prosody
f2258e9750cf
util/dependencies.lua

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util/dependencies.lua @ 9273:f2258e9750cf

mod_vcard_legacy: Include avatar data even if metadata can't be loaded Normally both nodes should have the same configuration and matching items, but we can't depend on it without having some code that enforces it, which does not exist at the time of this commit. Including the avatar itself should be prioritised. The image format can be derived from magic bytes.
author Kim Alvefur <zash@zash.se>
date Fri, 07 Sep 2018 01:08:27 +0200
parent 8235:7d9a2c200736
child 9494:b19f676203fd
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local function softreq(...) local ok, lib = pcall(require, ...); if ok then return lib; else return nil, lib; end end
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10
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11 -- Required to be able to find packages installed with luarocks
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12 if not softreq "luarocks.loader" then -- LuaRocks 2.x
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13 softreq "luarocks.require"; -- LuaRocks <1.x
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14 end
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15
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16 local function missingdep(name, sources, msg)
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17 print("");
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18 print("**************************");
408
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19 print("Prosody was unable to find "..tostring(name));
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20 print("This package can be obtained in the following ways:");
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21 print("");
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22 local longest_platform = 0;
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23 for platform in pairs(sources) do
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24 longest_platform = math.max(longest_platform, #platform);
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25 end
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26 for platform, source in pairs(sources) do
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27 print("", platform..":"..(" "):rep(4+longest_platform-#platform)..source);
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28 end
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29 print("");
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30 print(msg or (name.." is required for Prosody to run, so we will now exit."));
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31 print("More help can be found on our website, at https://prosody.im/doc/depends");
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32 print("**************************");
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33 print("");
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34 end
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35
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36 -- COMPAT w/pre-0.8 Debian: The Debian config file used to use
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37 -- util.ztact, which has been removed from Prosody in 0.8. This
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38 -- is to log an error for people who still use it, so they can
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39 -- update their configs.
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40 package.preload["util.ztact"] = function ()
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41 if not package.loaded["core.loggingmanager"] then
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42 error("util.ztact has been removed from Prosody and you need to fix your config "
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43 .."file. More information can be found at https://prosody.im/doc/packagers#ztact", 0);
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44 else
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45 error("module 'util.ztact' has been deprecated in Prosody 0.8.");
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46 end
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47 end;
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48
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49 local function check_dependencies()
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50 if _VERSION < "Lua 5.1" then
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51 print "***********************************"
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52 print("Unsupported Lua version: ".._VERSION);
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53 print("At least Lua 5.1 is required.");
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54 print "***********************************"
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55 return false;
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56 end
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57
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58 local fatal;
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59
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60 local lxp = softreq "lxp"
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61
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62 if not lxp then
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63 missingdep("luaexpat", {
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64 ["Debian/Ubuntu"] = "sudo apt-get install lua-expat";
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65 ["luarocks"] = "luarocks install luaexpat";
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66 ["Source"] = "http://matthewwild.co.uk/projects/luaexpat/";
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67 });
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68 fatal = true;
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69 end
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70
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71 local socket = softreq "socket"
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72
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73 if not socket then
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74 missingdep("luasocket", {
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75 ["Debian/Ubuntu"] = "sudo apt-get install lua-socket";
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76 ["luarocks"] = "luarocks install luasocket";
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77 ["Source"] = "http://www.tecgraf.puc-rio.br/~diego/professional/luasocket/";
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78 });
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79 fatal = true;
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80 end
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81
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82 local lfs, err = softreq "lfs"
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83 if not lfs then
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84 missingdep("luafilesystem", {
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85 ["luarocks"] = "luarocks install luafilesystem";
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86 ["Debian/Ubuntu"] = "sudo apt-get install lua-filesystem";
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87 ["Source"] = "http://www.keplerproject.org/luafilesystem/";
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88 });
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89 fatal = true;
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90 end
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91
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92 local ssl = softreq "ssl"
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93
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94 if not ssl then
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95 missingdep("LuaSec", {
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96 ["Debian/Ubuntu"] = "sudo apt-get install lua-sec";
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97 ["luarocks"] = "luarocks install luasec";
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98 ["Source"] = "https://github.com/brunoos/luasec";
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99 }, "SSL/TLS support will not be available");
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4b61529d0884 Refuse to run without SSL/TLS unless run_without_ssl is set in config
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100 end
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101
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102 local bit = _G.bit32 or softreq"bit";
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103
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104 if not bit then
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105 missingdep("lua-bitops", {
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106 ["Debian/Ubuntu"] = "sudo apt-get install lua-bitop";
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107 ["luarocks"] = "luarocks install luabitop";
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108 ["Source"] = "http://bitop.luajit.org/";
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109 }, "WebSocket support will not be available");
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110 end
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111
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parents: 2299
diff changeset
112 local encodings, err = softreq "util.encodings"
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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113 if not encodings then
7264
6d97895c2bd7 util.dependencies: Show the full error when a symbol is not found (i.e., when running Prosody with the wrong version of Lua).
