/*
- * $Id$
+ * This is an implementation of OpenID 2.0 RELYING PARTY SUPPORT CURRENTLY B0RKEN AND BEING DEVEL0PZ0RED
+
+
+ OPENID2 BRANCH -- NEEDS TO BE MERGEZ0RED !!!!!!111
+
*
- * This is an implementation of OpenID 1.1 Relying Party support, in stateless mode.
+ * Copyright (c) 2007-2011 by the citadel.org team
*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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, 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"
#include "user_ops.h"
-struct ctdl_openid {
- char claimed_id[1024];
- char server[1024];
+typedef struct _ctdl_openid {
+ 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) {
+ return;
+ }
+ FreeStrBuf(&(*FreeMe)->op_url);
+ FreeStrBuf(&(*FreeMe)->claimed_id);
+ DeleteHash(&(*FreeMe)->sreg_keys);
+ free(*FreeMe);
+ *FreeMe = NULL;
+}
+
+
+/*
+ * This cleanup function blows away the temporary memory used by this module.
+ */
+void openid_cleanup_function(void) {
+ struct CitContext *CCC = CC; /* CachedCitContext - performance boost */
+
+ if (CCC->openid_data != NULL) {
+ syslog(LOG_DEBUG, "Clearing OpenID session state");
+ Free_ctdl_openid((ctdl_openid **) &CCC->openid_data);
+ }
+}
/**************************************************************************/
/*
* Attach an OpenID to a Citadel account
*/
-int attach_openid(struct ctdluser *who, char *claimed_id)
+int attach_openid(struct ctdluser *who, StrBuf *claimed_id)
{
struct cdbdata *cdboi;
long fetched_usernum;
char buf[2048];
if (!who) return(1);
- if (!claimed_id) return(1);
- if (IsEmptyStr(claimed_id)) return(1);
+ if (StrLength(claimed_id)==0) return(1);
/* Check to see if this OpenID is already in the database */
- cdboi = cdb_fetch(CDB_OPENID, claimed_id, strlen(claimed_id));
+ cdboi = cdb_fetch(CDB_OPENID, ChrPtr(claimed_id), StrLength(claimed_id));
if (cdboi != NULL) {
memcpy(&fetched_usernum, cdboi->ptr, sizeof(long));
cdb_free(cdboi);
if (fetched_usernum == who->usernum) {
- CtdlLogPrintf(CTDL_INFO, "%s already associated; no action is taken\n", claimed_id);
+ syslog(LOG_INFO, "%s already associated; no action is taken", ChrPtr(claimed_id));
return(0);
}
else {
- CtdlLogPrintf(CTDL_INFO, "%s already belongs to another user\n", claimed_id);
+ syslog(LOG_INFO, "%s already belongs to another user", ChrPtr(claimed_id));
return(3);
}
}
/* Not already in the database, so attach it now */
- data_len = sizeof(long) + strlen(claimed_id) + 1;
+ data_len = sizeof(long) + StrLength(claimed_id) + 1;
data = malloc(data_len);
memcpy(data, &who->usernum, sizeof(long));
- memcpy(&data[sizeof(long)], claimed_id, strlen(claimed_id) + 1);
+ memcpy(&data[sizeof(long)], ChrPtr(claimed_id), StrLength(claimed_id) + 1);
- cdb_store(CDB_OPENID, claimed_id, strlen(claimed_id), data, data_len);
+ cdb_store(CDB_OPENID, ChrPtr(claimed_id), StrLength(claimed_id), data, data_len);
free(data);
snprintf(buf, sizeof buf, "User <%s> (#%ld) has claimed the OpenID URL %s\n",
