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multiprocess: add interfaces::ExternalSigner class

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Add interfaces::ExternalSigner to let signer objects be passed between
processes and signer code to run in the original process, without
multiple processes linking and running signer code.
This commit is contained in:
Russell Yanofsky 2021-06-16 14:49:09 -04:00
parent 113b863f07
commit a032fa30d2
5 changed files with 41 additions and 12 deletions
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21
src/node/interfaces.cpp
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@ -67,6 +67,17 @@ using interfaces::WalletClient;
namespace node {
namespace {
#ifdef ENABLE_EXTERNAL_SIGNER
class ExternalSignerImpl : public interfaces::ExternalSigner
{
public:
ExternalSignerImpl(::ExternalSigner signer) : m_signer(std::move(signer)) {}
std::string getName() override { return m_signer.m_name; }
private:
::ExternalSigner m_signer;
};
#endif
class NodeImpl : public Node
{
private:
@ -172,14 +183,18 @@ public:
}
return false;
}
std::vector<ExternalSigner> externalSigners() override
std::vector<std::unique_ptr<interfaces::ExternalSigner>> listExternalSigners() override
{
#ifdef ENABLE_EXTERNAL_SIGNER
std::vector<ExternalSigner> signers = {};
const std::string command = gArgs.GetArg("-signer", "");
if (command == "") return signers;
if (command == "") return {};
ExternalSigner::Enumerate(command, signers, Params().NetworkIDString());
return signers;
std::vector<std::unique_ptr<interfaces::ExternalSigner>> result;
for (auto& signer : signers) {
result.emplace_back(std::make_unique<ExternalSignerImpl>(std::move(signer)));
}
return result;
#else
// This result is indistinguishable from a successful call that returns
// no signers. For the current GUI this doesn't matter, because the wallet