Thijs Alkemade <me@thijsalkema.de>
parents: 7007
diff changeset
114 if err:match("module '[^']*' not found") then
7875
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
115 missingdep("util.encodings", {
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
116 ["Windows"] = "Make sure you have encodings.dll from the Prosody distribution in util/";
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
117 ["GNU/Linux"] = "Run './configure' and 'make' in the Prosody source directory to build util/encodings.so";
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
118 });
2510
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
119 else
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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120 print "***********************************"
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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121 print("util/encodings couldn't be loaded. Check that you have a recent version of libidn");
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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122 print ""
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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123 print("The full error was:");
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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124 print(err)
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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125 print "***********************************"
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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126 end
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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127 fatal = true;
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Matthew Wild <mwild1@gmail.com>
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128 end
408
eb1a0960cefb Friendlier messages on missing dependencies
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
129
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130 local hashes, err = softreq "util.hashes"
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
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131 if not hashes then
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Thijs Alkemade <me@thijsalkema.de>
parents: 7007
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132 if err:match("module '[^']*' not found") then
7875
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Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
133 missingdep("util.hashes", {
3fbfd7210d78 util.dependencies: Normalize whitespace
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parents: 7813
diff changeset
134 ["Windows"] = "Make sure you have hashes.dll from the Prosody distribution in util/";
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
135 ["GNU/Linux"] = "Run './configure' and 'make' in the Prosody source directory to build util/hashes.so";
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
136 });
3fbfd7210d78 util.dependencies: Normalize whitespace
Kim Alvefur <zash@zash.se>
parents: 7813
diff changeset
137 else
2510
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Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
138 print "***********************************"
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
139 print("util/hashes couldn't be loaded. Check that you have a recent version of OpenSSL (libcrypto in particular)");
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
140 print ""
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
141 print("The full error was:");
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
142 print(err)
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
143 print "***********************************"
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
144 end
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
145 fatal = true;
97b5ea975cb9 util.dependencies, prosody, prosodyctl: Give util.dependencies a check_dependencies() function so the caller can decide what to do when dependencies aren't met - update prosody/prosodyctl for this change
Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
146 end
7767
36bf9ed87ae1 util.dependencies: Add check and info about lua-bitops (for mod_websockets)
Kim Alvefur <zash@zash.se>
parents: 7766
diff changeset
147
2510
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Matthew Wild <mwild1@gmail.com>
parents: 2299
diff changeset
148 return not fatal;
408
eb1a0960cefb Friendlier messages on missing dependencies
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
149 end
eb1a0960cefb Friendlier messages on missing dependencies
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
150
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parents: 6067
diff changeset
151 local function log_warnings()
7721
92f771147de8 util.dependencies: Disable warning about Lua 5.2 (but still warn about 5.3)
Kim Alvefur <zash@zash.se>
parents: 7679
diff changeset
152 if _VERSION > "Lua 5.2" then
7007
e28fbe6dd424 util.dependencies: Use prosody.log() instead of global log()
Matthew Wild <mwild1@gmail.com>
parents: 6778
diff changeset
153 prosody.log("warn", "Support for %s is experimental, please report any issues", _VERSION);
6778
4009ae66e0f0 util.dependencies: Only abort on Lua versions before 5.1, log a warning about 5.2 and above for now
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
154 end
6777
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diff changeset
155 local ssl = softreq"ssl";
3904
f93163081b3c prosody, prosodyctl, util.dependencies: Split checking and logging of dependencies so we can check hard deps before the config and logging is loaded
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
156 if ssl then
f93163081b3c prosody, prosodyctl, util.dependencies: Split checking and logging of dependencies so we can check hard deps before the config and logging is loaded
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
157 local major, minor, veryminor, patched = ssl._VERSION:match("(%d+)%.(%d+)%.?(%d*)(M?)");
f93163081b3c prosody, prosodyctl, util.dependencies: Split checking and logging of dependencies so we can check hard deps before the config and logging is loaded
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
158 if not major or ((tonumber(major) == 0 and (tonumber(minor) or 0) <= 3 and (tonumber(veryminor) or 0) <= 2) and patched ~= "M") then
7359
a5a080c12c96 Update every link to the documentation to use HTTPS
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 7264
diff changeset
159 prosody.log("error", "This version of LuaSec contains a known bug that causes disconnects, see https://prosody.im/doc/depends");
3904
f93163081b3c prosody, prosodyctl, util.dependencies: Split checking and logging of dependencies so we can check hard deps before the config and logging is loaded
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
160 end
f93163081b3c prosody, prosodyctl, util.dependencies: Split checking and logging of dependencies so we can check hard deps before the config and logging is loaded
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
161 end
6777
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Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
162 local lxp = softreq"lxp";
4426
ee65aa40ef60 util.dependencies, util.xmppstream: Move LuaExpat version checking to util.dependencies.
