1#ifndef HEADER_CURL_URLDATA_H 2#define HEADER_CURL_URLDATA_H 3/*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2016, 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 72#define DEFAULT_CONNCACHE_SIZE 5 73 74/* length of longest IPv6 address string including the trailing null */ 75#define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") 76 77/* Default FTP/IMAP etc response timeout in milliseconds. 78 Symbian OS panics when given a timeout much greater than 1/2 hour. 79*/ 80#define RESP_TIMEOUT (1800*1000) 81 82#include "cookie.h" 83#include "formdata.h" 84 85#ifdef USE_OPENSSL 86#include <openssl/ssl.h> 87#ifdef HAVE_OPENSSL_ENGINE_H 88#include <openssl/engine.h> 89#endif 90#endif /* USE_OPENSSL */ 91 92#ifdef USE_GNUTLS 93#include <gnutls/gnutls.h> 94#endif 95 96#ifdef USE_MBEDTLS 97 98#include <mbedtls/ssl.h> 99#include <mbedtls/version.h> 100#include <mbedtls/entropy.h> 101#include <mbedtls/ctr_drbg.h> 102 103#elif defined USE_POLARSSL 104 105#include <polarssl/ssl.h> 106#include <polarssl/version.h> 107#if POLARSSL_VERSION_NUMBER<0x01010000 108#include <polarssl/havege.h> 109#else 110#include <polarssl/entropy.h> 111#include <polarssl/ctr_drbg.h> 112#endif /* POLARSSL_VERSION_NUMBER<0x01010000 */ 113 114#endif /* USE_POLARSSL */ 115 116#ifdef USE_CYASSL 117#undef OCSP_REQUEST /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */ 118#undef OCSP_RESPONSE /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */ 119#include <cyassl/openssl/ssl.h> 120#endif 121 122#ifdef USE_NSS 123#include <nspr.h> 124#include <pk11pub.h> 125#endif 126 127#ifdef USE_GSKIT 128#include <gskssl.h> 129#endif 130 131#ifdef USE_AXTLS 132#include <axTLS/config.h> 133#include <axTLS/ssl.h> 134#undef malloc 135#undef calloc 136#undef realloc 137#endif /* USE_AXTLS */ 138 139#ifdef USE_SCHANNEL 140#include "curl_sspi.h" 141#include <schnlsp.h> 142#include <schannel.h> 143#endif 144 145#ifdef USE_DARWINSSL 146#include <Security/Security.h> 147/* For some reason, when building for iOS, the omnibus header above does 148 * not include SecureTransport.h as of iOS SDK 5.1. */ 149#include <Security/SecureTransport.h> 150#endif 151 152#ifdef HAVE_NETINET_IN_H 153#include <netinet/in.h> 154#endif 155 156#include "timeval.h" 157 158#ifdef HAVE_ZLIB_H 159#include <zlib.h> /* for content-encoding */ 160#ifdef __SYMBIAN32__ 161/* zlib pollutes the namespace with this definition */ 162#undef WIN32 163#endif 164#endif 165 166#include <curl/curl.h> 167 168#include "http_chunks.h" /* for the structs and enum stuff */ 169#include "hostip.h" 170#include "hash.h" 171#include "splay.h" 172 173#include "imap.h" 174#include "pop3.h" 175#include "smtp.h" 176#include "ftp.h" 177#include "file.h" 178#include "ssh.h" 179#include "http.h" 180#include "rtsp.h" 181#include "smb.h" 182#include "wildcard.h" 183#include "multihandle.h" 184 185#ifdef HAVE_GSSAPI 186# ifdef HAVE_GSSGNU 187# include <gss.h> 188# elif defined HAVE_GSSMIT 189# include <gssapi/gssapi.h> 190# include <gssapi/gssapi_generic.h> 191# else 192# include <gssapi.h> 193# endif 194#endif 195 196#ifdef HAVE_LIBSSH2_H 197#include <libssh2.h> 198#include <libssh2_sftp.h> 199#endif /* HAVE_LIBSSH2_H */ 200 201/* Download buffer size, keep it fairly big for speed reasons */ 202#undef BUFSIZE 203#define BUFSIZE CURL_MAX_WRITE_SIZE 204 205/* Initial size of the buffer to store headers in, it'll be enlarged in case 206 of need. */ 207#define HEADERSIZE 256 208 209#define CURLEASY_MAGIC_NUMBER 0xc0dedbadU 210#define GOOD_EASY_HANDLE(x) \ 211 ((x) && ((x)->magic == CURLEASY_MAGIC_NUMBER)) 212 213/* Some convenience macros to get the larger/smaller value out of two given. 214 We prefix with CURL to prevent name collisions. */ 215#define CURLMAX(x,y) ((x)>(y)?(x):(y)) 216#define CURLMIN(x,y) ((x)<(y)?(x):(y)) 217 218#ifdef HAVE_GSSAPI 219/* Types needed for krb5-ftp connections */ 220struct krb5buffer { 221 void *data; 222 size_t size; 223 size_t index; 224 int eof_flag; 225}; 226 227enum protection_level { 228 PROT_NONE, /* first in list */ 229 PROT_CLEAR, 230 PROT_SAFE, 231 PROT_CONFIDENTIAL, 232 PROT_PRIVATE, 233 PROT_CMD, 234 PROT_LAST /* last in list */ 235}; 236#endif 237 238#ifdef USE_SCHANNEL 239/* Structs to store Schannel handles */ 240struct curl_schannel_cred { 241 CredHandle cred_handle; 242 TimeStamp time_stamp; 243 int refcount; 244}; 245 246struct curl_schannel_ctxt { 247 CtxtHandle ctxt_handle; 248 TimeStamp time_stamp; 249}; 250#endif 251 252/* enum for the nonblocking SSL connection state machine */ 253typedef enum { 254 ssl_connect_1, 255 ssl_connect_2, 256 ssl_connect_2_reading, 257 ssl_connect_2_writing, 258 ssl_connect_3, 259 ssl_connect_done 260} ssl_connect_state; 261 262typedef enum { 263 ssl_connection_none, 264 ssl_connection_negotiating, 265 ssl_connection_complete 266} ssl_connection_state; 267 268/* struct for data related to each SSL connection */ 269struct ssl_connect_data { 270 /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm 271 but at least asked to or meaning to use it. See 'state' for the exact 272 current state of the connection. */ 273 bool use; 274 ssl_connection_state state; 275 ssl_connect_state connecting_state; 276#if defined(USE_OPENSSL) 277 /* these ones requires specific SSL-types */ 278 SSL_CTX* ctx; 279 SSL* handle; 280 X509* server_cert; 281#elif defined(USE_GNUTLS) 282 gnutls_session_t session; 283 gnutls_certificate_credentials_t cred; 284#ifdef USE_TLS_SRP 285 gnutls_srp_client_credentials_t srp_client_cred; 286#endif 287#elif defined(USE_MBEDTLS) 288 mbedtls_ctr_drbg_context ctr_drbg; 289 mbedtls_entropy_context entropy; 290 mbedtls_ssl_context ssl; 291 int server_fd; 292 mbedtls_x509_crt cacert; 293 mbedtls_x509_crt clicert; 294 mbedtls_x509_crl crl; 295 mbedtls_pk_context pk; 296 mbedtls_ssl_config config; 297 const char *protocols[3]; 298#elif defined(USE_POLARSSL) 299 ctr_drbg_context ctr_drbg; 300 entropy_context entropy; 301 ssl_context ssl; 302 int server_fd; 303 x509_crt cacert; 304 x509_crt clicert; 305 x509_crl crl; 306 rsa_context rsa; 307#elif defined(USE_CYASSL) 308 SSL_CTX* ctx; 309 SSL* handle; 310#elif defined(USE_NSS) 311 PRFileDesc *handle; 312 char *client_nickname; 313 struct Curl_easy *data; 314 struct curl_llist *obj_list; 315 PK11GenericObject *obj_clicert; 316#elif defined(USE_GSKIT) 317 gsk_handle handle; 318 int iocport; 319#elif defined(USE_AXTLS) 320 SSL_CTX* ssl_ctx; 321 SSL* ssl; 322#elif defined(USE_SCHANNEL) 323 struct curl_schannel_cred *cred; 324 struct curl_schannel_ctxt *ctxt; 325 SecPkgContext_StreamSizes stream_sizes; 326 size_t encdata_length, decdata_length; 327 size_t encdata_offset, decdata_offset; 328 unsigned char *encdata_buffer, *decdata_buffer; 329 unsigned long req_flags, ret_flags; 330 CURLcode recv_unrecoverable_err; /* schannel_recv had an unrecoverable err */ 331 bool recv_sspi_close_notify; /* true if connection closed by close_notify */ 332 bool recv_connection_closed; /* true if connection closed, regardless how */ 333#elif defined(USE_DARWINSSL) 334 SSLContextRef ssl_ctx; 335 curl_socket_t ssl_sockfd; 336 bool ssl_direction; /* true if writing, false if reading */ 337 size_t ssl_write_buffered_length; 338#elif defined(USE_SSL) 339#error "SSL backend specific information missing from ssl_connect_data" 340#endif 341}; 342 343struct ssl_config_data { 344 long version; /* what version the client wants to use */ 345 long certverifyresult; /* result from the certificate verification */ 346 347 bool verifypeer; /* set TRUE if this is desired */ 348 bool verifyhost; /* set TRUE if CN/SAN must match hostname */ 349 bool verifystatus; /* set TRUE if certificate status must be checked */ 350 char *CApath; /* certificate dir (doesn't work on windows) */ 351 char *CAfile; /* certificate to verify peer against */ 352 const char *CRLfile; /* CRL to check certificate revocation */ 353 const char *issuercert;/* optional issuer certificate filename */ 354 char *clientcert; 355 char *random_file; /* path to file containing "random" data */ 356 char *egdsocket; /* path to file containing the EGD daemon socket */ 357 char *cipher_list; /* list of ciphers to use */ 358 size_t max_ssl_sessions; /* SSL session id cache size */ 359 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */ 360 void *fsslctxp; /* parameter for call back */ 361 bool sessionid; /* cache session IDs or not */ 362 bool certinfo; /* gather lots of