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- #!/bin/sh
- # restart using wish -*- mode: tcl; tab-width: 8; -*- \
- exec wish $0 ${1+"$@"}
-
- # sockspy: copyright tom poindexter 1998
- # sockspy: copyright Keith Vetter 2002
- # tpoindex@nyx.net
- # version 1.0 - december 10, 1998
- # version 2.0 - January, 2002 by Keith Vetter
- # KPV Nov 01, 2002 - added proxy mode
- # KPV Dec 21, 2002 - added extract window
- # version 2.5 - February, 2003 by Don Libes
- # DL Jan/Feb, 2003 - added date support, state save/restore, cmdline display
- #
- # spy on conversation between a tcp client and server
- #
- # usage: sockspy clientPort serverHost serverPort
- # -or- sockspy -proxy proxyPort
- # clientPort - port to which clients connect
- # serverHost - machine where real server runs
- # serverPort - port on which real server listens
- #
- # e.g. to snoop on http connections to a web server:
- # sockspy 8080 www.some.com 80
- # then client web browser should use a url like:
- # http://localhost:8080/index.html
- # (or set your browser's proxy to use 8080 on the sockspy machine)
-
- catch {package require uri} ;# Error handled below
-
- array set state {
- version 2.5
- extract 0
- bbar 1
- ascii 1
- autoscroll 1
- autowrap 1
- capture 1
- msg ""
- fixed {}
- fixedbold {}
- fontSize 9
- playback ""
- gui 0
- listen ""
- title "not connected"
- proxy 0
- fname ""
- time 1
- timeFormat ""
- timeFormatDefault "%H:%M:%S "
- }
-
- # variables to save across runs
- set saveList {
- state(extract)
- state(bbar)
- state(ascii)
- state(autoscroll)
- state(autowrap)
- state(proxy)
- state(fname)
- state(time)
- state(timeFormat)
- state(fontSize)
- extract(client)
- extract(server)
- extract(meta2)
- SP(proxyPort)
- SP(clntPort)
- SP(servPort)
- SP(servHost)
- }
-
- array set colors {client green server cyan meta red meta2 yellow}
- array set SP {proxyPort 8080 clntPort 8080 servHost "" servPort 80}
-
- set extract(client) {^(GET |POST |HEAD )}
- set extract(server) {^(HTTP/|Location: |Content-)}
- set extract(meta2) {.}
- #set extract(meta) {.}
-
- ##+##########################################################################
- #
- # createMain -- Creates the display
- #
- proc createMain {} {
- global state colors tcl_platform
-
- wm withdraw .
-
- set state(fixed) [font create -family courier -size $state(fontSize)]
- set state(fixedbold) [font create -family courier -size $state(fontSize) \
- -weight bold]
-
- wm title . "SockSpy -- $state(title)"
- wm resizable . 1 1
- wm protocol . WM_DELETE_WINDOW Shutdown ;# So we shut down cleanly
-
- #
- # Set up the menus
- #
- menu .m -tearoff 0
- . configure -menu .m
- .m add cascade -menu .m.file -label "File" -underline 0
- .m add cascade -menu .m.view -label "View" -underline 0
- .m add cascade -menu .m.help -label "Help" -underline 0
-
- menu .m.file
- .m.file add command -label "Save ..." -underline 0 -command saveOutput
- .m.file add command -label "Reconnect ..." -underline 0 -command GetSetup
- .m.file add separator
- .m.file add command -label "Exit" -underline 1 -command Shutdown
-
- menu .m.view
- .m.view add command -label " Clear" -underline 1 -command clearOutput
- .m.view add separator
- .m.view add checkbutton -label " ButtonBar" -variable state(bbar) \
- -underline 1 -command ButtonBar
- .m.view add checkbutton -label " Extract Window" -variable state(extract) \
- -underline 1 -command ToggleExtract
- .m.view add separator
- .m.view add command -label " + Font" -command [list doFont 1]
- .m.view add command -label " - Font" -command [list doFont -1]
- .m.view add separator
- .m.view add radiobutton -label " Hex" -underline 1 \
- -variable state(ascii) -value 0 -command redraw
- .m.view add radiobutton -label " ASCII" -underline 1 \
- -variable state(ascii) -value 1 -command redraw
- .m.view add separator
- .m.view add checkbutton -label " Autoscroll" -underline 5 \
- -variable state(autoscroll)
- .m.view add checkbutton -label " Autowrap" -underline 5 \
- -variable state(autowrap) -command ToggleWrap
- .m.view add checkbutton -label " Capture" -underline 5 \
- -variable state(capture) -command ToggleCapture
- .m.view add separator
- .m.view add checkbutton -label " Time" \
- -variable state(time) -command redraw
- .m.view add command -label " Time Format ..." -command timestampWindow
-
- menu .m.help -tearoff 0
- .m.help add command -label Help -underline 1 -command Help
- .m.help add separator
- .m.help add command -label About -command About
- #
- # Title and status window
- #
- frame .bbar
- frame .cmd -relief sunken -bd 2
- radiobutton .cmd.hex -text Hex -variable state(ascii) \
- -value 0 -command redraw
- radiobutton .cmd.ascii -text ASCII -variable state(ascii) \
- -value 1 -command redraw
