1 #ifndef HEADER_CURL_URLDATA_H 2 #define HEADER_CURL_URLDATA_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2019, 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.haxx.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 53 #define DICT_MATCH "/MATCH:" 54 #define DICT_MATCH2 "/M:" 55 #define DICT_MATCH3 "/FIND:" 56 #define DICT_DEFINE "/DEFINE:" 57 #define DICT_DEFINE2 "/D:" 58 #define DICT_DEFINE3 "/LOOKUP:" 59 60 #define CURL_DEFAULT_USER "anonymous" 61 #define CURL_DEFAULT_PASSWORD "ftp@example.com" 62 63 /* Convenience defines for checking protocols or their SSL based version. Each 64 protocol handler should only ever have a single CURLPROTO_ in its protocol 65 field. */ 66 #define PROTO_FAMILY_HTTP (CURLPROTO_HTTP|CURLPROTO_HTTPS) 67 #define PROTO_FAMILY_FTP (CURLPROTO_FTP|CURLPROTO_FTPS) 68 #define PROTO_FAMILY_POP3 (CURLPROTO_POP3|CURLPROTO_POP3S) 69 #define PROTO_FAMILY_SMB (CURLPROTO_SMB|CURLPROTO_SMBS) 70 #define PROTO_FAMILY_SMTP (CURLPROTO_SMTP|CURLPROTO_SMTPS) 71 #define PROTO_FAMILY_SSH (CURLPROTO_SCP|CURLPROTO_SFTP) 72 73 #define DEFAULT_CONNCACHE_SIZE 5 74 75 /* length of longest IPv6 address string including the trailing null */ 76 #define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") 77 78 /* Default FTP/IMAP etc response timeout in milliseconds. 79 Symbian OS panics when given a timeout much greater than 1/2 hour. 80 */ 81 #define RESP_TIMEOUT (120*1000) 82 83 /* Max string intput length is a precaution against abuse and to detect junk 84 input easier and better. */ 85 #define CURL_MAX_INPUT_LENGTH 8000000 86 87 #include "cookie.h" 88 #include "psl.h" 89 #include "formdata.h" 90 91 #ifdef HAVE_NETINET_IN_H 92 #include <netinet/in.h> 93 #endif 94 #ifdef HAVE_NETINET_IN6_H 95 #include <netinet/in6.h> 96 #endif 97 98 #include "timeval.h" 99 100 #include <curl/curl.h> 101 102 #include "http_chunks.h" /* for the structs and enum stuff */ 103 #include "hostip.h" 104 #include "hash.h" 105 #include "splay.h" 106 107 /* return the count of bytes sent, or -1 on error */ 108 typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */ 109 int sockindex, /* socketindex */ 110 const void *buf, /* data to write */ 111 size_t len, /* max amount to write */ 112 CURLcode *err); /* error to return */ 113 114 /* return the count of bytes read, or -1 on error */ 115 typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */ 116 int sockindex, /* socketindex */ 117 char *buf, /* store data here */ 118 size_t len, /* max amount to read */ 119 CURLcode *err); /* error to return */ 120 121 #include "mime.h" 122 #include "imap.h" 123 #include "pop3.h" 124 #include "smtp.h" 125 #include "ftp.h" 126 #include "file.h" 127 #include "ssh.h" 128 #include "http.h" 129 #include "rtsp.h" 130 #include "smb.h" 131 #include "wildcard.h" 132 #include "multihandle.h" 133 #include "quic.h" 134 135 #ifdef HAVE_GSSAPI 136 # ifdef HAVE_GSSGNU 137 # include <gss.h> 138 # elif defined HAVE_GSSAPI_GSSAPI_H 139 # include <gssapi/gssapi.h> 140 # else 141 # include <gssapi.h> 142 # endif 143 # ifdef HAVE_GSSAPI_GSSAPI_GENERIC_H 144 # include <gssapi/gssapi_generic.h> 145 # endif 146 #endif 147 148 #ifdef HAVE_LIBSSH2_H 149 #include <libssh2.h> 150 #include <libssh2_sftp.h> 151 #endif /* HAVE_LIBSSH2_H */ 152 153 /* Initial size of the buffer to store headers in, it'll be enlarged in case 154 of need. */ 155 #define HEADERSIZE 256 156 157 #define CURLEASY_MAGIC_NUMBER 0xc0dedbadU 158 #define GOOD_EASY_HANDLE(x) \ 159 ((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER)) 160 161 /* the type we use for storing a single boolean bit */ 162 #ifdef _MSC_VER 163 typedef bool bit; 164 #define BIT(x) bool x 165 #else 166 typedef unsigned int bit; 167 #define BIT(x) bit x:1 168 #endif 169 170 #ifdef HAVE_GSSAPI 171 /* Types needed for krb5-ftp connections */ 172 struct krb5buffer { 173 void *data; 174 size_t size; 175 size_t index; 176 BIT(eof_flag); 177 }; 178 179 enum protection_level { 180 PROT_NONE, /* first in list */ 181 PROT_CLEAR, 182 PROT_SAFE, 183 PROT_CONFIDENTIAL, 184 PROT_PRIVATE, 185 PROT_CMD, 186 PROT_LAST /* last in list */ 187 }; 188 #endif 189 190 /* enum for the nonblocking SSL connection state machine */ 191 typedef enum { 192 ssl_connect_1, 193 ssl_connect_2, 194 ssl_connect_2_reading, 195 ssl_connect_2_writing, 196 ssl_connect_3, 197 ssl_connect_done 198 } ssl_connect_state; 199 200 typedef enum { 201 ssl_connection_none, 202 ssl_connection_negotiating, 203 ssl_connection_complete 204 } ssl_connection_state; 205 206 /* SSL backend-specific data; declared differently by each SSL backend */ 207 struct ssl_backend_data; 208 209 /* struct for data related to each SSL connection */ 210 struct ssl_connect_data { 211 /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm 212 but at least asked to or meaning to use it. See 'state' for the exact 213 current state of the connection. */ 214 ssl_connection_state state; 215 ssl_connect_state connecting_state; 216 #if defined(USE_SSL) 217 struct ssl_backend_data *backend; 218 #endif 219 BIT(use); 220 }; 221 222 struct ssl_primary_config { 223 long version; /* what version the client wants to use */ 224 long version_max; /* max supported version the client wants to use*/ 225 char *CApath; /* certificate dir (doesn't work on windows) */ 226 char *CAfile; /* certificate to verify peer against */ 227 char *clientcert; 228 char *random_file; /* path to file containing "random" data */ 229 char *egdsocket; /* path to file containing the EGD daemon socket */ 230 char *cipher_list; /* list of ciphers to use */ 231 char *cipher_list13; /* list of TLS 1.3 cipher suites to use */ 232 char *pinned_key; 233 BIT(verifypeer); /* set TRUE if this is desired */ 234 BIT(verifyhost); /* set TRUE if CN/SAN must match hostname */ 235 BIT(verifystatus); /* set TRUE if certificate status must be checked */ 236 BIT(sessionid); /* cache session IDs or not */ 237 }; 238 239 struct ssl_config_data { 240 struct ssl_primary_config primary; 241 long certverifyresult; /* result from the certificate verification */ 242 char *CRLfile; /* CRL to check certificate revocation */ 243 char *issuercert;/* optional issuer certificate filename */ 244 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */ 245 void *fsslctxp; /* parameter for call back */ 246 char *cert; /* client certificate file name */ 247 char *cert_type; /* format for certificate (default: PEM)*/ 248 char *key; /* private key file name */ 249 char *key_type; /* format for private key (default: PEM) */ 250 char *key_passwd; /* plain text private key password */ 251 #ifdef USE_TLS_SRP 252 char *username; /* TLS username (for, e.g., SRP) */ 253 char *password; /* TLS password (for, e.g., SRP) */ 254 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */ 255 #endif 256 BIT(certinfo); /* gather lots of certificate info */ 257 BIT(falsestart); 258 BIT(enable_beast); /* allow this flaw for interoperability's sake*/ 259 BIT(no_revoke); /* disable SSL certificate revocation checks */ 260 }; 261 262 struct ssl_general_config { 263 size_t max_ssl_sessions; /* SSL session id cache size */ 264 }; 265 266 /* information stored about one single SSL session */ 267 struct curl_ssl_session { 268 char *name; /* host name for which this ID was used */ 269 char *conn_to_host; /* host name for the connection (may be NULL) */ 270 const char *scheme; /* protocol scheme used */ 271 void *sessionid; /* as returned from the SSL layer */ 272 size_t idsize; /* if known, otherwise 0 */ 273 long age; /* just a number, the higher the more recent */ 274 int remote_port; /* remote port */ 275 int conn_to_port; /* remote port for the connection (may be -1) */ 276 struct ssl_primary_config ssl_config; /* setup for this session */ 277 }; 278 279 #ifdef USE_WINDOWS_SSPI 280 #include "curl_sspi.h" 281 #endif 282 283 /* Struct used for Digest challenge-response authentication */ 284 struct digestdata { 285 #if defined(USE_WINDOWS_SSPI) 286 BYTE *input_token; 287 size_t input_token_len; 288 CtxtHandle *http_context; 289 /* copy of user/passwd used to make the identity for http_context. 290 either may be NULL. */ 291 char *user; 292 char *passwd; 293 #else 294 char *nonce; 295 char *cnonce; 296 char *realm; 297 int algo; 298 char *opaque; 299 char *qop; 300 char *algorithm; 301 int nc; /* nounce count */ 302 BIT(stale); /* set true for re-negotiation */ 303 BIT(userhash); 304 #endif 305 }; 306 307 typedef enum { 308 NTLMSTATE_NONE, 309 NTLMSTATE_TYPE1, 310 NTLMSTATE_TYPE2, 311 NTLMSTATE_TYPE3, 312 NTLMSTATE_LAST 313 } curlntlm; 314 315 typedef enum { 316 GSS_AUTHNONE, 317 GSS_AUTHRECV, 318 GSS_AUTHSENT, 319 GSS_AUTHDONE, 320 GSS_AUTHSUCC 321 } curlnegotiate; 322 323 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) 324 #include <iconv.h> 325 #endif 326 327 /* Struct used for GSSAPI (Kerberos V5) authentication */ 328 #if defined(USE_KERBEROS5) 329 struct kerberos5data { 330 #if defined(USE_WINDOWS_SSPI) 331 CredHandle *credentials; 332 CtxtHandle *context; 333 TCHAR *spn; 334 SEC_WINNT_AUTH_IDENTITY identity; 335 SEC_WINNT_AUTH_IDENTITY *p_identity; 336 size_t token_max; 337 BYTE *output_token; 338 #else 339 gss_ctx_id_t context; 340 gss_name_t spn; 341 #endif 342 }; 343 #endif 344 345 /* Struct used for NTLM challenge-response authentication */ 346 #if defined(USE_NTLM) 347 struct ntlmdata { 348 #ifdef USE_WINDOWS_SSPI 349 /* The sslContext is used for the Schannel bindings. The 350 * api is available on the Windows 7 SDK and later. 