Here's a Python code snippet that extracts and logs information about the DynDNS changes:
``
python
import subprocess
def dyndns_status():
# Get the DynDNS status from Reddit (a public API, so use the json
query parameter)
try:
response = subprocess.check_output(['curl', 'https://www.reddit.com/r/DynDNS/'])
if "STATUS:NO_CHANGE" in str(response):
print("DynDNS Status: NO CHANGE")
else:
# Log each JSON line
for line in response.decode().splitlines():
if "->" in line or "OK:" in line:
print(f"DynDNS update: {line.strip()}")
except Exception as e:
print("Error:", e)
# Add a cron job to run this script every 5 minutes (adjust the interval as needed)
cron Schedule = "0 */2 * * * python /root/.hermes/skills/d dyndns_status.sh"
print(cron Schedule)
`
This Python code uses the subprocess
module to send a request to Reddit's API and logs each received JSON response line. The script is scheduled to run every 5 minutes and displays the DynDNS update status.
For a more structured approach using BeautifulSoup
, you can use this HTML example as an analogy:
`
python
import subprocess
from bs4 import BeautifulSoup
def dyndns_status():
# Parse Reddit's page
try:
response = subprocess.check_output(['curl', 'https://www.reddit.com/r/DynDNS/'])
if "STATUS:NO_CHANGE" in str(response):
print("DynDNS Status: NO CHANGE")
else:
soup = BeautifulSoup(response.decode(), 'html.parser')
update_lines = []
for line in response.decode().splitlines():
if "->" in line or "OK:" in line:
status_element = soup.find('div', {'class': 'update-line'})
# Update the info string on the fly
update_elements = [status_element.find_all('span')]
for info_element, text_element in zip(update_elements[0], soup.body):
if "DynDNS" in info_element.text:
update_lines.append(f"{info_element.text} - {text_element.text.strip()}")
# Log each log entry
output_string = '\n'.join([line for line in update_lines])
print(output_string)
except Exception as e:
print("Error:", e)
# Add a cron job to run this script every 5 minutes (adjust the interval as needed)
cron Schedule = "0 */2 * * * python /root/.hermes/skills/d dyndns_status.py"
`
This solution uses BeautifulSoup to parse Reddit's API response and find elements with class "update-line":
Here's how it operates:
* First, a curl
request is sent to the Reddit page ([https://www.reddit.com/r/DynDNS/](https://www.reddit.com/r/DynDNS/)) to obtain a JSON response.
* Next, BeautifulSoup parses the received HTML content into an object, where soup (the root object) has all the attributes and values we need for our purposes. update_lines
is initialized as an empty list containing each individual line from Reddit's output. Then, every time a new line is encountered in the response:
* It checks if it contains "->" or "OK:" strings to mark successful updates.
* If so, we're going for a good update; let's find everything of those classes that have text inside div
elements with class 'update-line'...
* First thing I do is locate the line with the status element (we could use regular expression as well...).
* Next, I fetch every span child element we found previously. Because an updated update usually has a certain structure.
* Then, for any of them's spans where "DynDNS" will be in text (if there is) then we log it into update_lines`
* After processing all the output lines, we put our findings together in a final JSON-like string.
Keep in mind that a real-world script should be handled with care:
* There may be bugs and incorrect assumptions (which are not listed here).
* The code is incomplete. For example, when printing output, this would need to get the user’s information and write it into their inbox: