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@@ -1,147 +1,150 b'' | |||
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1 | 1 | #!/usr/bin/env python |
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2 | 2 | |
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3 | 3 | __doc__ = """Tiny HTTP Proxy. |
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4 | 4 | |
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5 | 5 | This module implements GET, HEAD, POST, PUT and DELETE methods |
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6 | 6 | on BaseHTTPServer, and behaves as an HTTP proxy. The CONNECT |
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7 | 7 | method is also implemented experimentally, but has not been |
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8 | 8 | tested yet. |
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9 | 9 | |
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10 | 10 | Any help will be greatly appreciated. SUZUKI Hisao |
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11 | 11 | """ |
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12 | 12 | |
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13 | 13 | __version__ = "0.2.1" |
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14 | 14 | |
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15 | 15 | import BaseHTTPServer, select, socket, SocketServer, urlparse, os |
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16 | 16 | |
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17 | 17 | class ProxyHandler (BaseHTTPServer.BaseHTTPRequestHandler): |
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18 | 18 | __base = BaseHTTPServer.BaseHTTPRequestHandler |
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19 | 19 | __base_handle = __base.handle |
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20 | 20 | |
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21 | 21 | server_version = "TinyHTTPProxy/" + __version__ |
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22 | 22 | rbufsize = 0 # self.rfile Be unbuffered |
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23 | 23 | |
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24 | 24 | def handle(self): |
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25 | 25 | (ip, port) = self.client_address |
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26 | 26 | allowed = getattr(self, 'allowed_clients', None) |
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27 | 27 | if allowed is not None and ip not in allowed: |
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28 | 28 | self.raw_requestline = self.rfile.readline() |
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29 | 29 | if self.parse_request(): |
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30 | 30 | self.send_error(403) |
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31 | 31 | else: |
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32 | 32 | self.__base_handle() |
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33 | 33 | |
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34 | 34 | def log_request(self, code='-', size='-'): |
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35 | 35 | xheaders = [h for h in self.headers.items() if h[0].startswith('x-')] |
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36 | 36 | self.log_message('"%s" %s %s%s', |
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37 | 37 | self.requestline, str(code), str(size), |
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38 | 38 | ''.join([' %s:%s' % h for h in sorted(xheaders)])) |
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39 | 39 | |
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40 | 40 | def _connect_to(self, netloc, soc): |
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41 | 41 | i = netloc.find(':') |
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42 | 42 | if i >= 0: |
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43 | 43 | host_port = netloc[:i], int(netloc[i + 1:]) |
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44 | 44 | else: |
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45 | 45 | host_port = netloc, 80 |
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46 | 46 | print "\t" "connect to %s:%d" % host_port |
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47 | 47 | try: soc.connect(host_port) |
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48 | 48 | except socket.error, arg: |
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49 | 49 | try: msg = arg[1] |
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50 | 50 | except (IndexError, TypeError): msg = arg |
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51 | 51 | self.send_error(404, msg) |
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52 | 52 | return 0 |
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53 | 53 | return 1 |
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54 | 54 | |
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55 | 55 | def do_CONNECT(self): |
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56 | 56 | soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
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57 | 57 | try: |
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58 | 58 | if self._connect_to(self.path, soc): |
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59 | 59 | self.log_request(200) |
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60 | 60 | self.wfile.write(self.protocol_version + |
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61 | 61 | " 200 Connection established\r\n") |
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62 | 62 | self.wfile.write("Proxy-agent: %s\r\n" % self.version_string()) |
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63 | 63 | self.wfile.write("\r\n") |
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64 | 64 | self._read_write(soc, 300) |
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65 | 65 | finally: |
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66 | 66 | print "\t" "bye" |
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67 | 67 | soc.close() |
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68 | 68 | self.connection.close() |
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69 | 69 | |
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70 | 70 | def do_GET(self): |
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71 | 71 | (scm, netloc, path, params, query, fragment) = urlparse.urlparse( |
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72 | 72 | self.path, 'http') |
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73 | 73 | if scm != 'http' or fragment or not netloc: |
