1#ifndef HEADER_CURL_URLDATA_H 2#define HEADER_CURL_URLDATA_H 3/*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2014, 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 http://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_SMTP 25 44#define PORT_SMTPS 465 /* sometimes called SSMTP */ 45#define PORT_RTSP 554 46#define PORT_RTMP 1935 47#define PORT_RTMPT PORT_HTTP 48#define PORT_RTMPS PORT_HTTPS 49#define PORT_GOPHER 70 50 51#define DICT_MATCH "/MATCH:" 52#define DICT_MATCH2 "/M:" 53#define DICT_MATCH3 "/FIND:" 54#define DICT_DEFINE "/DEFINE:" 55#define DICT_DEFINE2 "/D:" 56#define DICT_DEFINE3 "/LOOKUP:" 57 58#define CURL_DEFAULT_USER "anonymous" 59#define CURL_DEFAULT_PASSWORD "ftp@example.com" 60 61#define DEFAULT_CONNCACHE_SIZE 5 62 63/* length of longest IPv6 address string including the trailing null */ 64#define MAX_IPADR_LEN sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") 65 66/* Default FTP/IMAP etc response timeout in milliseconds. 67 Symbian OS panics when given a timeout much greater than 1/2 hour. 68*/ 69#define RESP_TIMEOUT (1800*1000) 70 71#include "cookie.h" 72#include "formdata.h" 73 74#ifdef USE_SSLEAY 75#ifdef USE_OPENSSL 76#include <openssl/rsa.h> 77#include <openssl/crypto.h> 78#include <openssl/x509.h> 79#include <openssl/pem.h> 80#include <openssl/ssl.h> 81#include <openssl/err.h> 82#ifdef HAVE_OPENSSL_ENGINE_H 83#include <openssl/engine.h> 84#endif 85#ifdef HAVE_OPENSSL_PKCS12_H 86#include <openssl/pkcs12.h> 87#endif 88#else /* SSLeay-style includes */ 89#include <rsa.h> 90#include <crypto.h> 91#include <x509.h> 92#include <pem.h> 93#include <ssl.h> 94#include <err.h> 95#ifdef HAVE_OPENSSL_ENGINE_H 96#include <engine.h> 97#endif 98#ifdef HAVE_OPENSSL_PKCS12_H 99#include <pkcs12.h> 100#endif 101#endif /* USE_OPENSSL */ 102#ifdef USE_GNUTLS 103#error Configuration error; cannot use GnuTLS *and* OpenSSL. 104#endif 105#endif /* USE_SSLEAY */ 106 107#ifdef USE_GNUTLS 108#include <gnutls/gnutls.h> 109#endif 110 111#ifdef USE_POLARSSL 112#include <polarssl/ssl.h> 113#include <polarssl/version.h> 114#if POLARSSL_VERSION_NUMBER<0x01010000 115#include <polarssl/havege.h> 116#else 117#include <polarssl/entropy.h> 118#include <polarssl/ctr_drbg.h> 119#endif /* POLARSSL_VERSION_NUMBER<0x01010000 */ 120#endif /* USE_POLARSSL */ 121 122#ifdef USE_CYASSL 123#undef OCSP_REQUEST /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */ 124#undef OCSP_RESPONSE /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */ 125#include <cyassl/openssl/ssl.h> 126#endif 127 128#ifdef USE_NSS 129#include <nspr.h> 130#include <pk11pub.h> 131#endif 132 133#ifdef USE_QSOSSL 134#include <qsossl.h> 135#endif 136 137#ifdef USE_GSKIT 138#include <gskssl.h> 139#endif 140 141#ifdef USE_AXTLS 142#include <axTLS/ssl.h> 143#undef malloc 144#undef calloc 145#undef realloc 146#endif /* USE_AXTLS */ 147 148#ifdef USE_SCHANNEL 149#include "curl_sspi.h" 150#include <schnlsp.h> 151#include <schannel.h> 152#endif 153 154#ifdef USE_DARWINSSL 155#include <Security/Security.h> 156/* For some reason, when building for iOS, the omnibus header above does 157 * not include SecureTransport.h as of iOS SDK 5.1. */ 158#include <Security/SecureTransport.h> 159#endif 160 161#ifdef HAVE_NETINET_IN_H 162#include <netinet/in.h> 163#endif 164 165#include "timeval.h" 166 167#ifdef HAVE_ZLIB_H 168#include <zlib.h> /* for content-encoding */ 169#ifdef __SYMBIAN32__ 170/* zlib pollutes the namespace with this definition */ 171#undef WIN32 172#endif 173#endif 174 175#include <curl/curl.h> 176 177#include "http_chunks.h" /* for the structs and enum stuff */ 178#include "hostip.h" 179#include "hash.h" 180#include "splay.h" 181 182#include "imap.h" 183#include "pop3.h" 184#include "smtp.h" 185#include "ftp.h" 186#include "file.h" 187#include "ssh.h" 188#include "http.h" 189#include "rtsp.h" 190#include "wildcard.h" 191#include "multihandle.h" 192 193#ifdef HAVE_GSSAPI 194# ifdef HAVE_GSSGNU 195# include <gss.h> 196# elif defined HAVE_GSSMIT 197# include <gssapi/gssapi.h> 198# include <gssapi/gssapi_generic.h> 199# else 200# include <gssapi.h> 201# endif 202#endif 203 204#ifdef HAVE_LIBSSH2_H 205#include <libssh2.h> 206#include <libssh2_sftp.h> 207#endif /* HAVE_LIBSSH2_H */ 208 209/* Download buffer size, keep it fairly big for speed reasons */ 210#undef BUFSIZE 211#define BUFSIZE CURL_MAX_WRITE_SIZE 212 213/* Initial size of the buffer to store headers in, it'll be enlarged in case 214 of need. */ 215#define HEADERSIZE 256 216 217#define CURLEASY_MAGIC_NUMBER 0xc0dedbadU 218 219/* Some convenience macros to get the larger/smaller value out of two given. 220 We prefix with CURL to prevent name collisions. */ 221#define CURLMAX(x,y) ((x)>(y)?(x):(y)) 222#define CURLMIN(x,y) ((x)<(y)?(x):(y)) 223 224 225#ifdef HAVE_GSSAPI 226/* Types needed for krb5-ftp connections */ 227struct krb5buffer { 228 void *data; 229 size_t size; 230 size_t index; 231 int eof_flag; 232}; 233 234enum protection_level { 235 PROT_NONE, /* first in list */ 236 PROT_CLEAR, 237 PROT_SAFE, 238 PROT_CONFIDENTIAL, 239 PROT_PRIVATE, 240 PROT_CMD, 241 PROT_LAST /* last in list */ 242}; 243#endif 244 245#ifdef USE_SCHANNEL 246/* Structs to store Schannel handles */ 247struct curl_schannel_cred { 248 CredHandle cred_handle; 249 TimeStamp time_stamp; 250 int refcount; 251 bool cached; 252}; 253 254struct curl_schannel_ctxt { 255 CtxtHandle ctxt_handle; 256 TimeStamp time_stamp; 257}; 258#endif 259 260/* enum for the nonblocking SSL connection state machine */ 261typedef enum { 262 ssl_connect_1, 263 ssl_connect_2, 264 ssl_connect_2_reading, 265 ssl_connect_2_writing, 266 ssl_connect_3, 267 ssl_connect_done 268} ssl_connect_state; 269 270typedef enum { 271 ssl_connection_none, 272 ssl_connection_negotiating, 273 ssl_connection_complete 274} ssl_connection_state; 275 276/* struct for data related to each SSL connection */ 277struct ssl_connect_data { 278 /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm 279 but at least asked to or meaning to use it. See 'state' for the exact 280 current state of the connection. */ 281 bool use; 282 ssl_connection_state state; 283#ifdef USE_SSLEAY 284 /* these ones requires specific SSL-types */ 285 SSL_CTX* ctx; 286 SSL* handle; 287 X509* server_cert; 288 ssl_connect_state connecting_state; 289#endif /* USE_SSLEAY */ 290#ifdef USE_GNUTLS 291 gnutls_session session; 292 gnutls_certificate_credentials cred; 293#ifdef USE_TLS_SRP 294 gnutls_srp_client_credentials srp_client_cred; 295#endif 296 ssl_connect_state connecting_state; 297#endif /* USE_GNUTLS */ 298#ifdef USE_POLARSSL 299 ctr_drbg_context ctr_drbg; 300 entropy_context entropy; 301 ssl_context ssl; 302 ssl_session ssn; 303 int server_fd; 304 x509_crt cacert; 305 x509_crt clicert; 306 x509_crl crl; 307 rsa_context rsa; 308 ssl_connect_state connecting_state; 309#endif /* USE_POLARSSL */ 310#ifdef USE_CYASSL 311 SSL_CTX* ctx; 312 SSL* handle; 313 ssl_connect_state connecting_state; 314#endif /* USE_CYASSL */ 315#ifdef USE_NSS 316 PRFileDesc *handle; 317 char *client_nickname; 318 struct SessionHandle *data; 319 struct curl_llist *obj_list; 320 PK11GenericObject *obj_clicert; 321#endif /* USE_NSS */ 322#ifdef USE_QSOSSL 323 SSLHandle *handle; 324#endif /* USE_QSOSSL */ 325#ifdef USE_GSKIT 326 gsk_handle handle; 327 int iocport; 328 ssl_connect_state connecting_state; 329#endif 330#ifdef USE_AXTLS 331 SSL_CTX* ssl_ctx; 332 SSL* ssl; 333 ssl_connect_state connecting_state; 334#endif /* USE_AXTLS */ 335#ifdef USE_SCHANNEL 336 struct curl_schannel_cred *cred; 337 struct curl_schannel_ctxt *ctxt; 338 SecPkgContext_StreamSizes stream_sizes; 339 ssl_connect_state connecting_state; 340 size_t encdata_length, decdata_length; 341 size_t encdata_offset, decdata_offset; 342 unsigned char *encdata_buffer, *decdata_buffer; 343 unsigned long req_flags, ret_flags; 344#endif /* USE_SCHANNEL */ 345#ifdef USE_DARWINSSL 346 SSLContextRef ssl_ctx; 347 curl_socket_t ssl_sockfd; 348 ssl_connect_state connecting_state; 349 bool ssl_direction; /* true if writing, false if reading */ 350 size_t