From 9ffde1819707b7a9b5ef18f15a9a5819c876f253 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Paul=20H=C3=A4nsch?= Date: Mon, 4 Mar 2024 13:03:02 +0100 Subject: [PATCH 1/1] Squashed 'cgilite/' content from commit 426dac5 git-subtree-dir: cgilite git-subtree-split: 426dac52b5648fea4854fb141452d113b5c2251a --- .gitignore | 3 + cgilite.sh | 356 +++++++++++++++++++++ common.css | 191 ++++++++++++ db23.sh | 114 +++++++ file.sh | 144 +++++++++ html-sh.sed | 83 +++++ json.sh | 360 +++++++++++++++++++++ logging.sh | 32 ++ markdown.awk | 866 +++++++++++++++++++++++++++++++++++++++++++++++++++ session.sh | 152 +++++++++ storage.sh | 188 +++++++++++ users.sh | 661 +++++++++++++++++++++++++++++++++++++++ 12 files changed, 3150 insertions(+) create mode 100644 .gitignore create mode 100755 cgilite.sh create mode 100644 common.css create mode 100755 db23.sh create mode 100755 file.sh create mode 100755 html-sh.sed create mode 100755 json.sh create mode 100755 logging.sh create mode 100755 markdown.awk create mode 100755 session.sh create mode 100755 storage.sh create mode 100755 users.sh diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..5c9950a --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +cgilite +serverkey +users.db diff --git a/cgilite.sh b/cgilite.sh new file mode 100755 index 0000000..b2467c3 --- /dev/null +++ b/cgilite.sh @@ -0,0 +1,356 @@ +#!/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=" " +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 +} diff --git a/common.css b/common.css new file mode 100644 index 0000000..30c3942 --- /dev/null +++ b/common.css @@ -0,0 +1,191 @@ +/* ======= 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 ======= */ diff --git a/db23.sh b/db23.sh new file mode 100755 index 0000000..e8a0d64 --- /dev/null +++ b/db23.sh @@ -0,0 +1,114 @@ +#!/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 +} diff --git a/file.sh b/file.sh new file mode 100755 index 0000000..c66b17d --- /dev/null +++ b/file.sh @@ -0,0 +1,144 @@ +#!/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 +} diff --git a/html-sh.sed b/html-sh.sed new file mode 100755 index 0000000..1a0f2b4 --- /dev/null +++ b/html-sh.sed @@ -0,0 +1,83 @@ +#!/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;\[!([^]\[]*)\];;g; +s;\[!--([^]\[]*)--\];;g; + +:tags +s;\[([^]\[< \t]+)([^]\[]*)\];<\1>\2;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]*)\[([^]\[< \t\n]+)([^\n]*);\1<\2>\3\n; +t tagopen; +G; h; s;^[^\n]*\n+;;; x; s;\n.*$;;; + +:attribs +s;class="([^>]+)>[ \t]*\.([^< \t]+);class="\2 \1>;g; t attribs; +s;(<[^/][^>]*)>[ \t]*\.([^< \t]+);\1 class="\2">;g; +s;(<[^/][^>]*)>[ \t]*#([^< \t]+);\1 id="\2">;g; +s;(<[^/][^>]*)>[ \t]*([^ \t=<]+=("[^"]*"|'[^']*'|[^< \t]*));\1 \2>;g; +t attribs; +s;(]+ )?type=(radio|"radio"|'radio')( [^>]+)?)>[ \t]*(checked|selected);\1 checked="checked">;g; +s;(]+ )?type=(checkbox|"checkbox"|'checkbox')( [^>]+)?)>[ \t]*(checked|selected);\1 checked="checked">;g; +s;(]+)?)>[ \t]*(checked|selected);\1 selected="selected">;g; +s;(]+)?)>[ \t]*multiple;\1 multiple="multiple">;g; +t attribs; +s;(<[^/][^>]*>)[ \t]*\.[ \t];\1;g; + +s;(<[^/][^>]*>)[ \t]*;\1;g; +# s;(<[^/][^>]*)>[ \t]*]+>;\1/>;g; +s;(<(br|hr|img|input|link|meta|area|base|col|command|embed|keygen|param|source|track|wbr)[^>]*)>[ \t]*;\1>;g; + +s;;|<\?([^\?]|\?[^>])*\?