contrib: remove getwork-based pyminer

As the `getwork` API doesn't exist anymore, currently this script is useless.

It would be nice to have a `getblocktemplate`-based Python example of a
miner, but there is no point in keeping this one around except to
confuse people.

4 files changed, 0 insertions, 313 deletions

diff --git a/contrib/README.md b/contrib/README.md
index 63b1875d30..dae975e9ef 100644
--- a/contrib/README.md
+++ b/contrib/README.md
@@ -19,10 +19,6 @@ Contains the script `github-merge.sh` for merging github pull requests securely
 ### [Linearize](/contrib/linearize) ###
 Construct a linear, no-fork, best version of the blockchain.
 
-### [PyMiner](/contrib/pyminer) ###
-
-This is a 'getwork' CPU mining client for Bitcoin. It is pure-python, and therefore very, very slow.  The purpose is to provide a reference implementation of a miner in order to study and develop other mining programs.
-
 ### [Qos](/contrib/qos) ###
 
 A Linux bash script that will set up traffic control (tc) to limit the outgoing bandwidth for connections to the Bitcoin network. This means one can have an always-on bitcoind instance running, and another local bitcoind/bitcoin-qt instance which connects to this node and receives blocks from it.
diff --git a/contrib/pyminer/README.md b/contrib/pyminer/README.md
deleted file mode 100644
index 3b20f2fdea..0000000000
--- a/contrib/pyminer/README.md
+++ /dev/null
@@ -1,8 +0,0 @@
-### PyMiner ###
-
-This is a 'getwork' CPU mining client for Bitcoin. It is pure-python, and therefore very, very slow.  The purpose is to provide a reference implementation of a miner, for study.
-
-### Other Resources ###
-
-- [BitcoinTalk Thread](https://bitcointalk.org/index.php?topic=3546.0)
-- [Jgarzik Repo](https://github.com/jgarzik/pyminer)
\ No newline at end of file
diff --git a/contrib/pyminer/example-config.cfg b/contrib/pyminer/example-config.cfg
deleted file mode 100644
index 103e7c1372..0000000000
--- a/contrib/pyminer/example-config.cfg
+++ /dev/null
@@ -1,32 +0,0 @@
-
-#
-# RPC login details
-#
-host=127.0.0.1
-port=8332
-
-rpcuser=myusername
-rpcpass=mypass
-
-
-#
-# mining details
-#
-
-threads=4
-
-# periodic rate for requesting new work, if solution not found
-scantime=60
-
-
-#
-# misc.
-#
-
-# not really used right now
-logdir=/tmp/pyminer
-
-# set to 1, to enable hashmeter output
-hashmeter=0
-
-
diff --git a/contrib/pyminer/pyminer.py b/contrib/pyminer/pyminer.py
deleted file mode 100755
index 706a10b39d..0000000000
--- a/contrib/pyminer/pyminer.py
+++ /dev/null
@@ -1,269 +0,0 @@
-#!/usr/bin/python
-#
-# Copyright (c) 2011 The Bitcoin developers
-# Distributed under the MIT/X11 software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#
-
-import sys
-from multiprocessing import Process
-import time
-import struct
-import hashlib
-import base64
-import re
-import httplib
-import json
-
-ERR_SLEEP = 15
-MAX_NONCE = 1000000L
-
-settings = {}
-
-
-class BitcoinRPC:
-    object_id = 1
-
-    def __init__(self, host, port, username, password):
-        authpair = "{0}:{1}".format(username, password)
-        self.authhdr = "Basic {0}".format(base64.b64encode(authpair))
-        self.conn = httplib.HTTPConnection(host, port, strict=False, timeout=30)
-
-    def rpc(self, method, params=None):
-        self.object_id += 1
-        obj = {'version' : '1.1',
-               'method' : method,
-               'id' : self.object_id,
-               'params' : params or []}
-
-        self.conn.request('POST', '/', json.dumps(obj),
-            { 'Authorization' : self.authhdr,
-              'Content-type' : 'application/json' })
-
-        resp = self.conn.getresponse()
-
-        if resp is None:
-            print("JSON-RPC: no response")
-            return None
-
-        body = resp.read()
-        resp_obj = json.loads(body)
-
-        if resp_obj is None:
-            print("JSON-RPC: cannot JSON-decode body")
-            return None
-
-        if 'error' in resp_obj and resp_obj['error'] != None:
-            return resp_obj['error']
-
-        if 'result' not in resp_obj:
-            print("JSON-RPC: no result in object")
-            return None
-
-        return resp_obj['result']
-
-    def getblockcount(self):
-        return self.rpc('getblockcount')
-
-    def getwork(self, data=None):
-        return self.rpc('getwork', data)
-
-def uint32(x):
-    return x & 0xffffffffL
-
-def bytereverse(x):
-    return uint32(( ((x) << 24) | (((x) << 8) & 0x00ff0000) |
-            (((x) >> 8) & 0x0000ff00) | ((x) >> 24) ))
-
-def bufreverse(in_buf):
-    out_words = []
-
-    for i in range(0, len(in_buf), 4):
-        word = struct.unpack('@I', in_buf[i:i+4])[0]
-        out_words.append(struct.pack('@I', bytereverse(word)))
-
-    return ''.join(out_words)
-
-def wordreverse(in_buf):
-    out_words = []
-
-    for i in range(0, len(in_buf), 4):
-        out_words.append(in_buf[i:i+4])
-
-    out_words.reverse()
-
-    return ''.join(out_words)
-
-
-class Miner:
-    def __init__(self, id):
-        self.id = id
-        self.max_nonce = MAX_NONCE
-
-    def work(self, datastr, targetstr):
-        # decode work data hex string to binary
-        static_data = datastr.decode('hex')
