#include "ctdl_module.h"
+struct associate_handle {
+ char claimed_id[256];
+ char assoc_type[32];
+ time_t expiration_time;
+ char assoc_handle[128];
+ char mac_key[128];
+};
+
+HashList *HL = NULL; // hash table of assoc_handle
+
/*
* Locate a <link> tag and, given its 'rel=' parameter, return its 'href' parameter
*/
}
+#define ASSOCIATE_RESPONSE_SIZE 4096
+
+/*
+ * libcurl callback function for prepare_openid_associate_request()
+ */
+size_t associate_callback(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+ char *response = (char *) stream;
+ int got_bytes = (size * nmemb);
+ int len = strlen(response);
+
+ if ((len + got_bytes + 1) < ASSOCIATE_RESPONSE_SIZE) {
+ memcpy(&response[len], ptr, got_bytes);
+ response[len+got_bytes] = 0;
+ }
+
+ return got_bytes;
+}
+
+
+/*
+ * Process the response from an "associate" request
+ */
+struct associate_handle *process_associate_response(char *claimed_id, char *associate_response)
+{
+ struct associate_handle *h = NULL;
+ char *ptr = associate_response;
+ char thisline[256];
+ char thiskey[256];
+ char thisdata[256];
+
+ h = (struct associate_handle *) malloc(sizeof(struct associate_handle));
+ safestrncpy(h->claimed_id, claimed_id, sizeof h->claimed_id);
+
+ do {
+ ptr = memreadline(ptr, thisline, sizeof thisline);
+ extract_token(thiskey, thisline, 0, ':', sizeof thiskey);
+ extract_token(thisdata, thisline, 1, ':', sizeof thisdata);
+
+ if (!strcasecmp(thiskey, "assoc_type")) {
+ safestrncpy(h->assoc_type, thisdata, sizeof h->assoc_type);
+ }
+ else if (!strcasecmp(thiskey, "expires_in")) {
+ h->expiration_time = time(NULL) + atol(thisdata);
+ }
+ else if (!strcasecmp(thiskey, "assoc_handle")) {
+ safestrncpy(h->assoc_handle, thisdata, sizeof h->assoc_handle);
+ }
+ else if (!strcasecmp(thiskey, "mac_key")) {
+ safestrncpy(h->mac_key, thisdata, sizeof h->mac_key);
+ }
+
+ } while (*ptr);
+
+ // FIXME add this data structure into a hash table
+
+ // FIXME periodically purge the hash table of expired handles
+
+ return h;
+}
+
+
+
+/*
+ * Establish a shared secret with an OpenID Identity Provider by sending
+ * an "associate" request.
+ */
+struct associate_handle *prepare_openid_associate_request(
+ char *claimed_id, char *openid_server, char *openid_delegate)
+{
+ CURL *curl;
+ CURLcode res;
+ struct curl_httppost *formpost=NULL;
+ struct curl_httppost *lastptr=NULL;
+ char associate_response[ASSOCIATE_RESPONSE_SIZE];
+ struct associate_handle *h = NULL;
+
+ memset(associate_response, 0, ASSOCIATE_RESPONSE_SIZE);
+
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "openid.mode",
+ CURLFORM_COPYCONTENTS, "associate",
+ CURLFORM_END
+ );
+
+ curl_formadd(&formpost,
+ &lastptr,
+ CURLFORM_COPYNAME, "openid.session_type",
+ CURLFORM_COPYCONTENTS, "",
+ CURLFORM_END
+ );
+
+ curl = curl_easy_init();
+ if (curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, openid_server);
+ curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
+ curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, associate_response);
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, associate_callback);
+ curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+
+ curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
+ res = curl_easy_perform(curl);
+ h = process_associate_response(claimed_id, associate_response);
+ curl_easy_cleanup(curl);
+ }
+ curl_formfree(formpost);
+
+ return h;
+}
+
+
+
/*
char trust_root[1024];
int i;
char buf[SIZ];
+ struct associate_handle *h = NULL;
if (CC->logged_in) {
cprintf("%d Already logged in.\n", ERROR + ALREADY_LOGGED_IN);
i = fetch_http(openid_url, buf, sizeof buf - 1);
buf[sizeof buf - 1] = 0;
- CtdlLogPrintf(CTDL_DEBUG, "fetch got %d bytes:\n", i);
if (i > 0) {
char openid_server[1024];
char openid_delegate[1024];
safestrncpy(openid_delegate, openid_url, sizeof openid_delegate);
}
- /* Now we know where to redirect to. */
+ /*
+ * Prepare an "associate" request. This contacts the IdP and fetches
+ * a data structure containing an assoc_handle plus a shared secret.
+ */
+ h = prepare_openid_associate_request(openid_url, openid_server, openid_delegate);
+ /* Assemble a URL to which the user-agent will be redirected. */
char redirect_string[4096];
char escaped_identity[1024];
char escaped_return_to[1024];
char escaped_trust_root[1024];
+ char escaped_sreg_optional[256];
+ char escaped_assoc_handle[256];
urlesc(escaped_identity, sizeof escaped_identity, openid_delegate);
+ urlesc(escaped_assoc_handle, sizeof escaped_assoc_handle, h->assoc_handle);
urlesc(escaped_return_to, sizeof escaped_return_to, return_to);
urlesc(escaped_trust_root, sizeof escaped_trust_root, trust_root);
+ urlesc(escaped_sreg_optional, sizeof escaped_sreg_optional,
+ "nickname,email,fullname,postcode,country");
snprintf(redirect_string, sizeof redirect_string,
"%s"
"?openid.mode=checkid_setup"
- "&openid_identity=%s"
+ "&openid.identity=%s"
+ "&openid.assoc_handle=%s"
"&openid.return_to=%s"
"&openid.trust_root=%s"
+ "&openid.sreg.optional=%s"
,
- openid_server, escaped_identity, escaped_return_to, escaped_trust_root
+ openid_server,
+ escaped_identity,
+ escaped_assoc_handle,
+ escaped_return_to,
+ escaped_trust_root,
+ escaped_sreg_optional
);
cprintf("%d %s\n", CIT_OK, redirect_string);
return;
-
-
-/* To insert this module into the server activate the next block by changing the #if 0 to #if 1 */
CTDL_MODULE_INIT(openid_rp)
{
if (!threading)
{
+ curl_global_init(CURL_GLOBAL_ALL);
+ HL = NewHash(1, NULL);
CtdlRegisterProtoHook(cmd_oid1, "OID1", "Begin OpenID checkid_setup operation");
}
- /* return our Subversion id for the Log */
- return "$Id$";
+ /* return our Subversion id for the Log */
+ return "$Id$";
}
projects / citadel.git / blobdiff