]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/overlays/ppolicy.c
Fix overlay aux_operational, add contextCSN as operational attribute
[openldap] / servers / slapd / overlays / ppolicy.c
index 514a49f68cd1d72dc782addaa9db4190b4cff7a8..c22b295072bd277ea0f696be2ed2cc20e8e0e8b8 100644 (file)
@@ -35,7 +35,9 @@
 #include <ldap.h>
 #include "lutil.h"
 #include "slap.h"
+#if SLAPD_MODULES
 #include <ltdl.h>
+#endif
 #include <ac/errno.h>
 #include <ac/time.h>
 #include <ac/string.h>
@@ -49,6 +51,7 @@
 typedef struct pp_info {
        struct berval def_policy;       /* DN of default policy subentry */
        int use_lockout;                /* send AccountLocked result? */
+       int hash_passwords;             /* transparently hash cleartext pwds */
 } pp_info;
 
 /* Our per-connection info - note, it is not per-instance, it is 
@@ -59,6 +62,7 @@ typedef struct pw_conn {
 } pw_conn;
 
 static pw_conn *pwcons;
+static int ppolicy_cid;
 
 typedef struct pass_policy {
        AttributeDescription *ad; /* attribute to which the policy applies */
@@ -439,7 +443,7 @@ password_scheme( struct berval *cred, struct berval *sch )
 }
 
 static int
-check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyError *err )
+check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyError *err, Entry *e )
 {
        int rc = LDAP_SUCCESS, ok = LDAP_SUCCESS;
        char *ptr = cred->bv_val;
@@ -485,8 +489,9 @@ check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyE
        }
 
        rc = LDAP_SUCCESS;
-    
+
        if (pp->pwdCheckModule[0]) {
+#if SLAPD_MODULES
                lt_dlhandle mod;
                const char *err;
                
@@ -498,7 +503,7 @@ check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyE
                                pp->pwdCheckModule, err, 0 );
                        ok = LDAP_OTHER; /* internal error */
                } else {
-                       int (*prog)( char *passwd, char **text, void *arg );
+                       int (*prog)( char *passwd, char **text, Attribute *attrs );
 
                        if ((prog = lt_dlsym( mod, "check_password" )) == NULL) {
                                err = lt_dlerror();
@@ -511,7 +516,7 @@ check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyE
                                char *txt = NULL;
 
                                ldap_pvt_thread_mutex_lock( &chk_syntax_mutex );
-                               ok = prog( cred->bv_val, &txt, NULL );
+                               ok = prog( cred->bv_val, &txt, e ? e->e_attrs : NULL );
                                ldap_pvt_thread_mutex_unlock( &chk_syntax_mutex );
                                if (txt) {
                                        Debug(LDAP_DEBUG_ANY,
@@ -524,6 +529,10 @@ check_password_quality( struct berval *cred, PassPolicy *pp, LDAPPasswordPolicyE
                            
                        lt_dlclose( mod );
                }
+#else
+       Debug(LDAP_DEBUG_ANY, "check_password_quality: external modules not "
+               "supported. pwdCheckModule ignored.\n", 0, 0, 0);
+#endif /* SLAPD_MODULES */
        }
                
                    
@@ -710,10 +719,10 @@ ppolicy_bind_resp( Operation *op, SlapReply *rs )
        }
 
        now = slap_get_time(); /* stored for later consideration */
-       ldap_pvt_thread_mutex_lock( &SLAPD_GLOBAL(gmtime_mutex ));
+       ldap_pvt_thread_mutex_lock( &gmtime_mutex );
        tm = gmtime(&now);
        lutil_gentime( nowstr, sizeof(nowstr), tm );
-       ldap_pvt_thread_mutex_unlock( &SLAPD_GLOBAL(gmtime_mutex ));
+       ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 
        if ( rs->sr_err == LDAP_INVALID_CREDENTIALS ) {
                int i = 0, fc = 0;
@@ -992,13 +1001,8 @@ ppolicy_bind( Operation *op, SlapReply *rs )
                op->o_callback->sc_next = cb;
 
                /* Did we receive a password policy request control? */
-               for ( i=0; op->o_ctrls && op->o_ctrls[i]; i++ ) {
-                       if ( !strcmp( op->o_ctrls[i]->ldctl_oid,
-                               LDAP_CONTROL_PASSWORDPOLICYREQUEST ) )
-                       {
-                               ppb->send_ctrl = 1;
-                               break;
-                       }
+               if ( op->o_ctrlflag[ppolicy_cid] ) {
+                       ppb->send_ctrl = 1;
                }
 
                op->o_bd->bd_info = (BackendInfo *)on;
@@ -1039,12 +1043,8 @@ ppolicy_restrict(
        int i, send_ctrl = 0;
 
