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dyn_dnode_msg.c
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/*
* Dynomite - A thin, distributed replication layer for multi non-distributed storages.
* Copyright (C) 2014 Netflix, Inc.
*/
#include <ctype.h>
#include "dyn_core.h"
#include "dyn_crypto.h"
#include "dyn_dnode_msg.h"
#include "dyn_server.h"
#include "proto/dyn_proto.h"
static uint8_t version = VERSION_10;
static uint64_t dmsg_id; /* message id counter */
static uint32_t nfree_dmsgq; /* # free msg q */
static struct dmsg_tqh free_dmsgq; /* free msg q */
static const struct string MAGIC_STR = string(" $2014$ ");
static const struct string CRLF_STR = string(CRLF);
static unsigned char aes_encrypted_buf[130];
static unsigned char aes_decrypted_buf[34];
static rstatus_t dmsg_to_gossip(struct ring_msg *rmsg);
static bool
dyn_parse_core(struct msg *r)
{
struct dmsg *dmsg;
struct mbuf *b;
uint8_t *p = r->pos, *token;
uint8_t ch = ' ';
uint64_t num = 0;
dyn_state = r->dyn_state;
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "dyn_state: %d", r->dyn_state);
}
if (r->dyn_state == DYN_DONE || r->dyn_state == DYN_POST_DONE)
return true;
b = STAILQ_LAST(&r->mhdr, mbuf, next);
dmsg = r->dmsg;
if (dmsg == NULL) {
r->dmsg = dmsg_get();
dmsg = r->dmsg;
dmsg->owner = r;
if (dmsg == NULL) {//should track this as a dropped message
loga("unable to create a new dmsg");
goto error; //should count as OOM error
}
}
token = NULL;
for (p = r->pos; p < b->last; p++) {
ch = *p;
switch (dyn_state) {
case DYN_START:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_START");
}
if (ch != ' ' && ch != '$') {
break;
}
if (ch == ' ') {
if (token == NULL)
token = p;
break;
}
if (ch == '$') {
if (p + 5 < b->last) {
if ((*(p+1) == '2') &&
(*(p+2) == '0') &&
(*(p+3) == '1') &&
(*(p+4) == '4') &&
(*(p+5) == '$')) {
dyn_state = DYN_MAGIC_STRING;
p += 5;
} else {
//goto skip;
token = NULL; //reset
}
} else {
goto split;
}
} else {
loga("Facing a weird char %c", p);
//goto skip;
token = NULL; //reset
}
break;
case DYN_MAGIC_STRING:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_MAGIC_STRING");
}
if (ch == ' ') {
dyn_state = DYN_MSG_ID;
num = 0;
break;
} else {
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
token = NULL;
loga("Facing a weird char %c", p);
//goto skip;
dyn_state = DYN_START;
}
break;
case DYN_MSG_ID:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_MSG_ID");
log_debug(LOG_DEBUG, "num = %d", num);
}
if (isdigit(ch)) {
num = num*10 + (uint64_t)(ch - '0');
} else if (ch == ' ' && isdigit(*(p-1))) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "MSG ID : %d", num);
}
dmsg->id = num;
dyn_state = DYN_TYPE_ID;
num = 0;
} else {
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
//goto skip;
token = NULL; //reset
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_TYPE_ID:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_TYPE_ID: num = %d", num);
}
if (isdigit(ch)) {
num = num*10 + (uint64_t)(ch - '0');
} else if (ch == ' ' && isdigit(*(p-1))) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Type Id: %d", num);
}
dmsg->type = num;
dyn_state = DYN_BIT_FIELD;
num = 0;
} else {
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
token = NULL;
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_BIT_FIELD:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_BIT_FIELD, num = %d", num);
