From 4bf876dffb1d3aadcd76c7af97e37e77ff38ac64 Mon Sep 17 00:00:00 2001
From: elbandi <bandispam@gmail.com>
Date: Tue, 26 Apr 2016 13:56:47 +0000
Subject: [PATCH] new stratum protocol

---
 sgminer.c | 33 ++++++++++++---------------------
 1 file changed, 12 insertions(+), 21 deletions(-)

diff --git a/sgminer.c b/sgminer.c
index 3f59ce92..a0e4ed1d 100644
--- a/sgminer.c
+++ b/sgminer.c
@@ -5604,7 +5604,7 @@ static void *stratum_sthread(void *userdata)
     if (unlikely(!work))
       quit(1, "Stratum q returned empty work");
 
-    if ((pool->algorithm.type != ALGO_DECRED && unlikely(work->nonce2_len > 8)) || (pool->algorithm.type == ALGO_DECRED && unlikely(work->nonce2_len > 16))) {
+    if (unlikely(work->nonce2_len > 8)) {
       applog(LOG_ERR, "%s asking for inappropriately long nonce2 length %d", get_pool_name(pool), (int)work->nonce2_len);
       applog(LOG_ERR, "Not attempting to submit shares");
       free_work(work);
@@ -5635,11 +5635,7 @@ static void *stratum_sthread(void *userdata)
     }
     __bin2hex(noncehex, (const unsigned char *)&nonce, 4);
 
-    if (pool->algorithm.type == ALGO_DECRED) {
-      memcpy(nonce2, work->data + 144, work->nonce2_len);
-    } else {
-      *((uint64_t *)nonce2) = htole64(work->nonce2);
-    }
+    *((uint64_t *)nonce2) = htole64(work->nonce2);
     __bin2hex(nonce2hex, nonce2, work->nonce2_len);
     memset(s, 0, 1024);
 
@@ -6113,25 +6109,20 @@ void set_target_neoscrypt(unsigned char *target, double diff, const int thr_id)
 static void gen_stratum_work(struct pool *pool, struct work *work)
 {
   unsigned char merkle_root[32], merkle_sha[64];
-  int datasize = 128;
   uint32_t *data32, *swap32;
   uint64_t nonce2le;
   int i, j;
 
   cg_wlock(&pool->data_lock);
 
-  if (pool->algorithm.type == ALGO_DECRED) {
-    datasize = 180;
-    work->nonce2 = pool->nonce2++;
-    work->nonce2_len = pool->n2size;
-  } else {
+  nonce2le = htole64(pool->nonce2);
+  if (pool->algorithm.type != ALGO_DECRED) {
     /* Update coinbase. Always use an LE encoded nonce2 to fill in values
     * from left to right and prevent overflow errors with small n2sizes */
-    nonce2le = htole64(pool->nonce2);
     memcpy(pool->coinbase + pool->nonce2_offset, &nonce2le, pool->n2size);
-    work->nonce2 = pool->nonce2++;
-    work->nonce2_len = pool->n2size;
   }
+  work->nonce2 = pool->nonce2++;
+  work->nonce2_len = pool->n2size;
 
   /* Downgrade to a read lock to read off the pool variables */
   cg_dwlock(&pool->data_lock);
@@ -6180,17 +6171,15 @@ static void gen_stratum_work(struct pool *pool, struct work *work)
   }
   else if (pool->algorithm.type == ALGO_DECRED) {
     uint16_t vote = (uint16_t) (opt_vote << 1) | 1;
+    size_t nonce2_offset = MIN(pool->n1_len, 36);
     memcpy(work->data, pool->header_bin, 4); // version
     flip32(work->data + 4, pool->header_bin + 4); // prevhash
     memcpy(work->data + 4 + 32, pool->coinbase, MIN((int)pool->swork.cb_len, 108));
-    memcpy(work->data + 144, pool->nonce1bin, MIN(pool->n1_len, 36));
     memcpy(work->data + 100, &vote, 2);
-    ((uint32_t *)work->data)[36] = work->nonce2;
-//    ((uint32_t *)work->data)[36] = 2;
-    ((uint32_t *)work->data)[37] = ((rand() * 4) << 8) | work->thr_id;
-//    ((uint32_t *)work->data)[37] = 0x0000a400;
-    for (i = 39; i < 45; i++)
+    for (i = 36; i < 45; i++)
       ((uint32_t *)work->data)[i] = 0;
+    memcpy(work->data + 144, pool->nonce1bin, nonce2_offset);
+    memcpy(work->data + 144 + nonce2_offset, &nonce2le, pool->n2size);
   }
   else {
     data32 = (uint32_t *)merkle_sha;
@@ -6214,6 +6203,8 @@ static void gen_stratum_work(struct pool *pool, struct work *work)
 
   if (opt_debug) {
     char *header, *merkle_hash;
+    int datasize = 128;
+    if (pool->algorithm.type == ALGO_DECRED) datasize = 180;
 
     header = bin2hex(work->data, datasize);
     if (pool->algorithm.type != ALGO_DECRED) {