X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=tkl-web-harvester;fp=tkl-web-harvester;h=040da57740baaa6d75c1b6ae5004c22a761f060b;hb=99f83d18ecb04380da6f07297f7b74d4e8fe7d9f;hp=0000000000000000000000000000000000000000;hpb=f637a09bc608ef42b26df53f9a1535fa3acef91b;p=tclrobot.git
diff --git a/tkl-web-harvester b/tkl-web-harvester
new file mode 100755
index 0000000..040da57
--- /dev/null
+++ b/tkl-web-harvester
@@ -0,0 +1,1527 @@
+#!/usr/bin/tclsh
+# $Id: tkl-web-harvester,v 1.1 2003/08/14 08:02:10 marc Exp $
+#
+set loghandle stdout
+set robotsRunning 0
+set workdir [pwd]
+set idletime 15000
+set acceptLanguage {}
+set debuglevel 1
+set libdir ""
+
+
+proc logmsg {msg} {
+ global loghandle
+
+ puts $loghandle $msg
+ flush $loghandle
+}
+
+#proc dbgmsg {level msg} {
+# global debuglevel
+# if {[expr $debuglevel >= $level]} {
+# logmsg $msg
+# }
+#}
+proc dbgmsg {msg} {
+ global debuglevel
+ if {[expr $debuglevel >= 0]} {
+ logmsg $msg
+ }
+}
+# dbgmsg is always called with just one string!
+
+
+proc fnameEncode {fname} {
+ regsub -all {&} $fname {%38} fname
+ regsub -all {<} $fname {%3C} fname
+ regsub -all {>} $fname {%3E} fname
+ regsub -all {\?} $fname {%3F} fname
+ regsub -all {\*} $fname {%2A} fname
+ return $fname
+}
+
+proc fnameDecode {fname} {
+ regsub -all {%38} $fname {&} fname
+ regsub -all {%3C} $fname {<} fname
+ regsub -all {%3E} $fname {>} fname
+ regsub -all {%3F} $fname {?} fname
+ regsub -all {%2A} $fname {*} fname
+ return $fname
+}
+
+proc RobotFileNext1 {area lead} {
+ # dbgmsg "RobotFileNext1 area=$area lead=$lead"
+ if {[catch {set ns [glob ${area}/*]}]} {
+ return {}
+ }
+ foreach n $ns {
+ if {[file isfile $n]} {
+ set off [string last / $n]
+ # skip /
+ incr off
+ set end [string length $n]
+ # skip _.tkl
+ incr end -6
+ return $lead/[string range $n $off $end]
+ }
+ }
+ foreach n $ns {
+ if {[file isdirectory $n]} {
+ set off [string last / $n]
+ # skip /
+ incr off
+ set sb [RobotFileNext1 $n $lead/[string range $n $off end]]
+ if {[string length $sb]} {
+ return $sb
+ }
+ }
+ }
+ return {}
+}
+
+proc RobotWriteRecord {outf fromurl distance} {
+ puts $outf {}
+ puts $outf ""
+ puts $outf ""
+ puts $outf $distance
+ puts $outf ""
+ puts $outf ""
+ puts $outf $fromurl
+ puts $outf ""
+ puts $outf ""
+}
+
+proc RobotReadRecord {inf fromurlx distancex} {
+ upvar $fromurlx fromurl
+ upvar $distancex distance
+ gets $inf
+ gets $inf
+ gets $inf
+ set distance [string trim [gets $inf]]
+ # dbgmsg "got distance = $distance"
+ gets $inf
+ gets $inf
+ set fromurl [string trim [gets $inf]]
+}
+
+proc RobotFileNext {task area} {
+ global control
+ global idletime ns
+ global status
+
+ # dbgmsg "RobotFileNext seq=$control($task,seq)"
+ if {$control($task,seq) < 0} {
+ return {}
+ }
+ set target $control($task,target)
+ if {$control($task,seq) == 0} {
+ if {[catch {set ns($task) [glob $target/$area/*]}]} {
+ puts "----------- DONE-------- target=$target"
+ return done
+ }
+ }
+ # dbgmsg "ns=$ns($task)"
