2 * "$Id: http.h 6649 2007-07-11 21:46:42Z mike $"
4 * Hyper-Text Transport Protocol definitions for the Common UNIX Printing
7 * Copyright 2007 by Apple Inc.
8 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
10 * These coded instructions, statements, and computer programs are the
11 * property of Apple Inc. and are protected by Federal copyright
12 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
13 * which should have been included with this file. If this file is
14 * file is missing or damaged, see the license at "http://www.cups.org/".
16 * This file is subject to the Apple OS-Developed Software exception.
20 # define _CUPS_HTTP_H_
23 * Include necessary headers...
28 # include <sys/types.h>
30 # ifndef __CUPS_SSIZE_T_DEFINED
31 # define __CUPS_SSIZE_T_DEFINED
32 /* Windows does not support the ssize_t type, so map it to off_t... */
33 typedef off_t ssize_t
; /* @private@ */
34 # endif /* !__CUPS_SSIZE_T_DEFINED */
35 # include <winsock2.h>
36 # include <ws2tcpip.h>
39 # define INET6 /* IRIX IPv6 support... */
42 # include <sys/time.h>
43 # include <sys/socket.h>
45 # include <netinet/in.h>
46 # include <arpa/inet.h>
47 # include <netinet/in_systm.h>
48 # include <netinet/ip.h>
49 # if !defined(__APPLE__) || !defined(TCP_NODELAY)
50 # include <netinet/tcp.h>
51 # endif /* !__APPLE__ || !TCP_NODELAY */
52 # if defined(AF_UNIX) && !defined(AF_LOCAL)
53 # define AF_LOCAL AF_UNIX /* Older UNIX's have old names... */
54 # endif /* AF_UNIX && !AF_LOCAL */
57 # endif /* AF_LOCAL */
58 # if defined(LOCAL_PEERCRED) && !defined(SO_PEERCRED)
59 # define SO_PEERCRED LOCAL_PEERCRED
60 # endif /* LOCAL_PEERCRED && !SO_PEERCRED */
64 * With GCC 3.0 and higher, we can mark old APIs "deprecated" so you get
65 * a warning at compile-time.
68 # if defined(__GNUC__) && __GNUC__ > 2
69 # define _HTTP_DEPRECATED __attribute__ ((__deprecated__))
71 # define _HTTP_DEPRECATED
72 # endif /* __GNUC__ && __GNUC__ > 2 */
81 # endif /* __cplusplus */
85 * Oh, the wonderful world of IPv6 compatibility. Apparently some
86 * implementations expose the (more logical) 32-bit address parts
87 * to everyone, while others only expose it to kernel code... To
88 * make supporting IPv6 even easier, each vendor chose different
89 * core structure and union names, so the same defines or code
90 * can't be used on all platforms.
92 * The following will likely need tweaking on new platforms that
93 * support IPv6 - the "s6_addr32" define maps to the 32-bit integer
94 * array in the in6_addr union, which is named differently on various
98 #if defined(AF_INET6) && !defined(s6_addr32)
100 # define s6_addr32 _S6_un._S6_u32
101 # elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
102 # define s6_addr32 __u6_addr.__u6_addr32
103 # elif defined(__osf__)
104 # define s6_addr32 s6_un.sa6_laddr
105 # elif defined(WIN32)
107 * Windows only defines byte and 16-bit word members of the union and
108 * requires special casing of all raw address code...
110 # define s6_addr32 error_need_win32_specific_code
112 #endif /* AF_INET6 && !s6_addr32 */
119 # define HTTP_MAX_URI 1024 /* Max length of URI string */
120 # define HTTP_MAX_HOST 256 /* Max length of hostname string */
121 # define HTTP_MAX_BUFFER 2048 /* Max length of data buffer */
122 # define HTTP_MAX_VALUE 256 /* Max header field value length */
126 * Types and structures...
