--- /dev/null
+cgilite
+serverkey
+users.db
--- /dev/null
+#!/bin/sh
+
+# This is CGIlite.
+# A collection of posix shell functions for writing CGI scripts.
+
+# Copyright 2017 - 2023 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[ -n "$include_cgilite" ] && return 0
+# guard set after webserver part
+
+# ksh and zsh workaround
+# set -o posix # ksh, not portable
+setopt -o OCTAL_ZEROES 2>&-
+
+# Integrated webserver request timeout
+cgilite_timeout=2
+
+# General environment variables
+# $_EXEC - directory containing application itself
+# $_DATA - direcotry where application data may be stored
+# $_BASE - optional prefix for http path, e.g. "/myapp"
+#
+# Programmers should take care to use those variables throughout the
+# application.
+# Variables may be set via CLI argument, in environment, or left as default.
+
+for cgilite_arg in "$@"; do case $cgilite_arg in
+ --exec=*) _EXEC="${cgilite_arg#*=}";;
+ --data=*) _DATA="${cgilite_arg#*=}";;
+ --base=*) _BASE="${cgilite_arg#*=}";;
+esac; done
+unset cgilite_arg
+
+_EXEC="${_EXEC:-${0%/*}}"
+_DATA="${_DATA:-.}"
+_EXEC="${_EXEC%/}" _DATA="${_DATA%/}" _BASE="${_BASE%/}"
+
+export _EXEC _DATA _BASE
+
+# Carriage Return and Line Break characters for convenience
+CR="\r"
+BR='
+'
+
+PATH(){
+ local str seg out
+ # normalize path
+ # read from stdin if no arguments are provided
+
+ [ $# -eq 0 ] && str="$(cat)" || str="$*"
+ while [ "$str" ]; do
+ seg=${str%%/*}; str="${str#*/}"
+ case $seg in
+ ..) out="${out%/}"; out="${out%/*}/";;
+ .|'') out="${out%/}/";;
+ *) out="${out%/}/${seg}";;
+ esac;
+ [ "$seg" = "$str" ] && break
+ done
+ [ "${str}" -a "${out}" ] && printf %s "$out" || printf %s/ "${out%/}"
+}
+
+HEX_DECODE(){
+ local pfx="$1" in="$2" out
+ # Print out Data encoded as Hex
+ #
+ # Arguments:
+ # pfx - required, prefix for a hex tupel, e.g. "\x", "%" "\", may be empty
+ # in - required, string to be decoded
+ #
+ # anything that does not constitute a tupel of valid Hex numerals
+ # will be copied to the output literally
+
+ while [ "$in" ]; do
+ [ "$pfx" ] || case $in in
+ [0-9a-fA-F][0-9a-fA-F]*):;;
+ ?*) out="${out}${in%%"${in#?}"}"
+ in="${in#?}"; continue;;
+ esac
+
+ case $in in
+ "$pfx"[0-9a-fA-F][0-9a-fA-F]*) in="${in#"${pfx}"}";;
+ \\*) in="${in#?}"; out="${out}\\\\"; continue;;
+ %*) in="${in#?}"; out="${out}%%"; continue;;
+ *) att="${in%%"${pfx}"*}"; att="${att%%%*}"; att="${att%%\\*}"
+ out="${out}${att}"; in="${in#"${att}"}"; continue;;
+ esac;
+
+ # Hex escapes for printf (e.g. \x41) are not portable
+ # The portable way for Hex output is transforming Hex to Octal
+ # (e.g. \x41 = \101)
+ case $in in
+ [0123]?*) out="${out}\\0";;
+ [4567]?*) out="${out}\\1";;
+ [89aAbB]?*) out="${out}\\2";;
+ [c-fC-F]?*) out="${out}\\3";;
+ esac
+ case $in in
+ [048cC][0-7]*) out="${out}0";;
+ [048cC][89a-fA-F]*) out="${out}1";;
+ [159dD][0-7]*) out="${out}2";;
+ [159dD][89a-fA-F]*) out="${out}3";;
+ [26aAeE][0-7]*) out="${out}4";;
+ [26aAeE][89a-fA-F]*) out="${out}5";;
+ [37bBfF][0-7]*) out="${out}6";;
+ [37bBfF][89a-fA-F]*) out="${out}7";;
+ esac
+ case $in in
+ ?[08]*) out="${out}0";;
+ ?[19]*) out="${out}1";;
+ ?[2aA]*) out="${out}2";;
+ ?[3bB]*) out="${out}3";;
+ ?[4cC]*) out="${out}4";;
+ ?[5dD]*) out="${out}5";;
+ ?[6eE]*) out="${out}6";;
+ ?[7fF]*) out="${out}7";;
+ esac
+ in="${in#?}"
+ in="${in#?}"
+ done
+ printf -- "$out"
+}
+
+if [ -z "$REQUEST_METHOD" ]; then
+ # no webserver variables means we are running via inetd / ncat
+ # so use builtin web server
+
+ # Use env from inetd as webserver variables
+ REMOTE_ADDR="${TCPREMOTEIP}"
+ SERVER_NAME="${TCPLOCALIP}"
+ SERVER_PORT="${TCPLOCALPORT}"
+
+ # Wait 2 seconds for request or kill connection through watchdog.
+ # Once Request is received the watchdog will be suspended (killed).
+ # At the end of the loop the watchdog will be restarted to enable
+ # timeout for the subsequent request.
+
+ (sleep $cgilite_timeout && kill $$) & cgilite_watchdog=$!
+ while read REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL; do
+ unset PATH_INFO QUERY_STRING cgilite_headers CONTENT_LENGTH CONTENT_TYPE
+
+ [ "${SERVER_PROTOCOL#HTTP/1.[01]${CR}}" ] && break
+ kill $cgilite_watchdog
+
+ SERVER_PROTOCOL="${SERVER_PROTOCOL%${CR}}"
+ PATH_INFO="$(HEX_DECODE % "${REQUEST_URI%\?*}" |PATH)"
+ [ "${REQUEST_URI}" = "${REQUEST_URI#*\?}" ] \
+ && QUERY_STRING='' \
+ || QUERY_STRING="${REQUEST_URI#*\?}"
+ while read -r hl; do
+ hl="${hl%${CR}}"; [ "$hl" ] || break
+ case $hl in
+ 'Content-Length: '*) CONTENT_LENGTH="${hl#*: }";;
+ 'Content-Type: '*) CONTENT_TYPE="${hl#*: }";;
+ esac
+ cgilite_headers="${cgilite_headers}${hl}${BR}"
+ done
+
+ export REMOTE_ADDR SERVER_NAME SERVER_PORT REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL \
+ PATH_INFO QUERY_STRING CONTENT_TYPE CONTENT_LENGTH cgilite_headers
+
+ # Try to serve multiple requests, provided that script serves a
+ # Content-Length header.
+ # Without Content-Length header, connection will terminate after
+ # script.
+
+ cgilite_status='200 OK'; cgilite_response=''; cgilite_cl="Connection: close${CR}${BR}";
+ . "$0" | while read -r l; do case $l in
+ Status:*)
+ cgilite_status="${l#Status: }";;
+ Content-Length:*)
+ cgilite_cl=""
+ cgilite_response="${cgilite_response:+${cgilite_response}${BR}}${l}";;
+ Connection:*)
+ cgilite_cl="${l}${BR}";;
+ $CR) printf '%s %s\r\n%s%s\r\n' \
+ 'HTTP/1.1' "${cgilite_status%${CR}}" \
+ "${cgilite_response}${cgilite_response:+${BR}}" "${cgilite_cl}"
+ cat || kill $$
+ [ "${cgilite_cl#Connection}" = "${cgilite_cl}" ]; exit;;
+ *) cgilite_response="${cgilite_response:+${cgilite_response}${BR}}${l}";;
+ esac; done || exit 0;
+ (sleep $cgilite_timeout && kill $$) & cgilite_watchdog=$!
+ done
+ kill $cgilite_watchdog
+ exit 0
+fi
+
+include_cgilite="$0"
+
+if [ "${REQUEST_METHOD}" = POST -a "${CONTENT_LENGTH:-0}" -gt 0 -a \
+ "${CONTENT_TYPE}" = "application/x-www-form-urlencoded" ]; then
+ cgilite_post="$(head -c "$CONTENT_LENGTH")"
+fi
+
+PATH_INFO="$(PATH "/${PATH_INFO#${_BASE}}")"
+
+debug(){ [ $# -gt 0 ] && printf '%s\n' "$@" >&2 || tee -a /dev/stderr; }
+[ "${DEBUG+x}" ] && env >&2
+
+# general helper functions, see GET, POST, and REF below
+
+cgilite_count(){
+ printf %s "&$1" \
+ | grep -oE '&'"$2"'=[^&]*' \
+ | wc -l
+}
+
+cgilite_value(){
+ local str="&$1" name="$2" cnt="${3:-1}"
+ while [ $cnt -gt 0 ]; do
+ [ "${str}" = "${str#*&${name}=}" ] && return 1
+ str="${str#*&${name}=}"
+ cnt=$((cnt - 1))
+ done
+ HEX_DECODE % "$(printf %s "${str%%&*}" |tr + \ )"
+}
+
+cgilite_keys(){
+ local str="&$1"
+ while [ "${str#*&}" != "${str}" ]; do
+ str="${str#*&}"
+ printf '%s\n' "${str%%=*}"
+ done \
+ | sort -u
+}
+
+# Read arguments from GET, POST, or the query string of the referrer (REF).
+# Example:
+# GET varname n
+#
+# where n is number for the Nth occurence of a variable and defaults to 1
+#
+# *_COUNT varname
+# -> returns number of ocurences
+# *_KEYS
+# -> returns list of available varnames
+
+GET(){ cgilite_value "${QUERY_STRING}" "$@"; }
+GET_COUNT(){ cgilite_count "${QUERY_STRING}" $1; }
+GET_KEYS(){ cgilite_keys "${QUERY_STRING}"; }
+
+POST(){ cgilite_value "${cgilite_post}" "$@"; }
+POST_COUNT(){ cgilite_count "${cgilite_post}" $1; }
+POST_KEYS(){ cgilite_keys "${cgilite_post}"; }
+
+REF(){ cgilite_value "${HTTP_REFERER#*\?}" "$@"; }
+REF_COUNT(){ cgilite_count "${HTTP_REFERER#*\?}" $1; }
+REF_KEYS(){ cgilite_keys "${HTTP_REFERER#*\?}"; }
+
+HEADER(){
+ # Read value of header line. Use this instead of
+ # referencing HTTP_* environment variables.
+ if [ -n "${cgilite_headers+x}" ]; then
+ local str="${BR}${cgilite_headers}"
+ [ "${str}" = "${str#*${BR}${1}: }" ] && return 1
+ str="${str#*${BR}${1}: }"
+ printf %s "${str%%${BR}*}"
+ else
+ local var="HTTP_$(printf %s "$1" |tr a-z- A-Z_)"
+ eval "[ \"\$$var\" ] && printf %s \"\$$var\" || return 1"
+ # eval "printf %s \"\$HTTP_$(printf %s "${1}" |tr a-z A-Z |tr -c A-Z _)\""
+ fi
+}
+
+COOKIE(){
+ # Read value of cookie
+ HEX_DECODE % "$(
+ HEADER Cookie \
+ | grep -oE '(^|; ?)'"$1"'=[^;]*' \
+ | sed -En "${2:-1}"'{s;^[^=]+=;;; s;\+; ;g; p;}'
+ )"
+}
+
+HTML(){
+ # Escape HTML cahracters
+ # Also escape [, ], and \n for use in html-sh
+ local str out
+ [ $# -eq 0 ] && str="$(cat)" || str="$*"
+ while [ "$str" ]; do case $str in
+ \&*) out="${out}&"; str="${str#?}";;
+ \<*) out="${out}<"; str="${str#?}";;
+ \>*) out="${out}>"; str="${str#?}";;
+ \"*) out="${out}""; str="${str#?}";;
+ \'*) out="${out}'"; str="${str#?}";;
+ \[*) out="${out}["; str="${str#?}";;
+ \]*) out="${out}]"; str="${str#?}";;
+ "${CR}"*) out="${out}
"; str="${str#?}";;
+ "${BR}"*) out="${out}
"; str="${str#?}";;
+ *) out="${out}${str%%[]&<>\"\'${CR}${BR}[]*}"; str="${str#"${str%%[]&<>\"\'${CR}${BR}[]*}"}";;
+ esac; done
+ printf %s "$out"
+}
+
+URL(){
+ # Escape pathes, so they can be used in link tags and HTTP Headers
+ local str out
+ [ $# -eq 0 ] && str="$(cat)" || str="$*"
+ while [ "$str" ]; do case $str in
+ \&*) out="${out}%26"; str="${str#?}";;
+ \"*) out="${out}%22"; str="${str#?}";;
+ \'*) out="${out}%27"; str="${str#?}";;
+ \`*) out="${out}%60"; str="${str#?}";;
+ \?*) out="${out}%3F"; str="${str#?}";;
+ \#*) out="${out}%23"; str="${str#?}";;
+ \[*) out="${out}%5B"; str="${str#?}";;
+ \]*) out="${out}%5D"; str="${str#?}";;
+ \ *) out="${out}%20"; str="${str#?}";;
+ " "*) out="${out}%09"; str="${str#?}";;
+ "${CR}"*) out="${out}%0D"; str="${str#?}";;
+ "${BR}"*) out="${out}%0A"; str="${str#?}";;
+ %*) out="${out}%25"; str="${str#?}";;
+ *) out="${out}${str%%[]&\"\'\?# ${CR}${BR}%[]*}"; str="${str#"${str%%[]&\"\'\?# ${CR}${BR}%[]*}"}";;
+ esac; done
+ printf %s "$out"
+}
+
+SET_COOKIE(){
+ # Param: session | +seconds | [date]
+ # Param: name=value
+ # Param: Path= | Domain= | Secure
+ local expire cookie
+ case "$1" in
+ ''|0|session) expire='';;
+ [+-][0-9]*) expire="$(date -R -d @$(($(date +%s) + $1)))";;
+ *) expire="$(date -R -d "$1")";;
+ esac
+ cookie="$2"
+
+ printf 'Set-Cookie: %s; HttpOnly; SameSite=Lax' "$cookie"
+ [ -n "$expire" ] && printf '; Expires=%s' "${expire%+????}${expire:+GMT}"
+ [ $# -ge 3 ] && shift 2 && printf '; %s' "$@"
+ printf '\r\n'
+}
+
+REDIRECT(){
+ # Trigger redirct and terminate script
+ printf '%s: %s\r\n' \
+ Status "303 See Other" \
+ Content-Length 0 \
+ Location "$*"
+ printf '\r\n'
+ exit 0
+}
--- /dev/null
+/* ======= GENERIC HTML STYLES ======= */
+
+* {
+ box-sizing: border-box;