- who->fullname, who->usernum, claimed_id);
- aide_message(buf, "OpenID claim");
- CtdlLogPrintf(CTDL_INFO, "%s", buf);
+ who->fullname, who->usernum, ChrPtr(claimed_id));
+ CtdlAideMessage(buf, "OpenID claim");
+ syslog(LOG_INFO, "%s", buf);
return(0);
}
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)) {
memcpy(&usernum, cdboi->ptr, sizeof(long));
if (usernum == usbuf->usernum) {
deleteme = strdup(cdboi->ptr + sizeof(long)),
- Put(keys, deleteme, strlen(deleteme), deleteme, generic_free_handler);
+ Put(keys, deleteme, strlen(deleteme), deleteme, NULL);
}
}
cdb_free(cdboi);
HashPos = GetNewHashPos(keys, 0);
while (GetNextHashPos(keys, HashPos, &len, &Key, &Value)!=0)
{
- CtdlLogPrintf(CTDL_DEBUG, "Deleting associated OpenID <%s>\n", 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
*/
while (cdboi = cdb_next_item(CDB_OPENID), cdboi != NULL) {
if (cdboi->len > sizeof(long)) {
memcpy(&usernum, cdboi->ptr, sizeof(long));
- if (getuserbynumber(&usbuf, usernum) != 0) {
+ if (CtdlGetUserByNumber(&usbuf, usernum) != 0) {
usbuf.fullname[0] = 0;
}
cprintf("%s|%ld|%s\n",
* verifying an OpenID (which will of course be attached to the account)
*/
void cmd_oidc(char *argbuf) {
- struct ctdl_openid *oiddata = (struct ctdl_openid *) CC->openid_data;
+ ctdl_openid *oiddata = (ctdl_openid *) CC->openid_data;
if (!oiddata) {
cprintf("%d You have not verified an OpenID yet.\n", ERROR);
}
-
-
/*
* Detach an OpenID from the currently logged in account
*/
/*
* Attempt to auto-create a new Citadel account using the nickname from Simple Registration Extension
*/
-int openid_create_user_via_sreg(char *claimed_id, HashList *sreg_keys)
+int openid_create_user_via_sreg(StrBuf *claimed_id, HashList *sreg_keys)
{
char *desired_name = NULL;
char new_password[32];
+ long len;
if (config.c_auth_mode != AUTHMODE_NATIVE) return(1);
if (config.c_disable_newu) return(2);
if (CC->logged_in) return(3);
if (!GetHash(sreg_keys, "sreg.nickname", 13, (void *) &desired_name)) return(4);
- CtdlLogPrintf(CTDL_DEBUG, "The desired account name is <%s>\n", desired_name);
+ syslog(LOG_DEBUG, "The desired account name is <%s>", desired_name);
- if (!getuser(&CC->user, desired_name)) {
- CtdlLogPrintf(CTDL_DEBUG, "<%s> is already taken by another user.\n", desired_name);
+ len = cutuserkey(desired_name);
+ if (!CtdlGetUser(&CC->user, desired_name)) {
+ syslog(LOG_DEBUG, "<%s> is already taken by another user.", desired_name);
memset(&CC->user, 0, sizeof(struct ctdluser));
return(5);
}
/* The desired account name is available. Create the account and log it in! */
- if (create_user(desired_name, 1)) return(6);
+ if (create_user(desired_name, len, 1)) return(6);
snprintf(new_password, sizeof new_password, "%08lx%08lx", random(), random());
CtdlSetPassword(new_password);
* If a user account exists which is associated with the Claimed ID, log it in and return zero.
* Otherwise it returns nonzero.
