plug slapo-ppolicy related leaks (ITS#4665)

This commit is contained in:
Pierangelo Masarati 2006-09-03 10:53:38 +00:00
parent 7c64c28ad5
commit d95b88da21
2 changed files with 192 additions and 110 deletions

View File

@ -278,9 +278,13 @@ ppolicy_cf_default( ConfigArgs *c )
/* fallthrough to LDAP_MOD_ADD */
case LDAP_MOD_ADD:
Debug(LDAP_DEBUG_TRACE, "==> ppolicy_cf_default add\n", 0, 0, 0);
if ( pi->def_policy.bv_val )
if ( pi->def_policy.bv_val ) {
ber_memfree ( pi->def_policy.bv_val );
}
pi->def_policy = c->value_ndn;
ber_memfree( c->value_dn.bv_val );
BER_BVZERO( &c->value_dn );
BER_BVZERO( &c->value_ndn );
rc = 0;
break;
default:
@ -362,25 +366,29 @@ create_passcontrol( int exptime, int grace, LDAPPasswordPolicyError err )
LDAPControl *c;
struct berval bv;
if ((c = ch_calloc( sizeof( LDAPControl ), 1 )) == NULL) return NULL;
c = ch_calloc( sizeof( LDAPControl ), 1 );
if ( c == NULL ) {
return NULL;
}
c->ldctl_oid = LDAP_CONTROL_PASSWORDPOLICYRESPONSE;
c->ldctl_iscritical = 0;
c->ldctl_value.bv_val = NULL;
c->ldctl_value.bv_len = 0;
BER_BVZERO( &c->ldctl_value );
ber_init2( ber, NULL, LBER_USE_DER );
ber_printf(ber, "{" /*}*/ );
ber_printf( ber, "{" /*}*/ );
if (exptime >= 0) {
if ( exptime >= 0 ) {
ber_init2( b2, NULL, LBER_USE_DER );
ber_printf( b2, "ti", PPOLICY_EXPIRE, exptime );
ber_flatten2( b2, &bv, 1 );
(void)ber_free_buf(b2);
ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
ch_free( bv.bv_val );
} else if (grace > 0) {
} else if ( grace > 0 ) {
ber_init2( b2, NULL, LBER_USE_DER );
ber_printf( b2, "ti", PPOLICY_GRACE, grace );
ber_flatten2( b2, &bv, 1 );
(void)ber_free_buf(b2);
ber_printf( ber, "tO", PPOLICY_WARNING, &bv );
ch_free( bv.bv_val );
}
@ -392,13 +400,41 @@ create_passcontrol( int exptime, int grace, LDAPPasswordPolicyError err )
if (ber_flatten2( ber, &(c->ldctl_value), 1 ) == LBER_DEFAULT) {
ch_free(c);
(void)ber_free_buf(ber);
return NULL;
c = NULL;
}
(void)ber_free_buf(ber);
return c;
}
static LDAPControl **
add_passcontrol( Operation *op, SlapReply *rs, LDAPControl *ctrl )
{
LDAPControl **ctrls, **oldctrls = rs->sr_ctrls;
int n;
n = 0;
if ( oldctrls ) {
for ( ; oldctrls[n]; n++ )
;
}
n += 2;
ctrls = op->o_tmpcalloc( sizeof( LDAPControl * ), n, op->o_tmpmemctx );
n = 0;
if ( oldctrls ) {
for ( ; oldctrls[n]; n++ ) {
ctrls[n] = oldctrls[n];
}
}
ctrls[n] = ctrl;
ctrls[n+1] = NULL;
rs->sr_ctrls = ctrls;
return oldctrls;
}
static void
ppolicy_get( Operation *op, Entry *e, PassPolicy *pp )
{
@ -644,50 +680,75 @@ parse_pwdhistory( struct berval *bv, char **oid, time_t *oldtime, struct berval
assert (bv && (bv->bv_len > 0) && (bv->bv_val) && oldtime && oldpw );
if ( oid ) *oid = 0;
if ( oid ) {
*oid = 0;
}
*oldtime = (time_t)-1;
oldpw->bv_val = NULL;
oldpw->bv_len = 0;
BER_BVZERO( oldpw );
ber_dupbv( &nv, bv );
/* first get the time field */
for(i=0; (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++);
if ( i == nv.bv_len) goto exit_failure; /* couldn't locate the '#' separator */
for ( i = 0; (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
;
if ( i == nv.bv_len ) {
goto exit_failure; /* couldn't locate the '#' separator */
}
nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
ptr = nv.bv_val;
*oldtime = parse_time( ptr );
if (*oldtime == (time_t)-1) goto exit_failure;
if (*oldtime == (time_t)-1) {
goto exit_failure;
}
/* get the OID field */
for(ptr = &(nv.bv_val[i]);(i < nv.bv_len) && (nv.bv_val[i] != '#'); i++);
if ( i == nv.bv_len) goto exit_failure; /* couldn't locate the '#' separator */
for (ptr = &(nv.bv_val[i]); (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
;
if ( i == nv.bv_len ) {
