cups/http.c

   1 /*
   2  * "$Id: http.c,v 1.82.2.38 2003/08/28 15:16:26 mike Exp $"
   3  *
   4  *   HTTP routines for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 1997-2003 by Easy Software Products, all rights reserved.
   7  *
   8  *   These coded instructions, statements, and computer programs are the
   9  *   property of Easy Software Products and are protected by Federal
  10  *   copyright law.  Distribution and use rights are outlined in the file
  11  *   "LICENSE.txt" which should have been included with this file.  If this
  12  *   file is missing or damaged please contact Easy Software Products
  13  *   at:
  14  *
  15  *       Attn: CUPS Licensing Information
  16  *       Easy Software Products
  17  *       44141 Airport View Drive, Suite 204
  18  *       Hollywood, Maryland 20636-3111 USA
  19  *
  20  *       Voice: (301) 373-9603
  21  *       EMail: cups-info@cups.org
  22  *         WWW: http://www.cups.org
  23  *
  24  *   This file is subject to the Apple OS-Developed Software exception.
  25  *
  26  * Contents:
  27  *
  28  *   httpInitialize()     - Initialize the HTTP interface library and set the
  29  *                          default HTTP proxy (if any).
  30  *   httpCheck()          - Check to see if there is a pending response from
  31  *                          the server.
  32  *   httpClearCookie()    - Clear the cookie value(s).
  33  *   httpClose()          - Close an HTTP connection...
  34  *   httpConnect()        - Connect to a HTTP server.
  35  *   httpConnectEncrypt() - Connect to a HTTP server using encryption.
  36  *   httpEncryption()     - Set the required encryption on the link.
  37  *   httpReconnect()      - Reconnect to a HTTP server...
  38  *   httpSetField()       - Set the value of an HTTP header.
  39  *   httpDelete()         - Send a DELETE request to the server.
  40  *   httpGet()            - Send a GET request to the server.
  41  *   httpHead()           - Send a HEAD request to the server.
  42  *   httpOptions()        - Send an OPTIONS request to the server.
  43  *   httpPost()           - Send a POST request to the server.
  44  *   httpPut()            - Send a PUT request to the server.
  45  *   httpTrace()          - Send an TRACE request to the server.
  46  *   httpFlush()          - Flush data from a HTTP connection.
  47  *   httpRead()           - Read data from a HTTP connection.
  48  *   httpSetCookie()      - Set the cookie value(s)...
  49  *   httpWait()           - Wait for data available on a connection.
  50  *   httpWrite()          - Write data to a HTTP connection.
  51  *   httpGets()           - Get a line of text from a HTTP connection.
  52  *   httpPrintf()         - Print a formatted string to a HTTP connection.
  53  *   httpStatus()         - Return a short string describing a HTTP status code.
  54  *   httpGetDateString()  - Get a formatted date/time string from a time value.
  55  *   httpGetDateTime()    - Get a time value from a formatted date/time string.
  56  *   httpUpdate()         - Update the current HTTP state for incoming data.
  57  *   httpDecode64()       - Base64-decode a string.
  58  *   httpEncode64()       - Base64-encode a string.
  59  *   httpGetLength()      - Get the amount of data remaining from the
  60  *                          content-length or transfer-encoding fields.
  61  *   http_field()         - Return the field index for a field name.
  62  *   http_send()          - Send a request with all fields and the trailing
  63  *                          blank line.
  64  *   http_wait()          - Wait for data available on a connection.
  65  *   http_upgrade()       - Force upgrade to TLS encryption.
  66  *   http_setup_ssl()     - Set up SSL/TLS on a connection.
  67  *   http_shutdown_ssl()  - Shut down SSL/TLS on a connection.
  68  *   http_read_ssl()      - Read from a SSL/TLS connection.
  69  *   http_write_ssl()     - Write to a SSL/TLS connection.
  70  *   CDSAReadFunc()       - Read function for CDSA decryption code.
  71  *   CDSAWriteFunc()      - Write function for CDSA encryption code.
  72  */
  73
  74 /*
  75  * Include necessary headers...
  76  */
  77
  78 #include "http-private.h"
  79
  80 #include <stdio.h>
  81 #include <stdlib.h>
  82 #include <stdarg.h>
  83 #include <ctype.h>
  84 #include "string.h"
  85 #include <fcntl.h>
  86 #include <errno.h>
  87
  88 #include "ipp.h"
  89 #include "debug.h"
  90
  91 #ifndef WIN32
  92 #  include <signal.h>
  93 #  include <sys/time.h>
  94 #  include <sys/resource.h>
  95 #endif /* !WIN32 */
  96
  97
  98 /*
  99  * Some operating systems have done away with the Fxxxx constants for
 100  * the fcntl() call; this works around that "feature"...
 101  */
 102
 103 #ifndef FNONBLK
 104 #  define FNONBLK O_NONBLOCK
 105 #endif /* !FNONBLK */
 106
 107
 108 /*
 109  * Local functions...
 110  */
 111
 112 static http_field_t     http_field(const char *name);
 113 static int              http_send(http_t *http, http_state_t request,
 114                                   const char *uri);
 115 static int              http_wait(http_t *http, int msec);
 116 #ifdef HAVE_SSL
 117 static int              http_upgrade(http_t *http);
 118 static int              http_setup_ssl(http_t *http);
 119 static void             http_shutdown_ssl(http_t *http);
 120 static int              http_read_ssl(http_t *http, char *buf, int len);
 121 static int              http_write_ssl(http_t *http, const char *buf, int len);
 122 #  ifdef HAVE_CDSASSL
 123 static OSStatus         CDSAReadFunc(SSLConnectionRef connection, void *data, size_t *dataLength);
 124 static OSStatus         CDSAWriteFunc(SSLConnectionRef connection, const void *data, size_t *dataLength);
 125 #  endif /* HAVE_CDSASSL */
 126 #endif /* HAVE_SSL */
 127
 128
 129 /*
 130  * Local globals...
 131  */
 132
 133 static const char * const http_fields[] =
 134                         {
 135                           "Accept-Language",
 136                           "Accept-Ranges",
 137                           "Authorization",
 138                           "Connection",
 139                           "Content-Encoding",
 140                           "Content-Language",
 141                           "Content-Length",
 142                           "Content-Location",
 143                           "Content-MD5",
 144                           "Content-Range",
 145                           "Content-Type",
 146                           "Content-Version",
 147                           "Date",
 148                           "Host",
 149                           "If-Modified-Since",
 150                           "If-Unmodified-since",
 151                           "Keep-Alive",
 152                           "Last-Modified",
 153                           "Link",
 154                           "Location",
 155                           "Range",
 156                           "Referer",
 157                           "Retry-After",
 158                           "Transfer-Encoding",
 159                           "Upgrade",
 160                           "User-Agent",
 161                           "WWW-Authenticate"
 162                         };
 163 static const char * const days[7] =
 164                         {
 165                           "Sun",
 166                           "Mon",
 167                           "Tue",
 168                           "Wed",
 169                           "Thu",
 170                           "Fri",
 171                           "Sat"
 172                         };
 173 static const char * const months[12] =
 174                         {
 175                           "Jan",
 176                           "Feb",
 177                           "Mar",
 178                           "Apr",
 179                           "May",
 180                           "Jun",
 181                           "Jul",
 182                           "Aug",
 183                           "Sep",
 184                           "Oct",
 185                           "Nov",
 186                           "Dec"
 187                         };
 188
 189
 190 /*
 191  * 'httpInitialize()' - Initialize the HTTP interface library and set the
 192  *                      default HTTP proxy (if any).
 193  */
 194
 195 void
 196 httpInitialize(void)
 197 {
 198 #ifdef HAVE_LIBSSL
 199   struct timeval        curtime;        /* Current time in microseconds */
 200   int                   i;              /* Looping var */
 201   unsigned char         data[1024];     /* Seed data */
 202 #endif /* HAVE_LIBSSL */
 203
 204 #ifdef WIN32
 205   WSADATA       winsockdata;    /* WinSock data */
 206   static int    initialized = 0;/* Has WinSock been initialized? */
 207
 208
 209   if (!initialized)
 210     WSAStartup(MAKEWORD(1,1), &winsockdata);
 211 #elif defined(HAVE_SIGSET)
 212   sigset(SIGPIPE, SIG_IGN);
 213 #elif defined(HAVE_SIGACTION)
 214   struct sigaction      action; /* POSIX sigaction data */
 215
 216
 217  /*
 218   * Ignore SIGPIPE signals...
 219   */
 220
 221   memset(&action, 0, sizeof(action));
 222   action.sa_handler = SIG_IGN;
 223   sigaction(SIGPIPE, &action, NULL);
 224 #else
 225   signal(SIGPIPE, SIG_IGN);
 226 #endif /* WIN32 */
 227
 228 #ifdef HAVE_GNUTLS
 229   gnutls_global_init();
 230 #endif /* HAVE_GNUTLS */
 231
 232 #ifdef HAVE_LIBSSL
 233   SSL_load_error_strings();
 234   SSL_library_init();
 235
 236  /*
 237   * Using the current time is a dubious random seed, but on some systems
 238   * it is the best we can do (on others, this seed isn't even used...)
