Date: Wed, 10 May 1995 15:58:58 PDT From: Bill Fenner <fenner@parc.xerox.com> To: Charles Henrich <henrich@crh.cl.msu.edu> Cc: freebsd-hackers@FreeBSD.org Subject: Re: passing parameters to vat from sd ? Message-ID: <95May10.155900pdt.49859@crevenia.parc.xerox.com> In-Reply-To: Your message of "Tue, 09 May 95 17:04:29 PDT." <199505100004.RAA00563@freefall.cdrom.com>
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[-- Attachment #1 --]
In message <199505100004.RAA00563@freefall.cdrom.com> you write:
>Has anyone out there figured out how to make SD spawn VAT with th -U
>/tmp/vatsock so we can use this thing?
I don't use vat under FreeBSD yet, but here is my .sd.tcl for example purposes
(it has some useful features, if you can figure them out =)
Bill
[-- Attachment #2 --]
# $Header: sd_start.tcl,v 1.2 93/02/28 23:02:25 van Locked $ (LBL)
#
# tcl 'hooks' invoked when sd takes some action on a session.
#
# sd will invoke:
# start_session when the user asks to 'open' (start) a session
# create_session just after the user creates a new session
# heard_session when announcement for a session is first heard
# delete_session when the user or a timeout deletes a session
#
# When any of the above are invoked, the global array sd_sess
# contains all the information about the session to be started:
# sd_sess(name)
# sd_sess(description)
# sd_sess(address)
# sd_sess(ttl)
# sd_sess(creator)
# sd_sess(creator_id)
# sd_sess(source_id)
# sd_sess(arrival_time)
# sd_sess(start_time)
# sd_sess(end_time)
# sd_sess(attributes) (list of session attributes)
# sd_sess(media) (list of media names)
#
# For each media name there is an array containing the information
# about that media:
# sd_$media(port)
# sd_$media(conf_id)
# sd_$media(attributes) (list of media attributes)
#
# Media and session attributes are strings of the form "name" or
# "name:value".
#
# Some global state information is available in array sd_priv:
# sd_priv(audio) (= 0 if audio disabled with -a)
# sd_priv(video) (= 0 if video disabled with -v)
# sd_priv(whiteboard) (= 0 if wb disabled with -w)
set sd_priv(mcm) 1
set sd_priv(mumble) 1
# Point keyfile to a file mapping session names to encryption keys
# keyfile should look like this:
#
# set {key(session name)} {session key}
#
set keyfile ~/private/keys.tcl
if {[file exists $keyfile]} {
source $keyfile
}
set ipc_chan 0
proc get_channel { confid } {
global ipc_tab ipc_chan
if { [info exists ipc_tab($confid)] } {
return $ipc_tab($confid)
}
incr ipc_chan
if { $ipc_chan > 300 } {
set ipc_chan 1
}
set ipc_tab($confid) $ipc_chan
return $ipc_chan
}
proc start_video {} {
global sd_sess sd_video key
set videofmt "nv"
foreach a $sd_video(attributes) {
case $a {
fmt:* { set videofmt [string range $a 4 end] }
}
}
case $videofmt {
jpg {
global imm
exec $imm -p $sd_video(port) -I $sd_sess(address) \
-ttl $sd_sess(ttl) -n $sd_sess(name) &
return
}
mnm {
global mnm
exec $mnm -p $sd_video(port) -I $sd_sess(address) \
-ttl $sd_sess(ttl) -n $sd_sess(name) &
return
}
vic { }
telesia { set videofmt ivs }
nv {
global nv
if {[info exists nv]} {
exec $nv -title "nv:$sd_sess(name)" \
-ttl $sd_sess(ttl) \
$sd_sess(address) \
$sd_video(port) &
return
}
}
ivs {
global ivs
if {[info exists ivs]} {
exec $ivs -a -r -T $sd_sess(ttl) \
$sd_sess(address)/$sd_video(port) &
return
}
}
default {
puts "sd: unknown video format: $videofmt"
return
}
}
global vic
set cmd {exec nice $vic -A $videofmt -t $sd_sess(ttl) -C $sd_sess(name)}
if {[lsearch $sd_sess(media) audio] >= 0} {
set chan [get_channel $sd_sess(address)/$sd_video(port)]
