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|
/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* License: GPL (version 3 or any later version).
* See LICENSE for details.
* END COPYRIGHT BLOCK **/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* repl5_protocol_util.c */
/*
Code common to both incremental and total protocols.
*/
#include "repl5.h"
#include "repl5_prot_private.h"
/*
* Obtain a current CSN (e.g. one that would have been
* generated for an operation occurring at this time)
* for a given replica.
*/
CSN *
get_current_csn(Slapi_DN *replarea_sdn)
{
Replica *replica;
Object *gen_obj;
CSNGen *gen;
CSN *current_csn = NULL;
if (NULL != replarea_sdn) {
replica = replica_get_replica_from_dn(replarea_sdn);
if (NULL != replica) {
gen_obj = replica_get_csngen(replica);
if (NULL != gen_obj) {
gen = (CSNGen *)object_get_data(gen_obj);
if (NULL != gen) {
if (csngen_new_csn(gen, ¤t_csn,
PR_FALSE /* notify */) != CSN_SUCCESS) {
csn_free(¤t_csn);
}
object_release(gen_obj);
}
}
}
}
return current_csn;
}
/*
* Acquire exclusive access to a replica. Send a start replication extended
* operation to the replica. The response will contain a success code, and
* optionally the replica's update vector if acquisition is successful.
* This function returns one of the following:
* ACQUIRE_SUCCESS - the replica was acquired, and we have exclusive update access
* ACQUIRE_REPLICA_BUSY - another supplier was updating the replica
* ACQUIRE_FATAL_ERROR - something bad happened, and it's not likely to improve
* if we wait.
* ACQUIRE_TRANSIENT_ERROR - something bad happened, but it's probably worth
* another try after waiting a while.
* If ACQUIRE_SUCCESS is returned, then ruv will point to the replica's update
* vector. It's possible that the replica does something goofy and doesn't
* return us an update vector, so be prepared for ruv to be NULL (but this is
* an error).
*/
int
acquire_replica(Private_Repl_Protocol *prp, char *prot_oid, RUV **ruv)
{
int return_value;
ConnResult crc;
Repl_Connection *conn;
struct berval *retdata = NULL;
char *retoid = NULL;
Slapi_DN *replarea_sdn = NULL;
struct berval **ruv_bervals = NULL;
CSN *current_csn = NULL;
PR_ASSERT(prp && prot_oid);
if (prp->replica_acquired) /* we already acquire replica */
{
slapi_log_err(SLAPI_LOG_WARNING, repl_plugin_name,
"acquire_replica - %s: Remote replica already acquired\n",
agmt_get_long_name(prp->agmt));
return_value = ACQUIRE_FATAL_ERROR;
return ACQUIRE_SUCCESS;
}
if (NULL != ruv) {
ruv_destroy(ruv);
}
if (strcmp(prot_oid, REPL_NSDS50_INCREMENTAL_PROTOCOL_OID) == 0) {
Object *supl_ruv_obj, *cons_ruv_obj;
PRBool is_newer = PR_FALSE;
supl_ruv_obj = replica_get_ruv(prp->replica);
cons_ruv_obj = agmt_get_consumer_ruv(prp->agmt);
is_newer = ruv_is_newer(supl_ruv_obj, cons_ruv_obj);
if (supl_ruv_obj)
object_release(supl_ruv_obj);
if (cons_ruv_obj)
object_release(cons_ruv_obj);
if (is_newer == PR_FALSE) {
prp->last_acquire_response_code = NSDS50_REPL_UPTODATE;
return ACQUIRE_CONSUMER_WAS_UPTODATE;
}
}
prp->last_acquire_response_code = NSDS50_REPL_REPLICA_NO_RESPONSE;
/* Get the connection */
conn = prp->conn;
crc = conn_connect(conn);
if (CONN_OPERATION_FAILED == crc) {
int operation, error;
conn_get_error(conn, &operation, &error);
agmt_set_last_update_status(prp->agmt, error, NSDS50_REPL_CONN_ERROR,
"Problem connecting to replica");
return_value = ACQUIRE_TRANSIENT_ERROR;
} else if (CONN_SSL_NOT_ENABLED == crc) {
int operation, error;
conn_get_error(conn, &operation, &error);
agmt_set_last_update_status(prp->agmt, error, NSDS50_REPL_CONN_ERROR,
"Problem connecting to replica (SSL not enabled)");
return_value = ACQUIRE_FATAL_ERROR;
