share/examples/refuse/ian/libfetch/common.c

   1 /*-
   2  * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer
  10  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "free2net.h"
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD: src/lib/libfetch/common.c,v 1.48.4.2 2006/11/11 00:16:07 des Exp $");
  33
  34 #include <sys/param.h>
  35 #include <sys/socket.h>
  36 #include <sys/time.h>
  37 #include <sys/uio.h>
  38 #include <netinet/in.h>
  39
  40 #include <errno.h>
  41 #include <netdb.h>
  42 #include <pwd.h>
  43 #include <stdarg.h>
  44 #include <stdlib.h>
  45 #include <stdio.h>
  46 #include <string.h>
  47 #include <unistd.h>
  48
  49 #include "fetch.h"
  50 #include "common.h"
  51
  52
  53 /*** Local data **************************************************************/
  54
  55 /*
  56  * Error messages for resolver errors
  57  */
  58 static struct fetcherr _netdb_errlist[] = {
  59 #ifdef EAI_NODATA
  60         { EAI_NODATA,   FETCH_RESOLV,   "Host not found" },
  61 #endif
  62         { EAI_AGAIN,    FETCH_TEMP,     "Transient resolver failure" },
  63         { EAI_FAIL,     FETCH_RESOLV,   "Non-recoverable resolver failure" },
  64         { EAI_NONAME,   FETCH_RESOLV,   "No address record" },
  65         { -1,           FETCH_UNKNOWN,  "Unknown resolver error" }
  66 };
  67
  68 /* End-of-Line */
  69 static const char ENDL[2] = "\r\n";
  70
  71
  72 /*** Error-reporting functions ***********************************************/
  73
  74 /*
  75  * Map error code to string
  76  */
  77 static struct fetcherr *
  78 _fetch_finderr(struct fetcherr *p, int e)
  79 {
  80         while (p->num != -1 && p->num != e)
  81                 p++;
  82         return (p);
  83 }
  84
  85 /*
  86  * Set error code
  87  */
  88 void
  89 _fetch_seterr(struct fetcherr *p, int e)
  90 {
  91         p = _fetch_finderr(p, e);
  92         fetchLastErrCode = p->cat;
  93         snprintf(fetchLastErrString, MAXERRSTRING, "%s", p->string);
  94 }
  95
  96 /*
  97  * Set error code according to errno
  98  */
  99 void
 100 _fetch_syserr(void)
 101 {
 102         switch (errno) {
 103         case 0:
 104                 fetchLastErrCode = FETCH_OK;
 105                 break;
 106         case EPERM:
 107         case EACCES:
 108         case EROFS:
 109         case EAUTH:
 110         case ENEEDAUTH:
 111                 fetchLastErrCode = FETCH_AUTH;
 112                 break;
 113         case ENOENT:
 114         case EISDIR: /* XXX */
 115                 fetchLastErrCode = FETCH_UNAVAIL;
 116                 break;
 117         case ENOMEM:
 118                 fetchLastErrCode = FETCH_MEMORY;
 119                 break;
 120         case EBUSY:
 121         case EAGAIN:
 122                 fetchLastErrCode = FETCH_TEMP;
 123                 break;
 124         case EEXIST:
 125                 fetchLastErrCode = FETCH_EXISTS;
 126                 break;
 127         case ENOSPC:
 128                 fetchLastErrCode = FETCH_FULL;
 129                 break;
 130         case EADDRINUSE:
 131         case EADDRNOTAVAIL:
 132         case ENETDOWN:
 133         case ENETUNREACH:
 134         case ENETRESET:
 135         case EHOSTUNREACH:
 136                 fetchLastErrCode = FETCH_NETWORK;
 137                 break;
 138         case ECONNABORTED:
 139         case ECONNRESET:
 140                 fetchLastErrCode = FETCH_ABORT;
 141                 break;
 142         case ETIMEDOUT:
 143                 fetchLastErrCode = FETCH_TIMEOUT;
 144                 break;
 145         case ECONNREFUSED:
 146         case EHOSTDOWN:
 147                 fetchLastErrCode = FETCH_DOWN;
 148                 break;
 149 default:
 150                 fetchLastErrCode = FETCH_UNKNOWN;
 151         }
 152         snprintf(fetchLastErrString, MAXERRSTRING, "%s", strerror(errno));
 153 }
 154
 155
 156 /*
 157  * Emit status message
 158  */
 159 void
 160 _fetch_info(const char *fmt, ...)