+ position: relative;
+ font: inherit;
+ text-decoration: inherit;
+ color: inherit; background: transparent;
+ max-width: 100%;
+ margin: 0; padding: 0;
+ border: none;
+}
+
+body {
+ font: normal normal normal medium/1.5em sans-serif;
+ color: #000; background: #FFF;
+}
+
+ul, ol, dl, table, pre, p { margin-bottom: .5em; }
+p:only-child { margin-bottom: 0; }
+
+table {
+ max-width: 100%;
+ overflow-x: auto;
+}
+th, td { padding: .25em .75em; }
+
+a {
+ font-style: italic;
+ text-decoration: underline;
+ color: #068;
+ word-break: break-word;
+}
+a.button {
+ font-style: inherit;
+ text-decoration: inherit;
+ color: inherit;
+}
+
+sup { vertical-align: super; }
+sub { vertical-align: sub; }
+small { font-size: .75em; }
+big { font-size: 1.25em; }
+strike, del, s { text-decoration: line-through; }
+u {text-decoration: underline; }
+i, em { font-style: italic; }
+b, strong { font-weight: bolder; }
+tt, code, var, samp, kbd { font-family: monospace; }
+kbd { font-style: italic; }
+
+blockquote {
+ background-color: #EEE;
+ margin: .5em 0;
+ padding: 1em 2em;
+ white-space: pre-line;
+}
+
+ul, ol { padding-left: 1.5em; }
+dl dt { font-weight: bolder; }
+dl dd {
+ margin: 0 2em;
+ background-color: #EEE;
+}
+table th { font-weight: bold; }
+
+li p + ul, li p + ol {
+ margin-top: -.25em;
+}
+
+hr { border-bottom: 1pt solid; }
+
+h1, h2, h3 {
+ font-weight: bold;
+ margin-top: .75em;
+ margin-bottom: .5em;
+}
+
+h4, h5, h6, form legend {
+ font-weight: bolder;
+ margin-bottom: .25em;
+}
+
+h1 {
+ text-align: center;
+ font-size: 1.5em;
+}
+h2 { font-size: 1.125em; }
+
+select, input, button, textarea, a.button {
+ display: inline-block;
+ color: #000; background-color: #FFF;
+ border: .5pt solid;
+ padding: .25em .75em;
+ vertical-align: text-bottom;
+ border: .5pt solid #000;
+ border-radius: 2pt;
+}
+select { padding: .375em 0; }
+textarea { min-height: 7em; }
+
+input[type=radio], input[type=checkbox] {
+ vertical-align: baseline;
+}
+input[type=number] { text-align: right; padding-right: 0; }
+
+button, input[type=button], a.button {
+ box-shadow: .125em .125em .25em;
+ cursor: pointer;
+}
+input[type=radio], input[type=checkbox], label[for] {
+ cursor: pointer;
+}
+
+label { margin-right: .75em; }
+input + label {
+ margin-left: .375em;
+}
+
+input[type="search"] + button.search,
+input.search + button.search {
+ width: 2.5em;
+ color: transparent;
+ background-color: #CCC;
+ margin-left: -2pt;
+ border-left: none;
+ border-radius: 0 2pt 2pt 0;
+ white-space: nowrap;
+ overflow: hidden;
+}
+input[type="search"] + button.search:before,
+input.search + button.search:before {
+ content: '\1f50d';
+ color: #000;
+ font-weight: bold;
+}
+
+@media print {
+ @page { margin: 20mm; }
+
+ h1, h2, h3, h4, h5, h6, form legend {
+ page-break-inside: avoid;
+ page-break-after: avoid;
+ page-break-before: auto;
+ }
+ li { page-break-inside: avoid; }
+ th, dt { page-break-after: avoid; }
+}
+
+/* ======= End Generic Styles ======= */
+
+/* ======= Common Styles ======= */
+
+*[tooltip]:hover:after {
+ display: block;
+ position: absolute;
+ min-width: 12em;
+ bottom: 100%; left: 50%; transform: translate(-50%, 0);
+ content: attr(tooltip);
+ padding: .5em;
+ color: #000; background-color: #FFC;
+ border: .5pt solid;
+ z-index: 1;
+}
+
+input[type=radio].tab { display: none; }
+input[type=radio].tab + label {
+ display: table-cell;
+ padding: .5em 1em;
+ color: #000; background-color: #EEE;
+ border: .5pt solid;
+}
+input[type=radio].tab:checked + label {
+ background-color: #FFF;
+ border-bottom: none;
+ box-shadow: .125em -.125em .125em #888;
+ z-index: 1;
+}
+input[type=radio].tab ~ *.tab {
+ display: none;
+ width: 100%;
+ margin-top: -.5pt; padding: .25em .75em;
+ border: .5pt solid;
+ border-radius: 0;
+ box-shadow: .125em .125em .125em #888;
+}
+
+/* Markdown line-block */
+.line-block { white-space: pre-wrap; }
+.line-block br { display: none; }
+
+/* ======= End Common Styles ======= */
--- /dev/null
+#!/bin/sh
+
+# Copyright 2023, 2024 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[ -n "$include_db23" ] && return 0
+include_db23="$0"
+
+. "${_EXEC:-.}/cgilite/storage.sh"
+
+DB2() {
+ local call data file key val seq
+ data="${BR}${1}${BR}" call="$2"
+ shift 2
+
+ case $call in
+ new|discard)
+ printf ''
+ ;;
+ open|load) file="$1"
+ cat "$file" || return 1
+ ;;
+ check|contains) key="$(STRING "$1")" val=''
+ val="${data##*"${BR}${key}" }" val="${val%%"${BR}"*}"
+ [ "$val" = '' ] && return 1
+ ;;
+ count) key="$(STRING "$1")" val='' seq=0
+ val="${data##*"${BR}${key}" }" val="${val%%"${BR}"*}"
+ [ "$val" = '' ] || val="${val} "
+ while [ "$val" != '' ]; do
+ seq=$((seq + 1)) val="${val#* }"
+ done
+ printf "%i\n" "$seq"
+ [ $seq = 0 ] && return 1
+ ;;
+ get) key="$(STRING "$1")" seq="${2:-1}"
+ val="${data##*"${BR}${key}" }" val="${val%%"${BR}"*}"
+ [ "$val" = '' ] && return 1 || val="${val} "
+ while [ $seq -gt 1 ]; do
+ seq=$((seq - 1)) val="${val#* }"
+ done
+ [ "$val" = '' ] && return 1
+ UNSTRING "${val%% *}"
+ ;;
+ iterate|raw) key="$(STRING "$1")"
+ val="${data##*"${BR}${key}" }" val="${val%%"${BR}"*}"
+ [ "$val" = '' ] && return 1
+ printf '%s\n' $val
+ ;;
+ delete|remove) key="$(STRING "$1")"
+ val="${data#*"${BR}${key}" *"${BR}"}"
+ key="${data%"${BR}${key}" *"${BR}"*}"
+ [ "${key}${BR}${val}" = "${data}" ] && return 1
+ printf '%s' "${key#"${BR}"}${BR}${val%"${BR}"}"
+ ;;
+ set|store) key="$(STRING "$1")" val=""
+ shift 1
+ val="$(for v in "$@"; do STRING "$v"; printf \\t; done)"
+ if [ "${data#*"${BR}${key}" *}" != "$data" ]; then
+ data="${data%"${BR}${key}" *"${BR}"*}${BR}${key} ${val% }${BR}${data#*"${BR}${key}" *"${BR}"}"
+ data="${data#"${BR}"}" data="${data%"${BR}"}"
+ else
+ data="${data#"${BR}"}${key} ${val% }${BR}"
+ data="${data#"${BR}"}"
+ fi
+ printf %s\\n "${data}"
+ ;;
+ append) key="$(STRING "$1")" val=""
+ val="${data##*"${BR}${key}" }" val="${val%%"${BR}"*}"
+ if [ "$val" = '' ]; then
+ printf %s\\n "${data}"
+ return 1
+ else
+ shift 1
+ val="${val}$(for v in "$@"; do printf \\t; STRING "$v"; done)"
+ data="${data%"${BR}${key}" *"${BR}"*}${BR}${key} ${val% }${BR}${data#*"${BR}${key}" *"${BR}"}"
+ data="${data#"${BR}"}" data="${data%"${BR}"}"
+ printf %s\\n "${data}"
+ fi
+ ;;
+ flush|save|write) file="$1"
+ data="${data#"${BR}"}" data="${data%"${BR}"}"
+ printf '%s\n' "$data" >"$file" || return 1
+ ;;
+ esac
+ return 0
+}
+
+DB3() {
+ # wrapper function that allows easyer use of DB2
+ # by always keeping file data in $db3_data
+
+ case "$1" in
+ new|discard|open|load|delete|remove|set|store|append)
+ db3_data="$(DB2 "$db3_data" "$@")"
+ return "$?"
+ ;;
+ get|count|check|contains|iterate|raw|flush|save|write)
+ DB2 "$db3_data" "$@"
+ return "$?"
+ ;;
+ esac
+}
--- /dev/null
+#!/bin/sh
+
+# Copyright 2016 - 2024 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[ -n "$include_fileserve" ] && return 0
+include_fileserve="$0"
+
+file_type(){
+ case ${1##*.} in
+ css) printf 'text/css';;
+ gif) printf 'image/gif';;
+ html|html) printf 'text/html';;
+ jpg|jpeg) printf 'image/jpeg';;
+ js) printf 'text/javascript';;
+ m3u8) printf 'application/x-mpegURL';;
+ m4a) printf 'audio/mp4';;
+ m4s) printf 'video/iso.segment';;
+ m4v|mp4) printf 'video/mp4';;
+ mpd) printf 'application/dash+xml';;
+ ogg) printf 'audio/ogg';;
+ pdf) printf 'application/pdf';;
+ png) printf 'image/png';;
+ sh) printf 'text/x-shellscript';;
+ svg) printf 'image/svg+xml';;
+ tex) printf 'text/x-tex';;
+ txt) printf 'text/plain';;
+ short) printf 'text/prs.shorthand';;
+ ts) printf 'video/MP2T';;
+ webm) printf 'video/webm';;
+ xml) printf 'application/xml';;
+ *) printf 'application/octet-stream';;
+ esac
+}
+
+FILE(){
+ local file="$1" mime="$2"
+ local file_size file_date http_date cachedate range
+
+ if ! [ -f "$file" ]; then
+ printf 'Content-Length: 0\r\nStatus: 404 Not Found\r\n\r\n'
+ return 0
+ elif ! [ -r "$file" ]; then
+ printf 'Content-Length: 0\r\nStatus: 403 Forbidden\r\n\r\n'
+ return 0
+ fi
+
+ read file_size file_date <<-EOF
+ $(stat -Lc "%s %Y" "$file")
+ EOF
+ http_date="$(date -ud "@$file_date" +"%a, %d %b %Y %T GMT")"
+
+ [ ! "$HTTP_IF_MODIFIED_SINCE" -a "$cgilite_headers" ] \
+ && HTTP_IF_MODIFIED_SINCE="$(HEADER If-Modified-Since)"
+ [ ! "$HTTP_RANGE" -a "$cgilite_headers" ] \
+ && HTTP_RANGE="$(HEADER Range)"
+
+ cachedate="$(
+ # Parse the allowable date formats from Section 3.3.1 of
+ # https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html
+ # HEADER If-Modified-Since \
+ printf %s "$HTTP_IF_MODIFIED_SINCE" \
+ | sed -E 's;^[^ ]+, ([0-9]{2}) (...) ([0-9]{4}) (..:..:..) GMT$;\3-\2-\1 \4;;
+ s;^[^ ]+, ([0-9]{2})-(...)-([789][0-9]) (..:..:..) GMT$;19\3-\2-\1 \4;;
+ s;^[^ ]+, ([0-9]{2})-(...)-([0-6][0-9]) (..:..:..) GMT$;20\3-\2-\1 \4;;
+ s;^[^ ]+ (...) ([0-9]{2}) (..:..:..) ([0-9]{4})$;\4-\1-\2 \3;;
+ s;^[^ ]+ (...) ([0-9]) (..:..:..) ([0-9]{4})$;\4-\1-\2 \3;;
+ s;Jan;01;; s;Feb;02;; s;Mar;03;; s;Apr;04;; s;May;05;; s;Jun;06;;
+ s;Jul;07;; s;Aug;08;; s;Sep;09;; s;Oct;10;; s;Nov;11;; s;Dec;12;;' \
+ | xargs -r0 date +%s -ud 2>&-
+ )"
+
+ range="${HTTP_RANGE#bytes=}"
+ case "$range" in
+ *[!0-9]*-*|*-*[!0-9]*)
+ range=""
+ ;;
+ *-)
+ range="${range}$((file_size - 1))"
+ ;;
+ -*)
+ [ ${range#-} -le $file_size ] \
+ && range="$((file_size - ${range#-}))-$((file_size - 1))" \
+ || range="0-$((file_size - 1))"
+ ;;
+ *-*)
+ [ ${range#*-} -ge $file_size ] \
+ && range="${range%-*}-$((file_size - 1))"
+ ;;
+ *) range=""
+ ;;
+ esac
+
+ if [ "$file_date" -lt "$cachedate" ] 2>&-; then
+ printf '%s: %s\r\n' \
+ Status '304 Not Modified' \
+ Content-Length 0 \
+ Last-Modified "$http_date"
+ printf '\r\n'
+
+ elif [ -z "$range" ]; then
+ printf '%s: %s\r\n' \
+ Status "200 OK" \
+ Accept-Ranges bytes \
+ Last-Modified "$http_date" \
+ Content-Type "${mime:-$(file_type "$file")}" \
+ Content-Length $file_size
+ printf '\r\n'
+
+ [ "$REQUEST_METHOD" != HEAD ] && cat "$file"
+
+ elif [ "${range%-*}" -le "${range#*-}" ]; then
+ printf '%s: %s\r\n' \
+ Status "206 Partial Content" \
+ Accept-Ranges bytes \
+ Last-Modified "$http_date" \
+ Content-Type "${mime:-$(file_type "$file")}" \
+ Content-Range "bytes ${range}/${file_size}" \
+ Content-Length "$((${range#*-} - ${range%-*} + 1))"
+ printf '\r\n'
+
+ [ "$REQUEST_METHOD" != HEAD ] \
+ && tail -c+$((${range%-*} + 1)) "$file" \
+ | head -c "$((${range#*-} - ${range%-*} + 1))"
+
+ elif [ "${range%-*}" -gt "${range#*-}" ]; then
