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/*
* saslconn.c
* $Id: saslconn.c,v 1.25 2006/02/13 17:20:32 ianmacd Exp $
*/
#include "ruby.h"
#include "rbldap.h"
#if defined(HAVE_SYS_TIME_H)
# include <sys/time.h>
#endif
#if defined(HAVE_UNISTD_H)
# include <unistd.h>
#endif
extern VALUE rb_ldap_conn_initialize (int argc, VALUE argv[], VALUE self);
extern VALUE rb_ldap_conn_rebind (VALUE self);
#if defined(HAVE_LDAP_SASL_BIND_S)
#include <sasl/sasl.h>
VALUE
rb_ldap_indifferent_hash_aref(VALUE hash, const char *key)
{
VALUE symval = rb_hash_aref(hash, ID2SYM(rb_intern(key)));
if (!NIL_P(symval))
{
return symval;
}
return rb_hash_aref(hash, rb_str_new2(key)); /* this could be Qnil */
}
int
rb_ldap_sasl_interaction (LDAP * ld, unsigned flags, void *de, void *in)
{
sasl_interact_t *interact = in;
VALUE options = (VALUE)de;
VALUE defvalue;
const char *dflt = NULL;
if (ld == NULL)
{
return LDAP_PARAM_ERROR;
}
if (flags == LDAP_SASL_INTERACTIVE)
{
rb_raise (rb_eLDAP_Error, "interactive bind not supported.");
}
while (!NIL_P(options) && interact->id != SASL_CB_LIST_END)
{
dflt = interact->defresult;
switch (interact->id)
{
case SASL_CB_GETREALM:
if (!NIL_P(defvalue = rb_ldap_indifferent_hash_aref(options, "realm")))
{
dflt = StringValuePtr(defvalue);
}
break;
case SASL_CB_AUTHNAME:
if (!NIL_P(defvalue = rb_ldap_indifferent_hash_aref(options, "authcid")))
{
dflt = StringValuePtr(defvalue);
}
break;
case SASL_CB_USER:
if (!NIL_P(defvalue = rb_ldap_indifferent_hash_aref(options, "authzid")))
{
dflt = StringValuePtr(defvalue);
}
break;
default:
/* Nothing. */
break;
}
if (dflt != NULL)
{
interact->result = dflt;
interact->len = strlen(dflt);
}
interact++;
}
return LDAP_SUCCESS;
}
/*
* call-seq:
* conn.sasl_bind(dn=nil, mech=nil, cred=nil, sctrls=nil, cctrls=nil, sasl_options=nil) => self
* conn.sasl_bind(dn=nil, mech=nil, cred=nil, sctrls=nil, cctrls=nil, sasl_options=nil)
* { |conn| } => nil
*
* Bind an LDAP connection, using the DN, +dn+, the mechanism, +mech+, and the
* credential, +cred+.
*
* +sctrls+ is an array of server controls, whilst +cctrls+ is an array of
* client controls.
*
* sasl_options is a hash which should have the following keys:
*
* - +:authcid+ and +:authzid+ for alternate SASL authentication
* - +realm+ to specify the SASL realm
*
* If a block is given, +self+ is yielded to the block.