- checkbutton .cmd.autos -text Autoscroll -variable state(autoscroll)
- checkbutton .cmd.autow -text Autowrap -variable state(autowrap) \
- -command ToggleWrap
- checkbutton .cmd.capture -text Capture -variable state(capture) \
- -command ToggleCapture
- checkbutton .cmd.time -text Time -variable state(time) \
- -command redraw
- button .cmd.clear -text Clear -command clearOutput
- #button .cmd.incr -text "+ Font" -command [list doFont 1]
- #button .cmd.decr -text "- Font" -command [list doFont -1]
- button .cmd.save -text Save -command saveOutput
- button .cmd.kill -text Exit -command Shutdown
- pack .cmd -side top -fill x -pady 5 -in .bbar
- pack .cmd.kill .cmd.save .cmd.clear .cmd.autow .cmd.autos .cmd.capture \
- .cmd.time \
- -side right -padx 3 -pady 3
- #label .title -relief ridge -textvariable state(title)
- #.title config -font "[.title cget -font] bold"
- label .stat -textvariable state(msg) -relief ridge -anchor w
-
- #
- # Now for the output area of the display
- #
- scrollbar .yscroll -orient vertical -command {.out yview}
- scrollbar .xscroll -orient horizontal -command {.out xview}
- text .out -width 80 -height 50 -font $state(fixed) -bg white -setgrid 1 \
- -yscrollcommand ".yscroll set" -xscrollcommand ".xscroll set"
- foreach t [array names colors] {
- .out tag configure $t -background $colors($t) -borderwidth 2 \
- -relief raised -lmargin1 5 -lmargin2 5
- .out tag configure time_$t -background $colors($t) -borderwidth 2 \
- -relief raised -lmargin1 5 -lmargin2 5 -font $state(fixedbold)
- }
- .out tag configure client2 -font $state(fixedbold)
- .out tag raise sel ;# Selection is most prominent
-
- grid .bbar - -row 0 -sticky ew
- grid .out .yscroll -row 1 -sticky news
- grid .xscroll -row 2 -sticky ew
- grid .stat - -row 3 -sticky ew
- grid rowconfigure . 1 -weight 1
- grid columnconfigure . 0 -weight 1
-
- bind .out <Control-l> clearOutput
- bind all <Alt-c> {console show}
- focus .out
- wm geometry . +10+10
- }
- ##+##########################################################################
- #
- # createExtract -- Creates the extract toplevel window.
- #
- proc createExtract {} {
- global state colors
-
- if {[winfo exists .extract]} {
- wm deiconify .extract
- return
- }
- set top ".extract"
- toplevel $top
- wm title $top "SockSpy Extract"
- wm protocol $top WM_DELETE_WINDOW [list ToggleExtract -1]
- if {[regexp {(\+[0-9]+)(\+[0-9]+)$} [wm geom .] => wx wy]} {
- wm geom $top "+[expr {$wx+35+[winfo width .]}]+[expr {$wy+15}]"
- }
-
- frame $top.top -bd 2 -relief ridge
- label $top.top.c -text "Client Filter" -anchor e
- entry $top.top.ce -textvariable extract(client) -bg $colors(client)
- label $top.top.s -text "Server Filter" -anchor e
- entry $top.top.se -textvariable extract(server) -bg $colors(server)
- label $top.top.m -text "Metadata Filter" -anchor e
- entry $top.top.me -textvariable extract(meta2) -bg $colors(meta2)
-
- text $top.out -width 80 -height 20 -font $state(fixed) -bg beige \
- -setgrid 1 -wrap none -yscrollcommand [list $top.yscroll set] \
- -xscrollcommand [list $top.xscroll set]
- foreach t [array names colors] {
- $top.out tag configure $t -background $colors($t) -borderwidth 2 \
- -relief raised -lmargin1 5 -lmargin2 5
- $top.out tag configure time_$t -background $colors($t) -borderwidth 2 \
- -relief raised -lmargin1 5 -lmargin2 5 -font $state(fixedbold)
- }
- $top.out tag raise sel ;# Selection is most prominent
-
- scrollbar $top.yscroll -orient vertical -command [list $top.out yview]
- scrollbar $top.xscroll -orient horizontal -command [list $top.out xview]
- grid $top.top - -row 0 -sticky ew -ipady 10
- grid $top.out $top.yscroll -sticky news
- grid $top.xscroll -sticky ew
-
- grid rowconfigure $top 1 -weight 1
- grid columnconfigure $top 0 -weight 1
-
- grid $top.top.c $top.top.ce -row 0 -sticky ew
- grid $top.top.s $top.top.se -sticky ew
- grid $top.top.m $top.top.me -sticky ew
- grid columnconfigure $top.top 1 -weight 1
- grid columnconfigure $top.top 2 -minsize 10
- }
- ##+##########################################################################
- #
- # doFont -- Changes the size of the font used for the display text
- #
- proc doFont {delta} {
- global state
-
- incr state(fontSize) $delta
- font configure $state(fixed) -size $state(fontSize)
- font configure $state(fixedbold) -size $state(fontSize)
- }
- ##+##########################################################################
- #
- # clearOutput -- Erases the content of the output window
- #
- proc clearOutput {} {
- global state
- if {$state(gui)} {
- .out delete 0.0 end
- catch {.extract.out delete 0.0 end}
- }
- set state(playback) ""
- }
- ##+##########################################################################
- #
- # redraw -- Redraws the contents of the output window.