 239   */
 240
 241   gettimeofday(&curtime, NULL);
 242   srand(curtime.tv_sec + curtime.tv_usec);
 243
 244   for (i = 0; i < sizeof(data); i ++)
 245     data[i] = rand(); /* Yes, this is a poor source of random data... */
 246
 247   RAND_seed(&data, sizeof(data));
 248 #endif /* HAVE_LIBSSL */
 249 }
 250
 251
 252 /*
 253  * 'httpCheck()' - Check to see if there is a pending response from the server.
 254  */
 255
 256 int                             /* O - 0 = no data, 1 = data available */
 257 httpCheck(http_t *http)         /* I - HTTP connection */
 258 {
 259   return (httpWait(http, 0));
 260 }
 261
 262
 263 /*
 264  * 'httpClearCookie()' - Clear the cookie value(s).
 265  */
 266
 267 void
 268 httpClearCookie(http_t *http)                   /* I - Connection */
 269 {
 270   if (!http)
 271     return;
 272
 273   if (http->cookie)
 274   {
 275     free(http->cookie);
 276     http->cookie = NULL;
 277   }
 278 }
 279
 280
 281 /*
 282  * 'httpClose()' - Close an HTTP connection...
 283  */
 284
 285 void
 286 httpClose(http_t *http)         /* I - Connection to close */
 287 {
 288   if (!http)
 289     return;
 290
 291   if (http->input_set)
 292     free(http->input_set);
 293
 294   if (http->cookie)
 295     free(http->cookie);
 296
 297 #ifdef HAVE_SSL
 298   if (http->tls)
 299     http_shutdown_ssl(http);
 300 #endif /* HAVE_SSL */
 301
 302 #ifdef WIN32
 303   closesocket(http->fd);
 304 #else
 305   close(http->fd);
 306 #endif /* WIN32 */
 307
 308   free(http);
 309 }
 310
 311
 312 /*
 313  * 'httpConnect()' - Connect to a HTTP server.
 314  */
 315
 316 http_t *                        /* O - New HTTP connection */
 317 httpConnect(const char *host,   /* I - Host to connect to */
 318             int        port)    /* I - Port number */
 319 {
 320   http_encryption_t     encrypt;/* Type of encryption to use */
 321
 322
 323  /*
 324   * Set the default encryption status...
 325   */
 326
 327   if (port == 443)
 328     encrypt = HTTP_ENCRYPT_ALWAYS;
 329   else
 330     encrypt = HTTP_ENCRYPT_IF_REQUESTED;
 331
 332   return (httpConnectEncrypt(host, port, encrypt));
 333 }
 334
 335
 336 /*
 337  * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
 338  */
 339
 340 http_t *                                /* O - New HTTP connection */
 341 httpConnectEncrypt(const char *host,    /* I - Host to connect to */
 342                    int        port,     /* I - Port number */
 343                    http_encryption_t encrypt)
 344                                         /* I - Type of encryption to use */
 345 {
 346   int                   i;              /* Looping var */
 347   http_t                *http;          /* New HTTP connection */
 348   struct hostent        *hostaddr;      /* Host address data */
 349
 350
 351   if (host == NULL)
 352     return (NULL);
 353
 354   httpInitialize();
 355
 356  /*
 357   * Lookup the host...
 358   */
 359
 360   if ((hostaddr = httpGetHostByName(host)) == NULL)
 361   {
 362    /*
 363     * This hack to make users that don't have a localhost entry in
 364     * their hosts file or DNS happy...
 365     */
 366
 367     if (strcasecmp(host, "localhost") != 0)
 368       return (NULL);
 369     else if ((hostaddr = httpGetHostByName("127.0.0.1")) == NULL)
 370       return (NULL);
 371   }
 372
 373  /*
 374   * Verify that it is an IPv4 address (IPv6 support will come in CUPS 1.2...)
 375   */
 376
 377 #ifdef AF_INET6
 378   if ((hostaddr->h_addrtype != AF_INET || hostaddr->h_length != 4) &&
 379       (hostaddr->h_addrtype != AF_INET6 || hostaddr->h_length != 16))
 380     return (NULL);
 381 #else
 382   if (hostaddr->h_addrtype != AF_INET || hostaddr->h_length != 4)
 383     return (NULL);
 384 #endif /* AF_INET6 */
 385
 386  /*
 387   * Allocate memory for the structure...
 388   */
 389
 390   http = calloc(sizeof(http_t), 1);
 391   if (http == NULL)
 392     return (NULL);
 393
 394   http->version  = HTTP_1_1;
 395   http->blocking = 1;
 396   http->activity = time(NULL);
 397   http->fd       = -1;
 398
 399  /*
 400   * Set the encryption status...
 401   */
 402
 403   if (port == 443)      /* Always use encryption for https */
 404     http->encryption = HTTP_ENCRYPT_ALWAYS;
 405   else
 406     http->encryption = encrypt;
 407
 408  /*
 409   * Loop through the addresses we have until one of them connects...
 410   */
 411
 412   strlcpy(http->hostname, host, sizeof(http->hostname));
 413
 414   for (i = 0; hostaddr->h_addr_list[i]; i ++)
 415   {
 416    /*
 417     * Load the address...
 418     */
 419
 420     httpAddrLoad(hostaddr, port, i, &(http->hostaddr));
 421
 422    /*
 423     * Connect to the remote system...
 424     */
 425
 426     if (!httpReconnect(http))
 427       break;
 428   }
 429
 430  /*
 431   * Return the new structure if we could connect; otherwise, bail out...
 432   */
 433
 434   if (hostaddr->h_addr_list[i])
 435     return (http);
 436   else
 437   {
 438     free(http);
 439     return (NULL);
 440   }
 441 }
 442
 443
 444 /*
 445  * 'httpEncryption()' - Set the required encryption on the link.
 446  */
 447
 448 int                                     /* O - -1 on error, 0 on success */
 449 httpEncryption(http_t            *http, /* I - HTTP data */
 450                http_encryption_t e)     /* I - New encryption preference */
 451 {
 452 #ifdef HAVE_SSL
 453   if (!http)
 454     return (0);
 455
 456   http->encryption = e;
 457
 458   if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) ||
 459       (http->encryption == HTTP_ENCRYPT_NEVER && http->tls))
 460     return (httpReconnect(http));
 461   else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
 462     return (http_upgrade(http));
 463   else
 464     return (0);
 465 #else
 466   if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED)
 467     return (-1);
 468   else
 469     return (0);
 470 #endif /* HAVE_SSL */
 471 }
 472
 473
 474 /*
 475  * 'httpReconnect()' - Reconnect to a HTTP server...
 476  */
 477
 478 int                             /* O - 0 on success, non-zero on failure */
 479 httpReconnect(http_t *http)     /* I - HTTP data */
 480 {
 481   int           val;            /* Socket option value */
 482
 483 #ifdef HAVE_SSL
 484   if (http->tls)
 485     http_shutdown_ssl(http);
 486 #endif /* HAVE_SSL */
 487
 488  /*
 489   * Close any previously open socket...
 490   */
 491
 492   if (http->fd >= 0)
 493 #ifdef WIN32
 494     closesocket(http->fd);
 495 #else
 496     close(http->fd);
 497 #endif /* WIN32 */
 498
 499  /*
 500   * Create the socket and set options to allow reuse.
 501   */
 502
 503   if ((http->fd = socket(http->hostaddr.addr.sa_family, SOCK_STREAM, 0)) < 0)
 504   {
 505 #ifdef WIN32
 506     http->error  = WSAGetLastError();
 507 #else
 508     http->error  = errno;
 509 #endif /* WIN32 */
 510     http->status = HTTP_ERROR;
 511     return (-1);
 512   }
 513
 514 #ifdef FD_CLOEXEC
 515   fcntl(http->fd, F_SETFD, FD_CLOEXEC); /* Close this socket when starting *
 516                                          * other processes...              */
 517 #endif /* FD_CLOEXEC */
 518
 519   val = 1;
 520   setsockopt(http->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
 521
 522 #ifdef SO_REUSEPORT
 523   val = 1;
 524   setsockopt(http->fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val));
 525 #endif /* SO_REUSEPORT */
 526
 527  /*
 528   * Using TCP_NODELAY improves responsiveness, especially on systems
 529   * with a slow loopback interface...  Since we write large buffers
 530   * when sending print files and requests, there shouldn't be any
 531   * performance penalty for this...
 532   */
 533
 534   val = 1;
 535   setsockopt(http->fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
 536
 537  /*
 538   * Connect to the server...
 539   */
 540
 541 #ifdef AF_INET6
 542   if (connect(http->fd, (struct sockaddr *)&(http->hostaddr),
 543               http->hostaddr.addr.sa_family == AF_INET ?
 544                   sizeof(http->hostaddr.ipv4) :
 545                   sizeof(http->hostaddr.ipv6)) < 0)
 546 #else
 547   if (connect(http->fd, (struct sockaddr *)&(http->hostaddr),
 548               sizeof(http->hostaddr.ipv4)) < 0)
 549 #endif /* AF_INET6 */
 550   {
 551 #ifdef WIN32
 552     http->error  = WSAGetLastError();
 553 #else
 554     http->error  = errno;
 555 #endif /* WIN32 */
 556     http->status = HTTP_ERROR;
 557
 558 #ifdef WIN32
 559     closesocket(http->fd);
 560 #else
 561     close(http->fd);
 562 #endif
 563
 564     http->fd = -1;
 565
 566     return (-1);
 567   }
 568
 569   http->error  = 0;
 570   http->status = HTTP_CONTINUE;
 571
 572 #ifdef HAVE_SSL
 573   if (http->encryption == HTTP_ENCRYPT_ALWAYS)
 574   {
 575    /*
 576     * Always do encryption via SSL.
