X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=robot.tcl;h=2e175d623cb41f9c62a06a7b0d318a29dca11b45;hb=833faf12d797d629cae34abc8e84e88a6044eb7f;hp=9b672cd52968a1164de792fed43818eacd4a45d1;hpb=aff790b94e4679bf6e1b6e181e9dc28ecf1c75ba;p=tclrobot.git

diff --git a/robot.tcl b/robot.tcl
index 9b672cd..2e175d6 100755
--- a/robot.tcl
+++ b/robot.tcl
@@ -1,8 +1,8 @@
 #!/usr/bin/tclsh 
-# $Id: robot.tcl,v 1.12 2001/01/23 14:28:41 adam Exp $
+# $Id: robot.tcl,v 1.25 2001/11/07 11:50:07 adam Exp $
 #
 proc RobotFileNext1 {area lead} {
-    puts "RobotFileNext1 area=$area lead=$lead"
+    # puts "RobotFileNext1 area=$area lead=$lead"
     if {[catch {set ns [glob ${area}/*]}]} {
         return {}
     }
@@ -43,16 +43,16 @@ proc RobotReadRecord {inf fromurlx distancex} {
     gets $inf
     gets $inf
     set distance [string trim [gets $inf]]
-    puts "got distance = $distance"
+    # puts "got distance = $distance"
     gets $inf
     gets $inf
     set fromurl [string trim [gets $inf]]
 }
 
 proc RobotFileNext {area} {
-    global robotSeq global idleTime ns
+    global robotSeq global idletime ns
 
-    puts "RobotFileNext robotSeq=$robotSeq"
+    # puts "RobotFileNext robotSeq=$robotSeq"
     if {$robotSeq < 0} {
 	return {}
     }
@@ -67,7 +67,7 @@ proc RobotFileNext {area} {
     if {![string length $n]} {
 	set robotSeq -1
 	flush stdout
-	puts "------------ N E X T  R O U N D --------"
+	puts "Round robin"
 	return wait
     }
     incr robotSeq
@@ -87,27 +87,27 @@ proc RobotFileNext {area} {
 
 
 proc RobotFileExist {area host path} {
-    puts "RobotFileExist begin area=$area host=$host path=$path"
+    # puts "RobotFileExist begin area=$area host=$host path=$path"
     set lpath [split $path /]
     set l [llength $lpath]
     incr l -1
     set t [lindex $lpath $l]
     incr l -1
     set npath $area/$host[join [lrange $lpath 0 $l] /d]/f$t
-    puts "RobotFileExist end npath=$npath"
+    # puts "RobotFileExist end npath=$npath"
     return [file exists $npath]
 }
 
 proc RobotFileUnlink {area host path} {
-    puts "RobotFileUnlink begin"
-    puts "area=$area host=$host path=$path"
+    # puts "RobotFileUnlink begin"
+    # puts "area=$area host=$host path=$path"
     set lpath [split $path /]
     set l [llength $lpath]
     incr l -1
     set t [lindex $lpath $l]
     incr l -1
     set npath $area/$host[join [lrange $lpath 0 $l] /d]/f$t
-    puts "npath=$npath"
+    # puts "npath=$npath"
     set comp [split $npath /]
     set l [llength $comp]
     incr l -1
@@ -118,7 +118,7 @@ proc RobotFileUnlink {area host path} {
 	if {![catch {glob $path/*}]} return
         exec rmdir ./$path
     }
-    puts "RobotFileUnlink end"
+    # puts "RobotFileUnlink end"
 }
 
 proc RobotFileClose {out} {
@@ -134,7 +134,7 @@ proc RobotFileOpen {area host path {mode w}} {
     if {![info exists workdir]} {
 	return stdout
     }
-    puts "RobotFileOpen orgPwd=$orgPwd area=$area host=$host path=$path mode=$mode"
+    #puts "RobotFileOpen orgPwd=$orgPwd area=$area host=$host path=$path mode=$mode"
     if {[string compare $orgPwd $workdir]} {
         puts "ooops. RobotFileOpen failed"
 	puts "workdir = $workdir"
@@ -201,9 +201,9 @@ proc RobotRestart {url sock} {
 
 proc RobotStart {} {
     global URL
-    global robotsRunning robotsMax idleTime
+    global robotsRunning robotsMax idletime
   