-        static_data = bufreverse(static_data)
-
-        # the first 76b of 80b do not change
-        blk_hdr = static_data[:76]
-
-        # decode 256-bit target value
-        targetbin = targetstr.decode('hex')
-        targetbin = targetbin[::-1]    # byte-swap and dword-swap
-        targetbin_str = targetbin.encode('hex')
-        target = long(targetbin_str, 16)
-
-        # pre-hash first 76b of block header
-        static_hash = hashlib.sha256()
-        static_hash.update(blk_hdr)
-
-        for nonce in xrange(self.max_nonce):
-
-            # encode 32-bit nonce value
-            nonce_bin = struct.pack("<I", nonce)
-
-            # hash final 4b, the nonce value
-            hash1_o = static_hash.copy()
-            hash1_o.update(nonce_bin)
-            hash1 = hash1_o.digest()
-
-            # sha256 hash of sha256 hash
-            hash_o = hashlib.sha256()
-            hash_o.update(hash1)
-            hash = hash_o.digest()
-
-            # quick test for winning solution: high 32 bits zero?
-            if hash[-4:] != '\0\0\0\0':
-                continue
-
-            # convert binary hash to 256-bit Python long
-            hash = bufreverse(hash)
-            hash = wordreverse(hash)
-
-            hash_str = hash.encode('hex')
-            long_hash = long(hash_str, 16)
-
-            # proof-of-work test:  hash < target
-            if long_hash < target:
-                print(time.asctime(), "PROOF-OF-WORK found: "
-                                      "{0:064x}".format(long_hash))
-                return (nonce + 1, nonce_bin)
-            else:
-                print(time.asctime(), "PROOF-OF-WORK false"
-                                      "positive {0:064x}".format(long_hash))
-
-        return (nonce + 1, None)
-
-    def submit_work(self, rpc, original_data, nonce_bin):
-        nonce_bin = bufreverse(nonce_bin)
-        nonce = nonce_bin.encode('hex')
-        solution = original_data[:152] + nonce + original_data[160:256]
-        param_arr = [ solution ]
-        result = rpc.getwork(param_arr)
-
-        print(time.asctime(), "--> Upstream RPC result:", result)
-
-    def iterate(self, rpc):
-        work = rpc.getwork()
-
-        if work is None:
-            time.sleep(ERR_SLEEP)
-            return
-
-        if 'data' not in work or 'target' not in work:
-            time.sleep(ERR_SLEEP)
-            return
-
-        time_start = time.time()
-
-        (hashes_done, nonce_bin) = self.work(work['data'],
-                             work['target'])
-
-        time_end = time.time()
-        time_diff = time_end - time_start
-
-        self.max_nonce = long(
-            (hashes_done * settings['scantime']) / time_diff)
-
-        if self.max_nonce > 0xfffffffaL:
-            self.max_nonce = 0xfffffffaL
-
-        if settings['hashmeter']:
-            print("HashMeter({:d}): {:d} hashes, {:.2f} Khash/sec".format(
-                  self.id, hashes_done, (hashes_done / 1000.0) / time_diff))
-
-        if nonce_bin is not None:
-            self.submit_work(rpc, work['data'], nonce_bin)
-
-    def loop(self):
-        rpc = BitcoinRPC(settings['host'], settings['port'],
-                 settings['rpcuser'], settings['rpcpass'])
-
-        if rpc is not None:
-
-            while True:
-                self.iterate(rpc)
-        
-        self.conn.close()
-
-
-def miner_thread(id):
-    miner = Miner(id)
-    miner.loop()
-
-if __name__ == '__main__':
-    if len(sys.argv) != 2:
-        print("Usage: pyminer.py CONFIG-FILE")
-        sys.exit(1)
-
-    with open(sys.argv[1]) as f:
-
-        for line in f:
-            # skip comment lines
-            m = re.search('^\s*#', line)
-            if m:
-                continue
-
-            # parse key=value lines
-            m = re.search('^(\w+)\s*=\s*(\S.*)$', line)
-            if m is None:
-                continue
-
-            settings[m.group(1)] = m.group(2)
-
-    settings.setdefault('host', '127.0.0.1')
-    settings.setdefault('port', 8332)
-    settings.setdefault('threads', 1)
-    settings.setdefault('hashmeter', 0)
-    settings.setdefault('scantime', 30L)
-
-    if 'rpcuser' not in settings or 'rpcpass' not in settings:
-        print("Missing username and/or password in cfg file")
-        sys.exit(1)
-
-    settings['port'] = int(settings['port'])
-    settings['threads'] = int(settings['threads'])
-    settings['hashmeter'] = int(settings['hashmeter'])
-    settings['scantime'] = long(settings['scantime'])
-
-    thread_list = []
-
-    for thread_id in range(settings['threads']):
-        p = Process(target=miner_thread, args=(thread_id,))
-        p.start()
-        thread_list.append(p)
-        time.sleep(1) # stagger threads
-
-    print(settings['threads'], "mining threads started")
-
-    print(time.asctime(), "Miner Starts - {0}:{1}".format(settings['host'],
-                                                          settings['port']))
-    try:
-        for thread_process in thread_list:
-            thread_process.join()
-    except KeyboardInterrupt:
-        pass
-
-    print(time.asctime(), "Miner Stops - {0}:{1}".format(settings['host'],
-                                                         settings['port']))