1 #ifndef HEADER_CURL_URLDATA_H
2 #define HEADER_CURL_URLDATA_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2020, 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 https://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
46 #define PORT_SMTPS 465 /* sometimes called SSMTP */
48 #define PORT_RTMP 1935
49 #define PORT_RTMPT PORT_HTTP
50 #define PORT_RTMPS PORT_HTTPS
51 #define PORT_GOPHER 70
52 #define PORT_MQTT 1883
54 #define DICT_MATCH "/MATCH:"
55 #define DICT_MATCH2 "/M:"
56 #define DICT_MATCH3 "/FIND:"
57 #define DICT_DEFINE "/DEFINE:"
58 #define DICT_DEFINE2 "/D:"
59 #define DICT_DEFINE3 "/LOOKUP:"
61 #define CURL_DEFAULT_USER "anonymous"
62 #define CURL_DEFAULT_PASSWORD "ftp@example.com"
64 /* Convenience defines for checking protocols or their SSL based version. Each
65 protocol handler should only ever have a single CURLPROTO_ in its protocol
67 #define PROTO_FAMILY_HTTP (CURLPROTO_HTTP|CURLPROTO_HTTPS)
68 #define PROTO_FAMILY_FTP (CURLPROTO_FTP|CURLPROTO_FTPS)
69 #define PROTO_FAMILY_POP3 (CURLPROTO_POP3|CURLPROTO_POP3S)
70 #define PROTO_FAMILY_SMB (CURLPROTO_SMB|CURLPROTO_SMBS)
71 #define PROTO_FAMILY_SMTP (CURLPROTO_SMTP|CURLPROTO_SMTPS)
72 #define PROTO_FAMILY_SSH (CURLPROTO_SCP|CURLPROTO_SFTP)
74 #define DEFAULT_CONNCACHE_SIZE 5
76 /* length of longest IPv6 address string including the trailing null */
77 #define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
79 /* Default FTP/IMAP etc response timeout in milliseconds */
80 #define RESP_TIMEOUT (120*1000)
82 /* Max string input length is a precaution against abuse and to detect junk
83 input easier and better. */
84 #define CURL_MAX_INPUT_LENGTH 8000000
90 #ifdef HAVE_NETINET_IN_H
91 #include <netinet/in.h>
93 #ifdef HAVE_NETINET_IN6_H
94 #include <netinet/in6.h>
99 #include <curl/curl.h>
101 #include "http_chunks.h" /* for the structs and enum stuff */
107 /* return the count of bytes sent, or -1 on error */
108 typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */
109 int sockindex, /* socketindex */
110 const void *buf, /* data to write */
111 size_t len, /* max amount to write */
112 CURLcode *err); /* error to return */
114 /* return the count of bytes read, or -1 on error */
115 typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */
116 int sockindex, /* socketindex */
117 char *buf, /* store data here */
118 size_t len, /* max amount to read */
119 CURLcode *err); /* error to return */
127 #include "vssh/ssh.h"
132 #include "wildcard.h"
133 #include "multihandle.h"
139 # elif defined HAVE_GSSAPI_GSSAPI_H
140 # include <gssapi/gssapi.h>
144 # ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H
145 # include <gssapi/gssapi_generic.h>
149 #ifdef HAVE_LIBSSH2_H
151 #include <libssh2_sftp.h>
152 #endif /* HAVE_LIBSSH2_H */
154 #define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
155 #define GOOD_EASY_HANDLE(x) \
156 ((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER))
158 /* the type we use for storing a single boolean bit */
161 #define BIT(x) bool x
163 typedef unsigned int bit;
164 #define BIT(x) bit x:1
168 /* Types needed for krb5-ftp connections */
176 enum protection_level {
177 PROT_NONE, /* first in list */
183 PROT_LAST /* last in list */
187 /* enum for the nonblocking SSL connection state machine */
191 ssl_connect_2_reading,
192 ssl_connect_2_writing,
199 ssl_connection_negotiating,
200 ssl_connection_complete
201 } ssl_connection_state;
203 /* SSL backend-specific data; declared differently by each SSL backend */
204 struct ssl_backend_data;
206 /* struct for data related to each SSL connection */
207 struct ssl_connect_data {
208 /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm
209 but at least asked to or meaning to use it. See 'state' for the exact
210 current state of the connection. */
211 ssl_connection_state state;
212 ssl_connect_state connecting_state;
214 struct ssl_backend_data *backend;
219 struct ssl_primary_config {
220 long version; /* what version the client wants to use */
221 long version_max; /* max supported version the client wants to use*/
222 char *CApath; /* certificate dir (doesn't work on windows) */
223 char *CAfile; /* certificate to verify peer against */
225 char *random_file; /* path to file containing "random" data */
226 char *egdsocket; /* path to file containing the EGD daemon socket */
227 char *cipher_list; /* list of ciphers to use */
228 char *cipher_list13; /* list of TLS 1.3 cipher suites to use */
230 struct curl_blob *cert_blob;
231 char *curves; /* list of curves to use */
232 BIT(verifypeer); /* set TRUE if this is desired */
233 BIT(verifyhost); /* set TRUE if CN/SAN must match hostname */
234 BIT(verifystatus); /* set TRUE if certificate status must be checked */
235 BIT(sessionid); /* cache session IDs or not */
238 struct ssl_config_data {
239 struct ssl_primary_config primary;
240 long certverifyresult; /* result from the certificate verification */
241 char *CRLfile; /* CRL to check certificate revocation */
242 char *issuercert;/* optional issuer certificate filename */
243 struct curl_blob *issuercert_blob;
244 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
245 void *fsslctxp; /* parameter for call back */
246 char *cert_type; /* format for certificate (default: PEM)*/
247 char *key; /* private key file name */
248 struct curl_blob *key_blob;
249 char *key_type; /* format for private key (default: PEM) */
250 char *key_passwd; /* plain text private key password */
252 char *username; /* TLS username (for, e.g., SRP) */
253 char *password; /* TLS password (for, e.g., SRP) */
254 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */
256 BIT(certinfo); /* gather lots of certificate info */
258 BIT(enable_beast); /* allow this flaw for interoperability's sake*/
259 BIT(no_revoke); /* disable SSL certificate revocation checks */
260 BIT(no_partialchain); /* don't accept partial certificate chains */
261 BIT(revoke_best_effort); /* ignore SSL revocation offline/missing revocation
263 BIT(native_ca_store); /* use the native ca store of operating system */
266 struct ssl_general_config {
267 size_t max_ssl_sessions; /* SSL session id cache size */
270 /* information stored about one single SSL session */
271 struct Curl_ssl_session {
272 char *name; /* host name for which this ID was used */
273 char *conn_to_host; /* host name for the connection (may be NULL) */
274 const char *scheme; /* protocol scheme used */
275 void *sessionid; /* as returned from the SSL layer */
276 size_t idsize; /* if known, otherwise 0 */
277 long age; /* just a number, the higher the more recent */
278 int remote_port; /* remote port */
279 int conn_to_port; /* remote port for the connection (may be -1) */
280 struct ssl_primary_config ssl_config; /* setup for this session */
283 #ifdef USE_WINDOWS_SSPI
284 #include "curl_sspi.h"
287 /* Struct used for Digest challenge-response authentication */
289 #if defined(USE_WINDOWS_SSPI)
291 size_t input_token_len;
292 CtxtHandle *http_context;
293 /* copy of user/passwd used to make the identity for http_context.
294 either may be NULL. */
305 int nc; /* nounce count */
306 BIT(stale); /* set true for re-negotiation */
327 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
331 /* Struct used for GSSAPI (Kerberos V5) authentication */
332 #if defined(USE_KERBEROS5)
333 struct kerberos5data {
334 #if defined(USE_WINDOWS_SSPI)
335 CredHandle *credentials;
338 SEC_WINNT_AUTH_IDENTITY identity;
339 SEC_WINNT_AUTH_IDENTITY *p_identity;
343 gss_ctx_id_t context;
349 /* Struct used for NTLM challenge-response authentication */
350 #if defined(USE_NTLM)
352 #ifdef USE_WINDOWS_SSPI
353 /* The sslContext is used for the Schannel bindings. The
354 * api is available on the Windows 7 SDK and later.
