void
memcache_parse_rsp(struct msg *r)
{
struct mbuf *b;
uint8_t *p, *m;
uint8_t ch;
enum {
SW_START,
SW_RSP_NUM,
SW_RSP_STR,
SW_SPACES_BEFORE_KEY,
SW_KEY,
SW_SPACES_BEFORE_FLAGS, /* 5 */
SW_FLAGS,
SW_SPACES_BEFORE_VLEN,
SW_VLEN,
SW_RUNTO_VAL,
SW_VAL, /* 10 */
SW_VAL_LF,
SW_END,
SW_RUNTO_CRLF,
SW_CRLF,
SW_ALMOST_DONE, /* 15 */
SW_SENTINEL
} state;
state = r->state;
b = STAILQ_LAST(&r->mhdr, mbuf, next);
ASSERT(!r->request);
ASSERT(!r->redis);
ASSERT(state >= SW_START && state < SW_SENTINEL);
ASSERT(b != NULL);
ASSERT(b->pos <= b->last);
/* validate the parsing marker */
ASSERT(r->pos != NULL);
ASSERT(r->pos >= b->pos && r->pos <= b->last);
for (p = r->pos; p < b->last; p++) {
ch = *p;
switch (state) {
case SW_START:
if (isdigit(ch)) {
state = SW_RSP_NUM;
} else {
state = SW_RSP_STR;
}
p = p - 1; /* go back by 1 byte */
break;
case SW_RSP_NUM:
if (r->token == NULL) {
/* rsp_start <- p; type_start <- p */
r->token = p;
}
if (isdigit(ch)) {
/* num <- num * 10 + (ch - '0') */
;
} else if (ch == ' ' || ch == CR) {
/* type_end <- p - 1 */
r->token = NULL;
r->type = MSG_RSP_MC_NUM;
p = p - 1; /* go back by 1 byte */
state = SW_CRLF;
} else {
goto error;
}
break;
case SW_RSP_STR:
if (r->token == NULL) {
/* rsp_start <- p; type_start <- p */
r->token = p;
}
if (ch == ' ' || ch == CR) {
/* type_end <- p - 1 */
m = r->token;
/* r->token = NULL; */
r->type = MSG_UNKNOWN;
switch (p - m) {
case 3:
if (str4cmp(m, 'E', 'N', 'D', '\r')) {
r->type = MSG_RSP_MC_END;
/* end_start <- m; end_end <- p - 1 */
r->end = m;
break;
}
break;
case 5:
if (str5cmp(m, 'V', 'A', 'L', 'U', 'E')) {
/*
* Encompasses responses for 'get', 'gets' and
* 'cas' command.
*/
r->type = MSG_RSP_MC_VALUE;
break;
}
if (str5cmp(m, 'E', 'R', 'R', 'O', 'R')) {
r->type = MSG_RSP_MC_ERROR;
break;
}
break;
case 6:
if (str6cmp(m, 'S', 'T', 'O', 'R', 'E', 'D')) {
r->type = MSG_RSP_MC_STORED;
break;
}
if (str6cmp(m, 'E', 'X', 'I', 'S', 'T', 'S')) {
r->type = MSG_RSP_MC_EXISTS;
break;
}
break;
case 7:
if (str7cmp(m, 'D', 'E', 'L', 'E', 'T', 'E', 'D')) {
r->type = MSG_RSP_MC_DELETED;
break;
}
break;
case 9:
if (str9cmp(m, 'N', 'O', 'T', '_', 'F', 'O', 'U', 'N', 'D')) {
r->type = MSG_RSP_MC_NOT_FOUND;
break;
}
break;
case 10:
if (str10cmp(m, 'N', 'O', 'T', '_', 'S', 'T', 'O', 'R', 'E', 'D')) {
r->type = MSG_RSP_MC_NOT_STORED;
break;
}
break;
case 12:
if (str12cmp(m, 'C', 'L', 'I', 'E', 'N', 'T', '_', 'E', 'R', 'R', 'O', 'R')) {
r->type = MSG_RSP_MC_CLIENT_ERROR;
break;
}
if (str12cmp(m, 'S', 'E', 'R', 'V', 'E', 'R', '_', 'E', 'R', 'R', 'O', 'R')) {
r->type = MSG_RSP_MC_SERVER_ERROR;
break;
}
break;
}
switch (r->type) {
case MSG_UNKNOWN:
goto error;
case MSG_RSP_MC_STORED:
case MSG_RSP_MC_NOT_STORED:
case MSG_RSP_MC_EXISTS:
case MSG_RSP_MC_NOT_FOUND:
case MSG_RSP_MC_DELETED:
state = SW_CRLF;
break;
case MSG_RSP_MC_END:
state = SW_CRLF;
break;
case MSG_RSP_MC_VALUE:
state = SW_SPACES_BEFORE_KEY;
break;
case MSG_RSP_MC_ERROR:
state = SW_CRLF;
break;
case MSG_RSP_MC_CLIENT_ERROR:
