3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at http://curl.haxx.se/docs/copyright.html.
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
25 /* This file is for lib internal stuff */
31 #define PORT_TELNET 23
33 #define PORT_HTTPS 443
34 #define PORT_DICT 2628
36 #define PORT_LDAPS 636
40 #define PORT_IMAPS 993
42 #define PORT_POP3S 995
44 #define PORT_SMTPS 465 /* sometimes called SSMTP */
46 #define PORT_RTMP 1935
47 #define PORT_RTMPT PORT_HTTP
48 #define PORT_RTMPS PORT_HTTPS
49 #define PORT_GOPHER 70
51 #define DICT_MATCH "/MATCH:"
52 #define DICT_MATCH2 "/M:"
53 #define DICT_MATCH3 "/FIND:"
54 #define DICT_DEFINE "/DEFINE:"
55 #define DICT_DEFINE2 "/D:"
56 #define DICT_DEFINE3 "/LOOKUP:"
58 #define CURL_DEFAULT_USER "anonymous"
59 #define CURL_DEFAULT_PASSWORD "ftp@example.com"
61 /* length of longest IPv6 address string including the trailing null */
62 #define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
64 /* Default FTP/IMAP etc response timeout in milliseconds.
65 Symbian OS panics when given a timeout much greater than 1/2 hour.
67 #define RESP_TIMEOUT (1800*1000)
74 #include "openssl/rsa.h"
75 #include "openssl/crypto.h"
76 #include "openssl/x509.h"
77 #include "openssl/pem.h"
78 #include "openssl/ssl.h"
79 #include "openssl/err.h"
80 #ifdef HAVE_OPENSSL_ENGINE_H
81 #include <openssl/engine.h>
83 #ifdef HAVE_OPENSSL_PKCS12_H
84 #include <openssl/pkcs12.h>
86 #else /* SSLeay-style includes */
93 #ifdef HAVE_OPENSSL_ENGINE_H
96 #ifdef HAVE_OPENSSL_PKCS12_H
99 #endif /* USE_OPENSSL */
101 #error Configuration error; cannot use GnuTLS *and* OpenSSL.
103 #endif /* USE_SSLEAY */
106 #include <gnutls/gnutls.h>
110 #include <polarssl/havege.h>
111 #include <polarssl/ssl.h>
123 #ifdef HAVE_NETINET_IN_H
124 #include <netinet/in.h>
130 #include <zlib.h> /* for content-encoding */
132 /* zlib pollutes the namespace with this definition */
138 # if defined(CURL_STATICLIB) && !defined(CARES_STATICLIB) && \
139 (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__))
140 # define CARES_STATICLIB
145 #include <curl/curl.h>
147 #include "http_chunks.h" /* for the structs and enum stuff */
160 #include "wildcard.h"
165 # elif defined HAVE_GSSMIT
166 # include <gssapi/gssapi.h>
167 # include <gssapi/gssapi_generic.h>
173 #ifdef HAVE_LIBSSH2_H
175 #include <libssh2_sftp.h>
176 #endif /* HAVE_LIBSSH2_H */
178 /* Download buffer size, keep it fairly big for speed reasons */
180 #define BUFSIZE CURL_MAX_WRITE_SIZE
182 /* Initial size of the buffer to store headers in, it'll be enlarged in case
184 #define HEADERSIZE 256
186 #define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
188 /* Some convenience macros to get the larger/smaller value out of two given.
189 We prefix with CURL to prevent name collisions. */
190 #define CURLMAX(x,y) ((x)>(y)?(x):(y))
191 #define CURLMIN(x,y) ((x)<(y)?(x):(y))
194 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
195 /* Types needed for krb4/5-ftp connections */
203 enum protection_level {
204 PROT_NONE, /* first in list */
210 PROT_LAST /* last in list */
214 /* enum for the nonblocking SSL connection state machine */
218 ssl_connect_2_reading,
219 ssl_connect_2_writing,
226 ssl_connection_negotiating,
227 ssl_connection_complete
228 } ssl_connection_state;
230 /* struct for data related to each SSL connection */
231 struct ssl_connect_data {
232 /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm
233 but at least asked to or meaning to use it. See 'state' for the exact
234 current state of the connection. */
236 ssl_connection_state state;
238 /* these ones requires specific SSL-types */
242 ssl_connect_state connecting_state;
243 #endif /* USE_SSLEAY */
245 gnutls_session session;
246 gnutls_certificate_credentials cred;
247 ssl_connect_state connecting_state;
248 #endif /* USE_GNUTLS */
258 #endif /* USE_POLARSSL */
261 char *client_nickname;
262 struct SessionHandle *data;
263 #ifdef HAVE_PK11_CREATEGENERICOBJECT
264 PK11GenericObject *key;
265 PK11GenericObject *cacert[2];
270 #endif /* USE_QSOSSL */
273 struct ssl_config_data {
274 long version; /* what version the client wants to use */
275 long certverifyresult; /* result from the certificate verification */
276 long verifypeer; /* set TRUE if this is desired */
277 long verifyhost; /* 0: no verify
278 1: check that CN exists
279 2: CN must match hostname */
280 char *CApath; /* certificate dir (doesn't work on windows) */
281 char *CAfile; /* certificate to verify peer against */
282 const char *CRLfile; /* CRL to check certificate revocation */
283 const char *issuercert;/* optional issuer certificate filename */
284 char *random_file; /* path to file containing "random" data */
285 char *egdsocket; /* path to file containing the EGD daemon socket */
286 char *cipher_list; /* list of ciphers to use */
287 long numsessions; /* SSL session id cache size */
288 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
289 void *fsslctxp; /* parameter for call back */
290 bool sessionid; /* cache session IDs or not */
291 bool certinfo; /* gather lots of certificate info */
294 /* information stored about one single SSL session */
295 struct curl_ssl_session {
296 char *name; /* host name for which this ID was used */
297 void *sessionid; /* as returned from the SSL layer */
298 size_t idsize; /* if known, otherwise 0 */
299 long age; /* just a number, the higher the more recent */
300 unsigned short remote_port; /* remote port to connect to */
301 struct ssl_config_data ssl_config; /* setup for this session */
304 /* Struct used for Digest challenge-response authentication */
310 bool stale; /* set true for re-negotiation */
314 int nc; /* nounce count */
325 #ifdef USE_WINDOWS_SSPI
326 #include "curl_sspi.h"
329 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
333 /* Struct used for NTLM challenge-response authentication */
336 #ifdef USE_WINDOWS_SSPI
339 SEC_WINNT_AUTH_IDENTITY identity;
340 SEC_WINNT_AUTH_IDENTITY *p_identity;
346 unsigned char nonce[8];
351 struct negotiatedata {
352 /* when doing Negotiate we first need to receive an auth token and then we
353 need to send our header */
354 enum { GSS_AUTHNONE, GSS_AUTHRECV, GSS_AUTHSENT } state;
355 bool gss; /* Whether we're processing GSS-Negotiate or Negotiate */
356 const char* protocol; /* "GSS-Negotiate" or "Negotiate" */
358 gss_ctx_id_t context;
359 gss_name_t server_name;
360 gss_buffer_desc output_token;
366 * Boolean values that concerns this connection.