*/
-int login_via_openid(char *claimed_id)
+int login_via_openid(StrBuf *claimed_id)
{
struct cdbdata *cdboi;
long usernum = 0;
- cdboi = cdb_fetch(CDB_OPENID, claimed_id, strlen(claimed_id));
+ cdboi = cdb_fetch(CDB_OPENID, ChrPtr(claimed_id), StrLength(claimed_id));
if (cdboi == NULL) {
return(-1);
}
memcpy(&usernum, cdboi->ptr, sizeof(long));
cdb_free(cdboi);
- if (!getuserbynumber(&CC->user, usernum)) {
+ if (!CtdlGetUserByNumber(&CC->user, usernum)) {
/* Now become the user we just created */
safestrncpy(CC->curr_user, CC->user.fullname, sizeof CC->curr_user);
do_login();
/*
* Locate a <link> tag and, given its 'rel=' parameter, return its 'href' parameter
*/
-void extract_link(char *target_buf, int target_size, char *rel, char *source_buf)
+void extract_link(StrBuf *target_buf, const char *rel, long repllen, StrBuf *source_buf)
{
- char *ptr = source_buf;
+ int i;
+ const char *ptr;
+ const char *href_start = NULL;
+ const char *href_end = NULL;
+ const char *link_tag_start = NULL;
+ const char *link_tag_end = NULL;
+ const char *rel_start = NULL;
+ const char *rel_end = NULL;
if (!target_buf) return;
if (!rel) return;
if (!source_buf) return;
- target_buf[0] = 0;
-
- while (ptr = bmstrcasestr(ptr, "<link"), ptr != NULL) {
+ ptr = ChrPtr(source_buf);
- char work_buffer[2048];
- char *link_tag_start = NULL;
- char *link_tag_end = NULL;
-
- char rel_tag[2048];
- char href_tag[2048];
+ FlushStrBuf(target_buf);
+ while (ptr = cbmstrcasestr(ptr, "<link"), ptr != NULL) {
link_tag_start = ptr;
link_tag_end = strchr(ptr, '>');
- rel_tag[0] = 0;
- href_tag[0] = 0;
-
- if ((link_tag_end) && (link_tag_end > link_tag_start)) {
- int len;
- len = link_tag_end - link_tag_start;
- if (len > sizeof work_buffer) len = sizeof work_buffer;
- memcpy(work_buffer, link_tag_start, len);
-
- char *rel_start = NULL;
- char *rel_end = NULL;
- rel_start = bmstrcasestr(work_buffer, "rel=");
- if (rel_start) {
- rel_start = strchr(rel_start, '\"');
- if (rel_start) {
- ++rel_start;
- rel_end = strchr(rel_start, '\"');
- if ((rel_end) && (rel_end > rel_start)) {
- safestrncpy(rel_tag, rel_start, rel_end - rel_start + 1);
- }
- }
- }
+ if (link_tag_end == NULL)
+ break;
+ for (i=0; i < 1; i++ ){
+ rel_start = cbmstrcasestr(link_tag_start, "rel=");
+ if ((rel_start == NULL) ||
+ (rel_start > link_tag_end))
+ continue;
+
+ rel_start = strchr(rel_start, '\"');
+ if ((rel_start == NULL) ||
+ (rel_start > link_tag_end))
+ continue;
+ ++rel_start;
+ rel_end = strchr(rel_start, '\"');
+ if ((rel_end == NULL) ||
+ (rel_end == rel_start) ||
+ (rel_end >= link_tag_end) )
+ continue;
+ if (strncasecmp(rel, rel_start, repllen)!= 0)
+ continue; /* didn't match? never mind... */
+
+ href_start = cbmstrcasestr(link_tag_start, "href=");
+ if ((href_start == NULL) ||
+ (href_start >= link_tag_end))
+ continue;
+ href_start = strchr(href_start, '\"');
+ if ((href_start == NULL) |
+ (href_start >= link_tag_end))
+ continue;
+ ++href_start;
+ href_end = strchr(href_start, '\"');
+ if ((href_end == NULL) ||
+ (href_end == href_start) ||
+ (href_start >= link_tag_end))
+ continue;
+ StrBufPlain(target_buf, href_start, href_end - href_start);
+ }
+ ptr = link_tag_end;
+ }
+}
- char *href_start = NULL;
- char *href_end = NULL;
- href_start = bmstrcasestr(work_buffer, "href=");
- if (href_start) {
- href_start = strchr(href_start, '\"');
- if (href_start) {
- ++href_start;
- href_end = strchr(href_start, '\"');
- if ((href_end) && (href_end > href_start)) {
- safestrncpy(href_tag, href_start, href_end - href_start + 1);
- }
- }
- }
- if (!strcasecmp(rel, rel_tag)) {
- safestrncpy(target_buf, href_tag, target_size);
- return;
+/*
+ * Wrapper for curl_easy_init() that includes the options common to all calls
+ * used in this module.