-    puts "RobotStart"
+    # puts "RobotStart"
     while {1} {
         set url [RobotFileNext unvisited]
         if {![string length $url]} {
@@ -211,7 +211,7 @@ proc RobotStart {} {
 	}
 	incr robotsRunning
 	if {[string compare $url wait] == 0} {
-	    after $idleTime RobotRR
+	    after $idletime RobotRR
 	    return
 	}
         set r [RobotGetUrl $url {}]
@@ -254,16 +254,24 @@ proc headSave {url out} {
 }
 
 proc RobotHref {url hrefx hostx pathx} {
-    global URL domains
+    global URL domains debuglevel
     upvar $hrefx href
     upvar $hostx host
     upvar $pathx path
 
-    puts "Ref url = $url href=$href"
+    if {$debuglevel > 1} {
+        puts "Ref input url = $url href=$href"
+    }
 
     if {[string first { } $href] >= 0} {
 	return 0
     }
+    if {[string length $href] > 256} {
+	return 0
+    }
+    if {[string first {?} $href] >= 0} {
+	return 0
+    }
     if {[string first {?} $url] >= 0 && [string first {?} $href] >= 0} {
 	return 0
     }
@@ -310,38 +318,45 @@ proc RobotHref {url hrefx hostx pathx} {
 	    set surl $dpart/$surl
 	}
     }
-    set c [split $surl /]
-    set i [llength $c]
-    incr i -1
-    set path [lindex $c $i]
-    incr i -1
-    while {$i >= 0} {
-	switch -- [lindex $c $i] {
+    set surllist [split $surl /]
+    catch {unset path}
+    set pathl 0
+    foreach c $surllist {
+        switch -- $c {
 	    .. {
-		incr i -2
-		if {$i < 0} {
-		    set i 0
+ 		if {$pathl > 0} {
+		    incr pathl -2
+		    set path [lrange $path 0 $pathl]
+		    incr pathl
 		}
 	    }
-	    . {
-		incr i -1
-	    }
-	    default {
-		set path [lindex $c $i]/$path
-		incr i -1
+            . {
+
+            }
+            default {
+		incr pathl
+                lappend path $c
 	    }
 	}
     }
+    if {$pathl} {
+	set path [join $path /]
+    } else {
+	set path ""
+    }
     regsub -all {~} $path {%7E} path
     set href "$method://$host$path"
-    puts "Ref href = $href"
-    return 1
+
+    if {$debuglevel > 1} {
+        puts "Ref result = $href"
+    }
+    return [checkrule url $href]
 }
 
 proc RobotError {url code} {
     global URL
 
-    puts "Bad URL $url, $code"
+    puts "Bad URL $url (code $code)"
     set fromurl {}
     set distance -1
     if {[RobotFileExist unvisited $URL($url,hostport) $URL($url,path)]} {
@@ -407,10 +422,10 @@ proc RobotRedirect {url tourl code} {
 }
 
 proc RobotTextHtml {url out} {
-    global URL maxDistance
+    global URL maxdistance
 
     set distance 0
-    if {$maxDistance < 1000 && [info exists URL($url,dist)]} {
+    if {$maxdistance < 1000 && [info exists URL($url,dist)]} {
 	set distance [expr $URL($url,dist) + 1]
     }
     htmlSwitch $URL($url,buf) \
@@ -426,8 +441,9 @@ proc RobotTextHtml {url out} {
             }
 	    puts $out {></meta>}
 	} body {
-	    regsub -all -nocase {<script.*</script>} $body {} abody
-	    regsub -all {<[^\>]+>} $abody {} nbody
+	    regsub -all {<!--[^-]*->} $body { } abody
+	    regsub -all -nocase {<script[^<]*</script>} $abody {} bbody
+	    regsub -all {<[^\>]+>} $bbody {} nbody
 	    puts $out "<documentcontent>"
             puts $out $nbody
             puts $out "</documentcontent>"
@@ -436,7 +452,7 @@ proc RobotTextHtml {url out} {
 	        puts "no href"
 	        continue
             }
-	    if {[expr $distance <= $maxDistance]} {
+	    if {[expr $distance <= $maxdistance]} {
 		set href [string trim $parm(href)]
 		if {![RobotHref $url href host path]} continue
 		
