cups/http.c

   1 /*
   2  * "$Id: http.c,v 1.82.2.56 2004/08/18 17:49:19 mike Exp $"
   3  *
   4  *   HTTP routines for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 1997-2004 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 20636-3142 USA
  19  *
  20  *       Voice: (301) 373-9600
  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  *   httpGetSubField()    - Get a sub-field value.
  39  *   httpSetField()       - Set the value of an HTTP header.
  40  *   httpDelete()         - Send a DELETE request to the server.
  41  *   httpGet()            - Send a GET request to the server.
  42  *   httpHead()           - Send a HEAD request to the server.
  43  *   httpOptions()        - Send an OPTIONS request to the server.
  44  *   httpPost()           - Send a POST request to the server.
  45  *   httpPut()            - Send a PUT request to the server.
  46  *   httpTrace()          - Send an TRACE request to the server.
  47  *   httpFlush()          - Flush data from a HTTP connection.
  48  *   httpRead()           - Read data from a HTTP connection.
  49  *   httpSetCookie()      - Set the cookie value(s)...
  50  *   httpWait()           - Wait for data available on a connection.
  51  *   httpWrite()          - Write data to a HTTP connection.
  52  *   httpGets()           - Get a line of text from a HTTP connection.
  53  *   httpPrintf()         - Print a formatted string to a HTTP connection.
  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  *   httpDecode64_2()     - Base64-decode a string.
  59  *   httpEncode64()       - Base64-encode a string.
  60  *   httpEncode64_2()     - Base64-encode a string.
  61  *   httpGetLength()      - Get the amount of data remaining from the
  62  *                          content-length or transfer-encoding fields.
  63  *   http_field()         - Return the field index for a field name.
  64  *   http_send()          - Send a request with all fields and the trailing
  65  *                          blank line.
  66  *   http_wait()          - Wait for data available on a connection.
  67  *   http_upgrade()       - Force upgrade to TLS encryption.
  68  *   http_setup_ssl()     - Set up SSL/TLS on a connection.
  69  *   http_shutdown_ssl()  - Shut down SSL/TLS on a connection.
  70  *   http_read_ssl()      - Read from a SSL/TLS connection.
  71  *   http_write_ssl()     - Write to a SSL/TLS connection.
  72  *   CDSAReadFunc()       - Read function for CDSA decryption code.
  73  *   CDSAWriteFunc()      - Write function for CDSA encryption code.
  74  */
  75
  76 /*
  77  * Include necessary headers...
  78  */
  79
  80 #include "http-private.h"
  81
  82 #include <stdio.h>
  83 #include <stdlib.h>
  84 #include <stdarg.h>
  85 #include <ctype.h>
  86 #include "string.h"
  87 #include <fcntl.h>
  88 #include <errno.h>
  89
  90 #include "http.h"
  91 #include "debug.h"
  92
  93 #ifndef WIN32
  94 #  include <signal.h>
  95 #  include <sys/time.h>
  96 #  include <sys/resource.h>
  97 #endif /* !WIN32 */
  98
  99
 100 /*
 101  * Some operating systems have done away with the Fxxxx constants for
 102  * the fcntl() call; this works around that "feature"...
 103  */
 104
 105 #ifndef FNONBLK
 106 #  define FNONBLK O_NONBLOCK
 107 #endif /* !FNONBLK */
 108
 109
 110 /*
 111  * Local functions...
 112  */
 113
 114 static http_field_t     http_field(const char *name);
 115 static int              http_send(http_t *http, http_state_t request,
 116                                   const char *uri);
 117 static int              http_wait(http_t *http, int msec);
 118 #ifdef HAVE_SSL
 119 static int              http_upgrade(http_t *http);
 120 static int              http_setup_ssl(http_t *http);
 121 static void             http_shutdown_ssl(http_t *http);
 122 static int              http_read_ssl(http_t *http, char *buf, int len);
 123 static int              http_write_ssl(http_t *http, const char *buf, int len);
 124 #  ifdef HAVE_CDSASSL
 125 static OSStatus         CDSAReadFunc(SSLConnectionRef connection, void *data, size_t *dataLength);
 126 static OSStatus         CDSAWriteFunc(SSLConnectionRef connection, const void *data, size_t *dataLength);
 127 #  endif /* HAVE_CDSASSL */
 128 #endif /* HAVE_SSL */
 129
 130
 131 /*
 132  * Local globals...
 133  */
 134
 135 static const char * const http_fields[] =
 136                         {
 137                           "Accept-Language",
 138                           "Accept-Ranges",
 139                           "Authorization",
 140                           "Connection",
 141                           "Content-Encoding",
 142                           "Content-Language",
 143                           "Content-Length",
 144                           "Content-Location",
 145                           "Content-MD5",
 146                           "Content-Range",
 147                           "Content-Type",
 148                           "Content-Version",
 149                           "Date",
 150                           "Host",
 151                           "If-Modified-Since",
 152                           "If-Unmodified-since",
 153                           "Keep-Alive",
 154                           "Last-Modified",
 155                           "Link",
 156                           "Location",
 157                           "Range",
 158                           "Referer",
 159                           "Retry-After",
 160                           "Transfer-Encoding",
 161                           "Upgrade",
 162                           "User-Agent",
 163                           "WWW-Authenticate"
 164                         };
 165 static const char * const days[7] =
 166                         {
 167                           "Sun",
 168                           "Mon",
 169                           "Tue",
 170                           "Wed",
 171                           "Thu",
 172                           "Fri",
 173                           "Sat"
 174                         };
 175 static const char * const months[12] =
 176                         {
 177                           "Jan",
 178                           "Feb",
 179                           "Mar",
 180                           "Apr",
 181                           "May",
 182                           "Jun",
 183                           "Jul",
 184                           "Aug",
 185                           "Sep",
 186                           "Oct",
 187                           "Nov",
 188                           "Dec"
 189                         };
 190
 191
 192 /*
 193  * 'httpInitialize()' - Initialize the HTTP interface library and set the
 194  *                      default HTTP proxy (if any).
 195  */
 196
 197 void
 198 httpInitialize(void)
 199 {
 200 #ifdef HAVE_LIBSSL
 201 #  ifndef WIN32
 202   struct timeval        curtime;        /* Current time in microseconds */
 203 #  endif /* !WIN32 */
 204   int                   i;              /* Looping var */
 205   unsigned char         data[1024];     /* Seed data */
 206 #endif /* HAVE_LIBSSL */
 207
 208 #ifdef WIN32
 209   WSADATA       winsockdata;            /* WinSock data */
 210   static int    initialized = 0;        /* Has WinSock been initialized? */
 211
 212
 213   if (!initialized)
 214     WSAStartup(MAKEWORD(1,1), &winsockdata);
 215 #elif defined(HAVE_SIGSET)
 216   sigset(SIGPIPE, SIG_IGN);
 217 #elif defined(HAVE_SIGACTION)
 218   struct sigaction      action;         /* POSIX sigaction data */
 219
 220
 221  /*
 222   * Ignore SIGPIPE signals...
 223   */
 224
 225   memset(&action, 0, sizeof(action));
 226   action.sa_handler = SIG_IGN;
 227   sigaction(SIGPIPE, &action, NULL);
 228 #else
 229   signal(SIGPIPE, SIG_IGN);
 230 #endif /* WIN32 */
 231
 232 #ifdef HAVE_GNUTLS
 233   gnutls_global_init();
 234 #endif /* HAVE_GNUTLS */
 235
 236 #ifdef HAVE_LIBSSL
 237   SSL_load_error_strings();
 238   SSL_library_init();
 239
 240  /*
 241   * Using the current time is a dubious random seed, but on some systems
 242   * it is the best we can do (on others, this seed isn't even used...)
 243   */
 244
 245 #ifdef WIN32
 246 #else
 247   gettimeofday(&curtime, NULL);
 248   srand(curtime.tv_sec + curtime.tv_usec);
 249 #endif /* WIN32 */
 250
 251   for (i = 0; i < sizeof(data); i ++)
 252     data[i] = rand(); /* Yes, this is a poor source of random data... */
 253
 254   RAND_seed(&data, sizeof(data));
 255 #endif /* HAVE_LIBSSL */
 256 }
 257
 258
 259 /*
 260  * 'httpCheck()' - Check to see if there is a pending response from the server.
 261  */
 262
 263 int                             /* O - 0 = no data, 1 = data available */
 264 httpCheck(http_t *http)         /* I - HTTP connection */
 265 {
 266   return (httpWait(http, 0));
 267 }
 268
 269
 270 /*
 271  * 'httpClearCookie()' - Clear the cookie value(s).
 272  */
 273
 274 void
 275 httpClearCookie(http_t *http)                   /* I - Connection */
 276 {
 277   if (!http)
 278     return;
 279
 280   if (http->cookie)
 281   {
 282     free(http->cookie);
 283     http->cookie = NULL;
 284   }
 285 }
 286
 287
 288 /*
 289  * 'httpClose()' - Close an HTTP connection...
 290  */
 291
 292 void
 293 httpClose(http_t *http)         /* I - Connection to close */
 294 {
 295   DEBUG_printf(("httpClose(http=%p)\n", http));
 296
 297   if (!http)
 298     return;
 299
 300   if (http->input_set)
 301     free(http->input_set);
 302
 303   if (http->cookie)
 304     free(http->cookie);
 305
 306 #ifdef HAVE_SSL
 307   if (http->tls)
 308     http_shutdown_ssl(http);
 309 #endif /* HAVE_SSL */
 310
 311 #ifdef WIN32
 312   closesocket(http->fd);
 313 #else
 314   close(http->fd);
 315 #endif /* WIN32 */
 316
 317   free(http);
 318 }
 319
 320
 321 /*
 322  * 'httpConnect()' - Connect to a HTTP server.
