urldata.h@ 98339

最後變更在這個檔案從98339是 98326,由 vboxsync 提交於 2 年前
curl-7.87.0: Applied and adjusted our curl changes to 7.83.1. bugref:10356
屬性 svn:eol-style 設為 `native`
檔案大小: 79.3 KB

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1	#ifndef HEADER_CURL_URLDATA_H
2	#define HEADER_CURL_URLDATA_H
3	/***************************************************************************
4	* _ _ ____ _
5	* Project ___\| \| \| \| _ \\| \|
6	* / __\| \| \| \| \|_) \| \|
7	* \| (__\| \|_\| \| _ <\| \|___
8	* \___\|\___/\|_\| \_\_____\|
9	*
10	* Copyright (C) 1998 - 2022, 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	#ifdef USE_WEBSOCKETS
57	/* CURLPROTO_GOPHERS (29) is the highest publicly used protocol bit number,
58	* the rest are internal information. If we use higher bits we only do this on
59	* platforms that have a >= 64 bit type and then we use such a type for the
60	* protocol fields in the protocol handler.
61	*/
62	#define CURLPROTO_WS (1<<30)
63	#define CURLPROTO_WSS ((curl_prot_t)1<<31)
64	#else
65	#define CURLPROTO_WS 0
66	#define CURLPROTO_WSS 0
67	#endif
68
69	/* This should be undefined once we need bit 32 or higher */
70	#define PROTO_TYPE_SMALL
71
72	#ifndef PROTO_TYPE_SMALL
73	typedef curl_off_t curl_prot_t;
74	#else
75	typedef unsigned int curl_prot_t;
76	#endif
77
78	/* This mask is for all the old protocols that are provided and defined in the
79	public header and shall exclude protocols added since which are not exposed
80	in the API */
81	#define CURLPROTO_MASK (0x3ffffff)
82
83	#define DICT_MATCH "/MATCH:"
84	#define DICT_MATCH2 "/M:"
85	#define DICT_MATCH3 "/FIND:"
86	#define DICT_DEFINE "/DEFINE:"
87	#define DICT_DEFINE2 "/D:"
88	#define DICT_DEFINE3 "/LOOKUP:"
89
90	#define CURL_DEFAULT_USER "anonymous"
91	#define CURL_DEFAULT_PASSWORD "[email protected]"
92
93	/* Convenience defines for checking protocols or their SSL based version. Each
94	protocol handler should only ever have a single CURLPROTO_ in its protocol
95	field. */
96	#define PROTO_FAMILY_HTTP (CURLPROTO_HTTP\|CURLPROTO_HTTPS\|CURLPROTO_WS\| \
97	CURLPROTO_WSS)
98	#define PROTO_FAMILY_FTP (CURLPROTO_FTP\|CURLPROTO_FTPS)
99	#define PROTO_FAMILY_POP3 (CURLPROTO_POP3\|CURLPROTO_POP3S)
100	#define PROTO_FAMILY_SMB (CURLPROTO_SMB\|CURLPROTO_SMBS)
101	#define PROTO_FAMILY_SMTP (CURLPROTO_SMTP\|CURLPROTO_SMTPS)
102	#define PROTO_FAMILY_SSH (CURLPROTO_SCP\|CURLPROTO_SFTP)
103
104	#define DEFAULT_CONNCACHE_SIZE 5
105
106	/* length of longest IPv6 address string including the trailing null */
107	#define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
108
109	/* Default FTP/IMAP etc response timeout in milliseconds */
110	#define RESP_TIMEOUT (120*1000)
111
112	/* Max string input length is a precaution against abuse and to detect junk
113	input easier and better. */
114	#define CURL_MAX_INPUT_LENGTH 8000000
115
116	/* Macros intended for DEBUGF logging, use like:
117	* DEBUGF(infof(data, CFMSG(cf, "this filter %s rocks"), "very much"));
118	* and it will output:
119	* [CONN-1-0][CF-SSL] this filter very much rocks
120	* on connection #1 with sockindex 0 for filter of type "SSL". */
121	#define DMSG(d,msg) \
122	"[CONN-%ld] "msg, (d)->conn->connection_id
123	#define DMSGI(d,i,msg) \
124	"[CONN-%ld-%d] "msg, (d)->conn->connection_id, (i)
125	#define CMSG(c,msg) \
126	"[CONN-%ld] "msg, (conn)->connection_id
127	#define CMSGI(c,i,msg) \
128	"[CONN-%ld-%d] "msg, (conn)->connection_id, (i)
129	#define CFMSG(cf,msg) \
130	"[CONN-%ld-%d][CF-%s] "msg, (cf)->conn->connection_id, \
131	(cf)->sockindex, (cf)->cft->name
132
133
134	#include "cookie.h"
135	#include "psl.h"
136	#include "formdata.h"
137
138	#ifdef HAVE_NETINET_IN_H
139	#include <netinet/in.h>
140	#endif
141	#ifdef HAVE_NETINET_IN6_H
142	#include <netinet/in6.h>
143	#endif
144
145	#include "timeval.h"
146
147	#include <curl/curl.h>
148
149	#include "http_chunks.h" /* for the structs and enum stuff */
150	#include "hostip.h"
151	#include "hash.h"
152	#include "splay.h"
153	#include "dynbuf.h"
154
155	/* return the count of bytes sent, or -1 on error */
156	typedef ssize_t (Curl_send)(struct Curl_easy data, / transfer */
157	int sockindex, /* socketindex */
158	const void buf, / data to write */
159	size_t len, /* max amount to write */
160	CURLcode err); / error to return */
161
162	/* return the count of bytes read, or -1 on error */
163	typedef ssize_t (Curl_recv)(struct Curl_easy data, / transfer */
164	int sockindex, /* socketindex */
165	char buf, / store data here */
166	size_t len, /* max amount to read */
167	CURLcode err); / error to return */
168
169	#ifdef USE_HYPER
170	typedef CURLcode (Curl_datastream)(struct Curl_easy data,
171	struct connectdata *conn,
172	int *didwhat,
173	bool *done,
174	int select_res);
175	#endif
176
177	#include "mime.h"
178	#include "imap.h"
179	#include "pop3.h"
180	#include "smtp.h"
181	#include "ftp.h"
182	#include "file.h"
183	#include "vssh/ssh.h"
184	#include "http.h"
185	#include "rtsp.h"
186	#include "smb.h"
187	#include "mqtt.h"
188	#include "wildcard.h"
189	#include "multihandle.h"
190	#include "quic.h"
191	#include "c-hyper.h"
192
193	#ifdef HAVE_GSSAPI
194	# ifdef HAVE_GSSGNU
195	# include <gss.h>
196	# elif defined HAVE_GSSAPI_GSSAPI_H
197	# include <gssapi/gssapi.h>
198	# else
199	# include <gssapi.h>
200	# endif
201	# ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H
202	# include <gssapi/gssapi_generic.h>
203	# endif
204	#endif
205
206	#ifdef USE_LIBSSH2
207	#include <libssh2.h>
208	#include <libssh2_sftp.h>
209	#endif /* USE_LIBSSH2 */
210
211	#define READBUFFER_SIZE CURL_MAX_WRITE_SIZE
212	#define READBUFFER_MAX CURL_MAX_READ_SIZE
213	#define READBUFFER_MIN 1024
214
215	/* The default upload buffer size, should not be smaller than
216	CURL_MAX_WRITE_SIZE, as it needs to hold a full buffer as could be sent in
217	a write callback.
218
219	The size was 16KB for many years but was bumped to 64KB because it makes
220	libcurl able to do significantly faster uploads in some circumstances. Even
221	larger buffers can help further, but this is deemed a fair memory/speed
222	compromise. */
223	#define UPLOADBUFFER_DEFAULT 65536
224	#define UPLOADBUFFER_MAX (210241024)
225	#define UPLOADBUFFER_MIN CURL_MAX_WRITE_SIZE
226
227	#define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
228	#define GOOD_EASY_HANDLE(x) \
229	((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER))
230
231	#ifdef HAVE_GSSAPI
232	/* Types needed for krb5-ftp connections */
233	struct krb5buffer {
234	void *data;
235	size_t size;
236	size_t index;
237	BIT(eof_flag);
238	};
239
240	enum protection_level {
241	PROT_NONE, /* first in list */
242	PROT_CLEAR,
243	PROT_SAFE,
244	PROT_CONFIDENTIAL,
245	PROT_PRIVATE,
246	PROT_CMD,
247	PROT_LAST /* last in list */
248	};
249	#endif
250
251	/* enum for the nonblocking SSL connection state machine */
252	typedef enum {
253	ssl_connect_1,
254	ssl_connect_2,
255	ssl_connect_2_reading,
256	ssl_connect_2_writing,
257	ssl_connect_3,
258	ssl_connect_done
259	} ssl_connect_state;
260
261	typedef enum {
262	ssl_connection_none,
263	ssl_connection_negotiating,
264	ssl_connection_complete
265	} ssl_connection_state;
266
267	/* SSL backend-specific data; declared differently by each SSL backend */
268	struct ssl_backend_data;
269
270	struct ssl_primary_config {
271	long version; /* what version the client wants to use */
272	long version_max; /* max supported version the client wants to use */
273	char CApath; / certificate dir (doesn't work on windows) */
274	char CAfile; / certificate to verify peer against */
275	char issuercert; / optional issuer certificate filename */
276	char *clientcert;
277	char cipher_list; / list of ciphers to use */
278	char cipher_list13; / list of TLS 1.3 cipher suites to use */
279	char *pinned_key;
280	char CRLfile; / CRL to check certificate revocation */
281	struct curl_blob *cert_blob;
282	struct curl_blob *ca_info_blob;
283	struct curl_blob *issuercert_blob;
284	#ifdef USE_TLS_SRP
285	char username; / TLS username (for, e.g., SRP) */
286	char password; / TLS password (for, e.g., SRP) */
287	enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */
288	#endif
289	char curves; / list of curves to use */
290	unsigned char ssl_options; /* the CURLOPT_SSL_OPTIONS bitmask */
291	BIT(verifypeer); /* set TRUE if this is desired */
292	BIT(verifyhost); /* set TRUE if CN/SAN must match hostname */
293	BIT(verifystatus); /* set TRUE if certificate status must be checked */
294	BIT(sessionid); /* cache session IDs or not */
295	};
296
297	struct ssl_config_data {
298	struct ssl_primary_config primary;
299	long certverifyresult; /* result from the certificate verification */
300	curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
301	void fsslctxp; / parameter for call back */
302	char cert_type; / format for certificate (default: PEM)*/
303	char key; / private key file name */
304	struct curl_blob *key_blob;
305	char key_type; / format for private key (default: PEM) */
306	char key_passwd; / plain text private key password */
307	BIT(certinfo); /* gather lots of certificate info */
308	BIT(falsestart);
309	BIT(enable_beast); /* allow this flaw for interoperability's sake */
310	BIT(no_revoke); /* disable SSL certificate revocation checks */
311	BIT(no_partialchain); /* don't accept partial certificate chains */
312	BIT(revoke_best_effort); /* ignore SSL revocation offline/missing revocation
313	list errors */
314	BIT(native_ca_store); /* use the native ca store of operating system */
315	BIT(auto_client_cert); /* automatically locate and use a client
316	certificate for authentication (Schannel) */
317	};
318
319	struct ssl_general_config {
320	size_t max_ssl_sessions; /* SSL session id cache size */
321	int ca_cache_timeout; /* Certificate store cache timeout (seconds) */
322	};
323
324	/* information stored about one single SSL session */
325	struct Curl_ssl_session {
326	char name; / host name for which this ID was used */
327	char conn_to_host; / host name for the connection (may be NULL) */
328	const char scheme; / protocol scheme used */
329	void sessionid; / as returned from the SSL layer */
330	size_t idsize; /* if known, otherwise 0 */
331	long age; /* just a number, the higher the more recent */
332	int remote_port; /* remote port */
333	int conn_to_port; /* remote port for the connection (may be -1) */
334	struct ssl_primary_config ssl_config; /* setup for this session */
335	};
336
337	#ifdef USE_WINDOWS_SSPI
338	#include "curl_sspi.h"
339	#endif
340
341	/* Struct used for Digest challenge-response authentication */
342	struct digestdata {
343	#if defined(USE_WINDOWS_SSPI)
344	BYTE *input_token;
345	size_t input_token_len;
346	CtxtHandle *http_context;
347	/* copy of user/passwd used to make the identity for http_context.
