/*
- * This is an implementation of OpenID 1.1 Relying Party support, in stateless mode.
+ * This is an implementation of OpenID 2.0 RELYING PARTY SUPPORT CURRENTLY B0RKEN AND BEING DEVEL0PZ0RED
*
- * Copyright (c) 2007-2010 by the citadel.org team
+ * Copyright (c) 2007-2011 by the citadel.org team
*
- * This program is free software; you can redistribute it and/or modify
+ * This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "sysdep.h"
#include <string.h>
#include <limits.h>
#include <curl/curl.h>
+#include <expat.h>
#include "ctdl_module.h"
#include "config.h"
#include "citserver.h"
struct CitContext *CCC = CC; /* CachedCitContext - performance boost */
if (CCC->openid_data != NULL) {
- syslog(LOG_DEBUG, "Clearing OpenID session state\n");
+ syslog(LOG_DEBUG, "Clearing OpenID session state");
Free_ctdl_openid((ctdl_openid **) &CCC->openid_data);
}
}
cdb_free(cdboi);
if (fetched_usernum == who->usernum) {
- syslog(LOG_INFO, "%s already associated; no action is taken\n", ChrPtr(claimed_id));
+ syslog(LOG_INFO, "%s already associated; no action is taken", ChrPtr(claimed_id));
return(0);
}
else {
- syslog(LOG_INFO, "%s already belongs to another user\n", ChrPtr(claimed_id));
+ syslog(LOG_INFO, "%s already belongs to another user", ChrPtr(claimed_id));
return(3);
}
}
keys = NewHash(1, NULL);
if (!keys) return;
-
cdb_rewind(CDB_OPENID);
while (cdboi = cdb_next_item(CDB_OPENID), cdboi != NULL) {
if (cdboi->len > sizeof(long)) {
HashPos = GetNewHashPos(keys, 0);
while (GetNextHashPos(keys, HashPos, &len, &Key, &Value)!=0)
{
- syslog(LOG_DEBUG, "Deleting associated OpenID <%s>\n", (char*)Value);
+ syslog(LOG_DEBUG, "Deleting associated OpenID <%s>", (char*)Value);
cdb_delete(CDB_OPENID, Value, strlen(Value));
/* note: don't free(Value) -- deleting the hash list will handle this for us */
}
}
-
/*
* List the OpenIDs associated with the currently logged in account
*/
}
-
-
/*
* Detach an OpenID from the currently logged in account
*/
if (CC->logged_in) return(3);
if (!GetHash(sreg_keys, "sreg.nickname", 13, (void *) &desired_name)) return(4);
- syslog(LOG_DEBUG, "The desired account name is <%s>\n", desired_name);
+ syslog(LOG_DEBUG, "The desired account name is <%s>", desired_name);
len = cutuserkey(desired_name);
if (!CtdlGetUser(&CC->user, desired_name)) {
- syslog(LOG_DEBUG, "<%s> is already taken by another user.\n", desired_name);
+ syslog(LOG_DEBUG, "<%s> is already taken by another user.", desired_name);
memset(&CC->user, 0, sizeof(struct ctdluser));
return(5);
}
*/
void extract_link(StrBuf *target_buf, const char *rel, long repllen, StrBuf *source_buf)
{
- int len, i;
+ int i;
const char *ptr;
const char *href_start = NULL;
const char *href_end = NULL;
if (link_tag_end == NULL)
break;
for (i=0; i < 1; i++ ){
- len = link_tag_end - link_tag_start;
-
rel_start = cbmstrcasestr(link_tag_start, "rel=");
if ((rel_start == NULL) ||
(rel_start > link_tag_end))
/*
* Begin an HTTP fetch (returns number of bytes actually fetched, or -1 for error) using libcurl.
- *
- * If 'normalize_len' is nonzero, the caller is specifying the buffer size of 'url', and is
- * requesting that the effective (normalized) URL be copied back to it.
*/
int fetch_http(StrBuf *url, StrBuf **target_buf)
{
curl = curl_easy_init();
if (!curl) {
- syslog(LOG_ALERT, "Unable to initialize libcurl.\n");
+ syslog(LOG_ALERT, "Unable to initialize libcurl.");
return(-1);
}
}
res = curl_easy_perform(curl);
if (res) {
- syslog(LOG_DEBUG, "fetch_http() libcurl error %d: %s\n", res, errmsg);
+ syslog(LOG_DEBUG, "libcurl error %d: %s", res, errmsg);
}
curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &effective_url);
StrBufPlain(url, effective_url, -1);
}
+
+struct xrds {
+ int nesting_level;
+ int in_xrd;
+};
+
+
+void xrds_xml_start(void *data, const char *supplied_el, const char **attr) {
+ struct xrds *xrds = (struct xrds *) data;
+
+ ++xrds->nesting_level;
+
+ if (!strcasecmp(supplied_el, "XRD")) {
+ ++xrds->in_xrd;
+ syslog(LOG_DEBUG, "*** XRD DOCUMENT BEGIN ***");
+ }
+}
+
+
+void xrds_xml_end(void *data, const char *supplied_el) {
+ struct xrds *xrds = (struct xrds *) data;
+
+ --xrds->nesting_level;
+
+ if (!strcasecmp(supplied_el, "XRD")) {
+ --xrds->in_xrd;
+ syslog(LOG_DEBUG, "*** XRD DOCUMENT END ***");
+ }
+}
+
+
+void xrds_xml_chardata(void *data, const XML_Char *s, int len) {
+ struct xrds *xrds = (struct xrds *) data;
+
+ syslog(LOG_DEBUG, "%2d xrds_xml_chardata()", xrds->nesting_level);
+ /* StrBufAppendBufPlain (xrds->CData, s, len, 0); */
+}
+
+
+/*
+ * Parse an XRDS document.