}
if (isdigit(ch)) {
num = num*10 + (uint64_t)(ch - '0');
} else if (ch == ' ' && isdigit(*(p-1))) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_BIT_FIELD : %d", num);
}
dmsg->bit_field = num & 0xF;
dyn_state = DYN_VERSION;
num = 0;
} else {
token = NULL;
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_VERSION:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_VERSION: num = %d", num);
}
if (isdigit(ch)) {
num = num*10 + (uint64_t)(ch - '0');
} else if (ch == ' ' && isdigit(*(p-1))) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "VERSION : %d", num);
}
dmsg->version = num;
dyn_state = DYN_SAME_DC;
num = 0;
} else {
token = NULL;
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_SAME_DC:
if (isdigit(ch)) {
dmsg->same_dc = (uint8_t)(ch - '0');
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_SAME_DC %d", dmsg->same_dc);
}
} else if (ch == ' ' && isdigit(*(p-1))) {
dyn_state = DYN_DATA_LEN;
num = 0;
} else {
token = NULL;
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_DATA_LEN:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_DATA_LEN: num = %d", num);
}
if (ch == '*') {
break;
} else if (isdigit(ch)) {
num = num*10 + (uint64_t)(ch - '0');
} else if (ch == ' ' && isdigit(*(p-1))) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Data len: %d", num);
}
dmsg->mlen = (uint32_t)num;
dyn_state = DYN_DATA;
num = 0;
} else {
token = NULL;
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_DATA:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_DATA");
}
if (p + dmsg->mlen < b->last) {
dmsg->data = p;
p += dmsg->mlen - 1;
dyn_state = DYN_SPACES_BEFORE_PAYLOAD_LEN;
} else {
//loga("char is '%c %c %c %c'", *(p-2), *(p-1), ch, *(p+1));
goto split;
}
break;
case DYN_SPACES_BEFORE_PAYLOAD_LEN:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_SPACES_BEFORE_PAYLOAD_LEN");
}
if (ch == ' ') {
break;
} else if (ch == '*') {
dyn_state = DYN_PAYLOAD_LEN;
num = 0;
}
break;
case DYN_PAYLOAD_LEN:
if (isdigit(ch)) {
num = num*10 + (uint64_t)(ch - '0');
} else if (ch == CR) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Payload len: %d", num);
}
dmsg->plen = (uint32_t)num;
num = 0;
dyn_state = DYN_CRLF_BEFORE_DONE;
} else {
token = NULL;
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_CRLF_BEFORE_DONE:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_CRLF_BEFORE_DONE");
}
if (*p == LF) {
dyn_state = DYN_DONE;
} else {
token = NULL;
dyn_state = DYN_START;
if (ch == '$')
p -= 1;
}
break;
case DYN_DONE:
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "DYN_DONE");
}
r->pos = p;
dmsg->payload = p;
r->dyn_state = DYN_DONE;
b->pos = p;
goto done;
break;
default:
NOT_REACHED();
break;
}
}
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Not fully parsed yet!!!!!!");
}
split:
//this is an attempt recovery when we got a bad message
//we try to look for the start the next good one and throw away the bad part
if (r->dyn_state == DYN_START) {
r->result = MSG_PARSE_AGAIN;
if (b->last == b->end) {
struct mbuf *nbuf = mbuf_get();
if (nbuf == NULL) {
loga("Unable to obtain a new mbuf for replacement!");
mbuf_put(b);
nbuf = mbuf_get();
mbuf_insert_head(&r->mhdr, nbuf);
r->pos = nbuf->pos;
return false;
}
//replacing the bad mbuf with a new and empty mbuf
