mirror of
https://github.com/samba-team/samba.git
synced 2024-12-23 17:34:34 +03:00
3f2495a4eb
Signed-off-by: Amitay Isaacs <amitay@gmail.com> Reviewed-by: Martin Schwenke <martin@meltin.net>
465 lines
9.5 KiB
C
465 lines
9.5 KiB
C
/*
|
|
CTDB protocol marshalling
|
|
|
|
Copyright (C) Amitay Isaacs 2015
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "replace.h"
|
|
#include "system/network.h"
|
|
|
|
#include <talloc.h>
|
|
#include <tdb.h>
|
|
|
|
#include "protocol.h"
|
|
#include "protocol_api.h"
|
|
#include "protocol_private.h"
|
|
|
|
|
|
static size_t ctdb_message_data_len(union ctdb_message_data *mdata,
|
|
uint64_t srvid)
|
|
{
|
|
size_t len = 0;
|
|
|
|
switch (srvid) {
|
|
case CTDB_SRVID_BANNING:
|
|
len = ctdb_uint32_len(&mdata->pnn);
|
|
break;
|
|
|
|
case CTDB_SRVID_ELECTION:
|
|
len = ctdb_election_message_len(mdata->election);
|
|
break;
|
|
|
|
case CTDB_SRVID_RECONFIGURE:
|
|
break;
|
|
|
|
case CTDB_SRVID_RELEASE_IP:
|
|
len = ctdb_string_len(&mdata->ipaddr);
|
|
break;
|
|
|
|
case CTDB_SRVID_TAKE_IP:
|
|
len = ctdb_string_len(&mdata->ipaddr);
|
|
break;
|
|
|
|
case CTDB_SRVID_SET_NODE_FLAGS:
|
|
len = ctdb_node_flag_change_len(mdata->flag_change);
|
|
break;
|
|
|
|
case CTDB_SRVID_RECD_UPDATE_IP:
|
|
len = ctdb_public_ip_len(mdata->pubip);
|
|
break;
|
|
|
|
case CTDB_SRVID_VACUUM_FETCH:
|
|
len = ctdb_rec_buffer_len(mdata->recbuf);
|
|
break;
|
|
|
|
case CTDB_SRVID_DETACH_DATABASE:
|
|
len = ctdb_uint32_len(&mdata->db_id);
|
|
break;
|
|
|
|
case CTDB_SRVID_MEM_DUMP:
|
|
len = ctdb_srvid_message_len(mdata->msg);
|
|
break;
|
|
|
|
case CTDB_SRVID_GETLOG:
|
|
break;
|
|
|
|
case CTDB_SRVID_CLEARLOG:
|
|
break;
|
|
|
|
case CTDB_SRVID_PUSH_NODE_FLAGS:
|
|
len = ctdb_node_flag_change_len(mdata->flag_change);
|
|
break;
|
|
|
|
case CTDB_SRVID_RELOAD_NODES:
|
|
break;
|
|
|
|
case CTDB_SRVID_TAKEOVER_RUN:
|
|
len = ctdb_srvid_message_len(mdata->msg);
|
|
break;
|
|
|
|
case CTDB_SRVID_REBALANCE_NODE:
|
|
len = ctdb_uint32_len(&mdata->pnn);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_TAKEOVER_RUNS:
|
|
len = ctdb_disable_message_len(mdata->disable);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_RECOVERIES:
|
|
len = ctdb_disable_message_len(mdata->disable);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_IP_CHECK:
|
|
len = ctdb_uint32_len(&mdata->timeout);
|
|
break;
|
|
|
|
default:
|
|
len = ctdb_tdb_data_len(&mdata->data);
|
|
break;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static void ctdb_message_data_push(union ctdb_message_data *mdata,
|
|
uint64_t srvid, uint8_t *buf,
|
|
size_t *npush)
|
|
{
|
|
size_t np = 0;
|
|
|
|
switch (srvid) {
|
|
case CTDB_SRVID_BANNING:
|
|
ctdb_uint32_push(&mdata->pnn, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_ELECTION:
|
|
ctdb_election_message_push(mdata->election, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_RECONFIGURE:
|
|
break;
|
|
|
|
case CTDB_SRVID_RELEASE_IP:
|
|
ctdb_string_push(&mdata->ipaddr, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_TAKE_IP:
|
|
ctdb_string_push(&mdata->ipaddr, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_SET_NODE_FLAGS:
|
|
ctdb_node_flag_change_push(mdata->flag_change, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_RECD_UPDATE_IP:
|
|
ctdb_public_ip_push(mdata->pubip, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_VACUUM_FETCH:
|
|
ctdb_rec_buffer_push(mdata->recbuf, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DETACH_DATABASE:
|
|
