Bug found by:
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Parse link color and width.  This allows color and width to be
correctly retrieved from save files / undolog.

Undo/Redo disabled in Edit menu if there is nothing to undo or redo.
Fixed undo for "Allign to grid"

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Bug found by: Miljenko
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After moving a ng_iface interface to another vimage, "touch" it by
doing a no-op ifconfig on it.  This was an old hack that allowed
the kernel to rename the corresponding netgraph node, so we need this
for running IMUNES with kernels older then Nov 23 2006, when the
renaming problem was fixed in the kernel.

In effect this and previous commit by Miljenko back out revision
1.36 of exec.tcl.

New menu entry "Auto rearrange.." fixed.

Node instantiation, interface creation: ifconfig command was removed?

Bug found by: Miljenko
Submitted by: Miljenko
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Import of several changes from a private tree:

- Implement canvas (re)sizing;

- Implement canvas zooming;

- Implement several synthetic topology generators (chain, star,
  cycle, wheel, cube, clique, bipartite);

- Implement a procedure and GUI hooks for selecting adjacent nodes;

- Display a grid in the canvas;

- Change the cursor to a "watch" icon during undo / redo / delete
  operations;

- Link color and "thickness" can now be configured on individual
  link basis;

- Extensive (yet not complete) indentation cleanup - we should use
  modulo 4 tab stops exclusively;

- Enclose "expr" expressions in braces, per suggestion from manual
  pages for performance improvement (though it seems that no
  no improvements can be observed);

- Remove the "Configure remote hosts" menu, given that we are
  considering different approaches for executing remote experiments.
  The "nexec" and related procedures are left untouched for now;

- Adjust default window size to cover the entire default canvas
  surface, while is should still fit into 1024x768 displays.

Fixed bug related to multiple custom configurations.
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Repaired bug related to the opening of the link configuration window.

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Added support for more (more than one) custom configurations for each node.
Configuration reading is backwards compatible with old configurations (.imn).

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ipsec.tcl enhancement

Bug found by:
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Added ipsec.tcl

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IPsec configuration.

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Given that now the kernel automatically renames netgraph interfaces
when moved from one vimage to another, remove unneeded ifconfig calls
that previously preformed this job.

Bug found by: Ivan Babic
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Implement a peer-to-peer membership daemon to be used for certain state
synchronization in future distributed / decentralized IMUNES operation.
The daemon will try to connect to remote peer(s) specified as command-line
arguments at invocation time, and form an ad-hoc peer-to-peer overlay
network with all nodes reachable via its peers.

Each node in the peer-to-peer structure is uniquely identified by its
IPv4 address.  The daemon will try to maintan a small number of direct
peerings (between two and four) between random nodes in the overlay, thus
forming a well-connected mesh over time.  Each node maintans full routing
information to all other nodes, basically in the same way as BGP does,

Implement a peer-to-peer membership daemon to be used for certain state
synchronization in future distributed / decentralized IMUNES operation.
The daemon will try to connect to remote peer(s) specified as command-line
arguments at invocation time, and form an ad-hoc peer-to-peer overlay
network with all nodes reachable via its peers.

Each node in the peer-to-peer structure is uniquely identified by its
IPv4 address.  The daemon will try to maintan a small number of direct
peerings (between two and four) between random nodes in the overlay, thus
forming a well-connected mesh over time.  Each node maintans full routing
information to all other nodes, basically in the same way as BGP does,
except that instead of AS numbers we use node ID-s (IP addresses) to
construct path vectors.  Once the routing state converges, no topology
information needs to be exchanged, except periodic keepalives used to
verify that direct peerings are active.  Hence, in steady state the
protocol is unlikely to consume any measurable network bandwidth nor
CPU time.

Besides maintaining the topology / reachability state, the daemon provides
a simple facility for nodes to announce arbitrary attributes associated
with their IDs.  The attributes will be distributed by flooding the
overlay network with new state.  Only the attribute set with the version
number greater then the currently stored one will be propagated through
the overlay, thus preventing endless loopings.  Hence, the originating
node is responsible to bump its attribs version number each time it
attempts to broadcats a new set of attributes.  In the future this part
of the protocol might need to be enhanced so that only incremental /
partial updates would need to be sent.

An application can directly interface with this "daemon" by observing
global variables "active_hosts" and "dead_hosts" which will be updated
dynamically.  For each active host the host_attrib_tbl($host_id) should
store most recent attributes, if any.  If the need arises, notification
hooks can / should be placed in ProcessAnnounce, ProcessWithraw and
ProcessAttributes procedures.

