#!/usr/local/plan9/bin/rc . ./cgilib.rc cd .. forbidden_uri_chars='[^a-zA-Z0-9_+\-\/\.]' # Expected input: ls -F style, $sitedir/path/to/files/ # dirfilter='s/\*$//; s,/+\./+,/,g; s,^\./,,; /\/[._][^\/]/d; /'^$forbidden_uri_chars^'/d; /^\/(robots|sitemap)\.txt$|\/index\.(md|html|txt|tpl)$/d; /_werc\/?$/d; ' dirclean=' s/\.(md|html|txt)$//; ' # To be used from config files fn hide_paths { for(i in $*) dirfilter=$dirfilter^'/^'$i'$/d; ' } # Sidebar fn nav_tree { if(! ~ $#sideBarNavTitle 0) echo '

'$"sideBarNavTitle':

' # Ignore stderr, last path element might be a file that doesn't exist (eg., foo for foo.md) # /./ to deal with p9p's ls failure to follow dir symlinks otherwise ls -F $sitedir/./$req_paths_list >[2]/dev/null \ | sed 's!^'$sitedir'!!; '^$dirfilter^'/\/[^_.\/][^\/]*(\.(md|txt|html)|\/)$/!d; '^$dirclean \ | sort -u | awk -F/ ' function p(x, y, s) { for(i=0; i < x-y; i+=1) print s } { d = "" if(match($0, "/$")) d = "/" sub("/$", "") # Strip trailing / for dirs so NF is consistent p(NF, lNF, "") lNF = NF bname = $NF d path = $0 d gsub("_", " ", bname) if(index(ENVIRON["req_path"] "/", path) == 1) print "

» " bname "" else print "

› " bname "

" } END { p(lNF, 0, "") }' } # Handlers fn md_handler { $formatter < $1 } fn tpl_handler { template $* } fn html_handler { # body states: 0 = no found, 2 = after , 1 = after , -1 = after awk 'gsub(".*<[Bb][Oo][Dd][Yy][^>]*>", "") > 0 {body=2} gsub("]*>.*", "") > 0 {print; body=body-1} body==2 {print} body==0 {buf=buf "\n" $0} END {if(body<=0) {print buf}}' < $1 } fn txt_handler { # Note: Words are not broken, even if they are way beyond 82 chars long echo '

' `{ sed 's//\>/g' < $1 | fmt -l 82 -j } '

' } fn dir_listing_handler { d=`{basename -d $1} echo $d|sed 's,.*//,,g; s,/$,,; s,/, / ,g; s,.*,

&

' } fn setup_handlers { if(test -f $local_path.md) handler_body_main=(md_handler $local_path.md) if not if(test -f $local_path.tpl) handler_body_main=(tpl_handler $local_path.tpl) if not if(test -f $local_path.html) handler_body_main=(html_handler $local_path.html) # Global tpl (eg sitemap.tpl), should take precedence over txt handler! if not if(test -f lib^$req_path^.tpl) handler_body_main=(tpl_handler lib^$req_path^.tpl) if not if(test -f $local_path.txt) handler_body_main=(txt_handler $local_path.txt) # XXX Should check that $enabled_apps exist in $werc_apps? # XXX Should split init of apps that provide main handler (eg., blog) and apps that don't (eg., comments)? if(! ~ $#enabled_apps 0) for(a in $enabled_apps) $a^'_init' if(! ~ $#handler_body_main 0) { } # We are done # Dir listing if not if(~ $local_path */index) handler_body_main=(dir_listing_handler $req_path) # Canonize explicit .html urls, the web server might handle this first! if not if(~ $local_path *.html && test -f $local_path) perm_redirect `{ echo $req_path|sed 's/.html$//' } # Fallback static file handler if not if(test -f $local_path) static_file $local_path if not if(~ $req_path /pub/* && test -f .$req_path) static_file .$req_path # File not found if not { handler_body_main=(tpl_handler `{get_lib_file 404.tpl}) echo 'Status: 404 Not Found' dprint 'NOT FOUND: '$SERVER_NAME^$"REQUEST_URI^' - '^$"HTTP_REFERER^' - '^$"HTTP_USER_AGENT } } fn run_handlers { for(h in $*) run_handler $$h } fn run_handler { $*(1) $*(2-) } # Careful, the proper p9p path might not be set until initrc.local is sourced path=(. $PLAN9/bin ./bin/ /bin/ /usr/bin) headers=lib/headers.tpl res_tail='' ll_add handlers_bar_left nav_tree werc_apps=( apps/* ) werc_root=`{pwd} sitesdir=sites for(i in siteTitle siteSubTitle pageTitle extraHeaders) $i = '' # TODO: Per-req variables should move after initrc loading. site=$SERVER_NAME base_url=http://$site/ sitedir=$sitesdir/$site master_template=`{get_lib_file default_master.tpl} current_date_time=`{date} . ./etc/initrc if(test -f etc/initrc.local) . ./etc/initrc.local for(a in $werc_apps) . ./$a/app.rc # Parse request URL # NOTE: $REQUEST_URI is not officially in CGI 1.1, but seems to be de-facto req_path=`{echo -n $REQUEST_URI | sed 's/\?.*//; s/'^$forbidden_uri_chars^'//g; s/\.\.*/./g; 1q'} local_path=$sitedir$req_path ifs='/' { args=`{echo -n $req_path} } # Hack: preload post data so we can access it from templates where cgi's stdin is not accesible if(~ $REQUEST_METHOD POST) { load_post_args login_user } if(! ~ $#args 0) pageTitle=`{ echo $args|sed -e 's/ / - /g' -e 's/_/ /g' } if(~ $req_path */index) perm_redirect `{echo $req_path | sed 's,/index$,/,'} if(~ $local_path */) { if(test -d $local_path) local_path=$local_path^'index' if not # XXX: This redir might step on apps with synthetic dirs. perm_redirect `{echo $req_path|sed 's,/+$,,'} } if not if(test -d $local_path) perm_redirect $req_path^'/' cd $sitedir req_paths_list='/' # Note: req_paths_list doesn't include 'stnythetic' dirs. conf_wd='/' # Used in config files to know where we are in the document tree. if(test -f _werc/config) . _werc/config for(i in $args) { conf_wd=$conf_wd^$i req_paths_list=($req_paths_list $conf_wd) if(test -d $i) { conf_wd=$conf_wd^'/' cd $i if(test -f _werc/config) . _werc/config } } cd $werc_root # Redirections and other preprocessing if(~ $#redirectPermanent 1) { perm_redirect $"redirectPermanent } if not if(~ $#redirectPermanent 2) { from='http://'^$SERVER_NAME^$req_path to=`{echo $from|sed 's@'^$redirectPermanent(1)^'@'^$redirectPermanent(2)^'@'} if(! ~ $to $from) perm_redirect $to } # Set Page title if(~ $pageTitle '') pageTitle=$siteTitle^' '^$siteSubTitle if not pageTitle=$"pageTitle^' | '^$"siteTitle^' '^$"siteSubTitle setup_handlers if(! ~ $#debug 0) dprint ' '$"SERVER_NAME^$"REQUEST_URI' - '$"HTTP_USER_AGENT' - '$"REQUEST_METHOD' - '$"handler_body_main - $"master_template template $headers $master_template | awk_buffer echo $res_tail