case MSG_RSP_MC_SERVER_ERROR:
state = SW_RUNTO_CRLF;
break;
default:
NOT_REACHED();
}
p = p - 1; /* go back by 1 byte */
}
break;
case SW_SPACES_BEFORE_KEY:
if (ch != ' ') {
state = SW_KEY;
p = p - 1; /* go back by 1 byte */
}
break;
case SW_KEY:
if (ch == ' ') {
/* r->token = NULL; */
state = SW_SPACES_BEFORE_FLAGS;
}
break;
case SW_SPACES_BEFORE_FLAGS:
if (ch != ' ') {
if (!isdigit(ch)) {
goto error;
}
state = SW_FLAGS;
p = p - 1; /* go back by 1 byte */
}
break;
case SW_FLAGS:
if (r->token == NULL) {
/* flags_start <- p */
/* r->token = p; */
}
if (isdigit(ch)) {
/* flags <- flags * 10 + (ch - '0') */
;
} else if (ch == ' ') {
/* flags_end <- p - 1 */
/* r->token = NULL; */
state = SW_SPACES_BEFORE_VLEN;
} else {
goto error;
}
break;
case SW_SPACES_BEFORE_VLEN:
if (ch != ' ') {
if (!isdigit(ch)) {
goto error;
}
p = p - 1; /* go back by 1 byte */
state = SW_VLEN;
r->vlen = 0;
}
break;
case SW_VLEN:
if (isdigit(ch)) {
r->vlen = r->vlen * 10 + (uint32_t)(ch - '0');
} else if (ch == ' ' || ch == CR) {
/* vlen_end <- p - 1 */
p = p - 1; /* go back by 1 byte */
/* r->token = NULL; */
state = SW_RUNTO_CRLF;
} else {
goto error;
}
break;
case SW_RUNTO_VAL:
switch (ch) {
case LF:
/* val_start <- p + 1 */
state = SW_VAL;
r->token = NULL;
break;
default:
goto error;
}
break;
case SW_VAL:
m = p + r->vlen;
if (m >= b->last) {
ASSERT(r->vlen >= (uint32_t)(b->last - p));
r->vlen -= (uint32_t)(b->last - p);
m = b->last - 1;
p = m; /* move forward by vlen bytes */
break;
}
switch (*m) {
case CR:
/* val_end <- p - 1 */
p = m; /* move forward by vlen bytes */
state = SW_VAL_LF;
break;
default:
goto error;
}
break;
case SW_VAL_LF:
switch (ch) {
case LF:
/* state = SW_END; */
state = SW_RSP_STR;
break;
default:
goto error;
}
break;
case SW_END:
if (r->token == NULL) {
if (ch != 'E') {
goto error;
}
/* end_start <- p */
r->token = p;
} else if (ch == CR) {
/* end_end <- p */
m = r->token;
r->token = NULL;
switch (p - m) {
case 3:
if (str4cmp(m, 'E', 'N', 'D', '\r')) {
r->end = m;
state = SW_ALMOST_DONE;
}
break;
default:
goto error;
}
}
break;
case SW_RUNTO_CRLF:
switch (ch) {
case CR:
if (r->type == MSG_RSP_MC_VALUE) {
state = SW_RUNTO_VAL;
} else {
state = SW_ALMOST_DONE;
}
break;
default:
break;
}
break;
case SW_CRLF:
switch (ch) {
case ' ':
break;
case CR:
state = SW_ALMOST_DONE;
break;
default:
goto error;
}
break;
case SW_ALMOST_DONE:
switch (ch) {
case LF:
/* rsp_end <- p */
goto done;
default:
goto error;
}
break;
case SW_SENTINEL:
default:
NOT_REACHED();
break;
}
}
ASSERT(p == b->last);
r->pos = p;
r->state = state;
if (b->last == b->end && r->token != NULL) {
if (state <= SW_RUNTO_VAL || state == SW_CRLF || state == SW_ALMOST_DONE) {
r->state = SW_START;
}
r->pos = r->token;
r->token = NULL;
r->result = MSG_PARSE_REPAIR;
} else {
r->result = MSG_PARSE_AGAIN;
}
log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "parsed rsp %"PRIu64" res %d "
"type %d state %d rpos %d of %d", r->id, r->result, r->type,
r->state, r->pos - b->pos, b->last - b->pos);