369 bool close; /* if set, we close the connection after this request */
370 bool reuse; /* if set, this is a re-used connection */
371 bool proxy; /* if set, this transfer is done through a proxy - any type */
372 bool httpproxy; /* if set, this transfer is done through a http proxy */
373 bool user_passwd; /* do we use user+password for this connection? */
374 bool proxy_user_passwd; /* user+password for the proxy? */
375 bool ipv6_ip; /* we communicate with a remote site specified with pure IPv6
377 bool ipv6; /* we communicate with a site using an IPv6 address */
379 bool do_more; /* this is set TRUE if the ->curl_do_more() function is
380 supposed to be called, after ->curl_do() */
382 bool tcpconnect; /* the TCP layer (or similar) is connected, this is set
383 the first time on the first connect function call */
384 bool protoconnstart;/* the protocol layer has STARTED its operation after
385 the TCP layer connect */
387 bool retry; /* this connection is about to get closed and then
388 re-attempted at another connection. */
389 bool tunnel_proxy; /* if CONNECT is used to "tunnel" through the proxy.
390 This is implicit when SSL-protocols are used through
391 proxies, but can also be enabled explicitly by
393 bool tunnel_connecting; /* TRUE while we're still waiting for a proxy CONNECT
395 bool authneg; /* TRUE when the auth phase has started, which means
396 that we are creating a request with an auth header,
397 but it is not the final request in the auth
399 bool rewindaftersend;/* TRUE when the sending couldn't be stopped even
400 though it will be discarded. When the whole send
401 operation is done, we must call the data rewind
403 bool ftp_use_epsv; /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
404 EPSV doesn't work we disable it for the forthcoming
407 bool ftp_use_eprt; /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
408 EPRT doesn't work we disable it for the forthcoming
410 bool netrc; /* name+password provided by netrc */
411 bool userpwd_in_url; /* name+password found in url */
413 bool done; /* set to FALSE when Curl_do() is called and set to TRUE
414 when Curl_done() is called, to prevent Curl_done() to
415 get invoked twice when the multi interface is
417 bool stream_was_rewound; /* Indicates that the stream was rewound after a
418 request read past the end of its response byte
420 bool proxy_connect_closed; /* set true if a proxy disconnected the
421 connection in a CONNECT request with auth, so
422 that libcurl should reconnect and continue. */
423 bool bound; /* set true if bind() has already been done on this socket/
425 bool type_set; /* type= was used in the URL */
429 char *rawalloc; /* allocated "raw" version of the name */
430 char *encalloc; /* allocated IDN-encoded version of the name */
431 char *name; /* name to use internally, might be encoded, might be raw */
432 const char *dispname; /* name to display, as 'name' might be encoded */
436 * Flags on the keepon member of the Curl_transfer_keeper
440 #define KEEP_RECV (1<<0) /* there is or may be data to read */
441 #define KEEP_SEND (1<<1) /* there is or may be data to write */
442 #define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
443 might still be data to read */
444 #define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
445 might still be data to write */
446 #define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
447 #define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
449 #define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE)
450 #define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE)
455 ZLIB_UNINIT, /* uninitialized */
456 ZLIB_INIT, /* initialized */
457 ZLIB_GZIP_HEADER, /* reading gzip header */
458 ZLIB_GZIP_INFLATING, /* inflating gzip stream */
459 ZLIB_INIT_GZIP /* initialized in transparent gzip mode */
463 #ifdef CURLRES_ASYNCH
467 struct Curl_dns_entry *dns;
468 bool done; /* set TRUE when the lookup is complete */
469 int status; /* if done is TRUE, this is the status from the callback */
470 void *os_specific; /* 'struct thread_data' for Windows */
474 #define FIRSTSOCKET 0
475 #define SECONDARYSOCKET 1
477 /* These function pointer types are here only to allow easier typecasting
478 within the source when we need to cast between data pointers (such as NULL)
479 and function pointers. */
480 typedef CURLcode (*Curl_do_more_func)(struct connectdata *);
481 typedef CURLcode (*Curl_done_func)(struct connectdata *, CURLcode, bool);
485 EXP100_SEND_DATA, /* enough waiting, just send the body now */
486 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */
487 EXP100_SENDING_REQUEST, /* still sending the request but will wait for
488 the 100 header once done with the request */
489 EXP100_FAILED /* used on 417 Expectation Failed */
493 * Request specific data in the easy handle (SessionHandle). Previously,
494 * these members were on the connectdata struct but since a conn struct may
495 * now be shared between different SessionHandles, we store connection-specific
496 * data here. This struct only keeps stuff that's interesting for *this*
497 * request, as it will be cleared between multiple ones
499 struct SingleRequest {
500 curl_off_t size; /* -1 if unknown at this point */
501 curl_off_t *bytecountp; /* return number of bytes read or NULL */
503 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch,
504 -1 means unlimited */
505 curl_off_t *writebytecountp; /* return number of bytes written or NULL */
507 curl_off_t bytecount; /* total number of bytes read */
508 curl_off_t writebytecount; /* number of bytes written */
510 long headerbytecount; /* only count received headers */
511 long deductheadercount; /* this amount of bytes doesn't count when we check
512 if anything has been transfered at the end of a