mbuf_insert(&r->mhdr, nbuf);
mbuf_remove(&r->mhdr, b);
mbuf_put(b);
r->pos = nbuf->pos;
return false;
} else { //split it and throw away the bad portion
struct mbuf *nbuf;
nbuf = mbuf_split(&r->mhdr, r->pos, NULL, NULL);
if (nbuf == NULL) {
return DN_ENOMEM;
}
mbuf_insert(&r->mhdr, nbuf);
mbuf_remove(&r->mhdr, b);
mbuf_put(b);
r->pos = nbuf->pos;
return false;
}
}
if (mbuf_length(b) == 0 || b->last == b->end) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Would this case ever happen?");
}
r->result = MSG_PARSE_AGAIN;
return false;
}
if (r->pos == b->last) {
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Forward to reading the new block of data");
}
r->dyn_state = DYN_START;
r->result = MSG_PARSE_AGAIN;
token = NULL;
return false;
}
if (log_loggable(LOG_VVERB)) {
log_debug(LOG_VVERB, "in split");
}
r->dyn_state = DYN_START;
r->pos = token;
r->result = MSG_PARSE_REPAIR;
if (log_loggable(LOG_VVERB)) {
log_hexdump(LOG_VVERB, b->pos, mbuf_length(b), "split and inspecting req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
r->dyn_state);
log_hexdump(LOG_VVERB, b->start, b->last - b->start, "split and inspecting full req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
r->dyn_state);
}
return false;
done:
r->pos = p;
dmsg->source_address = r->owner->addr;
if (log_loggable(LOG_VVERB)) {
log_debug(LOG_VVERB, "at done with p at %d", p);
log_hexdump(LOG_VVERB, r->pos, b->last - r->pos, "done and inspecting req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
r->dyn_state);
log_hexdump(LOG_VVERB, b->start, b->last - b->start, "inspecting req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
r->dyn_state);
}
return true;
error:
log_debug(LOG_ERR, "at error for state %d and c %c", dyn_state, *p);
r->result = MSG_PARSE_ERROR;
r->pos = p;
errno = EINVAL;
if (log_loggable(LOG_ERR)) {
log_hexdump(LOG_ERR, b->pos, mbuf_length(b), "parsed bad req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
dyn_state);
log_hexdump(LOG_ERR, p, b->last - p, "inspecting req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
dyn_state);
}
r->dyn_state = dyn_state;
return false;
}
void
dyn_parse_req(struct msg *r)
{
if (log_loggable(LOG_VVERB)) {
log_debug(LOG_VVERB, ":::::::::::::::::::::: In dyn_parse_req, start to process request :::::::::::::::::::::: ");
msg_dump(r);
}
bool done_parsing = false;
struct mbuf *b = STAILQ_LAST(&r->mhdr, mbuf, next);
if (dyn_parse_core(r)) {
struct dmsg *dmsg = r->dmsg;
struct conn *conn = r->owner;
conn->same_dc = !!dmsg->same_dc;
if (dmsg->type != DMSG_UNKNOWN && dmsg->type != DMSG_REQ &&
dmsg->type != DMSG_REQ_FORWARD && dmsg->type != GOSSIP_SYN) {
r->state = 0;
r->result = MSG_PARSE_OK;
r->dyn_state = DYN_DONE;
return;
}
if (r->dyn_state == DYN_DONE && dmsg->bit_field == 1) {
dmsg->owner->owner->dnode_secured = 1;
r->owner->dnode_crypto_state = 1;
r->dyn_state = DYN_POST_DONE;
r->result = MSG_PARSE_REPAIR;
if (dmsg->mlen > 1) {
//Decrypt AES key
dyn_rsa_decrypt(dmsg->data, aes_decrypted_buf);
strncpy((char*)r->owner->aes_key, (char*)aes_decrypted_buf, strlen((char*)aes_decrypted_buf));
}
if (dmsg->plen + b->pos <= b->last) {
struct mbuf *decrypted_buf = mbuf_get();
if (decrypted_buf == NULL) {
loga("Unable to obtain an mbuf for dnode msg's header!");
r->result = MSG_OOM_ERROR;
return;
}
dyn_aes_decrypt(b->pos, dmsg->plen, decrypted_buf, r->owner->aes_key);
