]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/syncrepl.c
Braindead serialization for #6368/test050
[openldap] / servers / slapd / syncrepl.c
index 22496b66b3825f246c2f5f7a5f75bb097aafa2ae..aadf33b79c23035ad12ea9afe05a4bed57e64bf1 100644 (file)
@@ -44,8 +44,14 @@ typedef struct cookie_state {
        int cs_ref;
        struct berval *cs_vals;
        int *cs_sids;
-} cookie_state;
        
+       /* pending changes, not yet committed */
+       ldap_pvt_thread_mutex_t cs_pmutex;
+       int     cs_pnum;
+       struct berval *cs_pvals;
+       int *cs_psids;
+} cookie_state;
+
 #define        SYNCDATA_DEFAULT        0       /* entries are plain LDAP entries */
 #define        SYNCDATA_ACCESSLOG      1       /* entries are accesslog format */
 #define        SYNCDATA_CHANGELOG      2       /* entries are changelog format */
@@ -70,6 +76,7 @@ typedef struct syncinfo_s {
        struct berval           si_logbase;
        struct berval           si_filterstr;
        struct berval           si_logfilterstr;
+       struct berval           si_contextdn;
        int                     si_scope;
        int                     si_attrsonly;
        char                    *si_anfile;
@@ -119,7 +126,7 @@ static int syncrepl_entry(
                                        Modifications**,int, struct berval*,
                                        struct berval *cookieCSN );
 static int syncrepl_updateCookie(
-                                       syncinfo_t *, Operation *, struct berval *,
+                                       syncinfo_t *, Operation *,
                                        struct sync_cookie * );
 static struct berval * slap_uuidstr_from_normalized(
                                        struct berval *, struct berval *, void * );
@@ -458,8 +465,8 @@ check_syncprov(
         */
        a.a_desc = slap_schema.si_ad_contextCSN;
        e.e_attrs = &a;
-       e.e_name = op->o_bd->be_suffix[0];
-       e.e_nname = op->o_bd->be_nsuffix[0];
+       e.e_name = si->si_contextdn;
+       e.e_nname = si->si_contextdn;
        at[0].an_name = a.a_desc->ad_cname;
        at[0].an_desc = a.a_desc;
        BER_BVZERO( &at[1].an_name );
@@ -578,8 +585,9 @@ do_syncrep1(
        {
                ber_len_t ssf; /* ITS#5403, 3864 LDAP_OPT_X_SASL_SSF probably ought
                                                  to use sasl_ssf_t but currently uses ber_len_t */
-               ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &ssf );
-               op->o_sasl_ssf = ssf;
+               if ( ldap_get_option( si->si_ld, LDAP_OPT_X_SASL_SSF, &ssf )
+                       == LDAP_SUCCESS )
+                       op->o_sasl_ssf = ssf;
        }
        op->o_ssf = ( op->o_sasl_ssf > op->o_tls_ssf )
                ?  op->o_sasl_ssf : op->o_tls_ssf;
@@ -627,7 +635,7 @@ do_syncrep1(
                                BerVarray csn = NULL;
                                void *ctx = op->o_tmpmemctx;
 
-                               op->o_req_ndn = op->o_bd->be_nsuffix[0];
+                               op->o_req_ndn = si->si_contextdn;
                                op->o_req_dn = op->o_req_ndn;
 
                                /* try to read stored contextCSN */
@@ -663,6 +671,11 @@ do_syncrep1(
                        si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
                        si->si_syncCookie.sid );
        } else {
+               /* ITS#6367: recreate the cookie so it has our SID, not our peer's */
+               ch_free( si->si_syncCookie.octet_str.bv_val );
+               slap_compose_sync_cookie( NULL, &si->si_syncCookie.octet_str,
+                       si->si_syncCookie.ctxcsn, si->si_syncCookie.rid,
+                       si->si_syncCookie.sid );
                /* Look for contextCSN from syncprov overlay. */
                check_syncprov( op, si );
        }
@@ -753,10 +766,9 @@ do_syncrep2(
                        err = LDAP_SUCCESS;
        ber_len_t       len;
 
-       struct berval   *psub;
        Modifications   *modlist = NULL;
 