513 connection. We use this counter to make only a
514 100 reply (without a following second response
515 code) result in a CURLE_GOT_NOTHING error code */
517 struct timeval start; /* transfer started at this time */
518 struct timeval now; /* current time */
519 bool header; /* incoming data has HTTP header */
521 HEADER_NORMAL, /* no bad header at all */
522 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
524 HEADER_ALLBAD /* all was believed to be header */
525 } badheader; /* the header was deemed bad and will be
527 int headerline; /* counts header lines to better track the
529 char *hbufp; /* points at *end* of header line */
531 char *str; /* within buf */
532 char *str_start; /* within buf */
533 char *end_ptr; /* within buf */
534 char *p; /* within headerbuff */
535 bool content_range; /* set TRUE if Content-Range: was found */
536 curl_off_t offset; /* possible resume offset read from the
537 Content-Range: header */
538 int httpcode; /* error code from the 'HTTP/1.? XXX' or
539 'RTSP/1.? XXX' line */
540 struct timeval start100; /* time stamp to wait for the 100 code from */
541 enum expect100 exp100; /* expect 100 continue state */
543 int content_encoding; /* What content encoding. sec 3.5, RFC2616. */
545 #define IDENTITY 0 /* No encoding */
546 #define DEFLATE 1 /* zlib deflate [RFC 1950 & 1951] */
547 #define GZIP 2 /* gzip algorithm [RFC 1952] */
548 #define COMPRESS 3 /* Not handled, added for completeness */
551 zlibInitState zlib_init; /* possible zlib init state;
552 undefined if Content-Encoding header. */
553 z_stream z; /* State structure for zlib. */
565 bool upload_done; /* set to TRUE when doing chunked transfer-encoding upload
566 and we're uploading the last chunk */
568 bool ignorebody; /* we read a response-body but we ignore it! */
569 bool ignorecl; /* This HTTP response has no body so we ignore the Content-
572 char *location; /* This points to an allocated version of the Location:
574 char *newurl; /* Set to the new URL to use when a redirect or a retry is
577 /* 'upload_present' is used to keep a byte counter of how much data there is
578 still left in the buffer, aimed for upload. */
579 ssize_t upload_present;
581 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
582 buffer, so the next read should read from where this pointer points to,
583 and the 'upload_present' contains the number of bytes available at this
585 char *upload_fromhere;
587 bool chunk; /* if set, this is a chunked transfer-encoding */
588 bool upload_chunky; /* set TRUE if we are doing chunked transfer-encoding
590 bool getheader; /* TRUE if header parsing is wanted */
592 bool forbidchunk; /* used only to explicitly forbid chunk-upload for
593 specific upload buffers. See readmoredata() in
594 http.c for details. */
598 * Specific protocol handler.
601 struct Curl_handler {
602 const char * scheme; /* URL scheme name. */
604 /* Complement to setup_connection_internals(). */
605 CURLcode (*setup_connection)(struct connectdata *);
607 /* These two functions MUST be set to be protocol dependent */
608 CURLcode (*do_it)(struct connectdata *, bool *done);
611 /* If the curl_do() function is better made in two halves, this
612 * curl_do_more() function will be called afterwards, if set. For example
613 * for doing the FTP stuff after the PASV/PORT command.
615 Curl_do_more_func do_more;
617 /* This function *MAY* be set to a protocol-dependent function that is run
618 * after the connect() and everything is done, as a step in the connection.
619 * The 'done' pointer points to a bool that should be set to TRUE if the
620 * function completes before return. If it doesn't complete, the caller
621 * should call the curl_connecting() function until it is.
623 CURLcode (*connect_it)(struct connectdata *, bool *done);
625 /* See above. Currently only used for FTP. */
626 CURLcode (*connecting)(struct connectdata *, bool *done);
627 CURLcode (*doing)(struct connectdata *, bool *done);
629 /* Called from the multi interface during the PROTOCONNECT phase, and it
630 should then return a proper fd set */
631 int (*proto_getsock)(struct connectdata *conn,
632 curl_socket_t *socks,
635 /* Called from the multi interface during the DOING phase, and it should
636 then return a proper fd set */
637 int (*doing_getsock)(struct connectdata *conn,
638 curl_socket_t *socks,
641 /* Called from the multi interface during the DO_DONE, PERFORM and
642 WAITPERFORM phases, and it should then return a proper fd set. Not setting
643 this will make libcurl use the generic default one. */
644 int (*perform_getsock)(const struct connectdata *conn,
645 curl_socket_t *socks,
648 /* This function *MAY* be set to a protocol-dependent function that is run
649 * by the curl_disconnect(), as a step in the disconnection. If the handler
650 * is called because the connection has been considered dead, dead_connection
653 CURLcode (*disconnect)(struct connectdata *, bool dead_connection);
655 long defport; /* Default port. */
656 long protocol; /* PROT_* flags concerning the protocol set */
659 /* return the count of bytes sent, or -1 on error */
660 typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */
661 int sockindex, /* socketindex */
662 const void *buf, /* data to write */
663 size_t len, /* max amount to write */
664 CURLcode *err); /* error to return */
666 /* return the count of bytes read, or -1 on error */
667 typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */
668 int sockindex, /* socketindex */
669 char *buf, /* store data here */
670 size_t len, /* max amount to read */
671 CURLcode *err); /* error to return */
674 * The connectdata struct contains all fields and variables that should be
675 * unique for an entire connection.