certificate info */ 363 bool falsestart; 364 365#ifdef USE_TLS_SRP 366 char *username; /* TLS username (for, e.g., SRP) */ 367 char *password; /* TLS password (for, e.g., SRP) */ 368 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */ 369#endif 370}; 371 372/* information stored about one single SSL session */ 373struct curl_ssl_session { 374 char *name; /* host name for which this ID was used */ 375 char *conn_to_host; /* host name for the connection (may be NULL) */ 376 void *sessionid; /* as returned from the SSL layer */ 377 size_t idsize; /* if known, otherwise 0 */ 378 long age; /* just a number, the higher the more recent */ 379 int remote_port; /* remote port */ 380 int conn_to_port; /* remote port for the connection (may be -1) */ 381 struct ssl_config_data ssl_config; /* setup for this session */ 382}; 383 384/* Struct used for Digest challenge-response authentication */ 385struct digestdata { 386#if defined(USE_WINDOWS_SSPI) 387 BYTE *input_token; 388 size_t input_token_len; 389#else 390 char *nonce; 391 char *cnonce; 392 char *realm; 393 int algo; 394 bool stale; /* set true for re-negotiation */ 395 char *opaque; 396 char *qop; 397 char *algorithm; 398 int nc; /* nounce count */ 399#endif 400}; 401 402typedef enum { 403 NTLMSTATE_NONE, 404 NTLMSTATE_TYPE1, 405 NTLMSTATE_TYPE2, 406 NTLMSTATE_TYPE3, 407 NTLMSTATE_LAST 408} curlntlm; 409 410#ifdef USE_WINDOWS_SSPI 411#include "curl_sspi.h" 412#endif 413 414#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) 415#include <iconv.h> 416#endif 417 418/* Struct used for GSSAPI (Kerberos V5) authentication */ 419#if defined(USE_KERBEROS5) 420struct kerberos5data { 421#if defined(USE_WINDOWS_SSPI) 422 CredHandle *credentials; 423 CtxtHandle *context; 424 TCHAR *spn; 425 SEC_WINNT_AUTH_IDENTITY identity; 426 SEC_WINNT_AUTH_IDENTITY *p_identity; 427 size_t token_max; 428 BYTE *output_token; 429#else 430 gss_ctx_id_t context; 431 gss_name_t spn; 432#endif 433}; 434#endif 435 436/* Struct used for NTLM challenge-response authentication */ 437#if defined(USE_NTLM) 438struct ntlmdata { 439 curlntlm state; 440#ifdef USE_WINDOWS_SSPI 441 CredHandle *credentials; 442 CtxtHandle *context; 443 SEC_WINNT_AUTH_IDENTITY identity; 444 SEC_WINNT_AUTH_IDENTITY *p_identity; 445 size_t token_max; 446 BYTE *output_token; 447 BYTE *input_token; 448 size_t input_token_len; 449#else 450 unsigned int flags; 451 unsigned char nonce[8]; 452 void* target_info; /* TargetInfo received in the ntlm type-2 message */ 453 unsigned int target_info_len; 454#endif 455}; 456#endif 457 458#ifdef USE_SPNEGO 459struct negotiatedata { 460 /* When doing Negotiate (SPNEGO) auth, we first need to send a token 461 and then validate the received one. */ 462 enum { GSS_AUTHNONE, GSS_AUTHRECV, GSS_AUTHSENT } state; 463#ifdef HAVE_GSSAPI 464 OM_uint32 status; 465 gss_ctx_id_t context; 466 gss_name_t spn; 467 gss_buffer_desc output_token; 468#else 469#ifdef USE_WINDOWS_SSPI 470 DWORD status; 471 CredHandle *credentials; 472 CtxtHandle *context; 473 SEC_WINNT_AUTH_IDENTITY identity; 474 SEC_WINNT_AUTH_IDENTITY *p_identity; 475 TCHAR *spn; 476 size_t token_max; 477 BYTE *output_token; 478 size_t output_token_length; 479#endif 480#endif 481}; 482#endif 483 484 485/* 486 * Boolean values that concerns this connection. 487 */ 488struct ConnectBits { 489 /* always modify bits.close with the connclose() and connkeep() macros! */ 490 bool close; /* if set, we close the connection after this request */ 491 bool reuse; /* if set, this is a re-used connection */ 492 bool conn_to_host; /* if set, this connection has a "connect to host" 493 that overrides the host in the URL */ 494 bool conn_to_port; /* if set, this connection has a "connect to port" 495 that overrides the port in the URL (remote port) */ 496 bool proxy; /* if set, this transfer is done through a proxy - any type */ 497 bool httpproxy; /* if set, this transfer is done through a http proxy */ 498 bool user_passwd; /* do we use user+password for this connection? */ 499 bool proxy_user_passwd; /* user+password for the proxy? */ 500 bool ipv6_ip; /* we communicate with a remote site specified with pure IPv6 501 IP address */ 502 bool ipv6; /* we communicate with a site using an IPv6 address */ 503 504 bool do_more; /* this is set TRUE if the ->curl_do_more() function is 505 supposed to be called, after ->curl_do() */ 506 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set 507 the first time on the first connect function call */ 508 bool protoconnstart;/* the protocol layer has STARTED its operation after 509 the TCP layer connect */ 510 511 bool retry; /* this connection is about to get closed and then 512 re-attempted at another connection. */ 513 bool tunnel_proxy; /* if CONNECT is used to "tunnel" through the proxy. 514 This is implicit when SSL-protocols are used through 515 proxies, but can also be enabled explicitly by 516 apps */ 517 bool authneg; /* TRUE when the auth phase has started, which means 518 that we are creating a request with an auth header, 519 but it is not the final request in the auth 520 negotiation. */ 521 bool rewindaftersend;/* TRUE when the sending couldn't be stopped even 522 though it will be discarded. When the whole send 523 operation is done, we must call the data rewind 524 callback. */ 525 bool ftp_use_epsv; /* As set with CURLOPT_FTP_USE_EPSV, but if we find out 526 EPSV doesn't work we disable it for the forthcoming 527 requests */ 528 529 bool ftp_use_eprt; /* As set with CURLOPT_FTP_USE_EPRT, but if we find out 530 EPRT doesn't work we disable it for the forthcoming 531 requests */ 532 bool netrc; /* name+password provided by netrc */ 533 bool userpwd_in_url; /* name+password found in url */ 534 bool stream_was_rewound; /* Indicates that the stream was rewound after a 535 request read past the end of its response byte 536 boundary */ 537 bool proxy_connect_closed; /* set true if a proxy disconnected the 538 connection in a CONNECT request with auth, so 539 that libcurl should reconnect and continue. */ 540 bool bound; /* set true if bind() has already been done on this socket/ 541 connection */ 542 bool type_set; /* type= was used in the URL */ 543 bool multiplex; /* connection is multiplexed */ 544 545 bool tcp_fastopen; /* use TCP Fast Open */ 546 bool tls_enable_npn; /* TLS NPN extension? */ 547 bool tls_enable_alpn; /* TLS ALPN extension? */ 548}; 549 550struct hostname { 551 char *rawalloc; /* allocated "raw" version of the name */ 552 char *encalloc; /* allocated IDN-encoded version of the name */ 553 char *name; /* name to use internally, might be encoded, might be raw */ 554 const char *dispname; /* name to display, as 'name' might be encoded */ 555}; 556 557/* 558 * Flags on the keepon member of the Curl_transfer_keeper 559 */ 560 561#define KEEP_NONE 0 562#define KEEP_RECV (1<<0) /* there is or may be data to read */ 563#define KEEP_SEND (1<<1) /* there is or may be data to write */ 564#define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there 565 might still be data to read */ 566#define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there 567 might still be data to write */ 568#define KEEP_RECV_PAUSE (1<<4) /* reading is paused */ 569#define KEEP_SEND_PAUSE (1<<5) /* writing is paused */ 570 571#define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE) 572#define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE) 573 574 575#ifdef HAVE_LIBZ 576typedef enum { 577 ZLIB_UNINIT, /* uninitialized */ 578 ZLIB_INIT, /* initialized */ 579 ZLIB_GZIP_HEADER, /* reading gzip header */ 580 ZLIB_GZIP_INFLATING, /* inflating gzip stream */ 581 ZLIB_INIT_GZIP /* initialized in transparent gzip mode */ 582} zlibInitState; 583#endif 584 585#ifdef CURLRES_ASYNCH 586struct Curl_async { 587 char *hostname; 588 int port; 589 struct Curl_dns_entry *dns; 590 bool done; /* set TRUE when the lookup is complete */ 591 int status; /* if done is TRUE, this is the status from the callback */ 592 void *os_specific; /* 'struct thread_data' for Windows */ 593}; 594#endif 595 596#define FIRSTSOCKET 0 597#define SECONDARYSOCKET 1 598 599/* These function pointer types are here only to allow easier typecasting 600 within the source when we need to cast between data pointers (such as NULL) 601 and function pointers. */ 602typedef CURLcode (*Curl_do_more_func)(struct connectdata *, int *); 603typedef CURLcode (*Curl_done_func)(struct