
1138                         fout = fopen(savefile, "w");
1139                 if (fout == NULL) {
1140                         warn("Can't open `%s'", savefile);
1141                         goto cleanup_fetch_url;
1142                 }
1143                 closefunc = fclose;
1144         }
1145
1146                         /* Trap signals */
1147         if (sigsetjmp(httpabort, 1))
1148                 goto cleanup_fetch_url;
1149         (void)xsignal(SIGQUIT, psummary);
1150         oldintr = xsignal(SIGINT, aborthttp);
1151
1152         if ((size_t)rcvbuf_size > bufsize) {
1153                 if (xferbuf)
1154                         (void)free(xferbuf);
1155                 bufsize = rcvbuf_size;
1156                 xferbuf = ftp_malloc(bufsize);
1157         }
1158
1159         bytes = 0;
1160         hashbytes = mark;
1161         progressmeter(-1);
1162
1163                         /* Finally, suck down the file. */
1164         do {
1165                 long chunksize;
1166                 short lastchunk;
1167
1168                 chunksize = 0;
1169                 lastchunk = 0;
1170                                         /* read chunk-size */
1171                 if (ischunked) {
1172                         if (fgets(xferbuf, bufsize, fin) == NULL) {
1173                                 warnx("Unexpected EOF reading chunk-size");
1174                                 goto cleanup_fetch_url;
1175                         }
1176                         errno = 0;
1177                         chunksize = strtol(xferbuf, &ep, 16);
1178                         if (ep == xferbuf) {
1179                                 warnx("Invalid chunk-size");
1180                                 goto cleanup_fetch_url;
1181                         }
1182                         if (errno == ERANGE || chunksize < 0) {
1183                                 errno = ERANGE;
1184                                 warn("Chunk-size `%.*s'",
1185                                     (int)(ep-xferbuf), xferbuf);
1186                                 goto cleanup_fetch_url;
1187                         }
1188
1189                                 /*
1190                                  * XXX: Work around bug in Apache 1.3.9 and
1191                                  *      1.3.11, which incorrectly put trailing
1192                                  *      space after the chunk-size.
1193                                  */
1194                         while (*ep == ' ')
1195                                 ep++;
1196
1197                                         /* skip [ chunk-ext ] */
1198                         if (*ep == ';') {
1199                                 while (*ep && *ep != '\r')
1200                                         ep++;
1201                         }
1202
1203                         if (strcmp(ep, "\r\n") != 0) {
1204                                 warnx("Unexpected data following chunk-size");
1205                                 goto cleanup_fetch_url;
1206                         }
1207                         DPRINTF("fetch_url: got chunk-size of " LLF "\n",
1208                             (LLT)chunksize);
1209                         if (chunksize == 0) {
1210                                 lastchunk = 1;
1211                                 goto chunkdone;
1212                         }
1213                 }
1214                                         /* transfer file or chunk */
1215                 while (1) {
1216                         struct timeval then, now, td;
1217                         off_t bufrem;
1218
1219                         if (rate_get)
1220                                 (void)gettimeofday(&then, NULL);
1221                         bufrem = rate_get ? rate_get : (off_t)bufsize;
1222                         if (ischunked)
1223                                 bufrem = MIN(chunksize, bufrem);
1224                         while (bufrem > 0) {
1225                                 flen = fread(xferbuf, sizeof(char),
1226                                     MIN((off_t)bufsize, bufrem), fin);
1227                                 if (flen <= 0)
1228                                         goto chunkdone;
1229                                 bytes += flen;
1230                                 bufrem -= flen;
1231                                 if (fwrite(xferbuf, sizeof(char), flen, fout)
1232                                     != flen) {
1233                                         warn("Writing `%s'", savefile);
1234                                         goto cleanup_fetch_url;
1235                                 }
1236                                 if (hash && !progress) {
1237                                         while (bytes >= hashbytes) {
1238                                                 (void)putc('#', ttyout);
