mirror of
https://github.com/curl/curl.git
synced 2024-12-03 06:20:31 +08:00
766 lines
23 KiB
C
766 lines
23 KiB
C
#ifndef __URLDATA_H
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#define __URLDATA_H
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/*****************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 2000, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* In order to be useful for every potential user, curl and libcurl are
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* dual-licensed under the MPL and the MIT/X-derivate licenses.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the MPL or the MIT/X-derivate
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* licenses. You may pick one of these licenses.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id$
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*****************************************************************************/
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/* This file is for lib internal stuff */
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#include "setup.h"
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 256
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#endif
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#define PORT_FTP 21
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#define PORT_TELNET 23
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#define PORT_GOPHER 70
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#define PORT_HTTP 80
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#define PORT_HTTPS 443
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#define PORT_DICT 2628
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#define PORT_LDAP 389
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#define DICT_MATCH "/MATCH:"
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#define DICT_MATCH2 "/M:"
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#define DICT_MATCH3 "/FIND:"
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#define DICT_DEFINE "/DEFINE:"
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#define DICT_DEFINE2 "/D:"
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#define DICT_DEFINE3 "/LOOKUP:"
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#define CURL_DEFAULT_USER "anonymous"
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#define CURL_DEFAULT_PASSWORD "curl_by_daniel@haxx.se"
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#include "cookie.h"
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#include "formdata.h"
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#ifdef USE_SSLEAY
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/* SSLeay stuff usually in /usr/local/ssl/include */
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#ifdef USE_OPENSSL
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#include "openssl/rsa.h"
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#include "openssl/crypto.h"
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#include "openssl/x509.h"
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#include "openssl/pem.h"
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#include "openssl/ssl.h"
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#include "openssl/err.h"
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#else
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#include "rsa.h"
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#include "crypto.h"
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#include "x509.h"
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#include "pem.h"
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#include "ssl.h"
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#include "err.h"
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#endif
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include "timeval.h"
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#include <curl/curl.h>
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/* Download buffer size, keep it fairly big for speed reasons */
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#define BUFSIZE (1024*50)
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/* Defaul upload buffer size, keep it smallish to get faster progress meter
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updates. This is just default, it is dynamic and adjusts to the upload
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speed. */
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#define UPLOAD_BUFSIZE (1024*2)
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/* Initial size of the buffer to store headers in, it'll be enlarged in case
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of need. */
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#define HEADERSIZE 256
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/* Just a convenience macro to get the larger value out of two given */
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#ifndef MAX
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#define MAX(x,y) ((x)>(y)?(x):(y))
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#endif
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/* Type of handle. All publicly returned 'handles' in the curl interface
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have a handle first in the struct that describes what kind of handle it
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is. Used to detect bad handle usage. */
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typedef enum {
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STRUCT_NONE,
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STRUCT_OPEN,
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STRUCT_CONNECT,
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STRUCT_LAST
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} Handle;
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/* Connecting to a remote server using the curl interface is moving through
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a state machine, this type is used to store the current state */
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typedef enum {
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CONN_NONE, /* illegal state */
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CONN_INIT, /* curl_connect() has been called */
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CONN_DO, /* curl_do() has been called successfully */
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CONN_DONE, /* curl_done() has been called successfully */
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CONN_ERROR, /* and error has occurred */
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CONN_LAST /* illegal state */
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} ConnState;
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#ifdef KRB4
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/* Types needed for krb4-ftp connections */
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struct krb4buffer {
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void *data;
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size_t size;
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size_t index;
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int eof_flag;
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};
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enum protection_level {
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prot_clear,
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prot_safe,
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prot_confidential,
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prot_private
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};
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#endif
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/* struct for data related to SSL and SSL connections */
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struct ssl_connect_data {
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bool use; /* use ssl encrypted communications TRUE/FALSE */
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#ifdef USE_SSLEAY
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/* these ones requires specific SSL-types */
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SSL_CTX* ctx;
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SSL* handle;
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X509* server_cert;
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#endif /* USE_SSLEAY */
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};
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struct ssl_config_data {
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long version; /* what version the client wants to use */
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long certverifyresult; /* result from the certificate verification */
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long verifypeer; /* set TRUE if this is desired */
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char *CApath; /* DOES NOT WORK ON WINDOWS */
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char *CAfile; /* cerficate to verify peer against */
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};
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/****************************************************************************
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* HTTP unique setup
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***************************************************************************/
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struct HTTP {
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struct FormData *sendit;
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int postsize;
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char *p_pragma; /* Pragma: string */
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char *p_accept; /* Accept: string */
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long readbytecount;
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long writebytecount;
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/* For FORM posting */
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struct Form form;
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size_t (*storefread)(char *, size_t , size_t , FILE *);
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FILE *in;
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};
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/****************************************************************************
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* FTP unique setup
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***************************************************************************/
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struct FTP {
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long *bytecountp;
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char *user; /* user name string */
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char *passwd; /* password string */
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char *urlpath; /* the originally given path part of the URL */
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char *dir; /* decoded directory */
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char *file; /* decoded file */
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};
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/*
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* Boolean values that concerns this connection.