+ */
+CURL *ctdl_openid_curl_easy_init(char *errmsg) {
+ CURL *curl;
+
+ curl = curl_easy_init();
+ if (!curl) {
+ return(curl);
+ }
+
+ curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
+ curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
+
+ if (errmsg) {
+ curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errmsg);
+ }
+ curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+#ifdef CURLOPT_HTTP_CONTENT_DECODING
+ curl_easy_setopt(curl, CURLOPT_HTTP_CONTENT_DECODING, 1);
+ curl_easy_setopt(curl, CURLOPT_ENCODING, "");
+#endif
+ curl_easy_setopt(curl, CURLOPT_USERAGENT, CITADEL);
+ curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30); /* die after 30 seconds */
+
+ if (
+ (!IsEmptyStr(config.c_ip_addr))
+ && (strcmp(config.c_ip_addr, "*"))
+ && (strcmp(config.c_ip_addr, "::"))
+ && (strcmp(config.c_ip_addr, "0.0.0.0"))
+ ) {
+ curl_easy_setopt(curl, CURLOPT_INTERFACE, config.c_ip_addr);
+ }
+
+ return(curl);
+}
+
+
+struct xrds {
+ StrBuf *CharData;
+ int nesting_level;
+ int in_xrd;
+ int current_service_priority;
+ int selected_service_priority;
+ StrBuf *current_service_uri;
+ StrBuf *selected_service_uri;
+ int current_service_is_oid2auth;
+};
+
+
+void xrds_xml_start(void *data, const char *supplied_el, const char **attr) {
+ struct xrds *xrds = (struct xrds *) data;
+ int i;
+
+ ++xrds->nesting_level;
+
+ if (!strcasecmp(supplied_el, "XRD")) {
+ ++xrds->in_xrd;
+ }
+
+ 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);
+}
+
+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;
+ }
+
+ 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;
}
+ }
- ++ptr;
+ 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")) {
+ 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);
+}
-struct fh_data {
- char *buf;
- int total_bytes_received;
- int maxbytes;
-};
+void xrds_xml_chardata(void *data, const XML_Char *s, int len) {
+ struct xrds *xrds = (struct xrds *) data;
+ StrBufAppendBufPlain (xrds->CharData, s, len, 0);
+}
-size_t fh_callback(void *ptr, size_t size, size_t nmemb, void *stream)
-{
- struct fh_data *fh = (struct fh_data *) stream;
- int got_bytes = (size * nmemb);
- if (fh->total_bytes_received + got_bytes > fh->maxbytes) {
- got_bytes = fh->maxbytes - fh->total_bytes_received;
+/*
+ * Parse an XRDS document.
+ * 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));
+
+ 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);
+ 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);
}
- if (got_bytes > 0) {
- memcpy(&fh->buf[fh->total_bytes_received], ptr, got_bytes);
- fh->total_bytes_received += got_bytes;
+ else {
+ syslog(LOG_ALERT, "Cannot create XML parser");
+ }
+
+ 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;
}
- return (size * nmemb); /* always succeed; libcurl doesn't need to know if we truncated it */
+ FreeStrBuf(&xrds.CharData);
+ FreeStrBuf(&xrds.current_service_uri);
+ FreeStrBuf(&xrds.selected_service_uri);
+
+ return(return_value);
}
/*
- * Begin an HTTP fetch (returns number of bytes actually fetched, or -1 for error) using libcurl.
+ * Callback function for perform_openid2_discovery()
+ * We're interested in the X-XRDS-Location: header.
+ */
+size_t yadis_headerfunction(void *ptr, size_t size, size_t nmemb, void *userdata) {
+ char hdr[1024];
+ StrBuf **x_xrds_location = (StrBuf **) userdata;
+
+ memcpy(hdr, ptr, (size*nmemb));
+ hdr[size*nmemb] = 0;
+
+ if (!strncasecmp(hdr, "X-XRDS-Location:", 16)) {
+ *x_xrds_location = NewStrBufPlain(&hdr[16], ((size*nmemb)-16));
+ StrBufTrim(*x_xrds_location);
+ }
+
+ return(size * nmemb);
+}
+
+
+/* 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 '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.