678 /* 'data' is the CURRENT SessionHandle using this connection -- take great
679 caution that this might very well vary between different times this
680 connection is used! */
681 struct SessionHandle *data;
683 /* chunk is for HTTP chunked encoding, but is in the general connectdata
684 struct only because we can do just about any protocol through a HTTP proxy
685 and a HTTP proxy may in fact respond using chunked encoding */
686 struct Curl_chunker chunk;
688 bool inuse; /* This is a marker for the connection cache logic. If this is
689 TRUE this handle is being used by an easy handle and cannot
690 be used by any other easy handle without careful
691 consideration (== only for pipelining). */
693 /**** Fields set when inited and not modified again */
694 long connectindex; /* what index in the connection cache connects index this
695 particular struct has */
696 long protocol; /* PROT_* flags concerning the protocol set */
697 #define PROT_HTTP CURLPROTO_HTTP
698 #define PROT_HTTPS CURLPROTO_HTTPS
699 #define PROT_FTP CURLPROTO_FTP
700 #define PROT_TELNET CURLPROTO_TELNET
701 #define PROT_DICT CURLPROTO_DICT
702 #define PROT_LDAP CURLPROTO_LDAP
703 #define PROT_FILE CURLPROTO_FILE
704 #define PROT_FTPS CURLPROTO_FTPS
705 #define PROT_TFTP CURLPROTO_TFTP
706 #define PROT_SCP CURLPROTO_SCP
707 #define PROT_SFTP CURLPROTO_SFTP
708 #define PROT_IMAP CURLPROTO_IMAP
709 #define PROT_IMAPS CURLPROTO_IMAPS
710 #define PROT_POP3 CURLPROTO_POP3
711 #define PROT_POP3S CURLPROTO_POP3S
712 #define PROT_SMTP CURLPROTO_SMTP
713 #define PROT_SMTPS CURLPROTO_SMTPS
714 #define PROT_RTSP CURLPROTO_RTSP
715 #define PROT_RTMP CURLPROTO_RTMP
716 #define PROT_RTMPT CURLPROTO_RTMPT
717 #define PROT_RTMPE CURLPROTO_RTMPE
718 #define PROT_RTMPTE CURLPROTO_RTMPTE
719 #define PROT_RTMPS CURLPROTO_RTMPS
720 #define PROT_RTMPTS CURLPROTO_RTMPTS
721 #define PROT_GOPHER CURLPROTO_GOPHER
723 /* (1<<25) is currently the highest used bit in the public bitmask. We make
724 sure we use "private bits" above the public ones to make things easier;
725 Gopher will not conflict with the current bit 25. */
727 #define PROT_EXTMASK 0x03ffffff
729 #define PROT_SSL (1<<29) /* protocol requires SSL */
731 /* these ones need action before socket close */
732 #define PROT_CLOSEACTION (PROT_FTP | PROT_IMAP | PROT_POP3)
733 #define PROT_DUALCHANNEL PROT_FTP /* these protocols use two connections */
735 /* 'dns_entry' is the particular host we use. This points to an entry in the
736 DNS cache and it will not get pruned while locked. It gets unlocked in
737 Curl_done(). This entry will be NULL if the connection is re-used as then
738 there is no name resolve done. */
739 struct Curl_dns_entry *dns_entry;
741 /* 'ip_addr' is the particular IP we connected to. It points to a struct
742 within the DNS cache, so this pointer is only valid as long as the DNS
743 cache entry remains locked. It gets unlocked in Curl_done() */
744 Curl_addrinfo *ip_addr;
746 /* 'ip_addr_str' is the ip_addr data as a human readable string.
747 It remains available as long as the connection does, which is longer than
748 the ip_addr itself. */
749 char ip_addr_str[MAX_IPADR_LEN];
751 unsigned int scope; /* address scope for IPv6 */
753 int socktype; /* SOCK_STREAM or SOCK_DGRAM */
755 struct hostname host;
756 struct hostname proxy;
758 long port; /* which port to use locally */
759 unsigned short remote_port; /* what remote port to connect to,
760 not the proxy port! */
762 /* 'primary_ip' and 'primary_port' get filled with peer's numerical
763 ip address and port number whenever an outgoing connection is
764 *attemted* from the primary socket to a remote address. When more
765 than one address is tried for a connection these will hold data
766 for the last attempt. When the connection is actualy established
767 these are updated with data which comes directly from the socket. */
769 char primary_ip[MAX_IPADR_LEN];
772 /* 'local_ip' and 'local_port' get filled with local's numerical
773 ip address and port number whenever an outgoing connection is
774 **established** from the primary socket to a remote address. */
776 char local_ip[MAX_IPADR_LEN];
779 char *user; /* user name string, allocated */
780 char *passwd; /* password string, allocated */
782 char *proxyuser; /* proxy user name string, allocated */
783 char *proxypasswd; /* proxy password string, allocated */
784 curl_proxytype proxytype; /* what kind of proxy that is in use */
786 int httpversion; /* the HTTP version*10 reported by the server */
787 int rtspversion; /* the RTSP version*10 reported by the server */
789 struct timeval now; /* "current" time */
790 struct timeval created; /* creation time */
791 curl_socket_t sock[2]; /* two sockets, the second is used for the data
792 transfer when doing FTP */
797 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */
798 struct ssl_config_data ssl_config;
800 struct ConnectBits bits; /* various state-flags for this connection */
802 const struct Curl_handler * handler; /* Connection's protocol handler. */
804 long ip_version; /* copied from the SessionHandle at creation time */
806 /**** curl_get() phase fields */
808 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
809 curl_socket_t writesockfd; /* socket to write to, it may very
810 well be the same we read from.
811 CURL_SOCKET_BAD disables */
813 /** Dynamicly allocated strings, may need to be freed before this **/
814 /** struct is killed. **/
815 struct dynamically_allocated_data {
816 char *proxyuserpwd; /* free later if not NULL! */
817 char *uagent; /* free later if not NULL! */
818 char *accept_encoding; /* free later if not NULL! */
819 char *userpwd; /* free later if not NULL! */
820 char *rangeline; /* free later if not NULL! */
821 char *ref; /* free later if not NULL! */
822 char *host; /* free later if not NULL */
823 char *cookiehost; /* free later if not NULL */
824 char *rtsp_transport; /* free later if not NULL */
827 int sec_complete; /* if kerberos is enabled for this connection */
828 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
829 enum protection_level command_prot;
830 enum protection_level data_prot;
831 enum protection_level request_data_prot;
833 struct krb4buffer in_buffer;
835 const struct Curl_sec_client_mech *mech;
836 struct sockaddr_in local_addr;
839 /* the two following *_inuse fields are only flags, not counters in any way.
