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caldavcli.py
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caldavcli.py
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#!/bin/env python3
"""
caldavcli.py
--host apps.kolabnow.com
--user user@kolab.org --password Secret
--verbose
list --folder Calendar
"""
import argparse
import base64
import http.client
import urllib.parse
import ssl
import xml.etree.ElementTree as ET
from xml.dom import minidom
def http_request(url, method, params=None, headers=None, body=None):
"""
Perform an HTTP request.
"""
parsed_url = urllib.parse.urlparse(url)
if url.startswith('https://'):
conn = http.client.HTTPSConnection(parsed_url.netloc, 443, context = ssl._create_unverified_context())
else:
conn = http.client.HTTPConnection(parsed_url.netloc, 80)
if params is None:
params = {}
if headers is None:
headers = {
"Content-Type": "application/x-www-form-urlencoded; charset=utf-8"
}
if body is None:
body = urllib.parse.urlencode(params)
# Assemble a relative url
url = urllib.parse.urlunsplit(["", "", parsed_url.path, parsed_url.query, parsed_url.fragment])
print(f"Requesting {url} From {parsed_url.netloc} Using {method}")
conn.request(method, url, body, headers)
response = conn.getresponse()
# Handle redirects
if response.status in (301, 302):
# print("Following redirect ", response.getheader('location', ''))
return http_request(
urllib.parse.urljoin(url, response.getheader('location', '')),
method,
params,
headers,
body)
if response.status not in (200, 207):
print(" ", "Status", response.status)
print(" ", response.read().decode())
return response
def basic_auth_headers(username, password):
user_and_pass = base64.b64encode(
f"{username}:{password}".encode("ascii")
).decode("ascii")
return {
"Authorization": "Basic {}".format(user_and_pass)
}
class CalDAV:
def __init__(self, options):
self.host = options.host
self.username = options.user
self.password = options.password
self.verbose = options.verbose
if hasattr(options, 'folder') and options.folder:
self.folder = options.folder
else:
self.folder = None
if hasattr(options, 'href') and options.href:
self.href = options.href
else:
self.href = None
def send_request(self, url, method, body = None):
headers = {
"Content-Type": "application/xml; charset=utf-8",
"Depth": "infinity",
**basic_auth_headers(self.username, self.password)
}
return http_request(
url,
method,
None,
headers,
body
)
def check(self):
body = '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>'
response = self.send_request(
f"https://{self.host}/principals/{self.username}/",
"PROPFIND",
body
)
success = response.status == 207
if not success:
print("=> Error: Caldav is not available")
if self.verbose or not success:
print(" ", "Status", response.status)
print(" ", response.read().decode())
return success
def show(self, href):
body = """
<c:calendar-multiget xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav" xmlns:cs="https://calendarserver.org/ns/">
<d:prop>
<d:getetag />
<c:calendar-data />
</d:prop>
<d:href>{href}</d:href>
</c:calendar-multiget>
""".replace(' ', '').replace('\n', '').format(href=href)
response = self.send_request(
f"https://{self.host}{href}",
"REPORT",
body
)
assert response.status == 207
result = response.read().decode()
root = ET.fromstring(result)
print(minidom.parseString(ET.tostring(root)).toprettyxml(indent=" "))
def fetch(self, href):
response = self.send_request(
f"https://{self.host}{href}",
"PROPFIND"
)
assert response.status == 207
result = response.read().decode()
root = ET.fromstring(result)
if self.verbose:
print(minidom.parseString(ET.tostring(root)).toprettyxml(indent=" "))
def list(self):
body = '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>'
response = self.send_request(
f"https://{self.host}/calendars/{self.username}/",
"PROPFIND",
body
)
assert response.status == 207
result = response.read().decode()
root = ET.fromstring(result)
if self.verbose:
print(minidom.parseString(ET.tostring(root)).toprettyxml(indent=" "))
xmlns = "DAV:"
for add in root.findall(f".//{{{xmlns}}}response"):
displayName = add.find(f".//{{{xmlns}}}displayname").text
href = add.find(f".//{{{xmlns}}}href").text
print("DisplayName", displayName)
print("href", href)
if self.folder and displayName == self.folder:
self.fetch(href)
if self.href and href == self.href:
self.fetch(href)
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--host", help="Host")
parser.add_argument("--user", help="Username")
parser.add_argument("--password", help="User password")
parser.add_argument("--verbose", action='store_true', help="Verbose output")
subparsers = parser.add_subparsers()
parser_list = subparsers.add_parser('list')
parser_list.add_argument("--folder", help="Folder")
parser_list.add_argument("--href", help="Match by href")
parser_list.set_defaults(func=lambda args: CalDAV(args).list())
parser_list = subparsers.add_parser('show')
parser_list.add_argument("--href", help="Match by href")
parser_list.set_defaults(func=lambda args: CalDAV(args).show(args.href))
parser_check = subparsers.add_parser('check')
parser_check.set_defaults(func=lambda args: CalDAV(args).check())
options = parser.parse_args()
if 'func' in options:
options.func(options)
if __name__ == "__main__":
main()

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