1239                                                 hashbytes += mark;
1240                                         }
1241                                         (void)fflush(ttyout);
1242                                 }
1243                                 if (ischunked) {
1244                                         chunksize -= flen;
1245                                         if (chunksize <= 0)
1246                                                 break;
1247                                 }
1248                         }
1249                         if (rate_get) {
1250                                 while (1) {
1251                                         (void)gettimeofday(&now, NULL);
1252                                         timersub(&now, &then, &td);
1253                                         if (td.tv_sec > 0)
1254                                                 break;
1255                                         usleep(1000000 - td.tv_usec);
1256                                 }
1257                         }
1258                         if (ischunked && chunksize <= 0)
1259                                 break;
1260                 }
1261                                         /* read CRLF after chunk*/
1262  chunkdone:
1263                 if (ischunked) {
1264                         if (fgets(xferbuf, bufsize, fin) == NULL) {
1265                                 warnx("Unexpected EOF reading chunk CRLF");
1266                                 goto cleanup_fetch_url;
1267                         }
1268                         if (strcmp(xferbuf, "\r\n") != 0) {
1269                                 warnx("Unexpected data following chunk");
1270                                 goto cleanup_fetch_url;
1271                         }
1272                         if (lastchunk)
1273                                 break;
1274                 }
1275         } while (ischunked);
1276
1277 /* XXX: deal with optional trailer & CRLF here? */
1278
1279         if (hash && !progress && bytes > 0) {
1280                 if (bytes < mark)
1281                         (void)putc('#', ttyout);
1282                 (void)putc('\n', ttyout);
1283         }
1284         if (ferror(fin)) {
1285                 warn("Reading file");
1286                 goto cleanup_fetch_url;
1287         }
1288         progressmeter(1);
1289         (void)fflush(fout);
1290         if (closefunc == fclose && mtime != -1) {
1291                 struct timeval tval[2];
1292
1293                 (void)gettimeofday(&tval[0], NULL);
1294                 tval[1].tv_sec = mtime;
1295                 tval[1].tv_usec = 0;
1296                 (*closefunc)(fout);
1297                 fout = NULL;
1298
1299                 if (utimes(savefile, tval) == -1) {
1300                         fprintf(ttyout,
1301                             "Can't change modification time to %s",
1302                             rfc2822time(localtime(&mtime)));
1303                 }
1304         }
1305         if (bytes > 0)
1306                 ptransfer(0);
1307         bytes = 0;
1308
1309         rval = 0;
1310         goto cleanup_fetch_url;
1311
1312  improper:
1313         warnx("Improper response from `%s:%s'", host, port);
1314
1315  cleanup_fetch_url:
1316         if (oldintr)
1317                 (void)xsignal(SIGINT, oldintr);
1318         if (oldintp)
1319                 (void)xsignal(SIGPIPE, oldintp);
1320         if (fin != NULL)
1321                 fclose(fin);
1322         else if (s != -1)
1323                 close(s);
1324         if (closefunc != NULL && fout != NULL)
1325                 (*closefunc)(fout);
1326         if (res0)
1327                 freeaddrinfo(res0);
1328         if (savefile != outfile)
1329                 FREEPTR(savefile);
1330         FREEPTR(uuser);
1331         if (pass != NULL)
1332                 memset(pass, 0, strlen(pass));
1333         FREEPTR(pass);
1334         FREEPTR(host);
1335         FREEPTR(port);
1336         FREEPTR(path);
1337         FREEPTR(decodedpath);
1338         FREEPTR(puser);
1339         if (ppass != NULL)
1340                 memset(ppass, 0, strlen(ppass));
1341         FREEPTR(ppass);
1342         FREEPTR(auth);
1343         FREEPTR(location);
1344         FREEPTR(message);
1345         return (rval);
1346 }
1347
1348 /*
1349  * Abort a HTTP retrieval
1350  */
1351 void
1352 aborthttp(int notused)
1353 {
1354         char msgbuf[100];
1355         size_t len;
1356
1357         sigint_raised = 1;
1358         alarmtimer(0);
1359         len = strlcpy(msgbuf, "\nHTTP fetch aborted.\n", sizeof(msgbuf));
1360         write(fileno(ttyout), msgbuf, len);
1361         siglongjmp(httpabort, 1);
1362 }
1363
1364 /*
1365  * Retrieve ftp URL or classic ftp argument using FTP.
