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server.py
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server.py
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#!/usr/bin/env python
# pylint: disable=wrong-import-order, ungrouped-imports
"""Server module."""
import collections
import os
import sys
import typing as T
from typing import Any, Dict, Union # NOQA; type: ignore
from unittest import mock
from urllib.parse import urlparse
from flask.cli import FlaskGroup
from flask.views import MethodView
from flask_admin import Admin
from flask_api import FlaskAPI, exceptions, status
from flask_bootstrap import Bootstrap
from flask_paginate import Pagination, get_page_parameter, get_per_page_parameter
import buku
from buku import BukuDb, __version__, network_handler
try:
from flask_reverse_proxy_fix.middleware import ReverseProxyPrefixFix
except ImportError:
ReverseProxyPrefixFix = None
import click
import flask
from flask import __version__ as flask_version # type: ignore
from flask import (
abort,
current_app,
flash,
jsonify,
redirect,
render_template,
request,
url_for,
)
from markupsafe import Markup
try:
from . import forms, response, views
except ImportError:
from bukuserver import forms, response, views
STATISTIC_DATA = None
def get_bukudb():
"""get bukudb instance"""
db_file = current_app.config.get('BUKUSERVER_DB_FILE', None)
return BukuDb(dbfile=db_file)
def get_tags():
"""get tags."""
tags = getattr(flask.g, 'bukudb', get_bukudb()).get_tag_all()
result = {
'tags': tags[0]
}
if request.path.startswith('/api/'):
res = jsonify(result)
else:
res = render_template('bukuserver/tags.html', result=result)
return res
def handle_network():
failed_resp = response.response_template['failure'], status.HTTP_400_BAD_REQUEST
url = request.data.get('url', None)
if not url:
return failed_resp
try:
res = network_handler(url)
keys = ['title', 'description', 'tags', 'recognized mime', 'bad url']
res_dict = dict(zip(keys, res))
return jsonify(res_dict)
except Exception as e:
current_app.logger.debug(str(e))
return failed_resp
def update_tag(tag):
res = None
if request.method in ('PUT', 'POST'):
new_tags = request.form.getlist('tags')
result_flag = getattr(flask.g, 'bukudb', get_bukudb()).replace_tag(tag, new_tags)
op_text = 'replace tag [{}] with [{}]'.format(tag, ', '.join(new_tags))
if request.method == 'PUT' and result_flag and request.path.startswith('/api/'):
res = (jsonify(response.response_template['success']),
status.HTTP_200_OK,
{'ContentType': 'application/json'})
elif request.method == 'PUT' and request.path.startswith('/api/'):
res = (jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
elif request.method == 'POST' and result_flag:
flash(Markup('Success {}'.format(op_text)), 'success')
res = redirect(url_for('get_tags-html'))
elif request.method == 'POST':
flash(Markup('Failed {}'.format(op_text)), 'danger')
res = redirect(url_for('get_tags-html'))
else:
abort(400, description="Unknown Condition")
return res
def refresh_bookmark(rec_id: Union[int, None]):
if rec_id is not None:
result_flag = getattr(flask.g, 'bukudb', get_bukudb()).refreshdb(rec_id, request.form.get('threads', 4))
else:
result_flag = getattr(flask.g, 'bukudb', get_bukudb()).refreshdb(0, request.form.get('threads', 4))
if result_flag:
res = (jsonify(response.response_template['success']),
status.HTTP_200_OK,
{'ContentType': 'application/json'})
else:
res = (jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
return res
def get_tiny_url(rec_id):
shortened_url = getattr(flask.g, 'bukudb', get_bukudb()).tnyfy_url(rec_id)
if shortened_url is not None:
result = {'url': shortened_url}
res = jsonify(result)
else:
res = (
jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
return res
def search_bookmarks():
arg_obj = request.form if request.method == 'DELETE' else request.args
search_bookmarks_form = forms.SearchBookmarksForm(request.args)
is_api_request_path = request.path.startswith('/api/')
if is_api_request_path:
keywords = arg_obj.getlist('keywords')
all_keywords = arg_obj.get('all_keywords')
deep = arg_obj.get('deep')
regex = arg_obj.get('regex')
# api request is more strict
all_keywords = False if all_keywords is None else all_keywords
