void write_auth(struct request *req, struct mbuf *mb)
{
int err;
struct realm *realm;
uint8_t digest[MD5_SIZE];
uint64_t cnonce;
if(!req->auth)
return;
realm = req->auth;
cnonce = rand_u64();
err = mkdigest(digest, realm, req->meth, req->path, cnonce);
err |= mbuf_write_str(mb, "Authorization: ");
err |= mbuf_printf(mb, "Digest username=\"%s\"", realm->user);
err |= mbuf_printf(mb, ", realm=\"%s\"", realm->realm);
err |= mbuf_printf(mb, ", nonce=\"%s\"", realm->nonce);
err |= mbuf_printf(mb, ", uri=\"%s\"", req->path);
err |= mbuf_printf(mb, ", response=\"%w\"",
digest, sizeof(digest));
if (realm->opaque)
err |= mbuf_printf(mb, ", opaque=\"%s\"", realm->opaque);
if (realm->qop) {
err |= mbuf_printf(mb, ", cnonce=\"%016llx\"", cnonce);
err |= mbuf_write_str(mb, ", qop=auth");
err |= mbuf_printf(mb, ", nc=%08x", realm->nc);
}
++realm->nc;
err |= mbuf_write_str(mb, "\r\n");
}
int sip_auth_encode(struct mbuf *mb, struct sip_auth *auth, const char *met,
const char *uri)
{
struct le *le;
int err = 0;
if (!mb || !auth || !met || !uri)
return EINVAL;
for (le = auth->realml.head; le; le = le->next) {
const uint64_t cnonce = rand_u64();
struct realm *realm = le->data;
uint8_t digest[MD5_SIZE];
err = mkdigest(digest, realm, met, uri, cnonce);
if (err)
break;
switch (realm->hdr) {
case SIP_HDR_WWW_AUTHENTICATE:
err = mbuf_write_str(mb, "Authorization: ");
break;
case SIP_HDR_PROXY_AUTHENTICATE:
err = mbuf_write_str(mb, "Proxy-Authorization: ");
break;
default:
continue;
}
err |= mbuf_printf(mb, "Digest username=\"%s\"", realm->user);
err |= mbuf_printf(mb, ", realm=\"%s\"", realm->realm);
err |= mbuf_printf(mb, ", nonce=\"%s\"", realm->nonce);
err |= mbuf_printf(mb, ", uri=\"%s\"", uri);
err |= mbuf_printf(mb, ", response=\"%w\"",
digest, sizeof(digest));
if (realm->opaque)
err |= mbuf_printf(mb, ", opaque=\"%s\"",
realm->opaque);
if (realm->qop) {
err |= mbuf_printf(mb, ", cnonce=\"%016llx\"", cnonce);
err |= mbuf_write_str(mb, ", qop=auth");
err |= mbuf_printf(mb, ", nc=%08x", realm->nc);
}
++realm->nc;
err |= mbuf_write_str(mb, "\r\n");
if (err)
break;
}
return err;
}