 161 {
 162         va_list ap;
 163
 164         va_start(ap, fmt);
 165         vfprintf(stderr, fmt, ap);
 166         va_end(ap);
 167         fputc('\n', stderr);
 168 }
 169
 170
 171 /*** Network-related utility functions ***************************************/
 172
 173 /*
 174  * Return the default port for a scheme
 175  */
 176 int
 177 _fetch_default_port(const char *scheme)
 178 {
 179         struct servent *se;
 180
 181         if ((se = getservbyname(scheme, "tcp")) != NULL)
 182                 return (ntohs(se->s_port));
 183         if (strcasecmp(scheme, SCHEME_FTP) == 0)
 184                 return (FTP_DEFAULT_PORT);
 185         if (strcasecmp(scheme, SCHEME_HTTP) == 0)
 186                 return (HTTP_DEFAULT_PORT);
 187         return (0);
 188 }
 189
 190 /*
 191  * Return the default proxy port for a scheme
 192  */
 193 int
 194 _fetch_default_proxy_port(const char *scheme)
 195 {
 196         if (strcasecmp(scheme, SCHEME_FTP) == 0)
 197                 return (FTP_DEFAULT_PROXY_PORT);
 198         if (strcasecmp(scheme, SCHEME_HTTP) == 0)
 199                 return (HTTP_DEFAULT_PROXY_PORT);
 200         return (0);
 201 }
 202
 203
 204 /*
 205  * Create a connection for an existing descriptor.
 206  */
 207 conn_t *
 208 _fetch_reopen(int sd)
 209 {
 210         conn_t *conn;
 211
 212         /* allocate and fill connection structure */
 213         if ((conn = calloc(1, sizeof(*conn))) == NULL)
 214                 return (NULL);
 215         conn->sd = sd;
 216         ++conn->ref;
 217         return (conn);
 218 }
 219
 220
 221 /*
 222  * Bump a connection's reference count.
 223  */
 224 conn_t *
 225 _fetch_ref(conn_t *conn)
 226 {
 227
 228         ++conn->ref;
 229         return (conn);
 230 }
 231
 232
 233 /*
 234  * Bind a socket to a specific local address
 235  */
 236 int
 237 _fetch_bind(int sd, int af, const char *addr)
 238 {
 239         struct addrinfo hints, *res, *res0;
 240
 241         memset(&hints, 0, sizeof(hints));
 242         hints.ai_family = af;
 243         hints.ai_socktype = SOCK_STREAM;
 244         hints.ai_protocol = 0;
 245         if (getaddrinfo(addr, NULL, &hints, &res0) != 0)
 246                 return (-1);
 247         for (res = res0; res; res = res->ai_next)
 248                 if (bind(sd, res->ai_addr, res->ai_addrlen) == 0)
 249                         return (0);
 250         return (-1);
 251 }
 252
 253
 254 /*
 255  * Establish a TCP connection to the specified port on the specified host.
