X-Git-Url: https://git.p6c8.net/selfforum.git/blobdiff_plain/f247cc770243a474bbba7845094047e0995b9746..8f99a6e4fd14417d4724241f30d154abdc27e789:/selfforum-cgi/shared/Encode/Posting.pm?ds=sidebyside diff --git a/selfforum-cgi/shared/Encode/Posting.pm b/selfforum-cgi/shared/Encode/Posting.pm index 0140dfb..ffafbf1 100644 --- a/selfforum-cgi/shared/Encode/Posting.pm +++ b/selfforum-cgi/shared/Encode/Posting.pm @@ -1,230 +1,251 @@ -# Posting.pm +package Encode::Posting; -# ==================================================== -# Autor: n.d.p. / 2001-01-07 -# lm : n.d.p. / 2001-02-25 -# ==================================================== -# Funktion: -# Spezielle Codierung eines Postingtextes -# ==================================================== +################################################################################ +# # +# File: shared/Encode/Posting.pm # +# # +# Authors: André Malo , 2001-04-10 # +# # +# Description: prepare a Posting text for saving and visual (HTML) output # +# # +################################################################################ use strict; -package Encode::Posting; - -use vars qw(@EXPORT); use Encode::Plain; $Encode::Plain::utf8 = 1; +use CheckRFC; -# ==================================================== -# Funktionsexport -# ==================================================== - +################################################################################ +# +# Export +# use base qw(Exporter); -@EXPORT = qw(encoded_body answer_field message_field); +@Encode::Posting::EXPORT = qw( + encoded_body + answer_field + message_field +); -################################ -# sub encoded_body +### sub rel_uri ($$) ########################################################### +# +# generate an absolute URI from a absolute|relative one +# (not for public use) # -# Nachrichtentext in gueltiges -# HTML konvertieren -################################ +# Params: $uri - URI +# $base - base URI +# +# Return: abs URI as string +# +sub rel_uri ($$) { + my ($uri, $base) = @_; + + "http://$ENV{HTTP_HOST}". + ($uri =~ m|^/| + ? $uri + : "$base$uri"); +} +### sub encoded_body ($;$) ##################################################### +# +# prepare posting text for saving +# +# Params: $posting - scalar reference of the raw text +# $params - hash reference +# (quoteChars messages) +# +# Return: scalar reference of the encoded text +# sub encoded_body ($;$) { my $posting = ${+shift}; my $params = shift; - $posting =~ s/[ \t]$//gm; # Whitespaces am Zeilenende entfernen - $posting =~s /\s+$//; # Whitespaces am Stringende entfernen - $posting = ${plain (\$posting)}; # Sonderzeichen maskieren + $posting =~ s/\015\012|\015|\012/\n/g; # normalize newlines + $posting =~ s/[^\S\n]+$//gm; # kill whitespaces at the end of all lines + $posting =~ s/\s+$//; # kill whitespaces (newlines) at the end of the string (text) + + # check the special syntaxes: + + my $base = $params -> {base_uri}; + # collect all [link:...] strings + # + my @rawlinks; + push @rawlinks => [$1 => $2] while ($posting =~ /\[([Ll][Ii][Nn][Kk]):\s*([^\]\s]+)\s*\]/g); + my @links = grep { + is_URL ( $_ -> [1] => ':ALL') + or is_URL (($_ -> [1] =~ /^[Vv][Ii][Ee][Ww]-[Ss][Oo][Uu][Rr][Cc][Ee]:(.