int passwd_extop(
Operation *op,
SlapReply *rs )
{
struct berval id = {0, NULL}, hash, *rsp = NULL;
req_pwdexop_s *qpw = &op->oq_pwdexop;
req_extended_s qext = op->oq_extended;
Modifications *ml;
slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
int i, nhash;
char **hashes, idNul;
int rc;
BackendDB *op_be;
int freenewpw = 0;
struct berval dn = BER_BVNULL, ndn = BER_BVNULL;
assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );
if( op->o_dn.bv_len == 0 ) {
Statslog( LDAP_DEBUG_STATS, "%s PASSMOD\n",
op->o_log_prefix, 0, 0, 0, 0 );
rs->sr_text = "only authenticated users may change passwords";
return LDAP_STRONG_AUTH_REQUIRED;
}
qpw->rs_old.bv_len = 0;
qpw->rs_old.bv_val = NULL;
qpw->rs_new.bv_len = 0;
qpw->rs_new.bv_val = NULL;
qpw->rs_mods = NULL;
qpw->rs_modtail = NULL;
rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
&qpw->rs_old, &qpw->rs_new, &rs->sr_text );
if ( !BER_BVISNULL( &id )) {
idNul = id.bv_val[id.bv_len];
id.bv_val[id.bv_len] = '\0';
}
if ( rs->sr_err == LDAP_SUCCESS && !BER_BVISEMPTY( &id ) ) {
Statslog( LDAP_DEBUG_STATS, "%s PASSMOD id=\"%s\"%s%s\n",
op->o_log_prefix, id.bv_val,
qpw->rs_old.bv_val ? " old" : "",
qpw->rs_new.bv_val ? " new" : "", 0 );
} else {
Statslog( LDAP_DEBUG_STATS, "%s PASSMOD%s%s\n",
op->o_log_prefix,
qpw->rs_old.bv_val ? " old" : "",
qpw->rs_new.bv_val ? " new" : "", 0, 0 );
}
if ( rs->sr_err != LDAP_SUCCESS ) {
if ( !BER_BVISNULL( &id ))
id.bv_val[id.bv_len] = idNul;
return rs->sr_err;
}
if ( !BER_BVISEMPTY( &id ) ) {
rs->sr_err = dnPrettyNormal( NULL, &id, &dn, &ndn, op->o_tmpmemctx );
id.bv_val[id.bv_len] = idNul;
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_text = "Invalid DN";
rc = rs->sr_err;
goto error_return;
}
op->o_req_dn = dn;
op->o_req_ndn = ndn;
op->o_bd = select_backend( &op->o_req_ndn, 1 );
} else {
ber_dupbv_x( &dn, &op->o_dn, op->o_tmpmemctx );
ber_dupbv_x( &ndn, &op->o_ndn, op->o_tmpmemctx );
op->o_req_dn = dn;
op->o_req_ndn = ndn;
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
op->o_bd = op->o_conn->c_authz_backend;
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
}
if( op->o_bd == NULL ) {
if ( qpw->rs_old.bv_val != NULL ) {
rs->sr_text = "unwilling to verify old password";
rc = LDAP_UNWILLING_TO_PERFORM;
goto error_return;
}
#ifdef HAVE_CYRUS_SASL
rc = slap_sasl_setpass( op, rs );
#else
rs->sr_text = "no authz backend";
rc = LDAP_OTHER;
#endif
goto error_return;
}
if ( op->o_req_ndn.bv_len == 0 ) {
rs->sr_text = "no password is associated with the Root DSE";
rc = LDAP_UNWILLING_TO_PERFORM;
goto error_return;
}
/* If we've got a glued backend, check the real backend */
op_be = op->o_bd;
if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
op->o_bd = select_backend( &op->o_req_ndn, 0 );
}
if (backend_check_restrictions( op, rs,
(struct berval *)&slap_EXOP_MODIFY_PASSWD ) != LDAP_SUCCESS) {
rc = rs->sr_err;
goto error_return;
}
/* check for referrals */
if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
rc = rs->sr_err;
goto error_return;
}
/* This does not apply to multi-master case */
if(!( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ))) {
/* we SHOULD return a referral in this case */
BerVarray defref = op->o_bd->be_update_refs
? op->o_bd->be_update_refs : default_referral;
if( defref != NULL ) {
rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
NULL, NULL, LDAP_SCOPE_DEFAULT );
if(rs->sr_ref) {
rs->sr_flags |= REP_REF_MUSTBEFREED;
} else {
rs->sr_ref = defref;
}
rc = LDAP_REFERRAL;
goto error_return;
}
rs->sr_text = "shadow context; no update referral";
rc = LDAP_UNWILLING_TO_PERFORM;
goto error_return;
}
