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56dd2da962
curl/lib/urldata.h
Daniel Stenberg de11f5e53a make the ENGINE depend on the USE_SSLEAY define too
2003-03-19 21:28:39 +00:00

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#ifndef __URLDATA_H
#define __URLDATA_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
/* This file is for lib internal stuff */
#include "setup.h"
#define PORT_FTP 21
#define PORT_TELNET 23
#define PORT_GOPHER 70
#define PORT_HTTP 80
#define PORT_HTTPS 443
#define PORT_DICT 2628
#define PORT_LDAP 389
#define DICT_MATCH "/MATCH:"
#define DICT_MATCH2 "/M:"
#define DICT_MATCH3 "/FIND:"
#define DICT_DEFINE "/DEFINE:"
#define DICT_DEFINE2 "/D:"
#define DICT_DEFINE3 "/LOOKUP:"
#define CURL_DEFAULT_USER "anonymous"
#define CURL_DEFAULT_PASSWORD "curl_by_daniel@haxx.se"
#include "cookie.h"
#include "formdata.h"
#ifdef USE_SSLEAY
/* SSLeay stuff usually in /usr/local/ssl/include */
#ifdef USE_OPENSSL
#include "openssl/rsa.h"
#include "openssl/crypto.h"
#include "openssl/x509.h"
#include "openssl/pem.h"
#include "openssl/ssl.h"
#include "openssl/err.h"
#ifdef HAVE_OPENSSL_ENGINE_H
#include <openssl/engine.h>
#endif
#else
#include "rsa.h"
#include "crypto.h"
#include "x509.h"
#include "pem.h"
#include "ssl.h"
#include "err.h"
#endif
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include "timeval.h"
#include <curl/curl.h>
#include "http_chunks.h" /* for the structs and enum stuff */
#include "hostip.h"
#include "hash.h"
#ifdef HAVE_ZLIB_H
#include <zlib.h> /* for content-encoding 08/28/02 jhrg */
#endif
/* Download buffer size, keep it fairly big for speed reasons */
#define BUFSIZE CURL_MAX_WRITE_SIZE
/* Initial size of the buffer to store headers in, it'll be enlarged in case
of need. */
#define HEADERSIZE 256
/* Just a convenience macro to get the larger value out of two given */
#ifndef MAX
#define MAX(x,y) ((x)>(y)?(x):(y))
#endif
#ifdef KRB4
/* Types needed for krb4-ftp connections */
struct krb4buffer {
void *data;
size_t size;
size_t index;
int eof_flag;
};
enum protection_level {
prot_clear,
prot_safe,
prot_confidential,
prot_private
};
#endif
/* struct for data related to SSL and SSL connections */
struct ssl_connect_data {
bool use; /* use ssl encrypted communications TRUE/FALSE */
#ifdef USE_SSLEAY
/* these ones requires specific SSL-types */
SSL_CTX* ctx;
SSL* handle;
X509* server_cert;
#endif /* USE_SSLEAY */
};
/* information about one single SSL session */
struct curl_ssl_session {
char *name; /* host name for which this ID was used */
void *sessionid; /* as returned from the SSL layer */
long age; /* just a number, the higher the more recent */
unsigned short remote_port; /* remote port to connect to */
};
struct ssl_config_data {
long version; /* what version the client wants to use */
long certverifyresult; /* result from the certificate verification */
long verifypeer; /* set TRUE if this is desired */
long verifyhost; /* 0: no verify
1: check that CN exists
2: CN must match hostname */
char *CApath; /* DOES NOT WORK ON WINDOWS */
char *CAfile; /* cerficate to verify peer against */
char *random_file; /* path to file containing "random" data */
char *egdsocket; /* path to file containing the EGD daemon socket */
char *cipher_list; /* list of ciphers to use */
long numsessions; /* SSL session id cache size */
};
/****************************************************************************
* HTTP unique setup
***************************************************************************/
struct HTTP {
struct FormData *sendit;
int postsize;
char *postdata;
const char *p_pragma; /* Pragma: string */
const char *p_accept; /* Accept: string */
long readbytecount;
long writebytecount;
/* For FORM posting */
struct Form form;
struct Curl_chunker chunk;
struct back {
curl_read_callback fread; /* backup storage for fread pointer */
void *fread_in; /* backup storage for fread_in pointer */
char *postdata;
int postsize;
} backup;
enum {
HTTPSEND_NADA, /* init */
HTTPSEND_REQUEST, /* sending a request */
HTTPSEND_BODY, /* sending body */
HTTPSEND_LAST /* never use this */
} sending;
void *send_buffer; /* used if the request couldn't be sent in one chunk,
points to an allocated send_buffer struct */
};
/****************************************************************************
* FTP unique setup
***************************************************************************/
struct FTP {
long *bytecountp;
char *user; /* user name string */
char *passwd; /* password string */
char *urlpath; /* the originally given path part of the URL */
char *dir; /* decoded directory */
