doas auth

[Alexander Hall]

I was inspired by a related mail to send out this doas auth diff again. 
Hopefully my phone won't ruin the formatting. 

. . . . . 

Add a type to auth_userokay() to allow for giving a specific
authentication method for doas in login.conf, e.g.

staff:\
        ...
        :auth-doas=yubikey:\
        :auth=passwd:\
        :tc=default:

OK?

/Alexander

Index: doas.c
===================================================================
RCS file: /cvs/src/usr.bin/doas/doas.c,v
retrieving revision 1.14
diff -u -p -r1.14 doas.c
--- doas.c      20 Jul 2015 01:04:37 -0000      1.14
+++ doas.c      21 Jul 2015 07:43:53 -0000
@@ -341,7 +341,7 @@ main(int argc, char **argv, char **envp)
        }
 
        if (!(rule->options & NOPASS)) {
-               if (!auth_userokay(myname, NULL, NULL, NULL)) {
+               if (!auth_userokay(myname, NULL, "auth-doas", NULL)) {
                        syslog(LOG_AUTHPRIV | LOG_NOTICE,
                            "failed password for %s", myname);
                        fail();