summaryrefslogtreecommitdiffstats
path: root/servers/slapd/overlays/syncprov.c
diff options
context:
space:
mode:
Diffstat (limited to 'servers/slapd/overlays/syncprov.c')
-rw-r--r--servers/slapd/overlays/syncprov.c3717
1 files changed, 3717 insertions, 0 deletions
diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
new file mode 100644
index 0000000..60d196e
--- /dev/null
+++ b/servers/slapd/overlays/syncprov.c
@@ -0,0 +1,3717 @@
+/* $OpenLDAP$ */
+/* syncprov.c - syncrepl provider */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2021 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Howard Chu for inclusion in
+ * OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_SYNCPROV
+
+#include <ac/string.h>
+#include "lutil.h"
+#include "slap.h"
+#include "config.h"
+#include "ldap_rq.h"
+
+#ifdef LDAP_DEVEL
+#define CHECK_CSN 1
+#endif
+
+/* A modify request on a particular entry */
+typedef struct modinst {
+ struct modinst *mi_next;
+ Operation *mi_op;
+} modinst;
+
+typedef struct modtarget {
+ struct modinst *mt_mods;
+ struct modinst *mt_tail;
+ struct berval mt_dn;
+ ldap_pvt_thread_mutex_t mt_mutex;
+} modtarget;
+
+/* All the info of a psearch result that's shared between
+ * multiple queues
+ */
+typedef struct resinfo {
+ struct syncres *ri_list;
+ Entry *ri_e;
+ struct berval ri_dn;
+ struct berval ri_ndn;
+ struct berval ri_uuid;
+ struct berval ri_csn;
+ struct berval ri_cookie;
+ char ri_isref;
+ ldap_pvt_thread_mutex_t ri_mutex;
+} resinfo;
+
+/* A queued result of a persistent search */
+typedef struct syncres {
+ struct syncres *s_next; /* list of results on this psearch queue */
+ struct syncres *s_rilist; /* list of psearches using this result */
+ resinfo *s_info;
+ char s_mode;
+} syncres;
+
+/* Record of a persistent search */
+typedef struct syncops {
+ struct syncops *s_next;
+ struct syncprov_info_t *s_si;
+ struct berval s_base; /* ndn of search base */
+ ID s_eid; /* entryID of search base */
+ Operation *s_op; /* search op */
+ int s_rid;
+ int s_sid;
+ struct berval s_filterstr;
+ int s_flags; /* search status */
+#define PS_IS_REFRESHING 0x01
+#define PS_IS_DETACHED 0x02
+#define PS_WROTE_BASE 0x04
+#define PS_FIND_BASE 0x08
+#define PS_FIX_FILTER 0x10
+#define PS_TASK_QUEUED 0x20
+
+ int s_inuse; /* reference count */
+ struct syncres *s_res;
+ struct syncres *s_restail;
+ ldap_pvt_thread_mutex_t s_mutex;
+} syncops;
+
+/* A received sync control */
+typedef struct sync_control {
+ struct sync_cookie sr_state;
+ int sr_rhint;
+} sync_control;
+
+#if 0 /* moved back to slap.h */
+#define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
+#endif
+/* o_sync_mode uses data bits of o_sync */
+#define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
+
+#define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
+#define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
+#define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
+#define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
+
+/* Record of which searches matched at premodify step */
+typedef struct syncmatches {
+ struct syncmatches *sm_next;
+ syncops *sm_op;
+} syncmatches;
+
+/* Session log data */
+typedef struct slog_entry {
+ struct berval se_uuid;
+ struct berval se_csn;
+ int se_sid;
+ ber_tag_t se_tag;
+} slog_entry;
+
+typedef struct sessionlog {
+ BerVarray sl_mincsn;
+ int *sl_sids;
+ int sl_numcsns;
+ int sl_num;
+ int sl_size;
+ int sl_playing;
+ Avlnode *sl_entries;
+ ldap_pvt_thread_rdwr_t sl_mutex;
+} sessionlog;
+
+/* The main state for this overlay */
+typedef struct syncprov_info_t {
+ syncops *si_ops;
+ struct berval si_contextdn;
+ BerVarray si_ctxcsn; /* ldapsync context */
+ int *si_sids;
+ int si_numcsns;
+ int si_chkops; /* checkpointing info */
+ int si_chktime;
+ int si_numops; /* number of ops since last checkpoint */
+ int si_nopres; /* Skip present phase */
+ int si_usehint; /* use reload hint */
+ int si_active; /* True if there are active mods */
+ int si_dirty; /* True if the context is dirty, i.e changes
+ * have been made without updating the csn. */
+ time_t si_chklast; /* time of last checkpoint */
+ Avlnode *si_mods; /* entries being modified */
+ sessionlog *si_logs;
+ ldap_pvt_thread_rdwr_t si_csn_rwlock;
+ ldap_pvt_thread_mutex_t si_ops_mutex;
+ ldap_pvt_thread_mutex_t si_mods_mutex;
+ ldap_pvt_thread_mutex_t si_resp_mutex;
+} syncprov_info_t;
+
+typedef struct opcookie {
+ slap_overinst *son;
+ syncmatches *smatches;
+ modtarget *smt;
+ Entry *se;
+ struct berval sdn; /* DN of entry, for deletes */
+ struct berval sndn;
+ struct berval suuid; /* UUID of entry */
+ struct berval sctxcsn;
+ short osid; /* sid of op csn */
+ short rsid; /* sid of relay */
+ short sreference; /* Is the entry a reference? */
+ syncres ssres;
+} opcookie;
+
+typedef struct fbase_cookie {
+ struct berval *fdn; /* DN of a modified entry, for scope testing */
+ syncops *fss; /* persistent search we're testing against */
+ int fbase; /* if TRUE we found the search base and it's still valid */
+ int fscope; /* if TRUE then fdn is within the psearch scope */
+} fbase_cookie;
+
+static AttributeName csn_anlist[3];
+static AttributeName uuid_anlist[2];
+
+/* Build a LDAPsync intermediate state control */
+static int
+syncprov_state_ctrl(
+ Operation *op,
+ SlapReply *rs,
+ Entry *e,
+ int entry_sync_state,
+ LDAPControl **ctrls,
+ int num_ctrls,
+ int send_cookie,
+ struct berval *cookie )
+{
+ Attribute* a;
+ int ret;
+
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ LDAPControl *cp;
+ struct berval bv;
+ struct berval entryuuid_bv = BER_BVNULL;
+
+ ber_init2( ber, 0, LBER_USE_DER );
+ ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+ for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
+ AttributeDescription *desc = a->a_desc;
+ if ( desc == slap_schema.si_ad_entryUUID ) {
+ entryuuid_bv = a->a_nvals[0];
+ break;
+ }
+ }
+
+ /* FIXME: what if entryuuid is NULL or empty ? */
+
+ if ( send_cookie && cookie ) {
+ ber_printf( ber, "{eOON}",
+ entry_sync_state, &entryuuid_bv, cookie );
+ } else {
+ ber_printf( ber, "{eON}",
+ entry_sync_state, &entryuuid_bv );
+ }
+
+ ret = ber_flatten2( ber, &bv, 0 );
+ if ( ret == 0 ) {
+ cp = op->o_tmpalloc( sizeof( LDAPControl ) + bv.bv_len, op->o_tmpmemctx );
+ cp->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
+ cp->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
+ cp->ldctl_value.bv_val = (char *)&cp[1];
+ cp->ldctl_value.bv_len = bv.bv_len;
+ AC_MEMCPY( cp->ldctl_value.bv_val, bv.bv_val, bv.bv_len );
+ ctrls[num_ctrls] = cp;
+ }
+ ber_free_buf( ber );
+
+ if ( ret < 0 ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "slap_build_sync_ctrl: ber_flatten2 failed (%d)\n",
+ ret, 0, 0 );
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ return LDAP_OTHER;
+ }
+
+ return LDAP_SUCCESS;
+}
+
+/* Build a LDAPsync final state control */
+static int
+syncprov_done_ctrl(
+ Operation *op,
+ SlapReply *rs,
+ LDAPControl **ctrls,
+ int num_ctrls,
+ int send_cookie,
+ struct berval *cookie,
+ int refreshDeletes )
+{
+ int ret;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ LDAPControl *cp;
+ struct berval bv;
+
+ ber_init2( ber, NULL, LBER_USE_DER );
+ ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+ ber_printf( ber, "{" );
+ if ( send_cookie && cookie ) {
+ ber_printf( ber, "O", cookie );
+ }
+ if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
+ ber_printf( ber, "b", refreshDeletes );
+ }
+ ber_printf( ber, "N}" );
+
+ ret = ber_flatten2( ber, &bv, 0 );
+ if ( ret == 0 ) {
+ cp = op->o_tmpalloc( sizeof( LDAPControl ) + bv.bv_len, op->o_tmpmemctx );
+ cp->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
+ cp->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
+ cp->ldctl_value.bv_val = (char *)&cp[1];
+ cp->ldctl_value.bv_len = bv.bv_len;
+ AC_MEMCPY( cp->ldctl_value.bv_val, bv.bv_val, bv.bv_len );
+ ctrls[num_ctrls] = cp;
+ }
+
+ ber_free_buf( ber );
+
+ if ( ret < 0 ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "syncprov_done_ctrl: ber_flatten2 failed (%d)\n",
+ ret, 0, 0 );
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ return LDAP_OTHER;
+ }
+
+ return LDAP_SUCCESS;
+}
+
+static int
+syncprov_sendinfo(
+ Operation *op,
+ SlapReply *rs,
+ int type,
+ struct berval *cookie,
+ int refreshDone,
+ BerVarray syncUUIDs,
+ int refreshDeletes )
+{
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ struct berval rspdata;
+
+ int ret;
+
+ ber_init2( ber, NULL, LBER_USE_DER );
+ ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+ if ( type ) {
+ switch ( type ) {
+ case LDAP_TAG_SYNC_NEW_COOKIE:
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendinfo: "
+ "sending a new cookie=%s\n",
+ op->o_log_prefix, cookie->bv_val, 0 );
+ ber_printf( ber, "tO", type, cookie );
+ break;
+ case LDAP_TAG_SYNC_REFRESH_DELETE:
+ case LDAP_TAG_SYNC_REFRESH_PRESENT:
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendinfo: "
+ "%s cookie=%s\n",
+ op->o_log_prefix,
+ type == LDAP_TAG_SYNC_REFRESH_DELETE ? "refreshDelete" : "refreshPresent",
+ cookie ? cookie->bv_val : "" );
+ ber_printf( ber, "t{", type );
+ if ( cookie ) {
+ ber_printf( ber, "O", cookie );
+ }
+ if ( refreshDone == 0 ) {
+ ber_printf( ber, "b", refreshDone );
+ }
+ ber_printf( ber, "N}" );
+ break;
+ case LDAP_TAG_SYNC_ID_SET:
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendinfo: "
+ "%s syncIdSet cookie=%s\n",
+ op->o_log_prefix, refreshDeletes ? "delete" : "present",
+ cookie ? cookie->bv_val : "" );
+ ber_printf( ber, "t{", type );
+ if ( cookie ) {
+ ber_printf( ber, "O", cookie );
+ }
+ if ( refreshDeletes == 1 ) {
+ ber_printf( ber, "b", refreshDeletes );
+ }
+ ber_printf( ber, "[W]", syncUUIDs );
+ ber_printf( ber, "N}" );
+ break;
+ default:
+ Debug( LDAP_DEBUG_TRACE,
+ "%s syncprov_sendinfo: invalid syncinfo type (%d)\n",
+ op->o_log_prefix, type, 0 );
+ return LDAP_OTHER;
+ }
+ }
+
+ ret = ber_flatten2( ber, &rspdata, 0 );
+
+ if ( ret < 0 ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "syncprov_sendinfo: ber_flatten2 failed (%d)\n",
+ ret, 0, 0 );
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ return LDAP_OTHER;
+ }
+
+ rs->sr_rspoid = LDAP_SYNC_INFO;
+ rs->sr_rspdata = &rspdata;
+ send_ldap_intermediate( op, rs );
+ rs->sr_rspdata = NULL;
+ ber_free_buf( ber );
+
+ return LDAP_SUCCESS;
+}
+
+/* Find a modtarget in an AVL tree */
+static int
+sp_avl_cmp( const void *c1, const void *c2 )
+{
+ const modtarget *m1, *m2;
+ int rc;
+
+ m1 = c1; m2 = c2;
+ rc = m1->mt_dn.bv_len - m2->mt_dn.bv_len;
+
+ if ( rc ) return rc;
+ return ber_bvcmp( &m1->mt_dn, &m2->mt_dn );
+}
+
+static int
+syncprov_sessionlog_cmp( const void *l, const void *r )
+{
+ const slog_entry *left = l, *right = r;
+ int ret = ber_bvcmp( &left->se_csn, &right->se_csn );
+ if ( !ret )
+ ret = ber_bvcmp( &left->se_uuid, &right->se_uuid );
+ /* Only time we have two modifications with same CSN is when we detect a
+ * rename during replication.
+ * We invert the test here because LDAP_REQ_MODDN is
+ * numerically greater than LDAP_REQ_MODIFY but we
+ * want it to occur first.
+ */
+ if ( !ret )
+ ret = right->se_tag - left->se_tag;
+
+ return ret;
+}
+
+/* syncprov_findbase:
+ * finds the true DN of the base of a search (with alias dereferencing) and
+ * checks to make sure the base entry doesn't get replaced with a different
+ * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
+ * change is detected, any persistent search on this base must be terminated /
+ * reloaded.
+ * On the first call, we just save the DN and entryID. On subsequent calls
+ * we compare the DN and entryID with the saved values.
+ */
+static int
+findbase_cb( Operation *op, SlapReply *rs )
+{
+ slap_callback *sc = op->o_callback;
+
+ if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
+ fbase_cookie *fc = sc->sc_private;
+
+ /* If no entryID, we're looking for the first time.
+ * Just store whatever we got.
+ */
+ if ( fc->fss->s_eid == NOID ) {
+ fc->fbase = 2;
+ fc->fss->s_eid = rs->sr_entry->e_id;
+ ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
+
+ } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
+ dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
+
+ /* OK, the DN is the same and the entryID is the same. */
+ fc->fbase = 1;
+ }
+ }
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
+ }
+ return LDAP_SUCCESS;
+}
+
+static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
+static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
+
+static int
+syncprov_findbase( Operation *op, fbase_cookie *fc )
+{
+ /* Use basic parameters from syncrepl search, but use
+ * current op's threadctx / tmpmemctx
+ */
+ ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
+ if ( fc->fss->s_flags & PS_FIND_BASE ) {
+ slap_callback cb = {0};
+ Operation fop;
+ SlapReply frs = { REP_RESULT };
+ int rc;
+
+ fc->fss->s_flags ^= PS_FIND_BASE;
+ ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
+
+ fop = *fc->fss->s_op;
+
+ fop.o_bd = fop.o_bd->bd_self;
+ fop.o_hdr = op->o_hdr;
+ fop.o_time = op->o_time;
+ fop.o_tincr = op->o_tincr;
+ fop.o_extra = op->o_extra;
+
+ cb.sc_response = findbase_cb;
+ cb.sc_private = fc;
+
+ fop.o_sync_mode = 0; /* turn off sync mode */
+ fop.o_managedsait = SLAP_CONTROL_CRITICAL;
+ fop.o_callback = &cb;
+ fop.o_tag = LDAP_REQ_SEARCH;
+ fop.ors_scope = LDAP_SCOPE_BASE;
+ fop.ors_limit = NULL;
+ fop.ors_slimit = 1;
+ fop.ors_tlimit = SLAP_NO_LIMIT;
+ fop.ors_attrs = slap_anlist_no_attrs;
+ fop.ors_attrsonly = 1;
+ fop.ors_filter = &generic_filter;
+ fop.ors_filterstr = generic_filterstr;
+
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_findbase: searching\n", op->o_log_prefix, 0, 0 );
+ rc = fop.o_bd->be_search( &fop, &frs );
+ } else {
+ ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
+ fc->fbase = 1;
+ }
+
+ /* After the first call, see if the fdn resides in the scope */
+ if ( fc->fbase == 1 ) {
+ switch ( fc->fss->s_op->ors_scope ) {
+ case LDAP_SCOPE_BASE:
+ fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
+ break;
+ case LDAP_SCOPE_ONELEVEL: {
+ struct berval pdn;
+ dnParent( fc->fdn, &pdn );
+ fc->fscope = dn_match( &pdn, &fc->fss->s_base );
+ break; }
+ case LDAP_SCOPE_SUBTREE:
+ fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
+ break;
+ case LDAP_SCOPE_SUBORDINATE:
+ fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
+ !dn_match( fc->fdn, &fc->fss->s_base );
+ break;
+ }
+ }
+
+ if ( fc->fbase )
+ return LDAP_SUCCESS;
+
+ /* If entryID has changed, then the base of this search has
+ * changed. Invalidate the psearch.
