diff options
Diffstat (limited to 'lib/PublicInbox/WWW.pm')
| -rw-r--r-- | lib/PublicInbox/WWW.pm | 152 |
1 files changed, 151 insertions, 1 deletions
diff --git a/lib/PublicInbox/WWW.pm b/lib/PublicInbox/WWW.pm index 3562e46c..406802a9 100644 --- a/lib/PublicInbox/WWW.pm +++ b/lib/PublicInbox/WWW.pm @@ -6,6 +6,7 @@ # We focus on the lowest common denominators here: # - targeted at text-only console browsers (w3m, links, etc..) # - Only basic HTML, CSS only for line-wrapping <pre> text content for GUIs +# and diff/syntax-highlighting (optional) # - No JavaScript, graphics or icons allowed. # - Must not rely on static content # - UTF-8 is only for user-content, 7-bit US-ASCII for us @@ -19,12 +20,14 @@ use URI::Escape qw(uri_unescape); use PublicInbox::MID qw(mid_escape); require PublicInbox::Git; use PublicInbox::GitHTTPBackend; +use PublicInbox::UserContent; # TODO: consider a routing tree now that we have more endpoints: our $INBOX_RE = qr!\A/([\w\-][\w\.\-]*)!; our $MID_RE = qr!([^/]+)!; our $END_RE = qr!(T/|t/|t\.mbox(?:\.gz)?|t\.atom|raw|)!; our $ATTACH_RE = qr!(\d[\.\d]*)-([[:alnum:]][\w\.-]+[[:alnum:]])!i; +our $OID_RE = qr![a-f0-9]{7,40}!; sub new { my ($class, $pi_config) = @_; @@ -117,7 +120,14 @@ sub call { r301($ctx, $1, $2); } elsif ($path_info =~ m!$INBOX_RE/_/text(?:/(.*))?\z!o) { get_text($ctx, $1, $2); - + } elsif ($path_info =~ m!$INBOX_RE/([\w\-\.]+)\.css\z!o) { + get_css($ctx, $1, $2); + } elsif ($path_info =~ m!$INBOX_RE/($OID_RE)/s/\z!o) { + get_vcs_object($ctx, $1, $2); + } elsif ($path_info =~ m!$INBOX_RE/($OID_RE)/s/([\w\.\-]+)\z!o) { + get_vcs_object($ctx, $1, $2, $3); + } elsif ($path_info =~ m!$INBOX_RE/($OID_RE)/s\z!o) { + r301($ctx, $1, $2, 's/'); # convenience redirects order matters } elsif ($path_info =~ m!$INBOX_RE/([^/]{2,})\z!o) { r301($ctx, $1, $2); @@ -129,6 +139,7 @@ sub call { # for CoW-friendliness, MOOOOO! sub preload { + my ($self) = @_; require PublicInbox::Feed; require PublicInbox::View; require PublicInbox::SearchThread; @@ -141,6 +152,9 @@ sub preload { PublicInbox::NewsWWW)) { eval "require $_;"; } + if (ref($self)) { + $self->stylesheets_prepare($_) for ('', '../', '../../'); + } } # private functions below @@ -259,6 +273,18 @@ sub get_text { PublicInbox::WwwText::get_text($ctx, $key); } +# show git objects (blobs and commits) +# /$INBOX/_/$OBJECT_ID/show +# /$INBOX/_/${OBJECT_ID}_${FILENAME} +# KEY may contain slashes +sub get_vcs_object ($$$;$) { + my ($ctx, $inbox, $oid, $filename) = @_; + my $r404 = invalid_inbox($ctx, $inbox); + return $r404 if $r404; + require PublicInbox::ViewVCS; + PublicInbox::ViewVCS::show($ctx, $oid, $filename); +} + sub ctx_get { my ($ctx, $key) = @_; my $val = $ctx->{$key}; @@ -446,4 +472,128 @@ sub get_attach { PublicInbox::WwwAttach::get_attach($ctx, $idx, $fn); } +# User-generated content (UGC) may have excessively long lines +# and screw up rendering on some browsers, so we use pre-wrap. +# +# We also force everything to the same scaled font-size because GUI +# browsers (tested both Firefox and surf (webkit)) uses a larger font +# for the Search <form> element than the rest of the page. Font size +# uniformity is important to people