X-Git-Url: https://git.plutz.net/?p=cgilite;a=blobdiff_plain;f=file.sh;h=6f956dfeb5989a6b2542534d78134bc4633217de;hp=06f28d02f5640abfbfd560641348e8c8e8cd6e22;hb=HEAD;hpb=595fbc514d410ccdd46a81b8736d3711ac1ca7fe diff --git a/file.sh b/file.sh index 06f28d0..c66b17d 100755 --- a/file.sh +++ b/file.sh @@ -1,82 +1,105 @@ -#!/bin/zsh +#!/bin/sh -# Copyright 2016 - 2018 Paul Hänsch -# -# This file is part of cgilite. +# Copyright 2016 - 2024 Paul Hänsch # -# cgilite is free software: you can redistribute it and/or modify -# it under the terms of the GNU Affero General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. +# 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. # -# cgilite is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU Affero General Public License for more details. -# -# You should have received a copy of the GNU Affero General Public License -# along with cgilite. If not, see . +# 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 - html|html) printf 'text/html';; css) printf 'text/css';; - js) printf 'text/javascript';; - txt) printf 'text/plain';; - sh) printf 'text/shellscript';; + 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';; - gif) printf 'image/gif';; + tex) printf 'text/x-tex';; + txt) printf 'text/plain';; + short) printf 'text/prs.shorthand';; + ts) printf 'video/MP2T';; webm) printf 'video/webm';; - mp4) printf 'video/mp4';; - ogg) printf 'audio/ogg';; xml) printf 'application/xml';; *) printf 'application/octet-stream';; esac } FILE(){ - unset range file_size file_date http_date cachedate - file="$1" + 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' - exit 0 + return 0 elif ! [ -r "$file" ]; then printf 'Content-Length: 0\r\nStatus: 403 Forbidden\r\n\r\n' - exit 0 + return 0 fi - file_size="$(stat -Lc %s "$file")" - file_date="$(stat -Lc %Y "$file")" - http_date="$(date -uRd @$file_date)" - http_date="${http_date%+0000}GMT" + 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="$( # Parse the allowable date formats from Section 3.3.1 of # https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html - HEADER If-Modified-Since \ - | sed -r 's;^[^ ]+, ([0-9]{2}) (...) ([0-9]{4}) (..:..:..) GMT$;\3-\2-\1 \4;; + # 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 -0 date +%s -ud 2>&- + | xargs -r0 date +%s -ud 2>&- )" - range="$(HEADER Range |sed -nr 's;^bytes=([0-9]+-[0-9]*|-[0-9]+)$;\1;p;q;')" + range="${HTTP_RANGE#bytes=}" case "$range" in - *-) 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%-*}-$((file_size - 1))";; + *[!0-9]*-*|*-*[!0-9]*) + range="" + ;; + *-) + range="${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 "$cachedate" ] 2>&-; then @@ -91,7 +114,7 @@ FILE(){ Status "200 OK" \ Accept-Ranges bytes \ Last-Modified "$http_date" \ - Content-Type $(file_type "$file") \ + Content-Type "${mime:-$(file_type "$file")}" \ Content-Length $file_size printf '\r\n' @@ -102,14 +125,14 @@ FILE(){ Status "206 Partial Content" \ Accept-Ranges bytes \ Last-Modified "$http_date" \ - Content-Type $(file_type "$file") \ + 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#*-} - ${range%-*} + 1))" + | head -c "$((${range#*-} - ${range%-*} + 1))" elif [ "${range%-*}" -gt "${range#*-}" ]; then printf '%s: %s\r\n' \