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[ssl-issues] sslv3 alert handshake failure on Debian System #330
[ssl-issues] sslv3 alert handshake failure on Debian System #330
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After experiencing #323 I switched to your project as it seems to be better maintained and downloaded the master branch. The problem is not fixed for me. But if I replace «AUTH_URL_V3» by «AUTH_URL» in coockies.py, line 116 I can use the downloader.
Unmodified master branch output:
$ ./coursera-dl --clear-cache -n ~/.netrc globalaffairsfinal-001 Downloading class: globalaffairsfinal-001 Starting new HTTPS connection (1): class.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Starting new HTTPS connection (1): www.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Traceback (most recent call last): File "./coursera-dl", line 6, in coursera_dl.main() File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 932, in main result = download_class(args, class_name) File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 828, in download_class username=args.username, password=args.password File "/home/lobo32/coursera-dl/coursera/cookies.py", line 339, in get_cookies_for_class get_authentication_cookies(session, class_name, username, password) File "/home/lobo32/coursera-dl/coursera/cookies.py", line 162, in get_authentication_cookies login(session, username, password, class_name=class_name) File "/home/lobo32/coursera-dl/coursera/cookies.py", line 117, in login headers=headers, allow_redirects=False) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 507, in post return self.request('POST', url, data=data, json=json, **kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 464, in request resp = self.send(prep, **send_kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 576, in send r = adapter.send(request, **kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/adapters.py", line 431, in send raise SSLError(e, request=request) requests.exceptions.SSLError: [Errno 1] _ssl.c:504: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure The text was updated successfully, but these errors were encountered:
The version of the python Debian package is 2.7.3-4+deb7u1. It is the current version in Debian Wheezy. But soon Debian Jessie will become stable which means that I (as well as many other Debian users) will upgrade and then have python 2.7.9.
$ python Python 2.7.3 (default, Mar 13 2014, 11:03:55) [GCC 4.7.2] on linux2 On Apr 04 2015, MatthiasJaeger wrote:
After experiencing #323 I switched to your project as it seems to be
better maintained and downloaded the master branch.
Oh, super nice. I’ll take that as a compliment! 🙂
The problem is not fixed for me. But if I replace «AUTH_URL_V3» by
«AUTH_URL» in coockies.py, line 116 I can use the downloader.
OK. I will see what I can do. I do have interest in having even older
version of Debian working, but I am 100% of the time working with Debian
testing or unstable (I am a Debian Maintainer myself).
So you said that substituting AUTH_URL_V3 with AUTH_URL makes things work
again for you? Usually, these problems with SSL happen deep down in
OpenSSL, but some can be worked around in Python. If that’s the case, then I
may change things (or, at least, create a command-line option for users to
select which auth URL to use).
Do you happen to use any on-demand course or only regular ones? I’m just
checking since coursera is a moving target and we essentially have to follow
what they do there.
I have modified my local copy to use AUTH_URL instead of AUTH_URL_V3 and, as you suggested, things seem to work fine for me. But I guess that I am not really a valuable data point, since I was unaffected by Coursera’s removal of SSLv3 (read: everything used to work fine with me either way).
It would be nice to have more people testing these changes before I go ahead and commit a change to our repository.
Hi. I have a really hard time getting coursera-dl to work again and I’m running out of ideas.
I still get «urlopen error [Errno 1] _ssl.c:510: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure» when trying to get anything.
- I upgraded to Linux Mint 17.1 Rebecca (Ubuntu 14.04 LTS)
- I built python 2.7.9 from source (python -V : Python 2.7.9)
- I tried updating coursera-dl with pip : sudo -H pip install coursera-dl -U
- I tried cloning this repository but cannot get it to work : ./coursera-dl -> «ImportError: No module named requests» (and yes, everything is already up to date with «sudo -H pip install -r requirements.txt -U»)
- I installed lot’s of stuff from various posts (stackoverflow, . )
Please, tell me what to do in order to resume downloading my 70+ courses !
Please tell me if there is anything else I can test to help you. I originally tested it on a normal course and a final project.
Now I also tried testing it for an on-demand course. It shows the same problem, but even after substituting AUTH_URL_V3 with AUTH_URL this doesn’t work and a simmilar problem seems to arrise from a different source. But since I never tried before and therefore never successfully downloaded a on-demand course I might be doing something wrong there . The test and output with AUTH_URL_V3 :
$ ./coursera-dl --clear-cache --on-demand -n .netrc learn-chinese Downloading class: learn-chinese Starting new HTTPS connection (1): www.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Traceback (most recent call last): File "./coursera-dl", line 6, in coursera_dl.main() File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 930, in main result = download_on_demand_class(args, class_name) File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 873, in download_on_demand_class login(session, args.username, args.password) File "/home/lobo32/coursera-dl/coursera/cookies.py", line 117, in login headers=headers, allow_redirects=False) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 507, in post return self.request('POST', url, data=data, json=json, **kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 464, in request resp = self.send(prep, **send_kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 576, in send r = adapter.send(request, **kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/adapters.py", line 431, in send raise SSLError(e, request=request) requests.exceptions.SSLError: [Errno 1] _ssl.c:504: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure The test and output with AUTH_URL :
./coursera-dl --clear-cache --on-demand -n .netrc learn-chinese Downloading class: learn-chinese Starting new HTTPS connection (1): accounts.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Logged in on coursera.org. Starting new HTTPS connection (1): www.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Traceback (most recent call last): File "./coursera-dl", line 6, in coursera_dl.main() File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 930, in main result = download_on_demand_class(args, class_name) File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 876, in download_on_demand_class page = get_on_demand_syllabus(session, class_name) File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 202, in get_on_demand_syllabus page = get_page(session, url) File "/home/lobo32/coursera-dl/coursera/coursera_dl.py", line 129, in get_page r = session.get(url) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 476, in get return self.request('GET', url, **kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 464, in request resp = self.send(prep, **send_kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 576, in send r = adapter.send(request, **kwargs) File "/usr/local/lib/python2.7/dist-packages/requests/adapters.py", line 431, in send raise SSLError(e, request=request) requests.exceptions.SSLError: [Errno 1] _ssl.c:504: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure While set to AUTH_URL and downloading a normal course it works but it produces warning messages for insecure connections:
$ ./coursera-dl -n .netrc globalaffairsfinal-001 Downloading class: globalaffairsfinal-001 Starting new HTTPS connection (1): class.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Starting new HTTPS connection (1): accounts.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Logged in on coursera.org. Starting new HTTPS connection (1): class.coursera.org /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. InsecurePlatformWarning Found authentication cookies. Downloaded https://class.coursera.org/globalaffairsfinal-001/lecture/index (24771 bytes) (. )