*/
VALUE
rb_ldap_conn_sasl_bind (int argc, VALUE argv[], VALUE self)
{
RB_LDAP_DATA *ldapdata;
VALUE arg1, arg2, arg3, arg4, arg5, sasl_options, other_options = Qnil;
int version;
char *dn = NULL;
char *mechanism = NULL;
struct berval *cred = ALLOCA_N (struct berval, 1);
LDAPControl **serverctrls = NULL;
LDAPControl **clientctrls = NULL;
/*
struct berval *servercred = NULL;
char *sasl_realm = NULL;
char *sasl_authc_id = NULL;
char *sasl_authz_id = NULL;
char *sasl_secprops = NULL;
struct berval passwd = { 0, NULL };
*/
unsigned sasl_flags = LDAP_SASL_AUTOMATIC;
Data_Get_Struct (self, RB_LDAP_DATA, ldapdata);
if (!ldapdata->ldap)
{
if (rb_iv_get (self, "@args") != Qnil)
{
rb_ldap_conn_rebind (self);
GET_LDAP_DATA (self, ldapdata);
}
else
{
rb_raise (rb_eLDAP_InvalidDataError,
"The LDAP handler has already unbound.");
}
}
if (ldapdata->bind)
{
rb_raise (rb_eLDAP_Error, "already bound.");
};
switch (rb_scan_args (argc, argv, "25", &arg1, &arg2, &arg3, &arg4, &arg5, &sasl_options, &other_options))
{
case 7:
/* Parse through the hash. Currently there's only one option, nothing fancy needed. */
if (!NIL_P(rb_ldap_indifferent_hash_aref(other_options, "nocanon")))
{
/* Inspired by the ldapsearch -N option, inspired by the code in OpenLDAP (BSD style license) in clients/tools/common.c */
ldapdata->err = ldap_set_option( ldapdata->ldap, LDAP_OPT_X_SASL_NOCANON, LDAP_OPT_ON);
Check_LDAP_Result(ldapdata->err);
}
case 6:
/* nothing. this requires credentials to be parsed first. we'll get defaults after arg-scanning */
case 5:
if(!NIL_P(arg5))
clientctrls = rb_ldap_get_controls (arg5);
/* down seems more likely */
case 4:
if(!NIL_P(arg4))
serverctrls = rb_ldap_get_controls (arg4);
/* down seems more likely */
case 3:
if(!NIL_P(arg3))
{
cred->bv_val = StringValueCStr (arg3);
cred->bv_len = RSTRING_LEN (arg3);
}
/* down seems more likely */
case 2: /* don't need the cred for GSSAPI */
dn = StringValuePtr (arg1);
mechanism = StringValuePtr (arg2);
if (rb_iv_get (self, "@sasl_quiet") == Qtrue)
sasl_flags = LDAP_SASL_QUIET;
break;
default:
rb_bug ("rb_ldap_conn_bind_s");
}
ldap_get_option (ldapdata->ldap, LDAP_OPT_PROTOCOL_VERSION, &version);
if (version < LDAP_VERSION3)
{
version = LDAP_VERSION3;
ldapdata->err =
ldap_set_option (ldapdata->ldap, LDAP_OPT_PROTOCOL_VERSION, &version);
Check_LDAP_Result (ldapdata->err);
}
/* the following works for GSSAPI, at least */
ldapdata->err =
ldap_sasl_interactive_bind_s (ldapdata->ldap, dn, mechanism,
serverctrls, clientctrls, sasl_flags,
rb_ldap_sasl_interaction, (void*)sasl_options);
if (ldapdata->err == LDAP_SASL_BIND_IN_PROGRESS)
{
rb_raise (rb_eNotImpError,
"SASL authentication is not fully supported.");
/* How can I implement this with portability? */
/*
VALUE scred;
scred = rb_tainted_str_new(servercred->bv_val,
servercred->bv_len);
*/
}
else
{
Check_LDAP_Result (ldapdata->err);
ldapdata->bind = 1;
}
if (rb_block_given_p ())
{
rb_ensure (rb_yield, self, rb_ldap_conn_unbind, self);
return Qnil;
}
else
{
return self;
};
}
#else /* HAVE_LDAP_SASL_BIND_S */
VALUE
rb_ldap_conn_sasl_bind (int argc, VALUE argv[], VALUE self)
{
rb_notimplement ();
}
#endif /* HAVE_LDAP_SASL_BIND_S */
void
Init_ldap_saslconn ()
{
rb_define_method (rb_cLDAP_Conn, "sasl_bind", rb_ldap_conn_sasl_bind, -1);
}
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