1#ifndef HEADER_CURL_URLDATA_H
2#define HEADER_CURL_URLDATA_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, 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 ***************************************************************************/
24
25/* This file is for lib internal stuff */
26
27#include "curl_setup.h"
28
29#define PORT_FTP 21
30#define PORT_FTPS 990
31#define PORT_TELNET 23
32#define PORT_HTTP 80
33#define PORT_HTTPS 443
34#define PORT_DICT 2628
35#define PORT_LDAP 389
36#define PORT_LDAPS 636
37#define PORT_TFTP 69
38#define PORT_SSH 22
39#define PORT_IMAP 143
40#define PORT_IMAPS 993
41#define PORT_POP3 110
42#define PORT_POP3S 995
43#define PORT_SMB 445
44#define PORT_SMBS 445
45#define PORT_SMTP 25
46#define PORT_SMTPS 465 /* sometimes called SSMTP */
47#define PORT_RTSP 554
48#define PORT_RTMP 1935
49#define PORT_RTMPT PORT_HTTP
50#define PORT_RTMPS PORT_HTTPS
51#define PORT_GOPHER 70
52#define PORT_MQTT 1883
53
54#define DICT_MATCH "/MATCH:"
55#define DICT_MATCH2 "/M:"
56#define DICT_MATCH3 "/FIND:"
57#define DICT_DEFINE "/DEFINE:"
58#define DICT_DEFINE2 "/D:"
59#define DICT_DEFINE3 "/LOOKUP:"
60
61#define CURL_DEFAULT_USER "anonymous"
62#define CURL_DEFAULT_PASSWORD "ftp@example.com"
63
64/* Convenience defines for checking protocols or their SSL based version. Each
65 protocol handler should only ever have a single CURLPROTO_ in its protocol
66 field. */
67#define PROTO_FAMILY_HTTP (CURLPROTO_HTTP|CURLPROTO_HTTPS)
68#define PROTO_FAMILY_FTP (CURLPROTO_FTP|CURLPROTO_FTPS)
69#define PROTO_FAMILY_POP3 (CURLPROTO_POP3|CURLPROTO_POP3S)
70#define PROTO_FAMILY_SMB (CURLPROTO_SMB|CURLPROTO_SMBS)
71#define PROTO_FAMILY_SMTP (CURLPROTO_SMTP|CURLPROTO_SMTPS)
72#define PROTO_FAMILY_SSH (CURLPROTO_SCP|CURLPROTO_SFTP)
73
74#define DEFAULT_CONNCACHE_SIZE 5
75
76/* length of longest IPv6 address string including the trailing null */
77#define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")
78
79/* Default FTP/IMAP etc response timeout in milliseconds */
80#define RESP_TIMEOUT (120*1000)
81
82/* Max string input length is a precaution against abuse and to detect junk
83 input easier and better. */
84#define CURL_MAX_INPUT_LENGTH 8000000
85
86#include "cookie.h"
87#include "psl.h"
88#include "formdata.h"
89
90#ifdef HAVE_NETINET_IN_H
91#include <netinet/in.h>
92#endif
93#ifdef HAVE_NETINET_IN6_H
94#include <netinet/in6.h>
95#endif
96
97#include "timeval.h"
98
99#include <curl/curl.h>
100
101#include "http_chunks.h" /* for the structs and enum stuff */
102#include "hostip.h"
103#include "hash.h"
104#include "splay.h"
105#include "dynbuf.h"
106
107/* return the count of bytes sent, or -1 on error */
108typedef ssize_t (Curl_send)(struct Curl_easy *data, /* transfer */
109 int sockindex, /* socketindex */
110 const void *buf, /* data to write */
111 size_t len, /* max amount to write */
112 CURLcode *err); /* error to return */
113
114/* return the count of bytes read, or -1 on error */
115typedef ssize_t (Curl_recv)(struct Curl_easy *data, /* transfer */
116 int sockindex, /* socketindex */
117 char *buf, /* store data here */
118 size_t len, /* max amount to read */
119 CURLcode *err); /* error to return */
120
121#ifdef USE_HYPER
122typedef CURLcode (*Curl_datastream)(struct Curl_easy *data,
123 struct connectdata *conn,
124 int *didwhat,
125 bool *done,
126 int select_res);
127#endif
128
129#include "mime.h"
130#include "imap.h"
131#include "pop3.h"
132#include "smtp.h"
133#include "ftp.h"
134#include "file.h"
135#include "vssh/ssh.h"
136#include "http.h"
137#include "rtsp.h"
138#include "smb.h"
139#include "mqtt.h"
140#include "wildcard.h"
141#include "multihandle.h"
142#include "quic.h"
143#include "c-hyper.h"
144
145#ifdef HAVE_GSSAPI
146# ifdef HAVE_GSSGNU
147# include <gss.h>
148# elif defined HAVE_GSSAPI_GSSAPI_H
149# include <gssapi/gssapi.h>
150# else
151# include <gssapi.h>
152# endif
153# ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H
154# include <gssapi/gssapi_generic.h>
155# endif
156#endif
157
158#ifdef HAVE_LIBSSH2_H
159#include <libssh2.h>
160#include <libssh2_sftp.h>
161#endif /* HAVE_LIBSSH2_H */
162
163#define READBUFFER_SIZE CURL_MAX_WRITE_SIZE
164#define READBUFFER_MAX CURL_MAX_READ_SIZE
165#define READBUFFER_MIN 1024
166
167/* The default upload buffer size, should not be smaller than
168 CURL_MAX_WRITE_SIZE, as it needs to hold a full buffer as could be sent in
169 a write callback.
170
171 The size was 16KB for many years but was bumped to 64KB because it makes
172 libcurl able to do significantly faster uploads in some circumstances. Even
173 larger buffers can help further, but this is deemed a fair memory/speed
174 compromise. */
175#define UPLOADBUFFER_DEFAULT 65536
176#define UPLOADBUFFER_MAX (2*1024*1024)
177#define UPLOADBUFFER_MIN CURL_MAX_WRITE_SIZE
178
179#define CURLEASY_MAGIC_NUMBER 0xc0dedbadU
180#define GOOD_EASY_HANDLE(x) \
181 ((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER))
182
183/* the type we use for storing a single boolean bit */
184#ifdef _MSC_VER
185typedef bool bit;
186#define BIT(x) bool x
187#else
188typedef unsigned int bit;
189#define BIT(x) bit x:1
190#endif
191
192#ifdef HAVE_GSSAPI
193/* Types needed for krb5-ftp connections */
194struct krb5buffer {
195 void *data;
196 size_t size;
197 size_t index;
198 BIT(eof_flag);
199};
200
201enum protection_level {
202 PROT_NONE, /* first in list */
203 PROT_CLEAR,
204 PROT_SAFE,
205 PROT_CONFIDENTIAL,
206 PROT_PRIVATE,
207 PROT_CMD,
208 PROT_LAST /* last in list */
209};
210#endif
211
212/* enum for the nonblocking SSL connection state machine */
213typedef enum {
214 ssl_connect_1,
215 ssl_connect_2,
216 ssl_connect_2_reading,
217 ssl_connect_2_writing,
218 ssl_connect_3,
219 ssl_connect_done
220} ssl_connect_state;
221
222typedef enum {
223 ssl_connection_none,
224 ssl_connection_negotiating,
225 ssl_connection_complete
226} ssl_connection_state;
227
228/* SSL backend-specific data; declared differently by each SSL backend */
229struct ssl_backend_data;
230
231/* struct for data related to each SSL connection */
232struct ssl_connect_data {
233 ssl_connection_state state;
234 ssl_connect_state connecting_state;
235#if defined(USE_SSL)
236 struct ssl_backend_data *backend;
237#endif
238 /* Use ssl encrypted communications TRUE/FALSE. The library is not
239 necessarily using ssl at the moment but at least asked to or means to use
240 it. See 'state' for the exact current state of the connection. */
241 BIT(use);
242};
243
244struct ssl_primary_config {
245 long version; /* what version the client wants to use */
246 long version_max; /* max supported version the client wants to use*/
247 char *CApath; /* certificate dir (doesn't work on windows) */
248 char *CAfile; /* certificate to verify peer against */
249 char *issuercert; /* optional issuer certificate filename */
250 char *clientcert;
251 char *random_file; /* path to file containing "random" data */
252 char *egdsocket; /* path to file containing the EGD daemon socket */
253 char *cipher_list; /* list of ciphers to use */
254 char *cipher_list13; /* list of TLS 1.3 cipher suites to use */
255 char *pinned_key;
256 struct curl_blob *cert_blob;
257 struct curl_blob *ca_info_blob;
258 struct curl_blob *issuercert_blob;
259 char *curves; /* list of curves to use */
260 BIT(verifypeer); /* set TRUE if this is desired */
261 BIT(verifyhost); /* set TRUE if CN/SAN must match hostname */
262 BIT(verifystatus); /* set TRUE if certificate status must be checked */
263 BIT(sessionid); /* cache session IDs or not */
264};
265
266struct ssl_config_data {
267 struct ssl_primary_config primary;
268 long certverifyresult; /* result from the certificate verification */
269 char *CRLfile; /* CRL to check certificate revocation */
270 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
271 void *fsslctxp; /* parameter for call back */
272 char *cert_type; /* format for certificate (default: PEM)*/
273 char *key; /* private key file name */
274 struct curl_blob *key_blob;
275 char *key_type; /* format for private key (default: PEM) */
276 char *key_passwd; /* plain text private key password */
277#ifdef USE_TLS_SRP
278 char *username; /* TLS username (for, e.g., SRP) */
279 char *password; /* TLS password (for, e.g., SRP) */
280 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */
281#endif
282 BIT(certinfo); /* gather lots of certificate info */
283 BIT(falsestart);
284 BIT(enable_beast); /* allow this flaw for interoperability's sake*/
285 BIT(no_revoke); /* disable SSL certificate revocation checks */
286 BIT(no_partialchain); /* don't accept partial certificate chains */
287 BIT(revoke_best_effort); /* ignore SSL revocation offline/missing revocation
288 list errors */
289 BIT(native_ca_store); /* use the native ca store of operating system */
290 BIT(auto_client_cert); /* automatically locate and use a client
291 certificate for authentication (Schannel) */
292};
293
294struct ssl_general_config {
295 size_t max_ssl_sessions; /* SSL session id cache size */
296};
297
298/* information stored about one single SSL session */
299struct Curl_ssl_session {
300 char *name; /* host name for which this ID was used */
301 char *conn_to_host; /* host name for the connection (may be NULL) */
302 const char *scheme; /* protocol scheme used */
303 void *sessionid; /* as returned from the SSL layer */
304 size_t idsize; /* if known, otherwise 0 */
305 long age; /* just a number, the higher the more recent */
306 int remote_port; /* remote port */
307 int conn_to_port; /* remote port for the connection (may be -1) */
308 struct ssl_primary_config ssl_config; /* setup for this session */
309};
310
311#ifdef USE_WINDOWS_SSPI
312#include "curl_sspi.h"
313#endif
314
315/* Struct used for Digest challenge-response authentication */
316struct digestdata {
317#if defined(USE_WINDOWS_SSPI)
318 BYTE *input_token;
319 size_t input_token_len;
320 CtxtHandle *http_context;
321 /* copy of user/passwd used to make the identity for http_context.
