1 #ifndef HEADER_CURL_URLDATA_H
2 #define HEADER_CURL_URLDATA_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2012, 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 */
27 #include "curl_setup.h"
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>
115 #undef OCSP_REQUEST /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */
116 #undef OCSP_RESPONSE /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */
117 #include <cyassl/openssl/ssl.h>
130 #include <axTLS/ssl.h>
134 #endif /* USE_AXTLS */
137 #include "curl_sspi.h"
139 #include <schannel.h>
143 #include <Security/Security.h>
144 /* For some reason, when building for iOS, the omnibus header above does
145 * not include SecureTransport.h as of iOS SDK 5.1. */
146 #include <Security/SecureTransport.h>
149 #ifdef HAVE_NETINET_IN_H
150 #include <netinet/in.h>
156 #include <zlib.h> /* for content-encoding */
158 /* zlib pollutes the namespace with this definition */
163 #include <curl/curl.h>
165 #include "http_chunks.h" /* for the structs and enum stuff */
178 #include "wildcard.h"
183 # elif defined HAVE_GSSMIT
184 # include <gssapi/gssapi.h>
185 # include <gssapi/gssapi_generic.h>
191 #ifdef HAVE_LIBSSH2_H
193 #include <libssh2_sftp.h>
194 #endif /* HAVE_LIBSSH2_H */
196 /* Download buffer size, keep it fairly big for speed reasons */
198 #define BUFSIZE CURL_MAX_WRITE_SIZE
200 /* Initial size of the buffer to store headers in, it'll be enlarged in case
202 #define HEADERSIZE 256
204 #define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
206 /* Some convenience macros to get the larger/smaller value out of two given.
207 We prefix with CURL to prevent name collisions. */
208 #define CURLMAX(x,y) ((x)>(y)?(x):(y))
209 #define CURLMIN(x,y) ((x)<(y)?(x):(y))
212 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
213 /* Types needed for krb4/5-ftp connections */
221 enum protection_level {
222 PROT_NONE, /* first in list */
228 PROT_LAST /* last in list */
233 /* Structs to store Schannel handles */
234 struct curl_schannel_cred {
235 CredHandle cred_handle;
236 TimeStamp time_stamp;
240 struct curl_schannel_ctxt {
241 CtxtHandle ctxt_handle;
242 TimeStamp time_stamp;
246 /* enum for the nonblocking SSL connection state machine */
250 ssl_connect_2_reading,
251 ssl_connect_2_writing,
258 ssl_connection_negotiating,
259 ssl_connection_complete
260 } ssl_connection_state;
262 /* struct for data related to each SSL connection */
263 struct ssl_connect_data {
264 /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm
265 but at least asked to or meaning to use it. See 'state' for the exact
266 current state of the connection. */
268 ssl_connection_state state;
270 /* these ones requires specific SSL-types */
274 ssl_connect_state connecting_state;
275 #endif /* USE_SSLEAY */
277 gnutls_session session;
278 gnutls_certificate_credentials cred;
280 gnutls_srp_client_credentials srp_client_cred;
282 ssl_connect_state connecting_state;
283 #endif /* USE_GNUTLS */
293 ssl_connect_state connecting_state;
294 #endif /* USE_POLARSSL */
298 ssl_connect_state connecting_state;
299 #endif /* USE_CYASSL */
302 char *client_nickname;
303 struct SessionHandle *data;
304 struct curl_llist *obj_list;
305 PK11GenericObject *obj_clicert;
309 #endif /* USE_QSOSSL */
313 #endif /* USE_AXTLS */
315 struct curl_schannel_cred *cred;
316 struct curl_schannel_ctxt *ctxt;
317 SecPkgContext_StreamSizes stream_sizes;
318 ssl_connect_state connecting_state;
319 size_t encdata_length, decdata_length;
320 size_t encdata_offset, decdata_offset;
321 unsigned char *encdata_buffer, *decdata_buffer;
322 unsigned long req_flags, ret_flags;
323 #endif /* USE_SCHANNEL */
325 SSLContextRef ssl_ctx;
326 curl_socket_t ssl_sockfd;
327 ssl_connect_state connecting_state;
328 bool ssl_direction; /* true if writing, false if reading */
329 #endif /* USE_DARWINSSL */
332 struct ssl_config_data {
333 long version; /* what version the client wants to use */
334 long certverifyresult; /* result from the certificate verification */
336 bool verifypeer; /* set TRUE if this is desired */
337 bool verifyhost; /* set TRUE if CN/SAN must match hostname */
338 char *CApath; /* certificate dir (doesn't work on windows) */
339 char *CAfile; /* certificate to verify peer against */
340 const char *CRLfile; /* CRL to check certificate revocation */
341 const char *issuercert;/* optional issuer certificate filename */
342 char *random_file; /* path to file containing "random" data */
343 char *egdsocket; /* path to file containing the EGD daemon socket */
344 char *cipher_list; /* list of ciphers to use */
345 size_t max_ssl_sessions; /* SSL session id cache size */
346 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
347 void *fsslctxp; /* parameter for call back */
348 bool sessionid; /* cache session IDs or not */
349 bool certinfo; /* gather lots of certificate info */
352 char *username; /* TLS username (for, e.g., SRP) */
353 char *password; /* TLS password (for, e.g., SRP) */
354 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */
358 /* information stored about one single SSL session */
359 struct curl_ssl_session {
360 char *name; /* host name for which this ID was used */
361 void *sessionid; /* as returned from the SSL layer */
362 size_t idsize; /* if known, otherwise 0 */
363 long age; /* just a number, the higher the more recent */
364 unsigned short remote_port; /* remote port to connect to */
365 struct ssl_config_data ssl_config; /* setup for this session */
368 /* Struct used for Digest challenge-response authentication */
374 bool stale; /* set true for re-negotiation */
378 int nc; /* nounce count */
389 #ifdef USE_WINDOWS_SSPI
390 #include "curl_sspi.h"
393 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
397 /* Struct used for NTLM challenge-response authentication */
400 #ifdef USE_WINDOWS_SSPI
403 SEC_WINNT_AUTH_IDENTITY identity;
404 SEC_WINNT_AUTH_IDENTITY *p_identity;
407 unsigned long n_type_2;
410 unsigned char nonce[8];
414 #ifdef USE_HTTP_NEGOTIATE
415 struct negotiatedata {
416 /* when doing Negotiate we first need to receive an auth token and then we
417 need to send our header */
418 enum { GSS_AUTHNONE, GSS_AUTHRECV, GSS_AUTHSENT } state;
419 bool gss; /* Whether we're processing GSS-Negotiate or Negotiate */
420 const char* protocol; /* "GSS-Negotiate" or "Negotiate" */
423 gss_ctx_id_t context;
424 gss_name_t server_name;
425 gss_buffer_desc output_token;
427 #ifdef USE_WINDOWS_SSPI
430 CredHandle *credentials;
431 char server_name[1024];
432 size_t max_token_length;
434 size_t output_token_length;
442 * Boolean values that concerns this connection.
