curl.h

  CINIT(SSL_CTX_DATA, OBJECTPOINT, 109),

  /* FTP Option that causes missing dirs to be created on the remote server */
  CINIT(FTP_CREATE_MISSING_DIRS, LONG, 110),

  /* Set this to a bitmask value to enable the particular authentications
     methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
     Note that setting multiple bits may cause extra network round-trips. */
  CINIT(PROXYAUTH, LONG, 111),

  /* FTP option that changes the timeout, in seconds, associated with
     getting a response.  This is different from transfer timeout time and
     essentially places a demand on the FTP server to acknowledge commands
     in a timely manner. */
  CINIT(FTP_RESPONSE_TIMEOUT, LONG, 112),

  /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
     tell libcurl to resolve names to those IP versions only. This only has
     affect on systems with support for more than one, i.e IPv4 _and_ IPv6. */
  CINIT(IPRESOLVE, LONG, 113),

  /* Set this option to limit the size of a file that will be downloaded from
     an HTTP or FTP server.

     Note there is also _LARGE version which adds large file support for
     platforms which have larger off_t sizes.  See MAXFILESIZE_LARGE below. */
  CINIT(MAXFILESIZE, LONG, 114),

  /* See the comment for INFILESIZE above, but in short, specifies
   * the size of the file being uploaded.  -1 means unknown.
   */
  CINIT(INFILESIZE_LARGE, OFF_T, 115),

  /* Sets the continuation offset.  There is also a LONG version of this;
   * look above for RESUME_FROM.
   */
  CINIT(RESUME_FROM_LARGE, OFF_T, 116),

  /* Sets the maximum size of data that will be downloaded from
   * an HTTP or FTP server.  See MAXFILESIZE above for the LONG version.
   */
  CINIT(MAXFILESIZE_LARGE, OFF_T, 117),

  /* Set this option to the file name of your .netrc file you want libcurl
     to parse (using the CURLOPT_NETRC option). If not set, libcurl will do
     a poor attempt to find the user's home directory and check for a .netrc
     file in there. */
  CINIT(NETRC_FILE, OBJECTPOINT, 118),

  /* Enable SSL/TLS for FTP, pick one of:
     CURLFTPSSL_TRY     - try using SSL, proceed anyway otherwise
     CURLFTPSSL_CONTROL - SSL for the control connection or fail
     CURLFTPSSL_ALL     - SSL for all communication or fail
  */
  CINIT(USE_SSL, LONG, 119),

  /* The _LARGE version of the standard POSTFIELDSIZE option */
  CINIT(POSTFIELDSIZE_LARGE, OFF_T, 120),

  /* Enable/disable the TCP Nagle algorithm */
  CINIT(TCP_NODELAY, LONG, 121),

  /* 122 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
  /* 123 OBSOLETE. Gone in 7.16.0 */
  /* 124 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
  /* 125 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
  /* 126 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
  /* 127 OBSOLETE. Gone in 7.16.0 */
  /* 128 OBSOLETE. Gone in 7.16.0 */

  /* When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option
     can be used to change libcurl's default action which is to first try
     "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK
     response has been received.

     Available parameters are:
     CURLFTPAUTH_DEFAULT - let libcurl decide
     CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
     CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
  */
  CINIT(FTPSSLAUTH, LONG, 129),

  CINIT(IOCTLFUNCTION, FUNCTIONPOINT, 130),
  CINIT(IOCTLDATA, OBJECTPOINT, 131),

  /* 132 OBSOLETE. Gone in 7.16.0 */
  /* 133 OBSOLETE. Gone in 7.16.0 */

  /* zero terminated string for pass on to the FTP server when asked for
     "account" info */
  CINIT(FTP_ACCOUNT, OBJECTPOINT, 134),

  /* feed cookies into cookie engine */
  CINIT(COOKIELIST, OBJECTPOINT, 135),

  /* ignore Content-Length */
  CINIT(IGNORE_CONTENT_LENGTH, LONG, 136),

  /* Set to non-zero to skip the IP address received in a 227 PASV FTP server
     response. Typically used for FTP-SSL purposes but is not restricted to
     that. libcurl will then instead use the same IP address it used for the
     control connection. */
  CINIT(FTP_SKIP_PASV_IP, LONG, 137),