char *file; /* decoded file */
char *entrypath; /* the PWD reply when we logged on */
char *cache; /* data cache between getresponse()-calls */
size_t cache_size; /* size of cache in bytes */
bool dont_check; /* Set to TRUE to prevent the final (post-transfer)
file size and 226/250 status check. It should still
read the line, just ignore the result. */
bool no_transfer; /* nothing was transfered, (possibly because a resumed
transfer already was complete) */
long response_time; /* When no timeout is given, this is the amount of
seconds we await for an FTP response. Initialized
in Curl_ftp_connect() */
};
/****************************************************************************
* FILE unique setup
***************************************************************************/
struct FILE {
int fd; /* open file descriptor to read from! */
};
/*
* Boolean values that concerns this connection.
*/
struct ConnectBits {
bool close; /* if set, we close the connection after this request */
bool reuse; /* if set, this is a re-used connection */
bool chunk; /* if set, this is a chunked transfer-encoding */
bool httpproxy; /* if set, this transfer is done through a http proxy */
bool user_passwd; /* do we use user+password for this connection? */
bool proxy_user_passwd; /* user+password for the proxy? */
bool ipv6_ip; /* we communicate with a remove site specified with pure IPv6
IP address */
bool use_range;
bool rangestringalloc; /* the range string is malloc()'ed */
bool do_more; /* this is set TRUE if the ->curl_do_more() function is
supposed to be called, after ->curl_do() */
bool upload_chunky; /* set TRUE if we are doing chunked transfer-encoding
on upload */
bool getheader; /* TRUE if header parsing is wanted */
bool forbidchunk; /* used only to explicitly forbid chunk-upload for
specific upload buffers. See readmoredata() in
http.c for details. */
bool tcpconnect; /* the tcp stream (or simimlar) is connected, this
is set the first time on the first connect function
call */
};
/*
* This struct is all the previously local variables from Curl_perform() moved
* to struct to allow the function to return and get re-invoked better without
* losing state.
*/
struct Curl_transfer_keeper {
int bytecount; /* total number of bytes read */
int writebytecount; /* number of bytes written */
long contentlength; /* size of incoming data */
struct timeval start; /* transfer started at this time */
struct timeval now; /* current time */
bool header; /* incoming data has HTTP header */
enum {
HEADER_NORMAL, /* no bad header at all */
HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest is
normal data */
HEADER_ALLBAD /* all was believed to be header */
} badheader; /* the header was deemed bad and will be
written as body */
int headerline; /* counts header lines to better track the
first one */
char *hbufp; /* points at *end* of header line */
int hbuflen;
char *str; /* within buf */
char *str_start; /* within buf */
char *end_ptr; /* within buf */
char *p; /* within headerbuff */
bool content_range; /* set TRUE if Content-Range: was found */
int offset; /* possible resume offset read from the
Content-Range: header */
int httpcode; /* error code from the 'HTTP/1.? XXX' line */
int httpversion; /* the HTTP version*10 */
struct timeval start100; /* time stamp to wait for the 100 code from */
bool write_after_100_header; /* TRUE = we enable the write after we
received a 100-continue/timeout or
FALSE = directly */
bool wait100_after_headers; /* TRUE = after the request-headers have been
sent off properly, we go into the wait100
state, FALSE = don't */
int content_encoding; /* What content encoding. sec 3.5, RFC2616. */
#define IDENTITY 0 /* No encoding */
#define DEFLATE 1 /* zlib delfate [RFC 1950 & 1951] */
#define GZIP 2 /* gzip algorithm [RFC 1952] */
#define COMPRESS 3 /* Not handled, added for completeness */
#ifdef HAVE_LIBZ
bool zlib_init; /* True if zlib already initialized;
undefined if Content-Encdoing header. */
z_stream z; /* State structure for zlib. */
#endif
/* for the low speed checks: */
time_t timeofdoc;
long bodywrites;
int writetype;
char *buf;
char *uploadbuf;
int maxfd;
/* pointers to the actual descriptors we check */
fd_set *readfdp;
fd_set *writefdp;
/* the file descriptors to play with */
fd_set readfd;
fd_set writefd;
fd_set rkeepfd;
fd_set wkeepfd;
int keepon;
bool upload_done; /* set to TRUE when doing chunked transfer-encoding upload
and we're uploading the last chunk */
};
/*
* The connectdata struct contains all fields and variables that should be
* unique for an entire connection.