>|]*>|])*\]\]>|<\/[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(/^$/, "", href); } + if ( match(title, /^".*"$/) ) { 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 "" \ + inline( text ) "" 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 "" inline(text) "" inline( substr( line, len + 1) ); + } else if ( rl_href[id] ) { + return "" inline(text) "" 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); } + 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 "\""" 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 "\""" \ + inline( substr( line, len + 1) ); + } else if ( rl_href[id] ) { + return "\""" \ + 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 "" inline( substr( line, 3, len - 4 ) ) "" inline( substr( line, len + 1 ) ); + + # ^superscript^ (pandoc) + } else if ( match(line, /^\^([^[:space:]^]|\\[ ^])+\^/) ) { + len = RLENGTH; + return "" inline( substr( line, 2, len - 2 ) ) "" inline( substr( line, len + 1 ) ); + + # ~subscript~ (pandoc) + } else if ( match(line, /^~([^[:space:]~]|\\[ ~])+~/) ) { + len = RLENGTH; + return "" inline( substr( line, 2, len - 2 ) ) "" 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 "))__$") ) { + len = RLENGTH; + return "" inline( substr( line, 3, len - 4 ) ) "" inline( substr( line, len + 1 ) ); + + # __strong__ + } else if ( match(line, "^__(([^_[:space:]]|" ieu ")|([^_[:space:]]|" ieu ")(" nu "|" ieu ")*([^_[:space:]]|" ieu "))__[[:space:][:punct:]]") ) { + len = RLENGTH; + return "" inline( substr( line, 3, len - 5 ) ) "" inline( substr( line, len) ); + + # **strong** + } else if ( match(line, "^\\*\\*(([^\\*[:space:]]|" iea ")|([^\\*[:space:]]|" iea ")(" na "|" iea ")*([^\\*[:space:]]|" iea "))\\*\\*") ) { + len = RLENGTH; + return "" inline( substr( line, 3, len - 4 ) ) "" inline( substr( line, len + 1 ) ); + + # _em_$ + } else if ( match(line, "^_(([^_[:space:]]|" isu ")|([^_[:space:]]|" isu ")(" nu "|" isu ")*([^_[:space:]]|" isu "))_$") ) { + len = RLENGTH; + return "" inline( substr( line, 2, len - 2 ) ) "" inline( substr( line, len + 1 ) ); + + # _em_ + } else if ( match(line, "^_(([^_[:space:]]|" isu ")|([^_[:space:]]|" isu ")(" nu "|" isu ")*([^_[:space:]]|" isu "))_[[:space:][:punct:]]") ) { + len = RLENGTH; + return "" inline( substr( line, 2, len - 3 ) ) "" inline( substr( line, len ) ); + + # *em* + } else if ( match(line, "^\\*(([^\\*[:space:]]|" isa ")|([^\\*[:space:]]|" isa ")(" na "|" isa ")*([^\\*[:space:]]|" isa "))\\*") ) { + len = RLENGTH; + return "" inline( substr( line, 2, len - 2 ) ) "" inline( substr( line, len + 1 ) ); + + # Literal HTML entities + } else if ( match( line, /^&([a-zA-Z]{2,32}|#[0-9]{1,7}|#[xX][0-9a-fA-F]{1,6});/) ) { + len = RLENGTH; + return substr( line, 1, len ) inline(substr(line, len + 1)); + + # Arrows + } else if ( line ~ /^-->( |$)/) { # 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})$/); split( substr(hstack, RSTART), HL); + + for ( n = hlvl; n <= 6; n++ ) { sec = sec (HL[n]?"":""); } + HL[hlvl]++; for ( n = hlvl + 1; n <= 6; n++) { HL[n] = 0;} + + hid = ""; for ( n = 2; n <= blvl; n++) { hid = hid BL[n] "/"; } + hid = hid HL[1]; for ( n = 2; n <= hlvl; n++) { hid = hid "." HL[n] ; } + hid = hid ":" URL(htxt, 1); + + sub(/([0-9]+( [0-9]+){5})$/, "", hstack); + hstack = hstack HL[1] " " HL[2] " " HL[3] " " HL[4] " " HL[5] " " HL[6]; + + return sec "