+ */
+ return LDAP_NO_SUCH_OBJECT;
+}
+
+/* syncprov_findcsn:
+ * This function has three different purposes, but they all use a search
+ * that filters on entryCSN so they're combined here.
+ * 1: at startup time, after a contextCSN has been read from the database,
+ * we search for all entries with CSN >= contextCSN in case the contextCSN
+ * was not checkpointed at the previous shutdown.
+ *
+ * 2: when the current contextCSN is known and we have a sync cookie, we search
+ * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
+ * If an entry is found, the cookie CSN is valid, otherwise it is stale.
+ *
+ * 3: during a refresh phase, we search for all entries with CSN <= the cookie
+ * CSN, and generate Present records for them. We always collect this result
+ * in SyncID sets, even if there's only one match.
+ */
+typedef enum find_csn_t {
+ FIND_MAXCSN = 1,
+ FIND_CSN = 2,
+ FIND_PRESENT = 3
+} find_csn_t;
+
+static int
+findmax_cb( Operation *op, SlapReply *rs )
+{
+ if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
+ struct berval *maxcsn = op->o_callback->sc_private;
+ Attribute *a = attr_find( rs->sr_entry->e_attrs,
+ slap_schema.si_ad_entryCSN );
+
+ if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
+ slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
+ maxcsn->bv_len = a->a_vals[0].bv_len;
+ strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
+ }
+ }
+ return LDAP_SUCCESS;
+}
+
+static int
+findcsn_cb( Operation *op, SlapReply *rs )
+{
+ slap_callback *sc = op->o_callback;
+
+ /* We just want to know that at least one exists, so it's OK if
+ * we exceed the unchecked limit.
+ */
+ if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
+ (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
+ sc->sc_private = (void *)1;
+ }
+ return LDAP_SUCCESS;
+}
+
+/* Build a list of entryUUIDs for sending in a SyncID set */
+
+#define UUID_LEN 16
+
+typedef struct fpres_cookie {
+ int num;
+ BerVarray uuids;
+ char *last;
+} fpres_cookie;
+
+static int
+findpres_cb( Operation *op, SlapReply *rs )
+{
+ slap_callback *sc = op->o_callback;
+ fpres_cookie *pc = sc->sc_private;
+ Attribute *a;
+ int ret = SLAP_CB_CONTINUE;
+
+ switch ( rs->sr_type ) {
+ case REP_SEARCH:
+ a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
+ if ( a ) {
+ pc->uuids[pc->num].bv_val = pc->last;
+ AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
+ pc->uuids[pc->num].bv_len );
+ pc->num++;
+ pc->last = pc->uuids[pc->num].bv_val;
+ pc->uuids[pc->num].bv_val = NULL;
+ }
+ ret = LDAP_SUCCESS;
+ if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
+ break;
+ /* FALLTHRU */
+ case REP_RESULT:
+ ret = rs->sr_err;
+ if ( pc->num ) {
+ ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
+ 0, pc->uuids, 0 );
+ pc->uuids[pc->num].bv_val = pc->last;
+ pc->num = 0;
+ pc->last = pc->uuids[0].bv_val;
+ }
+ break;
+ default:
+ break;
+ }
+ return ret;
+}
+
+static int
+syncprov_findcsn( Operation *op, find_csn_t mode, struct berval *csn )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ syncprov_info_t *si = on->on_bi.bi_private;
+
+ slap_callback cb = {0};
+ Operation fop;
+ SlapReply frs = { REP_RESULT };
+ char buf[LDAP_PVT_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
+ char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
+ struct berval maxcsn;
+ Filter cf;
+ AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
+ fpres_cookie pcookie;
+ sync_control *srs = NULL;
+ struct slap_limits_set fc_limits;
+ int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
+ int maxid;
+
+ if ( mode != FIND_MAXCSN ) {
+ srs = op->o_controls[slap_cids.sc_LDAPsync];
+ }
+
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_findcsn: mode=%s csn=%s\n",
+ op->o_log_prefix,
+ mode == FIND_MAXCSN ?
+ "FIND_MAXCSN" :
+ mode == FIND_CSN ?
+ "FIND_CSN" :
+ "FIND_PRESENT",
+ csn ? csn->bv_val : "" );
+
+ fop = *op;
+ fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
+ /* We want pure entries, not referrals */
+ fop.o_managedsait = SLAP_CONTROL_CRITICAL;
+
+ cf.f_ava = &eq;
+ cf.f_av_desc = slap_schema.si_ad_entryCSN;
+ BER_BVZERO( &cf.f_av_value );
+ cf.f_next = NULL;
+
+ fop.o_callback = &cb;
+ fop.ors_limit = NULL;
+ fop.ors_tlimit = SLAP_NO_LIMIT;
+ fop.ors_filter = &cf;
+ fop.ors_filterstr.bv_val = buf;
+
+again:
+ switch( mode ) {
+ case FIND_MAXCSN:
+ cf.f_choice = LDAP_FILTER_GE;
+ /* If there are multiple CSNs, use the one with our serverID */
+ for ( i=0; i<si->si_numcsns; i++) {
+ if ( slap_serverID == si->si_sids[i] ) {
+ maxid = i;
+ break;
+ }
+ }
+ if ( i == si->si_numcsns ) {
+ /* No match: this is multimaster, and none of the content in the DB
+ * originated locally. Treat like no CSN.
+ */
+ return LDAP_NO_SUCH_OBJECT;
+ }
+ cf.f_av_value = si->si_ctxcsn[maxid];
+ fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
+ "(entryCSN>=%s)", cf.f_av_value.bv_val );
+ if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
+ return LDAP_OTHER;
+ }
+ fop.ors_attrsonly = 0;
+ fop.ors_attrs = csn_anlist;
+ fop.ors_slimit = SLAP_NO_LIMIT;
+ cb.sc_private = &maxcsn;
+ cb.sc_response = findmax_cb;
+ strcpy( cbuf, cf.f_av_value.bv_val );
+ maxcsn.bv_val = cbuf;
+ maxcsn.bv_len = cf.f_av_value.bv_len;
+ break;
+ case FIND_CSN:
+ if ( BER_BVISEMPTY( &cf.f_av_value )) {
+ cf.f_av_value = *csn;
+ }
+ fop.o_dn = op->o_bd->be_rootdn;
+ fop.o_ndn = op->o_bd->be_rootndn;
+ fop.o_req_dn = op->o_bd->be_suffix[0];
+ fop.o_req_ndn = op->o_bd->be_nsuffix[0];
+ /* Look for exact match the first time */
+ if ( findcsn_retry ) {
+ cf.f_choice = LDAP_FILTER_EQUALITY;
+ fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
+ "(entryCSN=%s)", cf.f_av_value.bv_val );
+ /* On retry, look for <= */
+ } else {
+ cf.f_choice = LDAP_FILTER_LE;
+ fop.ors_limit = &fc_limits;
+ memset( &fc_limits, 0, sizeof( fc_limits ));
+ fc_limits.lms_s_unchecked = 1;
+ fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
+ "(entryCSN<=%s)", cf.f_av_value.bv_val );
+ }
+ if ( fop.ors_filterstr.bv_len >= sizeof( buf ) ) {
+ return LDAP_OTHER;
+ }
+ fop.ors_attrsonly = 1;
+ fop.ors_attrs = slap_anlist_no_attrs;
+ fop.ors_slimit = 1;
+ cb.sc_private = NULL;
+ cb.sc_response = findcsn_cb;
+ break;
+ case FIND_PRESENT:
+ fop.ors_filter = op->ors_filter;
+ fop.ors_filterstr = op->ors_filterstr;
+ fop.ors_attrsonly = 0;
+ fop.ors_attrs = uuid_anlist;
+ fop.ors_slimit = SLAP_NO_LIMIT;
+ cb.sc_private = &pcookie;
+ cb.sc_response = findpres_cb;
+ pcookie.num = 0;
+
+ /* preallocate storage for a full set */
+ pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
+ sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
+ op->o_tmpmemctx );
+ pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
+ pcookie.uuids[0].bv_val = pcookie.last;
+ pcookie.uuids[0].bv_len = UUID_LEN;
+ for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
+ pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
+ pcookie.uuids[i].bv_len = UUID_LEN;
+ }
+ break;
+ }
+
+ fop.o_bd->bd_info = (BackendInfo *)on->on_info;
+ fop.o_bd->be_search( &fop, &frs );
+ fop.o_bd->bd_info = (BackendInfo *)on;
+
+ switch( mode ) {
+ case FIND_MAXCSN:
+ if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
+#ifdef CHECK_CSN
+ Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
+ assert( !syn->ssyn_validate( syn, &maxcsn ));
+#endif
+ ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
+ si->si_numops++; /* ensure a checkpoint */
+ }
+ break;
+ case FIND_CSN:
+ /* If matching CSN was not found, invalidate the context. */
+ Log4( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_findcsn: csn%s=%s %sfound\n",
+ op->o_log_prefix,
+ cf.f_choice == LDAP_FILTER_EQUALITY ? "=" : "<",
+ cf.f_av_value.bv_val, cb.sc_private ? "" : "not " );
+ if ( !cb.sc_private ) {
+ /* If we didn't find an exact match, then try for <= */
+ if ( findcsn_retry ) {
+ findcsn_retry = 0;
+ rs_reinit( &frs, REP_RESULT );
+ goto again;
+ }
+ rc = LDAP_NO_SUCH_OBJECT;
+ }
+ break;
+ case FIND_PRESENT:
+ op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
+ break;
+ }
+
+ return rc;
+}
+
+static void free_resinfo( syncres *sr )
+{
+ syncres **st;
+ int freeit = 0;
+ ldap_pvt_thread_mutex_lock( &sr->s_info->ri_mutex );
+ for (st = &sr->s_info->ri_list; *st; st = &(*st)->s_rilist) {
+ if (*st == sr) {
+ *st = sr->s_rilist;
+ break;
+ }
+ }
+ if ( !sr->s_info->ri_list )
+ freeit = 1;
+ ldap_pvt_thread_mutex_unlock( &sr->s_info->ri_mutex );
+ if ( freeit ) {
+ ldap_pvt_thread_mutex_destroy( &sr->s_info->ri_mutex );
+ if ( sr->s_info->ri_e )
+ entry_free( sr->s_info->ri_e );
+ if ( !BER_BVISNULL( &sr->s_info->ri_cookie ))
+ ch_free( sr->s_info->ri_cookie.bv_val );
+ ch_free( sr->s_info );
+ }
+}
+
+static int
+syncprov_free_syncop( syncops *so, int unlink )
+{
+ syncres *sr, *srnext;
+ GroupAssertion *ga, *gnext;
+
+ ldap_pvt_thread_mutex_lock( &so->s_mutex );
+ /* already being freed, or still in use */
+ if ( !so->s_inuse || --so->s_inuse > 0 ) {
+ ldap_pvt_thread_mutex_unlock( &so->s_mutex );
+ return 0;
+ }
+ ldap_pvt_thread_mutex_unlock( &so->s_mutex );
+ if ( unlink ) {
+ syncops **sop;
+ ldap_pvt_thread_mutex_lock( &so->s_si->si_ops_mutex );
+ for ( sop = &so->s_si->si_ops; *sop; sop = &(*sop)->s_next ) {
+ if ( *sop == so ) {
+ *sop = so->s_next;
+ break;
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &so->s_si->si_ops_mutex );
+ }
+ if ( so->s_flags & PS_IS_DETACHED ) {
+ filter_free( so->s_op->ors_filter );
+ for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
+ gnext = ga->ga_next;
+ ch_free( ga );
+ }
+ ch_free( so->s_op );
+ }
+ ch_free( so->s_base.bv_val );
+ for ( sr=so->s_res; sr; sr=srnext ) {
+ srnext = sr->s_next;
+ free_resinfo( sr );
+ ch_free( sr );
+ }
+ ldap_pvt_thread_mutex_destroy( &so->s_mutex );
+ ch_free( so );
+ return 1;
+}
+
+/* Send a persistent search response */
+static int
+syncprov_sendresp( Operation *op, resinfo *ri, syncops *so, int mode )
+{
+ SlapReply rs = { REP_SEARCH };
+ struct berval cookie, csns[2];
+ Entry e_uuid = {0};
+ Attribute a_uuid = {0};
+
+ if ( so->s_op->o_abandon )
+ return SLAPD_ABANDON;
+
+ rs.sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2, op->o_tmpmemctx );
+ rs.sr_ctrls[1] = NULL;
+ rs.sr_flags = REP_CTRLS_MUSTBEFREED;
+ csns[0] = ri->ri_csn;
+ BER_BVZERO( &csns[1] );
+ slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, slap_serverID ? slap_serverID : -1 );
+
+#ifdef LDAP_DEBUG
+ if ( so->s_sid > 0 ) {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendresp: to=%03x, cookie=%s\n",
+ op->o_log_prefix, so->s_sid, cookie.bv_val );
+ } else {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendresp: cookie=%s\n",
+ op->o_log_prefix, cookie.bv_val, 0 );
+ }
+#endif
+
+ e_uuid.e_attrs = &a_uuid;
+ a_uuid.a_desc = slap_schema.si_ad_entryUUID;
+ a_uuid.a_nvals = &ri->ri_uuid;
+ rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
+ mode, rs.sr_ctrls, 0, 1, &cookie );
+ op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+
+ rs.sr_entry = &e_uuid;
+ if ( mode == LDAP_SYNC_ADD || mode == LDAP_SYNC_MODIFY ) {
+ e_uuid = *ri->ri_e;
+ e_uuid.e_private = NULL;
+ }
+
+ switch( mode ) {
+ case LDAP_SYNC_ADD:
+ if ( ri->ri_isref && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
+ rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
+ rs.sr_err = send_search_reference( op, &rs );
+ ber_bvarray_free( rs.sr_ref );
+ break;
+ }
+ /* fallthru */
+ case LDAP_SYNC_MODIFY:
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendresp: sending %s, dn=%s\n",
+ op->o_log_prefix,
+ mode == LDAP_SYNC_ADD ? "LDAP_SYNC_ADD" : "LDAP_SYNC_MODIFY",
+ e_uuid.e_nname.bv_val );
+ rs.sr_attrs = op->ors_attrs;
+ rs.sr_err = send_search_entry( op, &rs );
+ break;
+ case LDAP_SYNC_DELETE:
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_sendresp: "
+ "sending LDAP_SYNC_DELETE, dn=%s\n",
+ op->o_log_prefix, ri->ri_dn.bv_val, 0 );
+ e_uuid.e_attrs = NULL;
+ e_uuid.e_name = ri->ri_dn;
+ e_uuid.e_nname = ri->ri_ndn;
+ if ( ri->ri_isref && so->s_op->o_managedsait <= SLAP_CONTROL_IGNORED ) {
+ struct berval bv = BER_BVNULL;
+ rs.sr_ref = &bv;
+ rs.sr_err = send_search_reference( op, &rs );
+ } else {
+ rs.sr_err = send_search_entry( op, &rs );
+ }
+ break;
+ default:
+ assert(0);
+ }
+ return rs.sr_err;
+}
+
+static void
+syncprov_qstart( syncops *so );
+
+/* Play back queued responses */
+static int
+syncprov_qplay( Operation *op, syncops *so )
+{
+ syncres *sr;
+ int rc = 0;
+
+ do {
+ ldap_pvt_thread_mutex_lock( &so->s_mutex );
+ sr = so->s_res;
+ /* Exit loop with mutex held */
+ if ( !sr )
+ break;
+ so->s_res = sr->s_next;
+ if ( !so->s_res )
+ so->s_restail = NULL;
+ ldap_pvt_thread_mutex_unlock( &so->s_mutex );
+
+ if ( !so->s_op->o_abandon ) {
+
+ if ( sr->s_mode == LDAP_SYNC_NEW_COOKIE ) {
+ SlapReply rs = { REP_INTERMEDIATE };
+
+ rc = syncprov_sendinfo( op, &rs, LDAP_TAG_SYNC_NEW_COOKIE,
+ &sr->s_info->ri_cookie, 0, NULL, 0 );
+ } else {
+ rc = syncprov_sendresp( op, sr->s_info, so, sr->s_mode );
+ }
+ }
+
+ free_resinfo( sr );
+ ch_free( sr );
+
+ if ( so->s_op->o_abandon )
+ continue;
+
+ /* Exit loop with mutex held */
+ ldap_pvt_thread_mutex_lock( &so->s_mutex );
+ break;
+
+ } while (1);
+
+ /* We now only send one change at a time, to prevent one
+ * psearch from hogging all the CPU. Resubmit this task if
+ * there are more responses queued and no errors occurred.
