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1 Printing via CUPS and attaching files to labfolder logbooks |
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2 =========================================================== |
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3 |
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4 If you want to print a webpage as PDF and send it to onf of labfolder's logbooks you could create a CUPS printer for each logbook that uses the labfolder API to attach this PDF to a newly created entry. First, you need to install CUPS on the virtual machine that runs labfolder:: |
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5 |
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6 sudo apt-get install cups cups-client cups-bsd |
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7 |
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8 Next, you need to configure ``/etc/cups/cupsd.conf``. This is how it looks like on *lftest*:: |
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9 |
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10 # Sample configuration file for the CUPS scheduler. See "man cupsd.conf" for a |
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11 # complete description of this file. |
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12 |
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13 # Log general information in error_log - change "warn" to "debug" |
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14 # for troubleshooting... |
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15 LogLevel debug |
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16 |
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17 # Deactivate CUPS' internal logrotating, as we provide a better one, especially |
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18 # LogLevel debug2 gets usable now |
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19 MaxLogSize 0 |
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20 |
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21 # Administrator user group... |
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22 SystemGroup lpadmin |
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23 ServerAdmin weiher@fhi-berlin.mpg.de |
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24 |
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25 HostNameLookups On |
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26 ServerAlias * |
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27 |
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28 # Only listen for connections from the local machine. |
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29 Listen lftest.rz-berlin.mpg.de:631 |
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30 Listen /var/run/cups/cups.sock |
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31 |
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32 # Show shared printers on the local network. |
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33 Browsing Off |
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34 BrowseOrder allow,deny |
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35 BrowseAllow all |
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36 BrowseLocalProtocols CUPS dnssd |
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37 BrowseAddress @LOCAL |
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38 |
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39 # Default authentication type, when authentication is required... |
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40 DefaultAuthType Basic |
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41 |
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42 # Web interface setting... |
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43 WebInterface Yes |
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44 |
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45 # Restrict access to the server... |
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46 <Location /> |
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47 Satisfy All |
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48 Allow localhost |
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49 Allow 141.14.* |
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50 Allow 172.16.* |
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51 Allow 192.* |
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52 Allow all |
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53 # Allow shared printing and remote administration... |
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54 Order allow,deny |
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55 Allow all |
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56 </Location> |
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57 |
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58 # Restrict access to the admin pages... |
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59 <Location /admin> |
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60 Order deny,allow |
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61 Satisfy All |
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62 AuthType Basic |
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63 Require user @SYSTEM |
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64 Deny All |
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65 Allow localhost |
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66 Allow 141.14.* |
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67 Allow 172.16.* |
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68 </Location> |
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69 |
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70 # Restrict access to configuration files... |
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71 <Location /admin/conf> |
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72 Order deny,allow |
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73 AuthType Default |
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74 Require user @SYSTEM |
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75 Satisfy All |
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76 Require user root |
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77 Deny All |
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78 Allow 127.0.0.1 |
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79 Allow 141.14.* |
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80 Allow 172.16.* |
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81 </Location> |
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82 |
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83 # Set the default printer/job policies... |
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84 <Policy default> |
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85 ... # probably as in the original |
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86 </Policy> |
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87 |
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88 Now, you need to create a file system that will hold all CUPS printers, For example, the printers belonging to the logbooks *FEL/operating* and *FEL/installation* could be put in ``/usr/local/labfolder/printers/FEL``. Copy the lplisten script from the git repository ``https://github.molgen.mpg.de/weiher/elog2labfolder.git`` to ``/usr/local/labfolder/printers/FEL/operating`` and to ``.../FEL/installation``. Also, create a pipe that redirects the printer input to the lplisten script:: |
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89 |
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90 /usr/local/labfolder/printers/FEL/operating$ mkfifo prnt |
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91 |
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92 Adapt rights and ownership of lplisten and prnt:: |
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93 |
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94 $ chmod 744 lplisten |
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95 $ chmod 666 prnt |
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96 $ chown lp:lpadmin lplisten prnt |
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97 |
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98 Add the labfolder user to the lpadmin group in /etc/group:: |
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99 |
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100 lpadmin:x:115:labfolder |
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101 |
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102 Now, create the CUPS printers via the web interface at ``http://lftest.rz-berlin.mpg.de:631/`` (as configured in cupsd.conf). For example, the *operating* printer points at ``FEL/operating/prnt``. The ready configured printer looks like this in the web interface: |
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103 |
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104 .. image:: _static/cups_print_operating.png |
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105 :width: 100 % |
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106 :align: center |
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107 |
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108 To prevent ``DENIED`` errors from apparmor install and set the following:: |
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109 |
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110 sudo apt-get install apparmor-utils apparmor-profiles |
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111 sudo aa-complain cupsd |
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112 |
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113 Restart the CUPS server:: |
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114 |
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115 $ service cupsd restart |
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116 |
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117 Start the lplisten script in the background:: |
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118 |
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119 /usr/local/labfolder/printers/FEL/operating$ ./lplisten & |
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120 |
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121 The last thing you need to do is to set up a printer *operating* on your local machine. In Ubuntu Gnome hit Alt+F2 keys and enter ``system-config-printer``. In this printer config interface add a new printer *operating* as follows: |
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122 |
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123 .. image:: _static/create_local_printer01.png |
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124 :width: 70 % |
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125 :align: center |
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126 |
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127 .. image:: _static/create_local_printer02.png |
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128 :width: 70 % |
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129 :align: center |
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130 |
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131 .. image:: _static/create_local_printer03.png |
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132 :width: 70 % |
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133 :align: center |
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134 |
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135 .. image:: _static/create_local_printer04.png |
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136 :width: 70 % |
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137 :align: center |
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138 |
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139 .. image:: _static/create_local_printer05.png |
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140 :width: 70 % |
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141 :align: center |
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142 |
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143 .. image:: _static/create_local_printer06.png |
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144 :width: 70 % |
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145 :align: center |
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146 |
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147 .. image:: _static/create_local_printer07.png |
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148 :width: 70 % |
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149 :align: center |
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150 |