        /* Did we receive a password policy request control? */
-       for ( i=0; op->o_ctrls && op->o_ctrls[i]; i++ ) {
-               if ( !strcmp( op->o_ctrls[i]->ldctl_oid,
-                       LDAP_CONTROL_PASSWORDPOLICYREQUEST ) ) {
-                       send_ctrl = 1;
-                       break;
-               }
+       if ( op->o_ctrlflag[ppolicy_cid] ) {
+               send_ctrl = 1;
        }
 
        if ( op->o_conn && pwcons[op->o_conn->c_conn_idx].restrict ) {
@@ -1073,9 +1073,11 @@ ppolicy_add(
        SlapReply *rs )
 {
        slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+       pp_info *pi = on->on_bi.bi_private;
        PassPolicy pp;
        int pw;
        Attribute *pa;
+       const char *txt;
 
        if ( ppolicy_restrict( op, rs ) != SLAP_CB_CONTINUE )
                return rs->sr_err;
@@ -1089,21 +1091,17 @@ ppolicy_add(
                 * then we need to check that the password fits in with the
                 * security policy for the new entry.
                 */
-               ppolicy_get( op, op->oq_add.rs_e, &pp );
+               ppolicy_get( op, op->ora_e, &pp );
                if (pp.pwdCheckQuality > 0 && !be_isroot( op )) {
                        struct berval *bv = &(pa->a_vals[0]);
                        int rc, i, send_ctrl = 0; 
                        LDAPPasswordPolicyError pErr = PP_noError;
 
                        /* Did we receive a password policy request control? */
-                       for ( i=0; op->o_ctrls && op->o_ctrls[i]; i++ ) {
-                               if ( !strcmp( op->o_ctrls[i]->ldctl_oid,
-                                       LDAP_CONTROL_PASSWORDPOLICYREQUEST ) ) {
-                                       send_ctrl = 1;
-                                       break;
-                               }
+                       if ( op->o_ctrlflag[ppolicy_cid] ) {
+                               send_ctrl = 1;
                        }
-                       rc = check_password_quality( bv, &pp, &pErr );
+                       rc = check_password_quality( bv, &pp, &pErr, op->ora_e );
                        if (rc != LDAP_SUCCESS) {
                                op->o_bd->bd_info = (BackendInfo *)on->on_info;
                                if ( send_ctrl ) {
@@ -1117,6 +1115,37 @@ ppolicy_add(
                                send_ldap_error( op, rs, rc, "Password fails quality checking policy" );
                                return rs->sr_err;
                        }
+                           /*
+                            * A controversial bit. We hash cleartext
+                            * passwords provided via add and modify operations
+                            * You're not really supposed to do this, since
+                            * the X.500 model says "store attributes" as they
+                            * get provided. By default, this is what we do
+                            *
+                            * But if the hash_passwords flag is set, we hash
+                            * any cleartext password attribute values via the
+                            * default password hashing scheme.
+                            */
+                       if ((pi->hash_passwords) &&
+                               (password_scheme( &(pa->a_vals[0]), NULL ) != LDAP_SUCCESS)) {
+                               struct berval hpw;
+
+                               slap_passwd_hash( &(pa->a_vals[0]), &hpw, &txt );
+                               if (hpw.bv_val == NULL) {
+                                   /*
+                                    * hashing didn't work. Emit an error.
+                                    */
+                                       rs->sr_err = LDAP_OTHER;
+                                       rs->sr_text = txt;
+                                       send_ldap_error( op, rs, LDAP_OTHER, "Password hashing failed" );
+                                       return rs->sr_err;
+                               }
+
+                               memset( pa->a_vals[0].bv_val, 0, pa->a_vals[0].bv_len);
+                               ber_memfree( pa->a_vals[0].bv_val );
+                               pa->a_vals[0].bv_val = hpw.bv_val;
+                               pa->a_vals[0].bv_len = hpw.bv_len;
+                       }
                }
                /* If password aging is in effect, set the pwdChangedTime */
                if (( pp.pwdMaxAge || pp.pwdMinAge ) && !be_isupdate( op )) {
@@ -1125,10 +1154,10 @@ ppolicy_add(
                        struct tm *ltm;
                        time_t now = slap_get_time();
 