129 typedef enum http_auth_e
/**** HTTP authentication types ****/
131 HTTP_AUTH_NONE
, /* No authentication in use */
132 HTTP_AUTH_BASIC
, /* Basic authentication in use */
133 HTTP_AUTH_MD5
, /* Digest authentication in use */
134 HTTP_AUTH_MD5_SESS
, /* MD5-session authentication in use */
135 HTTP_AUTH_MD5_INT
, /* Digest authentication in use for body */
136 HTTP_AUTH_MD5_SESS_INT
, /* MD5-session authentication in use for body */
137 HTTP_AUTH_NEGOTIATE
/* GSSAPI authentication in use @since CUPS 1.3@ */
140 typedef enum http_encoding_e
/**** HTTP transfer encoding values ****/
142 HTTP_ENCODE_LENGTH
, /* Data is sent with Content-Length */
143 HTTP_ENCODE_CHUNKED
, /* Data is chunked */
144 HTTP_ENCODE_FIELDS
/* Sending HTTP fields */
147 typedef enum http_encryption_e
/**** HTTP encryption values ****/
149 HTTP_ENCRYPT_IF_REQUESTED
, /* Encrypt if requested (TLS upgrade) */
150 HTTP_ENCRYPT_NEVER
, /* Never encrypt */
151 HTTP_ENCRYPT_REQUIRED
, /* Encryption is required (TLS upgrade) */
152 HTTP_ENCRYPT_ALWAYS
/* Always encrypt (SSL) */
155 typedef enum http_field_e
/**** HTTP field names ****/
157 HTTP_FIELD_UNKNOWN
= -1, /* Unknown field */
158 HTTP_FIELD_ACCEPT_LANGUAGE
, /* Accept-Language field */
159 HTTP_FIELD_ACCEPT_RANGES
, /* Accept-Ranges field */
160 HTTP_FIELD_AUTHORIZATION
, /* Authorization field */
161 HTTP_FIELD_CONNECTION
, /* Connection field */
162 HTTP_FIELD_CONTENT_ENCODING
, /* Content-Encoding field */
163 HTTP_FIELD_CONTENT_LANGUAGE
, /* Content-Language field */
164 HTTP_FIELD_CONTENT_LENGTH
, /* Content-Length field */
165 HTTP_FIELD_CONTENT_LOCATION
, /* Content-Location field */
166 HTTP_FIELD_CONTENT_MD5
, /* Content-MD5 field */
167 HTTP_FIELD_CONTENT_RANGE
, /* Content-Range field */
168 HTTP_FIELD_CONTENT_TYPE
, /* Content-Type field */
169 HTTP_FIELD_CONTENT_VERSION
, /* Content-Version field */
170 HTTP_FIELD_DATE
, /* Date field */
171 HTTP_FIELD_HOST
, /* Host field */
172 HTTP_FIELD_IF_MODIFIED_SINCE
, /* If-Modified-Since field */
173 HTTP_FIELD_IF_UNMODIFIED_SINCE
, /* If-Unmodified-Since field */
174 HTTP_FIELD_KEEP_ALIVE
, /* Keep-Alive field */
175 HTTP_FIELD_LAST_MODIFIED
, /* Last-Modified field */
176 HTTP_FIELD_LINK
, /* Link field */
177 HTTP_FIELD_LOCATION
, /* Location field */
178 HTTP_FIELD_RANGE
, /* Range field */
179 HTTP_FIELD_REFERER
, /* Referer field */
180 HTTP_FIELD_RETRY_AFTER
, /* Retry-After field */
181 HTTP_FIELD_TRANSFER_ENCODING
, /* Transfer-Encoding field */
182 HTTP_FIELD_UPGRADE
, /* Upgrade field */
183 HTTP_FIELD_USER_AGENT
, /* User-Agent field */
184 HTTP_FIELD_WWW_AUTHENTICATE
, /* WWW-Authenticate field */
185 HTTP_FIELD_MAX
/* Maximum field index */
188 typedef enum http_keepalive_e
/**** HTTP keep-alive values ****/
190 HTTP_KEEPALIVE_OFF
= 0, /* No keep alive support */
191 HTTP_KEEPALIVE_ON
/* Use keep alive */
194 typedef enum http_state_e
/**** HTTP state values; states
195 **** are server-oriented...