+ */
+
+ if ( rc == 0 && so->s_res ) {
+ syncprov_qstart( so );
+ } else {
+ so->s_flags ^= PS_TASK_QUEUED;
+ }
+
+ ldap_pvt_thread_mutex_unlock( &so->s_mutex );
+ return rc;
+}
+
+/* task for playing back queued responses */
+static void *
+syncprov_qtask( void *ctx, void *arg )
+{
+ syncops *so = arg;
+ OperationBuffer opbuf;
+ Operation *op;
+ BackendDB be;
+ int rc;
+
+ op = &opbuf.ob_op;
+ *op = *so->s_op;
+ op->o_hdr = &opbuf.ob_hdr;
+ op->o_controls = opbuf.ob_controls;
+ memset( op->o_controls, 0, sizeof(opbuf.ob_controls) );
+ op->o_sync = SLAP_CONTROL_IGNORED;
+
+ *op->o_hdr = *so->s_op->o_hdr;
+
+ op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
+ op->o_tmpmfuncs = &slap_sl_mfuncs;
+ op->o_threadctx = ctx;
+
+ /* syncprov_qplay expects a fake db */
+ be = *so->s_op->o_bd;
+ be.be_flags |= SLAP_DBFLAG_OVERLAY;
+ op->o_bd = &be;
+ LDAP_SLIST_FIRST(&op->o_extra) = NULL;
+ op->o_callback = NULL;
+
+ rc = syncprov_qplay( op, so );
+
+ /* decrement use count... */
+ syncprov_free_syncop( so, 1 );
+
+ return NULL;
+}
+
+/* Start the task to play back queued psearch responses */
+static void
+syncprov_qstart( syncops *so )
+{
+ so->s_flags |= PS_TASK_QUEUED;
+ so->s_inuse++;
+ ldap_pvt_thread_pool_submit( &connection_pool,
+ syncprov_qtask, so );
+}
+
+/* Queue a persistent search response */
+static int
+syncprov_qresp( opcookie *opc, syncops *so, int mode )
+{
+ syncres *sr;
+ resinfo *ri;
+ int srsize;
+ struct berval csn = opc->sctxcsn;
+
+ sr = ch_malloc( sizeof( syncres ));
+ sr->s_next = NULL;
+ sr->s_mode = mode;
+ if ( !opc->ssres.s_info ) {
+
+ srsize = sizeof( resinfo );
+ if ( csn.bv_len )
+ srsize += csn.bv_len + 1;
+
+ if ( opc->se ) {
+ Attribute *a;
+ ri = ch_malloc( srsize );
+ ri->ri_dn = opc->se->e_name;
+ ri->ri_ndn = opc->se->e_nname;
+ a = attr_find( opc->se->e_attrs, slap_schema.si_ad_entryUUID );
+ if ( a )
+ ri->ri_uuid = a->a_nvals[0];
+ else
+ ri->ri_uuid.bv_len = 0;
+ if ( csn.bv_len ) {
+ ri->ri_csn.bv_val = (char *)(ri + 1);
+ ri->ri_csn.bv_len = csn.bv_len;
+ memcpy( ri->ri_csn.bv_val, csn.bv_val, csn.bv_len );
+ ri->ri_csn.bv_val[csn.bv_len] = '\0';
+ } else {
+ ri->ri_csn.bv_val = NULL;
+ }
+ } else {
+ srsize += opc->suuid.bv_len +
+ opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1;
+ ri = ch_malloc( srsize );
+ ri->ri_dn.bv_val = (char *)(ri + 1);
+ ri->ri_dn.bv_len = opc->sdn.bv_len;
+ ri->ri_ndn.bv_val = lutil_strcopy( ri->ri_dn.bv_val,
+ opc->sdn.bv_val ) + 1;
+ ri->ri_ndn.bv_len = opc->sndn.bv_len;
+ ri->ri_uuid.bv_val = lutil_strcopy( ri->ri_ndn.bv_val,
+ opc->sndn.bv_val ) + 1;
+ ri->ri_uuid.bv_len = opc->suuid.bv_len;
+ AC_MEMCPY( ri->ri_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
+ if ( csn.bv_len ) {
+ ri->ri_csn.bv_val = ri->ri_uuid.bv_val + ri->ri_uuid.bv_len;
+ memcpy( ri->ri_csn.bv_val, csn.bv_val, csn.bv_len );
+ ri->ri_csn.bv_val[csn.bv_len] = '\0';
+ } else {
+ ri->ri_csn.bv_val = NULL;
+ }
+ }
+ ri->ri_list = &opc->ssres;
+ ri->ri_e = opc->se;
+ ri->ri_csn.bv_len = csn.bv_len;
+ ri->ri_isref = opc->sreference;
+ BER_BVZERO( &ri->ri_cookie );
+ ldap_pvt_thread_mutex_init( &ri->ri_mutex );
+ opc->se = NULL;
+ opc->ssres.s_info = ri;
+ }
+ ri = opc->ssres.s_info;
+ sr->s_info = ri;
+ ldap_pvt_thread_mutex_lock( &ri->ri_mutex );
+ sr->s_rilist = ri->ri_list;
+ ri->ri_list = sr;
+ if ( mode == LDAP_SYNC_NEW_COOKIE && BER_BVISNULL( &ri->ri_cookie )) {
+ syncprov_info_t *si = opc->son->on_bi.bi_private;
+
+ slap_compose_sync_cookie( NULL, &ri->ri_cookie, si->si_ctxcsn,
+ so->s_rid, slap_serverID ? slap_serverID : -1);
+ }
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_qresp: "
+ "set up a new syncres mode=%d csn=%s\n",
+ so->s_op->o_log_prefix, mode, csn.bv_val );
+ ldap_pvt_thread_mutex_unlock( &ri->ri_mutex );
+
+ ldap_pvt_thread_mutex_lock( &so->s_mutex );
+ if ( !so->s_res ) {
+ so->s_res = sr;
+ } else {
+ so->s_restail->s_next = sr;
+ }
+ so->s_restail = sr;
+
+ /* If the base of the psearch was modified, check it next time round */
+ if ( so->s_flags & PS_WROTE_BASE ) {
+ so->s_flags ^= PS_WROTE_BASE;
+ so->s_flags |= PS_FIND_BASE;
+ }
+ if (( so->s_flags & (PS_IS_DETACHED|PS_TASK_QUEUED)) == PS_IS_DETACHED ) {
+ syncprov_qstart( so );
+ }
+ ldap_pvt_thread_mutex_unlock( &so->s_mutex );
+ return LDAP_SUCCESS;
+}
+
+static int
+syncprov_drop_psearch( syncops *so, int lock )
+{
+ if ( so->s_flags & PS_IS_DETACHED ) {
+ if ( lock )
+ ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
+ so->s_op->o_conn->c_n_ops_executing--;
+ so->s_op->o_conn->c_n_ops_completed++;
+ LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
+ o_next );
+ if ( lock )
+ ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
+ }
+ return syncprov_free_syncop( so, 0 );
+}
+
+static int
+syncprov_ab_cleanup( Operation *op, SlapReply *rs )
+{
+ slap_callback *sc = op->o_callback;
+ op->o_callback = sc->sc_next;
+ syncprov_drop_psearch( sc->sc_private, 0 );
+ op->o_tmpfree( sc, op->o_tmpmemctx );
+ return 0;
+}
+
+static int
+syncprov_op_abandon( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ syncprov_info_t *si = on->on_bi.bi_private;
+ syncops *so, **sop;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ for ( sop=&si->si_ops; (so = *sop); sop = &(*sop)->s_next ) {
+ if ( so->s_op->o_connid == op->o_connid &&
+ so->s_op->o_msgid == op->orn_msgid ) {
+ so->s_op->o_abandon = 1;
+ *sop = so->s_next;
+ break;
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ if ( so ) {
+ /* Is this really a Cancel exop? */
+ if ( op->o_tag != LDAP_REQ_ABANDON ) {
+ so->s_op->o_cancel = SLAP_CANCEL_ACK;
+ rs->sr_err = LDAP_CANCELLED;
+ send_ldap_result( so->s_op, rs );
+ if ( so->s_flags & PS_IS_DETACHED ) {
+ slap_callback *cb;
+ cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
+ cb->sc_cleanup = syncprov_ab_cleanup;
+ cb->sc_next = op->o_callback;
+ cb->sc_private = so;
+ op->o_callback = cb;
+ return SLAP_CB_CONTINUE;
+ }
+ }
+ syncprov_drop_psearch( so, 0 );
+ }
+ return SLAP_CB_CONTINUE;
+}
+
+/* Find which persistent searches are affected by this operation */
+static void
+syncprov_matchops( Operation *op, opcookie *opc, int saveit )
+{
+ slap_overinst *on = opc->son;
+ syncprov_info_t *si = on->on_bi.bi_private;
+
+ fbase_cookie fc;
+ syncops **pss;
+ Entry *e = NULL;
+ Attribute *a;
+ int rc, gonext;
+ struct berval newdn;
+ int freefdn = 0;
+ BackendDB *b0 = op->o_bd, db;
+
+ fc.fdn = &op->o_req_ndn;
+ /* compute new DN */
+ if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
+ struct berval pdn;
+ if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
+ else dnParent( fc.fdn, &pdn );
+ build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
+ fc.fdn = &newdn;
+ freefdn = 1;
+ }
+ if ( op->o_tag != LDAP_REQ_ADD ) {
+ if ( !SLAP_ISOVERLAY( op->o_bd )) {
+ db = *op->o_bd;
+ op->o_bd = &db;
+ }
+ rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
+ /* If we're sending responses now, make a copy and unlock the DB */
+ if ( e && !saveit ) {
+ if ( !opc->se )
+ opc->se = entry_dup( e );
+ overlay_entry_release_ov( op, e, 0, on );
+ e = opc->se;
+ }
+ if ( rc ) {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_matchops: "
+ "%s check, error finding entry dn=%s in database\n",
+ op->o_log_prefix, saveit ? "initial" : "final", fc.fdn->bv_val );
+ op->o_bd = b0;
+ return;
+ }
+ } else {
+ e = op->ora_e;
+ if ( !saveit ) {
+ if ( !opc->se )
+ opc->se = entry_dup( e );
+ e = opc->se;
+ }
+ }
+
+ if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
+ ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
+ ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
+ opc->sreference = is_entry_referral( e );
+ a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
+ if ( a )
+ ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
+ Log4( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_matchops: "
+ "%srecording uuid for dn=%s on opc=%p\n",
+ op->o_log_prefix, a ? "" : "not ", opc->sdn.bv_val, opc );
+ } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
+ op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
+ op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
+ ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
+ ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
+ }
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ for (pss = &si->si_ops; *pss; pss = gonext ? &(*pss)->s_next : pss)
+ {
+ Operation op2;
+ Opheader oh;
+ syncmatches *sm;
+ int found = 0;
+ syncops *snext, *ss = *pss;
+
+ gonext = 1;
+ if ( ss->s_op->o_abandon )
+ continue;
+
+ /* Don't send ops back to the originator */
+ if ( opc->osid > 0 && opc->osid == ss->s_sid ) {
+ Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping original sid %03x\n",
+ opc->osid, 0, 0 );
+ continue;
+ }
+
+ /* Don't send ops back to the messenger */
+ if ( opc->rsid > 0 && opc->rsid == ss->s_sid ) {
+ Debug( LDAP_DEBUG_SYNC, "syncprov_matchops: skipping relayed sid %03x\n",
+ opc->rsid, 0, 0 );
+ continue;
+ }
+
+ /* validate base */
+ fc.fss = ss;
+ fc.fbase = 0;
+ fc.fscope = 0;
+
+ /* If the base of the search is missing, signal a refresh */
+ rc = syncprov_findbase( op, &fc );
+ if ( rc != LDAP_SUCCESS ) {
+ SlapReply rs = {REP_RESULT};
+ send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
+ "search base has changed" );
+ snext = ss->s_next;
+ if ( syncprov_drop_psearch( ss, 1 ) )
+ *pss = snext;
+ gonext = 0;
+ continue;
+ }
+
+ /* If we're sending results now, look for this op in old matches */
+ if ( !saveit ) {
+ syncmatches *old;
+
+ /* Did we modify the search base? */
+ if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
+ ldap_pvt_thread_mutex_lock( &ss->s_mutex );
+ ss->s_flags |= PS_WROTE_BASE;
+ ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
+ }
+
+ for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
+ old=sm, sm=sm->sm_next ) {
+ if ( sm->sm_op == ss ) {
+ found = 1;
+ old->sm_next = sm->sm_next;
+ op->o_tmpfree( sm, op->o_tmpmemctx );
+ break;
+ }
+ }
+ }
+
+ if ( fc.fscope ) {
+ ldap_pvt_thread_mutex_lock( &ss->s_mutex );
+ op2 = *ss->s_op;
+ oh = *op->o_hdr;
+ oh.oh_conn = ss->s_op->o_conn;
+ oh.oh_connid = ss->s_op->o_connid;
+ op2.o_bd = op->o_bd->bd_self;
+ op2.o_hdr = &oh;
+ op2.o_extra = op->o_extra;
+ op2.o_callback = NULL;
+ if (ss->s_flags & PS_FIX_FILTER) {
+ /* Skip the AND/GE clause that we stuck on in front. We
+ would lose deletes/mods that happen during the refresh
+ phase otherwise (ITS#6555) */
+ op2.ors_filter = ss->s_op->ors_filter->f_and->f_next;
+ }
+ rc = test_filter( &op2, e, op2.ors_filter );
+ ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "syncprov_matchops: sid %03x fscope %d rc %d\n",
+ ss->s_sid, fc.fscope, rc );
+
+ /* check if current o_req_dn is in scope and matches filter */
+ if ( fc.fscope && rc == LDAP_COMPARE_TRUE ) {
+ if ( saveit ) {
+ sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
+ sm->sm_next = opc->smatches;
+ sm->sm_op = ss;
+ ldap_pvt_thread_mutex_lock( &ss->s_mutex );
+ ++ss->s_inuse;
+ ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
+ opc->smatches = sm;
+ } else {
+ /* if found send UPDATE else send ADD */
+ syncprov_qresp( opc, ss,
+ found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
+ }
+ } else if ( !saveit && found ) {
+ /* send DELETE */
+ syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
+ } else if ( !saveit ) {
+ syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
+ }
+ if ( !saveit && found ) {
+ /* Decrement s_inuse, was incremented when called
+ * with saveit == TRUE
+ */
+ snext = ss->s_next;
+ if ( syncprov_free_syncop( ss, 0 ) ) {
+ *pss = snext;
+ gonext = 0;
+ }
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+
+ if ( op->o_tag != LDAP_REQ_ADD && e ) {