+ printf '%s: %s\r\n' \
+ Status "216 Range Not Satisfiable" \
+ Content-Length 0 \
+ Content-Range \*/${file_size}
+ printf '\r\n'
+ fi
+}
--- /dev/null
+#!/bin/sed -nEf
+
+# Copyright 2018 - 2019 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+:Escapes
+s,\\\\,\\,g; s,\\&,\&,g;
+s,\\<,\<,g; s,\\>,\>,g;
+s,\\",\",g; s,\\',\',g;
+s,\\\[,\[,g; s,\\\],\],g;
+s,\\\.,\.,g; s,\\#,\#,g;
+s,\\,,g;
+
+:CommentHandle
+x; /^<\/!-->/{
+ x; /--]/{
+ H; s;^(.*)--].*$;\1-->;p;
+ g; s;^.*--]([^\n]*)$;\1;
+ x; s;^</!-->\n(.*)\n[^\n]*$;\1;; x;
+ bCommentEnd
+ }
+ p; b;
+}
+x;
+:CommentEnd
+
+:shortcuts
+s;\[hidden[ \t]+"([^"]*)"[ \t]+"([^"]*)";[input type="hidden" name="\1" value="\2";g;
+s;\[checkbox[ \t]+"([^"]*)"[ \t]+"([^"]*)";[input type="checkbox" name="\1" value="\2";g;
+s;\[radio[ \t]+"([^"]*)"[ \t]+"([^"]*)";[input type="radio" name="\1" value="\2";g;
+s;\[submit[ \t]+"([^"]*)"[ \t]+"([^"]*)";[button type="submit" name="\1" value="\2";g;
+s;\[a[ \t]+"([^"]*)";[a href="\1";g;
+s;\[img[ \t]+"([^"]*)"[ \t]+"([^"]*)";[img src="\1" alt="\2";g;
+
+s;\[!([^]\[]*)\];<!\1>;g;
+s;\[!--([^]\[]*)--\];<!--\1-->;g;
+
+:tags
+s;\[([^]\[< \t]+)([^]\[]*)\];<\1>\2</\1>;g;
+t tags;
+
+G;
+:tagclose
+s;^([^]\n]*)\]([^\n]*)\n([^\n]+);\1\3\2;
+t tagclose;
+h; s;^([^\n]*)\n;;; x; s;\n.*$;;;
+
+:tagopen
+s;^([^\[\n]*)\[([^]\[< \t\n]+)([^\n]*);\1<\2>\3\n</\2>;
+t tagopen;
+G; h; s;^[^\n]*\n+;;; x; s;\n.*$;;;
+
+:attribs
+s;class="([^>]+)>[ \t]*\.([^< \t]+);class="\2 \1>;g; t attribs;
+s;(<[^/][^>]*)>[ \t]*\.([^< \t]+);\1 class="\2">;g;
+s;(<[^/][^>]*)>[ \t]*#([^< \t]+);\1 id="\2">;g;
+s;(<[^/][^>]*)>[ \t]*([^ \t=<]+=("[^"]*"|'[^']*'|[^< \t]*));\1 \2>;g;
+t attribs;
+s;(<input ([^>]+ )?type=(radio|"radio"|'radio')( [^>]+)?)>[ \t]*(checked|selected);\1 checked="checked">;g;
+s;(<input ([^>]+ )?type=(checkbox|"checkbox"|'checkbox')( [^>]+)?)>[ \t]*(checked|selected);\1 checked="checked">;g;
+s;(<option( [^>]+)?)>[ \t]*(checked|selected);\1 selected="selected">;g;
+s;(<select( [^>]+)?)>[ \t]*multiple;\1 multiple="multiple">;g;
+t attribs;
+s;(<[^/][^>]*>)[ \t]*\.[ \t];\1;g;
+
+s;(<[^/][^>]*>)[ \t]*;\1;g;
+# s;(<[^/][^>]*)>[ \t]*</[^>]+>;\1/>;g;
+s;(<(br|hr|img|input|link|meta|area|base|col|command|embed|keygen|param|source|track|wbr)[^>]*)>[ \t]*</\1>;\1>;g;
+
+s;<!-->;<!--;;
+
+p; ${g; s;\n+;;g; p;}
--- /dev/null
+#!/bin/sh
+
+[ -n "$include_json" ] && return 0
+include_json="$0"
+
+. "${_EXEC:-.}/cgilite/db23.sh"
+
+# debug(){ [ $# -gt 0 ] && printf '%s\n' "$@" >&2 || tee -a /dev/stderr; }
+
+json_except() {
+ printf '%s\n' "$@" >&2;
+ printf 'Exc: %s\n' "$json_document" >&2
+}
+
+json_space() {
+ while true; do case "$json_document" in
+ [" ${BR}${CR} "]*) json_document="${json_document#?}";;
+ *) break ;;
+ esac; done
+}
+
+json_string() {
+ local string json_document="$json_document" end=0
+
+ json_space
+ case $json_document in
+ \"*) json_document="${json_document#?}"
+ ;;
+ *) json_except "Expected string specifyer starting with (\")"
+ return 1
+ ;;
+ esac
+ while [ "$json_document" ]; do case $json_document in
+ \\?*)
+ string="${string}${json_document%"${json_document#??}"}"
+ json_document="${json_document#??}"
+ ;;
+ \"*)
+ json_document="${json_document#?}"
+ end=1
+ break
+ ;;
+ *)
+ string="${string}${json_document%"${json_document#?}"}"
+ json_document="${json_document#?}"
+ ;;
+ esac; done
+
+ if [ $end -eq 0 ]; then
+ json_except "Document ended mid-string"
+ return 1
+ fi
+
+ printf "%s %s\n" "$(STRING "$string")" "$json_document"
+}
+
+json_key() {
+ local key json_document="$json_document"
+
+ json_space
+ case $json_document in
+ \"*)
+ key="$(json_string)" || return 1
+ json_document="${key#* }"
+ key="${key%% *}"
+ ;;
+ *) json_except "Expected key specifyer starting with '\"'"
+ return 1
+ ;;
+ esac
+ json_space
+ case $json_document in
+ :*) json_document="${json_document#?}"
+ ;;
+ *) json_except "Expected value separator \":\""
+ return 1
+ ;;
+ esac
+
+ printf '%s %s\n' "$key" "$json_document"
+}
+
+json_number() {
+ local number json_document="$json_document"
+
+ json_space
+ number="${json_document%%[" ${BR}${CR} ,}]"]*}"
+ json_document="${json_document#"$number"}"
+ if ! number="$(printf %f "$number")"; then
+ json_except "Invalid number format"
+ return 1
+ fi
+
+ printf '%s %s\n' "${number%.000000}" "$json_document"
+}
+
+json_array() {
+ local struct="$(DB2 new)" value json_document="$json_document"
+
+ json_space
+ case $json_document in
+ "["*) json_document="${json_document#?}"
+ ;;
+ *) json_except "Expected array starting with \"[\""
+ return 1
+ ;;
+ esac
+
+ json_space
+ case $json_document in
+ "]"*)
+ printf "%s %s\n" "" "${json_document#?}"
+ return 0
+ ;;
+ esac
+
+ while :; do
+ json_space
+
+ value="$(json_value)" || return 1
+ json_document="${value#* }"
+ value="$(UNSTRING "${value%% *}")"
+
+ struct="$(DB2 "$struct" append "@" "$value")" \
+ || struct="$(DB2 "$struct" set "@" "$value")"
+
+ json_space
+ case $json_document in
+ ,*) json_document="${json_document#?}"
+ ;;
+ "]"*) json_document="${json_document#?}"
+ break
+ ;;
+ *) json_except "Unexpected character mid-array"
+ return 1
+ ;;
+ esac
+ done
+
+ printf "%s %s\n" "$(STRING "$struct")" "$json_document"
+}
+
+json_object() {
+ local struct="$(DB2 new)" key value json_document="$json_document"
+
+ json_space
+ case $json_document in
+ "{"*) json_document="${json_document#?}"
+ ;;
+ *) json_except "Expected object starting with \"{\""
+ return 1
+ ;;
+ esac
+
+ json_space
+ case $json_document in
+ "}"*)
+ printf "%s %s\n" "" "${json_document#?}"
+ return 0
+ ;;
+ esac
+
+ while :; do
+ json_space
+
+ key="$(json_key)" || return 1
+ json_document="${key#* }"
+ key="$(UNSTRING "${key%% *}")"
+
+ value="$(json_value)" || return 1
+ json_document="${value#* }"
+ value="$(UNSTRING "${value%% *}")"
+
+ struct="$(DB2 "$struct" set "$key" "$value")"
+
+ json_space
+ case $json_document in
+ ,*) json_document="${json_document#?}"
+ ;;
+ "}"*) json_document="${json_document#?}"
+ break
+ ;;
+ *) json_except "Unexpected character mid-object"
+ return 1
+ ;;
+ esac
+ done
+
+ printf "%s %s\n" "$(STRING "$struct")" "$json_document"
+}
+
+json_value() {
+ local value json_document="$json_document"
+ json_type=""
+
+ json_space
+ case $json_document in
+ \"*)
+ value="$(json_string)" || return 1
+ json_document="${value#* }"
+ value="str:${value%% *}"
+ json_type=string
+ ;;
+ [+-.0-9]*)
+ value="$(json_number)" || return 1
+ json_document="${value#* }"
+ value="num:${value%% *}"
+ json_type=number
+ ;;
+ "{"*)
+ value="$(json_object)" || return 1
+ json_document="${value#* }"
+ value="obj:${value%% *}"
+ json_type=object
+ ;;
+ "["*)
+ value="$(json_array)" || return 1
+ json_document="${value#* }"
+ value="arr:${value%% *}"
+ json_type=array
+ ;;
+ null*)
+ json_document="${json_document#null}"
+ value="null"
+ json_type=null
+ ;;
+ true*)
+ json_document="${json_document#true}"
+ value="true"
+ json_type=boolean
+ ;;
+ false*)
+ json_document="${json_document#false}"
+ value="false"
+ json_type=boolean
+ ;;
+ esac
+
+ printf "%s %s\n" "$value" "$json_document"
+}
+
+json_load() {
+ local json_document="$1" json
+
+ json_value |UNSTRING
+}
+
+json_get() {
+ local json="$1" jpath="${2#.}" key idx
+ json_type=''
+
+ case $json in
+ str:*) json_type="string";;
+ arr:*) json_type="array";;
+ obj:*) json_type="object";;
+ num:*) json_type="number";;
+ true|false)
+ json_type="boolean";;
+ null) json_type="null";;
+ esac
+
+ case $jpath in
+ "")
+ printf %s\\n "${json#???:}"
+ return 0
+ ;;
+ "["[0-9]*"]"*)
+ idx="${jpath%%"]"*}" idx="${idx#"["}"
+ jpath="${jpath#"["*"]"}"
+ ;;
+ "['"*"']"*)
+ key="${jpath%%"']"*}" key="${key#"['"}"
+ jpath="${jpath#"['"*"']"}"
+ ;;
+ "$"*)
+ jpath="${jpath#?}"
+ ;;
+ *) key="${jpath%%[".["]*}"
+ jpath="${jpath#"$key"}"
+ ;;
+ esac
+
+ if [ "$key" -a "$json_type" = object ]; then
+ if ! json="$(DB2 "${json#obj:}" get "$key")"; then
+ debug "Key not found: \"$key\""
+ return 1
+ fi
+ elif [ "$idx" -a "$json_type" = array ]; then
+ if ! json="$(DB2 "${json#arr:}" get @ "$(( idx + 1 ))")"; then
+ debug "Array index not found: \"$idx\""
+ return 1
+ fi
+ elif [ "$key" ]; then
+ debug "Cannot select key (\"$key\") from value of type \"$json_type\""
+ return 1
+ elif [ "$idx" ]; then
+ debug "Cannot select index ($idx) from value of type \"$json_type\""
+ return 1
+ fi
+ json_get "$json" "$jpath"
+ return $?
+}
+
+json_dump_string() {
+ local in="$1" out=''
+ while [ "$in" ]; do case $in in
+ \\*) out="${out}\\\\"; in="${in#\\}" ;;
+ "$BR"*) out="${out}\\n"; in="${in#${BR}}" ;;
+ "$CR"*) out="${out}\\r"; in="${in#${CR}}" ;;
+ " "*) out="${out}\\t"; in="${in# }" ;;
+ \"*) out="${out}\\\""; in="${in#\"}" ;;
+ *) out="${out}${in%%[\\${CR}${BR} \"]*}"; in="${in#"${in%%[\\${BR}${CR} \"]*}"}" ;;
+ esac; done
+ printf '"%s"' "${out}"
+}
+
+json_dump_array() {
+ local json="$1" value out=''
+
+ for value in $(DB2 "$json" iterate @); do
+ out="${out},$(json_dump "$(UNSTRING "$value")")"
+ done
+ printf '[%s]' "${out#,}"
+}
+
+json_dump_object() {
+ local json="$1" key value out=''
+
+ while read -r key value; do
+ out="${out},$(json_dump_string "$(UNSTRING "$key")"):$(json_dump "$(UNSTRING "$value")")"
+ done <<-EOF
+ ${json}
+ EOF
+ printf '{%s}' "${out#,}"
+}
+
+json_dump() {
+ local json="$1"
+
+ case $json in
+ str:*)
+ json_dump_string "${json#str:}"
+ ;;
+ arr:*)
+ json_dump_array "${json#arr:}"
+ ;;
+ obj:*)
+ json_dump_object "${json#obj:}"
+ ;;
+ num:*)
+ printf "${json#num:}"
+ ;;
+ true|false|null)
+ printf %s\\n "$json"
+ ;;
+ *)
+ json_dump_string "${json}"
+ ;;
+ esac
+}
--- /dev/null
+#!/bin/sh
+
+# LOGLEVEL 1: Crash condition
+# LOGLEVEL 2: Unexpected condition
+# LOGLEVEL 3: Failed action (i.e. due to config error)
+# LOGLEVEL 4: Debug
+
+[ -n "$include_logging" ] && return 0
+include_logging="$0"
+
+LOGLEVEL="${LOGLEVEL:-3}"
+LOGFILE="${LOGFILE:-/dev/stderr}"
+
+logmsg(){
+ local ll="${1:-3}"
+ shift 1
+ if [ "$ll" -le "$LOGLEVEL" -a "$#" -gt 0 ]; then
+ printf %s\\n "$*" >>"${LOGFILE}"
+ elif [ "$ll" -le "$LOGLEVEL" ]; then
+ tee -a "${LOGFILE}"
+ elif [ ! "$#" -gt 0 ]; then
+ cat
+ fi
+}
+
+die(){
+ [ "$#" -gt 0 ] && logmsg 1 "$@"
+ exit 1
+}
+panic(){ logmsg 2 "$@"; }
+error(){ logmsg 3 "$@"; }
+debug(){ logmsg 4 "$@"; }
--- /dev/null
+#!/bin/awk -f
+#!/opt/busybox/awk -f
+
+# EXPERIMENTAL Markdown processor with minimal dependencies.