840 If TRUE it means the channel is in use, and if FALSE it means the channel
841 is up for grabs by one. */
843 bool readchannel_inuse; /* whether the read channel is in use by an easy
845 bool writechannel_inuse; /* whether the write channel is in use by an easy
847 bool server_supports_pipelining; /* TRUE if server supports pipelining,
848 set after first response */
850 struct curl_llist *send_pipe; /* List of handles waiting to
851 send on this pipeline */
852 struct curl_llist *recv_pipe; /* List of handles waiting to read
853 their responses on this pipeline */
854 struct curl_llist *pend_pipe; /* List of pending handles on
856 struct curl_llist *done_pipe; /* Handles that are finished, but
857 still reference this connectdata */
858 #define MAX_PIPELINE_LENGTH 5
860 char* master_buffer; /* The master buffer allocated on-demand;
861 used for pipelining. */
862 size_t read_pos; /* Current read position in the master buffer */
863 size_t buf_len; /* Length of the buffer?? */
866 curl_seek_callback seek_func; /* function that seeks the input */
867 void *seek_client; /* pointer to pass to the seek() above */
869 /*************** Request - specific items ************/
871 /* previously this was in the urldata struct */
872 curl_read_callback fread_func; /* function that reads the input */
873 void *fread_in; /* pointer to pass to the fread() above */
875 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
876 because it authenticates connections, not
878 struct ntlmdata proxyntlm; /* NTLM data for proxy */
880 char syserr_buf [256]; /* buffer for Curl_strerror() */
882 #ifdef CURLRES_ASYNCH
883 /* data used for the asynch name resolve callback */
884 struct Curl_async async;
887 /* These three are used for chunked-encoding trailer support */
888 char *trailer; /* allocated buffer to store trailer in */
889 int trlMax; /* allocated buffer size */
890 int trlPos; /* index of where to store data */
893 struct ftp_conn ftpc;
894 struct ssh_conn sshc;
895 struct tftp_state_data *tftpc;
896 struct imap_conn imapc;
897 struct pop3_conn pop3c;
898 struct smtp_conn smtpc;
899 struct rtsp_conn rtspc;
903 int cselect_bits; /* bitmask of socket events */
904 int waitfor; /* current READ/WRITE bits to wait for */
906 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
907 int socks5_gssapi_enctype;
914 /* The end of connectdata. */
917 * Struct to keep statistical and informational data.
920 int httpcode; /* Recent HTTP, FTP, or RTSP response code */
921 int httpproxycode; /* response code from proxy when received separate */
922 int httpversion; /* the http version number X.Y = X*10+Y */
923 long filetime; /* If requested, this is might get set. Set to -1 if the time
924 was unretrievable. We cannot have this of type time_t,
925 since time_t is unsigned on several platforms such as
927 bool timecond; /* set to TRUE if the time condition didn't match, which
928 thus made the document NOT get fetched */
929 long header_size; /* size of read header(s) in bytes */
930 long request_size; /* the amount of bytes sent in the request(s) */
931 long proxyauthavail; /* what proxy auth types were announced */
932 long httpauthavail; /* what host auth types were announced */
933 long numconnects; /* how many new connection did libcurl created */
934 char *contenttype; /* the content type of the object */
935 char *wouldredirect; /* URL this would've been redirected to if asked to */
937 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
938 and, 'conn_local_port' are copied over from the connectdata struct in
939 order to allow curl_easy_getinfo() to return this information even when
940 the session handle is no longer associated with a connection, and also
941 allow curl_easy_reset() to clear this information from the session handle
942 without disturbing information which is still alive, and that might be
943 reused, in the connection cache. */
945 char conn_primary_ip[MAX_IPADR_LEN];
946 long conn_primary_port;
948 char conn_local_ip[MAX_IPADR_LEN];
949 long conn_local_port;
951 struct curl_certinfo certs; /* info about the certs, only populated in
952 OpenSSL builds. Asked for with
953 CURLOPT_CERTINFO / CURLINFO_CERTINFO */
958 long lastshow; /* time() of the last displayed progress meter or NULL to
959 force redraw at next call */
960 curl_off_t size_dl; /* total expected size */
961 curl_off_t size_ul; /* total expected size */
962 curl_off_t downloaded; /* transfered so far */
963 curl_off_t uploaded; /* transfered so far */
965 curl_off_t current_speed; /* uses the currently fastest transfer */
967 bool callback; /* set when progress callback is used */
968 int width; /* screen width at download start */
969 int flags; /* see progress.h */
979 double t_pretransfer;
980 double t_starttransfer;
983 struct timeval start;
984 struct timeval t_startsingle;
985 #define CURR_TIME (5+1) /* 6 entries for 5 seconds */
987 curl_off_t speeder[ CURR_TIME ];
988 struct timeval speeder_time[ CURR_TIME ];
993 HTTPREQ_NONE, /* first in list */
996 HTTPREQ_POST_FORM, /* we make a difference internally */
1000 HTTPREQ_LAST /* last in list */
1004 RTSPREQ_NONE, /* first in list */
1012 RTSPREQ_GET_PARAMETER,
1013 RTSPREQ_SET_PARAMETER,
1016 RTSPREQ_LAST /* last in list */
1020 * Values that are generated, temporary or calculated internally for a
1021 * "session handle" must be defined within the 'struct UrlState'. This struct
1022 * will be used within the SessionHandle struct. When the 'SessionHandle'
1023 * struct is cloned, this data MUST NOT be copied.
1025 * Remember that any "state" information goes globally for the curl handle.
1026 * Session-data MUST be put in the connectdata struct and here. */
1027 #define MAX_CURL_USER_LENGTH 256
1028 #define MAX_CURL_PASSWORD_LENGTH 256
1029 #define MAX_CURL_USER_LENGTH_TXT "255"
1030 #define MAX_CURL_PASSWORD_LENGTH_TXT "255"
1033 long want; /* Bitmask set to the authentication methods wanted by the app
1034 (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1036 long avail; /* bitmask for what the server reports to support for this
1038 bool done; /* TRUE when the auth phase is done and ready to do the *actual*
1040 bool multi; /* TRUE if this is not yet authenticated but within the auth
1041 multipass negotiation */
1042 bool iestyle; /* TRUE if digest should be done IE-style or FALSE if it should
1047 /* 'connects' will be an allocated array with pointers. If the pointer is
1048 set, it holds an allocated connection. */
1049 struct connectdata **connects;
1050 long num; /* number of entries of the 'connects' array */
1052 CONNCACHE_PRIVATE, /* used for an easy handle alone */
1053 CONNCACHE_MULTI /* shared within a multi handle */
1065 struct conncache *connc; /* points to the connection cache this handle
1068 /* buffers to store authentication data in, as parsed from input options */
1069 struct timeval keeps_speed; /* for the progress meter really */
1071 long lastconnect; /* index of most recent connect or -1 if undefined */
1073 char *headerbuff; /* allocated buffer to store headers in */
1074 size_t headersize; /* size of the allocation */
1076 char buffer[BUFSIZE+1]; /* download buffer */
1077 char uploadbuffer[BUFSIZE+1]; /* upload buffer */
1078 curl_off_t current_speed; /* the ProgressShow() funcion sets this,
1080 bool this_is_a_follow; /* this is a followed Location: request */
1082 char *first_host; /* if set, this should be the host name that we will
1083 sent authorization to, no else. Used to make Location:
1084 following not keep sending user+password... This is
1087 struct curl_ssl_session *session; /* array of 'numsessions' size */
1088 long sessionage; /* number of the most recent session */
1089 char *tempwrite; /* allocated buffer to keep data in when a write
1090 callback returns to make the connection paused */
1091 size_t tempwritesize; /* size of the 'tempwrite' allocated buffer */
1092 int tempwritetype; /* type of the 'tempwrite' buffer as a bitmask that is
1093 used with Curl_client_write() */
1094 char *scratch; /* huge buffer[BUFSIZE*2] when doing upload CRLF replacing */
1095 bool errorbuf; /* Set to TRUE if the error buffer is already filled in.