+ * If OpenID stuff is discovered, populate FIXME something and return nonzero
+ * If nothing useful happened, return 0.
+ */
+int parse_xrds_document(StrBuf *ReplyBuf) {
+ struct xrds xrds;
+
+ memset(&xrds, 0, sizeof (struct xrds));
+ XML_Parser xp = XML_ParserCreate(NULL);
+ if (xp) {
+ XML_SetUserData(xp, &xrds);
+ XML_SetElementHandler(xp, xrds_xml_start, xrds_xml_end);
+ XML_SetCharacterDataHandler(xp, xrds_xml_chardata);
+ XML_Parse(xp, ChrPtr(ReplyBuf), StrLength(ReplyBuf), 0);
+ XML_Parse(xp, "", 0, 1);
+ XML_ParserFree(xp);
+ }
+ else {
+ syslog(LOG_ALERT, "Cannot create XML parser");
+ }
+
+ return(0);
+}
+
+
+/*
+ * 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.
+ */
+int perform_yadis_discovery(StrBuf *YadisURL) {
+ int docbytes = (-1);
+ StrBuf *ReplyBuf = NULL;
+ int r;
+
+
+ docbytes = fetch_http(YadisURL, &ReplyBuf);
+ if (docbytes < 0) {
+ return(0);
+ }
+ if (docbytes == 0) {
+ FreeStrBuf(&ReplyBuf);
+ return(0);
+ }
+
+ r = parse_xrds_document(ReplyBuf);
+ FreeStrBuf(&ReplyBuf);
+ return(r);
+}
+
+
/*
* Setup an OpenID authentication
*/
StrBuf *trust_root = NULL;
StrBuf *openid_delegate = NULL;
StrBuf *RedirectUrl = NULL;
- int i;
struct CitContext *CCC = CC; /* CachedCitContext - performance boost */
ctdl_openid *oiddata;
ArgBuf = NewStrBufPlain(argbuf, -1);
+ oiddata->verified = 0;
oiddata->claimed_id = NewStrBufPlain(NULL, StrLength(ArgBuf));
trust_root = NewStrBufPlain(NULL, StrLength(ArgBuf));
return_to = NewStrBufPlain(NULL, StrLength(ArgBuf));
StrBufExtract_NextToken(oiddata->claimed_id, ArgBuf, &Pos, '|');
StrBufExtract_NextToken(return_to, ArgBuf, &Pos, '|');
StrBufExtract_NextToken(trust_root, ArgBuf, &Pos, '|');
-
- oiddata->verified = 0;
- i = fetch_http(oiddata->claimed_id, &ReplyBuf);
- syslog(LOG_DEBUG, "Normalized URL and Claimed ID is: %s\n",
- ChrPtr(oiddata->claimed_id));
- if ((StrLength(ReplyBuf) > 0) && (i > 0)) {
+ syslog(LOG_DEBUG, "User-Supplied Identifier is: %s", ChrPtr(oiddata->claimed_id));
+
+ /********** OpenID 2.0 section 7.3 - Discovery **********/
+
+ /* First we're supposed to attempt XRI based resolution.
+ * No one is using this, no one is asking for it, no one wants it.
+ * So we're not even going to bother attempting this mode.
