lib/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  * $FreeBSD: src/lib/libfetch/common.c,v 1.50 2005/02/16 12:46:46 des Exp $
  29  * $DragonFly: src/lib/libfetch/common.c,v 1.4 2007/08/05 21:48:12 swildner Exp $
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/socket.h>
  34 #include <sys/time.h>
  35 #include <sys/uio.h>
  36 #include <netinet/in.h>
  37
  38 #include <errno.h>
  39 #include <netdb.h>
  40 #include <pwd.h>
  41 #include <stdarg.h>
  42 #include <stdlib.h>
  43 #include <stdio.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46
  47 #include "fetch.h"
  48 #include "common.h"
  49
  50
  51 /*** Local data **************************************************************/
  52
  53 /*
  54  * Error messages for resolver errors
  55  */
  56 static struct fetcherr _netdb_errlist[] = {
  57 #ifdef EAI_NODATA
  58         { EAI_NODATA,   FETCH_RESOLV,   "Host not found" },
  59 #endif
  60         { EAI_AGAIN,    FETCH_TEMP,     "Transient resolver failure" },
  61         { EAI_FAIL,     FETCH_RESOLV,   "Non-recoverable resolver failure" },
  62         { EAI_NONAME,   FETCH_RESOLV,   "No address record" },
  63         { -1,           FETCH_UNKNOWN,  "Unknown resolver error" }
  64 };
  65
  66 /* End-of-Line */
  67 static const char ENDL[2] = "\r\n";
  68
  69
  70 /*** Error-reporting functions ***********************************************/
  71
  72 /*
  73  * Map error code to string
  74  */
  75 static struct fetcherr *
  76 _fetch_finderr(struct fetcherr *p, int e)
  77 {
  78         while (p->num != -1 && p->num != e)
  79                 p++;
  80         return (p);
  81 }
  82
  83 /*
  84  * Set error code
  85  */
  86 void
  87 _fetch_seterr(struct fetcherr *p, int e)
  88 {
  89         p = _fetch_finderr(p, e);
  90         fetchLastErrCode = p->cat;
  91         snprintf(fetchLastErrString, MAXERRSTRING, "%s", p->string);
  92 }
  93
  94 /*
  95  * Set error code according to errno
  96  */
  97 void
  98 _fetch_syserr(void)
  99 {
 100         switch (errno) {
 101         case 0:
 102                 fetchLastErrCode = FETCH_OK;
 103                 break;
 104         case EPERM:
 105         case EACCES:
 106         case EROFS:
 107         case EAUTH:
 108         case ENEEDAUTH:
 109                 fetchLastErrCode = FETCH_AUTH;
 110                 break;
 111         case ENOENT:
 112         case EISDIR: /* XXX */
 113                 fetchLastErrCode = FETCH_UNAVAIL;
 114                 break;
 115         case ENOMEM:
 116                 fetchLastErrCode = FETCH_MEMORY;
 117                 break;
 118         case EBUSY:
 119         case EAGAIN:
 120                 fetchLastErrCode = FETCH_TEMP;
 121                 break;
 122         case EEXIST:
 123                 fetchLastErrCode = FETCH_EXISTS;
 124                 break;
 125         case ENOSPC:
 126                 fetchLastErrCode = FETCH_FULL;
 127                 break;
 128         case EADDRINUSE:
 129         case EADDRNOTAVAIL:
 130         case ENETDOWN:
 131         case ENETUNREACH:
 132         case ENETRESET:
 133         case EHOSTUNREACH:
 134                 fetchLastErrCode = FETCH_NETWORK;
 135                 break;
 136         case ECONNABORTED:
 137         case ECONNRESET:
 138                 fetchLastErrCode = FETCH_ABORT;
 139                 break;
 140         case ETIMEDOUT:
 141                 fetchLastErrCode = FETCH_TIMEOUT;
 142                 break;
 143         case ECONNREFUSED:
 144         case EHOSTDOWN:
 145                 fetchLastErrCode = FETCH_DOWN;
 146                 break;
 147 default:
 148                 fetchLastErrCode = FETCH_UNKNOWN;
 149         }
 150         snprintf(fetchLastErrString, MAXERRSTRING, "%s", strerror(errno));
 151 }
 152
 153
 154 /*
 155  * Emit status message
 156  */
 157 void
 158 _fetch_info(const char *fmt, ...)