append cmd { -I $chan}
}
# vic doesn't encrypt yet. Adding the -K option on the command line
# causes some somewhat amusing behavior on the part of the widgets.
# if {[info exists key($sd_sess(name))]} {
# append cmd { -K $key($sd_sess(name))}
# }
append cmd { $sd_sess(address)/$sd_video(port) &}
# puts "vic command is: $cmd"
eval $cmd
}
# set up media option menus for new session window.
set sd_menu(video) "fmt: nv vic ivs jpg mnm"
# set up the command names
set imm imm
set mnm imm
set vic vic
#
# If you don't set nv or ivs, vic will be run in that-compatibility mode.
set nv nv
#set ivs ivs
proc start_whiteboard {} {
global sd_sess sd_whiteboard wb key
set orient -l
set recvonly +r
foreach a $sd_whiteboard(attributes) {
case $a {
orient:portrait { set orient -p }
orient:landscape { set orient -l }
orient:seascape { set orient +l }
recvonly { set recvonly -r }
sendrecv { set recvonly +r }
}
}
set cmd {exec $wb -t $sd_sess(ttl) -C "wb:$sd_sess(name)" $orient \
$recvonly}
if {[info exists key($sd_sess(name))]} {
append cmd { -K $key($sd_sess(name))}
}
append cmd { $sd_sess(address)/$sd_whiteboard(port) &}
# puts "wb command is: $cmd"
eval $cmd
}
set sd_menu(whiteboard) "orient: portrait landscape seascape\nrecvonly"
proc start_audio {} {
global sd_sess sd_audio sd_video key
set audiofmt ""
set packetfmt "-n"
set priority "-P 100"
set mode "-c"
set chan 0
if {[info exists sd_sess(video)]} {
global sd_video
set chan [get_channel $sd_sess(address)/$sd_video(port)]
}
foreach a $sd_audio(attributes) {
case $a {
fmt:* { set audiofmt [string range $a 4 end] }
vt { set packetfmt "-v" }
lecture { set mode "-l" }
}
}
set confaddr [format "%s/%s/%s/%s/%s" $sd_sess(address) \
$sd_audio(port) $sd_audio(conf_id) $audiofmt $sd_sess(ttl)]
case $sd_sess(name) {
DARTnet*Audio { set priority "-P 125" }
MBONE*Robot { set priority "-P 25" }
Radio*Free*Vat { set priority "-P 10"; set mode -l }
NASA*Shuttle* { set mode -l }
*isco*eta* { set priority {-NBill Fenner - 10.X} }
}
global vat
set cmd {exec $vat -C "vat:$sd_sess(name)" $packetfmt $priority $mode}
if {[info exists key($sd_sess(name))]} {
append cmd { -K "$key($sd_sess(name))"}
}
if {[lsearch $sd_sess(media) video] >= 0} {
set chan [get_channel $sd_sess(address)/$sd_video(port)]
append cmd { -I $chan}
}
append cmd { $confaddr &}
# puts "vat command is: $cmd"
eval $cmd
}
proc start_mcm {} {
global sd_sess sd_mcm
exec xterm -T "mcm:$sd_sess(name)" -e mcm-start -sd \
$sd_sess(name) $sd_sess(description) \
$sd_sess(address) $sd_mcm(port) $sd_sess(ttl) &
}
proc start_mumble {} {
global sd_sess sd_mumble
exec xterm -T "mumble:$sd_sess(name)" -e mumble \
sd-session:$sd_sess(address):$sd_mumble(port):$sd_sess(ttl) &
}
#set mosaic Mosaic
set mosaicpid 0
proc start_session {} {
global sd_sess sd_priv mosaic mosaicpid
# start up Mosaic if there is a URL in the description.
if {[info exists mosaic] && \
[regexp {[a-zA-Z]+://[^ ]+} $sd_sess(description) url]} {
set url [string trim $url <>.]
puts "Found a URL: $url, trying to find a running Mosaic"
if {$mosaicpid == 0} {
foreach process [split [exec ps -g] "\n" ] {
# puts "ps output: $process"
if {[regexp "(\[0-9]+).*$mosaic" $process \
junk mosaicpid]} {
# puts "found a Mosaic: $mosaicpid"
break
}
}
}
if {$mosaicpid != 0} {
puts "Yes, Mosaic is running, pid $mosaicpid"
set mctrl [open "/tmp/Mosaic.$mosaicpid" w]
puts $mctrl goto
puts $mctrl $url
close $mctrl
set killresult catch {exec kill -30 $mosaicpid}
exec rm /tmp/Mosaic.$mosaicpid
if {$killresult} {
set mosaicpid 0
}
}
if {$mosaicpid == 0} {
puts "Starting a new Mosaic."
# set mosaicpid [exec $mosaic $url &]
exec $mosaic $url &
# puts "New mosaic PID is $mosaicpid"
}
}
# invoke the appropriate start proc for each of the media
# if such a proc exists and that media is enabled.
foreach m $sd_sess(media) {
if { [llength [info proc start_$m]] && $sd_priv($m) } {
start_$m
}
}
}
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