+ */
+
+ /* 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);
+
+ /* Third we attempt HTML-based discovery. Here we go! */
+ if ( (yadis_succeeded == 0)
+ && (fetch_http(oiddata->claimed_id, &ReplyBuf) > 0)
+ && (StrLength(ReplyBuf) > 0)
+ ) {
openid_delegate = NewStrBuf();
oiddata->server = NewStrBuf();
extract_link(oiddata->server, HKEY("openid.server"), ReplyBuf);
return;
}
+
FreeStrBuf(&ArgBuf);
FreeStrBuf(&ReplyBuf);
FreeStrBuf(&return_to);
if (len < 0)
len = sizeof(thiskey) - 1;
extract_token(thisdata, buf, 1, '|', sizeof thisdata);
- syslog(LOG_DEBUG, "%s: [%d] %s\n", thiskey, strlen(thisdata), thisdata);
+ syslog(LOG_DEBUG, "%s: ["SIZE_T_FMT"] %s", thiskey, strlen(thisdata), thisdata);
Put(keys, thiskey, len, strdup(thisdata), NULL);
}
/* Now that we have all of the parameters, we have to validate the signature against the server */
- syslog(LOG_DEBUG, "About to validate the signature...\n");
+ syslog(LOG_DEBUG, "About to validate the signature...");
CURL *curl;
CURLcode res;
CURLFORM_COPYNAME, "openid.mode",
CURLFORM_COPYCONTENTS, "check_authentication",
CURLFORM_END);
- syslog(LOG_DEBUG, "%25s : %s\n", "openid.mode", "check_authentication");
+ syslog(LOG_DEBUG, "%25s : %s", "openid.mode", "check_authentication");
if (GetHash(keys, "assoc_handle", 12, (void *) &o_assoc_handle)) {
curl_formadd(&formpost, &lastptr,
CURLFORM_COPYNAME, "openid.assoc_handle",
CURLFORM_COPYCONTENTS, o_assoc_handle,
CURLFORM_END);
- syslog(LOG_DEBUG, "%25s : %s\n", "openid.assoc_handle", o_assoc_handle);
+ syslog(LOG_DEBUG, "%25s : %s", "openid.assoc_handle", o_assoc_handle);
}
if (GetHash(keys, "sig", 3, (void *) &o_sig)) {
CURLFORM_COPYNAME, "openid.sig",
CURLFORM_COPYCONTENTS, o_sig,
CURLFORM_END);
- syslog(LOG_DEBUG, "%25s : %s\n", "openid.sig", o_sig);
+ syslog(LOG_DEBUG, "%25s : %s", "openid.sig", o_sig);
}
if (GetHash(keys, "signed", 6, (void *) &o_signed)) {
CURLFORM_COPYNAME, "openid.signed",
CURLFORM_COPYCONTENTS, o_signed,
CURLFORM_END);
- syslog(LOG_DEBUG, "%25s : %s\n", "openid.signed", o_signed);
+ syslog(LOG_DEBUG, "%25s : %s", "openid.signed", o_signed);
num_signed_values = num_tokens(o_signed, ',');
for (i=0; i<num_signed_values; ++i) {
CURLFORM_COPYNAME, k_o_keyname,
CURLFORM_COPYCONTENTS, k_value,
CURLFORM_END);
- syslog(LOG_DEBUG, "%25s : %s\n", k_o_keyname, k_value);
+ syslog(LOG_DEBUG, "%25s : %s", k_o_keyname, k_value);
}
else {
- syslog(LOG_INFO, "OpenID: signed field '%s' is missing\n",
+ syslog(LOG_INFO, "OpenID: signed field '%s' is missing",
k_keyname);
}
}
res = curl_easy_perform(curl);
if (res) {
- syslog(LOG_DEBUG, "cmd_oidf() libcurl error %d: %s\n", res, errmsg);
+ syslog(LOG_DEBUG, "cmd_oidf() libcurl error %d: %s", res, errmsg);
}
curl_easy_cleanup(curl);
curl_formfree(formpost);
}
FreeStrBuf(&ReplyBuf);
- syslog(LOG_DEBUG, "Authentication %s.\n", (oiddata->verified ? "succeeded" : "failed") );
+ syslog(LOG_DEBUG, "Authentication %s.", (oiddata->verified ? "succeeded" : "failed") );
/* Respond to the client */
if (CC->logged_in) {
if (attach_openid(&CC->user, oiddata->claimed_id) == 0) {
cprintf("attach\n");
- syslog(LOG_DEBUG, "OpenID attach succeeded\n");
+ syslog(LOG_DEBUG, "OpenID attach succeeded");
}
else {
cprintf("fail\n");
- syslog(LOG_DEBUG, "OpenID attach failed\n");
+ syslog(LOG_DEBUG, "OpenID attach failed");
}
}
if (login_via_openid(oiddata->claimed_id) == 0) {
cprintf("authenticate\n%s\n%s\n", CC->user.fullname, CC->user.password);
logged_in_response();
- syslog(LOG_DEBUG, "Logged in using previously claimed OpenID\n");
+ syslog(LOG_DEBUG, "Logged in using previously claimed OpenID");
}
/*
*/
else if (config.c_disable_newu) {
cprintf("fail\n");
- syslog(LOG_DEBUG, "Creating user failed due to local policy\n");
+ syslog(LOG_DEBUG, "Creating user failed due to local policy");
}
/*
else if (openid_create_user_via_sreg(oiddata->claimed_id, keys) == 0) {
cprintf("authenticate\n%s\n%s\n", CC->user.fullname, CC->user.password);
logged_in_response();
- syslog(LOG_DEBUG, "Successfully auto-created new user\n");
+ syslog(LOG_DEBUG, "Successfully auto-created new user");
}
/*
else {
cprintf("\n");
}
- syslog(LOG_DEBUG, "The desired Simple Registration name is already taken.\n");
+ syslog(LOG_DEBUG, "The desired Simple Registration name is already taken.");
}
}
}
openid_level_supported = 1; /* This module supports OpenID 1.0 only */
}
- /* return our Subversion id for the Log */
+ /* return our module name for the log */
return "openid_rp";
}
projects / citadel.git / blobdiff