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*/
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struct ConnectBits {
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bool close; /* if set, we close the connection after this request */
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};
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/*
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* The connectdata struct contains all fields and variables that should be
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* unique for an entire connection.
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*/
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struct connectdata {
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/**** Fields set when inited and not modified again */
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/* To better see what kind of struct that is passed as input, *ALL* publicly
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returned handles MUST have this initial 'Handle'. */
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Handle handle; /* struct identifier */
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struct UrlData *data; /* link to the root CURL struct */
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int connectindex; /* what index in the connects index this particular
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struct has */
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/**** curl_connect() phase fields */
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ConnState state; /* for state dependent actions */
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long protocol; /* PROT_* flags concerning the protocol set */
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#define PROT_MISSING (1<<0)
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#define PROT_GOPHER (1<<1)
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#define PROT_HTTP (1<<2)
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#define PROT_HTTPS (1<<3)
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#define PROT_FTP (1<<4)
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#define PROT_TELNET (1<<5)
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#define PROT_DICT (1<<6)
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#define PROT_LDAP (1<<7)
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#define PROT_FILE (1<<8)
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#ifdef ENABLE_IPV6
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struct addrinfo *hp; /* host info pointer list */
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struct addrinfo *ai; /* the particular host we use */
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#else
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char *hostent_buf; /* pointer to allocated memory for name info */
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struct hostent *hp;
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struct sockaddr_in serv_addr;
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#endif
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char protostr[64]; /* store the protocol string in this buffer */
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char gname[257]; /* store the hostname in this buffer */
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char *name; /* host name pointer to fool around with */
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char *path; /* allocated buffer to store the URL's path part in */
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char *hostname; /* hostname to connect, as parsed from url */
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long port; /* which port to use locally */
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unsigned short remote_port; /* what remote port to connect to,
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not the proxy port! */
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char *ppath;
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long bytecount;
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struct timeval now; /* current time */
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int firstsocket; /* the main socket to use */
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int secondarysocket; /* for i.e ftp transfers */
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long upload_bufsize; /* adjust as you see fit, never bigger than BUFSIZE
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never smaller than UPLOAD_BUFSIZE */
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long maxdownload; /* in bytes, the maximum amount of data to fetch, 0
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means unlimited */
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struct ssl_connect_data ssl; /* this is for ssl-stuff */
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struct ConnectBits bits; /* various state-flags for this connection */
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/* These two functions MUST be set by the curl_connect() function to be
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be protocol dependent */
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CURLcode (*curl_do)(struct connectdata *connect);
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CURLcode (*curl_done)(struct connectdata *connect);
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/* This function *MAY* be set to a protocol-dependent function that is run
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* after the connect() and everything is done, as a step in the connection.