deep = False if deep is None else deep
regex = False if regex is None else regex
all_keywords = (
all_keywords if isinstance(all_keywords, bool) else
all_keywords.lower() == 'true'
)
deep = deep if isinstance(deep, bool) else deep.lower() == 'true'
regex = regex if isinstance(regex, bool) else regex.lower() == 'true'
else:
keywords = search_bookmarks_form.keywords.data
all_keywords = search_bookmarks_form.all_keywords.data
deep = search_bookmarks_form.deep.data
regex = search_bookmarks_form.regex.data
result = {'bookmarks': []}
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
found_bookmarks = bukudb.searchdb(keywords, all_keywords, deep, regex)
found_bookmarks = [] if found_bookmarks is None else found_bookmarks
page = request.args.get(get_page_parameter(), type=int, default=1)
per_page = request.args.get(
get_per_page_parameter(),
type=int,
default=int(
current_app.config.get('BUKUSERVER_PER_PAGE', views.DEFAULT_PER_PAGE))
)
res = None
if request.method == 'GET':
if found_bookmarks is not None:
for bookmark in found_bookmarks:
result_bookmark = {
'id': bookmark[0],
'url': bookmark[1],
'title': bookmark[2],
'tags': list(filter(lambda x: x, bookmark[3].split(','))),
'description': bookmark[4]
}
result['bookmarks'].append(result_bookmark)
current_app.logger.debug('total bookmarks:{}'.format(len(result['bookmarks'])))
if is_api_request_path:
res = jsonify(result)
else:
pagination_total = len(result['bookmarks'])
bms = list(views.chunks(result['bookmarks'], per_page))
try:
result['bookmarks'] = bms[page-1]
except IndexError as err:
current_app.logger.debug('{}:{}, result bookmarks:{}, page:{}'.format(
type(err), err, len(result['bookmarks']), page
))
pagination = Pagination(
page=page, total=pagination_total, per_page=per_page,
search=False, record_name='bookmarks', bs_version=3
)
res = render_template(
'bukuserver/bookmarks.html',
result=result, pagination=pagination,
search_bookmarks_form=search_bookmarks_form,
create_bookmarks_form=forms.BookmarkForm(),
)
elif request.method == 'DELETE':
if found_bookmarks is not None:
for bookmark in found_bookmarks:
result_flag = bukudb.delete_rec(bookmark[0])
if result_flag is False:
res = (jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
if res is None:
res = (jsonify(response.response_template['success']),
status.HTTP_200_OK,
{'ContentType': 'application/json'})
return res
def get_bool_from_env_var(key: str, default_value: bool) -> bool:
"""Get bool value from env var."""
value = os.getenv(key)
if value is None:
return default_value
if value.lower() in ['true', '1']:
return True
if value.lower() in ['false', '0']:
return False
return default_value
def create_app(db_file=None):
"""create app."""
app = FlaskAPI(__name__)
per_page = int(os.getenv('BUKUSERVER_PER_PAGE', str(views.DEFAULT_PER_PAGE)))
per_page = per_page if per_page > 0 else views.DEFAULT_PER_PAGE
app.config['BUKUSERVER_PER_PAGE'] = per_page
url_render_mode = os.getenv('BUKUSERVER_URL_RENDER_MODE', views.DEFAULT_URL_RENDER_MODE)
if url_render_mode not in ('full', 'netloc'):
url_render_mode = views.DEFAULT_URL_RENDER_MODE
app.config['BUKUSERVER_URL_RENDER_MODE'] = url_render_mode
app.config['SECRET_KEY'] = os.getenv('BUKUSERVER_SECRET_KEY') or os.urandom(24)
app.config['BUKUSERVER_DISABLE_FAVICON'] = \
get_bool_from_env_var('BUKUSERVER_DISABLE_FAVICON', True)
app.config['BUKUSERVER_OPEN_IN_NEW_TAB'] = \
get_bool_from_env_var('BUKUSERVER_OPEN_IN_NEW_TAB', False)
app.config['BUKUSERVER_DB_FILE'] = os.getenv('BUKUSERVER_DB_FILE') or db_file
reverse_proxy_path = os.getenv('BUKUSERVER_REVERSE_PROXY_PATH')
if reverse_proxy_path:
if not reverse_proxy_path.startswith('/'):
print('Warning: reverse proxy path should include preceding slash')
if reverse_proxy_path.endswith('/'):
print('Warning: reverse proxy path should not include trailing slash')
app.config['REVERSE_PROXY_PATH'] = reverse_proxy_path
if ReverseProxyPrefixFix:
ReverseProxyPrefixFix(app)
else:
raise ImportError('Failed to import ReverseProxyPrefixFix')
bukudb = BukuDb(dbfile=app.config['BUKUSERVER_DB_FILE'])
app.app_context().push()
setattr(flask.g, 'bukudb', bukudb)
@app.shell_context_processor
def shell_context():
"""Shell context definition."""