+ if ( !SLAP_ISOVERLAY( op->o_bd )) {
+ op->o_bd = &db;
+ }
+ if ( saveit )
+ overlay_entry_release_ov( op, e, 0, on );
+ op->o_bd = b0;
+ }
+ if ( !saveit ) {
+ if ( opc->ssres.s_info )
+ free_resinfo( &opc->ssres );
+ else if ( opc->se )
+ entry_free( opc->se );
+ }
+ if ( freefdn ) {
+ op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
+ }
+ op->o_bd = b0;
+}
+
+static int
+syncprov_op_cleanup( Operation *op, SlapReply *rs )
+{
+ slap_callback *cb = op->o_callback;
+ opcookie *opc = cb->sc_private;
+ slap_overinst *on = opc->son;
+ syncprov_info_t *si = on->on_bi.bi_private;
+ syncmatches *sm, *snext;
+ modtarget *mt;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ if ( si->si_active )
+ si->si_active--;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+
+ for (sm = opc->smatches; sm; sm=snext) {
+ snext = sm->sm_next;
+ syncprov_free_syncop( sm->sm_op, 1 );
+ op->o_tmpfree( sm, op->o_tmpmemctx );
+ }
+
+ /* Remove op from lock table */
+ mt = opc->smt;
+ if ( mt ) {
+ modinst *mi = (modinst *)(opc+1), **m2;
+ ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
+ for (m2 = &mt->mt_mods; ; m2 = &(*m2)->mi_next) {
+ if ( *m2 == mi ) {
+ *m2 = mi->mi_next;
+ if ( mt->mt_tail == mi )
+ mt->mt_tail = ( m2 == &mt->mt_mods ) ? NULL : (modinst *)m2;
+ break;
+ }
+ }
+ /* If there are more, promote the next one */
+ if ( mt->mt_mods ) {
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ } else {
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
+ avl_delete( &si->si_mods, mt, sp_avl_cmp );
+ ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
+ ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
+ ch_free( mt->mt_dn.bv_val );
+ ch_free( mt );
+ }
+ }
+ if ( !BER_BVISNULL( &opc->suuid ))
+ op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
+ if ( !BER_BVISNULL( &opc->sndn ))
+ op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
+ if ( !BER_BVISNULL( &opc->sdn ))
+ op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
+ op->o_callback = cb->sc_next;
+ op->o_tmpfree(cb, op->o_tmpmemctx);
+
+ return 0;
+}
+
+static void
+syncprov_checkpoint( Operation *op, slap_overinst *on )
+{
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+ Modifications mod;
+ Operation opm;
+ SlapReply rsm = {REP_RESULT};
+ slap_callback cb = {0};
+ BackendDB be;
+ BackendInfo *bi;
+
+#ifdef CHECK_CSN
+ Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
+
+ int i;
+ for ( i=0; i<si->si_numcsns; i++ ) {
+ assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
+ }
+#endif
+
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_checkpoint: running checkpoint\n",
+ op->o_log_prefix, 0, 0 );
+
+ mod.sml_numvals = si->si_numcsns;
+ mod.sml_values = si->si_ctxcsn;
+ mod.sml_nvalues = NULL;
+ mod.sml_desc = slap_schema.si_ad_contextCSN;
+ mod.sml_op = LDAP_MOD_REPLACE;
+ mod.sml_flags = SLAP_MOD_INTERNAL;
+ mod.sml_next = NULL;
+
+ cb.sc_response = slap_null_cb;
+ opm = *op;
+ opm.o_tag = LDAP_REQ_MODIFY;
+ opm.o_callback = &cb;
+ opm.orm_modlist = &mod;
+ opm.orm_no_opattrs = 1;
+ if ( SLAP_GLUE_SUBORDINATE( op->o_bd )) {
+ be = *on->on_info->oi_origdb;
+ opm.o_bd = &be;
+ }
+ opm.o_req_dn = si->si_contextdn;
+ opm.o_req_ndn = si->si_contextdn;
+ bi = opm.o_bd->bd_info;
+ opm.o_bd->bd_info = on->on_info->oi_orig;
+ opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
+ opm.o_no_schema_check = 1;
+ opm.o_dont_replicate = 1;
+ opm.o_opid = -1;
+ opm.o_bd->be_modify( &opm, &rsm );
+
+ if ( rsm.sr_err == LDAP_NO_SUCH_OBJECT &&
+ SLAP_SYNC_SUBENTRY( opm.o_bd )) {
+ const char *text;
+ char txtbuf[SLAP_TEXT_BUFLEN];
+ size_t textlen = sizeof txtbuf;
+ Entry *e = slap_create_context_csn_entry( opm.o_bd, NULL );
+ rs_reinit( &rsm, REP_RESULT );
+ slap_mods2entry( &mod, &e, 0, 1, &text, txtbuf, textlen);
+ opm.ora_e = e;
+ opm.o_bd->be_add( &opm, &rsm );
+ if ( e == opm.ora_e )
+ be_entry_release_w( &opm, opm.ora_e );
+ }
+ opm.o_bd->bd_info = bi;
+
+ if ( mod.sml_next != NULL ) {
+ slap_mods_free( mod.sml_next, 1 );
+ }
+#ifdef CHECK_CSN
+ for ( i=0; i<si->si_numcsns; i++ ) {
+ assert( !syn->ssyn_validate( syn, si->si_ctxcsn+i ));
+ }
+#endif
+}
+
+static void
+syncprov_add_slog( Operation *op )
+{
+ opcookie *opc = op->o_callback->sc_private;
+ slap_overinst *on = opc->son;
+ syncprov_info_t *si = on->on_bi.bi_private;
+ sessionlog *sl;
+ slog_entry *se;
+ char uuidstr[40];
+ int rc;
+
+ sl = si->si_logs;
+ {
+ if ( BER_BVISEMPTY( &op->o_csn ) ) {
+ /* During the syncrepl refresh phase we can receive operations
+ * without a csn. We cannot reliably determine the consumers
+ * state with respect to such operations, so we ignore them and
+ * wipe out anything in the log if we see them.
+ */
+ ldap_pvt_thread_rdwr_wlock( &sl->sl_mutex );
+ /* can only do this if no one else is reading the log at the moment */
+ if ( !sl->sl_playing ) {
+ tavl_free( sl->sl_entries, (AVL_FREE)ch_free );
+ sl->sl_num = 0;
+ sl->sl_entries = NULL;
+ }
+ ldap_pvt_thread_rdwr_wunlock( &sl->sl_mutex );
+ return;
+ }
+
+ /* Allocate a record. UUIDs are not NUL-terminated. */
+ se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
+ op->o_csn.bv_len + 1 );
+ se->se_tag = op->o_tag;
+
+ se->se_uuid.bv_val = (char *)(&se[1]);
+ AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
+ se->se_uuid.bv_len = opc->suuid.bv_len;
+
+ se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
+ AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
+ se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
+ se->se_csn.bv_len = op->o_csn.bv_len;
+ se->se_sid = slap_parse_csn_sid( &se->se_csn );
+
+ ldap_pvt_thread_rdwr_wlock( &sl->sl_mutex );
+ if ( LogTest( LDAP_DEBUG_SYNC ) ) {
+ uuidstr[0] = 0;
+ if ( !BER_BVISEMPTY( &opc->suuid ) ) {
+ lutil_uuidstr_from_normalized( opc->suuid.bv_val, opc->suuid.bv_len,
+ uuidstr, 40 );
+ }
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_add_slog: "
+ "adding csn=%s to sessionlog, uuid=%s\n",
+ op->o_log_prefix, se->se_csn.bv_val, uuidstr );
+ }
+ if ( !sl->sl_entries ) {
+ if ( !sl->sl_mincsn ) {
+ sl->sl_numcsns = 1;
+ sl->sl_mincsn = ch_malloc( 2*sizeof( struct berval ));
+ sl->sl_sids = ch_malloc( sizeof( int ));
+ sl->sl_sids[0] = se->se_sid;
+ ber_dupbv( sl->sl_mincsn, &se->se_csn );
+ BER_BVZERO( &sl->sl_mincsn[1] );
+ }
+ }
+ rc = tavl_insert( &sl->sl_entries, se, syncprov_sessionlog_cmp, avl_dup_error );
+ if ( rc ) {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_add_slog: "
+ "duplicate sessionlog entry ignored: csn=%s, uuid=%s\n",
+ op->o_log_prefix, se->se_csn.bv_val, uuidstr );
+ ch_free( se );
+ goto leave;
+ }
+ sl->sl_num++;
+ if ( !sl->sl_playing && sl->sl_num > sl->sl_size ) {
+ Avlnode *edge = tavl_end( sl->sl_entries, TAVL_DIR_LEFT );
+ while ( sl->sl_num > sl->sl_size ) {
+ int i;
+ Avlnode *next = tavl_next( edge, TAVL_DIR_RIGHT );
+ se = edge->avl_data;
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_add_slog: "
+ "expiring csn=%s from sessionlog (sessionlog size=%d)\n",
+ op->o_log_prefix, se->se_csn.bv_val, sl->sl_num );
+ for ( i=0; i<sl->sl_numcsns; i++ )
+ if ( sl->sl_sids[i] >= se->se_sid )
+ break;
+ if ( i == sl->sl_numcsns || sl->sl_sids[i] != se->se_sid ) {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_add_slog: "
+ "adding csn=%s to mincsn\n",
+ op->o_log_prefix, se->se_csn.bv_val, 0 );
+ slap_insert_csn_sids( (struct sync_cookie *)sl,
+ i, se->se_sid, &se->se_csn );
+ } else {
+ Log4( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_add_slog: "
+ "updating mincsn for sid=%d csn=%s to %s\n",
+ op->o_log_prefix, se->se_sid, sl->sl_mincsn[i].bv_val, se->se_csn.bv_val );
+ ber_bvreplace( &sl->sl_mincsn[i], &se->se_csn );
+ }
+ tavl_delete( &sl->sl_entries, se, syncprov_sessionlog_cmp );
+ ch_free( se );
+ edge = next;
+ sl->sl_num--;
+ }
+ }
+leave:
+ ldap_pvt_thread_rdwr_wunlock( &sl->sl_mutex );
+ }
+}
+
+/* Just set a flag if we found the matching entry */
+static int
+playlog_cb( Operation *op, SlapReply *rs )
+{
+ if ( rs->sr_type == REP_SEARCH ) {
+ op->o_callback->sc_private = (void *)1;
+ }
+ return rs->sr_err;
+}
+
+/* enter with sl->sl_mutex locked, release before returning */
+static void
+syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
+ sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids,
+ struct berval *mincsn )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ int i, j, ndel, num, nmods, mmods;
+ Avlnode *entry;
+ char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
+ BerVarray uuids;
+ struct berval delcsn[2];
+
+ if ( !sl->sl_num ) {
+ ldap_pvt_thread_rdwr_wunlock( &sl->sl_mutex );
+ return;
+ }
+
+ num = sl->sl_num;
+ i = 0;
+ nmods = 0;
+ sl->sl_playing++;
+ ldap_pvt_thread_rdwr_wunlock( &sl->sl_mutex );
+
+ uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
+ num * UUID_LEN, op->o_tmpmemctx );
+ uuids[0].bv_val = (char *)(uuids + num + 1);
+
+ delcsn[0].bv_len = 0;
+ delcsn[0].bv_val = cbuf;
+ BER_BVZERO(&delcsn[1]);
+
+ ldap_pvt_thread_rdwr_rlock( &sl->sl_mutex );
+ /* Make a copy of the relevant UUIDs. Put the Deletes up front
+ * and everything else at the end. Do this first so we can
+ * let the write side manage the sessionlog again.
+ */
+ assert( sl->sl_entries );
+
+ /* Find first relevant log entry. If greater than mincsn, backtrack one entry */
+ {
+ slog_entry te = {0};
+ te.se_csn = *mincsn;
+ entry = tavl_find3( sl->sl_entries, &te, syncprov_sessionlog_cmp, &ndel );
+ }
+ if ( ndel > 0 && entry )
+ entry = tavl_next( entry, TAVL_DIR_LEFT );
+ /* if none, just start at beginning */
+ if ( !entry )
+ entry = tavl_end( sl->sl_entries, TAVL_DIR_LEFT );
+
+ do {
+ slog_entry *se = entry->avl_data;
+ int k;
+
+ /* Make sure writes can still make progress */
+ ldap_pvt_thread_rdwr_runlock( &sl->sl_mutex );
+ ndel = 1;
+ for ( k=0; k<srs->sr_state.numcsns; k++ ) {
+ if ( se->se_sid == srs->sr_state.sids[k] ) {
+ ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
+ break;
+ }
+ }
+ if ( ndel <= 0 ) {
+ ldap_pvt_thread_rdwr_rlock( &sl->sl_mutex );
+ continue;
+ }
+ ndel = 0;
+ for ( k=0; k<numcsns; k++ ) {
+ if ( se->se_sid == sids[k] ) {
+ ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
+ break;
+ }
+ }
+ if ( ndel > 0 ) {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_playlog: "
+ "cmp %d, too new\n", op->o_log_prefix, ndel, 0 );
+ ldap_pvt_thread_rdwr_rlock( &sl->sl_mutex );
+ break;
+ }
+ if ( se->se_tag == LDAP_REQ_DELETE ) {
+ j = i;
+ i++;
+ AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
+ delcsn[0].bv_len = se->se_csn.bv_len;
+ delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
+ } else {
+ if ( se->se_tag == LDAP_REQ_ADD ) {
+ ldap_pvt_thread_rdwr_rlock( &sl->sl_mutex );
+ continue;
+ }
+ nmods++;
+ j = num - nmods;
+ }
+ uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
+ AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
+ uuids[j].bv_len = UUID_LEN;
+
+ if ( LogTest( LDAP_DEBUG_SYNC ) ) {
+ char uuidstr[40] = {};
+ lutil_uuidstr_from_normalized( uuids[j].bv_val, uuids[j].bv_len,
+ uuidstr, 40 );
+ Log4( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_playlog: "
+ "picking a %s entry uuid=%s cookie=%s\n",
+ op->o_log_prefix, se->se_tag == LDAP_REQ_DELETE ? "deleted" : "modified",
+ uuidstr, delcsn[0].bv_len ? delcsn[0].bv_val : "(null)" );
+ }
+ ldap_pvt_thread_rdwr_rlock( &sl->sl_mutex );
+ } while ( (entry = tavl_next( entry, TAVL_DIR_RIGHT )) != NULL );
+ ldap_pvt_thread_rdwr_runlock( &sl->sl_mutex );
+ ldap_pvt_thread_rdwr_wlock( &sl->sl_mutex );
+ sl->sl_playing--;
+ ldap_pvt_thread_rdwr_wunlock( &sl->sl_mutex );
+
+ ndel = i;
+
+ /* Zero out unused slots */
+ for ( i=ndel; i < num - nmods; i++ )
+ uuids[i].bv_len = 0;
+
+ /* Mods must be validated to see if they belong in this delete set.
