--- /dev/null
+&*
+@*
+serverkey
--- /dev/null
+.PHONY: _subtrees
+
+_subtrees: _cgilite
+
+cgilite:
+ git subtree add --squash -P $@ https://git.plutz.net/git/$@ master
+
+_cgilite: cgilite
+ git subtree pull --squash -P $< https://git.plutz.net/git/$< master
--- /dev/null
+#!/bin/sh
+
+if [ -f "$chatfile" ]; then
+ read -r channelkey x <"$chatfile"
+ channelkey="$( printf '%s-%s' "$channelkey" "$SESSION_ID" |sha256sum)"
+fi
+
+case $(POST action) in
+ create)
+ if mkdir "${_DATA}/${LOCATION}"; then
+ { randomid; printf ' '; STRING "$nickname"; echo; } >"$chatfile"
+ fi
+ REDIRECT "$(URL "/$LOCATION")"
+ ;;
+ submit)
+ read lasttime x <<-EOFread
+ $(tail -n 50 "$chatfile" |grep -F " $(STRING "$nickname"): " |tail -n1)
+ EOFread
+ if [ "$lasttime" ]; then
+ lasttime="$(date -d "${lasttime%_*} ${lasttime#*_}" +%s)"
+ else
+ lasttime=0
+ fi
+ if [ -f "$chatfile" -a "$channelkey" = "$(POST channelkey)" -a "$(POST timenonce)" -ge "$lasttime" ]; then
+ printf "%s %s: %s\n" "$(date +%F_%T)" "$(STRING "$nickname")" "$(POST message |STRING)" >>"$chatfile"
+ fi
+ REDIRECT "$(URL "/$LOCATION")"
+ ;;
+esac
+
+nicklist(){
+ local nickfile="${chatfile%/channel}/nicks"
+ case $1 in
+ enter)
+ trap 'sed -i -E "/^${SESSION_KEY%%-*} $$ /d" "$nickfile"' INT QUIT
+ sed -i -E "/^${SESSION_KEY%%-*} /d" "$nickfile"
+ printf '%s %i %s\n' "${SESSION_KEY%%-*}" "$$" "$nickname" >>"$nickfile"
+ ;;
+ leave)
+ sed -i -E "/^${SESSION_KEY%%-*} $$ /d" "$nickfile"
+ ;;
+ esac
+
+ nicklist='NICKNAMES: '
+ while read -r s p nick; do
+ nicklist="${nicklist}/$nick/"
+ done <"$nickfile"
+ if ! tail -n20 "$chatfile" |grep -qxF "$nicklist"; then
+ printf '%s\n' "$nicklist" >>"$chatfile"
+ fi
+}
+
+if [ ! -f "$chatfile" ]; then
+ yield_page create <<-EOF
+ [form #nonexist method="POST"
+ There is no channel named $(HTML "$LOCATION")
+ [submit "action" "create" Create]
+ ]
+ EOF
+else
+ nicklist enter
+
+ printf '%s: %s\r\n' Refresh 1
+ { printf '
+ [form #channel method="POST"
+ [submit "action" "submit" style="display: none;"]
+ [hidden "session_key" "%s"][hidden "channelkey" "%s"][hidden "timenonce" "%s"]
+ [a .settings href="?settings#nick" Settings][input autocomplete="off" name="message" autofocus=true][submit "action" "submit" Send!]
