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