-       int                             match, m;
+       int                             match, m, punlock = 0;
 
        struct timeval *tout_p = NULL;
        struct timeval tout = { 0, 0 };
@@ -775,8 +787,6 @@ do_syncrep2(
 
        Debug( LDAP_DEBUG_TRACE, "=>do_syncrep2 %s\n", si->si_ridtxt, 0, 0 );
 
-       psub = &si->si_be->be_nsuffix[0];
-
        slap_dup_sync_cookie( &syncCookie_req, &si->si_syncCookie );
 
        if ( abs(si->si_type) == LDAP_SYNC_REFRESH_AND_PERSIST ) {
@@ -841,8 +851,9 @@ do_syncrep2(
                        if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
                                ber_scanf( ber, /*"{"*/ "m}", &cookie );
 
-                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: cookie=%s\n",
-                                       BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0, 0 );
+                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
+                                       si->si_ridtxt,
+                                       BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
 
                                if ( !BER_BVISNULL( &cookie ) ) {
                                        ch_free( syncCookie.octet_str.bv_val );
@@ -853,16 +864,51 @@ do_syncrep2(
                                        slap_parse_sync_cookie( &syncCookie, NULL );
                                        if ( syncCookie.ctxcsn ) {
                                                int i, sid = slap_parse_csn_sid( syncCookie.ctxcsn );
+                                               check_syncprov( op, si );
                                                for ( i =0; i<si->si_cookieState->cs_num; i++ ) {
-                                                       if ( si->si_cookieState->cs_sids[i] == sid && 
-                                                               ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_vals[i] ) <= 0 ) {
-                                                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN too old, ignoring %s\n",
-                                                                       si->si_ridtxt, syncCookie.ctxcsn->bv_val, 0 );
-                                                               ldap_controls_free( rctrls );
-                                                               rc = 0;
+                                                       if ( si->si_cookieState->cs_sids[i] == sid ) {
+                                                               if ( ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_vals[i] ) <= 0 ) {
+                                                                       Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN too old, ignoring %s\n",
+                                                                               si->si_ridtxt, syncCookie.ctxcsn->bv_val, 0 );
+                                                                       ldap_controls_free( rctrls );
+                                                                       rc = 0;
+                                                                       goto done;
+                                                               }
+                                                               break;
+                                                       }
+                                               }
+                                               /* check pending CSNs too */
+                                               while ( ldap_pvt_thread_mutex_trylock( &si->si_cookieState->cs_pmutex )) {
+                                                       if ( slapd_shutdown ) {
+                                                               rc = -2;
                                                                goto done;
                                                        }
+                                                       if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
+                                                               ldap_pvt_thread_yield();
                                                }
+                                               for ( i =0; i<si->si_cookieState->cs_pnum; i++ ) {
+                                                       if ( si->si_cookieState->cs_psids[i] == sid ) {
+                                                               if ( ber_bvcmp( syncCookie.ctxcsn, &si->si_cookieState->cs_pvals[i] ) <= 0 ) {
+                                                                       Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s CSN too old, ignoring %s\n",
+                                                                               si->si_ridtxt, syncCookie.ctxcsn->bv_val, 0 );
+                                                                       ldap_controls_free( rctrls );
+                                                                       rc = 0;
+                                                                       ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_pmutex );
+                                                                       goto done;
+                                                               }
+                                                               ber_bvreplace( &si->si_cookieState->cs_pvals[i],
+                                                                       syncCookie.ctxcsn );
+                                                               break;
+                                                       }
+                                               }
+                                               /* new SID, add it */
+                                               if ( i == si->si_cookieState->cs_pnum ) {
+                                                       value_add( &si->si_cookieState->cs_pvals, syncCookie.ctxcsn );
+                                                       si->si_cookieState->cs_pnum++;
+                                                       si->si_cookieState->cs_psids = ch_realloc( si->si_cookieState->cs_psids, si->si_cookieState->cs_pnum * sizeof(int));
+                                                       si->si_cookieState->cs_psids[i] = sid;
+                                               }
+                                               punlock = 1;
                                        }
                                        op->o_controls[slap_cids.sc_LDAPsync] = &syncCookie;
                                }
@@ -873,7 +919,7 @@ do_syncrep2(
                                if ( ( rc = syncrepl_message_to_op( si, op, msg ) ) == LDAP_SUCCESS &&
                                        syncCookie.ctxcsn )
                                {
-                                       rc = syncrepl_updateCookie( si, op, psub, &syncCookie );
+                                       rc = syncrepl_updateCookie( si, op, &syncCookie );
                                } else switch ( rc ) {
                                        case LDAP_ALREADY_EXISTS:
                                        case LDAP_NO_SUCH_OBJECT:
@@ -893,9 +939,11 @@ do_syncrep2(
                                        syncstate, &syncUUID, syncCookie.ctxcsn ) ) == LDAP_SUCCESS &&
                                        syncCookie.ctxcsn )
                                {
-                                       rc = syncrepl_updateCookie( si, op, psub, &syncCookie );
+                                       rc = syncrepl_updateCookie( si, op, &syncCookie );
                                }
                        }
+                       if ( punlock );
+                               ldap_pvt_thread_mutex_unlock( &si->si_cookieState->cs_pmutex );
                        ldap_controls_free( rctrls );
                        if ( modlist ) {
                                slap_mods_free( modlist, 1 );
@@ -961,8 +1009,9 @@ do_syncrep2(
                                if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SYNC_COOKIE ) {
                                        ber_scanf( ber, "m", &cookie );
 