322 either may be NULL. */
323 char *user;
324 char *passwd;
325#else
326 char *nonce;
327 char *cnonce;
328 char *realm;
329 int algo;
330 char *opaque;
331 char *qop;
332 char *algorithm;
333 int nc; /* nounce count */
334 BIT(stale); /* set true for re-negotiation */
335 BIT(userhash);
336#endif
337};
338
339typedef enum {
340 NTLMSTATE_NONE,
341 NTLMSTATE_TYPE1,
342 NTLMSTATE_TYPE2,
343 NTLMSTATE_TYPE3,
344 NTLMSTATE_LAST
345} curlntlm;
346
347typedef enum {
348 GSS_AUTHNONE,
349 GSS_AUTHRECV,
350 GSS_AUTHSENT,
351 GSS_AUTHDONE,
352 GSS_AUTHSUCC
353} curlnegotiate;
354
355#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
356#include <iconv.h>
357#endif
358
359/* Struct used for GSSAPI (Kerberos V5) authentication */
360#if defined(USE_KERBEROS5)
361struct kerberos5data {
362#if defined(USE_WINDOWS_SSPI)
363 CredHandle *credentials;
364 CtxtHandle *context;
365 TCHAR *spn;
366 SEC_WINNT_AUTH_IDENTITY identity;
367 SEC_WINNT_AUTH_IDENTITY *p_identity;
368 size_t token_max;
369 BYTE *output_token;
370#else
371 gss_ctx_id_t context;
372 gss_name_t spn;
373#endif
374};
375#endif
376
377/* Struct used for SCRAM-SHA-1 authentication */
378#ifdef USE_GSASL
379#include <gsasl.h>
380struct gsasldata {
381 Gsasl *ctx;
382 Gsasl_session *client;
383};
384#endif
385
386/* Struct used for NTLM challenge-response authentication */
387#if defined(USE_NTLM)
388struct ntlmdata {
389#ifdef USE_WINDOWS_SSPI
390/* The sslContext is used for the Schannel bindings. The
391 * api is available on the Windows 7 SDK and later.
392 */
393#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
394 CtxtHandle *sslContext;
395#endif
396 CredHandle *credentials;
397 CtxtHandle *context;
398 SEC_WINNT_AUTH_IDENTITY identity;
399 SEC_WINNT_AUTH_IDENTITY *p_identity;
400 size_t token_max;
401 BYTE *output_token;
402 BYTE *input_token;
403 size_t input_token_len;
404 TCHAR *spn;
405#else
406 unsigned int flags;
407 unsigned char nonce[8];
408 unsigned int target_info_len;
409 void *target_info; /* TargetInfo received in the ntlm type-2 message */
410
411#if defined(NTLM_WB_ENABLED)
412 /* used for communication with Samba's winbind daemon helper ntlm_auth */
413 curl_socket_t ntlm_auth_hlpr_socket;
414 pid_t ntlm_auth_hlpr_pid;
415 char *challenge; /* The received base64 encoded ntlm type-2 message */
416 char *response; /* The generated base64 ntlm type-1/type-3 message */
417#endif
418#endif
419};
420#endif
421
422/* Struct used for Negotiate (SPNEGO) authentication */
423#ifdef USE_SPNEGO
424struct negotiatedata {
425#ifdef HAVE_GSSAPI
426 OM_uint32 status;
427 gss_ctx_id_t context;
428 gss_name_t spn;
429 gss_buffer_desc output_token;
430#else
431#ifdef USE_WINDOWS_SSPI
432#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
433 CtxtHandle *sslContext;
434#endif
435 DWORD status;
436 CredHandle *credentials;
437 CtxtHandle *context;
438 SEC_WINNT_AUTH_IDENTITY identity;
439 SEC_WINNT_AUTH_IDENTITY *p_identity;
440 TCHAR *spn;
441 size_t token_max;
442 BYTE *output_token;
443 size_t output_token_length;
444#endif
445#endif
446 BIT(noauthpersist);
447 BIT(havenoauthpersist);
448 BIT(havenegdata);
449 BIT(havemultiplerequests);
450};
451#endif
452
453
454/*
455 * Boolean values that concerns this connection.
456 */
457struct ConnectBits {
458 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set
459 the first time on the first connect function call */
460#ifndef CURL_DISABLE_PROXY
461 bool proxy_ssl_connected[2]; /* TRUE when SSL initialization for HTTPS proxy
462 is complete */
463 BIT(httpproxy); /* if set, this transfer is done through a http proxy */
464 BIT(socksproxy); /* if set, this transfer is done through a socks proxy */
465 BIT(proxy_user_passwd); /* user+password for the proxy? */
466 BIT(tunnel_proxy); /* if CONNECT is used to "tunnel" through the proxy.
467 This is implicit when SSL-protocols are used through
468 proxies, but can also be enabled explicitly by
469 apps */
470 BIT(proxy_connect_closed); /* TRUE if a proxy disconnected the connection
471 in a CONNECT request with auth, so that
472 libcurl should reconnect and continue. */
473#endif
474 /* always modify bits.close with the connclose() and connkeep() macros! */
475 BIT(close); /* if set, we close the connection after this request */
476 BIT(reuse); /* if set, this is a re-used connection */
477 BIT(altused); /* this is an alt-svc "redirect" */
478 BIT(conn_to_host); /* if set, this connection has a "connect to host"
479 that overrides the host in the URL */
480 BIT(conn_to_port); /* if set, this connection has a "connect to port"
481 that overrides the port in the URL (remote port) */
482 BIT(proxy); /* if set, this transfer is done through a proxy - any type */
483 BIT(user_passwd); /* do we use user+password for this connection? */
484 BIT(ipv6_ip); /* we communicate with a remote site specified with pure IPv6
485 IP address */
486 BIT(ipv6); /* we communicate with a site using an IPv6 address */
487 BIT(do_more); /* this is set TRUE if the ->curl_do_more() function is
488 supposed to be called, after ->curl_do() */
489 BIT(protoconnstart);/* the protocol layer has STARTED its operation after
490 the TCP layer connect */
491 BIT(retry); /* this connection is about to get closed and then
492 re-attempted at another connection. */
493 BIT(authneg); /* TRUE when the auth phase has started, which means
494 that we are creating a request with an auth header,
495 but it is not the final request in the auth
496 negotiation. */
497 BIT(rewindaftersend);/* TRUE when the sending couldn't be stopped even
498 though it will be discarded. When the whole send
499 operation is done, we must call the data rewind
500 callback. */
501#ifndef CURL_DISABLE_FTP
502 BIT(ftp_use_epsv); /* As set with CURLOPT_FTP_USE_EPSV, but if we find out
503 EPSV doesn't work we disable it for the forthcoming
504 requests */
505 BIT(ftp_use_eprt); /* As set with CURLOPT_FTP_USE_EPRT, but if we find out
506 EPRT doesn't work we disable it for the forthcoming
507 requests */
508 BIT(ftp_use_data_ssl); /* Enabled SSL for the data connection */
509 BIT(ftp_use_control_ssl); /* Enabled SSL for the control connection */
510#endif
511#ifndef CURL_DISABLE_NETRC
512 BIT(netrc); /* name+password provided by netrc */
513#endif
514 BIT(bound); /* set true if bind() has already been done on this socket/
515 connection */
516 BIT(multiplex); /* connection is multiplexed */
517 BIT(tcp_fastopen); /* use TCP Fast Open */
518 BIT(tls_enable_npn); /* TLS NPN extension? */
519 BIT(tls_enable_alpn); /* TLS ALPN extension? */
520 BIT(connect_only);
521 BIT(doh);
522#ifdef USE_UNIX_SOCKETS
523 BIT(abstract_unix_socket);
524#endif
525 BIT(tls_upgraded);
526 BIT(sock_accepted); /* TRUE if the SECONDARYSOCKET was created with
527 accept() */
528 BIT(parallel_connect); /* set TRUE when a parallel connect attempt has
529 started (happy eyeballs) */
530};
531
532struct hostname {
533 char *rawalloc; /* allocated "raw" version of the name */
534 char *encalloc; /* allocated IDN-encoded version of the name */
535 char *name; /* name to use internally, might be encoded, might be raw */
536 const char *dispname; /* name to display, as 'name' might be encoded */
537};
538
539/*
540 * Flags on the keepon member of the Curl_transfer_keeper
541 */
542
543#define KEEP_NONE 0
544#define KEEP_RECV (1<<0) /* there is or may be data to read */
545#define KEEP_SEND (1<<1) /* there is or may be data to write */
546#define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there
547 might still be data to read */
548#define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there
549 might still be data to write */
550#define KEEP_RECV_PAUSE (1<<4) /* reading is paused */
551#define KEEP_SEND_PAUSE (1<<5) /* writing is paused */
552
553#define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE)
554#define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE)
555
556#if defined(CURLRES_ASYNCH) || !defined(CURL_DISABLE_DOH)
557#define USE_CURL_ASYNC
558struct Curl_async {
559 char *hostname;
560 struct Curl_dns_entry *dns;
561 struct thread_data *tdata;
562 void *resolver; /* resolver state, if it is used in the URL state -
563 ares_channel f.e. */
564 int port;
565 int status; /* if done is TRUE, this is the status from the callback */
566 BIT(done); /* set TRUE when the lookup is complete */
567};
568
569#endif
570
571#define FIRSTSOCKET 0
572#define SECONDARYSOCKET 1
573
574enum expect100 {
575 EXP100_SEND_DATA, /* enough waiting, just send the body now */
576 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */
577 EXP100_SENDING_REQUEST, /* still sending the request but will wait for
578 the 100 header once done with the request */
579 EXP100_FAILED /* used on 417 Expectation Failed */
580};
581
582enum upgrade101 {
583 UPGR101_INIT, /* default state */
584 UPGR101_REQUESTED, /* upgrade requested */
585 UPGR101_RECEIVED, /* response received */
586 UPGR101_WORKING /* talking upgraded protocol */
587};
588
589enum doh_slots {
590 /* Explicit values for first two symbols so as to match hard-coded
591 * constants in existing code
592 */
593 DOH_PROBE_SLOT_IPADDR_V4 = 0, /* make 'V4' stand out for readability */
