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* HTTPS proxies:
An HTTPS proxy receives all transactions over an SSL/TLS connection.
Once a secure connection with the proxy is established, the user agent
uses the proxy as usual, including sending CONNECT requests to instruct
the proxy to establish a [usually secure] TCP tunnel with an origin
server. HTTPS proxies protect nearly all aspects of user-proxy
communications as opposed to HTTP proxies that receive all requests
(including CONNECT requests) in vulnerable clear text.
With HTTPS proxies, it is possible to have two concurrent _nested_
SSL/TLS sessions: the "outer" one between the user agent and the proxy
and the "inner" one between the user agent and the origin server
(through the proxy). This change adds supports for such nested sessions
as well.
A secure connection with a proxy requires its own set of the usual SSL
options (their actual descriptions differ and need polishing, see TODO):
--proxy-cacert FILE CA certificate to verify peer against
--proxy-capath DIR CA directory to verify peer against
--proxy-cert CERT[:PASSWD] Client certificate file and password
--proxy-cert-type TYPE Certificate file type (DER/PEM/ENG)
--proxy-ciphers LIST SSL ciphers to use
--proxy-crlfile FILE Get a CRL list in PEM format from the file
--proxy-insecure Allow connections to proxies with bad certs
--proxy-key KEY Private key file name
--proxy-key-type TYPE Private key file type (DER/PEM/ENG)
--proxy-pass PASS Pass phrase for the private key
--proxy-ssl-allow-beast Allow security flaw to improve interop
--proxy-sslv2 Use SSLv2
--proxy-sslv3 Use SSLv3
--proxy-tlsv1 Use TLSv1
--proxy-tlsuser USER TLS username
--proxy-tlspassword STRING TLS password
--proxy-tlsauthtype STRING TLS authentication type (default SRP)
All --proxy-foo options are independent from their --foo counterparts,
except --proxy-crlfile which defaults to --crlfile and --proxy-capath
which defaults to --capath.
Curl now also supports %{proxy_ssl_verify_result} --write-out variable,
similar to the existing %{ssl_verify_result} variable.
Supported backends: OpenSSL, GnuTLS, and NSS.
* A SOCKS proxy + HTTP/HTTPS proxy combination:
If both --socks* and --proxy options are given, Curl first connects to
the SOCKS proxy and then connects (through SOCKS) to the HTTP or HTTPS
proxy.
TODO: Update documentation for the new APIs and --proxy-* options.
Look for "Added in 7.XXX" marks.
92 lines
3.8 KiB
C
92 lines
3.8 KiB
C
#ifndef HEADER_CURL_URL_H
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#define HEADER_CURL_URL_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) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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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 COPYING file.
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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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***************************************************************************/
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#include "curl_setup.h"
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/*
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* Prototypes for library-wide functions provided by url.c
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*/
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CURLcode Curl_init_do(struct Curl_easy *data, struct connectdata *conn);
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CURLcode Curl_open(struct Curl_easy **curl);
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CURLcode Curl_init_userdefined(struct UserDefined *set);
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CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
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va_list arg);
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CURLcode Curl_dupset(struct Curl_easy * dst, struct Curl_easy * src);
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void Curl_freeset(struct Curl_easy * data);
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CURLcode Curl_close(struct Curl_easy *data); /* opposite of curl_open() */
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CURLcode Curl_connect(struct Curl_easy *, struct connectdata **,
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bool *async, bool *protocol_connect);
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CURLcode Curl_disconnect(struct connectdata *, bool dead_connection);
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CURLcode Curl_protocol_connect(struct connectdata *conn, bool *done);
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CURLcode Curl_protocol_connecting(struct connectdata *conn, bool *done);
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CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done);
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CURLcode Curl_setup_conn(struct connectdata *conn,
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bool *protocol_done);
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void Curl_free_request_state(struct Curl_easy *data);
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int Curl_protocol_getsock(struct connectdata *conn,
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curl_socket_t *socks,
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int numsocks);
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int Curl_doing_getsock(struct connectdata *conn,
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curl_socket_t *socks,
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int numsocks);
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bool Curl_isPipeliningEnabled(const struct Curl_easy *handle);
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CURLcode Curl_addHandleToPipeline(struct Curl_easy *handle,
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struct curl_llist *pipeline);
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int Curl_removeHandleFromPipeline(struct Curl_easy *handle,
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struct curl_llist *pipeline);
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struct connectdata *
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Curl_oldest_idle_connection(struct Curl_easy *data);
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/* remove the specified connection from all (possible) pipelines and related
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queues */
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void Curl_getoff_all_pipelines(struct Curl_easy *data,
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struct connectdata *conn);
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void Curl_close_connections(struct Curl_easy *data);
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#define CURL_DEFAULT_PROXY_PORT 1080 /* default proxy port unless specified */
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CURLcode Curl_connected_proxy(struct connectdata *conn, int sockindex);
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#ifdef CURL_DISABLE_VERBOSE_STRINGS
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#define Curl_verboseconnect(x) Curl_nop_stmt
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#else
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void Curl_verboseconnect(struct connectdata *conn);
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#endif
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#define CONNECT_PROXY_SSL()\
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(conn->http_proxy.proxytype == CURLPROXY_HTTPS &&\
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!conn->bits.proxy_ssl_connected[sockindex])
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#define CONNECT_FIRSTSOCKET_PROXY_SSL()\
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(conn->http_proxy.proxytype == CURLPROXY_HTTPS &&\
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!conn->bits.proxy_ssl_connected[FIRSTSOCKET])
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#define CONNECT_SECONDARYSOCKET_PROXY_SSL()\
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(conn->http_proxy.proxytype == CURLPROXY_HTTPS &&\
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!conn->bits.proxy_ssl_connected[SECONDARYSOCKET])
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#endif /* HEADER_CURL_URL_H */
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