cups/http.h

   1 /*
   2  * "$Id: http.h 11173 2013-07-23 12:31:34Z msweet $"
   3  *
   4  *   Hyper-Text Transport Protocol definitions for CUPS.
   5  *
   6  *   Copyright 2007-2012 by Apple Inc.
   7  *   Copyright 1997-2007 by Easy Software Products, all rights reserved.
   8  *
   9  *   These coded instructions, statements, and computer programs are the
  10  *   property of Apple Inc. and are protected by Federal copyright
  11  *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  12  *   which should have been included with this file.  If this file is
  13  *   file is missing or damaged, see the license at "http://www.cups.org/".
  14  *
  15  *   This file is subject to the Apple OS-Developed Software exception.
  16  */
  17
  18 #ifndef _CUPS_HTTP_H_
  19 #  define _CUPS_HTTP_H_
  20
  21 /*
  22  * Include necessary headers...
  23  */
  24
  25 #  include "versioning.h"
  26 #  include "array.h"
  27 #  include <string.h>
  28 #  include <time.h>
  29 #  include <sys/types.h>
  30 #  ifdef WIN32
  31 #    ifndef __CUPS_SSIZE_T_DEFINED
  32 #      define __CUPS_SSIZE_T_DEFINED
  33 /* Windows does not support the ssize_t type, so map it to off_t... */
  34 typedef off_t ssize_t;                  /* @private@ */
  35 #    endif /* !__CUPS_SSIZE_T_DEFINED */
  36 #    include <winsock2.h>
  37 #    include <ws2tcpip.h>
  38 #  else
  39 #    ifdef __sgi
  40 #      define INET6                     /* IRIX IPv6 support... */
  41 #    endif /* __sgi */
  42 #    include <unistd.h>
  43 #    include <sys/time.h>
  44 #    include <sys/socket.h>
  45 #    include <netdb.h>
  46 #    include <netinet/in.h>
  47 #    include <arpa/inet.h>
  48 #    include <netinet/in_systm.h>
  49 #    include <netinet/ip.h>
  50 #    if !defined(__APPLE__) || !defined(TCP_NODELAY)
  51 #      include <netinet/tcp.h>
  52 #    endif /* !__APPLE__ || !TCP_NODELAY */
  53 #    if defined(AF_UNIX) && !defined(AF_LOCAL)
  54 #      define AF_LOCAL AF_UNIX          /* Older UNIX's have old names... */
  55 #    endif /* AF_UNIX && !AF_LOCAL */
  56 #    ifdef AF_LOCAL
  57 #      include <sys/un.h>
  58 #    endif /* AF_LOCAL */
  59 #    if defined(LOCAL_PEERCRED) && !defined(SO_PEERCRED)
  60 #      define SO_PEERCRED LOCAL_PEERCRED
  61 #    endif /* LOCAL_PEERCRED && !SO_PEERCRED */
  62 #  endif /* WIN32 */
  63
  64
  65 /*
  66  * C++ magic...
  67  */
  68
  69 #  ifdef __cplusplus
  70 extern "C" {
  71 #  endif /* __cplusplus */
  72
  73
  74 /*
  75  * Oh, the wonderful world of IPv6 compatibility.  Apparently some
  76  * implementations expose the (more logical) 32-bit address parts
  77  * to everyone, while others only expose it to kernel code...  To
  78  * make supporting IPv6 even easier, each vendor chose different
  79  * core structure and union names, so the same defines or code
  80  * can't be used on all platforms.
  81  *
  82  * The following will likely need tweaking on new platforms that
  83  * support IPv6 - the "s6_addr32" define maps to the 32-bit integer
  84  * array in the in6_addr union, which is named differently on various
  85  * platforms.
  86  */
  87
  88 #if defined(AF_INET6) && !defined(s6_addr32)
  89 #  if defined(__sun)
  90 #    define s6_addr32   _S6_un._S6_u32
  91 #  elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)|| defined(__DragonFly__)
  92 #    define s6_addr32   __u6_addr.__u6_addr32
  93 #  elif defined(__osf__)
  94 #    define s6_addr32   s6_un.sa6_laddr
  95 #  elif defined(WIN32)
  96 /*
  97  * Windows only defines byte and 16-bit word members of the union and
  98  * requires special casing of all raw address code...
