e7da67f5d3
As this has been present for SOCKSv5 proxy since v7.19.4 and for IMAP, POP3 and SMTP authentication since v7.38.0.
164 lines
6.7 KiB
Groff
164 lines
6.7 KiB
Groff
.\" **************************************************************************
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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 - 2014, 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 http://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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.\"
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.TH curl_version_info 3 "2 Aug 2014" "libcurl 7.38.0" "libcurl Manual"
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.SH NAME
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curl_version_info - returns run-time libcurl version info
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.SH SYNOPSIS
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.B #include <curl/curl.h>
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.sp
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.BI "curl_version_info_data *curl_version_info( CURLversion "type ");"
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.ad
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.SH DESCRIPTION
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Returns a pointer to a filled in static struct with information about various
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features in the running version of libcurl. \fItype\fP should be set to the
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version of this functionality by the time you write your program. This way,
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libcurl will always return a proper struct that your program understands,
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while programs in the future might get a different
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struct. \fBCURLVERSION_NOW\fP will be the most recent one for the library you
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have installed:
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data = curl_version_info(CURLVERSION_NOW);
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Applications should use this information to judge if things are possible to do
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or not, instead of using compile-time checks, as dynamic/DLL libraries can be
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changed independent of applications.
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The curl_version_info_data struct looks like this
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.nf
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typedef struct {
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CURLversion age; /* see description below */
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/* when 'age' is 0 or higher, the members below also exist: */
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const char *version; /* human readable string */
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unsigned int version_num; /* numeric representation */
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const char *host; /* human readable string */
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int features; /* bitmask, see below */
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char *ssl_version; /* human readable string */
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long ssl_version_num; /* not used, always zero */
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const char *libz_version; /* human readable string */
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const char **protocols; /* list of protocols */
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/* when 'age' is 1 or higher, the members below also exist: */
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const char *ares; /* human readable string */
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int ares_num; /* number */
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/* when 'age' is 2 or higher, the member below also exists: */
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const char *libidn; /* human readable string */
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/* when 'age' is 3 or higher (7.16.1 or later), the members below also
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exist */
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int iconv_ver_num; /* '_libiconv_version' if iconv support enabled */
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const char *libssh_version; /* human readable string */
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} curl_version_info_data;
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.fi
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\fIage\fP describes what the age of this struct is. The number depends on how
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new the libcurl you're using is. You are however guaranteed to get a struct that you
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have a matching struct for in the header, as you tell libcurl your "age" with
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the input argument.
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\fIversion\fP is just an ascii string for the libcurl version.
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\fIversion_num\fP is a 24 bit number created like this: <8 bits major number>
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| <8 bits minor number> | <8 bits patch number>. Version 7.9.8 is therefore
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returned as 0x070908.
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\fIhost\fP is an ascii string showing what host information that this libcurl
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was built for. As discovered by a configure script or set by the build
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environment.
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\fIfeatures\fP can have none, one or more bits set, and the currently defined
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bits are:
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.RS
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.IP CURL_VERSION_IPV6
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supports IPv6
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.IP CURL_VERSION_KERBEROS4
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supports kerberos4 (when using FTP)
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.IP CURL_VERSION_SSL
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supports SSL (HTTPS/FTPS) (Added in 7.10)
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.IP CURL_VERSION_LIBZ
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supports HTTP deflate using libz (Added in 7.10)
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.IP CURL_VERSION_NTLM
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supports HTTP NTLM (added in 7.10.6)
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.IP CURL_VERSION_GSSNEGOTIATE
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supports HTTP GSS-Negotiate (added in 7.10.6)
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.IP CURL_VERSION_DEBUG
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libcurl was built with debug capabilities (added in 7.10.6)
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.IP CURL_VERSION_CURLDEBUG
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libcurl was built with memory tracking debug capabilities. This is mainly of
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interest for libcurl hackers. (added in 7.19.6)
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.IP CURL_VERSION_ASYNCHDNS
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libcurl was built with support for asynchronous name lookups, which allows
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more exact timeouts (even on Windows) and less blocking when using the multi
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interface. (added in 7.10.7)
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.IP CURL_VERSION_SPNEGO
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libcurl was built with support for SPNEGO authentication (Simple and Protected
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GSS-API Negotiation Mechanism, defined in RFC 2478.) (added in 7.10.8)
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.IP CURL_VERSION_LARGEFILE
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libcurl was built with support for large files. (Added in 7.11.1)
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.IP CURL_VERSION_IDN
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libcurl was built with support for IDNA, domain names with international
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letters. (Added in 7.12.0)
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.IP CURL_VERSION_SSPI
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libcurl was built with support for SSPI. This is only available on Windows and
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makes libcurl use Windows-provided functions for Kerberos, NTLM, SPNEGO and
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SASL DIGEST-MD5 authentication. It also allows libcurl to use the current user
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credentials without the app having to pass them on. (Added in 7.13.2)
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.IP CURL_VERSION_GSSAPI
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libcurl was built with support for GSS-API. This makes libcurl use provided
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functions for Kerberos and SPNEGO authentication. It also allows libcurl
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to use the current user credentials without the app having to pass them on.
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(Added in 7.38.0)
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.IP CURL_VERSION_CONV
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libcurl was built with support for character conversions, as provided by the
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CURLOPT_CONV_* callbacks. (Added in 7.15.4)
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.IP CURL_VERSION_TLSAUTH_SRP
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libcurl was built with support for TLS-SRP. (Added in 7.21.4)
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.IP CURL_VERSION_NTLM_WB
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libcurl was built with support for NTLM delegation to a winbind helper.
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(Added in 7.22.0)
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.IP CURL_VERSION_HTTP2
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libcurl was built with support for HTTP2.
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(Added in 7.33.0)
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.RE
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\fIssl_version\fP is an ASCII string for the OpenSSL version used. If libcurl
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has no SSL support, this is NULL.
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\fIssl_version_num\fP is always 0.
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\fIlibz_version\fP is an ASCII string (there is no numerical version). If
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libcurl has no libz support, this is NULL.
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\fIprotocols\fP is a pointer to an array of char * pointers, containing the
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names protocols that libcurl supports (using lowercase letters). The protocol
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names are the same as would be used in URLs. The array is terminated by a NULL
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entry.
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.SH RETURN VALUE
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A pointer to a curl_version_info_data struct.
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.SH "SEE ALSO"
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\fIcurl_version(3)\fP
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