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*/
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CURLcode (*curl_connect)(struct connectdata *connect);
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/* This function *MAY* be set to a protocol-dependent function that is run
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* in the curl_close() function if protocol-specific cleanups are required.
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*/
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CURLcode (*curl_close)(struct connectdata *connect);
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/**** curl_get() phase fields */
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/* READ stuff */
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int sockfd; /* socket to read from or -1 */
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int size; /* -1 if unknown at this point */
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bool getheader; /* TRUE if header parsing is wanted */
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long *bytecountp; /* return number of bytes read or NULL */
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/* WRITE stuff */
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int writesockfd; /* socket to write to, it may very well be
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the same we read from. -1 disables */
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long *writebytecountp; /* return number of bytes written or NULL */
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/** Dynamicly allocated strings, may need to be freed before this **/
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/** struct is killed. **/
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struct dynamically_allocated_data {
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char *proxyuserpwd; /* free later if not NULL! */
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char *uagent; /* free later if not NULL! */
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char *userpwd; /* free later if not NULL! */
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char *rangeline; /* free later if not NULL! */
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char *ref; /* free later if not NULL! */
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char *cookie; /* free later if not NULL! */
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char *host; /* free later if not NULL */
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} allocptr;
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#ifdef KRB4
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enum protection_level command_prot;
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enum protection_level data_prot;
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enum protection_level request_data_prot;
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size_t buffer_size;
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struct krb4buffer in_buffer, out_buffer;
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int sec_complete;
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void *app_data;
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#endif
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/*************** Request - specific items ************/
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/* previously this was in the urldata struct */
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union {
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struct HTTP *http;
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struct HTTP *gopher; /* alias, just for the sake of being more readable */
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struct HTTP *https; /* alias, just for the sake of being more readable */
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struct FTP *ftp;
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#if 0 /* no need for special ones for these: */
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struct TELNET *telnet;
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struct FILE *file;
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struct LDAP *ldap;
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struct DICT *dict;
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#endif
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void *generic;
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} proto;
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};
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struct Progress {
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long lastshow; /* time() of the last displayed progress meter or NULL to
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force redraw at next call */
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double size_dl;
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double size_ul;
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double downloaded;
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double uploaded;
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double current_speed; /* uses the currently fastest transfer */
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bool callback; /* set when progress callback is used */
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int width; /* screen width at download start */
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int flags; /* see progress.h */
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double timespent;
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double dlspeed;
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double ulspeed;
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struct timeval start;
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struct timeval t_startsingle;
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/* various data stored for possible later report */
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double t_nslookup;
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double t_connect;
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double t_pretransfer;
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int httpcode;
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time_t filetime; /* If requested, this is might get set. It may be 0 if
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the time was unretrievable */
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#define CURR_TIME 5
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double speeder[ CURR_TIME ];
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int speeder_c;
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};
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typedef enum {
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HTTPREQ_NONE, /* first in list */
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HTTPREQ_GET,
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HTTPREQ_POST,
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HTTPREQ_POST_FORM, /* we make a difference internally */
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HTTPREQ_PUT,
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HTTPREQ_CUSTOM,
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HTTPREQ_LAST /* last in list */
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} Curl_HttpReq;
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/* This struct is for boolean settings that define how to behave during
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this session. */
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struct Configbits {
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/* these four request types mirror the httpreq field */
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bool http_formpost;
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bool http_post;
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bool http_put;
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bool http_get;
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bool get_filetime;
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bool tunnel_thru_httpproxy;
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bool ftp_append;
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bool ftp_ascii;
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bool ftp_list_only;
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bool ftp_use_port;
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bool hide_progress;
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bool http_fail_on_error;
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bool http_follow_location;
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bool http_include_header;
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bool http_set_referer;
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bool http_auto_referer; /* set "correct" referer when following location: */
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bool httpproxy;
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bool mute;
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bool no_body;
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bool proxy_user_passwd;
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bool set_port;
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bool set_range;
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bool upload;
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bool use_netrc;
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bool user_passwd;
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bool verbose;
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bool this_is_a_follow; /* this is a followed Location: request */
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bool krb4; /* kerberos4 connection requested */
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bool proxystringalloc; /* the http proxy string is malloc()'ed */
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bool rangestringalloc; /* the range string is malloc()'ed */
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bool urlstringalloc; /* the URL string is malloc()'ed */
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};
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/* What type of interface that intiated this struct */
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typedef enum {
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CURLI_NONE,
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CURLI_EASY,
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CURLI_NORMAL,
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CURLI_LAST
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} CurlInterface;
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/*
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* As of April 11, 2000 we're now trying to split up the urldata struct in
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* three different parts:
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*
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* (Global)
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* 1 - No matter how many hosts and requests that are being performed, this
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* goes for all of them.