+ set off [string length $target/$area]
+ incr off
+ set n [lindex $ns($task) $control($task,seq)]
+ # dbgmsg "n=$n"
+ if {![string length $n]} {
+ set control($task,seq) -1
+ set statusfile [open $target/status w]
+ puts $statusfile "$status($task,unvisited) $status($task,bad) $status($task,visited)"
+ close $statusfile
+ return wait
+ }
+ incr control($task,seq)
+ if {[file isfile $n/robots.txt_.tkl]} {
+ # dbgmsg "ok returning http://[string range $n $off end]/robots.txt"
+ return [fnameDecode http://[string range $n $off end]/robots.txt]
+ } elseif {[file isdirectory $n]} {
+ set sb [RobotFileNext1 $n http://[string range $n $off end]]
+ if {[string length $sb]} {
+ return [fnameDecode $sb]
+ }
+ }
+ dbgmsg "no more work at end of RobotFileNext n=$n"
+ dbgmsg "ns=$ns($task)"
+ return {}
+}
+
+
+proc RobotFileExist {task area host path} {
+ global debuglevel control
+
+ if {$debuglevel > 3} {
+ dbgmsg "RobotFileExist begin area=$area host=$host path=$path"
+ }
+ set target $control($task,target)
+ return [file exists [fnameEncode $target/$area/$host${path}_.tkl]]
+}
+
+proc RobotFileUnlink {task area host path} {
+ global status control
+
+ set target $control($task,target)
+ # dbgmsg "RobotFileUnlink begin"
+ # dbgmsg "area=$area host=$host path=$path"
+ set npath [fnameEncode $target/$area/$host${path}_.tkl]
+ # dbgmsg "npath=$npath"
+ set comp [split $npath /]
+ if {[catch {exec rm $npath}]} return
+
+ set l [llength $comp]
+ incr l -2
+ incr status($task,$area) -1
+ for {set i $l} {$i > 0} {incr i -1} {
+ set path [join [lrange $comp 0 $i] /]
+ if {![catch {glob $path/*}]} return
+ exec rmdir $path
+ }
+ # dbgmsg "RobotFileUnlink end"
+}
+
+proc RobotFileClose {out} {
+ if [string compare $out stdout] {
+ close $out
+ }
+}
+
+proc RobotFileOpen {task area host path {mode w}} {
+ set orgPwd [pwd]
+ global workdir status debuglevel control
+
+ # dbgmsg "RobotFileOpen task=$task path=$path"
+
+ set target $control($task,target)
+ set path [fnameEncode $path]
+
+ if {![info exists workdir]} {
+ return stdout
+ }
+ if {$debuglevel > 3} {
+ dbgmsg "RobotFileOpen orgPwd=$orgPwd area=$area host=$host path=$path mode=$mode"
+ }
+ if {[string compare $orgPwd $workdir]} {
+ dbgmsg "ooops. RobotFileOpen failed"
+ dbgmsg "workdir = $workdir"
+ dbgmsg "pwd = $orgPwd"
+ exit 1
+ }
+
+ set comp [split $target/$area/$host /]
+ set len [llength $comp]
+ incr len -1
+
+ # dbgmsg "1 comp=$comp"
+
+ for {set i 0} {$i <= $len} {incr i} {
+ set d [lindex $comp $i]
+ if {[string length $d] == 0} {
+ cd /
+ } elseif {[catch {cd $d}]} {
+ exec mkdir $d
+ cd ./$d
+ if {![string compare $area unvisited] && $i == $len && $mode == "w"} {
+ if {[string compare $path /robots.txt]} {
+ set out [open robots.txt_.tkl w]
+ dbgmsg "creating robots.txt in $d"
+ close $out
+ incr status($task,unvisited)
+ }
+ }
+ }
+ }
+
+ set comp [split $path /]
+ set len [llength $comp]
+ incr len -1
+
+ # dbgmsg "2 path=$path comp=$comp"
+
+ for {set i 0} {$i < $len} {incr i} {