ssl_write_buffered_length; 351#endif /* USE_DARWINSSL */ 352}; 353 354struct ssl_config_data { 355 long version; /* what version the client wants to use */ 356 long certverifyresult; /* result from the certificate verification */ 357 358 bool verifypeer; /* set TRUE if this is desired */ 359 bool verifyhost; /* set TRUE if CN/SAN must match hostname */ 360 char *CApath; /* certificate dir (doesn't work on windows) */ 361 char *CAfile; /* certificate to verify peer against */ 362 const char *CRLfile; /* CRL to check certificate revocation */ 363 const char *issuercert;/* optional issuer certificate filename */ 364 char *random_file; /* path to file containing "random" data */ 365 char *egdsocket; /* path to file containing the EGD daemon socket */ 366 char *cipher_list; /* list of ciphers to use */ 367 size_t max_ssl_sessions; /* SSL session id cache size */ 368 curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */ 369 void *fsslctxp; /* parameter for call back */ 370 bool sessionid; /* cache session IDs or not */ 371 bool certinfo; /* gather lots of certificate info */ 372 373#ifdef USE_TLS_SRP 374 char *username; /* TLS username (for, e.g., SRP) */ 375 char *password; /* TLS password (for, e.g., SRP) */ 376 enum CURL_TLSAUTH authtype; /* TLS authentication type (default SRP) */ 377#endif 378}; 379 380/* information stored about one single SSL session */ 381struct curl_ssl_session { 382 char *name; /* host name for which this ID was used */ 383 void *sessionid; /* as returned from the SSL layer */ 384 size_t idsize; /* if known, otherwise 0 */ 385 long age; /* just a number, the higher the more recent */ 386 int remote_port; /* remote port to connect to */ 387 struct ssl_config_data ssl_config; /* setup for this session */ 388}; 389 390/* Struct used for Digest challenge-response authentication */ 391struct digestdata { 392 char *nonce; 393 char *cnonce; 394 char *realm; 395 int algo; 396 bool stale; /* set true for re-negotiation */ 397 char *opaque; 398 char *qop; 399 char *algorithm; 400 int nc; /* nounce count */ 401}; 402 403typedef enum { 404 NTLMSTATE_NONE, 405 NTLMSTATE_TYPE1, 406 NTLMSTATE_TYPE2, 407 NTLMSTATE_TYPE3, 408 NTLMSTATE_LAST 409} curlntlm; 410 411#ifdef USE_WINDOWS_SSPI 412#include "curl_sspi.h" 413#endif 414 415#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) 416#include <iconv.h> 417#endif 418 419/* Struct used for NTLM challenge-response authentication */ 420struct ntlmdata { 421 curlntlm state; 422#ifdef USE_WINDOWS_SSPI 423 CredHandle handle; 424 CtxtHandle c_handle; 425 SEC_WINNT_AUTH_IDENTITY identity; 426 SEC_WINNT_AUTH_IDENTITY *p_identity; 427 int has_handles; 428 void *type_2; 429 unsigned long n_type_2; 430#else 431 unsigned int flags; 432 unsigned char nonce[8]; 433 void* target_info; /* TargetInfo received in the ntlm type-2 message */ 434 unsigned int target_info_len; 435#endif 436}; 437 438#ifdef USE_HTTP_NEGOTIATE 439struct negotiatedata { 440 /* when doing Negotiate we first need to receive an auth token and then we 441 need to send our header */ 442 enum { GSS_AUTHNONE, GSS_AUTHRECV, GSS_AUTHSENT } state; 443 bool gss; /* Whether we're processing GSS-Negotiate or Negotiate */ 444 const char* protocol; /* "GSS-Negotiate" or "Negotiate" */ 445#ifdef HAVE_GSSAPI 446 OM_uint32 status; 447 gss_ctx_id_t context; 448 gss_name_t server_name; 449 gss_buffer_desc output_token; 450#else 451#ifdef USE_WINDOWS_SSPI 452 DWORD status; 453 CtxtHandle *context; 454 CredHandle *credentials; 455 char server_name[1024]; 456 size_t max_token_length; 457 BYTE *output_token; 458 size_t output_token_length; 459#endif 460#endif 461}; 462#endif 463 464 465/* 466 * Boolean values that concerns this connection. 467 */ 468struct ConnectBits { 469 bool close; /* if set, we close the connection after this request */ 470 bool reuse; /* if set, this is a re-used connection */ 471 bool proxy; /* if set, this transfer is done through a proxy - any type */ 472 bool httpproxy; /* if set, this transfer is done through a http proxy */ 473 bool user_passwd; /* do we use user+password for this connection? */ 474 bool proxy_user_passwd; /* user+password for the proxy? */ 475 bool ipv6_ip; /* we communicate with a remote site specified with pure IPv6 476 IP address */ 477 bool ipv6; /* we communicate with a site using an IPv6 address */ 478 479 bool do_more; /* this is set TRUE if the ->curl_do_more() function is 480 supposed to be called, after ->curl_do() */ 481 bool tcpconnect[2]; /* the TCP layer (or similar) is connected, this is set 482 the first time on the first connect function call */ 483 bool protoconnstart;/* the protocol layer has STARTED its operation after 484 the TCP layer connect */ 485 486 bool retry; /* this connection is about to get closed and then 487 re-attempted at another connection. */ 488 bool tunnel_proxy; /* if CONNECT is used to "tunnel" through the proxy. 489 This is implicit when SSL-protocols are used through 490 proxies, but can also be enabled explicitly by 491 apps */ 492 bool authneg; /* TRUE when the auth phase has started, which means 493 that we are creating a request with an auth header, 494 but it is not the final request in the auth 495 negotiation. */ 496 bool rewindaftersend;/* TRUE when the sending couldn't be stopped even 497 though it will be discarded. When the whole send 498 operation is done, we must call the data rewind 499 callback. */ 500 bool ftp_use_epsv; /* As set with CURLOPT_FTP_USE_EPSV, but if we find out 501 EPSV doesn't work we disable it for the forthcoming 502 requests */ 503 504 bool ftp_use_eprt; /* As set with CURLOPT_FTP_USE_EPRT, but if we find out 505 EPRT doesn't work we disable it for the forthcoming 506 requests */ 507 bool netrc; /* name+password provided by netrc */ 508 bool userpwd_in_url; /* name+password found in url */ 509 510 bool done; /* set to FALSE when Curl_do() is called and set to TRUE 511 when Curl_done() is called, to prevent Curl_done() to 512 get invoked twice when the multi interface is 513 used. */ 514 bool stream_was_rewound; /* Indicates that the stream was rewound after a 515 request read past the end of its response byte 516 boundary */ 517 bool proxy_connect_closed; /* set true if a proxy disconnected the 518 connection in a CONNECT request with auth, so 519 that libcurl should reconnect and continue. */ 520 bool bound; /* set true if bind() has already been done on this socket/ 521 connection */ 522 bool type_set; /* type= was used in the URL */ 523}; 524 525struct hostname { 526 char *rawalloc; /* allocated "raw" version of the name */ 527 char *encalloc; /* allocated IDN-encoded version of the name */ 528 char *name; /* name to use internally, might be encoded, might be raw */ 529 const char *dispname; /* name to display, as 'name' might be encoded */ 530}; 531 532/* 533 * Flags on the keepon member of the Curl_transfer_keeper 534 */ 535 536#define KEEP_NONE 0 537#define KEEP_RECV (1<<0) /* there is or may be data to read */ 538#define KEEP_SEND (1<<1) /* there is or may be data to write */ 539#define KEEP_RECV_HOLD (1<<2) /* when set, no reading should be done but there 540 might still be data to read */ 541#define KEEP_SEND_HOLD (1<<3) /* when set, no writing should be done but there 542 might still be data to write */ 543#define KEEP_RECV_PAUSE (1<<4) /* reading is paused */ 544#define KEEP_SEND_PAUSE (1<<5) /* writing is paused */ 545 546#define KEEP_RECVBITS (KEEP_RECV | KEEP_RECV_HOLD | KEEP_RECV_PAUSE) 547#define KEEP_SENDBITS (KEEP_SEND | KEEP_SEND_HOLD | KEEP_SEND_PAUSE) 548 549 550#ifdef HAVE_LIBZ 551typedef enum { 552 ZLIB_UNINIT, /* uninitialized */ 553 ZLIB_INIT, /* initialized */ 554 ZLIB_GZIP_HEADER, /* reading gzip header */ 555 ZLIB_GZIP_INFLATING, /* inflating gzip stream */ 556 ZLIB_INIT_GZIP /* initialized in transparent gzip mode */ 557} zlibInitState; 558#endif 559 560#ifdef CURLRES_ASYNCH 561struct Curl_async { 562 char *hostname; 563 int port; 564 struct Curl_dns_entry *dns; 565 bool done; /* set TRUE when the lookup is complete */ 566 int status; /* if done is TRUE, this is the status from the callback */ 567 void *os_specific; /* 'struct thread_data' for Windows */ 568}; 569#endif 570 571#define FIRSTSOCKET 0 572#define SECONDARYSOCKET 1 573 574/* These function pointer types are here only to allow easier typecasting 575 within the source when we need to cast between data pointers (such as NULL) 576 and function pointers. */ 577typedef CURLcode (*Curl_do_more_func)(struct connectdata *, int *); 578typedef CURLcode (*Curl_done_func)(struct connectdata *, CURLcode, bool); 579 580enum expect100 { 581 EXP100_SEND_DATA, /* enough waiting, just send the body now */ 582 EXP100_AWAITING_CONTINUE, /* waiting for the 100 Continue header */ 583 EXP100_SENDING_REQUEST, /* still sending the request but will wait for 584 the 100 header once done with the request */ 585 EXP100_FAILED /* used on 417 Expectation Failed */ 586}; 587 588enum upgrade101 { 589 UPGR101_INIT, /* default state */ 590 UPGR101_REQUESTED, /* upgrade requested */ 591 UPGR101_RECEIVED, /* response received */ 592 UPGR101_WORKING /* talking upgraded protocol */ 593}; 594 595enum negotiatenpn { 596 NPN_INIT, /* default state */ 597 NPN_HTTP1_1, /* HTTP/1.1 negotiated */ 598 NPN_HTTP2_DRAFT09 /* HTTP-draft-0.9/2.0 negotiated */ 599}; 600 601/* 602 * Request specific data in the easy handle (SessionHandle). Previously, 603 * these members were on the connectdata struct but since a conn struct may 604 * now be shared between different SessionHandles, we store connection-specific 605 * data here. This struct only keeps stuff that's interesting for *this* 606 * request, as it will be cleared between multiple ones 607 */ 608struct SingleRequest { 609 curl_off_t size; /* -1 if unknown at this point */ 610 curl_off_t *bytecountp; /* return number of bytes read or NULL */ 611 612 curl_off_t maxdownload; /* in bytes, the maximum amount of data to fetch, 613 -1 means unlimited */ 614 curl_off_t *writebytecountp; /* return number of bytes written or NULL */ 615 616 curl_off_t bytecount; /* total number of bytes read */ 617 curl_off_t writebytecount; /* number of bytes written */ 618 619 long headerbytecount; /* only count received headers */ 620 long deductheadercount; /* this amount of bytes doesn't count when we check 621 if anything has been transferred at the end of a 622 connection. We use this counter to make only a 623 100 reply (without a following second response 624 code) result in a CURLE_GOT_NOTHING error code */ 625 626 struct timeval start; /* transfer started at this time */ 627 struct timeval now; /* current time */ 628 bool header; /* incoming data has HTTP header */ 629 enum { 630 HEADER_NORMAL, /* no bad header at all */ 631 HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest 632 is normal data */ 633 HEADER_ALLBAD /* all was believed to be header */ 634 } badheader; /* the header was deemed bad and will be 635 written as body */ 636 int headerline; /* counts header lines to better track the 637 first one */ 638 char *hbufp; /* points at *end* of header line */ 639 size_t hbuflen; 640 char *str; /* within buf */ 641 char *str_start; /* within buf */ 642 char *end_ptr; /* within buf */ 643 char *p; /* within headerbuff */ 644 bool content_range; /* set TRUE if Content-Range: was found */ 645 curl_off_t offset; /* possible resume offset read from the 646 Content-Range: header */ 647 int httpcode; /* error code from the 'HTTP/1.? XXX' or 648 'RTSP/1.? XXX' line */ 649 struct timeval start100; /* time stamp to wait for the 100 code from */ 650 enum expect100 exp100; /* expect 100 continue state */ 651 enum upgrade101 upgr101; /* 101 upgrade state */ 652 653 int auto_decoding; /* What content encoding. sec 3.5, RFC2616. */ 654 655#define IDENTITY 0 /* No encoding */ 656#define DEFLATE 1 /* zlib deflate [RFC 1950 & 1951] */ 657#define GZIP 2 /* gzip algorithm [RFC 1952] */ 658#define COMPRESS 3 /* Not handled, added for completeness */ 659 660#ifdef HAVE_LIBZ 661 zlibInitState zlib_init; /* possible zlib init state; 662 undefined if Content-Encoding header. */ 663 z_stream z; /* State structure for zlib. */ 664#endif 665 666 time_t timeofdoc; 667 long bodywrites; 668 669 char *buf; 670 char *uploadbuf; 671 curl_socket_t maxfd; 672 673 int keepon; 674 675 bool upload_done; /* set to TRUE when doing chunked transfer-encoding upload 676 and we're uploading the last chunk */ 677 678 bool ignorebody; /* we read a response-body but we ignore it! */ 679 bool ignorecl; /* This HTTP response has no body so we ignore the Content- 680 Length: header */ 681 682 char *location; /* This points to an allocated version of the Location: 683 header data */ 684 char *newurl; /* Set to the new URL to use when a redirect or a retry is 685 wanted */ 686 687 /* 'upload_present' is used to keep a byte counter of how much data there is 688 still left in the buffer, aimed for upload. */ 689 ssize_t upload_present; 690 691 /* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a 692 buffer, so the next read should read from where this pointer points to, 693 and the 'upload_present' contains the number of bytes available at this 694 position */ 695 char *upload_fromhere; 696 697 bool chunk; /* if set, this is a chunked transfer-encoding */ 698 bool upload_chunky; /* set TRUE if we are doing chunked transfer-encoding 699 on upload */ 700 bool getheader; /* TRUE if header parsing is wanted */ 701 702 bool forbidchunk; /* used only to explicitly forbid chunk-upload for 703 specific upload buffers. See readmoredata() in 704 http.c for details. */ 705 706 void *protop; /* Allocated protocol-specific data. Each protocol 707 handler makes sure this points to data it needs. */ 708}; 709 710/* 711 * Specific protocol handler. 712 */ 713 714struct Curl_handler { 715 const char * scheme; /* URL scheme name. */ 716 717 /* Complement to setup_connection_internals(). */ 718 CURLcode (*setup_connection)(struct connectdata *); 719 720 /* These two functions MUST be set to be protocol dependent */ 721 CURLcode (*do_it)(struct connectdata *, bool *done); 722 Curl_done_func done; 723 724 /* If the curl_do() function is better made in two halves, this 725 * curl_do_more() function will be called afterwards, if set. For example 726 * for doing the FTP stuff after the PASV/PORT command. 727 */ 728 Curl_do_more_func do_more; 729 730 /* This function *MAY* be set to a protocol-dependent function that is run 731 * after the connect() and everything is done, as a step in the connection. 732 * The 'done' pointer points to a bool that should be set to TRUE if the 733 * function completes before return. If it doesn't complete, the caller 734 * should call the curl_connecting() function until it is. 735 */ 736 CURLcode (*connect_it)(struct connectdata *, bool *done); 737 738 /* See above. Currently only used for FTP. */ 739 CURLcode (*connecting)(struct connectdata *, bool *done); 740 CURLcode (*doing)(struct connectdata *, bool *done); 741 742 /* Called from the multi interface during the PROTOCONNECT phase, and it 743 should then return a proper fd set */ 744 int (*proto_getsock)(struct connectdata *conn, 745 curl_socket_t *socks, 746 int numsocks); 747 748 /* Called from the multi interface during the DOING phase, and it should 749 then return a proper fd set */ 750 int (*doing_getsock)(struct connectdata *conn, 751 curl_socket_t *socks, 752 int numsocks); 753 754 /* Called from the multi interface during the DO_MORE phase, and it should 755 then return a proper fd set */ 756 int (*domore_getsock)(struct connectdata *conn, 757 curl_socket_t *socks, 758 int numsocks); 759 760 /* Called from the multi interface during the DO_DONE, PERFORM and 761 WAITPERFORM phases, and it should then return a proper fd set. Not setting 762 this will make libcurl use the generic default one. */ 763 int (*perform_getsock)(const struct connectdata *conn, 764 curl_socket_t *socks, 765 int numsocks); 766 767 /* This function *MAY* be set to a protocol-dependent function that is run 768 * by the curl_disconnect(), as a step in the disconnection. If the handler 769 * is called because the connection has been considered dead, dead_connection 770 * is set to TRUE. 771 */ 772 CURLcode (*disconnect)(struct connectdata *, bool dead_connection); 773 774 /* If used, this function gets called from transfer.c:readwrite_data() to 775 allow the protocol to do extra reads/writes */ 776 CURLcode (*readwrite)(struct SessionHandle *data, struct connectdata *conn, 777 ssize_t *nread, bool *readmore); 778 779 long defport; /* Default port. */ 780 unsigned int protocol; /* See CURLPROTO_* */ 781 unsigned int flags; /* Extra particular characteristics, see PROTOPT_* */ 782}; 783 784#define PROTOPT_NONE 0 /* nothing extra */ 785#define PROTOPT_SSL (1<<0) /* uses SSL */ 786#define PROTOPT_DUAL (1<<1) /* this protocol uses two connections */ 787#define PROTOPT_CLOSEACTION (1<<2) /* need action before socket close */ 788/* some protocols will have to call the underlying functions without regard to 789 what exact state the socket signals. IE even if the socket says "readable", 790 the send function might need to be called while uploading, or vice versa. 