1366  * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
1367  * is still open (e.g, ftp xfer with trailing /)
1368  */
1369 static int
1370 fetch_ftp(const char *url)
1371 {
1372         char            *cp, *xargv[5], rempath[MAXPATHLEN];
1373         char            *host, *path, *dir, *file, *uuser, *pass;
1374         char            *port;
1375         char             cmdbuf[MAXPATHLEN];
1376         char             dirbuf[4];
1377         int              dirhasglob, filehasglob, rval, transtype, xargc;
1378         int              oanonftp, oautologin;
1379         in_port_t        portnum;
1380         url_t            urltype;
1381
1382         DPRINTF("fetch_ftp: `%s'\n", url);
1383         host = path = dir = file = uuser = pass = NULL;
1384         port = NULL;
1385         rval = 1;
1386         transtype = TYPE_I;
1387
1388         if (STRNEQUAL(url, FTP_URL)) {
1389                 if ((parse_url(url, "URL", &urltype, &uuser, &pass,
1390                     &host, &port, &portnum, &path) == -1) ||
1391                     (uuser != NULL && *uuser == '\0') ||
1392                     EMPTYSTRING(host)) {
1393                         warnx("Invalid URL `%s'", url);
1394                         goto cleanup_fetch_ftp;
1395                 }
1396                 /*
1397                  * Note: Don't url_decode(path) here.  We need to keep the
1398                  * distinction between "/" and "%2F" until later.
1399                  */
1400
1401                                         /* check for trailing ';type=[aid]' */
1402                 if (! EMPTYSTRING(path) && (cp = strrchr(path, ';')) != NULL) {
1403                         if (strcasecmp(cp, ";type=a") == 0)
1404                                 transtype = TYPE_A;
1405                         else if (strcasecmp(cp, ";type=i") == 0)
1406                                 transtype = TYPE_I;
1407                         else if (strcasecmp(cp, ";type=d") == 0) {
1408                                 warnx(
1409                             "Directory listing via a URL is not supported");
1410                                 goto cleanup_fetch_ftp;
1411                         } else {
1412                                 warnx("Invalid suffix `%s' in URL `%s'", cp,
1413                                     url);
1414                                 goto cleanup_fetch_ftp;
1415                         }
1416                         *cp = 0;
1417                 }
1418         } else {                        /* classic style `[user@]host:[file]' */
1419                 urltype = CLASSIC_URL_T;
1420                 host = ftp_strdup(url);
1421                 cp = strchr(host, '@');
1422                 if (cp != NULL) {
1423                         *cp = '\0';
1424                         uuser = host;
1425                         anonftp = 0;    /* disable anonftp */
1426                         host = ftp_strdup(cp + 1);
1427                 }
1428                 cp = strchr(host, ':');
1429                 if (cp != NULL) {
1430                         *cp = '\0';
1431                         path = ftp_strdup(cp + 1);
1432                 }
1433         }
1434         if (EMPTYSTRING(host))
1435                 goto cleanup_fetch_ftp;
1436
1437                         /* Extract the file and (if present) directory name. */
1438         dir = path;
1439         if (! EMPTYSTRING(dir)) {
1440                 /*
1441                  * If we are dealing with classic `[user@]host:[path]' syntax,
1442                  * then a path of the form `/file' (resulting from input of the
1443                  * form `host:/file') means that we should do "CWD /" before
1444                  * retrieving the file.  So we set dir="/" and file="file".