  /* Select "file method" to use when doing FTP, see the curl_ftpmethod
     above. */
  CINIT(FTP_FILEMETHOD, LONG, 138),

  /* Local port number to bind the socket to */
  CINIT(LOCALPORT, LONG, 139),

  /* Number of ports to try, including the first one set with LOCALPORT.
     Thus, setting it to 1 will make no additional attempts but the first.
  */
  CINIT(LOCALPORTRANGE, LONG, 140),

  /* no transfer, set up connection and let application use the socket by
     extracting it with CURLINFO_LASTSOCKET */
  CINIT(CONNECT_ONLY, LONG, 141),

  /* Function that will be called to convert from the
     network encoding (instead of using the iconv calls in libcurl) */
  CINIT(CONV_FROM_NETWORK_FUNCTION, FUNCTIONPOINT, 142),

  /* Function that will be called to convert to the
     network encoding (instead of using the iconv calls in libcurl) */
  CINIT(CONV_TO_NETWORK_FUNCTION, FUNCTIONPOINT, 143),

  /* Function that will be called to convert from UTF8
     (instead of using the iconv calls in libcurl)
     Note that this is used only for SSL certificate processing */
  CINIT(CONV_FROM_UTF8_FUNCTION, FUNCTIONPOINT, 144),

  /* if the connection proceeds too quickly then need to slow it down */
  /* limit-rate: maximum number of bytes per second to send or receive */
  CINIT(MAX_SEND_SPEED_LARGE, OFF_T, 145),
  CINIT(MAX_RECV_SPEED_LARGE, OFF_T, 146),

  /* Pointer to command string to send if USER/PASS fails. */
  CINIT(FTP_ALTERNATIVE_TO_USER, OBJECTPOINT, 147),

  /* callback function for setting socket options */
  CINIT(SOCKOPTFUNCTION, FUNCTIONPOINT, 148),
  CINIT(SOCKOPTDATA, OBJECTPOINT, 149),

  /* set to 0 to disable session ID re-use for this transfer, default is
     enabled (== 1) */
  CINIT(SSL_SESSIONID_CACHE, LONG, 150),

  /* allowed SSH authentication methods */
  CINIT(SSH_AUTH_TYPES, LONG, 151),

  /* Used by scp/sftp to do public/private key authentication */
  CINIT(SSH_PUBLIC_KEYFILE, OBJECTPOINT, 152),
  CINIT(SSH_PRIVATE_KEYFILE, OBJECTPOINT, 153),

  /* Send CCC (Clear Command Channel) after authentication */
  CINIT(FTP_SSL_CCC, LONG, 154),

  /* Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution */
  CINIT(TIMEOUT_MS, LONG, 155),
  CINIT(CONNECTTIMEOUT_MS, LONG, 156),

  /* set to zero to disable the libcurl's decoding and thus pass the raw body
     data to the appliction even when it is encoded/compressed */
  CINIT(HTTP_TRANSFER_DECODING, LONG, 157),
  CINIT(HTTP_CONTENT_DECODING, LONG, 158),

  /* Permission used when creating new files and directories on the remote
     server for protocols that support it, SFTP/SCP/FILE */
  CINIT(NEW_FILE_PERMS, LONG, 159),
  CINIT(NEW_DIRECTORY_PERMS, LONG, 160),

  /* Obey RFC 2616/10.3.2 and keep POSTs as POSTs after a 301 */
  CINIT(POST301, LONG, 161),

  /* used by scp/sftp to verify the host's public key */
  CINIT(SSH_HOST_PUBLIC_KEY_MD5, OBJECTPOINT, 162),

  /* Callback function for opening socket (instead of socket(2)). Optionally,
     callback is able change the address or refuse to connect returning
     CURL_SOCKET_BAD.  The callback should have type
     curl_opensocket_callback */
  CINIT(OPENSOCKETFUNCTION, FUNCTIONPOINT, 163),
  CINIT(OPENSOCKETDATA, OBJECTPOINT, 164),

  /* POST volatile input fields. */
  CINIT(COPYPOSTFIELDS, OBJECTPOINT, 165),

  /* set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy */
  CINIT(PROXY_TRANSFER_MODE, LONG, 166),