1096 This must be set to FALSE every time _easy_perform() is
1098 int os_errno; /* filled in with errno whenever an error occurs */
1100 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1101 void (*prev_signal)(int sig);
1103 bool allow_port; /* Is set.use_port allowed to take effect or not. This
1104 is always set TRUE when curl_easy_perform() is called. */
1105 struct digestdata digest; /* state data for host Digest auth */
1106 struct digestdata proxydigest; /* state data for proxy Digest auth */
1109 struct negotiatedata negotiate; /* state data for host Negotiate auth */
1110 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
1113 struct auth authhost; /* auth details for host */
1114 struct auth authproxy; /* auth details for proxy */
1116 bool authproblem; /* TRUE if there's some problem authenticating */
1119 ares_channel areschannel; /* for name resolves */
1122 #if defined(USE_SSLEAY) && defined(HAVE_OPENSSL_ENGINE_H)
1124 #endif /* USE_SSLEAY */
1125 struct timeval expiretime; /* set this with Curl_expire() only */
1126 struct Curl_tree timenode; /* for the splay stuff */
1127 struct curl_llist *timeoutlist; /* list of pending timeouts */
1129 /* a place to store the most recently set FTP entrypath */
1130 char *most_recent_ftp_entrypath;
1132 /* set after initial USER failure, to prevent an authentication loop */
1133 bool ftp_trying_alternative;
1135 int httpversion; /* the lowest HTTP version*10 reported by any server
1136 involved in this request */
1137 bool expect100header; /* TRUE if we added Expect: 100-continue */
1139 bool pipe_broke; /* TRUE if the connection we were pipelined on broke
1140 and we need to restart from the beginning */
1142 #if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__) && \
1143 !defined(__SYMBIAN32__)
1144 /* do FTP line-end conversions on most platforms */
1145 #define CURL_DO_LINEEND_CONV
1146 /* for FTP downloads: track CRLF sequences that span blocks */
1147 bool prev_block_had_trailing_cr;
1148 /* for FTP downloads: how many CRLFs did we converted to LFs? */
1149 curl_off_t crlf_conversions;
1151 /* If set to non-NULL, there's a connection in a shared connection cache
1152 that uses this handle so we can't kill this SessionHandle just yet but
1153 must keep it around and add it to the list of handles to kill once all
1154 its connections are gone */
1156 bool closed; /* set to TRUE when curl_easy_cleanup() has been called on this
1157 handle, but it is kept around as mentioned for
1159 char *pathbuffer;/* allocated buffer to store the URL's path part in */
1160 char *path; /* path to use, points to somewhere within the pathbuffer
1162 bool slash_removed; /* set TRUE if the 'path' points to a path where the
1163 initial URL slash separator has been taken off */
1165 bool rangestringalloc; /* the range string is malloc()'ed */
1167 char *range; /* range, if used. See README for detailed specification on
1169 curl_off_t resume_from; /* continue [ftp] transfer from here */
1171 /* This RTSP state information survives requests and connections */
1172 long rtsp_next_client_CSeq; /* the session's next client CSeq */
1173 long rtsp_next_server_CSeq; /* the session's next server CSeq */
1174 long rtsp_CSeq_recv; /* most recent CSeq received */
1176 /* Protocol specific data.
1178 *************************************************************************
1179 * Note that this data will be REMOVED after each request, so anything that
1180 * should be kept/stored on a per-connection basis and thus live for the
1181 * next request on the same connection MUST be put in the connectdata struct!
1182 *************************************************************************/
1185 struct HTTP *https; /* alias, just for the sake of being more readable */
1188 /* void *tftp; not used */
1189 struct FILEPROTO *file;
1190 void *telnet; /* private for telnet.c-eyes only */
1192 struct SSHPROTO *ssh;
1197 /* current user of this SessionHandle instance, or NULL */
1198 struct connectdata *current_conn;
1200 /* if true, force SSL connection retry (workaround for certain servers) */
1201 bool ssl_connect_retry;
1206 * This 'DynamicStatic' struct defines dynamic states that actually change
1207 * values in the 'UserDefined' area, which MUST be taken into consideration
1208 * if the UserDefined struct is cloned or similar. You can probably just
1209 * copy these, but each one indicate a special action on other data.
1212 struct DynamicStatic {
1213 char *url; /* work URL, copied from UserDefined */
1214 bool url_alloc; /* URL string is malloc()'ed */
1215 char *referer; /* referer string */
1216 bool referer_alloc; /* referer sting is malloc()ed */
1217 struct curl_slist *cookielist; /* list of cookie files set by
1218 curl_easy_setopt(COOKIEFILE) calls */
1219 struct curl_slist *resolve; /* set to point to the set.resolve list when
1220 this should be dealt with in pretransfer */
1224 * This 'UserDefined' struct must only contain data that is set once to go
1225 * for many (perhaps) independent connections. Values that are generated or
1226 * calculated internally for the "session handle" MUST be defined within the
1227 * 'struct UrlState' instead. The only exceptions MUST note the changes in
1228 * the 'DynamicStatic' struct.
1229 * Character pointer fields point to dynamic storage, unless otherwise stated.