356 #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
357 CtxtHandle *sslContext;
359 CredHandle *credentials;
361 SEC_WINNT_AUTH_IDENTITY identity;
362 SEC_WINNT_AUTH_IDENTITY *p_identity;
366 size_t input_token_len;
370 unsigned char nonce[8];
371 void *target_info; /* TargetInfo received in the ntlm type-2 message */
372 unsigned int target_info_len;
374 #if defined(NTLM_WB_ENABLED)
375 /* used for communication with Samba's winbind daemon helper ntlm_auth */
376 curl_socket_t ntlm_auth_hlpr_socket;
377 pid_t ntlm_auth_hlpr_pid;
378 char *challenge; /* The received base64 encoded ntlm type-2 message */
379 char *response; /* The generated base64 ntlm type-1/type-3 message */
385 /* Struct used for Negotiate (SPNEGO) authentication */
387 struct negotiatedata {
390 gss_ctx_id_t context;
392 gss_buffer_desc output_token;
394 #ifdef USE_WINDOWS_SSPI
395 #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
396 CtxtHandle *sslContext;
399 CredHandle *credentials;
401 SEC_WINNT_AUTH_IDENTITY identity;
402 SEC_WINNT_AUTH_IDENTITY *p_identity;
406 size_t output_token_length;
410 BIT(havenoauthpersist);
412 BIT(havemultiplerequests);
418 * Boolean values that concerns this connection.
421 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set
422 the first time on the first connect function call */
423 #ifndef CURL_DISABLE_PROXY
424 bool proxy_ssl_connected[2]; /* TRUE when SSL initialization for HTTPS proxy
426 BIT(httpproxy); /* if set, this transfer is done through a http proxy */
427 BIT(socksproxy); /* if set, this transfer is done through a socks proxy */
428 BIT(proxy_user_passwd); /* user+password for the proxy? */
429 BIT(tunnel_proxy); /* if CONNECT is used to "tunnel" through the proxy.
430 This is implicit when SSL-protocols are used through
431 proxies, but can also be enabled explicitly by
433 BIT(proxy_connect_closed); /* TRUE if a proxy disconnected the connection
434 in a CONNECT request with auth, so that
435 libcurl should reconnect and continue. */
437 /* always modify bits.close with the connclose() and connkeep() macros! */
438 BIT(close); /* if set, we close the connection after this request */
439 BIT(reuse); /* if set, this is a re-used connection */
440 BIT(altused); /* this is an alt-svc "redirect" */
441 BIT(conn_to_host); /* if set, this connection has a "connect to host"
442 that overrides the host in the URL */
443 BIT(conn_to_port); /* if set, this connection has a "connect to port"
444 that overrides the port in the URL (remote port) */
445 BIT(proxy); /* if set, this transfer is done through a proxy - any type */
446 BIT(user_passwd); /* do we use user+password for this connection? */
447 BIT(ipv6_ip); /* we communicate with a remote site specified with pure IPv6
449 BIT(ipv6); /* we communicate with a site using an IPv6 address */
450 BIT(do_more); /* this is set TRUE if the ->curl_do_more() function is
451 supposed to be called, after ->curl_do() */
452 BIT(protoconnstart);/* the protocol layer has STARTED its operation after
453 the TCP layer connect */
454 BIT(retry); /* this connection is about to get closed and then
455 re-attempted at another connection. */
456 BIT(authneg); /* TRUE when the auth phase has started, which means
457 that we are creating a request with an auth header,
458 but it is not the final request in the auth
460 BIT(rewindaftersend);/* TRUE when the sending couldn't be stopped even
461 though it will be discarded. When the whole send
462 operation is done, we must call the data rewind
464 #ifndef CURL_DISABLE_FTP
465 BIT(ftp_use_epsv); /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
466 EPSV doesn't work we disable it for the forthcoming
468 BIT(ftp_use_eprt); /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
469 EPRT doesn't work we disable it for the forthcoming
471 BIT(ftp_use_data_ssl); /* Enabled SSL for the data connection */
472 BIT(ftp_use_control_ssl); /* Enabled SSL for the control connection */
474 BIT(netrc); /* name+password provided by netrc */
475 BIT(bound); /* set true if bind() has already been done on this socket/
477 BIT(multiplex); /* connection is multiplexed */
478 BIT(tcp_fastopen); /* use TCP Fast Open */
479 BIT(tls_enable_npn); /* TLS NPN extension? */
480 BIT(tls_enable_alpn); /* TLS ALPN extension? */
483 #ifdef USE_UNIX_SOCKETS
484 BIT(abstract_unix_socket);
487 BIT(sock_accepted); /* TRUE if the SECONDARYSOCKET was created with
489 BIT(parallel_connect); /* set TRUE when a parallel connect attempt has
490 started (happy eyeballs) */
494 char *rawalloc; /* allocated "raw" version of the name */
495 char *encalloc; /* allocated IDN-encoded version of the name */
496 char *name; /* name to use internally, might be encoded, might be raw */
497 const char *dispname; /* name to display, as 'name' might be encoded */
501 * Flags on the keepon member of the Curl_transfer_keeper
505 #define KEEP_RECV (1<<0) /* there is or may be data to read */
506 #define KEEP_SEND (1<<1) /* there is or may be data to write */
507 #define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
508 might still be data to read */
509 #define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
510 might still be data to write */
511 #define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
512 #define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
514 #define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE)
515 #define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE)
520 struct Curl_dns_entry *dns;
521 int status; /* if done is TRUE, this is the status from the callback */
522 void *os_specific; /* 'struct thread_data' for Windows */
523 BIT(done); /* set TRUE when the lookup is complete */
526 #define FIRSTSOCKET 0
527 #define SECONDARYSOCKET 1
529 /* These function pointer types are here only to allow easier typecasting
530 within the source when we need to cast between data pointers (such as NULL)
531 and function pointers. */
532 typedef CURLcode (*Curl_do_more_func)(struct connectdata *, int *);
533 typedef CURLcode (*Curl_done_func)(struct connectdata *, CURLcode, bool);
536 EXP100_SEND_DATA, /* enough waiting, just send the body now */
537 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */
538 EXP100_SENDING_REQUEST, /* still sending the request but will wait for
539 the 100 header once done with the request */
540 EXP100_FAILED /* used on 417 Expectation Failed */
544 UPGR101_INIT, /* default state */
545 UPGR101_REQUESTED, /* upgrade requested */
546 UPGR101_RECEIVED, /* response received */
547 UPGR101_WORKING /* talking upgraded protocol */
551 /* Explicit values for first two symbols so as to match hard-coded
552 * constants in existing code
554 DOH_PROBE_SLOT_IPADDR_V4 = 0, /* make 'V4' stand out for readability */
555 DOH_PROBE_SLOT_IPADDR_V6 = 1, /* 'V6' likewise */
557 /* Space here for (possibly build-specific) additional slot definitions */
560 /* #ifdef WANT_DOH_FOOBAR_TXT */
561 /* DOH_PROBE_SLOT_FOOBAR_TXT, */
564 /* AFTER all slot definitions, establish how many we have */
568 /* one of these for each DoH request */
572 unsigned char dohbuffer[512];
574 struct dynbuf serverdoh;
578 struct curl_slist *headers;
579 struct dnsprobe probe[DOH_PROBE_SLOTS];
580 unsigned int pending; /* still outstanding requests */
586 * Request specific data in the easy handle (Curl_easy). Previously,
587 * these members were on the connectdata struct but since a conn struct may
588 * now be shared between different Curl_easys, we store connection-specific
589 * data here. This struct only keeps stuff that's interesting for *this*
590 * request, as it will be cleared between multiple ones
592 struct SingleRequest {
593 curl_off_t size; /* -1 if unknown at this point */
594 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch,
595 -1 means unlimited */
596 curl_off_t bytecount; /* total number of bytes read */
597 curl_off_t writebytecount; /* number of bytes written */
599 curl_off_t headerbytecount; /* only count received headers */
600 curl_off_t deductheadercount; /* this amount of bytes doesn't count when we
601 check if anything has been transferred at
602 the end of a connection. We use this
603 counter to make only a 100 reply (without a
604 following second response code) result in a
605 CURLE_GOT_NOTHING error code */
607 struct curltime start; /* transfer started at this time */
608 struct curltime now; /* current time */
610 HEADER_NORMAL, /* no bad header at all */
611 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
613 HEADER_ALLBAD /* all was believed to be header */
614 } badheader; /* the header was deemed bad and will be
616 int headerline; /* counts header lines to better track the
618 char *str; /* within buf */
619 curl_off_t offset; /* possible resume offset read from the
620 Content-Range: header */
621 int httpcode; /* error code from the 'HTTP/1.? XXX' or
622 'RTSP/1.? XXX' line */
623 struct curltime start100; /* time stamp to wait for the 100 code from */
624 enum expect100 exp100; /* expect 100 continue state */
625 enum upgrade101 upgr101; /* 101 upgrade state */
627 /* Content unencoding stack. See sec 3.5, RFC2616. */
628 struct contenc_writer *writer_stack;
632 char *location; /* This points to an allocated version of the Location:
634 char *newurl; /* Set to the new URL to use when a redirect or a retry is
637 /* 'upload_present' is used to keep a byte counter of how much data there is
638 still left in the buffer, aimed for upload. */
639 ssize_t upload_present;
641 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
642 buffer, so the next read should read from where this pointer points to,
643 and the 'upload_present' contains the number of bytes available at this
645 char *upload_fromhere;
646 void *protop; /* Allocated protocol-specific data. Each protocol
647 handler makes sure this points to data it needs. */
648 #ifndef CURL_DISABLE_DOH
649 struct dohdata doh; /* DoH specific data for this request */
651 BIT(header); /* incoming data has HTTP header */
652 BIT(content_range); /* set TRUE if Content-Range: was found */
653 BIT(upload_done); /* set to TRUE when doing chunked transfer-encoding
654 upload and we're uploading the last chunk */
655 BIT(ignorebody); /* we read a response-body but we ignore it! */
656 BIT(http_bodyless); /* HTTP response status code is between 100 and 199,
658 BIT(chunk); /* if set, this is a chunked transfer-encoding */
659 BIT(upload_chunky); /* set TRUE if we are doing chunked transfer-encoding
661 BIT(getheader); /* TRUE if header parsing is wanted */
662 BIT(forbidchunk); /* used only to explicitly forbid chunk-upload for
663 specific upload buffers. See readmoredata() in http.c
668 * Specific protocol handler.
