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mod_storage_xmlarchive/mod_storage_xmlarchive.lua @ 2216:7f36ec9c836e
mod_pep_vcard_png_avatar: Initial commit
author | Michel Le Bihan <michel@lebihan.pl> |
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date | Fri, 24 Jun 2016 19:16:01 +0200 |
parent | 2183:13a8bbf256dd |
child | 2271:b34f4591366a |
rev | line source |
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1 -- mod_storage_xmlarchive |
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2 -- Copyright (C) 2015 Kim Alvefur |
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3 -- |
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4 -- This file is MIT/X11 licensed. |
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5 -- |
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6 -- luacheck: ignore unused self |
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7 |
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8 local dm = require "core.storagemanager".olddm; |
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9 local hmac_sha256 = require"util.hashes".hmac_sha256; |
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10 local st = require"util.stanza"; |
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11 local dt = require"util.datetime"; |
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12 local new_stream = require "util.xmppstream".new; |
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13 local empty = {}; |
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14 |
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15 local archive = {}; |
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16 local archive_mt = { __index = archive }; |
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17 |
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18 function archive:append(username, _, data, when, with) |
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19 if type(when) ~= "number" then |
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20 when, with, data = data, when, with; |
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21 end |
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22 if getmetatable(data) ~= st.stanza_mt then |
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23 module:log("error", "Attempt to store non-stanza object, traceback: %s", debug.traceback()); |
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24 return nil, "unsupported-datatype"; |
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25 end |
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26 |
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27 username = username or "@"; |
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28 data = tostring(data) .. "\n"; |
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29 |
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30 local day = dt.date(when); |
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31 local ok, err = dm.append_raw(username.."@"..day, module.host, self.store, "xml", data); |
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32 if not ok then |
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33 return nil, err; |
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34 end |
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35 |
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36 local offset = ok and err; |
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37 |
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38 local id = day .. "-" .. hmac_sha256(username.."@"..day.."+"..offset, data, true):sub(-16); |
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39 ok, err = dm.list_append(username.."@"..day, module.host, self.store, { id = id, when = dt.datetime(when), with = with, offset = offset, length = #data }); |
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40 if offset == 0 then |
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41 -- means the message is at the beginnig of the file, so it's a new day |
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42 -- so we add this new day to the "index" |
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43 ok, err = dm.list_append(username, module.host, self.store, day); |
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44 end |
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45 if not ok then |
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46 return nil, err; |
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47 end |
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48 return id; |
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49 end |
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50 |
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51 function archive:find(username, query) |
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52 username = username or "@"; |
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53 query = query or empty; |
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54 |
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55 local result; |
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56 local function cb(_, stanza) |
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57 if result then |
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58 module:log("warn", "Multiple items in chunk"); |
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59 end |
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60 result = stanza; |
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61 end |
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62 |
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63 local stream_sess = { notopen = true }; |
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64 local stream = new_stream(stream_sess, { handlestanza = cb, stream_ns = "jabber:client", default_ns = "jabber:client" }); |
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65 local dates = dm.list_load(username, module.host, self.store) or empty; |
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66 local function reset_stream() |
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67 stream:reset(); |
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68 stream_sess.notopen = true; |
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69 stream:feed(st.stanza("stream", { xmlns = "jabber:client" }):top_tag()); |
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70 stream_sess.notopen = nil; |
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71 end |
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72 reset_stream(); |
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73 |
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74 local limit = query.limit; |
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75 local start_day, step, last_day = 1, 1, #dates; |
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76 local count = 0; |
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77 local rev = query.reverse; |
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78 local in_range = not (query.after or query.before); |
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79 if query.after or query.start then |
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80 local d = query.after and query.after:sub(1, 10) or dt.date(query.start); |
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81 for i = 1, #dates do |
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82 if dates[i] == d then |
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83 start_day = i; break; |
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84 end |
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85 end |
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86 end |
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87 if query.before or query["end"] then |
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88 local d = query.before and query.before:sub(1, 10) or dt.date(query["end"]); |
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89 for i = #dates, 1, -1 do |
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90 if dates[i] == d then |
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91 last_day = i; break; |
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92 end |
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93 end |
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94 end |
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95 if rev then |
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96 start_day, step, last_day = last_day, -step, start_day; |
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97 end |
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98 local items, xmlfile; |
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99 local first_item, last_item; |
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100 |
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101 return function () |
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102 if limit and count >= limit then if xmlfile then xmlfile:close() end return; end |
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103 local filename; |
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104 |
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105 for d = start_day, last_day, step do |
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106 if d ~= start_day or not items then |
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107 module:log("debug", "Loading items from %s", dates[d]); |
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108 start_day = d; |
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109 items = dm.list_load(username .. "@" .. dates[d], module.host, self.store) or empty; |
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110 if not rev then |
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111 first_item, last_item = 1, #items; |
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112 else |
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113 first_item, last_item = #items, 1; |