 577     */
 578
 579     if (http_setup_ssl(http) != 0)
 580     {
 581 #ifdef WIN32
 582       closesocket(http->fd);
 583 #else
 584       close(http->fd);
 585 #endif /* WIN32 */
 586
 587       return (-1);
 588     }
 589   }
 590   else if (http->encryption == HTTP_ENCRYPT_REQUIRED)
 591     return (http_upgrade(http));
 592 #endif /* HAVE_SSL */
 593
 594   return (0);
 595 }
 596
 597
 598 /*
 599  * 'httpGetSubField()' - Get a sub-field value.
 600  */
 601
 602 char *                                  /* O - Value or NULL */
 603 httpGetSubField(http_t       *http,     /* I - HTTP data */
 604                 http_field_t field,     /* I - Field index */
 605                 const char   *name,     /* I - Name of sub-field */
 606                 char         *value)    /* O - Value string */
 607 {
 608   const char    *fptr;                  /* Pointer into field */
 609   char          temp[HTTP_MAX_VALUE],   /* Temporary buffer for name */
 610                 *ptr;                   /* Pointer into string buffer */
 611
 612
 613   if (http == NULL ||
 614       field < HTTP_FIELD_ACCEPT_LANGUAGE ||
 615       field > HTTP_FIELD_WWW_AUTHENTICATE ||
 616       name == NULL || value == NULL)
 617     return (NULL);
 618
 619   for (fptr = http->fields[field]; *fptr;)
 620   {
 621    /*
 622     * Skip leading whitespace...
 623     */
 624
 625     while (isspace(*fptr))
 626       fptr ++;
 627
 628     if (*fptr == ',')
 629     {
 630       fptr ++;
 631       continue;
 632     }
 633
 634    /*
 635     * Get the sub-field name...
 636     */
 637
 638     for (ptr = temp;
 639          *fptr && *fptr != '=' && !isspace(*fptr) && ptr < (temp + sizeof(temp) - 1);
 640          *ptr++ = *fptr++);
 641
 642     *ptr = '\0';
 643
 644    /*
 645     * Skip trailing chars up to the '='...
 646     */
 647
 648     while (*fptr && *fptr != '=')
 649       fptr ++;
 650
 651     if (!*fptr)
 652       break;
 653
 654    /*
 655     * Skip = and leading whitespace...
 656     */
 657
 658     fptr ++;
 659
 660     while (isspace(*fptr))
 661       fptr ++;
 662
 663     if (*fptr == '\"')
 664     {
 665      /*
 666       * Read quoted string...
 667       */
 668
 669       for (ptr = value, fptr ++;
 670            *fptr && *fptr != '\"' && ptr < (value + HTTP_MAX_VALUE - 1);
 671            *ptr++ = *fptr++);
 672
 673       *ptr = '\0';
 674
 675       while (*fptr && *fptr != '\"')
 676         fptr ++;
 677
 678       if (*fptr)
 679         fptr ++;
 680     }
 681     else
 682     {
 683      /*
 684       * Read unquoted string...
 685       */
 686
 687       for (ptr = value;
 688            *fptr && !isspace(*fptr) && *fptr != ',' && ptr < (value + HTTP_MAX_VALUE - 1);
 689            *ptr++ = *fptr++);
 690
 691       *ptr = '\0';
 692
 693       while (*fptr && !isspace(*fptr) && *fptr != ',')
 694         fptr ++;
 695     }
 696
 697    /*
 698     * See if this is the one...
 699     */
 700
 701     if (strcmp(name, temp) == 0)
 702       return (value);
 703   }
 704
 705   value[0] = '\0';
 706
 707   return (NULL);
 708 }
 709
 710
 711 /*
 712  * 'httpSetField()' - Set the value of an HTTP header.
 713  */
 714
 715 void
 716 httpSetField(http_t       *http,        /* I - HTTP data */
 717              http_field_t field,        /* I - Field index */
 718              const char   *value)       /* I - Value */
 719 {
 720   if (http == NULL ||
 721       field < HTTP_FIELD_ACCEPT_LANGUAGE ||
 722       field > HTTP_FIELD_WWW_AUTHENTICATE ||
 723       value == NULL)
 724     return;
 725
 726   strlcpy(http->fields[field], value, HTTP_MAX_VALUE);
 727 }
 728
 729
 730 /*
 731  * 'httpDelete()' - Send a DELETE request to the server.
 732  */
 733
 734 int                                     /* O - Status of call (0 = success) */
 735 httpDelete(http_t     *http,            /* I - HTTP data */
 736            const char *uri)             /* I - URI to delete */
 737 {
 738   return (http_send(http, HTTP_DELETE, uri));
 739 }
 740
 741
 742 /*
 743  * 'httpGet()' - Send a GET request to the server.
 744  */
 745
 746 int                                     /* O - Status of call (0 = success) */
 747 httpGet(http_t     *http,               /* I - HTTP data */
 748         const char *uri)                /* I - URI to get */
 749 {
 750   return (http_send(http, HTTP_GET, uri));
 751 }
 752
 753
 754 /*
 755  * 'httpHead()' - Send a HEAD request to the server.
 756  */
 757
 758 int                                     /* O - Status of call (0 = success) */
 759 httpHead(http_t     *http,              /* I - HTTP data */
 760          const char *uri)               /* I - URI for head */
 761 {
 762   return (http_send(http, HTTP_HEAD, uri));
 763 }
 764
 765
 766 /*
 767  * 'httpOptions()' - Send an OPTIONS request to the server.
 768  */
 769
 770 int                                     /* O - Status of call (0 = success) */
 771 httpOptions(http_t     *http,           /* I - HTTP data */
 772             const char *uri)            /* I - URI for options */
 773 {
 774   return (http_send(http, HTTP_OPTIONS, uri));
 775 }
 776
 777
 778 /*
 779  * 'httpPost()' - Send a POST request to the server.
 780  */
 781
 782 int                                     /* O - Status of call (0 = success) */
 783 httpPost(http_t     *http,              /* I - HTTP data */
 784          const char *uri)               /* I - URI for post */
 785 {
 786   httpGetLength(http);
 787
 788   return (http_send(http, HTTP_POST, uri));
 789 }
 790
 791
 792 /*
 793  * 'httpPut()' - Send a PUT request to the server.
 794  */
 795
 796 int                                     /* O - Status of call (0 = success) */
 797 httpPut(http_t     *http,               /* I - HTTP data */
 798         const char *uri)                /* I - URI to put */
 799 {
 800   httpGetLength(http);
 801
 802   return (http_send(http, HTTP_PUT, uri));
 803 }
 804
 805
 806 /*
 807  * 'httpTrace()' - Send an TRACE request to the server.
 808  */
 809
 810 int                                     /* O - Status of call (0 = success) */
 811 httpTrace(http_t     *http,             /* I - HTTP data */
 812           const char *uri)              /* I - URI for trace */
 813 {
 814   return (http_send(http, HTTP_TRACE, uri));
 815 }
 816
 817
 818 /*
 819  * 'httpFlush()' - Flush data from a HTTP connection.
 820  */
 821
 822 void
 823 httpFlush(http_t *http) /* I - HTTP data */
 824 {
 825   char  buffer[8192];   /* Junk buffer */
 826
 827
 828   if (http->state != HTTP_WAITING)
 829   {
 830     while (httpRead(http, buffer, sizeof(buffer)) > 0);
 831   }
 832 }
 833
 834
 835 /*
 836  * 'httpRead()' - Read data from a HTTP connection.
 837  */
 838
 839 int                                     /* O - Number of bytes read */
 840 httpRead(http_t *http,                  /* I - HTTP data */
 841          char   *buffer,                /* I - Buffer for data */
 842          int    length)                 /* I - Maximum number of bytes */
 843 {
 844   int           bytes;                  /* Bytes read */
 845   char          len[32];                /* Length string */
 846
 847
 848   DEBUG_printf(("httpRead(%p, %p, %d)\n", http, buffer, length));
 849
 850   if (http == NULL || buffer == NULL)
 851     return (-1);
 852
 853   http->activity = time(NULL);
 854
 855   if (length <= 0)
 856     return (0);
 857
 858   if (http->data_encoding == HTTP_ENCODE_CHUNKED &&
 859       http->data_remaining <= 0)
 860   {
 861     DEBUG_puts("httpRead: Getting chunk length...");
 862
 863     if (httpGets(len, sizeof(len), http) == NULL)
 864     {
 865       DEBUG_puts("httpRead: Could not get length!");
 866       return (0);
 867     }
 868
 869     http->data_remaining = strtol(len, NULL, 16);
 870     if (http->data_remaining < 0)
 871     {
 872       DEBUG_puts("httpRead: Negative chunk length!");
 873       return (0);
 874     }
 875   }
 876
 877   DEBUG_printf(("httpRead: data_remaining = %d\n", http->data_remaining));
 878
 879   if (http->data_remaining <= 0)
 880   {
 881    /*
 882     * A zero-length chunk ends a transfer; unless we are reading POST
 883     * data, go idle...