+ * If successful, returns nonzero and calls parse_xrds_document() to act upon the received data.
+ * If fails, returns 0 and does nothing else.
*/
-int fetch_http(char *url, char *target_buf, int maxbytes, int normalize_len)
-{
+int perform_openid2_discovery(StrBuf *YadisURL) {
+ ctdl_openid *oiddata = (ctdl_openid *) CC->openid_data;
+ int docbytes = (-1);
+ StrBuf *ReplyBuf = NULL;
+ int return_value = 0;
CURL *curl;
- CURLcode res;
+ CURLcode result;
char errmsg[1024] = "";
- struct fh_data fh = {
- target_buf,
- 0,
- maxbytes
- };
- char *effective_url = NULL;
+ struct curl_slist *my_headers = NULL;
+ StrBuf *x_xrds_location = NULL;
- if (!url) return(-1);
- if (!target_buf) return(-1);
- memset(target_buf, 0, maxbytes);
+ if (!YadisURL) return(0);
+ syslog(LOG_DEBUG, "perform_openid2_discovery(%s)", ChrPtr(YadisURL));
+ if (StrLength(YadisURL) == 0) return(0);
- curl = curl_easy_init();
- if (!curl) {
- CtdlLogPrintf(CTDL_ALERT, "Unable to initialize libcurl.\n");
- return(-1);
+ ReplyBuf = NewStrBuf();
+ if (!ReplyBuf) return(0);
+
+ curl = ctdl_openid_curl_easy_init(errmsg);
+ if (!curl) return(0);
+
+ curl_easy_setopt(curl, CURLOPT_URL, ChrPtr(YadisURL));
+ 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);
+
+ curl_easy_setopt(curl, CURLOPT_WRITEHEADER, &x_xrds_location);
+ curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, yadis_headerfunction);
+
+ result = curl_easy_perform(curl);
+ if (result) {
+ syslog(LOG_DEBUG, "libcurl error %d: %s", result, errmsg);
}
+ curl_slist_free_all(my_headers);
+ curl_easy_cleanup(curl);
+ docbytes = StrLength(ReplyBuf);
- curl_easy_setopt(curl, CURLOPT_URL, url);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
- curl_easy_setopt(curl, CURLOPT_WRITEDATA, &fh);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fh_callback);
- curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errmsg);
- curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
-#ifdef CURLOPT_HTTP_CONTENT_DECODING
- curl_easy_setopt(curl, CURLOPT_HTTP_CONTENT_DECODING, 1);
- curl_easy_setopt(curl, CURLOPT_ENCODING, "");
-#endif
- curl_easy_setopt(curl, CURLOPT_USERAGENT, CITADEL);
- curl_easy_setopt(curl, CURLOPT_TIMEOUT, 180); /* die after 180 seconds */
- if (!IsEmptyStr(config.c_ip_addr)) {
- curl_easy_setopt(curl, CURLOPT_INTERFACE, config.c_ip_addr);
+ /*
+ * The response from the server will be one of:
+ *
+ * Option 1: An HTML document with a <head> element that includes a <meta> element with http-equiv
+ * attribute, X-XRDS-Location,
+ */
+ /* FIXME handle this somehow */
+
+ /*
+ * Option 2: HTTP response-headers that include an X-XRDS-Location response-header,
+ * together with a document.
+ * 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.
+ *
+ * If the X-XRDS-Location header was delivered, we know about it at this point...
+ */
+ if ( (x_xrds_location)
+ && (strcmp(ChrPtr(x_xrds_location), ChrPtr(YadisURL)))
+ ) {
+ syslog(LOG_DEBUG, "X-XRDS-Location: %s ... recursing!", ChrPtr(x_xrds_location));
+ return_value = perform_openid2_discovery(x_xrds_location);
+ FreeStrBuf(&x_xrds_location);
}
- res = curl_easy_perform(curl);
- if (res) {
- CtdlLogPrintf(CTDL_DEBUG, "fetch_http() libcurl error %d: %s\n", res, errmsg);
+
+ /*
+ * Option 4: the returned web page may *be* an XRDS document. Try to parse it.
