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191
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1
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2 local format = string.format;
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3 local send_s2s = require "core.s2smanager".send_to_host;
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4 local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
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5 local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
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6
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7 local log = require "util.logger".init("mod_dialback");
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8
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9 local xmlns_dialback = "jabber:server:dialback";
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10
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11 add_handler({"s2sin_unauthed", "s2sin"}, "verify", xmlns_dialback,
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219
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12 function (origin, stanza)
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13 -- We are being asked to verify the key, to ensure it was generated by us
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14 log("debug", "verifying dialback key...");
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15 local attr = stanza.attr;
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16 -- FIXME: Grr, ejabberd breaks this one too?? it is black and white in XEP-220 example 34
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17 --if attr.from ~= origin.to_host then error("invalid-from"); end
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18 local type;
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19 if s2s_verify_dialback(attr.id, attr.from, attr.to, stanza[1]) then
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20 type = "valid"
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21 else
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22 type = "invalid"
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23 log("warn", "Asked to verify a dialback key that was incorrect. An imposter is claiming to be %s?", attr.to);
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24 end
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25 origin.sends2s(format("<db:verify from='%s' to='%s' id='%s' type='%s'>%s</db:verify>", attr.to, attr.from, attr.id, type, stanza[1]));
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26 end);
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191
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27
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28 add_handler("s2sin_unauthed", "result", xmlns_dialback,
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219
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29 function (origin, stanza)
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30 -- he wants to be identified through dialback
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31 -- We need to check the key with the Authoritative server
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32 local attr = stanza.attr;
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33 local attr = stanza.attr;
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34 origin.from_host = attr.from;
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35 origin.to_host = attr.to;
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36 origin.dialback_key = stanza[1];
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37 log("debug", "asking %s if key %s belongs to them", origin.from_host, origin.dialback_key);
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38 send_s2s(origin.to_host, origin.from_host,
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39 format("<db:verify from='%s' to='%s' id='%s'>%s</db:verify>", origin.to_host, origin.from_host,
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40 origin.streamid, origin.dialback_key));
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41 hosts[origin.from_host].dialback_verifying = origin;
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42 end);
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191
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43
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44 add_handler({ "s2sout_unauthed", "s2sout" }, "verify", xmlns_dialback,
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219
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45 function (origin, stanza)
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46 if origin.dialback_verifying then
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47 local valid;
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48 local attr = stanza.attr;
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49 if attr.type == "valid" then
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50 s2s_make_authenticated(origin.dialback_verifying);
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51 valid = "valid";
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52 else
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53 -- Warn the original connection that is was not verified successfully
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54 log("warn", "dialback for "..(origin.dialback_verifying.from_host or "(unknown)").." failed");
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55 valid = "invalid";
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191
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56 end
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219
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57 origin.dialback_verifying.sends2s(format("<db:result from='%s' to='%s' id='%s' type='%s'>%s</db:result>",
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58 attr.from, attr.to, attr.id, valid, origin.dialback_verifying.dialback_key));
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59 end
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60 end);
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191
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61
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62 add_handler({ "s2sout_unauthed", "s2sout" }, "result", xmlns_dialback,
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219
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63 function (origin, stanza)
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64 if stanza.attr.type == "valid" then
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65 s2s_make_authenticated(origin);
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66 else
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67 -- FIXME
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68 error("dialback failed!");
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69 end
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70 end);
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