+ */
+
+ mmods = nmods;
+ /* Strip any duplicates */
+ for ( i=0; i<nmods; i++ ) {
+ for ( j=0; j<ndel; j++ ) {
+ if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
+ uuids[num - 1 - i].bv_len = 0;
+ mmods --;
+ break;
+ }
+ }
+ if ( uuids[num - 1 - i].bv_len == 0 ) continue;
+ for ( j=0; j<i; j++ ) {
+ if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
+ uuids[num - 1 - i].bv_len = 0;
+ mmods --;
+ break;
+ }
+ }
+ }
+
+ if ( mmods ) {
+ Operation fop;
+ int rc;
+ Filter mf, af;
+ AttributeAssertion eq = ATTRIBUTEASSERTION_INIT;
+ slap_callback cb = {0};
+
+ fop = *op;
+
+ fop.o_sync_mode = 0;
+ fop.o_callback = &cb;
+ fop.ors_limit = NULL;
+ fop.ors_tlimit = SLAP_NO_LIMIT;
+ fop.ors_attrs = slap_anlist_all_attributes;
+ fop.ors_attrsonly = 0;
+ fop.o_managedsait = SLAP_CONTROL_CRITICAL;
+
+ af.f_choice = LDAP_FILTER_AND;
+ af.f_next = NULL;
+ af.f_and = &mf;
+ mf.f_choice = LDAP_FILTER_EQUALITY;
+ mf.f_ava = &eq;
+ mf.f_av_desc = slap_schema.si_ad_entryUUID;
+ mf.f_next = fop.ors_filter;
+
+ fop.ors_filter = &af;
+
+ cb.sc_response = playlog_cb;
+ fop.o_bd->bd_info = (BackendInfo *)on->on_info;
+
+ for ( i=ndel; i<num; i++ ) {
+ if ( uuids[i].bv_len != 0 ) {
+ SlapReply frs = { REP_RESULT };
+
+ mf.f_av_value = uuids[i];
+ cb.sc_private = NULL;
+ fop.ors_slimit = 1;
+ rc = fop.o_bd->be_search( &fop, &frs );
+
+ /* If entry was not found, add to delete list */
+ if ( !cb.sc_private ) {
+ uuids[ndel++] = uuids[i];
+ }
+ }
+ }
+ fop.o_bd->bd_info = (BackendInfo *)on;
+ }
+ if ( ndel ) {
+ struct berval cookie;
+
+ if ( delcsn[0].bv_len ) {
+ slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
+ slap_serverID ? slap_serverID : -1 );
+
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_playlog: cookie=%s\n",
+ op->o_log_prefix, cookie.bv_val, 0 );
+ }
+
+ uuids[ndel].bv_val = NULL;
+ syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET,
+ delcsn[0].bv_len ? &cookie : NULL, 0, uuids, 1 );
+ if ( delcsn[0].bv_len ) {
+ op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+ }
+ }
+ op->o_tmpfree( uuids, op->o_tmpmemctx );
+}
+
+static int
+syncprov_new_ctxcsn( opcookie *opc, syncprov_info_t *si, int csn_changed, int numvals, BerVarray vals )
+{
+ unsigned i;
+ int j, sid;
+
+ for ( i=0; i<numvals; i++ ) {
+ sid = slap_parse_csn_sid( &vals[i] );
+ for ( j=0; j<si->si_numcsns; j++ ) {
+ if ( sid < si->si_sids[j] )
+ break;
+ if ( sid == si->si_sids[j] ) {
+ if ( ber_bvcmp( &vals[i], &si->si_ctxcsn[j] ) > 0 ) {
+ ber_bvreplace( &si->si_ctxcsn[j], &vals[i] );
+ csn_changed = 1;
+ }
+ break;
+ }
+ }
+
+ if ( j == si->si_numcsns || sid != si->si_sids[j] ) {
+ slap_insert_csn_sids( (struct sync_cookie *)&si->si_ctxcsn,
+ j, sid, &vals[i] );
+ csn_changed = 1;
+ }
+ }
+ if ( csn_changed )
+ si->si_dirty = 0;
+ ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
+
+ if ( csn_changed ) {
+ syncops *ss;
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ for ( ss = si->si_ops; ss; ss = ss->s_next ) {
+ if ( ss->s_op->o_abandon )
+ continue;
+ /* Send the updated csn to all syncrepl consumers,
+ * including the server from which it originated.
+ * The syncrepl consumer and syncprov provider on
+ * the originating server may be configured to store
+ * their csn values in different entries.
+ */
+ syncprov_qresp( opc, ss, LDAP_SYNC_NEW_COOKIE );
+ }
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ }
+ return csn_changed;
+}
+
+static int
+syncprov_op_response( Operation *op, SlapReply *rs )
+{
+ opcookie *opc = op->o_callback->sc_private;
+ slap_overinst *on = opc->son;
+ syncprov_info_t *si = on->on_bi.bi_private;
+ syncmatches *sm;
+
+ if ( rs->sr_err == LDAP_SUCCESS )
+ {
+ struct berval maxcsn;
+ char cbuf[LDAP_PVT_CSNSTR_BUFSIZE];
+ int do_check = 0, have_psearches, foundit, csn_changed = 0;
+
+ ldap_pvt_thread_mutex_lock( &si->si_resp_mutex );
+
+ /* Update our context CSN */
+ cbuf[0] = '\0';
+ maxcsn.bv_val = cbuf;
+ maxcsn.bv_len = sizeof(cbuf);
+ ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
+
+ slap_get_commit_csn( op, &maxcsn, &foundit );
+ if ( BER_BVISEMPTY( &maxcsn ) && SLAP_GLUE_SUBORDINATE( op->o_bd )) {
+ /* syncrepl queues the CSN values in the db where
+ * it is configured , not where the changes are made.
+ * So look for a value in the glue db if we didn't
+ * find any in this db.
+ */
+ BackendDB *be = op->o_bd;
+ op->o_bd = select_backend( &be->be_nsuffix[0], 1);
+ maxcsn.bv_val = cbuf;
+ maxcsn.bv_len = sizeof(cbuf);
+ slap_get_commit_csn( op, &maxcsn, &foundit );
+ op->o_bd = be;
+ }
+ if ( !BER_BVISEMPTY( &maxcsn ) ) {
+ int i, sid;
+#ifdef CHECK_CSN
+ Syntax *syn = slap_schema.si_ad_contextCSN->ad_type->sat_syntax;
+ assert( !syn->ssyn_validate( syn, &maxcsn ));
+#endif
+ sid = slap_parse_csn_sid( &maxcsn );
+ for ( i=0; i<si->si_numcsns; i++ ) {
+ if ( sid < si->si_sids[i] )
+ break;
+ if ( sid == si->si_sids[i] ) {
+ if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
+ ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
+ csn_changed = 1;
+ }
+ break;
+ }
+ }
+ /* It's a new SID for us */
+ if ( i == si->si_numcsns || sid != si->si_sids[i] ) {
+ slap_insert_csn_sids((struct sync_cookie *)&(si->si_ctxcsn),
+ i, sid, &maxcsn );
+ csn_changed = 1;
+ }
+ }
+
+ /* Don't do any processing for consumer contextCSN updates */
+ if ( SLAPD_SYNC_IS_SYNCCONN( op->o_connid ) &&
+ op->o_tag == LDAP_REQ_MODIFY &&
+ op->orm_modlist &&
+ op->orm_modlist->sml_op == LDAP_MOD_REPLACE &&
+ op->orm_modlist->sml_desc == slap_schema.si_ad_contextCSN ) {
+ /* Catch contextCSN updates from syncrepl. We have to look at
+ * all the attribute values, as there may be more than one csn
+ * that changed, and only one can be passed in the csn queue.
+ */
+ csn_changed = syncprov_new_ctxcsn( opc, si, csn_changed,
+ op->orm_modlist->sml_numvals, op->orm_modlist->sml_values );
+ if ( csn_changed )
+ si->si_numops++;
+ goto leave;
+ }
+ if ( op->o_dont_replicate ) {
+ if ( csn_changed )
+ si->si_numops++;
+ ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
+ goto leave;
+ }
+
+ /* If we're adding the context entry, parse all of its contextCSNs */
+ if ( op->o_tag == LDAP_REQ_ADD &&
+ dn_match( &op->o_req_ndn, &si->si_contextdn )) {
+ Attribute *a = attr_find( op->ora_e->e_attrs, slap_schema.si_ad_contextCSN );
+ if ( a ) {
+ csn_changed = syncprov_new_ctxcsn( opc, si, csn_changed, a->a_numvals, a->a_vals );
+ if ( csn_changed )
+ si->si_numops++;
+ goto added;
+ }
+ }
+
+ if ( csn_changed )
+ si->si_numops++;
+ if ( si->si_chkops || si->si_chktime ) {
+ /* Never checkpoint adding the context entry,
+ * it will deadlock
+ */
+ if ( op->o_tag != LDAP_REQ_ADD ||
+ !dn_match( &op->o_req_ndn, &si->si_contextdn )) {
+ if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
+ do_check = 1;
+ si->si_numops = 0;
+ }
+ if ( si->si_chktime &&
+ (op->o_time - si->si_chklast >= si->si_chktime )) {
+ if ( si->si_chklast ) {
+ do_check = 1;
+ si->si_chklast = op->o_time;
+ } else {
+ si->si_chklast = 1;
+ }
+ }
+ }
+ }
+ si->si_dirty = !csn_changed;
+ ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
+
+added:
+ if ( do_check ) {
+ ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
+ syncprov_checkpoint( op, on );
+ ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
+ }
+
+ /* only update consumer ctx if this is a newer csn */
+ if ( csn_changed ) {
+ opc->sctxcsn = maxcsn;
+ }
+
+ /* Handle any persistent searches */
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ have_psearches = ( si->si_ops != NULL );
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ if ( have_psearches ) {
+ switch(op->o_tag) {
+ case LDAP_REQ_ADD:
+ case LDAP_REQ_MODIFY:
+ case LDAP_REQ_MODRDN:
+ case LDAP_REQ_EXTENDED:
+ syncprov_matchops( op, opc, 0 );
+ break;
+ case LDAP_REQ_DELETE:
+ /* for each match in opc->smatches:
+ * send DELETE msg
+ */
+ for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
+ if ( sm->sm_op->s_op->o_abandon )
+ continue;
+ syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
+ }
+ if ( opc->ssres.s_info )
+ free_resinfo( &opc->ssres );
+ break;
+ }
+ }
+
+ /* Add any log records */
+ if ( si->si_logs ) {
+ syncprov_add_slog( op );
+ }
+leave: ldap_pvt_thread_mutex_unlock( &si->si_resp_mutex );
+ }
+ return SLAP_CB_CONTINUE;
+}
+
+/* We don't use a subentry to store the context CSN any more.
+ * We expose the current context CSN as an operational attribute
+ * of the suffix entry.
+ */
+static int
+syncprov_op_compare( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ syncprov_info_t *si = on->on_bi.bi_private;
+ int rc = SLAP_CB_CONTINUE;
+
+ if ( dn_match( &op->o_req_ndn, &si->si_contextdn ) &&
+ op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
+ {
+ Entry e = {0};
+ Attribute a = {0};
+
+ e.e_name = si->si_contextdn;
+ e.e_nname = si->si_contextdn;
+ e.e_attrs = &a;
+
+ a.a_desc = slap_schema.si_ad_contextCSN;
+
+ ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
+
+ a.a_vals = si->si_ctxcsn;
+ a.a_nvals = a.a_vals;
+ a.a_numvals = si->si_numcsns;
+
+ rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
+ &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
+ if ( ! rs->sr_err ) {
+ rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+ goto return_results;
+ }
+
+ if ( get_assert( op ) &&
+ ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
+ {
+ rs->sr_err = LDAP_ASSERTION_FAILED;
+ goto return_results;
+ }
+
+
+ rs->sr_err = LDAP_COMPARE_FALSE;
+
+ if ( attr_valfind( &a,
+ SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
+ SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
+ &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
+ {
+ rs->sr_err = LDAP_COMPARE_TRUE;
+ }
+
+return_results:;
+
+ ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
+
+ send_ldap_result( op, rs );
+
+ if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
+ rs->sr_err = LDAP_SUCCESS;
+ }
+ rc = rs->sr_err;
+ }
+
+ return rc;
+}
+
+static int
+syncprov_op_mod( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ syncprov_info_t *si = on->on_bi.bi_private;
+ slap_callback *cb;
+ opcookie *opc;
+ int have_psearches, cbsize;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ have_psearches = ( si->si_ops != NULL );
+ si->si_active++;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+
+ cbsize = sizeof(slap_callback) + sizeof(opcookie) +
+ (have_psearches ? sizeof(modinst) : 0 );
+
+ cb = op->o_tmpcalloc(1, cbsize, op->o_tmpmemctx);
+ opc = (opcookie *)(cb+1);
+ opc->son = on;
+ cb->sc_response = syncprov_op_response;
+ cb->sc_cleanup = syncprov_op_cleanup;
+ cb->sc_private = opc;
+ cb->sc_next = op->o_callback;
+ op->o_callback = cb;
+
+ opc->osid = -1;
+ opc->rsid = -1;
+ if ( op->o_csn.bv_val ) {
+ opc->osid = slap_parse_csn_sid( &op->o_csn );
+ }
+ if ( op->o_controls ) {
+ struct sync_cookie *scook =
+ op->o_controls[slap_cids.sc_LDAPsync];
+ if ( scook )
+ opc->rsid = scook->sid;
+ }
+
+ if ( op->o_dont_replicate )
+ return SLAP_CB_CONTINUE;
+
+ /* If there are active persistent searches, lock this operation.
+ * See seqmod.c for the locking logic on its own.
+ */
+ if ( have_psearches ) {
+ modtarget *mt, mtdummy;
+ modinst *mi;
+
+ mi = (modinst *)(opc+1);
+ mi->mi_op = op;
+
+ /* See if we're already modifying this entry... */
+ mtdummy.mt_dn = op->o_req_ndn;
+retry:
+ ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
+ mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
+ if ( mt ) {
+ ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
+ if ( mt->mt_mods == NULL ) {
+ /* Cannot reuse this mt, as another thread is about
+ * to release it in syncprov_op_cleanup. Wait for them
+ * to finish; our own insert is required to succeed.