 323  */
 324
 325 http_t *                                /* O - New HTTP connection */
 326 httpConnect(const char *host,           /* I - Host to connect to */
 327             int        port)            /* I - Port number */
 328 {
 329   http_encryption_t     encrypt;        /* Type of encryption to use */
 330
 331
 332  /*
 333   * Set the default encryption status...
 334   */
 335
 336   if (port == 443)
 337     encrypt = HTTP_ENCRYPT_ALWAYS;
 338   else
 339     encrypt = HTTP_ENCRYPT_IF_REQUESTED;
 340
 341   return (httpConnectEncrypt(host, port, encrypt));
 342 }
 343
 344
 345 /*
 346  * 'httpConnectEncrypt()' - Connect to a HTTP server using encryption.
 347  */
 348
 349 http_t *                                /* O - New HTTP connection */
 350 httpConnectEncrypt(const char *host,    /* I - Host to connect to */
 351                    int        port,     /* I - Port number */
 352                    http_encryption_t encrypt)
 353                                         /* I - Type of encryption to use */
 354 {
 355   int                   i;              /* Looping var */
 356   http_t                *http;          /* New HTTP connection */
 357   struct hostent        *hostaddr;      /* Host address data */
 358
 359
 360   DEBUG_printf(("httpConnectEncrypt(host=\"%s\", port=%d, encrypt=%d)\n",
 361                 host ? host : "(null)", port, encrypt));
 362
 363   if (!host)
 364     return (NULL);
 365
 366   httpInitialize();
 367
 368  /*
 369   * Lookup the host...
 370   */
 371
 372   if ((hostaddr = httpGetHostByName(host)) == NULL)
 373   {
 374    /*
 375     * This hack to make users that don't have a localhost entry in
 376     * their hosts file or DNS happy...
 377     */
 378
 379     if (strcasecmp(host, "localhost") != 0)
 380       return (NULL);
 381     else if ((hostaddr = httpGetHostByName("127.0.0.1")) == NULL)
 382       return (NULL);
 383   }
 384
 385  /*
 386   * Verify that it is an IPv4, IPv6, or domain address...
 387   */
 388
 389   if ((hostaddr->h_addrtype != AF_INET || hostaddr->h_length != 4)
 390 #ifdef AF_INET6
 391       && (hostaddr->h_addrtype != AF_INET6 || hostaddr->h_length != 16)
 392 #endif /* AF_INET6 */
 393 #ifdef AF_LOCAL
 394       && (hostaddr->h_addrtype != AF_LOCAL)
 395 #endif /* AF_LOCAL */
 396       )
 397     return (NULL);
 398
 399  /*
 400   * Allocate memory for the structure...
 401   */
 402
 403   http = calloc(sizeof(http_t), 1);
 404   if (http == NULL)
 405     return (NULL);
 406
 407   http->version  = HTTP_1_1;
 408   http->blocking = 1;
 409   http->activity = time(NULL);
 410   http->fd       = -1;
 411
 412  /*
 413   * Set the encryption status...
 414   */
 415
 416   if (port == 443)                      /* Always use encryption for https */
 417     http->encryption = HTTP_ENCRYPT_ALWAYS;
 418   else
 419     http->encryption = encrypt;
 420
 421  /*
 422   * Loop through the addresses we have until one of them connects...
 423   */
 424
 425   strlcpy(http->hostname, host, sizeof(http->hostname));
 426
 427   for (i = 0; hostaddr->h_addr_list[i]; i ++)
 428   {
 429    /*
 430     * Load the address...
 431     */
 432
 433     httpAddrLoad(hostaddr, port, i, &(http->hostaddr));
 434
 435    /*
 436     * Connect to the remote system...
 437     */
 438
 439     if (!httpReconnect(http))
 440       return (http);
 441   }
 442
 443  /*
 444   * Could not connect to any known address - bail out!
 445   */
 446
 447   free(http);
 448   return (NULL);
 449 }
 450
 451
 452 /*
 453  * 'httpEncryption()' - Set the required encryption on the link.
 454  */
 455
 456 int                                     /* O - -1 on error, 0 on success */
 457 httpEncryption(http_t            *http, /* I - HTTP data */
 458                http_encryption_t e)     /* I - New encryption preference */
 459 {
 460   DEBUG_printf(("httpEncryption(http=%p, e=%d)\n", http, e));
 461
 462 #ifdef HAVE_SSL
 463   if (!http)
 464     return (0);
 465
 466   http->encryption = e;
 467
 468   if ((http->encryption == HTTP_ENCRYPT_ALWAYS && !http->tls) ||
 469       (http->encryption == HTTP_ENCRYPT_NEVER && http->tls))
 470     return (httpReconnect(http));
 471   else if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
 472     return (http_upgrade(http));
 473   else
 474     return (0);
 475 #else
 476   if (e == HTTP_ENCRYPT_ALWAYS || e == HTTP_ENCRYPT_REQUIRED)
 477     return (-1);
 478   else
 479     return (0);
 480 #endif /* HAVE_SSL */
 481 }
 482
 483
 484 /*
 485  * 'httpReconnect()' - Reconnect to a HTTP server...
 486  */
 487
 488 int                                     /* O - 0 on success, non-zero on failure */
 489 httpReconnect(http_t *http)             /* I - HTTP data */
 490 {
 491   int           val;                    /* Socket option value */
 492   int           status;                 /* Connect status */
 493
 494
 495   DEBUG_printf(("httpReconnect(http=%p)\n", http));
 496
 497   if (!http)
 498     return (-1);
 499
 500 #ifdef HAVE_SSL
 501   if (http->tls)
 502     http_shutdown_ssl(http);
 503 #endif /* HAVE_SSL */
 504
 505  /*
 506   * Close any previously open socket...
 507   */
 508
 509   if (http->fd >= 0)
 510 #ifdef WIN32
 511     closesocket(http->fd);
 512 #else
 513     close(http->fd);
 514 #endif /* WIN32 */
 515
 516  /*
 517   * Create the socket and set options to allow reuse.
 518   */
 519
 520   if ((http->fd = socket(http->hostaddr.addr.sa_family, SOCK_STREAM, 0)) < 0)
 521   {
 522 #ifdef WIN32
 523     http->error  = WSAGetLastError();
 524 #else
 525     http->error  = errno;
 526 #endif /* WIN32 */
 527     http->status = HTTP_ERROR;
 528     return (-1);
 529   }
 530
 531 #ifdef FD_CLOEXEC
 532   fcntl(http->fd, F_SETFD, FD_CLOEXEC); /* Close this socket when starting *
 533                                          * other processes...              */
 534 #endif /* FD_CLOEXEC */
 535
 536   val = 1;
 537   setsockopt(http->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
 538
 539 #ifdef SO_REUSEPORT
 540   val = 1;
 541   setsockopt(http->fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val));
 542 #endif /* SO_REUSEPORT */
 543
 544  /*
 545   * Using TCP_NODELAY improves responsiveness, especially on systems
 546   * with a slow loopback interface...  Since we write large buffers
 547   * when sending print files and requests, there shouldn't be any
 548   * performance penalty for this...
 549   */
 550
 551   val = 1;
 552 #ifdef WIN32
 553   setsockopt(http->fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val));
 554 #else
 555   setsockopt(http->fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
 556 #endif // WIN32
 557
 558  /*
 559   * Connect to the server...
 560   */
 561
 562 #ifdef AF_INET6
 563   if (http->hostaddr.addr.sa_family == AF_INET6)
 564     status = connect(http->fd, (struct sockaddr *)&(http->hostaddr),
 565                      sizeof(http->hostaddr.ipv6));
 566   else
 567 #endif /* AF_INET6 */
 568 #ifdef AF_LOCAL
 569   if (http->hostaddr.addr.sa_family == AF_LOCAL)
 570     status = connect(http->fd, (struct sockaddr *)&(http->hostaddr),
 571                      SUN_LEN(&(http->hostaddr.un)));
 572   else
 573 #endif /* AF_LOCAL */
 574   status = connect(http->fd, (struct sockaddr *)&(http->hostaddr),
 575                    sizeof(http->hostaddr.ipv4));
 576
 577   if (status < 0)
 578   {
 579 #ifdef WIN32
 580     http->error  = WSAGetLastError();
 581 #else
 582     http->error  = errno;
 583 #endif /* WIN32 */
 584     http->status = HTTP_ERROR;
 585
 586 #ifdef WIN32
 587     closesocket(http->fd);
 588 #else
 589     close(http->fd);
 590 #endif
 591
 592     http->fd = -1;
 593
 594     return (-1);
 595   }
 596
 597   http->error  = 0;
 598   http->status = HTTP_CONTINUE;
 599
 600 #ifdef HAVE_SSL
 601   if (http->encryption == HTTP_ENCRYPT_ALWAYS)
 602   {
 603    /*
 604     * Always do encryption via SSL.
 605     */
 606
 607     if (http_setup_ssl(http) != 0)
 608     {
 609 #ifdef WIN32
 610       closesocket(http->fd);
 611 #else
 612       close(http->fd);
 613 #endif /* WIN32 */
 614
 615       return (-1);
 616     }
 617   }
 618   else if (http->encryption == HTTP_ENCRYPT_REQUIRED)
 619     return (http_upgrade(http));
 620 #endif /* HAVE_SSL */
 621
 622   return (0);
 623 }
 624
 625
 626 /*
 627  * 'httpGetSubField()' - Get a sub-field value.