 884     */
 885
 886     if (http->data_encoding == HTTP_ENCODE_CHUNKED)
 887       httpGets(len, sizeof(len), http);
 888
 889     if (http->state == HTTP_POST_RECV)
 890       http->state ++;
 891     else
 892       http->state = HTTP_WAITING;
 893
 894     return (0);
 895   }
 896   else if (length > http->data_remaining)
 897     length = http->data_remaining;
 898
 899   if (http->used == 0 && length <= 256)
 900   {
 901    /*
 902     * Buffer small reads for better performance...
 903     */
 904
 905     if (!http->blocking && !httpWait(http, 1000))
 906       return (0);
 907
 908     if (http->data_remaining > sizeof(http->buffer))
 909       bytes = sizeof(http->buffer);
 910     else
 911       bytes = http->data_remaining;
 912
 913 #ifdef HAVE_SSL
 914     if (http->tls)
 915       bytes = http_read_ssl(http, http->buffer, bytes);
 916     else
 917 #endif /* HAVE_SSL */
 918     {
 919       DEBUG_printf(("httpRead: reading %d bytes from socket into buffer...\n",
 920                     bytes));
 921
 922       bytes = recv(http->fd, http->buffer, bytes, 0);
 923
 924       DEBUG_printf(("httpRead: read %d bytes from socket into buffer...\n",
 925                     bytes));
 926     }
 927
 928     if (bytes > 0)
 929       http->used = bytes;
 930     else if (bytes < 0)
 931     {
 932 #ifdef WIN32
 933       http->error = WSAGetLastError();
 934       return (-1);
 935 #else
 936       if (errno != EINTR)
 937       {
 938         http->error = errno;
 939         return (-1);
 940       }
 941 #endif /* WIN32 */
 942     }
 943     else
 944     {
 945       http->error = EPIPE;
 946       return (0);
 947     }
 948   }
 949
 950   if (http->used > 0)
 951   {
 952     if (length > http->used)
 953       length = http->used;
 954
 955     bytes = length;
 956
 957     DEBUG_printf(("httpRead: grabbing %d bytes from input buffer...\n", bytes));
 958
 959     memcpy(buffer, http->buffer, length);
 960     http->used -= length;
 961
 962     if (http->used > 0)
 963       memmove(http->buffer, http->buffer + length, http->used);
 964   }
 965 #ifdef HAVE_SSL
 966   else if (http->tls)
 967   {
 968     if (!http->blocking && !httpWait(http, 1000))
 969       return (0);
 970
 971     bytes = http_read_ssl(http, buffer, length);
 972   }
 973 #endif /* HAVE_SSL */
 974   else
 975   {
 976     if (!http->blocking && !httpWait(http, 1000))
 977       return (0);
 978
 979     DEBUG_printf(("httpRead: reading %d bytes from socket...\n", length));
 980     bytes = recv(http->fd, buffer, length, 0);
 981     DEBUG_printf(("httpRead: read %d bytes from socket...\n", bytes));
 982   }
 983
 984   if (bytes > 0)
 985     http->data_remaining -= bytes;
 986   else if (bytes < 0)
 987   {
 988 #ifdef WIN32
 989     http->error = WSAGetLastError();
 990 #else
 991     if (errno == EINTR)
 992       bytes = 0;
 993     else
 994       http->error = errno;
 995 #endif /* WIN32 */
 996   }
 997   else
 998   {
 999     http->error = EPIPE;
1000     return (0);
1001   }
1002
1003   if (http->data_remaining == 0)
1004   {
1005     if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1006       httpGets(len, sizeof(len), http);
1007
1008     if (http->data_encoding != HTTP_ENCODE_CHUNKED)
1009     {
1010       if (http->state == HTTP_POST_RECV)
1011         http->state ++;
1012       else
1013         http->state = HTTP_WAITING;
1014     }
1015   }
1016
1017 #ifdef DEBUG
1018   {
1019     int i, j, ch;
1020     printf("httpRead: Read %d bytes:\n", bytes);
1021     for (i = 0; i < bytes; i += 16)
1022     {
1023       printf("   ");
1024
1025       for (j = 0; j < 16 && (i + j) < bytes; j ++)
1026         printf(" %02X", buffer[i + j] & 255);
1027
1028       while (j < 16)
1029       {
1030         printf("   ");
1031         j ++;
1032       }
1033
1034       printf("    ");
1035       for (j = 0; j < 16 && (i + j) < bytes; j ++)
1036       {
1037         ch = buffer[i + j] & 255;
1038
1039         if (ch < ' ' || ch == 127)
1040           ch = '.';
1041
1042         putchar(ch);
1043       }
1044       putchar('\n');
1045     }
1046   }
1047 #endif /* DEBUG */
1048
1049   return (bytes);
1050 }
1051
1052
1053 /*
1054  * 'httpSetCookie()' - Set the cookie value(s)...
1055  */
1056
1057 void
1058 httpSetCookie(http_t     *http,         /* I - Connection */
1059               const char *cookie)       /* I - Cookie string */
1060 {
1061   if (!http)
1062     return;
1063
1064   if (http->cookie)
1065     free(http->cookie);
1066
1067   if (cookie)
1068     http->cookie = strdup(cookie);
1069   else
1070     http->cookie = NULL;
1071 }
1072
1073
1074 /*
1075  * 'httpWait()' - Wait for data available on a connection.
1076  */
1077
1078 int                                     /* O - 1 if data is available, 0 otherwise */
1079 httpWait(http_t *http,                  /* I - HTTP data */
1080          int    msec)                   /* I - Milliseconds to wait */
1081 {
1082  /*
1083   * First see if there is data in the buffer...
1084   */
1085
1086   if (http == NULL)
1087     return (0);
1088
1089   if (http->used)
1090     return (1);
1091
1092  /*
1093   * If not, check the SSL/TLS buffers and do a select() on the connection...
1094   */
1095
1096   return (http_wait(http, msec));
1097 }
1098
1099
1100 /*
1101  * 'httpWrite()' - Write data to a HTTP connection.
1102  */
1103
1104 int                                     /* O - Number of bytes written */
1105 httpWrite(http_t     *http,             /* I - HTTP data */
1106           const char *buffer,           /* I - Buffer for data */
1107           int        length)            /* I - Number of bytes to write */
1108 {
1109   int   tbytes,                         /* Total bytes sent */
1110         bytes;                          /* Bytes sent */
1111
1112
1113   if (http == NULL || buffer == NULL)
1114     return (-1);
1115
1116   http->activity = time(NULL);
1117
1118   if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1119   {
1120     if (httpPrintf(http, "%x\r\n", length) < 0)
1121       return (-1);
1122
1123     if (length == 0)
1124     {
1125      /*
1126       * A zero-length chunk ends a transfer; unless we are sending POST
1127       * data, go idle...
1128       */
1129
1130       DEBUG_puts("httpWrite: changing states...");
1131
1132       if (http->state == HTTP_POST_RECV)
1133         http->state ++;
1134       else if (http->state == HTTP_PUT_RECV)
1135         http->state = HTTP_STATUS;
1136       else
1137         http->state = HTTP_WAITING;
1138
1139       if (httpPrintf(http, "\r\n") < 0)
1140         return (-1);
1141
1142       return (0);
1143     }
1144   }
1145
1146   tbytes = 0;
1147
1148   while (length > 0)
1149   {
1150 #ifdef HAVE_SSL
1151     if (http->tls)
1152       bytes = http_write_ssl(http, buffer, length);
1153     else
1154 #endif /* HAVE_SSL */
1155     bytes = send(http->fd, buffer, length, 0);
1156
1157     if (bytes < 0)
1158     {
1159 #ifdef WIN32
1160       if (WSAGetLastError() != http->error)
1161       {
1162         http->error = WSAGetLastError();
1163         continue;
1164       }
1165 #else
1166       if (errno == EINTR)
1167         continue;
1168       else if (errno != http->error)
1169       {
1170         http->error = errno;
1171         continue;
1172       }
1173 #endif /* WIN32 */
1174
1175       DEBUG_puts("httpWrite: error writing data...\n");
1176
1177       return (-1);
1178     }
1179
1180     buffer += bytes;
1181     tbytes += bytes;
1182     length -= bytes;
1183     if (http->data_encoding == HTTP_ENCODE_LENGTH)
1184       http->data_remaining -= bytes;
1185   }
1186
1187   if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1188     if (httpPrintf(http, "\r\n") < 0)
1189       return (-1);
1190
1191   if (http->data_remaining == 0 && http->data_encoding == HTTP_ENCODE_LENGTH)
1192   {
1193    /*
1194     * Finished with the transfer; unless we are sending POST data, go idle...
1195     */
1196
1197     DEBUG_puts("httpWrite: changing states...");
1198
1199     if (http->state == HTTP_POST_RECV)
1200       http->state ++;
1201     else
1202       http->state = HTTP_WAITING;
1203   }
1204
1205 #ifdef DEBUG
1206   {
1207     int i, j, ch;
1208     printf("httpWrite: wrote %d bytes: \n", tbytes);
1209     for (i = 0, buffer -= tbytes; i < tbytes; i += 16)
1210     {
1211       printf("   ");
1212
1213       for (j = 0; j < 16 && (i + j) < tbytes; j ++)
1214         printf(" %02X", buffer[i + j] & 255);
1215
1216       while (j < 16)
1217       {
1218         printf("   ");
1219         j ++;
1220       }
1221
1222       printf("    ");
1223       for (j = 0; j < 16 && (i + j) < tbytes; j ++)
1224       {
1225         ch = buffer[i + j] & 255;
1226
1227         if (ch < ' ' || ch == 127)
1228           ch = '.';
1229
1230         putchar(ch);
1231       }
1232       putchar('\n');
1233     }
1234   }
1235 #endif /* DEBUG */
1236   return (tbytes);
1237 }
1238
1239
1240 /*
1241  * 'httpGets()' - Get a line of text from a HTTP connection.