-                       ldap_pvt_thread_mutex_lock( &SLAPD_GLOBAL(gmtime_mutex ));
+                       ldap_pvt_thread_mutex_lock( &gmtime_mutex );
                        ltm = gmtime( &now );
                        lutil_gentime( timebuf, sizeof(timebuf), ltm );
-                       ldap_pvt_thread_mutex_unlock( &SLAPD_GLOBAL(gmtime_mutex ));
+                       ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 
                        timestamp.bv_val = timebuf;
                        timestamp.bv_len = strlen(timebuf);
@@ -1143,6 +1172,7 @@ static int
 ppolicy_modify( Operation *op, SlapReply *rs )
 {
        slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
+       pp_info                 *pi = on->on_bi.bi_private;
        int                     i, rc, mod_pw_only, pwmod, pwmop, deladd,
                                hsize = 0;
        PassPolicy              pp;
@@ -1164,12 +1194,8 @@ ppolicy_modify( Operation *op, SlapReply *rs )
        if ( rc != LDAP_SUCCESS ) return SLAP_CB_CONTINUE;
 
        /* Did we receive a password policy request control? */
-       for ( i=0; op->o_ctrls && op->o_ctrls[i]; i++ ) {
-               if ( !strcmp( op->o_ctrls[i]->ldctl_oid,
-                       LDAP_CONTROL_PASSWORDPOLICYREQUEST ) ) {
-                       send_ctrl = 1;
-                       break;
-               }
+       if ( op->o_ctrlflag[ppolicy_cid] ) {
+               send_ctrl = 1;
        }
 
        /* See if this is a pwdModify exop. If so, we can
@@ -1387,7 +1413,7 @@ ppolicy_modify( Operation *op, SlapReply *rs )
        bv = newpw.bv_val ? &newpw : addmod->sml_values;
        if (pp.pwdCheckQuality > 0) {
 
-               rc = check_password_quality( bv, &pp, &pErr );
+               rc = check_password_quality( bv, &pp, &pErr, e );
                if (rc != LDAP_SUCCESS) {
                        rs->sr_err = rc;
                        rs->sr_text = "Password fails quality checking policy";
@@ -1445,10 +1471,10 @@ do_modify:
                 * up to date.
                 */
 
-               ldap_pvt_thread_mutex_lock( &SLAPD_GLOBAL(gmtime_mutex ));
+               ldap_pvt_thread_mutex_lock( &gmtime_mutex );
                ltm = gmtime( &now );
                lutil_gentime( timebuf, sizeof(timebuf), ltm );
-               ldap_pvt_thread_mutex_unlock( &SLAPD_GLOBAL(gmtime_mutex ));
+               ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 
                timestamp.bv_val = timebuf;
                timestamp.bv_len = strlen(timebuf);
@@ -1593,7 +1619,7 @@ do_modify:
                 * leave it alone.
                 */
 
-               if ((addmod) && !newpw.bv_val && 
+               if ((pi->hash_passwords) && (addmod) && !newpw.bv_val && 
                        (password_scheme( &(addmod->sml_values[0]), NULL ) != LDAP_SUCCESS)) {
                        struct berval hpw, bv;
                        
@@ -1649,6 +1675,7 @@ ppolicy_parseCtrl(
                rs->sr_text = "passwordPolicyRequest control invalid criticality";
                return LDAP_PROTOCOL_ERROR;
        }
+       op->o_ctrlflag[ppolicy_cid] = SLAP_CONTROL_NONCRITICAL;
 
        return LDAP_SUCCESS;
 }
@@ -1676,8 +1703,8 @@ ppolicy_db_init(
 
        on->on_bi.bi_private = ch_calloc( sizeof(pp_info), 1 );
 
-       if ( SLAPD_GLOBAL(dtblsize) && !pwcons )
-               pwcons = ch_calloc(sizeof(pw_conn), SLAPD_GLOBAL(dtblsize) );
+       if ( dtblsize && !pwcons )
+               pwcons = ch_calloc(sizeof(pw_conn), dtblsize );
 
        return 0;
 }
@@ -1733,6 +1760,13 @@ ppolicy_config(
                }
                pi->use_lockout = 1;
                return 0;
+       } else if ( strcasecmp( argv[0], "ppolicy_hash_cleartext" ) == 0 ) {
+               if ( argc != 1 ) {
+                       fprintf( stderr, "%s: line %d: ppolicy_hash_cleartext "
+                               "takes no arguments\n", fname, lineno );
+                       return ( 1 );
+               }
+               pi->hash_passwords = 1;
        }
        return SLAP_CONF_UNKNOWN;
 }
@@ -1772,7 +1806,7 @@ int ppolicy_init()
 
        code = register_supported_control( LDAP_CONTROL_PASSWORDPOLICYREQUEST,
                SLAP_CTRL_ADD|SLAP_CTRL_BIND|SLAP_CTRL_MODIFY, extops,
-               ppolicy_parseCtrl );
+               ppolicy_parseCtrl, &ppolicy_cid );
        if ( code != LDAP_SUCCESS ) {
                fprintf( stderr, "Failed to register control %d\n", code );
                return code;