2 # Copyright (C) 2018 rubenwardy
4 # This program is free software: you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation, either version 3 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program. If not, see <https://www.gnu.org/licenses/>.
18 from flask import request, flash, abort, redirect
19 from flask_user import *
20 from flask_login import login_user, logout_user
23 import random, string, os, imghdr
24 from urllib.parse import urljoin
26 def abs_url_for(path, **kwargs):
27 scheme = "https" if app.config["BASE_URL"][:5] == "https" else "http"
28 return url_for(path, _external=True, _scheme=scheme, **kwargs)
31 return urljoin(app.config["BASE_URL"], path)
33 def get_int_or_abort(v, default=None):
38 return int(v or default)
42 def getExtension(filename):
43 return filename.rsplit(".", 1)[1].lower() if "." in filename else None
45 def isFilenameAllowed(filename, exts):
46 return getExtension(filename) in exts
48 ALLOWED_IMAGES = set(["jpeg", "png"])
49 def isAllowedImage(data):
50 return imghdr.what(None, data) in ALLOWED_IMAGES
52 def shouldReturnJson():
53 return "application/json" in request.accept_mimetypes and \
54 not "text/html" in request.accept_mimetypes
57 return ''.join(random.choice(string.ascii_lowercase + \
58 string.ascii_uppercase + string.digits) for _ in range(n))
60 def doFileUpload(file, fileType, fileTypeDesc):
61 if not file or file is None or file.filename == "":
62 flash("No selected file", "danger")
65 assert os.path.isdir(app.config["UPLOAD_DIR"]), "UPLOAD_DIR must exist"
67 allowedExtensions = []
69 if fileType == "image":
70 allowedExtensions = ["jpg", "jpeg", "png"]
72 elif fileType == "zip":
73 allowedExtensions = ["zip"]
75 raise Exception("Invalid fileType")
77 ext = getExtension(file.filename)
78 if ext is None or not ext in allowedExtensions:
79 flash("Please upload " + fileTypeDesc, "danger")
82 if isImage and not isAllowedImage(file.stream.read()):
83 flash("Uploaded image isn't actually an image", "danger")
88 filename = randomString(10) + "." + ext
89 filepath = os.path.join(app.config["UPLOAD_DIR"], filename)
91 return "/uploads/" + filename, filepath
93 def make_flask_user_password(plaintext_str):
94 # http://passlib.readthedocs.io/en/stable/modular_crypt_format.html
95 # http://passlib.readthedocs.io/en/stable/lib/passlib.hash.bcrypt.html#format-algorithm
96 # Flask_User stores passwords in the Modular Crypt Format.
97 # https://github.com/lingthio/Flask-User/blob/master/flask_user/user_manager__settings.py#L166
98 # Note that Flask_User allows customizing password algorithms.
99 # USER_PASSLIB_CRYPTCONTEXT_SCHEMES defaults to bcrypt but if
100 # default changes or is customized, the code below needs adapting.
101 # Individual password values will look like:
102 # $2b$12$.az4S999Ztvy/wa3UdQvMOpcki1Qn6VYPXmEFMIdWQyYs7ULnH.JW
103 # $XX$RR$SSSSSSSSSSSSSSSSSSSSSSHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
104 # $XX : Selects algorithm (2b is bcrypt).
105 # $RR : Selects bcrypt key expansion rounds (12 is 2**12 rounds).
106 # $SSS... : 22 chars of (random, per-password) salt
107 # HHH... : 31 remaining chars of password hash (note no dollar sign)
109 plaintext = plaintext_str.encode("UTF-8")
110 password = bcrypt.hashpw(plaintext, bcrypt.gensalt())
111 if isinstance(password, str):
114 return password.decode("UTF-8")
123 # User must have been authenticated
127 if user.rank == UserRank.BANNED:
128 flash("You have been banned.", "danger")
132 if not user.rank.atLeast(UserRank.NEW_MEMBER):
133 user.rank = UserRank.MEMBER
137 # Check if user account has been disabled
138 if not _call_or_get(user.is_active):
139 flash("Your account has not been enabled.", "danger")
142 # Use Flask-Login to sign in user
143 login_user(user, remember=True)
144 signals.user_logged_in.send(current_app._get_current_object(), user=user)
146 flash("You have signed in successfully.", "success")
151 def rank_required(rank):
154 def decorated_function(*args, **kwargs):
155 if not current_user.is_authenticated:
156 return redirect(url_for("user.login"))
157 if not current_user.rank.atLeast(rank):
160 return f(*args, **kwargs)
162 return decorated_function
165 def getPackageByInfo(author, name):
166 user = User.query.filter_by(username=author).first()
170 package = Package.query.filter_by(name=name, author_id=user.id, soft_deleted=False).first()
176 def is_package_page(f):
178 def decorated_function(*args, **kwargs):
179 if not ("author" in kwargs and "name" in kwargs):
182 package = getPackageByInfo(kwargs["author"], kwargs["name"])
187 return f(package=package, *args, **kwargs)
189 return decorated_function
192 def addNotification(target, causer, title, url, package=None):
196 addNotification(x, causer, title, url, package)
201 if target.rank.atLeast(UserRank.NEW_MEMBER) and target != causer:
202 Notification.query.filter_by(user=target, causer=causer, title=title, url=url, package=package).delete()
203 notif = Notification(target, causer, title, url, package)
204 db.session.add(notif)
207 def addAuditLog(severity, causer, title, url, package=None, description=None):
208 entry = AuditLogEntry(causer, severity, title, url, package, description)
209 db.session.add(entry)
212 def clearNotifications(url):
213 if current_user.is_authenticated:
214 Notification.query.filter_by(user=current_user, url=url).delete()
218 YESES = ["yes", "true", "1", "on"]
221 return val and val.lower() in YESES
225 return val and not isYes(val)
227 def nonEmptyOrNone(str):
228 if str is None or str == "":