 256  */
 257 conn_t *
 258 _fetch_connect(const char *host, int port, int af, int verbose)
 259 {
 260         conn_t *conn;
 261         char pbuf[10];
 262         const char *bindaddr;
 263         struct addrinfo hints, *res, *res0;
 264         int sd, err;
 265
 266         DEBUG(fprintf(stderr, "---> %s:%d\n", host, port));
 267
 268         if (verbose)
 269                 _fetch_info("looking up %s", host);
 270
 271         /* look up host name and set up socket address structure */
 272         snprintf(pbuf, sizeof(pbuf), "%d", port);
 273         memset(&hints, 0, sizeof(hints));
 274         hints.ai_family = af;
 275         hints.ai_socktype = SOCK_STREAM;
 276         hints.ai_protocol = 0;
 277         if ((err = getaddrinfo(host, pbuf, &hints, &res0)) != 0) {
 278                 _netdb_seterr(err);
 279                 return (NULL);
 280         }
 281         bindaddr = getenv("FETCH_BIND_ADDRESS");
 282
 283         if (verbose)
 284                 _fetch_info("connecting to %s:%d", host, port);
 285
 286         /* try to connect */
 287         for (sd = -1, res = res0; res; sd = -1, res = res->ai_next) {
 288                 if ((sd = socket(res->ai_family, res->ai_socktype,
 289                          res->ai_protocol)) == -1)
 290                         continue;
 291                 if (bindaddr != NULL && *bindaddr != '\0' &&
 292                     _fetch_bind(sd, res->ai_family, bindaddr) != 0) {
 293                         _fetch_info("failed to bind to '%s'", bindaddr);
 294                         close(sd);
 295                         continue;
 296                 }
 297                 if (connect(sd, res->ai_addr, res->ai_addrlen) == 0)
 298                         break;
 299                 close(sd);
 300         }
 301         freeaddrinfo(res0);
 302         if (sd == -1) {
 303                 _fetch_syserr();
 304                 return (NULL);
 305         }
 306
 307         if ((conn = _fetch_reopen(sd)) == NULL) {
 308                 _fetch_syserr();
 309                 close(sd);
 310         }
 311         return (conn);
 312 }
 313
 314
 315 /*
 316  * Enable SSL on a connection.
 317  */
 318 int
 319 _fetch_ssl(conn_t *conn, int verbose)
 320 {
 321
 322 #ifdef WITH_SSL
 323         /* Init the SSL library and context */
 324         if (!SSL_library_init()){
 325                 fprintf(stderr, "SSL library init failed\n");
 326                 return (-1);
 327         }
 328
 329         SSL_load_error_strings();
 330
 331         conn->ssl_meth = SSLv23_client_method();
 332         conn->ssl_ctx = SSL_CTX_new(conn->ssl_meth);
 333         SSL_CTX_set_mode(conn->ssl_ctx, SSL_MODE_AUTO_RETRY);
 334
 335         conn->ssl = SSL_new(conn->ssl_ctx);
 336         if (conn->ssl == NULL){
 337                 fprintf(stderr, "SSL context creation failed\n");
 338                 return (-1);
 339         }
 340         SSL_set_fd(conn->ssl, conn->sd);
 341         if (SSL_connect(conn->ssl) == -1){
 342                 ERR_print_errors_fp(stderr);
 343                 return (-1);
 344         }
 345
 346         if (verbose) {
 347                 X509_NAME *name;
 348                 char *str;
 349
 350                 fprintf(stderr, "SSL connection established using %s\n",
 351                     SSL_get_cipher(conn->ssl));
 352                 conn->ssl_cert = SSL_get_peer_certificate(conn->ssl);
 353                 name = X509_get_subject_name(conn->ssl_cert);
 354                 str = X509_NAME_oneline(name, 0, 0);
 355                 printf("Certificate subject: %s\n", str);
 356                 free(str);
 357                 name = X509_get_issuer_name(conn->ssl_cert);
 358                 str = X509_NAME_oneline(name, 0, 0);
 359                 printf("Certificate issuer: %s\n", str);
 360                 free(str);
 361         }
 362
 363         return (0);
 364 #else
 365         /* LINTED */
 366         (void)conn;
 367         /* LINTED */
 368         (void)verbose;
 369         fprintf(stderr, "SSL support disabled\n");
 370         return (-1);
 371 #endif
 372 }
 373
 374
 375 /*
 376  * Read a character from a connection w/ timeout
 377  */
 378 ssize_t
 379 _fetch_read(conn_t *conn, char *buf, size_t len)
 380 {