+)/)[0] || '' => 'http') + or ( $_ -> [1] =~ m<^(?:\.?\.?/(?!/)|\?)> + and is_URL (rel_uri ($_ -> [1], $base) => 'http')) + } @rawlinks; + + # collect all [image:...] strings + # + my @rawimages; + push @rawimages => [$1 => $2] while ($posting =~ /\[([Ii][Mm][Aa][Gg][Ee]):\s*([^\]\s]+)\s*\]/g); + my @images = grep { + is_URL ($_ -> [1] => 'strict_http') + or ( $_ -> [1] =~ m<^(?:\.?\.?/(?!/)|\?)> + and is_URL (rel_uri ($_ -> [1], $base) => 'http')) + } @rawimages; + + # collect all [iframe:...] strings + # + my @rawiframes; + push @rawiframes => [$1 => $2] while ($posting =~ /\[([Ii][Ff][Rr][Aa][Mm][Ee]):\s*([^\]\s]+)\s*\]/g); + my @iframes = grep { + is_URL ($_ -> [1] => 'http') + or ( $_ -> [1] =~ m<^(?:\.?\.?/(?!/)|\?)> + and is_URL (rel_uri ($_ -> [1], $base) => 'http')) + } @rawiframes; + + # collect all [msg:...] strings + # + $params -> {messages} = {} unless (defined $params -> {messages}); + my %msg = map {lc($_) => $params -> {messages} -> {$_}} keys %{$params -> {messages}}; - # Quotingzeichen normalisieren (\177) - my $quote = plain($params -> {quoteChars}); - my $qquote = quotemeta $quote; - my $len = length ($quote); - $posting =~ s!^((?:$qquote)+)(.*)$!"\177" x (length($1)/$len) .$2!gem if (length ($qquote)); + my @rawmsgs; + push @rawmsgs => [$1 => $2] while ($posting =~ /\[([Mm][Ss][Gg]):\s*([^\]\s]+)\s*\]/g); + my @msgs = grep {exists ($msg{lc($_ -> [1])})} @rawmsgs; - # Multine - $posting = ${multiline (\$posting)}; + # encode Entities and special characters + # + $posting = ${plain (\$posting)}; - # normaler Link - $posting =~ s{\[link:\s* - ((?:ftp:// # hier beginnt $1 - | https?:// - | about: - | view-source: - | gopher:// - | mailto: - | news: - | nntp:// - | telnet:// - | wais:// - | prospero:// - | \.\.?/ # relativ auf dem server - | / # absolut auf dem server - | (?:[a-zA-Z.\d]+)?\?? # im forum - ) [^\s<'()\[\]]+ # auf jeden Fall kein \s und kein ] etc. - ) # hier ist $1 zuende - \s*(?:\]|(\s|\(|\)|
)) # der Begrenzer (\s, ] oder Zeilenende) - } - {$1$2}gix; # und der Link - - # javascript-links extra - my $klammer1='\((?:[^)])*\)'; - my $klammer2="\\((?:$klammer1|(?:[^)])*)\\)"; - my $klammer3="\\((?:$klammer2|(?:[^)])*)\\)"; - my $klammer4="\\((?:$klammer3|(?:[^)])*)\\)"; - - $posting =~ s{\[link:\s* - (javascript: # hier beginnt $1 - (?: - $klammer4 # Klammern bis Verschachtelungstiefe 4 (sollte reichen?) - | '[^\'\\]*(?:\\.[^\'\\]*)*' # mit ' quotierter String, J.F. sei gedankt - # im String sind Escapes zugelassen (also auch \') - # damit werden (korrekt gesetzte) Javascript-Links moeglich - | [^\s<()'\]]+)+ # auf jeden Fall kein \s und kein ] (ausser im String) - ) # hier ist $1 zuende - \s*(?:\s|\]|(\(|\)|