return {'app': app, 'bukudb': bukudb}
app.jinja_env.filters['netloc'] = lambda x: urlparse(x).netloc # pylint: disable=no-member
Bootstrap(app)
admin = Admin(
app, name='buku server', template_mode='bootstrap3',
index_view=views.CustomAdminIndexView(
template='bukuserver/home.html', url='/'
)
)
# routing
# api
tag_api_view = ApiTagView.as_view('tag_api')
app.add_url_rule('/api/tags', defaults={'tag': None}, view_func=tag_api_view, methods=['GET'])
app.add_url_rule('/api/tags/<tag>', view_func=tag_api_view, methods=['GET', 'PUT'])
bookmark_api_view = ApiBookmarkView.as_view('bookmark_api')
app.add_url_rule('/api/bookmarks', defaults={'rec_id': None}, view_func=bookmark_api_view, methods=['GET', 'POST', 'DELETE'])
app.add_url_rule('/api/bookmarks/<int:rec_id>', view_func=bookmark_api_view, methods=['GET', 'PUT', 'DELETE'])
app.add_url_rule('/api/bookmarks/refresh', 'refresh_bookmark', refresh_bookmark, defaults={'rec_id': None}, methods=['POST'])
app.add_url_rule('/api/bookmarks/<int:rec_id>/refresh', 'refresh_bookmark', refresh_bookmark, methods=['POST'])
app.add_url_rule('/api/bookmarks/<int:rec_id>/tiny', 'get_tiny_url', get_tiny_url, methods=['GET'])
app.add_url_rule('/api/network_handle', 'network_handle', handle_network, methods=['POST'])
bookmark_range_api_view = ApiBookmarkRangeView.as_view('bookmark_range_api')
app.add_url_rule(
'/api/bookmarks/<int:starting_id>/<int:ending_id>',
view_func=bookmark_range_api_view, methods=['GET', 'PUT', 'DELETE'])
bookmark_search_api_view = ApiBookmarkSearchView.as_view('bookmark_search_api')
app.add_url_rule('/api/bookmarks/search', view_func=bookmark_search_api_view, methods=['GET', 'DELETE'])
bookmarklet_view = BookmarkletView.as_view('bookmarklet')
app.add_url_rule('/bookmarklet', view_func=bookmarklet_view, methods=['GET'])
# non api
admin.add_view(views.BookmarkModelView(
bukudb, 'Bookmarks', page_size=per_page, url_render_mode=url_render_mode))
admin.add_view(views.TagModelView(
bukudb, 'Tags', page_size=per_page))
admin.add_view(views.StatisticView(
bukudb, 'Statistic', endpoint='statistic'))
return app
def search_tag(
db: BukuDb, stag: T.Optional[str] = None, limit: T.Optional[int] = None
) -> T.Tuple[T.List[str], T.Dict[str, int]]:
"""search tag.