 381         struct timeval now, timeout, wait;
 382         fd_set readfds;
 383         ssize_t rlen, total;
 384         int r;
 385
 386         if (fetchTimeout) {
 387                 FD_ZERO(&readfds);
 388                 gettimeofday(&timeout, NULL);
 389                 timeout.tv_sec += fetchTimeout;
 390         }
 391
 392         total = 0;
 393         while (len > 0) {
 394                 while (fetchTimeout && !FD_ISSET(conn->sd, &readfds)) {
 395                         FD_SET(conn->sd, &readfds);
 396                         gettimeofday(&now, NULL);
 397                         wait.tv_sec = timeout.tv_sec - now.tv_sec;
 398                         wait.tv_usec = timeout.tv_usec - now.tv_usec;
 399                         if (wait.tv_usec < 0) {
 400                                 wait.tv_usec += 1000000;
 401                                 wait.tv_sec--;
 402                         }
 403                         if (wait.tv_sec < 0) {
 404                                 errno = ETIMEDOUT;
 405                                 _fetch_syserr();
 406                                 return (-1);
 407                         }
 408                         errno = 0;
 409                         r = select(conn->sd + 1, &readfds, NULL, NULL, &wait);
 410                         if (r == -1) {
 411                                 if (errno == EINTR && fetchRestartCalls)
 412                                         continue;
 413                                 _fetch_syserr();
 414                                 return (-1);
 415                         }
 416                 }
 417 #ifdef WITH_SSL
 418                 if (conn->ssl != NULL)
 419                         rlen = SSL_read(conn->ssl, buf, len);
 420                 else
 421 #endif
 422                         rlen = read(conn->sd, buf, len);
 423                 if (rlen == 0)
 424                         break;
 425                 if (rlen < 0) {
 426                         if (errno == EINTR && fetchRestartCalls)
 427                                 continue;
 428                         return (-1);
 429                 }
 430                 len -= rlen;
 431                 buf += rlen;
 432                 total += rlen;
 433         }
 434         return (total);
 435 }
 436
 437
 438 /*
 439  * Read a line of text from a connection w/ timeout
 440  */
 441 #define MIN_BUF_SIZE 1024
 442
 443 int
 444 _fetch_getln(conn_t *conn)
 445 {
 446         char *tmp;
 447         size_t tmpsize;
 448         ssize_t len;
 449         char c;
 450
 451         if (conn->buf == NULL) {
 452                 if ((conn->buf = malloc(MIN_BUF_SIZE)) == NULL) {
 453                         errno = ENOMEM;
 454                         return (-1);
 455                 }
 456                 conn->bufsize = MIN_BUF_SIZE;
 457         }
 458
 459         conn->buf[0] = '\0';
 460         conn->buflen = 0;
 461
 462         do {
 463                 len = _fetch_read(conn, &c, 1);
 464                 if (len == -1)
 465                         return (-1);
 466                 if (len == 0)
 467                         break;
 468                 conn->buf[conn->buflen++] = c;
 469                 if (conn->buflen == conn->bufsize) {
 470                         tmp = conn->buf;
 471                         tmpsize = conn->bufsize * 2 + 1;
 472                         if ((tmp = realloc(tmp, tmpsize)) == NULL) {
 473                                 errno = ENOMEM;
 474                                 return (-1);
 475                         }
 476                         conn->buf = tmp;
 477                         conn->bufsize = tmpsize;
 478                 }
 479         } while (c != '\n');
 480
 481         conn->buf[conn->buflen] = '\0';
 482         DEBUG(fprintf(stderr, "<<< %s", conn->buf));
 483         return (0);
 484 }
 485
 486
 487 /*
 488  * Write to a connection w/ timeout
 489  */
 490 ssize_t
 491 _fetch_write(conn_t *conn, const char *buf, size_t len)
 492 {
 493         struct iovec iov;
 494
 495         iov.iov_base = __DECONST(char *, buf);
 496         iov.iov_len = len;
 497         return _fetch_writev(conn, &iov, 1);
 498 }
 499
 500 /*
 501  * Write a vector to a connection w/ timeout
 502  * Note: can modify the iovec.