ctdb_uint32_push(&mdata->db_id, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_MEM_DUMP:
|
|
ctdb_srvid_message_push(mdata->msg, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_GETLOG:
|
|
break;
|
|
|
|
case CTDB_SRVID_CLEARLOG:
|
|
break;
|
|
|
|
case CTDB_SRVID_PUSH_NODE_FLAGS:
|
|
ctdb_node_flag_change_push(mdata->flag_change, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_RELOAD_NODES:
|
|
break;
|
|
|
|
case CTDB_SRVID_TAKEOVER_RUN:
|
|
ctdb_srvid_message_push(mdata->msg, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_REBALANCE_NODE:
|
|
ctdb_uint32_push(&mdata->pnn, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_TAKEOVER_RUNS:
|
|
ctdb_disable_message_push(mdata->disable, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_RECOVERIES:
|
|
ctdb_disable_message_push(mdata->disable, buf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_IP_CHECK:
|
|
ctdb_uint32_push(&mdata->timeout, buf, &np);
|
|
break;
|
|
|
|
default:
|
|
ctdb_tdb_data_push(&mdata->data, buf, &np);
|
|
break;
|
|
}
|
|
|
|
*npush = np;
|
|
}
|
|
|
|
static int ctdb_message_data_pull(uint8_t *buf, size_t buflen,
|
|
uint64_t srvid, TALLOC_CTX *mem_ctx,
|
|
union ctdb_message_data *mdata,
|
|
size_t *npull)
|
|
{
|
|
int ret = 0;
|
|
size_t np = 0;
|
|
|
|
switch (srvid) {
|
|
case CTDB_SRVID_BANNING:
|
|
ret = ctdb_uint32_pull(buf, buflen, &mdata->pnn, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_ELECTION:
|
|
ret = ctdb_election_message_pull(buf, buflen, mem_ctx,
|
|
&mdata->election, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_RECONFIGURE:
|
|
break;
|
|
|
|
case CTDB_SRVID_RELEASE_IP:
|
|
ret = ctdb_string_pull(buf, buflen, mem_ctx, &mdata->ipaddr,
|
|
&np);
|
|
break;
|
|
|
|
case CTDB_SRVID_TAKE_IP:
|
|
ret = ctdb_string_pull(buf, buflen, mem_ctx, &mdata->ipaddr,
|
|
&np);
|
|
break;
|
|
|
|
case CTDB_SRVID_SET_NODE_FLAGS:
|
|
ret = ctdb_node_flag_change_pull(buf, buflen, mem_ctx,
|
|
&mdata->flag_change, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_RECD_UPDATE_IP:
|
|
ret = ctdb_public_ip_pull(buf, buflen, mem_ctx,
|
|
&mdata->pubip, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_VACUUM_FETCH:
|
|
ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
|
|
&mdata->recbuf, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DETACH_DATABASE:
|
|
ret = ctdb_uint32_pull(buf, buflen, &mdata->db_id, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_MEM_DUMP:
|
|
ret = ctdb_srvid_message_pull(buf, buflen, mem_ctx,
|
|
&mdata->msg, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_GETLOG:
|
|
break;
|
|
|
|
case CTDB_SRVID_CLEARLOG:
|
|
break;
|
|
|
|
case CTDB_SRVID_PUSH_NODE_FLAGS:
|
|
ret = ctdb_node_flag_change_pull(buf, buflen, mem_ctx,
|
|
&mdata->flag_change, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_RELOAD_NODES:
|
|
break;
|
|
|
|
case CTDB_SRVID_TAKEOVER_RUN:
|
|
ret = ctdb_srvid_message_pull(buf, buflen, mem_ctx,
|
|
&mdata->msg, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_REBALANCE_NODE:
|
|
ret = ctdb_uint32_pull(buf, buflen, &mdata->pnn, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_TAKEOVER_RUNS:
|
|
ret = ctdb_disable_message_pull(buf, buflen, mem_ctx,
|
|
&mdata->disable, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_RECOVERIES:
|
|
ret = ctdb_disable_message_pull(buf, buflen, mem_ctx,
|
|
&mdata->disable, &np);
|
|
break;
|
|
|
|
case CTDB_SRVID_DISABLE_IP_CHECK:
|
|
ret = ctdb_uint32_pull(buf, buflen, &mdata->timeout, &np);
|
|
break;
|
|
|
|
default:
|
|
ret = ctdb_tdb_data_pull(buf, buflen, mem_ctx, &mdata->data,
|
|