b->pos = b->pos + dmsg->plen;
r->pos = decrypted_buf->start;
mbuf_copy(decrypted_buf, b->pos, mbuf_length(b));
mbuf_insert(&r->mhdr, decrypted_buf);
mbuf_remove(&r->mhdr, b);
mbuf_put(b);
r->mlen = mbuf_length(decrypted_buf);
data_store_parse_req(r);
}
//substract alraedy received bytes
dmsg->plen -= (uint32_t)(b->last - b->pos);
return;
} else if (r->dyn_state == DYN_POST_DONE) {
struct mbuf *last_buf = STAILQ_LAST(&r->mhdr, mbuf, next);
if (last_buf->read_flip == 1) {
data_store_parse_req(r);
} else {
r->result = MSG_PARSE_AGAIN;
}
return;
}
if (dmsg->type == GOSSIP_SYN) {
//TODOs: need to address multi-buffer msg later
dmsg->payload = b->pos;
b->pos = b->pos + dmsg->plen;
r->pos = b->pos;
done_parsing = true;
}
if (done_parsing)
return;
return data_store_parse_req(r);
}
//bad case
if (log_loggable(LOG_VVERB)) {
log_debug(LOG_VVERB, "Bad or splitted message"); //fix me to do something
msg_dump(r);
}
r->result = MSG_PARSE_AGAIN;
}
void dyn_parse_rsp(struct msg *r)
{
if (log_loggable(LOG_VVERB)) {
log_debug(LOG_VVERB, ":::::::::::::::::::::: In dyn_parse_rsp, start to process response :::::::::::::::::::::::: ");
msg_dump(r);
}
bool done_parsing = false;
struct mbuf *b = STAILQ_LAST(&r->mhdr, mbuf, next);
if (dyn_parse_core(r)) {
struct dmsg *dmsg = r->dmsg;
struct conn *conn = r->owner;
conn->same_dc = !!dmsg->same_dc;
if (dmsg->type != DMSG_UNKNOWN && dmsg->type != DMSG_RES) {
log_debug(LOG_DEBUG, "Resp parser: I got a dnode msg of type %d", dmsg->type);
r->state = 0;
r->result = MSG_PARSE_OK;
r->dyn_state = DYN_DONE;
return;
}
if (r->dyn_state == DYN_DONE && dmsg->bit_field == 1) {
dmsg->owner->owner->dnode_secured = 1;
r->owner->dnode_crypto_state = 1;
r->dyn_state = DYN_POST_DONE;
r->result = MSG_PARSE_REPAIR;
if (dmsg->mlen > 1) {
//Decrypt AES key
dyn_rsa_decrypt(dmsg->data, aes_decrypted_buf);
strncpy((char *)r->owner->aes_key, (char *)aes_decrypted_buf,
strlen((char *)aes_decrypted_buf));
}
if (dmsg->plen + b->pos <= b->last) {
struct mbuf *decrypted_buf = mbuf_get();
if (decrypted_buf == NULL) {
loga("Unable to obtain an mbuf for dnode msg's header!");
r->result = MSG_OOM_ERROR;
return;
}
dyn_aes_decrypt(b->pos, dmsg->plen, decrypted_buf, r->owner->aes_key);
b->pos = b->pos + dmsg->plen;
r->pos = decrypted_buf->start;
mbuf_copy(decrypted_buf, b->pos, mbuf_length(b));
mbuf_insert(&r->mhdr, decrypted_buf);
mbuf_remove(&r->mhdr, b);
mbuf_put(b);
r->mlen = mbuf_length(decrypted_buf);
return data_store_parse_rsp(r);
}
//Subtract already received bytes
dmsg->plen -= (uint32_t)(b->last - b->pos);
return;
} else if (r->dyn_state == DYN_POST_DONE) {
struct mbuf *last_buf = STAILQ_LAST(&r->mhdr, mbuf, next);
if (last_buf->read_flip == 1) {
data_store_parse_rsp(r);
} else {
r->result = MSG_PARSE_AGAIN;
}
return;
}
if (done_parsing)
return;
return data_store_parse_rsp(r);
}
//bad case
if (log_loggable(LOG_DEBUG)) {
log_debug(LOG_DEBUG, "Resp: bad message - cannot parse"); //fix me to do something
msg_dump(r);
}
r->result = MSG_PARSE_AGAIN;
}
void
dmsg_free(struct dmsg *dmsg)
{
log_debug(LOG_VVVERB, "free dmsg %p id %"PRIu64"", dmsg, dmsg->id);
dn_free(dmsg);
}
void
dmsg_put(struct dmsg *dmsg)
{
if (log_loggable(LOG_VVVERB)) {
log_debug(LOG_VVVERB, "put dmsg %p id %"PRIu64"", dmsg, dmsg->id);
}
nfree_dmsgq++;
TAILQ_INSERT_HEAD(&free_dmsgq, dmsg, m_tqe);