return;
done:
ASSERT(r->type > MSG_UNKNOWN && r->type < MSG_SENTINEL);
r->pos = p + 1;
ASSERT(r->pos <= b->last);
r->state = SW_START;
r->token = NULL;
r->result = MSG_PARSE_OK;
log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "parsed rsp %"PRIu64" res %d "
"type %d state %d rpos %d of %d", r->id, r->result, r->type,
r->state, r->pos - b->pos, b->last - b->pos);
return;
error:
r->result = MSG_PARSE_ERROR;
r->state = state;
errno = EINVAL;
log_hexdump(LOG_INFO, b->pos, mbuf_length(b), "parsed bad rsp %"PRIu64" "
"res %d type %d state %d", r->id, r->result, r->type,
r->state);
}
static req_type_t
asc_parse_type(struct conn *c, struct token *token, int ntoken)
{
char *tval; /* token value */
size_t tlen; /* token length */
req_type_t type; /* request type */
if (ntoken < 2) {
return REQ_UNKNOWN;
}
tval = token[TOKEN_COMMAND].val;
tlen = token[TOKEN_COMMAND].len;
type = REQ_UNKNOWN;
switch (tlen) {
case 3:
if (str4cmp(tval, 'g', 'e', 't', ' ')) {
type = REQ_GET;
} else if (str4cmp(tval, 's', 'e', 't', ' ')) {
type = REQ_SET;
} else if (str4cmp(tval, 'a', 'd', 'd', ' ')) {
type = REQ_ADD;
} else if (str4cmp(tval, 'c', 'a', 's', ' ')) {
type = REQ_CAS;
}
break;
case 4:
if (str4cmp(tval, 'g', 'e', 't', 's')) {
type = REQ_GETS;
} else if (str4cmp(tval, 'i', 'n', 'c', 'r')) {
type = REQ_INCR;
} else if (str4cmp(tval, 'd', 'e', 'c', 'r')) {
type = REQ_DECR;
} else if (str4cmp(tval, 'q', 'u', 'i', 't')) {
type = REQ_QUIT;
}
break;
case 5:
if (str5cmp(tval, 's', 't', 'a', 't', 's')) {
type = REQ_STATS;
}
break;
case 6:
if (str6cmp(tval, 'a', 'p', 'p', 'e', 'n', 'd')) {
type = REQ_APPEND;
} else if (str6cmp(tval, 'd', 'e', 'l', 'e', 't', 'e')) {
type = REQ_DELETE;
} else if (str6cmp(tval, 'c', 'o', 'n', 'f', 'i', 'g')) {
type = REQ_CONFIG;
}
break;
case 7:
if (str8cmp(tval, 'r', 'e', 'p', 'l', 'a', 'c', 'e', ' ')) {
type = REQ_REPLACE;
} else if (str8cmp(tval, 'p', 'r', 'e', 'p', 'e', 'n', 'd', ' ')) {
type = REQ_PREPEND;
} else if (str7cmp(tval, 'v', 'e', 'r', 's', 'i', 'o', 'n')) {
type = REQ_VERSION;
}
break;
case 9:
if (str9cmp(tval, 'f', 'l', 'u', 's', 'h', '_', 'a', 'l', 'l')) {
type = REQ_FLUSHALL;
} else if (str9cmp(tval, 'v', 'e', 'r', 'b', 'o', 's', 'i', 't', 'y')) {
type = REQ_VERBOSITY;
}
break;
default:
type = REQ_UNKNOWN;
break;
}
return type;
}
void
memcache_parse_req(struct msg *r)
{
struct mbuf *b;
uint8_t *p, *m;
uint8_t ch;
enum {
SW_START,
SW_REQ_TYPE,
SW_SPACES_BEFORE_KEY,
SW_KEY,
SW_SPACES_BEFORE_KEYS,
SW_SPACES_BEFORE_FLAGS,
SW_FLAGS,
SW_SPACES_BEFORE_EXPIRY,
SW_EXPIRY,
SW_SPACES_BEFORE_VLEN,
SW_VLEN,
SW_SPACES_BEFORE_CAS,
SW_CAS,
SW_RUNTO_VAL,
SW_VAL,
SW_SPACES_BEFORE_NUM,
SW_NUM,
SW_RUNTO_CRLF,
SW_CRLF,
SW_NOREPLY,
SW_AFTER_NOREPLY,
SW_ALMOST_DONE,
SW_SENTINEL
} state;
state = r->state;
b = STAILQ_LAST(&r->mhdr, mbuf, next);
ASSERT(r->request);
ASSERT(state >= SW_START && state < SW_SENTINEL);
ASSERT(b != NULL);
ASSERT(b->pos <= b->last);
/* validate the parsing maker */
