/*
* This is an implementation of OpenID 2.0 RELYING PARTY SUPPORT CURRENTLY B0RKEN AND BEING DEVEL0PZ0RED
+
+
+ OPENID2 BRANCH -- NEEDS TO BE MERGEZ0RED !!!!!!111
+
*
* Copyright (c) 2007-2011 by the citadel.org team
*
#include "user_ops.h"
typedef struct _ctdl_openid {
- StrBuf *claimed_id;
- StrBuf *server;
+ StrBuf *op_url; /* OpenID Provider Endpoint URL */
+ StrBuf *claimed_id; /* Claimed Identifier */
int verified;
HashList *sreg_keys;
} ctdl_openid;
+enum {
+ openid_disco_none,
+ openid_disco_xrds,
+ openid_disco_html
+};
+
+
+
void Free_ctdl_openid(ctdl_openid **FreeMe)
{
- if (*FreeMe == NULL)
+ if (*FreeMe == NULL) {
return;
+ }
+ FreeStrBuf(&(*FreeMe)->op_url);
FreeStrBuf(&(*FreeMe)->claimed_id);
- FreeStrBuf(&(*FreeMe)->server);
DeleteHash(&(*FreeMe)->sreg_keys);
free(*FreeMe);
*FreeMe = NULL;
}
-/*
- * Begin an HTTP fetch (returns number of bytes actually fetched, or -1 for error) using libcurl.
- */
-int fetch_http(StrBuf *url, StrBuf **target_buf)
-{
- StrBuf *ReplyBuf;
- CURL *curl;
- CURLcode result;
- char *effective_url = NULL;
- char errmsg[1024] = "";
-
- if (StrLength(url) <=0 ) return(-1);
- ReplyBuf = *target_buf = NewStrBuf ();
- if (ReplyBuf == 0) return(-1);
-
- curl = ctdl_openid_curl_easy_init(errmsg);
- if (!curl) return(-1);
-
- curl_easy_setopt(curl, CURLOPT_URL, ChrPtr(url));
- curl_easy_setopt(curl, CURLOPT_WRITEDATA, ReplyBuf);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, CurlFillStrBuf_callback);
-
- 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(url, effective_url, -1);
-
- curl_easy_cleanup(curl);
- return StrLength(ReplyBuf);
-}
-
-
-
struct xrds {
+ StrBuf *CharData;
int nesting_level;
int in_xrd;
int current_service_priority;
- int selected_service_priority; /* more here later */
+ int selected_service_priority;
+ StrBuf *current_service_uri;
+ StrBuf *selected_service_uri;
+ int current_service_is_oid2auth;
};
if (!strcasecmp(supplied_el, "XRD")) {
++xrds->in_xrd;
- syslog(LOG_DEBUG, "*** XRD CONTAINER BEGIN ***");
}
else if (!strcasecmp(supplied_el, "service")) {
xrds->current_service_priority = 0;
+ xrds->current_service_is_oid2auth = 0;
for (i=0; attr[i] != NULL; i+=2) {
if (!strcasecmp(attr[i], "priority")) {
xrds->current_service_priority = atoi(attr[i+1]);
}
}
}
+
+ FlushStrBuf(xrds->CharData);
}
if (!strcasecmp(supplied_el, "XRD")) {
--xrds->in_xrd;
- syslog(LOG_DEBUG, "*** XRD CONTAINER END ***");
+ }
+
+ else if (!strcasecmp(supplied_el, "type")) {
+ if ( (xrds->in_xrd)
+ && (!strcasecmp(ChrPtr(xrds->CharData), "http://specs.openid.net/auth/2.0/server"))
+ ) {
+ xrds->current_service_is_oid2auth = 1;
+ }
+ }
+
+ else if (!strcasecmp(supplied_el, "uri")) {
+ if (xrds->in_xrd) {
+ FlushStrBuf(xrds->current_service_uri);
+ StrBufAppendBuf(xrds->current_service_uri, xrds->CharData, 0);
+ }
}
else if (!strcasecmp(supplied_el, "service")) {
- /* this is where we should evaluate the service and do stuff */
- xrds->current_service_priority = 0;
+ if ( (xrds->in_xrd)
+ && (xrds->current_service_priority < xrds->selected_service_priority)
+ && (xrds->current_service_is_oid2auth)
+ ) {
+ xrds->selected_service_priority = xrds->current_service_priority;
+ FlushStrBuf(xrds->selected_service_uri);
+ StrBufAppendBuf(xrds->selected_service_uri, xrds->current_service_uri, 0);
+ }
+
}
+
+ FlushStrBuf(xrds->CharData);
}
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); */
+ StrBufAppendBufPlain (xrds->CharData, s, len, 0);
}
/*
* Parse an XRDS document.