goto exit_failure; /* couldn't locate the '#' separator */
}
nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
if ( oid ) *oid = ber_strdup( ptr );
if ( oid ) {
*oid = ber_strdup( ptr );
}
/* get the length field */
for(ptr = &(nv.bv_val[i]);(i < nv.bv_len) && (nv.bv_val[i] != '#'); i++);
if ( i == nv.bv_len) goto exit_failure; /* couldn't locate the '#' separator */
for ( ptr = &(nv.bv_val[i]); (i < nv.bv_len) && (nv.bv_val[i] != '#'); i++ )
;
if ( i == nv.bv_len ) {
goto exit_failure; /* couldn't locate the '#' separator */
}
nv.bv_val[i++] = '\0'; /* terminate the string & move to next field */
oldpw->bv_len = strtol( ptr, NULL, 10 );
if (errno == ERANGE) goto exit_failure;
if (errno == ERANGE) {
goto exit_failure;
}
/* lastly, get the octets of the string */
for(j=i, ptr = &(nv.bv_val[i]);i < nv.bv_len; i++);
if (i-j != oldpw->bv_len) goto exit_failure; /* length is wrong */
for ( j = i, ptr = &(nv.bv_val[i]); i < nv.bv_len; i++ )
;
if ( i - j != oldpw->bv_len) {
goto exit_failure; /* length is wrong */
}
npw.bv_val = ptr;
npw.bv_len = oldpw->bv_len;
ber_dupbv( oldpw, &npw );
ber_memfree( nv.bv_val );
return LDAP_SUCCESS;
exit_failure:
if (oid && *oid) { ber_memfree(*oid); *oid = NULL; }
if (oldpw->bv_val) {
ber_memfree( oldpw->bv_val); oldpw->bv_val = NULL;
oldpw->bv_len = 0;
exit_failure:;
if ( oid && *oid ) {
ber_memfree(*oid);
*oid = NULL;
}
ber_memfree(nv.bv_val);
if ( oldpw->bv_val ) {
ber_memfree( oldpw->bv_val);
BER_BVZERO( oldpw );
}
ber_memfree( nv.bv_val );
return LDAP_OTHER;
}
@ -775,13 +836,50 @@ free_pwd_history_list( pw_hist **l )
typedef struct ppbind {
slap_overinst *on;
int send_ctrl;
LDAPControl **oldctrls;
Modifications *mod;
LDAPPasswordPolicyError pErr;
PassPolicy pp;
} ppbind;
static void
ctrls_cleanup( Operation *op, SlapReply *rs, LDAPControl **oldctrls )
{
int n;
assert( rs->sr_ctrls != NULL );
assert( rs->sr_ctrls[0] != NULL );
for ( n = 0; rs->sr_ctrls[n]; n++ ) {
if ( rs->sr_ctrls[n]->ldctl_oid == LDAP_CONTROL_PASSWORDPOLICYRESPONSE ) {
ch_free( rs->sr_ctrls[n]->ldctl_value.bv_val );
ch_free( rs->sr_ctrls[n] );
rs->sr_ctrls[n] = (LDAPControl *)(-1);
break;
}
}
if ( rs->sr_ctrls[n] == NULL ) {
/* missed? */
}
op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
rs->sr_ctrls = oldctrls;
}
static int
ppolicy_bind_resp( Operation *op, SlapReply *rs )
ppolicy_ctrls_cleanup( Operation *op, SlapReply *rs )
{
ppbind *ppb = op->o_callback->sc_private;
if ( ppb->send_ctrl ) {
ctrls_cleanup( op, rs, ppb->oldctrls );
}
return SLAP_CB_CONTINUE;
}
static int
ppolicy_bind_response( Operation *op, SlapReply *rs )
{
ppbind *ppb = op->o_callback->sc_private;
slap_overinst *on = ppb->on;
@ -1042,17 +1140,16 @@ locked:
}
if ( ppb->send_ctrl ) {
LDAPControl **ctrls = NULL;
LDAPControl *ctrl = NULL;
pp_info *pi = on->on_bi.bi_private;
/* Do we really want to tell that the account is locked? */
if ( ppb->pErr == PP_accountLocked && !pi->use_lockout ) {
ppb->pErr = PP_noError;
}
ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
ctrls[0] = create_passcontrol( warn, ngut, ppb->pErr );
ctrls[1] = NULL;
rs->sr_ctrls = ctrls;
ctrl = create_passcontrol( warn, ngut, ppb->pErr );
ppb->oldctrls = add_passcontrol( op, rs, ctrl );
op->o_callback->sc_cleanup = ppolicy_ctrls_cleanup;
}
op->o_bd->bd_info = bi;
return SLAP_CB_CONTINUE;
@ -1091,7 +1188,7 @@ ppolicy_bind( Operation *op, SlapReply *rs )
/* Setup a callback so we can munge the result */
cb->sc_response = ppolicy_bind_resp;
cb->sc_response = ppolicy_bind_response;
cb->sc_next = op->o_callback->sc_next;
cb->sc_private = ppb;
op->o_callback->sc_next = cb;
@ -1147,6 +1244,7 @@ ppolicy_restrict(
}
