urldata.h@ 108048

Last change on this file since 108048 was 108048, checked in by vboxsync, 7 weeks ago
curl-8.11.1: Applied and adjusted our curl changes to 8.7.1. jiraref:VBP-1535
Property svn:eol-style set to `native`
File size: 75.6 KB

Line
1	#ifndef HEADER_CURL_URLDATA_H
2	#define HEADER_CURL_URLDATA_H
3	/***************************************************************************
4	* _ _ ____ _
5	* Project ___\| \| \| \| _ \\| \|
6	* / __\| \| \| \| \|_) \| \|
7	* \| (__\| \|_\| \| _ <\| \|___
8	* \___\|\___/\|_\| \_\_____\|
9	*
10	* Copyright (C) Daniel Stenberg, <[email protected]>, et al.
11	*
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.se/docs/copyright.html.
15	*
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.
19	*
20	* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21	* KIND, either express or implied.
22	*
23	* SPDX-License-Identifier: curl
24	*
25	***************************************************************************/
26
27	/* This file is for lib internal stuff */
28
29	#include "curl_setup.h"
30
31	#define PORT_FTP 21
32	#define PORT_FTPS 990
33	#define PORT_TELNET 23
34	#define PORT_HTTP 80
35	#define PORT_HTTPS 443
36	#define PORT_DICT 2628
37	#define PORT_LDAP 389
38	#define PORT_LDAPS 636
39	#define PORT_TFTP 69
40	#define PORT_SSH 22
41	#define PORT_IMAP 143
42	#define PORT_IMAPS 993
43	#define PORT_POP3 110
44	#define PORT_POP3S 995
45	#define PORT_SMB 445
46	#define PORT_SMBS 445
47	#define PORT_SMTP 25
48	#define PORT_SMTPS 465 /* sometimes called SSMTP */
49	#define PORT_RTSP 554
50	#define PORT_RTMP 1935
51	#define PORT_RTMPT PORT_HTTP
52	#define PORT_RTMPS PORT_HTTPS
53	#define PORT_GOPHER 70
54	#define PORT_MQTT 1883
55
56	struct curl_trc_featt;
57
58	#ifdef USE_ECH
59	/* CURLECH_ bits for the tls_ech option */
60	# define CURLECH_DISABLE (1<<0)
61	# define CURLECH_GREASE (1<<1)
62	# define CURLECH_ENABLE (1<<2)
63	# define CURLECH_HARD (1<<3)
64	# define CURLECH_CLA_CFG (1<<4)
65	#endif
66
67	#ifndef CURL_DISABLE_WEBSOCKETS
68	/* CURLPROTO_GOPHERS (29) is the highest publicly used protocol bit number,
69	* the rest are internal information. If we use higher bits we only do this on
70	* platforms that have a >= 64-bit type and then we use such a type for the
71	* protocol fields in the protocol handler.
72	*/
73	#define CURLPROTO_WS (1<<30)
74	#define CURLPROTO_WSS ((curl_prot_t)1<<31)
75	#else
76	#define CURLPROTO_WS 0
77	#define CURLPROTO_WSS 0
78	#endif
79
80	/* the default protocols accepting a redirect to */
81	#define CURLPROTO_REDIR (CURLPROTO_HTTP \| CURLPROTO_HTTPS \| CURLPROTO_FTP \| \
82	CURLPROTO_FTPS)
83
84	/* This should be undefined once we need bit 32 or higher */
85	#define PROTO_TYPE_SMALL
86
87	#ifndef PROTO_TYPE_SMALL
88	typedef curl_off_t curl_prot_t;
89	#else
90	typedef unsigned int curl_prot_t;
91	#endif
92
93	/* This mask is for all the old protocols that are provided and defined in the
94	public header and shall exclude protocols added since which are not exposed
95	in the API */
96	#define CURLPROTO_MASK (0x3ffffff)
97
98	#define DICT_MATCH "/MATCH:"
99	#define DICT_MATCH2 "/M:"
100	#define DICT_MATCH3 "/FIND:"
101	#define DICT_DEFINE "/DEFINE:"
102	#define DICT_DEFINE2 "/D:"
103	#define DICT_DEFINE3 "/LOOKUP:"
104
105	#define CURL_DEFAULT_USER "anonymous"
106	#define CURL_DEFAULT_PASSWORD "[email protected]"
107
108	#if !defined(_WIN32) && !defined(MSDOS) && !defined(__EMX__)
109	/* do FTP line-end CRLF => LF conversions on platforms that prefer LF-only. It
110	also means: keep CRLF line endings on the CRLF platforms */
111	#define CURL_PREFER_LF_LINEENDS
112	#endif
113
114	/* Convenience defines for checking protocols or their SSL based version. Each
115	protocol handler should only ever have a single CURLPROTO_ in its protocol
116	field. */
117	#define PROTO_FAMILY_HTTP (CURLPROTO_HTTP\|CURLPROTO_HTTPS\|CURLPROTO_WS\| \
118	CURLPROTO_WSS)
119	#define PROTO_FAMILY_FTP (CURLPROTO_FTP\|CURLPROTO_FTPS)
120	#define PROTO_FAMILY_POP3 (CURLPROTO_POP3\|CURLPROTO_POP3S)
121	#define PROTO_FAMILY_SMB (CURLPROTO_SMB\|CURLPROTO_SMBS)
122	#define PROTO_FAMILY_SMTP (CURLPROTO_SMTP\|CURLPROTO_SMTPS)
123	#define PROTO_FAMILY_SSH (CURLPROTO_SCP\|CURLPROTO_SFTP)
124
125	#if !defined(CURL_DISABLE_FTP) \|\| defined(USE_SSH) \|\| \
126	!defined(CURL_DISABLE_POP3) \|\| !defined(CURL_DISABLE_FILE)
127	/* these protocols support CURLOPT_DIRLISTONLY */
128	#define CURL_LIST_ONLY_PROTOCOL 1
129	#endif
130
131	#define DEFAULT_CONNCACHE_SIZE 5
132
133	/* length of longest IPv6 address string including the trailing null */
134	#define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
135
136	/* Default FTP/IMAP etc response timeout in milliseconds */
137	#define RESP_TIMEOUT (120*1000)
138
139	/* Max string input length is a precaution against abuse and to detect junk
140	input easier and better. */
141	#define CURL_MAX_INPUT_LENGTH 8000000
142
143
144	#include "cookie.h"
145	#include "psl.h"
146	#include "formdata.h"
147
148	#ifdef HAVE_NETINET_IN_H
149	#include <netinet/in.h>
150	#endif
151	#ifdef HAVE_NETINET_IN6_H
152	#include <netinet/in6.h>
153	#endif
154
155	#include "timeval.h"
156
157	#include <curl/curl.h>
158
159	#include "http_chunks.h" /* for the structs and enum stuff */
160	#include "hostip.h"
161	#include "hash.h"
162	#include "splay.h"
163	#include "dynbuf.h"
164	#include "dynhds.h"
165	#include "request.h"
166	#include "netrc.h"
167
168	/* return the count of bytes sent, or -1 on error */
169	typedef ssize_t (Curl_send)(struct Curl_easy data, / transfer */
170	int sockindex, /* socketindex */
171	const void buf, / data to write */
172	size_t len, /* max amount to write */
173	bool eos, /* last chunk */
174	CURLcode err); / error to return */
175
176	/* return the count of bytes read, or -1 on error */
177	typedef ssize_t (Curl_recv)(struct Curl_easy data, / transfer */
178	int sockindex, /* socketindex */
179	char buf, / store data here */
180	size_t len, /* max amount to read */
181	CURLcode err); / error to return */
182
183	#ifdef USE_HYPER
184	typedef CURLcode (Curl_datastream)(struct Curl_easy data,
185	struct connectdata *conn,
186	int *didwhat,
187	int select_res);
188	#endif
189
190	#include "mime.h"
191	#include "imap.h"
192	#include "pop3.h"
193	#include "smtp.h"
194	#include "ftp.h"
195	#include "file.h"
196	#include "vssh/ssh.h"
197	#include "http.h"
198	#include "rtsp.h"
199	#include "smb.h"
200	#include "mqtt.h"
201	#include "ftplistparser.h"
202	#include "multihandle.h"
203	#include "c-hyper.h"
204	#include "cf-socket.h"
205
206	#ifdef HAVE_GSSAPI
207	# ifdef HAVE_GSSGNU
208	# include <gss.h>
209	# elif defined HAVE_GSSAPI_GSSAPI_H
210	# include <gssapi/gssapi.h>
211	# else
212	# include <gssapi.h>
213	# endif
214	# ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H
215	# include <gssapi/gssapi_generic.h>
216	# endif
217	#endif
218
219	#ifdef USE_LIBSSH2
220	#include <libssh2.h>
221	#include <libssh2_sftp.h>
222	#endif /* USE_LIBSSH2 */
223
224	#define READBUFFER_SIZE CURL_MAX_WRITE_SIZE
225	#define READBUFFER_MAX CURL_MAX_READ_SIZE
226	#define READBUFFER_MIN 1024
227
228	/* The default upload buffer size, should not be smaller than
229	CURL_MAX_WRITE_SIZE, as it needs to hold a full buffer as could be sent in
230	a write callback.