348	either may be NULL. */
349	char *user;
350	char *passwd;
351	#else
352	char *nonce;
353	char *cnonce;
354	char *realm;
355	char *opaque;
356	char *qop;
357	char *algorithm;
358	int nc; /* nonce count */
359	unsigned char algo;
360	BIT(stale); /* set true for re-negotiation */
361	BIT(userhash);
362	#endif
363	};
364
365	typedef enum {
366	NTLMSTATE_NONE,
367	NTLMSTATE_TYPE1,
368	NTLMSTATE_TYPE2,
369	NTLMSTATE_TYPE3,
370	NTLMSTATE_LAST
371	} curlntlm;
372
373	typedef enum {
374	GSS_AUTHNONE,
375	GSS_AUTHRECV,
376	GSS_AUTHSENT,
377	GSS_AUTHDONE,
378	GSS_AUTHSUCC
379	} curlnegotiate;
380
381	/* Struct used for GSSAPI (Kerberos V5) authentication */
382	#if defined(USE_KERBEROS5)
383	struct kerberos5data {
384	#if defined(USE_WINDOWS_SSPI)
385	CredHandle *credentials;
386	CtxtHandle *context;
387	TCHAR *spn;
388	SEC_WINNT_AUTH_IDENTITY identity;
389	SEC_WINNT_AUTH_IDENTITY *p_identity;
390	size_t token_max;
391	BYTE *output_token;
392	#else
393	gss_ctx_id_t context;
394	gss_name_t spn;
395	#endif
396	};
397	#endif
398
399	/* Struct used for SCRAM-SHA-1 authentication */
400	#ifdef USE_GSASL
401	#include <gsasl.h>
402	struct gsasldata {
403	Gsasl *ctx;
404	Gsasl_session *client;
405	};
406	#endif
407
408	/* Struct used for NTLM challenge-response authentication */
409	#if defined(USE_NTLM)
410	struct ntlmdata {
411	#ifdef USE_WINDOWS_SSPI
412	/* The sslContext is used for the Schannel bindings. The
413	* api is available on the Windows 7 SDK and later.
414	*/
415	#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
416	CtxtHandle *sslContext;
417	#endif
418	CredHandle *credentials;
419	CtxtHandle *context;
420	SEC_WINNT_AUTH_IDENTITY identity;
421	SEC_WINNT_AUTH_IDENTITY *p_identity;
422	size_t token_max;
423	BYTE *output_token;
424	BYTE *input_token;
425	size_t input_token_len;
426	TCHAR *spn;
427	#else
428	unsigned int flags;
429	unsigned char nonce[8];
430	unsigned int target_info_len;
431	void target_info; / TargetInfo received in the ntlm type-2 message */
432
433	#if defined(NTLM_WB_ENABLED)
434	/* used for communication with Samba's winbind daemon helper ntlm_auth */
435	curl_socket_t ntlm_auth_hlpr_socket;
436	pid_t ntlm_auth_hlpr_pid;
437	char challenge; / The received base64 encoded ntlm type-2 message */
438	char response; / The generated base64 ntlm type-1/type-3 message */
439	#endif
440	#endif
441	};
442	#endif
443
444	/* Struct used for Negotiate (SPNEGO) authentication */
445	#ifdef USE_SPNEGO
446	struct negotiatedata {
447	#ifdef HAVE_GSSAPI
448	OM_uint32 status;
449	gss_ctx_id_t context;
450	gss_name_t spn;
451	gss_buffer_desc output_token;
452	#else
453	#ifdef USE_WINDOWS_SSPI
454	#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
455	CtxtHandle *sslContext;
456	#endif
457	DWORD status;
458	CredHandle *credentials;
459	CtxtHandle *context;
460	SEC_WINNT_AUTH_IDENTITY identity;
461	SEC_WINNT_AUTH_IDENTITY *p_identity;
462	TCHAR *spn;
463	size_t token_max;
464	BYTE *output_token;
465	size_t output_token_length;
466	#endif
467	#endif
468	BIT(noauthpersist);
469	BIT(havenoauthpersist);
470	BIT(havenegdata);
471	BIT(havemultiplerequests);
472	};
473	#endif
474
475	#ifdef CURL_DISABLE_PROXY
476	#define CONN_IS_PROXIED(x) 0
477	#else
478	#define CONN_IS_PROXIED(x) x->bits.proxy
479	#endif
480
481	/*
482	* Boolean values that concerns this connection.
483	*/
484	struct ConnectBits {
485	#ifndef CURL_DISABLE_PROXY
486	BIT(httpproxy); /* if set, this transfer is done through an HTTP proxy */
487	BIT(socksproxy); /* if set, this transfer is done through a socks proxy */
488	BIT(proxy_user_passwd); /* user+password for the proxy? */
489	BIT(tunnel_proxy); /* if CONNECT is used to "tunnel" through the proxy.
490	This is implicit when SSL-protocols are used through
491	proxies, but can also be enabled explicitly by
492	apps */
493	BIT(proxy_connect_closed); /* TRUE if a proxy disconnected the connection
494	in a CONNECT request with auth, so that
495	libcurl should reconnect and continue. */
496	BIT(proxy); /* if set, this transfer is done through a proxy - any type */
497	#endif
498	/* always modify bits.close with the connclose() and connkeep() macros! */
499	BIT(close); /* if set, we close the connection after this request */
500	BIT(reuse); /* if set, this is a re-used connection */
501	BIT(altused); /* this is an alt-svc "redirect" */
502	BIT(conn_to_host); /* if set, this connection has a "connect to host"
503	that overrides the host in the URL */
504	BIT(conn_to_port); /* if set, this connection has a "connect to port"
505	that overrides the port in the URL (remote port) */
506	BIT(ipv6_ip); /* we communicate with a remote site specified with pure IPv6
507	IP address */
508	BIT(ipv6); /* we communicate with a site using an IPv6 address */
509	BIT(do_more); /* this is set TRUE if the ->curl_do_more() function is
510	supposed to be called, after ->curl_do() */
511	BIT(protoconnstart);/* the protocol layer has STARTED its operation after
512	the TCP layer connect */
513	BIT(retry); /* this connection is about to get closed and then
514	re-attempted at another connection. */
515	BIT(authneg); /* TRUE when the auth phase has started, which means
516	that we are creating a request with an auth header,
517	but it is not the final request in the auth
518	negotiation. */
519	#ifndef CURL_DISABLE_FTP
520	BIT(ftp_use_epsv); /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
521	EPSV doesn't work we disable it for the forthcoming
522	requests */
523	BIT(ftp_use_eprt); /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
524	EPRT doesn't work we disable it for the forthcoming
525	requests */
526	BIT(ftp_use_data_ssl); /* Enabled SSL for the data connection */
527	BIT(ftp_use_control_ssl); /* Enabled SSL for the control connection */
528	#endif
529	#ifndef CURL_DISABLE_NETRC
530	BIT(netrc); /* name+password provided by netrc */
531	#endif
532	BIT(bound); /* set true if bind() has already been done on this socket/
533	connection */
534	BIT(multiplex); /* connection is multiplexed */
535	BIT(tcp_fastopen); /* use TCP Fast Open */
536	BIT(tls_enable_alpn); /* TLS ALPN extension? */
537	#ifndef CURL_DISABLE_DOH
538	BIT(doh);
539	#endif
540	#ifdef USE_UNIX_SOCKETS
541	BIT(abstract_unix_socket);
542	#endif
543	BIT(tls_upgraded);
544	BIT(sock_accepted); /* TRUE if the SECONDARYSOCKET was created with
545	accept() */
546	BIT(parallel_connect); /* set TRUE when a parallel connect attempt has
547	started (happy eyeballs) */
548	};
549
550	struct hostname {
551	char rawalloc; / allocated "raw" version of the name */
552	char encalloc; / allocated IDN-encoded version of the name */
553	char name; / name to use internally, might be encoded, might be raw */
554	const char dispname; / name to display, as 'name' might be encoded */
555	};
556
557	/*
558	* Flags on the keepon member of the Curl_transfer_keeper
559	*/
560
561	#define KEEP_NONE 0
562	#define KEEP_RECV (1<<0) /* there is or may be data to read */
563	#define KEEP_SEND (1<<1) /* there is or may be data to write */
564	#define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
565	might still be data to read */
566	#define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
567	might still be data to write */
568	#define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
569	#define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
570
571	#define KEEP_RECVBITS (KEEP_RECV \| KEEP_RECV_HOLD \| KEEP_RECV_PAUSE)
572	#define KEEP_SENDBITS (KEEP_SEND \| KEEP_SEND_HOLD \| KEEP_SEND_PAUSE)
573
574	#if defined(CURLRES_ASYNCH) \|\| !defined(CURL_DISABLE_DOH)
575	#define USE_CURL_ASYNC
576	struct Curl_async {
577	char *hostname;
578	struct Curl_dns_entry *dns;
579	struct thread_data *tdata;
580	void resolver; / resolver state, if it is used in the URL state -
581	ares_channel e.g. */
582	int port;
583	int status; /* if done is TRUE, this is the status from the callback */
584	BIT(done); /* set TRUE when the lookup is complete */
585	};
586
587	#endif
588
589	#define FIRSTSOCKET 0
590	#define SECONDARYSOCKET 1
591
592	enum expect100 {
593	EXP100_SEND_DATA, /* enough waiting, just send the body now */
594	EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */
595	EXP100_SENDING_REQUEST, /* still sending the request but will wait for
596	the 100 header once done with the request */
597	EXP100_FAILED /* used on 417 Expectation Failed */
598	};
599
600	enum upgrade101 {
601	UPGR101_INIT, /* default state */
602	UPGR101_WS, /* upgrade to WebSockets requested */
603	UPGR101_H2, /* upgrade to HTTP/2 requested */
604	UPGR101_RECEIVED, /* 101 response received */
605	UPGR101_WORKING /* talking upgraded protocol */
606	};
607
608	enum doh_slots {
609	/* Explicit values for first two symbols so as to match hard-coded
610	* constants in existing code
611	*/
612	DOH_PROBE_SLOT_IPADDR_V4 = 0, /* make 'V4' stand out for readability */