-                                       Debug( LDAP_DEBUG_SYNC, "do_syncrep2: cookie=%s\n",
-                                               BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0, 0 );
+                                       Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
+                                               si->si_ridtxt, 
+                                               BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
 
                                        if ( !BER_BVISNULL( &cookie ) ) {
                                                ch_free( syncCookie.octet_str.bv_val );
@@ -1013,7 +1062,7 @@ do_syncrep2(
                        }
                        if ( syncCookie.ctxcsn && match < 0 && err == LDAP_SUCCESS )
                        {
-                               rc = syncrepl_updateCookie( si, op, psub, &syncCookie );
+                               rc = syncrepl_updateCookie( si, op, &syncCookie );
                        }
                        if ( err == LDAP_SUCCESS
                                && si->si_logstate == SYNCLOG_FALLBACK ) {
@@ -1071,8 +1120,9 @@ do_syncrep2(
                                        {
                                                ber_scanf( ber, "m", &cookie );
 
-                                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: cookie=%s\n",
-                                                       BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0, 0 );
+                                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
+                                                       si->si_ridtxt, 
+                                                       BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
 
                                                if ( !BER_BVISNULL( &cookie ) ) {
                                                        ch_free( syncCookie.octet_str.bv_val );
@@ -1107,8 +1157,9 @@ do_syncrep2(
                                        {
                                                ber_scanf( ber, "m", &cookie );
 
-                                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: cookie=%s\n",
-                                                       BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0, 0 );
+                                               Debug( LDAP_DEBUG_SYNC, "do_syncrep2: %s cookie=%s\n",
+                                                       si->si_ridtxt,
+                                                       BER_BVISNULL( &cookie ) ? "" : cookie.bv_val, 0 );
 
                                                if ( !BER_BVISNULL( &cookie ) ) {
                                                        ch_free( syncCookie.octet_str.bv_val );
@@ -1174,7 +1225,7 @@ do_syncrep2(
 
                                        if ( syncCookie.ctxcsn )
                                        {
-                                               rc = syncrepl_updateCookie( si, op, psub, &syncCookie);
+                                               rc = syncrepl_updateCookie( si, op, &syncCookie);
                                        }
                                } 
 