  /* Callback function for seeking in the input stream */
  CINIT(SEEKFUNCTION, FUNCTIONPOINT, 167),
  CINIT(SEEKDATA, OBJECTPOINT, 168),

  CURLOPT_LASTENTRY /* the last unused */
} CURLoption;

#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
                          the obsolete stuff removed! */

/* Backwards compatibility with older names */
/* These are scheduled to disappear by 2009 */

/* The following were added in 7.17.0 */
#define CURLOPT_SSLKEYPASSWD CURLOPT_KEYPASSWD
#define CURLOPT_FTPAPPEND CURLOPT_APPEND
#define CURLOPT_FTPLISTONLY CURLOPT_DIRLISTONLY
#define CURLOPT_FTP_SSL CURLOPT_USE_SSL

/* The following were added earlier */

#define CURLOPT_SSLCERTPASSWD CURLOPT_KEYPASSWD
#define CURLOPT_KRB4LEVEL CURLOPT_KRBLEVEL

#else
/* This is set if CURL_NO_OLDIES is defined at compile-time */
#undef CURLOPT_DNS_USE_GLOBAL_CACHE /* soon obsolete */
#endif


  /* Below here follows defines for the CURLOPT_IPRESOLVE option. If a host
     name resolves addresses using more than one IP protocol version, this
     option might be handy to force libcurl to use a specific IP version. */
#define CURL_IPRESOLVE_WHATEVER 0 /* default, resolves addresses to all IP
                                     versions that your system allows */
#define CURL_IPRESOLVE_V4       1 /* resolve to ipv4 addresses */
#define CURL_IPRESOLVE_V6       2 /* resolve to ipv6 addresses */

  /* three convenient "aliases" that follow the name scheme better */
#define CURLOPT_WRITEDATA CURLOPT_FILE
#define CURLOPT_READDATA  CURLOPT_INFILE
#define CURLOPT_HEADERDATA CURLOPT_WRITEHEADER

  /* These enums are for use with the CURLOPT_HTTP_VERSION option. */
enum {
  CURL_HTTP_VERSION_NONE, /* setting this means we don't care, and that we'd
                             like the library to choose the best possible
                             for us! */
  CURL_HTTP_VERSION_1_0,  /* please use HTTP 1.0 in the request */
  CURL_HTTP_VERSION_1_1,  /* please use HTTP 1.1 in the request */

  CURL_HTTP_VERSION_LAST /* *ILLEGAL* http version */
};

  /* These enums are for use with the CURLOPT_NETRC option. */
enum CURL_NETRC_OPTION {
  CURL_NETRC_IGNORED,     /* The .netrc will never be read.
                           * This is the default. */
  CURL_NETRC_OPTIONAL,    /* A user:password in the URL will be preferred
                           * to one in the .netrc. */
  CURL_NETRC_REQUIRED,    /* A user:password in the URL will be ignored.
                           * Unless one is set programmatically, the .netrc
                           * will be queried. */
  CURL_NETRC_LAST
};

enum {
  CURL_SSLVERSION_DEFAULT,
  CURL_SSLVERSION_TLSv1,
  CURL_SSLVERSION_SSLv2,
  CURL_SSLVERSION_SSLv3,

  CURL_SSLVERSION_LAST /* never use, keep last */
};


typedef enum {
  CURL_TIMECOND_NONE,

  CURL_TIMECOND_IFMODSINCE,
  CURL_TIMECOND_IFUNMODSINCE,
  CURL_TIMECOND_LASTMOD,

  CURL_TIMECOND_LAST
} curl_TimeCond;


/* curl_strequal() and curl_strnequal() are subject for removal in a future
   libcurl, see lib/README.curlx for details */
CURL_EXTERN int (curl_strequal)(const char *s1, const char *s2);
CURL_EXTERN int (curl_strnequal)(const char *s1, const char *s2, size_t n);

/* name is uppercase CURLFORM_<name> */
#ifdef CFINIT
#undef CFINIT
#endif

#ifdef CURL_ISOCPP
#define CFINIT(name) CURLFORM_ ## name
#else
/* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */
#define CFINIT(name) CURLFORM_/**/name
#endif

typedef enum {
  CFINIT(NOTHING),        /********* the first one is unused ************/