231
232	The size was 16KB for many years but was bumped to 64KB because it makes
233	libcurl able to do significantly faster uploads in some circumstances. Even
234	larger buffers can help further, but this is deemed a fair memory/speed
235	compromise. */
236	#define UPLOADBUFFER_DEFAULT 65536
237	#define UPLOADBUFFER_MAX (210241024)
238	#define UPLOADBUFFER_MIN CURL_MAX_WRITE_SIZE
239
240	#define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
241	#ifdef DEBUGBUILD
242	/* On a debug build, we want to fail hard on easy handles that
243	* are not NULL, but no longer have the MAGIC touch. This gives
244	* us early warning on things only discovered by valgrind otherwise. */
245	#define GOOD_EASY_HANDLE(x) \
246	(((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER))? TRUE: \
247	(DEBUGASSERT(!(x)), FALSE))
248	#else
249	#define GOOD_EASY_HANDLE(x) \
250	((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER))
251	#endif
252
253	#ifdef HAVE_GSSAPI
254	/* Types needed for krb5-ftp connections */
255	struct krb5buffer {
256	struct dynbuf buf;
257	size_t index;
258	BIT(eof_flag);
259	};
260
261	enum protection_level {
262	PROT_NONE, /* first in list */
263	PROT_CLEAR,
264	PROT_SAFE,
265	PROT_CONFIDENTIAL,
266	PROT_PRIVATE,
267	PROT_CMD,
268	PROT_LAST /* last in list */
269	};
270	#endif
271
272	/* SSL backend-specific data; declared differently by each SSL backend */
273	struct ssl_backend_data;
274
275	typedef enum {
276	CURL_SSL_PEER_DNS,
277	CURL_SSL_PEER_IPV4,
278	CURL_SSL_PEER_IPV6
279	} ssl_peer_type;
280
281	struct ssl_peer {
282	char hostname; / hostname for verification */
283	char dispname; / display version of hostname */
284	char sni; / SNI version of hostname or NULL if not usable */
285	ssl_peer_type type; /* type of the peer information */
286	int port; /* port we are talking to */
287	int transport; /* one of TRNSPRT_* defines */
288	};
289
290	struct ssl_primary_config {
291	char CApath; / certificate dir (does not work on Windows) */
292	char CAfile; / certificate to verify peer against */
293	char issuercert; / optional issuer certificate filename */
294	char *clientcert;
295	char cipher_list; / list of ciphers to use */
296	char cipher_list13; / list of TLS 1.3 cipher suites to use */
297	char *pinned_key;
298	char CRLfile; / CRL to check certificate revocation */
299	struct curl_blob *cert_blob;
300	struct curl_blob *ca_info_blob;
301	struct curl_blob *issuercert_blob;
302	#ifdef USE_TLS_SRP
303	char username; / TLS username (for, e.g., SRP) */
304	char password; / TLS password (for, e.g., SRP) */
305	#endif
306	char curves; / list of curves to use */
307	unsigned char ssl_options; /* the CURLOPT_SSL_OPTIONS bitmask */
308	unsigned int version_max; /* max supported version the client wants to use */
309	unsigned char version; /* what version the client wants to use */
310	BIT(verifypeer); /* set TRUE if this is desired */
311	BIT(verifyhost); /* set TRUE if CN/SAN must match hostname */
312	BIT(verifystatus); /* set TRUE if certificate status must be checked */
313	BIT(cache_session); /* cache session or not */
314	};
315
316	struct ssl_config_data {
317	struct ssl_primary_config primary;
318	long certverifyresult; /* result from the certificate verification */
319	curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
320	void fsslctxp; / parameter for call back */
321	char cert_type; / format for certificate (default: PEM)*/
322	char key; / private key filename */
323	struct curl_blob *key_blob;
324	char key_type; / format for private key (default: PEM) */
325	char key_passwd; / plain text private key password */
326	BIT(certinfo); /* gather lots of certificate info */
327	BIT(falsestart);
328	BIT(earlydata); /* use tls1.3 early data */
329	BIT(enable_beast); /* allow this flaw for interoperability's sake */
330	BIT(no_revoke); /* disable SSL certificate revocation checks */
331	BIT(no_partialchain); /* do not accept partial certificate chains */
332	BIT(revoke_best_effort); /* ignore SSL revocation offline/missing revocation
333	list errors */
334	BIT(native_ca_store); /* use the native ca store of operating system */
335	BIT(auto_client_cert); /* automatically locate and use a client
336	certificate for authentication (Schannel) */
337	};
338
339	struct ssl_general_config {
340	size_t max_ssl_sessions; /* SSL session id cache size */
341	int ca_cache_timeout; /* Certificate store cache timeout (seconds) */
342	};
343
344	typedef void Curl_ssl_sessionid_dtor(void *sessionid, size_t idsize);
345
346	/* information stored about one single SSL session */
347	struct Curl_ssl_session {
348	char name; / hostname for which this ID was used */
349	char conn_to_host; / hostname for the connection (may be NULL) */
350	const char scheme; / protocol scheme used */
351	char alpn; / APLN TLS negotiated protocol string */
352	void sessionid; / as returned from the SSL layer */
353	size_t idsize; /* if known, otherwise 0 */
354	Curl_ssl_sessionid_dtor sessionid_free; / free `sessionid` callback */
355	long age; /* just a number, the higher the more recent */
356	int remote_port; /* remote port */
357	int conn_to_port; /* remote port for the connection (may be -1) */
358	int transport; /* TCP or QUIC */
359	struct ssl_primary_config ssl_config; /* setup for this session */
360	};
361
362	#ifdef USE_WINDOWS_SSPI
363	#include "curl_sspi.h"
364	#endif
365
366	#ifndef CURL_DISABLE_DIGEST_AUTH
367	/* Struct used for Digest challenge-response authentication */
368	struct digestdata {
369	#if defined(USE_WINDOWS_SSPI)
370	BYTE *input_token;
371	size_t input_token_len;
372	CtxtHandle *http_context;
373	/* copy of user/passwd used to make the identity for http_context.
374	either may be NULL. */
375	char *user;
376	char *passwd;
377	#else
378	char *nonce;
379	char *cnonce;
380	char *realm;
381	char *opaque;
382	char *qop;
383	char *algorithm;
384	int nc; /* nonce count */
385	unsigned char algo;
386	BIT(stale); /* set true for re-negotiation */
387	BIT(userhash);
388	#endif
389	};
390	#endif
391
392	typedef enum {
393	NTLMSTATE_NONE,
394	NTLMSTATE_TYPE1,
395	NTLMSTATE_TYPE2,
396	NTLMSTATE_TYPE3,
397	NTLMSTATE_LAST
398	} curlntlm;
399
400	typedef enum {
401	GSS_AUTHNONE,
402	GSS_AUTHRECV,
403	GSS_AUTHSENT,
404	GSS_AUTHDONE,
405	GSS_AUTHSUCC
406	} curlnegotiate;
407
408	/* Struct used for GSSAPI (Kerberos V5) authentication */
409	#if defined(USE_KERBEROS5)
410	struct kerberos5data {
411	#if defined(USE_WINDOWS_SSPI)
412	CredHandle *credentials;
413	CtxtHandle *context;
414	TCHAR *spn;
415	SEC_WINNT_AUTH_IDENTITY identity;
416	SEC_WINNT_AUTH_IDENTITY *p_identity;
417	size_t token_max;
418	BYTE *output_token;
419	#else
420	gss_ctx_id_t context;
421	gss_name_t spn;
422	#endif
423	};
424	#endif
425
426	/* Struct used for SCRAM-SHA-1 authentication */
427	#ifdef USE_GSASL
428	#include <gsasl.h>
429	struct gsasldata {
430	Gsasl *ctx;
431	Gsasl_session *client;
432	};
433	#endif
434
435	/* Struct used for NTLM challenge-response authentication */
436	#if defined(USE_NTLM)
437	struct ntlmdata {
438	#ifdef USE_WINDOWS_SSPI
439	/* The sslContext is used for the Schannel bindings. The
440	* api is available on the Windows 7 SDK and later.
441	*/
442	#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
443	CtxtHandle *sslContext;
444	#endif
445	CredHandle *credentials;
446	CtxtHandle *context;
447	SEC_WINNT_AUTH_IDENTITY identity;
448	SEC_WINNT_AUTH_IDENTITY *p_identity;
449	size_t token_max;
450	BYTE *output_token;
451	BYTE *input_token;
452	size_t input_token_len;
453	TCHAR *spn;
454	#else
455	unsigned int flags;
456	unsigned char nonce[8];
457	unsigned int target_info_len;
458	void target_info; / TargetInfo received in the NTLM type-2 message */
459	#endif
460	};
461	#endif
462
463	/* Struct used for Negotiate (SPNEGO) authentication */
464	#ifdef USE_SPNEGO
465	struct negotiatedata {
466	#ifdef HAVE_GSSAPI
467	OM_uint32 status;
468	gss_ctx_id_t context;
469	gss_name_t spn;
470	gss_buffer_desc output_token;
471	struct dynbuf channel_binding_data;
472	#else
473	#ifdef USE_WINDOWS_SSPI
474	#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
475	CtxtHandle *sslContext;
476	#endif
477	DWORD status;
478	CredHandle *credentials;
479	CtxtHandle *context;
480	SEC_WINNT_AUTH_IDENTITY identity;
481	SEC_WINNT_AUTH_IDENTITY *p_identity;
482	TCHAR *spn;
483	size_t token_max;
484	BYTE *output_token;
485	size_t output_token_length;
486	#endif
487	#endif
488	BIT(noauthpersist);
489	BIT(havenoauthpersist);
490	BIT(havenegdata);
491	BIT(havemultiplerequests);
492	};
493	#endif
494
495	#ifdef CURL_DISABLE_PROXY
496	#define CONN_IS_PROXIED(x) 0
497	#else
498	#define CONN_IS_PROXIED(x) x->bits.proxy
499	#endif
500
501	/*
502	* Boolean values that concerns this connection.