445 bool close; /* if set, we close the connection after this request */
446 bool reuse; /* if set, this is a re-used connection */
447 bool proxy; /* if set, this transfer is done through a proxy - any type */
448 bool httpproxy; /* if set, this transfer is done through a http proxy */
449 bool user_passwd; /* do we use user+password for this connection? */
450 bool proxy_user_passwd; /* user+password for the proxy? */
451 bool ipv6_ip; /* we communicate with a remote site specified with pure IPv6
453 bool ipv6; /* we communicate with a site using an IPv6 address */
455 bool do_more; /* this is set TRUE if the ->curl_do_more() function is
456 supposed to be called, after ->curl_do() */
457 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set
458 the first time on the first connect function call */
459 bool protoconnstart;/* the protocol layer has STARTED its operation after
460 the TCP layer connect */
462 bool retry; /* this connection is about to get closed and then
463 re-attempted at another connection. */
464 bool tunnel_proxy; /* if CONNECT is used to "tunnel" through the proxy.
465 This is implicit when SSL-protocols are used through
466 proxies, but can also be enabled explicitly by
468 bool authneg; /* TRUE when the auth phase has started, which means
469 that we are creating a request with an auth header,
470 but it is not the final request in the auth
472 bool rewindaftersend;/* TRUE when the sending couldn't be stopped even
473 though it will be discarded. When the whole send
474 operation is done, we must call the data rewind
476 bool ftp_use_epsv; /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
477 EPSV doesn't work we disable it for the forthcoming
480 bool ftp_use_eprt; /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
481 EPRT doesn't work we disable it for the forthcoming
483 bool netrc; /* name+password provided by netrc */
484 bool userpwd_in_url; /* name+password found in url */
486 bool done; /* set to FALSE when Curl_do() is called and set to TRUE
487 when Curl_done() is called, to prevent Curl_done() to
488 get invoked twice when the multi interface is
490 bool stream_was_rewound; /* Indicates that the stream was rewound after a
491 request read past the end of its response byte
493 bool proxy_connect_closed; /* set true if a proxy disconnected the
494 connection in a CONNECT request with auth, so
495 that libcurl should reconnect and continue. */
496 bool bound; /* set true if bind() has already been done on this socket/
498 bool type_set; /* type= was used in the URL */
502 char *rawalloc; /* allocated "raw" version of the name */
503 char *encalloc; /* allocated IDN-encoded version of the name */
504 char *name; /* name to use internally, might be encoded, might be raw */
505 const char *dispname; /* name to display, as 'name' might be encoded */
509 * Flags on the keepon member of the Curl_transfer_keeper
513 #define KEEP_RECV (1<<0) /* there is or may be data to read */
514 #define KEEP_SEND (1<<1) /* there is or may be data to write */
515 #define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
516 might still be data to read */
517 #define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
518 might still be data to write */
519 #define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
520 #define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
522 #define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE)
523 #define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE)
528 ZLIB_UNINIT, /* uninitialized */
529 ZLIB_INIT, /* initialized */
530 ZLIB_GZIP_HEADER, /* reading gzip header */
531 ZLIB_GZIP_INFLATING, /* inflating gzip stream */
532 ZLIB_INIT_GZIP /* initialized in transparent gzip mode */
536 #ifdef CURLRES_ASYNCH
540 struct Curl_dns_entry *dns;
541 bool done; /* set TRUE when the lookup is complete */
542 int status; /* if done is TRUE, this is the status from the callback */
543 void *os_specific; /* 'struct thread_data' for Windows */
547 #define FIRSTSOCKET 0
548 #define SECONDARYSOCKET 1
550 /* These function pointer types are here only to allow easier typecasting
551 within the source when we need to cast between data pointers (such as NULL)
552 and function pointers. */
553 typedef CURLcode (*Curl_do_more_func)(struct connectdata *, bool *);
554 typedef CURLcode (*Curl_done_func)(struct connectdata *, CURLcode, bool);
558 EXP100_SEND_DATA, /* enough waiting, just send the body now */
559 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */
560 EXP100_SENDING_REQUEST, /* still sending the request but will wait for
561 the 100 header once done with the request */
562 EXP100_FAILED /* used on 417 Expectation Failed */
566 * Request specific data in the easy handle (SessionHandle). Previously,
567 * these members were on the connectdata struct but since a conn struct may
568 * now be shared between different SessionHandles, we store connection-specific
569 * data here. This struct only keeps stuff that's interesting for *this*
570 * request, as it will be cleared between multiple ones
572 struct SingleRequest {
573 curl_off_t size; /* -1 if unknown at this point */
574 curl_off_t *bytecountp; /* return number of bytes read or NULL */
576 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch,
577 -1 means unlimited */
578 curl_off_t *writebytecountp; /* return number of bytes written or NULL */
580 curl_off_t bytecount; /* total number of bytes read */
581 curl_off_t writebytecount; /* number of bytes written */
583 long headerbytecount; /* only count received headers */
584 long deductheadercount; /* this amount of bytes doesn't count when we check
585 if anything has been transferred at the end of a
586 connection. We use this counter to make only a
587 100 reply (without a following second response
588 code) result in a CURLE_GOT_NOTHING error code */
590 struct timeval start; /* transfer started at this time */
591 struct timeval now; /* current time */
592 bool header; /* incoming data has HTTP header */
594 HEADER_NORMAL, /* no bad header at all */
595 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
597 HEADER_ALLBAD /* all was believed to be header */
598 } badheader; /* the header was deemed bad and will be
600 int headerline; /* counts header lines to better track the
602 char *hbufp; /* points at *end* of header line */
604 char *str; /* within buf */
605 char *str_start; /* within buf */
606 char *end_ptr; /* within buf */
607 char *p; /* within headerbuff */
608 bool content_range; /* set TRUE if Content-Range: was found */
609 curl_off_t offset; /* possible resume offset read from the
610 Content-Range: header */
611 int httpcode; /* error code from the 'HTTP/1.? XXX' or
612 'RTSP/1.? XXX' line */
613 struct timeval start100; /* time stamp to wait for the 100 code from */
614 enum expect100 exp100; /* expect 100 continue state */
616 int auto_decoding; /* What content encoding. sec 3.5, RFC2616. */
618 #define IDENTITY 0 /* No encoding */
619 #define DEFLATE 1 /* zlib deflate [RFC 1950 & 1951] */
620 #define GZIP 2 /* gzip algorithm [RFC 1952] */
621 #define COMPRESS 3 /* Not handled, added for completeness */
624 zlibInitState zlib_init; /* possible zlib init state;
625 undefined if Content-Encoding header. */
626 z_stream z; /* State structure for zlib. */
638 bool upload_done; /* set to TRUE when doing chunked transfer-encoding upload
639 and we're uploading the last chunk */
641 bool ignorebody; /* we read a response-body but we ignore it! */
642 bool ignorecl; /* This HTTP response has no body so we ignore the Content-
645 char *location; /* This points to an allocated version of the Location:
647 char *newurl; /* Set to the new URL to use when a redirect or a retry is
650 /* 'upload_present' is used to keep a byte counter of how much data there is
651 still left in the buffer, aimed for upload. */
652 ssize_t upload_present;
654 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
655 buffer, so the next read should read from where this pointer points to,
656 and the 'upload_present' contains the number of bytes available at this
658 char *upload_fromhere;
660 bool chunk; /* if set, this is a chunked transfer-encoding */
661 bool upload_chunky; /* set TRUE if we are doing chunked transfer-encoding
663 bool getheader; /* TRUE if header parsing is wanted */
665 bool forbidchunk; /* used only to explicitly forbid chunk-upload for
666 specific upload buffers. See readmoredata() in
667 http.c for details. */
671 * Specific protocol handler.