613	DOH_PROBE_SLOT_IPADDR_V6 = 1, /* 'V6' likewise */
614
615	/* Space here for (possibly build-specific) additional slot definitions */
616
617	/* for example */
618	/* #ifdef WANT_DOH_FOOBAR_TXT */
619	/* DOH_PROBE_SLOT_FOOBAR_TXT, */
620	/* #endif */
621
622	/* AFTER all slot definitions, establish how many we have */
623	DOH_PROBE_SLOTS
624	};
625
626	/*
627	* Request specific data in the easy handle (Curl_easy). Previously,
628	* these members were on the connectdata struct but since a conn struct may
629	* now be shared between different Curl_easys, we store connection-specific
630	* data here. This struct only keeps stuff that's interesting for this
631	* request, as it will be cleared between multiple ones
632	*/
633	struct SingleRequest {
634	curl_off_t size; /* -1 if unknown at this point */
635	curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch,
636	-1 means unlimited */
637	curl_off_t bytecount; /* total number of bytes read */
638	curl_off_t writebytecount; /* number of bytes written */
639
640	curl_off_t headerbytecount; /* only count received headers */
641	curl_off_t deductheadercount; /* this amount of bytes doesn't count when we
642	check if anything has been transferred at
643	the end of a connection. We use this
644	counter to make only a 100 reply (without a
645	following second response code) result in a
646	CURLE_GOT_NOTHING error code */
647
648	curl_off_t pendingheader; /* this many bytes left to send is actually
649	header and not body */
650	struct curltime start; /* transfer started at this time */
651	struct curltime now; /* current time */
652	enum {
653	HEADER_NORMAL, /* no bad header at all */
654	HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
655	is normal data */
656	HEADER_ALLBAD /* all was believed to be header */
657	} badheader; /* the header was deemed bad and will be
658	written as body */
659	int headerline; /* counts header lines to better track the
660	first one */
661	char str; / within buf */
662	curl_off_t offset; /* possible resume offset read from the
663	Content-Range: header */
664	int httpcode; /* error code from the 'HTTP/1.? XXX' or
665	'RTSP/1.? XXX' line */
666	int keepon;
667	struct curltime start100; /* time stamp to wait for the 100 code from */
668	enum expect100 exp100; /* expect 100 continue state */
669	enum upgrade101 upgr101; /* 101 upgrade state */
670
671	/* Content unencoding stack. See sec 3.5, RFC2616. */
672	struct contenc_writer *writer_stack;
673	time_t timeofdoc;
674	long bodywrites;
675	char location; / This points to an allocated version of the Location:
676	header data */
677	char newurl; / Set to the new URL to use when a redirect or a retry is
678	wanted */
679
680	/* 'upload_present' is used to keep a byte counter of how much data there is
681	still left in the buffer, aimed for upload. */
682	ssize_t upload_present;
683
684	/* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
685	buffer, so the next read should read from where this pointer points to,
686	and the 'upload_present' contains the number of bytes available at this
687	position */
688	char *upload_fromhere;
689
690	/* Allocated protocol-specific data. Each protocol handler makes sure this
691	points to data it needs. */
692	union {
693	struct FILEPROTO *file;
694	struct FTP *ftp;
695	struct HTTP *http;
696	struct IMAP *imap;
697	struct ldapreqinfo *ldap;
698	struct MQTT *mqtt;
699	struct POP3 *pop3;
700	struct RTSP *rtsp;
701	struct smb_request *smb;
702	struct SMTP *smtp;
703	struct SSHPROTO *ssh;
704	struct TELNET *telnet;
705	} p;
706	#ifndef CURL_DISABLE_DOH
707	struct dohdata doh; / DoH specific data for this request */
708	#endif
709	unsigned char setcookies;
710	BIT(header); /* incoming data has HTTP header */
711	BIT(content_range); /* set TRUE if Content-Range: was found */
712	BIT(upload_done); /* set to TRUE when doing chunked transfer-encoding
713	upload and we're uploading the last chunk */
714	BIT(ignorebody); /* we read a response-body but we ignore it! */
715	BIT(http_bodyless); /* HTTP response status code is between 100 and 199,
716	204 or 304 */
717	BIT(chunk); /* if set, this is a chunked transfer-encoding */
718	BIT(ignore_cl); /* ignore content-length */
719	BIT(upload_chunky); /* set TRUE if we are doing chunked transfer-encoding
720	on upload */
721	BIT(getheader); /* TRUE if header parsing is wanted */
722	BIT(forbidchunk); /* used only to explicitly forbid chunk-upload for
723	specific upload buffers. See readmoredata() in http.c
724	for details. */
725	BIT(no_body); /* the response has no body */
726	};
727
728	/*
729	* Specific protocol handler.
730	*/
731
732	struct Curl_handler {
733	const char scheme; / URL scheme name. */
734
735	/* Complement to setup_connection_internals(). This is done before the
736	transfer "owns" the connection. */
737	CURLcode (setup_connection)(struct Curl_easy data,
738	struct connectdata *conn);
739
740	/* These two functions MUST be set to be protocol dependent */
741	CURLcode (do_it)(struct Curl_easy data, bool *done);
742	CURLcode (done)(struct Curl_easy , CURLcode, bool);
743
744	/* If the curl_do() function is better made in two halves, this
745	* curl_do_more() function will be called afterwards, if set. For example
746	* for doing the FTP stuff after the PASV/PORT command.
747	*/
748	CURLcode (do_more)(struct Curl_easy , int *);
749
750	/* This function MAY be set to a protocol-dependent function that is run
751	* after the connect() and everything is done, as a step in the connection.
752	* The 'done' pointer points to a bool that should be set to TRUE if the
753	* function completes before return. If it doesn't complete, the caller
754	* should call the curl_connecting() function until it is.
755	*/
756	CURLcode (connect_it)(struct Curl_easy data, bool *done);
757
758	/* See above. */
759	CURLcode (connecting)(struct Curl_easy data, bool *done);
760	CURLcode (doing)(struct Curl_easy data, bool *done);
761
762	/* Called from the multi interface during the PROTOCONNECT phase, and it
763	should then return a proper fd set */
764	int (proto_getsock)(struct Curl_easy data,
765	struct connectdata conn, curl_socket_t socks);
766
767	/* Called from the multi interface during the DOING phase, and it should
768	then return a proper fd set */
769	int (doing_getsock)(struct Curl_easy data,
770	struct connectdata conn, curl_socket_t socks);
771
772	/* Called from the multi interface during the DO_MORE phase, and it should
773	then return a proper fd set */
774	int (domore_getsock)(struct Curl_easy data,
775	struct connectdata conn, curl_socket_t socks);
776
777	/* Called from the multi interface during the DO_DONE, PERFORM and
778	WAITPERFORM phases, and it should then return a proper fd set. Not setting
779	this will make libcurl use the generic default one. */
780	int (perform_getsock)(struct Curl_easy data,
781	struct connectdata conn, curl_socket_t socks);
782
783	/* This function MAY be set to a protocol-dependent function that is run
784	* by the curl_disconnect(), as a step in the disconnection. If the handler
785	* is called because the connection has been considered dead,
786	* dead_connection is set to TRUE. The connection is already disassociated
787	* from the transfer here.
788	*/
789	CURLcode (disconnect)(struct Curl_easy , struct connectdata *,
790	bool dead_connection);
791
792	/* If used, this function gets called from transfer.c:readwrite_data() to
793	allow the protocol to do extra reads/writes */
794	CURLcode (readwrite)(struct Curl_easy data, struct connectdata *conn,
795	ssize_t nread, bool readmore);
796
797	/* This function can perform various checks on the connection. See
798	CONNCHECK_* for more information about the checks that can be performed,
799	and CONNRESULT_* for the results that can be returned. */
800	unsigned int (connection_check)(struct Curl_easy data,
801	struct connectdata *conn,
802	unsigned int checks_to_perform);
803
804	/* attach() attaches this transfer to this connection */
805	void (attach)(struct Curl_easy data, struct connectdata *conn);
806
807	int defport; /* Default port. */
808	curl_prot_t protocol; /* See CURLPROTO_* - this needs to be the single
809	specific protocol bit */
810	curl_prot_t family; /* single bit for protocol family; basically the
811	non-TLS name of the protocol this is */
812	unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */
813
814	};
815
816	#define PROTOPT_NONE 0 /* nothing extra */
817	#define PROTOPT_SSL (1<<0) /* uses SSL */
818	#define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */
819	#define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */
820	/* some protocols will have to call the underlying functions without regard to
821	what exact state the socket signals. IE even if the socket says "readable",
822	the send function might need to be called while uploading, or vice versa.