503	*/
504	struct ConnectBits {
505	#ifndef CURL_DISABLE_PROXY
506	BIT(httpproxy); /* if set, this transfer is done through an HTTP proxy */
507	BIT(socksproxy); /* if set, this transfer is done through a socks proxy */
508	BIT(proxy_user_passwd); /* user+password for the proxy? */
509	BIT(tunnel_proxy); /* if CONNECT is used to "tunnel" through the proxy.
510	This is implicit when SSL-protocols are used through
511	proxies, but can also be enabled explicitly by
512	apps */
513	BIT(proxy); /* if set, this transfer is done through a proxy - any type */
514	#endif
515	/* always modify bits.close with the connclose() and connkeep() macros! */
516	BIT(close); /* if set, we close the connection after this request */
517	BIT(reuse); /* if set, this is a reused connection */
518	BIT(altused); /* this is an alt-svc "redirect" */
519	BIT(conn_to_host); /* if set, this connection has a "connect to host"
520	that overrides the host in the URL */
521	BIT(conn_to_port); /* if set, this connection has a "connect to port"
522	that overrides the port in the URL (remote port) */
523	BIT(ipv6_ip); /* we communicate with a remote site specified with pure IPv6
524	IP address */
525	BIT(ipv6); /* we communicate with a site using an IPv6 address */
526	BIT(do_more); /* this is set TRUE if the ->curl_do_more() function is
527	supposed to be called, after ->curl_do() */
528	BIT(protoconnstart);/* the protocol layer has STARTED its operation after
529	the TCP layer connect */
530	BIT(retry); /* this connection is about to get closed and then
531	re-attempted at another connection. */
532	#ifndef CURL_DISABLE_FTP
533	BIT(ftp_use_epsv); /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
534	EPSV does not work we disable it for the forthcoming
535	requests */
536	BIT(ftp_use_eprt); /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
537	EPRT does not work we disable it for the forthcoming
538	requests */
539	BIT(ftp_use_data_ssl); /* Enabled SSL for the data connection */
540	BIT(ftp_use_control_ssl); /* Enabled SSL for the control connection */
541	#endif
542	#ifndef CURL_DISABLE_NETRC
543	BIT(netrc); /* name+password provided by netrc */
544	#endif
545	BIT(bound); /* set true if bind() has already been done on this socket/
546	connection */
547	BIT(asks_multiplex); /* connection asks for multiplexing, but is not yet */
548	BIT(multiplex); /* connection is multiplexed */
549	BIT(tcp_fastopen); /* use TCP Fast Open */
550	BIT(tls_enable_alpn); /* TLS ALPN extension? */
551	#ifndef CURL_DISABLE_DOH
552	BIT(doh);
553	#endif
554	#ifdef USE_UNIX_SOCKETS
555	BIT(abstract_unix_socket);
556	#endif
557	BIT(tls_upgraded);
558	BIT(sock_accepted); /* TRUE if the SECONDARYSOCKET was created with
559	accept() */
560	BIT(parallel_connect); /* set TRUE when a parallel connect attempt has
561	started (happy eyeballs) */
562	BIT(aborted); /* connection was aborted, e.g. in unclean state */
563	BIT(shutdown_handler); /* connection shutdown: handler shut down */
564	BIT(shutdown_filters); /* connection shutdown: filters shut down */
565	BIT(in_cpool); /* connection is kept in a connection pool */
566	};
567
568	struct hostname {
569	char rawalloc; / allocated "raw" version of the name */
570	char encalloc; / allocated IDN-encoded version of the name */
571	char name; / name to use internally, might be encoded, might be raw */
572	const char dispname; / name to display, as 'name' might be encoded */
573	};
574
575	/*
576	* Flags on the keepon member of the Curl_transfer_keeper
577	*/
578
579	#define KEEP_NONE 0
580	#define KEEP_RECV (1<<0) /* there is or may be data to read */
581	#define KEEP_SEND (1<<1) /* there is or may be data to write */
582	#define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
583	might still be data to read */
584	#define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
585	might still be data to write */
586	#define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
587	#define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
588
589	/* KEEP_SEND_TIMED is set when the transfer should attempt sending
590	* at timer (or other) events. A transfer waiting on a timer will
591	* remove KEEP_SEND to suppress POLLOUTs of the connection.
592	* Adding KEEP_SEND_TIMED will then attempt to send whenever the transfer
593	* enters the "readwrite" loop, e.g. when a timer fires.
594	* This is used in HTTP for 'Expect: 100-continue' waiting. */
595	#define KEEP_SEND_TIMED (1<<6)
596
597	#define KEEP_RECVBITS (KEEP_RECV \| KEEP_RECV_HOLD \| KEEP_RECV_PAUSE)
598	#define KEEP_SENDBITS (KEEP_SEND \| KEEP_SEND_HOLD \| KEEP_SEND_PAUSE)
599
600	/* transfer wants to send is not PAUSE or HOLD */
601	#define CURL_WANT_SEND(data) \
602	(((data)->req.keepon & KEEP_SENDBITS) == KEEP_SEND)
603	/* transfer receive is not on PAUSE or HOLD */
604	#define CURL_WANT_RECV(data) \
605	(((data)->req.keepon & KEEP_RECVBITS) == KEEP_RECV)
606
607	#if defined(CURLRES_ASYNCH) \|\| !defined(CURL_DISABLE_DOH)
608	#define USE_CURL_ASYNC
609	struct Curl_async {
610	char *hostname;
611	struct Curl_dns_entry *dns;
612	struct thread_data *tdata;
613	void resolver; / resolver state, if it is used in the URL state -
614	ares_channel e.g. */
615	int port;
616	int status; /* if done is TRUE, this is the status from the callback */
617	BIT(done); /* set TRUE when the lookup is complete */
618	};
619
620	#endif
621
622	#define FIRSTSOCKET 0
623	#define SECONDARYSOCKET 1
624
625	/* Polling requested by an easy handle.
626	* `action` is CURL_POLL_IN, CURL_POLL_OUT or CURL_POLL_INOUT.
627	*/
628	struct easy_pollset {
629	curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE];
630	unsigned int num;
631	unsigned char actions[MAX_SOCKSPEREASYHANDLE];
632	};
633
634	/*
635	* Specific protocol handler.
636	*/
637
638	struct Curl_handler {
639	const char scheme; / URL scheme name in lowercase */
640
641	/* Complement to setup_connection_internals(). This is done before the
642	transfer "owns" the connection. */
643	CURLcode (setup_connection)(struct Curl_easy data,
644	struct connectdata *conn);
645
646	/* These two functions MUST be set to be protocol dependent */
647	CURLcode (do_it)(struct Curl_easy data, bool *done);
648	CURLcode (done)(struct Curl_easy , CURLcode, bool);
649
650	/* If the curl_do() function is better made in two halves, this
651	* curl_do_more() function will be called afterwards, if set. For example
652	* for doing the FTP stuff after the PASV/PORT command.
653	*/
654	CURLcode (do_more)(struct Curl_easy , int *);
655
656	/* This function MAY be set to a protocol-dependent function that is run
657	* after the connect() and everything is done, as a step in the connection.
658	* The 'done' pointer points to a bool that should be set to TRUE if the
659	* function completes before return. If it does not complete, the caller
660	* should call the ->connecting() function until it is.
661	*/
662	CURLcode (connect_it)(struct Curl_easy data, bool *done);
663
664	/* See above. */
665	CURLcode (connecting)(struct Curl_easy data, bool *done);
666	CURLcode (doing)(struct Curl_easy data, bool *done);
667
668	/* Called from the multi interface during the PROTOCONNECT phase, and it
669	should then return a proper fd set */
670	int (proto_getsock)(struct Curl_easy data,
671	struct connectdata conn, curl_socket_t socks);
672
673	/* Called from the multi interface during the DOING phase, and it should
674	then return a proper fd set */
675	int (doing_getsock)(struct Curl_easy data,
676	struct connectdata conn, curl_socket_t socks);
677
678	/* Called from the multi interface during the DO_MORE phase, and it should
679	then return a proper fd set */
680	int (domore_getsock)(struct Curl_easy data,
681	struct connectdata conn, curl_socket_t socks);
682
683	/* Called from the multi interface during the DO_DONE, PERFORM and
684	WAITPERFORM phases, and it should then return a proper fd set. Not setting
685	this will make libcurl use the generic default one. */
686	int (perform_getsock)(struct Curl_easy data,
687	struct connectdata conn, curl_socket_t socks);
688
689	/* This function MAY be set to a protocol-dependent function that is run
690	* by the curl_disconnect(), as a step in the disconnection. If the handler
691	* is called because the connection has been considered dead,
692	* dead_connection is set to TRUE. The connection is (again) associated with
693	* the transfer here.
694	*/
695	CURLcode (disconnect)(struct Curl_easy , struct connectdata *,
696	bool dead_connection);
697
698	/* If used, this function gets called from transfer.c to
699	allow the protocol to do extra handling in writing response to
700	the client. */
701	CURLcode (write_resp)(struct Curl_easy data, const char *buf, size_t blen,
702	bool is_eos);
703
704	/* If used, this function gets called from transfer.c to
705	allow the protocol to do extra handling in writing a single response
706	header line to the client. */
707	CURLcode (write_resp_hd)(struct Curl_easy data,
708	const char *hd, size_t hdlen, bool is_eos);
709
710	/* This function can perform various checks on the connection. See
711	CONNCHECK_* for more information about the checks that can be performed,
712	and CONNRESULT_* for the results that can be returned. */
713	unsigned int (connection_check)(struct Curl_easy data,
714	struct connectdata *conn,
715	unsigned int checks_to_perform);
716
717	/* attach() attaches this transfer to this connection */
718	void (attach)(struct Curl_easy data, struct connectdata *conn);
719
720	int defport; /* Default port. */
721	curl_prot_t protocol; /* See CURLPROTO_* - this needs to be the single
722	specific protocol bit */
723	curl_prot_t family; /* single bit for protocol family; basically the
724	non-TLS name of the protocol this is */
725	unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */
726
727	};
728
729	#define PROTOPT_NONE 0 /* nothing extra */
730	#define PROTOPT_SSL (1<<0) /* uses SSL */
731	#define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */
732	#define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */
733	/* some protocols will have to call the underlying functions without regard to
734	what exact state the socket signals. IE even if the socket says "readable",
735	the send function might need to be called while uploading, or vice versa.
736	*/
737	#define PROTOPT_DIRLOCK (1<<3)
738	#define PROTOPT_NONETWORK (1<<4) /* protocol does not use the network! */
739	#define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it
740	gets a default */
741	#define PROTOPT_NOURLQUERY (1<<6) /* protocol cannot handle
742	URL query strings (?foo=bar) ! */
743	#define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per
744	request instead of per connection */
745	#define PROTOPT_ALPN (1<<8) /* set ALPN for this */
746	/* (1<<9) was PROTOPT_STREAM, now free */
747	#define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field
748	of the URL */
749	#define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a
750	HTTP proxy as HTTP proxies may know
751	this protocol and act as a gateway */
752	#define PROTOPT_WILDCARD (1<<12) /* protocol supports wildcard matching */
753	#define PROTOPT_USERPWDCTRL (1<<13) /* Allow "control bytes" (< 32 ASCII) in
754	username and password */
755	#define PROTOPT_NOTCPPROXY (1<<14) /* this protocol cannot proxy over TCP */
756
757	#define CONNCHECK_NONE 0 /* No checks */
758	#define CONNCHECK_ISDEAD (1<<0) /* Check if the connection is dead. */
759	#define CONNCHECK_KEEPALIVE (1<<1) /* Perform any keepalive function. */
760
761	#define CONNRESULT_NONE 0 /* No extra information. */
762	#define CONNRESULT_DEAD (1<<0) /* The connection is dead. */
763
764	struct ip_quadruple {
765	char remote_ip[MAX_IPADR_LEN];
766	char local_ip[MAX_IPADR_LEN];
767	int remote_port;
768	int local_port;
769	};
770
771	struct proxy_info {
772	struct hostname host;
773	int port;
774	unsigned char proxytype; /* curl_proxytype: what kind of proxy that is in
775	use */
776	char user; / proxy username string, allocated */
777	char passwd; / proxy password string, allocated */
778	};
779
780	struct ldapconninfo;
781
782	#define TRNSPRT_TCP 3
783	#define TRNSPRT_UDP 4
784	#define TRNSPRT_QUIC 5
785	#define TRNSPRT_UNIX 6
786
787	/*
788	* The connectdata struct contains all fields and variables that should be
789	* unique for an entire connection.