} else {
/* we don't want the timer to go off in the middle of an operation */
conn_cancel_linger(conn);
/* Does the remote replica support the 5.0 protocol? */
crc = conn_replica_supports_ds5_repl(conn);
if (CONN_DOES_NOT_SUPPORT_DS5_REPL == crc) {
return_value = ACQUIRE_FATAL_ERROR;
} else if (CONN_NOT_CONNECTED == crc || CONN_OPERATION_FAILED == crc) {
/* We don't know anything about the remote replica. Try again later. */
return_value = ACQUIRE_TRANSIENT_ERROR;
goto error;
}
/* Find out what level of replication the replica supports. */
crc = conn_replica_supports_ds90_repl(conn);
if (CONN_DOES_NOT_SUPPORT_DS90_REPL == crc) {
/* Does the remote replica support the 7.1 protocol? */
crc = conn_replica_supports_ds71_repl(conn);
if (CONN_DOES_NOT_SUPPORT_DS71_REPL == crc) {
/* This is a pre-7.1 replica. */
prp->repl50consumer = 1;
} else if (CONN_NOT_CONNECTED == crc || CONN_OPERATION_FAILED == crc) {
/* We don't know anything about the remote replica. Try again later. */
return_value = ACQUIRE_TRANSIENT_ERROR;
goto error;
} else {
/* This replica is later than 7.1, but pre-9.0. */
prp->repl71consumer = 1;
}
} else if (CONN_NOT_CONNECTED == crc || CONN_OPERATION_FAILED == crc) {
/* We don't know anything about the remote replica. Try again later. */
return_value = ACQUIRE_TRANSIENT_ERROR;
goto error;
} else {
/* This replica is a 9.0 or later replica. */
prp->repl90consumer = 1;
}
/* Good to go. Start the protocol. */
/* Obtain a current CSN */
replarea_sdn = agmt_get_replarea(prp->agmt);
current_csn = get_current_csn(replarea_sdn);
if (NULL != current_csn) {
struct berval *payload = NULL;
int send_msgid = 0;
if (prp->repl90consumer) {
int is_total = 0;
char *data_guid = NULL;
struct berval *data = NULL;
/* Check if this is a total or incremental update. */
if (strcmp(REPL_NSDS50_TOTAL_PROTOCOL_OID, prot_oid) == 0) {
is_total = 1;
}
/* Call pre-start replication session callback. This callback
* may have extra data to be sent to the replica. */
if (repl_session_plugin_call_pre_acquire_cb(prp->agmt, is_total,
&data_guid, &data) == 0) {
payload = NSDS90StartReplicationRequest_new(
prot_oid, slapi_sdn_get_ndn(replarea_sdn),
NULL, current_csn, data_guid, data);
slapi_ch_free_string(&data_guid);
ber_bvfree(data);
data = NULL;
} else {
return_value = ACQUIRE_TRANSIENT_ERROR;
slapi_ch_free_string(&data_guid);
ber_bvfree(data);
data = NULL;
goto error;
}
} else {
payload = NSDS50StartReplicationRequest_new(
prot_oid, slapi_sdn_get_ndn(replarea_sdn),
NULL /* XXXggood need to provide referral(s) */, current_csn);
}
/* JCMREPL - Need to extract the referrals from the RUV */
crc = conn_send_extended_operation(conn,
prp->repl90consumer ? REPL_START_NSDS90_REPLICATION_REQUEST_OID : REPL_START_NSDS50_REPLICATION_REQUEST_OID, payload,
NULL /* update control */, &send_msgid /* Message ID */);
if (CONN_OPERATION_SUCCESS != crc) {
int operation, error;
conn_get_error(conn, &operation, &error);
/* Couldn't send the extended operation */
return_value = ACQUIRE_TRANSIENT_ERROR; /* XXX right return value? */
slapi_log_err(SLAPI_LOG_WARNING, repl_plugin_name, "acquire_replica - "
"%s: Unable to send a startReplication "
"extended operation to consumer (%s). Will retry later.\n",
agmt_get_long_name(prp->agmt),
error ? ldap_err2string(error) : "unknown error");
}
/* Since the operation request is async, we need to wait for the response here */
crc = conn_read_result_ex(conn, &retoid, &retdata, NULL, send_msgid, NULL, 1);
ber_bvfree(payload);
payload = NULL;
/* Look at the response we got. */
if (CONN_OPERATION_SUCCESS == crc) {
/*
* Extop was processed. Look at extop response to see if we're
* permitted to go ahead.