+# Meant to support all features of John Grubers basic Markdown
+# + a number of common extensions, mostly inspired by Pandoc Markdown
+
+# Copyright 2021 - 2023 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+# Supported Features / TODO:
+# ==========================
+# [x] done [ ] todo [-] not planned ? unsure
+#
+# Basic Markdown - Block elements:
+# -------------------------------
+# - [x] Paragraphs
+# - [x] Double space line breaks
+# - [x] Proper block element nesting
+# - [x] Headings
+# - [x] ATX-Style Headings
+# - [x] Blockquotes
+# - [x] Lists (ordered, unordered)
+# - [x] Code blocks (using indention)
+# - [x] Horizontal rules
+# - [x] Verbatim HTML block (disabled by default)
+#
+# Basic Markdown - Inline elements:
+# ---------------------------------
+# - [x] Links
+# - [x] Reference style links
+# - [x] Emphasis *em*/**strong** (*Asterisk*, _Underscore_)
+# - [x] `code`, also ``code containing `backticks` ``
+# - [x] Images / reference style images
+# - [x] <automatic links>
+# - [x] backslash escapes
+# - [x] Verbatim HTML inline (disabled by default)
+# - [x] HTML escaping
+#
+# NOTE: Set the environment variable MD_HTML=true to enable verbatim HTML
+#
+# Extensions - Block elements:
+# ----------------------------
+# - [x] Automatic <section>-wrapping (custom)
+# - ? Heading identifiers (php md, pandoc)
+# - [x] Heading attributes (custom)
+# - [ ] <hr> terminates section
+# - [x] Automatic heading identifiers (custom)
+# - [x] Fenced code blocks (php md, pandoc)
+# - [x] Fenced code attributes
+# - [x] Images (as block elements, <figure>-wrapped) (custom)
+# - [x] reference style block images
+# - [/] Tables
+# - ? Simple table (pandoc)
+# - ? Multiline table (pandoc)
+# - [x] Grid table (pandoc)
+# - [x] Headerless
+# - [x] Pipe table (php md, pandoc)
+# - [x] Line blocks (pandoc)
+# - [x] Task lists (pandoc, custom)
+# - [x] Definition lists (php md, pandoc)
+# - [-] Numbered example lists (pandoc)
+# - [-] Metadata blocks (pandoc)
+# - [x] Metadata blocks (custom)
+# - [x] Fenced Divs (pandoc)
+#
+# Extensions - Inline elements:
+# ----------------------------
+# - [x] Ignore embedded_underscores (php md, pandoc)
+# - [x] ~~strikeout~~ (pandoc)
+# - [x] ^Superscript^ ~Subscript~ (pandoc)
+# - [-] Bracketed spans (pandoc)
+# - [-] Inline attributes (pandoc)
+# - [x] Image attributes (custom, pandoc inspired, not for reference style)
+# - [x] Wiki style links [[PageName]] / [[PageName|Link Text]]
+# - [-] TEX-Math (pandoc)
+# - ? Footnotes (php md)
+# - ? Abbreviations (php md)
+# - ? "Curly quotes" (smartypants)
+# - [ ] em-dashes (--) (smartypants old)
+# - ? ... three-dot ellipsis (smartypants)
+# - [-] en-dash (smartypants)
+# - [ ] Automatic em-dash / en-dash
+# - [x] Automatic -> Arrows <- (custom)
+
+function debug(text) { printf "\n---\n%s\n---\n", text > "/dev/stderr"; }
+
+function HTML ( text ) {
+ gsub( /&/, "\\&", text );
+ gsub( /</, "\\<", text );
+ gsub( />/, "\\>", text );
+ gsub( /"/, "\\"", text );
+ gsub( /'/, "\\'", text );
+ gsub( /\\/, "\\\", text );
+ return text;
+}
+
+function URL ( text, sharp ) {
+ gsub( /&/, "%26", text );
+ gsub( /"/, "%22", text );
+ gsub( /'/, "%27", text );
+ gsub( /`/, "%60", text );
+ gsub( /\?/, "%3F", text );
+ if (sharp) gsub( /#/, "%23", text );
+ gsub( /\[/, "%5B", text );
+ gsub( /\]/, "%5D", text );
+ gsub( / /, "%20", text );
+ gsub( / /, "%09", text );
+ gsub( /\\/, "%5C", text );
+ return text;
+}
+
+function inline( line, LOCAL, len, text, code, href, guard ) {
+ if ( line ~ /^$/ ) { # Recursion End
+ return "";
+
+ # omit processing of escaped characters
+ } else if ( line ~ /^\\./) {
+ return HTML(substr(line, 2, 1)) inline( substr(line, 3) );
+
+ # hard brakes
+ } else if ( match(line, /^ \n/) ) {
+ return "<br>\n" inline( substr(line, RLENGTH + 1) );
+
+ # ``code spans``
+ } else if ( match( line, /^`+/) ) {
+ len = RLENGTH
+ guard = substr( line, 1, len )
+ if ( match(line, guard ".*" guard) ) {
+ code = substr( line, len + 1, match( substr(line, len + 1), guard ) - 1)
+ len = 2 * length(guard) + length(code)
+ # strip single surrounding white spaces
+ gsub( /^ | $/, "", code)
+ # escape HTML within code span
+ gsub( /&/, "\\&", code ); gsub( /</, "\\<", code ); gsub( />/, "\\>", code );
+ return "<code>" code "</code>" inline( substr( line, len + 1 ) )
+ }
+
+ # Macros
+ } else if ( match( line, /^<<([^>]|>[^>])+>>/ ) ) {
+ len = RLENGTH;
+ return "<code class=\"macro\">" HTML( substr( line, 3, len - 4 ) ) "</code>" inline(substr(line, len + 1));
+
+ # Wiki style links
+ } else if ( match( line, /^\[\[([^]|]+)(\|[^]]+)?\]\]/) ) {
+ len = RLENGTH;
+ href = gensub(/^\[\[([^]|]+)(\|([^]]+))?\]\]/, "\\1", 1, substr(line, 1, len) );
+ text = gensub(/^\[\[([^]|]+)(\|([^]]+))?\]\]/, "\\3", 1, substr(line, 1, len) );
+ if ( ! text ) text = href;
+ return "<a href=\"" URL(href) "\">" HTML(text) "</a>" inline( substr( line, len + 1) );
+
+ # quick links ("automatic links" in md doc)
+ } else if ( match( line, /^<[a-zA-Z]+:\/\/([-\.[:alnum:]]+)(:[0-9]*)?(\/[^>]*)?>/ ) ) {
+ len = RLENGTH;
+ href = URL( substr( line, 2, len - 2) );
+ return "<a href=\"" href "\">" href "</a>" inline( substr( line, len + 1) );
+
+ # quick link email
+ } else if ( match( line, /^<[a-zA-Z0-9.!#$%&'\''*+\/=?^_`{|}~-]+@[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*>/ ) ) {
+ len = RLENGTH;
+ href = URL( substr( line, 2, len - 2) );
+ return "<a href=\"mailto:" href "\">" href "</a>" inline( substr( line, len + 1) );
+
+ # Verbatim inline HTML
+ } else if ( AllowHTML && match( line, /^(<!--([^-]|-[^-]|--[^>])*-->|<\?([^\?]|\?[^>])*\?>|<![A-Z][^>]*>|<!\[CDATA\[([^\]]|\][^\]]|\]\][^>])*\]\]>|<\/[A-Za-z][A-Za-z0-9-]*[[:space:]]*>|<[A-Za-z][A-Za-z0-9-]*([[:space:]]+[A-Za-z_:][A-Za-z0-9_\.:-]*([[:space:]]*=[[:space:]]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))?)*[[:space:]]*\/?>)/) ) {
+ len = RLENGTH;
+ return substr( line, 1, len) inline(substr(line, len + 1));
+
+ # inline links
+ } else if ( match(line, "^" lii "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)") ) {
+ len = RLENGTH;
+ text = href = title = substr( line, 1, len);
+ sub("^\\[", "", text); sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)$", "", text);
+ sub("^" lii "\\([\n\t ]*", "", href); sub("([\n\t ]+" lit ")?[\n\t ]*\\)$", "", href);
+ sub("^" lii "\\([\n\t ]*" lid, "", title); sub("[\n\t ]*\\)$", "", title); sub("^[\n\t ]+", "", title);
+
+ if ( match(href, /^<.*>$/) ) { sub(/^</, "", href); sub(/>$/, "", href); }
+ if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+ else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+ else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+ gsub(/\\/, "", href); gsub(/\\/, "", title); gsub(/[\n\t]+/, " ", title);
+
+ return "<a href=\"" URL(href) "\"" (title?" title=\"" HTML(title) "\"":"") ">" \
+ inline( text ) "</a>" inline( substr( line, len + 1) );
+
+ # reference style links
+ } else if ( match(line, /^\[([^]]+)\] ?\[([^]]*)\]/ ) ) {
+ len = RLENGTH;
+ text = gensub(/^\[([^\n]+)\] ?\[([^\n]*)\].*/, "\\1", 1, substr(line, 1, len) );
+ id = gensub(/^\[([^\n]+)\] ?\[([^\n]*)\].*/, "\\2", 1, substr(line, 1, len) );
+ if ( ! id ) id = text;
+ if ( rl_href[id] && rl_title[id] ) {
+ return "<a href=\"" URL(rl_href[id]) "\" title=\"" HTML(rl_title[id]) "\">" inline(text) "</a>" inline( substr( line, len + 1) );
+ } else if ( rl_href[id] ) {
+ return "<a href=\"" URL(rl_href[id]) "\">" inline(text) "</a>" inline( substr( line, len + 1) );
+ } else {
+ return "" HTML(substr(line, 1, len)) inline( substr(line, len + 1) );
+ }
+
+ # inline images
+ } else if ( match(line, "^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?") ) {
+ len = RLENGTH; text = href = title = attrib = substr( line, 1, len);
+
+ sub("^!\\[", "", text);
+ sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", text);
+
+ sub("^!" lix "\\([\n\t ]*", "", href);
+ sub("([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", href);
+
+ sub("^!" lix "\\([\n\t ]*" lid, "", title);
+ sub("[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", title);
+ sub("^[\n\t ]+", "", title);
+
+ sub("^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)", "", attrib);
+ sub(/^\{[ \t]*/, "", attrib); sub(/[ \t]*\}$/, "", attrib); gsub(/[ \t]+/, " ", attrib);
+
+ if ( match(href, /^<.*>$/) ) { sub(/^</, "", href); sub(/>$/, "", href); }
+ if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+ else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+ else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+ gsub(/^[\t ]+$/, "", text); gsub(/\\/, "", href);
+ gsub(/\\/, "", title); gsub(/[\n\t]+/, " ", title);
+
+ return "<img src=\"" URL(href, 1) "\" alt=\"" HTML(text?text:title?title:href) "\"" \
+ (title?" title=\"" HTML(title) "\"":"") (attrib?" class=\"" HTML(attrib) "\"":"") \
+ ">" inline( substr( line, len + 1) );
+
+ # reference style images
+ } else if ( match(line, /^!\[([^]]*)\] ?\[([^]]*)\]/ ) ) {
+ len = RLENGTH;
+ text = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\].*/, "\\1", 1, substr(line, 1, len) );
+ id = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\].*/, "\\2", 1, substr(line, 1, len) );
+ if ( ! id ) id = text;
+ if ( rl_href[id] && rl_title[id] ) {
+ return "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\" title=\"" HTML(rl_title[id]) "\">" \
+ inline( substr( line, len + 1) );
+ } else if ( rl_href[id] ) {
+ return "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\">" \
+ inline( substr( line, len + 1) );
+ } else {
+ return "" HTML(substr(line, 1, len)) inline( substr(line, len + 1) );
+ }
+
+ # ~~strikeout~~ (pandoc)
+ } else if ( match(line, /^~~([[:graph:]]|[[:graph:]]([^~]|~[^~])*[[:graph:]])~~/) ) {
+ len = RLENGTH;
+ return "<del>" inline( substr( line, 3, len - 4 ) ) "</del>" inline( substr( line, len + 1 ) );
+
+ # ^superscript^ (pandoc)
+ } else if ( match(line, /^\^([^[:space:]^]|\\[ ^])+\^/) ) {
+ len = RLENGTH;
+ return "<sup>" inline( substr( line, 2, len - 2 ) ) "</sup>" inline( substr( line, len + 1 ) );
+
+ # ~subscript~ (pandoc)
+ } else if ( match(line, /^~([^[:space:]~]|\\[ ~])+~/) ) {
+ len = RLENGTH;
+ return "<sub>" inline( substr( line, 2, len - 2 ) ) "</sub>" inline( substr( line, len + 1 ) );
+
+ # ignore embedded underscores (pandoc, php md)
+ } else if ( match(line, "^[[:alnum:]](__|_)") ) {
+ return HTML(substr( line, 1, RLENGTH)) inline( substr(line, RLENGTH + 1) );
+
+ # __strong__$
+ } else if ( match(line, "^__(([^_[:space:]]|" ieu ")|([^_[:space:]]|" ieu ")(" nu "|" ieu ")*([^_[:space:]]|" ieu "))__$") ) {
+ len = RLENGTH;
+ return "<strong>" inline( substr( line, 3, len - 4 ) ) "</strong>" inline( substr( line, len + 1 ) );
+
+ # __strong__
+ } else if ( match(line, "^__(([^_[:space:]]|" ieu ")|([^_[:space:]]|" ieu ")(" nu "|" ieu ")*([^_[:space:]]|" ieu "))__[[:space:][:punct:]]") ) {
+ len = RLENGTH;
+ return "<strong>" inline( substr( line, 3, len - 5 ) ) "</strong>" inline( substr( line, len) );
+
+ # **strong**
+ } else if ( match(line, "^\\*\\*(([^\\*[:space:]]|" iea ")|([^\\*[:space:]]|" iea ")(" na "|" iea ")*([^\\*[:space:]]|" iea "))\\*\\*") ) {
+ len = RLENGTH;
+ return "<strong>" inline( substr( line, 3, len - 4 ) ) "</strong>" inline( substr( line, len + 1 ) );
+
+ # _em_$
+ } else if ( match(line, "^_(([^_[:space:]]|" isu ")|([^_[:space:]]|" isu ")(" nu "|" isu ")*([^_[:space:]]|" isu "))_$") ) {
+ len = RLENGTH;
+ return "<em>" inline( substr( line, 2, len - 2 ) ) "</em>" inline( substr( line, len + 1 ) );
+
+ # _em_
+ } else if ( match(line, "^_(([^_[:space:]]|" isu ")|([^_[:space:]]|" isu ")(" nu "|" isu ")*([^_[:space:]]|" isu "))_[[:space:][:punct:]]") ) {
+ len = RLENGTH;
+ return "<em>" inline( substr( line, 2, len - 3 ) ) "</em>" inline( substr( line, len ) );
+
+ # *em*
+ } else if ( match(line, "^\\*(([^\\*[:space:]]|" isa ")|([^\\*[:space:]]|" isa ")(" na "|" isa ")*([^\\*[:space:]]|" isa "))\\*") ) {
