1 | import gutenbach.ipp |
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2 | import gutenbach.ipp.constants as const |
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3 | import logging |
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4 | import time |
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5 | |
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6 | logging.basicConfig(level=logging.DEBUG) |
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7 | |
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8 | def handler_for(operation): |
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9 | """A decorator method to mark a function with the operation id |
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10 | that it handles. This value will be stored in |
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11 | 'func.ipp_operation'. |
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12 | |
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13 | """ |
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14 | |
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15 | def f(func): |
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16 | func.ipp_operation = operation |
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17 | return func |
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18 | return f |
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19 | |
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20 | class IPPRequestHandler(object): |
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21 | """A generic base class for IPP requests. Provides a dispatch |
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22 | function to conver request operation ids to handler functions. |
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23 | |
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24 | """ |
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25 | |
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26 | def _ipp_dispatch(self, request): |
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27 | for d in dir(self): |
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28 | if getattr(getattr(self, d), "ipp_operation", None) == request.operation_id: |
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29 | return getattr(self, d) |
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30 | return self.unknown_operation |
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31 | |
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32 | def unknown_operation(self, request, response): |
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33 | print "Received UNKNOWN OPERATION %x" % request.operation_id |
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34 | response.operation_id = const.StatusCodes.OPERATION_NOT_SUPPORTED |
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35 | |
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36 | class PrinterRequestHandler(IPPRequestHandler): |
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37 | """This handles requests that are printer-specific: for example, |
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38 | the printer's name or state. |
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39 | |
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40 | """ |
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41 | |
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42 | def __init__(self, name): |
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43 | self.name = name |
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44 | |
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45 | @handler_for(const.Operations.GET_PRINTER_ATTRIBUTES) |
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46 | def get_printer_attributes(self, request, response): |
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47 | printer_attributes = ipp.AttributeGroup(const.AttributeTags.PRINTER) |
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48 | printer_attributes.append(ipp.Attribute( |
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49 | "printer-uri-supported", |
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50 | [ipp.Value(ipp.Tags.URI, "ipp://localhost:8000/printers/" + self.name)])) |
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51 | |
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52 | printer_attributes.append(ipp.Attribute( |
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53 | "uri-authentication-supported", |
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54 | [ipp.Value(ipp.Tags.KEYWORD, "none")])) |
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55 | |
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56 | printer_attributes.append(ipp.Attribute( |
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57 | "uri-security-supported", |
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58 | [ipp.Value(ipp.Tags.KEYWORD, "none")])) |
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59 | |
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60 | printer_attributes.append(ipp.Attribute( |
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61 | "printer-name", |
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62 | [ipp.Value(ipp.Tags.NAME_WITHOUT_LANGUAGE, self.name)])) |
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63 | |
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64 | printer_attributes.append(ipp.Attribute( |
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65 | "printer-state", |
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66 | [ipp.Value(ipp.Tags.ENUM, const.PrinterStates.IDLE)])) |
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67 | |
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68 | printer_attributes.append(ipp.Attribute( |
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69 | "printer-state-reasons", |
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70 | [ipp.Value(ipp.Tags.KEYWORD, "none")])) |
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71 | |
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72 | printer_attributes.append(ipp.Attribute( |
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73 | "ipp-versions-supported", |
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74 | [ipp.Value(ipp.Tags.KEYWORD, "1.0"), |
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75 | ipp.Value(ipp.Tags.KEYWORD, "1.1")])) |
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76 | |
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77 | # XXX: We should query ourself for the supported operations |
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78 | printer_attributes.append(ipp.Attribute( |
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79 | "operations-supported", |
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80 | [ipp.Value(ipp.Tags.ENUM, const.Operations.GET_JOBS)])) |
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81 | |
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82 | printer_attributes.append(ipp.Attribute( |
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83 | "charset-configured", |
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84 | [ipp.Value(ipp.Tags.CHARSET, "utf-8")])) |
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85 | |
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86 | printer_attributes.append(ipp.Attribute( |
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87 | "charset-supported", |
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88 | [ipp.Value(ipp.Tags.CHARSET, "utf-8")])) |
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89 | |
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90 | printer_attributes.append(ipp.Attribute( |
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91 | "natural-language-configured", |
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92 | [ipp.Value(ipp.Tags.NATURAL_LANGUAGE, "en-us")])) |
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93 | |
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94 | printer_attributes.append(ipp.Attribute( |
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95 | "generated-natural-language-supported", |
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96 | [ipp.Value(ipp.Tags.NATURAL_LANGUAGE, "en-us")])) |
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97 | |
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98 | printer_attributes.append(ipp.Attribute( |
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99 | "document-format-default", |
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100 | [ipp.Value(ipp.Tags.MIME_MEDIA_TYPE, "application/octet-stream")])) |
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101 | |