1242  */
1243
1244 char *                                  /* O - Line or NULL */
1245 httpGets(char   *line,                  /* I - Line to read into */
1246          int    length,                 /* I - Max length of buffer */
1247          http_t *http)                  /* I - HTTP data */
1248 {
1249   char  *lineptr,                       /* Pointer into line */
1250         *bufptr,                        /* Pointer into input buffer */
1251         *bufend;                        /* Pointer to end of buffer */
1252   int   bytes;                          /* Number of bytes read */
1253
1254
1255   DEBUG_printf(("httpGets(%p, %d, %p)\n", line, length, http));
1256
1257   if (http == NULL || line == NULL)
1258     return (NULL);
1259
1260  /*
1261   * Pre-scan the buffer and see if there is a newline in there...
1262   */
1263
1264 #ifdef WIN32
1265   WSASetLastError(0);
1266 #else
1267   errno = 0;
1268 #endif /* WIN32 */
1269
1270   do
1271   {
1272     bufptr  = http->buffer;
1273     bufend  = http->buffer + http->used;
1274
1275     while (bufptr < bufend)
1276       if (*bufptr == 0x0a)
1277         break;
1278       else
1279         bufptr ++;
1280
1281     if (bufptr >= bufend && http->used < HTTP_MAX_BUFFER)
1282     {
1283      /*
1284       * No newline; see if there is more data to be read...
1285       */
1286
1287       if (!http->blocking && !http_wait(http, 1000))
1288         return (NULL);
1289
1290 #ifdef HAVE_SSL
1291       if (http->tls)
1292         bytes = http_read_ssl(http, bufend, HTTP_MAX_BUFFER - http->used);
1293       else
1294 #endif /* HAVE_SSL */
1295         bytes = recv(http->fd, bufend, HTTP_MAX_BUFFER - http->used, 0);
1296
1297       if (bytes < 0)
1298       {
1299        /*
1300         * Nope, can't get a line this time...
1301         */
1302
1303 #ifdef WIN32
1304         if (WSAGetLastError() != http->error)
1305         {
1306           http->error = WSAGetLastError();
1307           continue;
1308         }
1309
1310         DEBUG_printf(("httpGets(): recv() error %d!\n", WSAGetLastError()));
1311 #else
1312         if (errno == EINTR)
1313           continue;
1314         else if (errno != http->error)
1315         {
1316           http->error = errno;
1317           continue;
1318         }
1319
1320         DEBUG_printf(("httpGets(): recv() error %d!\n", errno));
1321 #endif /* WIN32 */
1322
1323         return (NULL);
1324       }
1325       else if (bytes == 0)
1326       {
1327         http->error = EPIPE;
1328
1329         return (NULL);
1330       }
1331
1332      /*
1333       * Yup, update the amount used and the end pointer...
1334       */
1335
1336       http->used += bytes;
1337       bufend     += bytes;
1338       bufptr     = bufend;
1339     }
1340   }
1341   while (bufptr >= bufend && http->used < HTTP_MAX_BUFFER);
1342
1343   http->activity = time(NULL);
1344
1345  /*
1346   * Read a line from the buffer...
1347   */
1348
1349   lineptr = line;
1350   bufptr  = http->buffer;
1351   bytes   = 0;
1352   length --;
1353
1354   while (bufptr < bufend && bytes < length)
1355   {
1356     bytes ++;
1357
1358     if (*bufptr == 0x0a)
1359     {
1360       bufptr ++;
1361       break;
1362     }
1363     else if (*bufptr == 0x0d)
1364       bufptr ++;
1365     else
1366       *lineptr++ = *bufptr++;
1367   }
1368
1369   if (bytes > 0)
1370   {
1371     *lineptr = '\0';
1372
1373     http->used -= bytes;
1374     if (http->used > 0)
1375       memmove(http->buffer, bufptr, http->used);
1376
1377     DEBUG_printf(("httpGets(): Returning \"%s\"\n", line));
1378     return (line);
1379   }
1380
1381   DEBUG_puts("httpGets(): No new line available!");
1382
1383   return (NULL);
1384 }
1385
1386
1387 /*
1388  * 'httpPrintf()' - Print a formatted string to a HTTP connection.
1389  */
1390
1391 int                                     /* O - Number of bytes written */
1392 httpPrintf(http_t     *http,            /* I - HTTP data */
1393            const char *format,          /* I - printf-style format string */
1394            ...)                         /* I - Additional args as needed */
1395 {
1396   int           bytes,                  /* Number of bytes to write */
1397                 nbytes,                 /* Number of bytes written */
1398                 tbytes;                 /* Number of bytes all together */
1399   char          buf[HTTP_MAX_BUFFER],   /* Buffer for formatted string */
1400                 *bufptr;                /* Pointer into buffer */
1401   va_list       ap;                     /* Variable argument pointer */
1402
1403
1404   va_start(ap, format);
1405   bytes = vsnprintf(buf, sizeof(buf), format, ap);
1406   va_end(ap);
1407
1408   DEBUG_printf(("httpPrintf: %s", buf));
1409
1410   for (tbytes = 0, bufptr = buf; tbytes < bytes; tbytes += nbytes, bufptr += nbytes)
1411   {
1412 #ifdef HAVE_SSL
1413     if (http->tls)
1414       nbytes = http_write_ssl(http, bufptr, bytes - tbytes);
1415     else
1416 #endif /* HAVE_SSL */
1417     nbytes = send(http->fd, bufptr, bytes - tbytes, 0);
1418
1419     if (nbytes < 0)
1420     {
1421       nbytes = 0;
1422
1423 #ifdef WIN32
1424       if (WSAGetLastError() != http->error)
1425       {
1426         http->error = WSAGetLastError();
1427         continue;
1428       }
1429 #else
1430       if (errno == EINTR)
1431         continue;
1432       else if (errno != http->error)
1433       {
1434         http->error = errno;
1435         continue;
1436       }
1437 #endif /* WIN32 */
1438
1439       return (-1);
1440     }
1441   }
1442
1443   return (bytes);
1444 }
1445
1446
1447 /*
1448  * 'httpStatus()' - Return a short string describing a HTTP status code.
1449  */
1450
1451 const char *                            /* O - String or NULL */
1452 httpStatus(http_status_t status)        /* I - HTTP status code */
1453 {
1454   switch (status)
1455   {
1456     case HTTP_CONTINUE :
1457         return ("Continue");
1458     case HTTP_SWITCHING_PROTOCOLS :
1459         return ("Switching Protocols");
1460     case HTTP_OK :
1461         return ("OK");
1462     case HTTP_CREATED :
1463         return ("Created");
1464     case HTTP_ACCEPTED :
1465         return ("Accepted");
1466     case HTTP_NO_CONTENT :
1467         return ("No Content");
1468     case HTTP_NOT_MODIFIED :
1469         return ("Not Modified");
1470     case HTTP_BAD_REQUEST :
1471         return ("Bad Request");
1472     case HTTP_UNAUTHORIZED :
1473         return ("Unauthorized");
1474     case HTTP_FORBIDDEN :
1475         return ("Forbidden");
1476     case HTTP_NOT_FOUND :
1477         return ("Not Found");
1478     case HTTP_REQUEST_TOO_LARGE :
1479         return ("Request Entity Too Large");
1480     case HTTP_URI_TOO_LONG :
1481         return ("URI Too Long");
1482     case HTTP_UPGRADE_REQUIRED :
1483         return ("Upgrade Required");
1484     case HTTP_NOT_IMPLEMENTED :
1485         return ("Not Implemented");
1486     case HTTP_NOT_SUPPORTED :
1487         return ("Not Supported");
1488     default :
1489         return ("Unknown");
1490   }
1491 }
1492
1493
1494 /*
1495  * 'httpGetDateString()' - Get a formatted date/time string from a time value.
1496  */
1497
1498 const char *                            /* O - Date/time string */
1499 httpGetDateString(time_t t)             /* I - UNIX time */
1500 {
1501   struct tm     *tdate;
1502   static char   datetime[256];
1503
1504
1505   tdate = gmtime(&t);
1506   snprintf(datetime, sizeof(datetime), "%s, %02d %s %d %02d:%02d:%02d GMT",
1507            days[tdate->tm_wday], tdate->tm_mday, months[tdate->tm_mon],
1508            tdate->tm_year + 1900, tdate->tm_hour, tdate->tm_min, tdate->tm_sec);
1509
1510   return (datetime);
1511 }
1512
1513
1514 /*
1515  * 'httpGetDateTime()' - Get a time value from a formatted date/time string.