198 HTTP_WAITING
, /* Waiting for command */
199 HTTP_OPTIONS
, /* OPTIONS command, waiting for blank line */
200 HTTP_GET
, /* GET command, waiting for blank line */
201 HTTP_GET_SEND
, /* GET command, sending data */
202 HTTP_HEAD
, /* HEAD command, waiting for blank line */
203 HTTP_POST
, /* POST command, waiting for blank line */
204 HTTP_POST_RECV
, /* POST command, receiving data */
205 HTTP_POST_SEND
, /* POST command, sending data */
206 HTTP_PUT
, /* PUT command, waiting for blank line */
207 HTTP_PUT_RECV
, /* PUT command, receiving data */
208 HTTP_DELETE
, /* DELETE command, waiting for blank line */
209 HTTP_TRACE
, /* TRACE command, waiting for blank line */
210 HTTP_CLOSE
, /* CLOSE command, waiting for blank line */
211 HTTP_STATUS
/* Command complete, sending status */
214 typedef enum http_status_e
/**** HTTP status codes ****/
216 HTTP_ERROR
= -1, /* An error response from httpXxxx() */
218 HTTP_CONTINUE
= 100, /* Everything OK, keep going... */
219 HTTP_SWITCHING_PROTOCOLS
, /* HTTP upgrade to TLS/SSL */
221 HTTP_OK
= 200, /* OPTIONS/GET/HEAD/POST/TRACE command was successful */
222 HTTP_CREATED
, /* PUT command was successful */
223 HTTP_ACCEPTED
, /* DELETE command was successful */
224 HTTP_NOT_AUTHORITATIVE
, /* Information isn't authoritative */
225 HTTP_NO_CONTENT
, /* Successful command, no new data */
226 HTTP_RESET_CONTENT
, /* Content was reset/recreated */
227 HTTP_PARTIAL_CONTENT
, /* Only a partial file was recieved/sent */
229 HTTP_MULTIPLE_CHOICES
= 300, /* Multiple files match request */
230 HTTP_MOVED_PERMANENTLY
, /* Document has moved permanently */
231 HTTP_MOVED_TEMPORARILY
, /* Document has moved temporarily */
232 HTTP_SEE_OTHER
, /* See this other link... */
233 HTTP_NOT_MODIFIED
, /* File not modified */
234 HTTP_USE_PROXY
, /* Must use a proxy to access this URI */
236 HTTP_BAD_REQUEST
= 400, /* Bad request */
237 HTTP_UNAUTHORIZED
, /* Unauthorized to access host */
238 HTTP_PAYMENT_REQUIRED
, /* Payment required */
239 HTTP_FORBIDDEN
, /* Forbidden to access this URI */
240 HTTP_NOT_FOUND
, /* URI was not found */
241 HTTP_METHOD_NOT_ALLOWED
, /* Method is not allowed */
242 HTTP_NOT_ACCEPTABLE
, /* Not Acceptable */
243 HTTP_PROXY_AUTHENTICATION
, /* Proxy Authentication is Required */
244 HTTP_REQUEST_TIMEOUT
, /* Request timed out */
245 HTTP_CONFLICT
, /* Request is self-conflicting */
246 HTTP_GONE
, /* Server has gone away */
247 HTTP_LENGTH_REQUIRED
, /* A content length or encoding is required */
248 HTTP_PRECONDITION
, /* Precondition failed */
249 HTTP_REQUEST_TOO_LARGE
, /* Request entity too large */
250 HTTP_URI_TOO_LONG
, /* URI too long */
251 HTTP_UNSUPPORTED_MEDIATYPE
, /* The requested media type is unsupported */
252 HTTP_REQUESTED_RANGE
, /* The requested range is not satisfiable */
253 HTTP_EXPECTATION_FAILED
, /* The expectation given in an Expect header field was not met */
254 HTTP_UPGRADE_REQUIRED
= 426, /* Upgrade to SSL/TLS required */
256 HTTP_SERVER_ERROR
= 500, /* Internal server error */
257 HTTP_NOT_IMPLEMENTED
, /* Feature not implemented */
258 HTTP_BAD_GATEWAY
, /* Bad gateway */
259 HTTP_SERVICE_UNAVAILABLE
, /* Service is unavailable */
260 HTTP_GATEWAY_TIMEOUT
, /* Gateway connection timed out */
261 HTTP_NOT_SUPPORTED
/* HTTP version not supported */
264 typedef enum http_uri_status_e
/**** URI separation status @since CUPS1.2@ ****/
266 HTTP_URI_OVERFLOW
= -8, /* URI buffer for httpAssembleURI is too small */
267 HTTP_URI_BAD_ARGUMENTS
= -7, /* Bad arguments to function (error) */
