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annotate mod_log_http/mod_log_http.lua @ 4651:8231774f5bfd

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mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 456b9f608fcf
children 3bd725430f40
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1 Addmodule:set_global();
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2
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3 local http = require "net.http";
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4 local codes = require "net.http.codes";
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5 local json = require "util.json";
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6
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7 local log = assert(io.open(assert(module:get_option_string("log_http_file"), "Please supply log_http_file in the config"), "a+"));
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8 log:setvbuf("line");
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9
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10 local function append_request(id, req)
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11 local headers = {};
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12 for k, v in pairs(req.headers) do
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13 table.insert(headers, { name = k, value = v });
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14 end
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15 local queryString = {};
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16 if req.query then
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17 for _, pair in ipairs(http.formdecode(req.query)) do
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18 table.insert(queryString, pair);
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19 end
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20 end
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21 log:write("<<<", json.encode({
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22 id = id;
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23 type = "request";
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24 method = req.method;
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25 url = req.url;
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26 httpVersion = "HTTP/1.1";
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27 cookies = {};
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28 headers = headers;
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29 queryString = queryString;
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30 postData = req.body and {
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31 mimeType = req.headers["Content-Type"];
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32 text = req.body;
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33 } or nil;
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34 headersSize = -1;
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35 bodySize = -1;
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36 }), "\n");
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37 end
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38
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39 local function append_response(id, resp)
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40 local headers = {};
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41 for k, v in pairs(resp.headers) do
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42 table.insert(headers, { name = k, value = v });
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43 end
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44 log:write(">>>", json.encode({
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45 id = id;
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46 type = "response";
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47 status = resp.code;
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48 statusText = codes[resp.code];
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49 httpVersion = resp.httpversion;
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50 cookies = {};
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51 headers = headers;
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52 content = resp.body and {
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53 size = #resp.body;
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54 mimeType = resp.headers.content_type;
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55 text = resp.body;
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56 } or nil;
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57 headersSize = -1;
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58 bodySize = -1;
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59 }), "\n");
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60 end
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61
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62 module:hook_object_event(http.events, "request", function (event)
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63 module:log("warn", "Request to %s!", event.url);
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64 append_request(event.request.id, event.request);
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65 end);
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66
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67 module:hook_object_event(http.events, "request-connection-error", function (event)
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68 module:log("warn", "Failed to make request to %s!", event.url);
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69 end);
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70
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71 module:hook_object_event(http.events, "response", function (event)
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72 module:log("warn", "Received response %d from %s!", event.code, event.url);
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73 append_response(event.request.id, event.response);
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74 end);
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75
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76 function module.unload()
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77 log:close();
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78 end