The framework was tested on our ad-hoc cluster with 1032 virtual nodes
mapped to 8 physical Pentium-4 machines.  After a relatively long initial
synchronization period (around 20 minutes, mostly CPU-bound) joins
and leaves to the overlay are processed and propagated to all members
virtually instantenously.  However, in sporadic cases topology changes
can lead to shorter periods of oscillations lasting up to 10 - 20
seconds, but those oscilations are typically observable only on a
limited set of nodes.

My initial impression is that the protocol should work fine for overlays
of up to several hundreds of nodes in size, at which point we should
investigate alternative options for maintaing the overlay coherence.

Bug found by:
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Use the (relatively) new policy mechanism for redistributing
static and connected routes to RIP / RIPng in XORP.

Bug found by:
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Bugfixes:

Resurrect header_offset setting on ng_pipe nodes, since this is required
for proper packet clasification (WFQ/DRR).

Do not attempt to update ng_pipe parameters when in edit mode.

Translate values of 0 to -1 in ng_pipe requests - required for
effectively setting the requested parameters to zero.

Bug found by: DORS / CLUC '06 workshop
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The GUI was failing to start due to the following error:

Error in startup script: can't read "execSock": no such variable

This change provides a temporary fix.

NOTE: experiment execution still does not work.

Bug found by:
Submitted by: Zrinka
Requested by:
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For each serial interface shutdown respective hdlc.
(in l3node.destroy)

Bug found by:MM
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Version number / imunes -v ---> 2006-03-06

Bug found by:
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animateCursor returned into statline procedure

Bug found by:
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Remote execution with ssh, starting and stopping nodes.

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Stops quaggaboot.sh from puting messages to standard output

Bug found by:
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Hard-code the path to quaggaboot.sh at /usr/local/bin/, since
$ROOTDIR / $LIBDIR / $BINDIR substitutions are relevant only
to the installer script.

Bug found by: Zrinka
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New version number

Bug found by:
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Returned back "animateCursor" proc. Needed in exec.tcl/statline.

In VMware, without animateCursor call in statline proc status line is blank
during experiment startup/shutdown.
In ActiveState Active Tcl animateCursor is call is not needed ?!

Bug found by:
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source code documentation

Bug found by:
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Added ns2imunes.tcl

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Bug fixing in  arrangeNodes function.

Bug: LIBDIR is "" if not set
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Boot file creation is started with command: create_conf_file and stopped with
command close_conf_file.

Bug found by:
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Remote boot.conf file creation modified.
Bug found by:
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Bug found by:
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ns2 to imunes conversion

Bug with split links fixed

Bug found by:
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For remote execution on PC quaggaboot.sh is set to /usr/local/bin/...

Bug found by:
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remote execution code cleanup

Bug found by:
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Remote execution - improved error handling

Bug found by:
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Simplified.

Bug found by:
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Source documentation for the modified files

Bug found by:
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split link bug

Bug found by:
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Removed bug in local "remote" execution.

Bug found by:
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Removed bug in .imunesrc initialization.

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Added himage (maybe it should be part of vimage?)

Bug found by:
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"himage" is used as interface to command vimage(8).
Options are the same. Hostname is used instead of vimage name.

Usage:
    himage
    himage  vi_hostname [command]
    himage  -m vi_hostname [options]
    himage  -d vi_hostname
    himage  -l [vi_hostname]
    himage  -i vi_hostname interface [target_interface]

Bug found by:
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Active remote host selection.

Bug found by:
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Active remote host selection

Bug found by:
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Shell selection for remote execution.

Bug found by:
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Shell selection for remote execution.

Active remote host selection.

Bug found by:
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Shell command changed to bash, tcsh, sh -> the first one found.

Bug found by:
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Removed bug in execSetLinkParams call

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Link parameters can now (again) be changed during simulation.
(proc execSetLinkParams)

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add vimageShellServer.sh

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Script is called from remote MS Windows GUI to create listening socket for "remote shell"

Bug found by:
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Scripts are used for remote execution.

Bug found by:
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Start imunes even if vimage utility is not installed.

Bug found by:
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boot.conf creation from remote GUI

Bug found by:
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minor corrections in remote execution

Bug found by:
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Added support for remote shell invocation from MS Windows

Bug found by:
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Removed boot.conf file format compatibility problems (CR/LF translation)

Bug found by:
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Added Shell window support for MS Windows.

Bug found by:
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Added support for user configuration file: .imunesrc or $HOME/.imunesrc

Bug found by:
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Correct version info.

Bug found by:
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Added project #IP-2004-154

Bug found by:
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Added variables used for remote execution.

Bug found by:
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Added support for remote command execution.

