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.\" You can view this file with:
.\" nroff -man [file]
.\" $Id$
.\"
.TH curl_version_info 3 "30 Sep 2002" "libcurl 7.10" "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; /* 0 - this kind of struct */
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 */
char *libz_version; /* human readable string */
const char *protocols[]; /* list of protocols */
} curl_version_info_data;
.fi
\fIage\fP describes what kind of struct this is. It is always 0 now. In a
future libcurl, if this struct changes, this age counter may be increased, and
then the struct for number 1 will look different (except for this first struct
field).
\fIversion\fP is just an ascii string for the libcurl version.
\fIversion_num\fP is a 6 digit hexadecimal number created like this: <2 digits
major number> | <2 digits minor number> | <2 digits 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:
.TP 5.5
.B CURL_VERSION_IPV6
supports IPv6
.TP
.B CURL_VERSION_KERBEROS4
supports kerberos4 (when using FTP)
.TP
.B CURL_VERSION_SSL
supports SSL (HTTPS/FTPS)
.TP
.B CURL_VERSION_LIBZ
supports HTTP deflate using libz
.PP
\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
.SH BUGS
No known bugs.
|