351 */ 352 #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS 353 CtxtHandle *sslContext; 354 #endif 355 CredHandle *credentials; 356 CtxtHandle *context; 357 SEC_WINNT_AUTH_IDENTITY identity; 358 SEC_WINNT_AUTH_IDENTITY *p_identity; 359 size_t token_max; 360 BYTE *output_token; 361 BYTE *input_token; 362 size_t input_token_len; 363 TCHAR *spn; 364 #else 365 unsigned int flags; 366 unsigned char nonce[8]; 367 void *target_info; /* TargetInfo received in the ntlm type-2 message */ 368 unsigned int target_info_len; 369 #endif 370 }; 371 #endif 372 373 /* Struct used for Negotiate (SPNEGO) authentication */ 374 #ifdef USE_SPNEGO 375 struct negotiatedata { 376 #ifdef HAVE_GSSAPI 377 OM_uint32 status; 378 gss_ctx_id_t context; 379 gss_name_t spn; 380 gss_buffer_desc output_token; 381 #else 382 #ifdef USE_WINDOWS_SSPI 383 #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS 384 CtxtHandle *sslContext; 385 #endif 386 DWORD status; 387 CredHandle *credentials; 388 CtxtHandle *context; 389 SEC_WINNT_AUTH_IDENTITY identity; 390 SEC_WINNT_AUTH_IDENTITY *p_identity; 391 TCHAR *spn; 392 size_t token_max; 393 BYTE *output_token; 394 size_t output_token_length; 395 #endif 396 #endif 397 BIT(noauthpersist); 398 BIT(havenoauthpersist); 399 BIT(havenegdata); 400 BIT(havemultiplerequests); 401 }; 402 #endif 403 404 405 /* 406 * Boolean values that concerns this connection. 407 */ 408 struct ConnectBits { 409 /* always modify bits.close with the connclose() and connkeep() macros! */ 410 bool proxy_ssl_connected[2]; /* TRUE when SSL initialization for HTTPS proxy 411 is complete */ 412 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set 413 the first time on the first connect function call */ 414 BIT(close); /* if set, we close the connection after this request */ 415 BIT(reuse); /* if set, this is a re-used connection */ 416 BIT(altused); /* this is an alt-svc "redirect" */ 417 BIT(conn_to_host); /* if set, this connection has a "connect to host" 418 that overrides the host in the URL */ 419 BIT(conn_to_port); /* if set, this connection has a "connect to port" 420 that overrides the port in the URL (remote port) */ 421 BIT(proxy); /* if set, this transfer is done through a proxy - any type */ 422 BIT(httpproxy); /* if set, this transfer is done through a http proxy */ 423 BIT(socksproxy); /* if set, this transfer is done through a socks proxy */ 424 BIT(user_passwd); /* do we use user+password for this connection? */ 425 BIT(proxy_user_passwd); /* user+password for the proxy? */ 426 BIT(ipv6_ip); /* we communicate with a remote site specified with pure IPv6 427 IP address */ 428 BIT(ipv6); /* we communicate with a site using an IPv6 address */ 429 BIT(do_more); /* this is set TRUE if the ->curl_do_more() function is 430 supposed to be called, after ->curl_do() */ 431 BIT(protoconnstart);/* the protocol layer has STARTED its operation after 432 the TCP layer connect */ 433 BIT(retry); /* this connection is about to get closed and then 434 re-attempted at another connection. */ 435 BIT(tunnel_proxy); /* if CONNECT is used to "tunnel" through the proxy. 436 This is implicit when SSL-protocols are used through 437 proxies, but can also be enabled explicitly by 438 apps */ 439 BIT(authneg); /* TRUE when the auth phase has started, which means 440 that we are creating a request with an auth header, 441 but it is not the final request in the auth 442 negotiation. */ 443 BIT(rewindaftersend);/* TRUE when the sending couldn't be stopped even 444 though it will be discarded. When the whole send 445 operation is done, we must call the data rewind 446 callback. */ 447 #ifndef CURL_DISABLE_FTP 448 BIT(ftp_use_epsv); /* As set with CURLOPT_FTP_USE_EPSV, but if we find out 449 EPSV doesn't work we disable it for the forthcoming 450 requests */ 451 BIT(ftp_use_eprt); /* As set with CURLOPT_FTP_USE_EPRT, but if we find out 452 EPRT doesn't work we disable it for the forthcoming 453 requests */ 454 BIT(ftp_use_data_ssl); /* Enabled SSL for the data connection */ 455 #endif 456 BIT(netrc); /* name+password provided by netrc */ 457 BIT(userpwd_in_url); /* name+password found in url */ 458 BIT(stream_was_rewound); /* The stream was rewound after a request read 459 past the end of its response byte boundary */ 460 BIT(proxy_connect_closed); /* TRUE if a proxy disconnected the connection 461 in a CONNECT request with auth, so that 462 libcurl should reconnect and continue. */ 463 BIT(bound); /* set true if bind() has already been done on this socket/ 464 connection */ 465 BIT(type_set); /* type= was used in the URL */ 466 BIT(multiplex); /* connection is multiplexed */ 467 BIT(tcp_fastopen); /* use TCP Fast Open */ 468 BIT(tls_enable_npn); /* TLS NPN extension? */ 469 BIT(tls_enable_alpn); /* TLS ALPN extension? */ 470 BIT(socksproxy_connecting); /* connecting through a socks proxy */ 471 BIT(connect_only); 472 }; 473 474 struct hostname { 475 char *rawalloc; /* allocated "raw" version of the name */ 476 char *encalloc; /* allocated IDN-encoded version of the name */ 477 char *name; /* name to use internally, might be encoded, might be raw */ 478 const char *dispname; /* name to display, as 'name' might be encoded */ 479 }; 480 481 /* 482 * Flags on the keepon member of the Curl_transfer_keeper 483 */ 484 485 #define KEEP_NONE 0 486 #define KEEP_RECV (1<<0) /* there is or may be data to read */ 487 #define KEEP_SEND (1<<1) /* there is or may be data to write */ 488 #define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there 489 might still be data to read */ 490 #define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there 491 might still be data to write */ 492 #define KEEP_RECV_PAUSE (1<<4) /* reading is paused */ 493 #define KEEP_SEND_PAUSE (1<<5) /* writing is paused */ 494 495 #define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE) 496 #define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE) 497 498 struct Curl_async { 499 char *hostname; 500 int port; 501 struct Curl_dns_entry *dns; 502 int status; /* if done is TRUE, this is the status from the callback */ 503 void *os_specific; /* 'struct thread_data' for Windows */ 504 BIT(done); /* set TRUE when the lookup is complete */ 505 }; 506 507 #define FIRSTSOCKET 0 508 #define SECONDARYSOCKET 1 509 510 /* These function pointer types are here only to allow easier typecasting 511 within the source when we need to cast between data pointers (such as NULL) 512 and function pointers. */ 513 typedef CURLcode (*Curl_do_more_func)(struct connectdata *, int *); 514 typedef CURLcode (*Curl_done_func)(struct connectdata *, CURLcode, bool); 515 516 enum expect100 { 517 EXP100_SEND_DATA, /* enough waiting, just send the body now */ 518 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */ 519 EXP100_SENDING_REQUEST, /* still sending the request but will wait for 520 the 100 header once done with the request */ 521 EXP100_FAILED /* used on 417 Expectation Failed */ 522 }; 523 524 enum upgrade101 { 525 UPGR101_INIT, /* default state */ 526 UPGR101_REQUESTED, /* upgrade requested */ 527 UPGR101_RECEIVED, /* response received */ 528 UPGR101_WORKING /* talking upgraded protocol */ 529 }; 530 531 struct dohresponse { 532 unsigned char *memory; 533 size_t size; 534 }; 535 536 /* one of these for each DoH request */ 537 struct dnsprobe { 538 CURL *easy; 539 int dnstype; 540 unsigned char dohbuffer[512]; 541 size_t dohlen; 542 struct dohresponse serverdoh; 543 }; 544 545 struct dohdata { 546 struct curl_slist *headers; 547 struct dnsprobe probe[2]; 548 unsigned int pending; /* still outstanding requests */ 549 const char *host; 550 int port; 551 }; 552 553 /* 554 * Request specific data in the easy handle (Curl_easy). Previously, 555 * these members were on the connectdata struct but since a conn struct may 556 * now be shared between different Curl_easys, we store connection-specific 557 * data here. This struct only keeps stuff that's interesting for *this* 558 * request, as it will be cleared between multiple ones 559 */ 560 struct SingleRequest { 561 curl_off_t size; /* -1 if unknown at this point */ 562 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch, 563 -1 means unlimited */ 564 curl_off_t bytecount; /* total number of bytes read */ 565 curl_off_t writebytecount; /* number of bytes written */ 566 567 curl_off_t headerbytecount; /* only count received headers */ 568 curl_off_t deductheadercount; /* this amount of bytes doesn't count when we 569 check if anything has been transferred at 570 the end of a connection. We use this 571 counter to make only a 100 reply (without a 572 following second response code) result in a 573 CURLE_GOT_NOTHING error code */ 574 575 struct curltime start; /* transfer started at this time */ 576 struct curltime now; /* current time */ 577 enum { 578 HEADER_NORMAL, /* no bad header at all */ 579 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest 580 is normal data */ 581 HEADER_ALLBAD /* all was believed to be header */ 582 } badheader; /* the header was deemed bad and will be 583 written as body */ 584 int headerline; /* counts header lines to better track the 585 first one */ 586 char *hbufp; /* points at *end* of header line */ 587 size_t hbuflen; 588 char *str; /* within buf */ 589 char *str_start; /* within buf */ 590 char *end_ptr; /* within buf */ 591 char *p; /* within headerbuff */ 592 curl_off_t offset; /* possible resume offset read from the 593 Content-Range: header */ 594 int httpcode; /* error code from the 'HTTP/1.? XXX' or 595 'RTSP/1.? XXX' line */ 596 struct curltime start100; /* time stamp to wait for the 100 code from */ 597 enum expect100 exp100; /* expect 100 continue state */ 598 enum upgrade101 upgr101; /* 101 upgrade state */ 599 600 struct contenc_writer_s *writer_stack; /* Content unencoding stack. */ 601 /* See sec 3.5, RFC2616. */ 602 time_t timeofdoc; 603 long bodywrites; 604 char *buf; 605 int keepon; 606 char *location; /* This points to an allocated version of the Location: 607 header data */ 608 char *newurl; /* Set to the new URL to use when a redirect or a retry is 609 wanted */ 610 611 /* 'upload_present' is used to keep a byte counter of how much data there is 612 still left in the buffer, aimed for upload. */ 613 ssize_t upload_present; 614 615 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a 616 buffer, so the next read should read from where this pointer points to, 617 and the 'upload_present' contains the number of bytes available at this 618 position */ 619 char *upload_fromhere; 620 void *protop; /* Allocated protocol-specific data. Each protocol 621 handler makes sure this points to data it needs. */ 622 #ifndef CURL_DISABLE_DOH 623 struct dohdata doh; /* DoH specific data for this request */ 624 #endif 625 BIT(header); /* incoming data has HTTP header */ 626 BIT(content_range); /* set TRUE if Content-Range: was found */ 627 BIT(upload_done); /* set to TRUE when doing chunked transfer-encoding 628 upload and we're uploading the last chunk */ 629 BIT(ignorebody); /* we read a response-body but we ignore it! */ 630 BIT(http_bodyless); /* HTTP response status code is between 100 and 199, 631 204 or 304 */ 632 BIT(chunk); /* if set, this is a chunked transfer-encoding */ 633 BIT(upload_chunky); /* set TRUE if we are doing chunked transfer-encoding 634 on upload */ 635 BIT(getheader); /* TRUE if header parsing is wanted */ 636 BIT(forbidchunk); /* used only to explicitly forbid chunk-upload for 637 specific upload buffers. See readmoredata() in http.c 638 for details. */ 639 }; 640 641 /* 642 * Specific protocol handler. 643 */ 644 645 struct Curl_handler { 646 const char *scheme; /* URL scheme name. */ 647 648 /* Complement to setup_connection_internals(). */ 649 CURLcode (*setup_connection)(struct connectdata *); 650 651 /* These two functions MUST be set to be protocol dependent */ 652 CURLcode (*do_it)(struct connectdata *, bool *done); 653 Curl_done_func done; 654 655 /* If the curl_do() function is better made in two halves, this 656 * curl_do_more() function will be called afterwards, if set. For example 657 * for doing the FTP stuff after the PASV/PORT command. 658 */ 659 Curl_do_more_func do_more; 660 661 /* This function *MAY* be set to a protocol-dependent function that is run 662 * after the connect() and everything is done, as a step in the connection. 663 * The 'done' pointer points to a bool that should be set to TRUE if the 664 * function completes before return. If it doesn't complete, the caller 665 * should call the curl_connecting() function until it is. 666 */ 667 CURLcode (*connect_it)(struct connectdata *, bool *done); 668 669 /* See above. */ 670 CURLcode (*connecting)(struct connectdata *, bool *done); 671 CURLcode (*doing)(struct connectdata *, bool *done); 672 673 /* Called from the multi interface during the PROTOCONNECT phase, and it 674 should then return a proper fd set */ 675 int (*proto_getsock)(struct connectdata *conn, 676 curl_socket_t *socks); 677 678 /* Called from the multi interface during the DOING phase, and it should 679 then return a proper fd set */ 680 int (*doing_getsock)(struct connectdata *conn, 681 curl_socket_t *socks); 682 683 /* Called from the multi interface during the DO_MORE phase, and it should 684 then return a proper fd set */ 685 int (*domore_getsock)(struct connectdata *conn, 686 curl_socket_t *socks); 687 688 /* Called from the multi interface during the DO_DONE, PERFORM and 689 WAITPERFORM phases, and it should then return a proper fd set. Not setting 690 this will make libcurl use the generic default one. */ 691 int (*perform_getsock)(const struct connectdata *conn, 692 curl_socket_t *socks); 693 694 /* This function *MAY* be set to a protocol-dependent function that is run 695 * by the curl_disconnect(), as a step in the disconnection. If the handler 696 * is called because the connection has been considered dead, dead_connection 697 * is set to TRUE. 698 */ 699 CURLcode (*disconnect)(struct connectdata *, bool dead_connection); 700 701 /* If used, this function gets called from transfer.c:readwrite_data() to 702 allow the protocol to do extra reads/writes */ 703 CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn, 704 ssize_t *nread, bool *readmore); 705 706 /* This function can perform various checks on the connection. See 707 CONNCHECK_* for more information about the checks that can be performed, 708 and CONNRESULT_* for the results that can be returned. */ 709 unsigned int (*connection_check)(struct connectdata *conn, 710 unsigned int checks_to_perform); 711 712 long defport; /* Default port. */ 713 unsigned int protocol; /* See CURLPROTO_* - this needs to be the single 714 specific protocol bit */ 715 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */ 716 }; 717 718 #define PROTOPT_NONE 0 /* nothing extra */ 719 #define PROTOPT_SSL (1<<0) /* uses SSL */ 720 #define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */ 721 #define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */ 722 /* some protocols will have to call the underlying functions without regard to 723 what exact state the socket signals. IE even if the socket says "readable", 724 the send function might need to be called while uploading, or vice versa. 725 */ 726 #define PROTOPT_DIRLOCK (1<<3) 727 #define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */ 728 #define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it 729 gets a default */ 730 #define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle 731 url query strings (?foo=bar) ! */ 732 #define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per 733 request instead of per connection */ 734 #define PROTOPT_ALPN_NPN (1<<8) /* set ALPN and/or NPN for this */ 735 #define PROTOPT_STREAM (1<<9) /* a protocol with individual logical streams */ 736 #define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field 737 of the URL */ 738 #define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a 739 HTTP proxy as HTTP proxies may know 740 this protocol and act as a gateway */ 741 #define PROTOPT_WILDCARD (1<<12) /* protocol supports wildcard matching */ 742 743 #define CONNCHECK_NONE 0 /* No checks */ 744 #define CONNCHECK_ISDEAD (1<<0) /* Check if the connection is dead. */ 745 #define CONNCHECK_KEEPALIVE (1<<1) /* Perform any keepalive function. */ 746 747 #define CONNRESULT_NONE 0 /* No extra information. */ 748 #define CONNRESULT_DEAD (1<<0) /* The connection is dead. */ 749 750 #ifdef USE_RECV_BEFORE_SEND_WORKAROUND 751 struct postponed_data { 752 char *buffer; /* Temporal store for received data during 753 sending, must be freed */ 754 size_t allocated_size; /* Size of temporal store */ 755 size_t recv_size; /* Size of received data during sending */ 756 size_t recv_processed; /* Size of processed part of postponed data */ 757 #ifdef DEBUGBUILD 758 curl_socket_t bindsock;/* Structure must be bound to specific socket, 759 used only for DEBUGASSERT */ 760 #endif /* DEBUGBUILD */ 761 }; 762 #endif /* USE_RECV_BEFORE_SEND_WORKAROUND */ 763 764 struct proxy_info { 765 struct hostname host; 766 long port; 767 curl_proxytype proxytype; /* what kind of proxy that is in use */ 768 char *user; /* proxy user name string, allocated */ 769 char *passwd; /* proxy password string, allocated */ 770 }; 771 772 #define CONNECT_BUFFER_SIZE 16384 773 774 /* struct for HTTP CONNECT state data */ 775 struct http_connect_state { 776 char connect_buffer[CONNECT_BUFFER_SIZE]; 777 int perline; /* count bytes per line */ 778 int keepon; 779 char *line_start; 780 char *ptr; /* where to store more data */ 781 curl_off_t cl; /* size of content to read and ignore */ 782 enum { 783 TUNNEL_INIT, /* init/default/no tunnel state */ 784 TUNNEL_CONNECT, /* CONNECT has been sent off */ 785 TUNNEL_COMPLETE /* CONNECT response received completely */ 786 } tunnel_state; 787 BIT(chunked_encoding); 788 BIT(close_connection); 789 }; 790 791 struct ldapconninfo; 792 793 /* 794 * The connectdata struct contains all fields and variables that should be 795 * unique for an entire connection. 