connectdata *, CURLcode, bool); 604 605enum expect100 { 606 EXP100_SEND_DATA, /* enough waiting, just send the body now */ 607 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */ 608 EXP100_SENDING_REQUEST, /* still sending the request but will wait for 609 the 100 header once done with the request */ 610 EXP100_FAILED /* used on 417 Expectation Failed */ 611}; 612 613enum upgrade101 { 614 UPGR101_INIT, /* default state */ 615 UPGR101_REQUESTED, /* upgrade requested */ 616 UPGR101_RECEIVED, /* response received */ 617 UPGR101_WORKING /* talking upgraded protocol */ 618}; 619 620/* 621 * Request specific data in the easy handle (Curl_easy). Previously, 622 * these members were on the connectdata struct but since a conn struct may 623 * now be shared between different Curl_easys, we store connection-specific 624 * data here. This struct only keeps stuff that's interesting for *this* 625 * request, as it will be cleared between multiple ones 626 */ 627struct SingleRequest { 628 curl_off_t size; /* -1 if unknown at this point */ 629 curl_off_t *bytecountp; /* return number of bytes read or NULL */ 630 631 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch, 632 -1 means unlimited */ 633 curl_off_t *writebytecountp; /* return number of bytes written or NULL */ 634 635 curl_off_t bytecount; /* total number of bytes read */ 636 curl_off_t writebytecount; /* number of bytes written */ 637 638 long headerbytecount; /* only count received headers */ 639 long deductheadercount; /* this amount of bytes doesn't count when we check 640 if anything has been transferred at the end of a 641 connection. We use this counter to make only a 642 100 reply (without a following second response 643 code) result in a CURLE_GOT_NOTHING error code */ 644 645 struct timeval start; /* transfer started at this time */ 646 struct timeval now; /* current time */ 647 bool header; /* incoming data has HTTP header */ 648 enum { 649 HEADER_NORMAL, /* no bad header at all */ 650 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest 651 is normal data */ 652 HEADER_ALLBAD /* all was believed to be header */ 653 } badheader; /* the header was deemed bad and will be 654 written as body */ 655 int headerline; /* counts header lines to better track the 656 first one */ 657 char *hbufp; /* points at *end* of header line */ 658 size_t hbuflen; 659 char *str; /* within buf */ 660 char *str_start; /* within buf */ 661 char *end_ptr; /* within buf */ 662 char *p; /* within headerbuff */ 663 bool content_range; /* set TRUE if Content-Range: was found */ 664 curl_off_t offset; /* possible resume offset read from the 665 Content-Range: header */ 666 int httpcode; /* error code from the 'HTTP/1.? XXX' or 667 'RTSP/1.? XXX' line */ 668 struct timeval start100; /* time stamp to wait for the 100 code from */ 669 enum expect100 exp100; /* expect 100 continue state */ 670 enum upgrade101 upgr101; /* 101 upgrade state */ 671 672 int auto_decoding; /* What content encoding. sec 3.5, RFC2616. */ 673 674#define IDENTITY 0 /* No encoding */ 675#define DEFLATE 1 /* zlib deflate [RFC 1950 & 1951] */ 676#define GZIP 2 /* gzip algorithm [RFC 1952] */ 677 678#ifdef HAVE_LIBZ 679 zlibInitState zlib_init; /* possible zlib init state; 680 undefined if Content-Encoding header. */ 681 z_stream z; /* State structure for zlib. */ 682#endif 683 684 time_t timeofdoc; 685 long bodywrites; 686 687 char *buf; 688 char *uploadbuf; 689 curl_socket_t maxfd; 690 691 int keepon; 692 693 bool upload_done; /* set to TRUE when doing chunked transfer-encoding upload 694 and we're uploading the last chunk */ 695 696 bool ignorebody; /* we read a response-body but we ignore it! */ 697 bool ignorecl; /* This HTTP response has no body so we ignore the Content- 698 Length: header */ 699 700 char *location; /* This points to an allocated version of the Location: 701 header data */ 702 char *newurl; /* Set to the new URL to use when a redirect or a retry is 703 wanted */ 704 705 /* 'upload_present' is used to keep a byte counter of how much data there is 706 still left in the buffer, aimed for upload. */ 707 ssize_t upload_present; 708 709 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a 710 buffer, so the next read should read from where this pointer points to, 711 and the 'upload_present' contains the number of bytes available at this 712 position */ 713 char *upload_fromhere; 714 715 bool chunk; /* if set, this is a chunked transfer-encoding */ 716 bool upload_chunky; /* set TRUE if we are doing chunked transfer-encoding 717 on upload */ 718 bool getheader; /* TRUE if header parsing is wanted */ 719 720 bool forbidchunk; /* used only to explicitly forbid chunk-upload for 721 specific upload buffers. See readmoredata() in 722 http.c for details. */ 723 724 void *protop; /* Allocated protocol-specific data. Each protocol 725 handler makes sure this points to data it needs. */ 726}; 727 728/* 729 * Specific protocol handler. 730 */ 731 732struct Curl_handler { 733 const char * scheme; /* URL scheme name. */ 734 735 /* Complement to setup_connection_internals(). */ 736 CURLcode (*setup_connection)(struct connectdata *); 737 738 /* These two functions MUST be set to be protocol dependent */ 739 CURLcode (*do_it)(struct connectdata *, bool *done); 740 Curl_done_func done; 741 742 /* If the curl_do() function is better made in two halves, this 743 * curl_do_more() function will be called afterwards, if set. For example 744 * for doing the FTP stuff after the PASV/PORT command. 745 */ 746 Curl_do_more_func do_more; 747 748 /* This function *MAY* be set to a protocol-dependent function that is run 749 * after the connect() and everything is done, as a step in the connection. 750 * The 'done' pointer points to a bool that should be set to TRUE if the 751 * function completes before return. If it doesn't complete, the caller 752 * should call the curl_connecting() function until it is. 753 */ 754 CURLcode (*connect_it)(struct connectdata *, bool *done); 755 756 /* See above. Currently only used for FTP. */ 757 CURLcode (*connecting)(struct connectdata *, bool *done); 758 CURLcode (*doing)(struct connectdata *, bool *done); 759 760 /* Called from the multi interface during the PROTOCONNECT phase, and it 761 should then return a proper fd set */ 762 int (*proto_getsock)(struct connectdata *conn, 763 curl_socket_t *socks, 764 int numsocks); 765 766 /* Called from the multi interface during the DOING phase, and it should 767 then return a proper fd set */ 768 int (*doing_getsock)(struct connectdata *conn, 769 curl_socket_t *socks, 770 int numsocks); 771 772 /* Called from the multi interface during the DO_MORE phase, and it should 773 then return a proper fd set */ 774 int (*domore_getsock)(struct connectdata *conn, 775 curl_socket_t *socks, 776 int numsocks); 777 778 /* Called from the multi interface during the DO_DONE, PERFORM and 779 WAITPERFORM phases, and it should then return a proper fd set. Not setting 780 this will make libcurl use the generic default one. */ 781 int (*perform_getsock)(const struct connectdata *conn, 782 curl_socket_t *socks, 783 int numsocks); 784 785 /* This function *MAY* be set to a protocol-dependent function that is run 786 * by the curl_disconnect(), as a step in the disconnection. If the handler 787 * is called because the connection has been considered dead, dead_connection 788 * is set to TRUE. 789 */ 790 CURLcode (*disconnect)(struct connectdata *, bool dead_connection); 791 792 /* If used, this function gets called from transfer.c:readwrite_data() to 793 allow the protocol to do extra reads/writes */ 794 CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn, 795 ssize_t *nread, bool *readmore); 796 797 long defport; /* Default port. */ 798 unsigned int protocol; /* See CURLPROTO_* - this needs to be the single 799 specific protocol bit */ 800 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */ 801}; 802 803#define PROTOPT_NONE 0 /* nothing extra */ 804#define PROTOPT_SSL (1<<0) /* uses SSL */ 805#define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */ 806#define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */ 807/* some protocols will have to call the underlying functions without regard to 808 what exact state the socket signals. IE even if the socket says "readable", 809 the send function might need to be called while uploading, or vice versa. 