/usr/include/cups/http.h is in libcups2-dev 1.5.2-9ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* "$Id: http.h 9801 2011-05-21 04:02:41Z mike $"
*
* Hyper-Text Transport Protocol definitions for CUPS.
*
* Copyright 2007-2011 by Apple Inc.
* Copyright 1997-2007 by Easy Software Products, all rights reserved.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*
* This file is subject to the Apple OS-Developed Software exception.
*/
#ifndef _CUPS_HTTP_H_
# define _CUPS_HTTP_H_
/*
* Include necessary headers...
*/
# include "versioning.h"
# include "array.h"
# include <string.h>
# include <time.h>
# include <sys/types.h>
# ifdef WIN32
# ifndef __CUPS_SSIZE_T_DEFINED
# define __CUPS_SSIZE_T_DEFINED
/* Windows does not support the ssize_t type, so map it to off_t... */
typedef off_t ssize_t; /* @private@ */
# endif /* !__CUPS_SSIZE_T_DEFINED */
# include <winsock2.h>
# include <ws2tcpip.h>
# else
# ifdef __sgi
# define INET6 /* IRIX IPv6 support... */
# endif /* __sgi */
# include <unistd.h>
# include <sys/time.h>
# include <sys/socket.h>
# include <netdb.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <netinet/in_systm.h>
# include <netinet/ip.h>
# if !defined(__APPLE__) || !defined(TCP_NODELAY)
# include <netinet/tcp.h>
# endif /* !__APPLE__ || !TCP_NODELAY */
# if defined(AF_UNIX) && !defined(AF_LOCAL)
# define AF_LOCAL AF_UNIX /* Older UNIX's have old names... */
# endif /* AF_UNIX && !AF_LOCAL */
# ifdef AF_LOCAL
# include <sys/un.h>
# endif /* AF_LOCAL */
# if defined(LOCAL_PEERCRED) && !defined(SO_PEERCRED)
# define SO_PEERCRED LOCAL_PEERCRED
# endif /* LOCAL_PEERCRED && !SO_PEERCRED */
# endif /* WIN32 */
/*
* C++ magic...
*/
# ifdef __cplusplus
extern "C" {
# endif /* __cplusplus */
/*
* Oh, the wonderful world of IPv6 compatibility. Apparently some
* implementations expose the (more logical) 32-bit address parts
* to everyone, while others only expose it to kernel code... To
* make supporting IPv6 even easier, each vendor chose different
* core structure and union names, so the same defines or code
* can't be used on all platforms.
*
* The following will likely need tweaking on new platforms that
* support IPv6 - the "s6_addr32" define maps to the 32-bit integer
* array in the in6_addr union, which is named differently on various
* platforms.
*/
#if defined(AF_INET6) && !defined(s6_addr32)
# if defined(__sun)
# define s6_addr32 _S6_un._S6_u32
# elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)|| defined(__DragonFly__)
# define s6_addr32 __u6_addr.__u6_addr32
# elif defined(__osf__)
# define s6_addr32 s6_un.sa6_laddr
# elif defined(WIN32)
/*
* Windows only defines byte and 16-bit word members of the union and
* requires special casing of all raw address code...
*/
# define s6_addr32 error_need_win32_specific_code
# endif /* __sun */
#endif /* AF_INET6 && !s6_addr32 */
/*
* Limits...
*/
# define HTTP_MAX_URI 1024 /* Max length of URI string */
# define HTTP_MAX_HOST 256 /* Max length of hostname string */
# define HTTP_MAX_BUFFER 2048 /* Max length of data buffer */
# define HTTP_MAX_VALUE 256 /* Max header field value length */
/*
* Types and structures...