 628  */
 629
 630 char *                                  /* O - Value or NULL */
 631 httpGetSubField(http_t       *http,     /* I - HTTP data */
 632                 http_field_t field,     /* I - Field index */
 633                 const char   *name,     /* I - Name of sub-field */
 634                 char         *value)    /* O - Value string */
 635 {
 636   const char    *fptr;                  /* Pointer into field */
 637   char          temp[HTTP_MAX_VALUE],   /* Temporary buffer for name */
 638                 *ptr;                   /* Pointer into string buffer */
 639
 640
 641   DEBUG_printf(("httpGetSubField(http=%p, field=%d, name=\"%s\", value=%p)\n",
 642                 http, field, name, value));
 643
 644   if (http == NULL ||
 645       field < HTTP_FIELD_ACCEPT_LANGUAGE ||
 646       field > HTTP_FIELD_WWW_AUTHENTICATE ||
 647       name == NULL || value == NULL)
 648     return (NULL);
 649
 650   for (fptr = http->fields[field]; *fptr;)
 651   {
 652    /*
 653     * Skip leading whitespace...
 654     */
 655
 656     while (isspace(*fptr & 255))
 657       fptr ++;
 658
 659     if (*fptr == ',')
 660     {
 661       fptr ++;
 662       continue;
 663     }
 664
 665    /*
 666     * Get the sub-field name...
 667     */
 668
 669     for (ptr = temp;
 670          *fptr && *fptr != '=' && !isspace(*fptr & 255) && ptr < (temp + sizeof(temp) - 1);
 671          *ptr++ = *fptr++);
 672
 673     *ptr = '\0';
 674
 675     DEBUG_printf(("httpGetSubField: name=\"%s\"\n", temp));
 676
 677    /*
 678     * Skip trailing chars up to the '='...
 679     */
 680
 681     while (isspace(*fptr & 255))
 682       fptr ++;
 683
 684     if (!*fptr)
 685       break;
 686
 687     if (*fptr != '=')
 688       continue;
 689
 690    /*
 691     * Skip = and leading whitespace...
 692     */
 693
 694     fptr ++;
 695
 696     while (isspace(*fptr & 255))
 697       fptr ++;
 698
 699     if (*fptr == '\"')
 700     {
 701      /*
 702       * Read quoted string...
 703       */
 704
 705       for (ptr = value, fptr ++;
 706            *fptr && *fptr != '\"' && ptr < (value + HTTP_MAX_VALUE - 1);
 707            *ptr++ = *fptr++);
 708
 709       *ptr = '\0';
 710
 711       while (*fptr && *fptr != '\"')
 712         fptr ++;
 713
 714       if (*fptr)
 715         fptr ++;
 716     }
 717     else
 718     {
 719      /*
 720       * Read unquoted string...
 721       */
 722
 723       for (ptr = value;
 724            *fptr && !isspace(*fptr & 255) && *fptr != ',' && ptr < (value + HTTP_MAX_VALUE - 1);
 725            *ptr++ = *fptr++);
 726
 727       *ptr = '\0';
 728
 729       while (*fptr && !isspace(*fptr & 255) && *fptr != ',')
 730         fptr ++;
 731     }
 732
 733     DEBUG_printf(("httpGetSubField: value=\"%s\"\n", value));
 734
 735    /*
 736     * See if this is the one...
 737     */
 738
 739     if (strcmp(name, temp) == 0)
 740       return (value);
 741   }
 742
 743   value[0] = '\0';
 744
 745   return (NULL);
 746 }
 747
 748
 749 /*
 750  * 'httpSetField()' - Set the value of an HTTP header.
 751  */
 752
 753 void
 754 httpSetField(http_t       *http,        /* I - HTTP data */
 755              http_field_t field,        /* I - Field index */
 756              const char   *value)       /* I - Value */
 757 {
 758   if (http == NULL ||
 759       field < HTTP_FIELD_ACCEPT_LANGUAGE ||
 760       field > HTTP_FIELD_WWW_AUTHENTICATE ||
 761       value == NULL)
 762     return;
 763
 764   strlcpy(http->fields[field], value, HTTP_MAX_VALUE);
 765 }
 766
 767
 768 /*
 769  * 'httpDelete()' - Send a DELETE request to the server.
 770  */
 771
 772 int                                     /* O - Status of call (0 = success) */
 773 httpDelete(http_t     *http,            /* I - HTTP data */
 774            const char *uri)             /* I - URI to delete */
 775 {
 776   return (http_send(http, HTTP_DELETE, uri));
 777 }
 778
 779
 780 /*
 781  * 'httpGet()' - Send a GET request to the server.
 782  */
 783
 784 int                                     /* O - Status of call (0 = success) */
 785 httpGet(http_t     *http,               /* I - HTTP data */
 786         const char *uri)                /* I - URI to get */
 787 {
 788   return (http_send(http, HTTP_GET, uri));
 789 }
 790
 791
 792 /*
 793  * 'httpHead()' - Send a HEAD request to the server.
 794  */
 795
 796 int                                     /* O - Status of call (0 = success) */
 797 httpHead(http_t     *http,              /* I - HTTP data */
 798          const char *uri)               /* I - URI for head */
 799 {
 800   return (http_send(http, HTTP_HEAD, uri));
 801 }
 802
 803
 804 /*
 805  * 'httpOptions()' - Send an OPTIONS request to the server.
 806  */
 807
 808 int                                     /* O - Status of call (0 = success) */
 809 httpOptions(http_t     *http,           /* I - HTTP data */
 810             const char *uri)            /* I - URI for options */
 811 {
 812   return (http_send(http, HTTP_OPTIONS, uri));
 813 }
 814
 815
 816 /*
 817  * 'httpPost()' - Send a POST request to the server.
 818  */
 819
 820 int                                     /* O - Status of call (0 = success) */
 821 httpPost(http_t     *http,              /* I - HTTP data */
 822          const char *uri)               /* I - URI for post */
 823 {
 824   httpGetLength(http);
 825
 826   return (http_send(http, HTTP_POST, uri));
 827 }
 828
 829
 830 /*
 831  * 'httpPut()' - Send a PUT request to the server.
 832  */
 833
 834 int                                     /* O - Status of call (0 = success) */
 835 httpPut(http_t     *http,               /* I - HTTP data */
 836         const char *uri)                /* I - URI to put */
 837 {
 838   httpGetLength(http);
 839
 840   return (http_send(http, HTTP_PUT, uri));
 841 }
 842
 843
 844 /*
 845  * 'httpTrace()' - Send an TRACE request to the server.
 846  */
 847
 848 int                                     /* O - Status of call (0 = success) */
 849 httpTrace(http_t     *http,             /* I - HTTP data */
 850           const char *uri)              /* I - URI for trace */
 851 {
 852   return (http_send(http, HTTP_TRACE, uri));
 853 }
 854
 855
 856 /*
 857  * 'httpFlush()' - Flush data from a HTTP connection.
 858  */
 859
 860 void
 861 httpFlush(http_t *http)                 /* I - HTTP data */
 862 {
 863   char  buffer[8192];                   /* Junk buffer */
 864
 865
 866   DEBUG_printf(("httpFlush(http=%p), state=%d\n", http, http->state));
 867
 868   while (httpRead(http, buffer, sizeof(buffer)) > 0);
 869 }
 870
 871
 872 /*
 873  * 'httpRead()' - Read data from a HTTP connection.
 874  */
 875
 876 int                                     /* O - Number of bytes read */
 877 httpRead(http_t *http,                  /* I - HTTP data */
 878          char   *buffer,                /* I - Buffer for data */
 879          int    length)                 /* I - Maximum number of bytes */
 880 {
 881   int           bytes;                  /* Bytes read */
 882   char          len[32];                /* Length string */
 883
 884
 885   DEBUG_printf(("httpRead(http=%p, buffer=%p, length=%d)\n",
 886                 http, buffer, length));
 887
 888   if (http == NULL || buffer == NULL)
 889     return (-1);
 890
 891   http->activity = time(NULL);
 892
 893   if (length <= 0)
 894     return (0);
 895
 896   if (http->data_encoding == HTTP_ENCODE_CHUNKED &&
 897       http->data_remaining <= 0)
 898   {
 899     DEBUG_puts("httpRead: Getting chunk length...");
 900
 901     if (httpGets(len, sizeof(len), http) == NULL)
 902     {
 903       DEBUG_puts("httpRead: Could not get length!");
 904       return (0);
 905     }
 906
 907     http->data_remaining = strtol(len, NULL, 16);
 908     if (http->data_remaining < 0)
 909     {
 910       DEBUG_puts("httpRead: Negative chunk length!");
 911       return (0);
 912     }
 913   }
 914
 915   DEBUG_printf(("httpRead: data_remaining=%d\n", http->data_remaining));
 916
 917   if (http->data_remaining <= 0)
 918   {
 919    /*
 920     * A zero-length chunk ends a transfer; unless we are reading POST
 921     * data, go idle...
 922     */
 923
 924     if (http->data_encoding == HTTP_ENCODE_CHUNKED)
 925       httpGets(len, sizeof(len), http);
 926
 927     if (http->state == HTTP_POST_RECV)
 928       http->state ++;
 929     else
 930       http->state = HTTP_WAITING;
 931
 932    /*
 933     * Prevent future reads for this request...
 934     */
 935
 936     http->data_encoding = HTTP_ENCODE_LENGTH;
 937
 938     return (0);
 939   }
 940   else if (length > http->data_remaining)
 941     length = http->data_remaining;
 942
 943   if (http->used == 0 && length <= 256)
 944   {
 945    /*
 946     * Buffer small reads for better performance...
