security/duo_openvpn: Add OPTION for overriding USERNAME

security/duo_openvpn/Makefile

@@ -18,13 +18,14 @@ GH_ACCOUNT=	duosecurity
 
 SUB_FILES=	pkg-message
 
-OPTIONS_DEFINE=	METHOD
+OPTIONS_DEFINE=	METHOD USERNAME
 OPTIONS_SINGLE=	HELPER
 OPTIONS_SINGLE_HELPER=	PERL PYTHON
 OPTIONS_DEFAULT=PERL
 OPTIONS_SUB=	yes
 
 METHOD_DESC=		Force an authentication method (defaults to push, via METHOD)
+USERNAME_DESC=		Force duo to use username variable, instead of common_name
 METHOD?=		push
 PERL_USES=		perl5
 PERL_VARS=		USE_PERL5=run CFLAGS+=-DUSE_PERL
@@ -39,6 +40,9 @@ PYTHON_USES=		python:3.7+,run
 post-patch:
 	${REINPLACE_CMD} 's|%%SHEBANG%%|${PYTHON_CMD}|' ${WRKSRC}/duo_openvpn.py
 	${REINPLACE_CMD} 's|PREFIX "|"${DATADIR}|' ${WRKSRC}/duo_openvpn.c
+.if ${PORT_OPTIONS:MUSERNAME}
+	${REINPLACE_CMD} 's|common_name|username|' ${WRKSRC}/duo_openvpn.c
+.endif
 .if ${PORT_OPTIONS:MMETHOD}
 	${REINPLACE_CMD} 's|get_env("password", envp);|"${METHOD}";|' ${WRKSRC}/duo_openvpn.c
 .endif