Move storage to classes, support double suffixes
This commit is contained in:
Mia Herkt
parent
cd083a7f83
commit
73045dc5e5
181
fhost.py
181
fhost.py
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@ -26,7 +26,7 @@ from jinja2.exceptions import *
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from hashlib import sha256
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from magic import Magic
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from mimetypes import guess_extension
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import os, sys
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import sys
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import requests
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from short_url import UrlEncoder
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from validators import url as url_valid
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@ -66,10 +66,11 @@ app.config.update(
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URL_ALPHABET = "DEQhd2uFteibPwq0SWBInTpA_jcZL5GKz3YCR14Ulk87Jors9vNHgfaOmMXy6Vx-",
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)
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app.config.from_pyfile("config.py")
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if not app.config["TESTING"]:
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app.config.from_pyfile("config.py")
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if app.config["DEBUG"]:
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app.config["FHOST_USE_X_ACCEL_REDIRECT"] = False
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if app.config["DEBUG"]:
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app.config["FHOST_USE_X_ACCEL_REDIRECT"] = False
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if app.config["NSFW_DETECT"]:
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from nsfw_detect import NSFWDetector
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@ -82,9 +83,6 @@ except:
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Please install python-magic.""")
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sys.exit(1)
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storage = Path(app.config["FHOST_STORAGE_PATH"])
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storage.mkdir(parents=True, exist_ok=True)
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db = SQLAlchemy(app)
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migrate = Migrate(app, db)
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@ -103,6 +101,16 @@ class URL(db.Model):
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def geturl(self):
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return url_for("get", path=self.getname(), _external=True) + "\n"
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def get(url):
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u = URL.query.filter_by(url=url).first()
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if not u:
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u = URL(url)
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db.session.add(u)
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db.session.commit()
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return u
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class File(db.Model):
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id = db.Column(db.Integer, primary_key = True)
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sha256 = db.Column(db.String, unique = True)
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@ -112,12 +120,11 @@ class File(db.Model):
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removed = db.Column(db.Boolean, default=False)
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nsfw_score = db.Column(db.Float)
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def __init__(self, sha256, ext, mime, addr, nsfw_score):
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def __init__(self, sha256, ext, mime, addr):
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self.sha256 = sha256
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self.ext = ext
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self.mime = mime
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self.addr = addr
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self.nsfw_score = nsfw_score
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def getname(self):
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return u"{0}{1}".format(su.enbase(self.id, 1), self.ext)
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@ -130,6 +137,71 @@ class File(db.Model):
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else:
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return url_for("get", path=n, _external=True) + "\n"
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def store(file_, addr):
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data = file_.stream.read()
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digest = sha256(data).hexdigest()
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def get_mime():
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guess = mimedetect.from_buffer(data)
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app.logger.debug(f"MIME - specified: '{file_.content_type}' - detected: '{guess}'")
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if not file_.content_type or not "/" in file_.content_type or file_.content_type == "application/octet-stream":
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mime = guess
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else:
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mime = file_.content_type
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if mime in app.config["FHOST_MIME_BLACKLIST"] or guess in app.config["FHOST_MIME_BLACKLIST"]:
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abort(415)
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if mime.startswith("text/") and not "charset" in mime:
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mime += "; charset=utf-8"
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return mime
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def get_ext(mime):
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ext = "".join(Path(file_.filename).suffixes[-2:])
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gmime = mime[:mime.find(";")]
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guess = guess_extension(gmime)
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app.logger.debug(f"extension - specified: '{ext}' - detected: '{guess}'")
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if not ext:
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if gmime in app.config["FHOST_EXT_OVERRIDE"]:
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ext = app.config["FHOST_EXT_OVERRIDE"][gmime]
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else:
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ext = guess_extension(gmime)
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return ext[:app.config["FHOST_MAX_EXT_LENGTH"]] or ".bin"
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f = File.query.filter_by(sha256=digest).first()
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if f:
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if f.removed:
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abort(451)
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else:
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mime = get_mime()
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ext = get_ext(mime)
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f = File(digest, ext, mime, addr)
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f.addr = addr
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storage = Path(app.config["FHOST_STORAGE_PATH"])
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storage.mkdir(parents=True, exist_ok=True)
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p = storage / digest
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if not p.is_file():
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file_.stream.seek(0)
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file_.save(p)
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else:
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p.touch()
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if not f.nsfw_score and app.config["NSFW_DETECT"]:
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f.nsfw_score = nsfw.detect(p)
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db.session.add(f)
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db.session.commit()
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return f
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def fhost_url(scheme=None):
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if not scheme:
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return url_for(".fhost", _external=True).rstrip("/")
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@ -146,16 +218,9 @@ def shorten(url):
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if not url_valid(url) or is_fhost_url(url) or "\n" in url:
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abort(400)
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existing = URL.query.filter_by(url=url).first()
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u = URL.get(url)
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if existing:
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return existing.geturl()
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else:
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u = URL(url)
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db.session.add(u)
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db.session.commit()
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return u.geturl()
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return u.geturl()
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def in_upload_bl(addr):
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if app.config["FHOST_UPLOAD_BLACKLIST"]:
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@ -172,71 +237,9 @@ def store_file(f, addr):
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if in_upload_bl(addr):
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return "Your host is blocked from uploading files.\n", 451
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data = f.stream.read()
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digest = sha256(data).hexdigest()
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existing = File.query.filter_by(sha256=digest).first()
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sf = File.store(f, addr)
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if existing:
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if existing.removed:
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abort(451)
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epath = storage / existing.sha256
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if not epath.is_file():
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f.save(epath)
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if existing.nsfw_score == None:
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if app.config["NSFW_DETECT"]:
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existing.nsfw_score = nsfw.detect(epath)
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epath.touch()
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existing.addr = addr
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db.session.commit()
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return existing.geturl()
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else:
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guessmime = mimedetect.from_buffer(data)
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if not f.content_type or not "/" in f.content_type or f.content_type == "application/octet-stream":
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mime = guessmime
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else:
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mime = f.content_type
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if mime in app.config["FHOST_MIME_BLACKLIST"] or guessmime in app.config["FHOST_MIME_BLACKLIST"]:
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abort(415)
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if mime.startswith("text/") and not "charset" in mime:
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mime += "; charset=utf-8"
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ext = os.path.splitext(f.filename)[1]
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if not ext:
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gmime = mime.split(";")[0]
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if not gmime in app.config["FHOST_EXT_OVERRIDE"]:
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ext = guess_extension(gmime)
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else:
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ext = app.config["FHOST_EXT_OVERRIDE"][gmime]
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else:
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ext = ext[:8]
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if not ext:
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ext = ".bin"
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spath = storage / digest
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f.save(spath)
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if app.config["NSFW_DETECT"]:
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nsfw_score = nsfw.detect(spath)
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else:
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nsfw_score = None
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sf = File(digest, ext, mime, addr, nsfw_score)
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db.session.add(sf)
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db.session.commit()
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return sf.geturl()
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return sf.geturl()
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def store_url(url, addr):
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if is_fhost_url(url):
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@ -267,17 +270,19 @@ def store_url(url, addr):
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@app.route("/<path:path>")
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def get(path):
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p = os.path.splitext(path)
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id = su.debase(p[0])
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path = Path(path)
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sufs = "".join(path.suffixes[-2:])
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name = path.name[:-len(sufs) or None]
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id = su.debase(name)
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if p[1]:
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if sufs:
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f = File.query.get(id)
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if f and f.ext == p[1]:
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if f and f.ext == sufs:
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if f.removed:
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abort(451)
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fpath = storage / f.sha256
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fpath = Path(app.config["FHOST_STORAGE_PATH"]) / f.sha256
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if not fpath.is_file():
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abort(404)
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@ -286,7 +291,7 @@ def get(path):
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response = make_response()
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response.headers["Content-Type"] = f.mime
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response.headers["Content-Length"] = fpath.stat().st_size
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response.headers["X-Accel-Redirect"] = "/" + fpath
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response.headers["X-Accel-Redirect"] = "/" + str(fpath)
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return response
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else:
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return send_from_directory(app.config["FHOST_STORAGE_PATH"], f.sha256, mimetype = f.mime)
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