791*/ 792#define PROTOPT_DIRLOCK (1<<3) 793#define PROTOPT_NONETWORK (1<<4) /* protocol doesn't use the network! */ 794#define PROTOPT_NEEDSPWD (1<<5) /* needs a password, and if none is set it 795 gets a default */ 796#define PROTOPT_NOURLQUERY (1<<6) /* protocol can't handle 797 url query strings (?foo=bar) ! */ 798#define PROTOPT_CREDSPERREQUEST (1<<7) /* requires login creditials per request 799 as opposed to per connection */ 800 801 802/* return the count of bytes sent, or -1 on error */ 803typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */ 804 int sockindex, /* socketindex */ 805 const void *buf, /* data to write */ 806 size_t len, /* max amount to write */ 807 CURLcode *err); /* error to return */ 808 809/* return the count of bytes read, or -1 on error */ 810typedef ssize_t (Curl_recv)(struct connectdata *conn, /* connection data */ 811 int sockindex, /* socketindex */ 812 char *buf, /* store data here */ 813 size_t len, /* max amount to read */ 814 CURLcode *err); /* error to return */ 815 816/* 817 * The connectdata struct contains all fields and variables that should be 818 * unique for an entire connection. 819 */ 820struct connectdata { 821 /* 'data' is the CURRENT SessionHandle using this connection -- take great 822 caution that this might very well vary between different times this 823 connection is used! */ 824 struct SessionHandle *data; 825 826 /* chunk is for HTTP chunked encoding, but is in the general connectdata 827 struct only because we can do just about any protocol through a HTTP proxy 828 and a HTTP proxy may in fact respond using chunked encoding */ 829 struct Curl_chunker chunk; 830 831 curl_closesocket_callback fclosesocket; /* function closing the socket(s) */ 832 void *closesocket_client; 833 834 bool inuse; /* This is a marker for the connection cache logic. If this is 835 TRUE this handle is being used by an easy handle and cannot 836 be used by any other easy handle without careful 837 consideration (== only for pipelining). */ 838 839 /**** Fields set when inited and not modified again */ 840 long connection_id; /* Contains a unique number to make it easier to 841 track the connections in the log output */ 842 843 /* 'dns_entry' is the particular host we use. This points to an entry in the 844 DNS cache and it will not get pruned while locked. It gets unlocked in 845 Curl_done(). This entry will be NULL if the connection is re-used as then 846 there is no name resolve done. */ 847 struct Curl_dns_entry *dns_entry; 848 849 /* 'ip_addr' is the particular IP we connected to. It points to a struct 850 within the DNS cache, so this pointer is only valid as long as the DNS 851 cache entry remains locked. It gets unlocked in Curl_done() */ 852 Curl_addrinfo *ip_addr; 853 Curl_addrinfo *tempaddr[2]; /* for happy eyeballs */ 854 855 /* 'ip_addr_str' is the ip_addr data as a human readable string. 856 It remains available as long as the connection does, which is longer than 857 the ip_addr itself. */ 858 char ip_addr_str[MAX_IPADR_LEN]; 859 860 unsigned int scope; /* address scope for IPv6 */ 861 862 int socktype; /* SOCK_STREAM or SOCK_DGRAM */ 863 864 struct hostname host; 865 struct hostname proxy; 866 867 long port; /* which port to use locally */ 868 int remote_port; /* what remote port to connect to, not the proxy port! */ 869 870 /* 'primary_ip' and 'primary_port' get filled with peer's numerical 871 ip address and port number whenever an outgoing connection is 872 *attempted* from the primary socket to a remote address. When more 873 than one address is tried for a connection these will hold data 874 for the last attempt. When the connection is actually established 875 these are updated with data which comes directly from the socket. */ 876 877 char primary_ip[MAX_IPADR_LEN]; 878 long primary_port; 879 880 /* 'local_ip' and 'local_port' get filled with local's numerical 881 ip address and port number whenever an outgoing connection is 882 **established** from the primary socket to a remote address. */ 883 884 char local_ip[MAX_IPADR_LEN]; 885 long local_port; 886 887 char *user; /* user name string, allocated */ 888 char *passwd; /* password string, allocated */ 889 char *options; /* options string, allocated */ 890 891 char *xoauth2_bearer; /* bearer token for xoauth2, allocated */ 892 893 char *proxyuser; /* proxy user name string, allocated */ 894 char *proxypasswd; /* proxy password string, allocated */ 895 curl_proxytype proxytype; /* what kind of proxy that is in use */ 896 897 int httpversion; /* the HTTP version*10 reported by the server */ 898 int rtspversion; /* the RTSP version*10 reported by the server */ 899 900 struct timeval now; /* "current" time */ 901 struct timeval created; /* creation time */ 902 curl_socket_t sock[2]; /* two sockets, the second is used for the data 903 transfer when doing FTP */ 904 curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */ 905 bool sock_accepted[2]; /* TRUE if the socket on this index was created with 906 accept() */ 907 Curl_recv *recv[2]; 908 Curl_send *send[2]; 909 910 struct ssl_connect_data ssl[2]; /* this is for ssl-stuff */ 911 struct ssl_config_data ssl_config; 912 913 struct ConnectBits bits; /* various state-flags for this connection */ 914 915 /* connecttime: when connect() is called on the current IP address. Used to 916 be able to track when to move on to try next IP - but only when the multi 917 interface is used. */ 918 struct timeval connecttime; 919 /* The two fields below get set in Curl_connecthost */ 920 int num_addr; /* number of addresses to try to connect to */ 921 long timeoutms_per_addr; /* how long time in milliseconds to spend on 922 trying to connect to each IP address */ 923 924 const struct Curl_handler *handler; /* Connection's protocol handler */ 925 const struct Curl_handler *given; /* The protocol first given */ 926 927 long ip_version; /* copied from the SessionHandle at creation time */ 928 929 /**** curl_get() phase fields */ 930 931 curl_socket_t sockfd; /* socket to read from or CURL_SOCKET_BAD */ 932 curl_socket_t writesockfd; /* socket to write to, it may very 933 well be the same we read from. 934 CURL_SOCKET_BAD disables */ 935 936 /** Dynamicly allocated strings, MUST be freed before this **/ 937 /** struct is killed. **/ 938 struct dynamically_allocated_data { 939 char *proxyuserpwd; 940 char *uagent; 941 char *accept_encoding; 942 char *userpwd; 943 char *rangeline; 944 char *ref; 945 char *host; 946 char *cookiehost; 947 char *rtsp_transport; 948 char *te; /* TE: request header */ 949 } allocptr; 950 951 int sec_complete; /* if kerberos is enabled for this connection */ 952#ifdef HAVE_GSSAPI 953 enum protection_level command_prot; 954 enum protection_level data_prot; 955 enum protection_level request_data_prot; 956 size_t buffer_size; 957 struct krb5buffer in_buffer; 958 void *app_data; 959 const struct Curl_sec_client_mech *mech; 960 struct sockaddr_in local_addr; 961#endif 962 963 /* the two following *_inuse fields