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/** BEGIN COPYRIGHT BLOCK
* This Program is free 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; version 2 of the License.
*
* 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, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/* lasemail.cpp
* This file contains the Email LAS code.
*/
#include <ldap.h>
#include <nsacl/aclapi.h>
#define ACL_ATTR_EMAIL "email"
extern "C" {
extern int LASEmailEval(NSErr_t *errp, char *attr_name, CmpOp_t comparator, char *attr_pattern, ACLCachable_t *cachable, void **LAS_cookie, PList_t subject, PList_t resource, PList_t auth_info, PList_t global_auth);
extern void LASEmailFlush(void **las_cookie);
extern int LASEmailModuleInit();
}
/*
* LASEmailEval
* INPUT
* attr_name The string "email" - in lower case.
* comparator CMP_OP_EQ or CMP_OP_NE only
* attr_pattern A comma-separated list of emails
* (we currently support only one e-mail addr)
* *cachable Always set to ACL_NOT_CACHABLE.
* subject Subject property list
* resource Resource property list
* auth_info Authentication info, if any
* RETURNS
* retcode The usual LAS return codes.
*/
int LASEmailEval(NSErr_t *errp, char *attr_name, CmpOp_t comparator,
char *attr_pattern, ACLCachable_t *cachable,
void **LAS_cookie, PList_t subject, PList_t resource,
PList_t auth_info, PList_t global_auth)
{
char *uid;
char *email;
int rv;
LDAP *ld;
char *basedn;
LDAPMessage *res;
int numEntries;
char filter[1024];
int matched;
*cachable = ACL_NOT_CACHABLE;
*LAS_cookie = (void *)0;
if (strcmp(attr_name, ACL_ATTR_EMAIL) != 0) {
fprintf(stderr, "LASEmailEval called for incorrect attr \"%s\"\n",
attr_name);
return LAS_EVAL_INVALID;
}
if ((comparator != CMP_OP_EQ) && (comparator != CMP_OP_NE)) {
fprintf(stderr, "LASEmailEval called with incorrect comparator %d\n",
comparator);
return LAS_EVAL_INVALID;
}
if (!strcmp(attr_pattern, "anyone")) {
*cachable = ACL_INDEF_CACHABLE;
return comparator == CMP_OP_EQ ? LAS_EVAL_TRUE : LAS_EVAL_FALSE;
}
/* get the authenticated user name */
rv = ACL_GetAttribute(errp, ACL_ATTR_USER, (void **)&uid,
subject, resource, auth_info, global_auth);
if (rv != LAS_EVAL_TRUE) {
return rv;
}
/* We have an authenticated user */
if (!strcmp(attr_pattern, "all")) {
return comparator == CMP_OP_EQ ? LAS_EVAL_TRUE : LAS_EVAL_FALSE;
}
/* do an ldap lookup for: (& (uid=<user>) (mail=<email>)) */
rv = ACL_LDAPDatabaseHandle(errp, NULL, &ld, &basedn);
if (rv != LAS_EVAL_TRUE) {
fprintf(stderr, "unable to get LDAP handle\n");
return rv;
}
/* Formulate the filter -- assume single e-mail in attr_pattern */
/* If we support multiple comma separated e-mail addresses in the
* attr_pattern then the filter will look like:
* (& (uid=<user>) (| (mail=<email1>) (mail=<email2>)))
*/
sprintf(filter, "(& (uid=%s) (mail=%s))", uid, attr_pattern);
rv = ldap_search_s(ld, basedn, LDAP_SCOPE_SUBTREE, filter,
0, 0, &res);
if (rv != LDAP_SUCCESS)
{
fprintf(stderr, "ldap_search_s: %s\n", ldap_err2string(rv));
return LAS_EVAL_FAIL;
}
numEntries = ldap_count_entries(ld, res);
if (numEntries == 1) {
/* success */
LDAPMessage *entry = ldap_first_entry(ld, res);
char *dn = ldap_get_dn(ld, entry);
fprintf(stderr, "ldap_search_s: Entry found. DN: \"%s\"\n", dn);
ldap_memfree(dn);
matched = 1;
}
else if (numEntries == 0) {
/* not found -- but not an error */
fprintf(stderr, "ldap_search_s: Entry not found. Filter: \"%s\"\n",
filter);
matched = 0;
}
else if (numEntries > 0) {
/* Found more than one entry! */
fprintf(stderr, "ldap_search_s: Found more than one entry. Filter: \"%s\"\n",
filter);
return LAS_EVAL_FAIL;
}
if (comparator == CMP_OP_EQ) {
rv = (matched ? LAS_EVAL_TRUE : LAS_EVAL_FALSE);
}
else {
rv = (matched ? LAS_EVAL_FALSE : LAS_EVAL_TRUE);
}
return rv;
}
/* LASEmailFlush
* Deallocates any memory previously allocated by the LAS
*/
void
LASEmailFlush(void **las_cookie)
{
/* do nothing */
return;
}
/* LASEmailModuleInit --
* Register the e-mail LAS.
*
* To load this functions in the web server, compile the file in
* "lasemail.so" and add the following lines to the
* <ServerRoot>/https-<name>/config/obj.conf file. Be sure to change the
* "lasemail.so" portion to the full pathname. E.g. /nshome/lib/lasemail.so.
*
* Init fn="load-modules" funcs="LASEmailModuleInit" shlib="lasemail.so"
* Init fn="acl-register-module" module="lasemail" func="LASEmailModuleInit"
*/
int LASEmailModuleInit ()
{
NSErr_t err = NSERRINIT;
NSErr_t *errp = &err;
int rv;
rv = ACL_LasRegister(errp, ACL_ATTR_EMAIL, LASEmailEval, LASEmailFlush);
if (rv < 0) {
fprintf(stderr, "ACL_LasRegister failed. Error: %d\n", rv);
return rv;
}
return rv;
}
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