*/
struct connectdata {
/**** Fields set when inited and not modified again */
struct SessionHandle *data; /* link to the root CURL struct */
int connectindex; /* what index in the connects index this particular
struct has */
long protocol; /* PROT_* flags concerning the protocol set */
#define PROT_MISSING (1<<0)
#define PROT_GOPHER (1<<1)
#define PROT_HTTP (1<<2)
#define PROT_HTTPS (1<<3)
#define PROT_FTP (1<<4)
#define PROT_TELNET (1<<5)
#define PROT_DICT (1<<6)
#define PROT_LDAP (1<<7)
#define PROT_FILE (1<<8)
#define PROT_FTPS (1<<9)
#define PROT_SSL (1<<10) /* protocol requires SSL */
/* the particular host we use, in two different ways */
struct Curl_dns_entry *connect_addr;
#ifdef ENABLE_IPV6
struct addrinfo *serv_addr;
#else
struct sockaddr_in serv_addr;
#endif
char protostr[64]; /* store the protocol string in this buffer */
char gname[513]; /* store the hostname in this buffer */
char *name; /* host name pointer to fool around with */
char *path; /* allocated buffer to store the URL's path part in */
char *hostname; /* hostname to connect, as parsed from url */
long port; /* which port to use locally */
unsigned short remote_port; /* what remote port to connect to,
not the proxy port! */
char *ppath;
long bytecount;
long headerbytecount; /* only count received headers */
char *range; /* range, if used. See README for detailed specification on
this syntax. */
ssize_t resume_from; /* continue [ftp] transfer from here */
char *proxyhost; /* name of the http proxy host */
struct timeval now; /* "current" time */
struct timeval created; /* creation time */
int firstsocket; /* the main socket to use */
int secondarysocket; /* for i.e ftp transfers */
long maxdownload; /* in bytes, the maximum amount of data to fetch, 0
means unlimited */
struct ssl_connect_data ssl; /* this is for ssl-stuff */
struct ConnectBits bits; /* various state-flags for this connection */
/* These two functions MUST be set by the curl_connect() function to be
be protocol dependent */
CURLcode (*curl_do)(struct connectdata *connect);
CURLcode (*curl_done)(struct connectdata *connect);
/* If the curl_do() function is better made in two halves, this
* curl_do_more() function will be called afterwards, if set. For example
* for doing the FTP stuff after the PASV/PORT command.
*/
CURLcode (*curl_do_more)(struct connectdata *connect);
/* This function *MAY* be set to a protocol-dependent function that is run
* after the connect() and everything is done, as a step in the connection.
*/
CURLcode (*curl_connect)(struct connectdata *connect);
/* This function *MAY* be set to a protocol-dependent function that is run
* by the curl_disconnect(), as a step in the disconnection.
*/
CURLcode (*curl_disconnect)(struct connectdata *connect);
/* This function *MAY* be set to a protocol-dependent function that is run
* in the curl_close() function if protocol-specific cleanups are required.