1516  */
1517
1518 time_t                                  /* O - UNIX time */
1519 httpGetDateTime(const char *s)          /* I - Date/time string */
1520 {
1521   int           i;                      /* Looping var */
1522   struct tm     tdate;                  /* Time/date structure */
1523   char          mon[16];                /* Abbreviated month name */
1524   int           day, year;              /* Day of month and year */
1525   int           hour, min, sec;         /* Time */
1526
1527
1528   if (sscanf(s, "%*s%d%15s%d%d:%d:%d", &day, mon, &year, &hour, &min, &sec) < 6)
1529     return (0);
1530
1531   for (i = 0; i < 12; i ++)
1532     if (strcasecmp(mon, months[i]) == 0)
1533       break;
1534
1535   if (i >= 12)
1536     return (0);
1537
1538   tdate.tm_mon   = i;
1539   tdate.tm_mday  = day;
1540   tdate.tm_year  = year - 1900;
1541   tdate.tm_hour  = hour;
1542   tdate.tm_min   = min;
1543   tdate.tm_sec   = sec;
1544   tdate.tm_isdst = 0;
1545
1546   return (mktime(&tdate));
1547 }
1548
1549
1550 /*
1551  * 'httpUpdate()' - Update the current HTTP state for incoming data.
1552  */
1553
1554 http_status_t                           /* O - HTTP status */
1555 httpUpdate(http_t *http)                /* I - HTTP data */
1556 {
1557   char          line[1024],             /* Line from connection... */
1558                 *value;                 /* Pointer to value on line */
1559   http_field_t  field;                  /* Field index */
1560   int           major, minor;           /* HTTP version numbers */
1561   http_status_t status;                 /* Authorization status */
1562
1563
1564   DEBUG_printf(("httpUpdate(%p)\n", http));
1565
1566  /*
1567   * If we haven't issued any commands, then there is nothing to "update"...
1568   */
1569
1570   if (http->state == HTTP_WAITING)
1571     return (HTTP_CONTINUE);
1572
1573  /*
1574   * Grab all of the lines we can from the connection...
1575   */
1576
1577   while (httpGets(line, sizeof(line), http) != NULL)
1578   {
1579     DEBUG_puts(line);
1580
1581     if (line[0] == '\0')
1582     {
1583      /*
1584       * Blank line means the start of the data section (if any).  Return
1585       * the result code, too...
1586       *
1587       * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
1588       * Instead, we just return HTTP_CONTINUE to the caller and keep on
1589       * tryin'...
1590       */
1591
1592       if (http->status == HTTP_CONTINUE)
1593         return (http->status);
1594
1595 #ifdef HAVE_SSL
1596       if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls)
1597       {
1598         if (http_setup_ssl(http) != 0)
1599         {
1600 #  ifdef WIN32
1601           closesocket(http->fd);
1602 #  else
1603           close(http->fd);
1604 #  endif /* WIN32 */
1605
1606           return (HTTP_ERROR);
1607         }
1608
1609         return (HTTP_CONTINUE);
1610       }
1611       else if (http->status == HTTP_UPGRADE_REQUIRED &&
1612                http->encryption != HTTP_ENCRYPT_NEVER)
1613         http->encryption = HTTP_ENCRYPT_REQUIRED;
1614 #endif /* HAVE_SSL */
1615
1616       httpGetLength(http);
1617
1618       switch (http->state)
1619       {
1620         case HTTP_GET :
1621         case HTTP_POST :
1622         case HTTP_POST_RECV :
1623         case HTTP_PUT :
1624             http->state ++;
1625         case HTTP_POST_SEND :
1626             break;
1627
1628         default :
1629             http->state = HTTP_WAITING;
1630             break;
1631       }
1632
1633       return (http->status);
1634     }
1635     else if (strncmp(line, "HTTP/", 5) == 0)
1636     {
1637      /*
1638       * Got the beginning of a response...
1639       */
1640
1641       if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, (int *)&status) != 3)
1642         return (HTTP_ERROR);
1643
1644       http->version = (http_version_t)(major * 100 + minor);
1645       http->status  = status;
1646     }
1647     else if ((value = strchr(line, ':')) != NULL)
1648     {
1649      /*
1650       * Got a value...
1651       */
1652
1653       *value++ = '\0';
1654       while (isspace(*value))
1655         value ++;
1656
1657      /*
1658       * Be tolerants of servers that send unknown attribute fields...
1659       */
1660
1661       if (!strcasecmp(line, "expect"))
1662       {
1663        /*
1664         * "Expect: 100-continue" or similar...
1665         */
1666
1667         http->expect = (http_status_t)atoi(value);
1668       }
1669       else if (!strcasecmp(line, "cookie"))
1670       {
1671        /*
1672         * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
1673         */
1674
1675         httpSetCookie(http, value);
1676       }
1677       else if ((field = http_field(line)) == HTTP_FIELD_UNKNOWN)
1678       {
1679         DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line));
1680         continue;
1681       }
1682       else
1683         httpSetField(http, field, value);
1684     }
1685     else
1686     {
1687       http->status = HTTP_ERROR;
1688       return (HTTP_ERROR);
1689     }
1690   }
1691
1692  /*
1693   * See if there was an error...
1694   */
1695
1696   if (http->error)
1697   {
1698     http->status = HTTP_ERROR;
1699     return (HTTP_ERROR);
1700   }
1701
1702  /*
1703   * If we haven't already returned, then there is nothing new...
1704   */
1705
1706   return (HTTP_CONTINUE);
1707 }
1708
1709
1710 /*
1711  * 'httpDecode64()' - Base64-decode a string.
1712  */
1713
1714 char *                          /* O - Decoded string */
1715 httpDecode64(char       *out,   /* I - String to write to */
1716              const char *in)    /* I - String to read from */
1717 {
1718   int   pos,                    /* Bit position */
1719         base64;                 /* Value of this character */
1720   char  *outptr;                /* Output pointer */
1721
1722
1723   for (outptr = out, pos = 0; *in != '\0'; in ++)
1724   {
1725    /*
1726     * Decode this character into a number from 0 to 63...
1727     */
1728
1729     if (*in >= 'A' && *in <= 'Z')
1730       base64 = *in - 'A';
1731     else if (*in >= 'a' && *in <= 'z')
1732       base64 = *in - 'a' + 26;
1733     else if (*in >= '0' && *in <= '9')
1734       base64 = *in - '0' + 52;
1735     else if (*in == '+')
1736       base64 = 62;
1737     else if (*in == '/')
1738       base64 = 63;
1739     else if (*in == '=')
1740       break;
1741     else
1742       continue;
1743
1744    /*
1745     * Store the result in the appropriate chars...
1746     */
1747
1748     switch (pos)
1749     {
1750       case 0 :
1751           *outptr = base64 << 2;
1752           pos ++;
1753           break;
1754       case 1 :
1755           *outptr++ |= (base64 >> 4) & 3;
1756           *outptr = (base64 << 4) & 255;
1757           pos ++;
1758           break;
1759       case 2 :
1760           *outptr++ |= (base64 >> 2) & 15;
1761           *outptr = (base64 << 6) & 255;
1762           pos ++;
1763           break;
1764       case 3 :
1765           *outptr++ |= base64;
1766           pos = 0;
1767           break;
1768     }
1769   }
1770
1771   *outptr = '\0';
1772
1773  /*
1774   * Return the decoded string...
1775   */
1776
1777   return (out);
1778 }
1779
1780
1781 /*
1782  * 'httpEncode64()' - Base64-encode a string.
1783  */
1784
1785 char *                          /* O - Encoded string */
1786 httpEncode64(char       *out,   /* I - String to write to */
1787              const char *in)    /* I - String to read from */
1788 {
1789   char          *outptr;        /* Output pointer */
1790   static const char base64[] =  /* Base64 characters... */
1791                 {
1792                   "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1793                   "abcdefghijklmnopqrstuvwxyz"
1794                   "0123456789"
1795                   "+/"
1796                 };
1797
1798
1799   for (outptr = out; *in != '\0'; in ++)
1800   {
1801    /*
1802     * Encode the up to 3 characters as 4 Base64 numbers...
1803     */
1804
1805     *outptr ++ = base64[in[0] >> 2];
1806     *outptr ++ = base64[((in[0] << 4) | (in[1] >> 4)) & 63];
1807
1808     in ++;
1809     if (*in == '\0')
1810     {
1811       *outptr ++ = '=';
1812       break;
1813     }
1814
1815     *outptr ++ = base64[((in[0] << 2) | (in[1] >> 6)) & 63];
1816
1817     in ++;
1818     if (*in == '\0')
1819       break;
1820
1821     *outptr ++ = base64[in[0] & 63];
1822   }
1823
1824   *outptr ++ = '=';
1825   *outptr = '\0';
1826
1827  /*
1828   * Return the encoded string...
1829   */
1830
1831   return (out);
1832 }
1833
1834
1835 /*
1836  * 'httpGetLength()' - Get the amount of data remaining from the
1837  *                     content-length or transfer-encoding fields.
1838  */
1839
1840 int                             /* O - Content length */
1841 httpGetLength(http_t *http)     /* I - HTTP data */
1842 {
1843   DEBUG_printf(("httpGetLength(%p), state = %d\n", http, http->state));
1844
1845   if (strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked") == 0)
1846   {
1847     DEBUG_puts("httpGetLength: chunked request!");
1848
1849     http->data_encoding  = HTTP_ENCODE_CHUNKED;
1850     http->data_remaining = 0;
1851   }
1852   else
1853   {
1854     http->data_encoding = HTTP_ENCODE_LENGTH;
1855
1856    /*
1857     * The following is a hack for HTTP servers that don't send a
1858     * content-length or transfer-encoding field...
1859     *
1860     * If there is no content-length then the connection must close
1861     * after the transfer is complete...