+ len = RLENGTH;
+ return "<em>" inline( substr( line, 2, len - 2 ) ) "</em>" inline( substr( line, len + 1 ) );
+
+ # Literal HTML entities
+ } else if ( match( line, /^&([a-zA-Z]{2,32}|#[0-9]{1,7}|#[xX][0-9a-fA-F]{1,6});/) ) {
+ len = RLENGTH;
+ return substr( line, 1, len ) inline(substr(line, len + 1));
+
+ # Arrows
+ } else if ( line ~ /^-->( |$)/) { # ignore multidash-arrow
+ return "-->" inline( substr(line, 4) );
+ } else if ( line ~ /^<-( |$)/) {
+ return "←" inline( substr(line, 3) );
+ } else if ( line ~ /^->( |$)/) {
+ return "→" inline( substr(line, 3) );
+
+ # Escape lone HTML character
+ } else if ( match( line, /^[&<>"']/) ) {
+ return HTML(substr(line, 1, 1)) inline(substr(line, 2));
+
+ # continue walk over string
+ } else {
+ return substr(line, 1, 1) inline( substr(line, 2) );
+ }
+}
+
+function headline( hlvl, htxt, attrib, LOCAL, sec, n, HL) {
+ match(hstack, /([0-9]+( [0-9]+){5})$/); split( substr(hstack, RSTART), HL);
+
+ for ( n = hlvl; n <= 6; n++ ) { sec = sec (HL[n]?"</section>":""); }
+ HL[hlvl]++; for ( n = hlvl + 1; n <= 6; n++) { HL[n] = 0;}
+
+ hid = ""; for ( n = 2; n <= blvl; n++) { hid = hid BL[n] "/"; }
+ hid = hid HL[1]; for ( n = 2; n <= hlvl; n++) { hid = hid "." HL[n] ; }
+ hid = hid ":" URL(htxt, 1);
+
+ sub(/([0-9]+( [0-9]+){5})$/, "", hstack);
+ hstack = hstack HL[1] " " HL[2] " " HL[3] " " HL[4] " " HL[5] " " HL[6];
+
+ return sec "<section class=\"" (attrib ? "h" hlvl " " attrib : "h" hlvl) "\" id=\"" hid "\">" \
+ "<h" hlvl (attrib ? " class=\"" attrib "\"" : "") ">" inline( htxt ) \
+ "<a class=\"anchor\" href=\"#" hid "\"></a>" \
+ "</h" hlvl ">\n";
+}
+
+# Nested Block, resets heading counters
+function _nblock( block, LOCAL, sec, n ) {
+ hstack = hstack " 0 0 0 0 0 0";
+
+ # Block Level
+ blvl++; BL[blvl]++;
+ for ( n = blvl + 1; n in BL; n++) { delete BL[n]; }
+
+ block = _block( block );
+ match(hstack, /([0-9]+( [0-9]+){5})$/); split( substr(hstack, RSTART), HL);
+ sec = ""; for ( n = 1; n <= 6; n++ ) { sec = sec (HL[n]?"</section>":""); }
+
+ sub("( +[0-9]+){6} *$", "", hstack); blvl--;
+ return block sec;
+}
+
+function _block( block, LOCAL, st, len, text, title, attrib, href, guard, code, indent, list ) {
+ gsub( "(^\n+|\n+$)", "", block );
+
+ if ( block == "" ) {
+ return "";
+
+ # HTML #2 #3 #4 $5
+ } else if ( AllowHTML && match( block, /(^|\n) ? ? ?(<!--([^-]|-[^-]|--[^>])*(-->|$)|<\?([^\?]|\?[^>])*(\?>|$)|<![A-Z][^>]*(>|$)|<!\[CDATA\[([^\]]|\][^\]]|\]\][^>])*(\]\]>|$))/) ) {
+ len = RLENGTH; st = RSTART;
+ return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+ # HTML #6
+ } else if ( AllowHTML && match( tolower(block), /(^|\n) ? ? ?<\/?(address|article|aside|base|basefont|blockquote|body|caption|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption|figure|footer|form|frame|frameset|h[123456]|head|header|hr|html|iframe|legend|li|link|main|menu|menuitem|nav|noframes|ol|optgroup|option|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr|track|ul)([[:space:]\n>]|\/>)([^\n]|\n[ \t]*[^\n])*(\n[[:space:]]*\n|$)/) ) {
+ len = RLENGTH; st = RSTART;
+ return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+ # HTML #1
+ } else if ( AllowHTML && match( tolower(block), /(^|\n) ? ? ?<(script|pre|style)([[:space:]\n>]).*(<\/script>|<\/pre>|<\/style>|$)/) ) {
+ len = RLENGTH; st = RSTART;
+ match( tolower(substr(block, st, len)), /(<\/script>|<\/pre>|<\/style>)/);
+ len = RSTART + RLENGTH;
+ return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+ # HTML #7
+ } else if ( AllowHTML && match( block, /^ ? ? ?(<\/[A-Za-z][A-Za-z0-9-]*[[:space:]]*>|<[A-Za-z][A-Za-z0-9-]*([[:space:]]+[A-Za-z_:][A-Za-z0-9_\.:-]*([[:space:]]*=[[:space:]]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))?)*[[:space:]]*\/?>)([[:space:]]*\n)([^\n]|\n[ \t]*[^\n])*(\n[[:space:]]*\n|$)/) ) {
+ len = RLENGTH; st = RSTART;
+ return substr(block, st, len) _block(substr(block, st + len));
+
+ # Metadata (custom, block starting with %something)
+ # Metadata is ignored but can be interpreted externally
+ } else if ( match(block, /^%[a-zA-Z]+([[:space:]][^\n]*)?(\n|$)(%[a-zA-Z]+([[:space:]][^\n]*)?(\n|$)|%([[:space:]][^\n]*)?(\n|$)|[ \t]+[^\n[:space:]][^\n]*(\n|$))*/) ) {
+ len = RLENGTH; st = RSTART;
+ return _block( substr( block, len + 1) );
+
+ # Blockquote (leading >)
+ } else if ( match( block, /^> /) ) {
+ match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match(block, /$/);
+ len = RLENGTH; st = RSTART;
+ text = substr(block, 1, st - 1); gsub( /(^|\n)> /, "\n", text );
+ text = _nblock( text ); gsub( /^\n|\n$/, "", text )
+ return "<blockquote>" text "</blockquote>\n\n" _block( substr(block, st + len) );
+
+ # Pipe Tables (pandoc / php md / gfm )
+ } else if ( match(block, "^((\\|)?([^\n]+\\|)+[^\n]+(\\|)?)\n" \
+ "((\\|)?(:?-+:?[\\|+])+:?-+:?(\\|)?)\n" \
+ "((\\|)?([^\n]+\\|)+[^\n]+(\\|)?(\n|$))+" ) ) {
+ len = RLENGTH; st = RSTART;
+ #initialize empty arrays
+ split("", talign); split("", tarray);
+ cols = 0; cnt=0; ttext = "";
+
+ # table header and alignment
+ split( gensub( /(^\||\|$)/, "", "g", \
+ gensub( /(^|[^\\])\\\|/, "\\1\\|", "g", \
+ substr(block, 1, match(block, /(\n|$)/)) \
+ )), tarray, /\|/);
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+ cols = split( \
+ gensub( /(^\||\|$)/, "", "g", \
+ substr(block, 1, match(block, /(\n|$)/)) \
+ ), talign, /[+\|]/);
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+
+ for( cnt = 1; cnt < cols; cnt++ ) {
+ if (match(talign[cnt], /:-+:/)) talign[cnt]="center";
+ else if (match(talign[cnt], /-+:/)) talign[cnt]="right";
+ else if (match(talign[cnt], /:-+/)) talign[cnt]="left";
+ else talign[cnt]="";
+ }
+
+ ttext = "<thead>\n<tr>"
+ for (cnt = 1; cnt < cols; cnt++)
+ ttext = ttext "<th align=\"" talign[cnt] "\">" inline(tarray[cnt]) "</th>"
+ ttext = ttext "</tr>\n</thead><tbody>\n"
+
+ while ( match(block, "^((\\|)?([^\n]+\\|)+[^\n]+(\\|)?(\n|$))+" ) ){
+ split( gensub( /(^\||\|$)/, "", "g", \
+ gensub( /(^|[^\\])\\\|/, "\\1\\|", "g", \
+ substr(block, 1, match(block, /(\n|$)/)) \
+ )), tarray, /\|/);
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+
+ ttext = ttext "<tr>"
+ for (cnt = 1; cnt < cols; cnt++)
+ ttext = ttext "<td align=\"" talign[cnt] "\">" inline(tarray[cnt]) "</td>"
+ ttext = ttext "</tr>\n"
+ }
+ return "<table>" ttext "</tbody></table>\n" _block(block);
+
+ # Grid Tables (pandoc)
+ # (with, and without header)
+ } else if ( match( block, "^\\+(-+\\+)+\n" \
+ "(\\|([^\n]+\\|)+\n)+" \
+ "(\\+(:?=+:?\\+)+)\n" \
+ "((\\|([^\n]+\\|)+\n)+" \
+ "\\+(-+\\+)+(\n|$))+" \
+ ) || \
+ match( block, "^()()()" \
+ "(\\+(:?-+:?\\+)+)\n" \
+ "((\\|([^\n]+\\|)+\n)+" \
+ "\\+(-+\\+)+(\n|$))+" \
+ ) ) {
+ len = RLENGTH; st = RSTART;
+ #initialize empty arrays
+ split("", talign); split("", tarray); split("", tread);
+ cols = 0; cnt=0; ttext = "";
+
+ # Column Count
+ cols = split( gensub( "^(\\+(:?-+:?\\+)+)(\n.*)*$", "\\1", 1, block), tread, /\+/) - 2;
+ # debug(" Cols: " gensub( "^(\\+(:?-+:?\\+)+)(\n.*)*$", "\\1", 1, block ));
+
+ # table alignment
+ split( gensub( "^(.*\n)?\\+((:?=+:?\\+|(:-+|-+:|:-+:)\\+)+)(\n.*)$", "\\2", "g", block ), talign, /\+/ );
+ # debug("Align: " gensub( "^(.*\n)?\\+((:?=+:?\\+|(:-+|-+:|:-+:)\\+)+)(\n.*)$", "\\2", "g", block ));
+
+ for (cnt = 1; cnt <= cols; cnt++) {
+ if (match(talign[cnt], /:(-+|=+):/)) talign[cnt]="center";
+ else if (match(talign[cnt], /(-+|=+):/)) talign[cnt]="right";
+ else if (match(talign[cnt], /:(-+|=+)/ )) talign[cnt]="left";
+ else talign[cnt]="";
+ }
+
+ if ( match(block, "^\\+(-+\\+)+\n" \
+ "(\\|([^\n]+\\|)+\n)+" \
+ "\\+(:?=+:?\\+)+\n" \
+ "((\\|([^\n]+\\|)+\n)+" \
+ "\\+(-+\\+)+(\n|$))+" \
+ ) ) {
+ # table header
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+ while ( match(block, "^\\|([^\n]+\\|)+\n") ) {
+ split( gensub( /(^\||\|$)/, "", "g", \
+ gensub( /(^|[^\\])\\\|/, "\\1\\|", "g", \
+ substr(block, 1, match(block, /(\n|$)/)) \
+ )), tread, /\|/);
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+ for (cnt = 1; cnt <= cols; cnt++)
+ tarray[cnt] = tarray[cnt] "\n" tread[cnt];
+ }
+
+ ttext = "<thead>\n<tr>"
+ for (cnt = 1; cnt <= cols; cnt++)
+ ttext = ttext "<th align=\"" talign[cnt] "\">" _nblock(tarray[cnt]) "</th>"
+ ttext = ttext "</tr>\n</thead>"
+ }
+
+ # table body
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+ ttext = ttext "<tbody>\n"
+
+ while ( match(block, /^((\|([^\n]+\|)+\n)+\+(-+\+)+(\n|$))+/ ) ){
+ split("", tarray);
+ while ( match(block, /^\|([^\n]+\|)+\n/) ) {
+ split( gensub( /(^\||\|$)/, "", "g", \
+ gensub( /(^|[^\\])\\\|/, "\\1\\|", "g", \
+ substr(block, 1, match(block, /(\n|$)/)) \
+ )), tread, /\|/);
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+ for (cnt = 1; cnt <= cols; cnt++)
+ tarray[cnt] = tarray[cnt] "\n" tread[cnt];
+ }
+ block = substr(block, match(block, /(\n|$)/) + 1 );
+
+ ttext = ttext "<tr>"
+ for (cnt = 1; cnt <= cols; cnt++)
+ ttext = ttext "<td align=\"" talign[cnt] "\">" _nblock(tarray[cnt]) "</td>"
+ ttext = ttext "</tr>\n"
+ }
+ return "<table>" ttext "</tbody></table>\n" _nblock(block);
+
+ # Line Blocks (pandoc)
+ } else if ( match(block, /^\| [^\n]*(\n|$)(\| [^\n]*(\n|$)|[ \t]+[^\n[:space:]][^\n]*(\n|$))*/) ) {
+ len = RLENGTH; st = RSTART;
+
+ text = substr(block, 1, len); gsub(/\n[[:space:]]+/, " ", text);
+ gsub(/\n\| /, "\n", text); gsub(/^\| |\n$/, "", text);
+ text = inline(text); gsub(/\n/, "<br>\n", text);
+
+ return "<div class=\"line-block\">" text "</div>\n" _block( substr( block, len + 1) );
+
+ # Indented Code Block
+ } else if ( match(block, /^( |\t)( *\t*[^ \t\n]+ *\t*)+(\n|$)(( |\t)[^\n]+(\n|$)|[ \t]*(\n|$))*/) ) {
+ len = RLENGTH; st = RSTART;
+ code = substr(block, 1, len);
+ gsub(/(^|\n)( |\t)/, "\n", code);
+ gsub(/^\n|\n+$/, "", code);
+ return "<pre><code>" HTML( code ) "</code></pre>\n" \
+ _block( substr( block, len + 1 ) );
+
+ # Fenced Divs (pandoc, custom)
+ } else if ( match( block, /^(:::+)/ ) ) {
+ guard = substr( block, 1, RLENGTH );
+ code = block; sub(/^[^\n]+\n/, "", code);
+ attrib = gensub(/^:::+[ \t]*\{?[ \t]*([^\}\n]*)\}?[ \t]*\n.*$/, "\\1", 1, block);
+ gsub(/[^a-zA-Z0-9_-]+/, " ", attrib);
+ gsub(/(^ | $)/, "", attrib);
+ if ( match(code, "(^|\n)" guard "+(\n|$)" ) ) {
+ len = RLENGTH; st = RSTART;
+ return "<div class=\"" attrib "\">" _nblock( substr(code, 1, st - 1) ) "</div>\n" \
+ _block( substr( code, st + len ) );
+ } else {
+ match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match( block, /$/ );
+ len = RLENGTH; st = RSTART;
+ return "<p>" inline( substr(block, 1, st - 1) ) "</p>\n" \
+ _block( substr(block, st + len) );
+ }
+
+ # Fenced Code Block (pandoc)
+ } else if ( match( block, /^(~~~+|```+)/ ) ) {
+ guard = substr( block, 1, RLENGTH );
+ code = gensub(/^[^\n]+\n/, "", 1, block);
+ attrib = gensub(/^(~~~+|```+)[ \t]*\{?[ \t]*([^\}\n]*)\}?[ \t]*\n.*$/, "\\2", 1, block);
+ gsub(/[^a-zA-Z0-9_-]+/, " ", attrib);
+ gsub(/(^ | $)/, "", attrib);
+ if ( match(code, "(^|\n)" guard "+(\n|$)" ) ) {
+ len = RLENGTH; st = RSTART;
+ return "<pre><code class=\"" attrib "\">" HTML( substr(code, 1, st - 1) ) "</code></pre>\n" \
+ _block( substr( code, st + len ) );
+ } else {
+ match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match( block, /$/ );
+ len = RLENGTH; st = RSTART;
+ return "<p>" inline( substr(block, 1, st - 1) ) "</p>\n" \
+ _block( substr(block, st + len) );
+ }
+
+ # First Order Heading H1 + Attrib
+ } else if ( match( block, /^([^\n]+)([ \t]*\{([^\}\n]+)\})\n===+(\n|$)/ ) ) {
+ len = RLENGTH; text = attrib = block;
+ sub(/([ \t]*\{([^\}\n]+)\})\n===+(\n.*)?$/, "", text);
+ sub(/\}\n===+(\n.*)?$/, "", attrib); sub(/^([^\n]+)[ \t]*\{/, "", attrib);
+ gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); gsub(/(^ | $)/, "", attrib);
+
+ return headline(1, text, attrib) _block( substr( block, len + 1 ) );
+
+ # First Order Heading H1
+ } else if ( match( block, /^([^\n]+)\n===+(\n|$)/ ) ) {
+ len = RLENGTH; text = substr(block, 1, len);
+ sub(/\n===+(\n.*)?$/, "", text);
+
+ return headline(1, text, 0) _block( substr( block, len + 1 ) );
+
+ # Second Order Heading H2 + Attrib
+ } else if ( match( block, /^([^\n]+)([ \t]*\{([^\}\n]+)\})\n---+(\n|$)/ ) ) {
+ len = RLENGTH; text = attrib = block;
+ sub(/([ \t]*\{([^\}\n]+)\})\n---+(\n.*)?$/, "", text);
+ sub(/\}\n---+(\n.*)?$/, "", attrib); sub(/^([^\n]+)[ \t]*\{/, "", attrib);
+ gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); gsub(/(^ | $)/, "", attrib);
+
+ return headline(2, text, attrib) _block( substr( block, len + 1) );
+
+ # Second Order Heading H2
+ } else if ( match( block, /^([^\n]+)\n---+(\n|$)/ ) ) {
+ len = RLENGTH; text = substr(block, 1, len);
+ sub(/\n---+(\n.*)?$/, "", text);
+
+ return headline(2, text, 0) _block( substr( block, len + 1) );
+
+ # Nth Order Heading H1 H2 H3 H4 H5 H6 + Attrib
+ } else if ( match( block, /^(#{1,6})[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[ \t]*[^ \t\n#])+)[ \t]*#*([ \t]*\{([a-zA-Z \t-]*)\})(\n|$)/ ) ) {
+ len = RLENGTH; text = attrib = substr(block, 1, len);
+ match(block, /^#{1,6}/); n = RLENGTH;
+
+ sub(/^(#{1,6})[ \t]*/, "", text); sub(/[ \t]*#*([ \t]*\{([a-zA-Z \t-]*)\})(\n.*)?$/, "", text);
+ sub(/^(#{1,6})[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[ \t]*[^ \t\n#])+)[ \t]*#*[ \t]*\{/, "", attrib);
+ sub(/\})(\n.*)?$/, "", attrib);
+ gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); gsub(/(^ | $)/, "", attrib);
+
+ return headline( n, text, attrib ) _block( substr( block, len + 1) );
+
+ # Nth Order Heading H1 H2 H3 H4 H5 H6
+ } else if ( match( block, /^(#{1,6})[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[ \t]*[^ \t\n#])+)[ \t]*#*(\n|$)/ ) ) {
+ len = RLENGTH; text = substr(block, 1, len);
+ match(block, /^#{1,6}/); n = RLENGTH;
+ sub(/^(#{1,6})[ \t]*/, "", text); sub(/[ \t]*#*(\n.*)?$/, "", text);
+
+ return headline( n, text, 0 ) _block( substr( block, len + 1) );
+
+ # block images (wrapped in <figure>)
+ } else if ( match(block, "^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n|$)") ) {
+ len = RLENGTH; text = href = title = attrib = substr( block, 1, len);
+
+ sub("^!\\[", "", text);
+ sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n.*)?$", "", text);
+
+ sub("^!" lix "\\([\n\t ]*", "", href);
+ sub("([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n.*)?$", "", href);
+
+ sub("^!" lix "\\([\n\t ]*" lid, "", title);
+ sub("[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n.*)?$", "", title);
+ sub("^[\n\t ]+", "", title);
+
+ sub("^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)", "", attrib);
+ sub("(\n.*)?$", "", attrib);
+ sub(/^\{[ \t]*/, "", attrib); sub(/[ \t]*\}$/, "", attrib); gsub(/[ \t]+/, " ", attrib);
+
+ if ( match(href, /^<.*>$/) ) { sub(/^</, "", href); sub(/>$/, "", href); }
+ if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+ else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+ else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+ gsub(/^[\t ]+$/, "", text); gsub(/\\/, "", href);
+
+ return "<figure data-src=\"" URL(href, 1) "\"" (attrib?" class=\"" HTML(attrib) "\"":"") ">" \
+ "<img src=\"" URL(href, 1) "\" alt=\"" HTML(text?text:title?title:href) "\"" \
+ (attrib?" class=\"" HTML(attrib) "\"":"") ">" \
+ (title?"<figcaption>" inline(title) "</figcaption>":"") \
+ "</figure>\n\n" \
+ _block( substr( block, len + 1) );
+
+ # reference style images (block)
+ } else if ( match(line, /^!\[([^]]*)\] ?\[([^]]*)\](\n|$)/ ) ) {
+ len = RLENGTH;
+ text = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\](\n.*)?$/, "\\1", 1, block);
+ id = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\](\n.*)?$/, "\\2", 1, block);
+ if ( ! id ) id = text;
+ if ( rl_href[id] && rl_title[id] ) {
+ return "<figure data-src=\"" URL(rl_href[id], 1) "\">" \
+ "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\">" \
+ "<figcaption>" inline(rl_title[id]) "</figcaption>" \
+ "</figure>\n\n" \
+ _block( substr( block, len + 1) );
+ } else if ( rl_href[id] ) {
+ return "<figure data-src=\"" URL(rl_href[id], 1) "\">" \
+ "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\">" \
+ "</figure>\n\n" \
+ _block( substr( block, len + 1) );
+ } else {
+ return "<p>" HTML(substr(block, 1, len)) "</p>\n" _block( substr(block, len + 1) );
+ }
+
+ # Macros (standalone <<macro>> calls handled as block, so they are not wrapped in paragraph)
+ } else if ( match( block, /^<<(([^>]|>[^>])+)>>(\n|$)/ ) ) {
+ len = RLENGTH;
+ text = gensub(/^<<(([^>]|>[^>])+)>>(\n.*)?$/, "\\1", 1, block);
+ return "<code class=\"macro\">" HTML(text) "</code>" _block(substr(block, len + 1) );
+
+ # Definition list
+ } else if (match( block, "^(([ \t]*\n)*[^:\n \t][^\n]+\n" \
+ "([ \t]*\n)* ? ? ?:[ \t][^\n]+(\n|$)" \
+ "(([ \t]*\n)* ? ? ?:[ \t][^\n]+(\n|$)" \
+ "|[^:\n \t][^\n]+(\n|$)" \
+ "|( ? ? ?\t| +)[^\n]+(\n|$)" \
+ "|([ \t]*\n)+( ? ? ?\t| +)[^\n]+(\n|$))*)+" \
+ )) {
+ list = substr( block, 1, RLENGTH); block = substr( block, RLENGTH + 1);
+ return "\n<dl>\n" _dlist( list ) "</dl>\n" _block( block );
+
+ # Unordered list types
+ } else if ( text = _startlist( block, "ul", "-", "([+*•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+ return text;
+ } else if ( text = _startlist( block, "ul", "\\+", "([-*•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+ return text;
+ } else if ( text = _startlist( block, "ul", "\\*", "([-+•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+ return text;
+ } else if ( text = _startlist( block, "ul", "•", "([-+*]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+ return text;
+
+ # Ordered list types
+ } else if ( text = _startlist( block, "ol", "[0-9]+\\.", "([-+*•]|#\\.|[0-9]+\\)|#\\))") ) {
+ return text;
+ } else if ( text = _startlist( block, "ol", "[0-9]+\\)", "([-+*•]|[0-9]+\\.|#\\.|#\\))") ) {
+ return text;
+ } else if ( text = _startlist( block, "ol", "#\\.", "([-+*•]|[0-9]+\\.|[0-9]+\\)|#\\))") ) {
+ return text;
+ } else if ( text = _startlist( block, "ol", "#\\)", "([-+*•]|[0-9]+\\.|#\\.|[0-9]+\\))") ) {
+ return text;
+
+ # Split paragraphs
+ } else if ( match( block, /(^|\n)[[:space:]]*(\n|$)/) ) {
+ len = RLENGTH; st = RSTART;
+ return _block( substr(block, 1, st - 1) ) "\n" \
+ _block( substr(block, st + len) );
+
+ # Horizontal rule
+ } else if ( match( block, /(^|\n) ? ? ?((\* *){3,}|(- *){3,}|(_ *){3,})($|\n)/) ) {
+ len = RLENGTH; st = RSTART;
+ return _block(substr(block, 1, st - 1)) "<hr>\n" _block(substr(block, st + len));
+
+ # Plain paragraph
+ } else {
+ return "<p>" inline(block) "</p>\n";
+ }
+}
+
+function _startlist(block, type, mark, exclude, LOCAL, st, len, list, indent, text) {
+ if (match( block, "(^|\n) ? ? ?" mark "[ \t][^\n]+(\n|$)" \
+ "(([ \t]*\n)* ? ? ?" mark "[ \t][^\n]+(\n|$)" \
+ "|([ \t]*\n)*( ? ? ?\t| +)[^\n]+(\n|$)" \
+ "|[^\n \t][^\n]+(\n|$))*" ) ) {
+ st = RSTART; len = RLENGTH; list = substr( block, st, len);
+
+ sub("^\n", "", list); match(list, "^ ? ? ?"); indent = RLENGTH;
+ gsub( "(^|\n) {0," indent "}", "\n", list); sub("^\n", "", list);
+
+ text = substr(block, 1, st - 1); block = substr(block, st + len);
+ if (match(text, /\n[[:space:]]*\n/)) return 0;
+ if (match(text, "(^|\n) ? ? ?" exclude "[ \t][^\n]+")) return 0;
+ if (match( list, "\n" exclude "[ \t]" )) {
+ block = substr(list, RSTART + 1) block;
+ list = substr(list, 1, RSTART);
+ }
+
+ return _block( text ) "<" type ">\n" _list( list, mark ) "</" type ">\n" _block( block );
+ } else return 0;
+}
+
+function _list (block, mark, p, LOCAL, len, st, text, indent, task) {
+ if ( match(block, "^([ \t]*\n)*$")) return;
+
+ match(block, "^" mark "[ \t]"); indent = RLENGTH;
+ sub("^" mark "[ \t]", "", block);
+
+ if (match(block, /\n[ \t]*\n/)) p = 1;
+
+ match( block, "\n" mark "[ \t][^\n]+(\n|$)" );
+ st = (RLENGTH == -1) ? length(block) + 1 : RSTART;
+ text = substr(block, 1, st); block = substr(block, st + 1);
+
+ gsub("\n {0," indent "}", "\n", text);
+
+ task = match( text, /^\[ \]/ ) ? "<li class=\"task pending\"><input type=checkbox disabled>" : \
+ match( text, /^\[-\]/ ) ? "<li class=\"task negative\"><input type=checkbox disabled>" : \
+ match( text, /^\[\/\]/ ) ? "<li class=\"task partial\"><input type=checkbox disabled>" : \
+ match( text, /^\[\?\]/ ) ? "<li class=\"task unsure\"><input type=checkbox disabled>" : \
+ match( text, /^\[[xX]\]/) ? "<li class=\"task done\"><input type=checkbox disabled checked>" : "<li>";
+ sub(/^\[[-? \/xX]\]/, "", text);
+
+ text = _nblock( text );
+ if ( ! p && match( text, "^<p>(</p[^>]|</[^p]|<[^/]|[^<])*</p>\n$" ))
+ gsub( "(^<p>|</p>\n$)", "", text);
+
+ return task text "</li>\n" _list(block, mark, p);
+}
+
+function _dlist (block, LOCAL, len, st, text, indent, p) {
+ if (match( block, "^([ \t]*\n)*[^:\n \t][^\n]+\n" )) {
+ len = RLENGTH; text = substr(block, 1, len);
+ gsub( "(^\n*|\n*$)", "", text );
+ return "<dt>" inline( text ) "</dt>\n" _dlist( substr(block, len + 1) );
+ } else if (match( block, "^([ \t]*\n)* ? ? ?:[ \t][^\n]+(\n|$)" \
+ "([^:\n \t][^\n]+(\n|$)" \
+ "|( ? ? ?\t| +)[^\n]+(\n|$)" \
+ "|([ \t]*\n)+( ? ? ?\t| +)[^\n]+(\n|$))*" \
+ )) {
+ len = RLENGTH; text = substr(block, 1, len);
+ sub( "^([ \t]*\n)*", "", text);
+ match(text, "^ ? ? ?:(\t| +)"); indent = RLENGTH;
+ sub( "^ ? ? ?:(\t| +)", "", text);
+ gsub( "(^|\n) {0," indent "}", "\n", text );
+
+ text = _nblock(text);
+ if (match( text, "^<p>(</p[^>]|</[^p]|<[^/]|[^<])*</p>\n$" ))
+ gsub( "(^<p>|</p>\n$)", "", text);
+
+ return "<dd>" text "</dd>\n" _dlist( substr(block, len + 1) );
+ }
+}
+
+BEGIN {
+ # Global Vars
+ file = ""; rl_href[""] = ""; rl_title[""] = "";
+ if (ENVIRON["MD_HTML"] == "true") { AllowHTML = "true"; }
+ HL[1] = 0; HL[2] = 0; HL[3] = 0; HL[4] = 0; HL[5] = 0; HL[6] = 0;
+ # hls = "0 0 0 0 0 0";
+
+ # Universal Patterns
+ nu = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\_]|_[[:alnum:]])*" # not underline (except when escaped)
+ na = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\\\*])*" # not asterisk (except when escaped)
+ ieu = "_([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])_" # inner <em> (underline)
+ isu = "__([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])__" # inner <strong> (underline)
+ iea = "\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*" # inner <em> (asterisk)
+ isa = "\\*\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*\\*" # inner <strong> (asterisk)
+
+ lix="\\[(\\\\[^\n]|[^]\n\\\\[])*\\]" # link text
+ lid="(<(\\\\[^\n]|[^\n<>\\\\])*>|(\\\\.|[^()\"'\\\\])+|([^<\n\t ()\\\\]|\\\\[^\n])(\\\\[\n]|[^\n\t \\(\\)\\\\])*)" # link dest
+ lit="(\"(\\\\.|[^\"\\\\])*\"|'(\\\\.|[^'\\\\])*'|\\((\\\\.|[^\\(\\)\\\\])*\\))" # link text
+ # link text with image def
+ lii="\\[(\\\\[^\n]|[^]\n\\\\[])*(!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\))?(\\\\[^\n]|[^]\n\\\\[])*\\]"
+
+ # Buffering of full file ist necessary, e.g. to find reference links
+ while (getline) { file = file $0 "\n"; }
+ # Clean up MS-DOS line breaks
+ gsub(/\r\n/, "\n", file);
+
+ # Fill array of reference links
+ f = file; rl_id;
+ re_reflink = "(^|\n) ? ? ?\\[([^]\n]+)\\]: ([^ \t\n]+)(\n?[ \t]+(\"([^\"]+)\"|'([^']+)'|\\(([^)]+)\\)))?(\n|$)";
+ # /(^|\n) ? ? ?\[([^]\n]+)\]: ([^ \t\n]+)(\n?[ \t]+("([^"]+)"|'([^']+)'|\(([^)]+)\)))?(\n|$)/
+ while ( match(f, re_reflink ) ) {
+ rl_id = gensub( re_reflink, "\\2", 1, substr(f, RSTART, RLENGTH) );
+ rl_href[rl_id] = gensub( re_reflink, "\\3", 1, substr(f, RSTART, RLENGTH) );
+ rl_title[rl_id] = gensub( re_reflink, "\\5", 1, substr(f, RSTART, RLENGTH) );
+ f = substr(f, RSTART + RLENGTH);
+ rl_title[rl_id] = substr( rl_title[rl_id], 2, length(rl_title[rl_id]) - 2 );
+ if ( rl_href[rl_id] ~ /<.*>/ ) rl_href[rl_id] = substr( rl_href[rl_id], 2, length(rl_href[rl_id]) - 2 );
+ }
+ # Clear reflinks from File
+ while( gsub(re_reflink, "\n", file ) );
+ # for (n in rl_href) { debug(n " | " rl_href[n] " | " rl_title[n] ); }
+
+ # Run Block Processing -> The Actual Markdown!
