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# # # 02_RSS.pm # written by Dr. Boris Neubert 2012-03-24 # e-mail: omega at online dot de # ############################################## # $Id: $ package main; use strict; use warnings; use GD; use vars qw(%data); # we can # use vars qw(%FW_types); # device types, # use vars qw($FW_RET); # Returned data (html) # use vars qw($FW_wname); # Web instance # use vars qw($FW_subdir); # Sub-path in URL for extensions, e.g. 95_FLOORPLAN # use vars qw(%FW_pos); # scroll position # use vars qw($FW_cname); # Current connection name ######################### sub RSS_addExtension($$$) { my ($func,$link,$friendlyname)= @_; my $url = "/" . $link; $data{FWEXT}{$url}{FUNC} = $func; $data{FWEXT}{$url}{LINK} = $link; $data{FWEXT}{$url}{NAME} = $friendlyname; } ################## sub RSS_Initialize($) { my ($hash) = @_; $hash->{DefFn} = "RSS_Define"; #$hash->{AttrFn} = "RSS_Attr"; $hash->{AttrList}= "loglevel:0,1,2,3,4,5 size bg tmin"; $hash->{SetFn} = "RSS_Set"; RSS_addExtension("RSS_CGI","rss","RSS"); return undef; } ################## sub RSS_readLayout($) { my ($hash)= @_; my $filename= $hash->{fhem}{filename}; my $name= $hash->{NAME}; if(open(LAYOUT, $filename)) { my @layout= ; $hash->{fhem}{layout}= join("", @layout); close(LAYOUT); } else { $hash->{fhem}{layout}= (); Log 1, "RSS $name: Cannot open $filename"; } } ################## sub RSS_Define($$) { my ($hash, $def) = @_; my @a = split("[ \t]+", $def); return "Usage: define RSS jpg hostname filename" if(int(@a) != 5); my $name= $a[0]; my $style= $a[2]; my $hostname= $a[3]; my $filename= $a[4]; $hash->{fhem}{style}= $style; $hash->{fhem}{hostname}= $hostname; $hash->{fhem}{filename}= $filename; RSS_readLayout($hash); $hash->{STATE} = $name; return undef; } ################## sub RSS_Set() { my ($hash, @a) = @_; my $name = $a[0]; # usage check my $usage= "Usage: set $name rereadcfg"; if((@a == 2) && ($a[1] eq "rereadcfg")) { RSS_readLayout($hash); return undef; } else { return $usage; } } #################### # sub RSS_getURL($) { my ($hostname)= @_; # http://hostname:8083/fhem return "http://$hostname:" . $defs{$FW_wname}{PORT} . $FW_ME; } # ################## # sub # RSS_Attr(@) # { # my @a = @_; # my $attr= $a[2]; # # if($a[0] eq "set") { # set attribute # if($attr eq "bgdir") { # } # } # elsif($a[0] eq "del") { # delete attribute # if($attr eq "bgdir") { # } # } # # return undef; # # } ################## # list all RSS devices sub RSS_Overview { my ($name, $url); my $html= "\n"; foreach my $def (sort keys %defs) { if($defs{$def}{TYPE} eq "RSS") { $name= $defs{$def}{NAME}; $url= RSS_getURL($defs{$def}{fhem}{hostname}); $html.= " $name
\n"; } } $html.=""; return ("text/html; charset=utf-8", $html); } ################## sub RSS_splitRequest($) { # http://hostname:8083/fhem/rss # http://hostname:8083/fhem/rss/myDeviceName.rss # http://hostname:8083/fhem/rss/myDeviceName.jpg # |--------- url ----------| |---name --| ext my ($request) = @_; if($request =~ /^.*\/rss$/) { # http://localhost:8083/fhem/rss return (undef,undef); # name, ext } else { # http://hostname:8083/fhem/rss/myDeviceName.rss # http://hostname:8083/fhem/rss/myDeviceName.jpg my $call= $request; $call =~ s/^.*\/rss\/([^\/]*)$/$1/; my $name= $call; $name =~ s/^(.*)\.(jpg|rss)$/$1/; my $ext= $call; $ext =~ s/^$name\.(.*)$/$1/; return ($name,$ext); } } ################## sub RSS_returnRSS($) { my ($name) = @_; my $url= RSS_getURL($defs{$name}{fhem}{hostname}); my $code= "$name1"; return ("application/xml; charset=utf-8", $code); } ################## # Library ################## sub RSS_xy($$$) { my ($S,$x,$y)= @_; if($x<1) { $x*= $S->width; } if($y<1) { $y*= $S->height; } return($x,$y); } sub RSS_color { my ($S,$rgb)= @_; my @d= split("", $rgb); return $S->colorResolve(hex("$d[0]$d[1]"),hex("$d[2]$d[3]"),hex("$d[4]$d[5]")); } sub RSS_itemText { my ($S,$x,$y,$text,%params)= @_; ($x,$y)= RSS_xy($S,$x,$y); $S->stringFT(RSS_color($S,$params{rgb}),$params{font},$params{pt},0,$x,$y,$text); } sub