796 */ 797 struct connectdata { 798 /* 'data' is the CURRENT Curl_easy using this connection -- take great 799 caution that this might very well vary between different times this 800 connection is used! */ 801 struct Curl_easy *data; 802 803 struct curl_llist_element bundle_node; /* conncache */ 804 805 /* chunk is for HTTP chunked encoding, but is in the general connectdata 806 struct only because we can do just about any protocol through a HTTP proxy 807 and a HTTP proxy may in fact respond using chunked encoding */ 808 struct Curl_chunker chunk; 809 810 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */ 811 void *closesocket_client; 812 813 /* This is used by the connection cache logic. If this returns TRUE, this 814 handle is still used by one or more easy handles and can only used by any 815 other easy handle without careful consideration (== only for 816 multiplexing) and it cannot be used by another multi handle! */ 817 #define CONN_INUSE(c) ((c)->easyq.size) 818 819 /**** Fields set when inited and not modified again */ 820 long connection_id; /* Contains a unique number to make it easier to 821 track the connections in the log output */ 822 823 /* 'dns_entry' is the particular host we use. This points to an entry in the 824 DNS cache and it will not get pruned while locked. It gets unlocked in 825 Curl_done(). This entry will be NULL if the connection is re-used as then 826 there is no name resolve done. */ 827 struct Curl_dns_entry *dns_entry; 828 829 /* 'ip_addr' is the particular IP we connected to. It points to a struct 830 within the DNS cache, so this pointer is only valid as long as the DNS 831 cache entry remains locked. It gets unlocked in Curl_done() */ 832 Curl_addrinfo *ip_addr; 833 Curl_addrinfo *tempaddr[2]; /* for happy eyeballs */ 834 835 /* 'ip_addr_str' is the ip_addr data as a human readable string. 836 It remains available as long as the connection does, which is longer than 837 the ip_addr itself. */ 838 char ip_addr_str[MAX_IPADR_LEN]; 839 840 unsigned int scope_id; /* Scope id for IPv6 */ 841 842 enum { 843 TRNSPRT_TCP = 3, 844 TRNSPRT_UDP = 4, 845 TRNSPRT_QUIC = 5 846 } transport; 847 848 #ifdef ENABLE_QUIC 849 struct quicsocket hequic[2]; /* two, for happy eyeballs! */ 850 struct quicsocket *quic; 851 #endif 852 853 struct hostname host; 854 char *hostname_resolve; /* host name to resolve to address, allocated */ 855 char *secondaryhostname; /* secondary socket host name (ftp) */ 856 struct hostname conn_to_host; /* the host to connect to. valid only if 857 bits.conn_to_host is set */ 858 859 struct proxy_info socks_proxy; 860 struct proxy_info http_proxy; 861 862 long port; /* which port to use locally */ 863 int remote_port; /* the remote port, not the proxy port! */ 864 int conn_to_port; /* the remote port to connect to. valid only if 865 bits.conn_to_port is set */ 866 unsigned short secondary_port; /* secondary socket remote port to connect to 867 (ftp) */ 868 869 /* 'primary_ip' and 'primary_port' get filled with peer's numerical 870 ip address and port number whenever an outgoing connection is 871 *attempted* from the primary socket to a remote address. When more 872 than one address is tried for a connection these will hold data 873 for the last attempt. When the connection is actually established 874 these are updated with data which comes directly from the socket. */ 875 876 char primary_ip[MAX_IPADR_LEN]; 877 long primary_port; 878 879 /* 'local_ip' and 'local_port' get filled with local's numerical 880 ip address and port number whenever an outgoing connection is 881 **established** from the primary socket to a remote address. */ 882 883 char local_ip[MAX_IPADR_LEN]; 884 long local_port; 885 886 char *user; /* user name string, allocated */ 887 char *passwd; /* password string, allocated */ 888 char *options; /* options string, allocated */ 889 890 char *oauth_bearer; /* bearer token for OAuth 2.0, allocated */ 891 char *sasl_authzid; /* authorisation identity string, allocated */ 892 893 int httpversion; /* the HTTP version*10 reported by the server */ 894 int rtspversion; /* the RTSP version*10 reported by the server */ 895 896 struct curltime now; /* "current" time */ 897 struct curltime created; /* creation time */ 898 struct curltime lastused; /* when returned to the connection cache */ 899 curl_socket_t sock[2]; /* two sockets, the second is used for the data 900 transfer when doing FTP */ 901 curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */ 902 bool sock_accepted[2]; /* TRUE if the socket on this index was created with 903 accept() */ 904 Curl_recv *recv[2]; 905 Curl_send *send[2]; 906 907 #ifdef USE_RECV_BEFORE_SEND_WORKAROUND 908 struct postponed_data postponed[2]; /* two buffers for two sockets */ 909 #endif /* USE_RECV_BEFORE_SEND_WORKAROUND */ 910 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */ 911 struct ssl_connect_data proxy_ssl[2]; /* this is for proxy ssl-stuff */ 912 #ifdef USE_SSL 913 void *ssl_extra; /* separately allocated backend-specific data */ 914 #endif 915 struct ssl_primary_config ssl_config; 916 struct ssl_primary_config proxy_ssl_config; 917 struct ConnectBits bits; /* various state-flags for this connection */ 918 919 /* connecttime: when connect() is called on the current IP address. Used to 920 be able to track when to move on to try next IP - but only when the multi 921 interface is used. */ 922 struct curltime connecttime; 923 /* The two fields below get set in Curl_connecthost */ 924 int num_addr; /* number of addresses to try to connect to */ 925 timediff_t timeoutms_per_addr; /* how long time in milliseconds to spend on 926 trying to connect to each IP address */ 927 928 const struct Curl_handler *handler; /* Connection's protocol handler */ 929 const struct Curl_handler *given; /* The protocol first given */ 930 931 long ip_version; /* copied from the Curl_easy at creation time */ 932 933 /* Protocols can use a custom keepalive mechanism to keep connections alive. 934 This allows those protocols to track the last time the keepalive mechanism 935 was used on this connection. */ 936 struct curltime keepalive; 937 938 long upkeep_interval_ms; /* Time between calls for connection upkeep. */ 939 940 /**** curl_get() phase fields */ 941 942 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */ 943 curl_socket_t writesockfd; /* socket to write to, it may very 944 well be the same we read from. 945 CURL_SOCKET_BAD disables */ 946 947 /** Dynamically allocated strings, MUST be freed before this **/ 948 /** struct is killed. **/ 949 struct dynamically_allocated_data { 950 char *proxyuserpwd; 951 char *uagent; 952 char *accept_encoding; 953 char *userpwd; 954 char *rangeline; 955 char *ref; 956 char *host; 957 char *cookiehost; 958 char *rtsp_transport; 959 char *te; /* TE: request header */ 960 } allocptr; 961 962 #ifdef HAVE_GSSAPI 963 BIT(sec_complete); /* if Kerberos is enabled for this connection */ 964 enum protection_level command_prot; 965 enum protection_level data_prot; 966 enum protection_level request_data_prot; 967 size_t buffer_size; 968 struct krb5buffer in_buffer; 969 void *app_data; 970 const struct Curl_sec_client_mech *mech; 971 struct sockaddr_in local_addr; 972 #endif 973 974 #if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */ 975 struct kerberos5data krb5; /* variables into the structure definition, */ 976 #endif /* however, some of them are ftp specific. */ 977 978 struct curl_llist easyq; /* List of easy handles using this connection */ 979 curl_seek_callback seek_func; /* function that seeks the input */ 980 void *seek_client; /* pointer to pass to the seek() above */ 981 982 /*************** Request - specific items ************/ 983 #if defined(USE_WINDOWS_SSPI) && defined(SECPKG_ATTR_ENDPOINT_BINDINGS) 984 CtxtHandle *sslContext; 985 #endif 986 987 #if defined(USE_NTLM) 988 curlntlm http_ntlm_state; 989 curlntlm proxy_ntlm_state; 990 991 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes 992 because it authenticates connections, not 993 single requests! */ 994 struct ntlmdata proxyntlm; /* NTLM data for proxy */ 995 996 #if defined(NTLM_WB_ENABLED) 997 /* used for communication with Samba's winbind daemon helper ntlm_auth */ 998 curl_socket_t ntlm_auth_hlpr_socket; 999 pid_t ntlm_auth_hlpr_pid; 1000 char *challenge_header; 1001 char *response_header; 1002 #endif 1003 #endif 1004 1005 #ifdef USE_SPNEGO 1006 curlnegotiate http_negotiate_state; 1007 curlnegotiate proxy_negotiate_state; 1008 1009 struct negotiatedata negotiate; /* state data for host Negotiate auth */ 1010 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */ 1011 #endif 1012 1013 /* data used for the asynch name resolve callback */ 1014 struct Curl_async async; 1015 1016 /* These three are used for chunked-encoding trailer support */ 1017 char *trailer; /* allocated buffer to store trailer in */ 1018 int trlMax; /* allocated buffer size */ 1019 int trlPos; /* index of where to store data */ 1020 1021 union { 1022 struct ftp_conn ftpc; 1023 struct http_conn httpc; 1024 struct ssh_conn sshc; 1025 struct tftp_state_data *tftpc; 1026 struct imap_conn imapc; 1027 struct pop3_conn pop3c; 1028 struct smtp_conn smtpc; 1029 struct rtsp_conn rtspc; 1030 struct smb_conn smbc; 1031 void *rtmp; 1032 struct ldapconninfo *ldapc; 1033 } proto; 1034 1035 int cselect_bits; /* bitmask of socket events */ 1036 int waitfor; /* current READ/WRITE bits to wait for */ 1037 1038 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1039 int socks5_gssapi_enctype; 1040 #endif 1041 1042 /* When this connection is created, store the conditions for the local end 1043 bind. This is stored before the actual bind and before any connection is 1044 made and will serve the purpose of being used for comparison reasons so 1045 that subsequent bound-requested connections aren't accidentally re-using 1046 wrong connections. */ 1047 char *localdev; 1048 unsigned short localport; 1049 int localportrange; 1050 struct http_connect_state *connect_state; /* for HTTP CONNECT */ 1051 struct connectbundle *bundle; /* The bundle we are member of */ 1052 int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */ 1053 1054 #ifdef USE_UNIX_SOCKETS 1055 char *unix_domain_socket; 1056 BIT(abstract_unix_socket); 1057 #endif 1058 BIT(tls_upgraded); 1059 /* the two following *_inuse fields are only flags, not counters in any way. 1060 If TRUE it means the channel is in use, and if FALSE it means the channel 1061 is up for grabs by one. */ 1062 BIT(readchannel_inuse); /* whether the read channel is in use by an easy 1063 handle */ 1064 BIT(writechannel_inuse); /* whether the write channel is in use by an easy 1065 handle */ 1066 }; 1067 1068 /* The end of connectdata. */ 1069 1070 /* 1071 * Struct to keep statistical and informational data. 1072 * All variables in this struct must be initialized/reset in Curl_initinfo(). 