Add option `--netrc-location`

Closes #792, #963

.gitignore

@@ -3,6 +3,7 @@
 *.spec
 cookies
 *cookies.txt
+.netrc
 
 # Downloaded
 *.srt

README.md

@@ -695,6 +695,9 @@ Then simply run `make`. You can also run `make yt-dlp` instead to compile only t
                                      out, yt-dlp will ask interactively
     -2, --twofactor TWOFACTOR        Two-factor authentication code
     -n, --netrc                      Use .netrc authentication data
+    --netrc-location PATH            Location of .netrc authentication data;
+                                     either the path or its containing
+                                     directory. Defaults to ~/.netrc
     --video-password PASSWORD        Video password (vimeo, youku)
     --ap-mso MSO                     Adobe Pass multiple-system operator (TV
                                      provider) identifier, use --ap-list-mso for
@@ -923,14 +926,14 @@ You can use `--ignore-config` if you want to disable all configuration files for
 
 ### Authentication with `.netrc` file
 
-You may also want to configure automatic credentials storage for extractors that support authentication (by providing login and password with `--username` and `--password`) in order not to pass credentials as command line arguments on every yt-dlp execution and prevent tracking plain text passwords in the shell command history. You can achieve this using a [`.netrc` file](https://stackoverflow.com/tags/.netrc/info) on a per extractor basis. For that you will need to create a `.netrc` file in your `$HOME` and restrict permissions to read/write by only you:
+You may also want to configure automatic credentials storage for extractors that support authentication (by providing login and password with `--username` and `--password`) in order not to pass credentials as command line arguments on every yt-dlp execution and prevent tracking plain text passwords in the shell command history. You can achieve this using a [`.netrc` file](https://stackoverflow.com/tags/.netrc/info) on a per extractor basis. For that you will need to create a `.netrc` file in `--netrc-location` and restrict permissions to read/write by only you:
 ```
 touch $HOME/.netrc
 chmod a-rwx,u+rw $HOME/.netrc
 ```
 After that you can add credentials for an extractor in the following format, where *extractor* is the name of the extractor in lowercase:
 ```
-machine <extractor> login <login> password <password>
+machine <extractor> login <username> password <password>
 ```
 For example:
 ```
@@ -939,10 +942,7 @@ machine twitch login my_twitch_account_name password my_twitch_password
 ```
 To activate authentication with the `.netrc` file you should pass `--netrc` to yt-dlp or place it in the [configuration file](#configuration).
 
-On Windows you may also need to setup the `%HOME%` environment variable manually. For example:
+The default location of the .netrc file is `$HOME` (`~`) in UNIX. On Windows, it is `%HOME%` if present, `%USERPROFILE%` (generally `C:\Users\<user name>`) or `%HOMEDRIVE%%HOMEPATH%`
-```
-set HOME=%USERPROFILE%
-```
 
 # OUTPUT TEMPLATE
 

yt_dlp/__init__.py

@@ -575,6 +575,7 @@ def _real_main(argv=None):
 
     ydl_opts = {
         'usenetrc': opts.usenetrc,
+        'netrc_location': opts.netrc_location,
         'username': opts.username,
         'password': opts.password,
         'twofactor': opts.twofactor,

yt_dlp/extractor/common.py

@@ -18,6 +18,7 @@ from ..compat import (
     compat_cookies_SimpleCookie,
     compat_etree_Element,
     compat_etree_fromstring,
+    compat_expanduser,
     compat_getpass,
     compat_http_client,
     compat_os_name,
@@ -1166,7 +1167,10 @@ class InfoExtractor(object):
 
         if self.get_param('usenetrc', False):
             try:
-                info = netrc.netrc().authenticators(netrc_machine)
+                netrc_file = compat_expanduser(self.get_param('netrc_location') or '~')
+                if os.path.isdir(netrc_file):
+                    netrc_file = os.path.join(netrc_file, '.netrc')
+                info = netrc.netrc(file=netrc_file).authenticators(netrc_machine)
                 if info is not None:
                     username = info[0]
                     password = info[2]

yt_dlp/options.py

@@ -478,6 +478,10 @@ def parseOpts(overrideArguments=None):
         '-n', '--netrc',
         action='store_true', dest='usenetrc', default=False,
         help='Use .netrc authentication data')
+    authentication.add_option(
+        '--netrc-location',
+        dest='netrc_location', metavar='PATH',
+        help='Location of .netrc authentication data; either the path or its containing directory. Defaults to ~/.netrc')
     authentication.add_option(
         '--video-password',
         dest='videopassword', metavar='PASSWORD',