1445                  *
1446                  * But if we are dealing with URLs like `ftp://host/path' then
1447                  * a path of the form `/file' (resulting from a URL of the form
1448                  * `ftp://host//file') means that we should do `CWD ' (with an
1449                  * empty argument) before retrieving the file.  So we set
1450                  * dir="" and file="file".
1451                  *
1452                  * If the path does not contain / at all, we set dir=NULL.
1453                  * (We get a path without any slashes if we are dealing with
1454                  * classic `[user@]host:[file]' or URL `ftp://host/file'.)
1455                  *
1456                  * In all other cases, we set dir to a string that does not
1457                  * include the final '/' that separates the dir part from the
1458                  * file part of the path.  (This will be the empty string if
1459                  * and only if we are dealing with a path of the form `/file'
1460                  * resulting from an URL of the form `ftp://host//file'.)
1461                  */
1462                 cp = strrchr(dir, '/');
1463                 if (cp == dir && urltype == CLASSIC_URL_T) {
1464                         file = cp + 1;
1465                         (void)strlcpy(dirbuf, "/", sizeof(dirbuf));
1466                         dir = dirbuf;
1467                 } else if (cp != NULL) {
1468                         *cp++ = '\0';
1469                         file = cp;
1470                 } else {
1471                         file = dir;
1472                         dir = NULL;
1473                 }
1474         } else
1475                 dir = NULL;
1476         if (urltype == FTP_URL_T && file != NULL) {
1477                 url_decode(file);
1478                 /* but still don't url_decode(dir) */
1479         }
1480         DPRINTF("fetch_ftp: user `%s' pass `%s' host %s port %s "
1481             "path `%s' dir `%s' file `%s'\n",
1482             STRorNULL(uuser), STRorNULL(pass),
1483             STRorNULL(host), STRorNULL(port),
1484             STRorNULL(path), STRorNULL(dir), STRorNULL(file));
1485
1486         dirhasglob = filehasglob = 0;
1487         if (doglob && urltype == CLASSIC_URL_T) {
1488                 if (! EMPTYSTRING(dir) && strpbrk(dir, "*?[]{}") != NULL)
1489                         dirhasglob = 1;
1490                 if (! EMPTYSTRING(file) && strpbrk(file, "*?[]{}") != NULL)
1491                         filehasglob = 1;
1492         }
1493
1494                         /* Set up the connection */
1495         oanonftp = anonftp;
1496         if (connected)
1497                 disconnect(0, NULL);
1498         anonftp = oanonftp;
1499         (void)strlcpy(cmdbuf, getprogname(), sizeof(cmdbuf));
1500         xargv[0] = cmdbuf;
1501         xargv[1] = host;
1502         xargv[2] = NULL;
1503         xargc = 2;
1504         if (port) {
1505                 xargv[2] = port;
1506                 xargv[3] = NULL;
1507                 xargc = 3;
1508         }
1509         oautologin = autologin;
1510                 /* don't autologin in setpeer(), use ftp_login() below */
1511         autologin = 0;
1512         setpeer(xargc, xargv);
1513         autologin = oautologin;
1514         if ((connected == 0) ||
1515             (connected == 1 && !ftp_login(host, uuser, pass))) {
1516                 warnx("Can't connect or login to host `%s:%s'",
1517                         host, port ? port : "?");
1518                 goto cleanup_fetch_ftp;
1519         }
1520
1521         switch (transtype) {
1522         case TYPE_A:
1523                 setascii(1, xargv);
1524                 break;
1525         case TYPE_I:
1526                 setbinary(1, xargv);
1527                 break;
1528         default:
1529                 errx(1, "fetch_ftp: unknown transfer type %d", transtype);
1530         }
1531
1532                 /*
1533                  * Change directories, if necessary.
1534                  *
1535                  * Note: don't use EMPTYSTRING(dir) below, because
1536                  * dir=="" means something different from dir==NULL.
