Mercurial > prosody-modules

annotate mod_register_json/mod_register_json.lua @ 651:78a23a7dc613

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mod_register_json: fixed typo, added https/http switch and default value to it.
author Marco Cirillo <maranda@lightwitch.org>
date Sun, 29 Apr 2012 13:44:21 +0000
parents 6f0e0d6790a7
children 81d269f97ea2
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1 -- Expose a simple servlet to handle user registrations from web pages
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2 -- via JSON.
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3 --
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4 -- A Good chunk of the code is from mod_data_access.lua by Kim Alvefur
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5 -- aka Zash.
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6
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7 local jid_prep = require "util.jid".prep
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8 local jid_split = require "util.jid".split
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9 local usermanager = require "core.usermanager"
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10 local b64_decode = require "util.encodings".base64.decode
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11 local json_decode = require "util.json".decode
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12 local os_time = os.time
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13 local nodeprep = require "util.encodings".stringprep.nodeprep
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14
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15 module:depends("http")
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16 module:set_global()
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17
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18 -- Pick up configuration.
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19
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20 local secure = module:get_option_boolean("reg_servlet_secure", true)
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21 local set_realm_name = module:get_option_string("reg_servlet_realm", "Restricted")
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22 local base_path = module:get_option_string("reg_servlet_base", "/register_account/")
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23 local throttle_time = module:get_option_number("reg_servlet_ttime", nil)
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24 local whitelist = module:get_option_set("reg_servlet_wl", {})
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25 local blacklist = module:get_option_set("reg_servlet_bl", {})
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26 local recent_ips = {}
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27
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28 -- Begin
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29
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30 local function http_response(event, code, message, headers)
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31 local response = event.response
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32
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33 if headers then
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34 for header, data in pairs(headers) do response.headers[header] = data end
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35 end
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36
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37 response.headers.content_type = "application/json"
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38 response.status_code = code
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39 response:send(message)
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40 end
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41
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42 local function handle_req(event)
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43 local request = event.request
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44 local body = request.body
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45
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46 if request.method ~= "POST" then
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47 return http_response(event, 405, "Bad method...", {["Allow"] = "POST"})
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48 end
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49 if not request.headers["authorization"] then
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50 return http_response(event, 401, "No... No...", {["WWW-Authenticate"]='Basic realm="'.. set_realm_name ..'"'})
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51 end
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52
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53 local user, password = b64_decode(request.headers.authorization:match("[^ ]*$") or ""):match("([^:]*):(.*)")
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54 user = jid_prep(user)
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55 if not user or not password then return http_response(event, 400, "What's this..?") end
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56 local user_node, user_host = jid_split(user)
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57 if not hosts[user_host] then return http_response(event, 401, "Negative.") end
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58
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59 module:log("warn", "%s is authing to submit a new user registration data", user)
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60 if not usermanager.test_password(user_node, user_host, password) then
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61 module:log("warn", "%s failed authentication", user)
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62 return http_response(event, 401, "Who the hell are you?! Guards!")
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63 end
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64
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65 local req_body
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66 -- We check that what we have is valid JSON wise else we throw an error...
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67 if not pcall(function() req_body = json_decode(body) end) then
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68 module:log("debug", "JSON data submitted for user registration by %s failed to Decode.", user)
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69 return http_response(event, 400, "JSON Decoding failed.")
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70 else
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71 -- Decode JSON data and check that all bits are there else throw an error
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72 req_body = json_decode(body)
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73 if req_body["username"] == nil or req_body["password"] == nil or req_body["host"] == nil or req_body["ip"] == nil then
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74 module:log("debug", "%s supplied an insufficent number of elements or wrong elements for the JSON registration", user)
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75 return http_response(event, 400, "Invalid syntax.")
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76 end
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77 -- Check if user is an admin of said host
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78 if not usermanager.is_admin(user, req_body["host"]) then
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79 module:log("warn", "%s tried to submit registration data for %s but he's not an admin", user, req_body["host"])
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80 return http_response(event, 401, "I obey only to my masters... Have a nice day.")
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81 else
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82 -- Checks for both Throttling/Whitelist and Blacklist (basically copycatted from prosody's register.lua code)
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83 if blacklist:contains(req_body["ip"]) then module:log("warn", "Attempt of reg. submission to the JSON servlet from blacklisted address: %s", req_body["ip"]) ; return http_response(403, "The specified address is blacklisted, sorry sorry.") end
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84 if throttle_time and not whitelist:contains(req_body["ip"]) then
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85 if not recent_ips[req_body["ip"]] then
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86 recent_ips[req_body["ip"]] = os_time()
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87 else
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88 if os_time() - recent_ips[req_body["ip"]] < throttle_time then
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89 recent_ips[req_body["ip"]] = os_time()
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90 module:log("warn", "JSON Registration request from %s has been throttled.", req_body["ip"])
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91 return http_response(503, "Woah... How many users you want to register..? Request throttled, wait a bit and try again.")
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92 end
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93 recent_ips[req_body["ip"]] = os_time()
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94 end
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95 end
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96
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97 -- We first check if the supplied username for registration is already there.
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98 -- And nodeprep the username
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99 local username = nodeprep(req_body["username"])
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100 if not usermanager.user_exists(username, req_body["host"]) then
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101 if not username then
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102 module:log("debug", "%s supplied an username containing invalid characters: %s", user, username)
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103 return http_response(event, 406, "Supplied username contains invalid characters, see RFC 6122.")
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104 else
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105 local ok, error = usermanager.create_user(username, req_body["password"], req_body["host"])
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106 if ok then
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107 hosts[req_body["host"]].events.fire_event("user-registered", { username = username, host = req_body["host"], source = "mod_register_json", session = { ip = req_body["ip"] } })
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108 module:log("debug", "%s registration data submission for %s@%s is successful", user, username, req_body["host"])
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109 return http_response(event, 200, "Done.")
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110 else
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111 module:log("error", "user creation failed: "..error)
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112 return http_response(event, 500, "Encountered server error while creating the user: "..error)
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113 end
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114 end
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115 else
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116 module:log("debug", "%s registration data submission for %s failed (user already exists)", user, username)
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117 return http_response(event, 409, "User already exists.")
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118 end
355
a5da789b2e7d mod_register_json: First commit (needs tests).
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parents:
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119 end
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parents:
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120 end
a5da789b2e7d mod_register_json: First commit (needs tests).
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parents:
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121 end
a5da789b2e7d mod_register_json: First commit (needs tests).
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parents:
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122
359
5d22ebcb9ec5 mod_register_json: Changed log levels, added a few primitive throttling/whitelist/blacklist options
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parents: 358
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123 -- Set it up!
560
b62f5e38f865 mod_register_json: added auto-cleanup logic to the module so it can at least be unloaded and reloaded without fuss. (Experimental: works with server_select and trunk)
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parents: 553
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124
651
78a23a7dc613 mod_register_json: fixed typo, added https/http switch and default value to it.
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parents: 648
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125 module:provides((secure and "https" or "http"), {
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126 default_path = base_path,
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127 route = {
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128 ["GET /"] = handle_req,
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129 ["POST /"] = handle_req
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130 }
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parents: 607
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131 })