594 DOH_PROBE_SLOT_IPADDR_V6 = 1, /* 'V6' likewise */
595
596 /* Space here for (possibly build-specific) additional slot definitions */
597
598 /* for example */
599 /* #ifdef WANT_DOH_FOOBAR_TXT */
600 /* DOH_PROBE_SLOT_FOOBAR_TXT, */
601 /* #endif */
602
603 /* AFTER all slot definitions, establish how many we have */
604 DOH_PROBE_SLOTS
605};
606
607/* one of these for each DoH request */
608struct dnsprobe {
609 CURL *easy;
610 int dnstype;
611 unsigned char dohbuffer[512];
612 size_t dohlen;
613 struct dynbuf serverdoh;
614};
615
616struct dohdata {
617 struct curl_slist *headers;
618 struct dnsprobe probe[DOH_PROBE_SLOTS];
619 unsigned int pending; /* still outstanding requests */
620 int port;
621 const char *host;
622};
623
624/*
625 * Request specific data in the easy handle (Curl_easy). Previously,
626 * these members were on the connectdata struct but since a conn struct may
627 * now be shared between different Curl_easys, we store connection-specific
628 * data here. This struct only keeps stuff that's interesting for *this*
629 * request, as it will be cleared between multiple ones
630 */
631struct SingleRequest {
632 curl_off_t size; /* -1 if unknown at this point */
633 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch,
634 -1 means unlimited */
635 curl_off_t bytecount; /* total number of bytes read */
636 curl_off_t writebytecount; /* number of bytes written */
637
638 curl_off_t headerbytecount; /* only count received headers */
639 curl_off_t deductheadercount; /* this amount of bytes doesn't count when we
640 check if anything has been transferred at
641 the end of a connection. We use this
642 counter to make only a 100 reply (without a
643 following second response code) result in a
644 CURLE_GOT_NOTHING error code */
645
646 curl_off_t pendingheader; /* this many bytes left to send is actually
647 header and not body */
648 struct curltime start; /* transfer started at this time */
649 struct curltime now; /* current time */
650 enum {
651 HEADER_NORMAL, /* no bad header at all */
652 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest
653 is normal data */
654 HEADER_ALLBAD /* all was believed to be header */
655 } badheader; /* the header was deemed bad and will be
656 written as body */
657 int headerline; /* counts header lines to better track the
658 first one */
659 char *str; /* within buf */
660 curl_off_t offset; /* possible resume offset read from the
661 Content-Range: header */
662 int httpcode; /* error code from the 'HTTP/1.? XXX' or
663 'RTSP/1.? XXX' line */
664 int keepon;
665 struct curltime start100; /* time stamp to wait for the 100 code from */
666 enum expect100 exp100; /* expect 100 continue state */
667 enum upgrade101 upgr101; /* 101 upgrade state */
668
669 /* Content unencoding stack. See sec 3.5, RFC2616. */
670 struct contenc_writer *writer_stack;
671 time_t timeofdoc;
672 long bodywrites;
673 char *location; /* This points to an allocated version of the Location:
674 header data */
675 char *newurl; /* Set to the new URL to use when a redirect or a retry is
676 wanted */
677
678 /* 'upload_present' is used to keep a byte counter of how much data there is
679 still left in the buffer, aimed for upload. */
680 ssize_t upload_present;
681
682 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
683 buffer, so the next read should read from where this pointer points to,
684 and the 'upload_present' contains the number of bytes available at this
685 position */
686 char *upload_fromhere;
687
688 /* Allocated protocol-specific data. Each protocol handler makes sure this
689 points to data it needs. */
690 union {
691 struct FILEPROTO *file;
692 struct FTP *ftp;
693 struct HTTP *http;
694 struct IMAP *imap;
695 struct ldapreqinfo *ldap;
696 struct MQTT *mqtt;
697 struct POP3 *pop3;
698 struct RTSP *rtsp;
699 struct smb_request *smb;
700 struct SMTP *smtp;
701 struct SSHPROTO *ssh;
702 struct TELNET *telnet;
703 } p;
704#ifndef CURL_DISABLE_DOH
705 struct dohdata *doh; /* DoH specific data for this request */
706#endif
707 BIT(header); /* incoming data has HTTP header */
708 BIT(content_range); /* set TRUE if Content-Range: was found */
709 BIT(upload_done); /* set to TRUE when doing chunked transfer-encoding
710 upload and we're uploading the last chunk */
711 BIT(ignorebody); /* we read a response-body but we ignore it! */
712 BIT(http_bodyless); /* HTTP response status code is between 100 and 199,
713 204 or 304 */
714 BIT(chunk); /* if set, this is a chunked transfer-encoding */
715 BIT(ignore_cl); /* ignore content-length */
716 BIT(upload_chunky); /* set TRUE if we are doing chunked transfer-encoding
717 on upload */
718 BIT(getheader); /* TRUE if header parsing is wanted */
719 BIT(forbidchunk); /* used only to explicitly forbid chunk-upload for
720 specific upload buffers. See readmoredata() in http.c
721 for details. */
722};
723
724/*
725 * Specific protocol handler.
726 */
727
728struct Curl_handler {
729 const char *scheme; /* URL scheme name. */
730
731 /* Complement to setup_connection_internals(). This is done before the
732 transfer "owns" the connection. */
733 CURLcode (*setup_connection)(struct Curl_easy *data,
734 struct connectdata *conn);
735
736 /* These two functions MUST be set to be protocol dependent */
737 CURLcode (*do_it)(struct Curl_easy *data, bool *done);
738 CURLcode (*done)(struct Curl_easy *, CURLcode, bool);
739
740 /* If the curl_do() function is better made in two halves, this
741 * curl_do_more() function will be called afterwards, if set. For example
742 * for doing the FTP stuff after the PASV/PORT command.
743 */
744 CURLcode (*do_more)(struct Curl_easy *, int *);
745
746 /* This function *MAY* be set to a protocol-dependent function that is run
747 * after the connect() and everything is done, as a step in the connection.
748 * The 'done' pointer points to a bool that should be set to TRUE if the
749 * function completes before return. If it doesn't complete, the caller
750 * should call the curl_connecting() function until it is.
751 */
752 CURLcode (*connect_it)(struct Curl_easy *data, bool *done);
753
754 /* See above. */
755 CURLcode (*connecting)(struct Curl_easy *data, bool *done);
756 CURLcode (*doing)(struct Curl_easy *data, bool *done);
757
758 /* Called from the multi interface during the PROTOCONNECT phase, and it
759 should then return a proper fd set */
760 int (*proto_getsock)(struct Curl_easy *data,
761 struct connectdata *conn, curl_socket_t *socks);
762
763 /* Called from the multi interface during the DOING phase, and it should
764 then return a proper fd set */
765 int (*doing_getsock)(struct Curl_easy *data,
766 struct connectdata *conn, curl_socket_t *socks);
767
768 /* Called from the multi interface during the DO_MORE phase, and it should
769 then return a proper fd set */
770 int (*domore_getsock)(struct Curl_easy *data,
771 struct connectdata *conn, curl_socket_t *socks);
772
773 /* Called from the multi interface during the DO_DONE, PERFORM and
774 WAITPERFORM phases, and it should then return a proper fd set. Not setting
775 this will make libcurl use the generic default one. */
776 int (*perform_getsock)(struct Curl_easy *data,
777 struct connectdata *conn, curl_socket_t *socks);
778
779 /* This function *MAY* be set to a protocol-dependent function that is run
780 * by the curl_disconnect(), as a step in the disconnection. If the handler
781 * is called because the connection has been considered dead,
782 * dead_connection is set to TRUE. The connection is already disassociated
783 * from the transfer here.
784 */
785 CURLcode (*disconnect)(struct Curl_easy *, struct connectdata *,
786 bool dead_connection);
787
788 /* If used, this function gets called from transfer.c:readwrite_data() to
789 allow the protocol to do extra reads/writes */
790 CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn,
791 ssize_t *nread, bool *readmore);
792
793 /* This function can perform various checks on the connection. See
794 CONNCHECK_* for more information about the checks that can be performed,
795 and CONNRESULT_* for the results that can be returned. */
796 unsigned int (*connection_check)(struct Curl_easy *data,
797 struct connectdata *conn,
798 unsigned int checks_to_perform);
799
800 /* attach() attaches this transfer to this connection */
801 void (*attach)(struct Curl_easy *data, struct connectdata *conn);
802
803 int defport; /* Default port. */
804 unsigned int protocol; /* See CURLPROTO_* - this needs to be the single
805 specific protocol bit */
806 unsigned int family; /* single bit for protocol family; basically the
807 non-TLS name of the protocol this is */
808 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */
809
810};
811
812#define PROTOPT_NONE 0 /* nothing extra */
813#define PROTOPT_SSL (1<<0) /* uses SSL */
814#define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */
815#define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */
816/* some protocols will have to call the underlying functions without regard to
817 what exact state the socket signals. IE even if the socket says "readable",
818 the send function might need to be called while uploading, or vice versa.