1537                  */
1538         if (dir != NULL && !dirhasglob) {
1539                 char *nextpart;
1540
1541                 /*
1542                  * If we are dealing with a classic `[user@]host:[path]'
1543                  * (urltype is CLASSIC_URL_T) then we have a raw directory
1544                  * name (not encoded in any way) and we can change
1545                  * directories in one step.
1546                  *
1547                  * If we are dealing with an `ftp://host/path' URL
1548                  * (urltype is FTP_URL_T), then RFC3986 says we need to
1549                  * send a separate CWD command for each unescaped "/"
1550                  * in the path, and we have to interpret %hex escaping
1551                  * *after* we find the slashes.  It's possible to get
1552                  * empty components here, (from multiple adjacent
1553                  * slashes in the path) and RFC3986 says that we should
1554                  * still do `CWD ' (with a null argument) in such cases.
1555                  *
1556                  * Many ftp servers don't support `CWD ', so if there's an
1557                  * error performing that command, bail out with a descriptive
1558                  * message.
1559                  *
1560                  * Examples:
1561                  *
1562                  * host:                        dir="", urltype=CLASSIC_URL_T
1563                  *              logged in (to default directory)
1564                  * host:file                    dir=NULL, urltype=CLASSIC_URL_T
1565                  *              "RETR file"
1566                  * host:dir/                    dir="dir", urltype=CLASSIC_URL_T
1567                  *              "CWD dir", logged in
1568                  * ftp://host/                  dir="", urltype=FTP_URL_T
1569                  *              logged in (to default directory)
1570                  * ftp://host/dir/              dir="dir", urltype=FTP_URL_T
1571                  *              "CWD dir", logged in
1572                  * ftp://host/file              dir=NULL, urltype=FTP_URL_T
1573                  *              "RETR file"
1574                  * ftp://host//file             dir="", urltype=FTP_URL_T
1575                  *              "CWD ", "RETR file"
1576                  * host:/file                   dir="/", urltype=CLASSIC_URL_T
1577                  *              "CWD /", "RETR file"
1578                  * ftp://host///file            dir="/", urltype=FTP_URL_T
1579                  *              "CWD ", "CWD ", "RETR file"
1580                  * ftp://host/%2F/file          dir="%2F", urltype=FTP_URL_T
1581                  *              "CWD /", "RETR file"
1582                  * ftp://host/foo/file          dir="foo", urltype=FTP_URL_T
1583                  *              "CWD foo", "RETR file"
1584                  * ftp://host/foo/bar/file      dir="foo/bar"
1585                  *              "CWD foo", "CWD bar", "RETR file"
1586                  * ftp://host//foo/bar/file     dir="/foo/bar"
1587                  *              "CWD ", "CWD foo", "CWD bar", "RETR file"
1588                  * ftp://host/foo//bar/file     dir="foo//bar"
1589                  *              "CWD foo", "CWD ", "CWD bar", "RETR file"
1590                  * ftp://host/%2F/foo/bar/file  dir="%2F/foo/bar"
1591                  *              "CWD /", "CWD foo", "CWD bar", "RETR file"
1592                  * ftp://host/%2Ffoo/bar/file   dir="%2Ffoo/bar"
1593                  *              "CWD /foo", "CWD bar", "RETR file"
1594                  * ftp://host/%2Ffoo%2Fbar/file dir="%2Ffoo%2Fbar"
1595                  *              "CWD /foo/bar", "RETR file"
1596                  * ftp://host/%2Ffoo%2Fbar%2Ffile       dir=NULL
1597                  *              "RETR /foo/bar/file"
1598                  *
1599                  * Note that we don't need `dir' after this point.