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*
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* (Session)
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* 2 - Host and protocol-specific. No matter if we do several transfers to and
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* from this host, these variables stay the same.
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*
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* (Request)
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* 3 - Request-specific. Variables that are of interest for this particular
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* transfer being made right now. THIS IS WRONG STRUCT FOR THOSE.
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*
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* In Febrary 2001, this is being done stricter. The 'connectdata' struct
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* MUST have all the connection oriented stuff as we may now have several
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* simultaneous connections and connection structs in memory.
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*
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* From now on, the 'UrlData' must only contain data that is set once to go
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* for many (perhaps) independent connections. Values that are generated or
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* calculated internally MUST NOT be a part of this struct.
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*/
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struct UrlData {
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Handle handle; /* struct identifier */
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CurlInterface interf; /* created by WHAT interface? */
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/*************** Global - specific items ************/
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FILE *err; /* the stderr writes goes here */
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char *errorbuffer; /* store failure messages in here */
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/*************** Session - specific items ************/
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char *proxy; /* if proxy, set it here */
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char *proxyuserpwd; /* Proxy <user:password>, if used */
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long proxyport; /* If non-zero, use this port number by default. If the
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proxy string features a ":[port]" that one will override
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this. */
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long header_size; /* size of read header(s) in bytes */
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long request_size; /* the amount of bytes sent in the request(s) */
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FILE *out; /* the fetched file goes here */
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FILE *in; /* the uploaded file is read from here */
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FILE *writeheader; /* write the header to this is non-NULL */
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char *url; /* what to get */
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char *freethis; /* if non-NULL, an allocated string for the URL */
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long port; /* which port to use (if non-protocol bind) */
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unsigned short remote_port; /* what remote port to connect to, not the proxy
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port! */
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struct Configbits bits; /* new-style (v7) flag data */
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struct ssl_config_data ssl; /* this is for ssl-stuff */
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char *userpwd; /* <user:password>, if used */
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char *range; /* range, if used. See README for detailed specification on
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this syntax. */
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/* stuff related to HTTP */
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long followlocation;
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long maxredirs; /* maximum no. of http(s) redirects to follow */
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char *referer;
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bool free_referer; /* set TRUE if 'referer' points to a string we
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allocated */
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char *useragent; /* User-Agent string */
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char *postfields; /* if POST, set the fields' values here */
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long postfieldsize; /* if POST, this might have a size to use instead of
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strlen(), and then the data *may* be binary (contain
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zero bytes) */
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/* stuff related to FTP */
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char *ftpport; /* port to send with the PORT command */
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/* general things */
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char *device; /* Interface to use */
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/* function that stores the output:*/