810*/ 811#define PROTOPT_DIRLOCK (1<<3) 812#define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */ 813#define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it 814 gets a default */ 815#define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle 816 url query strings (?foo=bar) ! */ 817#define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login credentials per 818 request instead of per connection */ 819#define PROTOPT_ALPN_NPN (1<<8) /* set ALPN and/or NPN for this */ 820 821/* return the count of bytes sent, or -1 on error */ 822typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */ 823 int sockindex, /* socketindex */ 824 const void *buf, /* data to write */ 825 size_t len, /* max amount to write */ 826 CURLcode *err); /* error to return */ 827 828/* return the count of bytes read, or -1 on error */ 829typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */ 830 int sockindex, /* socketindex */ 831 char *buf, /* store data here */ 832 size_t len, /* max amount to read */ 833 CURLcode *err); /* error to return */ 834 835#ifdef USE_RECV_BEFORE_SEND_WORKAROUND 836struct postponed_data { 837 char *buffer; /* Temporal store for received data during 838 sending, must be freed */ 839 size_t allocated_size; /* Size of temporal store */ 840 size_t recv_size; /* Size of received data during sending */ 841 size_t recv_processed; /* Size of processed part of postponed data */ 842#ifdef DEBUGBUILD 843 curl_socket_t bindsock;/* Structure must be bound to specific socket, 844 used only for DEBUGASSERT */ 845#endif /* DEBUGBUILD */ 846}; 847#endif /* USE_RECV_BEFORE_SEND_WORKAROUND */ 848 849/* 850 * The connectdata struct contains all fields and variables that should be 851 * unique for an entire connection. 852 */ 853struct connectdata { 854 /* 'data' is the CURRENT Curl_easy using this connection -- take great 855 caution that this might very well vary between different times this 856 connection is used! */ 857 struct Curl_easy *data; 858 859 /* chunk is for HTTP chunked encoding, but is in the general connectdata 860 struct only because we can do just about any protocol through a HTTP proxy 861 and a HTTP proxy may in fact respond using chunked encoding */ 862 struct Curl_chunker chunk; 863 864 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */ 865 void *closesocket_client; 866 867 bool inuse; /* This is a marker for the connection cache logic. If this is 868 TRUE this handle is being used by an easy handle and cannot 869 be used by any other easy handle without careful 870 consideration (== only for pipelining). */ 871 872 /**** Fields set when inited and not modified again */ 873 long connection_id; /* Contains a unique number to make it easier to 874 track the connections in the log output */ 875 876 /* 'dns_entry' is the particular host we use. This points to an entry in the 877 DNS cache and it will not get pruned while locked. It gets unlocked in 878 Curl_done(). This entry will be NULL if the connection is re-used as then 879 there is no name resolve done. */ 880 struct Curl_dns_entry *dns_entry; 881 882 /* 'ip_addr' is the particular IP we connected to. It points to a struct 883 within the DNS cache, so this pointer is only valid as long as the DNS 884 cache entry remains locked. It gets unlocked in Curl_done() */ 885 Curl_addrinfo *ip_addr; 886 Curl_addrinfo *tempaddr[2]; /* for happy eyeballs */ 887 888 /* 'ip_addr_str' is the ip_addr data as a human readable string. 889 It remains available as long as the connection does, which is longer than 890 the ip_addr itself. */ 891 char ip_addr_str[MAX_IPADR_LEN]; 892 893 unsigned int scope_id; /* Scope id for IPv6 */ 894 895 int socktype; /* SOCK_STREAM or SOCK_DGRAM */ 896 897 struct hostname host; 898 struct hostname conn_to_host; /* the host to connect to. valid only if 899 bits.conn_to_host is set */ 900 struct hostname proxy; 901 902 long port; /* which port to use locally */ 903 int remote_port; /* the remote port, not the proxy port! */ 904 int conn_to_port; /* the remote port to connect to. valid only if 905 bits.conn_to_port is set */ 906 907 /* 'primary_ip' and 'primary_port' get filled with peer's numerical 908 ip address and port number whenever an outgoing connection is 909 *attempted* from the primary socket to a remote address. When more 910 than one address is tried for a connection these will hold data 911 for the last attempt. When the connection is actually established 912 these are updated with data which comes directly from the socket. */ 913 914 char primary_ip[MAX_IPADR_LEN]; 915 long primary_port; 916 917 /* 'local_ip' and 'local_port' get filled with local's numerical 918 ip address and port number whenever an outgoing connection is 919 **established** from the primary socket to a remote address. */ 920 921 char local_ip[MAX_IPADR_LEN]; 922 long local_port; 923 924 char *user; /* user name string, allocated */ 925 char *passwd; /* password string, allocated */ 926 char *options; /* options string, allocated */ 927 928 char *oauth_bearer; /* bearer token for OAuth 2.0, allocated */ 929 930 char *proxyuser; /* proxy user name string, allocated */ 931 char *proxypasswd; /* proxy password string, allocated */ 932 curl_proxytype proxytype; /* what kind of proxy that is in use */ 933 934 int httpversion; /* the HTTP version*10 reported by the server */ 935 int rtspversion; /* the RTSP version*10 reported by the server */ 936 937 struct timeval now; /* "current" time */ 938 struct timeval created; /* creation time */ 939 curl_socket_t sock[2]; /* two sockets, the second is used for the data 940 transfer when doing FTP */ 941 curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */ 942 bool sock_accepted[2]; /* TRUE if the socket on this index was created with 943 accept() */ 944 Curl_recv *recv[2]; 945 Curl_send *send[2]; 946 947#ifdef USE_RECV_BEFORE_SEND_WORKAROUND 948 struct postponed_data postponed[2]; /* two buffers for two sockets */ 949#endif /* USE_RECV_BEFORE_SEND_WORKAROUND */ 950 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */ 951 struct ssl_config_data ssl_config; 952 bool tls_upgraded; 953 954 struct ConnectBits bits; /* various state-flags for this connection */ 955 956 /* connecttime: when connect() is called on the current IP address. Used to 957 be able to track when to move on to try next IP - but only when the multi 958 interface is used. */ 959 struct timeval connecttime; 960 /* The two fields below get set in Curl_connecthost */ 961 int num_addr; /* number of addresses to try to connect to */ 962 long timeoutms_per_addr; /* how long time in milliseconds to spend on 963 trying to connect to each IP address */ 964 965 const struct Curl_handler *handler; /* Connection's protocol handler */ 966 const struct Curl_handler *given; /* The protocol first given */ 967 968 long ip_version; /* copied from the Curl_easy at creation time */ 969 970 /**** curl_get() phase fields */ 971 972 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */ 973 curl_socket_t writesockfd; /* socket to write to, it may very 974 well be the same we read from. 975 CURL_SOCKET_BAD disables */ 976 977 /** Dynamicly allocated strings, MUST be freed before this **/ 978 /** struct is killed. **/ 979 struct dynamically_allocated_data { 980 char *proxyuserpwd; 981 char *uagent; 982 char *accept_encoding; 983 char *userpwd; 984 char *rangeline; 985 char *ref; 986 char *host; 987 char *cookiehost; 988 char *rtsp_transport; 989 char *te; /* TE: request header */ 990 } allocptr; 991 992#ifdef HAVE_GSSAPI 993 int sec_complete; /* if Kerberos is enabled for this connection */ 994 enum protection_level command_prot; 995 enum protection_level data_prot; 996 enum protection_level request_data_prot; 997 size_t buffer_size; 998 struct krb5buffer in_buffer; 999 void *app_data; 1000 const struct Curl_sec_client_mech *mech; 1001 struct sockaddr_in local_addr; 1002#endif 1003 1004#if defined(USE_KERBEROS5) /* Consider moving some of the above GSS-API */ 1005 struct kerberos5data krb5; /* variables into the structure definition, */ 1006#endif /* however, some of them are ftp specific. */ 1007 1008 /* the two following *_inuse fields are only flags, not counters in any way. 1009 If TRUE it means the channel is in use, and if FALSE it means the channel 1010 is up for grabs by one. */ 1011 1012 bool readchannel_inuse; /* whether the read channel is in use by an easy 1013 handle */ 1014 bool