671 struct Curl_handler {
672 const char *scheme; /* URL scheme name. */
674 /* Complement to setup_connection_internals(). */
675 CURLcode (*setup_connection)(struct connectdata *);
677 /* These two functions MUST be set to be protocol dependent */
678 CURLcode (*do_it)(struct connectdata *, bool *done);
681 /* If the curl_do() function is better made in two halves, this
682 * curl_do_more() function will be called afterwards, if set. For example
683 * for doing the FTP stuff after the PASV/PORT command.
685 Curl_do_more_func do_more;
687 /* This function *MAY* be set to a protocol-dependent function that is run
688 * after the connect() and everything is done, as a step in the connection.
689 * The 'done' pointer points to a bool that should be set to TRUE if the
690 * function completes before return. If it doesn't complete, the caller
691 * should call the curl_connecting() function until it is.
693 CURLcode (*connect_it)(struct connectdata *, bool *done);
696 CURLcode (*connecting)(struct connectdata *, bool *done);
697 CURLcode (*doing)(struct connectdata *, bool *done);
699 /* Called from the multi interface during the PROTOCONNECT phase, and it
700 should then return a proper fd set */
701 int (*proto_getsock)(struct connectdata *conn,
702 curl_socket_t *socks);
704 /* Called from the multi interface during the DOING phase, and it should
705 then return a proper fd set */
706 int (*doing_getsock)(struct connectdata *conn,
707 curl_socket_t *socks);
709 /* Called from the multi interface during the DO_MORE phase, and it should
710 then return a proper fd set */
711 int (*domore_getsock)(struct connectdata *conn,
712 curl_socket_t *socks);
714 /* Called from the multi interface during the DO_DONE, PERFORM and
715 WAITPERFORM phases, and it should then return a proper fd set. Not setting
716 this will make libcurl use the generic default one. */
717 int (*perform_getsock)(const struct connectdata *conn,
718 curl_socket_t *socks);
720 /* This function *MAY* be set to a protocol-dependent function that is run
721 * by the curl_disconnect(), as a step in the disconnection. If the handler
722 * is called because the connection has been considered dead, dead_connection
725 CURLcode (*disconnect)(struct connectdata *, bool dead_connection);
727 /* If used, this function gets called from transfer.c:readwrite_data() to
728 allow the protocol to do extra reads/writes */
729 CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn,
730 ssize_t *nread, bool *readmore);
732 /* This function can perform various checks on the connection. See
733 CONNCHECK_* for more information about the checks that can be performed,
734 and CONNRESULT_* for the results that can be returned. */
735 unsigned int (*connection_check)(struct connectdata *conn,
736 unsigned int checks_to_perform);
738 long defport; /* Default port. */
739 unsigned int protocol; /* See CURLPROTO_* - this needs to be the single
740 specific protocol bit */
741 unsigned int family; /* single bit for protocol family; basically the
742 non-TLS name of the protocol this is */
743 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */
746 #define PROTOPT_NONE 0 /* nothing extra */
747 #define PROTOPT_SSL (1<<0) /* uses SSL */
748 #define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */
749 #define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */
750 /* some protocols will have to call the underlying functions without regard to
751 what exact state the socket signals. IE even if the socket says "readable",
752 the send function might need to be called while uploading, or vice versa.
754 #define PROTOPT_DIRLOCK (1<<3)
755 #define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */
756 #define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it
758 #define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle
759 url query strings (?foo=bar) ! */
760 #define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per
761 request instead of per connection */
762 #define PROTOPT_ALPN_NPN (1<<8) /* set ALPN and/or NPN for this */
763 #define PROTOPT_STREAM (1<<9) /* a protocol with individual logical streams */
764 #define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field
766 #define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a
767 HTTP proxy as HTTP proxies may know
768 this protocol and act as a gateway */
769 #define PROTOPT_WILDCARD (1<<12) /* protocol supports wildcard matching */
770 #define PROTOPT_USERPWDCTRL (1<<13) /* Allow "control bytes" (< 32 ascii) in
771 user name and password */
773 #define CONNCHECK_NONE 0 /* No checks */
774 #define CONNCHECK_ISDEAD (1<<0) /* Check if the connection is dead. */
775 #define CONNCHECK_KEEPALIVE (1<<1) /* Perform any keepalive function. */
777 #define CONNRESULT_NONE 0 /* No extra information. */
778 #define CONNRESULT_DEAD (1<<0) /* The connection is dead. */
780 #ifdef USE_RECV_BEFORE_SEND_WORKAROUND
781 struct postponed_data {
782 char *buffer; /* Temporal store for received data during
783 sending, must be freed */
784 size_t allocated_size; /* Size of temporal store */
785 size_t recv_size; /* Size of received data during sending */
786 size_t recv_processed; /* Size of processed part of postponed data */
788 curl_socket_t bindsock;/* Structure must be bound to specific socket,
789 used only for DEBUGASSERT */
790 #endif /* DEBUGBUILD */
792 #endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
795 struct hostname host;
797 curl_proxytype proxytype; /* what kind of proxy that is in use */
798 char *user; /* proxy user name string, allocated */
799 char *passwd; /* proxy password string, allocated */
802 /* struct for HTTP CONNECT state data */
803 struct http_connect_state {
804 struct dynbuf rcvbuf;
806 curl_off_t cl; /* size of content to read and ignore */
808 TUNNEL_INIT, /* init/default/no tunnel state */
809 TUNNEL_CONNECT, /* CONNECT has been sent off */
810 TUNNEL_COMPLETE /* CONNECT response received completely */
812 BIT(chunked_encoding);
813 BIT(close_connection);
818 /* for the (SOCKS) connect state machine */
821 CONNECT_SOCKS_INIT, /* 1 */
822 CONNECT_SOCKS_SEND, /* 2 waiting to send more first data */
823 CONNECT_SOCKS_READ_INIT, /* 3 set up read */
824 CONNECT_SOCKS_READ, /* 4 read server response */
825 CONNECT_GSSAPI_INIT, /* 5 */
826 CONNECT_AUTH_INIT, /* 6 setup outgoing auth buffer */
827 CONNECT_AUTH_SEND, /* 7 send auth */
828 CONNECT_AUTH_READ, /* 8 read auth response */
829 CONNECT_REQ_INIT, /* 9 init SOCKS "request" */
830 CONNECT_RESOLVING, /* 10 */
831 CONNECT_RESOLVED, /* 11 */
832 CONNECT_RESOLVE_REMOTE, /* 12 */
833 CONNECT_REQ_SEND, /* 13 */
834 CONNECT_REQ_SENDING, /* 14 */
835 CONNECT_REQ_READ, /* 15 */
836 CONNECT_REQ_READ_MORE, /* 16 */
837 CONNECT_DONE /* 17 connected fine to the remote or the SOCKS proxy */
840 #define SOCKS_STATE(x) (((x) >= CONNECT_SOCKS_INIT) && \
841 ((x) < CONNECT_DONE))
842 #define SOCKS_REQUEST_BUFSIZE 600 /* room for large user/pw (255 max each) */
845 enum connect_t state;
846 unsigned char socksreq[SOCKS_REQUEST_BUFSIZE];
848 /* CONNECT_SOCKS_SEND */
849 ssize_t outstanding; /* send this many bytes more */
850 unsigned char *outp; /* send from this pointer */
854 * The connectdata struct contains all fields and variables that should be
855 * unique for an entire connection.