+ printf "%s", _nblock( file );
+}
--- /dev/null
+#!/bin/sh
+
+# Copyright 2018 - 2022 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[ -n "$include_session" ] && return 0
+include_session="$0"
+
+export _DATE="$(date +%s)"
+SESSION_TIMEOUT="${SESSION_TIMEOUT:-7200}"
+
+if ! which uuencode >/dev/null; then
+ uuencode() { busybox uuencode "$@"; }
+fi
+if ! which sha256sum >/dev/null; then
+ sha256sum() { busybox sha256sum "$@"; }
+fi
+
+if which openssl >/dev/null; then
+ session_mac(){ { [ $# -gt 0 ] && printf %s "$*" || cat; } | openssl dgst -sha1 -hmac "$(server_key)" -binary |slopecode; }
+else
+ # Gonzo MAC if openssl is unavailable
+ session_mac(){
+ { server_key | dd status=none bs=256 count=1 skip=1
+ { server_key | dd status=none bs=256 count=1
+ [ $# -gt 0 ] && printf %s "$*" || cat
+ } \
+ | sha256sum -;
+ } \
+ | sha256sum | cut -d\ -f1
+ }
+fi
+
+server_key(){
+ IDFILE="${IDFILE:-${_DATA:-.}/serverkey}"
+ if [ "$(stat -c %s "$IDFILE")" -ne 512 ] || ! cat "$IDFILE"; then
+ dd count=1 bs=512 if=/dev/urandom \
+ | tee "$IDFILE"
+ fi 2>&-
+}
+
+slopecode(){
+ # 6-Bit Code that retains sort order of input data, while beeing safe to use
+ # in ascii transmissions, unix file names, HTTP URLs, and HTML attributes
+
+ { [ $# -gt 0 ] && printf %s "$*" || cat; } \
+ | uuencode -m - | sed '
+ 1d;$d;
+ y;ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/;0123456789:=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz;
+ '
+}
+
+randomid(){
+ dd bs=12 count=1 if=/dev/urandom 2>&- \
+ | slopecode
+}
+
+timeid(){
+ d=$(($_DATE % 4294967296))
+ { printf "$(
+ printf \\%o \
+ $((d / 16777216 % 256)) \
+ $((d / 65536 % 256)) \
+ $((d / 256 % 256)) \
+ $((d % 256))
+ )"
+ dd bs=8 count=1 if=/dev/urandom 2>&-
+ } | slopecode
+}
+
+transid(){
+ # transaction ID to modify a given file
+ local file="$1"
+ session_mac "$(stat -c %F%i%n%N%s%Y "$file" 2>&-)" "$SESSION_ID"
+}
+
+checkid(){ { [ $# -gt 0 ] && printf %s "$*" || cat; } | grep -m 1 -xE '[0-9a-zA-Z:=]{16}'; }
+
+update_session(){
+ local session sid time sig checksig
+ unset SESSION_KEY SESSION_ID
+
+ read -r sid time sig <<-END
+ $(POST session_key || COOKIE session)
+ END
+
+ checksig="$(session_mac "$sid" "$time")"
+
+ if [ "$checksig" = "$sig" \
+ -a "$time" -ge "$_DATE" \
+ -a "$(checkid "$sid")" ] 2>&-
+ then
+ time=$(( $_DATE + $SESSION_TIMEOUT ))
+ sig="$(session_mac "$sid" "$time")"
+
+ SESSION_KEY="${sid} ${time} ${sig}"
+ SESSION_ID="${sid}"
+ return 0
+ else
+ return 1
+ fi
+
+}
+
+new_session(){
+ local sid time sig
+
+ debug "Setting up new session"
+ sid="$(randomid)"
+ time=$(( $_DATE + $SESSION_TIMEOUT ))
+ sig="$(session_mac "$sid" "$time")"
+
+ SESSION_KEY="${sid} ${time} ${sig}"
+ SESSION_ID="${sid}"
+}
+
+SESSION_BIND() {
+ # Set tamper-proof authenticated cookie
+ local key="$1" value="$2"
+ SET_COOKIE session "$key"="${value} $(session_mac "$value" "$SESSION_ID")" Path="/${_BASE#/}" SameSite=Strict HttpOnly
+}
+
+SESSION_VAR() {
+ # read authenticated cookie
+ # fail if value has been tampered with
+ local key="$1" value sig
+ value="$(COOKIE "$key")"
+ sig="${value##* }" value="${value% *}"
+ if [ "$sig" = "$(session_mac "$value" "$SESSION_ID")" ]; then
+ printf %s\\n "$value"
+ else
+ return 1
+ fi
+}
+
+SESSION_COOKIE() {
+ [ "$1" = new ] && new_session
+ SET_COOKIE 0 session="$SESSION_KEY" Path="/${_BASE#/}" SameSite=Strict HttpOnly
+}
+
+update_session || new_session
--- /dev/null
+#!/bin/sh
+
+# Copyright 2018 - 2021 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[ -n "$include_storage" ] && return 0
+include_storage="$0"
+
+CR="\r"
+BR='
+'
+
+LOCK(){
+ local lock="${1}.lock" timeout="${2-20}" block
+
+ if [ \! -w "${lock%/*}" ] || [ -e "$lock" -a \! -f "$lock" ]; then
+ debug "Impossible to get lock: $lock"
+ return 1
+ fi
+
+ while [ $timeout -gt 0 ]; do
+ printf '%i\n' $$ >>"${lock}"
+ read block <"$lock"
+ if [ "$block" = $$ ]; then
+ return 0
+ elif ! { ps -eo pid |grep -qwF "$block"; }; then
+ debug "Trying to override stale lock: $lock"
+ if LOCK "$lock" 1; then
+ rm -- "$lock"
+ RELEASE "$lock"
+ fi
+ else
+ timeout=$((timeout - 1))
+ [ $timeout -gt 0 ] && sleep 1
+ fi
+ done
+
+ debug "Timeout while trying to get lock: $lock"
+ return 1
+}
+
+RELEASE(){
+ local lock="${1}.lock" block
+
+ read block <"$lock"
+ if [ "$block" = $$ ]; then
+ rm -- "$lock"
+ return 0
+ else
+ debug "Refusing to release foreign lock: $lock"
+ return 1
+ fi
+}
+
+STRING(){
+ local in out=''
+ [ $# -gt 0 ] && in="$*" || in="$(cat)"
+ while [ "$in" ]; do case $in in
+ \\*) out="${out}\\\\"; in="${in#\\}" ;;
+ "$BR"*) out="${out}\\n"; in="${in#${BR}}" ;;
+ "$CR"*) out="${out}\\r"; in="${in#${CR}}" ;;
+ " "*) out="${out}\\t"; in="${in# }" ;;
+ +*) out="${out}\\+"; in="${in#+}" ;;
+ " "*) out="${out}+"; in="${in# }" ;;
+ *) out="${out}${in%%[\\${CR}${BR} + ]*}"; in="${in#"${in%%[\\${BR}${CR} + ]*}"}" ;;
+ esac; done
+ printf '%s' "${out:-\\}"
+}
+
+UNSTRING(){
+ local in out=''
+ [ $# -gt 0 ] && in="$*" || in="$(cat)"
+ while [ "$in" ]; do case $in in
+ \\\\*) out="${out}\\"; in="${in#\\\\}" ;;
+ \\n*) out="${out}${BR}"; in="${in#\\n}" ;;
+ \\r*) out="${out}${CR}"; in="${in#\\r}" ;;
+ \\t*) out="${out} "; in="${in#\\t}" ;;
+ \\+*) out="${out}+"; in="${in#\\+}" ;;
+ +*) out="${out} "; in="${in#+}" ;;
+ \\*) in="${in#\\}" ;;
+ *) out="${out}${in%%[\\+]*}"; in="${in#"${in%%[\\+]*}"}" ;;
+ esac; done
+ printf '%s\n' "$out"
+}
+
+DBM() {
+ local file="$1" cmd="$2"
+ local k v key value
+ shift 2;
+
+ case "$cmd" in
+ check|contains)
+ key="$(STRING "$1")"
+ while read -r k v; do if [ "$k" = "$key" ]; then
+ return 0
+ fi; done <"$file" 2>&-
+ return 1
+ ;;
+ get)
+ key="$(STRING "$1")"
+ while read -r k v; do if [ "$k" = "$key" ]; then
+ UNSTRING "$v"
+ return 0
+ fi; done <"$file" 2>&-
+ return 1
+ ;;
+ set|store)
+ key="$(STRING "$1")" value="$(STRING "$2")"
+ LOCK "$file" || return 1
+ { while read -r k v; do
+ [ "$k" = "$key" ] || printf '%s\t%s\n' "$k" "$v"
+ done <"$file" 2>&-
+ printf '%s\t%s\n' "$key" "$value"
+ } >"${file}.$$.tmp"
+ mv "${file}.$$.tmp" "${file}"
+ RELEASE "$file"
+ return 0
+ ;;
+ add|insert)
+ k="$1" key="$(STRING "$1")" value="$(STRING "$2")"
+ LOCK "$file" || return 1
+ if DBM "$file" check "$k"; then
+ RELEASE "$file"
+ return 1
+ else
+ printf '%s\t%s\n' "$key" "$value" >>"${file}"
+ RELEASE "$file"
+ return 0
+ fi
+ ;;
+ update|replace)
+ k="$1" key="$(STRING "$1")" value="$(STRING "$2")"
+ LOCK "$file" || return 1
+ if ! DBM "$file" check "$k"; then
+ RELEASE "$file"
+ return 1
+ fi
+ { while read -r k v; do
+ [ "$k" = "$key" ] \
+ && printf '%s\t%s\n' "$key" "$value" \
+ || printf '%s\t%s\n' "$k" "$v"
+ done <"$file" 2>&-
+ } >"${file}.$$.tmp"
+ mv "${file}.$$.tmp" "${file}"
+ RELEASE "$file"
+ return 0
+ ;;
+ append)
+ key="$(STRING "$1")" value="$(STRING "$2")"
+ LOCK "$file" || return 1
+ if ! DBM "$file" check "$1"; then
+ RELEASE "$file"
+ return 1
+ fi
+ { while read -r k v; do
+ [ "$k" = "$key" ] \
+ && printf '%s\t%s\n' "$key" "$v$value" \
+ || printf '%s\t%s\n' "$k" "$v"
+ done <"$file" 2>&-
+ } >"${file}.$$.tmp"
+ mv "${file}.$$.tmp" "${file}"
+ RELEASE "$file"
+ return 0
+ ;;
+ delete|remove)
+ key="$(STRING "$1")"
+ LOCK "$file" || return 1
+ { while read -r k v; do
+ [ "$k" = "$key" ] || printf '%s\t%s\n' "$k" "$v"
+ done <"$file" 2>&-
+ } >"${file}.$$.tmp"
+ mv "${file}.$$.tmp" "${file}"
+ RELEASE "$file"
+ return 0
+ ;;
+ esac
+}
--- /dev/null
+#!/bin/sh
+
+# Copyright 2021 - 2024 Paul Hänsch
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+[ -n "$include_users" ] && return 0
+include_users="$0"
+
+. "${_EXEC:-.}/cgilite/session.sh"
+. "${_EXEC:-.}/cgilite/storage.sh"
+
+SENDMAIL=${SENDMAIL-sendmail}
+
+USER_REGISTRATION="${USER_REGISTRATION-true}"
+USER_REQUIREEMAIL="${USER_REQUIREEMAIL-true}"
+USER_ACCOUNTPAGE="${USER_ACCOUNTPAGE}"
+
+USER_ACCOUNTEXPIRE="${USER_ACCOUNTEXPIRE:-$((86400 * 730))}"
+USER_CONFIRMEXPIRE="${USER_CONFIRMEXPIRE:-86400}"
+
+HTTP_HOST="$(HEADER Host)"
+MAILFROM="noreply@${HTTP_HOST%:*}"
+
+[ "$HTTPS" ] && SCHEMA=https || SCHEMA=http
+
+# == FILE FORMAT ==
+# UID UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+# (pending|active|deleted)
+
+# == GLOBALS ==
+UNSET_USER='unset \
+ USER_ID USER_NAME USER_STATUS USER_EMAIL USER_PWSALT USER_PWHASH \
+ USER_EXPIRE USER_DEVICES USER_FUTUREUSE
+'
+
+LOCAL_USER='local \
+ USER_ID USER_NAME USER_STATUS USER_EMAIL USER_PWSALT USER_PWHASH \
+ USER_EXPIRE USER_DEVICES USER_FUTUREUSE
+'
+
+# == TRANSLATIONS ==
+# override all functions marked with "TRANSLATION"
+# sed -n '/TRANSLATION$/,/^}/p;' <cgilite/users.sh
+
+unset USER_IDMAP
+eval "$UNSET_USER"
+
+user_db="${user_db:-${_DATA}/users.db}"
+
+read_user() {
+ local user="$1"
+
+ # Global exports
+ USER_ID='' USER_NAME='' USER_STATUS='' USER_EMAIL='' USER_PWSALT=''
+ USER_PWHASH='' USER_EXPIRE='' USER_DEVICES='' USER_FUTUREUSE=''
+
+ if [ $# -eq 0 ]; then
+ read -r USER_ID USER_NAME USER_STATUS USER_EMAIL USER_PWSALT USER_PWHASH \
+ USER_EXPIRE USER_DEVICES USER_FUTUREUSE
+ elif [ "$user" -a -f "$user_db" -a -r "$user_db" ]; then
+ read -r USER_ID USER_NAME USER_STATUS USER_EMAIL USER_PWSALT USER_PWHASH \
+ USER_EXPIRE USER_DEVICES USER_FUTUREUSE <<-EOF
+ $(grep "^${user} " "${user_db}")
+ EOF
+ fi
+ if [ "$USER_ID" -a "${USER_EXPIRE:-0}" -gt "$_DATE" ]; then
+ USER_NAME="$(UNSTRING "$USER_NAME")"
+ USER_EMAIL="$(UNSTRING "$USER_EMAIL")"
+ USER_DEVICES="$(UNSTRING "$USER_DEVICES")"
+ unset USER_PWSALT USER_PWHASH
+ else
+ eval "$UNSET_USER"
+ return 1
+ fi
+}
+
+update_user() {
+ # internal function for user update
+ local uid="$1" uname status email pwsalt pwhash expire devices futureuse
+ local UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+ local arg
+
+ for arg in "$@"; do case $arg in
+ uname=*) uname="${arg#*=}";;
+ status=*) status="${arg#*=}";;
+ email=*) email="${arg#*=}";;
+ password=*) pwsalt="$(randomid)"; pwhash="$(user_pwhash "$pwsalt" "${arg#*=}")";;
+ expire=*) expire="${arg#*=}";;
+ devices=*) devices="${arg#*=}";;
+ esac; done
+
+ if LOCK "$user_db"; then
+ while read -r UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES \
+ FUTUREUSE; do
+ if [ "$UID_" = "$uid" ]; then
+ printf '%s %s %s %s %s %s %i %s %s\n' \
+ "$uid" "$(STRING "${uname-$(UNSTRING "$UNAME")}")" \
+ "${status:-${status-${STATUS}}${status+\\}}" \
+ "${email:-${email-${EMAIL}}${email+\\}}" \
+ "${pwsalt:-${PWSALT}}" "${pwhash:-${PWHASH}}" \
+ "${expire:-$((_DATE + USER_ACCOUNTEXPIRE))}" \
+ "$(STRING "${devices-$(UNSTRING "$DEVICES")}")" \
+ "${FUTUREUSE:-\\}"
+ elif [ "$STATUS" = pending -a ! "$EXPIRE" -ge "$_DATE" ]; then
+ # omit expired invitations from output
+ :
+ else
+ printf '%s %s %s %s %s %s %i %s %s\n' \
+ "$UID_" "$UNAME" "$STATUS" "$EMAIL" "$PWSALT" "$PWHASH" \
+ "$EXPIRE" "$DEVICES" "$FUTUREUSE"
+ fi
+ done <"$user_db" >"${user_db}.$$"
+ mv -- "${user_db}.$$" "$user_db"
+ RELEASE "$user_db"
+ else
+ return 1
+ fi
+}
+
+new_user(){
+ local user="${1:-$(timeid)}"
+ shift 1
+
+ if LOCK "$user_db"; then
+ if grep -q "^${user} " "$user_db"; then
+ RELEASE "$user_db"
+ return 1
+ fi
+ printf '%s \\ %s \\ \\ \\ %i \\ \\\n' \
+ "$user" "pending" "$(( _DATE + USER_CONFIRMEXPIRE ))" >>"$user_db"
+ else
+ return 1
+ fi
+
+ if [ $# -eq 0 ]; then
+ RELEASE "$user_db"
+ return 0
+ elif update_user "$user" "$@"; then
+ return 0
+ else
+ RELEASE "$user_db"
+ return 1
+ fi
+}
+
+user_idmap(){
+ local uid="$1" ret
+ eval "$LOCAL_USER"
+
+ if [ ! "$USER_IDMAP" ]; then
+ while read_user; do
+ USER_IDMAP="${USER_IDMAP}${USER_ID} ${USER_NAME}${BR}"
+ done <"$user_db"
+ fi
+ if [ "$uid" -a "$USER_IDMAP" != "${USER_IDMAP##*${uid} }" ]; then
+ ret="${USER_IDMAP##*${uid} }"; ret="${ret%%${BR}*}";
+ printf '%s\n' "$ret"
+ return 0
+ elif [ "$uid" ]; then
+ return 1
+ else
+ printf '%s' "$USER_IDMAP"
+ return 0
+ fi
+}
+
+user_idof(){
+ local name="$(STRING "$1")" ret
+ [ "$USER_IDMAP" ] || user_idmap >/dev/null
+
+ if [ "${name%\\}" -a "$USER_IDMAP" != "${USER_IDMAP% ${name}${BR}*}" ]; then
+ ret="${USER_IDMAP% ${name}${BR}*}"; ret="${ret##*${BR}}"
+ printf '%s\n' "$ret"
+ return 0
+ else
+ return 1
+ fi
+}
+
+user_checkname(){
+ { [ $# -gt 0 ] && printf %s "$*" || cat; } \
+ | sed -nE '
+ :X; $!{N;bX;}
+ s;[ \t\r\n]+; ;g;
+ s;^ ;;; s; $;;;
+ /@/d;
+ /^[a-zA-Z][a-zA-Z0-9 -~]{2,127}$/!d;
+ p;
+ '
+}
+
+user_checkemail(){
+ { [ $# -gt 0 ] && printf %s "$*" || cat; } \
+ | sed -nE '
+ # W3C recommended email regex
+ # https://html.spec.whatwg.org/multipage/input.html#email-state-(type=email)
+ /^[a-zA-Z0-9.!#$%&'\''*+\/=?^_`{|}~-]+@[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/p;
+ '
+}
+
+user_nameexist(){
+ local uname="$(STRING "$1")"
+ local UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+ [ -f "$user_db" -a -r "$user_db" ] \
+ && while read -r UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE; do
+ [ "$EXPIRE" -gt "$_DATE" -a "$UNAME" = "$uname" ] && return 0
+ done <"$user_db"
+ return 1
+}
+
+user_emailexist(){
+ local email="$(STRING "$1")"
+ local UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+ [ -f "$user_db" -a -r "$user_db" ] \
+ && while read -r UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE; do
+ [ "$EXPIRE" -gt "$_DATE" -a "$EMAIL" = "$email" ] && return 0
+ done <"$user_db"
+ return 1
+}
+
+user_pwhash(){
+ local salt="$1" secret="$2" hash
+ hash="$(printf '%s\n%s\n' "$secret" "$salt" |sha256sum)"
+ printf '%s\n' "${hash%% *}"
+}
+
+user_register_email() { # TRANSLATION
+ "$SENDMAIL" -t -f "$MAILFROM" <<-EOF
+ From: ${MAILFROM}
+ To: ${email}
+ Subject: Your account registration at ${HTTP_HOST%:*}
+
+ Someone tried to sign up for a user account using this email address.