823	*/
824	#define PROTOPT_DIRLOCK (1<<3)
825	#define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */
826	#define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it
827	gets a default */
828	#define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle
829	url query strings (?foo=bar) ! */
830	#define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per
831	request instead of per connection */
832	#define PROTOPT_ALPN (1<<8) /* set ALPN for this */
833	#define PROTOPT_STREAM (1<<9) /* a protocol with individual logical streams */
834	#define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field
835	of the URL */
836	#define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a
837	HTTP proxy as HTTP proxies may know
838	this protocol and act as a gateway */
839	#define PROTOPT_WILDCARD (1<<12) /* protocol supports wildcard matching */
840	#define PROTOPT_USERPWDCTRL (1<<13) /* Allow "control bytes" (< 32 ascii) in
841	user name and password */
842	#define PROTOPT_NOTCPPROXY (1<<14) /* this protocol can't proxy over TCP */
843
844	#define CONNCHECK_NONE 0 /* No checks */
845	#define CONNCHECK_ISDEAD (1<<0) /* Check if the connection is dead. */
846	#define CONNCHECK_KEEPALIVE (1<<1) /* Perform any keepalive function. */
847
848	#define CONNRESULT_NONE 0 /* No extra information. */
849	#define CONNRESULT_DEAD (1<<0) /* The connection is dead. */
850
851	#ifdef USE_RECV_BEFORE_SEND_WORKAROUND
852	struct postponed_data {
853	char buffer; / Temporal store for received data during
854	sending, must be freed */
855	size_t allocated_size; /* Size of temporal store */
856	size_t recv_size; /* Size of received data during sending */
857	size_t recv_processed; /* Size of processed part of postponed data */
858	#ifdef DEBUGBUILD
859	curl_socket_t bindsock;/* Structure must be bound to specific socket,
860	used only for DEBUGASSERT */
861	#endif /* DEBUGBUILD */
862	};
863	#endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
864
865	struct proxy_info {
866	struct hostname host;
867	int port;
868	unsigned char proxytype; /* curl_proxytype: what kind of proxy that is in
869	use */
870	char user; / proxy user name string, allocated */
871	char passwd; / proxy password string, allocated */
872	};
873
874	struct ldapconninfo;
875
876	#define TRNSPRT_TCP 3
877	#define TRNSPRT_UDP 4
878	#define TRNSPRT_QUIC 5
879	#define TRNSPRT_UNIX 6
880
881	/*
882	* The connectdata struct contains all fields and variables that should be
883	* unique for an entire connection.
884	*/
885	struct connectdata {
886	struct Curl_llist_element bundle_node; /* conncache */
887
888	/* chunk is for HTTP chunked encoding, but is in the general connectdata
889	struct only because we can do just about any protocol through an HTTP
890	proxy and an HTTP proxy may in fact respond using chunked encoding */
891	struct Curl_chunker chunk;
892
893	curl_closesocket_callback fclosesocket; /* function closing the socket(s) */
894	void *closesocket_client;
895
896	/* This is used by the connection cache logic. If this returns TRUE, this
897	handle is still used by one or more easy handles and can only used by any
898	other easy handle without careful consideration (== only for
899	multiplexing) and it cannot be used by another multi handle! */
900	#define CONN_INUSE(c) ((c)->easyq.size)
901
902	/**** Fields set when inited and not modified again */
903	long connection_id; /* Contains a unique number to make it easier to
904	track the connections in the log output */
905
906	/* 'dns_entry' is the particular host we use. This points to an entry in the
907	DNS cache and it will not get pruned while locked. It gets unlocked in
908	multi_done(). This entry will be NULL if the connection is re-used as then
909	there is no name resolve done. */
910	struct Curl_dns_entry *dns_entry;
911
912	/* 'ip_addr' is the particular IP we connected to. It points to a struct
913	within the DNS cache, so this pointer is only valid as long as the DNS
914	cache entry remains locked. It gets unlocked in multi_done() */
915	struct Curl_addrinfo *ip_addr;
916	struct Curl_addrinfo tempaddr[2]; / for happy eyeballs */
917
918	#ifdef ENABLE_QUIC
919	struct quicsocket hequic[2]; /* two, for happy eyeballs! */
920	struct quicsocket *quic;
921	#endif
922
923	struct hostname host;
924	char hostname_resolve; / host name to resolve to address, allocated */
925	char secondaryhostname; / secondary socket host name (ftp) */
926	struct hostname conn_to_host; /* the host to connect to. valid only if
927	bits.conn_to_host is set */
928	#ifndef CURL_DISABLE_PROXY
929	struct proxy_info socks_proxy;
930	struct proxy_info http_proxy;
931	#endif
932	/* 'primary_ip' and 'primary_port' get filled with peer's numerical
933	ip address and port number whenever an outgoing connection is
934	attempted from the primary socket to a remote address. When more
935	than one address is tried for a connection these will hold data
936	for the last attempt. When the connection is actually established
937	these are updated with data which comes directly from the socket. */
938
939	char primary_ip[MAX_IPADR_LEN];
940	char user; / user name string, allocated */
941	char passwd; / password string, allocated */
942	char options; / options string, allocated */
943	char sasl_authzid; / authorization identity string, allocated */
944	char oauth_bearer; / OAUTH2 bearer, allocated */
945	struct curltime now; /* "current" time */
946	struct curltime created; /* creation time */
947	struct curltime lastused; /* when returned to the connection cache */
948	curl_socket_t sock[2]; /* two sockets, the second is used for the data
949	transfer when doing FTP */
950	curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */
951	int tempfamily[2]; /* family used for the temp sockets */
952	Curl_recv *recv[2];
953	Curl_send *send[2];
954	struct Curl_cfilter cfilter[2]; / connection filters */
955
956	#ifdef USE_RECV_BEFORE_SEND_WORKAROUND
957	struct postponed_data postponed[2]; /* two buffers for two sockets */
958	#endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
959	struct ssl_primary_config ssl_config;
960	#ifndef CURL_DISABLE_PROXY
961	struct ssl_primary_config proxy_ssl_config;
962	#endif
963	struct ConnectBits bits; /* various state-flags for this connection */
964
965	/* connecttime: when connect() is called on the current IP address. Used to
966	be able to track when to move on to try next IP - but only when the multi
967	interface is used. */
968	struct curltime connecttime;
969
970	/* The field below gets set in Curl_connecthost */
971	/* how long time in milliseconds to spend on trying to connect to each IP
972	address, per family */
973	timediff_t timeoutms_per_addr[2];
974
975	const struct Curl_handler handler; / Connection's protocol handler */
976	const struct Curl_handler given; / The protocol first given */
977
978	/* Protocols can use a custom keepalive mechanism to keep connections alive.
979	This allows those protocols to track the last time the keepalive mechanism
980	was used on this connection. */
981	struct curltime keepalive;
982
983	/**** curl_get() phase fields */
984
985	curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
986	curl_socket_t writesockfd; /* socket to write to, it may very
987	well be the same we read from.
988	CURL_SOCKET_BAD disables */
989
990	#ifdef HAVE_GSSAPI
991	BIT(sec_complete); /* if Kerberos is enabled for this connection */
992	unsigned char command_prot; /* enum protection_level */
993	unsigned char data_prot; /* enum protection_level */
994	unsigned char request_data_prot; /* enum protection_level */
995	size_t buffer_size;
996	struct krb5buffer in_buffer;
997	void *app_data;
998	const struct Curl_sec_client_mech *mech;
999	struct sockaddr_in local_addr;
1000	#endif
1001
1002	#if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */
1003	struct kerberos5data krb5; /* variables into the structure definition, */
1004	#endif /* however, some of them are ftp specific. */
1005
1006	struct Curl_llist easyq; /* List of easy handles using this connection */
1007	curl_seek_callback seek_func; /* function that seeks the input */
1008	void seek_client; / pointer to pass to the seek() above */
1009
1010	/************* Request - specific items **********/
1011	#if defined(USE_WINDOWS_SSPI) && defined(SECPKG_ATTR_ENDPOINT_BINDINGS)
1012	CtxtHandle *sslContext;
1013	#endif
1014
1015	#ifdef USE_GSASL
1016	struct gsasldata gsasl;
1017	#endif
1018
1019	#if defined(USE_NTLM)
1020	curlntlm http_ntlm_state;
1021	curlntlm proxy_ntlm_state;
1022
1023	struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
1024	because it authenticates connections, not
1025	single requests! */
1026	struct ntlmdata proxyntlm; /* NTLM data for proxy */
1027	#endif
1028
1029	#ifdef USE_SPNEGO
1030	curlnegotiate http_negotiate_state;
1031	curlnegotiate proxy_negotiate_state;
1032
1033	struct negotiatedata negotiate; /* state data for host Negotiate auth */
1034	struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
1035	#endif
1036
1037	/* for chunked-encoded trailer */
1038	struct dynbuf trailer;
1039
1040	union {
1041	#ifndef CURL_DISABLE_FTP
1042	struct ftp_conn ftpc;
1043	#endif
1044	#ifndef CURL_DISABLE_HTTP
1045	struct http_conn httpc;
1046	#endif
1047	#ifdef USE_SSH
1048	struct ssh_conn sshc;
1049	#endif
1050	#ifndef CURL_DISABLE_TFTP
1051	struct tftp_state_data *tftpc;
1052	#endif
1053	#ifndef CURL_DISABLE_IMAP
1054	struct imap_conn imapc;
1055	#endif
1056	#ifndef CURL_DISABLE_POP3
1057	struct pop3_conn pop3c;
1058	#endif
1059	#ifndef CURL_DISABLE_SMTP
1060	struct smtp_conn smtpc;
1061	#endif
1062	#ifndef CURL_DISABLE_RTSP
1063	struct rtsp_conn rtspc;
1064	#endif
1065	#ifndef CURL_DISABLE_SMB
1066	struct smb_conn smbc;
1067	#endif
1068	void *rtmp;
1069	struct ldapconninfo *ldapc;
1070	#ifndef CURL_DISABLE_MQTT
1071	struct mqtt_conn mqtt;
1072	#endif
1073	} proto;
1074
1075	struct connectbundle bundle; / The bundle we are member of */
1076	#ifdef USE_UNIX_SOCKETS
1077	char *unix_domain_socket;
1078	#endif
1079	#ifdef USE_HYPER
1080	/* if set, an alternative data transfer function */
1081	Curl_datastream datastream;
1082	#endif
1083	/* When this connection is created, store the conditions for the local end
1084	bind. This is stored before the actual bind and before any connection is
1085	made and will serve the purpose of being used for comparison reasons so
1086	that subsequent bound-requested connections aren't accidentally re-using
1087	wrong connections. */
1088	char *localdev;
1089	int localportrange;
1090	int cselect_bits; /* bitmask of socket events */
1091	int waitfor; /* current READ/WRITE bits to wait for */
1092	#if defined(HAVE_GSSAPI) \|\| defined(USE_WINDOWS_SSPI)
1093	int socks5_gssapi_enctype;
1094	#endif
1095	/* The field below gets set in Curl_connecthost */
1096	int num_addr; /* number of addresses to try to connect to */
1097	int port; /* which port to use locally - to connect to */
1098	int remote_port; /* the remote port, not the proxy port! */
1099	int conn_to_port; /* the remote port to connect to. valid only if
1100	bits.conn_to_port is set */
1101	#ifdef ENABLE_IPV6
1102	unsigned int scope_id; /* Scope id for IPv6 */
1103	#endif
1104	unsigned short localport;
1105	unsigned short secondary_port; /* secondary socket remote port to connect to
1106	(ftp) */
1107	unsigned char alpn; /* APLN TLS negotiated protocol, a CURL_HTTP_VERSION*
1108	value */
1109	unsigned char transport; /* one of the TRNSPRT_* defines */
1110	unsigned char ip_version; /* copied from the Curl_easy at creation time */
1111	unsigned char httpversion; /* the HTTP version10 reported by the server /
1112	unsigned char connect_only;
1113	};
1114
1115	/* The end of connectdata. */
1116
1117	/*
1118	* Struct to keep statistical and informational data.