  99  */
 100 #    define s6_addr32   error_need_win32_specific_code
 101 #  endif /* __sun */
 102 #endif /* AF_INET6 && !s6_addr32 */
 103
 104
 105 /*
 106  * Limits...
 107  */
 108
 109 #  define HTTP_MAX_URI          1024    /* Max length of URI string */
 110 #  define HTTP_MAX_HOST         256     /* Max length of hostname string */
 111 #  define HTTP_MAX_BUFFER       2048    /* Max length of data buffer */
 112 #  define HTTP_MAX_VALUE        256     /* Max header field value length */
 113
 114
 115 /*
 116  * Types and structures...
 117  */
 118
 119 typedef enum http_auth_e                /**** HTTP authentication types ****/
 120 {
 121   HTTP_AUTH_NONE,                       /* No authentication in use */
 122   HTTP_AUTH_BASIC,                      /* Basic authentication in use */
 123   HTTP_AUTH_MD5,                        /* Digest authentication in use */
 124   HTTP_AUTH_MD5_SESS,                   /* MD5-session authentication in use */
 125   HTTP_AUTH_MD5_INT,                    /* Digest authentication in use for body */
 126   HTTP_AUTH_MD5_SESS_INT,               /* MD5-session authentication in use for body */
 127   HTTP_AUTH_NEGOTIATE                   /* GSSAPI authentication in use @since CUPS 1.3/OS X 10.5@ */
 128 } http_auth_t;
 129
 130 typedef enum http_encoding_e            /**** HTTP transfer encoding values ****/
 131 {
 132   HTTP_ENCODE_LENGTH,                   /* Data is sent with Content-Length */
 133   HTTP_ENCODE_CHUNKED,                  /* Data is chunked */
 134   HTTP_ENCODE_FIELDS                    /* Sending HTTP fields */
 135 } http_encoding_t;
 136
 137 typedef enum http_encryption_e          /**** HTTP encryption values ****/
 138 {
 139   HTTP_ENCRYPT_IF_REQUESTED,            /* Encrypt if requested (TLS upgrade) */
 140   HTTP_ENCRYPT_NEVER,                   /* Never encrypt */
 141   HTTP_ENCRYPT_REQUIRED,                /* Encryption is required (TLS upgrade) */
 142   HTTP_ENCRYPT_ALWAYS                   /* Always encrypt (SSL) */
 143 } http_encryption_t;
 144
 145 typedef enum http_field_e               /**** HTTP field names ****/
 146 {
 147   HTTP_FIELD_UNKNOWN = -1,              /* Unknown field */
 148   HTTP_FIELD_ACCEPT_LANGUAGE,           /* Accept-Language field */
 149   HTTP_FIELD_ACCEPT_RANGES,             /* Accept-Ranges field */
 150   HTTP_FIELD_AUTHORIZATION,             /* Authorization field */
 151   HTTP_FIELD_CONNECTION,                /* Connection field */
 152   HTTP_FIELD_CONTENT_ENCODING,          /* Content-Encoding field */
 153   HTTP_FIELD_CONTENT_LANGUAGE,          /* Content-Language field */
 154   HTTP_FIELD_CONTENT_LENGTH,            /* Content-Length field */
 155   HTTP_FIELD_CONTENT_LOCATION,          /* Content-Location field */
 156   HTTP_FIELD_CONTENT_MD5,               /* Content-MD5 field */
 157   HTTP_FIELD_CONTENT_RANGE,             /* Content-Range field */
 158   HTTP_FIELD_CONTENT_TYPE,              /* Content-Type field */
 159   HTTP_FIELD_CONTENT_VERSION,           /* Content-Version field */
 160   HTTP_FIELD_DATE,                      /* Date field */
 161   HTTP_FIELD_HOST,                      /* Host field */
 162   HTTP_FIELD_IF_MODIFIED_SINCE,         /* If-Modified-Since field */
 163   HTTP_FIELD_IF_UNMODIFIED_SINCE,       /* If-Unmodified-Since field */
 164   HTTP_FIELD_KEEP_ALIVE,                /* Keep-Alive field */
 165   HTTP_FIELD_LAST_MODIFIED,             /* Last-Modified field */
 166   HTTP_FIELD_LINK,                      /* Link field */
 167   HTTP_FIELD_LOCATION,                  /* Location field */
 168   HTTP_FIELD_RANGE,                     /* Range field */
 169   HTTP_FIELD_REFERER,                   /* Referer field */
 170   HTTP_FIELD_RETRY_AFTER,               /* Retry-After field */