/* generate a new password if none was provided */
if ( qpw->rs_new.bv_len == 0 ) {
slap_passwd_generate( &qpw->rs_new );
if ( qpw->rs_new.bv_len ) {
rsp = slap_passwd_return( &qpw->rs_new );
freenewpw = 1;
}
}
if ( qpw->rs_new.bv_len == 0 ) {
rs->sr_text = "password generation failed";
rc = LDAP_OTHER;
goto error_return;
}
op->o_bd = op_be;
/* Give the backend a chance to handle this itself */
if ( op->o_bd->be_extended ) {
rs->sr_err = op->o_bd->be_extended( op, rs );
if ( rs->sr_err != LDAP_UNWILLING_TO_PERFORM &&
rs->sr_err != SLAP_CB_CONTINUE )
{
rc = rs->sr_err;
if ( rsp ) {
rs->sr_rspdata = rsp;
rsp = NULL;
}
goto error_return;
}
}
/* The backend didn't handle it, so try it here */
if( op->o_bd && !op->o_bd->be_modify ) {
rs->sr_text = "operation not supported for current user";
rc = LDAP_UNWILLING_TO_PERFORM;
goto error_return;
}
if ( qpw->rs_old.bv_val != NULL ) {
Entry *e = NULL;
rc = be_entry_get_rw( op, &op->o_req_ndn, NULL,
slap_schema.si_ad_userPassword, 0, &e );
if ( rc == LDAP_SUCCESS && e ) {
Attribute *a = attr_find( e->e_attrs,
slap_schema.si_ad_userPassword );
if ( a )
rc = slap_passwd_check( op, e, a, &qpw->rs_old, &rs->sr_text );
else
rc = 1;
be_entry_release_r( op, e );
if ( rc == LDAP_SUCCESS )
goto old_good;
}
rs->sr_text = "unwilling to verify old password";
rc = LDAP_UNWILLING_TO_PERFORM;
goto error_return;
}
old_good:
ml = ch_malloc( sizeof(Modifications) );
if ( !qpw->rs_modtail ) qpw->rs_modtail = &ml->sml_next;
if ( default_passwd_hash ) {
for ( nhash = 0; default_passwd_hash[nhash]; nhash++ );
hashes = default_passwd_hash;
} else {
nhash = 1;
hashes = (char **)defhash;
}
ml->sml_numvals = nhash;
ml->sml_values = ch_malloc( (nhash+1)*sizeof(struct berval) );
for ( i=0; hashes[i]; i++ ) {
slap_passwd_hash_type( &qpw->rs_new, &hash, hashes[i], &rs->sr_text );
if ( hash.bv_len == 0 ) {
if ( !rs->sr_text ) {
rs->sr_text = "password hash failed";
}
break;
}
ml->sml_values[i] = hash;
}
ml->sml_values[i].bv_val = NULL;
ml->sml_nvalues = NULL;
ml->sml_desc = slap_schema.si_ad_userPassword;
ml->sml_type = ml->sml_desc->ad_cname;
ml->sml_op = LDAP_MOD_REPLACE;
ml->sml_flags = 0;
ml->sml_next = qpw->rs_mods;
qpw->rs_mods = ml;
if ( hashes[i] ) {
rs->sr_err = LDAP_OTHER;
} else {
slap_callback *sc = op->o_callback;
op->o_tag = LDAP_REQ_MODIFY;
op->o_callback = &cb;
op->orm_modlist = qpw->rs_mods;
op->orm_no_opattrs = 0;
cb.sc_private = qpw; /* let Modify know this was pwdMod,
* if it cares... */
rs->sr_err = op->o_bd->be_modify( op, rs );
/* be_modify() might have shuffled modifications */
qpw->rs_mods = op->orm_modlist;
if ( rs->sr_err == LDAP_SUCCESS ) {
rs->sr_rspdata = rsp;
} else if ( rsp ) {
ber_bvfree( rsp );
rsp = NULL;
}
op->o_tag = LDAP_REQ_EXTENDED;
op->o_callback = sc;
}
rc = rs->sr_err;
op->oq_extended = qext;
error_return:;
if ( qpw->rs_mods ) {
slap_mods_free( qpw->rs_mods, 1 );
}
if ( freenewpw ) {
free( qpw->rs_new.bv_val );
}
if ( !BER_BVISNULL( &dn ) ) {
op->o_tmpfree( dn.bv_val, op->o_tmpmemctx );
BER_BVZERO( &op->o_req_dn );
}
if ( !BER_BVISNULL( &ndn ) ) {
op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
BER_BVZERO( &op->o_req_ndn );
}
return rc;
}
static int
ldap_back_exop_passwd(
Operation *op,
SlapReply *rs,
ldapconn_t **lcp )
{
ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
ldapconn_t *lc = *lcp;
req_pwdexop_s *qpw = &op->oq_pwdexop;
LDAPMessage *res;
ber_int_t msgid;
int rc, isproxy, freedn = 0;
int do_retry = 1;
char *text = NULL;
struct berval dn = op->o_req_dn,
ndn = op->o_req_ndn;
assert( lc != NULL );
assert( rs->sr_ctrls == NULL );
if ( BER_BVISNULL( &ndn ) && op->ore_reqdata != NULL ) {