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curl_write_callback fwrite;
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/* function that reads the input:*/
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curl_read_callback fread;
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/* function that wants progress information */
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curl_progress_callback fprogress;
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void *progress_client; /* pointer to pass to the progress callback */
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/* function to call instead of the internal for password */
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curl_passwd_callback fpasswd;
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void *passwd_client; /* pointer to pass to the passwd callback */
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long timeout; /* in seconds, 0 means no timeout */
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long infilesize; /* size of file to upload, -1 means unknown */
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char buffer[BUFSIZE+1]; /* buffer with size BUFSIZE */
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double current_speed; /* the ProgressShow() funcion sets this */
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long low_speed_limit; /* bytes/second */
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long low_speed_time; /* number of seconds */
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int resume_from; /* continue [ftp] transfer from here */
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char *cookie; /* HTTP cookie string to send */
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char *newurl; /* This can only be set if a Location: was in the
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document headers */
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struct curl_slist *headers; /* linked list of extra headers */
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struct HttpPost *httppost; /* linked list of POST data */
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char *cert; /* PEM-formatted certificate */
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char *cert_passwd; /* plain text certificate password */
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struct CookieInfo *cookies;
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long crlf;
|
|
struct curl_slist *quote; /* before the transfer */
|
|
struct curl_slist *postquote; /* after the transfer */
|
|
|
|
/* Telnet negotiation options */
|
|
struct curl_slist *telnet_options; /* linked list of telnet options */
|
|
|
|
TimeCond timecondition; /* kind of comparison */
|
|
time_t timevalue; /* what time to compare with */
|
|
|
|
Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
|
|
|
|
char *customrequest; /* http/ftp request to use */
|
|
|
|
char *headerbuff; /* allocated buffer to store headers in */
|
|
int headersize; /* size of the allocation */
|
|
|
|
struct Progress progress; /* for all the progress meter data */
|
|
|
|
#define MAX_CURL_USER_LENGTH 128
|
|
#define MAX_CURL_PASSWORD_LENGTH 128
|
|
|
|
char *auth_host; /* if set, this is the allocated string to the host name
|
|
* to which to send the authorization data to, and no other
|
|
* host (which location-following otherwise could lead to)
|
|
*/
|
|
|
|
/* buffers to store authentication data in */
|
|
char user[MAX_CURL_USER_LENGTH];
|
|
char passwd[MAX_CURL_PASSWORD_LENGTH];
|
|
char proxyuser[MAX_CURL_USER_LENGTH];
|
|
char proxypasswd[MAX_CURL_PASSWORD_LENGTH];
|
|
|
|
char *krb4_level; /* what security level */
|
|
#ifdef KRB4
|
|
FILE *cmdchannel;
|
|
#endif
|
|
|
|
struct timeval keeps_speed; /* this should be request-specific */
|
|
|
|
/* 'connects' will be an allocated array with pointers. If the pointer is
|
|
set, it holds an allocated connection. */
|
|
struct connectdata **connects;
|
|
size_t numconnects; /* size of the 'connects' array */
|
|
curl_closepolicy closepolicy;
|
|
|
|
};
|
|
|
|
#define LIBCURL_NAME "libcurl"
|
|
#define LIBCURL_ID LIBCURL_NAME " " LIBCURL_VERSION " " SSL_ID
|
|
|
|
/*
|
|
* Here follows function prototypes from what we used to plan to call
|
|
* the "low level" interface. It is no longer prioritized and it is not likely
|
|
* to ever be supported to external users.
|
|
*/
|
|
|
|
/*
|
|
* NAME curl_init()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Inits libcurl globally. This must be used before any libcurl calls can
|
|
* be used. This may install global plug-ins or whatever. (This does not
|
|
* do winsock inits in Windows.)
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* curl_init();
|
|
*
|
|
*/
|
|
CURLcode curl_init(void);
|
|
|
|
/*
|
|
* NAME curl_init()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Frees libcurl globally. This must be used after all libcurl calls have
|
|
* been used. This may remove global plug-ins or whatever. (This does not
|
|
* do winsock cleanups in Windows.)
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* curl_free(curl);
|
|
*
|
|
*/
|
|
void curl_free(void);
|
|
|
|
/*
|
|
* NAME curl_open()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Opens a general curl session. It does not try to connect or do anything
|
|
* on the network because of this call. The specified URL is only required
|
|
* to enable curl to figure out what protocol to "activate".
|
|
*
|
|
* A session should be looked upon as a series of requests to a single host. A
|
|
* session interacts with one host only, using one single protocol.
|
|
*
|
|
* The URL is not required. If set to "" or NULL, it can still be set later
|
|
* using the curl_setopt() function. If the curl_connect() function is called
|
|
* without the URL being known, it will return error.