@@ -481,6 +497,56 @@ proc RobotTextHtml {url out} {
 		    }
 		}
 	    }
+        } -nonest area {
+            if {![info exists parm(href)]} {
+	        puts "no href"
+	        continue
+            }
+	    if {[expr $distance <= $maxdistance]} {
+		set href [string trim $parm(href)]
+		if {![RobotHref $url href host path]} continue
+		
+		puts $out "<cr>"
+		puts $out "<identifier>$href</identifier>"
+		puts $out "<description></description>"
+		puts $out "</cr>"
+
+		if {![RobotFileExist visited $host $path]} {
+		    set olddistance 1000
+		    if {![RobotFileExist bad $host $path]} {
+			if {[RobotFileExist unvisited $host $path]} {
+			    set inf [RobotFileOpen unvisited $host $path r]
+			    RobotReadRecord $inf oldurl olddistance
+			    RobotFileClose $inf
+			}
+		    } else {
+			set olddistance 0
+		    }
+		    if {[string length $olddistance] == 0} {
+			set olddistance 1000
+		    }
+		    if {[expr $distance < $olddistance]} {
+			set outf [RobotFileOpen unvisited $host $path]
+			RobotWriteRecord $outf $url $distance
+			RobotFileClose $outf
+		    }
+		} elseif {[string compare $href $url]} {
+		    set inf [RobotFileOpen visited $host $path r]
+		    RobotReadRecord $inf xurl olddistance
+		    close $inf
+		    if {[string length $olddistance] == 0} {
+			set olddistance 1000
+		    }
+		    if {[expr $distance < $olddistance]} {
+			puts "OK remarking url=$url href=$href"
+			puts "olddistance = $olddistance"
+			puts "newdistance = $distance"
+		        set outf [RobotFileOpen unvisited $host $path]
+			RobotWriteRecord $outf $url $distance
+		        RobotFileClose $outf
+		    }
+		}
+	    }
 	}
 }
 
@@ -494,21 +560,21 @@ proc RobotsTxt0 {v buf} {
     global URL agent
     set section 0
     foreach l [split $buf \n] {
-	if {[regexp {([-A-Za-z]+):[ \t]*([^\#]+)} $l match cmd arg]} {
+	if {[regexp {([-A-Za-z]+):[ ]*([^\# ]+)} $l match cmd arg]} {
 	    puts "cmd=$cmd arg=$arg"
-	    switch $cmd {
-		User-Agent {
+	    switch -- [string tolower $cmd] {
+		user-agent {
 		    if {$section} break
 		    set pat [string tolower $arg]*
 		    set section [string match $pat $agent]
 		}
-		Disallow {
+		disallow {
 		    if {$section} {
 			puts "rule [list 0 $arg]"
 			lappend $v [list 0 $arg]
 		    }
 		}
-		Allow {
+		allow {
 		    if {$section} {
 			puts "rule [list 1 $arg]"
 			lappend $v [list 1 $arg]
@@ -523,7 +589,8 @@ proc RobotTextPlain {url out} {
     global URL
 
     puts $out "<documentcontent>"
-    puts $out $URL($url,buf)
+    regsub -all {<} $URL($url,buf) {\&lt;} content
+    puts $out $content
     puts $out "</documentcontent>"
 
     if {![string compare $URL($url,path) /robots.txt]} {
@@ -531,10 +598,9 @@ proc RobotTextPlain {url out} {
     }
 }
 
-proc Robot200 {url} {
+proc RobotWriteMetadata {url out} {
     global URL domains
-    
-    set out [RobotFileOpen visited $URL($url,hostport) $URL($url,path)]
+
     puts $out "<zmbot>"
 
     set distance 1000
@@ -550,30 +616,44 @@ proc Robot200 {url} {
     headSave $url $out
     puts "Parsing $url distance=$distance"
     switch $URL($url,head,content-type) {
-	text/html {
-	    if {[string length $distance]} {
-		RobotTextHtml $url $out
-	    }
-	}
-	text/plain {
-	    RobotTextPlain $url $out
-	}
-	application/pdf {
-	    set pdff [open test.pdf w]
-	    puts -nonewline $pdff $URL($url,buf)
-	    close $pdff
-	}
+        text/html {
+            if {[string length $distance]} {
+                RobotTextHtml $url $out
+            }
+        }
+        text/plain {
+            RobotTextPlain $url $out
+        }
+        application/pdf {
+            set pdff [open test.pdf w]
+            puts -nonewline $pdff $URL($url,buf)
+            close $pdff
+        }
     }
     puts $out "</zmbot>"
+}
+
+proc Robot200 {url} {
+    global URL domains
+    
+    set out [RobotFileOpen raw $URL($url,hostport) $URL($url,path)]
+    puts -nonewline $out $URL($url,buf)
+    RobotFileClose $out
+
+    if {![checkrule mime $URL($url,head,content-type)]} {
+        RobotError $url mimedeny
+        return
+    }
+    set out [RobotFileOpen visited $URL($url,hostport) $URL($url,path)]
+    RobotWriteMetadata $url $out
     RobotFileClose $out
-    # puts "Parsing done"
+
     RobotFileUnlink unvisited $URL($url,hostport) $URL($url,path)
 }
 