*/
typedef enum http_auth_e /**** HTTP authentication types ****/
{
HTTP_AUTH_NONE, /* No authentication in use */
HTTP_AUTH_BASIC, /* Basic authentication in use */
HTTP_AUTH_MD5, /* Digest authentication in use */
HTTP_AUTH_MD5_SESS, /* MD5-session authentication in use */
HTTP_AUTH_MD5_INT, /* Digest authentication in use for body */
HTTP_AUTH_MD5_SESS_INT, /* MD5-session authentication in use for body */
HTTP_AUTH_NEGOTIATE /* GSSAPI authentication in use @since CUPS 1.3/Mac OS X 10.5@ */
} http_auth_t;
typedef enum http_encoding_e /**** HTTP transfer encoding values ****/
{
HTTP_ENCODE_LENGTH, /* Data is sent with Content-Length */
HTTP_ENCODE_CHUNKED, /* Data is chunked */
HTTP_ENCODE_FIELDS /* Sending HTTP fields */
} http_encoding_t;
typedef enum http_encryption_e /**** HTTP encryption values ****/
{
HTTP_ENCRYPT_IF_REQUESTED, /* Encrypt if requested (TLS upgrade) */
HTTP_ENCRYPT_NEVER, /* Never encrypt */
HTTP_ENCRYPT_REQUIRED, /* Encryption is required (TLS upgrade) */
HTTP_ENCRYPT_ALWAYS /* Always encrypt (SSL) */
} http_encryption_t;
typedef enum http_field_e /**** HTTP field names ****/
{
HTTP_FIELD_UNKNOWN = -1, /* Unknown field */
HTTP_FIELD_ACCEPT_LANGUAGE, /* Accept-Language field */
HTTP_FIELD_ACCEPT_RANGES, /* Accept-Ranges field */
HTTP_FIELD_AUTHORIZATION, /* Authorization field */
HTTP_FIELD_CONNECTION, /* Connection field */
HTTP_FIELD_CONTENT_ENCODING, /* Content-Encoding field */
HTTP_FIELD_CONTENT_LANGUAGE, /* Content-Language field */
HTTP_FIELD_CONTENT_LENGTH, /* Content-Length field */
HTTP_FIELD_CONTENT_LOCATION, /* Content-Location field */
HTTP_FIELD_CONTENT_MD5, /* Content-MD5 field */
HTTP_FIELD_CONTENT_RANGE, /* Content-Range field */
HTTP_FIELD_CONTENT_TYPE, /* Content-Type field */
HTTP_FIELD_CONTENT_VERSION, /* Content-Version field */
HTTP_FIELD_DATE, /* Date field */
HTTP_FIELD_HOST, /* Host field */
HTTP_FIELD_IF_MODIFIED_SINCE, /* If-Modified-Since field */
HTTP_FIELD_IF_UNMODIFIED_SINCE, /* If-Unmodified-Since field */
HTTP_FIELD_KEEP_ALIVE, /* Keep-Alive field */
HTTP_FIELD_LAST_MODIFIED, /* Last-Modified field */
HTTP_FIELD_LINK, /* Link field */
HTTP_FIELD_LOCATION, /* Location field */
HTTP_FIELD_RANGE, /* Range field */
HTTP_FIELD_REFERER, /* Referer field */
HTTP_FIELD_RETRY_AFTER, /* Retry-After field */
HTTP_FIELD_TRANSFER_ENCODING, /* Transfer-Encoding field */
HTTP_FIELD_UPGRADE, /* Upgrade field */
HTTP_FIELD_USER_AGENT, /* User-Agent field */
HTTP_FIELD_WWW_AUTHENTICATE, /* WWW-Authenticate field */
HTTP_FIELD_MAX /* Maximum field index */
} http_field_t;
typedef enum http_keepalive_e /**** HTTP keep-alive values ****/
{
HTTP_KEEPALIVE_OFF = 0, /* No keep alive support */
HTTP_KEEPALIVE_ON /* Use keep alive */
} http_keepalive_t;
typedef enum http_state_e /**** HTTP state values; states
**** are server-oriented...
****/
{
HTTP_WAITING, /* Waiting for command */
HTTP_OPTIONS, /* OPTIONS command, waiting for blank line */
HTTP_GET, /* GET command, waiting for blank line */
HTTP_GET_SEND, /* GET command, sending data */
HTTP_HEAD, /* HEAD command, waiting for blank line */
HTTP_POST, /* POST command, waiting for blank line */
HTTP_POST_RECV, /* POST command, receiving data */
HTTP_POST_SEND, /* POST command, sending data */
HTTP_PUT, /* PUT command, waiting for blank line */
HTTP_PUT_RECV, /* PUT command, receiving data */
HTTP_DELETE, /* DELETE command, waiting for blank line */
HTTP_TRACE, /* TRACE command, waiting for blank line */
HTTP_CLOSE, /* CLOSE command, waiting for blank line */
HTTP_STATUS /* Command complete, sending status */
} http_state_t;
typedef enum http_status_e /**** HTTP status codes ****/
{
HTTP_ERROR = -1, /* An error response from httpXxxx() */
HTTP_CONTINUE = 100, /* Everything OK, keep going... */
HTTP_SWITCHING_PROTOCOLS, /* HTTP upgrade to TLS/SSL */
