307 lines
9 KiB
Bash
Executable file
307 lines
9 KiB
Bash
Executable file
#!/usr/local/plan9/bin/rc
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. ./cgilib.rc
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cd ..
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forbidden_uri_chars='[^a-zA-Z0-9_+\-\/\.]'
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response_format=html
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fn get_lib_file {
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if(test -f $sitedir/_werc/lib/$1)
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echo -n $sitedir/_werc/lib/$1
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if not if(! ~ $#masterSite 0 && test -f $sitesdir/$masterSite/_werc/lib/$1)
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echo -n $sitesdir/$masterSite/_werc/lib/$1
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if not if(test -f lib/$1)
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echo -n lib/$1
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}
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# Title
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fn gentitle {
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echo '<h1 class="headerTitle"><a href="/">' ^ $"siteTitle ^ ' <span id="headerSubTitle">' ^ $"siteSubTitle ^ '</span></a></h1>'
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}
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# Don't change var name or trailing ';', dirfilter might be changed from _werc/config!
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# TODO: Specify the canonical path input format handled by dirfilter
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dirfilter='s/\*$//; s,/+\./+,/,g; /\/[._]/d; /'^$forbidden_uri_chars^'/d; /^\/(robots|sitemap)\.txt$|\/index\.(md|html|txt|tpl)$/d; /_werc\/?$/d; s,^\./,,; s,\.(md|html|txt)$,,; '
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# To be used from config files
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fn hide_paths {
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for(i in $*)
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dirfilter=$dirfilter^'/^'$i'$/d; '
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}
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# Sidebar
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fn gensidebar {
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for(d in ./ $args) {
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dd=$"dd^'/'^$d
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dirs=( $sitedir^$dd $dirs )
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}
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# Ignore stderr, last item in path might be a file that doesn't exist (eg., foo for foo.md)
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ls -F $dirs >[2]/dev/null | sed 's,^'$sitedir',,; '^$dirfilter | sort -u | awk -F/ '
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function p(x, y, s) {
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for(i=0; i < x-y; i+=1)
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print s
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}
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# XXX Regexp to hide non-document/non-dir stuff, there must be a better way, if we really want this.
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/^\/([a-zA-Z0-9+_\-]+[*\/]?)+$/ {
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d = ""
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if(match($0, "/$"))
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d = "/"
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sub("/$", "") # Strip trailing / for dirs so NF is consistent
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p(NF, lNF, "<ul class=\"side-bar\">")
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p(lNF, NF, "</ul>")
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lNF = NF
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bname = $NF d
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path = $0 d
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gsub("_", " ", bname)
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if(index(ENVIRON["REQUEST_URI"] "/", path) == 1)
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print "<li><a href=\"" path "\" class=\"thisPage\">»<i> " bname "</i></a>"
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else
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print "<li><a href=\"" path "\">› " bname "</a></li>"
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}
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END { p(lNF, 0, "</ul>") }
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'
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}
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# Handlers
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fn set_handler {
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handler=$1
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handler_args=$*(2-)
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}
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fn md_handler { cat $* | $formatter }
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fn tpl_handler { template $1 }
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fn html_handler {
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# body states: 0 = no <body> found, 2 = after <body>, 1 = after <body></body>, -1 = after </body>
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awk 'gsub(".*<[Bb][Oo][Dd][Yy][^>]*>", "") > 0 {body=2}
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gsub("</ *[Bb][Oo][Dd][Yy][^>]*>.*", "") > 0 {print; body=body-1}
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body==2 {print}
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body==0 {buf=buf "\n" $0}
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END {if(body<=0) {print buf}}' < $1
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}
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fn txt_handler {
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echo '<pre>'
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# XXX Insering a blank line between lines in input is good for fortunes.txt, but maybe not for other .txt files
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# XXX Words are not broken, even if they are way beyond 82 chars long
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cat $1 | sed 's/$/\n/g; s/</\</g; s/>/\>/g' | fmt -l 82 -j
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echo '</pre>'
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}
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fn dir_listing_handler {
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d=`{basename -d $1}
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echo $d|sed 's,.*//,,g; s,/$,,; s,/, / ,g; s,.*,<h1 class="dir-list-head">&</h1> <ul class="dir-list">,'
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# Symlinks suck: '/.' forces ls to list the linked dir if $d is a symlink.