- #
- # It does this by replaying the input stream.
- #
- proc redraw {} {
- global state
-
- set save_as $state(autoscroll) ;# Disable autoscrolling
- set state(autoscroll) 0
-
- set p $state(playback) ;# Save what gets displayed
- clearOutput ;# Erase current screen
- foreach {who data time} $p { ;# Replay the input stream
- insertData $who $data $time 1
- }
- set state(autoscroll) $save_as
- }
- ##+##########################################################################
- #
- # saveOutput -- Saves the content of the output window.
- #
- # It uses the playback stream as its data source.
- #
- proc saveOutput {} {
- global state but
-
- set but -1
- set but [tk_dialog .what "SockSpy Save" "Save which window?" \
- questhead 2 server client both cancel]
-
- if {$but == -1 || $but == 3} {
- return
- }
- set file [tk_getSaveFile -parent . -initialfile $state(fname)]
- if {$file == ""} return
-
- set state(fname) $file
- if {[catch {open $file w} fd]} {
- tk_messageBox -message "file $file cannot be opened" -icon error \
- -type ok
- return
- }
- fconfigure $fd -translation binary
- foreach {who data time} $state(playback) {
- if {$who == "meta" || $who == "meta2"} continue
- if {$but == 2 || ($but == 0 && $who == "server") || \
- ($but == 1 && $who == "client")} {
- if {$state(time)} {
- puts $fd [timestamp $time]
- }
- puts $fd $data
- }
- }
- close $fd
- bell
- }
- ##+##########################################################################
- #
- # printable -- Replaces all unprintable characters into dots.
- #
- proc printable {s {spaces 0}} {
- regsub -all {[^\x09\x20-\x7e]} $s "." n
- if {$spaces} {
- regsub -all { } $n "_" n
- }
- return $n;
- }
- ##+##########################################################################
- #
- # insertData -- Inserts data into the output window. WHO tells us if it is
- # from the client, server or meta.
- #
- proc insertData {who data {time {}} {force 0}} {
- global state
- array set prefix {meta = meta2 = client > server <}
-
- if {$time == ""} { ;# If not set, then set to now
- set time [clock seconds]
- }
- set timestamp [timestamp $time]
-
- DoExtract $who $data $timestamp ;# Display any extracted data
- if {! $force && ! $state(capture)} return ;# No display w/o capture on
- lappend state(playback) $who $data $time ;# Save for redraw and saving
-
- if {$state(ascii) || [regexp {^meta2?$} $who] } {
- regsub -all \r $data "" data
- foreach line [split $data \n] {
- set line [printable $line]
- set tag $who
- if {$tag == "client" && [regexp -nocase {^get |^post } $line]} {
- lappend tag client2
- }
- if {$state(gui)} {
- .out insert end "$timestamp" time_$tag "$line\n" $tag
- } else {
- puts "$timestamp$prefix($who)$line"
- }
- }
- } else { ;# Hex output
- while {[string length $data]} {
- set line [string range $data 0 15]
- set data [string range $data [string length $line] end]
- binary scan $line H* hex
- regsub -all {([0-9a-f][0-9a-f])} $hex {\1 } hex
- set line [format "%-48.48s %-16.16s\n" $hex [printable $line 1]]
- if {$state(gui)} {
- .out insert end "$timestamp" time_$who "$line" $who
- } else {
- puts "$timestamp$prefix(who)$line"
- }
- }
- }
- if {$state(autoscroll) && $state(gui)} {
- .out see end
- }
- }
- ##+##########################################################################
- #
- # timestampInit -- Initialize timestamp support
- #
- proc timestampInit {} {
- global state
-
- set state(timeFormat) $state(timeFormatDefault)
- }
- ##+##########################################################################
- #
- # timestamp -- Produce printable timestamps
- #
- # Note that it is the user's responsibility to make sure the
- # user-supplied format ends with a delimiter or separator such as a
- # space or colon. The timestamp code itself checks whether or not it
- # should do anything to simplify the many different places in the code
- # from which can be called.
-
- proc timestamp {time} {
- global state
-
- if {! $state(time)} { return "" }
- return [clock format $time -format $state(timeFormat)]
- }
- ##+###########################################################################
- #
- # timestampWindow -- Dialog for the user to configure the timestamp format.
- #
- proc timestampWindow {} {
- global state
-
- set state(oldTimeFormat) $state(timeFormat)
-
- set w .tf2
- destroy .tf
- toplevel .tf
- wm title .tf "SockSpy Time Format"
-
- set txt "Edit the format used for timestamps. "
- append txt "See Tcl's clock command documentation for a complete "
- append txt "description of acceptable formats."
