def get_subjects(queue):
logger = logging.getLogger(__name__)
connection = Connection()
request = connection.get(connection.user_url)
soup = BeautifulSoup(request.text, "html.parser")
primary_li = soup.find_all("li", class_="contentnode")[3]
lis = primary_li.find_all("li")
logger.debug("Found %d potential subjects", len(lis))
subjects = []
for li in lis:
course_id = int(re.search(r"course=(\d+)", li.a["href"]).group(1))
subject_url = "https://campusvirtual.uva.es/course/view.php?id=%d" % course_id
name = re.search(r"^([\w\/\sáéíóúÁÉÍÓÚ]+?)\s?\(", li.text).group(1)
if course_id in settings.exclude_subjects_ids:
logger.info("Excluding subject %s (%d)", name, course_id)
continue
# Don't consider subject if 'grado' is in the name (it is the degree itself)
if "grado" in name.lower():
continue
logger.debug("Assembling subject %r", name)
_subject = Subject(name, subject_url, queue)
subjects.append(_subject)
subjects.sort(key=lambda x: x.name)
return subjects
class Subject:
"""Representation of a subject."""
def __init__(self, name, url, queue):
"""
Args:
name (str): name of the subject.
url (str): url of the subject.
queue (Queue): queue to controll threads.
"""
name = name.capitalize().replace("\\", "").replace("/", "").strip()
self.name = Alias.id_to_alias(
sha1(url.encode()).hexdigest(), settings.root_folder / name
).name
self.url = url
self.connection = Connection()
self.queue = queue
self.enable_section_indexing = self.url in settings.section_indexing_urls
self.response: Response = None
self.soup: BeautifulSoup = None
self.notes_links = []
self.folder_lock = Lock()
self.hasfolder = False
# self.folder = settings.root_folder / secure_filename(self.name)
self.folder = settings.root_folder / self.name
self.logger = logging.getLogger(__name__)
self.logger.debug(
"Created %s(name=%r, url=%r)", type(self).__name__, self.name, self.url
)
def __repr__(self):
return (
f"{type(self).__name__}(name={self.name!r}, url={self.url!r}, "
f"{len(self.notes_links)} notes links)"
)
def __str__(self):
return f"{self.name}"
def make_request(self):
"""Makes the primary request."""
self.logger.debug("Making subject request")
self.response = self.connection.get(self.url)
self.soup = BeautifulSoup(self.response.text, "html.parser")
self.logger.debug("Response obtained [%d]", self.response.status_code)
self.logger.debug("Response parsed")
def create_folder(self):
"""Creates the folder named as self."""
if self.hasfolder is False:
self.logger.debug("Creating folder %r", self.name)
with self.folder_lock:
if not self.folder.exists():
os.makedirs(self.folder.as_posix())
self.hasfolder = True
else:
self.logger.debug("Folder already exists: %r", self.name)
def add_link(self, link: BaseLink):
"""Adds a note link to the list."""
self.logger.debug("Adding link: %s", link.name)
if not self.enable_section_indexing:
link.section = None
self.notes_links.append(link)
self.queue.put(link)
@staticmethod
def find_section_by_child(child):
try:
section_h3 = child.find_parent("li", class_="section main clearfix").find(
"h3", class_="sectionname"
)
except AttributeError:
section_h3 = child.find_parent(
"li", class_="section main clearfix current"
).find("h3", class_="sectionname")
return Section(section_h3.text, section_h3.a["href"])
@staticmethod
def url_to_query_args(url: str):
return parse_qs(urlparse(url).query)
def find_and_download_links(self):
"""Finds the links downloading the primary page."""