HTTP_OK = 200, /* OPTIONS/GET/HEAD/POST/TRACE command was successful */
HTTP_CREATED, /* PUT command was successful */
HTTP_ACCEPTED, /* DELETE command was successful */
HTTP_NOT_AUTHORITATIVE, /* Information isn't authoritative */
HTTP_NO_CONTENT, /* Successful command, no new data */
HTTP_RESET_CONTENT, /* Content was reset/recreated */
HTTP_PARTIAL_CONTENT, /* Only a partial file was recieved/sent */
HTTP_MULTIPLE_CHOICES = 300, /* Multiple files match request */
HTTP_MOVED_PERMANENTLY, /* Document has moved permanently */
HTTP_MOVED_TEMPORARILY, /* Document has moved temporarily */
HTTP_SEE_OTHER, /* See this other link... */
HTTP_NOT_MODIFIED, /* File not modified */
HTTP_USE_PROXY, /* Must use a proxy to access this URI */
HTTP_BAD_REQUEST = 400, /* Bad request */
HTTP_UNAUTHORIZED, /* Unauthorized to access host */
HTTP_PAYMENT_REQUIRED, /* Payment required */
HTTP_FORBIDDEN, /* Forbidden to access this URI */
HTTP_NOT_FOUND, /* URI was not found */
HTTP_METHOD_NOT_ALLOWED, /* Method is not allowed */
HTTP_NOT_ACCEPTABLE, /* Not Acceptable */
HTTP_PROXY_AUTHENTICATION, /* Proxy Authentication is Required */
HTTP_REQUEST_TIMEOUT, /* Request timed out */
HTTP_CONFLICT, /* Request is self-conflicting */
HTTP_GONE, /* Server has gone away */
HTTP_LENGTH_REQUIRED, /* A content length or encoding is required */
HTTP_PRECONDITION, /* Precondition failed */
HTTP_REQUEST_TOO_LARGE, /* Request entity too large */
HTTP_URI_TOO_LONG, /* URI too long */
HTTP_UNSUPPORTED_MEDIATYPE, /* The requested media type is unsupported */
HTTP_REQUESTED_RANGE, /* The requested range is not satisfiable */
HTTP_EXPECTATION_FAILED, /* The expectation given in an Expect header field was not met */
HTTP_UPGRADE_REQUIRED = 426, /* Upgrade to SSL/TLS required */
HTTP_SERVER_ERROR = 500, /* Internal server error */
HTTP_NOT_IMPLEMENTED, /* Feature not implemented */
HTTP_BAD_GATEWAY, /* Bad gateway */
HTTP_SERVICE_UNAVAILABLE, /* Service is unavailable */
HTTP_GATEWAY_TIMEOUT, /* Gateway connection timed out */
HTTP_NOT_SUPPORTED, /* HTTP version not supported */
HTTP_AUTHORIZATION_CANCELED = 1000, /* User canceled authorization @since CUPS 1.4@ */
HTTP_PKI_ERROR, /* Error negotiating a secure connection @since CUPS 1.5/Mac OS X 10.7@ */
HTTP_WEBIF_DISABLED /* Web interface is disabled @private@ */
} http_status_t;
typedef enum http_uri_status_e /**** URI separation status @since CUPS 1.2@ ****/
{
HTTP_URI_OVERFLOW = -8, /* URI buffer for httpAssembleURI is too small */
HTTP_URI_BAD_ARGUMENTS = -7, /* Bad arguments to function (error) */
HTTP_URI_BAD_RESOURCE = -6, /* Bad resource in URI (error) */
HTTP_URI_BAD_PORT = -5, /* Bad port number in URI (error) */
HTTP_URI_BAD_HOSTNAME = -4, /* Bad hostname in URI (error) */
HTTP_URI_BAD_USERNAME = -3, /* Bad username in URI (error) */
HTTP_URI_BAD_SCHEME = -2, /* Bad scheme in URI (error) */
HTTP_URI_BAD_URI = -1, /* Bad/empty URI (error) */
HTTP_URI_OK = 0, /* URI decoded OK */
HTTP_URI_MISSING_SCHEME, /* Missing scheme in URI (warning) */
HTTP_URI_UNKNOWN_SCHEME, /* Unknown scheme in URI (warning) */
HTTP_URI_MISSING_RESOURCE /* Missing resource in URI (warning) */
} http_uri_status_t;
typedef enum http_uri_coding_e /**** URI en/decode flags ****/
{
HTTP_URI_CODING_NONE = 0, /* Don't en/decode anything */
HTTP_URI_CODING_USERNAME = 1, /* En/decode the username portion */
HTTP_URI_CODING_HOSTNAME = 2, /* En/decode the hostname portion */
HTTP_URI_CODING_RESOURCE = 4, /* En/decode the resource portion */
HTTP_URI_CODING_MOST = 7, /* En/decode all but the query */
HTTP_URI_CODING_QUERY = 8, /* En/decode the query portion */
HTTP_URI_CODING_ALL = 15 /* En/decode everything */
} http_uri_coding_t;
typedef enum http_version_e /**** HTTP version numbers ****/
{
HTTP_0_9 = 9, /* HTTP/0.9 */