db:
buku db instance
stag:
search tag
limit:
positive integer limit
Returns
-------
tuple
list of unique tags sorted alphabetically and dictionary of tag and its usage count
Raises
------
ValueError
if limit is not positive
"""
if limit is not None and limit < 1:
raise ValueError("limit must be positive")
tags: T.Set[str] = set()
counter = collections.Counter()
query_list = ["SELECT DISTINCT tags , COUNT(tags) FROM bookmarks"]
if stag:
query_list.append("where tags LIKE :search_tag")
query_list.append("GROUP BY tags")
row: T.Tuple[str, int]
for row in db.cur.execute(" ".join(query_list), {"search_tag": f"%{stag}%"}):
for tag in row[0].strip(buku.DELIM).split(buku.DELIM):
if not tag:
continue
tags.add(tag)
counter[tag] += row[1]
return list(sorted(tags)), dict(counter.most_common(limit))
class ApiTagView(MethodView):
def get(self, tag: T.Optional[str]):
bukudb = get_bukudb()
if tag is None:
return {"tags": search_tag(db=bukudb, limit=5)[0]}
tags = search_tag(db=bukudb, stag=tag)
if tag not in tags[1]:
raise exceptions.NotFound()
return dict(name=tag, usage_count=tags[1][tag])
def put(self, tag: str):
bukudb = get_bukudb()
res = None
try:
new_tags = request.data.get('tags') # type: ignore
if new_tags:
new_tags = new_tags.split(',')
else:
return response.response_template['failure'], status.HTTP_400_BAD_REQUEST
except AttributeError as e:
raise exceptions.ParseError(detail=str(e))
result_flag = bukudb.replace_tag(tag, new_tags)
if result_flag:
res = response.response_template['success'], status.HTTP_200_OK
else:
res = response.response_template['failure'], status.HTTP_400_BAD_REQUEST
return res
class ApiBookmarkView(MethodView):
def get(self, rec_id: Union[int, None]):
if rec_id is None:
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
all_bookmarks = bukudb.get_rec_all()
result = {'bookmarks': []} # type: Dict[str, Any]
for bookmark in all_bookmarks:
result_bookmark = {
'url': bookmark[1],
'title': bookmark[2],
'tags': list(filter(lambda x: x, bookmark[3].split(','))),
'description': bookmark[4]
}
if not request.path.startswith('/api/'):
result_bookmark['id'] = bookmark[0]
result['bookmarks'].append(result_bookmark)
res = jsonify(result)
else:
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
bookmark = bukudb.get_rec_by_id(rec_id)
if bookmark is not None:
result = {
'url': bookmark[1],
'title': bookmark[2],
'tags': list(filter(lambda x: x, bookmark[3].split(','))),
'description': bookmark[4]
}
res = jsonify(result)
else:
res = jsonify(response.response_template['failure']), status.HTTP_400_BAD_REQUEST, \
{'ContentType': 'application/json'}
return res
def post(self, rec_id: None = None):
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
create_bookmarks_form = forms.BookmarkForm()
url_data = create_bookmarks_form.url.data
result_flag = bukudb.add_rec(
url_data,
create_bookmarks_form.title.data,
create_bookmarks_form.tags.data,
create_bookmarks_form.description.data
)
if result_flag != -1:
res = jsonify(response.response_template['success'])
else:
res = jsonify(response.response_template['failure'])
res.status_code = status.HTTP_400_BAD_REQUEST
return res
def put(self, rec_id: int):
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
result_flag = bukudb.update_rec(
rec_id,
request.form.get('url'),
request.form.get('title'),
request.form.get('tags'),
request.form.get('description'))
if result_flag:
res = (jsonify(response.response_template['success']),
status.HTTP_200_OK,
{'ContentType': 'application/json'})
else:
res = (jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
return res
def delete(self, rec_id: Union[int, None]):
if rec_id is None:
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
with mock.patch('buku.read_in', return_value='y'):
result_flag = bukudb.cleardb()
if result_flag:
res = jsonify(response.response_template['success'])
else:
res = jsonify(response.response_template['failure'])
res.status_code = status.HTTP_400_BAD_REQUEST
else:
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
result_flag = bukudb.delete_rec(rec_id)
if result_flag:
res = (jsonify(response.response_template['success']),
status.HTTP_200_OK,
{'ContentType': 'application/json'})
else:
res = (jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
return res
class ApiBookmarkRangeView(MethodView):
def get(self, starting_id: int, ending_id: int):
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
max_id = bukudb.get_max_id()
if starting_id > max_id or ending_id > max_id:
return jsonify(response.response_template['failure']), status.HTTP_400_BAD_REQUEST, \
{'ContentType': 'application/json'}
result = {'bookmarks': {}} # type: ignore
for i in range(starting_id, ending_id + 1, 1):
bookmark = bukudb.get_rec_by_id(i)
result['bookmarks'][i] = {
'url': bookmark[1],
'title': bookmark[2],
'tags': list(filter(lambda x: x, bookmark[3].split(','))),
'description': bookmark[4]
}
res = jsonify(result)
return res