-
- frame .tf.top -bd 2 -relief raised -padx 5
-
- message .tf.t -aspect 500 -text $txt
- label .tf.l -text "Format: "
- entry .tf.e -textvariable state(timeFormat)
- button .tf.default -text Default -width 10 -command {tfButton default}
- button .tf.ok -text OK -width 10 -command {tfButton ok}
- button .tf.cancel -text Cancel -width 10 -command {tfButton cancel}
-
- grid .tf.top -row 0 -column 0 -columnspan 4 -sticky ew -padx 10 -pady 10
- grid columnconfigure .tf 0 -weight 1
- grid x .tf.default .tf.ok .tf.cancel -padx 5 -sticky ew
- grid rowconfigure .tf 2 -minsize 8
-
- grid .tf.t - -in .tf.top -row 0
- grid .tf.l .tf.e -in .tf.top -row 1 -pady 10 -sticky ew
- grid columnconfigure .tf.top 1 -weight 1
- grid columnconfigure .tf.top 2 -minsize 10
-
- focus .tf.e
- .tf.e icursor end
- .tf.e select range 0 end
- }
- ##+##########################################################################
- #
- # tfButton -- handles button clicks on the timestamp dialog
- #
- proc tfButton {who} {
- if {$who == "defaut"} {
- set ::state(timeFormat) $::state(timeFormatDefault)
- } elseif {$who == "ok"} {
- destroy .tf
- redraw
- } elseif {$who == "cancel"} {
- set ::state(timeFormat) $::state(oldTimeFormat)
- destroy .tf
- }
- }
- ##+##########################################################################
- #
- # INFO
- #
- # Puts up an informational message both in the output window and
- # in the status window.
- #
- proc INFO {msg {who meta} {time {}} {display 0}} {
- global state
- set state(msg) $msg
- insertData $who $msg $time $display
- }
- proc ERROR {emsg} {
- if {$::state(gui)} {
- tk_messageBox -title "SockSpy Error" -message $emsg -icon error
- } else {
- puts $emsg
- }
- }
- ##+##########################################################################
- #
- # sockReadable -- Called when there is data available on the fromSocket
- #
- proc sockReadable {fromSock toSock who} {
- global state
- set data [read $fromSock]
- if {[string length $data] == 0} {
- close $fromSock
- catch { close $toSock }
- insertData meta "----- closed connection -----"
- INFO "waiting for new connection..."
- return
- }
- if {$toSock == ""} { ;# Not connected yet
- ProxyConnect $fromSock $data ;# Do proxy forwarding
- } else {
- catch { puts -nonewline $toSock $data } ;# Forward if we have a socket
- }
- insertData $who $data
- update
- }
- ##+##########################################################################
- #
- # ProxyConnect
- #
- # Called from a new socket connection when we have to determing who
- # to forward to.
- #
- proc ProxyConnect {fromSock data} {
- set line1 [lindex [split $data \r] 0]
- set bad [regexp -nocase {(http:[^ ]+)} $line1 => uri]
- if {$bad == 0} {
- INFO "ERROR: cannot extract URI from '$line1'"
- close $fromSock
- insertData meta "----- closed connection -----"
- insertData meta "waiting for new connection..."
- }
- set state(uri) $uri ;# For debugging
- array set URI [::uri::split $uri]
- if {$URI(port) == ""} { set URI(port) 80 }
- set bad [catch {set sockServ [socket $URI(host) $URI(port)]} reason]
- if {$bad} {
- set msg "cannot connect to $URI(host):$URI(port) => $reason"
- INFO $msg
- close $fromSock
- ERROR $msg
- insertData meta "----- closed connection -----"
- insertData meta "waiting for new connection..."
- return
- }
- INFO "fowarding to $URI(host):$URI(port)" meta2
- fileevent $fromSock readable \
- [list sockReadable $fromSock $sockServ client]
- fconfigure $sockServ -blocking 0 -buffering none -translation binary
- fileevent $sockServ readable \
- [list sockReadable $sockServ $fromSock server]
- puts -nonewline $sockServ $data
- }
- ##+##########################################################################
- #
- # clntConnect -- Called when we get a new client connection
- #
- proc clntConnect {sockClnt ip port} {
- global state SP
-
- set state(sockClnt) $sockClnt
- set state(meta) ""
-
- INFO "connect from [fconfigure $sockClnt -sockname] $port" meta2
- if {$state(proxy) || $SP(servHost) == {} || $SP(servHost) == "none"} {
- set sockServ ""
- } else {
- set n [catch {set sockServ [socket $SP(servHost) $SP(servPort)]} reason]
- if {$n} {
- INFO "cannot connect: $reason"
- close $sockClnt
- ERROR "cannot connect to $SP(servHost) $SP(servPort): $reason"
- insertData meta "----- closed connection -----"
- insertData meta "waiting for new connection..."
-
- }
- INFO "connecting to $SP(servHost):$SP(servPort)" meta2
- }
-
- ;# Configure connection to the client
- fconfigure $sockClnt -blocking 0 -buffering none -translation binary
- fileevent $sockClnt readable \
- [list sockReadable $sockClnt $sockServ client]
-
- ;# Configure connection to the server
- if {[string length $sockServ]} {
- fconfigure $sockServ -blocking 0 -buffering none -translation binary
- fileevent $sockServ readable \
- [list sockReadable $sockServ $sockClnt server]
- }
- }
- ##+##########################################################################
- #
- # DoListen
- #
- # Opens the socket server to listen for connections. It first closes it if
- # it is already open.