  /*  */
  CFINIT(COPYNAME),
  CFINIT(PTRNAME),
  CFINIT(NAMELENGTH),
  CFINIT(COPYCONTENTS),
  CFINIT(PTRCONTENTS),
  CFINIT(CONTENTSLENGTH),
  CFINIT(FILECONTENT),
  CFINIT(ARRAY),
  CFINIT(OBSOLETE),
  CFINIT(FILE),

  CFINIT(BUFFER),
  CFINIT(BUFFERPTR),
  CFINIT(BUFFERLENGTH),

  CFINIT(CONTENTTYPE),
  CFINIT(CONTENTHEADER),
  CFINIT(FILENAME),
  CFINIT(END),
  CFINIT(OBSOLETE2),

  CFINIT(STREAM),

  CURLFORM_LASTENTRY /* the last unusued */
} CURLformoption;

#undef CFINIT /* done */

/* structure to be used as parameter for CURLFORM_ARRAY */
struct curl_forms {
  CURLformoption option;
  const char     *value;
};

/* use this for multipart formpost building */
/* Returns code for curl_formadd()
 *
 * Returns:
 * CURL_FORMADD_OK             on success
 * CURL_FORMADD_MEMORY         if the FormInfo allocation fails
 * CURL_FORMADD_OPTION_TWICE   if one option is given twice for one Form
 * CURL_FORMADD_NULL           if a null pointer was given for a char
 * CURL_FORMADD_MEMORY         if the allocation of a FormInfo struct failed
 * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
 * CURL_FORMADD_INCOMPLETE     if the some FormInfo is not complete (or error)
 * CURL_FORMADD_MEMORY         if a HttpPost struct cannot be allocated
 * CURL_FORMADD_MEMORY         if some allocation for string copying failed.
 * CURL_FORMADD_ILLEGAL_ARRAY  if an illegal option is used in an array
 *
 ***************************************************************************/
typedef enum {
  CURL_FORMADD_OK, /* first, no error */

  CURL_FORMADD_MEMORY,
  CURL_FORMADD_OPTION_TWICE,
  CURL_FORMADD_NULL,
  CURL_FORMADD_UNKNOWN_OPTION,
  CURL_FORMADD_INCOMPLETE,
  CURL_FORMADD_ILLEGAL_ARRAY,
  CURL_FORMADD_DISABLED, /* libcurl was built with this disabled */

  CURL_FORMADD_LAST /* last */
} CURLFORMcode;

/*
 * NAME curl_formadd()
 *
 * DESCRIPTION
 *
 * Pretty advanved function for building multi-part formposts. Each invoke
 * adds one part that together construct a full post. Then use
 * CURLOPT_HTTPPOST to send it off to libcurl.
 */
CURL_EXTERN CURLFORMcode curl_formadd(struct curl_httppost **httppost,
                                      struct curl_httppost **last_post,
                                      ...);

/*
 * callback function for curl_formget()
 * The void *arg pointer will be the one passed as second argument to curl_formget().
 * The character buffer passed to it must not be freed.
 * Should return the buffer length passed to it as the argument "len" on success.
 */
typedef size_t (*curl_formget_callback)(void *arg, const char *buf, size_t len);

/*
 * NAME curl_formget()
 *
 * DESCRIPTION
 *
 * Serialize a curl_httppost struct built with curl_formadd().
 * Accepts a void pointer as second argument which will be passed to
 * the curl_formget_callback function.
 * Returns 0 on success.
 */
CURL_EXTERN int curl_formget(struct curl_httppost *form, void *arg,
                             curl_formget_callback append);
/*
 * NAME curl_formfree()
 *
 * DESCRIPTION
 *
 * Free a multipart formpost previously built with curl_formadd().
 */
CURL_EXTERN void curl_formfree(struct curl_httppost *form);

/*
 * NAME curl_getenv()
 *
 * DESCRIPTION
 *
 * Returns a malloc()'ed string that MUST be curl_free()ed after usage is
 * complete. DEPRECATED - see lib/README.curlx
 */
CURL_EXTERN char *curl_getenv(const char *variable);

