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"@_requires_login" for logged-in-only methods
Methods in Instaloader class can now be prefixed with @_requires_login decorator to ensure they are only called if logged in, otherwise LoginRequiredException is raised.
This commit is contained in:
Alexander Graf
parent
b0a8bfbcf4
commit
a9fb254d76
@ -550,7 +550,7 @@ class Profile:
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"""Get Posts that are marked as saved by the user."""
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if self.username != self._instaloader.username:
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return
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raise LoginRequiredException("--login={} required to get that profile's saved posts.".format(self.username))
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data = self._metadata
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@ -591,6 +591,15 @@ class Tristate(Enum):
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always = 2
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def _requires_login(func: Callable) -> Callable:
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"""Decorator to raise an exception if herewith-decorated function is called without being logged in"""
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def call(instaloader, *args, **kwargs):
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if not instaloader.is_logged_in:
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raise LoginRequiredException("--login=USERNAME required.")
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return func(instaloader, *args, **kwargs)
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return call
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class Instaloader:
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GRAPHQL_PAGE_LENGTH = 200
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@ -890,6 +899,7 @@ class Instaloader:
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else:
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break
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@_requires_login
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def get_followers(self, profile: str) -> Iterator[Dict[str, Any]]:
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"""
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Retrieve list of followers of given profile.
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@ -902,6 +912,7 @@ class Instaloader:
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'https://www.instagram.com/' + profile + '/',
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lambda d: d['data']['user']['edge_followed_by'])
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@_requires_login
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def get_followees(self, profile: str) -> Iterator[Dict[str, Any]]:
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"""
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Retrieve list of followees (followings) of given profile.
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@ -1062,6 +1073,7 @@ class Instaloader:
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os.utime(filename, (datetime.now().timestamp(), date_object.timestamp()))
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self._log('') # log output of _get_and_write_raw() does not produce \n
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@_requires_login
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def save_session_to_file(self, filename: Optional[str] = None) -> None:
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"""Saves internally stored :class:`requests.Session` object."""
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if filename is None:
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@ -1210,6 +1222,7 @@ class Instaloader:
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self._log()
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return downloaded
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@_requires_login
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def get_stories(self, userids: Optional[List[int]] = None) -> Iterator[Dict[str, Any]]:
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"""Get available stories from followees or all stories of users whose ID are given.
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Does not mark stories as seen.
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@ -1245,6 +1258,7 @@ class Instaloader:
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for user in data["tray"]:
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yield user if "items" in user else _get(url_reel_media.format(user['user']['pk']))
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@_requires_login
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def download_stories(self,
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userids: Optional[List[int]] = None,
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fast_update: bool = False,
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@ -1259,13 +1273,13 @@ class Instaloader:
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:param filename_target: Replacement for {target} in dirname_pattern and filename_pattern
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"""
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if not userids:
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self._log("Retrieving all visible stories...")
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if format_string_contains_key(self.filename_pattern, 'post'):
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raise InvalidArgumentException("The \"post\" keyword is not supported in the filename pattern when "
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"downloading stories.")
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if not self.is_logged_in:
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raise LoginRequiredException('Login required to download stories')
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for user_stories in self.get_stories(userids):
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if "items" not in user_stories:
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raise BadResponseException('Bad reel media JSON.')
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@ -1331,6 +1345,7 @@ class Instaloader:
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self._log()
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return downloaded
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@_requires_login
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def get_feed_posts(self) -> Iterator[Post]:
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"""Get Posts of the user's feed."""
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@ -1351,6 +1366,7 @@ class Instaloader:
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'fetch_like': 10,
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'has_stories': False})["data"]
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@_requires_login
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def download_feed_posts(self, max_count: int = None, fast_update: bool = False,
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filter_func: Optional[Callable[[Post], bool]] = None) -> None:
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"""
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@ -1367,6 +1383,7 @@ class Instaloader:
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:param fast_update: If true, abort when first already-downloaded picture is encountered
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:param filter_func: function(post), which returns True if given picture should be downloaded
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"""
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self._log("Retrieving pictures from your feed...")
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count = 1
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for post in self.get_feed_posts():
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if max_count is not None and count > max_count:
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@ -1382,6 +1399,7 @@ class Instaloader:
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if fast_update and not downloaded:
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break
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@_requires_login
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def download_saved_posts(self, max_count: int = None, fast_update: bool = False,
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filter_func: Optional[Callable[[Post], bool]] = None) -> None:
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"""Download user's saved pictures.
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@ -1390,6 +1408,7 @@ class Instaloader:
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:param fast_update: If true, abort when first already-downloaded picture is encountered
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:param filter_func: function(post), which returns True if given picture should be downloaded
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"""
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self._log("Retrieving saved posts...")