+ ]
+ ' "$SESSION_KEY" "$channelkey" "$_DATE"
+ SHESCAPE='s;[]&<>#."[];\\&;g;'
+
+ while sleep 10; do printf '\n'; done &
+ printf '[div #chat'
+ tail --pid $$ -n50 -f "$chatfile" \
+ | sed -nuE '
+ /^[0-9-]{10}_[0-9:]{8}+ [^ ]+ [^ ]+$/{
+ h; s;^([^ ]+) ([^ ]+) ([^ ]+)$;\1;; s;.*_;;; s;.+;[p .message [span .date &];p;
+ g; s;^([^ ]+) ([^ ]+) ([^ ]+)$;a\2;; bESC; :A s;.;;; s;(.)(.+);[span .nick [span .indicator \1]\2];p;
+ g; s;^([^ ]+) ([^ ]+) ([^ ]+)$;b\3;; bESC; :B s;.;;; s;.+;[span .message &]];p;
+ b;
+ }
+ /^NICKNAMES: .*/{
+ s;^NICKNAMES: ;;; h; s;^.*$;[div .nicklist [h2 Nicknames];p; g;
+ :NICKLIST
+ h; s;^/([^/]+)/.*$;c\1;; bESC :C
+ s;^.([^?])(.*)$;[a .nick href="/~\1\2" \1\2];p;
+ s;^.(\?)(.*)$;[span .nick [span .indcator \1]\2];p;
+ g; s;/[^/]+/;;; /.+/bNICKLIST s;^.*$;];p;
+ b;
+ }
+ b; :ESC
+ '"$UNSTRING"' '"$SHESCAPE"'
+ /^a/bA; /^b/bB; /^c/bC;
+ '
+ } |yield_page channel
+
+ nicklist leave
+fi
--- /dev/null
+#!/bin/sh
+
+_EXEC="${_EXEC:-.}"
+_DATA="${_DATA:-.}"
+SESSION_TIMEOUT=43200
+. "$_EXEC/cgilite/logging.sh"
+. "$_EXEC/cgilite/cgilite.sh"
+. "$_EXEC/cgilite/session.sh"
+. "$_EXEC/cgilite/storage.sh"
+
+LOCATION="$(PATH "$PATH_INFO")"
+LOCATION="${LOCATION#/}"
+LOCATION="${LOCATION%%/*}"
+
+NICK_REGISTRATION="${NICK_REGISTRATION:-on}"
+
+# ToDo:
+# COOKIE_NICK_EXPIRE=$((86400 * 14))
+# REGEISTERED_NICK_EXPIRE=$((86400 * 365))
+
+yield_page(){
+ page="$1"
+ printf '%s\r\n' 'Content-Type: text/html; charset=utf-8' \
+ "Content-Security-Policy: script-src 'none'" \
+ ''
+ { printf '[html
+ [head
+ [meta name="viewport" content="width=device-width"]
+ [link rel="stylesheet" type="text/css" href="/webchat.css"]
+ [title Webchat]
+ ] [body class="%s"
+ ' "$page"
+ [ "$QUERY_STRING" = settings ] && settings_menu
+ cat
+ printf '] ]'
+ } |"$_EXEC/cgilite/html-sh.sed" -u
+}
+
+settings_menu(){
+ printf '
+ [form #settings method="POST" action="?settings"
+ [hidden "session_key" "%s"]
+ [h1 Settings][a .settings href="?" Close]
+ ' "$SESSION_KEY"
+ if [ "$ERROR" ]; then
+ printf '[p .error %s %s]' "${ERROR%% *}" "$(HTML "${ERROR#.* }")"
+ unset ERROR
+ fi
+ printf '
+ [a .section href="#nick" Nickname]
+ [div #nick [input name="nickname" placeholder="%s"][submit "action" "nick" Set Cookie]]
+ ' "$(HTML "${nickname#\?}")"
+ [ "$NICK_REGISTRATION" = on -a "$nickname" != '?Guest' ] && printf '
+ [a .section href="#register" Register Nickname]
+ [div #register
+ [p Registration will set a permanent Cookie in your Browser.
+ Registration requires neither a password, nor an email address.]
+ [input name="regnick" value="%s"][submit "action" "register" Register]
+ ]' "$(HTML "${nickname#\?}")"
+ printf ']'
+}
+
+. "$_EXEC/usernick.sh"
+
+case ${LOCATION} in
+ webchat.css)
+ . "$_EXEC/cgilite/file.sh"
+ FILE "$_EXEC/${LOCATION}"
+ return 0
+ ;;
+ \&?*)
+ [ "$(COOKIE nick)" -o "$QUERY_STRING" = settings ] || REDIRECT "/$LOCATION?settings#nick"
+ chatfile="$_DATA/${LOCATION}/channel"
+ . "$_EXEC/channel.sh"
+ exit 0
+ ;;
+ @?*)
+ if [ -d "$_DATA/${LOCATION}" ]; then
+ chatfile="$_DATA/${LOCATION}/?${SESSION_ID}"
+ . "$_EXEC/channel.sh"
+ else
+ REDIRECT /
+ fi
+ exit 0
+ ;;
+ ~?*)
+ if [ -d "$_DATA/@${LOCATION#~}" ]; then