1862     */
1863
1864     if (http->fields[HTTP_FIELD_CONTENT_LENGTH][0] == '\0')
1865       http->data_remaining = 2147483647;
1866     else
1867       http->data_remaining = atoi(http->fields[HTTP_FIELD_CONTENT_LENGTH]);
1868
1869     DEBUG_printf(("httpGetLength: content_length = %d\n", http->data_remaining));
1870   }
1871
1872   return (http->data_remaining);
1873 }
1874
1875
1876 /*
1877  * 'http_field()' - Return the field index for a field name.
1878  */
1879
1880 static http_field_t             /* O - Field index */
1881 http_field(const char *name)    /* I - String name */
1882 {
1883   int   i;                      /* Looping var */
1884
1885
1886   for (i = 0; i < HTTP_FIELD_MAX; i ++)
1887     if (strcasecmp(name, http_fields[i]) == 0)
1888       return ((http_field_t)i);
1889
1890   return (HTTP_FIELD_UNKNOWN);
1891 }
1892
1893
1894 /*
1895  * 'http_send()' - Send a request with all fields and the trailing blank line.
1896  */
1897
1898 static int                      /* O - 0 on success, non-zero on error */
1899 http_send(http_t       *http,   /* I - HTTP data */
1900           http_state_t request, /* I - Request code */
1901           const char   *uri)    /* I - URI */
1902 {
1903   int           i;              /* Looping var */
1904   char          *ptr,           /* Pointer in buffer */
1905                 buf[1024];      /* Encoded URI buffer */
1906   static const char * const codes[] =
1907                 {               /* Request code strings */
1908                   NULL,
1909                   "OPTIONS",
1910                   "GET",
1911                   NULL,
1912                   "HEAD",
1913                   "POST",
1914                   NULL,
1915                   NULL,
1916                   "PUT",
1917                   NULL,
1918                   "DELETE",
1919                   "TRACE",
1920                   "CLOSE"
1921                 };
1922   static const char hex[] = "0123456789ABCDEF";
1923                                 /* Hex digits */
1924
1925
1926   if (http == NULL || uri == NULL)
1927     return (-1);
1928
1929  /*
1930   * Encode the URI as needed...
1931   */
1932
1933   for (ptr = buf; *uri != '\0' && ptr < (buf + sizeof(buf) - 1); uri ++)
1934     if (*uri <= ' ' || *uri >= 127)
1935     {
1936       if (ptr < (buf + sizeof(buf) - 1))
1937         *ptr ++ = '%';
1938       if (ptr < (buf + sizeof(buf) - 1))
1939         *ptr ++ = hex[(*uri >> 4) & 15];
1940       if (ptr < (buf + sizeof(buf) - 1))
1941         *ptr ++ = hex[*uri & 15];
1942     }
1943     else
1944       *ptr ++ = *uri;
1945
1946   *ptr = '\0';
1947
1948  /*
1949   * See if we had an error the last time around; if so, reconnect...
1950   */
1951
1952   if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST)
1953     httpReconnect(http);
1954
1955  /*
1956   * Send the request header...
1957   */
1958
1959   http->state = request;
1960   if (request == HTTP_POST || request == HTTP_PUT)
1961     http->state ++;
1962
1963   http->status = HTTP_CONTINUE;
1964
1965 #ifdef HAVE_SSL
1966   if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
1967   {
1968     httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade");
1969     httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0");
1970   }
1971 #endif /* HAVE_SSL */
1972
1973   if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1)
1974   {
1975     http->status = HTTP_ERROR;
1976     return (-1);
1977   }
1978
1979   for (i = 0; i < HTTP_FIELD_MAX; i ++)
1980     if (http->fields[i][0] != '\0')
1981     {
1982       DEBUG_printf(("%s: %s\n", http_fields[i], http->fields[i]));
1983
1984       if (httpPrintf(http, "%s: %s\r\n", http_fields[i], http->fields[i]) < 1)
1985       {
1986         http->status = HTTP_ERROR;
1987         return (-1);
1988       }
1989     }
1990
1991   if (httpPrintf(http, "\r\n") < 1)
1992   {
1993     http->status = HTTP_ERROR;
1994     return (-1);
1995   }
1996
1997   httpClearFields(http);
1998
1999   return (0);
2000 }
2001
2002
2003 /*
2004  * 'http_wait()' - Wait for data available on a connection.
2005  */
2006
2007 static int                              /* O - 1 if data is available, 0 otherwise */
2008 http_wait(http_t *http,                 /* I - HTTP data */
2009           int    msec)                  /* I - Milliseconds to wait */
2010 {
2011 #ifndef WIN32
2012   struct rlimit         limit;          /* Runtime limit */
2013 #endif /* !WIN32 */
2014   struct timeval        timeout;        /* Timeout */
2015   int                   nfds;           /* Result from select() */
2016
2017
2018  /*
2019   * Check the SSL/TLS buffers for data first...
2020   */
2021
2022 #ifdef HAVE_SSL
2023   if (http->tls)
2024   {
2025 #  ifdef HAVE_LIBSSL
2026     if (SSL_pending((SSL *)(http->tls)))
2027       return (1);
2028 #  elif defined(HAVE_GNUTLS)
2029     if (gnutls_record_check_pending(((http_tls_t *)(http->tls))->session))
2030       return (1);
2031 #  elif defined(HAVE_CDSASSL)
2032     size_t bytes;                       /* Bytes that are available */
2033
2034     if (!SSLGetBufferedReadSize((SSLContextRef)http->tls, &bytes) && bytes > 0)
2035       return;
2036 #  endif /* HAVE_LIBSSL */
2037   }
2038 #endif /* HAVE_SSL */
2039
2040  /*
2041   * Then try doing a select() to poll the socket...
2042   */
2043
2044   if (!http->input_set)
2045   {
2046 #ifdef WIN32
2047    /*
2048     * Windows has a fixed-size select() structure, different (surprise,
2049     * surprise!) from all UNIX implementations.  Just allocate this
2050     * fixed structure...
2051     */
2052
2053     http->input_set = calloc(1, sizeof(fd_set));
2054 #else
2055    /*
2056     * Allocate the select() input set based upon the max number of file
2057     * descriptors available for this process...
2058     */
2059
2060     getrlimit(RLIMIT_NOFILE, &limit);
2061
2062     http->input_set = calloc(1, (limit.rlim_cur + 31) / 32);
2063 #endif /* WIN32 */
2064
2065     if (!http->input_set)
2066       return (0);
2067   }
2068
2069   FD_SET(http->fd, http->input_set);
2070
2071   if (msec >= 0)
2072   {
2073     timeout.tv_sec  = msec / 1000;
2074     timeout.tv_usec = (msec % 1000) * 1000;
2075
2076     nfds = select(http->fd + 1, http->input_set, NULL, NULL, &timeout);
2077   }
2078   else
2079     nfds = select(http->fd + 1, http->input_set, NULL, NULL, NULL);
2080
2081   FD_CLR(http->fd, http->input_set);
2082
2083   return (nfds > 0);
2084 }
2085
2086
2087 #ifdef HAVE_SSL
2088 /*
2089  * 'http_upgrade()' - Force upgrade to TLS encryption.
2090  */
2091
2092 static int                      /* O - Status of connection */
2093 http_upgrade(http_t *http)      /* I - HTTP data */
2094 {
2095   int           ret;            /* Return value */
2096   http_t        myhttp;         /* Local copy of HTTP data */
2097
2098
2099   DEBUG_printf(("http_upgrade(%p)\n", http));
2100
2101  /*
2102   * Copy the HTTP data to a local variable so we can do the OPTIONS
2103   * request without interfering with the existing request data...
2104   */
2105
2106   memcpy(&myhttp, http, sizeof(myhttp));
2107
2108  /*
2109   * Send an OPTIONS request to the server, requiring SSL or TLS
2110   * encryption on the link...
2111   */
2112
2113   httpClearFields(&myhttp);
2114   httpSetField(&myhttp, HTTP_FIELD_CONNECTION, "upgrade");
2115   httpSetField(&myhttp, HTTP_FIELD_UPGRADE, "TLS/1.0, SSL/2.0, SSL/3.0");
2116
2117   if ((ret = httpOptions(&myhttp, "*")) == 0)
2118   {
2119    /*
2120     * Wait for the secure connection...
2121     */
2122
2123     while (httpUpdate(&myhttp) == HTTP_CONTINUE);
2124   }
2125
2126   httpFlush(&myhttp);
2127
2128  /*
2129   * Copy the HTTP data back over, if any...
2130   */
2131
2132   http->fd         = myhttp.fd;
2133   http->error      = myhttp.error;
2134   http->activity   = myhttp.activity;
2135   http->status     = myhttp.status;
2136   http->version    = myhttp.version;
2137   http->keep_alive = myhttp.keep_alive;
2138   http->used       = myhttp.used;
2139
2140   if (http->used)
2141     memcpy(http->buffer, myhttp.buffer, http->used);
2142
2143   http->auth_type   = myhttp.auth_type;
2144   http->nonce_count = myhttp.nonce_count;
2145
2146   memcpy(http->nonce, myhttp.nonce, sizeof(http->nonce));
2147
2148   http->tls        = myhttp.tls;
2149   http->encryption = myhttp.encryption;
2150
2151  /*
2152   * See if we actually went secure...
2153   */
2154
2155   if (!http->tls)
2156   {
2157    /*
2158     * Server does not support HTTP upgrade...