}
void
dmsg_dump(struct dmsg *dmsg)
{
log_debug(LOG_VVVERB, "dmsg dump: id %"PRIu64" version %d bit_field %d type %d len %"PRIu32" plen %"PRIu32" ",
dmsg->id, dmsg->version, dmsg->bit_field, dmsg->type, dmsg->mlen, dmsg->plen);
}
void
dmsg_init(void)
{
log_debug(LOG_VVVERB, "dmsg size %d", sizeof(struct dmsg));
dmsg_id = 0;
nfree_dmsgq = 0;
TAILQ_INIT(&free_dmsgq);
}
void
dmsg_deinit(void)
{
struct dmsg *msg, *nmsg;
for (msg = TAILQ_FIRST(&free_dmsgq); msg != NULL;
msg = nmsg, nfree_dmsgq--) {
ASSERT(nfree_dmsgq > 0);
nmsg = TAILQ_NEXT(msg, m_tqe);
dmsg_free(msg);
}
ASSERT(nfree_dmsgq == 0);
}
bool
dmsg_empty(struct dmsg *msg)
{
return msg->mlen == 0 ? true : false;
}
struct dmsg *
dmsg_get(void)
{
struct dmsg *dmsg;
if (!TAILQ_EMPTY(&free_dmsgq)) {
ASSERT(nfree_dmsgq > 0);
dmsg = TAILQ_FIRST(&free_dmsgq);
nfree_dmsgq--;
TAILQ_REMOVE(&free_dmsgq, dmsg, m_tqe);
goto done;
}
dmsg = dn_alloc(sizeof(*dmsg));
if (dmsg == NULL) {
return NULL;
}
done:
// STAILQ_INIT(&dmsg->mhdr);
dmsg->mlen = 0;
dmsg->data = NULL;
dmsg->plen = 0;
dmsg->payload = NULL;
dmsg->type = DMSG_UNKNOWN;
dmsg->version = VERSION_10;
dmsg->id = 0;
dmsg->source_address = NULL;
dmsg->owner = NULL;
dmsg->bit_field = 0;
dmsg->same_dc = 1;
return dmsg;
}
rstatus_t
dmsg_write(struct mbuf *mbuf, uint64_t msg_id, uint8_t type,
struct conn *conn, uint32_t payload_len)
{
mbuf_write_string(mbuf, &MAGIC_STR);
mbuf_write_uint64(mbuf, msg_id);
//type
mbuf_write_char(mbuf, ' ');
mbuf_write_uint8(mbuf, type);
//bit field
mbuf_write_char(mbuf, ' ');
//encryption bit
if (conn->dnode_secured) {
mbuf_write_uint8(mbuf, 1);
} else {
mbuf_write_uint8(mbuf, 0);
}
//version
mbuf_write_char(mbuf, ' ');
mbuf_write_uint8(mbuf, version);
//same-dc
mbuf_write_char(mbuf, ' ');
if (conn->same_dc)
mbuf_write_uint8(mbuf, 1);
else
mbuf_write_uint8(mbuf, 0);
//data
mbuf_write_char(mbuf, ' ');
mbuf_write_char(mbuf, '*');
//write aes key
unsigned char *aes_key = conn->aes_key;
if (conn->dnode_secured && conn->dnode_crypto_state == 0) {
mbuf_write_uint32(mbuf, (uint32_t)dyn_rsa_size());
} else {
mbuf_write_uint32(mbuf, 1);
}
//payload
mbuf_write_char(mbuf, ' ');
//mbuf_write_string(mbuf, data);
if (conn->dnode_secured && conn->dnode_crypto_state == 0) {
dyn_rsa_encrypt(aes_key, aes_encrypted_buf);
mbuf_write_bytes(mbuf, aes_encrypted_buf, dyn_rsa_size());
conn->dnode_crypto_state = 1;
} else {
mbuf_write_char(mbuf, 'd'); //TODOs: replace with another string
}
mbuf_write_char(mbuf, ' ');
mbuf_write_char(mbuf, '*');
mbuf_write_uint32(mbuf, payload_len);
mbuf_write_string(mbuf, &CRLF_STR);
return DN_OK;
}
//Used in gossip forwarding msg only for now
rstatus_t
dmsg_write_mbuf(struct mbuf *mbuf, uint64_t msg_id, uint8_t type, struct conn *conn, uint32_t plen)
{
mbuf_write_string(mbuf, &MAGIC_STR);
mbuf_write_uint64(mbuf, msg_id);
mbuf_write_char(mbuf, ' ');
mbuf_write_uint8(mbuf, type);
mbuf_write_char(mbuf, ' ');
//encryption bit
if (conn->dnode_secured) {
mbuf_write_uint8(mbuf, 1);
} else {
mbuf_write_uint8(mbuf, 0);
}
mbuf_write_char(mbuf, ' ');
mbuf_write_uint8(mbuf, version);
//same-dc
mbuf_write_char(mbuf, ' ');
if (conn->same_dc)
mbuf_write_uint8(mbuf, 1);
else
mbuf_write_uint8(mbuf, 0);
//mbuf_write_string(mbuf, &CRLF_STR);
mbuf_write_char(mbuf, ' ');
mbuf_write_char(mbuf, '*');
//write aes key