268 HTTP_URI_BAD_RESOURCE
= -6, /* Bad resource in URI (error) */
269 HTTP_URI_BAD_PORT
= -5, /* Bad port number in URI (error) */
270 HTTP_URI_BAD_HOSTNAME
= -4, /* Bad hostname in URI (error) */
271 HTTP_URI_BAD_USERNAME
= -3, /* Bad username in URI (error) */
272 HTTP_URI_BAD_SCHEME
= -2, /* Bad scheme in URI (error) */
273 HTTP_URI_BAD_URI
= -1, /* Bad/empty URI (error) */
274 HTTP_URI_OK
= 0, /* URI decoded OK */
275 HTTP_URI_MISSING_SCHEME
, /* Missing scheme in URI (warning) */
276 HTTP_URI_UNKNOWN_SCHEME
, /* Unknown scheme in URI (warning) */
277 HTTP_URI_MISSING_RESOURCE
/* Missing resource in URI (warning) */
280 typedef enum http_uri_coding_e
/**** URI en/decode flags ****/
282 HTTP_URI_CODING_NONE
= 0, /* Don't en/decode anything */
283 HTTP_URI_CODING_USERNAME
= 1, /* En/decode the username portion */
284 HTTP_URI_CODING_HOSTNAME
= 2, /* En/decode the hostname portion */
285 HTTP_URI_CODING_RESOURCE
= 4, /* En/decode the resource portion */
286 HTTP_URI_CODING_MOST
= 7, /* En/decode all but the query */
287 HTTP_URI_CODING_QUERY
= 8, /* En/decode the query portion */
288 HTTP_URI_CODING_ALL
= 15 /* En/decode everything */
291 typedef enum http_version_e
/**** HTTP version numbers ****/
293 HTTP_0_9
= 9, /* HTTP/0.9 */
294 HTTP_1_0
= 100, /* HTTP/1.0 */
295 HTTP_1_1
= 101 /* HTTP/1.1 */
298 typedef union _http_addr_u
/**** Socket address union, which
299 **** makes using IPv6 and other
300 **** address types easier and
301 **** more portable. @since CUPS 1.2@
304 struct sockaddr addr
; /* Base structure for family value */
305 struct sockaddr_in ipv4
; /* IPv4 address */
307 struct sockaddr_in6 ipv6
; /* IPv6 address */
308 #endif /* AF_INET6 */
310 struct sockaddr_un un
; /* Domain socket file */
311 #endif /* AF_LOCAL */
312 char pad
[256]; /* Padding to ensure binary compatibility */
315 typedef struct http_addrlist_s
/**** Socket address list, which is
316 **** used to enumerate all of the
317 **** addresses that are associated
318 **** with a hostname. @since CUPS 1.2@
321 struct http_addrlist_s
*next
; /* Pointer to next address in list */
322 http_addr_t addr
; /* Address */
325 typedef struct _http_s http_t
; /**** HTTP connection type ****/
332 extern void httpBlocking(http_t
*http
, int b
);
333 extern int httpCheck(http_t
*http
);
334 extern void httpClearFields(http_t
*http
);
335 extern void httpClose(http_t
*http
);
336 extern http_t
*httpConnect(const char *host
, int port
);
337 extern http_t
*httpConnectEncrypt(const char *host
, int port
,
338 http_encryption_t encryption
);
339 extern int httpDelete(http_t
*http
, const char *uri
);
340 extern int httpEncryption(http_t
*http
, http_encryption_t e
);
341 extern int httpError(http_t
*http
);
342 extern void httpFlush(http_t
*http
);
343 extern int httpGet(http_t
*http
, const char *uri
);
344 extern char *httpGets(char *line
, int length
, http_t
*http
);
345 extern const char *httpGetDateString(time_t t
);
346 extern time_t httpGetDateTime(const char *s
);
347 extern const char *httpGetField(http_t
*http
, http_field_t field
);
348 extern struct hostent
*httpGetHostByName(const char *name
);
349 extern char *httpGetSubField(http_t
*http
, http_field_t field
,
350 const char *name
, char *value
);
351 extern int httpHead(http_t
*http
, const char *uri
);
352 extern void httpInitialize(void);
353 extern int httpOptions(http_t
*http
, const char *uri
);
354 extern int httpPost(http_t
*http
, const char *uri
);
355 extern int httpPrintf(http_t
*http
, const char *format
, ...)