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114 end |
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115 local ferr; |
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116 filename = dm.getpath(username .. "@" .. dates[d], module.host, self.store, "xml"); |
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117 xmlfile, ferr = io.open(filename); |
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118 if not xmlfile then |
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119 module:log("error", "Error: %s", ferr); |
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120 return; |
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121 end |
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122 end |
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123 |
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124 local q_with, q_start, q_end = query.with, query.start, query["end"]; |
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125 for i = first_item, last_item, step do |
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126 local item = items[i]; |
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127 local i_when, i_with = item.when, item.with; |
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128 if type(i_when) == "string" then |
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129 i_when = dt.parse(i_when); |
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130 end |
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131 if type(i_when) ~= "number" then |
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132 module:log("warn", "data[%q][%d].when is invalid", dates[d], i); |
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133 break; |
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134 end |
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135 if not item then |
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136 module:log("warn", "data[%q][%d] is nil", dates[d], i); |
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137 break; |
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138 end |
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139 if xmlfile and in_range |
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140 and (not q_with or i_with == q_with) |
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141 and (not q_start or i_when >= q_start) |
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142 and (not q_end or i_when <= q_end) then |
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143 count = count + 1; |
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144 first_item = i + step; |
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145 |
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146 xmlfile:seek("set", item.offset); |
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147 local data = xmlfile:read(item.length); |
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148 local ok, err = stream:feed(data); |
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149 if not ok then |
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150 module:log("warn", "Parse error in %s at %d+%d: %s", filename, item.offset, item.length, err); |
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151 reset_stream(); |
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152 end |
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153 if result then |
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154 local stanza = result; |
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155 result = nil; |
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156 return item.id, stanza, i_when, i_with; |
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157 end |
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158 end |
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159 if (rev and item.id == query.after) or |
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160 (not rev and item.id == query.before) then |
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161 in_range = false; |
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162 limit = count; |
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163 end |
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164 if (rev and item.id == query.before) or |
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165 (not rev and item.id == query.after) then |
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166 in_range = true; |
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167 end |
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168 end |
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169 end |
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170 if xmlfile then |
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171 xmlfile:close(); |
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172 xmlfile = nil; |
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173 end |
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174 end |
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175 end |
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176 |
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177 function archive:delete(username, query) |
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178 username = username or "@"; |
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179 query = query or empty; |
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180 if query.with or query.start or query.after then |
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181 return nil, "not-implemented"; -- Only trimming the oldest messages |
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182 end |
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183 local before = query.before or query["end"] or "9999-12-31"; |
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184 if type(before) == "number" then before = dt.date(before); else before = before:sub(1, 10); end |
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185 local dates, err = dm.list_load(username, module.host, self.store); |
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186 if not dates or next(dates) == nil then |
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187 if not err then return true end -- already empty |
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188 return dates, err; |
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189 end |
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190 if dates[1] > before then return true; end -- Nothing to delete |
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191 local remaining_dates = {}; |
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192 for d = 1, #dates do |
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193 if dates[d] >= before then |
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194 table.insert(remaining_dates, dates[d]); |
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195 end |
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196 end |
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197 table.sort(remaining_dates); |
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198 local ok, err = dm.list_store(username, module.host, self.store, remaining_dates); |
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199 if not ok then return ok, err; end |
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200 for d = 1, #dates do |
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201 if dates[d] < before then |
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202 os.remove(dm.getpath(username .. "@" .. dates[d], module.host, self.store, "list")); |
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203 os.remove(dm.getpath(username .. "@" .. dates[d], module.host, self.store, "xml")); |
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204 end |
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205 end |
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206 return true; |
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207 end |
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208 |
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209 function archive:dates(username) |
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210 return dm.list_load(username, module.host, self.store); |
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211 end |
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212 |
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213 local provider = {}; |
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214 function provider:open(store, typ) |
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215 if typ ~= "archive" then return nil, "unsupported-store"; end |
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216 return setmetatable({ store = store }, archive_mt); |
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217 end |
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218 |
1819
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219 function provider:purge(username) |
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220 for store in dm.stores(username, module.host) do |
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221 local dates = dm.list_load(username, module.host, store) or empty; |
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222 if dates[1] and type(dates[1]) == "string" and dates[1]:match("^%d%d%d%d%-%d%d-%d%d$") then |
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223 module:log("info", "Store %s looks like an archive store, emptying it...", store); |
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224 provider:open(store, "archive"):delete(username); |
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225 end |
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226 end |
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227 return true; |
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228 end |
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229 |
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230 module:provides("storage", provider); |