790	*/
791	struct connectdata {
792	struct Curl_llist_node cpool_node; /* conncache lists */
793
794	curl_closesocket_callback fclosesocket; /* function closing the socket(s) */
795	void *closesocket_client;
796
797	/* This is used by the connection pool logic. If this returns TRUE, this
798	handle is still used by one or more easy handles and can only used by any
799	other easy handle without careful consideration (== only for
800	multiplexing) and it cannot be used by another multi handle! */
801	#define CONN_INUSE(c) Curl_llist_count(&(c)->easyq)
802
803	/**** Fields set when inited and not modified again */
804	curl_off_t connection_id; /* Contains a unique number to make it easier to
805	track the connections in the log output */
806	char destination; / string carrying normalized hostname+port+scope */
807	size_t destination_len; /* strlen(destination) + 1 */
808
809	/* 'dns_entry' is the particular host we use. This points to an entry in the
810	DNS cache and it will not get pruned while locked. It gets unlocked in
811	multi_done(). This entry will be NULL if the connection is reused as then
812	there is no name resolve done. */
813	struct Curl_dns_entry *dns_entry;
814
815	/* 'remote_addr' is the particular IP we connected to. it is owned, set
816	* and NULLed by the connected socket filter (if there is one). */
817	const struct Curl_sockaddr_ex *remote_addr;
818
819	struct hostname host;
820	char hostname_resolve; / hostname to resolve to address, allocated */
821	char secondaryhostname; / secondary socket hostname (ftp) */
822	struct hostname conn_to_host; /* the host to connect to. valid only if
823	bits.conn_to_host is set */
824	#ifndef CURL_DISABLE_PROXY
825	struct proxy_info socks_proxy;
826	struct proxy_info http_proxy;
827	#endif
828	/* 'primary' and 'secondary' get filled with IP quadruple
829	(local/remote numerical ip address and port) whenever a connect is
830	attempted.
831	When more 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. */
834	struct ip_quadruple primary;
835	struct ip_quadruple secondary;
836	char user; / username string, allocated */
837	char passwd; / password string, allocated */
838	char options; / options string, allocated */
839	char sasl_authzid; / authorization identity string, allocated */
840	char oauth_bearer; / OAUTH2 bearer, allocated */
841	struct curltime now; /* "current" time */
842	struct curltime created; /* creation time */
843	struct curltime lastused; /* when returned to the connection poolas idle */
844	curl_socket_t sock[2]; /* two sockets, the second is used for the data
845	transfer when doing FTP */
846	Curl_recv *recv[2];
847	Curl_send *send[2];
848	struct Curl_cfilter cfilter[2]; / connection filters */
849	struct {
850	struct curltime start[2]; /* when filter shutdown started */
851	unsigned int timeout_ms; /* 0 means no timeout */
852	} shutdown;
853	/* Last pollset used in connection shutdown. Used to detect changes
854	* for multi_socket API. */
855	struct easy_pollset shutdown_poll;
856
857	struct ssl_primary_config ssl_config;
858	#ifndef CURL_DISABLE_PROXY
859	struct ssl_primary_config proxy_ssl_config;
860	#endif
861	struct ConnectBits bits; /* various state-flags for this connection */
862
863	const struct Curl_handler handler; / Connection's protocol handler */
864	const struct Curl_handler given; / The protocol first given */
865
866	/* Protocols can use a custom keepalive mechanism to keep connections alive.
867	This allows those protocols to track the last time the keepalive mechanism
868	was used on this connection. */
869	struct curltime keepalive;
870
871	/**** curl_get() phase fields */
872
873	curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
874	curl_socket_t writesockfd; /* socket to write to, it may be the same we read
875	from. CURL_SOCKET_BAD disables */
876
877	#ifdef HAVE_GSSAPI
878	BIT(sec_complete); /* if Kerberos is enabled for this connection */
879	unsigned char command_prot; /* enum protection_level */
880	unsigned char data_prot; /* enum protection_level */
881	unsigned char request_data_prot; /* enum protection_level */
882	size_t buffer_size;
883	struct krb5buffer in_buffer;
884	void *app_data;
885	const struct Curl_sec_client_mech *mech;
886	struct sockaddr_in local_addr;
887	#endif
888
889	#if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */
890	struct kerberos5data krb5; /* variables into the structure definition, */
891	#endif /* however, some of them are ftp specific. */
892
893	struct Curl_llist easyq; /* List of easy handles using this connection */
894
895	/************* Request - specific items **********/
896	#if defined(USE_WINDOWS_SSPI) && defined(SECPKG_ATTR_ENDPOINT_BINDINGS)
897	CtxtHandle *sslContext;
898	#endif
899
900	#ifdef USE_GSASL
901	struct gsasldata gsasl;
902	#endif
903
904	#if defined(USE_NTLM)
905	curlntlm http_ntlm_state;
906	curlntlm proxy_ntlm_state;
907
908	struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
909	because it authenticates connections, not
910	single requests! */
911	struct ntlmdata proxyntlm; /* NTLM data for proxy */
912	#endif
913
914	#ifdef USE_SPNEGO
915	curlnegotiate http_negotiate_state;
916	curlnegotiate proxy_negotiate_state;
917
918	struct negotiatedata negotiate; /* state data for host Negotiate auth */
919	struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
920	#endif
921
922	union {
923	#ifndef CURL_DISABLE_FTP
924	struct ftp_conn ftpc;
925	#endif
926	#ifdef USE_SSH
927	struct ssh_conn sshc;
928	#endif
929	#ifndef CURL_DISABLE_TFTP
930	struct tftp_state_data *tftpc;
931	#endif
932	#ifndef CURL_DISABLE_IMAP
933	struct imap_conn imapc;
934	#endif
935	#ifndef CURL_DISABLE_POP3
936	struct pop3_conn pop3c;
937	#endif
938	#ifndef CURL_DISABLE_SMTP
939	struct smtp_conn smtpc;
940	#endif
941	#ifndef CURL_DISABLE_RTSP
942	struct rtsp_conn rtspc;
943	#endif
944	#ifndef CURL_DISABLE_SMB
945	struct smb_conn smbc;
946	#endif
947	#ifdef USE_LIBRTMP
948	void *rtmp;
949	#endif
950	#ifdef USE_OPENLDAP
951	struct ldapconninfo *ldapc;
952	#endif
953	#ifndef CURL_DISABLE_MQTT
954	struct mqtt_conn mqtt;
955	#endif
956	#ifndef CURL_DISABLE_WEBSOCKETS
957	struct websocket *ws;
958	#endif
959	unsigned int unused:1; /* avoids empty union */
960	} proto;
961
962	#ifdef USE_UNIX_SOCKETS
963	char *unix_domain_socket;
964	#endif
965	#ifdef USE_HYPER
966	/* if set, an alternative data transfer function */
967	Curl_datastream datastream;
968	#endif
969	/* When this connection is created, store the conditions for the local end
970	bind. This is stored before the actual bind and before any connection is
971	made and will serve the purpose of being used for comparison reasons so
972	that subsequent bound-requested connections are not accidentally reusing
973	wrong connections. */
974	char *localdev;
975	unsigned short localportrange;
976	int waitfor; /* current READ/WRITE bits to wait for */
977	#if defined(HAVE_GSSAPI) \|\| defined(USE_WINDOWS_SSPI)
978	int socks5_gssapi_enctype;
979	#endif
980	/* The field below gets set in connect.c:connecthost() */
981	int remote_port; /* the remote port, not the proxy port! */
982	int conn_to_port; /* the remote port to connect to. valid only if
983	bits.conn_to_port is set */
984	#ifdef USE_IPV6
985	unsigned int scope_id; /* Scope id for IPv6 */
986	#endif
987	unsigned short localport;
988	unsigned short secondary_port; /* secondary socket remote port to connect to
989	(ftp) */
990	unsigned char alpn; /* APLN TLS negotiated protocol, a CURL_HTTP_VERSION*
991	value */
992	#ifndef CURL_DISABLE_PROXY
993	unsigned char proxy_alpn; /* APLN of proxy tunnel, CURL_HTTP_VERSION* */
994	#endif
995	unsigned char transport; /* one of the TRNSPRT_* defines */
996	unsigned char ip_version; /* copied from the Curl_easy at creation time */
997	unsigned char httpversion; /* the HTTP version10 reported by the server /
998	unsigned char connect_only;
999	unsigned char gssapi_delegation; /* inherited from set.gssapi_delegation */
1000	};
1001
1002	#ifndef CURL_DISABLE_PROXY
1003	#define CURL_CONN_HOST_DISPNAME(c) \
1004	((c)->bits.socksproxy ? (c)->socks_proxy.host.dispname : \
1005	(c)->bits.httpproxy ? (c)->http_proxy.host.dispname : \
1006	(c)->bits.conn_to_host ? (c)->conn_to_host.dispname : \
1007	(c)->host.dispname)
1008	#else
1009	#define CURL_CONN_HOST_DISPNAME(c) \
1010	(c)->bits.conn_to_host ? (c)->conn_to_host.dispname : \
1011	(c)->host.dispname
1012	#endif
1013
1014	/* The end of connectdata. */
1015
1016	/*
1017	* Struct to keep statistical and informational data.
1018	* All variables in this struct must be initialized/reset in Curl_initinfo().
