[aprssig] APRS activity triggering a text or email notification via internet push

[Wes Johnston, AI4PX]

I hope it won't send me a txt every time a position happens within the
bounding box??  Perhaps an 80 minute delay (to coincide with the min time to
orbit the earth for LEOs).

Wes
---
"Language shapes the way we think, and determines what we can think about."
-- B. L. Whorf



On Wed, Feb 16, 2011 at 17:54, John Gorkos <jgorkos at gmail.com> wrote:

> I agree the initial code effort is trivially easy, and this does indeed
> work.
> The goal I was shooting for was a little beyond this.  Here's the
> requirements
> doc for what I'm aiming for:
>
> *  work for multiple users, with multiple notification paths for each.
> Specifically, provide multiple email addresses and the option for an APRS
> message sent to a specific call sign.
>
> * allow for both point and area zones of interest, i.e. "within 500 meters
> of
> point x,y", or "incusion into zone defined by "x,y (NE) - x,y (SW)"
>
> * differentiate between "approaching" and "departing" (i.e. "AB0OO is
> approaching home" shouldn't trigger when I leave the house in the morning
> to
> go to work)
>
> * set up time windows for various notifications, and reset-times that
> prevent
> rapid-fire messaging (unfortunately, your Perl script will page me at 0200,
> when I really don't want to be woken up).
>
> The design of a set of business rules, a method for storing those rules,
> and
> the logic to execute those rules requires some framework and some support
> code
> to go with it.  On top of that, the user interface needs to be something
> more
> than "edit this script with your hardcoded information".  Something more
> along
> the lines of "go to this web page, register as a user, select call signs
> you're interested in, select the times and other business rules you want
> applied to those callsigns, send a test message, etc" is what I'm shooting
> for.  Finally, in the end, it needs to be documented (which your Perl is,
> kudos to you) and published in a source repository so people 5 years from
> now
> can find it, modify it, extend it, or whatever.  There's nothing more
> frustrating than having a new guy join the APRS sig 10 months from now and
> ask
> this same question, and someone shoot back "yeah, there was a Perl script
> posted a few months back that does that.  Search the archives."
>
> On the other hand, quick and dirty gets the job done.  It's just
> unfortunate
> that so many good ideas die at the "quick and dirty, I scratched my itch
> you're on your own for anything else" stage.
>
> Imagine the value of being part of a road race that is supported by APRS.
>  You
> can ask the race director for his cell phone number, and then set him up to
> recieve a text message whenever the LEAD, TRAIL, or SAG tracker passes any
> number of specific points on the course...
>
> Thanks for proving it can be done in less than 60 lines of Perl, though.  I
> think all 3 of Larry Wall's "Three Virtues of a Programmer" are well
> represented here.
>
> John Gorkos
>
> On Wednesday, February 16, 2011 12:09:38 Rich Mulvey wrote:
> > I hadn't followed this topic before, but if you have a machine you can
> run
> > perl on, this is trivially easy.  I just whipped up this script and
> tested
> > it.  Replace the callsign, recipient, and sender addresses, and run it
> > periodically.
> >
> > It will store the last position found for the callsign, then, then next
> > time it runs, if the lat/long differ, it will send an email.  Most cell
> > providers provide an email gateway to allow you to email SMS messages to
> > someone.
