controls.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
*
* Copyright %G% Sun Microsystems, Inc.
* All Rights Reserved
*
*
* Comments:
*
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <string.h>
#include "lber.h"
#include "ldap.h"
#include "ldap-private.h"
#include "ldap-int.h"
static int ldap_control_copy_contents(LDAPControl *, LDAPControl *);
void ldap_control_free (LDAPControl *ctrl)
{
if (ctrl != NULL){
if (ctrl->ldctl_oid)
free (ctrl->ldctl_oid);
if (ctrl->ldctl_value.bv_val != NULL)
free (ctrl->ldctl_value.bv_val);
free ((char *)ctrl);
}
return;
}
void ldap_controls_free (LDAPControl **ctrls)
{
int i;
if (ctrls == NULL)
return;
for (i = 0; ctrls[i] != NULL; i++){
ldap_control_free(ctrls[i]);
}
free((char *)ctrls);
}
LDAPControl * ldap_control_dup(LDAPControl *ctrl)
{
LDAPControl *newctrl;
if ((newctrl = (LDAPControl *)calloc(1, sizeof(LDAPControl))) == NULL)
return (NULL);
if (ldap_control_copy_contents(newctrl, ctrl) != LDAP_SUCCESS) {
free(newctrl);
return (NULL);
}
return(newctrl);
}
static int ldap_control_copy_contents(LDAPControl *ctrl_dst,
LDAPControl *ctrl_src)
{
size_t len;
if (NULL == ctrl_dst || NULL == ctrl_src) {
return (LDAP_PARAM_ERROR);
}
ctrl_dst->ldctl_iscritical = ctrl_src->ldctl_iscritical;
/* fill in the fields of this new control */
if ((ctrl_dst->ldctl_oid = strdup(ctrl_src->ldctl_oid)) == NULL) {
return (LDAP_NO_MEMORY);
}
len = (size_t)(ctrl_src->ldctl_value).bv_len;
if (ctrl_src->ldctl_value.bv_val == NULL || len <= 0) {
ctrl_dst->ldctl_value.bv_len = 0;
ctrl_dst->ldctl_value.bv_val = NULL;
} else {
ctrl_dst->ldctl_value.bv_len = len;
if ((ctrl_dst->ldctl_value.bv_val = malloc(len))
== NULL) {
free(ctrl_dst->ldctl_oid);
return (LDAP_NO_MEMORY);
}
SAFEMEMCPY(ctrl_dst->ldctl_value.bv_val,
ctrl_src->ldctl_value.bv_val, len);
}
return (LDAP_SUCCESS);
}
LDAPControl ** ldap_controls_dup(LDAPControl ** ctrls)
{
int i;
LDAPControl **newctrls;
for (i = 0; ctrls[i] != NULL; i++);
newctrls = (LDAPControl **)calloc(i+1, sizeof(LDAPControl*));
if (newctrls == NULL) {
return (NULL);
}
for (i = 0; ctrls[i] != NULL; i++) {
newctrls[i] = ldap_control_dup(ctrls[i]);
if (newctrls[i] == NULL) {
ldap_controls_free(newctrls);
return (NULL);
}
}
return (newctrls);
}
int ldap_controls_code (BerElement *ber, LDAPControl **ctrls)
{
int i, rc;
if (ctrls && ctrls[0]){
rc = ber_printf(ber, "t{", LDAP_TAG_CONTROL_LIST);
if (rc == -1){
ber_free(ber, 1);
return(LDAP_ENCODING_ERROR);
}
for (i = 0; ctrls[i] != NULL; i++){
rc = ber_printf(ber, "{s", ctrls[i]->ldctl_oid);
if (rc == -1){
ber_free(ber, 1);
return(LDAP_ENCODING_ERROR);
}
if (ctrls[i]->ldctl_iscritical){
rc = ber_printf(ber, "b", ctrls[i]->ldctl_iscritical);
if (rc == -1){
ber_free(ber, 1);
return(LDAP_ENCODING_ERROR);
}
}
if (ctrls[i]->ldctl_value.bv_val)
rc = ber_printf(ber, "o}", ctrls[i]->ldctl_value.bv_val, ctrls[i]->ldctl_value.bv_len);
else
rc = ber_printf(ber, "}");
if (rc == -1){
ber_free(ber, 1);
return(LDAP_ENCODING_ERROR);
}
}
rc = ber_printf(ber, "}");