1019	*/
1020	struct PureInfo {
1021	int httpcode; /* Recent HTTP, FTP, RTSP or SMTP response code */
1022	int httpproxycode; /* response code from proxy when received separate */
1023	int httpversion; /* the http version number X.Y = X10+Y /
1024	time_t filetime; /* If requested, this is might get set. Set to -1 if the
1025	time was unretrievable. */
1026	curl_off_t request_size; /* the amount of bytes sent in the request(s) */
1027	unsigned long proxyauthavail; /* what proxy auth types were announced */
1028	unsigned long httpauthavail; /* what host auth types were announced */
1029	long numconnects; /* how many new connection did libcurl created */
1030	char contenttype; / the content type of the object */
1031	char wouldredirect; / URL this would have been redirected to if asked to */
1032	curl_off_t retry_after; /* info from Retry-After: header */
1033	unsigned int header_size; /* size of read header(s) in bytes */
1034
1035	/* PureInfo primary ip_quadruple is copied over from the connectdata
1036	struct in order to allow curl_easy_getinfo() to return this information
1037	even when the session handle is no longer associated with a connection,
1038	and also allow curl_easy_reset() to clear this information from the
1039	session handle without disturbing information which is still alive, and
1040	that might be reused, in the connection pool. */
1041	struct ip_quadruple primary;
1042	int conn_remote_port; /* this is the "remote port", which is the port
1043	number of the used URL, independent of proxy or
1044	not */
1045	const char *conn_scheme;
1046	unsigned int conn_protocol;
1047	struct curl_certinfo certs; /* info about the certs. Asked for with
1048	CURLOPT_CERTINFO / CURLINFO_CERTINFO */
1049	CURLproxycode pxcode;
1050	BIT(timecond); /* set to TRUE if the time condition did not match, which
1051	thus made the document NOT get fetched */
1052	BIT(used_proxy); /* the transfer used a proxy */
1053	};
1054
1055	struct pgrs_measure {
1056	struct curltime start; /* when measure started */
1057	curl_off_t start_size; /* the 'cur_size' the measure started at */
1058	};
1059
1060	struct pgrs_dir {
1061	curl_off_t total_size; /* total expected bytes */
1062	curl_off_t cur_size; /* transferred bytes so far */
1063	curl_off_t speed; /* bytes per second transferred */
1064	struct pgrs_measure limit;
1065	};
1066
1067	struct Progress {
1068	time_t lastshow; /* time() of the last displayed progress meter or NULL to
1069	force redraw at next call */
1070	struct pgrs_dir ul;
1071	struct pgrs_dir dl;
1072
1073	curl_off_t current_speed; /* uses the currently fastest transfer */
1074	curl_off_t earlydata_sent;
1075
1076	int width; /* screen width at download start */
1077	int flags; /* see progress.h */
1078
1079	timediff_t timespent;
1080
1081	timediff_t t_postqueue;
1082	timediff_t t_nslookup;
1083	timediff_t t_connect;
1084	timediff_t t_appconnect;
1085	timediff_t t_pretransfer;
1086	timediff_t t_posttransfer;
1087	timediff_t t_starttransfer;
1088	timediff_t t_redirect;
1089
1090	struct curltime start;
1091	struct curltime t_startsingle;
1092	struct curltime t_startop;
1093	struct curltime t_acceptdata;
1094
1095	#define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */
1096
1097	curl_off_t speeder[ CURR_TIME ];
1098	struct curltime speeder_time[ CURR_TIME ];
1099	int speeder_c;
1100	BIT(callback); /* set when progress callback is used */
1101	BIT(is_t_startransfer_set);
1102	};
1103
1104	typedef enum {
1105	RTSPREQ_NONE, /* first in list */
1106	RTSPREQ_OPTIONS,
1107	RTSPREQ_DESCRIBE,
1108	RTSPREQ_ANNOUNCE,
1109	RTSPREQ_SETUP,
1110	RTSPREQ_PLAY,
1111	RTSPREQ_PAUSE,
1112	RTSPREQ_TEARDOWN,
1113	RTSPREQ_GET_PARAMETER,
1114	RTSPREQ_SET_PARAMETER,
1115	RTSPREQ_RECORD,
1116	RTSPREQ_RECEIVE,
1117	RTSPREQ_LAST /* last in list */
1118	} Curl_RtspReq;
1119
1120	struct auth {
1121	unsigned long want; /* Bitmask set to the authentication methods wanted by
1122	app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1123	unsigned long picked;
1124	unsigned long avail; /* Bitmask for what the server reports to support for
1125	this resource */
1126	BIT(done); /* TRUE when the auth phase is done and ready to do the
1127	actual request */
1128	BIT(multipass); /* TRUE if this is not yet authenticated but within the
1129	auth multipass negotiation */
1130	BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it
1131	should be RFC compliant */
1132	};
1133
1134	#ifdef USE_NGHTTP2
1135	struct Curl_data_prio_node {
1136	struct Curl_data_prio_node *next;
1137	struct Curl_easy *data;
1138	};
1139	#endif
1140
1141	/**
1142	* Priority information for an easy handle in relation to others
1143	* on the same connection.
1144	* TODO: we need to adapt it to the new priority scheme as defined in RFC 9218
1145	*/
1146	struct Curl_data_priority {
1147	#ifdef USE_NGHTTP2
1148	/* tree like dependencies only implemented in nghttp2 */
1149	struct Curl_easy *parent;
1150	struct Curl_data_prio_node *children;
1151	#endif
1152	int weight;
1153	#ifdef USE_NGHTTP2
1154	BIT(exclusive);
1155	#endif
1156	};
1157
1158	/* Timers */
1159	typedef enum {
1160	EXPIRE_100_TIMEOUT,
1161	EXPIRE_ASYNC_NAME,
1162	EXPIRE_CONNECTTIMEOUT,
1163	EXPIRE_DNS_PER_NAME, /* family1 */
1164	EXPIRE_DNS_PER_NAME2, /* family2 */
1165	EXPIRE_HAPPY_EYEBALLS_DNS, /* See asyn-ares.c */
1166	EXPIRE_HAPPY_EYEBALLS,
1167	EXPIRE_MULTI_PENDING,
1168	EXPIRE_RUN_NOW,
1169	EXPIRE_SPEEDCHECK,
1170	EXPIRE_TIMEOUT,
1171	EXPIRE_TOOFAST,
1172	EXPIRE_QUIC,
1173	EXPIRE_FTP_ACCEPT,
1174	EXPIRE_ALPN_EYEBALLS,
1175	EXPIRE_LAST /* not an actual timer, used as a marker only */
1176	} expire_id;
1177
1178
1179	typedef enum {
1180	TRAILERS_NONE,
1181	TRAILERS_INITIALIZED,
1182	TRAILERS_SENDING,
1183	TRAILERS_DONE
1184	} trailers_state;
1185
1186
1187	/*
1188	* One instance for each timeout an easy handle can set.
1189	*/
1190	struct time_node {
1191	struct Curl_llist_node list;
1192	struct curltime time;
1193	expire_id eid;
1194	};
1195
1196	/* individual pieces of the URL */
1197	struct urlpieces {
1198	char *scheme;
1199	char *hostname;
1200	char *port;
1201	char *user;
1202	char *password;
1203	char *options;
1204	char *path;
1205	char *query;
1206	};
1207
1208	#define CREDS_NONE 0
1209	#define CREDS_URL 1 /* from URL */
1210	#define CREDS_OPTION 2 /* set with a CURLOPT_ */
1211	#define CREDS_NETRC 3 /* found in netrc */
1212
1213	struct UrlState {
1214	/* buffers to store authentication data in, as parsed from input options */
1215	struct curltime keeps_speed; /* for the progress meter really */
1216
1217	curl_off_t lastconnect_id; /* The last connection, -1 if undefined */
1218	curl_off_t recent_conn_id; /* The most recent connection used, might no
1219	* longer exist */
1220	struct dynbuf headerb; /* buffer to store headers in */
1221	struct curl_slist hstslist; / list of HSTS files set by
1222	curl_easy_setopt(HSTS) calls */
1223	curl_off_t current_speed; /* the ProgressShow() function sets this,
1224	bytes / second */
1225
1226	/* hostname, port number and protocol of the first (not followed) request.
1227	if set, this should be the hostname that we will sent authorization to,
1228	no else. Used to make Location: following not keep sending user+password.
1229	This is strdup()ed data. */
1230	char *first_host;
1231	int first_remote_port;
1232	curl_prot_t first_remote_protocol;
1233
1234	int retrycount; /* number of retries on a new connection */
1235	struct Curl_ssl_session session; / array of 'max_ssl_sessions' size */
1236	long sessionage; /* number of the most recent session */
1237	int os_errno; /* filled in with errno whenever an error occurs */
1238	long followlocation; /* redirect counter */
1239	int requests; /* request counter: redirects + authentication retakes */
1240	#ifdef HAVE_SIGNAL
1241	/* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1242	void (*prev_signal)(int sig);
1243	#endif
1244	#ifndef CURL_DISABLE_DIGEST_AUTH
1245	struct digestdata digest; /* state data for host Digest auth */
1246	struct digestdata proxydigest; /* state data for proxy Digest auth */
1247	#endif
1248	struct auth authhost; /* auth details for host */
1249	struct auth authproxy; /* auth details for proxy */
1250	#ifdef USE_CURL_ASYNC
1251	struct Curl_async async; /* asynchronous name resolver data */
1252	#endif
1253
1254	#if defined(USE_OPENSSL)
1255	/* void instead of ENGINE to avoid bleeding OpenSSL into this header */
1256	void *engine;
1257	#endif /* USE_OPENSSL */
1258	struct curltime expiretime; /* set this with Curl_expire() only */
1259	struct Curl_tree timenode; /* for the splay stuff */
1260	struct Curl_llist timeoutlist; /* list of pending timeouts */
1261	struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */
1262
1263	/* a place to store the most recently set (S)FTP entrypath */
1264	char *most_recent_ftp_entrypath;
1265	char range; / range, if used. See README for detailed specification on
1266	this syntax. */
1267	curl_off_t resume_from; /* continue [ftp] transfer from here */
1268
1269	#ifndef CURL_DISABLE_RTSP
1270	/* This RTSP state information survives requests and connections */
1271	long rtsp_next_client_CSeq; /* the session's next client CSeq */
1272	long rtsp_next_server_CSeq; /* the session's next server CSeq */
1273	long rtsp_CSeq_recv; /* most recent CSeq received */
1274
1275	unsigned char rtp_channel_mask[32]; /* for the correctness checking of the
1276	interleaved data */
1277	#endif
1278
1279	curl_off_t infilesize; /* size of file to upload, -1 means unknown.
1280	Copied from set.filesize at start of operation */
1281	#if defined(USE_HTTP2) \|\| defined(USE_HTTP3)
1282	struct Curl_data_priority priority; /* shallow copy of data->set */
1283	#endif
1284
1285	curl_read_callback fread_func; /* read callback/function */
1286	void in; / CURLOPT_READDATA */
1287	CURLU uh; / URL handle for the current parsed URL */
1288	struct urlpieces up;
1289	char url; / work URL, copied from UserDefined */
1290	char referer; / referer string */
1291	struct curl_slist resolve; / set to point to the set.resolve list when
1292	this should be dealt with in pretransfer */
1293	#ifndef CURL_DISABLE_HTTP
1294	curl_mimepart *mimepost;
1295	#ifndef CURL_DISABLE_FORM_API
1296	curl_mimepart formp; / storage for old API form-posting, allocated on
1297	demand */
1298	#endif
1299	size_t trailers_bytes_sent;
1300	struct dynbuf trailers_buf; /* a buffer containing the compiled trailing
1301	headers */
1302	struct Curl_llist httphdrs; /* received headers */
1303	struct curl_header headerout[2]; /* for external purposes */
1304	struct Curl_header_store prevhead; / the latest added header */
1305	trailers_state trailers_state; /* whether we are sending trailers
1306	and what stage are we at */
1307	#endif
1308	#ifndef CURL_DISABLE_COOKIES
1309	struct curl_slist cookielist; / list of cookie files set by
1310	curl_easy_setopt(COOKIEFILE) calls */
1311	#endif
1312	#ifdef USE_HYPER
1313	bool hconnect; /* set if a CONNECT request */
1314	CURLcode hresult; /* used to pass return codes back from hyper callbacks */
1315	#endif
1316
1317	#ifndef CURL_DISABLE_VERBOSE_STRINGS
1318	struct curl_trc_feat feat; / opt. trace feature transfer is part of */
1319	#endif
1320
1321	#ifndef CURL_DISABLE_NETRC
1322	struct store_netrc netrc;
1323	#endif
1324
1325	/* Dynamically allocated strings, MUST be freed before this struct is
1326	killed. */
1327	struct dynamically_allocated_data {
1328	char *uagent;
1329	char *accept_encoding;
1330	char *userpwd;
1331	char *rangeline;
1332	char *ref;
1333	char *host;
1334	#ifndef CURL_DISABLE_COOKIES
1335	char *cookiehost;
1336	#endif
1337	#ifndef CURL_DISABLE_RTSP
1338	char *rtsp_transport;
1339	#endif
1340	char te; / TE: request header */
1341
1342	/* transfer credentials */
1343	char *user;
1344	char *passwd;
1345	#ifndef CURL_DISABLE_PROXY
1346	char *proxyuserpwd;
1347	char *proxyuser;
1348	char *proxypasswd;
1349	#endif
1350	} aptr;
1351	unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1352	to be used in the library's request(s) */
1353	unsigned char httpversion; /* the lowest HTTP version*10 reported by any
1354	server involved in this request */
1355	unsigned char httpreq; /* Curl_HttpReq; what kind of HTTP request (if any)