819*/
820#define PROTOPT_DIRLOCK (1<<3)
821#define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */
822#define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it
823 gets a default */
824#define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle
825 url query strings (?foo=bar) ! */
826#define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per
827 request instead of per connection */
828#define PROTOPT_ALPN_NPN (1<<8) /* set ALPN and/or NPN for this */
829#define PROTOPT_STREAM (1<<9) /* a protocol with individual logical streams */
830#define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field
831 of the URL */
832#define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a
833 HTTP proxy as HTTP proxies may know
834 this protocol and act as a gateway */
835#define PROTOPT_WILDCARD (1<<12) /* protocol supports wildcard matching */
836#define PROTOPT_USERPWDCTRL (1<<13) /* Allow "control bytes" (< 32 ascii) in
837 user name and password */
838
839#define CONNCHECK_NONE 0 /* No checks */
840#define CONNCHECK_ISDEAD (1<<0) /* Check if the connection is dead. */
841#define CONNCHECK_KEEPALIVE (1<<1) /* Perform any keepalive function. */
842
843#define CONNRESULT_NONE 0 /* No extra information. */
844#define CONNRESULT_DEAD (1<<0) /* The connection is dead. */
845
846#ifdef USE_RECV_BEFORE_SEND_WORKAROUND
847struct postponed_data {
848 char *buffer; /* Temporal store for received data during
849 sending, must be freed */
850 size_t allocated_size; /* Size of temporal store */
851 size_t recv_size; /* Size of received data during sending */
852 size_t recv_processed; /* Size of processed part of postponed data */
853#ifdef DEBUGBUILD
854 curl_socket_t bindsock;/* Structure must be bound to specific socket,
855 used only for DEBUGASSERT */
856#endif /* DEBUGBUILD */
857};
858#endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
859
860struct proxy_info {
861 struct hostname host;
862 long port;
863 curl_proxytype proxytype; /* what kind of proxy that is in use */
864 char *user; /* proxy user name string, allocated */
865 char *passwd; /* proxy password string, allocated */
866};
867
868struct ldapconninfo;
869struct http_connect_state;
870
871/* for the (SOCKS) connect state machine */
872enum connect_t {
873 CONNECT_INIT,
874 CONNECT_SOCKS_INIT, /* 1 */
875 CONNECT_SOCKS_SEND, /* 2 waiting to send more first data */
876 CONNECT_SOCKS_READ_INIT, /* 3 set up read */
877 CONNECT_SOCKS_READ, /* 4 read server response */
878 CONNECT_GSSAPI_INIT, /* 5 */
879 CONNECT_AUTH_INIT, /* 6 setup outgoing auth buffer */
880 CONNECT_AUTH_SEND, /* 7 send auth */
881 CONNECT_AUTH_READ, /* 8 read auth response */
882 CONNECT_REQ_INIT, /* 9 init SOCKS "request" */
883 CONNECT_RESOLVING, /* 10 */
884 CONNECT_RESOLVED, /* 11 */
885 CONNECT_RESOLVE_REMOTE, /* 12 */
886 CONNECT_REQ_SEND, /* 13 */
887 CONNECT_REQ_SENDING, /* 14 */
888 CONNECT_REQ_READ, /* 15 */
889 CONNECT_REQ_READ_MORE, /* 16 */
890 CONNECT_DONE /* 17 connected fine to the remote or the SOCKS proxy */
891};
892
893#define SOCKS_STATE(x) (((x) >= CONNECT_SOCKS_INIT) && \
894 ((x) < CONNECT_DONE))
895
896struct connstate {
897 enum connect_t state;
898 ssize_t outstanding; /* send this many bytes more */
899 unsigned char *outp; /* send from this pointer */
900};
901
902/*
903 * The connectdata struct contains all fields and variables that should be
904 * unique for an entire connection.
905 */
906struct connectdata {
907 struct connstate cnnct;
908 struct Curl_llist_element bundle_node; /* conncache */
909
910 /* chunk is for HTTP chunked encoding, but is in the general connectdata
911 struct only because we can do just about any protocol through a HTTP proxy
912 and a HTTP proxy may in fact respond using chunked encoding */
913 struct Curl_chunker chunk;
914
915 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */
916 void *closesocket_client;
917
918 /* This is used by the connection cache logic. If this returns TRUE, this
919 handle is still used by one or more easy handles and can only used by any
920 other easy handle without careful consideration (== only for
921 multiplexing) and it cannot be used by another multi handle! */
922#define CONN_INUSE(c) ((c)->easyq.size)
923
924 /**** Fields set when inited and not modified again */
925 long connection_id; /* Contains a unique number to make it easier to
926 track the connections in the log output */
927
928 /* 'dns_entry' is the particular host we use. This points to an entry in the
929 DNS cache and it will not get pruned while locked. It gets unlocked in
930 multi_done(). This entry will be NULL if the connection is re-used as then
931 there is no name resolve done. */
932 struct Curl_dns_entry *dns_entry;
933
934 /* 'ip_addr' is the particular IP we connected to. It points to a struct
935 within the DNS cache, so this pointer is only valid as long as the DNS
936 cache entry remains locked. It gets unlocked in multi_done() */
937 struct Curl_addrinfo *ip_addr;
938 struct Curl_addrinfo *tempaddr[2]; /* for happy eyeballs */
939
940 unsigned int scope_id; /* Scope id for IPv6 */
941
942 enum {
943 TRNSPRT_TCP = 3,
944 TRNSPRT_UDP = 4,
945 TRNSPRT_QUIC = 5
946 } transport;
947
948#ifdef ENABLE_QUIC
949 struct quicsocket hequic[2]; /* two, for happy eyeballs! */
950 struct quicsocket *quic;
951#endif
952
953 struct hostname host;
954 char *hostname_resolve; /* host name to resolve to address, allocated */
955 char *secondaryhostname; /* secondary socket host name (ftp) */
956 struct hostname conn_to_host; /* the host to connect to. valid only if
957 bits.conn_to_host is set */
958#ifndef CURL_DISABLE_PROXY
959 struct proxy_info socks_proxy;
960 struct proxy_info http_proxy;
961#endif
962 int port; /* which port to use locally - to connect to */
963 int remote_port; /* the remote port, not the proxy port! */
964 int conn_to_port; /* the remote port to connect to. valid only if
965 bits.conn_to_port is set */
966 unsigned short secondary_port; /* secondary socket remote port to connect to
967 (ftp) */
968
969 /* 'primary_ip' and 'primary_port' get filled with peer's numerical
970 ip address and port number whenever an outgoing connection is
971 *attempted* from the primary socket to a remote address. When more
972 than one address is tried for a connection these will hold data
973 for the last attempt. When the connection is actually established
974 these are updated with data which comes directly from the socket. */
975
976 char primary_ip[MAX_IPADR_LEN];
977 unsigned char ip_version; /* copied from the Curl_easy at creation time */
978
979 char *user; /* user name string, allocated */
980 char *passwd; /* password string, allocated */
981 char *options; /* options string, allocated */
982 char *sasl_authzid; /* authorisation identity string, allocated */
983 unsigned char httpversion; /* the HTTP version*10 reported by the server */
984 struct curltime now; /* "current" time */
985 struct curltime created; /* creation time */
986 struct curltime lastused; /* when returned to the connection cache */
987 curl_socket_t sock[2]; /* two sockets, the second is used for the data
988 transfer when doing FTP */
989 curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */
990 int tempfamily[2]; /* family used for the temp sockets */
991 Curl_recv *recv[2];
992 Curl_send *send[2];
993
994#ifdef USE_RECV_BEFORE_SEND_WORKAROUND
995 struct postponed_data postponed[2]; /* two buffers for two sockets */
996#endif /* USE_RECV_BEFORE_SEND_WORKAROUND */
997 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */
998#ifndef CURL_DISABLE_PROXY
999 struct ssl_connect_data proxy_ssl[2]; /* this is for proxy ssl-stuff */
1000#endif
1001#ifdef USE_SSL
1002 void *ssl_extra; /* separately allocated backend-specific data */
1003#endif
1004 struct ssl_primary_config ssl_config;
1005#ifndef CURL_DISABLE_PROXY
1006 struct ssl_primary_config proxy_ssl_config;
1007#endif
1008 struct ConnectBits bits; /* various state-flags for this connection */
1009
1010 /* The field below gets set in Curl_connecthost */
1011 int num_addr; /* number of addresses to try to connect to */
1012 /* connecttime: when connect() is called on the current IP address. Used to
1013 be able to track when to move on to try next IP - but only when the multi
1014 interface is used. */
1015 struct curltime connecttime;
1016
1017 /* The field below gets set in Curl_connecthost */
1018 /* how long time in milliseconds to spend on trying to connect to each IP
1019 address, per family */
1020 timediff_t timeoutms_per_addr[2];
1021
1022 const struct Curl_handler *handler; /* Connection's protocol handler */
1023 const struct Curl_handler *given; /* The protocol first given */
1024
1025 /* Protocols can use a custom keepalive mechanism to keep connections alive.
1026 This allows those protocols to track the last time the keepalive mechanism
1027 was used on this connection. */
1028 struct curltime keepalive;
1029
1030 /**** curl_get() phase fields */
1031
1032 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */
1033 curl_socket_t writesockfd; /* socket to write to, it may very
1034 well be the same we read from.