 947     */
 948
 949     if (!http->blocking && !httpWait(http, 1000))
 950       return (0);
 951
 952     if (http->data_remaining > sizeof(http->buffer))
 953       bytes = sizeof(http->buffer);
 954     else
 955       bytes = http->data_remaining;
 956
 957 #ifdef HAVE_SSL
 958     if (http->tls)
 959       bytes = http_read_ssl(http, http->buffer, bytes);
 960     else
 961 #endif /* HAVE_SSL */
 962     {
 963       DEBUG_printf(("httpRead: reading %d bytes from socket into buffer...\n",
 964                     bytes));
 965
 966       bytes = recv(http->fd, http->buffer, bytes, 0);
 967
 968       DEBUG_printf(("httpRead: read %d bytes from socket into buffer...\n",
 969                     bytes));
 970     }
 971
 972     if (bytes > 0)
 973       http->used = bytes;
 974     else if (bytes < 0)
 975     {
 976 #ifdef WIN32
 977       http->error = WSAGetLastError();
 978       return (-1);
 979 #else
 980       if (errno != EINTR)
 981       {
 982         http->error = errno;
 983         return (-1);
 984       }
 985 #endif /* WIN32 */
 986     }
 987     else
 988     {
 989       http->error = EPIPE;
 990       return (0);
 991     }
 992   }
 993
 994   if (http->used > 0)
 995   {
 996     if (length > http->used)
 997       length = http->used;
 998
 999     bytes = length;
1000
1001     DEBUG_printf(("httpRead: grabbing %d bytes from input buffer...\n", bytes));
1002
1003     memcpy(buffer, http->buffer, length);
1004     http->used -= length;
1005
1006     if (http->used > 0)
1007       memmove(http->buffer, http->buffer + length, http->used);
1008   }
1009 #ifdef HAVE_SSL
1010   else if (http->tls)
1011   {
1012     if (!http->blocking && !httpWait(http, 1000))
1013       return (0);
1014
1015     bytes = http_read_ssl(http, buffer, length);
1016   }
1017 #endif /* HAVE_SSL */
1018   else
1019   {
1020     if (!http->blocking && !httpWait(http, 1000))
1021       return (0);
1022
1023     DEBUG_printf(("httpRead: reading %d bytes from socket...\n", length));
1024     bytes = recv(http->fd, buffer, length, 0);
1025     DEBUG_printf(("httpRead: read %d bytes from socket...\n", bytes));
1026   }
1027
1028   if (bytes > 0)
1029     http->data_remaining -= bytes;
1030   else if (bytes < 0)
1031   {
1032 #ifdef WIN32
1033     http->error = WSAGetLastError();
1034 #else
1035     if (errno == EINTR)
1036       bytes = 0;
1037     else
1038       http->error = errno;
1039 #endif /* WIN32 */
1040   }
1041   else
1042   {
1043     http->error = EPIPE;
1044     return (0);
1045   }
1046
1047   if (http->data_remaining == 0)
1048   {
1049     if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1050       httpGets(len, sizeof(len), http);
1051
1052     if (http->data_encoding != HTTP_ENCODE_CHUNKED)
1053     {
1054       if (http->state == HTTP_POST_RECV)
1055         http->state ++;
1056       else
1057         http->state = HTTP_WAITING;
1058     }
1059   }
1060
1061 #ifdef DEBUG
1062   {
1063     int i, j, ch;
1064     printf("httpRead: Read %d bytes:\n", bytes);
1065     for (i = 0; i < bytes; i += 16)
1066     {
1067       printf("   ");
1068
1069       for (j = 0; j < 16 && (i + j) < bytes; j ++)
1070         printf(" %02X", buffer[i + j] & 255);
1071
1072       while (j < 16)
1073       {
1074         printf("   ");
1075         j ++;
1076       }
1077
1078       printf("    ");
1079       for (j = 0; j < 16 && (i + j) < bytes; j ++)
1080       {
1081         ch = buffer[i + j] & 255;
1082
1083         if (ch < ' ' || ch == 127)
1084           ch = '.';
1085
1086         putchar(ch);
1087       }
1088       putchar('\n');
1089     }
1090   }
1091 #endif /* DEBUG */
1092
1093   return (bytes);
1094 }
1095
1096
1097 /*
1098  * 'httpSetCookie()' - Set the cookie value(s)...
1099  */
1100
1101 void
1102 httpSetCookie(http_t     *http,         /* I - Connection */
1103               const char *cookie)       /* I - Cookie string */
1104 {
1105   if (!http)
1106     return;
1107
1108   if (http->cookie)
1109     free(http->cookie);
1110
1111   if (cookie)
1112     http->cookie = strdup(cookie);
1113   else
1114     http->cookie = NULL;
1115 }
1116
1117
1118 /*
1119  * 'httpWait()' - Wait for data available on a connection.
1120  */
1121
1122 int                                     /* O - 1 if data is available, 0 otherwise */
1123 httpWait(http_t *http,                  /* I - HTTP data */
1124          int    msec)                   /* I - Milliseconds to wait */
1125 {
1126  /*
1127   * First see if there is data in the buffer...
1128   */
1129
1130   if (http == NULL)
1131     return (0);
1132
1133   if (http->used)
1134     return (1);
1135
1136  /*
1137   * If not, check the SSL/TLS buffers and do a select() on the connection...
1138   */
1139
1140   return (http_wait(http, msec));
1141 }
1142
1143
1144 /*
1145  * 'httpWrite()' - Write data to a HTTP connection.
1146  */
1147
1148 int                                     /* O - Number of bytes written */
1149 httpWrite(http_t     *http,             /* I - HTTP data */
1150           const char *buffer,           /* I - Buffer for data */
1151           int        length)            /* I - Number of bytes to write */
1152 {
1153   int   tbytes,                         /* Total bytes sent */
1154         bytes;                          /* Bytes sent */
1155
1156
1157   if (http == NULL || buffer == NULL)
1158     return (-1);
1159
1160   http->activity = time(NULL);
1161
1162   if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1163   {
1164     if (httpPrintf(http, "%x\r\n", length) < 0)
1165       return (-1);
1166
1167     if (length == 0)
1168     {
1169      /*
1170       * A zero-length chunk ends a transfer; unless we are sending POST
1171       * or PUT data, go idle...
1172       */
1173
1174       DEBUG_puts("httpWrite: changing states...");
1175
1176       if (http->state == HTTP_POST_RECV)
1177         http->state ++;
1178       else if (http->state == HTTP_PUT_RECV)
1179         http->state = HTTP_STATUS;
1180       else
1181         http->state = HTTP_WAITING;
1182
1183       if (httpPrintf(http, "\r\n") < 0)
1184         return (-1);
1185
1186       return (0);
1187     }
1188   }
1189
1190   tbytes = 0;
1191
1192   while (length > 0)
1193   {
1194 #ifdef HAVE_SSL
1195     if (http->tls)
1196       bytes = http_write_ssl(http, buffer, length);
1197     else
1198 #endif /* HAVE_SSL */
1199     bytes = send(http->fd, buffer, length, 0);
1200
1201     if (bytes < 0)
1202     {
1203 #ifdef WIN32
1204       if (WSAGetLastError() != http->error)
1205       {
1206         http->error = WSAGetLastError();
1207         continue;
1208       }
1209 #else
1210       if (errno == EINTR)
1211         continue;
1212       else if (errno != http->error && errno != ECONNRESET)
1213       {
1214         http->error = errno;
1215         continue;
1216       }
1217 #endif /* WIN32 */
1218
1219       DEBUG_puts("httpWrite: error writing data...\n");
1220
1221       return (-1);
1222     }
1223
1224     buffer += bytes;
1225     tbytes += bytes;
1226     length -= bytes;
1227     if (http->data_encoding == HTTP_ENCODE_LENGTH)
1228       http->data_remaining -= bytes;
1229   }
1230
1231   if (http->data_encoding == HTTP_ENCODE_CHUNKED)
1232     if (httpPrintf(http, "\r\n") < 0)
1233       return (-1);
1234
1235   if (http->data_remaining == 0 && http->data_encoding == HTTP_ENCODE_LENGTH)
1236   {
1237    /*
1238     * Finished with the transfer; unless we are sending POST or PUT
1239     * data, go idle...
1240     */
1241
1242     DEBUG_puts("httpWrite: changing states...");
1243
1244     if (http->state == HTTP_POST_RECV)
1245       http->state ++;
1246     else if (http->state == HTTP_PUT_RECV)
1247       http->state = HTTP_STATUS;
1248     else
1249       http->state = HTTP_WAITING;
1250   }
1251
1252 #ifdef DEBUG
1253   {
1254     int i, j, ch;
1255     printf("httpWrite: wrote %d bytes: \n", tbytes);
1256     for (i = 0, buffer -= tbytes; i < tbytes; i += 16)
1257     {
1258       printf("   ");
1259
1260       for (j = 0; j < 16 && (i + j) < tbytes; j ++)
1261         printf(" %02X", buffer[i + j] & 255);
1262
1263       while (j < 16)
1264       {
1265         printf("   ");
1266         j ++;
1267       }
1268
1269       printf("    ");
1270       for (j = 0; j < 16 && (i + j) < tbytes; j ++)
1271       {
1272         ch = buffer[i + j] & 255;
1273
1274         if (ch < ' ' || ch == 127)
1275           ch = '.';
1276
1277         putchar(ch);
1278       }
1279       putchar('\n');
1280     }
1281   }
1282 #endif /* DEBUG */
1283   return (tbytes);
1284 }
1285
1286
1287 /*
1288  * 'httpGets()' - Get a line of text from a HTTP connection.
1289  */
1290
1291 char *                                  /* O - Line or NULL */
1292 httpGets(char   *line,                  /* I - Line to read into */
1293          int    length,                 /* I - Max length of buffer */
1294          http_t *http)                  /* I - HTTP data */
1295 {
1296   char  *lineptr,                       /* Pointer into line */
1297         *bufptr,                        /* Pointer into input buffer */
1298         *bufend;                        /* Pointer to end of buffer */
1299   int   bytes;                          /* Number of bytes read */
1300
1301
1302   DEBUG_printf(("httpGets(line=%p, length=%d, http=%p)\n", line, length, http));
1303
1304   if (http == NULL || line == NULL)
1305     return (NULL);
1306
1307  /*
1308   * Pre-scan the buffer and see if there is a newline in there...
1309   */
1310
1311 #ifdef WIN32
1312   WSASetLastError(0);
1313 #else
1314   errno = 0;
1315 #endif /* WIN32 */
1316
1317   do
1318   {
1319     bufptr  = http->buffer;
1320     bufend  = http->buffer + http->used;
1321
1322     while (bufptr < bufend)
1323       if (*bufptr == 0x0a)
1324         break;
1325       else
1326         bufptr ++;
1327
1328     if (bufptr >= bufend && http->used < HTTP_MAX_BUFFER)
1329     {
1330      /*
1331       * No newline; see if there is more data to be read...
1332       */
1333
1334       if (!http->blocking && !http_wait(http, 1000))
1335         return (NULL);
1336
1337 #ifdef HAVE_SSL
1338       if (http->tls)
1339         bytes = http_read_ssl(http, bufend, HTTP_MAX_BUFFER - http->used);
1340       else
1341 #endif /* HAVE_SSL */
1342         bytes = recv(http->fd, bufend, HTTP_MAX_BUFFER - http->used, 0);
1343
1344       DEBUG_printf(("httpGets: read %d bytes...\n", bytes));
1345
1346       if (bytes < 0)
1347       {
1348        /*
1349         * Nope, can't get a line this time...
1350         */
1351
1352 #ifdef WIN32
1353         if (WSAGetLastError() != http->error)
1354         {
1355           http->error = WSAGetLastError();
1356           continue;
1357         }
1358
1359         DEBUG_printf(("httpGets: recv() error %d!\n", WSAGetLastError()));
1360 #else
1361         DEBUG_printf(("httpGets: recv() error %d!\n", errno));
1362
1363         if (errno == EINTR)
1364           continue;
1365         else if (errno != http->error)
1366         {
1367           http->error = errno;
1368           continue;
1369         }
1370 #endif /* WIN32 */
1371
1372         return (NULL);
1373       }
1374       else if (bytes == 0)
1375       {
1376         http->error = EPIPE;
1377
1378         return (NULL);
1379       }
1380
1381      /*
1382       * Yup, update the amount used and the end pointer...
1383       */
1384
1385       http->used += bytes;
1386       bufend     += bytes;
1387       bufptr     = bufend;
1388     }
1389   }
1390   while (bufptr >= bufend && http->used < HTTP_MAX_BUFFER);
1391
1392   http->activity = time(NULL);
1393
1394  /*
1395   * Read a line from the buffer...
1396   */
1397
1398   lineptr = line;
1399   bufptr  = http->buffer;
1400   bytes   = 0;
1401   length --;
1402
1403   while (bufptr < bufend && bytes < length)
1404   {
1405     bytes ++;
1406
1407     if (*bufptr == 0x0a)
1408     {
1409       bufptr ++;
1410       break;
1411     }
1412     else if (*bufptr == 0x0d)
1413       bufptr ++;
1414     else
1415       *lineptr++ = *bufptr++;
1416   }
1417
1418   if (bytes > 0)
1419   {
1420     *lineptr = '\0';
1421
1422     http->used -= bytes;
1423     if (http->used > 0)
1424       memmove(http->buffer, bufptr, http->used);
1425
1426     DEBUG_printf(("httpGets: Returning \"%s\"\n", line));
1427     return (line);
1428   }
1429
1430   DEBUG_puts("httpGets: No new line available!");
1431
1432   return (NULL);
1433 }
1434
1435
1436 /*
1437  * 'httpPrintf()' - Print a formatted string to a HTTP connection.
1438  */
1439
1440 int                                     /* O - Number of bytes written */
1441 httpPrintf(http_t     *http,            /* I - HTTP data */
1442            const char *format,          /* I - printf-style format string */
1443            ...)                         /* I - Additional args as needed */
1444 {
1445   int           bytes,                  /* Number of bytes to write */
1446                 nbytes,                 /* Number of bytes written */
1447                 tbytes;                 /* Number of bytes all together */
1448   char          buf[HTTP_MAX_BUFFER],   /* Buffer for formatted string */
1449                 *bufptr;                /* Pointer into buffer */
1450   va_list       ap;                     /* Variable argument pointer */
1451
1452
1453   DEBUG_printf(("httpPrintf(http=%p, format=\"%s\", ...)\n", http, format));
1454
1455   va_start(ap, format);
1456   bytes = vsnprintf(buf, sizeof(buf), format, ap);
1457   va_end(ap);
1458
1459   DEBUG_printf(("httpPrintf: %s", buf));
1460
1461   for (tbytes = 0, bufptr = buf; tbytes < bytes; tbytes += nbytes, bufptr += nbytes)
1462   {
1463 #ifdef HAVE_SSL
1464     if (http->tls)
1465       nbytes = http_write_ssl(http, bufptr, bytes - tbytes);
1466     else
1467 #endif /* HAVE_SSL */
1468     nbytes = send(http->fd, bufptr, bytes - tbytes, 0);
1469
1470     if (nbytes < 0)
1471     {
1472       nbytes = 0;
1473
1474 #ifdef WIN32
1475       if (WSAGetLastError() != http->error)
1476       {
1477         http->error = WSAGetLastError();
1478         continue;
1479       }
1480 #else
1481       if (errno == EINTR)
1482         continue;
1483       else if (errno != http->error)
1484       {
1485         http->error = errno;
1486         continue;
1487       }
1488 #endif /* WIN32 */
1489
1490       return (-1);
1491     }
1492   }
1493
1494   return (bytes);
1495 }
1496
1497
1498 /*
1499  * 'httpGetDateString()' - Get a formatted date/time string from a time value.
1500  */
1501
1502 const char *                            /* O - Date/time string */
1503 httpGetDateString(time_t t)             /* I - UNIX time */
1504 {
1505   struct tm     *tdate;
1506   static char   datetime[256];
1507
1508
1509   tdate = gmtime(&t);
1510   snprintf(datetime, sizeof(datetime), "%s, %02d %s %d %02d:%02d:%02d GMT",
1511            days[tdate->tm_wday], tdate->tm_mday, months[tdate->tm_mon],
1512            tdate->tm_year + 1900, tdate->tm_hour, tdate->tm_min, tdate->tm_sec);
1513
1514   return (datetime);
1515 }
1516
1517
1518 /*
1519  * 'httpGetDateTime()' - Get a time value from a formatted date/time string.
1520  */
1521
1522 time_t                                  /* O - UNIX time */
1523 httpGetDateTime(const char *s)          /* I - Date/time string */
1524 {
1525   int           i;                      /* Looping var */
1526   struct tm     tdate;                  /* Time/date structure */
1527   char          mon[16];                /* Abbreviated month name */
1528   int           day, year;              /* Day of month and year */
1529   int           hour, min, sec;         /* Time */
1530
1531
1532   if (sscanf(s, "%*s%d%15s%d%d:%d:%d", &day, mon, &year, &hour, &min, &sec) < 6)
1533     return (0);
1534
1535   for (i = 0; i < 12; i ++)
1536     if (strcasecmp(mon, months[i]) == 0)
1537       break;
1538
1539   if (i >= 12)
1540     return (0);
1541
1542   tdate.tm_mon   = i;
1543   tdate.tm_mday  = day;
1544   tdate.tm_year  = year - 1900;
1545   tdate.tm_hour  = hour;
1546   tdate.tm_min   = min;
1547   tdate.tm_sec   = sec;
1548   tdate.tm_isdst = 0;
1549
1550   return (mktime(&tdate));
1551 }
1552
1553
1554 /*
1555  * 'httpUpdate()' - Update the current HTTP state for incoming data.
1556  */
1557
1558 http_status_t                           /* O - HTTP status */
1559 httpUpdate(http_t *http)                /* I - HTTP data */
1560 {
1561   char          line[1024],             /* Line from connection... */
1562                 *value;                 /* Pointer to value on line */
1563   http_field_t  field;                  /* Field index */
1564   int           major, minor,           /* HTTP version numbers */
1565                 status;                 /* Request status */
1566
1567
1568   DEBUG_printf(("httpUpdate(http=%p), state=%d\n", http, http->state));
1569
1570  /*
1571   * If we haven't issued any commands, then there is nothing to "update"...
1572   */
1573
1574   if (http->state == HTTP_WAITING)
1575     return (HTTP_CONTINUE);
1576
1577  /*
1578   * Grab all of the lines we can from the connection...
1579   */
1580
1581   while (httpGets(line, sizeof(line), http) != NULL)
1582   {
1583     DEBUG_printf(("httpUpdate: Got \"%s\"\n", line));
1584
1585     if (line[0] == '\0')
1586     {
1587      /*
1588       * Blank line means the start of the data section (if any).  Return
1589       * the result code, too...
1590       *
1591       * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
1592       * Instead, we just return HTTP_CONTINUE to the caller and keep on
1593       * tryin'...
1594       */
1595
1596       if (http->status == HTTP_CONTINUE)
1597         return (http->status);
1598
1599       if (http->status < HTTP_BAD_REQUEST)
1600         http->digest_tries = 0;
1601
1602 #ifdef HAVE_SSL
1603       if (http->status == HTTP_SWITCHING_PROTOCOLS && !http->tls)
1604       {
1605         if (http_setup_ssl(http) != 0)
1606         {
1607 #  ifdef WIN32
1608           closesocket(http->fd);
1609 #  else
1610           close(http->fd);
1611 #  endif /* WIN32 */
1612
1613           return (HTTP_ERROR);
1614         }
1615
1616         return (HTTP_CONTINUE);
1617       }
1618 #endif /* HAVE_SSL */
1619
1620       httpGetLength(http);
1621
1622       switch (http->state)
1623       {
1624         case HTTP_GET :
1625         case HTTP_POST :
1626         case HTTP_POST_RECV :
1627         case HTTP_PUT :
1628             http->state ++;
1629         case HTTP_POST_SEND :
1630             break;
1631
1632         default :
1633             http->state = HTTP_WAITING;
1634             break;
1635       }
1636
1637       return (http->status);
1638     }
1639     else if (strncmp(line, "HTTP/", 5) == 0)
1640     {
1641      /*
1642       * Got the beginning of a response...