/* NOTE: most of this code is mutated
* from slap_passwd_parse();
* But here we only need
* the first berval... */
ber_tag_t tag;
ber_len_t len = -1;
BerElementBuffer berbuf;
BerElement *ber = (BerElement *)&berbuf;
struct berval tmpid = BER_BVNULL;
if ( op->ore_reqdata->bv_len == 0 ) {
return LDAP_PROTOCOL_ERROR;
}
/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
ber_init2( ber, op->ore_reqdata, 0 );
tag = ber_scanf( ber, "{" /*}*/ );
if ( tag == LBER_ERROR ) {
return LDAP_PROTOCOL_ERROR;
}
tag = ber_peek_tag( ber, &len );
if ( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_ID ) {
tag = ber_get_stringbv( ber, &tmpid, LBER_BV_NOTERM );
if ( tag == LBER_ERROR ) {
return LDAP_PROTOCOL_ERROR;
}
}
if ( !BER_BVISEMPTY( &tmpid ) ) {
char idNull = tmpid.bv_val[tmpid.bv_len];
tmpid.bv_val[tmpid.bv_len] = '\0';
rs->sr_err = dnPrettyNormal( NULL, &tmpid, &dn,
&ndn, op->o_tmpmemctx );
tmpid.bv_val[tmpid.bv_len] = idNull;
if ( rs->sr_err != LDAP_SUCCESS ) {
/* should have been successfully parsed earlier! */
return rs->sr_err;
}
freedn = 1;
} else {
dn = op->o_dn;
ndn = op->o_ndn;
}
}
isproxy = ber_bvcmp( &ndn, &op->o_ndn );
Debug( LDAP_DEBUG_ARGS, "==> ldap_back_exop_passwd(\"%s\")%s\n",
dn.bv_val, isproxy ? " (proxy)" : "", 0 );
retry:
rc = ldap_passwd( lc->lc_ld, &dn,
qpw->rs_old.bv_val ? &qpw->rs_old : NULL,
qpw->rs_new.bv_val ? &qpw->rs_new : NULL,
op->o_ctrls, NULL, &msgid );
if ( rc == LDAP_SUCCESS ) {
/* TODO: set timeout? */
/* by now, make sure no timeout is used (ITS#6282) */
struct timeval tv = { -1, 0 };
if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res ) == -1 ) {
ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER, &rc );
rs->sr_err = rc;
} else {
/* only touch when activity actually took place... */
if ( li->li_idle_timeout ) {
lc->lc_time = op->o_time;
}
/* sigh. parse twice, because parse_passwd
* doesn't give us the err / match / msg info.
*/
rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
(char **)&rs->sr_matched,
&text,
NULL, &rs->sr_ctrls, 0 );
if ( rc == LDAP_SUCCESS ) {
if ( rs->sr_err == LDAP_SUCCESS ) {
struct berval newpw;
/* this never happens because
* the frontend is generating
* the new password, so when
* the passwd exop is proxied,
* it never delegates password
* generation to the remote server
*/
rc = ldap_parse_passwd( lc->lc_ld, res,
&newpw );
if ( rc == LDAP_SUCCESS &&
!BER_BVISNULL( &newpw ) )
{
rs->sr_type = REP_EXTENDED;
rs->sr_rspdata = slap_passwd_return( &newpw );
free( newpw.bv_val );
}
} else {
rc = rs->sr_err;
}
}
ldap_msgfree( res );
}
}
if ( rc != LDAP_SUCCESS ) {
rs->sr_err = slap_map_api2result( rs );
if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
do_retry = 0;
if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
goto retry;
}
}
if ( LDAP_BACK_QUARANTINE( li ) ) {
ldap_back_quarantine( op, rs );
}
if ( text ) rs->sr_text = text;
send_ldap_extended( op, rs );
/* otherwise frontend resends result */
rc = rs->sr_err = SLAPD_ABANDON;
} else if ( LDAP_BACK_QUARANTINE( li ) ) {
ldap_back_quarantine( op, rs );
}
ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_EXTENDED ], 1 );
ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
if ( freedn ) {
op->o_tmpfree( dn.bv_val, op->o_tmpmemctx );
op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
}
/* these have to be freed anyway... */
if ( rs->sr_matched ) {
free( (char *)rs->sr_matched );
rs->sr_matched = NULL;
}
if ( rs->sr_ctrls ) {
ldap_controls_free( rs->sr_ctrls );
rs->sr_ctrls = NULL;
}
if ( text ) {
free( text );
rs->sr_text = NULL;
}
/* in case, cleanup handler */
if ( lc == NULL ) {
*lcp = NULL;
}
return rc;
}