self.logger.debug("Finding links of %s", self.name)
self.make_request()
_ = [x.extract() for x in self.soup.findAll("span", {"class": "accesshide"})]
_ = [x.extract() for x in self.soup.findAll("div", {"class": "mod-indent"})]
for folder in self.soup.find_all("div", class_="singlebutton"):
folder_name = folder.parent.parent.div.find(
"span", class_="fp-filename"
).text
section = self.find_section_by_child(folder)
folder_url = folder.form["action"]
folder_icon_url = folder.find_parent(
"div", class_="contentwithoutlink"
).find("img", class_="icon")["src"]
id_ = folder.form.find("input", {"name": "id"})["value"]
self.logger.debug(
"Created Folder (subject search): %r, %s", folder_name, folder_url
)
self.add_link(
Folder(folder_name, section, folder_url, folder_icon_url, self, id_)
)
for resource in self.soup.find_all("div", class_="activityinstance"):
if not resource.a:
continue
section = self.find_section_by_child(resource)
name = resource.a.span.text
url = resource.a["href"]
icon_url = resource.a.img["src"]
if "resource" in url:
self.logger.debug(
"Created Resource (subject search): %r, %s", name, url
)
self.add_link(Resource(name, section, url, icon_url, self))
elif "folder" in url:
real_url = "https://campusvirtual.uva.es/mod/folder/download_folder.php"
id_ = self.url_to_query_args(url)["id"][0]
self.logger.debug(
"Created Folder (subject search): %r, id=%r", name, id_
)
self.add_link(Folder(name, section, real_url, icon_url, self, id_))
elif "forum" in url:
self.logger.debug("Created Forum (subject search): %r, %s", name, url)
self.add_link(ForumList(name, section, url, icon_url, self))
elif "chat" in url:
self.logger.debug("Created Chat (subject search): %r, %s", name, url)
self.add_link(Chat(name, section, url, icon_url, self))
elif "page" in url:
self.logger.debug("Created Page (subject search): %r, %s", name, url)
self.add_link(Page(name, section, url, icon_url, self))
elif "url" in url:
self.logger.debug("Created Page (subject search): %r, %s", name, url)
self.add_link(Url(name, section, url, icon_url, self))
elif "assign" in url:
self.logger.debug(
"Created Delivery (subject search): %r, %s", name, url
)
self.add_link(Delivery(name, section, url, icon_url, self))
elif "kalvidres" in url:
self.logger.debug(
"Created Kalvidres (subject search): %r, %s", name, url
)
self.add_link(Kalvidres(name, section, url, icon_url, self))
elif "quiz" in url:
self.logger.debug("Created Quiz (subject search): %r, %s", name, url)
self.add_link(Quiz(name, section, url, icon_url, self))
elif "collaborate" in url:
self.logger.debug(
"Created Blackboard (subject search): %r, %s", name, url
)
self.add_link(BlackBoard(name, section, url, icon_url, self))
self.logger.debug("Downloading files for subject %r", self.name)
def test_get(self):
conn = Connection()
conn.get(self.url)
self.downloader_m.return_value.get.assert_called_once_with(self.url)
class BaseLink(_Notify):
"""Base class for Links."""
def __init__(self, name, section, url, icon_url, subject, parent=None):
"""
Args:
name (str): name of the url.
url (str): URL of the url.
icon_url (str or None): URL of the icon.
subject (vcm.subject.Subject): subject of the url.
parent (BaseLink): object that created self.
"""
self.name = name.strip()
self.section = section
self.url = url
self.icon_url = icon_url
self.subject = subject
self.connection = Connection()
self.parent = parent
self.response: Response = None
self.soup: BeautifulSoup = None
self.filepath: Path = None
self.redirect_url = None
self.response_name = None
self.subfolders = []
self.logger = logging.getLogger(__name__)
self.logger.debug(
"Created %s(name=%r, url=%r, subject=%r)",
self.__class__.__name__,
self.name,
self.url,
self.subject.name,
)
@property
def content_disposition(self):
if self.response is None:
raise RuntimeError("Response not made yet")
return unidecode.unidecode(
self.response.headers["Content-Disposition"])
def append_subfolder(self, dirname):
dirname = secure_filename(dirname)
return self.subfolders.append(dirname)
def insert_subfolder(self, index, dirname):
dirname = secure_filename(dirname)
return self.subfolders.insert(index, dirname)
def create_subfolder(self):
"""Creates the subfolder, if it is configured."""
self.create_subject_folder()
if not self.filepath:
self.autoset_filepath()
folder: Path = self.filepath.parent
if not folder.exists():
os.makedirs(folder.as_posix(), exist_ok=True)
self.logger.debug("Created subfolder %r", folder.as_posix())
else:
self.logger.debug("Subfolder already exists %r", folder.as_posix())
@staticmethod
def _process_filename(filepath: str):
"""Quits some characters from the filename that can not be in a filepath.
Args:
filepath (st): filepath to process.
Returns:
str: filepath processed.
"""
filepath = filepath.replace(">", " mayor que ")
filepath = filepath.replace("<", " menor que ")
return filepath
@staticmethod
def _filename_to_ext(filename):
"""Returns the extension given a filename."""
return Path(filename).suffix[1:]
def _get_ext_from_response(self):
"""Returns the extension of the filename of the response, got from the Content-Dispotition
HTTP header.