*/
CURLcode (*curl_close)(struct connectdata *connect);
/**** curl_get() phase fields */
/* READ stuff */
int sockfd; /* socket to read from or -1 */
int size; /* -1 if unknown at this point */
long *bytecountp; /* return number of bytes read or NULL */
/* WRITE stuff */
int writesockfd; /* socket to write to, it may very well be
the same we read from. -1 disables */
long *writebytecountp; /* return number of bytes written or NULL */
/** Dynamicly allocated strings, may need to be freed before this **/
/** struct is killed. **/
struct dynamically_allocated_data {
char *proxyuserpwd; /* free later if not NULL! */
char *uagent; /* free later if not NULL! */
char *accept_encoding; /* free later if not NULL! 08/28/02 jhrg */
char *userpwd; /* free later if not NULL! */
char *rangeline; /* free later if not NULL! */
char *ref; /* free later if not NULL! */
char *cookie; /* free later if not NULL! */
char *host; /* free later if not NULL */
} allocptr;
char *newurl; /* This can only be set if a Location: was in the
document headers */
#ifdef KRB4
enum protection_level command_prot;
enum protection_level data_prot;
enum protection_level request_data_prot;
size_t buffer_size;
struct krb4buffer in_buffer, out_buffer;
int sec_complete;
void *app_data;
struct Curl_sec_client_mech *mech;
struct sockaddr_in local_addr;
#endif
/*************** Request - specific items ************/
/* previously this was in the urldata struct */
union {
struct HTTP *http;
struct HTTP *gopher; /* alias, just for the sake of being more readable */
struct HTTP *https; /* alias, just for the sake of being more readable */
struct FTP *ftp;
struct FILE *file;
void *telnet; /* private for telnet.c-eyes only */
#if 0 /* no need for special ones for these: */
struct LDAP *ldap;
struct DICT *dict;
#endif
void *generic;
} proto;
/* This struct is inited when needed */
struct Curl_transfer_keeper keep;
/* 'upload_present' is used to keep a byte counter of how much data there is
still left in the buffer, aimed for upload. */
int upload_present;
/* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
buffer, so the next read should read from where this pointer points to,
and the 'upload_present' contains the number of bytes available at this
position */
char *upload_fromhere;
curl_read_callback fread; /* function that reads the input */
void *fread_in; /* pointer to pass to the fread() above */
};
/* The end of connectdata. 08/27/02 jhrg */
/*
* Struct to keep statistical and informational data.
*/
struct PureInfo {
int httpcode;
int httpversion;
long filetime; /* If requested, this is might get set. Set to -1 if
the time was unretrievable */
long header_size; /* size of read header(s) in bytes */
long request_size; /* the amount of bytes sent in the request(s) */
char *contenttype; /* the content type of the object */
};
struct Progress {
long lastshow; /* time() of the last displayed progress meter or NULL to
force redraw at next call */
double size_dl;
double size_ul;
double downloaded;
double uploaded;
double current_speed; /* uses the currently fastest transfer */
bool callback; /* set when progress callback is used */
int width; /* screen width at download start */
int flags; /* see progress.h */
double timespent;
double dlspeed;
double ulspeed;
double t_nslookup;
double t_connect;
double t_pretransfer;
double t_starttransfer;
double t_redirect;
struct timeval start;
struct timeval t_startsingle;
#define CURR_TIME (5+1) /* 6 entries for 5 seconds */
double speeder[ CURR_TIME ];
struct timeval speeder_time[ CURR_TIME ];
int speeder_c;
};
typedef enum {
HTTPREQ_NONE, /* first in list */
HTTPREQ_GET,
HTTPREQ_POST,
HTTPREQ_POST_FORM, /* we make a difference internally */
HTTPREQ_PUT,
HTTPREQ_CUSTOM,
HTTPREQ_LAST /* last in list */
} Curl_HttpReq;
/*
* Values that are generated, temporary or calculated internally for a
* "session handle" must be defined within the 'struct urlstate'. This struct
* will be used within the SessionHandle struct. When the 'SessionHandle'
* struct is cloned, this data MUST NOT be copied.
*
* Remember that any "state" information goes globally for the curl handle.