1035 CURL_SOCKET_BAD disables */
1036
1037#ifdef HAVE_GSSAPI
1038 BIT(sec_complete); /* if Kerberos is enabled for this connection */
1039 enum protection_level command_prot;
1040 enum protection_level data_prot;
1041 enum protection_level request_data_prot;
1042 size_t buffer_size;
1043 struct krb5buffer in_buffer;
1044 void *app_data;
1045 const struct Curl_sec_client_mech *mech;
1046 struct sockaddr_in local_addr;
1047#endif
1048
1049#if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */
1050 struct kerberos5data krb5; /* variables into the structure definition, */
1051#endif /* however, some of them are ftp specific. */
1052
1053 struct Curl_llist easyq; /* List of easy handles using this connection */
1054 curl_seek_callback seek_func; /* function that seeks the input */
1055 void *seek_client; /* pointer to pass to the seek() above */
1056
1057 /*************** Request - specific items ************/
1058#if defined(USE_WINDOWS_SSPI) && defined(SECPKG_ATTR_ENDPOINT_BINDINGS)
1059 CtxtHandle *sslContext;
1060#endif
1061
1062#ifdef USE_GSASL
1063 struct gsasldata gsasl;
1064#endif
1065
1066#if defined(USE_NTLM)
1067 curlntlm http_ntlm_state;
1068 curlntlm proxy_ntlm_state;
1069
1070 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes
1071 because it authenticates connections, not
1072 single requests! */
1073 struct ntlmdata proxyntlm; /* NTLM data for proxy */
1074#endif
1075
1076#ifdef USE_SPNEGO
1077 curlnegotiate http_negotiate_state;
1078 curlnegotiate proxy_negotiate_state;
1079
1080 struct negotiatedata negotiate; /* state data for host Negotiate auth */
1081 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */
1082#endif
1083
1084 /* for chunked-encoded trailer */
1085 struct dynbuf trailer;
1086
1087 union {
1088 struct ftp_conn ftpc;
1089 struct http_conn httpc;
1090 struct ssh_conn sshc;
1091 struct tftp_state_data *tftpc;
1092 struct imap_conn imapc;
1093 struct pop3_conn pop3c;
1094 struct smtp_conn smtpc;
1095 struct rtsp_conn rtspc;
1096 struct smb_conn smbc;
1097 void *rtmp;
1098 struct ldapconninfo *ldapc;
1099 struct mqtt_conn mqtt;
1100 } proto;
1101
1102 struct http_connect_state *connect_state; /* for HTTP CONNECT */
1103 struct connectbundle *bundle; /* The bundle we are member of */
1104#ifdef USE_UNIX_SOCKETS
1105 char *unix_domain_socket;
1106#endif
1107#ifdef USE_HYPER
1108 /* if set, an alternative data transfer function */
1109 Curl_datastream datastream;
1110#endif
1111 /* When this connection is created, store the conditions for the local end
1112 bind. This is stored before the actual bind and before any connection is
1113 made and will serve the purpose of being used for comparison reasons so
1114 that subsequent bound-requested connections aren't accidentally re-using
1115 wrong connections. */
1116 char *localdev;
1117 int localportrange;
1118 int cselect_bits; /* bitmask of socket events */
1119 int waitfor; /* current READ/WRITE bits to wait for */
1120 int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */
1121
1122#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1123 int socks5_gssapi_enctype;
1124#endif
1125 unsigned short localport;
1126};
1127
1128/* The end of connectdata. */
1129
1130/*
1131 * Struct to keep statistical and informational data.
1132 * All variables in this struct must be initialized/reset in Curl_initinfo().
1133 */
1134struct PureInfo {
1135 int httpcode; /* Recent HTTP, FTP, RTSP or SMTP response code */
1136 int httpproxycode; /* response code from proxy when received separate */
1137 int httpversion; /* the http version number X.Y = X*10+Y */
1138 time_t filetime; /* If requested, this is might get set. Set to -1 if the
1139 time was unretrievable. */
1140 curl_off_t header_size; /* size of read header(s) in bytes */
1141 curl_off_t request_size; /* the amount of bytes sent in the request(s) */
1142 unsigned long proxyauthavail; /* what proxy auth types were announced */
1143 unsigned long httpauthavail; /* what host auth types were announced */
1144 long numconnects; /* how many new connection did libcurl created */
1145 char *contenttype; /* the content type of the object */
1146 char *wouldredirect; /* URL this would've been redirected to if asked to */
1147 curl_off_t retry_after; /* info from Retry-After: header */
1148
1149 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip'
1150 and, 'conn_local_port' are copied over from the connectdata struct in
1151 order to allow curl_easy_getinfo() to return this information even when
1152 the session handle is no longer associated with a connection, and also
1153 allow curl_easy_reset() to clear this information from the session handle
1154 without disturbing information which is still alive, and that might be
1155 reused, in the connection cache. */
1156
1157 char conn_primary_ip[MAX_IPADR_LEN];
1158 int conn_primary_port;
1159 char conn_local_ip[MAX_IPADR_LEN];
1160 int conn_local_port;
1161 const char *conn_scheme;
1162 unsigned int conn_protocol;
1163 struct curl_certinfo certs; /* info about the certs, only populated in
1164 OpenSSL, GnuTLS, Schannel, NSS and GSKit
1165 builds. Asked for with CURLOPT_CERTINFO
1166 / CURLINFO_CERTINFO */
1167 CURLproxycode pxcode;
1168 BIT(timecond); /* set to TRUE if the time condition didn't match, which
1169 thus made the document NOT get fetched */
1170};
1171
1172
1173struct Progress {
1174 time_t lastshow; /* time() of the last displayed progress meter or NULL to
1175 force redraw at next call */
1176 curl_off_t size_dl; /* total expected size */
1177 curl_off_t size_ul; /* total expected size */
1178 curl_off_t downloaded; /* transferred so far */
1179 curl_off_t uploaded; /* transferred so far */
1180
1181 curl_off_t current_speed; /* uses the currently fastest transfer */
1182
1183 int width; /* screen width at download start */
1184 int flags; /* see progress.h */
1185
1186 timediff_t timespent;
1187
1188 curl_off_t dlspeed;
1189 curl_off_t ulspeed;
1190
1191 timediff_t t_nslookup;
1192 timediff_t t_connect;
1193 timediff_t t_appconnect;
1194 timediff_t t_pretransfer;
1195 timediff_t t_starttransfer;
1196 timediff_t t_redirect;
1197
1198 struct curltime start;
1199 struct curltime t_startsingle;
1200 struct curltime t_startop;
1201 struct curltime t_acceptdata;
1202
1203
1204 /* upload speed limit */
1205 struct curltime ul_limit_start;
1206 curl_off_t ul_limit_size;
1207 /* download speed limit */
1208 struct curltime dl_limit_start;
1209 curl_off_t dl_limit_size;
1210
1211#define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */
1212
1213 curl_off_t speeder[ CURR_TIME ];
1214 struct curltime speeder_time[ CURR_TIME ];
1215 int speeder_c;
1216 BIT(callback); /* set when progress callback is used */
1217 BIT(is_t_startransfer_set);
1218};
1219
1220typedef enum {
1221 RTSPREQ_NONE, /* first in list */
1222 RTSPREQ_OPTIONS,
1223 RTSPREQ_DESCRIBE,
1224 RTSPREQ_ANNOUNCE,
1225 RTSPREQ_SETUP,
1226 RTSPREQ_PLAY,
1227 RTSPREQ_PAUSE,
1228 RTSPREQ_TEARDOWN,
1229 RTSPREQ_GET_PARAMETER,
1230 RTSPREQ_SET_PARAMETER,
1231 RTSPREQ_RECORD,
1232 RTSPREQ_RECEIVE,
1233 RTSPREQ_LAST /* last in list */
1234} Curl_RtspReq;
1235
1236struct auth {
1237 unsigned long want; /* Bitmask set to the authentication methods wanted by
1238 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */
1239 unsigned long picked;
1240 unsigned long avail; /* Bitmask for what the server reports to support for
1241 this resource */
1242 BIT(done); /* TRUE when the auth phase is done and ready to do the
1243 actual request */
1244 BIT(multipass); /* TRUE if this is not yet authenticated but within the
1245 auth multipass negotiation */
1246 BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it
1247 should be RFC compliant */
1248};
1249
1250struct Curl_http2_dep {
1251 struct Curl_http2_dep *next;
1252 struct Curl_easy *data;
1253};
1254
1255/*
1256 * This struct is for holding data that was attempted to get sent to the user's
1257 * callback but is held due to pausing. One instance per type (BOTH, HEADER,
1258 * BODY).
1259 */
1260struct tempbuf {
1261 struct dynbuf b;
1262 int type; /* type of the 'tempwrite' buffer as a bitmask that is used with
1263 Curl_client_write() */
1264};
1265
1266/* Timers */
1267typedef enum {
1268 EXPIRE_100_TIMEOUT,
1269 EXPIRE_ASYNC_NAME,
1270 EXPIRE_CONNECTTIMEOUT,
1271 EXPIRE_DNS_PER_NAME, /* family1 */
1272 EXPIRE_DNS_PER_NAME2, /* family2 */
1273 EXPIRE_HAPPY_EYEBALLS_DNS, /* See asyn-ares.c */
1274 EXPIRE_HAPPY_EYEBALLS,
1275 EXPIRE_MULTI_PENDING,
1276 EXPIRE_RUN_NOW,
1277 EXPIRE_SPEEDCHECK,
1278 EXPIRE_TIMEOUT,
1279 EXPIRE_TOOFAST,
1280 EXPIRE_QUIC,
1281 EXPIRE_LAST /* not an actual timer, used as a marker only */
1282} expire_id;
1283
1284
1285typedef enum {
1286 TRAILERS_NONE,
1287 TRAILERS_INITIALIZED,
1288 TRAILERS_SENDING,
1289 TRAILERS_DONE
1290} trailers_state;
1291
1292
1293/*
1294 * One instance for each timeout an easy handle can set.
1295 */
1296struct time_node {
1297 struct Curl_llist_element list;
1298 struct curltime time;
1299 expire_id eid;
1300};
1301
1302/* individual pieces of the URL */
1303struct urlpieces {
1304 char *scheme;
1305 char *hostname;
1306 char *port;
1307 char *user;
1308 char *password;
1309 char *options;
1310 char *path;
1311 char *query;
1312};
1313
1314struct UrlState {
1315 /* Points to the connection cache */
1316 struct conncache *conn_cache;
1317 /* buffers to store authentication data in, as parsed from input options */
1318 struct curltime keeps_speed; /* for the progress meter really */
1319
1320 long lastconnect_id; /* The last connection, -1 if undefined */
1321 struct dynbuf headerb; /* buffer to store headers in */
1322
1323 char *buffer; /* download buffer */
1324 char *ulbuf; /* allocated upload buffer or NULL */
1325 curl_off_t current_speed; /* the ProgressShow() function sets this,
1326 bytes / second */
1327 char *first_host; /* host name of the first (not followed) request.
1328 if set, this should be the host name that we will
1329 sent authorization to, no else. Used to make Location:
1330 following not keep sending user+password... This is
1331 strdup() data.