1119	* All variables in this struct must be initialized/reset in Curl_initinfo().
1120	*/
1121	struct PureInfo {
1122	int httpcode; /* Recent HTTP, FTP, RTSP or SMTP response code */
1123	int httpproxycode; /* response code from proxy when received separate */
1124	int httpversion; /* the http version number X.Y = X10+Y /
1125	time_t filetime; /* If requested, this is might get set. Set to -1 if the
1126	time was unretrievable. */
1127	curl_off_t header_size; /* size of read header(s) in bytes */
1128	curl_off_t request_size; /* the amount of bytes sent in the request(s) */
1129	unsigned long proxyauthavail; /* what proxy auth types were announced */
1130	unsigned long httpauthavail; /* what host auth types were announced */
1131	long numconnects; /* how many new connection did libcurl created */
1132	char contenttype; / the content type of the object */
1133	char wouldredirect; / URL this would've been redirected to if asked to */
1134	curl_off_t retry_after; /* info from Retry-After: header */
1135
1136	/* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
1137	and, 'conn_local_port' are copied over from the connectdata struct in
1138	order to allow curl_easy_getinfo() to return this information even when
1139	the session handle is no longer associated with a connection, and also
1140	allow curl_easy_reset() to clear this information from the session handle
1141	without disturbing information which is still alive, and that might be
1142	reused, in the connection cache. */
1143
1144	char conn_primary_ip[MAX_IPADR_LEN];
1145	int conn_primary_port; /* this is the destination port to the connection,
1146	which might have been a proxy */
1147	int conn_remote_port; /* this is the "remote port", which is the port
1148	number of the used URL, independent of proxy or
1149	not */
1150	char conn_local_ip[MAX_IPADR_LEN];
1151	int conn_local_port;
1152	const char *conn_scheme;
1153	unsigned int conn_protocol;
1154	struct curl_certinfo certs; /* info about the certs, only populated in
1155	OpenSSL, GnuTLS, Schannel, NSS and GSKit
1156	builds. Asked for with CURLOPT_CERTINFO
1157	/ CURLINFO_CERTINFO */
1158	CURLproxycode pxcode;
1159	BIT(timecond); /* set to TRUE if the time condition didn't match, which
1160	thus made the document NOT get fetched */
1161	};
1162
1163
1164	struct Progress {
1165	time_t lastshow; /* time() of the last displayed progress meter or NULL to
1166	force redraw at next call */
1167	curl_off_t size_dl; /* total expected size */
1168	curl_off_t size_ul; /* total expected size */
1169	curl_off_t downloaded; /* transferred so far */
1170	curl_off_t uploaded; /* transferred so far */
1171
1172	curl_off_t current_speed; /* uses the currently fastest transfer */
1173
1174	int width; /* screen width at download start */
1175	int flags; /* see progress.h */
1176
1177	timediff_t timespent;
1178
1179	curl_off_t dlspeed;
1180	curl_off_t ulspeed;
1181
1182	timediff_t t_nslookup;
1183	timediff_t t_connect;
1184	timediff_t t_appconnect;
1185	timediff_t t_pretransfer;
1186	timediff_t t_starttransfer;
1187	timediff_t t_redirect;
1188
1189	struct curltime start;
1190	struct curltime t_startsingle;
1191	struct curltime t_startop;
1192	struct curltime t_acceptdata;
1193
1194
1195	/* upload speed limit */
1196	struct curltime ul_limit_start;
1197	curl_off_t ul_limit_size;
1198	/* download speed limit */
1199	struct curltime dl_limit_start;
1200	curl_off_t dl_limit_size;
1201
1202	#define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */
1203
1204	curl_off_t speeder[ CURR_TIME ];
1205	struct curltime speeder_time[ CURR_TIME ];
1206	int speeder_c;
1207	BIT(callback); /* set when progress callback is used */
1208	BIT(is_t_startransfer_set);
1209	};
1210
1211	typedef enum {
1212	RTSPREQ_NONE, /* first in list */
1213	RTSPREQ_OPTIONS,
1214	RTSPREQ_DESCRIBE,
1215	RTSPREQ_ANNOUNCE,
1216	RTSPREQ_SETUP,
1217	RTSPREQ_PLAY,
1218	RTSPREQ_PAUSE,
1219	RTSPREQ_TEARDOWN,
1220	RTSPREQ_GET_PARAMETER,
1221	RTSPREQ_SET_PARAMETER,
1222	RTSPREQ_RECORD,
1223	RTSPREQ_RECEIVE,
1224	RTSPREQ_LAST /* last in list */
1225	} Curl_RtspReq;
1226
1227	struct auth {
1228	unsigned long want; /* Bitmask set to the authentication methods wanted by
1229	app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1230	unsigned long picked;
1231	unsigned long avail; /* Bitmask for what the server reports to support for
1232	this resource */
1233	BIT(done); /* TRUE when the auth phase is done and ready to do the
1234	actual request */
1235	BIT(multipass); /* TRUE if this is not yet authenticated but within the
1236	auth multipass negotiation */
1237	BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it
1238	should be RFC compliant */
1239	};
1240
1241	struct Curl_http2_dep {
1242	struct Curl_http2_dep *next;
1243	struct Curl_easy *data;
1244	};
1245
1246	/*
1247	* This struct is for holding data that was attempted to get sent to the user's
1248	* callback but is held due to pausing. One instance per type (BOTH, HEADER,
1249	* BODY).
1250	*/
1251	struct tempbuf {
1252	struct dynbuf b;
1253	int type; /* type of the 'tempwrite' buffer as a bitmask that is used with
1254	Curl_client_write() */
1255	};
1256
1257	/* Timers */
1258	typedef enum {
1259	EXPIRE_100_TIMEOUT,
1260	EXPIRE_ASYNC_NAME,
1261	EXPIRE_CONNECTTIMEOUT,
1262	EXPIRE_DNS_PER_NAME, /* family1 */
1263	EXPIRE_DNS_PER_NAME2, /* family2 */
1264	EXPIRE_HAPPY_EYEBALLS_DNS, /* See asyn-ares.c */
1265	EXPIRE_HAPPY_EYEBALLS,
1266	EXPIRE_MULTI_PENDING,
1267	EXPIRE_RUN_NOW,
1268	EXPIRE_SPEEDCHECK,
1269	EXPIRE_TIMEOUT,
1270	EXPIRE_TOOFAST,
1271	EXPIRE_QUIC,
1272	EXPIRE_FTP_ACCEPT,
1273	EXPIRE_LAST /* not an actual timer, used as a marker only */
1274	} expire_id;
1275
1276
1277	typedef enum {
1278	TRAILERS_NONE,
1279	TRAILERS_INITIALIZED,
1280	TRAILERS_SENDING,
1281	TRAILERS_DONE
1282	} trailers_state;
1283
1284
1285	/*
1286	* One instance for each timeout an easy handle can set.
1287	*/
1288	struct time_node {
1289	struct Curl_llist_element list;
1290	struct curltime time;
1291	expire_id eid;
1292	};
1293
1294	/* individual pieces of the URL */
1295	struct urlpieces {
1296	char *scheme;
1297	char *hostname;
1298	char *port;
1299	char *user;
1300	char *password;
1301	char *options;
1302	char *path;
1303	char *query;
1304	};
1305
1306	struct UrlState {
1307	/* Points to the connection cache */
1308	struct conncache *conn_cache;
1309	/* buffers to store authentication data in, as parsed from input options */
1310	struct curltime keeps_speed; /* for the progress meter really */
1311
1312	long lastconnect_id; /* The last connection, -1 if undefined */
1313	struct dynbuf headerb; /* buffer to store headers in */
1314
1315	char buffer; / download buffer */
1316	char ulbuf; / allocated upload buffer or NULL */
1317	curl_off_t current_speed; /* the ProgressShow() function sets this,
1318	bytes / second */
1319
1320	/* host name, port number and protocol of the first (not followed) request.
1321	if set, this should be the host name that we will sent authorization to,
1322	no else. Used to make Location: following not keep sending user+password.
1323	This is strdup()ed data. */
1324	char *first_host;
1325	int first_remote_port;
1326	curl_prot_t first_remote_protocol;
1327
1328	int retrycount; /* number of retries on a new connection */
1329	struct Curl_ssl_session session; / array of 'max_ssl_sessions' size */
1330	long sessionage; /* number of the most recent session */
1331	struct tempbuf tempwrite[3]; /* BOTH, HEADER, BODY */
1332	unsigned int tempcount; /* number of entries in use in tempwrite, 0 - 3 */
1333	int os_errno; /* filled in with errno whenever an error occurs */
1334	char scratch; / huge buffer[set.buffer_size2] for upload CRLF replacing /
1335	long followlocation; /* redirect counter */
1336	int requests; /* request counter: redirects + authentication retakes */
1337	#ifdef HAVE_SIGNAL
1338	/* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1339	void (*prev_signal)(int sig);
1340	#endif
1341	#ifndef CURL_DISABLE_CRYPTO_AUTH
1342	struct digestdata digest; /* state data for host Digest auth */
1343	struct digestdata proxydigest; /* state data for proxy Digest auth */
1344	#endif
1345	struct auth authhost; /* auth details for host */
1346	struct auth authproxy; /* auth details for proxy */
1347	#ifdef USE_CURL_ASYNC
1348	struct Curl_async async; /* asynchronous name resolver data */
1349	#endif
1350
1351	#if defined(USE_OPENSSL)
1352	/* void instead of ENGINE to avoid bleeding OpenSSL into this header */
1353	void *engine;
1354	#endif /* USE_OPENSSL */
1355	struct curltime expiretime; /* set this with Curl_expire() only */
1356	struct Curl_tree timenode; /* for the splay stuff */
1357	struct Curl_llist timeoutlist; /* list of pending timeouts */
1358	struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */
1359
1360	/* a place to store the most recently set (S)FTP entrypath */
1361	char *most_recent_ftp_entrypath;
1362	unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1363	to be used in the library's request(s) */
1364	unsigned char httpversion; /* the lowest HTTP version*10 reported by any
1365	server involved in this request */
1366
1367	#if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__)
1368	/* do FTP line-end conversions on most platforms */
1369	#define CURL_DO_LINEEND_CONV
1370	/* for FTP downloads: track CRLF sequences that span blocks */
1371	BIT(prev_block_had_trailing_cr);
1372	/* for FTP downloads: how many CRLFs did we converted to LFs? */
1373	curl_off_t crlf_conversions;
1374	#endif
1375	char range; / range, if used. See README for detailed specification on
1376	this syntax. */
1377	curl_off_t resume_from; /* continue [ftp] transfer from here */
1378
1379	#ifndef CURL_DISABLE_RTSP
1380	/* This RTSP state information survives requests and connections */
1381	long rtsp_next_client_CSeq; /* the session's next client CSeq */
1382	long rtsp_next_server_CSeq; /* the session's next server CSeq */
1383	long rtsp_CSeq_recv; /* most recent CSeq received */
1384	#endif
1385
1386	curl_off_t infilesize; /* size of file to upload, -1 means unknown.
