Edit metadata

From a4481dc007ff202882b783ed4b36e03a8b4c1d05 Mon Sep 17 00:00:00 2001 From: B Stack Date: Mon, 1 Feb 2021 09:07:23 -0500 Subject: initial commit --- edit.cgi | 174 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100755 edit.cgi (limited to 'edit.cgi') diff --git a/edit.cgi b/edit.cgi new file mode 100755 index 0000000..d24657c --- /dev/null +++ b/edit.cgi @@ -0,0 +1,174 @@ +#!/bin/sh +# File: /mnt/public/www/cgi-bin/gallery/edit.cgi +# Author: bgstack15@gmail.com +# Startdate: 2021-01-24 +# SPDX-License-Identifier: GPL-3.0 +# Title: Edit gallery item +# Package: gallery +# Purpose: edit media title and description from webpage +# History: +# Usage: called by the links generated by the custom theme for sigal +# Reference: +# https://tutorial.eyehunts.com/html/html-textarea-input-placeholder-value-resize-readonly/ +# Improve: +# Documentation: +# needed parameters include id, image, and index. +# Dependencies: +# /etc/gallery-cgi.conf +# sigal.conf.py from indicated gallery_id +# apply.cgi +# Reverse dependencies: +# custom sigal theme that links to this when editing is enabled +# apply.cgi +DEBUG=0 +response=0 +export apply_link="apply.cgi" # web path to apply.cgi. Relative or absolute. +export show_image=1 # if 0, then show no image at all +export show_thumbnail=1 # if 1 then use thumbnail instead of full image +test -e /etc/gallery-cgi.conf && . /etc/gallery-cgi.conf +printf "%s\n\n" "Content-type: text/html" +echo "Edit metadata" +echo "" +echo "" +echo "