 159 {
 160         va_list ap;
 161
 162         va_start(ap, fmt);
 163         vfprintf(stderr, fmt, ap);
 164         va_end(ap);
 165         fputc('\n', stderr);
 166 }
 167
 168
 169 /*** Network-related utility functions ***************************************/
 170
 171 /*
 172  * Return the default port for a scheme
 173  */
 174 int
 175 _fetch_default_port(const char *scheme)
 176 {
 177         struct servent *se;
 178
 179         if ((se = getservbyname(scheme, "tcp")) != NULL)
 180                 return (ntohs(se->s_port));
 181         if (strcasecmp(scheme, SCHEME_FTP) == 0)
 182                 return (FTP_DEFAULT_PORT);
 183         if (strcasecmp(scheme, SCHEME_HTTP) == 0)
 184                 return (HTTP_DEFAULT_PORT);
 185         return (0);
 186 }
 187
 188 /*
 189  * Return the default proxy port for a scheme
 190  */
 191 int
 192 _fetch_default_proxy_port(const char *scheme)
 193 {
 194         if (strcasecmp(scheme, SCHEME_FTP) == 0)
 195                 return (FTP_DEFAULT_PROXY_PORT);
 196         if (strcasecmp(scheme, SCHEME_HTTP) == 0)
 197                 return (HTTP_DEFAULT_PROXY_PORT);
 198         return (0);
 199 }
 200
 201
 202 /*
 203  * Create a connection for an existing descriptor.
 204  */
 205 conn_t *
 206 _fetch_reopen(int sd)
 207 {
 208         conn_t *conn;
 209
 210         /* allocate and fill connection structure */
 211         if ((conn = calloc(1, sizeof(*conn))) == NULL)
 212                 return (NULL);
 213         conn->sd = sd;
 214         ++conn->ref;
 215         return (conn);
 216 }
 217
 218
 219 /*
 220  * Bump a connection's reference count.
 221  */
 222 conn_t *
 223 _fetch_ref(conn_t *conn)
 224 {
 225
 226         ++conn->ref;
 227         return (conn);
 228 }
 229
 230
 231 /*
 232  * Bind a socket to a specific local address
 233  */
 234 int
 235 _fetch_bind(int sd, int af, const char *addr)
 236 {
 237         struct addrinfo hints, *res, *res0;
 238         int err;
 239
 240         memset(&hints, 0, sizeof(hints));
 241         hints.ai_family = af;
 242         hints.ai_socktype = SOCK_STREAM;
 243         hints.ai_protocol = 0;
 244         if ((err = getaddrinfo(addr, NULL, &hints, &res0)) != 0)
 245                 return (-1);
 246         for (res = res0; res; res = res->ai_next)
 247                 if (bind(sd, res->ai_addr, res->ai_addrlen) == 0)
 248                         return (0);
 249         return (-1);
 250 }
 251
 252
 253 /*
 254  * Establish a TCP connection to the specified port on the specified host.