*/
int extop_result;
char *data_guid = NULL;
struct berval *data = NULL;
int extop_rc = decode_repl_ext_response(retdata, &extop_result,
&ruv_bervals, &data_guid,
&data);
if (0 == extop_rc) {
prp->last_acquire_response_code = extop_result;
switch (extop_result) {
/* XXXggood handle other error codes here */
case NSDS50_REPL_INTERNAL_ERROR:
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: "
"an internal error occurred on the remote replica. "
"Replication is aborting.\n",
agmt_get_long_name(prp->agmt));
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Failed to acquire replica: "
"Internal error occurred on the remote replica");
return_value = ACQUIRE_FATAL_ERROR;
break;
case NSDS50_REPL_PERMISSION_DENIED:
/* Not allowed to send updates */
{
char *repl_binddn = agmt_get_binddn(prp->agmt);
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: permission denied. "
"The bind dn \"%s\" does not have permission to "
"supply replication updates to the replica. "
"Will retry later.\n",
agmt_get_long_name(prp->agmt), repl_binddn);
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Unable to acquire replica: permission denied. "
"The bind dn does not have permission to "
"supply replication updates to the replica. "
"Will retry later.");
slapi_ch_free((void **)&repl_binddn);
return_value = ACQUIRE_TRANSIENT_ERROR;
break;
}
case NSDS50_REPL_NO_SUCH_REPLICA:
/* There is no such replica on the consumer */
{
Slapi_DN *repl_root = agmt_get_replarea(prp->agmt);
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: there is no "
"replicated area \"%s\" on the consumer server. "
"Replication is aborting.\n",
agmt_get_long_name(prp->agmt),
slapi_sdn_get_dn(repl_root));
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Unable to acquire replica: there is no "
"replicated area on the consumer server. "
"Replication is aborting.");
slapi_sdn_free(&repl_root);
return_value = ACQUIRE_FATAL_ERROR;
break;
}
case NSDS50_REPL_EXCESSIVE_CLOCK_SKEW:
/* Large clock skew between the consumer and the supplier */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: "
"Excessive clock skew between the supplier and "
"the consumer. Replication is aborting.\n",
agmt_get_long_name(prp->agmt));
return_value = ACQUIRE_FATAL_ERROR;
break;
case NSDS50_REPL_DECODING_ERROR:
/* We sent something the replica couldn't understand. */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: "
"the consumer was unable to decode the "
"startReplicationRequest extended operation sent by the "
"supplier. Replication is aborting.\n",
agmt_get_long_name(prp->agmt));
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Unable to acquire replica: "
"the consumer was unable to decode the "
"startReplicationRequest extended operation sent "
"by the supplier. Replication is aborting.");
return_value = ACQUIRE_FATAL_ERROR;
break;
case NSDS50_REPL_REPLICA_BUSY:
/* Someone else is updating the replica. Try later. */
/* if acquire_replica is called for replica
initialization, log REPLICA_BUSY, too */
if (strcmp(REPL_NSDS50_TOTAL_PROTOCOL_OID,
prot_oid) == 0) {
slapi_log_err(SLAPI_LOG_NOTICE, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: "
"the replica is currently being updated"
"by another supplier.\n",
agmt_get_long_name(prp->agmt));
} else /* REPL_NSDS50_INCREMENTAL_PROTOCOL_OID */
{
slapi_log_err(SLAPI_LOG_REPL, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: "
"the replica is currently being updated"
"by another supplier. Will try later\n",
agmt_get_long_name(prp->agmt));
}
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Unable to acquire replica: "
"the replica is currently being updated by another "
"supplier.");
return_value = ACQUIRE_REPLICA_BUSY;
break;
case NSDS50_REPL_REPLICAID_ERROR:
/* remote replica detected a duplicate ReplicaID */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to aquire replica: the replica "
"has the same Replica ID as this one. "
"Replication is aborting.\n",
agmt_get_long_name(prp->agmt));
agmt_set_last_update_status(prp->agmt, 0, NSDS50_REPL_REPLICAID_ERROR,
"Unable to acquire replica: the replica has the same "
"Replica ID as this one. Replication is aborting.");
return_value = ACQUIRE_FATAL_ERROR;
