158 lines
4.9 KiB
Bash
Executable File
158 lines
4.9 KiB
Bash
Executable File
#!/bin/sh
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# the file/folder db backend
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# since the backend provides both the add_post and fetch_post
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# functions the data path can be in whatever format you like
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# TODO: Post deletion, both on front and backend
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# NOTE: A post db path should always begin at $board_dir
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. ./globals.sh
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path_to_post() {
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post_id="$1"
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find "$board_dir" -maxdepth 4 -name "$post_id" -not -path '*/\.*'
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}
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create_post() {
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# This function takes strings correspoding to post
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# data and stores them in the boards folder in the
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# shi folder/file format
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local board="$1"
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local parent="$2"
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local user="$3"
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local title="$4"
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local content="$(echo "$5" | tr '\a' '\n')" # change the BEL characters back to newlines
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local image_name="$6"
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local image_content="$7"
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local post_id="$8"
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local post_type="$9"
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echo "Adding data for post with id $post_id" >> "$log_file"
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local post_directory="$board_dir/$board/$parent/$post_id" # where the post data will be stored
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post_directory="$(realpath "$post_directory")"
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echo "[file_db_backend.sh] board: $board" >> "$log_file"
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echo "[file_db_backend.sh] parent: $parent" >> "$log_file"
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echo "[file_db_backend.sh] user: $user" >> "$log_file"
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echo "[file_db_backend.sh] title: $title" >> "$log_file"
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echo "[file_db_backend.sh] content: $content" >> "$log_file"
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echo "[file_db_backend.sh] image_name: $image_name" >> "$log_file"
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# uncomment this if you want base64 spam vvv
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# echo "image_content: $image_content" >> "$log_file"
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# echo "image_content: $image_content" | head -c 50 >> "$log_file"
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echo "[file_db_backend.sh] post id: $post_id" >> "$log_file"
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echo "[file_db_backend.sh] post type: $post_type" >> "$log_file"
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if [ -z "$user" ]; then echo "[file_db_backend.sh] ERROR: no user" >> "$log_file"; return 1; fi
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if [ -z "$content" ]; then echo "[file_db_backend.sh] ERROR: no content"; return 1; fi
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if ! (mkdir -p "$post_directory")
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then
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echo "[file_db_backend.sh] ERROR: could not create post dir" >> "$log_file"
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return 1
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fi
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local image_path="$post_directory/$image_name"
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echo "$user" > "$post_directory/user"
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echo "$title" > "$post_directory/title"
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echo "$content" > "$post_directory/content"
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echo "$post_type" > "$post_directory/type"
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if [ -n "$image_name" ] && [ -n "$image_content" ]
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then
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echo "$image_content" | base64 -d > "$image_path"
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echo "$image_name" > "$post_directory/image_name"
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fi
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if command -v convert > /dev/null && [ -n "$image_name" ]
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then
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local thumb_path="$post_directory/thumb_$image_name.jpg"
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echo "[file_db_backend.sh] 'convert' found, generating thumbnail" >> "$log_file"
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# convert the image to a jpeg
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if echo "$image_path" | grep '.gif'
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then
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convert "$image_path"'[0]' "$thumb_path"
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else
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convert "$image_path" "$thumb_path"
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echo "[file_db_backend.sh] converted image to jpeg" >> "$log_file"
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fi
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# re-compress the jpeg to be under 100kb
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convert "$thumb_path" -define jpeg:extent=100kb "$thumb_path"
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echo "[file_db_backend.sh] re compressed image at $thumb_path" >> "$log_file"
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fi
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echo "[file_db_backend.sh] Finished adding post $post_id on $(date)" >> "$log_file"
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echo "[file_db_backend.sh] post dir: $post_directory" >> "$log_file"
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echo "$post_directory"
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return 0
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}
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get_post_data() {
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# this function is given a post id and a data item to be
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# retrieved. It returns the value of the requested item
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# TODO: file path caching
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local post_data_path="$1"
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local item="$2"
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local image_path=""
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echo "[file_db_backend.sh] Got request for $item from post at $post_data_path" >> "$log_file"
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if ! [ -d "$post_data_path" ]; then return 1; fi
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case "$item" in "parent")
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basename $(realpath "$post_data_path/..")
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;;
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"user")
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cat "$post_data_path/user"
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;;
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"title")
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cat "$post_data_path/title"
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;;
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"content")
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cat "$post_data_path/content"
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;;
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"thumb_path") # where the post's image is stored on the filesystem
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echo "thumb_$(cat "$post_data_path/$image_name").jpg"
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;;
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"image_path") # where the post's image is stored on the filesystem
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image_path="$post_data_path/$(cat "$post_data_path/image_name")"
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if [ -f "$image_path" ]
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then
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echo "$image_path"
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else
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echo ""
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fi
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;;
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"html_path") # where the post's html is on the filesystem
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echo "$post_data_path/index.html"
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;;
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"post_id")
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basename "$post_data_path"
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;;
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"post_type")
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cat "$post_data_path/type"
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;;
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"replies")
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# Newline separated list of post_id for all replies to the
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# specified post
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# A trailing /. is added to prevent find from seeing
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# post_data_path itself
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find "$post_data_path" \
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-mindepth 1 \
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-type d \
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-iname '[0-9]*' \
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-printf '%p\n' | sort
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;;
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esac
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}
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# no paths, only use the post id
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