Returns:
str: the extension.
"""
if self.response_name is not None:
return self._filename_to_ext(self.response_name)
try:
# unidecode.unidecode is used to remove accents.
self.response_name = Patterns.FILENAME.search(
self.content_disposition).group(1)
extension = self._filename_to_ext(self.response_name)
if extension:
return extension
except KeyError:
pass
self.response_name = Path(self.url).name
extension = self._filename_to_ext(self.response_name)
if extension:
return extension
return self.content_type.split("/")[-1]
def create_subject_folder(self):
"""Creates the subject's principal folder."""
return self.subject.create_folder()
def make_request(self):
"""Makes the request for the Link."""
self.logger.debug("Making request")
self.response = self.connection.get(self.redirect_url or self.url)
self.logger.debug("Response obtained [%d | %s]",
self.response.status_code, self.content_type)
if 500 <= self.response.status_code <= 599:
raise MoodleError(
f"Moodle server replied with {self.response.status_code}")
if self.response.status_code == 408:
self.logger.warning("Received response with code 408, retrying")
return self.make_request()
if not self.response.ok:
raise ResponseError(f"Got HTTP {self.response.status_code}")
def close_connection(self):
warnings.warn(
"Since streams are not used, this method should not be called",
DeprecationWarning,
)
self.logger.debug("Closing connection")
self.response.close()
def process_request_bs4(self):
"""Parses the response with BeautifulSoup with the html parser."""
self.logger.debug("Parsing response (bs4)")
self.soup = BeautifulSoup(self.response.text, "html.parser")
self.logger.debug("Response parsed (bs4)")
def autoset_filepath(self):
"""Determines the filepath of the Link."""
if self.filepath is not None:
self.logger.debug("Filepath is setted, skipping (%s)",
self.filepath)
return
if self.response is None:
raise RuntimeError("Request not launched")
filename = secure_filename(
self._process_filename(self.name) + "." +
self._get_ext_from_response())
self.logger.debug("Initial filename: %s", filename)
temp_filepath = self.subject.folder
if self.subfolders:
temp_filepath.joinpath(*self.subfolders)
if self.section:
temp_filepath /= self.section.name
temp_filepath /= filename
try:
folder_id = self.id
except AttributeError:
folder_id = None
self.filepath = Path(
Alias.id_to_alias(
sha1(self.url.encode()).hexdigest(), temp_filepath.as_posix(),
folder_id))
self.logger.debug("Set filepath: %r", self.filepath.as_posix())
def download(self):
"""Wrapper for self.do_download()."""
try:
self.do_download()
finally:
self.response = None
self.soup = None
def do_download(self):
"""Abstract method to download the Link. Must be overridden by subclasses."""
self.logger.debug("Called do_download() but it was not implemented")
raise NotImplementedError
def get_header_length(self):
try:
return int(self.response.headers["Content-Length"])
except KeyError:
return len(self.response.content)
@property
def content_type(self):
if "Content-Type" in self.response.headers:
return self.response.headers["Content-Type"]
return None
def save_response_content(self):
"""Saves the response content to the disk."""
if self.filepath is None:
self.autoset_filepath()
if Modules.current() == Modules.notify:
return
self.create_subfolder()
self.logger.debug("filepath in REAL_FILE_CACHE: %s", self.filepath
in REAL_FILE_CACHE)
if self.filepath in REAL_FILE_CACHE:
if REAL_FILE_CACHE[self.filepath] == self.get_header_length():
self.logger.debug("File found in cache: Same content (%d)",
len(self.response.content))
return
self.logger.debug(
"File found in cache: Different content (%d --> %d)",
REAL_FILE_CACHE[self.filepath],
len(self.response.content),
)
Results.print_updated(self.filepath)
else:
self.logger.debug(
"File added to cache: %s [%d]",
self.filepath,
len(self.response.content),
)
REAL_FILE_CACHE[self.filepath] = len(self.response.content)
Results.print_new(self.filepath)
try:
with self.filepath.open("wb") as file_handler:
file_handler.write(self.response.content)
self.logger.debug("File downloaded and saved: %s", self.filepath)
except PermissionError:
self.logger.warning(
"File couldn't be downloaded due to permission error: %s",
self.filepath.name,
)
self.logger.warning("Permission error %s -- %s", self.subject.name,
self.filepath.name)
@staticmethod
def ensure_origin(url: str) -> bool:
"""Returns True if the origin is the virtual campus."""
return "uva.es" in url