 171   HTTP_FIELD_TRANSFER_ENCODING,         /* Transfer-Encoding field */
 172   HTTP_FIELD_UPGRADE,                   /* Upgrade field */
 173   HTTP_FIELD_USER_AGENT,                /* User-Agent field */
 174   HTTP_FIELD_WWW_AUTHENTICATE,          /* WWW-Authenticate field */
 175   HTTP_FIELD_MAX                        /* Maximum field index */
 176 } http_field_t;
 177
 178 typedef enum http_keepalive_e           /**** HTTP keep-alive values ****/
 179 {
 180   HTTP_KEEPALIVE_OFF = 0,               /* No keep alive support */
 181   HTTP_KEEPALIVE_ON                     /* Use keep alive */
 182 } http_keepalive_t;
 183
 184 typedef enum http_state_e               /**** HTTP state values; states
 185                                          **** are server-oriented...
 186                                          ****/
 187 {
 188   HTTP_WAITING,                         /* Waiting for command */
 189   HTTP_OPTIONS,                         /* OPTIONS command, waiting for blank line */
 190   HTTP_GET,                             /* GET command, waiting for blank line */
 191   HTTP_GET_SEND,                        /* GET command, sending data */
 192   HTTP_HEAD,                            /* HEAD command, waiting for blank line */
 193   HTTP_POST,                            /* POST command, waiting for blank line */
 194   HTTP_POST_RECV,                       /* POST command, receiving data */
 195   HTTP_POST_SEND,                       /* POST command, sending data */
 196   HTTP_PUT,                             /* PUT command, waiting for blank line */
 197   HTTP_PUT_RECV,                        /* PUT command, receiving data */
 198   HTTP_DELETE,                          /* DELETE command, waiting for blank line */
 199   HTTP_TRACE,                           /* TRACE command, waiting for blank line */
 200   HTTP_CLOSE,                           /* CLOSE command, waiting for blank line */
 201   HTTP_STATUS                           /* Command complete, sending status */
 202 } http_state_t;
 203
 204 typedef enum http_status_e              /**** HTTP status codes ****/
 205 {
 206   HTTP_ERROR = -1,                      /* An error response from httpXxxx() */
 207
 208   HTTP_CONTINUE = 100,                  /* Everything OK, keep going... */
 209   HTTP_SWITCHING_PROTOCOLS,             /* HTTP upgrade to TLS/SSL */
 210
 211   HTTP_OK = 200,                        /* OPTIONS/GET/HEAD/POST/TRACE command was successful */
 212   HTTP_CREATED,                         /* PUT command was successful */
 213   HTTP_ACCEPTED,                        /* DELETE command was successful */
 214   HTTP_NOT_AUTHORITATIVE,               /* Information isn't authoritative */
 215   HTTP_NO_CONTENT,                      /* Successful command, no new data */
 216   HTTP_RESET_CONTENT,                   /* Content was reset/recreated */
 217   HTTP_PARTIAL_CONTENT,                 /* Only a partial file was recieved/sent */
 218
 219   HTTP_MULTIPLE_CHOICES = 300,          /* Multiple files match request */
 220   HTTP_MOVED_PERMANENTLY,               /* Document has moved permanently */
 221   HTTP_MOVED_TEMPORARILY,               /* Document has moved temporarily */
 222   HTTP_SEE_OTHER,                       /* See this other link... */
 223   HTTP_NOT_MODIFIED,                    /* File not modified */
 224   HTTP_USE_PROXY,                       /* Must use a proxy to access this URI */
 225
 226   HTTP_BAD_REQUEST = 400,               /* Bad request */
 227   HTTP_UNAUTHORIZED,                    /* Unauthorized to access host */
 228   HTTP_PAYMENT_REQUIRED,                /* Payment required */
 229   HTTP_FORBIDDEN,                       /* Forbidden to access this URI */
 230   HTTP_NOT_FOUND,                       /* URI was not found */
 231   HTTP_METHOD_NOT_ALLOWED,              /* Method is not allowed */