1600                  */
1601                 do {
1602                         if (urltype == FTP_URL_T) {
1603                                 nextpart = strchr(dir, '/');
1604                                 if (nextpart) {
1605                                         *nextpart = '\0';
1606                                         nextpart++;
1607                                 }
1608                                 url_decode(dir);
1609                         } else
1610                                 nextpart = NULL;
1611                         DPRINTF("fetch_ftp: dir `%s', nextpart `%s'\n",
1612                             STRorNULL(dir), STRorNULL(nextpart));
1613                         if (urltype == FTP_URL_T || *dir != '\0') {
1614                                 (void)strlcpy(cmdbuf, "cd", sizeof(cmdbuf));
1615                                 xargv[0] = cmdbuf;
1616                                 xargv[1] = dir;
1617                                 xargv[2] = NULL;
1618                                 dirchange = 0;
1619                                 cd(2, xargv);
1620                                 if (! dirchange) {
1621                                         if (*dir == '\0' && code == 500)
1622                                                 fprintf(stderr,
1623 "\n"
1624 "ftp: The `CWD ' command (without a directory), which is required by\n"
1625 "     RFC3986 to support the empty directory in the URL pathname (`//'),\n"
1626 "     conflicts with the server's conformance to RFC0959.\n"
1627 "     Try the same URL without the `//' in the URL pathname.\n"
1628 "\n");
1629                                         goto cleanup_fetch_ftp;
1630                                 }
1631                         }
1632                         dir = nextpart;
1633                 } while (dir != NULL);
1634         }
1635
1636         if (EMPTYSTRING(file)) {
1637                 rval = -1;
1638                 goto cleanup_fetch_ftp;
1639         }
1640
1641         if (dirhasglob) {
1642                 (void)strlcpy(rempath, dir,     sizeof(rempath));
1643                 (void)strlcat(rempath, "/",     sizeof(rempath));
1644                 (void)strlcat(rempath, file,    sizeof(rempath));
1645                 file = rempath;
1646         }
1647
1648                         /* Fetch the file(s). */
1649         xargc = 2;
1650         (void)strlcpy(cmdbuf, "get", sizeof(cmdbuf));
1651         xargv[0] = cmdbuf;
1652         xargv[1] = file;
1653         xargv[2] = NULL;
1654         if (dirhasglob || filehasglob) {
1655                 int ointeractive;
1656
1657                 ointeractive = interactive;
1658                 interactive = 0;
1659                 if (restartautofetch)
1660                         (void)strlcpy(cmdbuf, "mreget", sizeof(cmdbuf));
1661                 else
1662                         (void)strlcpy(cmdbuf, "mget", sizeof(cmdbuf));
1663                 xargv[0] = cmdbuf;
1664                 mget(xargc, xargv);
1665                 interactive = ointeractive;
1666         } else {
1667                 if (outfile == NULL) {
1668                         cp = strrchr(file, '/');        /* find savefile */
1669                         if (cp != NULL)
1670                                 outfile = cp + 1;
1671                         else
1672                                 outfile = file;
1673                 }
1674                 xargv[2] = (char *)outfile;
1675                 xargv[3] = NULL;
1676                 xargc++;
1677                 if (restartautofetch)
1678                         reget(xargc, xargv);
1679                 else
1680                         get(xargc, xargv);
1681         }
1682
1683         if ((code / 100) == COMPLETE)
1684                 rval = 0;
1685
1686  cleanup_fetch_ftp:
1687         FREEPTR(port);
1688         FREEPTR(host);
1689         FREEPTR(path);
1690         FREEPTR(uuser);
1691         if (pass)
1692                 memset(pass, 0, strlen(pass));
1693         FREEPTR(pass);
1694         return (rval);
1695 }
1696
1697 /*
1698  * Retrieve the given file to outfile.
