/*
* return : true to bypass all processing from the stack
* false to go through the whole stack to process a given msg
*/
bool
dmsg_process(struct context *ctx, struct conn *conn, struct dmsg *dmsg)
{
ASSERT(dmsg != NULL);
ASSERT(conn->dyn_mode);
switch(dmsg->type) {
case GOSSIP_SYN:
log_debug(LOG_DEBUG, "I have got a GOSSIP_SYN!!!!!!");
dmsg_dump(dmsg);
//TODOs: fix this to reply the 1st time sender
//dnode_rsp_gos_syn(ctx, conn, dmsg->owner);
dmsg_parse(dmsg);
return true;
case CRYPTO_HANDSHAKE:
log_debug(LOG_DEBUG, "I have a crypto handshake msg and processing it now");
//TODOs: will work on this to optimize the performance
return true;
case GOSSIP_SYN_REPLY:
log_debug(LOG_DEBUG, "I have got a GOSSIP_SYN_REPLY!!!!!!");
return true;
default:
log_debug(LOG_DEBUG, "nothing to do");
}
return false;
}
static bool
dyn_parse_core(struct msg *r)
{
struct dmsg *dmsg;
struct mbuf *b;
uint8_t *p;
uint8_t ch;
uint64_t num = 0;
state = r->dyn_state;
b = STAILQ_LAST(&r->mhdr, mbuf, next);
dmsg = r->dmsg;
if (dmsg == NULL) {
r->dmsg = dmsg_get();
dmsg = r->dmsg;
if (dmsg == NULL) {//should track this as a dropped message
goto error; //should count as OOM error
}
}
//log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "dyn parser: parsed req %"PRIu64" res %d type %d", r->id, r->result, r->type, r->dyn_state);
for (p = r->pos; p < b->last; p++) {
ch = *p;
switch (state) {
case DYN_START:
//log_debug(LOG_DEBUG, "DYN_START");
if (ch == ' ') {
break;
} else if (isdigit(ch)) {
num = ch - '0';
state = DYN_MAGIC_NUMBER;
} else {
goto skip;
}
break;
case DYN_MAGIC_NUMBER:
//log_debug(LOG_DEBUG, "DYN_MAGIC_NUMBER");
//log_debug(LOG_DEBUG, "num = %d", num);
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else {
if (num == MAGIC_NUMBER) {
state = DYN_SPACES_BEFORE_MSG_ID;
} else {
goto error;
}
}
break;
case DYN_SPACES_BEFORE_MSG_ID:
//log_debug(LOG_DEBUG, "DYN_SPACES_BEFORE_MSG_ID");
if (ch == ' ') {
break;
} else if (isdigit(ch)) {
num = ch - '0';
state = DYN_MSG_ID;
} else {
goto error;
}
break;
case DYN_MSG_ID:
log_debug(LOG_DEBUG, "DYN_MSG_ID");
log_debug(LOG_DEBUG, "num = %d", num);
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else if (ch != ' ') {
goto error;
} else {
//if (num >= 0) {
//log_debug(LOG_DEBUG, "MSG ID : %d", num);
dmsg->id = num;
state = DYN_SPACES_BEFORE_TYPE_ID;
//} else {
// goto error;
//}
}
break;
case DYN_SPACES_BEFORE_TYPE_ID:
log_debug(LOG_DEBUG, "DYN_SPACES_BEFORE_TYPE_ID");
if (ch == ' ') {
break;
} else if (isdigit(ch)) {
num = ch - '0';
state = DYN_TYPE_ID;
} else {
goto error;
}
break;
case DYN_TYPE_ID:
log_debug(LOG_DEBUG, "DYN_TYPE_ID");
log_debug(LOG_DEBUG, "num = %d", num);
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else {
if (num > 0) {
log_debug(LOG_DEBUG, "Type Id: %d", num);
dmsg->type = num;
//state = DYN_SPACES_BEFORE_VERSION;
state = DYN_SPACES_BEFORE_BIT_FIELD;
} else {
goto error;
}
}
break;
case DYN_SPACES_BEFORE_BIT_FIELD:
if (ch == ' ') {
break;
} else if (isdigit(ch)) {
num = ch - '0';
state = DYN_BIT_FIELD;
} else {
goto error;
}
break;
case DYN_BIT_FIELD:
log_debug(LOG_DEBUG, "DYN_BIT_FIELD");
log_debug(LOG_DEBUG, "num = %d", num);
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else {