break;
case NSDS50_REPL_BACKOFF:
/* A replication session hook on the replica
* wants us to go into backoff mode. */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to acquire replica: "
"the replica instructed us to go into "
"backoff mode. Will retry later.\n",
agmt_get_long_name(prp->agmt));
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Unable to acquire replica: the replica instructed "
"us to go into backoff mode. Will retry later.");
return_value = ACQUIRE_TRANSIENT_ERROR;
break;
case NSDS50_REPL_REPLICA_READY:
/* Call any registered replication session post
* acquire callback if we are dealing with a 9.0
* style replica. We want to bail on sending
* updates if the return value is non-0. */
if (prp->repl90consumer) {
int is_total = 0;
/* Check if this is a total or incremental update. */
if (strcmp(REPL_NSDS50_TOTAL_PROTOCOL_OID, prot_oid) == 0) {
is_total = 1;
}
if (repl_session_plugin_call_post_acquire_cb(prp->agmt, is_total, data_guid, data)) {
slapi_ch_free_string(&data_guid);
ber_bvfree(data);
data = NULL;
return_value = ACQUIRE_TRANSIENT_ERROR;
break;
}
slapi_ch_free_string(&data_guid);
ber_bvfree(data);
data = NULL;
}
/* We've acquired the replica. */
slapi_log_err(SLAPI_LOG_REPL, repl_plugin_name,
"acquire_replica - "
"%s: Replica was successfully acquired.\n",
agmt_get_long_name(prp->agmt));
/* Parse the update vector */
if (NULL != ruv_bervals && NULL != ruv) {
if (ruv_init_from_bervals(ruv_bervals, ruv) != RUV_SUCCESS) {
/* Couldn't parse the update vector */
*ruv = NULL;
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: acquired replica, but could not parse update vector. "
"The replica must be reinitialized.\n",
agmt_get_long_name(prp->agmt));
}
}
/* Save consumer's RUV in the replication agreement.
It is used by the changelog trimming code */
if (ruv && *ruv)
agmt_set_consumer_ruv(prp->agmt, *ruv);
return_value = ACQUIRE_SUCCESS;
break;
default:
agmt_set_last_update_status(prp->agmt, 0, extop_result,
"Unable to acquire replica");
return_value = ACQUIRE_FATAL_ERROR;
}
} else {
/* Couldn't parse the response */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to parse the response to the "
"startReplication extended operation. "
"Replication is aborting.\n",
agmt_get_long_name(prp->agmt));
agmt_set_last_update_status(prp->agmt, 0, NSDS50_REPL_DECODING_ERROR,
"Unable to parse the response to the "
"startReplication extended operation. "
"Replication is aborting.");
prp->last_acquire_response_code = NSDS50_REPL_INTERNAL_ERROR;
return_value = ACQUIRE_FATAL_ERROR;
}
} else {
int operation, error;
conn_get_error(conn, &operation, &error);
/* Couldn't send the extended operation */
return_value = ACQUIRE_TRANSIENT_ERROR; /* XXX right return value? */
slapi_log_err(SLAPI_LOG_WARNING, repl_plugin_name,
"acquire_replica - "
"%s: Unable to receive the response for a startReplication "
"extended operation to consumer (%s). Will retry later.\n",
agmt_get_long_name(prp->agmt),
error ? ldap_err2string(error) : "unknown error");
agmt_set_last_update_status(prp->agmt, error, NSDS50_REPL_CONN_ERROR,
"Unable to receive the response for a startReplication "
"extended operation to consumer. Will retry later.");
}
} else {
/* Couldn't get a current CSN */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"acquire_replica - "
"%s: Unable to obtain current CSN. "
"Replication is aborting.\n",
agmt_get_long_name(prp->agmt));
agmt_set_last_update_status(prp->agmt, 0, NSDS50_REPL_INTERNAL_ERROR,
"Unable to obtain current CSN. Replication is aborting.");
return_value = ACQUIRE_FATAL_ERROR;
}
}
error:
csn_free(¤t_csn);
if (NULL != ruv_bervals)
ber_bvecfree(ruv_bervals);
if (NULL != replarea_sdn)
slapi_sdn_free(&replarea_sdn);
if (NULL != retoid)
ldap_memfree(retoid);
if (NULL != retdata)
ber_bvfree(retdata);
if (ACQUIRE_SUCCESS != return_value) {
/* could not acquire the replica, so reinstate the linger timer, since this
means we won't call release_replica, which also reinstates the timer */
conn_start_linger(conn);
} else {
/* replica successfully acquired */
prp->replica_acquired = PR_TRUE;
}
return return_value;
}
/*
* Release a replica by sending an "end replication" extended request.