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102 | printer_attributes.append(ipp.Attribute( |
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103 | "document-format-supported", |
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104 | [ipp.Value(ipp.Tags.MIME_MEDIA_TYPE, "application/octet-stream"), |
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105 | ipp.Value(ipp.Tags.MIME_MEDIA_TYPE, "audio/mp3")])) |
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106 | |
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107 | printer_attributes.append(ipp.Attribute( |
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108 | "printer-is-accepting-jobs", |
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109 | [ipp.Value(ipp.Tags.BOOLEAN, True)])) |
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110 | |
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111 | printer_attributes.append(ipp.Attribute( |
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112 | "queued-job-count", |
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113 | [ipp.Value(ipp.Tags.INTEGER, 1)])) |
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114 | |
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115 | printer_attributes.append(ipp.Attribute( |
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116 | "pdl-override-supported", |
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117 | [ipp.Value(ipp.Tags.KEYWORD, "not-attempted")])) |
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118 | |
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119 | printer_attributes.append(ipp.Attribute( |
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120 | "printer-up-time", |
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121 | [ipp.Value(ipp.Tags.INTEGER, int(time.time()))])) |
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122 | |
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123 | printer_attributes.append(ipp.Attribute( |
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124 | "compression-supported", |
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125 | [ipp.Value(ipp.Tags.KEYWORD, "none")])) |
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126 | |
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127 | response.attribute_groups.append(printer_attributes) |
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128 | response.operation_id = const.StatusCodes.OK |
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129 | print "get_printer_attributes called" |
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130 | |
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131 | class RootRequestHandler(IPPRequestHandler): |
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132 | printers = [PrinterRequestHandler(name="sipbmp3")] |
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133 | |
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134 | @handler_for(const.Operations.CUPS_GET_DEFAULT) |
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135 | def cups_get_default(self, request, response): |
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136 | print "get_default called" |
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137 | return self.printers[0].get_printer_attributes(request, response) |
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138 | |
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139 | @handler_for(const.Operations.CUPS_GET_PRINTERS) |
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140 | def cups_get_printers(self, request, response): |
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141 | print "get_printers called" |
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142 | response.operation_id = const.StatusCodes.OK |
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143 | # Each printer will append a new printer attribute group. |
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144 | for p in self.printers: |
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145 | p.get_printer_attributes(request, response) |
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146 | |
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147 | @handler_for(const.Operations.CUPS_GET_CLASSES) |
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148 | def cups_get_classes(self, request, response): |
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149 | print "get_classes called" |
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150 | response.operation_id = const.StatusCodes.OK |
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151 | # We have no printer classes, so nothing to return. |
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152 | |
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153 | class GutenbachIPPHandler(BaseHTTPServer.BaseHTTPRequestHandler): |
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154 | def setup(self): |
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155 | self.root = RootRequestHandler() |
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156 | BaseHTTPServer.BaseHTTPRequestHandler.setup(self) |
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157 | |
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158 | def handle_one_request(self): |
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159 | self.raw_requestline = self.rfile.readline() |
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160 | if not self.raw_requestline: |
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161 | self.close_connection = 1 |
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162 | return |
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163 | if not self.parse_request(): # An error code has been sent, just exit |
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164 | return |
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165 | self.handle_ipp() |
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166 | |
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167 | def handle_ipp(self): |
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168 | # Receive a request |
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169 | length = int(self.headers.getheader('content-length', 0)) |
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170 | request = ipp.Request(request=self.rfile, length=length) |
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171 | print "Received request:", repr(request) |
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172 | |
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173 | # Attributes |
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174 | attributes = [ |
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175 | ipp.Attribute( |
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176 | 'attributes-charset', |
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177 | [ipp.Value(ipp.Tags.CHARSET, 'utf-8')]), |
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178 | ipp.Attribute( |
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179 | 'attributes-natural-language', |
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180 | [ipp.Value(ipp.Tags.NATURAL_LANGUAGE, 'en-us')]) |
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181 | ] |
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182 | # Attribute group |
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183 | attribute_group = ipp.AttributeGroup( |
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184 | const.AttributeTags.OPERATION, |
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185 | attributes) |
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186 | |
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187 | # Set up the response |
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188 | response_kwargs = {} |
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189 | response_kwargs['version'] = request.version |
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190 | response_kwargs['operation_id'] = const.StatusCodes.INTERNAL_ERROR |
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191 | response_kwargs['request_id'] = request.request_id |
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192 | response_kwargs['attribute_groups'] = [attribute_group] |
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193 | response = ipp.Request(**response_kwargs) |
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194 | |
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195 | # Get the handler and pass it the request and response objects |
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196 | handler = self.root._ipp_dispatch(request) |
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197 | handler(request, response) |