+ set d [lindex $comp $i]
+ if {[string length $d] > 0} {
+ if {[catch {cd $d}]} {
+ exec mkdir $d
+ cd ./$d
+ }
+ }
+ }
+ set d [lindex $comp $len]
+ set out [open ${d}_.tkl $mode]
+ if {$mode == "w"} {
+ incr status($task,$area)
+ }
+ cd $orgPwd
+ return $out
+}
+
+proc RobotStartJob {root task} {
+ global control
+
+ set fname "$root$task"
+ set f [open $fname r]
+ set xml [read $f]
+ dbgmsg "Reading $fname"
+ close $f
+ # task type must be 2
+ if {![regexp {([^<]*)} $xml x tasktype]} {
+ return
+ }
+ set tasktype [string trim $tasktype]
+ if {![string match 2 $tasktype]} {
+ return
+ }
+ # status must not be finished or error
+ if {![regexp {([^<]*)} $xml x status]} {
+ return
+ }
+ if {$status == "finished"} {
+ dbgmsg "already finished"
+ return
+ }
+ if {$status == "error"} {
+ dbgmsg "already finished due to error"
+ return
+ }
+ # ignore if task has already been processed
+ dbgmsg "status = $status"
+ if {![CreateTask $task]} {
+ return
+ }
+ set control($task,taskfname) $fname
+ dbgmsg "Reading $fname stage 2"
+ htmlSwitch $xml \
+ url {
+ lappend starturls $body
+ } filter {
+ set type $parm(type)
+ set action $parm(action)
+ if {$type == "domain"} {
+ $action url http://$body/*
+ }
+ if {$type == "url"} {
+ $action url $body
+ }
+ if {$type == "mime"} {
+ $action mime $body
+ }
+ } target {
+ set ex [file rootname [file tail $task]]
+ #set control($task,target) "$root$body/$ex"
+ set control($task,target) "$control(tmpdir)/$ex"
+ set control($task,output) "$root$body"
+ } distance {
+ set control($task,distance) $body
+ } status {
+ set control($task,filestatus) $body
+ } tasktype {
+ set control($task,tasktype) $body
+ }
+
+ if {[info exists starturls]} {
+ foreach url $starturls {
+ puts "marking start urls $url"
+ url $url
+ }
+ }
+
+ if {$status == "pending"} {
+ regsub {[^<]*} $xml {running} xml2
+ set f [open $fname w]
+ puts -nonewline $f $xml2
+ close $f
+ }
+}
+
+proc RobotDoneJob {task} {
+ global daemon_dir control
+
+ if {![info exists daemon_dir]} {
+ return
+ }
+ set fname $control($task,taskfname)
+ set f [open $fname r]
+ set xml [read $f]
+ dbgmsg "Reading $fname"
+ regexp {([^<]*)} $xml x status
+ dbgmsg "------"
+ dbgmsg "status = $status"
+ close $f
+
+ regsub {[^<]*} $xml {finished} xml2
+ set f [open $fname w]
+ puts -nonewline $f $xml2
+ close $f
+}
+
+proc RobotScanDir {} {
+ global daemon_dir
+
+ if {![info exists daemon_dir]} {
+ return
+ }
+ foreach d $daemon_dir {
+ if {[catch {set files [glob $d/*.spl]}]} {
+ return
+ }
+ foreach fname $files {
+ if {[file isfile $fname] && [file readable $fname]} {
+ set jobfile [open $fname]
+ gets $jobfile portalroot
+ gets $jobfile portaltask
+ close $jobfile
+
+ RobotStartJob $portalroot $portaltask
+ }
+ }
+ }
+}
+
+proc RobotRR {task} {
+ global control robotsRunning tasks robotsMax status
+
+ dbgmsg "RobotRR -- running=$robotsRunning max=$robotsMax---------------"
+ incr robotsRunning -1
+
+ # only one task gets through...