are only flags, not counters in any way. 964 If TRUE it means the channel is in use, and if FALSE it means the channel 965 is up for grabs by one. */ 966 967 bool readchannel_inuse; /* whether the read channel is in use by an easy 968 handle */ 969 bool writechannel_inuse; /* whether the write channel is in use by an easy 970 handle */ 971 struct curl_llist *send_pipe; /* List of handles waiting to 972 send on this pipeline */ 973 struct curl_llist *recv_pipe; /* List of handles waiting to read 974 their responses on this pipeline */ 975 char* master_buffer; /* The master buffer allocated on-demand; 976 used for pipelining. */ 977 size_t read_pos; /* Current read position in the master buffer */ 978 size_t buf_len; /* Length of the buffer?? */ 979 980 981 curl_seek_callback seek_func; /* function that seeks the input */ 982 void *seek_client; /* pointer to pass to the seek() above */ 983 984 /*************** Request - specific items ************/ 985 986 /* previously this was in the urldata struct */ 987 curl_read_callback fread_func; /* function that reads the input */ 988 void *fread_in; /* pointer to pass to the fread() above */ 989 990 struct ntlmdata ntlm; /* NTLM differs from other authentication schemes 991 because it authenticates connections, not 992 single requests! */ 993 struct ntlmdata proxyntlm; /* NTLM data for proxy */ 994 995#if defined(USE_NTLM) && defined(NTLM_WB_ENABLED) 996 /* used for communication with Samba's winbind daemon helper ntlm_auth */ 997 curl_socket_t ntlm_auth_hlpr_socket; 998 pid_t ntlm_auth_hlpr_pid; 999 char* challenge_header; 1000 char* response_header; 1001#endif 1002 1003 char syserr_buf [256]; /* buffer for Curl_strerror() */ 1004 1005#ifdef CURLRES_ASYNCH 1006 /* data used for the asynch name resolve callback */ 1007 struct Curl_async async; 1008#endif 1009 1010 /* These three are used for chunked-encoding trailer support */ 1011 char *trailer; /* allocated buffer to store trailer in */ 1012 int trlMax; /* allocated buffer size */ 1013 int trlPos; /* index of where to store data */ 1014 1015 union { 1016 struct ftp_conn ftpc; 1017 struct http_conn httpc; 1018 struct ssh_conn sshc; 1019 struct tftp_state_data *tftpc; 1020 struct imap_conn imapc; 1021 struct pop3_conn pop3c; 1022 struct smtp_conn smtpc; 1023 struct rtsp_conn rtspc; 1024 void *generic; /* RTMP and LDAP use this */ 1025 } proto; 1026 1027 int cselect_bits; /* bitmask of socket events */ 1028 int waitfor; /* current READ/WRITE bits to wait for */ 1029 1030#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1031 int socks5_gssapi_enctype; 1032#endif 1033 1034 bool verifypeer; 1035 bool verifyhost; 1036 1037 /* When this connection is created, store the conditions for the local end 1038 bind. This is stored before the actual bind and before any connection is 1039 made and will serve the purpose of being used for comparison reasons so 1040 that subsequent bound-requested connections aren't accidentally re-using 1041 wrong connections. */ 1042 char *localdev; 1043 unsigned short localport; 1044 int localportrange; 1045 1046 /* tunnel as in tunnel through a HTTP proxy with CONNECT */ 1047 enum { 1048 TUNNEL_INIT, /* init/default/no tunnel state */ 1049 TUNNEL_CONNECT, /* CONNECT has been sent off */ 1050 TUNNEL_COMPLETE /* CONNECT response received completely */ 1051 } tunnel_state[2]; /* two separate ones to allow FTP */ 1052 struct connectbundle *bundle; /* The bundle we are member of */ 1053 1054 enum negotiatenpn negnpn; 1055}; 1056 1057/* The end of connectdata. */ 1058 1059/* 1060 * Struct to keep statistical and informational data. 1061 */ 1062struct PureInfo { 1063 int httpcode; /* Recent HTTP, FTP, or RTSP response code */ 1064 int httpproxycode; /* response code from proxy when received separate */ 1065 int httpversion; /* the http version number X.Y = X*10+Y */ 1066 long filetime; /* If requested, this is might get set. Set to -1 if the time 1067 was unretrievable. We cannot have this of type time_t, 1068 since time_t is unsigned on several platforms such as 1069 OpenVMS. */ 1070 bool timecond; /* set to TRUE if the time condition didn't match, which 1071 thus made the document NOT get fetched */ 1072 long header_size; /* size of read header(s) in bytes */ 1073 long request_size; /* the amount of bytes sent in the request(s) */ 1074 unsigned long proxyauthavail; /* what proxy auth types were announced */ 1075 unsigned long httpauthavail; /* what host auth types were announced */ 1076 long numconnects; /* how many new connection did libcurl created */ 1077 char *contenttype; /* the content type of the object */ 1078 char *wouldredirect; /* URL this would've been redirected to if asked to */ 1079 1080 /* PureInfo members 'conn_primary_ip', 'conn_primary_port', 'conn_local_ip' 1081 and, 'conn_local_port' are copied over from the connectdata struct in 1082 order to allow curl_easy_getinfo() to return this information even when 1083 the session handle is no longer associated with a connection, and also 1084 allow curl_easy_reset() to clear this information from the session handle 1085 without disturbing information which is still alive, and that might be 1086 reused, in the connection cache. */ 1087 1088 char conn_primary_ip[MAX_IPADR_LEN]; 1089 long conn_primary_port; 1090 1091 char conn_local_ip[MAX_IPADR_LEN]; 1092 long conn_local_port; 1093 1094 struct curl_certinfo certs; /* info about the certs, only populated in 1095 OpenSSL builds. Asked for with 1096 CURLOPT_CERTINFO / CURLINFO_CERTINFO */ 1097}; 1098 1099 1100struct Progress { 1101 long lastshow; /* time() of the last displayed progress meter or NULL to 1102 force redraw at next call */ 1103 curl_off_t size_dl; /* total expected size */ 1104 curl_off_t size_ul; /* total expected size */ 1105 curl_off_t downloaded; /* transferred so far */ 1106 curl_off_t uploaded; /* transferred so far */ 1107 1108 curl_off_t current_speed; /* uses the currently fastest transfer */ 1109 1110 bool callback; /* set when progress callback is used */ 1111 int width; /* screen width at download start */ 1112 int flags; /* see progress.h */ 1113 1114 double timespent; 1115 1116 curl_off_t dlspeed; 1117 curl_off_t ulspeed; 1118 1119 double t_nslookup; 1120 double t_connect; 1121 double t_appconnect; 1122 double t_pretransfer; 1123 double t_starttransfer; 1124 double t_redirect; 1125 1126 struct timeval start; 1127 struct timeval t_startsingle; 1128 struct timeval t_acceptdata; 1129#define CURR_TIME (5+1) /* 6 entries for 5 seconds */ 1130 1131 curl_off_t speeder[ CURR_TIME ]; 1132 struct timeval speeder_time[ CURR_TIME ]; 1133 int speeder_c; 1134}; 1135 1136typedef enum { 1137 HTTPREQ_NONE, /* first in list */ 1138 HTTPREQ_GET, 1139 HTTPREQ_POST, 1140 HTTPREQ_POST_FORM, /* we make a difference internally */ 1141 HTTPREQ_PUT, 1142 HTTPREQ_HEAD, 1143 HTTPREQ_CUSTOM, 1144 HTTPREQ_LAST /* last in list */ 1145} Curl_HttpReq; 1146 1147typedef enum { 1148 RTSPREQ_NONE, /* first in list */ 1149 RTSPREQ_OPTIONS, 1150 RTSPREQ_DESCRIBE, 1151 RTSPREQ_ANNOUNCE, 1152 RTSPREQ_SETUP, 1153 RTSPREQ_PLAY, 1154 RTSPREQ_PAUSE, 1155 RTSPREQ_TEARDOWN, 1156 RTSPREQ_GET_PARAMETER, 1157 RTSPREQ_SET_PARAMETER, 1158 RTSPREQ_RECORD, 1159 RTSPREQ_RECEIVE, 1160 RTSPREQ_LAST /* last in list */ 1161} Curl_RtspReq; 1162 1163/* 1164 * Values that are generated, temporary or calculated internally for a 1165 * "session handle" must be defined within the 'struct UrlState'. This struct 1166 * will be used within the SessionHandle struct. When the 'SessionHandle' 1167 * struct is cloned, this data MUST NOT be copied. 1168 * 1169 * Remember that any "state" information goes globally for the curl handle. 