 232   HTTP_NOT_ACCEPTABLE,                  /* Not Acceptable */
 233   HTTP_PROXY_AUTHENTICATION,            /* Proxy Authentication is Required */
 234   HTTP_REQUEST_TIMEOUT,                 /* Request timed out */
 235   HTTP_CONFLICT,                        /* Request is self-conflicting */
 236   HTTP_GONE,                            /* Server has gone away */
 237   HTTP_LENGTH_REQUIRED,                 /* A content length or encoding is required */
 238   HTTP_PRECONDITION,                    /* Precondition failed */
 239   HTTP_REQUEST_TOO_LARGE,               /* Request entity too large */
 240   HTTP_URI_TOO_LONG,                    /* URI too long */
 241   HTTP_UNSUPPORTED_MEDIATYPE,           /* The requested media type is unsupported */
 242   HTTP_REQUESTED_RANGE,                 /* The requested range is not satisfiable */
 243   HTTP_EXPECTATION_FAILED,              /* The expectation given in an Expect header field was not met */
 244   HTTP_UPGRADE_REQUIRED = 426,          /* Upgrade to SSL/TLS required */
 245
 246   HTTP_SERVER_ERROR = 500,              /* Internal server error */
 247   HTTP_NOT_IMPLEMENTED,                 /* Feature not implemented */
 248   HTTP_BAD_GATEWAY,                     /* Bad gateway */
 249   HTTP_SERVICE_UNAVAILABLE,             /* Service is unavailable */
 250   HTTP_GATEWAY_TIMEOUT,                 /* Gateway connection timed out */
 251   HTTP_NOT_SUPPORTED,                   /* HTTP version not supported */
 252
 253   HTTP_AUTHORIZATION_CANCELED = 1000,   /* User canceled authorization @since CUPS 1.4@ */
 254   HTTP_PKI_ERROR,                       /* Error negotiating a secure connection @since CUPS 1.5/OS X 10.7@ */
 255   HTTP_WEBIF_DISABLED                   /* Web interface is disabled @private@ */
 256 } http_status_t;
 257
 258 typedef enum http_uri_status_e          /**** URI separation status @since CUPS 1.2@ ****/
 259 {
 260   HTTP_URI_OVERFLOW = -8,               /* URI buffer for httpAssembleURI is too small */
 261   HTTP_URI_BAD_ARGUMENTS = -7,          /* Bad arguments to function (error) */
 262   HTTP_URI_BAD_RESOURCE = -6,           /* Bad resource in URI (error) */
 263   HTTP_URI_BAD_PORT = -5,               /* Bad port number in URI (error) */
 264   HTTP_URI_BAD_HOSTNAME = -4,           /* Bad hostname in URI (error) */
 265   HTTP_URI_BAD_USERNAME = -3,           /* Bad username in URI (error) */
 266   HTTP_URI_BAD_SCHEME = -2,             /* Bad scheme in URI (error) */
 267   HTTP_URI_BAD_URI = -1,                /* Bad/empty URI (error) */
 268   HTTP_URI_OK = 0,                      /* URI decoded OK */
 269   HTTP_URI_MISSING_SCHEME,              /* Missing scheme in URI (warning) */
 270   HTTP_URI_UNKNOWN_SCHEME,              /* Unknown scheme in URI (warning) */
 271   HTTP_URI_MISSING_RESOURCE             /* Missing resource in URI (warning) */
 272 } http_uri_status_t;
 273
 274 typedef enum http_uri_coding_e          /**** URI en/decode flags ****/
 275 {
 276   HTTP_URI_CODING_NONE = 0,             /* Don't en/decode anything */
 277   HTTP_URI_CODING_USERNAME = 1,         /* En/decode the username portion */
 278   HTTP_URI_CODING_HOSTNAME = 2,         /* En/decode the hostname portion */
 279   HTTP_URI_CODING_RESOURCE = 4,         /* En/decode the resource portion */
 280   HTTP_URI_CODING_MOST = 7,             /* En/decode all but the query */
 281   HTTP_URI_CODING_QUERY = 8,            /* En/decode the query portion */
 282   HTTP_URI_CODING_ALL = 15,             /* En/decode everything */
 283   HTTP_URI_CODING_RFC6874 = 16          /* Use RFC 6874 address format */
 284 } http_uri_coding_t;
 285
 286 typedef enum http_version_e             /**** HTTP version numbers ****/
 287 {
 288   HTTP_0_9 = 9,                         /* HTTP/0.9 */
