1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
#!/usr/bin/env python3
# Copyright (c) 2020 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
import argparse
import io
import requests
import subprocess
import sys
DEFAULT_GLOBAL_FAUCET = 'https://signetfaucet.com/claim'
DEFAULT_GLOBAL_CAPTCHA = 'https://signetfaucet.com/captcha'
GLOBAL_FIRST_BLOCK_HASH = '00000086d6b2636cb2a392d45edc4ec544a10024d30141c9adf4bfd9de533b53'
# braille unicode block
BASE = 0x2800
BIT_PER_PIXEL = [
[0x01, 0x08],
[0x02, 0x10],
[0x04, 0x20],
[0x40, 0x80],
]
BW = 2
BH = 4
# imagemagick or compatible fork (used for converting SVG)
CONVERT = 'convert'
class PPMImage:
'''
Load a PPM image (Pillow-ish API).
'''
def __init__(self, f):
if f.readline() != b'P6\n':
raise ValueError('Invalid ppm format: header')
line = f.readline()
(width, height) = (int(x) for x in line.rstrip().split(b' '))
if f.readline() != b'255\n':
raise ValueError('Invalid ppm format: color depth')
data = f.read(width * height * 3)
stride = width * 3
self.size = (width, height)
self._grid = [[tuple(data[stride * y + 3 * x:stride * y + 3 * (x + 1)]) for x in range(width)] for y in range(height)]
def getpixel(self, pos):
return self._grid[pos[1]][pos[0]]
def print_image(img, threshold=128):
'''Print black-and-white image to terminal in braille unicode characters.'''
x_blocks = (img.size[0] + BW - 1) // BW
y_blocks = (img.size[1] + BH - 1) // BH
for yb in range(y_blocks):
line = []
for xb in range(x_blocks):
ch = BASE
for y in range(BH):
for x in range(BW):
try:
val = img.getpixel((xb * BW + x, yb * BH + y))
except IndexError:
pass
else:
if val[0] < threshold:
ch |= BIT_PER_PIXEL[y][x]
line.append(chr(ch))
print(''.join(line))
parser = argparse.ArgumentParser(description='Script to get coins from a faucet.', epilog='You may need to start with double-dash (--) when providing bitcoin-cli arguments.')
parser.add_argument('-c', '--cmd', dest='cmd', default='bitcoin-cli', help='bitcoin-cli command to use')
parser.add_argument('-f', '--faucet', dest='faucet', default=DEFAULT_GLOBAL_FAUCET, help='URL of the faucet')
parser.add_argument('-g', '--captcha', dest='captcha', default=DEFAULT_GLOBAL_CAPTCHA, help='URL of the faucet captcha, or empty if no captcha is needed')
parser.add_argument('-a', '--addr', dest='addr', default='', help='Bitcoin address to which the faucet should send')
parser.add_argument('-p', '--password', dest='password', default='', help='Faucet password, if any')
parser.add_argument('-n', '--amount', dest='amount', default='0.001', help='Amount to request (0.001-0.1, default is 0.001)')
parser.add_argument('-i', '--imagemagick', dest='imagemagick', default=CONVERT, help='Path to imagemagick convert utility')
parser.add_argument('bitcoin_cli_args', nargs='*', help='Arguments to pass on to bitcoin-cli (default: -signet)')
args = parser.parse_args()
if args.bitcoin_cli_args == []:
args.bitcoin_cli_args = ['-signet']
def bitcoin_cli(rpc_command_and_params):
argv = [args.cmd] + args.bitcoin_cli_args + rpc_command_and_params
try:
return subprocess.check_output(argv).strip().decode()
except FileNotFoundError:
print('The binary', args.cmd, 'could not be found.')
exit(1)
except subprocess.CalledProcessError:
cmdline = ' '.join(argv)
print(f'-----\nError while calling "{cmdline}" (see output above).')
exit(1)
if args.faucet.lower() == DEFAULT_GLOBAL_FAUCET:
# Get the hash of the block at height 1 of the currently active signet chain
curr_signet_hash = bitcoin_cli(['getblockhash', '1'])
if curr_signet_hash != GLOBAL_FIRST_BLOCK_HASH:
print('The global faucet cannot be used with a custom Signet network. Please use the global signet or setup your custom faucet to use this functionality.\n')
exit(1)
else:
# For custom faucets, don't request captcha by default.
if args.captcha == DEFAULT_GLOBAL_CAPTCHA:
args.captcha = ''
if args.addr == '':
# get address for receiving coins
args.addr = bitcoin_cli(['getnewaddress', 'faucet', 'bech32'])
data = {'address': args.addr, 'password': args.password, 'amount': args.amount}
# Store cookies
# for debugging: print(session.cookies.get_dict())
session = requests.Session()
if args.captcha != '': # Retrieve a captcha
try:
res = session.get(args.captcha)
except:
print('Unexpected error when contacting faucet:', sys.exc_info()[0])
exit(1)
# Convert SVG image to PPM, and load it
try:
rv = subprocess.run([args.imagemagick, '-', '-depth', '8', 'ppm:-'], input=res.content, check=True, capture_output=True)
except FileNotFoundError:
print('The binary', args.imagemagick, 'could not be found. Please make sure ImageMagick (or a compatible fork) is installed and that the correct path is specified.')
exit(1)
img = PPMImage(io.BytesIO(rv.stdout))
# Terminal interaction
print_image(img)
print('Enter captcha: ', end='')
data['captcha'] = input()
try:
res = session.post(args.faucet, data=data)
except:
print('Unexpected error when contacting faucet:', sys.exc_info()[0])
exit(1)
# Display the output as per the returned status code
if res:
# When the return code is in between 200 and 400 i.e. successful
print(res.text)
elif res.status_code == 404:
print('The specified faucet URL does not exist. Please check for any server issues/typo.')
elif res.status_code == 429:
print('The script does not allow for repeated transactions as the global faucet is rate-limitied to 1 request/IP/day. You can access the faucet website to get more coins manually')
else:
print(f'Returned Error Code {res.status_code}\n{res.text}\n')
print('Please check the provided arguments for their validity and/or any possible typo.')
|