if (ch == ' ') {
log_debug(LOG_DEBUG, "DYN_BIT_FIELD : %d", num);
dmsg->bit_field = num & 0xF;
state = DYN_SPACES_BEFORE_VERSION;
} else {
goto error;
}
}
log_debug(LOG_DEBUG, "Post DYN_BIT_FIELD");
log_debug(LOG_DEBUG, "num = %d", num);
break;
case DYN_SPACES_BEFORE_VERSION:
log_debug(LOG_DEBUG, "DYN_SPACES_BEFORE_VERSION");
if (ch == ' ') {
break;
} else if (isdigit(ch)) {
num = ch - '0';
state = DYN_VERSION;
} else {
goto error;
}
break;
case DYN_VERSION:
log_debug(LOG_DEBUG, "DYN_VERSION");
log_debug(LOG_DEBUG, "num = %d", num);
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else {
if (ch == ' ') {
//log_debug(LOG_DEBUG, "VERSION : %d", num);
dmsg->version = num;
state = DYN_SPACES_BEFORE_STAR;
} else {
goto error;
}
}
break;
case DYN_SPACES_BEFORE_STAR:
//log_debug(LOG_DEBUG, "DYN_CRLF_BEFORE_STAR");
if (ch == ' ') {
break;
} else if (ch == '*') {
state = DYN_DATA_LEN;
num = 0;
} else {
goto error;
}
//else {
// state = DYN_STAR;
//}
break;
//case DYN_STAR:
//log_debug(LOG_DEBUG, "DYN_STAR");
// if (ch == '*') {
// state = DYN_DATA_LEN;
// num = 0;
// } else {
// goto error;
// }
// break;
case DYN_DATA_LEN:
log_debug(LOG_DEBUG, "DYN_DATA_LEN");
log_debug(LOG_DEBUG, "num = %d", num);
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else {
if (ch == ' ') {
log_debug(LOG_DEBUG, "Data len: %d", num);
dmsg->mlen = num;
state = DYN_SPACE_BEFORE_DATA;
num = 0;
} else {
goto error;
}
}
break;
case DYN_SPACE_BEFORE_DATA:
log_debug(LOG_DEBUG, "DYN_SPACE_BEFORE_DATA");
state = DYN_DATA;
break;
case DYN_DATA:
log_debug(LOG_DEBUG, "DYN_DATA");
p -= 1;
if (dmsg->mlen > 0) {
dmsg->data = p;
p += dmsg->mlen - 1;
state = DYN_SPACES_BEFORE_PAYLOAD_LEN;
} else {
goto error;
}
break;
case DYN_SPACES_BEFORE_PAYLOAD_LEN: //this only need in dynomite's custome msg
log_debug(LOG_DEBUG, "DYN_SPACES_BEFORE_PAYLOAD_LEN");
if (ch == ' ') {
break;
} else if (ch == '*') {
state = DYN_PAYLOAD_LEN;
num = 0;
} else {
goto error;
}
break;
case DYN_PAYLOAD_LEN:
if (isdigit(ch)) {
num = num*10 + (ch - '0');
} else {
if (ch == CR) {
log_debug(LOG_DEBUG, "Payload len: %d", num);
dmsg->plen = num;
state = DYN_CRLF_BEFORE_DONE;
num = 0;
} else {
goto error;
}
}
break;
case DYN_CRLF_BEFORE_DONE:
//log_debug(LOG_DEBUG, "DYN_CRLF_BEFORE_DONE");
if (*p == LF) {
state = DYN_DONE;
} else {
goto error;
}
break;
case DYN_DONE:
//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;
}
}
done:
dmsg->owner = r;
dmsg->source_address = r->owner->addr;
//r->mlen = mbuf_length(b);
//log_debug(LOG_DEBUG, "at done with p at %d", p);
dmsg_dump(r->dmsg);
log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "dyn: parsed req %"PRIu64" res %d "
"type %d state %d rpos %d of %d", r->id, r->result, r->type,
r->dyn_state, r->pos - b->pos, b->last - b->pos);
return true;
skip:
//log_debug(LOG_DEBUG, "This is not a dyn message");
dmsg->type = DMSG_UNKNOWN;
dmsg->owner = r;
dmsg->source_address = r->owner->addr;
return true;
error:
log_debug(LOG_ERR, "at error");
r->result = MSG_PARSE_ERROR;
r->state = state;
errno = EINVAL;
log_hexdump(LOG_INFO, b->pos, mbuf_length(b), "parsed bad req %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
r->state);
return false;
return true; //fix me
}
