Thread: crypto.py bug on server add form (button save) with python 3.5 -Can't convert 'bytes' object to str implicitly

I am running on following Gentoo system with Python 3.5 as default (although i have 2.7 and 3.4 available to switch as well). 

I compiled from source code via github:

commit 15cb9fc35b41736a331a452b9303a79e8f13ee36 (HEAD -> master, origin/master, origin/HEAD)

The error appears when I want to click on Save while adding new server to the list, I put few lines into the code to detect the times:

2017-06-27 13:21:48,329: DEBUG pgadmin: Not running under the desktop runtime, port: 5050

Starting pgAdmin 4. Please navigate to http://127.0.0.1:5050 in your browser.

str var python type is <class 'str'>

str var object's type is str

padding_string var python type is <class 'bytes'>

padding_string var object's type is bytes

2017-06-27 13:21:53,028: ERROR pgadmin: Can't convert 'bytes' object to str implicitly

Traceback (most recent call last):

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/browser/server_groups/servers/__init__.py", line 619, in create

    password = encrypt(password, current_user.password)

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py", line 31, in encrypt

    cipher = AES.new(pad(key), AES.MODE_CFB, iv)

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py", line 80, in pad

    return str + ((32 - len(str) % 32) * padding_string)

TypeError: Can't convert 'bytes' object to str implicitly

2017-06-27 13:21:53,031: INFO werkzeug: 127.0.0.1 - - [27/Jun/2017 13:21:53] "POST /browser/server/obj/2/ HTTP/1.1" 410 -

2017-06-27 13:22:49,936: INFO werkzeug: * Detected change in '/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py', reloading

2017-06-27 13:22:50,138: INFO werkzeug: * Restarting with reloader

So this is the error:

Can't convert 'bytes' object to str implicitly

To fix this on Python 3.5 I simply changed in pgadmin4/web/pgadmin/utils/crypto.py file this line:

return str + ((32 - len(str) % 32) * padding_string)

to

return str + ((32 - len(str) % 32) * padding_string.decode())

Another solution could be to change whole str into bytes. Not sure what is better, but now it works.

Hi,

Can you send the patch for the same. I think this is the valid fix.

Thanks,

Khushboo

On Tue, Jun 27, 2017 at 3:02 PM, Ladislav Jech <archenroot@gmail.com> wrote:

I am running on following Gentoo system with Python 3.5 as default (although i have 2.7 and 3.4 available to switch as well). 

I compiled from source code via github:

commit 15cb9fc35b41736a331a452b9303a79e8f13ee36 (HEAD -> master, origin/master, origin/HEAD)

The error appears when I want to click on Save while adding new server to the list, I put few lines into the code to detect the times:

2017-06-27 13:21:48,329: DEBUG pgadmin: Not running under the desktop runtime, port: 5050

Starting pgAdmin 4. Please navigate to http://127.0.0.1:5050 in your browser.

str var python type is <class 'str'>

str var object's type is str

padding_string var python type is <class 'bytes'>

padding_string var object's type is bytes

2017-06-27 13:21:53,028: ERROR pgadmin: Can't convert 'bytes' object to str implicitly

Traceback (most recent call last):

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/browser/server_groups/servers/__init__.py", line 619, in create

    password = encrypt(password, current_user.password)

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py", line 31, in encrypt

    cipher = AES.new(pad(key), AES.MODE_CFB, iv)

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py", line 80, in pad

    return str + ((32 - len(str) % 32) * padding_string)

TypeError: Can't convert 'bytes' object to str implicitly

2017-06-27 13:21:53,031: INFO werkzeug: 127.0.0.1 - - [27/Jun/2017 13:21:53] "POST /browser/server/obj/2/ HTTP/1.1" 410 -

2017-06-27 13:22:49,936: INFO werkzeug: * Detected change in '/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py', reloading

2017-06-27 13:22:50,138: INFO werkzeug: * Restarting with reloader

So this is the error:

Can't convert 'bytes' object to str implicitly

To fix this on Python 3.5 I simply changed in pgadmin4/web/pgadmin/utils/crypto.py file this line:

return str + ((32 - len(str) % 32) * padding_string)

to

return str + ((32 - len(str) % 32) * padding_string.decode())

Another solution could be to change whole str into bytes. Not sure what is better, but now it works.

Hi,

Please find the attached patch which will fix the password encryption/decryption for python3.

I have modified the fix suggested by Ladislav to work with both python2 and python3.

Thanks,

Khushboo

On Tue, Jun 27, 2017 at 4:41 PM, Ladislav Jech <archenroot@gmail.com> wrote:

Hi,

It will be good if you support fully github or any GIT repository for managing pull requests. Is there any or you wan't me to generate *.patch file? I am new to pgadmin 4, so not sure how this works. Let me know.

Ladislav

2017-06-27 11:52 GMT+02:00 Khushboo Vashi <khushboo.vashi@enterprisedb.com>:

Hi,

Can you send the patch for the same. I think this is the valid fix.

Thanks,

Khushboo

On Tue, Jun 27, 2017 at 3:02 PM, Ladislav Jech <archenroot@gmail.com> wrote:

I am running on following Gentoo system with Python 3.5 as default (although i have 2.7 and 3.4 available to switch as well). 

I compiled from source code via github:

commit 15cb9fc35b41736a331a452b9303a79e8f13ee36 (HEAD -> master, origin/master, origin/HEAD)

The error appears when I want to click on Save while adding new server to the list, I put few lines into the code to detect the times:

2017-06-27 13:21:48,329: DEBUG pgadmin: Not running under the desktop runtime, port: 5050

Starting pgAdmin 4. Please navigate to http://127.0.0.1:5050 in your browser.

str var python type is <class 'str'>

str var object's type is str

padding_string var python type is <class 'bytes'>

padding_string var object's type is bytes

2017-06-27 13:21:53,028: ERROR pgadmin: Can't convert 'bytes' object to str implicitly

Traceback (most recent call last):

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/browser/server_groups/servers/__init__.py", line 619, in create

    password = encrypt(password, current_user.password)

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py", line 31, in encrypt

    cipher = AES.new(pad(key), AES.MODE_CFB, iv)

  File "/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py", line 80, in pad

    return str + ((32 - len(str) % 32) * padding_string)

TypeError: Can't convert 'bytes' object to str implicitly

2017-06-27 13:21:53,031: INFO werkzeug: 127.0.0.1 - - [27/Jun/2017 13:21:53] "POST /browser/server/obj/2/ HTTP/1.1" 410 -

2017-06-27 13:22:49,936: INFO werkzeug: * Detected change in '/home/zangetsu/devel/tmp/pgadmin4/web/pgadmin/utils/crypto.py', reloading

2017-06-27 13:22:50,138: INFO werkzeug: * Restarting with reloader

So this is the error:

Can't convert 'bytes' object to str implicitly

To fix this on Python 3.5 I simply changed in pgadmin4/web/pgadmin/utils/crypto.py file this line:

return str + ((32 - len(str) % 32) * padding_string)

to

return str + ((32 - len(str) % 32) * padding_string.decode())

Another solution could be to change whole str into bytes. Not sure what is better, but now it works.