1643       */
1644
1645       if (sscanf(line, "HTTP/%d.%d%d", &major, &minor, &status) != 3)
1646         return (HTTP_ERROR);
1647
1648       http->version = (http_version_t)(major * 100 + minor);
1649       http->status  = (http_status_t)status;
1650     }
1651     else if ((value = strchr(line, ':')) != NULL)
1652     {
1653      /*
1654       * Got a value...
1655       */
1656
1657       *value++ = '\0';
1658       while (isspace(*value & 255))
1659         value ++;
1660
1661      /*
1662       * Be tolerants of servers that send unknown attribute fields...
1663       */
1664
1665       if (!strcasecmp(line, "expect"))
1666       {
1667        /*
1668         * "Expect: 100-continue" or similar...
1669         */
1670
1671         http->expect = (http_status_t)atoi(value);
1672       }
1673       else if (!strcasecmp(line, "cookie"))
1674       {
1675        /*
1676         * "Cookie: name=value[; name=value ...]" - replaces previous cookies...
1677         */
1678
1679         httpSetCookie(http, value);
1680       }
1681       else if ((field = http_field(line)) == HTTP_FIELD_UNKNOWN)
1682       {
1683         DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line));
1684         continue;
1685       }
1686       else
1687         httpSetField(http, field, value);
1688     }
1689     else
1690     {
1691       http->status = HTTP_ERROR;
1692       return (HTTP_ERROR);
1693     }
1694   }
1695
1696  /*
1697   * See if there was an error...
1698   */
1699
1700   if (http->error == EPIPE && http->status > HTTP_CONTINUE)
1701     return (http->status);
1702
1703   if (http->error)
1704   {
1705     DEBUG_printf(("httpUpdate: socket error %d - %s\n", http->error,
1706                   strerror(http->error)));
1707     http->status = HTTP_ERROR;
1708     return (HTTP_ERROR);
1709   }
1710
1711  /*
1712   * If we haven't already returned, then there is nothing new...
1713   */
1714
1715   return (HTTP_CONTINUE);
1716 }
1717
1718
1719 /*
1720  * 'httpDecode64()' - Base64-decode a string.
1721  */
1722
1723 char *                                  /* O - Decoded string */
1724 httpDecode64(char       *out,           /* I - String to write to */
1725              const char *in)            /* I - String to read from */
1726 {
1727   int   outlen;                         /* Output buffer length */
1728
1729
1730  /*
1731   * Use the old maximum buffer size for binary compatibility...
1732   */
1733
1734   outlen = 512;
1735
1736   return (httpDecode64_2(out, &outlen, in));
1737 }
1738
1739
1740 /*
1741  * 'httpDecode64_2()' - Base64-decode a string.
1742  */
1743
1744 char *                                  /* O  - Decoded string */
1745 httpDecode64_2(char       *out,         /* I  - String to write to */
1746                int        *outlen,      /* IO - Size of output string */
1747                const char *in)          /* I  - String to read from */
1748 {
1749   int   pos,                            /* Bit position */
1750         base64;                         /* Value of this character */
1751   char  *outptr,                        /* Output pointer */
1752         *outend;                        /* End of output buffer */
1753
1754
1755  /*
1756   * Range check input...
1757   */
1758
1759   if (!out || !outlen || *outlen < 1 || !in || !*in)
1760     return (NULL);
1761
1762  /*
1763   * Convert from base-64 to bytes...
1764   */
1765
1766   for (outptr = out, outend = out + *outlen - 1, pos = 0; *in != '\0'; in ++)
1767   {
1768    /*
1769     * Decode this character into a number from 0 to 63...
1770     */
1771
1772     if (*in >= 'A' && *in <= 'Z')
1773       base64 = *in - 'A';
1774     else if (*in >= 'a' && *in <= 'z')
1775       base64 = *in - 'a' + 26;
1776     else if (*in >= '0' && *in <= '9')
1777       base64 = *in - '0' + 52;
1778     else if (*in == '+')
1779       base64 = 62;
1780     else if (*in == '/')
1781       base64 = 63;
1782     else if (*in == '=')
1783       break;
1784     else
1785       continue;
1786
1787    /*
1788     * Store the result in the appropriate chars...
1789     */
1790
1791     switch (pos)
1792     {
1793       case 0 :
1794           if (outptr < outend)
1795             *outptr = base64 << 2;
1796           pos ++;
1797           break;
1798       case 1 :
1799           if (outptr < outend)
1800             *outptr++ |= (base64 >> 4) & 3;
1801           if (outptr < outend)
1802             *outptr = (base64 << 4) & 255;
1803           pos ++;
1804           break;
1805       case 2 :
1806           if (outptr < outend)
1807             *outptr++ |= (base64 >> 2) & 15;
1808           if (outptr < outend)
1809             *outptr = (base64 << 6) & 255;
1810           pos ++;
1811           break;
1812       case 3 :
1813           if (outptr < outend)
1814             *outptr++ |= base64;
1815           pos = 0;
1816           break;
1817     }
1818   }
1819
1820   *outptr = '\0';
1821
1822  /*
1823   * Return the decoded string and size...
1824   */
1825
1826   *outlen = (int)(outptr - out);
1827
1828   return (out);
1829 }
1830
1831
1832 /*
1833  * 'httpEncode64()' - Base64-encode a string.
1834  */
1835
1836 char *                                  /* O - Encoded string */
1837 httpEncode64(char       *out,           /* I - String to write to */
1838              const char *in)            /* I - String to read from */
1839 {
1840   return (httpEncode64_2(out, 512, in, strlen(in)));
1841 }
1842
1843
1844 /*
1845  * 'httpEncode64_2()' - Base64-encode a string.
1846  */
1847
1848 char *                                  /* O - Encoded string */
1849 httpEncode64_2(char       *out,         /* I - String to write to */
1850                int        outlen,       /* I - Size of output string */
1851                const char *in,          /* I - String to read from */
1852                int        inlen)        /* I - Size of input string */
1853 {
1854   char          *outptr,                /* Output pointer */
1855                 *outend;                /* End of output buffer */
1856   static const char base64[] =          /* Base64 characters... */
1857                 {
1858                   "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1859                   "abcdefghijklmnopqrstuvwxyz"
1860                   "0123456789"
1861                   "+/"
1862                 };
1863
1864
1865  /*
1866   * Range check input...
1867   */
1868
1869   if (!out || outlen < 1 || !in || inlen < 1)
1870     return (NULL);
1871
1872  /*
1873   * Convert bytes to base-64...
1874   */
1875
1876   for (outptr = out, outend = out + outlen - 1; inlen > 0; in ++, inlen --)
1877   {
1878    /*
1879     * Encode the up to 3 characters as 4 Base64 numbers...
1880     */
1881
1882     if (outptr < outend)
1883       *outptr ++ = base64[(in[0] & 255) >> 2];
1884     if (outptr < outend)
1885       *outptr ++ = base64[(((in[0] & 255) << 4) | ((in[1] & 255) >> 4)) & 63];
1886
1887     in ++;
1888     inlen --;
1889     if (inlen <= 0)
1890     {
1891       if (outptr < outend)
1892         *outptr ++ = '=';
1893       if (outptr < outend)
1894         *outptr ++ = '=';
1895       break;
1896     }
1897
1898     if (outptr < outend)
1899       *outptr ++ = base64[(((in[0] & 255) << 2) | ((in[1] & 255) >> 6)) & 63];
1900
1901     in ++;
1902     inlen --;
1903     if (inlen <= 0)
1904     {
1905       if (outptr < outend)
1906         *outptr ++ = '=';
1907       break;
1908     }
1909
1910     if (outptr < outend)
1911       *outptr ++ = base64[in[0] & 63];
1912   }
1913
1914   *outptr = '\0';
1915
1916  /*
1917   * Return the encoded string...
1918   */
1919
1920   return (out);
1921 }
1922
1923
1924 /*
1925  * 'httpGetLength()' - Get the amount of data remaining from the
1926  *                     content-length or transfer-encoding fields.
1927  */
1928
1929 int                             /* O - Content length */
1930 httpGetLength(http_t *http)     /* I - HTTP data */
1931 {
1932   DEBUG_printf(("httpGetLength(http=%p), state=%d\n", http, http->state));
1933
1934   if (strcasecmp(http->fields[HTTP_FIELD_TRANSFER_ENCODING], "chunked") == 0)
1935   {
1936     DEBUG_puts("httpGetLength: chunked request!");
1937
1938     http->data_encoding  = HTTP_ENCODE_CHUNKED;
1939     http->data_remaining = 0;
1940   }
1941   else
1942   {
1943     http->data_encoding = HTTP_ENCODE_LENGTH;
1944
1945    /*
1946     * The following is a hack for HTTP servers that don't send a
1947     * content-length or transfer-encoding field...
1948     *
1949     * If there is no content-length then the connection must close
1950     * after the transfer is complete...
1951     */
1952
1953     if (http->fields[HTTP_FIELD_CONTENT_LENGTH][0] == '\0')
1954       http->data_remaining = 2147483647;
1955     else
1956       http->data_remaining = atoi(http->fields[HTTP_FIELD_CONTENT_LENGTH]);
1957
1958     DEBUG_printf(("httpGetLength: content_length=%d\n", http->data_remaining));
1959   }
1960
1961   return (http->data_remaining);
1962 }
1963
1964
1965 /*
1966  * 'http_field()' - Return the field index for a field name.