who rely on gigantic fonts. +# Finally, we use monospace to ensure the Search field and button +# has the same size and spacing as everything else which is +# <pre>-formatted anyways. +our $STYLE = 'pre{white-space:pre-wrap}*{font-size:100%;font-family:monospace}'; + +sub stylesheets_prepare ($$) { + my ($self, $upfx) = @_; + my $mini = eval { + require CSS::Minifier; + sub { CSS::Minifier::minify(input => $_[0]) }; + } || eval { + require CSS::Minifier::XS; + sub { CSS::Minifier::XS::minify($_[0]) }; + } || sub { $_[0] }; + + my $css_map = {}; + my $stylesheets = $self->{pi_config}->{css} || []; + my $links = []; + my $inline_ok = 1; + + foreach my $s (@$stylesheets) { + my $attr = {}; + local $_ = $s; + foreach my $k (qw(media title href)) { + if (s/\s*$k='([^']+)'// || s/\s*$k=(\S+)//) { + $attr->{$k} = $1; + } + } + + if (defined $attr->{href}) { + $inline_ok = 0; + } else { + open(my $fh, '<', $_) or do { + warn "failed to open $_: $!\n"; + next; + }; + my ($key) = (m!([^/]+?)(?:\.css)?\z!i); + my $ctime = 0; + my $local = do { local $/; <$fh> }; + if ($local =~ /\S/) { + $ctime = sprintf('%x',(stat($fh))[10]); + $local = $mini->($local); + } + $css_map->{$key} = $local; + $attr->{href} = "$upfx$key.css?$ctime"; + if (defined($attr->{title})) { + $inline_ok = 0; + } elsif (($attr->{media}||'screen') eq 'screen') { + $attr->{-inline} = $local; + } + } + push @$links, $attr; + } + + my $buf = "<style>$STYLE"; + if ($inline_ok) { + my @ext; # for media=print and whatnot + foreach my $attr (@$links) { + if (defined(my $str = delete $attr->{-inline})) { + $buf .= $str; + } else { + push @ext, $attr; + } + } + $links = \@ext; + } + $buf .= '</style>'; + + if (@$links) { + foreach my $attr (@$links) { + delete $attr->{-inline}; + $buf .= "<link\ntype=text/css\nrel=stylesheet"; + while (my ($k, $v) = each %$attr) { + $v = qq{"$v"} if $v =~ /[\s=]/; + $buf .= qq{\n$k=$v}; + } + $buf .= ' />'; + } + $self->{"-style-$upfx"} = $buf; + } else { + $self->{-style_inline} = $buf; + } + $self->{-css_map} = $css_map; +} + +# returns an HTML fragment with <style> or <link> tags in them +# Called by WwwStream by nearly every HTML page +sub style { + my ($self, $upfx) = @_; + $self->{-style_inline} || $self->{"-style-$upfx"} || do { + stylesheets_prepare($self, $upfx); + $self->{-style_inline} || $self->{"-style-$upfx"} + }; +} + +# /$INBOX/$KEY.css endpoint +# CSS is configured globally for all inboxes, but we access them on +# a per-inbox basis. This allows administrators to setup per-inbox +# static routes to intercept the request before it hits PSGI +sub get_css ($$$) { + my ($ctx, $inbox, $key) = @_; + my $r404 = invalid_inbox($ctx, $inbox); + return $r404 if $r404; + my $self = $ctx->{www}; + my $css_map = $self->{-css_map} || stylesheets_prepare($self, ''); + my $css = $css_map->{$key}; + if (!defined($css) && $key eq 'userContent') { + my $env = $ctx->{env}; + $css = PublicInbox::UserContent::sample($ctx->{-inbox}, $env); + } + defined $css or return r404(); + my $h = [ 'Content-Length', bytes::length($css), + 'Content-Type', 'text/css' ]; + PublicInbox::GitHTTPBackend::cache_one_year($h); + [ 200, $h, [ $css ] ]; +} + 1; |