- #
- proc DoListen {} {
- global state SP
-
- set rval 1
- catch {close $state(sockClnt)} ;# Only the last open connection
-
- ;# Close old listener if it exists
- if {$state(listen) != ""} {
- set n [catch {close $state(listen)} emsg]
- if {$n} { INFO "socket close error: $emsg"}
- set state(listen) ""
- update ;# Need else socket below fails
- }
-
- # Listen on clntPort or proxyPort for incoming connections
- set port $SP(clntPort)
- if {$state(proxy)} {set port $SP(proxyPort)}
- set n [catch {set state(listen) [socket -server clntConnect $port]} emsg]
-
- if {$n} {
- INFO "socket open error: $emsg"
- set state(title) "not connected"
- set rval 0
- } else {
- if {$state(proxy)} {
- set state(title) "proxy localhost:$SP(proxyPort)"
- } else {
- set state(title) "localhost:$SP(clntPort) <--> "
- append state(title) "$SP(servHost):$SP(servPort)"
- }
- INFO $state(title)
- INFO "waiting for new connection..."
- }
- wm title . "SockSpy -- $state(title)"
- return $rval
- }
- ##+##########################################################################
- #
- # GetSetup -- Prompts the user for client port, server host and server port
- #
- proc GetSetup {} {
- global state SP ok
- array set save [array get SP]
- set ok 0 ;# Assume cancelling
-
- ;# Put in some default values
- if {![string length $SP(proxyPort)]} {set SP(proxyPort) 8080}
- if {![string length $SP(clntPort)]} {set SP(clntPort) 8080}
- if {![string length $SP(servPort)]} {set SP(servPort) 80}
-
- if {! $state(gui)} {
- catch {close $state(listen)}
-
- set d "no" ; if {$state(proxy)} { set d yes }
- set p [Prompt "Proxy mode" $d]
- if {[regexp -nocase {^y$|^yes$} $p]} {
- set state(proxy) 1
- set SP(proxyPort) [Prompt "proxy port" $SP(proxyPort)]
- } else {
- set state(proxy) 0
- set SP(clntPort) [Prompt "Client port" $SP(clntPort)]
- set SP(servHost) [Prompt "Server host" $SP(servHost)]
- set SP(servPort) [Prompt "Server port" $SP(servPort)]
- }
- DoListen
- return
- }
-
- destroy .dlg
- toplevel .dlg
- wm title .dlg "SockSpy Setup"
- wm geom .dlg +176+176
- #wm transient .dlg .
-
- label .dlg.top -bd 2 -relief raised
- set msg "You can configure SockSpy to either forward data\n"
- append msg "a fixed server and port or to use the HTTP Proxy\n"
- append msg "protocol to dynamically determine the server and\n"
- append msg "port to forward data to."
-
- frame .dlg.fforward
- frame .dlg.fproxy
- frame .dlg.fcmdline
-
- label .dlg.msg -text $msg -justify left
- radiobutton .dlg.forward -text "Use fixed server forwarding" \
- -variable state(proxy) -value 0 -anchor w -command GetSetup2
- label .dlg.fl1 -text "Client Port:" -anchor e
- entry .dlg.fe1 -textvariable SP(clntPort)
-
- label .dlg.fl2 -text "Server Host:" -anchor e
- entry .dlg.fe2 -textvariable SP(servHost)
- label .dlg.fl3 -text "Server Port:" -anchor e
- entry .dlg.fe3 -textvariable SP(servPort)
-
- radiobutton .dlg.proxy -text "Use HTTP Proxying" \
- -variable state(proxy) -value 1 -anchor w -command GetSetup2
- label .dlg.pl1 -text "Proxy Port:" -anchor e
- entry .dlg.pe1 -textvariable SP(proxyPort)
-
- label .dlg.cllabel -text "Command Line Equivalent"
- entry .dlg.clvar -textvariable SP(cmdLine) \
- -borderwidth 2 -relief sunken
- # -state readonly doesn't seem to work, sigh
-
- button .dlg.ok -text OK -width 10 -command ValidForm
- button .dlg.cancel -text Cancel -width 10 -command [list destroy .dlg]
-
- grid .dlg.top -row 0 -column 0 -columnspan 3 -sticky ew -padx 10 -pady 10
- grid columnconfigure .dlg 0 -weight 1
- grid x .dlg.ok .dlg.cancel -padx 10
- grid configure .dlg.ok -padx 0
- grid rowconfigure .dlg 2 -minsize 8
-
- pack .dlg.msg -in .dlg.top -side top -fill x -padx 10 -pady 5
- pack .dlg.fforward .dlg.fproxy .dlg.fcmdline -in .dlg.top \
- -side top -fill x -padx 10 -pady 10
-
- grid .dlg.cllabel -in .dlg.fcmdline -row 0 -column 0 -sticky w
- grid .dlg.clvar -in .dlg.fcmdline -row 1 -column 0 -sticky ew