1356	is this */
1357	unsigned char select_bits; /* != 0 -> bitmask of socket events for this
1358	transfer overriding anything the socket may
1359	report */
1360	unsigned int creds_from:2; /* where is the server credentials originating
1361	from, see the CREDS_* defines above */
1362
1363	/* when curl_easy_perform() is called, the multi handle is "owned" by
1364	the easy handle so curl_easy_cleanup() on such an easy handle will
1365	also close the multi handle! */
1366	BIT(multi_owned_by_easy);
1367
1368	BIT(this_is_a_follow); /* this is a followed Location: request */
1369	BIT(refused_stream); /* this was refused, try again */
1370	BIT(errorbuf); /* Set to TRUE if the error buffer is already filled in.
1371	This must be set to FALSE every time _easy_perform() is
1372	called. */
1373	BIT(allow_port); /* Is set.use_port allowed to take effect or not. This
1374	is always set TRUE when curl_easy_perform() is called. */
1375	BIT(authproblem); /* TRUE if there is some problem authenticating */
1376	/* set after initial USER failure, to prevent an authentication loop */
1377	BIT(wildcardmatch); /* enable wildcard matching */
1378	BIT(disableexpect); /* TRUE if Expect: is disabled due to a previous
1379	417 response */
1380	BIT(use_range);
1381	BIT(rangestringalloc); /* the range string is malloc()'ed */
1382	BIT(done); /* set to FALSE when Curl_init_do() is called and set to TRUE
1383	when multi_done() is called, to prevent multi_done() to get
1384	invoked twice when the multi interface is used. */
1385	#ifndef CURL_DISABLE_COOKIES
1386	BIT(cookie_engine);
1387	#endif
1388	BIT(prefer_ascii); /* ASCII rather than binary */
1389	#ifdef CURL_LIST_ONLY_PROTOCOL
1390	BIT(list_only); /* list directory contents */
1391	#endif
1392	BIT(url_alloc); /* URL string is malloc()'ed */
1393	BIT(referer_alloc); /* referer string is malloc()ed */
1394	BIT(wildcard_resolve); /* Set to true if any resolve change is a wildcard */
1395	BIT(upload); /* upload request */
1396	BIT(internal); /* internal: true if this easy handle was created for
1397	internal use and the user does not have ownership of the
1398	handle. */
1399	};
1400
1401	/*
1402	* This 'UserDefined' struct must only contain data that is set once to go
1403	* for many (perhaps) independent connections. Values that are generated or
1404	* calculated internally for the "session handle" MUST be defined within the
1405	* 'struct UrlState' instead. The only exceptions MUST note the changes in
1406	* the 'DynamicStatic' struct.
1407	* Character pointer fields point to dynamic storage, unless otherwise stated.
1408	*/
1409
1410	struct Curl_multi; /* declared in multihandle.c */
1411
1412	enum dupstring {
1413	STRING_CERT, /* client certificate filename */
1414	STRING_CERT_TYPE, /* format for certificate (default: PEM)*/
1415	STRING_KEY, /* private key filename */
1416	STRING_KEY_PASSWD, /* plain text private key password */
1417	STRING_KEY_TYPE, /* format for private key (default: PEM) */
1418	STRING_SSL_CAPATH, /* CA directory name (does not work on Windows) */
1419	STRING_SSL_CAFILE, /* certificate file to verify peer against */
1420	STRING_SSL_PINNEDPUBLICKEY, /* public key file to verify peer against */
1421	STRING_SSL_CIPHER_LIST, /* list of ciphers to use */
1422	STRING_SSL_CIPHER13_LIST, /* list of TLS 1.3 ciphers to use */
1423	STRING_SSL_CRLFILE, /* crl file to check certificate */
1424	STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */
1425	STRING_SERVICE_NAME, /* Service name */
1426	#ifndef CURL_DISABLE_PROXY
1427	STRING_CERT_PROXY, /* client certificate filename */
1428	STRING_CERT_TYPE_PROXY, /* format for certificate (default: PEM)*/
1429	STRING_KEY_PROXY, /* private key filename */
1430	STRING_KEY_PASSWD_PROXY, /* plain text private key password */
1431	STRING_KEY_TYPE_PROXY, /* format for private key (default: PEM) */
1432	STRING_SSL_CAPATH_PROXY, /* CA directory name (does not work on Windows) */
1433	STRING_SSL_CAFILE_PROXY, /* certificate file to verify peer against */
1434	STRING_SSL_PINNEDPUBLICKEY_PROXY, /* public key file to verify proxy */
1435	STRING_SSL_CIPHER_LIST_PROXY, /* list of ciphers to use */
1436	STRING_SSL_CIPHER13_LIST_PROXY, /* list of TLS 1.3 ciphers to use */
1437	STRING_SSL_CRLFILE_PROXY, /* crl file to check certificate */
1438	STRING_SSL_ISSUERCERT_PROXY, /* issuer cert file to check certificate */
1439	STRING_PROXY_SERVICE_NAME, /* Proxy service name */
1440	#endif
1441	#ifndef CURL_DISABLE_COOKIES
1442	STRING_COOKIE, /* HTTP cookie string to send */
1443	STRING_COOKIEJAR, /* dump all cookies to this file */
1444	#endif
1445	STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1446	STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL does not specify */
1447	STRING_DEVICE, /* local network interface/address to use */
1448	STRING_INTERFACE, /* local network interface to use */
1449	STRING_BINDHOST, /* local address to use */
1450	STRING_ENCODING, /* Accept-Encoding string */
1451	#ifndef CURL_DISABLE_FTP
1452	STRING_FTP_ACCOUNT, /* ftp account data */
1453	STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1454	STRING_FTPPORT, /* port to send with the FTP PORT command */
1455	#endif
1456	#if defined(HAVE_GSSAPI)
1457	STRING_KRB_LEVEL, /* krb security level */
1458	#endif
1459	#ifndef CURL_DISABLE_NETRC
1460	STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1461	$HOME/.netrc */
1462	#endif
1463	#ifndef CURL_DISABLE_PROXY
1464	STRING_PROXY, /* proxy to use */
1465	STRING_PRE_PROXY, /* pre socks proxy to use */
1466	#endif
1467	STRING_SET_RANGE, /* range, if used */
1468	STRING_SET_REFERER, /* custom string for the HTTP referer field */
1469	STRING_SET_URL, /* what original URL to work on */
1470	STRING_USERAGENT, /* User-Agent string */
1471	STRING_SSL_ENGINE, /* name of ssl engine */
1472	STRING_USERNAME, /* <username>, if used */
1473	STRING_PASSWORD, /* <password>, if used */
1474	STRING_OPTIONS, /* <options>, if used */
1475	#ifndef CURL_DISABLE_PROXY
1476	STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1477	STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1478	STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1479	used */
1480	#endif
1481	#ifndef CURL_DISABLE_RTSP
1482	STRING_RTSP_SESSION_ID, /* Session ID to use */
1483	STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1484	STRING_RTSP_TRANSPORT, /* Transport for this session */
1485	#endif
1486	#ifdef USE_SSH
1487	STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1488	STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1489	STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ASCII hex */
1490	STRING_SSH_HOST_PUBLIC_KEY_SHA256, /* sha256 of host public key in base64 */
1491	STRING_SSH_KNOWNHOSTS, /* filename of knownhosts file */
1492	#endif
1493	#ifndef CURL_DISABLE_SMTP
1494	STRING_MAIL_FROM,
1495	STRING_MAIL_AUTH,
1496	#endif
1497	#ifdef USE_TLS_SRP
1498	STRING_TLSAUTH_USERNAME, /* TLS auth <username> */
1499	STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */
1500	#ifndef CURL_DISABLE_PROXY
1501	STRING_TLSAUTH_USERNAME_PROXY, /* TLS auth <username> */
1502	STRING_TLSAUTH_PASSWORD_PROXY, /* TLS auth <password> */
1503	#endif
1504	#endif
1505	STRING_BEARER, /* <bearer>, if used */
1506	#ifdef USE_UNIX_SOCKETS
1507	STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */
1508	#endif
1509	STRING_TARGET, /* CURLOPT_REQUEST_TARGET */
1510	#ifndef CURL_DISABLE_DOH
1511	STRING_DOH, /* CURLOPT_DOH_URL */
1512	#endif
1513	#ifndef CURL_DISABLE_ALTSVC
1514	STRING_ALTSVC, /* CURLOPT_ALTSVC */
1515	#endif
1516	#ifndef CURL_DISABLE_HSTS
1517	STRING_HSTS, /* CURLOPT_HSTS */
1518	#endif
1519	STRING_SASL_AUTHZID, /* CURLOPT_SASL_AUTHZID */
1520	#ifdef USE_ARES
1521	STRING_DNS_SERVERS,
1522	STRING_DNS_INTERFACE,
1523	STRING_DNS_LOCAL_IP4,
1524	STRING_DNS_LOCAL_IP6,
1525	#endif
1526	STRING_SSL_EC_CURVES,
1527	#ifndef CURL_DISABLE_AWS
1528	STRING_AWS_SIGV4, /* Parameters for V4 signature */
1529	#endif
1530	#ifndef CURL_DISABLE_PROXY
1531	STRING_HAPROXY_CLIENT_IP, /* CURLOPT_HAPROXY_CLIENT_IP */
1532	#endif
1533	STRING_ECH_CONFIG, /* CURLOPT_ECH_CONFIG */
1534	STRING_ECH_PUBLIC, /* CURLOPT_ECH_PUBLIC */
1535
1536	/* -- end of null-terminated strings -- */
1537
1538	STRING_LASTZEROTERMINATED,
1539
1540	/* -- below this are pointers to binary data that cannot be strdup'ed. --- */
1541
1542	STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1543
1544	STRING_LAST /* not used, just an end-of-list marker */
1545	};
1546
1547	enum dupblob {
1548	BLOB_CERT,
1549	BLOB_KEY,
1550	BLOB_SSL_ISSUERCERT,
1551	BLOB_CAINFO,
1552	#ifndef CURL_DISABLE_PROXY
1553	BLOB_CERT_PROXY,
1554	BLOB_KEY_PROXY,
1555	BLOB_SSL_ISSUERCERT_PROXY,
1556	BLOB_CAINFO_PROXY,
1557	#endif
1558	BLOB_LAST
1559	};
1560
1561	/* callback that gets called when this easy handle is completed within a multi
1562	handle. Only used for internally created transfers, like for example
1563	DoH. */
1564	typedef int (multidone_func)(struct Curl_easy easy, CURLcode result);
1565
1566	struct UserDefined {
1567	FILE err; / the stderr user data goes here */
1568	void debugdata; / the data that will be passed to fdebug */
1569	char errorbuffer; / (Static) store failure messages in here */
1570	void out; / CURLOPT_WRITEDATA */
1571	void in_set; / CURLOPT_READDATA */
1572	void writeheader; / write the header to this if non-NULL */