1967  */
1968
1969 static http_field_t             /* O - Field index */
1970 http_field(const char *name)    /* I - String name */
1971 {
1972   int   i;                      /* Looping var */
1973
1974
1975   for (i = 0; i < HTTP_FIELD_MAX; i ++)
1976     if (strcasecmp(name, http_fields[i]) == 0)
1977       return ((http_field_t)i);
1978
1979   return (HTTP_FIELD_UNKNOWN);
1980 }
1981
1982
1983 /*
1984  * 'http_send()' - Send a request with all fields and the trailing blank line.
1985  */
1986
1987 static int                      /* O - 0 on success, non-zero on error */
1988 http_send(http_t       *http,   /* I - HTTP data */
1989           http_state_t request, /* I - Request code */
1990           const char   *uri)    /* I - URI */
1991 {
1992   int           i;              /* Looping var */
1993   char          *ptr,           /* Pointer in buffer */
1994                 buf[1024];      /* Encoded URI buffer */
1995   static const char * const codes[] =
1996                 {               /* Request code strings */
1997                   NULL,
1998                   "OPTIONS",
1999                   "GET",
2000                   NULL,
2001                   "HEAD",
2002                   "POST",
2003                   NULL,
2004                   NULL,
2005                   "PUT",
2006                   NULL,
2007                   "DELETE",
2008                   "TRACE",
2009                   "CLOSE"
2010                 };
2011   static const char hex[] = "0123456789ABCDEF";
2012                                 /* Hex digits */
2013
2014
2015   DEBUG_printf(("http_send(http=%p, request=HTTP_%s, uri=\"%s\")\n",
2016                 http, codes[request], uri));
2017
2018   if (http == NULL || uri == NULL)
2019     return (-1);
2020
2021  /*
2022   * Encode the URI as needed...
2023   */
2024
2025   for (ptr = buf; *uri != '\0' && ptr < (buf + sizeof(buf) - 1); uri ++)
2026     if (*uri <= ' ' || *uri >= 127)
2027     {
2028       if (ptr < (buf + sizeof(buf) - 1))
2029         *ptr ++ = '%';
2030       if (ptr < (buf + sizeof(buf) - 1))
2031         *ptr ++ = hex[(*uri >> 4) & 15];
2032       if (ptr < (buf + sizeof(buf) - 1))
2033         *ptr ++ = hex[*uri & 15];
2034     }
2035     else
2036       *ptr ++ = *uri;
2037
2038   *ptr = '\0';
2039
2040  /*
2041   * See if we had an error the last time around; if so, reconnect...
2042   */
2043
2044   if (http->status == HTTP_ERROR || http->status >= HTTP_BAD_REQUEST)
2045     httpReconnect(http);
2046
2047  /*
2048   * Send the request header...
2049   */
2050
2051   http->state = request;
2052   if (request == HTTP_POST || request == HTTP_PUT)
2053     http->state ++;
2054
2055   http->status = HTTP_CONTINUE;
2056
2057 #ifdef HAVE_SSL
2058   if (http->encryption == HTTP_ENCRYPT_REQUIRED && !http->tls)
2059   {
2060     httpSetField(http, HTTP_FIELD_CONNECTION, "Upgrade");
2061     httpSetField(http, HTTP_FIELD_UPGRADE, "TLS/1.0,SSL/2.0,SSL/3.0");
2062   }
2063 #endif /* HAVE_SSL */
2064
2065   if (httpPrintf(http, "%s %s HTTP/1.1\r\n", codes[request], buf) < 1)
2066   {
2067     http->status = HTTP_ERROR;
2068     return (-1);
2069   }
2070
2071   for (i = 0; i < HTTP_FIELD_MAX; i ++)
2072     if (http->fields[i][0] != '\0')
2073     {
2074       DEBUG_printf(("%s: %s\n", http_fields[i], http->fields[i]));
2075
2076       if (httpPrintf(http, "%s: %s\r\n", http_fields[i], http->fields[i]) < 1)
2077       {
2078         http->status = HTTP_ERROR;
2079         return (-1);
2080       }
2081     }
2082
2083   if (httpPrintf(http, "\r\n") < 1)
2084   {
2085     http->status = HTTP_ERROR;
2086     return (-1);
2087   }
2088
2089   httpClearFields(http);
2090
2091   return (0);
2092 }
2093
2094
2095 /*
2096  * 'http_wait()' - Wait for data available on a connection.
2097  */
2098
2099 static int                              /* O - 1 if data is available, 0 otherwise */
2100 http_wait(http_t *http,                 /* I - HTTP data */
2101           int    msec)                  /* I - Milliseconds to wait */
2102 {
2103 #ifndef WIN32
2104   struct rlimit         limit;          /* Runtime limit */
2105 #endif /* !WIN32 */
2106   struct timeval        timeout;        /* Timeout */
2107   int                   nfds;           /* Result from select() */
2108   int                   set_size;       /* Size of select set */
2109
2110
2111   DEBUG_printf(("http_wait(http=%p, msec=%d)\n", http, msec));
2112
2113  /*
2114   * Check the SSL/TLS buffers for data first...
2115   */
2116
2117 #ifdef HAVE_SSL
2118   if (http->tls)
2119   {
2120 #  ifdef HAVE_LIBSSL
2121     if (SSL_pending((SSL *)(http->tls)))
2122       return (1);
2123 #  elif defined(HAVE_GNUTLS)
2124     if (gnutls_record_check_pending(((http_tls_t *)(http->tls))->session))
2125       return (1);
2126 #  elif defined(HAVE_CDSASSL)
2127     size_t bytes;                       /* Bytes that are available */
2128
2129     if (!SSLGetBufferedReadSize((SSLContextRef)http->tls, &bytes) && bytes > 0)
2130       return;
2131 #  endif /* HAVE_LIBSSL */
2132   }
2133 #endif /* HAVE_SSL */
2134
2135  /*
2136   * Then try doing a select() to poll the socket...
2137   */
2138
2139   if (!http->input_set)
2140   {
2141 #ifdef WIN32
2142    /*
2143     * Windows has a fixed-size select() structure, different (surprise,
2144     * surprise!) from all UNIX implementations.  Just allocate this
2145     * fixed structure...
2146     */
2147
2148     http->input_set = calloc(1, sizeof(fd_set));
2149 #else
2150    /*
2151     * Allocate the select() input set based upon the max number of file
2152     * descriptors available for this process...
2153     */
2154
2155     getrlimit(RLIMIT_NOFILE, &limit);
2156
2157     set_size = (limit.rlim_cur + 31) / 8 + 4;
2158     if (set_size < sizeof(fd_set))
2159       set_size = sizeof(fd_set);
2160
2161     http->input_set = calloc(1, set_size);
2162 #endif /* WIN32 */
2163
2164     if (!http->input_set)
2165       return (0);
2166   }
2167
2168   FD_SET(http->fd, http->input_set);
2169
2170   if (msec >= 0)
2171   {
2172     timeout.tv_sec  = msec / 1000;
2173     timeout.tv_usec = (msec % 1000) * 1000;
2174
2175     nfds = select(http->fd + 1, http->input_set, NULL, NULL, &timeout);
2176   }
2177   else
2178     nfds = select(http->fd + 1, http->input_set, NULL, NULL, NULL);
2179
2180   FD_CLR(http->fd, http->input_set);
2181
2182   return (nfds > 0);
2183 }
2184
2185
2186 #ifdef HAVE_SSL
2187 /*
2188  * 'http_upgrade()' - Force upgrade to TLS encryption.
2189  */
2190
2191 static int                      /* O - Status of connection */
2192 http_upgrade(http_t *http)      /* I - HTTP data */
2193 {
2194   int           ret;            /* Return value */
2195   http_t        myhttp;         /* Local copy of HTTP data */
2196
2197
2198   DEBUG_printf(("http_upgrade(%p)\n", http));
2199
2200  /*
2201   * Copy the HTTP data to a local variable so we can do the OPTIONS
2202   * request without interfering with the existing request data...
2203   */
2204
2205   memcpy(&myhttp, http, sizeof(myhttp));
2206
2207  /*
2208   * Send an OPTIONS request to the server, requiring SSL or TLS
2209   * encryption on the link...
2210   */
2211
2212   httpClearFields(&myhttp);
2213   httpSetField(&myhttp, HTTP_FIELD_CONNECTION, "upgrade");
2214   httpSetField(&myhttp, HTTP_FIELD_UPGRADE, "TLS/1.0, SSL/2.0, SSL/3.0");
2215
2216   if ((ret = httpOptions(&myhttp, "*")) == 0)
2217   {
2218    /*
2219     * Wait for the secure connection...
2220     */
2221
2222     while (httpUpdate(&myhttp) == HTTP_CONTINUE);
2223   }
2224
2225   httpFlush(&myhttp);
2226
2227  /*
2228   * Copy the HTTP data back over, if any...
2229   */
2230
2231   http->fd         = myhttp.fd;
2232   http->error      = myhttp.error;
2233   http->activity   = myhttp.activity;
2234   http->status     = myhttp.status;
2235   http->version    = myhttp.version;
2236   http->keep_alive = myhttp.keep_alive;
2237   http->used       = myhttp.used;
2238
2239   if (http->used)
2240     memcpy(http->buffer, myhttp.buffer, http->used);
2241
2242   http->auth_type   = myhttp.auth_type;
2243   http->nonce_count = myhttp.nonce_count;
2244
2245   memcpy(http->nonce, myhttp.nonce, sizeof(http->nonce));
2246
2247   http->tls        = myhttp.tls;
2248   http->encryption = myhttp.encryption;
2249
2250  /*
2251   * See if we actually went secure...
2252   */
2253
2254   if (!http->tls)
2255   {
2256    /*
2257     * Server does not support HTTP upgrade...