> >
> > Obviously you'd want to surpress position changes within some window (
> > i.e., less than 100 feet ).  Plus probably some more error checking.  ;-)
> >
> > ---
> > #!/usr/bin/perl
> >
> > use strict;
> > use Ham::APRS::LastPacket;
> > use Storable;
> > use Email::Sender::Simple qw(sendmail);
> > use Email::Simple;
> > use Email::Simple::Creator;
> >
> >
> > my $callsign = "MYCALLSIGN";
> > my $recipient = "blah\@blah.com";
> > my $sender = "myposition\@blah.com";
> > my %lastPosition;
> >
> > my $aprs = Ham::APRS::LastPacket->new;
> > $aprs->set_callsign($callsign);
> >
> > # Load the last position, if we've stored it
> > if( -r $callsign ) {
> >    %lastPosition = %{retrieve $callsign};
> > }
> >
> >
> > my $packet = $aprs->get_data;
> > die $aprs->error_message if $aprs->is_error;
> >
> > # get the position report
> > print "$callsign is at
> >
> $packet->{position}->{latitude}->{degrees},$packet->{position}->{longitude}
> > ->{degrees}\n";
> >
> > # If the position has changed, send out an email
> > if( ( $lastPosition{latitude} !=
> $packet->{position}->{latitude}->{degrees}
> > ) ||
> >     ( $lastPosition{'longitude'} !=
> > $packet->{position}->{longitude}->{degrees} ) ) {
> >    sendEmail();
> > }
> >
> > # Save the position
> > $lastPosition{'latitude'} = $packet->{position}->{latitude}->{degrees};
> > $lastPosition{'longitude'} = $packet->{position}->{longitude}->{degrees};
> > store \%lastPosition, $callsign;
> >
> >
> > sub sendEmail {
> >    print "Sending a movement report\n";
> >
> >    my $email = Email::Simple->create(
> >     header => [
> >     To      => $recipient,
> >     From    => $sender,
> >     Subject => "$callsign position report",
> >     ],
> >     body => "$callsign has moved",
> >    );
> >
> > sendmail($email);
> > }
> >
> > On Wed, Feb 16, 2011 at 12:19 AM, Steve Hanis <dmesteve at gmail.com>
> wrote:
> > > On Tue, Feb 15, 2011 at 10:22 PM, John Gorkos <jgorkos at gmail.com>
> wrote:
> > > > On Friday, February 11, 2011 09:51:24 AM Steve Hanis wrote:
> > > > > Hi John,
> > > > >
> > > > > I have no intention of irritating anyone one the list, and
> apologize
> > > > > if I have done so. I haven't written any programs since college
> back
> > > > > in the early 90's and don't consider myself programmer, I use Linux
> > > > > occasionally. I was made aware of this list after I posed this same
> > > > > question on the APRS Yahoo group.
> > > > >
> > > > > What I am looking for is something like what is described on
> > > > > http://www.aprs.org/aprs-messaging.html:
> > > > >
> > > > > "APRS Messages to Your Cellphone: . N3FLR Frank Rossi reports that
> he
> > > > > uses "YahooAlert" to send all of his APRS messages to his cell
> phone.
> > > > > First, Find-U has RSS output capability so he has his computer RSS
> > > > > Feed Reader watching his Feed From FindU, and YahooAlert also
> > > > > watching. After setting up Yahoo Alert for a pager, he uses his
> > > > > phone's text e-mail address such as xxxxxxxxxx at txt.att.net . Then
> you
> > > > > just need to know what your phone's "e-mail address" to "text
> > > > > address" is. You don't need mobile internet to do it this way, just
> > > > > text ability. That will work with a text pager also. . When FINDU
> > > > > sees a message to him on APRS it generates an RSS Feed that now
> > > > > Yahoo-Alerts is watching. YahooAlerts then forwards the RSS Message
> > > > > as Text to his cell phone. Although this is only one way
> > > > > communications, it still lets him receive his APRS messages. He
> also
> > > > > says that you can set up RSS feeds from FindU for weather alerts,
> or
> > > > > APRS users X amount of miles from you. You can make the miles
> > > > > anything you want. He has not tried that function yet."
> > > > >
> > > > > I've tried this to no avail, but was wondering if anyone else had
> > > > > come up with a different way to accomplish the same goal. I have no
> > > > > commercial interest in this, I just want to be pinged on my cell
> > > > > phone (SMS, Email, IM) when my friend goes mobile, or for special
> > > > > cases like a high altitude balloon with a known call sign goes
> > > > > active on APRS.
