void xrds_xml_chardata(void *data, const XML_Char *s, int len) {
struct xrds *xrds = (struct xrds *) data;
+
+ if (xrds) ; /* this is only here to silence the warning for now */
/* StrBufAppendBufPlain (xrds->CData, s, len, 0); */
}
syslog(LOG_ALERT, "Cannot create XML parser");
}
- return(0);
+ return(0); /* FIXME return nonzero if something wonderful happened */
}
-/*
- * Attempt to perform YADIS discovery.
- * If successful, returns nonzero and fills the session's claimed ID blah FIXME this comment
- * If YADIS fails, returns 0 and does nothing else.
+/* 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.
*/
int perform_yadis_discovery(StrBuf *YadisURL) {
int docbytes = (-1);
int r;
CURL *curl;
CURLcode result;
- /*char *effective_url = NULL;*/
char errmsg[1024] = "";
+ struct curl_slist *my_headers = NULL;
if (YadisURL == NULL) return(0);
if (StrLength(YadisURL) == 0) return(0);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, ReplyBuf);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, CurlFillStrBuf_callback);
+ my_headers = curl_slist_append(my_headers, "Accept:"); /* disable the default Accept: header */
+ my_headers = curl_slist_append(my_headers, "Accept: application/xrds+xml");
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, my_headers);
+
result = curl_easy_perform(curl);
if (result) {
syslog(LOG_DEBUG, "libcurl error %d: %s", result, errmsg);
}
- /*curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &effective_url);
- StrBufPlain(YadisURL, effective_url, -1);*/
+ curl_slist_free_all(my_headers);
curl_easy_cleanup(curl);
docbytes = StrLength(ReplyBuf);
- if (docbytes < 0) {
- return(0);
- }
- if (docbytes == 0) {
- FreeStrBuf(&ReplyBuf);
- return(0);
- }
/* FIXME here we need to handle Yadis 1.0 section 6.2.5.
*
* The response from the server will be one of:
*
- * 1. An HTML document with a <head> element that includes a <meta> element with http-equiv
+ * Option 1: An HTML document with a <head> element that includes a <meta> element with http-equiv
* attribute, X-XRDS-Location,
*
- * 2. HTTP response-headers that include an X-XRDS-Location response-header, together with a
- * document
+ * Option 2: HTTP response-headers that include an X-XRDS-Location response-header, together with a
+ * document (NOTE: we can probably recurse for this)
*
- * 3. HTTP response-headers only, which MAY include an X-XRDS-Location response-header,
+ * Option 3:. HTTP response-headers only, which MAY include an X-XRDS-Location response-header,
* a contenttype response-header specifying MIME media type, application/xrds+xml, or both.
*
- * 4. A document of MIME media type, application/xrds+xml
- *
- * We are only handling case #4 here and assuming that the server returned an XRDS document.
*/
- /* Parse the XRDS document. */
- r = parse_xrds_document(ReplyBuf);
- FreeStrBuf(&ReplyBuf);
+ /*
+ * Option 4: the returned web page may *be* an XRDS document. Try to parse it.
+ */
+ r = 0;
+ if (docbytes >= 0) {
+ r = parse_xrds_document(ReplyBuf);
+ FreeStrBuf(&ReplyBuf);
+ }
+
return(r);
}
* So we're not even going to bother attempting this mode.
*/
- /* Second we attempt YADIS.
+ /* Second we attempt Yadis.
* Google uses this so we'd better do our best to implement it.
*/
int yadis_succeeded = perform_yadis_discovery(oiddata->claimed_id);
projects / citadel.git / blobdiff