ASSERT(r->pos != NULL);
ASSERT(r->pos >= b->pos && r->pos <= b->last);
for (p = r->pos; p < b->last; p++) {
ch = *p;
switch (state) {
case SW_START:
if (ch == ' ') {
break;
}
if (!islower(ch)) {
goto error;
}
/* req_start <- p; type_start <- p */
r->token = p;
state = SW_REQ_TYPE;
break;
case SW_REQ_TYPE:
if (ch == ' ' || ch == CR) {
/* type_end = p - 1 */
m = r->token;
r->token = NULL;
r->type = MSG_UNKNOWN;
switch (p - m) {
case 3:
if (str4cmp(m, 'g', 'e', 't', ' ')) {
r->type = MSG_REQ_MC_GET;
r->is_read = 1;
break;
}
if (str4cmp(m, 's', 'e', 't', ' ')) {
r->type = MSG_REQ_MC_SET;
r->is_read = 0;
break;
}
if (str4cmp(m, 'a', 'd', 'd', ' ')) {
r->type = MSG_REQ_MC_ADD;
r->is_read = 0;
break;
}
if (str4cmp(m, 'c', 'a', 's', ' ')) {
r->type = MSG_REQ_MC_CAS;
r->is_read = 0;
break;
}
break;
case 4:
if (str4cmp(m, 'g', 'e', 't', 's')) {
r->type = MSG_REQ_MC_GETS;
r->is_read = 1;
break;
}
if (str4cmp(m, 'i', 'n', 'c', 'r')) {
r->type = MSG_REQ_MC_INCR;
r->is_read = 0;
break;
}
if (str4cmp(m, 'd', 'e', 'c', 'r')) {
r->type = MSG_REQ_MC_DECR;
r->is_read = 0;
break;
}
if (str4cmp(m, 'q', 'u', 'i', 't')) {
r->type = MSG_REQ_MC_QUIT;
r->quit = 1;
r->is_read = 1;
break;
}
break;
case 5:
if (str5cmp(m, 't', 'o', 'u', 'c', 'h')) {
r->type = MSG_REQ_MC_TOUCH;
r->is_read = 0;
break;
}
break;
case 6:
if (str6cmp(m, 'a', 'p', 'p', 'e', 'n', 'd')) {
r->type = MSG_REQ_MC_APPEND;
r->is_read = 0;
break;
}
if (str6cmp(m, 'd', 'e', 'l', 'e', 't', 'e')) {
r->type = MSG_REQ_MC_DELETE;
r->is_read = 0;
break;
}
break;
case 7:
if (str7cmp(m, 'p', 'r', 'e', 'p', 'e', 'n', 'd')) {
r->type = MSG_REQ_MC_PREPEND;
r->is_read = 0;
break;
}
if (str7cmp(m, 'r', 'e', 'p', 'l', 'a', 'c', 'e')) {
r->type = MSG_REQ_MC_REPLACE;
r->is_read = 0;
break;
}
break;
}
switch (r->type) {
case MSG_REQ_MC_GET:
case MSG_REQ_MC_GETS:
case MSG_REQ_MC_DELETE:
case MSG_REQ_MC_CAS:
case MSG_REQ_MC_SET:
case MSG_REQ_MC_ADD:
case MSG_REQ_MC_REPLACE:
case MSG_REQ_MC_APPEND:
case MSG_REQ_MC_PREPEND:
case MSG_REQ_MC_INCR:
case MSG_REQ_MC_DECR:
case MSG_REQ_MC_TOUCH:
if (ch == CR) {
goto error;
}
state = SW_SPACES_BEFORE_KEY;
break;
case MSG_REQ_MC_QUIT:
p = p - 1; /* go back by 1 byte */
state = SW_CRLF;
break;
case MSG_UNKNOWN:
goto error;
default:
NOT_REACHED();
}
} else if (!islower(ch)) {
goto error;
}
break;
case SW_SPACES_BEFORE_KEY:
if (ch != ' ') {
r->token = p;
r->key_start = p;
state = SW_KEY;
}
break;
case SW_KEY:
if (ch == ' ' || ch == CR) {
if ((p - r->key_start) > MEMCACHE_MAX_KEY_LENGTH) {
log_error("parsed bad req %"PRIu64" of type %d with key "
"prefix '%.*s...' and length %d that exceeds "
"maximum key length", r->id, r->type, 16,
r->key_start, p - r->key_start);
goto error;
}
r->key_end = p;
r->token = NULL;
/* get next state */
if (memcache_storage(r)) {
state = SW_SPACES_BEFORE_FLAGS;
} else if (memcache_arithmetic(r) || memcache_touch(r)) {
state = SW_SPACES_BEFORE_NUM;
} else if (memcache_delete(r)) {
state = SW_RUNTO_CRLF;
} else if (memcache_retrieval(r)) {