1073 */ 1074 struct PureInfo { 1075 int httpcode; /* Recent HTTP, FTP, RTSP or SMTP response code */ 1076 int httpproxycode; /* response code from proxy when received separate */ 1077 int httpversion; /* the http version number X.Y = X*10+Y */ 1078 time_t filetime; /* If requested, this is might get set. Set to -1 if the 1079 time was unretrievable. */ 1080 curl_off_t header_size; /* size of read header(s) in bytes */ 1081 curl_off_t request_size; /* the amount of bytes sent in the request(s) */ 1082 unsigned long proxyauthavail; /* what proxy auth types were announced */ 1083 unsigned long httpauthavail; /* what host auth types were announced */ 1084 long numconnects; /* how many new connection did libcurl created */ 1085 char *contenttype; /* the content type of the object */ 1086 char *wouldredirect; /* URL this would've been redirected to if asked to */ 1087 curl_off_t retry_after; /* info from Retry-After: header */ 1088 1089 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip' 1090 and, 'conn_local_port' are copied over from the connectdata struct in 1091 order to allow curl_easy_getinfo() to return this information even when 1092 the session handle is no longer associated with a connection, and also 1093 allow curl_easy_reset() to clear this information from the session handle 1094 without disturbing information which is still alive, and that might be 1095 reused, in the connection cache. */ 1096 1097 char conn_primary_ip[MAX_IPADR_LEN]; 1098 long conn_primary_port; 1099 char conn_local_ip[MAX_IPADR_LEN]; 1100 long conn_local_port; 1101 const char *conn_scheme; 1102 unsigned int conn_protocol; 1103 struct curl_certinfo certs; /* info about the certs, only populated in 1104 OpenSSL, GnuTLS, Schannel, NSS and GSKit 1105 builds. Asked for with CURLOPT_CERTINFO 1106 / CURLINFO_CERTINFO */ 1107 BIT(timecond); /* set to TRUE if the time condition didn't match, which 1108 thus made the document NOT get fetched */ 1109 }; 1110 1111 1112 struct Progress { 1113 time_t lastshow; /* time() of the last displayed progress meter or NULL to 1114 force redraw at next call */ 1115 curl_off_t size_dl; /* total expected size */ 1116 curl_off_t size_ul; /* total expected size */ 1117 curl_off_t downloaded; /* transferred so far */ 1118 curl_off_t uploaded; /* transferred so far */ 1119 1120 curl_off_t current_speed; /* uses the currently fastest transfer */ 1121 1122 int width; /* screen width at download start */ 1123 int flags; /* see progress.h */ 1124 1125 timediff_t timespent; 1126 1127 curl_off_t dlspeed; 1128 curl_off_t ulspeed; 1129 1130 timediff_t t_nslookup; 1131 timediff_t t_connect; 1132 timediff_t t_appconnect; 1133 timediff_t t_pretransfer; 1134 timediff_t t_starttransfer; 1135 timediff_t t_redirect; 1136 1137 struct curltime start; 1138 struct curltime t_startsingle; 1139 struct curltime t_startop; 1140 struct curltime t_acceptdata; 1141 1142 1143 /* upload speed limit */ 1144 struct curltime ul_limit_start; 1145 curl_off_t ul_limit_size; 1146 /* download speed limit */ 1147 struct curltime dl_limit_start; 1148 curl_off_t dl_limit_size; 1149 1150 #define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */ 1151 1152 curl_off_t speeder[ CURR_TIME ]; 1153 struct curltime speeder_time[ CURR_TIME ]; 1154 int speeder_c; 1155 BIT(callback); /* set when progress callback is used */ 1156 BIT(is_t_startransfer_set); 1157 }; 1158 1159 typedef enum { 1160 HTTPREQ_NONE, /* first in list */ 1161 HTTPREQ_GET, 1162 HTTPREQ_POST, 1163 HTTPREQ_POST_FORM, /* we make a difference internally */ 1164 HTTPREQ_POST_MIME, /* we make a difference internally */ 1165 HTTPREQ_PUT, 1166 HTTPREQ_HEAD, 1167 HTTPREQ_OPTIONS, 1168 HTTPREQ_LAST /* last in list */ 1169 } Curl_HttpReq; 1170 1171 typedef enum { 1172 RTSPREQ_NONE, /* first in list */ 1173 RTSPREQ_OPTIONS, 1174 RTSPREQ_DESCRIBE, 1175 RTSPREQ_ANNOUNCE, 1176 RTSPREQ_SETUP, 1177 RTSPREQ_PLAY, 1178 RTSPREQ_PAUSE, 1179 RTSPREQ_TEARDOWN, 1180 RTSPREQ_GET_PARAMETER, 1181 RTSPREQ_SET_PARAMETER, 1182 RTSPREQ_RECORD, 1183 RTSPREQ_RECEIVE, 1184 RTSPREQ_LAST /* last in list */ 1185 } Curl_RtspReq; 1186 1187 /* 1188 * Values that are generated, temporary or calculated internally for a 1189 * "session handle" must be defined within the 'struct UrlState'. This struct 1190 * will be used within the Curl_easy struct. When the 'Curl_easy' 1191 * struct is cloned, this data MUST NOT be copied. 1192 * 1193 * Remember that any "state" information goes globally for the curl handle. 1194 * Session-data MUST be put in the connectdata struct and here. */ 1195 #define MAX_CURL_USER_LENGTH 256 1196 #define MAX_CURL_PASSWORD_LENGTH 256 1197 1198 struct auth { 1199 unsigned long want; /* Bitmask set to the authentication methods wanted by 1200 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */ 1201 unsigned long picked; 1202 unsigned long avail; /* Bitmask for what the server reports to support for 1203 this resource */ 1204 BIT(done); /* TRUE when the auth phase is done and ready to do the 1205 actual request */ 1206 BIT(multipass); /* TRUE if this is not yet authenticated but within the 1207 auth multipass negotiation */ 1208 BIT(iestyle); /* TRUE if digest should be done IE-style or FALSE if it 1209 should be RFC compliant */ 1210 }; 1211 1212 struct Curl_http2_dep { 1213 struct Curl_http2_dep *next; 1214 struct Curl_easy *data; 1215 }; 1216 1217 /* 1218 * This struct is for holding data that was attempted to get sent to the user's 1219 * callback but is held due to pausing. One instance per type (BOTH, HEADER, 1220 * BODY). 1221 */ 1222 struct tempbuf { 1223 char *buf; /* allocated buffer to keep data in when a write callback 1224 returns to make the connection paused */ 1225 size_t len; /* size of the 'tempwrite' allocated buffer */ 1226 int type; /* type of the 'tempwrite' buffer as a bitmask that is used with 1227 Curl_client_write() */ 1228 }; 1229 1230 /* Timers */ 1231 typedef enum { 1232 EXPIRE_100_TIMEOUT, 1233 EXPIRE_ASYNC_NAME, 1234 EXPIRE_CONNECTTIMEOUT, 1235 EXPIRE_DNS_PER_NAME, 1236 EXPIRE_HAPPY_EYEBALLS_DNS, /* See asyn-ares.c */ 1237 EXPIRE_HAPPY_EYEBALLS, 1238 EXPIRE_MULTI_PENDING, 1239 EXPIRE_RUN_NOW, 1240 EXPIRE_SPEEDCHECK, 1241 EXPIRE_TIMEOUT, 1242 EXPIRE_TOOFAST, 1243 EXPIRE_QUIC, 1244 EXPIRE_LAST /* not an actual timer, used as a marker only */ 1245 } expire_id; 1246 1247 1248 typedef enum { 1249 TRAILERS_NONE, 1250 TRAILERS_INITIALIZED, 1251 TRAILERS_SENDING, 1252 TRAILERS_DONE 1253 } trailers_state; 1254 1255 1256 /* 1257 * One instance for each timeout an easy handle can set. 1258 */ 1259 struct time_node { 1260 struct curl_llist_element list; 1261 struct curltime time; 1262 expire_id eid; 1263 }; 1264 1265 /* individual pieces of the URL */ 1266 struct urlpieces { 1267 char *scheme; 1268 char *hostname; 1269 char *port; 1270 char *user; 1271 char *password; 1272 char *options; 1273 char *path; 1274 char *query; 1275 }; 1276 1277 struct UrlState { 1278 1279 /* Points to the connection cache */ 1280 struct conncache *conn_cache; 1281 1282 /* buffers to store authentication data in, as parsed from input options */ 1283 struct curltime keeps_speed; /* for the progress meter really */ 1284 1285 struct connectdata *lastconnect; /* The last connection, NULL if undefined */ 1286 1287 char *headerbuff; /* allocated buffer to store headers in */ 1288 size_t headersize; /* size of the allocation */ 1289 1290 char *buffer; /* download buffer */ 1291 char *ulbuf; /* allocated upload buffer or NULL */ 1292 curl_off_t current_speed; /* the ProgressShow() function sets this, 1293 bytes / second */ 1294 char *first_host; /* host name of the first (not followed) request. 