From 8924f58c370afa756fc4fd13916dfdea91d21b21 Mon Sep 17 00:00:00 2001 From: Kamil Dudka Date: Thu, 27 Apr 2017 15:18:49 +0200 Subject: CURLOPT_SOCKS5_AUTH: allowed methods for SOCKS5 proxy auth If libcurl was built with GSS-API support, it unconditionally advertised GSS-API authentication while connecting to a SOCKS5 proxy. This caused problems in environments with improperly configured Kerberos: a stock libcurl failed to connect, despite libcurl built without GSS-API connected fine using username and password. This commit introduces the CURLOPT_SOCKS5_AUTH option to control the allowed methods for SOCKS5 authentication at run time. Note that a new option was preferred over reusing CURLOPT_PROXYAUTH for compatibility reasons because the set of authentication methods allowed by default was different for HTTP and SOCKS5 proxies. Bug: https://curl.haxx.se/mail/lib-2017-01/0005.html Closes https://github.com/curl/curl/pull/1454 --- docs/libcurl/opts/CURLOPT_SOCKS5_AUTH.3 | 63 +++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 docs/libcurl/opts/CURLOPT_SOCKS5_AUTH.3 (limited to 'docs/libcurl/opts/CURLOPT_SOCKS5_AUTH.3') diff --git a/docs/libcurl/opts/CURLOPT_SOCKS5_AUTH.3 b/docs/libcurl/opts/CURLOPT_SOCKS5_AUTH.3 new file mode 100644 index 000000000..7b5e5822b --- /dev/null +++ b/docs/libcurl/opts/CURLOPT_SOCKS5_AUTH.3 @@ -0,0 +1,63 @@ +.\" ************************************************************************** +.\" * _ _ ____ _ +.\" * Project ___| | | | _ \| | +.\" * / __| | | | |_) | | +.\" * | (__| |_| | _ <| |___ +.\" * \___|\___/|_| \_\_____| +.\" * +.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, , et al. +.\" * +.\" * This software is licensed as described in the file COPYING, which +.\" * you should have received as part of this distribution. The terms +.\" * are also available at https://curl.haxx.se/docs/copyright.html. +.\" * +.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell +.\" * copies of the Software, and permit persons to whom the Software is +.\" * furnished to do so, under the terms of the COPYING file. +.\" * +.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY +.\" * KIND, either express or implied. +.\" * +.\" ************************************************************************** +.\" +.TH CURLOPT_SOCKS5_AUTH 3 "27 April 2017" "libcurl 7.55.0" "curl_easy_setopt options" +.SH NAME +CURLOPT_SOCKS5_AUTH \- set allowed methods for SOCKS5 proxy authentication +.SH SYNOPSIS +#include + +CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SOCKS5_AUTH, long bitmask); +.SH DESCRIPTION +Pass a long as parameter, which is set to a bitmask, to tell libcurl which +authentication method(s) are allowed for SOCKS5 proxy authentication. The only +supported flags are \fICURLAUTH_BASIC\fP, which allows username/password +authentication, \fICURLAUTH_GSSAPI\fP, which allows GSS-API authentication, and +\fICURLAUTH_NONE\fP, which allows no authentication. Set the actual user name +and password with the \fICURLOPT_PROXYUSERPWD(3)\fP option. +.SH DEFAULT +CURLAUTH_BASIC|CURLAUTH_GSSAPI +.SH PROTOCOLS +All +.SH EXAMPLE +.nf +CURL *curl = curl_easy_init(); +if(curl) { + curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); + + /* request to use a SOCKS5 proxy */ + curl_easy_setopt(curl, CURLOPT_PROXY, "socks5://user:pass@myproxy.com"); + + /* enable username/password authentication only */ + curl_easy_setopt(curl, CURLOPT_SOCKS5_AUTH, CURLAUTH_BASIC); + + /* Perform the request */ + curl_easy_perform(curl); +} +.fi +.SH AVAILABILITY +Added in 7.55.0 +.SH RETURN VALUE +Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or +CURLE_NOT_BUILT_IN if the bitmask contains unsupported flags. +.SH "SEE ALSO" +.BR CURLOPT_PROXY "(3), " CURLOPT_PROXYTYPE "(3)" -- cgit v1.2.3