 proc RobotReadContent {url sock binary} {
     global URL
 
-    puts "RobotReadContent $url"
     set buffer [read $sock 16384]
     set readCount [string length $buffer]
 
@@ -590,9 +670,11 @@ proc RobotReadContent {url sock binary} {
 }
 
 proc RobotReadHeader {url sock} {
-    global URL
+    global URL debuglevel
 
-    puts "RobotReadHeader $url"
+    if {$debuglevel > 1} {
+        puts "HTTP head $url"
+    }
     if {[catch {set buffer [read $sock 2148]}]} {
 	RobotError $url 404
 	RobotRestart $url $sock
@@ -617,11 +699,11 @@ proc RobotReadHeader {url sock} {
 	    regexp {^HTTP/([0-9.]+)[ ]+([0-9]+)} $headbuf x version code
 	    set lines [split $headbuf \n]
 	    foreach line $lines {
-		if {[regexp {^([^:]+):[ ]+(.*)} $line x name value]} {
+		if {[regexp {^([^:]+):[ ]+([^;]*)} $line x name value]} {
 		    set URL($url,head,[string tolower $name]) [string trim $value]
 		}
 	    }
-	    puts "code = $code"
+	    puts "HTTP CODE $code"
 	    set URL($url,state) skip
 	    switch $code {
 		301 {
@@ -661,13 +743,16 @@ proc RobotSockCancel {url sock} {
 }
 
 proc RobotConnect {url sock} {
-    global URL agent
+    global URL agent acceptLanguage
 
     fconfigure $sock -translation {lf crlf} -blocking 0
     fileevent $sock readable [list RobotReadHeader $url $sock]
     puts $sock "GET $URL($url,path) HTTP/1.0"
     puts $sock "Host: $URL($url,host)"
     puts $sock "User-Agent: $agent"
+    if {[string length $acceptLanguage]} {
+        puts $sock "Accept-Language: $acceptLanguage"
+    }
     puts $sock ""
     flush $sock
     set URL($sock,cancel) [after 30000 [list RobotSockCancel $url $sock]]
@@ -680,7 +765,7 @@ proc RobotNop {} {
 proc RobotGetUrl {url phost} {
     global URL robotsRunning
     flush stdout
-    puts "RobotGetUrl --------- robotsRunning=$robotsRunning url=$url"
+    puts "Retrieve $robotsRunning url=$url"
     if {![regexp {([^:]+)://([^/]+)(.*)} $url x method hostport path]} {
         return -1
     }
@@ -704,7 +789,7 @@ proc RobotGetUrl {url phost} {
 		set buf [read $inf 32768]
 		close $inf
 	    } else {
-		set buf "User-Agent: *\nAllow: /\n"
+		set buf "User-agent: *\nAllow: /\n"
 	    }
 	    RobotsTxt0 URL($hostport,robots) $buf
 	}
@@ -717,6 +802,7 @@ proc RobotGetUrl {url phost} {
 	    }
 	}
 	if {!$ok} {
+	    puts "skipped due to robots.txt"
 	    return -1
 	}
     }
@@ -735,7 +821,7 @@ if {![llength [info commands htmlSwitch]]} {
     }
 }
 
-set agent "zmbot/0.0"
+set agent "zmbot/0.1"
 if {![catch {set os [exec uname -s -r]}]} {
     set agent "$agent ($os)"
 }
@@ -751,17 +837,108 @@ proc bgerror {m} {
 set robotsRunning 0
 set robotSeq 0
 set workdir [pwd]
-set idleTime 60000
+set idletime 60000
+set acceptLanguage {}
 
 set i 0
 set l [llength $argv]
 
 if {$l < 2} {
-    puts {tclrobot: usage [-j jobs] [-c count] [-d domain] [url ..]}
+    puts {tclrobot: usage:}
+    puts {tclrobot [-j jobs] [-i idle] [-c count] [-d domain] [-r rules] [url ..]}
     puts " Example: -c 3 -d '*.dk' http://www.indexdata.dk/"
     exit 1
 }
 
