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Support UNLs with future effective dates:

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* Creates a version 2 of the UNL file format allowing publishers to
  pre-publish the next UNL while the current one is still valid.
* Version 1 of the UNL file format is still valid and backward
  compatible.
* Also causes rippled to lock down if it has no valid UNLs, similar to
  being amendment blocked, except reversible.
* Resolves #3548
* Resolves #3470
This commit is contained in:
Edward Hennis
2020-09-09 18:51:08 -04:00
parent 54da532ace
commit 4b9d3ca7de
31 changed files with 3980 additions and 932 deletions
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52
src/ripple/overlay/impl/OverlayImpl.cpp
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@@ -1026,13 +1026,7 @@ OverlayImpl::processValidatorList(
if (!req.target().starts_with(prefix.data()) || !setup_.vlEnabled)
return false;
auto key = req.target().substr(prefix.size());
if (key.empty())
return false;
// find the list
auto vl = app_.validators().getAvailable(key);
std::uint32_t version = 1;
boost::beast::http::response<json_body> msg;
msg.version(req.version());
@@ -1040,24 +1034,52 @@ OverlayImpl::processValidatorList(
msg.insert("Content-Type", "application/json");
msg.insert("Connection", "close");
if (!vl)
{
// 404 not found
msg.result(boost::beast::http::status::not_found);
auto fail = [&msg, &handoff](auto status) {
msg.result(status);
msg.insert("Content-Length", "0");
msg.body() = Json::nullValue;
msg.prepare_payload();
handoff.response = std::make_shared<SimpleWriter>(msg);
return true;
};
auto key = req.target().substr(prefix.size());
if (auto slash = key.find('/'); slash != boost::string_view::npos)
{
auto verString = key.substr(0, slash);
if (!boost::conversion::try_lexical_convert(verString, version))
return fail(boost::beast::http::status::bad_request);
key = key.substr(slash + 1);
}
if (key.empty())
return fail(boost::beast::http::status::bad_request);
// find the list
auto vl = app_.validators().getAvailable(key, version);
if (!vl)
{
// 404 not found
return fail(boost::beast::http::status::not_found);
}
else if (!*vl)
{
return fail(boost::beast::http::status::bad_request);
}
else
{
msg.result(boost::beast::http::status::ok);
msg.body() = *vl;
}
msg.prepare_payload();
handoff.response = std::make_shared<SimpleWriter>(msg);
return true;
msg.prepare_payload();
handoff.response = std::make_shared<SimpleWriter>(msg);
return true;
}
}
bool