HTTP_1_0 = 100, /* HTTP/1.0 */
HTTP_1_1 = 101 /* HTTP/1.1 */
} http_version_t;
typedef union _http_addr_u /**** Socket address union, which
**** makes using IPv6 and other
**** address types easier and
**** more portable. @since CUPS 1.2/Mac OS X 10.5@
****/
{
struct sockaddr addr; /* Base structure for family value */
struct sockaddr_in ipv4; /* IPv4 address */
#ifdef AF_INET6
struct sockaddr_in6 ipv6; /* IPv6 address */
#endif /* AF_INET6 */
#ifdef AF_LOCAL
struct sockaddr_un un; /* Domain socket file */
#endif /* AF_LOCAL */
char pad[256]; /* Padding to ensure binary compatibility */
} http_addr_t;
typedef struct http_addrlist_s /**** Socket address list, which is
**** used to enumerate all of the
**** addresses that are associated
**** with a hostname. @since CUPS 1.2/Mac OS X 10.5@
****/
{
struct http_addrlist_s *next; /* Pointer to next address in list */
http_addr_t addr; /* Address */
} http_addrlist_t;
typedef struct _http_s http_t; /**** HTTP connection type ****/
typedef struct http_credential_s /**** HTTP credential data @since CUPS 1.5/Mac OS X 10.7@ ****/
{
void *data; /* Pointer to credential data */
size_t datalen; /* Credential length */
} http_credential_t;
typedef int (*http_timeout_cb_t)(http_t *http, void *user_data);
/**** HTTP timeout callback @since CUPS 1.5/Mac OS X 10.7@ ****/
/*
* Prototypes...
*/
extern void httpBlocking(http_t *http, int b);
extern int httpCheck(http_t *http);
extern void httpClearFields(http_t *http);
extern void httpClose(http_t *http);
extern http_t *httpConnect(const char *host, int port);
extern http_t *httpConnectEncrypt(const char *host, int port,
http_encryption_t encryption);
extern int httpDelete(http_t *http, const char *uri);
extern int httpEncryption(http_t *http, http_encryption_t e);
extern int httpError(http_t *http);
extern void httpFlush(http_t *http);
extern int httpGet(http_t *http, const char *uri);
extern char *httpGets(char *line, int length, http_t *http);
extern const char *httpGetDateString(time_t t);
extern time_t httpGetDateTime(const char *s);
extern const char *httpGetField(http_t *http, http_field_t field);
extern struct hostent *httpGetHostByName(const char *name);
extern char *httpGetSubField(http_t *http, http_field_t field,
const char *name, char *value);
extern int httpHead(http_t *http, const char *uri);
extern void httpInitialize(void);
extern int httpOptions(http_t *http, const char *uri);
extern int httpPost(http_t *http, const char *uri);
extern int httpPrintf(http_t *http, const char *format, ...)
# ifdef __GNUC__
__attribute__ ((__format__ (__printf__, 2, 3)))
# endif /* __GNUC__ */
;
extern int httpPut(http_t *http, const char *uri);
extern int httpRead(http_t *http, char *buffer, int length) _CUPS_DEPRECATED;
extern int httpReconnect(http_t *http);
extern void httpSeparate(const char *uri, char *method,
char *username, char *host, int *port,
char *resource) _CUPS_DEPRECATED;
extern void httpSetField(http_t *http, http_field_t field,
const char *value);
extern const char *httpStatus(http_status_t status);
extern int httpTrace(http_t *http, const char *uri);
extern http_status_t httpUpdate(http_t *http);
extern int httpWrite(http_t *http, const char *buffer, int length) _CUPS_DEPRECATED;
extern char *httpEncode64(char *out, const char *in) _CUPS_DEPRECATED;
extern char *httpDecode64(char *out, const char *in) _CUPS_DEPRECATED;
extern int httpGetLength(http_t *http) _CUPS_DEPRECATED;
extern char *httpMD5(const char *, const char *, const char *,
char [33]);
extern char *httpMD5Final(const char *, const char *, const char *,
char [33]);
extern char *httpMD5String(const unsigned char *, char [33]);
/**** New in CUPS 1.1.19 ****/
extern void httpClearCookie(http_t *http) _CUPS_API_1_1_19;
extern const char *httpGetCookie(http_t *http) _CUPS_API_1_1_19;