+
+ You can activate your account using this link:
+
+ ${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")
+
+ This registration link will expire after $((USER_CONFIRMEXPIRE / 3600)) hours.
+
+ If you did not request an account at ${HTTP_HOST%:*}, then someone else
+ probably entered your email address by accident. In this case you shoud
+ simply ignore this message and we will remove your email address from
+ our database within the next day.
+
+ This is an automatic email. Any direct reply will not be received.
+ Your Account Registration Robot.
+ EOF
+}
+
+user_register(){
+ # reserve account, send registration mail
+ # preliminary uid, expiration, signature
+ local uid="$(timeid)"
+ local uname="$(POST uname |user_checkname)"
+ local email="$(POST email |user_checkemail)"
+ local pwsalt="$(randomid)"
+ local pw="$(POST pw |grep -m1 -xE '.{6,}' )" pwconfirm="$(POST pwconfirm)"
+
+ if [ "$USER_REGISTRATION" != true -a -s "$user_db" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_REGISTRATION_DISABLED"
+ fi
+
+ if [ "$USER_REQUIREEMAIL" = true ]; then
+ if [ ! "$email" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_INVALID"
+ elif user_emailexist "$email"; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_EXISTS"
+ elif new_user "$uid" status=pending email="$email" expire="$((_DATE + USER_CONFIRMEXPIRE))"; then
+ debug "Sending Activation Link:" \
+ "${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
+ user_register_email
+ REDIRECT "${_BASE}${PATH_INFO}#USER_REGISTER_CONFIRM"
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_USER_NOLOCK"
+ fi
+
+ elif [ "$USER_REQUIREEMAIL" != true ]; then
+ if [ ! "$uname" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_UNAME_INVALID"
+ elif user_nameexist "$uname"; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_UNAME_EXISTS"
+ elif [ ! "$pw" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_PW_EMPTYTOOSHORT"
+ elif [ "$pw" != "$pwconfirm" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_PW_MISMATCH"
+ elif new_user "$uid" uname="$uname" status=active email="$email" password="$pw" expire="$((_DATE + USER_ACCOUNTEXPIRE))"; then
+ SESSION_COOKIE new
+ SESSION_BIND user_id "$uid"
+
+ if [ "$USER_ACCOUNTPAGE" ]; then
+ REDIRECT "${USER_ACCOUNTPAGE}"
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#USER_REGISTER_CONFIRM"
+ fi
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_USER_NOLOCK"
+ fi
+ fi
+}
+
+user_invite_email(){ # TRANSLATION
+ "$SENDMAIL" -t -f "$MAILFROM" <<-EOF
+ From: ${MAILFROM}
+ To: ${email}
+ Subject: You have been invited to ${HTTP_HOST%:*}
+
+ ${USER_NAME:-Someone} has offered an invitation to this email address.
+
+ ${message}
+
+ You can create your account using this link:
+
+ ${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")
+
+ This registration link will expire after $((USER_CONFIRMEXPIRE / 3600)) hours.
+
+ If you do not know what this is about, then someone else probably
+ entered your email address by accident. In this case you shoud
+ simply ignore this message and we will remove your email address from
+ our database within the next day.
+
+ This is an automatic email. Any direct reply will not be received.
+ Your Account Registration Robot.
+ EOF
+}
+
+user_invite(){
+ local uid="$(timeid)"
+ local email="$(POST email |user_checkemail)"
+ local message="$(POST message)"
+
+ if [ ! "$email" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_INVALID"
+ elif user_emailexist "$email"; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_EXISTS"
+ elif new_user "$uid" status=pending email="$email" expire="$((_DATE + USER_CONFIRMEXPIRE))"; then
+ debug "Sending Invitation Link:" \
+ "${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
+ user_invite_email
+ REDIRECT "${_BASE}${PATH_INFO}#USER_REGISTER_CONFIRM"
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_USER_NOLOCK"
+ fi
+}
+
+user_confirm(){
+ # enable account
+ eval "$LOCAL_USER"
+ local uid="$(POST uid |checkid || printf invalid)"
+ local signature="$(POST signature)"
+ local uname="$(POST uname |user_checkname)"
+ local pwsalt="$(randomid)"
+ local pw="$(POST pw |grep -m1 -xE '.{6,}' )" pwconfirm="$(POST pwconfirm)"
+
+ read_user "${uid}"
+
+ if [ "$signature" != "$(session_mac "$uid")" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}?${QUERY_STRING}#ERROR_LINK_INVALID"
+ elif [ ! "$uname" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}?${QUERY_STRING}#ERROR_UNAME_INVALID"
+ elif user_nameexist "$uname"; then
+ REDIRECT "${_BASE}${PATH_INFO}?${QUERY_STRING}#ERROR_UNAME_EXISTS"
+ elif [ ! "$pw" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}?${QUERY_STRING}#ERROR_PW_EMPTYTOOSHORT"
+ elif [ "$pw" != "$pwconfirm" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}?${QUERY_STRING}#ERROR_PW_MISMATCH"
+ elif [ "$USER_STATUS" != pending -o \! "$USER_EXPIRE" -gt "$_DATE" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}?${QUERY_STRING}#ERROR_LINK_INVALID"
+ elif update_user "$USER_ID" uname="$uname" status=active password="$pw"; then
+ SESSION_COOKIE new
+ SESSION_BIND user_id "$USER_ID"
+ if [ "$USER_ACCOUNTPAGE" ]; then
+ REDIRECT "${USER_ACCOUNTPAGE}"
+ else
+ REDIRECT "${_BASE}${PATH_INFO}?user_register=confirm#USER_REGISTER_CONFIRM"
+ fi
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_USER_NOLOCK"
+ fi
+}
+
+user_login(){
+ # set cookie
+ # keep logged in - device cookie?
+ # initialize new session!
+ local UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+ local uname="$(POST uname |STRING)" pw="$(POST pw)"
+
+ [ -f "$user_db" -a -r "$user_db" ] \
+ && while read -r UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE; do
+ if [ "$UNAME" = "$uname" -o "$EMAIL" = "$uname" ]; then
+ if [ "$STATUS" = active -a "$EXPIRE" -gt "$_DATE" -a "$PWHASH" = "$(user_pwhash "$PWSALT" "$pw")" ]; then
+ SESSION_COOKIE new
+ SESSION_BIND user_id "$UID_"
+ REDIRECT "${_BASE}${PATH_INFO}#USER_LOGGED_IN"
+ fi
+ fi
+ done <"$user_db"
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_INVALID_LOGIN"
+}
+
+user_logout(){
+ # destroy cookie, destroy session
+ # keep device cookie
+ new_session
+ SESSION_COOKIE new
+ SET_COOKIE 0 user_id="" Path="/${_BASE#/}" SameSite=Strict HttpOnly
+ REDIRECT "${_BASE}${PATH_INFO}#USER_LOGGED_OUT"
+}
+
+user_update(){
+ # todo: username update, email update / email confirm
+ local UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+ # local uname="$(POST uname |STRING)"
+ local uid oldpw pw pwconfirm
+
+ uid="$(POST uid)"
+ oldpw="$(POST oldpw)"
+ pw="$(POST pw |grep -m1 -xE '.{6,}')"
+ pwconfirm="$(POST pwconfirm)"
+
+
+ read -r UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE <<-EOF
+ $(grep "^${uid} " "$user_db")
+ EOF
+
+ if [ "$UID_" = "$USER_ID" -a "$PWHASH" = "$(user_pwhash "$PWSALT" "$oldpw")" ]; then
+ if [ "$pw" -a "$pw" = "$pwconfirm" ]; then
+ update_user "${uid}" password="$pw"
+ REDIRECT "${_BASE}${PATH_INFO}#UPDATE_SUCCESS"
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_PW_MISMATCH"
+ fi
+ elif [ "$UID_" = "$USER_ID" ]; then
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_INVALID_AUTH_PASSWORD"
+ else
+ REDIRECT "${_BASE}${PATH_INFO}#ERROR_NOTLOGGEDIN"
+ fi
+}
+
+user_recover(){
+ # send recover link
+ :
+}
+user_disable(){
+ :
+}
+
+read_user "$(SESSION_VAR user_id)"
+[ "$USER_STATUS" -a "$USER_STATUS" != active ] && eval $UNSET_USER
+
+[ "$REQUEST_METHOD" = POST ] && case "$(POST action)" in
+ user_register) user_register ;;
+ user_confirm) user_confirm ;;
+ user_invite) user_invite ;;
+ user_login) user_login ;;
+ user_logout) user_logout ;;
+ user_update) user_update ;;
+ user_recover)
+ :;;
+ user_disable)
+ :;;
+esac
+
+export USER_ID USER_NAME USER_STATUS USER_EMAIL USER_PWSALT USER_PWHASH \
+ USER_EXPIRE USER_DEVICES USER_FUTUREUSE
+
+
+w_user_update(){
+ if [ ! "$USER_ID" ]; then
+ cat <<-EOF
+ [div #user_update .nouser
+ This page can only be used by registered users
+ ]
+ EOF
+ else
+ cat <<-EOF
+ [form #user_update method=POST
+ [hidden "uid" "$USER_ID"]
+ [p .username Logged in as $USER_NAME]
+ [input type=password name=oldpw placeholder="Current Passphrase"]
+ [input type=password name=pw placeholder="New Passphrase" pattern=".{6,}"]
+ [input type=password name=pwconfirm placeholder="Confirm New Passphrase" pattern=".{6,}"]
+ [submit "action" "user_update" Update Passphrase]
+ ]
+ EOF
+ fi
+}
+
+w_user_register_disabled(){ # TRANSLATION
+ cat <<-EOF
+ [div #user_register .disabled
+ User Registration is disabled.
+ ]
+ EOF
+}
+w_user_register_sendmail(){ # TRANSLATION
+ cat <<-EOF
+ [form #user_register .registeremail method=POST
+ [p We will send an activation mail to your email address.
+ You can continue the signup process when you click on the
+ activation link in this email.]
+ [input type=email name=email placeholder="Email"]
+ [submit "action" "user_register" Sign Up]
+ ]
+ EOF
+}
+w_user_register_direct(){ # TRANSLATION
+ cat <<-EOF
+ [form #user_register .registername method=POST
+ [input name=uname placeholder="Choose Username" tooltip="Your username may contain any character but the @ sign. It must be at least 3 characters long, and it must start with a letter." pattern="^\[\\\\p{L}\]\[\\\\p{L}0-9 -~\]{2,127}$" autocomplete=off]
+ [input type=password name=pw placeholder="Choose Passphrase" pattern=".{6,}"]
+ [input type=password name=pwconfirm placeholder="Confirm Passphrase" pattern=".{6,}"]
+ [submit "action" "user_register" Sign Up]
+ ]
+ EOF
+}
+
+w_user_register(){
+ if [ "$(GET user_confirm)" ]; then
+ w_user_confirm
+ elif [ "$USER_REGISTRATION" != true -a -s "$user_db" ]; then
+ w_user_register_disabled
+ elif [ "$USER_REQUIREEMAIL" = true ]; then
+ w_user_register_sendmail
+ elif [ "$USER_REQUIREEMAIL" != true ]; then
+ w_user_register_direct
+ fi
+}
+
+w_user_confirm_proceed(){ # TRANSLATION
+ cat <<-EOF
+ [form #user_confirm method=POST
+ [input type=hidden name=uid value="${uid}"]
+ [input type=hidden name=signature value="${signature}"]
+ $([ "$EMAIL" != '\' ] && printf \
+ '[input disabled=disabled value="%s" placeholder="Email"]' "$(UNSTRING "$EMAIL" |HTML)"
+ )
+ [input name=uname placeholder="Choose Username" tooltip="Your username may contain any character but the @ sign. It must be at least 3 characters long, and it must start with a letter." pattern="^\[\\\\p{L}\]\[\\\\p{L}0-9 -~\]{2,127}$" autocomplete=off]
+ [input type=password name=pw placeholder="Choose Passphrase" pattern=".{6,}"]
+ [input type=password name=pwconfirm placeholder="Confirm Passphrase" pattern=".{6,}"]
+ [submit "action" "user_confirm" Finish Registration]
+ ]
+ EOF
+}
+w_user_confirm_expired(){ # TRANSLATION
+ cat <<-EOF
+ [div #user_confirm .expired
+ [p This activation link is not valid anymore.]
+ ]
+ EOF
+}
+w_user_confirm_invalid(){ # TRANSLATION
+ cat <<-EOF
+ [div #user_confirm .invalid
+ [p This activation link is invalid. Make sure you copied the whole activation link from your email and be careful not to include any line breaks.]
+ ]
+ EOF
+}
+
+w_user_confirm(){
+ local UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE
+ local user_confirm="$(GET user_confirm)"
+ local uid="${user_confirm% *}" signature="${user_confirm#* }"
+
+ if [ "$signature" = "$(session_mac "$uid")" ]; then
+ read -r UID_ UNAME STATUS EMAIL PWSALT PWHASH EXPIRE DEVICES FUTUREUSE <<-EOF
+ $(grep "^${uid} " "$user_db")
+ EOF
+ if [ "$STATUS" = pending -a "$EXPIRE" -gt "$_DATE" ]; then
+ w_user_confirm_proceed
+ else
+ w_user_confirm_expired
+ fi
+ else
+ w_user_confirm_invalid
+ fi
+}
+
+w_user_invite_email(){ # TRANSLATION
+ cat <<-EOF
+ [form #user_invite method=POST
+ [input placeholder="Email Recipient" name=email autocomplete=off]
+ [textarea name="message" placeholder="Message to recipient" . ]
+ [submit "action" "user_invite" Send Invitation]
+ ]
+ EOF
+}
+w_user_invite_link(){ # TRANSLATION
+ cat <<-EOF
+ [div #user_invite .link
+ [p An anonymous user account has been set up. Send the following link to the intended user, so they may claim their account. The link will remain valid for $((USER_CONFIRMEXPIRE / 3600)) hours.]
+ [a href="$(HTML "$invlink")" . $(HTML "$invlink")]
+
+ [p [a href="#" . Set up another account]]
+ ]
+ EOF
+}
+w_user_invite_deny(){ # TRANSLATION
+ cat <<-EOF
+ [div #user_invite .notallowed
+ Only registered users may send an invitation to another user.
+ ]
+ EOF
+}
+
+w_user_invite(){
+ local uid invlink
+
+ if [ "$(GET user_confirm)" ]; then
+ w_user_confirm
+ elif [ "$USER_ID" -a "$SENDMAIL" ]; then
+ w_user_invite_email
+ elif [ "$USER_ID" ]; then
+ uid="$(timeid)"
+ new_user "$uid" status=pending expire="$((_DATE + USER_CONFIRMEXPIRE))"
+ invlink="${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
+ debug "New Invitation Link: $invlink"
+ w_user_invite_link
+ else
+ w_user_invite_deny
+ fi
+}
+
+w_user_login_logon(){ # TRANSLATION
+ cat <<-EOF
+ [form #user_login .login method=POST
+ [input name=uname placeholder="Username or Email"]
+ [input type=password name=pw placeholder="Passphrase"]
+ [submit "action" "user_login" Login]
+ ]
+ EOF
+}
+w_user_login_logoff(){ # TRANSLATION
+ cat <<-EOF
+ [form #user_login .logout method=POST
+ [p Logged in as [span . $(HTML ${USER_NAME})]]
+ [submit "action" "user_logout" Logout]
+ ]
+ EOF
+}
+
+w_user_login(){
+ if [ ! "$USER_ID" ]; then
+ w_user_login_logon
+ elif [ "$USER_ID" ]; then
+ w_user_login_logoff
+ fi
+}
projects / rigidfind / commitdiff