writechannel_inuse; /* whether the write channel is in use by an easy 1015 handle */ 1016 struct curl_llist *send_pipe; /* List of handles waiting to 1017 send on this pipeline */ 1018 struct curl_llist *recv_pipe; /* List of handles waiting to read 1019 their responses on this pipeline */ 1020 char* master_buffer; /* The master buffer allocated on-demand; 1021 used for pipelining. */ 1022 size_t read_pos; /* Current read position in the master buffer */ 1023 size_t buf_len; /* Length of the buffer?? */ 1024 1025 1026 curl_seek_callback seek_func; /* function that seeks the input */ 1027 void *seek_client; /* pointer to pass to the seek() above */ 1028 1029 /*************** Request - specific items ************/ 1030 1031#if defined(USE_NTLM) 1032 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes 1033 because it authenticates connections, not 1034 single requests! */ 1035 struct ntlmdata proxyntlm; /* NTLM data for proxy */ 1036 1037#if defined(NTLM_WB_ENABLED) 1038 /* used for communication with Samba's winbind daemon helper ntlm_auth */ 1039 curl_socket_t ntlm_auth_hlpr_socket; 1040 pid_t ntlm_auth_hlpr_pid; 1041 char* challenge_header; 1042 char* response_header; 1043#endif 1044#endif 1045 1046 char syserr_buf [256]; /* buffer for Curl_strerror() */ 1047 1048#ifdef CURLRES_ASYNCH 1049 /* data used for the asynch name resolve callback */ 1050 struct Curl_async async; 1051#endif 1052 1053 /* These three are used for chunked-encoding trailer support */ 1054 char *trailer; /* allocated buffer to store trailer in */ 1055 int trlMax; /* allocated buffer size */ 1056 int trlPos; /* index of where to store data */ 1057 1058 union { 1059 struct ftp_conn ftpc; 1060 struct http_conn httpc; 1061 struct ssh_conn sshc; 1062 struct tftp_state_data *tftpc; 1063 struct imap_conn imapc; 1064 struct pop3_conn pop3c; 1065 struct smtp_conn smtpc; 1066 struct rtsp_conn rtspc; 1067 struct smb_conn smbc; 1068 void *generic; /* RTMP and LDAP use this */ 1069 } proto; 1070 1071 int cselect_bits; /* bitmask of socket events */ 1072 int waitfor; /* current READ/WRITE bits to wait for */ 1073 1074#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1075 int socks5_gssapi_enctype; 1076#endif 1077 1078 bool verifypeer; 1079 bool verifyhost; 1080 1081 /* When this connection is created, store the conditions for the local end 1082 bind. This is stored before the actual bind and before any connection is 1083 made and will serve the purpose of being used for comparison reasons so 1084 that subsequent bound-requested connections aren't accidentally re-using 1085 wrong connections. */ 1086 char *localdev; 1087 unsigned short localport; 1088 int localportrange; 1089 1090 /* tunnel as in tunnel through a HTTP proxy with CONNECT */ 1091 enum { 1092 TUNNEL_INIT, /* init/default/no tunnel state */ 1093 TUNNEL_CONNECT, /* CONNECT has been sent off */ 1094 TUNNEL_COMPLETE /* CONNECT response received completely */ 1095 } tunnel_state[2]; /* two separate ones to allow FTP */ 1096 struct connectbundle *bundle; /* The bundle we are member of */ 1097 1098 int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */ 1099}; 1100 1101/* The end of connectdata. */ 1102 1103/* 1104 * Struct to keep statistical and informational data. 1105 */ 1106struct PureInfo { 1107 int httpcode; /* Recent HTTP, FTP, or RTSP response code */ 1108 int httpproxycode; /* response code from proxy when received separate */ 1109 int httpversion; /* the http version number X.Y = X*10+Y */ 1110 long filetime; /* If requested, this is might get set. Set to -1 if the time 1111 was unretrievable. We cannot have this of type time_t, 1112 since time_t is unsigned on several platforms such as 1113 OpenVMS. */ 1114 bool timecond; /* set to TRUE if the time condition didn't match, which 1115 thus made the document NOT get fetched */ 1116 long header_size; /* size of read header(s) in bytes */ 1117 long request_size; /* the amount of bytes sent in the request(s) */ 1118 unsigned long proxyauthavail; /* what proxy auth types were announced */ 1119 unsigned long httpauthavail; /* what host auth types were announced */ 1120 long numconnects; /* how many new connection did libcurl created */ 1121 char *contenttype; /* the content type of the object */ 1122 char *wouldredirect; /* URL this would've been redirected to if asked to */ 1123 1124 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip' 1125 and, 'conn_local_port' are copied over from the connectdata struct in 1126 order to allow curl_easy_getinfo() to return this information even when 1127 the session handle is no longer associated with a connection, and also 1128 allow curl_easy_reset() to clear this information from the session handle 1129 without disturbing information which is still alive, and that might be 1130 reused, in the connection cache. */ 1131 1132 char conn_primary_ip[MAX_IPADR_LEN]; 1133 long conn_primary_port; 1134 1135 char conn_local_ip[MAX_IPADR_LEN]; 1136 long conn_local_port; 1137 1138 struct curl_certinfo certs; /* info about the certs, only populated in 1139 OpenSSL builds. Asked for with 1140 CURLOPT_CERTINFO / CURLINFO_CERTINFO */ 1141}; 1142 1143 1144struct Progress { 1145 long lastshow; /* time() of the last displayed progress meter or NULL to 1146 force redraw at next call */ 1147 curl_off_t size_dl; /* total expected size */ 1148 curl_off_t size_ul; /* total expected size */ 1149 curl_off_t downloaded; /* transferred so far */ 1150 curl_off_t uploaded; /* transferred so far */ 1151 1152 curl_off_t current_speed; /* uses the currently fastest transfer */ 1153 1154 bool callback; /* set when progress callback is used */ 1155 int width; /* screen width at download start */ 1156 int flags; /* see progress.h */ 1157 1158 double timespent; 1159 1160 curl_off_t dlspeed; 1161 curl_off_t ulspeed; 1162 1163 double t_nslookup; 1164 double t_connect; 1165 double t_appconnect; 1166 double t_pretransfer; 1167 double t_starttransfer; 1168 double t_redirect; 1169 1170 struct timeval start; 1171 struct timeval t_startsingle; 1172 struct timeval t_startop; 1173 struct timeval t_acceptdata; 1174#define CURR_TIME (5+1) /* 6 entries for 5 seconds */ 1175 1176 curl_off_t speeder[ CURR_TIME ]; 1177 struct timeval speeder_time[ CURR_TIME ]; 1178 int speeder_c; 1179}; 1180 1181typedef enum { 1182 HTTPREQ_NONE, /* first in list */ 1183 HTTPREQ_GET, 1184 HTTPREQ_POST, 1185 HTTPREQ_POST_FORM, /* we make a difference internally */ 1186 HTTPREQ_PUT, 1187 HTTPREQ_HEAD, 1188 HTTPREQ_CUSTOM, 1189 HTTPREQ_LAST /* last in list */ 1190} Curl_HttpReq; 1191 1192typedef enum { 1193 RTSPREQ_NONE, /* first in list */ 1194 RTSPREQ_OPTIONS, 1195 RTSPREQ_DESCRIBE, 1196 RTSPREQ_ANNOUNCE, 1197 RTSPREQ_SETUP, 1198 RTSPREQ_PLAY, 1199 RTSPREQ_PAUSE, 1200 RTSPREQ_TEARDOWN, 1201 RTSPREQ_GET_PARAMETER, 1202 RTSPREQ_SET_PARAMETER, 1203 RTSPREQ_RECORD, 1204 RTSPREQ_RECEIVE, 1205 RTSPREQ_LAST /* last in list */ 1206} Curl_RtspReq; 1207 1208/* 1209 * Values that are generated, temporary or calculated internally for a 1210 * "session handle" must be defined within the 'struct UrlState'. This struct 1211 * will be used within the Curl_easy struct. When the 'Curl_easy' 1212 * struct is cloned, this data MUST NOT be copied. 1213 * 1214 * Remember that any "state" information goes globally for the curl handle. 1215 * Session-data MUST be put in the connectdata struct and here. */ 1216#define MAX_CURL_USER_LENGTH 256 1217#define MAX_CURL_PASSWORD_LENGTH 256 1218 1219struct auth { 1220 unsigned long want; /* Bitmask set to the authentication methods wanted by 1221 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */ 1222 unsigned long picked; 1223 unsigned long avail; /* Bitmask for what the server reports to support for 1224 this resource */ 1225 bool done; /* TRUE when the auth phase is done and ready to do the *actual* 1226 request */ 1227 bool multi; /* TRUE if this is not yet authenticated but within the auth 1228 multipass negotiation */ 1229 bool iestyle; /* TRUE if digest should be done IE-style or FALSE if it should 1230 be RFC compliant */ 1231}; 1232 1233struct UrlState { 1234 1235 /* Points to the connection cache */ 1236 struct conncache *conn_cache; 1237 1238 /* when curl_easy_perform() is called, the multi handle is "owned" by 1239 the easy handle so curl_easy_cleanup() on such an easy handle will 1240 also close the multi handle! */ 1241 bool multi_owned_by_easy; 1242 1243 /* buffers to store authentication data in, as parsed from input options */ 1244 struct timeval keeps_speed; /* for the progress meter really */ 1245 1246 struct connectdata *lastconnect; /* The last connection, NULL if undefined */ 1247 1248 char *headerbuff; /* allocated buffer to store headers in */ 1249 size_t headersize; /* size of the allocation */ 1250 1251 char buffer[BUFSIZE+1]; /* download buffer */ 1252 char uploadbuffer[BUFSIZE+1]; /* upload buffer */ 1253 curl_off_t current_speed; /* the ProgressShow() funcion sets this, 1254 bytes / second */ 1255 bool this_is_a_follow; /* this is a followed Location: request */ 1256 1257 char *first_host; /* host name of the first (not followed) request. 