2159     */
2160
2161     DEBUG_puts("Server does not support HTTP upgrade!");
2162
2163 #  ifdef WIN32
2164     closesocket(http->fd);
2165 #  else
2166     close(http->fd);
2167 #  endif
2168
2169     http->fd = -1;
2170
2171     return (-1);
2172   }
2173   else
2174     return (ret);
2175 }
2176
2177
2178 /*
2179  * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
2180  */
2181
2182 static int                              /* O - Status of connection */
2183 http_setup_ssl(http_t *http)            /* I - HTTP data */
2184 {
2185 #  ifdef HAVE_LIBSSL
2186   SSL_CTX       *context;       /* Context for encryption */
2187   SSL           *conn;          /* Connection for encryption */
2188 #  elif defined(HAVE_GNUTLS)
2189   http_tls_t    *conn;          /* TLS session object */
2190   gnutls_certificate_client_credentials *credentials;
2191                                 /* TLS credentials */
2192 #  elif defined(HAVE_CDSASSL)
2193   SSLContextRef conn;           /* Context for encryption */
2194   OSStatus      error;          /* Error info */
2195 #  endif /* HAVE_LIBSSL */
2196
2197
2198 #  ifdef HAVE_LIBSSL
2199   context = SSL_CTX_new(SSLv23_client_method());
2200   conn    = SSL_new(context);
2201
2202   SSL_set_fd(conn, http->fd);
2203   if (SSL_connect(conn) != 1)
2204   {
2205     SSL_CTX_free(context);
2206     SSL_free(conn);
2207
2208 #    ifdef WIN32
2209     http->error  = WSAGetLastError();
2210 #    else
2211     http->error  = errno;
2212 #    endif /* WIN32 */
2213     http->status = HTTP_ERROR;
2214
2215     return (HTTP_ERROR);
2216   }
2217
2218 #  elif defined(HAVE_GNUTLS)
2219   conn = (http_tls_t *)malloc(sizeof(http_tls_t));
2220
2221   if (conn == NULL)
2222   {
2223     http->error  = errno;
2224     http->status = HTTP_ERROR;
2225
2226     return (-1);
2227   }
2228
2229   credentials = (gnutls_certificate_client_credentials *)
2230                     malloc(sizeof(gnutls_certificate_client_credentials));
2231   if (credentials == NULL)
2232   {
2233     free(conn);
2234
2235     http->error = errno;
2236     http->status = HTTP_ERROR;
2237
2238     return (-1);
2239   }
2240
2241   gnutls_certificate_allocate_credentials(credentials);
2242
2243   gnutls_init(&(conn->session), GNUTLS_CLIENT);
2244   gnutls_set_default_priority(conn->session);
2245   gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2246   gnutls_transport_set_ptr(conn->session, http->fd);
2247
2248   if ((gnutls_handshake(conn->session)) != GNUTLS_E_SUCCESS)
2249   {
2250     http->error  = errno;
2251     http->status = HTTP_ERROR;
2252
2253     return (-1);
2254   }
2255
2256   conn->credentials = credentials;
2257
2258 #  elif defined(HAVE_CDSASSL)
2259   error = SSLNewContext(false, &conn);
2260
2261   if (!error)
2262     error = SSLSetIOFuncs(conn, CDSAReadFunc, CDSAWriteFunc);
2263
2264   if (!error)
2265     error = SSLSetConnection(conn, (SSLConnectionRef)http->fd);
2266
2267   if (!error)
2268     error = SSLSetAllowsExpiredCerts(conn, true);
2269
2270   if (!error)
2271     error = SSLSetAllowsAnyRoot(conn, true);
2272
2273   if (!error)
2274     error = SSLHandshake(conn);
2275
2276   if (error != 0)
2277   {
2278     http->error  = error;
2279     http->status = HTTP_ERROR;
2280
2281     SSLDisposeContext(conn);
2282
2283     close(http->fd);
2284
2285     return (-1);
2286   }
2287 #  endif /* HAVE_CDSASSL */
2288
2289   http->tls = conn;
2290   return (0);
2291 }
2292
2293
2294 /*
2295  * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection.
2296  */
2297
2298 static void
2299 http_shutdown_ssl(http_t *http) /* I - HTTP data */
2300 {
2301 #  ifdef HAVE_LIBSSL
2302   SSL_CTX       *context;       /* Context for encryption */
2303   SSL           *conn;          /* Connection for encryption */
2304
2305
2306   conn    = (SSL *)(http->tls);
2307   context = SSL_get_SSL_CTX(conn);
2308
2309   SSL_shutdown(conn);
2310   SSL_CTX_free(context);
2311   SSL_free(conn);
2312
2313 #  elif defined(HAVE_GNUTLS)
2314   http_tls_t      *conn;        /* Encryption session */
2315   gnutls_certificate_client_credentials *credentials;
2316                                 /* TLS credentials */
2317
2318
2319   conn = (http_tls_t *)(http->tls);
2320   credentials = (gnutls_certificate_client_credentials *)(conn->credentials);
2321
2322   gnutls_bye(conn->session, GNUTLS_SHUT_RDWR);
2323   gnutls_deinit(conn->session);
2324   gnutls_certificate_free_credentials(*credentials);
2325   free(credentials);
2326   free(conn);
2327
2328 #  elif defined(HAVE_CDSASSL)
2329   SSLClose((SSLContextRef)http->tls);
2330   SSLDisposeContext((SSLContextRef)http->tls);
2331 #  endif /* HAVE_LIBSSL */
2332
2333   http->tls = NULL;
2334 }
2335
2336
2337 /*
2338  * 'http_read_ssl()' - Read from a SSL/TLS connection.
2339  */
2340
2341 static int                              /* O - Bytes read */
2342 http_read_ssl(http_t *http,             /* I - HTTP data */
2343               char   *buf,              /* I - Buffer to store data */
2344               int    len)               /* I - Length of buffer */
2345 {
2346 #  if defined(HAVE_LIBSSL)
2347   return (SSL_read((SSL *)(http->tls), buf, len));
2348
2349 #  elif defined(HAVE_GNUTLS)
2350   return (gnutls_record_recv(((http_tls_t *)(http->tls))->session, buf, len));
2351
2352 #  elif defined(HAVE_CDSASSL)
2353   OSStatus      error;                  /* Error info */
2354   size_t        processed;              /* Number of bytes processed */
2355
2356
2357   error = SSLRead((SSLContextRef)http->tls, buf, len, &processed);
2358
2359   if (error == 0)
2360     return (processed);
2361   else
2362   {
2363     http->error = error;
2364
2365     return (-1);
2366   }
2367 #  endif /* HAVE_LIBSSL */
2368 }
2369
2370
2371 /*
2372  * 'http_write_ssl()' - Write to a SSL/TLS connection.
2373  */
2374
2375 static int                              /* O - Bytes written */
2376 http_write_ssl(http_t     *http,        /* I - HTTP data */
2377                const char *buf,         /* I - Buffer holding data */
2378                int        len)          /* I - Length of buffer */
2379 {
2380 #  if defined(HAVE_LIBSSL)
2381   return (SSL_write((SSL *)(http->tls), buf, len));
2382
2383 #  elif defined(HAVE_GNUTLS)
2384   return (gnutls_record_send(((http_tls_t *)(http->tls))->session, buf, len));
2385 #  elif defined(HAVE_CDSASSL)
2386   OSStatus      error;                  /* Error info */
2387   size_t        processed;              /* Number of bytes processed */
2388
2389
2390   error = SSLWrite((SSLContextRef)http->tls, buf, len, &processed);
2391
2392   if (error == 0)
2393     return (processed);
2394   else
2395   {
2396     http->error = error;
2397     return (-1);
2398   }
2399 #  endif /* HAVE_LIBSSL */
2400 }
2401
2402
2403 #  if defined(HAVE_CDSASSL)
2404 /*
2405  * 'CDSAReadFunc()' - Read function for CDSA decryption code.
2406  */
2407
2408 static OSStatus                                 /* O  - -1 on error, 0 on success */
2409 CDSAReadFunc(SSLConnectionRef connection,       /* I  - SSL/TLS connection */
2410              void             *data,            /* I  - Data buffer */
2411              size_t           *dataLength)      /* IO - Number of bytes */
2412 {
2413   ssize_t       bytes;                          /* Number of bytes read */
2414
2415
2416   bytes = recv((int)connection, data, *dataLength, 0);
2417   if (bytes >= 0)
2418   {
2419     *dataLength = bytes;
2420     return (0);
2421   }
2422   else
2423     return (-1);
2424 }
2425
2426
2427 /*
2428  * 'CDSAWriteFunc()' - Write function for CDSA encryption code.
2429  */
2430
2431 static OSStatus                                 /* O  - -1 on error, 0 on success */
2432 CDSAWriteFunc(SSLConnectionRef connection,      /* I  - SSL/TLS connection */
2433               const void       *data,           /* I  - Data buffer */
2434               size_t           *dataLength)     /* IO - Number of bytes */
2435 {
2436   ssize_t bytes;
2437
2438
2439   bytes = write((int)connection, data, *dataLength);
2440   if (bytes >= 0)
2441   {
2442     *dataLength = bytes;
2443     return (0);
2444   }
2445   else
2446     return (-1);
2447 }
2448 #  endif /* HAVE_CDSASSL */
2449 #endif /* HAVE_SSL */
2450
2451
2452 /*
2453  * End of "$Id: http.c,v 1.82.2.38 2003/08/28 15:16:26 mike Exp $".
2454  */