+ */
+ else if (docbytes >= 0) {
+ return_value = parse_xrds_document(ReplyBuf);
}
- if (normalize_len > 0) {
- curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &effective_url);
- safestrncpy(url, effective_url, normalize_len);
+
+ /*
+ * Option 5: if all else fails, attempt HTML based discovery.
+ */
+ if (return_value == 0) {
+ syslog(LOG_DEBUG, "Attempting HTML discovery");
+ 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;
+ }
}
- curl_easy_cleanup(curl);
- return fh.total_bytes_received;
+
+ if (ReplyBuf != NULL) {
+ FreeStrBuf(&ReplyBuf);
+ }
+ return(return_value);
}
* Setup an OpenID authentication
*/
void cmd_oids(char *argbuf) {
- char return_to[1024];
- char trust_root[1024];
- int i;
- char buf[SIZ];
struct CitContext *CCC = CC; /* CachedCitContext - performance boost */
- struct ctdl_openid *oiddata;
-
- oiddata = (struct ctdl_openid *) CCC->openid_data;
-
- if (oiddata != NULL) {
- if (oiddata->sreg_keys != NULL) {
- DeleteHash(&oiddata->sreg_keys);
- oiddata->sreg_keys = NULL;
- }
- free(CCC->openid_data);
- }
- oiddata = malloc(sizeof(struct ctdl_openid));
+ const char *Pos = NULL;
+ StrBuf *ArgBuf = NULL;
+ StrBuf *ReplyBuf = NULL;
+ StrBuf *return_to = NULL;
+ StrBuf *trust_root = NULL;
+ StrBuf *openid_delegate = NULL;
+ StrBuf *RedirectUrl = NULL;
+ ctdl_openid *oiddata;
+ int discovery_succeeded = 0;
+
+ Free_ctdl_openid ((ctdl_openid**)&CCC->openid_data);
+
+ 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;
}
- memset(oiddata, 0, sizeof(struct ctdl_openid));
+ memset(oiddata, 0, sizeof(ctdl_openid));
CCC->openid_data = (void *) oiddata;
- extract_token(oiddata->claimed_id, argbuf, 0, '|', sizeof oiddata->claimed_id);
- extract_token(return_to, argbuf, 1, '|', sizeof return_to);
- extract_token(trust_root, argbuf, 2, '|', sizeof trust_root);
+ 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));
- i = fetch_http(oiddata->claimed_id, buf, sizeof buf - 1, sizeof oiddata->claimed_id);
- CtdlLogPrintf(CTDL_DEBUG, "Normalized URL and Claimed ID is: %s\n", oiddata->claimed_id);
- buf[sizeof buf - 1] = 0;
- if (i > 0) {
- char openid_delegate[1024];
+ StrBufExtract_NextToken(oiddata->claimed_id, ArgBuf, &Pos, '|');
+ StrBufExtract_NextToken(return_to, ArgBuf, &Pos, '|');
+ StrBufExtract_NextToken(trust_root, ArgBuf, &Pos, '|');
- extract_link(oiddata->server, sizeof oiddata->server, "openid.server", buf);
- extract_link(openid_delegate, sizeof openid_delegate, "openid.delegate", buf);
+ syslog(LOG_DEBUG, "User-Supplied Identifier is: %s", ChrPtr(oiddata->claimed_id));
- if (IsEmptyStr(oiddata->server)) {
- cprintf("%d There is no OpenID identity provider at this URL.\n", ERROR);
- return;
- }
+
+ /********** OpenID 2.0 section 7.3 - Discovery **********/
+
+ /* Section 7.3.1 says we have to attempt XRI based discovery.
+ * 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.
