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annotate mod_storage_xmlarchive/datamanager_append_raw.lib.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 f4ab0966ba89
children
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aa984980a4dc mod_storage_xmlarchive: Include the missing append_raw() for 0.9 compatibility
Kim Alvefur <zash@zash.se>
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1 local io_open = io.open;
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2 local dm = require "core.storagemanager".olddm;
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3
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4 -- Append a blob of data to a file
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f4ab0966ba89 mod_storage_xmlarchive: Fix name in datamanager monkeypatch (fixes #774)
Kim Alvefur <zash@zash.se>
parents: 2289
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5 function dm.append_raw(username, host, datastore, ext, data)
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6 if type(data) ~= "string" then return; end
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7 local filename = dm.getpath(username, host, datastore, ext, true);
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8
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9 local ok;
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10 local f, msg = io_open(filename, "r+");
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11 if not f then
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12 -- File did probably not exist, let's create it
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13 f, msg = io_open(filename, "w");
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14 if not f then
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15 return nil, msg, "open";
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16 end
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17 end
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19 local pos = f:seek("end");
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20
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21 ok, msg = f:write(data);
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22 if not ok then
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23 f:close();
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24 return ok, msg, "write";
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25 end
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27 ok, msg = f:close();
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28 if not ok then
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29 return ok, msg;
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30 end
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32 return true, pos;
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33 end
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