- grid columnconfigure .dlg.fcmdline 0 -weight 1
- # no need for row/col configure
-
- grid .dlg.proxy - - -in .dlg.fproxy -sticky w
- grid x .dlg.pl1 .dlg.pe1 -in .dlg.fproxy -sticky ew
- grid columnconfigure .dlg.fproxy 0 -minsize .2i
- grid columnconfigure .dlg.fproxy 2 -weight 1
- grid columnconfigure .dlg.fproxy 3 -minsize 10
- grid rowconfigure .dlg.fproxy 2 -minsize 10
-
- grid .dlg.forward - - -in .dlg.fforward -sticky w
- grid x .dlg.fl1 .dlg.fe1 -in .dlg.fforward -sticky ew
- grid x .dlg.fl2 .dlg.fe2 -in .dlg.fforward -sticky ew
- grid x .dlg.fl3 .dlg.fe3 -in .dlg.fforward -sticky ew
- grid columnconfigure .dlg.fforward 0 -minsize .2i
- grid columnconfigure .dlg.fforward 2 -weight 1
- grid columnconfigure .dlg.fforward 3 -minsize 10
- grid rowconfigure .dlg.fforward 4 -minsize 10
- raise .dlg
-
- bind .dlg.forward <Return> [bind all <Key-Tab>]
- bind .dlg.proxy <Return> [bind all <Key-Tab>]
- bind .dlg.fe1 <Return> [bind all <Key-Tab>]
- bind .dlg.fe2 <Return> [bind all <Key-Tab>]
- bind .dlg.fe3 <Return> [list .dlg.ok invoke]
- bind .dlg.pe1 <Return> [list .dlg.ok invoke]
-
- GetSetup2
- .dlg.pe1 icursor end
- .dlg.fe2 icursor end
-
- # trace all variables involved in the Setup window
- trace variable state(proxy) w cmdlineUpdate
- trace variable SP w cmdlineUpdate
- cmdlineUpdate SP servHost w
-
- if {$state(proxy)} { focus -force .dlg.pe1 } { focus -force .dlg.fe2 }
-
- raise .dlg
- tkwait window .dlg
- wm deiconify .
-
- if {$ok} {
- DoListen
- } else {
- array set SP [array get save]
- }
- }
- ##+##########################################################################
- #
- # GetSetup2 -- toggles between forwarding and proxying modes in the dialog
- #
- proc GetSetup2 {} {
- global state
- array set s {1 normal 0 disabled}
- if {! $state(proxy)} { array set s {0 normal 1 disabled} }
-
- .dlg.pl1 config -state $s(1)
- .dlg.pe1 config -state $s(1)
- foreach w {1 2 3} {
- .dlg.fl$w config -state $s(0)
- .dlg.fe$w config -state $s(0)
- }
- }
- ##+##########################################################################
- #
- # ValidForm -- if setup dialog has valid entries then kill the dialog
- #
- proc ValidForm {} {
- global state SP ok
- set ok 0
- if {$state(proxy)} {
- if {$SP(proxyPort) != ""} {set ok 1}
- } elseif {$SP(clntPort) !="" && $SP(servHost) !="" && $SP(servPort) !=""} {
- set ok 1
- }
- if {$ok} {destroy .dlg}
- return $ok
- }
- ##+#########################################################################
- #
- # cmdlineUpdate
- #
- # cmdlineUpdate watches the connection variables and updates the command-line
- # equivalent.
- #
- proc cmdlineUpdate {X elt X} {
- global SP
-
- # Check that port values are integers and that server host is not empty.
- if {$::state(proxy)} {
- set SP(cmdLine) "sockspy -proxy $SP(proxyPort)"
- if {! [string is integer -strict $SP(proxyPort)]} {
- set SP(cmdLine) "none (invalid proxy port above)"
- }
- return
- }
-
- if {$SP(servHost) == ""} {
- set SP(cmdLine) "none (invalid server host above)"
- return
- }
- foreach elt {clntPort servPort} lbl {"client port" "server port"} {
- if {! [string is integer -strict $SP($elt)]} {
- set SP(cmdLine) "none (invalid $lbl above)"
- return
- }
- }
- set SP(cmdLine) "sockspy $SP(clntPort) $SP(servHost) $SP(servPort)"
- }
- ##+##########################################################################
- #
- # Prompt -- Non-gui way to get input from the user.
- #
- proc Prompt {prompt {default ""}} {
- if {$default != ""} {
- puts -nonewline "$prompt ($default): "
- } else {
- puts -nonewline "$prompt: "
- }
- flush stdout
- set n [gets stdin line]
-
- if {$n == 0 && $default != ""} {
- set line $default
- }
- return $line
- }
- ##+##########################################################################
- #
- # Shutdown -- Closes the listen port before exiting
- #
- proc Shutdown {} {
- global state
-
- catch {close $state(listen)}
- stateSaveReal ;# save all state info NOW!