> > > > >
> > > > > Kind Regards,
> > > > > Steve
> > > > >
> > > > > On Fri, Feb 11, 2011 at 7:35 AM, John Gorkos <jgorkos at gmail.com>
> > >
> > > wrote:
> > > > > > It "can" be done.  It hasn't yet.  What you're asking for is 4-6
> > >
> > > hours of
> > >
> > > > > > custom coding (mostly for the web interface).  Do you have a web
> > >
> > > server
> > >
> > > > > > that can host something like this?  I've got a few hours this
> > > > > > weekend
> > >
> > > I
> > >
> > > > > > can use to code this.
> > > > > > Let me make sure I've got the requirements right:
> > > > > > You want a web interface that allows you to enter a "monitored"
> > > > > > call sign, and an email address to send a message to when that
> > > > > > position report from that monitored callsign indicates movement.
> > > > > > You want one message only.  Then, time passes and the monitored
> > > > > > station stops
> > >
> > > moving.
> > >
> > > > > >  Once the station starts moving again, you want another text
> > > > > >  message.
> > > > > >
> > > > > > The SMS messages will have to be sent via email (i.e.
> > > > > > 2125551212 at sms.verizon.com), since a direct SMS interface is
> spendy
> > >
> > > and
> > >
> > > > > > less standard.
> > > > > >
> > > > > > Do you have any programming skills you could apply to this?  Web
> > >
> > > design,
> > >
> > > > > > maybe?  I hate web design, but the back-end portion isn't too
> > >
> > > difficult.
> > >
> > > > > >  This request will probably irritate some people on this list,
> > > > > >  FWIW. Everyone has an imaginary line they draw between "ham
> > > > > >  radio" and
> > > > > >
> > > > > > "commercial radio and internet."  Using your cellphone/commercial
> > >
> > > radio
> > >
> > > > > > to get updates about APRS happenings on ham radio is probably on
> > > > > > the
> > >
> > > far
> > >
> > > > > > side of some peoples' lines.
> > > > > >
> > > > > > John Gorkos
> > > > > > AB0OO
> > > > > >
> > > > > > On Thursday, February 10, 2011 18:48:04 Steve Hanis wrote:
> > > > > > > Thank you for your reply. I am looking for a way to trigger an
> > >
> > > email,
> > >
> > > > > > > IM or SMS using existing web interfaces. A way to "push" an
> alert
> > >
> > > to
> > >
> > > > > > > me when I am working or relaxing at home. Can this be done?
> > > > > > > Kind Regards,
> > > > > > > Steve
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > On Tue, Feb 8, 2011 at 10:41 AM, Guido Trentalancia
> > > > > > > <iz6rdb at trentalancia.com
> > > > > > >
> > > > > > > > wrote:
> > > > > > > >
> > > > > > > > Hello Steve !
> > > > > > > >
> > > > > > > > On Mon, 07/02/2011 at 22.19 -0600, Steve Hanis wrote:
> > > > > > > > > A friend and I just starting using APRS.  Is there way to
> > >
> > > trigger a
> > >
> > > > > > > > > SMS
> > > > > > > >
> > > > > > > > text
> > > > > > > >
> > > > > > > > > message or email via Internet monitoring when his APRS goes
> > >
> > > active
> > >
> > > > > > > > > or
> > > > > > > >
> > > > > > > > moving?
> > > > > > > >
> > > > > > > > > This would let me know he is mobile and available to chat
> or
> > >
> > > view
> > >
> > > > > > > > > his
> > > > > > > >
> > > > > > > > location
> > > > > > > >
> > > > > > > > > on a map. My apologies if the question is too simplistic
> for
> > >
> > > this
> > >
> > > > > > > > > list, I am a newbie.