858 /* 'data' is the CURRENT Curl_easy using this connection -- take great
859 caution that this might very well vary between different times this
860 connection is used! */
861 struct Curl_easy *data;
862 struct connstate cnnct;
863 struct Curl_llist_element bundle_node; /* conncache */
865 /* chunk is for HTTP chunked encoding, but is in the general connectdata
866 struct only because we can do just about any protocol through a HTTP proxy
867 and a HTTP proxy may in fact respond using chunked encoding */
868 struct Curl_chunker chunk;
870 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */
871 void *closesocket_client;
873 /* This is used by the connection cache logic. If this returns TRUE, this
874 handle is still used by one or more easy handles and can only used by any
875 other easy handle without careful consideration (== only for
876 multiplexing) and it cannot be used by another multi handle! */
877 #define CONN_INUSE(c) ((c)->easyq.size)
879 /**** Fields set when inited and not modified again */
880 long connection_id; /* Contains a unique number to make it easier to
881 track the connections in the log output */
883 /* 'dns_entry' is the particular host we use. This points to an entry in the
884 DNS cache and it will not get pruned while locked. It gets unlocked in
885 multi_done(). This entry will be NULL if the connection is re-used as then
886 there is no name resolve done. */
887 struct Curl_dns_entry *dns_entry;
889 /* 'ip_addr' is the particular IP we connected to. It points to a struct
890 within the DNS cache, so this pointer is only valid as long as the DNS
891 cache entry remains locked. It gets unlocked in multi_done() */
892 struct Curl_addrinfo *ip_addr;
893 struct Curl_addrinfo *tempaddr[2]; /* for happy eyeballs */
895 /* 'ip_addr_str' is the ip_addr data as a human readable string.
896 It remains available as long as the connection does, which is longer than
897 the ip_addr itself. */
898 char ip_addr_str[MAX_IPADR_LEN];
900 unsigned int scope_id; /* Scope id for IPv6 */
909 struct quicsocket hequic[2]; /* two, for happy eyeballs! */
910 struct quicsocket *quic;
913 struct hostname host;
914 char *hostname_resolve; /* host name to resolve to address, allocated */
915 char *secondaryhostname; /* secondary socket host name (ftp) */
916 struct hostname conn_to_host; /* the host to connect to. valid only if
917 bits.conn_to_host is set */
918 #ifndef CURL_DISABLE_PROXY
919 struct proxy_info socks_proxy;
920 struct proxy_info http_proxy;
922 long port; /* which port to use locally */
923 int remote_port; /* the remote port, not the proxy port! */
924 int conn_to_port; /* the remote port to connect to. valid only if
925 bits.conn_to_port is set */
926 unsigned short secondary_port; /* secondary socket remote port to connect to
929 /* 'primary_ip' and 'primary_port' get filled with peer's numerical
930 ip address and port number whenever an outgoing connection is
931 *attempted* from the primary socket to a remote address. When more
932 than one address is tried for a connection these will hold data
933 for the last attempt. When the connection is actually established
934 these are updated with data which comes directly from the socket. */
936 char primary_ip[MAX_IPADR_LEN];
939 /* 'local_ip' and 'local_port' get filled with local's numerical
940 ip address and port number whenever an outgoing connection is
941 **established** from the primary socket to a remote address. */
943 char local_ip[MAX_IPADR_LEN];
946 char *user; /* user name string, allocated */
947 char *passwd; /* password string, allocated */
948 char *options; /* options string, allocated */
950 char *sasl_authzid; /* authorisation identity string, allocated */
952 int httpversion; /* the HTTP version*10 reported by the server */
953 int rtspversion; /* the RTSP version*10 reported by the server */
955 struct curltime now; /* "current" time */
956 struct curltime created; /* creation time */
957 struct curltime lastused; /* when returned to the connection cache */
958 curl_socket_t sock[2]; /* two sockets, the second is used for the data
959 transfer when doing FTP */
960 curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */
961 int tempfamily[2]; /* family used for the temp sockets */
965 #ifdef USE_RECV_BEFORE_SEND_WORKAROUND
966 struct postponed_data postponed[2]; /* two buffers for two sockets */
967 #endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
968 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */
969 #ifndef CURL_DISABLE_PROXY
970 struct ssl_connect_data proxy_ssl[2]; /* this is for proxy ssl-stuff */
973 void *ssl_extra; /* separately allocated backend-specific data */
975 struct ssl_primary_config ssl_config;
976 #ifndef CURL_DISABLE_PROXY
977 struct ssl_primary_config proxy_ssl_config;
979 struct ConnectBits bits; /* various state-flags for this connection */
981 /* connecttime: when connect() is called on the current IP address. Used to
982 be able to track when to move on to try next IP - but only when the multi
983 interface is used. */
984 struct curltime connecttime;
985 /* The two fields below get set in Curl_connecthost */
986 int num_addr; /* number of addresses to try to connect to */
988 /* how long time in milliseconds to spend on trying to connect to each IP
989 address, per family */
990 timediff_t timeoutms_per_addr[2];
992 const struct Curl_handler *handler; /* Connection's protocol handler */
993 const struct Curl_handler *given; /* The protocol first given */
995 long ip_version; /* copied from the Curl_easy at creation time */
997 /* Protocols can use a custom keepalive mechanism to keep connections alive.
998 This allows those protocols to track the last time the keepalive mechanism
999 was used on this connection. */
1000 struct curltime keepalive;
1002 long upkeep_interval_ms; /* Time between calls for connection upkeep. */
1004 /**** curl_get() phase fields */
1006 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
1007 curl_socket_t writesockfd; /* socket to write to, it may very
1008 well be the same we read from.
1009 CURL_SOCKET_BAD disables */
1012 BIT(sec_complete); /* if Kerberos is enabled for this connection */
1013 enum protection_level command_prot;
1014 enum protection_level data_prot;
1015 enum protection_level request_data_prot;
1017 struct krb5buffer in_buffer;
1019 const struct Curl_sec_client_mech *mech;
1020 struct sockaddr_in local_addr;
1023 #if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */
1024 struct kerberos5data krb5; /* variables into the structure definition, */
1025 #endif /* however, some of them are ftp specific. */
1027 struct Curl_llist easyq; /* List of easy handles using this connection */
1028 curl_seek_callback seek_func; /* function that seeks the input */
1029 void *seek_client; /* pointer to pass to the seek() above */
1031 /*************** Request - specific items ************/
1032 #if defined(USE_WINDOWS_SSPI) && defined(SECPKG_ATTR_ENDPOINT_BINDINGS)
1033 CtxtHandle *sslContext;
1036 #if defined(USE_NTLM)
1037 curlntlm http_ntlm_state;
1038 curlntlm proxy_ntlm_state;
1040 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
1041 because it authenticates connections, not
1043 struct ntlmdata proxyntlm; /* NTLM data for proxy */
1047 curlnegotiate http_negotiate_state;
1048 curlnegotiate proxy_negotiate_state;
1050 struct negotiatedata negotiate; /* state data for host Negotiate auth */
1051 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
1054 /* data used for the asynch name resolve callback */
1055 struct Curl_async async;
1057 /* for chunked-encoded trailer */
1058 struct dynbuf trailer;
1061 struct ftp_conn ftpc;
1062 struct http_conn httpc;
1063 struct ssh_conn sshc;
1064 struct tftp_state_data *tftpc;
1065 struct imap_conn imapc;
1066 struct pop3_conn pop3c;
1067 struct smtp_conn smtpc;
1068 struct rtsp_conn rtspc;
1069 struct smb_conn smbc;
1071 struct ldapconninfo *ldapc;
1072 struct mqtt_conn mqtt;
1075 int cselect_bits; /* bitmask of socket events */
1076 int waitfor; /* current READ/WRITE bits to wait for */
1078 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1079 int socks5_gssapi_enctype;
1082 /* When this connection is created, store the conditions for the local end
1083 bind. This is stored before the actual bind and before any connection is
1084 made and will serve the purpose of being used for comparison reasons so
1085 that subsequent bound-requested connections aren't accidentally re-using
1086 wrong connections. */
1088 unsigned short localport;
1090 struct http_connect_state *connect_state; /* for HTTP CONNECT */
1091 struct connectbundle *bundle; /* The bundle we are member of */
1092 int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */
1093 #ifdef USE_UNIX_SOCKETS
1094 char *unix_domain_socket;
1098 /* The end of connectdata. */
1101 * Struct to keep statistical and informational data.