1332 */
1333 int retrycount; /* number of retries on a new connection */
1334 int first_remote_port; /* remote port of the first (not followed) request */
1335 struct Curl_ssl_session *session; /* array of 'max_ssl_sessions' size */
1336 long sessionage; /* number of the most recent session */
1337 struct tempbuf tempwrite[3]; /* BOTH, HEADER, BODY */
1338 unsigned int tempcount; /* number of entries in use in tempwrite, 0 - 3 */
1339 int os_errno; /* filled in with errno whenever an error occurs */
1340 char *scratch; /* huge buffer[set.buffer_size*2] for upload CRLF replacing */
1341 long followlocation; /* redirect counter */
1342#ifdef HAVE_SIGNAL
1343 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
1344 void (*prev_signal)(int sig);
1345#endif
1346 struct digestdata digest; /* state data for host Digest auth */
1347 struct digestdata proxydigest; /* state data for proxy Digest auth */
1348
1349 struct auth authhost; /* auth details for host */
1350 struct auth authproxy; /* auth details for proxy */
1351#ifdef USE_CURL_ASYNC
1352 struct Curl_async async; /* asynchronous name resolver data */
1353#endif
1354
1355#if defined(USE_OPENSSL)
1356 /* void instead of ENGINE to avoid bleeding OpenSSL into this header */
1357 void *engine;
1358#endif /* USE_OPENSSL */
1359 struct curltime expiretime; /* set this with Curl_expire() only */
1360 struct Curl_tree timenode; /* for the splay stuff */
1361 struct Curl_llist timeoutlist; /* list of pending timeouts */
1362 struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */
1363
1364 /* a place to store the most recently set FTP entrypath */
1365 char *most_recent_ftp_entrypath;
1366 unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1367 to be used in the library's request(s) */
1368 unsigned char httpversion; /* the lowest HTTP version*10 reported by any
1369 server involved in this request */
1370
1371#if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__)
1372/* do FTP line-end conversions on most platforms */
1373#define CURL_DO_LINEEND_CONV
1374 /* for FTP downloads: track CRLF sequences that span blocks */
1375 BIT(prev_block_had_trailing_cr);
1376 /* for FTP downloads: how many CRLFs did we converted to LFs? */
1377 curl_off_t crlf_conversions;
1378#endif
1379 char *range; /* range, if used. See README for detailed specification on
1380 this syntax. */
1381 curl_off_t resume_from; /* continue [ftp] transfer from here */
1382
1383 /* This RTSP state information survives requests and connections */
1384 long rtsp_next_client_CSeq; /* the session's next client CSeq */
1385 long rtsp_next_server_CSeq; /* the session's next server CSeq */
1386 long rtsp_CSeq_recv; /* most recent CSeq received */
1387
1388 curl_off_t infilesize; /* size of file to upload, -1 means unknown.
1389 Copied from set.filesize at start of operation */
1390
1391 size_t drain; /* Increased when this stream has data to read, even if its
1392 socket is not necessarily is readable. Decreased when
1393 checked. */
1394
1395 curl_read_callback fread_func; /* read callback/function */
1396 void *in; /* CURLOPT_READDATA */
1397
1398 struct Curl_easy *stream_depends_on;
1399 int stream_weight;
1400 CURLU *uh; /* URL handle for the current parsed URL */
1401 struct urlpieces up;
1402 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
1403 char *url; /* work URL, copied from UserDefined */
1404 char *referer; /* referer string */
1405 struct curl_slist *cookielist; /* list of cookie files set by
1406 curl_easy_setopt(COOKIEFILE) calls */
1407 struct curl_slist *resolve; /* set to point to the set.resolve list when
1408 this should be dealt with in pretransfer */
1409#ifndef CURL_DISABLE_HTTP
1410 size_t trailers_bytes_sent;
1411 struct dynbuf trailers_buf; /* a buffer containing the compiled trailing
1412 headers */
1413#endif
1414 trailers_state trailers_state; /* whether we are sending trailers
1415 and what stage are we at */
1416#ifdef USE_HYPER
1417 bool hconnect; /* set if a CONNECT request */
1418 CURLcode hresult; /* used to pass return codes back from hyper callbacks */
1419#endif
1420
1421 /* Dynamically allocated strings, MUST be freed before this struct is
1422 killed. */
1423 struct dynamically_allocated_data {
1424 char *proxyuserpwd;
1425 char *uagent;
1426 char *accept_encoding;
1427 char *userpwd;
1428 char *rangeline;
1429 char *ref;
1430 char *host;
1431 char *cookiehost;
1432 char *rtsp_transport;
1433 char *te; /* TE: request header */
1434
1435 /* transfer credentials */
1436 char *user;
1437 char *passwd;
1438 char *proxyuser;
1439 char *proxypasswd;
1440 } aptr;
1441
1442#ifdef CURLDEBUG
1443 BIT(conncache_lock);
1444#endif
1445 /* when curl_easy_perform() is called, the multi handle is "owned" by
1446 the easy handle so curl_easy_cleanup() on such an easy handle will
1447 also close the multi handle! */
1448 BIT(multi_owned_by_easy);
1449
1450 BIT(this_is_a_follow); /* this is a followed Location: request */
1451 BIT(refused_stream); /* this was refused, try again */
1452 BIT(errorbuf); /* Set to TRUE if the error buffer is already filled in.
1453 This must be set to FALSE every time _easy_perform() is
1454 called. */
1455 BIT(allow_port); /* Is set.use_port allowed to take effect or not. This
1456 is always set TRUE when curl_easy_perform() is called. */
1457 BIT(authproblem); /* TRUE if there's some problem authenticating */
1458 /* set after initial USER failure, to prevent an authentication loop */
1459 BIT(ftp_trying_alternative);
1460 BIT(wildcardmatch); /* enable wildcard matching */
1461 BIT(expect100header); /* TRUE if we added Expect: 100-continue */
1462 BIT(disableexpect); /* TRUE if Expect: is disabled due to a previous
1463 417 response */
1464 BIT(use_range);
1465 BIT(rangestringalloc); /* the range string is malloc()'ed */
1466 BIT(done); /* set to FALSE when Curl_init_do() is called and set to TRUE
1467 when multi_done() is called, to prevent multi_done() to get
1468 invoked twice when the multi interface is used. */
1469 BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1470 BIT(previouslypending); /* this transfer WAS in the multi->pending queue */
1471 BIT(cookie_engine);
1472 BIT(prefer_ascii); /* ASCII rather than binary */
1473 BIT(list_only); /* list directory contents */
1474 BIT(url_alloc); /* URL string is malloc()'ed */
1475 BIT(referer_alloc); /* referer string is malloc()ed */
1476 BIT(wildcard_resolve); /* Set to true if any resolve change is a wildcard */
1477};
1478
1479/*
1480 * This 'UserDefined' struct must only contain data that is set once to go
1481 * for many (perhaps) independent connections. Values that are generated or
1482 * calculated internally for the "session handle" MUST be defined within the
1483 * 'struct UrlState' instead. The only exceptions MUST note the changes in
1484 * the 'DynamicStatic' struct.
1485 * Character pointer fields point to dynamic storage, unless otherwise stated.
1486 */
1487
1488struct Curl_multi; /* declared and used only in multi.c */
1489
1490/*
1491 * This enumeration MUST not use conditional directives (#ifdefs), new
1492 * null terminated strings MUST be added to the enumeration immediately
1493 * before STRING_LASTZEROTERMINATED, binary fields immediately before
1494 * STRING_LAST. When doing so, ensure that the packages/OS400/chkstring.c
1495 * test is updated and applicable changes for EBCDIC to ASCII conversion
1496 * are catered for in curl_easy_setopt_ccsid()
1497 */
1498enum dupstring {
1499 STRING_CERT, /* client certificate file name */
1500 STRING_CERT_PROXY, /* client certificate file name */
1501 STRING_CERT_TYPE, /* format for certificate (default: PEM)*/
1502 STRING_CERT_TYPE_PROXY, /* format for certificate (default: PEM)*/
1503 STRING_COOKIE, /* HTTP cookie string to send */
1504 STRING_COOKIEJAR, /* dump all cookies to this file */
1505 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */
1506 STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL doesn't specify */
1507 STRING_DEVICE, /* local network interface/address to use */
1508 STRING_ENCODING, /* Accept-Encoding string */
1509 STRING_FTP_ACCOUNT, /* ftp account data */
1510 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */
1511 STRING_FTPPORT, /* port to send with the FTP PORT command */
1512 STRING_KEY, /* private key file name */
1513 STRING_KEY_PROXY, /* private key file name */
1514 STRING_KEY_PASSWD, /* plain text private key password */
1515 STRING_KEY_PASSWD_PROXY, /* plain text private key password */
1516 STRING_KEY_TYPE, /* format for private key (default: PEM) */
1517 STRING_KEY_TYPE_PROXY, /* format for private key (default: PEM) */
1518 STRING_KRB_LEVEL, /* krb security level */
1519 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find
1520 $HOME/.netrc */
1521 STRING_PROXY, /* proxy to use */
1522 STRING_PRE_PROXY, /* pre socks proxy to use */
1523 STRING_SET_RANGE, /* range, if used */
1524 STRING_SET_REFERER, /* custom string for the HTTP referer field */
1525 STRING_SET_URL, /* what original URL to work on */
1526 STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */
1527 STRING_SSL_CAPATH_PROXY, /* CA directory name (doesn't work on windows) */
1528 STRING_SSL_CAFILE, /* certificate file to verify peer against */
1529 STRING_SSL_CAFILE_PROXY, /* certificate file to verify peer against */
1530 STRING_SSL_PINNEDPUBLICKEY, /* public key file to verify peer against */
1531 STRING_SSL_PINNEDPUBLICKEY_PROXY, /* public key file to verify proxy */
1532 STRING_SSL_CIPHER_LIST, /* list of ciphers to use */
1533 STRING_SSL_CIPHER_LIST_PROXY, /* list of ciphers to use */
1534 STRING_SSL_CIPHER13_LIST, /* list of TLS 1.3 ciphers to use */
1535 STRING_SSL_CIPHER13_LIST_PROXY, /* list of TLS 1.3 ciphers to use */
1536 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */
1537 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */
1538 STRING_USERAGENT, /* User-Agent string */