*/
void
release_replica(Private_Repl_Protocol *prp)
{
int rc;
struct berval *retdata = NULL;
char *retoid = NULL;
struct berval *payload = NULL;
Slapi_DN *replarea_sdn = NULL;
int sent_message_id = 0;
int ret_message_id = 0;
ConnResult conres = 0;
PR_ASSERT(NULL != prp);
PR_ASSERT(NULL != prp->conn);
if (!prp->replica_acquired) {
return;
}
replarea_sdn = agmt_get_replarea(prp->agmt);
payload = NSDS50EndReplicationRequest_new((char *)slapi_sdn_get_dn(replarea_sdn)); /* XXXggood had to cast away const */
slapi_sdn_free(&replarea_sdn);
rc = conn_send_extended_operation(prp->conn,
REPL_END_NSDS50_REPLICATION_REQUEST_OID, payload, NULL /* update control */, &sent_message_id /* Message ID */);
ber_bvfree(payload); /* done with this - free it now */
if (0 != rc) {
int operation, error;
conn_get_error(prp->conn, &operation, &error);
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"release_replica - %s: Unable to send endReplication extended operation (%s)\n",
agmt_get_long_name(prp->agmt),
error ? ldap_err2string(error) : "unknown error");
goto error;
}
/* Since the operation request is async, we need to wait for the response here */
conres = conn_read_result_ex(prp->conn, &retoid, &retdata, NULL, sent_message_id, &ret_message_id, 1);
if (CONN_OPERATION_SUCCESS != conres) {
int operation, error;
conn_get_error(prp->conn, &operation, &error);
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"release_replica - %s: Attempting to release replica, but unable to receive endReplication extended "
"operation response from the replica. Error %d (%s)\n",
agmt_get_long_name(prp->agmt), error,
error ? ldap_err2string(error) : "unknown error");
} else {
struct berval **ruv_bervals = NULL; /* Shouldn't actually be returned */
int extop_result;
int extop_rc = 0;
char *data_guid = NULL;
struct berval *data = NULL;
/* Check the message id's match */
if (sent_message_id != ret_message_id) {
int operation, error;
conn_get_error(prp->conn, &operation, &error);
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"release_replica - %s: Response message id does not match the request (%s)\n",
agmt_get_long_name(prp->agmt),
error ? ldap_err2string(error) : "unknown error");
}
/* We need to pass data_guid and data in even though they
* are not used here. We will free them anyway in case they
* are used in the future. */
extop_rc = decode_repl_ext_response(retdata, &extop_result,
(struct berval ***)&ruv_bervals, &data_guid, &data);
slapi_ch_free_string(&data_guid);
ber_bvfree(data);
data = NULL;
if (0 == extop_rc) {
if (NSDS50_REPL_REPLICA_RELEASE_SUCCEEDED == extop_result) {
slapi_log_err(SLAPI_LOG_REPL, repl_plugin_name,
"release_replica - %s: Successfully released consumer\n", agmt_get_long_name(prp->agmt));
} else {
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"release_replica - %s: Unable to release consumer: response code %d\n",
agmt_get_long_name(prp->agmt), extop_result);
/* disconnect from the consumer so that it does not stay locked */
conn_disconnect(prp->conn);
}
} else {
/* Couldn't parse the response */
slapi_log_err(SLAPI_LOG_ERR, repl_plugin_name,
"release_replica - %s: Unable to parse the response "
" to the endReplication extended operation.\n",
agmt_get_long_name(prp->agmt));
}