&np);
|
|
break;
|
|
}
|
|
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
|
|
*npull = np;
|
|
return 0;
|
|
}
|
|
|
|
size_t ctdb_req_message_len(struct ctdb_req_header *h,
|
|
struct ctdb_req_message *c)
|
|
{
|
|
uint32_t u32 = ctdb_message_data_len(&c->data, c->srvid);
|
|
|
|
return ctdb_req_header_len(h) +
|
|
ctdb_uint64_len(&c->srvid) +
|
|
ctdb_uint32_len(&u32) + u32;
|
|
}
|
|
|
|
int ctdb_req_message_push(struct ctdb_req_header *h,
|
|
struct ctdb_req_message *c,
|
|
uint8_t *buf, size_t *buflen)
|
|
{
|
|
size_t offset = 0, np;
|
|
size_t length;
|
|
uint32_t u32;
|
|
|
|
length = ctdb_req_message_len(h, c);
|
|
if (*buflen < length) {
|
|
*buflen = length;
|
|
return EMSGSIZE;
|
|
}
|
|
|
|
h->length = *buflen;
|
|
ctdb_req_header_push(h, buf+offset, &np);
|
|
offset += np;
|
|
|
|
ctdb_uint64_push(&c->srvid, buf+offset, &np);
|
|
offset += np;
|
|
|
|
u32 = ctdb_message_data_len(&c->data, c->srvid);
|
|
ctdb_uint32_push(&u32, buf+offset, &np);
|
|
offset += np;
|
|
|
|
ctdb_message_data_push(&c->data, c->srvid, buf+offset, &np);
|
|
offset += np;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ctdb_req_message_pull(uint8_t *buf, size_t buflen,
|
|
struct ctdb_req_header *h,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct ctdb_req_message *c)
|
|
{
|
|
struct ctdb_req_header header;
|
|
size_t offset = 0, np;
|
|
uint32_t u32;
|
|
int ret;
|
|
|
|
ret = ctdb_req_header_pull(buf+offset, buflen-offset, &header, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
if (h != NULL) {
|
|
*h = header;
|
|
}
|
|
|
|
ret = ctdb_uint64_pull(buf+offset, buflen-offset, &c->srvid, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
ret = ctdb_uint32_pull(buf+offset, buflen-offset, &u32, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
if (buflen-offset < u32) {
|
|
return EMSGSIZE;
|
|
}
|
|
|
|
ret = ctdb_message_data_pull(buf+offset, u32, c->srvid,
|
|
mem_ctx, &c->data, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
return ret;
|
|
}
|
|
|
|
size_t ctdb_req_message_data_len(struct ctdb_req_header *h,
|
|
struct ctdb_req_message_data *c)
|
|
{
|
|
return ctdb_req_header_len(h) +
|
|
ctdb_uint64_len(&c->srvid) +
|
|
ctdb_tdb_datan_len(&c->data);
|
|
}
|
|
|
|
int ctdb_req_message_data_push(struct ctdb_req_header *h,
|
|
struct ctdb_req_message_data *c,
|
|
uint8_t *buf, size_t *buflen)
|
|
{
|
|
size_t offset = 0, np;
|
|
size_t length;
|
|
|
|
length = ctdb_req_message_data_len(h, c);
|
|
if (*buflen < length) {
|
|
*buflen = length;
|
|
return EMSGSIZE;
|
|
}
|
|
|
|
h->length = *buflen;
|
|
ctdb_req_header_push(h, buf+offset, &np);
|
|
offset += np;
|
|
|
|
ctdb_uint64_push(&c->srvid, buf+offset, &np);
|
|
offset += np;
|
|
|
|
ctdb_tdb_datan_push(&c->data, buf+offset, &np);
|
|
offset += np;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ctdb_req_message_data_pull(uint8_t *buf, size_t buflen,
|
|
struct ctdb_req_header *h,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct ctdb_req_message_data *c)
|
|
{
|
|
struct ctdb_req_header header;
|
|
size_t offset = 0, np;
|
|
int ret;
|
|
|
|
ret = ctdb_req_header_pull(buf+offset, buflen-offset, &header, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
if (h != NULL) {
|
|
*h = header;
|
|
}
|
|
|
|
ret = ctdb_uint64_pull(buf+offset, buflen-offset, &c->srvid, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
ret = ctdb_tdb_datan_pull(buf+offset, buflen-offset,
|
|
mem_ctx, &c->data, &np);
|
|
if (ret != 0) {
|
|
return ret;
|
|
}
|
|
offset += np;
|
|
|
|
return 0;
|
|
}
|