2258     */
2259
2260     DEBUG_puts("Server does not support HTTP upgrade!");
2261
2262 #  ifdef WIN32
2263     closesocket(http->fd);
2264 #  else
2265     close(http->fd);
2266 #  endif
2267
2268     http->fd = -1;
2269
2270     return (-1);
2271   }
2272   else
2273     return (ret);
2274 }
2275
2276
2277 /*
2278  * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
2279  */
2280
2281 static int                              /* O - Status of connection */
2282 http_setup_ssl(http_t *http)            /* I - HTTP data */
2283 {
2284 #  ifdef HAVE_LIBSSL
2285   SSL_CTX       *context;       /* Context for encryption */
2286   SSL           *conn;          /* Connection for encryption */
2287 #  elif defined(HAVE_GNUTLS)
2288   http_tls_t    *conn;          /* TLS session object */
2289   gnutls_certificate_client_credentials *credentials;
2290                                 /* TLS credentials */
2291 #  elif defined(HAVE_CDSASSL)
2292   SSLContextRef conn;           /* Context for encryption */
2293   OSStatus      error;          /* Error info */
2294 #  endif /* HAVE_LIBSSL */
2295
2296
2297   DEBUG_printf(("http_setup_ssl(http=%p)\n", http));
2298
2299 #  ifdef HAVE_LIBSSL
2300   context = SSL_CTX_new(SSLv23_client_method());
2301   conn    = SSL_new(context);
2302
2303   SSL_set_fd(conn, http->fd);
2304   if (SSL_connect(conn) != 1)
2305   {
2306 #    ifdef DEBUG
2307     unsigned long       error;  /* Error code */
2308
2309     while ((error = ERR_get_error()) != 0)
2310       printf("http_setup_ssl: %s\n", ERR_error_string(error, NULL));
2311 #    endif /* DEBUG */
2312
2313     SSL_CTX_free(context);
2314     SSL_free(conn);
2315
2316 #    ifdef WIN32
2317     http->error  = WSAGetLastError();
2318 #    else
2319     http->error  = errno;
2320 #    endif /* WIN32 */
2321     http->status = HTTP_ERROR;
2322
2323     return (HTTP_ERROR);
2324   }
2325
2326 #  elif defined(HAVE_GNUTLS)
2327   conn = (http_tls_t *)malloc(sizeof(http_tls_t));
2328
2329   if (conn == NULL)
2330   {
2331     http->error  = errno;
2332     http->status = HTTP_ERROR;
2333
2334     return (-1);
2335   }
2336
2337   credentials = (gnutls_certificate_client_credentials *)
2338                     malloc(sizeof(gnutls_certificate_client_credentials));
2339   if (credentials == NULL)
2340   {
2341     free(conn);
2342
2343     http->error = errno;
2344     http->status = HTTP_ERROR;
2345
2346     return (-1);
2347   }
2348
2349   gnutls_certificate_allocate_credentials(credentials);
2350
2351   gnutls_init(&(conn->session), GNUTLS_CLIENT);
2352   gnutls_set_default_priority(conn->session);
2353   gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, *credentials);
2354   gnutls_transport_set_ptr(conn->session, http->fd);
2355
2356   if ((gnutls_handshake(conn->session)) != GNUTLS_E_SUCCESS)
2357   {
2358     http->error  = errno;
2359     http->status = HTTP_ERROR;
2360
2361     return (-1);
2362   }
2363
2364   conn->credentials = credentials;
2365
2366 #  elif defined(HAVE_CDSASSL)
2367   error = SSLNewContext(false, &conn);
2368
2369   if (!error)
2370     error = SSLSetIOFuncs(conn, CDSAReadFunc, CDSAWriteFunc);
2371
2372   if (!error)
2373     error = SSLSetConnection(conn, (SSLConnectionRef)http->fd);
2374
2375   if (!error)
2376     error = SSLSetAllowsExpiredCerts(conn, true);
2377
2378   if (!error)
2379     error = SSLSetAllowsAnyRoot(conn, true);
2380
2381   if (!error)
2382     error = SSLHandshake(conn);
2383
2384   if (error != 0)
2385   {
2386     http->error  = error;
2387     http->status = HTTP_ERROR;
2388
2389     SSLDisposeContext(conn);
2390
2391     close(http->fd);
2392
2393     return (-1);
2394   }
2395 #  endif /* HAVE_CDSASSL */
2396
2397   http->tls = conn;
2398   return (0);
2399 }
2400
2401
2402 /*
2403  * 'http_shutdown_ssl()' - Shut down SSL/TLS on a connection.
2404  */
2405
2406 static void
2407 http_shutdown_ssl(http_t *http) /* I - HTTP data */
2408 {
2409 #  ifdef HAVE_LIBSSL
2410   SSL_CTX       *context;       /* Context for encryption */
2411   SSL           *conn;          /* Connection for encryption */
2412
2413
2414   conn    = (SSL *)(http->tls);
2415   context = SSL_get_SSL_CTX(conn);
2416
2417   SSL_shutdown(conn);
2418   SSL_CTX_free(context);
2419   SSL_free(conn);
2420
2421 #  elif defined(HAVE_GNUTLS)
2422   http_tls_t      *conn;        /* Encryption session */
2423   gnutls_certificate_client_credentials *credentials;
2424                                 /* TLS credentials */
2425
2426
2427   conn = (http_tls_t *)(http->tls);
2428   credentials = (gnutls_certificate_client_credentials *)(conn->credentials);
2429
2430   gnutls_bye(conn->session, GNUTLS_SHUT_RDWR);
2431   gnutls_deinit(conn->session);
2432   gnutls_certificate_free_credentials(*credentials);
2433   free(credentials);
2434   free(conn);
2435
2436 #  elif defined(HAVE_CDSASSL)
2437   SSLClose((SSLContextRef)http->tls);
2438   SSLDisposeContext((SSLContextRef)http->tls);
2439 #  endif /* HAVE_LIBSSL */
2440
2441   http->tls = NULL;
2442 }
2443
2444
2445 /*
2446  * 'http_read_ssl()' - Read from a SSL/TLS connection.
2447  */
2448
2449 static int                              /* O - Bytes read */
2450 http_read_ssl(http_t *http,             /* I - HTTP data */
2451               char   *buf,              /* I - Buffer to store data */
2452               int    len)               /* I - Length of buffer */
2453 {
2454 #  if defined(HAVE_LIBSSL)
2455   return (SSL_read((SSL *)(http->tls), buf, len));
2456
2457 #  elif defined(HAVE_GNUTLS)
2458   return (gnutls_record_recv(((http_tls_t *)(http->tls))->session, buf, len));
2459
2460 #  elif defined(HAVE_CDSASSL)
2461   OSStatus      error;                  /* Error info */
2462   size_t        processed;              /* Number of bytes processed */
2463
2464
2465   error = SSLRead((SSLContextRef)http->tls, buf, len, &processed);
2466
2467   if (error == 0)
2468     return (processed);
2469   else
2470   {
2471     http->error = error;
2472
2473     return (-1);
2474   }
2475 #  endif /* HAVE_LIBSSL */
2476 }
2477
2478
2479 /*
2480  * 'http_write_ssl()' - Write to a SSL/TLS connection.
2481  */
2482
2483 static int                              /* O - Bytes written */
2484 http_write_ssl(http_t     *http,        /* I - HTTP data */
2485                const char *buf,         /* I - Buffer holding data */
2486                int        len)          /* I - Length of buffer */
2487 {
2488 #  if defined(HAVE_LIBSSL)
2489   return (SSL_write((SSL *)(http->tls), buf, len));
2490
2491 #  elif defined(HAVE_GNUTLS)
2492   return (gnutls_record_send(((http_tls_t *)(http->tls))->session, buf, len));
2493 #  elif defined(HAVE_CDSASSL)
2494   OSStatus      error;                  /* Error info */
2495   size_t        processed;              /* Number of bytes processed */
2496
2497
2498   error = SSLWrite((SSLContextRef)http->tls, buf, len, &processed);
2499
2500   if (error == 0)
2501     return (processed);
2502   else
2503   {
2504     http->error = error;
2505     return (-1);
2506   }
2507 #  endif /* HAVE_LIBSSL */
2508 }
2509
2510
2511 #  if defined(HAVE_CDSASSL)
2512 /*
2513  * 'CDSAReadFunc()' - Read function for CDSA decryption code.
2514  */
2515
2516 static OSStatus                                 /* O  - -1 on error, 0 on success */
2517 CDSAReadFunc(SSLConnectionRef connection,       /* I  - SSL/TLS connection */
2518              void             *data,            /* I  - Data buffer */
2519              size_t           *dataLength)      /* IO - Number of bytes */
2520 {
2521   ssize_t       bytes;                          /* Number of bytes read */
2522
2523
2524   bytes = recv((int)connection, data, *dataLength, 0);
2525   if (bytes >= 0)
2526   {
2527     *dataLength = bytes;
2528     return (0);
2529   }
2530   else
2531     return (-1);
2532 }
2533
2534
2535 /*
2536  * 'CDSAWriteFunc()' - Write function for CDSA encryption code.
2537  */
2538
2539 static OSStatus                                 /* O  - -1 on error, 0 on success */
2540 CDSAWriteFunc(SSLConnectionRef connection,      /* I  - SSL/TLS connection */
2541               const void       *data,           /* I  - Data buffer */
2542               size_t           *dataLength)     /* IO - Number of bytes */
2543 {
2544   ssize_t bytes;
2545
2546
2547   bytes = write((int)connection, data, *dataLength);
2548   if (bytes >= 0)
2549   {
2550     *dataLength = bytes;
2551     return (0);
2552   }
2553   else
2554     return (-1);
2555 }
2556 #  endif /* HAVE_CDSASSL */
2557 #endif /* HAVE_SSL */
2558
2559
2560 /*
2561  * End of "$Id: http.c,v 1.82.2.56 2004/08/18 17:49:19 mike Exp $".
2562  */