+ */
+
+ /* Attempt section 7.3.2 (Yadis discovery) and section 7.3.3 (HTML discovery);
+ */
+ 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);
+ }
+
+ 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 (IsEmptyStr(openid_delegate)) {
- safestrncpy(openid_delegate, oiddata->claimed_id, sizeof openid_delegate);
+ if (StrLength(openid_delegate) == 0) {
+ StrBufPlain(openid_delegate, SKEY(oiddata->claimed_id));
}
/* Assemble a URL to which the user-agent will be redirected. */
- char redirect_string[4096];
- char escaped_identity[512];
- char escaped_return_to[2048];
- char escaped_trust_root[1024];
- char escaped_sreg_optional[256];
-
- urlesc(escaped_identity, sizeof escaped_identity, openid_delegate);
- 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,dob,gender");
-
- snprintf(redirect_string, sizeof redirect_string,
- "%s"
- "?openid.mode=checkid_setup"
- "&openid.identity=%s"
- "&openid.return_to=%s"
- "&openid.trust_root=%s"
- "&openid.sreg.optional=%s"
- ,
- oiddata->server,
- escaped_identity,
- escaped_return_to,
- escaped_trust_root,
- escaped_sreg_optional
- );
- cprintf("%d %s\n", CIT_OK, redirect_string);
- return;
+
+ 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));
}
-
- cprintf("%d Unable to fetch OpenID URL\n", ERROR);
+
+ FreeStrBuf(&ArgBuf);
+ FreeStrBuf(&ReplyBuf);
+ FreeStrBuf(&return_to);
+ FreeStrBuf(&trust_root);
+ FreeStrBuf(&openid_delegate);
+ FreeStrBuf(&RedirectUrl);
}
* Finalize an OpenID authentication
*/
void cmd_oidf(char *argbuf) {
+ long len;
char buf[2048];
char thiskey[1024];
char thisdata[1024];
HashList *keys = NULL;
- struct ctdl_openid *oiddata = (struct ctdl_openid *) CC->openid_data;
+ ctdl_openid *oiddata = (ctdl_openid *) CC->openid_data;
+ if (oiddata == NULL) {
+ cprintf("%d run OIDS first.\n", ERROR + INTERNAL_ERROR);
+ return;
+ }
+ if (StrLength(oiddata->op_url) == 0){
+ cprintf("%d need a remote server to authenticate against\n", ERROR + ILLEGAL_VALUE);
+ return;
+ }
keys = NewHash(1, NULL);
if (!keys) {
cprintf("%d NewHash() failed\n", ERROR + INTERNAL_ERROR);
return;
}
-
cprintf("%d Transmit OpenID data now\n", START_CHAT_MODE);
while (client_getln(buf, sizeof buf), strcmp(buf, "000")) {
- extract_token(thiskey, buf, 0, '|', sizeof thiskey);
+ len = extract_token(thiskey, buf, 0, '|', sizeof thiskey);
+ if (len < 0)
+ len = sizeof(thiskey) - 1;
extract_token(thisdata, buf, 1, '|', sizeof thisdata);
- CtdlLogPrintf(CTDL_DEBUG, "%s: [%d] %s\n", thiskey, strlen(thisdata), thisdata);
- Put(keys, thiskey, strlen(thiskey), strdup(thisdata), generic_free_handler);
+ 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 */
- CtdlLogPrintf(CTDL_DEBUG, "About to validate the signature...\n");
+ syslog(LOG_DEBUG, "About to validate the signature...");
CURL *curl;
CURLcode res;
char k_keyname[128];
char k_o_keyname[128];
char *k_value = NULL;
- char valbuf[1024];
-
- struct fh_data fh = {
- valbuf,
- 0,
- sizeof valbuf
- };
+ StrBuf *ReplyBuf;
curl_formadd(&formpost, &lastptr,
CURLFORM_COPYNAME, "openid.mode",
CURLFORM_COPYCONTENTS, "check_authentication",
CURLFORM_END);
- CtdlLogPrintf(CTDL_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);
- CtdlLogPrintf(CTDL_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);
- CtdlLogPrintf(CTDL_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);
- CtdlLogPrintf(CTDL_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);