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74 | 74 | self.send_error(400, "bad url %s" % self.path) |
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75 | 75 | return |
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76 | 76 | soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
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77 | 77 | try: |
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78 | 78 | if self._connect_to(netloc, soc): |
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79 | 79 | self.log_request() |
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80 | 80 | soc.send("%s %s %s\r\n" % ( |
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81 | 81 | self.command, |
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82 | 82 | urlparse.urlunparse(('', '', path, params, query, '')), |
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83 | 83 | self.request_version)) |
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84 | 84 | self.headers['Connection'] = 'close' |
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85 | 85 | del self.headers['Proxy-Connection'] |
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86 | 86 | for key_val in self.headers.items(): |
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87 | 87 | soc.send("%s: %s\r\n" % key_val) |
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88 | 88 | soc.send("\r\n") |
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89 | 89 | self._read_write(soc) |
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90 | 90 | finally: |
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91 | 91 | print "\t" "bye" |
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92 | 92 | soc.close() |
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93 | 93 | self.connection.close() |
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94 | 94 | |
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95 | 95 | def _read_write(self, soc, max_idling=20): |
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96 | 96 | iw = [self.connection, soc] |
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97 | 97 | ow = [] |
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98 | 98 | count = 0 |
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99 | 99 | while True: |
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100 | 100 | count += 1 |
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101 | 101 | (ins, _, exs) = select.select(iw, ow, iw, 3) |
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102 | 102 | if exs: |
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103 | 103 | break |
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104 | 104 | if ins: |
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105 | 105 | for i in ins: |
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106 | 106 | if i is soc: |
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107 | 107 | out = self.connection |
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108 | 108 | else: |
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109 | 109 | out = soc |
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110 | try: | |
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110 | 111 | data = i.recv(8192) |
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112 | except socket.error: | |
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113 | break | |
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111 | 114 | if data: |
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112 | 115 | out.send(data) |
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113 | 116 | count = 0 |
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114 | 117 | else: |
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115 | 118 | print "\t" "idle", count |
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116 | 119 | if count == max_idling: |
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117 | 120 | break |
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118 | 121 | |
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119 | 122 | do_HEAD = do_GET |
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120 | 123 | do_POST = do_GET |
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121 | 124 | do_PUT = do_GET |
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122 | 125 | do_DELETE = do_GET |
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123 | 126 | |
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124 | 127 | class ThreadingHTTPServer (SocketServer.ThreadingMixIn, |
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125 | 128 | BaseHTTPServer.HTTPServer): |
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126 | 129 | def __init__(self, *args, **kwargs): |
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127 | 130 | BaseHTTPServer.HTTPServer.__init__(self, *args, **kwargs) |
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128 | 131 | a = open("proxy.pid", "w") |
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129 | 132 | a.write(str(os.getpid()) + "\n") |
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130 | 133 | a.close() |
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131 | 134 | |
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132 | 135 | if __name__ == '__main__': |
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133 | 136 | from sys import argv |
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134 | 137 | if argv[1:] and argv[1] in ('-h', '--help'): |
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135 | 138 | print argv[0], "[port [allowed_client_name ...]]" |
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136 | 139 | else: |
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137 | 140 | if argv[2:]: |
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138 | 141 | allowed = [] |
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139 | 142 | for name in argv[2:]: |
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140 | 143 | client = socket.gethostbyname(name) |
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141 | 144 | allowed.append(client) |
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142 | 145 | print "Accept: %s (%s)" % (client, name) |
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143 | 146 | ProxyHandler.allowed_clients = allowed |
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144 | 147 | del argv[2:] |
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145 | 148 | else: |
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146 | 149 | print "Any clients will be served..." |
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147 | 150 | BaseHTTPServer.test(ProxyHandler, ThreadingHTTPServer) |
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