 255  */
 256 conn_t *
 257 _fetch_connect(const char *host, int port, int af, int verbose)
 258 {
 259         conn_t *conn;
 260         char pbuf[10];
 261         const char *bindaddr;
 262         struct addrinfo hints, *res, *res0;
 263         int sd, err;
 264
 265         DEBUG(fprintf(stderr, "---> %s:%d\n", host, port));
 266
 267         if (verbose)
 268                 _fetch_info("looking up %s", host);
 269
 270         /* look up host name and set up socket address structure */
 271         snprintf(pbuf, sizeof(pbuf), "%d", port);
 272         memset(&hints, 0, sizeof(hints));
 273         hints.ai_family = af;
 274         hints.ai_socktype = SOCK_STREAM;
 275         hints.ai_protocol = 0;
 276         if ((err = getaddrinfo(host, pbuf, &hints, &res0)) != 0) {
 277                 _netdb_seterr(err);
 278                 return (NULL);
 279         }
 280         bindaddr = getenv("FETCH_BIND_ADDRESS");
 281
 282         if (verbose)
 283                 _fetch_info("connecting to %s:%d", host, port);
 284
 285         /* try to connect */
 286         for (sd = -1, res = res0; res; sd = -1, res = res->ai_next) {
 287                 if ((sd = socket(res->ai_family, res->ai_socktype,
 288                          res->ai_protocol)) == -1)
 289                         continue;
 290                 if (bindaddr != NULL && *bindaddr != '\0' &&
 291                     _fetch_bind(sd, res->ai_family, bindaddr) != 0) {
 292                         _fetch_info("failed to bind to '%s'", bindaddr);
 293                         close(sd);
 294                         continue;
 295                 }
 296                 if (connect(sd, res->ai_addr, res->ai_addrlen) == 0)
 297                         break;
 298                 close(sd);
 299         }
 300         freeaddrinfo(res0);
 301         if (sd == -1) {
 302                 _fetch_syserr();
 303                 return (NULL);
 304         }
 305
 306         if ((conn = _fetch_reopen(sd)) == NULL) {
 307                 _fetch_syserr();
 308                 close(sd);
 309         }
 310         return (conn);
 311 }
 312
 313
 314 /*
 315  * Enable SSL on a connection.
 316  */
 317 int
 318 _fetch_ssl(conn_t *conn, int verbose)
 319 {
 320
 321 #ifdef WITH_SSL
 322         /* Init the SSL library and context */
 323         if (!SSL_library_init()){
 324                 fprintf(stderr, "SSL library init failed\n");
 325                 return (-1);
 326         }
 327
 328         SSL_load_error_strings();
 329
 330         conn->ssl_meth = SSLv23_client_method();
 331         conn->ssl_ctx = SSL_CTX_new(conn->ssl_meth);
 332         SSL_CTX_set_mode(conn->ssl_ctx, SSL_MODE_AUTO_RETRY);
 333
 334         conn->ssl = SSL_new(conn->ssl_ctx);
 335         if (conn->ssl == NULL){
 336                 fprintf(stderr, "SSL context creation failed\n");
 337                 return (-1);
 338         }
 339         SSL_set_fd(conn->ssl, conn->sd);
 340         if (SSL_connect(conn->ssl) == -1){
 341                 ERR_print_errors_fp(stderr);
 342                 return (-1);
 343         }
 344
 345         if (verbose) {
 346                 X509_NAME *name;
 347                 char *str;
 348
 349                 fprintf(stderr, "SSL connection established using %s\n",
 350                     SSL_get_cipher(conn->ssl));
 351                 conn->ssl_cert = SSL_get_peer_certificate(conn->ssl);
 352                 name = X509_get_subject_name(conn->ssl_cert);
 353                 str = X509_NAME_oneline(name, 0, 0);
 354                 printf("Certificate subject: %s\n", str);
 355                 free(str);
 356                 name = X509_get_issuer_name(conn->ssl_cert);
 357                 str = X509_NAME_oneline(name, 0, 0);
 358                 printf("Certificate issuer: %s\n", str);
 359                 free(str);
 360         }
 361
 362         return (0);
 363 #else
 364         (void)conn;
 365         (void)verbose;
 366         fprintf(stderr, "SSL support disabled\n");
 367         return (-1);
 368 #endif
 369 }
 370
 371
 372 /*
 373  * Read a character from a connection w/ timeout
 374  */
 375 ssize_t
 376 _fetch_read(conn_t *conn, char *buf, size_t len)
 377 {
 378         struct timeval now, timeout, wait;