* Session-data MUST be put in the connectdata struct and here. */
#define MAX_CURL_USER_LENGTH 256
#define MAX_CURL_PASSWORD_LENGTH 256
struct UrlState {
enum {
Curl_if_none,
Curl_if_easy,
Curl_if_multi
} used_interface;
/* buffers to store authentication data in, as parsed from input options */
char user[MAX_CURL_USER_LENGTH];
char passwd[MAX_CURL_PASSWORD_LENGTH];
char proxyuser[MAX_CURL_USER_LENGTH];
char proxypasswd[MAX_CURL_PASSWORD_LENGTH];
bool passwdgiven; /* set TRUE if an application-provided password has been
set */
struct timeval keeps_speed; /* for the progress meter really */
/* 'connects' will be an allocated array with pointers. If the pointer is
set, it holds an allocated connection. */
struct connectdata **connects;
long numconnects; /* size of the 'connects' array */
char *headerbuff; /* allocated buffer to store headers in */
int headersize; /* size of the allocation */
char buffer[BUFSIZE+1]; /* download buffer */
char uploadbuffer[BUFSIZE+1]; /* upload buffer */
double current_speed; /* the ProgressShow() funcion sets this */
bool this_is_a_follow; /* this is a followed Location: request */
char *auth_host; /* if set, this should be the host name that we will
sent authorization to, no else. Used to make Location:
following not keep sending user+password... This is
strdup() data.
*/
struct curl_ssl_session *session; /* array of 'numsessions' size */
long sessionage; /* number of the most recent session */
char *scratch; /* huge buffer[BUFSIZE*2] when doing upload CRLF replacing */
bool errorbuf; /* Set to TRUE if the error buffer is already filled in.
This must be set to FALSE every time _easy_perform() is
called. */
#ifdef HAVE_SIGNAL
/* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
void (*prev_signal)(int sig);
#endif
bool allow_port; /* Is set.use_port allowed to take effect or not. This
is always set TRUE when curl_easy_perform() is called. */
};
/*
* This 'DynamicStatic' struct defines dynamic states that actually change
* values in the 'UserDefined' area, which MUST be taken into consideration
* if the UserDefined struct is cloned or similar. You can probably just
* copy these, but each one indicate a special action on other data.
*/
struct DynamicStatic {
char *url; /* work URL, copied from UserDefined */
bool url_alloc; /* URL string is malloc()'ed */
char *proxy; /* work proxy, copied from UserDefined */
bool proxy_alloc; /* http proxy string is malloc()'ed */
char *referer; /* referer string */
bool referer_alloc; /* referer sting is malloc()ed */
struct curl_slist *cookielist; /* list of cookie files set by
curl_easy_setopt(COOKIEFILE) calls */
};
/*
* This 'UserDefined' struct must only contain data that is set once to go
* for many (perhaps) independent connections. Values that are generated or
* calculated internally for the "session handle" MUST be defined within the
* 'struct urlstate' instead. The only exceptions MUST note the changes in
* the 'DynamicStatic' struct.
*/
struct UserDefined {
FILE *err; /* the stderr user data goes here */
void *debugdata; /* the data that will be passed to fdebug */
char *errorbuffer; /* store failure messages in here */
char *proxyuserpwd; /* Proxy <user:password>, if used */
long proxyport; /* If non-zero, use this port number by default. If the
proxy string features a ":[port]" that one will override
this. */
void *out; /* the fetched file goes here */
void *in; /* the uploaded file is read from here */
void *writeheader; /* write the header to this is non-NULL */
char *set_url; /* what original URL to work on */
char *set_proxy; /* proxy to use */
long use_port; /* which port to use (when not using default) */
char *userpwd; /* <user:password>, if used */
char *set_range; /* range, if used. See README for detailed specification
on this syntax. */
long followlocation; /* as in HTTP Location: */
long maxredirs; /* maximum no. of http(s) redirects to follow */
char *set_referer; /* custom string */
bool free_referer; /* set TRUE if 'referer' points to a string we
allocated */
char *useragent; /* User-Agent string */
char *encoding; /* Accept-Encoding string */
char *postfields; /* if POST, set the fields' values here */
size_t postfieldsize; /* if POST, this might have a size to use instead of
strlen(), and then the data *may* be binary (contain
zero bytes) */
char *ftpport; /* port to send with the FTP PORT command */
char *device; /* network interface to use */
curl_write_callback fwrite; /* function that stores the output */
curl_write_callback fwrite_header; /* function that stores headers */
curl_read_callback fread; /* function that reads the input */
curl_progress_callback fprogress; /* function for progress information */