- exit
- }
- ##+##########################################################################
- #
- # ButtonBar -- Toggles the visibility of the button bar
- #
- proc ButtonBar {} {
- global state
-
- if {$state(bbar)} { ;# Need to add button bar
- pack .cmd -side top -fill x -pady 5 -in .bbar
- } else {
- pack forget .cmd
- .bbar config -height 1 ;# Need this to give remove gap
- }
- }
- ##+##########################################################################
- #
- # ToggleExtract -- Toggles the visibility of the extract window
- #
- proc ToggleExtract {{how 0}} {
- global state
-
- if {$how == -1} { ;# Hard kill
- destroy .extract
- set state(extract) 0
- return
- }
- if {$state(extract)} {
- createExtract
- } else {
- catch {wm withdraw .extract}
- }
- }
- ##+##########################################################################
- #
- # ToggleWrap -- turns on or off wrap in the text window
- #
- proc ToggleWrap {} {
- global state
- array set x {0 none 1 char}
- .out configure -wrap $x($state(autowrap))
- }
- ##+##########################################################################
- #
- # ToggleCapture -- puts up a help message
- #
- proc ToggleCapture {} {
- global state
- if {$state(capture)} {
- INFO "Data capture display enabled" meta
- .out config -bg white
- } else {
- INFO "Data capture display disabled" meta 1
- .out config -bg grey88
- }
- }
- ##+##########################################################################
- #
- # Help -- a simple help system
- #
- proc Help {} {
- destroy .help
- toplevel .help
- wm title .help "SockSpy Help"
- wm geom .help "+[expr {[winfo x .] + 50}]+[expr {[winfo y .] + 50}]"
-
- text .help.t -relief raised -wrap word -width 70 -height 25 \
- -padx 10 -pady 10 -cursor {} -yscrollcommand {.help.sb set}
- scrollbar .help.sb -orient vertical -command {.help.t yview}
- button .help.dismiss -text Dismiss -command {destroy .help}
- pack .help.dismiss -side bottom -pady 10
- pack .help.sb -side right -fill y
- pack .help.t -side top -expand 1 -fill both
-
- set bold "[font actual [.help.t cget -font]] -weight bold"
- set fixed "[font actual [.help.t cget -font]] -family courier"
- .help.t tag config title -justify center -foregr red -font "Times 20 bold"
- .help.t tag configure title2 -justify center -font "Times 12 bold"
- .help.t tag configure header -font $bold
- .help.t tag configure n -lmargin1 15 -lmargin2 15
- .help.t tag configure fixed -font $fixed -lmargin1 25 -lmargin2 55
-
- .help.t insert end "SockSpy\n" title
- .help.t insert end "Authors: Tom Poindexter and Keith Vetter\n\n" title2
-
- set m "SockSpy lets you watch the conversation of a tcp client and server. "
- append m "SockSpy acts much like a gateway: it waits for a tcp connection, "
- append m "then connects to the real server. Data from the client is passed "
- append m "on to the server, and data from the server is passed onto the "
- append m "client.\n\n"
-
- append m "Along the way, the data streams are also displayed in text "
- append m "widget with data sent from the client displayed in green, data "
- append m "from the server in blue and connection metadata in red. The data "
- append m "can be displayed as printable ASCII or both hex and "
- append m "printables.\n\n"
- .help.t insert end "What is SockSpy?\n" header $m n
-
- set m "Why might you want to use SockSpy? Debugging tcp client/server "
- append m "programs, examining protocols and diagnosing network problems "
- append m "are top candidates. Perhaps you just want to figure out how "
- append m "something works. I've used it to bypass firewalls, to rediscover "
- append m "my lost smtp password, to access a news server on a remote "
- append m "network, etc.\n\nIt's not a replacement for heavy-duty tools "
- append m "such as 'tcpdump' and other passive packet sniffers. On the "
- append m "other hand, SockSpy doesn't require any special privileges to "
- append m "run (unless of course, you try to listen on a Unix reserved tcp "
- append m "port less than 1024.)\n\n"
- .help.t insert end "Why Use SockSpy?\n" header $m n
-
- set m "Just double click on SockSpy to start it. You will be prompted for "
- append m "various connection parameters described below.\n\n"
- append m "Alternatively, you can specify the connection parameters on the "
- append m "command line. This is also how you can run SockSpy in text mode "
- append m "without a GUI.\n\n"
- append m "To start SockSpy from the command line:\n"
- .help.t insert end "How to Use SockSpy\n" header $m n
-
- set m "$ sockspy <listen-port> <server-host> <server-port>\n or\n"
- append m "$ sockspy -proxy <proxy-port>\n\n"
- .help.t insert end $m fixed
-
- set m "To start SockSpy in text mode without a GUI:\n"
- .help.t insert end $m n
- set m "$ tclsh sockspy <listen-port> <server-host> <server-port>\n or\n"
- append m "$ tclsh sockspy -proxy <proxy-port>\n\n"
- .help.t insert end $m fixed
-
- set m "<listen-port>: the tcp port on which to listen. Clients should "
- append m "connect to this port.\n"
- append m "<server-host>: the host where the real server runs.\n"
- append m "<server-port>: the tcp port on which the real server listens.\n"
- append m "<proxy-port>: the tcp port on which to listen in proxy-mode.\n\n"
- .help.t insert end $m n
-
- set m "In proxy mode SockSpy works like a simple HTTP proxy server. "
- append m "Instead of forwarding to a fixed server and port, it follows the "
- append m "HTTP proxy protocol and reads the server information from the "
- append m "first line of HTTP request.\n\n"
- append m "You can turn on proxy mode by selecting it in the SockSpy Setup "
- append m "dialog, or by specifying -proxy on the command line.\n\n"
- .help.t insert end "Proxy Mode\n" header $m n
-
- set m "The extract window lets you extract specific parts of the "
- append m "data stream. As data arrives from the client, server, or as "
- append m "metadata, it gets matched against the appropriate regular "
- append m "expression filter. If it matches, the data gets displayed "
- append m "in the extract window. (Malformed regular expression are "
- append m "silently ignored.)\n\n"
- .help.t insert end "Extract Window\n" header $m n
-
- set m "To spy on HTTP connections to a server, type:\n"
- .help.t insert end "Example\n" header $m n
- .help.t insert end " sockspy 8080 www.some.com 80\n" fixed
- .help.t insert end "and point your browser to\n" n
- .help.t insert end " http://localhost:8080/index.html\n\n" fixed
- .help.t insert end "Alternatively, you could configure your browser to " n
- .help.t insert end "use localhost and port 8000 as its proxy, and then " n
- .help.t insert end "type:\n" n
- .help.t insert end " sockspy -proxy 8000\n" fixed
- .help.t insert end "and user your browser normally.\n" n
-
- .help.t config -state disabled
- }
- ##+##########################################################################
- #
- # About -- simple about box
- #
- proc About {} {
- set m "SockSpy version $::state(version)\n"
- append m "by Tom Poindexter and Keith Vetter\n"
- append m "Copyright 1998-[clock format [clock seconds] -format %Y]\n\n"
- append m "A program to eavesdrop on a tcp client server conversation."