extern void httpSetCookie(http_t *http, const char *cookie) _CUPS_API_1_1_19;
extern int httpWait(http_t *http, int msec) _CUPS_API_1_1_19;
/**** New in CUPS 1.1.21 ****/
extern char *httpDecode64_2(char *out, int *outlen, const char *in) _CUPS_API_1_1_21;
extern char *httpEncode64_2(char *out, int outlen, const char *in,
int inlen) _CUPS_API_1_1_21;
extern void httpSeparate2(const char *uri,
char *method, int methodlen,
char *username, int usernamelen,
char *host, int hostlen, int *port,
char *resource, int resourcelen) _CUPS_DEPRECATED;
/**** New in CUPS 1.2/Mac OS X 10.5 ****/
extern int httpAddrAny(const http_addr_t *addr) _CUPS_API_1_2;
extern http_addrlist_t *httpAddrConnect(http_addrlist_t *addrlist, int *sock) _CUPS_API_1_2;
extern int httpAddrEqual(const http_addr_t *addr1,
const http_addr_t *addr2) _CUPS_API_1_2;
extern void httpAddrFreeList(http_addrlist_t *addrlist) _CUPS_API_1_2;
extern http_addrlist_t *httpAddrGetList(const char *hostname, int family,
const char *service) _CUPS_API_1_2;
extern int httpAddrLength(const http_addr_t *addr) _CUPS_API_1_2;
extern int httpAddrLocalhost(const http_addr_t *addr) _CUPS_API_1_2;
extern char *httpAddrLookup(const http_addr_t *addr,
char *name, int namelen) _CUPS_API_1_2;
extern char *httpAddrString(const http_addr_t *addr,
char *s, int slen) _CUPS_API_1_2;
extern http_uri_status_t httpAssembleURI(http_uri_coding_t encoding,
char *uri, int urilen,
const char *scheme,
const char *username,
const char *host, int port,
const char *resource) _CUPS_API_1_2;
extern http_uri_status_t httpAssembleURIf(http_uri_coding_t encoding,
char *uri, int urilen,
const char *scheme,
const char *username,
const char *host, int port,
const char *resourcef, ...) _CUPS_API_1_2;
extern int httpFlushWrite(http_t *http) _CUPS_API_1_2;
extern int httpGetBlocking(http_t *http) _CUPS_API_1_2;
extern const char *httpGetDateString2(time_t t, char *s, int slen) _CUPS_API_1_2;
extern int httpGetFd(http_t *http) _CUPS_API_1_2;
extern const char *httpGetHostname(http_t *http, char *s, int slen) _CUPS_API_1_2;
extern off_t httpGetLength2(http_t *http) _CUPS_API_1_2;
extern http_status_t httpGetStatus(http_t *http) _CUPS_API_1_2;
extern char *httpGetSubField2(http_t *http, http_field_t field,
const char *name, char *value,
int valuelen) _CUPS_API_1_2;
extern ssize_t httpRead2(http_t *http, char *buffer, size_t length) _CUPS_API_1_2;
extern http_uri_status_t httpSeparateURI(http_uri_coding_t decoding,
const char *uri,
char *scheme, int schemelen,
char *username, int usernamelen,
char *host, int hostlen, int *port,
char *resource, int resourcelen) _CUPS_API_1_2;
extern void httpSetExpect(http_t *http, http_status_t expect) _CUPS_API_1_2;
extern void httpSetLength(http_t *http, size_t length) _CUPS_API_1_2;
extern ssize_t httpWrite2(http_t *http, const char *buffer,
size_t length) _CUPS_API_1_2;
/**** New in CUPS 1.3/Mac OS X 10.5 ****/
extern char *httpGetAuthString(http_t *http) _CUPS_API_1_3;
extern void httpSetAuthString(http_t *http, const char *scheme,
const char *data) _CUPS_API_1_3;
/**** New in CUPS 1.5/Mac OS X 10.7 ****/
extern int httpAddCredential(cups_array_t *credentials,
const void *data, size_t datalen)
_CUPS_API_1_5;
extern int httpCopyCredentials(http_t *http,
cups_array_t **credentials)
_CUPS_API_1_5;
extern void httpFreeCredentials(cups_array_t *certs) _CUPS_API_1_5;
extern int httpSetCredentials(http_t *http, cups_array_t *certs)
_CUPS_API_1_5;
extern void httpSetTimeout(http_t *http, double timeout,
http_timeout_cb_t cb, void *user_data);
/*
* C++ magic...
*/
# ifdef __cplusplus
}
# endif /* __cplusplus */
#endif /* !_CUPS_HTTP_H_ */
/*
* End of "$Id: http.h 9801 2011-05-21 04:02:41Z mike $".
*/
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