674 struct Curl_handler {
675 const char * scheme; /* URL scheme name. */
677 /* Complement to setup_connection_internals(). */
678 CURLcode (*setup_connection)(struct connectdata *);
680 /* These two functions MUST be set to be protocol dependent */
681 CURLcode (*do_it)(struct connectdata *, bool *done);
684 /* If the curl_do() function is better made in two halves, this
685 * curl_do_more() function will be called afterwards, if set. For example
686 * for doing the FTP stuff after the PASV/PORT command.
688 Curl_do_more_func do_more;
690 /* This function *MAY* be set to a protocol-dependent function that is run
691 * after the connect() and everything is done, as a step in the connection.
692 * The 'done' pointer points to a bool that should be set to TRUE if the
693 * function completes before return. If it doesn't complete, the caller
694 * should call the curl_connecting() function until it is.
696 CURLcode (*connect_it)(struct connectdata *, bool *done);
698 /* See above. Currently only used for FTP. */
699 CURLcode (*connecting)(struct connectdata *, bool *done);
700 CURLcode (*doing)(struct connectdata *, bool *done);
702 /* Called from the multi interface during the PROTOCONNECT phase, and it
703 should then return a proper fd set */
704 int (*proto_getsock)(struct connectdata *conn,
705 curl_socket_t *socks,
708 /* Called from the multi interface during the DOING phase, and it should
709 then return a proper fd set */
710 int (*doing_getsock)(struct connectdata *conn,
711 curl_socket_t *socks,
714 /* Called from the multi interface during the DO_MORE phase, and it should
715 then return a proper fd set */
716 int (*domore_getsock)(struct connectdata *conn,
717 curl_socket_t *socks,
720 /* Called from the multi interface during the DO_DONE, PERFORM and
721 WAITPERFORM phases, and it should then return a proper fd set. Not setting
722 this will make libcurl use the generic default one. */
723 int (*perform_getsock)(const struct connectdata *conn,
724 curl_socket_t *socks,
727 /* This function *MAY* be set to a protocol-dependent function that is run
728 * by the curl_disconnect(), as a step in the disconnection. If the handler
729 * is called because the connection has been considered dead, dead_connection
732 CURLcode (*disconnect)(struct connectdata *, bool dead_connection);
734 /* If used, this function gets called from transfer.c:readwrite_data() to
735 allow the protocol to do extra reads/writes */
736 CURLcode (*readwrite)(struct SessionHandle *data, struct connectdata *conn,
737 ssize_t *nread, bool *readmore);
739 long defport; /* Default port. */
740 unsigned int protocol; /* See CURLPROTO_* */
741 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */
744 #define PROTOPT_NONE 0 /* nothing extra */
745 #define PROTOPT_SSL (1<<0) /* uses SSL */
746 #define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */
747 #define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */
748 /* some protocols will have to call the underlying functions without regard to
749 what exact state the socket signals. IE even if the socket says "readable",
750 the send function might need to be called while uploading, or vice versa.
752 #define PROTOPT_DIRLOCK (1<<3)
753 #define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */
754 #define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it
756 #define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle
757 url query strings (?foo=bar) ! */
760 /* return the count of bytes sent, or -1 on error */
761 typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */
762 int sockindex, /* socketindex */
763 const void *buf, /* data to write */
764 size_t len, /* max amount to write */
765 CURLcode *err); /* error to return */
767 /* return the count of bytes read, or -1 on error */
768 typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */
769 int sockindex, /* socketindex */
770 char *buf, /* store data here */
771 size_t len, /* max amount to read */
772 CURLcode *err); /* error to return */
775 * The connectdata struct contains all fields and variables that should be
776 * unique for an entire connection.
779 /* 'data' is the CURRENT SessionHandle using this connection -- take great
780 caution that this might very well vary between different times this
781 connection is used! */
782 struct SessionHandle *data;
784 /* chunk is for HTTP chunked encoding, but is in the general connectdata
785 struct only because we can do just about any protocol through a HTTP proxy
786 and a HTTP proxy may in fact respond using chunked encoding */
787 struct Curl_chunker chunk;
789 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */
790 void *closesocket_client;
792 bool inuse; /* This is a marker for the connection cache logic. If this is
793 TRUE this handle is being used by an easy handle and cannot
794 be used by any other easy handle without careful
795 consideration (== only for pipelining). */
797 /**** Fields set when inited and not modified again */
798 long connection_id; /* Contains a unique number to make it easier to
799 track the connections in the log output */
801 /* 'dns_entry' is the particular host we use. This points to an entry in the
802 DNS cache and it will not get pruned while locked. It gets unlocked in
803 Curl_done(). This entry will be NULL if the connection is re-used as then
804 there is no name resolve done. */
805 struct Curl_dns_entry *dns_entry;
807 /* 'ip_addr' is the particular IP we connected to. It points to a struct
808 within the DNS cache, so this pointer is only valid as long as the DNS
809 cache entry remains locked. It gets unlocked in Curl_done() */
810 Curl_addrinfo *ip_addr;
812 /* 'ip_addr_str' is the ip_addr data as a human readable string.