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198 | print "Sending response:", repr(response) |
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199 | |
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200 | # Send the response across HTTP |
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201 | self.send_response(200, "o hai") |
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202 | self.send_header("Content-Type", "application/ipp") |
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203 | self.send_header("Connection", "close") |
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204 | self.end_headers() |
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205 | self.wfile.write(response.packed_value) |
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206 | |
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207 | def get_jobs(self, request, response_kwargs): |
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208 | """get-jobs response""" |
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209 | |
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210 | # Job attributes |
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211 | job_attributes = [ |
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212 | ipp.Attribute( |
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213 | 'job-id', |
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214 | [ipp.Value(ipp.Tags.INTEGER, 12345)]), |
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215 | ipp.Attribute( |
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216 | 'job-name', |
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217 | [ipp.Value(ipp.Tags.NAME_WITHOUT_LANGUAGE, 'foo')]), |
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218 | ipp.Attribute( |
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219 | 'job-originating-user-name', |
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220 | [ipp.Value(ipp.Tags.NAME_WITHOUT_LANGUAGE, 'jhamrick')]), |
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221 | ipp.Attribute( |
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222 | 'job-k-octets', |
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223 | [ipp.Value(ipp.Tags.INTEGER, 1)]), |
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224 | ipp.Attribute( |
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225 | 'job-state', |
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226 | [ipp.Value(ipp.Tags.ENUM, const.JobStates.HELD)]), |
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227 | ipp.Attribute( |
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228 | 'job-printer-uri', |
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229 | [ipp.Value(ipp.Tags.URI, 'ipp://localhost:8000/printers/foo')]) |
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230 | ] |
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231 | # Job attribute group |
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232 | job_attribute_group = ipp.AttributeGroup( |
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233 | const.AttributeTags.JOB, |
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234 | job_attributes) |
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235 | |
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236 | # Operation attributions |
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237 | op_attributes = [ |
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238 | ipp.Attribute( |
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239 | 'attributes-charset', |
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240 | [ipp.Value(ipp.Tags.CHARSET, 'utf-8')]), |
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241 | ipp.Attribute( |
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242 | 'attributes-natural-language', |
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243 | [ipp.Value(ipp.Tags.NATURAL_LANGUAGE, 'en-us')]) |
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244 | ] |
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245 | # Operation attribution group |
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246 | op_attributes_group = ipp.AttributeGroup( |
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247 | const.AttributeTags.OPERATION, |
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248 | op_attributes) |
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249 | |
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250 | # Setup the actual response dictionary |
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251 | response_kwargs['attribute_groups'] = [op_attributes_group,job_attribute_group] |
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252 | response_kwargs['operation_id'] = const.StatusCodes.OK |
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253 | |
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254 | return response_kwargs |
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255 | |
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256 | ##### Printer Commands |
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257 | |
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258 | def print_job(self, request): |
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259 | pass |
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260 | |
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261 | def validate_job(self, request): |
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262 | pass |
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263 | |
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264 | #def get_jobs(self, request): |
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265 | # pass |
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266 | |
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267 | def print_uri(self, request): |
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268 | pass |
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269 | |
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270 | def create_job(self, request): |
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271 | pass |
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272 | |
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273 | def pause_printer(self, request): |
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274 | pass |
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275 | |
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276 | def resume_printer(self, request): |
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277 | pass |
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278 | |
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279 | def set_printer_attributes(self, request): |
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280 | pass |
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281 | |
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282 | ##### Job Commands |
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283 | |
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284 | def cancel_job(self, request): |
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285 | pass |
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286 | |
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287 | def get_job_attributes(self, request): |
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288 | pass |
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289 | |
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290 | def send_document(self, request): |
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291 | pass |
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292 | |
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293 | def send_uri(self, request): |
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294 | pass |
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295 | |
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296 | def set_job_attributes(self, request): |
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297 | pass |
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298 | |
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299 | def cups_get_document(self, request): |
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300 | pass |
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301 | |
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302 | def restart_job(self, request): |
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303 | pass |
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304 | |
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305 | def promote_job(self, request): |
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306 | pass |
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