- * If OpenID stuff is discovered, populate FIXME something and return nonzero
+ * If an OpenID Provider URL is discovered, op_url to that value and return nonzero.
* If nothing useful happened, return 0.
*/
int parse_xrds_document(StrBuf *ReplyBuf) {
+ ctdl_openid *oiddata = (ctdl_openid *) CC->openid_data;
struct xrds xrds;
+ int return_value = 0;
- syslog(LOG_DEBUG, "\033[32m --- XRDS DOCUMENT --- \n%s\033[0m", ChrPtr(ReplyBuf));
+ // syslog(LOG_DEBUG, "\033[32m --- XRDS DOCUMENT --- \n%s\033[0m", ChrPtr(ReplyBuf));
memset(&xrds, 0, sizeof (struct xrds));
+ xrds.selected_service_priority = INT_MAX;
+ xrds.CharData = NewStrBuf();
+ xrds.current_service_uri = NewStrBuf();
+ xrds.selected_service_uri = NewStrBuf();
XML_Parser xp = XML_ParserCreate(NULL);
if (xp) {
XML_SetUserData(xp, &xrds);
syslog(LOG_ALERT, "Cannot create XML parser");
}
- return(0); /* FIXME return nonzero if something wonderful happened */
+ if (xrds.selected_service_priority < INT_MAX) {
+ if (oiddata->op_url == NULL) {
+ oiddata->op_url = NewStrBuf();
+ }
+ FlushStrBuf(oiddata->op_url);
+ StrBufAppendBuf(oiddata->op_url, xrds.selected_service_uri, 0);
+ return_value = openid_disco_xrds;
+ }
+
+ FreeStrBuf(&xrds.CharData);
+ FreeStrBuf(&xrds.current_service_uri);
+ FreeStrBuf(&xrds.selected_service_uri);
+
+ return(return_value);
}
}
-
/* Attempt to perform Yadis discovery as specified in Yadis 1.0 section 6.2.5.
*
* If Yadis fails, we then attempt HTML discovery using the same document.
* If fails, returns 0 and does nothing else.
*/
int perform_openid2_discovery(StrBuf *YadisURL) {
+ ctdl_openid *oiddata = (ctdl_openid *) CC->openid_data;
int docbytes = (-1);
StrBuf *ReplyBuf = NULL;
int return_value = 0;
struct curl_slist *my_headers = NULL;
StrBuf *x_xrds_location = NULL;
- if (YadisURL == NULL) return(0);
+ if (!YadisURL) return(0);
syslog(LOG_DEBUG, "perform_openid2_discovery(%s)", ChrPtr(YadisURL));
if (StrLength(YadisURL) == 0) return(0);
- ReplyBuf = NewStrBuf ();
- if (ReplyBuf == 0) return(0);
+ ReplyBuf = NewStrBuf();
+ if (!ReplyBuf) return(0);
curl = ctdl_openid_curl_easy_init(errmsg);
if (!curl) return(0);
*/
if (return_value == 0) {
syslog(LOG_DEBUG, "Attempting HTML discovery");
- StrBuf *foo = NewStrBuf();
- extract_link(foo, HKEY("openid2.provider"), ReplyBuf);
- if (StrLength(foo) > 0) {
- syslog(LOG_DEBUG, "\033[31mHTML DISCO PROVIDER: %s\033[0m", ChrPtr(foo));
+ if (oiddata->op_url == NULL) {
+ oiddata->op_url = NewStrBuf();
+ }
+ extract_link(oiddata->op_url, HKEY("openid2.provider"), ReplyBuf);
+ if (StrLength(oiddata->op_url) > 0) {
+ return_value = openid_disco_html;
}
- FreeStrBuf(&foo);
}
if (ReplyBuf != NULL) {
CCC->openid_data = oiddata = malloc(sizeof(ctdl_openid));
if (oiddata == NULL) {
+ syslog(LOG_ALERT, "malloc() failed: %s", strerror(errno));
cprintf("%d malloc failed\n", ERROR + INTERNAL_ERROR);
return;
}
*/
discovery_succeeded = perform_openid2_discovery(oiddata->claimed_id);
+ if (discovery_succeeded == 0) {