 289   HTTP_1_0 = 100,                       /* HTTP/1.0 */
 290   HTTP_1_1 = 101                        /* HTTP/1.1 */
 291 } http_version_t;
 292
 293 typedef union _http_addr_u              /**** Socket address union, which
 294                                          **** makes using IPv6 and other
 295                                          **** address types easier and
 296                                          **** more portable. @since CUPS 1.2/OS X 10.5@
 297                                          ****/
 298 {
 299   struct sockaddr       addr;           /* Base structure for family value */
 300   struct sockaddr_in    ipv4;           /* IPv4 address */
 301 #ifdef AF_INET6
 302   struct sockaddr_in6   ipv6;           /* IPv6 address */
 303 #endif /* AF_INET6 */
 304 #ifdef AF_LOCAL
 305   struct sockaddr_un    un;             /* Domain socket file */
 306 #endif /* AF_LOCAL */
 307   char                  pad[256];       /* Padding to ensure binary compatibility */
 308 } http_addr_t;
 309
 310 typedef struct http_addrlist_s          /**** Socket address list, which is
 311                                          **** used to enumerate all of the
 312                                          **** addresses that are associated
 313                                          **** with a hostname. @since CUPS 1.2/OS X 10.5@
 314                                          ****/
 315 {
 316   struct http_addrlist_s *next;         /* Pointer to next address in list */
 317   http_addr_t           addr;           /* Address */
 318 } http_addrlist_t;
 319
 320 typedef struct _http_s http_t;          /**** HTTP connection type ****/
 321
 322 typedef struct http_credential_s        /**** HTTP credential data @since CUPS 1.5/OS X 10.7@ ****/
 323 {
 324   void          *data;                  /* Pointer to credential data */
 325   size_t        datalen;                /* Credential length */
 326 } http_credential_t;
 327
 328 typedef int (*http_timeout_cb_t)(http_t *http, void *user_data);
 329                                         /**** HTTP timeout callback @since CUPS 1.5/OS X 10.7@ ****/
 330
 331
 332
 333 /*
 334  * Prototypes...
 335  */
 336
 337 extern void             httpBlocking(http_t *http, int b);
 338 extern int              httpCheck(http_t *http);
 339 extern void             httpClearFields(http_t *http);
 340 extern void             httpClose(http_t *http);
 341 extern http_t           *httpConnect(const char *host, int port);
 342 extern http_t           *httpConnectEncrypt(const char *host, int port,
 343                                             http_encryption_t encryption);
 344 extern int              httpDelete(http_t *http, const char *uri);
 345 extern int              httpEncryption(http_t *http, http_encryption_t e);
 346 extern int              httpError(http_t *http);
 347 extern void             httpFlush(http_t *http);
 348 extern int              httpGet(http_t *http, const char *uri);
 349 extern char             *httpGets(char *line, int length, http_t *http);
 350 extern const char       *httpGetDateString(time_t t);
 351 extern time_t           httpGetDateTime(const char *s);
 352 extern const char       *httpGetField(http_t *http, http_field_t field);
 353 extern struct hostent   *httpGetHostByName(const char *name);
 354 extern char             *httpGetSubField(http_t *http, http_field_t field,
 355                                          const char *name, char *value);
 356 extern int              httpHead(http_t *http, const char *uri);
 357 extern void             httpInitialize(void);
 358 extern int              httpOptions(http_t *http, const char *uri);
 359 extern int              httpPost(http_t *http, const char *uri);
 360 extern int              httpPrintf(http_t *http, const char *format, ...)