1699  * Supports arguments of the form:
1700  *      "host:path", "ftp://host/path"  if $ftpproxy, call fetch_url() else
1701  *                                      call fetch_ftp()
1702  *      "http://host/path"              call fetch_url() to use HTTP
1703  *      "file:///path"                  call fetch_url() to copy
1704  *      "about:..."                     print a message
1705  *
1706  * Returns 1 on failure, 0 on completed xfer, -1 if ftp connection
1707  * is still open (e.g, ftp xfer with trailing /)
1708  */
1709 static int
1710 go_fetch(const char *url)
1711 {
1712         char *proxyenv;
1713
1714 #ifndef NO_ABOUT
1715         /*
1716          * Check for about:*
1717          */
1718         if (STRNEQUAL(url, ABOUT_URL)) {
1719                 url += sizeof(ABOUT_URL) -1;
1720                 if (strcasecmp(url, "ftp") == 0 ||
1721                     strcasecmp(url, "tnftp") == 0) {
1722                         fputs(
1723 "This version of ftp has been enhanced by Luke Mewburn <lukem@NetBSD.org>\n"
1724 "for the NetBSD project.  Execute `man ftp' for more details.\n", ttyout);
1725                 } else if (strcasecmp(url, "lukem") == 0) {
1726                         fputs(
1727 "Luke Mewburn is the author of most of the enhancements in this ftp client.\n"
1728 "Please email feedback to <lukem@NetBSD.org>.\n", ttyout);
1729                 } else if (strcasecmp(url, "netbsd") == 0) {
1730                         fputs(
1731 "NetBSD is a freely available and redistributable UNIX-like operating system.\n"
1732 "For more information, see http://www.NetBSD.org/\n", ttyout);
1733                 } else if (strcasecmp(url, "version") == 0) {
1734                         fprintf(ttyout, "Version: %s %s%s\n",
1735                             FTP_PRODUCT, FTP_VERSION,
1736 #ifdef INET6
1737                             ""
1738 #else
1739                             " (-IPv6)"
1740 #endif
1741                         );
1742                 } else {
1743                         fprintf(ttyout, "`%s' is an interesting topic.\n", url);
1744                 }
1745                 fputs("\n", ttyout);
1746                 return (0);
1747         }
1748 #endif
1749
1750         /*
1751          * Check for file:// and http:// URLs.
1752          */
1753         if (STRNEQUAL(url, HTTP_URL) || STRNEQUAL(url, FILE_URL))
1754                 return (fetch_url(url, NULL, NULL, NULL));
1755
1756         /*
1757          * Try FTP URL-style and host:file arguments next.
1758          * If ftpproxy is set with an FTP URL, use fetch_url()
1759          * Othewise, use fetch_ftp().
1760          */
1761         proxyenv = getoptionvalue("ftp_proxy");
1762         if (!EMPTYSTRING(proxyenv) && STRNEQUAL(url, FTP_URL))
1763                 return (fetch_url(url, NULL, NULL, NULL));
1764
1765         return (fetch_ftp(url));
1766 }
1767
1768 /*
1769  * Retrieve multiple files from the command line,
1770  * calling go_fetch() for each file.
1771  *
1772  * If an ftp path has a trailing "/", the path will be cd-ed into and
1773  * the connection remains open, and the function will return -1
1774  * (to indicate the connection is alive).
1775  * If an error occurs the return value will be the offset+1 in
1776  * argv[] of the file that caused a problem (i.e, argv[x]
1777  * returns x+1)
1778  * Otherwise, 0 is returned if all files retrieved successfully.
1779  */
1780 int
1781 auto_fetch(int argc, char *argv[])
1782 {
1783         volatile int    argpos, rval;
1784
1785         argpos = rval = 0;
1786
1787         if (sigsetjmp(toplevel, 1)) {
1788                 if (connected)
1789                         disconnect(0, NULL);
1790                 if (rval > 0)
1791                         rval = argpos + 1;
1792                 return (rval);
1793         }
1794         (void)xsignal(SIGINT, intr);
1795         (void)xsignal(SIGPIPE, lostpeer);
1796
1797         /*
1798          * Loop through as long as there's files to fetch.