1231 struct Curl_one_easy; /* declared and used only in multi.c */
1232 struct Curl_multi; /* declared and used only in multi.c */
1235 STRING_CERT, /* client certificate file name */
1236 STRING_CERT_TYPE, /* format for certificate (default: PEM)*/
1237 STRING_COOKIE, /* HTTP cookie string to send */
1238 STRING_COOKIEJAR, /* dump all cookies to this file */
1239 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1240 STRING_DEVICE, /* local network interface/address to use */
1241 STRING_ENCODING, /* Accept-Encoding string */
1242 STRING_FTP_ACCOUNT, /* ftp account data */
1243 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1244 STRING_FTPPORT, /* port to send with the FTP PORT command */
1245 STRING_KEY, /* private key file name */
1246 STRING_KEY_PASSWD, /* plain text private key password */
1247 STRING_KEY_TYPE, /* format for private key (default: PEM) */
1248 STRING_KRB_LEVEL, /* krb security level */
1249 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1251 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1252 STRING_PROXY, /* proxy to use */
1253 STRING_SET_RANGE, /* range, if used */
1254 STRING_SET_REFERER, /* custom string for the HTTP referer field */
1255 STRING_SET_URL, /* what original URL to work on */
1256 STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */
1257 STRING_SSL_CAFILE, /* certificate file to verify peer against */
1258 STRING_SSL_CIPHER_LIST, /* list of ciphers to use */
1259 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */
1260 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */
1261 STRING_USERAGENT, /* User-Agent string */
1262 STRING_SSL_CRLFILE, /* crl file to check certificate */
1263 STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */
1264 STRING_USERNAME, /* <username>, if used */
1265 STRING_PASSWORD, /* <password>, if used */
1266 STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1267 STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1268 STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1270 STRING_RTSP_SESSION_ID, /* Session ID to use */
1271 STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1272 STRING_RTSP_TRANSPORT, /* Transport for this session */
1274 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1275 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1276 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */
1277 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */
1279 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1280 STRING_SOCKS5_GSSAPI_SERVICE, /* GSSAPI service name */
1284 /* -- end of strings -- */
1285 STRING_LAST /* not used, just an end-of-list marker */
1288 struct UserDefined {
1289 FILE *err; /* the stderr user data goes here */
1290 void *debugdata; /* the data that will be passed to fdebug */
1291 char *errorbuffer; /* (Static) store failure messages in here */
1292 long proxyport; /* If non-zero, use this port number by default. If the
1293 proxy string features a ":[port]" that one will override
1295 void *out; /* the fetched file goes here */
1296 void *in; /* the uploaded file is read from here */
1297 void *writeheader; /* write the header to this if non-NULL */
1298 void *rtp_out; /* write RTP to this if non-NULL */
1299 long use_port; /* which port to use (when not using default) */
1300 long httpauth; /* what kind of HTTP authentication to use (bitmask) */
1301 long proxyauth; /* what kind of proxy authentication to use (bitmask) */
1302 long followlocation; /* as in HTTP Location: */
1303 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1305 bool post301; /* Obey RFC 2616/10.3.2 and keep POSTs as POSTs after a
1307 bool post302; /* keep POSTs as POSTs after a 302 */
1308 bool free_referer; /* set TRUE if 'referer' points to a string we
1310 void *postfields; /* if POST, set the fields' values here */
1311 curl_seek_callback seek_func; /* function that seeks the input */
1312 curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1313 of strlen(), and then the data *may* be binary
1314 (contain zero bytes) */
1315 unsigned short localport; /* local port number to bind to */
1316 int localportrange; /* number of additional port numbers to test in case the
1317 'localport' one can't be bind()ed */
1318 curl_write_callback fwrite_func; /* function that stores the output */
1319 curl_write_callback fwrite_header; /* function that stores headers */
1320 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1321 curl_read_callback fread_func; /* function that reads the input */
1322 int is_fread_set; /* boolean, has read callback been set to non-NULL? */
1323 int is_fwrite_set; /* boolean, has write callback been set to non-NULL? */
1324 curl_progress_callback fprogress; /* function for progress information */
1325 curl_debug_callback fdebug; /* function that write informational data */
1326 curl_ioctl_callback ioctl_func; /* function for I/O control */
1327 curl_sockopt_callback fsockopt; /* function for setting socket options */
1328 void *sockopt_client; /* pointer to pass to the socket options callback */
1329 curl_opensocket_callback fopensocket; /* function for checking/translating
1330 the address and opening the socket */
1331 void* opensocket_client;
1333 void *seek_client; /* pointer to pass to the seek callback */
1334 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */
1335 /* function to convert from the network encoding: */
1336 curl_conv_callback convfromnetwork;
1337 /* function to convert to the network encoding: */
1338 curl_conv_callback convtonetwork;
1339 /* function to convert from UTF-8 encoding: */
1340 curl_conv_callback convfromutf8;
1342 void *progress_client; /* pointer to pass to the progress callback */
1343 void *ioctl_client; /* pointer to pass to the ioctl callback */
1344 long timeout; /* in milliseconds, 0 means no timeout */
1345 long connecttimeout; /* in milliseconds, 0 means no timeout */
1346 long server_response_timeout; /* in milliseconds, 0 means no timeout */
1347 long tftp_blksize ; /* in bytes, 0 means use default */
1348 curl_off_t infilesize; /* size of file to upload, -1 means unknown */
1349 long low_speed_limit; /* bytes/second */
1350 long low_speed_time; /* number of seconds */
1351 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1352 curl_off_t max_recv_speed; /* high speed limit in bytes/second for download */
1353 curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1354 struct curl_slist *headers; /* linked list of extra headers */
1355 struct curl_httppost *httppost; /* linked list of POST data */
1356 bool cookiesession; /* new cookie session? */
1357 bool crlf; /* convert crlf on ftp upload(?) */
1358 struct curl_slist *quote; /* after connection is established */
1359 struct curl_slist *postquote; /* after the transfer */
1360 struct curl_slist *prequote; /* before the transfer, after type */
1361 struct curl_slist *source_quote; /* 3rd party quote */
1362 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before
1363 the transfer on source host */
1364 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after
1365 the transfer on source host */
1366 struct curl_slist *telnet_options; /* linked list of telnet options */
1367 struct curl_slist *resolve; /* list of names to add/remove from
1369 curl_TimeCond timecondition; /* kind of time/date comparison */
1370 time_t timevalue; /* what time to compare with */