+ */
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
+ ldap_pvt_thread_yield();
+ goto retry;
+ }
+ }
+ if ( mt ) {
+ mt->mt_tail->mi_next = mi;
+ mt->mt_tail = mi;
+ ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
+ /* wait for this op to get to head of list */
+ while ( mt->mt_mods != mi ) {
+ modinst *m2;
+ /* don't wait on other mods from the same thread */
+ for ( m2 = mt->mt_mods; m2; m2 = m2->mi_next ) {
+ if ( m2->mi_op->o_threadctx == op->o_threadctx ) {
+ break;
+ }
+ }
+ if ( m2 )
+ break;
+
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ /* FIXME: if dynamic config can delete overlays or
+ * databases we'll have to check for cleanup here.
+ * Currently it's not an issue because there are
+ * no dynamic config deletes...
+ */
+ if ( slapd_shutdown )
+ return SLAPD_ABANDON;
+
+ if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
+ ldap_pvt_thread_yield();
+ ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
+
+ /* clean up if the caller is giving up */
+ if ( op->o_abandon ) {
+ modinst **m2;
+ slap_callback **sc;
+ for (m2 = &mt->mt_mods; ; m2 = &(*m2)->mi_next) {
+ if ( *m2 == mi ) {
+ *m2 = mi->mi_next;
+ if ( mt->mt_tail == mi )
+ mt->mt_tail = ( m2 == &mt->mt_mods ) ? NULL : (modinst *)m2;
+ break;
+ }
+ }
+ for (sc = &op->o_callback; ; sc = &(*sc)->sc_next) {
+ if ( *sc == cb ) {
+ *sc = cb->sc_next;
+ break;
+ }
+ }
+ op->o_tmpfree( cb, op->o_tmpmemctx );
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ return SLAPD_ABANDON;
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
+ } else {
+ /* Record that we're modifying this entry now */
+ mt = ch_malloc( sizeof(modtarget) );
+ mt->mt_mods = mi;
+ mt->mt_tail = mi;
+ ber_dupbv( &mt->mt_dn, &mi->mi_op->o_req_ndn );
+ ldap_pvt_thread_mutex_init( &mt->mt_mutex );
+ avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
+ ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
+ }
+ opc->smt = mt;
+ }
+
+ if (( have_psearches || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
+ syncprov_matchops( op, opc, 1 );
+
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+syncprov_op_extended( Operation *op, SlapReply *rs )
+{
+ if ( exop_is_write( op ))
+ return syncprov_op_mod( op, rs );
+
+ return SLAP_CB_CONTINUE;
+}
+
+typedef struct searchstate {
+ slap_overinst *ss_on;
+ syncops *ss_so;
+ BerVarray ss_ctxcsn;
+ int *ss_sids;
+ int ss_numcsns;
+#define SS_PRESENT 0x01
+#define SS_CHANGED 0x02
+ int ss_flags;
+} searchstate;
+
+typedef struct SyncOperationBuffer {
+ Operation sob_op;
+ Opheader sob_hdr;
+ OpExtra sob_oe;
+ AttributeName sob_extra; /* not always present */
+ /* Further data allocated here */
+} SyncOperationBuffer;
+
+static void
+syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
+{
+ SyncOperationBuffer *sopbuf2;
+ Operation *op2;
+ int i, alen = 0;
+ size_t size;
+ char *ptr;
+ GroupAssertion *g1, *g2;
+
+ /* count the search attrs */
+ for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
+ alen += op->ors_attrs[i].an_name.bv_len + 1;
+ }
+ /* Make a new copy of the operation */
+ size = offsetof( SyncOperationBuffer, sob_extra ) +
+ (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
+ op->o_req_dn.bv_len + 1 +
+ op->o_req_ndn.bv_len + 1 +
+ op->o_ndn.bv_len + 1 +
+ so->s_filterstr.bv_len + 1;
+ sopbuf2 = ch_calloc( 1, size );
+ op2 = &sopbuf2->sob_op;
+ op2->o_hdr = &sopbuf2->sob_hdr;
+ LDAP_SLIST_FIRST(&op2->o_extra) = &sopbuf2->sob_oe;
+
+ /* Copy the fields we care about explicitly, leave the rest alone */
+ *op2->o_hdr = *op->o_hdr;
+ op2->o_tag = op->o_tag;
+ op2->o_time = op->o_time;
+ op2->o_bd = on->on_info->oi_origdb;
+ op2->o_request = op->o_request;
+ op2->o_managedsait = op->o_managedsait;
+ LDAP_SLIST_FIRST(&op2->o_extra)->oe_key = on;
+ LDAP_SLIST_NEXT(LDAP_SLIST_FIRST(&op2->o_extra), oe_next) = NULL;
+
+ ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
+ if ( i ) {
+ op2->ors_attrs = (AttributeName *) ptr;
+ ptr = (char *) &op2->ors_attrs[i+1];
+ for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
+ op2->ors_attrs[i] = op->ors_attrs[i];
+ op2->ors_attrs[i].an_name.bv_val = ptr;
+ ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
+ }
+ BER_BVZERO( &op2->ors_attrs[i].an_name );
+ }
+
+ op2->o_authz = op->o_authz;
+ op2->o_ndn.bv_val = ptr;
+ ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
+ op2->o_dn = op2->o_ndn;
+ op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
+ op2->o_req_dn.bv_val = ptr;
+ ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
+ op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
+ op2->o_req_ndn.bv_val = ptr;
+ ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
+ op2->ors_filterstr.bv_val = ptr;
+ strcpy( ptr, so->s_filterstr.bv_val );
+ op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
+
+ /* Skip the AND/GE clause that we stuck on in front */
+ if ( so->s_flags & PS_FIX_FILTER ) {
+ op2->ors_filter = op->ors_filter->f_and->f_next;
+ so->s_flags ^= PS_FIX_FILTER;
+ } else {
+ op2->ors_filter = op->ors_filter;
+ }
+ op2->ors_filter = filter_dup( op2->ors_filter, NULL );
+ so->s_op = op2;
+
+ /* Copy any cached group ACLs individually */
+ op2->o_groups = NULL;
+ for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
+ g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
+ *g2 = *g1;
+ strcpy( g2->ga_ndn, g1->ga_ndn );
+ g2->ga_next = op2->o_groups;
+ op2->o_groups = g2;
+ }
+ /* Don't allow any further group caching */
+ op2->o_do_not_cache = 1;
+
+ /* Add op2 to conn so abandon will find us */
+ op->o_conn->c_n_ops_executing++;
+ op->o_conn->c_n_ops_completed--;
+ LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
+ so->s_flags |= PS_IS_DETACHED;
+
+ /* Prevent anyone else from trying to send a result for this op */
+ op->o_abandon = 1;
+}
+
+static int
+syncprov_search_response( Operation *op, SlapReply *rs )
+{
+ searchstate *ss = op->o_callback->sc_private;
+ slap_overinst *on = ss->ss_on;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+ sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
+
+ if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
+ Attribute *a;
+ /* If we got a referral without a referral object, there's
+ * something missing that we cannot replicate. Just ignore it.
+ * The consumer will abort because we didn't send the expected
+ * control.
+ */
+ if ( !rs->sr_entry ) {
+ assert( rs->sr_entry != NULL );
+ Debug( LDAP_DEBUG_ANY, "%s syncprov_search_response: "
+ "bogus referral in context\n", op->o_log_prefix, 0, 0 );
+ return SLAP_CB_CONTINUE;
+ }
+ a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
+ if ( a == NULL && rs->sr_operational_attrs != NULL ) {
+ a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
+ }
+ if ( a ) {
+ int i, sid;
+ sid = slap_parse_csn_sid( &a->a_nvals[0] );
+
+ /* If not a persistent search */
+ if ( !ss->ss_so ) {
+ /* Make sure entry is less than the snapshot'd contextCSN */
+ for ( i=0; i<ss->ss_numcsns; i++ ) {
+ if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
+ &ss->ss_ctxcsn[i] ) > 0 ) {
+ Log4( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_search_response: "
+ "Entry %s CSN %s greater than snapshot %s\n",
+ op->o_log_prefix,
+ rs->sr_entry->e_name.bv_val,
+ a->a_nvals[0].bv_val,
+ ss->ss_ctxcsn[i].bv_val );
+ return LDAP_SUCCESS;
+ }
+ }
+ }
+
+ /* Don't send old entries twice */
+ if ( srs->sr_state.ctxcsn ) {
+ for ( i=0; i<srs->sr_state.numcsns; i++ ) {
+ if ( sid == srs->sr_state.sids[i] &&
+ ber_bvcmp( &a->a_nvals[0],
+ &srs->sr_state.ctxcsn[i] )<= 0 ) {
+ Log4( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_search_response: "
+ "Entry %s CSN %s older or equal to ctx %s\n",
+ op->o_log_prefix,
+ rs->sr_entry->e_name.bv_val,
+ a->a_nvals[0].bv_val,
+ srs->sr_state.ctxcsn[i].bv_val );
+ return LDAP_SUCCESS;
+ }
+ }
+ }
+ }
+ rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
+ op->o_tmpmemctx );
+ rs->sr_ctrls[1] = NULL;
+ rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
+ /* If we're in delta-sync mode, always send a cookie */
+ if ( si->si_nopres && si->si_usehint && a ) {
+ struct berval cookie;
+ slap_compose_sync_cookie( op, &cookie, a->a_nvals, srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
+ rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
+ LDAP_SYNC_ADD, rs->sr_ctrls, 0, 1, &cookie );
+ op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+ } else {
+ rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
+ LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
+ }
+ } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
+ struct berval cookie = BER_BVNULL;
+
+ if ( ( ss->ss_flags & SS_CHANGED ) &&
+ ss->ss_ctxcsn && !BER_BVISNULL( &ss->ss_ctxcsn[0] )) {
+ slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
+ srs->sr_state.rid, slap_serverID ? slap_serverID : -1 );
+
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_search_response: cookie=%s\n",
+ op->o_log_prefix, cookie.bv_val, 0 );
+ }
+
+ /* Is this a regular refresh?
+ * Note: refresh never gets here if there were no changes
+ */
+ if ( !ss->ss_so ) {
+ rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
+ op->o_tmpmemctx );
+ rs->sr_ctrls[1] = NULL;
+ rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
+ rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
+ 0, 1, &cookie, ( ss->ss_flags & SS_PRESENT ) ? LDAP_SYNC_REFRESH_PRESENTS :
+ LDAP_SYNC_REFRESH_DELETES );
+ op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+ } else {
+ /* It's RefreshAndPersist, transition to Persist phase */
+ syncprov_sendinfo( op, rs, ( ss->ss_flags & SS_PRESENT ) ?
+ LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
+ ( ss->ss_flags & SS_CHANGED ) ? &cookie : NULL,
+ 1, NULL, 0 );
+ if ( !BER_BVISNULL( &cookie ))
+ op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
+
+ /* Detach this Op from frontend control */
+ ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+
+ /* But not if this connection was closed along the way */
+ if ( op->o_abandon ) {
+ ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+ /* syncprov_ab_cleanup will free this syncop */
+ return SLAPD_ABANDON;
+
+ } else {
+ ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
+ /* Turn off the refreshing flag */
+ ss->ss_so->s_flags ^= PS_IS_REFRESHING;
+
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_search_response: "
+ "detaching op\n", op->o_log_prefix, 0, 0 );
+ syncprov_detach_op( op, ss->ss_so, on );
+
+ ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+
+ /* If there are queued responses, fire them off */
+ if ( ss->ss_so->s_res )
+ syncprov_qstart( ss->ss_so );
+ ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
+ }
+
+ return LDAP_SUCCESS;
+ }
+ }
+
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+syncprov_op_search( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+ slap_callback *cb;
+ int gotstate = 0, changed = 0, do_present = 0;
+ syncops *sop = NULL;
+ searchstate *ss;
+ sync_control *srs;
+ BerVarray ctxcsn;
+ int i, *sids, numcsns;
+ struct berval mincsn, maxcsn;
+ int minsid, maxsid;
+ int dirty = 0;
+
+ if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
+
+ if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
+ send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
+ return rs->sr_err;
+ }
+
+ srs = op->o_controls[slap_cids.sc_LDAPsync];
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_op_search: "
+ "got a %ssearch with a cookie=%s\n",
+ op->o_log_prefix,
+ op->o_sync_mode & SLAP_SYNC_PERSIST ? "persistent ": "",
+ srs->sr_state.octet_str.bv_val );
+
+ /* If this is a persistent search, set it up right away */
+ if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
+ syncops so = {0};
+ fbase_cookie fc;
+ opcookie opc;
+ slap_callback sc = {0};
+
+ fc.fss = &so;
+ fc.fbase = 0;
+ so.s_eid = NOID;
+ so.s_op = op;
+ so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
+ /* syncprov_findbase expects to be called as a callback... */
+ sc.sc_private = &opc;
+ opc.son = on;
+ ldap_pvt_thread_mutex_init( &so.s_mutex );
+ cb = op->o_callback;
+ op->o_callback = &sc;
+ rs->sr_err = syncprov_findbase( op, &fc );
+ op->o_callback = cb;
+ ldap_pvt_thread_mutex_destroy( &so.s_mutex );
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ send_ldap_result( op, rs );
+ return rs->sr_err;
+ }
+ sop = ch_malloc( sizeof( syncops ));
+ *sop = so;
+ sop->s_rid = srs->sr_state.rid;
+ sop->s_sid = srs->sr_state.sid;
+ /* set refcount=2 to prevent being freed out from under us
+ * by abandons that occur while we're running here
+ */
+ sop->s_inuse = 2;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ while ( si->si_active ) {
+ /* Wait for active mods to finish before proceeding, as they
+ * may already have inspected the si_ops list looking for
+ * consumers to replicate the change to. Using the log
+ * doesn't help, as we may finish playing it before the
+ * active mods gets added to it.
+ */
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ if ( slapd_shutdown ) {
+ ch_free( sop );
+ return SLAPD_ABANDON;
+ }
+ if ( !ldap_pvt_thread_pool_pausecheck( &connection_pool ))
+ ldap_pvt_thread_yield();
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ }
+ if ( op->o_abandon ) {
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ ch_free( sop );
+ return SLAPD_ABANDON;
+ }
+ ldap_pvt_thread_mutex_init( &sop->s_mutex );
+ sop->s_next = si->si_ops;
+ sop->s_si = si;
+ si->si_ops = sop;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_op_search: "
+ "registered persistent search\n", op->o_log_prefix, 0, 0 );
+ }
+
+ /* snapshot the ctxcsn
+ * Note: this must not be done before the psearch setup. (ITS#8365)
+ */
+ ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
+ numcsns = si->si_numcsns;
+ if ( numcsns ) {
+ ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
+ sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
+ for ( i=0; i<numcsns; i++ )
+ sids[i] = si->si_sids[i];
+ } else {
+ ctxcsn = NULL;
+ sids = NULL;
+ }
+ dirty = si->si_dirty;
+ ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
+
+ /* If we have a cookie, handle the PRESENT lookups */
+ if ( srs->sr_state.ctxcsn ) {
+ sessionlog *sl;
+ int i, j;
+
+ /* If we don't have any CSN of our own yet, bail out.
