From 2bb5679c368ead156afb61f3cd0ee66f9618a4d4 Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Fri, 29 Jan 2016 14:04:41 +1100
Subject: [PATCH] Receive and parse upstreamed block submits on client
 interface

---
 src/connector.c | 63 ++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 46 insertions(+), 17 deletions(-)

diff --git a/src/connector.c b/src/connector.c
index be124b2a..6f818c1e 100644
--- a/src/connector.c
+++ b/src/connector.c
@@ -163,6 +163,13 @@ struct connector_data {
 
 typedef struct connector_data cdata_t;
 
+struct binmsg {
+	char *buf;
+	int len;
+};
+
+typedef struct binmsg binmsg_t;
+
 /* Increase the reference count of instance */
 static void __inc_instance_ref(client_instance_t *client)
 {
@@ -480,9 +487,9 @@ static void send_client_msg(cdata_t *cdata, const int64_t id, char *buf)
 /* Client is holding a reference count from being on the epoll list */
 static void parse_client_msg(cdata_t *cdata, client_instance_t *client)
 {
+	int buflen, ret, slen = 0, blen = 0;
 	ckpool_t *ckp = cdata->ckp;
-	int buflen, ret;
-	char *msg, *eol;
+	char *msg, *eol, *bkey;
 	json_t *val;
 
 retry:
@@ -510,9 +517,22 @@ reparse:
 	eol = memchr(client->buf, '\n', client->bufofs);
 	if (!eol)
 		goto retry;
+	if (unlikely(client->bufofs > 5 && (bkey = strstr(eol - 5, "bkey\n" )))) {
+		int len;
+
+		/* We have bkey data. Do we have enough to parse it? */
+		slen = bkey - client->buf - 1;
+		len = client->bufofs - slen;
+		if (len < BKEY_LENOFS + BKEY_LENLEN)
+			goto retry;
+		blen = bkey_len(bkey);
+		if (len < blen)
+			goto retry;
+		buflen = slen + blen;
+	} else
+		buflen = eol - client->buf + 1;
 
 	/* Do something useful with this message now */
-	buflen = eol - client->buf + 1;
 	if (unlikely(buflen > MAX_MSGSIZE && !client->remote)) {
 		LOGNOTICE("Client id %"PRId64" fd %d message oversize, disconnecting", client->id, client->fd);
 		invalidate_client(ckp, cdata, client);
@@ -535,6 +555,10 @@ reparse:
 	} else {
 		char *s;
 
+		if (unlikely(blen)) {
+			bkey = msg + slen + 1;
+			json_append_bkeys(val, bkey, blen);
+		}
 		if (client->passthrough) {
 			int64_t passthrough_id;
 
@@ -1101,21 +1125,20 @@ out:
 	return ret;
 }
 
-static void usend_process(ckpool_t *ckp, char *buf)
+static void usend_process(ckpool_t *ckp, binmsg_t *binmsg)
 {
 	cdata_t *cdata = ckp->data;
 	connsock_t *cs = &cdata->upstream_cs;
-	int len, sent;
+	int sent;
 
-	if (unlikely(!buf || !strlen(buf))) {
+	if (unlikely(!binmsg->buf || !strlen(binmsg->buf))) {
 		LOGERR("Send empty message to usend_process");
 		goto out;
 	}
-	LOGDEBUG("Sending upstream msg: %s", buf);
-	len = strlen(buf);
+	LOGDEBUG("Sending upstream msg: %s", binmsg->buf);
 	while (42) {
-		sent = write_socket(cs->fd, buf, len);
-		if (sent == len)
+		sent = write_socket(cs->fd, binmsg->buf, binmsg->len);
+		if (sent == binmsg->len)
 			break;
 		if (cs->fd > 0) {
 			LOGWARNING("Upstream pool failed, attempting reconnect while caching messages");
@@ -1126,7 +1149,8 @@ static void usend_process(ckpool_t *ckp, char *buf)
 		while (!connect_upstream(ckp, cs));
 	}
 out:
-	free(buf);
+	free(binmsg->buf);
+	free(binmsg);
 }
 
 static void parse_remote_submitblock(ckpool_t *ckp, const json_t *val, const char *buf)
@@ -1144,10 +1168,11 @@ static void parse_remote_submitblock(ckpool_t *ckp, const json_t *val, const cha
 
 static void ping_upstream(cdata_t *cdata)
 {
-	char *buf;
+	binmsg_t *binmsg = ckalloc(sizeof(binmsg_t));
 
-	ASPRINTF(&buf, "{\"method\":\"ping\"}\n");
-	ckmsgq_add(cdata->upstream_sends, buf);
+	ASPRINTF(&binmsg->buf, "{\"method\":\"ping\"}\n");
+	binmsg->len = strlen(binmsg->buf);
+	ckmsgq_add(cdata->upstream_sends, binmsg);
 }
 
 static json_t *urecv_loads(const char *buf, const int len)
@@ -1423,10 +1448,14 @@ retry:
 	if (likely(buf[0] == '{')) {
 		process_client_msg(cdata, buf, umsg->msglen);
 	} else if (cmdmatch(buf, "upstream=")) {
-		char *msg = strdup(buf + 9);
+		binmsg_t *binmsg = ckalloc(sizeof(binmsg_t));
+
+		binmsg->buf = ckalloc(umsg->msglen);
+		binmsg->len = umsg->msglen - 9;
+		memcpy(binmsg->buf, buf + 9, binmsg->len);
 
-		LOGDEBUG("Upstreaming %s", msg);
-		ckmsgq_add(cdata->upstream_sends, msg);
+		LOGDEBUG("Upstreaming %s", umsg->buf);
+		ckmsgq_add(cdata->upstream_sends, binmsg);
 		goto retry;
 	} else if (cmdmatch(buf, "dropclient")) {
 		client_instance_t *client;