prosody
0b01f40df0f9
util/paths.lua

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util/paths.lua @ 13854:0b01f40df0f9 13.0

mod_http_file_share: Add media-src 'self' to Content-Security-Policy header This allows certain media files to be loaded when navigated to directly in a web browser. Note that in some browsers (Chrome), the media gets transformed internally into a HTML page with some basic styles, but these are blocked due to our default-src policy of 'none' Although this could be unblocked with style-src unsafe-inline, it is not our plan to fix this, because this would have negative security implications. The reason for our CSP is to prevent the file share service from being used to host malicious HTML/CSS/JS. Yes, CSS can be malicious. Our file share service is for uploading and downloading files, it is not a substitute for website/content hosting.
author Matthew Wild <mwild1@gmail.com>
date Fri, 18 Apr 2025 12:25:06 +0100
parent 11183:2ac63715ef6f
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rev   line source
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2dc8dbd0940e util.paths: Add function for joining path segments
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1 local t_concat = table.concat;
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2
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3 local path_sep = package.config:sub(1,1);
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4
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5 local path_util = {}
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6
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7 -- Helper function to resolve relative paths (needed by config)
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8 function path_util.resolve_relative_path(parent_path, path)
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9 if path then
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10 -- Some normalization
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11 parent_path = parent_path:gsub("%"..path_sep.."+$", "");
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12 path = path:gsub("^%.%"..path_sep.."+", "");
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13
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14 local is_relative;
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15 if path_sep == "/" and path:sub(1,1) ~= "/" then
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16 is_relative = true;
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17 elseif path_sep == "\\" and (path:sub(1,1) ~= "/" and (path:sub(2,3) ~= ":\\" and path:sub(2,3) ~= ":/")) then
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18 is_relative = true;
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19 end
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20 if is_relative then
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21 return parent_path..path_sep..path;
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22 end
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23 end
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24 return path;
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25 end
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26
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27 -- Helper function to convert a glob to a Lua pattern
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28 function path_util.glob_to_pattern(glob)
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29 return "^"..glob:gsub("[%p*?]", function (c)
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30 if c == "*" then
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31 return ".*";
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32 elseif c == "?" then
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33 return ".";
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34 else
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35 return "%"..c;
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36 end
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37 end).."$";
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38 end
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39
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40 function path_util.join(a, b, c, ...) -- (... : string) --> string
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41 -- Optimization: Avoid creating table for most uses
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42 if b then
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43 if c then
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44 if ... then
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45 return t_concat({a,b,c,...}, path_sep);
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46 end
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47 return a..path_sep..b..path_sep..c;
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48 end
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49 return a..path_sep..b;
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50 end
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51 return a;
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52 end
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53
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54 function path_util.complement_lua_path(installer_plugin_path)
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55 -- Checking for duplicates
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56 -- The commands using luarocks need the path to the directory that has the /share and /lib folders.
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57 local lua_version = _VERSION:match(" (.+)$");
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58 local lua_path_sep = package.config:sub(3,3);
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59 local dir_sep = package.config:sub(1,1);
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60 local sub_path = dir_sep.."lua"..dir_sep..lua_version..dir_sep;
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61 if not string.find(package.path, installer_plugin_path, 1, true) then
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62 package.path = package.path..lua_path_sep..installer_plugin_path..dir_sep.."share"..sub_path.."?.lua";
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63 package.path = package.path..lua_path_sep..installer_plugin_path..dir_sep.."share"..sub_path.."?"..dir_sep.."init.lua";
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64 end
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65 if not string.find(package.path, installer_plugin_path, 1, true) then
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66 package.cpath = package.cpath..lua_path_sep..installer_plugin_path..dir_sep.."lib"..sub_path.."?.so";
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67 end
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68 end
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69
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70 return path_util;