1170 * Session-data MUST be put in the connectdata struct and here. */ 1171#define MAX_CURL_USER_LENGTH 256 1172#define MAX_CURL_PASSWORD_LENGTH 256 1173 1174struct auth { 1175 unsigned long want; /* Bitmask set to the authentication methods wanted by 1176 app (with CURLOPT_HTTPAUTH or CURLOPT_PROXYAUTH). */ 1177 unsigned long picked; 1178 unsigned long avail; /* Bitmask for what the server reports to support for 1179 this resource */ 1180 bool done; /* TRUE when the auth phase is done and ready to do the *actual* 1181 request */ 1182 bool multi; /* TRUE if this is not yet authenticated but within the auth 1183 multipass negotiation */ 1184 bool iestyle; /* TRUE if digest should be done IE-style or FALSE if it should 1185 be RFC compliant */ 1186}; 1187 1188struct UrlState { 1189 1190 /* Points to the connection cache */ 1191 struct conncache *conn_cache; 1192 1193 /* when curl_easy_perform() is called, the multi handle is "owned" by 1194 the easy handle so curl_easy_cleanup() on such an easy handle will 1195 also close the multi handle! */ 1196 bool multi_owned_by_easy; 1197 1198 /* buffers to store authentication data in, as parsed from input options */ 1199 struct timeval keeps_speed; /* for the progress meter really */ 1200 1201 struct connectdata *lastconnect; /* The last connection, NULL if undefined */ 1202 1203 char *headerbuff; /* allocated buffer to store headers in */ 1204 size_t headersize; /* size of the allocation */ 1205 1206 char buffer[BUFSIZE+1]; /* download buffer */ 1207 char uploadbuffer[BUFSIZE+1]; /* upload buffer */ 1208 curl_off_t current_speed; /* the ProgressShow() funcion sets this, 1209 bytes / second */ 1210 bool this_is_a_follow; /* this is a followed Location: request */ 1211 1212 char *first_host; /* if set, this should be the host name that we will 1213 sent authorization to, no else. Used to make Location: 1214 following not keep sending user+password... This is 1215 strdup() data. 1216 */ 1217 struct curl_ssl_session *session; /* array of 'max_ssl_sessions' size */ 1218 long sessionage; /* number of the most recent session */ 1219 char *tempwrite; /* allocated buffer to keep data in when a write 1220 callback returns to make the connection paused */ 1221 size_t tempwritesize; /* size of the 'tempwrite' allocated buffer */ 1222 int tempwritetype; /* type of the 'tempwrite' buffer as a bitmask that is 1223 used with Curl_client_write() */ 1224 char *scratch; /* huge buffer[BUFSIZE*2] when doing upload CRLF replacing */ 1225 bool errorbuf; /* Set to TRUE if the error buffer is already filled in. 1226 This must be set to FALSE every time _easy_perform() is 1227 called. */ 1228 int os_errno; /* filled in with errno whenever an error occurs */ 1229#ifdef HAVE_SIGNAL 1230 /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */ 1231 void (*prev_signal)(int sig); 1232#endif 1233 bool allow_port; /* Is set.use_port allowed to take effect or not. This 1234 is always set TRUE when curl_easy_perform() is called. */ 1235 struct digestdata digest; /* state data for host Digest auth */ 1236 struct digestdata proxydigest; /* state data for proxy Digest auth */ 1237 1238#ifdef USE_HTTP_NEGOTIATE 1239 struct negotiatedata negotiate; /* state data for host Negotiate auth */ 1240 struct negotiatedata proxyneg; /* state data for proxy Negotiate auth */ 1241#endif 1242 1243 struct auth authhost; /* auth details for host */ 1244 struct auth authproxy; /* auth details for proxy */ 1245 1246 bool authproblem; /* TRUE if there's some problem authenticating */ 1247 1248 void *resolver; /* resolver state, if it is used in the URL state - 1249 ares_channel f.e. */ 1250 1251#if defined(USE_SSLEAY) && defined(HAVE_OPENSSL_ENGINE_H) 1252 ENGINE *engine; 1253#endif /* USE_SSLEAY */ 1254 struct timeval expiretime; /* set this with Curl_expire() only */ 1255 struct Curl_tree timenode; /* for the splay stuff */ 1256 struct curl_llist *timeoutlist; /* list of pending timeouts */ 1257 1258 /* a place to store the most recently set FTP entrypath */ 1259 char *most_recent_ftp_entrypath; 1260 1261 /* set after initial USER failure, to prevent an authentication loop */ 1262 bool ftp_trying_alternative; 1263 1264 int httpversion; /* the lowest HTTP version*10 reported by any server 1265 involved in this request */ 1266 bool expect100header; /* TRUE if we added Expect: 100-continue */ 1267 1268 bool pipe_broke; /* TRUE if the connection we were pipelined on broke 1269 and we need to restart from the beginning */ 1270 1271#if !defined(WIN32) && !defined(MSDOS) && !defined(__EMX__) && \ 1272 !defined(__SYMBIAN32__) 1273/* do FTP line-end conversions on most platforms */ 1274#define CURL_DO_LINEEND_CONV 1275 /* for FTP downloads: track CRLF sequences that span blocks */ 1276 bool prev_block_had_trailing_cr; 1277 /* for FTP downloads: how many CRLFs did we converted to LFs? */ 1278 curl_off_t crlf_conversions; 1279#endif 1280 char *pathbuffer;/* allocated buffer to store the URL's path part in */ 1281 char *path; /* path to use, points to somewhere within the pathbuffer 1282 area */ 1283 bool slash_removed; /* set TRUE if the 'path' points to a path where the 1284 initial URL slash separator has been taken off */ 1285 bool use_range; 1286 bool rangestringalloc; /* the range string is malloc()'ed */ 1287 1288 char *range; /* range, if used. See README for detailed specification on 1289 this syntax. */ 1290 curl_off_t resume_from; /* continue [ftp] transfer from here */ 1291 1292 /* This RTSP state information survives requests and connections */ 1293 long rtsp_next_client_CSeq; /* the session's next client CSeq */ 1294 long rtsp_next_server_CSeq; /* the session's next server CSeq */ 1295 long rtsp_CSeq_recv; /* most recent CSeq received */ 1296 1297 /* if true, force SSL connection retry (workaround for certain servers) */ 1298 bool ssl_connect_retry; 1299}; 1300 1301 1302/* 1303 * This 'DynamicStatic' struct defines dynamic states that actually change 1304 * values in the 'UserDefined' area, which MUST be taken into consideration 1305 * if the UserDefined struct is cloned or similar. You can probably just 1306 * copy these, but each one indicate a special action on other data. 1307 */ 1308 1309struct DynamicStatic { 1310 char *url; /* work URL, copied from UserDefined */ 1311 bool url_alloc; /* URL string is malloc()'ed */ 1312 char *referer; /* referer string */ 1313 bool referer_alloc; /* referer sting is malloc()ed */ 1314 struct curl_slist *cookielist; /* list of cookie files set by 1315 curl_easy_setopt(COOKIEFILE) calls */ 1316 struct curl_slist *resolve; /* set to point to the set.resolve list when 1317 this should be dealt with in pretransfer */ 1318}; 1319 1320/* 1321 * This 'UserDefined' struct must only contain data that is set once to go 1322 * for many (perhaps) independent connections. Values that are generated or 1323 * calculated internally for the "session handle" MUST be defined within the 1324 * 'struct UrlState' instead. The only exceptions MUST note the changes in 1325 * the 'DynamicStatic' struct. 1326 * Character pointer fields point to dynamic storage, unless otherwise stated. 1327 */ 1328 1329struct Curl_multi; /* declared and used only in multi.c */ 1330 1331enum dupstring { 1332 STRING_CERT, /* client certificate file name */ 1333 STRING_CERT_TYPE, /* format for certificate (default: PEM)*/ 1334 STRING_COOKIE, /* HTTP cookie string to send */ 1335 STRING_COOKIEJAR, /* dump all cookies to this file */ 1336 STRING_CUSTOMREQUEST, /* HTTP/FTP/RTSP request/method to use */ 1337 STRING_DEVICE, /* local network interface/address to use */ 1338 STRING_ENCODING, /* Accept-Encoding string */ 1339 STRING_FTP_ACCOUNT, /* ftp account data */ 1340 STRING_FTP_ALTERNATIVE_TO_USER, /* command to send if USER/PASS fails */ 1341 STRING_FTPPORT, /* port to send with the FTP PORT command */ 1342 STRING_KEY, /* private key file name */ 1343 STRING_KEY_PASSWD, /* plain text private key password */ 1344 STRING_KEY_TYPE, /* format for private key (default: PEM) */ 1345 STRING_KRB_LEVEL, /* krb security level */ 1346 STRING_NETRC_FILE, /* if not NULL, use this instead of trying to find 1347 $HOME/.netrc */ 1348 STRING_COPYPOSTFIELDS, /* if POST, set the fields' values here */ 1349 STRING_PROXY, /* proxy to use */ 1350 STRING_SET_RANGE, /* range, if used */ 1351 STRING_SET_REFERER, /* custom string for the HTTP referer field */ 1352 STRING_SET_URL, /* what original URL to work on */ 1353 STRING_SSL_CAPATH, /* CA