 361                         __attribute__ ((__format__ (__printf__, 2, 3)));
 362 extern int              httpPut(http_t *http, const char *uri);
 363 extern int              httpRead(http_t *http, char *buffer, int length) _CUPS_DEPRECATED;
 364 extern int              httpReconnect(http_t *http);
 365 extern void             httpSeparate(const char *uri, char *method,
 366                                      char *username, char *host, int *port,
 367                                      char *resource) _CUPS_DEPRECATED;
 368 extern void             httpSetField(http_t *http, http_field_t field,
 369                                      const char *value);
 370 extern const char       *httpStatus(http_status_t status);
 371 extern int              httpTrace(http_t *http, const char *uri);
 372 extern http_status_t    httpUpdate(http_t *http);
 373 extern int              httpWrite(http_t *http, const char *buffer, int length) _CUPS_DEPRECATED;
 374 extern char             *httpEncode64(char *out, const char *in) _CUPS_DEPRECATED;
 375 extern char             *httpDecode64(char *out, const char *in) _CUPS_DEPRECATED;
 376 extern int              httpGetLength(http_t *http) _CUPS_DEPRECATED;
 377 extern char             *httpMD5(const char *, const char *, const char *,
 378                                  char [33]);
 379 extern char             *httpMD5Final(const char *, const char *, const char *,
 380                                       char [33]);
 381 extern char             *httpMD5String(const unsigned char *, char [33]);
 382
 383 /**** New in CUPS 1.1.19 ****/
 384 extern void             httpClearCookie(http_t *http) _CUPS_API_1_1_19;
 385 extern const char       *httpGetCookie(http_t *http) _CUPS_API_1_1_19;
 386 extern void             httpSetCookie(http_t *http, const char *cookie) _CUPS_API_1_1_19;
 387 extern int              httpWait(http_t *http, int msec) _CUPS_API_1_1_19;
 388
 389 /**** New in CUPS 1.1.21 ****/
 390 extern char             *httpDecode64_2(char *out, int *outlen, const char *in) _CUPS_API_1_1_21;
 391 extern char             *httpEncode64_2(char *out, int outlen, const char *in,
 392                                         int inlen) _CUPS_API_1_1_21;
 393 extern void             httpSeparate2(const char *uri,
 394                                       char *method, int methodlen,
 395                                       char *username, int usernamelen,
 396                                       char *host, int hostlen, int *port,
 397                                       char *resource, int resourcelen) _CUPS_DEPRECATED;
 398
 399 /**** New in CUPS 1.2/OS X 10.5 ****/
 400 extern int              httpAddrAny(const http_addr_t *addr) _CUPS_API_1_2;
 401 extern http_addrlist_t  *httpAddrConnect(http_addrlist_t *addrlist, int *sock) _CUPS_API_1_2;
 402 extern int              httpAddrEqual(const http_addr_t *addr1,
 403                                       const http_addr_t *addr2) _CUPS_API_1_2;
 404 extern void             httpAddrFreeList(http_addrlist_t *addrlist) _CUPS_API_1_2;
 405 extern http_addrlist_t  *httpAddrGetList(const char *hostname, int family,
 406                                          const char *service) _CUPS_API_1_2;
 407 extern int              httpAddrLength(const http_addr_t *addr) _CUPS_API_1_2;
 408 extern int              httpAddrLocalhost(const http_addr_t *addr) _CUPS_API_1_2;
 409 extern char             *httpAddrLookup(const http_addr_t *addr,
 410                                         char *name, int namelen) _CUPS_API_1_2;
 411 extern char             *httpAddrString(const http_addr_t *addr,
 412                                         char *s, int slen) _CUPS_API_1_2;
 413 extern http_uri_status_t httpAssembleURI(http_uri_coding_t encoding,
 414                                          char *uri, int urilen,
 415                                          const char *scheme,
 416                                          const char *username,
 417                                          const char *host, int port,
 418                                          const char *resource) _CUPS_API_1_2;