def put(self, starting_id: int, ending_id: int):
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
max_id = bukudb.get_max_id()
if starting_id > max_id or ending_id > max_id:
return jsonify(response.response_template['failure']), status.HTTP_400_BAD_REQUEST, \
{'ContentType': 'application/json'}
for i in range(starting_id, ending_id + 1, 1):
updated_bookmark = request.data.get(str(i)) # type: ignore
result_flag = bukudb.update_rec(
i,
updated_bookmark.get('url'),
updated_bookmark.get('title'),
updated_bookmark.get('tags'),
updated_bookmark.get('description'))
if result_flag is False:
return (
jsonify(response.response_template['failure']),
status.HTTP_400_BAD_REQUEST,
{'ContentType': 'application/json'})
res = jsonify(response.response_template['success'])
return res
def delete(self, starting_id: int, ending_id: int):
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
max_id = bukudb.get_max_id()
if starting_id > max_id or ending_id > max_id:
return jsonify(response.response_template['failure']), status.HTTP_400_BAD_REQUEST, \
{'ContentType': 'application/json'}
idx = min([starting_id, ending_id])
result_flag = bukudb.delete_rec(idx, starting_id, ending_id, is_range=True)
if result_flag is False:
res = jsonify(response.response_template['failure'])
res.status_code = status.HTTP_400_BAD_REQUEST
else:
res = jsonify(response.response_template['success'])
return res
class ApiBookmarkSearchView(MethodView):
def get(self):
arg_obj = request.args
keywords = arg_obj.getlist('keywords')
all_keywords = arg_obj.get('all_keywords')
deep = arg_obj.get('deep')
regex = arg_obj.get('regex')
# api request is more strict
all_keywords = False if all_keywords is None else all_keywords
deep = False if deep is None else deep
regex = False if regex is None else regex
all_keywords = (
all_keywords if isinstance(all_keywords, bool) else
all_keywords.lower() == 'true'
)
deep = deep if isinstance(deep, bool) else deep.lower() == 'true'
regex = regex if isinstance(regex, bool) else regex.lower() == 'true'
result = {'bookmarks': []}
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
found_bookmarks = bukudb.searchdb(keywords, all_keywords, deep, regex)
found_bookmarks = [] if found_bookmarks is None else found_bookmarks
res = None
if found_bookmarks is not None:
for bookmark in found_bookmarks:
result_bookmark = {
'id': bookmark[0],
'url': bookmark[1],
'title': bookmark[2],
'tags': list(filter(lambda x: x, bookmark[3].split(','))),
'description': bookmark[4]
}
result['bookmarks'].append(result_bookmark)
current_app.logger.debug('total bookmarks:{}'.format(len(result['bookmarks'])))
res = jsonify(result)
return res
def delete(self):
arg_obj = request.form
keywords = arg_obj.getlist('keywords')
all_keywords = arg_obj.get('all_keywords')
deep = arg_obj.get('deep')
regex = arg_obj.get('regex')
# api request is more strict
all_keywords = False if all_keywords is None else all_keywords
deep = False if deep is None else deep
regex = False if regex is None else regex
all_keywords = (
all_keywords if isinstance(all_keywords, bool) else
all_keywords.lower() == 'true'
)
deep = deep if isinstance(deep, bool) else deep.lower() == 'true'
regex = regex if isinstance(regex, bool) else regex.lower() == 'true'
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
found_bookmarks = bukudb.searchdb(keywords, all_keywords, deep, regex)
found_bookmarks = [] if found_bookmarks is None else found_bookmarks
res = None
if found_bookmarks is not None:
for bookmark in found_bookmarks:
result_flag = bukudb.delete_rec(bookmark[0])
if result_flag is False:
res = jsonify(response.response_template['failure'])
res.status = status.HTTP_400_BAD_REQUEST
if res is None:
res = jsonify(response.response_template['success'])
return res
class BookmarkletView(MethodView): # pylint: disable=too-few-public-methods
def get(self):
url = request.args.get('url')
title = request.args.get('title')
description = request.args.get('description')
bukudb = getattr(flask.g, 'bukudb', get_bukudb())
rec_id = bukudb.get_rec_id(url)
if rec_id >= 0:
return redirect(url_for('bookmark.edit_view', id=rec_id))
return redirect(url_for('bookmark.create_view', url=url, title=title, description=description))
class CustomFlaskGroup(FlaskGroup): # pylint: disable=too-few-public-methods
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.params[0].help = 'Show the program version'
self.params[0].callback = get_custom_version
def get_custom_version(ctx, param, value):
if not value or ctx.resilient_parsing:
return
message = '%(app_name)s %(app_version)s\nFlask %(version)s\nPython %(python_version)s'
click.echo(message % {
'app_name': 'buku',
'app_version': __version__,
'version': flask_version,
'python_version': sys.version,
}, color=ctx.color)
ctx.exit()
@click.group(cls=CustomFlaskGroup, create_app=create_app)
def cli():
"""This is a script for the bukuserver application."""
if __name__ == '__main__':
cli()