unsigned char *aes_key = conn->aes_key;
if (conn->dnode_secured) {
mbuf_write_uint32(mbuf, (uint32_t)dyn_rsa_size());
} else {
mbuf_write_uint32(mbuf, 1);
}
mbuf_write_char(mbuf, ' ');
//mbuf_write_mbuf(mbuf, data);
if (conn->dnode_secured) {
dyn_rsa_encrypt(aes_key, aes_encrypted_buf);
mbuf_write_bytes(mbuf, aes_encrypted_buf, dyn_rsa_size());
} else {
mbuf_write_char(mbuf, 'a'); //TODOs: replace with another string
}
//mbuf_write_string(mbuf, &CRLF_STR);
mbuf_write_char(mbuf, ' ');
mbuf_write_char(mbuf, '*');
mbuf_write_uint32(mbuf, plen);
mbuf_write_string(mbuf, &CRLF_STR);
return DN_OK;
}
static rstatus_t
dmsg_to_gossip(struct ring_msg *rmsg)
{
CBUF_Push(C2G_InQ, rmsg);
return DN_OK;
}
static void
dmsg_parse_host_id(uint8_t *start, uint32_t len,
struct string *dc, struct string *rack, struct dyn_token *token)
{
uint8_t *p, *q;
uint8_t *dc_p, *rack_p, *token_p;
uint32_t k, delimlen, dc_len, rack_len, token_len;
char delim[] = "$$";
delimlen = 2;
/* parse "dc$rack$token : don't support vnode for now */
p = start + len - 1;
dc_p = NULL;
rack_p = NULL;
token_p = NULL;
dc_len = rack_len = token_len = 0;
for (k = 0; k < sizeof(delim)-1; k++) {
q = dn_strrchr(p, start, delim[k]);
switch (k) {
case 0:
//no support for vnode at this time
token_p = q + 1;
token_len = (uint32_t)(p - token_p + 1);
parse_dyn_token(token_p, token_len, token);
break;
case 1:
rack_p = q + 1;
rack_len = (uint32_t)(p - rack_p + 1);
string_copy(rack, rack_p, rack_len);
break;
default:
NOT_REACHED();
}
p = q - 1;
}
if (k != delimlen) {
loga("Error: this should not happen");
return;// DN_ERROR;
}
dc_p = start;
dc_len = len - (token_len + rack_len + 2);
string_copy(dc, dc_p, dc_len);
}
static struct ring_msg *
dmsg_parse(struct dmsg *dmsg)
{
//rstatus_t status;
uint8_t *p, *q, *start, *end, *pipe_p;
uint8_t *host_id, *host_addr, *ts, *node_state;
uint32_t k, delimlen, host_id_len, host_addr_len, ts_len, node_state_len;
char delim[] = ",,,";
delimlen = 3;
/* parse "host_id1,generation_ts1,host_state1,host_broadcast_address1|host_id2,generation_ts2,host_state2,host_broadcast_address2" */
/* host_id = dc-rack-token */
//p = dmsg->data + dmsg->mlen - 1;
//p = dmsg->owner->pos + dmsg->owner->mlen - 1;
p = dmsg->payload + dmsg->plen - 1;
end = p;
//start = dmsg->data;
//start = dmsg->owner->pos;
start = dmsg->payload;
host_id = NULL;
host_addr = NULL;
ts = NULL;
node_state = NULL;
host_id_len = 0;
host_addr_len = 0;
ts_len = 0;
node_state_len = 0;
pipe_p = start;
uint32_t count = 0;
do {
q = dn_strrchr(p, start, '|');
count++;
p = q - 1;
} while (q != NULL);
struct ring_msg *ring_msg = create_ring_msg_with_size(count, true);
if (ring_msg == NULL) {
log_debug(LOG_ERR, "Error: unable to create a new ring msg!");
//we just drop this msg
return NULL;
}
struct server_pool *sp = (struct server_pool *) dmsg->owner->owner->owner;
ring_msg->sp = sp;
ring_msg->cb = gossip_msg_peer_update;
count = 0;
//p = dmsg->data + dmsg->mlen - 1;
p = dmsg->payload + dmsg->plen - 1;
do {
for (k = 0; k < sizeof(delim)-1; k++) {
q = dn_strrchr(p, start, delim[k]);
switch (k) {
case 0:
host_addr = q + 1;
host_addr_len = (uint32_t)(p - host_addr + 1);
break;
case 1:
node_state = q + 1;
node_state_len = (uint32_t)(p - node_state + 1);
break;
case 2:
ts = q + 1;
ts_len = (uint32_t)(p - ts + 1);
break;
default:
NOT_REACHED();
}
p = q - 1;