 503  */
 504 ssize_t
 505 _fetch_writev(conn_t *conn, struct iovec *iov, int iovcnt)
 506 {
 507         struct timeval now, timeout, wait;
 508         fd_set writefds;
 509         ssize_t wlen, total;
 510         int r;
 511
 512         if (fetchTimeout) {
 513                 FD_ZERO(&writefds);
 514                 gettimeofday(&timeout, NULL);
 515                 timeout.tv_sec += fetchTimeout;
 516         }
 517
 518         total = 0;
 519         while (iovcnt > 0) {
 520                 while (fetchTimeout && !FD_ISSET(conn->sd, &writefds)) {
 521                         FD_SET(conn->sd, &writefds);
 522                         gettimeofday(&now, NULL);
 523                         wait.tv_sec = timeout.tv_sec - now.tv_sec;
 524                         wait.tv_usec = timeout.tv_usec - now.tv_usec;
 525                         if (wait.tv_usec < 0) {
 526                                 wait.tv_usec += 1000000;
 527                                 wait.tv_sec--;
 528                         }
 529                         if (wait.tv_sec < 0) {
 530                                 errno = ETIMEDOUT;
 531                                 _fetch_syserr();
 532                                 return (-1);
 533                         }
 534                         errno = 0;
 535                         r = select(conn->sd + 1, NULL, &writefds, NULL, &wait);
 536                         if (r == -1) {
 537                                 if (errno == EINTR && fetchRestartCalls)
 538                                         continue;
 539                                 return (-1);
 540                         }
 541                 }
 542                 errno = 0;
 543 #ifdef WITH_SSL
 544                 if (conn->ssl != NULL)
 545                         wlen = SSL_write(conn->ssl,
 546                             iov->iov_base, iov->iov_len);
 547                 else
 548 #endif
 549                         wlen = writev(conn->sd, iov, iovcnt);
 550                 if (wlen == 0) {
 551                         /* we consider a short write a failure */
 552                         errno = EPIPE;
 553                         _fetch_syserr();
 554                         return (-1);
 555                 }
 556                 if (wlen < 0) {
 557                         if (errno == EINTR && fetchRestartCalls)
 558                                 continue;
 559                         return (-1);
 560                 }
 561                 total += wlen;
 562                 while (iovcnt > 0 && wlen >= (ssize_t)iov->iov_len) {
 563                         wlen -= iov->iov_len;
 564                         iov++;
 565                         iovcnt--;
 566                 }
 567                 if (iovcnt > 0) {
 568                         iov->iov_len -= wlen;
 569                         iov->iov_base = (__DECONST(char *, iov->iov_base)) + wlen;
 570                 }
 571         }
 572         return (total);
 573 }
 574
 575
 576 /*
 577  * Write a line of text to a connection w/ timeout
 578  */
 579 int
 580 _fetch_putln(conn_t *conn, const char *str, size_t len)
 581 {
 582         struct iovec iov[2];
 583         int ret;
 584
 585         DEBUG(fprintf(stderr, ">>> %s\n", str));
 586         iov[0].iov_base = __DECONST(char *, str);
 587         iov[0].iov_len = len;
 588         iov[1].iov_base = __DECONST(char *, ENDL);
 589         iov[1].iov_len = sizeof(ENDL);
 590         if (len == 0)
 591                 ret = _fetch_writev(conn, &iov[1], 1);
 592         else
 593                 ret = _fetch_writev(conn, iov, 2);
 594         if (ret == -1)
 595                 return (-1);
 596         return (0);
 597 }
 598
 599
 600 /*
 601  * Close connection
 602  */
 603 int
 604 _fetch_close(conn_t *conn)
 605 {
 606         int ret;
 607
 608         if (--conn->ref > 0)
 609                 return (0);
 610         ret = close(conn->sd);
 611         free(conn->buf);
 612         free(conn);
 613         return (ret);
 614 }
 615
 616
 617 /*** Directory-related utility functions *************************************/
 618
 619 int
 620 _fetch_add_entry(struct url_ent **p, int *size, int *len,
 621     const char *name, struct url_stat *us)
 622 {
 623         struct url_ent *tmp;
 624
 625         if (*p == NULL) {
 626                 *size = 0;
