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Merge #21035: Remove pointer cast in CRPCTable::dumpArgMap

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9048c58e10 Remove pointer cast in CRPCTable::dumpArgMap (Russell Yanofsky)
14f3d9b908 refactor: Add RPC server ExecuteCommands function (Russell Yanofsky)
6158a6d397 refactor: Replace JSONRPCRequest fHelp field with mode field (Russell Yanofsky)

Pull request description:

  This change is needed to fix the `rpc_help.py` test failing in #10102: https://cirrus-ci.com/task/5469433013469184?command=ci#L2275

  The [`CRPCTable::dumpArgMap`](16b784d953/src/rpc/server.cpp (L492)) method currently works by casting RPC `unique_id` integer field to a function pointer, and then calling it. The `unique_id` field wasn't supposed to be used this way (it's meant to be used to detect RPC aliases) and as a result, this code segfaults in the `rpc_help.py` test in multiprocess PR #10102 because wallet RPC functions aren't directly accessible from the node process.

  Fix this by adding a new `GET_ARGS` RPC request mode to retrieve argument information similar to the way the `GET_HELP` mode retrieves help information.

  ---

  This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10).

ACKs for top commit:
  MarcoFalke:
    re-ACK 9048c58e10 👑

Tree-SHA512: cd1a01c1daa5bde2c2455b63548371ee4cf39688313969ad2016d9a0fd4344102e3fd43034058f253364518e9632d57cf21abffad0d6a2c0c94b7a6921cbe615
This commit is contained in:
MarcoFalke
2021-03-15 10:13:10 +01:00
parent 6bc51af5c2 9048c58e10
commit 1e57d14d96
7 changed files with 49 additions and 34 deletions
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20
src/rpc/util.h
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@@ -333,26 +333,12 @@ public:
using RPCMethodImpl = std::function<UniValue(const RPCHelpMan&, const JSONRPCRequest&)>;
RPCHelpMan(std::string name, std::string description, std::vector<RPCArg> args, RPCResults results, RPCExamples examples, RPCMethodImpl fun);
UniValue HandleRequest(const JSONRPCRequest& request);
std::string ToString() const;
/** Append the named args that need to be converted from string to another JSON type */
void AppendArgMap(UniValue& arr) const;
UniValue HandleRequest(const JSONRPCRequest& request)
{
Check(request);
return m_fun(*this, request);
}
/** Return the named args that need to be converted from string to another JSON type */
UniValue GetArgMap() const;
/** If the supplied number of args is neither too small nor too high */
bool IsValidNumArgs(size_t num_args) const;
/**
* Check if the given request is valid according to this command or if
* the user is asking for help information, and throw help when appropriate.
*/
inline void Check(const JSONRPCRequest& request) const {
if (request.fHelp || !IsValidNumArgs(request.params.size())) {
throw std::runtime_error(ToString());
}
}
std::vector<std::string> GetArgNames() const;
const std::string m_name;