+# Rules: allow, deny, url
+set debuglevel 0
+
+proc checkrule {type this} {
+    global alrules
+    global debuglevel
+
+    if {$debuglevel > 3} {
+        puts "CHECKRULE $type $this"
+    }
+    if {[info exist alrules]} {
+        foreach l $alrules {
+            if {$debuglevel > 3} {
+                puts "consider $l"
+            }
+            # consider type
+            if {[lindex $l 1] != $type} continue
+            # consider mask (! negates)
+            set masks [lindex $l 2]
+	    set ok 0
+	    foreach mask $masks {	
+                if {$debuglevel > 4} {
+                    puts "consider single mask $mask"
+                }
+                if {[string index $mask 0] == "!"} {
+                    set mask [string range $mask 1 end]
+                    if {[string match $mask $this]}  continue
+                } else {
+                    if {![string match $mask $this]} continue
+                }
+                set ok 1
+            }
+            if {$debuglevel > 4} {
+                puts "ok = $ok"
+            }
+            if {!$ok} continue
+            # OK, we have a match
+            if {[lindex $l 0] == "allow"} {
+                if {$debuglevel > 3} {
+                    puts "CHECKRULE MATCH OK"
+                }
+                return 1
+            } else {
+                if {$debuglevel > 3} {
+                    puts "CHECKFULE MATCH FAIL"
+                }
+                return 0
+            }
+        }
+    }
+    if {$debuglevel > 3} {
+        puts "CHECKRULE MATCH OK"
+    }
+    return 1
+}
+
+
+proc url {href} {
+    global debuglevel
+
+    if {[RobotHref http://www.indexdata.dk/ href host path]} {
+        if {![RobotFileExist visited $host $path]} {
+            set outf [RobotFileOpen unvisited $host $path]
+            RobotWriteRecord $outf href 0
+            RobotFileClose $outf
+        }
+    }
+}
+
+proc deny {type stuff} {
+    global alrules
+
+    lappend alrules [list deny $type $stuff]
+}
+
+proc allow {type stuff} {
+    global alrules
+
+    lappend alrules [list allow $type $stuff]
+}
+
+proc debug {level} {
+    global debuglevel
+
+    set debuglevel $level
+}
+
+# Parse options
+
 while  {$i < $l} {
     set arg [lindex $argv $i]
     switch -glob -- $arg {
@@ -772,9 +949,9 @@ while  {$i < $l} {
 	    }
 	}
 	-c* {
-	    set maxDistance [string range $arg 2 end]
-	    if {![string length $maxDistance]} {
-		set maxDistance [lindex $argv [incr i]]
+	    set maxdistance [string range $arg 2 end]
+	    if {![string length $maxdistance]} {
+		set maxdistance [lindex $argv [incr i]]
 	    }
 	}
 	-d* {
@@ -784,6 +961,25 @@ while  {$i < $l} {
 	    }
 	    lappend domains $dom
 	}
+	-i* {
+	    set idletime [string range $arg 2 end]
+	    if {![string length $idletime]} {
+		set idletime [lindex $argv [incr i]]
+	    }
+	}
+        -l* {
+	    set acceptLanguage [string range $arg 2 end]
+	    if {![string length $acceptLanguage]} {
+		set acceptLanguage [lindex $argv [incr i]]
+ 	    }
+	}
+        -r* {
+	    set rfile [string range $arg 2 end]
+	    if {![string length $rfile]} {
+		set rfile [lindex $argv [incr i]]
+ 	    }
+            source $rfile
+        }
 	default {
 	    set href $arg
 	    if {[RobotHref http://www.indexdata.dk/ href host path]} {
@@ -801,15 +997,15 @@ while  {$i < $l} {
 if {![info exist domains]} {
     set domains {*}
 }
-if {![info exist maxDistance]} {
-    set maxDistance 3
+if {![info exist maxdistance]} {
+    set maxdistance 50
 }
 if {![info exist robotsMax]} {
     set robotsMax 5
 }
 
 puts "domains=$domains"
-puts "max distance=$maxDistance"
+puts "max distance=$maxdistance"
 puts "max jobs=$robotsMax"
 
 RobotStart