 627                 *len = 0;
 628         }
 629
 630         if (*len >= *size - 1) {
 631                 tmp = realloc(*p, (*size * 2 + 1) * sizeof(**p));
 632                 if (tmp == NULL) {
 633                         errno = ENOMEM;
 634                         _fetch_syserr();
 635                         return (-1);
 636                 }
 637                 *size = (*size * 2 + 1);
 638                 *p = tmp;
 639         }
 640
 641         tmp = *p + *len;
 642         snprintf(tmp->name, PATH_MAX, "%s", name);
 643         bcopy(us, &tmp->stat, sizeof(*us));
 644
 645         (*len)++;
 646         (++tmp)->name[0] = 0;
 647
 648         return (0);
 649 }
 650
 651
 652 /*** Authentication-related utility functions ********************************/
 653
 654 static const char *
 655 _fetch_read_word(FILE *f)
 656 {
 657         static char word[1024];
 658
 659         if (fscanf(f, " %1024s ", word) != 1)
 660                 return (NULL);
 661         return (word);
 662 }
 663
 664 /*
 665  * Get authentication data for a URL from .netrc
 666  */
 667 int
 668 _fetch_netrc_auth(struct url *url)
 669 {
 670         char fn[PATH_MAX];
 671         const char *word;
 672         char *p;
 673         FILE *f;
 674
 675         if ((p = getenv("NETRC")) != NULL) {
 676                 if (snprintf(fn, sizeof(fn), "%s", p) >= (int)sizeof(fn)) {
 677                         _fetch_info("$NETRC specifies a file name "
 678                             "longer than PATH_MAX");
 679                         return (-1);
 680                 }
 681         } else {
 682                 if ((p = getenv("HOME")) != NULL) {
 683                         struct passwd *pwd;
 684
 685                         if ((pwd = getpwuid(getuid())) == NULL ||
 686                             (p = pwd->pw_dir) == NULL)
 687                                 return (-1);
 688                 }
 689                 if (snprintf(fn, sizeof(fn), "%s/.netrc", p) >= (int)sizeof(fn))
 690                         return (-1);
 691         }
 692
 693         if ((f = fopen(fn, "r")) == NULL)
 694                 return (-1);
 695         while ((word = _fetch_read_word(f)) != NULL) {
 696                 if (strcmp(word, "default") == 0) {
 697                         DEBUG(_fetch_info("Using default .netrc settings"));
 698                         break;
 699                 }
 700                 if (strcmp(word, "machine") == 0 &&
 701                     (word = _fetch_read_word(f)) != NULL &&
 702                     strcasecmp(word, url->host) == 0) {
 703                         DEBUG(_fetch_info("Using .netrc settings for %s", word));
 704                         break;
 705                 }
 706         }
 707         if (word == NULL)
 708                 goto ferr;
 709         while ((word = _fetch_read_word(f)) != NULL) {
 710                 if (strcmp(word, "login") == 0) {
 711                         if ((word = _fetch_read_word(f)) == NULL)
 712                                 goto ferr;
 713                         if (snprintf(url->user, sizeof(url->user),
 714                                 "%s", word) > (int)sizeof(url->user)) {
 715                                 _fetch_info("login name in .netrc is too long");
 716                                 url->user[0] = '\0';
 717                         }
 718                 } else if (strcmp(word, "password") == 0) {
 719                         if ((word = _fetch_read_word(f)) == NULL)
 720                                 goto ferr;
 721                         if (snprintf(url->pwd, sizeof(url->pwd),
 722                                 "%s", word) > (int)sizeof(url->pwd)) {
 723                                 _fetch_info("password in .netrc is too long");
 724                                 url->pwd[0] = '\0';
 725                         }
 726                 } else if (strcmp(word, "account") == 0) {
 727                         if ((word = _fetch_read_word(f)) == NULL)
 728                                 goto ferr;
 729                         /* XXX not supported! */
 730                 } else {
 731                         break;
 732                 }
 733         }
 734         fclose(f);
 735         return (0);
 736  ferr:
 737         fclose(f);
 738         return (-1);
 739 }