I have NVR from Dahua, and I have access to admin user on this device. Using this account I'm trying to get snapshots from IP cameras, connected to this NVR. According to dahua documentation, to do this, I can use this url link http://Usernameassword@IP-Address/cgi-bin/snapshot.cgi?channel=1 When i replace "username" etc with correct data, it works I can paste this link in my web browser, and it displays snapshot from chosen camera. Now I want to do the same in the python code, because those snapshots will be analised by neural network so I need them as python variable not as a picture in my browser. I wrote some simple code, which looks like this import requests from PIL import Image from io import BytesIO url = "http://usernameassword@ip_address/cgi-bin/snapshot.cgi?channel=10" response = requests.get(url) if response.status_code == 200: image = Image.open(BytesIO(response.content)) image.show() else: print(f" failed to download the image, respond from website: {response.status_code}") Obviously I used actual username, not "username". And I got error HTTP: 401, which means Unauthorized connection. Which is weird, because if I take this exact url, and copy it from my code to web browser, there is no problem with authorization. Eveything works I supose that this might be some sort of firewall blockade, or other security stuff happening in NVR configuration, that prevents me from connecting via python code. I also tried another authentication method, but got the same HTTP 401 respond session = requests.Session() session.auth = ('username', 'password') url = "http://ip_address/cgi-bin/snapshot.cgi?channel=10" response = session.get(url) I honestly don't know. I am Data Scientist, not web developer, nor cybersecurity expert, so my knowledge in these areas is very limited Continue reading...