+ if {[string compare [lindex $tasks 0] $task]} {
+ return
+ }
+ dbgmsg "RobotRR. task = $task"
+ while {$robotsRunning} {
+ vwait robotsRunning
+ }
+ dbgmsg "Scan"
+ if {[catch {RobotScanDir} msg]} {
+ logmsg "RobotScanDir failed"
+ logmsg $msg
+ }
+ foreach t $tasks {
+ set target $control($t,target)
+ set statusfile [open $target/status w]
+ puts $statusfile "$status($t,unvisited) $status($t,bad) $status($t,visited)"
+ close $statusfile
+ set control($t,seq) 0
+ RobotStart $t
+ }
+}
+
+proc RobotDaemonSig {} {
+ global daemon_cnt
+
+ incr daemon_cnt
+}
+
+proc RobotDaemonLoop {} {
+ global daemon_cnt tasks robotsRunning status
+
+ set daemon_cnt 0
+ while 1 {
+ logmsg $daemon_cnt
+ RobotScanDir
+
+ if {[info exists tasks]} {
+ logmsg "daemon loop tasks $tasks"
+ foreach t $tasks {
+ set control($t,seq) 0
+ RobotStart $t
+ }
+ while {$robotsRunning} {
+ vwait robotsRunning
+ }
+ }
+ after 30000 RobotDaemonSig
+ vwait daemon_cnt
+ }
+}
+
+proc RobotRestart {task url sock} {
+ global URL robotsRunning
+
+ close $sock
+ after cancel $URL($sock,cancel)
+
+ foreach v [array names URL $task,$url,*] {
+ unset URL($v)
+ }
+
+ incr robotsRunning -1
+ RobotStart $task
+}
+
+proc RobotStart {task} {
+ global URL
+ global robotsRunning robotsMax idletime status tasks
+
+ # dbgmsg "RobotStart $task running=$robotsRunning"
+ while {1} {
+ set url [RobotFileNext $task unvisited]
+ if {[string compare $url done] == 0} {
+ dbgmsg "In RobotStart task $task done"
+
+ catch {unset ntasks}
+ foreach t $tasks {
+ if {[string compare $t $task]} {
+ lappend ntasks $t
+ } else {
+ dbgmsg "task $t done"
+ }
+ }
+ if {![info exists ntasks]} {
+ unset tasks
+ dbgmsg "all done"
+ } else {
+ set tasks $ntasks
+ }
+ RobotDoneJob $task
+ return
+ }
+ if {![string length $url]} {
+ return
+ }
+ incr robotsRunning
+ if {[string compare $url wait] == 0} {
+ after $idletime [list RobotRR $task]
+ return
+ }
+ set r [RobotGetUrl $task $url {}]
+ if {!$r} {
+ if {$robotsRunning >= $robotsMax} return
+ } else {
+ incr robotsRunning -1
+ if {![RobotFileExist $task bad $URL($task,$url,hostport) $URL($task,$url,path)]} {
+ set outf [RobotFileOpen $task bad $URL($task,$url,hostport) $URL($task,$url,path)]
+ RobotFileClose $outf
+ }
+ RobotFileUnlink $task unvisited $URL($task,$url,hostport) $URL($task,$url,path)
+ }
+ }
+}
+
+proc headSave {task url out} {
+ global URL
+
+ if {[info exists URL($task,$url,head,last-modified)]} {
+ puts $out "$URL($task,$url,head,last-modified)"
+ }
+ puts $out {}
+ if {[info exists URL($task,$url,head,date)]} {
+ puts $out " $URL($task,$url,head,date)"
+ }
+ if {[info exists URL($task,$url,head,content-length)]} {
+ puts $out " $URL($task,$url,head,content-length)"
+ }
+ if {[info exists URL($task,$url,head,server)]} {
+ puts $out " $URL($task,$url,head,server)"
+ }
+ puts $out {}
+ puts $out {}
+ puts $out " $url"
+ if {[info exists URL($task,$url,head,content-type)]} {
+ puts $out " $URL($task,$url,head,content-type)"
+ }
+ puts $out {}
+}
+
+proc RobotHref {task url hrefx hostx pathx} {
+ global URL control debuglevel
+ upvar $hrefx href
+ upvar $hostx host
+ upvar $pathx path
+
+ if {$debuglevel > 1} {
+ dbgmsg "Ref input url = $url href=$href"
+ }
+
+ if {[string first { } $href] >= 0} {
+ return 0
+ }
+ if {[string length $href] > 256} {
+ return 0
+ }
+
+# Skip pages that have ? in them
+# if {[string first {?} $url] >= 0 && [string first {?} $href] >= 0} {
+# return 0
+# }
+ # get method (if any)
+ if {![regexp {^([^/:]+):(.*)} $href x method hpath]} {
+ set hpath $href
+ set method http
+ } else {
+ if {[string compare $method http]} {
+ return 0
+ }
+ }
+ # get host (if any)
+ if {[regexp {^//([^/]+)([^\#]*)} $hpath x host surl]} {
+ if {![string length $surl]} {
+ set surl /
+ }
+ if {[info exist control($task,domains)]} {
+ set ok 0
+ foreach domain $control($task,domains) {
+ if {[string match $domain $host]} {
+ set ok 1
+ break
+ }
+ }
+ if {!$ok} {
+ return 0
+ }
+ }
+ } else {
+ regexp {^([^\#]*)} $hpath x surl
+ set host $URL($task,$url,hostport)
+ }
+ if {![string length $surl]} {
+ return 0
+ }
+ if {[string first / $surl]} {
+ # relative path
+ set curpath $URL($task,$url,path)
+ if {[info exists URL($task,$url,bpath)]} {
+ set curpath $URL($task,$url,bpath)
+ }
+ regexp {^([^\#?]*)} $curpath x dpart
+ set l [string last / $dpart]
+ if {[expr $l >= 0]} {
+ set surl [string range $dpart 0 $l]$surl
+ } else {
+ set surl $dpart/$surl
+ }
+ }
+ set surllist [split $surl /]
+ catch {unset path}
+ set pathl 0
+ foreach c $surllist {
+ switch -- $c {
+ .. {
+ if {$pathl > 1} {
+ incr pathl -2
+ set path [lrange $path 0 $pathl]
+ incr pathl
+ }
+ }
+ . {
+
+ }
+ default {
+ incr pathl
+ lappend path $c
+ }
+ }
+ }
+ if {$debuglevel > 4} {
+ dbgmsg "pathl=$pathl output path=$path"
+ }
+ set path [join $path /]
+ if {![string length $path]} {
+ set path /
+ }
+ regsub -all {~} $path {%7E} path
+ set href "$method://$host$path"
+
+ if {$debuglevel > 1} {
+ dbgmsg "Ref result = $href"
+ }
+ return [checkrule $task url $href]
+}
+
+proc RobotError {task url code} {
+ global URL
+
+ dbgmsg "Bad URL $url (code $code)"
+ set fromurl {}
+ set distance -1
+ if {[RobotFileExist $task unvisited $URL($task,$url,hostport) $URL($task,$url,path)]} {
+ set inf [RobotFileOpen $task unvisited $URL($task,$url,hostport) $URL($task,$url,path) r]
+ RobotReadRecord $inf fromurl distance
+ RobotFileClose $inf
+ }
+ RobotFileUnlink $task unvisited $URL($task,$url,hostport) $URL($task,$url,path)
+ if {![RobotFileExist $task bad $URL($task,$url,hostport) $URL($task,$url,path)]} {
+ set outf [RobotFileOpen $task bad $URL($task,$url,hostport) $URL($task,$url,path)]
+ RobotWriteRecord $outf $fromurl $distance
+ RobotFileClose $outf
+ }
+}
+
+proc RobotRedirect {task url tourl code} {
+ global URL
+
+ dbgmsg "Redirecting from $url to $tourl"
+
+ set distance {}
+ set fromurl {}
+ if {[RobotFileExist $task unvisited $URL($task,$url,hostport) $URL($task,$url,path)]} {
+ set inf [RobotFileOpen $task unvisited $URL($task,$url,hostport) $URL($task,$url,path) r]
+ RobotReadRecord $inf fromurl distance
+ RobotFileClose $inf
+ }
+ if {![RobotFileExist $task bad $URL($task,$url,hostport) $URL($task,$url,path)]} {
+ set outf [RobotFileOpen $task bad $URL($task,$url,hostport) $URL($task,$url,path)]
+ RobotWriteRecord $outf $fromurl $distance
+ RobotFileClose $outf
+ }
+ if {[RobotHref $task $url tourl host path]} {
+ if {![RobotFileExist $task visited $host $path]} {
+ if {![RobotFileExist $task unvisited $host $path]} {
+ set outf [RobotFileOpen $task unvisited $host $path]
+ RobotWriteRecord $outf $fromurl $distance
+ RobotFileClose $outf
+ }
+ } else {
+ set olddistance {}
+ set inf [RobotFileOpen $task visited $host $path r]
+ RobotReadRecord $inf oldurl olddistance
+ RobotFileClose $inf
+ if {[string length $olddistance] == 0} {
+ set olddistance 1000
+ }
+ if {[string length $distance] == 0} {
+ set distance 1000
+ }
+ dbgmsg "distance=$distance olddistance=$olddistance"
+ if {[expr $distance < $olddistance]} {
+ set outf [RobotFileOpen $task unvisited $host $path]
+ RobotWriteRecord $outf $tourl $distance
+ RobotFileClose $outf
+ }
+ }
+ }
+ if {[catch {RobotFileUnlink $task unvisited $URL($task,$url,hostport) $URL($task,$url,path)}]} {
+ dbgmsg "unlink failed"
+ exit 1
+ }
+}
+
+proc wellform {body} {
+ regsub -all {} $body { } abody
+ regsub -all -nocase {