state = SW_SPACES_BEFORE_KEYS;
} else {
state = SW_RUNTO_CRLF;
}
if (ch == CR) {
if (memcache_storage(r) || memcache_arithmetic(r)) {
goto error;
}
p = p - 1; /* go back by 1 byte */
}
}
break;
case SW_SPACES_BEFORE_KEYS:
ASSERT(memcache_retrieval(r));
switch (ch) {
case ' ':
break;
case CR:
state = SW_ALMOST_DONE;
break;
default:
r->token = p;
goto fragment;
}
break;
case SW_SPACES_BEFORE_FLAGS:
if (ch != ' ') {
if (!isdigit(ch)) {
goto error;
}
/* flags_start <- p; flags <- ch - '0' */
r->token = p;
state = SW_FLAGS;
}
break;
case SW_FLAGS:
if (isdigit(ch)) {
/* flags <- flags * 10 + (ch - '0') */
;
} else if (ch == ' ') {
/* flags_end <- p - 1 */
r->token = NULL;
state = SW_SPACES_BEFORE_EXPIRY;
} else {
goto error;
}
break;
case SW_SPACES_BEFORE_EXPIRY:
if (ch != ' ') {
if (!isdigit(ch)) {
goto error;
}
/* expiry_start <- p; expiry <- ch - '0' */
r->token = p;
state = SW_EXPIRY;
}
break;
case SW_EXPIRY:
if (isdigit(ch)) {
/* expiry <- expiry * 10 + (ch - '0') */
;
} else if (ch == ' ') {
/* expiry_end <- p - 1 */
r->token = NULL;
state = SW_SPACES_BEFORE_VLEN;
} else {
goto error;
}
break;
case SW_SPACES_BEFORE_VLEN:
if (ch != ' ') {
if (!isdigit(ch)) {
goto error;
}
/* vlen_start <- p */
r->token = p;
r->vlen = (uint32_t)(ch - '0');
state = SW_VLEN;
}
break;
case SW_VLEN:
if (isdigit(ch)) {
r->vlen = r->vlen * 10 + (uint32_t)(ch - '0');
} else if (memcache_cas(r)) {
if (ch != ' ') {
goto error;
}
/* vlen_end <- p - 1 */
p = p - 1; /* go back by 1 byte */
r->token = NULL;
state = SW_SPACES_BEFORE_CAS;
} else if (ch == ' ' || ch == CR) {
/* vlen_end <- p - 1 */
p = p - 1; /* go back by 1 byte */
r->token = NULL;
state = SW_RUNTO_CRLF;
} else {
goto error;
}
break;
case SW_SPACES_BEFORE_CAS:
if (ch != ' ') {
if (!isdigit(ch)) {
goto error;
}
/* cas_start <- p; cas <- ch - '0' */
r->token = p;
state = SW_CAS;
}
break;
case SW_CAS:
if (isdigit(ch)) {
/* cas <- cas * 10 + (ch - '0') */
;
} else if (ch == ' ' || ch == CR) {
/* cas_end <- p - 1 */
p = p - 1; /* go back by 1 byte */
r->token = NULL;
state = SW_RUNTO_CRLF;
} else {
goto error;
}
break;
case SW_RUNTO_VAL:
switch (ch) {
case LF:
/* val_start <- p + 1 */
state = SW_VAL;
break;
default:
goto error;
}
break;
case SW_VAL:
m = p + r->vlen;
if (m >= b->last) {
ASSERT(r->vlen >= (uint32_t)(b->last - p));
r->vlen -= (uint32_t)(b->last - p);
m = b->last - 1;
p = m; /* move forward by vlen bytes */
break;
}
switch (*m) {
case CR:
/* val_end <- p - 1 */
p = m; /* move forward by vlen bytes */
state = SW_ALMOST_DONE;
break;
default:
goto error;
}
break;
case SW_SPACES_BEFORE_NUM:
if (ch != ' ') {
if (!(isdigit(ch) || ch == '-')) {
goto error;
}
/* num_start <- p; num <- ch - '0' */
r->token = p;
state = SW_NUM;
}
break;
case SW_NUM:
if (isdigit(ch)) {
/* num <- num * 10 + (ch - '0') */
;
} else if (ch == ' ' || ch == CR) {
r->token = NULL;
/* num_end <- p - 1 */
p = p - 1; /* go back by 1 byte */
state = SW_RUNTO_CRLF;
} else {
goto error;
}
break;
case SW_RUNTO_CRLF:
switch (ch) {