1387	Copied from set.filesize at start of operation */
1388	#if defined(USE_HTTP2) \|\| defined(USE_HTTP3)
1389	size_t drain; /* Increased when this stream has data to read, even if its
1390	socket is not necessarily is readable. Decreased when
1391	checked. */
1392	#endif
1393
1394	curl_read_callback fread_func; /* read callback/function */
1395	void in; / CURLOPT_READDATA */
1396	#ifdef USE_HTTP2
1397	struct Curl_easy *stream_depends_on;
1398	int stream_weight;
1399	#endif
1400	CURLU uh; / URL handle for the current parsed URL */
1401	struct urlpieces up;
1402	unsigned char httpreq; /* Curl_HttpReq; what kind of HTTP request (if any)
1403	is this */
1404	char url; / work URL, copied from UserDefined */
1405	char referer; / referer string */
1406	#ifndef CURL_DISABLE_COOKIES
1407	struct curl_slist cookielist; / list of cookie files set by
1408	curl_easy_setopt(COOKIEFILE) calls */
1409	#endif
1410	struct curl_slist resolve; / set to point to the set.resolve list when
1411	this should be dealt with in pretransfer */
1412	#ifndef CURL_DISABLE_HTTP
1413	size_t trailers_bytes_sent;
1414	struct dynbuf trailers_buf; /* a buffer containing the compiled trailing
1415	headers */
1416	struct Curl_llist httphdrs; /* received headers */
1417	struct curl_header headerout; /* for external purposes */
1418	struct Curl_header_store prevhead; / the latest added header */
1419	trailers_state trailers_state; /* whether we are sending trailers
1420	and what stage are we at */
1421	#endif
1422	#ifdef USE_HYPER
1423	bool hconnect; /* set if a CONNECT request */
1424	CURLcode hresult; /* used to pass return codes back from hyper callbacks */
1425	#endif
1426
1427	/* Dynamically allocated strings, MUST be freed before this struct is
1428	killed. */
1429	struct dynamically_allocated_data {
1430	char *proxyuserpwd;
1431	char *uagent;
1432	char *accept_encoding;
1433	char *userpwd;
1434	char *rangeline;
1435	char *ref;
1436	char *host;
1437	char *cookiehost;
1438	char *rtsp_transport;
1439	char te; / TE: request header */
1440
1441	/* transfer credentials */
1442	char *user;
1443	char *passwd;
1444	char *proxyuser;
1445	char *proxypasswd;
1446	} aptr;
1447
1448	#ifdef CURLDEBUG
1449	BIT(conncache_lock);
1450	#endif
1451	/* when curl_easy_perform() is called, the multi handle is "owned" by
1452	the easy handle so curl_easy_cleanup() on such an easy handle will
1453	also close the multi handle! */
1454	BIT(multi_owned_by_easy);
1455
1456	BIT(this_is_a_follow); /* this is a followed Location: request */
1457	BIT(refused_stream); /* this was refused, try again */
1458	BIT(errorbuf); /* Set to TRUE if the error buffer is already filled in.
1459	This must be set to FALSE every time _easy_perform() is
1460	called. */
1461	BIT(allow_port); /* Is set.use_port allowed to take effect or not. This
1462	is always set TRUE when curl_easy_perform() is called. */
1463	BIT(authproblem); /* TRUE if there's some problem authenticating */
1464	/* set after initial USER failure, to prevent an authentication loop */
1465	BIT(wildcardmatch); /* enable wildcard matching */
1466	BIT(expect100header); /* TRUE if we added Expect: 100-continue */
1467	BIT(disableexpect); /* TRUE if Expect: is disabled due to a previous
1468	417 response */
1469	BIT(use_range);
1470	BIT(rangestringalloc); /* the range string is malloc()'ed */
1471	BIT(done); /* set to FALSE when Curl_init_do() is called and set to TRUE
1472	when multi_done() is called, to prevent multi_done() to get
1473	invoked twice when the multi interface is used. */
1474	BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1475	BIT(previouslypending); /* this transfer WAS in the multi->pending queue */
1476	BIT(cookie_engine);
1477	BIT(prefer_ascii); /* ASCII rather than binary */
1478	BIT(list_only); /* list directory contents */
1479	BIT(url_alloc); /* URL string is malloc()'ed */
1480	BIT(referer_alloc); /* referer string is malloc()ed */
1481	BIT(wildcard_resolve); /* Set to true if any resolve change is a wildcard */
1482	BIT(rewindbeforesend);/* TRUE when the sending couldn't be stopped even
1483	though it will be discarded. We must call the data
1484	rewind callback before trying to send again. */
1485	};
1486
1487	/*
1488	* This 'UserDefined' struct must only contain data that is set once to go
1489	* for many (perhaps) independent connections. Values that are generated or
1490	* calculated internally for the "session handle" MUST be defined within the
1491	* 'struct UrlState' instead. The only exceptions MUST note the changes in
1492	* the 'DynamicStatic' struct.
1493	* Character pointer fields point to dynamic storage, unless otherwise stated.
1494	*/
1495
1496	struct Curl_multi; /* declared in multihandle.c */
1497
1498	/*
1499	* This enumeration MUST not use conditional directives (#ifdefs), new
1500	* null terminated strings MUST be added to the enumeration immediately
1501	* before STRING_LASTZEROTERMINATED, binary fields immediately before
1502	* STRING_LAST. When doing so, ensure that the packages/OS400/chkstring.c
1503	* test is updated and applicable changes for EBCDIC to ASCII conversion
1504	* are catered for in curl_easy_setopt_ccsid()
1505	*/
1506	enum dupstring {
1507	STRING_CERT, /* client certificate file name */
1508	STRING_CERT_PROXY, /* client certificate file name */
1509	STRING_CERT_TYPE, /* format for certificate (default: PEM)*/
1510	STRING_CERT_TYPE_PROXY, /* format for certificate (default: PEM)*/
1511	STRING_COOKIE, /* HTTP cookie string to send */
1512	STRING_COOKIEJAR, /* dump all cookies to this file */
1513	STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1514	STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL doesn't specify */
1515	STRING_DEVICE, /* local network interface/address to use */
1516	STRING_ENCODING, /* Accept-Encoding string */
1517	STRING_FTP_ACCOUNT, /* ftp account data */
1518	STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1519	STRING_FTPPORT, /* port to send with the FTP PORT command */
1520	STRING_KEY, /* private key file name */
1521	STRING_KEY_PROXY, /* private key file name */
1522	STRING_KEY_PASSWD, /* plain text private key password */
1523	STRING_KEY_PASSWD_PROXY, /* plain text private key password */
1524	STRING_KEY_TYPE, /* format for private key (default: PEM) */
1525	STRING_KEY_TYPE_PROXY, /* format for private key (default: PEM) */
1526	STRING_KRB_LEVEL, /* krb security level */
1527	STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1528	$HOME/.netrc */
1529	STRING_PROXY, /* proxy to use */
1530	STRING_PRE_PROXY, /* pre socks proxy to use */
1531	STRING_SET_RANGE, /* range, if used */
1532	STRING_SET_REFERER, /* custom string for the HTTP referer field */
1533	STRING_SET_URL, /* what original URL to work on */
1534	STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */
1535	STRING_SSL_CAPATH_PROXY, /* CA directory name (doesn't work on windows) */
1536	STRING_SSL_CAFILE, /* certificate file to verify peer against */
1537	STRING_SSL_CAFILE_PROXY, /* certificate file to verify peer against */
1538	STRING_SSL_PINNEDPUBLICKEY, /* public key file to verify peer against */
1539	STRING_SSL_PINNEDPUBLICKEY_PROXY, /* public key file to verify proxy */
1540	STRING_SSL_CIPHER_LIST, /* list of ciphers to use */
1541	STRING_SSL_CIPHER_LIST_PROXY, /* list of ciphers to use */
1542	STRING_SSL_CIPHER13_LIST, /* list of TLS 1.3 ciphers to use */
1543	STRING_SSL_CIPHER13_LIST_PROXY, /* list of TLS 1.3 ciphers to use */
1544	STRING_USERAGENT, /* User-Agent string */
1545	STRING_SSL_CRLFILE, /* crl file to check certificate */
1546	STRING_SSL_CRLFILE_PROXY, /* crl file to check certificate */
1547	STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */
1548	STRING_SSL_ISSUERCERT_PROXY, /* issuer cert file to check certificate */
1549	STRING_SSL_ENGINE, /* name of ssl engine */
1550	STRING_USERNAME, /* <username>, if used */
1551	STRING_PASSWORD, /* <password>, if used */
1552	STRING_OPTIONS, /* <options>, if used */
1553	STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1554	STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1555	STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1556	used */
1557	STRING_RTSP_SESSION_ID, /* Session ID to use */
1558	STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1559	STRING_RTSP_TRANSPORT, /* Transport for this session */
1560	STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1561	STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1562	STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */
1563	STRING_SSH_HOST_PUBLIC_KEY_SHA256, /* sha256 of host public key in base64 */
1564	STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */
1565	STRING_PROXY_SERVICE_NAME, /* Proxy service name */
1566	STRING_SERVICE_NAME, /* Service name */
1567	STRING_MAIL_FROM,
1568	STRING_MAIL_AUTH,
1569	STRING_TLSAUTH_USERNAME, /* TLS auth <username> */
1570	STRING_TLSAUTH_USERNAME_PROXY, /* TLS auth <username> */
1571	STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */
1572	STRING_TLSAUTH_PASSWORD_PROXY, /* TLS auth <password> */
1573	STRING_BEARER, /* <bearer>, if used */
1574	STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */
1575	STRING_TARGET, /* CURLOPT_REQUEST_TARGET */
1576	STRING_DOH, /* CURLOPT_DOH_URL */
1577	STRING_ALTSVC, /* CURLOPT_ALTSVC */
1578	STRING_HSTS, /* CURLOPT_HSTS */
1579	STRING_SASL_AUTHZID, /* CURLOPT_SASL_AUTHZID */
1580	STRING_DNS_SERVERS,
1581	STRING_DNS_INTERFACE,
1582	STRING_DNS_LOCAL_IP4,
