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Code Issues Releases Wiki Activity

ircd:Ⓜ️:keys: Fix fetch loop robustness to non-rfc3986 compliant host entries.

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This commit is contained in:
Jason Volk 2023-03-03 15:11:27 -08:00
parent 08ea4b0e72
commit 59072bd622
1 changed files with 46 additions and 19 deletions
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65
matrix/keys.cc
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@ -274,6 +274,7 @@ catch(const ctx::timeout &e)
namespace ircd::m
{
static bool add_query(std::vector<fed::key::server_key> &, const fed::key::server_key &);
extern conf::item<milliseconds> keys_get_timeout;
}
@ -293,27 +294,10 @@ ircd::m::keys::fetch(const pdus &pdus)
for(const auto &event : pdus)
for(const auto &[server_name, signatures] : json::get<"signatures"_>(event))
for(const auto &[key_id, signature] : json::object(signatures))
{
const server_key query
add_query(q, server_key
{
json::get<"origin"_>(event), key_id
};
// Check if we're already making a query.
if(std::binary_search(begin(q), end(q), query))
continue;
// Check if we already have the key.
if(cache::has(json::get<"origin"_>(event), key_id))
continue;
// If there's a cached error on the host we can skip here.
if(fed::errant(json::get<"origin"_>(event)))
continue;
q.emplace_back(query);
std::sort(begin(q), end(q));
}
});
const size_t fetched
{
@ -323,6 +307,49 @@ ircd::m::keys::fetch(const pdus &pdus)
return fetched;
}
bool
ircd::m::add_query(std::vector<fed::key::server_key> &q,
const fed::key::server_key &query)
try
{
const auto &[server, key_id]
{
query
};
// Check if we're already making a query.
if(std::binary_search(begin(q), end(q), query))
return false;
// Check if we already have the key.
if(keys::cache::has(server, key_id))
return false;
// If there's a cached error on the host we can skip here.
if(fed::errant(server))
return false;
q.emplace_back(query);
std::sort(begin(q), end(q));
return true;
}
catch(const ctx::interrupted &e)
{
throw;
}
catch(const std::exception &e)
{
log::derror
{
log, "Key '%s' from server '%s' :%s",
query.second,
query.first,
e.what(),
};
return false;
}
size_t
ircd::m::keys::fetch(const queries &queries)
{