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURLcode result;
|
|
* CURL *curl;
|
|
* result = curl_open(&curl, "http://curl.haxx.nu/libcurl/");
|
|
* if(result != CURL_OK) {
|
|
* return result;
|
|
* }
|
|
* */
|
|
CURLcode curl_open(CURL **curl, char *url);
|
|
|
|
/*
|
|
* NAME curl_setopt()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Sets a particular option to the specified value.
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURL curl;
|
|
* curl_setopt(curl, CURL_HTTP_FOLLOW_LOCATION, TRUE);
|
|
*/
|
|
CURLcode curl_setopt(CURL *handle, CURLoption option, ...);
|
|
|
|
/*
|
|
* NAME curl_close()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Closes a session previously opened with curl_open()
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURL *curl;
|
|
* CURLcode result;
|
|
*
|
|
* result = curl_close(curl);
|
|
*/
|
|
CURLcode curl_close(CURL *curl); /* the opposite of curl_open() */
|
|
|
|
CURLcode curl_read(CURLconnect *c_conn, char *buf, size_t buffersize,
|
|
ssize_t *n);
|
|
CURLcode curl_write(CURLconnect *c_conn, char *buf, size_t amount,
|
|
size_t *n);
|
|
|
|
/*
|
|
* NAME curl_connect()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Connects to the peer server and performs the initial setup. This function
|
|
* writes a connect handle to its second argument that is a unique handle for
|
|
* this connect. This allows multiple connects from the same handle returned
|
|
* by curl_open().
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURLCode result;
|
|
* CURL curl;
|
|
* CURLconnect connect;
|
|
* result = curl_connect(curl, &connect);
|
|
*/
|
|
|
|
CURLcode curl_connect(CURL *curl, CURLconnect **in_connect);
|
|
|
|
/*
|
|
* NAME curl_do()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* (Note: May 3rd 2000: this function does not currently allow you to
|
|
* specify a document, it will use the one set previously)
|
|
*
|
|
* This function asks for the particular document, file or resource that
|
|
* resides on the server we have connected to. You may specify a full URL,
|
|
* just an absolute path or even a relative path. That means, if you're just
|
|
* getting one file from the remote site, you can use the same URL as input
|
|
* for both curl_open() as well as for this function.
|
|
*
|
|
* In the even there is a host name, port number, user name or password parts
|
|
* in the URL, you can use the 'flags' argument to ignore them completely, or
|
|
* at your choice, make the function fail if you're trying to get a URL from
|
|
* different host than you connected to with curl_connect().
|
|
*
|
|
* You can only get one document at a time using the same connection. When one
|
|
* document has been received you can although request again.
|
|
*
|
|
* When the transfer is done, curl_done() MUST be called.
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURLCode result;
|
|
* char *url;
|
|
* CURLconnect *connect;
|
|
* result = curl_do(connect, url, CURL_DO_NONE); */
|
|
CURLcode curl_do(CURLconnect *in_conn);
|
|
|
|
/*
|
|
* NAME curl_done()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* When the transfer following a curl_do() call is done, this function should
|
|
* get called.
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURLCode result;
|
|
* char *url;
|
|
* CURLconnect *connect;
|
|
* result = curl_done(connect); */
|
|
CURLcode curl_done(CURLconnect *connect);
|
|
|
|
/*
|
|
* NAME curl_disconnect()
|
|
*
|
|
* DESCRIPTION
|
|
*
|
|
* Disconnects from the peer server and performs connection cleanup.
|
|
*
|
|
* EXAMPLE
|
|
*
|
|
* CURLcode result;
|
|
* CURLconnect *connect;
|
|
* result = curl_disconnect(connect); */
|
|
CURLcode curl_disconnect(CURLconnect *connect);
|
|
|
|
|
|
#endif
|