+ cprintf("%d There is no OpenID identity provider at this location.\n", ERROR);
+ }
-
- /************ OPENID 1.1 **********/
-
- if ( (fetch_http(oiddata->claimed_id, &ReplyBuf) > 0)
- && (StrLength(ReplyBuf) > 0)
- ) {
- openid_delegate = NewStrBuf();
- oiddata->server = NewStrBuf();
- extract_link(oiddata->server, HKEY("openid.server"), ReplyBuf);
- extract_link(openid_delegate, HKEY("openid.delegate"), ReplyBuf);
-
- if (StrLength(oiddata->server) == 0) {
- cprintf("%d There is no OpenID identity provider at this URL.\n", ERROR);
- FreeStrBuf(&ArgBuf);
- FreeStrBuf(&ReplyBuf);
- FreeStrBuf(&return_to);
- FreeStrBuf(&trust_root);
- FreeStrBuf(&openid_delegate);
- FreeStrBuf(&RedirectUrl);
- return;
- }
+ else {
+ /*
+ * If we get to this point we are in possession of a valid OpenID Provider URL.
+ */
+ syslog(LOG_DEBUG, "OP URI '%s' discovered using method %d",
+ ChrPtr(oiddata->claimed_id),
+ discovery_succeeded
+ );
/* Empty delegate is legal; we just use the openid_url instead */
if (StrLength(openid_delegate) == 0) {
}
/* Assemble a URL to which the user-agent will be redirected. */
-
- RedirectUrl = NewStrBufDup(oiddata->server);
-
- StrBufAppendBufPlain(RedirectUrl, HKEY("?openid.mode=checkid_setup"
- "&openid.identity="), 0);
+
+ RedirectUrl = NewStrBufDup(oiddata->op_url);
+
+ StrBufAppendBufPlain(RedirectUrl, HKEY("?openid.mode=checkid_setup&openid.identity="), 0);
StrBufUrlescAppend(RedirectUrl, openid_delegate, NULL);
-
+
StrBufAppendBufPlain(RedirectUrl, HKEY("&openid.return_to="), 0);
StrBufUrlescAppend(RedirectUrl, return_to, NULL);
-
+
StrBufAppendBufPlain(RedirectUrl, HKEY("&openid.trust_root="), 0);
StrBufUrlescAppend(RedirectUrl, trust_root, NULL);
-
+
StrBufAppendBufPlain(RedirectUrl, HKEY("&openid.sreg.optional="), 0);
StrBufUrlescAppend(RedirectUrl, NULL, "nickname,email,fullname,postcode,country,dob,gender");
-
+
cprintf("%d %s\n", CIT_OK, ChrPtr(RedirectUrl));
-
- FreeStrBuf(&ArgBuf);
- FreeStrBuf(&ReplyBuf);
- FreeStrBuf(&return_to);
- FreeStrBuf(&trust_root);
- FreeStrBuf(&openid_delegate);
- FreeStrBuf(&RedirectUrl);
-
- return;
}
-
+
FreeStrBuf(&ArgBuf);
FreeStrBuf(&ReplyBuf);
FreeStrBuf(&return_to);
FreeStrBuf(&trust_root);
FreeStrBuf(&openid_delegate);
FreeStrBuf(&RedirectUrl);
-
- cprintf("%d Unable to fetch OpenID URL\n", ERROR);
}
cprintf("%d run OIDS first.\n", ERROR + INTERNAL_ERROR);
return;
}
- if (StrLength(oiddata->server) == 0){
+ if (StrLength(oiddata->op_url) == 0){
cprintf("%d need a remote server to authenticate against\n", ERROR + ILLEGAL_VALUE);
return;
}
ReplyBuf = NewStrBuf();
curl = ctdl_openid_curl_easy_init(errmsg);
- curl_easy_setopt(curl, CURLOPT_URL, ChrPtr(oiddata->server));
+ curl_easy_setopt(curl, CURLOPT_URL, ChrPtr(oiddata->op_url));
curl_easy_setopt(curl, CURLOPT_WRITEDATA, ReplyBuf);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, CurlFillStrBuf_callback);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
projects / citadel.git / blobdiff