"
+test -n "${DEBUG}" && test ${DEBUG} -ge 3 1>/dev/null 2>&1 && {
+   env
+}
+
+# image is the image whose .md file needs 
+echo "${QUERY_STRING}" | grep -qE "(^|\&|\?)image=[^\&]+" && {
+   export image="$( echo "${QUERY_STRING}" | grep -oE "(^|\&|\?)image=[^\&]+" | awk -F'=' '{$1="";print;}' | sed -r -e 's:^ ::' )"
+}
+echo "${QUERY_STRING}" | grep -qE "(^|\&|\?)index=[^\&]+" && {
+   export index="$( echo "${QUERY_STRING}" | grep -oE "(^|\&|\?)index=[^\&]+" | awk -F'=' '{$1="";print;}' | sed -r -e 's:^ ::' )"
+}
+# find gallery_id from query string
+echo "${QUERY_STRING}" | grep -qE "(^|\&|\?)id=[^\&]+" && {
+   export gallery_id="$( echo "${QUERY_STRING}" | grep -oE "(^|\&|\?)id=[^\&]+" | awk -F'=' '{$1="";print;}' | sed -r -e 's:^ ::' )"
+}
+
+# dynamically load the config file from the gallery_id defined in gallery-cgi.conf
+eval export sigal_conf_py=\"\${"${gallery_id}"}\"/sigal.conf.py
+
+# due to a limitation in the static site generator, I cannot get the full path of the image in the request, so we must rely on HTTP_REFERER and the provided index value (album.index_url).
+test -z "${HTTP_REFERER}" && {
+   echo "Invalid request. Please use the [edit] links in the main application."
+   response=1
+}
+
+# learn edit_enabled from config file
+edit_enabled="$( awk -F'=' '$1 ~ /edit_enabled/ {print $2}' "${sigal_conf_py}" | sed -r -e "s/[\"']//g;" -e 's/^ //;' | tr '[A-Z]' '[a-z]' )"
+
+# between HTTP_REFERER and index we should be able to figure the actual path of the file whose metadata to edit
+# count how many directories up
+up_count="$( echo "${index}" | tr '/' '\n' | grep -cE '\.\.' )" ; up_count=$(( up_count + 1 ))
+urlrootpath="$( echo "${HTTP_REFERER}" | sed -r -e 's@://@:==@;' | tr '\/' '\n' | head --lines=-${up_count} | tr '\n' '\/' | sed -r -e 's@:==@:\/\/@' )"
+subpath="/$( echo "${HTTP_REFERER}" | sed -r -e 's@://@:==@;' | tr '\/' '\n' | tail --lines=${up_count} | tr '\n' '\/' | sed -r -e 's:\/+:\/:g;' -e 's:\/$::' )"
+# remove any quote marks
+filerootpath="$( awk -F'=' -v 'a="' -v "b='" "\$1 ~ /source/ && \$2 ~ /./ {gsub(\$2,a,\"\");gsub(\$2,b,\"\");print \$2;}" "${sigal_conf_py}" 2>&1 | sed -r -e "s/'//g;" -e 's/^ //;' )"
+
+# react to if image=folder
+if test "${image}" = "folder" ;
+then
+   dataurl="${urlrootpath%%/}${subpath}"
+   # will not bother support thumbnails for folders
+   datafile="${filerootpath%%/}${subpath}"
+   metadatafile="${filerootpath%%/}${subpath%%/}/index.md"
+else
+   dataurl="${urlrootpath%%/}${subpath%%/}/${image}"
+   thumburl="${urlrootpath%%/}${subpath%%/}/thumbnails/${image}"
+   datafile="${filerootpath%%/}${subpath%%/}/${image}"
+   metadatafile="${datafile%%.???}.md" # yes, hardcoded to the .3 ending
+fi
+
+test -n "${DEBUG}" && test ${DEBUG} -ge 2 1>/dev/null 2>&1 && {
+   echo "image=${image}"
+   echo "index=${index}"
+   echo "up_count=${up_count}"
+   echo "urlrootpath=${urlrootpath}"
+   echo "subpath=${subpath}"
+   echo "filerootpath=${filerootpath}"
+   echo "dataurl=${dataurl}"
+   echo "datafile=${datafile}"
+   echo "metadatafile=${metadatafile}"
+}
+
+# it is OK if the metadatafile does not exist, we will just make it if writeable.
+# but we will only bother to work with existing files
+test ! -e "${datafile}" && {
+   echo "That file does not exist. Please try again."
+   response=1
+   printf '%s' ""
+   exit ${response}
+}
+
+# check if writable
+if ! touch "${metadatafile}" ;
+then
+   echo "Need to determine what to do when not writeable."
+   response=1
+   export disabled="disabled" # or readonly, but disabled is clearer
+fi
+# check if edit_enabled
+if test "${edit_enabled}" = "false" ;
+then
+   export disabled="disabled"
+fi
+# get current values of metadatafile, which is markdown format
+title="$( awk -F':' '$1 ~ /Title/{$1="";print}' "${metadatafile}" 2>/dev/null | sed -r -e 's/^ *//;' )"
+thumbnail="$( awk -F':' '$1 ~ /Thumbnail/{$1="";print}' "${metadatafile}" 2>/dev/null | sed -r -e 's/^ *//;' )"
+author="$( awk -F':' '$1 ~ /Author/{$1="";print}' "${metadatafile}" 2>/dev/null | sed -r -e 's/^ *//;' )"
+# description is everything except the above tags.
+description="$( sed -r -e '/^(Title|Thumbnail|Author):/d' -e '/^\s*$/d' "${metadatafile}" )"
+test -n "${DEBUG}" && test ${DEBUG} -ge 1 1>/dev/null 2>&1 && {
+   echo "title: ${title}"
+   test "${image}" = "folder" && echo "thumbnail: ${thumbnail}"
+   echo "description: ${description}"
+}
+echo "

" + +# show image if enabled +test "${show_image}" = "1" && { + if test "${show_thumbnail}" = "1" ; + then + echo "

" + else + # show full image + echo "

" + fi + echo "
" +} + +# provide a placeholder if the title is empty for a directory +test -z "${title}" && test "${image}" = "folder" && { + placeholder="$( echo "${subpath}" | awk -F'/' '{print $NF}' )" + placeholdertag="placeholder=\"${placeholder}\"" +} + +# print the form +if test "${image}" = "folder" ; +then + echo "Folder: ${dataurl}" +else + echo "Image: ${dataurl}" +fi +echo "" +printf '%s' "" +exit ${response} -- cgit