@@ -1324,12 +1375,18 @@ do_syncrepl(
                if ( SLAP_GLUE_SUBORDINATE( be ) && !overlay_is_inst( be, "syncprov" )) {
                        BackendDB * top_be = select_backend( &be->be_nsuffix[0], 1 );
                        if ( overlay_is_inst( top_be, "syncprov" ))
-                               si->si_wbe = select_backend( &be->be_nsuffix[0], 1 );
+                               si->si_wbe = top_be;
                        else
                                si->si_wbe = be;
                } else {
                        si->si_wbe = be;
                }
+               if ( SLAP_SYNC_SUBENTRY( si->si_wbe )) {
+                       build_new_dn( &si->si_contextdn, &si->si_wbe->be_nsuffix[0],
+                               (struct berval *)&slap_ldapsync_cn_bv, NULL );
+               } else {
+                       si->si_contextdn = si->si_wbe->be_nsuffix[0];
+               }
        }
        if ( !si->si_schemachecking )
                op->o_no_schema_check = 1;
@@ -2957,7 +3014,6 @@ static int
 syncrepl_updateCookie(
        syncinfo_t *si,
        Operation *op,
-       struct berval *pdn,
        struct sync_cookie *syncCookie )
 {
        Backend *be = op->o_bd;
@@ -3048,8 +3104,8 @@ syncrepl_updateCookie(
        cb.sc_private = si;
 
        op->o_callback = &cb;
-       op->o_req_dn = op->o_bd->be_suffix[0];
-       op->o_req_ndn = op->o_bd->be_nsuffix[0];
+       op->o_req_dn = si->si_contextdn;
+       op->o_req_ndn = si->si_contextdn;
 
        /* update contextCSN */
        op->o_dont_replicate = 1;
@@ -3057,6 +3113,20 @@ syncrepl_updateCookie(
        op->orm_modlist = &mod;
        op->orm_no_opattrs = 1;
        rc = op->o_bd->be_modify( op, &rs_modify );
+
+       if ( rs_modify.sr_err == LDAP_NO_SUCH_OBJECT &&
+               SLAP_SYNC_SUBENTRY( op->o_bd )) {
+               const char      *text;
+               char txtbuf[SLAP_TEXT_BUFLEN];
+               size_t textlen = sizeof txtbuf;
+               Entry *e = slap_create_context_csn_entry( op->o_bd, NULL );
+               rc = slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
+               op->ora_e = e;
+               rc = op->o_bd->be_add( op, &rs_modify );
+               if ( e == op->ora_e )
+                       be_entry_release_w( op, op->ora_e );
+       }
+
        op->orm_no_opattrs = 0;
        op->o_dont_replicate = 0;
 
@@ -3695,6 +3765,9 @@ syncinfo_free( syncinfo_t *sie, int free_all )
                if ( sie->si_logbase.bv_val ) {
                        ch_free( sie->si_logbase.bv_val );
                }
+               if ( sie->si_be && SLAP_SYNC_SUBENTRY( sie->si_be )) {
+                       ch_free( sie->si_contextdn.bv_val );
+               }
                if ( sie->si_attrs ) {
                        int i = 0;
                        while ( sie->si_attrs[i] != NULL ) {
@@ -3764,6 +3837,9 @@ syncinfo_free( syncinfo_t *sie, int free_all )
                                ch_free( sie->si_cookieState->cs_sids );
                                ber_bvarray_free( sie->si_cookieState->cs_vals );
                                ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_mutex );
+                               ch_free( sie->si_cookieState->cs_psids );
+                               ber_bvarray_free( sie->si_cookieState->cs_pvals );
+                               ldap_pvt_thread_mutex_destroy( &sie->si_cookieState->cs_pmutex );
                                ch_free( sie->si_cookieState );
                        }
                }
@@ -3904,6 +3980,12 @@ parse_syncrepl_retry(
                        }
                }
        }
+       if ( j < 1 || si->si_retrynum_init[j-1] != RETRYNUM_FOREVER ) {
+               Debug( LDAP_DEBUG_CONFIG,
+                       "%s: syncrepl will eventually stop retrying; the \"retry\" parameter should end with a '+'.\n",
+                       c->log, 0, 0 );
+       }
+
        si->si_retrynum_init[j] = RETRYNUM_TAIL;
        si->si_retrynum[j] = RETRYNUM_TAIL;
        si->si_retryinterval[j] = 0;
@@ -4437,6 +4519,7 @@ add_syncrepl(
                } else {
                        si->si_cookieState = ch_calloc( 1, sizeof( cookie_state ));
                        ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_mutex );
+                       ldap_pvt_thread_mutex_init( &si->si_cookieState->cs_pmutex );
 
                        c->be->be_syncinfo = si;
                }