prosody
6b84d11aa09b
util/roles.lua

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util/roles.lua @ 13633:6b84d11aa09b

mod_storage_sql: Detect SQLite3 without UPSERT (or SQLCipher 3.x) SQLCipher v3.4.1 (the version in Debian 12) is based on SQLite3 v3.15.2, while UPSERT support was introduced in SQLite3 v3.24.0 This check was not needed before because we v3.24.0 has not been in a version of Debian we support for a long, long time. Note however that SQLCipher databases are not compatible across major versions, upgrading from v3.x to v4.x requires executing a migration. Attempts at making `prosodyctl mod_storage_sql upgrade` perform such a migration has not been successful. Executing the following in the `sqlcipher` tool should do the migration: PRAGMA key = '<key material>'; PRAGMA cipher_migrate;
author Kim Alvefur <zash@zash.se>
date Thu, 23 Jan 2025 19:33:05 +0100
parent 12987:2cf8d98d8a28
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1 local array = require "prosody.util.array";
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2 local it = require "prosody.util.iterators";
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3 local new_short_id = require "prosody.util.id".short;
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4
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5 local role_methods = {};
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6 local role_mt = {
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7 __index = role_methods;
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8 __name = "role";
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9 __add = nil;
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10 };
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11
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12 local function is_role(o)
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13 local mt = getmetatable(o);
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14 return mt == role_mt;
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15 end
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16
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17 local function _new_may(permissions, inherited_mays)
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18 local n_inherited = inherited_mays and #inherited_mays;
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19 return function (role, action, context)
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20 -- Note: 'role' may be a descendent role, not only the one we're attached to
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21 local policy = permissions[action];
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22 if policy ~= nil then
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23 return policy;
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24 end
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25 if n_inherited then
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26 for i = 1, n_inherited do
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27 policy = inherited_mays[i](role, action, context);
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28 if policy ~= nil then
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29 return policy;
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30 end
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31 end
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32 end
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33 return nil;
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34 end
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35 end
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36
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37 local permissions_key = {};
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38
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39 -- {
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40 -- Required:
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41 -- name = "My fancy role";
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42 --
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43 -- Optional:
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44 -- inherits = { role_obj... }
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45 -- default = true
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46 -- priority = 100
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47 -- permissions = {
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48 -- ["foo"] = true; -- allow
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49 -- ["bar"] = false; -- deny
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50 -- }
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51 -- }
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52 local function new(base_config, overrides)
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53 local config = setmetatable(overrides or {}, { __index = base_config });
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54 local permissions = {};
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55 local inherited_mays;
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56 if config.inherits then
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57 inherited_mays = array.pluck(config.inherits, "may");
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58 end
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59 local new_role = {
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60 id = new_short_id();
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61 name = config.name;
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62 description = config.description;
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63 default = config.default;
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64 priority = config.priority;
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65 may = _new_may(permissions, inherited_mays);
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66 inherits = config.inherits;
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67 [permissions_key] = permissions;
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68 };
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69 local desired_permissions = config.permissions or config[permissions_key];
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70 for k, v in pairs(desired_permissions or {}) do
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71 permissions[k] = v;
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72 end
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73 return setmetatable(new_role, role_mt);
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74 end
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75
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76 function role_mt:__freeze()
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77 local t = {
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78 id = self.id;
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79 name = self.name;
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80 description = self.description;
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81 default = self.default;
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82 priority = self.priority;
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83 inherits = self.inherits;
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84 permissions = self[permissions_key];
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85 };
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86 return t;
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87 end
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88
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89 function role_methods:clone(overrides)
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90 return new(self, overrides);
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91 end
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92
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93 function role_methods:set_permission(permission_name, policy, overwrite)
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94 local permissions = self[permissions_key];
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95 if overwrite ~= true and permissions[permission_name] ~= nil and permissions[permission_name] ~= policy then
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96 return false, "policy-already-exists";
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97 end
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98 permissions[permission_name] = policy;
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99 return true;
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100 end
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101
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102 function role_methods:policies()
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103 local policy_iterator, s, v = it.join(pairs(self[permissions_key]));
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104 if self.inherits then
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105 for _, inherited_role in ipairs(self.inherits) do
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106 policy_iterator:append(inherited_role:policies());
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107 end
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108 end
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109 return policy_iterator, s, v;
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110 end
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111
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112 function role_mt.__tostring(self)
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113 return ("role<[%s] %s>"):format(self.id or "nil", self.name or "[no name]");
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114 end
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115
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116 function role_mt.__pairs(self)
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117 return it.filter(permissions_key, next, self);
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118 end
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119
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120 return {
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121 is_role = is_role;
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122 new = new;
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123 };