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Merge pull request #11334 from annando/guid-style

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Use a nicer GUID style format
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Hypolite Petovan 2022-03-18 07:30:34 -04:00 committed by GitHub
parent 5c3226d88e 0aa229489f
commit 61e023d448
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2 changed files with 7 additions and 9 deletions
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14
src/Model/Item.php
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@ -1773,7 +1773,10 @@ class Item
}
/**
* Creates an unique guid out of a given uri
* Creates an unique guid out of a given uri.
* This function is used for messages outside the fediverse (Connector posts, feeds, Mails, ...)
* Posts that are created on this system are using System::createUUID.
* Received ActivityPub posts are using Processor::getGUIDByURL.
*
* @param string $uri uri of an item entry
* @param string $host hostname for the GUID prefix
@ -1785,19 +1788,14 @@ class Item
// We have to avoid that different routines could accidentally create the same value
$parsed = parse_url($uri);
// We use a hash of the hostname as prefix for the guid
$guid_prefix = hash("crc32", $host);
// Remove the scheme to make sure that "https" and "http" doesn't make a difference
unset($parsed["scheme"]);
// Glue it together to be able to make a hash from it
$host_id = implode("/", $parsed);
// We could use any hash algorithm since it isn't a security issue
$host_hash = hash("ripemd128", $host_id);
return $guid_prefix.$host_hash;
// Use a mixture of several hashes to provide some GUID like experience
return hash("crc32", $host) . '-'. hash('joaat', $host_id) . '-'. hash('fnv164', $host_id);
}
/**

2
src/Protocol/ActivityPub/Processor.php
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@ -553,7 +553,7 @@ class Processor
}
/**
* Generate a GUID out of an URL
* Generate a GUID out of an URL of an ActivityPub post.
*
* @param string $url message URL
* @return string with GUID