if (NULL != ruv_bervals)
ber_bvecfree(ruv_bervals);
/* XXXggood free ruv_bervals if we got them for some reason */
}
if (NULL != retoid)
ldap_memfree(retoid);
if (NULL != retdata)
ber_bvfree(retdata);
/* replica is released, start the linger timer on the connection, which
was stopped in acquire_replica */
conn_start_linger(prp->conn);
error:
prp->replica_acquired = PR_FALSE;
}
/* converts consumer's response to a string */
char *
protocol_response2string(int response)
{
switch (response) {
case NSDS50_REPL_REPLICA_READY:
return "replica acquired";
case NSDS50_REPL_REPLICA_BUSY:
return "replica busy";
case NSDS50_REPL_EXCESSIVE_CLOCK_SKEW:
return "excessive clock skew";
case NSDS50_REPL_PERMISSION_DENIED:
return "permission denied";
case NSDS50_REPL_DECODING_ERROR:
return "decoding error";
case NSDS50_REPL_UNKNOWN_UPDATE_PROTOCOL:
return "unknown update protocol";
case NSDS50_REPL_NO_SUCH_REPLICA:
return "no such replica";
case NSDS50_REPL_BELOW_PURGEPOINT:
return "csn below purge point";
case NSDS50_REPL_INTERNAL_ERROR:
return "internal error";
case NSDS50_REPL_REPLICA_RELEASE_SUCCEEDED:
return "replica released";
case NSDS50_REPL_REPLICAID_ERROR:
return "duplicate replica ID detected";
case NSDS50_REPL_UPTODATE:
return "no change to send";
case NSDS50_REPL_CL_ERROR:
return "changelog error";
case NSDS50_REPL_CONN_ERROR:
return "connection error";
case NSDS50_REPL_CONN_TIMEOUT:
return "connection timeout";
case NSDS50_REPL_TRANSIENT_ERROR:
return "transient warning";
case NSDS50_REPL_RUV_ERROR:
return "RUV error";
case NSDS50_REPL_REPLICA_NO_RESPONSE:
return "no response received";
default:
return "unknown error";
}
}
int
repl5_strip_fractional_mods(Repl_Agmt *agmt, LDAPMod **mods)
{
char **a;
char **attrs_to_strip;
int retval = 0;
int strip = 1;
int i, j, k;
if (mods == NULL) {
return retval;
}
a = agmt_get_fractional_attrs(agmt);
if (a) {
/* Iterate through the fractional attr list */
for (i = 0; a[i] != NULL; i++) {
for (j = 0; NULL != mods[j];) {
/*
* Iterate through the attrs in this mod list.
* If any match the fractional attr then remove the mod.
*/
if (0 == slapi_attr_type_cmp(mods[j]->mod_type, a[i], SLAPI_TYPE_CMP_SUBTYPE)) {
/* Adjust value of j, implicit in not incrementing it */
/* Free this mod */
ber_bvecfree(mods[j]->mod_bvalues);
slapi_ch_free((void **)&(mods[j]->mod_type));
slapi_ch_free((void **)&mods[j]);
/* Move down all subsequent mods */
for (k = j; mods[k + 1]; k++) {
mods[k] = mods[k + 1];
}
/* Zero the end of the array */
mods[k] = NULL;
} else {
j++;
}
}
}
/*
* Check if "all" the remaining mods are on attributes we want to strip from the update.
* If all the mods are on attrs_to_strip, then free them.
*/
if ((attrs_to_strip = agmt_get_attrs_to_strip(agmt)) != NULL) {
for (j = 0; mods[j] != NULL; j++) {
if (slapi_ch_array_utf8_inlist(attrs_to_strip, mods[j]->mod_type) == 0) {
/* at least one of the mods is "real", so don't strip anything */
strip = 0;
break;
}
}
if (strip) {
/* free the remaining mods */
for (j = 0; mods[j] != NULL; j++) {
ber_bvecfree(mods[j]->mod_bvalues);
slapi_ch_free((void **)&(mods[j]->mod_type));
slapi_ch_free((void **)&mods[j]);
}
}
}
slapi_ch_array_free(a);
}
return retval;
}
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