 419 extern http_uri_status_t httpAssembleURIf(http_uri_coding_t encoding,
 420                                           char *uri, int urilen,
 421                                           const char *scheme,
 422                                           const char *username,
 423                                           const char *host, int port,
 424                                           const char *resourcef, ...) _CUPS_API_1_2;
 425 extern int              httpFlushWrite(http_t *http) _CUPS_API_1_2;
 426 extern int              httpGetBlocking(http_t *http) _CUPS_API_1_2;
 427 extern const char       *httpGetDateString2(time_t t, char *s, int slen) _CUPS_API_1_2;
 428 extern int              httpGetFd(http_t *http) _CUPS_API_1_2;
 429 extern const char       *httpGetHostname(http_t *http, char *s, int slen) _CUPS_API_1_2;
 430 extern off_t            httpGetLength2(http_t *http) _CUPS_API_1_2;
 431 extern http_status_t    httpGetStatus(http_t *http) _CUPS_API_1_2;
 432 extern char             *httpGetSubField2(http_t *http, http_field_t field,
 433                                           const char *name, char *value,
 434                                           int valuelen) _CUPS_API_1_2;
 435 extern ssize_t          httpRead2(http_t *http, char *buffer, size_t length) _CUPS_API_1_2;
 436 extern http_uri_status_t httpSeparateURI(http_uri_coding_t decoding,
 437                                          const char *uri,
 438                                          char *scheme, int schemelen,
 439                                          char *username, int usernamelen,
 440                                          char *host, int hostlen, int *port,
 441                                          char *resource, int resourcelen) _CUPS_API_1_2;
 442 extern void             httpSetExpect(http_t *http, http_status_t expect) _CUPS_API_1_2;
 443 extern void             httpSetLength(http_t *http, size_t length) _CUPS_API_1_2;
 444 extern ssize_t          httpWrite2(http_t *http, const char *buffer,
 445                                    size_t length) _CUPS_API_1_2;
 446
 447 /**** New in CUPS 1.3/OS X 10.5 ****/
 448 extern char             *httpGetAuthString(http_t *http) _CUPS_API_1_3;
 449 extern void             httpSetAuthString(http_t *http, const char *scheme,
 450                                           const char *data) _CUPS_API_1_3;
 451
 452 /**** New in CUPS 1.5/OS X 10.7 ****/
 453 extern int              httpAddCredential(cups_array_t *credentials,
 454                                           const void *data, size_t datalen)
 455                                           _CUPS_API_1_5;
 456 extern int              httpCopyCredentials(http_t *http,
 457                                             cups_array_t **credentials)
 458                                             _CUPS_API_1_5;
 459 extern void             httpFreeCredentials(cups_array_t *certs) _CUPS_API_1_5;
 460 extern int              httpSetCredentials(http_t *http, cups_array_t *certs)
 461                                            _CUPS_API_1_5;
 462 extern void             httpSetTimeout(http_t *http, double timeout,
 463                                        http_timeout_cb_t cb, void *user_data)
 464                                        _CUPS_API_1_5;
 465
 466 /**** New in CUPS 1.6/OS X 10.8 ****/
 467 extern http_addrlist_t  *httpAddrConnect2(http_addrlist_t *addrlist, int *sock,
 468                                           int msec, int *cancel)
 469                                           _CUPS_API_1_6;
 470 extern http_state_t     httpGetState(http_t *http) _CUPS_API_1_6;
 471 extern http_version_t   httpGetVersion(http_t *http) _CUPS_API_1_6;
 472 extern int              httpReconnect2(http_t *http, int msec, int *cancel)
 473                                        _CUPS_API_1_6;
 474
 475
 476 /*
 477  * C++ magic...
 478  */
 479
 480 #  ifdef __cplusplus
 481 }
 482 #  endif /* __cplusplus */
 483 #endif /* !_CUPS_HTTP_H_ */
 484
 485 /*
 486  * End of "$Id: http.h 11173 2013-07-23 12:31:34Z msweet $".
 487  */