case ' ':
break;
case 'n':
if (memcache_storage(r) || memcache_arithmetic(r) || memcache_delete(r) || memcache_touch(r)) {
/* noreply_start <- p */
r->token = p;
state = SW_NOREPLY;
} else {
goto error;
}
break;
case CR:
if (memcache_storage(r)) {
state = SW_RUNTO_VAL;
} else {
state = SW_ALMOST_DONE;
}
break;
default:
goto error;
}
break;
case SW_NOREPLY:
switch (ch) {
case ' ':
case CR:
m = r->token;
if (((p - m) == 7) && str7cmp(m, 'n', 'o', 'r', 'e', 'p', 'l', 'y')) {
ASSERT(memcache_storage(r) || memcache_arithmetic(r) || memcache_delete(r) || memcache_touch(r));
r->token = NULL;
/* noreply_end <- p - 1 */
r->expect_datastore_reply = 0;
state = SW_AFTER_NOREPLY;
p = p - 1; /* go back by 1 byte */
} else {
goto error;
}
}
break;
case SW_AFTER_NOREPLY:
switch (ch) {
case ' ':
break;
case CR:
if (memcache_storage(r)) {
state = SW_RUNTO_VAL;
} else {
state = SW_ALMOST_DONE;
}
break;
default:
goto error;
}
break;
case SW_CRLF:
switch (ch) {
case ' ':
break;
case CR:
state = SW_ALMOST_DONE;
break;
default:
goto error;
}
break;
case SW_ALMOST_DONE:
switch (ch) {
case LF:
/* req_end <- p */
goto done;
default:
goto error;
}
break;
case SW_SENTINEL:
default:
NOT_REACHED();
break;
}
}
/*
* At this point, buffer from b->pos to b->last has been parsed completely
* but we haven't been able to reach to any conclusion. Normally, this
* means that we have to parse again starting from the state we are in
* after more data has been read. The newly read data is either read into
* a new mbuf, if existing mbuf is full (b->last == b->end) or into the
* existing mbuf.
*
* The only exception to this is when the existing mbuf is full (b->last
* is at b->end) and token marker is set, which means that we have to
* copy the partial token into a new mbuf and parse again with more data
* read into new mbuf.
*/
ASSERT(p == b->last);
r->pos = p;
r->state = state;
if (b->last == b->end && r->token != NULL) {
r->pos = r->token;
r->token = NULL;
r->result = MSG_PARSE_REPAIR;
} else {
r->result = MSG_PARSE_AGAIN;
}
log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "parsed req %"PRIu64" res %d "
"type %d state %d rpos %d of %d", r->id, r->result, r->type,
r->state, r->pos - b->pos, b->last - b->pos);
return;
fragment:
ASSERT(p != b->last);
ASSERT(r->token != NULL);
r->pos = r->token;
r->token = NULL;
r->state = state;
r->result = MSG_PARSE_FRAGMENT;
log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "parsed req %"PRIu64" res %d "
"type %d state %d rpos %d of %d", r->id, r->result, r->type,
r->state, r->pos - b->pos, b->last - b->pos);
return;
done:
ASSERT(r->type > MSG_UNKNOWN && r->type < MSG_SENTINEL);
r->pos = p + 1;
ASSERT(r->pos <= b->last);
r->state = SW_START;
r->result = MSG_PARSE_OK;
log_hexdump(LOG_VERB, b->pos, mbuf_length(b), "parsed req %"PRIu64" res %d "
"type %d state %d rpos %d of %d", r->id, r->result, r->type,
r->state, r->pos - b->pos, b->last - b->pos);
return;
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);
}