Bug found by:
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Added configRemoteHosts - for configuration of remote hosts IP addresses,
and selection "local execution / remote exec / editor only".

Bug found by:
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Removed explicit font declaration for status bar

Added menu entry for "Remote hosts configuration".

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Removed one level in View menu (Show).
Added "focus -force ." - needed on MS Windows

Bug found by:
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source documentation for canvas.tcl

Bug found by:
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Obtained from:

source documentation for cfgparse.tcl

Bug found by:
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Obtained from:

source documentation for imunes.tcl

Bug found by:
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Obtained from:

Script quaggaboot.sh is moved to /usr/local/bin

Bug found by:
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Obtained from:

source documentation for initgui.tcl

Bug found by:
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Obtained from:

source documentation for ipv4.tcl

Bug found by:
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source documentation for ipv6.tcl

Bug found by:
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source documentation for linkcfg.tcl file

Bug found by:
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Obtained from:

Source file documentation

Bug found by:
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In Ethereal menu display IPv4 / IPv6 addresses associated with the
target interface.

Bug found by:
Submitted by:
Requested by: Gledec
Reviewed by:
Approved by:
Obtained from:

Move proc linkByIfc from exec.tcl to linkcfg.tcl

Bug found by:
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Bugfix: opening old-style (single-canvas) config files in CLI mode should
now work.

Bug found by: Miljenko
Submitted by:
Requested by:
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Approved by:
Obtained from:

Correctly switch canvases when following cross-canvas hyperlinks
(double-clicking on pseudo-link endpoint).

Bug found by: Gordan Gledec
Submitted by:
Requested by:
Reviewed by:
Approved by:
Obtained from:

Correctly handle double-clicking on half-visible canvas "tabs".

Bug found by:
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Requested by:
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Approved by:
Obtained from:

Implement automatic scrolling of the canvas tabs line, depending on which
canvas is currently selected.

Bug found by:
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Obtained from:

Do not draw arrows on plain links, since arrows are really needed only on
pseudo links.  Maybe this could increase the speed of (re)drawing plain
links, maybe not...

Bug found by:
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Implement canvas switching by clicking on a canvas "tab" at the bottom
of the main window.

Double-click on a canvas "tab" opens up a canvas-rename dialog box.

Remove canvas switching / selection entries from the top-level canvas menu.

Add several new key bindings: Home/End switches to first/last canvas,
cursor keys scroll/pan the current viewport on the current canvas.

Bug found by:
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source documentation for nodecfg.tcl file

Bug found by:
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Obtained from:

Implement hidden key-binding for hiding pseudo links and nodes.

Bug found by:
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Fix a bug in mergeLink.

Bug found by: Gledec
Submitted by:
Requested by: Gledec
Reviewed by: Gledec
Approved by: Gledec
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Rewrite of the "move to canvas" routine.

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Bugfix - propely handle pseudo-links when moving nodes between canvases.

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full source documentation for ipv4.tcl file

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Implement link merging GUI operation for pseudo-links with both endpoints
residing in the current canvas.

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source documentation for ipv4.tcl file

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Implement link splitting in GUI, so we can have pointer-type links
connecting nodes residing in a single canvas.

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Implement a generic proc splitLink { link node_type } for splitting a link
in two.  The proc creates two nodes of type $node_type and replaces the
current $link with two new ones, connecting existing link endpoints to the
newly created nodes.

Implement a "move to another canvas" operation on selected nodes.

Speedup the loadCfg proc by a factor of two by replacing iterative removal
of existing nodes / links with an atomic clearing of *_list globals.  This
particularly speeds up the undo / redo operations which rely on loadCfg.

TODO: merging of cross-canvas links when moving existing nodes from one
canvas to another.  NB this means currently moving "pseudo" nodes over
cross-canvas boundaries is not yet handled properly and will yield
undefined / unexpected results.

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Requested by: Gordan Gledec
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Implement canvas renaming.

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Move New/Delete Canvas commands from "Edit" to "Canvas" top-level menu.

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Requested by: Gordan Gledec
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Restore automatic default route generation for pc and host nodes on
new link creation.

Bug found by: Gordan Gledec
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GG ignore.

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Provide transparent conversion from old-style file format (no canvases)
to the new one when loading an existing file.

Bug found by: Gordan Gledec
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Suppress verbose output of "route add" when instantiating vimage nodes.

Fix a bug which prevented static IPv4 routes to be configured via the GUI.

Bug found by: Gordan Gledec
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Requested by: Gordan Gledec
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Fix several instances of undo not properly logging recent changes.

Implement browsing through canvases via PgUp / PgDown or menu.

Canvases can now be deleted.

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