1583	STRING_DNS_LOCAL_IP6,
1584	STRING_SSL_EC_CURVES,
1585
1586	/* -- end of null-terminated strings -- */
1587
1588	STRING_LASTZEROTERMINATED,
1589
1590	/* -- below this are pointers to binary data that cannot be strdup'ed. --- */
1591
1592	STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1593
1594	STRING_AWS_SIGV4, /* Parameters for V4 signature */
1595
1596	STRING_LAST /* not used, just an end-of-list marker */
1597	};
1598
1599	enum dupblob {
1600	BLOB_CERT,
1601	BLOB_CERT_PROXY,
1602	BLOB_KEY,
1603	BLOB_KEY_PROXY,
1604	BLOB_SSL_ISSUERCERT,
1605	BLOB_SSL_ISSUERCERT_PROXY,
1606	BLOB_CAINFO,
1607	BLOB_CAINFO_PROXY,
1608	BLOB_LAST
1609	};
1610
1611	/* callback that gets called when this easy handle is completed within a multi
1612	handle. Only used for internally created transfers, like for example
1613	DoH. */
1614	typedef int (multidone_func)(struct Curl_easy easy, CURLcode result);
1615
1616	struct UserDefined {
1617	FILE err; / the stderr user data goes here */
1618	void debugdata; / the data that will be passed to fdebug */
1619	char errorbuffer; / (Static) store failure messages in here */
1620	void out; / CURLOPT_WRITEDATA */
1621	void in_set; / CURLOPT_READDATA */
1622	void writeheader; / write the header to this if non-NULL */
1623	unsigned short proxyport; /* If non-zero, use this port number by
1624	default. If the proxy string features a
1625	":[port]" that one will override this. */
1626	unsigned short use_port; /* which port to use (when not using default) */
1627	unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
1628	unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
1629	#ifndef CURL_DISABLE_PROXY
1630	unsigned char socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
1631	#endif
1632	long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1633	for infinity */
1634
1635	void postfields; / if POST, set the fields' values here */
1636	curl_seek_callback seek_func; /* function that seeks the input */
1637	curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1638	of strlen(), and then the data may be binary
1639	(contain zero bytes) */
1640	unsigned short localport; /* local port number to bind to */
1641	int localportrange; /* number of additional port numbers to test in case the
1642	'localport' one can't be bind()ed */
1643	curl_write_callback fwrite_func; /* function that stores the output */
1644	curl_write_callback fwrite_header; /* function that stores headers */
1645	curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1646	curl_read_callback fread_func_set; /* function that reads the input */
1647	curl_progress_callback fprogress; /* OLD and deprecated progress callback */
1648	curl_xferinfo_callback fxferinfo; /* progress callback */
1649	curl_debug_callback fdebug; /* function that write informational data */
1650	curl_ioctl_callback ioctl_func; /* function for I/O control */
1651	curl_sockopt_callback fsockopt; /* function for setting socket options */
1652	void sockopt_client; / pointer to pass to the socket options callback */
1653	curl_opensocket_callback fopensocket; /* function for checking/translating
1654	the address and opening the
1655	socket */
1656	void *opensocket_client;
1657	curl_closesocket_callback fclosesocket; /* function for closing the
1658	socket */
1659	void *closesocket_client;
1660	curl_prereq_callback fprereq; /* pre-initial request callback */
1661	void prereq_userp; / pre-initial request user data */
1662
1663	void seek_client; / pointer to pass to the seek callback */
1664	#ifndef CURL_DISABLE_HSTS
1665	curl_hstsread_callback hsts_read;
1666	void *hsts_read_userp;
1667	curl_hstswrite_callback hsts_write;
1668	void *hsts_write_userp;
1669	#endif
1670	void progress_client; / pointer to pass to the progress callback */
1671	void ioctl_client; / pointer to pass to the ioctl callback */
1672	unsigned int timeout; /* ms, 0 means no timeout */
1673	unsigned int connecttimeout; /* ms, 0 means no timeout */
1674	unsigned int happy_eyeballs_timeout; /* ms, 0 is a valid value */
1675	unsigned int server_response_timeout; /* ms, 0 means no timeout */
1676	long maxage_conn; /* in seconds, max idle time to allow a connection that
1677	is to be reused */
1678	long maxlifetime_conn; /* in seconds, max time since creation to allow a
1679	connection that is to be reused */
1680	#ifndef CURL_DISABLE_TFTP
1681	long tftp_blksize; /* in bytes, 0 means use default */
1682	#endif
1683	curl_off_t filesize; /* size of file to upload, -1 means unknown */
1684	long low_speed_limit; /* bytes/second */
1685	long low_speed_time; /* number of seconds */
1686	curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1687	curl_off_t max_recv_speed; /* high speed limit in bytes/second for
1688	download */
1689	curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1690	struct curl_slist headers; / linked list of extra headers */
1691	struct curl_slist proxyheaders; / linked list of extra CONNECT headers */
1692	struct curl_httppost httppost; / linked list of old POST data */
1693	curl_mimepart mimepost; /* MIME/POST data. */
1694	struct curl_slist quote; / after connection is established */
1695	struct curl_slist postquote; / after the transfer */
1696	struct curl_slist prequote; / before the transfer, after type */
1697	struct curl_slist source_quote; / 3rd party quote */
1698	struct curl_slist source_prequote; / in 3rd party transfer mode - before
1699	the transfer on source host */
1700	struct curl_slist source_postquote; / in 3rd party transfer mode - after
1701	the transfer on source host */
1702	#ifndef CURL_DISABLE_TELNET
1703	struct curl_slist telnet_options; / linked list of telnet options */
1704	#endif
1705	struct curl_slist resolve; / list of names to add/remove from
1706	DNS cache */
1707	struct curl_slist connect_to; / list of host:port mappings to override
1708	the hostname and port to connect to */
1709	time_t timevalue; /* what time to compare with */
1710	unsigned char timecondition; /* kind of time comparison: curl_TimeCond */
1711	unsigned char proxytype; /* what kind of proxy: curl_proxytype */
1712	unsigned char method; /* what kind of HTTP request: Curl_HttpReq */
1713	unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1714	to be used in the library's request(s) */
1715	struct ssl_config_data ssl; /* user defined SSL stuff */
1716	#ifndef CURL_DISABLE_PROXY
1717	struct ssl_config_data proxy_ssl; /* user defined SSL stuff for proxy */
1718	#endif
1719	struct ssl_general_config general_ssl; /* general user defined SSL stuff */
1720	int dns_cache_timeout; /* DNS cache timeout (seconds) */
1721	unsigned int buffer_size; /* size of receive buffer to use */
1722	unsigned int upload_buffer_size; /* size of upload buffer to use,
1723	keep it >= CURL_MAX_WRITE_SIZE */
1724	void private_data; / application-private data */
1725	struct curl_slist http200aliases; / linked list of aliases for http200 */
1726	unsigned char ipver; /* the CURL_IPRESOLVE_* defines in the public header
1727	file 0 - whatever, 1 - v2, 2 - v6 */
1728	curl_off_t max_filesize; /* Maximum file size to download */
1729	#ifndef CURL_DISABLE_FTP
1730	unsigned char ftp_filemethod; /* how to get to a file: curl_ftpfile */
1731	unsigned char ftpsslauth; /* what AUTH XXX to try: curl_ftpauth */
1732	unsigned char ftp_ccc; /* FTP CCC options: curl_ftpccc */
1733	unsigned int accepttimeout; /* in milliseconds, 0 means no timeout */
1734	#endif
1735	/* Desppie the name ftp_create_missing_dirs is for FTP(S) and SFTP
1736	1 - create directories that don't exist
1737	2 - the same but also allow MKD to fail once
1738	*/
1739	unsigned char ftp_create_missing_dirs;
1740	#ifdef USE_LIBSSH2
1741	curl_sshhostkeycallback ssh_hostkeyfunc; /* hostkey check callback */
1742	void ssh_hostkeyfunc_userp; / custom pointer to callback */
1743	#endif
1744
1745	curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1746	void ssh_keyfunc_userp; / custom pointer to callback */
1747	#ifndef CURL_DISABLE_NETRC
1748	unsigned char use_netrc; /* enum CURL_NETRC_OPTION values */
1749	#endif
1750	curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1751	IMAP or POP3 or others! */
1752	unsigned int new_file_perms; /* when creating remote files */
1753	unsigned int new_directory_perms; /* when creating remote dirs */
1754	int ssh_auth_types; /* allowed SSH auth types */
1755	char str[STRING_LAST]; / array of strings, pointing to allocated memory */
1756	struct curl_blob *blobs[BLOB_LAST];
1757	#ifdef ENABLE_IPV6
1758	unsigned int scope_id; /* Scope id for IPv6 */
1759	#endif
1760	curl_prot_t allowed_protocols;
1761	curl_prot_t redir_protocols;
1762	unsigned int mime_options; /* Mime option flags. */
1763
1764	#ifndef CURL_DISABLE_RTSP
1765	void rtp_out; / write RTP to this if non-NULL */
1766	/* Common RTSP header options */
1767	Curl_RtspReq rtspreq; /* RTSP request type */
1768	#endif
1769	#ifndef CURL_DISABLE_FTP
1770	curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer
1771	starts */
1772	curl_chunk_end_callback chunk_end; /* called after part transferring
1773	stopped */
1774	curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1775	to pattern (e.g. if WILDCARDMATCH is on) */
1776	void *fnmatch_data;
1777	#endif
1778	long gssapi_delegation; /* GSS-API credential delegation, see the
1779	documentation of CURLOPT_GSSAPI_DELEGATION */
1780
1781	int tcp_keepidle; /* seconds in idle before sending keepalive probe */