357 __attribute__ ((__format__ (__printf__
, 2, 3)))
358 # endif /* __GNUC__ */
360 extern int httpPut(http_t
*http
, const char *uri
);
361 extern int httpRead(http_t
*http
, char *buffer
, int length
) _HTTP_DEPRECATED
;
362 extern int httpReconnect(http_t
*http
);
363 extern void httpSeparate(const char *uri
, char *method
,
364 char *username
, char *host
, int *port
,
365 char *resource
) _HTTP_DEPRECATED
;
366 extern void httpSetField(http_t
*http
, http_field_t field
,
368 extern const char *httpStatus(http_status_t status
);
369 extern int httpTrace(http_t
*http
, const char *uri
);
370 extern http_status_t
httpUpdate(http_t
*http
);
371 extern int httpWrite(http_t
*http
, const char *buffer
, int length
) _HTTP_DEPRECATED
;
372 extern char *httpEncode64(char *out
, const char *in
) _HTTP_DEPRECATED
;
373 extern char *httpDecode64(char *out
, const char *in
) _HTTP_DEPRECATED
;
374 extern int httpGetLength(http_t
*http
) _HTTP_DEPRECATED
;
375 extern char *httpMD5(const char *, const char *, const char *,
377 extern char *httpMD5Final(const char *, const char *, const char *,
379 extern char *httpMD5String(const unsigned char *, char [33]);
381 /**** New in CUPS 1.1.19 ****/
382 extern void httpClearCookie(http_t
*http
);
383 extern const char *httpGetCookie(http_t
*http
);
384 extern void httpSetCookie(http_t
*http
, const char *cookie
);
385 extern int httpWait(http_t
*http
, int msec
);
387 /**** New in CUPS 1.1.21 ****/
388 extern char *httpDecode64_2(char *out
, int *outlen
, const char *in
);
389 extern char *httpEncode64_2(char *out
, int outlen
, const char *in
,
391 extern void httpSeparate2(const char *uri
,
392 char *method
, int methodlen
,
393 char *username
, int usernamelen
,
394 char *host
, int hostlen
, int *port
,
395 char *resource
, int resourcelen
) _HTTP_DEPRECATED
;
397 /**** New in CUPS 1.2 ****/
398 extern int httpAddrAny(const http_addr_t
*addr
);
399 extern http_addrlist_t
*httpAddrConnect(http_addrlist_t
*addrlist
, int *sock
);
400 extern int httpAddrEqual(const http_addr_t
*addr1
,
401 const http_addr_t
*addr2
);
402 extern void httpAddrFreeList(http_addrlist_t
*addrlist
);
403 extern http_addrlist_t
*httpAddrGetList(const char *hostname
, int family
,
404 const char *service
);
405 extern int httpAddrLength(const http_addr_t
*addr
);
406 extern int httpAddrLocalhost(const http_addr_t
*addr
);
407 extern char *httpAddrLookup(const http_addr_t
*addr
,
408 char *name
, int namelen
);
409 extern char *httpAddrString(const http_addr_t
*addr
,
411 extern http_uri_status_t
httpAssembleURI(http_uri_coding_t encoding
,
412 char *uri
, int urilen
,
414 const char *username
,
415 const char *host
, int port
,
416 const char *resource
);
417 extern http_uri_status_t
httpAssembleURIf(http_uri_coding_t encoding
,
418 char *uri
, int urilen
,
420 const char *username
,
421 const char *host
, int port
,
422 const char *resourcef
, ...);
423 extern int httpFlushWrite(http_t
*http
);
424 extern int httpGetBlocking(http_t
*http
);
425 extern const char *httpGetDateString2(time_t t
, char *s
, int slen
);
426 extern int httpGetFd(http_t
*http
);
427 extern const char *httpGetHostname(http_t
*http
, char *s
, int slen
);
428 extern off_t
httpGetLength2(http_t
*http
);
429 extern http_status_t
httpGetStatus(http_t
*http
);
430 extern char *httpGetSubField2(http_t
*http
, http_field_t field
,
431 const char *name
, char *value
,
433 extern ssize_t
httpRead2(http_t
*http
, char *buffer
, size_t length
);
434 extern http_uri_status_t
httpSeparateURI(http_uri_coding_t decoding
,
436 char *scheme
, int schemelen
,
437 char *username
, int usernamelen
,
438 char *host
, int hostlen
, int *port
,
439 char *resource
, int resourcelen
);
440 extern void httpSetExpect(http_t
*http
, http_status_t expect
);
441 extern void httpSetLength(http_t
*http
, size_t length
);
442 extern ssize_t
httpWrite2(http_t
*http
, const char *buffer
,
452 # endif /* __cplusplus */
453 #endif /* !_CUPS_HTTP_H_ */
456 * End of "$Id: http.h 6649 2007-07-11 21:46:42Z mike $".