1102 * All variables in this struct must be initialized/reset in Curl_initinfo().
1105 int httpcode; /* Recent HTTP, FTP, RTSP or SMTP response code */
1106 int httpproxycode; /* response code from proxy when received separate */
1107 int httpversion; /* the http version number X.Y = X*10+Y */
1108 time_t filetime; /* If requested, this is might get set. Set to -1 if the
1109 time was unretrievable. */
1110 curl_off_t header_size; /* size of read header(s) in bytes */
1111 curl_off_t request_size; /* the amount of bytes sent in the request(s) */
1112 unsigned long proxyauthavail; /* what proxy auth types were announced */
1113 unsigned long httpauthavail; /* what host auth types were announced */
1114 long numconnects; /* how many new connection did libcurl created */
1115 char *contenttype; /* the content type of the object */
1116 char *wouldredirect; /* URL this would've been redirected to if asked to */
1117 curl_off_t retry_after; /* info from Retry-After: header */
1119 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
1120 and, 'conn_local_port' are copied over from the connectdata struct in
1121 order to allow curl_easy_getinfo() to return this information even when
1122 the session handle is no longer associated with a connection, and also
1123 allow curl_easy_reset() to clear this information from the session handle
1124 without disturbing information which is still alive, and that might be
1125 reused, in the connection cache. */
1127 char conn_primary_ip[MAX_IPADR_LEN];
1128 long conn_primary_port;
1129 char conn_local_ip[MAX_IPADR_LEN];
1130 long conn_local_port;
1131 const char *conn_scheme;
1132 unsigned int conn_protocol;
1133 struct curl_certinfo certs; /* info about the certs, only populated in
1134 OpenSSL, GnuTLS, Schannel, NSS and GSKit
1135 builds. Asked for with CURLOPT_CERTINFO
1136 / CURLINFO_CERTINFO */
1137 CURLproxycode pxcode;
1138 BIT(timecond); /* set to TRUE if the time condition didn't match, which
1139 thus made the document NOT get fetched */
1144 time_t lastshow; /* time() of the last displayed progress meter or NULL to
1145 force redraw at next call */
1146 curl_off_t size_dl; /* total expected size */
1147 curl_off_t size_ul; /* total expected size */
1148 curl_off_t downloaded; /* transferred so far */
1149 curl_off_t uploaded; /* transferred so far */
1151 curl_off_t current_speed; /* uses the currently fastest transfer */
1153 int width; /* screen width at download start */
1154 int flags; /* see progress.h */
1156 timediff_t timespent;
1161 timediff_t t_nslookup;
1162 timediff_t t_connect;
1163 timediff_t t_appconnect;
1164 timediff_t t_pretransfer;
1165 timediff_t t_starttransfer;
1166 timediff_t t_redirect;
1168 struct curltime start;
1169 struct curltime t_startsingle;
1170 struct curltime t_startop;
1171 struct curltime t_acceptdata;
1174 /* upload speed limit */
1175 struct curltime ul_limit_start;
1176 curl_off_t ul_limit_size;
1177 /* download speed limit */
1178 struct curltime dl_limit_start;
1179 curl_off_t dl_limit_size;
1181 #define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */
1183 curl_off_t speeder[ CURR_TIME ];
1184 struct curltime speeder_time[ CURR_TIME ];
1186 BIT(callback); /* set when progress callback is used */
1187 BIT(is_t_startransfer_set);
1191 HTTPREQ_NONE, /* first in list */
1194 HTTPREQ_POST_FORM, /* we make a difference internally */
1195 HTTPREQ_POST_MIME, /* we make a difference internally */
1198 HTTPREQ_LAST /* last in list */
1202 RTSPREQ_NONE, /* first in list */
1210 RTSPREQ_GET_PARAMETER,
1211 RTSPREQ_SET_PARAMETER,
1214 RTSPREQ_LAST /* last in list */
1218 unsigned long want; /* Bitmask set to the authentication methods wanted by
1219 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1220 unsigned long picked;
1221 unsigned long avail; /* Bitmask for what the server reports to support for
1223 BIT(done); /* TRUE when the auth phase is done and ready to do the
1225 BIT(multipass); /* TRUE if this is not yet authenticated but within the
1226 auth multipass negotiation */
1227 BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it
1228 should be RFC compliant */
1231 struct Curl_http2_dep {
1232 struct Curl_http2_dep *next;
1233 struct Curl_easy *data;
1237 * This struct is for holding data that was attempted to get sent to the user's
1238 * callback but is held due to pausing. One instance per type (BOTH, HEADER,
1243 int type; /* type of the 'tempwrite' buffer as a bitmask that is used with
1244 Curl_client_write() */
1251 EXPIRE_CONNECTTIMEOUT,
1252 EXPIRE_DNS_PER_NAME, /* family1 */
1253 EXPIRE_DNS_PER_NAME2, /* family2 */
1254 EXPIRE_HAPPY_EYEBALLS_DNS, /* See asyn-ares.c */
1255 EXPIRE_HAPPY_EYEBALLS,
1256 EXPIRE_MULTI_PENDING,
1262 EXPIRE_LAST /* not an actual timer, used as a marker only */
1268 TRAILERS_INITIALIZED,
1275 * One instance for each timeout an easy handle can set.
1278 struct Curl_llist_element list;
1279 struct curltime time;
1283 /* individual pieces of the URL */
1296 /* Points to the connection cache */
1297 struct conncache *conn_cache;
1299 int retrycount; /* number of retries on a new connection */
1301 /* buffers to store authentication data in, as parsed from input options */
1302 struct curltime keeps_speed; /* for the progress meter really */
1304 long lastconnect_id; /* The last connection, -1 if undefined */
1305 struct dynbuf headerb; /* buffer to store headers in */
1307 char *buffer; /* download buffer */
1308 char *ulbuf; /* allocated upload buffer or NULL */
1309 curl_off_t current_speed; /* the ProgressShow() function sets this,
1311 char *first_host; /* host name of the first (not followed) request.
1312 if set, this should be the host name that we will
1313 sent authorization to, no else. Used to make Location:
1314 following not keep sending user+password... This is
1317 int first_remote_port; /* remote port of the first (not followed) request */
1318 struct Curl_ssl_session *session; /* array of 'max_ssl_sessions' size */
1319 long sessionage; /* number of the most recent session */
1320 unsigned int tempcount; /* number of entries in use in tempwrite, 0 - 3 */
1321 struct tempbuf tempwrite[3]; /* BOTH, HEADER, BODY */
1322 char *scratch; /* huge buffer[set.buffer_size*2] for upload CRLF replacing */
1323 int os_errno; /* filled in with errno whenever an error occurs */
1325 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1326 void (*prev_signal)(int sig);
1328 struct digestdata digest; /* state data for host Digest auth */
1329 struct digestdata proxydigest; /* state data for proxy Digest auth */
1331 struct auth authhost; /* auth details for host */
1332 struct auth authproxy; /* auth details for proxy */
1333 void *resolver; /* resolver state, if it is used in the URL state -
1334 ares_channel f.e. */
1336 #if defined(USE_OPENSSL)
1337 /* void instead of ENGINE to avoid bleeding OpenSSL into this header */
1339 #endif /* USE_OPENSSL */
1340 struct curltime expiretime; /* set this with Curl_expire() only */
1341 struct Curl_tree timenode; /* for the splay stuff */
1342 struct Curl_llist timeoutlist; /* list of pending timeouts */
1343 struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */
1345 /* a place to store the most recently set FTP entrypath */
1346 char *most_recent_ftp_entrypath;
1348 int httpversion; /* the lowest HTTP version*10 reported by any server
1349 involved in this request */
1351 #if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__)
1352 /* do FTP line-end conversions on most platforms */
1353 #define CURL_DO_LINEEND_CONV
1354 /* for FTP downloads: track CRLF sequences that span blocks */
1355 BIT(prev_block_had_trailing_cr);
1356 /* for FTP downloads: how many CRLFs did we converted to LFs? */
1357 curl_off_t crlf_conversions;
1359 char *range; /* range, if used. See README for detailed specification on
1361 curl_off_t resume_from; /* continue [ftp] transfer from here */
1363 /* This RTSP state information survives requests and connections */
1364 long rtsp_next_client_CSeq; /* the session's next client CSeq */
1365 long rtsp_next_server_CSeq; /* the session's next server CSeq */
1366 long rtsp_CSeq_recv; /* most recent CSeq received */
1368 curl_off_t infilesize; /* size of file to upload, -1 means unknown.