1573	unsigned short use_port; /* which port to use (when not using default) */
1574	unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
1575	unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
1576	long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1577	for infinity */
1578
1579	void postfields; / if POST, set the fields' values here */
1580	curl_seek_callback seek_func; /* function that seeks the input */
1581	curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1582	of strlen(), and then the data may be binary
1583	(contain zero bytes) */
1584	#ifndef CURL_DISABLE_BINDLOCAL
1585	unsigned short localport; /* local port number to bind to */
1586	unsigned short localportrange; /* number of additional port numbers to test
1587	in case the 'localport' one cannot be
1588	bind()ed */
1589	#endif
1590	curl_write_callback fwrite_func; /* function that stores the output */
1591	curl_write_callback fwrite_header; /* function that stores headers */
1592	curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1593	curl_read_callback fread_func_set; /* function that reads the input */
1594	curl_progress_callback fprogress; /* OLD and deprecated progress callback */
1595	curl_xferinfo_callback fxferinfo; /* progress callback */
1596	curl_debug_callback fdebug; /* function that write informational data */
1597	curl_ioctl_callback ioctl_func; /* function for I/O control */
1598	curl_sockopt_callback fsockopt; /* function for setting socket options */
1599	void sockopt_client; / pointer to pass to the socket options callback */
1600	curl_opensocket_callback fopensocket; /* function for checking/translating
1601	the address and opening the
1602	socket */
1603	void *opensocket_client;
1604	curl_closesocket_callback fclosesocket; /* function for closing the
1605	socket */
1606	void *closesocket_client;
1607	curl_prereq_callback fprereq; /* pre-initial request callback */
1608	void prereq_userp; / pre-initial request user data */
1609
1610	void seek_client; / pointer to pass to the seek callback */
1611	#ifndef CURL_DISABLE_HSTS
1612	curl_hstsread_callback hsts_read;
1613	void *hsts_read_userp;
1614	curl_hstswrite_callback hsts_write;
1615	void *hsts_write_userp;
1616	#endif
1617	void progress_client; / pointer to pass to the progress callback */
1618	void ioctl_client; / pointer to pass to the ioctl callback */
1619	unsigned int timeout; /* ms, 0 means no timeout */
1620	unsigned int connecttimeout; /* ms, 0 means default timeout */
1621	unsigned int happy_eyeballs_timeout; /* ms, 0 is a valid value */
1622	unsigned int server_response_timeout; /* ms, 0 means no timeout */
1623	unsigned int shutdowntimeout; /* ms, 0 means default timeout */
1624	long maxage_conn; /* in seconds, max idle time to allow a connection that
1625	is to be reused */
1626	long maxlifetime_conn; /* in seconds, max time since creation to allow a
1627	connection that is to be reused */
1628	#ifndef CURL_DISABLE_TFTP
1629	long tftp_blksize; /* in bytes, 0 means use default */
1630	#endif
1631	curl_off_t filesize; /* size of file to upload, -1 means unknown */
1632	long low_speed_limit; /* bytes/second */
1633	long low_speed_time; /* number of seconds */
1634	curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1635	curl_off_t max_recv_speed; /* high speed limit in bytes/second for
1636	download */
1637	curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1638	struct curl_slist headers; / linked list of extra headers */
1639	struct curl_httppost httppost; / linked list of old POST data */
1640	#if !defined(CURL_DISABLE_MIME) \|\| !defined(CURL_DISABLE_FORM_API)
1641	curl_mimepart mimepost; /* MIME/POST data. */
1642	#endif
1643	#ifndef CURL_DISABLE_TELNET
1644	struct curl_slist telnet_options; / linked list of telnet options */
1645	#endif
1646	struct curl_slist resolve; / list of names to add/remove from
1647	DNS cache */
1648	struct curl_slist connect_to; / list of host:port mappings to override
1649	the hostname and port to connect to */
1650	time_t timevalue; /* what time to compare with */
1651	unsigned char timecondition; /* kind of time comparison: curl_TimeCond */
1652	unsigned char method; /* what kind of HTTP request: Curl_HttpReq */
1653	unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1654	to be used in the library's request(s) */
1655	struct ssl_config_data ssl; /* user defined SSL stuff */
1656	#ifndef CURL_DISABLE_PROXY
1657	struct ssl_config_data proxy_ssl; /* user defined SSL stuff for proxy */
1658	struct curl_slist proxyheaders; / linked list of extra CONNECT headers */
1659	unsigned short proxyport; /* If non-zero, use this port number by
1660	default. If the proxy string features a
1661	":[port]" that one will override this. */
1662	unsigned char proxytype; /* what kind of proxy: curl_proxytype */
1663	unsigned char socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
1664	#endif
1665	struct ssl_general_config general_ssl; /* general user defined SSL stuff */
1666	int dns_cache_timeout; /* DNS cache timeout (seconds) */
1667	unsigned int buffer_size; /* size of receive buffer to use */
1668	unsigned int upload_buffer_size; /* size of upload buffer to use,
1669	keep it >= CURL_MAX_WRITE_SIZE */
1670	void private_data; / application-private data */
1671	#ifndef CURL_DISABLE_HTTP
1672	struct curl_slist http200aliases; / linked list of aliases for http200 */
1673	#endif
1674	unsigned char ipver; /* the CURL_IPRESOLVE_* defines in the public header
1675	file 0 - whatever, 1 - v2, 2 - v6 */
1676	curl_off_t max_filesize; /* Maximum file size to download */
1677	#ifndef CURL_DISABLE_FTP
1678	unsigned char ftp_filemethod; /* how to get to a file: curl_ftpfile */
1679	unsigned char ftpsslauth; /* what AUTH XXX to try: curl_ftpauth */
1680	unsigned char ftp_ccc; /* FTP CCC options: curl_ftpccc */
1681	unsigned int accepttimeout; /* in milliseconds, 0 means no timeout */
1682	#endif
1683	#if !defined(CURL_DISABLE_FTP) \|\| defined(USE_SSH)
1684	struct curl_slist quote; / after connection is established */
1685	struct curl_slist postquote; / after the transfer */
1686	struct curl_slist prequote; / before the transfer, after type */
1687	/* Despite the name, ftp_create_missing_dirs is for FTP(S) and SFTP
1688	1 - create directories that do not exist
1689	2 - the same but also allow MKD to fail once
1690	*/
1691	unsigned char ftp_create_missing_dirs;
1692	#endif
1693	#ifdef USE_LIBSSH2
1694	curl_sshhostkeycallback ssh_hostkeyfunc; /* hostkey check callback */
1695	void ssh_hostkeyfunc_userp; / custom pointer to callback */
1696	#endif
1697	#ifdef USE_SSH
1698	curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1699	void ssh_keyfunc_userp; / custom pointer to callback */
1700	int ssh_auth_types; /* allowed SSH auth types */
1701	unsigned int new_directory_perms; /* when creating remote dirs */
1702	#endif
1703	#ifndef CURL_DISABLE_NETRC
1704	unsigned char use_netrc; /* enum CURL_NETRC_OPTION values */
1705	#endif
1706	unsigned int new_file_perms; /* when creating remote files */
1707	char str[STRING_LAST]; / array of strings, pointing to allocated memory */
1708	struct curl_blob *blobs[BLOB_LAST];
1709	#ifdef USE_IPV6
1710	unsigned int scope_id; /* Scope id for IPv6 */
1711	#endif
1712	curl_prot_t allowed_protocols;
1713	curl_prot_t redir_protocols;
1714	#ifndef CURL_DISABLE_RTSP
1715	void rtp_out; / write RTP to this if non-NULL */
1716	/* Common RTSP header options */
1717	Curl_RtspReq rtspreq; /* RTSP request type */
1718	#endif
1719	#ifndef CURL_DISABLE_FTP
1720	curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer
1721	starts */
1722	curl_chunk_end_callback chunk_end; /* called after part transferring
1723	stopped */
1724	curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1725	to pattern (e.g. if WILDCARDMATCH is on) */
1726	void *fnmatch_data;
1727	void *wildcardptr;
1728	#endif
1729	/* GSS-API credential delegation, see the documentation of
1730	CURLOPT_GSSAPI_DELEGATION */
1731	unsigned char gssapi_delegation;
1732
1733	int tcp_keepidle; /* seconds in idle before sending keepalive probe */
1734	int tcp_keepintvl; /* seconds between TCP keepalive probes */
1735	int tcp_keepcnt; /* maximum number of keepalive probes */
1736
1737	long expect_100_timeout; /* in milliseconds */
1738	#if defined(USE_HTTP2) \|\| defined(USE_HTTP3)
1739	struct Curl_data_priority priority;
1740	#endif
1741	curl_resolver_start_callback resolver_start; /* optional callback called
1742	before resolver start */
1743	void resolver_start_client; / pointer to pass to resolver start callback */
1744	long upkeep_interval_ms; /* Time between calls for connection upkeep. */
1745	multidone_func fmultidone;
1746	#ifndef CURL_DISABLE_DOH
1747	curl_off_t dohfor_mid; /* this is a DoH request for that transfer */
1748	#endif
1749	CURLU uh; / URL handle for the current parsed URL */
1750	#ifndef CURL_DISABLE_HTTP
1751	void trailer_data; / pointer to pass to trailer data callback */
1752	curl_trailer_callback trailer_callback; /* trailing data callback */
1753	#endif
1754	char keep_post; /* keep POSTs as POSTs after a 30x request; each
1755	bit represents a request, from 301 to 303 */
1756	#ifndef CURL_DISABLE_SMTP
1757	struct curl_slist mail_rcpt; / linked list of mail recipients */
1758	BIT(mail_rcpt_allowfails); /* allow RCPT TO command to fail for some
1759	recipients */
1760	#endif