1258 if set, this should be the host name that we will 1259 sent authorization to, no else. Used to make Location: 1260 following not keep sending user+password... This is 1261 strdup() data. 1262 */ 1263 int first_remote_port; /* remote port of the first (not followed) request */ 1264 struct curl_ssl_session *session; /* array of 'max_ssl_sessions' size */ 1265 long sessionage; /* number of the most recent session */ 1266 char *tempwrite; /* allocated buffer to keep data in when a write 1267 callback returns to make the connection paused */ 1268 size_t tempwritesize; /* size of the 'tempwrite' allocated buffer */ 1269 int tempwritetype; /* type of the 'tempwrite' buffer as a bitmask that is 1270 used with Curl_client_write() */ 1271 char *scratch; /* huge buffer[BUFSIZE*2] when doing upload CRLF replacing */ 1272 bool errorbuf; /* Set to TRUE if the error buffer is already filled in. 1273 This must be set to FALSE every time _easy_perform() is 1274 called. */ 1275 int os_errno; /* filled in with errno whenever an error occurs */ 1276#ifdef HAVE_SIGNAL 1277 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */ 1278 void (*prev_signal)(int sig); 1279#endif 1280 bool allow_port; /* Is set.use_port allowed to take effect or not. This 1281 is always set TRUE when curl_easy_perform() is called. */ 1282 struct digestdata digest; /* state data for host Digest auth */ 1283 struct digestdata proxydigest; /* state data for proxy Digest auth */ 1284 1285#ifdef USE_SPNEGO 1286 struct negotiatedata negotiate; /* state data for host Negotiate auth */ 1287 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */ 1288#endif 1289 1290 struct auth authhost; /* auth details for host */ 1291 struct auth authproxy; /* auth details for proxy */ 1292 1293 bool authproblem; /* TRUE if there's some problem authenticating */ 1294 1295 void *resolver; /* resolver state, if it is used in the URL state - 1296 ares_channel f.e. */ 1297 1298#if defined(USE_OPENSSL) && defined(HAVE_OPENSSL_ENGINE_H) 1299 ENGINE *engine; 1300#endif /* USE_OPENSSL */ 1301 struct timeval expiretime; /* set this with Curl_expire() only */ 1302 struct Curl_tree timenode; /* for the splay stuff */ 1303 struct curl_llist *timeoutlist; /* list of pending timeouts */ 1304 1305 /* a place to store the most recently set FTP entrypath */ 1306 char *most_recent_ftp_entrypath; 1307 1308 /* set after initial USER failure, to prevent an authentication loop */ 1309 bool ftp_trying_alternative; 1310 1311 int httpversion; /* the lowest HTTP version*10 reported by any server 1312 involved in this request */ 1313 bool expect100header; /* TRUE if we added Expect: 100-continue */ 1314 1315 bool pipe_broke; /* TRUE if the connection we were pipelined on broke 1316 and we need to restart from the beginning */ 1317 1318#if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__) && \ 1319 !defined(__SYMBIAN32__) 1320/* do FTP line-end conversions on most platforms */ 1321#define CURL_DO_LINEEND_CONV 1322 /* for FTP downloads: track CRLF sequences that span blocks */ 1323 bool prev_block_had_trailing_cr; 1324 /* for FTP downloads: how many CRLFs did we converted to LFs? */ 1325 curl_off_t crlf_conversions; 1326#endif 1327 char *pathbuffer;/* allocated buffer to store the URL's path part in */ 1328 char *path; /* path to use, points to somewhere within the pathbuffer 1329 area */ 1330 bool slash_removed; /* set TRUE if the 'path' points to a path where the 1331 initial URL slash separator has been taken off */ 1332 bool use_range; 1333 bool rangestringalloc; /* the range string is malloc()'ed */ 1334 1335 char *range; /* range, if used. See README for detailed specification on 1336 this syntax. */ 1337 curl_off_t resume_from; /* continue [ftp] transfer from here */ 1338 1339 /* This RTSP state information survives requests and connections */ 1340 long rtsp_next_client_CSeq; /* the session's next client CSeq */ 1341 long rtsp_next_server_CSeq; /* the session's next server CSeq */ 1342 long rtsp_CSeq_recv; /* most recent CSeq received */ 1343 1344 curl_off_t infilesize; /* size of file to upload, -1 means unknown. 1345 Copied from set.filesize at start of operation */ 1346 1347 size_t drain; /* Increased when this stream has data to read, even if its 1348 socket is not necessarily is readable. Decreased when 1349 checked. */ 1350 bool done; /* set to FALSE when Curl_init_do() is called and set to TRUE 1351 when multi_done() is called, to prevent multi_done() to get 1352 invoked twice when the multi interface is used. */ 1353 1354 curl_read_callback fread_func; /* read callback/function */ 1355 void *in; /* CURLOPT_READDATA */ 1356 1357 struct Curl_easy *stream_depends_on; 1358 bool stream_depends_e; /* set or don't set the Exclusive bit */ 1359 int stream_weight; 1360}; 1361 1362 1363/* 1364 * This 'DynamicStatic' struct defines dynamic states that actually change 1365 * values in the 'UserDefined' area, which MUST be taken into consideration 1366 * if the UserDefined struct is cloned or similar. You can probably just 1367 * copy these, but each one indicate a special action on other data. 1368 */ 1369 1370struct DynamicStatic { 1371 char *url; /* work URL, copied from UserDefined */ 1372 bool url_alloc; /* URL string is malloc()'ed */ 1373 char *referer; /* referer string */ 1374 bool referer_alloc; /* referer sting is malloc()ed */ 1375 struct curl_slist *cookielist; /* list of cookie files set by 1376 curl_easy_setopt(COOKIEFILE) calls */ 1377 struct curl_slist *resolve; /* set to point to the set.resolve list when 1378 this should be dealt with in pretransfer */ 1379}; 1380 1381/* 1382 * This 'UserDefined' struct must only contain data that is set once to go 1383 * for many (perhaps) independent connections. Values that are generated or 1384 * calculated internally for the "session handle" MUST be defined within the 1385 * 'struct UrlState' instead. The only exceptions MUST note the changes in 1386 * the 'DynamicStatic' struct. 1387 * Character pointer fields point to dynamic storage, unless otherwise stated. 1388 */ 1389 1390struct Curl_multi; /* declared and used only in multi.c */ 1391 1392enum dupstring { 1393 STRING_CERT, /* client certificate file name */ 1394 STRING_CERT_TYPE, /* format for certificate (default: PEM)*/ 1395 STRING_COOKIE, /* HTTP cookie string to send */ 1396 STRING_COOKIEJAR, /* dump all cookies to this file */ 1397 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */ 1398 STRING_DEFAULT_PROTOCOL, /* Protocol to use when the URL doesn't specify */ 1399 STRING_DEVICE, /* local network interface/address to use */ 1400 STRING_ENCODING, /* Accept-Encoding string */ 1401 STRING_FTP_ACCOUNT, /* ftp account data */ 1402 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */ 1403 STRING_FTPPORT, /* port to send with the FTP PORT command */ 1404 STRING_KEY, /* private key file name */ 1405 STRING_KEY_PASSWD, /* plain text private key password */ 1406 STRING_KEY_TYPE, /* format for private key (default: PEM) */ 1407 STRING_KRB_LEVEL, /* krb security level */ 1408 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find 1409 $HOME/.netrc */ 1410 STRING_PROXY, /* proxy to use */ 1411 STRING_SET_RANGE, /* range, if used */ 1412 STRING_SET_REFERER, /* custom string for the HTTP referer field */ 1413 STRING_SET_URL, /* what original URL to work on */ 1414 STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */ 1415 STRING_SSL_CAFILE, /* certificate file to verify peer against */ 1416 STRING_SSL_PINNEDPUBLICKEY, /* public key file to verify peer against */ 1417 STRING_SSL_CIPHER_LIST, /* list of ciphers to use */ 1418 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */ 1419 