1 | import gutenbach.ipp as ipp |
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2 | |
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3 | from . import InvalidPrinterStateException, InvalidJobException |
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4 | from . import GutenbachPrinter |
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5 | from . import GutenbachRequestHandler |
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6 | |
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7 | import BaseHTTPServer |
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8 | import logging |
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9 | import sys |
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10 | import tempfile |
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11 | |
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12 | # initialize logger |
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13 | logger = logging.getLogger(__name__) |
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14 | |
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15 | class IPPServer(BaseHTTPServer.BaseHTTPRequestHandler): |
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16 | |
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17 | def send_continue(self): |
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18 | self.send_response(100, "continue") |
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19 | self.send_header("Content-Type", "application/ipp") |
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20 | self.end_headers() |
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21 | |
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22 | def send_ok(self, response): |
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23 | logger.debug(repr(response)) |
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24 | binary, data_file = response.packed_value |
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25 | |
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26 | self.send_response(200, "ok") |
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27 | self.send_header("Content-Type", "application/ipp") |
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28 | self.send_header("Connection", "close") |
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29 | self.end_headers() |
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30 | |
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31 | self.wfile.write(binary) |
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32 | if data_file is not None: |
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33 | data = data_file.read(1024) |
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34 | while data != '': |
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35 | self.wfile.write(data) |
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36 | data = data_file.read(1024) |
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37 | |
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38 | def log_request(self, code=0, size=0): |
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39 | logger.info("response (%s)" % code) |
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40 | |
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41 | def log_message(self, fmt, *args): |
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42 | logger.info(fmt % args) |
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43 | |
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44 | def read_chunks(self): |
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45 | size = sys.maxint |
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46 | totalsize = 0 |
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47 | |
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48 | with tempfile.SpooledTemporaryFile() as tmp: |
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49 | while size > 0: |
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50 | a, b = self.rfile.read(2) |
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51 | size = a + b |
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52 | while not (a == "\r" and b == "\n"): |
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53 | a = b |
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54 | b = self.rfile.read(1) |
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55 | size += b |
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56 | size = int(size[:-2], base=16) |
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57 | totalsize += size |
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58 | chunk = self.rfile.read(size) |
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59 | clrf = self.rfile.read(2) |
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60 | if clrf != "\r\n": |
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61 | raise ipp.errors.ServerErrorInternalError( |
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62 | "clrf != \\r\\n (is '%s')" % clrf) |
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63 | tmp.write(chunk) |
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64 | |
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65 | tmp.seek(0) |
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66 | request = ipp.Request(request=tmp, length=totalsize) |
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67 | |
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68 | return request |
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69 | |
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70 | def do_POST(self): |
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71 | length = int(self.headers.getheader('content-length', 0)) |
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72 | expect = self.headers.getheader('expect', None) |
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73 | encoding = self.headers.getheader('transfer-encoding', None) |
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74 | |
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75 | logger.info("request %s (%d bytes)" % (self.command, length)) |
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76 | logger.debug(str(self.headers)) |
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77 | |
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78 | # Parse the request |
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79 | if length == 0 and encoding == "chunked": |
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80 | request = self.read_chunks() |
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81 | else: |
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82 | request = ipp.Request(request=self.rfile, length=length) |
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83 | |
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84 | # Get the handler and pass it the request and response |
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85 | # objects. It will fill in values for the response object or |
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86 | # throw a fatal error. |
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87 | logger.debug("request: %s" % repr(request)) |
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88 | response = GutenbachRequestHandler(self.server.gutenbach_printer).handle(request) |
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89 | self.send_ok(response) |
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