1295 if set, this should be the host name that we will 1296 sent authorization to, no else. Used to make Location: 1297 following not keep sending user+password... This is 1298 strdup() data. 1299 */ 1300 int first_remote_port; /* remote port of the first (not followed) request */ 1301 struct curl_ssl_session *session; /* array of 'max_ssl_sessions' size */ 1302 long sessionage; /* number of the most recent session */ 1303 unsigned int tempcount; /* number of entries in use in tempwrite, 0 - 3 */ 1304 struct tempbuf tempwrite[3]; /* BOTH, HEADER, BODY */ 1305 char *scratch; /* huge buffer[set.buffer_size*2] for upload CRLF replacing */ 1306 int os_errno; /* filled in with errno whenever an error occurs */ 1307 #ifdef HAVE_SIGNAL 1308 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */ 1309 void (*prev_signal)(int sig); 1310 #endif 1311 struct digestdata digest; /* state data for host Digest auth */ 1312 struct digestdata proxydigest; /* state data for proxy Digest auth */ 1313 1314 struct auth authhost; /* auth details for host */ 1315 struct auth authproxy; /* auth details for proxy */ 1316 void *resolver; /* resolver state, if it is used in the URL state - 1317 ares_channel f.e. */ 1318 1319 #if defined(USE_OPENSSL) 1320 /* void instead of ENGINE to avoid bleeding OpenSSL into this header */ 1321 void *engine; 1322 #endif /* USE_OPENSSL */ 1323 struct curltime expiretime; /* set this with Curl_expire() only */ 1324 struct Curl_tree timenode; /* for the splay stuff */ 1325 struct curl_llist timeoutlist; /* list of pending timeouts */ 1326 struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */ 1327 1328 /* a place to store the most recently set FTP entrypath */ 1329 char *most_recent_ftp_entrypath; 1330 1331 int httpversion; /* the lowest HTTP version*10 reported by any server 1332 involved in this request */ 1333 1334 #if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__) && \ 1335 !defined(__SYMBIAN32__) 1336 /* do FTP line-end conversions on most platforms */ 1337 #define CURL_DO_LINEEND_CONV 1338 /* for FTP downloads: track CRLF sequences that span blocks */ 1339 BIT(prev_block_had_trailing_cr); 1340 /* for FTP downloads: how many CRLFs did we converted to LFs? */ 1341 curl_off_t crlf_conversions; 1342 #endif 1343 char *range; /* range, if used. See README for detailed specification on 1344 this syntax. */ 1345 curl_off_t resume_from; /* continue [ftp] transfer from here */ 1346 1347 /* This RTSP state information survives requests and connections */ 1348 long rtsp_next_client_CSeq; /* the session's next client CSeq */ 1349 long rtsp_next_server_CSeq; /* the session's next server CSeq */ 1350 long rtsp_CSeq_recv; /* most recent CSeq received */ 1351 1352 curl_off_t infilesize; /* size of file to upload, -1 means unknown. 1353 Copied from set.filesize at start of operation */ 1354 1355 size_t drain; /* Increased when this stream has data to read, even if its 1356 socket is not necessarily is readable. Decreased when 1357 checked. */ 1358 1359 curl_read_callback fread_func; /* read callback/function */ 1360 void *in; /* CURLOPT_READDATA */ 1361 1362 struct Curl_easy *stream_depends_on; 1363 int stream_weight; 1364 CURLU *uh; /* URL handle for the current parsed URL */ 1365 struct urlpieces up; 1366 #ifndef CURL_DISABLE_HTTP 1367 size_t trailers_bytes_sent; 1368 Curl_send_buffer *trailers_buf; /* a buffer containing the compiled trailing 1369 headers */ 1370 #endif 1371 trailers_state trailers_state; /* whether we are sending trailers 1372 and what stage are we at */ 1373 #ifdef CURLDEBUG 1374 BIT(conncache_lock); 1375 #endif 1376 /* when curl_easy_perform() is called, the multi handle is "owned" by 1377 the easy handle so curl_easy_cleanup() on such an easy handle will 1378 also close the multi handle! */ 1379 BIT(multi_owned_by_easy); 1380 1381 BIT(this_is_a_follow); /* this is a followed Location: request */ 1382 BIT(refused_stream); /* this was refused, try again */ 1383 BIT(errorbuf); /* Set to TRUE if the error buffer is already filled in. 1384 This must be set to FALSE every time _easy_perform() is 1385 called. */ 1386 BIT(allow_port); /* Is set.use_port allowed to take effect or not. This 1387 is always set TRUE when curl_easy_perform() is called. */ 1388 BIT(authproblem); /* TRUE if there's some problem authenticating */ 1389 /* set after initial USER failure, to prevent an authentication loop */ 1390 BIT(ftp_trying_alternative); 1391 BIT(wildcardmatch); /* enable wildcard matching */ 1392 BIT(expect100header); /* TRUE if we added Expect: 100-continue */ 1393 BIT(use_range); 1394 BIT(rangestringalloc); /* the range string is malloc()'ed */ 1395 BIT(done); /* set to FALSE when Curl_init_do() is called and set to TRUE 1396 when multi_done() is called, to prevent multi_done() to get 1397 invoked twice when the multi interface is used. */ 1398 BIT(stream_depends_e); /* set or don't set the Exclusive bit */ 1399 BIT(previouslypending); /* this transfer WAS in the multi->pending queue */ 1400 BIT(cookie_engine); 1401 }; 1402 1403 1404 /* 1405 * This 'DynamicStatic' struct defines dynamic states that actually change 1406 * values in the 'UserDefined' area, which MUST be taken into consideration 1407 * if the UserDefined struct is cloned or similar. You can probably just 1408 * copy these, but each one indicate a special action on other data. 1409 */ 1410 1411 struct DynamicStatic { 1412 char *url; /* work URL, copied from UserDefined */ 1413 char *referer; /* referer string */ 1414 struct curl_slist *cookielist; /* list of cookie files set by 1415 curl_easy_setopt(COOKIEFILE) calls */ 1416 struct curl_slist *resolve; /* set to point to the set.resolve list when 1417 this should be dealt with in pretransfer */ 1418 BIT(url_alloc); /* URL string is malloc()'ed */ 1419 BIT(referer_alloc); /* referer string is malloc()ed */ 1420 BIT(wildcard_resolve); /* Set to true if any resolve change is a 1421 wildcard */ 1422 }; 1423 1424 /* 1425 * This 'UserDefined' struct must only contain data that is set once to go 1426 * for many (perhaps) independent connections. Values that are generated or 1427 * calculated internally for the "session handle" MUST be defined within the 1428 * 'struct UrlState' instead. The only exceptions MUST note the changes in 1429 * the 'DynamicStatic' struct. 1430 * Character pointer fields point to dynamic storage, unless otherwise stated. 1431 */ 1432 1433 struct Curl_multi; /* declared and used only in multi.c */ 1434 1435 enum dupstring { 1436 STRING_CERT_ORIG, /* client certificate file name */ 1437 STRING_CERT_PROXY, /* client certificate file name */ 1438 STRING_CERT_TYPE_ORIG, /* format for certificate (default: PEM)*/ 1439 STRING_CERT_TYPE_PROXY, /* format for certificate (default: PEM)*/ 1440 STRING_COOKIE, /* HTTP cookie string to send */ 1441 STRING_COOKIEJAR, /* dump all cookies to this file */ 1442 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */ 1443 STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL doesn't specify */ 1444 STRING_DEVICE, /* local network interface/address to use */ 1445 STRING_ENCODING, /* Accept-Encoding string */ 1446 STRING_FTP_ACCOUNT, /* ftp account data */ 1447 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */ 1448 STRING_FTPPORT, /* port to send with the FTP PORT command */ 1449 STRING_KEY_ORIG, /* private key file name */ 1450 STRING_KEY_PROXY, /* private key file name */ 1451 STRING_KEY_PASSWD_ORIG, /* plain text private key password */ 1452 STRING_KEY_PASSWD_PROXY, /* plain text private key password */ 1453 STRING_KEY_TYPE_ORIG, /* format for private key (default: PEM) */ 1454 STRING_KEY_TYPE_PROXY, /* format for private key (default: PEM) */ 1455 STRING_KRB_LEVEL, /* krb security level */ 1456 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find 1457 $HOME/.netrc */ 1458 STRING_PROXY, /* proxy to use */ 1459 STRING_PRE_PROXY, /* pre socks proxy to use */ 1460 STRING_SET_RANGE, /* range, if used */ 1461 STRING_SET_REFERER, /* custom string for the HTTP referer field */ 1462 STRING_SET_URL, /* what original URL to work on */ 1463 STRING_SSL_CAPATH_ORIG, /* CA directory name (doesn't work on windows) */ 1464 STRING_SSL_CAPATH_PROXY, /* CA directory name (doesn't work on windows) */ 1465 STRING_SSL_CAFILE_ORIG, /* certificate file to verify peer against */ 1466 STRING_SSL_CAFILE_PROXY, /* certificate file to verify peer against */ 1467 STRING_SSL_PINNEDPUBLICKEY_ORIG, /* public key file to verify peer against */ 1468 STRING_SSL_PINNEDPUBLICKEY_PROXY, /* public key file to verify proxy */ 1469 STRING_SSL_CIPHER_LIST_ORIG, /* list of ciphers to use */ 1470 STRING_SSL_CIPHER_LIST_PROXY, /* list of ciphers to use */ 1471 STRING_SSL_CIPHER13_LIST_ORIG, /* list of TLS 1.3 ciphers to use */ 1472 STRING_SSL_CIPHER13_LIST_PROXY, /* list of TLS 1.3 ciphers to use */ 1473 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */ 1474 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */ 1475 STRING_USERAGENT, /* User-Agent string */ 1476 STRING_SSL_CRLFILE_ORIG, /* crl file to check certificate */ 1477 STRING_SSL_CRLFILE_PROXY, /* crl file to check certificate */ 1478 STRING_SSL_ISSUERCERT_ORIG, /* issuer cert file to check certificate */ 1479 STRING_SSL_ISSUERCERT_PROXY, /* issuer cert file to check certificate */ 1480 STRING_SSL_ENGINE, /* name of ssl engine */ 1481 STRING_USERNAME, /* <username>, if used */ 1482 STRING_PASSWORD, /* <password>, if used */ 1483 STRING_OPTIONS, /* <options>, if used */ 1484 STRING_PROXYUSERNAME, /* Proxy <username>, if used */ 1485 STRING_PROXYPASSWORD, /* Proxy <password>, if used */ 1486 STRING_NOPROXY, /* List of hosts which should not use the proxy, if 1487 used */ 1488 STRING_RTSP_SESSION_ID, /* Session ID to use */ 1489 STRING_RTSP_STREAM_URI, /* Stream URI for this request */ 1490 STRING_RTSP_TRANSPORT, /* Transport for this session */ 1491 #ifdef USE_SSH 1492 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */ 1493 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */ 1494 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */ 1495 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */ 1496 #endif 1497 STRING_PROXY_SERVICE_NAME, /* Proxy service name */ 1498 STRING_SERVICE_NAME, /* Service name */ 1499 STRING_MAIL_FROM, 1500 STRING_MAIL_AUTH, 1501 1502 #ifdef USE_TLS_SRP 1503 STRING_TLSAUTH_USERNAME_ORIG, /* TLS auth <username> */ 1504 STRING_TLSAUTH_USERNAME_PROXY, /* TLS auth <username> */ 1505 STRING_TLSAUTH_PASSWORD_ORIG, /* TLS auth <password> */ 1506 STRING_TLSAUTH_PASSWORD_PROXY, /* TLS auth <password> */ 1507 #endif 1508 STRING_BEARER, /* <bearer>, if used */ 1509 #ifdef USE_UNIX_SOCKETS 1510 STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */ 1511 #endif 1512 STRING_TARGET, /* CURLOPT_REQUEST_TARGET */ 1513 STRING_DOH, /* CURLOPT_DOH_URL */ 1514 #ifdef USE_ALTSVC 1515 STRING_ALTSVC, /* CURLOPT_ALTSVC */ 1516 #endif 1517 STRING_SASL_AUTHZID, /* CURLOPT_SASL_AUTHZID */ 1518 #ifndef CURL_DISABLE_PROXY 1519 STRING_TEMP_URL, /* temp URL storage for proxy use */ 1520 #endif 1521 /* -- end of zero-terminated strings -- */ 1522 1523 STRING_LASTZEROTERMINATED, 1524 1525 /* -- below this are pointers to binary data that cannot be strdup'ed. --- */ 1526 1527 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */ 1528 1529 STRING_LAST /* not used, just an end-of-list marker */ 1530 }; 1531 1532 /* callback that gets called when this easy handle is completed within a multi 1533 handle. Only used for internally created transfers, like for example 1534 DoH. */ 1535 typedef int (*multidone_func)(struct Curl_easy *easy, CURLcode result); 1536 1537 struct UserDefined { 1538 FILE *err; /* the stderr user data goes here */ 1539 void *debugdata; /* the data that will be passed to fdebug */ 1540 char *errorbuffer; /* (Static) store failure messages in here */ 1541 long proxyport; /* If non-zero, use this port number by default. If the 1542 proxy string features a ":[port]" that one will override 1543 this. */ 1544 void *out; /* CURLOPT_WRITEDATA */ 1545 void *in_set; /* CURLOPT_READDATA */ 1546 void *writeheader; /* write the header to this if non-NULL */ 1547 void *rtp_out; /* write RTP to this if non-NULL */ 1548 long use_port; /* which port to use (when not using default) */ 1549 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */ 1550 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */ 1551 unsigned long socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */ 1552 long followlocation; /* as in HTTP Location: */ 1553 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1 1554 for infinity */ 1555 1556 int keep_post; /* keep POSTs as POSTs after a 30x request; each 1557 bit represents a request, from 301 to 303 */ 1558 void *postfields; /* if POST, set the fields' values here */ 1559 curl_seek_callback seek_func; /* function that seeks the input */ 1560 curl_off_t postfieldsize; /* if POST, this might have a size to use instead 1561 of strlen(), and then the data *may* be binary 1562 (contain zero bytes) */ 1563 unsigned short localport; /* local port number to bind to */ 1564 int localportrange; /* number of additional port numbers to test in case the 1565 'localport' one can't be bind()ed */ 1566 curl_write_callback fwrite_func; /* function that stores the output */ 1567 curl_write_callback fwrite_header; /* function that stores headers */ 1568 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */ 1569 curl_read_callback fread_func_set; /* function that reads the input */ 1570 curl_progress_callback fprogress; /* OLD and deprecated progress callback */ 1571 curl_xferinfo_callback fxferinfo; /* progress callback */ 1572 curl_debug_callback fdebug; /* function that write informational data */ 1573 curl_ioctl_callback ioctl_func; /* function for I/O control */ 1574 curl_sockopt_callback fsockopt; /* function for setting socket options */ 1575 void *sockopt_client; /* pointer to pass to the socket options callback */ 1576 curl_opensocket_callback fopensocket; /* function for checking/translating 1577 the address and opening the 1578 socket */ 1579 void *opensocket_client; 1580 curl_closesocket_callback fclosesocket; /* function for closing the 1581 socket */ 1582 void *closesocket_client; 1583 1584 void *seek_client; /* pointer to pass to the seek callback */ 1585 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */ 1586 /* function to convert from the network encoding: */ 1587 curl_conv_callback convfromnetwork; 1588 /* function to convert to the network encoding: */ 1589 curl_conv_callback convtonetwork; 1590 /* function to convert from UTF-8 encoding: */ 1591 curl_conv_callback convfromutf8; 1592 1593 void *progress_client; /* pointer to pass to the progress callback */ 1594 void *ioctl_client; /* pointer to pass to the ioctl callback */ 1595 long timeout; /* in milliseconds, 0 means no timeout */ 1596 long connecttimeout; /* in milliseconds, 0 means no timeout */ 1597 long accepttimeout; /* in milliseconds, 0 means no timeout */ 1598 long happy_eyeballs_timeout; /* in milliseconds, 0 is a valid value */ 1599 long server_response_timeout; /* in milliseconds, 0 means no timeout */ 1600 long maxage_conn; /* in seconds, max idle time to allow a connection that 1601 is to be reused */ 1602 long tftp_blksize; /* in bytes, 0 means use default */ 1603 curl_off_t filesize; /* size of file to upload, -1 means unknown */ 1604 long low_speed_limit; /* bytes/second */ 1605 long low_speed_time; /* number of seconds */ 1606 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */ 1607 curl_off_t max_recv_speed; /* high speed limit in bytes/second for 1608 download */ 1609 curl_off_t set_resume_from; /* continue [ftp] transfer from here */ 1610 struct curl_slist *headers; /* linked list of extra headers */ 1611 struct curl_slist *proxyheaders; /* linked list of extra CONNECT headers */ 1612 struct curl_httppost *httppost; /* linked list of old POST data */ 1613 curl_mimepart mimepost; /* MIME/POST data. */ 1614 struct curl_slist *quote; /* after connection is established */ 1615 struct curl_slist *postquote; /* after the transfer */ 1616 struct curl_slist *prequote; /* before the transfer, after type */ 1617 struct curl_slist *source_quote; /* 3rd party quote */ 1618 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before 1619 the transfer on source host */ 1620 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after 1621 the transfer on source host */ 1622 struct curl_slist *telnet_options; /* linked list of telnet options */ 1623 struct curl_slist *resolve; /* list of names to add/remove from 1624 DNS cache */ 1625 struct curl_slist *connect_to; /* list of host:port mappings to override 1626 the hostname and port to connect to */ 1627 curl_TimeCond timecondition; /* kind of time/date comparison */ 1628 time_t timevalue; /* what time to compare with */ 1629 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */ 1630 long httpversion; /* when non-zero, a specific HTTP version requested to 1631 be used in the library's request(s) */ 1632 struct ssl_config_data ssl; /* user defined SSL stuff */ 1633 struct ssl_config_data proxy_ssl; /* user defined SSL stuff for proxy */ 1634 struct ssl_general_config general_ssl; /* general user defined SSL stuff */ 1635 curl_proxytype proxytype; /* what kind of proxy that is in use */ 1636 long dns_cache_timeout; /* DNS cache timeout */ 1637 long buffer_size; /* size of receive buffer to use */ 1638 size_t upload_buffer_size; /* size of upload buffer to use, 1639 keep it >= CURL_MAX_WRITE_SIZE */ 1640 void *private_data; /* application-private data */ 1641 struct curl_slist *http200aliases; /* linked list of aliases for http200 */ 1642 long ipver; /* the CURL_IPRESOLVE_* defines in the public header file 1643 0 - whatever, 1 - v2, 2 - v6 */ 1644 curl_off_t max_filesize; /* Maximum file size to download */ 1645 #ifndef CURL_DISABLE_FTP 1646 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */ 1647 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */ 1648 curl_ftpccc ftp_ccc; /* FTP CCC options */ 1649 #endif 1650 int ftp_create_missing_dirs; /* 1 - create directories that don't exist 1651 2 - the same but also allow MKD to fail once 1652 */ 1653 curl_sshkeycallback ssh_keyfunc; /* key matching callback */ 1654 void *ssh_keyfunc_userp; /* custom pointer to callback */ 1655 enum CURL_NETRC_OPTION 1656 use_netrc; /* defined in include/curl.h */ 1657 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or 1658 IMAP or POP3 or others! */ 1659 long new_file_perms; /* Permissions to use when creating remote files */ 1660 long new_directory_perms; /* Permissions to use when creating remote dirs */ 1661 long ssh_auth_types; /* allowed SSH auth types */ 1662 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */ 1663 unsigned int scope_id; /* Scope id for IPv6 */ 1664 long allowed_protocols; 1665 long redir_protocols; 1666 struct curl_slist *mail_rcpt; /* linked list of mail recipients */ 1667 /* Common RTSP header options */ 1668 Curl_RtspReq rtspreq; /* RTSP request type */ 1669 long rtspversion; /* like httpversion, for RTSP */ 1670 