1539 STRING_SSL_CRLFILE, /* crl file to check certificate */
1540 STRING_SSL_CRLFILE_PROXY, /* crl file to check certificate */
1541 STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */
1542 STRING_SSL_ISSUERCERT_PROXY, /* issuer cert file to check certificate */
1543 STRING_SSL_ENGINE, /* name of ssl engine */
1544 STRING_USERNAME, /* <username>, if used */
1545 STRING_PASSWORD, /* <password>, if used */
1546 STRING_OPTIONS, /* <options>, if used */
1547 STRING_PROXYUSERNAME, /* Proxy <username>, if used */
1548 STRING_PROXYPASSWORD, /* Proxy <password>, if used */
1549 STRING_NOPROXY, /* List of hosts which should not use the proxy, if
1550 used */
1551 STRING_RTSP_SESSION_ID, /* Session ID to use */
1552 STRING_RTSP_STREAM_URI, /* Stream URI for this request */
1553 STRING_RTSP_TRANSPORT, /* Transport for this session */
1554 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */
1555 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */
1556 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */
1557 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */
1558 STRING_PROXY_SERVICE_NAME, /* Proxy service name */
1559 STRING_SERVICE_NAME, /* Service name */
1560 STRING_MAIL_FROM,
1561 STRING_MAIL_AUTH,
1562 STRING_TLSAUTH_USERNAME, /* TLS auth <username> */
1563 STRING_TLSAUTH_USERNAME_PROXY, /* TLS auth <username> */
1564 STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */
1565 STRING_TLSAUTH_PASSWORD_PROXY, /* TLS auth <password> */
1566 STRING_BEARER, /* <bearer>, if used */
1567 STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */
1568 STRING_TARGET, /* CURLOPT_REQUEST_TARGET */
1569 STRING_DOH, /* CURLOPT_DOH_URL */
1570 STRING_ALTSVC, /* CURLOPT_ALTSVC */
1571 STRING_HSTS, /* CURLOPT_HSTS */
1572 STRING_SASL_AUTHZID, /* CURLOPT_SASL_AUTHZID */
1573 STRING_DNS_SERVERS,
1574 STRING_DNS_INTERFACE,
1575 STRING_DNS_LOCAL_IP4,
1576 STRING_DNS_LOCAL_IP6,
1577 STRING_SSL_EC_CURVES,
1578
1579 /* -- end of null-terminated strings -- */
1580
1581 STRING_LASTZEROTERMINATED,
1582
1583 /* -- below this are pointers to binary data that cannot be strdup'ed. --- */
1584
1585 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */
1586
1587 STRING_AWS_SIGV4, /* Parameters for V4 signature */
1588
1589 STRING_LAST /* not used, just an end-of-list marker */
1590};
1591
1592enum dupblob {
1593 BLOB_CERT,
1594 BLOB_CERT_PROXY,
1595 BLOB_KEY,
1596 BLOB_KEY_PROXY,
1597 BLOB_SSL_ISSUERCERT,
1598 BLOB_SSL_ISSUERCERT_PROXY,
1599 BLOB_CAINFO,
1600 BLOB_CAINFO_PROXY,
1601 BLOB_LAST
1602};
1603
1604/* callback that gets called when this easy handle is completed within a multi
1605 handle. Only used for internally created transfers, like for example
1606 DoH. */
1607typedef int (*multidone_func)(struct Curl_easy *easy, CURLcode result);
1608
1609struct UserDefined {
1610 FILE *err; /* the stderr user data goes here */
1611 void *debugdata; /* the data that will be passed to fdebug */
1612 char *errorbuffer; /* (Static) store failure messages in here */
1613 long proxyport; /* If non-zero, use this port number by default. If the
1614 proxy string features a ":[port]" that one will override
1615 this. */
1616 void *out; /* CURLOPT_WRITEDATA */
1617 void *in_set; /* CURLOPT_READDATA */
1618 void *writeheader; /* write the header to this if non-NULL */
1619 void *rtp_out; /* write RTP to this if non-NULL */
1620 long use_port; /* which port to use (when not using default) */
1621 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */
1622 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
1623 unsigned long socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
1624 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1
1625 for infinity */
1626
1627 int keep_post; /* keep POSTs as POSTs after a 30x request; each
1628 bit represents a request, from 301 to 303 */
1629 void *postfields; /* if POST, set the fields' values here */
1630 curl_seek_callback seek_func; /* function that seeks the input */
1631 curl_off_t postfieldsize; /* if POST, this might have a size to use instead
1632 of strlen(), and then the data *may* be binary
1633 (contain zero bytes) */
1634 unsigned short localport; /* local port number to bind to */
1635 int localportrange; /* number of additional port numbers to test in case the
1636 'localport' one can't be bind()ed */
1637 curl_write_callback fwrite_func; /* function that stores the output */
1638 curl_write_callback fwrite_header; /* function that stores headers */
1639 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */
1640 curl_read_callback fread_func_set; /* function that reads the input */
1641 curl_progress_callback fprogress; /* OLD and deprecated progress callback */
1642 curl_xferinfo_callback fxferinfo; /* progress callback */
1643 curl_debug_callback fdebug; /* function that write informational data */
1644 curl_ioctl_callback ioctl_func; /* function for I/O control */
1645 curl_sockopt_callback fsockopt; /* function for setting socket options */
1646 void *sockopt_client; /* pointer to pass to the socket options callback */
1647 curl_opensocket_callback fopensocket; /* function for checking/translating
1648 the address and opening the
1649 socket */
1650 void *opensocket_client;
1651 curl_closesocket_callback fclosesocket; /* function for closing the
1652 socket */
1653 void *closesocket_client;
1654
1655 void *seek_client; /* pointer to pass to the seek callback */
1656 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */
1657 /* function to convert from the network encoding: */
1658 curl_conv_callback convfromnetwork;
1659 /* function to convert to the network encoding: */
1660 curl_conv_callback convtonetwork;
1661 /* function to convert from UTF-8 encoding: */
1662 curl_conv_callback convfromutf8;
1663#ifndef CURL_DISABLE_HSTS
1664 curl_hstsread_callback hsts_read;
1665 void *hsts_read_userp;
1666 curl_hstswrite_callback hsts_write;
1667 void *hsts_write_userp;
1668#endif
1669 void *progress_client; /* pointer to pass to the progress callback */
1670 void *ioctl_client; /* pointer to pass to the ioctl callback */
1671 long timeout; /* in milliseconds, 0 means no timeout */
1672 long connecttimeout; /* in milliseconds, 0 means no timeout */
1673 long accepttimeout; /* in milliseconds, 0 means no timeout */
1674 long happy_eyeballs_timeout; /* in milliseconds, 0 is a valid value */
1675 long server_response_timeout; /* in milliseconds, 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 tftp_blksize; /* in bytes, 0 means use default */
1679 curl_off_t filesize; /* size of file to upload, -1 means unknown */
1680 long low_speed_limit; /* bytes/second */
1681 long low_speed_time; /* number of seconds */
1682 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
1683 curl_off_t max_recv_speed; /* high speed limit in bytes/second for
1684 download */
1685 curl_off_t set_resume_from; /* continue [ftp] transfer from here */
1686 struct curl_slist *headers; /* linked list of extra headers */
1687 struct curl_slist *proxyheaders; /* linked list of extra CONNECT headers */
1688 struct curl_httppost *httppost; /* linked list of old POST data */
1689 curl_mimepart mimepost; /* MIME/POST data. */
1690 struct curl_slist *quote; /* after connection is established */
1691 struct curl_slist *postquote; /* after the transfer */
1692 struct curl_slist *prequote; /* before the transfer, after type */
1693 struct curl_slist *source_quote; /* 3rd party quote */
1694 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before
1695 the transfer on source host */
1696 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after
1697 the transfer on source host */
1698 struct curl_slist *telnet_options; /* linked list of telnet options */
1699 struct curl_slist *resolve; /* list of names to add/remove from
1700 DNS cache */
1701 struct curl_slist *connect_to; /* list of host:port mappings to override
1702 the hostname and port to connect to */
1703 curl_TimeCond timecondition; /* kind of time/date comparison */
1704 curl_proxytype proxytype; /* what kind of proxy that is in use */
1705 time_t timevalue; /* what time to compare with */
1706 Curl_HttpReq method; /* what kind of HTTP request (if any) is this */
1707 unsigned char httpwant; /* when non-zero, a specific HTTP version requested
1708 to be used in the library's request(s) */
1709 struct ssl_config_data ssl; /* user defined SSL stuff */
1710#ifndef CURL_DISABLE_PROXY
1711 struct ssl_config_data proxy_ssl; /* user defined SSL stuff for proxy */
1712#endif
1713 struct ssl_general_config general_ssl; /* general user defined SSL stuff */
1714 long dns_cache_timeout; /* DNS cache timeout */
1715 long buffer_size; /* size of receive buffer to use */
1716 unsigned int upload_buffer_size; /* size of upload buffer to use,
1717 keep it >= CURL_MAX_WRITE_SIZE */
1718 void *private_data; /* application-private data */
1719 struct curl_slist *http200aliases; /* linked list of aliases for http200 */
1720 unsigned char ipver; /* the CURL_IPRESOLVE_* defines in the public header
1721 file 0 - whatever, 1 - v2, 2 - v6 */
1722 curl_off_t max_filesize; /* Maximum file size to download */
1723#ifndef CURL_DISABLE_FTP
1724 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */
1725 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */
1726 curl_ftpccc ftp_ccc; /* FTP CCC options */
1727#endif
1728 int ftp_create_missing_dirs; /* 1 - create directories that don't exist
1729 2 - the same but also allow MKD to fail once
1730 */
1731 curl_sshkeycallback ssh_keyfunc; /* key matching callback */
1732 void *ssh_keyfunc_userp; /* custom pointer to callback */
1733#ifndef CURL_DISABLE_NETRC
1734 enum CURL_NETRC_OPTION
1735 use_netrc; /* defined in include/curl.h */
1736#endif
1737 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or
1738 IMAP or POP3 or others! */
1739 long new_file_perms; /* Permissions to use when creating remote files */
1740 long new_directory_perms; /* Permissions to use when creating remote dirs */