+ pubinfo="$_DATA/@${LOCATION#~}/pubinfo"
+ else
+ # ToDo Edit / Display of public user information
+ REDIRECT /
+ fi
+ ;;
+ '') yield_page front <<-EOF
+ Front
+ EOF
+ ;;
+ *) REDIRECT /
+ ;;
+esac
--- /dev/null
+#!/bin/sh
+
+UNAME_VALID='
+ # Remove trailing CR, which may have been added by browser
+ s;\r$;;;
+ # Collapse white spaces
+ s;[\r\t\n ]+; ;g;
+ # Remove starting and trailing white spaces
+ s;^ ;;; s; $;;;
+ # Usernames starting with & # ? @ + will be invalid
+ /^[&#?@+]/d;
+ # Usernames containing a / will be invalid
+ /\//d;
+ # Usernames must be between 3 and 24 characters
+ /...+/!d; /.{25}/d;
+ # Usernames may not span multiple lines
+ q;'
+username(){
+ { [ $# -eq 0 ] && cat || printf %s "$*"; } \
+ | sed -E ':X; $!{N;bX;}'"$UNAME_VALID"
+}
+
+nickname="$(COOKIE nick |username)"
+if [ ! "$nickname" ]; then
+ nickname='?Guest'
+elif [ ! -d "$_DATA/@$nickname" ]; then
+ nickname="?$nickname"
+else
+ userclient="$(COOKIE user_client)"
+ secuid="$(cat "$_DATA/@$nickname/secuid")"
+ clientid="${userclient%%-*}"
+ clientid="${clientid}-$(printf '%s%s' "${clientid}" "${secuid}" |sha256sum)"
+ clientid="${clientid%% *}"
+ if [ "$clientid" = "$userclient" ]; then
+ nickname=" $nickname"
+ SET_COOKIE +"$((86400 * 365))" "user_client=${clientid}" HttpOnly
+ SET_COOKIE +"$((86400 * 365))" "nick=$(URL "${nickname}")"
+ else
+ export ERROR=".nick Your current nickname has been registered elsewhere."
+ QUERY_STRING=settings
+ nickname='?Guest'
+ fi
+fi
+
+case $(POST action) in
+ nick)
+ nick="$(POST nickname |username)"
+ if [ -d "$_DATA/@$nick" ]; then
+ export ERROR=".nick This nickname has already been registered elsewhere."
+ elif [ -z "$(POST nickname)" ]; then
+ SET_COOKIE +1209600 "nick=$(URL "${nickname#\?}")"
+ REDIRECT "$(URL "/$LOCATION")"
+ elif [ -z "$nick" ]; then
+ export ERROR='.nick Nicknames must be between 3 and 24 characters long. They may not start with "&", "#", "?", "@", or "+" and they must not contain a "/".'
+ else
+ SET_COOKIE +1209600 "nick=$(URL $nick)"
+ REDIRECT "$(URL "/$LOCATION")"
+ fi
+ ;;
+ register)
+ regnick="$(POST regnick |username)"
+ userdir="$_DATA/@${regnick}"
+ if [ "$NICK_REGISTRATION" != on ]; then
+ export ERROR='.register Nickname registration is disabled on this server.'
+ elif [ "$regnick" = Guest ]; then
+ export ERROR='.register The name "Guest" may not be registered as a permanent nickname.'
+ elif [ -z "$regnick" ]; then
+ export ERROR='.register Nicknames must be between 3 and 24 characters long. They may not start with "&", "#", "?", "@", or "+" and they must not contain a "/".'
+ elif [ -d "$userdir" ]; then
+ export ERROR=".register This nickname has already been registered elsewhere."
+ elif mkdir "$userdir"; then
+ secuid="$(randomid)"; clientid="$(randomid)"
+ printf %s\\n "$secuid" >"${userdir}/secuid"
+ clientid="${clientid}-$(printf '%s%s' "${clientid}" "${secuid}" |sha256sum |cut -d\ -f1)"
+ SET_COOKIE +"$((86400 * 365))" "user_client=${clientid}" HttpOnly
+ SET_COOKIE +"$((86400 * 365))" "nick=$(URL "${regnick}")"
+ REDIRECT "$(URL "/$LOCATION")"
+ else
+ export ERROR=".register Registration failed, possibly due to faulty server configuration."