if (rc == -1){
ber_free(ber, 1);
return(LDAP_ENCODING_ERROR);
}
}
return (LDAP_SUCCESS);
}
/* Decode the sequence of control from the ber, return a NULL terminated list of LDAPControl* */
LDAPControl ** ldap_controls_decode(BerElement *ber, int *errcode)
{
LDAPControl ** ctrls = NULL;
char *opaque;
unsigned int tag, len;
int i = 0, count = 0;
BerElement tmpber = *ber;
for (tag = ber_first_element(&tmpber, &len, &opaque);
tag != LBER_DEFAULT;
tag = ber_next_element(&tmpber, &len, opaque )) {
count ++;
ber_skip_tag(&tmpber, &len);
}
if ((ctrls = (LDAPControl **)calloc(count + 1, sizeof(LDAPControl *))) == NULL){
*errcode = LDAP_NO_MEMORY;
return(NULL);
}
for (tag = ber_first_element(ber, &len, &opaque );
tag != LBER_DEFAULT;
tag = ber_next_element (ber, &len, opaque )) {
LDAPControl *aCtrl;
unsigned int ttag, tlen;
if ((aCtrl = (LDAPControl *)calloc(1, sizeof(LDAPControl))) == NULL) {
*errcode = LDAP_NO_MEMORY;
ldap_controls_free(ctrls);
return (NULL);
}
if (ber_scanf(ber, "{a", &aCtrl->ldctl_oid) == LBER_ERROR){
*errcode = LDAP_PROTOCOL_ERROR;
free(aCtrl);
ldap_controls_free(ctrls);
return (NULL);
}
aCtrl->ldctl_iscritical = 0;
ttag = ber_peek_tag(ber, &tlen);
if (ttag == 0x01) { /* Boolean : criticality */
if (ber_scanf(ber, "b", &aCtrl->ldctl_iscritical) == LBER_ERROR){
*errcode = LDAP_PROTOCOL_ERROR;
free(aCtrl);
ldap_controls_free(ctrls);
return (NULL);
}
ttag = ber_peek_tag(ber, &tlen);
}
if (ttag == 0x04) { /* Octet string : value (it's optional)*/
if (ber_scanf(ber, "o", &aCtrl->ldctl_value) == LBER_ERROR){
*errcode = LDAP_PROTOCOL_ERROR;
free(aCtrl);
ldap_controls_free(ctrls);
return (NULL);
}
} else if (ttag != LBER_DEFAULT){
*errcode = LDAP_PROTOCOL_ERROR;
free(aCtrl);
ldap_controls_free(ctrls);
return (NULL);
}
if (ber_scanf(ber, "}") == LBER_ERROR){
*errcode = LDAP_PROTOCOL_ERROR;
free(aCtrl);
ldap_controls_free(ctrls);
return (NULL);
}
/* add aCtrl in ctrls */
ctrls[i++] = aCtrl;
}
return (ctrls);
}
/* build an allocated LDAPv3 control. Returns an LDAP error code. */
int ldap_build_control(char *oid, BerElement *ber, int freeber,
char iscritical, LDAPControl **ctrlp)
{
int rc;
struct berval *bvp;
if (ber == NULL) {
bvp = NULL;
} else {
/* allocate struct berval with contents of the BER encoding */
rc = ber_flatten(ber, &bvp);
if (freeber) {
ber_free(ber, 1);
}
if (rc == -1) {
return (LDAP_NO_MEMORY);
}
}
/* allocate the new control structure */
if ((*ctrlp = (LDAPControl *)calloc(1, sizeof (LDAPControl)))
== NULL) {
if (bvp != NULL) {
ber_bvfree(bvp);
}
return (LDAP_NO_MEMORY);
}
/* fill in the fields of this new control */
(*ctrlp)->ldctl_iscritical = iscritical;
if (((*ctrlp)->ldctl_oid = strdup(oid)) == NULL) {
free(*ctrlp);
*ctrlp = NULL;
if (bvp != NULL) {
ber_bvfree(bvp);
}
return (LDAP_NO_MEMORY);
}
if (bvp == NULL) {
(*ctrlp)->ldctl_value.bv_len = 0;
(*ctrlp)->ldctl_value.bv_val = NULL;
} else {
(*ctrlp)->ldctl_value = *bvp; /* struct copy */
free(bvp); /* free container, not contents! */
}
return (LDAP_SUCCESS);
}