" \ + "" inline( htxt ) \ + "" \ + "\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})$/); split( substr(hstack, RSTART), HL); + sec = ""; for ( n = 1; n <= 6; n++ ) { sec = sec (HL[n]?"
":""); } + + sub("( +[0-9]+){6} *$", "", 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 $5 + } else if ( AllowHTML && match( block, /(^|\n) ? ? ?(|$)|<\?([^\?]|\?[^>])*(\?>|$)|]*(>|$)|])*(\]\]>|$))/) ) { + len = RLENGTH; st = RSTART; + return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len)); + + # HTML #6 + } else if ( AllowHTML && match( tolower(block), /(^|\n) ? ? ?<\/?(address|article|aside|base|basefont|blockquote|body|caption|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption|figure|footer|form|frame|frameset|h[123456]|head|header|hr|html|iframe|legend|li|link|main|menu|menuitem|nav|noframes|ol|optgroup|option|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr|track|ul)([[:space:]\n>]|\/>)([^\n]|\n[ \t]*[^\n])*(\n[[:space:]]*\n|$)/) ) { + 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$/, "", text ) + return "
" text "
\n\n" _block( substr(block, st + len) ); + + # Pipe Tables (pandoc / php md / gfm ) + } else if ( match(block, "^((\\|)?([^\n]+\\|)+[^\n]+(\\|)?)\n" \ + "((\\|)?(:?-+:?[\\|+])+:?-+:?(\\|)?)\n" \ + "((\\|)?([^\n]+\\|)+[^\n]+(\\|)?(\n|$))+" ) ) { + 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 = "\n" + for (cnt = 1; cnt < cols; cnt++) + ttext = ttext "" inline(tarray[cnt]) "" + ttext = ttext "\n\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 "" + for (cnt = 1; cnt < cols; cnt++) + ttext = ttext "" inline(tarray[cnt]) "" + ttext = ttext "\n" + } + return "" ttext "
\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|$)/) + 1 ); + for (cnt = 1; cnt <= cols; cnt++) + tarray[cnt] = tarray[cnt] "\n" tread[cnt]; + } + + ttext = "\n" + for (cnt = 1; cnt <= cols; cnt++) + ttext = ttext "" _nblock(tarray[cnt]) "" + ttext = ttext "\n" + } + + # table body + block = substr(block, match(block, /(\n|$)/) + 1 ); + ttext = ttext "\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|$)/) + 1 ); + + ttext = ttext "" + for (cnt = 1; cnt <= cols; cnt++) + ttext = ttext "" _nblock(tarray[cnt]) "" + ttext = ttext "\n" + } + return "" ttext "
\n" _nblock(block); + + # Line Blocks (pandoc) + } else if ( match(block, /^\| [^\n]*(\n|$)(\| [^\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$/, "", text); + text = inline(text); gsub(/\n/, "
\n", text); + + return "
" text "
\n" _block( substr( block, len + 1) ); + + # Indented Code Block + } else if ( match(block, /^( |\t)( *\t*[^ \t\n]+ *\t*)+(\n|$)(( |\t)[^\n]+(\n|$)|[ \t]*(\n|$))*/) ) { + len = RLENGTH; st = RSTART; + code = substr(block, 1, len); + gsub(/(^|\n)( |\t)/, "\n", code); + gsub(/^\n|\n+$/, "", code); + return "
" HTML( code ) "
\n" \ + _block( substr( block, len + 1 ) ); + + # Fenced Divs (pandoc, custom) + } else if ( match( block, /^(:::+)/ ) ) { + guard = substr( block, 1, RLENGTH ); + code = block; sub(/^[^\n]+\n/, "", code); + attrib = gensub(/^:::+[ \t]*\{?[ \t]*([^\}\n]*)\}?[ \t]*\n.*$/, "\\1", 1, block); + gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); + gsub(/(^ | $)/, "", attrib); + if ( match(code, "(^|\n)" guard "+(\n|$)" ) ) { + len = RLENGTH; st = RSTART; + return "
" _nblock( substr(code, 1, st - 1) ) "
\n" \ + _block( substr( code, st + len ) ); + } else { + match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match( block, /$/ ); + len = RLENGTH; st = RSTART; + return "