RSS_itemTime { my ($S,$x,$y,%params)= @_; my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time); RSS_itemText($S,$x,$y,sprintf("%02d:%02d", $hour, $min),%params); } sub RSS_itemGif { my ($S,$x,$y,$host,$filename,%params)= @_; return if($host eq ""); return if($filename eq ""); ($x,$y)= RSS_xy($S,$x,$y); my $data = GetHttpFile($host,$filename); return unless(defined($data)); my $I= GD::Image->newFromGifData($data); my ($width,$height)= $I->getBounds(); Log 5, "RSS placing $host$filename ($width x $height) at ($x,$y)"; $S->copy($I,$x,$y,0,0,$width,$height); } ################## sub RSS_evalLayout($$@) { my ($S,$name,$layout)= @_; my @layout= split("\n", $layout); my %params; $params{font}= "Arial"; $params{pt}= 12; $params{rgb}= "ffffff"; my ($x,$y,$text,$host,$filename); my $cont= ""; foreach my $line (@layout) { # kill trailing newline chomp $line; # kill comments and blank lines $line=~ s/\#.*$//; $line=~ s/\s+$//; $line= $cont . $line; if($line=~ s/\\$//) { $cont= $line; undef $line; } next unless($line); $cont= ""; #Log 5, "$name: evaluating >$line<"; # split line into command and definition my ($cmd, $def)= split("[ \t]+", $line, 2); #Log 5, "CMD= \"$cmd\", DEF= \"$def\""; if($cmd eq "rgb") { $params{rgb}= $def; } elsif($cmd eq "font") { $params{font}= $def; } elsif($cmd eq "pt") { $params{pt}= $def; } elsif($cmd eq "text") { ($x,$y,$text)= split("[ \t]+", $def, 3); my $txt= AnalyzePerlCommand(undef, $text); #Log 5, "$name: ($x,$y) $txt"; RSS_itemText($S,$x,$y,$txt,%params); } elsif($cmd eq "time") { ($x,$y)= split("[ \t]+", $def, 2); RSS_itemTime($S,$x,$y,%params); } elsif($cmd eq "gif") { ($x,$y,$host,$filename)= split("[ \t]+", $def,4); my $fn= AnalyzePerlCommand(undef, $filename); RSS_itemGif($S,$x,$y,$host,$fn,%params); } else { Log 1, "$name: Illegal command $cmd in layout definition."; } } } ################## sub RSS_returnJPEG($) { my ($name)= @_; my ($width,$height)= split(/x/, AttrVal($name,"size","800x600")); # # increase counter # if(defined($defs{$name}{fhem}) && defined($defs{$name}{fhem}{counter})) { $defs{$name}{fhem}{counter}++; } else { $defs{$name}{fhem}{counter}= 1; } # # create the image # my $S= GD::Image->newTrueColor($width,$height); $S->colorAllocate(0,0,0); # black is the background # # set the background # # check if background directory is set my $bgdir= AttrVal($name,"bg",""); goto SKIPBG unless($bgdir ne ""); my $bgnr; # item number if(defined($defs{$name}{fhem}) && defined($defs{$name}{fhem}{bgnr})) { $bgnr= $defs{$name}{fhem}{bgnr}; } else { $bgnr= 0; } # check if at least tmin seconds have passed my $t0= 0; my $tmin= AttrVal($name,"tmin",0); if(defined($defs{$name}{fhem}) && defined($defs{$name}{fhem}{t})) { $t0= $defs{$name}{fhem}{t}; } my $t1= time(); if($t1-$t0>= $tmin) { $defs{$name}{fhem}{t}= $t1; $bgnr++; } # detect pictures goto SKIPBG unless(opendir(BGDIR, $bgdir)); my @bgfiles= grep {$_ !~ /^\./} readdir(BGDIR); closedir(BGDIR); # get item number if($#bgfiles>=0) { if($bgnr > $#bgfiles) { $bgnr= 0; } $defs{$name}{fhem}{bgnr}= $bgnr; my $bgfile= $bgdir . "/" . $bgfiles[$bgnr]; my $bg= newFromJpeg GD::Image($bgfile); my ($bgwidth,$bgheight)= $bg->getBounds(); $S->copyResized($bg,0,0,0,0,$width,$height,$bgwidth,$bgheight); } SKIPBG: # # evaluate layout # RSS_evalLayout($S, $name, $defs{$name}{fhem}{layout}); # # return jpeg image # return ("image/jpeg; charset=utf-8", $S->jpeg); } ################## # # here we answer any request to http://host:port/fhem/rss and below sub RSS_CGI(){ my ($request) = @_; # /rss or /rss/name.rss or /rss/name.jpg my ($name,$ext)= RSS_splitRequest($request); # name, ext (rss, jpg) if(defined($name)) { if($ext eq "") { return("text/plain; charset=utf-8", "Illegal extension."); } if(!defined($defs{$name})) { return("text/plain; charset=utf-8", "Unknown RSS device: $name"); } if($ext eq "jpg") { return RSS_returnJPEG($name); } elsif($ext eq "rss") { return RSS_returnRSS($name); } } else { return RSS_Overview(); } } # 1;