diff options
Diffstat (limited to 'contrib/slapd-modules/proxyOld/proxyOld.c')
| -rw-r--r-- | contrib/slapd-modules/proxyOld/proxyOld.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/contrib/slapd-modules/proxyOld/proxyOld.c b/contrib/slapd-modules/proxyOld/proxyOld.c new file mode 100644 index 0000000..2da6888 --- /dev/null +++ b/contrib/slapd-modules/proxyOld/proxyOld.c @@ -0,0 +1,128 @@ +/* proxyOld.c - module for supporting obsolete (rev 05) proxyAuthz control */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2005-2022 The OpenLDAP Foundation. + * Portions Copyright 2005 by Howard Chu, Symas Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted only as authorized by the OpenLDAP + * Public License. + * + * A copy of this license is available in the file LICENSE in the + * top-level directory of the distribution or, alternatively, at + * <http://www.OpenLDAP.org/license.html>. + */ + +#include <portable.h> + +#include <slap.h> + +#include <lber.h> +/* +#include <lber_pvt.h> +#include <lutil.h> +*/ + +/* This code is based on draft-weltman-ldapv3-proxy-05. There are a lot + * of holes in that draft, it doesn't specify that the control is legal + * for Add operations, and it makes no mention of Extended operations. + * It also doesn't specify whether an empty LDAPDN is allowed in the + * control value. + * + * For usability purposes, we're copying the op / exop behavior from the + * newer -12 draft. + */ +#define LDAP_CONTROL_PROXY_AUTHZ05 "2.16.840.1.113730.3.4.12" + +static char *proxyOld_extops[] = { + LDAP_EXOP_MODIFY_PASSWD, + LDAP_EXOP_X_WHO_AM_I, + NULL +}; + +static int +proxyOld_parse( + Operation *op, + SlapReply *rs, + LDAPControl *ctrl ) +{ + int rc; + BerElement *ber; + ber_tag_t tag; + struct berval dn = BER_BVNULL; + struct berval authzDN = BER_BVNULL; + + + /* We hijack the flag for the new control. Clearly only one or the + * other can be used at any given time. + */ + if ( op->o_proxy_authz != SLAP_CONTROL_NONE ) { + rs->sr_text = "proxy authorization control specified multiple times"; + return LDAP_PROTOCOL_ERROR; + } + + op->o_proxy_authz = ctrl->ldctl_iscritical + ? SLAP_CONTROL_CRITICAL + : SLAP_CONTROL_NONCRITICAL; + + /* Parse the control value + * proxyAuthzControlValue ::= SEQUENCE { + * proxyDN LDAPDN + * } + */ + ber = ber_init( &ctrl->ldctl_value ); + if ( ber == NULL ) { + rs->sr_text = "ber_init failed"; + return LDAP_OTHER; + } + + tag = ber_scanf( ber, "{m}", &dn ); + + if ( tag == LBER_ERROR ) { + rs->sr_text = "proxyOld control could not be decoded"; + rc = LDAP_OTHER; + goto done; + } + if ( BER_BVISEMPTY( &dn )) { + Debug( LDAP_DEBUG_TRACE, + "proxyOld_parse: conn=%lu anonymous\n", + op->o_connid ); + authzDN.bv_val = ch_strdup(""); + } else { + Debug( LDAP_DEBUG_ARGS, + "proxyOld_parse: conn %lu ctrl DN=\"%s\"\n", + op->o_connid, dn.bv_val ); + rc = dnNormalize( 0, NULL, NULL, &dn, &authzDN, op->o_tmpmemctx ); + if ( rc != LDAP_SUCCESS ) { + goto done; + } + rc = slap_sasl_authorized( op, &op->o_ndn, &authzDN ); + if ( rc ) { + op->o_tmpfree( authzDN.bv_val, op->o_tmpmemctx ); + rs->sr_text = "not authorized to assume identity"; + /* new spec uses LDAP_PROXY_AUTHZ_FAILURE */ + rc = LDAP_INSUFFICIENT_ACCESS; + goto done; + } + } + free( op->o_ndn.bv_val ); + free( op->o_dn.bv_val ); + op->o_ndn = authzDN; + ber_dupbv( &op->o_dn, &authzDN ); + + Debug( LDAP_DEBUG_STATS, "conn=%lu op=%lu PROXYOLD dn=\"%s\"\n", + op->o_connid, op->o_opid, + authzDN.bv_len ? authzDN.bv_val : "anonymous" ); + rc = LDAP_SUCCESS; +done: + ber_free( ber, 1 ); + return rc; +} + +int init_module(int argc, char *argv[]) { + return register_supported_control( LDAP_CONTROL_PROXY_AUTHZ05, + SLAP_CTRL_GLOBAL|SLAP_CTRL_HIDE|SLAP_CTRL_ACCESS, proxyOld_extops, + proxyOld_parse, NULL ); +} |