1369 Copied from set.filesize at start of operation */
1371 size_t drain; /* Increased when this stream has data to read, even if its
1372 socket is not necessarily is readable. Decreased when
1375 curl_read_callback fread_func; /* read callback/function */
1376 void *in; /* CURLOPT_READDATA */
1378 struct Curl_easy *stream_depends_on;
1380 CURLU *uh; /* URL handle for the current parsed URL */
1381 struct urlpieces up;
1382 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
1383 #ifndef CURL_DISABLE_HTTP
1384 size_t trailers_bytes_sent;
1385 struct dynbuf trailers_buf; /* a buffer containing the compiled trailing
1388 trailers_state trailers_state; /* whether we are sending trailers
1389 and what stage are we at */
1391 /* Dynamically allocated strings, MUST be freed before this struct is
1393 struct dynamically_allocated_data {
1396 char *accept_encoding;
1402 char *rtsp_transport;
1403 char *te; /* TE: request header */
1407 BIT(conncache_lock);
1409 /* when curl_easy_perform() is called, the multi handle is "owned" by
1410 the easy handle so curl_easy_cleanup() on such an easy handle will
1411 also close the multi handle! */
1412 BIT(multi_owned_by_easy);
1414 BIT(this_is_a_follow); /* this is a followed Location: request */
1415 BIT(refused_stream); /* this was refused, try again */
1416 BIT(errorbuf); /* Set to TRUE if the error buffer is already filled in.
1417 This must be set to FALSE every time _easy_perform() is
1419 BIT(allow_port); /* Is set.use_port allowed to take effect or not. This
1420 is always set TRUE when curl_easy_perform() is called. */
1421 BIT(authproblem); /* TRUE if there's some problem authenticating */
1422 /* set after initial USER failure, to prevent an authentication loop */
1423 BIT(ftp_trying_alternative);
1424 BIT(wildcardmatch); /* enable wildcard matching */
1425 BIT(expect100header); /* TRUE if we added Expect: 100-continue */
1426 BIT(disableexpect); /* TRUE if Expect: is disabled due to a previous
1429 BIT(rangestringalloc); /* the range string is malloc()'ed */
1430 BIT(done); /* set to FALSE when Curl_init_do() is called and set to TRUE
1431 when multi_done() is called, to prevent multi_done() to get
1432 invoked twice when the multi interface is used. */
1433 BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1434 BIT(previouslypending); /* this transfer WAS in the multi->pending queue */
1440 * This 'DynamicStatic' struct defines dynamic states that actually change
1441 * values in the 'UserDefined' area, which MUST be taken into consideration
1442 * if the UserDefined struct is cloned or similar. You can probably just
1443 * copy these, but each one indicate a special action on other data.
1446 struct DynamicStatic {
1447 char *url; /* work URL, copied from UserDefined */
1448 char *referer; /* referer string */
1449 struct curl_slist *cookielist; /* list of cookie files set by
1450 curl_easy_setopt(COOKIEFILE) calls */
1451 struct curl_slist *resolve; /* set to point to the set.resolve list when
1452 this should be dealt with in pretransfer */
1453 BIT(url_alloc); /* URL string is malloc()'ed */
1454 BIT(referer_alloc); /* referer string is malloc()ed */
1455 BIT(wildcard_resolve); /* Set to true if any resolve change is a
1460 * This 'UserDefined' struct must only contain data that is set once to go
1461 * for many (perhaps) independent connections. Values that are generated or
1462 * calculated internally for the "session handle" MUST be defined within the
1463 * 'struct UrlState' instead. The only exceptions MUST note the changes in
1464 * the 'DynamicStatic' struct.
1465 * Character pointer fields point to dynamic storage, unless otherwise stated.
1468 struct Curl_multi; /* declared and used only in multi.c */
1471 * This enumeration MUST not use conditional directives (#ifdefs), new
1472 * null terminated strings MUST be added to the enumeration immediately
1473 * before STRING_LASTZEROTERMINATED, binary fields immediately before
1474 * STRING_LAST. When doing so, ensure that the packages/OS400/chkstring.c
1475 * test is updated and applicable changes for EBCDIC to ASCII conversion
1476 * are catered for in curl_easy_setopt_ccsid()
1479 STRING_CERT_ORIG, /* client certificate file name */
1480 STRING_CERT_PROXY, /* client certificate file name */
1481 STRING_CERT_TYPE_ORIG, /* format for certificate (default: PEM)*/
1482 STRING_CERT_TYPE_PROXY, /* format for certificate (default: PEM)*/
1483 STRING_COOKIE, /* HTTP cookie string to send */
1484 STRING_COOKIEJAR, /* dump all cookies to this file */
1485 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1486 STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL doesn't specify */
1487 STRING_DEVICE, /* local network interface/address to use */
1488 STRING_ENCODING, /* Accept-Encoding string */
1489 STRING_FTP_ACCOUNT, /* ftp account data */
1490 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1491 STRING_FTPPORT, /* port to send with the FTP PORT command */
1492 STRING_KEY_ORIG, /* private key file name */
1493 STRING_KEY_PROXY, /* private key file name */
1494 STRING_KEY_PASSWD_ORIG, /* plain text private key password */
1495 STRING_KEY_PASSWD_PROXY, /* plain text private key password */
1496 STRING_KEY_TYPE_ORIG, /* format for private key (default: PEM) */
1497 STRING_KEY_TYPE_PROXY, /* format for private key (default: PEM) */
1498 STRING_KRB_LEVEL, /* krb security level */
1499 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1501 STRING_PROXY, /* proxy to use */
1502 STRING_PRE_PROXY, /* pre socks proxy to use */
1503 STRING_SET_RANGE, /* range, if used */
1504 STRING_SET_REFERER, /* custom string for the HTTP referer field */
1505 STRING_SET_URL, /* what original URL to work on */
1506 STRING_SSL_CAPATH_ORIG, /* CA directory name (doesn't work on windows) */
1507 STRING_SSL_CAPATH_PROXY, /* CA directory name (doesn't work on windows) */
1508 STRING_SSL_CAFILE_ORIG, /* certificate file to verify peer against */
1509 STRING_SSL_CAFILE_PROXY, /* certificate file to verify peer against */
1510 STRING_SSL_PINNEDPUBLICKEY_ORIG, /* public key file to verify peer against */
1511 STRING_SSL_PINNEDPUBLICKEY_PROXY, /* public key file to verify proxy */
1512 STRING_SSL_CIPHER_LIST_ORIG, /* list of ciphers to use */
1513 STRING_SSL_CIPHER_LIST_PROXY, /* list of ciphers to use */
1514 STRING_SSL_CIPHER13_LIST_ORIG, /* list of TLS 1.3 ciphers to use */
1515 STRING_SSL_CIPHER13_LIST_PROXY, /* list of TLS 1.3 ciphers to use */
1516 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */
1517 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */
1518 STRING_USERAGENT, /* User-Agent string */
1519 STRING_SSL_CRLFILE_ORIG, /* crl file to check certificate */
1520 STRING_SSL_CRLFILE_PROXY, /* crl file to check certificate */
1521 STRING_SSL_ISSUERCERT_ORIG, /* issuer cert file to check certificate */
1522 STRING_SSL_ISSUERCERT_PROXY, /* issuer cert file to check certificate */
1523 STRING_SSL_ENGINE, /* name of ssl engine */
1524 STRING_USERNAME, /* <username>, if used */
1525 STRING_PASSWORD, /* <password>, if used */
1526 STRING_OPTIONS, /* <options>, if used */
1527 STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1528 STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1529 STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1531 STRING_RTSP_SESSION_ID, /* Session ID to use */
1532 STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1533 STRING_RTSP_TRANSPORT, /* Transport for this session */
1535 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1536 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1537 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */
1538 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */
1540 STRING_PROXY_SERVICE_NAME, /* Proxy service name */
1541 STRING_SERVICE_NAME, /* Service name */
1545 STRING_TLSAUTH_USERNAME_ORIG, /* TLS auth <username> */
1546 STRING_TLSAUTH_USERNAME_PROXY, /* TLS auth <username> */
1547 STRING_TLSAUTH_PASSWORD_ORIG, /* TLS auth <password> */
1548 STRING_TLSAUTH_PASSWORD_PROXY, /* TLS auth <password> */
1550 STRING_BEARER, /* <bearer>, if used */
1552 STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */
1554 STRING_TARGET, /* CURLOPT_REQUEST_TARGET */
1555 STRING_DOH, /* CURLOPT_DOH_URL */
1557 STRING_ALTSVC, /* CURLOPT_ALTSVC */
1559 STRING_SASL_AUTHZID, /* CURLOPT_SASL_AUTHZID */
1561 STRING_TEMP_URL, /* temp URL storage for proxy use */
1564 STRING_DNS_INTERFACE,
1565 STRING_DNS_LOCAL_IP4,