+ */
+ if ( !numcsns ) {
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ rs->sr_text = "consumer has state info but provider doesn't!";
+ goto bailout;
+ }
+
+ if ( !si->si_nopres )
+ do_present = SS_PRESENT;
+
+ /* If there are SIDs we don't recognize in the cookie, drop them */
+ for (i=0; i<srs->sr_state.numcsns; ) {
+ for (j=i; j<numcsns; j++) {
+ if ( srs->sr_state.sids[i] <= sids[j] ) {
+ break;
+ }
+ }
+ /* not found */
+ if ( j == numcsns || srs->sr_state.sids[i] != sids[j] ) {
+ char *tmp = srs->sr_state.ctxcsn[i].bv_val;
+ srs->sr_state.numcsns--;
+ for ( j=i; j<srs->sr_state.numcsns; j++ ) {
+ srs->sr_state.ctxcsn[j] = srs->sr_state.ctxcsn[j+1];
+ srs->sr_state.sids[j] = srs->sr_state.sids[j+1];
+ }
+ srs->sr_state.ctxcsn[j].bv_val = tmp;
+ srs->sr_state.ctxcsn[j].bv_len = 0;
+ continue;
+ }
+ i++;
+ }
+
+ if (srs->sr_state.numcsns != numcsns) {
+ /* consumer doesn't have the right number of CSNs */
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_op_search: "
+ "consumer cookie is missing a csn we track\n",
+ op->o_log_prefix, 0, 0 );
+ changed = SS_CHANGED;
+ if ( srs->sr_state.ctxcsn ) {
+ ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
+ srs->sr_state.ctxcsn = NULL;
+ }
+ if ( srs->sr_state.sids ) {
+ slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
+ srs->sr_state.sids = NULL;
+ }
+ srs->sr_state.numcsns = 0;
+ goto shortcut;
+ }
+
+ /* Find the smallest CSN which differs from contextCSN */
+ mincsn.bv_len = 0;
+ maxcsn.bv_len = 0;
+ for ( i=0,j=0; i<srs->sr_state.numcsns; i++ ) {
+ int newer;
+ while ( srs->sr_state.sids[i] != sids[j] ) j++;
+ if ( BER_BVISEMPTY( &maxcsn ) || ber_bvcmp( &maxcsn,
+ &srs->sr_state.ctxcsn[i] ) < 0 ) {
+ maxcsn = srs->sr_state.ctxcsn[i];
+ maxsid = sids[j];
+ }
+ newer = ber_bvcmp( &srs->sr_state.ctxcsn[i], &ctxcsn[j] );
+ /* If our state is newer, tell consumer about changes */
+ if ( newer < 0) {
+ changed = SS_CHANGED;
+ if ( BER_BVISEMPTY( &mincsn ) || ber_bvcmp( &mincsn,
+ &srs->sr_state.ctxcsn[i] ) > 0 ) {
+ mincsn = srs->sr_state.ctxcsn[i];
+ minsid = sids[j];
+ }
+ } else if ( newer > 0 && sids[j] == slap_serverID ) {
+ /* our state is older, complain to consumer */
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ rs->sr_text = "consumer state is newer than provider!";
+ Log5( LDAP_DEBUG_SYNC, ldap_syslog_level, "%s syncprov_op_search: "
+ "consumer %d state %s is newer than provider %d state %s\n",
+ op->o_log_prefix, sids[i], srs->sr_state.ctxcsn[i].bv_val,
+ sids[j], /* == slap_serverID */
+ ctxcsn[j].bv_val);
+bailout:
+ if ( sop ) {
+ syncops **sp = &si->si_ops;
+
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ while ( *sp != sop )
+ sp = &(*sp)->s_next;
+ *sp = sop->s_next;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ ch_free( sop );
+ }
+ rs->sr_ctrls = NULL;
+ send_ldap_result( op, rs );
+ return rs->sr_err;
+ }
+ }
+ if ( BER_BVISEMPTY( &mincsn )) {
+ mincsn = maxcsn;
+ minsid = maxsid;
+ }
+
+ /* If nothing has changed, shortcut it */
+ if ( !changed && !dirty ) {
+ do_present = 0;
+no_change: if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
+ LDAPControl *ctrls[2];
+
+ ctrls[0] = NULL;
+ ctrls[1] = NULL;
+ syncprov_done_ctrl( op, rs, ctrls, 0, 0,
+ NULL, LDAP_SYNC_REFRESH_DELETES );
+ rs->sr_ctrls = ctrls;
+ rs->sr_err = LDAP_SUCCESS;
+ send_ldap_result( op, rs );
+ rs->sr_ctrls = NULL;
+ return rs->sr_err;
+ }
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_op_search: "
+ "no change, skipping log replay\n",
+ op->o_log_prefix, 0, 0 );
+ goto shortcut;
+ }
+
+ /* Do we have a sessionlog for this search? */
+ sl=si->si_logs;
+ if ( sl ) {
+ int do_play = 0;
+ ldap_pvt_thread_rdwr_wlock( &sl->sl_mutex );
+ /* Are there any log entries, and is the consumer state
+ * present in the session log?
+ */
+ if ( sl->sl_num > 0 ) {
+ int i;
+ for ( i=0; i<sl->sl_numcsns; i++ ) {
+ /* SID not present == new enough */
+ if ( minsid < sl->sl_sids[i] ) {
+ do_play = 1;
+ break;
+ }
+ /* SID present */
+ if ( minsid == sl->sl_sids[i] ) {
+ /* new enough? */
+ if ( ber_bvcmp( &mincsn, &sl->sl_mincsn[i] ) >= 0 )
+ do_play = 1;
+ break;
+ }
+ }
+ /* SID not present == new enough */
+ if ( i == sl->sl_numcsns )
+ do_play = 1;
+ }
+ if ( do_play ) {
+ do_present = 0;
+ /* mutex is unlocked in playlog */
+ syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids, &mincsn );
+ } else {
+ ldap_pvt_thread_rdwr_wunlock( &sl->sl_mutex );
+ }
+ }
+ /* Is the CSN still present in the database? */
+ if ( syncprov_findcsn( op, FIND_CSN, &mincsn ) != LDAP_SUCCESS ) {
+ /* No, so a reload is required */
+ /* the 2.2 consumer doesn't send this hint */
+ if ( si->si_usehint && srs->sr_rhint == 0 ) {
+ if ( ctxcsn )
+ ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
+ if ( sids )
+ op->o_tmpfree( sids, op->o_tmpmemctx );
+ rs->sr_err = LDAP_SYNC_REFRESH_REQUIRED;
+ rs->sr_text = "sync cookie is stale";
+ goto bailout;
+ }
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_op_search: "
+ "failed to find entry with csn=%s, ignoring cookie\n",
+ op->o_log_prefix, mincsn.bv_val, 0 );
+ if ( srs->sr_state.ctxcsn ) {
+ ber_bvarray_free_x( srs->sr_state.ctxcsn, op->o_tmpmemctx );
+ srs->sr_state.ctxcsn = NULL;
+ }
+ if ( srs->sr_state.sids ) {
+ slap_sl_free( srs->sr_state.sids, op->o_tmpmemctx );
+ srs->sr_state.sids = NULL;
+ }
+ srs->sr_state.numcsns = 0;
+ } else {
+ gotstate = 1;
+ /* If changed and doing Present lookup, send Present UUIDs */
+ if ( do_present && syncprov_findcsn( op, FIND_PRESENT, 0 ) !=
+ LDAP_SUCCESS ) {
+ if ( ctxcsn )
+ ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
+ if ( sids )
+ op->o_tmpfree( sids, op->o_tmpmemctx );
+ goto bailout;
+ }
+ }
+ } else {
+ /* The consumer knows nothing, we know nothing. OK. */
+ if (!numcsns)
+ goto no_change;
+ /* No consumer state, assume something has changed */
+ changed = SS_CHANGED;
+ }
+
+shortcut:
+ /* Append CSN range to search filter, save original filter
+ * for persistent search evaluation
+ */
+ if ( sop ) {
+ ldap_pvt_thread_mutex_lock( &sop->s_mutex );
+ sop->s_filterstr = op->ors_filterstr;
+ /* correct the refcount that was set to 2 before */
+ sop->s_inuse--;
+ }
+
+ /* If something changed, find the changes */
+ if ( gotstate && ( changed || dirty ) ) {
+ Filter *fand, *fava;
+
+ fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ fand->f_choice = LDAP_FILTER_AND;
+ fand->f_next = NULL;
+ fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
+ fand->f_and = fava;
+ fava->f_choice = LDAP_FILTER_GE;
+ fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
+ fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
+#ifdef LDAP_COMP_MATCH
+ fava->f_ava->aa_cf = NULL;
+#endif
+ ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
+ fava->f_next = op->ors_filter;
+ op->ors_filter = fand;
+ filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
+ if ( sop ) {
+ sop->s_flags |= PS_FIX_FILTER;
+ }
+ }
+ if ( sop ) {
+ ldap_pvt_thread_mutex_unlock( &sop->s_mutex );
+ }
+
+ /* Let our callback add needed info to returned entries */
+ cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
+ ss = (searchstate *)(cb+1);
+ ss->ss_on = on;
+ ss->ss_so = sop;
+ ss->ss_flags = do_present | changed;
+ ss->ss_ctxcsn = ctxcsn;
+ ss->ss_numcsns = numcsns;
+ ss->ss_sids = sids;
+ cb->sc_response = syncprov_search_response;
+ cb->sc_private = ss;
+ cb->sc_next = op->o_callback;
+ op->o_callback = cb;
+
+ /* If this is a persistent search and no changes were reported during
+ * the refresh phase, just invoke the response callback to transition
+ * us into persist phase
+ */
+ if ( !changed && !dirty ) {
+ Debug( LDAP_DEBUG_SYNC, "%s syncprov_op_search: "
+ "nothing changed, finishing up initial search early\n",
+ op->o_log_prefix, 0, 0 );
+ rs->sr_err = LDAP_SUCCESS;
+ rs->sr_nentries = 0;
+ send_ldap_result( op, rs );
+ return rs->sr_err;
+ }
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+syncprov_operational(
+ Operation *op,
+ SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+
+ /* This prevents generating unnecessarily; frontend will strip
+ * any statically stored copy.
+ */
+ if ( op->o_sync != SLAP_CONTROL_NONE )
+ return SLAP_CB_CONTINUE;
+
+ if ( rs->sr_entry &&
+ dn_match( &rs->sr_entry->e_nname, &si->si_contextdn )) {
+
+ if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
+ ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
+ Attribute *a, **ap = NULL;
+
+ for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
+ if ( a->a_desc == slap_schema.si_ad_contextCSN )
+ break;
+ }
+
+ ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
+ if ( si->si_ctxcsn ) {
+ if ( !a ) {
+ for ( ap = &rs->sr_operational_attrs; *ap;
+ ap=&(*ap)->a_next );
+
+ a = attr_alloc( slap_schema.si_ad_contextCSN );
+ *ap = a;
+ }
+
+ if ( !ap ) {
+ if ( rs_entry2modifiable( op, rs, on )) {
+ a = attr_find( rs->sr_entry->e_attrs,
+ slap_schema.si_ad_contextCSN );
+ }
+ if ( a->a_nvals != a->a_vals ) {
+ ber_bvarray_free( a->a_nvals );
+ }
+ a->a_nvals = NULL;
+ ber_bvarray_free( a->a_vals );
+ a->a_vals = NULL;
+ a->a_numvals = 0;
+ }
+ attr_valadd( a, si->si_ctxcsn, si->si_ctxcsn, si->si_numcsns );
+ }
+ ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
+ }
+ }
+ return SLAP_CB_CONTINUE;
+}
+
+enum {
+ SP_CHKPT = 1,
+ SP_SESSL,
+ SP_NOPRES,
+ SP_USEHINT
+};
+
+static ConfigDriver sp_cf_gen;
+
+static ConfigTable spcfg[] = {
+ { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
+ sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
+ "DESC 'ContextCSN checkpoint interval in ops and minutes' "
+ "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
+ { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
+ sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
+ "DESC 'Session log size in ops' "
+ "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
+ { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
+ sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
+ "DESC 'Omit Present phase processing' "
+ "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
+ { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
+ sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
+ "DESC 'Observe Reload Hint in Request control' "
+ "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
+ { NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs spocs[] = {
+ { "( OLcfgOvOc:1.1 "
+ "NAME 'olcSyncProvConfig' "
+ "DESC 'SyncRepl Provider configuration' "
+ "SUP olcOverlayConfig "
+ "MAY ( olcSpCheckpoint "
+ "$ olcSpSessionlog "
+ "$ olcSpNoPresent "
+ "$ olcSpReloadHint "
+ ") )",
+ Cft_Overlay, spcfg },
+ { NULL, 0, NULL }
+};
+
+static int
+sp_cf_gen(ConfigArgs *c)
+{
+ slap_overinst *on = (slap_overinst *)c->bi;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+ int rc = 0;
+
+ if ( c->op == SLAP_CONFIG_EMIT ) {
+ switch ( c->type ) {
+ case SP_CHKPT:
+ if ( si->si_chkops || si->si_chktime ) {
+ struct berval bv;
+ /* we assume si_chktime is a multiple of 60
+ * because the parsed value was originally
+ * multiplied by 60 */
+ bv.bv_len = snprintf( c->cr_msg, sizeof( c->cr_msg ),
+ "%d %d", si->si_chkops, si->si_chktime/60 );
+ if ( bv.bv_len >= sizeof( c->cr_msg ) ) {
+ rc = 1;
+ } else {
+ bv.bv_val = c->cr_msg;
+ value_add_one( &c->rvalue_vals, &bv );
+ }
+ } else {
+ rc = 1;
+ }
+ break;
+ case SP_SESSL:
+ if ( si->si_logs ) {
+ c->value_int = si->si_logs->sl_size;
+ } else {
+ rc = 1;
+ }
+ break;
+ case SP_NOPRES:
+ if ( si->si_nopres ) {
+ c->value_int = 1;
+ } else {
+ rc = 1;
+ }
+ break;
+ case SP_USEHINT:
+ if ( si->si_usehint ) {
+ c->value_int = 1;
+ } else {
+ rc = 1;
+ }
+ break;
+ }
+ return rc;
+ } else if ( c->op == LDAP_MOD_DELETE ) {
+ switch ( c->type ) {
+ case SP_CHKPT:
+ si->si_chkops = 0;
+ si->si_chktime = 0;
+ break;
+ case SP_SESSL:
+ si->si_logs->sl_size = 0;
+ break;
+ case SP_NOPRES:
+ si->si_nopres = 0;
+ break;
+ case SP_USEHINT:
+ si->si_usehint = 0;
+ break;
+ }
+ return rc;
+ }
+ switch ( c->type ) {
+ case SP_CHKPT:
+ if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint ops # \"%s\"",
+ c->argv[0], c->argv[1] );
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
+ "%s: %s\n", c->log, c->cr_msg, 0 );
+ return ARG_BAD_CONF;
+ }
+ if ( si->si_chkops <= 0 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint ops # \"%d\"",
+ c->argv[0], si->si_chkops );
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
+ "%s: %s\n", c->log, c->cr_msg, 0 );
+ return ARG_BAD_CONF;
+ }
+ if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s unable to parse checkpoint time \"%s\"",
+ c->argv[0], c->argv[1] );
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
+ "%s: %s\n", c->log, c->cr_msg, 0 );
+ return ARG_BAD_CONF;
+ }
+ if ( si->si_chktime <= 0 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s invalid checkpoint time \"%d\"",
+ c->argv[0], si->si_chkops );
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
+ "%s: %s\n", c->log, c->cr_msg, 0 );
+ return ARG_BAD_CONF;
+ }
+ si->si_chktime *= 60;
+ break;
+ case SP_SESSL: {
+ sessionlog *sl;
+ int size = c->value_int;
+
+ if ( size < 0 ) {
+ snprintf( c->cr_msg, sizeof( c->cr_msg ), "%s size %d is negative",
+ c->argv[0], size );
+ Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
+ "%s: %s\n", c->log, c->cr_msg, 0 );
+ return ARG_BAD_CONF;
+ }
+ sl = si->si_logs;
+ if ( !sl ) {
+ sl = ch_calloc( 1, sizeof( sessionlog ));
+ ldap_pvt_thread_rdwr_init( &sl->sl_mutex );
+ si->si_logs = sl;
+ }
+ sl->sl_size = size;
+ }
+ break;
+ case SP_NOPRES:
+ si->si_nopres = c->value_int;
+ break;
+ case SP_USEHINT:
+ si->si_usehint = c->value_int;
+ break;
+ }
+ return rc;
+}
+
+/* ITS#3456 we cannot run this search on the main thread, must use a
+ * child thread in order to insure we have a big enough stack.
