#ifndef _CUPS_HTTP_H_

#define _CUPS_HTTP_H_

#pragma ident "%Z%%M% %I% %E% SMI"

# include <string.h>

# include <time.h>

# ifdef WIN32

# include <winsock.h>

# else

# include <unistd.h>

# include <sys/time.h>

# include <sys/types.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 */

# ifdef AF_LOCAL

# include <sys/un.h>

# endif /* AF_LOCAL */

# endif /* WIN32 */

#ifdef __cplusplus

extern "C" {

#endif

#if defined(AF_INET6) && !defined(s6_addr32)

# if defined(__sun)

# define s6_addr32 _S6_un._S6_u32

# elif defined(__FreeBSD__) || defined(__APPLE__)

# define s6_addr32 __u6_addr.__u6_addr32

# endif /* __sun */

#endif /* AF_INET6 && !s6_addr32 */

# 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 */

typedef enum /* 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_0_9 = 9, /* HTTP/0.9 */

HTTP_1_0 = 100, /* HTTP/1.0 */

HTTP_1_1 = 101 /* HTTP/1.1 */

} http_version_t;

typedef enum

{

HTTP_KEEPALIVE_OFF = 0,

HTTP_KEEPALIVE_ON

} http_keepalive_t;

typedef enum

{

HTTP_ENCODE_LENGTH, /* Data is sent with Content-Length */

HTTP_ENCODE_CHUNKED /* Data is chunked */

} http_encoding_t;

typedef enum

{

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_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_t;

typedef enum

{

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_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_status_t;

typedef enum

{

HTTP_FIELD_UNKNOWN = -1,

HTTP_FIELD_ACCEPT_LANGUAGE,

HTTP_FIELD_ACCEPT_RANGES,

HTTP_FIELD_AUTHORIZATION,

HTTP_FIELD_CONNECTION,

HTTP_FIELD_CONTENT_ENCODING,

HTTP_FIELD_CONTENT_LANGUAGE,

HTTP_FIELD_CONTENT_LENGTH,

HTTP_FIELD_CONTENT_LOCATION,

HTTP_FIELD_CONTENT_MD5,

HTTP_FIELD_CONTENT_RANGE,

HTTP_FIELD_CONTENT_TYPE,

HTTP_FIELD_CONTENT_VERSION,

HTTP_FIELD_DATE,

HTTP_FIELD_HOST,

HTTP_FIELD_IF_MODIFIED_SINCE,

HTTP_FIELD_IF_UNMODIFIED_SINCE,

HTTP_FIELD_KEEP_ALIVE,

HTTP_FIELD_LAST_MODIFIED,

HTTP_FIELD_LINK,

HTTP_FIELD_LOCATION,

HTTP_FIELD_RANGE,

HTTP_FIELD_REFERER,

HTTP_FIELD_RETRY_AFTER,

HTTP_FIELD_TRANSFER_ENCODING,

HTTP_FIELD_UPGRADE,

HTTP_FIELD_USER_AGENT,

HTTP_FIELD_WWW_AUTHENTICATE,

HTTP_FIELD_MAX

} http_field_t;

typedef union

{

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[128]; /* Pad to ensure binary compatibility */

} http_addr_t;

typedef struct

{

int fd; /* File descriptor for this socket */

int blocking; /* To block or not to block */

int error; /* Last error on read */

time_t activity; /* Time since last read/write */

http_state_t state; /* State of client */

http_status_t status; /* Status of last request */

http_version_t version; /* Protocol version */

http_keepalive_t keep_alive; /* Keep-alive supported? */

struct sockaddr_in oldaddr; /* Address of connected host */

char hostname[HTTP_MAX_HOST],

/* Name of connected host */

fields[HTTP_FIELD_MAX][HTTP_MAX_VALUE];

/* Field values */

char *data; /* Pointer to data buffer */

http_encoding_t data_encoding; /* Chunked or not */

int data_remaining; /* Number of bytes left */

int used; /* Number of bytes used in buffer */

char buffer[HTTP_MAX_BUFFER];

/* Buffer for messages */

int auth_type; /* Authentication in use */

char nonce[HTTP_MAX_VALUE];

/* Nonce value */

int nonce_count; /* Nonce count */

void *tls; /* TLS state information */

http_encryption_t encryption; /* Encryption requirements */

/**** New in CUPS 1.1.19 ****/

fd_set *input_set; /* select() set for httpWait() */

http_status_t expect; /* Expect: header */

char *cookie; /* Cookie value(s) */

/**** New in CUPS 1.1.20 ****/

char authstring[HTTP_MAX_VALUE],

/* Current Authentication value */

userpass[HTTP_MAX_VALUE];

/* Username:password string */

int digest_tries; /* Number of tries for digest auth */

/**** New in CUPS 1.2 ****/

http_addr_t hostaddr; /* Host address and port */

} http_t;

# define httpBlocking(http,b) (http)->blocking = (b)

extern int httpCheck(http_t *http);

# define httpClearFields(http) memset((http)->fields, 0, sizeof((http)->fields)),\

httpSetField((http), HTTP_FIELD_HOST, (http)->hostname)

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 encrypt);

extern int httpDelete(http_t *http, const char *uri);

extern int httpEncryption(http_t *http, http_encryption_t e);

# define httpError(http) ((http)->error)

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);

# define httpGetField(http,field) (http)->fields[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);

extern int httpReconnect(http_t *http);

extern void httpSeparate(const char *uri, char *method,

char *username, char *host, int *port,

char *resource);

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);

extern char *httpEncode64(char *out, const char *in);

extern char *httpDecode64(char *out, const char *in);

extern int httpGetLength(http_t *http);

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]);

extern void httpClearCookie(http_t *http);

#define httpGetCookie(http) ((http)->cookie)

extern void httpSetCookie(http_t *http, const char *cookie);

extern int httpWait(http_t *http, int msec);

extern char *httpDecode64_2(char *out, int *outlen, const char *in);

extern char *httpEncode64_2(char *out, int outlen, const char *in,

int inlen);

extern void httpSeparate2(const char *uri,

char *method, int methodlen,

char *username, int usernamelen,

char *host, int hostlen, int *port,

char *resource, int resourcelen);

extern int httpAddrAny(const http_addr_t *addr);

extern int httpAddrEqual(const http_addr_t *addr1,

const http_addr_t *addr2);

extern void httpAddrLoad(const struct hostent *host, int port,

int n, http_addr_t *addr);

extern int httpAddrLocalhost(const http_addr_t *addr);

extern char *httpAddrLookup(const http_addr_t *addr,

char *name, int namelen);

extern char *httpAddrString(const http_addr_t *addr,

char *s, int slen);

#include <stdio.h>

extern void httpDumpData(FILE *, const char *, const char *, int);

#ifdef __cplusplus

}

#endif

#endif /* !_CUPS_HTTP_H_ */