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer 1671 starts */ 1672 curl_chunk_end_callback chunk_end; /* called after part transferring 1673 stopped */ 1674 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds 1675 to pattern (e.g. if WILDCARDMATCH is on) */ 1676 void *fnmatch_data; 1677 1678 long gssapi_delegation; /* GSS-API credential delegation, see the 1679 documentation of CURLOPT_GSSAPI_DELEGATION */ 1680 1681 long tcp_keepidle; /* seconds in idle before sending keepalive probe */ 1682 long tcp_keepintvl; /* seconds between TCP keepalive probes */ 1683 1684 size_t maxconnects; /* Max idle connections in the connection cache */ 1685 1686 long expect_100_timeout; /* in milliseconds */ 1687 struct Curl_easy *stream_depends_on; 1688 int stream_weight; 1689 struct Curl_http2_dep *stream_dependents; 1690 1691 curl_resolver_start_callback resolver_start; /* optional callback called 1692 before resolver start */ 1693 void *resolver_start_client; /* pointer to pass to resolver start callback */ 1694 long upkeep_interval_ms; /* Time between calls for connection upkeep. */ 1695 multidone_func fmultidone; 1696 struct Curl_easy *dohfor; /* this is a DoH request for that transfer */ 1697 CURLU *uh; /* URL handle for the current parsed URL */ 1698 void *trailer_data; /* pointer to pass to trailer data callback */ 1699 curl_trailer_callback trailer_callback; /* trailing data callback */ 1700 BIT(is_fread_set); /* has read callback been set to non-NULL? */ 1701 BIT(is_fwrite_set); /* has write callback been set to non-NULL? */ 1702 BIT(free_referer); /* set TRUE if 'referer' points to a string we 1703 allocated */ 1704 BIT(tftp_no_options); /* do not send TFTP options requests */ 1705 BIT(sep_headers); /* handle host and proxy headers separately */ 1706 BIT(cookiesession); /* new cookie session? */ 1707 BIT(crlf); /* convert crlf on ftp upload(?) */ 1708 BIT(strip_path_slash); /* strip off initial slash from path */ 1709 BIT(ssh_compression); /* enable SSH compression */ 1710 1711 /* Here follows boolean settings that define how to behave during 1712 this session. They are STATIC, set by libcurl users or at least initially 1713 and they don't change during operations. */ 1714 BIT(get_filetime); /* get the time and get of the remote file */ 1715 BIT(tunnel_thru_httpproxy); /* use CONNECT through a HTTP proxy */ 1716 BIT(prefer_ascii); /* ASCII rather than binary */ 1717 BIT(ftp_append); /* append, not overwrite, on upload */ 1718 BIT(ftp_list_only); /* switch FTP command for listing directories */ 1719 #ifndef CURL_DISABLE_FTP 1720 BIT(ftp_use_port); /* use the FTP PORT command */ 1721 BIT(ftp_use_epsv); /* if EPSV is to be attempted or not */ 1722 BIT(ftp_use_eprt); /* if EPRT is to be attempted or not */ 1723 BIT(ftp_use_pret); /* if PRET is to be used before PASV or not */ 1724 BIT(ftp_skip_ip); /* skip the IP address the FTP server passes on to 1725 us */ 1726 #endif 1727 BIT(hide_progress); /* don't use the progress meter */ 1728 BIT(http_fail_on_error); /* fail on HTTP error codes >= 400 */ 1729 BIT(http_keep_sending_on_error); /* for HTTP status codes >= 300 */ 1730 BIT(http_follow_location); /* follow HTTP redirects */ 1731 BIT(http_transfer_encoding); /* request compressed HTTP transfer-encoding */ 1732 BIT(allow_auth_to_other_hosts); 1733 BIT(include_header); /* include received protocol headers in data output */ 1734 BIT(http_set_referer); /* is a custom referer used */ 1735 BIT(http_auto_referer); /* set "correct" referer when following 1736 location: */ 1737 BIT(opt_no_body); /* as set with CURLOPT_NOBODY */ 1738 BIT(upload); /* upload request */ 1739 BIT(verbose); /* output verbosity */ 1740 BIT(krb); /* Kerberos connection requested */ 1741 BIT(reuse_forbid); /* forbidden to be reused, close after use */ 1742 BIT(reuse_fresh); /* do not re-use an existing connection */ 1743 BIT(no_signal); /* do not use any signal/alarm handler */ 1744 BIT(tcp_nodelay); /* whether to enable TCP_NODELAY or not */ 1745 BIT(ignorecl); /* ignore content length */ 1746 BIT(connect_only); /* make connection, let application use the socket */ 1747 BIT(http_te_skip); /* pass the raw body data to the user, even when 1748 transfer-encoded (chunked, compressed) */ 1749 BIT(http_ce_skip); /* pass the raw body data to the user, even when 1750 content-encoded (chunked, compressed) */ 1751 BIT(proxy_transfer_mode); /* set transfer mode (;type=<a|i>) when doing 1752 FTP via an HTTP proxy */ 1753 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1754 BIT(socks5_gssapi_nec); /* Flag to support NEC SOCKS5 server */ 1755 #endif 1756 BIT(sasl_ir); /* Enable/disable SASL initial response */ 1757 BIT(wildcard_enabled); /* enable wildcard matching */ 1758 BIT(tcp_keepalive); /* use TCP keepalives */ 1759 BIT(tcp_fastopen); /* use TCP Fast Open */ 1760 BIT(ssl_enable_npn); /* TLS NPN extension? */ 1761 BIT(ssl_enable_alpn);/* TLS ALPN extension? */ 1762 BIT(path_as_is); /* allow dotdots? */ 1763 BIT(pipewait); /* wait for multiplex status before starting a new 1764 connection */ 1765 BIT(suppress_connect_headers); /* suppress proxy CONNECT response headers 1766 from user callbacks */ 1767 BIT(dns_shuffle_addresses); /* whether to shuffle addresses before use */ 1768 BIT(stream_depends_e); /* set or don't set the Exclusive bit */ 1769 BIT(haproxyprotocol); /* whether to send HAProxy PROXY protocol v1 1770 header */ 1771 BIT(abstract_unix_socket); 1772 BIT(disallow_username_in_url); /* disallow username in url */ 1773 BIT(doh); /* DNS-over-HTTPS enabled */ 1774 BIT(doh_get); /* use GET for DoH requests, instead of POST */ 1775 BIT(http09_allowed); /* allow HTTP/0.9 responses */ 1776 }; 1777 1778 struct Names { 1779 struct curl_hash *hostcache; 1780 enum { 1781 HCACHE_NONE, /* not pointing to anything */ 1782 HCACHE_MULTI, /* points to a shared one in the multi handle */ 1783 HCACHE_SHARED /* points to a shared one in a shared object */ 1784 } hostcachetype; 1785 }; 1786 1787 /* 1788 * The 'connectdata' struct MUST have all the connection oriented stuff as we 1789 * may have several simultaneous connections and connection structs in memory. 1790 * 1791 * The 'struct UserDefined' must only contain data that is set once to go for 1792 * many (perhaps) independent connections. Values that are generated or 1793 * calculated internally for the "session handle" must be defined within the 1794 * 'struct UrlState' instead. 1795 */ 1796 1797 struct Curl_easy { 1798 /* first, two fields for the linked list of these */ 1799 struct Curl_easy *next; 1800 struct Curl_easy *prev; 1801 1802 struct connectdata *conn; 1803 struct curl_llist_element connect_queue; 1804 struct curl_llist_element conn_queue; /* list per connectdata */ 1805 1806 CURLMstate mstate; /* the handle's state */ 1807 CURLcode result; /* previous result */ 1808 1809 struct Curl_message msg; /* A single posted message. */ 1810 1811 /* Array with the plain socket numbers this handle takes care of, in no 1812 particular order. Note that all sockets are added to the sockhash, where 1813 the state etc are also kept. This array is mostly used to detect when a 1814 socket is to be removed from the hash. See singlesocket(). */ 1815 curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE]; 1816 int actions[MAX_SOCKSPEREASYHANDLE]; /* action for each socket in 1817 sockets[] */ 1818 int numsocks; 1819 1820 struct Names dns; 1821 struct Curl_multi *multi; /* if non-NULL, points to the multi handle 1822 struct to which this "belongs" when used by 1823 the multi interface */ 1824 struct Curl_multi *multi_easy; /* if non-NULL, points to the multi handle 1825 struct to which this "belongs" when used 1826 by the easy interface */ 1827 struct Curl_share *share; /* Share, handles global variable mutexing */ 1828 #ifdef USE_LIBPSL 1829 struct PslCache *psl; /* The associated PSL cache. */ 1830 #endif 1831 struct SingleRequest req; /* Request-specific data */ 1832 struct UserDefined set; /* values set by the libcurl user */ 1833 struct DynamicStatic change; /* possibly modified userdefined data */ 1834 struct CookieInfo *cookies; /* the cookies, read from files and servers. 1835 NOTE that the 'cookie' field in the 1836 UserDefined struct defines if the "engine" 1837 is to be used or not. */ 1838 #ifdef USE_ALTSVC 1839 struct altsvcinfo *asi; /* the alt-svc cache */ 1840 #endif 1841 struct Progress progress; /* for all the progress meter data */ 1842 struct UrlState state; /* struct for fields used for state info and 1843 other dynamic purposes */ 1844 #ifndef CURL_DISABLE_FTP 1845 struct WildcardData wildcard; /* wildcard download state info */ 1846 #endif 1847 struct PureInfo info; /* stats, reports and info data */ 1848 struct curl_tlssessioninfo tsi; /* Information about the TLS session, only 1849 valid after a client has asked for it */ 1850 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) 1851 iconv_t outbound_cd; /* for translating to the network encoding */ 1852 iconv_t inbound_cd; /* for translating from the network encoding */ 1853 iconv_t utf8_cd; /* for translating to UTF8 */ 1854 #endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */ 1855 unsigned int magic; /* set to a CURLEASY_MAGIC_NUMBER */ 1856 }; 1857 1858 #define LIBCURL_NAME "libcurl" 1859 1860 #endif /* HEADER_CURL_URLDATA_H */ 1861