1371 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
1372 long httpversion; /* when non-zero, a specific HTTP version requested to
1373 be used in the library's request(s) */
1374 struct ssl_config_data ssl; /* user defined SSL stuff */
1375 curl_proxytype proxytype; /* what kind of proxy that is in use */
1376 long dns_cache_timeout; /* DNS cache timeout */
1377 long buffer_size; /* size of receive buffer to use */
1378 void *private_data; /* application-private data */
1380 struct Curl_one_easy *one_easy; /* When adding an easy handle to a multi
1381 handle, an internal 'Curl_one_easy'
1382 struct is created and this is a pointer
1383 to the particular struct associated with
1384 this SessionHandle */
1386 struct curl_slist *http200aliases; /* linked list of aliases for http200 */
1388 long ipver; /* the CURL_IPRESOLVE_* defines in the public header file
1389 0 - whatever, 1 - v2, 2 - v6 */
1391 curl_off_t max_filesize; /* Maximum file size to download */
1393 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */
1395 int ftp_create_missing_dirs; /* 1 - create directories that don't exist
1396 2 - the same but also allow MKD to fail once
1399 curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1400 void *ssh_keyfunc_userp; /* custom pointer to callback */
1402 /* Here follows boolean settings that define how to behave during
1403 this session. They are STATIC, set by libcurl users or at least initially
1404 and they don't change during operations. */
1406 bool printhost; /* printing host name in debug info */
1407 bool get_filetime; /* get the time and get of the remote file */
1408 bool tunnel_thru_httpproxy; /* use CONNECT through a HTTP proxy */
1409 bool prefer_ascii; /* ASCII rather than binary */
1410 bool ftp_append; /* append, not overwrite, on upload */
1411 bool ftp_list_only; /* switch FTP command for listing directories */
1412 bool ftp_use_port; /* use the FTP PORT command */
1413 bool hide_progress; /* don't use the progress meter */
1414 bool http_fail_on_error; /* fail on HTTP error codes >= 300 */
1415 bool http_follow_location; /* follow HTTP redirects */
1416 bool http_disable_hostname_check_before_authentication;
1417 bool include_header; /* include received protocol headers in data output */
1418 bool http_set_referer; /* is a custom referer used */
1419 bool http_auto_referer; /* set "correct" referer when following location: */
1420 bool opt_no_body; /* as set with CURLOPT_NO_BODY */
1421 bool set_port; /* custom port number used */
1422 bool upload; /* upload request */
1423 enum CURL_NETRC_OPTION
1424 use_netrc; /* defined in include/curl.h */
1425 bool verbose; /* output verbosity */
1426 bool krb; /* kerberos connection requested */
1427 bool reuse_forbid; /* forbidden to be reused, close after use */
1428 bool reuse_fresh; /* do not re-use an existing connection */
1429 bool ftp_use_epsv; /* if EPSV is to be attempted or not */
1430 bool ftp_use_eprt; /* if EPRT is to be attempted or not */
1431 bool ftp_use_pret; /* if PRET is to be used before PASV or not */
1433 curl_usessl ftp_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1434 IMAP or POP3 or others! */
1435 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */
1436 curl_ftpccc ftp_ccc; /* FTP CCC options */
1437 bool no_signal; /* do not use any signal/alarm handler */
1438 bool global_dns_cache; /* subject for future removal */
1439 bool tcp_nodelay; /* whether to enable TCP_NODELAY or not */
1440 bool ignorecl; /* ignore content length */
1441 bool ftp_skip_ip; /* skip the IP address the FTP server passes on to
1443 bool connect_only; /* make connection, let application use the socket */
1444 long ssh_auth_types; /* allowed SSH auth types */
1445 bool http_te_skip; /* pass the raw body data to the user, even when
1446 transfer-encoded (chunked, compressed) */
1447 bool http_ce_skip; /* pass the raw body data to the user, even when
1448 content-encoded (chunked, compressed) */
1449 long new_file_perms; /* Permissions to use when creating remote files */
1450 long new_directory_perms; /* Permissions to use when creating remote dirs */
1451 bool proxy_transfer_mode; /* set transfer mode (;type=<a|i>) when doing FTP
1452 via an HTTP proxy */
1453 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */
1454 unsigned int scope; /* address scope for IPv6 */
1455 long allowed_protocols;
1456 long redir_protocols;
1457 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1458 long socks5_gssapi_nec; /* flag to support nec socks5 server */
1460 struct curl_slist *mail_rcpt; /* linked list of mail recipients */
1461 /* Common RTSP header options */
1462 Curl_RtspReq rtspreq; /* RTSP request type */
1463 long rtspversion; /* like httpversion, for RTSP */
1464 bool wildcardmatch; /* enable wildcard matching */
1465 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer starts */
1466 curl_chunk_end_callback chunk_end; /* called after part transferring
1468 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1469 to pattern (e.g. if WILDCARDMATCH is on) */
1474 struct curl_hash *hostcache;
1476 HCACHE_NONE, /* not pointing to anything */
1477 HCACHE_PRIVATE, /* points to our own */
1478 HCACHE_GLOBAL, /* points to the (shrug) global one */
1479 HCACHE_MULTI, /* points to a shared one in the multi handle */
1480 HCACHE_SHARED /* points to a shared one in a shared object */
1485 * The 'connectdata' struct MUST have all the connection oriented stuff as we
1486 * may have several simultaneous connections and connection structs in memory.
1488 * The 'struct UserDefined' must only contain data that is set once to go for
1489 * many (perhaps) independent connections. Values that are generated or
1490 * calculated internally for the "session handle" must be defined within the
1491 * 'struct UrlState' instead.
1494 struct SessionHandle {
1496 struct Curl_multi *multi; /* if non-NULL, points to the multi handle
1497 struct to which this "belongs" */
1498 struct Curl_one_easy *multi_pos; /* if non-NULL, points to its position
1499 in multi controlling structure to assist
1501 struct Curl_share *share; /* Share, handles global variable mutexing */
1502 struct SingleRequest req; /* Request-specific data */
1503 struct UserDefined set; /* values set by the libcurl user */
1504 struct DynamicStatic change; /* possibly modified userdefined data */
1505 struct CookieInfo *cookies; /* the cookies, read from files and servers.
1506 NOTE that the 'cookie' field in the
1507 UserDefined struct defines if the "engine"
1508 is to be used or not. */
1509 struct Progress progress; /* for all the progress meter data */
1510 struct UrlState state; /* struct for fields used for state info and
1511 other dynamic purposes */
1512 struct WildcardData wildcard; /* wildcard download state info */
1513 struct PureInfo info; /* stats, reports and info data */
1514 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
1515 iconv_t outbound_cd; /* for translating to the network encoding */
1516 iconv_t inbound_cd; /* for translating from the network encoding */
1517 iconv_t utf8_cd; /* for translating to UTF8 */
1518 #endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
1519 unsigned int magic; /* set to a CURLEASY_MAGIC_NUMBER */
1522 #define LIBCURL_NAME "libcurl"
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