1782	int tcp_keepintvl; /* seconds between TCP keepalive probes */
1783
1784	size_t maxconnects; /* Max idle connections in the connection cache */
1785
1786	long expect_100_timeout; /* in milliseconds */
1787	#ifdef USE_HTTP2
1788	struct Curl_easy *stream_depends_on;
1789	int stream_weight;
1790	struct Curl_http2_dep *stream_dependents;
1791	#endif
1792	curl_resolver_start_callback resolver_start; /* optional callback called
1793	before resolver start */
1794	void resolver_start_client; / pointer to pass to resolver start callback */
1795	long upkeep_interval_ms; /* Time between calls for connection upkeep. */
1796	multidone_func fmultidone;
1797	#ifndef CURL_DISABLE_DOH
1798	struct Curl_easy dohfor; / this is a DoH request for that transfer */
1799	#endif
1800	CURLU uh; / URL handle for the current parsed URL */
1801	void trailer_data; / pointer to pass to trailer data callback */
1802	curl_trailer_callback trailer_callback; /* trailing data callback */
1803	char keep_post; /* keep POSTs as POSTs after a 30x request; each
1804	bit represents a request, from 301 to 303 */
1805	#ifndef CURL_DISABLE_SMTP
1806	struct curl_slist mail_rcpt; / linked list of mail recipients */
1807	BIT(mail_rcpt_allowfails); /* allow RCPT TO command to fail for some
1808	recipients */
1809	#endif
1810	unsigned char connect_only; /* make connection/request, then let
1811	application use the socket */
1812	BIT(is_fread_set); /* has read callback been set to non-NULL? */
1813	#ifndef CURL_DISABLE_TFTP
1814	BIT(tftp_no_options); /* do not send TFTP options requests */
1815	#endif
1816	BIT(sep_headers); /* handle host and proxy headers separately */
1817	BIT(cookiesession); /* new cookie session? */
1818	BIT(crlf); /* convert crlf on ftp upload(?) */
1819	BIT(ssh_compression); /* enable SSH compression */
1820
1821	/* Here follows boolean settings that define how to behave during
1822	this session. They are STATIC, set by libcurl users or at least initially
1823	and they don't change during operations. */
1824	BIT(quick_exit); /* set 1L when it is okay to leak things (like
1825	threads), as we're about to exit() anyway and
1826	don't want lengthy cleanups to delay termination,
1827	e.g. after a DNS timeout */
1828	BIT(get_filetime); /* get the time and get of the remote file */
1829	BIT(tunnel_thru_httpproxy); /* use CONNECT through an HTTP proxy */
1830	BIT(prefer_ascii); /* ASCII rather than binary */
1831	BIT(remote_append); /* append, not overwrite, on upload */
1832	BIT(list_only); /* list directory */
1833	#ifndef CURL_DISABLE_FTP
1834	BIT(ftp_use_port); /* use the FTP PORT command */
1835	BIT(ftp_use_epsv); /* if EPSV is to be attempted or not */
1836	BIT(ftp_use_eprt); /* if EPRT is to be attempted or not */
1837	BIT(ftp_use_pret); /* if PRET is to be used before PASV or not */
1838	BIT(ftp_skip_ip); /* skip the IP address the FTP server passes on to
1839	us */
1840	BIT(wildcard_enabled); /* enable wildcard matching */
1841	#endif
1842	BIT(hide_progress); /* don't use the progress meter */
1843	BIT(http_fail_on_error); /* fail on HTTP error codes >= 400 */
1844	BIT(http_keep_sending_on_error); /* for HTTP status codes >= 300 */
1845	BIT(http_follow_location); /* follow HTTP redirects */
1846	BIT(http_transfer_encoding); /* request compressed HTTP transfer-encoding */
1847	BIT(allow_auth_to_other_hosts);
1848	BIT(include_header); /* include received protocol headers in data output */
1849	BIT(http_set_referer); /* is a custom referer used */
1850	BIT(http_auto_referer); /* set "correct" referer when following
1851	location: */
1852	BIT(opt_no_body); /* as set with CURLOPT_NOBODY */
1853	BIT(upload); /* upload request */
1854	BIT(verbose); /* output verbosity */
1855	BIT(krb); /* Kerberos connection requested */
1856	BIT(reuse_forbid); /* forbidden to be reused, close after use */
1857	BIT(reuse_fresh); /* do not re-use an existing connection */
1858	BIT(no_signal); /* do not use any signal/alarm handler */
1859	BIT(tcp_nodelay); /* whether to enable TCP_NODELAY or not */
1860	BIT(ignorecl); /* ignore content length */
1861	BIT(http_te_skip); /* pass the raw body data to the user, even when
1862	transfer-encoded (chunked, compressed) */
1863	BIT(http_ce_skip); /* pass the raw body data to the user, even when
1864	content-encoded (chunked, compressed) */
1865	BIT(proxy_transfer_mode); /* set transfer mode (;type=<a\|i>) when doing
1866	FTP via an HTTP proxy */
1867	#if defined(HAVE_GSSAPI) \|\| defined(USE_WINDOWS_SSPI)
1868	BIT(socks5_gssapi_nec); /* Flag to support NEC SOCKS5 server */
1869	#endif
1870	BIT(sasl_ir); /* Enable/disable SASL initial response */
1871	BIT(tcp_keepalive); /* use TCP keepalives */
1872	BIT(tcp_fastopen); /* use TCP Fast Open */
1873	BIT(ssl_enable_alpn);/* TLS ALPN extension? */
1874	BIT(path_as_is); /* allow dotdots? */
1875	BIT(pipewait); /* wait for multiplex status before starting a new
1876	connection */
1877	BIT(suppress_connect_headers); /* suppress proxy CONNECT response headers
1878	from user callbacks */
1879	BIT(dns_shuffle_addresses); /* whether to shuffle addresses before use */
1880	BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1881	BIT(haproxyprotocol); /* whether to send HAProxy PROXY protocol v1
1882	header */
1883	BIT(abstract_unix_socket);
1884	BIT(disallow_username_in_url); /* disallow username in url */
1885	#ifndef CURL_DISABLE_DOH
1886	BIT(doh); /* DNS-over-HTTPS enabled */
1887	BIT(doh_verifypeer); /* DoH certificate peer verification */
1888	BIT(doh_verifyhost); /* DoH certificate hostname verification */
1889	BIT(doh_verifystatus); /* DoH certificate status verification */
1890	#endif
1891	BIT(http09_allowed); /* allow HTTP/0.9 responses */
1892	#ifdef USE_WEBSOCKETS
1893	BIT(ws_raw_mode);
1894	#endif
1895	};
1896
1897	struct Names {
1898	struct Curl_hash *hostcache;
1899	enum {
1900	HCACHE_NONE, /* not pointing to anything */
1901	HCACHE_MULTI, /* points to a shared one in the multi handle */
1902	HCACHE_SHARED /* points to a shared one in a shared object */
1903	} hostcachetype;
1904	};
1905
1906	/*
1907	* The 'connectdata' struct MUST have all the connection oriented stuff as we
1908	* may have several simultaneous connections and connection structs in memory.
1909	*
1910	* The 'struct UserDefined' must only contain data that is set once to go for
1911	* many (perhaps) independent connections. Values that are generated or
1912	* calculated internally for the "session handle" must be defined within the
1913	* 'struct UrlState' instead.
1914	*/
1915
1916	struct Curl_easy {
1917	/* First a simple identifier to easier detect if a user mix up this easy
1918	handle with a multi handle. Set this to CURLEASY_MAGIC_NUMBER */
1919	unsigned int magic;
1920
1921	/* first, two fields for the linked list of these */
1922	struct Curl_easy *next;
1923	struct Curl_easy *prev;
1924
1925	struct connectdata *conn;
1926	struct Curl_llist_element connect_queue;
1927	struct Curl_llist_element conn_queue; /* list per connectdata */
1928
1929	CURLMstate mstate; /* the handle's state */
1930	CURLcode result; /* previous result */
1931
1932	struct Curl_message msg; /* A single posted message. */
1933
1934	/* Array with the plain socket numbers this handle takes care of, in no
1935	particular order. Note that all sockets are added to the sockhash, where
1936	the state etc are also kept. This array is mostly used to detect when a
1937	socket is to be removed from the hash. See singlesocket(). */
1938	curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE];
1939	unsigned char actions[MAX_SOCKSPEREASYHANDLE]; /* action for each socket in
1940	sockets[] */
1941	int numsocks;
1942
1943	struct Names dns;
1944	struct Curl_multi multi; / if non-NULL, points to the multi handle
1945	struct to which this "belongs" when used by
1946	the multi interface */
1947	struct Curl_multi multi_easy; / if non-NULL, points to the multi handle
1948	struct to which this "belongs" when used
1949	by the easy interface */
1950	struct Curl_share share; / Share, handles global variable mutexing */
1951	#ifdef USE_LIBPSL
1952	struct PslCache psl; / The associated PSL cache. */
1953	#endif
1954	struct SingleRequest req; /* Request-specific data */
1955	struct UserDefined set; /* values set by the libcurl user */
1956	#ifndef CURL_DISABLE_COOKIES
1957	struct CookieInfo cookies; / the cookies, read from files and servers.
1958	NOTE that the 'cookie' field in the
1959	UserDefined struct defines if the "engine"
1960	is to be used or not. */
1961	#endif
1962	#ifndef CURL_DISABLE_HSTS
1963	struct hsts *hsts;
1964	#endif
1965	#ifndef CURL_DISABLE_ALTSVC
1966	struct altsvcinfo asi; / the alt-svc cache */
1967	#endif
1968	struct Progress progress; /* for all the progress meter data */
1969	struct UrlState state; /* struct for fields used for state info and
1970	other dynamic purposes */
1971	#ifndef CURL_DISABLE_FTP
1972	struct WildcardData wildcard; /* wildcard download state info */
1973	#endif
1974	struct PureInfo info; /* stats, reports and info data */
1975	struct curl_tlssessioninfo tsi; /* Information about the TLS session, only
1976	valid after a client has asked for it */
1977	#ifdef USE_HYPER
1978	struct hyptransfer hyp;
1979	#endif
1980	};
1981
1982	#define LIBCURL_NAME "libcurl"
1983
1984	#endif /* HEADER_CURL_URLDATA_H */

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source: vbox/trunk/src/libs/curl-7.87.0/lib/urldata.h@ 98339

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