+ fi
+ ;;
+esac
--- /dev/null
+* {
+ box-sizing: border-box;
+ font: normal normal normal medium/1.25 Sans-Serif;
+ font: normal normal normal normal medium/1.25 Sans-Serif;
+ text-decoration: none;
+ margin: 0; padding: 0;
+ border: none;
+ color: inherit;
+}
+
+b, strong { font-weight: bold; }
+i, em { font-style: italic; }
+
+input[type=text], input:not([type]) {
+ border: 1px solid #08b;
+ padding: .125ex .5ex;
+}
+button {
+ border: outset #DDD;
+ padding: .125ex 1ex;
+ background-color: #EEE;
+}
+
+#settings {
+ display: block;
+ position: fixed;
+ min-width: 20%; max-width: 90%;
+ width: 30em;
+ bottom: 12em;
+ left: 50%; transform: translate(-50%);
+ color: #000;
+ background-color: #FFF;
+ border: 1px solid;
+ border-radius: 1ex 1ex .5ex .5ex;
+ z-index: 2;
+}
+#settings h1 {
+ background-color: #08b;
+ margin: 0;
+ padding: 0 1ex;
+ font-size: 1em;
+ font-weight: bold;
+ border-bottom: 1px solid;
+ border-radius: 1ex 1ex 0 0;
+}
+#settings a.settings {
+ position: absolute;
+ top: 0; right: 1px;
+ background-color: #F88;
+ border-left: 1px solid;
+ border-radius: 0 1ex 0 0;
+ width: 3ex;
+ overflow: hidden;
+}
+#settings a.settings:before {
+ content: "x";
+ padding: 0 1ex;
+}
+#settings .error {
+ padding: 1ex 1ex .5ex 1ex;
+ background-color: #FCC;
+ font-weight: bold;
+}
+#settings a.section {
+ display: block;
+ font-weight: bold;
+ text-decoration: underline;
+ margin: -1px 1px 0 0; padding: .5ex 1ex;
+ border-top: 1px solid;
+ background-color: #EEE;
+}
+#settings a.section + * {
+ display: block;
+ padding: .5ex 1ex 0 1ex;
+ max-height: .5ex;
+ overflow: hidden;
+ transition: max-height .5s;
+}
+#settings .error.nick ~ a.section + #nick,
+#settings .error.register ~ a.section + #register,
+#settings a.section + #nick,
+#settings a.section + *:target {
+ max-height: 20ex;
+ padding: 1ex 1ex .5ex 1ex;
+}
+#settings input {margin-right: 1ex;}
+
+form#channel {
+ position: fixed;
+ bottom: 1ex;
+ left: .5ex; right: .5ex;
+}
+form#channel a.settings {
+ display: inline-block;
+}
+form#channel a.settings:before {
+ content: '\2699';
+ padding: 0 .75ex;
+ margin-left: .5ex;
+ margin-right: 2em;
+}
+form#channel input[name=message] {
+ display: inline-block;
+ position: absolute;
+ right: 0;
+ width: calc(100% - 4.5ex);
+}
+form#channel button[value=submit] { display: none; }
+
+#chat {
+ position: fixed;
+ bottom: 2em;
+ left: 0; right: 0;
+ padding: 1ex;
+ margin: .5ex;
+ -z-index: -1;
+}
+
+#chat p.message {
+ margin-top: .25em;
+}
+#chat p.message > * {
+ display: table-cell;
+ color: #000;
+ background-color: rgba(255, 255, 255, .5);
+ line-height: 1.5em;
+ padding: .125em 0 .125em .5em;
+}
+
+#chat .message .date {
+ color: #888;
+ font-size: .75em;
+}
+#chat .message .nick .indicator {
+ color: #888;
+}
+#chat .message .nick {
+ font-weight: bold;
+ white-space: nowrap;
+}
+#chat .message .message {
+ border-radius: 0 .5em .5em 0;
+ padding-right: .5em;
+}
+
+#chat div.nicklist {
+ position: fixed;
+ top: 1em; bottom: 3em;
+ right: 0; width: 1em;
+ background-color: rgba(255, 255, 255, .875);
+ padding: .5em;
+ z-index: 1;
+ border: 1px solid black;
+ border-width: 1px 0 1px 1px;
+ overflow-y: auto;
+ white-space: nowrap;
+}
+#chat div.nicklist:hover {
+ width: 20%;
+ min-width: 10em;
+ white-space: normal;
+}
+#chat div.nicklist h2 {
+ font-weight: bold;
+ border-bottom: 1px solid black;
+}
+#chat div.nicklist .nick {
+ margin-top: .5em;
+ display: block;
+ line-height: 1.5em;
+}
+#chat div.nicklist a.nick {
+ color: #00F;
+}