 379         fd_set readfds;
 380         ssize_t rlen, total;
 381         int r;
 382
 383         if (fetchTimeout) {
 384                 FD_ZERO(&readfds);
 385                 gettimeofday(&timeout, NULL);
 386                 timeout.tv_sec += fetchTimeout;
 387         }
 388
 389         total = 0;
 390         while (len > 0) {
 391                 while (fetchTimeout && !FD_ISSET(conn->sd, &readfds)) {
 392                         FD_SET(conn->sd, &readfds);
 393                         gettimeofday(&now, NULL);
 394                         wait.tv_sec = timeout.tv_sec - now.tv_sec;
 395                         wait.tv_usec = timeout.tv_usec - now.tv_usec;
 396                         if (wait.tv_usec < 0) {
 397                                 wait.tv_usec += 1000000;
 398                                 wait.tv_sec--;
 399                         }
 400                         if (wait.tv_sec < 0) {
 401                                 errno = ETIMEDOUT;
 402                                 _fetch_syserr();
 403                                 return (-1);
 404                         }
 405                         errno = 0;
 406                         r = select(conn->sd + 1, &readfds, NULL, NULL, &wait);
 407                         if (r == -1) {
 408                                 if (errno == EINTR && fetchRestartCalls)
 409                                         continue;
 410                                 _fetch_syserr();
 411                                 return (-1);
 412                         }
 413                 }
 414 #ifdef WITH_SSL
 415                 if (conn->ssl != NULL)
 416                         rlen = SSL_read(conn->ssl, buf, len);
 417                 else
 418 #endif
 419                         rlen = read(conn->sd, buf, len);
 420                 if (rlen == 0)
 421                         break;
 422                 if (rlen < 0) {
 423                         if (errno == EINTR && fetchRestartCalls)
 424                                 continue;
 425                         return (-1);
 426                 }
 427                 len -= rlen;
 428                 buf += rlen;
 429                 total += rlen;
 430         }
 431         return (total);
 432 }
 433
 434
 435 /*
 436  * Read a line of text from a connection w/ timeout
 437  */
 438 #define MIN_BUF_SIZE 1024
 439
 440 int
 441 _fetch_getln(conn_t *conn)
 442 {
 443         char *tmp;
 444         size_t tmpsize;
 445         ssize_t len;
 446         char c;
 447
 448         if (conn->buf == NULL) {
 449                 if ((conn->buf = malloc(MIN_BUF_SIZE)) == NULL) {
 450                         errno = ENOMEM;
 451                         return (-1);
 452                 }
 453                 conn->bufsize = MIN_BUF_SIZE;
 454         }
 455
 456         conn->buf[0] = '\0';
 457         conn->buflen = 0;
 458
 459         do {
 460                 len = _fetch_read(conn, &c, 1);
 461                 if (len == -1)
 462                         return (-1);
 463                 if (len == 0)
 464                         break;
 465                 conn->buf[conn->buflen++] = c;
 466                 if (conn->buflen == conn->bufsize) {
 467                         tmp = conn->buf;
 468                         tmpsize = conn->bufsize * 2 + 1;
 469                         if ((tmp = realloc(tmp, tmpsize)) == NULL) {
 470                                 errno = ENOMEM;
 471                                 return (-1);
 472                         }
 473                         conn->buf = tmp;
 474                         conn->bufsize = tmpsize;
 475                 }
 476         } while (c != '\n');
 477
 478         conn->buf[conn->buflen] = '\0';
 479         DEBUG(fprintf(stderr, "<<< %s", conn->buf));
 480         return (0);
 481 }
 482
 483
 484 /*
 485  * Write to a connection w/ timeout
 486  */
 487 ssize_t
 488 _fetch_write(conn_t *conn, const char *buf, size_t len)
 489 {
 490         struct iovec iov;
 491
 492         iov.iov_base = __DECONST(char *, buf);
 493         iov.iov_len = len;
 494         return _fetch_writev(conn, &iov, 1);
 495 }
 496
 497 /*
 498  * Write a vector to a connection w/ timeout
 499  * Note: can modify the iovec.
