mirror of
https://github.com/python-telegram-bot/python-telegram-bot.git
synced 2024-10-23 17:36:26 +02:00
154 lines
4.5 KiB
Python
154 lines
4.5 KiB
Python
#!/usr/bin/env python
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try:
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from email.generator import _make_boundary as choose_boundary
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from urllib.request import urlopen
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from io import BufferedReader as file
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except ImportError:
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from mimetools import choose_boundary
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from urllib2 import urlopen
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import mimetypes
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import os
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import re
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import sys
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from .error import TelegramError
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DEFAULT_MIME_TYPE = 'application/octet-stream'
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USER_AGENT = 'Python Telegram Bot' \
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' (https://github.com/leandrotoledo/python-telegram-bot)'
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class InputFile(object):
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def __init__(self,
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data):
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self.data = data
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self.boundary = choose_boundary()
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if 'audio' in data:
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self.input_name = 'audio'
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self.input_file = data.pop('audio')
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if 'document' in data:
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self.input_name = 'document'
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self.input_file = data.pop('document')
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if 'photo' in data:
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self.input_name = 'photo'
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self.input_file = data.pop('photo')
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if 'video' in data:
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self.input_name = 'video'
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self.input_file = data.pop('video')
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if isinstance(self.input_file, file):
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self.input_file_content = self.input_file.read()
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self.filename = os.path.basename(self.input_file.name)
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self.mimetype = mimetypes.guess_type(self.filename)[0] or \
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DEFAULT_MIME_TYPE
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if 'http' in self.input_file:
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self.input_file_content = urlopen(self.input_file).read()
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self.mimetype = InputFile.is_image(self.input_file_content)
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self.filename = self.mimetype.replace('/', '.')
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@property
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def headers(self):
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return {'User-agent': USER_AGENT,
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'Content-type': self.content_type}
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@property
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def content_type(self):
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return 'multipart/form-data; boundary=%s' % self.boundary
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def to_form(self):
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form = []
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form_boundary = '--' + self.boundary
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# Add data fields
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for name, value in self.data.items():
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form.extend([
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form_boundary,
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'Content-Disposition: form-data; name="%s"' % name,
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'',
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str(value)
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])
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# Add input_file to upload
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form.extend([
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form_boundary,
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'Content-Disposition: form-data; name="%s"; filename="%s"' % (
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self.input_name, self.filename
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),
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'Content-Type: %s' % self.mimetype,
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'',
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self.input_file_content
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])
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form.append('--' + self.boundary + '--')
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form.append('')
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return self._parse(form)
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def _parse(self, form):
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if sys.version_info > (3,):
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# on Python 3 form needs to be byte encoded
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encoded_form = []
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for item in form:
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try:
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encoded_form.append(item.encode())
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except AttributeError:
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encoded_form.append(item)
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return b'\r\n'.join(encoded_form)
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return '\r\n'.join(form)
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@staticmethod
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def is_image(stream):
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"""Check if the content file is an image by analyzing its headers.
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Args:
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stream:
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A str representing the content of a file.
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Returns:
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The str mimetype of an image.
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"""
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try:
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header = stream[:10]
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if re.match(b'GIF8', header):
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return 'image/gif'
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if re.match(b'\x89PNG', header):
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return 'image/png'
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if re.match(b'\xff\xd8\xff\xe0\x00\x10JFIF', header) or \
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re.match(b'\xff\xd8\xff\xe1(.*){2}Exif', header):
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return 'image/jpeg'
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except IndexError as e:
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raise TelegramError(str(e))
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raise TelegramError({'message': 'Could not parse file content'})
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@staticmethod
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def is_inputfile(data):
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"""Check if the request is a file request
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Args:
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data:
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A dict of (str, unicode) key/value pairs
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Returns:
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bool
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"""
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if data:
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file_types = ['audio', 'document', 'photo', 'video']
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file_type = [i for i in list(data.keys()) if i in file_types]
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if file_type:
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file_content = data[file_type[0]]
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if file_type[0] == 'photo':
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return isinstance(file_content, file) or \
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str(file_content).startswith('http')
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return isinstance(file_content, file)
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return False
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