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ls -F $d/. | sed $dirfilter' s,.*/([^/]+/?)$,<li><a href="\1">\1</a></li>,'
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echo '</ul>'
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}
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fn 404_handler { template `{get_lib_file 404.tpl} }
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fn blog_dir_handler {
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blogDirs=$*
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tpl_handler lib/feeds/html.tpl
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}
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fn blog_post_handler {
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gen_blog_post_title $1 | $formatter
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$formatter < $1
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}
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fn select_handler {
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if(test -f $body.md) {
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if(! ~ $#inBlog 0)
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set_handler blog_post_handler $body.md
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if not
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set_handler md_handler $body.md
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if(! ~ $#allowComments 0 && ~ $REQUEST_METHOD POST) {
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get_post_args comment_text
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d=`{date -n} # FIXME Obvious race
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d=$body.md_werc/comments/$d/
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u=$logged_user
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if(~ $#logged_user 0) {
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get_post_args comment_user_name comment_user_password
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# TODO Should take this path too if the user can login but doesn't
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# belong to required group
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if(! login_user $comment_user_name $comment_user_password) {
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u=$comment_user_name ':' $comment_user_password
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d=$d^'_pending'
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}
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if not
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u = $logged_user
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}
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umask 002
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mkdir -m 775 -p $d
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echo $u > $d/user
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echo $comment_text > $d/body
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}
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}
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if not if(test -f $body.tpl)
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set_handler tpl_handler $body.tpl
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if not if(test -f $body.html)
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set_handler html_handler $body.html
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# Explicit .html urls, unfortunately usually the web server will handle this as static files
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if not if(~ $body *.html && test -f $body)
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perm_redirect `{ echo $REQUEST_URI|sed 's/.html$//' }
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# Rss feeds. TODO: we should check that the request is for a real blog dir
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if not if(~ $REQUEST_URI */index.rss */index.atom) {
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response_format=raw
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uri=`{echo $uri | sed 's/index.(rss|atom)$//'}
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if(~ $#blogDirs 0)
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blogDirs=$sitedir^'/'$uri
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uri=$baseuri$"uri
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if(~ $REQUEST_URI */index.rss)
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master_template=feeds/rss20.tpl
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if not if(~ $REQUEST_URI */index.atom)
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master_template=feeds/atom.tpl
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}
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# Blog handler
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if not if(~ $body */[bB]log/index */[bB]log//index || ! ~ $#blogDirs 0) {
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if(~ $#blogDirs 0)
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blogDirs=`{basename -d $body}
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u=`{cleanname $baseuri^`{basename -d '/'^$uri}|sed 's,:/,://,'} # Sed recovers '/' in 'http:/' stripped by cleanname
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extraHeaders=$"extraHeaders ^ \
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'<link rel="alternate" type="application/rss+xml" title="RSS" href="'$"u'/index.rss" />
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<link rel="alternate" type="application/atom+xml" title="ATOM" href="'$"u'/index.atom" />'
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set_handler tpl_handler lib/feeds/html.tpl
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}
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# Global tpl (eg sitemap.tpl)
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if not if(test -f lib/^$uri^.tpl)
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set_handler tpl_handler lib/^$uri^.tpl
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if not if(test -f $body.txt)
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set_handler txt_handler $body.txt
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# Dir listing
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if not if(~ $body */index)
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set_handler dir_listing_handler $body
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# Apps
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if not if(! ~ $#enabled_apps 0 && select_apps)
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set_handler app_handler
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# File not found
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if not {
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set_handler 404_handler $body
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dprint 'NOT FOUND: '$SERVER_NAME^$REQUEST_URI^' - '^$"HTTP_REFERER^' - '^$"HTTP_USER_AGENT
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echo 'Status: 404 Not Found'
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}
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}
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fn genbody { $handler $handler_args }
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# Careful, the proper p9p path might not be set until initrc.local is sourced
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path=(. $PLAN9/bin ./bin/ /bin/ /usr/bin)
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site=$SERVER_NAME
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headers=lib/headers.tpl
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master_template=default_master.tpl
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sidebar=sidebar
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baseuri=http://$site/
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current_date_time=`{date}
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for(i in siteTitle siteSubTitle pageTitle extraHeaders)
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$i = ''
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. ./etc/initrc
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if(test -f etc/initrc.local)
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. ./etc/initrc.local
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# Parse request URL
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uri=`{echo -n $REQUEST_URI | sed 's/\?.*//; s/'^$forbidden_uri_chars^'//g; s/\.\.*/./g; 1q'}
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ifs='/' { args=`{echo -n $uri} }
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# Hack: preload post data so we can access it from templates where cgi's stdin is not accesible
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if(~ $REQUEST_METHOD POST) {
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get_post_args
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login_user
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}
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if(! ~ $args '') {
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if(~ $args($#args) 'index')
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perm_redirect `{echo $REQUEST_URI | sed 's,/index$,/,'}
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pageTitle=`{echo $args | sed -e 's/ / - /g' -e 's/_/ /g'}
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req_path=$uri
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}
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if not {
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req_path='/'
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}
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fpath=$sitedir
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for(i in ('' $args)) {
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# TODO We can build a list of paths here that can be used in sidebar, instead of iterating args twice
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fpath=$fpath/$i
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# We don't want blog settings to cascade into posts, note that we are inBlog instead
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if(! ~ $#blogDirs 0 && ! ~ $req_path */index.rss */index.atom */[bB]log */[bB]log/) {
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inBlog = $blogDirs
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blogDirs = ()
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}
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if(test -f $fpath/_werc/config)
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. ./$fpath/_werc/config
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if(~ $#blogDirs 0 && ~ $#inBlog 0 && ~ $i [Bb]log)
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inBlog = 'yes'
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}
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# Redirections and other preprocessing
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if(~ $#redirectPermanent 1)
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perm_redirect $"redirectPermanent
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if not if(~ $#redirectPermanent 2 && {echo $SERVER_NAME^$REQUEST_URI|grep -s $redirectPermanent(1) }) {
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# Experimental regexp sub-based redirect, probably should find a nicer interface
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to=`{echo $SERVER_NAME^$REQUEST_URI|sed 's@'^$redirectPermanent(1)^'@'^$redirectPermanent(2)^'@'}
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if(! ~ $to $REQUEST_URI)
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perm_redirect $to
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}
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# Set Page title
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if(~ $pageTitle '')
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pageTitle=$siteTitle^' '^$siteSubTitle
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if not
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pageTitle=$"pageTitle^' | '^$"siteTitle^' '^$"siteSubTitle
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body=$sitedir/$req_path
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if(test -d $body) {
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if(! ~ $body */)
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perm_redirect $REQUEST_URI^'/'
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body=$body/index
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}
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select_handler
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if(! ~ $#debug 0)
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dprint ' '$"SERVER_NAME^$"REQUEST_URI' - '$"HTTP_USER_AGENT' - '$"REQUEST_METHOD' - '$"handler
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# Template/body selection
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master_template=`{get_lib_file $master_template}
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if(~ $response_format html) {
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# Is awk_buffer really useful?
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template $headers $master_template | awk_buffer
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echo '</body></html>'
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}
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if not if(~ $response_format raw)
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template < $master_template
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