" inline( substr(block, 1, st - 1) ) "

\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 "
" HTML( substr(code, 1, st - 1) ) "
\n" \ + _block( substr( code, st + len ) ); + } else { + match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match( block, /$/ ); + len = RLENGTH; st = RSTART; + return "

" inline( substr(block, 1, st - 1) ) "

\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.*)?$/, "", text); + + return headline( n, text, 0 ) _block( substr( block, len + 1) ); + + # block images (wrapped in
) + } else if ( match(block, "^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n|$)") ) { + 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(/^$/, "", href); } + if ( match(title, /^".*"$/) ) { 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 "
" \ + "\""" \ + (title?"
" inline(title) "
":"") \ + "
\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 "
" \ + "\""" \ + "
" inline(rl_title[id]) "
" \ + "
\n\n" \ + _block( substr( block, len + 1) ); + } else if ( rl_href[id] ) { + return "
" \ + "\""" \ + "
\n\n" \ + _block( substr( block, len + 1) ); + } else { + return "

" HTML(substr(block, 1, len)) "

\n" _block( substr(block, len + 1) ); + } + + # Macros (standalone <> 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 "" HTML(text) "" _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|$))*)+" \ + )) { + list = substr( block, 1, RLENGTH); block = substr( block, RLENGTH + 1); + return "\n
\n" _dlist( list ) "
\n" _block( block ); + + # Unordered list types + } else if ( text = _startlist( block, "ul", "-", "([+*•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) { + return text; + } else if ( text = _startlist( block, "ul", "\\+", "([-*•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) { + return text; + } else if ( text = _startlist( block, "ul", "\\*", "([-+•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) { + return text; + } else if ( text = _startlist( block, "ul", "•", "([-+*]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) { + return text; + + # Ordered list types + } else if ( text = _startlist( block, "ol", "[0-9]+\\.", "([-+*•]|#\\.|[0-9]+\\)|#\\))") ) { + return text; + } else if ( text = _startlist( block, "ol", "[0-9]+\\)", "([-+*•]|[0-9]+\\.|#\\.|#\\))") ) { + return text; + } else if ( text = _startlist( block, "ol", "#\\.", "([-+*•]|[0-9]+\\.|[0-9]+\\)|#\\))") ) { + return text; + } else if ( text = _startlist( block, "ol", "#\\)", "([-+*•]|[0-9]+\\.|#\\.|[0-9]+\\))") ) { + return text; + + # Split paragraphs + } else if ( match( block, /(^|\n)[[:space:]]*(\n|$)/) ) { + 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)) "
\n" _block(substr(block, st + len)); + + # Plain paragraph + } else { + return "

" inline(block) "

\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 ) "\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, /^\[ \]/ ) ? "
  • " : \ + match( text, /^\[-\]/ ) ? "
  • " : \ + match( text, /^\[\/\]/ ) ? "
  • " : \ + match( text, /^\[\?\]/ ) ? "
  • " : \ + match( text, /^\[[xX]\]/) ? "
  • " : "
  • "; + sub(/^\[[-? \/xX]\]/, "", text); + + text = _nblock( text ); + if ( ! p && match( text, "^

    (]|\n$" )) + gsub( "(^

    |

    \n$)", "", text); + + return task text "
    • \n" _list(block, mark, p); +} + +function _dlist (block, LOCAL, len, st, text, indent, p) { + if (match( block, "^([ \t]*\n)*[^:\n \t][^\n]+\n" )) { + len = RLENGTH; text = substr(block, 1, len); + gsub( "(^\n*|\n*$)", "", text ); + return "
    " inline( text ) "
    \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, "^

    (]|\n$" )) + gsub( "(^

    |

    \n$)", "", text); + + return "
    " text "
    \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 (underline) + isu = "__([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])__" # inner (underline) + iea = "\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*" # inner (asterisk) + isa = "\\*\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*\\*" # inner (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|$)/ + while ( match(f, re_reflink ) ) { + rl_id = gensub( re_reflink, "\\2", 1, substr(f, RSTART, RLENGTH) ); + rl_href[rl_id] = gensub( re_reflink, "\\3", 1, substr(f, RSTART, RLENGTH) ); + rl_title[rl_id] = gensub( re_reflink, "\\5", 1, substr(f, RSTART, RLENGTH) ); + f = substr(f, RSTART + RLENGTH); + rl_title[rl_id] = substr( rl_title[rl_id], 2, length(rl_title[rl_id]) - 2 ); + if ( rl_href[rl_id] ~ /<.*>/ ) rl_href[rl_id] = substr( rl_href[rl_id], 2, length(rl_href[rl_id]) - 2 ); + } + # Clear reflinks from File + while( gsub(re_reflink, "\n", file ) ); + # for (n in rl_href) { debug(n " | " rl_href[n] " | " rl_title[n] ); } + + # Run Block Processing -> The Actual Markdown! + printf "%s", _nblock( file ); +} diff --git a/session.sh b/session.sh new file mode 100755 index 0000000..c3a44e8 --- /dev/null +++ b/session.sh @@ -0,0 +1,152 @@ +#!/bin/sh + +# Copyright 2018 - 2022 Paul Hänsch +# +# Permission to use, copy, modify, and/or distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY +# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR +# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +[ -n "$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="/${_BASE#/}" SameSite=Strict HttpOnly +} + +update_session || new_session diff --git a/storage.sh b/storage.sh new file mode 100755 index 0000000..17ea0d0 --- /dev/null +++ b/storage.sh @@ -0,0 +1,188 @@ +#!/bin/sh + +# Copyright 2018 - 2021 Paul Hänsch +# +# Permission to use, copy, modify, and/or distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY +# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR +# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +[ -n "$include_storage" ] && return 0 +include_storage="$0" + +CR=" " +BR=' +' + +LOCK(){ + local lock="${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 +} diff --git a/users.sh b/users.sh new file mode 100755 index 0000000..c924789 --- /dev/null +++ b/users.sh @@ -0,0 +1,661 @@ +#!/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;' "${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 +} -- 2.39.2