directory name (doesn't work on windows) */ 1354 STRING_SSL_CAFILE, /* certificate file to verify peer against */ 1355 STRING_SSL_CIPHER_LIST, /* list of ciphers to use */ 1356 STRING_SSL_EGDSOCKET, /* path to file containing the EGD daemon socket */ 1357 STRING_SSL_RANDOM_FILE, /* path to file containing "random" data */ 1358 STRING_USERAGENT, /* User-Agent string */ 1359 STRING_SSL_CRLFILE, /* crl file to check certificate */ 1360 STRING_SSL_ISSUERCERT, /* issuer cert file to check certificate */ 1361 STRING_USERNAME, /* <username>, if used */ 1362 STRING_PASSWORD, /* <password>, if used */ 1363 STRING_OPTIONS, /* <options>, if used */ 1364 STRING_PROXYUSERNAME, /* Proxy <username>, if used */ 1365 STRING_PROXYPASSWORD, /* Proxy <password>, if used */ 1366 STRING_NOPROXY, /* List of hosts which should not use the proxy, if 1367 used */ 1368 STRING_RTSP_SESSION_ID, /* Session ID to use */ 1369 STRING_RTSP_STREAM_URI, /* Stream URI for this request */ 1370 STRING_RTSP_TRANSPORT, /* Transport for this session */ 1371#ifdef USE_LIBSSH2 1372 STRING_SSH_PRIVATE_KEY, /* path to the private key file for auth */ 1373 STRING_SSH_PUBLIC_KEY, /* path to the public key file for auth */ 1374 STRING_SSH_HOST_PUBLIC_KEY_MD5, /* md5 of host public key in ascii hex */ 1375 STRING_SSH_KNOWNHOSTS, /* file name of knownhosts file */ 1376#endif 1377#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1378 STRING_SOCKS5_GSSAPI_SERVICE, /* GSSAPI service name */ 1379#endif 1380 STRING_MAIL_FROM, 1381 STRING_MAIL_AUTH, 1382 1383#ifdef USE_TLS_SRP 1384 STRING_TLSAUTH_USERNAME, /* TLS auth <username> */ 1385 STRING_TLSAUTH_PASSWORD, /* TLS auth <password> */ 1386#endif 1387 1388 STRING_BEARER, /* <bearer>, if used */ 1389 1390 /* -- end of strings -- */ 1391 STRING_LAST /* not used, just an end-of-list marker */ 1392}; 1393 1394struct UserDefined { 1395 FILE *err; /* the stderr user data goes here */ 1396 void *debugdata; /* the data that will be passed to fdebug */ 1397 char *errorbuffer; /* (Static) store failure messages in here */ 1398 long proxyport; /* If non-zero, use this port number by default. If the 1399 proxy string features a ":[port]" that one will override 1400 this. */ 1401 void *out; /* the fetched file goes here */ 1402 void *in; /* the uploaded file is read from here */ 1403 void *writeheader; /* write the header to this if non-NULL */ 1404 void *rtp_out; /* write RTP to this if non-NULL */ 1405 long use_port; /* which port to use (when not using default) */ 1406 unsigned long httpauth; /* kind of HTTP authentication to use (bitmask) */ 1407 unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */ 1408 long followlocation; /* as in HTTP Location: */ 1409 long maxredirs; /* maximum no. of http(s) redirects to follow, set to -1 1410 for infinity */ 1411 1412 int keep_post; /* keep POSTs as POSTs after a 30x request; each 1413 bit represents a request, from 301 to 303 */ 1414 bool free_referer; /* set TRUE if 'referer' points to a string we 1415 allocated */ 1416 void *postfields; /* if POST, set the fields' values here */ 1417 curl_seek_callback seek_func; /* function that seeks the input */ 1418 curl_off_t postfieldsize; /* if POST, this might have a size to use instead 1419 of strlen(), and then the data *may* be binary 1420 (contain zero bytes) */ 1421 unsigned short localport; /* local port number to bind to */ 1422 int localportrange; /* number of additional port numbers to test in case the 1423 'localport' one can't be bind()ed */ 1424 curl_write_callback fwrite_func; /* function that stores the output */ 1425 curl_write_callback fwrite_header; /* function that stores headers */ 1426 curl_write_callback fwrite_rtp; /* function that stores interleaved RTP */ 1427 curl_read_callback fread_func; /* function that reads the input */ 1428 int is_fread_set; /* boolean, has read callback been set to non-NULL? */ 1429 int is_fwrite_set; /* boolean, has write callback been set to non-NULL? */ 1430 curl_progress_callback fprogress; /* OLD and deprecated progress callback */ 1431 curl_xferinfo_callback fxferinfo; /* progress callback */ 1432 curl_debug_callback fdebug; /* function that write informational data */ 1433 curl_ioctl_callback ioctl_func; /* function for I/O control */ 1434 curl_sockopt_callback fsockopt; /* function for setting socket options */ 1435 void *sockopt_client; /* pointer to pass to the socket options callback */ 1436 curl_opensocket_callback fopensocket; /* function for checking/translating 1437 the address and opening the 1438 socket */ 1439 void* opensocket_client; 1440 curl_closesocket_callback fclosesocket; /* function for closing the 1441 socket */ 1442 void* closesocket_client; 1443 1444 void *seek_client; /* pointer to pass to the seek callback */ 1445 /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */ 1446 /* function to convert from the network encoding: */ 1447 curl_conv_callback convfromnetwork; 1448 /* function to convert to the network encoding: */ 1449 curl_conv_callback convtonetwork; 1450 /* function to convert from UTF-8 encoding: */ 1451 curl_conv_callback convfromutf8; 1452 1453 void *progress_client; /* pointer to pass to the progress callback */ 1454 void *ioctl_client; /* pointer to pass to the ioctl callback */ 1455 long timeout; /* in milliseconds, 0 means no timeout */ 1456 long connecttimeout; /* in milliseconds, 0 means no timeout */ 1457 long accepttimeout; /* in milliseconds, 0 means no timeout */ 1458 long server_response_timeout; /* in milliseconds, 0 means no timeout */ 1459 long tftp_blksize ; /* in bytes, 0 means use default */ 1460 curl_off_t infilesize; /* size of file to upload, -1 means unknown */ 1461 long low_speed_limit; /* bytes/second */ 1462 long low_speed_time; /* number of seconds */ 1463 curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */ 1464 curl_off_t max_recv_speed; /* high speed limit in bytes/second for 1465 download */ 1466 curl_off_t set_resume_from; /* continue [ftp] transfer from here */ 1467 struct curl_slist *headers; /* linked list of extra headers */ 1468 struct curl_httppost *httppost; /* linked list of POST data */ 1469 bool cookiesession; /* new cookie session? */ 1470 bool crlf; /* convert crlf on ftp upload(?) */ 1471 struct curl_slist *quote; /* after connection is established */ 1472 struct curl_slist *postquote; /* after the transfer */ 1473 struct curl_slist *prequote; /* before the transfer, after type */ 1474 struct curl_slist *source_quote; /* 3rd party quote */ 1475 struct curl_slist *source_prequote; /* in 3rd party transfer mode - before 1476 the transfer on source host */ 1477 struct curl_slist *source_postquote; /* in 3rd party transfer mode - after 1478 the transfer on source host */ 1479 struct curl_slist *telnet_options; /* linked list of telnet options */ 1480 struct curl_slist *resolve; /* list of names to add/remove from 1481 DNS cache */ 1482 curl_TimeCond timecondition; /* kind of time/date comparison */ 1483 time_t timevalue; /* what time to compare with */ 1484 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */ 1485 long httpversion; /* when non-zero, a specific HTTP version requested to 1486 be used in the library's request(s) */ 1487 struct ssl_config_data ssl; /* user defined SSL stuff */ 1488 curl_proxytype proxytype; /* what kind of proxy that is in use */ 1489 long dns_cache_timeout; /* DNS cache timeout */ 1490 long buffer_size; /* size of receive buffer to use */ 1491 void *private_data; /* application-private data */ 1492 1493 struct curl_slist *http200aliases; /* linked list of aliases for http200 */ 1494 1495 long ipver; /* the CURL_IPRESOLVE_* defines in the public header file 1496 0 - whatever, 1 - v2, 2 - v6 */ 1497 1498 curl_off_t max_filesize; /* Maximum file size to download */ 1499 1500 curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used */ 1501 1502 int ftp_create_missing_dirs; /* 1 - create directories that don't exist 1503 2 - the same but also allow MKD to fail once 1504 */ 1505 1506 curl_sshkeycallback ssh_keyfunc; /* key matching callback */ 1507 