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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.
94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
#ifndef HEADER_CURL_GTLS_H
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#define HEADER_CURL_GTLS_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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#ifdef USE_GNUTLS
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#include "urldata.h"
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int Curl_gtls_init(void);
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int Curl_gtls_cleanup(void);
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CURLcode Curl_gtls_connect(struct connectdata *conn, int sockindex);
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CURLcode Curl_gtls_connect_nonblocking(struct connectdata *conn,
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int sockindex,
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bool *done);
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bool Curl_gtls_data_pending(const struct connectdata *conn,
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int connindex);
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/* close a SSL connection */
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void Curl_gtls_close(struct connectdata *conn, int sockindex);
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void Curl_gtls_session_free(void *ptr);
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size_t Curl_gtls_version(char *buffer, size_t size);
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int Curl_gtls_shutdown(struct connectdata *conn, int sockindex);
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int Curl_gtls_random(struct Curl_easy *data,
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unsigned char *entropy,
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size_t length);
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void Curl_gtls_md5sum(unsigned char *tmp, /* input */
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size_t tmplen,
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unsigned char *md5sum, /* output */
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size_t md5len);
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void Curl_gtls_sha256sum(const unsigned char *tmp, /* input */
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size_t tmplen,
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unsigned char *sha256sum, /* output */
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size_t sha256len);
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bool Curl_gtls_cert_status_request(void);
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/* Set the API backend definition to GnuTLS */
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#define CURL_SSL_BACKEND CURLSSLBACKEND_GNUTLS
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/* this backend supports the CAPATH option */
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#define have_curlssl_ca_path 1
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/* this backend supports CURLOPT_CERTINFO */
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#define have_curlssl_certinfo 1
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/* this backend supports CURLOPT_PINNEDPUBLICKEY */
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#define have_curlssl_pinnedpubkey 1
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/* API setup for GnuTLS */
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#define curlssl_init Curl_gtls_init
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#define curlssl_cleanup Curl_gtls_cleanup
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#define curlssl_connect Curl_gtls_connect
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#define curlssl_connect_nonblocking Curl_gtls_connect_nonblocking
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#define curlssl_session_free(x) Curl_gtls_session_free(x)
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#define curlssl_close_all(x) ((void)x)
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#define curlssl_close Curl_gtls_close
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#define curlssl_shutdown(x,y) Curl_gtls_shutdown(x,y)
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#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
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#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
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#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
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#define curlssl_version Curl_gtls_version
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#define curlssl_check_cxn(x) ((void)x, -1)
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#define curlssl_data_pending(x,y) Curl_gtls_data_pending(x,y)
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#define curlssl_random(x,y,z) Curl_gtls_random(x,y,z)
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#define curlssl_md5sum(a,b,c,d) Curl_gtls_md5sum(a,b,c,d)
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#define curlssl_sha256sum(a,b,c,d) Curl_gtls_sha256sum(a,b,c,d)
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#define curlssl_cert_status_request() Curl_gtls_cert_status_request()
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#endif /* USE_GNUTLS */
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#endif /* HEADER_CURL_GTLS_H */
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