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acmed: handle international domain names

--- a/sys/src/cmd/auth/acmed.c

+++ b/sys/src/cmd/auth/acmed.c

@@ -741,9 +741,9 @@

 static void

 getcert(char *csrpath)

 {

-	char *csr, *dom[64], name[2048];

+	char *csr, *dom[64], subj[2048];

 	uchar *der;

-	int nder, ndom, fd;

+	int nder, i, ndom, fd;

 	RSApub *rsa;

 	Hdr loc = { "location" };

 	JSON *o;

@@ -752,24 +752,39 @@

 		sysfatal("open %s: %r", csrpath);

 	if((der = slurp(fd, &nder)) == nil)

 		sysfatal("read %s: %r", csrpath);

-	if((rsa = X509reqtoRSApub(der, nder, name, sizeof(name))) == nil)

+	close(fd);

+

+	if((rsa = X509reqtoRSApub(der, nder, subj, sizeof(subj))) == nil)

 		sysfatal("decode csr: %r");

+	rsapubfree(rsa);

 	if((csr = encurl64(der, nder)) == nil)

 		sysfatal("encode %s: %r", csrpath);

-	if((ndom = getfields(name, dom, nelem(dom), 1, ", ")) == nelem(dom))

-		sysfatal("too man domains");

-	rsapubfree(rsa);

-	close(fd);

 	free(der);

+	dprint("subject: %s\n", subj);

+	if((ndom = getfields(subj, dom, nelem(dom), 1, ", ")) == nelem(dom))

+		sysfatal("too man domains");

+

+	for(i = 0; i < ndom; i++){

+		char buf[256], *s = dom[i];

+		if(utf2idn(s, buf, sizeof(buf)) >= 0)

+			s = buf;

+		dprint("dom[%d]: %s\n", i, s);

+		dom[i] = strdup(s);

+	}

+

 	if((o = submitorder(dom, ndom, &loc)) == nil)

 		sysfatal("order: %r");

 	if(dochallenges(dom, ndom, o) == -1)

 		sysfatal("challenge: %r");

+

 	if(submitcsr(o, csr) == -1)

 		sysfatal("signing cert: %r");

 	if(fetchcert(loc.val) == -1)

 		sysfatal("saving cert: %r");

+

+	for(i = 0; i < ndom; i++)

+		free(dom[i]);

 	free(csr);

 }

-- 

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