void *ssh_keyfunc_userp; /* custom pointer to callback */ 1508 1509/* Here follows boolean settings that define how to behave during 1510 this session. They are STATIC, set by libcurl users or at least initially 1511 and they don't change during operations. */ 1512 1513 bool printhost; /* printing host name in debug info */ 1514 bool get_filetime; /* get the time and get of the remote file */ 1515 bool tunnel_thru_httpproxy; /* use CONNECT through a HTTP proxy */ 1516 bool prefer_ascii; /* ASCII rather than binary */ 1517 bool ftp_append; /* append, not overwrite, on upload */ 1518 bool ftp_list_only; /* switch FTP command for listing directories */ 1519 bool ftp_use_port; /* use the FTP PORT command */ 1520 bool hide_progress; /* don't use the progress meter */ 1521 bool http_fail_on_error; /* fail on HTTP error codes >= 300 */ 1522 bool http_follow_location; /* follow HTTP redirects */ 1523 bool http_transfer_encoding; /* request compressed HTTP transfer-encoding */ 1524 bool http_disable_hostname_check_before_authentication; 1525 bool include_header; /* include received protocol headers in data output */ 1526 bool http_set_referer; /* is a custom referer used */ 1527 bool http_auto_referer; /* set "correct" referer when following location: */ 1528 bool opt_no_body; /* as set with CURLOPT_NOBODY */ 1529 bool set_port; /* custom port number used */ 1530 bool upload; /* upload request */ 1531 enum CURL_NETRC_OPTION 1532 use_netrc; /* defined in include/curl.h */ 1533 bool verbose; /* output verbosity */ 1534 bool krb; /* kerberos connection requested */ 1535 bool reuse_forbid; /* forbidden to be reused, close after use */ 1536 bool reuse_fresh; /* do not re-use an existing connection */ 1537 bool ftp_use_epsv; /* if EPSV is to be attempted or not */ 1538 bool ftp_use_eprt; /* if EPRT is to be attempted or not */ 1539 bool ftp_use_pret; /* if PRET is to be used before PASV or not */ 1540 1541 curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or 1542 IMAP or POP3 or others! */ 1543 curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */ 1544 curl_ftpccc ftp_ccc; /* FTP CCC options */ 1545 bool no_signal; /* do not use any signal/alarm handler */ 1546 bool global_dns_cache; /* subject for future removal */ 1547 bool tcp_nodelay; /* whether to enable TCP_NODELAY or not */ 1548 bool ignorecl; /* ignore content length */ 1549 bool ftp_skip_ip; /* skip the IP address the FTP server passes on to 1550 us */ 1551 bool connect_only; /* make connection, let application use the socket */ 1552 bool ssl_enable_beast; /* especially allow this flaw for interoperability's 1553 sake*/ 1554 long ssh_auth_types; /* allowed SSH auth types */ 1555 bool http_te_skip; /* pass the raw body data to the user, even when 1556 transfer-encoded (chunked, compressed) */ 1557 bool http_ce_skip; /* pass the raw body data to the user, even when 1558 content-encoded (chunked, compressed) */ 1559 long new_file_perms; /* Permissions to use when creating remote files */ 1560 long new_directory_perms; /* Permissions to use when creating remote dirs */ 1561 bool proxy_transfer_mode; /* set transfer mode (;type=<a|i>) when doing FTP 1562 via an HTTP proxy */ 1563 char *str[STRING_LAST]; /* array of strings, pointing to allocated memory */ 1564 unsigned int scope; /* address scope for IPv6 */ 1565 long allowed_protocols; 1566 long redir_protocols; 1567#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) 1568 long socks5_gssapi_nec; /* flag to support nec socks5 server */ 1569#endif 1570 struct curl_slist *mail_rcpt; /* linked list of mail recipients */ 1571 bool sasl_ir; /* Enable/disable SASL initial response */ 1572 /* Common RTSP header options */ 1573 Curl_RtspReq rtspreq; /* RTSP request type */ 1574 long rtspversion; /* like httpversion, for RTSP */ 1575 bool wildcardmatch; /* enable wildcard matching */ 1576 curl_chunk_bgn_callback chunk_bgn; /* called before part of transfer 1577 starts */ 1578 curl_chunk_end_callback chunk_end; /* called after part transferring 1579 stopped */ 1580 curl_fnmatch_callback fnmatch; /* callback to decide which file corresponds 1581 to pattern (e.g. if WILDCARDMATCH is on) */ 1582 void *fnmatch_data; 1583 1584 long gssapi_delegation; /* GSSAPI credential delegation, see the 1585 documentation of CURLOPT_GSSAPI_DELEGATION */ 1586 1587 bool tcp_keepalive; /* use TCP keepalives */ 1588 long tcp_keepidle; /* seconds in idle before sending keepalive probe */ 1589 long tcp_keepintvl; /* seconds between TCP keepalive probes */ 1590 1591 size_t maxconnects; /* Max idle connections in the connection cache */ 1592 1593 bool ssl_enable_npn; /* TLS NPN extension? */ 1594 bool ssl_enable_alpn; /* TLS ALPN extension? */ 1595 1596 long expect_100_timeout; /* in milliseconds */ 1597}; 1598 1599struct Names { 1600 struct curl_hash *hostcache; 1601 enum { 1602 HCACHE_NONE, /* not pointing to anything */ 1603 HCACHE_GLOBAL, /* points to the (shrug) global one */ 1604 HCACHE_MULTI, /* points to a shared one in the multi handle */ 1605 HCACHE_SHARED /* points to a shared one in a shared object */ 1606 } hostcachetype; 1607}; 1608 1609/* 1610 * The 'connectdata' struct MUST have all the connection oriented stuff as we 1611 * may have several simultaneous connections and connection structs in memory. 1612 * 1613 * The 'struct UserDefined' must only contain data that is set once to go for 1614 * many (perhaps) independent connections. Values that are generated or 1615 * calculated internally for the "session handle" must be defined within the 1616 * 'struct UrlState' instead. 1617 */ 1618 1619struct SessionHandle { 1620 /* first, two fields for the linked list of these */ 1621 struct SessionHandle *next; 1622 struct SessionHandle *prev; 1623 1624 struct connectdata *easy_conn; /* the "unit's" connection */ 1625 1626 CURLMstate mstate; /* the handle's state */ 1627 CURLcode result; /* previous result */ 1628 1629 struct Curl_message msg; /* A single posted message. */ 1630 1631 /* Array with the plain socket numbers this handle takes care of, in no 1632 particular order. Note that all sockets are added to the sockhash, where 1633 the state etc are also kept. This array is mostly used to detect when a 1634 socket is to be removed from the hash. See singlesocket(). */ 1635 curl_socket_t sockets[MAX_SOCKSPEREASYHANDLE]; 1636 int numsocks; 1637 1638 struct Names dns; 1639 struct Curl_multi *multi; /* if non-NULL, points to the multi handle 1640 struct to which this "belongs" when used by 1641 the multi interface */ 1642 struct Curl_multi *multi_easy; /* if non-NULL, points to the multi handle 1643 struct to which this "belongs" when used 1644 by the easy interface */ 1645 struct Curl_share *share; /* Share, handles global variable mutexing */ 1646 struct SingleRequest req; /* Request-specific data */ 1647 struct UserDefined set; /* values set by the libcurl user */ 1648 struct DynamicStatic change; /* possibly modified userdefined data */ 1649 struct CookieInfo *cookies; /* the cookies, read from files and servers. 1650 NOTE that the 'cookie' field in the 1651 UserDefined struct defines if the "engine" 1652 is to be used or not. */ 1653 struct Progress progress; /* for all the progress meter data */ 1654 struct UrlState state; /* struct for fields used for state info and 1655 other dynamic purposes */ 1656 struct WildcardData wildcard; /* wildcard download state info */ 1657 struct PureInfo info; /* stats, reports and info data */ 1658 struct curl_tlssessioninfo tsi; /* Information about the TLS session, only 1659 valid after a client has asked for it */ 1660#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV) 1661 iconv_t outbound_cd; /* for translating to the network encoding */ 1662 iconv_t inbound_cd; /* for translating from the network encoding */ 1663 iconv_t utf8_cd; /* for translating to UTF8 */ 1664#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */ 1665 unsigned int magic; /* set to a CURLEASY_MAGIC_NUMBER */ 1666}; 1667 1668#define LIBCURL_NAME "libcurl" 1669 1670#endif /* HEADER_CURL_URLDATA_H */ 1671