+ */
+static void *
+syncprov_db_otask(
+ void *ptr
+)
+{
+ syncprov_findcsn( ptr, FIND_MAXCSN, 0 );
+ return NULL;
+}
+
+static int
+syncprov_db_ocallback(
+ Operation *op,
+ SlapReply *rs
+)
+{
+ if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
+ if ( rs->sr_entry->e_name.bv_len )
+ op->o_callback->sc_private = (void *)1;
+ }
+ return LDAP_SUCCESS;
+}
+
+/* ITS#9015 see if the DB is really empty */
+static void *
+syncprov_db_otask2(
+ void *ptr
+)
+{
+ Operation *op = ptr;
+ SlapReply rs = {REP_RESULT};
+ slap_callback cb = {0};
+ int rc;
+
+ cb.sc_response = syncprov_db_ocallback;
+
+ op->o_managedsait = SLAP_CONTROL_CRITICAL;
+ op->o_callback = &cb;
+ op->o_tag = LDAP_REQ_SEARCH;
+ op->ors_scope = LDAP_SCOPE_SUBTREE;
+ op->ors_limit = NULL;
+ op->ors_slimit = 1;
+ op->ors_tlimit = SLAP_NO_LIMIT;
+ op->ors_attrs = slap_anlist_no_attrs;
+ op->ors_attrsonly = 1;
+ op->ors_deref = LDAP_DEREF_NEVER;
+ op->ors_filter = &generic_filter;
+ op->ors_filterstr = generic_filterstr;
+ rc = op->o_bd->be_search( op, &rs );
+ if ( rc == LDAP_SIZELIMIT_EXCEEDED || cb.sc_private )
+ op->ors_slimit = 2;
+ return NULL;
+}
+
+/* Read any existing contextCSN from the underlying db.
+ * Then search for any entries newer than that. If no value exists,
+ * just generate it. Cache whatever result.
+ */
+static int
+syncprov_db_open(
+ BackendDB *be,
+ ConfigReply *cr
+)
+{
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+
+ Connection conn = { 0 };
+ OperationBuffer opbuf;
+ Operation *op;
+ Entry *e = NULL;
+ Attribute *a;
+ int rc;
+ void *thrctx = NULL;
+
+ if ( !SLAP_LASTMOD( be )) {
+ Debug( LDAP_DEBUG_ANY,
+ "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
+ return -1;
+ }
+
+ if ( slapMode & SLAP_TOOL_MODE ) {
+ return 0;
+ }
+
+ rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
+ if ( rc ) {
+ return rc;
+ }
+
+ Debug( LDAP_DEBUG_SYNC, "syncprov_db_open: "
+ "starting syncprov for suffix %s\n",
+ be->be_suffix[0].bv_val, 0, 0 );
+
+ thrctx = ldap_pvt_thread_pool_context();
+ connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+ op = &opbuf.ob_op;
+ op->o_bd = be;
+ op->o_dn = be->be_rootdn;
+ op->o_ndn = be->be_rootndn;
+
+ if ( SLAP_SYNC_SUBENTRY( be )) {
+ build_new_dn( &si->si_contextdn, be->be_nsuffix,
+ (struct berval *)&slap_ldapsync_cn_bv, NULL );
+ } else {
+ si->si_contextdn = be->be_nsuffix[0];
+ }
+ rc = overlay_entry_get_ov( op, &si->si_contextdn, NULL,
+ slap_schema.si_ad_contextCSN, 0, &e, on );
+
+ if ( e ) {
+ ldap_pvt_thread_t tid;
+
+ a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
+ if ( a ) {
+ ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
+ si->si_numcsns = a->a_numvals;
+ si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, a->a_numvals, NULL );
+ slap_sort_csn_sids( si->si_ctxcsn, si->si_sids, si->si_numcsns, NULL );
+ }
+ overlay_entry_release_ov( op, e, 0, on );
+ if ( si->si_ctxcsn && !SLAP_DBCLEAN( be )) {
+ op->o_tag = LDAP_REQ_SEARCH;
+ op->o_req_dn = be->be_suffix[0];
+ op->o_req_ndn = be->be_nsuffix[0];
+ op->ors_scope = LDAP_SCOPE_SUBTREE;
+ ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
+ ldap_pvt_thread_join( tid, NULL );
+ }
+ }
+
+ /* Didn't find a contextCSN, should we generate one? */
+ if ( !si->si_ctxcsn ) {
+ char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ];
+ struct berval csn;
+
+ if ( SLAP_SINGLE_SHADOW( op->o_bd ) ) {
+ /* Not in charge of this serverID, don't generate anything. */
+ goto out;
+ }
+ if ( !SLAP_SYNC_SUBENTRY( be ) && rc != LDAP_SUCCESS
+ && rc != LDAP_NO_SUCH_ATTRIBUTE ) {
+ /* If the DB is genuinely empty, don't generate one either. */
+ goto out;
+ }
+ if ( !si->si_contextdn.bv_len ) {
+ ldap_pvt_thread_t tid;
+ /* a glue entry here with no contextCSN might mean an empty DB.
+ * we need to search for children, to be sure.
+ */
+ op->o_req_dn = be->be_suffix[0];
+ op->o_req_ndn = be->be_nsuffix[0];
+ op->o_bd->bd_info = (BackendInfo *)on->on_info;
+ ldap_pvt_thread_create( &tid, 0, syncprov_db_otask2, op );
+ ldap_pvt_thread_join( tid, NULL );
+ if ( op->ors_slimit == 1 )
+ goto out;
+ }
+
+ csn.bv_val = csnbuf;
+ csn.bv_len = sizeof( csnbuf );
+ slap_get_csn( op, &csn, 0 );
+ value_add_one( &si->si_ctxcsn, &csn );
+ si->si_numcsns = 1;
+ si->si_sids = ch_malloc( sizeof(int) );
+ si->si_sids[0] = slap_serverID;
+ Debug( LDAP_DEBUG_SYNC, "syncprov_db_open: "
+ "generated a new ctxcsn=%s for suffix %s\n",
+ csn.bv_val, be->be_suffix[0].bv_val, 0 );
+
+ /* make sure we do a checkpoint on close */
+ si->si_numops++;
+ }
+
+ /* Initialize the sessionlog mincsn */
+ if ( si->si_logs && si->si_numcsns ) {
+ sessionlog *sl = si->si_logs;
+ int i;
+ ber_bvarray_dup_x( &sl->sl_mincsn, si->si_ctxcsn, NULL );
+ sl->sl_numcsns = si->si_numcsns;
+ sl->sl_sids = ch_malloc( si->si_numcsns * sizeof(int) );
+ for ( i=0; i < si->si_numcsns; i++ )
+ sl->sl_sids[i] = si->si_sids[i];
+ }
+
+out:
+ op->o_bd->bd_info = (BackendInfo *)on;
+ return 0;
+}
+
+/* Write the current contextCSN into the underlying db.
+ */
+static int
+syncprov_db_close(
+ BackendDB *be,
+ ConfigReply *cr
+)
+{
+ slap_overinst *on = (slap_overinst *) be->bd_info;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+#ifdef SLAP_CONFIG_DELETE
+ syncops *so, *sonext;
+#endif /* SLAP_CONFIG_DELETE */
+
+ if ( slapMode & SLAP_TOOL_MODE ) {
+ return 0;
+ }
+ if ( si->si_numops ) {
+ Connection conn = {0};
+ OperationBuffer opbuf;
+ Operation *op;
+ void *thrctx;
+
+ thrctx = ldap_pvt_thread_pool_context();
+ connection_fake_init2( &conn, &opbuf, thrctx, 0 );
+ op = &opbuf.ob_op;
+ op->o_bd = be;
+ op->o_dn = be->be_rootdn;
+ op->o_ndn = be->be_rootndn;
+ syncprov_checkpoint( op, on );
+ }
+
+#ifdef SLAP_CONFIG_DELETE
+ if ( !slapd_shutdown ) {
+ ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
+ for ( so=si->si_ops, sonext=so; so; so=sonext ) {
+ SlapReply rs = {REP_RESULT};
+ rs.sr_err = LDAP_UNAVAILABLE;
+ send_ldap_result( so->s_op, &rs );
+ sonext=so->s_next;
+ syncprov_drop_psearch( so, 0);
+ }
+ si->si_ops=NULL;
+ ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
+ }
+ overlay_unregister_control( be, LDAP_CONTROL_SYNC );
+#endif /* SLAP_CONFIG_DELETE */
+
+ return 0;
+}
+
+static int
+syncprov_db_init(
+ BackendDB *be,
+ ConfigReply *cr
+)
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ syncprov_info_t *si;
+
+ if ( SLAP_ISGLOBALOVERLAY( be ) ) {
+ Debug( LDAP_DEBUG_ANY,
+ "syncprov must be instantiated within a database.\n",
+ 0, 0, 0 );
+ return 1;
+ }
+
+ si = ch_calloc(1, sizeof(syncprov_info_t));
+ on->on_bi.bi_private = si;
+ ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
+ ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
+ ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
+ ldap_pvt_thread_mutex_init( &si->si_resp_mutex );
+
+ csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
+ csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
+ csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
+ csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
+
+ uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
+ uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
+
+ return 0;
+}
+
+static int
+syncprov_db_destroy(
+ BackendDB *be,
+ ConfigReply *cr
+)
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
+
+ if ( si ) {
+ if ( si->si_logs ) {
+ sessionlog *sl = si->si_logs;
+
+ tavl_free( sl->sl_entries, (AVL_FREE)ch_free );
+ if ( sl->sl_mincsn )
+ ber_bvarray_free( sl->sl_mincsn );
+ if ( sl->sl_sids )
+ ch_free( sl->sl_sids );
+
+ ldap_pvt_thread_rdwr_destroy(&si->si_logs->sl_mutex);
+ ch_free( si->si_logs );
+ }
+ if ( si->si_ctxcsn )
+ ber_bvarray_free( si->si_ctxcsn );
+ if ( si->si_sids )
+ ch_free( si->si_sids );
+ ldap_pvt_thread_mutex_destroy( &si->si_resp_mutex );
+ ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
+ ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
+ ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
+ ch_free( si );
+ }
+
+ return 0;
+}
+
+static int syncprov_parseCtrl (
+ Operation *op,
+ SlapReply *rs,
+ LDAPControl *ctrl )
+{
+ ber_tag_t tag;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ ber_int_t mode;
+ ber_len_t len;
+ struct berval cookie = BER_BVNULL;
+ sync_control *sr;
+ int rhint = 0;
+
+ if ( op->o_sync != SLAP_CONTROL_NONE ) {
+ rs->sr_text = "Sync control specified multiple times";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
+ rs->sr_text = "Sync control specified with pagedResults control";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
+ rs->sr_text = "Sync control value is absent";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
+ rs->sr_text = "Sync control value is empty";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ /* Parse the control value
+ * syncRequestValue ::= SEQUENCE {
+ * mode ENUMERATED {
+ * -- 0 unused
+ * refreshOnly (1),
+ * -- 2 reserved
+ * refreshAndPersist (3)
+ * },
+ * cookie syncCookie OPTIONAL
+ * }
+ */
+
+ ber_init2( ber, &ctrl->ldctl_value, 0 );
+
+ if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
+ rs->sr_text = "Sync control : mode decoding error";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ switch( mode ) {
+ case LDAP_SYNC_REFRESH_ONLY:
+ mode = SLAP_SYNC_REFRESH;
+ break;
+ case LDAP_SYNC_REFRESH_AND_PERSIST:
+ mode = SLAP_SYNC_REFRESH_AND_PERSIST;
+ break;
+ default:
+ rs->sr_text = "Sync control : unknown update mode";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ tag = ber_peek_tag( ber, &len );
+
+ if ( tag == LDAP_TAG_SYNC_COOKIE ) {
+ if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
+ rs->sr_text = "Sync control : cookie decoding error";
+ return LDAP_PROTOCOL_ERROR;
+ }
+ tag = ber_peek_tag( ber, &len );
+ }
+ if ( tag == LDAP_TAG_RELOAD_HINT ) {
+ if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
+ rs->sr_text = "Sync control : rhint decoding error";
+ return LDAP_PROTOCOL_ERROR;
+ }
+ }
+ if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
+ rs->sr_text = "Sync control : decoding error";
+ return LDAP_PROTOCOL_ERROR;
+ }
+ sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
+ sr->sr_rhint = rhint;
+ if (!BER_BVISNULL(&cookie)) {
+ ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
+ /* If parse fails, pretend no cookie was sent */
+ if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
+ sr->sr_state.rid == -1 ) {
+ if ( sr->sr_state.ctxcsn ) {
+ ber_bvarray_free_x( sr->sr_state.ctxcsn, op->o_tmpmemctx );
+ sr->sr_state.ctxcsn = NULL;
+ }
+ sr->sr_state.numcsns = 0;
+ }
+ }
+
+ op->o_controls[slap_cids.sc_LDAPsync] = sr;
+
+ op->o_sync = ctrl->ldctl_iscritical
+ ? SLAP_CONTROL_CRITICAL
+ : SLAP_CONTROL_NONCRITICAL;
+
+ op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
+
+ return LDAP_SUCCESS;
+}
+
+/* This overlay is set up for dynamic loading via moduleload. For static
+ * configuration, you'll need to arrange for the slap_overinst to be
+ * initialized and registered by some other function inside slapd.
+ */
+
+static slap_overinst syncprov;
+
+int
+syncprov_initialize()
+{
+ int rc;
+
+ rc = register_supported_control( LDAP_CONTROL_SYNC,
+ SLAP_CTRL_SEARCH, NULL,
+ syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
+ if ( rc != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY,
+ "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
+ return rc;
+ }
+
+ syncprov.on_bi.bi_type = "syncprov";
+ syncprov.on_bi.bi_db_init = syncprov_db_init;
+ syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
+ syncprov.on_bi.bi_db_open = syncprov_db_open;
+ syncprov.on_bi.bi_db_close = syncprov_db_close;
+
+ syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
+ syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
+
+ syncprov.on_bi.bi_op_add = syncprov_op_mod;
+ syncprov.on_bi.bi_op_compare = syncprov_op_compare;
+ syncprov.on_bi.bi_op_delete = syncprov_op_mod;
+ syncprov.on_bi.bi_op_modify = syncprov_op_mod;
+ syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
+ syncprov.on_bi.bi_op_search = syncprov_op_search;
+ syncprov.on_bi.bi_extended = syncprov_op_extended;
+ syncprov.on_bi.bi_operational = syncprov_operational;
+
+ syncprov.on_bi.bi_cf_ocs = spocs;
+
+ generic_filter.f_desc = slap_schema.si_ad_objectClass;
+
+ rc = config_register_schema( spcfg, spocs );
+ if ( rc ) return rc;
+
+ return overlay_register( &syncprov );
+}
+
+#if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
+int
+init_module( int argc, char *argv[] )
+{
+ return syncprov_initialize();
+}
+#endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
+
+#endif /* defined(SLAPD_OVER_SYNCPROV) */