1566 STRING_DNS_LOCAL_IP6,
1567 STRING_SSL_EC_CURVES,
1569 /* -- end of null-terminated strings -- */
1571 STRING_LASTZEROTERMINATED,
1573 /* -- below this are pointers to binary data that cannot be strdup'ed. --- */
1575 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1578 STRING_LAST /* not used, just an end-of-list marker */
1586 BLOB_SSL_ISSUERCERT_ORIG,
1587 BLOB_SSL_ISSUERCERT_PROXY,
1591 /* callback that gets called when this easy handle is completed within a multi
1592 handle. Only used for internally created transfers, like for example
1594 typedef int (*multidone_func)(struct Curl_easy *easy, CURLcode result);
1596 struct UserDefined {
1597 FILE *err; /* the stderr user data goes here */
1598 void *debugdata; /* the data that will be passed to fdebug */
1599 char *errorbuffer; /* (Static) store failure messages in here */
1600 long proxyport; /* If non-zero, use this port number by default. If the
1601 proxy string features a ":[port]" that one will override
1603 void *out; /* CURLOPT_WRITEDATA */
1604 void *in_set; /* CURLOPT_READDATA */
1605 void *writeheader; /* write the header to this if non-NULL */
1606 void *rtp_out; /* write RTP to this if non-NULL */
1607 long use_port; /* which port to use (when not using default) */
1608 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
1609 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
1610 unsigned long socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
1611 long followlocation; /* as in HTTP Location: */
1612 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1615 int keep_post; /* keep POSTs as POSTs after a 30x request; each
1616 bit represents a request, from 301 to 303 */
1617 void *postfields; /* if POST, set the fields' values here */
1618 curl_seek_callback seek_func; /* function that seeks the input */
1619 curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1620 of strlen(), and then the data *may* be binary
1621 (contain zero bytes) */
1622 unsigned short localport; /* local port number to bind to */
1623 int localportrange; /* number of additional port numbers to test in case the
1624 'localport' one can't be bind()ed */
1625 curl_write_callback fwrite_func; /* function that stores the output */
1626 curl_write_callback fwrite_header; /* function that stores headers */
1627 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1628 curl_read_callback fread_func_set; /* function that reads the input */
1629 curl_progress_callback fprogress; /* OLD and deprecated progress callback */
1630 curl_xferinfo_callback fxferinfo; /* progress callback */
1631 curl_debug_callback fdebug; /* function that write informational data */
1632 curl_ioctl_callback ioctl_func; /* function for I/O control */
1633 curl_sockopt_callback fsockopt; /* function for setting socket options */
1634 void *sockopt_client; /* pointer to pass to the socket options callback */
1635 curl_opensocket_callback fopensocket; /* function for checking/translating
1636 the address and opening the
1638 void *opensocket_client;
1639 curl_closesocket_callback fclosesocket; /* function for closing the
1641 void *closesocket_client;
1643 void *seek_client; /* pointer to pass to the seek callback */
1644 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */
1645 /* function to convert from the network encoding: */
1646 curl_conv_callback convfromnetwork;
1647 /* function to convert to the network encoding: */
1648 curl_conv_callback convtonetwork;
1649 /* function to convert from UTF-8 encoding: */
1650 curl_conv_callback convfromutf8;
1652 void *progress_client; /* pointer to pass to the progress callback */
1653 void *ioctl_client; /* pointer to pass to the ioctl callback */
1654 long timeout; /* in milliseconds, 0 means no timeout */
1655 long connecttimeout; /* in milliseconds, 0 means no timeout */
1656 long accepttimeout; /* in milliseconds, 0 means no timeout */
1657 long happy_eyeballs_timeout; /* in milliseconds, 0 is a valid value */
1658 long server_response_timeout; /* in milliseconds, 0 means no timeout */
1659 long maxage_conn; /* in seconds, max idle time to allow a connection that
1661 long tftp_blksize; /* in bytes, 0 means use default */
1662 curl_off_t filesize; /* size of file to upload, -1 means unknown */
1663 long low_speed_limit; /* bytes/second */
1664 long low_speed_time; /* number of seconds */
1665 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1666 curl_off_t max_recv_speed; /* high speed limit in bytes/second for
1668 curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1669 struct curl_slist *headers; /* linked list of extra headers */
1670 struct curl_slist *proxyheaders; /* linked list of extra CONNECT headers */
1671 struct curl_httppost *httppost; /* linked list of old POST data */
1672 curl_mimepart mimepost; /* MIME/POST data. */
1673 struct curl_slist *quote; /* after connection is established */
1674 struct curl_slist *postquote; /* after the transfer */
1675 struct curl_slist *prequote; /* before the transfer, after type */
1676 struct curl_slist *source_quote; /* 3rd party quote */
1677 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before
1678 the transfer on source host */
1679 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after
1680 the transfer on source host */
1681 struct curl_slist *telnet_options; /* linked list of telnet options */
1682 struct curl_slist *resolve; /* list of names to add/remove from
1684 struct curl_slist *connect_to; /* list of host:port mappings to override
1685 the hostname and port to connect to */
1686 curl_TimeCond timecondition; /* kind of time/date comparison */
1687 time_t timevalue; /* what time to compare with */
1688 Curl_HttpReq method; /* what kind of HTTP request (if any) is this */
1689 long httpversion; /* when non-zero, a specific HTTP version requested to
1690 be used in the library's request(s) */
1691 struct ssl_config_data ssl; /* user defined SSL stuff */
1692 #ifndef CURL_DISABLE_PROXY
1693 struct ssl_config_data proxy_ssl; /* user defined SSL stuff for proxy */
1695 struct ssl_general_config general_ssl; /* general user defined SSL stuff */
1696 curl_proxytype proxytype; /* what kind of proxy that is in use */
1697 long dns_cache_timeout; /* DNS cache timeout */
1698 long buffer_size; /* size of receive buffer to use */
1699 size_t upload_buffer_size; /* size of upload buffer to use,
1700 keep it >= CURL_MAX_WRITE_SIZE */
1701 void *private_data; /* application-private data */
1702 struct curl_slist *http200aliases; /* linked list of aliases for http200 */
1703 long ipver; /* the CURL_IPRESOLVE_* defines in the public header file
1704 0 - whatever, 1 - v2, 2 - v6 */
1705 curl_off_t max_filesize; /* Maximum file size to download */
1706 #ifndef CURL_DISABLE_FTP
1707 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */
1708 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */
1709 curl_ftpccc ftp_ccc; /* FTP CCC options */
1711 int ftp_create_missing_dirs; /* 1 - create directories that don't exist
1712 2 - the same but also allow MKD to fail once
1714 curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1715 void *ssh_keyfunc_userp; /* custom pointer to callback */
1716 enum CURL_NETRC_OPTION
1717 use_netrc; /* defined in include/curl.h */
1718 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1719 IMAP or POP3 or others! */
1720 long new_file_perms; /* Permissions to use when creating remote files */
1721 long new_directory_perms; /* Permissions to use when creating remote dirs */
1722 long ssh_auth_types; /* allowed SSH auth types */
1723 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */
1724 struct curl_blob *blobs[BLOB_LAST];
1725 unsigned int scope_id; /* Scope id for IPv6 */
1726 long allowed_protocols;
1727 long redir_protocols;
1728 struct curl_slist *mail_rcpt; /* linked list of mail recipients */
1729 /* Common RTSP header options */
1730 Curl_RtspReq rtspreq; /* RTSP request type */
1731 long rtspversion; /* like httpversion, for RTSP */
1732 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer
1734 curl_chunk_end_callback chunk_end; /* called after part transferring
1736 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1737 to pattern (e.g. if WILDCARDMATCH is on) */
1740 long gssapi_delegation; /* GSS-API credential delegation, see the
1741 documentation of CURLOPT_GSSAPI_DELEGATION */
1743 long tcp_keepidle; /* seconds in idle before sending keepalive probe */
