python-gallery/gallery/api.py
2023-03-04 21:08:42 +00:00

228 lines
6.8 KiB
Python

"""
Onlylegs - API endpoints
Used intermally by the frontend and possibly by other applications
"""
from uuid import uuid4
import os
import io
import logging
from flask import (
Blueprint, current_app, send_from_directory, send_file, request, g, abort, flash, jsonify)
from werkzeug.utils import secure_filename
from PIL import Image, ImageOps # ImageFilter
from sqlalchemy.orm import sessionmaker
from gallery.auth import login_required
from . import db # Import db to create a session
from . import metadata as mt
blueprint = Blueprint('api', __name__, url_prefix='/api')
db_session = sessionmaker(bind=db.engine)
db_session = db_session()
@blueprint.route('/uploads/<file>', methods=['GET'])
def uploads(file):
"""
Returns a file from the uploads folder
w and h are the width and height of the image for resizing
f is whether to apply filters to the image, such as blurring NSFW images
"""
# Get args
width = request.args.get('w', default=0, type=int) # Width of image
height = request.args.get('h', default=0, type=int) # Height of image
filtered = request.args.get('f', default=False, type=bool) # Whether to apply filters
# if no args are passed, return the raw file
if width == 0 and height == 0 and not filtered:
if not os.path.exists(os.path.join(current_app.config['UPLOAD_FOLDER'],
secure_filename(file))):
abort(404)
return send_from_directory(current_app.config['UPLOAD_FOLDER'], file ,as_attachment=True)
# Of either width or height is 0, set it to the other value to keep aspect ratio
if width > 0 and height == 0:
height = width
elif width == 0 and height > 0:
width = height
set_ext = current_app.config['ALLOWED_EXTENSIONS']
buff = io.BytesIO()
# Open image and set extension
try:
img = Image.open(os.path.join(current_app.config['UPLOAD_FOLDER'],file))
except FileNotFoundError:
logging.error('File not found: %s, possibly broken upload', file)
abort(404)
except Exception as err:
logging.error('Error opening image: %s', err)
abort(500)
img_ext = os.path.splitext(file)[-1].lower().replace('.', '')
img_ext = set_ext[img_ext]
# Get ICC profile as it alters colours when saving
img_icc = img.info.get("icc_profile")
# Resize image and orientate correctly
img.thumbnail((width, height), Image.LANCZOS)
img = ImageOps.exif_transpose(img)
# If has NSFW tag, blur image, etc.
if filtered:
#img = img.filter(ImageFilter.GaussianBlur(20))
pass
try:
img.save(buff, img_ext, icc_profile=img_icc)
except OSError:
# This usually happens when saving a JPEG with an ICC profile
# Convert to RGB and try again
img = img.convert('RGB')
img.save(buff, img_ext, icc_profile=img_icc)
except Exception as err:
logging.error('Could not resize image %s, error: %s', file, err)
abort(500)
img.close()
# Seek to beginning of buffer and return
buff.seek(0)
return send_file(buff, mimetype='image/' + img_ext)
@blueprint.route('/upload', methods=['POST'])
@login_required
def upload():
"""
Uploads an image to the server and saves it to the database
"""
form_file = request.files['file']
form = request.form
if not form_file:
return abort(404)
img_ext = os.path.splitext(form_file.filename)[-1].replace('.', '').lower()
img_name = f"GWAGWA_{str(uuid4())}.{img_ext}"
if not img_ext in current_app.config['ALLOWED_EXTENSIONS'].keys():
logging.info('File extension not allowed: %s', img_ext)
abort(403)
if os.path.isdir(current_app.config['UPLOAD_FOLDER']) is False:
os.mkdir(current_app.config['UPLOAD_FOLDER'])
# Save to database
try:
db_session.add(db.posts(img_name, form['description'], form['alt'], g.user.id))
db_session.commit()
except Exception as err:
logging.error('Could not save to database: %s', err)
abort(500)
# Save file
try:
form_file.save(
os.path.join(current_app.config['UPLOAD_FOLDER'], img_name))
except Exception as err:
logging.error('Could not save file: %s', err)
abort(500)
return 'Gwa Gwa'
@blueprint.route('/remove/<int:img_id>', methods=['POST'])
@login_required
def remove(img_id):
"""
Deletes an image from the server and database
"""
img = db_session.query(db.posts).filter_by(id=img_id).first()
if img is None:
abort(404)
if img.author_id != g.user.id:
abort(403)
try:
os.remove(os.path.join(current_app.config['UPLOAD_FOLDER'],img.file_name))
except FileNotFoundError:
# File was already deleted or doesn't exist
logging.warning('File not found: %s, already deleted or never existed', img.file_name)
except Exception as err:
logging.error('Could not remove file: %s', err)
abort(500)
try:
db_session.query(db.posts).filter_by(id=img_id).delete()
db_session.commit()
except Exception as err:
logging.error('Could not remove from database: %s', err)
abort(500)
logging.info('Removed image (%s) %s', img_id, img.file_name)
flash(['Image was all in Le Head!', 1])
return 'Gwa Gwa'
@blueprint.route('/metadata/<int:img_id>', methods=['GET'])
def metadata(img_id):
"""
Yoinks metadata from an image
"""
img = db_session.query(db.posts).filter_by(id=img_id).first()
if img is None:
abort(404)
img_path = os.path.join(current_app.config['UPLOAD_FOLDER'], img.file_name)
exif = mt.Metadata(img_path).yoink()
return jsonify(exif)
@blueprint.route('/logfile')
@login_required
def logfile():
"""
Gets the log file and returns it as a JSON object
"""
filename = logging.getLoggerClass().root.handlers[0].baseFilename
log_dict = {}
i = 0
with open(filename, encoding='utf-8') as file:
for line in file:
line = line.split(' : ')
event = line[0].strip().split(' ')
event_data = {
'date': event[0],
'time': event[1],
'severity': event[2],
'owner': event[3]
}
message = line[1].strip()
try:
message_data = {
'code': int(message[1:4]),
'message': message[5:].strip()
}
except ValueError:
message_data = {'code': 0, 'message': message}
except Exception as err:
logging.error('Could not parse log file: %s', err)
abort(500)
log_dict[i] = {'event': event_data, 'message': message_data}
i += 1 # Line number, starts at 0
return jsonify(log_dict)