- tk_messageBox -icon info -title "About SockSpy" -message $m -parent .
- }
- ##+##########################################################################
- #
- # DoExtract -- Displays any data matching the RE in the extract window
- #
- proc DoExtract {who data timestamp} {
- global state extract
-
- if {! $state(gui)} return
- if {! [info exists extract($who)]} return
- if {! [winfo exists .extract]} return
-
- regsub -all \r $data "" data
- foreach line [split $data \n] {
- if {$extract($who) == ""} continue
- catch {
- if {[regexp -nocase $extract($who) $line]} {
- .extract.out insert end "$timestamp" time_$who
- .extract.out insert end "$line\n" $who
- }
- }
- }
- if {$state(autoscroll)} {
- .extract.out see end
- }
- }
- ##+##########################################################################
- #
- # stateRestore - Initialize save/restore package and do restore.
- #
- proc stateRestore {} {
- global env state SP extract
-
- switch $::tcl_platform(platform) "macintosh" {
- set stateFile [file join $env(PREF_FOLDER) "SockSpy Preferences"]
- } "windows" {
- set stateFile [file join $env(HOME) "sockspy.cfg"]
- } "unix" {
- if {[info exists env(DOTDIR)]} {
- set stateFile [file join $env(DOTDIR) .sockspy]
- } else {
- set stateFile [file join $env(HOME) .sockspy]
- }
- }
-
- # complain only if it exists and we fail to read it successsfully
- if {[file exists $stateFile]} {
- uplevel #0 source $stateFile
- }
-
- set state(stateFile) $stateFile
-
- foreach v $::saveList {
- trace variable $v w stateSave
- }
- }
- ##+#########################################################################
- #
- # stateSave and stateSaveReal - Save program state.
- #
- # Two procs are used to do this. stateSave is called to schedule the save.
- # stateSaveReal is called to actually do the save.
- #
- # stateSave schedules the save a short time in the future to avoid interfering
- # with the UI. This is especially a problem with the "extract" variables which
- # aren't edited from a modal dialogue and thus have no associated "OK" button
- # to tell us when to save them. (The alternative would be to save them after
- # every keystroke - yuk.)
- #
- proc stateSave {a b c} {
- catch {after cancel $::state(saveId)}
- set ::state(saveId) [after 5000 stateSaveReal]
- }
-
- proc stateSaveReal {} {
- global state SP extract
-
- # silently ignore open failure
- if {[catch {open $state(stateFile) w} sf]} return
-
- set now [clock format [clock seconds] -format %c]
- puts $sf "# SockSpy Initialization File"
- puts $sf "# Written by SockSpy $state(version) on $now."
- puts $sf "#"
- puts $sf "# Warning: If you edit this file while SockSpy is running, "
- puts $sf "# edits will be lost! Also, only edit the lines already here. "
- puts $sf "# If you add procs or more variables, they will not be saved."
-
- puts $sf ""
- foreach v $::saveList {
- puts $sf "set $v \"[string map {[ \\[ \\ \\\\} [set $v]]\""
- }
- close $sf
- }
-
- ################################################################
- ################################################################
- ################################################################
-
- set state(gui) [info exists tk_version]
- if {[catch {package present uri}]} {
- ERROR "ERROR: SockSpy requires the uri package from tcllib."
- exit 1
- }
-
- timestampInit
- stateRestore
-
- if {$state(gui)} createMain
-
- if {[lindex $argv 0] == "-local"} {
- set argv [list 8080 localhost 80]
- set argc 3
- }
-
- if {[lindex $argv 0] == "-proxy"} {
- set state(proxy) 1
- if {$argc == 2} {
- set SP(proxyPort) [lindex $argv 1]
- DoListen
- } else {
- GetSetup
- }
- } else {
- if {$argc >= 1} { set SP(clntPort) [lindex $argv 0] }
- if {$argc >= 2} { set SP(servHost) [lindex $argv 1] }
- if {$argc >= 3} { set SP(servPort) [lindex $argv 2] }
- if {$argc >= 3} {
- DoListen
- } else {
- GetSetup
- }
- }
-
- if {$state(extract)} createExtract
-
- if {! $state(gui)} {
- vwait forever ;# tclsh needs this
- } else {
- wm deiconify .
- }
-