813 It remains available as long as the connection does, which is longer than
814 the ip_addr itself. */
815 char ip_addr_str[MAX_IPADR_LEN];
817 unsigned int scope; /* address scope for IPv6 */
819 int socktype; /* SOCK_STREAM or SOCK_DGRAM */
821 struct hostname host;
822 struct hostname proxy;
824 long port; /* which port to use locally */
825 unsigned short remote_port; /* what remote port to connect to,
826 not the proxy port! */
828 /* 'primary_ip' and 'primary_port' get filled with peer's numerical
829 ip address and port number whenever an outgoing connection is
830 *attempted* from the primary socket to a remote address. When more
831 than one address is tried for a connection these will hold data
832 for the last attempt. When the connection is actually established
833 these are updated with data which comes directly from the socket. */
835 char primary_ip[MAX_IPADR_LEN];
838 /* 'local_ip' and 'local_port' get filled with local's numerical
839 ip address and port number whenever an outgoing connection is
840 **established** from the primary socket to a remote address. */
842 char local_ip[MAX_IPADR_LEN];
845 char *user; /* user name string, allocated */
846 char *passwd; /* password string, allocated */
848 char *proxyuser; /* proxy user name string, allocated */
849 char *proxypasswd; /* proxy password string, allocated */
850 curl_proxytype proxytype; /* what kind of proxy that is in use */
852 int httpversion; /* the HTTP version*10 reported by the server */
853 int rtspversion; /* the RTSP version*10 reported by the server */
855 struct timeval now; /* "current" time */
856 struct timeval created; /* creation time */
857 curl_socket_t sock[2]; /* two sockets, the second is used for the data
858 transfer when doing FTP */
859 bool sock_accepted[2]; /* TRUE if the socket on this index was created with
864 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */
865 struct ssl_config_data ssl_config;
867 struct ConnectBits bits; /* various state-flags for this connection */
869 /* connecttime: when connect() is called on the current IP address. Used to
870 be able to track when to move on to try next IP - but only when the multi
871 interface is used. */
872 struct timeval connecttime;
873 /* The two fields below get set in Curl_connecthost */
874 int num_addr; /* number of addresses to try to connect to */
875 long timeoutms_per_addr; /* how long time in milliseconds to spend on
876 trying to connect to each IP address */
878 const struct Curl_handler *handler; /* Connection's protocol handler */
879 const struct Curl_handler *given; /* The protocol first given */
881 long ip_version; /* copied from the SessionHandle at creation time */
883 /**** curl_get() phase fields */
885 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
886 curl_socket_t writesockfd; /* socket to write to, it may very
887 well be the same we read from.
888 CURL_SOCKET_BAD disables */
890 /** Dynamicly allocated strings, MUST be freed before this **/
891 /** struct is killed. **/
892 struct dynamically_allocated_data {
895 char *accept_encoding;
901 char *rtsp_transport;
902 char *te; /* TE: request header */
905 int sec_complete; /* if kerberos is enabled for this connection */
906 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
907 enum protection_level command_prot;
908 enum protection_level data_prot;
909 enum protection_level request_data_prot;
911 struct krb4buffer in_buffer;
913 const struct Curl_sec_client_mech *mech;
914 struct sockaddr_in local_addr;
917 /* the two following *_inuse fields are only flags, not counters in any way.
918 If TRUE it means the channel is in use, and if FALSE it means the channel
919 is up for grabs by one. */
921 bool readchannel_inuse; /* whether the read channel is in use by an easy
923 bool writechannel_inuse; /* whether the write channel is in use by an easy
925 bool server_supports_pipelining; /* TRUE if server supports pipelining,
926 set after first response */
927 struct curl_llist *send_pipe; /* List of handles waiting to
928 send on this pipeline */
929 struct curl_llist *recv_pipe; /* List of handles waiting to read
930 their responses on this pipeline */
931 struct curl_llist *pend_pipe; /* List of pending handles on
933 struct curl_llist *done_pipe; /* Handles that are finished, but
934 still reference this connectdata */
935 #define MAX_PIPELINE_LENGTH 5
936 char* master_buffer; /* The master buffer allocated on-demand;
937 used for pipelining. */
938 size_t read_pos; /* Current read position in the master buffer */
939 size_t buf_len; /* Length of the buffer?? */
942 curl_seek_callback seek_func; /* function that seeks the input */
943 void *seek_client; /* pointer to pass to the seek() above */
945 /*************** Request - specific items ************/
947 /* previously this was in the urldata struct */
948 curl_read_callback fread_func; /* function that reads the input */
949 void *fread_in; /* pointer to pass to the fread() above */
951 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
952 because it authenticates connections, not
954 struct ntlmdata proxyntlm; /* NTLM data for proxy */
956 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
957 /* used for communication with Samba's winbind daemon helper ntlm_auth */
958 curl_socket_t ntlm_auth_hlpr_socket;
959 pid_t ntlm_auth_hlpr_pid;
960 char* challenge_header;
961 char* response_header;
964 char syserr_buf [256]; /* buffer for Curl_strerror() */
966 #ifdef CURLRES_ASYNCH
967 /* data used for the asynch name resolve callback */
968 struct Curl_async async;
971 /* These three are used for chunked-encoding trailer support */
972 char *trailer; /* allocated buffer to store trailer in */
973 int trlMax; /* allocated buffer size */
974 int trlPos; /* index of where to store data */
977 struct ftp_conn ftpc;
978 struct ssh_conn sshc;
979 struct tftp_state_data *tftpc;
980 struct imap_conn imapc;
981 struct pop3_conn pop3c;
982 struct smtp_conn smtpc;
983 struct rtsp_conn rtspc;
987 int cselect_bits; /* bitmask of socket events */
988 int waitfor; /* current READ/WRITE bits to wait for */
990 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
991 int socks5_gssapi_enctype;
997 /* When this connection is created, store the conditions for the local end
998 bind. This is stored before the actual bind and before any connection is
999 made and will serve the purpose of being used for comparison reasons so
1000 that subsequent bound-requested connections aren't accidentally re-using
1001 wrong connections. */
1003 unsigned short localport;
1006 /* tunnel as in tunnel through a HTTP proxy with CONNECT */
1008 TUNNEL_INIT, /* init/default/no tunnel state */
1009 TUNNEL_CONNECT, /* CONNECT has been sent off */
1010 TUNNEL_COMPLETE /* CONNECT response received completely */
1011 } tunnel_state[2]; /* two separate ones to allow FTP */
1013 struct connectbundle *bundle; /* The bundle we are member of */
1016 /* The end of connectdata. */
1019 * Struct to keep statistical and informational data.