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */ 1420 STRING_USERAGENT, /* User-Agent string */ 1421 STRING_SSL_CRLFILE, /* crl file to check certificate */ 1422 STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */ 1423 STRING_USERNAME, /* <username>, if used */ 1424 STRING_PASSWORD, /* <password>, if used */ 1425 STRING_OPTIONS, /* <options>, if used */ 1426 STRING_PROXYUSERNAME, /* Proxy <username>, if used */ 1427 STRING_PROXYPASSWORD, /* Proxy <password>, if used */ 1428 STRING_NOPROXY, /* List of hosts which should not use the proxy, if 1429 used */ 1430 STRING_RTSP_SESSION_ID, /* Session ID to use */ 1431 STRING_RTSP_STREAM_URI, /* Stream URI for this request */ 1432 STRING_RTSP_TRANSPORT, /* Transport for this session */ 1433#ifdef USE_LIBSSH2 1434 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */ 1435 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */ 1436 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */ 1437 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */ 1438#endif 1439#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1440 STRING_PROXY_SERVICE_NAME, /* Proxy service name */ 1441#endif 1442#if !defined(CURL_DISABLE_CRYPTO_AUTH) || defined(USE_KERBEROS5) || \ 1443 defined(USE_SPNEGO) 1444 STRING_SERVICE_NAME, /* Service name */ 1445#endif 1446 STRING_MAIL_FROM, 1447 STRING_MAIL_AUTH, 1448 1449#ifdef USE_TLS_SRP 1450 STRING_TLSAUTH_USERNAME, /* TLS auth <username> */ 1451 STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */ 1452#endif 1453 STRING_BEARER, /* <bearer>, if used */ 1454#ifdef USE_UNIX_SOCKETS 1455 STRING_UNIX_SOCKET_PATH, /* path to Unix socket, if used */ 1456#endif 1457 1458 /* -- end of zero-terminated strings -- */ 1459 1460 STRING_LASTZEROTERMINATED, 1461 1462 /* -- below this are pointers to binary data that cannot be strdup'ed. 1463 Each such pointer must be added manually to Curl_dupset() --- */ 1464 1465 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */ 1466 1467 STRING_LAST /* not used, just an end-of-list marker */ 1468}; 1469 1470struct UserDefined { 1471 FILE *err; /* the stderr user data goes here */ 1472 void *debugdata; /* the data that will be passed to fdebug */ 1473 char *errorbuffer; /* (Static) store failure messages in here */ 1474 long proxyport; /* If non-zero, use this port number by default. If the 1475 proxy string features a ":[port]" that one will override 1476 this. */ 1477 void *out; /* CURLOPT_WRITEDATA */ 1478 void *in_set; /* CURLOPT_READDATA */ 1479 void *writeheader; /* write the header to this if non-NULL */ 1480 void *rtp_out; /* write RTP to this if non-NULL */ 1481 long use_port; /* which port to use (when not using default) */ 1482 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */ 1483 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */ 1484 long followlocation; /* as in HTTP Location: */ 1485 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1 1486 for infinity */ 1487 1488 int keep_post; /* keep POSTs as POSTs after a 30x request; each 1489 bit represents a request, from 301 to 303 */ 1490 bool free_referer; /* set TRUE if 'referer' points to a string we 1491 allocated */ 1492 void *postfields; /* if POST, set the fields' values here */ 1493 curl_seek_callback seek_func; /* function that seeks the input */ 1494 curl_off_t postfieldsize; /* if POST, this might have a size to use instead 1495 of strlen(), and then the data *may* be binary 1496 (contain zero bytes) */ 1497 unsigned short localport; /* local port number to bind to */ 1498 int localportrange; /* number of additional port numbers to test in case the 1499 'localport' one can't be bind()ed */ 1500 curl_write_callback fwrite_func; /* function that stores the output */ 1501 curl_write_callback fwrite_header; /* function that stores headers */ 1502 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */ 1503 curl_read_callback fread_func_set; /* function that reads the input */ 1504 int is_fread_set; /* boolean, has read callback been set to non-NULL? */ 1505 int is_fwrite_set; /* boolean, has write callback been set to non-NULL? */ 1506 curl_progress_callback fprogress; /* OLD and deprecated progress callback */ 1507 curl_xferinfo_callback fxferinfo; /* progress callback */ 1508 curl_debug_callback fdebug; /* function that write informational data */ 1509 curl_ioctl_callback ioctl_func; /* function for I/O control */ 1510 curl_sockopt_callback fsockopt; /* function for setting socket options */ 1511 void *sockopt_client; /* pointer to pass to the socket options callback */ 1512 curl_opensocket_callback fopensocket; /* function for checking/translating 1513 the address and opening the 1514 socket */ 1515 void* opensocket_client; 1516 curl_closesocket_callback fclosesocket; /* function for closing the 1517 socket */ 1518 void* closesocket_client; 1519 1520 void *seek_client; /* pointer to pass to the seek callback */ 1521 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */ 1522 /* function to convert from the network encoding: */ 1523 curl_conv_callback convfromnetwork; 1524 /* function to convert to the network encoding: */ 1525 curl_conv_callback convtonetwork; 1526 /* function to convert from UTF-8 encoding: */ 1527 curl_conv_callback convfromutf8; 1528 1529 void *progress_client; /* pointer to pass to the progress callback */ 1530 void *ioctl_client; /* pointer to pass to the ioctl callback */ 1531 long timeout; /* in milliseconds, 0 means no timeout */ 1532 long connecttimeout; /* in milliseconds, 0 means no timeout */ 1533 long accepttimeout; /* in milliseconds, 0 means no timeout */ 1534 long server_response_timeout; /* in milliseconds, 0 means no timeout */ 1535 long tftp_blksize; /* in bytes, 0 means use default */ 1536 bool tftp_no_options; /* do not send TFTP options requests */ 1537 curl_off_t filesize; /* size of file to upload, -1 means unknown */ 1538 long low_speed_limit; /* bytes/second */ 1539 long low_speed_time; /* number of seconds */ 1540 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */ 1541 curl_off_t max_recv_speed; /* high speed limit in bytes/second for 1542 download */ 1543 curl_off_t set_resume_from; /* continue [ftp] transfer from here */ 1544 struct curl_slist *headers; /* linked list of extra headers */ 1545 struct curl_slist *proxyheaders; /* linked list of extra CONNECT headers */ 1546 struct curl_httppost *httppost; /* linked list of POST data */ 1547 bool sep_headers; /* handle host and proxy headers separately */ 1548 bool cookiesession; /* new cookie session? */ 1549 bool crlf; /* convert crlf on ftp upload(?) */ 1550 struct curl_slist *quote; /* after connection is established */ 1551 struct curl_slist *postquote; /* after the transfer */ 1552 struct curl_slist *prequote; /* before the transfer, after type */ 1553 struct curl_slist *source_quote; /* 3rd party quote */ 1554 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before 1555 the transfer on source host */ 1556 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after 1557 the transfer on source host */ 1558 struct curl_slist *telnet_options; /* linked list of telnet options */ 1559 struct curl_slist *resolve; /* list of names to add/remove from 1560 DNS cache */ 1561 struct curl_slist *connect_to; /* list of host:port mappings to override 1562 the hostname and port to connect to */ 1563 curl_TimeCond timecondition; /* kind of time/date comparison */ 1564 time_t timevalue; /* what time to compare with */ 1565 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */ 1566 long httpversion; /* when non-zero, a specific HTTP version requested to 1567 be used in the library's request(s) */ 1568 struct ssl_config_data ssl; /* user defined SSL stuff */ 1569 curl_proxytype proxytype; /* what kind of proxy that is in use */ 1570 long dns_cache_timeout; /* DNS cache timeout */ 1571 long buffer_size; /* size of receive buffer to use */ 1572 void *private_data; /* application-private data */ 1573 1574 struct curl_slist *http200aliases; /* linked list of aliases for http200 */ 1575 1576 long ipver; /* the CURL_IPRESOLVE_* defines in the public header file 1577 0 - whatever, 1 - v2, 2 - v6 */ 1578 1579 curl_off_t max_filesize; /* Maximum file size to download */ 1580 1581 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */ 1582 1583 int ftp_create_missing_dirs; /* 1 - create directories that don't exist 1584 2 - the same but also allow MKD to fail once 1585 */ 1586 1587 