- CtdlLogPrintf(CTDL_DEBUG, "%25s : %s\n", k_o_keyname, k_value);
+ syslog(LOG_DEBUG, "%25s : %s", k_o_keyname, k_value);
}
else {
- CtdlLogPrintf(CTDL_INFO, "OpenID: signed field '%s' is missing\n",
+ syslog(LOG_INFO, "OpenID: signed field '%s' is missing",
k_keyname);
}
}
}
}
+
+ ReplyBuf = NewStrBuf();
- curl = curl_easy_init();
- curl_easy_setopt(curl, CURLOPT_URL, oiddata->server);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
- curl_easy_setopt(curl, CURLOPT_WRITEDATA, &fh);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fh_callback);
+ curl = ctdl_openid_curl_easy_init(errmsg);
+ 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);
- curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errmsg);
- curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
-#ifdef CURLOPT_HTTP_CONTENT_DECODING
- curl_easy_setopt(curl, CURLOPT_HTTP_CONTENT_DECODING, 1);
- curl_easy_setopt(curl, CURLOPT_ENCODING, "");
-#endif
- curl_easy_setopt(curl, CURLOPT_USERAGENT, CITADEL);
- curl_easy_setopt(curl, CURLOPT_TIMEOUT, 180); /* die after 180 seconds */
- if (!IsEmptyStr(config.c_ip_addr)) {
- curl_easy_setopt(curl, CURLOPT_INTERFACE, config.c_ip_addr);
- }
res = curl_easy_perform(curl);
if (res) {
- CtdlLogPrintf(CTDL_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);
- valbuf[fh.total_bytes_received] = 0;
-
- if (bmstrcasestr(valbuf, "is_valid:true")) {
+ if (cbmstrcasestr(ChrPtr(ReplyBuf), "is_valid:true")) {
oiddata->verified = 1;
}
+ FreeStrBuf(&ReplyBuf);
- CtdlLogPrintf(CTDL_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");
- CtdlLogPrintf(CTDL_DEBUG, "OpenID attach succeeded\n");
+ syslog(LOG_DEBUG, "OpenID attach succeeded");
}
else {
cprintf("fail\n");
- CtdlLogPrintf(CTDL_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();
- CtdlLogPrintf(CTDL_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");
- CtdlLogPrintf(CTDL_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();
- CtdlLogPrintf(CTDL_DEBUG, "Successfully auto-created new user\n");
+ syslog(LOG_DEBUG, "Successfully auto-created new user");
}
/*
else {
char *desired_name = NULL;
cprintf("verify_only\n");
- cprintf("%s\n", oiddata->claimed_id);
+ cprintf("%s\n", ChrPtr(oiddata->claimed_id));
if (GetHash(keys, "sreg.nickname", 13, (void *) &desired_name)) {
cprintf("%s\n", desired_name);
}
else {
cprintf("\n");
}
- CtdlLogPrintf(CTDL_DEBUG, "The desired Simple Registration name is already taken.\n");
+ syslog(LOG_DEBUG, "The desired Simple Registration name is already taken.");
}
}
}
/**************************************************************************/
-/*
- * This cleanup function blows away the temporary memory used by this module.
- */
-void openid_cleanup_function(void) {
- struct ctdl_openid *oiddata = (struct ctdl_openid *) CC->openid_data;
-
- if (oiddata != NULL) {
- CtdlLogPrintf(CTDL_DEBUG, "Clearing OpenID session state\n");
- if (oiddata->sreg_keys != NULL) {
- DeleteHash(&oiddata->sreg_keys);
- oiddata->sreg_keys = NULL;
- }
- free(oiddata);
- }
-}
CTDL_MODULE_INIT(openid_rp)
}
CtdlRegisterSessionHook(openid_cleanup_function, EVT_LOGOUT);
CtdlRegisterUserHook(openid_purge, EVT_PURGEUSER);
+ openid_level_supported = 1; /* This module supports OpenID 1.0 only */
}
- /* return our Subversion id for the Log */
- return "$Id$";
+ /* return our module name for the log */
+ return "openid_rp";
}
projects / citadel.git / blobdiff