1022 int httpcode; /* Recent HTTP, FTP, or RTSP response code */
1023 int httpproxycode; /* response code from proxy when received separate */
1024 int httpversion; /* the http version number X.Y = X*10+Y */
1025 long filetime; /* If requested, this is might get set. Set to -1 if the time
1026 was unretrievable. We cannot have this of type time_t,
1027 since time_t is unsigned on several platforms such as
1029 bool timecond; /* set to TRUE if the time condition didn't match, which
1030 thus made the document NOT get fetched */
1031 long header_size; /* size of read header(s) in bytes */
1032 long request_size; /* the amount of bytes sent in the request(s) */
1033 unsigned long proxyauthavail; /* what proxy auth types were announced */
1034 unsigned long httpauthavail; /* what host auth types were announced */
1035 long numconnects; /* how many new connection did libcurl created */
1036 char *contenttype; /* the content type of the object */
1037 char *wouldredirect; /* URL this would've been redirected to if asked to */
1039 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
1040 and, 'conn_local_port' are copied over from the connectdata struct in
1041 order to allow curl_easy_getinfo() to return this information even when
1042 the session handle is no longer associated with a connection, and also
1043 allow curl_easy_reset() to clear this information from the session handle
1044 without disturbing information which is still alive, and that might be
1045 reused, in the connection cache. */
1047 char conn_primary_ip[MAX_IPADR_LEN];
1048 long conn_primary_port;
1050 char conn_local_ip[MAX_IPADR_LEN];
1051 long conn_local_port;
1053 struct curl_certinfo certs; /* info about the certs, only populated in
1054 OpenSSL builds. Asked for with
1055 CURLOPT_CERTINFO / CURLINFO_CERTINFO */
1060 long lastshow; /* time() of the last displayed progress meter or NULL to
1061 force redraw at next call */
1062 curl_off_t size_dl; /* total expected size */
1063 curl_off_t size_ul; /* total expected size */
1064 curl_off_t downloaded; /* transferred so far */
1065 curl_off_t uploaded; /* transferred so far */
1067 curl_off_t current_speed; /* uses the currently fastest transfer */
1069 bool callback; /* set when progress callback is used */
1070 int width; /* screen width at download start */
1071 int flags; /* see progress.h */
1080 double t_appconnect;
1081 double t_pretransfer;
1082 double t_starttransfer;
1085 struct timeval start;
1086 struct timeval t_startsingle;
1087 struct timeval t_acceptdata;
1088 #define CURR_TIME (5+1) /* 6 entries for 5 seconds */
1090 curl_off_t speeder[ CURR_TIME ];
1091 struct timeval speeder_time[ CURR_TIME ];
1096 HTTPREQ_NONE, /* first in list */
1099 HTTPREQ_POST_FORM, /* we make a difference internally */
1103 HTTPREQ_LAST /* last in list */
1107 RTSPREQ_NONE, /* first in list */
1115 RTSPREQ_GET_PARAMETER,
1116 RTSPREQ_SET_PARAMETER,
1119 RTSPREQ_LAST /* last in list */
1123 * Values that are generated, temporary or calculated internally for a
1124 * "session handle" must be defined within the 'struct UrlState'. This struct
1125 * will be used within the SessionHandle struct. When the 'SessionHandle'
1126 * struct is cloned, this data MUST NOT be copied.
1128 * Remember that any "state" information goes globally for the curl handle.
1129 * Session-data MUST be put in the connectdata struct and here. */
1130 #define MAX_CURL_USER_LENGTH 256
1131 #define MAX_CURL_PASSWORD_LENGTH 256
1132 #define MAX_CURL_USER_LENGTH_TXT "255"
1133 #define MAX_CURL_PASSWORD_LENGTH_TXT "255"
1136 unsigned long want; /* Bitmask set to the authentication methods wanted by
1137 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1138 unsigned long picked;
1139 unsigned long avail; /* Bitmask for what the server reports to support for
1141 bool done; /* TRUE when the auth phase is done and ready to do the *actual*
1143 bool multi; /* TRUE if this is not yet authenticated but within the auth
1144 multipass negotiation */
1145 bool iestyle; /* TRUE if digest should be done IE-style or FALSE if it should
1156 /* Points to the connection cache */
1157 struct conncache *conn_cache;
1159 /* buffers to store authentication data in, as parsed from input options */
1160 struct timeval keeps_speed; /* for the progress meter really */
1162 struct connectdata *pending_conn; /* This points to the connection we want
1163 to open when we are waiting in the
1164 CONNECT_PEND state in the multi
1165 interface. This to avoid recreating it
1166 when we enter the CONNECT state again.
1169 struct connectdata *lastconnect; /* The last connection, NULL if undefined */
1171 char *headerbuff; /* allocated buffer to store headers in */
1172 size_t headersize; /* size of the allocation */
1174 char buffer[BUFSIZE+1]; /* download buffer */
1175 char uploadbuffer[BUFSIZE+1]; /* upload buffer */
1176 curl_off_t current_speed; /* the ProgressShow() funcion sets this,
1178 bool this_is_a_follow; /* this is a followed Location: request */
1180 char *first_host; /* if set, this should be the host name that we will
1181 sent authorization to, no else. Used to make Location:
1182 following not keep sending user+password... This is
1185 struct curl_ssl_session *session; /* array of 'max_ssl_sessions' size */
1186 long sessionage; /* number of the most recent session */
1187 char *tempwrite; /* allocated buffer to keep data in when a write
1188 callback returns to make the connection paused */
1189 size_t tempwritesize; /* size of the 'tempwrite' allocated buffer */
1190 int tempwritetype; /* type of the 'tempwrite' buffer as a bitmask that is
1191 used with Curl_client_write() */
1192 char *scratch; /* huge buffer[BUFSIZE*2] when doing upload CRLF replacing */
1193 bool errorbuf; /* Set to TRUE if the error buffer is already filled in.