 500  */
 501 ssize_t
 502 _fetch_writev(conn_t *conn, struct iovec *iov, int iovcnt)
 503 {
 504         struct timeval now, timeout, wait;
 505         fd_set writefds;
 506         ssize_t wlen, total;
 507         int r;
 508
 509         if (fetchTimeout) {
 510                 FD_ZERO(&writefds);
 511                 gettimeofday(&timeout, NULL);
 512                 timeout.tv_sec += fetchTimeout;
 513         }
 514
 515         total = 0;
 516         while (iovcnt > 0) {
 517                 while (fetchTimeout && !FD_ISSET(conn->sd, &writefds)) {
 518                         FD_SET(conn->sd, &writefds);
 519                         gettimeofday(&now, NULL);
 520                         wait.tv_sec = timeout.tv_sec - now.tv_sec;
 521                         wait.tv_usec = timeout.tv_usec - now.tv_usec;
 522                         if (wait.tv_usec < 0) {
 523                                 wait.tv_usec += 1000000;
 524                                 wait.tv_sec--;
 525                         }
 526                         if (wait.tv_sec < 0) {
 527                                 errno = ETIMEDOUT;
 528                                 _fetch_syserr();
 529                                 return (-1);
 530                         }
 531                         errno = 0;
 532                         r = select(conn->sd + 1, NULL, &writefds, NULL, &wait);
 533                         if (r == -1) {
 534                                 if (errno == EINTR && fetchRestartCalls)
 535                                         continue;
 536                                 return (-1);
 537                         }
 538                 }
 539                 errno = 0;
 540 #ifdef WITH_SSL
 541                 if (conn->ssl != NULL)
 542                         wlen = SSL_write(conn->ssl,
 543                             iov->iov_base, iov->iov_len);
 544                 else
 545 #endif
 546                         wlen = writev(conn->sd, iov, iovcnt);
 547                 if (wlen == 0) {
 548                         /* we consider a short write a failure */
 549                         errno = EPIPE;
 550                         _fetch_syserr();
 551                         return (-1);
 552                 }
 553                 if (wlen < 0) {
 554                         if (errno == EINTR && fetchRestartCalls)
 555                                 continue;
 556                         return (-1);
 557                 }
 558                 total += wlen;
 559                 while (iovcnt > 0 && wlen >= (ssize_t)iov->iov_len) {
 560                         wlen -= iov->iov_len;
 561                         iov++;
 562                         iovcnt--;
 563                 }
 564                 if (iovcnt > 0) {
 565                         iov->iov_len -= wlen;
 566                         iov->iov_base = __DECONST(char *, iov->iov_base) + wlen;
 567                 }
 568         }
 569         return (total);
 570 }
 571
 572
 573 /*
 574  * Write a line of text to a connection w/ timeout
 575  */
 576 int
 577 _fetch_putln(conn_t *conn, const char *str, size_t len)
 578 {
 579         struct iovec iov[2];
 580         int ret;
 581
 582         DEBUG(fprintf(stderr, ">>> %s\n", str));
 583         iov[0].iov_base = __DECONST(char *, str);
 584         iov[0].iov_len = len;
 585         iov[1].iov_base = __DECONST(char *, ENDL);
 586         iov[1].iov_len = sizeof(ENDL);
 587         if (len == 0)
 588                 ret = _fetch_writev(conn, &iov[1], 1);
 589         else
 590                 ret = _fetch_writev(conn, iov, 2);
 591         if (ret == -1)
 592                 return (-1);
 593         return (0);
 594 }
 595
 596
 597 /*
 598  * Close connection
 599  */
 600 int
 601 _fetch_close(conn_t *conn)
 602 {
 603         int ret;
 604
 605         if (--conn->ref > 0)
 606                 return (0);
 607         ret = close(conn->sd);
 608         free(conn->buf);
 609         free(conn);
 610         return (ret);
 611 }
 612
 613
 614 /*** Directory-related utility functions *************************************/
 615
 616 int
 617 _fetch_add_entry(struct url_ent **p, int *size, int *len,
 618     const char *name, struct url_stat *us)
 619 {
 620         struct url_ent *tmp;
 621
 622         if (*p == NULL) {
 623                 *size = 0;