if ( op->o_conn && !BER_BVISEMPTY( &pwcons[op->o_conn->c_conn_idx].dn )) {
LDAPControl **oldctrls;
/* if the current authcDN doesn't match the one we recorded,
* then an intervening Bind has succeeded and the restriction
* no longer applies. (ITS#4516)
@ -1161,16 +1259,16 @@ ppolicy_restrict(
Debug( LDAP_DEBUG_TRACE,
"connection restricted to password changing only\n", 0, 0, 0);
if ( send_ctrl ) {
LDAPControl **ctrls = NULL;
ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
ctrls[0] = create_passcontrol( -1, -1, PP_changeAfterReset );
ctrls[1] = NULL;
rs->sr_ctrls = ctrls;
LDAPControl *ctrl = NULL;
ctrl = create_passcontrol( -1, -1, PP_changeAfterReset );
oldctrls = add_passcontrol( op, rs, ctrl );
}
op->o_bd->bd_info = (BackendInfo *)on->on_info;
send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS,
"Operations are restricted to bind/unbind/abandon/StartTLS/modify password" );
if ( send_ctrl ) {
ctrls_cleanup( op, rs, oldctrls );
}
return rs->sr_err;
}
@ -1224,16 +1322,17 @@ ppolicy_add(
}
rc = check_password_quality( bv, &pp, &pErr, op->ora_e );
if (rc != LDAP_SUCCESS) {
LDAPControl **oldctrls = NULL;
op->o_bd->bd_info = (BackendInfo *)on->on_info;
if ( send_ctrl ) {
LDAPControl **ctrls = NULL;
ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
ctrls[0] = create_passcontrol( -1, -1, pErr );
ctrls[1] = NULL;
rs->sr_ctrls = ctrls;
LDAPControl *ctrl = NULL;
ctrl = create_passcontrol( -1, -1, pErr );
oldctrls = add_passcontrol( op, rs, ctrl );
}
send_ldap_error( op, rs, rc, "Password fails quality checking policy" );
if ( send_ctrl ) {
ctrls_cleanup( op, rs, oldctrls );
}
return rs->sr_err;
}
}
@ -1316,6 +1415,7 @@ ppolicy_modify( Operation *op, SlapReply *rs )
struct berval newpw = BER_BVNULL, oldpw = BER_BVNULL,
*bv, cr[2];
LDAPPasswordPolicyError pErr = PP_noError;
LDAPControl **oldctrls = NULL;
op->o_bd->bd_info = (BackendInfo *)on->on_info;
rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
@ -1335,7 +1435,7 @@ ppolicy_modify( Operation *op, SlapReply *rs )
a_lock = attr_find( e->e_attrs, ad_pwdAccountLockedTime );
a_fail = attr_find( e->e_attrs, ad_pwdFailureTime );
for( prev = &op->oq_modify.rs_modlist, ml = *prev; ml; ml = *prev ) {
for( prev = &op->orm_modlist, ml = *prev; ml; ml = *prev ) {
if ( ml->sml_desc == slap_schema.si_ad_userPassword )
got_pw = 1;
@ -1439,7 +1539,7 @@ ppolicy_modify( Operation *op, SlapReply *rs )
ppolicy_get( op, e, &pp );
for ( ml = op->oq_modify.rs_modlist,
for ( ml = op->orm_modlist,
pwmod = 0, mod_pw_only = 1,
deladd = 0, delmod = NULL,
addmod = NULL,
@ -1487,7 +1587,7 @@ ppolicy_modify( Operation *op, SlapReply *rs )
}
}
} else if (! is_at_operational( ml->sml_desc->ad_type )) {
} else if ( !is_at_operational( ml->sml_desc->ad_type ) ) {
mod_pw_only = 0;
/* modifying something other than password */
}
@ -1578,16 +1678,14 @@ ppolicy_modify( Operation *op, SlapReply *rs )
* let the matching value get found later
*/
if (pp.pwdSafeModify && oldpw.bv_val ) {
ml = (Modifications *) ch_malloc( sizeof( Modifications ) );
ml = (Modifications *)ch_calloc( sizeof( Modifications ), 1 );
ml->sml_op = LDAP_MOD_DELETE;
ml->sml_flags = SLAP_MOD_INTERNAL;
ml->sml_desc = pp.ad;
ml->sml_type = pp.ad->ad_cname;
ml->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
ber_dupbv( &ml->sml_values[0], &oldpw );
ml->sml_values[1].bv_len = 0;
ml->sml_values[1].bv_val = NULL;
ml->sml_nvalues = NULL;
BER_BVZERO( &ml->sml_values[1] );
ml->sml_next = op->orm_modlist;
op->orm_modlist = ml;
delmod = ml;
@ -1653,19 +1751,18 @@ ppolicy_modify( Operation *op, SlapReply *rs )
* replace the delete value with the (possibly hashed)
* value which is currently in the password.