1799          */
1800         for (; (rval == 0) && (argpos < argc); argpos++) {
1801                 if (strchr(argv[argpos], ':') == NULL)
1802                         break;
1803                 redirect_loop = 0;
1804                 if (!anonftp)
1805                         anonftp = 2;    /* Handle "automatic" transfers. */
1806                 rval = go_fetch(argv[argpos]);
1807                 if (outfile != NULL && strcmp(outfile, "-") != 0
1808                     && outfile[0] != '|')
1809                         outfile = NULL;
1810                 if (rval > 0)
1811                         rval = argpos + 1;
1812         }
1813
1814         if (connected && rval != -1)
1815                 disconnect(0, NULL);
1816         return (rval);
1817 }
1818
1819
1820 /*
1821  * Upload multiple files from the command line.
1822  *
1823  * If an error occurs the return value will be the offset+1 in
1824  * argv[] of the file that caused a problem (i.e, argv[x]
1825  * returns x+1)
1826  * Otherwise, 0 is returned if all files uploaded successfully.
1827  */
1828 int
1829 auto_put(int argc, char **argv, const char *uploadserver)
1830 {
1831         char    *uargv[4], *path, *pathsep;
1832         int      uargc, rval, argpos;
1833         size_t   len;
1834         char     cmdbuf[MAX_C_NAME];
1835
1836         (void)strlcpy(cmdbuf, "mput", sizeof(cmdbuf));
1837         uargv[0] = cmdbuf;
1838         uargv[1] = argv[0];
1839         uargc = 2;
1840         uargv[2] = uargv[3] = NULL;
1841         pathsep = NULL;
1842         rval = 1;
1843
1844         DPRINTF("auto_put: target `%s'\n", uploadserver);
1845
1846         path = ftp_strdup(uploadserver);
1847         len = strlen(path);
1848         if (path[len - 1] != '/' && path[len - 1] != ':') {
1849                         /*
1850                          * make sure we always pass a directory to auto_fetch
1851                          */
1852                 if (argc > 1) {         /* more than one file to upload */
1853                         len = strlen(uploadserver) + 2; /* path + "/" + "\0" */
1854                         free(path);
1855                         path = (char *)ftp_malloc(len);
1856                         (void)strlcpy(path, uploadserver, len);
1857                         (void)strlcat(path, "/", len);
1858                 } else {                /* single file to upload */
1859                         (void)strlcpy(cmdbuf, "put", sizeof(cmdbuf));
1860                         uargv[0] = cmdbuf;
1861                         pathsep = strrchr(path, '/');
1862                         if (pathsep == NULL) {
1863                                 pathsep = strrchr(path, ':');
1864                                 if (pathsep == NULL) {
1865                                         warnx("Invalid URL `%s'", path);
1866                                         goto cleanup_auto_put;
1867                                 }
1868                                 pathsep++;
1869                                 uargv[2] = ftp_strdup(pathsep);
1870                                 pathsep[0] = '/';
1871                         } else
1872                                 uargv[2] = ftp_strdup(pathsep + 1);
1873                         pathsep[1] = '\0';
1874                         uargc++;
1875                 }
1876         }
1877         DPRINTF("auto_put: URL `%s' argv[2] `%s'\n",
1878             path, STRorNULL(uargv[2]));
1879
1880                         /* connect and cwd */
1881         rval = auto_fetch(1, &path);
1882         if(rval >= 0)
1883                 goto cleanup_auto_put;
1884
1885         rval = 0;
1886
1887                         /* target filename provided; upload 1 file */
1888                         /* XXX : is this the best way? */
1889         if (uargc == 3) {
1890                 uargv[1] = argv[0];
1891                 put(uargc, uargv);
1892                 if ((code / 100) != COMPLETE)
1893                         rval = 1;
1894         } else {        /* otherwise a target dir: upload all files to it */
1895                 for(argpos = 0; argv[argpos] != NULL; argpos++) {
1896                         uargv[1] = argv[argpos];
1897                         mput(uargc, uargv);
1898                         if ((code / 100) != COMPLETE) {
1899                                 rval = argpos + 1;
1900                                 break;
1901                         }
1902                 }
1903         }
1904
1905  cleanup_auto_put:
1906         free(path);
1907         FREEPTR(uargv[2]);
1908         return (rval);
1909 }