 624                 *len = 0;
 625         }
 626
 627         if (*len >= *size - 1) {
 628                 tmp = realloc(*p, (*size * 2 + 1) * sizeof(**p));
 629                 if (tmp == NULL) {
 630                         errno = ENOMEM;
 631                         _fetch_syserr();
 632                         return (-1);
 633                 }
 634                 *size = (*size * 2 + 1);
 635                 *p = tmp;
 636         }
 637
 638         tmp = *p + *len;
 639         snprintf(tmp->name, PATH_MAX, "%s", name);
 640         bcopy(us, &tmp->stat, sizeof(*us));
 641
 642         (*len)++;
 643         (++tmp)->name[0] = 0;
 644
 645         return (0);
 646 }
 647
 648
 649 /*** Authentication-related utility functions ********************************/
 650
 651 static const char *
 652 _fetch_read_word(FILE *f)
 653 {
 654         static char word[1024];
 655
 656         if (fscanf(f, " %1024s ", word) != 1)
 657                 return (NULL);
 658         return (word);
 659 }
 660
 661 /*
 662  * Get authentication data for a URL from .netrc
 663  */
 664 int
 665 _fetch_netrc_auth(struct url *url)
 666 {
 667         char fn[PATH_MAX];
 668         const char *word;
 669         char *p;
 670         FILE *f;
 671
 672         if ((p = getenv("NETRC")) != NULL) {
 673                 if (snprintf(fn, sizeof(fn), "%s", p) >= (int)sizeof(fn)) {
 674                         _fetch_info("$NETRC specifies a file name "
 675                             "longer than PATH_MAX");
 676                         return (-1);
 677                 }
 678         } else {
 679                 if ((p = getenv("HOME")) != NULL) {
 680                         struct passwd *pwd;
 681
 682                         if ((pwd = getpwuid(getuid())) == NULL ||
 683                             (p = pwd->pw_dir) == NULL)
 684                                 return (-1);
 685                 }
 686                 if (snprintf(fn, sizeof(fn), "%s/.netrc", p) >= (int)sizeof(fn))
 687                         return (-1);
 688         }
 689
 690         if ((f = fopen(fn, "r")) == NULL)
 691                 return (-1);
 692         while ((word = _fetch_read_word(f)) != NULL) {
 693                 if (strcmp(word, "default") == 0) {
 694                         DEBUG(_fetch_info("Using default .netrc settings"));
 695                         break;
 696                 }
 697                 if (strcmp(word, "machine") == 0 &&
 698                     (word = _fetch_read_word(f)) != NULL &&
 699                     strcasecmp(word, url->host) == 0) {
 700                         DEBUG(_fetch_info("Using .netrc settings for %s", word));
 701                         break;
 702                 }
 703         }
 704         if (word == NULL)
 705                 goto ferr;
 706         while ((word = _fetch_read_word(f)) != NULL) {
 707                 if (strcmp(word, "login") == 0) {
 708                         if ((word = _fetch_read_word(f)) == NULL)
 709                                 goto ferr;
 710                         if (snprintf(url->user, sizeof(url->user),
 711                                 "%s", word) > (int)sizeof(url->user)) {
 712                                 _fetch_info("login name in .netrc is too long");
 713                                 url->user[0] = '\0';
 714                         }
 715                 } else if (strcmp(word, "password") == 0) {
 716                         if ((word = _fetch_read_word(f)) == NULL)
 717                                 goto ferr;
 718                         if (snprintf(url->pwd, sizeof(url->pwd),
 719                                 "%s", word) > (int)sizeof(url->pwd)) {
 720                                 _fetch_info("password in .netrc is too long");
 721                                 url->pwd[0] = '\0';
 722                         }
 723                 } else if (strcmp(word, "account") == 0) {
 724                         if ((word = _fetch_read_word(f)) == NULL)
 725                                 goto ferr;
 726                         /* XXX not supported! */
 727                 } else {
 728                         break;
 729                 }
 730         }
 731         fclose(f);
 732         return (0);
 733  ferr:
 734         fclose(f);
 735         return (-1);
 736 }