/*
 * NAME curl_version()
 *
 * DESCRIPTION
 *
 * Returns a static ascii string of the libcurl version.
 */
CURL_EXTERN char *curl_version(void);

/*
 * NAME curl_easy_escape()
 *
 * DESCRIPTION
 *
 * Escapes URL strings (converts all letters consider illegal in URLs to their
 * %XX versions). This function returns a new allocated string or NULL if an
 * error occurred.
 */
CURL_EXTERN char *curl_easy_escape(CURL *handle,
                                   const char *string,
                                   int length);

/* the previous version: */
CURL_EXTERN char *curl_escape(const char *string,
                              int length);


/*
 * NAME curl_easy_unescape()
 *
 * DESCRIPTION
 *
 * Unescapes URL encoding in strings (converts all %XX codes to their 8bit
 * versions). This function returns a new allocated string or NULL if an error
 * occurred.
 * Conversion Note: On non-ASCII platforms the ASCII %XX codes are
 * converted into the host encoding.
 */
CURL_EXTERN char *curl_easy_unescape(CURL *handle,
                                     const char *string,
                                     int length,
                                     int *outlength);

/* the previous version */
CURL_EXTERN char *curl_unescape(const char *string,
                                int length);

/*
 * NAME curl_free()
 *
 * DESCRIPTION
 *
 * Provided for de-allocation in the same translation unit that did the
 * allocation. Added in libcurl 7.10
 */
CURL_EXTERN void curl_free(void *p);

/*
 * NAME curl_global_init()
 *
 * DESCRIPTION
 *
 * curl_global_init() should be invoked exactly once for each application that
 * uses libcurl
 */
CURL_EXTERN CURLcode curl_global_init(long flags);

/*
 * NAME curl_global_init_mem()
 *
 * DESCRIPTION
 *
 * curl_global_init() or curl_global_init_mem() should be invoked exactly once
 * for each application that uses libcurl.  This function can be used to
 * initialize libcurl and set user defined memory management callback
 * functions.  Users can implement memory management routines to check for
 * memory leaks, check for mis-use of the curl library etc.  User registered
 * callback routines with be invoked by this library instead of the system
 * memory management routines like malloc, free etc.
 */
CURL_EXTERN CURLcode curl_global_init_mem(long flags,
                                          curl_malloc_callback m,
                                          curl_free_callback f,
                                          curl_realloc_callback r,
                                          curl_strdup_callback s,
                                          curl_calloc_callback c);

/*
 * NAME curl_global_cleanup()
 *
 * DESCRIPTION
 *
 * curl_global_cleanup() should be invoked exactly once for each application
 * that uses libcurl
 */
CURL_EXTERN void curl_global_cleanup(void);

/* linked-list structure for the CURLOPT_QUOTE option (and other) */
struct curl_slist {
  char *data;
  struct curl_slist *next;
};

/*
 * NAME curl_slist_append()
 *
 * DESCRIPTION
 *
 * Appends a string to a linked list. If no list exists, it will be created
 * first. Returns the new list, after appending.
 */
CURL_EXTERN struct curl_slist *curl_slist_append(struct curl_slist *,
                                                 const char *);

/*
 * NAME curl_slist_free_all()
 *
 * DESCRIPTION
 *
 * free a previously built curl_slist.
 */
CURL_EXTERN void curl_slist_free_all(struct curl_slist *);

/*
 * NAME curl_getdate()
 *
 * DESCRIPTION
 *
 * Returns the time, in seconds since 1 Jan 1970 of the time string given in
 * the first argument. The time argument in the second parameter is unused
 * and should be set to NULL.
 */
CURL_EXTERN time_t curl_getdate(const char *p, const time_t *unused);