curl_debug_callback fdebug; /* function that write informational data */
void *progress_client; /* pointer to pass to the progress callback */
curl_passwd_callback fpasswd; /* call for password */
void *passwd_client; /* pass to the passwd callback */
long timeout; /* in seconds, 0 means no timeout */
long connecttimeout; /* in seconds, 0 means no timeout */
long infilesize; /* size of file to upload, -1 means unknown */
long low_speed_limit; /* bytes/second */
long low_speed_time; /* number of seconds */
int set_resume_from; /* continue [ftp] transfer from here */
char *cookie; /* HTTP cookie string to send */
struct curl_slist *headers; /* linked list of extra headers */
struct HttpPost *httppost; /* linked list of POST data */
char *cert; /* certificate */
char *cert_type; /* format for certificate (default: PEM) */
char *key; /* private key */
char *key_type; /* format for private key (default: PEM) */
char *key_passwd; /* plain text private key password */
char *crypto_engine; /* name of the crypto engine to use */
char *cookiejar; /* dump all cookies to this file */
bool cookiesession; /* new cookie session? */
bool crlf; /* convert crlf on ftp upload(?) */
struct curl_slist *quote; /* after connection is established */
struct curl_slist *postquote; /* after the transfer */
struct curl_slist *prequote; /* before the transfer, after type (Wesley Laxton)*/
struct curl_slist *telnet_options; /* linked list of telnet options */
curl_TimeCond timecondition; /* kind of time/date comparison */
time_t timevalue; /* what time to compare with */
curl_closepolicy closepolicy; /* connection cache close concept */
Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
char *customrequest; /* HTTP/FTP request to use */
long httpversion; /* when non-zero, a specific HTTP version requested to
be used in the library's request(s) */
char *auth_host; /* if set, this is the allocated string to the host name
* to which to send the authorization data to, and no other
* host (which location-following otherwise could lead to)
*/
char *krb4_level; /* what security level */
struct ssl_config_data ssl; /* user defined SSL stuff */
curl_proxytype proxytype; /* what kind of proxy that is in use */
int dns_cache_timeout; /* DNS cache timeout */
long buffer_size; /* size of receive buffer to use */
char *private; /* Private data */
struct curl_slist *http200aliases; /* linked list of aliases for http200 */
/* Here follows boolean settings that define how to behave during
this session. They are STATIC, set by libcurl users or at least initially
and they don't change during operations. */
bool get_filetime;
bool tunnel_thru_httpproxy;
bool ftp_append;
bool ftp_ascii;
bool ftp_list_only;
bool ftp_use_port;
bool hide_progress;
bool http_fail_on_error;
bool http_follow_location;
bool include_header;
#define http_include_header include_header /* former name */
bool http_set_referer;
bool http_auto_referer; /* set "correct" referer when following location: */
bool no_body;
bool set_port;
bool upload;
enum CURL_NETRC_OPTION
use_netrc; /* defined in include/curl.h */
bool verbose;
bool krb4; /* kerberos4 connection requested */
bool reuse_forbid; /* forbidden to be reused, close after use */
bool reuse_fresh; /* do not re-use an existing connection */
bool expect100header; /* TRUE if we added Expect: 100-continue */
bool ftp_use_epsv; /* if EPSV is to be attempted or not */
bool no_signal; /* do not use any signal/alarm handler */
bool global_dns_cache;
};
/*
* In August 2001, this struct was redesigned and is since stricter than
* before. The 'connectdata' struct MUST have all the connection oriented
* stuff as we may now have several simultaneous connections and connection
* structs in memory.
*
* From now on, the 'SessionHandle' must only contain data that is set once to
* go for many (perhaps) independent connections. Values that are generated or
* calculated internally for the "session handle" must be defined within the
* 'struct urlstate' instead. */
struct SessionHandle {
curl_hash *hostcache;
struct Curl_share *share; /* Share, handles global variable mutexing */
struct UserDefined set; /* values set by the libcurl user */
struct DynamicStatic change; /* possibly modified userdefined data */
struct CookieInfo *cookies; /* the cookies, read from files and servers */
struct Progress progress; /* for all the progress meter data */
struct UrlState state; /* struct for fields used for state info and
other dynamic purposes */
struct PureInfo info; /* stats, reports and info data */
#if defined(USE_SSLEAY) && defined(HAVE_OPENSSL_ENGINE_H)
ENGINE* engine;
#endif /* USE_SSLEAY */
};
#define LIBCURL_NAME "libcurl"
#endif
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