1194 This must be set to FALSE every time _easy_perform() is
1196 int os_errno; /* filled in with errno whenever an error occurs */
1198 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1199 void (*prev_signal)(int sig);
1201 bool allow_port; /* Is set.use_port allowed to take effect or not. This
1202 is always set TRUE when curl_easy_perform() is called. */
1203 struct digestdata digest; /* state data for host Digest auth */
1204 struct digestdata proxydigest; /* state data for proxy Digest auth */
1206 #ifdef USE_HTTP_NEGOTIATE
1207 struct negotiatedata negotiate; /* state data for host Negotiate auth */
1208 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
1211 struct auth authhost; /* auth details for host */
1212 struct auth authproxy; /* auth details for proxy */
1214 bool authproblem; /* TRUE if there's some problem authenticating */
1216 void *resolver; /* resolver state, if it is used in the URL state -
1217 ares_channel f.e. */
1219 #if defined(USE_SSLEAY) && defined(HAVE_OPENSSL_ENGINE_H)
1221 #endif /* USE_SSLEAY */
1222 struct timeval expiretime; /* set this with Curl_expire() only */
1223 struct Curl_tree timenode; /* for the splay stuff */
1224 struct curl_llist *timeoutlist; /* list of pending timeouts */
1226 /* a place to store the most recently set FTP entrypath */
1227 char *most_recent_ftp_entrypath;
1229 /* set after initial USER failure, to prevent an authentication loop */
1230 bool ftp_trying_alternative;
1232 int httpversion; /* the lowest HTTP version*10 reported by any server
1233 involved in this request */
1234 bool expect100header; /* TRUE if we added Expect: 100-continue */
1236 bool pipe_broke; /* TRUE if the connection we were pipelined on broke
1237 and we need to restart from the beginning */
1239 #if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__) && \
1240 !defined(__SYMBIAN32__)
1241 /* do FTP line-end conversions on most platforms */
1242 #define CURL_DO_LINEEND_CONV
1243 /* for FTP downloads: track CRLF sequences that span blocks */
1244 bool prev_block_had_trailing_cr;
1245 /* for FTP downloads: how many CRLFs did we converted to LFs? */
1246 curl_off_t crlf_conversions;
1248 char *pathbuffer;/* allocated buffer to store the URL's path part in */
1249 char *path; /* path to use, points to somewhere within the pathbuffer
1251 bool slash_removed; /* set TRUE if the 'path' points to a path where the
1252 initial URL slash separator has been taken off */
1254 bool rangestringalloc; /* the range string is malloc()'ed */
1256 char *range; /* range, if used. See README for detailed specification on
1258 curl_off_t resume_from; /* continue [ftp] transfer from here */
1260 /* This RTSP state information survives requests and connections */
1261 long rtsp_next_client_CSeq; /* the session's next client CSeq */
1262 long rtsp_next_server_CSeq; /* the session's next server CSeq */
1263 long rtsp_CSeq_recv; /* most recent CSeq received */
1265 /* Protocol specific data.
1267 *************************************************************************
1268 * Note that this data will be REMOVED after each request, so anything that
1269 * should be kept/stored on a per-connection basis and thus live for the
1270 * next request on the same connection MUST be put in the connectdata struct!
1271 *************************************************************************/
1274 struct HTTP *https; /* alias, just for the sake of being more readable */
1277 /* void *tftp; not used */
1278 struct FILEPROTO *file;
1279 void *telnet; /* private for telnet.c-eyes only */
1281 struct SSHPROTO *ssh;
1286 /* current user of this SessionHandle instance, or NULL */
1287 struct connectdata *current_conn;
1289 /* if true, force SSL connection retry (workaround for certain servers) */
1290 bool ssl_connect_retry;
1295 * This 'DynamicStatic' struct defines dynamic states that actually change
1296 * values in the 'UserDefined' area, which MUST be taken into consideration
1297 * if the UserDefined struct is cloned or similar. You can probably just
1298 * copy these, but each one indicate a special action on other data.
1301 struct DynamicStatic {
1302 char *url; /* work URL, copied from UserDefined */
1303 bool url_alloc; /* URL string is malloc()'ed */
1304 char *referer; /* referer string */
1305 bool referer_alloc; /* referer sting is malloc()ed */
1306 struct curl_slist *cookielist; /* list of cookie files set by
1307 curl_easy_setopt(COOKIEFILE) calls */
1308 struct curl_slist *resolve; /* set to point to the set.resolve list when
1309 this should be dealt with in pretransfer */
1313 * This 'UserDefined' struct must only contain data that is set once to go
1314 * for many (perhaps) independent connections. Values that are generated or
1315 * calculated internally for the "session handle" MUST be defined within the
1316 * 'struct UrlState' instead. The only exceptions MUST note the changes in
1317 * the 'DynamicStatic' struct.
1318 * Character pointer fields point to dynamic storage, unless otherwise stated.