*/
for(i=0; delmod->sml_values[i].bv_val; i++) {
free(delmod->sml_values[i].bv_val);
delmod->sml_values[i].bv_len = 0;
for ( i = 0; !BER_BVISNULL( &delmod->sml_values[i] ); i++ ) {
free( delmod->sml_values[i].bv_val );
BER_BVZERO( &delmod->sml_values[i] );
}
free(delmod->sml_values);
free( delmod->sml_values );
delmod->sml_values = ch_calloc( sizeof(struct berval), 2 );
delmod->sml_values[1].bv_len = 0;
delmod->sml_values[1].bv_val = NULL;
ber_dupbv(&(delmod->sml_values[0]), &(pa->a_nvals[0]));
BER_BVZERO( &delmod->sml_values[1] );
ber_dupbv( &(delmod->sml_values[0]), &(pa->a_nvals[0]) );
}
}
bv = newpw.bv_val ? &newpw : addmod->sml_values;
bv = newpw.bv_val ? &newpw : &addmod->sml_values[0];
if (pp.pwdCheckQuality > 0) {
rc = check_password_quality( bv, &pp, &pErr, e );
@ -1746,62 +1843,48 @@ do_modify:
timestamp.bv_len = sizeof(timebuf);
slap_timestamp( &now, &timestamp );
mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
mods->sml_type.bv_val = NULL;
mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
mods->sml_desc = ad_pwdChangedTime;
if (pwmop != LDAP_MOD_DELETE) {
mods->sml_op = LDAP_MOD_REPLACE;
mods->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
mods->sml_nvalues = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
ber_dupbv( &mods->sml_values[0], &timestamp );
ber_dupbv( &mods->sml_nvalues[0], &timestamp );
mods->sml_values[1].bv_len = 0;
mods->sml_values[1].bv_val = NULL;
assert( mods->sml_values[0].bv_val != NULL );
BER_BVZERO( &mods->sml_values[1] );
assert( !BER_BVISNULL( &mods->sml_values[0] ) );
} else {
mods->sml_op = LDAP_MOD_DELETE;
mods->sml_values = NULL;
}
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_nvalues = NULL;
mods->sml_next = NULL;
modtail->sml_next = mods;
modtail = mods;
if (attr_find(e->e_attrs, ad_pwdGraceUseTime )) {
mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
mods->sml_op = LDAP_MOD_DELETE;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_type.bv_val = NULL;
mods->sml_desc = ad_pwdGraceUseTime;
mods->sml_values = NULL;
mods->sml_nvalues = NULL;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_next = NULL;
modtail->sml_next = mods;
modtail = mods;
}
if (attr_find(e->e_attrs, ad_pwdAccountLockedTime )) {
mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
mods->sml_op = LDAP_MOD_DELETE;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_type.bv_val = NULL;
mods->sml_desc = ad_pwdAccountLockedTime;
mods->sml_values = NULL;
mods->sml_nvalues = NULL;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_next = NULL;
modtail->sml_next = mods;
modtail = mods;
}
if (attr_find(e->e_attrs, ad_pwdFailureTime )) {
mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
mods->sml_op = LDAP_MOD_DELETE;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_type.bv_val = NULL;
mods->sml_desc = ad_pwdFailureTime;
mods->sml_values = NULL;
mods->sml_nvalues = NULL;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_next = NULL;
modtail->sml_next = mods;
modtail = mods;
@ -1809,13 +1892,10 @@ do_modify:
/* Delete the pwdReset attribute, since it's being reset */
if ((zapReset) && (attr_find(e->e_attrs, ad_pwdReset ))) {
mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
mods->sml_op = LDAP_MOD_DELETE;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_type.bv_val = NULL;
mods->sml_desc = ad_pwdReset;
mods->sml_values = NULL;
mods->sml_nvalues = NULL;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_next = NULL;
modtail->sml_next = mods;
modtail = mods;
@ -1839,19 +1919,15 @@ do_modify:
* This is easily evaluated, since the linked list is
* created in ascending time order.
