getlist only works if the default language is English

[sboekhoff]

Running e.g. keytool -list -keystore your-keystore.jks returns:

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 11 entries

keypair9, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 8C:1D:A8:8B:F1:AA:7E:69:9E:81:E7:C4:0E:ED:0C:A9:9B:AE:BA:7A
keypair8, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): E9:D3:51:4C:2E:5B:49:EE:78:FA:12:1A:18:9E:5F:31:6E:91:18:EF
keypair7, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): B7:C9:3B:2E:77:8B:C1:99:6C:61:64:54:90:08:1A:9E:5F:65:B2:BF
keypair6, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 75:4C:06:AA:8D:AF:69:35:7D:AF:75:5C:B5:74:55:E2:70:A9:A6:02
keypair5, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 37:03:0E:7E:BD:B2:9D:26:DB:22:88:8C:57:95:E4:F4:44:24:DB:09
keypair4, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 11:36:F6:53:DC:3F:AC:C9:79:2D:BF:0A:90:BC:B8:D8:20:EA:BD:54
keypair3, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 75:CC:17:40:1A:B0:24:B8:19:B7:71:12:E8:ED:B8:35:FC:10:93:06
keypair2, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 5E:B5:75:F6:2D:C9:D0:E2:AC:48:5A:47:F4:C3:38:6C:16:BD:54:52
keypair1, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 84:DF:D9:88:BE:DB:E7:0C:54:F3:0F:5C:83:C9:10:75:DE:CF:4E:79
keypair0, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): BD:12:7B:B4:A6:00:37:E5:79:43:43:A9:D3:D3:9E:2F:F5:51:A4:29
keypair10, Sep 7, 2016, PrivateKeyEntry, 
Certificate fingerprint (SHA1): 06:8F:74:37:68:B4:75:AF:B2:81:F2:23:B2:7E:31:90:E2:AE:7C:52

If the default langue on the users system is e.g. German (export JAVA_TOOL_OPTIONS=-Duser.language=de) the output is:

Picked up JAVA_TOOL_OPTIONS: -Duser.language=de
Keystore-Kennwort eingeben:  

Keystore-Typ: JKS
Keystore-Provider: SUN

Keystore enthält 11 Einträge

keypair9, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 8C:1D:A8:8B:F1:AA:7E:69:9E:81:E7:C4:0E:ED:0C:A9:9B:AE:BA:7A
keypair8, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): E9:D3:51:4C:2E:5B:49:EE:78:FA:12:1A:18:9E:5F:31:6E:91:18:EF
keypair7, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): B7:C9:3B:2E:77:8B:C1:99:6C:61:64:54:90:08:1A:9E:5F:65:B2:BF
keypair6, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 75:4C:06:AA:8D:AF:69:35:7D:AF:75:5C:B5:74:55:E2:70:A9:A6:02
keypair5, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 37:03:0E:7E:BD:B2:9D:26:DB:22:88:8C:57:95:E4:F4:44:24:DB:09
keypair4, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 11:36:F6:53:DC:3F:AC:C9:79:2D:BF:0A:90:BC:B8:D8:20:EA:BD:54
keypair3, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 75:CC:17:40:1A:B0:24:B8:19:B7:71:12:E8:ED:B8:35:FC:10:93:06
keypair2, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 5E:B5:75:F6:2D:C9:D0:E2:AC:48:5A:47:F4:C3:38:6C:16:BD:54:52
keypair1, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 84:DF:D9:88:BE:DB:E7:0C:54:F3:0F:5C:83:C9:10:75:DE:CF:4E:79
keypair0, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): BD:12:7B:B4:A6:00:37:E5:79:43:43:A9:D3:D3:9E:2F:F5:51:A4:29
keypair10, 07.09.2016, PrivateKeyEntry, 
Zertifikat-Fingerprint (SHA1): 06:8F:74:37:68:B4:75:AF:B2:81:F2:23:B2:7E:31:90:E2:AE:7C:52

The parser of the -list-output in node-keytool (https://github.com/FrankGrimm/node-keytool/blob/master/lib/keytool.js#L176) uses language specific strings. See e.g.:

var PRE_STORETYPE = 'Keystore type: ';
var PRE_PROVIDER = 'Keystore provider: ';
var PRE_FINGERPRINT = 'Certificate fingerprint (';

Thus, parsing might not work on systems using a default language that is different from English.

A simple workaround is instantiating Keytool using extraargs:
For example use:

var store = Keytool(file, pass, {debug: false, storetype: 'JKS', extraargs: '-J-Duser.language=en'});

instead of:

var store = Keytool(file, pass, {debug: false, storetype: 'JKS'});