1320 struct Curl_one_easy; /* declared and used only in multi.c */
1321 struct Curl_multi; /* declared and used only in multi.c */
1324 STRING_CERT, /* client certificate file name */
1325 STRING_CERT_TYPE, /* format for certificate (default: PEM)*/
1326 STRING_COOKIE, /* HTTP cookie string to send */
1327 STRING_COOKIEJAR, /* dump all cookies to this file */
1328 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1329 STRING_DEVICE, /* local network interface/address to use */
1330 STRING_ENCODING, /* Accept-Encoding string */
1331 STRING_FTP_ACCOUNT, /* ftp account data */
1332 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1333 STRING_FTPPORT, /* port to send with the FTP PORT command */
1334 STRING_KEY, /* private key file name */
1335 STRING_KEY_PASSWD, /* plain text private key password */
1336 STRING_KEY_TYPE, /* format for private key (default: PEM) */
1337 STRING_KRB_LEVEL, /* krb security level */
1338 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1340 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1341 STRING_PROXY, /* proxy to use */
1342 STRING_SET_RANGE, /* range, if used */
1343 STRING_SET_REFERER, /* custom string for the HTTP referer field */
1344 STRING_SET_URL, /* what original URL to work on */
1345 STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */
1346 STRING_SSL_CAFILE, /* certificate file to verify peer against */
1347 STRING_SSL_CIPHER_LIST, /* list of ciphers to use */
1348 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */
1349 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */
1350 STRING_USERAGENT, /* User-Agent string */
1351 STRING_SSL_CRLFILE, /* crl file to check certificate */
1352 STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */
1353 STRING_USERNAME, /* <username>, if used */
1354 STRING_PASSWORD, /* <password>, if used */
1355 STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1356 STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1357 STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1359 STRING_RTSP_SESSION_ID, /* Session ID to use */
1360 STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1361 STRING_RTSP_TRANSPORT, /* Transport for this session */
1363 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1364 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1365 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */
1366 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */
1368 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1369 STRING_SOCKS5_GSSAPI_SERVICE, /* GSSAPI service name */
1375 STRING_TLSAUTH_USERNAME, /* TLS auth <username> */
1376 STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */
1379 /* -- end of strings -- */
1380 STRING_LAST /* not used, just an end-of-list marker */
1383 struct UserDefined {
1384 FILE *err; /* the stderr user data goes here */
1385 void *debugdata; /* the data that will be passed to fdebug */
1386 char *errorbuffer; /* (Static) store failure messages in here */
1387 long proxyport; /* If non-zero, use this port number by default. If the
1388 proxy string features a ":[port]" that one will override
1390 void *out; /* the fetched file goes here */
1391 void *in; /* the uploaded file is read from here */
1392 void *writeheader; /* write the header to this if non-NULL */
1393 void *rtp_out; /* write RTP to this if non-NULL */
1394 long use_port; /* which port to use (when not using default) */
1395 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
1396 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
1397 long followlocation; /* as in HTTP Location: */
1398 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1401 int keep_post; /* keep POSTs as POSTs after a 30x request; each
1402 bit represents a request, from 301 to 303 */
1403 bool free_referer; /* set TRUE if 'referer' points to a string we
1405 void *postfields; /* if POST, set the fields' values here */
1406 curl_seek_callback seek_func; /* function that seeks the input */
1407 curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1408 of strlen(), and then the data *may* be binary
1409 (contain zero bytes) */
1410 unsigned short localport; /* local port number to bind to */
1411 int localportrange; /* number of additional port numbers to test in case the
1412 'localport' one can't be bind()ed */
1413 curl_write_callback fwrite_func; /* function that stores the output */
1414 curl_write_callback fwrite_header; /* function that stores headers */
1415 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1416 curl_read_callback fread_func; /* function that reads the input */
1417 int is_fread_set; /* boolean, has read callback been set to non-NULL? */
1418 int is_fwrite_set; /* boolean, has write callback been set to non-NULL? */
1419 curl_progress_callback fprogress; /* function for progress information */
1420 curl_debug_callback fdebug; /* function that write informational data */
1421 curl_ioctl_callback ioctl_func; /* function for I/O control */
1422 curl_sockopt_callback fsockopt; /* function for setting socket options */
1423 void *sockopt_client; /* pointer to pass to the socket options callback */
1424 curl_opensocket_callback fopensocket; /* function for checking/translating
1425 the address and opening the
1427 void* opensocket_client;
1428 curl_closesocket_callback fclosesocket; /* function for closing the
1430 void* closesocket_client;
1432 void *seek_client; /* pointer to pass to the seek callback */
1433 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */
1434 /* function to convert from the network encoding: */
1435 curl_conv_callback convfromnetwork;
1436 /* function to convert to the network encoding: */
1437 curl_conv_callback convtonetwork;
1438 /* function to convert from UTF-8 encoding: */
1439 curl_conv_callback convfromutf8;
1441 void *progress_client; /* pointer to pass to the progress callback */
1442 void *ioctl_client; /* pointer to pass to the ioctl callback */
1443 long timeout; /* in milliseconds, 0 means no timeout */
1444 long connecttimeout; /* in milliseconds, 0 means no timeout */
1445 long accepttimeout; /* in milliseconds, 0 means no timeout */
1446 long server_response_timeout; /* in milliseconds, 0 means no timeout */
1447 long tftp_blksize ; /* in bytes, 0 means use default */
1448 curl_off_t infilesize; /* size of file to upload, -1 means unknown */
1449 long low_speed_limit; /* bytes/second */
1450 long low_speed_time; /* number of seconds */
1451 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1452 curl_off_t max_recv_speed; /* high speed limit in bytes/second for
1454 curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1455 struct curl_slist *headers; /* linked list of extra headers */
1456 struct curl_httppost *httppost; /* linked list of POST data */
1457 bool cookiesession; /* new cookie session? */
1458 bool crlf; /* convert crlf on ftp upload(?) */
1459 struct curl_slist *quote; /* after connection is established */
1460 struct curl_slist *postquote; /* after the transfer */
1461 struct curl_slist *prequote; /* before the transfer, after type */
1462 struct curl_slist *source_quote; /* 3rd party quote */
1463 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before
1464 the transfer on source host */
1465 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after
1466 the transfer on source host */
1467 struct curl_slist *telnet_options; /* linked list of telnet options */
1468 struct curl_slist *resolve; /* list of names to add/remove from
1470 curl_TimeCond timecondition; /* kind of time/date comparison */
1471 time_t timevalue; /* what time to compare with */
1472 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
1473 long httpversion; /* when non-zero, a specific HTTP version requested to
1474 be used in the library's request(s) */
1475 struct ssl_config_data ssl; /* user defined SSL stuff */
1476 curl_proxytype proxytype; /* what kind of proxy that is in use */
1477 long dns_cache_timeout; /* DNS cache timeout */
1478 long buffer_size; /* size of receive buffer to use */
1479 void *private_data; /* application-private data */
1481 struct Curl_one_easy *one_easy; /* When adding an easy handle to a multi
1482 handle, an internal 'Curl_one_easy'
1483 struct is created and this is a pointer
1484 to the particular struct associated with
1485 this SessionHandle */
1487 struct curl_slist *http200aliases; /* linked list of aliases for http200 */
1489 long ipver; /* the CURL_IPRESOLVE_* defines in the public header file
1490 0 - whatever, 1 - v2, 2 - v6 */
1492 curl_off_t max_filesize; /* Maximum file size to download */
1494 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */
1496 int ftp_create_missing_dirs; /* 1 - create directories that don't exist
1497 2 - the same but also allow MKD to fail once
1500 curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1501 void *ssh_keyfunc_userp; /* custom pointer to callback */
1503 /* Here follows boolean settings that define how to behave during
1504 this session. They are STATIC, set by libcurl users or at least initially
1505 and they don't change during operations. */
1507 bool printhost; /* printing host name in debug info */
1508 bool get_filetime; /* get the time and get of the remote file */
1509 bool tunnel_thru_httpproxy; /* use CONNECT through a HTTP proxy */
1510 bool prefer_ascii; /* ASCII rather than binary */
1511 bool ftp_append; /* append, not overwrite, on upload */
1512 bool ftp_list_only; /* switch FTP command for listing directories */
1513 bool ftp_use_port; /* use the FTP PORT command */
1514 bool hide_progress; /* don't use the progress meter */
1515 bool http_fail_on_error; /* fail on HTTP error codes >= 300 */
1516 bool http_follow_location; /* follow HTTP redirects */
1517 bool http_transfer_encoding; /* request compressed HTTP transfer-encoding */
1518 bool http_disable_hostname_check_before_authentication;
1519 bool include_header; /* include received protocol headers in data output */
1520 bool http_set_referer; /* is a custom referer used */
1521 bool http_auto_referer; /* set "correct" referer when following location: */
1522 bool opt_no_body; /* as set with CURLOPT_NO_BODY */
1523 bool set_port; /* custom port number used */
1524 bool upload; /* upload request */
1525 enum CURL_NETRC_OPTION
1526 use_netrc; /* defined in include/curl.h */
1527 bool verbose; /* output verbosity */
1528 bool krb; /* kerberos connection requested */
1529 bool reuse_forbid; /* forbidden to be reused, close after use */
1530 bool reuse_fresh; /* do not re-use an existing connection */
1531 bool ftp_use_epsv; /* if EPSV is to be attempted or not */
1532 bool ftp_use_eprt; /* if EPRT is to be attempted or not */
1533 bool ftp_use_pret; /* if PRET is to be used before PASV or not */
1535 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1536 IMAP or POP3 or others! */
1537 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */
1538 curl_ftpccc ftp_ccc; /* FTP CCC options */
1539 bool no_signal; /* do not use any signal/alarm handler */
1540 bool global_dns_cache; /* subject for future removal */
1541 bool tcp_nodelay; /* whether to enable TCP_NODELAY or not */
1542 bool ignorecl; /* ignore content length */
1543 bool ftp_skip_ip; /* skip the IP address the FTP server passes on to
1545 bool connect_only; /* make connection, let application use the socket */
1546 bool ssl_enable_beast; /* especially allow this flaw for interoperability's
1548 long ssh_auth_types; /* allowed SSH auth types */
1549 bool http_te_skip; /* pass the raw body data to the user, even when
1550 transfer-encoded (chunked, compressed) */
1551 bool http_ce_skip; /* pass the raw body data to the user, even when
1552 content-encoded (chunked, compressed) */
1553 long new_file_perms; /* Permissions to use when creating remote files */
1554 long new_directory_perms; /* Permissions to use when creating remote dirs */
1555 bool proxy_transfer_mode; /* set transfer mode (;type=<a|i>) when doing FTP
1556 via an HTTP proxy */
1557 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */
1558 unsigned int scope; /* address scope for IPv6 */
1559 long allowed_protocols;
1560 long redir_protocols;
1561 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1562 long socks5_gssapi_nec; /* flag to support nec socks5 server */
1564 struct curl_slist *mail_rcpt; /* linked list of mail recipients */
1565 /* Common RTSP header options */
1566 Curl_RtspReq rtspreq; /* RTSP request type */
1567 long rtspversion; /* like httpversion, for RTSP */
1568 bool wildcardmatch; /* enable wildcard matching */
1569 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer
1571 curl_chunk_end_callback chunk_end; /* called after part transferring
1573 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1574 to pattern (e.g. if WILDCARDMATCH is on) */
1577 long gssapi_delegation; /* GSSAPI credential delegation, see the
1578 documentation of CURLOPT_GSSAPI_DELEGATION */
1580 bool tcp_keepalive; /* use TCP keepalives */
1581 long tcp_keepidle; /* seconds in idle before sending keepalive probe */
1582 long tcp_keepintvl; /* seconds between TCP keepalive probes */
1584 size_t maxconnects; /* Max idle connections in the connection cache */
1588 struct curl_hash *hostcache;
1590 HCACHE_NONE, /* not pointing to anything */
1591 HCACHE_PRIVATE, /* points to our own */
1592 HCACHE_GLOBAL, /* points to the (shrug) global one */
1593 HCACHE_MULTI, /* points to a shared one in the multi handle */
1594 HCACHE_SHARED /* points to a shared one in a shared object */
1599 * The 'connectdata' struct MUST have all the connection oriented stuff as we
1600 * may have several simultaneous connections and connection structs in memory.
1602 * The 'struct UserDefined' must only contain data that is set once to go for
1603 * many (perhaps) independent connections. Values that are generated or
1604 * calculated internally for the "session handle" must be defined within the
1605 * 'struct UrlState' instead.
1608 struct SessionHandle {
1610 struct Curl_multi *multi; /* if non-NULL, points to the multi handle
1611 struct to which this "belongs" */
1612 struct Curl_one_easy *multi_pos; /* if non-NULL, points to its position
1613 in multi controlling structure to assist
1615 struct Curl_share *share; /* Share, handles global variable mutexing */
1616 struct SingleRequest req; /* Request-specific data */
1617 struct UserDefined set; /* values set by the libcurl user */
1618 struct DynamicStatic change; /* possibly modified userdefined data */
1619 struct CookieInfo *cookies; /* the cookies, read from files and servers.
1620 NOTE that the 'cookie' field in the
1621 UserDefined struct defines if the "engine"
1622 is to be used or not. */
1623 struct Progress progress; /* for all the progress meter data */
1624 struct UrlState state; /* struct for fields used for state info and
1625 other dynamic purposes */
1626 struct WildcardData wildcard; /* wildcard download state info */
1627 struct PureInfo info; /* stats, reports and info data */
1628 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
1629 iconv_t outbound_cd; /* for translating to the network encoding */
1630 iconv_t inbound_cd; /* for translating from the network encoding */
1631 iconv_t utf8_cd; /* for translating to UTF8 */
1632 #endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
1633 unsigned int magic; /* set to a CURLEASY_MAGIC_NUMBER */
1636 #define LIBCURL_NAME "libcurl"
1638 #endif /* HEADER_CURL_URLDATA_H */
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