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25 lines
809 B
JavaScript
25 lines
809 B
JavaScript
5 years ago
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var HK = module.exports;
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/* getHash
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* this function slices off the leading portion of a message which is
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most likely unique
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* these "hashes" are used to identify particular messages in a channel's history
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* clients store "hashes" either in memory or in their drive to query for new messages:
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* when reconnecting to a pad
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* when connecting to chat or a mailbox
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* thus, we can't change this function without invalidating client data which:
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* is encrypted clientside
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* can't be easily migrated
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* don't break it!
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*/
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HK.getHash = function (msg, Log) {
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if (typeof(msg) !== 'string') {
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if (Log) {
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Log.warn('HK_GET_HASH', 'getHash() called on ' + typeof(msg) + ': ' + msg);
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}
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return '';
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}
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return msg.slice(0,64);
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};
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