}
+
+/*
+ * Callback function for perform_yadis_discovery()
+ * We're interested in HTTP headers returned from the server.
+ */
+size_t yadis_headerfunction(void *ptr, size_t size, size_t nmemb, void *userdata) {
+ char hdr[1024];
+
+ memcpy(hdr, ptr, (size*nmemb));
+ hdr[size*nmemb] = 0;
+
+ /* We are looking for a header like this:
+ * X-XRDS-Location: https://api.screenname.aol.com/auth/openid/xrds
+ */
+ if (!strncasecmp(hdr, "X-XRDS-Location:", 16)) {
+ safestrncpy(hdr, &hdr[16], sizeof(hdr));
+ striplt(hdr);
+ syslog(LOG_DEBUG, "\033[32m%s\033[0m", hdr);
+ /* FIXME now do something with it */
+ }
+
+ return(size * nmemb);
+}
+
+
+
/* Attempt to perform Yadis discovery as specified in Yadis 1.0 section 6.2.5.
* If successful, returns nonzero and calls parse_xrds_document() to act upon the received data.
* If Yadis fails, returns 0 and does nothing else.
my_headers = curl_slist_append(my_headers, "Accept: application/xrds+xml");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, my_headers);
+ curl_easy_setopt(curl, CURLOPT_WRITEHEADER, NULL);
+ curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, yadis_headerfunction);
+
result = curl_easy_perform(curl);
if (result) {
syslog(LOG_DEBUG, "libcurl error %d: %s", result, errmsg);