)) # der Begrenzer (\s, ] oder Zeilenende) - } - {$1$2}gix; # und der Link - - # images - $posting =~ s{\[image:\s* - ((?:https?:// - | \.\.?/ # relativ auf dem server - | / # absolut auf dem server - | (?:[a-zA-Z.\d]+)?\?? # im forum - ) [^\s<'()\[\]]+ # auf jeden Fall kein \s und kein ] etc. - ) # hier ist $1 zuende - \s*(?:\]|(\s|\(|\)|
)) # der Begrenzer (\s, ] oder Zeilenende) - } - {$2}gix; # und das Bild - - # iframe - $posting =~ s{\[iframe:\s* - ((?:ftp:// - | https?:// - | about: - | view-source: - | gopher:// - | mailto: - | news: - | nntp:// - | telnet:// - | wais:// - | prospero:// - | \.\.?/ # relativ auf dem server - | / # absolut auf dem server - | [a-zA-Z\d]+(?:\.html?|/) # im forum (koennen eh nur threads oder verweise - # auf tiefere verzeichnisse sein) - )[^\s<'()\]]+ # auf jeden Fall kein \s und kein ] etc. (s.o.) - ) # hier ist $1 zuende - \s*(?:\]|(\s|\(|\)|
)) # der Begrenzer (\s, ] oder Zeilenende) - } - {$2}gix; + # encode the special syntaxes + # + $posting =~ s!$_!$1! + for (map {qr/\[\Q${plain(\$_->[0])}\E:\s*(\Q${plain(\$_->[1])}\E)\s*\]/} @links); - # [msg...] - $params -> {messages} = {} unless (defined $params -> {messages}); - my %msg = %{$params -> {messages}}; - foreach (keys %msg) { - $posting =~ s/\[msg:\s*$_(?:\s*\]|\s)/''.plain($msg{$_}->{alt}).''/gei;} + $posting =~ s!$_!! + for (map {qr/\[\Q${plain(\$_->[0])}\E:\s*(\Q${plain(\$_->[1])}\E)\s*\]/} @images); + + $posting =~ s!$_!! + for (map {qr/\[\Q${plain(\$_->[0])}\E:\s*(\Q${plain(\$_->[1])}\E)\s*\]/} @iframes); + + %msg = map {plain($_) => $msg{$_}} keys %msg; + $posting =~ s!$_!''.plain($msg{lc $1}->{alt}).''!e + for (map {qr/\[\Q${plain(\$_->[0])}\E:\s*(\Q${plain(\$_->[1])}\E)\s*\]/} @msgs); + + # normalize quote characters (quote => \177) + # + my $quote = plain(defined $params -> {quoteChars} ? $params -> {quoteChars} : ''); + my $len = length ($quote); + $posting =~ s!^((?:\Q$quote\E)+)!"\177" x (length($1)/$len)!gem if ($len); + + # \n =>
, fix spaces + # + $posting = ${multiline (\$posting)}; - # Rueckgabe + # return + # \$posting; } -################################ -# sub answer_field +### sub answer_field ($$) ###################################################### +# +# create the content of the answer textarea +# +# Params: $posting - scalar reference +# (posting text, 'encoded_body' encoded) +# $params - hash reference +# (quoteArea quoteChars messages) +# +# Return: scalar reference # -# Antwort HTML einer Message -# erzeugen -################################ - sub answer_field ($$) { my $posting = shift; - my $params = shift; - $params = {} unless (defined $params); + my $params = shift || {}; - # ================ - # Antwortfeld - # ================ my $area = $$posting; - my $qchar = $params -> {quoteChars}; - $area =~ s/(?:^|(
))(?!