Waqas Hussain <waqas20@gmail.com>
parents: 4236
diff changeset
163 if lxp then
ee65aa40ef60 util.dependencies, util.xmppstream: Move LuaExpat version checking to util.dependencies.
Waqas Hussain <waqas20@gmail.com>
parents: 4236
diff changeset
164 if not pcall(lxp.new, { StartDoctypeDecl = false }) then
7007
e28fbe6dd424 util.dependencies: Use prosody.log() instead of global log()
Matthew Wild <mwild1@gmail.com>
parents: 6778
diff changeset
165 prosody.log("error", "The version of LuaExpat on your system leaves Prosody "
4426
ee65aa40ef60 util.dependencies, util.xmppstream: Move LuaExpat version checking to util.dependencies.
Waqas Hussain <waqas20@gmail.com>
parents: 4236
diff changeset
166 .."vulnerable to denial-of-service attacks. You should upgrade to "
6043
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
167 .."LuaExpat 1.3.0 or higher as soon as possible. See "
7359
a5a080c12c96 Update every link to the documentation to use HTTPS
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 7264
diff changeset
168 .."https://prosody.im/doc/depends#luaexpat for more information.");
6043
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
169 end
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
170 if not lxp.new({}).getcurrentbytecount then
7007
e28fbe6dd424 util.dependencies: Use prosody.log() instead of global log()
Matthew Wild <mwild1@gmail.com>
parents: 6778
diff changeset
171 prosody.log("error", "The version of LuaExpat on your system does not support "
6043
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
172 .."stanza size limits, which may leave servers on untrusted "
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
173 .."networks (e.g. the internet) vulnerable to denial-of-service "
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
174 .."attacks. You should upgrade to LuaExpat 1.3.0 or higher as "
29d2dd705148 util.dependencies: Log error when LuaExpat is not capable of enforcing stanza size limits
Matthew Wild <mwild1@gmail.com>
parents: 4426
diff changeset
175 .."soon as possible. See "
7359
a5a080c12c96 Update every link to the documentation to use HTTPS
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 7264
diff changeset
176 .."https://prosody.im/doc/depends#luaexpat for more information.");
4426
ee65aa40ef60 util.dependencies, util.xmppstream: Move LuaExpat version checking to util.dependencies.
Waqas Hussain <waqas20@gmail.com>
parents: 4236
diff changeset
177 end
ee65aa40ef60 util.dependencies, util.xmppstream: Move LuaExpat version checking to util.dependencies.
Waqas Hussain <waqas20@gmail.com>
parents: 4236
diff changeset
178 end
3904
f93163081b3c prosody, prosodyctl, util.dependencies: Split checking and logging of dependencies so we can check hard deps before the config and logging is loaded
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
179 end
742
b9f59372eb4e util.dependencies: Show useful messages when our own libraries are not found, too
Matthew Wild <mwild1@gmail.com>
parents: 615
diff changeset
180
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
181 return {
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
182 softreq = softreq;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
183 missingdep = missingdep;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
184 check_dependencies = check_dependencies;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
185 log_warnings = log_warnings;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6067
diff changeset
186 };