> > > > > > > > >
> > > > > > > > > Thanks,
> > > > > > > > > Steve
> > > > > > > > > AB5ID
> > > > > > > >
> > > > > > > > Suppose your friend has call AB4HB, then you could use
> > > > > > > > something like:
> > > > > > > >
> > > > > > > > FROMEMAILADDRESS=dmesteve at gmail.com
> > > > > > > > MYEMAILADDRESS=dmesteve at gmail.com
> > > > > > > > APRSCALLSIGN=AB4HB
> > > > > > > > SMTP_SERVER=smtp.ab5id.org
> > > > > > > > axlisten -a | grep -q " fm $APRSCALLSIGN to " && echo "An
> APRS
> > >
> > > packet
> > >
> > > > > > > > from $APRSCALLSIGN has been heard" > /tmp/aprs_message.txt &&
> > > > > > > > env MAILRC=/dev/null from=$FROMEMAILADDRESS smtp=$SMTP_SERVER
> > > > > > > > mailx
> > >
> > > -v -n
> > >
> > > > > > > > -s "Mail from APRS" $MYEMAILADDRESS < /tmp/aprs_message.txt
> &&
> > > > > > > > rm
> > >
> > > -f
> > >
> > > > > > > > /tmp/aprs_message.txt
> > > > > > > >
> > > > > > > > Note that APRSCALLSIGN is case sensitive (unless you pass the
> > > > > > > > -i option to grep). Note that SMTP_SERVER needs to be defined
> > >
> > > according
> > >
> > > > > > > > to your actual smtp server.
> > > > > > > > Most importantly note that the above will send out an email
> > >
> > > message
> > >
> > > > > > > > for every packet that is received from APRSCALLSIGN and this
> > >
> > > might
> > >
> > > > > > > > not be desirable as there might be a lot of packets coming
> > > > > > > > continuously (so you might do things better with some extra
> > > > > > > > code that checks whether a message has already been sent
> > > > > > > > recently, for example by creating a temporary file each time
> a
> > > > > > > > message is sent
> > >
> > > and
> > >
> > > > > > > > then checking that the timestamp of such file is not too
> recent
> > > > > > > > before sending a new email message).
> > > > > > > >
> > > > > > > > Or otherwise you can download a tiny program that I wrote
> > > > > > > > (ax_emergency_listen) which is generally used to monitor APRS
> > > > > > > > emergency packets and adapt it to your needs (by modifying
> the
> > > > > > > > C source code):
> > > > > > > >
> > > > > > > > http://iz6rdb.trentalancia.com/en/aprs_igate.html
> > > > > > > >
> > > > > > > > 73,
> > > > > > > >
> > > > > > > > Guido IZ6RDB
> > > >
> > > > Believe it or not, I've not forgotten about this.  I've spent about
> 10
> > >
> > > hours
> > >
> > > > so far doing design and outline work on the code.  I've also had to
> > > > hunt
> > >
> > > down
> > >
> > > > some extremely nasty off-by-one bugs in the Java AVRS position
> parsers.
> > >
> > >  Now
> > >
> > > > that I'm getting reliable, accurate positions from all 4 types of
> > >
> > > position
> > >
> > > > packets (compressed, uncompressed, MICe, and raw NMEA) I can move on
> to
> > > > alarms.
> > > > In the AVRS sourceforge repo, there is a new package called Wedjet
> > > > (net.ab0oo.aprs.wedjet) that contains some rudimentary code for
> > >
> > > monitoring
> > >
> > > > positions.  The alerting portion will come later.  I'm using a
> > >
> > > Spring-injected
> > >
> > > > Jetty container as a base web-server, so the whole thing can be self-
> > > > contained.
> > > > Give me another few days and I'll have something you can play with.
> > > > Once
> > >
> > > we
> > >
> > > > reach a stable beta point, we'll look for hosting options.
> > > >
> > > > John Gorkos
> > > > AB0OO
> > >
> > > John,
> > >
> > > A sincere thank you. I had no idea how much work would be involved.
> > >
> > > Kind Regards,
> > > Steve
> > > AB5ID
> > >
> > > _______________________________________________
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> > > aprssig at tapr.org
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>
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