)/$1\177/g if ($params -> {quoteArea}); # Antwortfeld quoten?! - $area =~ s/\177/$qchar/g; # normalisierte Quotes jedenfalls in Chars umsetzen + $area =~ s/
/\n/g; #
=> \n + $area =~ s/&(?:#160|nbsp);/ /g; # nbsp => ' ' - # HTML-Zeug zurueckuebersetzen + $area =~ s/^(.)/\177$1/gm if ($params -> {quoteArea}); # shift a quoting character + $area =~ s/^(\177+)/$qchar x length ($1)/gem; # decode normalized quoting characters - $params -> {messages} = {} unless (defined $params -> {messages}); # um Fehlermeldungen auszuschliessen... - my %msg = map {($params -> {messages} -> {$_} -> {src} => $_)} keys %{$params -> {messages}}; + # recode special syntaxes + # from HTML to [...] constructions + # + $params -> {messages} = {} unless (defined $params -> {messages}); # avoid error messages + my %msg = map { + $params -> {messages} -> {$_} -> {src} => $_ + } keys %{$params -> {messages}}; # we have to lookup reverse ... - $area =~ s{]+>.*?|]+>|]*>|.*?} - {if (defined $1) {"[iframe: $1]"} - elsif (defined $2) {"[msg: $msg{$2}]"} - elsif (defined $3) {"[image: $3]"} - elsif (defined $4) {"[link: $4]"}}eg; - $area =~ s/
/\n/g; - $area =~ s/&(?:#160|nbsp);/ /g; + # [msg...] + $area =~ s{(]+>)} { + defined $msg{$2} + ? "[msg: $msg{$2}]" + : $1; + }ge; - # Rueckgabe + # [iframe...] + $area =~ s{]+>.*?} {[iframe: $1]}g; + + # [image...] + $area =~ s{]*>}{[image: $1]}g; + + # [link...] + $area =~ s{.*?}{[link: $1]}g; + + # return + # \$area; } -################################ -# sub message_field +### sub message_field ($$) ##################################################### +# +# prepare the posting text for visual output +# +# Params: $posting - scalar reference +# (raw posting text, 'encoded_body' encoded) +# $params - hash reference +# (quoteChars quoting startCite endCite) +# +# Return: scalar rerence (prepared posting text) # -# HTML eines Postingtextes -# erzeugen -################################ - sub message_field ($$) { my $posting = ${+shift}; - my $params = shift; - $params = {} unless (defined $params); + my $params = shift || {}; + + my $break = '
'; + + if ($params -> {quoting}) { # quotes are displayed as special? + my @array = [0 => []]; + + for (split /
/ => $posting) { + my $l = length ((/^(\177*)/)[0]); + if ($array[-1][0] == $l) { + push @{$array[-1][-1]} => $_; + } + else { + push @array => [$l => [$_]]; + } + } + shift @array unless @{$array[0][-1]}; + + my $ll=0; + $posting = join '
' => map { + my $string = $_->[0] + ? (($ll and $ll != $_->[0]) ? $break : '') . + join join ($break => @{$_->[-1]}) + => ($params->{startCite}, $params->{endCite}) + : (join $break => @{$_->[-1]}); + $ll = $_->[0]; $string; + } @array; + } - # ================ - # Postingtext - # ================ my $qchar = $params -> {quoteChars}; + $posting =~ s/\177/$qchar/g; # \177 => quote chars - if ($params -> {quoting}) { # Quotes bekommen eine extra Klasse? - # ueberfluessige Abstaende entfernen, - # sie werden eh wieder auseinandergezogen... - $posting =~ s/(\177(?:[^<]|<(?!br>))*
)
(?=\177)/$1/g; - $posting =~ s/(\177(?:[^<]|<(?!br>))*
)
(?!\177)/$1/g; - - my ($last_level, $level, $line, $q, @new)=(-1,0); - - foreach $line (split (/
/,$posting)) { # Zeilenweise gucken, - ($q) = ($line =~ /^(\177+)/g); # wieviele - $level = length ($q); # Quotingchars am Anfang stehen - if ($level != $last_level) { # wenn sich was verandert... - # ... dann TU ETWAS! - - if ($last_level <= 0 and $level > 0) {$last_level = $level; $line='
'.$params -> {startCite} . $line} - elsif ($level > 0) {$last_level = $level; $line=$params -> {endCite} . '
' . $params -> {startCite} . $line} - elsif ($level == 0 and $last_level > 0) {$last_level = -1; $line = $params -> {endCite} . '
' . $line}} - - push @new,$line} - - $new[0] =~ s/^
//; - $posting = (join '
',@new) . (($last_level > 0)?$params -> {endCite}:'');} - - $posting =~ s/\177/$qchar/g; # normalisierte Quotes in Chars umsetzen - - # Rueckgabe + # return + # \$posting; } - -# ==================================================== -# Modulinitialisierung -# ==================================================== - -# making require happy +# keeping 'require' happy 1; -# ==================================================== -# end of Encode::Posting -# ==================================================== \ No newline at end of file +# +# +### end of Encode::Posting ##################################################### \ No newline at end of file