Free callsign lookup software for linux

Geo::Lookup::ByTime is a Perl module to lookup location by time.

SYNOPSIS

use Geo::Lookup::ByTime;

$lookup = Geo::Lookup::ByTime->new( @points );
my $pt = $lookup->nearest( $tm );

Given a set of timestamped locations guess the location at a particular time. This is a useful operation for, e.g., adding location information to pictures based on their timestamp and a GPS trace that covers the same time period.

INTERFACE

new( [ points ] )

Create a new object optionally supplying a list of points. The points may be supplied as an array or as a reference to an array. Each point may be a reference to a hash containing at least the keys lat, lon and time or a reference to an object that supports accessor methods called latitude, longitude and time.

If a coderef is supplied it is assumed to be an iterator that may be called repeatedly to yield a set of points.

add_points( [ points ] )

Add points. The specification for what constitutes a point is the same as for new.

nearest( $time [ , $max_dist ] )

Return a hash indicating the estimated position at the specified time. The returned hash has lat, lon and time keys like this:

my $best = {
lat => 54.29344,
lon => -2.02393,
time => $time
};

Returns undef if the position cant be computed. By default a position will be calculated for any point that lies within the range of time covered by the reference points. Optionally $max_dist may be specified in which case undef will be returned if the closest real point is more than that many metres away from the computed point.
If the requested time coincides exactly with the timestamp of one of the points the returned point will be at the same location as the matching point. If the time falls between the timestamps of two points the returned point will be linearly interpolated from those two points.

In an array context returns a list containing the synthetic point at the specified time (i.e. the value that would be returned in scalar context), the closest real point and the distance between the two in metres

my ($best, $nearest, $dist) = $lookup->nearest( $tm );

get_points()

Return a reference to an array containing all the points in ascending time order.

time_range()

Return as a two element list the time range from earliest to latest of the points in the index. Returns undef if the index is empty.

hav_distance($pt, ...)

Exportable function. Computes the Haversine distance in metres along the line described by the points passed in. Points must be references to hashes with keys lat and lon.

Bitcollider provides the bitcollider can be used to lookup/submit files to Bitzi.
The Bitcollider utility allows users to uniquely identify and submit files to Bitzis community metadatabase project.
The Bitcollider can be used to identify any local file and has support for extracting metadata from MP3, WAV, Vorbis, JPEG, PNG, GIF, AVI, MPEG-1, MPEG-2, and QuickTime files.
Users can quickly look up all the known information about the given file in Bitzis metadatabase.
Enhancements:
- The kzhash identifier used by Kazaa 2.6 and up is now calculated. (As a result, MAGNET links at Bitzi can include this identifier and work with Kazaa.)
- A video format plugin now extracts and submits information such as framerate, framesize, duration,bitrate, and codec from most AVI, MPEG1/2, and QuickTime videos.
- A problem in the original construction of the TigerTree hash value has been corrected. (Only values from updated software display at theBitzi website.)
- Calculation of MD5 and CRC32 values is now optional.

libdnet provides a simplified, portable interface to several low-level networking routines.
Main features:
- network address manipulation
- kernel arp(4) cache and route(4) table lookup and manipulation
- network firewalling (IP filter, ipfw, ipchains, pf, PktFilter, ...)
- network interface lookup and manipulation
- IP tunnelling (BSD/Linux tun, Universal TUN/TAP device)
- raw IP packet and Ethernet frame transmission
Supported languages:
- C, C++
- Python
- Perl, Ruby (see below)
Supported platforms:
- BSD (OpenBSD, FreeBSD, NetBSD, BSD/OS)
- Linux (Redhat, Debian, Slackware, etc.)
- MacOS X
- Windows (NT/2000/XP)
- Solaris
- IRIX
- HP-UX
- Tru64

DCE::ACL is a Perl interface to DCE ACL client API.

SYNOPSIS

use DCE::ACL;

$aclh = DCE::ACL->bind($object);

DCE::ACL provides a Perl interface to the sec_acl_* client API. As the sec_acl_list_t structure is rather complex, additional classes and methods are provided so Perl scripts can deal with it in a reasonable fashion.

DCE::ACL::handle methods

DCE::ACL::handle->bind

See DCE::ACL->bind.

$aclh->num_acls

Returns the number of acls in the sec_acl_list_t structure.

$num = $aclh->num_acls

$aclh->get_manager_types

Equivalent to the sec_acl_get_manager_types function. $manager_types is a array reference.

($num_used, $num_types, $manager_types, $status) =
$aclh->get_manager_types();

If called in a scalar context, only the $manager_types array reference is returned.

$manager = $achl->get_manager_types->[0]; #first manager
$aclh->get_access

Equivalent to the sec_acl_get_access function.

($permset, $status) = $aclh->get_access($manager);
$aclh->get_printstring

Equivalent to the sec_acl_get_printstring function.

$printstrings is an array reference of hash references.
($chain, $mgr_info, $tokenize, $total, $num, $printstrings, $status) =
$aclh->get_printstring($manager);

If called in a scalar context, only the $printstrings reference is returned.

$printstrings = $aclh->get_printstring($manager);

foreach $str (@$printstrings) {
$permstr .=
($str->{permissions} & $entry->perms) ?
$str->{printstring} : "-";
}
$aclh->test_access

Equivalent to the sec_acl_test_access function.

($ok, $status) = $aclh->test_access($manager, $perms);
$aclh->replace

Equivalent to the sec_acl_replace function.

$status = $aclh->replace($manager, $aclh->type_object, $list);
$aclh->lookup

Equivalent to the sec_acl_lookup function. $list is a reference to a sec_acl_list_t structure, blessed into the DCE::ACL::list class. $type is an optional argument which defaults to DCE::ACL-type_object>.

($list, $status) = $aclh->lookup($manager, [$type]);
$aclh->new_list

This method does a lookup, deleting all entries and returns the empty list. $type is an optional argument which defaults to DCE::ACL-type_object>.

($list, $status) = $aclh->new_list($manager, [$type]);