mirror of
https://github.com/curl/curl.git
synced 2024-11-21 01:16:58 +08:00
117 lines
4.4 KiB
Groff
117 lines
4.4 KiB
Groff
.\" You can view this file with:
|
|
.\" nroff -man [file]
|
|
.\" $Id$
|
|
.\"
|
|
.TH curl_version_info 3 "11 May 2004" "libcurl 7.12" "libcurl Manual"
|
|
.SH NAME
|
|
curl_version_info - returns run-time libcurl version info
|
|
.SH SYNOPSIS
|
|
.B #include <curl/curl.h>
|
|
.sp
|
|
.BI "curl_version_info_data *curl_version_info( CURLversion "type ");"
|
|
.ad
|
|
.SH DESCRIPTION
|
|
Returns a pointer to a filled in struct with information about various
|
|
run-time features in libcurl. \fItype\fP should be set to the version of this
|
|
functionality by the time you write your program. This way, libcurl will
|
|
always return a proper struct that your program understands, while programs in
|
|
the future might get an different struct. CURLVERSION_NOW will be the most
|
|
recent one for the library you have installed:
|
|
|
|
data = curl_version_info(CURLVERSION_NOW);
|
|
|
|
Applications should use this information to judge if things are possible to do
|
|
or not, instead of using compile-time checks, as dynamic/DLL libraries can be
|
|
changed independent of applications.
|
|
|
|
The curl_version_info_data struct looks like this
|
|
|
|
.nf
|
|
typedef struct {
|
|
CURLversion age; /* see description below */
|
|
|
|
/* when 'age' is 0 or higher, the members below also exist: */
|
|
const char *version; /* human readable string */
|
|
unsigned int version_num; /* numeric representation */
|
|
const char *host; /* human readable string */
|
|
int features; /* bitmask, see below */
|
|
char *ssl_version; /* human readable string */
|
|
long ssl_version_num; /* number */
|
|
const char *libz_version; /* human readable string */
|
|
const char **protocols; /* list of protocols */
|
|
|
|
/* when 'age' is 1 or higher, the members below also exist: */
|
|
const char *ares; /* human readable string */
|
|
int ares_num; /* number */
|
|
|
|
/* when 'age' is 2 or higher, the member below also exists: */
|
|
const char *libidn; /* human readable string */
|
|
|
|
} curl_version_info_data;
|
|
.fi
|
|
|
|
\fIage\fP describes what age of this struct this is. The number depends on how
|
|
new libcurl you're using. You are however guaranteed to get a struct that you
|
|
have a matching struct for in the header, as you tell libcurl your "age" with
|
|
the input argument.
|
|
|
|
\fIversion\fP is just an ascii string for the libcurl version.
|
|
|
|
\fIversion_num\fP is a 24 bit number created like this: <8 bits major number>
|
|
| <8 bits minor number> | <8 bits patch number>. Version 7.9.8 is therefore
|
|
returned as 0x070908.
|
|
|
|
\fIhost\fP is an ascii string showing what host information that this libcurl
|
|
was built for. As discovered by a configure script or set by the build
|
|
environment.
|
|
|
|
\fIfeatures\fP can have none, one or more bits set, and the currently defined
|
|
bits are:
|
|
.RS
|
|
.IP CURL_VERSION_IPV6
|
|
supports IPv6
|
|
.IP CURL_VERSION_KERBEROS4
|
|
supports kerberos4 (when using FTP)
|
|
.IP CURL_VERSION_SSL
|
|
supports SSL (HTTPS/FTPS)
|
|
.IP CURL_VERSION_LIBZ
|
|
supports HTTP deflate using libz
|
|
.IP CURL_VERSION_NTLM
|
|
supports HTTP NTLM (added in 7.10.6)
|
|
.IP CURL_VERSION_GSSNEGOTIATE
|
|
supports HTTP GSS-Negotiate (added in 7.10.6)
|
|
.IP CURL_VERSION_DEBUG
|
|
libcurl was built with extra debug capabilities built-in. This is mainly of
|
|
interest for libcurl hackers. (added in 7.10.6)
|
|
.IP CURL_VERSION_ASYNCHDNS
|
|
libcurl was built with support for asynchronous name lookups, which allows
|
|
more exact timeouts (even on Windows) and less blocking when using the multi
|
|
interface. (added in 7.10.7)
|
|
.IP CURL_VERSION_SPNEGO
|
|
libcurl was built with support for SPNEGO authentication (Simple and Protected
|
|
GSS-API Negotiation Mechanism, defined in RFC 2478.) (added in 7.10.8)
|
|
.IP CURL_VERSION_LARGEFILE
|
|
libcurl was built with support for large files.
|
|
.IP CURL_VERSION_IDN
|
|
libcurl was built with support for IDNA, domain names with international
|
|
letters.
|
|
.RE
|
|
\fIssl_version\fP is an ascii string for the OpenSSL version used. If libcurl
|
|
has no SSL support, this is NULL.
|
|
|
|
\fIssl_version_num\fP is the numerical OpenSSL version value as defined by the
|
|
OpenSSL project. If libcurl has no SSL support, this is 0.
|
|
|
|
\fIlibz_version\fP is an ascii string (there is no numerical version). If
|
|
libcurl has no libz support, this is NULL.
|
|
|
|
\fIprotocols\fP is a pointer to an array of char * pointers, containing the
|
|
names protocols that libcurl supports (using lowercase letters). The protocol
|
|
names are the same as would be used in URLs. The array is terminated by a NULL
|
|
entry.
|
|
.SH RETURN VALUE
|
|
A pointer to a curl_version_info_data struct.
|
|
.SH "SEE ALSO"
|
|
\fIcurl_version(3)\fP
|
|
|