1744 long tcp_keepintvl; /* seconds between TCP keepalive probes */
1746 size_t maxconnects; /* Max idle connections in the connection cache */
1748 long expect_100_timeout; /* in milliseconds */
1749 struct Curl_easy *stream_depends_on;
1751 struct Curl_http2_dep *stream_dependents;
1753 curl_resolver_start_callback resolver_start; /* optional callback called
1754 before resolver start */
1755 void *resolver_start_client; /* pointer to pass to resolver start callback */
1756 long upkeep_interval_ms; /* Time between calls for connection upkeep. */
1757 multidone_func fmultidone;
1758 struct Curl_easy *dohfor; /* this is a DoH request for that transfer */
1759 CURLU *uh; /* URL handle for the current parsed URL */
1760 void *trailer_data; /* pointer to pass to trailer data callback */
1761 curl_trailer_callback trailer_callback; /* trailing data callback */
1762 BIT(is_fread_set); /* has read callback been set to non-NULL? */
1763 BIT(is_fwrite_set); /* has write callback been set to non-NULL? */
1764 BIT(free_referer); /* set TRUE if 'referer' points to a string we
1766 BIT(tftp_no_options); /* do not send TFTP options requests */
1767 BIT(sep_headers); /* handle host and proxy headers separately */
1768 BIT(cookiesession); /* new cookie session? */
1769 BIT(crlf); /* convert crlf on ftp upload(?) */
1770 BIT(strip_path_slash); /* strip off initial slash from path */
1771 BIT(ssh_compression); /* enable SSH compression */
1773 /* Here follows boolean settings that define how to behave during
1774 this session. They are STATIC, set by libcurl users or at least initially
1775 and they don't change during operations. */
1776 BIT(get_filetime); /* get the time and get of the remote file */
1777 BIT(tunnel_thru_httpproxy); /* use CONNECT through a HTTP proxy */
1778 BIT(prefer_ascii); /* ASCII rather than binary */
1779 BIT(ftp_append); /* append, not overwrite, on upload */
1780 BIT(ftp_list_only); /* switch FTP command for listing directories */
1781 #ifndef CURL_DISABLE_FTP
1782 BIT(ftp_use_port); /* use the FTP PORT command */
1783 BIT(ftp_use_epsv); /* if EPSV is to be attempted or not */
1784 BIT(ftp_use_eprt); /* if EPRT is to be attempted or not */
1785 BIT(ftp_use_pret); /* if PRET is to be used before PASV or not */
1786 BIT(ftp_skip_ip); /* skip the IP address the FTP server passes on to
1789 BIT(hide_progress); /* don't use the progress meter */
1790 BIT(http_fail_on_error); /* fail on HTTP error codes >= 400 */
1791 BIT(http_keep_sending_on_error); /* for HTTP status codes >= 300 */
1792 BIT(http_follow_location); /* follow HTTP redirects */
1793 BIT(http_transfer_encoding); /* request compressed HTTP transfer-encoding */
1794 BIT(allow_auth_to_other_hosts);
1795 BIT(include_header); /* include received protocol headers in data output */
1796 BIT(http_set_referer); /* is a custom referer used */
1797 BIT(http_auto_referer); /* set "correct" referer when following
1799 BIT(opt_no_body); /* as set with CURLOPT_NOBODY */
1800 BIT(upload); /* upload request */
1801 BIT(verbose); /* output verbosity */
1802 BIT(krb); /* Kerberos connection requested */
1803 BIT(reuse_forbid); /* forbidden to be reused, close after use */
1804 BIT(reuse_fresh); /* do not re-use an existing connection */
1805 BIT(no_signal); /* do not use any signal/alarm handler */
1806 BIT(tcp_nodelay); /* whether to enable TCP_NODELAY or not */
1807 BIT(ignorecl); /* ignore content length */
1808 BIT(connect_only); /* make connection, let application use the socket */
1809 BIT(http_te_skip); /* pass the raw body data to the user, even when
1810 transfer-encoded (chunked, compressed) */
1811 BIT(http_ce_skip); /* pass the raw body data to the user, even when
1812 content-encoded (chunked, compressed) */
1813 BIT(proxy_transfer_mode); /* set transfer mode (;type=<a|i>) when doing
1814 FTP via an HTTP proxy */
1815 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1816 BIT(socks5_gssapi_nec); /* Flag to support NEC SOCKS5 server */
1818 BIT(sasl_ir); /* Enable/disable SASL initial response */
1819 BIT(wildcard_enabled); /* enable wildcard matching */
1820 BIT(tcp_keepalive); /* use TCP keepalives */
1821 BIT(tcp_fastopen); /* use TCP Fast Open */
1822 BIT(ssl_enable_npn); /* TLS NPN extension? */
1823 BIT(ssl_enable_alpn);/* TLS ALPN extension? */
1824 BIT(path_as_is); /* allow dotdots? */
1825 BIT(pipewait); /* wait for multiplex status before starting a new
1827 BIT(suppress_connect_headers); /* suppress proxy CONNECT response headers
1828 from user callbacks */
1829 BIT(dns_shuffle_addresses); /* whether to shuffle addresses before use */
1830 BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1831 BIT(haproxyprotocol); /* whether to send HAProxy PROXY protocol v1
1833 BIT(abstract_unix_socket);
1834 BIT(disallow_username_in_url); /* disallow username in url */
1835 BIT(doh); /* DNS-over-HTTPS enabled */
1836 BIT(doh_get); /* use GET for DoH requests, instead of POST */
1837 BIT(http09_allowed); /* allow HTTP/0.9 responses */
1838 BIT(mail_rcpt_allowfails); /* allow RCPT TO command to fail for some
1843 struct Curl_hash *hostcache;
1845 HCACHE_NONE, /* not pointing to anything */
1846 HCACHE_MULTI, /* points to a shared one in the multi handle */
1847 HCACHE_SHARED /* points to a shared one in a shared object */
1852 * The 'connectdata' struct MUST have all the connection oriented stuff as we
1853 * may have several simultaneous connections and connection structs in memory.
1855 * The 'struct UserDefined' must only contain data that is set once to go for
1856 * many (perhaps) independent connections. Values that are generated or
1857 * calculated internally for the "session handle" must be defined within the
1858 * 'struct UrlState' instead.
1862 /* first, two fields for the linked list of these */
1863 struct Curl_easy *next;
1864 struct Curl_easy *prev;
1866 struct connectdata *conn;
1867 struct Curl_llist_element connect_queue;
1868 struct Curl_llist_element conn_queue; /* list per connectdata */
1870 CURLMstate mstate; /* the handle's state */
1871 CURLcode result; /* previous result */
1873 struct Curl_message msg; /* A single posted message. */
1875 /* Array with the plain socket numbers this handle takes care of, in no
1876 particular order. Note that all sockets are added to the sockhash, where
1877 the state etc are also kept. This array is mostly used to detect when a
1878 socket is to be removed from the hash. See singlesocket(). */
1879 curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE];
1880 int actions[MAX_SOCKSPEREASYHANDLE]; /* action for each socket in
1885 struct Curl_multi *multi; /* if non-NULL, points to the multi handle
1886 struct to which this "belongs" when used by
1887 the multi interface */
1888 struct Curl_multi *multi_easy; /* if non-NULL, points to the multi handle
1889 struct to which this "belongs" when used
1890 by the easy interface */
1891 struct Curl_share *share; /* Share, handles global variable mutexing */
1893 struct PslCache *psl; /* The associated PSL cache. */
1895 struct SingleRequest req; /* Request-specific data */
1896 struct UserDefined set; /* values set by the libcurl user */
1897 struct DynamicStatic change; /* possibly modified userdefined data */
1898 struct CookieInfo *cookies; /* the cookies, read from files and servers.
1899 NOTE that the 'cookie' field in the
1900 UserDefined struct defines if the "engine"
1901 is to be used or not. */
1903 struct altsvcinfo *asi; /* the alt-svc cache */
1905 struct Progress progress; /* for all the progress meter data */
1906 struct UrlState state; /* struct for fields used for state info and
1907 other dynamic purposes */
1908 #ifndef CURL_DISABLE_FTP
1909 struct WildcardData wildcard; /* wildcard download state info */
1911 struct PureInfo info; /* stats, reports and info data */
1912 struct curl_tlssessioninfo tsi; /* Information about the TLS session, only
1913 valid after a client has asked for it */
1914 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
1915 iconv_t outbound_cd; /* for translating to the network encoding */
1916 iconv_t inbound_cd; /* for translating from the network encoding */
1917 iconv_t utf8_cd; /* for translating to UTF8 */
1918 #endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
1919 unsigned int magic; /* set to a CURLEASY_MAGIC_NUMBER */
1922 #define LIBCURL_NAME "libcurl"
1924 #endif /* HEADER_CURL_URLDATA_H */
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