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count = 1
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for post in Profile(self, self.username).get_saved_posts():
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if max_count is not None and count > max_count:
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@ -1429,6 +1448,7 @@ class Instaloader:
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:param fast_update: If true, abort when first already-downloaded picture is encountered
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"""
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hashtag = hashtag.lower()
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self._log("Retrieving pictures with hashtag {}...".format(hashtag))
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count = 1
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for post in self.get_hashtag_posts(hashtag):
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if max_count is not None and count > max_count:
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@ -1573,7 +1593,7 @@ class Instaloader:
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print(err, file=sys.stderr)
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password = None
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def main(self, profilelist: List[str], username: Optional[str] = None, password: Optional[str] = None,
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def main(self, targetlist: List[str], username: Optional[str] = None, password: Optional[str] = None,
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sessionfile: Optional[str] = None, max_count: Optional[int] = None,
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profile_pic: bool = True, profile_pic_only: bool = False,
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fast_update: bool = False,
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@ -1601,57 +1621,34 @@ class Instaloader:
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self.interactive_login(username)
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self._log("Logged in as %s." % username)
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# Try block for KeyboardInterrupt (save session on ^C)
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targets = set()
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profiles = set()
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try:
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# Generate set of targets
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for pentry in profilelist:
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if pentry[0] == '#':
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self._log("Retrieving pictures with hashtag {0}".format(pentry))
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with self._error_catcher():
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self.download_hashtag(hashtag=pentry[1:], max_count=max_count, fast_update=fast_update,
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# Generate set of profiles, already downloading non-profile targets
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for target in targetlist:
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with self._error_catcher(target):
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if target[0] == '#':
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self.download_hashtag(hashtag=target[1:], max_count=max_count, fast_update=fast_update,
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filter_func=filter_func)
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elif pentry[0] == '@':
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if username is not None:
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self._log("Retrieving followees of %s..." % pentry[1:])
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with self._error_catcher():
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followees = self.get_followees(pentry[1:])
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targets.update([followee['username'] for followee in followees])
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elif target == ":feed":
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self.download_feed_posts(fast_update=fast_update, max_count=max_count,
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filter_func=filter_func)
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elif target == ":stories":
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self.download_stories(fast_update=fast_update)
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elif target == ":saved":
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self.download_saved_posts(fast_update=fast_update, max_count=max_count,
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filter_func=filter_func)
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else:
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self.error("--login=USERNAME required to download {}.".format(pentry))
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elif pentry == ":feed":
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if username is not None:
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self._log("Retrieving pictures from your feed...")
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with self._error_catcher():
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self.download_feed_posts(fast_update=fast_update, max_count=max_count,
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filter_func=filter_func)
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else:
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self.error("--login=USERNAME required to download {}.".format(pentry))
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elif pentry == ":stories":
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if username is not None:
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with self._error_catcher():
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self.download_stories(fast_update=fast_update)
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else:
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self.error("--login=USERNAME required to download {}.".format(pentry))
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elif pentry == ":saved":
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if username is not None:
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self._log("Retrieving saved posts...")
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with self._error_catcher():
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self.download_saved_posts(fast_update=fast_update, max_count=max_count,
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filter_func=filter_func)
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else:
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self.error("--login=USERNAME required to download {}.".format(pentry))
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else:
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targets.add(pentry)
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if len(targets) > 1:
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self._log("Downloading {} profiles: {}".format(len(targets), ','.join(targets)))
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# Iterate through targets list and download them
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for target in targets:
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with self._error_catcher():
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profiles.add(target)
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if len(profiles) > 1:
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self._log("Downloading {} profiles: {}".format(len(profiles), ','.join(profiles)))
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# Iterate through profiles list and download them
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for target in profiles:
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with self._error_catcher(target):
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try:
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self.download_profile(target, profile_pic, profile_pic_only, fast_update, stories, stories_only,
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filter_func=filter_func)
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except ProfileNotExistsException as err:
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if username is not None:
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if not self.is_logged_in:
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self._log(err)
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self._log("Trying again anonymously, helps in case you are just blocked.")
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with self.anonymous_copy() as anonymous_loader:
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@ -1663,7 +1660,7 @@ class Instaloader:
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except KeyboardInterrupt:
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print("\nInterrupted by user.", file=sys.stderr)
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# Save session if it is useful
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if username is not None:
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if self.is_logged_in:
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self.save_session_to_file(sessionfile)
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if self.error_log:
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print("\nErrors occured:", file=sys.stderr)
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