1741 long ssh_auth_types; /* allowed SSH auth types */
1742 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */
1743 struct curl_blob *blobs[BLOB_LAST];
1744 unsigned int scope_id; /* Scope id for IPv6 */
1745 long allowed_protocols;
1746 long redir_protocols;
1747 struct curl_slist *mail_rcpt; /* linked list of mail recipients */
1748 /* Common RTSP header options */
1749 Curl_RtspReq rtspreq; /* RTSP request type */
1750 long rtspversion; /* like httpversion, for RTSP */
1751 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer
1752 starts */
1753 curl_chunk_end_callback chunk_end; /* called after part transferring
1754 stopped */
1755 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds
1756 to pattern (e.g. if WILDCARDMATCH is on) */
1757 void *fnmatch_data;
1758
1759 long gssapi_delegation; /* GSS-API credential delegation, see the
1760 documentation of CURLOPT_GSSAPI_DELEGATION */
1761
1762 long tcp_keepidle; /* seconds in idle before sending keepalive probe */
1763 long tcp_keepintvl; /* seconds between TCP keepalive probes */
1764
1765 size_t maxconnects; /* Max idle connections in the connection cache */
1766
1767 long expect_100_timeout; /* in milliseconds */
1768 struct Curl_easy *stream_depends_on;
1769 int stream_weight;
1770 struct Curl_http2_dep *stream_dependents;
1771
1772 curl_resolver_start_callback resolver_start; /* optional callback called
1773 before resolver start */
1774 void *resolver_start_client; /* pointer to pass to resolver start callback */
1775 long upkeep_interval_ms; /* Time between calls for connection upkeep. */
1776 multidone_func fmultidone;
1777 struct Curl_easy *dohfor; /* this is a DoH request for that transfer */
1778 CURLU *uh; /* URL handle for the current parsed URL */
1779 void *trailer_data; /* pointer to pass to trailer data callback */
1780 curl_trailer_callback trailer_callback; /* trailing data callback */
1781 BIT(is_fread_set); /* has read callback been set to non-NULL? */
1782 BIT(is_fwrite_set); /* has write callback been set to non-NULL? */
1783 BIT(free_referer); /* set TRUE if 'referer' points to a string we
1784 allocated */
1785 BIT(tftp_no_options); /* do not send TFTP options requests */
1786 BIT(sep_headers); /* handle host and proxy headers separately */
1787 BIT(cookiesession); /* new cookie session? */
1788 BIT(crlf); /* convert crlf on ftp upload(?) */
1789 BIT(strip_path_slash); /* strip off initial slash from path */
1790 BIT(ssh_compression); /* enable SSH compression */
1791
1792/* Here follows boolean settings that define how to behave during
1793 this session. They are STATIC, set by libcurl users or at least initially
1794 and they don't change during operations. */
1795 BIT(get_filetime); /* get the time and get of the remote file */
1796 BIT(tunnel_thru_httpproxy); /* use CONNECT through a HTTP proxy */
1797 BIT(prefer_ascii); /* ASCII rather than binary */
1798 BIT(remote_append); /* append, not overwrite, on upload */
1799 BIT(list_only); /* list directory */
1800#ifndef CURL_DISABLE_FTP
1801 BIT(ftp_use_port); /* use the FTP PORT command */
1802 BIT(ftp_use_epsv); /* if EPSV is to be attempted or not */
1803 BIT(ftp_use_eprt); /* if EPRT is to be attempted or not */
1804 BIT(ftp_use_pret); /* if PRET is to be used before PASV or not */
1805 BIT(ftp_skip_ip); /* skip the IP address the FTP server passes on to
1806 us */
1807#endif
1808 BIT(hide_progress); /* don't use the progress meter */
1809 BIT(http_fail_on_error); /* fail on HTTP error codes >= 400 */
1810 BIT(http_keep_sending_on_error); /* for HTTP status codes >= 300 */
1811 BIT(http_follow_location); /* follow HTTP redirects */
1812 BIT(http_transfer_encoding); /* request compressed HTTP transfer-encoding */
1813 BIT(allow_auth_to_other_hosts);
1814 BIT(include_header); /* include received protocol headers in data output */
1815 BIT(http_set_referer); /* is a custom referer used */
1816 BIT(http_auto_referer); /* set "correct" referer when following
1817 location: */
1818 BIT(opt_no_body); /* as set with CURLOPT_NOBODY */
1819 BIT(upload); /* upload request */
1820 BIT(verbose); /* output verbosity */
1821 BIT(krb); /* Kerberos connection requested */
1822 BIT(reuse_forbid); /* forbidden to be reused, close after use */
1823 BIT(reuse_fresh); /* do not re-use 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(connect_only); /* make connection, let application use the socket */
1828 BIT(http_te_skip); /* pass the raw body data to the user, even when
1829 transfer-encoded (chunked, compressed) */
1830 BIT(http_ce_skip); /* pass the raw body data to the user, even when
1831 content-encoded (chunked, compressed) */
1832 BIT(proxy_transfer_mode); /* set transfer mode (;type=<a|i>) when doing
1833 FTP via an HTTP proxy */
1834#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1835 BIT(socks5_gssapi_nec); /* Flag to support NEC SOCKS5 server */
1836#endif
1837 BIT(sasl_ir); /* Enable/disable SASL initial response */
1838 BIT(wildcard_enabled); /* enable wildcard matching */
1839 BIT(tcp_keepalive); /* use TCP keepalives */
1840 BIT(tcp_fastopen); /* use TCP Fast Open */
1841 BIT(ssl_enable_npn); /* TLS NPN extension? */
1842 BIT(ssl_enable_alpn);/* TLS ALPN extension? */
1843 BIT(path_as_is); /* allow dotdots? */
1844 BIT(pipewait); /* wait for multiplex status before starting a new
1845 connection */
1846 BIT(suppress_connect_headers); /* suppress proxy CONNECT response headers
1847 from user callbacks */
1848 BIT(dns_shuffle_addresses); /* whether to shuffle addresses before use */
1849 BIT(stream_depends_e); /* set or don't set the Exclusive bit */
1850 BIT(haproxyprotocol); /* whether to send HAProxy PROXY protocol v1
1851 header */
1852 BIT(abstract_unix_socket);
1853 BIT(disallow_username_in_url); /* disallow username in url */
1854 BIT(doh); /* DNS-over-HTTPS enabled */
1855 BIT(doh_get); /* use GET for DoH requests, instead of POST */
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 BIT(http09_allowed); /* allow HTTP/0.9 responses */
1860 BIT(mail_rcpt_allowfails); /* allow RCPT TO command to fail for some
1861 recipients */
1862};
1863
1864struct Names {
1865 struct Curl_hash *hostcache;
1866 enum {
1867 HCACHE_NONE, /* not pointing to anything */
1868 HCACHE_MULTI, /* points to a shared one in the multi handle */
1869 HCACHE_SHARED /* points to a shared one in a shared object */
1870 } hostcachetype;
1871};
1872
1873/*
1874 * The 'connectdata' struct MUST have all the connection oriented stuff as we
1875 * may have several simultaneous connections and connection structs in memory.
1876 *
1877 * The 'struct UserDefined' must only contain data that is set once to go for
1878 * many (perhaps) independent connections. Values that are generated or
1879 * calculated internally for the "session handle" must be defined within the
1880 * 'struct UrlState' instead.
1881 */
1882
1883struct Curl_easy {
1884 /* First a simple identifier to easier detect if a user mix up this easy
1885 handle with a multi handle. Set this to CURLEASY_MAGIC_NUMBER */
1886 unsigned int magic;
1887
1888 /* first, two fields for the linked list of these */
1889 struct Curl_easy *next;
1890 struct Curl_easy *prev;
1891
1892 struct connectdata *conn;
1893 struct Curl_llist_element connect_queue;
1894 struct Curl_llist_element conn_queue; /* list per connectdata */
1895
1896 CURLMstate mstate; /* the handle's state */
1897 CURLcode result; /* previous result */
1898
1899 struct Curl_message msg; /* A single posted message. */
1900
1901 /* Array with the plain socket numbers this handle takes care of, in no
1902 particular order. Note that all sockets are added to the sockhash, where
1903 the state etc are also kept. This array is mostly used to detect when a
1904 socket is to be removed from the hash. See singlesocket(). */
1905 curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE];
1906 unsigned char actions[MAX_SOCKSPEREASYHANDLE]; /* action for each socket in
1907 sockets[] */
1908 int numsocks;
1909
1910 struct Names dns;
1911 struct Curl_multi *multi; /* if non-NULL, points to the multi handle
1912 struct to which this "belongs" when used by
1913 the multi interface */
1914 struct Curl_multi *multi_easy; /* if non-NULL, points to the multi handle
1915 struct to which this "belongs" when used
1916 by the easy interface */
1917 struct Curl_share *share; /* Share, handles global variable mutexing */
1918#ifdef USE_LIBPSL
1919 struct PslCache *psl; /* The associated PSL cache. */
1920#endif
1921 struct SingleRequest req; /* Request-specific data */
1922 struct UserDefined set; /* values set by the libcurl user */
1923 struct CookieInfo *cookies; /* the cookies, read from files and servers.
1924 NOTE that the 'cookie' field in the
1925 UserDefined struct defines if the "engine"
1926 is to be used or not. */
1927#ifndef CURL_DISABLE_HSTS
1928 struct hsts *hsts;
1929#endif
1930#ifndef CURL_DISABLE_ALTSVC
1931 struct altsvcinfo *asi; /* the alt-svc cache */
1932#endif
1933 struct Progress progress; /* for all the progress meter data */
1934 struct UrlState state; /* struct for fields used for state info and
1935 other dynamic purposes */
1936#ifndef CURL_DISABLE_FTP
1937 struct WildcardData wildcard; /* wildcard download state info */
1938#endif
1939 struct PureInfo info; /* stats, reports and info data */
1940 struct curl_tlssessioninfo tsi; /* Information about the TLS session, only
1941 valid after a client has asked for it */
1942#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
1943 iconv_t outbound_cd; /* for translating to the network encoding */
1944 iconv_t inbound_cd; /* for translating from the network encoding */
1945 iconv_t utf8_cd; /* for translating to UTF8 */
1946#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
1947#ifdef USE_HYPER
1948 struct hyptransfer hyp;
1949#endif
1950};
1951
1952#define LIBCURL_NAME "libcurl"
1953
1954#endif /* HEADER_CURL_URLDATA_H */
1955