prosody
cf70342985df
util/jid.lua

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util/jid.lua @ 738:cf70342985df

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author Matthew Wild <mwild1@gmail.com>
date Fri, 16 Jan 2009 23:34:45 +0000
parent 717:ab428c579cbc
child 758:b1885732e979
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1 -- Prosody IM v0.2
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 Waqas Hussain
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4 --
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5 -- This program is free software; you can redistribute it and/or
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6 -- modify it under the terms of the GNU General Public License
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7 -- as published by the Free Software Foundation; either version 2
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8 -- of the License, or (at your option) any later version.
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9 --
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10 -- This program is distributed in the hope that it will be useful,
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11 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 -- GNU General Public License for more details.
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14 --
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15 -- You should have received a copy of the GNU General Public License
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16 -- along with this program; if not, write to the Free Software
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17 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18 --
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20
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22 local match = string.match;
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23 local nodeprep = require "util.encodings".stringprep.nodeprep;
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24 local nameprep = require "util.encodings".stringprep.nameprep;
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25 local resourceprep = require "util.encodings".stringprep.resourceprep;
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27 module "jid"
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28
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29 function split(jid)
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30 if not jid then return; end
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31 local node, nodepos = match(jid, "^([^@]+)@()");
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32 local host, hostpos = match(jid, "^([^@/]+)()", nodepos)
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33 if node and not host then return nil, nil, nil; end
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34 local resource = match(jid, "^/(.+)$", hostpos);
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35 if (not host) or ((not resource) and #jid >= hostpos) then return nil, nil, nil; end
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36 return node, host, resource;
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37 end
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38
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39 function bare(jid)
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40 local node, host = split(jid);
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41 if node and host then
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42 return node.."@"..host;
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43 end
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44 return host;
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45 end
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46
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47 function prepped_split(jid)
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48 local node, host, resource = split(jid);
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49 if host then
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50 host = nameprep(host);
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51 if not host then return; end
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52 if node then
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53 node = nodeprep(node);
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54 if not node then return; end
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55 end
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56 if resource then
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57 resource = resourceprep(resource);
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58 if not resource then return; end
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59 end
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60 return node, host, resource;
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61 end
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62 end
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63
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64 function prep(jid)
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65 local node, host, resource = prepped_split(jid);
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66 if host then
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67 if node then
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68 host = node .. "@" .. host;
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69 end
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70 if resource then
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71 host = host .. "/" .. resource;
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72 end
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73 end
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74 return host;
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75 end
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76
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77 return _M;