#define CURLINFO_STRING   0x100000
#define CURLINFO_LONG     0x200000
#define CURLINFO_DOUBLE   0x300000
#define CURLINFO_SLIST    0x400000
#define CURLINFO_MASK     0x0fffff
#define CURLINFO_TYPEMASK 0xf00000

typedef enum {
  CURLINFO_NONE, /* first, never use this */
  CURLINFO_EFFECTIVE_URL    = CURLINFO_STRING + 1,
  CURLINFO_RESPONSE_CODE    = CURLINFO_LONG   + 2,
  CURLINFO_TOTAL_TIME       = CURLINFO_DOUBLE + 3,
  CURLINFO_NAMELOOKUP_TIME  = CURLINFO_DOUBLE + 4,
  CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
  CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
  CURLINFO_SIZE_UPLOAD      = CURLINFO_DOUBLE + 7,
  CURLINFO_SIZE_DOWNLOAD    = CURLINFO_DOUBLE + 8,
  CURLINFO_SPEED_DOWNLOAD   = CURLINFO_DOUBLE + 9,
  CURLINFO_SPEED_UPLOAD     = CURLINFO_DOUBLE + 10,
  CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
  CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
  CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
  CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
  CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
  CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
  CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
  CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
  CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
  CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
  CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
  CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
  CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
  CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
  CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
  CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
  CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
  CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
  CURLINFO_LASTSOCKET       = CURLINFO_LONG   + 29,
  CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
  /* Fill in new entries below here! */

  CURLINFO_LASTONE          = 30
} CURLINFO;

/* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
   CURLINFO_HTTP_CODE */
#define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE

typedef enum {
  CURLCLOSEPOLICY_NONE, /* first, never use this */

  CURLCLOSEPOLICY_OLDEST,
  CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
  CURLCLOSEPOLICY_LEAST_TRAFFIC,
  CURLCLOSEPOLICY_SLOWEST,
  CURLCLOSEPOLICY_CALLBACK,

  CURLCLOSEPOLICY_LAST /* last, never use this */
} curl_closepolicy;

#define CURL_GLOBAL_SSL (1<<0)
#define CURL_GLOBAL_WIN32 (1<<1)
#define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
#define CURL_GLOBAL_NOTHING 0
#define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL


/*****************************************************************************
 * Setup defines, protos etc for the sharing stuff.
 */

/* Different data locks for a single share */
typedef enum {
  CURL_LOCK_DATA_NONE = 0,
  /*  CURL_LOCK_DATA_SHARE is used internaly to say that
   *  the locking is just made to change the internal state of the share
   *  itself.
   */
  CURL_LOCK_DATA_SHARE,
  CURL_LOCK_DATA_COOKIE,
  CURL_LOCK_DATA_DNS,
  CURL_LOCK_DATA_SSL_SESSION,
  CURL_LOCK_DATA_CONNECT,
  CURL_LOCK_DATA_LAST
} curl_lock_data;

/* Different lock access types */
typedef enum {
  CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
  CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
  CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
  CURL_LOCK_ACCESS_LAST        /* never use */
} curl_lock_access;

typedef void (*curl_lock_function)(CURL *handle,
                                   curl_lock_data data,
                                   curl_lock_access locktype,
                                   void *userptr);
typedef void (*curl_unlock_function)(CURL *handle,
                                     curl_lock_data data,
                                     void *userptr);

typedef void CURLSH;

typedef enum {
  CURLSHE_OK,  /* all is fine */
  CURLSHE_BAD_OPTION, /* 1 */
  CURLSHE_IN_USE,     /* 2 */
  CURLSHE_INVALID,    /* 3 */
  CURLSHE_NOMEM,      /* out of memory */
  CURLSHE_LAST /* never use */
} CURLSHcode;

typedef enum {
  CURLSHOPT_NONE,  /* don't use */
  CURLSHOPT_SHARE,   /* specify a data type to share */
  CURLSHOPT_UNSHARE, /* specify shich data type to stop sharing */
  CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
  CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
  CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
                           callback functions */
  CURLSHOPT_LAST  /* never use */
} CURLSHoption;

CURL_EXTERN CURLSH *curl_share_init(void);
CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);
CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *);

/****************************************************************************
 * Structures for querying information about the curl library at runtime.
 */

typedef enum {
  CURLVERSION_FIRST,
  CURLVERSION_SECOND,
  CURLVERSION_THIRD,
  CURLVERSION_FOURTH,
  CURLVERSION_LAST /* never actually use this */
} CURLversion;

/* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
   basicly all programs ever, that want to get version information. It is
   meant to be a built-in version number for what kind of struct the caller
   expects. If the struct ever changes, we redefine the NOW to another enum
   from above. */
#define CURLVERSION_NOW CURLVERSION_FOURTH

typedef struct {
  CURLversion age;          /* age of the returned struct */
  const char *version;      /* LIBCURL_VERSION */
  unsigned int version_num; /* LIBCURL_VERSION_NUM */
  const char *host;         /* OS/host/cpu/machine when configured */
  int features;             /* bitmask, see defines below */
  const char *ssl_version;  /* human readable string */
  long ssl_version_num;     /* not used anymore, always 0 */
  const char *libz_version; /* human readable string */
  /* protocols is terminated by an entry with a NULL protoname */
  const char * const *protocols;

  /* The fields below this were added in CURLVERSION_SECOND */
  const char *ares;
  int ares_num;

  /* This field was added in CURLVERSION_THIRD */
  const char *libidn;

  /* These field were added in CURLVERSION_FOURTH */

  /* Same as '_libiconv_version' if built with HAVE_ICONV */
  int iconv_ver_num;

  const char *libssh_version; /* human readable string */

} curl_version_info_data;

#define CURL_VERSION_IPV6      (1<<0)  /* IPv6-enabled */
#define CURL_VERSION_KERBEROS4 (1<<1)  /* kerberos auth is supported */
#define CURL_VERSION_SSL       (1<<2)  /* SSL options are present */
#define CURL_VERSION_LIBZ      (1<<3)  /* libz features are present */
#define CURL_VERSION_NTLM      (1<<4)  /* NTLM auth is supported */
#define CURL_VERSION_GSSNEGOTIATE (1<<5) /* Negotiate auth support */
#define CURL_VERSION_DEBUG     (1<<6)  /* built with debug capabilities */
#define CURL_VERSION_ASYNCHDNS (1<<7)  /* asynchronous dns resolves */
#define CURL_VERSION_SPNEGO    (1<<8)  /* SPNEGO auth */
#define CURL_VERSION_LARGEFILE (1<<9)  /* supports files bigger than 2GB */
#define CURL_VERSION_IDN       (1<<10) /* International Domain Names support */
#define CURL_VERSION_SSPI      (1<<11) /* SSPI is supported */
#define CURL_VERSION_CONV      (1<<12) /* character conversions are
                                          supported */

/*
 * NAME curl_version_info()
 *
 * DESCRIPTION
 *
 * This function returns a pointer to a static copy of the version info
 * struct. See above.
 */
CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);

/*
 * NAME curl_easy_strerror()
 *
 * DESCRIPTION
 *
 * The curl_easy_strerror function may be used to turn a CURLcode value
 * into the equivalent human readable error string.  This is useful
 * for printing meaningful error messages.
 */
CURL_EXTERN const char *curl_easy_strerror(CURLcode);

/*
 * NAME curl_share_strerror()
 *
 * DESCRIPTION
 *
 * The curl_share_strerror function may be used to turn a CURLSHcode value
 * into the equivalent human readable error string.  This is useful
 * for printing meaningful error messages.
 */
CURL_EXTERN const char *curl_share_strerror(CURLSHcode);

/*
 * NAME curl_easy_pause()
 *
 * DESCRIPTION
 *
 * The curl_easy_pause function pauses or unpauses transfers. Select the new
 * state by setting the bitmask, use the convenience defines below.
 *
 */
CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);

#define CURLPAUSE_RECV      (1<<0)
#define CURLPAUSE_RECV_CONT (0)

#define CURLPAUSE_SEND      (1<<2)
#define CURLPAUSE_SEND_CONT (0)

#define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
#define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)

#ifdef  __cplusplus
}
#endif

/* unfortunately, the easy.h and multi.h include files need options and info
  stuff before they can be included! */
#include "easy.h" /* nothing in curl is fun without the easy stuff */
#include "multi.h"

/* the typechecker doesn't work in C++ (yet) */
#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
    !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
#include "typecheck-gcc.h"
#else
#if defined(__STDC__) && (__STDC__ >= 1)
/* This preprocessor magic that replaces a call with the exact same call is
   only done to make sure application authors pass exactly three arguments
   to these functions. */
#define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
#define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
#endif /* __STDC__ >= 1 */
#endif /* gcc >= 4.3 && !__cplusplus */

#endif /* __CURL_CURL_H */