1761	unsigned int maxconnects; /* Max idle connections in the connection cache */
1762	unsigned char use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1763	IMAP or POP3 or others! (type: curl_usessl)*/
1764	unsigned char connect_only; /* make connection/request, then let
1765	application use the socket */
1766	#ifndef CURL_DISABLE_MIME
1767	BIT(mime_formescape);
1768	#endif
1769	BIT(is_fread_set); /* has read callback been set to non-NULL? */
1770	#ifndef CURL_DISABLE_TFTP
1771	BIT(tftp_no_options); /* do not send TFTP options requests */
1772	#endif
1773	BIT(sep_headers); /* handle host and proxy headers separately */
1774	#ifndef CURL_DISABLE_COOKIES
1775	BIT(cookiesession); /* new cookie session? */
1776	#endif
1777	BIT(crlf); /* convert crlf on ftp upload(?) */
1778	#ifdef USE_SSH
1779	BIT(ssh_compression); /* enable SSH compression */
1780	#endif
1781
1782	/* Here follows boolean settings that define how to behave during
1783	this session. They are STATIC, set by libcurl users or at least initially
1784	and they do not change during operations. */
1785	BIT(quick_exit); /* set 1L when it is okay to leak things (like
1786	threads), as we are about to exit() anyway and
1787	do not want lengthy cleanups to delay termination,
1788	e.g. after a DNS timeout */
1789	BIT(get_filetime); /* get the time and get of the remote file */
1790	#ifndef CURL_DISABLE_PROXY
1791	BIT(tunnel_thru_httpproxy); /* use CONNECT through an HTTP proxy */
1792	#endif
1793	BIT(prefer_ascii); /* ASCII rather than binary */
1794	BIT(remote_append); /* append, not overwrite, on upload */
1795	#ifdef CURL_LIST_ONLY_PROTOCOL
1796	BIT(list_only); /* list directory */
1797	#endif
1798	#ifndef CURL_DISABLE_FTP
1799	BIT(ftp_use_port); /* use the FTP PORT command */
1800	BIT(ftp_use_epsv); /* if EPSV is to be attempted or not */
1801	BIT(ftp_use_eprt); /* if EPRT is to be attempted or not */
1802	BIT(ftp_use_pret); /* if PRET is to be used before PASV or not */
1803	BIT(ftp_skip_ip); /* skip the IP address the FTP server passes on to
1804	us */
1805	BIT(wildcard_enabled); /* enable wildcard matching */
1806	#endif
1807	BIT(hide_progress); /* do not use the progress meter */
1808	BIT(http_fail_on_error); /* fail on HTTP error codes >= 400 */
1809	BIT(http_keep_sending_on_error); /* for HTTP status codes >= 300 */
1810	BIT(http_follow_location); /* follow HTTP redirects */
1811	BIT(http_transfer_encoding); /* request compressed HTTP transfer-encoding */
1812	BIT(allow_auth_to_other_hosts);
1813	BIT(include_header); /* include received protocol headers in data output */
1814	BIT(http_set_referer); /* is a custom referer used */
1815	BIT(http_auto_referer); /* set "correct" referer when following
1816	location: */
1817	BIT(opt_no_body); /* as set with CURLOPT_NOBODY */
1818	BIT(verbose); /* output verbosity */
1819	#if defined(HAVE_GSSAPI)
1820	BIT(krb); /* Kerberos connection requested */
1821	#endif
1822	BIT(reuse_forbid); /* forbidden to be reused, close after use */
1823	BIT(reuse_fresh); /* do not reuse an existing connection */
1824	BIT(no_signal); /* do not use any signal/alarm handler */
1825	BIT(tcp_nodelay); /* whether to enable TCP_NODELAY or not */
1826	BIT(ignorecl); /* ignore content length */
1827	BIT(http_te_skip); /* pass the raw body data to the user, even when
1828	transfer-encoded (chunked, compressed) */
1829	BIT(http_ce_skip); /* pass the raw body data to the user, even when
1830	content-encoded (chunked, compressed) */
1831	BIT(proxy_transfer_mode); /* set transfer mode (;type=<a\|i>) when doing
1832	FTP via an HTTP proxy */
1833	#if defined(HAVE_GSSAPI) \|\| defined(USE_WINDOWS_SSPI)
1834	BIT(socks5_gssapi_nec); /* Flag to support NEC SOCKS5 server */
1835	#endif
1836	BIT(sasl_ir); /* Enable/disable SASL initial response */
1837	BIT(tcp_keepalive); /* use TCP keepalives */
1838	BIT(tcp_fastopen); /* use TCP Fast Open */
1839	BIT(ssl_enable_alpn);/* TLS ALPN extension? */
1840	BIT(path_as_is); /* allow dotdots? */
1841	BIT(pipewait); /* wait for multiplex status before starting a new
1842	connection */
1843	BIT(suppress_connect_headers); /* suppress proxy CONNECT response headers
1844	from user callbacks */
1845	BIT(dns_shuffle_addresses); /* whether to shuffle addresses before use */
1846	#ifndef CURL_DISABLE_PROXY
1847	BIT(haproxyprotocol); /* whether to send HAProxy PROXY protocol v1
1848	header */
1849	#endif
1850	#ifdef USE_UNIX_SOCKETS
1851	BIT(abstract_unix_socket);
1852	#endif
1853	BIT(disallow_username_in_url); /* disallow username in URL */
1854	#ifndef CURL_DISABLE_DOH
1855	BIT(doh); /* DNS-over-HTTPS enabled */
1856	BIT(doh_verifypeer); /* DoH certificate peer verification */
1857	BIT(doh_verifyhost); /* DoH certificate hostname verification */
1858	BIT(doh_verifystatus); /* DoH certificate status verification */
1859	#endif
1860	BIT(http09_allowed); /* allow HTTP/0.9 responses */
1861	#ifndef CURL_DISABLE_WEBSOCKETS
1862	BIT(ws_raw_mode);
1863	#endif
1864	#ifdef USE_ECH
1865	int tls_ech; /* TLS ECH configuration */
1866	#endif
1867	};
1868
1869	#ifndef CURL_DISABLE_MIME
1870	#define IS_MIME_POST(a) ((a)->set.mimepost.kind != MIMEKIND_NONE)
1871	#else
1872	#define IS_MIME_POST(a) FALSE
1873	#endif
1874
1875	struct Names {
1876	struct Curl_hash *hostcache;
1877	enum {
1878	HCACHE_NONE, /* not pointing to anything */
1879	HCACHE_MULTI, /* points to a shared one in the multi handle */
1880	HCACHE_SHARED /* points to a shared one in a shared object */
1881	} hostcachetype;
1882	};
1883
1884	/*
1885	* The 'connectdata' struct MUST have all the connection oriented stuff as we
1886	* may have several simultaneous connections and connection structs in memory.
1887	*
1888	* The 'struct UserDefined' must only contain data that is set once to go for
1889	* many (perhaps) independent connections. Values that are generated or
1890	* calculated internally for the "session handle" must be defined within the
1891	* 'struct UrlState' instead.
1892	*/
1893
1894	struct Curl_easy {
1895	/* First a simple identifier to easier detect if a user mix up this easy
1896	handle with a multi handle. Set this to CURLEASY_MAGIC_NUMBER */
1897	unsigned int magic;
1898	/* once an easy handle is tied to a connection pool a non-negative number to
1899	distinguish this transfer from other using the same pool. For easier
1900	tracking in log output. This may wrap around after LONG_MAX to 0 again,
1901	so it has no uniqueness guarantee for large processings. Note: it has no
1902	uniqueness either IFF more than one connection pool is used by the
1903	libcurl application. */
1904	curl_off_t id;
1905	/* once an easy handle is added to a multi, either explicitly by the
1906	* libcurl application or implicitly during `curl_easy_perform()`,
1907	* a unique identifier inside this one multi instance. */
1908	curl_off_t mid;
1909
1910	struct connectdata *conn;
1911	struct Curl_llist_node multi_queue; /* for multihandle list management */
1912	struct Curl_llist_node conn_queue; /* list per connectdata */
1913
1914	CURLMstate mstate; /* the handle's state */
1915	CURLcode result; /* previous result */
1916
1917	struct Curl_message msg; /* A single posted message. */
1918
1919	/* Array with the plain socket numbers this handle takes care of, in no
1920	particular order. Note that all sockets are added to the sockhash, where
1921	the state etc are also kept. This array is mostly used to detect when a
1922	socket is to be removed from the hash. See singlesocket(). */
1923	struct easy_pollset last_poll;
1924
1925	struct Names dns;
1926	struct Curl_multi multi; / if non-NULL, points to the multi handle
1927	struct to which this "belongs" when used by
1928	the multi interface */
1929	struct Curl_multi multi_easy; / if non-NULL, points to the multi handle
1930	struct to which this "belongs" when used
1931	by the easy interface */
1932	struct Curl_share share; / Share, handles global variable mutexing */
1933	#ifdef USE_LIBPSL
1934	struct PslCache psl; / The associated PSL cache. */
1935	#endif
1936	struct SingleRequest req; /* Request-specific data */
1937	struct UserDefined set; /* values set by the libcurl user */
1938	#ifndef CURL_DISABLE_COOKIES
1939	struct CookieInfo cookies; / the cookies, read from files and servers.
1940	NOTE that the 'cookie' field in the
1941	UserDefined struct defines if the "engine"
1942	is to be used or not. */
1943	#endif
1944	#ifndef CURL_DISABLE_HSTS
1945	struct hsts *hsts;
1946	#endif
1947	#ifndef CURL_DISABLE_ALTSVC
1948	struct altsvcinfo asi; / the alt-svc cache */
1949	#endif
1950	struct Progress progress; /* for all the progress meter data */
1951	struct UrlState state; /* struct for fields used for state info and
1952	other dynamic purposes */
1953	#ifndef CURL_DISABLE_FTP
1954	struct WildcardData wildcard; / wildcard download state info */
1955	#endif
1956	struct PureInfo info; /* stats, reports and info data */
1957	struct curl_tlssessioninfo tsi; /* Information about the TLS session, only
1958	valid after a client has asked for it */
1959	#ifdef USE_HYPER
1960	struct hyptransfer hyp;
1961	#endif
1962	};
1963
1964	#define LIBCURL_NAME "libcurl"
1965
1966	#endif /* HEADER_CURL_URLDATA_H */

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source: vbox/trunk/src/libs/curl-8.11.1/lib/urldata.h@ 108048

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