curl_sshkeycallback ssh_keyfunc; /* key matching callback */ 1588 void *ssh_keyfunc_userp; /* custom pointer to callback */ 1589 1590/* Here follows boolean settings that define how to behave during 1591 this session. They are STATIC, set by libcurl users or at least initially 1592 and they don't change during operations. */ 1593 1594 bool printhost; /* printing host name in debug info */ 1595 bool get_filetime; /* get the time and get of the remote file */ 1596 bool tunnel_thru_httpproxy; /* use CONNECT through a HTTP proxy */ 1597 bool prefer_ascii; /* ASCII rather than binary */ 1598 bool ftp_append; /* append, not overwrite, on upload */ 1599 bool ftp_list_only; /* switch FTP command for listing directories */ 1600 bool ftp_use_port; /* use the FTP PORT command */ 1601 bool hide_progress; /* don't use the progress meter */ 1602 bool http_fail_on_error; /* fail on HTTP error codes >= 400 */ 1603 bool http_follow_location; /* follow HTTP redirects */ 1604 bool http_transfer_encoding; /* request compressed HTTP transfer-encoding */ 1605 bool http_disable_hostname_check_before_authentication; 1606 bool include_header; /* include received protocol headers in data output */ 1607 bool http_set_referer; /* is a custom referer used */ 1608 bool http_auto_referer; /* set "correct" referer when following location: */ 1609 bool opt_no_body; /* as set with CURLOPT_NOBODY */ 1610 bool upload; /* upload request */ 1611 enum CURL_NETRC_OPTION 1612 use_netrc; /* defined in include/curl.h */ 1613 bool verbose; /* output verbosity */ 1614 bool krb; /* Kerberos connection requested */ 1615 bool reuse_forbid; /* forbidden to be reused, close after use */ 1616 bool reuse_fresh; /* do not re-use an existing connection */ 1617 bool ftp_use_epsv; /* if EPSV is to be attempted or not */ 1618 bool ftp_use_eprt; /* if EPRT is to be attempted or not */ 1619 bool ftp_use_pret; /* if PRET is to be used before PASV or not */ 1620 1621 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or 1622 IMAP or POP3 or others! */ 1623 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */ 1624 curl_ftpccc ftp_ccc; /* FTP CCC options */ 1625 bool no_signal; /* do not use any signal/alarm handler */ 1626 bool global_dns_cache; /* subject for future removal */ 1627 bool tcp_nodelay; /* whether to enable TCP_NODELAY or not */ 1628 bool ignorecl; /* ignore content length */ 1629 bool ftp_skip_ip; /* skip the IP address the FTP server passes on to 1630 us */ 1631 bool connect_only; /* make connection, let application use the socket */ 1632 bool ssl_enable_beast; /* especially allow this flaw for interoperability's 1633 sake*/ 1634 bool ssl_no_revoke; /* disable SSL certificate revocation checks */ 1635 long ssh_auth_types; /* allowed SSH auth types */ 1636 bool http_te_skip; /* pass the raw body data to the user, even when 1637 transfer-encoded (chunked, compressed) */ 1638 bool http_ce_skip; /* pass the raw body data to the user, even when 1639 content-encoded (chunked, compressed) */ 1640 long new_file_perms; /* Permissions to use when creating remote files */ 1641 long new_directory_perms; /* Permissions to use when creating remote dirs */ 1642 bool proxy_transfer_mode; /* set transfer mode (;type=<a|i>) when doing FTP 1643 via an HTTP proxy */ 1644 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */ 1645 unsigned int scope_id; /* Scope id for IPv6 */ 1646 long allowed_protocols; 1647 long redir_protocols; 1648#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1649 bool socks5_gssapi_nec; /* Flag to support NEC SOCKS5 server */ 1650#endif 1651 struct curl_slist *mail_rcpt; /* linked list of mail recipients */ 1652 bool sasl_ir; /* Enable/disable SASL initial response */ 1653 /* Common RTSP header options */ 1654 Curl_RtspReq rtspreq; /* RTSP request type */ 1655 long rtspversion; /* like httpversion, for RTSP */ 1656 bool wildcardmatch; /* enable wildcard matching */ 1657 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer 1658 starts */ 1659 curl_chunk_end_callback chunk_end; /* called after part transferring 1660 stopped */ 1661 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds 1662 to pattern (e.g. if WILDCARDMATCH is on) */ 1663 void *fnmatch_data; 1664 1665 long gssapi_delegation; /* GSS-API credential delegation, see the 1666 documentation of CURLOPT_GSSAPI_DELEGATION */ 1667 1668 bool tcp_keepalive; /* use TCP keepalives */ 1669 long tcp_keepidle; /* seconds in idle before sending keepalive probe */ 1670 long tcp_keepintvl; /* seconds between TCP keepalive probes */ 1671 bool tcp_fastopen; /* use TCP Fast Open */ 1672 1673 size_t maxconnects; /* Max idle connections in the connection cache */ 1674 1675 bool ssl_enable_npn; /* TLS NPN extension? */ 1676 bool ssl_enable_alpn; /* TLS ALPN extension? */ 1677 bool path_as_is; /* allow dotdots? */ 1678 bool pipewait; /* wait for pipe/multiplex status before starting a 1679 new connection */ 1680 long expect_100_timeout; /* in milliseconds */ 1681 1682 struct Curl_easy *stream_depends_on; 1683 bool stream_depends_e; /* set or don't set the Exclusive bit */ 1684 int stream_weight; 1685}; 1686 1687struct Names { 1688 struct curl_hash *hostcache; 1689 enum { 1690 HCACHE_NONE, /* not pointing to anything */ 1691 HCACHE_GLOBAL, /* points to the (shrug) global one */ 1692 HCACHE_MULTI, /* points to a shared one in the multi handle */ 1693 HCACHE_SHARED /* points to a shared one in a shared object */ 1694 } hostcachetype; 1695}; 1696 1697/* 1698 * The 'connectdata' struct MUST have all the connection oriented stuff as we 1699 * may have several simultaneous connections and connection structs in memory. 1700 * 1701 * The 'struct UserDefined' must only contain data that is set once to go for 1702 * many (perhaps) independent connections. Values that are generated or 1703 * calculated internally for the "session handle" must be defined within the 1704 * 'struct UrlState' instead. 1705 */ 1706 1707struct Curl_easy { 1708 /* first, two fields for the linked list of these */ 1709 struct Curl_easy *next; 1710 struct Curl_easy *prev; 1711 1712 struct connectdata *easy_conn; /* the "unit's" connection */ 1713 1714 CURLMstate mstate; /* the handle's state */ 1715 CURLcode result; /* previous result */ 1716 1717 struct Curl_message msg; /* A single posted message. */ 1718 1719 /* Array with the plain socket numbers this handle takes care of, in no 1720 particular order. Note that all sockets are added to the sockhash, where 1721 the state etc are also kept. This array is mostly used to detect when a 1722 socket is to be removed from the hash. See singlesocket(). */ 1723 curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE]; 1724 int numsocks; 1725 1726 struct Names dns; 1727 struct Curl_multi *multi; /* if non-NULL, points to the multi handle 1728 struct to which this "belongs" when used by 1729 the multi interface */ 1730 struct Curl_multi *multi_easy; /* if non-NULL, points to the multi handle 1731 struct to which this "belongs" when used 1732 by the easy interface */ 1733 struct Curl_share *share; /* Share, handles global variable mutexing */ 1734 struct SingleRequest req; /* Request-specific data */ 1735 struct UserDefined set; /* values set by the libcurl user */ 1736 struct DynamicStatic change; /* possibly modified userdefined data */ 1737 struct CookieInfo *cookies; /* the cookies, read from files and servers. 1738 NOTE that the 'cookie' field in the 1739 UserDefined struct defines if the "engine" 1740 is to be used or not. */ 1741 struct Progress progress; /* for all the progress meter data */ 1742 struct UrlState state; /* struct for fields used for state info and 1743 other dynamic purposes */ 1744 struct WildcardData wildcard; /* wildcard download state info */ 1745 struct PureInfo info; /* stats, reports and info data */ 1746 struct curl_tlssessioninfo tsi; /* Information about the TLS session, only 1747 valid after a client has asked for it */ 1748#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) 1749 iconv_t outbound_cd; /* for translating to the network encoding */ 1750 iconv_t inbound_cd; /* for translating from the network encoding */ 1751 iconv_t utf8_cd; /* for translating to UTF8 */ 1752#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */ 1753 unsigned int magic; /* set to a CURLEASY_MAGIC_NUMBER */ 1754}; 1755 1756#define LIBCURL_NAME "libcurl" 1757 1758#endif /* HEADER_CURL_URLDATA_H */ 1759