*/
mods = (Modifications *) ch_malloc( sizeof( Modifications ) );
mods = (Modifications *) ch_calloc( sizeof( Modifications ), 1 );
mods->sml_op = LDAP_MOD_DELETE;
mods->sml_flags = SLAP_MOD_INTERNAL;
mods->sml_type.bv_val = NULL;
mods->sml_desc = ad_pwdHistory;
mods->sml_nvalues = NULL;
mods->sml_values = ch_calloc( sizeof( struct berval ),
hsize - pp.pwdInHistory + 2 );
mods->sml_values[ hsize - pp.pwdInHistory + 1 ].bv_val = NULL;
mods->sml_values[ hsize - pp.pwdInHistory + 1 ].bv_len = 0;
hsize - pp.pwdInHistory + 2 );
BER_BVZERO( &mods->sml_values[ hsize - pp.pwdInHistory + 1 ] );
for(i=0,p=tl; i < (hsize - pp.pwdInHistory + 1); i++, p=p->next) {
mods->sml_values[i].bv_val = NULL;
mods->sml_values[i].bv_len = 0;
BER_BVZERO( &mods->sml_values[i] );
ber_dupbv( &(mods->sml_values[i]), &p->bv );
}
mods->sml_next = NULL;
@ -1885,6 +1961,7 @@ do_modify:
mods->sml_next = NULL;
modtail->sml_next = mods;
modtail = mods;
} else {
Debug( LDAP_DEBUG_TRACE,
"ppolicy_modify: password attr lookup failed\n", 0, 0, 0 );
@ -1909,7 +1986,8 @@ do_modify:
*/
if ((pi->hash_passwords) && (addmod) && !newpw.bv_val &&
(password_scheme( &(addmod->sml_values[0]), NULL ) != LDAP_SUCCESS)) {
(password_scheme( &(addmod->sml_values[0]), NULL ) != LDAP_SUCCESS))
{
struct berval hpw, bv;
slap_passwd_hash( &(addmod->sml_values[0]), &hpw, &txt );
@ -1921,13 +1999,11 @@ do_modify:
rs->sr_text = txt;
goto return_results;
}
bv.bv_val = addmod->sml_values[0].bv_val;
bv.bv_len = addmod->sml_values[0].bv_len;
bv = addmod->sml_values[0];
/* clear and discard the clear password */
memset(bv.bv_val, 0, bv.bv_len);
ber_memfree(bv.bv_val);
addmod->sml_values[0].bv_val = hpw.bv_val;
addmod->sml_values[0].bv_len = hpw.bv_len;
addmod->sml_values[0] = hpw;
}
}
op->o_bd->bd_info = (BackendInfo *)on->on_info;
@ -1939,14 +2015,15 @@ return_results:
op->o_bd->bd_info = (BackendInfo *)on->on_info;
be_entry_release_r( op, e );
if ( send_ctrl ) {
LDAPControl **ctrls = NULL;
LDAPControl *ctrl = NULL;
ctrls = ch_calloc( sizeof( LDAPControl *) , 2 );
ctrls[0] = create_passcontrol( -1, -1, pErr );
ctrls[1] = NULL;
rs->sr_ctrls = ctrls;
ctrl = create_passcontrol( -1, -1, pErr );
oldctrls = add_passcontrol( op, rs, ctrl );
}
send_ldap_result( op, rs );
if ( send_ctrl ) {
ctrls_cleanup( op, rs, oldctrls );
}
return rs->sr_err;
}

View File

@ -282,8 +282,13 @@ old_good:
* 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;